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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 | } | |
bf13e81b | 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; | |
bf13e81b JN |
451 | } |
452 | ||
a4a5d2f8 VS |
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 | } | |
bf13e81b JN |
488 | } |
489 | ||
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 | ||
951468f3 VS |
1357 | /* |
1358 | * Must be paired with edp_panel_vdd_off(). | |
1359 | * Must hold pps_mutex around the whole on/off sequence. | |
1360 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1361 | */ | |
1e0560e0 | 1362 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1363 | { |
30add22d | 1364 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1365 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1366 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1367 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1368 | enum intel_display_power_domain power_domain; |
5d613501 | 1369 | u32 pp; |
453c5420 | 1370 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1371 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1372 | |
e39b999a VS |
1373 | lockdep_assert_held(&dev_priv->pps_mutex); |
1374 | ||
97af61f5 | 1375 | if (!is_edp(intel_dp)) |
adddaaf4 | 1376 | return false; |
bd943159 KP |
1377 | |
1378 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 1379 | |
4be73780 | 1380 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1381 | return need_to_disable; |
b0665d57 | 1382 | |
4e6e1a54 ID |
1383 | power_domain = intel_display_port_power_domain(intel_encoder); |
1384 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1385 | |
b0665d57 | 1386 | DRM_DEBUG_KMS("Turning eDP VDD on\n"); |
bd943159 | 1387 | |
4be73780 DV |
1388 | if (!edp_have_panel_power(intel_dp)) |
1389 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1390 | |
453c5420 | 1391 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1392 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1393 | |
bf13e81b JN |
1394 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1395 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1396 | |
1397 | I915_WRITE(pp_ctrl_reg, pp); | |
1398 | POSTING_READ(pp_ctrl_reg); | |
1399 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1400 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1401 | /* |
1402 | * If the panel wasn't on, delay before accessing aux channel | |
1403 | */ | |
4be73780 | 1404 | if (!edp_have_panel_power(intel_dp)) { |
bd943159 | 1405 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1406 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1407 | } |
adddaaf4 JN |
1408 | |
1409 | return need_to_disable; | |
1410 | } | |
1411 | ||
951468f3 VS |
1412 | /* |
1413 | * Must be paired with intel_edp_panel_vdd_off() or | |
1414 | * intel_edp_panel_off(). | |
1415 | * Nested calls to these functions are not allowed since | |
1416 | * we drop the lock. Caller must use some higher level | |
1417 | * locking to prevent nested calls from other threads. | |
1418 | */ | |
b80d6c78 | 1419 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1420 | { |
c695b6b6 | 1421 | bool vdd; |
adddaaf4 | 1422 | |
c695b6b6 VS |
1423 | if (!is_edp(intel_dp)) |
1424 | return; | |
1425 | ||
773538e8 | 1426 | pps_lock(intel_dp); |
c695b6b6 | 1427 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1428 | pps_unlock(intel_dp); |
c695b6b6 VS |
1429 | |
1430 | WARN(!vdd, "eDP VDD already requested on\n"); | |
5d613501 JB |
1431 | } |
1432 | ||
4be73780 | 1433 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1434 | { |
30add22d | 1435 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1436 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1437 | struct intel_digital_port *intel_dig_port = |
1438 | dp_to_dig_port(intel_dp); | |
1439 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1440 | enum intel_display_power_domain power_domain; | |
5d613501 | 1441 | u32 pp; |
453c5420 | 1442 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1443 | |
e39b999a | 1444 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1445 | |
15e899a0 | 1446 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1447 | |
15e899a0 | 1448 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1449 | return; |
b0665d57 | 1450 | |
be2c9196 | 1451 | DRM_DEBUG_KMS("Turning eDP VDD off\n"); |
bd943159 | 1452 | |
be2c9196 VS |
1453 | pp = ironlake_get_pp_control(intel_dp); |
1454 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1455 | |
be2c9196 VS |
1456 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1457 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
453c5420 | 1458 | |
be2c9196 VS |
1459 | I915_WRITE(pp_ctrl_reg, pp); |
1460 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1461 | |
be2c9196 VS |
1462 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1463 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1464 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
90791a5c | 1465 | |
be2c9196 VS |
1466 | if ((pp & POWER_TARGET_ON) == 0) |
1467 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1468 | |
be2c9196 VS |
1469 | power_domain = intel_display_port_power_domain(intel_encoder); |
1470 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1471 | } |
5d613501 | 1472 | |
4be73780 | 1473 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1474 | { |
1475 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1476 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1477 | |
773538e8 | 1478 | pps_lock(intel_dp); |
15e899a0 VS |
1479 | if (!intel_dp->want_panel_vdd) |
1480 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1481 | pps_unlock(intel_dp); |
bd943159 KP |
1482 | } |
1483 | ||
aba86890 ID |
1484 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1485 | { | |
1486 | unsigned long delay; | |
1487 | ||
1488 | /* | |
1489 | * Queue the timer to fire a long time from now (relative to the power | |
1490 | * down delay) to keep the panel power up across a sequence of | |
1491 | * operations. | |
1492 | */ | |
1493 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1494 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1495 | } | |
1496 | ||
951468f3 VS |
1497 | /* |
1498 | * Must be paired with edp_panel_vdd_on(). | |
1499 | * Must hold pps_mutex around the whole on/off sequence. | |
1500 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1501 | */ | |
4be73780 | 1502 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1503 | { |
e39b999a VS |
1504 | struct drm_i915_private *dev_priv = |
1505 | intel_dp_to_dev(intel_dp)->dev_private; | |
1506 | ||
1507 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1508 | ||
97af61f5 KP |
1509 | if (!is_edp(intel_dp)) |
1510 | return; | |
5d613501 | 1511 | |
bd943159 | 1512 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); |
f2e8b18a | 1513 | |
bd943159 KP |
1514 | intel_dp->want_panel_vdd = false; |
1515 | ||
aba86890 | 1516 | if (sync) |
4be73780 | 1517 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1518 | else |
1519 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1520 | } |
1521 | ||
951468f3 VS |
1522 | /* |
1523 | * Must be paired with intel_edp_panel_vdd_on(). | |
1524 | * Nested calls to these functions are not allowed since | |
1525 | * we drop the lock. Caller must use some higher level | |
1526 | * locking to prevent nested calls from other threads. | |
1527 | */ | |
1e0560e0 VS |
1528 | static void intel_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
1529 | { | |
e39b999a VS |
1530 | if (!is_edp(intel_dp)) |
1531 | return; | |
1532 | ||
773538e8 | 1533 | pps_lock(intel_dp); |
1e0560e0 | 1534 | edp_panel_vdd_off(intel_dp, sync); |
773538e8 | 1535 | pps_unlock(intel_dp); |
1e0560e0 VS |
1536 | } |
1537 | ||
4be73780 | 1538 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1539 | { |
30add22d | 1540 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1541 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1542 | u32 pp; |
453c5420 | 1543 | u32 pp_ctrl_reg; |
9934c132 | 1544 | |
97af61f5 | 1545 | if (!is_edp(intel_dp)) |
bd943159 | 1546 | return; |
99ea7127 KP |
1547 | |
1548 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1549 | ||
773538e8 | 1550 | pps_lock(intel_dp); |
e39b999a | 1551 | |
4be73780 | 1552 | if (edp_have_panel_power(intel_dp)) { |
99ea7127 | 1553 | DRM_DEBUG_KMS("eDP power already on\n"); |
e39b999a | 1554 | goto out; |
99ea7127 | 1555 | } |
9934c132 | 1556 | |
4be73780 | 1557 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1558 | |
bf13e81b | 1559 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1560 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1561 | if (IS_GEN5(dev)) { |
1562 | /* ILK workaround: disable reset around power sequence */ | |
1563 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1564 | I915_WRITE(pp_ctrl_reg, pp); |
1565 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1566 | } |
37c6c9b0 | 1567 | |
1c0ae80a | 1568 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1569 | if (!IS_GEN5(dev)) |
1570 | pp |= PANEL_POWER_RESET; | |
1571 | ||
453c5420 JB |
1572 | I915_WRITE(pp_ctrl_reg, pp); |
1573 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1574 | |
4be73780 | 1575 | wait_panel_on(intel_dp); |
dce56b3c | 1576 | intel_dp->last_power_on = jiffies; |
9934c132 | 1577 | |
05ce1a49 KP |
1578 | if (IS_GEN5(dev)) { |
1579 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1580 | I915_WRITE(pp_ctrl_reg, pp); |
1581 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1582 | } |
e39b999a VS |
1583 | |
1584 | out: | |
773538e8 | 1585 | pps_unlock(intel_dp); |
9934c132 JB |
1586 | } |
1587 | ||
4be73780 | 1588 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1589 | { |
4e6e1a54 ID |
1590 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1591 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1592 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1593 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1594 | enum intel_display_power_domain power_domain; |
99ea7127 | 1595 | u32 pp; |
453c5420 | 1596 | u32 pp_ctrl_reg; |
9934c132 | 1597 | |
97af61f5 KP |
1598 | if (!is_edp(intel_dp)) |
1599 | return; | |
37c6c9b0 | 1600 | |
99ea7127 | 1601 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1602 | |
773538e8 | 1603 | pps_lock(intel_dp); |
e39b999a | 1604 | |
24f3e092 JN |
1605 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
1606 | ||
453c5420 | 1607 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1608 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1609 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1610 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1611 | EDP_BLC_ENABLE); | |
453c5420 | 1612 | |
bf13e81b | 1613 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1614 | |
849e39f5 PZ |
1615 | intel_dp->want_panel_vdd = false; |
1616 | ||
453c5420 JB |
1617 | I915_WRITE(pp_ctrl_reg, pp); |
1618 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1619 | |
dce56b3c | 1620 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1621 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1622 | |
1623 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1624 | power_domain = intel_display_port_power_domain(intel_encoder); |
1625 | intel_display_power_put(dev_priv, power_domain); | |
e39b999a | 1626 | |
773538e8 | 1627 | pps_unlock(intel_dp); |
9934c132 JB |
1628 | } |
1629 | ||
1250d107 JN |
1630 | /* Enable backlight in the panel power control. */ |
1631 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1632 | { |
da63a9f2 PZ |
1633 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1634 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1635 | struct drm_i915_private *dev_priv = dev->dev_private; |
1636 | u32 pp; | |
453c5420 | 1637 | u32 pp_ctrl_reg; |
32f9d658 | 1638 | |
01cb9ea6 JB |
1639 | /* |
1640 | * If we enable the backlight right away following a panel power | |
1641 | * on, we may see slight flicker as the panel syncs with the eDP | |
1642 | * link. So delay a bit to make sure the image is solid before | |
1643 | * allowing it to appear. | |
1644 | */ | |
4be73780 | 1645 | wait_backlight_on(intel_dp); |
e39b999a | 1646 | |
773538e8 | 1647 | pps_lock(intel_dp); |
e39b999a | 1648 | |
453c5420 | 1649 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1650 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1651 | |
bf13e81b | 1652 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1653 | |
1654 | I915_WRITE(pp_ctrl_reg, pp); | |
1655 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1656 | |
773538e8 | 1657 | pps_unlock(intel_dp); |
32f9d658 ZW |
1658 | } |
1659 | ||
1250d107 JN |
1660 | /* Enable backlight PWM and backlight PP control. */ |
1661 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1662 | { | |
1663 | if (!is_edp(intel_dp)) | |
1664 | return; | |
1665 | ||
1666 | DRM_DEBUG_KMS("\n"); | |
1667 | ||
1668 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1669 | _intel_edp_backlight_on(intel_dp); | |
1670 | } | |
1671 | ||
1672 | /* Disable backlight in the panel power control. */ | |
1673 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 1674 | { |
30add22d | 1675 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1676 | struct drm_i915_private *dev_priv = dev->dev_private; |
1677 | u32 pp; | |
453c5420 | 1678 | u32 pp_ctrl_reg; |
32f9d658 | 1679 | |
f01eca2e KP |
1680 | if (!is_edp(intel_dp)) |
1681 | return; | |
1682 | ||
773538e8 | 1683 | pps_lock(intel_dp); |
e39b999a | 1684 | |
453c5420 | 1685 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1686 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1687 | |
bf13e81b | 1688 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1689 | |
1690 | I915_WRITE(pp_ctrl_reg, pp); | |
1691 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 1692 | |
773538e8 | 1693 | pps_unlock(intel_dp); |
e39b999a VS |
1694 | |
1695 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 1696 | edp_wait_backlight_off(intel_dp); |
1250d107 | 1697 | } |
f7d2323c | 1698 | |
1250d107 JN |
1699 | /* Disable backlight PP control and backlight PWM. */ |
1700 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
1701 | { | |
1702 | if (!is_edp(intel_dp)) | |
1703 | return; | |
1704 | ||
1705 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 1706 | |
1250d107 | 1707 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 1708 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 1709 | } |
a4fc5ed6 | 1710 | |
73580fb7 JN |
1711 | /* |
1712 | * Hook for controlling the panel power control backlight through the bl_power | |
1713 | * sysfs attribute. Take care to handle multiple calls. | |
1714 | */ | |
1715 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
1716 | bool enable) | |
1717 | { | |
1718 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
1719 | bool is_enabled; |
1720 | ||
773538e8 | 1721 | pps_lock(intel_dp); |
e39b999a | 1722 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 1723 | pps_unlock(intel_dp); |
73580fb7 JN |
1724 | |
1725 | if (is_enabled == enable) | |
1726 | return; | |
1727 | ||
23ba9373 JN |
1728 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
1729 | enable ? "enable" : "disable"); | |
73580fb7 JN |
1730 | |
1731 | if (enable) | |
1732 | _intel_edp_backlight_on(intel_dp); | |
1733 | else | |
1734 | _intel_edp_backlight_off(intel_dp); | |
1735 | } | |
1736 | ||
2bd2ad64 | 1737 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1738 | { |
da63a9f2 PZ |
1739 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1740 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1741 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1742 | struct drm_i915_private *dev_priv = dev->dev_private; |
1743 | u32 dpa_ctl; | |
1744 | ||
2bd2ad64 DV |
1745 | assert_pipe_disabled(dev_priv, |
1746 | to_intel_crtc(crtc)->pipe); | |
1747 | ||
d240f20f JB |
1748 | DRM_DEBUG_KMS("\n"); |
1749 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1750 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1751 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1752 | ||
1753 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1754 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1755 | * enable bits here to ensure that we don't enable too much. */ | |
1756 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1757 | intel_dp->DP |= DP_PLL_ENABLE; | |
1758 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1759 | POSTING_READ(DP_A); |
1760 | udelay(200); | |
d240f20f JB |
1761 | } |
1762 | ||
2bd2ad64 | 1763 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1764 | { |
da63a9f2 PZ |
1765 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1766 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1767 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1768 | struct drm_i915_private *dev_priv = dev->dev_private; |
1769 | u32 dpa_ctl; | |
1770 | ||
2bd2ad64 DV |
1771 | assert_pipe_disabled(dev_priv, |
1772 | to_intel_crtc(crtc)->pipe); | |
1773 | ||
d240f20f | 1774 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1775 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1776 | "dp pll off, should be on\n"); | |
1777 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1778 | ||
1779 | /* We can't rely on the value tracked for the DP register in | |
1780 | * intel_dp->DP because link_down must not change that (otherwise link | |
1781 | * re-training will fail. */ | |
298b0b39 | 1782 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1783 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1784 | POSTING_READ(DP_A); |
d240f20f JB |
1785 | udelay(200); |
1786 | } | |
1787 | ||
c7ad3810 | 1788 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1789 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1790 | { |
1791 | int ret, i; | |
1792 | ||
1793 | /* Should have a valid DPCD by this point */ | |
1794 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1795 | return; | |
1796 | ||
1797 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
1798 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1799 | DP_SET_POWER_D3); | |
c7ad3810 JB |
1800 | } else { |
1801 | /* | |
1802 | * When turning on, we need to retry for 1ms to give the sink | |
1803 | * time to wake up. | |
1804 | */ | |
1805 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
1806 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1807 | DP_SET_POWER_D0); | |
c7ad3810 JB |
1808 | if (ret == 1) |
1809 | break; | |
1810 | msleep(1); | |
1811 | } | |
1812 | } | |
f9cac721 JN |
1813 | |
1814 | if (ret != 1) | |
1815 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
1816 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
1817 | } |
1818 | ||
19d8fe15 DV |
1819 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1820 | enum pipe *pipe) | |
d240f20f | 1821 | { |
19d8fe15 | 1822 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1823 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1824 | struct drm_device *dev = encoder->base.dev; |
1825 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
1826 | enum intel_display_power_domain power_domain; |
1827 | u32 tmp; | |
1828 | ||
1829 | power_domain = intel_display_port_power_domain(encoder); | |
1830 | if (!intel_display_power_enabled(dev_priv, power_domain)) | |
1831 | return false; | |
1832 | ||
1833 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
1834 | |
1835 | if (!(tmp & DP_PORT_EN)) | |
1836 | return false; | |
1837 | ||
bc7d38a4 | 1838 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1839 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
