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1 | /* | |
2 | * Copyright © 2006-2007 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | */ | |
26 | ||
27 | #include <linux/dmi.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/input.h> | |
30 | #include <linux/i2c.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/vgaarb.h> | |
34 | #include <drm/drm_edid.h> | |
35 | #include <drm/drmP.h> | |
36 | #include "intel_drv.h" | |
37 | #include <drm/i915_drm.h> | |
38 | #include "i915_drv.h" | |
39 | #include "intel_dsi.h" | |
40 | #include "i915_trace.h" | |
41 | #include <drm/drm_atomic.h> | |
42 | #include <drm/drm_atomic_helper.h> | |
43 | #include <drm/drm_dp_helper.h> | |
44 | #include <drm/drm_crtc_helper.h> | |
45 | #include <drm/drm_plane_helper.h> | |
46 | #include <drm/drm_rect.h> | |
47 | #include <linux/dma_remapping.h> | |
48 | #include <linux/reservation.h> | |
49 | #include <linux/dma-buf.h> | |
50 | ||
51 | static bool is_mmio_work(struct intel_flip_work *work) | |
52 | { | |
53 | return work->mmio_work.func; | |
54 | } | |
55 | ||
56 | /* Primary plane formats for gen <= 3 */ | |
57 | static const uint32_t i8xx_primary_formats[] = { | |
58 | DRM_FORMAT_C8, | |
59 | DRM_FORMAT_RGB565, | |
60 | DRM_FORMAT_XRGB1555, | |
61 | DRM_FORMAT_XRGB8888, | |
62 | }; | |
63 | ||
64 | /* Primary plane formats for gen >= 4 */ | |
65 | static const uint32_t i965_primary_formats[] = { | |
66 | DRM_FORMAT_C8, | |
67 | DRM_FORMAT_RGB565, | |
68 | DRM_FORMAT_XRGB8888, | |
69 | DRM_FORMAT_XBGR8888, | |
70 | DRM_FORMAT_XRGB2101010, | |
71 | DRM_FORMAT_XBGR2101010, | |
72 | }; | |
73 | ||
74 | static const uint32_t skl_primary_formats[] = { | |
75 | DRM_FORMAT_C8, | |
76 | DRM_FORMAT_RGB565, | |
77 | DRM_FORMAT_XRGB8888, | |
78 | DRM_FORMAT_XBGR8888, | |
79 | DRM_FORMAT_ARGB8888, | |
80 | DRM_FORMAT_ABGR8888, | |
81 | DRM_FORMAT_XRGB2101010, | |
82 | DRM_FORMAT_XBGR2101010, | |
83 | DRM_FORMAT_YUYV, | |
84 | DRM_FORMAT_YVYU, | |
85 | DRM_FORMAT_UYVY, | |
86 | DRM_FORMAT_VYUY, | |
87 | }; | |
88 | ||
89 | /* Cursor formats */ | |
90 | static const uint32_t intel_cursor_formats[] = { | |
91 | DRM_FORMAT_ARGB8888, | |
92 | }; | |
93 | ||
94 | static void i9xx_crtc_clock_get(struct intel_crtc *crtc, | |
95 | struct intel_crtc_state *pipe_config); | |
96 | static void ironlake_pch_clock_get(struct intel_crtc *crtc, | |
97 | struct intel_crtc_state *pipe_config); | |
98 | ||
99 | static int intel_framebuffer_init(struct drm_device *dev, | |
100 | struct intel_framebuffer *ifb, | |
101 | struct drm_mode_fb_cmd2 *mode_cmd, | |
102 | struct drm_i915_gem_object *obj); | |
103 | static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc); | |
104 | static void intel_set_pipe_timings(struct intel_crtc *intel_crtc); | |
105 | static void intel_set_pipe_src_size(struct intel_crtc *intel_crtc); | |
106 | static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc, | |
107 | struct intel_link_m_n *m_n, | |
108 | struct intel_link_m_n *m2_n2); | |
109 | static void ironlake_set_pipeconf(struct drm_crtc *crtc); | |
110 | static void haswell_set_pipeconf(struct drm_crtc *crtc); | |
111 | static void haswell_set_pipemisc(struct drm_crtc *crtc); | |
112 | static void vlv_prepare_pll(struct intel_crtc *crtc, | |
113 | const struct intel_crtc_state *pipe_config); | |
114 | static void chv_prepare_pll(struct intel_crtc *crtc, | |
115 | const struct intel_crtc_state *pipe_config); | |
116 | static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *); | |
117 | static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *); | |
118 | static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc, | |
119 | struct intel_crtc_state *crtc_state); | |
120 | static void skylake_pfit_enable(struct intel_crtc *crtc); | |
121 | static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force); | |
122 | static void ironlake_pfit_enable(struct intel_crtc *crtc); | |
123 | static void intel_modeset_setup_hw_state(struct drm_device *dev); | |
124 | static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc); | |
125 | static int ilk_max_pixel_rate(struct drm_atomic_state *state); | |
126 | static int bxt_calc_cdclk(int max_pixclk); | |
127 | ||
128 | struct intel_limit { | |
129 | struct { | |
130 | int min, max; | |
131 | } dot, vco, n, m, m1, m2, p, p1; | |
132 | ||
133 | struct { | |
134 | int dot_limit; | |
135 | int p2_slow, p2_fast; | |
136 | } p2; | |
137 | }; | |
138 | ||
139 | /* returns HPLL frequency in kHz */ | |
140 | static int valleyview_get_vco(struct drm_i915_private *dev_priv) | |
141 | { | |
142 | int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 }; | |
143 | ||
144 | /* Obtain SKU information */ | |
145 | mutex_lock(&dev_priv->sb_lock); | |
146 | hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) & | |
147 | CCK_FUSE_HPLL_FREQ_MASK; | |
148 | mutex_unlock(&dev_priv->sb_lock); | |
149 | ||
150 | return vco_freq[hpll_freq] * 1000; | |
151 | } | |
152 | ||
153 | int vlv_get_cck_clock(struct drm_i915_private *dev_priv, | |
154 | const char *name, u32 reg, int ref_freq) | |
155 | { | |
156 | u32 val; | |
157 | int divider; | |
158 | ||
159 | mutex_lock(&dev_priv->sb_lock); | |
160 | val = vlv_cck_read(dev_priv, reg); | |
161 | mutex_unlock(&dev_priv->sb_lock); | |
162 | ||
163 | divider = val & CCK_FREQUENCY_VALUES; | |
164 | ||
165 | WARN((val & CCK_FREQUENCY_STATUS) != | |
166 | (divider << CCK_FREQUENCY_STATUS_SHIFT), | |
167 | "%s change in progress\n", name); | |
168 | ||
169 | return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1); | |
170 | } | |
171 | ||
172 | static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv, | |
173 | const char *name, u32 reg) | |
174 | { | |
175 | if (dev_priv->hpll_freq == 0) | |
176 | dev_priv->hpll_freq = valleyview_get_vco(dev_priv); | |
177 | ||
178 | return vlv_get_cck_clock(dev_priv, name, reg, | |
179 | dev_priv->hpll_freq); | |
180 | } | |
181 | ||
182 | static int | |
183 | intel_pch_rawclk(struct drm_i915_private *dev_priv) | |
184 | { | |
185 | return (I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK) * 1000; | |
186 | } | |
187 | ||
188 | static int | |
189 | intel_vlv_hrawclk(struct drm_i915_private *dev_priv) | |
190 | { | |
191 | /* RAWCLK_FREQ_VLV register updated from power well code */ | |
192 | return vlv_get_cck_clock_hpll(dev_priv, "hrawclk", | |
193 | CCK_DISPLAY_REF_CLOCK_CONTROL); | |
194 | } | |
195 | ||
196 | static int | |
197 | intel_g4x_hrawclk(struct drm_i915_private *dev_priv) | |
198 | { | |
199 | uint32_t clkcfg; | |
200 | ||
201 | /* hrawclock is 1/4 the FSB frequency */ | |
202 | clkcfg = I915_READ(CLKCFG); | |
203 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
204 | case CLKCFG_FSB_400: | |
205 | return 100000; | |
206 | case CLKCFG_FSB_533: | |
207 | return 133333; | |
208 | case CLKCFG_FSB_667: | |
209 | return 166667; | |
210 | case CLKCFG_FSB_800: | |
211 | return 200000; | |
212 | case CLKCFG_FSB_1067: | |
213 | return 266667; | |
214 | case CLKCFG_FSB_1333: | |
215 | return 333333; | |
216 | /* these two are just a guess; one of them might be right */ | |
217 | case CLKCFG_FSB_1600: | |
218 | case CLKCFG_FSB_1600_ALT: | |
219 | return 400000; | |
220 | default: | |
221 | return 133333; | |
222 | } | |
223 | } | |
224 | ||
225 | void intel_update_rawclk(struct drm_i915_private *dev_priv) | |
226 | { | |
227 | if (HAS_PCH_SPLIT(dev_priv)) | |
228 | dev_priv->rawclk_freq = intel_pch_rawclk(dev_priv); | |
229 | else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
230 | dev_priv->rawclk_freq = intel_vlv_hrawclk(dev_priv); | |
231 | else if (IS_G4X(dev_priv) || IS_PINEVIEW(dev_priv)) | |
232 | dev_priv->rawclk_freq = intel_g4x_hrawclk(dev_priv); | |
233 | else | |
234 | return; /* no rawclk on other platforms, or no need to know it */ | |
235 | ||
236 | DRM_DEBUG_DRIVER("rawclk rate: %d kHz\n", dev_priv->rawclk_freq); | |
237 | } | |
238 | ||
239 | static void intel_update_czclk(struct drm_i915_private *dev_priv) | |
240 | { | |
241 | if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))) | |
242 | return; | |
243 | ||
244 | dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk", | |
245 | CCK_CZ_CLOCK_CONTROL); | |
246 | ||
247 | DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq); | |
248 | } | |
249 | ||
250 | static inline u32 /* units of 100MHz */ | |
251 | intel_fdi_link_freq(struct drm_i915_private *dev_priv, | |
252 | const struct intel_crtc_state *pipe_config) | |
253 | { | |
254 | if (HAS_DDI(dev_priv)) | |
255 | return pipe_config->port_clock; /* SPLL */ | |
256 | else if (IS_GEN5(dev_priv)) | |
257 | return ((I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2) * 10000; | |
258 | else | |
259 | return 270000; | |
260 | } | |
261 | ||
262 | static const struct intel_limit intel_limits_i8xx_dac = { | |
263 | .dot = { .min = 25000, .max = 350000 }, | |
264 | .vco = { .min = 908000, .max = 1512000 }, | |
265 | .n = { .min = 2, .max = 16 }, | |
266 | .m = { .min = 96, .max = 140 }, | |
267 | .m1 = { .min = 18, .max = 26 }, | |
268 | .m2 = { .min = 6, .max = 16 }, | |
269 | .p = { .min = 4, .max = 128 }, | |
270 | .p1 = { .min = 2, .max = 33 }, | |
271 | .p2 = { .dot_limit = 165000, | |
272 | .p2_slow = 4, .p2_fast = 2 }, | |
273 | }; | |
274 | ||
275 | static const struct intel_limit intel_limits_i8xx_dvo = { | |
276 | .dot = { .min = 25000, .max = 350000 }, | |
277 | .vco = { .min = 908000, .max = 1512000 }, | |
278 | .n = { .min = 2, .max = 16 }, | |
279 | .m = { .min = 96, .max = 140 }, | |
280 | .m1 = { .min = 18, .max = 26 }, | |
281 | .m2 = { .min = 6, .max = 16 }, | |
282 | .p = { .min = 4, .max = 128 }, | |
283 | .p1 = { .min = 2, .max = 33 }, | |
284 | .p2 = { .dot_limit = 165000, | |
285 | .p2_slow = 4, .p2_fast = 4 }, | |
286 | }; | |
287 | ||
288 | static const struct intel_limit intel_limits_i8xx_lvds = { | |
289 | .dot = { .min = 25000, .max = 350000 }, | |
290 | .vco = { .min = 908000, .max = 1512000 }, | |
291 | .n = { .min = 2, .max = 16 }, | |
292 | .m = { .min = 96, .max = 140 }, | |
293 | .m1 = { .min = 18, .max = 26 }, | |
294 | .m2 = { .min = 6, .max = 16 }, | |
295 | .p = { .min = 4, .max = 128 }, | |
296 | .p1 = { .min = 1, .max = 6 }, | |
297 | .p2 = { .dot_limit = 165000, | |
298 | .p2_slow = 14, .p2_fast = 7 }, | |
299 | }; | |
300 | ||
301 | static const struct intel_limit intel_limits_i9xx_sdvo = { | |
302 | .dot = { .min = 20000, .max = 400000 }, | |
303 | .vco = { .min = 1400000, .max = 2800000 }, | |
304 | .n = { .min = 1, .max = 6 }, | |
305 | .m = { .min = 70, .max = 120 }, | |
306 | .m1 = { .min = 8, .max = 18 }, | |
307 | .m2 = { .min = 3, .max = 7 }, | |
308 | .p = { .min = 5, .max = 80 }, | |
309 | .p1 = { .min = 1, .max = 8 }, | |
310 | .p2 = { .dot_limit = 200000, | |
311 | .p2_slow = 10, .p2_fast = 5 }, | |
312 | }; | |
313 | ||
314 | static const struct intel_limit intel_limits_i9xx_lvds = { | |
315 | .dot = { .min = 20000, .max = 400000 }, | |
316 | .vco = { .min = 1400000, .max = 2800000 }, | |
317 | .n = { .min = 1, .max = 6 }, | |
318 | .m = { .min = 70, .max = 120 }, | |
319 | .m1 = { .min = 8, .max = 18 }, | |
320 | .m2 = { .min = 3, .max = 7 }, | |
321 | .p = { .min = 7, .max = 98 }, | |
322 | .p1 = { .min = 1, .max = 8 }, | |
323 | .p2 = { .dot_limit = 112000, | |
324 | .p2_slow = 14, .p2_fast = 7 }, | |
325 | }; | |
326 | ||
327 | ||
328 | static const struct intel_limit intel_limits_g4x_sdvo = { | |
329 | .dot = { .min = 25000, .max = 270000 }, | |
330 | .vco = { .min = 1750000, .max = 3500000}, | |
331 | .n = { .min = 1, .max = 4 }, | |
332 | .m = { .min = 104, .max = 138 }, | |
333 | .m1 = { .min = 17, .max = 23 }, | |
334 | .m2 = { .min = 5, .max = 11 }, | |
335 | .p = { .min = 10, .max = 30 }, | |
336 | .p1 = { .min = 1, .max = 3}, | |
337 | .p2 = { .dot_limit = 270000, | |
338 | .p2_slow = 10, | |
339 | .p2_fast = 10 | |
340 | }, | |
341 | }; | |
342 | ||
343 | static const struct intel_limit intel_limits_g4x_hdmi = { | |
344 | .dot = { .min = 22000, .max = 400000 }, | |
345 | .vco = { .min = 1750000, .max = 3500000}, | |
346 | .n = { .min = 1, .max = 4 }, | |
347 | .m = { .min = 104, .max = 138 }, | |
348 | .m1 = { .min = 16, .max = 23 }, | |
349 | .m2 = { .min = 5, .max = 11 }, | |
350 | .p = { .min = 5, .max = 80 }, | |
351 | .p1 = { .min = 1, .max = 8}, | |
352 | .p2 = { .dot_limit = 165000, | |
353 | .p2_slow = 10, .p2_fast = 5 }, | |
354 | }; | |
355 | ||
356 | static const struct intel_limit intel_limits_g4x_single_channel_lvds = { | |
357 | .dot = { .min = 20000, .max = 115000 }, | |
358 | .vco = { .min = 1750000, .max = 3500000 }, | |
359 | .n = { .min = 1, .max = 3 }, | |
360 | .m = { .min = 104, .max = 138 }, | |
361 | .m1 = { .min = 17, .max = 23 }, | |
362 | .m2 = { .min = 5, .max = 11 }, | |
363 | .p = { .min = 28, .max = 112 }, | |
364 | .p1 = { .min = 2, .max = 8 }, | |
365 | .p2 = { .dot_limit = 0, | |
366 | .p2_slow = 14, .p2_fast = 14 | |
367 | }, | |
368 | }; | |
369 | ||
370 | static const struct intel_limit intel_limits_g4x_dual_channel_lvds = { | |
371 | .dot = { .min = 80000, .max = 224000 }, | |
372 | .vco = { .min = 1750000, .max = 3500000 }, | |
373 | .n = { .min = 1, .max = 3 }, | |
374 | .m = { .min = 104, .max = 138 }, | |
375 | .m1 = { .min = 17, .max = 23 }, | |
376 | .m2 = { .min = 5, .max = 11 }, | |
377 | .p = { .min = 14, .max = 42 }, | |
378 | .p1 = { .min = 2, .max = 6 }, | |
379 | .p2 = { .dot_limit = 0, | |
380 | .p2_slow = 7, .p2_fast = 7 | |
381 | }, | |
382 | }; | |
383 | ||
384 | static const struct intel_limit intel_limits_pineview_sdvo = { | |
385 | .dot = { .min = 20000, .max = 400000}, | |
386 | .vco = { .min = 1700000, .max = 3500000 }, | |
387 | /* Pineview's Ncounter is a ring counter */ | |
388 | .n = { .min = 3, .max = 6 }, | |
389 | .m = { .min = 2, .max = 256 }, | |
390 | /* Pineview only has one combined m divider, which we treat as m2. */ | |
391 | .m1 = { .min = 0, .max = 0 }, | |
392 | .m2 = { .min = 0, .max = 254 }, | |
393 | .p = { .min = 5, .max = 80 }, | |
394 | .p1 = { .min = 1, .max = 8 }, | |
395 | .p2 = { .dot_limit = 200000, | |
396 | .p2_slow = 10, .p2_fast = 5 }, | |
397 | }; | |
398 | ||
399 | static const struct intel_limit intel_limits_pineview_lvds = { | |
400 | .dot = { .min = 20000, .max = 400000 }, | |
401 | .vco = { .min = 1700000, .max = 3500000 }, | |
402 | .n = { .min = 3, .max = 6 }, | |
403 | .m = { .min = 2, .max = 256 }, | |
404 | .m1 = { .min = 0, .max = 0 }, | |
405 | .m2 = { .min = 0, .max = 254 }, | |
406 | .p = { .min = 7, .max = 112 }, | |
407 | .p1 = { .min = 1, .max = 8 }, | |
408 | .p2 = { .dot_limit = 112000, | |
409 | .p2_slow = 14, .p2_fast = 14 }, | |
410 | }; | |
411 | ||
412 | /* Ironlake / Sandybridge | |
413 | * | |
414 | * We calculate clock using (register_value + 2) for N/M1/M2, so here | |
415 | * the range value for them is (actual_value - 2). | |
416 | */ | |
417 | static const struct intel_limit intel_limits_ironlake_dac = { | |
418 | .dot = { .min = 25000, .max = 350000 }, | |
419 | .vco = { .min = 1760000, .max = 3510000 }, | |
420 | .n = { .min = 1, .max = 5 }, | |
421 | .m = { .min = 79, .max = 127 }, | |
422 | .m1 = { .min = 12, .max = 22 }, | |
423 | .m2 = { .min = 5, .max = 9 }, | |
424 | .p = { .min = 5, .max = 80 }, | |
425 | .p1 = { .min = 1, .max = 8 }, | |
426 | .p2 = { .dot_limit = 225000, | |
427 | .p2_slow = 10, .p2_fast = 5 }, | |
428 | }; | |
429 | ||
430 | static const struct intel_limit intel_limits_ironlake_single_lvds = { | |
431 | .dot = { .min = 25000, .max = 350000 }, | |
432 | .vco = { .min = 1760000, .max = 3510000 }, | |
433 | .n = { .min = 1, .max = 3 }, | |
434 | .m = { .min = 79, .max = 118 }, | |
435 | .m1 = { .min = 12, .max = 22 }, | |
436 | .m2 = { .min = 5, .max = 9 }, | |
437 | .p = { .min = 28, .max = 112 }, | |
438 | .p1 = { .min = 2, .max = 8 }, | |
439 | .p2 = { .dot_limit = 225000, | |
440 | .p2_slow = 14, .p2_fast = 14 }, | |
441 | }; | |
442 | ||
443 | static const struct intel_limit intel_limits_ironlake_dual_lvds = { | |
444 | .dot = { .min = 25000, .max = 350000 }, | |
445 | .vco = { .min = 1760000, .max = 3510000 }, | |
446 | .n = { .min = 1, .max = 3 }, | |
447 | .m = { .min = 79, .max = 127 }, | |
448 | .m1 = { .min = 12, .max = 22 }, | |
449 | .m2 = { .min = 5, .max = 9 }, | |
450 | .p = { .min = 14, .max = 56 }, | |
451 | .p1 = { .min = 2, .max = 8 }, | |
452 | .p2 = { .dot_limit = 225000, | |
453 | .p2_slow = 7, .p2_fast = 7 }, | |
454 | }; | |
455 | ||
456 | /* LVDS 100mhz refclk limits. */ | |
457 | static const struct intel_limit intel_limits_ironlake_single_lvds_100m = { | |
458 | .dot = { .min = 25000, .max = 350000 }, | |
459 | .vco = { .min = 1760000, .max = 3510000 }, | |
460 | .n = { .min = 1, .max = 2 }, | |
461 | .m = { .min = 79, .max = 126 }, | |
462 | .m1 = { .min = 12, .max = 22 }, | |
463 | .m2 = { .min = 5, .max = 9 }, | |
464 | .p = { .min = 28, .max = 112 }, | |
465 | .p1 = { .min = 2, .max = 8 }, | |
466 | .p2 = { .dot_limit = 225000, | |
467 | .p2_slow = 14, .p2_fast = 14 }, | |
468 | }; | |
469 | ||
470 | static const struct intel_limit intel_limits_ironlake_dual_lvds_100m = { | |
471 | .dot = { .min = 25000, .max = 350000 }, | |
472 | .vco = { .min = 1760000, .max = 3510000 }, | |
473 | .n = { .min = 1, .max = 3 }, | |
474 | .m = { .min = 79, .max = 126 }, | |
475 | .m1 = { .min = 12, .max = 22 }, | |
476 | .m2 = { .min = 5, .max = 9 }, | |
477 | .p = { .min = 14, .max = 42 }, | |
478 | .p1 = { .min = 2, .max = 6 }, | |
479 | .p2 = { .dot_limit = 225000, | |
480 | .p2_slow = 7, .p2_fast = 7 }, | |
481 | }; | |
482 | ||
483 | static const struct intel_limit intel_limits_vlv = { | |
484 | /* | |
485 | * These are the data rate limits (measured in fast clocks) | |
486 | * since those are the strictest limits we have. The fast | |
487 | * clock and actual rate limits are more relaxed, so checking | |
488 | * them would make no difference. | |
489 | */ | |
490 | .dot = { .min = 25000 * 5, .max = 270000 * 5 }, | |
491 | .vco = { .min = 4000000, .max = 6000000 }, | |
492 | .n = { .min = 1, .max = 7 }, | |
493 | .m1 = { .min = 2, .max = 3 }, | |
494 | .m2 = { .min = 11, .max = 156 }, | |
495 | .p1 = { .min = 2, .max = 3 }, | |
496 | .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */ | |
497 | }; | |
498 | ||
499 | static const struct intel_limit intel_limits_chv = { | |
500 | /* | |
501 | * These are the data rate limits (measured in fast clocks) | |
502 | * since those are the strictest limits we have. The fast | |
503 | * clock and actual rate limits are more relaxed, so checking | |
504 | * them would make no difference. | |
505 | */ | |
506 | .dot = { .min = 25000 * 5, .max = 540000 * 5}, | |
507 | .vco = { .min = 4800000, .max = 6480000 }, | |
508 | .n = { .min = 1, .max = 1 }, | |
509 | .m1 = { .min = 2, .max = 2 }, | |
510 | .m2 = { .min = 24 << 22, .max = 175 << 22 }, | |
511 | .p1 = { .min = 2, .max = 4 }, | |
512 | .p2 = { .p2_slow = 1, .p2_fast = 14 }, | |
513 | }; | |
514 | ||
515 | static const struct intel_limit intel_limits_bxt = { | |
516 | /* FIXME: find real dot limits */ | |
517 | .dot = { .min = 0, .max = INT_MAX }, | |
518 | .vco = { .min = 4800000, .max = 6700000 }, | |
519 | .n = { .min = 1, .max = 1 }, | |
520 | .m1 = { .min = 2, .max = 2 }, | |
521 | /* FIXME: find real m2 limits */ | |
522 | .m2 = { .min = 2 << 22, .max = 255 << 22 }, | |
523 | .p1 = { .min = 2, .max = 4 }, | |
524 | .p2 = { .p2_slow = 1, .p2_fast = 20 }, | |
525 | }; | |
526 | ||
527 | static bool | |
528 | needs_modeset(struct drm_crtc_state *state) | |
529 | { | |
530 | return drm_atomic_crtc_needs_modeset(state); | |
531 | } | |
532 | ||
533 | /** | |
534 | * Returns whether any output on the specified pipe is of the specified type | |
535 | */ | |
536 | bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type) | |
537 | { | |
538 | struct drm_device *dev = crtc->base.dev; | |
539 | struct intel_encoder *encoder; | |
540 | ||
541 | for_each_encoder_on_crtc(dev, &crtc->base, encoder) | |
542 | if (encoder->type == type) | |
543 | return true; | |
544 | ||
545 | return false; | |
546 | } | |
547 | ||
548 | /** | |
549 | * Returns whether any output on the specified pipe will have the specified | |
550 | * type after a staged modeset is complete, i.e., the same as | |
551 | * intel_pipe_has_type() but looking at encoder->new_crtc instead of | |
552 | * encoder->crtc. | |
553 | */ | |
554 | static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state, | |
555 | int type) | |
556 | { | |
557 | struct drm_atomic_state *state = crtc_state->base.state; | |
558 | struct drm_connector *connector; | |
559 | struct drm_connector_state *connector_state; | |
560 | struct intel_encoder *encoder; | |
561 | int i, num_connectors = 0; | |
562 | ||
563 | for_each_connector_in_state(state, connector, connector_state, i) { | |
564 | if (connector_state->crtc != crtc_state->base.crtc) | |
565 | continue; | |
566 | ||
567 | num_connectors++; | |
568 | ||
569 | encoder = to_intel_encoder(connector_state->best_encoder); | |
570 | if (encoder->type == type) | |
571 | return true; | |
572 | } | |
573 | ||
574 | WARN_ON(num_connectors == 0); | |
575 | ||
576 | return false; | |
577 | } | |
578 | ||
579 | /* | |
580 | * Platform specific helpers to calculate the port PLL loopback- (clock.m), | |
581 | * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast | |
582 | * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic. | |
583 | * The helpers' return value is the rate of the clock that is fed to the | |
584 | * display engine's pipe which can be the above fast dot clock rate or a | |
585 | * divided-down version of it. | |
586 | */ | |
587 | /* m1 is reserved as 0 in Pineview, n is a ring counter */ | |
588 | static int pnv_calc_dpll_params(int refclk, struct dpll *clock) | |
589 | { | |
590 | clock->m = clock->m2 + 2; | |
591 | clock->p = clock->p1 * clock->p2; | |
592 | if (WARN_ON(clock->n == 0 || clock->p == 0)) | |
593 | return 0; | |
594 | clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n); | |
595 | clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p); | |
596 | ||
597 | return clock->dot; | |
598 | } | |
599 | ||
600 | static uint32_t i9xx_dpll_compute_m(struct dpll *dpll) | |
601 | { | |
602 | return 5 * (dpll->m1 + 2) + (dpll->m2 + 2); | |
603 | } | |
604 | ||
605 | static int i9xx_calc_dpll_params(int refclk, struct dpll *clock) | |
606 | { | |
607 | clock->m = i9xx_dpll_compute_m(clock); | |
608 | clock->p = clock->p1 * clock->p2; | |
609 | if (WARN_ON(clock->n + 2 == 0 || clock->p == 0)) | |
610 | return 0; | |
611 | clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2); | |
612 | clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p); | |
613 | ||
614 | return clock->dot; | |
615 | } | |
616 | ||
617 | static int vlv_calc_dpll_params(int refclk, struct dpll *clock) | |
618 | { | |
619 | clock->m = clock->m1 * clock->m2; | |
620 | clock->p = clock->p1 * clock->p2; | |
621 | if (WARN_ON(clock->n == 0 || clock->p == 0)) | |
622 | return 0; | |
623 | clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n); | |
624 | clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p); | |
625 | ||
626 | return clock->dot / 5; | |
627 | } | |
628 | ||
629 | int chv_calc_dpll_params(int refclk, struct dpll *clock) | |
630 | { | |
631 | clock->m = clock->m1 * clock->m2; | |
632 | clock->p = clock->p1 * clock->p2; | |
633 | if (WARN_ON(clock->n == 0 || clock->p == 0)) | |
634 | return 0; | |
635 | clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m, | |
636 | clock->n << 22); | |
637 | clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p); | |
638 | ||
639 | return clock->dot / 5; | |
640 | } | |
641 | ||
642 | #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0) | |
643 | /** | |
644 | * Returns whether the given set of divisors are valid for a given refclk with | |
645 | * the given connectors. | |
646 | */ | |
647 | ||
648 | static bool intel_PLL_is_valid(struct drm_device *dev, | |
649 | const struct intel_limit *limit, | |
650 | const struct dpll *clock) | |
651 | { | |
652 | if (clock->n < limit->n.min || limit->n.max < clock->n) | |
653 | INTELPllInvalid("n out of range\n"); | |
654 | if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1) | |
655 | INTELPllInvalid("p1 out of range\n"); | |
656 | if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2) | |
657 | INTELPllInvalid("m2 out of range\n"); | |
658 | if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1) | |
659 | INTELPllInvalid("m1 out of range\n"); | |
660 | ||
661 | if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) && | |
662 | !IS_CHERRYVIEW(dev) && !IS_BROXTON(dev)) | |
663 | if (clock->m1 <= clock->m2) | |
664 | INTELPllInvalid("m1 <= m2\n"); | |
665 | ||
666 | if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && !IS_BROXTON(dev)) { | |
667 | if (clock->p < limit->p.min || limit->p.max < clock->p) | |
668 | INTELPllInvalid("p out of range\n"); | |
669 | if (clock->m < limit->m.min || limit->m.max < clock->m) | |
670 | INTELPllInvalid("m out of range\n"); | |
671 | } | |
672 | ||
673 | if (clock->vco < limit->vco.min || limit->vco.max < clock->vco) | |
674 | INTELPllInvalid("vco out of range\n"); | |
675 | /* XXX: We may need to be checking "Dot clock" depending on the multiplier, | |
676 | * connector, etc., rather than just a single range. | |
677 | */ | |
678 | if (clock->dot < limit->dot.min || limit->dot.max < clock->dot) | |
679 | INTELPllInvalid("dot out of range\n"); | |
680 | ||
681 | return true; | |
682 | } | |
683 | ||
684 | static int | |
685 | i9xx_select_p2_div(const struct intel_limit *limit, | |
686 | const struct intel_crtc_state *crtc_state, | |
687 | int target) | |
688 | { | |
689 | struct drm_device *dev = crtc_state->base.crtc->dev; | |
690 | ||
691 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
692 | /* | |
693 | * For LVDS just rely on its current settings for dual-channel. | |
694 | * We haven't figured out how to reliably set up different | |
695 | * single/dual channel state, if we even can. | |
696 | */ | |
697 | if (intel_is_dual_link_lvds(dev)) | |
698 | return limit->p2.p2_fast; | |
699 | else | |
700 | return limit->p2.p2_slow; | |
701 | } else { | |
702 | if (target < limit->p2.dot_limit) | |
703 | return limit->p2.p2_slow; | |
704 | else | |
705 | return limit->p2.p2_fast; | |
706 | } | |
707 | } | |
708 | ||
709 | /* | |
710 | * Returns a set of divisors for the desired target clock with the given | |
711 | * refclk, or FALSE. The returned values represent the clock equation: | |
712 | * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. | |
713 | * | |
714 | * Target and reference clocks are specified in kHz. | |
715 | * | |
716 | * If match_clock is provided, then best_clock P divider must match the P | |
717 | * divider from @match_clock used for LVDS downclocking. | |
718 | */ | |
719 | static bool | |
720 | i9xx_find_best_dpll(const struct intel_limit *limit, | |
721 | struct intel_crtc_state *crtc_state, | |
722 | int target, int refclk, struct dpll *match_clock, | |
723 | struct dpll *best_clock) | |
724 | { | |
725 | struct drm_device *dev = crtc_state->base.crtc->dev; | |
726 | struct dpll clock; | |
727 | int err = target; | |
728 | ||
729 | memset(best_clock, 0, sizeof(*best_clock)); | |
730 | ||
731 | clock.p2 = i9xx_select_p2_div(limit, crtc_state, target); | |
732 | ||
733 | for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; | |
734 | clock.m1++) { | |
735 | for (clock.m2 = limit->m2.min; | |
736 | clock.m2 <= limit->m2.max; clock.m2++) { | |
737 | if (clock.m2 >= clock.m1) | |
738 | break; | |
739 | for (clock.n = limit->n.min; | |
740 | clock.n <= limit->n.max; clock.n++) { | |
741 | for (clock.p1 = limit->p1.min; | |
742 | clock.p1 <= limit->p1.max; clock.p1++) { | |
743 | int this_err; | |
744 | ||
745 | i9xx_calc_dpll_params(refclk, &clock); | |
746 | if (!intel_PLL_is_valid(dev, limit, | |
747 | &clock)) | |
748 | continue; | |
749 | if (match_clock && | |
750 | clock.p != match_clock->p) | |
751 | continue; | |
752 | ||
753 | this_err = abs(clock.dot - target); | |
754 | if (this_err < err) { | |
755 | *best_clock = clock; | |
756 | err = this_err; | |
757 | } | |
758 | } | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | return (err != target); | |
764 | } | |
765 | ||
766 | /* | |
767 | * Returns a set of divisors for the desired target clock with the given | |
768 | * refclk, or FALSE. The returned values represent the clock equation: | |
769 | * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. | |
770 | * | |
771 | * Target and reference clocks are specified in kHz. | |
772 | * | |
773 | * If match_clock is provided, then best_clock P divider must match the P | |
774 | * divider from @match_clock used for LVDS downclocking. | |
775 | */ | |
776 | static bool | |
777 | pnv_find_best_dpll(const struct intel_limit *limit, | |
778 | struct intel_crtc_state *crtc_state, | |
779 | int target, int refclk, struct dpll *match_clock, | |
780 | struct dpll *best_clock) | |
781 | { | |
782 | struct drm_device *dev = crtc_state->base.crtc->dev; | |
783 | struct dpll clock; | |
784 | int err = target; | |
785 | ||
786 | memset(best_clock, 0, sizeof(*best_clock)); | |
787 | ||
788 | clock.p2 = i9xx_select_p2_div(limit, crtc_state, target); | |
789 | ||
790 | for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; | |
791 | clock.m1++) { | |
792 | for (clock.m2 = limit->m2.min; | |
793 | clock.m2 <= limit->m2.max; clock.m2++) { | |
794 | for (clock.n = limit->n.min; | |
795 | clock.n <= limit->n.max; clock.n++) { | |
796 | for (clock.p1 = limit->p1.min; | |
797 | clock.p1 <= limit->p1.max; clock.p1++) { | |
798 | int this_err; | |
799 | ||
800 | pnv_calc_dpll_params(refclk, &clock); | |
801 | if (!intel_PLL_is_valid(dev, limit, | |
802 | &clock)) | |
803 | continue; | |
804 | if (match_clock && | |
805 | clock.p != match_clock->p) | |
806 | continue; | |
807 | ||
808 | this_err = abs(clock.dot - target); | |
809 | if (this_err < err) { | |
810 | *best_clock = clock; | |
811 | err = this_err; | |
812 | } | |
813 | } | |
814 | } | |
815 | } | |
816 | } | |
817 | ||
818 | return (err != target); | |
819 | } | |
820 | ||
821 | /* | |
822 | * Returns a set of divisors for the desired target clock with the given | |
823 | * refclk, or FALSE. The returned values represent the clock equation: | |
824 | * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. | |
825 | * | |
826 | * Target and reference clocks are specified in kHz. | |
827 | * | |
828 | * If match_clock is provided, then best_clock P divider must match the P | |
829 | * divider from @match_clock used for LVDS downclocking. | |
830 | */ | |
831 | static bool | |
832 | g4x_find_best_dpll(const struct intel_limit *limit, | |
833 | struct intel_crtc_state *crtc_state, | |
834 | int target, int refclk, struct dpll *match_clock, | |
835 | struct dpll *best_clock) | |
836 | { | |
837 | struct drm_device *dev = crtc_state->base.crtc->dev; | |
838 | struct dpll clock; | |
839 | int max_n; | |
840 | bool found = false; | |
841 | /* approximately equals target * 0.00585 */ | |
842 | int err_most = (target >> 8) + (target >> 9); | |
843 | ||
844 | memset(best_clock, 0, sizeof(*best_clock)); | |
845 | ||
846 | clock.p2 = i9xx_select_p2_div(limit, crtc_state, target); | |
847 | ||
848 | max_n = limit->n.max; | |
849 | /* based on hardware requirement, prefer smaller n to precision */ | |
850 | for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) { | |
851 | /* based on hardware requirement, prefere larger m1,m2 */ | |
852 | for (clock.m1 = limit->m1.max; | |
853 | clock.m1 >= limit->m1.min; clock.m1--) { | |
854 | for (clock.m2 = limit->m2.max; | |
855 | clock.m2 >= limit->m2.min; clock.m2--) { | |
856 | for (clock.p1 = limit->p1.max; | |
857 | clock.p1 >= limit->p1.min; clock.p1--) { | |
858 | int this_err; | |
859 | ||
860 | i9xx_calc_dpll_params(refclk, &clock); | |
861 | if (!intel_PLL_is_valid(dev, limit, | |
862 | &clock)) | |
863 | continue; | |
864 | ||
865 | this_err = abs(clock.dot - target); | |
866 | if (this_err < err_most) { | |
867 | *best_clock = clock; | |
868 | err_most = this_err; | |
869 | max_n = clock.n; | |
870 | found = true; | |
871 | } | |
872 | } | |
873 | } | |
874 | } | |
875 | } | |
876 | return found; | |
877 | } | |
878 | ||
879 | /* | |
880 | * Check if the calculated PLL configuration is more optimal compared to the | |
881 | * best configuration and error found so far. Return the calculated error. | |
882 | */ | |
883 | static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq, | |
884 | const struct dpll *calculated_clock, | |
885 | const struct dpll *best_clock, | |
886 | unsigned int best_error_ppm, | |
887 | unsigned int *error_ppm) | |
888 | { | |
889 | /* | |
890 | * For CHV ignore the error and consider only the P value. | |
891 | * Prefer a bigger P value based on HW requirements. | |
892 | */ | |
893 | if (IS_CHERRYVIEW(dev)) { | |
894 | *error_ppm = 0; | |
895 | ||
896 | return calculated_clock->p > best_clock->p; | |
897 | } | |
898 | ||
899 | if (WARN_ON_ONCE(!target_freq)) | |
900 | return false; | |
901 | ||
902 | *error_ppm = div_u64(1000000ULL * | |
903 | abs(target_freq - calculated_clock->dot), | |
904 | target_freq); | |
905 | /* | |
906 | * Prefer a better P value over a better (smaller) error if the error | |
907 | * is small. Ensure this preference for future configurations too by | |
908 | * setting the error to 0. | |
909 | */ | |
910 | if (*error_ppm < 100 && calculated_clock->p > best_clock->p) { | |
911 | *error_ppm = 0; | |
912 | ||
913 | return true; | |
914 | } | |
915 | ||
916 | return *error_ppm + 10 < best_error_ppm; | |
917 | } | |
918 | ||
919 | /* | |
920 | * Returns a set of divisors for the desired target clock with the given | |
921 | * refclk, or FALSE. The returned values represent the clock equation: | |
922 | * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. | |
923 | */ | |
924 | static bool | |
925 | vlv_find_best_dpll(const struct intel_limit *limit, | |
926 | struct intel_crtc_state *crtc_state, | |
927 | int target, int refclk, struct dpll *match_clock, | |
928 | struct dpll *best_clock) | |
929 | { | |
930 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); | |
931 | struct drm_device *dev = crtc->base.dev; | |
932 | struct dpll clock; | |
933 | unsigned int bestppm = 1000000; | |
934 | /* min update 19.2 MHz */ | |
935 | int max_n = min(limit->n.max, refclk / 19200); | |
936 | bool found = false; | |
937 | ||
938 | target *= 5; /* fast clock */ | |
939 | ||
940 | memset(best_clock, 0, sizeof(*best_clock)); | |
941 | ||
942 | /* based on hardware requirement, prefer smaller n to precision */ | |
943 | for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) { | |
944 | for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) { | |
945 | for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow; | |
946 | clock.p2 -= clock.p2 > 10 ? 2 : 1) { | |
947 | clock.p = clock.p1 * clock.p2; | |
948 | /* based on hardware requirement, prefer bigger m1,m2 values */ | |
949 | for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) { | |
950 | unsigned int ppm; | |
951 | ||
952 | clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n, | |
953 | refclk * clock.m1); | |
954 | ||
955 | vlv_calc_dpll_params(refclk, &clock); | |
956 | ||
957 | if (!intel_PLL_is_valid(dev, limit, | |
958 | &clock)) | |
959 | continue; | |
960 | ||
961 | if (!vlv_PLL_is_optimal(dev, target, | |
962 | &clock, | |
963 | best_clock, | |
964 | bestppm, &ppm)) | |
965 | continue; | |
966 | ||
967 | *best_clock = clock; | |
968 | bestppm = ppm; | |
969 | found = true; | |
970 | } | |
971 | } | |
972 | } | |
973 | } | |
974 | ||
975 | return found; | |
976 | } | |
977 | ||
978 | /* | |
979 | * Returns a set of divisors for the desired target clock with the given | |
980 | * refclk, or FALSE. The returned values represent the clock equation: | |
981 | * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. | |
982 | */ | |
983 | static bool | |
984 | chv_find_best_dpll(const struct intel_limit *limit, | |
985 | struct intel_crtc_state *crtc_state, | |
986 | int target, int refclk, struct dpll *match_clock, | |
987 | struct dpll *best_clock) | |
988 | { | |
989 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); | |
990 | struct drm_device *dev = crtc->base.dev; | |
991 | unsigned int best_error_ppm; | |
992 | struct dpll clock; | |
993 | uint64_t m2; | |
994 | int found = false; | |
995 | ||
996 | memset(best_clock, 0, sizeof(*best_clock)); | |
997 | best_error_ppm = 1000000; | |
998 | ||
999 | /* | |
1000 | * Based on hardware doc, the n always set to 1, and m1 always | |
1001 | * set to 2. If requires to support 200Mhz refclk, we need to | |
1002 | * revisit this because n may not 1 anymore. | |
1003 | */ | |
1004 | clock.n = 1, clock.m1 = 2; | |
1005 | target *= 5; /* fast clock */ | |
1006 | ||
1007 | for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) { | |
1008 | for (clock.p2 = limit->p2.p2_fast; | |
1009 | clock.p2 >= limit->p2.p2_slow; | |
1010 | clock.p2 -= clock.p2 > 10 ? 2 : 1) { | |
1011 | unsigned int error_ppm; | |
1012 | ||
1013 | clock.p = clock.p1 * clock.p2; | |
1014 | ||
1015 | m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p * | |
1016 | clock.n) << 22, refclk * clock.m1); | |
1017 | ||
1018 | if (m2 > INT_MAX/clock.m1) | |
1019 | continue; | |
1020 | ||
1021 | clock.m2 = m2; | |
1022 | ||
1023 | chv_calc_dpll_params(refclk, &clock); | |
1024 | ||
1025 | if (!intel_PLL_is_valid(dev, limit, &clock)) | |
1026 | continue; | |
1027 | ||
1028 | if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock, | |
1029 | best_error_ppm, &error_ppm)) | |
1030 | continue; | |
1031 | ||
1032 | *best_clock = clock; | |
1033 | best_error_ppm = error_ppm; | |
1034 | found = true; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | return found; | |
1039 | } | |
1040 | ||
1041 | bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock, | |
1042 | struct dpll *best_clock) | |
1043 | { | |
1044 | int refclk = 100000; | |
1045 | const struct intel_limit *limit = &intel_limits_bxt; | |
1046 | ||
1047 | return chv_find_best_dpll(limit, crtc_state, | |
1048 | target_clock, refclk, NULL, best_clock); | |
1049 | } | |
1050 | ||
1051 | bool intel_crtc_active(struct drm_crtc *crtc) | |
1052 | { | |
1053 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1054 | ||
1055 | /* Be paranoid as we can arrive here with only partial | |
1056 | * state retrieved from the hardware during setup. | |
1057 | * | |
1058 | * We can ditch the adjusted_mode.crtc_clock check as soon | |
1059 | * as Haswell has gained clock readout/fastboot support. | |
1060 | * | |
1061 | * We can ditch the crtc->primary->fb check as soon as we can | |
1062 | * properly reconstruct framebuffers. | |
1063 | * | |
1064 | * FIXME: The intel_crtc->active here should be switched to | |
1065 | * crtc->state->active once we have proper CRTC states wired up | |
1066 | * for atomic. | |
1067 | */ | |
1068 | return intel_crtc->active && crtc->primary->state->fb && | |
1069 | intel_crtc->config->base.adjusted_mode.crtc_clock; | |
1070 | } | |
1071 | ||
1072 | enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv, | |
1073 | enum pipe pipe) | |
1074 | { | |
1075 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
1076 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1077 | ||
1078 | return intel_crtc->config->cpu_transcoder; | |
1079 | } | |
1080 | ||
1081 | static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe) | |
1082 | { | |
1083 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1084 | i915_reg_t reg = PIPEDSL(pipe); | |
1085 | u32 line1, line2; | |
1086 | u32 line_mask; | |
1087 | ||
1088 | if (IS_GEN2(dev)) | |
1089 | line_mask = DSL_LINEMASK_GEN2; | |
1090 | else | |
1091 | line_mask = DSL_LINEMASK_GEN3; | |
1092 | ||
1093 | line1 = I915_READ(reg) & line_mask; | |
1094 | msleep(5); | |
1095 | line2 = I915_READ(reg) & line_mask; | |
1096 | ||
1097 | return line1 == line2; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * intel_wait_for_pipe_off - wait for pipe to turn off | |
1102 | * @crtc: crtc whose pipe to wait for | |
1103 | * | |
1104 | * After disabling a pipe, we can't wait for vblank in the usual way, | |
1105 | * spinning on the vblank interrupt status bit, since we won't actually | |
1106 | * see an interrupt when the pipe is disabled. | |
1107 | * | |
1108 | * On Gen4 and above: | |
1109 | * wait for the pipe register state bit to turn off | |
1110 | * | |
1111 | * Otherwise: | |
1112 | * wait for the display line value to settle (it usually | |
1113 | * ends up stopping at the start of the next frame). | |
1114 | * | |
1115 | */ | |
1116 | static void intel_wait_for_pipe_off(struct intel_crtc *crtc) | |
1117 | { | |
1118 | struct drm_device *dev = crtc->base.dev; | |
1119 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1120 | enum transcoder cpu_transcoder = crtc->config->cpu_transcoder; | |
1121 | enum pipe pipe = crtc->pipe; | |
1122 | ||
1123 | if (INTEL_INFO(dev)->gen >= 4) { | |
1124 | i915_reg_t reg = PIPECONF(cpu_transcoder); | |
1125 | ||
1126 | /* Wait for the Pipe State to go off */ | |
1127 | if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0, | |
1128 | 100)) | |
1129 | WARN(1, "pipe_off wait timed out\n"); | |
1130 | } else { | |
1131 | /* Wait for the display line to settle */ | |
1132 | if (wait_for(pipe_dsl_stopped(dev, pipe), 100)) | |
1133 | WARN(1, "pipe_off wait timed out\n"); | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | /* Only for pre-ILK configs */ | |
1138 | void assert_pll(struct drm_i915_private *dev_priv, | |
1139 | enum pipe pipe, bool state) | |
1140 | { | |
1141 | u32 val; | |
1142 | bool cur_state; | |
1143 | ||
1144 | val = I915_READ(DPLL(pipe)); | |
1145 | cur_state = !!(val & DPLL_VCO_ENABLE); | |
1146 | I915_STATE_WARN(cur_state != state, | |
1147 | "PLL state assertion failure (expected %s, current %s)\n", | |
1148 | onoff(state), onoff(cur_state)); | |
1149 | } | |
1150 | ||
1151 | /* XXX: the dsi pll is shared between MIPI DSI ports */ | |
1152 | void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state) | |
1153 | { | |
1154 | u32 val; | |
1155 | bool cur_state; | |
1156 | ||
1157 | mutex_lock(&dev_priv->sb_lock); | |
1158 | val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL); | |
1159 | mutex_unlock(&dev_priv->sb_lock); | |
1160 | ||
1161 | cur_state = val & DSI_PLL_VCO_EN; | |
1162 | I915_STATE_WARN(cur_state != state, | |
1163 | "DSI PLL state assertion failure (expected %s, current %s)\n", | |
1164 | onoff(state), onoff(cur_state)); | |
1165 | } | |
1166 | ||
1167 | static void assert_fdi_tx(struct drm_i915_private *dev_priv, | |
1168 | enum pipe pipe, bool state) | |
1169 | { | |
1170 | bool cur_state; | |
1171 | enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, | |
1172 | pipe); | |
1173 | ||
1174 | if (HAS_DDI(dev_priv)) { | |
1175 | /* DDI does not have a specific FDI_TX register */ | |
1176 | u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
1177 | cur_state = !!(val & TRANS_DDI_FUNC_ENABLE); | |
1178 | } else { | |
1179 | u32 val = I915_READ(FDI_TX_CTL(pipe)); | |
1180 | cur_state = !!(val & FDI_TX_ENABLE); | |
1181 | } | |
1182 | I915_STATE_WARN(cur_state != state, | |
1183 | "FDI TX state assertion failure (expected %s, current %s)\n", | |
1184 | onoff(state), onoff(cur_state)); | |
1185 | } | |
1186 | #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true) | |
1187 | #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false) | |
1188 | ||
1189 | static void assert_fdi_rx(struct drm_i915_private *dev_priv, | |
1190 | enum pipe pipe, bool state) | |
1191 | { | |
1192 | u32 val; | |
1193 | bool cur_state; | |
1194 | ||
1195 | val = I915_READ(FDI_RX_CTL(pipe)); | |
1196 | cur_state = !!(val & FDI_RX_ENABLE); | |
1197 | I915_STATE_WARN(cur_state != state, | |
1198 | "FDI RX state assertion failure (expected %s, current %s)\n", | |
1199 | onoff(state), onoff(cur_state)); | |
1200 | } | |
1201 | #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true) | |
1202 | #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false) | |
1203 | ||
1204 | static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv, | |
1205 | enum pipe pipe) | |
1206 | { | |
1207 | u32 val; | |
1208 | ||
1209 | /* ILK FDI PLL is always enabled */ | |
1210 | if (IS_GEN5(dev_priv)) | |
1211 | return; | |
1212 | ||
1213 | /* On Haswell, DDI ports are responsible for the FDI PLL setup */ | |
1214 | if (HAS_DDI(dev_priv)) | |
1215 | return; | |
1216 | ||
1217 | val = I915_READ(FDI_TX_CTL(pipe)); | |
1218 | I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n"); | |
1219 | } | |
1220 | ||
1221 | void assert_fdi_rx_pll(struct drm_i915_private *dev_priv, | |
1222 | enum pipe pipe, bool state) | |
1223 | { | |
1224 | u32 val; | |
1225 | bool cur_state; | |
1226 | ||
1227 | val = I915_READ(FDI_RX_CTL(pipe)); | |
1228 | cur_state = !!(val & FDI_RX_PLL_ENABLE); | |
1229 | I915_STATE_WARN(cur_state != state, | |
1230 | "FDI RX PLL assertion failure (expected %s, current %s)\n", | |
1231 | onoff(state), onoff(cur_state)); | |
1232 | } | |
1233 | ||
1234 | void assert_panel_unlocked(struct drm_i915_private *dev_priv, | |
1235 | enum pipe pipe) | |
1236 | { | |
1237 | struct drm_device *dev = dev_priv->dev; | |
1238 | i915_reg_t pp_reg; | |
1239 | u32 val; | |
1240 | enum pipe panel_pipe = PIPE_A; | |
1241 | bool locked = true; | |
1242 | ||
1243 | if (WARN_ON(HAS_DDI(dev))) | |
1244 | return; | |
1245 | ||
1246 | if (HAS_PCH_SPLIT(dev)) { | |
1247 | u32 port_sel; | |
1248 | ||
1249 | pp_reg = PCH_PP_CONTROL; | |
1250 | port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK; | |
1251 | ||
1252 | if (port_sel == PANEL_PORT_SELECT_LVDS && | |
1253 | I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT) | |
1254 | panel_pipe = PIPE_B; | |
1255 | /* XXX: else fix for eDP */ | |
1256 | } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
1257 | /* presumably write lock depends on pipe, not port select */ | |
1258 | pp_reg = VLV_PIPE_PP_CONTROL(pipe); | |
1259 | panel_pipe = pipe; | |
1260 | } else { | |
1261 | pp_reg = PP_CONTROL; | |
1262 | if (I915_READ(LVDS) & LVDS_PIPEB_SELECT) | |
1263 | panel_pipe = PIPE_B; | |
1264 | } | |
1265 | ||
1266 | val = I915_READ(pp_reg); | |
1267 | if (!(val & PANEL_POWER_ON) || | |
1268 | ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS)) | |
1269 | locked = false; | |
1270 | ||
1271 | I915_STATE_WARN(panel_pipe == pipe && locked, | |
1272 | "panel assertion failure, pipe %c regs locked\n", | |
1273 | pipe_name(pipe)); | |
1274 | } | |
1275 | ||
1276 | static void assert_cursor(struct drm_i915_private *dev_priv, | |
1277 | enum pipe pipe, bool state) | |
1278 | { | |
1279 | struct drm_device *dev = dev_priv->dev; | |
1280 | bool cur_state; | |
1281 | ||
1282 | if (IS_845G(dev) || IS_I865G(dev)) | |
1283 | cur_state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE; | |
1284 | else | |
1285 | cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE; | |
1286 | ||
1287 | I915_STATE_WARN(cur_state != state, | |
1288 | "cursor on pipe %c assertion failure (expected %s, current %s)\n", | |
1289 | pipe_name(pipe), onoff(state), onoff(cur_state)); | |
1290 | } | |
1291 | #define assert_cursor_enabled(d, p) assert_cursor(d, p, true) | |
1292 | #define assert_cursor_disabled(d, p) assert_cursor(d, p, false) | |
1293 | ||
1294 | void assert_pipe(struct drm_i915_private *dev_priv, | |
1295 | enum pipe pipe, bool state) | |
1296 | { | |
1297 | bool cur_state; | |
1298 | enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, | |
1299 | pipe); | |
1300 | enum intel_display_power_domain power_domain; | |
1301 | ||
1302 | /* if we need the pipe quirk it must be always on */ | |
1303 | if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) || | |
1304 | (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)) | |
1305 | state = true; | |
1306 | ||
1307 | power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder); | |
1308 | if (intel_display_power_get_if_enabled(dev_priv, power_domain)) { | |
1309 | u32 val = I915_READ(PIPECONF(cpu_transcoder)); | |
1310 | cur_state = !!(val & PIPECONF_ENABLE); | |
1311 | ||
1312 | intel_display_power_put(dev_priv, power_domain); | |
1313 | } else { | |
1314 | cur_state = false; | |
1315 | } | |
1316 | ||
1317 | I915_STATE_WARN(cur_state != state, | |
1318 | "pipe %c assertion failure (expected %s, current %s)\n", | |
1319 | pipe_name(pipe), onoff(state), onoff(cur_state)); | |
1320 | } | |
1321 | ||
1322 | static void assert_plane(struct drm_i915_private *dev_priv, | |
1323 | enum plane plane, bool state) | |
1324 | { | |
1325 | u32 val; | |
1326 | bool cur_state; | |
1327 | ||
1328 | val = I915_READ(DSPCNTR(plane)); | |
1329 | cur_state = !!(val & DISPLAY_PLANE_ENABLE); | |
1330 | I915_STATE_WARN(cur_state != state, | |
1331 | "plane %c assertion failure (expected %s, current %s)\n", | |
1332 | plane_name(plane), onoff(state), onoff(cur_state)); | |
1333 | } | |
1334 | ||
1335 | #define assert_plane_enabled(d, p) assert_plane(d, p, true) | |
1336 | #define assert_plane_disabled(d, p) assert_plane(d, p, false) | |
1337 | ||
1338 | static void assert_planes_disabled(struct drm_i915_private *dev_priv, | |
1339 | enum pipe pipe) | |
1340 | { | |
1341 | struct drm_device *dev = dev_priv->dev; | |
1342 | int i; | |
1343 | ||
1344 | /* Primary planes are fixed to pipes on gen4+ */ | |
1345 | if (INTEL_INFO(dev)->gen >= 4) { | |
1346 | u32 val = I915_READ(DSPCNTR(pipe)); | |
1347 | I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE, | |
1348 | "plane %c assertion failure, should be disabled but not\n", | |
1349 | plane_name(pipe)); | |
1350 | return; | |
1351 | } | |
1352 | ||
1353 | /* Need to check both planes against the pipe */ | |
1354 | for_each_pipe(dev_priv, i) { | |
1355 | u32 val = I915_READ(DSPCNTR(i)); | |
1356 | enum pipe cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >> | |
1357 | DISPPLANE_SEL_PIPE_SHIFT; | |
1358 | I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe, | |
1359 | "plane %c assertion failure, should be off on pipe %c but is still active\n", | |
1360 | plane_name(i), pipe_name(pipe)); | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | static void assert_sprites_disabled(struct drm_i915_private *dev_priv, | |
1365 | enum pipe pipe) | |
1366 | { | |
1367 | struct drm_device *dev = dev_priv->dev; | |
1368 | int sprite; | |
1369 | ||
1370 | if (INTEL_INFO(dev)->gen >= 9) { | |
1371 | for_each_sprite(dev_priv, pipe, sprite) { | |
1372 | u32 val = I915_READ(PLANE_CTL(pipe, sprite)); | |
1373 | I915_STATE_WARN(val & PLANE_CTL_ENABLE, | |
1374 | "plane %d assertion failure, should be off on pipe %c but is still active\n", | |
1375 | sprite, pipe_name(pipe)); | |
1376 | } | |
1377 | } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
1378 | for_each_sprite(dev_priv, pipe, sprite) { | |
1379 | u32 val = I915_READ(SPCNTR(pipe, sprite)); | |
1380 | I915_STATE_WARN(val & SP_ENABLE, | |
1381 | "sprite %c assertion failure, should be off on pipe %c but is still active\n", | |
1382 | sprite_name(pipe, sprite), pipe_name(pipe)); | |
1383 | } | |
1384 | } else if (INTEL_INFO(dev)->gen >= 7) { | |
1385 | u32 val = I915_READ(SPRCTL(pipe)); | |
1386 | I915_STATE_WARN(val & SPRITE_ENABLE, | |
1387 | "sprite %c assertion failure, should be off on pipe %c but is still active\n", | |
1388 | plane_name(pipe), pipe_name(pipe)); | |
1389 | } else if (INTEL_INFO(dev)->gen >= 5) { | |
1390 | u32 val = I915_READ(DVSCNTR(pipe)); | |
1391 | I915_STATE_WARN(val & DVS_ENABLE, | |
1392 | "sprite %c assertion failure, should be off on pipe %c but is still active\n", | |
1393 | plane_name(pipe), pipe_name(pipe)); | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | static void assert_vblank_disabled(struct drm_crtc *crtc) | |
1398 | { | |
1399 | if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0)) | |
1400 | drm_crtc_vblank_put(crtc); | |
1401 | } | |
1402 | ||
1403 | void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv, | |
1404 | enum pipe pipe) | |
1405 | { | |
1406 | u32 val; | |
1407 | bool enabled; | |
1408 | ||
1409 | val = I915_READ(PCH_TRANSCONF(pipe)); | |
1410 | enabled = !!(val & TRANS_ENABLE); | |
1411 | I915_STATE_WARN(enabled, | |
1412 | "transcoder assertion failed, should be off on pipe %c but is still active\n", | |
1413 | pipe_name(pipe)); | |
1414 | } | |
1415 | ||
1416 | static bool dp_pipe_enabled(struct drm_i915_private *dev_priv, | |
1417 | enum pipe pipe, u32 port_sel, u32 val) | |
1418 | { | |
1419 | if ((val & DP_PORT_EN) == 0) | |
1420 | return false; | |
1421 | ||
1422 | if (HAS_PCH_CPT(dev_priv)) { | |
1423 | u32 trans_dp_ctl = I915_READ(TRANS_DP_CTL(pipe)); | |
1424 | if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel) | |
1425 | return false; | |
1426 | } else if (IS_CHERRYVIEW(dev_priv)) { | |
1427 | if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe)) | |
1428 | return false; | |
1429 | } else { | |
1430 | if ((val & DP_PIPE_MASK) != (pipe << 30)) | |
1431 | return false; | |
1432 | } | |
1433 | return true; | |
1434 | } | |
1435 | ||
1436 | static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv, | |
1437 | enum pipe pipe, u32 val) | |
1438 | { | |
1439 | if ((val & SDVO_ENABLE) == 0) | |
1440 | return false; | |
1441 | ||
1442 | if (HAS_PCH_CPT(dev_priv)) { | |
1443 | if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe)) | |
1444 | return false; | |
1445 | } else if (IS_CHERRYVIEW(dev_priv)) { | |
1446 | if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe)) | |
1447 | return false; | |
1448 | } else { | |
1449 | if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe)) | |
1450 | return false; | |
1451 | } | |
1452 | return true; | |
1453 | } | |
1454 | ||
1455 | static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv, | |
1456 | enum pipe pipe, u32 val) | |
1457 | { | |
1458 | if ((val & LVDS_PORT_EN) == 0) | |
1459 | return false; | |
1460 | ||
1461 | if (HAS_PCH_CPT(dev_priv)) { | |
1462 | if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe)) | |
1463 | return false; | |
1464 | } else { | |
1465 | if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe)) | |
1466 | return false; | |
1467 | } | |
1468 | return true; | |
1469 | } | |
1470 | ||
1471 | static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv, | |
1472 | enum pipe pipe, u32 val) | |
1473 | { | |
1474 | if ((val & ADPA_DAC_ENABLE) == 0) | |
1475 | return false; | |
1476 | if (HAS_PCH_CPT(dev_priv)) { | |
1477 | if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe)) | |
1478 | return false; | |
1479 | } else { | |
1480 | if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe)) | |
1481 | return false; | |
1482 | } | |
1483 | return true; | |
1484 | } | |
1485 | ||
1486 | static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv, | |
1487 | enum pipe pipe, i915_reg_t reg, | |
1488 | u32 port_sel) | |
1489 | { | |
1490 | u32 val = I915_READ(reg); | |
1491 | I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val), | |
1492 | "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n", | |
1493 | i915_mmio_reg_offset(reg), pipe_name(pipe)); | |
1494 | ||
1495 | I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & DP_PORT_EN) == 0 | |
1496 | && (val & DP_PIPEB_SELECT), | |
1497 | "IBX PCH dp port still using transcoder B\n"); | |
1498 | } | |
1499 | ||
1500 | static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv, | |
1501 | enum pipe pipe, i915_reg_t reg) | |
1502 | { | |
1503 | u32 val = I915_READ(reg); | |
1504 | I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val), | |
1505 | "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n", | |
1506 | i915_mmio_reg_offset(reg), pipe_name(pipe)); | |
1507 | ||
1508 | I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & SDVO_ENABLE) == 0 | |
1509 | && (val & SDVO_PIPE_B_SELECT), | |
1510 | "IBX PCH hdmi port still using transcoder B\n"); | |
1511 | } | |
1512 | ||
1513 | static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv, | |
1514 | enum pipe pipe) | |
1515 | { | |
1516 | u32 val; | |
1517 | ||
1518 | assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B); | |
1519 | assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C); | |
1520 | assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D); | |
1521 | ||
1522 | val = I915_READ(PCH_ADPA); | |
1523 | I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val), | |
1524 | "PCH VGA enabled on transcoder %c, should be disabled\n", | |
1525 | pipe_name(pipe)); | |
1526 | ||
1527 | val = I915_READ(PCH_LVDS); | |
1528 | I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val), | |
1529 | "PCH LVDS enabled on transcoder %c, should be disabled\n", | |
1530 | pipe_name(pipe)); | |
1531 | ||
1532 | assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB); | |
1533 | assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC); | |
1534 | assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID); | |
1535 | } | |
1536 | ||
1537 | static void _vlv_enable_pll(struct intel_crtc *crtc, | |
1538 | const struct intel_crtc_state *pipe_config) | |
1539 | { | |
1540 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
1541 | enum pipe pipe = crtc->pipe; | |
1542 | ||
1543 | I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll); | |
1544 | POSTING_READ(DPLL(pipe)); | |
1545 | udelay(150); | |
1546 | ||
1547 | if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1)) | |
1548 | DRM_ERROR("DPLL %d failed to lock\n", pipe); | |
1549 | } | |
1550 | ||
1551 | static void vlv_enable_pll(struct intel_crtc *crtc, | |
1552 | const struct intel_crtc_state *pipe_config) | |
1553 | { | |
1554 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
1555 | enum pipe pipe = crtc->pipe; | |
1556 | ||
1557 | assert_pipe_disabled(dev_priv, pipe); | |
1558 | ||
1559 | /* PLL is protected by panel, make sure we can write it */ | |
1560 | assert_panel_unlocked(dev_priv, pipe); | |
1561 | ||
1562 | if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) | |
1563 | _vlv_enable_pll(crtc, pipe_config); | |
1564 | ||
1565 | I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md); | |
1566 | POSTING_READ(DPLL_MD(pipe)); | |
1567 | } | |
1568 | ||
1569 | ||
1570 | static void _chv_enable_pll(struct intel_crtc *crtc, | |
1571 | const struct intel_crtc_state *pipe_config) | |
1572 | { | |
1573 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
1574 | enum pipe pipe = crtc->pipe; | |
1575 | enum dpio_channel port = vlv_pipe_to_channel(pipe); | |
1576 | u32 tmp; | |
1577 | ||
1578 | mutex_lock(&dev_priv->sb_lock); | |
1579 | ||
1580 | /* Enable back the 10bit clock to display controller */ | |
1581 | tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)); | |
1582 | tmp |= DPIO_DCLKP_EN; | |
1583 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp); | |
1584 | ||
1585 | mutex_unlock(&dev_priv->sb_lock); | |
1586 | ||
1587 | /* | |
1588 | * Need to wait > 100ns between dclkp clock enable bit and PLL enable. | |
1589 | */ | |
1590 | udelay(1); | |
1591 | ||
1592 | /* Enable PLL */ | |
1593 | I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll); | |
1594 | ||
1595 | /* Check PLL is locked */ | |
1596 | if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1)) | |
1597 | DRM_ERROR("PLL %d failed to lock\n", pipe); | |
1598 | } | |
1599 | ||
1600 | static void chv_enable_pll(struct intel_crtc *crtc, | |
1601 | const struct intel_crtc_state *pipe_config) | |
1602 | { | |
1603 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
1604 | enum pipe pipe = crtc->pipe; | |
1605 | ||
1606 | assert_pipe_disabled(dev_priv, pipe); | |
1607 | ||
1608 | /* PLL is protected by panel, make sure we can write it */ | |
1609 | assert_panel_unlocked(dev_priv, pipe); | |
1610 | ||
1611 | if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) | |
1612 | _chv_enable_pll(crtc, pipe_config); | |
1613 | ||
1614 | if (pipe != PIPE_A) { | |
1615 | /* | |
1616 | * WaPixelRepeatModeFixForC0:chv | |
1617 | * | |
1618 | * DPLLCMD is AWOL. Use chicken bits to propagate | |
1619 | * the value from DPLLBMD to either pipe B or C. | |
1620 | */ | |
1621 | I915_WRITE(CBR4_VLV, pipe == PIPE_B ? CBR_DPLLBMD_PIPE_B : CBR_DPLLBMD_PIPE_C); | |
1622 | I915_WRITE(DPLL_MD(PIPE_B), pipe_config->dpll_hw_state.dpll_md); | |
1623 | I915_WRITE(CBR4_VLV, 0); | |
1624 | dev_priv->chv_dpll_md[pipe] = pipe_config->dpll_hw_state.dpll_md; | |
1625 | ||
1626 | /* | |
1627 | * DPLLB VGA mode also seems to cause problems. | |
1628 | * We should always have it disabled. | |
1629 | */ | |
1630 | WARN_ON((I915_READ(DPLL(PIPE_B)) & DPLL_VGA_MODE_DIS) == 0); | |
1631 | } else { | |
1632 | I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md); | |
1633 | POSTING_READ(DPLL_MD(pipe)); | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | static int intel_num_dvo_pipes(struct drm_device *dev) | |
1638 | { | |
1639 | struct intel_crtc *crtc; | |
1640 | int count = 0; | |
1641 | ||
1642 | for_each_intel_crtc(dev, crtc) | |
1643 | count += crtc->base.state->active && | |
1644 | intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO); | |
1645 | ||
1646 | return count; | |
1647 | } | |
1648 | ||
1649 | static void i9xx_enable_pll(struct intel_crtc *crtc) | |
1650 | { | |
1651 | struct drm_device *dev = crtc->base.dev; | |
1652 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1653 | i915_reg_t reg = DPLL(crtc->pipe); | |
1654 | u32 dpll = crtc->config->dpll_hw_state.dpll; | |
1655 | ||
1656 | assert_pipe_disabled(dev_priv, crtc->pipe); | |
1657 | ||
1658 | /* PLL is protected by panel, make sure we can write it */ | |
1659 | if (IS_MOBILE(dev) && !IS_I830(dev)) | |
1660 | assert_panel_unlocked(dev_priv, crtc->pipe); | |
1661 | ||
1662 | /* Enable DVO 2x clock on both PLLs if necessary */ | |
1663 | if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) { | |
1664 | /* | |
1665 | * It appears to be important that we don't enable this | |
1666 | * for the current pipe before otherwise configuring the | |
1667 | * PLL. No idea how this should be handled if multiple | |
1668 | * DVO outputs are enabled simultaneosly. | |
1669 | */ | |
1670 | dpll |= DPLL_DVO_2X_MODE; | |
1671 | I915_WRITE(DPLL(!crtc->pipe), | |
1672 | I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE); | |
1673 | } | |
1674 | ||
1675 | /* | |
1676 | * Apparently we need to have VGA mode enabled prior to changing | |
1677 | * the P1/P2 dividers. Otherwise the DPLL will keep using the old | |
1678 | * dividers, even though the register value does change. | |
1679 | */ | |
1680 | I915_WRITE(reg, 0); | |
1681 | ||
1682 | I915_WRITE(reg, dpll); | |
1683 | ||
1684 | /* Wait for the clocks to stabilize. */ | |
1685 | POSTING_READ(reg); | |
1686 | udelay(150); | |
1687 | ||
1688 | if (INTEL_INFO(dev)->gen >= 4) { | |
1689 | I915_WRITE(DPLL_MD(crtc->pipe), | |
1690 | crtc->config->dpll_hw_state.dpll_md); | |
1691 | } else { | |
1692 | /* The pixel multiplier can only be updated once the | |
1693 | * DPLL is enabled and the clocks are stable. | |
1694 | * | |
1695 | * So write it again. | |
1696 | */ | |
1697 | I915_WRITE(reg, dpll); | |
1698 | } | |
1699 | ||
1700 | /* We do this three times for luck */ | |
1701 | I915_WRITE(reg, dpll); | |
1702 | POSTING_READ(reg); | |
1703 | udelay(150); /* wait for warmup */ | |
1704 | I915_WRITE(reg, dpll); | |
1705 | POSTING_READ(reg); | |
1706 | udelay(150); /* wait for warmup */ | |
1707 | I915_WRITE(reg, dpll); | |
1708 | POSTING_READ(reg); | |
1709 | udelay(150); /* wait for warmup */ | |
1710 | } | |
1711 | ||
1712 | /** | |
1713 | * i9xx_disable_pll - disable a PLL | |
1714 | * @dev_priv: i915 private structure | |
1715 | * @pipe: pipe PLL to disable | |
1716 | * | |
1717 | * Disable the PLL for @pipe, making sure the pipe is off first. | |
1718 | * | |
1719 | * Note! This is for pre-ILK only. | |
1720 | */ | |
1721 | static void i9xx_disable_pll(struct intel_crtc *crtc) | |
1722 | { | |
1723 | struct drm_device *dev = crtc->base.dev; | |
1724 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1725 | enum pipe pipe = crtc->pipe; | |
1726 | ||
1727 | /* Disable DVO 2x clock on both PLLs if necessary */ | |
1728 | if (IS_I830(dev) && | |
1729 | intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) && | |
1730 | !intel_num_dvo_pipes(dev)) { | |
1731 | I915_WRITE(DPLL(PIPE_B), | |
1732 | I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE); | |
1733 | I915_WRITE(DPLL(PIPE_A), | |
1734 | I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE); | |
1735 | } | |
1736 | ||
1737 | /* Don't disable pipe or pipe PLLs if needed */ | |
1738 | if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) || | |
1739 | (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)) | |
1740 | return; | |
1741 | ||
1742 | /* Make sure the pipe isn't still relying on us */ | |
1743 | assert_pipe_disabled(dev_priv, pipe); | |
1744 | ||
1745 | I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS); | |
1746 | POSTING_READ(DPLL(pipe)); | |
1747 | } | |
1748 | ||
1749 | static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe) | |
1750 | { | |
1751 | u32 val; | |
1752 | ||
1753 | /* Make sure the pipe isn't still relying on us */ | |
1754 | assert_pipe_disabled(dev_priv, pipe); | |
1755 | ||
1756 | val = DPLL_INTEGRATED_REF_CLK_VLV | | |
1757 | DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS; | |
1758 | if (pipe != PIPE_A) | |
1759 | val |= DPLL_INTEGRATED_CRI_CLK_VLV; | |
1760 | ||
1761 | I915_WRITE(DPLL(pipe), val); | |
1762 | POSTING_READ(DPLL(pipe)); | |
1763 | } | |
1764 | ||
1765 | static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe) | |
1766 | { | |
1767 | enum dpio_channel port = vlv_pipe_to_channel(pipe); | |
1768 | u32 val; | |
1769 | ||
1770 | /* Make sure the pipe isn't still relying on us */ | |
1771 | assert_pipe_disabled(dev_priv, pipe); | |
1772 | ||
1773 | val = DPLL_SSC_REF_CLK_CHV | | |
1774 | DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS; | |
1775 | if (pipe != PIPE_A) | |
1776 | val |= DPLL_INTEGRATED_CRI_CLK_VLV; | |
1777 | ||
1778 | I915_WRITE(DPLL(pipe), val); | |
1779 | POSTING_READ(DPLL(pipe)); | |
1780 | ||
1781 | mutex_lock(&dev_priv->sb_lock); | |
1782 | ||
1783 | /* Disable 10bit clock to display controller */ | |
1784 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)); | |
1785 | val &= ~DPIO_DCLKP_EN; | |
1786 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val); | |
1787 | ||
1788 | mutex_unlock(&dev_priv->sb_lock); | |
1789 | } | |
1790 | ||
1791 | void vlv_wait_port_ready(struct drm_i915_private *dev_priv, | |
1792 | struct intel_digital_port *dport, | |
1793 | unsigned int expected_mask) | |
1794 | { | |
1795 | u32 port_mask; | |
1796 | i915_reg_t dpll_reg; | |
1797 | ||
1798 | switch (dport->port) { | |
1799 | case PORT_B: | |
1800 | port_mask = DPLL_PORTB_READY_MASK; | |
1801 | dpll_reg = DPLL(0); | |
1802 | break; | |
1803 | case PORT_C: | |
1804 | port_mask = DPLL_PORTC_READY_MASK; | |
1805 | dpll_reg = DPLL(0); | |
1806 | expected_mask <<= 4; | |
1807 | break; | |
1808 | case PORT_D: | |
1809 | port_mask = DPLL_PORTD_READY_MASK; | |
1810 | dpll_reg = DPIO_PHY_STATUS; | |
1811 | break; | |
1812 | default: | |
1813 | BUG(); | |
1814 | } | |
1815 | ||
1816 | if (wait_for((I915_READ(dpll_reg) & port_mask) == expected_mask, 1000)) | |
1817 | WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n", | |
1818 | port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask); | |
1819 | } | |
1820 | ||
1821 | static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv, | |
1822 | enum pipe pipe) | |
1823 | { | |
1824 | struct drm_device *dev = dev_priv->dev; | |
1825 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
1826 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1827 | i915_reg_t reg; | |
1828 | uint32_t val, pipeconf_val; | |
1829 | ||
1830 | /* Make sure PCH DPLL is enabled */ | |
1831 | assert_shared_dpll_enabled(dev_priv, intel_crtc->config->shared_dpll); | |
1832 | ||
1833 | /* FDI must be feeding us bits for PCH ports */ | |
1834 | assert_fdi_tx_enabled(dev_priv, pipe); | |
1835 | assert_fdi_rx_enabled(dev_priv, pipe); | |
1836 | ||
1837 | if (HAS_PCH_CPT(dev)) { | |
1838 | /* Workaround: Set the timing override bit before enabling the | |
1839 | * pch transcoder. */ | |
1840 | reg = TRANS_CHICKEN2(pipe); | |
1841 | val = I915_READ(reg); | |
1842 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
1843 | I915_WRITE(reg, val); | |
1844 | } | |
1845 | ||
1846 | reg = PCH_TRANSCONF(pipe); | |
1847 | val = I915_READ(reg); | |
1848 | pipeconf_val = I915_READ(PIPECONF(pipe)); | |
1849 | ||
1850 | if (HAS_PCH_IBX(dev_priv)) { | |
1851 | /* | |
1852 | * Make the BPC in transcoder be consistent with | |
1853 | * that in pipeconf reg. For HDMI we must use 8bpc | |
1854 | * here for both 8bpc and 12bpc. | |
1855 | */ | |
1856 | val &= ~PIPECONF_BPC_MASK; | |
1857 | if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI)) | |
1858 | val |= PIPECONF_8BPC; | |
1859 | else | |
1860 | val |= pipeconf_val & PIPECONF_BPC_MASK; | |
1861 | } | |
1862 | ||
1863 | val &= ~TRANS_INTERLACE_MASK; | |
1864 | if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK) | |
1865 | if (HAS_PCH_IBX(dev_priv) && | |
1866 | intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO)) | |
1867 | val |= TRANS_LEGACY_INTERLACED_ILK; | |
1868 | else | |
1869 | val |= TRANS_INTERLACED; | |
1870 | else | |
1871 | val |= TRANS_PROGRESSIVE; | |
1872 | ||
1873 | I915_WRITE(reg, val | TRANS_ENABLE); | |
1874 | if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100)) | |
1875 | DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe)); | |
1876 | } | |
1877 | ||
1878 | static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv, | |
1879 | enum transcoder cpu_transcoder) | |
1880 | { | |
1881 | u32 val, pipeconf_val; | |
1882 | ||
1883 | /* FDI must be feeding us bits for PCH ports */ | |
1884 | assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder); | |
1885 | assert_fdi_rx_enabled(dev_priv, TRANSCODER_A); | |
1886 | ||
1887 | /* Workaround: set timing override bit. */ | |
1888 | val = I915_READ(TRANS_CHICKEN2(PIPE_A)); | |
1889 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
1890 | I915_WRITE(TRANS_CHICKEN2(PIPE_A), val); | |
1891 | ||
1892 | val = TRANS_ENABLE; | |
1893 | pipeconf_val = I915_READ(PIPECONF(cpu_transcoder)); | |
1894 | ||
1895 | if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) == | |
1896 | PIPECONF_INTERLACED_ILK) | |
1897 | val |= TRANS_INTERLACED; | |
1898 | else | |
1899 | val |= TRANS_PROGRESSIVE; | |
1900 | ||
1901 | I915_WRITE(LPT_TRANSCONF, val); | |
1902 | if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100)) | |
1903 | DRM_ERROR("Failed to enable PCH transcoder\n"); | |
1904 | } | |
1905 | ||
1906 | static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv, | |
1907 | enum pipe pipe) | |
1908 | { | |
1909 | struct drm_device *dev = dev_priv->dev; | |
1910 | i915_reg_t reg; | |
1911 | uint32_t val; | |
1912 | ||
1913 | /* FDI relies on the transcoder */ | |
1914 | assert_fdi_tx_disabled(dev_priv, pipe); | |
1915 | assert_fdi_rx_disabled(dev_priv, pipe); | |
1916 | ||
1917 | /* Ports must be off as well */ | |
1918 | assert_pch_ports_disabled(dev_priv, pipe); | |
1919 | ||
1920 | reg = PCH_TRANSCONF(pipe); | |
1921 | val = I915_READ(reg); | |
1922 | val &= ~TRANS_ENABLE; | |
1923 | I915_WRITE(reg, val); | |
1924 | /* wait for PCH transcoder off, transcoder state */ | |
1925 | if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50)) | |
1926 | DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe)); | |
1927 | ||
1928 | if (HAS_PCH_CPT(dev)) { | |
1929 | /* Workaround: Clear the timing override chicken bit again. */ | |
1930 | reg = TRANS_CHICKEN2(pipe); | |
1931 | val = I915_READ(reg); | |
1932 | val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE; | |
1933 | I915_WRITE(reg, val); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv) | |
1938 | { | |
1939 | u32 val; | |
1940 | ||
1941 | val = I915_READ(LPT_TRANSCONF); | |
1942 | val &= ~TRANS_ENABLE; | |
1943 | I915_WRITE(LPT_TRANSCONF, val); | |
1944 | /* wait for PCH transcoder off, transcoder state */ | |
1945 | if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50)) | |
1946 | DRM_ERROR("Failed to disable PCH transcoder\n"); | |
1947 | ||
1948 | /* Workaround: clear timing override bit. */ | |
1949 | val = I915_READ(TRANS_CHICKEN2(PIPE_A)); | |
1950 | val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE; | |
1951 | I915_WRITE(TRANS_CHICKEN2(PIPE_A), val); | |
1952 | } | |
1953 | ||
1954 | /** | |
1955 | * intel_enable_pipe - enable a pipe, asserting requirements | |
1956 | * @crtc: crtc responsible for the pipe | |
1957 | * | |
1958 | * Enable @crtc's pipe, making sure that various hardware specific requirements | |
1959 | * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc. | |
1960 | */ | |
1961 | static void intel_enable_pipe(struct intel_crtc *crtc) | |
1962 | { | |
1963 | struct drm_device *dev = crtc->base.dev; | |
1964 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1965 | enum pipe pipe = crtc->pipe; | |
1966 | enum transcoder cpu_transcoder = crtc->config->cpu_transcoder; | |
1967 | enum pipe pch_transcoder; | |
1968 | i915_reg_t reg; | |
1969 | u32 val; | |
1970 | ||
1971 | DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe)); | |
1972 | ||
1973 | assert_planes_disabled(dev_priv, pipe); | |
1974 | assert_cursor_disabled(dev_priv, pipe); | |
1975 | assert_sprites_disabled(dev_priv, pipe); | |
1976 | ||
1977 | if (HAS_PCH_LPT(dev_priv)) | |
1978 | pch_transcoder = TRANSCODER_A; | |
1979 | else | |
1980 | pch_transcoder = pipe; | |
1981 | ||
1982 | /* | |
1983 | * A pipe without a PLL won't actually be able to drive bits from | |
1984 | * a plane. On ILK+ the pipe PLLs are integrated, so we don't | |
1985 | * need the check. | |
1986 | */ | |
1987 | if (HAS_GMCH_DISPLAY(dev_priv)) | |
1988 | if (crtc->config->has_dsi_encoder) | |
1989 | assert_dsi_pll_enabled(dev_priv); | |
1990 | else | |
1991 | assert_pll_enabled(dev_priv, pipe); | |
1992 | else { | |
1993 | if (crtc->config->has_pch_encoder) { | |
1994 | /* if driving the PCH, we need FDI enabled */ | |
1995 | assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder); | |
1996 | assert_fdi_tx_pll_enabled(dev_priv, | |
1997 | (enum pipe) cpu_transcoder); | |
1998 | } | |
1999 | /* FIXME: assert CPU port conditions for SNB+ */ | |
2000 | } | |
2001 | ||
2002 | reg = PIPECONF(cpu_transcoder); | |
2003 | val = I915_READ(reg); | |
2004 | if (val & PIPECONF_ENABLE) { | |
2005 | WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) || | |
2006 | (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))); | |
2007 | return; | |
2008 | } | |
2009 | ||
2010 | I915_WRITE(reg, val | PIPECONF_ENABLE); | |
2011 | POSTING_READ(reg); | |
2012 | ||
2013 | /* | |
2014 | * Until the pipe starts DSL will read as 0, which would cause | |
2015 | * an apparent vblank timestamp jump, which messes up also the | |
2016 | * frame count when it's derived from the timestamps. So let's | |
2017 | * wait for the pipe to start properly before we call | |
2018 | * drm_crtc_vblank_on() | |
2019 | */ | |
2020 | if (dev->max_vblank_count == 0 && | |
2021 | wait_for(intel_get_crtc_scanline(crtc) != crtc->scanline_offset, 50)) | |
2022 | DRM_ERROR("pipe %c didn't start\n", pipe_name(pipe)); | |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * intel_disable_pipe - disable a pipe, asserting requirements | |
2027 | * @crtc: crtc whose pipes is to be disabled | |
2028 | * | |
2029 | * Disable the pipe of @crtc, making sure that various hardware | |
2030 | * specific requirements are met, if applicable, e.g. plane | |
2031 | * disabled, panel fitter off, etc. | |
2032 | * | |
2033 | * Will wait until the pipe has shut down before returning. | |
2034 | */ | |
2035 | static void intel_disable_pipe(struct intel_crtc *crtc) | |
2036 | { | |
2037 | struct drm_i915_private *dev_priv = crtc->base.dev->dev_private; | |
2038 | enum transcoder cpu_transcoder = crtc->config->cpu_transcoder; | |
2039 | enum pipe pipe = crtc->pipe; | |
2040 | i915_reg_t reg; | |
2041 | u32 val; | |
2042 | ||
2043 | DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe)); | |
2044 | ||
2045 | /* | |
2046 | * Make sure planes won't keep trying to pump pixels to us, | |
2047 | * or we might hang the display. | |
2048 | */ | |
2049 | assert_planes_disabled(dev_priv, pipe); | |
2050 | assert_cursor_disabled(dev_priv, pipe); | |
2051 | assert_sprites_disabled(dev_priv, pipe); | |
2052 | ||
2053 | reg = PIPECONF(cpu_transcoder); | |
2054 | val = I915_READ(reg); | |
2055 | if ((val & PIPECONF_ENABLE) == 0) | |
2056 | return; | |
2057 | ||
2058 | /* | |
2059 | * Double wide has implications for planes | |
2060 | * so best keep it disabled when not needed. | |
2061 | */ | |
2062 | if (crtc->config->double_wide) | |
2063 | val &= ~PIPECONF_DOUBLE_WIDE; | |
2064 | ||
2065 | /* Don't disable pipe or pipe PLLs if needed */ | |
2066 | if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) && | |
2067 | !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)) | |
2068 | val &= ~PIPECONF_ENABLE; | |
2069 | ||
2070 | I915_WRITE(reg, val); | |
2071 | if ((val & PIPECONF_ENABLE) == 0) | |
2072 | intel_wait_for_pipe_off(crtc); | |
2073 | } | |
2074 | ||
2075 | static bool need_vtd_wa(struct drm_device *dev) | |
2076 | { | |
2077 | #ifdef CONFIG_INTEL_IOMMU | |
2078 | if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped) | |
2079 | return true; | |
2080 | #endif | |
2081 | return false; | |
2082 | } | |
2083 | ||
2084 | static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv) | |
2085 | { | |
2086 | return IS_GEN2(dev_priv) ? 2048 : 4096; | |
2087 | } | |
2088 | ||
2089 | static unsigned int intel_tile_width_bytes(const struct drm_i915_private *dev_priv, | |
2090 | uint64_t fb_modifier, unsigned int cpp) | |
2091 | { | |
2092 | switch (fb_modifier) { | |
2093 | case DRM_FORMAT_MOD_NONE: | |
2094 | return cpp; | |
2095 | case I915_FORMAT_MOD_X_TILED: | |
2096 | if (IS_GEN2(dev_priv)) | |
2097 | return 128; | |
2098 | else | |
2099 | return 512; | |
2100 | case I915_FORMAT_MOD_Y_TILED: | |
2101 | if (IS_GEN2(dev_priv) || HAS_128_BYTE_Y_TILING(dev_priv)) | |
2102 | return 128; | |
2103 | else | |
2104 | return 512; | |
2105 | case I915_FORMAT_MOD_Yf_TILED: | |
2106 | switch (cpp) { | |
2107 | case 1: | |
2108 | return 64; | |
2109 | case 2: | |
2110 | case 4: | |
2111 | return 128; | |
2112 | case 8: | |
2113 | case 16: | |
2114 | return 256; | |
2115 | default: | |
