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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 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 DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
01527b31 CT |
31 | #include <linux/notifier.h> |
32 | #include <linux/reboot.h> | |
760285e7 DH |
33 | #include <drm/drmP.h> |
34 | #include <drm/drm_crtc.h> | |
35 | #include <drm/drm_crtc_helper.h> | |
36 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 37 | #include "intel_drv.h" |
760285e7 | 38 | #include <drm/i915_drm.h> |
a4fc5ed6 | 39 | #include "i915_drv.h" |
a4fc5ed6 | 40 | |
a4fc5ed6 KP |
41 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
42 | ||
9dd4ffdf CML |
43 | struct dp_link_dpll { |
44 | int link_bw; | |
45 | struct dpll dpll; | |
46 | }; | |
47 | ||
48 | static const struct dp_link_dpll gen4_dpll[] = { | |
49 | { DP_LINK_BW_1_62, | |
50 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
51 | { DP_LINK_BW_2_7, | |
52 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
53 | }; | |
54 | ||
55 | static const struct dp_link_dpll pch_dpll[] = { | |
56 | { DP_LINK_BW_1_62, | |
57 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
58 | { DP_LINK_BW_2_7, | |
59 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
60 | }; | |
61 | ||
65ce4bf5 CML |
62 | static const struct dp_link_dpll vlv_dpll[] = { |
63 | { DP_LINK_BW_1_62, | |
58f6e632 | 64 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
65 | { DP_LINK_BW_2_7, |
66 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
67 | }; | |
68 | ||
ef9348c8 CML |
69 | /* |
70 | * CHV supports eDP 1.4 that have more link rates. | |
71 | * Below only provides the fixed rate but exclude variable rate. | |
72 | */ | |
73 | static const struct dp_link_dpll chv_dpll[] = { | |
74 | /* | |
75 | * CHV requires to program fractional division for m2. | |
76 | * m2 is stored in fixed point format using formula below | |
77 | * (m2_int << 22) | m2_fraction | |
78 | */ | |
79 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
80 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
81 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
82 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
83 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
84 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
85 | }; | |
86 | ||
cfcb0fc9 JB |
87 | /** |
88 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
89 | * @intel_dp: DP struct | |
90 | * | |
91 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
92 | * will return true, and false otherwise. | |
93 | */ | |
94 | static bool is_edp(struct intel_dp *intel_dp) | |
95 | { | |
da63a9f2 PZ |
96 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
97 | ||
98 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
99 | } |
100 | ||
68b4d824 | 101 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 102 | { |
68b4d824 ID |
103 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
104 | ||
105 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
106 | } |
107 | ||
df0e9248 CW |
108 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
109 | { | |
fa90ecef | 110 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
111 | } |
112 | ||
ea5b213a | 113 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 114 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 115 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
a4fc5ed6 | 116 | |
0e32b39c | 117 | int |
ea5b213a | 118 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 119 | { |
7183dc29 | 120 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
06ea66b6 | 121 | struct drm_device *dev = intel_dp->attached_connector->base.dev; |
a4fc5ed6 KP |
122 | |
123 | switch (max_link_bw) { | |
124 | case DP_LINK_BW_1_62: | |
125 | case DP_LINK_BW_2_7: | |
126 | break; | |
d4eead50 | 127 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
9bbfd20a PZ |
128 | if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || |
129 | INTEL_INFO(dev)->gen >= 8) && | |
06ea66b6 TP |
130 | intel_dp->dpcd[DP_DPCD_REV] >= 0x12) |
131 | max_link_bw = DP_LINK_BW_5_4; | |
132 | else | |
133 | max_link_bw = DP_LINK_BW_2_7; | |
d4eead50 | 134 | break; |
a4fc5ed6 | 135 | default: |
d4eead50 ID |
136 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
137 | max_link_bw); | |
a4fc5ed6 KP |
138 | max_link_bw = DP_LINK_BW_1_62; |
139 | break; | |
140 | } | |
141 | return max_link_bw; | |
142 | } | |
143 | ||
eeb6324d PZ |
144 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
145 | { | |
146 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
147 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
148 | u8 source_max, sink_max; | |
149 | ||
150 | source_max = 4; | |
151 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
152 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
153 | source_max = 2; | |
154 | ||
155 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
156 | ||
157 | return min(source_max, sink_max); | |
158 | } | |
159 | ||
cd9dde44 AJ |
160 | /* |
161 | * The units on the numbers in the next two are... bizarre. Examples will | |
162 | * make it clearer; this one parallels an example in the eDP spec. | |
163 | * | |
164 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
165 | * | |
166 | * 270000 * 1 * 8 / 10 == 216000 | |
167 | * | |
168 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
169 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
170 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
171 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
172 | * | |
173 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
174 | * get the result in decakilobits instead of kilobits. | |
175 | */ | |
176 | ||
a4fc5ed6 | 177 | static int |
c898261c | 178 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 179 | { |
cd9dde44 | 180 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
181 | } |
182 | ||
fe27d53e DA |
183 | static int |
184 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
185 | { | |
186 | return (max_link_clock * max_lanes * 8) / 10; | |
187 | } | |
188 | ||
c19de8eb | 189 | static enum drm_mode_status |
a4fc5ed6 KP |
190 | intel_dp_mode_valid(struct drm_connector *connector, |
191 | struct drm_display_mode *mode) | |
192 | { | |
df0e9248 | 193 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
194 | struct intel_connector *intel_connector = to_intel_connector(connector); |
195 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
196 | int target_clock = mode->clock; |
197 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 198 | |
dd06f90e JN |
199 | if (is_edp(intel_dp) && fixed_mode) { |
200 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
201 | return MODE_PANEL; |
202 | ||
dd06f90e | 203 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 204 | return MODE_PANEL; |
03afc4a2 DV |
205 | |
206 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
207 | } |
208 | ||
36008365 | 209 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
eeb6324d | 210 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
211 | |
212 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
213 | mode_rate = intel_dp_link_required(target_clock, 18); | |
214 | ||
215 | if (mode_rate > max_rate) | |
c4867936 | 216 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
217 | |
218 | if (mode->clock < 10000) | |
219 | return MODE_CLOCK_LOW; | |
220 | ||
0af78a2b DV |
221 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
222 | return MODE_H_ILLEGAL; | |
223 | ||
a4fc5ed6 KP |
224 | return MODE_OK; |
225 | } | |
226 | ||
227 | static uint32_t | |
228 | pack_aux(uint8_t *src, int src_bytes) | |
229 | { | |
230 | int i; | |
231 | uint32_t v = 0; | |
232 | ||
233 | if (src_bytes > 4) | |
234 | src_bytes = 4; | |
235 | for (i = 0; i < src_bytes; i++) | |
236 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
237 | return v; | |
238 | } | |
239 | ||
240 | static void | |
241 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
242 | { | |
243 | int i; | |
244 | if (dst_bytes > 4) | |
245 | dst_bytes = 4; | |
246 | for (i = 0; i < dst_bytes; i++) | |
247 | dst[i] = src >> ((3-i) * 8); | |
248 | } | |
249 | ||
fb0f8fbf KP |
250 | /* hrawclock is 1/4 the FSB frequency */ |
251 | static int | |
252 | intel_hrawclk(struct drm_device *dev) | |
253 | { | |
254 | struct drm_i915_private *dev_priv = dev->dev_private; | |
255 | uint32_t clkcfg; | |
256 | ||
9473c8f4 VP |
257 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
258 | if (IS_VALLEYVIEW(dev)) | |
259 | return 200; | |
260 | ||
fb0f8fbf KP |
261 | clkcfg = I915_READ(CLKCFG); |
262 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
263 | case CLKCFG_FSB_400: | |
264 | return 100; | |
265 | case CLKCFG_FSB_533: | |
266 | return 133; | |
267 | case CLKCFG_FSB_667: | |
268 | return 166; | |
269 | case CLKCFG_FSB_800: | |
270 | return 200; | |
271 | case CLKCFG_FSB_1067: | |
272 | return 266; | |
273 | case CLKCFG_FSB_1333: | |
274 | return 333; | |
275 | /* these two are just a guess; one of them might be right */ | |
276 | case CLKCFG_FSB_1600: | |
277 | case CLKCFG_FSB_1600_ALT: | |
278 | return 400; | |
279 | default: | |
280 | return 133; | |
281 | } | |
282 | } | |
283 | ||
bf13e81b JN |
284 | static void |
285 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
286 | struct intel_dp *intel_dp, | |
287 | struct edp_power_seq *out); | |
288 | static void | |
289 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
290 | struct intel_dp *intel_dp, | |
291 | struct edp_power_seq *out); | |
292 | ||
773538e8 VS |
293 | static void pps_lock(struct intel_dp *intel_dp) |
294 | { | |
295 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
296 | struct intel_encoder *encoder = &intel_dig_port->base; | |
297 | struct drm_device *dev = encoder->base.dev; | |
298 | struct drm_i915_private *dev_priv = dev->dev_private; | |
299 | enum intel_display_power_domain power_domain; | |
300 | ||
301 | /* | |
302 | * See vlv_power_sequencer_reset() why we need | |
303 | * a power domain reference here. | |
304 | */ | |
305 | power_domain = intel_display_port_power_domain(encoder); | |
306 | intel_display_power_get(dev_priv, power_domain); | |
307 | ||
308 | mutex_lock(&dev_priv->pps_mutex); | |
309 | } | |
310 | ||
311 | static void pps_unlock(struct intel_dp *intel_dp) | |
312 | { | |
313 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
314 | struct intel_encoder *encoder = &intel_dig_port->base; | |
315 | struct drm_device *dev = encoder->base.dev; | |
316 | struct drm_i915_private *dev_priv = dev->dev_private; | |
317 | enum intel_display_power_domain power_domain; | |
318 | ||
319 | mutex_unlock(&dev_priv->pps_mutex); | |
320 | ||
321 | power_domain = intel_display_port_power_domain(encoder); | |
322 | intel_display_power_put(dev_priv, power_domain); | |
323 | } | |
324 | ||
bf13e81b JN |
325 | static enum pipe |
326 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
327 | { | |
328 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
329 | struct drm_device *dev = intel_dig_port->base.base.dev; |
330 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
331 | struct intel_encoder *encoder; |
332 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
333 | struct edp_power_seq power_seq; | |
bf13e81b | 334 | |
e39b999a VS |
335 | lockdep_assert_held(&dev_priv->pps_mutex); |
336 | ||
a4a5d2f8 VS |
337 | if (intel_dp->pps_pipe != INVALID_PIPE) |
338 | return intel_dp->pps_pipe; | |
339 | ||
340 | /* | |
341 | * We don't have power sequencer currently. | |
342 | * Pick one that's not used by other ports. | |
343 | */ | |
344 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
345 | base.head) { | |
346 | struct intel_dp *tmp; | |
347 | ||
348 | if (encoder->type != INTEL_OUTPUT_EDP) | |
349 | continue; | |
350 | ||
351 | tmp = enc_to_intel_dp(&encoder->base); | |
352 | ||
353 | if (tmp->pps_pipe != INVALID_PIPE) | |
354 | pipes &= ~(1 << tmp->pps_pipe); | |
355 | } | |
356 | ||
357 | /* | |
358 | * Didn't find one. This should not happen since there | |
359 | * are two power sequencers and up to two eDP ports. | |
360 | */ | |
361 | if (WARN_ON(pipes == 0)) | |
362 | return PIPE_A; | |
363 | ||
364 | intel_dp->pps_pipe = ffs(pipes) - 1; | |
365 | ||
366 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
367 | pipe_name(intel_dp->pps_pipe), | |
368 | port_name(intel_dig_port->port)); | |
369 | ||
370 | /* init power sequencer on this pipe and port */ | |
371 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
372 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
373 | &power_seq); | |
374 | ||
375 | return intel_dp->pps_pipe; | |
376 | } | |
377 | ||
6491ab27 VS |
378 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
379 | enum pipe pipe); | |
380 | ||
381 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
382 | enum pipe pipe) | |
383 | { | |
384 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
385 | } | |
386 | ||
387 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
388 | enum pipe pipe) | |
389 | { | |
390 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
391 | } | |
392 | ||
393 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
394 | enum pipe pipe) | |
395 | { | |
396 | return true; | |
397 | } | |
398 | ||
a4a5d2f8 | 399 | static enum pipe |
6491ab27 VS |
400 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
401 | enum port port, | |
402 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
403 | { |
404 | enum pipe pipe; | |
bf13e81b | 405 | |
bf13e81b JN |
406 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
407 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
408 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
409 | |
410 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
411 | continue; | |
412 | ||
6491ab27 VS |
413 | if (!pipe_check(dev_priv, pipe)) |
414 | continue; | |
415 | ||
a4a5d2f8 | 416 | return pipe; |
bf13e81b JN |
417 | } |
418 | ||
a4a5d2f8 VS |
419 | return INVALID_PIPE; |
420 | } | |
421 | ||
422 | static void | |
423 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
424 | { | |
425 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
426 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
427 | struct drm_i915_private *dev_priv = dev->dev_private; | |
428 | struct edp_power_seq power_seq; | |
429 | enum port port = intel_dig_port->port; | |
430 | ||
431 | lockdep_assert_held(&dev_priv->pps_mutex); | |
432 | ||
433 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
434 | /* first pick one where the panel is on */ |
435 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
436 | vlv_pipe_has_pp_on); | |
437 | /* didn't find one? pick one where vdd is on */ | |
438 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
439 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
440 | vlv_pipe_has_vdd_on); | |
441 | /* didn't find one? pick one with just the correct port */ | |
442 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
443 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
444 | vlv_pipe_any); | |
a4a5d2f8 VS |
445 | |
446 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
447 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
448 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
449 | port_name(port)); | |
450 | return; | |
451 | } | |
452 | ||
453 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", | |
454 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
455 | ||
456 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
457 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
458 | &power_seq); | |
bf13e81b JN |
459 | } |
460 | ||
773538e8 VS |
461 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
462 | { | |
463 | struct drm_device *dev = dev_priv->dev; | |
464 | struct intel_encoder *encoder; | |
465 | ||
466 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
467 | return; | |
468 | ||
469 | /* | |
470 | * We can't grab pps_mutex here due to deadlock with power_domain | |
471 | * mutex when power_domain functions are called while holding pps_mutex. | |
472 | * That also means that in order to use pps_pipe the code needs to | |
473 | * hold both a power domain reference and pps_mutex, and the power domain | |
474 | * reference get/put must be done while _not_ holding pps_mutex. | |
475 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
476 | * should use them always. | |
477 | */ | |
478 | ||
479 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
480 | struct intel_dp *intel_dp; | |
481 | ||
482 | if (encoder->type != INTEL_OUTPUT_EDP) | |
483 | continue; | |
484 | ||
485 | intel_dp = enc_to_intel_dp(&encoder->base); | |
486 | intel_dp->pps_pipe = INVALID_PIPE; | |
487 | } | |
488 | } | |
489 | ||
bf13e81b JN |
490 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) |
491 | { | |
492 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
493 | ||
494 | if (HAS_PCH_SPLIT(dev)) | |
495 | return PCH_PP_CONTROL; | |
496 | else | |
497 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
498 | } | |
499 | ||
500 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
501 | { | |
502 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
503 | ||
504 | if (HAS_PCH_SPLIT(dev)) | |
505 | return PCH_PP_STATUS; | |
506 | else | |
507 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
508 | } | |
509 | ||
01527b31 CT |
510 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
511 | This function only applicable when panel PM state is not to be tracked */ | |
512 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
513 | void *unused) | |
514 | { | |
515 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
516 | edp_notifier); | |
517 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
518 | struct drm_i915_private *dev_priv = dev->dev_private; | |
519 | u32 pp_div; | |
520 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
521 | |
522 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
523 | return 0; | |
524 | ||
773538e8 | 525 | pps_lock(intel_dp); |
e39b999a | 526 | |
01527b31 | 527 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
528 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
529 | ||
01527b31 CT |
530 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
531 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
532 | pp_div = I915_READ(pp_div_reg); | |
533 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
534 | ||
535 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
536 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
537 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
538 | msleep(intel_dp->panel_power_cycle_delay); | |
539 | } | |
540 | ||
773538e8 | 541 | pps_unlock(intel_dp); |
e39b999a | 542 | |
01527b31 CT |
543 | return 0; |
544 | } | |
545 | ||
4be73780 | 546 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 547 | { |
30add22d | 548 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
549 | struct drm_i915_private *dev_priv = dev->dev_private; |
550 | ||
e39b999a VS |
551 | lockdep_assert_held(&dev_priv->pps_mutex); |
552 | ||
bf13e81b | 553 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
554 | } |
555 | ||
4be73780 | 556 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 557 | { |
30add22d | 558 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
559 | struct drm_i915_private *dev_priv = dev->dev_private; |
560 | ||
e39b999a VS |
561 | lockdep_assert_held(&dev_priv->pps_mutex); |
562 | ||
773538e8 | 563 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
564 | } |
565 | ||
9b984dae KP |
566 | static void |
567 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
568 | { | |
30add22d | 569 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 570 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 571 | |
9b984dae KP |
572 | if (!is_edp(intel_dp)) |
573 | return; | |
453c5420 | 574 | |
4be73780 | 575 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
576 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
577 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
578 | I915_READ(_pp_stat_reg(intel_dp)), |
579 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
580 | } |
581 | } | |
582 | ||
9ee32fea DV |
583 | static uint32_t |
584 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
585 | { | |
586 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
587 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
588 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 589 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
590 | uint32_t status; |
591 | bool done; | |
592 | ||
ef04f00d | 593 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 594 | if (has_aux_irq) |
b18ac466 | 595 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 596 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
597 | else |
598 | done = wait_for_atomic(C, 10) == 0; | |
599 | if (!done) | |
600 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
601 | has_aux_irq); | |
602 | #undef C | |
603 | ||
604 | return status; | |
605 | } | |
606 | ||
ec5b01dd | 607 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 608 | { |
174edf1f PZ |
609 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
610 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 611 | |
ec5b01dd DL |
612 | /* |
613 | * The clock divider is based off the hrawclk, and would like to run at | |
614 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 615 | */ |
ec5b01dd DL |
616 | return index ? 0 : intel_hrawclk(dev) / 2; |
617 | } | |
618 | ||
619 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
620 | { | |
621 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
622 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
623 | ||
624 | if (index) | |
625 | return 0; | |
626 | ||
627 | if (intel_dig_port->port == PORT_A) { | |
628 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
b84a1cf8 | 629 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 630 | else |
b84a1cf8 | 631 | return 225; /* eDP input clock at 450Mhz */ |
ec5b01dd DL |
632 | } else { |
633 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
634 | } | |
635 | } | |
636 | ||
637 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
638 | { | |
639 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
640 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
641 | struct drm_i915_private *dev_priv = dev->dev_private; | |
642 | ||
643 | if (intel_dig_port->port == PORT_A) { | |
644 | if (index) | |
645 | return 0; | |
646 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
2c55c336 JN |
647 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
648 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
649 | switch (index) { |
650 | case 0: return 63; | |
651 | case 1: return 72; | |
652 | default: return 0; | |
653 | } | |
ec5b01dd | 654 | } else { |
bc86625a | 655 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 656 | } |
b84a1cf8 RV |
657 | } |
658 | ||
ec5b01dd DL |
659 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
660 | { | |
661 | return index ? 0 : 100; | |
662 | } | |
663 | ||
5ed12a19 DL |
664 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
665 | bool has_aux_irq, | |
666 | int send_bytes, | |
667 | uint32_t aux_clock_divider) | |
668 | { | |
669 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
670 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
671 | uint32_t precharge, timeout; | |
672 | ||
673 | if (IS_GEN6(dev)) | |
674 | precharge = 3; | |
675 | else | |
676 | precharge = 5; | |
677 | ||
678 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
679 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
680 | else | |
681 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
682 | ||
683 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 684 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 685 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 686 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 687 | timeout | |
788d4433 | 688 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
689 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
690 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 691 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
692 | } |
693 | ||
b84a1cf8 RV |
694 | static int |
695 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
696 | uint8_t *send, int send_bytes, | |
697 | uint8_t *recv, int recv_size) | |
698 | { | |
699 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
700 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
701 | struct drm_i915_private *dev_priv = dev->dev_private; | |
702 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
703 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 704 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
705 | int i, ret, recv_bytes; |
706 | uint32_t status; | |
5ed12a19 | 707 | int try, clock = 0; |
4e6b788c | 708 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
709 | bool vdd; |
710 | ||
773538e8 | 711 | pps_lock(intel_dp); |
e39b999a | 712 | |
72c3500a VS |
713 | /* |
714 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
715 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
716 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
717 | * ourselves. | |
718 | */ | |
1e0560e0 | 719 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
720 | |
721 | /* dp aux is extremely sensitive to irq latency, hence request the | |
