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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); |
093e3f13 | 116 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a4fc5ed6 | 117 | |
0e32b39c | 118 | int |
ea5b213a | 119 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 120 | { |
7183dc29 | 121 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
06ea66b6 | 122 | struct drm_device *dev = intel_dp->attached_connector->base.dev; |
a4fc5ed6 KP |
123 | |
124 | switch (max_link_bw) { | |
125 | case DP_LINK_BW_1_62: | |
126 | case DP_LINK_BW_2_7: | |
127 | break; | |
d4eead50 | 128 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
9bbfd20a PZ |
129 | if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || |
130 | INTEL_INFO(dev)->gen >= 8) && | |
06ea66b6 TP |
131 | intel_dp->dpcd[DP_DPCD_REV] >= 0x12) |
132 | max_link_bw = DP_LINK_BW_5_4; | |
133 | else | |
134 | max_link_bw = DP_LINK_BW_2_7; | |
d4eead50 | 135 | break; |
a4fc5ed6 | 136 | default: |
d4eead50 ID |
137 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
138 | max_link_bw); | |
a4fc5ed6 KP |
139 | max_link_bw = DP_LINK_BW_1_62; |
140 | break; | |
141 | } | |
142 | return max_link_bw; | |
143 | } | |
144 | ||
eeb6324d PZ |
145 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
146 | { | |
147 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
148 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
149 | u8 source_max, sink_max; | |
150 | ||
151 | source_max = 4; | |
152 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
153 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
154 | source_max = 2; | |
155 | ||
156 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
157 | ||
158 | return min(source_max, sink_max); | |
159 | } | |
160 | ||
cd9dde44 AJ |
161 | /* |
162 | * The units on the numbers in the next two are... bizarre. Examples will | |
163 | * make it clearer; this one parallels an example in the eDP spec. | |
164 | * | |
165 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
166 | * | |
167 | * 270000 * 1 * 8 / 10 == 216000 | |
168 | * | |
169 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
170 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
171 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
172 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
173 | * | |
174 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
175 | * get the result in decakilobits instead of kilobits. | |
176 | */ | |
177 | ||
a4fc5ed6 | 178 | static int |
c898261c | 179 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 180 | { |
cd9dde44 | 181 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
182 | } |
183 | ||
fe27d53e DA |
184 | static int |
185 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
186 | { | |
187 | return (max_link_clock * max_lanes * 8) / 10; | |
188 | } | |
189 | ||
c19de8eb | 190 | static enum drm_mode_status |
a4fc5ed6 KP |
191 | intel_dp_mode_valid(struct drm_connector *connector, |
192 | struct drm_display_mode *mode) | |
193 | { | |
df0e9248 | 194 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
195 | struct intel_connector *intel_connector = to_intel_connector(connector); |
196 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
197 | int target_clock = mode->clock; |
198 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 199 | |
dd06f90e JN |
200 | if (is_edp(intel_dp) && fixed_mode) { |
201 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
202 | return MODE_PANEL; |
203 | ||
dd06f90e | 204 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 205 | return MODE_PANEL; |
03afc4a2 DV |
206 | |
207 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
208 | } |
209 | ||
36008365 | 210 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
eeb6324d | 211 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
212 | |
213 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
214 | mode_rate = intel_dp_link_required(target_clock, 18); | |
215 | ||
216 | if (mode_rate > max_rate) | |
c4867936 | 217 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
218 | |
219 | if (mode->clock < 10000) | |
220 | return MODE_CLOCK_LOW; | |
221 | ||
0af78a2b DV |
222 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
223 | return MODE_H_ILLEGAL; | |
224 | ||
a4fc5ed6 KP |
225 | return MODE_OK; |
226 | } | |
227 | ||
228 | static uint32_t | |
5ca476f8 | 229 | pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
230 | { |
231 | int i; | |
232 | uint32_t v = 0; | |
233 | ||
234 | if (src_bytes > 4) | |
235 | src_bytes = 4; | |
236 | for (i = 0; i < src_bytes; i++) | |
237 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
238 | return v; | |
239 | } | |
240 | ||
241 | static void | |
242 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
243 | { | |
244 | int i; | |
245 | if (dst_bytes > 4) | |
246 | dst_bytes = 4; | |
247 | for (i = 0; i < dst_bytes; i++) | |
248 | dst[i] = src >> ((3-i) * 8); | |
249 | } | |
250 | ||
fb0f8fbf KP |
251 | /* hrawclock is 1/4 the FSB frequency */ |
252 | static int | |
253 | intel_hrawclk(struct drm_device *dev) | |
254 | { | |
255 | struct drm_i915_private *dev_priv = dev->dev_private; | |
256 | uint32_t clkcfg; | |
257 | ||
9473c8f4 VP |
258 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
259 | if (IS_VALLEYVIEW(dev)) | |
260 | return 200; | |
261 | ||
fb0f8fbf KP |
262 | clkcfg = I915_READ(CLKCFG); |
263 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
264 | case CLKCFG_FSB_400: | |
265 | return 100; | |
266 | case CLKCFG_FSB_533: | |
267 | return 133; | |
268 | case CLKCFG_FSB_667: | |
269 | return 166; | |
270 | case CLKCFG_FSB_800: | |
271 | return 200; | |
272 | case CLKCFG_FSB_1067: | |
273 | return 266; | |
274 | case CLKCFG_FSB_1333: | |
275 | return 333; | |
276 | /* these two are just a guess; one of them might be right */ | |
277 | case CLKCFG_FSB_1600: | |
278 | case CLKCFG_FSB_1600_ALT: | |
279 | return 400; | |
280 | default: | |
281 | return 133; | |
282 | } | |
283 | } | |
284 | ||
bf13e81b JN |
285 | static void |
286 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 287 | struct intel_dp *intel_dp); |
bf13e81b JN |
288 | static void |
289 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 290 | struct intel_dp *intel_dp); |
bf13e81b | 291 | |
773538e8 VS |
292 | static void pps_lock(struct intel_dp *intel_dp) |
293 | { | |
294 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
295 | struct intel_encoder *encoder = &intel_dig_port->base; | |
296 | struct drm_device *dev = encoder->base.dev; | |
297 | struct drm_i915_private *dev_priv = dev->dev_private; | |
298 | enum intel_display_power_domain power_domain; | |
299 | ||
300 | /* | |
301 | * See vlv_power_sequencer_reset() why we need | |
302 | * a power domain reference here. | |
303 | */ | |
304 | power_domain = intel_display_port_power_domain(encoder); | |
305 | intel_display_power_get(dev_priv, power_domain); | |
306 | ||
307 | mutex_lock(&dev_priv->pps_mutex); | |
308 | } | |
309 | ||
310 | static void pps_unlock(struct intel_dp *intel_dp) | |
311 | { | |
312 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
313 | struct intel_encoder *encoder = &intel_dig_port->base; | |
314 | struct drm_device *dev = encoder->base.dev; | |
315 | struct drm_i915_private *dev_priv = dev->dev_private; | |
316 | enum intel_display_power_domain power_domain; | |
317 | ||
318 | mutex_unlock(&dev_priv->pps_mutex); | |
319 | ||
320 | power_domain = intel_display_port_power_domain(encoder); | |
321 | intel_display_power_put(dev_priv, power_domain); | |
322 | } | |
323 | ||
bf13e81b JN |
324 | static enum pipe |
325 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
326 | { | |
327 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
328 | struct drm_device *dev = intel_dig_port->base.base.dev; |
329 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
330 | struct intel_encoder *encoder; |
331 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
bf13e81b | 332 | |
e39b999a | 333 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 334 | |
a4a5d2f8 VS |
335 | if (intel_dp->pps_pipe != INVALID_PIPE) |
336 | return intel_dp->pps_pipe; | |
337 | ||
338 | /* | |
339 | * We don't have power sequencer currently. | |
340 | * Pick one that's not used by other ports. | |
341 | */ | |
342 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
343 | base.head) { | |
344 | struct intel_dp *tmp; | |
345 | ||
346 | if (encoder->type != INTEL_OUTPUT_EDP) | |
347 | continue; | |
348 | ||
349 | tmp = enc_to_intel_dp(&encoder->base); | |
350 | ||
351 | if (tmp->pps_pipe != INVALID_PIPE) | |
352 | pipes &= ~(1 << tmp->pps_pipe); | |
353 | } | |
354 | ||
355 | /* | |
356 | * Didn't find one. This should not happen since there | |
357 | * are two power sequencers and up to two eDP ports. | |
358 | */ | |
359 | if (WARN_ON(pipes == 0)) | |
360 | return PIPE_A; | |
361 | ||
362 | intel_dp->pps_pipe = ffs(pipes) - 1; | |
363 | ||
364 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
365 | pipe_name(intel_dp->pps_pipe), | |
366 | port_name(intel_dig_port->port)); | |
367 | ||
368 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
369 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
370 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
371 | |
372 | return intel_dp->pps_pipe; | |
373 | } | |
374 | ||
6491ab27 VS |
375 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
376 | enum pipe pipe); | |
377 | ||
378 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
379 | enum pipe pipe) | |
380 | { | |
381 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
382 | } | |
383 | ||
384 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
385 | enum pipe pipe) | |
386 | { | |
387 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
388 | } | |
389 | ||
390 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
391 | enum pipe pipe) | |
392 | { | |
393 | return true; | |
394 | } | |
bf13e81b | 395 | |
a4a5d2f8 | 396 | static enum pipe |
6491ab27 VS |
397 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
398 | enum port port, | |
399 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
400 | { |
401 | enum pipe pipe; | |
bf13e81b | 402 | |
bf13e81b JN |
403 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
404 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
405 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
406 | |
407 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
408 | continue; | |
409 | ||
6491ab27 VS |
410 | if (!pipe_check(dev_priv, pipe)) |
411 | continue; | |
412 | ||
a4a5d2f8 | 413 | return pipe; |
bf13e81b JN |
414 | } |
415 | ||
a4a5d2f8 VS |
416 | return INVALID_PIPE; |
417 | } | |
418 | ||
419 | static void | |
420 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
421 | { | |
422 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
423 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
424 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
425 | enum port port = intel_dig_port->port; |
426 | ||
427 | lockdep_assert_held(&dev_priv->pps_mutex); | |
428 | ||
429 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
430 | /* first pick one where the panel is on */ |
431 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
432 | vlv_pipe_has_pp_on); | |
433 | /* didn't find one? pick one where vdd is on */ | |
434 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
435 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
436 | vlv_pipe_has_vdd_on); | |
437 | /* didn't find one? pick one with just the correct port */ | |
438 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
439 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
440 | vlv_pipe_any); | |
a4a5d2f8 VS |
441 | |
442 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
443 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
444 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
445 | port_name(port)); | |
446 | return; | |
bf13e81b JN |
447 | } |
448 | ||
a4a5d2f8 VS |
449 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
450 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
451 | ||
36b5f425 VS |
452 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
453 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
454 | } |
455 | ||
773538e8 VS |
456 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
457 | { | |
458 | struct drm_device *dev = dev_priv->dev; | |
459 | struct intel_encoder *encoder; | |
460 | ||
461 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
462 | return; | |
463 | ||
464 | /* | |
465 | * We can't grab pps_mutex here due to deadlock with power_domain | |
466 | * mutex when power_domain functions are called while holding pps_mutex. | |
467 | * That also means that in order to use pps_pipe the code needs to | |
468 | * hold both a power domain reference and pps_mutex, and the power domain | |
469 | * reference get/put must be done while _not_ holding pps_mutex. | |
470 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
471 | * should use them always. | |
472 | */ | |
473 | ||
474 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
475 | struct intel_dp *intel_dp; | |
476 | ||
477 | if (encoder->type != INTEL_OUTPUT_EDP) | |
478 | continue; | |
479 | ||
480 | intel_dp = enc_to_intel_dp(&encoder->base); | |
481 | intel_dp->pps_pipe = INVALID_PIPE; | |
482 | } | |
bf13e81b JN |
483 | } |
484 | ||
485 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
486 | { | |
487 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
488 | ||
489 | if (HAS_PCH_SPLIT(dev)) | |
490 | return PCH_PP_CONTROL; | |
491 | else | |
492 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
493 | } | |
494 | ||
495 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
496 | { | |
497 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
498 | ||
499 | if (HAS_PCH_SPLIT(dev)) | |
500 | return PCH_PP_STATUS; | |
501 | else | |
502 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
503 | } | |
504 | ||
01527b31 CT |
505 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
506 | This function only applicable when panel PM state is not to be tracked */ | |
507 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
508 | void *unused) | |
509 | { | |
510 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
511 | edp_notifier); | |
512 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
513 | struct drm_i915_private *dev_priv = dev->dev_private; | |
514 | u32 pp_div; | |
515 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
516 | |
517 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
518 | return 0; | |
519 | ||
773538e8 | 520 | pps_lock(intel_dp); |
e39b999a | 521 | |
01527b31 | 522 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
523 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
524 | ||
01527b31 CT |
525 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
526 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
527 | pp_div = I915_READ(pp_div_reg); | |
528 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
529 | ||
530 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
531 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
532 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
533 | msleep(intel_dp->panel_power_cycle_delay); | |
534 | } | |
535 | ||
773538e8 | 536 | pps_unlock(intel_dp); |
e39b999a | 537 | |
01527b31 CT |
538 | return 0; |
539 | } | |
540 | ||
4be73780 | 541 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 542 | { |
30add22d | 543 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
544 | struct drm_i915_private *dev_priv = dev->dev_private; |
545 | ||
e39b999a VS |
546 | lockdep_assert_held(&dev_priv->pps_mutex); |
547 | ||
bf13e81b | 548 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
549 | } |
550 | ||
4be73780 | 551 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 552 | { |
30add22d | 553 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
554 | struct drm_i915_private *dev_priv = dev->dev_private; |
555 | ||
e39b999a VS |
556 | lockdep_assert_held(&dev_priv->pps_mutex); |
557 | ||
773538e8 | 558 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
559 | } |
560 | ||
9b984dae KP |
561 | static void |
562 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
563 | { | |
30add22d | 564 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 565 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 566 | |
9b984dae KP |
567 | if (!is_edp(intel_dp)) |
568 | return; | |
453c5420 | 569 | |
4be73780 | 570 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
571 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
572 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
573 | I915_READ(_pp_stat_reg(intel_dp)), |
574 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
575 | } |
576 | } | |
577 | ||
9ee32fea DV |
578 | static uint32_t |
579 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
580 | { | |
581 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
582 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
583 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 584 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
585 | uint32_t status; |
586 | bool done; | |
587 | ||
ef04f00d | 588 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 589 | if (has_aux_irq) |
b18ac466 | 590 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 591 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
592 | else |
593 | done = wait_for_atomic(C, 10) == 0; | |
594 | if (!done) | |
595 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
596 | has_aux_irq); | |
597 | #undef C | |
598 | ||
599 | return status; | |
600 | } | |
601 | ||
ec5b01dd | 602 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 603 | { |
174edf1f PZ |
604 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
605 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 606 | |
ec5b01dd DL |
607 | /* |
608 | * The clock divider is based off the hrawclk, and would like to run at | |
609 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 610 | */ |
ec5b01dd DL |
611 | return index ? 0 : intel_hrawclk(dev) / 2; |
612 | } | |
613 | ||
614 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
615 | { | |
616 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
617 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
618 | ||
619 | if (index) | |
620 | return 0; | |
621 | ||
622 | if (intel_dig_port->port == PORT_A) { | |
623 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
b84a1cf8 | 624 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 625 | else |
b84a1cf8 | 626 | return 225; /* eDP input clock at 450Mhz */ |
ec5b01dd DL |
627 | } else { |
628 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
629 | } | |
630 | } | |
631 | ||
632 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
633 | { | |
634 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
635 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
636 | struct drm_i915_private *dev_priv = dev->dev_private; | |
637 | ||
638 | if (intel_dig_port->port == PORT_A) { | |
639 | if (index) | |
640 | return 0; | |
641 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
2c55c336 JN |
642 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
643 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
644 | switch (index) { |
645 | case 0: return 63; | |
646 | case 1: return 72; | |
647 | default: return 0; | |
648 | } | |
ec5b01dd | 649 | } else { |
bc86625a | 650 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 651 | } |
b84a1cf8 RV |
652 | } |
653 | ||
ec5b01dd DL |
654 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
655 | { | |
656 | return index ? 0 : 100; | |
657 | } | |
658 | ||
b6b5e383 DL |
659 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
660 | { | |
661 | /* | |
662 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
663 | * derive the clock from CDCLK automatically). We still implement the | |
664 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
665 | */ | |
666 | return index ? 0 : 1; | |
667 | } | |
668 | ||
5ed12a19 DL |
669 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
670 | bool has_aux_irq, | |
671 | int send_bytes, | |
672 | uint32_t aux_clock_divider) | |
673 | { | |
674 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
675 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
676 | uint32_t precharge, timeout; | |
677 | ||
678 | if (IS_GEN6(dev)) | |
679 | precharge = 3; | |
680 | else | |
681 | precharge = 5; | |
682 | ||
683 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
684 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
685 | else | |
686 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
687 | ||
688 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 689 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 690 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 691 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 692 | timeout | |
788d4433 | 693 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
694 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
695 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 696 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
697 | } |
698 | ||
b9ca5fad DL |
699 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
700 | bool has_aux_irq, | |
701 | int send_bytes, | |
702 | uint32_t unused) | |
703 | { | |
704 | return DP_AUX_CH_CTL_SEND_BUSY | | |
705 | DP_AUX_CH_CTL_DONE | | |
706 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
707 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
708 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
709 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
710 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
711 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
712 | } | |
713 | ||
b84a1cf8 RV |
714 | static int |
715 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 716 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
717 | uint8_t *recv, int recv_size) |
718 | { | |
719 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
720 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
721 | struct drm_i915_private *dev_priv = dev->dev_private; | |
722 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
723 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 724 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
725 | int i, ret, recv_bytes; |
726 | uint32_t status; | |
5ed12a19 | 727 | int try, clock = 0; |
4e6b788c | 728 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
729 | bool vdd; |
730 | ||
773538e8 | 731 | pps_lock(intel_dp); |
e39b999a | 732 | |
72c3500a VS |
733 | /* |
734 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
735 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
736 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
737 | * ourselves. | |
738 | */ | |
1e0560e0 | 739 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
740 | |
741 | /* dp aux is extremely sensitive to irq latency, hence request the | |
742 | * lowest possible wakeup latency and so prevent the cpu from going into | |
743 | * deep sleep states. | |
744 | */ | |
745 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
746 | ||
747 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 748 | |
c67a470b PZ |
749 | intel_aux_display_runtime_get(dev_priv); |
750 | ||
11bee43e JB |
751 | /* Try to wait for any previous AUX channel activity */ |
752 | for (try = 0; try < 3; try++) { | |
ef04f00d | 753 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
754 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
755 | break; | |
756 | msleep(1); | |
757 | } | |
758 | ||
759 | if (try == 3) { | |
760 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
761 | I915_READ(ch_ctl)); | |
9ee32fea DV |
762 | ret = -EBUSY; |
763 | goto out; | |
4f7f7b7e CW |
764 | } |
765 | ||
46a5ae9f PZ |
766 | /* Only 5 data registers! */ |
767 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
768 | ret = -E2BIG; | |
769 | goto out; | |
770 | } | |
771 | ||
ec5b01dd | 772 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
773 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
774 | has_aux_irq, | |
775 | send_bytes, | |
776 | aux_clock_divider); | |
5ed12a19 | 777 | |
bc86625a CW |
778 | /* Must try at least 3 times according to DP spec */ |
779 | for (try = 0; try < 5; try++) { | |
780 | /* Load the send data into the aux channel data registers */ | |
781 | for (i = 0; i < send_bytes; i += 4) | |
782 | I915_WRITE(ch_data + i, | |
783 | pack_aux(send + i, send_bytes - i)); | |
784 | ||
785 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 786 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
787 | |
788 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
789 | ||
790 | /* Clear done status and any errors */ | |
791 | I915_WRITE(ch_ctl, | |
792 | status | | |
793 | DP_AUX_CH_CTL_DONE | | |
794 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
795 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
796 | ||
797 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
798 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
799 | continue; | |
800 | if (status & DP_AUX_CH_CTL_DONE) | |
801 | break; | |
802 | } | |
4f7f7b7e | 803 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
804 | break; |
805 | } | |
806 | ||
a4fc5ed6 | 807 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 808 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
809 | ret = -EBUSY; |
810 | goto out; | |
a4fc5ed6 KP |
811 | } |
812 | ||
813 | /* Check for timeout or receive error. | |
814 | * Timeouts occur when the sink is not connected | |
815 | */ | |
a5b3da54 | 816 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 817 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
818 | ret = -EIO; |
819 | goto out; | |
a5b3da54 | 820 | } |
1ae8c0a5 KP |
821 | |
822 | /* Timeouts occur when the device isn't connected, so they're | |