2116 | MISSING_CASE(cpp); | |
2117 | return cpp; | |
2118 | } | |
2119 | break; | |
2120 | default: | |
2121 | MISSING_CASE(fb_modifier); | |
2122 | return cpp; | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | unsigned int intel_tile_height(const struct drm_i915_private *dev_priv, | |
2127 | uint64_t fb_modifier, unsigned int cpp) | |
2128 | { | |
2129 | if (fb_modifier == DRM_FORMAT_MOD_NONE) | |
2130 | return 1; | |
2131 | else | |
2132 | return intel_tile_size(dev_priv) / | |
2133 | intel_tile_width_bytes(dev_priv, fb_modifier, cpp); | |
2134 | } | |
2135 | ||
2136 | /* Return the tile dimensions in pixel units */ | |
2137 | static void intel_tile_dims(const struct drm_i915_private *dev_priv, | |
2138 | unsigned int *tile_width, | |
2139 | unsigned int *tile_height, | |
2140 | uint64_t fb_modifier, | |
2141 | unsigned int cpp) | |
2142 | { | |
2143 | unsigned int tile_width_bytes = | |
2144 | intel_tile_width_bytes(dev_priv, fb_modifier, cpp); | |
2145 | ||
2146 | *tile_width = tile_width_bytes / cpp; | |
2147 | *tile_height = intel_tile_size(dev_priv) / tile_width_bytes; | |
2148 | } | |
2149 | ||
2150 | unsigned int | |
2151 | intel_fb_align_height(struct drm_device *dev, unsigned int height, | |
2152 | uint32_t pixel_format, uint64_t fb_modifier) | |
2153 | { | |
2154 | unsigned int cpp = drm_format_plane_cpp(pixel_format, 0); | |
2155 | unsigned int tile_height = intel_tile_height(to_i915(dev), fb_modifier, cpp); | |
2156 | ||
2157 | return ALIGN(height, tile_height); | |
2158 | } | |
2159 | ||
2160 | unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info) | |
2161 | { | |
2162 | unsigned int size = 0; | |
2163 | int i; | |
2164 | ||
2165 | for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++) | |
2166 | size += rot_info->plane[i].width * rot_info->plane[i].height; | |
2167 | ||
2168 | return size; | |
2169 | } | |
2170 | ||
2171 | static void | |
2172 | intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, | |
2173 | const struct drm_framebuffer *fb, | |
2174 | unsigned int rotation) | |
2175 | { | |
2176 | if (intel_rotation_90_or_270(rotation)) { | |
2177 | *view = i915_ggtt_view_rotated; | |
2178 | view->params.rotated = to_intel_framebuffer(fb)->rot_info; | |
2179 | } else { | |
2180 | *view = i915_ggtt_view_normal; | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | static void | |
2185 | intel_fill_fb_info(struct drm_i915_private *dev_priv, | |
2186 | struct drm_framebuffer *fb) | |
2187 | { | |
2188 | struct intel_rotation_info *info = &to_intel_framebuffer(fb)->rot_info; | |
2189 | unsigned int tile_size, tile_width, tile_height, cpp; | |
2190 | ||
2191 | tile_size = intel_tile_size(dev_priv); | |
2192 | ||
2193 | cpp = drm_format_plane_cpp(fb->pixel_format, 0); | |
2194 | intel_tile_dims(dev_priv, &tile_width, &tile_height, | |
2195 | fb->modifier[0], cpp); | |
2196 | ||
2197 | info->plane[0].width = DIV_ROUND_UP(fb->pitches[0], tile_width * cpp); | |
2198 | info->plane[0].height = DIV_ROUND_UP(fb->height, tile_height); | |
2199 | ||
2200 | if (info->pixel_format == DRM_FORMAT_NV12) { | |
2201 | cpp = drm_format_plane_cpp(fb->pixel_format, 1); | |
2202 | intel_tile_dims(dev_priv, &tile_width, &tile_height, | |
2203 | fb->modifier[1], cpp); | |
2204 | ||
2205 | info->uv_offset = fb->offsets[1]; | |
2206 | info->plane[1].width = DIV_ROUND_UP(fb->pitches[1], tile_width * cpp); | |
2207 | info->plane[1].height = DIV_ROUND_UP(fb->height / 2, tile_height); | |
2208 | } | |
2209 | } | |
2210 | ||
2211 | static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv) | |
2212 | { | |
2213 | if (INTEL_INFO(dev_priv)->gen >= 9) | |
2214 | return 256 * 1024; | |
2215 | else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) || | |
2216 | IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
2217 | return 128 * 1024; | |
2218 | else if (INTEL_INFO(dev_priv)->gen >= 4) | |
2219 | return 4 * 1024; | |
2220 | else | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | static unsigned int intel_surf_alignment(const struct drm_i915_private *dev_priv, | |
2225 | uint64_t fb_modifier) | |
2226 | { | |
2227 | switch (fb_modifier) { | |
2228 | case DRM_FORMAT_MOD_NONE: | |
2229 | return intel_linear_alignment(dev_priv); | |
2230 | case I915_FORMAT_MOD_X_TILED: | |
2231 | if (INTEL_INFO(dev_priv)->gen >= 9) | |
2232 | return 256 * 1024; | |
2233 | return 0; | |
2234 | case I915_FORMAT_MOD_Y_TILED: | |
2235 | case I915_FORMAT_MOD_Yf_TILED: | |
2236 | return 1 * 1024 * 1024; | |
2237 | default: | |
2238 | MISSING_CASE(fb_modifier); | |
2239 | return 0; | |
2240 | } | |
2241 | } | |
2242 | ||
2243 | int | |
2244 | intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, | |
2245 | unsigned int rotation) | |
2246 | { | |
2247 | struct drm_device *dev = fb->dev; | |
2248 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2249 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
2250 | struct i915_ggtt_view view; | |
2251 | u32 alignment; | |
2252 | int ret; | |
2253 | ||
2254 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
2255 | ||
2256 | alignment = intel_surf_alignment(dev_priv, fb->modifier[0]); | |
2257 | ||
2258 | intel_fill_fb_ggtt_view(&view, fb, rotation); | |
2259 | ||
2260 | /* Note that the w/a also requires 64 PTE of padding following the | |
2261 | * bo. We currently fill all unused PTE with the shadow page and so | |
2262 | * we should always have valid PTE following the scanout preventing | |
2263 | * the VT-d warning. | |
2264 | */ | |
2265 | if (need_vtd_wa(dev) && alignment < 256 * 1024) | |
2266 | alignment = 256 * 1024; | |
2267 | ||
2268 | /* | |
2269 | * Global gtt pte registers are special registers which actually forward | |
2270 | * writes to a chunk of system memory. Which means that there is no risk | |
2271 | * that the register values disappear as soon as we call | |
2272 | * intel_runtime_pm_put(), so it is correct to wrap only the | |
2273 | * pin/unpin/fence and not more. | |
2274 | */ | |
2275 | intel_runtime_pm_get(dev_priv); | |
2276 | ||
2277 | ret = i915_gem_object_pin_to_display_plane(obj, alignment, | |
2278 | &view); | |
2279 | if (ret) | |
2280 | goto err_pm; | |
2281 | ||
2282 | /* Install a fence for tiled scan-out. Pre-i965 always needs a | |
2283 | * fence, whereas 965+ only requires a fence if using | |
2284 | * framebuffer compression. For simplicity, we always install | |
2285 | * a fence as the cost is not that onerous. | |
2286 | */ | |
2287 | if (view.type == I915_GGTT_VIEW_NORMAL) { | |
2288 | ret = i915_gem_object_get_fence(obj); | |
2289 | if (ret == -EDEADLK) { | |
2290 | /* | |
2291 | * -EDEADLK means there are no free fences | |
2292 | * no pending flips. | |
2293 | * | |
2294 | * This is propagated to atomic, but it uses | |
2295 | * -EDEADLK to force a locking recovery, so | |
2296 | * change the returned error to -EBUSY. | |
2297 | */ | |
2298 | ret = -EBUSY; | |
2299 | goto err_unpin; | |
2300 | } else if (ret) | |
2301 | goto err_unpin; | |
2302 | ||
2303 | i915_gem_object_pin_fence(obj); | |
2304 | } | |
2305 | ||
2306 | intel_runtime_pm_put(dev_priv); | |
2307 | return 0; | |
2308 | ||
2309 | err_unpin: | |
2310 | i915_gem_object_unpin_from_display_plane(obj, &view); | |
2311 | err_pm: | |
2312 | intel_runtime_pm_put(dev_priv); | |
2313 | return ret; | |
2314 | } | |
2315 | ||
2316 | void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation) | |
2317 | { | |
2318 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
2319 | struct i915_ggtt_view view; | |
2320 | ||
2321 | WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex)); | |
2322 | ||
2323 | intel_fill_fb_ggtt_view(&view, fb, rotation); | |
2324 | ||
2325 | if (view.type == I915_GGTT_VIEW_NORMAL) | |
2326 | i915_gem_object_unpin_fence(obj); | |
2327 | ||
2328 | i915_gem_object_unpin_from_display_plane(obj, &view); | |
2329 | } | |
2330 | ||
2331 | /* | |
2332 | * Adjust the tile offset by moving the difference into | |
2333 | * the x/y offsets. | |
2334 | * | |
2335 | * Input tile dimensions and pitch must already be | |
2336 | * rotated to match x and y, and in pixel units. | |
2337 | */ | |
2338 | static u32 intel_adjust_tile_offset(int *x, int *y, | |
2339 | unsigned int tile_width, | |
2340 | unsigned int tile_height, | |
2341 | unsigned int tile_size, | |
2342 | unsigned int pitch_tiles, | |
2343 | u32 old_offset, | |
2344 | u32 new_offset) | |
2345 | { | |
2346 | unsigned int tiles; | |
2347 | ||
2348 | WARN_ON(old_offset & (tile_size - 1)); | |
2349 | WARN_ON(new_offset & (tile_size - 1)); | |
2350 | WARN_ON(new_offset > old_offset); | |
2351 | ||
2352 | tiles = (old_offset - new_offset) / tile_size; | |
2353 | ||
2354 | *y += tiles / pitch_tiles * tile_height; | |
2355 | *x += tiles % pitch_tiles * tile_width; | |
2356 | ||
2357 | return new_offset; | |
2358 | } | |
2359 | ||
2360 | /* | |
2361 | * Computes the linear offset to the base tile and adjusts | |
2362 | * x, y. bytes per pixel is assumed to be a power-of-two. | |
2363 | * | |
2364 | * In the 90/270 rotated case, x and y are assumed | |
2365 | * to be already rotated to match the rotated GTT view, and | |
2366 | * pitch is the tile_height aligned framebuffer height. | |
2367 | */ | |
2368 | u32 intel_compute_tile_offset(int *x, int *y, | |
2369 | const struct drm_framebuffer *fb, int plane, | |
2370 | unsigned int pitch, | |
2371 | unsigned int rotation) | |
2372 | { | |
2373 | const struct drm_i915_private *dev_priv = to_i915(fb->dev); | |
2374 | uint64_t fb_modifier = fb->modifier[plane]; | |
2375 | unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane); | |
2376 | u32 offset, offset_aligned, alignment; | |
2377 | ||
2378 | alignment = intel_surf_alignment(dev_priv, fb_modifier); | |
2379 | if (alignment) | |
2380 | alignment--; | |
2381 | ||
2382 | if (fb_modifier != DRM_FORMAT_MOD_NONE) { | |
2383 | unsigned int tile_size, tile_width, tile_height; | |
2384 | unsigned int tile_rows, tiles, pitch_tiles; | |
2385 | ||
2386 | tile_size = intel_tile_size(dev_priv); | |
2387 | intel_tile_dims(dev_priv, &tile_width, &tile_height, | |
2388 | fb_modifier, cpp); | |
2389 | ||
2390 | if (intel_rotation_90_or_270(rotation)) { | |
2391 | pitch_tiles = pitch / tile_height; | |
2392 | swap(tile_width, tile_height); | |
2393 | } else { | |
2394 | pitch_tiles = pitch / (tile_width * cpp); | |
2395 | } | |
2396 | ||
2397 | tile_rows = *y / tile_height; | |
2398 | *y %= tile_height; | |
2399 | ||
2400 | tiles = *x / tile_width; | |
2401 | *x %= tile_width; | |
2402 | ||
2403 | offset = (tile_rows * pitch_tiles + tiles) * tile_size; | |
2404 | offset_aligned = offset & ~alignment; | |
2405 | ||
2406 | intel_adjust_tile_offset(x, y, tile_width, tile_height, | |
2407 | tile_size, pitch_tiles, | |
2408 | offset, offset_aligned); | |
2409 | } else { | |
2410 | offset = *y * pitch + *x * cpp; | |
2411 | offset_aligned = offset & ~alignment; | |
2412 | ||
2413 | *y = (offset & alignment) / pitch; | |
2414 | *x = ((offset & alignment) - *y * pitch) / cpp; | |
2415 | } | |
2416 | ||
2417 | return offset_aligned; | |
2418 | } | |
2419 | ||
2420 | static int i9xx_format_to_fourcc(int format) | |
2421 | { | |
2422 | switch (format) { | |
2423 | case DISPPLANE_8BPP: | |
2424 | return DRM_FORMAT_C8; | |
2425 | case DISPPLANE_BGRX555: | |
2426 | return DRM_FORMAT_XRGB1555; | |
2427 | case DISPPLANE_BGRX565: | |
2428 | return DRM_FORMAT_RGB565; | |
2429 | default: | |
2430 | case DISPPLANE_BGRX888: | |
2431 | return DRM_FORMAT_XRGB8888; | |
2432 | case DISPPLANE_RGBX888: | |
2433 | return DRM_FORMAT_XBGR8888; | |
2434 | case DISPPLANE_BGRX101010: | |
2435 | return DRM_FORMAT_XRGB2101010; | |
2436 | case DISPPLANE_RGBX101010: | |
2437 | return DRM_FORMAT_XBGR2101010; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha) | |
2442 | { | |
2443 | switch (format) { | |
2444 | case PLANE_CTL_FORMAT_RGB_565: | |
2445 | return DRM_FORMAT_RGB565; | |
2446 | default: | |
2447 | case PLANE_CTL_FORMAT_XRGB_8888: | |
2448 | if (rgb_order) { | |
2449 | if (alpha) | |
2450 | return DRM_FORMAT_ABGR8888; | |
2451 | else | |
2452 | return DRM_FORMAT_XBGR8888; | |
2453 | } else { | |
2454 | if (alpha) | |
2455 | return DRM_FORMAT_ARGB8888; | |
2456 | else | |
2457 | return DRM_FORMAT_XRGB8888; | |
2458 | } | |
2459 | case PLANE_CTL_FORMAT_XRGB_2101010: | |
2460 | if (rgb_order) | |
2461 | return DRM_FORMAT_XBGR2101010; | |
2462 | else | |
2463 | return DRM_FORMAT_XRGB2101010; | |
2464 | } | |
2465 | } | |
2466 | ||
2467 | static bool | |
2468 | intel_alloc_initial_plane_obj(struct intel_crtc *crtc, | |
2469 | struct intel_initial_plane_config *plane_config) | |
2470 | { | |
2471 | struct drm_device *dev = crtc->base.dev; | |
2472 | struct drm_i915_private *dev_priv = to_i915(dev); | |
2473 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
2474 | struct drm_i915_gem_object *obj = NULL; | |
2475 | struct drm_mode_fb_cmd2 mode_cmd = { 0 }; | |
2476 | struct drm_framebuffer *fb = &plane_config->fb->base; | |
2477 | u32 base_aligned = round_down(plane_config->base, PAGE_SIZE); | |
2478 | u32 size_aligned = round_up(plane_config->base + plane_config->size, | |
2479 | PAGE_SIZE); | |
2480 | ||
2481 | size_aligned -= base_aligned; | |
2482 | ||
2483 | if (plane_config->size == 0) | |
2484 | return false; | |
2485 | ||
2486 | /* If the FB is too big, just don't use it since fbdev is not very | |
2487 | * important and we should probably use that space with FBC or other | |
2488 | * features. */ | |
2489 | if (size_aligned * 2 > ggtt->stolen_usable_size) | |
2490 | return false; | |
2491 | ||
2492 | mutex_lock(&dev->struct_mutex); | |
2493 | ||
2494 | obj = i915_gem_object_create_stolen_for_preallocated(dev, | |
2495 | base_aligned, | |
2496 | base_aligned, | |
2497 | size_aligned); | |
2498 | if (!obj) { | |
2499 | mutex_unlock(&dev->struct_mutex); | |
2500 | return false; | |
2501 | } | |
2502 | ||
2503 | obj->tiling_mode = plane_config->tiling; | |
2504 | if (obj->tiling_mode == I915_TILING_X) | |
2505 | obj->stride = fb->pitches[0]; | |
2506 | ||
2507 | mode_cmd.pixel_format = fb->pixel_format; | |
2508 | mode_cmd.width = fb->width; | |
2509 | mode_cmd.height = fb->height; | |
2510 | mode_cmd.pitches[0] = fb->pitches[0]; | |
2511 | mode_cmd.modifier[0] = fb->modifier[0]; | |
2512 | mode_cmd.flags = DRM_MODE_FB_MODIFIERS; | |
2513 | ||
2514 | if (intel_framebuffer_init(dev, to_intel_framebuffer(fb), | |
2515 | &mode_cmd, obj)) { | |
2516 | DRM_DEBUG_KMS("intel fb init failed\n"); | |
2517 | goto out_unref_obj; | |
2518 | } | |
2519 | ||
2520 | mutex_unlock(&dev->struct_mutex); | |
2521 | ||
2522 | DRM_DEBUG_KMS("initial plane fb obj %p\n", obj); | |
2523 | return true; | |
2524 | ||
2525 | out_unref_obj: | |
2526 | drm_gem_object_unreference(&obj->base); | |
2527 | mutex_unlock(&dev->struct_mutex); | |
2528 | return false; | |
2529 | } | |
2530 | ||
2531 | /* Update plane->state->fb to match plane->fb after driver-internal updates */ | |
2532 | static void | |
2533 | update_state_fb(struct drm_plane *plane) | |
2534 | { | |
2535 | if (plane->fb == plane->state->fb) | |
2536 | return; | |
2537 | ||
2538 | if (plane->state->fb) | |
2539 | drm_framebuffer_unreference(plane->state->fb); | |
2540 | plane->state->fb = plane->fb; | |
2541 | if (plane->state->fb) | |
2542 | drm_framebuffer_reference(plane->state->fb); | |
2543 | } | |
2544 | ||
2545 | static void | |
2546 | intel_find_initial_plane_obj(struct intel_crtc *intel_crtc, | |
2547 | struct intel_initial_plane_config *plane_config) | |
2548 | { | |
2549 | struct drm_device *dev = intel_crtc->base.dev; | |
2550 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2551 | struct drm_crtc *c; | |
2552 | struct intel_crtc *i; | |
2553 | struct drm_i915_gem_object *obj; | |
2554 | struct drm_plane *primary = intel_crtc->base.primary; | |
2555 | struct drm_plane_state *plane_state = primary->state; | |
2556 | struct drm_crtc_state *crtc_state = intel_crtc->base.state; | |
2557 | struct intel_plane *intel_plane = to_intel_plane(primary); | |
2558 | struct intel_plane_state *intel_state = | |
2559 | to_intel_plane_state(plane_state); | |
2560 | struct drm_framebuffer *fb; | |
2561 | ||
2562 | if (!plane_config->fb) | |
2563 | return; | |
2564 | ||
2565 | if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) { | |
2566 | fb = &plane_config->fb->base; | |
2567 | goto valid_fb; | |
2568 | } | |
2569 | ||
2570 | kfree(plane_config->fb); | |
2571 | ||
2572 | /* | |
2573 | * Failed to alloc the obj, check to see if we should share | |
2574 | * an fb with another CRTC instead | |
2575 | */ | |
2576 | for_each_crtc(dev, c) { | |
2577 | i = to_intel_crtc(c); | |
2578 | ||
2579 | if (c == &intel_crtc->base) | |
2580 | continue; | |
2581 | ||
2582 | if (!i->active) | |
2583 | continue; | |
2584 | ||
2585 | fb = c->primary->fb; | |
2586 | if (!fb) | |
2587 | continue; | |
2588 | ||
2589 | obj = intel_fb_obj(fb); | |
2590 | if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) { | |
2591 | drm_framebuffer_reference(fb); | |
2592 | goto valid_fb; | |
2593 | } | |
2594 | } | |
2595 | ||
2596 | /* | |
2597 | * We've failed to reconstruct the BIOS FB. Current display state | |
2598 | * indicates that the primary plane is visible, but has a NULL FB, | |
2599 | * which will lead to problems later if we don't fix it up. The | |
2600 | * simplest solution is to just disable the primary plane now and | |
2601 | * pretend the BIOS never had it enabled. | |
2602 | */ | |
2603 | to_intel_plane_state(plane_state)->visible = false; | |
2604 | crtc_state->plane_mask &= ~(1 << drm_plane_index(primary)); | |
2605 | intel_pre_disable_primary_noatomic(&intel_crtc->base); | |
2606 | intel_plane->disable_plane(primary, &intel_crtc->base); | |
2607 | ||
2608 | return; | |
2609 | ||
2610 | valid_fb: | |
2611 | plane_state->src_x = 0; | |
2612 | plane_state->src_y = 0; | |
2613 | plane_state->src_w = fb->width << 16; | |
2614 | plane_state->src_h = fb->height << 16; | |
2615 | ||
2616 | plane_state->crtc_x = 0; | |
2617 | plane_state->crtc_y = 0; | |
2618 | plane_state->crtc_w = fb->width; | |
2619 | plane_state->crtc_h = fb->height; | |
2620 | ||
2621 | intel_state->src.x1 = plane_state->src_x; | |
2622 | intel_state->src.y1 = plane_state->src_y; | |
2623 | intel_state->src.x2 = plane_state->src_x + plane_state->src_w; | |
2624 | intel_state->src.y2 = plane_state->src_y + plane_state->src_h; | |
2625 | intel_state->dst.x1 = plane_state->crtc_x; | |
2626 | intel_state->dst.y1 = plane_state->crtc_y; | |
2627 | intel_state->dst.x2 = plane_state->crtc_x + plane_state->crtc_w; | |
2628 | intel_state->dst.y2 = plane_state->crtc_y + plane_state->crtc_h; | |
2629 | ||
2630 | obj = intel_fb_obj(fb); | |
2631 | if (obj->tiling_mode != I915_TILING_NONE) | |
2632 | dev_priv->preserve_bios_swizzle = true; | |
2633 | ||
2634 | drm_framebuffer_reference(fb); | |
2635 | primary->fb = primary->state->fb = fb; | |
2636 | primary->crtc = primary->state->crtc = &intel_crtc->base; | |
2637 | intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary)); | |
2638 | obj->frontbuffer_bits |= to_intel_plane(primary)->frontbuffer_bit; | |
2639 | } | |
2640 | ||
2641 | static void i9xx_update_primary_plane(struct drm_plane *primary, | |
2642 | const struct intel_crtc_state *crtc_state, | |
2643 | const struct intel_plane_state *plane_state) | |
2644 | { | |
2645 | struct drm_device *dev = primary->dev; | |
2646 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2647 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc); | |
2648 | struct drm_framebuffer *fb = plane_state->base.fb; | |
2649 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
2650 | int plane = intel_crtc->plane; | |
2651 | u32 linear_offset; | |
2652 | u32 dspcntr; | |
2653 | i915_reg_t reg = DSPCNTR(plane); | |
2654 | unsigned int rotation = plane_state->base.rotation; | |
2655 | int cpp = drm_format_plane_cpp(fb->pixel_format, 0); | |
2656 | int x = plane_state->src.x1 >> 16; | |
2657 | int y = plane_state->src.y1 >> 16; | |
2658 | ||
2659 | dspcntr = DISPPLANE_GAMMA_ENABLE; | |
2660 | ||
2661 | dspcntr |= DISPLAY_PLANE_ENABLE; | |
2662 | ||
2663 | if (INTEL_INFO(dev)->gen < 4) { | |
2664 | if (intel_crtc->pipe == PIPE_B) | |
2665 | dspcntr |= DISPPLANE_SEL_PIPE_B; | |
2666 | ||
2667 | /* pipesrc and dspsize control the size that is scaled from, | |
2668 | * which should always be the user's requested size. | |
2669 | */ | |
2670 | I915_WRITE(DSPSIZE(plane), | |
2671 | ((crtc_state->pipe_src_h - 1) << 16) | | |
2672 | (crtc_state->pipe_src_w - 1)); | |
2673 | I915_WRITE(DSPPOS(plane), 0); | |
2674 | } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) { | |
2675 | I915_WRITE(PRIMSIZE(plane), | |
2676 | ((crtc_state->pipe_src_h - 1) << 16) | | |
2677 | (crtc_state->pipe_src_w - 1)); | |
2678 | I915_WRITE(PRIMPOS(plane), 0); | |
2679 | I915_WRITE(PRIMCNSTALPHA(plane), 0); | |
2680 | } | |
2681 | ||
2682 | switch (fb->pixel_format) { | |
2683 | case DRM_FORMAT_C8: | |
2684 | dspcntr |= DISPPLANE_8BPP; | |
2685 | break; | |
2686 | case DRM_FORMAT_XRGB1555: | |
2687 | dspcntr |= DISPPLANE_BGRX555; | |
2688 | break; | |
2689 | case DRM_FORMAT_RGB565: | |
2690 | dspcntr |= DISPPLANE_BGRX565; | |
2691 | break; | |
2692 | case DRM_FORMAT_XRGB8888: | |
2693 | dspcntr |= DISPPLANE_BGRX888; | |
2694 | break; | |
2695 | case DRM_FORMAT_XBGR8888: | |
2696 | dspcntr |= DISPPLANE_RGBX888; | |
2697 | break; | |
2698 | case DRM_FORMAT_XRGB2101010: | |
2699 | dspcntr |= DISPPLANE_BGRX101010; | |
2700 | break; | |
2701 | case DRM_FORMAT_XBGR2101010: | |
2702 | dspcntr |= DISPPLANE_RGBX101010; | |
2703 | break; | |
2704 | default: | |
2705 | BUG(); | |
2706 | } | |
2707 | ||
2708 | if (INTEL_INFO(dev)->gen >= 4 && | |
2709 | obj->tiling_mode != I915_TILING_NONE) | |
2710 | dspcntr |= DISPPLANE_TILED; | |
2711 | ||
2712 | if (IS_G4X(dev)) | |
2713 | dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE; | |
2714 | ||
2715 | linear_offset = y * fb->pitches[0] + x * cpp; | |
2716 | ||
2717 | if (INTEL_INFO(dev)->gen >= 4) { | |
2718 | intel_crtc->dspaddr_offset = | |
2719 | intel_compute_tile_offset(&x, &y, fb, 0, | |
2720 | fb->pitches[0], rotation); | |
2721 | linear_offset -= intel_crtc->dspaddr_offset; | |
2722 | } else { | |
2723 | intel_crtc->dspaddr_offset = linear_offset; | |
2724 | } | |
2725 | ||
2726 | if (rotation == BIT(DRM_ROTATE_180)) { | |
2727 | dspcntr |= DISPPLANE_ROTATE_180; | |
2728 | ||
2729 | x += (crtc_state->pipe_src_w - 1); | |
2730 | y += (crtc_state->pipe_src_h - 1); | |
2731 | ||
2732 | /* Finding the last pixel of the last line of the display | |
2733 | data and adding to linear_offset*/ | |
2734 | linear_offset += | |
2735 | (crtc_state->pipe_src_h - 1) * fb->pitches[0] + | |
2736 | (crtc_state->pipe_src_w - 1) * cpp; | |
2737 | } | |
2738 | ||
2739 | intel_crtc->adjusted_x = x; | |
2740 | intel_crtc->adjusted_y = y; | |
2741 | ||
2742 | I915_WRITE(reg, dspcntr); | |
2743 | ||
2744 | I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]); | |
2745 | if (INTEL_INFO(dev)->gen >= 4) { | |
2746 | I915_WRITE(DSPSURF(plane), | |
2747 | i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset); | |
2748 | I915_WRITE(DSPTILEOFF(plane), (y << 16) | x); | |
2749 | I915_WRITE(DSPLINOFF(plane), linear_offset); | |
2750 | } else | |
2751 | I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset); | |
2752 | POSTING_READ(reg); | |
2753 | } | |
2754 | ||
2755 | static void i9xx_disable_primary_plane(struct drm_plane *primary, | |
2756 | struct drm_crtc *crtc) | |
2757 | { | |
2758 | struct drm_device *dev = crtc->dev; | |
2759 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2760 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2761 | int plane = intel_crtc->plane; | |
2762 | ||
2763 | I915_WRITE(DSPCNTR(plane), 0); | |
2764 | if (INTEL_INFO(dev_priv)->gen >= 4) | |
2765 | I915_WRITE(DSPSURF(plane), 0); | |
2766 | else | |
2767 | I915_WRITE(DSPADDR(plane), 0); | |
2768 | POSTING_READ(DSPCNTR(plane)); | |
2769 | } | |
2770 | ||
2771 | static void ironlake_update_primary_plane(struct drm_plane *primary, | |
2772 | const struct intel_crtc_state *crtc_state, | |
2773 | const struct intel_plane_state *plane_state) | |
2774 | { | |
2775 | struct drm_device *dev = primary->dev; | |
2776 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2777 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc); | |
2778 | struct drm_framebuffer *fb = plane_state->base.fb; | |
2779 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
2780 | int plane = intel_crtc->plane; | |
2781 | u32 linear_offset; | |
2782 | u32 dspcntr; | |
2783 | i915_reg_t reg = DSPCNTR(plane); | |
2784 | unsigned int rotation = plane_state->base.rotation; | |
2785 | int cpp = drm_format_plane_cpp(fb->pixel_format, 0); | |
2786 | int x = plane_state->src.x1 >> 16; | |
2787 | int y = plane_state->src.y1 >> 16; | |
2788 | ||
2789 | dspcntr = DISPPLANE_GAMMA_ENABLE; | |
2790 | dspcntr |= DISPLAY_PLANE_ENABLE; | |
2791 | ||
2792 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
2793 | dspcntr |= DISPPLANE_PIPE_CSC_ENABLE; | |
2794 | ||
2795 | switch (fb->pixel_format) { | |
2796 | case DRM_FORMAT_C8: | |
2797 | dspcntr |= DISPPLANE_8BPP; | |
2798 | break; | |
2799 | case DRM_FORMAT_RGB565: | |
2800 | dspcntr |= DISPPLANE_BGRX565; | |
2801 | break; | |
2802 | case DRM_FORMAT_XRGB8888: | |
2803 | dspcntr |= DISPPLANE_BGRX888; | |
2804 | break; | |
2805 | case DRM_FORMAT_XBGR8888: | |
2806 | dspcntr |= DISPPLANE_RGBX888; | |
2807 | break; | |
2808 | case DRM_FORMAT_XRGB2101010: | |
2809 | dspcntr |= DISPPLANE_BGRX101010; | |
2810 | break; | |
2811 | case DRM_FORMAT_XBGR2101010: | |
2812 | dspcntr |= DISPPLANE_RGBX101010; | |
2813 | break; | |
2814 | default: | |
2815 | BUG(); | |
2816 | } | |
2817 | ||
2818 | if (obj->tiling_mode != I915_TILING_NONE) | |
2819 | dspcntr |= DISPPLANE_TILED; | |
2820 | ||
2821 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) | |
2822 | dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE; | |
2823 | ||
2824 | linear_offset = y * fb->pitches[0] + x * cpp; | |
2825 | intel_crtc->dspaddr_offset = | |
2826 | intel_compute_tile_offset(&x, &y, fb, 0, | |
2827 | fb->pitches[0], rotation); | |
2828 | linear_offset -= intel_crtc->dspaddr_offset; | |
2829 | if (rotation == BIT(DRM_ROTATE_180)) { | |
2830 | dspcntr |= DISPPLANE_ROTATE_180; | |
2831 | ||
2832 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) { | |
2833 | x += (crtc_state->pipe_src_w - 1); | |
2834 | y += (crtc_state->pipe_src_h - 1); | |
2835 | ||
2836 | /* Finding the last pixel of the last line of the display | |
2837 | data and adding to linear_offset*/ | |
2838 | linear_offset += | |
2839 | (crtc_state->pipe_src_h - 1) * fb->pitches[0] + | |
2840 | (crtc_state->pipe_src_w - 1) * cpp; | |
2841 | } | |
2842 | } | |
2843 | ||
2844 | intel_crtc->adjusted_x = x; | |
2845 | intel_crtc->adjusted_y = y; | |
2846 | ||
2847 | I915_WRITE(reg, dspcntr); | |
2848 | ||
2849 | I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]); | |
2850 | I915_WRITE(DSPSURF(plane), | |
2851 | i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset); | |
2852 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
2853 | I915_WRITE(DSPOFFSET(plane), (y << 16) | x); | |
2854 | } else { | |
2855 | I915_WRITE(DSPTILEOFF(plane), (y << 16) | x); | |
2856 | I915_WRITE(DSPLINOFF(plane), linear_offset); | |
2857 | } | |
2858 | POSTING_READ(reg); | |
2859 | } | |
2860 | ||
2861 | u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv, | |
2862 | uint64_t fb_modifier, uint32_t pixel_format) | |
2863 | { | |
2864 | if (fb_modifier == DRM_FORMAT_MOD_NONE) { | |
2865 | return 64; | |
2866 | } else { | |
2867 | int cpp = drm_format_plane_cpp(pixel_format, 0); | |
2868 | ||
2869 | return intel_tile_width_bytes(dev_priv, fb_modifier, cpp); | |
2870 | } | |
2871 | } | |
2872 | ||
2873 | u32 intel_plane_obj_offset(struct intel_plane *intel_plane, | |
2874 | struct drm_i915_gem_object *obj, | |
2875 | unsigned int plane) | |
2876 | { | |
2877 | struct i915_ggtt_view view; | |
2878 | struct i915_vma *vma; | |
2879 | u64 offset; | |
2880 | ||
2881 | intel_fill_fb_ggtt_view(&view, intel_plane->base.state->fb, | |
2882 | intel_plane->base.state->rotation); | |
2883 | ||
2884 | vma = i915_gem_obj_to_ggtt_view(obj, &view); | |
2885 | if (WARN(!vma, "ggtt vma for display object not found! (view=%u)\n", | |
2886 | view.type)) | |
2887 | return -1; | |
2888 | ||
2889 | offset = vma->node.start; | |
2890 | ||
2891 | if (plane == 1) { | |
2892 | offset += vma->ggtt_view.params.rotated.uv_start_page * | |
2893 | PAGE_SIZE; | |
2894 | } | |
2895 | ||
2896 | WARN_ON(upper_32_bits(offset)); | |
2897 | ||
2898 | return lower_32_bits(offset); | |
2899 | } | |
2900 | ||
2901 | static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id) | |
2902 | { | |
2903 | struct drm_device *dev = intel_crtc->base.dev; | |
2904 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2905 | ||
2906 | I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0); | |
2907 | I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0); | |
2908 | I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0); | |
2909 | } | |
2910 | ||
2911 | /* | |
2912 | * This function detaches (aka. unbinds) unused scalers in hardware | |
2913 | */ | |
2914 | static void skl_detach_scalers(struct intel_crtc *intel_crtc) | |
2915 | { | |
2916 | struct intel_crtc_scaler_state *scaler_state; | |
2917 | int i; | |
2918 | ||
2919 | scaler_state = &intel_crtc->config->scaler_state; | |
2920 | ||
2921 | /* loop through and disable scalers that aren't in use */ | |
2922 | for (i = 0; i < intel_crtc->num_scalers; i++) { | |
2923 | if (!scaler_state->scalers[i].in_use) | |
2924 | skl_detach_scaler(intel_crtc, i); | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | u32 skl_plane_ctl_format(uint32_t pixel_format) | |
2929 | { | |
2930 | switch (pixel_format) { | |
2931 | case DRM_FORMAT_C8: | |
2932 | return PLANE_CTL_FORMAT_INDEXED; | |
2933 | case DRM_FORMAT_RGB565: | |
2934 | return PLANE_CTL_FORMAT_RGB_565; | |
2935 | case DRM_FORMAT_XBGR8888: | |
2936 | return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX; | |
2937 | case DRM_FORMAT_XRGB8888: | |
2938 | return PLANE_CTL_FORMAT_XRGB_8888; | |
2939 | /* | |
2940 | * XXX: For ARBG/ABGR formats we default to expecting scanout buffers | |
2941 | * to be already pre-multiplied. We need to add a knob (or a different | |
2942 | * DRM_FORMAT) for user-space to configure that. | |
2943 | */ | |
2944 | case DRM_FORMAT_ABGR8888: | |
2945 | return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX | | |
2946 | PLANE_CTL_ALPHA_SW_PREMULTIPLY; | |
2947 | case DRM_FORMAT_ARGB8888: | |
2948 | return PLANE_CTL_FORMAT_XRGB_8888 | | |
2949 | PLANE_CTL_ALPHA_SW_PREMULTIPLY; | |
2950 | case DRM_FORMAT_XRGB2101010: | |
2951 | return PLANE_CTL_FORMAT_XRGB_2101010; | |
2952 | case DRM_FORMAT_XBGR2101010: | |
2953 | return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010; | |
2954 | case DRM_FORMAT_YUYV: | |
2955 | return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV; | |
2956 | case DRM_FORMAT_YVYU: | |
2957 | return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU; | |
2958 | case DRM_FORMAT_UYVY: | |
2959 | return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY; | |
2960 | case DRM_FORMAT_VYUY: | |
2961 | return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY; | |
2962 | default: | |
2963 | MISSING_CASE(pixel_format); | |
2964 | } | |
2965 | ||
2966 | return 0; | |
2967 | } | |
2968 | ||
2969 | u32 skl_plane_ctl_tiling(uint64_t fb_modifier) | |
2970 | { | |
2971 | switch (fb_modifier) { | |
2972 | case DRM_FORMAT_MOD_NONE: | |
2973 | break; | |
2974 | case I915_FORMAT_MOD_X_TILED: | |
2975 | return PLANE_CTL_TILED_X; | |
2976 | case I915_FORMAT_MOD_Y_TILED: | |
2977 | return PLANE_CTL_TILED_Y; | |
2978 | case I915_FORMAT_MOD_Yf_TILED: | |
2979 | return PLANE_CTL_TILED_YF; | |
2980 | default: | |
2981 | MISSING_CASE(fb_modifier); | |
2982 | } | |
2983 | ||
2984 | return 0; | |
2985 | } | |
2986 | ||
2987 | u32 skl_plane_ctl_rotation(unsigned int rotation) | |
2988 | { | |
2989 | switch (rotation) { | |
2990 | case BIT(DRM_ROTATE_0): | |
2991 | break; | |
2992 | /* | |
2993 | * DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr | |
2994 | * while i915 HW rotation is clockwise, thats why this swapping. | |
2995 | */ | |
2996 | case BIT(DRM_ROTATE_90): | |
2997 | return PLANE_CTL_ROTATE_270; | |
2998 | case BIT(DRM_ROTATE_180): | |
2999 | return PLANE_CTL_ROTATE_180; | |
3000 | case BIT(DRM_ROTATE_270): | |
3001 | return PLANE_CTL_ROTATE_90; | |
3002 | default: | |
3003 | MISSING_CASE(rotation); | |
3004 | } | |
3005 | ||
3006 | return 0; | |
3007 | } | |
3008 | ||
3009 | static void skylake_update_primary_plane(struct drm_plane *plane, | |
3010 | const struct intel_crtc_state *crtc_state, | |
3011 | const struct intel_plane_state *plane_state) | |
3012 | { | |
3013 | struct drm_device *dev = plane->dev; | |
3014 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3015 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc); | |
3016 | struct drm_framebuffer *fb = plane_state->base.fb; | |
3017 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
3018 | int pipe = intel_crtc->pipe; | |
3019 | u32 plane_ctl, stride_div, stride; | |
3020 | u32 tile_height, plane_offset, plane_size; | |
3021 | unsigned int rotation = plane_state->base.rotation; | |
3022 | int x_offset, y_offset; | |
3023 | u32 surf_addr; | |
3024 | int scaler_id = plane_state->scaler_id; | |
3025 | int src_x = plane_state->src.x1 >> 16; | |
3026 | int src_y = plane_state->src.y1 >> 16; | |
3027 | int src_w = drm_rect_width(&plane_state->src) >> 16; | |
3028 | int src_h = drm_rect_height(&plane_state->src) >> 16; | |
3029 | int dst_x = plane_state->dst.x1; | |
3030 | int dst_y = plane_state->dst.y1; | |
3031 | int dst_w = drm_rect_width(&plane_state->dst); | |
3032 | int dst_h = drm_rect_height(&plane_state->dst); | |
3033 | ||
3034 | plane_ctl = PLANE_CTL_ENABLE | | |
3035 | PLANE_CTL_PIPE_GAMMA_ENABLE | | |
3036 | PLANE_CTL_PIPE_CSC_ENABLE; | |
3037 | ||
3038 | plane_ctl |= skl_plane_ctl_format(fb->pixel_format); | |
3039 | plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]); | |
3040 | plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE; | |
3041 | plane_ctl |= skl_plane_ctl_rotation(rotation); | |
3042 | ||
3043 | stride_div = intel_fb_stride_alignment(dev_priv, fb->modifier[0], | |
3044 | fb->pixel_format); | |
3045 | surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj, 0); | |
3046 | ||
3047 | WARN_ON(drm_rect_width(&plane_state->src) == 0); | |
3048 | ||
3049 | if (intel_rotation_90_or_270(rotation)) { | |
3050 | int cpp = drm_format_plane_cpp(fb->pixel_format, 0); | |
3051 | ||
3052 | /* stride = Surface height in tiles */ | |
3053 | tile_height = intel_tile_height(dev_priv, fb->modifier[0], cpp); | |
3054 | stride = DIV_ROUND_UP(fb->height, tile_height); | |
3055 | x_offset = stride * tile_height - src_y - src_h; | |
3056 | y_offset = src_x; | |
3057 | plane_size = (src_w - 1) << 16 | (src_h - 1); | |
3058 | } else { | |
3059 | stride = fb->pitches[0] / stride_div; | |
3060 | x_offset = src_x; | |
3061 | y_offset = src_y; | |
3062 | plane_size = (src_h - 1) << 16 | (src_w - 1); | |
3063 | } | |
3064 | plane_offset = y_offset << 16 | x_offset; | |
3065 | ||
3066 | intel_crtc->adjusted_x = x_offset; | |
3067 | intel_crtc->adjusted_y = y_offset; | |
3068 | ||
3069 | I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl); | |
3070 | I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset); | |
3071 | I915_WRITE(PLANE_SIZE(pipe, 0), plane_size); | |
3072 | I915_WRITE(PLANE_STRIDE(pipe, 0), stride); | |
3073 | ||
3074 | if (scaler_id >= 0) { | |
3075 | uint32_t ps_ctrl = 0; | |
3076 | ||
3077 | WARN_ON(!dst_w || !dst_h); | |
3078 | ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) | | |
3079 | crtc_state->scaler_state.scalers[scaler_id].mode; | |
3080 | I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl); | |
3081 | I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0); | |
3082 | I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y); | |
3083 | I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h); | |
3084 | I915_WRITE(PLANE_POS(pipe, 0), 0); | |
3085 | } else { | |
3086 | I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x); | |
3087 | } | |
3088 | ||
3089 | I915_WRITE(PLANE_SURF(pipe, 0), surf_addr); | |
3090 | ||
3091 | POSTING_READ(PLANE_SURF(pipe, 0)); | |
3092 | } | |
3093 | ||
3094 | static void skylake_disable_primary_plane(struct drm_plane *primary, | |
3095 | struct drm_crtc *crtc) | |
3096 | { | |
3097 | struct drm_device *dev = crtc->dev; | |
3098 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3099 | int pipe = to_intel_crtc(crtc)->pipe; | |
3100 | ||
3101 | I915_WRITE(PLANE_CTL(pipe, 0), 0); | |
3102 | I915_WRITE(PLANE_SURF(pipe, 0), 0); | |
3103 | POSTING_READ(PLANE_SURF(pipe, 0)); | |
3104 | } | |
3105 | ||
3106 | /* Assume fb object is pinned & idle & fenced and just update base pointers */ | |
3107 | static int | |
3108 | intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb, | |
3109 | int x, int y, enum mode_set_atomic state) | |
3110 | { | |
3111 | /* Support for kgdboc is disabled, this needs a major rework. */ | |
3112 | DRM_ERROR("legacy panic handler not supported any more.\n"); | |
3113 | ||
3114 | return -ENODEV; | |
3115 | } | |
3116 | ||
3117 | static void intel_complete_page_flips(struct drm_i915_private *dev_priv) | |
3118 | { | |
3119 | struct intel_crtc *crtc; | |
3120 | ||
3121 | for_each_intel_crtc(dev_priv->dev, crtc) | |
3122 | intel_finish_page_flip_cs(dev_priv, crtc->pipe); | |
3123 | } | |
3124 | ||
3125 | static void intel_update_primary_planes(struct drm_device *dev) | |
3126 | { | |
3127 | struct drm_crtc *crtc; | |
3128 | ||
3129 | for_each_crtc(dev, crtc) { | |
3130 | struct intel_plane *plane = to_intel_plane(crtc->primary); | |
3131 | struct intel_plane_state *plane_state; | |
3132 | ||
3133 | drm_modeset_lock_crtc(crtc, &plane->base); | |
3134 | plane_state = to_intel_plane_state(plane->base.state); | |
3135 | ||
3136 | if (plane_state->visible) | |
3137 | plane->update_plane(&plane->base, | |
3138 | to_intel_crtc_state(crtc->state), | |
3139 | plane_state); | |
3140 | ||
3141 | drm_modeset_unlock_crtc(crtc); | |
3142 | } | |
3143 | } | |
3144 | ||
3145 | void intel_prepare_reset(struct drm_i915_private *dev_priv) | |
3146 | { | |
3147 | /* no reset support for gen2 */ | |
3148 | if (IS_GEN2(dev_priv)) | |
3149 | return; | |
3150 | ||
3151 | /* reset doesn't touch the display */ | |
3152 | if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv)) | |
3153 | return; | |
3154 | ||
3155 | drm_modeset_lock_all(dev_priv->dev); | |
3156 | /* | |
3157 | * Disabling the crtcs gracefully seems nicer. Also the | |
3158 | * g33 docs say we should at least disable all the planes. | |
3159 | */ | |
3160 | intel_display_suspend(dev_priv->dev); | |
3161 | } | |
3162 | ||
3163 | void intel_finish_reset(struct drm_i915_private *dev_priv) | |
3164 | { | |
3165 | /* | |
3166 | * Flips in the rings will be nuked by the reset, | |
3167 | * so complete all pending flips so that user space | |
3168 | * will get its events and not get stuck. | |
3169 | */ | |
3170 | intel_complete_page_flips(dev_priv); | |
3171 | ||
3172 | /* no reset support for gen2 */ | |
3173 | if (IS_GEN2(dev_priv)) | |
3174 | return; | |
3175 | ||
3176 | /* reset doesn't touch the display */ | |
3177 | if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv)) { | |
3178 | /* | |
3179 | * Flips in the rings have been nuked by the reset, | |
3180 | * so update the base address of all primary | |
3181 | * planes to the the last fb to make sure we're | |
3182 | * showing the correct fb after a reset. | |
3183 | * | |
3184 | * FIXME: Atomic will make this obsolete since we won't schedule | |
3185 | * CS-based flips (which might get lost in gpu resets) any more. | |
3186 | */ | |
3187 | intel_update_primary_planes(dev_priv->dev); | |
3188 | return; | |
3189 | } | |
3190 | ||
3191 | /* | |
3192 | * The display has been reset as well, | |
3193 | * so need a full re-initialization. | |
3194 | */ | |
3195 | intel_runtime_pm_disable_interrupts(dev_priv); | |
3196 | intel_runtime_pm_enable_interrupts(dev_priv); | |
3197 | ||
3198 | intel_modeset_init_hw(dev_priv->dev); | |
3199 | ||
3200 | spin_lock_irq(&dev_priv->irq_lock); | |
3201 | if (dev_priv->display.hpd_irq_setup) | |
3202 | dev_priv->display.hpd_irq_setup(dev_priv); | |
3203 | spin_unlock_irq(&dev_priv->irq_lock); | |
3204 | ||
3205 | intel_display_resume(dev_priv->dev); | |
3206 | ||
3207 | intel_hpd_init(dev_priv); | |
3208 | ||
3209 | drm_modeset_unlock_all(dev_priv->dev); | |
3210 | } | |
3211 | ||
3212 | static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc) | |
3213 | { | |
3214 | struct drm_device *dev = crtc->dev; | |
3215 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3216 | unsigned reset_counter; | |
3217 | bool pending; | |
3218 | ||
3219 | reset_counter = i915_reset_counter(&to_i915(dev)->gpu_error); | |
3220 | if (intel_crtc->reset_counter != reset_counter) | |
3221 | return false; | |
3222 | ||
3223 | spin_lock_irq(&dev->event_lock); | |
3224 | pending = to_intel_crtc(crtc)->flip_work != NULL; | |
3225 | spin_unlock_irq(&dev->event_lock); | |
3226 | ||
3227 | return pending; | |
3228 | } | |
3229 | ||
3230 | static void intel_update_pipe_config(struct intel_crtc *crtc, | |
3231 | struct intel_crtc_state *old_crtc_state) | |
3232 | { | |
3233 | struct drm_device *dev = crtc->base.dev; | |
3234 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3235 | struct intel_crtc_state *pipe_config = | |
3236 | to_intel_crtc_state(crtc->base.state); | |
3237 | ||
3238 | /* drm_atomic_helper_update_legacy_modeset_state might not be called. */ | |
3239 | crtc->base.mode = crtc->base.state->mode; | |
3240 | ||
3241 | DRM_DEBUG_KMS("Updating pipe size %ix%i -> %ix%i\n", | |
3242 | old_crtc_state->pipe_src_w, old_crtc_state->pipe_src_h, | |
3243 | pipe_config->pipe_src_w, pipe_config->pipe_src_h); | |
3244 | ||
3245 | /* | |
3246 | * Update pipe size and adjust fitter if needed: the reason for this is | |
3247 | * that in compute_mode_changes we check the native mode (not the pfit | |
3248 | * mode) to see if we can flip rather than do a full mode set. In the | |
3249 | * fastboot case, we'll flip, but if we don't update the pipesrc and | |
3250 | * pfit state, we'll end up with a big fb scanned out into the wrong | |
3251 | * sized surface. | |
3252 | */ | |
3253 | ||
3254 | I915_WRITE(PIPESRC(crtc->pipe), | |
3255 | ((pipe_config->pipe_src_w - 1) << 16) | | |
3256 | (pipe_config->pipe_src_h - 1)); | |
3257 | ||
3258 | /* on skylake this is done by detaching scalers */ | |
3259 | if (INTEL_INFO(dev)->gen >= 9) { | |
3260 | skl_detach_scalers(crtc); | |
3261 | ||
3262 | if (pipe_config->pch_pfit.enabled) | |
3263 | skylake_pfit_enable(crtc); | |
3264 | } else if (HAS_PCH_SPLIT(dev)) { | |
3265 | if (pipe_config->pch_pfit.enabled) | |
3266 | ironlake_pfit_enable(crtc); | |
3267 | else if (old_crtc_state->pch_pfit.enabled) | |
3268 | ironlake_pfit_disable(crtc, true); | |
3269 | } | |
3270 | } | |
3271 | ||
3272 | static void intel_fdi_normal_train(struct drm_crtc *crtc) | |
3273 | { | |
3274 | struct drm_device *dev = crtc->dev; | |
3275 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3276 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3277 | int pipe = intel_crtc->pipe; | |
3278 | i915_reg_t reg; | |
3279 | u32 temp; | |
3280 | ||
3281 | /* enable normal train */ | |
3282 | reg = FDI_TX_CTL(pipe); | |
3283 | temp = I915_READ(reg); | |
3284 | if (IS_IVYBRIDGE(dev)) { | |
3285 | temp &= ~FDI_LINK_TRAIN_NONE_IVB; | |
3286 | temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE; | |
3287 | } else { | |
3288 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3289 | temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE; | |
3290 | } | |
3291 | I915_WRITE(reg, temp); | |
3292 | ||
3293 | reg = FDI_RX_CTL(pipe); | |
3294 | temp = I915_READ(reg); | |
3295 | if (HAS_PCH_CPT(dev)) { | |
3296 | temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT; | |
3297 | temp |= FDI_LINK_TRAIN_NORMAL_CPT; | |
3298 | } else { | |
3299 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3300 | temp |= FDI_LINK_TRAIN_NONE; | |
3301 | } | |
3302 | I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE); | |
3303 | ||
3304 | /* wait one idle pattern time */ | |
3305 | POSTING_READ(reg); | |
3306 | udelay(1000); | |
3307 | ||
3308 | /* IVB wants error correction enabled */ | |
3309 | if (IS_IVYBRIDGE(dev)) | |
3310 | I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE | | |
3311 | FDI_FE_ERRC_ENABLE); | |
3312 | } | |
3313 | ||
3314 | /* The FDI link training functions for ILK/Ibexpeak. */ | |
3315 | static void ironlake_fdi_link_train(struct drm_crtc *crtc) | |
3316 | { | |
3317 | struct drm_device *dev = crtc->dev; | |
3318 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3319 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3320 | int pipe = intel_crtc->pipe; | |
3321 | i915_reg_t reg; | |
3322 | u32 temp, tries; | |
3323 | ||
3324 | /* FDI needs bits from pipe first */ | |
3325 | assert_pipe_enabled(dev_priv, pipe); | |
3326 | ||
3327 | /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit | |
3328 | for train result */ | |
3329 | reg = FDI_RX_IMR(pipe); | |
3330 | temp = I915_READ(reg); | |
3331 | temp &= ~FDI_RX_SYMBOL_LOCK; | |
3332 | temp &= ~FDI_RX_BIT_LOCK; | |
3333 | I915_WRITE(reg, temp); | |
3334 | I915_READ(reg); | |
3335 | udelay(150); | |
3336 | ||
3337 | /* enable CPU FDI TX and PCH FDI RX */ | |
3338 | reg = FDI_TX_CTL(pipe); | |
3339 | temp = I915_READ(reg); | |
3340 | temp &= ~FDI_DP_PORT_WIDTH_MASK; | |
3341 | temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes); | |
3342 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3343 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
3344 | I915_WRITE(reg, temp | FDI_TX_ENABLE); | |
3345 | ||
3346 | reg = FDI_RX_CTL(pipe); | |
3347 | temp = I915_READ(reg); | |
3348 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3349 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
3350 | I915_WRITE(reg, temp | FDI_RX_ENABLE); | |
3351 | ||
3352 | POSTING_READ(reg); | |
3353 | udelay(150); | |
3354 | ||
3355 | /* Ironlake workaround, enable clock pointer after FDI enable*/ | |
3356 | I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR); | |
3357 | I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR | | |
3358 | FDI_RX_PHASE_SYNC_POINTER_EN); | |
3359 | ||
3360 | reg = FDI_RX_IIR(pipe); | |
3361 | for (tries = 0; tries < 5; tries++) { | |
3362 | temp = I915_READ(reg); | |
3363 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); | |
3364 | ||
3365 | if ((temp & FDI_RX_BIT_LOCK)) { | |
3366 | DRM_DEBUG_KMS("FDI train 1 done.\n"); | |
3367 | I915_WRITE(reg, temp | FDI_RX_BIT_LOCK); | |
3368 | break; | |
3369 | } | |
3370 | } | |
3371 | if (tries == 5) | |
3372 | DRM_ERROR("FDI train 1 fail!\n"); | |
3373 | ||
3374 | /* Train 2 */ | |
3375 | reg = FDI_TX_CTL(pipe); | |
3376 | temp = I915_READ(reg); | |
3377 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3378 | temp |= FDI_LINK_TRAIN_PATTERN_2; | |
3379 | I915_WRITE(reg, temp); | |
3380 | ||
3381 | reg = FDI_RX_CTL(pipe); | |
3382 | temp = I915_READ(reg); | |
3383 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3384 | temp |= FDI_LINK_TRAIN_PATTERN_2; | |
3385 | I915_WRITE(reg, temp); | |
3386 | ||
3387 | POSTING_READ(reg); | |
3388 | udelay(150); | |
3389 | ||
3390 | reg = FDI_RX_IIR(pipe); | |
3391 | for (tries = 0; tries < 5; tries++) { | |
3392 | temp = I915_READ(reg); | |
3393 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); | |
3394 | ||
3395 | if (temp & FDI_RX_SYMBOL_LOCK) { | |
3396 | I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK); | |
3397 | DRM_DEBUG_KMS("FDI train 2 done.\n"); | |
3398 | break; | |
3399 | } | |
3400 | } | |
3401 | if (tries == 5) | |
3402 | DRM_ERROR("FDI train 2 fail!\n"); | |
3403 | ||
3404 | DRM_DEBUG_KMS("FDI train done\n"); | |
3405 | ||
3406 | } | |
3407 | ||
3408 | static const int snb_b_fdi_train_param[] = { | |
3409 | FDI_LINK_TRAIN_400MV_0DB_SNB_B, | |
3410 | FDI_LINK_TRAIN_400MV_6DB_SNB_B, | |
3411 | FDI_LINK_TRAIN_600MV_3_5DB_SNB_B, | |
3412 | FDI_LINK_TRAIN_800MV_0DB_SNB_B, | |
3413 | }; | |
3414 | ||
3415 | /* The FDI link training functions for SNB/Cougarpoint. */ | |
3416 | static void gen6_fdi_link_train(struct drm_crtc *crtc) | |
3417 | { | |
3418 | struct drm_device *dev = crtc->dev; | |
3419 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3420 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3421 | int pipe = intel_crtc->pipe; | |
3422 | i915_reg_t reg; | |
3423 | u32 temp, i, retry; | |
3424 | ||
3425 | /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit | |
3426 | for train result */ | |
3427 | reg = FDI_RX_IMR(pipe); | |
3428 | temp = I915_READ(reg); | |
3429 | temp &= ~FDI_RX_SYMBOL_LOCK; | |
3430 | temp &= ~FDI_RX_BIT_LOCK; | |
3431 | I915_WRITE(reg, temp); | |
3432 | ||
3433 | POSTING_READ(reg); | |
3434 | udelay(150); | |
3435 | ||
3436 | /* enable CPU FDI TX and PCH FDI RX */ | |
3437 | reg = FDI_TX_CTL(pipe); | |
3438 | temp = I915_READ(reg); | |
3439 | temp &= ~FDI_DP_PORT_WIDTH_MASK; | |
3440 | temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes); | |
3441 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3442 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
3443 | temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK; | |
3444 | /* SNB-B */ | |
3445 | temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B; | |
3446 | I915_WRITE(reg, temp | FDI_TX_ENABLE); | |
3447 | ||
3448 | I915_WRITE(FDI_RX_MISC(pipe), | |
3449 | FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); | |
3450 | ||
3451 | reg = FDI_RX_CTL(pipe); | |
3452 | temp = I915_READ(reg); | |
3453 | if (HAS_PCH_CPT(dev)) { | |
3454 | temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT; | |
3455 | temp |= FDI_LINK_TRAIN_PATTERN_1_CPT; | |
3456 | } else { | |
3457 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3458 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
3459 | } | |
3460 | I915_WRITE(reg, temp | FDI_RX_ENABLE); | |
3461 | ||
3462 | POSTING_READ(reg); | |
3463 | udelay(150); | |
3464 | ||
3465 | for (i = 0; i < 4; i++) { | |
3466 | reg = FDI_TX_CTL(pipe); | |
3467 | temp = I915_READ(reg); | |
3468 | temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK; | |
3469 | temp |= snb_b_fdi_train_param[i]; | |
3470 | I915_WRITE(reg, temp); | |
3471 | ||
3472 | POSTING_READ(reg); | |
3473 | udelay(500); | |
3474 | ||
3475 | for (retry = 0; retry < 5; retry++) { | |
3476 | reg = FDI_RX_IIR(pipe); | |
3477 | temp = I915_READ(reg); | |
3478 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); | |
3479 | if (temp & FDI_RX_BIT_LOCK) { | |
3480 | I915_WRITE(reg, temp | FDI_RX_BIT_LOCK); | |
3481 | DRM_DEBUG_KMS("FDI train 1 done.\n"); | |
3482 | break; | |
3483 | } | |
3484 | udelay(50); | |
3485 | } | |
3486 | if (retry < 5) | |
3487 | break; | |
3488 | } | |
3489 | if (i == 4) | |
3490 | DRM_ERROR("FDI train 1 fail!\n"); | |
3491 | ||
3492 | /* Train 2 */ | |
3493 | reg = FDI_TX_CTL(pipe); | |
3494 | temp = I915_READ(reg); | |
3495 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3496 | temp |= FDI_LINK_TRAIN_PATTERN_2; | |
3497 | if (IS_GEN6(dev)) { | |
3498 | temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK; | |
3499 | /* SNB-B */ | |
3500 | temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B; | |
3501 | } | |
3502 | I915_WRITE(reg, temp); | |
3503 | ||
3504 | reg = FDI_RX_CTL(pipe); | |
3505 | temp = I915_READ(reg); | |
3506 | if (HAS_PCH_CPT(dev)) { | |
3507 | temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT; | |
3508 | temp |= FDI_LINK_TRAIN_PATTERN_2_CPT; | |
3509 | } else { | |
3510 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3511 | temp |= FDI_LINK_TRAIN_PATTERN_2; | |
3512 | } | |
3513 | I915_WRITE(reg, temp); | |
3514 | ||
3515 | POSTING_READ(reg); | |
3516 | udelay(150); | |
3517 | ||
3518 | for (i = 0; i < 4; i++) { | |
3519 | reg = FDI_TX_CTL(pipe); | |
3520 | temp = I915_READ(reg); | |
3521 | temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK; | |
3522 | temp |= snb_b_fdi_train_param[i]; | |
3523 | I915_WRITE(reg, temp); | |
3524 | ||
3525 | POSTING_READ(reg); | |
3526 | udelay(500); | |
3527 | ||
3528 | for (retry = 0; retry < 5; retry++) { | |
3529 | reg = FDI_RX_IIR(pipe); | |
3530 | temp = I915_READ(reg); | |
3531 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); | |
3532 | if (temp & FDI_RX_SYMBOL_LOCK) { | |
3533 | I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK); | |
3534 | DRM_DEBUG_KMS("FDI train 2 done.\n"); | |
3535 | break; | |
3536 | } | |
3537 | udelay(50); | |
3538 | } | |
3539 | if (retry < 5) | |
3540 | break; | |
3541 | } | |
3542 | if (i == 4) | |
3543 | DRM_ERROR("FDI train 2 fail!\n"); | |
3544 | ||
3545 | DRM_DEBUG_KMS("FDI train done.\n"); | |
3546 | } | |
3547 | ||
3548 | /* Manual link training for Ivy Bridge A0 parts */ | |
3549 | static void ivb_manual_fdi_link_train(struct drm_crtc *crtc) | |
3550 | { | |
3551 | struct drm_device *dev = crtc->dev; | |
3552 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3553 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3554 | int pipe = intel_crtc->pipe; | |
3555 | i915_reg_t reg; | |
3556 | u32 temp, i, j; | |
3557 | ||
3558 | /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit | |
3559 | for train result */ | |
3560 | reg = FDI_RX_IMR(pipe); | |
3561 | temp = I915_READ(reg); | |
3562 | temp &= ~FDI_RX_SYMBOL_LOCK; | |
3563 | temp &= ~FDI_RX_BIT_LOCK; | |
3564 | I915_WRITE(reg, temp); | |
3565 | ||
3566 | POSTING_READ(reg); | |
3567 | udelay(150); | |
3568 | ||
3569 | DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n", | |
3570 | I915_READ(FDI_RX_IIR(pipe))); | |
3571 | ||
3572 | /* Try each vswing and preemphasis setting twice before moving on */ | |
3573 | for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) { | |
3574 | /* disable first in case we need to retry */ | |
3575 | reg = FDI_TX_CTL(pipe); | |
3576 | temp = I915_READ(reg); | |
3577 | temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB); | |
3578 | temp &= ~FDI_TX_ENABLE; | |
3579 | I915_WRITE(reg, temp); | |
3580 | ||
3581 | reg = FDI_RX_CTL(pipe); | |
3582 | temp = I915_READ(reg); | |
3583 | temp &= ~FDI_LINK_TRAIN_AUTO; | |
3584 | temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT; | |
3585 | temp &= ~FDI_RX_ENABLE; | |
3586 | I915_WRITE(reg, temp); | |
3587 | ||
3588 | /* enable CPU FDI TX and PCH FDI RX */ | |
3589 | reg = FDI_TX_CTL(pipe); | |
3590 | temp = I915_READ(reg); | |
3591 | temp &= ~FDI_DP_PORT_WIDTH_MASK; | |
3592 | temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes); | |
3593 | temp |= FDI_LINK_TRAIN_PATTERN_1_IVB; | |
3594 | temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK; | |
3595 | temp |= snb_b_fdi_train_param[j/2]; | |
3596 | temp |= FDI_COMPOSITE_SYNC; | |
3597 | I915_WRITE(reg, temp | FDI_TX_ENABLE); | |
3598 | ||
3599 | I915_WRITE(FDI_RX_MISC(pipe), | |
3600 | FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); | |
3601 | ||
3602 | reg = FDI_RX_CTL(pipe); | |
3603 | temp = I915_READ(reg); | |
3604 | temp |= FDI_LINK_TRAIN_PATTERN_1_CPT; | |
3605 | temp |= FDI_COMPOSITE_SYNC; | |
3606 | I915_WRITE(reg, temp | FDI_RX_ENABLE); | |
3607 | ||
3608 | POSTING_READ(reg); | |
3609 | udelay(1); /* should be 0.5us */ | |
3610 | ||
3611 | for (i = 0; i < 4; i++) { | |
3612 | reg = FDI_RX_IIR(pipe); | |
3613 | temp = I915_READ(reg); | |
3614 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); | |
3615 | ||
3616 | if (temp & FDI_RX_BIT_LOCK || | |
3617 | (I915_READ(reg) & FDI_RX_BIT_LOCK)) { | |
3618 | I915_WRITE(reg, temp | FDI_RX_BIT_LOCK); | |
3619 | DRM_DEBUG_KMS("FDI train 1 done, level %i.\n", | |
3620 | i); | |
3621 | break; | |
3622 | } | |
3623 | udelay(1); /* should be 0.5us */ | |
3624 | } | |
3625 | if (i == 4) { | |
3626 | DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2); | |
3627 | continue; | |
3628 | } | |
3629 | ||
3630 | /* Train 2 */ | |
3631 | reg = FDI_TX_CTL(pipe); | |
3632 | temp = I915_READ(reg); | |
3633 | temp &= ~FDI_LINK_TRAIN_NONE_IVB; | |
3634 | temp |= FDI_LINK_TRAIN_PATTERN_2_IVB; | |
3635 | I915_WRITE(reg, temp); | |
3636 | ||
3637 | reg = FDI_RX_CTL(pipe); | |
3638 | temp = I915_READ(reg); | |
3639 | temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT; | |
3640 | temp |= FDI_LINK_TRAIN_PATTERN_2_CPT; | |
3641 | I915_WRITE(reg, temp); | |
3642 | ||
3643 | POSTING_READ(reg); | |
3644 | udelay(2); /* should be 1.5us */ | |
3645 | ||
3646 | for (i = 0; i < 4; i++) { | |
3647 | reg = FDI_RX_IIR(pipe); | |
3648 | temp = I915_READ(reg); | |
3649 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); | |
3650 | ||
3651 | if (temp & FDI_RX_SYMBOL_LOCK || | |
3652 | (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) { | |
3653 | I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK); | |
3654 | DRM_DEBUG_KMS("FDI train 2 done, level %i.\n", | |
3655 | i); | |
3656 | goto train_done; | |
3657 | } | |
3658 | udelay(2); /* should be 1.5us */ | |
3659 | } | |
3660 | if (i == 4) | |
3661 | DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2); | |
3662 | } | |
3663 | ||
3664 | train_done: | |
3665 | DRM_DEBUG_KMS("FDI train done.\n"); | |
3666 | } | |
3667 | ||
3668 | static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc) | |
3669 | { | |
3670 | struct drm_device *dev = intel_crtc->base.dev; | |
3671 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3672 | int pipe = intel_crtc->pipe; | |
3673 | i915_reg_t reg; | |
3674 | u32 temp; | |
3675 | ||
3676 | /* enable PCH FDI RX PLL, wait warmup plus DMI latency */ | |
3677 | reg = FDI_RX_CTL(pipe); | |
3678 | temp = I915_READ(reg); | |
3679 | temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16)); | |
3680 | temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes); | |
3681 | temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11; | |
3682 | I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE); | |
3683 | ||
3684 | POSTING_READ(reg); | |
3685 | udelay(200); | |
3686 | ||
3687 | /* Switch from Rawclk to PCDclk */ | |
3688 | temp = I915_READ(reg); | |
3689 | I915_WRITE(reg, temp | FDI_PCDCLK); | |
3690 | ||
3691 | POSTING_READ(reg); | |
3692 | udelay(200); | |
3693 | ||
3694 | /* Enable CPU FDI TX PLL, always on for Ironlake */ | |
3695 | reg = FDI_TX_CTL(pipe); | |
3696 | temp = I915_READ(reg); | |
3697 | if ((temp & FDI_TX_PLL_ENABLE) == 0) { | |
3698 | I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE); | |
3699 | ||
3700 | POSTING_READ(reg); | |
3701 | udelay(100); | |
3702 | } | |
3703 | } | |
3704 | ||
3705 | static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc) | |
3706 | { | |
3707 | struct drm_device *dev = intel_crtc->base.dev; | |
3708 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3709 | int pipe = intel_crtc->pipe; | |
3710 | i915_reg_t reg; | |
3711 | u32 temp; | |
3712 | ||
3713 | /* Switch from PCDclk to Rawclk */ | |
3714 | reg = FDI_RX_CTL(pipe); | |
3715 | temp = I915_READ(reg); | |
3716 | I915_WRITE(reg, temp & ~FDI_PCDCLK); | |
3717 | ||
3718 | /* Disable CPU FDI TX PLL */ | |
3719 | reg = FDI_TX_CTL(pipe); | |
3720 | temp = I915_READ(reg); | |
3721 | I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE); | |
3722 | ||
3723 | POSTING_READ(reg); | |
3724 | udelay(100); | |
3725 | ||
3726 | reg = FDI_RX_CTL(pipe); | |
3727 | temp = I915_READ(reg); | |
3728 | I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE); | |
3729 | ||
3730 | /* Wait for the clocks to turn off. */ | |
3731 | POSTING_READ(reg); | |
3732 | udelay(100); | |
3733 | } | |
3734 | ||
3735 | static void ironlake_fdi_disable(struct drm_crtc *crtc) | |
3736 | { | |
3737 | struct drm_device *dev = crtc->dev; | |
3738 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3739 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3740 | int pipe = intel_crtc->pipe; | |
3741 | i915_reg_t reg; | |
3742 | u32 temp; | |
3743 | ||
3744 | /* disable CPU FDI tx and PCH FDI rx */ | |
3745 | reg = FDI_TX_CTL(pipe); | |
3746 | temp = I915_READ(reg); | |
3747 | I915_WRITE(reg, temp & ~FDI_TX_ENABLE); | |
3748 | POSTING_READ(reg); | |
3749 | ||
3750 | reg = FDI_RX_CTL(pipe); | |
3751 | temp = I915_READ(reg); | |
3752 | temp &= ~(0x7 << 16); | |
3753 | temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11; | |
3754 | I915_WRITE(reg, temp & ~FDI_RX_ENABLE); | |
3755 | ||
3756 | POSTING_READ(reg); | |
3757 | udelay(100); | |
3758 | ||
3759 | /* Ironlake workaround, disable clock pointer after downing FDI */ | |
3760 | if (HAS_PCH_IBX(dev)) | |
3761 | I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR); | |
3762 | ||
3763 | /* still set train pattern 1 */ | |
3764 | reg = FDI_TX_CTL(pipe); | |
3765 | temp = I915_READ(reg); | |
3766 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3767 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
3768 | I915_WRITE(reg, temp); | |
3769 | ||
3770 | reg = FDI_RX_CTL(pipe); | |
3771 | temp = I915_READ(reg); | |
3772 | if (HAS_PCH_CPT(dev)) { | |
3773 | temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT; | |
3774 | temp |= FDI_LINK_TRAIN_PATTERN_1_CPT; | |
3775 | } else { | |
3776 | temp &= ~FDI_LINK_TRAIN_NONE; | |
3777 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
3778 | } | |
3779 | /* BPC in FDI rx is consistent with that in PIPECONF */ | |
3780 | temp &= ~(0x07 << 16); | |
3781 | temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11; | |
3782 | I915_WRITE(reg, temp); | |
3783 | ||
3784 | POSTING_READ(reg); | |
3785 | udelay(100); | |
3786 | } | |
3787 | ||
3788 | bool intel_has_pending_fb_unpin(struct drm_device *dev) | |
3789 | { | |
3790 | struct intel_crtc *crtc; | |
3791 | ||
3792 | /* Note that we don't need to be called with mode_config.lock here | |
3793 | * as our list of CRTC objects is static for the lifetime of the | |
3794 | * device and so cannot disappear as we iterate. Similarly, we can | |
3795 | * happily treat the predicates as racy, atomic checks as userspace | |
3796 | * cannot claim and pin a new fb without at least acquring the | |
3797 | * struct_mutex and so serialising with us. | |
3798 | */ | |
3799 | for_each_intel_crtc(dev, crtc) { | |
3800 | if (atomic_read(&crtc->unpin_work_count) == 0) | |
3801 | continue; | |
3802 | ||
3803 | if (crtc->flip_work) | |
3804 | intel_wait_for_vblank(dev, crtc->pipe); | |
3805 | ||
3806 | return true; | |
3807 | } | |
3808 | ||
3809 | return false; | |
3810 | } | |
3811 | ||
3812 | static void page_flip_completed(struct intel_crtc *intel_crtc) | |
3813 | { | |
3814 | struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev); | |
3815 | struct intel_flip_work *work = intel_crtc->flip_work; | |
3816 | ||
3817 | intel_crtc->flip_work = NULL; | |
3818 | ||
3819 | if (work->event) | |
3820 | drm_crtc_send_vblank_event(&intel_crtc->base, work->event); | |
3821 | ||
3822 | drm_crtc_vblank_put(&intel_crtc->base); | |
3823 | ||
3824 | wake_up_all(&dev_priv->pending_flip_queue); | |
3825 | queue_work(dev_priv->wq, &work->unpin_work); | |
3826 | ||
3827 | trace_i915_flip_complete(intel_crtc->plane, | |
3828 | work->pending_flip_obj); | |
3829 | } | |
3830 | ||
3831 | static int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc) | |
3832 | { | |
3833 | struct drm_device *dev = crtc->dev; | |
3834 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3835 | long ret; | |
3836 | ||
3837 | WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue)); | |
3838 | ||
3839 | ret = wait_event_interruptible_timeout( | |
3840 | dev_priv->pending_flip_queue, | |
3841 | !intel_crtc_has_pending_flip(crtc), | |
3842 | 60*HZ); | |
3843 | ||
3844 | if (ret < 0) | |
3845 | return ret; | |
3846 | ||
3847 | if (ret == 0) { | |
3848 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3849 | struct intel_flip_work *work; | |
3850 | ||
3851 | spin_lock_irq(&dev->event_lock); | |
3852 | work = intel_crtc->flip_work; | |
3853 | if (work && !is_mmio_work(work)) { | |
3854 | WARN_ONCE(1, "Removing stuck page flip\n"); | |
3855 | page_flip_completed(intel_crtc); | |
3856 | } | |
3857 | spin_unlock_irq(&dev->event_lock); | |
3858 | } | |
3859 | ||
3860 | return 0; | |
3861 | } | |
3862 | ||
3863 | static void lpt_disable_iclkip(struct drm_i915_private *dev_priv) | |
3864 | { | |
3865 | u32 temp; | |
3866 | ||
3867 | I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE); | |
3868 | ||
3869 | mutex_lock(&dev_priv->sb_lock); | |
3870 | ||
3871 | temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK); | |
3872 | temp |= SBI_SSCCTL_DISABLE; | |
3873 | intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK); | |
3874 | ||
3875 | mutex_unlock(&dev_priv->sb_lock); | |
3876 | } | |
3877 | ||
3878 | /* Program iCLKIP clock to the desired frequency */ | |
3879 | static void lpt_program_iclkip(struct drm_crtc *crtc) | |
3880 | { | |
3881 | struct drm_i915_private *dev_priv = to_i915(crtc->dev); | |
3882 | int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock; | |
3883 | u32 divsel, phaseinc, auxdiv, phasedir = 0; | |
3884 | u32 temp; | |
3885 | ||
3886 | lpt_disable_iclkip(dev_priv); | |
3887 | ||
3888 | /* The iCLK virtual clock root frequency is in MHz, | |
3889 | * but the adjusted_mode->crtc_clock in in KHz. To get the | |
3890 | * divisors, it is necessary to divide one by another, so we | |
3891 | * convert the virtual clock precision to KHz here for higher | |
3892 | * precision. | |
3893 | */ | |
3894 | for (auxdiv = 0; auxdiv < 2; auxdiv++) { | |
3895 | u32 iclk_virtual_root_freq = 172800 * 1000; | |
3896 | u32 iclk_pi_range = 64; | |
3897 | u32 desired_divisor; | |
3898 | ||
3899 | desired_divisor = DIV_ROUND_CLOSEST(iclk_virtual_root_freq, | |
3900 | clock << auxdiv); | |
3901 | divsel = (desired_divisor / iclk_pi_range) - 2; | |
3902 | phaseinc = desired_divisor % iclk_pi_range; | |
3903 | ||
3904 | /* | |
3905 | * Near 20MHz is a corner case which is | |
3906 | * out of range for the 7-bit divisor | |
3907 | */ | |
3908 | if (divsel <= 0x7f) | |
3909 | break; | |
3910 | } | |
3911 | ||
3912 | /* This should not happen with any sane values */ | |
3913 | WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) & | |
3914 | ~SBI_SSCDIVINTPHASE_DIVSEL_MASK); | |
3915 | WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) & | |
3916 | ~SBI_SSCDIVINTPHASE_INCVAL_MASK); | |
3917 | ||
3918 | DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n", | |
3919 | clock, | |
3920 | auxdiv, | |
3921 | divsel, | |
3922 | phasedir, | |
3923 | phaseinc); | |
3924 | ||
3925 | mutex_lock(&dev_priv->sb_lock); | |
3926 | ||
3927 | /* Program SSCDIVINTPHASE6 */ | |
3928 | temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK); | |
3929 | temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK; | |
3930 | temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel); | |
3931 | temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK; | |
3932 | temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc); | |
3933 | temp |= SBI_SSCDIVINTPHASE_DIR(phasedir); | |
3934 | temp |= SBI_SSCDIVINTPHASE_PROPAGATE; | |
3935 | intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK); | |
3936 | ||
3937 | /* Program SSCAUXDIV */ | |
3938 | temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK); | |
3939 | temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1); | |
3940 | temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv); | |
3941 | intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK); | |
3942 | ||
3943 | /* Enable modulator and associated divider */ | |
3944 | temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK); | |
3945 | temp &= ~SBI_SSCCTL_DISABLE; | |
3946 | intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK); | |
3947 | ||
3948 | mutex_unlock(&dev_priv->sb_lock); | |
3949 | ||
3950 | /* Wait for initialization time */ | |
3951 | udelay(24); | |
3952 | ||
3953 | I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE); | |
3954 | } | |
3955 | ||
3956 | int lpt_get_iclkip(struct drm_i915_private *dev_priv) | |
3957 | { | |
3958 | u32 divsel, phaseinc, auxdiv; | |
3959 | u32 iclk_virtual_root_freq = 172800 * 1000; | |
3960 | u32 iclk_pi_range = 64; | |
3961 | u32 desired_divisor; | |
3962 | u32 temp; | |
3963 | ||
3964 | if ((I915_READ(PIXCLK_GATE) & PIXCLK_GATE_UNGATE) == 0) | |
3965 | return 0; | |
3966 | ||
3967 | mutex_lock(&dev_priv->sb_lock); | |
3968 | ||
3969 | temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK); | |
3970 | if (temp & SBI_SSCCTL_DISABLE) { | |
3971 | mutex_unlock(&dev_priv->sb_lock); | |
3972 | return 0; | |
3973 | } | |
3974 | ||
3975 | temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK); | |
3976 | divsel = (temp & SBI_SSCDIVINTPHASE_DIVSEL_MASK) >> | |
3977 | SBI_SSCDIVINTPHASE_DIVSEL_SHIFT; | |
3978 | phaseinc = (temp & SBI_SSCDIVINTPHASE_INCVAL_MASK) >> | |
3979 | SBI_SSCDIVINTPHASE_INCVAL_SHIFT; | |
3980 | ||
3981 | temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK); | |
3982 | auxdiv = (temp & SBI_SSCAUXDIV_FINALDIV2SEL_MASK) >> | |
3983 | SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT; | |
3984 | ||
3985 | mutex_unlock(&dev_priv->sb_lock); | |
3986 | ||
3987 | desired_divisor = (divsel + 2) * iclk_pi_range + phaseinc; | |
3988 | ||
3989 | return DIV_ROUND_CLOSEST(iclk_virtual_root_freq, | |
3990 | desired_divisor << auxdiv); | |
3991 | } | |
3992 | ||
3993 | static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc, | |
3994 | enum pipe pch_transcoder) | |
3995 | { | |
3996 | struct drm_device *dev = crtc->base.dev; | |
3997 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3998 | enum transcoder cpu_transcoder = crtc->config->cpu_transcoder; | |
3999 | ||
4000 | I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder), | |
4001 | I915_READ(HTOTAL(cpu_transcoder))); | |
4002 | I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder), | |
4003 | I915_READ(HBLANK(cpu_transcoder))); | |
4004 | I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder), | |
4005 | I915_READ(HSYNC(cpu_transcoder))); | |
4006 | ||
4007 | I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder), | |
4008 | I915_READ(VTOTAL(cpu_transcoder))); | |
4009 | I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder), | |
4010 | I915_READ(VBLANK(cpu_transcoder))); | |
4011 | I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder), | |
4012 | I915_READ(VSYNC(cpu_transcoder))); | |
4013 | I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder), | |
4014 | I915_READ(VSYNCSHIFT(cpu_transcoder))); | |
4015 | } | |
4016 | ||
4017 | static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable) | |
4018 | { | |
4019 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4020 | uint32_t temp; | |
4021 | ||
4022 | temp = I915_READ(SOUTH_CHICKEN1); | |
4023 | if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable) | |
4024 | return; | |
4025 | ||
4026 | WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE); | |
4027 | WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE); | |
4028 | ||
4029 | temp &= ~FDI_BC_BIFURCATION_SELECT; | |
4030 | if (enable) | |
4031 | temp |= FDI_BC_BIFURCATION_SELECT; | |
4032 | ||
4033 | DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis"); | |
4034 | I915_WRITE(SOUTH_CHICKEN1, temp); | |
4035 | POSTING_READ(SOUTH_CHICKEN1); | |
4036 | } | |
4037 | ||
4038 | static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc) | |
4039 | { | |
4040 | struct drm_device *dev = intel_crtc->base.dev; | |
4041 | ||
4042 | switch (intel_crtc->pipe) { | |
4043 | case PIPE_A: | |
4044 | break; | |
4045 | case PIPE_B: | |
4046 | if (intel_crtc->config->fdi_lanes > 2) | |
4047 | cpt_set_fdi_bc_bifurcation(dev, false); | |
4048 | else | |
4049 | cpt_set_fdi_bc_bifurcation(dev, true); | |
4050 | ||
4051 | break; | |
4052 | case PIPE_C: | |
4053 | cpt_set_fdi_bc_bifurcation(dev, true); | |
4054 | ||
4055 | break; | |
4056 | default: | |
4057 | BUG(); | |
4058 | } | |
4059 | } | |
4060 | ||
4061 | /* Return which DP Port should be selected for Transcoder DP control */ | |
4062 | static enum port | |
4063 | intel_trans_dp_port_sel(struct drm_crtc *crtc) | |
4064 | { | |
4065 | struct drm_device *dev = crtc->dev; | |
4066 | struct intel_encoder *encoder; | |
4067 | ||
4068 | for_each_encoder_on_crtc(dev, crtc, encoder) { | |
4069 | if (encoder->type == INTEL_OUTPUT_DISPLAYPORT || | |
4070 | encoder->type == INTEL_OUTPUT_EDP) | |
4071 | return enc_to_dig_port(&encoder->base)->port; | |
4072 | } | |
4073 | ||
4074 | return -1; | |
4075 | } | |
4076 | ||
4077 | /* | |
4078 | * Enable PCH resources required for PCH ports: | |
4079 | * - PCH PLLs | |
4080 | * - FDI training & RX/TX | |
4081 | * - update transcoder timings | |
4082 | * - DP transcoding bits | |
4083 | * - transcoder | |
4084 | */ | |
4085 | static void ironlake_pch_enable(struct drm_crtc *crtc) | |
4086 | { | |
4087 | struct drm_device *dev = crtc->dev; | |
4088 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4089 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4090 | int pipe = intel_crtc->pipe; | |
4091 | u32 temp; | |
4092 | ||
4093 | assert_pch_transcoder_disabled(dev_priv, pipe); | |
4094 | ||
4095 | if (IS_IVYBRIDGE(dev)) | |
4096 | ivybridge_update_fdi_bc_bifurcation(intel_crtc); | |
4097 | ||
4098 | /* Write the TU size bits before fdi link training, so that error | |
4099 | * detection works. */ | |
4100 | I915_WRITE(FDI_RX_TUSIZE1(pipe), | |
4101 | I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK); | |
4102 | ||
4103 | /* For PCH output, training FDI link */ | |
4104 | dev_priv->display.fdi_link_train(crtc); | |
4105 | ||
4106 | /* We need to program the right clock selection before writing the pixel | |
4107 | * mutliplier into the DPLL. */ | |
4108 | if (HAS_PCH_CPT(dev)) { | |
4109 | u32 sel; | |
4110 | ||
4111 | temp = I915_READ(PCH_DPLL_SEL); | |
4112 | temp |= TRANS_DPLL_ENABLE(pipe); | |
4113 | sel = TRANS_DPLLB_SEL(pipe); | |
4114 | if (intel_crtc->config->shared_dpll == | |
4115 | intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B)) | |
4116 | temp |= sel; | |
4117 | else | |
4118 | temp &= ~sel; | |
4119 | I915_WRITE(PCH_DPLL_SEL, temp); | |
4120 | } | |
4121 | ||
4122 | /* XXX: pch pll's can be enabled any time before we enable the PCH | |
4123 | * transcoder, and we actually should do this to not upset any PCH | |
4124 | * transcoder that already use the clock when we share it. | |
4125 | * | |
4126 | * Note that enable_shared_dpll tries to do the right thing, but | |
4127 | * get_shared_dpll unconditionally resets the pll - we need that to have | |
4128 | * the right LVDS enable sequence. */ | |
4129 | intel_enable_shared_dpll(intel_crtc); | |
4130 | ||
4131 | /* set transcoder timing, panel must allow it */ | |
4132 | assert_panel_unlocked(dev_priv, pipe); | |
4133 | ironlake_pch_transcoder_set_timings(intel_crtc, pipe); | |
4134 | ||
4135 | intel_fdi_normal_train(crtc); | |
4136 | ||
4137 | /* For PCH DP, enable TRANS_DP_CTL */ | |
4138 | if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) { | |
4139 | const struct drm_display_mode *adjusted_mode = | |
4140 | &intel_crtc->config->base.adjusted_mode; | |
4141 | u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5; | |
4142 | i915_reg_t reg = TRANS_DP_CTL(pipe); | |
4143 | temp = I915_READ(reg); | |
4144 | temp &= ~(TRANS_DP_PORT_SEL_MASK | | |
4145 | TRANS_DP_SYNC_MASK | | |
4146 | TRANS_DP_BPC_MASK); | |
4147 | temp |= TRANS_DP_OUTPUT_ENABLE; | |
4148 | temp |= bpc << 9; /* same format but at 11:9 */ | |
4149 | ||
4150 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
4151 | temp |= TRANS_DP_HSYNC_ACTIVE_HIGH; | |
4152 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
4153 | temp |= TRANS_DP_VSYNC_ACTIVE_HIGH; | |
4154 | ||
4155 | switch (intel_trans_dp_port_sel(crtc)) { | |
4156 | case PORT_B: | |
4157 | temp |= TRANS_DP_PORT_SEL_B; | |
4158 | break; | |
4159 | case PORT_C: | |
4160 | temp |= TRANS_DP_PORT_SEL_C; | |
4161 | break; | |
4162 | case PORT_D: | |
4163 | temp |= TRANS_DP_PORT_SEL_D; | |
4164 | break; | |
4165 | default: | |
4166 | BUG(); | |
4167 | } | |
4168 | ||
4169 | I915_WRITE(reg, temp); | |
4170 | } | |
4171 | ||
4172 | ironlake_enable_pch_transcoder(dev_priv, pipe); | |
4173 | } | |
4174 | ||
4175 | static void lpt_pch_enable(struct drm_crtc *crtc) | |
4176 | { | |
4177 | struct drm_device *dev = crtc->dev; | |
4178 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4179 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4180 | enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder; | |
4181 | ||
4182 | assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A); | |
4183 | ||
4184 | lpt_program_iclkip(crtc); | |
4185 | ||
4186 | /* Set transcoder timing. */ | |
4187 | ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A); | |
4188 | ||
4189 | lpt_enable_pch_transcoder(dev_priv, cpu_transcoder); | |
4190 | } | |
4191 | ||
4192 | static void cpt_verify_modeset(struct drm_device *dev, int pipe) | |
4193 | { | |
4194 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4195 | i915_reg_t dslreg = PIPEDSL(pipe); | |
4196 | u32 temp; | |
4197 | ||
4198 | temp = I915_READ(dslreg); | |
4199 | udelay(500); | |
4200 | if (wait_for(I915_READ(dslreg) != temp, 5)) { | |
4201 | if (wait_for(I915_READ(dslreg) != temp, 5)) | |
4202 | DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe)); | |
4203 | } | |
4204 | } | |
4205 | ||
4206 | static int | |
4207 | skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach, | |
4208 | unsigned scaler_user, int *scaler_id, unsigned int rotation, | |
4209 | int src_w, int src_h, int dst_w, int dst_h) | |
4210 | { | |
4211 | struct intel_crtc_scaler_state *scaler_state = | |
4212 | &crtc_state->scaler_state; | |
4213 | struct intel_crtc *intel_crtc = | |
4214 | to_intel_crtc(crtc_state->base.crtc); | |
4215 | int need_scaling; | |
4216 | ||
4217 | need_scaling = intel_rotation_90_or_270(rotation) ? | |
4218 | (src_h != dst_w || src_w != dst_h): | |
4219 | (src_w != dst_w || src_h != dst_h); | |
4220 | ||
4221 | /* | |
4222 | * if plane is being disabled or scaler is no more required or force detach | |
4223 | * - free scaler binded to this plane/crtc | |
4224 | * - in order to do this, update crtc->scaler_usage | |
4225 | * | |
4226 | * Here scaler state in crtc_state is set free so that | |
4227 | * scaler can be assigned to other user. Actual register | |