722 | * lowest possible wakeup latency and so prevent the cpu from going into | |
723 | * deep sleep states. | |
724 | */ | |
725 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
726 | ||
727 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 728 | |
c67a470b PZ |
729 | intel_aux_display_runtime_get(dev_priv); |
730 | ||
11bee43e JB |
731 | /* Try to wait for any previous AUX channel activity */ |
732 | for (try = 0; try < 3; try++) { | |
ef04f00d | 733 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
734 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
735 | break; | |
736 | msleep(1); | |
737 | } | |
738 | ||
739 | if (try == 3) { | |
740 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
741 | I915_READ(ch_ctl)); | |
9ee32fea DV |
742 | ret = -EBUSY; |
743 | goto out; | |
4f7f7b7e CW |
744 | } |
745 | ||
46a5ae9f PZ |
746 | /* Only 5 data registers! */ |
747 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
748 | ret = -E2BIG; | |
749 | goto out; | |
750 | } | |
751 | ||
ec5b01dd | 752 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
753 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
754 | has_aux_irq, | |
755 | send_bytes, | |
756 | aux_clock_divider); | |
5ed12a19 | 757 | |
bc86625a CW |
758 | /* Must try at least 3 times according to DP spec */ |
759 | for (try = 0; try < 5; try++) { | |
760 | /* Load the send data into the aux channel data registers */ | |
761 | for (i = 0; i < send_bytes; i += 4) | |
762 | I915_WRITE(ch_data + i, | |
763 | pack_aux(send + i, send_bytes - i)); | |
764 | ||
765 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 766 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
767 | |
768 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
769 | ||
770 | /* Clear done status and any errors */ | |
771 | I915_WRITE(ch_ctl, | |
772 | status | | |
773 | DP_AUX_CH_CTL_DONE | | |
774 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
775 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
776 | ||
777 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
778 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
779 | continue; | |
780 | if (status & DP_AUX_CH_CTL_DONE) | |
781 | break; | |
782 | } | |
4f7f7b7e | 783 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
784 | break; |
785 | } | |
786 | ||
a4fc5ed6 | 787 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 788 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
789 | ret = -EBUSY; |
790 | goto out; | |
a4fc5ed6 KP |
791 | } |
792 | ||
793 | /* Check for timeout or receive error. | |
794 | * Timeouts occur when the sink is not connected | |
795 | */ | |
a5b3da54 | 796 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 797 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
798 | ret = -EIO; |
799 | goto out; | |
a5b3da54 | 800 | } |
1ae8c0a5 KP |
801 | |
802 | /* Timeouts occur when the device isn't connected, so they're | |
803 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 804 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 805 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
806 | ret = -ETIMEDOUT; |
807 | goto out; | |
a4fc5ed6 KP |
808 | } |
809 | ||
810 | /* Unload any bytes sent back from the other side */ | |
811 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
812 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
813 | if (recv_bytes > recv_size) |
814 | recv_bytes = recv_size; | |
0206e353 | 815 | |
4f7f7b7e CW |
816 | for (i = 0; i < recv_bytes; i += 4) |
817 | unpack_aux(I915_READ(ch_data + i), | |
818 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 819 | |
9ee32fea DV |
820 | ret = recv_bytes; |
821 | out: | |
822 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 823 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 824 | |
884f19e9 JN |
825 | if (vdd) |
826 | edp_panel_vdd_off(intel_dp, false); | |
827 | ||
773538e8 | 828 | pps_unlock(intel_dp); |
e39b999a | 829 | |
9ee32fea | 830 | return ret; |
a4fc5ed6 KP |
831 | } |
832 | ||
a6c8aff0 JN |
833 | #define BARE_ADDRESS_SIZE 3 |
834 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
835 | static ssize_t |
836 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 837 | { |
9d1a1031 JN |
838 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
839 | uint8_t txbuf[20], rxbuf[20]; | |
840 | size_t txsize, rxsize; | |
a4fc5ed6 | 841 | int ret; |
a4fc5ed6 | 842 | |
9d1a1031 JN |
843 | txbuf[0] = msg->request << 4; |
844 | txbuf[1] = msg->address >> 8; | |
845 | txbuf[2] = msg->address & 0xff; | |
846 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 847 | |
9d1a1031 JN |
848 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
849 | case DP_AUX_NATIVE_WRITE: | |
850 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 851 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
9d1a1031 | 852 | rxsize = 1; |
f51a44b9 | 853 | |
9d1a1031 JN |
854 | if (WARN_ON(txsize > 20)) |
855 | return -E2BIG; | |
a4fc5ed6 | 856 | |
9d1a1031 | 857 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 858 | |
9d1a1031 JN |
859 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
860 | if (ret > 0) { | |
861 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 862 | |
9d1a1031 JN |
863 | /* Return payload size. */ |
864 | ret = msg->size; | |
865 | } | |
866 | break; | |
46a5ae9f | 867 | |
9d1a1031 JN |
868 | case DP_AUX_NATIVE_READ: |
869 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 870 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 871 | rxsize = msg->size + 1; |
a4fc5ed6 | 872 | |
9d1a1031 JN |
873 | if (WARN_ON(rxsize > 20)) |
874 | return -E2BIG; | |
a4fc5ed6 | 875 | |
9d1a1031 JN |
876 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
877 | if (ret > 0) { | |
878 | msg->reply = rxbuf[0] >> 4; | |
879 | /* | |
880 | * Assume happy day, and copy the data. The caller is | |
881 | * expected to check msg->reply before touching it. | |
882 | * | |
883 | * Return payload size. | |
884 | */ | |
885 | ret--; | |
886 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 887 | } |
9d1a1031 JN |
888 | break; |
889 | ||
890 | default: | |
891 | ret = -EINVAL; | |
892 | break; | |
a4fc5ed6 | 893 | } |
f51a44b9 | 894 | |
9d1a1031 | 895 | return ret; |
a4fc5ed6 KP |
896 | } |
897 | ||
9d1a1031 JN |
898 | static void |
899 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
900 | { | |
901 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
902 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
903 | enum port port = intel_dig_port->port; | |
0b99836f | 904 | const char *name = NULL; |
ab2c0672 DA |
905 | int ret; |
906 | ||
33ad6626 JN |
907 | switch (port) { |
908 | case PORT_A: | |
909 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 910 | name = "DPDDC-A"; |
ab2c0672 | 911 | break; |
33ad6626 JN |
912 | case PORT_B: |
913 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 914 | name = "DPDDC-B"; |
ab2c0672 | 915 | break; |
33ad6626 JN |
916 | case PORT_C: |
917 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 918 | name = "DPDDC-C"; |
ab2c0672 | 919 | break; |
33ad6626 JN |
920 | case PORT_D: |
921 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 922 | name = "DPDDC-D"; |
33ad6626 JN |
923 | break; |
924 | default: | |
925 | BUG(); | |
ab2c0672 DA |
926 | } |
927 | ||
33ad6626 JN |
928 | if (!HAS_DDI(dev)) |
929 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; | |
8316f337 | 930 | |
0b99836f | 931 | intel_dp->aux.name = name; |
9d1a1031 JN |
932 | intel_dp->aux.dev = dev->dev; |
933 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 934 | |
0b99836f JN |
935 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
936 | connector->base.kdev->kobj.name); | |
8316f337 | 937 | |
4f71d0cb | 938 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 939 | if (ret < 0) { |
4f71d0cb | 940 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
941 | name, ret); |
942 | return; | |
ab2c0672 | 943 | } |
8a5e6aeb | 944 | |
0b99836f JN |
945 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
946 | &intel_dp->aux.ddc.dev.kobj, | |
947 | intel_dp->aux.ddc.dev.kobj.name); | |
948 | if (ret < 0) { | |
949 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 950 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 951 | } |
a4fc5ed6 KP |
952 | } |
953 | ||
80f65de3 ID |
954 | static void |
955 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
956 | { | |
957 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
958 | ||
0e32b39c DA |
959 | if (!intel_connector->mst_port) |
960 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
961 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
962 | intel_connector_unregister(intel_connector); |
963 | } | |
964 | ||
0e50338c DV |
965 | static void |
966 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_config *pipe_config, int link_bw) | |
967 | { | |
968 | switch (link_bw) { | |
969 | case DP_LINK_BW_1_62: | |
970 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
971 | break; | |
972 | case DP_LINK_BW_2_7: | |
973 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
974 | break; | |
975 | case DP_LINK_BW_5_4: | |
976 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
977 | break; | |
978 | } | |
979 | } | |
980 | ||
c6bb3538 DV |
981 | static void |
982 | intel_dp_set_clock(struct intel_encoder *encoder, | |
983 | struct intel_crtc_config *pipe_config, int link_bw) | |
984 | { | |
985 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
986 | const struct dp_link_dpll *divisor = NULL; |
987 | int i, count = 0; | |
c6bb3538 DV |
988 | |
989 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
990 | divisor = gen4_dpll; |
991 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 992 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
993 | divisor = pch_dpll; |
994 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
995 | } else if (IS_CHERRYVIEW(dev)) { |
996 | divisor = chv_dpll; | |
997 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 998 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
999 | divisor = vlv_dpll; |
1000 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1001 | } |
9dd4ffdf CML |
1002 | |
1003 | if (divisor && count) { | |
1004 | for (i = 0; i < count; i++) { | |
1005 | if (link_bw == divisor[i].link_bw) { | |
1006 | pipe_config->dpll = divisor[i].dpll; | |
1007 | pipe_config->clock_set = true; | |
1008 | break; | |
1009 | } | |
1010 | } | |
c6bb3538 DV |
1011 | } |
1012 | } | |
1013 | ||
00c09d70 | 1014 | bool |
5bfe2ac0 DV |
1015 | intel_dp_compute_config(struct intel_encoder *encoder, |
1016 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 1017 | { |
5bfe2ac0 | 1018 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1019 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 1020 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 1021 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1022 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 1023 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 1024 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1025 | int lane_count, clock; |
56071a20 | 1026 | int min_lane_count = 1; |
eeb6324d | 1027 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1028 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1029 | int min_clock = 0; |
06ea66b6 | 1030 | int max_clock = intel_dp_max_link_bw(intel_dp) >> 3; |
083f9560 | 1031 | int bpp, mode_rate; |
06ea66b6 | 1032 | static int bws[] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7, DP_LINK_BW_5_4 }; |
ff9a6750 | 1033 | int link_avail, link_clock; |
a4fc5ed6 | 1034 | |
bc7d38a4 | 1035 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1036 | pipe_config->has_pch_encoder = true; |
1037 | ||
03afc4a2 | 1038 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1039 | pipe_config->has_drrs = false; |
9ed109a7 | 1040 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 1041 | |
dd06f90e JN |
1042 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1043 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1044 | adjusted_mode); | |
2dd24552 JB |
1045 | if (!HAS_PCH_SPLIT(dev)) |
1046 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1047 | intel_connector->panel.fitting_mode); | |
1048 | else | |
b074cec8 JB |
1049 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1050 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1051 | } |
1052 | ||
cb1793ce | 1053 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1054 | return false; |
1055 | ||
083f9560 DV |
1056 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
1057 | "max bw %02x pixel clock %iKHz\n", | |
241bfc38 DL |
1058 | max_lane_count, bws[max_clock], |
1059 | adjusted_mode->crtc_clock); | |
083f9560 | 1060 | |
36008365 DV |
1061 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1062 | * bpc in between. */ | |
3e7ca985 | 1063 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1064 | if (is_edp(intel_dp)) { |
1065 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1066 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1067 | dev_priv->vbt.edp_bpp); | |
1068 | bpp = dev_priv->vbt.edp_bpp; | |
1069 | } | |
1070 | ||
f4cdbc21 JN |
1071 | if (IS_BROADWELL(dev)) { |
1072 | /* Yes, it's an ugly hack. */ | |
1073 | min_lane_count = max_lane_count; | |
1074 | DRM_DEBUG_KMS("forcing lane count to max (%u) on BDW\n", | |
1075 | min_lane_count); | |
1076 | } else if (dev_priv->vbt.edp_lanes) { | |
56071a20 JN |
1077 | min_lane_count = min(dev_priv->vbt.edp_lanes, |
1078 | max_lane_count); | |
1079 | DRM_DEBUG_KMS("using min %u lanes per VBT\n", | |
1080 | min_lane_count); | |
1081 | } | |
1082 | ||
1083 | if (dev_priv->vbt.edp_rate) { | |
1084 | min_clock = min(dev_priv->vbt.edp_rate >> 3, max_clock); | |
1085 | DRM_DEBUG_KMS("using min %02x link bw per VBT\n", | |
1086 | bws[min_clock]); | |
1087 | } | |
7984211e | 1088 | } |
657445fe | 1089 | |
36008365 | 1090 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1091 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1092 | bpp); | |
36008365 | 1093 | |
c6930992 DA |
1094 | for (clock = min_clock; clock <= max_clock; clock++) { |
1095 | for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) { | |
36008365 DV |
1096 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); |
1097 | link_avail = intel_dp_max_data_rate(link_clock, | |
1098 | lane_count); | |
1099 | ||
1100 | if (mode_rate <= link_avail) { | |
1101 | goto found; | |
1102 | } | |
1103 | } | |
1104 | } | |
1105 | } | |
c4867936 | 1106 | |
36008365 | 1107 | return false; |
3685a8f3 | 1108 | |
36008365 | 1109 | found: |
55bc60db VS |
1110 | if (intel_dp->color_range_auto) { |
1111 | /* | |
1112 | * See: | |
1113 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1114 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1115 | */ | |
18316c8c | 1116 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1117 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1118 | else | |
1119 | intel_dp->color_range = 0; | |
1120 | } | |
1121 | ||
3685a8f3 | 1122 | if (intel_dp->color_range) |
50f3b016 | 1123 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1124 | |
36008365 DV |
1125 | intel_dp->link_bw = bws[clock]; |
1126 | intel_dp->lane_count = lane_count; | |
657445fe | 1127 | pipe_config->pipe_bpp = bpp; |
ff9a6750 | 1128 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
a4fc5ed6 | 1129 | |
36008365 DV |
1130 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1131 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1132 | pipe_config->port_clock, bpp); |
36008365 DV |
1133 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1134 | mode_rate, link_avail); | |
a4fc5ed6 | 1135 | |
03afc4a2 | 1136 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1137 | adjusted_mode->crtc_clock, |
1138 | pipe_config->port_clock, | |
03afc4a2 | 1139 | &pipe_config->dp_m_n); |
9d1a455b | 1140 | |
439d7ac0 PB |
1141 | if (intel_connector->panel.downclock_mode != NULL && |
1142 | intel_dp->drrs_state.type == SEAMLESS_DRRS_SUPPORT) { | |
f769cd24 | 1143 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1144 | intel_link_compute_m_n(bpp, lane_count, |
1145 | intel_connector->panel.downclock_mode->clock, | |
1146 | pipe_config->port_clock, | |
1147 | &pipe_config->dp_m2_n2); | |
1148 | } | |
1149 | ||
ea155f32 | 1150 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1151 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1152 | else | |
1153 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1154 | |
03afc4a2 | 1155 | return true; |
a4fc5ed6 KP |
1156 | } |
1157 | ||
7c62a164 | 1158 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1159 | { |
7c62a164 DV |
1160 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1161 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1162 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1163 | struct drm_i915_private *dev_priv = dev->dev_private; |
1164 | u32 dpa_ctl; | |
1165 | ||
ff9a6750 | 1166 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", crtc->config.port_clock); |
ea9b6006 DV |
1167 | dpa_ctl = I915_READ(DP_A); |
1168 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1169 | ||
ff9a6750 | 1170 | if (crtc->config.port_clock == 162000) { |
1ce17038 DV |
1171 | /* For a long time we've carried around a ILK-DevA w/a for the |
1172 | * 160MHz clock. If we're really unlucky, it's still required. | |
1173 | */ | |
1174 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1175 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1176 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1177 | } else { |
1178 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1179 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1180 | } |
1ce17038 | 1181 | |
ea9b6006 DV |
1182 | I915_WRITE(DP_A, dpa_ctl); |
1183 | ||
1184 | POSTING_READ(DP_A); | |
1185 | udelay(500); | |
1186 | } | |
1187 | ||
8ac33ed3 | 1188 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1189 | { |
b934223d | 1190 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1191 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1192 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1193 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d DV |
1194 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
1195 | struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode; | |
a4fc5ed6 | 1196 | |
417e822d | 1197 | /* |
1a2eb460 | 1198 | * There are four kinds of DP registers: |
417e822d KP |
1199 | * |
1200 | * IBX PCH | |
1a2eb460 KP |
1201 | * SNB CPU |
1202 | * IVB CPU | |
417e822d KP |
1203 | * CPT PCH |
1204 | * | |
1205 | * IBX PCH and CPU are the same for almost everything, | |
1206 | * except that the CPU DP PLL is configured in this | |
1207 | * register | |
1208 | * | |
1209 | * CPT PCH is quite different, having many bits moved | |
1210 | * to the TRANS_DP_CTL register instead. That | |
1211 | * configuration happens (oddly) in ironlake_pch_enable | |
1212 | */ | |
9c9e7927 | 1213 | |
417e822d KP |
1214 | /* Preserve the BIOS-computed detected bit. This is |
1215 | * supposed to be read-only. | |
1216 | */ | |
1217 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1218 | |
417e822d | 1219 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1220 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1221 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1222 | |
9ed109a7 | 1223 | if (crtc->config.has_audio) { |
e0dac65e | 1224 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
7c62a164 | 1225 | pipe_name(crtc->pipe)); |
ea5b213a | 1226 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
b934223d | 1227 | intel_write_eld(&encoder->base, adjusted_mode); |
e0dac65e | 1228 | } |
247d89f6 | 1229 | |
417e822d | 1230 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1231 | |
bc7d38a4 | 1232 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1233 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1234 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1235 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1236 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1237 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1238 | ||
6aba5b6c | 1239 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1240 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1241 | ||
7c62a164 | 1242 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1243 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1244 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1245 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1246 | |
1247 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1248 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1249 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1250 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1251 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1252 | ||
6aba5b6c | 1253 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1254 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1255 | ||
44f37d1f CML |
1256 | if (!IS_CHERRYVIEW(dev)) { |
1257 | if (crtc->pipe == 1) | |
1258 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1259 | } else { | |
1260 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1261 | } | |
417e822d KP |
1262 | } else { |
1263 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1264 | } |
a4fc5ed6 KP |
1265 | } |
1266 | ||
ffd6749d PZ |
1267 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1268 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1269 | |
1a5ef5b7 PZ |
1270 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1271 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1272 | |
ffd6749d PZ |
1273 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1274 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1275 | |
4be73780 | 1276 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1277 | u32 mask, |
1278 | u32 value) | |
bd943159 | 1279 | { |
30add22d | 1280 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1281 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1282 | u32 pp_stat_reg, pp_ctrl_reg; |
1283 | ||
e39b999a VS |
1284 | lockdep_assert_held(&dev_priv->pps_mutex); |
1285 | ||
bf13e81b JN |
1286 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1287 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1288 | |
99ea7127 | 1289 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1290 | mask, value, |
1291 | I915_READ(pp_stat_reg), | |
1292 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1293 | |
453c5420 | 1294 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1295 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1296 | I915_READ(pp_stat_reg), |
1297 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1298 | } |
54c136d4 CW |
1299 | |
1300 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1301 | } |
32ce697c | 1302 | |
4be73780 | 1303 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1304 | { |
1305 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1306 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1307 | } |
1308 | ||
4be73780 | 1309 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1310 | { |
1311 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1312 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1313 | } |
1314 | ||
4be73780 | 1315 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1316 | { |
1317 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1318 | |
1319 | /* When we disable the VDD override bit last we have to do the manual | |
1320 | * wait. */ | |
1321 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1322 | intel_dp->panel_power_cycle_delay); | |
1323 | ||
4be73780 | 1324 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1325 | } |
1326 | ||
4be73780 | 1327 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1328 | { |
1329 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1330 | intel_dp->backlight_on_delay); | |
1331 | } | |
1332 | ||
4be73780 | 1333 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1334 | { |
1335 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1336 | intel_dp->backlight_off_delay); | |
1337 | } | |
99ea7127 | 1338 | |
832dd3c1 KP |
1339 | /* Read the current pp_control value, unlocking the register if it |
1340 | * is locked | |
1341 | */ | |
1342 | ||
453c5420 | 1343 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1344 | { |
453c5420 JB |
1345 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1346 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1347 | u32 control; | |
832dd3c1 | 1348 | |
e39b999a VS |
1349 | lockdep_assert_held(&dev_priv->pps_mutex); |
1350 | ||
bf13e81b | 1351 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1352 | control &= ~PANEL_UNLOCK_MASK; |
1353 | control |= PANEL_UNLOCK_REGS; | |
1354 | return control; | |
bd943159 KP |
1355 | } |
1356 | ||
1e0560e0 | 1357 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1358 | { |
30add22d | 1359 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1360 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1361 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1362 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1363 | enum intel_display_power_domain power_domain; |
5d613501 | 1364 | u32 pp; |
453c5420 | 1365 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1366 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1367 | |
e39b999a VS |
1368 | lockdep_assert_held(&dev_priv->pps_mutex); |
1369 | ||
97af61f5 | 1370 | if (!is_edp(intel_dp)) |