823 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 824 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 825 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
826 | ret = -ETIMEDOUT; |
827 | goto out; | |
a4fc5ed6 KP |
828 | } |
829 | ||
830 | /* Unload any bytes sent back from the other side */ | |
831 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
832 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
833 | if (recv_bytes > recv_size) |
834 | recv_bytes = recv_size; | |
0206e353 | 835 | |
4f7f7b7e CW |
836 | for (i = 0; i < recv_bytes; i += 4) |
837 | unpack_aux(I915_READ(ch_data + i), | |
838 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 839 | |
9ee32fea DV |
840 | ret = recv_bytes; |
841 | out: | |
842 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 843 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 844 | |
884f19e9 JN |
845 | if (vdd) |
846 | edp_panel_vdd_off(intel_dp, false); | |
847 | ||
773538e8 | 848 | pps_unlock(intel_dp); |
e39b999a | 849 | |
9ee32fea | 850 | return ret; |
a4fc5ed6 KP |
851 | } |
852 | ||
a6c8aff0 JN |
853 | #define BARE_ADDRESS_SIZE 3 |
854 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
855 | static ssize_t |
856 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 857 | { |
9d1a1031 JN |
858 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
859 | uint8_t txbuf[20], rxbuf[20]; | |
860 | size_t txsize, rxsize; | |
a4fc5ed6 | 861 | int ret; |
a4fc5ed6 | 862 | |
9d1a1031 JN |
863 | txbuf[0] = msg->request << 4; |
864 | txbuf[1] = msg->address >> 8; | |
865 | txbuf[2] = msg->address & 0xff; | |
866 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 867 | |
9d1a1031 JN |
868 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
869 | case DP_AUX_NATIVE_WRITE: | |
870 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 871 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
9d1a1031 | 872 | rxsize = 1; |
f51a44b9 | 873 | |
9d1a1031 JN |
874 | if (WARN_ON(txsize > 20)) |
875 | return -E2BIG; | |
a4fc5ed6 | 876 | |
9d1a1031 | 877 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 878 | |
9d1a1031 JN |
879 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
880 | if (ret > 0) { | |
881 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 882 | |
9d1a1031 JN |
883 | /* Return payload size. */ |
884 | ret = msg->size; | |
885 | } | |
886 | break; | |
46a5ae9f | 887 | |
9d1a1031 JN |
888 | case DP_AUX_NATIVE_READ: |
889 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 890 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 891 | rxsize = msg->size + 1; |
a4fc5ed6 | 892 | |
9d1a1031 JN |
893 | if (WARN_ON(rxsize > 20)) |
894 | return -E2BIG; | |
a4fc5ed6 | 895 | |
9d1a1031 JN |
896 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
897 | if (ret > 0) { | |
898 | msg->reply = rxbuf[0] >> 4; | |
899 | /* | |
900 | * Assume happy day, and copy the data. The caller is | |
901 | * expected to check msg->reply before touching it. | |
902 | * | |
903 | * Return payload size. | |
904 | */ | |
905 | ret--; | |
906 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 907 | } |
9d1a1031 JN |
908 | break; |
909 | ||
910 | default: | |
911 | ret = -EINVAL; | |
912 | break; | |
a4fc5ed6 | 913 | } |
f51a44b9 | 914 | |
9d1a1031 | 915 | return ret; |
a4fc5ed6 KP |
916 | } |
917 | ||
9d1a1031 JN |
918 | static void |
919 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
920 | { | |
921 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
922 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
923 | enum port port = intel_dig_port->port; | |
0b99836f | 924 | const char *name = NULL; |
ab2c0672 DA |
925 | int ret; |
926 | ||
33ad6626 JN |
927 | switch (port) { |
928 | case PORT_A: | |
929 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 930 | name = "DPDDC-A"; |
ab2c0672 | 931 | break; |
33ad6626 JN |
932 | case PORT_B: |
933 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 934 | name = "DPDDC-B"; |
ab2c0672 | 935 | break; |
33ad6626 JN |
936 | case PORT_C: |
937 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 938 | name = "DPDDC-C"; |
ab2c0672 | 939 | break; |
33ad6626 JN |
940 | case PORT_D: |
941 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 942 | name = "DPDDC-D"; |
33ad6626 JN |
943 | break; |
944 | default: | |
945 | BUG(); | |
ab2c0672 DA |
946 | } |
947 | ||
1b1aad75 DL |
948 | /* |
949 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
950 | * | |
951 | * On Haswell and Broadwell though: | |
952 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
953 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
954 | * | |
955 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
956 | */ | |
957 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) | |
33ad6626 | 958 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 959 | |
0b99836f | 960 | intel_dp->aux.name = name; |
9d1a1031 JN |
961 | intel_dp->aux.dev = dev->dev; |
962 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 963 | |
0b99836f JN |
964 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
965 | connector->base.kdev->kobj.name); | |
8316f337 | 966 | |
4f71d0cb | 967 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 968 | if (ret < 0) { |
4f71d0cb | 969 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
970 | name, ret); |
971 | return; | |
ab2c0672 | 972 | } |
8a5e6aeb | 973 | |
0b99836f JN |
974 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
975 | &intel_dp->aux.ddc.dev.kobj, | |
976 | intel_dp->aux.ddc.dev.kobj.name); | |
977 | if (ret < 0) { | |
978 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 979 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 980 | } |
a4fc5ed6 KP |
981 | } |
982 | ||
80f65de3 ID |
983 | static void |
984 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
985 | { | |
986 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
987 | ||
0e32b39c DA |
988 | if (!intel_connector->mst_port) |
989 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
990 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
991 | intel_connector_unregister(intel_connector); |
992 | } | |
993 | ||
0e50338c DV |
994 | static void |
995 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_config *pipe_config, int link_bw) | |
996 | { | |
997 | switch (link_bw) { | |
998 | case DP_LINK_BW_1_62: | |
999 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
1000 | break; | |
1001 | case DP_LINK_BW_2_7: | |
1002 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
1003 | break; | |
1004 | case DP_LINK_BW_5_4: | |
1005 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
1006 | break; | |
1007 | } | |
1008 | } | |
1009 | ||
c6bb3538 DV |
1010 | static void |
1011 | intel_dp_set_clock(struct intel_encoder *encoder, | |
1012 | struct intel_crtc_config *pipe_config, int link_bw) | |
1013 | { | |
1014 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1015 | const struct dp_link_dpll *divisor = NULL; |
1016 | int i, count = 0; | |
c6bb3538 DV |
1017 | |
1018 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1019 | divisor = gen4_dpll; |
1020 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1021 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1022 | divisor = pch_dpll; |
1023 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1024 | } else if (IS_CHERRYVIEW(dev)) { |
1025 | divisor = chv_dpll; | |
1026 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1027 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1028 | divisor = vlv_dpll; |
1029 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1030 | } |
9dd4ffdf CML |
1031 | |
1032 | if (divisor && count) { | |
1033 | for (i = 0; i < count; i++) { | |
1034 | if (link_bw == divisor[i].link_bw) { | |
1035 | pipe_config->dpll = divisor[i].dpll; | |
1036 | pipe_config->clock_set = true; | |
1037 | break; | |
1038 | } | |
1039 | } | |
c6bb3538 DV |
1040 | } |
1041 | } | |
1042 | ||
00c09d70 | 1043 | bool |
5bfe2ac0 DV |
1044 | intel_dp_compute_config(struct intel_encoder *encoder, |
1045 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 1046 | { |
5bfe2ac0 | 1047 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1048 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 1049 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 1050 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1051 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 1052 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 1053 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1054 | int lane_count, clock; |
56071a20 | 1055 | int min_lane_count = 1; |
eeb6324d | 1056 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1057 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1058 | int min_clock = 0; |
06ea66b6 | 1059 | int max_clock = intel_dp_max_link_bw(intel_dp) >> 3; |
083f9560 | 1060 | int bpp, mode_rate; |
06ea66b6 | 1061 | static int bws[] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7, DP_LINK_BW_5_4 }; |
ff9a6750 | 1062 | int link_avail, link_clock; |
a4fc5ed6 | 1063 | |
bc7d38a4 | 1064 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1065 | pipe_config->has_pch_encoder = true; |
1066 | ||
03afc4a2 | 1067 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1068 | pipe_config->has_drrs = false; |
9ed109a7 | 1069 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 1070 | |
dd06f90e JN |
1071 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1072 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1073 | adjusted_mode); | |
2dd24552 JB |
1074 | if (!HAS_PCH_SPLIT(dev)) |
1075 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1076 | intel_connector->panel.fitting_mode); | |
1077 | else | |
b074cec8 JB |
1078 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1079 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1080 | } |
1081 | ||
cb1793ce | 1082 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1083 | return false; |
1084 | ||
083f9560 DV |
1085 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
1086 | "max bw %02x pixel clock %iKHz\n", | |
241bfc38 DL |
1087 | max_lane_count, bws[max_clock], |
1088 | adjusted_mode->crtc_clock); | |
083f9560 | 1089 | |
36008365 DV |
1090 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1091 | * bpc in between. */ | |
3e7ca985 | 1092 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1093 | if (is_edp(intel_dp)) { |
1094 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1095 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1096 | dev_priv->vbt.edp_bpp); | |
1097 | bpp = dev_priv->vbt.edp_bpp; | |
1098 | } | |
1099 | ||
344c5bbc JN |
1100 | /* |
1101 | * Use the maximum clock and number of lanes the eDP panel | |
1102 | * advertizes being capable of. The panels are generally | |
1103 | * designed to support only a single clock and lane | |
1104 | * configuration, and typically these values correspond to the | |
1105 | * native resolution of the panel. | |
1106 | */ | |
1107 | min_lane_count = max_lane_count; | |
1108 | min_clock = max_clock; | |
7984211e | 1109 | } |
657445fe | 1110 | |
36008365 | 1111 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1112 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1113 | bpp); | |
36008365 | 1114 | |
c6930992 DA |
1115 | for (clock = min_clock; clock <= max_clock; clock++) { |
1116 | for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) { | |
36008365 DV |
1117 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); |
1118 | link_avail = intel_dp_max_data_rate(link_clock, | |
1119 | lane_count); | |
1120 | ||
1121 | if (mode_rate <= link_avail) { | |
1122 | goto found; | |
1123 | } | |
1124 | } | |
1125 | } | |
1126 | } | |
c4867936 | 1127 | |
36008365 | 1128 | return false; |
3685a8f3 | 1129 | |
36008365 | 1130 | found: |
55bc60db VS |
1131 | if (intel_dp->color_range_auto) { |
1132 | /* | |
1133 | * See: | |
1134 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1135 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1136 | */ | |
18316c8c | 1137 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1138 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1139 | else | |
1140 | intel_dp->color_range = 0; | |
1141 | } | |
1142 | ||
3685a8f3 | 1143 | if (intel_dp->color_range) |
50f3b016 | 1144 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1145 | |
36008365 DV |
1146 | intel_dp->link_bw = bws[clock]; |
1147 | intel_dp->lane_count = lane_count; | |
657445fe | 1148 | pipe_config->pipe_bpp = bpp; |
ff9a6750 | 1149 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
a4fc5ed6 | 1150 | |
36008365 DV |
1151 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1152 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1153 | pipe_config->port_clock, bpp); |
36008365 DV |
1154 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1155 | mode_rate, link_avail); | |
a4fc5ed6 | 1156 | |
03afc4a2 | 1157 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1158 | adjusted_mode->crtc_clock, |
1159 | pipe_config->port_clock, | |
03afc4a2 | 1160 | &pipe_config->dp_m_n); |
9d1a455b | 1161 | |
439d7ac0 PB |
1162 | if (intel_connector->panel.downclock_mode != NULL && |
1163 | intel_dp->drrs_state.type == SEAMLESS_DRRS_SUPPORT) { | |
f769cd24 | 1164 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1165 | intel_link_compute_m_n(bpp, lane_count, |
1166 | intel_connector->panel.downclock_mode->clock, | |
1167 | pipe_config->port_clock, | |
1168 | &pipe_config->dp_m2_n2); | |
1169 | } | |
1170 | ||
ea155f32 | 1171 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1172 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1173 | else | |
1174 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1175 | |
03afc4a2 | 1176 | return true; |
a4fc5ed6 KP |
1177 | } |
1178 | ||
7c62a164 | 1179 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1180 | { |
7c62a164 DV |
1181 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1182 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1183 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1184 | struct drm_i915_private *dev_priv = dev->dev_private; |
1185 | u32 dpa_ctl; | |
1186 | ||
ff9a6750 | 1187 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", crtc->config.port_clock); |
ea9b6006 DV |
1188 | dpa_ctl = I915_READ(DP_A); |
1189 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1190 | ||
ff9a6750 | 1191 | if (crtc->config.port_clock == 162000) { |
1ce17038 DV |
1192 | /* For a long time we've carried around a ILK-DevA w/a for the |
1193 | * 160MHz clock. If we're really unlucky, it's still required. | |
1194 | */ | |
1195 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1196 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1197 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1198 | } else { |
1199 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1200 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1201 | } |
1ce17038 | 1202 | |
ea9b6006 DV |
1203 | I915_WRITE(DP_A, dpa_ctl); |
1204 | ||
1205 | POSTING_READ(DP_A); | |
1206 | udelay(500); | |
1207 | } | |
1208 | ||
8ac33ed3 | 1209 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1210 | { |
b934223d | 1211 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1212 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1213 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1214 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d DV |
1215 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
1216 | struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode; | |
a4fc5ed6 | 1217 | |
417e822d | 1218 | /* |
1a2eb460 | 1219 | * There are four kinds of DP registers: |
417e822d KP |
1220 | * |
1221 | * IBX PCH | |
1a2eb460 KP |
1222 | * SNB CPU |
1223 | * IVB CPU | |
417e822d KP |
1224 | * CPT PCH |
1225 | * | |
1226 | * IBX PCH and CPU are the same for almost everything, | |
1227 | * except that the CPU DP PLL is configured in this | |
1228 | * register | |
1229 | * | |
1230 | * CPT PCH is quite different, having many bits moved | |
1231 | * to the TRANS_DP_CTL register instead. That | |
1232 | * configuration happens (oddly) in ironlake_pch_enable | |
1233 | */ | |
9c9e7927 | 1234 | |
417e822d KP |
1235 | /* Preserve the BIOS-computed detected bit. This is |
1236 | * supposed to be read-only. | |
1237 | */ | |
1238 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1239 | |
417e822d | 1240 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1241 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1242 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1243 | |
9ed109a7 | 1244 | if (crtc->config.has_audio) { |
e0dac65e | 1245 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
7c62a164 | 1246 | pipe_name(crtc->pipe)); |
ea5b213a | 1247 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
33d1e7c6 | 1248 | intel_write_eld(encoder); |
e0dac65e | 1249 | } |
247d89f6 | 1250 | |
417e822d | 1251 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1252 | |
bc7d38a4 | 1253 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1254 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1255 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1256 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1257 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1258 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1259 | ||
6aba5b6c | 1260 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1261 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1262 | ||
7c62a164 | 1263 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1264 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1265 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1266 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1267 | |
1268 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1269 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1270 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1271 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1272 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1273 | ||
6aba5b6c | 1274 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1275 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1276 | ||
44f37d1f CML |
1277 | if (!IS_CHERRYVIEW(dev)) { |
1278 | if (crtc->pipe == 1) | |
1279 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1280 | } else { | |
1281 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1282 | } | |
417e822d KP |
1283 | } else { |
1284 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1285 | } |
a4fc5ed6 KP |
1286 | } |
1287 | ||
ffd6749d PZ |
1288 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1289 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1290 | |
1a5ef5b7 PZ |
1291 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1292 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1293 | |
ffd6749d PZ |
1294 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1295 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1296 | |
4be73780 | 1297 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1298 | u32 mask, |
1299 | u32 value) | |
bd943159 | 1300 | { |
30add22d | 1301 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1302 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1303 | u32 pp_stat_reg, pp_ctrl_reg; |
1304 | ||
e39b999a VS |
1305 | lockdep_assert_held(&dev_priv->pps_mutex); |
1306 | ||
bf13e81b JN |
1307 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1308 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1309 | |
99ea7127 | 1310 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1311 | mask, value, |
1312 | I915_READ(pp_stat_reg), | |
1313 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1314 | |
453c5420 | 1315 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1316 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1317 | I915_READ(pp_stat_reg), |
1318 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1319 | } |
54c136d4 CW |
1320 | |
1321 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1322 | } |
32ce697c | 1323 | |
4be73780 | 1324 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1325 | { |
1326 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1327 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1328 | } |
1329 | ||
4be73780 | 1330 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1331 | { |
1332 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1333 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1334 | } |
1335 | ||
4be73780 | 1336 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1337 | { |
1338 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1339 | |
1340 | /* When we disable the VDD override bit last we have to do the manual | |
1341 | * wait. */ | |
1342 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1343 | intel_dp->panel_power_cycle_delay); | |
1344 | ||
4be73780 | 1345 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1346 | } |
1347 | ||
4be73780 | 1348 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1349 | { |
1350 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1351 | intel_dp->backlight_on_delay); | |
1352 | } | |
1353 | ||
4be73780 | 1354 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1355 | { |
1356 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1357 | intel_dp->backlight_off_delay); | |
1358 | } | |
99ea7127 | 1359 | |
832dd3c1 KP |
1360 | /* Read the current pp_control value, unlocking the register if it |
1361 | * is locked | |
1362 | */ | |
1363 | ||
453c5420 | 1364 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1365 | { |
453c5420 JB |
1366 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1367 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1368 | u32 control; | |
832dd3c1 | 1369 | |
e39b999a VS |
1370 | lockdep_assert_held(&dev_priv->pps_mutex); |
1371 | ||
bf13e81b | 1372 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1373 | control &= ~PANEL_UNLOCK_MASK; |
1374 | control |= PANEL_UNLOCK_REGS; | |
1375 | return control; | |
bd943159 KP |
1376 | } |
1377 | ||
951468f3 VS |
1378 | /* |
1379 | * Must be paired with edp_panel_vdd_off(). | |
1380 | * Must hold pps_mutex around the whole on/off sequence. | |
1381 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1382 | */ | |
1e0560e0 | 1383 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1384 | { |
30add22d | 1385 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1386 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1387 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1388 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1389 | enum intel_display_power_domain power_domain; |
5d613501 | 1390 | u32 pp; |
453c5420 | 1391 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1392 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1393 | |
e39b999a VS |
1394 | lockdep_assert_held(&dev_priv->pps_mutex); |
1395 | ||
97af61f5 | 1396 | if (!is_edp(intel_dp)) |
adddaaf4 | 1397 | return false; |
bd943159 KP |
1398 | |
1399 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 1400 | |
4be73780 | 1401 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1402 | return need_to_disable; |
b0665d57 | 1403 | |
4e6e1a54 ID |
1404 | power_domain = intel_display_port_power_domain(intel_encoder); |
1405 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1406 | |
b0665d57 | 1407 | DRM_DEBUG_KMS("Turning eDP VDD on\n"); |
bd943159 | 1408 | |
4be73780 DV |
1409 | if (!edp_have_panel_power(intel_dp)) |
1410 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1411 | |
453c5420 | 1412 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1413 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1414 | |
bf13e81b JN |
1415 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1416 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1417 | |
1418 | I915_WRITE(pp_ctrl_reg, pp); | |
1419 | POSTING_READ(pp_ctrl_reg); | |
1420 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1421 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1422 | /* |
1423 | * If the panel wasn't on, delay before accessing aux channel | |
1424 | */ | |
4be73780 | 1425 | if (!edp_have_panel_power(intel_dp)) { |
bd943159 | 1426 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1427 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1428 | } |
adddaaf4 JN |
1429 | |
1430 | return need_to_disable; | |
1431 | } | |
1432 | ||
951468f3 VS |
1433 | /* |
1434 | * Must be paired with intel_edp_panel_vdd_off() or | |
1435 | * intel_edp_panel_off(). | |
1436 | * Nested calls to these functions are not allowed since | |
1437 | * we drop the lock. Caller must use some higher level | |
1438 | * locking to prevent nested calls from other threads. | |
1439 | */ | |
b80d6c78 | 1440 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1441 | { |
c695b6b6 | 1442 | bool vdd; |
adddaaf4 | 1443 | |
c695b6b6 VS |
1444 | if (!is_edp(intel_dp)) |
1445 | return; | |
1446 | ||
773538e8 | 1447 | pps_lock(intel_dp); |
c695b6b6 | 1448 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1449 | pps_unlock(intel_dp); |
c695b6b6 VS |
1450 | |
1451 | WARN(!vdd, "eDP VDD already requested on\n"); | |
5d613501 JB |
1452 | } |
1453 | ||
4be73780 | 1454 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1455 | { |
30add22d | 1456 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1457 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1458 | struct intel_digital_port *intel_dig_port = |
1459 | dp_to_dig_port(intel_dp); | |
1460 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1461 | enum intel_display_power_domain power_domain; | |
5d613501 | 1462 | u32 pp; |
453c5420 | 1463 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1464 | |
e39b999a | 1465 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1466 | |
15e899a0 | 1467 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1468 | |
15e899a0 | 1469 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1470 | return; |
b0665d57 | 1471 | |
be2c9196 | 1472 | DRM_DEBUG_KMS("Turning eDP VDD off\n"); |