4228 | * update to free the scaler is done in plane/panel-fit programming. | |
4229 | * For this purpose crtc/plane_state->scaler_id isn't reset here. | |
4230 | */ | |
4231 | if (force_detach || !need_scaling) { | |
4232 | if (*scaler_id >= 0) { | |
4233 | scaler_state->scaler_users &= ~(1 << scaler_user); | |
4234 | scaler_state->scalers[*scaler_id].in_use = 0; | |
4235 | ||
4236 | DRM_DEBUG_KMS("scaler_user index %u.%u: " | |
4237 | "Staged freeing scaler id %d scaler_users = 0x%x\n", | |
4238 | intel_crtc->pipe, scaler_user, *scaler_id, | |
4239 | scaler_state->scaler_users); | |
4240 | *scaler_id = -1; | |
4241 | } | |
4242 | return 0; | |
4243 | } | |
4244 | ||
4245 | /* range checks */ | |
4246 | if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H || | |
4247 | dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H || | |
4248 | ||
4249 | src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H || | |
4250 | dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) { | |
4251 | DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u " | |
4252 | "size is out of scaler range\n", | |
4253 | intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h); | |
4254 | return -EINVAL; | |
4255 | } | |
4256 | ||
4257 | /* mark this plane as a scaler user in crtc_state */ | |
4258 | scaler_state->scaler_users |= (1 << scaler_user); | |
4259 | DRM_DEBUG_KMS("scaler_user index %u.%u: " | |
4260 | "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n", | |
4261 | intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h, | |
4262 | scaler_state->scaler_users); | |
4263 | ||
4264 | return 0; | |
4265 | } | |
4266 | ||
4267 | /** | |
4268 | * skl_update_scaler_crtc - Stages update to scaler state for a given crtc. | |
4269 | * | |
4270 | * @state: crtc's scaler state | |
4271 | * | |
4272 | * Return | |
4273 | * 0 - scaler_usage updated successfully | |
4274 | * error - requested scaling cannot be supported or other error condition | |
4275 | */ | |
4276 | int skl_update_scaler_crtc(struct intel_crtc_state *state) | |
4277 | { | |
4278 | struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc); | |
4279 | const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode; | |
4280 | ||
4281 | DRM_DEBUG_KMS("Updating scaler for [CRTC:%d:%s] scaler_user index %u.%u\n", | |
4282 | intel_crtc->base.base.id, intel_crtc->base.name, | |
4283 | intel_crtc->pipe, SKL_CRTC_INDEX); | |
4284 | ||
4285 | return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX, | |
4286 | &state->scaler_state.scaler_id, BIT(DRM_ROTATE_0), | |
4287 | state->pipe_src_w, state->pipe_src_h, | |
4288 | adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay); | |
4289 | } | |
4290 | ||
4291 | /** | |
4292 | * skl_update_scaler_plane - Stages update to scaler state for a given plane. | |
4293 | * | |
4294 | * @state: crtc's scaler state | |
4295 | * @plane_state: atomic plane state to update | |
4296 | * | |
4297 | * Return | |
4298 | * 0 - scaler_usage updated successfully | |
4299 | * error - requested scaling cannot be supported or other error condition | |
4300 | */ | |
4301 | static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state, | |
4302 | struct intel_plane_state *plane_state) | |
4303 | { | |
4304 | ||
4305 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc); | |
4306 | struct intel_plane *intel_plane = | |
4307 | to_intel_plane(plane_state->base.plane); | |
4308 | struct drm_framebuffer *fb = plane_state->base.fb; | |
4309 | int ret; | |
4310 | ||
4311 | bool force_detach = !fb || !plane_state->visible; | |
4312 | ||
4313 | DRM_DEBUG_KMS("Updating scaler for [PLANE:%d:%s] scaler_user index %u.%u\n", | |
4314 | intel_plane->base.base.id, intel_plane->base.name, | |
4315 | intel_crtc->pipe, drm_plane_index(&intel_plane->base)); | |
4316 | ||
4317 | ret = skl_update_scaler(crtc_state, force_detach, | |
4318 | drm_plane_index(&intel_plane->base), | |
4319 | &plane_state->scaler_id, | |
4320 | plane_state->base.rotation, | |
4321 | drm_rect_width(&plane_state->src) >> 16, | |
4322 | drm_rect_height(&plane_state->src) >> 16, | |
4323 | drm_rect_width(&plane_state->dst), | |
4324 | drm_rect_height(&plane_state->dst)); | |
4325 | ||
4326 | if (ret || plane_state->scaler_id < 0) | |
4327 | return ret; | |
4328 | ||
4329 | /* check colorkey */ | |
4330 | if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) { | |
4331 | DRM_DEBUG_KMS("[PLANE:%d:%s] scaling with color key not allowed", | |
4332 | intel_plane->base.base.id, | |
4333 | intel_plane->base.name); | |
4334 | return -EINVAL; | |
4335 | } | |
4336 | ||
4337 | /* Check src format */ | |
4338 | switch (fb->pixel_format) { | |
4339 | case DRM_FORMAT_RGB565: | |
4340 | case DRM_FORMAT_XBGR8888: | |
4341 | case DRM_FORMAT_XRGB8888: | |
4342 | case DRM_FORMAT_ABGR8888: | |
4343 | case DRM_FORMAT_ARGB8888: | |
4344 | case DRM_FORMAT_XRGB2101010: | |
4345 | case DRM_FORMAT_XBGR2101010: | |
4346 | case DRM_FORMAT_YUYV: | |
4347 | case DRM_FORMAT_YVYU: | |
4348 | case DRM_FORMAT_UYVY: | |
4349 | case DRM_FORMAT_VYUY: | |
4350 | break; | |
4351 | default: | |
4352 | DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n", | |
4353 | intel_plane->base.base.id, intel_plane->base.name, | |
4354 | fb->base.id, fb->pixel_format); | |
4355 | return -EINVAL; | |
4356 | } | |
4357 | ||
4358 | return 0; | |
4359 | } | |
4360 | ||
4361 | static void skylake_scaler_disable(struct intel_crtc *crtc) | |
4362 | { | |
4363 | int i; | |
4364 | ||
4365 | for (i = 0; i < crtc->num_scalers; i++) | |
4366 | skl_detach_scaler(crtc, i); | |
4367 | } | |
4368 | ||
4369 | static void skylake_pfit_enable(struct intel_crtc *crtc) | |
4370 | { | |
4371 | struct drm_device *dev = crtc->base.dev; | |
4372 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4373 | int pipe = crtc->pipe; | |
4374 | struct intel_crtc_scaler_state *scaler_state = | |
4375 | &crtc->config->scaler_state; | |
4376 | ||
4377 | DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config); | |
4378 | ||
4379 | if (crtc->config->pch_pfit.enabled) { | |
4380 | int id; | |
4381 | ||
4382 | if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) { | |
4383 | DRM_ERROR("Requesting pfit without getting a scaler first\n"); | |
4384 | return; | |
4385 | } | |
4386 | ||
4387 | id = scaler_state->scaler_id; | |
4388 | I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN | | |
4389 | PS_FILTER_MEDIUM | scaler_state->scalers[id].mode); | |
4390 | I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos); | |
4391 | I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size); | |
4392 | ||
4393 | DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id); | |
4394 | } | |
4395 | } | |
4396 | ||
4397 | static void ironlake_pfit_enable(struct intel_crtc *crtc) | |
4398 | { | |
4399 | struct drm_device *dev = crtc->base.dev; | |
4400 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4401 | int pipe = crtc->pipe; | |
4402 | ||
4403 | if (crtc->config->pch_pfit.enabled) { | |
4404 | /* Force use of hard-coded filter coefficients | |
4405 | * as some pre-programmed values are broken, | |
4406 | * e.g. x201. | |
4407 | */ | |
4408 | if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) | |
4409 | I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 | | |
4410 | PF_PIPE_SEL_IVB(pipe)); | |
4411 | else | |
4412 | I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3); | |
4413 | I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos); | |
4414 | I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size); | |
4415 | } | |
4416 | } | |
4417 | ||
4418 | void hsw_enable_ips(struct intel_crtc *crtc) | |
4419 | { | |
4420 | struct drm_device *dev = crtc->base.dev; | |
4421 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4422 | ||
4423 | if (!crtc->config->ips_enabled) | |
4424 | return; | |
4425 | ||
4426 | /* | |
4427 | * We can only enable IPS after we enable a plane and wait for a vblank | |
4428 | * This function is called from post_plane_update, which is run after | |
4429 | * a vblank wait. | |
4430 | */ | |
4431 | ||
4432 | assert_plane_enabled(dev_priv, crtc->plane); | |
4433 | if (IS_BROADWELL(dev)) { | |
4434 | mutex_lock(&dev_priv->rps.hw_lock); | |
4435 | WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000)); | |
4436 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4437 | /* Quoting Art Runyan: "its not safe to expect any particular | |
4438 | * value in IPS_CTL bit 31 after enabling IPS through the | |
4439 | * mailbox." Moreover, the mailbox may return a bogus state, | |
4440 | * so we need to just enable it and continue on. | |
4441 | */ | |
4442 | } else { | |
4443 | I915_WRITE(IPS_CTL, IPS_ENABLE); | |
4444 | /* The bit only becomes 1 in the next vblank, so this wait here | |
4445 | * is essentially intel_wait_for_vblank. If we don't have this | |
4446 | * and don't wait for vblanks until the end of crtc_enable, then | |
4447 | * the HW state readout code will complain that the expected | |
4448 | * IPS_CTL value is not the one we read. */ | |
4449 | if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50)) | |
4450 | DRM_ERROR("Timed out waiting for IPS enable\n"); | |
4451 | } | |
4452 | } | |
4453 | ||
4454 | void hsw_disable_ips(struct intel_crtc *crtc) | |
4455 | { | |
4456 | struct drm_device *dev = crtc->base.dev; | |
4457 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4458 | ||
4459 | if (!crtc->config->ips_enabled) | |
4460 | return; | |
4461 | ||
4462 | assert_plane_enabled(dev_priv, crtc->plane); | |
4463 | if (IS_BROADWELL(dev)) { | |
4464 | mutex_lock(&dev_priv->rps.hw_lock); | |
4465 | WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0)); | |
4466 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4467 | /* wait for pcode to finish disabling IPS, which may take up to 42ms */ | |
4468 | if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42)) | |
4469 | DRM_ERROR("Timed out waiting for IPS disable\n"); | |
4470 | } else { | |
4471 | I915_WRITE(IPS_CTL, 0); | |
4472 | POSTING_READ(IPS_CTL); | |
4473 | } | |
4474 | ||
4475 | /* We need to wait for a vblank before we can disable the plane. */ | |
4476 | intel_wait_for_vblank(dev, crtc->pipe); | |
4477 | } | |
4478 | ||
4479 | static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc) | |
4480 | { | |
4481 | if (intel_crtc->overlay) { | |
4482 | struct drm_device *dev = intel_crtc->base.dev; | |
4483 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4484 | ||
4485 | mutex_lock(&dev->struct_mutex); | |
4486 | dev_priv->mm.interruptible = false; | |
4487 | (void) intel_overlay_switch_off(intel_crtc->overlay); | |
4488 | dev_priv->mm.interruptible = true; | |
4489 | mutex_unlock(&dev->struct_mutex); | |
4490 | } | |
4491 | ||
4492 | /* Let userspace switch the overlay on again. In most cases userspace | |
4493 | * has to recompute where to put it anyway. | |
4494 | */ | |
4495 | } | |
4496 | ||
4497 | /** | |
4498 | * intel_post_enable_primary - Perform operations after enabling primary plane | |
4499 | * @crtc: the CRTC whose primary plane was just enabled | |
4500 | * | |
4501 | * Performs potentially sleeping operations that must be done after the primary | |
4502 | * plane is enabled, such as updating FBC and IPS. Note that this may be | |
4503 | * called due to an explicit primary plane update, or due to an implicit | |
4504 | * re-enable that is caused when a sprite plane is updated to no longer | |
4505 | * completely hide the primary plane. | |
4506 | */ | |
4507 | static void | |
4508 | intel_post_enable_primary(struct drm_crtc *crtc) | |
4509 | { | |
4510 | struct drm_device *dev = crtc->dev; | |
4511 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4512 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4513 | int pipe = intel_crtc->pipe; | |
4514 | ||
4515 | /* | |
4516 | * FIXME IPS should be fine as long as one plane is | |
4517 | * enabled, but in practice it seems to have problems | |
4518 | * when going from primary only to sprite only and vice | |
4519 | * versa. | |
4520 | */ | |
4521 | hsw_enable_ips(intel_crtc); | |
4522 | ||
4523 | /* | |
4524 | * Gen2 reports pipe underruns whenever all planes are disabled. | |
4525 | * So don't enable underrun reporting before at least some planes | |
4526 | * are enabled. | |
4527 | * FIXME: Need to fix the logic to work when we turn off all planes | |
4528 | * but leave the pipe running. | |
4529 | */ | |
4530 | if (IS_GEN2(dev)) | |
4531 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
4532 | ||
4533 | /* Underruns don't always raise interrupts, so check manually. */ | |
4534 | intel_check_cpu_fifo_underruns(dev_priv); | |
4535 | intel_check_pch_fifo_underruns(dev_priv); | |
4536 | } | |
4537 | ||
4538 | /* FIXME move all this to pre_plane_update() with proper state tracking */ | |
4539 | static void | |
4540 | intel_pre_disable_primary(struct drm_crtc *crtc) | |
4541 | { | |
4542 | struct drm_device *dev = crtc->dev; | |
4543 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4544 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4545 | int pipe = intel_crtc->pipe; | |
4546 | ||
4547 | /* | |
4548 | * Gen2 reports pipe underruns whenever all planes are disabled. | |
4549 | * So diasble underrun reporting before all the planes get disabled. | |
4550 | * FIXME: Need to fix the logic to work when we turn off all planes | |
4551 | * but leave the pipe running. | |
4552 | */ | |
4553 | if (IS_GEN2(dev)) | |
4554 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false); | |
4555 | ||
4556 | /* | |
4557 | * FIXME IPS should be fine as long as one plane is | |
4558 | * enabled, but in practice it seems to have problems | |
4559 | * when going from primary only to sprite only and vice | |
4560 | * versa. | |
4561 | */ | |
4562 | hsw_disable_ips(intel_crtc); | |
4563 | } | |
4564 | ||
4565 | /* FIXME get rid of this and use pre_plane_update */ | |
4566 | static void | |
4567 | intel_pre_disable_primary_noatomic(struct drm_crtc *crtc) | |
4568 | { | |
4569 | struct drm_device *dev = crtc->dev; | |
4570 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4571 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4572 | int pipe = intel_crtc->pipe; | |
4573 | ||
4574 | intel_pre_disable_primary(crtc); | |
4575 | ||
4576 | /* | |
4577 | * Vblank time updates from the shadow to live plane control register | |
4578 | * are blocked if the memory self-refresh mode is active at that | |
4579 | * moment. So to make sure the plane gets truly disabled, disable | |
4580 | * first the self-refresh mode. The self-refresh enable bit in turn | |
4581 | * will be checked/applied by the HW only at the next frame start | |
4582 | * event which is after the vblank start event, so we need to have a | |
4583 | * wait-for-vblank between disabling the plane and the pipe. | |
4584 | */ | |
4585 | if (HAS_GMCH_DISPLAY(dev)) { | |
4586 | intel_set_memory_cxsr(dev_priv, false); | |
4587 | dev_priv->wm.vlv.cxsr = false; | |
4588 | intel_wait_for_vblank(dev, pipe); | |
4589 | } | |
4590 | } | |
4591 | ||
4592 | static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state) | |
4593 | { | |
4594 | struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc); | |
4595 | struct drm_atomic_state *old_state = old_crtc_state->base.state; | |
4596 | struct intel_crtc_state *pipe_config = | |
4597 | to_intel_crtc_state(crtc->base.state); | |
4598 | struct drm_device *dev = crtc->base.dev; | |
4599 | struct drm_plane *primary = crtc->base.primary; | |
4600 | struct drm_plane_state *old_pri_state = | |
4601 | drm_atomic_get_existing_plane_state(old_state, primary); | |
4602 | ||
4603 | intel_frontbuffer_flip(dev, pipe_config->fb_bits); | |
4604 | ||
4605 | crtc->wm.cxsr_allowed = true; | |
4606 | ||
4607 | if (pipe_config->update_wm_post && pipe_config->base.active) | |
4608 | intel_update_watermarks(&crtc->base); | |
4609 | ||
4610 | if (old_pri_state) { | |
4611 | struct intel_plane_state *primary_state = | |
4612 | to_intel_plane_state(primary->state); | |
4613 | struct intel_plane_state *old_primary_state = | |
4614 | to_intel_plane_state(old_pri_state); | |
4615 | ||
4616 | intel_fbc_post_update(crtc); | |
4617 | ||
4618 | if (primary_state->visible && | |
4619 | (needs_modeset(&pipe_config->base) || | |
4620 | !old_primary_state->visible)) | |
4621 | intel_post_enable_primary(&crtc->base); | |
4622 | } | |
4623 | } | |
4624 | ||
4625 | static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state) | |
4626 | { | |
4627 | struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc); | |
4628 | struct drm_device *dev = crtc->base.dev; | |
4629 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4630 | struct intel_crtc_state *pipe_config = | |
4631 | to_intel_crtc_state(crtc->base.state); | |
4632 | struct drm_atomic_state *old_state = old_crtc_state->base.state; | |
4633 | struct drm_plane *primary = crtc->base.primary; | |
4634 | struct drm_plane_state *old_pri_state = | |
4635 | drm_atomic_get_existing_plane_state(old_state, primary); | |
4636 | bool modeset = needs_modeset(&pipe_config->base); | |
4637 | ||
4638 | if (old_pri_state) { | |
4639 | struct intel_plane_state *primary_state = | |
4640 | to_intel_plane_state(primary->state); | |
4641 | struct intel_plane_state *old_primary_state = | |
4642 | to_intel_plane_state(old_pri_state); | |
4643 | ||
4644 | intel_fbc_pre_update(crtc, pipe_config, primary_state); | |
4645 | ||
4646 | if (old_primary_state->visible && | |
4647 | (modeset || !primary_state->visible)) | |
4648 | intel_pre_disable_primary(&crtc->base); | |
4649 | } | |
4650 | ||
4651 | if (pipe_config->disable_cxsr && HAS_GMCH_DISPLAY(dev)) { | |
4652 | crtc->wm.cxsr_allowed = false; | |
4653 | ||
4654 | /* | |
4655 | * Vblank time updates from the shadow to live plane control register | |
4656 | * are blocked if the memory self-refresh mode is active at that | |
4657 | * moment. So to make sure the plane gets truly disabled, disable | |
4658 | * first the self-refresh mode. The self-refresh enable bit in turn | |
4659 | * will be checked/applied by the HW only at the next frame start | |
4660 | * event which is after the vblank start event, so we need to have a | |
4661 | * wait-for-vblank between disabling the plane and the pipe. | |
4662 | */ | |
4663 | if (old_crtc_state->base.active) { | |
4664 | intel_set_memory_cxsr(dev_priv, false); | |
4665 | dev_priv->wm.vlv.cxsr = false; | |
4666 | intel_wait_for_vblank(dev, crtc->pipe); | |
4667 | } | |
4668 | } | |
4669 | ||
4670 | /* | |
4671 | * IVB workaround: must disable low power watermarks for at least | |
4672 | * one frame before enabling scaling. LP watermarks can be re-enabled | |
4673 | * when scaling is disabled. | |
4674 | * | |
4675 | * WaCxSRDisabledForSpriteScaling:ivb | |
4676 | */ | |
4677 | if (pipe_config->disable_lp_wm) { | |
4678 | ilk_disable_lp_wm(dev); | |
4679 | intel_wait_for_vblank(dev, crtc->pipe); | |
4680 | } | |
4681 | ||
4682 | /* | |
4683 | * If we're doing a modeset, we're done. No need to do any pre-vblank | |
4684 | * watermark programming here. | |
4685 | */ | |
4686 | if (needs_modeset(&pipe_config->base)) | |
4687 | return; | |
4688 | ||
4689 | /* | |
4690 | * For platforms that support atomic watermarks, program the | |
4691 | * 'intermediate' watermarks immediately. On pre-gen9 platforms, these | |
4692 | * will be the intermediate values that are safe for both pre- and | |
4693 | * post- vblank; when vblank happens, the 'active' values will be set | |
4694 | * to the final 'target' values and we'll do this again to get the | |
4695 | * optimal watermarks. For gen9+ platforms, the values we program here | |
4696 | * will be the final target values which will get automatically latched | |
4697 | * at vblank time; no further programming will be necessary. | |
4698 | * | |
4699 | * If a platform hasn't been transitioned to atomic watermarks yet, | |
4700 | * we'll continue to update watermarks the old way, if flags tell | |
4701 | * us to. | |
4702 | */ | |
4703 | if (dev_priv->display.initial_watermarks != NULL) | |
4704 | dev_priv->display.initial_watermarks(pipe_config); | |
4705 | else if (pipe_config->update_wm_pre) | |
4706 | intel_update_watermarks(&crtc->base); | |
4707 | } | |
4708 | ||
4709 | static void intel_crtc_disable_planes(struct drm_crtc *crtc, unsigned plane_mask) | |
4710 | { | |
4711 | struct drm_device *dev = crtc->dev; | |
4712 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4713 | struct drm_plane *p; | |
4714 | int pipe = intel_crtc->pipe; | |
4715 | ||
4716 | intel_crtc_dpms_overlay_disable(intel_crtc); | |
4717 | ||
4718 | drm_for_each_plane_mask(p, dev, plane_mask) | |
4719 | to_intel_plane(p)->disable_plane(p, crtc); | |
4720 | ||
4721 | /* | |
4722 | * FIXME: Once we grow proper nuclear flip support out of this we need | |
4723 | * to compute the mask of flip planes precisely. For the time being | |
4724 | * consider this a flip to a NULL plane. | |
4725 | */ | |
4726 | intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe)); | |
4727 | } | |
4728 | ||
4729 | static void ironlake_crtc_enable(struct drm_crtc *crtc) | |
4730 | { | |
4731 | struct drm_device *dev = crtc->dev; | |
4732 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4733 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4734 | struct intel_encoder *encoder; | |
4735 | int pipe = intel_crtc->pipe; | |
4736 | struct intel_crtc_state *pipe_config = | |
4737 | to_intel_crtc_state(crtc->state); | |
4738 | ||
4739 | if (WARN_ON(intel_crtc->active)) | |
4740 | return; | |
4741 | ||
4742 | /* | |
4743 | * Sometimes spurious CPU pipe underruns happen during FDI | |
4744 | * training, at least with VGA+HDMI cloning. Suppress them. | |
4745 | * | |
4746 | * On ILK we get an occasional spurious CPU pipe underruns | |
4747 | * between eDP port A enable and vdd enable. Also PCH port | |
4748 | * enable seems to result in the occasional CPU pipe underrun. | |
4749 | * | |
4750 | * Spurious PCH underruns also occur during PCH enabling. | |
4751 | */ | |
4752 | if (intel_crtc->config->has_pch_encoder || IS_GEN5(dev_priv)) | |
4753 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false); | |
4754 | if (intel_crtc->config->has_pch_encoder) | |
4755 | intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false); | |
4756 | ||
4757 | if (intel_crtc->config->has_pch_encoder) | |
4758 | intel_prepare_shared_dpll(intel_crtc); | |
4759 | ||
4760 | if (intel_crtc->config->has_dp_encoder) | |
4761 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
4762 | ||
4763 | intel_set_pipe_timings(intel_crtc); | |
4764 | intel_set_pipe_src_size(intel_crtc); | |
4765 | ||
4766 | if (intel_crtc->config->has_pch_encoder) { | |
4767 | intel_cpu_transcoder_set_m_n(intel_crtc, | |
4768 | &intel_crtc->config->fdi_m_n, NULL); | |
4769 | } | |
4770 | ||
4771 | ironlake_set_pipeconf(crtc); | |
4772 | ||
4773 | intel_crtc->active = true; | |
4774 | ||
4775 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
4776 | if (encoder->pre_enable) | |
4777 | encoder->pre_enable(encoder); | |
4778 | ||
4779 | if (intel_crtc->config->has_pch_encoder) { | |
4780 | /* Note: FDI PLL enabling _must_ be done before we enable the | |
4781 | * cpu pipes, hence this is separate from all the other fdi/pch | |
4782 | * enabling. */ | |
4783 | ironlake_fdi_pll_enable(intel_crtc); | |
4784 | } else { | |
4785 | assert_fdi_tx_disabled(dev_priv, pipe); | |
4786 | assert_fdi_rx_disabled(dev_priv, pipe); | |
4787 | } | |
4788 | ||
4789 | ironlake_pfit_enable(intel_crtc); | |
4790 | ||
4791 | /* | |
4792 | * On ILK+ LUT must be loaded before the pipe is running but with | |
4793 | * clocks enabled | |
4794 | */ | |
4795 | intel_color_load_luts(&pipe_config->base); | |
4796 | ||
4797 | if (dev_priv->display.initial_watermarks != NULL) | |
4798 | dev_priv->display.initial_watermarks(intel_crtc->config); | |
4799 | intel_enable_pipe(intel_crtc); | |
4800 | ||
4801 | if (intel_crtc->config->has_pch_encoder) | |
4802 | ironlake_pch_enable(crtc); | |
4803 | ||
4804 | assert_vblank_disabled(crtc); | |
4805 | drm_crtc_vblank_on(crtc); | |
4806 | ||
4807 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
4808 | encoder->enable(encoder); | |
4809 | ||
4810 | if (HAS_PCH_CPT(dev)) | |
4811 | cpt_verify_modeset(dev, intel_crtc->pipe); | |
4812 | ||
4813 | /* Must wait for vblank to avoid spurious PCH FIFO underruns */ | |
4814 | if (intel_crtc->config->has_pch_encoder) | |
4815 | intel_wait_for_vblank(dev, pipe); | |
4816 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
4817 | intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true); | |
4818 | } | |
4819 | ||
4820 | /* IPS only exists on ULT machines and is tied to pipe A. */ | |
4821 | static bool hsw_crtc_supports_ips(struct intel_crtc *crtc) | |
4822 | { | |
4823 | return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A; | |
4824 | } | |
4825 | ||
4826 | static void haswell_crtc_enable(struct drm_crtc *crtc) | |
4827 | { | |
4828 | struct drm_device *dev = crtc->dev; | |
4829 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4830 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4831 | struct intel_encoder *encoder; | |
4832 | int pipe = intel_crtc->pipe, hsw_workaround_pipe; | |
4833 | enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder; | |
4834 | struct intel_crtc_state *pipe_config = | |
4835 | to_intel_crtc_state(crtc->state); | |
4836 | ||
4837 | if (WARN_ON(intel_crtc->active)) | |
4838 | return; | |
4839 | ||
4840 | if (intel_crtc->config->has_pch_encoder) | |
4841 | intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, | |
4842 | false); | |
4843 | ||
4844 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
4845 | if (encoder->pre_pll_enable) | |
4846 | encoder->pre_pll_enable(encoder); | |
4847 | ||
4848 | if (intel_crtc->config->shared_dpll) | |
4849 | intel_enable_shared_dpll(intel_crtc); | |
4850 | ||
4851 | if (intel_crtc->config->has_dp_encoder) | |
4852 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
4853 | ||
4854 | if (!intel_crtc->config->has_dsi_encoder) | |
4855 | intel_set_pipe_timings(intel_crtc); | |
4856 | ||
4857 | intel_set_pipe_src_size(intel_crtc); | |
4858 | ||
4859 | if (cpu_transcoder != TRANSCODER_EDP && | |
4860 | !transcoder_is_dsi(cpu_transcoder)) { | |
4861 | I915_WRITE(PIPE_MULT(cpu_transcoder), | |
4862 | intel_crtc->config->pixel_multiplier - 1); | |
4863 | } | |
4864 | ||
4865 | if (intel_crtc->config->has_pch_encoder) { | |
4866 | intel_cpu_transcoder_set_m_n(intel_crtc, | |
4867 | &intel_crtc->config->fdi_m_n, NULL); | |
4868 | } | |
4869 | ||
4870 | if (!intel_crtc->config->has_dsi_encoder) | |
4871 | haswell_set_pipeconf(crtc); | |
4872 | ||
4873 | haswell_set_pipemisc(crtc); | |
4874 | ||
4875 | intel_color_set_csc(&pipe_config->base); | |
4876 | ||
4877 | intel_crtc->active = true; | |
4878 | ||
4879 | if (intel_crtc->config->has_pch_encoder) | |
4880 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false); | |
4881 | else | |
4882 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
4883 | ||
4884 | for_each_encoder_on_crtc(dev, crtc, encoder) { | |
4885 | if (encoder->pre_enable) | |
4886 | encoder->pre_enable(encoder); | |
4887 | } | |
4888 | ||
4889 | if (intel_crtc->config->has_pch_encoder) | |
4890 | dev_priv->display.fdi_link_train(crtc); | |
4891 | ||
4892 | if (!intel_crtc->config->has_dsi_encoder) | |
4893 | intel_ddi_enable_pipe_clock(intel_crtc); | |
4894 | ||
4895 | if (INTEL_INFO(dev)->gen >= 9) | |
4896 | skylake_pfit_enable(intel_crtc); | |
4897 | else | |
4898 | ironlake_pfit_enable(intel_crtc); | |
4899 | ||
4900 | /* | |
4901 | * On ILK+ LUT must be loaded before the pipe is running but with | |
4902 | * clocks enabled | |
4903 | */ | |
4904 | intel_color_load_luts(&pipe_config->base); | |
4905 | ||
4906 | intel_ddi_set_pipe_settings(crtc); | |
4907 | if (!intel_crtc->config->has_dsi_encoder) | |
4908 | intel_ddi_enable_transcoder_func(crtc); | |
4909 | ||
4910 | if (dev_priv->display.initial_watermarks != NULL) | |
4911 | dev_priv->display.initial_watermarks(pipe_config); | |
4912 | else | |
4913 | intel_update_watermarks(crtc); | |
4914 | ||
4915 | /* XXX: Do the pipe assertions at the right place for BXT DSI. */ | |
4916 | if (!intel_crtc->config->has_dsi_encoder) | |
4917 | intel_enable_pipe(intel_crtc); | |
4918 | ||
4919 | if (intel_crtc->config->has_pch_encoder) | |
4920 | lpt_pch_enable(crtc); | |
4921 | ||
4922 | if (intel_crtc->config->dp_encoder_is_mst) | |
4923 | intel_ddi_set_vc_payload_alloc(crtc, true); | |
4924 | ||
4925 | assert_vblank_disabled(crtc); | |
4926 | drm_crtc_vblank_on(crtc); | |
4927 | ||
4928 | for_each_encoder_on_crtc(dev, crtc, encoder) { | |
4929 | encoder->enable(encoder); | |
4930 | intel_opregion_notify_encoder(encoder, true); | |
4931 | } | |
4932 | ||
4933 | if (intel_crtc->config->has_pch_encoder) { | |
4934 | intel_wait_for_vblank(dev, pipe); | |
4935 | intel_wait_for_vblank(dev, pipe); | |
4936 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
4937 | intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, | |
4938 | true); | |
4939 | } | |
4940 | ||
4941 | /* If we change the relative order between pipe/planes enabling, we need | |
4942 | * to change the workaround. */ | |
4943 | hsw_workaround_pipe = pipe_config->hsw_workaround_pipe; | |
4944 | if (IS_HASWELL(dev) && hsw_workaround_pipe != INVALID_PIPE) { | |
4945 | intel_wait_for_vblank(dev, hsw_workaround_pipe); | |
4946 | intel_wait_for_vblank(dev, hsw_workaround_pipe); | |
4947 | } | |
4948 | } | |
4949 | ||
4950 | static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force) | |
4951 | { | |
4952 | struct drm_device *dev = crtc->base.dev; | |
4953 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4954 | int pipe = crtc->pipe; | |
4955 | ||
4956 | /* To avoid upsetting the power well on haswell only disable the pfit if | |
4957 | * it's in use. The hw state code will make sure we get this right. */ | |
4958 | if (force || crtc->config->pch_pfit.enabled) { | |
4959 | I915_WRITE(PF_CTL(pipe), 0); | |
4960 | I915_WRITE(PF_WIN_POS(pipe), 0); | |
4961 | I915_WRITE(PF_WIN_SZ(pipe), 0); | |
4962 | } | |
4963 | } | |
4964 | ||
4965 | static void ironlake_crtc_disable(struct drm_crtc *crtc) | |
4966 | { | |
4967 | struct drm_device *dev = crtc->dev; | |
4968 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4969 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4970 | struct intel_encoder *encoder; | |
4971 | int pipe = intel_crtc->pipe; | |
4972 | ||
4973 | /* | |
4974 | * Sometimes spurious CPU pipe underruns happen when the | |
4975 | * pipe is already disabled, but FDI RX/TX is still enabled. | |
4976 | * Happens at least with VGA+HDMI cloning. Suppress them. | |
4977 | */ | |
4978 | if (intel_crtc->config->has_pch_encoder) { | |
4979 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false); | |
4980 | intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false); | |
4981 | } | |
4982 | ||
4983 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
4984 | encoder->disable(encoder); | |
4985 | ||
4986 | drm_crtc_vblank_off(crtc); | |
4987 | assert_vblank_disabled(crtc); | |
4988 | ||
4989 | intel_disable_pipe(intel_crtc); | |
4990 | ||
4991 | ironlake_pfit_disable(intel_crtc, false); | |
4992 | ||
4993 | if (intel_crtc->config->has_pch_encoder) | |
4994 | ironlake_fdi_disable(crtc); | |
4995 | ||
4996 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
4997 | if (encoder->post_disable) | |
4998 | encoder->post_disable(encoder); | |
4999 | ||
5000 | if (intel_crtc->config->has_pch_encoder) { | |
5001 | ironlake_disable_pch_transcoder(dev_priv, pipe); | |
5002 | ||
5003 | if (HAS_PCH_CPT(dev)) { | |
5004 | i915_reg_t reg; | |
5005 | u32 temp; | |
5006 | ||
5007 | /* disable TRANS_DP_CTL */ | |
5008 | reg = TRANS_DP_CTL(pipe); | |
5009 | temp = I915_READ(reg); | |
5010 | temp &= ~(TRANS_DP_OUTPUT_ENABLE | | |
5011 | TRANS_DP_PORT_SEL_MASK); | |
5012 | temp |= TRANS_DP_PORT_SEL_NONE; | |
5013 | I915_WRITE(reg, temp); | |
5014 | ||
5015 | /* disable DPLL_SEL */ | |
5016 | temp = I915_READ(PCH_DPLL_SEL); | |
5017 | temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe)); | |
5018 | I915_WRITE(PCH_DPLL_SEL, temp); | |
5019 | } | |
5020 | ||
5021 | ironlake_fdi_pll_disable(intel_crtc); | |
5022 | } | |
5023 | ||
5024 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
5025 | intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true); | |
5026 | } | |
5027 | ||
5028 | static void haswell_crtc_disable(struct drm_crtc *crtc) | |
5029 | { | |
5030 | struct drm_device *dev = crtc->dev; | |
5031 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5032 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5033 | struct intel_encoder *encoder; | |
5034 | enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder; | |
5035 | ||
5036 | if (intel_crtc->config->has_pch_encoder) | |
5037 | intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, | |
5038 | false); | |
5039 | ||
5040 | for_each_encoder_on_crtc(dev, crtc, encoder) { | |
5041 | intel_opregion_notify_encoder(encoder, false); | |
5042 | encoder->disable(encoder); | |
5043 | } | |
5044 | ||
5045 | drm_crtc_vblank_off(crtc); | |
5046 | assert_vblank_disabled(crtc); | |
5047 | ||
5048 | /* XXX: Do the pipe assertions at the right place for BXT DSI. */ | |
5049 | if (!intel_crtc->config->has_dsi_encoder) | |
5050 | intel_disable_pipe(intel_crtc); | |
5051 | ||
5052 | if (intel_crtc->config->dp_encoder_is_mst) | |
5053 | intel_ddi_set_vc_payload_alloc(crtc, false); | |
5054 | ||
5055 | if (!intel_crtc->config->has_dsi_encoder) | |
5056 | intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder); | |
5057 | ||
5058 | if (INTEL_INFO(dev)->gen >= 9) | |
5059 | skylake_scaler_disable(intel_crtc); | |
5060 | else | |
5061 | ironlake_pfit_disable(intel_crtc, false); | |
5062 | ||
5063 | if (!intel_crtc->config->has_dsi_encoder) | |
5064 | intel_ddi_disable_pipe_clock(intel_crtc); | |
5065 | ||
5066 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
5067 | if (encoder->post_disable) | |
5068 | encoder->post_disable(encoder); | |
5069 | ||
5070 | if (intel_crtc->config->has_pch_encoder) { | |
5071 | lpt_disable_pch_transcoder(dev_priv); | |
5072 | lpt_disable_iclkip(dev_priv); | |
5073 | intel_ddi_fdi_disable(crtc); | |
5074 | ||
5075 | intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, | |
5076 | true); | |
5077 | } | |
5078 | } | |
5079 | ||
5080 | static void i9xx_pfit_enable(struct intel_crtc *crtc) | |
5081 | { | |
5082 | struct drm_device *dev = crtc->base.dev; | |
5083 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5084 | struct intel_crtc_state *pipe_config = crtc->config; | |
5085 | ||
5086 | if (!pipe_config->gmch_pfit.control) | |
5087 | return; | |
5088 | ||
5089 | /* | |
5090 | * The panel fitter should only be adjusted whilst the pipe is disabled, | |
5091 | * according to register description and PRM. | |
5092 | */ | |
5093 | WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE); | |
5094 | assert_pipe_disabled(dev_priv, crtc->pipe); | |
5095 | ||
5096 | I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios); | |
5097 | I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control); | |
5098 | ||
5099 | /* Border color in case we don't scale up to the full screen. Black by | |
5100 | * default, change to something else for debugging. */ | |
5101 | I915_WRITE(BCLRPAT(crtc->pipe), 0); | |
5102 | } | |
5103 | ||
5104 | static enum intel_display_power_domain port_to_power_domain(enum port port) | |
5105 | { | |
5106 | switch (port) { | |
5107 | case PORT_A: | |
5108 | return POWER_DOMAIN_PORT_DDI_A_LANES; | |
5109 | case PORT_B: | |
5110 | return POWER_DOMAIN_PORT_DDI_B_LANES; | |
5111 | case PORT_C: | |
5112 | return POWER_DOMAIN_PORT_DDI_C_LANES; | |
5113 | case PORT_D: | |
5114 | return POWER_DOMAIN_PORT_DDI_D_LANES; | |
5115 | case PORT_E: | |
5116 | return POWER_DOMAIN_PORT_DDI_E_LANES; | |
5117 | default: | |
5118 | MISSING_CASE(port); | |
5119 | return POWER_DOMAIN_PORT_OTHER; | |
5120 | } | |
5121 | } | |
5122 | ||
5123 | static enum intel_display_power_domain port_to_aux_power_domain(enum port port) | |
5124 | { | |
5125 | switch (port) { | |
5126 | case PORT_A: | |
5127 | return POWER_DOMAIN_AUX_A; | |
5128 | case PORT_B: | |
5129 | return POWER_DOMAIN_AUX_B; | |
5130 | case PORT_C: | |
5131 | return POWER_DOMAIN_AUX_C; | |
5132 | case PORT_D: | |
5133 | return POWER_DOMAIN_AUX_D; | |
5134 | case PORT_E: | |
5135 | /* FIXME: Check VBT for actual wiring of PORT E */ | |
5136 | return POWER_DOMAIN_AUX_D; | |
5137 | default: | |
5138 | MISSING_CASE(port); | |
5139 | return POWER_DOMAIN_AUX_A; | |
5140 | } | |
5141 | } | |
5142 | ||
5143 | enum intel_display_power_domain | |
5144 | intel_display_port_power_domain(struct intel_encoder *intel_encoder) | |
5145 | { | |
5146 | struct drm_device *dev = intel_encoder->base.dev; | |
5147 | struct intel_digital_port *intel_dig_port; | |
5148 | ||
5149 | switch (intel_encoder->type) { | |
5150 | case INTEL_OUTPUT_UNKNOWN: | |
5151 | /* Only DDI platforms should ever use this output type */ | |
5152 | WARN_ON_ONCE(!HAS_DDI(dev)); | |
5153 | case INTEL_OUTPUT_DISPLAYPORT: | |
5154 | case INTEL_OUTPUT_HDMI: | |
5155 | case INTEL_OUTPUT_EDP: | |
5156 | intel_dig_port = enc_to_dig_port(&intel_encoder->base); | |
5157 | return port_to_power_domain(intel_dig_port->port); | |
5158 | case INTEL_OUTPUT_DP_MST: | |
5159 | intel_dig_port = enc_to_mst(&intel_encoder->base)->primary; | |
5160 | return port_to_power_domain(intel_dig_port->port); | |
5161 | case INTEL_OUTPUT_ANALOG: | |
5162 | return POWER_DOMAIN_PORT_CRT; | |
5163 | case INTEL_OUTPUT_DSI: | |
5164 | return POWER_DOMAIN_PORT_DSI; | |
5165 | default: | |
5166 | return POWER_DOMAIN_PORT_OTHER; | |
5167 | } | |
5168 | } | |
5169 | ||
5170 | enum intel_display_power_domain | |
5171 | intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder) | |
5172 | { | |
5173 | struct drm_device *dev = intel_encoder->base.dev; | |
5174 | struct intel_digital_port *intel_dig_port; | |
5175 | ||
5176 | switch (intel_encoder->type) { | |
5177 | case INTEL_OUTPUT_UNKNOWN: | |
5178 | case INTEL_OUTPUT_HDMI: | |
5179 | /* | |
5180 | * Only DDI platforms should ever use these output types. | |
5181 | * We can get here after the HDMI detect code has already set | |
5182 | * the type of the shared encoder. Since we can't be sure | |
5183 | * what's the status of the given connectors, play safe and | |
5184 | * run the DP detection too. | |
5185 | */ | |
5186 | WARN_ON_ONCE(!HAS_DDI(dev)); | |
5187 | case INTEL_OUTPUT_DISPLAYPORT: | |
5188 | case INTEL_OUTPUT_EDP: | |
5189 | intel_dig_port = enc_to_dig_port(&intel_encoder->base); | |
5190 | return port_to_aux_power_domain(intel_dig_port->port); | |
5191 | case INTEL_OUTPUT_DP_MST: | |
5192 | intel_dig_port = enc_to_mst(&intel_encoder->base)->primary; | |
5193 | return port_to_aux_power_domain(intel_dig_port->port); | |
5194 | default: | |
5195 | MISSING_CASE(intel_encoder->type); | |
5196 | return POWER_DOMAIN_AUX_A; | |
5197 | } | |
5198 | } | |
5199 | ||
5200 | static unsigned long get_crtc_power_domains(struct drm_crtc *crtc, | |
5201 | struct intel_crtc_state *crtc_state) | |
5202 | { | |
5203 | struct drm_device *dev = crtc->dev; | |
5204 | struct drm_encoder *encoder; | |
5205 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5206 | enum pipe pipe = intel_crtc->pipe; | |
5207 | unsigned long mask; | |
5208 | enum transcoder transcoder = crtc_state->cpu_transcoder; | |
5209 | ||
5210 | if (!crtc_state->base.active) | |
5211 | return 0; | |
5212 | ||
5213 | mask = BIT(POWER_DOMAIN_PIPE(pipe)); | |
5214 | mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder)); | |
5215 | if (crtc_state->pch_pfit.enabled || | |
5216 | crtc_state->pch_pfit.force_thru) | |
5217 | mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe)); | |
5218 | ||
5219 | drm_for_each_encoder_mask(encoder, dev, crtc_state->base.encoder_mask) { | |
5220 | struct intel_encoder *intel_encoder = to_intel_encoder(encoder); | |
5221 | ||
5222 | mask |= BIT(intel_display_port_power_domain(intel_encoder)); | |
5223 | } | |
5224 | ||
5225 | if (crtc_state->shared_dpll) | |
5226 | mask |= BIT(POWER_DOMAIN_PLLS); | |
5227 | ||
5228 | return mask; | |
5229 | } | |
5230 | ||
5231 | static unsigned long | |
5232 | modeset_get_crtc_power_domains(struct drm_crtc *crtc, | |
5233 | struct intel_crtc_state *crtc_state) | |
5234 | { | |
5235 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
5236 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5237 | enum intel_display_power_domain domain; | |
5238 | unsigned long domains, new_domains, old_domains; | |
5239 | ||
5240 | old_domains = intel_crtc->enabled_power_domains; | |
5241 | intel_crtc->enabled_power_domains = new_domains = | |
5242 | get_crtc_power_domains(crtc, crtc_state); | |
5243 | ||
5244 | domains = new_domains & ~old_domains; | |
5245 | ||
5246 | for_each_power_domain(domain, domains) | |
5247 | intel_display_power_get(dev_priv, domain); | |
5248 | ||
5249 | return old_domains & ~new_domains; | |
5250 | } | |
5251 | ||
5252 | static void modeset_put_power_domains(struct drm_i915_private *dev_priv, | |
5253 | unsigned long domains) | |
5254 | { | |
5255 | enum intel_display_power_domain domain; | |
5256 | ||
5257 | for_each_power_domain(domain, domains) | |
5258 | intel_display_power_put(dev_priv, domain); | |
5259 | } | |
5260 | ||
5261 | static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv) | |
5262 | { | |
5263 | int max_cdclk_freq = dev_priv->max_cdclk_freq; | |
5264 | ||
5265 | if (INTEL_INFO(dev_priv)->gen >= 9 || | |
5266 | IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) | |
5267 | return max_cdclk_freq; | |
5268 | else if (IS_CHERRYVIEW(dev_priv)) | |
5269 | return max_cdclk_freq*95/100; | |
5270 | else if (INTEL_INFO(dev_priv)->gen < 4) | |
5271 | return 2*max_cdclk_freq*90/100; | |
5272 | else | |
5273 | return max_cdclk_freq*90/100; | |
5274 | } | |
5275 | ||
5276 | static int skl_calc_cdclk(int max_pixclk, int vco); | |
5277 | ||
5278 | static void intel_update_max_cdclk(struct drm_device *dev) | |
5279 | { | |
5280 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5281 | ||
5282 | if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { | |
5283 | u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK; | |
5284 | int max_cdclk, vco; | |
5285 | ||
5286 | vco = dev_priv->skl_preferred_vco_freq; | |
5287 | WARN_ON(vco != 8100000 && vco != 8640000); | |
5288 | ||
5289 | /* | |
5290 | * Use the lower (vco 8640) cdclk values as a | |
5291 | * first guess. skl_calc_cdclk() will correct it | |
5292 | * if the preferred vco is 8100 instead. | |
5293 | */ | |
5294 | if (limit == SKL_DFSM_CDCLK_LIMIT_675) | |
5295 | max_cdclk = 617143; | |
5296 | else if (limit == SKL_DFSM_CDCLK_LIMIT_540) | |
5297 | max_cdclk = 540000; | |
5298 | else if (limit == SKL_DFSM_CDCLK_LIMIT_450) | |
5299 | max_cdclk = 432000; | |
5300 | else | |
5301 | max_cdclk = 308571; | |
5302 | ||
5303 | dev_priv->max_cdclk_freq = skl_calc_cdclk(max_cdclk, vco); | |
5304 | } else if (IS_BROXTON(dev)) { | |
5305 | dev_priv->max_cdclk_freq = 624000; | |
5306 | } else if (IS_BROADWELL(dev)) { | |
5307 | /* | |
5308 | * FIXME with extra cooling we can allow | |
5309 | * 540 MHz for ULX and 675 Mhz for ULT. | |
5310 | * How can we know if extra cooling is | |
5311 | * available? PCI ID, VTB, something else? | |
5312 | */ | |
5313 | if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) | |
5314 | dev_priv->max_cdclk_freq = 450000; | |
5315 | else if (IS_BDW_ULX(dev)) | |
5316 | dev_priv->max_cdclk_freq = 450000; | |
5317 | else if (IS_BDW_ULT(dev)) | |
5318 | dev_priv->max_cdclk_freq = 540000; | |
5319 | else | |
5320 | dev_priv->max_cdclk_freq = 675000; | |
5321 | } else if (IS_CHERRYVIEW(dev)) { | |
5322 | dev_priv->max_cdclk_freq = 320000; | |
5323 | } else if (IS_VALLEYVIEW(dev)) { | |
5324 | dev_priv->max_cdclk_freq = 400000; | |
5325 | } else { | |
5326 | /* otherwise assume cdclk is fixed */ | |
5327 | dev_priv->max_cdclk_freq = dev_priv->cdclk_freq; | |
5328 | } | |
5329 | ||
5330 | dev_priv->max_dotclk_freq = intel_compute_max_dotclk(dev_priv); | |
5331 | ||
5332 | DRM_DEBUG_DRIVER("Max CD clock rate: %d kHz\n", | |
5333 | dev_priv->max_cdclk_freq); | |
5334 | ||
5335 | DRM_DEBUG_DRIVER("Max dotclock rate: %d kHz\n", | |
5336 | dev_priv->max_dotclk_freq); | |
5337 | } | |
5338 | ||
5339 | static void intel_update_cdclk(struct drm_device *dev) | |
5340 | { | |
5341 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5342 | ||
5343 | dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev); | |
5344 | ||
5345 | if (INTEL_GEN(dev_priv) >= 9) | |
5346 | DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz, VCO: %d kHz, ref: %d kHz\n", | |
5347 | dev_priv->cdclk_freq, dev_priv->cdclk_pll.vco, | |
5348 | dev_priv->cdclk_pll.ref); | |
5349 | else | |
5350 | DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n", | |
5351 | dev_priv->cdclk_freq); | |
5352 | ||
5353 | /* | |
5354 | * 9:0 CMBUS [sic] CDCLK frequency (cdfreq): | |
5355 | * Programmng [sic] note: bit[9:2] should be programmed to the number | |
5356 | * of cdclk that generates 4MHz reference clock freq which is used to | |
5357 | * generate GMBus clock. This will vary with the cdclk freq. | |
5358 | */ | |
5359 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
5360 | I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000)); | |
5361 | } | |
5362 | ||
5363 | /* convert from kHz to .1 fixpoint MHz with -1MHz offset */ | |
5364 | static int skl_cdclk_decimal(int cdclk) | |
5365 | { | |
5366 | return DIV_ROUND_CLOSEST(cdclk - 1000, 500); | |
5367 | } | |
5368 | ||
5369 | static int bxt_de_pll_vco(struct drm_i915_private *dev_priv, int cdclk) | |
5370 | { | |
5371 | int ratio; | |
5372 | ||
5373 | if (cdclk == dev_priv->cdclk_pll.ref) | |
5374 | return 0; | |
5375 | ||
5376 | switch (cdclk) { | |
5377 | default: | |
5378 | MISSING_CASE(cdclk); | |
5379 | case 144000: | |
5380 | case 288000: | |
5381 | case 384000: | |
5382 | case 576000: | |
5383 | ratio = 60; | |
5384 | break; | |
5385 | case 624000: | |
5386 | ratio = 65; | |
5387 | break; | |
5388 | } | |
5389 | ||
5390 | return dev_priv->cdclk_pll.ref * ratio; | |
5391 | } | |
5392 | ||
5393 | static void bxt_de_pll_disable(struct drm_i915_private *dev_priv) | |
5394 | { | |
5395 | I915_WRITE(BXT_DE_PLL_ENABLE, 0); | |
5396 | ||
5397 | /* Timeout 200us */ | |
5398 | if (wait_for((I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK) == 0, 1)) | |
5399 | DRM_ERROR("timeout waiting for DE PLL unlock\n"); | |
5400 | ||
5401 | dev_priv->cdclk_pll.vco = 0; | |
5402 | } | |
5403 | ||
5404 | static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco) | |
5405 | { | |
5406 | int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->cdclk_pll.ref); | |
5407 | u32 val; | |
5408 | ||
5409 | val = I915_READ(BXT_DE_PLL_CTL); | |
5410 | val &= ~BXT_DE_PLL_RATIO_MASK; | |
5411 | val |= BXT_DE_PLL_RATIO(ratio); | |
5412 | I915_WRITE(BXT_DE_PLL_CTL, val); | |
5413 | ||
5414 | I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE); | |
5415 | ||
5416 | /* Timeout 200us */ | |
5417 | if (wait_for((I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK) != 0, 1)) | |
5418 | DRM_ERROR("timeout waiting for DE PLL lock\n"); | |
5419 | ||
5420 | dev_priv->cdclk_pll.vco = vco; | |
5421 | } | |
5422 | ||
5423 | static void bxt_set_cdclk(struct drm_i915_private *dev_priv, int cdclk) | |
5424 | { | |
5425 | u32 val, divider; | |
5426 | int vco, ret; | |
5427 | ||
5428 | vco = bxt_de_pll_vco(dev_priv, cdclk); | |
5429 | ||
5430 | DRM_DEBUG_DRIVER("Changing CDCLK to %d kHz (VCO %d kHz)\n", cdclk, vco); | |
5431 | ||
5432 | /* cdclk = vco / 2 / div{1,1.5,2,4} */ | |
5433 | switch (DIV_ROUND_CLOSEST(vco, cdclk)) { | |
5434 | case 8: | |
5435 | divider = BXT_CDCLK_CD2X_DIV_SEL_4; | |
5436 | break; | |
5437 | case 4: | |
5438 | divider = BXT_CDCLK_CD2X_DIV_SEL_2; | |
5439 | break; | |
5440 | case 3: | |
5441 | divider = BXT_CDCLK_CD2X_DIV_SEL_1_5; | |
5442 | break; | |
5443 | case 2: | |
5444 | divider = BXT_CDCLK_CD2X_DIV_SEL_1; | |
5445 | break; | |
5446 | default: | |
5447 | WARN_ON(cdclk != dev_priv->cdclk_pll.ref); | |
5448 | WARN_ON(vco != 0); | |
5449 | ||
5450 | divider = BXT_CDCLK_CD2X_DIV_SEL_1; | |
5451 | break; | |
5452 | } | |
5453 | ||
5454 | /* Inform power controller of upcoming frequency change */ | |
5455 | mutex_lock(&dev_priv->rps.hw_lock); | |
5456 | ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, | |
5457 | 0x80000000); | |
5458 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5459 | ||
5460 | if (ret) { | |
5461 | DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n", | |
5462 | ret, cdclk); | |
5463 | return; | |
5464 | } | |
5465 | ||
5466 | if (dev_priv->cdclk_pll.vco != 0 && | |
5467 | dev_priv->cdclk_pll.vco != vco) | |
5468 | bxt_de_pll_disable(dev_priv); | |
5469 | ||
5470 | if (dev_priv->cdclk_pll.vco != vco) | |
5471 | bxt_de_pll_enable(dev_priv, vco); | |
5472 | ||
5473 | val = divider | skl_cdclk_decimal(cdclk); | |
5474 | /* | |
5475 | * FIXME if only the cd2x divider needs changing, it could be done | |
5476 | * without shutting off the pipe (if only one pipe is active). | |
5477 | */ | |
5478 | val |= BXT_CDCLK_CD2X_PIPE_NONE; | |
5479 | /* | |
5480 | * Disable SSA Precharge when CD clock frequency < 500 MHz, | |
5481 | * enable otherwise. | |
5482 | */ | |
5483 | if (cdclk >= 500000) | |
5484 | val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE; | |
5485 | I915_WRITE(CDCLK_CTL, val); | |
5486 | ||
5487 | mutex_lock(&dev_priv->rps.hw_lock); | |
5488 | ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, | |
5489 | DIV_ROUND_UP(cdclk, 25000)); | |
5490 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5491 | ||
5492 | if (ret) { | |
5493 | DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n", | |
5494 | ret, cdclk); | |
5495 | return; | |
5496 | } | |
5497 | ||
5498 | intel_update_cdclk(dev_priv->dev); | |
5499 | } | |
5500 | ||
5501 | static void bxt_sanitize_cdclk(struct drm_i915_private *dev_priv) | |
5502 | { | |
5503 | u32 cdctl, expected; | |
5504 | ||
5505 | intel_update_cdclk(dev_priv->dev); | |
5506 | ||
5507 | if (dev_priv->cdclk_pll.vco == 0 || | |
5508 | dev_priv->cdclk_freq == dev_priv->cdclk_pll.ref) | |
5509 | goto sanitize; | |
5510 | ||
5511 | /* DPLL okay; verify the cdclock | |
5512 | * | |
5513 | * Some BIOS versions leave an incorrect decimal frequency value and | |
5514 | * set reserved MBZ bits in CDCLK_CTL at least during exiting from S4, | |
5515 | * so sanitize this register. | |
5516 | */ | |
5517 | cdctl = I915_READ(CDCLK_CTL); | |
5518 | /* | |
5519 | * Let's ignore the pipe field, since BIOS could have configured the | |
5520 | * dividers both synching to an active pipe, or asynchronously | |
5521 | * (PIPE_NONE). | |
5522 | */ | |
5523 | cdctl &= ~BXT_CDCLK_CD2X_PIPE_NONE; | |
5524 | ||
5525 | expected = (cdctl & BXT_CDCLK_CD2X_DIV_SEL_MASK) | | |
5526 | skl_cdclk_decimal(dev_priv->cdclk_freq); | |
5527 | /* | |
5528 | * Disable SSA Precharge when CD clock frequency < 500 MHz, | |
5529 | * enable otherwise. | |
5530 | */ | |
5531 | if (dev_priv->cdclk_freq >= 500000) | |
5532 | expected |= BXT_CDCLK_SSA_PRECHARGE_ENABLE; | |
5533 | ||
5534 | if (cdctl == expected) | |
5535 | /* All well; nothing to sanitize */ | |
5536 | return; | |
5537 | ||
5538 | sanitize: | |
5539 | DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n"); | |
5540 | ||
5541 | /* force cdclk programming */ | |
5542 | dev_priv->cdclk_freq = 0; | |
5543 | ||
5544 | /* force full PLL disable + enable */ | |
5545 | dev_priv->cdclk_pll.vco = -1; | |
5546 | } | |
5547 | ||
5548 | void bxt_init_cdclk(struct drm_i915_private *dev_priv) | |
5549 | { | |
5550 | bxt_sanitize_cdclk(dev_priv); | |
5551 | ||
5552 | if (dev_priv->cdclk_freq != 0 && dev_priv->cdclk_pll.vco != 0) | |
5553 | return; | |
5554 | ||
5555 | /* | |
5556 | * FIXME: | |
5557 | * - The initial CDCLK needs to be read from VBT. | |
5558 | * Need to make this change after VBT has changes for BXT. | |
5559 | */ | |
5560 | bxt_set_cdclk(dev_priv, bxt_calc_cdclk(0)); | |
5561 | } | |
5562 | ||
5563 | void bxt_uninit_cdclk(struct drm_i915_private *dev_priv) | |
5564 | { | |
5565 | bxt_set_cdclk(dev_priv, dev_priv->cdclk_pll.ref); | |
5566 | } | |
5567 | ||
5568 | static int skl_calc_cdclk(int max_pixclk, int vco) | |
5569 | { | |
5570 | if (vco == 8640000) { | |
5571 | if (max_pixclk > 540000) | |
5572 | return 617143; | |
5573 | else if (max_pixclk > 432000) | |
5574 | return 540000; | |
5575 | else if (max_pixclk > 308571) | |
5576 | return 432000; | |
5577 | else | |
5578 | return 308571; | |
5579 | } else { | |
5580 | if (max_pixclk > 540000) | |
5581 | return 675000; | |
5582 | else if (max_pixclk > 450000) | |
5583 | return 540000; | |
5584 | else if (max_pixclk > 337500) | |
5585 | return 450000; | |
5586 | else | |
5587 | return 337500; | |
5588 | } | |
5589 | } | |
5590 | ||
5591 | static void | |
5592 | skl_dpll0_update(struct drm_i915_private *dev_priv) | |
5593 | { | |
5594 | u32 val; | |
5595 | ||
5596 | dev_priv->cdclk_pll.ref = 24000; | |
5597 | dev_priv->cdclk_pll.vco = 0; | |
5598 | ||
5599 | val = I915_READ(LCPLL1_CTL); | |
5600 | if ((val & LCPLL_PLL_ENABLE) == 0) | |
5601 | return; | |
5602 | ||
5603 | if (WARN_ON((val & LCPLL_PLL_LOCK) == 0)) | |
5604 | return; | |
5605 | ||
5606 | val = I915_READ(DPLL_CTRL1); | |
5607 | ||
5608 | if (WARN_ON((val & (DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | | |
5609 | DPLL_CTRL1_SSC(SKL_DPLL0) | | |
5610 | DPLL_CTRL1_OVERRIDE(SKL_DPLL0))) != | |
5611 | DPLL_CTRL1_OVERRIDE(SKL_DPLL0))) | |
5612 | return; | |
5613 | ||
5614 | switch (val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) { | |
5615 | case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, SKL_DPLL0): | |
5616 | case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, SKL_DPLL0): | |
5617 | case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, SKL_DPLL0): | |
5618 | case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, SKL_DPLL0): | |
5619 | dev_priv->cdclk_pll.vco = 8100000; | |
5620 | break; | |
5621 | case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, SKL_DPLL0): | |
5622 | case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, SKL_DPLL0): | |
5623 | dev_priv->cdclk_pll.vco = 8640000; | |
5624 | break; | |
5625 | default: | |
5626 | MISSING_CASE(val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)); | |
5627 | break; | |
5628 | } | |
5629 | } | |
5630 | ||
5631 | void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv, int vco) | |
5632 | { | |
5633 | bool changed = dev_priv->skl_preferred_vco_freq != vco; | |
5634 | ||
5635 | dev_priv->skl_preferred_vco_freq = vco; | |
5636 | ||
5637 | if (changed) | |
5638 | intel_update_max_cdclk(dev_priv->dev); | |
5639 | } | |
5640 | ||
5641 | static void | |
5642 | skl_dpll0_enable(struct drm_i915_private *dev_priv, int vco) | |
5643 | { | |
5644 | int min_cdclk = skl_calc_cdclk(0, vco); | |
5645 | u32 val; | |
5646 | ||
5647 | WARN_ON(vco != 8100000 && vco != 8640000); | |
5648 | ||
5649 | /* select the minimum CDCLK before enabling DPLL 0 */ | |
5650 | val = CDCLK_FREQ_337_308 | skl_cdclk_decimal(min_cdclk); | |
5651 | I915_WRITE(CDCLK_CTL, val); | |
5652 | POSTING_READ(CDCLK_CTL); | |
5653 | ||
5654 | /* | |
5655 | * We always enable DPLL0 with the lowest link rate possible, but still | |
5656 | * taking into account the VCO required to operate the eDP panel at the | |
5657 | * desired frequency. The usual DP link rates operate with a VCO of | |
5658 | * 8100 while the eDP 1.4 alternate link rates need a VCO of 8640. | |
5659 | * The modeset code is responsible for the selection of the exact link | |
5660 | * rate later on, with the constraint of choosing a frequency that | |
5661 | * works with vco. | |
5662 | */ | |
5663 | val = I915_READ(DPLL_CTRL1); | |
5664 | ||
5665 | val &= ~(DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | DPLL_CTRL1_SSC(SKL_DPLL0) | | |
5666 | DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)); | |
5667 | val |= DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
5668 | if (vco == 8640000) | |
5669 | val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, | |
5670 | SKL_DPLL0); | |
5671 | else | |
5672 | val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, | |
5673 | SKL_DPLL0); | |
5674 | ||
5675 | I915_WRITE(DPLL_CTRL1, val); | |
5676 | POSTING_READ(DPLL_CTRL1); | |
5677 | ||
5678 | I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE); | |
5679 | ||
5680 | if (wait_for(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK, 5)) | |
5681 | DRM_ERROR("DPLL0 not locked\n"); | |
5682 | ||
5683 | dev_priv->cdclk_pll.vco = vco; | |
5684 | ||
5685 | /* We'll want to keep using the current vco from now on. */ | |
5686 | skl_set_preferred_cdclk_vco(dev_priv, vco); | |
5687 | } | |
5688 | ||
5689 | static void | |
5690 | skl_dpll0_disable(struct drm_i915_private *dev_priv) | |
5691 | { | |
5692 | I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) & ~LCPLL_PLL_ENABLE); | |
5693 | if (wait_for(!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK), 1)) | |
5694 | DRM_ERROR("Couldn't disable DPLL0\n"); | |
5695 | ||
5696 | dev_priv->cdclk_pll.vco = 0; | |
5697 | } | |
5698 | ||
5699 | static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv) | |
5700 | { | |
5701 | int ret; | |
5702 | u32 val; | |
5703 | ||
5704 | /* inform PCU we want to change CDCLK */ | |
5705 | val = SKL_CDCLK_PREPARE_FOR_CHANGE; | |
5706 | mutex_lock(&dev_priv->rps.hw_lock); | |
5707 | ret = sandybridge_pcode_read(dev_priv, SKL_PCODE_CDCLK_CONTROL, &val); | |
5708 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5709 | ||
5710 | return ret == 0 && (val & SKL_CDCLK_READY_FOR_CHANGE); | |
5711 | } | |
5712 | ||
5713 | static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv) | |
5714 | { | |
5715 | unsigned int i; | |
5716 | ||
5717 | for (i = 0; i < 15; i++) { | |
5718 | if (skl_cdclk_pcu_ready(dev_priv)) | |
5719 | return true; | |
5720 | udelay(10); | |
5721 | } | |
5722 | ||
5723 | return false; | |
5724 | } | |
5725 | ||
5726 | static void skl_set_cdclk(struct drm_i915_private *dev_priv, int cdclk, int vco) | |
5727 | { | |
5728 | struct drm_device *dev = dev_priv->dev; | |
5729 | u32 freq_select, pcu_ack; | |
5730 | ||
5731 | WARN_ON((cdclk == 24000) != (vco == 0)); | |
5732 | ||
5733 | DRM_DEBUG_DRIVER("Changing CDCLK to %d kHz (VCO %d kHz)\n", cdclk, vco); | |
5734 | ||
5735 | if (!skl_cdclk_wait_for_pcu_ready(dev_priv)) { | |
5736 | DRM_ERROR("failed to inform PCU about cdclk change\n"); | |
5737 | return; | |
5738 | } | |
5739 | ||
5740 | /* set CDCLK_CTL */ | |
5741 | switch (cdclk) { | |
5742 | case 450000: | |
5743 | case 432000: | |
5744 | freq_select = CDCLK_FREQ_450_432; | |
5745 | pcu_ack = 1; | |
5746 | break; | |
5747 | case 540000: | |
5748 | freq_select = CDCLK_FREQ_540; | |
5749 | pcu_ack = 2; | |
5750 | break; | |
5751 | case 308571: | |
5752 | case 337500: | |
5753 | default: | |
5754 | freq_select = CDCLK_FREQ_337_308; | |
5755 | pcu_ack = 0; | |
5756 | break; | |
5757 | case 617143: | |
5758 | case 675000: | |
5759 | freq_select = CDCLK_FREQ_675_617; | |
5760 | pcu_ack = 3; | |
5761 | break; | |
5762 | } | |
5763 | ||
5764 | if (dev_priv->cdclk_pll.vco != 0 && | |
5765 | dev_priv->cdclk_pll.vco != vco) | |
5766 | skl_dpll0_disable(dev_priv); | |
5767 | ||
5768 | if (dev_priv->cdclk_pll.vco != vco) | |
5769 | skl_dpll0_enable(dev_priv, vco); | |
5770 | ||
5771 | I915_WRITE(CDCLK_CTL, freq_select | skl_cdclk_decimal(cdclk)); | |
5772 | POSTING_READ(CDCLK_CTL); | |
5773 | ||
5774 | /* inform PCU of the change */ | |
5775 | mutex_lock(&dev_priv->rps.hw_lock); | |
5776 | sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack); | |
5777 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5778 | ||
5779 | intel_update_cdclk(dev); | |
5780 | } | |
5781 | ||
5782 | static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv); | |
5783 | ||
5784 | void skl_uninit_cdclk(struct drm_i915_private *dev_priv) | |
5785 | { | |
5786 | skl_set_cdclk(dev_priv, dev_priv->cdclk_pll.ref, 0); | |
5787 | } | |
5788 | ||
5789 | void skl_init_cdclk(struct drm_i915_private *dev_priv) | |
5790 | { | |
5791 | int cdclk, vco; | |
5792 | ||
5793 | skl_sanitize_cdclk(dev_priv); | |
5794 | ||
5795 | if (dev_priv->cdclk_freq != 0 && dev_priv->cdclk_pll.vco != 0) { | |
5796 | /* | |
5797 | * Use the current vco as our initial | |
5798 | * guess as to what the preferred vco is. | |
5799 | */ | |
5800 | if (dev_priv->skl_preferred_vco_freq == 0) | |
5801 | skl_set_preferred_cdclk_vco(dev_priv, | |
5802 | dev_priv->cdclk_pll.vco); | |
5803 | return; | |
5804 | } | |
5805 | ||
5806 | vco = dev_priv->skl_preferred_vco_freq; | |
5807 | if (vco == 0) | |
5808 | vco = 8100000; | |
5809 | cdclk = skl_calc_cdclk(0, vco); | |
5810 | ||
5811 | skl_set_cdclk(dev_priv, cdclk, vco); | |
5812 | } | |
5813 | ||
5814 | static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv) | |
5815 | { | |
5816 | uint32_t cdctl, expected; | |
5817 | ||
5818 | /* | |
5819 | * check if the pre-os intialized the display | |
5820 | * There is SWF18 scratchpad register defined which is set by the | |
5821 | * pre-os which can be used by the OS drivers to check the status | |
5822 | */ | |
5823 | if ((I915_READ(SWF_ILK(0x18)) & 0x00FFFFFF) == 0) | |
5824 | goto sanitize; | |
5825 | ||
5826 | intel_update_cdclk(dev_priv->dev); | |
5827 | /* Is PLL enabled and locked ? */ | |
5828 | if (dev_priv->cdclk_pll.vco == 0 || | |
5829 | dev_priv->cdclk_freq == dev_priv->cdclk_pll.ref) | |
5830 | goto sanitize; | |
5831 | ||
5832 | /* DPLL okay; verify the cdclock | |
5833 | * | |
5834 | * Noticed in some instances that the freq selection is correct but | |
5835 | * decimal part is programmed wrong from BIOS where pre-os does not | |
5836 | * enable display. Verify the same as well. | |
5837 | */ | |
5838 | cdctl = I915_READ(CDCLK_CTL); | |
5839 | expected = (cdctl & CDCLK_FREQ_SEL_MASK) | | |
5840 | skl_cdclk_decimal(dev_priv->cdclk_freq); | |
5841 | if (cdctl == expected) | |
5842 | /* All well; nothing to sanitize */ | |
5843 | return; | |
5844 | ||
5845 | sanitize: | |
5846 | DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n"); | |
5847 | ||
5848 | /* force cdclk programming */ | |
5849 | dev_priv->cdclk_freq = 0; | |
5850 | /* force full PLL disable + enable */ | |
5851 | dev_priv->cdclk_pll.vco = -1; | |
5852 | } | |
5853 | ||
5854 | /* Adjust CDclk dividers to allow high res or save power if possible */ | |
5855 | static void valleyview_set_cdclk(struct drm_device *dev, int cdclk) | |
5856 | { | |
5857 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5858 | u32 val, cmd; | |
5859 | ||
5860 | WARN_ON(dev_priv->display.get_display_clock_speed(dev) | |
5861 | != dev_priv->cdclk_freq); | |
5862 | ||
5863 | if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */ | |
5864 | cmd = 2; | |
5865 | else if (cdclk == 266667) | |
5866 | cmd = 1; | |
5867 | else | |
5868 | cmd = 0; | |
5869 | ||
5870 | mutex_lock(&dev_priv->rps.hw_lock); | |
5871 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
5872 | val &= ~DSPFREQGUAR_MASK; | |
5873 | val |= (cmd << DSPFREQGUAR_SHIFT); | |
5874 | vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val); | |
5875 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & | |
5876 | DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT), | |
5877 | 50)) { | |
5878 | DRM_ERROR("timed out waiting for CDclk change\n"); | |
5879 | } | |
5880 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5881 | ||
5882 | mutex_lock(&dev_priv->sb_lock); | |
5883 | ||
5884 | if (cdclk == 400000) { | |
5885 | u32 divider; | |
5886 | ||
5887 | divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1; | |
5888 | ||
5889 | /* adjust cdclk divider */ | |
5890 | val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL); | |
5891 | val &= ~CCK_FREQUENCY_VALUES; | |
5892 | val |= divider; | |
5893 | vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val); | |
5894 | ||
5895 | if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) & | |
5896 | CCK_FREQUENCY_STATUS) == (divider << CCK_FREQUENCY_STATUS_SHIFT), | |
5897 | 50)) | |
5898 | DRM_ERROR("timed out waiting for CDclk change\n"); | |
5899 | } | |
5900 | ||
5901 | /* adjust self-refresh exit latency value */ | |
5902 | val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC); | |
5903 | val &= ~0x7f; | |
5904 | ||
5905 | /* | |
5906 | * For high bandwidth configs, we set a higher latency in the bunit | |
5907 | * so that the core display fetch happens in time to avoid underruns. | |
5908 | */ | |
5909 | if (cdclk == 400000) | |
5910 | val |= 4500 / 250; /* 4.5 usec */ | |
5911 | else | |
5912 | val |= 3000 / 250; /* 3.0 usec */ | |
5913 | vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val); | |
5914 | ||
5915 | mutex_unlock(&dev_priv->sb_lock); | |
5916 | ||
5917 | intel_update_cdclk(dev); | |
5918 | } | |
5919 | ||
5920 | static void cherryview_set_cdclk(struct drm_device *dev, int cdclk) | |
5921 | { | |
5922 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5923 | u32 val, cmd; | |
5924 | ||
5925 | WARN_ON(dev_priv->display.get_display_clock_speed(dev) | |
5926 | != dev_priv->cdclk_freq); | |
5927 | ||
5928 | switch (cdclk) { | |
5929 | case 333333: | |
5930 | case 320000: | |
5931 | case 266667: | |
5932 | case 200000: | |
5933 | break; | |
5934 | default: | |
5935 | MISSING_CASE(cdclk); | |
5936 | return; | |
5937 | } | |
5938 | ||
5939 | /* | |
5940 | * Specs are full of misinformation, but testing on actual | |
5941 | * hardware has shown that we just need to write the desired | |
5942 | * CCK divider into the Punit register. | |
5943 | */ | |
5944 | cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1; | |
5945 | ||
5946 | mutex_lock(&dev_priv->rps.hw_lock); | |
5947 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
5948 | val &= ~DSPFREQGUAR_MASK_CHV; | |
5949 | val |= (cmd << DSPFREQGUAR_SHIFT_CHV); | |
5950 | vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val); | |
5951 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & | |
5952 | DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV), | |
5953 | 50)) { | |
5954 | DRM_ERROR("timed out waiting for CDclk change\n"); | |
5955 | } | |
5956 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5957 | ||
5958 | intel_update_cdclk(dev); | |
5959 | } | |
5960 | ||
5961 | static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv, | |
5962 | int max_pixclk) | |
5963 | { | |
5964 | int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000; | |
5965 | int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90; | |
5966 | ||
5967 | /* | |
5968 | * Really only a few cases to deal with, as only 4 CDclks are supported: | |
5969 | * 200MHz | |
5970 | * 267MHz | |
5971 | * 320/333MHz (depends on HPLL freq) | |
5972 | * 400MHz (VLV only) | |
5973 | * So we check to see whether we're above 90% (VLV) or 95% (CHV) | |
5974 | * of the lower bin and adjust if needed. | |
5975 | * | |
5976 | * We seem to get an unstable or solid color picture at 200MHz. | |
5977 | * Not sure what's wrong. For now use 200MHz only when all pipes | |
5978 | * are off. | |
5979 | */ | |
5980 | if (!IS_CHERRYVIEW(dev_priv) && | |
5981 | max_pixclk > freq_320*limit/100) | |
5982 | return 400000; | |
5983 | else if (max_pixclk > 266667*limit/100) | |
5984 | return freq_320; | |
5985 | else if (max_pixclk > 0) | |
5986 | return 266667; | |
5987 | else | |
5988 | return 200000; | |
5989 | } | |
5990 | ||
5991 | static int bxt_calc_cdclk(int max_pixclk) | |
5992 | { | |
5993 | if (max_pixclk > 576000) | |
5994 | return 624000; | |
5995 | else if (max_pixclk > 384000) | |
5996 | return 576000; | |
5997 | else if (max_pixclk > 288000) | |
5998 | return 384000; | |
5999 | else if (max_pixclk > 144000) | |
6000 | return 288000; | |
6001 | else | |
6002 | return 144000; | |
6003 | } | |
6004 | ||
6005 | /* Compute the max pixel clock for new configuration. */ | |
6006 | static int intel_mode_max_pixclk(struct drm_device *dev, | |
6007 | struct drm_atomic_state *state) | |
6008 | { | |
6009 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
6010 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6011 | struct drm_crtc *crtc; | |
6012 | struct drm_crtc_state *crtc_state; | |
6013 | unsigned max_pixclk = 0, i; | |
6014 | enum pipe pipe; | |
6015 | ||
6016 | memcpy(intel_state->min_pixclk, dev_priv->min_pixclk, | |
6017 | sizeof(intel_state->min_pixclk)); | |
6018 | ||
6019 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
6020 | int pixclk = 0; | |
6021 | ||
6022 | if (crtc_state->enable) | |
6023 | pixclk = crtc_state->adjusted_mode.crtc_clock; | |
6024 | ||
6025 | intel_state->min_pixclk[i] = pixclk; | |
6026 | } | |
6027 | ||
6028 | for_each_pipe(dev_priv, pipe) | |
6029 | max_pixclk = max(intel_state->min_pixclk[pipe], max_pixclk); | |
6030 | ||
6031 | return max_pixclk; | |
6032 | } | |
6033 | ||
6034 | static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state) | |
6035 | { | |
6036 | struct drm_device *dev = state->dev; | |
6037 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6038 | int max_pixclk = intel_mode_max_pixclk(dev, state); | |
6039 | struct intel_atomic_state *intel_state = | |
6040 | to_intel_atomic_state(state); | |
6041 | ||
6042 | intel_state->cdclk = intel_state->dev_cdclk = | |
6043 | valleyview_calc_cdclk(dev_priv, max_pixclk); | |
6044 | ||
6045 | if (!intel_state->active_crtcs) | |
6046 | intel_state->dev_cdclk = valleyview_calc_cdclk(dev_priv, 0); | |
6047 | ||
6048 | return 0; | |
6049 | } | |
6050 | ||
6051 | static int bxt_modeset_calc_cdclk(struct drm_atomic_state *state) | |
6052 | { | |
6053 | int max_pixclk = ilk_max_pixel_rate(state); | |
6054 | struct intel_atomic_state *intel_state = | |
6055 | to_intel_atomic_state(state); | |
6056 | ||
6057 | intel_state->cdclk = intel_state->dev_cdclk = | |
6058 | bxt_calc_cdclk(max_pixclk); | |
6059 | ||
6060 | if (!intel_state->active_crtcs) | |
6061 | intel_state->dev_cdclk = bxt_calc_cdclk(0); | |
6062 | ||
6063 | return 0; | |
6064 | } | |
6065 | ||
6066 | static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv) | |
6067 | { | |
6068 | unsigned int credits, default_credits; | |
6069 | ||
6070 | if (IS_CHERRYVIEW(dev_priv)) | |
6071 | default_credits = PFI_CREDIT(12); | |
6072 | else | |
6073 | default_credits = PFI_CREDIT(8); | |
6074 | ||
6075 | if (dev_priv->cdclk_freq >= dev_priv->czclk_freq) { | |
6076 | /* CHV suggested value is 31 or 63 */ | |
6077 | if (IS_CHERRYVIEW(dev_priv)) | |
6078 | credits = PFI_CREDIT_63; | |
6079 | else | |
6080 | credits = PFI_CREDIT(15); | |
6081 | } else { | |
6082 | credits = default_credits; | |
6083 | } | |
6084 | ||
6085 | /* | |
6086 | * WA - write default credits before re-programming | |
6087 | * FIXME: should we also set the resend bit here? | |
6088 | */ | |
6089 | I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE | | |
6090 | default_credits); | |
6091 | ||
6092 | I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE | | |
6093 | credits | PFI_CREDIT_RESEND); | |
6094 | ||
6095 | /* | |
6096 | * FIXME is this guaranteed to clear | |
6097 | * immediately or should we poll for it? | |
6098 | */ | |
6099 | WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND); | |
6100 | } | |
6101 | ||
6102 | static void valleyview_modeset_commit_cdclk(struct drm_atomic_state *old_state) | |
6103 | { | |
6104 | struct drm_device *dev = old_state->dev; | |
6105 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6106 | struct intel_atomic_state *old_intel_state = | |
6107 | to_intel_atomic_state(old_state); | |
6108 | unsigned req_cdclk = old_intel_state->dev_cdclk; | |
6109 | ||
6110 | /* | |
6111 | * FIXME: We can end up here with all power domains off, yet | |
6112 | * with a CDCLK frequency other than the minimum. To account | |
6113 | * for this take the PIPE-A power domain, which covers the HW | |
6114 | * blocks needed for the following programming. This can be | |
6115 | * removed once it's guaranteed that we get here either with | |
6116 | * the minimum CDCLK set, or the required power domains | |
6117 | * enabled. | |
6118 | */ | |
6119 | intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A); | |
6120 | ||
6121 | if (IS_CHERRYVIEW(dev)) | |
6122 | cherryview_set_cdclk(dev, req_cdclk); | |
6123 | else | |
6124 | valleyview_set_cdclk(dev, req_cdclk); | |
6125 | ||
6126 | vlv_program_pfi_credits(dev_priv); | |
6127 | ||
6128 | intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A); | |
6129 | } | |
6130 | ||
6131 | static void valleyview_crtc_enable(struct drm_crtc *crtc) | |
6132 | { | |
6133 | struct drm_device *dev = crtc->dev; | |
6134 | struct drm_i915_private *dev_priv = to_i915(dev); | |
6135 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
6136 | struct intel_encoder *encoder; | |
6137 | struct intel_crtc_state *pipe_config = | |
6138 | to_intel_crtc_state(crtc->state); | |
6139 | int pipe = intel_crtc->pipe; | |
6140 | ||
6141 | if (WARN_ON(intel_crtc->active)) | |
6142 | return; | |
6143 | ||
6144 | if (intel_crtc->config->has_dp_encoder) | |
6145 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
6146 | ||
6147 | intel_set_pipe_timings(intel_crtc); | |
6148 | intel_set_pipe_src_size(intel_crtc); | |
6149 | ||
6150 | if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) { | |
6151 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6152 | ||
6153 | I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY); | |
6154 | I915_WRITE(CHV_CANVAS(pipe), 0); | |
6155 | } | |
6156 | ||
6157 | i9xx_set_pipeconf(intel_crtc); | |
6158 | ||
6159 | intel_crtc->active = true; | |
6160 | ||
6161 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
6162 | ||
6163 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6164 | if (encoder->pre_pll_enable) | |
6165 | encoder->pre_pll_enable(encoder); | |
6166 | ||
6167 | if (IS_CHERRYVIEW(dev)) { | |
6168 | chv_prepare_pll(intel_crtc, intel_crtc->config); | |
6169 | chv_enable_pll(intel_crtc, intel_crtc->config); | |
6170 | } else { | |
6171 | vlv_prepare_pll(intel_crtc, intel_crtc->config); | |
6172 | vlv_enable_pll(intel_crtc, intel_crtc->config); | |
6173 | } | |
6174 | ||
6175 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6176 | if (encoder->pre_enable) | |
6177 | encoder->pre_enable(encoder); | |
6178 | ||
6179 | i9xx_pfit_enable(intel_crtc); | |
6180 | ||
6181 | intel_color_load_luts(&pipe_config->base); | |
6182 | ||
6183 | intel_update_watermarks(crtc); | |
6184 | intel_enable_pipe(intel_crtc); | |
6185 | ||
6186 | assert_vblank_disabled(crtc); | |
6187 | drm_crtc_vblank_on(crtc); | |
6188 | ||
6189 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6190 | encoder->enable(encoder); | |
6191 | } | |
6192 | ||
6193 | static void i9xx_set_pll_dividers(struct intel_crtc *crtc) | |
6194 | { | |
6195 | struct drm_device *dev = crtc->base.dev; | |
6196 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6197 | ||
6198 | I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0); | |
6199 | I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1); | |
6200 | } | |
6201 | ||
6202 | static void i9xx_crtc_enable(struct drm_crtc *crtc) | |
6203 | { | |
6204 | struct drm_device *dev = crtc->dev; | |
6205 | struct drm_i915_private *dev_priv = to_i915(dev); | |
6206 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
6207 | struct intel_encoder *encoder; | |
6208 | struct intel_crtc_state *pipe_config = | |
6209 | to_intel_crtc_state(crtc->state); | |
6210 | enum pipe pipe = intel_crtc->pipe; | |
6211 | ||
6212 | if (WARN_ON(intel_crtc->active)) | |
6213 | return; | |
6214 | ||
6215 | i9xx_set_pll_dividers(intel_crtc); | |
6216 | ||
6217 | if (intel_crtc->config->has_dp_encoder) | |
6218 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
6219 | ||
6220 | intel_set_pipe_timings(intel_crtc); | |
6221 | intel_set_pipe_src_size(intel_crtc); | |
6222 | ||
6223 | i9xx_set_pipeconf(intel_crtc); | |
6224 | ||
6225 | intel_crtc->active = true; | |
6226 | ||
6227 | if (!IS_GEN2(dev)) | |
6228 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); | |
6229 | ||
6230 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6231 | if (encoder->pre_enable) | |
6232 | encoder->pre_enable(encoder); | |
6233 | ||
6234 | i9xx_enable_pll(intel_crtc); | |
6235 | ||
6236 | i9xx_pfit_enable(intel_crtc); | |
6237 | ||
6238 | intel_color_load_luts(&pipe_config->base); | |
6239 | ||
6240 | intel_update_watermarks(crtc); | |
6241 | intel_enable_pipe(intel_crtc); | |
6242 | ||
6243 | assert_vblank_disabled(crtc); | |
6244 | drm_crtc_vblank_on(crtc); | |
6245 | ||
6246 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6247 | encoder->enable(encoder); | |
6248 | } | |
6249 | ||
6250 | static void i9xx_pfit_disable(struct intel_crtc *crtc) | |
6251 | { | |
6252 | struct drm_device *dev = crtc->base.dev; | |
6253 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6254 | ||
6255 | if (!crtc->config->gmch_pfit.control) | |
6256 | return; | |
6257 | ||
6258 | assert_pipe_disabled(dev_priv, crtc->pipe); | |
6259 | ||
6260 | DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n", | |
6261 | I915_READ(PFIT_CONTROL)); | |
6262 | I915_WRITE(PFIT_CONTROL, 0); | |
6263 | } | |
6264 | ||
6265 | static void i9xx_crtc_disable(struct drm_crtc *crtc) | |
6266 | { | |
6267 | struct drm_device *dev = crtc->dev; | |
6268 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6269 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
6270 | struct intel_encoder *encoder; | |
6271 | int pipe = intel_crtc->pipe; | |
6272 | ||
6273 | /* | |
6274 | * On gen2 planes are double buffered but the pipe isn't, so we must | |
6275 | * wait for planes to fully turn off before disabling the pipe. | |
6276 | */ | |
6277 | if (IS_GEN2(dev)) | |
6278 | intel_wait_for_vblank(dev, pipe); | |
6279 | ||
6280 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6281 | encoder->disable(encoder); | |
6282 | ||
6283 | drm_crtc_vblank_off(crtc); | |
6284 | assert_vblank_disabled(crtc); | |
6285 | ||
6286 | intel_disable_pipe(intel_crtc); | |
6287 | ||
6288 | i9xx_pfit_disable(intel_crtc); | |
6289 | ||
6290 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6291 | if (encoder->post_disable) | |
6292 | encoder->post_disable(encoder); | |
6293 | ||
6294 | if (!intel_crtc->config->has_dsi_encoder) { | |
6295 | if (IS_CHERRYVIEW(dev)) | |
6296 | chv_disable_pll(dev_priv, pipe); | |
6297 | else if (IS_VALLEYVIEW(dev)) | |