1840 | } else if (IS_CHERRYVIEW(dev)) { |
1841 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 1842 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1843 | *pipe = PORT_TO_PIPE(tmp); |
1844 | } else { | |
1845 | u32 trans_sel; | |
1846 | u32 trans_dp; | |
1847 | int i; | |
1848 | ||
1849 | switch (intel_dp->output_reg) { | |
1850 | case PCH_DP_B: | |
1851 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1852 | break; | |
1853 | case PCH_DP_C: | |
1854 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1855 | break; | |
1856 | case PCH_DP_D: | |
1857 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1858 | break; | |
1859 | default: | |
1860 | return true; | |
1861 | } | |
1862 | ||
055e393f | 1863 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
1864 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
1865 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1866 | *pipe = i; | |
1867 | return true; | |
1868 | } | |
1869 | } | |
19d8fe15 | 1870 | |
4a0833ec DV |
1871 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1872 | intel_dp->output_reg); | |
1873 | } | |
d240f20f | 1874 | |
19d8fe15 DV |
1875 | return true; |
1876 | } | |
d240f20f | 1877 | |
045ac3b5 JB |
1878 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1879 | struct intel_crtc_config *pipe_config) | |
1880 | { | |
1881 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1882 | u32 tmp, flags = 0; |
63000ef6 XZ |
1883 | struct drm_device *dev = encoder->base.dev; |
1884 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1885 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1886 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 1887 | int dotclock; |
045ac3b5 | 1888 | |
9ed109a7 DV |
1889 | tmp = I915_READ(intel_dp->output_reg); |
1890 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
1891 | pipe_config->has_audio = true; | |
1892 | ||
63000ef6 | 1893 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
1894 | if (tmp & DP_SYNC_HS_HIGH) |
1895 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1896 | else | |
1897 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1898 | |
63000ef6 XZ |
1899 | if (tmp & DP_SYNC_VS_HIGH) |
1900 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1901 | else | |
1902 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1903 | } else { | |
1904 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1905 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1906 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1907 | else | |
1908 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1909 | |
63000ef6 XZ |
1910 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1911 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1912 | else | |
1913 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1914 | } | |
045ac3b5 JB |
1915 | |
1916 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc | 1917 | |
eb14cb74 VS |
1918 | pipe_config->has_dp_encoder = true; |
1919 | ||
1920 | intel_dp_get_m_n(crtc, pipe_config); | |
1921 | ||
18442d08 | 1922 | if (port == PORT_A) { |
f1f644dc JB |
1923 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
1924 | pipe_config->port_clock = 162000; | |
1925 | else | |
1926 | pipe_config->port_clock = 270000; | |
1927 | } | |
18442d08 VS |
1928 | |
1929 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
1930 | &pipe_config->dp_m_n); | |
1931 | ||
1932 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
1933 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
1934 | ||
241bfc38 | 1935 | pipe_config->adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 1936 | |
c6cd2ee2 JN |
1937 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
1938 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1939 | /* | |
1940 | * This is a big fat ugly hack. | |
1941 | * | |
1942 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1943 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1944 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1945 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1946 | * max, not what it tells us to use. | |
1947 | * | |
1948 | * Note: This will still be broken if the eDP panel is not lit | |
1949 | * up by the BIOS, and thus we can't get the mode at module | |
1950 | * load. | |
1951 | */ | |
1952 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1953 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1954 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1955 | } | |
045ac3b5 JB |
1956 | } |
1957 | ||
34eb7579 | 1958 | static bool is_edp_psr(struct intel_dp *intel_dp) |
2293bb5c | 1959 | { |
34eb7579 | 1960 | return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; |
2293bb5c SK |
1961 | } |
1962 | ||
2b28bb1b RV |
1963 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1964 | { | |
1965 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1966 | ||
18b5992c | 1967 | if (!HAS_PSR(dev)) |
2b28bb1b RV |
1968 | return false; |
1969 | ||
18b5992c | 1970 | return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE; |
2b28bb1b RV |
1971 | } |
1972 | ||
1973 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1974 | struct edp_vsc_psr *vsc_psr) | |
1975 | { | |
1976 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1977 | struct drm_device *dev = dig_port->base.base.dev; | |
1978 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1979 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1980 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
1981 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
1982 | uint32_t *data = (uint32_t *) vsc_psr; | |
1983 | unsigned int i; | |
1984 | ||
1985 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
1986 | the video DIP being updated before program video DIP data buffer | |
1987 | registers for DIP being updated. */ | |
1988 | I915_WRITE(ctl_reg, 0); | |
1989 | POSTING_READ(ctl_reg); | |
1990 | ||
1991 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
1992 | if (i < sizeof(struct edp_vsc_psr)) | |
1993 | I915_WRITE(data_reg + i, *data++); | |
1994 | else | |
1995 | I915_WRITE(data_reg + i, 0); | |
1996 | } | |
1997 | ||
1998 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
1999 | POSTING_READ(ctl_reg); | |
2000 | } | |
2001 | ||
2002 | static void intel_edp_psr_setup(struct intel_dp *intel_dp) | |
2003 | { | |
2004 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2005 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2006 | struct edp_vsc_psr psr_vsc; | |
2007 | ||
2b28bb1b RV |
2008 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ |
2009 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
2010 | psr_vsc.sdp_header.HB0 = 0; | |
2011 | psr_vsc.sdp_header.HB1 = 0x7; | |
2012 | psr_vsc.sdp_header.HB2 = 0x2; | |
2013 | psr_vsc.sdp_header.HB3 = 0x8; | |
2014 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
2015 | ||
2016 | /* Avoid continuous PSR exit by masking memup and hpd */ | |
18b5992c | 2017 | I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP | |
0cc4b699 | 2018 | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); |
2b28bb1b RV |
2019 | } |
2020 | ||
2021 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
2022 | { | |
0e0ae652 RV |
2023 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
2024 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b | 2025 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd | 2026 | uint32_t aux_clock_divider; |
2b28bb1b RV |
2027 | int precharge = 0x3; |
2028 | int msg_size = 5; /* Header(4) + Message(1) */ | |
0e0ae652 | 2029 | bool only_standby = false; |
2b28bb1b | 2030 | |
ec5b01dd DL |
2031 | aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0); |
2032 | ||
0e0ae652 RV |
2033 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) |
2034 | only_standby = true; | |
2035 | ||
2b28bb1b | 2036 | /* Enable PSR in sink */ |
0e0ae652 | 2037 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) |
9d1a1031 JN |
2038 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
2039 | DP_PSR_ENABLE & ~DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b | 2040 | else |
9d1a1031 JN |
2041 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
2042 | DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b RV |
2043 | |
2044 | /* Setup AUX registers */ | |
18b5992c BW |
2045 | I915_WRITE(EDP_PSR_AUX_DATA1(dev), EDP_PSR_DPCD_COMMAND); |
2046 | I915_WRITE(EDP_PSR_AUX_DATA2(dev), EDP_PSR_DPCD_NORMAL_OPERATION); | |
2047 | I915_WRITE(EDP_PSR_AUX_CTL(dev), | |
2b28bb1b RV |
2048 | DP_AUX_CH_CTL_TIME_OUT_400us | |
2049 | (msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
2050 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
2051 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
2052 | } | |
2053 | ||
2054 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
2055 | { | |
0e0ae652 RV |
2056 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
2057 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b RV |
2058 | struct drm_i915_private *dev_priv = dev->dev_private; |
2059 | uint32_t max_sleep_time = 0x1f; | |
2060 | uint32_t idle_frames = 1; | |
2061 | uint32_t val = 0x0; | |
ed8546ac | 2062 | const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES; |
0e0ae652 RV |
2063 | bool only_standby = false; |
2064 | ||
2065 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) | |
2066 | only_standby = true; | |
2b28bb1b | 2067 | |
0e0ae652 | 2068 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) { |
2b28bb1b RV |
2069 | val |= EDP_PSR_LINK_STANDBY; |
2070 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
2071 | val |= EDP_PSR_TP1_TIME_0us; | |
2072 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
82c56254 | 2073 | val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0; |
2b28bb1b RV |
2074 | } else |
2075 | val |= EDP_PSR_LINK_DISABLE; | |
2076 | ||
18b5992c | 2077 | I915_WRITE(EDP_PSR_CTL(dev), val | |
24bd9bf5 | 2078 | (IS_BROADWELL(dev) ? 0 : link_entry_time) | |
2b28bb1b RV |
2079 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | |
2080 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
2081 | EDP_PSR_ENABLE); | |
2082 | } | |
2083 | ||
3f51e471 RV |
2084 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
2085 | { | |
2086 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
2087 | struct drm_device *dev = dig_port->base.base.dev; | |
2088 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2089 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
2090 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3f51e471 | 2091 | |
f0355c4a | 2092 | lockdep_assert_held(&dev_priv->psr.lock); |
f0355c4a DV |
2093 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
2094 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
2095 | ||
a031d709 RV |
2096 | dev_priv->psr.source_ok = false; |
2097 | ||
9ca15301 | 2098 | if (IS_HASWELL(dev) && dig_port->port != PORT_A) { |
3f51e471 | 2099 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); |
3f51e471 RV |
2100 | return false; |
2101 | } | |
2102 | ||
d330a953 | 2103 | if (!i915.enable_psr) { |
105b7c11 | 2104 | DRM_DEBUG_KMS("PSR disable by flag\n"); |
105b7c11 RV |
2105 | return false; |
2106 | } | |
2107 | ||
4c8c7000 RV |
2108 | /* Below limitations aren't valid for Broadwell */ |
2109 | if (IS_BROADWELL(dev)) | |
2110 | goto out; | |
2111 | ||
3f51e471 RV |
2112 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & |
2113 | S3D_ENABLE) { | |
2114 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
3f51e471 RV |
2115 | return false; |
2116 | } | |
2117 | ||
ca73b4f0 | 2118 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { |
3f51e471 | 2119 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); |
3f51e471 RV |
2120 | return false; |
2121 | } | |
2122 | ||
4c8c7000 | 2123 | out: |
a031d709 | 2124 | dev_priv->psr.source_ok = true; |
3f51e471 RV |
2125 | return true; |
2126 | } | |
2127 | ||
3d739d92 | 2128 | static void intel_edp_psr_do_enable(struct intel_dp *intel_dp) |
2b28bb1b | 2129 | { |
7c8f8a70 RV |
2130 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2131 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2132 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2b28bb1b | 2133 | |
3638379c DV |
2134 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); |
2135 | WARN_ON(dev_priv->psr.active); | |
f0355c4a | 2136 | lockdep_assert_held(&dev_priv->psr.lock); |
2b28bb1b | 2137 | |
2b28bb1b RV |
2138 | /* Enable PSR on the panel */ |
2139 | intel_edp_psr_enable_sink(intel_dp); | |
2140 | ||
2141 | /* Enable PSR on the host */ | |
2142 | intel_edp_psr_enable_source(intel_dp); | |
7c8f8a70 | 2143 | |
7c8f8a70 | 2144 | dev_priv->psr.active = true; |
2b28bb1b RV |
2145 | } |
2146 | ||
3d739d92 RV |
2147 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
2148 | { | |
2149 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
109fc2ad | 2150 | struct drm_i915_private *dev_priv = dev->dev_private; |
3d739d92 | 2151 | |
4704c573 RV |
2152 | if (!HAS_PSR(dev)) { |
2153 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
2154 | return; | |
2155 | } | |
2156 | ||
34eb7579 RV |
2157 | if (!is_edp_psr(intel_dp)) { |
2158 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
2159 | return; | |
2160 | } | |
2161 | ||
f0355c4a | 2162 | mutex_lock(&dev_priv->psr.lock); |
109fc2ad DV |
2163 | if (dev_priv->psr.enabled) { |
2164 | DRM_DEBUG_KMS("PSR already in use\n"); | |
f0355c4a | 2165 | mutex_unlock(&dev_priv->psr.lock); |
109fc2ad DV |
2166 | return; |
2167 | } | |
2168 | ||
9ca15301 DV |
2169 | dev_priv->psr.busy_frontbuffer_bits = 0; |
2170 | ||
16487254 RV |
2171 | /* Setup PSR once */ |
2172 | intel_edp_psr_setup(intel_dp); | |
2173 | ||
7c8f8a70 | 2174 | if (intel_edp_psr_match_conditions(intel_dp)) |
9ca15301 | 2175 | dev_priv->psr.enabled = intel_dp; |
f0355c4a | 2176 | mutex_unlock(&dev_priv->psr.lock); |
3d739d92 RV |
2177 | } |
2178 | ||
2b28bb1b RV |
2179 | void intel_edp_psr_disable(struct intel_dp *intel_dp) |
2180 | { | |
2181 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2182 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2183 | ||
f0355c4a DV |
2184 | mutex_lock(&dev_priv->psr.lock); |
2185 | if (!dev_priv->psr.enabled) { | |
2186 | mutex_unlock(&dev_priv->psr.lock); | |
2187 | return; | |
2188 | } | |
2189 | ||
3638379c DV |
2190 | if (dev_priv->psr.active) { |
2191 | I915_WRITE(EDP_PSR_CTL(dev), | |
2192 | I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE); | |
2193 | ||
2194 | /* Wait till PSR is idle */ | |
2195 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) & | |
2196 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) | |
2197 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
2b28bb1b | 2198 | |
3638379c DV |
2199 | dev_priv->psr.active = false; |
2200 | } else { | |
2201 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); | |
2202 | } | |
7c8f8a70 | 2203 | |
2807cf69 | 2204 | dev_priv->psr.enabled = NULL; |
f0355c4a | 2205 | mutex_unlock(&dev_priv->psr.lock); |
9ca15301 DV |
2206 | |
2207 | cancel_delayed_work_sync(&dev_priv->psr.work); | |
2b28bb1b RV |
2208 | } |
2209 | ||
f02a326e | 2210 | static void intel_edp_psr_work(struct work_struct *work) |
7c8f8a70 RV |
2211 | { |
2212 | struct drm_i915_private *dev_priv = | |
2213 | container_of(work, typeof(*dev_priv), psr.work.work); | |
2807cf69 DV |
2214 | struct intel_dp *intel_dp = dev_priv->psr.enabled; |
2215 | ||
f0355c4a DV |
2216 | mutex_lock(&dev_priv->psr.lock); |
2217 | intel_dp = dev_priv->psr.enabled; | |
2218 | ||
2807cf69 | 2219 | if (!intel_dp) |
f0355c4a | 2220 | goto unlock; |
2807cf69 | 2221 | |
9ca15301 DV |
2222 | /* |
2223 | * The delayed work can race with an invalidate hence we need to | |
2224 | * recheck. Since psr_flush first clears this and then reschedules we | |
2225 | * won't ever miss a flush when bailing out here. | |
2226 | */ | |
2227 | if (dev_priv->psr.busy_frontbuffer_bits) | |
2228 | goto unlock; | |
2229 | ||
2230 | intel_edp_psr_do_enable(intel_dp); | |
f0355c4a DV |
2231 | unlock: |
2232 | mutex_unlock(&dev_priv->psr.lock); | |
3d739d92 RV |
2233 | } |
2234 | ||
9ca15301 | 2235 | static void intel_edp_psr_do_exit(struct drm_device *dev) |
7c8f8a70 RV |
2236 | { |
2237 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2238 | ||
3638379c DV |
2239 | if (dev_priv->psr.active) { |
2240 | u32 val = I915_READ(EDP_PSR_CTL(dev)); | |
2241 | ||
2242 | WARN_ON(!(val & EDP_PSR_ENABLE)); | |
2243 | ||
2244 | I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE); | |
2245 | ||
2246 | dev_priv->psr.active = false; | |
2247 | } | |
7c8f8a70 | 2248 | |
9ca15301 DV |
2249 | } |
2250 | ||
2251 | void intel_edp_psr_invalidate(struct drm_device *dev, | |
2252 | unsigned frontbuffer_bits) | |
2253 | { | |
2254 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2255 | struct drm_crtc *crtc; | |
2256 | enum pipe pipe; | |
2257 | ||
9ca15301 DV |
2258 | mutex_lock(&dev_priv->psr.lock); |
2259 | if (!dev_priv->psr.enabled) { | |
2260 | mutex_unlock(&dev_priv->psr.lock); | |
2261 | return; | |
2262 | } | |
2263 | ||
2264 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
2265 | pipe = to_intel_crtc(crtc)->pipe; | |
2266 | ||
2267 | intel_edp_psr_do_exit(dev); | |
2268 | ||
2269 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
2270 | ||
2271 | dev_priv->psr.busy_frontbuffer_bits |= frontbuffer_bits; | |
2272 | mutex_unlock(&dev_priv->psr.lock); | |
2273 | } | |
2274 | ||
2275 | void intel_edp_psr_flush(struct drm_device *dev, | |
2276 | unsigned frontbuffer_bits) | |
2277 | { | |
2278 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2279 | struct drm_crtc *crtc; | |
2280 | enum pipe pipe; | |
2281 | ||
9ca15301 DV |
2282 | mutex_lock(&dev_priv->psr.lock); |
2283 | if (!dev_priv->psr.enabled) { | |
2284 | mutex_unlock(&dev_priv->psr.lock); | |
2285 | return; | |
2286 | } | |
2287 | ||
2288 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
2289 | pipe = to_intel_crtc(crtc)->pipe; | |
2290 | dev_priv->psr.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
2291 | ||
2292 | /* | |
2293 | * On Haswell sprite plane updates don't result in a psr invalidating | |
2294 | * signal in the hardware. Which means we need to manually fake this in | |
2295 | * software for all flushes, not just when we've seen a preceding | |
2296 | * invalidation through frontbuffer rendering. | |
2297 | */ | |
2298 | if (IS_HASWELL(dev) && | |
2299 | (frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe))) | |
2300 | intel_edp_psr_do_exit(dev); | |
2301 | ||
2302 | if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits) | |
2303 | schedule_delayed_work(&dev_priv->psr.work, | |
2304 | msecs_to_jiffies(100)); | |
f0355c4a | 2305 | mutex_unlock(&dev_priv->psr.lock); |
7c8f8a70 RV |
2306 | } |
2307 | ||
2308 | void intel_edp_psr_init(struct drm_device *dev) | |
2309 | { | |
2310 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2311 | ||
7c8f8a70 | 2312 | INIT_DELAYED_WORK(&dev_priv->psr.work, intel_edp_psr_work); |
f0355c4a | 2313 | mutex_init(&dev_priv->psr.lock); |
7c8f8a70 RV |
2314 | } |
2315 | ||
e8cb4558 | 2316 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2317 | { |
e8cb4558 | 2318 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2319 | struct drm_device *dev = encoder->base.dev; |
6cb49835 DV |
2320 | |
2321 | /* Make sure the panel is off before trying to change the mode. But also | |
2322 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2323 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2324 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2325 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2326 | intel_edp_panel_off(intel_dp); |