bd943159 | 1473 | |
be2c9196 VS |
1474 | pp = ironlake_get_pp_control(intel_dp); |
1475 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1476 | |
be2c9196 VS |
1477 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1478 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1479 | |
be2c9196 VS |
1480 | I915_WRITE(pp_ctrl_reg, pp); |
1481 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1482 | |
be2c9196 VS |
1483 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1484 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1485 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1486 | |
be2c9196 VS |
1487 | if ((pp & POWER_TARGET_ON) == 0) |
1488 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1489 | |
be2c9196 VS |
1490 | power_domain = intel_display_port_power_domain(intel_encoder); |
1491 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1492 | } |
5d613501 | 1493 | |
4be73780 | 1494 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1495 | { |
1496 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1497 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1498 | |
773538e8 | 1499 | pps_lock(intel_dp); |
15e899a0 VS |
1500 | if (!intel_dp->want_panel_vdd) |
1501 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1502 | pps_unlock(intel_dp); |
bd943159 KP |
1503 | } |
1504 | ||
aba86890 ID |
1505 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1506 | { | |
1507 | unsigned long delay; | |
1508 | ||
1509 | /* | |
1510 | * Queue the timer to fire a long time from now (relative to the power | |
1511 | * down delay) to keep the panel power up across a sequence of | |
1512 | * operations. | |
1513 | */ | |
1514 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1515 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1516 | } | |
1517 | ||
951468f3 VS |
1518 | /* |
1519 | * Must be paired with edp_panel_vdd_on(). | |
1520 | * Must hold pps_mutex around the whole on/off sequence. | |
1521 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1522 | */ | |
4be73780 | 1523 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1524 | { |
e39b999a VS |
1525 | struct drm_i915_private *dev_priv = |
1526 | intel_dp_to_dev(intel_dp)->dev_private; | |
1527 | ||
1528 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1529 | ||
97af61f5 KP |
1530 | if (!is_edp(intel_dp)) |
1531 | return; | |
5d613501 | 1532 | |
bd943159 | 1533 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); |
f2e8b18a | 1534 | |
bd943159 KP |
1535 | intel_dp->want_panel_vdd = false; |
1536 | ||
aba86890 | 1537 | if (sync) |
4be73780 | 1538 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1539 | else |
1540 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1541 | } |
1542 | ||
9f0fb5be | 1543 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1544 | { |
30add22d | 1545 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1546 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1547 | u32 pp; |
453c5420 | 1548 | u32 pp_ctrl_reg; |
9934c132 | 1549 | |
9f0fb5be VS |
1550 | lockdep_assert_held(&dev_priv->pps_mutex); |
1551 | ||
97af61f5 | 1552 | if (!is_edp(intel_dp)) |
bd943159 | 1553 | return; |
99ea7127 KP |
1554 | |
1555 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1556 | ||
4be73780 | 1557 | if (edp_have_panel_power(intel_dp)) { |
99ea7127 | 1558 | DRM_DEBUG_KMS("eDP power already on\n"); |
9f0fb5be | 1559 | return; |
99ea7127 | 1560 | } |
9934c132 | 1561 | |
4be73780 | 1562 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1563 | |
bf13e81b | 1564 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1565 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1566 | if (IS_GEN5(dev)) { |
1567 | /* ILK workaround: disable reset around power sequence */ | |
1568 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1569 | I915_WRITE(pp_ctrl_reg, pp); |
1570 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1571 | } |
37c6c9b0 | 1572 | |
1c0ae80a | 1573 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1574 | if (!IS_GEN5(dev)) |
1575 | pp |= PANEL_POWER_RESET; | |
1576 | ||
453c5420 JB |
1577 | I915_WRITE(pp_ctrl_reg, pp); |
1578 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1579 | |
4be73780 | 1580 | wait_panel_on(intel_dp); |
dce56b3c | 1581 | intel_dp->last_power_on = jiffies; |
9934c132 | 1582 | |
05ce1a49 KP |
1583 | if (IS_GEN5(dev)) { |
1584 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1585 | I915_WRITE(pp_ctrl_reg, pp); |
1586 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1587 | } |
9f0fb5be | 1588 | } |
e39b999a | 1589 | |
9f0fb5be VS |
1590 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1591 | { | |
1592 | if (!is_edp(intel_dp)) | |
1593 | return; | |
1594 | ||
1595 | pps_lock(intel_dp); | |
1596 | edp_panel_on(intel_dp); | |
773538e8 | 1597 | pps_unlock(intel_dp); |
9934c132 JB |
1598 | } |
1599 | ||
9f0fb5be VS |
1600 | |
1601 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1602 | { |
4e6e1a54 ID |
1603 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1604 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1605 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1606 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1607 | enum intel_display_power_domain power_domain; |
99ea7127 | 1608 | u32 pp; |
453c5420 | 1609 | u32 pp_ctrl_reg; |
9934c132 | 1610 | |
9f0fb5be VS |
1611 | lockdep_assert_held(&dev_priv->pps_mutex); |
1612 | ||
97af61f5 KP |
1613 | if (!is_edp(intel_dp)) |
1614 | return; | |
37c6c9b0 | 1615 | |
99ea7127 | 1616 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1617 | |
24f3e092 JN |
1618 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
1619 | ||
453c5420 | 1620 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1621 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1622 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1623 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1624 | EDP_BLC_ENABLE); | |
453c5420 | 1625 | |
bf13e81b | 1626 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1627 | |
849e39f5 PZ |
1628 | intel_dp->want_panel_vdd = false; |
1629 | ||
453c5420 JB |
1630 | I915_WRITE(pp_ctrl_reg, pp); |
1631 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1632 | |
dce56b3c | 1633 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1634 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1635 | |
1636 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1637 | power_domain = intel_display_port_power_domain(intel_encoder); |
1638 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 1639 | } |
e39b999a | 1640 | |
9f0fb5be VS |
1641 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
1642 | { | |
1643 | if (!is_edp(intel_dp)) | |
1644 | return; | |
1645 | ||
1646 | pps_lock(intel_dp); | |
1647 | edp_panel_off(intel_dp); | |
773538e8 | 1648 | pps_unlock(intel_dp); |
9934c132 JB |
1649 | } |
1650 | ||
1250d107 JN |
1651 | /* Enable backlight in the panel power control. */ |
1652 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1653 | { |
da63a9f2 PZ |
1654 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1655 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1656 | struct drm_i915_private *dev_priv = dev->dev_private; |
1657 | u32 pp; | |
453c5420 | 1658 | u32 pp_ctrl_reg; |
32f9d658 | 1659 | |
01cb9ea6 JB |
1660 | /* |
1661 | * If we enable the backlight right away following a panel power | |
1662 | * on, we may see slight flicker as the panel syncs with the eDP | |
1663 | * link. So delay a bit to make sure the image is solid before | |
1664 | * allowing it to appear. | |
1665 | */ | |
4be73780 | 1666 | wait_backlight_on(intel_dp); |
e39b999a | 1667 | |
773538e8 | 1668 | pps_lock(intel_dp); |
e39b999a | 1669 | |
453c5420 | 1670 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1671 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1672 | |
bf13e81b | 1673 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1674 | |
1675 | I915_WRITE(pp_ctrl_reg, pp); | |
1676 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1677 | |
773538e8 | 1678 | pps_unlock(intel_dp); |
32f9d658 ZW |
1679 | } |
1680 | ||
1250d107 JN |
1681 | /* Enable backlight PWM and backlight PP control. */ |
1682 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1683 | { | |
1684 | if (!is_edp(intel_dp)) | |
1685 | return; | |
1686 | ||
1687 | DRM_DEBUG_KMS("\n"); | |
1688 | ||
1689 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1690 | _intel_edp_backlight_on(intel_dp); | |
1691 | } | |
1692 | ||
1693 | /* Disable backlight in the panel power control. */ | |
1694 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 1695 | { |
30add22d | 1696 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1697 | struct drm_i915_private *dev_priv = dev->dev_private; |
1698 | u32 pp; | |
453c5420 | 1699 | u32 pp_ctrl_reg; |
32f9d658 | 1700 | |
f01eca2e KP |
1701 | if (!is_edp(intel_dp)) |
1702 | return; | |
1703 | ||
773538e8 | 1704 | pps_lock(intel_dp); |
e39b999a | 1705 | |
453c5420 | 1706 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1707 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1708 | |
bf13e81b | 1709 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1710 | |
1711 | I915_WRITE(pp_ctrl_reg, pp); | |
1712 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 1713 | |
773538e8 | 1714 | pps_unlock(intel_dp); |
e39b999a VS |
1715 | |
1716 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 1717 | edp_wait_backlight_off(intel_dp); |
1250d107 | 1718 | } |
f7d2323c | 1719 | |
1250d107 JN |
1720 | /* Disable backlight PP control and backlight PWM. */ |
1721 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
1722 | { | |
1723 | if (!is_edp(intel_dp)) | |
1724 | return; | |
1725 | ||
1726 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 1727 | |
1250d107 | 1728 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 1729 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 1730 | } |
a4fc5ed6 | 1731 | |
73580fb7 JN |
1732 | /* |
1733 | * Hook for controlling the panel power control backlight through the bl_power | |
1734 | * sysfs attribute. Take care to handle multiple calls. | |
1735 | */ | |
1736 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
1737 | bool enable) | |
1738 | { | |
1739 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
1740 | bool is_enabled; |
1741 | ||
773538e8 | 1742 | pps_lock(intel_dp); |
e39b999a | 1743 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 1744 | pps_unlock(intel_dp); |
73580fb7 JN |
1745 | |
1746 | if (is_enabled == enable) | |
1747 | return; | |
1748 | ||
23ba9373 JN |
1749 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
1750 | enable ? "enable" : "disable"); | |
73580fb7 JN |
1751 | |
1752 | if (enable) | |
1753 | _intel_edp_backlight_on(intel_dp); | |
1754 | else | |
1755 | _intel_edp_backlight_off(intel_dp); | |
1756 | } | |
1757 | ||
2bd2ad64 | 1758 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1759 | { |
da63a9f2 PZ |
1760 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1761 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1762 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1763 | struct drm_i915_private *dev_priv = dev->dev_private; |
1764 | u32 dpa_ctl; | |
1765 | ||
2bd2ad64 DV |
1766 | assert_pipe_disabled(dev_priv, |
1767 | to_intel_crtc(crtc)->pipe); | |
1768 | ||
d240f20f JB |
1769 | DRM_DEBUG_KMS("\n"); |
1770 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1771 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1772 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1773 | ||
1774 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1775 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1776 | * enable bits here to ensure that we don't enable too much. */ | |
1777 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1778 | intel_dp->DP |= DP_PLL_ENABLE; | |
1779 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1780 | POSTING_READ(DP_A); |
1781 | udelay(200); | |
d240f20f JB |
1782 | } |
1783 | ||
2bd2ad64 | 1784 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1785 | { |
da63a9f2 PZ |
1786 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1787 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1788 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1789 | struct drm_i915_private *dev_priv = dev->dev_private; |
1790 | u32 dpa_ctl; | |
1791 | ||
2bd2ad64 DV |
1792 | assert_pipe_disabled(dev_priv, |
1793 | to_intel_crtc(crtc)->pipe); | |
1794 | ||
d240f20f | 1795 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1796 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1797 | "dp pll off, should be on\n"); | |
1798 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1799 | ||
1800 | /* We can't rely on the value tracked for the DP register in | |
1801 | * intel_dp->DP because link_down must not change that (otherwise link | |
1802 | * re-training will fail. */ | |
298b0b39 | 1803 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1804 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1805 | POSTING_READ(DP_A); |
d240f20f JB |
1806 | udelay(200); |
1807 | } | |
1808 | ||
c7ad3810 | 1809 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1810 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1811 | { |
1812 | int ret, i; | |
1813 | ||
1814 | /* Should have a valid DPCD by this point */ | |
1815 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1816 | return; | |
1817 | ||
1818 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
1819 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1820 | DP_SET_POWER_D3); | |
c7ad3810 JB |
1821 | } else { |
1822 | /* | |
1823 | * When turning on, we need to retry for 1ms to give the sink | |
1824 | * time to wake up. | |
1825 | */ | |
1826 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
1827 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1828 | DP_SET_POWER_D0); | |
c7ad3810 JB |
1829 | if (ret == 1) |
1830 | break; | |
1831 | msleep(1); | |
1832 | } | |
1833 | } | |
f9cac721 JN |
1834 | |
1835 | if (ret != 1) | |
1836 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
1837 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
1838 | } |
1839 | ||
19d8fe15 DV |
1840 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1841 | enum pipe *pipe) | |
d240f20f | 1842 | { |
19d8fe15 | 1843 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1844 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1845 | struct drm_device *dev = encoder->base.dev; |
1846 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
1847 | enum intel_display_power_domain power_domain; |
1848 | u32 tmp; | |
1849 | ||
1850 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 1851 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
1852 | return false; |
1853 | ||
1854 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
1855 | |
1856 | if (!(tmp & DP_PORT_EN)) | |
1857 | return false; | |
1858 | ||
bc7d38a4 | 1859 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1860 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
1861 | } else if (IS_CHERRYVIEW(dev)) { |
1862 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 1863 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1864 | *pipe = PORT_TO_PIPE(tmp); |
1865 | } else { | |
1866 | u32 trans_sel; | |
1867 | u32 trans_dp; | |
1868 | int i; | |
1869 | ||
1870 | switch (intel_dp->output_reg) { | |
1871 | case PCH_DP_B: | |
1872 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1873 | break; | |
1874 | case PCH_DP_C: | |
1875 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1876 | break; | |
1877 | case PCH_DP_D: | |
1878 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1879 | break; | |
1880 | default: | |
1881 | return true; | |
1882 | } | |
1883 | ||
055e393f | 1884 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
1885 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
1886 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1887 | *pipe = i; | |
1888 | return true; | |
1889 | } | |
1890 | } | |
19d8fe15 | 1891 | |
4a0833ec DV |
1892 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1893 | intel_dp->output_reg); | |
1894 | } | |
d240f20f | 1895 | |
19d8fe15 DV |
1896 | return true; |
1897 | } | |
d240f20f | 1898 | |
045ac3b5 JB |
1899 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1900 | struct intel_crtc_config *pipe_config) | |
1901 | { | |
1902 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1903 | u32 tmp, flags = 0; |
63000ef6 XZ |
1904 | struct drm_device *dev = encoder->base.dev; |
1905 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1906 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1907 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 1908 | int dotclock; |
045ac3b5 | 1909 | |
9ed109a7 DV |
1910 | tmp = I915_READ(intel_dp->output_reg); |
1911 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
1912 | pipe_config->has_audio = true; | |
1913 | ||
63000ef6 | 1914 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
1915 | if (tmp & DP_SYNC_HS_HIGH) |
1916 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1917 | else | |
1918 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1919 | |
63000ef6 XZ |
1920 | if (tmp & DP_SYNC_VS_HIGH) |
1921 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1922 | else | |
1923 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1924 | } else { | |
1925 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1926 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1927 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1928 | else | |
1929 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1930 | |
63000ef6 XZ |
1931 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1932 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1933 | else | |
1934 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1935 | } | |
045ac3b5 JB |
1936 | |
1937 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc | 1938 | |
8c875fca VS |
1939 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
1940 | tmp & DP_COLOR_RANGE_16_235) | |
1941 | pipe_config->limited_color_range = true; | |
1942 | ||
eb14cb74 VS |
1943 | pipe_config->has_dp_encoder = true; |
1944 | ||
1945 | intel_dp_get_m_n(crtc, pipe_config); | |
1946 | ||
18442d08 | 1947 | if (port == PORT_A) { |
f1f644dc JB |
1948 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
1949 | pipe_config->port_clock = 162000; | |
1950 | else | |
1951 | pipe_config->port_clock = 270000; | |
1952 | } | |
18442d08 VS |
1953 | |
1954 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
1955 | &pipe_config->dp_m_n); | |
1956 | ||
1957 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
1958 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
1959 | ||
241bfc38 | 1960 | pipe_config->adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 1961 | |
c6cd2ee2 JN |
1962 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
1963 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1964 | /* | |
1965 | * This is a big fat ugly hack. | |
1966 | * | |
1967 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1968 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1969 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1970 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1971 | * max, not what it tells us to use. | |
1972 | * | |
1973 | * Note: This will still be broken if the eDP panel is not lit | |
1974 | * up by the BIOS, and thus we can't get the mode at module | |
1975 | * load. | |
1976 | */ | |
1977 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1978 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1979 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1980 | } | |
045ac3b5 JB |
1981 | } |
1982 | ||
34eb7579 | 1983 | static bool is_edp_psr(struct intel_dp *intel_dp) |
2293bb5c | 1984 | { |
34eb7579 | 1985 | return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; |
2293bb5c SK |
1986 | } |
1987 | ||
2b28bb1b RV |
1988 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1989 | { | |
1990 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1991 | ||
18b5992c | 1992 | if (!HAS_PSR(dev)) |
2b28bb1b RV |
1993 | return false; |
1994 | ||
18b5992c | 1995 | return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE; |
2b28bb1b RV |
1996 | } |
1997 | ||
1998 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1999 | struct edp_vsc_psr *vsc_psr) | |
2000 | { | |
2001 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
2002 | struct drm_device *dev = dig_port->base.base.dev; | |
2003 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2004 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
2005 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
2006 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
2007 | uint32_t *data = (uint32_t *) vsc_psr; | |
2008 | unsigned int i; | |
2009 | ||
2010 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
2011 | the video DIP being updated before program video DIP data buffer | |
2012 | registers for DIP being updated. */ | |
2013 | I915_WRITE(ctl_reg, 0); | |
2014 | POSTING_READ(ctl_reg); | |
2015 | ||
2016 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
2017 | if (i < sizeof(struct edp_vsc_psr)) | |
2018 | I915_WRITE(data_reg + i, *data++); | |
2019 | else | |
2020 | I915_WRITE(data_reg + i, 0); | |
2021 | } | |
2022 | ||
2023 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
2024 | POSTING_READ(ctl_reg); | |
2025 | } | |
2026 | ||
ba80f4d4 | 2027 | static void intel_edp_psr_setup_vsc(struct intel_dp *intel_dp) |
2b28bb1b | 2028 | { |
2b28bb1b RV |
2029 | struct edp_vsc_psr psr_vsc; |
2030 | ||
2b28bb1b RV |
2031 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ |
2032 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
2033 | psr_vsc.sdp_header.HB0 = 0; | |
2034 | psr_vsc.sdp_header.HB1 = 0x7; | |
2035 | psr_vsc.sdp_header.HB2 = 0x2; | |
2036 | psr_vsc.sdp_header.HB3 = 0x8; | |
2037 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
2b28bb1b RV |
2038 | } |
2039 | ||
2040 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
2041 | { | |
0e0ae652 RV |
2042 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
2043 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b | 2044 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd | 2045 | uint32_t aux_clock_divider; |
2b28bb1b | 2046 | int precharge = 0x3; |
0e0ae652 | 2047 | bool only_standby = false; |
5ca476f8 VS |
2048 | static const uint8_t aux_msg[] = { |
2049 | [0] = DP_AUX_NATIVE_WRITE << 4, | |
2050 | [1] = DP_SET_POWER >> 8, | |
2051 | [2] = DP_SET_POWER & 0xff, | |
2052 | [3] = 1 - 1, | |
2053 | [4] = DP_SET_POWER_D0, | |
2054 | }; | |
2055 | int i; | |
2056 | ||
2057 | BUILD_BUG_ON(sizeof(aux_msg) > 20); | |
2b28bb1b | 2058 | |
ec5b01dd DL |
2059 | aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0); |
2060 | ||
0e0ae652 RV |
2061 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) |
2062 | only_standby = true; | |
2063 | ||
2b28bb1b | 2064 | /* Enable PSR in sink */ |
0e0ae652 | 2065 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) |
9d1a1031 JN |
2066 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
2067 | DP_PSR_ENABLE & ~DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b | 2068 | else |
9d1a1031 JN |
2069 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
2070 | DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b RV |
2071 | |
2072 | /* Setup AUX registers */ | |
5ca476f8 VS |
2073 | for (i = 0; i < sizeof(aux_msg); i += 4) |
2074 | I915_WRITE(EDP_PSR_AUX_DATA1(dev) + i, | |
2075 | pack_aux(&aux_msg[i], sizeof(aux_msg) - i)); | |
2076 | ||
18b5992c | 2077 | I915_WRITE(EDP_PSR_AUX_CTL(dev), |
2b28bb1b | 2078 | DP_AUX_CH_CTL_TIME_OUT_400us | |
5ca476f8 | 2079 | (sizeof(aux_msg) << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
2b28bb1b RV |
2080 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | |
2081 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
2082 | } | |
2083 | ||
2084 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
2085 | { | |
0e0ae652 RV |
2086 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
2087 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b RV |
2088 | struct drm_i915_private *dev_priv = dev->dev_private; |
2089 | uint32_t max_sleep_time = 0x1f; | |
2090 | uint32_t idle_frames = 1; | |
2091 | uint32_t val = 0x0; | |
ed8546ac | 2092 | const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES; |
0e0ae652 RV |
2093 | bool only_standby = false; |
2094 | ||
2095 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) | |
2096 | only_standby = true; | |
2b28bb1b | 2097 | |
0e0ae652 | 2098 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) { |
2b28bb1b RV |
2099 | val |= EDP_PSR_LINK_STANDBY; |
2100 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
2101 | val |= EDP_PSR_TP1_TIME_0us; | |
2102 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
82c56254 | 2103 | val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0; |
2b28bb1b RV |
2104 | } else |
2105 | val |= EDP_PSR_LINK_DISABLE; | |
2106 | ||
18b5992c | 2107 | I915_WRITE(EDP_PSR_CTL(dev), val | |
24bd9bf5 | 2108 | (IS_BROADWELL(dev) ? 0 : link_entry_time) | |
2b28bb1b RV |
2109 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | |
2110 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
2111 | EDP_PSR_ENABLE); | |
2112 | } | |
2113 | ||
3f51e471 RV |
2114 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
2115 | { | |
2116 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
2117 | struct drm_device *dev = dig_port->base.base.dev; | |
2118 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2119 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
2120 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3f51e471 | 2121 | |
f0355c4a | 2122 | lockdep_assert_held(&dev_priv->psr.lock); |
f0355c4a DV |
2123 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
2124 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