6298 | vlv_disable_pll(dev_priv, pipe); | |
6299 | else | |
6300 | i9xx_disable_pll(intel_crtc); | |
6301 | } | |
6302 | ||
6303 | for_each_encoder_on_crtc(dev, crtc, encoder) | |
6304 | if (encoder->post_pll_disable) | |
6305 | encoder->post_pll_disable(encoder); | |
6306 | ||
6307 | if (!IS_GEN2(dev)) | |
6308 | intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false); | |
6309 | } | |
6310 | ||
6311 | static void intel_crtc_disable_noatomic(struct drm_crtc *crtc) | |
6312 | { | |
6313 | struct intel_encoder *encoder; | |
6314 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
6315 | struct drm_i915_private *dev_priv = to_i915(crtc->dev); | |
6316 | enum intel_display_power_domain domain; | |
6317 | unsigned long domains; | |
6318 | ||
6319 | if (!intel_crtc->active) | |
6320 | return; | |
6321 | ||
6322 | if (to_intel_plane_state(crtc->primary->state)->visible) { | |
6323 | WARN_ON(intel_crtc->flip_work); | |
6324 | ||
6325 | intel_pre_disable_primary_noatomic(crtc); | |
6326 | ||
6327 | intel_crtc_disable_planes(crtc, 1 << drm_plane_index(crtc->primary)); | |
6328 | to_intel_plane_state(crtc->primary->state)->visible = false; | |
6329 | } | |
6330 | ||
6331 | dev_priv->display.crtc_disable(crtc); | |
6332 | ||
6333 | DRM_DEBUG_KMS("[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n", | |
6334 | crtc->base.id, crtc->name); | |
6335 | ||
6336 | WARN_ON(drm_atomic_set_mode_for_crtc(crtc->state, NULL) < 0); | |
6337 | crtc->state->active = false; | |
6338 | intel_crtc->active = false; | |
6339 | crtc->enabled = false; | |
6340 | crtc->state->connector_mask = 0; | |
6341 | crtc->state->encoder_mask = 0; | |
6342 | ||
6343 | for_each_encoder_on_crtc(crtc->dev, crtc, encoder) | |
6344 | encoder->base.crtc = NULL; | |
6345 | ||
6346 | intel_fbc_disable(intel_crtc); | |
6347 | intel_update_watermarks(crtc); | |
6348 | intel_disable_shared_dpll(intel_crtc); | |
6349 | ||
6350 | domains = intel_crtc->enabled_power_domains; | |
6351 | for_each_power_domain(domain, domains) | |
6352 | intel_display_power_put(dev_priv, domain); | |
6353 | intel_crtc->enabled_power_domains = 0; | |
6354 | ||
6355 | dev_priv->active_crtcs &= ~(1 << intel_crtc->pipe); | |
6356 | dev_priv->min_pixclk[intel_crtc->pipe] = 0; | |
6357 | } | |
6358 | ||
6359 | /* | |
6360 | * turn all crtc's off, but do not adjust state | |
6361 | * This has to be paired with a call to intel_modeset_setup_hw_state. | |
6362 | */ | |
6363 | int intel_display_suspend(struct drm_device *dev) | |
6364 | { | |
6365 | struct drm_i915_private *dev_priv = to_i915(dev); | |
6366 | struct drm_atomic_state *state; | |
6367 | int ret; | |
6368 | ||
6369 | state = drm_atomic_helper_suspend(dev); | |
6370 | ret = PTR_ERR_OR_ZERO(state); | |
6371 | if (ret) | |
6372 | DRM_ERROR("Suspending crtc's failed with %i\n", ret); | |
6373 | else | |
6374 | dev_priv->modeset_restore_state = state; | |
6375 | return ret; | |
6376 | } | |
6377 | ||
6378 | void intel_encoder_destroy(struct drm_encoder *encoder) | |
6379 | { | |
6380 | struct intel_encoder *intel_encoder = to_intel_encoder(encoder); | |
6381 | ||
6382 | drm_encoder_cleanup(encoder); | |
6383 | kfree(intel_encoder); | |
6384 | } | |
6385 | ||
6386 | /* Cross check the actual hw state with our own modeset state tracking (and it's | |
6387 | * internal consistency). */ | |
6388 | static void intel_connector_verify_state(struct intel_connector *connector) | |
6389 | { | |
6390 | struct drm_crtc *crtc = connector->base.state->crtc; | |
6391 | ||
6392 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", | |
6393 | connector->base.base.id, | |
6394 | connector->base.name); | |
6395 | ||
6396 | if (connector->get_hw_state(connector)) { | |
6397 | struct intel_encoder *encoder = connector->encoder; | |
6398 | struct drm_connector_state *conn_state = connector->base.state; | |
6399 | ||
6400 | I915_STATE_WARN(!crtc, | |
6401 | "connector enabled without attached crtc\n"); | |
6402 | ||
6403 | if (!crtc) | |
6404 | return; | |
6405 | ||
6406 | I915_STATE_WARN(!crtc->state->active, | |
6407 | "connector is active, but attached crtc isn't\n"); | |
6408 | ||
6409 | if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST) | |
6410 | return; | |
6411 | ||
6412 | I915_STATE_WARN(conn_state->best_encoder != &encoder->base, | |
6413 | "atomic encoder doesn't match attached encoder\n"); | |
6414 | ||
6415 | I915_STATE_WARN(conn_state->crtc != encoder->base.crtc, | |
6416 | "attached encoder crtc differs from connector crtc\n"); | |
6417 | } else { | |
6418 | I915_STATE_WARN(crtc && crtc->state->active, | |
6419 | "attached crtc is active, but connector isn't\n"); | |
6420 | I915_STATE_WARN(!crtc && connector->base.state->best_encoder, | |
6421 | "best encoder set without crtc!\n"); | |
6422 | } | |
6423 | } | |
6424 | ||
6425 | int intel_connector_init(struct intel_connector *connector) | |
6426 | { | |
6427 | drm_atomic_helper_connector_reset(&connector->base); | |
6428 | ||
6429 | if (!connector->base.state) | |
6430 | return -ENOMEM; | |
6431 | ||
6432 | return 0; | |
6433 | } | |
6434 | ||
6435 | struct intel_connector *intel_connector_alloc(void) | |
6436 | { | |
6437 | struct intel_connector *connector; | |
6438 | ||
6439 | connector = kzalloc(sizeof *connector, GFP_KERNEL); | |
6440 | if (!connector) | |
6441 | return NULL; | |
6442 | ||
6443 | if (intel_connector_init(connector) < 0) { | |
6444 | kfree(connector); | |
6445 | return NULL; | |
6446 | } | |
6447 | ||
6448 | return connector; | |
6449 | } | |
6450 | ||
6451 | /* Simple connector->get_hw_state implementation for encoders that support only | |
6452 | * one connector and no cloning and hence the encoder state determines the state | |
6453 | * of the connector. */ | |
6454 | bool intel_connector_get_hw_state(struct intel_connector *connector) | |
6455 | { | |
6456 | enum pipe pipe = 0; | |
6457 | struct intel_encoder *encoder = connector->encoder; | |
6458 | ||
6459 | return encoder->get_hw_state(encoder, &pipe); | |
6460 | } | |
6461 | ||
6462 | static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state) | |
6463 | { | |
6464 | if (crtc_state->base.enable && crtc_state->has_pch_encoder) | |
6465 | return crtc_state->fdi_lanes; | |
6466 | ||
6467 | return 0; | |
6468 | } | |
6469 | ||
6470 | static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe, | |
6471 | struct intel_crtc_state *pipe_config) | |
6472 | { | |
6473 | struct drm_atomic_state *state = pipe_config->base.state; | |
6474 | struct intel_crtc *other_crtc; | |
6475 | struct intel_crtc_state *other_crtc_state; | |
6476 | ||
6477 | DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n", | |
6478 | pipe_name(pipe), pipe_config->fdi_lanes); | |
6479 | if (pipe_config->fdi_lanes > 4) { | |
6480 | DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n", | |
6481 | pipe_name(pipe), pipe_config->fdi_lanes); | |
6482 | return -EINVAL; | |
6483 | } | |
6484 | ||
6485 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
6486 | if (pipe_config->fdi_lanes > 2) { | |
6487 | DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n", | |
6488 | pipe_config->fdi_lanes); | |
6489 | return -EINVAL; | |
6490 | } else { | |
6491 | return 0; | |
6492 | } | |
6493 | } | |
6494 | ||
6495 | if (INTEL_INFO(dev)->num_pipes == 2) | |
6496 | return 0; | |
6497 | ||
6498 | /* Ivybridge 3 pipe is really complicated */ | |
6499 | switch (pipe) { | |
6500 | case PIPE_A: | |
6501 | return 0; | |
6502 | case PIPE_B: | |
6503 | if (pipe_config->fdi_lanes <= 2) | |
6504 | return 0; | |
6505 | ||
6506 | other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C)); | |
6507 | other_crtc_state = | |
6508 | intel_atomic_get_crtc_state(state, other_crtc); | |
6509 | if (IS_ERR(other_crtc_state)) | |
6510 | return PTR_ERR(other_crtc_state); | |
6511 | ||
6512 | if (pipe_required_fdi_lanes(other_crtc_state) > 0) { | |
6513 | DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n", | |
6514 | pipe_name(pipe), pipe_config->fdi_lanes); | |
6515 | return -EINVAL; | |
6516 | } | |
6517 | return 0; | |
6518 | case PIPE_C: | |
6519 | if (pipe_config->fdi_lanes > 2) { | |
6520 | DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n", | |
6521 | pipe_name(pipe), pipe_config->fdi_lanes); | |
6522 | return -EINVAL; | |
6523 | } | |
6524 | ||
6525 | other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B)); | |
6526 | other_crtc_state = | |
6527 | intel_atomic_get_crtc_state(state, other_crtc); | |
6528 | if (IS_ERR(other_crtc_state)) | |
6529 | return PTR_ERR(other_crtc_state); | |
6530 | ||
6531 | if (pipe_required_fdi_lanes(other_crtc_state) > 2) { | |
6532 | DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n"); | |
6533 | return -EINVAL; | |
6534 | } | |
6535 | return 0; | |
6536 | default: | |
6537 | BUG(); | |
6538 | } | |
6539 | } | |
6540 | ||
6541 | #define RETRY 1 | |
6542 | static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc, | |
6543 | struct intel_crtc_state *pipe_config) | |
6544 | { | |
6545 | struct drm_device *dev = intel_crtc->base.dev; | |
6546 | const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; | |
6547 | int lane, link_bw, fdi_dotclock, ret; | |
6548 | bool needs_recompute = false; | |
6549 | ||
6550 | retry: | |
6551 | /* FDI is a binary signal running at ~2.7GHz, encoding | |
6552 | * each output octet as 10 bits. The actual frequency | |
6553 | * is stored as a divider into a 100MHz clock, and the | |
6554 | * mode pixel clock is stored in units of 1KHz. | |
6555 | * Hence the bw of each lane in terms of the mode signal | |
6556 | * is: | |
6557 | */ | |
6558 | link_bw = intel_fdi_link_freq(to_i915(dev), pipe_config); | |
6559 | ||
6560 | fdi_dotclock = adjusted_mode->crtc_clock; | |
6561 | ||
6562 | lane = ironlake_get_lanes_required(fdi_dotclock, link_bw, | |
6563 | pipe_config->pipe_bpp); | |
6564 | ||
6565 | pipe_config->fdi_lanes = lane; | |
6566 | ||
6567 | intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock, | |
6568 | link_bw, &pipe_config->fdi_m_n); | |
6569 | ||
6570 | ret = ironlake_check_fdi_lanes(dev, intel_crtc->pipe, pipe_config); | |
6571 | if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) { | |
6572 | pipe_config->pipe_bpp -= 2*3; | |
6573 | DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n", | |
6574 | pipe_config->pipe_bpp); | |
6575 | needs_recompute = true; | |
6576 | pipe_config->bw_constrained = true; | |
6577 | ||
6578 | goto retry; | |
6579 | } | |
6580 | ||
6581 | if (needs_recompute) | |
6582 | return RETRY; | |
6583 | ||
6584 | return ret; | |
6585 | } | |
6586 | ||
6587 | static bool pipe_config_supports_ips(struct drm_i915_private *dev_priv, | |
6588 | struct intel_crtc_state *pipe_config) | |
6589 | { | |
6590 | if (pipe_config->pipe_bpp > 24) | |
6591 | return false; | |
6592 | ||
6593 | /* HSW can handle pixel rate up to cdclk? */ | |
6594 | if (IS_HASWELL(dev_priv)) | |
6595 | return true; | |
6596 | ||
6597 | /* | |
6598 | * We compare against max which means we must take | |
6599 | * the increased cdclk requirement into account when | |
6600 | * calculating the new cdclk. | |
6601 | * | |
6602 | * Should measure whether using a lower cdclk w/o IPS | |
6603 | */ | |
6604 | return ilk_pipe_pixel_rate(pipe_config) <= | |
6605 | dev_priv->max_cdclk_freq * 95 / 100; | |
6606 | } | |
6607 | ||
6608 | static void hsw_compute_ips_config(struct intel_crtc *crtc, | |
6609 | struct intel_crtc_state *pipe_config) | |
6610 | { | |
6611 | struct drm_device *dev = crtc->base.dev; | |
6612 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6613 | ||
6614 | pipe_config->ips_enabled = i915.enable_ips && | |
6615 | hsw_crtc_supports_ips(crtc) && | |
6616 | pipe_config_supports_ips(dev_priv, pipe_config); | |
6617 | } | |
6618 | ||
6619 | static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc) | |
6620 | { | |
6621 | const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
6622 | ||
6623 | /* GDG double wide on either pipe, otherwise pipe A only */ | |
6624 | return INTEL_INFO(dev_priv)->gen < 4 && | |
6625 | (crtc->pipe == PIPE_A || IS_I915G(dev_priv)); | |
6626 | } | |
6627 | ||
6628 | static int intel_crtc_compute_config(struct intel_crtc *crtc, | |
6629 | struct intel_crtc_state *pipe_config) | |
6630 | { | |
6631 | struct drm_device *dev = crtc->base.dev; | |
6632 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6633 | const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; | |
6634 | int clock_limit = dev_priv->max_dotclk_freq; | |
6635 | ||
6636 | if (INTEL_INFO(dev)->gen < 4) { | |
6637 | clock_limit = dev_priv->max_cdclk_freq * 9 / 10; | |
6638 | ||
6639 | /* | |
6640 | * Enable double wide mode when the dot clock | |
6641 | * is > 90% of the (display) core speed. | |
6642 | */ | |
6643 | if (intel_crtc_supports_double_wide(crtc) && | |
6644 | adjusted_mode->crtc_clock > clock_limit) { | |
6645 | clock_limit = dev_priv->max_dotclk_freq; | |
6646 | pipe_config->double_wide = true; | |
6647 | } | |
6648 | } | |
6649 | ||
6650 | if (adjusted_mode->crtc_clock > clock_limit) { | |
6651 | DRM_DEBUG_KMS("requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n", | |
6652 | adjusted_mode->crtc_clock, clock_limit, | |
6653 | yesno(pipe_config->double_wide)); | |
6654 | return -EINVAL; | |
6655 | } | |
6656 | ||
6657 | /* | |
6658 | * Pipe horizontal size must be even in: | |
6659 | * - DVO ganged mode | |
6660 | * - LVDS dual channel mode | |
6661 | * - Double wide pipe | |
6662 | */ | |
6663 | if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) && | |
6664 | intel_is_dual_link_lvds(dev)) || pipe_config->double_wide) | |
6665 | pipe_config->pipe_src_w &= ~1; | |
6666 | ||
6667 | /* Cantiga+ cannot handle modes with a hsync front porch of 0. | |
6668 | * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw. | |
6669 | */ | |
6670 | if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) && | |
6671 | adjusted_mode->crtc_hsync_start == adjusted_mode->crtc_hdisplay) | |
6672 | return -EINVAL; | |
6673 | ||
6674 | if (HAS_IPS(dev)) | |
6675 | hsw_compute_ips_config(crtc, pipe_config); | |
6676 | ||
6677 | if (pipe_config->has_pch_encoder) | |
6678 | return ironlake_fdi_compute_config(crtc, pipe_config); | |
6679 | ||
6680 | return 0; | |
6681 | } | |
6682 | ||
6683 | static int skylake_get_display_clock_speed(struct drm_device *dev) | |
6684 | { | |
6685 | struct drm_i915_private *dev_priv = to_i915(dev); | |
6686 | uint32_t cdctl; | |
6687 | ||
6688 | skl_dpll0_update(dev_priv); | |
6689 | ||
6690 | if (dev_priv->cdclk_pll.vco == 0) | |
6691 | return dev_priv->cdclk_pll.ref; | |
6692 | ||
6693 | cdctl = I915_READ(CDCLK_CTL); | |
6694 | ||
6695 | if (dev_priv->cdclk_pll.vco == 8640000) { | |
6696 | switch (cdctl & CDCLK_FREQ_SEL_MASK) { | |
6697 | case CDCLK_FREQ_450_432: | |
6698 | return 432000; | |
6699 | case CDCLK_FREQ_337_308: | |
6700 | return 308571; | |
6701 | case CDCLK_FREQ_540: | |
6702 | return 540000; | |
6703 | case CDCLK_FREQ_675_617: | |
6704 | return 617143; | |
6705 | default: | |
6706 | MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK); | |
6707 | } | |
6708 | } else { | |
6709 | switch (cdctl & CDCLK_FREQ_SEL_MASK) { | |
6710 | case CDCLK_FREQ_450_432: | |
6711 | return 450000; | |
6712 | case CDCLK_FREQ_337_308: | |
6713 | return 337500; | |
6714 | case CDCLK_FREQ_540: | |
6715 | return 540000; | |
6716 | case CDCLK_FREQ_675_617: | |
6717 | return 675000; | |
6718 | default: | |
6719 | MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK); | |
6720 | } | |
6721 | } | |
6722 | ||
6723 | return dev_priv->cdclk_pll.ref; | |
6724 | } | |
6725 | ||
6726 | static void bxt_de_pll_update(struct drm_i915_private *dev_priv) | |
6727 | { | |
6728 | u32 val; | |
6729 | ||
6730 | dev_priv->cdclk_pll.ref = 19200; | |
6731 | dev_priv->cdclk_pll.vco = 0; | |
6732 | ||
6733 | val = I915_READ(BXT_DE_PLL_ENABLE); | |
6734 | if ((val & BXT_DE_PLL_PLL_ENABLE) == 0) | |
6735 | return; | |
6736 | ||
6737 | if (WARN_ON((val & BXT_DE_PLL_LOCK) == 0)) | |
6738 | return; | |
6739 | ||
6740 | val = I915_READ(BXT_DE_PLL_CTL); | |
6741 | dev_priv->cdclk_pll.vco = (val & BXT_DE_PLL_RATIO_MASK) * | |
6742 | dev_priv->cdclk_pll.ref; | |
6743 | } | |
6744 | ||
6745 | static int broxton_get_display_clock_speed(struct drm_device *dev) | |
6746 | { | |
6747 | struct drm_i915_private *dev_priv = to_i915(dev); | |
6748 | u32 divider; | |
6749 | int div, vco; | |
6750 | ||
6751 | bxt_de_pll_update(dev_priv); | |
6752 | ||
6753 | vco = dev_priv->cdclk_pll.vco; | |
6754 | if (vco == 0) | |
6755 | return dev_priv->cdclk_pll.ref; | |
6756 | ||
6757 | divider = I915_READ(CDCLK_CTL) & BXT_CDCLK_CD2X_DIV_SEL_MASK; | |
6758 | ||
6759 | switch (divider) { | |
6760 | case BXT_CDCLK_CD2X_DIV_SEL_1: | |
6761 | div = 2; | |
6762 | break; | |
6763 | case BXT_CDCLK_CD2X_DIV_SEL_1_5: | |
6764 | div = 3; | |
6765 | break; | |
6766 | case BXT_CDCLK_CD2X_DIV_SEL_2: | |
6767 | div = 4; | |
6768 | break; | |
6769 | case BXT_CDCLK_CD2X_DIV_SEL_4: | |
6770 | div = 8; | |
6771 | break; | |
6772 | default: | |
6773 | MISSING_CASE(divider); | |
6774 | return dev_priv->cdclk_pll.ref; | |
6775 | } | |
6776 | ||
6777 | return DIV_ROUND_CLOSEST(vco, div); | |
6778 | } | |
6779 | ||
6780 | static int broadwell_get_display_clock_speed(struct drm_device *dev) | |
6781 | { | |
6782 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6783 | uint32_t lcpll = I915_READ(LCPLL_CTL); | |
6784 | uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK; | |
6785 | ||
6786 | if (lcpll & LCPLL_CD_SOURCE_FCLK) | |
6787 | return 800000; | |
6788 | else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) | |
6789 | return 450000; | |
6790 | else if (freq == LCPLL_CLK_FREQ_450) | |
6791 | return 450000; | |
6792 | else if (freq == LCPLL_CLK_FREQ_54O_BDW) | |
6793 | return 540000; | |
6794 | else if (freq == LCPLL_CLK_FREQ_337_5_BDW) | |
6795 | return 337500; | |
6796 | else | |
6797 | return 675000; | |
6798 | } | |
6799 | ||
6800 | static int haswell_get_display_clock_speed(struct drm_device *dev) | |
6801 | { | |
6802 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6803 | uint32_t lcpll = I915_READ(LCPLL_CTL); | |
6804 | uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK; | |
6805 | ||
6806 | if (lcpll & LCPLL_CD_SOURCE_FCLK) | |
6807 | return 800000; | |
6808 | else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) | |
6809 | return 450000; | |
6810 | else if (freq == LCPLL_CLK_FREQ_450) | |
6811 | return 450000; | |
6812 | else if (IS_HSW_ULT(dev)) | |
6813 | return 337500; | |
6814 | else | |
6815 | return 540000; | |
6816 | } | |
6817 | ||
6818 | static int valleyview_get_display_clock_speed(struct drm_device *dev) | |
6819 | { | |
6820 | return vlv_get_cck_clock_hpll(to_i915(dev), "cdclk", | |
6821 | CCK_DISPLAY_CLOCK_CONTROL); | |
6822 | } | |
6823 | ||
6824 | static int ilk_get_display_clock_speed(struct drm_device *dev) | |
6825 | { | |
6826 | return 450000; | |
6827 | } | |
6828 | ||
6829 | static int i945_get_display_clock_speed(struct drm_device *dev) | |
6830 | { | |
6831 | return 400000; | |
6832 | } | |
6833 | ||
6834 | static int i915_get_display_clock_speed(struct drm_device *dev) | |
6835 | { | |
6836 | return 333333; | |
6837 | } | |
6838 | ||
6839 | static int i9xx_misc_get_display_clock_speed(struct drm_device *dev) | |
6840 | { | |
6841 | return 200000; | |
6842 | } | |
6843 | ||
6844 | static int pnv_get_display_clock_speed(struct drm_device *dev) | |
6845 | { | |
6846 | u16 gcfgc = 0; | |
6847 | ||
6848 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
6849 | ||
6850 | switch (gcfgc & GC_DISPLAY_CLOCK_MASK) { | |
6851 | case GC_DISPLAY_CLOCK_267_MHZ_PNV: | |
6852 | return 266667; | |
6853 | case GC_DISPLAY_CLOCK_333_MHZ_PNV: | |
6854 | return 333333; | |
6855 | case GC_DISPLAY_CLOCK_444_MHZ_PNV: | |
6856 | return 444444; | |
6857 | case GC_DISPLAY_CLOCK_200_MHZ_PNV: | |
6858 | return 200000; | |
6859 | default: | |
6860 | DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc); | |
6861 | case GC_DISPLAY_CLOCK_133_MHZ_PNV: | |
6862 | return 133333; | |
6863 | case GC_DISPLAY_CLOCK_167_MHZ_PNV: | |
6864 | return 166667; | |
6865 | } | |
6866 | } | |
6867 | ||
6868 | static int i915gm_get_display_clock_speed(struct drm_device *dev) | |
6869 | { | |
6870 | u16 gcfgc = 0; | |
6871 | ||
6872 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
6873 | ||
6874 | if (gcfgc & GC_LOW_FREQUENCY_ENABLE) | |
6875 | return 133333; | |
6876 | else { | |
6877 | switch (gcfgc & GC_DISPLAY_CLOCK_MASK) { | |
6878 | case GC_DISPLAY_CLOCK_333_MHZ: | |
6879 | return 333333; | |
6880 | default: | |
6881 | case GC_DISPLAY_CLOCK_190_200_MHZ: | |
6882 | return 190000; | |
6883 | } | |
6884 | } | |
6885 | } | |
6886 | ||
6887 | static int i865_get_display_clock_speed(struct drm_device *dev) | |
6888 | { | |
6889 | return 266667; | |
6890 | } | |
6891 | ||
6892 | static int i85x_get_display_clock_speed(struct drm_device *dev) | |
6893 | { | |
6894 | u16 hpllcc = 0; | |
6895 | ||
6896 | /* | |
6897 | * 852GM/852GMV only supports 133 MHz and the HPLLCC | |
6898 | * encoding is different :( | |
6899 | * FIXME is this the right way to detect 852GM/852GMV? | |
6900 | */ | |
6901 | if (dev->pdev->revision == 0x1) | |
6902 | return 133333; | |
6903 | ||
6904 | pci_bus_read_config_word(dev->pdev->bus, | |
6905 | PCI_DEVFN(0, 3), HPLLCC, &hpllcc); | |
6906 | ||
6907 | /* Assume that the hardware is in the high speed state. This | |
6908 | * should be the default. | |
6909 | */ | |
6910 | switch (hpllcc & GC_CLOCK_CONTROL_MASK) { | |
6911 | case GC_CLOCK_133_200: | |
6912 | case GC_CLOCK_133_200_2: | |
6913 | case GC_CLOCK_100_200: | |
6914 | return 200000; | |
6915 | case GC_CLOCK_166_250: | |
6916 | return 250000; | |
6917 | case GC_CLOCK_100_133: | |
6918 | return 133333; | |
6919 | case GC_CLOCK_133_266: | |
6920 | case GC_CLOCK_133_266_2: | |
6921 | case GC_CLOCK_166_266: | |
6922 | return 266667; | |
6923 | } | |
6924 | ||
6925 | /* Shouldn't happen */ | |
6926 | return 0; | |
6927 | } | |
6928 | ||
6929 | static int i830_get_display_clock_speed(struct drm_device *dev) | |
6930 | { | |
6931 | return 133333; | |
6932 | } | |
6933 | ||
6934 | static unsigned int intel_hpll_vco(struct drm_device *dev) | |
6935 | { | |
6936 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6937 | static const unsigned int blb_vco[8] = { | |
6938 | [0] = 3200000, | |
6939 | [1] = 4000000, | |
6940 | [2] = 5333333, | |
6941 | [3] = 4800000, | |
6942 | [4] = 6400000, | |
6943 | }; | |
6944 | static const unsigned int pnv_vco[8] = { | |
6945 | [0] = 3200000, | |
6946 | [1] = 4000000, | |
6947 | [2] = 5333333, | |
6948 | [3] = 4800000, | |
6949 | [4] = 2666667, | |
6950 | }; | |
6951 | static const unsigned int cl_vco[8] = { | |
6952 | [0] = 3200000, | |
6953 | [1] = 4000000, | |
6954 | [2] = 5333333, | |
6955 | [3] = 6400000, | |
6956 | [4] = 3333333, | |
6957 | [5] = 3566667, | |
6958 | [6] = 4266667, | |
6959 | }; | |
6960 | static const unsigned int elk_vco[8] = { | |
6961 | [0] = 3200000, | |
6962 | [1] = 4000000, | |
6963 | [2] = 5333333, | |
6964 | [3] = 4800000, | |
6965 | }; | |
6966 | static const unsigned int ctg_vco[8] = { | |
6967 | [0] = 3200000, | |
6968 | [1] = 4000000, | |
6969 | [2] = 5333333, | |
6970 | [3] = 6400000, | |
6971 | [4] = 2666667, | |
6972 | [5] = 4266667, | |
6973 | }; | |
6974 | const unsigned int *vco_table; | |
6975 | unsigned int vco; | |
6976 | uint8_t tmp = 0; | |
6977 | ||
6978 | /* FIXME other chipsets? */ | |
6979 | if (IS_GM45(dev)) | |
6980 | vco_table = ctg_vco; | |
6981 | else if (IS_G4X(dev)) | |
6982 | vco_table = elk_vco; | |
6983 | else if (IS_CRESTLINE(dev)) | |
6984 | vco_table = cl_vco; | |
6985 | else if (IS_PINEVIEW(dev)) | |
6986 | vco_table = pnv_vco; | |
6987 | else if (IS_G33(dev)) | |
6988 | vco_table = blb_vco; | |
6989 | else | |
6990 | return 0; | |
6991 | ||
6992 | tmp = I915_READ(IS_MOBILE(dev) ? HPLLVCO_MOBILE : HPLLVCO); | |
6993 | ||
6994 | vco = vco_table[tmp & 0x7]; | |
6995 | if (vco == 0) | |
6996 | DRM_ERROR("Bad HPLL VCO (HPLLVCO=0x%02x)\n", tmp); | |
6997 | else | |
6998 | DRM_DEBUG_KMS("HPLL VCO %u kHz\n", vco); | |
6999 | ||
7000 | return vco; | |
7001 | } | |
7002 | ||
7003 | static int gm45_get_display_clock_speed(struct drm_device *dev) | |
7004 | { | |
7005 | unsigned int cdclk_sel, vco = intel_hpll_vco(dev); | |
7006 | uint16_t tmp = 0; | |
7007 | ||
7008 | pci_read_config_word(dev->pdev, GCFGC, &tmp); | |
7009 | ||
7010 | cdclk_sel = (tmp >> 12) & 0x1; | |
7011 | ||
7012 | switch (vco) { | |
7013 | case 2666667: | |
7014 | case 4000000: | |
7015 | case 5333333: | |
7016 | return cdclk_sel ? 333333 : 222222; | |
7017 | case 3200000: | |
7018 | return cdclk_sel ? 320000 : 228571; | |
7019 | default: | |
7020 | DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n", vco, tmp); | |
7021 | return 222222; | |
7022 | } | |
7023 | } | |
7024 | ||
7025 | static int i965gm_get_display_clock_speed(struct drm_device *dev) | |
7026 | { | |
7027 | static const uint8_t div_3200[] = { 16, 10, 8 }; | |
7028 | static const uint8_t div_4000[] = { 20, 12, 10 }; | |
7029 | static const uint8_t div_5333[] = { 24, 16, 14 }; | |
7030 | const uint8_t *div_table; | |
7031 | unsigned int cdclk_sel, vco = intel_hpll_vco(dev); | |
7032 | uint16_t tmp = 0; | |
7033 | ||
7034 | pci_read_config_word(dev->pdev, GCFGC, &tmp); | |
7035 | ||
7036 | cdclk_sel = ((tmp >> 8) & 0x1f) - 1; | |
7037 | ||
7038 | if (cdclk_sel >= ARRAY_SIZE(div_3200)) | |
7039 | goto fail; | |
7040 | ||
7041 | switch (vco) { | |
7042 | case 3200000: | |
7043 | div_table = div_3200; | |
7044 | break; | |
7045 | case 4000000: | |
7046 | div_table = div_4000; | |
7047 | break; | |
7048 | case 5333333: | |
7049 | div_table = div_5333; | |
7050 | break; | |
7051 | default: | |
7052 | goto fail; | |
7053 | } | |
7054 | ||
7055 | return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]); | |
7056 | ||
7057 | fail: | |
7058 | DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n", vco, tmp); | |
7059 | return 200000; | |
7060 | } | |
7061 | ||
7062 | static int g33_get_display_clock_speed(struct drm_device *dev) | |
7063 | { | |
7064 | static const uint8_t div_3200[] = { 12, 10, 8, 7, 5, 16 }; | |
7065 | static const uint8_t div_4000[] = { 14, 12, 10, 8, 6, 20 }; | |
7066 | static const uint8_t div_4800[] = { 20, 14, 12, 10, 8, 24 }; | |
7067 | static const uint8_t div_5333[] = { 20, 16, 12, 12, 8, 28 }; | |
7068 | const uint8_t *div_table; | |
7069 | unsigned int cdclk_sel, vco = intel_hpll_vco(dev); | |
7070 | uint16_t tmp = 0; | |
7071 | ||
7072 | pci_read_config_word(dev->pdev, GCFGC, &tmp); | |
7073 | ||
7074 | cdclk_sel = (tmp >> 4) & 0x7; | |
7075 | ||
7076 | if (cdclk_sel >= ARRAY_SIZE(div_3200)) | |
7077 | goto fail; | |
7078 | ||
7079 | switch (vco) { | |
7080 | case 3200000: | |
7081 | div_table = div_3200; | |
7082 | break; | |
7083 | case 4000000: | |
7084 | div_table = div_4000; | |
7085 | break; | |
7086 | case 4800000: | |
7087 | div_table = div_4800; | |
7088 | break; | |
7089 | case 5333333: | |
7090 | div_table = div_5333; | |
7091 | break; | |
7092 | default: | |
7093 | goto fail; | |
7094 | } | |
7095 | ||
7096 | return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]); | |
7097 | ||
7098 | fail: | |
7099 | DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n", vco, tmp); | |
7100 | return 190476; | |
7101 | } | |
7102 | ||
7103 | static void | |
7104 | intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den) | |
7105 | { | |
7106 | while (*num > DATA_LINK_M_N_MASK || | |
7107 | *den > DATA_LINK_M_N_MASK) { | |
7108 | *num >>= 1; | |
7109 | *den >>= 1; | |
7110 | } | |
7111 | } | |
7112 | ||
7113 | static void compute_m_n(unsigned int m, unsigned int n, | |
7114 | uint32_t *ret_m, uint32_t *ret_n) | |
7115 | { | |
7116 | *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX); | |
7117 | *ret_m = div_u64((uint64_t) m * *ret_n, n); | |
7118 | intel_reduce_m_n_ratio(ret_m, ret_n); | |
7119 | } | |
7120 | ||
7121 | void | |
7122 | intel_link_compute_m_n(int bits_per_pixel, int nlanes, | |
7123 | int pixel_clock, int link_clock, | |
7124 | struct intel_link_m_n *m_n) | |
7125 | { | |
7126 | m_n->tu = 64; | |
7127 | ||
7128 | compute_m_n(bits_per_pixel * pixel_clock, | |
7129 | link_clock * nlanes * 8, | |
7130 | &m_n->gmch_m, &m_n->gmch_n); | |
7131 | ||
7132 | compute_m_n(pixel_clock, link_clock, | |
7133 | &m_n->link_m, &m_n->link_n); | |
7134 | } | |
7135 | ||
7136 | static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv) | |
7137 | { | |
7138 | if (i915.panel_use_ssc >= 0) | |
7139 | return i915.panel_use_ssc != 0; | |
7140 | return dev_priv->vbt.lvds_use_ssc | |
7141 | && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE); | |
7142 | } | |
7143 | ||
7144 | static uint32_t pnv_dpll_compute_fp(struct dpll *dpll) | |
7145 | { | |
7146 | return (1 << dpll->n) << 16 | dpll->m2; | |
7147 | } | |
7148 | ||
7149 | static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll) | |
7150 | { | |
7151 | return dpll->n << 16 | dpll->m1 << 8 | dpll->m2; | |
7152 | } | |
7153 | ||
7154 | static void i9xx_update_pll_dividers(struct intel_crtc *crtc, | |
7155 | struct intel_crtc_state *crtc_state, | |
7156 | struct dpll *reduced_clock) | |
7157 | { | |
7158 | struct drm_device *dev = crtc->base.dev; | |
7159 | u32 fp, fp2 = 0; | |
7160 | ||
7161 | if (IS_PINEVIEW(dev)) { | |
7162 | fp = pnv_dpll_compute_fp(&crtc_state->dpll); | |
7163 | if (reduced_clock) | |
7164 | fp2 = pnv_dpll_compute_fp(reduced_clock); | |
7165 | } else { | |
7166 | fp = i9xx_dpll_compute_fp(&crtc_state->dpll); | |
7167 | if (reduced_clock) | |
7168 | fp2 = i9xx_dpll_compute_fp(reduced_clock); | |
7169 | } | |
7170 | ||
7171 | crtc_state->dpll_hw_state.fp0 = fp; | |
7172 | ||
7173 | crtc->lowfreq_avail = false; | |
7174 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) && | |
7175 | reduced_clock) { | |
7176 | crtc_state->dpll_hw_state.fp1 = fp2; | |
7177 | crtc->lowfreq_avail = true; | |
7178 | } else { | |
7179 | crtc_state->dpll_hw_state.fp1 = fp; | |
7180 | } | |
7181 | } | |
7182 | ||
7183 | static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe | |
7184 | pipe) | |
7185 | { | |
7186 | u32 reg_val; | |
7187 | ||
7188 | /* | |
7189 | * PLLB opamp always calibrates to max value of 0x3f, force enable it | |
7190 | * and set it to a reasonable value instead. | |
7191 | */ | |
7192 | reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1)); | |
7193 | reg_val &= 0xffffff00; | |
7194 | reg_val |= 0x00000030; | |
7195 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val); | |
7196 | ||
7197 | reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13); | |
7198 | reg_val &= 0x8cffffff; | |
7199 | reg_val = 0x8c000000; | |
7200 | vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val); | |
7201 | ||
7202 | reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1)); | |
7203 | reg_val &= 0xffffff00; | |
7204 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val); | |
7205 | ||
7206 | reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13); | |
7207 | reg_val &= 0x00ffffff; | |
7208 | reg_val |= 0xb0000000; | |
7209 | vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val); | |
7210 | } | |
7211 | ||
7212 | static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc, | |
7213 | struct intel_link_m_n *m_n) | |
7214 | { | |
7215 | struct drm_device *dev = crtc->base.dev; | |
7216 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7217 | int pipe = crtc->pipe; | |
7218 | ||
7219 | I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m); | |
7220 | I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n); | |
7221 | I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m); | |
7222 | I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n); | |
7223 | } | |
7224 | ||
7225 | static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc, | |
7226 | struct intel_link_m_n *m_n, | |
7227 | struct intel_link_m_n *m2_n2) | |
7228 | { | |
7229 | struct drm_device *dev = crtc->base.dev; | |
7230 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7231 | int pipe = crtc->pipe; | |
7232 | enum transcoder transcoder = crtc->config->cpu_transcoder; | |
7233 | ||
7234 | if (INTEL_INFO(dev)->gen >= 5) { | |
7235 | I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m); | |
7236 | I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n); | |
7237 | I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m); | |
7238 | I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n); | |
7239 | /* M2_N2 registers to be set only for gen < 8 (M2_N2 available | |
7240 | * for gen < 8) and if DRRS is supported (to make sure the | |
7241 | * registers are not unnecessarily accessed). | |
7242 | */ | |
7243 | if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) && | |
7244 | crtc->config->has_drrs) { | |
7245 | I915_WRITE(PIPE_DATA_M2(transcoder), | |
7246 | TU_SIZE(m2_n2->tu) | m2_n2->gmch_m); | |
7247 | I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n); | |
7248 | I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m); | |
7249 | I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n); | |
7250 | } | |
7251 | } else { | |
7252 | I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m); | |
7253 | I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n); | |
7254 | I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m); | |
7255 | I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n); | |
7256 | } | |
7257 | } | |
7258 | ||
7259 | void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n) | |
7260 | { | |
7261 | struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL; | |
7262 | ||
7263 | if (m_n == M1_N1) { | |
7264 | dp_m_n = &crtc->config->dp_m_n; | |
7265 | dp_m2_n2 = &crtc->config->dp_m2_n2; | |
7266 | } else if (m_n == M2_N2) { | |
7267 | ||
7268 | /* | |
7269 | * M2_N2 registers are not supported. Hence m2_n2 divider value | |
7270 | * needs to be programmed into M1_N1. | |
7271 | */ | |
7272 | dp_m_n = &crtc->config->dp_m2_n2; | |
7273 | } else { | |
7274 | DRM_ERROR("Unsupported divider value\n"); | |
7275 | return; | |
7276 | } | |
7277 | ||
7278 | if (crtc->config->has_pch_encoder) | |
7279 | intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n); | |
7280 | else | |
7281 | intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2); | |
7282 | } | |
7283 | ||
7284 | static void vlv_compute_dpll(struct intel_crtc *crtc, | |
7285 | struct intel_crtc_state *pipe_config) | |
7286 | { | |
7287 | pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV | | |
7288 | DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS; | |
7289 | if (crtc->pipe != PIPE_A) | |
7290 | pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV; | |
7291 | ||
7292 | /* DPLL not used with DSI, but still need the rest set up */ | |
7293 | if (!pipe_config->has_dsi_encoder) | |
7294 | pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE | | |
7295 | DPLL_EXT_BUFFER_ENABLE_VLV; | |
7296 | ||
7297 | pipe_config->dpll_hw_state.dpll_md = | |
7298 | (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT; | |
7299 | } | |
7300 | ||
7301 | static void chv_compute_dpll(struct intel_crtc *crtc, | |
7302 | struct intel_crtc_state *pipe_config) | |
7303 | { | |
7304 | pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV | | |
7305 | DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS; | |
7306 | if (crtc->pipe != PIPE_A) | |
7307 | pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV; | |
7308 | ||
7309 | /* DPLL not used with DSI, but still need the rest set up */ | |
7310 | if (!pipe_config->has_dsi_encoder) | |
7311 | pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE; | |
7312 | ||
7313 | pipe_config->dpll_hw_state.dpll_md = | |
7314 | (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT; | |
7315 | } | |
7316 | ||
7317 | static void vlv_prepare_pll(struct intel_crtc *crtc, | |
7318 | const struct intel_crtc_state *pipe_config) | |
7319 | { | |
7320 | struct drm_device *dev = crtc->base.dev; | |
7321 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7322 | enum pipe pipe = crtc->pipe; | |
7323 | u32 mdiv; | |
7324 | u32 bestn, bestm1, bestm2, bestp1, bestp2; | |
7325 | u32 coreclk, reg_val; | |
7326 | ||
7327 | /* Enable Refclk */ | |
7328 | I915_WRITE(DPLL(pipe), | |
7329 | pipe_config->dpll_hw_state.dpll & | |
7330 | ~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV)); | |
7331 | ||
7332 | /* No need to actually set up the DPLL with DSI */ | |
7333 | if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0) | |
7334 | return; | |
7335 | ||
7336 | mutex_lock(&dev_priv->sb_lock); | |
7337 | ||
7338 | bestn = pipe_config->dpll.n; | |
7339 | bestm1 = pipe_config->dpll.m1; | |
7340 | bestm2 = pipe_config->dpll.m2; | |
7341 | bestp1 = pipe_config->dpll.p1; | |
7342 | bestp2 = pipe_config->dpll.p2; | |
7343 | ||
7344 | /* See eDP HDMI DPIO driver vbios notes doc */ | |
7345 | ||
7346 | /* PLL B needs special handling */ | |
7347 | if (pipe == PIPE_B) | |
7348 | vlv_pllb_recal_opamp(dev_priv, pipe); | |
7349 | ||
7350 | /* Set up Tx target for periodic Rcomp update */ | |
7351 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f); | |
7352 | ||
7353 | /* Disable target IRef on PLL */ | |
7354 | reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe)); | |
7355 | reg_val &= 0x00ffffff; | |
7356 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val); | |
7357 | ||
7358 | /* Disable fast lock */ | |
7359 | vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610); | |
7360 | ||
7361 | /* Set idtafcrecal before PLL is enabled */ | |
7362 | mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK)); | |
7363 | mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT)); | |
7364 | mdiv |= ((bestn << DPIO_N_SHIFT)); | |
7365 | mdiv |= (1 << DPIO_K_SHIFT); | |
7366 | ||
7367 | /* | |
7368 | * Post divider depends on pixel clock rate, DAC vs digital (and LVDS, | |
7369 | * but we don't support that). | |
7370 | * Note: don't use the DAC post divider as it seems unstable. | |
7371 | */ | |
7372 | mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT); | |
7373 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv); | |
7374 | ||
7375 | mdiv |= DPIO_ENABLE_CALIBRATION; | |
7376 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv); | |
7377 | ||
7378 | /* Set HBR and RBR LPF coefficients */ | |
7379 | if (pipe_config->port_clock == 162000 || | |
7380 | intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) || | |
7381 | intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) | |
7382 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe), | |
7383 | 0x009f0003); | |
7384 | else | |
7385 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe), | |
7386 | 0x00d0000f); | |
7387 | ||
7388 | if (pipe_config->has_dp_encoder) { | |
7389 | /* Use SSC source */ | |
7390 | if (pipe == PIPE_A) | |
7391 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe), | |
7392 | 0x0df40000); | |
7393 | else | |
7394 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe), | |
7395 | 0x0df70000); | |
7396 | } else { /* HDMI or VGA */ | |
7397 | /* Use bend source */ | |
7398 | if (pipe == PIPE_A) | |
7399 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe), | |
7400 | 0x0df70000); | |
7401 | else | |
7402 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe), | |
7403 | 0x0df40000); | |
7404 | } | |
7405 | ||
7406 | coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe)); | |
7407 | coreclk = (coreclk & 0x0000ff00) | 0x01c00000; | |
7408 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) || | |
7409 | intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) | |
7410 | coreclk |= 0x01000000; | |
7411 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk); | |
7412 | ||
7413 | vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000); | |
7414 | mutex_unlock(&dev_priv->sb_lock); | |
7415 | } | |
7416 | ||
7417 | static void chv_prepare_pll(struct intel_crtc *crtc, | |
7418 | const struct intel_crtc_state *pipe_config) | |
7419 | { | |
7420 | struct drm_device *dev = crtc->base.dev; | |
7421 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7422 | enum pipe pipe = crtc->pipe; | |
7423 | enum dpio_channel port = vlv_pipe_to_channel(pipe); | |
7424 | u32 loopfilter, tribuf_calcntr; | |
7425 | u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac; | |
7426 | u32 dpio_val; | |
7427 | int vco; | |
7428 | ||
7429 | /* Enable Refclk and SSC */ | |
7430 | I915_WRITE(DPLL(pipe), | |
7431 | pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE); | |
7432 | ||
7433 | /* No need to actually set up the DPLL with DSI */ | |
7434 | if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0) | |
7435 | return; | |
7436 | ||
7437 | bestn = pipe_config->dpll.n; | |
7438 | bestm2_frac = pipe_config->dpll.m2 & 0x3fffff; | |
7439 | bestm1 = pipe_config->dpll.m1; | |
7440 | bestm2 = pipe_config->dpll.m2 >> 22; | |
7441 | bestp1 = pipe_config->dpll.p1; | |
7442 | bestp2 = pipe_config->dpll.p2; | |
7443 | vco = pipe_config->dpll.vco; | |
7444 | dpio_val = 0; | |
7445 | loopfilter = 0; | |
7446 | ||
7447 | mutex_lock(&dev_priv->sb_lock); | |
7448 | ||
7449 | /* p1 and p2 divider */ | |
7450 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port), | |
7451 | 5 << DPIO_CHV_S1_DIV_SHIFT | | |
7452 | bestp1 << DPIO_CHV_P1_DIV_SHIFT | | |
7453 | bestp2 << DPIO_CHV_P2_DIV_SHIFT | | |
7454 | 1 << DPIO_CHV_K_DIV_SHIFT); | |
7455 | ||
7456 | /* Feedback post-divider - m2 */ | |
7457 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2); | |
7458 | ||
7459 | /* Feedback refclk divider - n and m1 */ | |
7460 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port), | |
7461 | DPIO_CHV_M1_DIV_BY_2 | | |
7462 | 1 << DPIO_CHV_N_DIV_SHIFT); | |
7463 | ||
7464 | /* M2 fraction division */ | |
7465 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac); | |
7466 | ||
7467 | /* M2 fraction division enable */ | |
7468 | dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port)); | |
7469 | dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN); | |
7470 | dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT); | |
7471 | if (bestm2_frac) | |
7472 | dpio_val |= DPIO_CHV_FRAC_DIV_EN; | |
7473 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val); | |
7474 | ||
7475 | /* Program digital lock detect threshold */ | |
7476 | dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port)); | |
7477 | dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK | | |
7478 | DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE); | |
7479 | dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT); | |
7480 | if (!bestm2_frac) | |
7481 | dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE; | |
7482 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val); | |
7483 | ||
7484 | /* Loop filter */ | |
7485 | if (vco == 5400000) { | |
7486 | loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT); | |
7487 | loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT); | |
7488 | loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT); | |
7489 | tribuf_calcntr = 0x9; | |
7490 | } else if (vco <= 6200000) { | |
7491 | loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT); | |
7492 | loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT); | |
7493 | loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT); | |
7494 | tribuf_calcntr = 0x9; | |
7495 | } else if (vco <= 6480000) { | |
7496 | loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT); | |
7497 | loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT); | |
7498 | loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT); | |
7499 | tribuf_calcntr = 0x8; | |
7500 | } else { | |
7501 | /* Not supported. Apply the same limits as in the max case */ | |
7502 | loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT); | |
7503 | loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT); | |
7504 | loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT); | |
7505 | tribuf_calcntr = 0; | |
7506 | } | |
7507 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter); | |
7508 | ||
7509 | dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port)); | |
7510 | dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK; | |
7511 | dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT); | |
7512 | vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val); | |
7513 | ||
7514 | /* AFC Recal */ | |
7515 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), | |
7516 | vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) | | |
7517 | DPIO_AFC_RECAL); | |
7518 | ||
7519 | mutex_unlock(&dev_priv->sb_lock); | |
7520 | } | |
7521 | ||
7522 | /** | |
7523 | * vlv_force_pll_on - forcibly enable just the PLL | |
7524 | * @dev_priv: i915 private structure | |
7525 | * @pipe: pipe PLL to enable | |
7526 | * @dpll: PLL configuration | |
7527 | * | |
7528 | * Enable the PLL for @pipe using the supplied @dpll config. To be used | |
7529 | * in cases where we need the PLL enabled even when @pipe is not going to | |
7530 | * be enabled. | |
7531 | */ | |
7532 | int vlv_force_pll_on(struct drm_device *dev, enum pipe pipe, | |
7533 | const struct dpll *dpll) | |
7534 | { | |
7535 | struct intel_crtc *crtc = | |
7536 | to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe)); | |
7537 | struct intel_crtc_state *pipe_config; | |
7538 | ||
7539 | pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL); | |
7540 | if (!pipe_config) | |
7541 | return -ENOMEM; | |
7542 | ||
7543 | pipe_config->base.crtc = &crtc->base; | |
7544 | pipe_config->pixel_multiplier = 1; | |
7545 | pipe_config->dpll = *dpll; | |
7546 | ||
7547 | if (IS_CHERRYVIEW(dev)) { | |
7548 | chv_compute_dpll(crtc, pipe_config); | |
7549 | chv_prepare_pll(crtc, pipe_config); | |
7550 | chv_enable_pll(crtc, pipe_config); | |
7551 | } else { | |
7552 | vlv_compute_dpll(crtc, pipe_config); | |
7553 | vlv_prepare_pll(crtc, pipe_config); | |
7554 | vlv_enable_pll(crtc, pipe_config); | |
7555 | } | |
7556 | ||
7557 | kfree(pipe_config); | |
7558 | ||
7559 | return 0; | |
7560 | } | |
7561 | ||
7562 | /** | |
7563 | * vlv_force_pll_off - forcibly disable just the PLL | |
7564 | * @dev_priv: i915 private structure | |
7565 | * @pipe: pipe PLL to disable | |
7566 | * | |
7567 | * Disable the PLL for @pipe. To be used in cases where we need | |
7568 | * the PLL enabled even when @pipe is not going to be enabled. | |
7569 | */ | |
7570 | void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe) | |
7571 | { | |
7572 | if (IS_CHERRYVIEW(dev)) | |
7573 | chv_disable_pll(to_i915(dev), pipe); | |
7574 | else | |
7575 | vlv_disable_pll(to_i915(dev), pipe); | |
7576 | } | |
7577 | ||
7578 | static void i9xx_compute_dpll(struct intel_crtc *crtc, | |
7579 | struct intel_crtc_state *crtc_state, | |
7580 | struct dpll *reduced_clock) | |
7581 | { | |
7582 | struct drm_device *dev = crtc->base.dev; | |
7583 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7584 | u32 dpll; | |
7585 | bool is_sdvo; | |
7586 | struct dpll *clock = &crtc_state->dpll; | |
7587 | ||
7588 | i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock); | |
7589 | ||
7590 | is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) || | |
7591 | intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI); | |
7592 | ||
7593 | dpll = DPLL_VGA_MODE_DIS; | |
7594 | ||
7595 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) | |
7596 | dpll |= DPLLB_MODE_LVDS; | |
7597 | else | |
7598 | dpll |= DPLLB_MODE_DAC_SERIAL; | |
7599 | ||
7600 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) { | |
7601 | dpll |= (crtc_state->pixel_multiplier - 1) | |
7602 | << SDVO_MULTIPLIER_SHIFT_HIRES; | |
7603 | } | |
7604 | ||
7605 | if (is_sdvo) | |
7606 | dpll |= DPLL_SDVO_HIGH_SPEED; | |
7607 | ||
7608 | if (crtc_state->has_dp_encoder) | |
7609 | dpll |= DPLL_SDVO_HIGH_SPEED; | |
7610 | ||
7611 | /* compute bitmask from p1 value */ | |
7612 | if (IS_PINEVIEW(dev)) | |
7613 | dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW; | |
7614 | else { | |
7615 | dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT; | |
7616 | if (IS_G4X(dev) && reduced_clock) | |
7617 | dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT; | |
7618 | } | |
7619 | switch (clock->p2) { | |
7620 | case 5: | |
7621 | dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5; | |
7622 | break; | |
7623 | case 7: | |
7624 | dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7; | |
7625 | break; | |
7626 | case 10: | |
7627 | dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10; | |
7628 | break; | |
7629 | case 14: | |
7630 | dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14; | |
7631 | break; | |
7632 | } | |
7633 | if (INTEL_INFO(dev)->gen >= 4) | |
7634 | dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT); | |
7635 | ||
7636 | if (crtc_state->sdvo_tv_clock) | |
7637 | dpll |= PLL_REF_INPUT_TVCLKINBC; | |
7638 | else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) && | |
7639 | intel_panel_use_ssc(dev_priv)) | |
7640 | dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN; | |
7641 | else | |
7642 | dpll |= PLL_REF_INPUT_DREFCLK; | |
7643 | ||
7644 | dpll |= DPLL_VCO_ENABLE; | |
7645 | crtc_state->dpll_hw_state.dpll = dpll; | |
7646 | ||
7647 | if (INTEL_INFO(dev)->gen >= 4) { | |
7648 | u32 dpll_md = (crtc_state->pixel_multiplier - 1) | |
7649 | << DPLL_MD_UDI_MULTIPLIER_SHIFT; | |
7650 | crtc_state->dpll_hw_state.dpll_md = dpll_md; | |
7651 | } | |
7652 | } | |
7653 | ||
7654 | static void i8xx_compute_dpll(struct intel_crtc *crtc, | |
7655 | struct intel_crtc_state *crtc_state, | |
7656 | struct dpll *reduced_clock) | |
7657 | { | |
7658 | struct drm_device *dev = crtc->base.dev; | |
7659 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7660 | u32 dpll; | |
7661 | struct dpll *clock = &crtc_state->dpll; | |
7662 | ||
7663 | i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock); | |
7664 | ||
7665 | dpll = DPLL_VGA_MODE_DIS; | |
7666 | ||
7667 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
7668 | dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT; | |
7669 | } else { | |
7670 | if (clock->p1 == 2) | |
7671 | dpll |= PLL_P1_DIVIDE_BY_TWO; | |
7672 | else | |
7673 | dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT; | |
7674 | if (clock->p2 == 4) | |
7675 | dpll |= PLL_P2_DIVIDE_BY_4; | |
7676 | } | |
7677 | ||
7678 | if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO)) | |
7679 | dpll |= DPLL_DVO_2X_MODE; | |
7680 | ||
7681 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) && | |
7682 | intel_panel_use_ssc(dev_priv)) | |
7683 | dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN; | |
7684 | else | |
7685 | dpll |= PLL_REF_INPUT_DREFCLK; | |
7686 | ||
7687 | dpll |= DPLL_VCO_ENABLE; | |
7688 | crtc_state->dpll_hw_state.dpll = dpll; | |
7689 | } | |
7690 | ||
7691 | static void intel_set_pipe_timings(struct intel_crtc *intel_crtc) | |
7692 | { | |
7693 | struct drm_device *dev = intel_crtc->base.dev; | |
7694 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7695 | enum pipe pipe = intel_crtc->pipe; | |
7696 | enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder; | |
7697 | const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode; | |
7698 | uint32_t crtc_vtotal, crtc_vblank_end; | |
7699 | int vsyncshift = 0; | |
7700 | ||
7701 | /* We need to be careful not to changed the adjusted mode, for otherwise | |
7702 | * the hw state checker will get angry at the mismatch. */ | |
7703 | crtc_vtotal = adjusted_mode->crtc_vtotal; | |
7704 | crtc_vblank_end = adjusted_mode->crtc_vblank_end; | |
7705 | ||
7706 | if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) { | |
7707 | /* the chip adds 2 halflines automatically */ | |
7708 | crtc_vtotal -= 1; | |
7709 | crtc_vblank_end -= 1; | |
7710 | ||
7711 | if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO)) | |
7712 | vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2; | |
7713 | else | |
7714 | vsyncshift = adjusted_mode->crtc_hsync_start - | |
7715 | adjusted_mode->crtc_htotal / 2; | |
7716 | if (vsyncshift < 0) | |
7717 | vsyncshift += adjusted_mode->crtc_htotal; | |
7718 | } | |
7719 | ||
7720 | if (INTEL_INFO(dev)->gen > 3) | |
7721 | I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift); | |
7722 | ||
7723 | I915_WRITE(HTOTAL(cpu_transcoder), | |
7724 | (adjusted_mode->crtc_hdisplay - 1) | | |
7725 | ((adjusted_mode->crtc_htotal - 1) << 16)); | |
7726 | I915_WRITE(HBLANK(cpu_transcoder), | |
7727 | (adjusted_mode->crtc_hblank_start - 1) | | |
7728 | ((adjusted_mode->crtc_hblank_end - 1) << 16)); | |
7729 | I915_WRITE(HSYNC(cpu_transcoder), | |
7730 | (adjusted_mode->crtc_hsync_start - 1) | | |
7731 | ((adjusted_mode->crtc_hsync_end - 1) << 16)); | |
7732 | ||
7733 | I915_WRITE(VTOTAL(cpu_transcoder), | |
7734 | (adjusted_mode->crtc_vdisplay - 1) | | |
7735 | ((crtc_vtotal - 1) << 16)); | |
7736 | I915_WRITE(VBLANK(cpu_transcoder), | |
7737 | (adjusted_mode->crtc_vblank_start - 1) | | |
7738 | ((crtc_vblank_end - 1) << 16)); | |
7739 | I915_WRITE(VSYNC(cpu_transcoder), | |
7740 | (adjusted_mode->crtc_vsync_start - 1) | | |
7741 | ((adjusted_mode->crtc_vsync_end - 1) << 16)); | |
7742 | ||
7743 | /* Workaround: when the EDP input selection is B, the VTOTAL_B must be | |
7744 | * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is | |
7745 | * documented on the DDI_FUNC_CTL register description, EDP Input Select | |
7746 | * bits. */ | |
7747 | if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP && | |
7748 | (pipe == PIPE_B || pipe == PIPE_C)) | |
7749 | I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder))); | |
7750 | ||
7751 | } | |
7752 | ||
7753 | static void intel_set_pipe_src_size(struct intel_crtc *intel_crtc) | |
7754 | { | |
7755 | struct drm_device *dev = intel_crtc->base.dev; | |
7756 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7757 | enum pipe pipe = intel_crtc->pipe; | |
7758 | ||
7759 | /* pipesrc controls the size that is scaled from, which should | |
7760 | * always be the user's requested size. | |
7761 | */ | |
7762 | I915_WRITE(PIPESRC(pipe), | |
7763 | ((intel_crtc->config->pipe_src_w - 1) << 16) | | |
7764 | (intel_crtc->config->pipe_src_h - 1)); | |
7765 | } | |
7766 | ||
7767 | static void intel_get_pipe_timings(struct intel_crtc *crtc, | |
7768 | struct intel_crtc_state *pipe_config) | |
7769 | { | |
7770 | struct drm_device *dev = crtc->base.dev; | |
7771 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7772 | enum transcoder cpu_transcoder = pipe_config->cpu_transcoder; | |
7773 | uint32_t tmp; | |
7774 | ||
7775 | tmp = I915_READ(HTOTAL(cpu_transcoder)); | |
7776 | pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1; | |
7777 | pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1; | |
7778 | tmp = I915_READ(HBLANK(cpu_transcoder)); | |
7779 | pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1; | |
7780 | pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1; | |
7781 | tmp = I915_READ(HSYNC(cpu_transcoder)); | |
7782 | pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1; | |
7783 | pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1; | |
7784 | ||
7785 | tmp = I915_READ(VTOTAL(cpu_transcoder)); | |
7786 | pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1; | |
7787 | pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1; | |
7788 | tmp = I915_READ(VBLANK(cpu_transcoder)); | |
7789 | pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1; | |
7790 | pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1; | |
7791 | tmp = I915_READ(VSYNC(cpu_transcoder)); | |
7792 | pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1; | |
7793 | pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1; | |
7794 | ||
7795 | if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) { | |
7796 | pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE; | |
7797 | pipe_config->base.adjusted_mode.crtc_vtotal += 1; | |
7798 | pipe_config->base.adjusted_mode.crtc_vblank_end += 1; | |
7799 | } | |
7800 | } | |
7801 | ||
7802 | static void intel_get_pipe_src_size(struct intel_crtc *crtc, | |
7803 | struct intel_crtc_state *pipe_config) | |
7804 | { | |
7805 | struct drm_device *dev = crtc->base.dev; | |
7806 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7807 | u32 tmp; | |
7808 | ||
7809 | tmp = I915_READ(PIPESRC(crtc->pipe)); | |
7810 | pipe_config->pipe_src_h = (tmp & 0xffff) + 1; | |
7811 | pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1; | |
7812 | ||
7813 | pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h; | |
7814 | pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w; | |
7815 | } | |
7816 | ||
7817 | void intel_mode_from_pipe_config(struct drm_display_mode *mode, | |
7818 | struct intel_crtc_state *pipe_config) | |
7819 | { | |
7820 | mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay; | |
7821 | mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal; | |
7822 | mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start; | |
7823 | mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end; | |
7824 | ||
7825 | mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay; | |
7826 | mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal; | |
7827 | mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start; | |
7828 | mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end; | |
7829 | ||
7830 | mode->flags = pipe_config->base.adjusted_mode.flags; | |
7831 | mode->type = DRM_MODE_TYPE_DRIVER; | |
7832 | ||
7833 | mode->clock = pipe_config->base.adjusted_mode.crtc_clock; | |
7834 | mode->flags |= pipe_config->base.adjusted_mode.flags; | |
7835 | ||
7836 | mode->hsync = drm_mode_hsync(mode); | |
7837 | mode->vrefresh = drm_mode_vrefresh(mode); | |
7838 | drm_mode_set_name(mode); | |
7839 | } | |
7840 | ||
7841 | static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc) | |
7842 | { | |
7843 | struct drm_device *dev = intel_crtc->base.dev; | |
7844 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7845 | uint32_t pipeconf; | |
7846 | ||
7847 | pipeconf = 0; | |
7848 | ||
7849 | if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) || | |
7850 | (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)) | |
7851 | pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE; | |
7852 | ||
7853 | if (intel_crtc->config->double_wide) | |
7854 | pipeconf |= PIPECONF_DOUBLE_WIDE; | |
7855 | ||
7856 | /* only g4x and later have fancy bpc/dither controls */ | |
7857 | if (IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
7858 | /* Bspec claims that we can't use dithering for 30bpp pipes. */ | |
7859 | if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30) | |
7860 | pipeconf |= PIPECONF_DITHER_EN | | |
7861 | PIPECONF_DITHER_TYPE_SP; | |
7862 | ||
7863 | switch (intel_crtc->config->pipe_bpp) { | |
7864 | case 18: | |
7865 | pipeconf |= PIPECONF_6BPC; | |
7866 | break; | |
7867 | case 24: | |
7868 | pipeconf |= PIPECONF_8BPC; | |
7869 | break; | |
7870 | case 30: | |
7871 | pipeconf |= PIPECONF_10BPC; | |
7872 | break; | |
7873 | default: | |
7874 | /* Case prevented by intel_choose_pipe_bpp_dither. */ | |
7875 | BUG(); | |
7876 | } | |
7877 | } | |
7878 | ||
7879 | if (HAS_PIPE_CXSR(dev)) { | |
7880 | if (intel_crtc->lowfreq_avail) { | |
7881 | DRM_DEBUG_KMS("enabling CxSR downclocking\n"); | |
7882 | pipeconf |= PIPECONF_CXSR_DOWNCLOCK; | |
7883 | } else { | |
7884 | DRM_DEBUG_KMS("disabling CxSR downclocking\n"); | |
7885 | } | |
7886 | } | |
7887 | ||
7888 | if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { | |
7889 | if (INTEL_INFO(dev)->gen < 4 || | |
7890 | intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO)) | |
7891 | pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION; | |
7892 | else | |
7893 | pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT; | |
7894 | } else | |
7895 | pipeconf |= PIPECONF_PROGRESSIVE; | |
7896 | ||
7897 | if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) && | |
7898 | intel_crtc->config->limited_color_range) | |
7899 | pipeconf |= PIPECONF_COLOR_RANGE_SELECT; | |
7900 | ||
7901 | I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf); | |
7902 | POSTING_READ(PIPECONF(intel_crtc->pipe)); | |
7903 | } | |
7904 | ||
7905 | static int i8xx_crtc_compute_clock(struct intel_crtc *crtc, | |
7906 | struct intel_crtc_state *crtc_state) | |
7907 | { | |
7908 | struct drm_device *dev = crtc->base.dev; | |
7909 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7910 | const struct intel_limit *limit; | |
7911 | int refclk = 48000; | |
7912 | ||
7913 | memset(&crtc_state->dpll_hw_state, 0, | |
7914 | sizeof(crtc_state->dpll_hw_state)); | |
7915 | ||
7916 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
7917 | if (intel_panel_use_ssc(dev_priv)) { | |
7918 | refclk = dev_priv->vbt.lvds_ssc_freq; | |
7919 | DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk); | |
7920 | } | |
7921 | ||
7922 | limit = &intel_limits_i8xx_lvds; | |
7923 | } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO)) { | |
7924 | limit = &intel_limits_i8xx_dvo; | |
7925 | } else { | |
7926 | limit = &intel_limits_i8xx_dac; | |
7927 | } | |
7928 | ||
7929 | if (!crtc_state->clock_set && | |
7930 | !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
7931 | refclk, NULL, &crtc_state->dpll)) { | |
7932 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
7933 | return -EINVAL; | |
7934 | } | |
7935 | ||
7936 | i8xx_compute_dpll(crtc, crtc_state, NULL); | |
7937 | ||
7938 | return 0; | |
7939 | } | |
7940 | ||
7941 | static int g4x_crtc_compute_clock(struct intel_crtc *crtc, | |
7942 | struct intel_crtc_state *crtc_state) | |
7943 | { | |
7944 | struct drm_device *dev = crtc->base.dev; | |
7945 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7946 | const struct intel_limit *limit; | |
7947 | int refclk = 96000; | |
7948 | ||
7949 | memset(&crtc_state->dpll_hw_state, 0, | |
7950 | sizeof(crtc_state->dpll_hw_state)); | |
7951 | ||
7952 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
7953 | if (intel_panel_use_ssc(dev_priv)) { | |
7954 | refclk = dev_priv->vbt.lvds_ssc_freq; | |
7955 | DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk); | |
7956 | } | |
7957 | ||
7958 | if (intel_is_dual_link_lvds(dev)) | |
7959 | limit = &intel_limits_g4x_dual_channel_lvds; | |
7960 | else | |
7961 | limit = &intel_limits_g4x_single_channel_lvds; | |
7962 | } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) || | |
7963 | intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) { | |
7964 | limit = &intel_limits_g4x_hdmi; | |
7965 | } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) { | |
7966 | limit = &intel_limits_g4x_sdvo; | |
7967 | } else { | |
7968 | /* The option is for other outputs */ | |
7969 | limit = &intel_limits_i9xx_sdvo; | |
7970 | } | |
7971 | ||
7972 | if (!crtc_state->clock_set && | |
7973 | !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
7974 | refclk, NULL, &crtc_state->dpll)) { | |
7975 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
7976 | return -EINVAL; | |
7977 | } | |
7978 | ||
7979 | i9xx_compute_dpll(crtc, crtc_state, NULL); | |
7980 | ||
7981 | return 0; | |
7982 | } | |
7983 | ||
7984 | static int pnv_crtc_compute_clock(struct intel_crtc *crtc, | |
7985 | struct intel_crtc_state *crtc_state) | |
7986 | { | |
7987 | struct drm_device *dev = crtc->base.dev; | |
7988 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7989 | const struct intel_limit *limit; | |
7990 | int refclk = 96000; | |
7991 | ||
7992 | memset(&crtc_state->dpll_hw_state, 0, | |
7993 | sizeof(crtc_state->dpll_hw_state)); | |
7994 | ||
7995 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
7996 | if (intel_panel_use_ssc(dev_priv)) { | |
7997 | refclk = dev_priv->vbt.lvds_ssc_freq; | |
7998 | DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk); | |
7999 | } | |
8000 | ||
8001 | limit = &intel_limits_pineview_lvds; | |
8002 | } else { | |
8003 | limit = &intel_limits_pineview_sdvo; | |
8004 | } | |
8005 | ||
8006 | if (!crtc_state->clock_set && | |
8007 | !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
8008 | refclk, NULL, &crtc_state->dpll)) { | |
8009 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
8010 | return -EINVAL; | |
8011 | } | |
8012 | ||
8013 | i9xx_compute_dpll(crtc, crtc_state, NULL); | |
8014 | ||
8015 | return 0; | |
8016 | } | |
8017 | ||
8018 | static int i9xx_crtc_compute_clock(struct intel_crtc *crtc, | |
8019 | struct intel_crtc_state *crtc_state) | |
8020 | { | |
8021 | struct drm_device *dev = crtc->base.dev; | |
8022 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8023 | const struct intel_limit *limit; | |
8024 | int refclk = 96000; | |
8025 | ||
8026 | memset(&crtc_state->dpll_hw_state, 0, | |
8027 | sizeof(crtc_state->dpll_hw_state)); | |
8028 | ||
8029 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
8030 | if (intel_panel_use_ssc(dev_priv)) { | |
8031 | refclk = dev_priv->vbt.lvds_ssc_freq; | |
8032 | DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk); | |
8033 | } | |
8034 | ||
8035 | limit = &intel_limits_i9xx_lvds; | |
8036 | } else { | |
8037 | limit = &intel_limits_i9xx_sdvo; | |
8038 | } | |
8039 | ||
8040 | if (!crtc_state->clock_set && | |
8041 | !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
8042 | refclk, NULL, &crtc_state->dpll)) { | |
8043 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
8044 | return -EINVAL; | |
8045 | } | |
8046 | ||
8047 | i9xx_compute_dpll(crtc, crtc_state, NULL); | |
8048 | ||
8049 | return 0; | |
8050 | } | |
8051 | ||
8052 | static int chv_crtc_compute_clock(struct intel_crtc *crtc, | |
8053 | struct intel_crtc_state *crtc_state) | |
8054 | { | |
8055 | int refclk = 100000; | |
8056 | const struct intel_limit *limit = &intel_limits_chv; | |
8057 | ||
8058 | memset(&crtc_state->dpll_hw_state, 0, | |
8059 | sizeof(crtc_state->dpll_hw_state)); | |
8060 | ||
8061 | if (!crtc_state->clock_set && | |
8062 | !chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
8063 | refclk, NULL, &crtc_state->dpll)) { | |
8064 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
8065 | return -EINVAL; | |
8066 | } | |
8067 | ||
8068 | chv_compute_dpll(crtc, crtc_state); | |
8069 | ||
8070 | return 0; | |
8071 | } | |
8072 | ||
8073 | static int vlv_crtc_compute_clock(struct intel_crtc *crtc, | |
8074 | struct intel_crtc_state *crtc_state) | |
8075 | { | |
8076 | int refclk = 100000; | |
8077 | const struct intel_limit *limit = &intel_limits_vlv; | |
8078 | ||
8079 | memset(&crtc_state->dpll_hw_state, 0, | |
8080 | sizeof(crtc_state->dpll_hw_state)); | |
8081 | ||
8082 | if (!crtc_state->clock_set && | |
8083 | !vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
8084 | refclk, NULL, &crtc_state->dpll)) { | |
8085 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
8086 | return -EINVAL; | |
8087 | } | |
8088 | ||
8089 | vlv_compute_dpll(crtc, crtc_state); | |
8090 | ||
8091 | return 0; | |
8092 | } | |
8093 | ||
8094 | static void i9xx_get_pfit_config(struct intel_crtc *crtc, | |
8095 | struct intel_crtc_state *pipe_config) | |
8096 | { | |
8097 | struct drm_device *dev = crtc->base.dev; | |
8098 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8099 | uint32_t tmp; | |
8100 | ||
8101 | if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev))) | |
8102 | return; | |
8103 | ||
8104 | tmp = I915_READ(PFIT_CONTROL); | |
8105 | if (!(tmp & PFIT_ENABLE)) | |
8106 | return; | |
8107 | ||
8108 | /* Check whether the pfit is attached to our pipe. */ | |
8109 | if (INTEL_INFO(dev)->gen < 4) { | |
8110 | if (crtc->pipe != PIPE_B) | |
8111 | return; | |
8112 | } else { | |
8113 | if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT)) | |
8114 | return; | |
8115 | } | |
8116 | ||
8117 | pipe_config->gmch_pfit.control = tmp; | |
8118 | pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS); | |
8119 | } | |
8120 | ||
8121 | static void vlv_crtc_clock_get(struct intel_crtc *crtc, | |
8122 | struct intel_crtc_state *pipe_config) | |
8123 | { | |
8124 | struct drm_device *dev = crtc->base.dev; | |
8125 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8126 | int pipe = pipe_config->cpu_transcoder; | |
8127 | struct dpll clock; | |
8128 | u32 mdiv; | |
8129 | int refclk = 100000; | |
8130 | ||
8131 | /* In case of DSI, DPLL will not be used */ | |
8132 | if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0) | |
8133 | return; | |
8134 | ||
8135 | mutex_lock(&dev_priv->sb_lock); | |
8136 | mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe)); | |
8137 | mutex_unlock(&dev_priv->sb_lock); | |
8138 | ||
8139 | clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7; | |
8140 | clock.m2 = mdiv & DPIO_M2DIV_MASK; | |
8141 | clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf; | |
8142 | clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7; | |
8143 | clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f; | |
8144 | ||
8145 | pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock); | |
8146 | } | |
8147 | ||
8148 | static void | |
8149 | i9xx_get_initial_plane_config(struct intel_crtc *crtc, | |
8150 | struct intel_initial_plane_config *plane_config) | |
8151 | { | |
8152 | struct drm_device *dev = crtc->base.dev; | |
8153 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8154 | u32 val, base, offset; | |
8155 | int pipe = crtc->pipe, plane = crtc->plane; | |
8156 | int fourcc, pixel_format; | |
8157 | unsigned int aligned_height; | |
8158 | struct drm_framebuffer *fb; | |
8159 | struct intel_framebuffer *intel_fb; | |
8160 | ||
8161 | val = I915_READ(DSPCNTR(plane)); | |
8162 | if (!(val & DISPLAY_PLANE_ENABLE)) | |
8163 | return; | |
8164 | ||
8165 | intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL); | |
8166 | if (!intel_fb) { | |
8167 | DRM_DEBUG_KMS("failed to alloc fb\n"); | |
8168 | return; | |
8169 | } | |
8170 | ||
8171 | fb = &intel_fb->base; | |
8172 | ||
8173 | if (INTEL_INFO(dev)->gen >= 4) { | |
8174 | if (val & DISPPLANE_TILED) { | |
8175 | plane_config->tiling = I915_TILING_X; | |
8176 | fb->modifier[0] = I915_FORMAT_MOD_X_TILED; | |
8177 | } | |
8178 | } | |
8179 | ||
8180 | pixel_format = val & DISPPLANE_PIXFORMAT_MASK; | |
8181 | fourcc = i9xx_format_to_fourcc(pixel_format); | |
8182 | fb->pixel_format = fourcc; | |
8183 | fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8; | |
8184 | ||
8185 | if (INTEL_INFO(dev)->gen >= 4) { | |
8186 | if (plane_config->tiling) | |
8187 | offset = I915_READ(DSPTILEOFF(plane)); | |
8188 | else | |
8189 | offset = I915_READ(DSPLINOFF(plane)); | |
8190 | base = I915_READ(DSPSURF(plane)) & 0xfffff000; | |
8191 | } else { | |
8192 | base = I915_READ(DSPADDR(plane)); | |
8193 | } | |
8194 | plane_config->base = base; | |
8195 | ||
8196 | val = I915_READ(PIPESRC(pipe)); | |
8197 | fb->width = ((val >> 16) & 0xfff) + 1; | |
8198 | fb->height = ((val >> 0) & 0xfff) + 1; | |
8199 | ||
8200 | val = I915_READ(DSPSTRIDE(pipe)); | |
8201 | fb->pitches[0] = val & 0xffffffc0; | |
8202 | ||
8203 | aligned_height = intel_fb_align_height(dev, fb->height, | |
8204 | fb->pixel_format, | |
8205 | fb->modifier[0]); | |
8206 | ||
8207 | plane_config->size = fb->pitches[0] * aligned_height; | |
8208 | ||
8209 | DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n", | |
8210 | pipe_name(pipe), plane, fb->width, fb->height, | |
8211 | fb->bits_per_pixel, base, fb->pitches[0], | |
8212 | plane_config->size); | |
8213 | ||
8214 | plane_config->fb = intel_fb; | |
8215 | } | |
8216 | ||
8217 | static void chv_crtc_clock_get(struct intel_crtc *crtc, | |
8218 | struct intel_crtc_state *pipe_config) | |
8219 | { | |
8220 | struct drm_device *dev = crtc->base.dev; | |
8221 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8222 | int pipe = pipe_config->cpu_transcoder; | |
8223 | enum dpio_channel port = vlv_pipe_to_channel(pipe); | |
8224 | struct dpll clock; | |
8225 | u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3; | |
8226 | int refclk = 100000; | |
8227 | ||
8228 | /* In case of DSI, DPLL will not be used */ | |
8229 | if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0) | |
8230 | return; | |
8231 | ||
8232 | mutex_lock(&dev_priv->sb_lock); | |
8233 | cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port)); | |
8234 | pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port)); | |
8235 | pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port)); | |
8236 | pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port)); | |
8237 | pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port)); | |
8238 | mutex_unlock(&dev_priv->sb_lock); | |
8239 | ||
8240 | clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0; | |
8241 | clock.m2 = (pll_dw0 & 0xff) << 22; | |
8242 | if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN) | |
8243 | clock.m2 |= pll_dw2 & 0x3fffff; | |
8244 | clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf; | |
8245 | clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7; | |
8246 | clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f; | |
8247 | ||
8248 | pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock); | |
8249 | } | |
8250 | ||
8251 | static bool i9xx_get_pipe_config(struct intel_crtc *crtc, | |
8252 | struct intel_crtc_state *pipe_config) | |
8253 | { | |
8254 | struct drm_device *dev = crtc->base.dev; | |
8255 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8256 | enum intel_display_power_domain power_domain; | |
8257 | uint32_t tmp; | |
8258 | bool ret; | |
8259 | ||
8260 | power_domain = POWER_DOMAIN_PIPE(crtc->pipe); | |
8261 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
8262 | return false; | |
8263 | ||
8264 | pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe; | |
8265 | pipe_config->shared_dpll = NULL; | |
8266 | ||
8267 | ret = false; | |
8268 | ||
8269 | tmp = I915_READ(PIPECONF(crtc->pipe)); | |
8270 | if (!(tmp & PIPECONF_ENABLE)) | |
8271 | goto out; | |
8272 | ||
8273 | if (IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
8274 | switch (tmp & PIPECONF_BPC_MASK) { | |
8275 | case PIPECONF_6BPC: | |
8276 | pipe_config->pipe_bpp = 18; | |
8277 | break; | |
8278 | case PIPECONF_8BPC: | |
8279 | pipe_config->pipe_bpp = 24; | |
8280 | break; | |
8281 | case PIPECONF_10BPC: | |
8282 | pipe_config->pipe_bpp = 30; | |
8283 | break; | |
8284 | default: | |
8285 | break; | |
8286 | } | |
8287 | } | |
8288 | ||
8289 | if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) && | |
8290 | (tmp & PIPECONF_COLOR_RANGE_SELECT)) | |
8291 | pipe_config->limited_color_range = true; | |
8292 | ||
8293 | if (INTEL_INFO(dev)->gen < 4) | |
8294 | pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE; | |
8295 | ||
8296 | intel_get_pipe_timings(crtc, pipe_config); | |
8297 | intel_get_pipe_src_size(crtc, pipe_config); | |
8298 | ||
8299 | i9xx_get_pfit_config(crtc, pipe_config); | |
8300 | ||
8301 | if (INTEL_INFO(dev)->gen >= 4) { | |
8302 | /* No way to read it out on pipes B and C */ | |
8303 | if (IS_CHERRYVIEW(dev) && crtc->pipe != PIPE_A) | |
8304 | tmp = dev_priv->chv_dpll_md[crtc->pipe]; | |
8305 | else | |
8306 | tmp = I915_READ(DPLL_MD(crtc->pipe)); | |
8307 | pipe_config->pixel_multiplier = | |
8308 | ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK) | |
8309 | >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1; | |
8310 | pipe_config->dpll_hw_state.dpll_md = tmp; | |
8311 | } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) { | |
8312 | tmp = I915_READ(DPLL(crtc->pipe)); | |
8313 | pipe_config->pixel_multiplier = | |
8314 | ((tmp & SDVO_MULTIPLIER_MASK) | |
8315 | >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1; | |
8316 | } else { | |
8317 | /* Note that on i915G/GM the pixel multiplier is in the sdvo | |
8318 | * port and will be fixed up in the encoder->get_config | |
8319 | * function. */ | |
8320 | pipe_config->pixel_multiplier = 1; | |
8321 | } | |
8322 | pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe)); | |
8323 | if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) { | |
8324 | /* | |
8325 | * DPLL_DVO_2X_MODE must be enabled for both DPLLs | |
8326 | * on 830. Filter it out here so that we don't | |
8327 | * report errors due to that. | |
8328 | */ | |
8329 | if (IS_I830(dev)) | |
8330 | pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE; | |
8331 | ||
8332 | pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe)); | |
8333 | pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe)); | |
8334 | } else { | |
8335 | /* Mask out read-only status bits. */ | |
8336 | pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV | | |
8337 | DPLL_PORTC_READY_MASK | | |
8338 | DPLL_PORTB_READY_MASK); | |
8339 | } | |
8340 | ||
8341 | if (IS_CHERRYVIEW(dev)) | |
8342 | chv_crtc_clock_get(crtc, pipe_config); | |
8343 | else if (IS_VALLEYVIEW(dev)) | |
8344 | vlv_crtc_clock_get(crtc, pipe_config); | |
8345 | else | |
8346 | i9xx_crtc_clock_get(crtc, pipe_config); | |
8347 | ||
8348 | /* | |
8349 | * Normally the dotclock is filled in by the encoder .get_config() | |
8350 | * but in case the pipe is enabled w/o any ports we need a sane | |
8351 | * default. | |
8352 | */ | |
8353 | pipe_config->base.adjusted_mode.crtc_clock = | |
8354 | pipe_config->port_clock / pipe_config->pixel_multiplier; | |
8355 | ||
8356 | ret = true; | |
8357 | ||
8358 | out: | |
8359 | intel_display_power_put(dev_priv, power_domain); | |
8360 | ||
8361 | return ret; | |
8362 | } | |
8363 | ||
8364 | static void ironlake_init_pch_refclk(struct drm_device *dev) | |
8365 | { | |
8366 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8367 | struct intel_encoder *encoder; | |
8368 | int i; | |
8369 | u32 val, final; | |
8370 | bool has_lvds = false; | |
8371 | bool has_cpu_edp = false; | |
8372 | bool has_panel = false; | |
8373 | bool has_ck505 = false; | |
8374 | bool can_ssc = false; | |
8375 | bool using_ssc_source = false; | |
8376 | ||
8377 | /* We need to take the global config into account */ | |
8378 | for_each_intel_encoder(dev, encoder) { | |
8379 | switch (encoder->type) { | |
8380 | case INTEL_OUTPUT_LVDS: | |
8381 | has_panel = true; | |
8382 | has_lvds = true; | |
8383 | break; | |
8384 | case INTEL_OUTPUT_EDP: | |
8385 | has_panel = true; | |
8386 | if (enc_to_dig_port(&encoder->base)->port == PORT_A) | |
8387 | has_cpu_edp = true; | |
8388 | break; | |
8389 | default: | |
8390 | break; | |
8391 | } | |
8392 | } | |
8393 | ||
8394 | if (HAS_PCH_IBX(dev)) { | |
8395 | has_ck505 = dev_priv->vbt.display_clock_mode; | |
8396 | can_ssc = has_ck505; | |
8397 | } else { | |
8398 | has_ck505 = false; | |
8399 | can_ssc = true; | |
8400 | } | |
8401 | ||