3739850b | 2327 | |
08aff3fe VS |
2328 | /* disable the port before the pipe on g4x */ |
2329 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2330 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2331 | } |
2332 | ||
08aff3fe | 2333 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2334 | { |
2bd2ad64 | 2335 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2336 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2337 | |
49277c31 | 2338 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2339 | if (port == PORT_A) |
2340 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2341 | } |
2342 | ||
2343 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2344 | { | |
2345 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2346 | ||
2347 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2348 | } |
2349 | ||
580d3811 VS |
2350 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2351 | { | |
2352 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2353 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2354 | struct drm_device *dev = encoder->base.dev; | |
2355 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2356 | struct intel_crtc *intel_crtc = | |
2357 | to_intel_crtc(encoder->base.crtc); | |
2358 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2359 | enum pipe pipe = intel_crtc->pipe; | |
2360 | u32 val; | |
2361 | ||
2362 | intel_dp_link_down(intel_dp); | |
2363 | ||
2364 | mutex_lock(&dev_priv->dpio_lock); | |
2365 | ||
2366 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2367 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2368 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2369 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2370 | |
97fd4d5c VS |
2371 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2372 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2373 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2374 | ||
2375 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2376 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2377 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2378 | ||
2379 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2380 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2381 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2382 | |
2383 | mutex_unlock(&dev_priv->dpio_lock); | |
2384 | } | |
2385 | ||
7b13b58a VS |
2386 | static void |
2387 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2388 | uint32_t *DP, | |
2389 | uint8_t dp_train_pat) | |
2390 | { | |
2391 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2392 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2393 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2394 | enum port port = intel_dig_port->port; | |
2395 | ||
2396 | if (HAS_DDI(dev)) { | |
2397 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2398 | ||
2399 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2400 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2401 | else | |
2402 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2403 | ||
2404 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2405 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2406 | case DP_TRAINING_PATTERN_DISABLE: | |
2407 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2408 | ||
2409 | break; | |
2410 | case DP_TRAINING_PATTERN_1: | |
2411 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2412 | break; | |
2413 | case DP_TRAINING_PATTERN_2: | |
2414 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2415 | break; | |
2416 | case DP_TRAINING_PATTERN_3: | |
2417 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2418 | break; | |
2419 | } | |
2420 | I915_WRITE(DP_TP_CTL(port), temp); | |
2421 | ||
2422 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2423 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2424 | ||
2425 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2426 | case DP_TRAINING_PATTERN_DISABLE: | |
2427 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2428 | break; | |
2429 | case DP_TRAINING_PATTERN_1: | |
2430 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2431 | break; | |
2432 | case DP_TRAINING_PATTERN_2: | |
2433 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2434 | break; | |
2435 | case DP_TRAINING_PATTERN_3: | |
2436 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2437 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2438 | break; | |
2439 | } | |
2440 | ||
2441 | } else { | |
2442 | if (IS_CHERRYVIEW(dev)) | |
2443 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2444 | else | |
2445 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2446 | ||
2447 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2448 | case DP_TRAINING_PATTERN_DISABLE: | |
2449 | *DP |= DP_LINK_TRAIN_OFF; | |
2450 | break; | |
2451 | case DP_TRAINING_PATTERN_1: | |
2452 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2453 | break; | |
2454 | case DP_TRAINING_PATTERN_2: | |
2455 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2456 | break; | |
2457 | case DP_TRAINING_PATTERN_3: | |
2458 | if (IS_CHERRYVIEW(dev)) { | |
2459 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2460 | } else { | |
2461 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2462 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2463 | } | |
2464 | break; | |
2465 | } | |
2466 | } | |
2467 | } | |
2468 | ||
2469 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2470 | { | |
2471 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2472 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2473 | ||
2474 | intel_dp->DP |= DP_PORT_EN; | |
2475 | ||
2476 | /* enable with pattern 1 (as per spec) */ | |
2477 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2478 | DP_TRAINING_PATTERN_1); | |
2479 | ||
2480 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2481 | POSTING_READ(intel_dp->output_reg); | |
2482 | } | |
2483 | ||
e8cb4558 | 2484 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2485 | { |
e8cb4558 DV |
2486 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2487 | struct drm_device *dev = encoder->base.dev; | |
2488 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2489 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 2490 | |
0c33d8d7 DV |
2491 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2492 | return; | |
5d613501 | 2493 | |
7b13b58a | 2494 | intel_dp_enable_port(intel_dp); |
24f3e092 | 2495 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2496 | intel_edp_panel_on(intel_dp); |
1e0560e0 | 2497 | intel_edp_panel_vdd_off(intel_dp, true); |
f01eca2e | 2498 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2499 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2500 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2501 | intel_dp_stop_link_train(intel_dp); |
ab1f90f9 | 2502 | } |
89b667f8 | 2503 | |
ecff4f3b JN |
2504 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2505 | { | |
828f5c6e JN |
2506 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2507 | ||
ecff4f3b | 2508 | intel_enable_dp(encoder); |
4be73780 | 2509 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2510 | } |
89b667f8 | 2511 | |
ab1f90f9 JN |
2512 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2513 | { | |
828f5c6e JN |
2514 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2515 | ||
4be73780 | 2516 | intel_edp_backlight_on(intel_dp); |
d240f20f JB |
2517 | } |
2518 | ||
ecff4f3b | 2519 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2520 | { |
2521 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2522 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2523 | ||
8ac33ed3 DV |
2524 | intel_dp_prepare(encoder); |
2525 | ||
d41f1efb DV |
2526 | /* Only ilk+ has port A */ |
2527 | if (dport->port == PORT_A) { | |
2528 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2529 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2530 | } |
ab1f90f9 JN |
2531 | } |
2532 | ||
a4a5d2f8 VS |
2533 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2534 | enum pipe pipe) | |
2535 | { | |
2536 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2537 | struct intel_encoder *encoder; | |
2538 | ||
2539 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2540 | ||
2541 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
2542 | base.head) { | |
2543 | struct intel_dp *intel_dp; | |
773538e8 | 2544 | enum port port; |
a4a5d2f8 VS |
2545 | |
2546 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2547 | continue; | |
2548 | ||
2549 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2550 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2551 | |
2552 | if (intel_dp->pps_pipe != pipe) | |
2553 | continue; | |
2554 | ||
2555 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2556 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 VS |
2557 | |
2558 | /* make sure vdd is off before we steal it */ | |
2559 | edp_panel_vdd_off_sync(intel_dp); | |
2560 | ||
2561 | intel_dp->pps_pipe = INVALID_PIPE; | |
2562 | } | |
2563 | } | |
2564 | ||
2565 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2566 | { | |
2567 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2568 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2569 | struct drm_device *dev = encoder->base.dev; | |
2570 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2571 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
2572 | struct edp_power_seq power_seq; | |
2573 | ||
2574 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2575 | ||
2576 | if (intel_dp->pps_pipe == crtc->pipe) | |
2577 | return; | |
2578 | ||
2579 | /* | |
2580 | * If another power sequencer was being used on this | |
2581 | * port previously make sure to turn off vdd there while | |
2582 | * we still have control of it. | |
2583 | */ | |
2584 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
2585 | edp_panel_vdd_off_sync(intel_dp); | |
2586 | ||
2587 | /* | |
2588 | * We may be stealing the power | |
2589 | * sequencer from another port. | |
2590 | */ | |
2591 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2592 | ||
2593 | /* now it's all ours */ | |
2594 | intel_dp->pps_pipe = crtc->pipe; | |
2595 | ||
2596 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2597 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2598 | ||
2599 | /* init power sequencer on this pipe and port */ | |
2600 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
2601 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
2602 | &power_seq); | |
2603 | } | |
2604 | ||
ab1f90f9 | 2605 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2606 | { |
2bd2ad64 | 2607 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2608 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2609 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2610 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2611 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2612 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2613 | int pipe = intel_crtc->pipe; |
2614 | u32 val; | |
a4fc5ed6 | 2615 | |
ab1f90f9 | 2616 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2617 | |
ab3c759a | 2618 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2619 | val = 0; |
2620 | if (pipe) | |
2621 | val |= (1<<21); | |
2622 | else | |
2623 | val &= ~(1<<21); | |
2624 | val |= 0x001000c4; | |
ab3c759a CML |
2625 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2626 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2627 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2628 | |
ab1f90f9 JN |
2629 | mutex_unlock(&dev_priv->dpio_lock); |
2630 | ||
2cac613b | 2631 | if (is_edp(intel_dp)) { |
773538e8 | 2632 | pps_lock(intel_dp); |
a4a5d2f8 | 2633 | vlv_init_panel_power_sequencer(intel_dp); |
773538e8 | 2634 | pps_unlock(intel_dp); |
2cac613b | 2635 | } |
bf13e81b | 2636 | |
ab1f90f9 JN |
2637 | intel_enable_dp(encoder); |
2638 | ||
e4607fcf | 2639 | vlv_wait_port_ready(dev_priv, dport); |
89b667f8 JB |
2640 | } |
2641 | ||
ecff4f3b | 2642 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2643 | { |
2644 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2645 | struct drm_device *dev = encoder->base.dev; | |
2646 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2647 | struct intel_crtc *intel_crtc = |
2648 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2649 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2650 | int pipe = intel_crtc->pipe; |
89b667f8 | 2651 | |
8ac33ed3 DV |
2652 | intel_dp_prepare(encoder); |
2653 | ||
89b667f8 | 2654 | /* Program Tx lane resets to default */ |
0980a60f | 2655 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2656 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2657 | DPIO_PCS_TX_LANE2_RESET | |
2658 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2659 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2660 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2661 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2662 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2663 | DPIO_PCS_CLK_SOFT_RESET); | |
2664 | ||
2665 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2666 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2667 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2668 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2669 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2670 | } |
2671 | ||
e4a1d846 CML |
2672 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2673 | { | |
2674 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2675 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2676 | struct drm_device *dev = encoder->base.dev; | |
2677 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2678 | struct intel_crtc *intel_crtc = |
2679 | to_intel_crtc(encoder->base.crtc); | |
2680 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2681 | int pipe = intel_crtc->pipe; | |
2682 | int data, i; | |
949c1d43 | 2683 | u32 val; |
e4a1d846 | 2684 | |
e4a1d846 | 2685 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 VS |
2686 | |
2687 | /* Deassert soft data lane reset*/ | |
97fd4d5c | 2688 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2689 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2690 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2691 | ||
2692 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2693 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2694 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2695 | ||
2696 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2697 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2698 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2699 | |
97fd4d5c | 2700 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2701 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2702 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2703 | |
2704 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2705 | for (i = 0; i < 4; i++) { |
2706 | /* Set the latency optimal bit */ | |
2707 | data = (i == 1) ? 0x0 : 0x6; | |
2708 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2709 | data << DPIO_FRC_LATENCY_SHFIT); | |
2710 | ||
2711 | /* Set the upar bit */ | |
2712 | data = (i == 1) ? 0x0 : 0x1; | |
2713 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2714 | data << DPIO_UPAR_SHIFT); | |
2715 | } | |
2716 | ||
2717 | /* Data lane stagger programming */ | |
2718 | /* FIXME: Fix up value only after power analysis */ | |
2719 | ||
2720 | mutex_unlock(&dev_priv->dpio_lock); | |
2721 | ||
2722 | if (is_edp(intel_dp)) { | |
773538e8 | 2723 | pps_lock(intel_dp); |
a4a5d2f8 | 2724 | vlv_init_panel_power_sequencer(intel_dp); |
773538e8 | 2725 | pps_unlock(intel_dp); |
e4a1d846 CML |
2726 | } |
2727 | ||
2728 | intel_enable_dp(encoder); | |
2729 | ||
2730 | vlv_wait_port_ready(dev_priv, dport); | |
2731 | } | |
2732 | ||
9197c88b VS |
2733 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2734 | { | |
2735 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2736 | struct drm_device *dev = encoder->base.dev; | |
2737 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2738 | struct intel_crtc *intel_crtc = | |
2739 | to_intel_crtc(encoder->base.crtc); | |
2740 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2741 | enum pipe pipe = intel_crtc->pipe; | |
2742 | u32 val; | |
2743 | ||
625695f8 VS |
2744 | intel_dp_prepare(encoder); |
2745 | ||
9197c88b VS |
2746 | mutex_lock(&dev_priv->dpio_lock); |
2747 | ||
b9e5ac3c VS |
2748 | /* program left/right clock distribution */ |
2749 | if (pipe != PIPE_B) { | |
2750 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2751 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2752 | if (ch == DPIO_CH0) | |
2753 | val |= CHV_BUFLEFTENA1_FORCE; | |
2754 | if (ch == DPIO_CH1) | |
2755 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2756 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2757 | } else { | |
2758 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2759 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2760 | if (ch == DPIO_CH0) | |
2761 | val |= CHV_BUFLEFTENA2_FORCE; | |
2762 | if (ch == DPIO_CH1) | |
2763 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2764 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2765 | } | |
2766 | ||
9197c88b VS |
2767 | /* program clock channel usage */ |
2768 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2769 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2770 | if (pipe != PIPE_B) | |
2771 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2772 | else | |
2773 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2774 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2775 | ||
2776 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2777 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2778 | if (pipe != PIPE_B) | |
2779 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2780 | else | |
2781 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2782 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2783 | ||
2784 | /* | |
2785 | * This a a bit weird since generally CL | |
2786 | * matches the pipe, but here we need to | |
2787 | * pick the CL based on the port. | |
2788 | */ | |
2789 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2790 | if (pipe != PIPE_B) | |
2791 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2792 | else | |
2793 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2794 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2795 | ||
2796 | mutex_unlock(&dev_priv->dpio_lock); | |
2797 | } | |
2798 | ||
a4fc5ed6 | 2799 | /* |
df0c237d JB |
2800 | * Native read with retry for link status and receiver capability reads for |
2801 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2802 | * |
2803 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2804 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2805 | */ |
9d1a1031 JN |
2806 | static ssize_t |
2807 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2808 | void *buffer, size_t size) | |
a4fc5ed6 | 2809 | { |
9d1a1031 JN |
2810 | ssize_t ret; |
2811 | int i; | |
61da5fab | 2812 | |
61da5fab | 2813 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2814 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2815 | if (ret == size) | |
2816 | return ret; | |
61da5fab JB |
2817 | msleep(1); |
2818 | } | |
a4fc5ed6 | 2819 | |
9d1a1031 | 2820 | return ret; |
a4fc5ed6 KP |
2821 | } |
2822 | ||
2823 | /* | |
2824 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2825 | * link status information | |
2826 | */ | |