2125 | ||
a031d709 RV |
2126 | dev_priv->psr.source_ok = false; |
2127 | ||
9ca15301 | 2128 | if (IS_HASWELL(dev) && dig_port->port != PORT_A) { |
3f51e471 | 2129 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); |
3f51e471 RV |
2130 | return false; |
2131 | } | |
2132 | ||
d330a953 | 2133 | if (!i915.enable_psr) { |
105b7c11 | 2134 | DRM_DEBUG_KMS("PSR disable by flag\n"); |
105b7c11 RV |
2135 | return false; |
2136 | } | |
2137 | ||
4c8c7000 RV |
2138 | /* Below limitations aren't valid for Broadwell */ |
2139 | if (IS_BROADWELL(dev)) | |
2140 | goto out; | |
2141 | ||
3f51e471 RV |
2142 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & |
2143 | S3D_ENABLE) { | |
2144 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
3f51e471 RV |
2145 | return false; |
2146 | } | |
2147 | ||
ca73b4f0 | 2148 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { |
3f51e471 | 2149 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); |
3f51e471 RV |
2150 | return false; |
2151 | } | |
2152 | ||
4c8c7000 | 2153 | out: |
a031d709 | 2154 | dev_priv->psr.source_ok = true; |
3f51e471 RV |
2155 | return true; |
2156 | } | |
2157 | ||
3d739d92 | 2158 | static void intel_edp_psr_do_enable(struct intel_dp *intel_dp) |
2b28bb1b | 2159 | { |
7c8f8a70 RV |
2160 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2161 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2162 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2b28bb1b | 2163 | |
3638379c DV |
2164 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); |
2165 | WARN_ON(dev_priv->psr.active); | |
f0355c4a | 2166 | lockdep_assert_held(&dev_priv->psr.lock); |
2b28bb1b | 2167 | |
7ca5a41f | 2168 | /* Enable/Re-enable PSR on the host */ |
2b28bb1b | 2169 | intel_edp_psr_enable_source(intel_dp); |
7c8f8a70 | 2170 | |
7c8f8a70 | 2171 | dev_priv->psr.active = true; |
2b28bb1b RV |
2172 | } |
2173 | ||
3d739d92 RV |
2174 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
2175 | { | |
2176 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
109fc2ad | 2177 | struct drm_i915_private *dev_priv = dev->dev_private; |
3d739d92 | 2178 | |
4704c573 RV |
2179 | if (!HAS_PSR(dev)) { |
2180 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
2181 | return; | |
2182 | } | |
2183 | ||
34eb7579 RV |
2184 | if (!is_edp_psr(intel_dp)) { |
2185 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
2186 | return; | |
2187 | } | |
2188 | ||
f0355c4a | 2189 | mutex_lock(&dev_priv->psr.lock); |
109fc2ad DV |
2190 | if (dev_priv->psr.enabled) { |
2191 | DRM_DEBUG_KMS("PSR already in use\n"); | |
0aa48783 | 2192 | goto unlock; |
109fc2ad DV |
2193 | } |
2194 | ||
0aa48783 RV |
2195 | if (!intel_edp_psr_match_conditions(intel_dp)) |
2196 | goto unlock; | |
2197 | ||
9ca15301 DV |
2198 | dev_priv->psr.busy_frontbuffer_bits = 0; |
2199 | ||
ba80f4d4 | 2200 | intel_edp_psr_setup_vsc(intel_dp); |
16487254 | 2201 | |
ba80f4d4 RV |
2202 | /* Avoid continuous PSR exit by masking memup and hpd */ |
2203 | I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP | | |
2204 | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); | |
16487254 | 2205 | |
7ca5a41f RV |
2206 | /* Enable PSR on the panel */ |
2207 | intel_edp_psr_enable_sink(intel_dp); | |
2208 | ||
0aa48783 RV |
2209 | dev_priv->psr.enabled = intel_dp; |
2210 | unlock: | |
f0355c4a | 2211 | mutex_unlock(&dev_priv->psr.lock); |
3d739d92 RV |
2212 | } |
2213 | ||
2b28bb1b RV |
2214 | void intel_edp_psr_disable(struct intel_dp *intel_dp) |
2215 | { | |
2216 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2217 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2218 | ||
f0355c4a DV |
2219 | mutex_lock(&dev_priv->psr.lock); |
2220 | if (!dev_priv->psr.enabled) { | |
2221 | mutex_unlock(&dev_priv->psr.lock); | |
2222 | return; | |
2223 | } | |
2224 | ||
3638379c DV |
2225 | if (dev_priv->psr.active) { |
2226 | I915_WRITE(EDP_PSR_CTL(dev), | |
2227 | I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE); | |
2228 | ||
2229 | /* Wait till PSR is idle */ | |
2230 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) & | |
2231 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) | |
2232 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
2b28bb1b | 2233 | |
3638379c DV |
2234 | dev_priv->psr.active = false; |
2235 | } else { | |
2236 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); | |
2237 | } | |
7c8f8a70 | 2238 | |
2807cf69 | 2239 | dev_priv->psr.enabled = NULL; |
f0355c4a | 2240 | mutex_unlock(&dev_priv->psr.lock); |
9ca15301 DV |
2241 | |
2242 | cancel_delayed_work_sync(&dev_priv->psr.work); | |
2b28bb1b RV |
2243 | } |
2244 | ||
f02a326e | 2245 | static void intel_edp_psr_work(struct work_struct *work) |
7c8f8a70 RV |
2246 | { |
2247 | struct drm_i915_private *dev_priv = | |
2248 | container_of(work, typeof(*dev_priv), psr.work.work); | |
2807cf69 DV |
2249 | struct intel_dp *intel_dp = dev_priv->psr.enabled; |
2250 | ||
8d7f4fe9 RV |
2251 | /* We have to make sure PSR is ready for re-enable |
2252 | * otherwise it keeps disabled until next full enable/disable cycle. | |
2253 | * PSR might take some time to get fully disabled | |
2254 | * and be ready for re-enable. | |
2255 | */ | |
2256 | if (wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev_priv->dev)) & | |
2257 | EDP_PSR_STATUS_STATE_MASK) == 0, 50)) { | |
2258 | DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n"); | |
2259 | return; | |
2260 | } | |
2261 | ||
f0355c4a DV |
2262 | mutex_lock(&dev_priv->psr.lock); |
2263 | intel_dp = dev_priv->psr.enabled; | |
2264 | ||
2807cf69 | 2265 | if (!intel_dp) |
f0355c4a | 2266 | goto unlock; |
2807cf69 | 2267 | |
9ca15301 DV |
2268 | /* |
2269 | * The delayed work can race with an invalidate hence we need to | |
2270 | * recheck. Since psr_flush first clears this and then reschedules we | |
2271 | * won't ever miss a flush when bailing out here. | |
2272 | */ | |
2273 | if (dev_priv->psr.busy_frontbuffer_bits) | |
2274 | goto unlock; | |
2275 | ||
2276 | intel_edp_psr_do_enable(intel_dp); | |
f0355c4a DV |
2277 | unlock: |
2278 | mutex_unlock(&dev_priv->psr.lock); | |
3d739d92 RV |
2279 | } |
2280 | ||
9ca15301 | 2281 | static void intel_edp_psr_do_exit(struct drm_device *dev) |
7c8f8a70 RV |
2282 | { |
2283 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2284 | ||
3638379c DV |
2285 | if (dev_priv->psr.active) { |
2286 | u32 val = I915_READ(EDP_PSR_CTL(dev)); | |
2287 | ||
2288 | WARN_ON(!(val & EDP_PSR_ENABLE)); | |
2289 | ||
2290 | I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE); | |
2291 | ||
2292 | dev_priv->psr.active = false; | |
2293 | } | |
7c8f8a70 | 2294 | |
9ca15301 DV |
2295 | } |
2296 | ||
2297 | void intel_edp_psr_invalidate(struct drm_device *dev, | |
2298 | unsigned frontbuffer_bits) | |
2299 | { | |
2300 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2301 | struct drm_crtc *crtc; | |
2302 | enum pipe pipe; | |
2303 | ||
9ca15301 DV |
2304 | mutex_lock(&dev_priv->psr.lock); |
2305 | if (!dev_priv->psr.enabled) { | |
2306 | mutex_unlock(&dev_priv->psr.lock); | |
2307 | return; | |
2308 | } | |
2309 | ||
2310 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
2311 | pipe = to_intel_crtc(crtc)->pipe; | |
2312 | ||
2313 | intel_edp_psr_do_exit(dev); | |
2314 | ||
2315 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
2316 | ||
2317 | dev_priv->psr.busy_frontbuffer_bits |= frontbuffer_bits; | |
2318 | mutex_unlock(&dev_priv->psr.lock); | |
2319 | } | |
2320 | ||
2321 | void intel_edp_psr_flush(struct drm_device *dev, | |
2322 | unsigned frontbuffer_bits) | |
2323 | { | |
2324 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2325 | struct drm_crtc *crtc; | |
2326 | enum pipe pipe; | |
2327 | ||
9ca15301 DV |
2328 | mutex_lock(&dev_priv->psr.lock); |
2329 | if (!dev_priv->psr.enabled) { | |
2330 | mutex_unlock(&dev_priv->psr.lock); | |
2331 | return; | |
2332 | } | |
2333 | ||
2334 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
2335 | pipe = to_intel_crtc(crtc)->pipe; | |
2336 | dev_priv->psr.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
2337 | ||
2338 | /* | |
2339 | * On Haswell sprite plane updates don't result in a psr invalidating | |
2340 | * signal in the hardware. Which means we need to manually fake this in | |
2341 | * software for all flushes, not just when we've seen a preceding | |
2342 | * invalidation through frontbuffer rendering. | |
2343 | */ | |
2344 | if (IS_HASWELL(dev) && | |
2345 | (frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe))) | |
2346 | intel_edp_psr_do_exit(dev); | |
2347 | ||
2348 | if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits) | |
2349 | schedule_delayed_work(&dev_priv->psr.work, | |
2350 | msecs_to_jiffies(100)); | |
f0355c4a | 2351 | mutex_unlock(&dev_priv->psr.lock); |
7c8f8a70 RV |
2352 | } |
2353 | ||
2354 | void intel_edp_psr_init(struct drm_device *dev) | |
2355 | { | |
2356 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2357 | ||
7c8f8a70 | 2358 | INIT_DELAYED_WORK(&dev_priv->psr.work, intel_edp_psr_work); |
f0355c4a | 2359 | mutex_init(&dev_priv->psr.lock); |
7c8f8a70 RV |
2360 | } |
2361 | ||
e8cb4558 | 2362 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2363 | { |
e8cb4558 | 2364 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2365 | struct drm_device *dev = encoder->base.dev; |
6cb49835 DV |
2366 | |
2367 | /* Make sure the panel is off before trying to change the mode. But also | |
2368 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2369 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2370 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2371 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2372 | intel_edp_panel_off(intel_dp); |
3739850b | 2373 | |
08aff3fe VS |
2374 | /* disable the port before the pipe on g4x */ |
2375 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2376 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2377 | } |
2378 | ||
08aff3fe | 2379 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2380 | { |
2bd2ad64 | 2381 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2382 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2383 | |
49277c31 | 2384 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2385 | if (port == PORT_A) |
2386 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2387 | } |
2388 | ||
2389 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2390 | { | |
2391 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2392 | ||
2393 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2394 | } |
2395 | ||
580d3811 VS |
2396 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2397 | { | |
2398 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2399 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2400 | struct drm_device *dev = encoder->base.dev; | |
2401 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2402 | struct intel_crtc *intel_crtc = | |
2403 | to_intel_crtc(encoder->base.crtc); | |
2404 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2405 | enum pipe pipe = intel_crtc->pipe; | |
2406 | u32 val; | |
2407 | ||
2408 | intel_dp_link_down(intel_dp); | |
2409 | ||
2410 | mutex_lock(&dev_priv->dpio_lock); | |
2411 | ||
2412 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2413 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2414 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2415 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2416 | |
97fd4d5c VS |
2417 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2418 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2419 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2420 | ||
2421 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2422 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2423 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2424 | ||
2425 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2426 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2427 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2428 | |
2429 | mutex_unlock(&dev_priv->dpio_lock); | |
2430 | } | |
2431 | ||
7b13b58a VS |
2432 | static void |
2433 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2434 | uint32_t *DP, | |
2435 | uint8_t dp_train_pat) | |
2436 | { | |
2437 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2438 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2439 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2440 | enum port port = intel_dig_port->port; | |
2441 | ||
2442 | if (HAS_DDI(dev)) { | |
2443 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2444 | ||
2445 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2446 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2447 | else | |
2448 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2449 | ||
2450 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2451 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2452 | case DP_TRAINING_PATTERN_DISABLE: | |
2453 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2454 | ||
2455 | break; | |
2456 | case DP_TRAINING_PATTERN_1: | |
2457 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2458 | break; | |
2459 | case DP_TRAINING_PATTERN_2: | |
2460 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2461 | break; | |
2462 | case DP_TRAINING_PATTERN_3: | |
2463 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2464 | break; | |
2465 | } | |
2466 | I915_WRITE(DP_TP_CTL(port), temp); | |
2467 | ||
2468 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2469 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2470 | ||
2471 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2472 | case DP_TRAINING_PATTERN_DISABLE: | |
2473 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2474 | break; | |
2475 | case DP_TRAINING_PATTERN_1: | |
2476 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2477 | break; | |
2478 | case DP_TRAINING_PATTERN_2: | |
2479 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2480 | break; | |
2481 | case DP_TRAINING_PATTERN_3: | |
2482 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2483 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2484 | break; | |
2485 | } | |
2486 | ||
2487 | } else { | |
2488 | if (IS_CHERRYVIEW(dev)) | |
2489 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2490 | else | |
2491 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2492 | ||
2493 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2494 | case DP_TRAINING_PATTERN_DISABLE: | |
2495 | *DP |= DP_LINK_TRAIN_OFF; | |
2496 | break; | |
2497 | case DP_TRAINING_PATTERN_1: | |
2498 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2499 | break; | |
2500 | case DP_TRAINING_PATTERN_2: | |
2501 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2502 | break; | |
2503 | case DP_TRAINING_PATTERN_3: | |
2504 | if (IS_CHERRYVIEW(dev)) { | |
2505 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2506 | } else { | |
2507 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2508 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2509 | } | |
2510 | break; | |
2511 | } | |
2512 | } | |
2513 | } | |
2514 | ||
2515 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2516 | { | |
2517 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2518 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2519 | ||
2520 | intel_dp->DP |= DP_PORT_EN; | |
2521 | ||
2522 | /* enable with pattern 1 (as per spec) */ | |
2523 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2524 | DP_TRAINING_PATTERN_1); | |
2525 | ||
2526 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2527 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2528 | } |
2529 | ||
e8cb4558 | 2530 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2531 | { |
e8cb4558 DV |
2532 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2533 | struct drm_device *dev = encoder->base.dev; | |
2534 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2535 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 2536 | |
0c33d8d7 DV |
2537 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2538 | return; | |
5d613501 | 2539 | |
093e3f13 VS |
2540 | pps_lock(intel_dp); |
2541 | ||
2542 | if (IS_VALLEYVIEW(dev)) | |
2543 | vlv_init_panel_power_sequencer(intel_dp); | |
2544 | ||
7b13b58a | 2545 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2546 | |
2547 | edp_panel_vdd_on(intel_dp); | |
2548 | edp_panel_on(intel_dp); | |
2549 | edp_panel_vdd_off(intel_dp, true); | |
2550 | ||
2551 | pps_unlock(intel_dp); | |
2552 | ||
61234fa5 VS |
2553 | if (IS_VALLEYVIEW(dev)) |
2554 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp)); | |
2555 | ||
f01eca2e | 2556 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2557 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2558 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2559 | intel_dp_stop_link_train(intel_dp); |
ab1f90f9 | 2560 | } |
89b667f8 | 2561 | |
ecff4f3b JN |
2562 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2563 | { | |
828f5c6e JN |
2564 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2565 | ||
ecff4f3b | 2566 | intel_enable_dp(encoder); |
4be73780 | 2567 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2568 | } |
89b667f8 | 2569 | |
ab1f90f9 JN |
2570 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2571 | { | |
828f5c6e JN |
2572 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2573 | ||
4be73780 | 2574 | intel_edp_backlight_on(intel_dp); |
d240f20f JB |
2575 | } |
2576 | ||
ecff4f3b | 2577 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2578 | { |
2579 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2580 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2581 | ||
8ac33ed3 DV |
2582 | intel_dp_prepare(encoder); |
2583 | ||
d41f1efb DV |
2584 | /* Only ilk+ has port A */ |
2585 | if (dport->port == PORT_A) { | |
2586 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2587 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2588 | } |
ab1f90f9 JN |
2589 | } |
2590 | ||
a4a5d2f8 VS |
2591 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2592 | enum pipe pipe) | |
2593 | { | |
2594 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2595 | struct intel_encoder *encoder; | |
2596 | ||
2597 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2598 | ||
2599 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
2600 | base.head) { | |
2601 | struct intel_dp *intel_dp; | |
773538e8 | 2602 | enum port port; |
a4a5d2f8 VS |
2603 | |
2604 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2605 | continue; | |
2606 | ||
2607 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2608 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2609 | |
2610 | if (intel_dp->pps_pipe != pipe) | |
2611 | continue; | |
2612 | ||
2613 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2614 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 VS |
2615 | |
2616 | /* make sure vdd is off before we steal it */ | |
2617 | edp_panel_vdd_off_sync(intel_dp); | |
2618 | ||
2619 | intel_dp->pps_pipe = INVALID_PIPE; | |
2620 | } | |
2621 | } | |
2622 | ||
2623 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2624 | { | |
2625 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2626 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2627 | struct drm_device *dev = encoder->base.dev; | |
2628 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2629 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2630 | |
2631 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2632 | ||
093e3f13 VS |
2633 | if (!is_edp(intel_dp)) |
2634 | return; | |
2635 | ||
a4a5d2f8 VS |
2636 | if (intel_dp->pps_pipe == crtc->pipe) |
2637 | return; | |
2638 | ||
2639 | /* | |
2640 | * If another power sequencer was being used on this | |
2641 | * port previously make sure to turn off vdd there while | |
2642 | * we still have control of it. | |
2643 | */ | |
2644 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
2645 | edp_panel_vdd_off_sync(intel_dp); | |
2646 | ||
2647 | /* | |
2648 | * We may be stealing the power | |
2649 | * sequencer from another port. | |
2650 | */ | |
2651 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2652 | ||
2653 | /* now it's all ours */ | |
2654 | intel_dp->pps_pipe = crtc->pipe; | |
2655 | ||
2656 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2657 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2658 | ||
2659 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2660 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2661 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2662 | } |
2663 | ||
ab1f90f9 | 2664 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2665 | { |
2bd2ad64 | 2666 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2667 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2668 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2669 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2670 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2671 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2672 | int pipe = intel_crtc->pipe; |
2673 | u32 val; | |
a4fc5ed6 | 2674 | |
ab1f90f9 | 2675 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2676 | |
ab3c759a | 2677 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2678 | val = 0; |
2679 | if (pipe) | |
2680 | val |= (1<<21); | |
2681 | else | |
2682 | val &= ~(1<<21); | |
2683 | val |= 0x001000c4; | |
ab3c759a CML |
2684 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2685 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2686 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2687 | |
ab1f90f9 JN |
2688 | mutex_unlock(&dev_priv->dpio_lock); |
2689 | ||
2690 | intel_enable_dp(encoder); | |
89b667f8 JB |
2691 | } |
2692 | ||
ecff4f3b | 2693 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2694 | { |
2695 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2696 | struct drm_device *dev = encoder->base.dev; | |
2697 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2698 | struct intel_crtc *intel_crtc = |
2699 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2700 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2701 | int pipe = intel_crtc->pipe; |
89b667f8 | 2702 | |
8ac33ed3 DV |
2703 | intel_dp_prepare(encoder); |
2704 | ||
89b667f8 | 2705 | /* Program Tx lane resets to default */ |
0980a60f | 2706 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2707 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2708 | DPIO_PCS_TX_LANE2_RESET | |
2709 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2710 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2711 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2712 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2713 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2714 | DPIO_PCS_CLK_SOFT_RESET); | |
2715 | ||
2716 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2717 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2718 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2719 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2720 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2721 | } |
2722 | ||
e4a1d846 CML |
2723 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2724 | { | |
2725 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2726 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2727 | struct drm_device *dev = encoder->base.dev; | |
2728 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2729 | struct intel_crtc *intel_crtc = |
2730 | to_intel_crtc(encoder->base.crtc); | |
2731 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2732 | int pipe = intel_crtc->pipe; | |
2733 | int data, i; | |
949c1d43 | 2734 | u32 val; |
e4a1d846 | 2735 | |
e4a1d846 | 2736 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 | 2737 | |
570e2a74 VS |
2738 | /* allow hardware to manage TX FIFO reset source */ |
2739 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2740 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2741 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2742 | ||
2743 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2744 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2745 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2746 | ||
949c1d43 | 2747 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2748 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2749 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2750 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2751 | ||
2752 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2753 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2754 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2755 | ||
2756 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2757 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2758 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2759 | |
97fd4d5c | 2760 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2761 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2762 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2763 | |
2764 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2765 | for (i = 0; i < 4; i++) { |
2766 | /* Set the latency optimal bit */ | |
2767 | data = (i == 1) ? 0x0 : 0x6; | |
2768 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2769 | data << DPIO_FRC_LATENCY_SHFIT); | |
2770 | ||
2771 | /* Set the upar bit */ | |
2772 | data = (i == 1) ? 0x0 : 0x1; | |
2773 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2774 | data << DPIO_UPAR_SHIFT); | |
2775 | } | |
2776 | ||
2777 | /* Data lane stagger programming */ | |
2778 | /* FIXME: Fix up value only after power analysis */ | |
2779 | ||
2780 | mutex_unlock(&dev_priv->dpio_lock); | |
2781 | ||
e4a1d846 | 2782 | intel_enable_dp(encoder); |
e4a1d846 CML |
2783 | } |
2784 | ||
9197c88b VS |
2785 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2786 | { | |
2787 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2788 | struct drm_device *dev = encoder->base.dev; | |