adddaaf4 | 1371 | return false; |
bd943159 KP |
1372 | |
1373 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 1374 | |
4be73780 | 1375 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1376 | return need_to_disable; |
b0665d57 | 1377 | |
4e6e1a54 ID |
1378 | power_domain = intel_display_port_power_domain(intel_encoder); |
1379 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1380 | |
b0665d57 | 1381 | DRM_DEBUG_KMS("Turning eDP VDD on\n"); |
bd943159 | 1382 | |
4be73780 DV |
1383 | if (!edp_have_panel_power(intel_dp)) |
1384 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1385 | |
453c5420 | 1386 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1387 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1388 | |
bf13e81b JN |
1389 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1390 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1391 | |
1392 | I915_WRITE(pp_ctrl_reg, pp); | |
1393 | POSTING_READ(pp_ctrl_reg); | |
1394 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1395 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1396 | /* |
1397 | * If the panel wasn't on, delay before accessing aux channel | |
1398 | */ | |
4be73780 | 1399 | if (!edp_have_panel_power(intel_dp)) { |
bd943159 | 1400 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1401 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1402 | } |
adddaaf4 JN |
1403 | |
1404 | return need_to_disable; | |
1405 | } | |
1406 | ||
b80d6c78 | 1407 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1408 | { |
c695b6b6 | 1409 | bool vdd; |
adddaaf4 | 1410 | |
c695b6b6 VS |
1411 | if (!is_edp(intel_dp)) |
1412 | return; | |
1413 | ||
773538e8 | 1414 | pps_lock(intel_dp); |
c695b6b6 | 1415 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1416 | pps_unlock(intel_dp); |
c695b6b6 VS |
1417 | |
1418 | WARN(!vdd, "eDP VDD already requested on\n"); | |
5d613501 JB |
1419 | } |
1420 | ||
4be73780 | 1421 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1422 | { |
30add22d | 1423 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1424 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1425 | struct intel_digital_port *intel_dig_port = |
1426 | dp_to_dig_port(intel_dp); | |
1427 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1428 | enum intel_display_power_domain power_domain; | |
5d613501 | 1429 | u32 pp; |
453c5420 | 1430 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1431 | |
e39b999a | 1432 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1433 | |
15e899a0 VS |
1434 | WARN_ON(intel_dp->want_panel_vdd); |
1435 | ||
1436 | if (!edp_have_panel_vdd(intel_dp)) | |
be2c9196 | 1437 | return; |
4e6e1a54 | 1438 | |
be2c9196 | 1439 | DRM_DEBUG_KMS("Turning eDP VDD off\n"); |
b0665d57 | 1440 | |
be2c9196 VS |
1441 | pp = ironlake_get_pp_control(intel_dp); |
1442 | pp &= ~EDP_FORCE_VDD; | |
bd943159 | 1443 | |
be2c9196 VS |
1444 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1445 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
453c5420 | 1446 | |
be2c9196 VS |
1447 | I915_WRITE(pp_ctrl_reg, pp); |
1448 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1449 | |
be2c9196 VS |
1450 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1451 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1452 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
90791a5c | 1453 | |
be2c9196 VS |
1454 | if ((pp & POWER_TARGET_ON) == 0) |
1455 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1456 | |
be2c9196 VS |
1457 | power_domain = intel_display_port_power_domain(intel_encoder); |
1458 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1459 | } |
5d613501 | 1460 | |
4be73780 | 1461 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1462 | { |
1463 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1464 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1465 | |
773538e8 | 1466 | pps_lock(intel_dp); |
15e899a0 VS |
1467 | if (!intel_dp->want_panel_vdd) |
1468 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1469 | pps_unlock(intel_dp); |
bd943159 KP |
1470 | } |
1471 | ||
aba86890 ID |
1472 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1473 | { | |
1474 | unsigned long delay; | |
1475 | ||
1476 | /* | |
1477 | * Queue the timer to fire a long time from now (relative to the power | |
1478 | * down delay) to keep the panel power up across a sequence of | |
1479 | * operations. | |
1480 | */ | |
1481 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1482 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1483 | } | |
1484 | ||
4be73780 | 1485 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1486 | { |
e39b999a VS |
1487 | struct drm_i915_private *dev_priv = |
1488 | intel_dp_to_dev(intel_dp)->dev_private; | |
1489 | ||
1490 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1491 | ||
97af61f5 KP |
1492 | if (!is_edp(intel_dp)) |
1493 | return; | |
5d613501 | 1494 | |
bd943159 | 1495 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); |
f2e8b18a | 1496 | |
bd943159 KP |
1497 | intel_dp->want_panel_vdd = false; |
1498 | ||
aba86890 | 1499 | if (sync) |
4be73780 | 1500 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1501 | else |
1502 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1503 | } |
1504 | ||
1e0560e0 VS |
1505 | static void intel_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
1506 | { | |
e39b999a VS |
1507 | if (!is_edp(intel_dp)) |
1508 | return; | |
1509 | ||
773538e8 | 1510 | pps_lock(intel_dp); |
1e0560e0 | 1511 | edp_panel_vdd_off(intel_dp, sync); |
773538e8 | 1512 | pps_unlock(intel_dp); |
1e0560e0 VS |
1513 | } |
1514 | ||
4be73780 | 1515 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1516 | { |
30add22d | 1517 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1518 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1519 | u32 pp; |
453c5420 | 1520 | u32 pp_ctrl_reg; |
9934c132 | 1521 | |
97af61f5 | 1522 | if (!is_edp(intel_dp)) |
bd943159 | 1523 | return; |
99ea7127 KP |
1524 | |
1525 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1526 | ||
773538e8 | 1527 | pps_lock(intel_dp); |
e39b999a | 1528 | |
4be73780 | 1529 | if (edp_have_panel_power(intel_dp)) { |
99ea7127 | 1530 | DRM_DEBUG_KMS("eDP power already on\n"); |
e39b999a | 1531 | goto out; |
99ea7127 | 1532 | } |
9934c132 | 1533 | |
4be73780 | 1534 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1535 | |
bf13e81b | 1536 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1537 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1538 | if (IS_GEN5(dev)) { |
1539 | /* ILK workaround: disable reset around power sequence */ | |
1540 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1541 | I915_WRITE(pp_ctrl_reg, pp); |
1542 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1543 | } |
37c6c9b0 | 1544 | |
1c0ae80a | 1545 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1546 | if (!IS_GEN5(dev)) |
1547 | pp |= PANEL_POWER_RESET; | |
1548 | ||
453c5420 JB |
1549 | I915_WRITE(pp_ctrl_reg, pp); |
1550 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1551 | |
4be73780 | 1552 | wait_panel_on(intel_dp); |
dce56b3c | 1553 | intel_dp->last_power_on = jiffies; |
9934c132 | 1554 | |
05ce1a49 KP |
1555 | if (IS_GEN5(dev)) { |
1556 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1557 | I915_WRITE(pp_ctrl_reg, pp); |
1558 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1559 | } |
e39b999a VS |
1560 | |
1561 | out: | |
773538e8 | 1562 | pps_unlock(intel_dp); |
9934c132 JB |
1563 | } |
1564 | ||
4be73780 | 1565 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1566 | { |
4e6e1a54 ID |
1567 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1568 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1569 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1570 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1571 | enum intel_display_power_domain power_domain; |
99ea7127 | 1572 | u32 pp; |
453c5420 | 1573 | u32 pp_ctrl_reg; |
9934c132 | 1574 | |
97af61f5 KP |
1575 | if (!is_edp(intel_dp)) |
1576 | return; | |
37c6c9b0 | 1577 | |
99ea7127 | 1578 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1579 | |
773538e8 | 1580 | pps_lock(intel_dp); |
e39b999a | 1581 | |
24f3e092 JN |
1582 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
1583 | ||
453c5420 | 1584 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1585 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1586 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1587 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1588 | EDP_BLC_ENABLE); | |
453c5420 | 1589 | |
bf13e81b | 1590 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1591 | |
849e39f5 PZ |
1592 | intel_dp->want_panel_vdd = false; |
1593 | ||
453c5420 JB |
1594 | I915_WRITE(pp_ctrl_reg, pp); |
1595 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1596 | |
dce56b3c | 1597 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1598 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1599 | |
1600 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1601 | power_domain = intel_display_port_power_domain(intel_encoder); |
1602 | intel_display_power_put(dev_priv, power_domain); | |
e39b999a | 1603 | |
773538e8 | 1604 | pps_unlock(intel_dp); |
9934c132 JB |
1605 | } |
1606 | ||
1250d107 JN |
1607 | /* Enable backlight in the panel power control. */ |
1608 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1609 | { |
da63a9f2 PZ |
1610 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1611 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1612 | struct drm_i915_private *dev_priv = dev->dev_private; |
1613 | u32 pp; | |
453c5420 | 1614 | u32 pp_ctrl_reg; |
32f9d658 | 1615 | |
01cb9ea6 JB |
1616 | /* |
1617 | * If we enable the backlight right away following a panel power | |
1618 | * on, we may see slight flicker as the panel syncs with the eDP | |
1619 | * link. So delay a bit to make sure the image is solid before | |
1620 | * allowing it to appear. | |
1621 | */ | |
4be73780 | 1622 | wait_backlight_on(intel_dp); |
e39b999a | 1623 | |
773538e8 | 1624 | pps_lock(intel_dp); |
e39b999a | 1625 | |
453c5420 | 1626 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1627 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1628 | |
bf13e81b | 1629 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1630 | |
1631 | I915_WRITE(pp_ctrl_reg, pp); | |
1632 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1633 | |
773538e8 | 1634 | pps_unlock(intel_dp); |
32f9d658 ZW |
1635 | } |
1636 | ||
1250d107 JN |
1637 | /* Enable backlight PWM and backlight PP control. */ |
1638 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1639 | { | |
1640 | if (!is_edp(intel_dp)) | |
1641 | return; | |
1642 | ||
1643 | DRM_DEBUG_KMS("\n"); | |
1644 | ||
1645 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1646 | _intel_edp_backlight_on(intel_dp); | |
1647 | } | |
1648 | ||
1649 | /* Disable backlight in the panel power control. */ | |
1650 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 1651 | { |
30add22d | 1652 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1653 | struct drm_i915_private *dev_priv = dev->dev_private; |
1654 | u32 pp; | |
453c5420 | 1655 | u32 pp_ctrl_reg; |
32f9d658 | 1656 | |
e39b999a VS |
1657 | if (!is_edp(intel_dp)) |
1658 | return; | |
1659 | ||
773538e8 | 1660 | pps_lock(intel_dp); |
e39b999a | 1661 | |
453c5420 | 1662 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1663 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1664 | |
bf13e81b | 1665 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1666 | |
1667 | I915_WRITE(pp_ctrl_reg, pp); | |
1668 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 1669 | |
773538e8 | 1670 | pps_unlock(intel_dp); |
e39b999a VS |
1671 | |
1672 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 1673 | edp_wait_backlight_off(intel_dp); |
1250d107 JN |
1674 | } |
1675 | ||
1676 | /* Disable backlight PP control and backlight PWM. */ | |
1677 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
1678 | { | |
1679 | if (!is_edp(intel_dp)) | |
1680 | return; | |
1681 | ||
1682 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 1683 | |
1250d107 | 1684 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 1685 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 1686 | } |
a4fc5ed6 | 1687 | |
73580fb7 JN |
1688 | /* |
1689 | * Hook for controlling the panel power control backlight through the bl_power | |
1690 | * sysfs attribute. Take care to handle multiple calls. | |
1691 | */ | |
1692 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
1693 | bool enable) | |
1694 | { | |
1695 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
1696 | bool is_enabled; |
1697 | ||
773538e8 | 1698 | pps_lock(intel_dp); |
e39b999a | 1699 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 1700 | pps_unlock(intel_dp); |
73580fb7 JN |
1701 | |
1702 | if (is_enabled == enable) | |
1703 | return; | |
1704 | ||
23ba9373 JN |
1705 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
1706 | enable ? "enable" : "disable"); | |
73580fb7 JN |
1707 | |
1708 | if (enable) | |
1709 | _intel_edp_backlight_on(intel_dp); | |
1710 | else | |
1711 | _intel_edp_backlight_off(intel_dp); | |
1712 | } | |
1713 | ||
2bd2ad64 | 1714 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1715 | { |
da63a9f2 PZ |
1716 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1717 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1718 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1719 | struct drm_i915_private *dev_priv = dev->dev_private; |
1720 | u32 dpa_ctl; | |
1721 | ||
2bd2ad64 DV |
1722 | assert_pipe_disabled(dev_priv, |
1723 | to_intel_crtc(crtc)->pipe); | |
1724 | ||
d240f20f JB |
1725 | DRM_DEBUG_KMS("\n"); |
1726 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1727 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1728 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1729 | ||
1730 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1731 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1732 | * enable bits here to ensure that we don't enable too much. */ | |
1733 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1734 | intel_dp->DP |= DP_PLL_ENABLE; | |
1735 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1736 | POSTING_READ(DP_A); |
1737 | udelay(200); | |
d240f20f JB |
1738 | } |
1739 | ||
2bd2ad64 | 1740 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1741 | { |
da63a9f2 PZ |
1742 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1743 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1744 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1745 | struct drm_i915_private *dev_priv = dev->dev_private; |
1746 | u32 dpa_ctl; | |
1747 | ||
2bd2ad64 DV |
1748 | assert_pipe_disabled(dev_priv, |
1749 | to_intel_crtc(crtc)->pipe); | |
1750 | ||
d240f20f | 1751 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1752 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1753 | "dp pll off, should be on\n"); | |
1754 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1755 | ||
1756 | /* We can't rely on the value tracked for the DP register in | |
1757 | * intel_dp->DP because link_down must not change that (otherwise link | |
1758 | * re-training will fail. */ | |
298b0b39 | 1759 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1760 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1761 | POSTING_READ(DP_A); |
d240f20f JB |
1762 | udelay(200); |
1763 | } | |
1764 | ||
c7ad3810 | 1765 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1766 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1767 | { |
1768 | int ret, i; | |
1769 | ||
1770 | /* Should have a valid DPCD by this point */ | |
1771 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1772 | return; | |
1773 | ||
1774 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
1775 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1776 | DP_SET_POWER_D3); | |
c7ad3810 JB |
1777 | } else { |
1778 | /* | |
1779 | * When turning on, we need to retry for 1ms to give the sink | |
1780 | * time to wake up. | |
1781 | */ | |
1782 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
1783 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1784 | DP_SET_POWER_D0); | |
c7ad3810 JB |
1785 | if (ret == 1) |
1786 | break; | |
1787 | msleep(1); | |
1788 | } | |
1789 | } | |
f9cac721 JN |
1790 | |
1791 | if (ret != 1) | |
1792 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
1793 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
1794 | } |
1795 | ||
19d8fe15 DV |
1796 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1797 | enum pipe *pipe) | |
d240f20f | 1798 | { |
19d8fe15 | 1799 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1800 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1801 | struct drm_device *dev = encoder->base.dev; |
1802 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
1803 | enum intel_display_power_domain power_domain; |
1804 | u32 tmp; | |
1805 | ||
1806 | power_domain = intel_display_port_power_domain(encoder); | |
1807 | if (!intel_display_power_enabled(dev_priv, power_domain)) | |
1808 | return false; | |
1809 | ||
1810 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
1811 | |
1812 | if (!(tmp & DP_PORT_EN)) | |
1813 | return false; | |
1814 | ||
bc7d38a4 | 1815 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1816 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
1817 | } else if (IS_CHERRYVIEW(dev)) { |
1818 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 1819 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1820 | *pipe = PORT_TO_PIPE(tmp); |
1821 | } else { | |
1822 | u32 trans_sel; | |
1823 | u32 trans_dp; | |
1824 | int i; | |
1825 | ||
1826 | switch (intel_dp->output_reg) { | |
1827 | case PCH_DP_B: | |
1828 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1829 | break; | |
1830 | case PCH_DP_C: | |
1831 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1832 | break; | |
1833 | case PCH_DP_D: | |
1834 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1835 | break; | |
1836 | default: | |
1837 | return true; | |
1838 | } | |
1839 | ||
055e393f | 1840 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
1841 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
1842 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1843 | *pipe = i; | |
1844 | return true; | |
1845 | } | |
1846 | } | |
19d8fe15 | 1847 | |
4a0833ec DV |
1848 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1849 | intel_dp->output_reg); | |
1850 | } | |
d240f20f | 1851 | |
19d8fe15 DV |
1852 | return true; |
1853 | } | |
d240f20f | 1854 | |
045ac3b5 JB |
1855 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1856 | struct intel_crtc_config *pipe_config) | |
1857 | { | |
1858 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1859 | u32 tmp, flags = 0; |
63000ef6 XZ |
1860 | struct drm_device *dev = encoder->base.dev; |
1861 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1862 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1863 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 1864 | int dotclock; |
045ac3b5 | 1865 | |
9ed109a7 DV |
1866 | tmp = I915_READ(intel_dp->output_reg); |
1867 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
1868 | pipe_config->has_audio = true; | |
1869 | ||
63000ef6 | 1870 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
1871 | if (tmp & DP_SYNC_HS_HIGH) |
1872 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1873 | else | |
1874 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1875 | |
63000ef6 XZ |
1876 | if (tmp & DP_SYNC_VS_HIGH) |
1877 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1878 | else | |
1879 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1880 | } else { | |
1881 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1882 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1883 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1884 | else | |
1885 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1886 | |
63000ef6 XZ |
1887 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1888 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1889 | else | |
1890 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1891 | } | |
045ac3b5 JB |
1892 | |
1893 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc | 1894 | |
eb14cb74 VS |
1895 | pipe_config->has_dp_encoder = true; |
1896 | ||
1897 | intel_dp_get_m_n(crtc, pipe_config); | |
1898 | ||
18442d08 | 1899 | if (port == PORT_A) { |
f1f644dc JB |
1900 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
1901 | pipe_config->port_clock = 162000; | |
1902 | else | |
1903 | pipe_config->port_clock = 270000; | |
1904 | } | |
18442d08 VS |
1905 | |
1906 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
1907 | &pipe_config->dp_m_n); | |
1908 | ||
1909 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
1910 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
1911 | ||
241bfc38 | 1912 | pipe_config->adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 1913 | |
c6cd2ee2 JN |
1914 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
1915 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1916 | /* | |
1917 | * This is a big fat ugly hack. | |
1918 | * | |
1919 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1920 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1921 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1922 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1923 | * max, not what it tells us to use. | |
1924 | * | |
1925 | * Note: This will still be broken if the eDP panel is not lit | |
1926 | * up by the BIOS, and thus we can't get the mode at module | |
1927 | * load. | |
1928 | */ | |
1929 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1930 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1931 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1932 | } | |
045ac3b5 JB |
1933 | } |
1934 | ||
34eb7579 | 1935 | static bool is_edp_psr(struct intel_dp *intel_dp) |
2293bb5c | 1936 | { |
34eb7579 | 1937 | return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; |
2293bb5c SK |
1938 | } |
1939 | ||
2b28bb1b RV |
1940 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1941 | { | |
1942 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1943 | ||
18b5992c | 1944 | if (!HAS_PSR(dev)) |
2b28bb1b RV |
1945 | return false; |
1946 | ||
18b5992c | 1947 | return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE; |
2b28bb1b RV |
1948 | } |
1949 | ||
1950 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1951 | struct edp_vsc_psr *vsc_psr) | |
1952 | { | |
1953 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1954 | struct drm_device *dev = dig_port->base.base.dev; | |
1955 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1956 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1957 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
1958 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
1959 | uint32_t *data = (uint32_t *) vsc_psr; | |
1960 | unsigned int i; | |
1961 | ||
1962 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
1963 | the video DIP being updated before program video DIP data buffer | |
1964 | registers for DIP being updated. */ | |
1965 | I915_WRITE(ctl_reg, 0); | |
1966 | POSTING_READ(ctl_reg); | |
1967 | ||
1968 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
1969 | if (i < sizeof(struct edp_vsc_psr)) | |
1970 | I915_WRITE(data_reg + i, *data++); | |
1971 | else | |
1972 | I915_WRITE(data_reg + i, 0); | |
1973 | } | |
1974 | ||
1975 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
1976 | POSTING_READ(ctl_reg); | |
1977 | } | |
1978 | ||
1979 | static void intel_edp_psr_setup(struct intel_dp *intel_dp) | |
1980 | { | |
1981 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1982 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1983 | struct edp_vsc_psr psr_vsc; | |
1984 | ||
2b28bb1b RV |
1985 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ |
1986 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
1987 | psr_vsc.sdp_header.HB0 = 0; | |
1988 | psr_vsc.sdp_header.HB1 = 0x7; | |
1989 | psr_vsc.sdp_header.HB2 = 0x2; | |
1990 | psr_vsc.sdp_header.HB3 = 0x8; | |
1991 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
1992 | ||
1993 | /* Avoid continuous PSR exit by masking memup and hpd */ | |
18b5992c | 1994 | I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP | |
0cc4b699 | 1995 | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); |
2b28bb1b RV |
1996 | } |
1997 | ||
1998 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
1999 | { | |
0e0ae652 RV |
2000 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
2001 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b | 2002 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd | 2003 | uint32_t aux_clock_divider; |
2b28bb1b RV |
2004 | int precharge = 0x3; |
2005 | int msg_size = 5; /* Header(4) + Message(1) */ | |
0e0ae652 | 2006 | bool only_standby = false; |
2b28bb1b | 2007 | |
ec5b01dd DL |
2008 | aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0); |
2009 | ||
0e0ae652 RV |
2010 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) |
2011 | only_standby = true; | |
2012 | ||
2b28bb1b | 2013 | /* Enable PSR in sink */ |
0e0ae652 | 2014 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) |
9d1a1031 JN |
2015 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