2827 | static bool | |
93f62dad | 2828 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2829 | { |
9d1a1031 JN |
2830 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2831 | DP_LANE0_1_STATUS, | |
2832 | link_status, | |
2833 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2834 | } |
2835 | ||
1100244e | 2836 | /* These are source-specific values. */ |
a4fc5ed6 | 2837 | static uint8_t |
1a2eb460 | 2838 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2839 | { |
30add22d | 2840 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2841 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2842 | |
9576c27f | 2843 | if (IS_VALLEYVIEW(dev)) |
bd60018a | 2844 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2845 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2846 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2847 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2848 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2849 | else |
bd60018a | 2850 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2851 | } |
2852 | ||
2853 | static uint8_t | |
2854 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2855 | { | |
30add22d | 2856 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2857 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2858 | |
9576c27f | 2859 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
d6c0d722 | 2860 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2861 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2862 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2863 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2864 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2865 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2866 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2867 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2868 | default: |
bd60018a | 2869 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2870 | } |
e2fa6fba P |
2871 | } else if (IS_VALLEYVIEW(dev)) { |
2872 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2873 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2874 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2875 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2876 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2877 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2878 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2879 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2880 | default: |
bd60018a | 2881 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2882 | } |
bc7d38a4 | 2883 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2884 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2885 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2886 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2887 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2888 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2889 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2890 | default: |
bd60018a | 2891 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2892 | } |
2893 | } else { | |
2894 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2895 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2896 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2897 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2898 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2899 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2900 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2901 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2902 | default: |
bd60018a | 2903 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2904 | } |
a4fc5ed6 KP |
2905 | } |
2906 | } | |
2907 | ||
e2fa6fba P |
2908 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2909 | { | |
2910 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2911 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2912 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2913 | struct intel_crtc *intel_crtc = |
2914 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2915 | unsigned long demph_reg_value, preemph_reg_value, |
2916 | uniqtranscale_reg_value; | |
2917 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2918 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2919 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2920 | |
2921 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2922 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2923 | preemph_reg_value = 0x0004000; |
2924 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2925 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2926 | demph_reg_value = 0x2B405555; |
2927 | uniqtranscale_reg_value = 0x552AB83A; | |
2928 | break; | |
bd60018a | 2929 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2930 | demph_reg_value = 0x2B404040; |
2931 | uniqtranscale_reg_value = 0x5548B83A; | |
2932 | break; | |
bd60018a | 2933 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2934 | demph_reg_value = 0x2B245555; |
2935 | uniqtranscale_reg_value = 0x5560B83A; | |
2936 | break; | |
bd60018a | 2937 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
2938 | demph_reg_value = 0x2B405555; |
2939 | uniqtranscale_reg_value = 0x5598DA3A; | |
2940 | break; | |
2941 | default: | |
2942 | return 0; | |
2943 | } | |
2944 | break; | |
bd60018a | 2945 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
2946 | preemph_reg_value = 0x0002000; |
2947 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2948 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2949 | demph_reg_value = 0x2B404040; |
2950 | uniqtranscale_reg_value = 0x5552B83A; | |
2951 | break; | |
bd60018a | 2952 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2953 | demph_reg_value = 0x2B404848; |
2954 | uniqtranscale_reg_value = 0x5580B83A; | |
2955 | break; | |
bd60018a | 2956 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2957 | demph_reg_value = 0x2B404040; |
2958 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2959 | break; | |
2960 | default: | |
2961 | return 0; | |
2962 | } | |
2963 | break; | |
bd60018a | 2964 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
2965 | preemph_reg_value = 0x0000000; |
2966 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2967 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2968 | demph_reg_value = 0x2B305555; |
2969 | uniqtranscale_reg_value = 0x5570B83A; | |
2970 | break; | |
bd60018a | 2971 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2972 | demph_reg_value = 0x2B2B4040; |
2973 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2974 | break; | |
2975 | default: | |
2976 | return 0; | |
2977 | } | |
2978 | break; | |
bd60018a | 2979 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
2980 | preemph_reg_value = 0x0006000; |
2981 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2982 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2983 | demph_reg_value = 0x1B405555; |
2984 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2985 | break; | |
2986 | default: | |
2987 | return 0; | |
2988 | } | |
2989 | break; | |
2990 | default: | |
2991 | return 0; | |
2992 | } | |
2993 | ||
0980a60f | 2994 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
2995 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
2996 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
2997 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 2998 | uniqtranscale_reg_value); |
ab3c759a CML |
2999 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3000 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3001 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3002 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3003 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3004 | |
3005 | return 0; | |
3006 | } | |
3007 | ||
e4a1d846 CML |
3008 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
3009 | { | |
3010 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3011 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3012 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3013 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3014 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3015 | uint8_t train_set = intel_dp->train_set[0]; |
3016 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3017 | enum pipe pipe = intel_crtc->pipe; |
3018 | int i; | |
e4a1d846 CML |
3019 | |
3020 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3021 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3022 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3023 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3024 | deemph_reg_value = 128; |
3025 | margin_reg_value = 52; | |
3026 | break; | |
bd60018a | 3027 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3028 | deemph_reg_value = 128; |
3029 | margin_reg_value = 77; | |
3030 | break; | |
bd60018a | 3031 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3032 | deemph_reg_value = 128; |
3033 | margin_reg_value = 102; | |
3034 | break; | |
bd60018a | 3035 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3036 | deemph_reg_value = 128; |
3037 | margin_reg_value = 154; | |
3038 | /* FIXME extra to set for 1200 */ | |
3039 | break; | |
3040 | default: | |
3041 | return 0; | |
3042 | } | |
3043 | break; | |
bd60018a | 3044 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3045 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3046 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3047 | deemph_reg_value = 85; |
3048 | margin_reg_value = 78; | |
3049 | break; | |
bd60018a | 3050 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3051 | deemph_reg_value = 85; |
3052 | margin_reg_value = 116; | |
3053 | break; | |
bd60018a | 3054 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3055 | deemph_reg_value = 85; |
3056 | margin_reg_value = 154; | |
3057 | break; | |
3058 | default: | |
3059 | return 0; | |
3060 | } | |
3061 | break; | |
bd60018a | 3062 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3063 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3064 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3065 | deemph_reg_value = 64; |
3066 | margin_reg_value = 104; | |
3067 | break; | |
bd60018a | 3068 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3069 | deemph_reg_value = 64; |
3070 | margin_reg_value = 154; | |
3071 | break; | |
3072 | default: | |
3073 | return 0; | |
3074 | } | |
3075 | break; | |
bd60018a | 3076 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3077 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3078 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3079 | deemph_reg_value = 43; |
3080 | margin_reg_value = 154; | |
3081 | break; | |
3082 | default: | |
3083 | return 0; | |
3084 | } | |
3085 | break; | |
3086 | default: | |
3087 | return 0; | |
3088 | } | |
3089 | ||
3090 | mutex_lock(&dev_priv->dpio_lock); | |
3091 | ||
3092 | /* Clear calc init */ | |
1966e59e VS |
3093 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3094 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
3095 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3096 | ||
3097 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3098 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
3099 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3100 | |
3101 | /* Program swing deemph */ | |
f72df8db VS |
3102 | for (i = 0; i < 4; i++) { |
3103 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3104 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3105 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3106 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3107 | } | |
e4a1d846 CML |
3108 | |
3109 | /* Program swing margin */ | |
f72df8db VS |
3110 | for (i = 0; i < 4; i++) { |
3111 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3112 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3113 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3114 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3115 | } | |
e4a1d846 CML |
3116 | |
3117 | /* Disable unique transition scale */ | |
f72df8db VS |
3118 | for (i = 0; i < 4; i++) { |
3119 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3120 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3121 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3122 | } | |
e4a1d846 CML |
3123 | |
3124 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3125 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3126 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3127 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3128 | |
3129 | /* | |
3130 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3131 | * for ch1. Might be a typo in the doc. | |
3132 | * For now, for this unique transition scale selection, set bit | |
3133 | * 27 for ch0 and ch1. | |
3134 | */ | |
f72df8db VS |
3135 | for (i = 0; i < 4; i++) { |
3136 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3137 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3138 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3139 | } | |
e4a1d846 | 3140 | |
f72df8db VS |
3141 | for (i = 0; i < 4; i++) { |
3142 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3143 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3144 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3145 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3146 | } | |
e4a1d846 CML |
3147 | } |
3148 | ||
3149 | /* Start swing calculation */ | |
1966e59e VS |
3150 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3151 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3152 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3153 | ||
3154 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3155 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3156 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3157 | |
3158 | /* LRC Bypass */ | |
3159 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3160 | val |= DPIO_LRC_BYPASS; | |
3161 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3162 | ||
3163 | mutex_unlock(&dev_priv->dpio_lock); | |
3164 | ||
3165 | return 0; | |
3166 | } | |
3167 | ||
a4fc5ed6 | 3168 | static void |
0301b3ac JN |
3169 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3170 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3171 | { |
3172 | uint8_t v = 0; | |
3173 | uint8_t p = 0; | |
3174 | int lane; | |
1a2eb460 KP |
3175 | uint8_t voltage_max; |
3176 | uint8_t preemph_max; | |
a4fc5ed6 | 3177 | |
33a34e4e | 3178 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3179 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3180 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3181 | |
3182 | if (this_v > v) | |
3183 | v = this_v; | |
3184 | if (this_p > p) | |
3185 | p = this_p; | |
3186 | } | |
3187 | ||
1a2eb460 | 3188 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3189 | if (v >= voltage_max) |
3190 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3191 | |
1a2eb460 KP |
3192 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3193 | if (p >= preemph_max) | |
3194 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3195 | |
3196 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3197 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3198 | } |
3199 | ||
3200 | static uint32_t | |
f0a3424e | 3201 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3202 | { |
3cf2efb1 | 3203 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3204 | |
3cf2efb1 | 3205 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3206 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3207 | default: |
3208 | signal_levels |= DP_VOLTAGE_0_4; | |
3209 | break; | |
bd60018a | 3210 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3211 | signal_levels |= DP_VOLTAGE_0_6; |
3212 | break; | |
bd60018a | 3213 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3214 | signal_levels |= DP_VOLTAGE_0_8; |
3215 | break; | |
bd60018a | 3216 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3217 | signal_levels |= DP_VOLTAGE_1_2; |
3218 | break; | |
3219 | } | |
3cf2efb1 | 3220 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3221 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3222 | default: |
3223 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3224 | break; | |
bd60018a | 3225 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3226 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3227 | break; | |
bd60018a | 3228 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3229 | signal_levels |= DP_PRE_EMPHASIS_6; |
3230 | break; | |
bd60018a | 3231 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3232 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3233 | break; | |
3234 | } | |
3235 | return signal_levels; | |
3236 | } | |
3237 | ||
e3421a18 ZW |
3238 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3239 | static uint32_t | |
3240 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
3241 | { | |
3c5a62b5 YL |
3242 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3243 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3244 | switch (signal_levels) { | |
bd60018a SJ |
3245 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3246 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3247 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3248 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3249 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3250 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3251 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3252 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3253 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3254 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3255 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3256 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3257 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3258 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3259 | default: |
3c5a62b5 YL |
3260 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3261 | "0x%x\n", signal_levels); | |
3262 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3263 | } |
3264 | } | |
3265 | ||
1a2eb460 KP |
3266 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3267 | static uint32_t | |
3268 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
3269 | { | |
3270 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3271 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3272 | switch (signal_levels) { | |
bd60018a | 3273 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3274 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3275 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3276 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3277 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3278 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3279 | ||
bd60018a | 3280 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3281 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3282 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3283 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3284 | ||
bd60018a | 3285 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3286 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3287 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3288 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3289 | ||
3290 | default: | |
3291 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3292 | "0x%x\n", signal_levels); | |
3293 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3294 | } | |
3295 | } | |
3296 | ||
d6c0d722 PZ |