8402 | /* Check if any DPLLs are using the SSC source */ | |
8403 | for (i = 0; i < dev_priv->num_shared_dpll; i++) { | |
8404 | u32 temp = I915_READ(PCH_DPLL(i)); | |
8405 | ||
8406 | if (!(temp & DPLL_VCO_ENABLE)) | |
8407 | continue; | |
8408 | ||
8409 | if ((temp & PLL_REF_INPUT_MASK) == | |
8410 | PLLB_REF_INPUT_SPREADSPECTRUMIN) { | |
8411 | using_ssc_source = true; | |
8412 | break; | |
8413 | } | |
8414 | } | |
8415 | ||
8416 | DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n", | |
8417 | has_panel, has_lvds, has_ck505, using_ssc_source); | |
8418 | ||
8419 | /* Ironlake: try to setup display ref clock before DPLL | |
8420 | * enabling. This is only under driver's control after | |
8421 | * PCH B stepping, previous chipset stepping should be | |
8422 | * ignoring this setting. | |
8423 | */ | |
8424 | val = I915_READ(PCH_DREF_CONTROL); | |
8425 | ||
8426 | /* As we must carefully and slowly disable/enable each source in turn, | |
8427 | * compute the final state we want first and check if we need to | |
8428 | * make any changes at all. | |
8429 | */ | |
8430 | final = val; | |
8431 | final &= ~DREF_NONSPREAD_SOURCE_MASK; | |
8432 | if (has_ck505) | |
8433 | final |= DREF_NONSPREAD_CK505_ENABLE; | |
8434 | else | |
8435 | final |= DREF_NONSPREAD_SOURCE_ENABLE; | |
8436 | ||
8437 | final &= ~DREF_SSC_SOURCE_MASK; | |
8438 | final &= ~DREF_CPU_SOURCE_OUTPUT_MASK; | |
8439 | final &= ~DREF_SSC1_ENABLE; | |
8440 | ||
8441 | if (has_panel) { | |
8442 | final |= DREF_SSC_SOURCE_ENABLE; | |
8443 | ||
8444 | if (intel_panel_use_ssc(dev_priv) && can_ssc) | |
8445 | final |= DREF_SSC1_ENABLE; | |
8446 | ||
8447 | if (has_cpu_edp) { | |
8448 | if (intel_panel_use_ssc(dev_priv) && can_ssc) | |
8449 | final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD; | |
8450 | else | |
8451 | final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD; | |
8452 | } else | |
8453 | final |= DREF_CPU_SOURCE_OUTPUT_DISABLE; | |
8454 | } else if (using_ssc_source) { | |
8455 | final |= DREF_SSC_SOURCE_ENABLE; | |
8456 | final |= DREF_SSC1_ENABLE; | |
8457 | } | |
8458 | ||
8459 | if (final == val) | |
8460 | return; | |
8461 | ||
8462 | /* Always enable nonspread source */ | |
8463 | val &= ~DREF_NONSPREAD_SOURCE_MASK; | |
8464 | ||
8465 | if (has_ck505) | |
8466 | val |= DREF_NONSPREAD_CK505_ENABLE; | |
8467 | else | |
8468 | val |= DREF_NONSPREAD_SOURCE_ENABLE; | |
8469 | ||
8470 | if (has_panel) { | |
8471 | val &= ~DREF_SSC_SOURCE_MASK; | |
8472 | val |= DREF_SSC_SOURCE_ENABLE; | |
8473 | ||
8474 | /* SSC must be turned on before enabling the CPU output */ | |
8475 | if (intel_panel_use_ssc(dev_priv) && can_ssc) { | |
8476 | DRM_DEBUG_KMS("Using SSC on panel\n"); | |
8477 | val |= DREF_SSC1_ENABLE; | |
8478 | } else | |
8479 | val &= ~DREF_SSC1_ENABLE; | |
8480 | ||
8481 | /* Get SSC going before enabling the outputs */ | |
8482 | I915_WRITE(PCH_DREF_CONTROL, val); | |
8483 | POSTING_READ(PCH_DREF_CONTROL); | |
8484 | udelay(200); | |
8485 | ||
8486 | val &= ~DREF_CPU_SOURCE_OUTPUT_MASK; | |
8487 | ||
8488 | /* Enable CPU source on CPU attached eDP */ | |
8489 | if (has_cpu_edp) { | |
8490 | if (intel_panel_use_ssc(dev_priv) && can_ssc) { | |
8491 | DRM_DEBUG_KMS("Using SSC on eDP\n"); | |
8492 | val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD; | |
8493 | } else | |
8494 | val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD; | |
8495 | } else | |
8496 | val |= DREF_CPU_SOURCE_OUTPUT_DISABLE; | |
8497 | ||
8498 | I915_WRITE(PCH_DREF_CONTROL, val); | |
8499 | POSTING_READ(PCH_DREF_CONTROL); | |
8500 | udelay(200); | |
8501 | } else { | |
8502 | DRM_DEBUG_KMS("Disabling CPU source output\n"); | |
8503 | ||
8504 | val &= ~DREF_CPU_SOURCE_OUTPUT_MASK; | |
8505 | ||
8506 | /* Turn off CPU output */ | |
8507 | val |= DREF_CPU_SOURCE_OUTPUT_DISABLE; | |
8508 | ||
8509 | I915_WRITE(PCH_DREF_CONTROL, val); | |
8510 | POSTING_READ(PCH_DREF_CONTROL); | |
8511 | udelay(200); | |
8512 | ||
8513 | if (!using_ssc_source) { | |
8514 | DRM_DEBUG_KMS("Disabling SSC source\n"); | |
8515 | ||
8516 | /* Turn off the SSC source */ | |
8517 | val &= ~DREF_SSC_SOURCE_MASK; | |
8518 | val |= DREF_SSC_SOURCE_DISABLE; | |
8519 | ||
8520 | /* Turn off SSC1 */ | |
8521 | val &= ~DREF_SSC1_ENABLE; | |
8522 | ||
8523 | I915_WRITE(PCH_DREF_CONTROL, val); | |
8524 | POSTING_READ(PCH_DREF_CONTROL); | |
8525 | udelay(200); | |
8526 | } | |
8527 | } | |
8528 | ||
8529 | BUG_ON(val != final); | |
8530 | } | |
8531 | ||
8532 | static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv) | |
8533 | { | |
8534 | uint32_t tmp; | |
8535 | ||
8536 | tmp = I915_READ(SOUTH_CHICKEN2); | |
8537 | tmp |= FDI_MPHY_IOSFSB_RESET_CTL; | |
8538 | I915_WRITE(SOUTH_CHICKEN2, tmp); | |
8539 | ||
8540 | if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) & | |
8541 | FDI_MPHY_IOSFSB_RESET_STATUS, 100)) | |
8542 | DRM_ERROR("FDI mPHY reset assert timeout\n"); | |
8543 | ||
8544 | tmp = I915_READ(SOUTH_CHICKEN2); | |
8545 | tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL; | |
8546 | I915_WRITE(SOUTH_CHICKEN2, tmp); | |
8547 | ||
8548 | if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) & | |
8549 | FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100)) | |
8550 | DRM_ERROR("FDI mPHY reset de-assert timeout\n"); | |
8551 | } | |
8552 | ||
8553 | /* WaMPhyProgramming:hsw */ | |
8554 | static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv) | |
8555 | { | |
8556 | uint32_t tmp; | |
8557 | ||
8558 | tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY); | |
8559 | tmp &= ~(0xFF << 24); | |
8560 | tmp |= (0x12 << 24); | |
8561 | intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY); | |
8562 | ||
8563 | tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY); | |
8564 | tmp |= (1 << 11); | |
8565 | intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY); | |
8566 | ||
8567 | tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY); | |
8568 | tmp |= (1 << 11); | |
8569 | intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY); | |
8570 | ||
8571 | tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY); | |
8572 | tmp |= (1 << 24) | (1 << 21) | (1 << 18); | |
8573 | intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY); | |
8574 | ||
8575 | tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY); | |
8576 | tmp |= (1 << 24) | (1 << 21) | (1 << 18); | |
8577 | intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY); | |
8578 | ||
8579 | tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY); | |
8580 | tmp &= ~(7 << 13); | |
8581 | tmp |= (5 << 13); | |
8582 | intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY); | |
8583 | ||
8584 | tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY); | |
8585 | tmp &= ~(7 << 13); | |
8586 | tmp |= (5 << 13); | |
8587 | intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY); | |
8588 | ||
8589 | tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY); | |
8590 | tmp &= ~0xFF; | |
8591 | tmp |= 0x1C; | |
8592 | intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY); | |
8593 | ||
8594 | tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY); | |
8595 | tmp &= ~0xFF; | |
8596 | tmp |= 0x1C; | |
8597 | intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY); | |
8598 | ||
8599 | tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY); | |
8600 | tmp &= ~(0xFF << 16); | |
8601 | tmp |= (0x1C << 16); | |
8602 | intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY); | |
8603 | ||
8604 | tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY); | |
8605 | tmp &= ~(0xFF << 16); | |
8606 | tmp |= (0x1C << 16); | |
8607 | intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY); | |
8608 | ||
8609 | tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY); | |
8610 | tmp |= (1 << 27); | |
8611 | intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY); | |
8612 | ||
8613 | tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY); | |
8614 | tmp |= (1 << 27); | |
8615 | intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY); | |
8616 | ||
8617 | tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY); | |
8618 | tmp &= ~(0xF << 28); | |
8619 | tmp |= (4 << 28); | |
8620 | intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY); | |
8621 | ||
8622 | tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY); | |
8623 | tmp &= ~(0xF << 28); | |
8624 | tmp |= (4 << 28); | |
8625 | intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY); | |
8626 | } | |
8627 | ||
8628 | /* Implements 3 different sequences from BSpec chapter "Display iCLK | |
8629 | * Programming" based on the parameters passed: | |
8630 | * - Sequence to enable CLKOUT_DP | |
8631 | * - Sequence to enable CLKOUT_DP without spread | |
8632 | * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O | |
8633 | */ | |
8634 | static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread, | |
8635 | bool with_fdi) | |
8636 | { | |
8637 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8638 | uint32_t reg, tmp; | |
8639 | ||
8640 | if (WARN(with_fdi && !with_spread, "FDI requires downspread\n")) | |
8641 | with_spread = true; | |
8642 | if (WARN(HAS_PCH_LPT_LP(dev) && with_fdi, "LP PCH doesn't have FDI\n")) | |
8643 | with_fdi = false; | |
8644 | ||
8645 | mutex_lock(&dev_priv->sb_lock); | |
8646 | ||
8647 | tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK); | |
8648 | tmp &= ~SBI_SSCCTL_DISABLE; | |
8649 | tmp |= SBI_SSCCTL_PATHALT; | |
8650 | intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK); | |
8651 | ||
8652 | udelay(24); | |
8653 | ||
8654 | if (with_spread) { | |
8655 | tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK); | |
8656 | tmp &= ~SBI_SSCCTL_PATHALT; | |
8657 | intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK); | |
8658 | ||
8659 | if (with_fdi) { | |
8660 | lpt_reset_fdi_mphy(dev_priv); | |
8661 | lpt_program_fdi_mphy(dev_priv); | |
8662 | } | |
8663 | } | |
8664 | ||
8665 | reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0; | |
8666 | tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK); | |
8667 | tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE; | |
8668 | intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK); | |
8669 | ||
8670 | mutex_unlock(&dev_priv->sb_lock); | |
8671 | } | |
8672 | ||
8673 | /* Sequence to disable CLKOUT_DP */ | |
8674 | static void lpt_disable_clkout_dp(struct drm_device *dev) | |
8675 | { | |
8676 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8677 | uint32_t reg, tmp; | |
8678 | ||
8679 | mutex_lock(&dev_priv->sb_lock); | |
8680 | ||
8681 | reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0; | |
8682 | tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK); | |
8683 | tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE; | |
8684 | intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK); | |
8685 | ||
8686 | tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK); | |
8687 | if (!(tmp & SBI_SSCCTL_DISABLE)) { | |
8688 | if (!(tmp & SBI_SSCCTL_PATHALT)) { | |
8689 | tmp |= SBI_SSCCTL_PATHALT; | |
8690 | intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK); | |
8691 | udelay(32); | |
8692 | } | |
8693 | tmp |= SBI_SSCCTL_DISABLE; | |
8694 | intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK); | |
8695 | } | |
8696 | ||
8697 | mutex_unlock(&dev_priv->sb_lock); | |
8698 | } | |
8699 | ||
8700 | #define BEND_IDX(steps) ((50 + (steps)) / 5) | |
8701 | ||
8702 | static const uint16_t sscdivintphase[] = { | |
8703 | [BEND_IDX( 50)] = 0x3B23, | |
8704 | [BEND_IDX( 45)] = 0x3B23, | |
8705 | [BEND_IDX( 40)] = 0x3C23, | |
8706 | [BEND_IDX( 35)] = 0x3C23, | |
8707 | [BEND_IDX( 30)] = 0x3D23, | |
8708 | [BEND_IDX( 25)] = 0x3D23, | |
8709 | [BEND_IDX( 20)] = 0x3E23, | |
8710 | [BEND_IDX( 15)] = 0x3E23, | |
8711 | [BEND_IDX( 10)] = 0x3F23, | |
8712 | [BEND_IDX( 5)] = 0x3F23, | |
8713 | [BEND_IDX( 0)] = 0x0025, | |
8714 | [BEND_IDX( -5)] = 0x0025, | |
8715 | [BEND_IDX(-10)] = 0x0125, | |
8716 | [BEND_IDX(-15)] = 0x0125, | |
8717 | [BEND_IDX(-20)] = 0x0225, | |
8718 | [BEND_IDX(-25)] = 0x0225, | |
8719 | [BEND_IDX(-30)] = 0x0325, | |
8720 | [BEND_IDX(-35)] = 0x0325, | |
8721 | [BEND_IDX(-40)] = 0x0425, | |
8722 | [BEND_IDX(-45)] = 0x0425, | |
8723 | [BEND_IDX(-50)] = 0x0525, | |
8724 | }; | |
8725 | ||
8726 | /* | |
8727 | * Bend CLKOUT_DP | |
8728 | * steps -50 to 50 inclusive, in steps of 5 | |
8729 | * < 0 slow down the clock, > 0 speed up the clock, 0 == no bend (135MHz) | |
8730 | * change in clock period = -(steps / 10) * 5.787 ps | |
8731 | */ | |
8732 | static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv, int steps) | |
8733 | { | |
8734 | uint32_t tmp; | |
8735 | int idx = BEND_IDX(steps); | |
8736 | ||
8737 | if (WARN_ON(steps % 5 != 0)) | |
8738 | return; | |
8739 | ||
8740 | if (WARN_ON(idx >= ARRAY_SIZE(sscdivintphase))) | |
8741 | return; | |
8742 | ||
8743 | mutex_lock(&dev_priv->sb_lock); | |
8744 | ||
8745 | if (steps % 10 != 0) | |
8746 | tmp = 0xAAAAAAAB; | |
8747 | else | |
8748 | tmp = 0x00000000; | |
8749 | intel_sbi_write(dev_priv, SBI_SSCDITHPHASE, tmp, SBI_ICLK); | |
8750 | ||
8751 | tmp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE, SBI_ICLK); | |
8752 | tmp &= 0xffff0000; | |
8753 | tmp |= sscdivintphase[idx]; | |
8754 | intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE, tmp, SBI_ICLK); | |
8755 | ||
8756 | mutex_unlock(&dev_priv->sb_lock); | |
8757 | } | |
8758 | ||
8759 | #undef BEND_IDX | |
8760 | ||
8761 | static void lpt_init_pch_refclk(struct drm_device *dev) | |
8762 | { | |
8763 | struct intel_encoder *encoder; | |
8764 | bool has_vga = false; | |
8765 | ||
8766 | for_each_intel_encoder(dev, encoder) { | |
8767 | switch (encoder->type) { | |
8768 | case INTEL_OUTPUT_ANALOG: | |
8769 | has_vga = true; | |
8770 | break; | |
8771 | default: | |
8772 | break; | |
8773 | } | |
8774 | } | |
8775 | ||
8776 | if (has_vga) { | |
8777 | lpt_bend_clkout_dp(to_i915(dev), 0); | |
8778 | lpt_enable_clkout_dp(dev, true, true); | |
8779 | } else { | |
8780 | lpt_disable_clkout_dp(dev); | |
8781 | } | |
8782 | } | |
8783 | ||
8784 | /* | |
8785 | * Initialize reference clocks when the driver loads | |
8786 | */ | |
8787 | void intel_init_pch_refclk(struct drm_device *dev) | |
8788 | { | |
8789 | if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) | |
8790 | ironlake_init_pch_refclk(dev); | |
8791 | else if (HAS_PCH_LPT(dev)) | |
8792 | lpt_init_pch_refclk(dev); | |
8793 | } | |
8794 | ||
8795 | static void ironlake_set_pipeconf(struct drm_crtc *crtc) | |
8796 | { | |
8797 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
8798 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
8799 | int pipe = intel_crtc->pipe; | |
8800 | uint32_t val; | |
8801 | ||
8802 | val = 0; | |
8803 | ||
8804 | switch (intel_crtc->config->pipe_bpp) { | |
8805 | case 18: | |
8806 | val |= PIPECONF_6BPC; | |
8807 | break; | |
8808 | case 24: | |
8809 | val |= PIPECONF_8BPC; | |
8810 | break; | |
8811 | case 30: | |
8812 | val |= PIPECONF_10BPC; | |
8813 | break; | |
8814 | case 36: | |
8815 | val |= PIPECONF_12BPC; | |
8816 | break; | |
8817 | default: | |
8818 | /* Case prevented by intel_choose_pipe_bpp_dither. */ | |
8819 | BUG(); | |
8820 | } | |
8821 | ||
8822 | if (intel_crtc->config->dither) | |
8823 | val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP); | |
8824 | ||
8825 | if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) | |
8826 | val |= PIPECONF_INTERLACED_ILK; | |
8827 | else | |
8828 | val |= PIPECONF_PROGRESSIVE; | |
8829 | ||
8830 | if (intel_crtc->config->limited_color_range) | |
8831 | val |= PIPECONF_COLOR_RANGE_SELECT; | |
8832 | ||
8833 | I915_WRITE(PIPECONF(pipe), val); | |
8834 | POSTING_READ(PIPECONF(pipe)); | |
8835 | } | |
8836 | ||
8837 | static void haswell_set_pipeconf(struct drm_crtc *crtc) | |
8838 | { | |
8839 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
8840 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
8841 | enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder; | |
8842 | u32 val = 0; | |
8843 | ||
8844 | if (IS_HASWELL(dev_priv) && intel_crtc->config->dither) | |
8845 | val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP); | |
8846 | ||
8847 | if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) | |
8848 | val |= PIPECONF_INTERLACED_ILK; | |
8849 | else | |
8850 | val |= PIPECONF_PROGRESSIVE; | |
8851 | ||
8852 | I915_WRITE(PIPECONF(cpu_transcoder), val); | |
8853 | POSTING_READ(PIPECONF(cpu_transcoder)); | |
8854 | } | |
8855 | ||
8856 | static void haswell_set_pipemisc(struct drm_crtc *crtc) | |
8857 | { | |
8858 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
8859 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
8860 | ||
8861 | if (IS_BROADWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 9) { | |
8862 | u32 val = 0; | |
8863 | ||
8864 | switch (intel_crtc->config->pipe_bpp) { | |
8865 | case 18: | |
8866 | val |= PIPEMISC_DITHER_6_BPC; | |
8867 | break; | |
8868 | case 24: | |
8869 | val |= PIPEMISC_DITHER_8_BPC; | |
8870 | break; | |
8871 | case 30: | |
8872 | val |= PIPEMISC_DITHER_10_BPC; | |
8873 | break; | |
8874 | case 36: | |
8875 | val |= PIPEMISC_DITHER_12_BPC; | |
8876 | break; | |
8877 | default: | |
8878 | /* Case prevented by pipe_config_set_bpp. */ | |
8879 | BUG(); | |
8880 | } | |
8881 | ||
8882 | if (intel_crtc->config->dither) | |
8883 | val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP; | |
8884 | ||
8885 | I915_WRITE(PIPEMISC(intel_crtc->pipe), val); | |
8886 | } | |
8887 | } | |
8888 | ||
8889 | int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp) | |
8890 | { | |
8891 | /* | |
8892 | * Account for spread spectrum to avoid | |
8893 | * oversubscribing the link. Max center spread | |
8894 | * is 2.5%; use 5% for safety's sake. | |
8895 | */ | |
8896 | u32 bps = target_clock * bpp * 21 / 20; | |
8897 | return DIV_ROUND_UP(bps, link_bw * 8); | |
8898 | } | |
8899 | ||
8900 | static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor) | |
8901 | { | |
8902 | return i9xx_dpll_compute_m(dpll) < factor * dpll->n; | |
8903 | } | |
8904 | ||
8905 | static void ironlake_compute_dpll(struct intel_crtc *intel_crtc, | |
8906 | struct intel_crtc_state *crtc_state, | |
8907 | struct dpll *reduced_clock) | |
8908 | { | |
8909 | struct drm_crtc *crtc = &intel_crtc->base; | |
8910 | struct drm_device *dev = crtc->dev; | |
8911 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8912 | struct drm_atomic_state *state = crtc_state->base.state; | |
8913 | struct drm_connector *connector; | |
8914 | struct drm_connector_state *connector_state; | |
8915 | struct intel_encoder *encoder; | |
8916 | u32 dpll, fp, fp2; | |
8917 | int factor, i; | |
8918 | bool is_lvds = false, is_sdvo = false; | |
8919 | ||
8920 | for_each_connector_in_state(state, connector, connector_state, i) { | |
8921 | if (connector_state->crtc != crtc_state->base.crtc) | |
8922 | continue; | |
8923 | ||
8924 | encoder = to_intel_encoder(connector_state->best_encoder); | |
8925 | ||
8926 | switch (encoder->type) { | |
8927 | case INTEL_OUTPUT_LVDS: | |
8928 | is_lvds = true; | |
8929 | break; | |
8930 | case INTEL_OUTPUT_SDVO: | |
8931 | case INTEL_OUTPUT_HDMI: | |
8932 | is_sdvo = true; | |
8933 | break; | |
8934 | default: | |
8935 | break; | |
8936 | } | |
8937 | } | |
8938 | ||
8939 | /* Enable autotuning of the PLL clock (if permissible) */ | |
8940 | factor = 21; | |
8941 | if (is_lvds) { | |
8942 | if ((intel_panel_use_ssc(dev_priv) && | |
8943 | dev_priv->vbt.lvds_ssc_freq == 100000) || | |
8944 | (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev))) | |
8945 | factor = 25; | |
8946 | } else if (crtc_state->sdvo_tv_clock) | |
8947 | factor = 20; | |
8948 | ||
8949 | fp = i9xx_dpll_compute_fp(&crtc_state->dpll); | |
8950 | ||
8951 | if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor)) | |
8952 | fp |= FP_CB_TUNE; | |
8953 | ||
8954 | if (reduced_clock) { | |
8955 | fp2 = i9xx_dpll_compute_fp(reduced_clock); | |
8956 | ||
8957 | if (reduced_clock->m < factor * reduced_clock->n) | |
8958 | fp2 |= FP_CB_TUNE; | |
8959 | } else { | |
8960 | fp2 = fp; | |
8961 | } | |
8962 | ||
8963 | dpll = 0; | |
8964 | ||
8965 | if (is_lvds) | |
8966 | dpll |= DPLLB_MODE_LVDS; | |
8967 | else | |
8968 | dpll |= DPLLB_MODE_DAC_SERIAL; | |
8969 | ||
8970 | dpll |= (crtc_state->pixel_multiplier - 1) | |
8971 | << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT; | |
8972 | ||
8973 | if (is_sdvo) | |
8974 | dpll |= DPLL_SDVO_HIGH_SPEED; | |
8975 | if (crtc_state->has_dp_encoder) | |
8976 | dpll |= DPLL_SDVO_HIGH_SPEED; | |
8977 | ||
8978 | /* compute bitmask from p1 value */ | |
8979 | dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT; | |
8980 | /* also FPA1 */ | |
8981 | dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT; | |
8982 | ||
8983 | switch (crtc_state->dpll.p2) { | |
8984 | case 5: | |
8985 | dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5; | |
8986 | break; | |
8987 | case 7: | |
8988 | dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7; | |
8989 | break; | |
8990 | case 10: | |
8991 | dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10; | |
8992 | break; | |
8993 | case 14: | |
8994 | dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14; | |
8995 | break; | |
8996 | } | |
8997 | ||
8998 | if (is_lvds && intel_panel_use_ssc(dev_priv)) | |
8999 | dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN; | |
9000 | else | |
9001 | dpll |= PLL_REF_INPUT_DREFCLK; | |
9002 | ||
9003 | dpll |= DPLL_VCO_ENABLE; | |
9004 | ||
9005 | crtc_state->dpll_hw_state.dpll = dpll; | |
9006 | crtc_state->dpll_hw_state.fp0 = fp; | |
9007 | crtc_state->dpll_hw_state.fp1 = fp2; | |
9008 | } | |
9009 | ||
9010 | static int ironlake_crtc_compute_clock(struct intel_crtc *crtc, | |
9011 | struct intel_crtc_state *crtc_state) | |
9012 | { | |
9013 | struct drm_device *dev = crtc->base.dev; | |
9014 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9015 | struct dpll reduced_clock; | |
9016 | bool has_reduced_clock = false; | |
9017 | struct intel_shared_dpll *pll; | |
9018 | const struct intel_limit *limit; | |
9019 | int refclk = 120000; | |
9020 | ||
9021 | memset(&crtc_state->dpll_hw_state, 0, | |
9022 | sizeof(crtc_state->dpll_hw_state)); | |
9023 | ||
9024 | crtc->lowfreq_avail = false; | |
9025 | ||
9026 | /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */ | |
9027 | if (!crtc_state->has_pch_encoder) | |
9028 | return 0; | |
9029 | ||
9030 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) { | |
9031 | if (intel_panel_use_ssc(dev_priv)) { | |
9032 | DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", | |
9033 | dev_priv->vbt.lvds_ssc_freq); | |
9034 | refclk = dev_priv->vbt.lvds_ssc_freq; | |
9035 | } | |
9036 | ||
9037 | if (intel_is_dual_link_lvds(dev)) { | |
9038 | if (refclk == 100000) | |
9039 | limit = &intel_limits_ironlake_dual_lvds_100m; | |
9040 | else | |
9041 | limit = &intel_limits_ironlake_dual_lvds; | |
9042 | } else { | |
9043 | if (refclk == 100000) | |
9044 | limit = &intel_limits_ironlake_single_lvds_100m; | |
9045 | else | |
9046 | limit = &intel_limits_ironlake_single_lvds; | |
9047 | } | |
9048 | } else { | |
9049 | limit = &intel_limits_ironlake_dac; | |
9050 | } | |
9051 | ||
9052 | if (!crtc_state->clock_set && | |
9053 | !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock, | |
9054 | refclk, NULL, &crtc_state->dpll)) { | |
9055 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
9056 | return -EINVAL; | |
9057 | } | |
9058 | ||
9059 | ironlake_compute_dpll(crtc, crtc_state, | |
9060 | has_reduced_clock ? &reduced_clock : NULL); | |
9061 | ||
9062 | pll = intel_get_shared_dpll(crtc, crtc_state, NULL); | |
9063 | if (pll == NULL) { | |
9064 | DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n", | |
9065 | pipe_name(crtc->pipe)); | |
9066 | return -EINVAL; | |
9067 | } | |
9068 | ||
9069 | if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) && | |
9070 | has_reduced_clock) | |
9071 | crtc->lowfreq_avail = true; | |
9072 | ||
9073 | return 0; | |
9074 | } | |
9075 | ||
9076 | static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc, | |
9077 | struct intel_link_m_n *m_n) | |
9078 | { | |
9079 | struct drm_device *dev = crtc->base.dev; | |
9080 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9081 | enum pipe pipe = crtc->pipe; | |
9082 | ||
9083 | m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe)); | |
9084 | m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe)); | |
9085 | m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe)) | |
9086 | & ~TU_SIZE_MASK; | |
9087 | m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe)); | |
9088 | m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe)) | |
9089 | & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1; | |
9090 | } | |
9091 | ||
9092 | static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc, | |
9093 | enum transcoder transcoder, | |
9094 | struct intel_link_m_n *m_n, | |
9095 | struct intel_link_m_n *m2_n2) | |
9096 | { | |
9097 | struct drm_device *dev = crtc->base.dev; | |
9098 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9099 | enum pipe pipe = crtc->pipe; | |
9100 | ||
9101 | if (INTEL_INFO(dev)->gen >= 5) { | |
9102 | m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder)); | |
9103 | m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder)); | |
9104 | m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder)) | |
9105 | & ~TU_SIZE_MASK; | |
9106 | m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder)); | |
9107 | m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder)) | |
9108 | & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1; | |
9109 | /* Read M2_N2 registers only for gen < 8 (M2_N2 available for | |
9110 | * gen < 8) and if DRRS is supported (to make sure the | |
9111 | * registers are not unnecessarily read). | |
9112 | */ | |
9113 | if (m2_n2 && INTEL_INFO(dev)->gen < 8 && | |
9114 | crtc->config->has_drrs) { | |
9115 | m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder)); | |
9116 | m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder)); | |
9117 | m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder)) | |
9118 | & ~TU_SIZE_MASK; | |
9119 | m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder)); | |
9120 | m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder)) | |
9121 | & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1; | |
9122 | } | |
9123 | } else { | |
9124 | m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe)); | |
9125 | m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe)); | |
9126 | m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe)) | |
9127 | & ~TU_SIZE_MASK; | |
9128 | m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe)); | |
9129 | m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe)) | |
9130 | & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1; | |
9131 | } | |
9132 | } | |
9133 | ||
9134 | void intel_dp_get_m_n(struct intel_crtc *crtc, | |
9135 | struct intel_crtc_state *pipe_config) | |
9136 | { | |
9137 | if (pipe_config->has_pch_encoder) | |
9138 | intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n); | |
9139 | else | |
9140 | intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder, | |
9141 | &pipe_config->dp_m_n, | |
9142 | &pipe_config->dp_m2_n2); | |
9143 | } | |
9144 | ||
9145 | static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc, | |
9146 | struct intel_crtc_state *pipe_config) | |
9147 | { | |
9148 | intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder, | |
9149 | &pipe_config->fdi_m_n, NULL); | |
9150 | } | |
9151 | ||
9152 | static void skylake_get_pfit_config(struct intel_crtc *crtc, | |
9153 | struct intel_crtc_state *pipe_config) | |
9154 | { | |
9155 | struct drm_device *dev = crtc->base.dev; | |
9156 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9157 | struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state; | |
9158 | uint32_t ps_ctrl = 0; | |
9159 | int id = -1; | |
9160 | int i; | |
9161 | ||
9162 | /* find scaler attached to this pipe */ | |
9163 | for (i = 0; i < crtc->num_scalers; i++) { | |
9164 | ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i)); | |
9165 | if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) { | |
9166 | id = i; | |
9167 | pipe_config->pch_pfit.enabled = true; | |
9168 | pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i)); | |
9169 | pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i)); | |
9170 | break; | |
9171 | } | |
9172 | } | |
9173 | ||
9174 | scaler_state->scaler_id = id; | |
9175 | if (id >= 0) { | |
9176 | scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX); | |
9177 | } else { | |
9178 | scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX); | |
9179 | } | |
9180 | } | |
9181 | ||
9182 | static void | |
9183 | skylake_get_initial_plane_config(struct intel_crtc *crtc, | |
9184 | struct intel_initial_plane_config *plane_config) | |
9185 | { | |
9186 | struct drm_device *dev = crtc->base.dev; | |
9187 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9188 | u32 val, base, offset, stride_mult, tiling; | |
9189 | int pipe = crtc->pipe; | |
9190 | int fourcc, pixel_format; | |
9191 | unsigned int aligned_height; | |
9192 | struct drm_framebuffer *fb; | |
9193 | struct intel_framebuffer *intel_fb; | |
9194 | ||
9195 | intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL); | |
9196 | if (!intel_fb) { | |
9197 | DRM_DEBUG_KMS("failed to alloc fb\n"); | |
9198 | return; | |
9199 | } | |
9200 | ||
9201 | fb = &intel_fb->base; | |
9202 | ||
9203 | val = I915_READ(PLANE_CTL(pipe, 0)); | |
9204 | if (!(val & PLANE_CTL_ENABLE)) | |
9205 | goto error; | |
9206 | ||
9207 | pixel_format = val & PLANE_CTL_FORMAT_MASK; | |
9208 | fourcc = skl_format_to_fourcc(pixel_format, | |
9209 | val & PLANE_CTL_ORDER_RGBX, | |
9210 | val & PLANE_CTL_ALPHA_MASK); | |
9211 | fb->pixel_format = fourcc; | |
9212 | fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8; | |
9213 | ||
9214 | tiling = val & PLANE_CTL_TILED_MASK; | |
9215 | switch (tiling) { | |
9216 | case PLANE_CTL_TILED_LINEAR: | |
9217 | fb->modifier[0] = DRM_FORMAT_MOD_NONE; | |
9218 | break; | |
9219 | case PLANE_CTL_TILED_X: | |
9220 | plane_config->tiling = I915_TILING_X; | |
9221 | fb->modifier[0] = I915_FORMAT_MOD_X_TILED; | |
9222 | break; | |
9223 | case PLANE_CTL_TILED_Y: | |
9224 | fb->modifier[0] = I915_FORMAT_MOD_Y_TILED; | |
9225 | break; | |
9226 | case PLANE_CTL_TILED_YF: | |
9227 | fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED; | |
9228 | break; | |
9229 | default: | |
9230 | MISSING_CASE(tiling); | |
9231 | goto error; | |
9232 | } | |
9233 | ||
9234 | base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000; | |
9235 | plane_config->base = base; | |
9236 | ||
9237 | offset = I915_READ(PLANE_OFFSET(pipe, 0)); | |
9238 | ||
9239 | val = I915_READ(PLANE_SIZE(pipe, 0)); | |
9240 | fb->height = ((val >> 16) & 0xfff) + 1; | |
9241 | fb->width = ((val >> 0) & 0x1fff) + 1; | |
9242 | ||
9243 | val = I915_READ(PLANE_STRIDE(pipe, 0)); | |
9244 | stride_mult = intel_fb_stride_alignment(dev_priv, fb->modifier[0], | |
9245 | fb->pixel_format); | |
9246 | fb->pitches[0] = (val & 0x3ff) * stride_mult; | |
9247 | ||
9248 | aligned_height = intel_fb_align_height(dev, fb->height, | |
9249 | fb->pixel_format, | |
9250 | fb->modifier[0]); | |
9251 | ||
9252 | plane_config->size = fb->pitches[0] * aligned_height; | |
9253 | ||
9254 | DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n", | |
9255 | pipe_name(pipe), fb->width, fb->height, | |
9256 | fb->bits_per_pixel, base, fb->pitches[0], | |
9257 | plane_config->size); | |
9258 | ||
9259 | plane_config->fb = intel_fb; | |
9260 | return; | |
9261 | ||
9262 | error: | |
9263 | kfree(fb); | |
9264 | } | |
9265 | ||
9266 | static void ironlake_get_pfit_config(struct intel_crtc *crtc, | |
9267 | struct intel_crtc_state *pipe_config) | |
9268 | { | |
9269 | struct drm_device *dev = crtc->base.dev; | |
9270 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9271 | uint32_t tmp; | |
9272 | ||
9273 | tmp = I915_READ(PF_CTL(crtc->pipe)); | |
9274 | ||
9275 | if (tmp & PF_ENABLE) { | |
9276 | pipe_config->pch_pfit.enabled = true; | |
9277 | pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe)); | |
9278 | pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe)); | |
9279 | ||
9280 | /* We currently do not free assignements of panel fitters on | |
9281 | * ivb/hsw (since we don't use the higher upscaling modes which | |
9282 | * differentiates them) so just WARN about this case for now. */ | |
9283 | if (IS_GEN7(dev)) { | |
9284 | WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) != | |
9285 | PF_PIPE_SEL_IVB(crtc->pipe)); | |
9286 | } | |
9287 | } | |
9288 | } | |
9289 | ||
9290 | static void | |
9291 | ironlake_get_initial_plane_config(struct intel_crtc *crtc, | |
9292 | struct intel_initial_plane_config *plane_config) | |
9293 | { | |
9294 | struct drm_device *dev = crtc->base.dev; | |
9295 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9296 | u32 val, base, offset; | |
9297 | int pipe = crtc->pipe; | |
9298 | int fourcc, pixel_format; | |
9299 | unsigned int aligned_height; | |
9300 | struct drm_framebuffer *fb; | |
9301 | struct intel_framebuffer *intel_fb; | |
9302 | ||
9303 | val = I915_READ(DSPCNTR(pipe)); | |
9304 | if (!(val & DISPLAY_PLANE_ENABLE)) | |
9305 | return; | |
9306 | ||
9307 | intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL); | |
9308 | if (!intel_fb) { | |
9309 | DRM_DEBUG_KMS("failed to alloc fb\n"); | |
9310 | return; | |
9311 | } | |
9312 | ||
9313 | fb = &intel_fb->base; | |
9314 | ||
9315 | if (INTEL_INFO(dev)->gen >= 4) { | |
9316 | if (val & DISPPLANE_TILED) { | |
9317 | plane_config->tiling = I915_TILING_X; | |
9318 | fb->modifier[0] = I915_FORMAT_MOD_X_TILED; | |
9319 | } | |
9320 | } | |
9321 | ||
9322 | pixel_format = val & DISPPLANE_PIXFORMAT_MASK; | |
9323 | fourcc = i9xx_format_to_fourcc(pixel_format); | |
9324 | fb->pixel_format = fourcc; | |
9325 | fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8; | |
9326 | ||
9327 | base = I915_READ(DSPSURF(pipe)) & 0xfffff000; | |
9328 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
9329 | offset = I915_READ(DSPOFFSET(pipe)); | |
9330 | } else { | |
9331 | if (plane_config->tiling) | |
9332 | offset = I915_READ(DSPTILEOFF(pipe)); | |
9333 | else | |
9334 | offset = I915_READ(DSPLINOFF(pipe)); | |
9335 | } | |
9336 | plane_config->base = base; | |
9337 | ||
9338 | val = I915_READ(PIPESRC(pipe)); | |
9339 | fb->width = ((val >> 16) & 0xfff) + 1; | |
9340 | fb->height = ((val >> 0) & 0xfff) + 1; | |
9341 | ||
9342 | val = I915_READ(DSPSTRIDE(pipe)); | |
9343 | fb->pitches[0] = val & 0xffffffc0; | |
9344 | ||
9345 | aligned_height = intel_fb_align_height(dev, fb->height, | |
9346 | fb->pixel_format, | |
9347 | fb->modifier[0]); | |
9348 | ||
9349 | plane_config->size = fb->pitches[0] * aligned_height; | |
9350 | ||
9351 | DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n", | |
9352 | pipe_name(pipe), fb->width, fb->height, | |
9353 | fb->bits_per_pixel, base, fb->pitches[0], | |
9354 | plane_config->size); | |
9355 | ||
9356 | plane_config->fb = intel_fb; | |
9357 | } | |
9358 | ||
9359 | static bool ironlake_get_pipe_config(struct intel_crtc *crtc, | |
9360 | struct intel_crtc_state *pipe_config) | |
9361 | { | |
9362 | struct drm_device *dev = crtc->base.dev; | |
9363 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9364 | enum intel_display_power_domain power_domain; | |
9365 | uint32_t tmp; | |
9366 | bool ret; | |
9367 | ||
9368 | power_domain = POWER_DOMAIN_PIPE(crtc->pipe); | |
9369 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
9370 | return false; | |
9371 | ||
9372 | pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe; | |
9373 | pipe_config->shared_dpll = NULL; | |
9374 | ||
9375 | ret = false; | |
9376 | tmp = I915_READ(PIPECONF(crtc->pipe)); | |
9377 | if (!(tmp & PIPECONF_ENABLE)) | |
9378 | goto out; | |
9379 | ||
9380 | switch (tmp & PIPECONF_BPC_MASK) { | |
9381 | case PIPECONF_6BPC: | |
9382 | pipe_config->pipe_bpp = 18; | |
9383 | break; | |
9384 | case PIPECONF_8BPC: | |
9385 | pipe_config->pipe_bpp = 24; | |
9386 | break; | |
9387 | case PIPECONF_10BPC: | |
9388 | pipe_config->pipe_bpp = 30; | |
9389 | break; | |
9390 | case PIPECONF_12BPC: | |
9391 | pipe_config->pipe_bpp = 36; | |
9392 | break; | |
9393 | default: | |
9394 | break; | |
9395 | } | |
9396 | ||
9397 | if (tmp & PIPECONF_COLOR_RANGE_SELECT) | |
9398 | pipe_config->limited_color_range = true; | |
9399 | ||
9400 | if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) { | |
9401 | struct intel_shared_dpll *pll; | |
9402 | enum intel_dpll_id pll_id; | |
9403 | ||
9404 | pipe_config->has_pch_encoder = true; | |
9405 | ||
9406 | tmp = I915_READ(FDI_RX_CTL(crtc->pipe)); | |
9407 | pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >> | |
9408 | FDI_DP_PORT_WIDTH_SHIFT) + 1; | |
9409 | ||
9410 | ironlake_get_fdi_m_n_config(crtc, pipe_config); | |
9411 | ||
9412 | if (HAS_PCH_IBX(dev_priv)) { | |
9413 | /* | |
9414 | * The pipe->pch transcoder and pch transcoder->pll | |
9415 | * mapping is fixed. | |
9416 | */ | |
9417 | pll_id = (enum intel_dpll_id) crtc->pipe; | |
9418 | } else { | |
9419 | tmp = I915_READ(PCH_DPLL_SEL); | |
9420 | if (tmp & TRANS_DPLLB_SEL(crtc->pipe)) | |
9421 | pll_id = DPLL_ID_PCH_PLL_B; | |
9422 | else | |
9423 | pll_id= DPLL_ID_PCH_PLL_A; | |
9424 | } | |
9425 | ||
9426 | pipe_config->shared_dpll = | |
9427 | intel_get_shared_dpll_by_id(dev_priv, pll_id); | |
9428 | pll = pipe_config->shared_dpll; | |
9429 | ||
9430 | WARN_ON(!pll->funcs.get_hw_state(dev_priv, pll, | |
9431 | &pipe_config->dpll_hw_state)); | |
9432 | ||
9433 | tmp = pipe_config->dpll_hw_state.dpll; | |
9434 | pipe_config->pixel_multiplier = | |
9435 | ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK) | |
9436 | >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1; | |
9437 | ||
9438 | ironlake_pch_clock_get(crtc, pipe_config); | |
9439 | } else { | |
9440 | pipe_config->pixel_multiplier = 1; | |
9441 | } | |
9442 | ||
9443 | intel_get_pipe_timings(crtc, pipe_config); | |
9444 | intel_get_pipe_src_size(crtc, pipe_config); | |
9445 | ||
9446 | ironlake_get_pfit_config(crtc, pipe_config); | |
9447 | ||
9448 | ret = true; | |
9449 | ||
9450 | out: | |
9451 | intel_display_power_put(dev_priv, power_domain); | |
9452 | ||
9453 | return ret; | |
9454 | } | |
9455 | ||
9456 | static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv) | |
9457 | { | |
9458 | struct drm_device *dev = dev_priv->dev; | |
9459 | struct intel_crtc *crtc; | |
9460 | ||
9461 | for_each_intel_crtc(dev, crtc) | |
9462 | I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n", | |
9463 | pipe_name(crtc->pipe)); | |
9464 | ||
9465 | I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n"); | |
9466 | I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n"); | |
9467 | I915_STATE_WARN(I915_READ(WRPLL_CTL(0)) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n"); | |
9468 | I915_STATE_WARN(I915_READ(WRPLL_CTL(1)) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n"); | |
9469 | I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n"); | |
9470 | I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE, | |
9471 | "CPU PWM1 enabled\n"); | |
9472 | if (IS_HASWELL(dev)) | |
9473 | I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE, | |
9474 | "CPU PWM2 enabled\n"); | |
9475 | I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE, | |
9476 | "PCH PWM1 enabled\n"); | |
9477 | I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE, | |
9478 | "Utility pin enabled\n"); | |
9479 | I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n"); | |
9480 | ||
9481 | /* | |
9482 | * In theory we can still leave IRQs enabled, as long as only the HPD | |
9483 | * interrupts remain enabled. We used to check for that, but since it's | |
9484 | * gen-specific and since we only disable LCPLL after we fully disable | |
9485 | * the interrupts, the check below should be enough. | |
9486 | */ | |
9487 | I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n"); | |
9488 | } | |
9489 | ||
9490 | static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv) | |
9491 | { | |
9492 | struct drm_device *dev = dev_priv->dev; | |
9493 | ||
9494 | if (IS_HASWELL(dev)) | |
9495 | return I915_READ(D_COMP_HSW); | |
9496 | else | |
9497 | return I915_READ(D_COMP_BDW); | |
9498 | } | |
9499 | ||
9500 | static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val) | |
9501 | { | |
9502 | struct drm_device *dev = dev_priv->dev; | |
9503 | ||
9504 | if (IS_HASWELL(dev)) { | |
9505 | mutex_lock(&dev_priv->rps.hw_lock); | |
9506 | if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP, | |
9507 | val)) | |
9508 | DRM_ERROR("Failed to write to D_COMP\n"); | |
9509 | mutex_unlock(&dev_priv->rps.hw_lock); | |
9510 | } else { | |
9511 | I915_WRITE(D_COMP_BDW, val); | |
9512 | POSTING_READ(D_COMP_BDW); | |
9513 | } | |
9514 | } | |
9515 | ||
9516 | /* | |
9517 | * This function implements pieces of two sequences from BSpec: | |
9518 | * - Sequence for display software to disable LCPLL | |
9519 | * - Sequence for display software to allow package C8+ | |
9520 | * The steps implemented here are just the steps that actually touch the LCPLL | |
9521 | * register. Callers should take care of disabling all the display engine | |
9522 | * functions, doing the mode unset, fixing interrupts, etc. | |
9523 | */ | |
9524 | static void hsw_disable_lcpll(struct drm_i915_private *dev_priv, | |
9525 | bool switch_to_fclk, bool allow_power_down) | |
9526 | { | |
9527 | uint32_t val; | |
9528 | ||
9529 | assert_can_disable_lcpll(dev_priv); | |
9530 | ||
9531 | val = I915_READ(LCPLL_CTL); | |
9532 | ||
9533 | if (switch_to_fclk) { | |
9534 | val |= LCPLL_CD_SOURCE_FCLK; | |
9535 | I915_WRITE(LCPLL_CTL, val); | |
9536 | ||
9537 | if (wait_for_atomic_us(I915_READ(LCPLL_CTL) & | |
9538 | LCPLL_CD_SOURCE_FCLK_DONE, 1)) | |
9539 | DRM_ERROR("Switching to FCLK failed\n"); | |
9540 | ||
9541 | val = I915_READ(LCPLL_CTL); | |
9542 | } | |
9543 | ||
9544 | val |= LCPLL_PLL_DISABLE; | |
9545 | I915_WRITE(LCPLL_CTL, val); | |
9546 | POSTING_READ(LCPLL_CTL); | |
9547 | ||
9548 | if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1)) | |
9549 | DRM_ERROR("LCPLL still locked\n"); | |
9550 | ||
9551 | val = hsw_read_dcomp(dev_priv); | |
9552 | val |= D_COMP_COMP_DISABLE; | |
9553 | hsw_write_dcomp(dev_priv, val); | |
9554 | ndelay(100); | |
9555 | ||
9556 | if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0, | |
9557 | 1)) | |
9558 | DRM_ERROR("D_COMP RCOMP still in progress\n"); | |
9559 | ||
9560 | if (allow_power_down) { | |
9561 | val = I915_READ(LCPLL_CTL); | |
9562 | val |= LCPLL_POWER_DOWN_ALLOW; | |
9563 | I915_WRITE(LCPLL_CTL, val); | |
9564 | POSTING_READ(LCPLL_CTL); | |
9565 | } | |
9566 | } | |
9567 | ||
9568 | /* | |
9569 | * Fully restores LCPLL, disallowing power down and switching back to LCPLL | |
9570 | * source. | |
9571 | */ | |
9572 | static void hsw_restore_lcpll(struct drm_i915_private *dev_priv) | |
9573 | { | |
9574 | uint32_t val; | |
9575 | ||
9576 | val = I915_READ(LCPLL_CTL); | |
9577 | ||
9578 | if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK | | |
9579 | LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK) | |
9580 | return; | |
9581 | ||
9582 | /* | |
9583 | * Make sure we're not on PC8 state before disabling PC8, otherwise | |
9584 | * we'll hang the machine. To prevent PC8 state, just enable force_wake. | |
9585 | */ | |
9586 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); | |
9587 | ||
9588 | if (val & LCPLL_POWER_DOWN_ALLOW) { | |
9589 | val &= ~LCPLL_POWER_DOWN_ALLOW; | |
9590 | I915_WRITE(LCPLL_CTL, val); | |
9591 | POSTING_READ(LCPLL_CTL); | |
9592 | } | |
9593 | ||
9594 | val = hsw_read_dcomp(dev_priv); | |
9595 | val |= D_COMP_COMP_FORCE; | |
9596 | val &= ~D_COMP_COMP_DISABLE; | |
9597 | hsw_write_dcomp(dev_priv, val); | |
9598 | ||
9599 | val = I915_READ(LCPLL_CTL); | |
9600 | val &= ~LCPLL_PLL_DISABLE; | |
9601 | I915_WRITE(LCPLL_CTL, val); | |
9602 | ||
9603 | if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5)) | |
9604 | DRM_ERROR("LCPLL not locked yet\n"); | |
9605 | ||
9606 | if (val & LCPLL_CD_SOURCE_FCLK) { | |
9607 | val = I915_READ(LCPLL_CTL); | |
9608 | val &= ~LCPLL_CD_SOURCE_FCLK; | |
9609 | I915_WRITE(LCPLL_CTL, val); | |
9610 | ||
9611 | if (wait_for_atomic_us((I915_READ(LCPLL_CTL) & | |
9612 | LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1)) | |
9613 | DRM_ERROR("Switching back to LCPLL failed\n"); | |
9614 | } | |
9615 | ||
9616 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
9617 | intel_update_cdclk(dev_priv->dev); | |
9618 | } | |
9619 | ||
9620 | /* | |
9621 | * Package states C8 and deeper are really deep PC states that can only be | |
9622 | * reached when all the devices on the system allow it, so even if the graphics | |
9623 | * device allows PC8+, it doesn't mean the system will actually get to these | |
9624 | * states. Our driver only allows PC8+ when going into runtime PM. | |
9625 | * | |
9626 | * The requirements for PC8+ are that all the outputs are disabled, the power | |
9627 | * well is disabled and most interrupts are disabled, and these are also | |
9628 | * requirements for runtime PM. When these conditions are met, we manually do | |
9629 | * the other conditions: disable the interrupts, clocks and switch LCPLL refclk | |
9630 | * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard | |
9631 | * hang the machine. | |
9632 | * | |
9633 | * When we really reach PC8 or deeper states (not just when we allow it) we lose | |
9634 | * the state of some registers, so when we come back from PC8+ we need to | |
9635 | * restore this state. We don't get into PC8+ if we're not in RC6, so we don't | |
9636 | * need to take care of the registers kept by RC6. Notice that this happens even | |
9637 | * if we don't put the device in PCI D3 state (which is what currently happens | |
9638 | * because of the runtime PM support). | |
9639 | * | |
9640 | * For more, read "Display Sequences for Package C8" on the hardware | |
9641 | * documentation. | |
9642 | */ | |
9643 | void hsw_enable_pc8(struct drm_i915_private *dev_priv) | |
9644 | { | |
9645 | struct drm_device *dev = dev_priv->dev; | |
9646 | uint32_t val; | |
9647 | ||
9648 | DRM_DEBUG_KMS("Enabling package C8+\n"); | |
9649 | ||
9650 | if (HAS_PCH_LPT_LP(dev)) { | |
9651 | val = I915_READ(SOUTH_DSPCLK_GATE_D); | |
9652 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
9653 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
9654 | } | |
9655 | ||
9656 | lpt_disable_clkout_dp(dev); | |
9657 | hsw_disable_lcpll(dev_priv, true, true); | |
9658 | } | |
9659 | ||
9660 | void hsw_disable_pc8(struct drm_i915_private *dev_priv) | |
9661 | { | |
9662 | struct drm_device *dev = dev_priv->dev; | |
9663 | uint32_t val; | |
9664 | ||
9665 | DRM_DEBUG_KMS("Disabling package C8+\n"); | |
9666 | ||
9667 | hsw_restore_lcpll(dev_priv); | |
9668 | lpt_init_pch_refclk(dev); | |
9669 | ||
9670 | if (HAS_PCH_LPT_LP(dev)) { | |
9671 | val = I915_READ(SOUTH_DSPCLK_GATE_D); | |
9672 | val |= PCH_LP_PARTITION_LEVEL_DISABLE; | |
9673 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
9674 | } | |
9675 | } | |
9676 | ||
9677 | static void bxt_modeset_commit_cdclk(struct drm_atomic_state *old_state) | |
9678 | { | |
9679 | struct drm_device *dev = old_state->dev; | |
9680 | struct intel_atomic_state *old_intel_state = | |
9681 | to_intel_atomic_state(old_state); | |
9682 | unsigned int req_cdclk = old_intel_state->dev_cdclk; | |
9683 | ||
9684 | bxt_set_cdclk(to_i915(dev), req_cdclk); | |
9685 | } | |
9686 | ||
9687 | /* compute the max rate for new configuration */ | |
9688 | static int ilk_max_pixel_rate(struct drm_atomic_state *state) | |
9689 | { | |
9690 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
9691 | struct drm_i915_private *dev_priv = state->dev->dev_private; | |
9692 | struct drm_crtc *crtc; | |
9693 | struct drm_crtc_state *cstate; | |
9694 | struct intel_crtc_state *crtc_state; | |
9695 | unsigned max_pixel_rate = 0, i; | |
9696 | enum pipe pipe; | |
9697 | ||
9698 | memcpy(intel_state->min_pixclk, dev_priv->min_pixclk, | |
9699 | sizeof(intel_state->min_pixclk)); | |
9700 | ||
9701 | for_each_crtc_in_state(state, crtc, cstate, i) { | |
9702 | int pixel_rate; | |
9703 | ||
9704 | crtc_state = to_intel_crtc_state(cstate); | |
9705 | if (!crtc_state->base.enable) { | |
9706 | intel_state->min_pixclk[i] = 0; | |
9707 | continue; | |
9708 | } | |
9709 | ||
9710 | pixel_rate = ilk_pipe_pixel_rate(crtc_state); | |
9711 | ||
9712 | /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */ | |
9713 | if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled) | |
9714 | pixel_rate = DIV_ROUND_UP(pixel_rate * 100, 95); | |
9715 | ||
9716 | intel_state->min_pixclk[i] = pixel_rate; | |
9717 | } | |
9718 | ||
9719 | for_each_pipe(dev_priv, pipe) | |
9720 | max_pixel_rate = max(intel_state->min_pixclk[pipe], max_pixel_rate); | |
9721 | ||
9722 | return max_pixel_rate; | |
9723 | } | |
9724 | ||
9725 | static void broadwell_set_cdclk(struct drm_device *dev, int cdclk) | |
9726 | { | |
9727 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9728 | uint32_t val, data; | |
9729 | int ret; | |
9730 | ||
9731 | if (WARN((I915_READ(LCPLL_CTL) & | |
9732 | (LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK | | |
9733 | LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE | | |
9734 | LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW | | |
9735 | LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK, | |
9736 | "trying to change cdclk frequency with cdclk not enabled\n")) | |
9737 | return; | |
9738 | ||
9739 | mutex_lock(&dev_priv->rps.hw_lock); | |
9740 | ret = sandybridge_pcode_write(dev_priv, | |
9741 | BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0); | |
9742 | mutex_unlock(&dev_priv->rps.hw_lock); | |
9743 | if (ret) { | |
9744 | DRM_ERROR("failed to inform pcode about cdclk change\n"); | |
9745 | return; | |
9746 | } | |
9747 | ||
9748 | val = I915_READ(LCPLL_CTL); | |
9749 | val |= LCPLL_CD_SOURCE_FCLK; | |
9750 | I915_WRITE(LCPLL_CTL, val); | |
9751 | ||
9752 | if (wait_for_us(I915_READ(LCPLL_CTL) & | |
9753 | LCPLL_CD_SOURCE_FCLK_DONE, 1)) | |
9754 | DRM_ERROR("Switching to FCLK failed\n"); | |
9755 | ||
9756 | val = I915_READ(LCPLL_CTL); | |
9757 | val &= ~LCPLL_CLK_FREQ_MASK; | |
9758 | ||
9759 | switch (cdclk) { | |
9760 | case 450000: | |
9761 | val |= LCPLL_CLK_FREQ_450; | |
9762 | data = 0; | |
9763 | break; | |
9764 | case 540000: | |
9765 | val |= LCPLL_CLK_FREQ_54O_BDW; | |
9766 | data = 1; | |
9767 | break; | |
9768 | case 337500: | |
9769 | val |= LCPLL_CLK_FREQ_337_5_BDW; | |
9770 | data = 2; | |
9771 | break; | |
9772 | case 675000: | |
9773 | val |= LCPLL_CLK_FREQ_675_BDW; | |
9774 | data = 3; | |
9775 | break; | |
9776 | default: | |
9777 | WARN(1, "invalid cdclk frequency\n"); | |
9778 | return; | |
9779 | } | |
9780 | ||
9781 | I915_WRITE(LCPLL_CTL, val); | |
9782 | ||
9783 | val = I915_READ(LCPLL_CTL); | |
9784 | val &= ~LCPLL_CD_SOURCE_FCLK; | |
9785 | I915_WRITE(LCPLL_CTL, val); | |
9786 | ||
9787 | if (wait_for_us((I915_READ(LCPLL_CTL) & | |
9788 | LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1)) | |
9789 | DRM_ERROR("Switching back to LCPLL failed\n"); | |
9790 | ||
9791 | mutex_lock(&dev_priv->rps.hw_lock); | |
9792 | sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data); | |
9793 | mutex_unlock(&dev_priv->rps.hw_lock); | |
9794 | ||
9795 | I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1); | |
9796 | ||
9797 | intel_update_cdclk(dev); | |
9798 | ||
9799 | WARN(cdclk != dev_priv->cdclk_freq, | |
9800 | "cdclk requested %d kHz but got %d kHz\n", | |
9801 | cdclk, dev_priv->cdclk_freq); | |
9802 | } | |
9803 | ||
9804 | static int broadwell_calc_cdclk(int max_pixclk) | |
9805 | { | |
9806 | if (max_pixclk > 540000) | |
9807 | return 675000; | |
9808 | else if (max_pixclk > 450000) | |
9809 | return 540000; | |
9810 | else if (max_pixclk > 337500) | |
9811 | return 450000; | |
9812 | else | |
9813 | return 337500; | |
9814 | } | |
9815 | ||
9816 | static int broadwell_modeset_calc_cdclk(struct drm_atomic_state *state) | |
9817 | { | |
9818 | struct drm_i915_private *dev_priv = to_i915(state->dev); | |
9819 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
9820 | int max_pixclk = ilk_max_pixel_rate(state); | |
9821 | int cdclk; | |
9822 | ||
9823 | /* | |
9824 | * FIXME should also account for plane ratio | |
9825 | * once 64bpp pixel formats are supported. | |
9826 | */ | |
9827 | cdclk = broadwell_calc_cdclk(max_pixclk); | |
9828 | ||
9829 | if (cdclk > dev_priv->max_cdclk_freq) { | |
9830 | DRM_DEBUG_KMS("requested cdclk (%d kHz) exceeds max (%d kHz)\n", | |
9831 | cdclk, dev_priv->max_cdclk_freq); | |
9832 | return -EINVAL; | |
9833 | } | |
9834 | ||
9835 | intel_state->cdclk = intel_state->dev_cdclk = cdclk; | |
9836 | if (!intel_state->active_crtcs) | |
9837 | intel_state->dev_cdclk = broadwell_calc_cdclk(0); | |
9838 | ||
9839 | return 0; | |
9840 | } | |
9841 | ||
9842 | static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state) | |
9843 | { | |
9844 | struct drm_device *dev = old_state->dev; | |
9845 | struct intel_atomic_state *old_intel_state = | |
9846 | to_intel_atomic_state(old_state); | |
9847 | unsigned req_cdclk = old_intel_state->dev_cdclk; | |
9848 | ||
9849 | broadwell_set_cdclk(dev, req_cdclk); | |
9850 | } | |
9851 | ||
9852 | static int skl_modeset_calc_cdclk(struct drm_atomic_state *state) | |
9853 | { | |
9854 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
9855 | struct drm_i915_private *dev_priv = to_i915(state->dev); | |
9856 | const int max_pixclk = ilk_max_pixel_rate(state); | |
9857 | int vco = intel_state->cdclk_pll_vco; | |
9858 | int cdclk; | |
9859 | ||
9860 | /* | |
9861 | * FIXME should also account for plane ratio | |
9862 | * once 64bpp pixel formats are supported. | |
9863 | */ | |
9864 | cdclk = skl_calc_cdclk(max_pixclk, vco); | |
9865 | ||
9866 | /* | |
9867 | * FIXME move the cdclk caclulation to | |
9868 | * compute_config() so we can fail gracegully. | |
9869 | */ | |
9870 | if (cdclk > dev_priv->max_cdclk_freq) { | |
9871 | DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n", | |
9872 | cdclk, dev_priv->max_cdclk_freq); | |
9873 | cdclk = dev_priv->max_cdclk_freq; | |
9874 | } | |
9875 | ||
9876 | intel_state->cdclk = intel_state->dev_cdclk = cdclk; | |
9877 | if (!intel_state->active_crtcs) | |
9878 | intel_state->dev_cdclk = skl_calc_cdclk(0, vco); | |
9879 | ||
9880 | return 0; | |
9881 | } | |
9882 | ||
9883 | static void skl_modeset_commit_cdclk(struct drm_atomic_state *old_state) | |
9884 | { | |
9885 | struct drm_i915_private *dev_priv = to_i915(old_state->dev); | |
9886 | struct intel_atomic_state *intel_state = to_intel_atomic_state(old_state); | |
9887 | unsigned int req_cdclk = intel_state->dev_cdclk; | |
9888 | unsigned int req_vco = intel_state->cdclk_pll_vco; | |
9889 | ||
9890 | skl_set_cdclk(dev_priv, req_cdclk, req_vco); | |
9891 | } | |
9892 | ||
9893 | static int haswell_crtc_compute_clock(struct intel_crtc *crtc, | |
9894 | struct intel_crtc_state *crtc_state) | |
9895 | { | |
9896 | struct intel_encoder *intel_encoder = | |
9897 | intel_ddi_get_crtc_new_encoder(crtc_state); | |
9898 | ||
9899 | if (intel_encoder->type != INTEL_OUTPUT_DSI) { | |
9900 | if (!intel_ddi_pll_select(crtc, crtc_state)) | |
9901 | return -EINVAL; | |
9902 | } | |
9903 | ||
9904 | crtc->lowfreq_avail = false; | |
9905 | ||
9906 | return 0; | |
9907 | } | |
9908 | ||
9909 | static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv, | |
9910 | enum port port, | |
9911 | struct intel_crtc_state *pipe_config) | |
9912 | { | |
9913 | enum intel_dpll_id id; | |
9914 | ||
9915 | switch (port) { | |
9916 | case PORT_A: | |
9917 | pipe_config->ddi_pll_sel = SKL_DPLL0; | |
9918 | id = DPLL_ID_SKL_DPLL0; | |
9919 | break; | |
9920 | case PORT_B: | |
9921 | pipe_config->ddi_pll_sel = SKL_DPLL1; | |
9922 | id = DPLL_ID_SKL_DPLL1; | |
9923 | break; | |
9924 | case PORT_C: | |
9925 | pipe_config->ddi_pll_sel = SKL_DPLL2; | |
9926 | id = DPLL_ID_SKL_DPLL2; | |
9927 | break; | |
9928 | default: | |
9929 | DRM_ERROR("Incorrect port type\n"); | |
9930 | return; | |
9931 | } | |
9932 | ||
9933 | pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id); | |
9934 | } | |
9935 | ||
9936 | static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv, | |
9937 | enum port port, | |
9938 | struct intel_crtc_state *pipe_config) | |
9939 | { | |
9940 | enum intel_dpll_id id; | |
9941 | u32 temp; | |
9942 | ||
9943 | temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port); | |
9944 | pipe_config->ddi_pll_sel = temp >> (port * 3 + 1); | |
9945 | ||
9946 | switch (pipe_config->ddi_pll_sel) { | |
9947 | case SKL_DPLL0: | |
9948 | id = DPLL_ID_SKL_DPLL0; | |
9949 | break; | |
9950 | case SKL_DPLL1: | |
9951 | id = DPLL_ID_SKL_DPLL1; | |
9952 | break; | |
9953 | case SKL_DPLL2: | |
9954 | id = DPLL_ID_SKL_DPLL2; | |
9955 | break; | |
9956 | case SKL_DPLL3: | |
9957 | id = DPLL_ID_SKL_DPLL3; | |
9958 | break; | |
9959 | default: | |
9960 | MISSING_CASE(pipe_config->ddi_pll_sel); | |
9961 | return; | |
9962 | } | |
9963 | ||
9964 | pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id); | |
9965 | } | |
9966 | ||
9967 | static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv, | |
9968 | enum port port, | |
9969 | struct intel_crtc_state *pipe_config) | |
9970 | { | |
9971 | enum intel_dpll_id id; | |
9972 | ||
9973 | pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port)); | |
9974 | ||
9975 | switch (pipe_config->ddi_pll_sel) { | |
9976 | case PORT_CLK_SEL_WRPLL1: | |
9977 | id = DPLL_ID_WRPLL1; | |
9978 | break; | |
9979 | case PORT_CLK_SEL_WRPLL2: | |
9980 | id = DPLL_ID_WRPLL2; | |
9981 | break; | |
9982 | case PORT_CLK_SEL_SPLL: | |
9983 | id = DPLL_ID_SPLL; | |
9984 | break; | |
9985 | case PORT_CLK_SEL_LCPLL_810: | |
9986 | id = DPLL_ID_LCPLL_810; | |
9987 | break; | |
9988 | case PORT_CLK_SEL_LCPLL_1350: | |
9989 | id = DPLL_ID_LCPLL_1350; | |
9990 | break; | |
9991 | case PORT_CLK_SEL_LCPLL_2700: | |
9992 | id = DPLL_ID_LCPLL_2700; | |
9993 | break; | |
9994 | default: | |
9995 | MISSING_CASE(pipe_config->ddi_pll_sel); | |
9996 | /* fall through */ | |
9997 | case PORT_CLK_SEL_NONE: | |
9998 | return; | |
9999 | } | |
10000 | ||
10001 | pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id); | |
10002 | } | |
10003 | ||
10004 | static bool hsw_get_transcoder_state(struct intel_crtc *crtc, | |
10005 | struct intel_crtc_state *pipe_config, | |
10006 | unsigned long *power_domain_mask) | |
10007 | { | |
10008 | struct drm_device *dev = crtc->base.dev; | |
10009 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10010 | enum intel_display_power_domain power_domain; | |
10011 | u32 tmp; | |
10012 | ||
10013 | /* | |
10014 | * The pipe->transcoder mapping is fixed with the exception of the eDP | |
10015 | * transcoder handled below. | |
10016 | */ | |
10017 | pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe; | |
10018 | ||
10019 | /* | |
10020 | * XXX: Do intel_display_power_get_if_enabled before reading this (for | |
10021 | * consistency and less surprising code; it's in always on power). | |
10022 | */ | |
10023 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP)); | |
10024 | if (tmp & TRANS_DDI_FUNC_ENABLE) { | |
10025 | enum pipe trans_edp_pipe; | |
10026 | switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { | |
10027 | default: | |
10028 | WARN(1, "unknown pipe linked to edp transcoder\n"); | |
10029 | case TRANS_DDI_EDP_INPUT_A_ONOFF: | |
10030 | case TRANS_DDI_EDP_INPUT_A_ON: | |
10031 | trans_edp_pipe = PIPE_A; | |
10032 | break; | |
10033 | case TRANS_DDI_EDP_INPUT_B_ONOFF: | |
10034 | trans_edp_pipe = PIPE_B; | |
10035 | break; | |
10036 | case TRANS_DDI_EDP_INPUT_C_ONOFF: | |
10037 | trans_edp_pipe = PIPE_C; | |
10038 | break; | |
10039 | } | |
10040 | ||
10041 | if (trans_edp_pipe == crtc->pipe) | |
10042 | pipe_config->cpu_transcoder = TRANSCODER_EDP; | |
10043 | } | |
10044 | ||
10045 | power_domain = POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder); | |
10046 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
10047 | return false; | |
10048 | *power_domain_mask |= BIT(power_domain); | |
10049 | ||
10050 | tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder)); | |
10051 | ||
10052 | return tmp & PIPECONF_ENABLE; | |
10053 | } | |
10054 | ||
10055 | static bool bxt_get_dsi_transcoder_state(struct intel_crtc *crtc, | |
10056 | struct intel_crtc_state *pipe_config, | |
10057 | unsigned long *power_domain_mask) | |
10058 | { | |
10059 | struct drm_device *dev = crtc->base.dev; | |
10060 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10061 | enum intel_display_power_domain power_domain; | |
10062 | enum port port; | |
10063 | enum transcoder cpu_transcoder; | |
10064 | u32 tmp; | |
10065 | ||
10066 | pipe_config->has_dsi_encoder = false; | |
10067 | ||
10068 | for_each_port_masked(port, BIT(PORT_A) | BIT(PORT_C)) { | |
10069 | if (port == PORT_A) | |
10070 | cpu_transcoder = TRANSCODER_DSI_A; | |
10071 | else | |
10072 | cpu_transcoder = TRANSCODER_DSI_C; | |
10073 | ||
10074 | power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder); | |
10075 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
10076 | continue; | |
10077 | *power_domain_mask |= BIT(power_domain); | |
10078 | ||
10079 | /* | |
10080 | * The PLL needs to be enabled with a valid divider | |
10081 | * configuration, otherwise accessing DSI registers will hang | |
10082 | * the machine. See BSpec North Display Engine | |
10083 | * registers/MIPI[BXT]. We can break out here early, since we | |
10084 | * need the same DSI PLL to be enabled for both DSI ports. | |
10085 | */ | |
10086 | if (!intel_dsi_pll_is_enabled(dev_priv)) | |
10087 | break; | |
10088 | ||
10089 | /* XXX: this works for video mode only */ | |
10090 | tmp = I915_READ(BXT_MIPI_PORT_CTRL(port)); | |
10091 | if (!(tmp & DPI_ENABLE)) | |
10092 | continue; | |
10093 | ||
10094 | tmp = I915_READ(MIPI_CTRL(port)); | |
10095 | if ((tmp & BXT_PIPE_SELECT_MASK) != BXT_PIPE_SELECT(crtc->pipe)) | |
10096 | continue; | |
10097 | ||
10098 | pipe_config->cpu_transcoder = cpu_transcoder; | |
10099 | pipe_config->has_dsi_encoder = true; | |
10100 | break; | |
10101 | } | |
10102 | ||
10103 | return pipe_config->has_dsi_encoder; | |
10104 | } | |
10105 | ||
10106 | static void haswell_get_ddi_port_state(struct intel_crtc *crtc, | |
10107 | struct intel_crtc_state *pipe_config) | |
10108 | { | |
10109 | struct drm_device *dev = crtc->base.dev; | |
10110 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10111 | struct intel_shared_dpll *pll; | |
10112 | enum port port; | |
10113 | uint32_t tmp; | |
10114 | ||
10115 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder)); | |
10116 | ||
10117 | port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT; | |
10118 | ||
10119 | if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) | |
10120 | skylake_get_ddi_pll(dev_priv, port, pipe_config); | |
10121 | else if (IS_BROXTON(dev)) | |
10122 | bxt_get_ddi_pll(dev_priv, port, pipe_config); | |
10123 | else | |
10124 | haswell_get_ddi_pll(dev_priv, port, pipe_config); | |
10125 | ||
10126 | pll = pipe_config->shared_dpll; | |
10127 | if (pll) { | |
10128 | WARN_ON(!pll->funcs.get_hw_state(dev_priv, pll, | |
10129 | &pipe_config->dpll_hw_state)); | |
10130 | } | |
10131 | ||
10132 | /* | |
10133 | * Haswell has only FDI/PCH transcoder A. It is which is connected to | |
10134 | * DDI E. So just check whether this pipe is wired to DDI E and whether | |
10135 | * the PCH transcoder is on. | |
10136 | */ | |
10137 | if (INTEL_INFO(dev)->gen < 9 && | |
10138 | (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) { | |
10139 | pipe_config->has_pch_encoder = true; | |
10140 | ||
10141 | tmp = I915_READ(FDI_RX_CTL(PIPE_A)); | |
10142 | pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >> | |
10143 | FDI_DP_PORT_WIDTH_SHIFT) + 1; | |
10144 | ||
10145 | ironlake_get_fdi_m_n_config(crtc, pipe_config); | |
10146 | } | |
10147 | } | |
10148 | ||
10149 | static bool haswell_get_pipe_config(struct intel_crtc *crtc, | |
10150 | struct intel_crtc_state *pipe_config) | |
10151 | { | |
10152 | struct drm_device *dev = crtc->base.dev; | |
10153 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10154 | enum intel_display_power_domain power_domain; | |
10155 | unsigned long power_domain_mask; | |
10156 | bool active; | |
10157 | ||
10158 | power_domain = POWER_DOMAIN_PIPE(crtc->pipe); | |
10159 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
10160 | return false; | |
10161 | power_domain_mask = BIT(power_domain); | |
10162 | ||
10163 | pipe_config->shared_dpll = NULL; | |
10164 | ||
10165 | active = hsw_get_transcoder_state(crtc, pipe_config, &power_domain_mask); | |
10166 | ||
10167 | if (IS_BROXTON(dev_priv)) { | |
10168 | bxt_get_dsi_transcoder_state(crtc, pipe_config, | |
10169 | &power_domain_mask); | |
10170 | WARN_ON(active && pipe_config->has_dsi_encoder); | |
10171 | if (pipe_config->has_dsi_encoder) | |
10172 | active = true; | |
10173 | } | |
10174 | ||
10175 | if (!active) | |
10176 | goto out; | |
10177 | ||
10178 | if (!pipe_config->has_dsi_encoder) { | |
10179 | haswell_get_ddi_port_state(crtc, pipe_config); | |
10180 | intel_get_pipe_timings(crtc, pipe_config); | |
10181 | } | |
10182 | ||
10183 | intel_get_pipe_src_size(crtc, pipe_config); | |
10184 | ||
10185 | pipe_config->gamma_mode = | |
10186 | I915_READ(GAMMA_MODE(crtc->pipe)) & GAMMA_MODE_MODE_MASK; | |
10187 | ||
10188 | if (INTEL_INFO(dev)->gen >= 9) { | |
10189 | skl_init_scalers(dev, crtc, pipe_config); | |
10190 | } | |
10191 | ||
10192 | if (INTEL_INFO(dev)->gen >= 9) { | |
10193 | pipe_config->scaler_state.scaler_id = -1; | |
10194 | pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX); | |
10195 | } | |
10196 | ||
10197 | power_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe); | |
10198 | if (intel_display_power_get_if_enabled(dev_priv, power_domain)) { | |
10199 | power_domain_mask |= BIT(power_domain); | |
10200 | if (INTEL_INFO(dev)->gen >= 9) | |
10201 | skylake_get_pfit_config(crtc, pipe_config); | |
10202 | else | |
10203 | ironlake_get_pfit_config(crtc, pipe_config); | |
10204 | } | |
10205 | ||
10206 | if (IS_HASWELL(dev)) | |
10207 | pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) && | |
10208 | (I915_READ(IPS_CTL) & IPS_ENABLE); | |
10209 | ||
10210 | if (pipe_config->cpu_transcoder != TRANSCODER_EDP && | |
10211 | !transcoder_is_dsi(pipe_config->cpu_transcoder)) { | |
10212 | pipe_config->pixel_multiplier = | |
10213 | I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1; | |
10214 | } else { | |
10215 | pipe_config->pixel_multiplier = 1; | |
10216 | } | |
10217 | ||
10218 | out: | |
10219 | for_each_power_domain(power_domain, power_domain_mask) | |
10220 | intel_display_power_put(dev_priv, power_domain); | |
10221 | ||
10222 | return active; | |
10223 | } | |
10224 | ||
10225 | static void i845_update_cursor(struct drm_crtc *crtc, u32 base, | |
10226 | const struct intel_plane_state *plane_state) | |
10227 | { | |
10228 | struct drm_device *dev = crtc->dev; | |
10229 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10230 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
10231 | uint32_t cntl = 0, size = 0; | |
10232 | ||
10233 | if (plane_state && plane_state->visible) { | |
10234 | unsigned int width = plane_state->base.crtc_w; | |
10235 | unsigned int height = plane_state->base.crtc_h; | |
10236 | unsigned int stride = roundup_pow_of_two(width) * 4; | |
10237 | ||
10238 | switch (stride) { | |
10239 | default: | |
10240 | WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n", | |
10241 | width, stride); | |
10242 | stride = 256; | |
10243 | /* fallthrough */ | |
10244 | case 256: | |
10245 | case 512: | |
10246 | case 1024: | |
10247 | case 2048: | |
10248 | break; | |
10249 | } | |
10250 | ||
10251 | cntl |= CURSOR_ENABLE | | |
10252 | CURSOR_GAMMA_ENABLE | | |
10253 | CURSOR_FORMAT_ARGB | | |
10254 | CURSOR_STRIDE(stride); | |
10255 | ||
10256 | size = (height << 12) | width; | |
10257 | } | |
10258 | ||
10259 | if (intel_crtc->cursor_cntl != 0 && | |
10260 | (intel_crtc->cursor_base != base || | |
10261 | intel_crtc->cursor_size != size || | |
10262 | intel_crtc->cursor_cntl != cntl)) { | |
10263 | /* On these chipsets we can only modify the base/size/stride | |
10264 | * whilst the cursor is disabled. | |
10265 | */ | |
10266 | I915_WRITE(CURCNTR(PIPE_A), 0); | |
10267 | POSTING_READ(CURCNTR(PIPE_A)); | |
10268 | intel_crtc->cursor_cntl = 0; | |
10269 | } | |
10270 | ||
10271 | if (intel_crtc->cursor_base != base) { | |
10272 | I915_WRITE(CURBASE(PIPE_A), base); | |
10273 | intel_crtc->cursor_base = base; | |
10274 | } | |
10275 | ||
10276 | if (intel_crtc->cursor_size != size) { | |
10277 | I915_WRITE(CURSIZE, size); | |
10278 | intel_crtc->cursor_size = size; | |
10279 | } | |
10280 | ||
10281 | if (intel_crtc->cursor_cntl != cntl) { | |
10282 | I915_WRITE(CURCNTR(PIPE_A), cntl); | |
10283 | POSTING_READ(CURCNTR(PIPE_A)); | |
10284 | intel_crtc->cursor_cntl = cntl; | |
10285 | } | |
10286 | } | |
10287 | ||
10288 | static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base, | |
10289 | const struct intel_plane_state *plane_state) | |
10290 | { | |
10291 | struct drm_device *dev = crtc->dev; | |
10292 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10293 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
10294 | int pipe = intel_crtc->pipe; | |
10295 | uint32_t cntl = 0; | |
10296 | ||
10297 | if (plane_state && plane_state->visible) { | |
10298 | cntl = MCURSOR_GAMMA_ENABLE; | |
10299 | switch (plane_state->base.crtc_w) { | |
10300 | case 64: | |
10301 | cntl |= CURSOR_MODE_64_ARGB_AX; | |
10302 | break; | |
10303 | case 128: | |
10304 | cntl |= CURSOR_MODE_128_ARGB_AX; | |
10305 | break; | |
10306 | case 256: | |
10307 | cntl |= CURSOR_MODE_256_ARGB_AX; | |
10308 | break; | |
10309 | default: | |
10310 | MISSING_CASE(plane_state->base.crtc_w); | |
10311 | return; | |
10312 | } | |
10313 | cntl |= pipe << 28; /* Connect to correct pipe */ | |
10314 | ||
10315 | if (HAS_DDI(dev)) | |
10316 | cntl |= CURSOR_PIPE_CSC_ENABLE; | |
10317 | ||
10318 | if (plane_state->base.rotation == BIT(DRM_ROTATE_180)) | |
10319 | cntl |= CURSOR_ROTATE_180; | |
10320 | } | |
10321 | ||
10322 | if (intel_crtc->cursor_cntl != cntl) { | |
10323 | I915_WRITE(CURCNTR(pipe), cntl); | |
10324 | POSTING_READ(CURCNTR(pipe)); | |
10325 | intel_crtc->cursor_cntl = cntl; | |
10326 | } | |
10327 | ||
10328 | /* and commit changes on next vblank */ | |
10329 | I915_WRITE(CURBASE(pipe), base); | |
10330 | POSTING_READ(CURBASE(pipe)); | |
10331 | ||
10332 | intel_crtc->cursor_base = base; | |
10333 | } | |
10334 | ||
10335 | /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */ | |
10336 | static void intel_crtc_update_cursor(struct drm_crtc *crtc, | |
10337 | const struct intel_plane_state *plane_state) | |
10338 | { | |
10339 | struct drm_device *dev = crtc->dev; | |
10340 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10341 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
10342 | int pipe = intel_crtc->pipe; | |
10343 | u32 base = intel_crtc->cursor_addr; | |
10344 | u32 pos = 0; | |
10345 | ||
10346 | if (plane_state) { | |
10347 | int x = plane_state->base.crtc_x; | |
10348 | int y = plane_state->base.crtc_y; | |
10349 | ||
10350 | if (x < 0) { | |
10351 | pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT; | |
10352 | x = -x; | |
10353 | } | |
10354 | pos |= x << CURSOR_X_SHIFT; | |
10355 | ||
10356 | if (y < 0) { | |
10357 | pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT; | |
10358 | y = -y; | |
10359 | } | |
10360 | pos |= y << CURSOR_Y_SHIFT; | |
10361 | ||
10362 | /* ILK+ do this automagically */ | |
10363 | if (HAS_GMCH_DISPLAY(dev) && | |
10364 | plane_state->base.rotation == BIT(DRM_ROTATE_180)) { | |
10365 | base += (plane_state->base.crtc_h * | |
10366 | plane_state->base.crtc_w - 1) * 4; | |
10367 | } | |
10368 | } | |
10369 | ||
10370 | I915_WRITE(CURPOS(pipe), pos); | |
10371 | ||
10372 | if (IS_845G(dev) || IS_I865G(dev)) | |
10373 | i845_update_cursor(crtc, base, plane_state); | |
10374 | else | |
10375 | i9xx_update_cursor(crtc, base, plane_state); | |
10376 | } | |
10377 | ||
10378 | static bool cursor_size_ok(struct drm_device *dev, | |
10379 | uint32_t width, uint32_t height) | |
10380 | { | |
10381 | if (width == 0 || height == 0) | |
10382 | return false; | |
10383 | ||
10384 | /* | |
10385 | * 845g/865g are special in that they are only limited by | |
10386 | * the width of their cursors, the height is arbitrary up to | |
10387 | * the precision of the register. Everything else requires | |
10388 | * square cursors, limited to a few power-of-two sizes. | |
10389 | */ | |
10390 | if (IS_845G(dev) || IS_I865G(dev)) { | |
10391 | if ((width & 63) != 0) | |
10392 | return false; | |
10393 | ||
10394 | if (width > (IS_845G(dev) ? 64 : 512)) | |
10395 | return false; | |
10396 | ||
10397 | if (height > 1023) | |
10398 | return false; | |
10399 | } else { | |
10400 | switch (width | height) { | |
10401 | case 256: | |
10402 | case 128: | |
10403 | if (IS_GEN2(dev)) | |
10404 | return false; | |
10405 | case 64: | |
10406 | break; | |
10407 | default: | |
10408 | return false; | |
10409 | } | |
10410 | } | |
10411 | ||
10412 | return true; | |
10413 | } | |
10414 | ||
10415 | /* VESA 640x480x72Hz mode to set on the pipe */ | |
10416 | static struct drm_display_mode load_detect_mode = { | |
10417 | DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664, | |
10418 | 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC), | |
10419 | }; | |
10420 | ||
10421 | struct drm_framebuffer * | |
10422 | __intel_framebuffer_create(struct drm_device *dev, | |
10423 | struct drm_mode_fb_cmd2 *mode_cmd, | |
10424 | struct drm_i915_gem_object *obj) | |
10425 | { | |
10426 | struct intel_framebuffer *intel_fb; | |
10427 | int ret; | |
10428 | ||
10429 | intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL); | |
10430 | if (!intel_fb) | |
10431 | return ERR_PTR(-ENOMEM); | |
10432 | ||
10433 | ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj); | |
10434 | if (ret) | |
10435 | goto err; | |
10436 | ||
10437 | return &intel_fb->base; | |
10438 | ||
10439 | err: | |
10440 | kfree(intel_fb); | |
10441 | return ERR_PTR(ret); | |
10442 | } | |
10443 | ||
10444 | static struct drm_framebuffer * | |
10445 | intel_framebuffer_create(struct drm_device *dev, | |
10446 | struct drm_mode_fb_cmd2 *mode_cmd, | |
10447 | struct drm_i915_gem_object *obj) | |
10448 | { | |
10449 | struct drm_framebuffer *fb; | |
10450 | int ret; | |
10451 | ||
10452 | ret = i915_mutex_lock_interruptible(dev); | |
10453 | if (ret) | |
10454 | return ERR_PTR(ret); | |
10455 | fb = __intel_framebuffer_create(dev, mode_cmd, obj); | |
10456 | mutex_unlock(&dev->struct_mutex); | |
10457 | ||
10458 | return fb; | |
10459 | } | |
10460 | ||
10461 | static u32 | |
10462 | intel_framebuffer_pitch_for_width(int width, int bpp) | |
10463 | { | |
10464 | u32 pitch = DIV_ROUND_UP(width * bpp, 8); | |
10465 | return ALIGN(pitch, 64); | |
10466 | } | |
10467 | ||
10468 | static u32 | |
10469 | intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp) | |
10470 | { | |
10471 | u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp); | |
10472 | return PAGE_ALIGN(pitch * mode->vdisplay); | |
10473 | } | |
10474 | ||
10475 | static struct drm_framebuffer * | |
10476 | intel_framebuffer_create_for_mode(struct drm_device *dev, | |
10477 | struct drm_display_mode *mode, | |
10478 | int depth, int bpp) | |
10479 | { | |
10480 | struct drm_framebuffer *fb; | |
10481 | struct drm_i915_gem_object *obj; | |
10482 | struct drm_mode_fb_cmd2 mode_cmd = { 0 }; | |
10483 | ||
10484 | obj = i915_gem_object_create(dev, | |
10485 | intel_framebuffer_size_for_mode(mode, bpp)); | |
10486 | if (IS_ERR(obj)) | |
10487 | return ERR_CAST(obj); | |
10488 | ||
10489 | mode_cmd.width = mode->hdisplay; | |
10490 | mode_cmd.height = mode->vdisplay; | |
10491 | mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width, | |
10492 | bpp); | |
10493 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); | |
10494 | ||
10495 | fb = intel_framebuffer_create(dev, &mode_cmd, obj); | |
10496 | if (IS_ERR(fb)) | |
10497 | drm_gem_object_unreference_unlocked(&obj->base); | |
10498 | ||
10499 | return fb; | |
10500 | } | |
10501 | ||
10502 | static struct drm_framebuffer * | |
10503 | mode_fits_in_fbdev(struct drm_device *dev, | |
10504 | struct drm_display_mode *mode) | |
10505 | { | |
10506 | #ifdef CONFIG_DRM_FBDEV_EMULATION | |
10507 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10508 | struct drm_i915_gem_object *obj; | |
10509 | struct drm_framebuffer *fb; | |
10510 | ||
10511 | if (!dev_priv->fbdev) | |
10512 | return NULL; | |
10513 | ||
10514 | if (!dev_priv->fbdev->fb) | |
10515 | return NULL; | |
10516 | ||
10517 | obj = dev_priv->fbdev->fb->obj; | |
10518 | BUG_ON(!obj); | |
10519 | ||
10520 | fb = &dev_priv->fbdev->fb->base; | |
10521 | if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay, | |
10522 | fb->bits_per_pixel)) | |
10523 | return NULL; | |
10524 | ||
10525 | if (obj->base.size < mode->vdisplay * fb->pitches[0]) | |
10526 | return NULL; | |
10527 | ||
10528 | drm_framebuffer_reference(fb); | |
10529 | return fb; | |
10530 | #else | |
10531 | return NULL; | |
10532 | #endif | |
10533 | } | |
10534 | ||
10535 | static int intel_modeset_setup_plane_state(struct drm_atomic_state *state, | |
10536 | struct drm_crtc *crtc, | |
10537 | struct drm_display_mode *mode, | |
10538 | struct drm_framebuffer *fb, | |
10539 | int x, int y) | |
10540 | { | |
10541 | struct drm_plane_state *plane_state; | |
10542 | int hdisplay, vdisplay; | |
10543 | int ret; | |
10544 | ||
10545 | plane_state = drm_atomic_get_plane_state(state, crtc->primary); | |
10546 | if (IS_ERR(plane_state)) | |
10547 | return PTR_ERR(plane_state); | |
10548 | ||
10549 | if (mode) | |
10550 | drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay); | |
10551 | else | |
10552 | hdisplay = vdisplay = 0; | |
10553 | ||
10554 | ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL); | |
10555 | if (ret) | |
10556 | return ret; | |