2016 | DP_PSR_ENABLE & ~DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b | 2017 | else |
9d1a1031 JN |
2018 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
2019 | DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b RV |
2020 | |
2021 | /* Setup AUX registers */ | |
18b5992c BW |
2022 | I915_WRITE(EDP_PSR_AUX_DATA1(dev), EDP_PSR_DPCD_COMMAND); |
2023 | I915_WRITE(EDP_PSR_AUX_DATA2(dev), EDP_PSR_DPCD_NORMAL_OPERATION); | |
2024 | I915_WRITE(EDP_PSR_AUX_CTL(dev), | |
2b28bb1b RV |
2025 | DP_AUX_CH_CTL_TIME_OUT_400us | |
2026 | (msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
2027 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
2028 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
2029 | } | |
2030 | ||
2031 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
2032 | { | |
0e0ae652 RV |
2033 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
2034 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b RV |
2035 | struct drm_i915_private *dev_priv = dev->dev_private; |
2036 | uint32_t max_sleep_time = 0x1f; | |
2037 | uint32_t idle_frames = 1; | |
2038 | uint32_t val = 0x0; | |
ed8546ac | 2039 | const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES; |
0e0ae652 RV |
2040 | bool only_standby = false; |
2041 | ||
2042 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) | |
2043 | only_standby = true; | |
2b28bb1b | 2044 | |
0e0ae652 | 2045 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) { |
2b28bb1b RV |
2046 | val |= EDP_PSR_LINK_STANDBY; |
2047 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
2048 | val |= EDP_PSR_TP1_TIME_0us; | |
2049 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
82c56254 | 2050 | val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0; |
2b28bb1b RV |
2051 | } else |
2052 | val |= EDP_PSR_LINK_DISABLE; | |
2053 | ||
18b5992c | 2054 | I915_WRITE(EDP_PSR_CTL(dev), val | |
24bd9bf5 | 2055 | (IS_BROADWELL(dev) ? 0 : link_entry_time) | |
2b28bb1b RV |
2056 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | |
2057 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
2058 | EDP_PSR_ENABLE); | |
2059 | } | |
2060 | ||
3f51e471 RV |
2061 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
2062 | { | |
2063 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
2064 | struct drm_device *dev = dig_port->base.base.dev; | |
2065 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2066 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
2067 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3f51e471 | 2068 | |
f0355c4a | 2069 | lockdep_assert_held(&dev_priv->psr.lock); |
f0355c4a DV |
2070 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
2071 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
2072 | ||
a031d709 RV |
2073 | dev_priv->psr.source_ok = false; |
2074 | ||
9ca15301 | 2075 | if (IS_HASWELL(dev) && dig_port->port != PORT_A) { |
3f51e471 | 2076 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); |
3f51e471 RV |
2077 | return false; |
2078 | } | |
2079 | ||
d330a953 | 2080 | if (!i915.enable_psr) { |
105b7c11 | 2081 | DRM_DEBUG_KMS("PSR disable by flag\n"); |
105b7c11 RV |
2082 | return false; |
2083 | } | |
2084 | ||
4c8c7000 RV |
2085 | /* Below limitations aren't valid for Broadwell */ |
2086 | if (IS_BROADWELL(dev)) | |
2087 | goto out; | |
2088 | ||
3f51e471 RV |
2089 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & |
2090 | S3D_ENABLE) { | |
2091 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
3f51e471 RV |
2092 | return false; |
2093 | } | |
2094 | ||
ca73b4f0 | 2095 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { |
3f51e471 | 2096 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); |
3f51e471 RV |
2097 | return false; |
2098 | } | |
2099 | ||
4c8c7000 | 2100 | out: |
a031d709 | 2101 | dev_priv->psr.source_ok = true; |
3f51e471 RV |
2102 | return true; |
2103 | } | |
2104 | ||
3d739d92 | 2105 | static void intel_edp_psr_do_enable(struct intel_dp *intel_dp) |
2b28bb1b | 2106 | { |
7c8f8a70 RV |
2107 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2108 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2109 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2b28bb1b | 2110 | |
3638379c DV |
2111 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); |
2112 | WARN_ON(dev_priv->psr.active); | |
f0355c4a | 2113 | lockdep_assert_held(&dev_priv->psr.lock); |
2b28bb1b | 2114 | |
2b28bb1b RV |
2115 | /* Enable PSR on the panel */ |
2116 | intel_edp_psr_enable_sink(intel_dp); | |
2117 | ||
2118 | /* Enable PSR on the host */ | |
2119 | intel_edp_psr_enable_source(intel_dp); | |
7c8f8a70 | 2120 | |
7c8f8a70 | 2121 | dev_priv->psr.active = true; |
2b28bb1b RV |
2122 | } |
2123 | ||
3d739d92 RV |
2124 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
2125 | { | |
2126 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
109fc2ad | 2127 | struct drm_i915_private *dev_priv = dev->dev_private; |
3d739d92 | 2128 | |
4704c573 RV |
2129 | if (!HAS_PSR(dev)) { |
2130 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
2131 | return; | |
2132 | } | |
2133 | ||
34eb7579 RV |
2134 | if (!is_edp_psr(intel_dp)) { |
2135 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
2136 | return; | |
2137 | } | |
2138 | ||
f0355c4a | 2139 | mutex_lock(&dev_priv->psr.lock); |
109fc2ad DV |
2140 | if (dev_priv->psr.enabled) { |
2141 | DRM_DEBUG_KMS("PSR already in use\n"); | |
f0355c4a | 2142 | mutex_unlock(&dev_priv->psr.lock); |
109fc2ad DV |
2143 | return; |
2144 | } | |
2145 | ||
9ca15301 DV |
2146 | dev_priv->psr.busy_frontbuffer_bits = 0; |
2147 | ||
16487254 RV |
2148 | /* Setup PSR once */ |
2149 | intel_edp_psr_setup(intel_dp); | |
2150 | ||
7c8f8a70 | 2151 | if (intel_edp_psr_match_conditions(intel_dp)) |
9ca15301 | 2152 | dev_priv->psr.enabled = intel_dp; |
f0355c4a | 2153 | mutex_unlock(&dev_priv->psr.lock); |
3d739d92 RV |
2154 | } |
2155 | ||
2b28bb1b RV |
2156 | void intel_edp_psr_disable(struct intel_dp *intel_dp) |
2157 | { | |
2158 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2159 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2160 | ||
f0355c4a DV |
2161 | mutex_lock(&dev_priv->psr.lock); |
2162 | if (!dev_priv->psr.enabled) { | |
2163 | mutex_unlock(&dev_priv->psr.lock); | |
2164 | return; | |
2165 | } | |
2166 | ||
3638379c DV |
2167 | if (dev_priv->psr.active) { |
2168 | I915_WRITE(EDP_PSR_CTL(dev), | |
2169 | I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE); | |
2170 | ||
2171 | /* Wait till PSR is idle */ | |
2172 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) & | |
2173 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) | |
2174 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
2b28bb1b | 2175 | |
3638379c DV |
2176 | dev_priv->psr.active = false; |
2177 | } else { | |
2178 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); | |
2179 | } | |
7c8f8a70 | 2180 | |
2807cf69 | 2181 | dev_priv->psr.enabled = NULL; |
f0355c4a | 2182 | mutex_unlock(&dev_priv->psr.lock); |
9ca15301 DV |
2183 | |
2184 | cancel_delayed_work_sync(&dev_priv->psr.work); | |
2b28bb1b RV |
2185 | } |
2186 | ||
f02a326e | 2187 | static void intel_edp_psr_work(struct work_struct *work) |
7c8f8a70 RV |
2188 | { |
2189 | struct drm_i915_private *dev_priv = | |
2190 | container_of(work, typeof(*dev_priv), psr.work.work); | |
2807cf69 DV |
2191 | struct intel_dp *intel_dp = dev_priv->psr.enabled; |
2192 | ||
f0355c4a DV |
2193 | mutex_lock(&dev_priv->psr.lock); |
2194 | intel_dp = dev_priv->psr.enabled; | |
2195 | ||
2807cf69 | 2196 | if (!intel_dp) |
f0355c4a | 2197 | goto unlock; |
2807cf69 | 2198 | |
9ca15301 DV |
2199 | /* |
2200 | * The delayed work can race with an invalidate hence we need to | |
2201 | * recheck. Since psr_flush first clears this and then reschedules we | |
2202 | * won't ever miss a flush when bailing out here. | |
2203 | */ | |
2204 | if (dev_priv->psr.busy_frontbuffer_bits) | |
2205 | goto unlock; | |
2206 | ||
2207 | intel_edp_psr_do_enable(intel_dp); | |
f0355c4a DV |
2208 | unlock: |
2209 | mutex_unlock(&dev_priv->psr.lock); | |
3d739d92 RV |
2210 | } |
2211 | ||
9ca15301 | 2212 | static void intel_edp_psr_do_exit(struct drm_device *dev) |
7c8f8a70 RV |
2213 | { |
2214 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2215 | ||
3638379c DV |
2216 | if (dev_priv->psr.active) { |
2217 | u32 val = I915_READ(EDP_PSR_CTL(dev)); | |
2218 | ||
2219 | WARN_ON(!(val & EDP_PSR_ENABLE)); | |
2220 | ||
2221 | I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE); | |
2222 | ||
2223 | dev_priv->psr.active = false; | |
2224 | } | |
7c8f8a70 | 2225 | |
9ca15301 DV |
2226 | } |
2227 | ||
2228 | void intel_edp_psr_invalidate(struct drm_device *dev, | |
2229 | unsigned frontbuffer_bits) | |
2230 | { | |
2231 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2232 | struct drm_crtc *crtc; | |
2233 | enum pipe pipe; | |
2234 | ||
9ca15301 DV |
2235 | mutex_lock(&dev_priv->psr.lock); |
2236 | if (!dev_priv->psr.enabled) { | |
2237 | mutex_unlock(&dev_priv->psr.lock); | |
2238 | return; | |
2239 | } | |
2240 | ||
2241 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
2242 | pipe = to_intel_crtc(crtc)->pipe; | |
2243 | ||
2244 | intel_edp_psr_do_exit(dev); | |
2245 | ||
2246 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
2247 | ||
2248 | dev_priv->psr.busy_frontbuffer_bits |= frontbuffer_bits; | |
2249 | mutex_unlock(&dev_priv->psr.lock); | |
2250 | } | |
2251 | ||
2252 | void intel_edp_psr_flush(struct drm_device *dev, | |
2253 | unsigned frontbuffer_bits) | |
2254 | { | |
2255 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2256 | struct drm_crtc *crtc; | |
2257 | enum pipe pipe; | |
2258 | ||
9ca15301 DV |
2259 | mutex_lock(&dev_priv->psr.lock); |
2260 | if (!dev_priv->psr.enabled) { | |
2261 | mutex_unlock(&dev_priv->psr.lock); | |
2262 | return; | |
2263 | } | |
2264 | ||
2265 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
2266 | pipe = to_intel_crtc(crtc)->pipe; | |
2267 | dev_priv->psr.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
2268 | ||
2269 | /* | |
2270 | * On Haswell sprite plane updates don't result in a psr invalidating | |
2271 | * signal in the hardware. Which means we need to manually fake this in | |
2272 | * software for all flushes, not just when we've seen a preceding | |
2273 | * invalidation through frontbuffer rendering. | |
2274 | */ | |
2275 | if (IS_HASWELL(dev) && | |
2276 | (frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe))) | |
2277 | intel_edp_psr_do_exit(dev); | |
2278 | ||
2279 | if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits) | |
2280 | schedule_delayed_work(&dev_priv->psr.work, | |
2281 | msecs_to_jiffies(100)); | |
f0355c4a | 2282 | mutex_unlock(&dev_priv->psr.lock); |
7c8f8a70 RV |
2283 | } |
2284 | ||
2285 | void intel_edp_psr_init(struct drm_device *dev) | |
2286 | { | |
2287 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2288 | ||
7c8f8a70 | 2289 | INIT_DELAYED_WORK(&dev_priv->psr.work, intel_edp_psr_work); |
f0355c4a | 2290 | mutex_init(&dev_priv->psr.lock); |
7c8f8a70 RV |
2291 | } |
2292 | ||
e8cb4558 | 2293 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2294 | { |
e8cb4558 | 2295 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 ID |
2296 | enum port port = dp_to_dig_port(intel_dp)->port; |
2297 | struct drm_device *dev = encoder->base.dev; | |
6cb49835 DV |
2298 | |
2299 | /* Make sure the panel is off before trying to change the mode. But also | |
2300 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2301 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2302 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2303 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2304 | intel_edp_panel_off(intel_dp); |
3739850b DV |
2305 | |
2306 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
982a3866 | 2307 | if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |
3739850b | 2308 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2309 | } |
2310 | ||
49277c31 | 2311 | static void g4x_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2312 | { |
2bd2ad64 | 2313 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2314 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2315 | |
49277c31 VS |
2316 | if (port != PORT_A) |
2317 | return; | |
2318 | ||
2319 | intel_dp_link_down(intel_dp); | |
2320 | ironlake_edp_pll_off(intel_dp); | |
2321 | } | |
2322 | ||
2323 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2324 | { | |
2325 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2326 | ||
2327 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2328 | } |
2329 | ||
580d3811 VS |
2330 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2331 | { | |
2332 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2333 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2334 | struct drm_device *dev = encoder->base.dev; | |
2335 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2336 | struct intel_crtc *intel_crtc = | |
2337 | to_intel_crtc(encoder->base.crtc); | |
2338 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2339 | enum pipe pipe = intel_crtc->pipe; | |
2340 | u32 val; | |
2341 | ||
2342 | intel_dp_link_down(intel_dp); | |
2343 | ||
2344 | mutex_lock(&dev_priv->dpio_lock); | |
2345 | ||
2346 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2347 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2348 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2349 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2350 | |
97fd4d5c VS |
2351 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2352 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2353 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2354 | ||
2355 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2356 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2357 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2358 | ||
2359 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2360 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2361 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2362 | |
2363 | mutex_unlock(&dev_priv->dpio_lock); | |
2364 | } | |
2365 | ||
e8cb4558 | 2366 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2367 | { |
e8cb4558 DV |
2368 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2369 | struct drm_device *dev = encoder->base.dev; | |
2370 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2371 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 2372 | |
0c33d8d7 DV |
2373 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2374 | return; | |
5d613501 | 2375 | |
24f3e092 | 2376 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2377 | intel_edp_panel_on(intel_dp); |
1e0560e0 | 2378 | intel_edp_panel_vdd_off(intel_dp, true); |
43072a45 VS |
2379 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
2380 | intel_dp_start_link_train(intel_dp); | |
33a34e4e | 2381 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2382 | intel_dp_stop_link_train(intel_dp); |
ab1f90f9 | 2383 | } |
89b667f8 | 2384 | |
ecff4f3b JN |
2385 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2386 | { | |
828f5c6e JN |
2387 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2388 | ||
ecff4f3b | 2389 | intel_enable_dp(encoder); |
4be73780 | 2390 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2391 | } |
89b667f8 | 2392 | |
ab1f90f9 JN |
2393 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2394 | { | |
828f5c6e JN |
2395 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2396 | ||
4be73780 | 2397 | intel_edp_backlight_on(intel_dp); |
d240f20f JB |
2398 | } |
2399 | ||
ecff4f3b | 2400 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2401 | { |
2402 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2403 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2404 | ||
8ac33ed3 DV |
2405 | intel_dp_prepare(encoder); |
2406 | ||
d41f1efb DV |
2407 | /* Only ilk+ has port A */ |
2408 | if (dport->port == PORT_A) { | |
2409 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2410 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2411 | } |
ab1f90f9 JN |
2412 | } |
2413 | ||
a4a5d2f8 VS |
2414 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2415 | enum pipe pipe) | |
2416 | { | |
2417 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2418 | struct intel_encoder *encoder; | |
2419 | ||
2420 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2421 | ||
2422 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
2423 | base.head) { | |
2424 | struct intel_dp *intel_dp; | |
773538e8 | 2425 | enum port port; |
a4a5d2f8 VS |
2426 | |
2427 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2428 | continue; | |
2429 | ||
2430 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2431 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2432 | |
2433 | if (intel_dp->pps_pipe != pipe) | |
2434 | continue; | |
2435 | ||
2436 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2437 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 VS |
2438 | |
2439 | /* make sure vdd is off before we steal it */ | |
2440 | edp_panel_vdd_off_sync(intel_dp); | |
2441 | ||
2442 | intel_dp->pps_pipe = INVALID_PIPE; | |
2443 | } | |
2444 | } | |
2445 | ||
2446 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2447 | { | |
2448 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2449 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2450 | struct drm_device *dev = encoder->base.dev; | |
2451 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2452 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
2453 | struct edp_power_seq power_seq; | |
2454 | ||
2455 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2456 | ||
2457 | if (intel_dp->pps_pipe == crtc->pipe) | |
2458 | return; | |
2459 | ||
2460 | /* | |
2461 | * If another power sequencer was being used on this | |
2462 | * port previously make sure to turn off vdd there while | |
2463 | * we still have control of it. | |
2464 | */ | |
2465 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
2466 | edp_panel_vdd_off_sync(intel_dp); | |
2467 | ||
2468 | /* | |
2469 | * We may be stealing the power | |
2470 | * sequencer from another port. | |
2471 | */ | |
2472 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2473 | ||
2474 | /* now it's all ours */ | |
2475 | intel_dp->pps_pipe = crtc->pipe; | |
2476 | ||
2477 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2478 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2479 | ||
2480 | /* init power sequencer on this pipe and port */ | |
2481 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
2482 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
2483 | &power_seq); | |
2484 | } | |
2485 | ||
ab1f90f9 | 2486 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2487 | { |
2bd2ad64 | 2488 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2489 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2490 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2491 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2492 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2493 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2494 | int pipe = intel_crtc->pipe; |
2495 | u32 val; | |
a4fc5ed6 | 2496 | |
ab1f90f9 | 2497 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2498 | |
ab3c759a | 2499 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2500 | val = 0; |
2501 | if (pipe) | |
2502 | val |= (1<<21); | |
2503 | else | |
2504 | val &= ~(1<<21); | |
2505 | val |= 0x001000c4; | |
ab3c759a CML |
2506 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2507 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2508 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2509 | |
ab1f90f9 JN |
2510 | mutex_unlock(&dev_priv->dpio_lock); |
2511 | ||
2cac613b | 2512 | if (is_edp(intel_dp)) { |
773538e8 | 2513 | pps_lock(intel_dp); |
a4a5d2f8 | 2514 | vlv_init_panel_power_sequencer(intel_dp); |
773538e8 | 2515 | pps_unlock(intel_dp); |
2cac613b | 2516 | } |
bf13e81b | 2517 | |
ab1f90f9 JN |
2518 | intel_enable_dp(encoder); |
2519 | ||
e4607fcf | 2520 | vlv_wait_port_ready(dev_priv, dport); |
89b667f8 JB |
2521 | } |
2522 | ||
ecff4f3b | 2523 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2524 | { |
2525 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2526 | struct drm_device *dev = encoder->base.dev; | |
2527 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2528 | struct intel_crtc *intel_crtc = |
2529 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2530 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2531 | int pipe = intel_crtc->pipe; |
89b667f8 | 2532 | |
8ac33ed3 DV |
2533 | intel_dp_prepare(encoder); |
2534 | ||
89b667f8 | 2535 | /* Program Tx lane resets to default */ |
0980a60f | 2536 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2537 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2538 | DPIO_PCS_TX_LANE2_RESET | |
2539 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2540 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2541 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2542 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2543 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2544 | DPIO_PCS_CLK_SOFT_RESET); | |
2545 | ||
2546 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2547 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2548 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2549 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2550 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2551 | } |
2552 | ||
e4a1d846 CML |
2553 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2554 | { | |
2555 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2556 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2557 | struct drm_device *dev = encoder->base.dev; | |
2558 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2559 | struct intel_crtc *intel_crtc = |
2560 | to_intel_crtc(encoder->base.crtc); | |
2561 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2562 | int pipe = intel_crtc->pipe; | |
2563 | int data, i; | |
949c1d43 | 2564 | u32 val; |
e4a1d846 | 2565 | |
e4a1d846 | 2566 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 VS |
2567 | |
2568 | /* Deassert soft data lane reset*/ | |
97fd4d5c | 2569 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2570 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2571 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2572 | ||
2573 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2574 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2575 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2576 | ||
2577 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2578 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2579 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2580 | |
97fd4d5c | 2581 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2582 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2583 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2584 | |
2585 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2586 | for (i = 0; i < 4; i++) { |
2587 | /* Set the latency optimal bit */ | |
2588 | data = (i == 1) ? 0x0 : 0x6; | |
2589 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2590 | data << DPIO_FRC_LATENCY_SHFIT); | |
2591 | ||
2592 | /* Set the upar bit */ | |
2593 | data = (i == 1) ? 0x0 : 0x1; | |
2594 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2595 | data << DPIO_UPAR_SHIFT); | |
2596 | } | |
2597 | ||
2598 | /* Data lane stagger programming */ | |
2599 | /* FIXME: Fix up value only after power analysis */ | |
2600 | ||
2601 | mutex_unlock(&dev_priv->dpio_lock); | |
2602 | ||
2603 | if (is_edp(intel_dp)) { | |
773538e8 | 2604 | pps_lock(intel_dp); |
a4a5d2f8 | 2605 | vlv_init_panel_power_sequencer(intel_dp); |
773538e8 | 2606 | pps_unlock(intel_dp); |
e4a1d846 CML |
2607 | } |
2608 | ||
2609 | intel_enable_dp(encoder); | |
2610 | ||
2611 | vlv_wait_port_ready(dev_priv, dport); | |
2612 | } | |
2613 | ||
9197c88b VS |
2614 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2615 | { | |
2616 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2617 | struct drm_device *dev = encoder->base.dev; | |
2618 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2619 | struct intel_crtc *intel_crtc = | |
2620 | to_intel_crtc(encoder->base.crtc); | |
2621 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2622 | enum pipe pipe = intel_crtc->pipe; | |
2623 | u32 val; | |
2624 | ||
625695f8 VS |
2625 | intel_dp_prepare(encoder); |
2626 | ||
9197c88b VS |
2627 | mutex_lock(&dev_priv->dpio_lock); |
2628 | ||
b9e5ac3c VS |
2629 | /* program left/right clock distribution */ |
2630 | if (pipe != PIPE_B) { | |
2631 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2632 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2633 | if (ch == DPIO_CH0) | |
2634 | val |= CHV_BUFLEFTENA1_FORCE; | |
2635 | if (ch == DPIO_CH1) | |
2636 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2637 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2638 | } else { | |
2639 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2640 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2641 | if (ch == DPIO_CH0) | |
2642 | val |= CHV_BUFLEFTENA2_FORCE; | |
2643 | if (ch == DPIO_CH1) | |
2644 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2645 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2646 | } | |
2647 | ||