3297 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3298 | static uint32_t | |
f0a3424e | 3299 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3300 | { |
d6c0d722 PZ |
3301 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3302 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3303 | switch (signal_levels) { | |
bd60018a | 3304 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3305 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3306 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3307 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3308 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3309 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3310 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3311 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3312 | |
bd60018a | 3313 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3314 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3315 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3316 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3317 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3318 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3319 | |
bd60018a | 3320 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3321 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3322 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3323 | return DDI_BUF_TRANS_SELECT(8); |
d6c0d722 PZ |
3324 | default: |
3325 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3326 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3327 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3328 | } |
a4fc5ed6 KP |
3329 | } |
3330 | ||
f0a3424e PZ |
3331 | /* Properly updates "DP" with the correct signal levels. */ |
3332 | static void | |
3333 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3334 | { | |
3335 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3336 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3337 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3338 | uint32_t signal_levels, mask; | |
3339 | uint8_t train_set = intel_dp->train_set[0]; | |
3340 | ||
9576c27f | 3341 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
f0a3424e PZ |
3342 | signal_levels = intel_hsw_signal_levels(train_set); |
3343 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
3344 | } else if (IS_CHERRYVIEW(dev)) { |
3345 | signal_levels = intel_chv_signal_levels(intel_dp); | |
3346 | mask = 0; | |
e2fa6fba P |
3347 | } else if (IS_VALLEYVIEW(dev)) { |
3348 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
3349 | mask = 0; | |
bc7d38a4 | 3350 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
3351 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
3352 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 3353 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
3354 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
3355 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
3356 | } else { | |
3357 | signal_levels = intel_gen4_signal_levels(train_set); | |
3358 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
3359 | } | |
3360 | ||
3361 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3362 | ||
3363 | *DP = (*DP & ~mask) | signal_levels; | |
3364 | } | |
3365 | ||
a4fc5ed6 | 3366 | static bool |
ea5b213a | 3367 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3368 | uint32_t *DP, |
58e10eb9 | 3369 | uint8_t dp_train_pat) |
a4fc5ed6 | 3370 | { |
174edf1f PZ |
3371 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3372 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3373 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3374 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3375 | int ret, len; | |
a4fc5ed6 | 3376 | |
7b13b58a | 3377 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3378 | |
70aff66c | 3379 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3380 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3381 | |
2cdfe6c8 JN |
3382 | buf[0] = dp_train_pat; |
3383 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3384 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3385 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3386 | len = 1; | |
3387 | } else { | |
3388 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3389 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3390 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3391 | } |
a4fc5ed6 | 3392 | |
9d1a1031 JN |
3393 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3394 | buf, len); | |
2cdfe6c8 JN |
3395 | |
3396 | return ret == len; | |
a4fc5ed6 KP |
3397 | } |
3398 | ||
70aff66c JN |
3399 | static bool |
3400 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3401 | uint8_t dp_train_pat) | |
3402 | { | |
953d22e8 | 3403 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3404 | intel_dp_set_signal_levels(intel_dp, DP); |
3405 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3406 | } | |
3407 | ||
3408 | static bool | |
3409 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3410 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3411 | { |
3412 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3413 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3414 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3415 | int ret; | |
3416 | ||
3417 | intel_get_adjust_train(intel_dp, link_status); | |
3418 | intel_dp_set_signal_levels(intel_dp, DP); | |
3419 | ||
3420 | I915_WRITE(intel_dp->output_reg, *DP); | |
3421 | POSTING_READ(intel_dp->output_reg); | |
3422 | ||
9d1a1031 JN |
3423 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3424 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3425 | |
3426 | return ret == intel_dp->lane_count; | |
3427 | } | |
3428 | ||
3ab9c637 ID |
3429 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3430 | { | |
3431 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3432 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3433 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3434 | enum port port = intel_dig_port->port; | |
3435 | uint32_t val; | |
3436 | ||
3437 | if (!HAS_DDI(dev)) | |
3438 | return; | |
3439 | ||
3440 | val = I915_READ(DP_TP_CTL(port)); | |
3441 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3442 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3443 | I915_WRITE(DP_TP_CTL(port), val); | |
3444 | ||
3445 | /* | |
3446 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3447 | * we need to set idle transmission mode is to work around a HW issue | |
3448 | * where we enable the pipe while not in idle link-training mode. | |
3449 | * In this case there is requirement to wait for a minimum number of | |
3450 | * idle patterns to be sent. | |
3451 | */ | |
3452 | if (port == PORT_A) | |
3453 | return; | |
3454 | ||
3455 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3456 | 1)) | |
3457 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3458 | } | |
3459 | ||
33a34e4e | 3460 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3461 | void |
33a34e4e | 3462 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3463 | { |
da63a9f2 | 3464 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3465 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3466 | int i; |
3467 | uint8_t voltage; | |
cdb0e95b | 3468 | int voltage_tries, loop_tries; |
ea5b213a | 3469 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3470 | uint8_t link_config[2]; |
a4fc5ed6 | 3471 | |
affa9354 | 3472 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3473 | intel_ddi_prepare_link_retrain(encoder); |
3474 | ||
3cf2efb1 | 3475 | /* Write the link configuration data */ |
6aba5b6c JN |
3476 | link_config[0] = intel_dp->link_bw; |
3477 | link_config[1] = intel_dp->lane_count; | |
3478 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3479 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3480 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
6aba5b6c JN |
3481 | |
3482 | link_config[0] = 0; | |
3483 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3484 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3485 | |
3486 | DP |= DP_PORT_EN; | |
1a2eb460 | 3487 | |
70aff66c JN |
3488 | /* clock recovery */ |
3489 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3490 | DP_TRAINING_PATTERN_1 | | |
3491 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3492 | DRM_ERROR("failed to enable link training\n"); | |
3493 | return; | |
3494 | } | |
3495 | ||
a4fc5ed6 | 3496 | voltage = 0xff; |
cdb0e95b KP |
3497 | voltage_tries = 0; |
3498 | loop_tries = 0; | |
a4fc5ed6 | 3499 | for (;;) { |
70aff66c | 3500 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3501 | |
a7c9655f | 3502 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3503 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3504 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3505 | break; |
93f62dad | 3506 | } |
a4fc5ed6 | 3507 | |
01916270 | 3508 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3509 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3510 | break; |
3511 | } | |
3512 | ||
3513 | /* Check to see if we've tried the max voltage */ | |
3514 | for (i = 0; i < intel_dp->lane_count; i++) | |
3515 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3516 | break; |
3b4f819d | 3517 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3518 | ++loop_tries; |
3519 | if (loop_tries == 5) { | |
3def84b3 | 3520 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3521 | break; |
3522 | } | |
70aff66c JN |
3523 | intel_dp_reset_link_train(intel_dp, &DP, |
3524 | DP_TRAINING_PATTERN_1 | | |
3525 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3526 | voltage_tries = 0; |
3527 | continue; | |
3528 | } | |
a4fc5ed6 | 3529 | |
3cf2efb1 | 3530 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3531 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3532 | ++voltage_tries; |
b06fbda3 | 3533 | if (voltage_tries == 5) { |
3def84b3 | 3534 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3535 | break; |
3536 | } | |
3537 | } else | |
3538 | voltage_tries = 0; | |
3539 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3540 | |
70aff66c JN |
3541 | /* Update training set as requested by target */ |
3542 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3543 | DRM_ERROR("failed to update link training\n"); | |
3544 | break; | |
3545 | } | |
a4fc5ed6 KP |
3546 | } |
3547 | ||
33a34e4e JB |
3548 | intel_dp->DP = DP; |
3549 | } | |
3550 | ||
c19b0669 | 3551 | void |
33a34e4e JB |
3552 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3553 | { | |
33a34e4e | 3554 | bool channel_eq = false; |
37f80975 | 3555 | int tries, cr_tries; |
33a34e4e | 3556 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3557 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3558 | ||
3559 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3560 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3561 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3562 | |
a4fc5ed6 | 3563 | /* channel equalization */ |
70aff66c | 3564 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3565 | training_pattern | |
70aff66c JN |
3566 | DP_LINK_SCRAMBLING_DISABLE)) { |
3567 | DRM_ERROR("failed to start channel equalization\n"); | |
3568 | return; | |
3569 | } | |
3570 | ||
a4fc5ed6 | 3571 | tries = 0; |
37f80975 | 3572 | cr_tries = 0; |
a4fc5ed6 KP |
3573 | channel_eq = false; |
3574 | for (;;) { | |
70aff66c | 3575 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3576 | |
37f80975 JB |
3577 | if (cr_tries > 5) { |
3578 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3579 | break; |
3580 | } | |
3581 | ||
a7c9655f | 3582 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3583 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3584 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3585 | break; |
70aff66c | 3586 | } |
a4fc5ed6 | 3587 | |
37f80975 | 3588 | /* Make sure clock is still ok */ |
01916270 | 3589 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3590 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3591 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3592 | training_pattern | |
70aff66c | 3593 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3594 | cr_tries++; |
3595 | continue; | |
3596 | } | |
3597 | ||
1ffdff13 | 3598 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3599 | channel_eq = true; |
3600 | break; | |
3601 | } | |
a4fc5ed6 | 3602 | |
37f80975 JB |
3603 | /* Try 5 times, then try clock recovery if that fails */ |
3604 | if (tries > 5) { | |
3605 | intel_dp_link_down(intel_dp); | |
3606 | intel_dp_start_link_train(intel_dp); | |
70aff66c | 3607 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3608 | training_pattern | |
70aff66c | 3609 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3610 | tries = 0; |
3611 | cr_tries++; | |
3612 | continue; | |
3613 | } | |
a4fc5ed6 | 3614 | |
70aff66c JN |
3615 | /* Update training set as requested by target */ |
3616 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3617 | DRM_ERROR("failed to update link training\n"); | |
3618 | break; | |
3619 | } | |
3cf2efb1 | 3620 | ++tries; |
869184a6 | 3621 | } |
3cf2efb1 | 3622 | |
3ab9c637 ID |
3623 | intel_dp_set_idle_link_train(intel_dp); |
3624 | ||
3625 | intel_dp->DP = DP; | |
3626 | ||
d6c0d722 | 3627 | if (channel_eq) |
07f42258 | 3628 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3629 | |
3ab9c637 ID |
3630 | } |
3631 | ||
3632 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3633 | { | |
70aff66c | 3634 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3635 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3636 | } |
3637 | ||
3638 | static void | |
ea5b213a | 3639 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3640 | { |
da63a9f2 | 3641 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3642 | enum port port = intel_dig_port->port; |
da63a9f2 | 3643 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3644 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
3645 | struct intel_crtc *intel_crtc = |
3646 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 3647 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3648 | |
bc76e320 | 3649 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3650 | return; |
3651 | ||
0c33d8d7 | 3652 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3653 | return; |
3654 | ||
28c97730 | 3655 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3656 | |
bc7d38a4 | 3657 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3658 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3659 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3660 | } else { |
aad3d14d VS |
3661 | if (IS_CHERRYVIEW(dev)) |
3662 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3663 | else | |
3664 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3665 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3666 | } |
fe255d00 | 3667 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3668 | |
493a7081 | 3669 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3670 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 3671 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 3672 | |
5bddd17f EA |
3673 | /* Hardware workaround: leaving our transcoder select |
3674 | * set to transcoder B while it's off will prevent the | |
3675 | * corresponding HDMI output on transcoder A. | |
3676 | * | |
3677 | * Combine this with another hardware workaround: | |
3678 | * transcoder select bit can only be cleared while the | |
3679 | * port is enabled. | |
3680 | */ | |
3681 | DP &= ~DP_PIPEB_SELECT; | |
3682 | I915_WRITE(intel_dp->output_reg, DP); | |
3683 | ||
3684 | /* Changes to enable or select take place the vblank | |
3685 | * after being written. | |
3686 | */ | |
ff50afe9 DV |
3687 | if (WARN_ON(crtc == NULL)) { |
3688 | /* We should never try to disable a port without a crtc | |
3689 | * attached. For paranoia keep the code around for a | |
3690 | * bit. */ | |
31acbcc4 CW |
3691 | POSTING_READ(intel_dp->output_reg); |
3692 | msleep(50); | |
3693 | } else | |
ab527efc | 3694 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
3695 | } |
3696 | ||
832afda6 | 3697 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3698 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3699 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3700 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3701 | } |
3702 | ||
26d61aad KP |
3703 | static bool |
3704 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3705 | { |
a031d709 RV |
3706 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3707 | struct drm_device *dev = dig_port->base.base.dev; | |
3708 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3709 | ||
9d1a1031 JN |
3710 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3711 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3712 | return false; /* aux transfer failed */ |
92fd8fd1 | 3713 | |
a8e98153 | 3714 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3715 | |
edb39244 AJ |
3716 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3717 | return false; /* DPCD not present */ | |
3718 | ||
2293bb5c SK |
3719 | /* Check if the panel supports PSR */ |
3720 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3721 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3722 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3723 | intel_dp->psr_dpcd, | |
3724 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3725 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3726 | dev_priv->psr.sink_support = true; | |
50003939 | 3727 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3728 | } |
50003939 JN |
3729 | } |
3730 | ||
06ea66b6 TP |
3731 | /* Training Pattern 3 support */ |
3732 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && | |
3733 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED) { | |
3734 | intel_dp->use_tps3 = true; | |
3735 | DRM_DEBUG_KMS("Displayport TPS3 supported"); | |
3736 | } else | |
3737 | intel_dp->use_tps3 = false; | |
3738 | ||
edb39244 AJ |
3739 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3740 | DP_DWN_STRM_PORT_PRESENT)) | |
3741 | return true; /* native DP sink */ | |
3742 | ||
3743 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3744 | return true; /* no per-port downstream info */ | |
3745 | ||
9d1a1031 JN |
3746 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3747 | intel_dp->downstream_ports, | |
3748 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3749 | return false; /* downstream port status fetch failed */ |
3750 | ||
3751 | return true; | |
92fd8fd1 KP |
3752 | } |
3753 | ||
0d198328 AJ |
3754 | static void |
3755 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3756 | { | |
3757 | u8 buf[3]; | |
3758 | ||
3759 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3760 | return; | |
3761 | ||
24f3e092 | 3762 | intel_edp_panel_vdd_on(intel_dp); |
351cfc34 | 3763 | |
9d1a1031 | 3764 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3765 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3766 | buf[0], buf[1], buf[2]); | |
3767 | ||
9d1a1031 | 3768 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3769 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3770 | buf[0], buf[1], buf[2]); | |
351cfc34 | 3771 | |
1e0560e0 | 3772 | intel_edp_panel_vdd_off(intel_dp, false); |
0d198328 AJ |
3773 | } |
3774 | ||
0e32b39c DA |
3775 | static bool |
3776 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3777 | { | |
3778 | u8 buf[1]; | |
3779 | ||
3780 | if (!intel_dp->can_mst) | |
3781 | return false; | |
3782 | ||
3783 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3784 | return false; | |