2789 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2790 | struct intel_crtc *intel_crtc = | |
2791 | to_intel_crtc(encoder->base.crtc); | |
2792 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2793 | enum pipe pipe = intel_crtc->pipe; | |
2794 | u32 val; | |
2795 | ||
625695f8 VS |
2796 | intel_dp_prepare(encoder); |
2797 | ||
9197c88b VS |
2798 | mutex_lock(&dev_priv->dpio_lock); |
2799 | ||
b9e5ac3c VS |
2800 | /* program left/right clock distribution */ |
2801 | if (pipe != PIPE_B) { | |
2802 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2803 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2804 | if (ch == DPIO_CH0) | |
2805 | val |= CHV_BUFLEFTENA1_FORCE; | |
2806 | if (ch == DPIO_CH1) | |
2807 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2808 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2809 | } else { | |
2810 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2811 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2812 | if (ch == DPIO_CH0) | |
2813 | val |= CHV_BUFLEFTENA2_FORCE; | |
2814 | if (ch == DPIO_CH1) | |
2815 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2816 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2817 | } | |
2818 | ||
9197c88b VS |
2819 | /* program clock channel usage */ |
2820 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2821 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2822 | if (pipe != PIPE_B) | |
2823 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2824 | else | |
2825 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2826 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2827 | ||
2828 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2829 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2830 | if (pipe != PIPE_B) | |
2831 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2832 | else | |
2833 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2834 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2835 | ||
2836 | /* | |
2837 | * This a a bit weird since generally CL | |
2838 | * matches the pipe, but here we need to | |
2839 | * pick the CL based on the port. | |
2840 | */ | |
2841 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2842 | if (pipe != PIPE_B) | |
2843 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2844 | else | |
2845 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2846 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2847 | ||
2848 | mutex_unlock(&dev_priv->dpio_lock); | |
2849 | } | |
2850 | ||
a4fc5ed6 | 2851 | /* |
df0c237d JB |
2852 | * Native read with retry for link status and receiver capability reads for |
2853 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2854 | * |
2855 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2856 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2857 | */ |
9d1a1031 JN |
2858 | static ssize_t |
2859 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2860 | void *buffer, size_t size) | |
a4fc5ed6 | 2861 | { |
9d1a1031 JN |
2862 | ssize_t ret; |
2863 | int i; | |
61da5fab | 2864 | |
61da5fab | 2865 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2866 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2867 | if (ret == size) | |
2868 | return ret; | |
61da5fab JB |
2869 | msleep(1); |
2870 | } | |
a4fc5ed6 | 2871 | |
9d1a1031 | 2872 | return ret; |
a4fc5ed6 KP |
2873 | } |
2874 | ||
2875 | /* | |
2876 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2877 | * link status information | |
2878 | */ | |
2879 | static bool | |
93f62dad | 2880 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2881 | { |
9d1a1031 JN |
2882 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2883 | DP_LANE0_1_STATUS, | |
2884 | link_status, | |
2885 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2886 | } |
2887 | ||
1100244e | 2888 | /* These are source-specific values. */ |
a4fc5ed6 | 2889 | static uint8_t |
1a2eb460 | 2890 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2891 | { |
30add22d | 2892 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2893 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2894 | |
5a9d1f1a DL |
2895 | if (INTEL_INFO(dev)->gen >= 9) |
2896 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; | |
2897 | else if (IS_VALLEYVIEW(dev)) | |
bd60018a | 2898 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2899 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2900 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2901 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2902 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2903 | else |
bd60018a | 2904 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2905 | } |
2906 | ||
2907 | static uint8_t | |
2908 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2909 | { | |
30add22d | 2910 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2911 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2912 | |
5a9d1f1a DL |
2913 | if (INTEL_INFO(dev)->gen >= 9) { |
2914 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2915 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
2916 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2917 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2918 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2919 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2920 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2921 | default: | |
2922 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
2923 | } | |
2924 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 2925 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2926 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2927 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2928 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2929 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2930 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2931 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2932 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2933 | default: |
bd60018a | 2934 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2935 | } |
e2fa6fba P |
2936 | } else if (IS_VALLEYVIEW(dev)) { |
2937 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2938 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2939 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2940 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2941 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2942 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2943 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2944 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2945 | default: |
bd60018a | 2946 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2947 | } |
bc7d38a4 | 2948 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2949 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2950 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2951 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2952 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2953 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2954 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2955 | default: |
bd60018a | 2956 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2957 | } |
2958 | } else { | |
2959 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2960 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2961 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2962 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2963 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2964 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2965 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2966 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2967 | default: |
bd60018a | 2968 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2969 | } |
a4fc5ed6 KP |
2970 | } |
2971 | } | |
2972 | ||
e2fa6fba P |
2973 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2974 | { | |
2975 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2976 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2977 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2978 | struct intel_crtc *intel_crtc = |
2979 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2980 | unsigned long demph_reg_value, preemph_reg_value, |
2981 | uniqtranscale_reg_value; | |
2982 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2983 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2984 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2985 | |
2986 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2987 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2988 | preemph_reg_value = 0x0004000; |
2989 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2990 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2991 | demph_reg_value = 0x2B405555; |
2992 | uniqtranscale_reg_value = 0x552AB83A; | |
2993 | break; | |
bd60018a | 2994 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2995 | demph_reg_value = 0x2B404040; |
2996 | uniqtranscale_reg_value = 0x5548B83A; | |
2997 | break; | |
bd60018a | 2998 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2999 | demph_reg_value = 0x2B245555; |
3000 | uniqtranscale_reg_value = 0x5560B83A; | |
3001 | break; | |
bd60018a | 3002 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
3003 | demph_reg_value = 0x2B405555; |
3004 | uniqtranscale_reg_value = 0x5598DA3A; | |
3005 | break; | |
3006 | default: | |
3007 | return 0; | |
3008 | } | |
3009 | break; | |
bd60018a | 3010 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
3011 | preemph_reg_value = 0x0002000; |
3012 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3013 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3014 | demph_reg_value = 0x2B404040; |
3015 | uniqtranscale_reg_value = 0x5552B83A; | |
3016 | break; | |
bd60018a | 3017 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3018 | demph_reg_value = 0x2B404848; |
3019 | uniqtranscale_reg_value = 0x5580B83A; | |
3020 | break; | |
bd60018a | 3021 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3022 | demph_reg_value = 0x2B404040; |
3023 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3024 | break; | |
3025 | default: | |
3026 | return 0; | |
3027 | } | |
3028 | break; | |
bd60018a | 3029 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
3030 | preemph_reg_value = 0x0000000; |
3031 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3032 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3033 | demph_reg_value = 0x2B305555; |
3034 | uniqtranscale_reg_value = 0x5570B83A; | |
3035 | break; | |
bd60018a | 3036 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3037 | demph_reg_value = 0x2B2B4040; |
3038 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3039 | break; | |
3040 | default: | |
3041 | return 0; | |
3042 | } | |
3043 | break; | |
bd60018a | 3044 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
3045 | preemph_reg_value = 0x0006000; |
3046 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3047 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3048 | demph_reg_value = 0x1B405555; |
3049 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3050 | break; | |
3051 | default: | |
3052 | return 0; | |
3053 | } | |
3054 | break; | |
3055 | default: | |
3056 | return 0; | |
3057 | } | |
3058 | ||
0980a60f | 3059 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
3060 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3061 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
3062 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3063 | uniqtranscale_reg_value); |
ab3c759a CML |
3064 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3065 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3066 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3067 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3068 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3069 | |
3070 | return 0; | |
3071 | } | |
3072 | ||
e4a1d846 CML |
3073 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
3074 | { | |
3075 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3076 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3077 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3078 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3079 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3080 | uint8_t train_set = intel_dp->train_set[0]; |
3081 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3082 | enum pipe pipe = intel_crtc->pipe; |
3083 | int i; | |
e4a1d846 CML |
3084 | |
3085 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3086 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3087 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3088 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3089 | deemph_reg_value = 128; |
3090 | margin_reg_value = 52; | |
3091 | break; | |
bd60018a | 3092 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3093 | deemph_reg_value = 128; |
3094 | margin_reg_value = 77; | |
3095 | break; | |
bd60018a | 3096 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3097 | deemph_reg_value = 128; |
3098 | margin_reg_value = 102; | |
3099 | break; | |
bd60018a | 3100 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3101 | deemph_reg_value = 128; |
3102 | margin_reg_value = 154; | |
3103 | /* FIXME extra to set for 1200 */ | |
3104 | break; | |
3105 | default: | |
3106 | return 0; | |
3107 | } | |
3108 | break; | |
bd60018a | 3109 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3110 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3111 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3112 | deemph_reg_value = 85; |
3113 | margin_reg_value = 78; | |
3114 | break; | |
bd60018a | 3115 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3116 | deemph_reg_value = 85; |
3117 | margin_reg_value = 116; | |
3118 | break; | |
bd60018a | 3119 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3120 | deemph_reg_value = 85; |
3121 | margin_reg_value = 154; | |
3122 | break; | |
3123 | default: | |
3124 | return 0; | |
3125 | } | |
3126 | break; | |
bd60018a | 3127 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3128 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3129 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3130 | deemph_reg_value = 64; |
3131 | margin_reg_value = 104; | |
3132 | break; | |
bd60018a | 3133 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3134 | deemph_reg_value = 64; |
3135 | margin_reg_value = 154; | |
3136 | break; | |
3137 | default: | |
3138 | return 0; | |
3139 | } | |
3140 | break; | |
bd60018a | 3141 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3142 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3143 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3144 | deemph_reg_value = 43; |
3145 | margin_reg_value = 154; | |
3146 | break; | |
3147 | default: | |
3148 | return 0; | |
3149 | } | |
3150 | break; | |
3151 | default: | |
3152 | return 0; | |
3153 | } | |
3154 | ||
3155 | mutex_lock(&dev_priv->dpio_lock); | |
3156 | ||
3157 | /* Clear calc init */ | |
1966e59e VS |
3158 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3159 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3160 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3161 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3162 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3163 | ||
3164 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3165 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3166 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3167 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3168 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3169 | |
a02ef3c7 VS |
3170 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3171 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3172 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3173 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3174 | ||
3175 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3176 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3177 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3178 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3179 | ||
e4a1d846 | 3180 | /* Program swing deemph */ |
f72df8db VS |
3181 | for (i = 0; i < 4; i++) { |
3182 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3183 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3184 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3185 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3186 | } | |
e4a1d846 CML |
3187 | |
3188 | /* Program swing margin */ | |
f72df8db VS |
3189 | for (i = 0; i < 4; i++) { |
3190 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3191 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3192 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3193 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3194 | } | |
e4a1d846 CML |
3195 | |
3196 | /* Disable unique transition scale */ | |
f72df8db VS |
3197 | for (i = 0; i < 4; i++) { |
3198 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3199 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3200 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3201 | } | |
e4a1d846 CML |
3202 | |
3203 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3204 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3205 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3206 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3207 | |
3208 | /* | |
3209 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3210 | * for ch1. Might be a typo in the doc. | |
3211 | * For now, for this unique transition scale selection, set bit | |
3212 | * 27 for ch0 and ch1. | |
3213 | */ | |
f72df8db VS |
3214 | for (i = 0; i < 4; i++) { |
3215 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3216 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3217 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3218 | } | |
e4a1d846 | 3219 | |
f72df8db VS |
3220 | for (i = 0; i < 4; i++) { |
3221 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3222 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3223 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3224 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3225 | } | |
e4a1d846 CML |
3226 | } |
3227 | ||
3228 | /* Start swing calculation */ | |
1966e59e VS |
3229 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3230 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3231 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3232 | ||
3233 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3234 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3235 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3236 | |
3237 | /* LRC Bypass */ | |
3238 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3239 | val |= DPIO_LRC_BYPASS; | |
3240 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3241 | ||
3242 | mutex_unlock(&dev_priv->dpio_lock); | |
3243 | ||
3244 | return 0; | |
3245 | } | |
3246 | ||
a4fc5ed6 | 3247 | static void |
0301b3ac JN |
3248 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3249 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3250 | { |
3251 | uint8_t v = 0; | |
3252 | uint8_t p = 0; | |
3253 | int lane; | |
1a2eb460 KP |
3254 | uint8_t voltage_max; |
3255 | uint8_t preemph_max; | |
a4fc5ed6 | 3256 | |
33a34e4e | 3257 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3258 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3259 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3260 | |
3261 | if (this_v > v) | |
3262 | v = this_v; | |
3263 | if (this_p > p) | |
3264 | p = this_p; | |
3265 | } | |
3266 | ||
1a2eb460 | 3267 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3268 | if (v >= voltage_max) |
3269 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3270 | |
1a2eb460 KP |
3271 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3272 | if (p >= preemph_max) | |
3273 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3274 | |
3275 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3276 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3277 | } |
3278 | ||
3279 | static uint32_t | |
f0a3424e | 3280 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3281 | { |
3cf2efb1 | 3282 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3283 | |
3cf2efb1 | 3284 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3285 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3286 | default: |
3287 | signal_levels |= DP_VOLTAGE_0_4; | |
3288 | break; | |
bd60018a | 3289 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3290 | signal_levels |= DP_VOLTAGE_0_6; |
3291 | break; | |
bd60018a | 3292 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3293 | signal_levels |= DP_VOLTAGE_0_8; |
3294 | break; | |
bd60018a | 3295 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3296 | signal_levels |= DP_VOLTAGE_1_2; |
3297 | break; | |
3298 | } | |
3cf2efb1 | 3299 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3300 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3301 | default: |
3302 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3303 | break; | |
bd60018a | 3304 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3305 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3306 | break; | |
bd60018a | 3307 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3308 | signal_levels |= DP_PRE_EMPHASIS_6; |
3309 | break; | |
bd60018a | 3310 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3311 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3312 | break; | |
3313 | } | |
3314 | return signal_levels; | |
3315 | } | |
3316 | ||
e3421a18 ZW |
3317 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3318 | static uint32_t | |
3319 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
3320 | { | |
3c5a62b5 YL |
3321 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3322 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3323 | switch (signal_levels) { | |
bd60018a SJ |
3324 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3325 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3326 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3327 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3328 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3329 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3330 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3331 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3332 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3333 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3334 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3335 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3336 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3337 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3338 | default: |
3c5a62b5 YL |
3339 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3340 | "0x%x\n", signal_levels); | |
3341 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3342 | } |
3343 | } | |
3344 | ||
1a2eb460 KP |
3345 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3346 | static uint32_t | |
3347 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
3348 | { | |
3349 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3350 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3351 | switch (signal_levels) { | |
bd60018a | 3352 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3353 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3354 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3355 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3356 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3357 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3358 | ||
bd60018a | 3359 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3360 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3361 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3362 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3363 | ||
bd60018a | 3364 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3365 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3366 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3367 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3368 | ||
3369 | default: | |
3370 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3371 | "0x%x\n", signal_levels); | |
3372 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3373 | } | |
3374 | } | |
3375 | ||
d6c0d722 PZ |
3376 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3377 | static uint32_t | |
f0a3424e | 3378 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3379 | { |
d6c0d722 PZ |
3380 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3381 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3382 | switch (signal_levels) { | |
bd60018a | 3383 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3384 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3385 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3386 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3387 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3388 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3389 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3390 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3391 | |
bd60018a | 3392 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3393 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3394 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3395 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3396 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3397 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3398 | |
bd60018a | 3399 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3400 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3401 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3402 | return DDI_BUF_TRANS_SELECT(8); |
d6c0d722 PZ |
3403 | default: |