10557 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
10558 | plane_state->crtc_x = 0; | |
10559 | plane_state->crtc_y = 0; | |
10560 | plane_state->crtc_w = hdisplay; | |
10561 | plane_state->crtc_h = vdisplay; | |
10562 | plane_state->src_x = x << 16; | |
10563 | plane_state->src_y = y << 16; | |
10564 | plane_state->src_w = hdisplay << 16; | |
10565 | plane_state->src_h = vdisplay << 16; | |
10566 | ||
10567 | return 0; | |
10568 | } | |
10569 | ||
10570 | bool intel_get_load_detect_pipe(struct drm_connector *connector, | |
10571 | struct drm_display_mode *mode, | |
10572 | struct intel_load_detect_pipe *old, | |
10573 | struct drm_modeset_acquire_ctx *ctx) | |
10574 | { | |
10575 | struct intel_crtc *intel_crtc; | |
10576 | struct intel_encoder *intel_encoder = | |
10577 | intel_attached_encoder(connector); | |
10578 | struct drm_crtc *possible_crtc; | |
10579 | struct drm_encoder *encoder = &intel_encoder->base; | |
10580 | struct drm_crtc *crtc = NULL; | |
10581 | struct drm_device *dev = encoder->dev; | |
10582 | struct drm_framebuffer *fb; | |
10583 | struct drm_mode_config *config = &dev->mode_config; | |
10584 | struct drm_atomic_state *state = NULL, *restore_state = NULL; | |
10585 | struct drm_connector_state *connector_state; | |
10586 | struct intel_crtc_state *crtc_state; | |
10587 | int ret, i = -1; | |
10588 | ||
10589 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n", | |
10590 | connector->base.id, connector->name, | |
10591 | encoder->base.id, encoder->name); | |
10592 | ||
10593 | old->restore_state = NULL; | |
10594 | ||
10595 | retry: | |
10596 | ret = drm_modeset_lock(&config->connection_mutex, ctx); | |
10597 | if (ret) | |
10598 | goto fail; | |
10599 | ||
10600 | /* | |
10601 | * Algorithm gets a little messy: | |
10602 | * | |
10603 | * - if the connector already has an assigned crtc, use it (but make | |
10604 | * sure it's on first) | |
10605 | * | |
10606 | * - try to find the first unused crtc that can drive this connector, | |
10607 | * and use that if we find one | |
10608 | */ | |
10609 | ||
10610 | /* See if we already have a CRTC for this connector */ | |
10611 | if (connector->state->crtc) { | |
10612 | crtc = connector->state->crtc; | |
10613 | ||
10614 | ret = drm_modeset_lock(&crtc->mutex, ctx); | |
10615 | if (ret) | |
10616 | goto fail; | |
10617 | ||
10618 | /* Make sure the crtc and connector are running */ | |
10619 | goto found; | |
10620 | } | |
10621 | ||
10622 | /* Find an unused one (if possible) */ | |
10623 | for_each_crtc(dev, possible_crtc) { | |
10624 | i++; | |
10625 | if (!(encoder->possible_crtcs & (1 << i))) | |
10626 | continue; | |
10627 | ||
10628 | ret = drm_modeset_lock(&possible_crtc->mutex, ctx); | |
10629 | if (ret) | |
10630 | goto fail; | |
10631 | ||
10632 | if (possible_crtc->state->enable) { | |
10633 | drm_modeset_unlock(&possible_crtc->mutex); | |
10634 | continue; | |
10635 | } | |
10636 | ||
10637 | crtc = possible_crtc; | |
10638 | break; | |
10639 | } | |
10640 | ||
10641 | /* | |
10642 | * If we didn't find an unused CRTC, don't use any. | |
10643 | */ | |
10644 | if (!crtc) { | |
10645 | DRM_DEBUG_KMS("no pipe available for load-detect\n"); | |
10646 | goto fail; | |
10647 | } | |
10648 | ||
10649 | found: | |
10650 | intel_crtc = to_intel_crtc(crtc); | |
10651 | ||
10652 | ret = drm_modeset_lock(&crtc->primary->mutex, ctx); | |
10653 | if (ret) | |
10654 | goto fail; | |
10655 | ||
10656 | state = drm_atomic_state_alloc(dev); | |
10657 | restore_state = drm_atomic_state_alloc(dev); | |
10658 | if (!state || !restore_state) { | |
10659 | ret = -ENOMEM; | |
10660 | goto fail; | |
10661 | } | |
10662 | ||
10663 | state->acquire_ctx = ctx; | |
10664 | restore_state->acquire_ctx = ctx; | |
10665 | ||
10666 | connector_state = drm_atomic_get_connector_state(state, connector); | |
10667 | if (IS_ERR(connector_state)) { | |
10668 | ret = PTR_ERR(connector_state); | |
10669 | goto fail; | |
10670 | } | |
10671 | ||
10672 | ret = drm_atomic_set_crtc_for_connector(connector_state, crtc); | |
10673 | if (ret) | |
10674 | goto fail; | |
10675 | ||
10676 | crtc_state = intel_atomic_get_crtc_state(state, intel_crtc); | |
10677 | if (IS_ERR(crtc_state)) { | |
10678 | ret = PTR_ERR(crtc_state); | |
10679 | goto fail; | |
10680 | } | |
10681 | ||
10682 | crtc_state->base.active = crtc_state->base.enable = true; | |
10683 | ||
10684 | if (!mode) | |
10685 | mode = &load_detect_mode; | |
10686 | ||
10687 | /* We need a framebuffer large enough to accommodate all accesses | |
10688 | * that the plane may generate whilst we perform load detection. | |
10689 | * We can not rely on the fbcon either being present (we get called | |
10690 | * during its initialisation to detect all boot displays, or it may | |
10691 | * not even exist) or that it is large enough to satisfy the | |
10692 | * requested mode. | |
10693 | */ | |
10694 | fb = mode_fits_in_fbdev(dev, mode); | |
10695 | if (fb == NULL) { | |
10696 | DRM_DEBUG_KMS("creating tmp fb for load-detection\n"); | |
10697 | fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32); | |
10698 | } else | |
10699 | DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n"); | |
10700 | if (IS_ERR(fb)) { | |
10701 | DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n"); | |
10702 | goto fail; | |
10703 | } | |
10704 | ||
10705 | ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0); | |
10706 | if (ret) | |
10707 | goto fail; | |
10708 | ||
10709 | drm_framebuffer_unreference(fb); | |
10710 | ||
10711 | ret = drm_atomic_set_mode_for_crtc(&crtc_state->base, mode); | |
10712 | if (ret) | |
10713 | goto fail; | |
10714 | ||
10715 | ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector)); | |
10716 | if (!ret) | |
10717 | ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc)); | |
10718 | if (!ret) | |
10719 | ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(restore_state, crtc->primary)); | |
10720 | if (ret) { | |
10721 | DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret); | |
10722 | goto fail; | |
10723 | } | |
10724 | ||
10725 | ret = drm_atomic_commit(state); | |
10726 | if (ret) { | |
10727 | DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n"); | |
10728 | goto fail; | |
10729 | } | |
10730 | ||
10731 | old->restore_state = restore_state; | |
10732 | ||
10733 | /* let the connector get through one full cycle before testing */ | |
10734 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
10735 | return true; | |
10736 | ||
10737 | fail: | |
10738 | drm_atomic_state_free(state); | |
10739 | drm_atomic_state_free(restore_state); | |
10740 | restore_state = state = NULL; | |
10741 | ||
10742 | if (ret == -EDEADLK) { | |
10743 | drm_modeset_backoff(ctx); | |
10744 | goto retry; | |
10745 | } | |
10746 | ||
10747 | return false; | |
10748 | } | |
10749 | ||
10750 | void intel_release_load_detect_pipe(struct drm_connector *connector, | |
10751 | struct intel_load_detect_pipe *old, | |
10752 | struct drm_modeset_acquire_ctx *ctx) | |
10753 | { | |
10754 | struct intel_encoder *intel_encoder = | |
10755 | intel_attached_encoder(connector); | |
10756 | struct drm_encoder *encoder = &intel_encoder->base; | |
10757 | struct drm_atomic_state *state = old->restore_state; | |
10758 | int ret; | |
10759 | ||
10760 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n", | |
10761 | connector->base.id, connector->name, | |
10762 | encoder->base.id, encoder->name); | |
10763 | ||
10764 | if (!state) | |
10765 | return; | |
10766 | ||
10767 | ret = drm_atomic_commit(state); | |
10768 | if (ret) { | |
10769 | DRM_DEBUG_KMS("Couldn't release load detect pipe: %i\n", ret); | |
10770 | drm_atomic_state_free(state); | |
10771 | } | |
10772 | } | |
10773 | ||
10774 | static int i9xx_pll_refclk(struct drm_device *dev, | |
10775 | const struct intel_crtc_state *pipe_config) | |
10776 | { | |
10777 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10778 | u32 dpll = pipe_config->dpll_hw_state.dpll; | |
10779 | ||
10780 | if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN) | |
10781 | return dev_priv->vbt.lvds_ssc_freq; | |
10782 | else if (HAS_PCH_SPLIT(dev)) | |
10783 | return 120000; | |
10784 | else if (!IS_GEN2(dev)) | |
10785 | return 96000; | |
10786 | else | |
10787 | return 48000; | |
10788 | } | |
10789 | ||
10790 | /* Returns the clock of the currently programmed mode of the given pipe. */ | |
10791 | static void i9xx_crtc_clock_get(struct intel_crtc *crtc, | |
10792 | struct intel_crtc_state *pipe_config) | |
10793 | { | |
10794 | struct drm_device *dev = crtc->base.dev; | |
10795 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10796 | int pipe = pipe_config->cpu_transcoder; | |
10797 | u32 dpll = pipe_config->dpll_hw_state.dpll; | |
10798 | u32 fp; | |
10799 | struct dpll clock; | |
10800 | int port_clock; | |
10801 | int refclk = i9xx_pll_refclk(dev, pipe_config); | |
10802 | ||
10803 | if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0) | |
10804 | fp = pipe_config->dpll_hw_state.fp0; | |
10805 | else | |
10806 | fp = pipe_config->dpll_hw_state.fp1; | |
10807 | ||
10808 | clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT; | |
10809 | if (IS_PINEVIEW(dev)) { | |
10810 | clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1; | |
10811 | clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT; | |
10812 | } else { | |
10813 | clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT; | |
10814 | clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT; | |
10815 | } | |
10816 | ||
10817 | if (!IS_GEN2(dev)) { | |
10818 | if (IS_PINEVIEW(dev)) | |
10819 | clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >> | |
10820 | DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW); | |
10821 | else | |
10822 | clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >> | |
10823 | DPLL_FPA01_P1_POST_DIV_SHIFT); | |
10824 | ||
10825 | switch (dpll & DPLL_MODE_MASK) { | |
10826 | case DPLLB_MODE_DAC_SERIAL: | |
10827 | clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ? | |
10828 | 5 : 10; | |
10829 | break; | |
10830 | case DPLLB_MODE_LVDS: | |
10831 | clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ? | |
10832 | 7 : 14; | |
10833 | break; | |
10834 | default: | |
10835 | DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed " | |
10836 | "mode\n", (int)(dpll & DPLL_MODE_MASK)); | |
10837 | return; | |
10838 | } | |
10839 | ||
10840 | if (IS_PINEVIEW(dev)) | |
10841 | port_clock = pnv_calc_dpll_params(refclk, &clock); | |
10842 | else | |
10843 | port_clock = i9xx_calc_dpll_params(refclk, &clock); | |
10844 | } else { | |
10845 | u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS); | |
10846 | bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN); | |
10847 | ||
10848 | if (is_lvds) { | |
10849 | clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >> | |
10850 | DPLL_FPA01_P1_POST_DIV_SHIFT); | |
10851 | ||
10852 | if (lvds & LVDS_CLKB_POWER_UP) | |
10853 | clock.p2 = 7; | |
10854 | else | |
10855 | clock.p2 = 14; | |
10856 | } else { | |
10857 | if (dpll & PLL_P1_DIVIDE_BY_TWO) | |
10858 | clock.p1 = 2; | |
10859 | else { | |
10860 | clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >> | |
10861 | DPLL_FPA01_P1_POST_DIV_SHIFT) + 2; | |
10862 | } | |
10863 | if (dpll & PLL_P2_DIVIDE_BY_4) | |
10864 | clock.p2 = 4; | |
10865 | else | |
10866 | clock.p2 = 2; | |
10867 | } | |
10868 | ||
10869 | port_clock = i9xx_calc_dpll_params(refclk, &clock); | |
10870 | } | |
10871 | ||
10872 | /* | |
10873 | * This value includes pixel_multiplier. We will use | |
10874 | * port_clock to compute adjusted_mode.crtc_clock in the | |
10875 | * encoder's get_config() function. | |
10876 | */ | |
10877 | pipe_config->port_clock = port_clock; | |
10878 | } | |
10879 | ||
10880 | int intel_dotclock_calculate(int link_freq, | |
10881 | const struct intel_link_m_n *m_n) | |
10882 | { | |
10883 | /* | |
10884 | * The calculation for the data clock is: | |
10885 | * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp | |
10886 | * But we want to avoid losing precison if possible, so: | |
10887 | * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp)) | |
10888 | * | |
10889 | * and the link clock is simpler: | |
10890 | * link_clock = (m * link_clock) / n | |
10891 | */ | |
10892 | ||
10893 | if (!m_n->link_n) | |
10894 | return 0; | |
10895 | ||
10896 | return div_u64((u64)m_n->link_m * link_freq, m_n->link_n); | |
10897 | } | |
10898 | ||
10899 | static void ironlake_pch_clock_get(struct intel_crtc *crtc, | |
10900 | struct intel_crtc_state *pipe_config) | |
10901 | { | |
10902 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
10903 | ||
10904 | /* read out port_clock from the DPLL */ | |
10905 | i9xx_crtc_clock_get(crtc, pipe_config); | |
10906 | ||
10907 | /* | |
10908 | * In case there is an active pipe without active ports, | |
10909 | * we may need some idea for the dotclock anyway. | |
10910 | * Calculate one based on the FDI configuration. | |
10911 | */ | |
10912 | pipe_config->base.adjusted_mode.crtc_clock = | |
10913 | intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config), | |
10914 | &pipe_config->fdi_m_n); | |
10915 | } | |
10916 | ||
10917 | /** Returns the currently programmed mode of the given pipe. */ | |
10918 | struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev, | |
10919 | struct drm_crtc *crtc) | |
10920 | { | |
10921 | struct drm_i915_private *dev_priv = dev->dev_private; | |
10922 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
10923 | enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder; | |
10924 | struct drm_display_mode *mode; | |
10925 | struct intel_crtc_state *pipe_config; | |
10926 | int htot = I915_READ(HTOTAL(cpu_transcoder)); | |
10927 | int hsync = I915_READ(HSYNC(cpu_transcoder)); | |
10928 | int vtot = I915_READ(VTOTAL(cpu_transcoder)); | |
10929 | int vsync = I915_READ(VSYNC(cpu_transcoder)); | |
10930 | enum pipe pipe = intel_crtc->pipe; | |
10931 | ||
10932 | mode = kzalloc(sizeof(*mode), GFP_KERNEL); | |
10933 | if (!mode) | |
10934 | return NULL; | |
10935 | ||
10936 | pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL); | |
10937 | if (!pipe_config) { | |
10938 | kfree(mode); | |
10939 | return NULL; | |
10940 | } | |
10941 | ||
10942 | /* | |
10943 | * Construct a pipe_config sufficient for getting the clock info | |
10944 | * back out of crtc_clock_get. | |
10945 | * | |
10946 | * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need | |
10947 | * to use a real value here instead. | |
10948 | */ | |
10949 | pipe_config->cpu_transcoder = (enum transcoder) pipe; | |
10950 | pipe_config->pixel_multiplier = 1; | |
10951 | pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(pipe)); | |
10952 | pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(pipe)); | |
10953 | pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(pipe)); | |
10954 | i9xx_crtc_clock_get(intel_crtc, pipe_config); | |
10955 | ||
10956 | mode->clock = pipe_config->port_clock / pipe_config->pixel_multiplier; | |
10957 | mode->hdisplay = (htot & 0xffff) + 1; | |
10958 | mode->htotal = ((htot & 0xffff0000) >> 16) + 1; | |
10959 | mode->hsync_start = (hsync & 0xffff) + 1; | |
10960 | mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1; | |
10961 | mode->vdisplay = (vtot & 0xffff) + 1; | |
10962 | mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1; | |
10963 | mode->vsync_start = (vsync & 0xffff) + 1; | |
10964 | mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1; | |
10965 | ||
10966 | drm_mode_set_name(mode); | |
10967 | ||
10968 | kfree(pipe_config); | |
10969 | ||
10970 | return mode; | |
10971 | } | |
10972 | ||
10973 | void intel_mark_busy(struct drm_i915_private *dev_priv) | |
10974 | { | |
10975 | if (dev_priv->mm.busy) | |
10976 | return; | |
10977 | ||
10978 | intel_runtime_pm_get(dev_priv); | |
10979 | i915_update_gfx_val(dev_priv); | |
10980 | if (INTEL_GEN(dev_priv) >= 6) | |
10981 | gen6_rps_busy(dev_priv); | |
10982 | dev_priv->mm.busy = true; | |
10983 | } | |
10984 | ||
10985 | void intel_mark_idle(struct drm_i915_private *dev_priv) | |
10986 | { | |
10987 | if (!dev_priv->mm.busy) | |
10988 | return; | |
10989 | ||
10990 | dev_priv->mm.busy = false; | |
10991 | ||
10992 | if (INTEL_GEN(dev_priv) >= 6) | |
10993 | gen6_rps_idle(dev_priv); | |
10994 | ||
10995 | intel_runtime_pm_put(dev_priv); | |
10996 | } | |
10997 | ||
10998 | static void intel_crtc_destroy(struct drm_crtc *crtc) | |
10999 | { | |
11000 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11001 | struct drm_device *dev = crtc->dev; | |
11002 | struct intel_flip_work *work; | |
11003 | ||
11004 | spin_lock_irq(&dev->event_lock); | |
11005 | work = intel_crtc->flip_work; | |
11006 | intel_crtc->flip_work = NULL; | |
11007 | spin_unlock_irq(&dev->event_lock); | |
11008 | ||
11009 | if (work) { | |
11010 | cancel_work_sync(&work->mmio_work); | |
11011 | cancel_work_sync(&work->unpin_work); | |
11012 | kfree(work); | |
11013 | } | |
11014 | ||
11015 | drm_crtc_cleanup(crtc); | |
11016 | ||
11017 | kfree(intel_crtc); | |
11018 | } | |
11019 | ||
11020 | static void intel_unpin_work_fn(struct work_struct *__work) | |
11021 | { | |
11022 | struct intel_flip_work *work = | |
11023 | container_of(__work, struct intel_flip_work, unpin_work); | |
11024 | struct intel_crtc *crtc = to_intel_crtc(work->crtc); | |
11025 | struct drm_device *dev = crtc->base.dev; | |
11026 | struct drm_plane *primary = crtc->base.primary; | |
11027 | ||
11028 | if (is_mmio_work(work)) | |
11029 | flush_work(&work->mmio_work); | |
11030 | ||
11031 | mutex_lock(&dev->struct_mutex); | |
11032 | intel_unpin_fb_obj(work->old_fb, primary->state->rotation); | |
11033 | drm_gem_object_unreference(&work->pending_flip_obj->base); | |
11034 | ||
11035 | if (work->flip_queued_req) | |
11036 | i915_gem_request_assign(&work->flip_queued_req, NULL); | |
11037 | mutex_unlock(&dev->struct_mutex); | |
11038 | ||
11039 | intel_frontbuffer_flip_complete(dev, to_intel_plane(primary)->frontbuffer_bit); | |
11040 | intel_fbc_post_update(crtc); | |
11041 | drm_framebuffer_unreference(work->old_fb); | |
11042 | ||
11043 | BUG_ON(atomic_read(&crtc->unpin_work_count) == 0); | |
11044 | atomic_dec(&crtc->unpin_work_count); | |
11045 | ||
11046 | kfree(work); | |
11047 | } | |
11048 | ||
11049 | /* Is 'a' after or equal to 'b'? */ | |
11050 | static bool g4x_flip_count_after_eq(u32 a, u32 b) | |
11051 | { | |
11052 | return !((a - b) & 0x80000000); | |
11053 | } | |
11054 | ||
11055 | static bool __pageflip_finished_cs(struct intel_crtc *crtc, | |
11056 | struct intel_flip_work *work) | |
11057 | { | |
11058 | struct drm_device *dev = crtc->base.dev; | |
11059 | struct drm_i915_private *dev_priv = dev->dev_private; | |
11060 | unsigned reset_counter; | |
11061 | ||
11062 | reset_counter = i915_reset_counter(&dev_priv->gpu_error); | |
11063 | if (crtc->reset_counter != reset_counter) | |
11064 | return true; | |
11065 | ||
11066 | /* | |
11067 | * The relevant registers doen't exist on pre-ctg. | |
11068 | * As the flip done interrupt doesn't trigger for mmio | |
11069 | * flips on gmch platforms, a flip count check isn't | |
11070 | * really needed there. But since ctg has the registers, | |
11071 | * include it in the check anyway. | |
11072 | */ | |
11073 | if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev)) | |
11074 | return true; | |
11075 | ||
11076 | /* | |
11077 | * BDW signals flip done immediately if the plane | |
11078 | * is disabled, even if the plane enable is already | |
11079 | * armed to occur at the next vblank :( | |
11080 | */ | |
11081 | ||
11082 | /* | |
11083 | * A DSPSURFLIVE check isn't enough in case the mmio and CS flips | |
11084 | * used the same base address. In that case the mmio flip might | |
11085 | * have completed, but the CS hasn't even executed the flip yet. | |
11086 | * | |
11087 | * A flip count check isn't enough as the CS might have updated | |
11088 | * the base address just after start of vblank, but before we | |
11089 | * managed to process the interrupt. This means we'd complete the | |
11090 | * CS flip too soon. | |
11091 | * | |
11092 | * Combining both checks should get us a good enough result. It may | |
11093 | * still happen that the CS flip has been executed, but has not | |
11094 | * yet actually completed. But in case the base address is the same | |
11095 | * anyway, we don't really care. | |
11096 | */ | |
11097 | return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) == | |
11098 | crtc->flip_work->gtt_offset && | |
11099 | g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_G4X(crtc->pipe)), | |
11100 | crtc->flip_work->flip_count); | |
11101 | } | |
11102 | ||
11103 | static bool | |
11104 | __pageflip_finished_mmio(struct intel_crtc *crtc, | |
11105 | struct intel_flip_work *work) | |
11106 | { | |
11107 | /* | |
11108 | * MMIO work completes when vblank is different from | |
11109 | * flip_queued_vblank. | |
11110 | * | |
11111 | * Reset counter value doesn't matter, this is handled by | |
11112 | * i915_wait_request finishing early, so no need to handle | |
11113 | * reset here. | |
11114 | */ | |
11115 | return intel_crtc_get_vblank_counter(crtc) != work->flip_queued_vblank; | |
11116 | } | |
11117 | ||
11118 | ||
11119 | static bool pageflip_finished(struct intel_crtc *crtc, | |
11120 | struct intel_flip_work *work) | |
11121 | { | |
11122 | if (!atomic_read(&work->pending)) | |
11123 | return false; | |
11124 | ||
11125 | smp_rmb(); | |
11126 | ||
11127 | if (is_mmio_work(work)) | |
11128 | return __pageflip_finished_mmio(crtc, work); | |
11129 | else | |
11130 | return __pageflip_finished_cs(crtc, work); | |
11131 | } | |
11132 | ||
11133 | void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe) | |
11134 | { | |
11135 | struct drm_device *dev = dev_priv->dev; | |
11136 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
11137 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11138 | struct intel_flip_work *work; | |
11139 | unsigned long flags; | |
11140 | ||
11141 | /* Ignore early vblank irqs */ | |
11142 | if (!crtc) | |
11143 | return; | |
11144 | ||
11145 | /* | |
11146 | * This is called both by irq handlers and the reset code (to complete | |
11147 | * lost pageflips) so needs the full irqsave spinlocks. | |
11148 | */ | |
11149 | spin_lock_irqsave(&dev->event_lock, flags); | |
11150 | work = intel_crtc->flip_work; | |
11151 | ||
11152 | if (work != NULL && | |
11153 | !is_mmio_work(work) && | |
11154 | pageflip_finished(intel_crtc, work)) | |
11155 | page_flip_completed(intel_crtc); | |
11156 | ||
11157 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
11158 | } | |
11159 | ||
11160 | void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe) | |
11161 | { | |
11162 | struct drm_device *dev = dev_priv->dev; | |
11163 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
11164 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11165 | struct intel_flip_work *work; | |
11166 | unsigned long flags; | |
11167 | ||
11168 | /* Ignore early vblank irqs */ | |
11169 | if (!crtc) | |
11170 | return; | |
11171 | ||
11172 | /* | |
11173 | * This is called both by irq handlers and the reset code (to complete | |
11174 | * lost pageflips) so needs the full irqsave spinlocks. | |
11175 | */ | |
11176 | spin_lock_irqsave(&dev->event_lock, flags); | |
11177 | work = intel_crtc->flip_work; | |
11178 | ||
11179 | if (work != NULL && | |
11180 | is_mmio_work(work) && | |
11181 | pageflip_finished(intel_crtc, work)) | |
11182 | page_flip_completed(intel_crtc); | |
11183 | ||
11184 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
11185 | } | |
11186 | ||
11187 | static inline void intel_mark_page_flip_active(struct intel_crtc *crtc, | |
11188 | struct intel_flip_work *work) | |
11189 | { | |
11190 | work->flip_queued_vblank = intel_crtc_get_vblank_counter(crtc); | |
11191 | ||
11192 | /* Ensure that the work item is consistent when activating it ... */ | |
11193 | smp_mb__before_atomic(); | |
11194 | atomic_set(&work->pending, 1); | |
11195 | } | |
11196 | ||
11197 | static int intel_gen2_queue_flip(struct drm_device *dev, | |
11198 | struct drm_crtc *crtc, | |
11199 | struct drm_framebuffer *fb, | |
11200 | struct drm_i915_gem_object *obj, | |
11201 | struct drm_i915_gem_request *req, | |
11202 | uint32_t flags) | |
11203 | { | |
11204 | struct intel_engine_cs *engine = req->engine; | |
11205 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11206 | u32 flip_mask; | |
11207 | int ret; | |
11208 | ||
11209 | ret = intel_ring_begin(req, 6); | |
11210 | if (ret) | |
11211 | return ret; | |
11212 | ||
11213 | /* Can't queue multiple flips, so wait for the previous | |
11214 | * one to finish before executing the next. | |
11215 | */ | |
11216 | if (intel_crtc->plane) | |
11217 | flip_mask = MI_WAIT_FOR_PLANE_B_FLIP; | |
11218 | else | |
11219 | flip_mask = MI_WAIT_FOR_PLANE_A_FLIP; | |
11220 | intel_ring_emit(engine, MI_WAIT_FOR_EVENT | flip_mask); | |
11221 | intel_ring_emit(engine, MI_NOOP); | |
11222 | intel_ring_emit(engine, MI_DISPLAY_FLIP | | |
11223 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); | |
11224 | intel_ring_emit(engine, fb->pitches[0]); | |
11225 | intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset); | |
11226 | intel_ring_emit(engine, 0); /* aux display base address, unused */ | |
11227 | ||
11228 | return 0; | |
11229 | } | |
11230 | ||
11231 | static int intel_gen3_queue_flip(struct drm_device *dev, | |
11232 | struct drm_crtc *crtc, | |
11233 | struct drm_framebuffer *fb, | |
11234 | struct drm_i915_gem_object *obj, | |
11235 | struct drm_i915_gem_request *req, | |
11236 | uint32_t flags) | |
11237 | { | |
11238 | struct intel_engine_cs *engine = req->engine; | |
11239 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11240 | u32 flip_mask; | |
11241 | int ret; | |
11242 | ||
11243 | ret = intel_ring_begin(req, 6); | |
11244 | if (ret) | |
11245 | return ret; | |
11246 | ||
11247 | if (intel_crtc->plane) | |
11248 | flip_mask = MI_WAIT_FOR_PLANE_B_FLIP; | |
11249 | else | |
11250 | flip_mask = MI_WAIT_FOR_PLANE_A_FLIP; | |
11251 | intel_ring_emit(engine, MI_WAIT_FOR_EVENT | flip_mask); | |
11252 | intel_ring_emit(engine, MI_NOOP); | |
11253 | intel_ring_emit(engine, MI_DISPLAY_FLIP_I915 | | |
11254 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); | |
11255 | intel_ring_emit(engine, fb->pitches[0]); | |
11256 | intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset); | |
11257 | intel_ring_emit(engine, MI_NOOP); | |
11258 | ||
11259 | return 0; | |
11260 | } | |
11261 | ||
11262 | static int intel_gen4_queue_flip(struct drm_device *dev, | |
11263 | struct drm_crtc *crtc, | |
11264 | struct drm_framebuffer *fb, | |
11265 | struct drm_i915_gem_object *obj, | |
11266 | struct drm_i915_gem_request *req, | |
11267 | uint32_t flags) | |
11268 | { | |
11269 | struct intel_engine_cs *engine = req->engine; | |
11270 | struct drm_i915_private *dev_priv = dev->dev_private; | |
11271 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11272 | uint32_t pf, pipesrc; | |
11273 | int ret; | |
11274 | ||
11275 | ret = intel_ring_begin(req, 4); | |
11276 | if (ret) | |
11277 | return ret; | |
11278 | ||
11279 | /* i965+ uses the linear or tiled offsets from the | |
11280 | * Display Registers (which do not change across a page-flip) | |
11281 | * so we need only reprogram the base address. | |
11282 | */ | |
11283 | intel_ring_emit(engine, MI_DISPLAY_FLIP | | |
11284 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); | |
11285 | intel_ring_emit(engine, fb->pitches[0]); | |
11286 | intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset | | |
11287 | obj->tiling_mode); | |
11288 | ||
11289 | /* XXX Enabling the panel-fitter across page-flip is so far | |
11290 | * untested on non-native modes, so ignore it for now. | |
11291 | * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE; | |
11292 | */ | |
11293 | pf = 0; | |
11294 | pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff; | |
11295 | intel_ring_emit(engine, pf | pipesrc); | |
11296 | ||
11297 | return 0; | |
11298 | } | |
11299 | ||
11300 | static int intel_gen6_queue_flip(struct drm_device *dev, | |
11301 | struct drm_crtc *crtc, | |
11302 | struct drm_framebuffer *fb, | |
11303 | struct drm_i915_gem_object *obj, | |
11304 | struct drm_i915_gem_request *req, | |
11305 | uint32_t flags) | |
11306 | { | |
11307 | struct intel_engine_cs *engine = req->engine; | |
11308 | struct drm_i915_private *dev_priv = dev->dev_private; | |
11309 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11310 | uint32_t pf, pipesrc; | |
11311 | int ret; | |
11312 | ||
11313 | ret = intel_ring_begin(req, 4); | |
11314 | if (ret) | |
11315 | return ret; | |
11316 | ||
11317 | intel_ring_emit(engine, MI_DISPLAY_FLIP | | |
11318 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); | |
11319 | intel_ring_emit(engine, fb->pitches[0] | obj->tiling_mode); | |
11320 | intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset); | |
11321 | ||
11322 | /* Contrary to the suggestions in the documentation, | |
11323 | * "Enable Panel Fitter" does not seem to be required when page | |
11324 | * flipping with a non-native mode, and worse causes a normal | |
11325 | * modeset to fail. | |
11326 | * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE; | |
11327 | */ | |
11328 | pf = 0; | |
11329 | pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff; | |
11330 | intel_ring_emit(engine, pf | pipesrc); | |
11331 | ||
11332 | return 0; | |
11333 | } | |
11334 | ||
11335 | static int intel_gen7_queue_flip(struct drm_device *dev, | |
11336 | struct drm_crtc *crtc, | |
11337 | struct drm_framebuffer *fb, | |
11338 | struct drm_i915_gem_object *obj, | |
11339 | struct drm_i915_gem_request *req, | |
11340 | uint32_t flags) | |
11341 | { | |
11342 | struct intel_engine_cs *engine = req->engine; | |
11343 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11344 | uint32_t plane_bit = 0; | |
11345 | int len, ret; | |
11346 | ||
11347 | switch (intel_crtc->plane) { | |
11348 | case PLANE_A: | |
11349 | plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A; | |
11350 | break; | |
11351 | case PLANE_B: | |
11352 | plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B; | |
11353 | break; | |
11354 | case PLANE_C: | |
11355 | plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C; | |
11356 | break; | |
11357 | default: | |
11358 | WARN_ONCE(1, "unknown plane in flip command\n"); | |
11359 | return -ENODEV; | |
11360 | } | |
11361 | ||
11362 | len = 4; | |
11363 | if (engine->id == RCS) { | |
11364 | len += 6; | |
11365 | /* | |
11366 | * On Gen 8, SRM is now taking an extra dword to accommodate | |
11367 | * 48bits addresses, and we need a NOOP for the batch size to | |
11368 | * stay even. | |
11369 | */ | |
11370 | if (IS_GEN8(dev)) | |
11371 | len += 2; | |
11372 | } | |
11373 | ||
11374 | /* | |
11375 | * BSpec MI_DISPLAY_FLIP for IVB: | |
11376 | * "The full packet must be contained within the same cache line." | |
11377 | * | |
11378 | * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same | |
11379 | * cacheline, if we ever start emitting more commands before | |
11380 | * the MI_DISPLAY_FLIP we may need to first emit everything else, | |
11381 | * then do the cacheline alignment, and finally emit the | |
11382 | * MI_DISPLAY_FLIP. | |
11383 | */ | |
11384 | ret = intel_ring_cacheline_align(req); | |
11385 | if (ret) | |
11386 | return ret; | |
11387 | ||
11388 | ret = intel_ring_begin(req, len); | |
11389 | if (ret) | |
11390 | return ret; | |
11391 | ||
11392 | /* Unmask the flip-done completion message. Note that the bspec says that | |
11393 | * we should do this for both the BCS and RCS, and that we must not unmask | |
11394 | * more than one flip event at any time (or ensure that one flip message | |
11395 | * can be sent by waiting for flip-done prior to queueing new flips). | |
11396 | * Experimentation says that BCS works despite DERRMR masking all | |
11397 | * flip-done completion events and that unmasking all planes at once | |
11398 | * for the RCS also doesn't appear to drop events. Setting the DERRMR | |
11399 | * to zero does lead to lockups within MI_DISPLAY_FLIP. | |
11400 | */ | |
11401 | if (engine->id == RCS) { | |
11402 | intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1)); | |
11403 | intel_ring_emit_reg(engine, DERRMR); | |
11404 | intel_ring_emit(engine, ~(DERRMR_PIPEA_PRI_FLIP_DONE | | |
11405 | DERRMR_PIPEB_PRI_FLIP_DONE | | |
11406 | DERRMR_PIPEC_PRI_FLIP_DONE)); | |
11407 | if (IS_GEN8(dev)) | |
11408 | intel_ring_emit(engine, MI_STORE_REGISTER_MEM_GEN8 | | |
11409 | MI_SRM_LRM_GLOBAL_GTT); | |
11410 | else | |
11411 | intel_ring_emit(engine, MI_STORE_REGISTER_MEM | | |
11412 | MI_SRM_LRM_GLOBAL_GTT); | |
11413 | intel_ring_emit_reg(engine, DERRMR); | |
11414 | intel_ring_emit(engine, engine->scratch.gtt_offset + 256); | |
11415 | if (IS_GEN8(dev)) { | |
11416 | intel_ring_emit(engine, 0); | |
11417 | intel_ring_emit(engine, MI_NOOP); | |
11418 | } | |
11419 | } | |
11420 | ||
11421 | intel_ring_emit(engine, MI_DISPLAY_FLIP_I915 | plane_bit); | |
11422 | intel_ring_emit(engine, (fb->pitches[0] | obj->tiling_mode)); | |
11423 | intel_ring_emit(engine, intel_crtc->flip_work->gtt_offset); | |
11424 | intel_ring_emit(engine, (MI_NOOP)); | |
11425 | ||
11426 | return 0; | |
11427 | } | |
11428 | ||
11429 | static bool use_mmio_flip(struct intel_engine_cs *engine, | |
11430 | struct drm_i915_gem_object *obj) | |
11431 | { | |
11432 | /* | |
11433 | * This is not being used for older platforms, because | |
11434 | * non-availability of flip done interrupt forces us to use | |
11435 | * CS flips. Older platforms derive flip done using some clever | |
11436 | * tricks involving the flip_pending status bits and vblank irqs. | |
11437 | * So using MMIO flips there would disrupt this mechanism. | |
11438 | */ | |
11439 | ||
11440 | if (engine == NULL) | |
11441 | return true; | |
11442 | ||
11443 | if (INTEL_GEN(engine->i915) < 5) | |
11444 | return false; | |
11445 | ||
11446 | if (i915.use_mmio_flip < 0) | |
11447 | return false; | |
11448 | else if (i915.use_mmio_flip > 0) | |
11449 | return true; | |
11450 | else if (i915.enable_execlists) | |
11451 | return true; | |
11452 | else if (obj->base.dma_buf && | |
11453 | !reservation_object_test_signaled_rcu(obj->base.dma_buf->resv, | |
11454 | false)) | |
11455 | return true; | |
11456 | else | |
11457 | return engine != i915_gem_request_get_engine(obj->last_write_req); | |
11458 | } | |
11459 | ||
11460 | static void skl_do_mmio_flip(struct intel_crtc *intel_crtc, | |
11461 | unsigned int rotation, | |
11462 | struct intel_flip_work *work) | |
11463 | { | |
11464 | struct drm_device *dev = intel_crtc->base.dev; | |
11465 | struct drm_i915_private *dev_priv = dev->dev_private; | |
11466 | struct drm_framebuffer *fb = intel_crtc->base.primary->fb; | |
11467 | const enum pipe pipe = intel_crtc->pipe; | |
11468 | u32 ctl, stride, tile_height; | |
11469 | ||
11470 | ctl = I915_READ(PLANE_CTL(pipe, 0)); | |
11471 | ctl &= ~PLANE_CTL_TILED_MASK; | |
11472 | switch (fb->modifier[0]) { | |
11473 | case DRM_FORMAT_MOD_NONE: | |
11474 | break; | |
11475 | case I915_FORMAT_MOD_X_TILED: | |
11476 | ctl |= PLANE_CTL_TILED_X; | |
11477 | break; | |
11478 | case I915_FORMAT_MOD_Y_TILED: | |
11479 | ctl |= PLANE_CTL_TILED_Y; | |
11480 | break; | |
11481 | case I915_FORMAT_MOD_Yf_TILED: | |
11482 | ctl |= PLANE_CTL_TILED_YF; | |
11483 | break; | |
11484 | default: | |
11485 | MISSING_CASE(fb->modifier[0]); | |
11486 | } | |
11487 | ||
11488 | /* | |
11489 | * The stride is either expressed as a multiple of 64 bytes chunks for | |
11490 | * linear buffers or in number of tiles for tiled buffers. | |
11491 | */ | |
11492 | if (intel_rotation_90_or_270(rotation)) { | |
11493 | /* stride = Surface height in tiles */ | |
11494 | tile_height = intel_tile_height(dev_priv, fb->modifier[0], 0); | |
11495 | stride = DIV_ROUND_UP(fb->height, tile_height); | |
11496 | } else { | |
11497 | stride = fb->pitches[0] / | |
11498 | intel_fb_stride_alignment(dev_priv, fb->modifier[0], | |
11499 | fb->pixel_format); | |
11500 | } | |
11501 | ||
11502 | /* | |
11503 | * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on | |
11504 | * PLANE_SURF updates, the update is then guaranteed to be atomic. | |
11505 | */ | |
11506 | I915_WRITE(PLANE_CTL(pipe, 0), ctl); | |
11507 | I915_WRITE(PLANE_STRIDE(pipe, 0), stride); | |
11508 | ||
11509 | I915_WRITE(PLANE_SURF(pipe, 0), work->gtt_offset); | |
11510 | POSTING_READ(PLANE_SURF(pipe, 0)); | |
11511 | } | |
11512 | ||
11513 | static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc, | |
11514 | struct intel_flip_work *work) | |
11515 | { | |
11516 | struct drm_device *dev = intel_crtc->base.dev; | |
11517 | struct drm_i915_private *dev_priv = dev->dev_private; | |
11518 | struct intel_framebuffer *intel_fb = | |
11519 | to_intel_framebuffer(intel_crtc->base.primary->fb); | |
11520 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
11521 | i915_reg_t reg = DSPCNTR(intel_crtc->plane); | |
11522 | u32 dspcntr; | |
11523 | ||
11524 | dspcntr = I915_READ(reg); | |
11525 | ||
11526 | if (obj->tiling_mode != I915_TILING_NONE) | |
11527 | dspcntr |= DISPPLANE_TILED; | |
11528 | else | |
11529 | dspcntr &= ~DISPPLANE_TILED; | |
11530 | ||
11531 | I915_WRITE(reg, dspcntr); | |
11532 | ||
11533 | I915_WRITE(DSPSURF(intel_crtc->plane), work->gtt_offset); | |
11534 | POSTING_READ(DSPSURF(intel_crtc->plane)); | |
11535 | } | |
11536 | ||
11537 | static void intel_mmio_flip_work_func(struct work_struct *w) | |
11538 | { | |
11539 | struct intel_flip_work *work = | |
11540 | container_of(w, struct intel_flip_work, mmio_work); | |
11541 | struct intel_crtc *crtc = to_intel_crtc(work->crtc); | |
11542 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
11543 | struct intel_framebuffer *intel_fb = | |
11544 | to_intel_framebuffer(crtc->base.primary->fb); | |
11545 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
11546 | ||
11547 | if (work->flip_queued_req) | |
11548 | WARN_ON(__i915_wait_request(work->flip_queued_req, | |
11549 | false, NULL, | |
11550 | &dev_priv->rps.mmioflips)); | |
11551 | ||
11552 | /* For framebuffer backed by dmabuf, wait for fence */ | |
11553 | if (obj->base.dma_buf) | |
11554 | WARN_ON(reservation_object_wait_timeout_rcu(obj->base.dma_buf->resv, | |
11555 | false, false, | |
11556 | MAX_SCHEDULE_TIMEOUT) < 0); | |
11557 | ||
11558 | intel_pipe_update_start(crtc); | |
11559 | ||
11560 | if (INTEL_GEN(dev_priv) >= 9) | |
11561 | skl_do_mmio_flip(crtc, work->rotation, work); | |
11562 | else | |
11563 | /* use_mmio_flip() retricts MMIO flips to ilk+ */ | |
11564 | ilk_do_mmio_flip(crtc, work); | |
11565 | ||
11566 | intel_pipe_update_end(crtc, work); | |
11567 | } | |
11568 | ||
11569 | static int intel_default_queue_flip(struct drm_device *dev, | |
11570 | struct drm_crtc *crtc, | |
11571 | struct drm_framebuffer *fb, | |
11572 | struct drm_i915_gem_object *obj, | |
11573 | struct drm_i915_gem_request *req, | |
11574 | uint32_t flags) | |
11575 | { | |
11576 | return -ENODEV; | |
11577 | } | |
11578 | ||
11579 | static bool __pageflip_stall_check_cs(struct drm_i915_private *dev_priv, | |
11580 | struct intel_crtc *intel_crtc, | |
11581 | struct intel_flip_work *work) | |
11582 | { | |
11583 | u32 addr, vblank; | |
11584 | ||
11585 | if (!atomic_read(&work->pending)) | |
11586 | return false; | |
11587 | ||
11588 | smp_rmb(); | |
11589 | ||
11590 | vblank = intel_crtc_get_vblank_counter(intel_crtc); | |
11591 | if (work->flip_ready_vblank == 0) { | |
11592 | if (work->flip_queued_req && | |
11593 | !i915_gem_request_completed(work->flip_queued_req, true)) | |
11594 | return false; | |
11595 | ||
11596 | work->flip_ready_vblank = vblank; | |
11597 | } | |
11598 | ||
11599 | if (vblank - work->flip_ready_vblank < 3) | |
11600 | return false; | |
11601 | ||
11602 | /* Potential stall - if we see that the flip has happened, | |
11603 | * assume a missed interrupt. */ | |
11604 | if (INTEL_GEN(dev_priv) >= 4) | |
11605 | addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane))); | |
11606 | else | |
11607 | addr = I915_READ(DSPADDR(intel_crtc->plane)); | |
11608 | ||
11609 | /* There is a potential issue here with a false positive after a flip | |
11610 | * to the same address. We could address this by checking for a | |
11611 | * non-incrementing frame counter. | |
11612 | */ | |
11613 | return addr == work->gtt_offset; | |
11614 | } | |
11615 | ||
11616 | void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe) | |
11617 | { | |
11618 | struct drm_device *dev = dev_priv->dev; | |
11619 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
11620 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11621 | struct intel_flip_work *work; | |
11622 | ||
11623 | WARN_ON(!in_interrupt()); | |
11624 | ||
11625 | if (crtc == NULL) | |
11626 | return; | |
11627 | ||
11628 | spin_lock(&dev->event_lock); | |
11629 | work = intel_crtc->flip_work; | |
11630 | ||
11631 | if (work != NULL && !is_mmio_work(work) && | |
11632 | __pageflip_stall_check_cs(dev_priv, intel_crtc, work)) { | |
11633 | WARN_ONCE(1, | |
11634 | "Kicking stuck page flip: queued at %d, now %d\n", | |
11635 | work->flip_queued_vblank, intel_crtc_get_vblank_counter(intel_crtc)); | |
11636 | page_flip_completed(intel_crtc); | |
11637 | work = NULL; | |
11638 | } | |
11639 | ||
11640 | if (work != NULL && !is_mmio_work(work) && | |
11641 | intel_crtc_get_vblank_counter(intel_crtc) - work->flip_queued_vblank > 1) | |
11642 | intel_queue_rps_boost_for_request(work->flip_queued_req); | |
11643 | spin_unlock(&dev->event_lock); | |
11644 | } | |
11645 | ||
11646 | static int intel_crtc_page_flip(struct drm_crtc *crtc, | |
11647 | struct drm_framebuffer *fb, | |
11648 | struct drm_pending_vblank_event *event, | |
11649 | uint32_t page_flip_flags) | |
11650 | { | |
11651 | struct drm_device *dev = crtc->dev; | |
11652 | struct drm_i915_private *dev_priv = dev->dev_private; | |
11653 | struct drm_framebuffer *old_fb = crtc->primary->fb; | |
11654 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
11655 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11656 | struct drm_plane *primary = crtc->primary; | |
11657 | enum pipe pipe = intel_crtc->pipe; | |
11658 | struct intel_flip_work *work; | |
11659 | struct intel_engine_cs *engine; | |
11660 | bool mmio_flip; | |
11661 | struct drm_i915_gem_request *request = NULL; | |
11662 | int ret; | |
11663 | ||
11664 | /* | |
11665 | * drm_mode_page_flip_ioctl() should already catch this, but double | |
11666 | * check to be safe. In the future we may enable pageflipping from | |
11667 | * a disabled primary plane. | |
11668 | */ | |
11669 | if (WARN_ON(intel_fb_obj(old_fb) == NULL)) | |
11670 | return -EBUSY; | |
11671 | ||
11672 | /* Can't change pixel format via MI display flips. */ | |
11673 | if (fb->pixel_format != crtc->primary->fb->pixel_format) | |
11674 | return -EINVAL; | |
11675 | ||
11676 | /* | |
11677 | * TILEOFF/LINOFF registers can't be changed via MI display flips. | |
11678 | * Note that pitch changes could also affect these register. | |
11679 | */ | |
11680 | if (INTEL_INFO(dev)->gen > 3 && | |
11681 | (fb->offsets[0] != crtc->primary->fb->offsets[0] || | |
11682 | fb->pitches[0] != crtc->primary->fb->pitches[0])) | |
11683 | return -EINVAL; | |
11684 | ||
11685 | if (i915_terminally_wedged(&dev_priv->gpu_error)) | |
11686 | goto out_hang; | |
11687 | ||
11688 | work = kzalloc(sizeof(*work), GFP_KERNEL); | |
11689 | if (work == NULL) | |
11690 | return -ENOMEM; | |
11691 | ||
11692 | work->event = event; | |
11693 | work->crtc = crtc; | |
11694 | work->old_fb = old_fb; | |
11695 | INIT_WORK(&work->unpin_work, intel_unpin_work_fn); | |
11696 | ||
11697 | ret = drm_crtc_vblank_get(crtc); | |
11698 | if (ret) | |
11699 | goto free_work; | |
11700 | ||
11701 | /* We borrow the event spin lock for protecting flip_work */ | |
11702 | spin_lock_irq(&dev->event_lock); | |
11703 | if (intel_crtc->flip_work) { | |
11704 | /* Before declaring the flip queue wedged, check if | |
11705 | * the hardware completed the operation behind our backs. | |
11706 | */ | |
11707 | if (pageflip_finished(intel_crtc, intel_crtc->flip_work)) { | |
11708 | DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n"); | |
11709 | page_flip_completed(intel_crtc); | |
11710 | } else { | |
11711 | DRM_DEBUG_DRIVER("flip queue: crtc already busy\n"); | |
11712 | spin_unlock_irq(&dev->event_lock); | |
11713 | ||
11714 | drm_crtc_vblank_put(crtc); | |
11715 | kfree(work); | |
11716 | return -EBUSY; | |
11717 | } | |
11718 | } | |
11719 | intel_crtc->flip_work = work; | |
11720 | spin_unlock_irq(&dev->event_lock); | |
11721 | ||
11722 | if (atomic_read(&intel_crtc->unpin_work_count) >= 2) | |
11723 | flush_workqueue(dev_priv->wq); | |
11724 | ||
11725 | /* Reference the objects for the scheduled work. */ | |
11726 | drm_framebuffer_reference(work->old_fb); | |
11727 | drm_gem_object_reference(&obj->base); | |
11728 | ||
11729 | crtc->primary->fb = fb; | |
11730 | update_state_fb(crtc->primary); | |
11731 | ||
11732 | intel_fbc_pre_update(intel_crtc, intel_crtc->config, | |
11733 | to_intel_plane_state(primary->state)); | |
11734 | ||
11735 | work->pending_flip_obj = obj; | |
11736 | ||
11737 | ret = i915_mutex_lock_interruptible(dev); | |
11738 | if (ret) | |
11739 | goto cleanup; | |
11740 | ||
11741 | intel_crtc->reset_counter = i915_reset_counter(&dev_priv->gpu_error); | |
11742 | if (__i915_reset_in_progress_or_wedged(intel_crtc->reset_counter)) { | |
11743 | ret = -EIO; | |
11744 | goto cleanup; | |
11745 | } | |
11746 | ||
11747 | atomic_inc(&intel_crtc->unpin_work_count); | |
11748 | ||
11749 | if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) | |
11750 | work->flip_count = I915_READ(PIPE_FLIPCOUNT_G4X(pipe)) + 1; | |
11751 | ||
11752 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
11753 | engine = &dev_priv->engine[BCS]; | |
11754 | if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode) | |
11755 | /* vlv: DISPLAY_FLIP fails to change tiling */ | |
11756 | engine = NULL; | |
11757 | } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) { | |
11758 | engine = &dev_priv->engine[BCS]; | |
11759 | } else if (INTEL_INFO(dev)->gen >= 7) { | |
11760 | engine = i915_gem_request_get_engine(obj->last_write_req); | |
11761 | if (engine == NULL || engine->id != RCS) | |
11762 | engine = &dev_priv->engine[BCS]; | |
11763 | } else { | |
11764 | engine = &dev_priv->engine[RCS]; | |
11765 | } | |
11766 | ||
11767 | mmio_flip = use_mmio_flip(engine, obj); | |
11768 | ||
11769 | /* When using CS flips, we want to emit semaphores between rings. | |
11770 | * However, when using mmio flips we will create a task to do the | |
11771 | * synchronisation, so all we want here is to pin the framebuffer | |
11772 | * into the display plane and skip any waits. | |
11773 | */ | |
11774 | if (!mmio_flip) { | |
11775 | ret = i915_gem_object_sync(obj, engine, &request); | |
11776 | if (!ret && !request) { | |
11777 | request = i915_gem_request_alloc(engine, NULL); | |
11778 | ret = PTR_ERR_OR_ZERO(request); | |
11779 | } | |
11780 | ||
11781 | if (ret) | |
11782 | goto cleanup_pending; | |
11783 | } | |
11784 | ||
11785 | ret = intel_pin_and_fence_fb_obj(fb, primary->state->rotation); | |
11786 | if (ret) | |
11787 | goto cleanup_pending; | |
11788 | ||
11789 | work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary), | |
11790 | obj, 0); | |
11791 | work->gtt_offset += intel_crtc->dspaddr_offset; | |
11792 | work->rotation = crtc->primary->state->rotation; | |
11793 | ||
11794 | if (mmio_flip) { | |
11795 | INIT_WORK(&work->mmio_work, intel_mmio_flip_work_func); | |
11796 | ||
11797 | i915_gem_request_assign(&work->flip_queued_req, | |
11798 | obj->last_write_req); | |
11799 | ||
11800 | schedule_work(&work->mmio_work); | |
11801 | } else { | |
11802 | i915_gem_request_assign(&work->flip_queued_req, request); | |
11803 | ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request, | |
11804 | page_flip_flags); | |
11805 | if (ret) | |
11806 | goto cleanup_unpin; | |
11807 | ||
11808 | intel_mark_page_flip_active(intel_crtc, work); | |
11809 | ||
11810 | i915_add_request_no_flush(request); | |
11811 | } | |
11812 | ||
11813 | i915_gem_track_fb(intel_fb_obj(old_fb), obj, | |
11814 | to_intel_plane(primary)->frontbuffer_bit); | |
11815 | mutex_unlock(&dev->struct_mutex); | |
11816 | ||
11817 | intel_frontbuffer_flip_prepare(dev, | |
11818 | to_intel_plane(primary)->frontbuffer_bit); | |
11819 | ||
11820 | trace_i915_flip_request(intel_crtc->plane, obj); | |
11821 | ||
11822 | return 0; | |
11823 | ||
11824 | cleanup_unpin: | |
11825 | intel_unpin_fb_obj(fb, crtc->primary->state->rotation); | |
11826 | cleanup_pending: | |
11827 | if (!IS_ERR_OR_NULL(request)) | |
11828 | i915_add_request_no_flush(request); | |
11829 | atomic_dec(&intel_crtc->unpin_work_count); | |
11830 | mutex_unlock(&dev->struct_mutex); | |
11831 | cleanup: | |
11832 | crtc->primary->fb = old_fb; | |
11833 | update_state_fb(crtc->primary); | |
11834 | ||
11835 | drm_gem_object_unreference_unlocked(&obj->base); | |
11836 | drm_framebuffer_unreference(work->old_fb); | |
11837 | ||
11838 | spin_lock_irq(&dev->event_lock); | |
11839 | intel_crtc->flip_work = NULL; | |
11840 | spin_unlock_irq(&dev->event_lock); | |
11841 | ||
11842 | drm_crtc_vblank_put(crtc); | |
11843 | free_work: | |
11844 | kfree(work); | |
11845 | ||
11846 | if (ret == -EIO) { | |
11847 | struct drm_atomic_state *state; | |
11848 | struct drm_plane_state *plane_state; | |
11849 | ||
11850 | out_hang: | |
11851 | state = drm_atomic_state_alloc(dev); | |
11852 | if (!state) | |
11853 | return -ENOMEM; | |
11854 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
11855 | ||
11856 | retry: | |
11857 | plane_state = drm_atomic_get_plane_state(state, primary); | |
11858 | ret = PTR_ERR_OR_ZERO(plane_state); | |
11859 | if (!ret) { | |
11860 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
11861 | ||
11862 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); | |
11863 | if (!ret) | |
11864 | ret = drm_atomic_commit(state); | |
11865 | } | |
11866 | ||
11867 | if (ret == -EDEADLK) { | |
11868 | drm_modeset_backoff(state->acquire_ctx); | |
11869 | drm_atomic_state_clear(state); | |
11870 | goto retry; | |
11871 | } | |
11872 | ||
11873 | if (ret) | |
11874 | drm_atomic_state_free(state); | |
11875 | ||
11876 | if (ret == 0 && event) { | |
11877 | spin_lock_irq(&dev->event_lock); | |
11878 | drm_crtc_send_vblank_event(crtc, event); | |
11879 | spin_unlock_irq(&dev->event_lock); | |
11880 | } | |
11881 | } | |
11882 | return ret; | |
11883 | } | |
11884 | ||
11885 | ||
11886 | /** | |
11887 | * intel_wm_need_update - Check whether watermarks need updating | |
11888 | * @plane: drm plane | |
11889 | * @state: new plane state | |
11890 | * | |
11891 | * Check current plane state versus the new one to determine whether | |
11892 | * watermarks need to be recalculated. | |
11893 | * | |
11894 | * Returns true or false. | |
11895 | */ | |
11896 | static bool intel_wm_need_update(struct drm_plane *plane, | |
11897 | struct drm_plane_state *state) | |
11898 | { | |
11899 | struct intel_plane_state *new = to_intel_plane_state(state); | |
11900 | struct intel_plane_state *cur = to_intel_plane_state(plane->state); | |
11901 | ||
11902 | /* Update watermarks on tiling or size changes. */ | |
11903 | if (new->visible != cur->visible) | |
11904 | return true; | |
11905 | ||
11906 | if (!cur->base.fb || !new->base.fb) | |
11907 | return false; | |
11908 | ||
11909 | if (cur->base.fb->modifier[0] != new->base.fb->modifier[0] || | |
11910 | cur->base.rotation != new->base.rotation || | |
11911 | drm_rect_width(&new->src) != drm_rect_width(&cur->src) || | |
11912 | drm_rect_height(&new->src) != drm_rect_height(&cur->src) || | |
11913 | drm_rect_width(&new->dst) != drm_rect_width(&cur->dst) || | |
11914 | drm_rect_height(&new->dst) != drm_rect_height(&cur->dst)) | |
11915 | return true; | |
11916 | ||
11917 | return false; | |
11918 | } | |
11919 | ||
11920 | static bool needs_scaling(struct intel_plane_state *state) | |
11921 | { | |
11922 | int src_w = drm_rect_width(&state->src) >> 16; | |
11923 | int src_h = drm_rect_height(&state->src) >> 16; | |
11924 | int dst_w = drm_rect_width(&state->dst); | |
11925 | int dst_h = drm_rect_height(&state->dst); | |
11926 | ||
11927 | return (src_w != dst_w || src_h != dst_h); | |
11928 | } | |
11929 | ||
11930 | int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state, | |
11931 | struct drm_plane_state *plane_state) | |
11932 | { | |
11933 | struct intel_crtc_state *pipe_config = to_intel_crtc_state(crtc_state); | |
11934 | struct drm_crtc *crtc = crtc_state->crtc; | |
11935 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
11936 | struct drm_plane *plane = plane_state->plane; | |
11937 | struct drm_device *dev = crtc->dev; | |
11938 | struct drm_i915_private *dev_priv = to_i915(dev); | |
11939 | struct intel_plane_state *old_plane_state = | |
11940 | to_intel_plane_state(plane->state); | |
11941 | bool mode_changed = needs_modeset(crtc_state); | |
11942 | bool was_crtc_enabled = crtc->state->active; | |
11943 | bool is_crtc_enabled = crtc_state->active; | |
11944 | bool turn_off, turn_on, visible, was_visible; | |
11945 | struct drm_framebuffer *fb = plane_state->fb; | |
11946 | int ret; | |
11947 | ||
11948 | if (crtc_state && INTEL_INFO(dev)->gen >= 9 && | |
11949 | plane->type != DRM_PLANE_TYPE_CURSOR) { | |
11950 | ret = skl_update_scaler_plane( | |
11951 | to_intel_crtc_state(crtc_state), | |
11952 | to_intel_plane_state(plane_state)); | |
11953 | if (ret) | |
11954 | return ret; | |
11955 | } | |
11956 | ||
11957 | was_visible = old_plane_state->visible; | |
11958 | visible = to_intel_plane_state(plane_state)->visible; | |
11959 | ||
11960 | if (!was_crtc_enabled && WARN_ON(was_visible)) | |
11961 | was_visible = false; | |
11962 | ||
11963 | /* | |
11964 | * Visibility is calculated as if the crtc was on, but | |
11965 | * after scaler setup everything depends on it being off | |
11966 | * when the crtc isn't active. | |
11967 | * | |
11968 | * FIXME this is wrong for watermarks. Watermarks should also | |
11969 | * be computed as if the pipe would be active. Perhaps move | |
11970 | * per-plane wm computation to the .check_plane() hook, and | |
11971 | * only combine the results from all planes in the current place? | |
11972 | */ | |
11973 | if (!is_crtc_enabled) | |
11974 | to_intel_plane_state(plane_state)->visible = visible = false; | |
11975 | ||
11976 | if (!was_visible && !visible) | |
11977 | return 0; | |
11978 | ||
11979 | if (fb != old_plane_state->base.fb) | |
11980 | pipe_config->fb_changed = true; | |
11981 | ||
11982 | turn_off = was_visible && (!visible || mode_changed); | |
11983 | turn_on = visible && (!was_visible || mode_changed); | |
11984 | ||
11985 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] has [PLANE:%d:%s] with fb %i\n", | |
11986 | intel_crtc->base.base.id, | |
11987 | intel_crtc->base.name, | |
11988 | plane->base.id, plane->name, | |
11989 | fb ? fb->base.id : -1); | |
11990 | ||
11991 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n", | |
11992 | plane->base.id, plane->name, | |
11993 | was_visible, visible, | |
11994 | turn_off, turn_on, mode_changed); | |
11995 | ||
11996 | if (turn_on) { | |
11997 | pipe_config->update_wm_pre = true; | |
11998 | ||
11999 | /* must disable cxsr around plane enable/disable */ | |
12000 | if (plane->type != DRM_PLANE_TYPE_CURSOR) | |
12001 | pipe_config->disable_cxsr = true; | |
12002 | } else if (turn_off) { | |
12003 | pipe_config->update_wm_post = true; | |
12004 | ||
12005 | /* must disable cxsr around plane enable/disable */ | |
12006 | if (plane->type != DRM_PLANE_TYPE_CURSOR) | |
12007 | pipe_config->disable_cxsr = true; | |
12008 | } else if (intel_wm_need_update(plane, plane_state)) { | |
12009 | /* FIXME bollocks */ | |
12010 | pipe_config->update_wm_pre = true; | |
12011 | pipe_config->update_wm_post = true; | |
12012 | } | |
12013 | ||
12014 | /* Pre-gen9 platforms need two-step watermark updates */ | |
12015 | if ((pipe_config->update_wm_pre || pipe_config->update_wm_post) && | |
12016 | INTEL_INFO(dev)->gen < 9 && dev_priv->display.optimize_watermarks) | |
12017 | to_intel_crtc_state(crtc_state)->wm.need_postvbl_update = true; | |
12018 | ||
12019 | if (visible || was_visible) | |
12020 | pipe_config->fb_bits |= to_intel_plane(plane)->frontbuffer_bit; | |
12021 | ||
12022 | /* | |
12023 | * WaCxSRDisabledForSpriteScaling:ivb | |
12024 | * | |
12025 | * cstate->update_wm was already set above, so this flag will | |
12026 | * take effect when we commit and program watermarks. | |
12027 | */ | |
12028 | if (plane->type == DRM_PLANE_TYPE_OVERLAY && IS_IVYBRIDGE(dev) && | |
12029 | needs_scaling(to_intel_plane_state(plane_state)) && | |
12030 | !needs_scaling(old_plane_state)) | |
12031 | pipe_config->disable_lp_wm = true; | |
12032 | ||
12033 | return 0; | |
12034 | } | |
12035 | ||
12036 | static bool encoders_cloneable(const struct intel_encoder *a, | |
12037 | const struct intel_encoder *b) | |
12038 | { | |
12039 | /* masks could be asymmetric, so check both ways */ | |
12040 | return a == b || (a->cloneable & (1 << b->type) && | |
12041 | b->cloneable & (1 << a->type)); | |
12042 | } | |
12043 | ||
12044 | static bool check_single_encoder_cloning(struct drm_atomic_state *state, | |
12045 | struct intel_crtc *crtc, | |
12046 | struct intel_encoder *encoder) | |
12047 | { | |
12048 | struct intel_encoder *source_encoder; | |
12049 | struct drm_connector *connector; | |
12050 | struct drm_connector_state *connector_state; | |
12051 | int i; | |
12052 | ||
12053 | for_each_connector_in_state(state, connector, connector_state, i) { | |
12054 | if (connector_state->crtc != &crtc->base) | |
12055 | continue; | |
12056 | ||
12057 | source_encoder = | |
12058 | to_intel_encoder(connector_state->best_encoder); | |
12059 | if (!encoders_cloneable(encoder, source_encoder)) | |
12060 | return false; | |
12061 | } | |
12062 | ||
12063 | return true; | |
12064 | } | |
12065 | ||
12066 | static bool check_encoder_cloning(struct drm_atomic_state *state, | |
12067 | struct intel_crtc *crtc) | |
12068 | { | |
12069 | struct intel_encoder *encoder; | |
12070 | struct drm_connector *connector; | |
12071 | struct drm_connector_state *connector_state; | |
12072 | int i; | |
12073 | ||
12074 | for_each_connector_in_state(state, connector, connector_state, i) { | |
12075 | if (connector_state->crtc != &crtc->base) | |
12076 | continue; | |
12077 | ||
12078 | encoder = to_intel_encoder(connector_state->best_encoder); | |
12079 | if (!check_single_encoder_cloning(state, crtc, encoder)) | |
12080 | return false; | |
12081 | } | |
12082 | ||
12083 | return true; | |
12084 | } | |
12085 | ||
12086 | static int intel_crtc_atomic_check(struct drm_crtc *crtc, | |
12087 | struct drm_crtc_state *crtc_state) | |
12088 | { | |
12089 | struct drm_device *dev = crtc->dev; | |
12090 | struct drm_i915_private *dev_priv = dev->dev_private; | |
12091 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
12092 | struct intel_crtc_state *pipe_config = | |
12093 | to_intel_crtc_state(crtc_state); | |
12094 | struct drm_atomic_state *state = crtc_state->state; | |
12095 | int ret; | |
12096 | bool mode_changed = needs_modeset(crtc_state); | |
12097 | ||
12098 | if (mode_changed && !check_encoder_cloning(state, intel_crtc)) { | |
12099 | DRM_DEBUG_KMS("rejecting invalid cloning configuration\n"); | |
12100 | return -EINVAL; | |
12101 | } | |
12102 | ||
12103 | if (mode_changed && !crtc_state->active) | |
12104 | pipe_config->update_wm_post = true; | |
12105 | ||
12106 | if (mode_changed && crtc_state->enable && | |
12107 | dev_priv->display.crtc_compute_clock && | |
12108 | !WARN_ON(pipe_config->shared_dpll)) { | |
12109 | ret = dev_priv->display.crtc_compute_clock(intel_crtc, | |
12110 | pipe_config); | |
12111 | if (ret) | |
12112 | return ret; | |
12113 | } | |
12114 | ||
12115 | if (crtc_state->color_mgmt_changed) { | |
12116 | ret = intel_color_check(crtc, crtc_state); | |
12117 | if (ret) | |
12118 | return ret; | |
12119 | } | |
12120 | ||
12121 | ret = 0; | |
12122 | if (dev_priv->display.compute_pipe_wm) { | |
12123 | ret = dev_priv->display.compute_pipe_wm(pipe_config); | |
12124 | if (ret) { | |
12125 | DRM_DEBUG_KMS("Target pipe watermarks are invalid\n"); | |
12126 | return ret; | |
12127 | } | |
12128 | } | |
12129 | ||
12130 | if (dev_priv->display.compute_intermediate_wm && | |
12131 | !to_intel_atomic_state(state)->skip_intermediate_wm) { | |
12132 | if (WARN_ON(!dev_priv->display.compute_pipe_wm)) | |
12133 | return 0; | |
12134 | ||
12135 | /* | |
12136 | * Calculate 'intermediate' watermarks that satisfy both the | |
12137 | * old state and the new state. We can program these | |
12138 | * immediately. | |
12139 | */ | |
12140 | ret = dev_priv->display.compute_intermediate_wm(crtc->dev, | |
12141 | intel_crtc, | |
12142 | pipe_config); | |
12143 | if (ret) { | |
12144 | DRM_DEBUG_KMS("No valid intermediate pipe watermarks are possible\n"); | |
12145 | return ret; | |
12146 | } | |
12147 | } else if (dev_priv->display.compute_intermediate_wm) { | |
12148 | if (HAS_PCH_SPLIT(dev_priv) && INTEL_GEN(dev_priv) < 9) | |
12149 | pipe_config->wm.ilk.intermediate = pipe_config->wm.ilk.optimal; | |
12150 | } | |
12151 | ||
12152 | if (INTEL_INFO(dev)->gen >= 9) { | |
12153 | if (mode_changed) | |
12154 | ret = skl_update_scaler_crtc(pipe_config); | |
12155 | ||
12156 | if (!ret) | |
12157 | ret = intel_atomic_setup_scalers(dev, intel_crtc, | |
12158 | pipe_config); | |
12159 | } | |
12160 | ||
12161 | return ret; | |
12162 | } | |
12163 | ||
12164 | static const struct drm_crtc_helper_funcs intel_helper_funcs = { | |
12165 | .mode_set_base_atomic = intel_pipe_set_base_atomic, | |
12166 | .atomic_begin = intel_begin_crtc_commit, | |
12167 | .atomic_flush = intel_finish_crtc_commit, | |
12168 | .atomic_check = intel_crtc_atomic_check, | |
12169 | }; | |
12170 | ||
12171 | static void intel_modeset_update_connector_atomic_state(struct drm_device *dev) | |
12172 | { | |
12173 | struct intel_connector *connector; | |
12174 | ||
12175 | for_each_intel_connector(dev, connector) { | |
12176 | if (connector->base.state->crtc) | |
12177 | drm_connector_unreference(&connector->base); | |
12178 | ||
12179 | if (connector->base.encoder) { | |
12180 | connector->base.state->best_encoder = | |
12181 | connector->base.encoder; | |
12182 | connector->base.state->crtc = | |
12183 | connector->base.encoder->crtc; | |
12184 | ||
12185 | drm_connector_reference(&connector->base); | |
12186 | } else { | |
12187 | connector->base.state->best_encoder = NULL; | |
12188 | connector->base.state->crtc = NULL; | |
12189 | } | |
12190 | } | |
12191 | } | |
12192 | ||
12193 | static void | |
12194 | connected_sink_compute_bpp(struct intel_connector *connector, | |
12195 | struct intel_crtc_state *pipe_config) | |
12196 | { | |
12197 | int bpp = pipe_config->pipe_bpp; | |
12198 | ||
12199 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n", | |
12200 | connector->base.base.id, | |
12201 | connector->base.name); | |
12202 | ||
12203 | /* Don't use an invalid EDID bpc value */ | |
12204 | if (connector->base.display_info.bpc && | |
12205 | connector->base.display_info.bpc * 3 < bpp) { | |
12206 | DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n", | |
12207 | bpp, connector->base.display_info.bpc*3); | |
12208 | pipe_config->pipe_bpp = connector->base.display_info.bpc*3; | |
12209 | } | |
12210 | ||
12211 | /* Clamp bpp to default limit on screens without EDID 1.4 */ | |
12212 | if (connector->base.display_info.bpc == 0) { | |
12213 | int type = connector->base.connector_type; | |
12214 | int clamp_bpp = 24; | |
12215 | ||
12216 | /* Fall back to 18 bpp when DP sink capability is unknown. */ | |
12217 | if (type == DRM_MODE_CONNECTOR_DisplayPort || | |
12218 | type == DRM_MODE_CONNECTOR_eDP) | |
12219 | clamp_bpp = 18; | |
12220 | ||
12221 | if (bpp > clamp_bpp) { | |
12222 | DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of %d\n", | |
12223 | bpp, clamp_bpp); | |
12224 | pipe_config->pipe_bpp = clamp_bpp; | |
12225 | } | |
12226 | } | |
12227 | } | |
12228 | ||
12229 | static int | |
12230 | compute_baseline_pipe_bpp(struct intel_crtc *crtc, | |
12231 | struct intel_crtc_state *pipe_config) | |
12232 | { | |
12233 | struct drm_device *dev = crtc->base.dev; | |
12234 | struct drm_atomic_state *state; | |
12235 | struct drm_connector *connector; | |
12236 | struct drm_connector_state *connector_state; | |
12237 | int bpp, i; | |
12238 | ||
12239 | if ((IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))) | |
12240 | bpp = 10*3; | |
12241 | else if (INTEL_INFO(dev)->gen >= 5) | |
12242 | bpp = 12*3; | |
12243 | else | |
12244 | bpp = 8*3; | |
12245 | ||
12246 | ||
12247 | pipe_config->pipe_bpp = bpp; | |
12248 | ||
12249 | state = pipe_config->base.state; | |
12250 | ||
12251 | /* Clamp display bpp to EDID value */ | |
12252 | for_each_connector_in_state(state, connector, connector_state, i) { | |
12253 | if (connector_state->crtc != &crtc->base) | |
12254 | continue; | |
12255 | ||
12256 | connected_sink_compute_bpp(to_intel_connector(connector), | |
12257 | pipe_config); | |
12258 | } | |
12259 | ||
12260 | return bpp; | |
12261 | } | |
12262 | ||
12263 | static void intel_dump_crtc_timings(const struct drm_display_mode *mode) | |
12264 | { | |
12265 | DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, " | |
12266 | "type: 0x%x flags: 0x%x\n", | |
12267 | mode->crtc_clock, | |
12268 | mode->crtc_hdisplay, mode->crtc_hsync_start, | |
12269 | mode->crtc_hsync_end, mode->crtc_htotal, | |
12270 | mode->crtc_vdisplay, mode->crtc_vsync_start, | |
12271 | mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags); | |
12272 | } | |
12273 | ||
12274 | static void intel_dump_pipe_config(struct intel_crtc *crtc, | |
12275 | struct intel_crtc_state *pipe_config, | |
12276 | const char *context) | |
12277 | { | |
12278 | struct drm_device *dev = crtc->base.dev; | |
12279 | struct drm_plane *plane; | |
12280 | struct intel_plane *intel_plane; | |
12281 | struct intel_plane_state *state; | |
12282 | struct drm_framebuffer *fb; | |
12283 | ||
12284 | DRM_DEBUG_KMS("[CRTC:%d:%s]%s config %p for pipe %c\n", | |
12285 | crtc->base.base.id, crtc->base.name, | |
12286 | context, pipe_config, pipe_name(crtc->pipe)); | |
12287 | ||
12288 | DRM_DEBUG_KMS("cpu_transcoder: %s\n", transcoder_name(pipe_config->cpu_transcoder)); | |
12289 | DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n", | |
12290 | pipe_config->pipe_bpp, pipe_config->dither); | |
12291 | DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n", | |
12292 | pipe_config->has_pch_encoder, | |
12293 | pipe_config->fdi_lanes, | |
12294 | pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n, | |
12295 | pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n, | |
12296 | pipe_config->fdi_m_n.tu); | |
12297 | DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n", | |
12298 | pipe_config->has_dp_encoder, | |
12299 | pipe_config->lane_count, | |
12300 | pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n, | |
12301 | pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n, | |
12302 | pipe_config->dp_m_n.tu); | |
12303 | ||
12304 | DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n", | |
12305 | pipe_config->has_dp_encoder, | |
12306 | pipe_config->lane_count, | |
12307 | pipe_config->dp_m2_n2.gmch_m, | |
12308 | pipe_config->dp_m2_n2.gmch_n, | |
12309 | pipe_config->dp_m2_n2.link_m, | |
12310 | pipe_config->dp_m2_n2.link_n, | |
12311 | pipe_config->dp_m2_n2.tu); | |
12312 | ||
12313 | DRM_DEBUG_KMS("audio: %i, infoframes: %i\n", | |
12314 | pipe_config->has_audio, | |
12315 | pipe_config->has_infoframe); | |
12316 | ||
12317 | DRM_DEBUG_KMS("requested mode:\n"); | |
12318 | drm_mode_debug_printmodeline(&pipe_config->base.mode); | |
12319 | DRM_DEBUG_KMS("adjusted mode:\n"); | |
12320 | drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode); | |
12321 | intel_dump_crtc_timings(&pipe_config->base.adjusted_mode); | |
12322 | DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock); | |
12323 | DRM_DEBUG_KMS("pipe src size: %dx%d\n", | |
12324 | pipe_config->pipe_src_w, pipe_config->pipe_src_h); | |
12325 | DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n", | |
12326 | crtc->num_scalers, | |
12327 | pipe_config->scaler_state.scaler_users, | |
12328 | pipe_config->scaler_state.scaler_id); | |
12329 | DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n", | |
12330 | pipe_config->gmch_pfit.control, | |
12331 | pipe_config->gmch_pfit.pgm_ratios, | |
12332 | pipe_config->gmch_pfit.lvds_border_bits); | |
12333 | DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n", | |
12334 | pipe_config->pch_pfit.pos, | |
12335 | pipe_config->pch_pfit.size, | |
12336 | pipe_config->pch_pfit.enabled ? "enabled" : "disabled"); | |
12337 | DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled); | |
12338 | DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide); | |
12339 | ||
12340 | if (IS_BROXTON(dev)) { | |
12341 | DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x," | |
12342 | "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, " | |
12343 | "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n", | |
12344 | pipe_config->ddi_pll_sel, | |
12345 | pipe_config->dpll_hw_state.ebb0, | |
12346 | pipe_config->dpll_hw_state.ebb4, | |
12347 | pipe_config->dpll_hw_state.pll0, | |
12348 | pipe_config->dpll_hw_state.pll1, | |
12349 | pipe_config->dpll_hw_state.pll2, | |
12350 | pipe_config->dpll_hw_state.pll3, | |
12351 | pipe_config->dpll_hw_state.pll6, | |
12352 | pipe_config->dpll_hw_state.pll8, | |
12353 | pipe_config->dpll_hw_state.pll9, | |
12354 | pipe_config->dpll_hw_state.pll10, | |
12355 | pipe_config->dpll_hw_state.pcsdw12); | |
12356 | } else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { | |
12357 | DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: " | |
12358 | "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n", | |
12359 | pipe_config->ddi_pll_sel, | |
12360 | pipe_config->dpll_hw_state.ctrl1, | |
12361 | pipe_config->dpll_hw_state.cfgcr1, | |
12362 | pipe_config->dpll_hw_state.cfgcr2); | |
12363 | } else if (HAS_DDI(dev)) { | |
12364 | DRM_DEBUG_KMS("ddi_pll_sel: 0x%x; dpll_hw_state: wrpll: 0x%x spll: 0x%x\n", | |
12365 | pipe_config->ddi_pll_sel, | |
12366 | pipe_config->dpll_hw_state.wrpll, | |
12367 | pipe_config->dpll_hw_state.spll); | |
12368 | } else { | |
12369 | DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, " | |
12370 | "fp0: 0x%x, fp1: 0x%x\n", | |
12371 | pipe_config->dpll_hw_state.dpll, | |
12372 | pipe_config->dpll_hw_state.dpll_md, | |
12373 | pipe_config->dpll_hw_state.fp0, | |
12374 | pipe_config->dpll_hw_state.fp1); | |
12375 | } | |
12376 | ||
12377 | DRM_DEBUG_KMS("planes on this crtc\n"); | |
12378 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { | |
12379 | intel_plane = to_intel_plane(plane); | |
12380 | if (intel_plane->pipe != crtc->pipe) | |
12381 | continue; | |
12382 | ||
12383 | state = to_intel_plane_state(plane->state); | |
12384 | fb = state->base.fb; | |
12385 | if (!fb) { | |
12386 | DRM_DEBUG_KMS("[PLANE:%d:%s] disabled, scaler_id = %d\n", | |
12387 | plane->base.id, plane->name, state->scaler_id); | |
12388 | continue; | |
12389 | } | |
12390 | ||
12391 | DRM_DEBUG_KMS("[PLANE:%d:%s] enabled", | |
12392 | plane->base.id, plane->name); | |
12393 | DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = %s", | |
12394 | fb->base.id, fb->width, fb->height, | |
12395 | drm_get_format_name(fb->pixel_format)); | |
12396 | DRM_DEBUG_KMS("\tscaler:%d src %dx%d+%d+%d dst %dx%d+%d+%d\n", | |
12397 | state->scaler_id, | |
12398 | state->src.x1 >> 16, state->src.y1 >> 16, | |
12399 | drm_rect_width(&state->src) >> 16, | |
12400 | drm_rect_height(&state->src) >> 16, | |
12401 | state->dst.x1, state->dst.y1, | |
12402 | drm_rect_width(&state->dst), | |
12403 | drm_rect_height(&state->dst)); | |
12404 | } | |
12405 | } | |
12406 | ||
12407 | static bool check_digital_port_conflicts(struct drm_atomic_state *state) | |
12408 | { | |
12409 | struct drm_device *dev = state->dev; | |
12410 | struct drm_connector *connector; | |
12411 | unsigned int used_ports = 0; | |
12412 | ||
12413 | /* | |
12414 | * Walk the connector list instead of the encoder | |
12415 | * list to detect the problem on ddi platforms | |
12416 | * where there's just one encoder per digital port. | |
12417 | */ | |
12418 | drm_for_each_connector(connector, dev) { | |
12419 | struct drm_connector_state *connector_state; | |
12420 | struct intel_encoder *encoder; | |
12421 | ||
12422 | connector_state = drm_atomic_get_existing_connector_state(state, connector); | |
12423 | if (!connector_state) | |
12424 | connector_state = connector->state; | |
12425 | ||
12426 | if (!connector_state->best_encoder) | |
12427 | continue; | |
12428 | ||
12429 | encoder = to_intel_encoder(connector_state->best_encoder); | |
12430 | ||
12431 | WARN_ON(!connector_state->crtc); | |
12432 | ||
12433 | switch (encoder->type) { | |
12434 | unsigned int port_mask; | |
12435 | case INTEL_OUTPUT_UNKNOWN: | |
12436 | if (WARN_ON(!HAS_DDI(dev))) | |
12437 | break; | |
12438 | case INTEL_OUTPUT_DISPLAYPORT: | |
12439 | case INTEL_OUTPUT_HDMI: | |
12440 | case INTEL_OUTPUT_EDP: | |
12441 | port_mask = 1 << enc_to_dig_port(&encoder->base)->port; | |
12442 | ||
12443 | /* the same port mustn't appear more than once */ | |
12444 | if (used_ports & port_mask) | |
12445 | return false; | |
12446 | ||
12447 | used_ports |= port_mask; | |
12448 | default: | |
12449 | break; | |
12450 | } | |
12451 | } | |
12452 | ||
12453 | return true; | |
12454 | } | |
12455 | ||
12456 | static void | |
12457 | clear_intel_crtc_state(struct intel_crtc_state *crtc_state) | |
12458 | { | |
12459 | struct drm_crtc_state tmp_state; | |
12460 | struct intel_crtc_scaler_state scaler_state; | |
12461 | struct intel_dpll_hw_state dpll_hw_state; | |
12462 | struct intel_shared_dpll *shared_dpll; | |
12463 | uint32_t ddi_pll_sel; | |
12464 | bool force_thru; | |
12465 | ||
12466 | /* FIXME: before the switch to atomic started, a new pipe_config was | |
12467 | * kzalloc'd. Code that depends on any field being zero should be | |
12468 | * fixed, so that the crtc_state can be safely duplicated. For now, | |
12469 | * only fields that are know to not cause problems are preserved. */ | |
12470 | ||
12471 | tmp_state = crtc_state->base; | |
12472 | scaler_state = crtc_state->scaler_state; | |
12473 | shared_dpll = crtc_state->shared_dpll; | |
12474 | dpll_hw_state = crtc_state->dpll_hw_state; | |
12475 | ddi_pll_sel = crtc_state->ddi_pll_sel; | |
12476 | force_thru = crtc_state->pch_pfit.force_thru; | |
12477 | ||
12478 | memset(crtc_state, 0, sizeof *crtc_state); | |
12479 | ||
12480 | crtc_state->base = tmp_state; | |
12481 | crtc_state->scaler_state = scaler_state; | |
12482 | crtc_state->shared_dpll = shared_dpll; | |
12483 | crtc_state->dpll_hw_state = dpll_hw_state; | |
12484 | crtc_state->ddi_pll_sel = ddi_pll_sel; | |
12485 | crtc_state->pch_pfit.force_thru = force_thru; | |
12486 | } | |
12487 | ||
12488 | static int | |
12489 | intel_modeset_pipe_config(struct drm_crtc *crtc, | |
12490 | struct intel_crtc_state *pipe_config) | |
12491 | { | |
12492 | struct drm_atomic_state *state = pipe_config->base.state; | |
12493 | struct intel_encoder *encoder; | |
12494 | struct drm_connector *connector; | |
12495 | struct drm_connector_state *connector_state; | |
12496 | int base_bpp, ret = -EINVAL; | |
12497 | int i; | |
12498 | bool retry = true; | |
12499 | ||
12500 | clear_intel_crtc_state(pipe_config); | |
12501 | ||
12502 | pipe_config->cpu_transcoder = | |
12503 | (enum transcoder) to_intel_crtc(crtc)->pipe; | |
12504 | ||
12505 | /* | |
12506 | * Sanitize sync polarity flags based on requested ones. If neither | |
12507 | * positive or negative polarity is requested, treat this as meaning | |
12508 | * negative polarity. | |
12509 | */ | |
12510 | if (!(pipe_config->base.adjusted_mode.flags & | |
12511 | (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC))) | |
12512 | pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC; | |
12513 | ||
12514 | if (!(pipe_config->base.adjusted_mode.flags & | |
12515 | (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC))) | |
12516 | pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC; | |
12517 | ||
12518 | base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc), | |
12519 | pipe_config); | |
12520 | if (base_bpp < 0) | |
12521 | goto fail; | |
12522 | ||
12523 | /* | |
12524 | * Determine the real pipe dimensions. Note that stereo modes can | |
12525 | * increase the actual pipe size due to the frame doubling and | |
12526 | * insertion of additional space for blanks between the frame. This | |
12527 | * is stored in the crtc timings. We use the requested mode to do this | |
12528 | * computation to clearly distinguish it from the adjusted mode, which | |
12529 | * can be changed by the connectors in the below retry loop. | |
12530 | */ | |
12531 | drm_crtc_get_hv_timing(&pipe_config->base.mode, | |
12532 | &pipe_config->pipe_src_w, | |
12533 | &pipe_config->pipe_src_h); | |
12534 | ||
12535 | encoder_retry: | |
12536 | /* Ensure the port clock defaults are reset when retrying. */ | |
12537 | pipe_config->port_clock = 0; | |
12538 | pipe_config->pixel_multiplier = 1; | |
12539 | ||
12540 | /* Fill in default crtc timings, allow encoders to overwrite them. */ | |
12541 | drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode, | |
12542 | CRTC_STEREO_DOUBLE); | |
12543 | ||
12544 | /* Pass our mode to the connectors and the CRTC to give them a chance to | |
12545 | * adjust it according to limitations or connector properties, and also | |
12546 | * a chance to reject the mode entirely. | |
12547 | */ | |
12548 | for_each_connector_in_state(state, connector, connector_state, i) { | |
12549 | if (connector_state->crtc != crtc) | |
12550 | continue; | |
12551 | ||
12552 | encoder = to_intel_encoder(connector_state->best_encoder); | |
12553 | ||
12554 | if (!(encoder->compute_config(encoder, pipe_config))) { | |
12555 | DRM_DEBUG_KMS("Encoder config failure\n"); | |
12556 | goto fail; | |