3785 | ||
d337a341 | 3786 | intel_edp_panel_vdd_on(intel_dp); |
0e32b39c DA |
3787 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3788 | if (buf[0] & DP_MST_CAP) { | |
3789 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3790 | intel_dp->is_mst = true; | |
3791 | } else { | |
3792 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3793 | intel_dp->is_mst = false; | |
3794 | } | |
3795 | } | |
1e0560e0 | 3796 | intel_edp_panel_vdd_off(intel_dp, false); |
0e32b39c DA |
3797 | |
3798 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3799 | return intel_dp->is_mst; | |
3800 | } | |
3801 | ||
d2e216d0 RV |
3802 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3803 | { | |
3804 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3805 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3806 | struct intel_crtc *intel_crtc = | |
3807 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
3808 | u8 buf[1]; | |
3809 | ||
9d1a1031 | 3810 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0) |
d2e216d0 RV |
3811 | return -EAGAIN; |
3812 | ||
3813 | if (!(buf[0] & DP_TEST_CRC_SUPPORTED)) | |
3814 | return -ENOTTY; | |
3815 | ||
9d1a1031 JN |
3816 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
3817 | DP_TEST_SINK_START) < 0) | |
d2e216d0 RV |
3818 | return -EAGAIN; |
3819 | ||
3820 | /* Wait 2 vblanks to be sure we will have the correct CRC value */ | |
3821 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3822 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3823 | ||
9d1a1031 | 3824 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
d2e216d0 RV |
3825 | return -EAGAIN; |
3826 | ||
9d1a1031 | 3827 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0); |
d2e216d0 RV |
3828 | return 0; |
3829 | } | |
3830 | ||
a60f0e38 JB |
3831 | static bool |
3832 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3833 | { | |
9d1a1031 JN |
3834 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3835 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3836 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3837 | } |
3838 | ||
0e32b39c DA |
3839 | static bool |
3840 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3841 | { | |
3842 | int ret; | |
3843 | ||
3844 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3845 | DP_SINK_COUNT_ESI, | |
3846 | sink_irq_vector, 14); | |
3847 | if (ret != 14) | |
3848 | return false; | |
3849 | ||
3850 | return true; | |
3851 | } | |
3852 | ||
a60f0e38 JB |
3853 | static void |
3854 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3855 | { | |
3856 | /* NAK by default */ | |
9d1a1031 | 3857 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3858 | } |
3859 | ||
0e32b39c DA |
3860 | static int |
3861 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3862 | { | |
3863 | bool bret; | |
3864 | ||
3865 | if (intel_dp->is_mst) { | |
3866 | u8 esi[16] = { 0 }; | |
3867 | int ret = 0; | |
3868 | int retry; | |
3869 | bool handled; | |
3870 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3871 | go_again: | |
3872 | if (bret == true) { | |
3873 | ||
3874 | /* check link status - esi[10] = 0x200c */ | |
3875 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3876 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3877 | intel_dp_start_link_train(intel_dp); | |
3878 | intel_dp_complete_link_train(intel_dp); | |
3879 | intel_dp_stop_link_train(intel_dp); | |
3880 | } | |
3881 | ||
3882 | DRM_DEBUG_KMS("got esi %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3883 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); | |
3884 | ||
3885 | if (handled) { | |
3886 | for (retry = 0; retry < 3; retry++) { | |
3887 | int wret; | |
3888 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3889 | DP_SINK_COUNT_ESI+1, | |
3890 | &esi[1], 3); | |
3891 | if (wret == 3) { | |
3892 | break; | |
3893 | } | |
3894 | } | |
3895 | ||
3896 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3897 | if (bret == true) { | |
3898 | DRM_DEBUG_KMS("got esi2 %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3899 | goto go_again; | |
3900 | } | |
3901 | } else | |
3902 | ret = 0; | |
3903 | ||
3904 | return ret; | |
3905 | } else { | |
3906 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3907 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3908 | intel_dp->is_mst = false; | |
3909 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3910 | /* send a hotplug event */ | |
3911 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3912 | } | |
3913 | } | |
3914 | return -EINVAL; | |
3915 | } | |
3916 | ||
a4fc5ed6 KP |
3917 | /* |
3918 | * According to DP spec | |
3919 | * 5.1.2: | |
3920 | * 1. Read DPCD | |
3921 | * 2. Configure link according to Receiver Capabilities | |
3922 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3923 | * 4. Check link status on receipt of hot-plug interrupt | |
3924 | */ | |
00c09d70 | 3925 | void |
ea5b213a | 3926 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3927 | { |
5b215bcf | 3928 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 3929 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3930 | u8 sink_irq_vector; |
93f62dad | 3931 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3932 | |
5b215bcf DA |
3933 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
3934 | ||
da63a9f2 | 3935 | if (!intel_encoder->connectors_active) |
d2b996ac | 3936 | return; |
59cd09e1 | 3937 | |
da63a9f2 | 3938 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3939 | return; |
3940 | ||
1a125d8a ID |
3941 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
3942 | return; | |
3943 | ||
92fd8fd1 | 3944 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3945 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3946 | return; |
3947 | } | |
3948 | ||
92fd8fd1 | 3949 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3950 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3951 | return; |
3952 | } | |
3953 | ||
a60f0e38 JB |
3954 | /* Try to read the source of the interrupt */ |
3955 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
3956 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
3957 | /* Clear interrupt source */ | |
9d1a1031 JN |
3958 | drm_dp_dpcd_writeb(&intel_dp->aux, |
3959 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3960 | sink_irq_vector); | |
a60f0e38 JB |
3961 | |
3962 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
3963 | intel_dp_handle_test_request(intel_dp); | |
3964 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
3965 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
3966 | } | |
3967 | ||
1ffdff13 | 3968 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 3969 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 3970 | intel_encoder->base.name); |
33a34e4e JB |
3971 | intel_dp_start_link_train(intel_dp); |
3972 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 3973 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 3974 | } |
a4fc5ed6 | 3975 | } |
a4fc5ed6 | 3976 | |
caf9ab24 | 3977 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 3978 | static enum drm_connector_status |
26d61aad | 3979 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 3980 | { |
caf9ab24 | 3981 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
3982 | uint8_t type; |
3983 | ||
3984 | if (!intel_dp_get_dpcd(intel_dp)) | |
3985 | return connector_status_disconnected; | |
3986 | ||
3987 | /* if there's no downstream port, we're done */ | |
3988 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 3989 | return connector_status_connected; |
caf9ab24 AJ |
3990 | |
3991 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
3992 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
3993 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 3994 | uint8_t reg; |
9d1a1031 JN |
3995 | |
3996 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
3997 | ®, 1) < 0) | |
caf9ab24 | 3998 | return connector_status_unknown; |
9d1a1031 | 3999 | |
23235177 AJ |
4000 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4001 | : connector_status_disconnected; | |
caf9ab24 AJ |
4002 | } |
4003 | ||
4004 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4005 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4006 | return connector_status_connected; |
caf9ab24 AJ |
4007 | |
4008 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4009 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4010 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4011 | if (type == DP_DS_PORT_TYPE_VGA || | |
4012 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4013 | return connector_status_unknown; | |
4014 | } else { | |
4015 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4016 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4017 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4018 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4019 | return connector_status_unknown; | |
4020 | } | |
caf9ab24 AJ |
4021 | |
4022 | /* Anything else is out of spec, warn and ignore */ | |
4023 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4024 | return connector_status_disconnected; |
71ba9000 AJ |
4025 | } |
4026 | ||
d410b56d CW |
4027 | static enum drm_connector_status |
4028 | edp_detect(struct intel_dp *intel_dp) | |
4029 | { | |
4030 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4031 | enum drm_connector_status status; | |
4032 | ||
4033 | status = intel_panel_detect(dev); | |
4034 | if (status == connector_status_unknown) | |
4035 | status = connector_status_connected; | |
4036 | ||
4037 | return status; | |
4038 | } | |
4039 | ||
5eb08b69 | 4040 | static enum drm_connector_status |
a9756bb5 | 4041 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4042 | { |
30add22d | 4043 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4044 | struct drm_i915_private *dev_priv = dev->dev_private; |
4045 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4046 | |
1b469639 DL |
4047 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4048 | return connector_status_disconnected; | |
4049 | ||
26d61aad | 4050 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4051 | } |
4052 | ||
2a592bec DA |
4053 | static int g4x_digital_port_connected(struct drm_device *dev, |
4054 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4055 | { |
a4fc5ed6 | 4056 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4057 | uint32_t bit; |
5eb08b69 | 4058 | |
232a6ee9 TP |
4059 | if (IS_VALLEYVIEW(dev)) { |
4060 | switch (intel_dig_port->port) { | |
4061 | case PORT_B: | |
4062 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4063 | break; | |
4064 | case PORT_C: | |
4065 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4066 | break; | |
4067 | case PORT_D: | |
4068 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4069 | break; | |
4070 | default: | |
2a592bec | 4071 | return -EINVAL; |
232a6ee9 TP |
4072 | } |
4073 | } else { | |
4074 | switch (intel_dig_port->port) { | |
4075 | case PORT_B: | |
4076 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4077 | break; | |
4078 | case PORT_C: | |
4079 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4080 | break; | |
4081 | case PORT_D: | |
4082 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4083 | break; | |
4084 | default: | |
2a592bec | 4085 | return -EINVAL; |
232a6ee9 | 4086 | } |
a4fc5ed6 KP |
4087 | } |
4088 | ||
10f76a38 | 4089 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4090 | return 0; |
4091 | return 1; | |
4092 | } | |
4093 | ||
4094 | static enum drm_connector_status | |
4095 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4096 | { | |
4097 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4098 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4099 | int ret; | |
4100 | ||
4101 | /* Can't disconnect eDP, but you can close the lid... */ | |
4102 | if (is_edp(intel_dp)) { | |
4103 | enum drm_connector_status status; | |
4104 | ||
4105 | status = intel_panel_detect(dev); | |
4106 | if (status == connector_status_unknown) | |
4107 | status = connector_status_connected; | |
4108 | return status; | |
4109 | } | |
4110 | ||
4111 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4112 | if (ret == -EINVAL) | |
4113 | return connector_status_unknown; | |
4114 | else if (ret == 0) | |
a4fc5ed6 KP |
4115 | return connector_status_disconnected; |
4116 | ||
26d61aad | 4117 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4118 | } |
4119 | ||
8c241fef | 4120 | static struct edid * |
beb60608 | 4121 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4122 | { |
beb60608 | 4123 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4124 | |
9cd300e0 JN |
4125 | /* use cached edid if we have one */ |
4126 | if (intel_connector->edid) { | |
9cd300e0 JN |
4127 | /* invalid edid */ |
4128 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4129 | return NULL; |
4130 | ||
55e9edeb | 4131 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4132 | } else |
4133 | return drm_get_edid(&intel_connector->base, | |
4134 | &intel_dp->aux.ddc); | |
4135 | } | |
8c241fef | 4136 | |
beb60608 CW |
4137 | static void |
4138 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4139 | { | |
4140 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4141 | struct edid *edid; | |
8c241fef | 4142 | |
beb60608 CW |
4143 | edid = intel_dp_get_edid(intel_dp); |
4144 | intel_connector->detect_edid = edid; | |
4145 | ||
4146 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4147 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4148 | else | |
4149 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4150 | } |
4151 | ||
beb60608 CW |
4152 | static void |
4153 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4154 | { |
beb60608 | 4155 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4156 | |
beb60608 CW |
4157 | kfree(intel_connector->detect_edid); |
4158 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4159 | |
beb60608 CW |
4160 | intel_dp->has_audio = false; |
4161 | } | |
d6f24d0f | 4162 | |
beb60608 CW |
4163 | static enum intel_display_power_domain |
4164 | intel_dp_power_get(struct intel_dp *dp) | |
4165 | { | |
4166 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4167 | enum intel_display_power_domain power_domain; | |
4168 | ||
4169 | power_domain = intel_display_port_power_domain(encoder); | |
4170 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4171 | ||
4172 | return power_domain; | |
4173 | } | |
d6f24d0f | 4174 | |
beb60608 CW |
4175 | static void |
4176 | intel_dp_power_put(struct intel_dp *dp, | |
4177 | enum intel_display_power_domain power_domain) | |
4178 | { | |
4179 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4180 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4181 | } |
4182 | ||
a9756bb5 ZW |
4183 | static enum drm_connector_status |
4184 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4185 | { | |
4186 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4187 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4188 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4189 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4190 | enum drm_connector_status status; |
671dedd2 | 4191 | enum intel_display_power_domain power_domain; |
0e32b39c | 4192 | bool ret; |
a9756bb5 | 4193 | |
164c8598 | 4194 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4195 | connector->base.id, connector->name); |
beb60608 | 4196 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4197 | |
0e32b39c DA |
4198 | if (intel_dp->is_mst) { |
4199 | /* MST devices are disconnected from a monitor POV */ | |
4200 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4201 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4202 | return connector_status_disconnected; |
0e32b39c DA |
4203 | } |
4204 | ||
beb60608 | 4205 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4206 | |
d410b56d CW |
4207 | /* Can't disconnect eDP, but you can close the lid... */ |
4208 | if (is_edp(intel_dp)) | |
4209 | status = edp_detect(intel_dp); | |
4210 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4211 | status = ironlake_dp_detect(intel_dp); |
4212 | else | |
4213 | status = g4x_dp_detect(intel_dp); | |
4214 | if (status != connector_status_connected) | |
c8c8fb33 | 4215 | goto out; |
a9756bb5 | 4216 | |
0d198328 AJ |
4217 | intel_dp_probe_oui(intel_dp); |
4218 | ||
0e32b39c DA |
4219 | ret = intel_dp_probe_mst(intel_dp); |
4220 | if (ret) { | |
4221 | /* if we are in MST mode then this connector | |
4222 | won't appear connected or have anything with EDID on it */ | |
4223 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4224 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4225 | status = connector_status_disconnected; | |
4226 | goto out; | |
4227 | } | |
4228 | ||
beb60608 | 4229 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4230 | |
d63885da PZ |
4231 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4232 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4233 | status = connector_status_connected; |
4234 | ||
4235 | out: | |
beb60608 | 4236 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4237 | return status; |
a4fc5ed6 KP |
4238 | } |
4239 | ||
beb60608 CW |
4240 | static void |
4241 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4242 | { |
df0e9248 | 4243 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4244 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4245 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4246 | |
beb60608 CW |
4247 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4248 | connector->base.id, connector->name); | |
4249 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4250 | |
beb60608 CW |
4251 | if (connector->status != connector_status_connected) |
4252 | return; | |
671dedd2 | 4253 | |
beb60608 CW |
4254 | power_domain = intel_dp_power_get(intel_dp); |
4255 | ||
4256 | intel_dp_set_edid(intel_dp); | |
4257 | ||
4258 | intel_dp_power_put(intel_dp, power_domain); | |
4259 | ||
4260 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4261 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4262 | } | |
4263 | ||
4264 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4265 | { | |
4266 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4267 | struct edid *edid; | |
4268 | ||
4269 | edid = intel_connector->detect_edid; | |
4270 | if (edid) { | |
4271 | int ret = intel_connector_update_modes(connector, edid); | |
4272 | if (ret) | |
4273 | return ret; | |
4274 | } | |
32f9d658 | 4275 | |
f8779fda | 4276 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4277 | if (is_edp(intel_attached_dp(connector)) && |
4278 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4279 | struct drm_display_mode *mode; |
beb60608 CW |
4280 | |
4281 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4282 | intel_connector->panel.fixed_mode); |
f8779fda | 4283 | if (mode) { |
32f9d658 ZW |
4284 | drm_mode_probed_add(connector, mode); |
4285 | return 1; | |
4286 | } | |
4287 | } | |
beb60608 | 4288 | |
32f9d658 | 4289 | return 0; |
a4fc5ed6 KP |
4290 | } |
4291 | ||
1aad7ac0 CW |
4292 | static bool |
4293 | intel_dp_detect_audio(struct drm_connector *connector) | |
4294 | { | |
1aad7ac0 | 4295 | bool has_audio = false; |
beb60608 | 4296 | struct edid *edid; |
1aad7ac0 | 4297 | |
beb60608 CW |
4298 | edid = to_intel_connector(connector)->detect_edid; |
4299 | if (edid) | |
1aad7ac0 | 4300 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4301 | |
1aad7ac0 CW |
4302 | return has_audio; |
4303 | } | |
4304 | ||
f684960e CW |
4305 | static int |
4306 | intel_dp_set_property(struct drm_connector *connector, | |