9197c88b VS |
2648 | /* program clock channel usage */ |
2649 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2650 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2651 | if (pipe != PIPE_B) | |
2652 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2653 | else | |
2654 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2655 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2656 | ||
2657 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2658 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2659 | if (pipe != PIPE_B) | |
2660 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2661 | else | |
2662 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2663 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2664 | ||
2665 | /* | |
2666 | * This a a bit weird since generally CL | |
2667 | * matches the pipe, but here we need to | |
2668 | * pick the CL based on the port. | |
2669 | */ | |
2670 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2671 | if (pipe != PIPE_B) | |
2672 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2673 | else | |
2674 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2675 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2676 | ||
2677 | mutex_unlock(&dev_priv->dpio_lock); | |
2678 | } | |
2679 | ||
a4fc5ed6 | 2680 | /* |
df0c237d JB |
2681 | * Native read with retry for link status and receiver capability reads for |
2682 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2683 | * |
2684 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2685 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2686 | */ |
9d1a1031 JN |
2687 | static ssize_t |
2688 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2689 | void *buffer, size_t size) | |
a4fc5ed6 | 2690 | { |
9d1a1031 JN |
2691 | ssize_t ret; |
2692 | int i; | |
61da5fab | 2693 | |
61da5fab | 2694 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2695 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2696 | if (ret == size) | |
2697 | return ret; | |
61da5fab JB |
2698 | msleep(1); |
2699 | } | |
a4fc5ed6 | 2700 | |
9d1a1031 | 2701 | return ret; |
a4fc5ed6 KP |
2702 | } |
2703 | ||
2704 | /* | |
2705 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2706 | * link status information | |
2707 | */ | |
2708 | static bool | |
93f62dad | 2709 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2710 | { |
9d1a1031 JN |
2711 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2712 | DP_LANE0_1_STATUS, | |
2713 | link_status, | |
2714 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2715 | } |
2716 | ||
1100244e | 2717 | /* These are source-specific values. */ |
a4fc5ed6 | 2718 | static uint8_t |
1a2eb460 | 2719 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2720 | { |
30add22d | 2721 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2722 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2723 | |
9576c27f | 2724 | if (IS_VALLEYVIEW(dev)) |
bd60018a | 2725 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2726 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2727 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2728 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2729 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2730 | else |
bd60018a | 2731 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2732 | } |
2733 | ||
2734 | static uint8_t | |
2735 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2736 | { | |
30add22d | 2737 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2738 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2739 | |
9576c27f | 2740 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
d6c0d722 | 2741 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2742 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2743 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2744 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2745 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2746 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2747 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2748 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2749 | default: |
bd60018a | 2750 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2751 | } |
e2fa6fba P |
2752 | } else if (IS_VALLEYVIEW(dev)) { |
2753 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2754 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2755 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2756 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2757 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2758 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2759 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2760 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2761 | default: |
bd60018a | 2762 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2763 | } |
bc7d38a4 | 2764 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2765 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2766 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2767 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2768 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2769 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2770 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2771 | default: |
bd60018a | 2772 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2773 | } |
2774 | } else { | |
2775 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2776 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2777 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2778 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2779 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2780 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2781 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2782 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2783 | default: |
bd60018a | 2784 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2785 | } |
a4fc5ed6 KP |
2786 | } |
2787 | } | |
2788 | ||
e2fa6fba P |
2789 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2790 | { | |
2791 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2792 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2793 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2794 | struct intel_crtc *intel_crtc = |
2795 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2796 | unsigned long demph_reg_value, preemph_reg_value, |
2797 | uniqtranscale_reg_value; | |
2798 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2799 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2800 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2801 | |
2802 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2803 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2804 | preemph_reg_value = 0x0004000; |
2805 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2806 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2807 | demph_reg_value = 0x2B405555; |
2808 | uniqtranscale_reg_value = 0x552AB83A; | |
2809 | break; | |
bd60018a | 2810 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2811 | demph_reg_value = 0x2B404040; |
2812 | uniqtranscale_reg_value = 0x5548B83A; | |
2813 | break; | |
bd60018a | 2814 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2815 | demph_reg_value = 0x2B245555; |
2816 | uniqtranscale_reg_value = 0x5560B83A; | |
2817 | break; | |
bd60018a | 2818 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
2819 | demph_reg_value = 0x2B405555; |
2820 | uniqtranscale_reg_value = 0x5598DA3A; | |
2821 | break; | |
2822 | default: | |
2823 | return 0; | |
2824 | } | |
2825 | break; | |
bd60018a | 2826 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
2827 | preemph_reg_value = 0x0002000; |
2828 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2829 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2830 | demph_reg_value = 0x2B404040; |
2831 | uniqtranscale_reg_value = 0x5552B83A; | |
2832 | break; | |
bd60018a | 2833 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2834 | demph_reg_value = 0x2B404848; |
2835 | uniqtranscale_reg_value = 0x5580B83A; | |
2836 | break; | |
bd60018a | 2837 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2838 | demph_reg_value = 0x2B404040; |
2839 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2840 | break; | |
2841 | default: | |
2842 | return 0; | |
2843 | } | |
2844 | break; | |
bd60018a | 2845 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
2846 | preemph_reg_value = 0x0000000; |
2847 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2848 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2849 | demph_reg_value = 0x2B305555; |
2850 | uniqtranscale_reg_value = 0x5570B83A; | |
2851 | break; | |
bd60018a | 2852 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2853 | demph_reg_value = 0x2B2B4040; |
2854 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2855 | break; | |
2856 | default: | |
2857 | return 0; | |
2858 | } | |
2859 | break; | |
bd60018a | 2860 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
2861 | preemph_reg_value = 0x0006000; |
2862 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2863 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2864 | demph_reg_value = 0x1B405555; |
2865 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2866 | break; | |
2867 | default: | |
2868 | return 0; | |
2869 | } | |
2870 | break; | |
2871 | default: | |
2872 | return 0; | |
2873 | } | |
2874 | ||
0980a60f | 2875 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
2876 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
2877 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
2878 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 2879 | uniqtranscale_reg_value); |
ab3c759a CML |
2880 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
2881 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
2882 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
2883 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 2884 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
2885 | |
2886 | return 0; | |
2887 | } | |
2888 | ||
e4a1d846 CML |
2889 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
2890 | { | |
2891 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2892 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2893 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2894 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 2895 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
2896 | uint8_t train_set = intel_dp->train_set[0]; |
2897 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
2898 | enum pipe pipe = intel_crtc->pipe; |
2899 | int i; | |
e4a1d846 CML |
2900 | |
2901 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2902 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 2903 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 2904 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
2905 | deemph_reg_value = 128; |
2906 | margin_reg_value = 52; | |
2907 | break; | |
bd60018a | 2908 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
2909 | deemph_reg_value = 128; |
2910 | margin_reg_value = 77; | |
2911 | break; | |
bd60018a | 2912 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
2913 | deemph_reg_value = 128; |
2914 | margin_reg_value = 102; | |
2915 | break; | |
bd60018a | 2916 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
2917 | deemph_reg_value = 128; |
2918 | margin_reg_value = 154; | |
2919 | /* FIXME extra to set for 1200 */ | |
2920 | break; | |
2921 | default: | |
2922 | return 0; | |
2923 | } | |
2924 | break; | |
bd60018a | 2925 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 2926 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 2927 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
2928 | deemph_reg_value = 85; |
2929 | margin_reg_value = 78; | |
2930 | break; | |
bd60018a | 2931 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
2932 | deemph_reg_value = 85; |
2933 | margin_reg_value = 116; | |
2934 | break; | |
bd60018a | 2935 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
2936 | deemph_reg_value = 85; |
2937 | margin_reg_value = 154; | |
2938 | break; | |
2939 | default: | |
2940 | return 0; | |
2941 | } | |
2942 | break; | |
bd60018a | 2943 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 2944 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 2945 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
2946 | deemph_reg_value = 64; |
2947 | margin_reg_value = 104; | |
2948 | break; | |
bd60018a | 2949 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
2950 | deemph_reg_value = 64; |
2951 | margin_reg_value = 154; | |
2952 | break; | |
2953 | default: | |
2954 | return 0; | |
2955 | } | |
2956 | break; | |
bd60018a | 2957 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 2958 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 2959 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
2960 | deemph_reg_value = 43; |
2961 | margin_reg_value = 154; | |
2962 | break; | |
2963 | default: | |
2964 | return 0; | |
2965 | } | |
2966 | break; | |
2967 | default: | |
2968 | return 0; | |
2969 | } | |
2970 | ||
2971 | mutex_lock(&dev_priv->dpio_lock); | |
2972 | ||
2973 | /* Clear calc init */ | |
1966e59e VS |
2974 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
2975 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
2976 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
2977 | ||
2978 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
2979 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
2980 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
2981 | |
2982 | /* Program swing deemph */ | |
f72df8db VS |
2983 | for (i = 0; i < 4; i++) { |
2984 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
2985 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
2986 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
2987 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
2988 | } | |
e4a1d846 CML |
2989 | |
2990 | /* Program swing margin */ | |
f72df8db VS |
2991 | for (i = 0; i < 4; i++) { |
2992 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
2993 | val &= ~DPIO_SWING_MARGIN000_MASK; |
2994 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
2995 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
2996 | } | |
e4a1d846 CML |
2997 | |
2998 | /* Disable unique transition scale */ | |
f72df8db VS |
2999 | for (i = 0; i < 4; i++) { |
3000 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3001 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3002 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3003 | } | |
e4a1d846 CML |
3004 | |
3005 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3006 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3007 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3008 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3009 | |
3010 | /* | |
3011 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3012 | * for ch1. Might be a typo in the doc. | |
3013 | * For now, for this unique transition scale selection, set bit | |
3014 | * 27 for ch0 and ch1. | |
3015 | */ | |
f72df8db VS |
3016 | for (i = 0; i < 4; i++) { |
3017 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3018 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3019 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3020 | } | |
e4a1d846 | 3021 | |
f72df8db VS |
3022 | for (i = 0; i < 4; i++) { |
3023 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3024 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3025 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3026 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3027 | } | |
e4a1d846 CML |
3028 | } |
3029 | ||
3030 | /* Start swing calculation */ | |
1966e59e VS |
3031 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3032 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3033 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3034 | ||
3035 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3036 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3037 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3038 | |
3039 | /* LRC Bypass */ | |
3040 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3041 | val |= DPIO_LRC_BYPASS; | |
3042 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3043 | ||
3044 | mutex_unlock(&dev_priv->dpio_lock); | |
3045 | ||
3046 | return 0; | |
3047 | } | |
3048 | ||
a4fc5ed6 | 3049 | static void |
0301b3ac JN |
3050 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3051 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3052 | { |
3053 | uint8_t v = 0; | |
3054 | uint8_t p = 0; | |
3055 | int lane; | |
1a2eb460 KP |
3056 | uint8_t voltage_max; |
3057 | uint8_t preemph_max; | |
a4fc5ed6 | 3058 | |
33a34e4e | 3059 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3060 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3061 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3062 | |
3063 | if (this_v > v) | |
3064 | v = this_v; | |
3065 | if (this_p > p) | |
3066 | p = this_p; | |
3067 | } | |
3068 | ||
1a2eb460 | 3069 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3070 | if (v >= voltage_max) |
3071 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3072 | |
1a2eb460 KP |
3073 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3074 | if (p >= preemph_max) | |
3075 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3076 | |
3077 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3078 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3079 | } |
3080 | ||
3081 | static uint32_t | |
f0a3424e | 3082 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3083 | { |
3cf2efb1 | 3084 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3085 | |
3cf2efb1 | 3086 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3087 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3088 | default: |
3089 | signal_levels |= DP_VOLTAGE_0_4; | |
3090 | break; | |
bd60018a | 3091 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3092 | signal_levels |= DP_VOLTAGE_0_6; |
3093 | break; | |
bd60018a | 3094 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3095 | signal_levels |= DP_VOLTAGE_0_8; |
3096 | break; | |
bd60018a | 3097 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3098 | signal_levels |= DP_VOLTAGE_1_2; |
3099 | break; | |
3100 | } | |
3cf2efb1 | 3101 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3102 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3103 | default: |
3104 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3105 | break; | |
bd60018a | 3106 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3107 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3108 | break; | |
bd60018a | 3109 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3110 | signal_levels |= DP_PRE_EMPHASIS_6; |
3111 | break; | |
bd60018a | 3112 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3113 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3114 | break; | |
3115 | } | |
3116 | return signal_levels; | |
3117 | } | |
3118 | ||
e3421a18 ZW |
3119 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3120 | static uint32_t | |
3121 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
3122 | { | |
3c5a62b5 YL |
3123 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3124 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3125 | switch (signal_levels) { | |
bd60018a SJ |
3126 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3127 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3128 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3129 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3130 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3131 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3132 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3133 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3134 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3135 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3136 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3137 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3138 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3139 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3140 | default: |
3c5a62b5 YL |
3141 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3142 | "0x%x\n", signal_levels); | |
3143 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3144 | } |
3145 | } | |
3146 | ||
1a2eb460 KP |
3147 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3148 | static uint32_t | |
3149 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
3150 | { | |
3151 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3152 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3153 | switch (signal_levels) { | |
bd60018a | 3154 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3155 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3156 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3157 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3158 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3159 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3160 | ||
bd60018a | 3161 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3162 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3163 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3164 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3165 | ||
bd60018a | 3166 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3167 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3168 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3169 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3170 | ||
3171 | default: | |
3172 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3173 | "0x%x\n", signal_levels); | |
3174 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3175 | } | |
3176 | } | |
3177 | ||
d6c0d722 PZ |
3178 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3179 | static uint32_t | |
f0a3424e | 3180 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3181 | { |
d6c0d722 PZ |
3182 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3183 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3184 | switch (signal_levels) { | |
bd60018a | 3185 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3186 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3187 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3188 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3189 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3190 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3191 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3192 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3193 | |
bd60018a | 3194 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3195 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3196 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3197 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3198 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3199 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3200 | |
bd60018a | 3201 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3202 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3203 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3204 | return DDI_BUF_TRANS_SELECT(8); |
d6c0d722 PZ |
3205 | default: |
3206 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3207 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3208 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3209 | } |
a4fc5ed6 KP |
3210 | } |
3211 | ||
f0a3424e PZ |
3212 | /* Properly updates "DP" with the correct signal levels. */ |
3213 | static void | |
3214 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3215 | { | |
3216 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3217 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3218 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3219 | uint32_t signal_levels, mask; | |
3220 | uint8_t train_set = intel_dp->train_set[0]; | |
3221 | ||
9576c27f | 3222 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
f0a3424e PZ |
3223 | signal_levels = intel_hsw_signal_levels(train_set); |
3224 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
3225 | } else if (IS_CHERRYVIEW(dev)) { |
3226 | signal_levels = intel_chv_signal_levels(intel_dp); | |
3227 | mask = 0; | |
e2fa6fba P |
3228 | } else if (IS_VALLEYVIEW(dev)) { |
3229 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
3230 | mask = 0; | |
bc7d38a4 | 3231 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
3232 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
3233 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 3234 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
3235 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
3236 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
3237 | } else { | |
3238 | signal_levels = intel_gen4_signal_levels(train_set); | |
3239 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
3240 | } | |
3241 | ||
3242 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3243 | ||
3244 | *DP = (*DP & ~mask) | signal_levels; | |
3245 | } | |
3246 | ||
a4fc5ed6 | 3247 | static bool |
ea5b213a | 3248 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3249 | uint32_t *DP, |
58e10eb9 | 3250 | uint8_t dp_train_pat) |
a4fc5ed6 | 3251 | { |
174edf1f PZ |