12557 | } | |
12558 | } | |
12559 | ||
12560 | /* Set default port clock if not overwritten by the encoder. Needs to be | |
12561 | * done afterwards in case the encoder adjusts the mode. */ | |
12562 | if (!pipe_config->port_clock) | |
12563 | pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock | |
12564 | * pipe_config->pixel_multiplier; | |
12565 | ||
12566 | ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config); | |
12567 | if (ret < 0) { | |
12568 | DRM_DEBUG_KMS("CRTC fixup failed\n"); | |
12569 | goto fail; | |
12570 | } | |
12571 | ||
12572 | if (ret == RETRY) { | |
12573 | if (WARN(!retry, "loop in pipe configuration computation\n")) { | |
12574 | ret = -EINVAL; | |
12575 | goto fail; | |
12576 | } | |
12577 | ||
12578 | DRM_DEBUG_KMS("CRTC bw constrained, retrying\n"); | |
12579 | retry = false; | |
12580 | goto encoder_retry; | |
12581 | } | |
12582 | ||
12583 | /* Dithering seems to not pass-through bits correctly when it should, so | |
12584 | * only enable it on 6bpc panels. */ | |
12585 | pipe_config->dither = pipe_config->pipe_bpp == 6*3; | |
12586 | DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n", | |
12587 | base_bpp, pipe_config->pipe_bpp, pipe_config->dither); | |
12588 | ||
12589 | fail: | |
12590 | return ret; | |
12591 | } | |
12592 | ||
12593 | static void | |
12594 | intel_modeset_update_crtc_state(struct drm_atomic_state *state) | |
12595 | { | |
12596 | struct drm_crtc *crtc; | |
12597 | struct drm_crtc_state *crtc_state; | |
12598 | int i; | |
12599 | ||
12600 | /* Double check state. */ | |
12601 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
12602 | to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state); | |
12603 | ||
12604 | /* Update hwmode for vblank functions */ | |
12605 | if (crtc->state->active) | |
12606 | crtc->hwmode = crtc->state->adjusted_mode; | |
12607 | else | |
12608 | crtc->hwmode.crtc_clock = 0; | |
12609 | ||
12610 | /* | |
12611 | * Update legacy state to satisfy fbc code. This can | |
12612 | * be removed when fbc uses the atomic state. | |
12613 | */ | |
12614 | if (drm_atomic_get_existing_plane_state(state, crtc->primary)) { | |
12615 | struct drm_plane_state *plane_state = crtc->primary->state; | |
12616 | ||
12617 | crtc->primary->fb = plane_state->fb; | |
12618 | crtc->x = plane_state->src_x >> 16; | |
12619 | crtc->y = plane_state->src_y >> 16; | |
12620 | } | |
12621 | } | |
12622 | } | |
12623 | ||
12624 | static bool intel_fuzzy_clock_check(int clock1, int clock2) | |
12625 | { | |
12626 | int diff; | |
12627 | ||
12628 | if (clock1 == clock2) | |
12629 | return true; | |
12630 | ||
12631 | if (!clock1 || !clock2) | |
12632 | return false; | |
12633 | ||
12634 | diff = abs(clock1 - clock2); | |
12635 | ||
12636 | if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105) | |
12637 | return true; | |
12638 | ||
12639 | return false; | |
12640 | } | |
12641 | ||
12642 | #define for_each_intel_crtc_masked(dev, mask, intel_crtc) \ | |
12643 | list_for_each_entry((intel_crtc), \ | |
12644 | &(dev)->mode_config.crtc_list, \ | |
12645 | base.head) \ | |
12646 | for_each_if (mask & (1 <<(intel_crtc)->pipe)) | |
12647 | ||
12648 | static bool | |
12649 | intel_compare_m_n(unsigned int m, unsigned int n, | |
12650 | unsigned int m2, unsigned int n2, | |
12651 | bool exact) | |
12652 | { | |
12653 | if (m == m2 && n == n2) | |
12654 | return true; | |
12655 | ||
12656 | if (exact || !m || !n || !m2 || !n2) | |
12657 | return false; | |
12658 | ||
12659 | BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX); | |
12660 | ||
12661 | if (n > n2) { | |
12662 | while (n > n2) { | |
12663 | m2 <<= 1; | |
12664 | n2 <<= 1; | |
12665 | } | |
12666 | } else if (n < n2) { | |
12667 | while (n < n2) { | |
12668 | m <<= 1; | |
12669 | n <<= 1; | |
12670 | } | |
12671 | } | |
12672 | ||
12673 | if (n != n2) | |
12674 | return false; | |
12675 | ||
12676 | return intel_fuzzy_clock_check(m, m2); | |
12677 | } | |
12678 | ||
12679 | static bool | |
12680 | intel_compare_link_m_n(const struct intel_link_m_n *m_n, | |
12681 | struct intel_link_m_n *m2_n2, | |
12682 | bool adjust) | |
12683 | { | |
12684 | if (m_n->tu == m2_n2->tu && | |
12685 | intel_compare_m_n(m_n->gmch_m, m_n->gmch_n, | |
12686 | m2_n2->gmch_m, m2_n2->gmch_n, !adjust) && | |
12687 | intel_compare_m_n(m_n->link_m, m_n->link_n, | |
12688 | m2_n2->link_m, m2_n2->link_n, !adjust)) { | |
12689 | if (adjust) | |
12690 | *m2_n2 = *m_n; | |
12691 | ||
12692 | return true; | |
12693 | } | |
12694 | ||
12695 | return false; | |
12696 | } | |
12697 | ||
12698 | static bool | |
12699 | intel_pipe_config_compare(struct drm_device *dev, | |
12700 | struct intel_crtc_state *current_config, | |
12701 | struct intel_crtc_state *pipe_config, | |
12702 | bool adjust) | |
12703 | { | |
12704 | bool ret = true; | |
12705 | ||
12706 | #define INTEL_ERR_OR_DBG_KMS(fmt, ...) \ | |
12707 | do { \ | |
12708 | if (!adjust) \ | |
12709 | DRM_ERROR(fmt, ##__VA_ARGS__); \ | |
12710 | else \ | |
12711 | DRM_DEBUG_KMS(fmt, ##__VA_ARGS__); \ | |
12712 | } while (0) | |
12713 | ||
12714 | #define PIPE_CONF_CHECK_X(name) \ | |
12715 | if (current_config->name != pipe_config->name) { \ | |
12716 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \ | |
12717 | "(expected 0x%08x, found 0x%08x)\n", \ | |
12718 | current_config->name, \ | |
12719 | pipe_config->name); \ | |
12720 | ret = false; \ | |
12721 | } | |
12722 | ||
12723 | #define PIPE_CONF_CHECK_I(name) \ | |
12724 | if (current_config->name != pipe_config->name) { \ | |
12725 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \ | |
12726 | "(expected %i, found %i)\n", \ | |
12727 | current_config->name, \ | |
12728 | pipe_config->name); \ | |
12729 | ret = false; \ | |
12730 | } | |
12731 | ||
12732 | #define PIPE_CONF_CHECK_P(name) \ | |
12733 | if (current_config->name != pipe_config->name) { \ | |
12734 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \ | |
12735 | "(expected %p, found %p)\n", \ | |
12736 | current_config->name, \ | |
12737 | pipe_config->name); \ | |
12738 | ret = false; \ | |
12739 | } | |
12740 | ||
12741 | #define PIPE_CONF_CHECK_M_N(name) \ | |
12742 | if (!intel_compare_link_m_n(¤t_config->name, \ | |
12743 | &pipe_config->name,\ | |
12744 | adjust)) { \ | |
12745 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \ | |
12746 | "(expected tu %i gmch %i/%i link %i/%i, " \ | |
12747 | "found tu %i, gmch %i/%i link %i/%i)\n", \ | |
12748 | current_config->name.tu, \ | |
12749 | current_config->name.gmch_m, \ | |
12750 | current_config->name.gmch_n, \ | |
12751 | current_config->name.link_m, \ | |
12752 | current_config->name.link_n, \ | |
12753 | pipe_config->name.tu, \ | |
12754 | pipe_config->name.gmch_m, \ | |
12755 | pipe_config->name.gmch_n, \ | |
12756 | pipe_config->name.link_m, \ | |
12757 | pipe_config->name.link_n); \ | |
12758 | ret = false; \ | |
12759 | } | |
12760 | ||
12761 | /* This is required for BDW+ where there is only one set of registers for | |
12762 | * switching between high and low RR. | |
12763 | * This macro can be used whenever a comparison has to be made between one | |
12764 | * hw state and multiple sw state variables. | |
12765 | */ | |
12766 | #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) \ | |
12767 | if (!intel_compare_link_m_n(¤t_config->name, \ | |
12768 | &pipe_config->name, adjust) && \ | |
12769 | !intel_compare_link_m_n(¤t_config->alt_name, \ | |
12770 | &pipe_config->name, adjust)) { \ | |
12771 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \ | |
12772 | "(expected tu %i gmch %i/%i link %i/%i, " \ | |
12773 | "or tu %i gmch %i/%i link %i/%i, " \ | |
12774 | "found tu %i, gmch %i/%i link %i/%i)\n", \ | |
12775 | current_config->name.tu, \ | |
12776 | current_config->name.gmch_m, \ | |
12777 | current_config->name.gmch_n, \ | |
12778 | current_config->name.link_m, \ | |
12779 | current_config->name.link_n, \ | |
12780 | current_config->alt_name.tu, \ | |
12781 | current_config->alt_name.gmch_m, \ | |
12782 | current_config->alt_name.gmch_n, \ | |
12783 | current_config->alt_name.link_m, \ | |
12784 | current_config->alt_name.link_n, \ | |
12785 | pipe_config->name.tu, \ | |
12786 | pipe_config->name.gmch_m, \ | |
12787 | pipe_config->name.gmch_n, \ | |
12788 | pipe_config->name.link_m, \ | |
12789 | pipe_config->name.link_n); \ | |
12790 | ret = false; \ | |
12791 | } | |
12792 | ||
12793 | #define PIPE_CONF_CHECK_FLAGS(name, mask) \ | |
12794 | if ((current_config->name ^ pipe_config->name) & (mask)) { \ | |
12795 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name "(" #mask ") " \ | |
12796 | "(expected %i, found %i)\n", \ | |
12797 | current_config->name & (mask), \ | |
12798 | pipe_config->name & (mask)); \ | |
12799 | ret = false; \ | |
12800 | } | |
12801 | ||
12802 | #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \ | |
12803 | if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \ | |
12804 | INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \ | |
12805 | "(expected %i, found %i)\n", \ | |
12806 | current_config->name, \ | |
12807 | pipe_config->name); \ | |
12808 | ret = false; \ | |
12809 | } | |
12810 | ||
12811 | #define PIPE_CONF_QUIRK(quirk) \ | |
12812 | ((current_config->quirks | pipe_config->quirks) & (quirk)) | |
12813 | ||
12814 | PIPE_CONF_CHECK_I(cpu_transcoder); | |
12815 | ||
12816 | PIPE_CONF_CHECK_I(has_pch_encoder); | |
12817 | PIPE_CONF_CHECK_I(fdi_lanes); | |
12818 | PIPE_CONF_CHECK_M_N(fdi_m_n); | |
12819 | ||
12820 | PIPE_CONF_CHECK_I(has_dp_encoder); | |
12821 | PIPE_CONF_CHECK_I(lane_count); | |
12822 | PIPE_CONF_CHECK_X(lane_lat_optim_mask); | |
12823 | ||
12824 | if (INTEL_INFO(dev)->gen < 8) { | |
12825 | PIPE_CONF_CHECK_M_N(dp_m_n); | |
12826 | ||
12827 | if (current_config->has_drrs) | |
12828 | PIPE_CONF_CHECK_M_N(dp_m2_n2); | |
12829 | } else | |
12830 | PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2); | |
12831 | ||
12832 | PIPE_CONF_CHECK_I(has_dsi_encoder); | |
12833 | ||
12834 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay); | |
12835 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal); | |
12836 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start); | |
12837 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end); | |
12838 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start); | |
12839 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end); | |
12840 | ||
12841 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay); | |
12842 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal); | |
12843 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start); | |
12844 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end); | |
12845 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start); | |
12846 | PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end); | |
12847 | ||
12848 | PIPE_CONF_CHECK_I(pixel_multiplier); | |
12849 | PIPE_CONF_CHECK_I(has_hdmi_sink); | |
12850 | if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) || | |
12851 | IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) | |
12852 | PIPE_CONF_CHECK_I(limited_color_range); | |
12853 | PIPE_CONF_CHECK_I(has_infoframe); | |
12854 | ||
12855 | PIPE_CONF_CHECK_I(has_audio); | |
12856 | ||
12857 | PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags, | |
12858 | DRM_MODE_FLAG_INTERLACE); | |
12859 | ||
12860 | if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) { | |
12861 | PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags, | |
12862 | DRM_MODE_FLAG_PHSYNC); | |
12863 | PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags, | |
12864 | DRM_MODE_FLAG_NHSYNC); | |
12865 | PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags, | |
12866 | DRM_MODE_FLAG_PVSYNC); | |
12867 | PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags, | |
12868 | DRM_MODE_FLAG_NVSYNC); | |
12869 | } | |
12870 | ||
12871 | PIPE_CONF_CHECK_X(gmch_pfit.control); | |
12872 | /* pfit ratios are autocomputed by the hw on gen4+ */ | |
12873 | if (INTEL_INFO(dev)->gen < 4) | |
12874 | PIPE_CONF_CHECK_X(gmch_pfit.pgm_ratios); | |
12875 | PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits); | |
12876 | ||
12877 | if (!adjust) { | |
12878 | PIPE_CONF_CHECK_I(pipe_src_w); | |
12879 | PIPE_CONF_CHECK_I(pipe_src_h); | |
12880 | ||
12881 | PIPE_CONF_CHECK_I(pch_pfit.enabled); | |
12882 | if (current_config->pch_pfit.enabled) { | |
12883 | PIPE_CONF_CHECK_X(pch_pfit.pos); | |
12884 | PIPE_CONF_CHECK_X(pch_pfit.size); | |
12885 | } | |
12886 | ||
12887 | PIPE_CONF_CHECK_I(scaler_state.scaler_id); | |
12888 | } | |
12889 | ||
12890 | /* BDW+ don't expose a synchronous way to read the state */ | |
12891 | if (IS_HASWELL(dev)) | |
12892 | PIPE_CONF_CHECK_I(ips_enabled); | |
12893 | ||
12894 | PIPE_CONF_CHECK_I(double_wide); | |
12895 | ||
12896 | PIPE_CONF_CHECK_X(ddi_pll_sel); | |
12897 | ||
12898 | PIPE_CONF_CHECK_P(shared_dpll); | |
12899 | PIPE_CONF_CHECK_X(dpll_hw_state.dpll); | |
12900 | PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md); | |
12901 | PIPE_CONF_CHECK_X(dpll_hw_state.fp0); | |
12902 | PIPE_CONF_CHECK_X(dpll_hw_state.fp1); | |
12903 | PIPE_CONF_CHECK_X(dpll_hw_state.wrpll); | |
12904 | PIPE_CONF_CHECK_X(dpll_hw_state.spll); | |
12905 | PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1); | |
12906 | PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1); | |
12907 | PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2); | |
12908 | ||
12909 | PIPE_CONF_CHECK_X(dsi_pll.ctrl); | |
12910 | PIPE_CONF_CHECK_X(dsi_pll.div); | |
12911 | ||
12912 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) | |
12913 | PIPE_CONF_CHECK_I(pipe_bpp); | |
12914 | ||
12915 | PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock); | |
12916 | PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock); | |
12917 | ||
12918 | #undef PIPE_CONF_CHECK_X | |
12919 | #undef PIPE_CONF_CHECK_I | |
12920 | #undef PIPE_CONF_CHECK_P | |
12921 | #undef PIPE_CONF_CHECK_FLAGS | |
12922 | #undef PIPE_CONF_CHECK_CLOCK_FUZZY | |
12923 | #undef PIPE_CONF_QUIRK | |
12924 | #undef INTEL_ERR_OR_DBG_KMS | |
12925 | ||
12926 | return ret; | |
12927 | } | |
12928 | ||
12929 | static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv, | |
12930 | const struct intel_crtc_state *pipe_config) | |
12931 | { | |
12932 | if (pipe_config->has_pch_encoder) { | |
12933 | int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config), | |
12934 | &pipe_config->fdi_m_n); | |
12935 | int dotclock = pipe_config->base.adjusted_mode.crtc_clock; | |
12936 | ||
12937 | /* | |
12938 | * FDI already provided one idea for the dotclock. | |
12939 | * Yell if the encoder disagrees. | |
12940 | */ | |
12941 | WARN(!intel_fuzzy_clock_check(fdi_dotclock, dotclock), | |
12942 | "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n", | |
12943 | fdi_dotclock, dotclock); | |
12944 | } | |
12945 | } | |
12946 | ||
12947 | static void verify_wm_state(struct drm_crtc *crtc, | |
12948 | struct drm_crtc_state *new_state) | |
12949 | { | |
12950 | struct drm_device *dev = crtc->dev; | |
12951 | struct drm_i915_private *dev_priv = dev->dev_private; | |
12952 | struct skl_ddb_allocation hw_ddb, *sw_ddb; | |
12953 | struct skl_ddb_entry *hw_entry, *sw_entry; | |
12954 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
12955 | const enum pipe pipe = intel_crtc->pipe; | |
12956 | int plane; | |
12957 | ||
12958 | if (INTEL_INFO(dev)->gen < 9 || !new_state->active) | |
12959 | return; | |
12960 | ||
12961 | skl_ddb_get_hw_state(dev_priv, &hw_ddb); | |
12962 | sw_ddb = &dev_priv->wm.skl_hw.ddb; | |
12963 | ||
12964 | /* planes */ | |
12965 | for_each_plane(dev_priv, pipe, plane) { | |
12966 | hw_entry = &hw_ddb.plane[pipe][plane]; | |
12967 | sw_entry = &sw_ddb->plane[pipe][plane]; | |
12968 | ||
12969 | if (skl_ddb_entry_equal(hw_entry, sw_entry)) | |
12970 | continue; | |
12971 | ||
12972 | DRM_ERROR("mismatch in DDB state pipe %c plane %d " | |
12973 | "(expected (%u,%u), found (%u,%u))\n", | |
12974 | pipe_name(pipe), plane + 1, | |
12975 | sw_entry->start, sw_entry->end, | |
12976 | hw_entry->start, hw_entry->end); | |
12977 | } | |
12978 | ||
12979 | /* cursor */ | |
12980 | hw_entry = &hw_ddb.plane[pipe][PLANE_CURSOR]; | |
12981 | sw_entry = &sw_ddb->plane[pipe][PLANE_CURSOR]; | |
12982 | ||
12983 | if (!skl_ddb_entry_equal(hw_entry, sw_entry)) { | |
12984 | DRM_ERROR("mismatch in DDB state pipe %c cursor " | |
12985 | "(expected (%u,%u), found (%u,%u))\n", | |
12986 | pipe_name(pipe), | |
12987 | sw_entry->start, sw_entry->end, | |
12988 | hw_entry->start, hw_entry->end); | |
12989 | } | |
12990 | } | |
12991 | ||
12992 | static void | |
12993 | verify_connector_state(struct drm_device *dev, struct drm_crtc *crtc) | |
12994 | { | |
12995 | struct drm_connector *connector; | |
12996 | ||
12997 | drm_for_each_connector(connector, dev) { | |
12998 | struct drm_encoder *encoder = connector->encoder; | |
12999 | struct drm_connector_state *state = connector->state; | |
13000 | ||
13001 | if (state->crtc != crtc) | |
13002 | continue; | |
13003 | ||
13004 | intel_connector_verify_state(to_intel_connector(connector)); | |
13005 | ||
13006 | I915_STATE_WARN(state->best_encoder != encoder, | |
13007 | "connector's atomic encoder doesn't match legacy encoder\n"); | |
13008 | } | |
13009 | } | |
13010 | ||
13011 | static void | |
13012 | verify_encoder_state(struct drm_device *dev) | |
13013 | { | |
13014 | struct intel_encoder *encoder; | |
13015 | struct intel_connector *connector; | |
13016 | ||
13017 | for_each_intel_encoder(dev, encoder) { | |
13018 | bool enabled = false; | |
13019 | enum pipe pipe; | |
13020 | ||
13021 | DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", | |
13022 | encoder->base.base.id, | |
13023 | encoder->base.name); | |
13024 | ||
13025 | for_each_intel_connector(dev, connector) { | |
13026 | if (connector->base.state->best_encoder != &encoder->base) | |
13027 | continue; | |
13028 | enabled = true; | |
13029 | ||
13030 | I915_STATE_WARN(connector->base.state->crtc != | |
13031 | encoder->base.crtc, | |
13032 | "connector's crtc doesn't match encoder crtc\n"); | |
13033 | } | |
13034 | ||
13035 | I915_STATE_WARN(!!encoder->base.crtc != enabled, | |
13036 | "encoder's enabled state mismatch " | |
13037 | "(expected %i, found %i)\n", | |
13038 | !!encoder->base.crtc, enabled); | |
13039 | ||
13040 | if (!encoder->base.crtc) { | |
13041 | bool active; | |
13042 | ||
13043 | active = encoder->get_hw_state(encoder, &pipe); | |
13044 | I915_STATE_WARN(active, | |
13045 | "encoder detached but still enabled on pipe %c.\n", | |
13046 | pipe_name(pipe)); | |
13047 | } | |
13048 | } | |
13049 | } | |
13050 | ||
13051 | static void | |
13052 | verify_crtc_state(struct drm_crtc *crtc, | |
13053 | struct drm_crtc_state *old_crtc_state, | |
13054 | struct drm_crtc_state *new_crtc_state) | |
13055 | { | |
13056 | struct drm_device *dev = crtc->dev; | |
13057 | struct drm_i915_private *dev_priv = dev->dev_private; | |
13058 | struct intel_encoder *encoder; | |
13059 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
13060 | struct intel_crtc_state *pipe_config, *sw_config; | |
13061 | struct drm_atomic_state *old_state; | |
13062 | bool active; | |
13063 | ||
13064 | old_state = old_crtc_state->state; | |
13065 | __drm_atomic_helper_crtc_destroy_state(old_crtc_state); | |
13066 | pipe_config = to_intel_crtc_state(old_crtc_state); | |
13067 | memset(pipe_config, 0, sizeof(*pipe_config)); | |
13068 | pipe_config->base.crtc = crtc; | |
13069 | pipe_config->base.state = old_state; | |
13070 | ||
13071 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); | |
13072 | ||
13073 | active = dev_priv->display.get_pipe_config(intel_crtc, pipe_config); | |
13074 | ||
13075 | /* hw state is inconsistent with the pipe quirk */ | |
13076 | if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) || | |
13077 | (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)) | |
13078 | active = new_crtc_state->active; | |
13079 | ||
13080 | I915_STATE_WARN(new_crtc_state->active != active, | |
13081 | "crtc active state doesn't match with hw state " | |
13082 | "(expected %i, found %i)\n", new_crtc_state->active, active); | |
13083 | ||
13084 | I915_STATE_WARN(intel_crtc->active != new_crtc_state->active, | |
13085 | "transitional active state does not match atomic hw state " | |
13086 | "(expected %i, found %i)\n", new_crtc_state->active, intel_crtc->active); | |
13087 | ||
13088 | for_each_encoder_on_crtc(dev, crtc, encoder) { | |
13089 | enum pipe pipe; | |
13090 | ||
13091 | active = encoder->get_hw_state(encoder, &pipe); | |
13092 | I915_STATE_WARN(active != new_crtc_state->active, | |
13093 | "[ENCODER:%i] active %i with crtc active %i\n", | |
13094 | encoder->base.base.id, active, new_crtc_state->active); | |
13095 | ||
13096 | I915_STATE_WARN(active && intel_crtc->pipe != pipe, | |
13097 | "Encoder connected to wrong pipe %c\n", | |
13098 | pipe_name(pipe)); | |
13099 | ||
13100 | if (active) | |
13101 | encoder->get_config(encoder, pipe_config); | |
13102 | } | |
13103 | ||
13104 | if (!new_crtc_state->active) | |
13105 | return; | |
13106 | ||
13107 | intel_pipe_config_sanity_check(dev_priv, pipe_config); | |
13108 | ||
13109 | sw_config = to_intel_crtc_state(crtc->state); | |
13110 | if (!intel_pipe_config_compare(dev, sw_config, | |
13111 | pipe_config, false)) { | |
13112 | I915_STATE_WARN(1, "pipe state doesn't match!\n"); | |
13113 | intel_dump_pipe_config(intel_crtc, pipe_config, | |
13114 | "[hw state]"); | |
13115 | intel_dump_pipe_config(intel_crtc, sw_config, | |
13116 | "[sw state]"); | |
13117 | } | |
13118 | } | |
13119 | ||
13120 | static void | |
13121 | verify_single_dpll_state(struct drm_i915_private *dev_priv, | |
13122 | struct intel_shared_dpll *pll, | |
13123 | struct drm_crtc *crtc, | |
13124 | struct drm_crtc_state *new_state) | |
13125 | { | |
13126 | struct intel_dpll_hw_state dpll_hw_state; | |
13127 | unsigned crtc_mask; | |
13128 | bool active; | |
13129 | ||
13130 | memset(&dpll_hw_state, 0, sizeof(dpll_hw_state)); | |
13131 | ||
13132 | DRM_DEBUG_KMS("%s\n", pll->name); | |
13133 | ||
13134 | active = pll->funcs.get_hw_state(dev_priv, pll, &dpll_hw_state); | |
13135 | ||
13136 | if (!(pll->flags & INTEL_DPLL_ALWAYS_ON)) { | |
13137 | I915_STATE_WARN(!pll->on && pll->active_mask, | |
13138 | "pll in active use but not on in sw tracking\n"); | |
13139 | I915_STATE_WARN(pll->on && !pll->active_mask, | |
13140 | "pll is on but not used by any active crtc\n"); | |
13141 | I915_STATE_WARN(pll->on != active, | |
13142 | "pll on state mismatch (expected %i, found %i)\n", | |
13143 | pll->on, active); | |
13144 | } | |
13145 | ||
13146 | if (!crtc) { | |
13147 | I915_STATE_WARN(pll->active_mask & ~pll->config.crtc_mask, | |
13148 | "more active pll users than references: %x vs %x\n", | |
13149 | pll->active_mask, pll->config.crtc_mask); | |
13150 | ||
13151 | return; | |
13152 | } | |
13153 | ||
13154 | crtc_mask = 1 << drm_crtc_index(crtc); | |
13155 | ||
13156 | if (new_state->active) | |
13157 | I915_STATE_WARN(!(pll->active_mask & crtc_mask), | |
13158 | "pll active mismatch (expected pipe %c in active mask 0x%02x)\n", | |
13159 | pipe_name(drm_crtc_index(crtc)), pll->active_mask); | |
13160 | else | |
13161 | I915_STATE_WARN(pll->active_mask & crtc_mask, | |
13162 | "pll active mismatch (didn't expect pipe %c in active mask 0x%02x)\n", | |
13163 | pipe_name(drm_crtc_index(crtc)), pll->active_mask); | |
13164 | ||
13165 | I915_STATE_WARN(!(pll->config.crtc_mask & crtc_mask), | |
13166 | "pll enabled crtcs mismatch (expected 0x%x in 0x%02x)\n", | |
13167 | crtc_mask, pll->config.crtc_mask); | |
13168 | ||
13169 | I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, | |
13170 | &dpll_hw_state, | |
13171 | sizeof(dpll_hw_state)), | |
13172 | "pll hw state mismatch\n"); | |
13173 | } | |
13174 | ||
13175 | static void | |
13176 | verify_shared_dpll_state(struct drm_device *dev, struct drm_crtc *crtc, | |
13177 | struct drm_crtc_state *old_crtc_state, | |
13178 | struct drm_crtc_state *new_crtc_state) | |
13179 | { | |
13180 | struct drm_i915_private *dev_priv = dev->dev_private; | |
13181 | struct intel_crtc_state *old_state = to_intel_crtc_state(old_crtc_state); | |
13182 | struct intel_crtc_state *new_state = to_intel_crtc_state(new_crtc_state); | |
13183 | ||
13184 | if (new_state->shared_dpll) | |
13185 | verify_single_dpll_state(dev_priv, new_state->shared_dpll, crtc, new_crtc_state); | |
13186 | ||
13187 | if (old_state->shared_dpll && | |
13188 | old_state->shared_dpll != new_state->shared_dpll) { | |
13189 | unsigned crtc_mask = 1 << drm_crtc_index(crtc); | |
13190 | struct intel_shared_dpll *pll = old_state->shared_dpll; | |
13191 | ||
13192 | I915_STATE_WARN(pll->active_mask & crtc_mask, | |
13193 | "pll active mismatch (didn't expect pipe %c in active mask)\n", | |
13194 | pipe_name(drm_crtc_index(crtc))); | |
13195 | I915_STATE_WARN(pll->config.crtc_mask & crtc_mask, | |
13196 | "pll enabled crtcs mismatch (found %x in enabled mask)\n", | |
13197 | pipe_name(drm_crtc_index(crtc))); | |
13198 | } | |
13199 | } | |
13200 | ||
13201 | static void | |
13202 | intel_modeset_verify_crtc(struct drm_crtc *crtc, | |
13203 | struct drm_crtc_state *old_state, | |
13204 | struct drm_crtc_state *new_state) | |
13205 | { | |
13206 | if (!needs_modeset(new_state) && | |
13207 | !to_intel_crtc_state(new_state)->update_pipe) | |
13208 | return; | |
13209 | ||
13210 | verify_wm_state(crtc, new_state); | |
13211 | verify_connector_state(crtc->dev, crtc); | |
13212 | verify_crtc_state(crtc, old_state, new_state); | |
13213 | verify_shared_dpll_state(crtc->dev, crtc, old_state, new_state); | |
13214 | } | |
13215 | ||
13216 | static void | |
13217 | verify_disabled_dpll_state(struct drm_device *dev) | |
13218 | { | |
13219 | struct drm_i915_private *dev_priv = dev->dev_private; | |
13220 | int i; | |
13221 | ||
13222 | for (i = 0; i < dev_priv->num_shared_dpll; i++) | |
13223 | verify_single_dpll_state(dev_priv, &dev_priv->shared_dplls[i], NULL, NULL); | |
13224 | } | |
13225 | ||
13226 | static void | |
13227 | intel_modeset_verify_disabled(struct drm_device *dev) | |
13228 | { | |
13229 | verify_encoder_state(dev); | |
13230 | verify_connector_state(dev, NULL); | |
13231 | verify_disabled_dpll_state(dev); | |
13232 | } | |
13233 | ||
13234 | static void update_scanline_offset(struct intel_crtc *crtc) | |
13235 | { | |
13236 | struct drm_device *dev = crtc->base.dev; | |
13237 | ||
13238 | /* | |
13239 | * The scanline counter increments at the leading edge of hsync. | |
13240 | * | |
13241 | * On most platforms it starts counting from vtotal-1 on the | |
13242 | * first active line. That means the scanline counter value is | |
13243 | * always one less than what we would expect. Ie. just after | |
13244 | * start of vblank, which also occurs at start of hsync (on the | |
13245 | * last active line), the scanline counter will read vblank_start-1. | |
13246 | * | |
13247 | * On gen2 the scanline counter starts counting from 1 instead | |
13248 | * of vtotal-1, so we have to subtract one (or rather add vtotal-1 | |
13249 | * to keep the value positive), instead of adding one. | |
13250 | * | |
13251 | * On HSW+ the behaviour of the scanline counter depends on the output | |
13252 | * type. For DP ports it behaves like most other platforms, but on HDMI | |
13253 | * there's an extra 1 line difference. So we need to add two instead of | |
13254 | * one to the value. | |
13255 | */ | |
13256 | if (IS_GEN2(dev)) { | |
13257 | const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; | |
13258 | int vtotal; | |
13259 | ||
13260 | vtotal = adjusted_mode->crtc_vtotal; | |
13261 | if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) | |
13262 | vtotal /= 2; | |
13263 | ||
13264 | crtc->scanline_offset = vtotal - 1; | |
13265 | } else if (HAS_DDI(dev) && | |
13266 | intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) { | |
13267 | crtc->scanline_offset = 2; | |
13268 | } else | |
13269 | crtc->scanline_offset = 1; | |
13270 | } | |
13271 | ||
13272 | static void intel_modeset_clear_plls(struct drm_atomic_state *state) | |
13273 | { | |
13274 | struct drm_device *dev = state->dev; | |
13275 | struct drm_i915_private *dev_priv = to_i915(dev); | |
13276 | struct intel_shared_dpll_config *shared_dpll = NULL; | |
13277 | struct drm_crtc *crtc; | |
13278 | struct drm_crtc_state *crtc_state; | |
13279 | int i; | |
13280 | ||
13281 | if (!dev_priv->display.crtc_compute_clock) | |
13282 | return; | |
13283 | ||
13284 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
13285 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
13286 | struct intel_shared_dpll *old_dpll = | |
13287 | to_intel_crtc_state(crtc->state)->shared_dpll; | |
13288 | ||
13289 | if (!needs_modeset(crtc_state)) | |
13290 | continue; | |
13291 | ||
13292 | to_intel_crtc_state(crtc_state)->shared_dpll = NULL; | |
13293 | ||
13294 | if (!old_dpll) | |
13295 | continue; | |
13296 | ||
13297 | if (!shared_dpll) | |
13298 | shared_dpll = intel_atomic_get_shared_dpll_state(state); | |
13299 | ||
13300 | intel_shared_dpll_config_put(shared_dpll, old_dpll, intel_crtc); | |
13301 | } | |
13302 | } | |
13303 | ||
13304 | /* | |
13305 | * This implements the workaround described in the "notes" section of the mode | |
13306 | * set sequence documentation. When going from no pipes or single pipe to | |
13307 | * multiple pipes, and planes are enabled after the pipe, we need to wait at | |
13308 | * least 2 vblanks on the first pipe before enabling planes on the second pipe. | |
13309 | */ | |
13310 | static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state) | |
13311 | { | |
13312 | struct drm_crtc_state *crtc_state; | |
13313 | struct intel_crtc *intel_crtc; | |
13314 | struct drm_crtc *crtc; | |
13315 | struct intel_crtc_state *first_crtc_state = NULL; | |
13316 | struct intel_crtc_state *other_crtc_state = NULL; | |
13317 | enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE; | |
13318 | int i; | |
13319 | ||
13320 | /* look at all crtc's that are going to be enabled in during modeset */ | |
13321 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
13322 | intel_crtc = to_intel_crtc(crtc); | |
13323 | ||
13324 | if (!crtc_state->active || !needs_modeset(crtc_state)) | |
13325 | continue; | |
13326 | ||
13327 | if (first_crtc_state) { | |
13328 | other_crtc_state = to_intel_crtc_state(crtc_state); | |
13329 | break; | |
13330 | } else { | |
13331 | first_crtc_state = to_intel_crtc_state(crtc_state); | |
13332 | first_pipe = intel_crtc->pipe; | |
13333 | } | |
13334 | } | |
13335 | ||
13336 | /* No workaround needed? */ | |
13337 | if (!first_crtc_state) | |
13338 | return 0; | |
13339 | ||
13340 | /* w/a possibly needed, check how many crtc's are already enabled. */ | |
13341 | for_each_intel_crtc(state->dev, intel_crtc) { | |
13342 | struct intel_crtc_state *pipe_config; | |
13343 | ||
13344 | pipe_config = intel_atomic_get_crtc_state(state, intel_crtc); | |
13345 | if (IS_ERR(pipe_config)) | |
13346 | return PTR_ERR(pipe_config); | |
13347 | ||
13348 | pipe_config->hsw_workaround_pipe = INVALID_PIPE; | |
13349 | ||
13350 | if (!pipe_config->base.active || | |
13351 | needs_modeset(&pipe_config->base)) | |
13352 | continue; | |
13353 | ||
13354 | /* 2 or more enabled crtcs means no need for w/a */ | |
13355 | if (enabled_pipe != INVALID_PIPE) | |
13356 | return 0; | |
13357 | ||
13358 | enabled_pipe = intel_crtc->pipe; | |
13359 | } | |
13360 | ||
13361 | if (enabled_pipe != INVALID_PIPE) | |
13362 | first_crtc_state->hsw_workaround_pipe = enabled_pipe; | |
13363 | else if (other_crtc_state) | |
13364 | other_crtc_state->hsw_workaround_pipe = first_pipe; | |
13365 | ||
13366 | return 0; | |
13367 | } | |
13368 | ||
13369 | static int intel_modeset_all_pipes(struct drm_atomic_state *state) | |
13370 | { | |
13371 | struct drm_crtc *crtc; | |
13372 | struct drm_crtc_state *crtc_state; | |
13373 | int ret = 0; | |
13374 | ||
13375 | /* add all active pipes to the state */ | |
13376 | for_each_crtc(state->dev, crtc) { | |
13377 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
13378 | if (IS_ERR(crtc_state)) | |
13379 | return PTR_ERR(crtc_state); | |
13380 | ||
13381 | if (!crtc_state->active || needs_modeset(crtc_state)) | |
13382 | continue; | |
13383 | ||
13384 | crtc_state->mode_changed = true; | |
13385 | ||
13386 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
13387 | if (ret) | |
13388 | break; | |
13389 | ||
13390 | ret = drm_atomic_add_affected_planes(state, crtc); | |
13391 | if (ret) | |
13392 | break; | |
13393 | } | |
13394 | ||
13395 | return ret; | |
13396 | } | |
13397 | ||
13398 | static int intel_modeset_checks(struct drm_atomic_state *state) | |
13399 | { | |
13400 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
13401 | struct drm_i915_private *dev_priv = state->dev->dev_private; | |
13402 | struct drm_crtc *crtc; | |
13403 | struct drm_crtc_state *crtc_state; | |
13404 | int ret = 0, i; | |
13405 | ||
13406 | if (!check_digital_port_conflicts(state)) { | |
13407 | DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n"); | |
13408 | return -EINVAL; | |
13409 | } | |
13410 | ||
13411 | intel_state->modeset = true; | |
13412 | intel_state->active_crtcs = dev_priv->active_crtcs; | |
13413 | ||
13414 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
13415 | if (crtc_state->active) | |
13416 | intel_state->active_crtcs |= 1 << i; | |
13417 | else | |
13418 | intel_state->active_crtcs &= ~(1 << i); | |
13419 | ||
13420 | if (crtc_state->active != crtc->state->active) | |
13421 | intel_state->active_pipe_changes |= drm_crtc_mask(crtc); | |
13422 | } | |
13423 | ||
13424 | /* | |
13425 | * See if the config requires any additional preparation, e.g. | |
13426 | * to adjust global state with pipes off. We need to do this | |
13427 | * here so we can get the modeset_pipe updated config for the new | |
13428 | * mode set on this crtc. For other crtcs we need to use the | |
13429 | * adjusted_mode bits in the crtc directly. | |
13430 | */ | |
13431 | if (dev_priv->display.modeset_calc_cdclk) { | |
13432 | if (!intel_state->cdclk_pll_vco) | |
13433 | intel_state->cdclk_pll_vco = dev_priv->cdclk_pll.vco; | |
13434 | if (!intel_state->cdclk_pll_vco) | |
13435 | intel_state->cdclk_pll_vco = dev_priv->skl_preferred_vco_freq; | |
13436 | ||
13437 | ret = dev_priv->display.modeset_calc_cdclk(state); | |
13438 | if (ret < 0) | |
13439 | return ret; | |
13440 | ||
13441 | if (intel_state->dev_cdclk != dev_priv->cdclk_freq || | |
13442 | intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco) | |
13443 | ret = intel_modeset_all_pipes(state); | |
13444 | ||
13445 | if (ret < 0) | |
13446 | return ret; | |
13447 | ||
13448 | DRM_DEBUG_KMS("New cdclk calculated to be atomic %u, actual %u\n", | |
13449 | intel_state->cdclk, intel_state->dev_cdclk); | |
13450 | } else | |
13451 | to_intel_atomic_state(state)->cdclk = dev_priv->atomic_cdclk_freq; | |
13452 | ||
13453 | intel_modeset_clear_plls(state); | |
13454 | ||
13455 | if (IS_HASWELL(dev_priv)) | |
13456 | return haswell_mode_set_planes_workaround(state); | |
13457 | ||
13458 | return 0; | |
13459 | } | |
13460 | ||
13461 | /* | |
13462 | * Handle calculation of various watermark data at the end of the atomic check | |
13463 | * phase. The code here should be run after the per-crtc and per-plane 'check' | |
13464 | * handlers to ensure that all derived state has been updated. | |
13465 | */ | |
13466 | static int calc_watermark_data(struct drm_atomic_state *state) | |
13467 | { | |
13468 | struct drm_device *dev = state->dev; | |
13469 | struct drm_i915_private *dev_priv = to_i915(dev); | |
13470 | ||
13471 | /* Is there platform-specific watermark information to calculate? */ | |
13472 | if (dev_priv->display.compute_global_watermarks) | |
13473 | return dev_priv->display.compute_global_watermarks(state); | |
13474 | ||
13475 | return 0; | |
13476 | } | |
13477 | ||
13478 | /** | |
13479 | * intel_atomic_check - validate state object | |
13480 | * @dev: drm device | |
13481 | * @state: state to validate | |
13482 | */ | |
13483 | static int intel_atomic_check(struct drm_device *dev, | |
13484 | struct drm_atomic_state *state) | |
13485 | { | |
13486 | struct drm_i915_private *dev_priv = to_i915(dev); | |
13487 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
13488 | struct drm_crtc *crtc; | |
13489 | struct drm_crtc_state *crtc_state; | |
13490 | int ret, i; | |
13491 | bool any_ms = false; | |
13492 | ||
13493 | ret = drm_atomic_helper_check_modeset(dev, state); | |
13494 | if (ret) | |
13495 | return ret; | |
13496 | ||
13497 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
13498 | struct intel_crtc_state *pipe_config = | |
13499 | to_intel_crtc_state(crtc_state); | |
13500 | ||
13501 | /* Catch I915_MODE_FLAG_INHERITED */ | |
13502 | if (crtc_state->mode.private_flags != crtc->state->mode.private_flags) | |
13503 | crtc_state->mode_changed = true; | |
13504 | ||
13505 | if (!needs_modeset(crtc_state)) | |
13506 | continue; | |
13507 | ||
13508 | if (!crtc_state->enable) { | |
13509 | any_ms = true; | |
13510 | continue; | |
13511 | } | |
13512 | ||
13513 | /* FIXME: For only active_changed we shouldn't need to do any | |
13514 | * state recomputation at all. */ | |
13515 | ||
13516 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
13517 | if (ret) | |
13518 | return ret; | |
13519 | ||
13520 | ret = intel_modeset_pipe_config(crtc, pipe_config); | |
13521 | if (ret) { | |
13522 | intel_dump_pipe_config(to_intel_crtc(crtc), | |
13523 | pipe_config, "[failed]"); | |
13524 | return ret; | |
13525 | } | |
13526 | ||
13527 | if (i915.fastboot && | |
13528 | intel_pipe_config_compare(dev, | |
13529 | to_intel_crtc_state(crtc->state), | |
13530 | pipe_config, true)) { | |
13531 | crtc_state->mode_changed = false; | |
13532 | to_intel_crtc_state(crtc_state)->update_pipe = true; | |
13533 | } | |
13534 | ||
13535 | if (needs_modeset(crtc_state)) | |
13536 | any_ms = true; | |
13537 | ||
13538 | ret = drm_atomic_add_affected_planes(state, crtc); | |
13539 | if (ret) | |
13540 | return ret; | |
13541 | ||
13542 | intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config, | |
13543 | needs_modeset(crtc_state) ? | |
13544 | "[modeset]" : "[fastset]"); | |
13545 | } | |
13546 | ||
13547 | if (any_ms) { | |
13548 | ret = intel_modeset_checks(state); | |
13549 | ||
13550 | if (ret) | |
13551 | return ret; | |
13552 | } else | |
13553 | intel_state->cdclk = dev_priv->cdclk_freq; | |
13554 | ||
13555 | ret = drm_atomic_helper_check_planes(dev, state); | |
13556 | if (ret) | |
13557 | return ret; | |
13558 | ||
13559 | intel_fbc_choose_crtc(dev_priv, state); | |
13560 | return calc_watermark_data(state); | |
13561 | } | |
13562 | ||
13563 | static int intel_atomic_prepare_commit(struct drm_device *dev, | |
13564 | struct drm_atomic_state *state, | |
13565 | bool nonblock) | |
13566 | { | |
13567 | struct drm_i915_private *dev_priv = dev->dev_private; | |
13568 | struct drm_plane_state *plane_state; | |
13569 | struct drm_crtc_state *crtc_state; | |
13570 | struct drm_plane *plane; | |
13571 | struct drm_crtc *crtc; | |
13572 | int i, ret; | |
13573 | ||
13574 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
13575 | if (state->legacy_cursor_update) | |
13576 | continue; | |
13577 | ||
13578 | ret = intel_crtc_wait_for_pending_flips(crtc); | |
13579 | if (ret) | |
13580 | return ret; | |
13581 | ||
13582 | if (atomic_read(&to_intel_crtc(crtc)->unpin_work_count) >= 2) | |
13583 | flush_workqueue(dev_priv->wq); | |
13584 | } | |
13585 | ||
13586 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
13587 | if (ret) | |
13588 | return ret; | |
13589 | ||
13590 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
13591 | mutex_unlock(&dev->struct_mutex); | |
13592 | ||
13593 | if (!ret && !nonblock) { | |
13594 | for_each_plane_in_state(state, plane, plane_state, i) { | |
13595 | struct intel_plane_state *intel_plane_state = | |
13596 | to_intel_plane_state(plane_state); | |
13597 | ||
13598 | if (!intel_plane_state->wait_req) | |
13599 | continue; | |
13600 | ||
13601 | ret = __i915_wait_request(intel_plane_state->wait_req, | |
13602 | true, NULL, NULL); | |
13603 | if (ret) { | |
13604 | /* Any hang should be swallowed by the wait */ | |
13605 | WARN_ON(ret == -EIO); | |
13606 | mutex_lock(&dev->struct_mutex); | |
13607 | drm_atomic_helper_cleanup_planes(dev, state); | |
13608 | mutex_unlock(&dev->struct_mutex); | |
13609 | break; | |
13610 | } | |
13611 | } | |
13612 | } | |
13613 | ||
13614 | return ret; | |
13615 | } | |
13616 | ||
13617 | u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc) | |
13618 | { | |
13619 | struct drm_device *dev = crtc->base.dev; | |
13620 | ||
13621 | if (!dev->max_vblank_count) | |
13622 | return drm_accurate_vblank_count(&crtc->base); | |
13623 | ||
13624 | return dev->driver->get_vblank_counter(dev, crtc->pipe); | |
13625 | } | |
13626 | ||
13627 | static void intel_atomic_wait_for_vblanks(struct drm_device *dev, | |
13628 | struct drm_i915_private *dev_priv, | |
13629 | unsigned crtc_mask) | |
13630 | { | |
13631 | unsigned last_vblank_count[I915_MAX_PIPES]; | |
13632 | enum pipe pipe; | |
13633 | int ret; | |
13634 | ||
13635 | if (!crtc_mask) | |
13636 | return; | |
13637 | ||
13638 | for_each_pipe(dev_priv, pipe) { | |
13639 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
13640 | ||
13641 | if (!((1 << pipe) & crtc_mask)) | |
13642 | continue; | |
13643 | ||
13644 | ret = drm_crtc_vblank_get(crtc); | |
13645 | if (WARN_ON(ret != 0)) { | |
13646 | crtc_mask &= ~(1 << pipe); | |
13647 | continue; | |
13648 | } | |
13649 | ||
13650 | last_vblank_count[pipe] = drm_crtc_vblank_count(crtc); | |
13651 | } | |
13652 | ||
13653 | for_each_pipe(dev_priv, pipe) { | |
13654 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
13655 | long lret; | |
13656 | ||
13657 | if (!((1 << pipe) & crtc_mask)) | |
13658 | continue; | |
13659 | ||
13660 | lret = wait_event_timeout(dev->vblank[pipe].queue, | |
13661 | last_vblank_count[pipe] != | |
13662 | drm_crtc_vblank_count(crtc), | |
13663 | msecs_to_jiffies(50)); | |
13664 | ||
13665 | WARN(!lret, "pipe %c vblank wait timed out\n", pipe_name(pipe)); | |
13666 | ||
13667 | drm_crtc_vblank_put(crtc); | |
13668 | } | |
13669 | } | |
13670 | ||
13671 | static bool needs_vblank_wait(struct intel_crtc_state *crtc_state) | |
13672 | { | |
13673 | /* fb updated, need to unpin old fb */ | |
13674 | if (crtc_state->fb_changed) | |
13675 | return true; | |
13676 | ||
13677 | /* wm changes, need vblank before final wm's */ | |
13678 | if (crtc_state->update_wm_post) | |
13679 | return true; | |
13680 | ||
13681 | /* | |
13682 | * cxsr is re-enabled after vblank. | |
13683 | * This is already handled by crtc_state->update_wm_post, | |
13684 | * but added for clarity. | |
13685 | */ | |
13686 | if (crtc_state->disable_cxsr) | |
13687 | return true; | |
13688 | ||
13689 | return false; | |
13690 | } | |
13691 | ||
13692 | static void intel_atomic_commit_tail(struct drm_atomic_state *state) | |
13693 | { | |
13694 | struct drm_device *dev = state->dev; | |
13695 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
13696 | struct drm_i915_private *dev_priv = dev->dev_private; | |
13697 | struct drm_crtc_state *old_crtc_state; | |
13698 | struct drm_crtc *crtc; | |
13699 | struct intel_crtc_state *intel_cstate; | |
13700 | struct drm_plane *plane; | |
13701 | struct drm_plane_state *plane_state; | |
13702 | bool hw_check = intel_state->modeset; | |
13703 | unsigned long put_domains[I915_MAX_PIPES] = {}; | |
13704 | unsigned crtc_vblank_mask = 0; | |
13705 | int i, ret; | |
13706 | ||
13707 | for_each_plane_in_state(state, plane, plane_state, i) { | |
13708 | struct intel_plane_state *intel_plane_state = | |
13709 | to_intel_plane_state(plane_state); | |
13710 | ||
13711 | if (!intel_plane_state->wait_req) | |
13712 | continue; | |
13713 | ||
13714 | ret = __i915_wait_request(intel_plane_state->wait_req, | |
13715 | true, NULL, NULL); | |
13716 | /* EIO should be eaten, and we can't get interrupted in the | |
13717 | * worker, and blocking commits have waited already. */ | |
13718 | WARN_ON(ret); | |
13719 | } | |
13720 | ||
13721 | drm_atomic_helper_wait_for_dependencies(state); | |
13722 | ||
13723 | if (intel_state->modeset) { | |
13724 | memcpy(dev_priv->min_pixclk, intel_state->min_pixclk, | |
13725 | sizeof(intel_state->min_pixclk)); | |
13726 | dev_priv->active_crtcs = intel_state->active_crtcs; | |
13727 | dev_priv->atomic_cdclk_freq = intel_state->cdclk; | |
13728 | ||
13729 | intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET); | |
13730 | } | |
13731 | ||
13732 | for_each_crtc_in_state(state, crtc, old_crtc_state, i) { | |
13733 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
13734 | ||
13735 | if (needs_modeset(crtc->state) || | |
13736 | to_intel_crtc_state(crtc->state)->update_pipe) { | |
13737 | hw_check = true; | |
13738 | ||
13739 | put_domains[to_intel_crtc(crtc)->pipe] = | |
13740 | modeset_get_crtc_power_domains(crtc, | |
13741 | to_intel_crtc_state(crtc->state)); | |
13742 | } | |
13743 | ||
13744 | if (!needs_modeset(crtc->state)) | |
13745 | continue; | |
13746 | ||
13747 | intel_pre_plane_update(to_intel_crtc_state(old_crtc_state)); | |
13748 | ||
13749 | if (old_crtc_state->active) { | |
13750 | intel_crtc_disable_planes(crtc, old_crtc_state->plane_mask); | |
13751 | dev_priv->display.crtc_disable(crtc); | |
13752 | intel_crtc->active = false; | |
13753 | intel_fbc_disable(intel_crtc); | |
13754 | intel_disable_shared_dpll(intel_crtc); | |
13755 | ||
13756 | /* | |
13757 | * Underruns don't always raise | |
13758 | * interrupts, so check manually. | |
13759 | */ | |
13760 | intel_check_cpu_fifo_underruns(dev_priv); | |
13761 | intel_check_pch_fifo_underruns(dev_priv); | |
13762 | ||
13763 | if (!crtc->state->active) | |
13764 | intel_update_watermarks(crtc); | |
13765 | } | |
13766 | } | |
13767 | ||
13768 | /* Only after disabling all output pipelines that will be changed can we | |
13769 | * update the the output configuration. */ | |
13770 | intel_modeset_update_crtc_state(state); | |
13771 | ||
13772 | if (intel_state->modeset) { | |
13773 | drm_atomic_helper_update_legacy_modeset_state(state->dev, state); | |
13774 | ||
13775 | if (dev_priv->display.modeset_commit_cdclk && | |
13776 | (intel_state->dev_cdclk != dev_priv->cdclk_freq || | |
13777 | intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco)) | |
13778 | dev_priv->display.modeset_commit_cdclk(state); | |
13779 | ||
13780 | intel_modeset_verify_disabled(dev); | |
13781 | } | |
13782 | ||
13783 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
13784 | for_each_crtc_in_state(state, crtc, old_crtc_state, i) { | |
13785 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
13786 | bool modeset = needs_modeset(crtc->state); | |
13787 | struct intel_crtc_state *pipe_config = | |
13788 | to_intel_crtc_state(crtc->state); | |
13789 | ||
13790 | if (modeset && crtc->state->active) { | |
13791 | update_scanline_offset(to_intel_crtc(crtc)); | |
13792 | dev_priv->display.crtc_enable(crtc); | |
13793 | } | |
13794 | ||
13795 | /* Complete events for now disable pipes here. */ | |
13796 | if (modeset && !crtc->state->active && crtc->state->event) { | |
13797 | spin_lock_irq(&dev->event_lock); | |
13798 | drm_crtc_send_vblank_event(crtc, crtc->state->event); | |
13799 | spin_unlock_irq(&dev->event_lock); | |
13800 | ||
13801 | crtc->state->event = NULL; | |
13802 | } | |
13803 | ||
13804 | if (!modeset) | |
13805 | intel_pre_plane_update(to_intel_crtc_state(old_crtc_state)); | |
13806 | ||
13807 | if (crtc->state->active && | |
13808 | drm_atomic_get_existing_plane_state(state, crtc->primary)) | |
13809 | intel_fbc_enable(intel_crtc, pipe_config, to_intel_plane_state(crtc->primary->state)); | |
13810 | ||
13811 | if (crtc->state->active) | |
13812 | drm_atomic_helper_commit_planes_on_crtc(old_crtc_state); | |
13813 | ||
13814 | if (pipe_config->base.active && needs_vblank_wait(pipe_config)) | |
13815 | crtc_vblank_mask |= 1 << i; | |
13816 | } | |
13817 | ||
13818 | /* FIXME: We should call drm_atomic_helper_commit_hw_done() here | |
13819 | * already, but still need the state for the delayed optimization. To | |
13820 | * fix this: | |
13821 | * - wrap the optimization/post_plane_update stuff into a per-crtc work. | |
13822 | * - schedule that vblank worker _before_ calling hw_done | |
13823 | * - at the start of commit_tail, cancel it _synchrously | |
13824 | * - switch over to the vblank wait helper in the core after that since | |
13825 | * we don't need out special handling any more. | |
13826 | */ | |
13827 | if (!state->legacy_cursor_update) | |
13828 | intel_atomic_wait_for_vblanks(dev, dev_priv, crtc_vblank_mask); | |
13829 | ||
13830 | /* | |
13831 | * Now that the vblank has passed, we can go ahead and program the | |
13832 | * optimal watermarks on platforms that need two-step watermark | |
13833 | * programming. | |
13834 | * | |
13835 | * TODO: Move this (and other cleanup) to an async worker eventually. | |
13836 | */ | |
13837 | for_each_crtc_in_state(state, crtc, old_crtc_state, i) { | |
13838 | intel_cstate = to_intel_crtc_state(crtc->state); | |
13839 | ||
13840 | if (dev_priv->display.optimize_watermarks) | |
13841 | dev_priv->display.optimize_watermarks(intel_cstate); | |
13842 | } | |
13843 | ||
13844 | for_each_crtc_in_state(state, crtc, old_crtc_state, i) { | |
13845 | intel_post_plane_update(to_intel_crtc_state(old_crtc_state)); | |
13846 | ||
13847 | if (put_domains[i]) | |
13848 | modeset_put_power_domains(dev_priv, put_domains[i]); | |
13849 | ||
13850 | intel_modeset_verify_crtc(crtc, old_crtc_state, crtc->state); | |
13851 | } | |
13852 | ||
13853 | drm_atomic_helper_commit_hw_done(state); | |
13854 | ||
13855 | if (intel_state->modeset) | |
13856 | intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET); | |
13857 | ||
13858 | mutex_lock(&dev->struct_mutex); | |
13859 | drm_atomic_helper_cleanup_planes(dev, state); | |
13860 | mutex_unlock(&dev->struct_mutex); | |
13861 | ||
13862 | drm_atomic_helper_commit_cleanup_done(state); | |
13863 | ||
13864 | drm_atomic_state_free(state); | |
13865 | ||
13866 | /* As one of the primary mmio accessors, KMS has a high likelihood | |
13867 | * of triggering bugs in unclaimed access. After we finish | |
13868 | * modesetting, see if an error has been flagged, and if so | |
13869 | * enable debugging for the next modeset - and hope we catch | |
13870 | * the culprit. | |
13871 | * | |
13872 | * XXX note that we assume display power is on at this point. | |
13873 | * This might hold true now but we need to add pm helper to check | |
13874 | * unclaimed only when the hardware is on, as atomic commits | |
13875 | * can happen also when the device is completely off. | |
13876 | */ | |
13877 | intel_uncore_arm_unclaimed_mmio_detection(dev_priv); | |
13878 | } | |
13879 | ||
13880 | static void intel_atomic_commit_work(struct work_struct *work) | |
13881 | { | |
13882 | struct drm_atomic_state *state = container_of(work, | |
13883 | struct drm_atomic_state, | |
13884 | commit_work); | |
13885 | intel_atomic_commit_tail(state); | |
13886 | } | |
13887 | ||
13888 | /** | |
13889 | * intel_atomic_commit - commit validated state object | |
13890 | * @dev: DRM device | |
13891 | * @state: the top-level driver state object | |
13892 | * @nonblock: nonblocking commit | |
13893 | * | |
13894 | * This function commits a top-level state object that has been validated | |
13895 | * with drm_atomic_helper_check(). | |
13896 | * | |
13897 | * FIXME: Atomic modeset support for i915 is not yet complete. At the moment | |
13898 | * nonblocking commits are only safe for pure plane updates. Everything else | |
13899 | * should work though. | |
13900 | * | |
13901 | * RETURNS | |
13902 | * Zero for success or -errno. | |
13903 | */ | |
13904 | static int intel_atomic_commit(struct drm_device *dev, | |
13905 | struct drm_atomic_state *state, | |
13906 | bool nonblock) | |
13907 | { | |
13908 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
13909 | struct drm_i915_private *dev_priv = dev->dev_private; | |
13910 | int ret = 0; | |
13911 | ||
13912 | if (intel_state->modeset && nonblock) { | |
13913 | DRM_DEBUG_KMS("nonblocking commit for modeset not yet implemented.\n"); | |
13914 | return -EINVAL; | |
13915 | } | |
13916 | ||
13917 | ret = drm_atomic_helper_setup_commit(state, nonblock); | |
13918 | if (ret) | |
13919 | return ret; | |
13920 | ||
13921 | INIT_WORK(&state->commit_work, intel_atomic_commit_work); | |
13922 | ||
13923 | ret = intel_atomic_prepare_commit(dev, state, nonblock); | |
13924 | if (ret) { | |
13925 | DRM_DEBUG_ATOMIC("Preparing state failed with %i\n", ret); | |
13926 | return ret; | |
13927 | } | |
13928 | ||
13929 | drm_atomic_helper_swap_state(state, true); | |
13930 | dev_priv->wm.distrust_bios_wm = false; | |
13931 | dev_priv->wm.skl_results = intel_state->wm_results; | |
13932 | intel_shared_dpll_commit(state); | |
13933 | ||
13934 | if (nonblock) | |
13935 | queue_work(system_unbound_wq, &state->commit_work); | |
13936 | else | |
13937 | intel_atomic_commit_tail(state); | |
13938 | ||
13939 | return 0; | |
13940 | } | |
13941 | ||
13942 | void intel_crtc_restore_mode(struct drm_crtc *crtc) | |
13943 | { | |
13944 | struct drm_device *dev = crtc->dev; | |
13945 | struct drm_atomic_state *state; | |
13946 | struct drm_crtc_state *crtc_state; | |
13947 | int ret; | |
13948 | ||
13949 | state = drm_atomic_state_alloc(dev); | |
13950 | if (!state) { | |
13951 | DRM_DEBUG_KMS("[CRTC:%d:%s] crtc restore failed, out of memory", | |
13952 | crtc->base.id, crtc->name); | |
13953 | return; | |
13954 | } | |
13955 | ||
13956 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
13957 | ||
13958 | retry: | |
13959 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
13960 | ret = PTR_ERR_OR_ZERO(crtc_state); | |
13961 | if (!ret) { | |
13962 | if (!crtc_state->active) | |
13963 | goto out; | |
13964 | ||
13965 | crtc_state->mode_changed = true; | |
13966 | ret = drm_atomic_commit(state); | |
13967 | } | |
13968 | ||
13969 | if (ret == -EDEADLK) { | |
13970 | drm_atomic_state_clear(state); | |
13971 | drm_modeset_backoff(state->acquire_ctx); | |
13972 | goto retry; | |
13973 | } | |
13974 | ||
13975 | if (ret) | |
13976 | out: | |
13977 | drm_atomic_state_free(state); | |
13978 | } | |
13979 | ||
13980 | #undef for_each_intel_crtc_masked | |
13981 | ||
13982 | static const struct drm_crtc_funcs intel_crtc_funcs = { | |
13983 | .gamma_set = drm_atomic_helper_legacy_gamma_set, | |
13984 | .set_config = drm_atomic_helper_set_config, | |
13985 | .set_property = drm_atomic_helper_crtc_set_property, | |
13986 | .destroy = intel_crtc_destroy, | |
13987 | .page_flip = intel_crtc_page_flip, | |
13988 | .atomic_duplicate_state = intel_crtc_duplicate_state, | |
13989 | .atomic_destroy_state = intel_crtc_destroy_state, | |
13990 | }; | |
13991 | ||
13992 | /** | |
13993 | * intel_prepare_plane_fb - Prepare fb for usage on plane | |
13994 | * @plane: drm plane to prepare for | |
13995 | * @fb: framebuffer to prepare for presentation | |
13996 | * | |
13997 | * Prepares a framebuffer for usage on a display plane. Generally this | |
13998 | * involves pinning the underlying object and updating the frontbuffer tracking | |
13999 | * bits. Some older platforms need special physical address handling for | |
14000 | * cursor planes. | |
14001 | * | |
14002 | * Must be called with struct_mutex held. | |
14003 | * | |
14004 | * Returns 0 on success, negative error code on failure. | |
14005 | */ | |
14006 | int | |
14007 | intel_prepare_plane_fb(struct drm_plane *plane, | |
14008 | const struct drm_plane_state *new_state) | |
14009 | { | |
14010 | struct drm_device *dev = plane->dev; | |
14011 | struct drm_framebuffer *fb = new_state->fb; | |
14012 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
14013 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
14014 | struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb); | |
14015 | int ret = 0; | |
14016 | ||
14017 | if (!obj && !old_obj) | |
14018 | return 0; | |
14019 | ||
14020 | if (old_obj) { | |
14021 | struct drm_crtc_state *crtc_state = | |
14022 | drm_atomic_get_existing_crtc_state(new_state->state, plane->state->crtc); | |
14023 | ||
14024 | /* Big Hammer, we also need to ensure that any pending | |
14025 | * MI_WAIT_FOR_EVENT inside a user batch buffer on the | |
14026 | * current scanout is retired before unpinning the old | |
14027 | * framebuffer. Note that we rely on userspace rendering | |
14028 | * into the buffer attached to the pipe they are waiting | |
14029 | * on. If not, userspace generates a GPU hang with IPEHR | |
14030 | * point to the MI_WAIT_FOR_EVENT. | |
14031 | * | |
14032 | * This should only fail upon a hung GPU, in which case we | |
14033 | * can safely continue. | |
14034 | */ | |
14035 | if (needs_modeset(crtc_state)) | |
14036 | ret = i915_gem_object_wait_rendering(old_obj, true); | |
14037 | if (ret) { | |
14038 | /* GPU hangs should have been swallowed by the wait */ | |
14039 | WARN_ON(ret == -EIO); | |
14040 | return ret; | |
14041 | } | |
14042 | } | |
14043 | ||
14044 | /* For framebuffer backed by dmabuf, wait for fence */ | |
14045 | if (obj && obj->base.dma_buf) { | |
14046 | long lret; | |
14047 | ||
14048 | lret = reservation_object_wait_timeout_rcu(obj->base.dma_buf->resv, | |
14049 | false, true, | |
14050 | MAX_SCHEDULE_TIMEOUT); | |
14051 | if (lret == -ERESTARTSYS) | |
14052 | return lret; | |
14053 | ||
14054 | WARN(lret < 0, "waiting returns %li\n", lret); | |
14055 | } | |
14056 | ||
14057 | if (!obj) { | |
14058 | ret = 0; | |
14059 | } else if (plane->type == DRM_PLANE_TYPE_CURSOR && | |
14060 | INTEL_INFO(dev)->cursor_needs_physical) { | |
14061 | int align = IS_I830(dev) ? 16 * 1024 : 256; | |
14062 | ret = i915_gem_object_attach_phys(obj, align); | |
14063 | if (ret) | |
14064 | DRM_DEBUG_KMS("failed to attach phys object\n"); | |
14065 | } else { | |
14066 | ret = intel_pin_and_fence_fb_obj(fb, new_state->rotation); | |
14067 | } | |
14068 | ||
14069 | if (ret == 0) { | |
14070 | if (obj) { | |
14071 | struct intel_plane_state *plane_state = | |
14072 | to_intel_plane_state(new_state); | |
14073 | ||
14074 | i915_gem_request_assign(&plane_state->wait_req, | |
14075 | obj->last_write_req); | |
14076 | } | |
14077 | ||
14078 | i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit); | |
14079 | } | |
14080 | ||
14081 | return ret; | |
14082 | } | |
14083 | ||
14084 | /** | |
14085 | * intel_cleanup_plane_fb - Cleans up an fb after plane use | |
14086 | * @plane: drm plane to clean up for | |
14087 | * @fb: old framebuffer that was on plane | |
14088 | * | |
14089 | * Cleans up a framebuffer that has just been removed from a plane. | |
14090 | * | |
14091 | * Must be called with struct_mutex held. | |
14092 | */ | |
14093 | void | |
14094 | intel_cleanup_plane_fb(struct drm_plane *plane, | |
14095 | const struct drm_plane_state *old_state) | |
14096 | { | |
14097 | struct drm_device *dev = plane->dev; | |
14098 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
14099 | struct intel_plane_state *old_intel_state; | |
14100 | struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb); | |
14101 | struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb); | |
14102 | ||
14103 | old_intel_state = to_intel_plane_state(old_state); | |
14104 | ||
14105 | if (!obj && !old_obj) | |
14106 | return; | |
14107 | ||
14108 | if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR || | |
14109 | !INTEL_INFO(dev)->cursor_needs_physical)) | |
14110 | intel_unpin_fb_obj(old_state->fb, old_state->rotation); | |
14111 | ||
14112 | /* prepare_fb aborted? */ | |
14113 | if ((old_obj && (old_obj->frontbuffer_bits & intel_plane->frontbuffer_bit)) || | |
14114 | (obj && !(obj->frontbuffer_bits & intel_plane->frontbuffer_bit))) | |
14115 | i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit); | |
14116 | ||
14117 | i915_gem_request_assign(&old_intel_state->wait_req, NULL); | |
14118 | } | |
14119 | ||
14120 | int | |
14121 | skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state) | |
14122 | { | |
14123 | int max_scale; | |
14124 | struct drm_device *dev; | |
14125 | struct drm_i915_private *dev_priv; | |
14126 | int crtc_clock, cdclk; | |
14127 | ||
14128 | if (!intel_crtc || !crtc_state->base.enable) | |
14129 | return DRM_PLANE_HELPER_NO_SCALING; | |
14130 | ||
14131 | dev = intel_crtc->base.dev; | |
14132 | dev_priv = dev->dev_private; | |
14133 | crtc_clock = crtc_state->base.adjusted_mode.crtc_clock; | |
14134 | cdclk = to_intel_atomic_state(crtc_state->base.state)->cdclk; | |
14135 | ||
14136 | if (WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)) | |
14137 | return DRM_PLANE_HELPER_NO_SCALING; | |
14138 | ||
14139 | /* | |
14140 | * skl max scale is lower of: | |
14141 | * close to 3 but not 3, -1 is for that purpose | |
14142 | * or | |
14143 | * cdclk/crtc_clock | |
14144 | */ | |
14145 | max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock)); | |
14146 | ||
14147 | return max_scale; | |
14148 | } | |
14149 | ||
14150 | static int | |
14151 | intel_check_primary_plane(struct drm_plane *plane, | |
14152 | struct intel_crtc_state *crtc_state, | |
14153 | struct intel_plane_state *state) | |
14154 | { | |
14155 | struct drm_crtc *crtc = state->base.crtc; | |
14156 | struct drm_framebuffer *fb = state->base.fb; | |
14157 | int min_scale = DRM_PLANE_HELPER_NO_SCALING; | |
14158 | int max_scale = DRM_PLANE_HELPER_NO_SCALING; | |
14159 | bool can_position = false; | |
14160 | ||
14161 | if (INTEL_INFO(plane->dev)->gen >= 9) { | |
14162 | /* use scaler when colorkey is not required */ | |
14163 | if (state->ckey.flags == I915_SET_COLORKEY_NONE) { | |
14164 | min_scale = 1; | |
14165 | max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state); | |
14166 | } | |
14167 | can_position = true; | |
14168 | } | |
14169 | ||
14170 | return drm_plane_helper_check_update(plane, crtc, fb, &state->src, | |
14171 | &state->dst, &state->clip, | |
14172 | min_scale, max_scale, | |
14173 | can_position, true, | |
14174 | &state->visible); | |
14175 | } | |
14176 | ||
14177 | static void intel_begin_crtc_commit(struct drm_crtc *crtc, | |
14178 | struct drm_crtc_state *old_crtc_state) | |
14179 | { | |
14180 | struct drm_device *dev = crtc->dev; | |
14181 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
14182 | struct intel_crtc_state *old_intel_state = | |
14183 | to_intel_crtc_state(old_crtc_state); | |
14184 | bool modeset = needs_modeset(crtc->state); | |
14185 | ||
14186 | /* Perform vblank evasion around commit operation */ | |
14187 | intel_pipe_update_start(intel_crtc); | |
14188 | ||
14189 | if (modeset) | |
14190 | return; | |
14191 | ||
14192 | if (crtc->state->color_mgmt_changed || to_intel_crtc_state(crtc->state)->update_pipe) { | |
14193 | intel_color_set_csc(crtc->state); | |
14194 | intel_color_load_luts(crtc->state); | |
14195 | } | |
14196 | ||
14197 | if (to_intel_crtc_state(crtc->state)->update_pipe) | |
14198 | intel_update_pipe_config(intel_crtc, old_intel_state); | |
14199 | else if (INTEL_INFO(dev)->gen >= 9) | |
14200 | skl_detach_scalers(intel_crtc); | |
14201 | } | |
14202 | ||
14203 | static void intel_finish_crtc_commit(struct drm_crtc *crtc, | |
14204 | struct drm_crtc_state *old_crtc_state) | |
14205 | { | |
14206 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
14207 | ||
14208 | intel_pipe_update_end(intel_crtc, NULL); | |
14209 | } | |
14210 | ||
14211 | /** | |
14212 | * intel_plane_destroy - destroy a plane | |
14213 | * @plane: plane to destroy | |
14214 | * | |
14215 | * Common destruction function for all types of planes (primary, cursor, | |
14216 | * sprite). | |
14217 | */ | |
14218 | void intel_plane_destroy(struct drm_plane *plane) | |
14219 | { | |
14220 | if (!plane) | |
14221 | return; | |
14222 | ||
14223 | drm_plane_cleanup(plane); | |
14224 | kfree(to_intel_plane(plane)); | |
14225 | } | |
14226 | ||
14227 | const struct drm_plane_funcs intel_plane_funcs = { | |
14228 | .update_plane = drm_atomic_helper_update_plane, | |
14229 | .disable_plane = drm_atomic_helper_disable_plane, | |
14230 | .destroy = intel_plane_destroy, | |
14231 | .set_property = drm_atomic_helper_plane_set_property, | |
14232 | .atomic_get_property = intel_plane_atomic_get_property, | |
14233 | .atomic_set_property = intel_plane_atomic_set_property, | |
14234 | .atomic_duplicate_state = intel_plane_duplicate_state, | |
14235 | .atomic_destroy_state = intel_plane_destroy_state, | |
14236 | ||
14237 | }; | |
14238 | ||
14239 | static struct drm_plane *intel_primary_plane_create(struct drm_device *dev, | |
14240 | int pipe) | |
14241 | { | |
14242 | struct intel_plane *primary = NULL; | |
14243 | struct intel_plane_state *state = NULL; | |
14244 | const uint32_t *intel_primary_formats; | |
14245 | unsigned int num_formats; | |
14246 | int ret; | |
14247 | ||
14248 | primary = kzalloc(sizeof(*primary), GFP_KERNEL); | |
14249 | if (!primary) | |
14250 | goto fail; | |
14251 | ||
14252 | state = intel_create_plane_state(&primary->base); | |
14253 | if (!state) | |
14254 | goto fail; | |
14255 | primary->base.state = &state->base; | |
14256 | ||
14257 | primary->can_scale = false; | |
14258 | primary->max_downscale = 1; | |
14259 | if (INTEL_INFO(dev)->gen >= 9) { | |
14260 | primary->can_scale = true; | |
14261 | state->scaler_id = -1; | |
14262 | } | |
14263 | primary->pipe = pipe; | |
14264 | primary->plane = pipe; | |
14265 | primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe); | |
14266 | primary->check_plane = intel_check_primary_plane; | |
14267 | if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) | |
14268 | primary->plane = !pipe; | |
14269 | ||
14270 | if (INTEL_INFO(dev)->gen >= 9) { | |
14271 | intel_primary_formats = skl_primary_formats; | |
14272 | num_formats = ARRAY_SIZE(skl_primary_formats); | |
14273 | ||
14274 | primary->update_plane = skylake_update_primary_plane; | |
14275 | primary->disable_plane = skylake_disable_primary_plane; | |
14276 | } else if (HAS_PCH_SPLIT(dev)) { | |
14277 | intel_primary_formats = i965_primary_formats; | |
14278 | num_formats = ARRAY_SIZE(i965_primary_formats); | |
14279 | ||
14280 | primary->update_plane = ironlake_update_primary_plane; | |
14281 | primary->disable_plane = i9xx_disable_primary_plane; | |
14282 | } else if (INTEL_INFO(dev)->gen >= 4) { | |
14283 | intel_primary_formats = i965_primary_formats; | |
14284 | num_formats = ARRAY_SIZE(i965_primary_formats); | |
14285 | ||
14286 | primary->update_plane = i9xx_update_primary_plane; | |
14287 | primary->disable_plane = i9xx_disable_primary_plane; | |
14288 | } else { | |
14289 | intel_primary_formats = i8xx_primary_formats; | |
14290 | num_formats = ARRAY_SIZE(i8xx_primary_formats); | |
14291 | ||
14292 | primary->update_plane = i9xx_update_primary_plane; | |
14293 | primary->disable_plane = i9xx_disable_primary_plane; | |
14294 | } | |
14295 | ||
14296 | if (INTEL_INFO(dev)->gen >= 9) | |
14297 | ret = drm_universal_plane_init(dev, &primary->base, 0, | |
14298 | &intel_plane_funcs, | |
14299 | intel_primary_formats, num_formats, | |
14300 | DRM_PLANE_TYPE_PRIMARY, | |
14301 | "plane 1%c", pipe_name(pipe)); | |
14302 | else if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) | |
14303 | ret = drm_universal_plane_init(dev, &primary->base, 0, | |
14304 | &intel_plane_funcs, | |
14305 | intel_primary_formats, num_formats, | |
14306 | DRM_PLANE_TYPE_PRIMARY, | |
14307 | "primary %c", pipe_name(pipe)); | |
14308 | else | |
14309 | ret = drm_universal_plane_init(dev, &primary->base, 0, | |
14310 | &intel_plane_funcs, | |
14311 | intel_primary_formats, num_formats, | |
14312 | DRM_PLANE_TYPE_PRIMARY, | |
14313 | "plane %c", plane_name(primary->plane)); | |
14314 | if (ret) | |
14315 | goto fail; | |
14316 | ||
14317 | if (INTEL_INFO(dev)->gen >= 4) | |
14318 | intel_create_rotation_property(dev, primary); | |
14319 | ||
14320 | drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs); | |
14321 | ||
14322 | return &primary->base; | |
14323 | ||
14324 | fail: | |
14325 | kfree(state); | |
14326 | kfree(primary); | |
14327 | ||
14328 | return NULL; | |
14329 | } | |
14330 | ||
14331 | void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane) | |
14332 | { | |
14333 | if (!dev->mode_config.rotation_property) { | |
14334 | unsigned long flags = BIT(DRM_ROTATE_0) | | |
14335 | BIT(DRM_ROTATE_180); | |
14336 | ||
14337 | if (INTEL_INFO(dev)->gen >= 9) | |
14338 | flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270); | |
14339 | ||
14340 | dev->mode_config.rotation_property = | |
14341 | drm_mode_create_rotation_property(dev, flags); | |
14342 | } | |
14343 | if (dev->mode_config.rotation_property) | |
14344 | drm_object_attach_property(&plane->base.base, | |
14345 | dev->mode_config.rotation_property, | |
14346 | plane->base.state->rotation); | |
14347 | } | |
14348 | ||
14349 | static int | |
14350 | intel_check_cursor_plane(struct drm_plane *plane, | |
14351 | struct intel_crtc_state *crtc_state, | |
14352 | struct intel_plane_state *state) | |
14353 | { | |
14354 | struct drm_crtc *crtc = crtc_state->base.crtc; | |
14355 | struct drm_framebuffer *fb = state->base.fb; | |
14356 | struct drm_i915_gem_object *obj = intel_fb_obj(fb); | |
14357 | enum pipe pipe = to_intel_plane(plane)->pipe; | |
14358 | unsigned stride; | |
14359 | int ret; | |
14360 | ||
14361 | ret = drm_plane_helper_check_update(plane, crtc, fb, &state->src, | |
14362 | &state->dst, &state->clip, | |
14363 | DRM_PLANE_HELPER_NO_SCALING, | |
14364 | DRM_PLANE_HELPER_NO_SCALING, | |
14365 | true, true, &state->visible); | |
14366 | if (ret) | |
14367 | return ret; | |
14368 | ||
14369 | /* if we want to turn off the cursor ignore width and height */ | |
14370 | if (!obj) | |
14371 | return 0; | |
14372 | ||
14373 | /* Check for which cursor types we support */ | |
14374 | if (!cursor_size_ok(plane->dev, state->base.crtc_w, state->base.crtc_h)) { | |
14375 | DRM_DEBUG("Cursor dimension %dx%d not supported\n", | |
14376 | state->base.crtc_w, state->base.crtc_h); | |
14377 | return -EINVAL; | |
14378 | } | |
14379 | ||
14380 | stride = roundup_pow_of_two(state->base.crtc_w) * 4; | |
14381 | if (obj->base.size < stride * state->base.crtc_h) { | |
14382 | DRM_DEBUG_KMS("buffer is too small\n"); | |
14383 | return -ENOMEM; | |
14384 | } | |
14385 | ||
14386 | if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) { | |
14387 | DRM_DEBUG_KMS("cursor cannot be tiled\n"); | |
14388 | return -EINVAL; | |
14389 | } | |
14390 | ||
14391 | /* | |
14392 | * There's something wrong with the cursor on CHV pipe C. | |
14393 | * If it straddles the left edge of the screen then | |
14394 | * moving it away from the edge or disabling it often | |
14395 | * results in a pipe underrun, and often that can lead to | |
14396 | * dead pipe (constant underrun reported, and it scans | |
14397 | * out just a solid color). To recover from that, the | |
14398 | * display power well must be turned off and on again. | |
14399 | * Refuse the put the cursor into that compromised position. | |
14400 | */ | |
14401 | if (IS_CHERRYVIEW(plane->dev) && pipe == PIPE_C && | |
14402 | state->visible && state->base.crtc_x < 0) { | |
14403 | DRM_DEBUG_KMS("CHV cursor C not allowed to straddle the left screen edge\n"); | |
14404 | return -EINVAL; | |
14405 | } | |
14406 | ||
14407 | return 0; | |
14408 | } | |
14409 | ||
14410 | static void | |
14411 | intel_disable_cursor_plane(struct drm_plane *plane, | |
14412 | struct drm_crtc *crtc) | |
14413 | { | |
14414 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
14415 | ||
14416 | intel_crtc->cursor_addr = 0; | |
14417 | intel_crtc_update_cursor(crtc, NULL); | |
14418 | } | |
14419 | ||
14420 | static void | |
14421 | intel_update_cursor_plane(struct drm_plane *plane, | |
14422 | const struct intel_crtc_state *crtc_state, | |
14423 | const struct intel_plane_state *state) | |
14424 | { | |
14425 | struct drm_crtc *crtc = crtc_state->base.crtc; | |
14426 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
14427 | struct drm_device *dev = plane->dev; | |
14428 | struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb); | |
14429 | uint32_t addr; | |
14430 | ||
14431 | if (!obj) | |
14432 | addr = 0; | |
14433 | else if (!INTEL_INFO(dev)->cursor_needs_physical) | |
14434 | addr = i915_gem_obj_ggtt_offset(obj); | |
14435 | else | |
14436 | addr = obj->phys_handle->busaddr; | |
14437 | ||
14438 | intel_crtc->cursor_addr = addr; | |
14439 | intel_crtc_update_cursor(crtc, state); | |
14440 | } | |
14441 | ||
14442 | static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev, | |
14443 | int pipe) | |
14444 | { | |
14445 | struct intel_plane *cursor = NULL; | |
14446 | struct intel_plane_state *state = NULL; | |
14447 | int ret; | |
14448 | ||
14449 | cursor = kzalloc(sizeof(*cursor), GFP_KERNEL); | |
14450 | if (!cursor) | |
14451 | goto fail; | |
14452 | ||
14453 | state = intel_create_plane_state(&cursor->base); | |
14454 | if (!state) | |
14455 | goto fail; | |
14456 | cursor->base.state = &state->base; | |
14457 | ||
14458 | cursor->can_scale = false; | |
14459 | cursor->max_downscale = 1; | |
14460 | cursor->pipe = pipe; | |
14461 | cursor->plane = pipe; | |
14462 | cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe); | |
14463 | cursor->check_plane = intel_check_cursor_plane; | |
14464 | cursor->update_plane = intel_update_cursor_plane; | |
14465 | cursor->disable_plane = intel_disable_cursor_plane; | |
14466 | ||
14467 | ret = drm_universal_plane_init(dev, &cursor->base, 0, | |
14468 | &intel_plane_funcs, | |
14469 | intel_cursor_formats, | |
14470 | ARRAY_SIZE(intel_cursor_formats), | |
14471 | DRM_PLANE_TYPE_CURSOR, | |
14472 | "cursor %c", pipe_name(pipe)); | |
14473 | if (ret) | |
14474 | goto fail; | |
14475 | ||
14476 | if (INTEL_INFO(dev)->gen >= 4) { | |
14477 | if (!dev->mode_config.rotation_property) | |
14478 | dev->mode_config.rotation_property = | |
14479 | drm_mode_create_rotation_property(dev, | |
14480 | BIT(DRM_ROTATE_0) | | |
14481 | BIT(DRM_ROTATE_180)); | |
14482 | if (dev->mode_config.rotation_property) | |
14483 | drm_object_attach_property(&cursor->base.base, | |
14484 | dev->mode_config.rotation_property, | |
14485 | state->base.rotation); | |
14486 | } | |
14487 | ||
14488 | if (INTEL_INFO(dev)->gen >=9) | |
14489 | state->scaler_id = -1; | |
14490 | ||
14491 | drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs); | |
14492 | ||
14493 | return &cursor->base; | |
14494 | ||
14495 | fail: | |
14496 | kfree(state); | |
14497 | kfree(cursor); | |
14498 | ||
14499 | return NULL; | |
14500 | } | |
14501 | ||
14502 | static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc, | |
14503 | struct intel_crtc_state *crtc_state) | |
14504 | { | |
14505 | int i; | |
14506 | struct intel_scaler *intel_scaler; | |
14507 | struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state; | |
14508 | ||
14509 | for (i = 0; i < intel_crtc->num_scalers; i++) { | |
14510 | intel_scaler = &scaler_state->scalers[i]; | |
14511 | intel_scaler->in_use = 0; | |
14512 | intel_scaler->mode = PS_SCALER_MODE_DYN; | |
14513 | } | |
14514 | ||
14515 | scaler_state->scaler_id = -1; | |
14516 | } | |
14517 | ||
14518 | static void intel_crtc_init(struct drm_device *dev, int pipe) | |
14519 | { | |
14520 | struct drm_i915_private *dev_priv = dev->dev_private; | |
14521 | struct intel_crtc *intel_crtc; | |
14522 | struct intel_crtc_state *crtc_state = NULL; | |
14523 | struct drm_plane *primary = NULL; | |
14524 | struct drm_plane *cursor = NULL; | |
14525 | int ret; | |
14526 | ||
14527 | intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL); | |
14528 | if (intel_crtc == NULL) | |
14529 | return; | |
14530 | ||
14531 | crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL); | |
14532 | if (!crtc_state) | |
14533 | goto fail; | |
14534 | intel_crtc->config = crtc_state; | |
14535 | intel_crtc->base.state = &crtc_state->base; | |
14536 | crtc_state->base.crtc = &intel_crtc->base; | |
14537 | ||
14538 | /* initialize shared scalers */ | |
14539 | if (INTEL_INFO(dev)->gen >= 9) { | |
14540 | if (pipe == PIPE_C) | |
14541 | intel_crtc->num_scalers = 1; | |
14542 | else | |
14543 | intel_crtc->num_scalers = SKL_NUM_SCALERS; | |
14544 | ||
14545 | skl_init_scalers(dev, intel_crtc, crtc_state); | |
14546 | } | |
14547 | ||
14548 | primary = intel_primary_plane_create(dev, pipe); | |
14549 | if (!primary) | |
14550 | goto fail; | |
14551 | ||
14552 | cursor = intel_cursor_plane_create(dev, pipe); | |
14553 | if (!cursor) | |
14554 | goto fail; | |
14555 | ||
14556 | ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary, | |
14557 | cursor, &intel_crtc_funcs, | |
14558 | "pipe %c", pipe_name(pipe)); | |
14559 | if (ret) | |
14560 | goto fail; | |
14561 | ||
14562 | /* | |
14563 | * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port | |
14564 | * is hooked to pipe B. Hence we want plane A feeding pipe B. | |
14565 | */ | |
14566 | intel_crtc->pipe = pipe; | |
14567 | intel_crtc->plane = pipe; | |
14568 | if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) { | |
14569 | DRM_DEBUG_KMS("swapping pipes & planes for FBC\n"); | |
14570 | intel_crtc->plane = !pipe; | |
14571 | } | |
14572 | ||
14573 | intel_crtc->cursor_base = ~0; | |
14574 | intel_crtc->cursor_cntl = ~0; | |
14575 | intel_crtc->cursor_size = ~0; | |
14576 | ||
14577 | intel_crtc->wm.cxsr_allowed = true; | |
14578 | ||
14579 | BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) || | |
14580 | dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL); | |
14581 | dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base; | |
14582 | dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base; | |
14583 | ||
14584 | drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs); | |
14585 | ||
14586 | intel_color_init(&intel_crtc->base); | |
14587 | ||
14588 | WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe); | |
14589 | return; | |
14590 | ||
14591 | fail: | |
14592 | intel_plane_destroy(primary); | |
14593 | intel_plane_destroy(cursor); | |
14594 | kfree(crtc_state); | |
14595 | kfree(intel_crtc); | |
14596 | } | |
14597 | ||
14598 | enum pipe intel_get_pipe_from_connector(struct intel_connector *connector) | |
14599 | { | |