3404 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3405 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3406 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3407 | } |
a4fc5ed6 KP |
3408 | } |
3409 | ||
f0a3424e PZ |
3410 | /* Properly updates "DP" with the correct signal levels. */ |
3411 | static void | |
3412 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3413 | { | |
3414 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3415 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3416 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3417 | uint32_t signal_levels, mask; | |
3418 | uint8_t train_set = intel_dp->train_set[0]; | |
3419 | ||
5a9d1f1a | 3420 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
f0a3424e PZ |
3421 | signal_levels = intel_hsw_signal_levels(train_set); |
3422 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
3423 | } else if (IS_CHERRYVIEW(dev)) { |
3424 | signal_levels = intel_chv_signal_levels(intel_dp); | |
3425 | mask = 0; | |
e2fa6fba P |
3426 | } else if (IS_VALLEYVIEW(dev)) { |
3427 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
3428 | mask = 0; | |
bc7d38a4 | 3429 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
3430 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
3431 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 3432 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
3433 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
3434 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
3435 | } else { | |
3436 | signal_levels = intel_gen4_signal_levels(train_set); | |
3437 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
3438 | } | |
3439 | ||
3440 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3441 | ||
3442 | *DP = (*DP & ~mask) | signal_levels; | |
3443 | } | |
3444 | ||
a4fc5ed6 | 3445 | static bool |
ea5b213a | 3446 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3447 | uint32_t *DP, |
58e10eb9 | 3448 | uint8_t dp_train_pat) |
a4fc5ed6 | 3449 | { |
174edf1f PZ |
3450 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3451 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3452 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3453 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3454 | int ret, len; | |
a4fc5ed6 | 3455 | |
7b13b58a | 3456 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3457 | |
70aff66c | 3458 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3459 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3460 | |
2cdfe6c8 JN |
3461 | buf[0] = dp_train_pat; |
3462 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3463 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3464 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3465 | len = 1; | |
3466 | } else { | |
3467 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3468 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3469 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3470 | } |
a4fc5ed6 | 3471 | |
9d1a1031 JN |
3472 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3473 | buf, len); | |
2cdfe6c8 JN |
3474 | |
3475 | return ret == len; | |
a4fc5ed6 KP |
3476 | } |
3477 | ||
70aff66c JN |
3478 | static bool |
3479 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3480 | uint8_t dp_train_pat) | |
3481 | { | |
953d22e8 | 3482 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3483 | intel_dp_set_signal_levels(intel_dp, DP); |
3484 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3485 | } | |
3486 | ||
3487 | static bool | |
3488 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3489 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3490 | { |
3491 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3492 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3493 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3494 | int ret; | |
3495 | ||
3496 | intel_get_adjust_train(intel_dp, link_status); | |
3497 | intel_dp_set_signal_levels(intel_dp, DP); | |
3498 | ||
3499 | I915_WRITE(intel_dp->output_reg, *DP); | |
3500 | POSTING_READ(intel_dp->output_reg); | |
3501 | ||
9d1a1031 JN |
3502 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3503 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3504 | |
3505 | return ret == intel_dp->lane_count; | |
3506 | } | |
3507 | ||
3ab9c637 ID |
3508 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3509 | { | |
3510 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3511 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3512 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3513 | enum port port = intel_dig_port->port; | |
3514 | uint32_t val; | |
3515 | ||
3516 | if (!HAS_DDI(dev)) | |
3517 | return; | |
3518 | ||
3519 | val = I915_READ(DP_TP_CTL(port)); | |
3520 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3521 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3522 | I915_WRITE(DP_TP_CTL(port), val); | |
3523 | ||
3524 | /* | |
3525 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3526 | * we need to set idle transmission mode is to work around a HW issue | |
3527 | * where we enable the pipe while not in idle link-training mode. | |
3528 | * In this case there is requirement to wait for a minimum number of | |
3529 | * idle patterns to be sent. | |
3530 | */ | |
3531 | if (port == PORT_A) | |
3532 | return; | |
3533 | ||
3534 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3535 | 1)) | |
3536 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3537 | } | |
3538 | ||
33a34e4e | 3539 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3540 | void |
33a34e4e | 3541 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3542 | { |
da63a9f2 | 3543 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3544 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3545 | int i; |
3546 | uint8_t voltage; | |
cdb0e95b | 3547 | int voltage_tries, loop_tries; |
ea5b213a | 3548 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3549 | uint8_t link_config[2]; |
a4fc5ed6 | 3550 | |
affa9354 | 3551 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3552 | intel_ddi_prepare_link_retrain(encoder); |
3553 | ||
3cf2efb1 | 3554 | /* Write the link configuration data */ |
6aba5b6c JN |
3555 | link_config[0] = intel_dp->link_bw; |
3556 | link_config[1] = intel_dp->lane_count; | |
3557 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3558 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3559 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
6aba5b6c JN |
3560 | |
3561 | link_config[0] = 0; | |
3562 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3563 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3564 | |
3565 | DP |= DP_PORT_EN; | |
1a2eb460 | 3566 | |
70aff66c JN |
3567 | /* clock recovery */ |
3568 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3569 | DP_TRAINING_PATTERN_1 | | |
3570 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3571 | DRM_ERROR("failed to enable link training\n"); | |
3572 | return; | |
3573 | } | |
3574 | ||
a4fc5ed6 | 3575 | voltage = 0xff; |
cdb0e95b KP |
3576 | voltage_tries = 0; |
3577 | loop_tries = 0; | |
a4fc5ed6 | 3578 | for (;;) { |
70aff66c | 3579 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3580 | |
a7c9655f | 3581 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3582 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3583 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3584 | break; |
93f62dad | 3585 | } |
a4fc5ed6 | 3586 | |
01916270 | 3587 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3588 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3589 | break; |
3590 | } | |
3591 | ||
3592 | /* Check to see if we've tried the max voltage */ | |
3593 | for (i = 0; i < intel_dp->lane_count; i++) | |
3594 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3595 | break; |
3b4f819d | 3596 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3597 | ++loop_tries; |
3598 | if (loop_tries == 5) { | |
3def84b3 | 3599 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3600 | break; |
3601 | } | |
70aff66c JN |
3602 | intel_dp_reset_link_train(intel_dp, &DP, |
3603 | DP_TRAINING_PATTERN_1 | | |
3604 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3605 | voltage_tries = 0; |
3606 | continue; | |
3607 | } | |
a4fc5ed6 | 3608 | |
3cf2efb1 | 3609 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3610 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3611 | ++voltage_tries; |
b06fbda3 | 3612 | if (voltage_tries == 5) { |
3def84b3 | 3613 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3614 | break; |
3615 | } | |
3616 | } else | |
3617 | voltage_tries = 0; | |
3618 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3619 | |
70aff66c JN |
3620 | /* Update training set as requested by target */ |
3621 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3622 | DRM_ERROR("failed to update link training\n"); | |
3623 | break; | |
3624 | } | |
a4fc5ed6 KP |
3625 | } |
3626 | ||
33a34e4e JB |
3627 | intel_dp->DP = DP; |
3628 | } | |
3629 | ||
c19b0669 | 3630 | void |
33a34e4e JB |
3631 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3632 | { | |
33a34e4e | 3633 | bool channel_eq = false; |
37f80975 | 3634 | int tries, cr_tries; |
33a34e4e | 3635 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3636 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3637 | ||
3638 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3639 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3640 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3641 | |
a4fc5ed6 | 3642 | /* channel equalization */ |
70aff66c | 3643 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3644 | training_pattern | |
70aff66c JN |
3645 | DP_LINK_SCRAMBLING_DISABLE)) { |
3646 | DRM_ERROR("failed to start channel equalization\n"); | |
3647 | return; | |
3648 | } | |
3649 | ||
a4fc5ed6 | 3650 | tries = 0; |
37f80975 | 3651 | cr_tries = 0; |
a4fc5ed6 KP |
3652 | channel_eq = false; |
3653 | for (;;) { | |
70aff66c | 3654 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3655 | |
37f80975 JB |
3656 | if (cr_tries > 5) { |
3657 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3658 | break; |
3659 | } | |
3660 | ||
a7c9655f | 3661 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3662 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3663 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3664 | break; |
70aff66c | 3665 | } |
a4fc5ed6 | 3666 | |
37f80975 | 3667 | /* Make sure clock is still ok */ |
01916270 | 3668 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3669 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3670 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3671 | training_pattern | |
70aff66c | 3672 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3673 | cr_tries++; |
3674 | continue; | |
3675 | } | |
3676 | ||
1ffdff13 | 3677 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3678 | channel_eq = true; |
3679 | break; | |
3680 | } | |
a4fc5ed6 | 3681 | |
37f80975 JB |
3682 | /* Try 5 times, then try clock recovery if that fails */ |
3683 | if (tries > 5) { | |
3684 | intel_dp_link_down(intel_dp); | |
3685 | intel_dp_start_link_train(intel_dp); | |
70aff66c | 3686 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3687 | training_pattern | |
70aff66c | 3688 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3689 | tries = 0; |
3690 | cr_tries++; | |
3691 | continue; | |
3692 | } | |
a4fc5ed6 | 3693 | |
70aff66c JN |
3694 | /* Update training set as requested by target */ |
3695 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3696 | DRM_ERROR("failed to update link training\n"); | |
3697 | break; | |
3698 | } | |
3cf2efb1 | 3699 | ++tries; |
869184a6 | 3700 | } |
3cf2efb1 | 3701 | |
3ab9c637 ID |
3702 | intel_dp_set_idle_link_train(intel_dp); |
3703 | ||
3704 | intel_dp->DP = DP; | |
3705 | ||
d6c0d722 | 3706 | if (channel_eq) |
07f42258 | 3707 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3708 | |
3ab9c637 ID |
3709 | } |
3710 | ||
3711 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3712 | { | |
70aff66c | 3713 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3714 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3715 | } |
3716 | ||
3717 | static void | |
ea5b213a | 3718 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3719 | { |
da63a9f2 | 3720 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3721 | enum port port = intel_dig_port->port; |
da63a9f2 | 3722 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3723 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
3724 | struct intel_crtc *intel_crtc = |
3725 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 3726 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3727 | |
bc76e320 | 3728 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3729 | return; |
3730 | ||
0c33d8d7 | 3731 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3732 | return; |
3733 | ||
28c97730 | 3734 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3735 | |
bc7d38a4 | 3736 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3737 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3738 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3739 | } else { |
aad3d14d VS |
3740 | if (IS_CHERRYVIEW(dev)) |
3741 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3742 | else | |
3743 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3744 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3745 | } |
fe255d00 | 3746 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3747 | |
493a7081 | 3748 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3749 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 3750 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 3751 | |
5bddd17f EA |
3752 | /* Hardware workaround: leaving our transcoder select |
3753 | * set to transcoder B while it's off will prevent the | |
3754 | * corresponding HDMI output on transcoder A. | |
3755 | * | |
3756 | * Combine this with another hardware workaround: | |
3757 | * transcoder select bit can only be cleared while the | |
3758 | * port is enabled. | |
3759 | */ | |
3760 | DP &= ~DP_PIPEB_SELECT; | |
3761 | I915_WRITE(intel_dp->output_reg, DP); | |
3762 | ||
3763 | /* Changes to enable or select take place the vblank | |
3764 | * after being written. | |
3765 | */ | |
ff50afe9 DV |
3766 | if (WARN_ON(crtc == NULL)) { |
3767 | /* We should never try to disable a port without a crtc | |
3768 | * attached. For paranoia keep the code around for a | |
3769 | * bit. */ | |
31acbcc4 CW |
3770 | POSTING_READ(intel_dp->output_reg); |
3771 | msleep(50); | |
3772 | } else | |
ab527efc | 3773 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
3774 | } |
3775 | ||
832afda6 | 3776 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3777 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3778 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3779 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3780 | } |
3781 | ||
26d61aad KP |
3782 | static bool |
3783 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3784 | { |
a031d709 RV |
3785 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3786 | struct drm_device *dev = dig_port->base.base.dev; | |
3787 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3788 | ||
9d1a1031 JN |
3789 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3790 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3791 | return false; /* aux transfer failed */ |
92fd8fd1 | 3792 | |
a8e98153 | 3793 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3794 | |
edb39244 AJ |
3795 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3796 | return false; /* DPCD not present */ | |
3797 | ||
2293bb5c SK |
3798 | /* Check if the panel supports PSR */ |
3799 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3800 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3801 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3802 | intel_dp->psr_dpcd, | |
3803 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3804 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3805 | dev_priv->psr.sink_support = true; | |
50003939 | 3806 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3807 | } |
50003939 JN |
3808 | } |
3809 | ||
06ea66b6 TP |
3810 | /* Training Pattern 3 support */ |
3811 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && | |
3812 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED) { | |
3813 | intel_dp->use_tps3 = true; | |
f8d8a672 | 3814 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3815 | } else |
3816 | intel_dp->use_tps3 = false; | |
3817 | ||
edb39244 AJ |
3818 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3819 | DP_DWN_STRM_PORT_PRESENT)) | |
3820 | return true; /* native DP sink */ | |
3821 | ||
3822 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3823 | return true; /* no per-port downstream info */ | |
3824 | ||
9d1a1031 JN |
3825 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3826 | intel_dp->downstream_ports, | |
3827 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3828 | return false; /* downstream port status fetch failed */ |
3829 | ||
3830 | return true; | |
92fd8fd1 KP |
3831 | } |
3832 | ||
0d198328 AJ |
3833 | static void |
3834 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3835 | { | |
3836 | u8 buf[3]; | |
3837 | ||
3838 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3839 | return; | |
3840 | ||
9d1a1031 | 3841 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3842 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3843 | buf[0], buf[1], buf[2]); | |
3844 | ||
9d1a1031 | 3845 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3846 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3847 | buf[0], buf[1], buf[2]); | |
3848 | } | |
3849 | ||
0e32b39c DA |
3850 | static bool |
3851 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3852 | { | |
3853 | u8 buf[1]; | |
3854 | ||
3855 | if (!intel_dp->can_mst) | |
3856 | return false; | |
3857 | ||
3858 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3859 | return false; | |
3860 | ||
0e32b39c DA |
3861 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3862 | if (buf[0] & DP_MST_CAP) { | |
3863 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3864 | intel_dp->is_mst = true; | |
3865 | } else { | |
3866 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3867 | intel_dp->is_mst = false; | |
3868 | } | |
3869 | } | |
0e32b39c DA |
3870 | |
3871 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3872 | return intel_dp->is_mst; | |
3873 | } | |
3874 | ||
d2e216d0 RV |
3875 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3876 | { | |
3877 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3878 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3879 | struct intel_crtc *intel_crtc = | |
3880 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ad9dc91b RV |
3881 | u8 buf; |
3882 | int test_crc_count; | |
3883 | int attempts = 6; | |
d2e216d0 | 3884 | |
ad9dc91b | 3885 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3886 | return -EIO; |
d2e216d0 | 3887 | |
ad9dc91b | 3888 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
d2e216d0 RV |
3889 | return -ENOTTY; |
3890 | ||
1dda5f93 RV |
3891 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3892 | return -EIO; | |
3893 | ||
9d1a1031 | 3894 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
ce31d9f4 | 3895 | buf | DP_TEST_SINK_START) < 0) |
bda0381e | 3896 | return -EIO; |
d2e216d0 | 3897 | |
1dda5f93 | 3898 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3899 | return -EIO; |
ad9dc91b | 3900 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
d2e216d0 | 3901 | |
ad9dc91b | 3902 | do { |
1dda5f93 RV |
3903 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
3904 | DP_TEST_SINK_MISC, &buf) < 0) | |
3905 | return -EIO; | |
ad9dc91b RV |
3906 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
3907 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); | |
3908 | ||
3909 | if (attempts == 0) { | |
3910 | DRM_ERROR("Panel is unable to calculate CRC after 6 vblanks\n"); | |
3911 | return -EIO; | |
3912 | } | |
d2e216d0 | 3913 | |
9d1a1031 | 3914 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
bda0381e | 3915 | return -EIO; |
d2e216d0 | 3916 | |
1dda5f93 RV |
3917 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3918 | return -EIO; | |
3919 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, | |
3920 | buf & ~DP_TEST_SINK_START) < 0) | |
3921 | return -EIO; | |
ce31d9f4 | 3922 | |
d2e216d0 RV |
3923 | return 0; |
3924 | } | |
3925 | ||
a60f0e38 JB |
3926 | static bool |
3927 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3928 | { | |
9d1a1031 JN |
3929 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3930 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3931 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3932 | } |
3933 | ||
0e32b39c DA |
3934 | static bool |
3935 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3936 | { | |
3937 | int ret; | |
3938 | ||
3939 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3940 | DP_SINK_COUNT_ESI, | |
3941 | sink_irq_vector, 14); | |
3942 | if (ret != 14) | |
3943 | return false; | |
3944 | ||
3945 | return true; | |
3946 | } | |
3947 | ||
a60f0e38 JB |
3948 | static void |
3949 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3950 | { | |
3951 | /* NAK by default */ | |
9d1a1031 | 3952 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3953 | } |
3954 | ||
0e32b39c DA |
3955 | static int |
3956 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3957 | { | |
3958 | bool bret; | |
3959 | ||
3960 | if (intel_dp->is_mst) { | |
3961 | u8 esi[16] = { 0 }; | |
3962 | int ret = 0; | |
3963 | int retry; | |
3964 | bool handled; | |
3965 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3966 | go_again: | |
3967 | if (bret == true) { | |
3968 | ||
3969 | /* check link status - esi[10] = 0x200c */ | |
3970 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3971 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3972 | intel_dp_start_link_train(intel_dp); | |
3973 | intel_dp_complete_link_train(intel_dp); | |
3974 | intel_dp_stop_link_train(intel_dp); | |
3975 | } | |
3976 | ||
3977 | DRM_DEBUG_KMS("got esi %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3978 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); | |
3979 | ||
3980 | if (handled) { | |
3981 | for (retry = 0; retry < 3; retry++) { | |
3982 | int wret; | |
3983 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3984 | DP_SINK_COUNT_ESI+1, | |
3985 | &esi[1], 3); | |
3986 | if (wret == 3) { | |
3987 | break; | |
3988 | } | |
3989 | } | |
3990 | ||
3991 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3992 | if (bret == true) { | |
3993 | DRM_DEBUG_KMS("got esi2 %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3994 | goto go_again; | |
3995 | } | |
3996 | } else | |
3997 | ret = 0; | |
3998 | ||
3999 | return ret; | |
4000 | } else { | |
4001 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4002 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
4003 | intel_dp->is_mst = false; | |
4004 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4005 | /* send a hotplug event */ | |
4006 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
4007 | } | |
4008 | } | |
4009 | return -EINVAL; | |
4010 | } | |
4011 | ||
a4fc5ed6 KP |
4012 | /* |
4013 | * According to DP spec | |
4014 | * 5.1.2: | |
4015 | * 1. Read DPCD | |
4016 | * 2. Configure link according to Receiver Capabilities | |
4017 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4018 | * 4. Check link status on receipt of hot-plug interrupt | |
4019 | */ | |
00c09d70 | 4020 | void |
ea5b213a | 4021 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 4022 | { |
5b215bcf | 4023 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 4024 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 4025 | u8 sink_irq_vector; |
93f62dad | 4026 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 4027 | |
5b215bcf DA |
4028 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
4029 | ||
da63a9f2 | 4030 | if (!intel_encoder->connectors_active) |
d2b996ac | 4031 | return; |
59cd09e1 | 4032 | |
da63a9f2 | 4033 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
4034 | return; |
4035 | ||
1a125d8a ID |
4036 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
4037 | return; | |
4038 | ||
92fd8fd1 | 4039 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 4040 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
4041 | return; |
4042 | } | |
4043 | ||
92fd8fd1 | 4044 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 4045 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
4046 | return; |
4047 | } | |
4048 | ||
a60f0e38 JB |
4049 | /* Try to read the source of the interrupt */ |
4050 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4051 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4052 | /* Clear interrupt source */ | |
9d1a1031 JN |
4053 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4054 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4055 | sink_irq_vector); | |
a60f0e38 JB |
4056 | |
4057 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4058 | intel_dp_handle_test_request(intel_dp); | |
4059 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4060 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4061 | } | |
4062 | ||
1ffdff13 | 4063 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4064 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4065 | intel_encoder->base.name); |
33a34e4e JB |
4066 | intel_dp_start_link_train(intel_dp); |
4067 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4068 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4069 | } |
a4fc5ed6 | 4070 | } |
a4fc5ed6 | 4071 | |
caf9ab24 | 4072 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4073 | static enum drm_connector_status |