3252 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3253 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3254 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 3255 | enum port port = intel_dig_port->port; |
2cdfe6c8 JN |
3256 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3257 | int ret, len; | |
a4fc5ed6 | 3258 | |
22b8bf17 | 3259 | if (HAS_DDI(dev)) { |
3ab9c637 | 3260 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
d6c0d722 PZ |
3261 | |
3262 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
3263 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
3264 | else | |
3265 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
3266 | ||
3267 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3268 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
3269 | case DP_TRAINING_PATTERN_DISABLE: | |
d6c0d722 PZ |
3270 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
3271 | ||
3272 | break; | |
3273 | case DP_TRAINING_PATTERN_1: | |
3274 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
3275 | break; | |
3276 | case DP_TRAINING_PATTERN_2: | |
3277 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
3278 | break; | |
3279 | case DP_TRAINING_PATTERN_3: | |
3280 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
3281 | break; | |
3282 | } | |
174edf1f | 3283 | I915_WRITE(DP_TP_CTL(port), temp); |
d6c0d722 | 3284 | |
bc7d38a4 | 3285 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
70aff66c | 3286 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
47ea7542 PZ |
3287 | |
3288 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
3289 | case DP_TRAINING_PATTERN_DISABLE: | |
70aff66c | 3290 | *DP |= DP_LINK_TRAIN_OFF_CPT; |
47ea7542 PZ |
3291 | break; |
3292 | case DP_TRAINING_PATTERN_1: | |
70aff66c | 3293 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; |
47ea7542 PZ |
3294 | break; |
3295 | case DP_TRAINING_PATTERN_2: | |
70aff66c | 3296 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
47ea7542 PZ |
3297 | break; |
3298 | case DP_TRAINING_PATTERN_3: | |
3299 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
70aff66c | 3300 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
47ea7542 PZ |
3301 | break; |
3302 | } | |
3303 | ||
3304 | } else { | |
aad3d14d VS |
3305 | if (IS_CHERRYVIEW(dev)) |
3306 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3307 | else | |
3308 | *DP &= ~DP_LINK_TRAIN_MASK; | |
47ea7542 PZ |
3309 | |
3310 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
3311 | case DP_TRAINING_PATTERN_DISABLE: | |
70aff66c | 3312 | *DP |= DP_LINK_TRAIN_OFF; |
47ea7542 PZ |
3313 | break; |
3314 | case DP_TRAINING_PATTERN_1: | |
70aff66c | 3315 | *DP |= DP_LINK_TRAIN_PAT_1; |
47ea7542 PZ |
3316 | break; |
3317 | case DP_TRAINING_PATTERN_2: | |
70aff66c | 3318 | *DP |= DP_LINK_TRAIN_PAT_2; |
47ea7542 PZ |
3319 | break; |
3320 | case DP_TRAINING_PATTERN_3: | |
aad3d14d VS |
3321 | if (IS_CHERRYVIEW(dev)) { |
3322 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
3323 | } else { | |
3324 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
3325 | *DP |= DP_LINK_TRAIN_PAT_2; | |
3326 | } | |
47ea7542 PZ |
3327 | break; |
3328 | } | |
3329 | } | |
3330 | ||
70aff66c | 3331 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3332 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3333 | |
2cdfe6c8 JN |
3334 | buf[0] = dp_train_pat; |
3335 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3336 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3337 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3338 | len = 1; | |
3339 | } else { | |
3340 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3341 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3342 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3343 | } |
a4fc5ed6 | 3344 | |
9d1a1031 JN |
3345 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3346 | buf, len); | |
2cdfe6c8 JN |
3347 | |
3348 | return ret == len; | |
a4fc5ed6 KP |
3349 | } |
3350 | ||
70aff66c JN |
3351 | static bool |
3352 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3353 | uint8_t dp_train_pat) | |
3354 | { | |
953d22e8 | 3355 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3356 | intel_dp_set_signal_levels(intel_dp, DP); |
3357 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3358 | } | |
3359 | ||
3360 | static bool | |
3361 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3362 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3363 | { |
3364 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3365 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3366 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3367 | int ret; | |
3368 | ||
3369 | intel_get_adjust_train(intel_dp, link_status); | |
3370 | intel_dp_set_signal_levels(intel_dp, DP); | |
3371 | ||
3372 | I915_WRITE(intel_dp->output_reg, *DP); | |
3373 | POSTING_READ(intel_dp->output_reg); | |
3374 | ||
9d1a1031 JN |
3375 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3376 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3377 | |
3378 | return ret == intel_dp->lane_count; | |
3379 | } | |
3380 | ||
3ab9c637 ID |
3381 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3382 | { | |
3383 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3384 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3385 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3386 | enum port port = intel_dig_port->port; | |
3387 | uint32_t val; | |
3388 | ||
3389 | if (!HAS_DDI(dev)) | |
3390 | return; | |
3391 | ||
3392 | val = I915_READ(DP_TP_CTL(port)); | |
3393 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3394 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3395 | I915_WRITE(DP_TP_CTL(port), val); | |
3396 | ||
3397 | /* | |
3398 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3399 | * we need to set idle transmission mode is to work around a HW issue | |
3400 | * where we enable the pipe while not in idle link-training mode. | |
3401 | * In this case there is requirement to wait for a minimum number of | |
3402 | * idle patterns to be sent. | |
3403 | */ | |
3404 | if (port == PORT_A) | |
3405 | return; | |
3406 | ||
3407 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3408 | 1)) | |
3409 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3410 | } | |
3411 | ||
33a34e4e | 3412 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3413 | void |
33a34e4e | 3414 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3415 | { |
da63a9f2 | 3416 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3417 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3418 | int i; |
3419 | uint8_t voltage; | |
cdb0e95b | 3420 | int voltage_tries, loop_tries; |
ea5b213a | 3421 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3422 | uint8_t link_config[2]; |
a4fc5ed6 | 3423 | |
affa9354 | 3424 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3425 | intel_ddi_prepare_link_retrain(encoder); |
3426 | ||
3cf2efb1 | 3427 | /* Write the link configuration data */ |
6aba5b6c JN |
3428 | link_config[0] = intel_dp->link_bw; |
3429 | link_config[1] = intel_dp->lane_count; | |
3430 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3431 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3432 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
6aba5b6c JN |
3433 | |
3434 | link_config[0] = 0; | |
3435 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3436 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3437 | |
3438 | DP |= DP_PORT_EN; | |
1a2eb460 | 3439 | |
70aff66c JN |
3440 | /* clock recovery */ |
3441 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3442 | DP_TRAINING_PATTERN_1 | | |
3443 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3444 | DRM_ERROR("failed to enable link training\n"); | |
3445 | return; | |
3446 | } | |
3447 | ||
a4fc5ed6 | 3448 | voltage = 0xff; |
cdb0e95b KP |
3449 | voltage_tries = 0; |
3450 | loop_tries = 0; | |
a4fc5ed6 | 3451 | for (;;) { |
70aff66c | 3452 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3453 | |
a7c9655f | 3454 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3455 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3456 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3457 | break; |
93f62dad | 3458 | } |
a4fc5ed6 | 3459 | |
01916270 | 3460 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3461 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3462 | break; |
3463 | } | |
3464 | ||
3465 | /* Check to see if we've tried the max voltage */ | |
3466 | for (i = 0; i < intel_dp->lane_count; i++) | |
3467 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3468 | break; |
3b4f819d | 3469 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3470 | ++loop_tries; |
3471 | if (loop_tries == 5) { | |
3def84b3 | 3472 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3473 | break; |
3474 | } | |
70aff66c JN |
3475 | intel_dp_reset_link_train(intel_dp, &DP, |
3476 | DP_TRAINING_PATTERN_1 | | |
3477 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3478 | voltage_tries = 0; |
3479 | continue; | |
3480 | } | |
a4fc5ed6 | 3481 | |
3cf2efb1 | 3482 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3483 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3484 | ++voltage_tries; |
b06fbda3 | 3485 | if (voltage_tries == 5) { |
3def84b3 | 3486 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3487 | break; |
3488 | } | |
3489 | } else | |
3490 | voltage_tries = 0; | |
3491 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3492 | |
70aff66c JN |
3493 | /* Update training set as requested by target */ |
3494 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3495 | DRM_ERROR("failed to update link training\n"); | |
3496 | break; | |
3497 | } | |
a4fc5ed6 KP |
3498 | } |
3499 | ||
33a34e4e JB |
3500 | intel_dp->DP = DP; |
3501 | } | |
3502 | ||
c19b0669 | 3503 | void |
33a34e4e JB |
3504 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3505 | { | |
33a34e4e | 3506 | bool channel_eq = false; |
37f80975 | 3507 | int tries, cr_tries; |
33a34e4e | 3508 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3509 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3510 | ||
3511 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3512 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3513 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3514 | |
a4fc5ed6 | 3515 | /* channel equalization */ |
70aff66c | 3516 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3517 | training_pattern | |
70aff66c JN |
3518 | DP_LINK_SCRAMBLING_DISABLE)) { |
3519 | DRM_ERROR("failed to start channel equalization\n"); | |
3520 | return; | |
3521 | } | |
3522 | ||
a4fc5ed6 | 3523 | tries = 0; |
37f80975 | 3524 | cr_tries = 0; |
a4fc5ed6 KP |
3525 | channel_eq = false; |
3526 | for (;;) { | |
70aff66c | 3527 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3528 | |
37f80975 JB |
3529 | if (cr_tries > 5) { |
3530 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3531 | break; |
3532 | } | |
3533 | ||
a7c9655f | 3534 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3535 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3536 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3537 | break; |
70aff66c | 3538 | } |
a4fc5ed6 | 3539 | |
37f80975 | 3540 | /* Make sure clock is still ok */ |
01916270 | 3541 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3542 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3543 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3544 | training_pattern | |
70aff66c | 3545 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3546 | cr_tries++; |
3547 | continue; | |
3548 | } | |
3549 | ||
1ffdff13 | 3550 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3551 | channel_eq = true; |
3552 | break; | |
3553 | } | |
a4fc5ed6 | 3554 | |
37f80975 JB |
3555 | /* Try 5 times, then try clock recovery if that fails */ |
3556 | if (tries > 5) { | |
3557 | intel_dp_link_down(intel_dp); | |
3558 | intel_dp_start_link_train(intel_dp); | |
70aff66c | 3559 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3560 | training_pattern | |
70aff66c | 3561 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3562 | tries = 0; |
3563 | cr_tries++; | |
3564 | continue; | |
3565 | } | |
a4fc5ed6 | 3566 | |
70aff66c JN |
3567 | /* Update training set as requested by target */ |
3568 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3569 | DRM_ERROR("failed to update link training\n"); | |
3570 | break; | |
3571 | } | |
3cf2efb1 | 3572 | ++tries; |
869184a6 | 3573 | } |
3cf2efb1 | 3574 | |
3ab9c637 ID |
3575 | intel_dp_set_idle_link_train(intel_dp); |
3576 | ||
3577 | intel_dp->DP = DP; | |
3578 | ||
d6c0d722 | 3579 | if (channel_eq) |
07f42258 | 3580 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3581 | |
3ab9c637 ID |
3582 | } |
3583 | ||
3584 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3585 | { | |
70aff66c | 3586 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3587 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3588 | } |
3589 | ||
3590 | static void | |
ea5b213a | 3591 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3592 | { |
da63a9f2 | 3593 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3594 | enum port port = intel_dig_port->port; |
da63a9f2 | 3595 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3596 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
3597 | struct intel_crtc *intel_crtc = |
3598 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 3599 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3600 | |
bc76e320 | 3601 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3602 | return; |
3603 | ||
0c33d8d7 | 3604 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3605 | return; |
3606 | ||
28c97730 | 3607 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3608 | |
bc7d38a4 | 3609 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3610 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3611 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3612 | } else { |
aad3d14d VS |
3613 | if (IS_CHERRYVIEW(dev)) |
3614 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3615 | else | |
3616 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3617 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3618 | } |
fe255d00 | 3619 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3620 | |
493a7081 | 3621 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3622 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 3623 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 3624 | |
5bddd17f EA |
3625 | /* Hardware workaround: leaving our transcoder select |
3626 | * set to transcoder B while it's off will prevent the | |
3627 | * corresponding HDMI output on transcoder A. | |
3628 | * | |
3629 | * Combine this with another hardware workaround: | |
3630 | * transcoder select bit can only be cleared while the | |
3631 | * port is enabled. | |
3632 | */ | |
3633 | DP &= ~DP_PIPEB_SELECT; | |
3634 | I915_WRITE(intel_dp->output_reg, DP); | |
3635 | ||
3636 | /* Changes to enable or select take place the vblank | |
3637 | * after being written. | |
3638 | */ | |
ff50afe9 DV |
3639 | if (WARN_ON(crtc == NULL)) { |
3640 | /* We should never try to disable a port without a crtc | |
3641 | * attached. For paranoia keep the code around for a | |
3642 | * bit. */ | |
31acbcc4 CW |
3643 | POSTING_READ(intel_dp->output_reg); |
3644 | msleep(50); | |
3645 | } else | |
ab527efc | 3646 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
3647 | } |
3648 | ||
832afda6 | 3649 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3650 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3651 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3652 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3653 | } |
3654 | ||
26d61aad KP |
3655 | static bool |
3656 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3657 | { |
a031d709 RV |
3658 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3659 | struct drm_device *dev = dig_port->base.base.dev; | |
3660 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3661 | ||
9d1a1031 JN |
3662 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3663 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3664 | return false; /* aux transfer failed */ |
92fd8fd1 | 3665 | |
a8e98153 | 3666 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3667 | |
edb39244 AJ |
3668 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3669 | return false; /* DPCD not present */ | |
3670 | ||
2293bb5c SK |
3671 | /* Check if the panel supports PSR */ |
3672 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3673 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3674 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3675 | intel_dp->psr_dpcd, | |
3676 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3677 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3678 | dev_priv->psr.sink_support = true; | |
50003939 | 3679 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3680 | } |
50003939 JN |
3681 | } |
3682 | ||
06ea66b6 TP |
3683 | /* Training Pattern 3 support */ |
3684 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && | |
3685 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED) { | |
3686 | intel_dp->use_tps3 = true; | |
3687 | DRM_DEBUG_KMS("Displayport TPS3 supported"); | |
3688 | } else | |
3689 | intel_dp->use_tps3 = false; | |
3690 | ||
edb39244 AJ |
3691 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3692 | DP_DWN_STRM_PORT_PRESENT)) | |
3693 | return true; /* native DP sink */ | |
3694 | ||
3695 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3696 | return true; /* no per-port downstream info */ | |
3697 | ||
9d1a1031 JN |
3698 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3699 | intel_dp->downstream_ports, | |
3700 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3701 | return false; /* downstream port status fetch failed */ |
3702 | ||
3703 | return true; | |
92fd8fd1 KP |
3704 | } |
3705 | ||
0d198328 AJ |
3706 | static void |
3707 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3708 | { | |
3709 | u8 buf[3]; | |
3710 | ||
3711 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3712 | return; | |
3713 | ||
24f3e092 | 3714 | intel_edp_panel_vdd_on(intel_dp); |
351cfc34 | 3715 | |
9d1a1031 | 3716 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3717 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3718 | buf[0], buf[1], buf[2]); | |
3719 | ||
9d1a1031 | 3720 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3721 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3722 | buf[0], buf[1], buf[2]); | |
351cfc34 | 3723 | |
1e0560e0 | 3724 | intel_edp_panel_vdd_off(intel_dp, false); |
0d198328 AJ |
3725 | } |
3726 | ||
0e32b39c DA |
3727 | static bool |
3728 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3729 | { | |
3730 | u8 buf[1]; | |
3731 | ||
3732 | if (!intel_dp->can_mst) | |
3733 | return false; | |
3734 | ||
3735 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3736 | return false; | |
3737 | ||
d337a341 | 3738 | intel_edp_panel_vdd_on(intel_dp); |
0e32b39c DA |
3739 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3740 | if (buf[0] & DP_MST_CAP) { | |
3741 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3742 | intel_dp->is_mst = true; | |
3743 | } else { | |
3744 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3745 | intel_dp->is_mst = false; | |
3746 | } | |
3747 | } | |
1e0560e0 | 3748 | intel_edp_panel_vdd_off(intel_dp, false); |
0e32b39c DA |
3749 | |
3750 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3751 | return intel_dp->is_mst; | |
3752 | } | |
3753 | ||
d2e216d0 RV |
3754 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3755 | { | |
3756 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3757 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3758 | struct intel_crtc *intel_crtc = | |
3759 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
3760 | u8 buf[1]; | |
3761 | ||
9d1a1031 | 3762 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0) |
d2e216d0 RV |
3763 | return -EAGAIN; |
3764 | ||
3765 | if (!(buf[0] & DP_TEST_CRC_SUPPORTED)) | |
3766 | return -ENOTTY; | |
3767 | ||
9d1a1031 JN |
3768 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
3769 | DP_TEST_SINK_START) < 0) | |
d2e216d0 RV |
3770 | return -EAGAIN; |
3771 | ||
3772 | /* Wait 2 vblanks to be sure we will have the correct CRC value */ | |
3773 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3774 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3775 | ||
9d1a1031 | 3776 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
d2e216d0 RV |
3777 | return -EAGAIN; |
3778 | ||
9d1a1031 | 3779 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0); |
d2e216d0 RV |
3780 | return 0; |
3781 | } | |
3782 | ||
a60f0e38 JB |
3783 | static bool |
3784 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3785 | { | |
9d1a1031 JN |
3786 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3787 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3788 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3789 | } |
3790 | ||
0e32b39c DA |
3791 | static bool |
3792 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3793 | { | |
3794 | int ret; | |
3795 | ||
3796 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3797 | DP_SINK_COUNT_ESI, | |
3798 | sink_irq_vector, 14); | |
3799 | if (ret != 14) | |
3800 | return false; | |
3801 | ||
3802 | return true; | |
3803 | } | |
3804 | ||
a60f0e38 JB |
3805 | static void |
3806 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3807 | { | |
3808 | /* NAK by default */ | |
9d1a1031 | 3809 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3810 | } |
3811 | ||
0e32b39c DA |
3812 | static int |
3813 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3814 | { | |
3815 | bool bret; | |
3816 | ||
3817 | if (intel_dp->is_mst) { | |
3818 | u8 esi[16] = { 0 }; | |
3819 | int ret = 0; | |
3820 | int retry; | |
3821 | bool handled; | |
3822 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3823 | go_again: | |
3824 | if (bret == true) { | |
3825 | ||
3826 | /* check link status - esi[10] = 0x200c */ | |
3827 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3828 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3829 | intel_dp_start_link_train(intel_dp); | |
3830 | intel_dp_complete_link_train(intel_dp); | |
3831 | intel_dp_stop_link_train(intel_dp); | |
3832 | } | |
3833 | ||
3834 | DRM_DEBUG_KMS("got esi %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3835 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); | |
3836 | ||
3837 | if (handled) { | |
3838 | for (retry = 0; retry < 3; retry++) { | |
3839 | int wret; | |
3840 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3841 | DP_SINK_COUNT_ESI+1, | |
3842 | &esi[1], 3); | |
3843 | if (wret == 3) { | |
3844 | break; | |
3845 | } | |
3846 | } | |
3847 | ||
3848 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3849 | if (bret == true) { | |
3850 | DRM_DEBUG_KMS("got esi2 %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3851 | goto go_again; | |
3852 | } | |
3853 | } else | |
3854 | ret = 0; | |
3855 | ||
3856 | return ret; | |
3857 | } else { | |
3858 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3859 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3860 | intel_dp->is_mst = false; | |
3861 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3862 | /* send a hotplug event */ | |
3863 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3864 | } | |
3865 | } | |
3866 | return -EINVAL; | |
3867 | } | |
3868 | ||
a4fc5ed6 KP |
3869 | /* |
3870 | * According to DP spec | |
3871 | * 5.1.2: | |
3872 | * 1. Read DPCD | |
3873 | * 2. Configure link according to Receiver Capabilities | |
3874 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3875 | * 4. Check link status on receipt of hot-plug interrupt | |
3876 | */ | |
00c09d70 | 3877 | void |
ea5b213a | 3878 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3879 | { |
5b215bcf | 3880 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 3881 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3882 | u8 sink_irq_vector; |
93f62dad | 3883 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3884 | |
5b215bcf DA |
3885 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
3886 | ||
da63a9f2 | 3887 | if (!intel_encoder->connectors_active) |
d2b996ac | 3888 | return; |
59cd09e1 | 3889 | |
da63a9f2 | 3890 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3891 | return; |
3892 | ||
1a125d8a ID |
3893 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
3894 | return; | |
3895 | ||
92fd8fd1 | 3896 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3897 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3898 | return; |
3899 | } | |
3900 | ||
92fd8fd1 | 3901 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3902 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3903 | return; |
3904 | } | |
3905 | ||
a60f0e38 JB |
3906 | /* Try to read the source of the interrupt */ |
3907 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
3908 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
3909 | /* Clear interrupt source */ | |
9d1a1031 JN |
3910 | drm_dp_dpcd_writeb(&intel_dp->aux, |
3911 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3912 | sink_irq_vector); | |
a60f0e38 JB |
3913 | |
3914 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
3915 | intel_dp_handle_test_request(intel_dp); | |
3916 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