14600 | struct drm_encoder *encoder = connector->base.encoder; | |
14601 | struct drm_device *dev = connector->base.dev; | |
14602 | ||
14603 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
14604 | ||
14605 | if (!encoder || WARN_ON(!encoder->crtc)) | |
14606 | return INVALID_PIPE; | |
14607 | ||
14608 | return to_intel_crtc(encoder->crtc)->pipe; | |
14609 | } | |
14610 | ||
14611 | int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, | |
14612 | struct drm_file *file) | |
14613 | { | |
14614 | struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data; | |
14615 | struct drm_crtc *drmmode_crtc; | |
14616 | struct intel_crtc *crtc; | |
14617 | ||
14618 | drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id); | |
14619 | ||
14620 | if (!drmmode_crtc) { | |
14621 | DRM_ERROR("no such CRTC id\n"); | |
14622 | return -ENOENT; | |
14623 | } | |
14624 | ||
14625 | crtc = to_intel_crtc(drmmode_crtc); | |
14626 | pipe_from_crtc_id->pipe = crtc->pipe; | |
14627 | ||
14628 | return 0; | |
14629 | } | |
14630 | ||
14631 | static int intel_encoder_clones(struct intel_encoder *encoder) | |
14632 | { | |
14633 | struct drm_device *dev = encoder->base.dev; | |
14634 | struct intel_encoder *source_encoder; | |
14635 | int index_mask = 0; | |
14636 | int entry = 0; | |
14637 | ||
14638 | for_each_intel_encoder(dev, source_encoder) { | |
14639 | if (encoders_cloneable(encoder, source_encoder)) | |
14640 | index_mask |= (1 << entry); | |
14641 | ||
14642 | entry++; | |
14643 | } | |
14644 | ||
14645 | return index_mask; | |
14646 | } | |
14647 | ||
14648 | static bool has_edp_a(struct drm_device *dev) | |
14649 | { | |
14650 | struct drm_i915_private *dev_priv = dev->dev_private; | |
14651 | ||
14652 | if (!IS_MOBILE(dev)) | |
14653 | return false; | |
14654 | ||
14655 | if ((I915_READ(DP_A) & DP_DETECTED) == 0) | |
14656 | return false; | |
14657 | ||
14658 | if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE)) | |
14659 | return false; | |
14660 | ||
14661 | return true; | |
14662 | } | |
14663 | ||
14664 | static bool intel_crt_present(struct drm_device *dev) | |
14665 | { | |
14666 | struct drm_i915_private *dev_priv = dev->dev_private; | |
14667 | ||
14668 | if (INTEL_INFO(dev)->gen >= 9) | |
14669 | return false; | |
14670 | ||
14671 | if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev)) | |
14672 | return false; | |
14673 | ||
14674 | if (IS_CHERRYVIEW(dev)) | |
14675 | return false; | |
14676 | ||
14677 | if (HAS_PCH_LPT_H(dev) && I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED) | |
14678 | return false; | |
14679 | ||
14680 | /* DDI E can't be used if DDI A requires 4 lanes */ | |
14681 | if (HAS_DDI(dev) && I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES) | |
14682 | return false; | |
14683 | ||
14684 | if (!dev_priv->vbt.int_crt_support) | |
14685 | return false; | |
14686 | ||
14687 | return true; | |
14688 | } | |
14689 | ||
14690 | static void intel_setup_outputs(struct drm_device *dev) | |
14691 | { | |
14692 | struct drm_i915_private *dev_priv = dev->dev_private; | |
14693 | struct intel_encoder *encoder; | |
14694 | bool dpd_is_edp = false; | |
14695 | ||
14696 | intel_lvds_init(dev); | |
14697 | ||
14698 | if (intel_crt_present(dev)) | |
14699 | intel_crt_init(dev); | |
14700 | ||
14701 | if (IS_BROXTON(dev)) { | |
14702 | /* | |
14703 | * FIXME: Broxton doesn't support port detection via the | |
14704 | * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to | |
14705 | * detect the ports. | |
14706 | */ | |
14707 | intel_ddi_init(dev, PORT_A); | |
14708 | intel_ddi_init(dev, PORT_B); | |
14709 | intel_ddi_init(dev, PORT_C); | |
14710 | ||
14711 | intel_dsi_init(dev); | |
14712 | } else if (HAS_DDI(dev)) { | |
14713 | int found; | |
14714 | ||
14715 | /* | |
14716 | * Haswell uses DDI functions to detect digital outputs. | |
14717 | * On SKL pre-D0 the strap isn't connected, so we assume | |
14718 | * it's there. | |
14719 | */ | |
14720 | found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED; | |
14721 | /* WaIgnoreDDIAStrap: skl */ | |
14722 | if (found || IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) | |
14723 | intel_ddi_init(dev, PORT_A); | |
14724 | ||
14725 | /* DDI B, C and D detection is indicated by the SFUSE_STRAP | |
14726 | * register */ | |
14727 | found = I915_READ(SFUSE_STRAP); | |
14728 | ||
14729 | if (found & SFUSE_STRAP_DDIB_DETECTED) | |
14730 | intel_ddi_init(dev, PORT_B); | |
14731 | if (found & SFUSE_STRAP_DDIC_DETECTED) | |
14732 | intel_ddi_init(dev, PORT_C); | |
14733 | if (found & SFUSE_STRAP_DDID_DETECTED) | |
14734 | intel_ddi_init(dev, PORT_D); | |
14735 | /* | |
14736 | * On SKL we don't have a way to detect DDI-E so we rely on VBT. | |
14737 | */ | |
14738 | if ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) && | |
14739 | (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp || | |
14740 | dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi || | |
14741 | dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi)) | |
14742 | intel_ddi_init(dev, PORT_E); | |
14743 | ||
14744 | } else if (HAS_PCH_SPLIT(dev)) { | |
14745 | int found; | |
14746 | dpd_is_edp = intel_dp_is_edp(dev, PORT_D); | |
14747 | ||
14748 | if (has_edp_a(dev)) | |
14749 | intel_dp_init(dev, DP_A, PORT_A); | |
14750 | ||
14751 | if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) { | |
14752 | /* PCH SDVOB multiplex with HDMIB */ | |
14753 | found = intel_sdvo_init(dev, PCH_SDVOB, PORT_B); | |
14754 | if (!found) | |
14755 | intel_hdmi_init(dev, PCH_HDMIB, PORT_B); | |
14756 | if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED)) | |
14757 | intel_dp_init(dev, PCH_DP_B, PORT_B); | |
14758 | } | |
14759 | ||
14760 | if (I915_READ(PCH_HDMIC) & SDVO_DETECTED) | |
14761 | intel_hdmi_init(dev, PCH_HDMIC, PORT_C); | |
14762 | ||
14763 | if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED) | |
14764 | intel_hdmi_init(dev, PCH_HDMID, PORT_D); | |
14765 | ||
14766 | if (I915_READ(PCH_DP_C) & DP_DETECTED) | |
14767 | intel_dp_init(dev, PCH_DP_C, PORT_C); | |
14768 | ||
14769 | if (I915_READ(PCH_DP_D) & DP_DETECTED) | |
14770 | intel_dp_init(dev, PCH_DP_D, PORT_D); | |
14771 | } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
14772 | bool has_edp, has_port; | |
14773 | ||
14774 | /* | |
14775 | * The DP_DETECTED bit is the latched state of the DDC | |
14776 | * SDA pin at boot. However since eDP doesn't require DDC | |
14777 | * (no way to plug in a DP->HDMI dongle) the DDC pins for | |
14778 | * eDP ports may have been muxed to an alternate function. | |
14779 | * Thus we can't rely on the DP_DETECTED bit alone to detect | |
14780 | * eDP ports. Consult the VBT as well as DP_DETECTED to | |
14781 | * detect eDP ports. | |
14782 | * | |
14783 | * Sadly the straps seem to be missing sometimes even for HDMI | |
14784 | * ports (eg. on Voyo V3 - CHT x7-Z8700), so check both strap | |
14785 | * and VBT for the presence of the port. Additionally we can't | |
14786 | * trust the port type the VBT declares as we've seen at least | |
14787 | * HDMI ports that the VBT claim are DP or eDP. | |
14788 | */ | |
14789 | has_edp = intel_dp_is_edp(dev, PORT_B); | |
14790 | has_port = intel_bios_is_port_present(dev_priv, PORT_B); | |
14791 | if (I915_READ(VLV_DP_B) & DP_DETECTED || has_port) | |
14792 | has_edp &= intel_dp_init(dev, VLV_DP_B, PORT_B); | |
14793 | if ((I915_READ(VLV_HDMIB) & SDVO_DETECTED || has_port) && !has_edp) | |
14794 | intel_hdmi_init(dev, VLV_HDMIB, PORT_B); | |
14795 | ||
14796 | has_edp = intel_dp_is_edp(dev, PORT_C); | |
14797 | has_port = intel_bios_is_port_present(dev_priv, PORT_C); | |
14798 | if (I915_READ(VLV_DP_C) & DP_DETECTED || has_port) | |
14799 | has_edp &= intel_dp_init(dev, VLV_DP_C, PORT_C); | |
14800 | if ((I915_READ(VLV_HDMIC) & SDVO_DETECTED || has_port) && !has_edp) | |
14801 | intel_hdmi_init(dev, VLV_HDMIC, PORT_C); | |
14802 | ||
14803 | if (IS_CHERRYVIEW(dev)) { | |
14804 | /* | |
14805 | * eDP not supported on port D, | |
14806 | * so no need to worry about it | |
14807 | */ | |
14808 | has_port = intel_bios_is_port_present(dev_priv, PORT_D); | |
14809 | if (I915_READ(CHV_DP_D) & DP_DETECTED || has_port) | |
14810 | intel_dp_init(dev, CHV_DP_D, PORT_D); | |
14811 | if (I915_READ(CHV_HDMID) & SDVO_DETECTED || has_port) | |
14812 | intel_hdmi_init(dev, CHV_HDMID, PORT_D); | |
14813 | } | |
14814 | ||
14815 | intel_dsi_init(dev); | |
14816 | } else if (!IS_GEN2(dev) && !IS_PINEVIEW(dev)) { | |
14817 | bool found = false; | |
14818 | ||
14819 | if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) { | |
14820 | DRM_DEBUG_KMS("probing SDVOB\n"); | |
14821 | found = intel_sdvo_init(dev, GEN3_SDVOB, PORT_B); | |
14822 | if (!found && IS_G4X(dev)) { | |
14823 | DRM_DEBUG_KMS("probing HDMI on SDVOB\n"); | |
14824 | intel_hdmi_init(dev, GEN4_HDMIB, PORT_B); | |
14825 | } | |
14826 | ||
14827 | if (!found && IS_G4X(dev)) | |
14828 | intel_dp_init(dev, DP_B, PORT_B); | |
14829 | } | |
14830 | ||
14831 | /* Before G4X SDVOC doesn't have its own detect register */ | |
14832 | ||
14833 | if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) { | |
14834 | DRM_DEBUG_KMS("probing SDVOC\n"); | |
14835 | found = intel_sdvo_init(dev, GEN3_SDVOC, PORT_C); | |
14836 | } | |
14837 | ||
14838 | if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) { | |
14839 | ||
14840 | if (IS_G4X(dev)) { | |
14841 | DRM_DEBUG_KMS("probing HDMI on SDVOC\n"); | |
14842 | intel_hdmi_init(dev, GEN4_HDMIC, PORT_C); | |
14843 | } | |
14844 | if (IS_G4X(dev)) | |
14845 | intel_dp_init(dev, DP_C, PORT_C); | |
14846 | } | |
14847 | ||
14848 | if (IS_G4X(dev) && | |
14849 | (I915_READ(DP_D) & DP_DETECTED)) | |
14850 | intel_dp_init(dev, DP_D, PORT_D); | |
14851 | } else if (IS_GEN2(dev)) | |
14852 | intel_dvo_init(dev); | |
14853 | ||
14854 | if (SUPPORTS_TV(dev)) | |
14855 | intel_tv_init(dev); | |
14856 | ||
14857 | intel_psr_init(dev); | |
14858 | ||
14859 | for_each_intel_encoder(dev, encoder) { | |
14860 | encoder->base.possible_crtcs = encoder->crtc_mask; | |
14861 | encoder->base.possible_clones = | |
14862 | intel_encoder_clones(encoder); | |
14863 | } | |
14864 | ||
14865 | intel_init_pch_refclk(dev); | |
14866 | ||
14867 | drm_helper_move_panel_connectors_to_head(dev); | |
14868 | } | |
14869 | ||
14870 | static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
14871 | { | |
14872 | struct drm_device *dev = fb->dev; | |
14873 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
14874 | ||
14875 | drm_framebuffer_cleanup(fb); | |
14876 | mutex_lock(&dev->struct_mutex); | |
14877 | WARN_ON(!intel_fb->obj->framebuffer_references--); | |
14878 | drm_gem_object_unreference(&intel_fb->obj->base); | |
14879 | mutex_unlock(&dev->struct_mutex); | |
14880 | kfree(intel_fb); | |
14881 | } | |
14882 | ||
14883 | static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb, | |
14884 | struct drm_file *file, | |
14885 | unsigned int *handle) | |
14886 | { | |
14887 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
14888 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
14889 | ||
14890 | if (obj->userptr.mm) { | |
14891 | DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n"); | |
14892 | return -EINVAL; | |
14893 | } | |
14894 | ||
14895 | return drm_gem_handle_create(file, &obj->base, handle); | |
14896 | } | |
14897 | ||
14898 | static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb, | |
14899 | struct drm_file *file, | |
14900 | unsigned flags, unsigned color, | |
14901 | struct drm_clip_rect *clips, | |
14902 | unsigned num_clips) | |
14903 | { | |
14904 | struct drm_device *dev = fb->dev; | |
14905 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
14906 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
14907 | ||
14908 | mutex_lock(&dev->struct_mutex); | |
14909 | intel_fb_obj_flush(obj, false, ORIGIN_DIRTYFB); | |
14910 | mutex_unlock(&dev->struct_mutex); | |
14911 | ||
14912 | return 0; | |
14913 | } | |
14914 | ||
14915 | static const struct drm_framebuffer_funcs intel_fb_funcs = { | |
14916 | .destroy = intel_user_framebuffer_destroy, | |
14917 | .create_handle = intel_user_framebuffer_create_handle, | |
14918 | .dirty = intel_user_framebuffer_dirty, | |
14919 | }; | |
14920 | ||
14921 | static | |
14922 | u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier, | |
14923 | uint32_t pixel_format) | |
14924 | { | |
14925 | u32 gen = INTEL_INFO(dev)->gen; | |
14926 | ||
14927 | if (gen >= 9) { | |
14928 | int cpp = drm_format_plane_cpp(pixel_format, 0); | |
14929 | ||
14930 | /* "The stride in bytes must not exceed the of the size of 8K | |
14931 | * pixels and 32K bytes." | |
14932 | */ | |
14933 | return min(8192 * cpp, 32768); | |
14934 | } else if (gen >= 5 && !IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) { | |
14935 | return 32*1024; | |
14936 | } else if (gen >= 4) { | |
14937 | if (fb_modifier == I915_FORMAT_MOD_X_TILED) | |
14938 | return 16*1024; | |
14939 | else | |
14940 | return 32*1024; | |
14941 | } else if (gen >= 3) { | |
14942 | if (fb_modifier == I915_FORMAT_MOD_X_TILED) | |
14943 | return 8*1024; | |
14944 | else | |
14945 | return 16*1024; | |
14946 | } else { | |
14947 | /* XXX DSPC is limited to 4k tiled */ | |
14948 | return 8*1024; | |
14949 | } | |
14950 | } | |
14951 | ||
14952 | static int intel_framebuffer_init(struct drm_device *dev, | |
14953 | struct intel_framebuffer *intel_fb, | |
14954 | struct drm_mode_fb_cmd2 *mode_cmd, | |
14955 | struct drm_i915_gem_object *obj) | |
14956 | { | |
14957 | struct drm_i915_private *dev_priv = to_i915(dev); | |
14958 | unsigned int aligned_height; | |
14959 | int ret; | |
14960 | u32 pitch_limit, stride_alignment; | |
14961 | ||
14962 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
14963 | ||
14964 | if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) { | |
14965 | /* Enforce that fb modifier and tiling mode match, but only for | |
14966 | * X-tiled. This is needed for FBC. */ | |
14967 | if (!!(obj->tiling_mode == I915_TILING_X) != | |
14968 | !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) { | |
14969 | DRM_DEBUG("tiling_mode doesn't match fb modifier\n"); | |
14970 | return -EINVAL; | |
14971 | } | |
14972 | } else { | |
14973 | if (obj->tiling_mode == I915_TILING_X) | |
14974 | mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED; | |
14975 | else if (obj->tiling_mode == I915_TILING_Y) { | |
14976 | DRM_DEBUG("No Y tiling for legacy addfb\n"); | |
14977 | return -EINVAL; | |
14978 | } | |
14979 | } | |
14980 | ||
14981 | /* Passed in modifier sanity checking. */ | |
14982 | switch (mode_cmd->modifier[0]) { | |
14983 | case I915_FORMAT_MOD_Y_TILED: | |
14984 | case I915_FORMAT_MOD_Yf_TILED: | |
14985 | if (INTEL_INFO(dev)->gen < 9) { | |
14986 | DRM_DEBUG("Unsupported tiling 0x%llx!\n", | |
14987 | mode_cmd->modifier[0]); | |
14988 | return -EINVAL; | |
14989 | } | |
14990 | case DRM_FORMAT_MOD_NONE: | |
14991 | case I915_FORMAT_MOD_X_TILED: | |
14992 | break; | |
14993 | default: | |
14994 | DRM_DEBUG("Unsupported fb modifier 0x%llx!\n", | |
14995 | mode_cmd->modifier[0]); | |
14996 | return -EINVAL; | |
14997 | } | |
14998 | ||
14999 | stride_alignment = intel_fb_stride_alignment(dev_priv, | |
15000 | mode_cmd->modifier[0], | |
15001 | mode_cmd->pixel_format); | |
15002 | if (mode_cmd->pitches[0] & (stride_alignment - 1)) { | |
15003 | DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n", | |
15004 | mode_cmd->pitches[0], stride_alignment); | |
15005 | return -EINVAL; | |
15006 | } | |
15007 | ||
15008 | pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0], | |
15009 | mode_cmd->pixel_format); | |
15010 | if (mode_cmd->pitches[0] > pitch_limit) { | |
15011 | DRM_DEBUG("%s pitch (%u) must be at less than %d\n", | |
15012 | mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ? | |
15013 | "tiled" : "linear", | |
15014 | mode_cmd->pitches[0], pitch_limit); | |
15015 | return -EINVAL; | |
15016 | } | |
15017 | ||
15018 | if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED && | |
15019 | mode_cmd->pitches[0] != obj->stride) { | |
15020 | DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n", | |
15021 | mode_cmd->pitches[0], obj->stride); | |
15022 | return -EINVAL; | |
15023 | } | |
15024 | ||
15025 | /* Reject formats not supported by any plane early. */ | |
15026 | switch (mode_cmd->pixel_format) { | |
15027 | case DRM_FORMAT_C8: | |
15028 | case DRM_FORMAT_RGB565: | |
15029 | case DRM_FORMAT_XRGB8888: | |
15030 | case DRM_FORMAT_ARGB8888: | |
15031 | break; | |
15032 | case DRM_FORMAT_XRGB1555: | |
15033 | if (INTEL_INFO(dev)->gen > 3) { | |
15034 | DRM_DEBUG("unsupported pixel format: %s\n", | |
15035 | drm_get_format_name(mode_cmd->pixel_format)); | |
15036 | return -EINVAL; | |
15037 | } | |
15038 | break; | |
15039 | case DRM_FORMAT_ABGR8888: | |
15040 | if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && | |
15041 | INTEL_INFO(dev)->gen < 9) { | |
15042 | DRM_DEBUG("unsupported pixel format: %s\n", | |
15043 | drm_get_format_name(mode_cmd->pixel_format)); | |
15044 | return -EINVAL; | |
15045 | } | |
15046 | break; | |
15047 | case DRM_FORMAT_XBGR8888: | |
15048 | case DRM_FORMAT_XRGB2101010: | |
15049 | case DRM_FORMAT_XBGR2101010: | |
15050 | if (INTEL_INFO(dev)->gen < 4) { | |
15051 | DRM_DEBUG("unsupported pixel format: %s\n", | |
15052 | drm_get_format_name(mode_cmd->pixel_format)); | |
15053 | return -EINVAL; | |
15054 | } | |
15055 | break; | |
15056 | case DRM_FORMAT_ABGR2101010: | |
15057 | if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) { | |
15058 | DRM_DEBUG("unsupported pixel format: %s\n", | |
15059 | drm_get_format_name(mode_cmd->pixel_format)); | |
15060 | return -EINVAL; | |
15061 | } | |
15062 | break; | |
15063 | case DRM_FORMAT_YUYV: | |
15064 | case DRM_FORMAT_UYVY: | |
15065 | case DRM_FORMAT_YVYU: | |
15066 | case DRM_FORMAT_VYUY: | |
15067 | if (INTEL_INFO(dev)->gen < 5) { | |
15068 | DRM_DEBUG("unsupported pixel format: %s\n", | |
15069 | drm_get_format_name(mode_cmd->pixel_format)); | |
15070 | return -EINVAL; | |
15071 | } | |
15072 | break; | |
15073 | default: | |
15074 | DRM_DEBUG("unsupported pixel format: %s\n", | |
15075 | drm_get_format_name(mode_cmd->pixel_format)); | |
15076 | return -EINVAL; | |
15077 | } | |
15078 | ||
15079 | /* FIXME need to adjust LINOFF/TILEOFF accordingly. */ | |
15080 | if (mode_cmd->offsets[0] != 0) | |
15081 | return -EINVAL; | |
15082 | ||
15083 | aligned_height = intel_fb_align_height(dev, mode_cmd->height, | |
15084 | mode_cmd->pixel_format, | |
15085 | mode_cmd->modifier[0]); | |
15086 | /* FIXME drm helper for size checks (especially planar formats)? */ | |
15087 | if (obj->base.size < aligned_height * mode_cmd->pitches[0]) | |
15088 | return -EINVAL; | |
15089 | ||
15090 | drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd); | |
15091 | intel_fb->obj = obj; | |
15092 | ||
15093 | intel_fill_fb_info(dev_priv, &intel_fb->base); | |
15094 | ||
15095 | ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs); | |
15096 | if (ret) { | |
15097 | DRM_ERROR("framebuffer init failed %d\n", ret); | |
15098 | return ret; | |
15099 | } | |
15100 | ||
15101 | intel_fb->obj->framebuffer_references++; | |
15102 | ||
15103 | return 0; | |
15104 | } | |
15105 | ||
15106 | static struct drm_framebuffer * | |
15107 | intel_user_framebuffer_create(struct drm_device *dev, | |
15108 | struct drm_file *filp, | |
15109 | const struct drm_mode_fb_cmd2 *user_mode_cmd) | |
15110 | { | |
15111 | struct drm_framebuffer *fb; | |
15112 | struct drm_i915_gem_object *obj; | |
15113 | struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd; | |
15114 | ||
15115 | obj = to_intel_bo(drm_gem_object_lookup(filp, mode_cmd.handles[0])); | |
15116 | if (&obj->base == NULL) | |
15117 | return ERR_PTR(-ENOENT); | |
15118 | ||
15119 | fb = intel_framebuffer_create(dev, &mode_cmd, obj); | |
15120 | if (IS_ERR(fb)) | |
15121 | drm_gem_object_unreference_unlocked(&obj->base); | |
15122 | ||
15123 | return fb; | |
15124 | } | |
15125 | ||
15126 | #ifndef CONFIG_DRM_FBDEV_EMULATION | |
15127 | static inline void intel_fbdev_output_poll_changed(struct drm_device *dev) | |
15128 | { | |
15129 | } | |
15130 | #endif | |
15131 | ||
15132 | static const struct drm_mode_config_funcs intel_mode_funcs = { | |
15133 | .fb_create = intel_user_framebuffer_create, | |
15134 | .output_poll_changed = intel_fbdev_output_poll_changed, | |
15135 | .atomic_check = intel_atomic_check, | |
15136 | .atomic_commit = intel_atomic_commit, | |
15137 | .atomic_state_alloc = intel_atomic_state_alloc, | |
15138 | .atomic_state_clear = intel_atomic_state_clear, | |
15139 | }; | |
15140 | ||
15141 | /** | |
15142 | * intel_init_display_hooks - initialize the display modesetting hooks | |
15143 | * @dev_priv: device private | |
15144 | */ | |
15145 | void intel_init_display_hooks(struct drm_i915_private *dev_priv) | |
15146 | { | |
15147 | if (INTEL_INFO(dev_priv)->gen >= 9) { | |
15148 | dev_priv->display.get_pipe_config = haswell_get_pipe_config; | |
15149 | dev_priv->display.get_initial_plane_config = | |
15150 | skylake_get_initial_plane_config; | |
15151 | dev_priv->display.crtc_compute_clock = | |
15152 | haswell_crtc_compute_clock; | |
15153 | dev_priv->display.crtc_enable = haswell_crtc_enable; | |
15154 | dev_priv->display.crtc_disable = haswell_crtc_disable; | |
15155 | } else if (HAS_DDI(dev_priv)) { | |
15156 | dev_priv->display.get_pipe_config = haswell_get_pipe_config; | |
15157 | dev_priv->display.get_initial_plane_config = | |
15158 | ironlake_get_initial_plane_config; | |
15159 | dev_priv->display.crtc_compute_clock = | |
15160 | haswell_crtc_compute_clock; | |
15161 | dev_priv->display.crtc_enable = haswell_crtc_enable; | |
15162 | dev_priv->display.crtc_disable = haswell_crtc_disable; | |
15163 | } else if (HAS_PCH_SPLIT(dev_priv)) { | |
15164 | dev_priv->display.get_pipe_config = ironlake_get_pipe_config; | |
15165 | dev_priv->display.get_initial_plane_config = | |
15166 | ironlake_get_initial_plane_config; | |
15167 | dev_priv->display.crtc_compute_clock = | |
15168 | ironlake_crtc_compute_clock; | |
15169 | dev_priv->display.crtc_enable = ironlake_crtc_enable; | |
15170 | dev_priv->display.crtc_disable = ironlake_crtc_disable; | |
15171 | } else if (IS_CHERRYVIEW(dev_priv)) { | |
15172 | dev_priv->display.get_pipe_config = i9xx_get_pipe_config; | |
15173 | dev_priv->display.get_initial_plane_config = | |
15174 | i9xx_get_initial_plane_config; | |
15175 | dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock; | |
15176 | dev_priv->display.crtc_enable = valleyview_crtc_enable; | |
15177 | dev_priv->display.crtc_disable = i9xx_crtc_disable; | |
15178 | } else if (IS_VALLEYVIEW(dev_priv)) { | |
15179 | dev_priv->display.get_pipe_config = i9xx_get_pipe_config; | |
15180 | dev_priv->display.get_initial_plane_config = | |
15181 | i9xx_get_initial_plane_config; | |
15182 | dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock; | |
15183 | dev_priv->display.crtc_enable = valleyview_crtc_enable; | |
15184 | dev_priv->display.crtc_disable = i9xx_crtc_disable; | |
15185 | } else if (IS_G4X(dev_priv)) { | |
15186 | dev_priv->display.get_pipe_config = i9xx_get_pipe_config; | |
15187 | dev_priv->display.get_initial_plane_config = | |
15188 | i9xx_get_initial_plane_config; | |
15189 | dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock; | |
15190 | dev_priv->display.crtc_enable = i9xx_crtc_enable; | |
15191 | dev_priv->display.crtc_disable = i9xx_crtc_disable; | |
15192 | } else if (IS_PINEVIEW(dev_priv)) { | |
15193 | dev_priv->display.get_pipe_config = i9xx_get_pipe_config; | |
15194 | dev_priv->display.get_initial_plane_config = | |
15195 | i9xx_get_initial_plane_config; | |
15196 | dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock; | |
15197 | dev_priv->display.crtc_enable = i9xx_crtc_enable; | |
15198 | dev_priv->display.crtc_disable = i9xx_crtc_disable; | |
15199 | } else if (!IS_GEN2(dev_priv)) { | |
15200 | dev_priv->display.get_pipe_config = i9xx_get_pipe_config; | |
15201 | dev_priv->display.get_initial_plane_config = | |
15202 | i9xx_get_initial_plane_config; | |
15203 | dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock; | |
15204 | dev_priv->display.crtc_enable = i9xx_crtc_enable; | |
15205 | dev_priv->display.crtc_disable = i9xx_crtc_disable; | |
15206 | } else { | |
15207 | dev_priv->display.get_pipe_config = i9xx_get_pipe_config; | |
15208 | dev_priv->display.get_initial_plane_config = | |
15209 | i9xx_get_initial_plane_config; | |
15210 | dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock; | |
15211 | dev_priv->display.crtc_enable = i9xx_crtc_enable; | |
15212 | dev_priv->display.crtc_disable = i9xx_crtc_disable; | |
15213 | } | |
15214 | ||
15215 | /* Returns the core display clock speed */ | |
15216 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) | |
15217 | dev_priv->display.get_display_clock_speed = | |
15218 | skylake_get_display_clock_speed; | |
15219 | else if (IS_BROXTON(dev_priv)) | |
15220 | dev_priv->display.get_display_clock_speed = | |
15221 | broxton_get_display_clock_speed; | |
15222 | else if (IS_BROADWELL(dev_priv)) | |
15223 | dev_priv->display.get_display_clock_speed = | |
15224 | broadwell_get_display_clock_speed; | |
15225 | else if (IS_HASWELL(dev_priv)) | |
15226 | dev_priv->display.get_display_clock_speed = | |
15227 | haswell_get_display_clock_speed; | |
15228 | else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
15229 | dev_priv->display.get_display_clock_speed = | |
15230 | valleyview_get_display_clock_speed; | |
15231 | else if (IS_GEN5(dev_priv)) | |
15232 | dev_priv->display.get_display_clock_speed = | |
15233 | ilk_get_display_clock_speed; | |
15234 | else if (IS_I945G(dev_priv) || IS_BROADWATER(dev_priv) || | |
15235 | IS_GEN6(dev_priv) || IS_IVYBRIDGE(dev_priv)) | |
15236 | dev_priv->display.get_display_clock_speed = | |
15237 | i945_get_display_clock_speed; | |
15238 | else if (IS_GM45(dev_priv)) | |
15239 | dev_priv->display.get_display_clock_speed = | |
15240 | gm45_get_display_clock_speed; | |
15241 | else if (IS_CRESTLINE(dev_priv)) | |
15242 | dev_priv->display.get_display_clock_speed = | |
15243 | i965gm_get_display_clock_speed; | |
15244 | else if (IS_PINEVIEW(dev_priv)) | |
15245 | dev_priv->display.get_display_clock_speed = | |
15246 | pnv_get_display_clock_speed; | |
15247 | else if (IS_G33(dev_priv) || IS_G4X(dev_priv)) | |
15248 | dev_priv->display.get_display_clock_speed = | |
15249 | g33_get_display_clock_speed; | |
15250 | else if (IS_I915G(dev_priv)) | |
15251 | dev_priv->display.get_display_clock_speed = | |
15252 | i915_get_display_clock_speed; | |
15253 | else if (IS_I945GM(dev_priv) || IS_845G(dev_priv)) | |
15254 | dev_priv->display.get_display_clock_speed = | |
15255 | i9xx_misc_get_display_clock_speed; | |
15256 | else if (IS_I915GM(dev_priv)) | |
15257 | dev_priv->display.get_display_clock_speed = | |
15258 | i915gm_get_display_clock_speed; | |
15259 | else if (IS_I865G(dev_priv)) | |
15260 | dev_priv->display.get_display_clock_speed = | |
15261 | i865_get_display_clock_speed; | |
15262 | else if (IS_I85X(dev_priv)) | |
15263 | dev_priv->display.get_display_clock_speed = | |
15264 | i85x_get_display_clock_speed; | |
15265 | else { /* 830 */ | |
15266 | WARN(!IS_I830(dev_priv), "Unknown platform. Assuming 133 MHz CDCLK\n"); | |
15267 | dev_priv->display.get_display_clock_speed = | |
15268 | i830_get_display_clock_speed; | |
15269 | } | |
15270 | ||
15271 | if (IS_GEN5(dev_priv)) { | |
15272 | dev_priv->display.fdi_link_train = ironlake_fdi_link_train; | |
15273 | } else if (IS_GEN6(dev_priv)) { | |
15274 | dev_priv->display.fdi_link_train = gen6_fdi_link_train; | |
15275 | } else if (IS_IVYBRIDGE(dev_priv)) { | |
15276 | /* FIXME: detect B0+ stepping and use auto training */ | |
15277 | dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train; | |
15278 | } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { | |
15279 | dev_priv->display.fdi_link_train = hsw_fdi_link_train; | |
15280 | } | |
15281 | ||
15282 | if (IS_BROADWELL(dev_priv)) { | |
15283 | dev_priv->display.modeset_commit_cdclk = | |
15284 | broadwell_modeset_commit_cdclk; | |
15285 | dev_priv->display.modeset_calc_cdclk = | |
15286 | broadwell_modeset_calc_cdclk; | |
15287 | } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { | |
15288 | dev_priv->display.modeset_commit_cdclk = | |
15289 | valleyview_modeset_commit_cdclk; | |
15290 | dev_priv->display.modeset_calc_cdclk = | |
15291 | valleyview_modeset_calc_cdclk; | |
15292 | } else if (IS_BROXTON(dev_priv)) { | |
15293 | dev_priv->display.modeset_commit_cdclk = | |
15294 | bxt_modeset_commit_cdclk; | |
15295 | dev_priv->display.modeset_calc_cdclk = | |
15296 | bxt_modeset_calc_cdclk; | |
15297 | } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { | |
15298 | dev_priv->display.modeset_commit_cdclk = | |
15299 | skl_modeset_commit_cdclk; | |
15300 | dev_priv->display.modeset_calc_cdclk = | |
15301 | skl_modeset_calc_cdclk; | |
15302 | } | |
15303 | ||
15304 | switch (INTEL_INFO(dev_priv)->gen) { | |
15305 | case 2: | |
15306 | dev_priv->display.queue_flip = intel_gen2_queue_flip; | |
15307 | break; | |
15308 | ||
15309 | case 3: | |
15310 | dev_priv->display.queue_flip = intel_gen3_queue_flip; | |
15311 | break; | |
15312 | ||
15313 | case 4: | |
15314 | case 5: | |
15315 | dev_priv->display.queue_flip = intel_gen4_queue_flip; | |
15316 | break; | |
15317 | ||
15318 | case 6: | |
15319 | dev_priv->display.queue_flip = intel_gen6_queue_flip; | |
15320 | break; | |
15321 | case 7: | |
15322 | case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */ | |
15323 | dev_priv->display.queue_flip = intel_gen7_queue_flip; | |
15324 | break; | |
15325 | case 9: | |
15326 | /* Drop through - unsupported since execlist only. */ | |
15327 | default: | |
15328 | /* Default just returns -ENODEV to indicate unsupported */ | |
15329 | dev_priv->display.queue_flip = intel_default_queue_flip; | |
15330 | } | |
15331 | } | |
15332 | ||
15333 | /* | |
15334 | * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend, | |
15335 | * resume, or other times. This quirk makes sure that's the case for | |
15336 | * affected systems. | |
15337 | */ | |
15338 | static void quirk_pipea_force(struct drm_device *dev) | |
15339 | { | |
15340 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15341 | ||
15342 | dev_priv->quirks |= QUIRK_PIPEA_FORCE; | |
15343 | DRM_INFO("applying pipe a force quirk\n"); | |
15344 | } | |
15345 | ||
15346 | static void quirk_pipeb_force(struct drm_device *dev) | |
15347 | { | |
15348 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15349 | ||
15350 | dev_priv->quirks |= QUIRK_PIPEB_FORCE; | |
15351 | DRM_INFO("applying pipe b force quirk\n"); | |
15352 | } | |
15353 | ||
15354 | /* | |
15355 | * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason | |
15356 | */ | |
15357 | static void quirk_ssc_force_disable(struct drm_device *dev) | |
15358 | { | |
15359 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15360 | dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE; | |
15361 | DRM_INFO("applying lvds SSC disable quirk\n"); | |
15362 | } | |
15363 | ||
15364 | /* | |
15365 | * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight | |
15366 | * brightness value | |
15367 | */ | |
15368 | static void quirk_invert_brightness(struct drm_device *dev) | |
15369 | { | |
15370 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15371 | dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS; | |
15372 | DRM_INFO("applying inverted panel brightness quirk\n"); | |
15373 | } | |
15374 | ||
15375 | /* Some VBT's incorrectly indicate no backlight is present */ | |
15376 | static void quirk_backlight_present(struct drm_device *dev) | |
15377 | { | |
15378 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15379 | dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT; | |
15380 | DRM_INFO("applying backlight present quirk\n"); | |
15381 | } | |
15382 | ||
15383 | struct intel_quirk { | |
15384 | int device; | |
15385 | int subsystem_vendor; | |
15386 | int subsystem_device; | |
15387 | void (*hook)(struct drm_device *dev); | |
15388 | }; | |
15389 | ||
15390 | /* For systems that don't have a meaningful PCI subdevice/subvendor ID */ | |
15391 | struct intel_dmi_quirk { | |
15392 | void (*hook)(struct drm_device *dev); | |
15393 | const struct dmi_system_id (*dmi_id_list)[]; | |
15394 | }; | |
15395 | ||
15396 | static int intel_dmi_reverse_brightness(const struct dmi_system_id *id) | |
15397 | { | |
15398 | DRM_INFO("Backlight polarity reversed on %s\n", id->ident); | |
15399 | return 1; | |
15400 | } | |
15401 | ||
15402 | static const struct intel_dmi_quirk intel_dmi_quirks[] = { | |
15403 | { | |
15404 | .dmi_id_list = &(const struct dmi_system_id[]) { | |
15405 | { | |
15406 | .callback = intel_dmi_reverse_brightness, | |
15407 | .ident = "NCR Corporation", | |
15408 | .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"), | |
15409 | DMI_MATCH(DMI_PRODUCT_NAME, ""), | |
15410 | }, | |
15411 | }, | |
15412 | { } /* terminating entry */ | |
15413 | }, | |
15414 | .hook = quirk_invert_brightness, | |
15415 | }, | |
15416 | }; | |
15417 | ||
15418 | static struct intel_quirk intel_quirks[] = { | |
15419 | /* Toshiba Protege R-205, S-209 needs pipe A force quirk */ | |
15420 | { 0x2592, 0x1179, 0x0001, quirk_pipea_force }, | |
15421 | ||
15422 | /* ThinkPad T60 needs pipe A force quirk (bug #16494) */ | |
15423 | { 0x2782, 0x17aa, 0x201a, quirk_pipea_force }, | |
15424 | ||
15425 | /* 830 needs to leave pipe A & dpll A up */ | |
15426 | { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force }, | |
15427 | ||
15428 | /* 830 needs to leave pipe B & dpll B up */ | |
15429 | { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force }, | |
15430 | ||
15431 | /* Lenovo U160 cannot use SSC on LVDS */ | |
15432 | { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable }, | |
15433 | ||
15434 | /* Sony Vaio Y cannot use SSC on LVDS */ | |
15435 | { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable }, | |
15436 | ||
15437 | /* Acer Aspire 5734Z must invert backlight brightness */ | |
15438 | { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness }, | |
15439 | ||
15440 | /* Acer/eMachines G725 */ | |
15441 | { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness }, | |
15442 | ||
15443 | /* Acer/eMachines e725 */ | |
15444 | { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness }, | |
15445 | ||
15446 | /* Acer/Packard Bell NCL20 */ | |
15447 | { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness }, | |
15448 | ||
15449 | /* Acer Aspire 4736Z */ | |
15450 | { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness }, | |
15451 | ||
15452 | /* Acer Aspire 5336 */ | |
15453 | { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness }, | |
15454 | ||
15455 | /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */ | |
15456 | { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present }, | |
15457 | ||
15458 | /* Acer C720 Chromebook (Core i3 4005U) */ | |
15459 | { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present }, | |
15460 | ||
15461 | /* Apple Macbook 2,1 (Core 2 T7400) */ | |
15462 | { 0x27a2, 0x8086, 0x7270, quirk_backlight_present }, | |
15463 | ||
15464 | /* Apple Macbook 4,1 */ | |
15465 | { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present }, | |
15466 | ||
15467 | /* Toshiba CB35 Chromebook (Celeron 2955U) */ | |
15468 | { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present }, | |
15469 | ||
15470 | /* HP Chromebook 14 (Celeron 2955U) */ | |
15471 | { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present }, | |
15472 | ||
15473 | /* Dell Chromebook 11 */ | |
15474 | { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present }, | |
15475 | ||
15476 | /* Dell Chromebook 11 (2015 version) */ | |
15477 | { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present }, | |
15478 | }; | |
15479 | ||
15480 | static void intel_init_quirks(struct drm_device *dev) | |
15481 | { | |
15482 | struct pci_dev *d = dev->pdev; | |
15483 | int i; | |
15484 | ||
15485 | for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) { | |
15486 | struct intel_quirk *q = &intel_quirks[i]; | |
15487 | ||
15488 | if (d->device == q->device && | |
15489 | (d->subsystem_vendor == q->subsystem_vendor || | |
15490 | q->subsystem_vendor == PCI_ANY_ID) && | |
15491 | (d->subsystem_device == q->subsystem_device || | |
15492 | q->subsystem_device == PCI_ANY_ID)) | |
15493 | q->hook(dev); | |
15494 | } | |
15495 | for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) { | |
15496 | if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0) | |
15497 | intel_dmi_quirks[i].hook(dev); | |
15498 | } | |
15499 | } | |
15500 | ||
15501 | /* Disable the VGA plane that we never use */ | |
15502 | static void i915_disable_vga(struct drm_device *dev) | |
15503 | { | |
15504 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15505 | u8 sr1; | |
15506 | i915_reg_t vga_reg = i915_vgacntrl_reg(dev); | |
15507 | ||
15508 | /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */ | |
15509 | vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO); | |
15510 | outb(SR01, VGA_SR_INDEX); | |
15511 | sr1 = inb(VGA_SR_DATA); | |
15512 | outb(sr1 | 1<<5, VGA_SR_DATA); | |
15513 | vga_put(dev->pdev, VGA_RSRC_LEGACY_IO); | |
15514 | udelay(300); | |
15515 | ||
15516 | I915_WRITE(vga_reg, VGA_DISP_DISABLE); | |
15517 | POSTING_READ(vga_reg); | |
15518 | } | |
15519 | ||
15520 | void intel_modeset_init_hw(struct drm_device *dev) | |
15521 | { | |
15522 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15523 | ||
15524 | intel_update_cdclk(dev); | |
15525 | ||
15526 | dev_priv->atomic_cdclk_freq = dev_priv->cdclk_freq; | |
15527 | ||
15528 | intel_init_clock_gating(dev); | |
15529 | intel_enable_gt_powersave(dev_priv); | |
15530 | } | |
15531 | ||
15532 | /* | |
15533 | * Calculate what we think the watermarks should be for the state we've read | |
15534 | * out of the hardware and then immediately program those watermarks so that | |
15535 | * we ensure the hardware settings match our internal state. | |
15536 | * | |
15537 | * We can calculate what we think WM's should be by creating a duplicate of the | |
15538 | * current state (which was constructed during hardware readout) and running it | |
15539 | * through the atomic check code to calculate new watermark values in the | |
15540 | * state object. | |
15541 | */ | |
15542 | static void sanitize_watermarks(struct drm_device *dev) | |
15543 | { | |
15544 | struct drm_i915_private *dev_priv = to_i915(dev); | |
15545 | struct drm_atomic_state *state; | |
15546 | struct drm_crtc *crtc; | |
15547 | struct drm_crtc_state *cstate; | |
15548 | struct drm_modeset_acquire_ctx ctx; | |
15549 | int ret; | |
15550 | int i; | |
15551 | ||
15552 | /* Only supported on platforms that use atomic watermark design */ | |
15553 | if (!dev_priv->display.optimize_watermarks) | |
15554 | return; | |
15555 | ||
15556 | /* | |
15557 | * We need to hold connection_mutex before calling duplicate_state so | |
15558 | * that the connector loop is protected. | |
15559 | */ | |
15560 | drm_modeset_acquire_init(&ctx, 0); | |
15561 | retry: | |
15562 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
15563 | if (ret == -EDEADLK) { | |
15564 | drm_modeset_backoff(&ctx); | |
15565 | goto retry; | |
15566 | } else if (WARN_ON(ret)) { | |
15567 | goto fail; | |
15568 | } | |
15569 | ||
15570 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
15571 | if (WARN_ON(IS_ERR(state))) | |
15572 | goto fail; | |
15573 | ||
15574 | /* | |
15575 | * Hardware readout is the only time we don't want to calculate | |
15576 | * intermediate watermarks (since we don't trust the current | |
15577 | * watermarks). | |
15578 | */ | |
15579 | to_intel_atomic_state(state)->skip_intermediate_wm = true; | |
15580 | ||
15581 | ret = intel_atomic_check(dev, state); | |
15582 | if (ret) { | |
15583 | /* | |
15584 | * If we fail here, it means that the hardware appears to be | |
15585 | * programmed in a way that shouldn't be possible, given our | |
15586 | * understanding of watermark requirements. This might mean a | |
15587 | * mistake in the hardware readout code or a mistake in the | |
15588 | * watermark calculations for a given platform. Raise a WARN | |
15589 | * so that this is noticeable. | |
15590 | * | |
15591 | * If this actually happens, we'll have to just leave the | |
15592 | * BIOS-programmed watermarks untouched and hope for the best. | |
15593 | */ | |
15594 | WARN(true, "Could not determine valid watermarks for inherited state\n"); | |
15595 | goto fail; | |
15596 | } | |
15597 | ||
15598 | /* Write calculated watermark values back */ | |
15599 | for_each_crtc_in_state(state, crtc, cstate, i) { | |
15600 | struct intel_crtc_state *cs = to_intel_crtc_state(cstate); | |
15601 | ||
15602 | cs->wm.need_postvbl_update = true; | |
15603 | dev_priv->display.optimize_watermarks(cs); | |
15604 | } | |
15605 | ||
15606 | drm_atomic_state_free(state); | |
15607 | fail: | |
15608 | drm_modeset_drop_locks(&ctx); | |
15609 | drm_modeset_acquire_fini(&ctx); | |
15610 | } | |
15611 | ||
15612 | void intel_modeset_init(struct drm_device *dev) | |
15613 | { | |
15614 | struct drm_i915_private *dev_priv = to_i915(dev); | |
15615 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
15616 | int sprite, ret; | |
15617 | enum pipe pipe; | |
15618 | struct intel_crtc *crtc; | |
15619 | ||
15620 | drm_mode_config_init(dev); | |
15621 | ||
15622 | dev->mode_config.min_width = 0; | |
15623 | dev->mode_config.min_height = 0; | |
15624 | ||
15625 | dev->mode_config.preferred_depth = 24; | |
15626 | dev->mode_config.prefer_shadow = 1; | |
15627 | ||
15628 | dev->mode_config.allow_fb_modifiers = true; | |
15629 | ||
15630 | dev->mode_config.funcs = &intel_mode_funcs; | |
15631 | ||
15632 | intel_init_quirks(dev); | |
15633 | ||
15634 | intel_init_pm(dev); | |
15635 | ||
15636 | if (INTEL_INFO(dev)->num_pipes == 0) | |
15637 | return; | |
15638 | ||
15639 | /* | |
15640 | * There may be no VBT; and if the BIOS enabled SSC we can | |
15641 | * just keep using it to avoid unnecessary flicker. Whereas if the | |
15642 | * BIOS isn't using it, don't assume it will work even if the VBT | |
15643 | * indicates as much. | |
15644 | */ | |
15645 | if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { | |
15646 | bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) & | |
15647 | DREF_SSC1_ENABLE); | |
15648 | ||
15649 | if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) { | |
15650 | DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n", | |
15651 | bios_lvds_use_ssc ? "en" : "dis", | |
15652 | dev_priv->vbt.lvds_use_ssc ? "en" : "dis"); | |
15653 | dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc; | |
15654 | } | |
15655 | } | |
15656 | ||
15657 | if (IS_GEN2(dev)) { | |
15658 | dev->mode_config.max_width = 2048; | |
15659 | dev->mode_config.max_height = 2048; | |
15660 | } else if (IS_GEN3(dev)) { | |
15661 | dev->mode_config.max_width = 4096; | |
15662 | dev->mode_config.max_height = 4096; | |
15663 | } else { | |
15664 | dev->mode_config.max_width = 8192; | |
15665 | dev->mode_config.max_height = 8192; | |
15666 | } | |
15667 | ||
15668 | if (IS_845G(dev) || IS_I865G(dev)) { | |
15669 | dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512; | |
15670 | dev->mode_config.cursor_height = 1023; | |
15671 | } else if (IS_GEN2(dev)) { | |
15672 | dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH; | |
15673 | dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT; | |
15674 | } else { | |
15675 | dev->mode_config.cursor_width = MAX_CURSOR_WIDTH; | |
15676 | dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT; | |
15677 | } | |
15678 | ||
15679 | dev->mode_config.fb_base = ggtt->mappable_base; | |
15680 | ||
15681 | DRM_DEBUG_KMS("%d display pipe%s available.\n", | |
15682 | INTEL_INFO(dev)->num_pipes, | |
15683 | INTEL_INFO(dev)->num_pipes > 1 ? "s" : ""); | |
15684 | ||
15685 | for_each_pipe(dev_priv, pipe) { | |
15686 | intel_crtc_init(dev, pipe); | |
15687 | for_each_sprite(dev_priv, pipe, sprite) { | |
15688 | ret = intel_plane_init(dev, pipe, sprite); | |
15689 | if (ret) | |
15690 | DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n", | |
15691 | pipe_name(pipe), sprite_name(pipe, sprite), ret); | |
15692 | } | |
15693 | } | |
15694 | ||
15695 | intel_update_czclk(dev_priv); | |
15696 | intel_update_cdclk(dev); | |
15697 | ||
15698 | intel_shared_dpll_init(dev); | |
15699 | ||
15700 | if (dev_priv->max_cdclk_freq == 0) | |
15701 | intel_update_max_cdclk(dev); | |
15702 | ||
15703 | /* Just disable it once at startup */ | |
15704 | i915_disable_vga(dev); | |
15705 | intel_setup_outputs(dev); | |
15706 | ||
15707 | drm_modeset_lock_all(dev); | |
15708 | intel_modeset_setup_hw_state(dev); | |
15709 | drm_modeset_unlock_all(dev); | |
15710 | ||
15711 | for_each_intel_crtc(dev, crtc) { | |
15712 | struct intel_initial_plane_config plane_config = {}; | |
15713 | ||
15714 | if (!crtc->active) | |
15715 | continue; | |
15716 | ||
15717 | /* | |
15718 | * Note that reserving the BIOS fb up front prevents us | |
15719 | * from stuffing other stolen allocations like the ring | |
15720 | * on top. This prevents some ugliness at boot time, and | |
15721 | * can even allow for smooth boot transitions if the BIOS | |
15722 | * fb is large enough for the active pipe configuration. | |
15723 | */ | |
15724 | dev_priv->display.get_initial_plane_config(crtc, | |
15725 | &plane_config); | |
15726 | ||
15727 | /* | |
15728 | * If the fb is shared between multiple heads, we'll | |
15729 | * just get the first one. | |
15730 | */ | |
15731 | intel_find_initial_plane_obj(crtc, &plane_config); | |
15732 | } | |
15733 | ||
15734 | /* | |
15735 | * Make sure hardware watermarks really match the state we read out. | |
15736 | * Note that we need to do this after reconstructing the BIOS fb's | |
15737 | * since the watermark calculation done here will use pstate->fb. | |
15738 | */ | |
15739 | sanitize_watermarks(dev); | |
15740 | } | |
15741 | ||
15742 | static void intel_enable_pipe_a(struct drm_device *dev) | |
15743 | { | |
15744 | struct intel_connector *connector; | |
15745 | struct drm_connector *crt = NULL; | |
15746 | struct intel_load_detect_pipe load_detect_temp; | |
15747 | struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx; | |
15748 | ||
15749 | /* We can't just switch on the pipe A, we need to set things up with a | |
15750 | * proper mode and output configuration. As a gross hack, enable pipe A | |
15751 | * by enabling the load detect pipe once. */ | |
15752 | for_each_intel_connector(dev, connector) { | |
15753 | if (connector->encoder->type == INTEL_OUTPUT_ANALOG) { | |
15754 | crt = &connector->base; | |
15755 | break; | |
15756 | } | |
15757 | } | |
15758 | ||
15759 | if (!crt) | |
15760 | return; | |
15761 | ||
15762 | if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx)) | |
15763 | intel_release_load_detect_pipe(crt, &load_detect_temp, ctx); | |
15764 | } | |
15765 | ||
15766 | static bool | |
15767 | intel_check_plane_mapping(struct intel_crtc *crtc) | |
15768 | { | |
15769 | struct drm_device *dev = crtc->base.dev; | |
15770 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15771 | u32 val; | |
15772 | ||
15773 | if (INTEL_INFO(dev)->num_pipes == 1) | |
15774 | return true; | |
15775 | ||
15776 | val = I915_READ(DSPCNTR(!crtc->plane)); | |
15777 | ||
15778 | if ((val & DISPLAY_PLANE_ENABLE) && | |
15779 | (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe)) | |
15780 | return false; | |
15781 | ||
15782 | return true; | |
15783 | } | |
15784 | ||
15785 | static bool intel_crtc_has_encoders(struct intel_crtc *crtc) | |
15786 | { | |
15787 | struct drm_device *dev = crtc->base.dev; | |
15788 | struct intel_encoder *encoder; | |
15789 | ||
15790 | for_each_encoder_on_crtc(dev, &crtc->base, encoder) | |
15791 | return true; | |
15792 | ||
15793 | return false; | |
15794 | } | |
15795 | ||
15796 | static bool intel_encoder_has_connectors(struct intel_encoder *encoder) | |
15797 | { | |
15798 | struct drm_device *dev = encoder->base.dev; | |
15799 | struct intel_connector *connector; | |
15800 | ||
15801 | for_each_connector_on_encoder(dev, &encoder->base, connector) | |
15802 | return true; | |
15803 | ||
15804 | return false; | |
15805 | } | |
15806 | ||
15807 | static void intel_sanitize_crtc(struct intel_crtc *crtc) | |
15808 | { | |
15809 | struct drm_device *dev = crtc->base.dev; | |
15810 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15811 | enum transcoder cpu_transcoder = crtc->config->cpu_transcoder; | |
15812 | ||
15813 | /* Clear any frame start delays used for debugging left by the BIOS */ | |
15814 | if (!transcoder_is_dsi(cpu_transcoder)) { | |
15815 | i915_reg_t reg = PIPECONF(cpu_transcoder); | |
15816 | ||
15817 | I915_WRITE(reg, | |
15818 | I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK); | |
15819 | } | |
15820 | ||
15821 | /* restore vblank interrupts to correct state */ | |
15822 | drm_crtc_vblank_reset(&crtc->base); | |
15823 | if (crtc->active) { | |
15824 | struct intel_plane *plane; | |
15825 | ||
15826 | drm_crtc_vblank_on(&crtc->base); | |
15827 | ||
15828 | /* Disable everything but the primary plane */ | |
15829 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
15830 | if (plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
15831 | continue; | |
15832 | ||
15833 | plane->disable_plane(&plane->base, &crtc->base); | |
15834 | } | |
15835 | } | |
15836 | ||
15837 | /* We need to sanitize the plane -> pipe mapping first because this will | |
15838 | * disable the crtc (and hence change the state) if it is wrong. Note | |
15839 | * that gen4+ has a fixed plane -> pipe mapping. */ | |
15840 | if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) { | |
15841 | bool plane; | |
15842 | ||
15843 | DRM_DEBUG_KMS("[CRTC:%d:%s] wrong plane connection detected!\n", | |
15844 | crtc->base.base.id, crtc->base.name); | |
15845 | ||
15846 | /* Pipe has the wrong plane attached and the plane is active. | |
15847 | * Temporarily change the plane mapping and disable everything | |
15848 | * ... */ | |
15849 | plane = crtc->plane; | |
15850 | to_intel_plane_state(crtc->base.primary->state)->visible = true; | |
15851 | crtc->plane = !plane; | |
15852 | intel_crtc_disable_noatomic(&crtc->base); | |
15853 | crtc->plane = plane; | |
15854 | } | |
15855 | ||
15856 | if (dev_priv->quirks & QUIRK_PIPEA_FORCE && | |
15857 | crtc->pipe == PIPE_A && !crtc->active) { | |
15858 | /* BIOS forgot to enable pipe A, this mostly happens after | |
15859 | * resume. Force-enable the pipe to fix this, the update_dpms | |
15860 | * call below we restore the pipe to the right state, but leave | |
15861 | * the required bits on. */ | |
15862 | intel_enable_pipe_a(dev); | |
15863 | } | |
15864 | ||
15865 | /* Adjust the state of the output pipe according to whether we | |
15866 | * have active connectors/encoders. */ | |
15867 | if (crtc->active && !intel_crtc_has_encoders(crtc)) | |
15868 | intel_crtc_disable_noatomic(&crtc->base); | |
15869 | ||
15870 | if (crtc->active || HAS_GMCH_DISPLAY(dev)) { | |
15871 | /* | |
15872 | * We start out with underrun reporting disabled to avoid races. | |
15873 | * For correct bookkeeping mark this on active crtcs. | |
15874 | * | |
15875 | * Also on gmch platforms we dont have any hardware bits to | |
15876 | * disable the underrun reporting. Which means we need to start | |
15877 | * out with underrun reporting disabled also on inactive pipes, | |
15878 | * since otherwise we'll complain about the garbage we read when | |
15879 | * e.g. coming up after runtime pm. | |
15880 | * | |
15881 | * No protection against concurrent access is required - at | |
15882 | * worst a fifo underrun happens which also sets this to false. | |
15883 | */ | |
15884 | crtc->cpu_fifo_underrun_disabled = true; | |
15885 | crtc->pch_fifo_underrun_disabled = true; | |
15886 | } | |
15887 | } | |
15888 | ||
15889 | static void intel_sanitize_encoder(struct intel_encoder *encoder) | |
15890 | { | |
15891 | struct intel_connector *connector; | |
15892 | struct drm_device *dev = encoder->base.dev; | |
15893 | ||
15894 | /* We need to check both for a crtc link (meaning that the | |
15895 | * encoder is active and trying to read from a pipe) and the | |
15896 | * pipe itself being active. */ | |
15897 | bool has_active_crtc = encoder->base.crtc && | |
15898 | to_intel_crtc(encoder->base.crtc)->active; | |
15899 | ||
15900 | if (intel_encoder_has_connectors(encoder) && !has_active_crtc) { | |
15901 | DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n", | |
15902 | encoder->base.base.id, | |
15903 | encoder->base.name); | |
15904 | ||
15905 | /* Connector is active, but has no active pipe. This is | |
15906 | * fallout from our resume register restoring. Disable | |
15907 | * the encoder manually again. */ | |
15908 | if (encoder->base.crtc) { | |
15909 | DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n", | |
15910 | encoder->base.base.id, | |
15911 | encoder->base.name); | |
15912 | encoder->disable(encoder); | |
15913 | if (encoder->post_disable) | |
15914 | encoder->post_disable(encoder); | |
15915 | } | |
15916 | encoder->base.crtc = NULL; | |
15917 | ||
15918 | /* Inconsistent output/port/pipe state happens presumably due to | |
15919 | * a bug in one of the get_hw_state functions. Or someplace else | |
15920 | * in our code, like the register restore mess on resume. Clamp | |
15921 | * things to off as a safer default. */ | |
15922 | for_each_intel_connector(dev, connector) { | |
15923 | if (connector->encoder != encoder) | |
15924 | continue; | |
15925 | connector->base.dpms = DRM_MODE_DPMS_OFF; | |
15926 | connector->base.encoder = NULL; | |
15927 | } | |
15928 | } | |
15929 | /* Enabled encoders without active connectors will be fixed in | |
15930 | * the crtc fixup. */ | |
15931 | } | |
15932 | ||
15933 | void i915_redisable_vga_power_on(struct drm_device *dev) | |
15934 | { | |
15935 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15936 | i915_reg_t vga_reg = i915_vgacntrl_reg(dev); | |
15937 | ||
15938 | if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) { | |
15939 | DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n"); | |
15940 | i915_disable_vga(dev); | |
15941 | } | |
15942 | } | |
15943 | ||
15944 | void i915_redisable_vga(struct drm_device *dev) | |
15945 | { | |
15946 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15947 | ||
15948 | /* This function can be called both from intel_modeset_setup_hw_state or | |
15949 | * at a very early point in our resume sequence, where the power well | |
15950 | * structures are not yet restored. Since this function is at a very | |
15951 | * paranoid "someone might have enabled VGA while we were not looking" | |
15952 | * level, just check if the power well is enabled instead of trying to | |
15953 | * follow the "don't touch the power well if we don't need it" policy | |
15954 | * the rest of the driver uses. */ | |
15955 | if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_VGA)) | |
15956 | return; | |
15957 | ||
15958 | i915_redisable_vga_power_on(dev); | |
15959 | ||
15960 | intel_display_power_put(dev_priv, POWER_DOMAIN_VGA); | |
15961 | } | |
15962 | ||
15963 | static bool primary_get_hw_state(struct intel_plane *plane) | |
15964 | { | |
15965 | struct drm_i915_private *dev_priv = to_i915(plane->base.dev); | |
15966 | ||
15967 | return I915_READ(DSPCNTR(plane->plane)) & DISPLAY_PLANE_ENABLE; | |
15968 | } | |
15969 | ||
15970 | /* FIXME read out full plane state for all planes */ | |
15971 | static void readout_plane_state(struct intel_crtc *crtc) | |
15972 | { | |
15973 | struct drm_plane *primary = crtc->base.primary; | |
15974 | struct intel_plane_state *plane_state = | |
15975 | to_intel_plane_state(primary->state); | |
15976 | ||
15977 | plane_state->visible = crtc->active && | |
15978 | primary_get_hw_state(to_intel_plane(primary)); | |
15979 | ||
15980 | if (plane_state->visible) | |
15981 | crtc->base.state->plane_mask |= 1 << drm_plane_index(primary); | |
15982 | } | |
15983 | ||
15984 | static void intel_modeset_readout_hw_state(struct drm_device *dev) | |
15985 | { | |
15986 | struct drm_i915_private *dev_priv = dev->dev_private; | |
15987 | enum pipe pipe; | |
15988 | struct intel_crtc *crtc; | |
15989 | struct intel_encoder *encoder; | |
15990 | struct intel_connector *connector; | |
15991 | int i; | |
15992 | ||
15993 | dev_priv->active_crtcs = 0; | |
15994 | ||
15995 | for_each_intel_crtc(dev, crtc) { | |
15996 | struct intel_crtc_state *crtc_state = crtc->config; | |
15997 | int pixclk = 0; | |
15998 | ||
15999 | __drm_atomic_helper_crtc_destroy_state(&crtc_state->base); | |
16000 | memset(crtc_state, 0, sizeof(*crtc_state)); | |
16001 | crtc_state->base.crtc = &crtc->base; | |
16002 | ||
16003 | crtc_state->base.active = crtc_state->base.enable = | |
16004 | dev_priv->display.get_pipe_config(crtc, crtc_state); | |
16005 | ||
16006 | crtc->base.enabled = crtc_state->base.enable; | |
16007 | crtc->active = crtc_state->base.active; | |
16008 | ||
16009 | if (crtc_state->base.active) { | |
16010 | dev_priv->active_crtcs |= 1 << crtc->pipe; | |
16011 | ||
16012 | if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv)) | |
16013 | pixclk = ilk_pipe_pixel_rate(crtc_state); | |
16014 | else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
16015 | pixclk = crtc_state->base.adjusted_mode.crtc_clock; | |
16016 | else | |
16017 | WARN_ON(dev_priv->display.modeset_calc_cdclk); | |
16018 | ||
16019 | /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */ | |
16020 | if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled) | |
16021 | pixclk = DIV_ROUND_UP(pixclk * 100, 95); | |
16022 | } | |
16023 | ||
16024 | dev_priv->min_pixclk[crtc->pipe] = pixclk; | |
16025 | ||
16026 | readout_plane_state(crtc); | |
16027 | ||
16028 | DRM_DEBUG_KMS("[CRTC:%d:%s] hw state readout: %s\n", | |
16029 | crtc->base.base.id, crtc->base.name, | |
16030 | crtc->active ? "enabled" : "disabled"); | |
16031 | } | |
16032 | ||
16033 | for (i = 0; i < dev_priv->num_shared_dpll; i++) { | |
16034 | struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i]; | |
16035 | ||
16036 | pll->on = pll->funcs.get_hw_state(dev_priv, pll, | |
16037 | &pll->config.hw_state); | |
16038 | pll->config.crtc_mask = 0; | |
16039 | for_each_intel_crtc(dev, crtc) { | |
16040 | if (crtc->active && crtc->config->shared_dpll == pll) | |
16041 | pll->config.crtc_mask |= 1 << crtc->pipe; | |
16042 | } | |
16043 | pll->active_mask = pll->config.crtc_mask; | |
16044 | ||
16045 | DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n", | |
16046 | pll->name, pll->config.crtc_mask, pll->on); | |
16047 | } | |
16048 | ||
16049 | for_each_intel_encoder(dev, encoder) { | |
16050 | pipe = 0; | |
16051 | ||
16052 | if (encoder->get_hw_state(encoder, &pipe)) { | |
16053 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
16054 | encoder->base.crtc = &crtc->base; | |
16055 | encoder->get_config(encoder, crtc->config); | |
16056 | } else { | |
16057 | encoder->base.crtc = NULL; | |
16058 | } | |
16059 | ||
16060 | DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n", | |
16061 | encoder->base.base.id, | |
16062 | encoder->base.name, | |
16063 | encoder->base.crtc ? "enabled" : "disabled", | |
16064 | pipe_name(pipe)); | |
16065 | } | |
16066 | ||
16067 | for_each_intel_connector(dev, connector) { | |
16068 | if (connector->get_hw_state(connector)) { | |
16069 | connector->base.dpms = DRM_MODE_DPMS_ON; | |
16070 | ||
16071 | encoder = connector->encoder; | |
16072 | connector->base.encoder = &encoder->base; | |
16073 | ||
16074 | if (encoder->base.crtc && | |
16075 | encoder->base.crtc->state->active) { | |
16076 | /* | |
16077 | * This has to be done during hardware readout | |
16078 | * because anything calling .crtc_disable may | |
16079 | * rely on the connector_mask being accurate. | |
16080 | */ | |
16081 | encoder->base.crtc->state->connector_mask |= | |
16082 | 1 << drm_connector_index(&connector->base); | |
16083 | encoder->base.crtc->state->encoder_mask |= | |
16084 | 1 << drm_encoder_index(&encoder->base); | |
16085 | } | |
16086 | ||
16087 | } else { | |
16088 | connector->base.dpms = DRM_MODE_DPMS_OFF; | |
16089 | connector->base.encoder = NULL; | |
16090 | } | |
16091 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n", | |
16092 | connector->base.base.id, | |
16093 | connector->base.name, | |
16094 | connector->base.encoder ? "enabled" : "disabled"); | |
16095 | } | |
16096 | ||
16097 | for_each_intel_crtc(dev, crtc) { | |
16098 | crtc->base.hwmode = crtc->config->base.adjusted_mode; | |
16099 | ||
16100 | memset(&crtc->base.mode, 0, sizeof(crtc->base.mode)); | |
16101 | if (crtc->base.state->active) { | |
16102 | intel_mode_from_pipe_config(&crtc->base.mode, crtc->config); | |
16103 | intel_mode_from_pipe_config(&crtc->base.state->adjusted_mode, crtc->config); | |
16104 | WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode)); | |
16105 | ||
16106 | /* | |
16107 | * The initial mode needs to be set in order to keep | |
16108 | * the atomic core happy. It wants a valid mode if the | |
16109 | * crtc's enabled, so we do the above call. | |
16110 | * | |
16111 | * At this point some state updated by the connectors | |
16112 | * in their ->detect() callback has not run yet, so | |
16113 | * no recalculation can be done yet. | |
16114 | * | |
16115 | * Even if we could do a recalculation and modeset | |
16116 | * right now it would cause a double modeset if | |
16117 | * fbdev or userspace chooses a different initial mode. | |
16118 | * | |
16119 | * If that happens, someone indicated they wanted a | |
16120 | * mode change, which means it's safe to do a full | |
16121 | * recalculation. | |
16122 | */ | |
16123 | crtc->base.state->mode.private_flags = I915_MODE_FLAG_INHERITED; | |
16124 | ||
16125 | drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode); | |
16126 | update_scanline_offset(crtc); | |
16127 | } | |
16128 | ||
16129 | intel_pipe_config_sanity_check(dev_priv, crtc->config); | |
16130 | } | |
16131 | } | |
16132 | ||
16133 | /* Scan out the current hw modeset state, | |
16134 | * and sanitizes it to the current state | |
16135 | */ | |
16136 | static void | |
16137 | intel_modeset_setup_hw_state(struct drm_device *dev) | |
16138 | { | |
16139 | struct drm_i915_private *dev_priv = dev->dev_private; | |
16140 | enum pipe pipe; | |
16141 | struct intel_crtc *crtc; | |
16142 | struct intel_encoder *encoder; | |
16143 | int i; | |
16144 | ||
16145 | intel_modeset_readout_hw_state(dev); | |
16146 | ||
16147 | /* HW state is read out, now we need to sanitize this mess. */ | |
16148 | for_each_intel_encoder(dev, encoder) { | |
16149 | intel_sanitize_encoder(encoder); | |
16150 | } | |
16151 | ||
16152 | for_each_pipe(dev_priv, pipe) { | |
16153 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
16154 | intel_sanitize_crtc(crtc); | |
16155 | intel_dump_pipe_config(crtc, crtc->config, | |
16156 | "[setup_hw_state]"); | |
16157 | } | |
16158 | ||
16159 | intel_modeset_update_connector_atomic_state(dev); | |
16160 | ||
16161 | for (i = 0; i < dev_priv->num_shared_dpll; i++) { | |
16162 | struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i]; | |
16163 | ||
16164 | if (!pll->on || pll->active_mask) | |
16165 | continue; | |
16166 | ||
16167 | DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name); | |
16168 | ||
16169 | pll->funcs.disable(dev_priv, pll); | |
16170 | pll->on = false; | |
16171 | } | |
16172 | ||
16173 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) | |
16174 | vlv_wm_get_hw_state(dev); | |
16175 | else if (IS_GEN9(dev)) | |
16176 | skl_wm_get_hw_state(dev); | |
16177 | else if (HAS_PCH_SPLIT(dev)) | |
16178 | ilk_wm_get_hw_state(dev); | |
16179 | ||
16180 | for_each_intel_crtc(dev, crtc) { | |
16181 | unsigned long put_domains; | |
16182 | ||
16183 | put_domains = modeset_get_crtc_power_domains(&crtc->base, crtc->config); | |
16184 | if (WARN_ON(put_domains)) | |
16185 | modeset_put_power_domains(dev_priv, put_domains); | |
16186 | } | |
16187 | intel_display_set_init_power(dev_priv, false); | |
16188 | ||
16189 | intel_fbc_init_pipe_state(dev_priv); | |
16190 | } | |
16191 | ||
16192 | void intel_display_resume(struct drm_device *dev) | |
16193 | { | |
16194 | struct drm_i915_private *dev_priv = to_i915(dev); | |
16195 | struct drm_atomic_state *state = dev_priv->modeset_restore_state; | |
16196 | struct drm_modeset_acquire_ctx ctx; | |
16197 | int ret; | |
16198 | bool setup = false; | |
16199 | ||
16200 | dev_priv->modeset_restore_state = NULL; | |
16201 | ||
16202 | /* | |
16203 | * This is a cludge because with real atomic modeset mode_config.mutex | |
16204 | * won't be taken. Unfortunately some probed state like | |
16205 | * audio_codec_enable is still protected by mode_config.mutex, so lock | |
16206 | * it here for now. | |
16207 | */ | |
16208 | mutex_lock(&dev->mode_config.mutex); | |
16209 | drm_modeset_acquire_init(&ctx, 0); | |
16210 | ||
16211 | retry: | |
16212 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
16213 | ||
16214 | if (ret == 0 && !setup) { | |
16215 | setup = true; | |
16216 | ||
16217 | intel_modeset_setup_hw_state(dev); | |
16218 | i915_redisable_vga(dev); | |
16219 | } | |
16220 | ||
16221 | if (ret == 0 && state) { | |
16222 | struct drm_crtc_state *crtc_state; | |
16223 | struct drm_crtc *crtc; | |
16224 | int i; | |
16225 | ||
16226 | state->acquire_ctx = &ctx; | |
16227 | ||
16228 | /* ignore any reset values/BIOS leftovers in the WM registers */ | |
16229 | to_intel_atomic_state(state)->skip_intermediate_wm = true; | |
16230 | ||
16231 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
16232 | /* | |
16233 | * Force recalculation even if we restore | |
16234 | * current state. With fast modeset this may not result | |
16235 | * in a modeset when the state is compatible. | |
16236 | */ | |
16237 | crtc_state->mode_changed = true; | |
16238 | } | |
16239 | ||
16240 | ret = drm_atomic_commit(state); | |
16241 | } | |
16242 | ||
16243 | if (ret == -EDEADLK) { | |
16244 | drm_modeset_backoff(&ctx); | |
16245 | goto retry; | |
16246 | } | |
16247 | ||
16248 | drm_modeset_drop_locks(&ctx); | |
16249 | drm_modeset_acquire_fini(&ctx); | |
16250 | mutex_unlock(&dev->mode_config.mutex); | |
16251 | ||
16252 | if (ret) { | |
16253 | DRM_ERROR("Restoring old state failed with %i\n", ret); | |
16254 | drm_atomic_state_free(state); | |
16255 | } | |
16256 | } | |
16257 | ||
16258 | void intel_modeset_gem_init(struct drm_device *dev) | |
16259 | { | |
16260 | struct drm_i915_private *dev_priv = to_i915(dev); | |
16261 | struct drm_crtc *c; | |
16262 | struct drm_i915_gem_object *obj; | |
16263 | int ret; | |
16264 | ||
16265 | intel_init_gt_powersave(dev_priv); | |
16266 | ||
16267 | intel_modeset_init_hw(dev); | |
16268 | ||
16269 | intel_setup_overlay(dev_priv); | |
16270 | ||
16271 | /* | |
16272 | * Make sure any fbs we allocated at startup are properly | |
16273 | * pinned & fenced. When we do the allocation it's too early | |
16274 | * for this. | |
16275 | */ | |
16276 | for_each_crtc(dev, c) { | |
16277 | obj = intel_fb_obj(c->primary->fb); | |
16278 | if (obj == NULL) | |
16279 | continue; | |
16280 | ||
16281 | mutex_lock(&dev->struct_mutex); | |
16282 | ret = intel_pin_and_fence_fb_obj(c->primary->fb, | |
16283 | c->primary->state->rotation); | |
16284 | mutex_unlock(&dev->struct_mutex); | |
16285 | if (ret) { | |
16286 | DRM_ERROR("failed to pin boot fb on pipe %d\n", | |
16287 | to_intel_crtc(c)->pipe); | |
16288 | drm_framebuffer_unreference(c->primary->fb); | |
16289 | c->primary->fb = NULL; | |
16290 | c->primary->crtc = c->primary->state->crtc = NULL; | |
16291 | update_state_fb(c->primary); | |
16292 | c->state->plane_mask &= ~(1 << drm_plane_index(c->primary)); | |
16293 | } | |
16294 | } | |
16295 | ||
16296 | intel_backlight_register(dev); | |
16297 | } | |
16298 | ||
16299 | void intel_connector_unregister(struct intel_connector *intel_connector) | |
16300 | { | |
16301 | struct drm_connector *connector = &intel_connector->base; | |
16302 | ||
16303 | intel_panel_destroy_backlight(connector); | |
16304 | drm_connector_unregister(connector); | |
16305 | } | |
16306 | ||
16307 | void intel_modeset_cleanup(struct drm_device *dev) | |
16308 | { | |
16309 | struct drm_i915_private *dev_priv = dev->dev_private; | |
16310 | struct intel_connector *connector; | |
16311 | ||
16312 | intel_disable_gt_powersave(dev_priv); | |
16313 | ||
16314 | intel_backlight_unregister(dev); | |
16315 | ||
16316 | /* | |
16317 | * Interrupts and polling as the first thing to avoid creating havoc. | |
16318 | * Too much stuff here (turning of connectors, ...) would | |
16319 | * experience fancy races otherwise. | |
16320 | */ | |
16321 | intel_irq_uninstall(dev_priv); | |
16322 | ||
16323 | /* | |
16324 | * Due to the hpd irq storm handling the hotplug work can re-arm the | |
16325 | * poll handlers. Hence disable polling after hpd handling is shut down. | |
16326 | */ | |
16327 | drm_kms_helper_poll_fini(dev); | |
16328 | ||
16329 | intel_unregister_dsm_handler(); | |
16330 | ||
16331 | intel_fbc_global_disable(dev_priv); | |
16332 | ||
16333 | /* flush any delayed tasks or pending work */ | |
16334 | flush_scheduled_work(); | |
16335 | ||
16336 | /* destroy the backlight and sysfs files before encoders/connectors */ | |
16337 | for_each_intel_connector(dev, connector) | |
16338 | connector->unregister(connector); | |
16339 | ||
16340 | drm_mode_config_cleanup(dev); | |
16341 | ||
16342 | intel_cleanup_overlay(dev_priv); | |
16343 | ||
16344 | intel_cleanup_gt_powersave(dev_priv); | |
16345 | ||
16346 | intel_teardown_gmbus(dev); | |
16347 | } | |
16348 | ||
16349 | void intel_connector_attach_encoder(struct intel_connector *connector, | |
16350 | struct intel_encoder *encoder) | |
16351 | { | |
16352 | connector->encoder = encoder; | |
16353 | drm_mode_connector_attach_encoder(&connector->base, | |
16354 | &encoder->base); | |
16355 | } | |
16356 | ||
16357 | /* | |
16358 | * set vga decode state - true == enable VGA decode | |
16359 | */ | |
16360 | int intel_modeset_vga_set_state(struct drm_device *dev, bool state) | |
16361 | { | |
16362 | struct drm_i915_private *dev_priv = dev->dev_private; | |
16363 | unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL; | |
16364 | u16 gmch_ctrl; | |
16365 | ||
16366 | if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) { | |
16367 | DRM_ERROR("failed to read control word\n"); | |
16368 | return -EIO; | |
16369 | } | |
16370 | ||
16371 | if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state) | |
16372 | return 0; | |
16373 | ||
16374 | if (state) | |
16375 | gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE; | |
16376 | else | |
16377 | gmch_ctrl |= INTEL_GMCH_VGA_DISABLE; | |
16378 | ||
16379 | if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) { | |
16380 | DRM_ERROR("failed to write control word\n"); | |
16381 | return -EIO; | |
16382 | } | |
16383 | ||
16384 | return 0; | |
16385 | } | |
16386 | ||
16387 | struct intel_display_error_state { | |
16388 | ||
16389 | u32 power_well_driver; | |
16390 | ||
16391 | int num_transcoders; | |
16392 | ||
16393 | struct intel_cursor_error_state { | |
16394 | u32 control; | |
16395 | u32 position; | |
16396 | u32 base; | |
16397 | u32 size; | |
16398 | } cursor[I915_MAX_PIPES]; | |
16399 | ||
16400 | struct intel_pipe_error_state { | |
16401 | bool power_domain_on; | |
16402 | u32 source; | |
16403 | u32 stat; | |
16404 | } pipe[I915_MAX_PIPES]; | |
16405 | ||
16406 | struct intel_plane_error_state { | |
16407 | u32 control; | |
16408 | u32 stride; | |
16409 | u32 size; | |
16410 | u32 pos; | |
16411 | u32 addr; | |
16412 | u32 surface; | |
16413 | u32 tile_offset; | |
16414 | } plane[I915_MAX_PIPES]; | |
16415 | ||
16416 | struct intel_transcoder_error_state { | |
16417 | bool power_domain_on; | |
16418 | enum transcoder cpu_transcoder; | |
16419 | ||
16420 | u32 conf; | |
16421 | ||
16422 | u32 htotal; | |
16423 | u32 hblank; | |
16424 | u32 hsync; | |
16425 | u32 vtotal; | |
16426 | u32 vblank; | |
16427 | u32 vsync; | |
16428 | } transcoder[4]; | |
16429 | }; | |
16430 | ||
16431 | struct intel_display_error_state * | |
16432 | intel_display_capture_error_state(struct drm_i915_private *dev_priv) | |
16433 | { | |
16434 | struct intel_display_error_state *error; | |
16435 | int transcoders[] = { | |
16436 | TRANSCODER_A, | |
16437 | TRANSCODER_B, | |
16438 | TRANSCODER_C, | |
16439 | TRANSCODER_EDP, | |
16440 | }; | |
16441 | int i; | |
16442 | ||
16443 | if (INTEL_INFO(dev_priv)->num_pipes == 0) | |
16444 | return NULL; | |
16445 | ||
16446 | error = kzalloc(sizeof(*error), GFP_ATOMIC); | |
16447 | if (error == NULL) | |
16448 | return NULL; | |
16449 | ||
16450 | if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) | |
16451 | error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER); | |
16452 | ||
16453 | for_each_pipe(dev_priv, i) { | |
16454 | error->pipe[i].power_domain_on = | |
16455 | __intel_display_power_is_enabled(dev_priv, | |
16456 | POWER_DOMAIN_PIPE(i)); | |
16457 | if (!error->pipe[i].power_domain_on) | |
16458 | continue; | |
16459 | ||
16460 | error->cursor[i].control = I915_READ(CURCNTR(i)); | |
16461 | error->cursor[i].position = I915_READ(CURPOS(i)); | |
16462 | error->cursor[i].base = I915_READ(CURBASE(i)); | |
16463 | ||
16464 | error->plane[i].control = I915_READ(DSPCNTR(i)); | |
16465 | error->plane[i].stride = I915_READ(DSPSTRIDE(i)); | |
16466 | if (INTEL_GEN(dev_priv) <= 3) { | |
16467 | error->plane[i].size = I915_READ(DSPSIZE(i)); | |
16468 | error->plane[i].pos = I915_READ(DSPPOS(i)); | |
16469 | } | |
16470 | if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv)) | |
16471 | error->plane[i].addr = I915_READ(DSPADDR(i)); | |
16472 | if (INTEL_GEN(dev_priv) >= 4) { | |
16473 | error->plane[i].surface = I915_READ(DSPSURF(i)); | |
16474 | error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i)); | |
16475 | } | |
16476 | ||
16477 | error->pipe[i].source = I915_READ(PIPESRC(i)); | |
16478 | ||
16479 | if (HAS_GMCH_DISPLAY(dev_priv)) | |
16480 | error->pipe[i].stat = I915_READ(PIPESTAT(i)); | |
16481 | } | |
16482 | ||
16483 | /* Note: this does not include DSI transcoders. */ | |
16484 | error->num_transcoders = INTEL_INFO(dev_priv)->num_pipes; | |
16485 | if (HAS_DDI(dev_priv)) | |
16486 | error->num_transcoders++; /* Account for eDP. */ | |
16487 | ||
16488 | for (i = 0; i < error->num_transcoders; i++) { | |
16489 | enum transcoder cpu_transcoder = transcoders[i]; | |
16490 | ||
16491 | error->transcoder[i].power_domain_on = | |
16492 | __intel_display_power_is_enabled(dev_priv, | |
16493 | POWER_DOMAIN_TRANSCODER(cpu_transcoder)); | |
16494 | if (!error->transcoder[i].power_domain_on) | |
16495 | continue; | |
16496 | ||
16497 | error->transcoder[i].cpu_transcoder = cpu_transcoder; | |
16498 | ||
16499 | error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder)); | |
16500 | error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder)); | |
16501 | error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder)); | |
16502 | error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder)); | |
16503 | error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder)); | |
16504 | error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder)); | |
16505 | error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder)); | |
16506 | } | |
16507 | ||
16508 | return error; | |
16509 | } | |
16510 | ||
16511 | #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__) | |
16512 | ||
16513 | void | |
16514 | intel_display_print_error_state(struct drm_i915_error_state_buf *m, | |
16515 | struct drm_device *dev, | |
16516 | struct intel_display_error_state *error) | |
16517 | { | |
16518 | struct drm_i915_private *dev_priv = dev->dev_private; | |
16519 | int i; | |
16520 | ||
16521 | if (!error) | |
16522 | return; | |
16523 | ||
16524 | err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes); | |
16525 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
16526 | err_printf(m, "PWR_WELL_CTL2: %08x\n", | |
16527 | error->power_well_driver); | |
16528 | for_each_pipe(dev_priv, i) { | |
16529 | err_printf(m, "Pipe [%d]:\n", i); | |
16530 | err_printf(m, " Power: %s\n", | |
16531 | onoff(error->pipe[i].power_domain_on)); | |
16532 | err_printf(m, " SRC: %08x\n", error->pipe[i].source); | |
16533 | err_printf(m, " STAT: %08x\n", error->pipe[i].stat); | |
16534 | ||
16535 | err_printf(m, "Plane [%d]:\n", i); | |
16536 | err_printf(m, " CNTR: %08x\n", error->plane[i].control); | |
16537 | err_printf(m, " STRIDE: %08x\n", error->plane[i].stride); | |
16538 | if (INTEL_INFO(dev)->gen <= 3) { | |
16539 | err_printf(m, " SIZE: %08x\n", error->plane[i].size); | |
16540 | err_printf(m, " POS: %08x\n", error->plane[i].pos); | |
16541 | } | |
16542 | if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) | |
16543 | err_printf(m, " ADDR: %08x\n", error->plane[i].addr); | |
16544 | if (INTEL_INFO(dev)->gen >= 4) { | |
16545 | err_printf(m, " SURF: %08x\n", error->plane[i].surface); | |
16546 | err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset); | |
16547 | } | |
16548 | ||
16549 | err_printf(m, "Cursor [%d]:\n", i); | |
16550 | err_printf(m, " CNTR: %08x\n", error->cursor[i].control); | |
16551 | err_printf(m, " POS: %08x\n", error->cursor[i].position); | |
16552 | err_printf(m, " BASE: %08x\n", error->cursor[i].base); | |
16553 | } | |
16554 | ||
16555 | for (i = 0; i < error->num_transcoders; i++) { | |
16556 | err_printf(m, "CPU transcoder: %s\n", | |
16557 | transcoder_name(error->transcoder[i].cpu_transcoder)); | |
16558 | err_printf(m, " Power: %s\n", | |
16559 | onoff(error->transcoder[i].power_domain_on)); | |
16560 | err_printf(m, " CONF: %08x\n", error->transcoder[i].conf); | |
16561 | err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal); | |
16562 | err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank); | |
16563 | err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync); | |
16564 | err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal); | |
16565 | err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank); | |
16566 | err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync); | |
16567 | } | |
16568 | } |