4307 | struct drm_property *property, | |
4308 | uint64_t val) | |
4309 | { | |
e953fd7b | 4310 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4311 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4312 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4313 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4314 | int ret; |
4315 | ||
662595df | 4316 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4317 | if (ret) |
4318 | return ret; | |
4319 | ||
3f43c48d | 4320 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4321 | int i = val; |
4322 | bool has_audio; | |
4323 | ||
4324 | if (i == intel_dp->force_audio) | |
f684960e CW |
4325 | return 0; |
4326 | ||
1aad7ac0 | 4327 | intel_dp->force_audio = i; |
f684960e | 4328 | |
c3e5f67b | 4329 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4330 | has_audio = intel_dp_detect_audio(connector); |
4331 | else | |
c3e5f67b | 4332 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4333 | |
4334 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4335 | return 0; |
4336 | ||
1aad7ac0 | 4337 | intel_dp->has_audio = has_audio; |
f684960e CW |
4338 | goto done; |
4339 | } | |
4340 | ||
e953fd7b | 4341 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4342 | bool old_auto = intel_dp->color_range_auto; |
4343 | uint32_t old_range = intel_dp->color_range; | |
4344 | ||
55bc60db VS |
4345 | switch (val) { |
4346 | case INTEL_BROADCAST_RGB_AUTO: | |
4347 | intel_dp->color_range_auto = true; | |
4348 | break; | |
4349 | case INTEL_BROADCAST_RGB_FULL: | |
4350 | intel_dp->color_range_auto = false; | |
4351 | intel_dp->color_range = 0; | |
4352 | break; | |
4353 | case INTEL_BROADCAST_RGB_LIMITED: | |
4354 | intel_dp->color_range_auto = false; | |
4355 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4356 | break; | |
4357 | default: | |
4358 | return -EINVAL; | |
4359 | } | |
ae4edb80 DV |
4360 | |
4361 | if (old_auto == intel_dp->color_range_auto && | |
4362 | old_range == intel_dp->color_range) | |
4363 | return 0; | |
4364 | ||
e953fd7b CW |
4365 | goto done; |
4366 | } | |
4367 | ||
53b41837 YN |
4368 | if (is_edp(intel_dp) && |
4369 | property == connector->dev->mode_config.scaling_mode_property) { | |
4370 | if (val == DRM_MODE_SCALE_NONE) { | |
4371 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4372 | return -EINVAL; | |
4373 | } | |
4374 | ||
4375 | if (intel_connector->panel.fitting_mode == val) { | |
4376 | /* the eDP scaling property is not changed */ | |
4377 | return 0; | |
4378 | } | |
4379 | intel_connector->panel.fitting_mode = val; | |
4380 | ||
4381 | goto done; | |
4382 | } | |
4383 | ||
f684960e CW |
4384 | return -EINVAL; |
4385 | ||
4386 | done: | |
c0c36b94 CW |
4387 | if (intel_encoder->base.crtc) |
4388 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4389 | |
4390 | return 0; | |
4391 | } | |
4392 | ||
a4fc5ed6 | 4393 | static void |
73845adf | 4394 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4395 | { |
1d508706 | 4396 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4397 | |
10e972d3 | 4398 | kfree(intel_connector->detect_edid); |
beb60608 | 4399 | |
9cd300e0 JN |
4400 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4401 | kfree(intel_connector->edid); | |
4402 | ||
acd8db10 PZ |
4403 | /* Can't call is_edp() since the encoder may have been destroyed |
4404 | * already. */ | |
4405 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4406 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4407 | |
a4fc5ed6 | 4408 | drm_connector_cleanup(connector); |
55f78c43 | 4409 | kfree(connector); |
a4fc5ed6 KP |
4410 | } |
4411 | ||
00c09d70 | 4412 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4413 | { |
da63a9f2 PZ |
4414 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4415 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4416 | |
4f71d0cb | 4417 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4418 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
24d05927 | 4419 | drm_encoder_cleanup(encoder); |
bd943159 KP |
4420 | if (is_edp(intel_dp)) { |
4421 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4422 | /* |
4423 | * vdd might still be enabled do to the delayed vdd off. | |
4424 | * Make sure vdd is actually turned off here. | |
4425 | */ | |
773538e8 | 4426 | pps_lock(intel_dp); |
4be73780 | 4427 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4428 | pps_unlock(intel_dp); |
4429 | ||
01527b31 CT |
4430 | if (intel_dp->edp_notifier.notifier_call) { |
4431 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4432 | intel_dp->edp_notifier.notifier_call = NULL; | |
4433 | } | |
bd943159 | 4434 | } |
da63a9f2 | 4435 | kfree(intel_dig_port); |
24d05927 DV |
4436 | } |
4437 | ||
07f9cd0b ID |
4438 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4439 | { | |
4440 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4441 | ||
4442 | if (!is_edp(intel_dp)) | |
4443 | return; | |
4444 | ||
951468f3 VS |
4445 | /* |
4446 | * vdd might still be enabled do to the delayed vdd off. | |
4447 | * Make sure vdd is actually turned off here. | |
4448 | */ | |
773538e8 | 4449 | pps_lock(intel_dp); |
07f9cd0b | 4450 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4451 | pps_unlock(intel_dp); |
07f9cd0b ID |
4452 | } |
4453 | ||
6d93c0c4 ID |
4454 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4455 | { | |
4456 | intel_edp_panel_vdd_sanitize(to_intel_encoder(encoder)); | |
4457 | } | |
4458 | ||
a4fc5ed6 | 4459 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4460 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4461 | .detect = intel_dp_detect, |
beb60608 | 4462 | .force = intel_dp_force, |
a4fc5ed6 | 4463 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4464 | .set_property = intel_dp_set_property, |
73845adf | 4465 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
4466 | }; |
4467 | ||
4468 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4469 | .get_modes = intel_dp_get_modes, | |
4470 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4471 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4472 | }; |
4473 | ||
a4fc5ed6 | 4474 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4475 | .reset = intel_dp_encoder_reset, |
24d05927 | 4476 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4477 | }; |
4478 | ||
0e32b39c | 4479 | void |
21d40d37 | 4480 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4481 | { |
0e32b39c | 4482 | return; |
c8110e52 | 4483 | } |
6207937d | 4484 | |
13cf5504 DA |
4485 | bool |
4486 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) | |
4487 | { | |
4488 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4489 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4490 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4491 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 ID |
4492 | enum intel_display_power_domain power_domain; |
4493 | bool ret = true; | |
4494 | ||
0e32b39c DA |
4495 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4496 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4497 | |
26fbb774 VS |
4498 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4499 | port_name(intel_dig_port->port), | |
0e32b39c | 4500 | long_hpd ? "long" : "short"); |
13cf5504 | 4501 | |
1c767b33 ID |
4502 | power_domain = intel_display_port_power_domain(intel_encoder); |
4503 | intel_display_power_get(dev_priv, power_domain); | |
4504 | ||
0e32b39c | 4505 | if (long_hpd) { |
2a592bec DA |
4506 | |
4507 | if (HAS_PCH_SPLIT(dev)) { | |
4508 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4509 | goto mst_fail; | |
4510 | } else { | |
4511 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4512 | goto mst_fail; | |
4513 | } | |
0e32b39c DA |
4514 | |
4515 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4516 | goto mst_fail; | |
4517 | } | |
4518 | ||
4519 | intel_dp_probe_oui(intel_dp); | |
4520 | ||
4521 | if (!intel_dp_probe_mst(intel_dp)) | |
4522 | goto mst_fail; | |
4523 | ||
4524 | } else { | |
4525 | if (intel_dp->is_mst) { | |
1c767b33 | 4526 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4527 | goto mst_fail; |
4528 | } | |
4529 | ||
4530 | if (!intel_dp->is_mst) { | |
4531 | /* | |
4532 | * we'll check the link status via the normal hot plug path later - | |
4533 | * but for short hpds we should check it now | |
4534 | */ | |
5b215bcf | 4535 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4536 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4537 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4538 | } |
4539 | } | |
1c767b33 ID |
4540 | ret = false; |
4541 | goto put_power; | |
0e32b39c DA |
4542 | mst_fail: |
4543 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4544 | if (intel_dp->is_mst) { | |
4545 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4546 | intel_dp->is_mst = false; | |
4547 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4548 | } | |
1c767b33 ID |
4549 | put_power: |
4550 | intel_display_power_put(dev_priv, power_domain); | |
4551 | ||
4552 | return ret; | |
13cf5504 DA |
4553 | } |
4554 | ||
e3421a18 ZW |
4555 | /* Return which DP Port should be selected for Transcoder DP control */ |
4556 | int | |
0206e353 | 4557 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4558 | { |
4559 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4560 | struct intel_encoder *intel_encoder; |
4561 | struct intel_dp *intel_dp; | |
e3421a18 | 4562 | |
fa90ecef PZ |
4563 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4564 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4565 | |
fa90ecef PZ |
4566 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4567 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4568 | return intel_dp->output_reg; |
e3421a18 | 4569 | } |
ea5b213a | 4570 | |
e3421a18 ZW |
4571 | return -1; |
4572 | } | |
4573 | ||
36e83a18 | 4574 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4575 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4576 | { |
4577 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4578 | union child_device_config *p_child; |
36e83a18 | 4579 | int i; |
5d8a7752 VS |
4580 | static const short port_mapping[] = { |
4581 | [PORT_B] = PORT_IDPB, | |
4582 | [PORT_C] = PORT_IDPC, | |
4583 | [PORT_D] = PORT_IDPD, | |
4584 | }; | |
36e83a18 | 4585 | |
3b32a35b VS |
4586 | if (port == PORT_A) |
4587 | return true; | |
4588 | ||
41aa3448 | 4589 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4590 | return false; |
4591 | ||
41aa3448 RV |
4592 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4593 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4594 | |
5d8a7752 | 4595 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4596 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4597 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4598 | return true; |
4599 | } | |
4600 | return false; | |
4601 | } | |
4602 | ||
0e32b39c | 4603 | void |
f684960e CW |
4604 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4605 | { | |
53b41837 YN |
4606 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4607 | ||
3f43c48d | 4608 | intel_attach_force_audio_property(connector); |
e953fd7b | 4609 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4610 | intel_dp->color_range_auto = true; |
53b41837 YN |
4611 | |
4612 | if (is_edp(intel_dp)) { | |
4613 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4614 | drm_object_attach_property( |
4615 | &connector->base, | |
53b41837 | 4616 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4617 | DRM_MODE_SCALE_ASPECT); |
4618 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4619 | } |
f684960e CW |
4620 | } |
4621 | ||
dada1a9f ID |
4622 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4623 | { | |
4624 | intel_dp->last_power_cycle = jiffies; | |
4625 | intel_dp->last_power_on = jiffies; | |
4626 | intel_dp->last_backlight_off = jiffies; | |
4627 | } | |
4628 | ||
67a54566 DV |
4629 | static void |
4630 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
4631 | struct intel_dp *intel_dp, |
4632 | struct edp_power_seq *out) | |
67a54566 DV |
4633 | { |
4634 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4635 | struct edp_power_seq cur, vbt, spec, final; | |
4636 | u32 pp_on, pp_off, pp_div, pp; | |
bf13e81b | 4637 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4638 | |
e39b999a VS |
4639 | lockdep_assert_held(&dev_priv->pps_mutex); |
4640 | ||
453c5420 | 4641 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4642 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4643 | pp_on_reg = PCH_PP_ON_DELAYS; |
4644 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4645 | pp_div_reg = PCH_PP_DIVISOR; | |
4646 | } else { | |
bf13e81b JN |
4647 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4648 | ||
4649 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4650 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4651 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4652 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4653 | } |
67a54566 DV |
4654 | |
4655 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4656 | * the very first thing. */ | |
453c5420 | 4657 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4658 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4659 | |
453c5420 JB |
4660 | pp_on = I915_READ(pp_on_reg); |
4661 | pp_off = I915_READ(pp_off_reg); | |
4662 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4663 | |
4664 | /* Pull timing values out of registers */ | |
4665 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4666 | PANEL_POWER_UP_DELAY_SHIFT; | |
4667 | ||
4668 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4669 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4670 | ||
4671 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4672 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4673 | ||
4674 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4675 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4676 | ||
4677 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4678 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4679 | ||
4680 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4681 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4682 | ||
41aa3448 | 4683 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4684 | |
4685 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4686 | * our hw here, which are all in 100usec. */ | |
4687 | spec.t1_t3 = 210 * 10; | |
4688 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4689 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4690 | spec.t10 = 500 * 10; | |
4691 | /* This one is special and actually in units of 100ms, but zero | |
4692 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4693 | * table multiplies it with 1000 to make it in units of 100usec, | |
4694 | * too. */ | |
4695 | spec.t11_t12 = (510 + 100) * 10; | |
4696 | ||
4697 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4698 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4699 | ||
4700 | /* Use the max of the register settings and vbt. If both are | |
4701 | * unset, fall back to the spec limits. */ | |
4702 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
4703 | spec.field : \ | |
4704 | max(cur.field, vbt.field)) | |
4705 | assign_final(t1_t3); | |
4706 | assign_final(t8); | |
4707 | assign_final(t9); | |
4708 | assign_final(t10); | |
4709 | assign_final(t11_t12); | |
4710 | #undef assign_final | |
4711 | ||
4712 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
4713 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
4714 | intel_dp->backlight_on_delay = get_delay(t8); | |
4715 | intel_dp->backlight_off_delay = get_delay(t9); | |
4716 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4717 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4718 | #undef get_delay | |
4719 | ||
f30d26e4 JN |
4720 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4721 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4722 | intel_dp->panel_power_cycle_delay); | |
4723 | ||
4724 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4725 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
4726 | ||
4727 | if (out) | |
4728 | *out = final; | |
4729 | } | |
4730 | ||
4731 | static void | |
4732 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
4733 | struct intel_dp *intel_dp, | |
4734 | struct edp_power_seq *seq) | |
4735 | { | |
4736 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4737 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4738 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4739 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 4740 | enum port port = dp_to_dig_port(intel_dp)->port; |
453c5420 | 4741 | |
e39b999a | 4742 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
4743 | |
4744 | if (HAS_PCH_SPLIT(dev)) { | |
4745 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4746 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4747 | pp_div_reg = PCH_PP_DIVISOR; | |
4748 | } else { | |
bf13e81b JN |
4749 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4750 | ||
4751 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4752 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4753 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4754 | } |
4755 | ||
b2f19d1a PZ |
4756 | /* |
4757 | * And finally store the new values in the power sequencer. The | |
4758 | * backlight delays are set to 1 because we do manual waits on them. For | |
4759 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4760 | * we'll end up waiting for the backlight off delay twice: once when we | |
4761 | * do the manual sleep, and once when we disable the panel and wait for | |
4762 | * the PP_STATUS bit to become zero. | |
4763 | */ | |
f30d26e4 | 4764 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4765 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4766 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4767 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4768 | /* Compute the divisor for the pp clock, simply match the Bspec |
4769 | * formula. */ | |
453c5420 | 4770 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4771 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4772 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4773 | ||
4774 | /* Haswell doesn't have any port selection bits for the panel | |
4775 | * power sequencer any more. */ | |
bc7d38a4 | 4776 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 4777 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 4778 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 4779 | if (port == PORT_A) |
a24c144c | 4780 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4781 | else |
a24c144c | 4782 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4783 | } |
4784 | ||
453c5420 JB |
4785 | pp_on |= port_sel; |
4786 | ||
4787 | I915_WRITE(pp_on_reg, pp_on); | |
4788 | I915_WRITE(pp_off_reg, pp_off); | |
4789 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4790 | |
67a54566 | 4791 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4792 | I915_READ(pp_on_reg), |
4793 | I915_READ(pp_off_reg), | |
4794 | I915_READ(pp_div_reg)); | |
f684960e CW |
4795 | } |
4796 | ||
439d7ac0 PB |
4797 | void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
4798 | { | |
4799 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4800 | struct intel_encoder *encoder; | |
4801 | struct intel_dp *intel_dp = NULL; | |
4802 | struct intel_crtc_config *config = NULL; | |
4803 | struct intel_crtc *intel_crtc = NULL; | |
4804 | struct intel_connector *intel_connector = dev_priv->drrs.connector; | |