3917 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
3918 | } | |
3919 | ||
1ffdff13 | 3920 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 3921 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 3922 | intel_encoder->base.name); |
33a34e4e JB |
3923 | intel_dp_start_link_train(intel_dp); |
3924 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 3925 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 3926 | } |
a4fc5ed6 | 3927 | } |
a4fc5ed6 | 3928 | |
caf9ab24 | 3929 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 3930 | static enum drm_connector_status |
26d61aad | 3931 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 3932 | { |
caf9ab24 | 3933 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
3934 | uint8_t type; |
3935 | ||
3936 | if (!intel_dp_get_dpcd(intel_dp)) | |
3937 | return connector_status_disconnected; | |
3938 | ||
3939 | /* if there's no downstream port, we're done */ | |
3940 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 3941 | return connector_status_connected; |
caf9ab24 AJ |
3942 | |
3943 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
3944 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
3945 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 3946 | uint8_t reg; |
9d1a1031 JN |
3947 | |
3948 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
3949 | ®, 1) < 0) | |
caf9ab24 | 3950 | return connector_status_unknown; |
9d1a1031 | 3951 | |
23235177 AJ |
3952 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
3953 | : connector_status_disconnected; | |
caf9ab24 AJ |
3954 | } |
3955 | ||
3956 | /* If no HPD, poke DDC gently */ | |
0b99836f | 3957 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 3958 | return connector_status_connected; |
caf9ab24 AJ |
3959 | |
3960 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
3961 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
3962 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
3963 | if (type == DP_DS_PORT_TYPE_VGA || | |
3964 | type == DP_DS_PORT_TYPE_NON_EDID) | |
3965 | return connector_status_unknown; | |
3966 | } else { | |
3967 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
3968 | DP_DWN_STRM_PORT_TYPE_MASK; | |
3969 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
3970 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
3971 | return connector_status_unknown; | |
3972 | } | |
caf9ab24 AJ |
3973 | |
3974 | /* Anything else is out of spec, warn and ignore */ | |
3975 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 3976 | return connector_status_disconnected; |
71ba9000 AJ |
3977 | } |
3978 | ||
d410b56d CW |
3979 | static enum drm_connector_status |
3980 | edp_detect(struct intel_dp *intel_dp) | |
3981 | { | |
3982 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3983 | enum drm_connector_status status; | |
3984 | ||
3985 | status = intel_panel_detect(dev); | |
3986 | if (status == connector_status_unknown) | |
3987 | status = connector_status_connected; | |
3988 | ||
3989 | return status; | |
3990 | } | |
3991 | ||
5eb08b69 | 3992 | static enum drm_connector_status |
a9756bb5 | 3993 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 3994 | { |
30add22d | 3995 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
3996 | struct drm_i915_private *dev_priv = dev->dev_private; |
3997 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 3998 | |
1b469639 DL |
3999 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4000 | return connector_status_disconnected; | |
4001 | ||
26d61aad | 4002 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4003 | } |
4004 | ||
a4fc5ed6 | 4005 | static enum drm_connector_status |
a9756bb5 | 4006 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 4007 | { |
30add22d | 4008 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
a4fc5ed6 | 4009 | struct drm_i915_private *dev_priv = dev->dev_private; |
34f2be46 | 4010 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
10f76a38 | 4011 | uint32_t bit; |
5eb08b69 | 4012 | |
232a6ee9 TP |
4013 | if (IS_VALLEYVIEW(dev)) { |
4014 | switch (intel_dig_port->port) { | |
4015 | case PORT_B: | |
4016 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4017 | break; | |
4018 | case PORT_C: | |
4019 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4020 | break; | |
4021 | case PORT_D: | |
4022 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4023 | break; | |
4024 | default: | |
4025 | return connector_status_unknown; | |
4026 | } | |
4027 | } else { | |
4028 | switch (intel_dig_port->port) { | |
4029 | case PORT_B: | |
4030 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4031 | break; | |
4032 | case PORT_C: | |
4033 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4034 | break; | |
4035 | case PORT_D: | |
4036 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4037 | break; | |
4038 | default: | |
4039 | return connector_status_unknown; | |
4040 | } | |
a4fc5ed6 KP |
4041 | } |
4042 | ||
10f76a38 | 4043 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
4044 | return connector_status_disconnected; |
4045 | ||
26d61aad | 4046 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4047 | } |
4048 | ||
8c241fef | 4049 | static struct edid * |
beb60608 | 4050 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4051 | { |
beb60608 | 4052 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4053 | |
9cd300e0 JN |
4054 | /* use cached edid if we have one */ |
4055 | if (intel_connector->edid) { | |
9cd300e0 JN |
4056 | /* invalid edid */ |
4057 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4058 | return NULL; |
4059 | ||
55e9edeb | 4060 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4061 | } else |
4062 | return drm_get_edid(&intel_connector->base, | |
4063 | &intel_dp->aux.ddc); | |
4064 | } | |
8c241fef | 4065 | |
beb60608 CW |
4066 | static void |
4067 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4068 | { | |
4069 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4070 | struct edid *edid; | |
4071 | ||
4072 | edid = intel_dp_get_edid(intel_dp); | |
4073 | intel_connector->detect_edid = edid; | |
4074 | ||
4075 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4076 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4077 | else | |
4078 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4079 | } |
4080 | ||
beb60608 CW |
4081 | static void |
4082 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4083 | { |
beb60608 | 4084 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4085 | |
beb60608 CW |
4086 | kfree(intel_connector->detect_edid); |
4087 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4088 | |
beb60608 CW |
4089 | intel_dp->has_audio = false; |
4090 | } | |
d6f24d0f | 4091 | |
beb60608 CW |
4092 | static enum intel_display_power_domain |
4093 | intel_dp_power_get(struct intel_dp *dp) | |
4094 | { | |
4095 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4096 | enum intel_display_power_domain power_domain; | |
4097 | ||
4098 | power_domain = intel_display_port_power_domain(encoder); | |
4099 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4100 | ||
4101 | return power_domain; | |
4102 | } | |
4103 | ||
4104 | static void | |
4105 | intel_dp_power_put(struct intel_dp *dp, | |
4106 | enum intel_display_power_domain power_domain) | |
4107 | { | |
4108 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4109 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4110 | } |
4111 | ||
a9756bb5 ZW |
4112 | static enum drm_connector_status |
4113 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4114 | { | |
4115 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4116 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4117 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4118 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4119 | enum drm_connector_status status; |
671dedd2 | 4120 | enum intel_display_power_domain power_domain; |
0e32b39c | 4121 | bool ret; |
a9756bb5 | 4122 | |
164c8598 | 4123 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4124 | connector->base.id, connector->name); |
beb60608 | 4125 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4126 | |
0e32b39c DA |
4127 | if (intel_dp->is_mst) { |
4128 | /* MST devices are disconnected from a monitor POV */ | |
4129 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4130 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4131 | return connector_status_disconnected; |
0e32b39c DA |
4132 | } |
4133 | ||
beb60608 | 4134 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4135 | |
d410b56d CW |
4136 | /* Can't disconnect eDP, but you can close the lid... */ |
4137 | if (is_edp(intel_dp)) | |
4138 | status = edp_detect(intel_dp); | |
4139 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4140 | status = ironlake_dp_detect(intel_dp); |
4141 | else | |
4142 | status = g4x_dp_detect(intel_dp); | |
4143 | if (status != connector_status_connected) | |
c8c8fb33 | 4144 | goto out; |
a9756bb5 | 4145 | |
0d198328 AJ |
4146 | intel_dp_probe_oui(intel_dp); |
4147 | ||
0e32b39c DA |
4148 | ret = intel_dp_probe_mst(intel_dp); |
4149 | if (ret) { | |
4150 | /* if we are in MST mode then this connector | |
4151 | won't appear connected or have anything with EDID on it */ | |
4152 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4153 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4154 | status = connector_status_disconnected; | |
4155 | goto out; | |
4156 | } | |
4157 | ||
beb60608 | 4158 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4159 | |
d63885da PZ |
4160 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4161 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4162 | status = connector_status_connected; |
4163 | ||
4164 | out: | |
beb60608 | 4165 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4166 | return status; |
a4fc5ed6 KP |
4167 | } |
4168 | ||
beb60608 CW |
4169 | static void |
4170 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4171 | { |
df0e9248 | 4172 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4173 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4174 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4175 | |
beb60608 CW |
4176 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4177 | connector->base.id, connector->name); | |
4178 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4179 | |
beb60608 CW |
4180 | if (connector->status != connector_status_connected) |
4181 | return; | |
671dedd2 | 4182 | |
beb60608 CW |
4183 | power_domain = intel_dp_power_get(intel_dp); |
4184 | ||
4185 | intel_dp_set_edid(intel_dp); | |
4186 | ||
4187 | intel_dp_power_put(intel_dp, power_domain); | |
4188 | ||
4189 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4190 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4191 | } | |
4192 | ||
4193 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4194 | { | |
4195 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4196 | struct edid *edid; | |
4197 | ||
4198 | edid = intel_connector->detect_edid; | |
4199 | if (edid) { | |
4200 | int ret = intel_connector_update_modes(connector, edid); | |
4201 | if (ret) | |
4202 | return ret; | |
4203 | } | |
32f9d658 | 4204 | |
f8779fda | 4205 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4206 | if (is_edp(intel_attached_dp(connector)) && |
4207 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4208 | struct drm_display_mode *mode; |
beb60608 CW |
4209 | |
4210 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4211 | intel_connector->panel.fixed_mode); |
f8779fda | 4212 | if (mode) { |
32f9d658 ZW |
4213 | drm_mode_probed_add(connector, mode); |
4214 | return 1; | |
4215 | } | |
4216 | } | |
beb60608 | 4217 | |
32f9d658 | 4218 | return 0; |
a4fc5ed6 KP |
4219 | } |
4220 | ||
1aad7ac0 CW |
4221 | static bool |
4222 | intel_dp_detect_audio(struct drm_connector *connector) | |
4223 | { | |
1aad7ac0 | 4224 | bool has_audio = false; |
beb60608 | 4225 | struct edid *edid; |
1aad7ac0 | 4226 | |
beb60608 CW |
4227 | edid = to_intel_connector(connector)->detect_edid; |
4228 | if (edid) | |
1aad7ac0 | 4229 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4230 | |
1aad7ac0 CW |
4231 | return has_audio; |
4232 | } | |
4233 | ||
f684960e CW |
4234 | static int |
4235 | intel_dp_set_property(struct drm_connector *connector, | |
4236 | struct drm_property *property, | |
4237 | uint64_t val) | |
4238 | { | |
e953fd7b | 4239 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4240 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4241 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4242 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4243 | int ret; |
4244 | ||
662595df | 4245 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4246 | if (ret) |
4247 | return ret; | |
4248 | ||
3f43c48d | 4249 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4250 | int i = val; |
4251 | bool has_audio; | |
4252 | ||
4253 | if (i == intel_dp->force_audio) | |
f684960e CW |
4254 | return 0; |
4255 | ||
1aad7ac0 | 4256 | intel_dp->force_audio = i; |
f684960e | 4257 | |
c3e5f67b | 4258 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4259 | has_audio = intel_dp_detect_audio(connector); |
4260 | else | |
c3e5f67b | 4261 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4262 | |
4263 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4264 | return 0; |
4265 | ||
1aad7ac0 | 4266 | intel_dp->has_audio = has_audio; |
f684960e CW |
4267 | goto done; |
4268 | } | |
4269 | ||
e953fd7b | 4270 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4271 | bool old_auto = intel_dp->color_range_auto; |
4272 | uint32_t old_range = intel_dp->color_range; | |
4273 | ||
55bc60db VS |
4274 | switch (val) { |
4275 | case INTEL_BROADCAST_RGB_AUTO: | |
4276 | intel_dp->color_range_auto = true; | |
4277 | break; | |
4278 | case INTEL_BROADCAST_RGB_FULL: | |
4279 | intel_dp->color_range_auto = false; | |
4280 | intel_dp->color_range = 0; | |
4281 | break; | |
4282 | case INTEL_BROADCAST_RGB_LIMITED: | |
4283 | intel_dp->color_range_auto = false; | |
4284 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4285 | break; | |
4286 | default: | |
4287 | return -EINVAL; | |
4288 | } | |
ae4edb80 DV |
4289 | |
4290 | if (old_auto == intel_dp->color_range_auto && | |
4291 | old_range == intel_dp->color_range) | |
4292 | return 0; | |
4293 | ||
e953fd7b CW |
4294 | goto done; |
4295 | } | |
4296 | ||
53b41837 YN |
4297 | if (is_edp(intel_dp) && |
4298 | property == connector->dev->mode_config.scaling_mode_property) { | |
4299 | if (val == DRM_MODE_SCALE_NONE) { | |
4300 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4301 | return -EINVAL; | |
4302 | } | |
4303 | ||
4304 | if (intel_connector->panel.fitting_mode == val) { | |
4305 | /* the eDP scaling property is not changed */ | |
4306 | return 0; | |
4307 | } | |
4308 | intel_connector->panel.fitting_mode = val; | |
4309 | ||
4310 | goto done; | |
4311 | } | |
4312 | ||
f684960e CW |
4313 | return -EINVAL; |
4314 | ||
4315 | done: | |
c0c36b94 CW |
4316 | if (intel_encoder->base.crtc) |
4317 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4318 | |
4319 | return 0; | |
4320 | } | |
4321 | ||
a4fc5ed6 | 4322 | static void |
73845adf | 4323 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4324 | { |
1d508706 | 4325 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4326 | |
beb60608 CW |
4327 | intel_dp_unset_edid(intel_attached_dp(connector)); |
4328 | ||
9cd300e0 JN |
4329 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4330 | kfree(intel_connector->edid); | |
4331 | ||
acd8db10 PZ |
4332 | /* Can't call is_edp() since the encoder may have been destroyed |
4333 | * already. */ | |
4334 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4335 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4336 | |
a4fc5ed6 | 4337 | drm_connector_cleanup(connector); |
55f78c43 | 4338 | kfree(connector); |
a4fc5ed6 KP |
4339 | } |
4340 | ||
00c09d70 | 4341 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4342 | { |
da63a9f2 PZ |
4343 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4344 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4345 | |
4f71d0cb | 4346 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4347 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
24d05927 | 4348 | drm_encoder_cleanup(encoder); |
bd943159 KP |
4349 | if (is_edp(intel_dp)) { |
4350 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
773538e8 | 4351 | pps_lock(intel_dp); |
4be73780 | 4352 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4353 | pps_unlock(intel_dp); |
4354 | ||
01527b31 CT |
4355 | if (intel_dp->edp_notifier.notifier_call) { |
4356 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4357 | intel_dp->edp_notifier.notifier_call = NULL; | |
4358 | } | |
bd943159 | 4359 | } |
da63a9f2 | 4360 | kfree(intel_dig_port); |
24d05927 DV |
4361 | } |
4362 | ||
07f9cd0b ID |
4363 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4364 | { | |
4365 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4366 | ||
4367 | if (!is_edp(intel_dp)) | |
4368 | return; | |
4369 | ||
773538e8 | 4370 | pps_lock(intel_dp); |
07f9cd0b | 4371 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4372 | pps_unlock(intel_dp); |
07f9cd0b ID |
4373 | } |
4374 | ||
6d93c0c4 ID |
4375 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4376 | { | |
4377 | intel_edp_panel_vdd_sanitize(to_intel_encoder(encoder)); | |
4378 | } | |
4379 | ||
a4fc5ed6 | 4380 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4381 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4382 | .detect = intel_dp_detect, |
beb60608 | 4383 | .force = intel_dp_force, |
a4fc5ed6 | 4384 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4385 | .set_property = intel_dp_set_property, |
73845adf | 4386 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
4387 | }; |
4388 | ||
4389 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4390 | .get_modes = intel_dp_get_modes, | |
4391 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4392 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4393 | }; |
4394 | ||
a4fc5ed6 | 4395 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4396 | .reset = intel_dp_encoder_reset, |
24d05927 | 4397 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4398 | }; |
4399 | ||
0e32b39c | 4400 | void |
21d40d37 | 4401 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4402 | { |
0e32b39c | 4403 | return; |
c8110e52 | 4404 | } |
6207937d | 4405 | |
13cf5504 DA |
4406 | bool |
4407 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) | |
4408 | { | |
4409 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4410 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4411 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4412 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 ID |
4413 | enum intel_display_power_domain power_domain; |
4414 | bool ret = true; | |
4415 | ||
0e32b39c DA |
4416 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4417 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4418 | |
26fbb774 VS |
4419 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4420 | port_name(intel_dig_port->port), | |
0e32b39c | 4421 | long_hpd ? "long" : "short"); |
13cf5504 | 4422 | |
1c767b33 ID |
4423 | power_domain = intel_display_port_power_domain(intel_encoder); |
4424 | intel_display_power_get(dev_priv, power_domain); | |
4425 | ||
0e32b39c DA |
4426 | if (long_hpd) { |
4427 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4428 | goto mst_fail; | |
4429 | ||
4430 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4431 | goto mst_fail; | |
4432 | } | |
4433 | ||
4434 | intel_dp_probe_oui(intel_dp); | |
4435 | ||
4436 | if (!intel_dp_probe_mst(intel_dp)) | |
4437 | goto mst_fail; | |
4438 | ||
4439 | } else { | |
4440 | if (intel_dp->is_mst) { | |
1c767b33 | 4441 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4442 | goto mst_fail; |
4443 | } | |
4444 | ||
4445 | if (!intel_dp->is_mst) { | |
4446 | /* | |
4447 | * we'll check the link status via the normal hot plug path later - | |
4448 | * but for short hpds we should check it now | |
4449 | */ | |
5b215bcf | 4450 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4451 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4452 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4453 | } |
4454 | } | |
1c767b33 ID |
4455 | ret = false; |
4456 | goto put_power; | |
0e32b39c DA |
4457 | mst_fail: |
4458 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4459 | if (intel_dp->is_mst) { | |
4460 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4461 | intel_dp->is_mst = false; | |
4462 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4463 | } | |
1c767b33 ID |
4464 | put_power: |
4465 | intel_display_power_put(dev_priv, power_domain); | |
4466 | ||
4467 | return ret; | |
13cf5504 DA |
4468 | } |
4469 | ||
e3421a18 ZW |
4470 | /* Return which DP Port should be selected for Transcoder DP control */ |
4471 | int | |
0206e353 | 4472 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4473 | { |
4474 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4475 | struct intel_encoder *intel_encoder; |
4476 | struct intel_dp *intel_dp; | |
e3421a18 | 4477 | |
fa90ecef PZ |
4478 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4479 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4480 | |
fa90ecef PZ |
4481 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4482 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4483 | return intel_dp->output_reg; |
e3421a18 | 4484 | } |
ea5b213a | 4485 | |
e3421a18 ZW |
4486 | return -1; |
4487 | } | |
4488 | ||
36e83a18 | 4489 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4490 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4491 | { |
4492 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4493 | union child_device_config *p_child; |
36e83a18 | 4494 | int i; |
5d8a7752 VS |
4495 | static const short port_mapping[] = { |
4496 | [PORT_B] = PORT_IDPB, | |
4497 | [PORT_C] = PORT_IDPC, | |
4498 | [PORT_D] = PORT_IDPD, | |
4499 | }; | |
36e83a18 | 4500 | |
3b32a35b VS |
4501 | if (port == PORT_A) |
4502 | return true; | |
4503 | ||
41aa3448 | 4504 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4505 | return false; |
4506 | ||
41aa3448 RV |
4507 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4508 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4509 | |
5d8a7752 | 4510 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4511 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4512 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4513 | return true; |
4514 | } | |
4515 | return false; | |
4516 | } | |
4517 | ||
0e32b39c | 4518 | void |
f684960e CW |
4519 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4520 | { | |
53b41837 YN |
4521 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4522 | ||
3f43c48d | 4523 | intel_attach_force_audio_property(connector); |
e953fd7b | 4524 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4525 | intel_dp->color_range_auto = true; |
53b41837 YN |
4526 | |
4527 | if (is_edp(intel_dp)) { | |
4528 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4529 | drm_object_attach_property( |
4530 | &connector->base, | |
53b41837 | 4531 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4532 | DRM_MODE_SCALE_ASPECT); |
4533 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4534 | } |
f684960e CW |
4535 | } |
4536 | ||
dada1a9f ID |
4537 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4538 | { | |
4539 | intel_dp->last_power_cycle = jiffies; | |
4540 | intel_dp->last_power_on = jiffies; | |
4541 | intel_dp->last_backlight_off = jiffies; | |
4542 | } | |
4543 | ||
67a54566 DV |
4544 | static void |
4545 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
4546 | struct intel_dp *intel_dp, |
4547 | struct edp_power_seq *out) | |
67a54566 DV |
4548 | { |
4549 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4550 | struct edp_power_seq cur, vbt, spec, final; | |
4551 | u32 pp_on, pp_off, pp_div, pp; | |
bf13e81b | 4552 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4553 | |
e39b999a VS |
4554 | lockdep_assert_held(&dev_priv->pps_mutex); |
4555 | ||
453c5420 | 4556 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4557 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4558 | pp_on_reg = PCH_PP_ON_DELAYS; |
4559 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4560 | pp_div_reg = PCH_PP_DIVISOR; | |
4561 | } else { | |
bf13e81b JN |
4562 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4563 | ||
4564 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4565 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4566 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4567 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4568 | } |
67a54566 DV |
4569 | |
4570 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4571 | * the very first thing. */ | |
453c5420 | 4572 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4573 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4574 | |
453c5420 JB |
4575 | pp_on = I915_READ(pp_on_reg); |
4576 | pp_off = I915_READ(pp_off_reg); | |
4577 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4578 | |
4579 | /* Pull timing values out of registers */ | |
4580 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4581 | PANEL_POWER_UP_DELAY_SHIFT; | |
4582 | ||