26d61aad | 4074 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4075 | { |
caf9ab24 | 4076 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4077 | uint8_t type; |
4078 | ||
4079 | if (!intel_dp_get_dpcd(intel_dp)) | |
4080 | return connector_status_disconnected; | |
4081 | ||
4082 | /* if there's no downstream port, we're done */ | |
4083 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4084 | return connector_status_connected; |
caf9ab24 AJ |
4085 | |
4086 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4087 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4088 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4089 | uint8_t reg; |
9d1a1031 JN |
4090 | |
4091 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4092 | ®, 1) < 0) | |
caf9ab24 | 4093 | return connector_status_unknown; |
9d1a1031 | 4094 | |
23235177 AJ |
4095 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4096 | : connector_status_disconnected; | |
caf9ab24 AJ |
4097 | } |
4098 | ||
4099 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4100 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4101 | return connector_status_connected; |
caf9ab24 AJ |
4102 | |
4103 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4104 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4105 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4106 | if (type == DP_DS_PORT_TYPE_VGA || | |
4107 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4108 | return connector_status_unknown; | |
4109 | } else { | |
4110 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4111 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4112 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4113 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4114 | return connector_status_unknown; | |
4115 | } | |
caf9ab24 AJ |
4116 | |
4117 | /* Anything else is out of spec, warn and ignore */ | |
4118 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4119 | return connector_status_disconnected; |
71ba9000 AJ |
4120 | } |
4121 | ||
d410b56d CW |
4122 | static enum drm_connector_status |
4123 | edp_detect(struct intel_dp *intel_dp) | |
4124 | { | |
4125 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4126 | enum drm_connector_status status; | |
4127 | ||
4128 | status = intel_panel_detect(dev); | |
4129 | if (status == connector_status_unknown) | |
4130 | status = connector_status_connected; | |
4131 | ||
4132 | return status; | |
4133 | } | |
4134 | ||
5eb08b69 | 4135 | static enum drm_connector_status |
a9756bb5 | 4136 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4137 | { |
30add22d | 4138 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4139 | struct drm_i915_private *dev_priv = dev->dev_private; |
4140 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4141 | |
1b469639 DL |
4142 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4143 | return connector_status_disconnected; | |
4144 | ||
26d61aad | 4145 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4146 | } |
4147 | ||
2a592bec DA |
4148 | static int g4x_digital_port_connected(struct drm_device *dev, |
4149 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4150 | { |
a4fc5ed6 | 4151 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4152 | uint32_t bit; |
5eb08b69 | 4153 | |
232a6ee9 TP |
4154 | if (IS_VALLEYVIEW(dev)) { |
4155 | switch (intel_dig_port->port) { | |
4156 | case PORT_B: | |
4157 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4158 | break; | |
4159 | case PORT_C: | |
4160 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4161 | break; | |
4162 | case PORT_D: | |
4163 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4164 | break; | |
4165 | default: | |
2a592bec | 4166 | return -EINVAL; |
232a6ee9 TP |
4167 | } |
4168 | } else { | |
4169 | switch (intel_dig_port->port) { | |
4170 | case PORT_B: | |
4171 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4172 | break; | |
4173 | case PORT_C: | |
4174 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4175 | break; | |
4176 | case PORT_D: | |
4177 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4178 | break; | |
4179 | default: | |
2a592bec | 4180 | return -EINVAL; |
232a6ee9 | 4181 | } |
a4fc5ed6 KP |
4182 | } |
4183 | ||
10f76a38 | 4184 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4185 | return 0; |
4186 | return 1; | |
4187 | } | |
4188 | ||
4189 | static enum drm_connector_status | |
4190 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4191 | { | |
4192 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4193 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4194 | int ret; | |
4195 | ||
4196 | /* Can't disconnect eDP, but you can close the lid... */ | |
4197 | if (is_edp(intel_dp)) { | |
4198 | enum drm_connector_status status; | |
4199 | ||
4200 | status = intel_panel_detect(dev); | |
4201 | if (status == connector_status_unknown) | |
4202 | status = connector_status_connected; | |
4203 | return status; | |
4204 | } | |
4205 | ||
4206 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4207 | if (ret == -EINVAL) | |
4208 | return connector_status_unknown; | |
4209 | else if (ret == 0) | |
a4fc5ed6 KP |
4210 | return connector_status_disconnected; |
4211 | ||
26d61aad | 4212 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4213 | } |
4214 | ||
8c241fef | 4215 | static struct edid * |
beb60608 | 4216 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4217 | { |
beb60608 | 4218 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4219 | |
9cd300e0 JN |
4220 | /* use cached edid if we have one */ |
4221 | if (intel_connector->edid) { | |
9cd300e0 JN |
4222 | /* invalid edid */ |
4223 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4224 | return NULL; |
4225 | ||
55e9edeb | 4226 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4227 | } else |
4228 | return drm_get_edid(&intel_connector->base, | |
4229 | &intel_dp->aux.ddc); | |
4230 | } | |
8c241fef | 4231 | |
beb60608 CW |
4232 | static void |
4233 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4234 | { | |
4235 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4236 | struct edid *edid; | |
8c241fef | 4237 | |
beb60608 CW |
4238 | edid = intel_dp_get_edid(intel_dp); |
4239 | intel_connector->detect_edid = edid; | |
4240 | ||
4241 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4242 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4243 | else | |
4244 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4245 | } |
4246 | ||
beb60608 CW |
4247 | static void |
4248 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4249 | { |
beb60608 | 4250 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4251 | |
beb60608 CW |
4252 | kfree(intel_connector->detect_edid); |
4253 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4254 | |
beb60608 CW |
4255 | intel_dp->has_audio = false; |
4256 | } | |
d6f24d0f | 4257 | |
beb60608 CW |
4258 | static enum intel_display_power_domain |
4259 | intel_dp_power_get(struct intel_dp *dp) | |
4260 | { | |
4261 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4262 | enum intel_display_power_domain power_domain; | |
4263 | ||
4264 | power_domain = intel_display_port_power_domain(encoder); | |
4265 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4266 | ||
4267 | return power_domain; | |
4268 | } | |
d6f24d0f | 4269 | |
beb60608 CW |
4270 | static void |
4271 | intel_dp_power_put(struct intel_dp *dp, | |
4272 | enum intel_display_power_domain power_domain) | |
4273 | { | |
4274 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4275 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4276 | } |
4277 | ||
a9756bb5 ZW |
4278 | static enum drm_connector_status |
4279 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4280 | { | |
4281 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4282 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4283 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4284 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4285 | enum drm_connector_status status; |
671dedd2 | 4286 | enum intel_display_power_domain power_domain; |
0e32b39c | 4287 | bool ret; |
a9756bb5 | 4288 | |
164c8598 | 4289 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4290 | connector->base.id, connector->name); |
beb60608 | 4291 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4292 | |
0e32b39c DA |
4293 | if (intel_dp->is_mst) { |
4294 | /* MST devices are disconnected from a monitor POV */ | |
4295 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4296 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4297 | return connector_status_disconnected; |
0e32b39c DA |
4298 | } |
4299 | ||
beb60608 | 4300 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4301 | |
d410b56d CW |
4302 | /* Can't disconnect eDP, but you can close the lid... */ |
4303 | if (is_edp(intel_dp)) | |
4304 | status = edp_detect(intel_dp); | |
4305 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4306 | status = ironlake_dp_detect(intel_dp); |
4307 | else | |
4308 | status = g4x_dp_detect(intel_dp); | |
4309 | if (status != connector_status_connected) | |
c8c8fb33 | 4310 | goto out; |
a9756bb5 | 4311 | |
0d198328 AJ |
4312 | intel_dp_probe_oui(intel_dp); |
4313 | ||
0e32b39c DA |
4314 | ret = intel_dp_probe_mst(intel_dp); |
4315 | if (ret) { | |
4316 | /* if we are in MST mode then this connector | |
4317 | won't appear connected or have anything with EDID on it */ | |
4318 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4319 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4320 | status = connector_status_disconnected; | |
4321 | goto out; | |
4322 | } | |
4323 | ||
beb60608 | 4324 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4325 | |
d63885da PZ |
4326 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4327 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4328 | status = connector_status_connected; |
4329 | ||
4330 | out: | |
beb60608 | 4331 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4332 | return status; |
a4fc5ed6 KP |
4333 | } |
4334 | ||
beb60608 CW |
4335 | static void |
4336 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4337 | { |
df0e9248 | 4338 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4339 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4340 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4341 | |
beb60608 CW |
4342 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4343 | connector->base.id, connector->name); | |
4344 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4345 | |
beb60608 CW |
4346 | if (connector->status != connector_status_connected) |
4347 | return; | |
671dedd2 | 4348 | |
beb60608 CW |
4349 | power_domain = intel_dp_power_get(intel_dp); |
4350 | ||
4351 | intel_dp_set_edid(intel_dp); | |
4352 | ||
4353 | intel_dp_power_put(intel_dp, power_domain); | |
4354 | ||
4355 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4356 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4357 | } | |
4358 | ||
4359 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4360 | { | |
4361 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4362 | struct edid *edid; | |
4363 | ||
4364 | edid = intel_connector->detect_edid; | |
4365 | if (edid) { | |
4366 | int ret = intel_connector_update_modes(connector, edid); | |
4367 | if (ret) | |
4368 | return ret; | |
4369 | } | |
32f9d658 | 4370 | |
f8779fda | 4371 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4372 | if (is_edp(intel_attached_dp(connector)) && |
4373 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4374 | struct drm_display_mode *mode; |
beb60608 CW |
4375 | |
4376 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4377 | intel_connector->panel.fixed_mode); |
f8779fda | 4378 | if (mode) { |
32f9d658 ZW |
4379 | drm_mode_probed_add(connector, mode); |
4380 | return 1; | |
4381 | } | |
4382 | } | |
beb60608 | 4383 | |
32f9d658 | 4384 | return 0; |
a4fc5ed6 KP |
4385 | } |
4386 | ||
1aad7ac0 CW |
4387 | static bool |
4388 | intel_dp_detect_audio(struct drm_connector *connector) | |
4389 | { | |
1aad7ac0 | 4390 | bool has_audio = false; |
beb60608 | 4391 | struct edid *edid; |
1aad7ac0 | 4392 | |
beb60608 CW |
4393 | edid = to_intel_connector(connector)->detect_edid; |
4394 | if (edid) | |
1aad7ac0 | 4395 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4396 | |
1aad7ac0 CW |
4397 | return has_audio; |
4398 | } | |
4399 | ||
f684960e CW |
4400 | static int |
4401 | intel_dp_set_property(struct drm_connector *connector, | |
4402 | struct drm_property *property, | |
4403 | uint64_t val) | |
4404 | { | |
e953fd7b | 4405 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4406 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4407 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4408 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4409 | int ret; |
4410 | ||
662595df | 4411 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4412 | if (ret) |
4413 | return ret; | |
4414 | ||
3f43c48d | 4415 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4416 | int i = val; |
4417 | bool has_audio; | |
4418 | ||
4419 | if (i == intel_dp->force_audio) | |
f684960e CW |
4420 | return 0; |
4421 | ||
1aad7ac0 | 4422 | intel_dp->force_audio = i; |
f684960e | 4423 | |
c3e5f67b | 4424 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4425 | has_audio = intel_dp_detect_audio(connector); |
4426 | else | |
c3e5f67b | 4427 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4428 | |
4429 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4430 | return 0; |
4431 | ||
1aad7ac0 | 4432 | intel_dp->has_audio = has_audio; |
f684960e CW |
4433 | goto done; |
4434 | } | |
4435 | ||
e953fd7b | 4436 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4437 | bool old_auto = intel_dp->color_range_auto; |
4438 | uint32_t old_range = intel_dp->color_range; | |
4439 | ||
55bc60db VS |
4440 | switch (val) { |
4441 | case INTEL_BROADCAST_RGB_AUTO: | |
4442 | intel_dp->color_range_auto = true; | |
4443 | break; | |
4444 | case INTEL_BROADCAST_RGB_FULL: | |
4445 | intel_dp->color_range_auto = false; | |
4446 | intel_dp->color_range = 0; | |
4447 | break; | |
4448 | case INTEL_BROADCAST_RGB_LIMITED: | |
4449 | intel_dp->color_range_auto = false; | |
4450 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4451 | break; | |
4452 | default: | |
4453 | return -EINVAL; | |
4454 | } | |
ae4edb80 DV |
4455 | |
4456 | if (old_auto == intel_dp->color_range_auto && | |
4457 | old_range == intel_dp->color_range) | |
4458 | return 0; | |
4459 | ||
e953fd7b CW |
4460 | goto done; |
4461 | } | |
4462 | ||
53b41837 YN |
4463 | if (is_edp(intel_dp) && |
4464 | property == connector->dev->mode_config.scaling_mode_property) { | |
4465 | if (val == DRM_MODE_SCALE_NONE) { | |
4466 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4467 | return -EINVAL; | |
4468 | } | |
4469 | ||
4470 | if (intel_connector->panel.fitting_mode == val) { | |
4471 | /* the eDP scaling property is not changed */ | |
4472 | return 0; | |
4473 | } | |
4474 | intel_connector->panel.fitting_mode = val; | |
4475 | ||
4476 | goto done; | |
4477 | } | |
4478 | ||
f684960e CW |
4479 | return -EINVAL; |
4480 | ||
4481 | done: | |
c0c36b94 CW |
4482 | if (intel_encoder->base.crtc) |
4483 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4484 | |
4485 | return 0; | |
4486 | } | |
4487 | ||
a4fc5ed6 | 4488 | static void |
73845adf | 4489 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4490 | { |
1d508706 | 4491 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4492 | |
10e972d3 | 4493 | kfree(intel_connector->detect_edid); |
beb60608 | 4494 | |
9cd300e0 JN |
4495 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4496 | kfree(intel_connector->edid); | |
4497 | ||
acd8db10 PZ |
4498 | /* Can't call is_edp() since the encoder may have been destroyed |
4499 | * already. */ | |
4500 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4501 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4502 | |
a4fc5ed6 | 4503 | drm_connector_cleanup(connector); |
55f78c43 | 4504 | kfree(connector); |
a4fc5ed6 KP |
4505 | } |
4506 | ||
00c09d70 | 4507 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4508 | { |
da63a9f2 PZ |
4509 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4510 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4511 | |
4f71d0cb | 4512 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4513 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
24d05927 | 4514 | drm_encoder_cleanup(encoder); |
bd943159 KP |
4515 | if (is_edp(intel_dp)) { |
4516 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4517 | /* |
4518 | * vdd might still be enabled do to the delayed vdd off. | |
4519 | * Make sure vdd is actually turned off here. | |
4520 | */ | |
773538e8 | 4521 | pps_lock(intel_dp); |
4be73780 | 4522 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4523 | pps_unlock(intel_dp); |
4524 | ||
01527b31 CT |
4525 | if (intel_dp->edp_notifier.notifier_call) { |
4526 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4527 | intel_dp->edp_notifier.notifier_call = NULL; | |
4528 | } | |
bd943159 | 4529 | } |
da63a9f2 | 4530 | kfree(intel_dig_port); |
24d05927 DV |
4531 | } |
4532 | ||
07f9cd0b ID |
4533 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4534 | { | |
4535 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4536 | ||
4537 | if (!is_edp(intel_dp)) | |
4538 | return; | |
4539 | ||
951468f3 VS |
4540 | /* |
4541 | * vdd might still be enabled do to the delayed vdd off. | |
4542 | * Make sure vdd is actually turned off here. | |
4543 | */ | |
773538e8 | 4544 | pps_lock(intel_dp); |
07f9cd0b | 4545 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4546 | pps_unlock(intel_dp); |
07f9cd0b ID |
4547 | } |
4548 | ||
6d93c0c4 ID |
4549 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4550 | { | |
4551 | intel_edp_panel_vdd_sanitize(to_intel_encoder(encoder)); | |
4552 | } | |
4553 | ||
a4fc5ed6 | 4554 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4555 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4556 | .detect = intel_dp_detect, |
beb60608 | 4557 | .force = intel_dp_force, |
a4fc5ed6 | 4558 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4559 | .set_property = intel_dp_set_property, |
73845adf | 4560 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
4561 | }; |
4562 | ||
4563 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4564 | .get_modes = intel_dp_get_modes, | |
4565 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4566 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4567 | }; |
4568 | ||
a4fc5ed6 | 4569 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4570 | .reset = intel_dp_encoder_reset, |
24d05927 | 4571 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4572 | }; |
4573 | ||
0e32b39c | 4574 | void |
21d40d37 | 4575 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4576 | { |
0e32b39c | 4577 | return; |
c8110e52 | 4578 | } |
6207937d | 4579 | |
13cf5504 DA |
4580 | bool |
4581 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) | |
4582 | { | |
4583 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4584 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4585 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4586 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 ID |
4587 | enum intel_display_power_domain power_domain; |
4588 | bool ret = true; | |
4589 | ||
0e32b39c DA |
4590 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4591 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4592 | |
26fbb774 VS |
4593 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4594 | port_name(intel_dig_port->port), | |
0e32b39c | 4595 | long_hpd ? "long" : "short"); |
13cf5504 | 4596 | |
1c767b33 ID |
4597 | power_domain = intel_display_port_power_domain(intel_encoder); |
4598 | intel_display_power_get(dev_priv, power_domain); | |
4599 | ||
0e32b39c | 4600 | if (long_hpd) { |
2a592bec DA |
4601 | |
4602 | if (HAS_PCH_SPLIT(dev)) { | |
4603 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4604 | goto mst_fail; | |
4605 | } else { | |
4606 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4607 | goto mst_fail; | |
4608 | } | |
0e32b39c DA |
4609 | |
4610 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4611 | goto mst_fail; | |
4612 | } | |
4613 | ||
4614 | intel_dp_probe_oui(intel_dp); | |
4615 | ||
4616 | if (!intel_dp_probe_mst(intel_dp)) | |
4617 | goto mst_fail; | |
4618 | ||
4619 | } else { | |
4620 | if (intel_dp->is_mst) { | |
1c767b33 | 4621 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4622 | goto mst_fail; |
4623 | } | |
4624 | ||
4625 | if (!intel_dp->is_mst) { | |
4626 | /* | |
4627 | * we'll check the link status via the normal hot plug path later - | |
4628 | * but for short hpds we should check it now | |
4629 | */ | |
5b215bcf | 4630 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4631 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4632 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4633 | } |
4634 | } | |
1c767b33 ID |
4635 | ret = false; |
4636 | goto put_power; | |
0e32b39c DA |
4637 | mst_fail: |
4638 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4639 | if (intel_dp->is_mst) { | |
4640 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4641 | intel_dp->is_mst = false; | |
4642 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4643 | } | |
1c767b33 ID |
4644 | put_power: |
4645 | intel_display_power_put(dev_priv, power_domain); | |
4646 | ||
4647 | return ret; | |
13cf5504 DA |
4648 | } |
4649 | ||
e3421a18 ZW |
4650 | /* Return which DP Port should be selected for Transcoder DP control */ |
4651 | int | |
0206e353 | 4652 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4653 | { |
4654 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4655 | struct intel_encoder *intel_encoder; |
4656 | struct intel_dp *intel_dp; | |
e3421a18 | 4657 | |
fa90ecef PZ |
4658 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4659 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4660 | |
fa90ecef PZ |
4661 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4662 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4663 | return intel_dp->output_reg; |
e3421a18 | 4664 | } |
ea5b213a | 4665 | |
e3421a18 ZW |
4666 | return -1; |
4667 | } | |
4668 | ||
36e83a18 | 4669 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4670 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4671 | { |
4672 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4673 | union child_device_config *p_child; |
36e83a18 | 4674 | int i; |
5d8a7752 VS |
4675 | static const short port_mapping[] = { |
4676 | [PORT_B] = PORT_IDPB, | |
4677 | [PORT_C] = PORT_IDPC, | |
4678 | [PORT_D] = PORT_IDPD, | |
4679 | }; | |
36e83a18 | 4680 | |
3b32a35b VS |
4681 | if (port == PORT_A) |
4682 | return true; | |
4683 | ||
41aa3448 | 4684 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4685 | return false; |
4686 | ||
41aa3448 RV |
4687 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4688 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4689 | |
5d8a7752 | 4690 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4691 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4692 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4693 | return true; |
4694 | } | |
4695 | return false; | |
4696 | } | |
4697 | ||
0e32b39c | 4698 | void |
f684960e CW |
4699 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4700 | { | |
53b41837 YN |
4701 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4702 | ||
3f43c48d | 4703 | intel_attach_force_audio_property(connector); |
e953fd7b | 4704 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4705 | intel_dp->color_range_auto = true; |
53b41837 YN |
4706 | |
4707 | if (is_edp(intel_dp)) { | |
4708 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4709 | drm_object_attach_property( |
4710 | &connector->base, | |
53b41837 | 4711 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4712 | DRM_MODE_SCALE_ASPECT); |
4713 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4714 | } |
f684960e CW |
4715 | } |
4716 | ||
dada1a9f ID |
4717 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4718 | { | |
4719 | intel_dp->last_power_cycle = jiffies; | |
4720 | intel_dp->last_power_on = jiffies; | |
4721 | intel_dp->last_backlight_off = jiffies; | |
4722 | } | |
4723 | ||
67a54566 DV |
4724 | static void |
4725 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 4726 | struct intel_dp *intel_dp) |
67a54566 DV |
4727 | { |
4728 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
4729 | struct edp_power_seq cur, vbt, spec, |
4730 | *final = &intel_dp->pps_delays; | |
67a54566 | 4731 | u32 pp_on, pp_off, pp_div, pp; |
bf13e81b | 4732 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4733 | |
e39b999a VS |
4734 | lockdep_assert_held(&dev_priv->pps_mutex); |
4735 | ||
81ddbc69 VS |
4736 | /* already initialized? */ |
4737 | if (final->t11_t12 != 0) | |
4738 | return; | |
4739 | ||
453c5420 | 4740 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4741 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4742 | pp_on_reg = PCH_PP_ON_DELAYS; |
4743 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4744 | pp_div_reg = PCH_PP_DIVISOR; | |
4745 | } else { | |
bf13e81b JN |
4746 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4747 | ||
4748 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4749 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4750 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4751 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4752 | } |
67a54566 DV |
4753 | |
4754 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4755 | * the very first thing. */ | |
453c5420 | 4756 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4757 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4758 | |
453c5420 JB |
4759 | pp_on = I915_READ(pp_on_reg); |
4760 | pp_off = I915_READ(pp_off_reg); | |