4805 | u32 reg, val; | |
4806 | enum edp_drrs_refresh_rate_type index = DRRS_HIGH_RR; | |
4807 | ||
4808 | if (refresh_rate <= 0) { | |
4809 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4810 | return; | |
4811 | } | |
4812 | ||
4813 | if (intel_connector == NULL) { | |
4814 | DRM_DEBUG_KMS("DRRS supported for eDP only.\n"); | |
4815 | return; | |
4816 | } | |
4817 | ||
1fcc9d1c DV |
4818 | /* |
4819 | * FIXME: This needs proper synchronization with psr state. But really | |
4820 | * hard to tell without seeing the user of this function of this code. | |
4821 | * Check locking and ordering once that lands. | |
4822 | */ | |
439d7ac0 PB |
4823 | if (INTEL_INFO(dev)->gen < 8 && intel_edp_is_psr_enabled(dev)) { |
4824 | DRM_DEBUG_KMS("DRRS is disabled as PSR is enabled\n"); | |
4825 | return; | |
4826 | } | |
4827 | ||
4828 | encoder = intel_attached_encoder(&intel_connector->base); | |
4829 | intel_dp = enc_to_intel_dp(&encoder->base); | |
4830 | intel_crtc = encoder->new_crtc; | |
4831 | ||
4832 | if (!intel_crtc) { | |
4833 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4834 | return; | |
4835 | } | |
4836 | ||
4837 | config = &intel_crtc->config; | |
4838 | ||
4839 | if (intel_dp->drrs_state.type < SEAMLESS_DRRS_SUPPORT) { | |
4840 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); | |
4841 | return; | |
4842 | } | |
4843 | ||
4844 | if (intel_connector->panel.downclock_mode->vrefresh == refresh_rate) | |
4845 | index = DRRS_LOW_RR; | |
4846 | ||
4847 | if (index == intel_dp->drrs_state.refresh_rate_type) { | |
4848 | DRM_DEBUG_KMS( | |
4849 | "DRRS requested for previously set RR...ignoring\n"); | |
4850 | return; | |
4851 | } | |
4852 | ||
4853 | if (!intel_crtc->active) { | |
4854 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4855 | return; | |
4856 | } | |
4857 | ||
4858 | if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) { | |
4859 | reg = PIPECONF(intel_crtc->config.cpu_transcoder); | |
4860 | val = I915_READ(reg); | |
4861 | if (index > DRRS_HIGH_RR) { | |
4862 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
f769cd24 | 4863 | intel_dp_set_m_n(intel_crtc); |
439d7ac0 PB |
4864 | } else { |
4865 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
4866 | } | |
4867 | I915_WRITE(reg, val); | |
4868 | } | |
4869 | ||
4870 | /* | |
4871 | * mutex taken to ensure that there is no race between differnt | |
4872 | * drrs calls trying to update refresh rate. This scenario may occur | |
4873 | * in future when idleness detection based DRRS in kernel and | |
4874 | * possible calls from user space to set differnt RR are made. | |
4875 | */ | |
4876 | ||
4877 | mutex_lock(&intel_dp->drrs_state.mutex); | |
4878 | ||
4879 | intel_dp->drrs_state.refresh_rate_type = index; | |
4880 | ||
4881 | mutex_unlock(&intel_dp->drrs_state.mutex); | |
4882 | ||
4883 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
4884 | } | |
4885 | ||
4f9db5b5 PB |
4886 | static struct drm_display_mode * |
4887 | intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, | |
4888 | struct intel_connector *intel_connector, | |
4889 | struct drm_display_mode *fixed_mode) | |
4890 | { | |
4891 | struct drm_connector *connector = &intel_connector->base; | |
4892 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4893 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4894 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4895 | struct drm_display_mode *downclock_mode = NULL; | |
4896 | ||
4897 | if (INTEL_INFO(dev)->gen <= 6) { | |
4898 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
4899 | return NULL; | |
4900 | } | |
4901 | ||
4902 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 4903 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
4904 | return NULL; |
4905 | } | |
4906 | ||
4907 | downclock_mode = intel_find_panel_downclock | |
4908 | (dev, fixed_mode, connector); | |
4909 | ||
4910 | if (!downclock_mode) { | |
4079b8d1 | 4911 | DRM_DEBUG_KMS("DRRS not supported\n"); |
4f9db5b5 PB |
4912 | return NULL; |
4913 | } | |
4914 | ||
439d7ac0 PB |
4915 | dev_priv->drrs.connector = intel_connector; |
4916 | ||
4917 | mutex_init(&intel_dp->drrs_state.mutex); | |
4918 | ||
4f9db5b5 PB |
4919 | intel_dp->drrs_state.type = dev_priv->vbt.drrs_type; |
4920 | ||
4921 | intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; | |
4079b8d1 | 4922 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
4923 | return downclock_mode; |
4924 | } | |
4925 | ||
aba86890 ID |
4926 | void intel_edp_panel_vdd_sanitize(struct intel_encoder *intel_encoder) |
4927 | { | |
4928 | struct drm_device *dev = intel_encoder->base.dev; | |
4929 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4930 | struct intel_dp *intel_dp; | |
4931 | enum intel_display_power_domain power_domain; | |
4932 | ||
4933 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4934 | return; | |
4935 | ||
4936 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
773538e8 VS |
4937 | |
4938 | pps_lock(intel_dp); | |
4939 | ||
aba86890 | 4940 | if (!edp_have_panel_vdd(intel_dp)) |
e39b999a | 4941 | goto out; |
aba86890 ID |
4942 | /* |
4943 | * The VDD bit needs a power domain reference, so if the bit is | |
4944 | * already enabled when we boot or resume, grab this reference and | |
4945 | * schedule a vdd off, so we don't hold on to the reference | |
4946 | * indefinitely. | |
4947 | */ | |
4948 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4949 | power_domain = intel_display_port_power_domain(intel_encoder); | |
4950 | intel_display_power_get(dev_priv, power_domain); | |
4951 | ||
4952 | edp_panel_vdd_schedule_off(intel_dp); | |
e39b999a | 4953 | out: |
773538e8 | 4954 | pps_unlock(intel_dp); |
aba86890 ID |
4955 | } |
4956 | ||
ed92f0b2 | 4957 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
0095e6dc PZ |
4958 | struct intel_connector *intel_connector, |
4959 | struct edp_power_seq *power_seq) | |
ed92f0b2 PZ |
4960 | { |
4961 | struct drm_connector *connector = &intel_connector->base; | |
4962 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
4963 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4964 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
4965 | struct drm_i915_private *dev_priv = dev->dev_private; |
4966 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 4967 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
4968 | bool has_dpcd; |
4969 | struct drm_display_mode *scan; | |
4970 | struct edid *edid; | |
4971 | ||
4f9db5b5 PB |
4972 | intel_dp->drrs_state.type = DRRS_NOT_SUPPORTED; |
4973 | ||
ed92f0b2 PZ |
4974 | if (!is_edp(intel_dp)) |
4975 | return true; | |
4976 | ||
aba86890 | 4977 | intel_edp_panel_vdd_sanitize(intel_encoder); |
63635217 | 4978 | |
ed92f0b2 | 4979 | /* Cache DPCD and EDID for edp. */ |
24f3e092 | 4980 | intel_edp_panel_vdd_on(intel_dp); |
ed92f0b2 | 4981 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
1e0560e0 | 4982 | intel_edp_panel_vdd_off(intel_dp, false); |
ed92f0b2 PZ |
4983 | |
4984 | if (has_dpcd) { | |
4985 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
4986 | dev_priv->no_aux_handshake = | |
4987 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
4988 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
4989 | } else { | |
4990 | /* if this fails, presume the device is a ghost */ | |
4991 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
4992 | return false; |
4993 | } | |
4994 | ||
4995 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 4996 | pps_lock(intel_dp); |
0095e6dc | 4997 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, power_seq); |
773538e8 | 4998 | pps_unlock(intel_dp); |
ed92f0b2 | 4999 | |
060c8778 | 5000 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5001 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5002 | if (edid) { |
5003 | if (drm_add_edid_modes(connector, edid)) { | |
5004 | drm_mode_connector_update_edid_property(connector, | |
5005 | edid); | |
5006 | drm_edid_to_eld(connector, edid); | |
5007 | } else { | |
5008 | kfree(edid); | |
5009 | edid = ERR_PTR(-EINVAL); | |
5010 | } | |
5011 | } else { | |
5012 | edid = ERR_PTR(-ENOENT); | |
5013 | } | |
5014 | intel_connector->edid = edid; | |
5015 | ||
5016 | /* prefer fixed mode from EDID if available */ | |
5017 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5018 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5019 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 PB |
5020 | downclock_mode = intel_dp_drrs_init( |
5021 | intel_dig_port, | |
5022 | intel_connector, fixed_mode); | |
ed92f0b2 PZ |
5023 | break; |
5024 | } | |
5025 | } | |
5026 | ||
5027 | /* fallback to VBT if available for eDP */ | |
5028 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5029 | fixed_mode = drm_mode_duplicate(dev, | |
5030 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5031 | if (fixed_mode) | |
5032 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5033 | } | |
060c8778 | 5034 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5035 | |
01527b31 CT |
5036 | if (IS_VALLEYVIEW(dev)) { |
5037 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5038 | register_reboot_notifier(&intel_dp->edp_notifier); | |
5039 | } | |
5040 | ||
4f9db5b5 | 5041 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5042 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
ed92f0b2 PZ |
5043 | intel_panel_setup_backlight(connector); |
5044 | ||
5045 | return true; | |
5046 | } | |
5047 | ||
16c25533 | 5048 | bool |
f0fec3f2 PZ |
5049 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5050 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5051 | { |
f0fec3f2 PZ |
5052 | struct drm_connector *connector = &intel_connector->base; |
5053 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5054 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5055 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5056 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5057 | enum port port = intel_dig_port->port; |
0095e6dc | 5058 | struct edp_power_seq power_seq = { 0 }; |
0b99836f | 5059 | int type; |
a4fc5ed6 | 5060 | |
a4a5d2f8 VS |
5061 | intel_dp->pps_pipe = INVALID_PIPE; |
5062 | ||
ec5b01dd DL |
5063 | /* intel_dp vfuncs */ |
5064 | if (IS_VALLEYVIEW(dev)) | |
5065 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; | |
5066 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5067 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5068 | else if (HAS_PCH_SPLIT(dev)) | |
5069 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5070 | else | |
5071 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5072 | ||
153b1100 DL |
5073 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; |
5074 | ||
0767935e DV |
5075 | /* Preserve the current hw state. */ |
5076 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5077 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5078 | |
3b32a35b | 5079 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5080 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5081 | else |
5082 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5083 | |
f7d24902 ID |
5084 | /* |
5085 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5086 | * for DP the encoder type can be set by the caller to | |
5087 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5088 | */ | |
5089 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5090 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5091 | ||
e7281eab ID |
5092 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5093 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5094 | port_name(port)); | |
5095 | ||
b329530c | 5096 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5097 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5098 | ||
a4fc5ed6 KP |
5099 | connector->interlace_allowed = true; |
5100 | connector->doublescan_allowed = 0; | |
5101 | ||
f0fec3f2 | 5102 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5103 | edp_panel_vdd_work); |
a4fc5ed6 | 5104 | |
df0e9248 | 5105 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5106 | drm_connector_register(connector); |
a4fc5ed6 | 5107 | |
affa9354 | 5108 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5109 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5110 | else | |
5111 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5112 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5113 | |
0b99836f | 5114 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5115 | switch (port) { |
5116 | case PORT_A: | |
1d843f9d | 5117 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5118 | break; |
5119 | case PORT_B: | |
1d843f9d | 5120 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5121 | break; |
5122 | case PORT_C: | |
1d843f9d | 5123 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5124 | break; |
5125 | case PORT_D: | |
1d843f9d | 5126 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5127 | break; |
5128 | default: | |
ad1c0b19 | 5129 | BUG(); |
5eb08b69 ZW |
5130 | } |
5131 | ||
dada1a9f | 5132 | if (is_edp(intel_dp)) { |
773538e8 | 5133 | pps_lock(intel_dp); |
a4a5d2f8 VS |
5134 | if (IS_VALLEYVIEW(dev)) { |
5135 | vlv_initial_power_sequencer_setup(intel_dp); | |
5136 | } else { | |
5137 | intel_dp_init_panel_power_timestamps(intel_dp); | |
5138 | intel_dp_init_panel_power_sequencer(dev, intel_dp, | |
5139 | &power_seq); | |
5140 | } | |
773538e8 | 5141 | pps_unlock(intel_dp); |
dada1a9f | 5142 | } |
0095e6dc | 5143 | |
9d1a1031 | 5144 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5145 | |
0e32b39c DA |
5146 | /* init MST on ports that can support it */ |
5147 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
5148 | if (port == PORT_B || port == PORT_C || port == PORT_D) { | |
a4a5d2f8 VS |
5149 | intel_dp_mst_encoder_init(intel_dig_port, |
5150 | intel_connector->base.base.id); | |
0e32b39c DA |
5151 | } |
5152 | } | |
5153 | ||
0095e6dc | 5154 | if (!intel_edp_init_connector(intel_dp, intel_connector, &power_seq)) { |
4f71d0cb | 5155 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5156 | if (is_edp(intel_dp)) { |
5157 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5158 | /* |
5159 | * vdd might still be enabled do to the delayed vdd off. | |
5160 | * Make sure vdd is actually turned off here. | |
5161 | */ | |
773538e8 | 5162 | pps_lock(intel_dp); |
4be73780 | 5163 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5164 | pps_unlock(intel_dp); |
15b1d171 | 5165 | } |
34ea3d38 | 5166 | drm_connector_unregister(connector); |
b2f246a8 | 5167 | drm_connector_cleanup(connector); |
16c25533 | 5168 | return false; |
b2f246a8 | 5169 | } |
32f9d658 | 5170 | |
f684960e CW |
5171 | intel_dp_add_properties(intel_dp, connector); |
5172 | ||
a4fc5ed6 KP |
5173 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5174 | * 0xd. Failure to do so will result in spurious interrupts being | |
5175 | * generated on the port when a cable is not attached. | |
5176 | */ | |
5177 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5178 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5179 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5180 | } | |
16c25533 PZ |
5181 | |
5182 | return true; | |
a4fc5ed6 | 5183 | } |
f0fec3f2 PZ |
5184 | |
5185 | void | |
5186 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5187 | { | |
13cf5504 | 5188 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5189 | struct intel_digital_port *intel_dig_port; |
5190 | struct intel_encoder *intel_encoder; | |
5191 | struct drm_encoder *encoder; | |
5192 | struct intel_connector *intel_connector; | |
5193 | ||
b14c5679 | 5194 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5195 | if (!intel_dig_port) |
5196 | return; | |
5197 | ||
b14c5679 | 5198 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
5199 | if (!intel_connector) { |
5200 | kfree(intel_dig_port); | |
5201 | return; | |
5202 | } | |
5203 | ||
5204 | intel_encoder = &intel_dig_port->base; | |
5205 | encoder = &intel_encoder->base; | |
5206 | ||
5207 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5208 | DRM_MODE_ENCODER_TMDS); | |
5209 | ||
5bfe2ac0 | 5210 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5211 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5212 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5213 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5214 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5215 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5216 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5217 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5218 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5219 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5220 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5221 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5222 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5223 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5224 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5225 | } else { |
ecff4f3b JN |
5226 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5227 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5228 | if (INTEL_INFO(dev)->gen >= 5) |
5229 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5230 | } |
f0fec3f2 | 5231 | |
174edf1f | 5232 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5233 | intel_dig_port->dp.output_reg = output_reg; |
5234 | ||
00c09d70 | 5235 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5236 | if (IS_CHERRYVIEW(dev)) { |
5237 | if (port == PORT_D) | |
5238 | intel_encoder->crtc_mask = 1 << 2; | |
5239 | else | |
5240 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5241 | } else { | |
5242 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5243 | } | |
bc079e8b | 5244 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5245 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5246 | ||
13cf5504 DA |
5247 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5248 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5249 | ||
15b1d171 PZ |
5250 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5251 | drm_encoder_cleanup(encoder); | |
5252 | kfree(intel_dig_port); | |
b2f246a8 | 5253 | kfree(intel_connector); |
15b1d171 | 5254 | } |
f0fec3f2 | 5255 | } |
0e32b39c DA |
5256 | |
5257 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5258 | { | |
5259 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5260 | int i; | |
5261 | ||
5262 | /* disable MST */ | |
5263 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5264 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5265 | if (!intel_dig_port) | |
5266 | continue; | |
5267 | ||
5268 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5269 | if (!intel_dig_port->dp.can_mst) | |
5270 | continue; | |
5271 | if (intel_dig_port->dp.is_mst) | |
5272 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5273 | } | |
5274 | } | |
5275 | } | |
5276 | ||
5277 | void intel_dp_mst_resume(struct drm_device *dev) | |
5278 | { | |
5279 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5280 | int i; | |
5281 | ||
5282 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5283 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5284 | if (!intel_dig_port) | |
5285 | continue; | |
5286 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5287 | int ret; | |
5288 | ||
5289 | if (!intel_dig_port->dp.can_mst) | |
5290 | continue; | |
5291 | ||
5292 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5293 | if (ret != 0) { | |
5294 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5295 | } | |
5296 | } | |
5297 | } | |
5298 | } |