4583 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4584 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4585 | ||
4586 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4587 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4588 | ||
4589 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4590 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4591 | ||
4592 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4593 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4594 | ||
4595 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4596 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4597 | ||
41aa3448 | 4598 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4599 | |
4600 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4601 | * our hw here, which are all in 100usec. */ | |
4602 | spec.t1_t3 = 210 * 10; | |
4603 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4604 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4605 | spec.t10 = 500 * 10; | |
4606 | /* This one is special and actually in units of 100ms, but zero | |
4607 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4608 | * table multiplies it with 1000 to make it in units of 100usec, | |
4609 | * too. */ | |
4610 | spec.t11_t12 = (510 + 100) * 10; | |
4611 | ||
4612 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4613 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4614 | ||
4615 | /* Use the max of the register settings and vbt. If both are | |
4616 | * unset, fall back to the spec limits. */ | |
4617 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
4618 | spec.field : \ | |
4619 | max(cur.field, vbt.field)) | |
4620 | assign_final(t1_t3); | |
4621 | assign_final(t8); | |
4622 | assign_final(t9); | |
4623 | assign_final(t10); | |
4624 | assign_final(t11_t12); | |
4625 | #undef assign_final | |
4626 | ||
4627 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
4628 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
4629 | intel_dp->backlight_on_delay = get_delay(t8); | |
4630 | intel_dp->backlight_off_delay = get_delay(t9); | |
4631 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4632 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4633 | #undef get_delay | |
4634 | ||
f30d26e4 JN |
4635 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4636 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4637 | intel_dp->panel_power_cycle_delay); | |
4638 | ||
4639 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4640 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
4641 | ||
4642 | if (out) | |
4643 | *out = final; | |
4644 | } | |
4645 | ||
4646 | static void | |
4647 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
4648 | struct intel_dp *intel_dp, | |
4649 | struct edp_power_seq *seq) | |
4650 | { | |
4651 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4652 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4653 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4654 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 4655 | enum port port = dp_to_dig_port(intel_dp)->port; |
453c5420 | 4656 | |
e39b999a VS |
4657 | lockdep_assert_held(&dev_priv->pps_mutex); |
4658 | ||
453c5420 JB |
4659 | if (HAS_PCH_SPLIT(dev)) { |
4660 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4661 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4662 | pp_div_reg = PCH_PP_DIVISOR; | |
4663 | } else { | |
bf13e81b JN |
4664 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4665 | ||
4666 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4667 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4668 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4669 | } |
4670 | ||
b2f19d1a PZ |
4671 | /* |
4672 | * And finally store the new values in the power sequencer. The | |
4673 | * backlight delays are set to 1 because we do manual waits on them. For | |
4674 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4675 | * we'll end up waiting for the backlight off delay twice: once when we | |
4676 | * do the manual sleep, and once when we disable the panel and wait for | |
4677 | * the PP_STATUS bit to become zero. | |
4678 | */ | |
f30d26e4 | 4679 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4680 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4681 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4682 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4683 | /* Compute the divisor for the pp clock, simply match the Bspec |
4684 | * formula. */ | |
453c5420 | 4685 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4686 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4687 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4688 | ||
4689 | /* Haswell doesn't have any port selection bits for the panel | |
4690 | * power sequencer any more. */ | |
bc7d38a4 | 4691 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 4692 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 4693 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 4694 | if (port == PORT_A) |
a24c144c | 4695 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4696 | else |
a24c144c | 4697 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4698 | } |
4699 | ||
453c5420 JB |
4700 | pp_on |= port_sel; |
4701 | ||
4702 | I915_WRITE(pp_on_reg, pp_on); | |
4703 | I915_WRITE(pp_off_reg, pp_off); | |
4704 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4705 | |
67a54566 | 4706 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4707 | I915_READ(pp_on_reg), |
4708 | I915_READ(pp_off_reg), | |
4709 | I915_READ(pp_div_reg)); | |
f684960e CW |
4710 | } |
4711 | ||
439d7ac0 PB |
4712 | void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
4713 | { | |
4714 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4715 | struct intel_encoder *encoder; | |
4716 | struct intel_dp *intel_dp = NULL; | |
4717 | struct intel_crtc_config *config = NULL; | |
4718 | struct intel_crtc *intel_crtc = NULL; | |
4719 | struct intel_connector *intel_connector = dev_priv->drrs.connector; | |
4720 | u32 reg, val; | |
4721 | enum edp_drrs_refresh_rate_type index = DRRS_HIGH_RR; | |
4722 | ||
4723 | if (refresh_rate <= 0) { | |
4724 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4725 | return; | |
4726 | } | |
4727 | ||
4728 | if (intel_connector == NULL) { | |
4729 | DRM_DEBUG_KMS("DRRS supported for eDP only.\n"); | |
4730 | return; | |
4731 | } | |
4732 | ||
1fcc9d1c DV |
4733 | /* |
4734 | * FIXME: This needs proper synchronization with psr state. But really | |
4735 | * hard to tell without seeing the user of this function of this code. | |
4736 | * Check locking and ordering once that lands. | |
4737 | */ | |
439d7ac0 PB |
4738 | if (INTEL_INFO(dev)->gen < 8 && intel_edp_is_psr_enabled(dev)) { |
4739 | DRM_DEBUG_KMS("DRRS is disabled as PSR is enabled\n"); | |
4740 | return; | |
4741 | } | |
4742 | ||
4743 | encoder = intel_attached_encoder(&intel_connector->base); | |
4744 | intel_dp = enc_to_intel_dp(&encoder->base); | |
4745 | intel_crtc = encoder->new_crtc; | |
4746 | ||
4747 | if (!intel_crtc) { | |
4748 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4749 | return; | |
4750 | } | |
4751 | ||
4752 | config = &intel_crtc->config; | |
4753 | ||
4754 | if (intel_dp->drrs_state.type < SEAMLESS_DRRS_SUPPORT) { | |
4755 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); | |
4756 | return; | |
4757 | } | |
4758 | ||
4759 | if (intel_connector->panel.downclock_mode->vrefresh == refresh_rate) | |
4760 | index = DRRS_LOW_RR; | |
4761 | ||
4762 | if (index == intel_dp->drrs_state.refresh_rate_type) { | |
4763 | DRM_DEBUG_KMS( | |
4764 | "DRRS requested for previously set RR...ignoring\n"); | |
4765 | return; | |
4766 | } | |
4767 | ||
4768 | if (!intel_crtc->active) { | |
4769 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4770 | return; | |
4771 | } | |
4772 | ||
4773 | if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) { | |
4774 | reg = PIPECONF(intel_crtc->config.cpu_transcoder); | |
4775 | val = I915_READ(reg); | |
4776 | if (index > DRRS_HIGH_RR) { | |
4777 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
f769cd24 | 4778 | intel_dp_set_m_n(intel_crtc); |
439d7ac0 PB |
4779 | } else { |
4780 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
4781 | } | |
4782 | I915_WRITE(reg, val); | |
4783 | } | |
4784 | ||
4785 | /* | |
4786 | * mutex taken to ensure that there is no race between differnt | |
4787 | * drrs calls trying to update refresh rate. This scenario may occur | |
4788 | * in future when idleness detection based DRRS in kernel and | |
4789 | * possible calls from user space to set differnt RR are made. | |
4790 | */ | |
4791 | ||
4792 | mutex_lock(&intel_dp->drrs_state.mutex); | |
4793 | ||
4794 | intel_dp->drrs_state.refresh_rate_type = index; | |
4795 | ||
4796 | mutex_unlock(&intel_dp->drrs_state.mutex); | |
4797 | ||
4798 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
4799 | } | |
4800 | ||
4f9db5b5 PB |
4801 | static struct drm_display_mode * |
4802 | intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, | |
4803 | struct intel_connector *intel_connector, | |
4804 | struct drm_display_mode *fixed_mode) | |
4805 | { | |
4806 | struct drm_connector *connector = &intel_connector->base; | |
4807 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4808 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4809 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4810 | struct drm_display_mode *downclock_mode = NULL; | |
4811 | ||
4812 | if (INTEL_INFO(dev)->gen <= 6) { | |
4813 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
4814 | return NULL; | |
4815 | } | |
4816 | ||
4817 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 4818 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
4819 | return NULL; |
4820 | } | |
4821 | ||
4822 | downclock_mode = intel_find_panel_downclock | |
4823 | (dev, fixed_mode, connector); | |
4824 | ||
4825 | if (!downclock_mode) { | |
4079b8d1 | 4826 | DRM_DEBUG_KMS("DRRS not supported\n"); |
4f9db5b5 PB |
4827 | return NULL; |
4828 | } | |
4829 | ||
439d7ac0 PB |
4830 | dev_priv->drrs.connector = intel_connector; |
4831 | ||
4832 | mutex_init(&intel_dp->drrs_state.mutex); | |
4833 | ||
4f9db5b5 PB |
4834 | intel_dp->drrs_state.type = dev_priv->vbt.drrs_type; |
4835 | ||
4836 | intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; | |
4079b8d1 | 4837 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
4838 | return downclock_mode; |
4839 | } | |
4840 | ||
aba86890 ID |
4841 | void intel_edp_panel_vdd_sanitize(struct intel_encoder *intel_encoder) |
4842 | { | |
4843 | struct drm_device *dev = intel_encoder->base.dev; | |
4844 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4845 | struct intel_dp *intel_dp; | |
4846 | enum intel_display_power_domain power_domain; | |
4847 | ||
4848 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4849 | return; | |
4850 | ||
4851 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
773538e8 VS |
4852 | |
4853 | pps_lock(intel_dp); | |
4854 | ||
aba86890 | 4855 | if (!edp_have_panel_vdd(intel_dp)) |
e39b999a | 4856 | goto out; |
aba86890 ID |
4857 | /* |
4858 | * The VDD bit needs a power domain reference, so if the bit is | |
4859 | * already enabled when we boot or resume, grab this reference and | |
4860 | * schedule a vdd off, so we don't hold on to the reference | |
4861 | * indefinitely. | |
4862 | */ | |
4863 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4864 | power_domain = intel_display_port_power_domain(intel_encoder); | |
4865 | intel_display_power_get(dev_priv, power_domain); | |
4866 | ||
4867 | edp_panel_vdd_schedule_off(intel_dp); | |
e39b999a | 4868 | out: |
773538e8 | 4869 | pps_unlock(intel_dp); |
aba86890 ID |
4870 | } |
4871 | ||
ed92f0b2 | 4872 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
0095e6dc PZ |
4873 | struct intel_connector *intel_connector, |
4874 | struct edp_power_seq *power_seq) | |
ed92f0b2 PZ |
4875 | { |
4876 | struct drm_connector *connector = &intel_connector->base; | |
4877 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
4878 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4879 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
4880 | struct drm_i915_private *dev_priv = dev->dev_private; |
4881 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 4882 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
4883 | bool has_dpcd; |
4884 | struct drm_display_mode *scan; | |
4885 | struct edid *edid; | |
4886 | ||
4f9db5b5 PB |
4887 | intel_dp->drrs_state.type = DRRS_NOT_SUPPORTED; |
4888 | ||
ed92f0b2 PZ |
4889 | if (!is_edp(intel_dp)) |
4890 | return true; | |
4891 | ||
aba86890 | 4892 | intel_edp_panel_vdd_sanitize(intel_encoder); |
63635217 | 4893 | |
ed92f0b2 | 4894 | /* Cache DPCD and EDID for edp. */ |
24f3e092 | 4895 | intel_edp_panel_vdd_on(intel_dp); |
ed92f0b2 | 4896 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
1e0560e0 | 4897 | intel_edp_panel_vdd_off(intel_dp, false); |
ed92f0b2 PZ |
4898 | |
4899 | if (has_dpcd) { | |
4900 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
4901 | dev_priv->no_aux_handshake = | |
4902 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
4903 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
4904 | } else { | |
4905 | /* if this fails, presume the device is a ghost */ | |
4906 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
4907 | return false; |
4908 | } | |
4909 | ||
4910 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 4911 | pps_lock(intel_dp); |
0095e6dc | 4912 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, power_seq); |
773538e8 | 4913 | pps_unlock(intel_dp); |
ed92f0b2 | 4914 | |
060c8778 | 4915 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 4916 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
4917 | if (edid) { |
4918 | if (drm_add_edid_modes(connector, edid)) { | |
4919 | drm_mode_connector_update_edid_property(connector, | |
4920 | edid); | |
4921 | drm_edid_to_eld(connector, edid); | |
4922 | } else { | |
4923 | kfree(edid); | |
4924 | edid = ERR_PTR(-EINVAL); | |
4925 | } | |
4926 | } else { | |
4927 | edid = ERR_PTR(-ENOENT); | |
4928 | } | |
4929 | intel_connector->edid = edid; | |
4930 | ||
4931 | /* prefer fixed mode from EDID if available */ | |
4932 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
4933 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
4934 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 PB |
4935 | downclock_mode = intel_dp_drrs_init( |
4936 | intel_dig_port, | |
4937 | intel_connector, fixed_mode); | |
ed92f0b2 PZ |
4938 | break; |
4939 | } | |
4940 | } | |
4941 | ||
4942 | /* fallback to VBT if available for eDP */ | |
4943 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
4944 | fixed_mode = drm_mode_duplicate(dev, | |
4945 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
4946 | if (fixed_mode) | |
4947 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
4948 | } | |
060c8778 | 4949 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 4950 | |
01527b31 CT |
4951 | if (IS_VALLEYVIEW(dev)) { |
4952 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
4953 | register_reboot_notifier(&intel_dp->edp_notifier); | |
4954 | } | |
4955 | ||
4f9db5b5 | 4956 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 4957 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
ed92f0b2 PZ |
4958 | intel_panel_setup_backlight(connector); |
4959 | ||
4960 | return true; | |
4961 | } | |
4962 | ||
16c25533 | 4963 | bool |
f0fec3f2 PZ |
4964 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
4965 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 4966 | { |
f0fec3f2 PZ |
4967 | struct drm_connector *connector = &intel_connector->base; |
4968 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4969 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
4970 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 4971 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 4972 | enum port port = intel_dig_port->port; |
0095e6dc | 4973 | struct edp_power_seq power_seq = { 0 }; |
0b99836f | 4974 | int type; |
a4fc5ed6 | 4975 | |
a4a5d2f8 VS |
4976 | intel_dp->pps_pipe = INVALID_PIPE; |
4977 | ||
ec5b01dd DL |
4978 | /* intel_dp vfuncs */ |
4979 | if (IS_VALLEYVIEW(dev)) | |
4980 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; | |
4981 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
4982 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
4983 | else if (HAS_PCH_SPLIT(dev)) | |
4984 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
4985 | else | |
4986 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
4987 | ||
153b1100 DL |
4988 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; |
4989 | ||
0767935e DV |
4990 | /* Preserve the current hw state. */ |
4991 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 4992 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 4993 | |
3b32a35b | 4994 | if (intel_dp_is_edp(dev, port)) |
b329530c | 4995 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
4996 | else |
4997 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 4998 | |
f7d24902 ID |
4999 | /* |
5000 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5001 | * for DP the encoder type can be set by the caller to | |
5002 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5003 | */ | |
5004 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5005 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5006 | ||
e7281eab ID |
5007 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5008 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5009 | port_name(port)); | |
5010 | ||
b329530c | 5011 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5012 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5013 | ||
a4fc5ed6 KP |
5014 | connector->interlace_allowed = true; |
5015 | connector->doublescan_allowed = 0; | |
5016 | ||
f0fec3f2 | 5017 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5018 | edp_panel_vdd_work); |
a4fc5ed6 | 5019 | |
df0e9248 | 5020 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5021 | drm_connector_register(connector); |
a4fc5ed6 | 5022 | |
affa9354 | 5023 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5024 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5025 | else | |
5026 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5027 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5028 | |
0b99836f | 5029 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5030 | switch (port) { |
5031 | case PORT_A: | |
1d843f9d | 5032 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5033 | break; |
5034 | case PORT_B: | |
1d843f9d | 5035 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5036 | break; |
5037 | case PORT_C: | |
1d843f9d | 5038 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5039 | break; |
5040 | case PORT_D: | |
1d843f9d | 5041 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5042 | break; |
5043 | default: | |
ad1c0b19 | 5044 | BUG(); |
5eb08b69 ZW |
5045 | } |
5046 | ||
dada1a9f | 5047 | if (is_edp(intel_dp)) { |
773538e8 | 5048 | pps_lock(intel_dp); |
a4a5d2f8 VS |
5049 | if (IS_VALLEYVIEW(dev)) { |
5050 | vlv_initial_power_sequencer_setup(intel_dp); | |
5051 | } else { | |
5052 | intel_dp_init_panel_power_timestamps(intel_dp); | |
5053 | intel_dp_init_panel_power_sequencer(dev, intel_dp, | |
5054 | &power_seq); | |
5055 | } | |
773538e8 | 5056 | pps_unlock(intel_dp); |
dada1a9f | 5057 | } |
0095e6dc | 5058 | |
9d1a1031 | 5059 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5060 | |
0e32b39c DA |
5061 | /* init MST on ports that can support it */ |
5062 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
5063 | if (port == PORT_B || port == PORT_C || port == PORT_D) { | |
a4a5d2f8 VS |
5064 | intel_dp_mst_encoder_init(intel_dig_port, |
5065 | intel_connector->base.base.id); | |
0e32b39c DA |
5066 | } |
5067 | } | |
5068 | ||
0095e6dc | 5069 | if (!intel_edp_init_connector(intel_dp, intel_connector, &power_seq)) { |
4f71d0cb | 5070 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5071 | if (is_edp(intel_dp)) { |
5072 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
773538e8 | 5073 | pps_lock(intel_dp); |
4be73780 | 5074 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5075 | pps_unlock(intel_dp); |
15b1d171 | 5076 | } |
34ea3d38 | 5077 | drm_connector_unregister(connector); |
b2f246a8 | 5078 | drm_connector_cleanup(connector); |
16c25533 | 5079 | return false; |
b2f246a8 | 5080 | } |
32f9d658 | 5081 | |
f684960e CW |
5082 | intel_dp_add_properties(intel_dp, connector); |
5083 | ||
a4fc5ed6 KP |
5084 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5085 | * 0xd. Failure to do so will result in spurious interrupts being | |
5086 | * generated on the port when a cable is not attached. | |
5087 | */ | |
5088 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5089 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5090 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5091 | } | |
16c25533 PZ |
5092 | |
5093 | return true; | |
a4fc5ed6 | 5094 | } |
f0fec3f2 PZ |
5095 | |
5096 | void | |
5097 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5098 | { | |
13cf5504 | 5099 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5100 | struct intel_digital_port *intel_dig_port; |
5101 | struct intel_encoder *intel_encoder; | |
5102 | struct drm_encoder *encoder; | |
5103 | struct intel_connector *intel_connector; | |
5104 | ||
b14c5679 | 5105 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5106 | if (!intel_dig_port) |
5107 | return; | |
5108 | ||
b14c5679 | 5109 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
5110 | if (!intel_connector) { |
5111 | kfree(intel_dig_port); | |
5112 | return; | |
5113 | } | |
5114 | ||
5115 | intel_encoder = &intel_dig_port->base; | |
5116 | encoder = &intel_encoder->base; | |
5117 | ||
5118 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5119 | DRM_MODE_ENCODER_TMDS); | |
5120 | ||
5bfe2ac0 | 5121 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5122 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5123 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5124 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5125 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5126 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5127 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5128 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5129 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5130 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5131 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5132 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5133 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5134 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5135 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5136 | } else { |
ecff4f3b JN |
5137 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5138 | intel_encoder->enable = g4x_enable_dp; | |
49277c31 | 5139 | intel_encoder->post_disable = g4x_post_disable_dp; |
ab1f90f9 | 5140 | } |
f0fec3f2 | 5141 | |
174edf1f | 5142 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5143 | intel_dig_port->dp.output_reg = output_reg; |
5144 | ||
00c09d70 | 5145 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5146 | if (IS_CHERRYVIEW(dev)) { |
5147 | if (port == PORT_D) | |
5148 | intel_encoder->crtc_mask = 1 << 2; | |
5149 | else | |
5150 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5151 | } else { | |
5152 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5153 | } | |
bc079e8b | 5154 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5155 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5156 | ||
13cf5504 DA |
5157 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5158 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5159 | ||
15b1d171 PZ |
5160 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5161 | drm_encoder_cleanup(encoder); | |
5162 | kfree(intel_dig_port); | |
b2f246a8 | 5163 | kfree(intel_connector); |
15b1d171 | 5164 | } |
f0fec3f2 | 5165 | } |
0e32b39c DA |
5166 | |
5167 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5168 | { | |
5169 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5170 | int i; | |
5171 | ||
5172 | /* disable MST */ | |
5173 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5174 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5175 | if (!intel_dig_port) | |
5176 | continue; | |
5177 | ||
5178 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5179 | if (!intel_dig_port->dp.can_mst) | |
5180 | continue; | |
5181 | if (intel_dig_port->dp.is_mst) | |
5182 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5183 | } | |
5184 | } | |
5185 | } | |
5186 | ||
5187 | void intel_dp_mst_resume(struct drm_device *dev) | |
5188 | { | |
5189 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5190 | int i; | |
5191 | ||
5192 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5193 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5194 | if (!intel_dig_port) | |
5195 | continue; | |
5196 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5197 | int ret; | |
5198 | ||
5199 | if (!intel_dig_port->dp.can_mst) | |
5200 | continue; | |
5201 | ||
5202 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5203 | if (ret != 0) { | |
5204 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5205 | } | |
5206 | } | |
5207 | } | |
5208 | } |