4761 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4762 | |
4763 | /* Pull timing values out of registers */ | |
4764 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4765 | PANEL_POWER_UP_DELAY_SHIFT; | |
4766 | ||
4767 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4768 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4769 | ||
4770 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4771 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4772 | ||
4773 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4774 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4775 | ||
4776 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4777 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4778 | ||
4779 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4780 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4781 | ||
41aa3448 | 4782 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4783 | |
4784 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4785 | * our hw here, which are all in 100usec. */ | |
4786 | spec.t1_t3 = 210 * 10; | |
4787 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4788 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4789 | spec.t10 = 500 * 10; | |
4790 | /* This one is special and actually in units of 100ms, but zero | |
4791 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4792 | * table multiplies it with 1000 to make it in units of 100usec, | |
4793 | * too. */ | |
4794 | spec.t11_t12 = (510 + 100) * 10; | |
4795 | ||
4796 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4797 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4798 | ||
4799 | /* Use the max of the register settings and vbt. If both are | |
4800 | * unset, fall back to the spec limits. */ | |
36b5f425 | 4801 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
4802 | spec.field : \ |
4803 | max(cur.field, vbt.field)) | |
4804 | assign_final(t1_t3); | |
4805 | assign_final(t8); | |
4806 | assign_final(t9); | |
4807 | assign_final(t10); | |
4808 | assign_final(t11_t12); | |
4809 | #undef assign_final | |
4810 | ||
36b5f425 | 4811 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
4812 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
4813 | intel_dp->backlight_on_delay = get_delay(t8); | |
4814 | intel_dp->backlight_off_delay = get_delay(t9); | |
4815 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4816 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4817 | #undef get_delay | |
4818 | ||
f30d26e4 JN |
4819 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4820 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4821 | intel_dp->panel_power_cycle_delay); | |
4822 | ||
4823 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4824 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
4825 | } |
4826 | ||
4827 | static void | |
4828 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 4829 | struct intel_dp *intel_dp) |
f30d26e4 JN |
4830 | { |
4831 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4832 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4833 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4834 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 4835 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 4836 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 4837 | |
e39b999a | 4838 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
4839 | |
4840 | if (HAS_PCH_SPLIT(dev)) { | |
4841 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4842 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4843 | pp_div_reg = PCH_PP_DIVISOR; | |
4844 | } else { | |
bf13e81b JN |
4845 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4846 | ||
4847 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4848 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4849 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4850 | } |
4851 | ||
b2f19d1a PZ |
4852 | /* |
4853 | * And finally store the new values in the power sequencer. The | |
4854 | * backlight delays are set to 1 because we do manual waits on them. For | |
4855 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4856 | * we'll end up waiting for the backlight off delay twice: once when we | |
4857 | * do the manual sleep, and once when we disable the panel and wait for | |
4858 | * the PP_STATUS bit to become zero. | |
4859 | */ | |
f30d26e4 | 4860 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4861 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4862 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4863 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4864 | /* Compute the divisor for the pp clock, simply match the Bspec |
4865 | * formula. */ | |
453c5420 | 4866 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4867 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4868 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4869 | ||
4870 | /* Haswell doesn't have any port selection bits for the panel | |
4871 | * power sequencer any more. */ | |
bc7d38a4 | 4872 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 4873 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 4874 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 4875 | if (port == PORT_A) |
a24c144c | 4876 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4877 | else |
a24c144c | 4878 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4879 | } |
4880 | ||
453c5420 JB |
4881 | pp_on |= port_sel; |
4882 | ||
4883 | I915_WRITE(pp_on_reg, pp_on); | |
4884 | I915_WRITE(pp_off_reg, pp_off); | |
4885 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4886 | |
67a54566 | 4887 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4888 | I915_READ(pp_on_reg), |
4889 | I915_READ(pp_off_reg), | |
4890 | I915_READ(pp_div_reg)); | |
f684960e CW |
4891 | } |
4892 | ||
439d7ac0 PB |
4893 | void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
4894 | { | |
4895 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4896 | struct intel_encoder *encoder; | |
4897 | struct intel_dp *intel_dp = NULL; | |
4898 | struct intel_crtc_config *config = NULL; | |
4899 | struct intel_crtc *intel_crtc = NULL; | |
4900 | struct intel_connector *intel_connector = dev_priv->drrs.connector; | |
4901 | u32 reg, val; | |
4902 | enum edp_drrs_refresh_rate_type index = DRRS_HIGH_RR; | |
4903 | ||
4904 | if (refresh_rate <= 0) { | |
4905 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4906 | return; | |
4907 | } | |
4908 | ||
4909 | if (intel_connector == NULL) { | |
4910 | DRM_DEBUG_KMS("DRRS supported for eDP only.\n"); | |
4911 | return; | |
4912 | } | |
4913 | ||
1fcc9d1c DV |
4914 | /* |
4915 | * FIXME: This needs proper synchronization with psr state. But really | |
4916 | * hard to tell without seeing the user of this function of this code. | |
4917 | * Check locking and ordering once that lands. | |
4918 | */ | |
439d7ac0 PB |
4919 | if (INTEL_INFO(dev)->gen < 8 && intel_edp_is_psr_enabled(dev)) { |
4920 | DRM_DEBUG_KMS("DRRS is disabled as PSR is enabled\n"); | |
4921 | return; | |
4922 | } | |
4923 | ||
4924 | encoder = intel_attached_encoder(&intel_connector->base); | |
4925 | intel_dp = enc_to_intel_dp(&encoder->base); | |
4926 | intel_crtc = encoder->new_crtc; | |
4927 | ||
4928 | if (!intel_crtc) { | |
4929 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4930 | return; | |
4931 | } | |
4932 | ||
4933 | config = &intel_crtc->config; | |
4934 | ||
4935 | if (intel_dp->drrs_state.type < SEAMLESS_DRRS_SUPPORT) { | |
4936 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); | |
4937 | return; | |
4938 | } | |
4939 | ||
4940 | if (intel_connector->panel.downclock_mode->vrefresh == refresh_rate) | |
4941 | index = DRRS_LOW_RR; | |
4942 | ||
4943 | if (index == intel_dp->drrs_state.refresh_rate_type) { | |
4944 | DRM_DEBUG_KMS( | |
4945 | "DRRS requested for previously set RR...ignoring\n"); | |
4946 | return; | |
4947 | } | |
4948 | ||
4949 | if (!intel_crtc->active) { | |
4950 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4951 | return; | |
4952 | } | |
4953 | ||
4954 | if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) { | |
4955 | reg = PIPECONF(intel_crtc->config.cpu_transcoder); | |
4956 | val = I915_READ(reg); | |
4957 | if (index > DRRS_HIGH_RR) { | |
4958 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
f769cd24 | 4959 | intel_dp_set_m_n(intel_crtc); |
439d7ac0 PB |
4960 | } else { |
4961 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
4962 | } | |
4963 | I915_WRITE(reg, val); | |
4964 | } | |
4965 | ||
4966 | /* | |
4967 | * mutex taken to ensure that there is no race between differnt | |
4968 | * drrs calls trying to update refresh rate. This scenario may occur | |
4969 | * in future when idleness detection based DRRS in kernel and | |
4970 | * possible calls from user space to set differnt RR are made. | |
4971 | */ | |
4972 | ||
4973 | mutex_lock(&intel_dp->drrs_state.mutex); | |
4974 | ||
4975 | intel_dp->drrs_state.refresh_rate_type = index; | |
4976 | ||
4977 | mutex_unlock(&intel_dp->drrs_state.mutex); | |
4978 | ||
4979 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
4980 | } | |
4981 | ||
4f9db5b5 PB |
4982 | static struct drm_display_mode * |
4983 | intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, | |
4984 | struct intel_connector *intel_connector, | |
4985 | struct drm_display_mode *fixed_mode) | |
4986 | { | |
4987 | struct drm_connector *connector = &intel_connector->base; | |
4988 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4989 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4990 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4991 | struct drm_display_mode *downclock_mode = NULL; | |
4992 | ||
4993 | if (INTEL_INFO(dev)->gen <= 6) { | |
4994 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
4995 | return NULL; | |
4996 | } | |
4997 | ||
4998 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 4999 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5000 | return NULL; |
5001 | } | |
5002 | ||
5003 | downclock_mode = intel_find_panel_downclock | |
5004 | (dev, fixed_mode, connector); | |
5005 | ||
5006 | if (!downclock_mode) { | |
4079b8d1 | 5007 | DRM_DEBUG_KMS("DRRS not supported\n"); |
4f9db5b5 PB |
5008 | return NULL; |
5009 | } | |
5010 | ||
439d7ac0 PB |
5011 | dev_priv->drrs.connector = intel_connector; |
5012 | ||
5013 | mutex_init(&intel_dp->drrs_state.mutex); | |
5014 | ||
4f9db5b5 PB |
5015 | intel_dp->drrs_state.type = dev_priv->vbt.drrs_type; |
5016 | ||
5017 | intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; | |
4079b8d1 | 5018 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5019 | return downclock_mode; |
5020 | } | |
5021 | ||
aba86890 ID |
5022 | void intel_edp_panel_vdd_sanitize(struct intel_encoder *intel_encoder) |
5023 | { | |
5024 | struct drm_device *dev = intel_encoder->base.dev; | |
5025 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5026 | struct intel_dp *intel_dp; | |
5027 | enum intel_display_power_domain power_domain; | |
5028 | ||
5029 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
5030 | return; | |
5031 | ||
5032 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
773538e8 VS |
5033 | |
5034 | pps_lock(intel_dp); | |
5035 | ||
aba86890 | 5036 | if (!edp_have_panel_vdd(intel_dp)) |
e39b999a | 5037 | goto out; |
aba86890 ID |
5038 | /* |
5039 | * The VDD bit needs a power domain reference, so if the bit is | |
5040 | * already enabled when we boot or resume, grab this reference and | |
5041 | * schedule a vdd off, so we don't hold on to the reference | |
5042 | * indefinitely. | |
5043 | */ | |
5044 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
5045 | power_domain = intel_display_port_power_domain(intel_encoder); | |
5046 | intel_display_power_get(dev_priv, power_domain); | |
5047 | ||
5048 | edp_panel_vdd_schedule_off(intel_dp); | |
e39b999a | 5049 | out: |
773538e8 | 5050 | pps_unlock(intel_dp); |
aba86890 ID |
5051 | } |
5052 | ||
ed92f0b2 | 5053 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5054 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5055 | { |
5056 | struct drm_connector *connector = &intel_connector->base; | |
5057 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5058 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5059 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5060 | struct drm_i915_private *dev_priv = dev->dev_private; |
5061 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5062 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5063 | bool has_dpcd; |
5064 | struct drm_display_mode *scan; | |
5065 | struct edid *edid; | |
5066 | ||
4f9db5b5 PB |
5067 | intel_dp->drrs_state.type = DRRS_NOT_SUPPORTED; |
5068 | ||
ed92f0b2 PZ |
5069 | if (!is_edp(intel_dp)) |
5070 | return true; | |
5071 | ||
aba86890 | 5072 | intel_edp_panel_vdd_sanitize(intel_encoder); |
63635217 | 5073 | |
ed92f0b2 | 5074 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5075 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5076 | |
5077 | if (has_dpcd) { | |
5078 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5079 | dev_priv->no_aux_handshake = | |
5080 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5081 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5082 | } else { | |
5083 | /* if this fails, presume the device is a ghost */ | |
5084 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5085 | return false; |
5086 | } | |
5087 | ||
5088 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5089 | pps_lock(intel_dp); |
36b5f425 | 5090 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5091 | pps_unlock(intel_dp); |
ed92f0b2 | 5092 | |
060c8778 | 5093 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5094 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5095 | if (edid) { |
5096 | if (drm_add_edid_modes(connector, edid)) { | |
5097 | drm_mode_connector_update_edid_property(connector, | |
5098 | edid); | |
5099 | drm_edid_to_eld(connector, edid); | |
5100 | } else { | |
5101 | kfree(edid); | |
5102 | edid = ERR_PTR(-EINVAL); | |
5103 | } | |
5104 | } else { | |
5105 | edid = ERR_PTR(-ENOENT); | |
5106 | } | |
5107 | intel_connector->edid = edid; | |
5108 | ||
5109 | /* prefer fixed mode from EDID if available */ | |
5110 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5111 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5112 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 PB |
5113 | downclock_mode = intel_dp_drrs_init( |
5114 | intel_dig_port, | |
5115 | intel_connector, fixed_mode); | |
ed92f0b2 PZ |
5116 | break; |
5117 | } | |
5118 | } | |
5119 | ||
5120 | /* fallback to VBT if available for eDP */ | |
5121 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5122 | fixed_mode = drm_mode_duplicate(dev, | |
5123 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5124 | if (fixed_mode) | |
5125 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5126 | } | |
060c8778 | 5127 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5128 | |
01527b31 CT |
5129 | if (IS_VALLEYVIEW(dev)) { |
5130 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5131 | register_reboot_notifier(&intel_dp->edp_notifier); | |
5132 | } | |
5133 | ||
4f9db5b5 | 5134 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5135 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
ed92f0b2 PZ |
5136 | intel_panel_setup_backlight(connector); |
5137 | ||
5138 | return true; | |
5139 | } | |
5140 | ||
16c25533 | 5141 | bool |
f0fec3f2 PZ |
5142 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5143 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5144 | { |
f0fec3f2 PZ |
5145 | struct drm_connector *connector = &intel_connector->base; |
5146 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5147 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5148 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5149 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5150 | enum port port = intel_dig_port->port; |
0b99836f | 5151 | int type; |
a4fc5ed6 | 5152 | |
a4a5d2f8 VS |
5153 | intel_dp->pps_pipe = INVALID_PIPE; |
5154 | ||
ec5b01dd | 5155 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5156 | if (INTEL_INFO(dev)->gen >= 9) |
5157 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5158 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5159 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5160 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5161 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5162 | else if (HAS_PCH_SPLIT(dev)) | |
5163 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5164 | else | |
5165 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5166 | ||
b9ca5fad DL |
5167 | if (INTEL_INFO(dev)->gen >= 9) |
5168 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5169 | else | |
5170 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5171 | |
0767935e DV |
5172 | /* Preserve the current hw state. */ |
5173 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5174 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5175 | |
3b32a35b | 5176 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5177 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5178 | else |
5179 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5180 | |
f7d24902 ID |
5181 | /* |
5182 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5183 | * for DP the encoder type can be set by the caller to | |
5184 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5185 | */ | |
5186 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5187 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5188 | ||
c17ed5b5 VS |
5189 | /* eDP only on port B and/or C on vlv/chv */ |
5190 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5191 | port != PORT_B && port != PORT_C)) | |
5192 | return false; | |
5193 | ||
e7281eab ID |
5194 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5195 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5196 | port_name(port)); | |
5197 | ||
b329530c | 5198 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5199 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5200 | ||
a4fc5ed6 KP |
5201 | connector->interlace_allowed = true; |
5202 | connector->doublescan_allowed = 0; | |
5203 | ||
f0fec3f2 | 5204 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5205 | edp_panel_vdd_work); |
a4fc5ed6 | 5206 | |
df0e9248 | 5207 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5208 | drm_connector_register(connector); |
a4fc5ed6 | 5209 | |
affa9354 | 5210 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5211 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5212 | else | |
5213 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5214 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5215 | |
0b99836f | 5216 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5217 | switch (port) { |
5218 | case PORT_A: | |
1d843f9d | 5219 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5220 | break; |
5221 | case PORT_B: | |
1d843f9d | 5222 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5223 | break; |
5224 | case PORT_C: | |
1d843f9d | 5225 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5226 | break; |
5227 | case PORT_D: | |
1d843f9d | 5228 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5229 | break; |
5230 | default: | |
ad1c0b19 | 5231 | BUG(); |
5eb08b69 ZW |
5232 | } |
5233 | ||
dada1a9f | 5234 | if (is_edp(intel_dp)) { |
773538e8 | 5235 | pps_lock(intel_dp); |
a4a5d2f8 VS |
5236 | if (IS_VALLEYVIEW(dev)) { |
5237 | vlv_initial_power_sequencer_setup(intel_dp); | |
5238 | } else { | |
5239 | intel_dp_init_panel_power_timestamps(intel_dp); | |
36b5f425 | 5240 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
a4a5d2f8 | 5241 | } |
773538e8 | 5242 | pps_unlock(intel_dp); |
dada1a9f | 5243 | } |
0095e6dc | 5244 | |
9d1a1031 | 5245 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5246 | |
0e32b39c DA |
5247 | /* init MST on ports that can support it */ |
5248 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
5249 | if (port == PORT_B || port == PORT_C || port == PORT_D) { | |
a4a5d2f8 VS |
5250 | intel_dp_mst_encoder_init(intel_dig_port, |
5251 | intel_connector->base.base.id); | |
0e32b39c DA |
5252 | } |
5253 | } | |
5254 | ||
36b5f425 | 5255 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 5256 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5257 | if (is_edp(intel_dp)) { |
5258 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5259 | /* |
5260 | * vdd might still be enabled do to the delayed vdd off. | |
5261 | * Make sure vdd is actually turned off here. | |
5262 | */ | |
773538e8 | 5263 | pps_lock(intel_dp); |
4be73780 | 5264 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5265 | pps_unlock(intel_dp); |
15b1d171 | 5266 | } |
34ea3d38 | 5267 | drm_connector_unregister(connector); |
b2f246a8 | 5268 | drm_connector_cleanup(connector); |
16c25533 | 5269 | return false; |
b2f246a8 | 5270 | } |
32f9d658 | 5271 | |
f684960e CW |
5272 | intel_dp_add_properties(intel_dp, connector); |
5273 | ||
a4fc5ed6 KP |
5274 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5275 | * 0xd. Failure to do so will result in spurious interrupts being | |
5276 | * generated on the port when a cable is not attached. | |
5277 | */ | |
5278 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5279 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5280 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5281 | } | |
16c25533 PZ |
5282 | |
5283 | return true; | |
a4fc5ed6 | 5284 | } |
f0fec3f2 PZ |
5285 | |
5286 | void | |
5287 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5288 | { | |
13cf5504 | 5289 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5290 | struct intel_digital_port *intel_dig_port; |
5291 | struct intel_encoder *intel_encoder; | |
5292 | struct drm_encoder *encoder; | |
5293 | struct intel_connector *intel_connector; | |
5294 | ||
b14c5679 | 5295 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5296 | if (!intel_dig_port) |
5297 | return; | |
5298 | ||
b14c5679 | 5299 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
5300 | if (!intel_connector) { |
5301 | kfree(intel_dig_port); | |
5302 | return; | |
5303 | } | |
5304 | ||
5305 | intel_encoder = &intel_dig_port->base; | |
5306 | encoder = &intel_encoder->base; | |
5307 | ||
5308 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5309 | DRM_MODE_ENCODER_TMDS); | |
5310 | ||
5bfe2ac0 | 5311 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5312 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5313 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5314 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5315 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5316 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5317 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5318 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5319 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5320 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5321 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5322 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5323 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5324 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5325 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5326 | } else { |
ecff4f3b JN |
5327 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5328 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5329 | if (INTEL_INFO(dev)->gen >= 5) |
5330 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5331 | } |
f0fec3f2 | 5332 | |
174edf1f | 5333 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5334 | intel_dig_port->dp.output_reg = output_reg; |
5335 | ||
00c09d70 | 5336 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5337 | if (IS_CHERRYVIEW(dev)) { |
5338 | if (port == PORT_D) | |
5339 | intel_encoder->crtc_mask = 1 << 2; | |
5340 | else | |
5341 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5342 | } else { | |
5343 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5344 | } | |
bc079e8b | 5345 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5346 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5347 | ||
13cf5504 DA |
5348 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5349 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5350 | ||
15b1d171 PZ |
5351 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5352 | drm_encoder_cleanup(encoder); | |
5353 | kfree(intel_dig_port); | |
b2f246a8 | 5354 | kfree(intel_connector); |
15b1d171 | 5355 | } |
f0fec3f2 | 5356 | } |
0e32b39c DA |
5357 | |
5358 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5359 | { | |
5360 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5361 | int i; | |
5362 | ||
5363 | /* disable MST */ | |
5364 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5365 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5366 | if (!intel_dig_port) | |
5367 | continue; | |
5368 | ||
5369 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5370 | if (!intel_dig_port->dp.can_mst) | |
5371 | continue; | |
5372 | if (intel_dig_port->dp.is_mst) | |
5373 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5374 | } | |
5375 | } | |
5376 | } | |
5377 | ||
5378 | void intel_dp_mst_resume(struct drm_device *dev) | |
5379 | { | |
5380 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5381 | int i; | |
5382 | ||
5383 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5384 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5385 | if (!intel_dig_port) | |
5386 | continue; | |
5387 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5388 | int ret; | |
5389 | ||
5390 | if (!intel_dig_port->dp.can_mst) | |
5391 | continue; | |
5392 | ||
5393 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5394 | if (ret != 0) { | |
5395 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5396 | } | |
5397 | } | |
5398 | } | |
5399 | } |