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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 | 33 | #include <drm/drmP.h> |
c6f95f27 | 34 | #include <drm/drm_atomic_helper.h> |
760285e7 DH |
35 | #include <drm/drm_crtc.h> |
36 | #include <drm/drm_crtc_helper.h> | |
37 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 38 | #include "intel_drv.h" |
760285e7 | 39 | #include <drm/i915_drm.h> |
a4fc5ed6 | 40 | #include "i915_drv.h" |
a4fc5ed6 | 41 | |
a4fc5ed6 KP |
42 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
43 | ||
9dd4ffdf CML |
44 | struct dp_link_dpll { |
45 | int link_bw; | |
46 | struct dpll dpll; | |
47 | }; | |
48 | ||
49 | static const struct dp_link_dpll gen4_dpll[] = { | |
50 | { DP_LINK_BW_1_62, | |
51 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
52 | { DP_LINK_BW_2_7, | |
53 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
54 | }; | |
55 | ||
56 | static const struct dp_link_dpll pch_dpll[] = { | |
57 | { DP_LINK_BW_1_62, | |
58 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
59 | { DP_LINK_BW_2_7, | |
60 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
61 | }; | |
62 | ||
65ce4bf5 CML |
63 | static const struct dp_link_dpll vlv_dpll[] = { |
64 | { DP_LINK_BW_1_62, | |
58f6e632 | 65 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
66 | { DP_LINK_BW_2_7, |
67 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
68 | }; | |
69 | ||
ef9348c8 CML |
70 | /* |
71 | * CHV supports eDP 1.4 that have more link rates. | |
72 | * Below only provides the fixed rate but exclude variable rate. | |
73 | */ | |
74 | static const struct dp_link_dpll chv_dpll[] = { | |
75 | /* | |
76 | * CHV requires to program fractional division for m2. | |
77 | * m2 is stored in fixed point format using formula below | |
78 | * (m2_int << 22) | m2_fraction | |
79 | */ | |
80 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
81 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
82 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
83 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
84 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
85 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
86 | }; | |
a8f3ef61 | 87 | /* Skylake supports following rates */ |
f4896f15 VS |
88 | static const int gen9_rates[] = { 162000, 216000, 270000, |
89 | 324000, 432000, 540000 }; | |
fe51bfb9 VS |
90 | static const int chv_rates[] = { 162000, 202500, 210000, 216000, |
91 | 243000, 270000, 324000, 405000, | |
92 | 420000, 432000, 540000 }; | |
f4896f15 | 93 | static const int default_rates[] = { 162000, 270000, 540000 }; |
ef9348c8 | 94 | |
cfcb0fc9 JB |
95 | /** |
96 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
97 | * @intel_dp: DP struct | |
98 | * | |
99 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
100 | * will return true, and false otherwise. | |
101 | */ | |
102 | static bool is_edp(struct intel_dp *intel_dp) | |
103 | { | |
da63a9f2 PZ |
104 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
105 | ||
106 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
107 | } |
108 | ||
68b4d824 | 109 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 110 | { |
68b4d824 ID |
111 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
112 | ||
113 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
114 | } |
115 | ||
df0e9248 CW |
116 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
117 | { | |
fa90ecef | 118 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
119 | } |
120 | ||
ea5b213a | 121 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 122 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 123 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
093e3f13 | 124 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a8c3344e VS |
125 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
126 | enum pipe pipe); | |
a4fc5ed6 | 127 | |
ed4e9c1d VS |
128 | static int |
129 | intel_dp_max_link_bw(struct intel_dp *intel_dp) | |
a4fc5ed6 | 130 | { |
7183dc29 | 131 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
132 | |
133 | switch (max_link_bw) { | |
134 | case DP_LINK_BW_1_62: | |
135 | case DP_LINK_BW_2_7: | |
1db10e28 | 136 | case DP_LINK_BW_5_4: |
d4eead50 | 137 | break; |
a4fc5ed6 | 138 | default: |
d4eead50 ID |
139 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
140 | max_link_bw); | |
a4fc5ed6 KP |
141 | max_link_bw = DP_LINK_BW_1_62; |
142 | break; | |
143 | } | |
144 | return max_link_bw; | |
145 | } | |
146 | ||
eeb6324d PZ |
147 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
148 | { | |
149 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
150 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
151 | u8 source_max, sink_max; | |
152 | ||
153 | source_max = 4; | |
154 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
155 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
156 | source_max = 2; | |
157 | ||
158 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
159 | ||
160 | return min(source_max, sink_max); | |
161 | } | |
162 | ||
cd9dde44 AJ |
163 | /* |
164 | * The units on the numbers in the next two are... bizarre. Examples will | |
165 | * make it clearer; this one parallels an example in the eDP spec. | |
166 | * | |
167 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
168 | * | |
169 | * 270000 * 1 * 8 / 10 == 216000 | |
170 | * | |
171 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
172 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
173 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
174 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
175 | * | |
176 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
177 | * get the result in decakilobits instead of kilobits. | |
178 | */ | |
179 | ||
a4fc5ed6 | 180 | static int |
c898261c | 181 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 182 | { |
cd9dde44 | 183 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
184 | } |
185 | ||
fe27d53e DA |
186 | static int |
187 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
188 | { | |
189 | return (max_link_clock * max_lanes * 8) / 10; | |
190 | } | |
191 | ||
c19de8eb | 192 | static enum drm_mode_status |
a4fc5ed6 KP |
193 | intel_dp_mode_valid(struct drm_connector *connector, |
194 | struct drm_display_mode *mode) | |
195 | { | |
df0e9248 | 196 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
197 | struct intel_connector *intel_connector = to_intel_connector(connector); |
198 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
199 | int target_clock = mode->clock; |
200 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 201 | |
dd06f90e JN |
202 | if (is_edp(intel_dp) && fixed_mode) { |
203 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
204 | return MODE_PANEL; |
205 | ||
dd06f90e | 206 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 207 | return MODE_PANEL; |
03afc4a2 DV |
208 | |
209 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
210 | } |
211 | ||
50fec21a | 212 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 213 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
214 | |
215 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
216 | mode_rate = intel_dp_link_required(target_clock, 18); | |
217 | ||
218 | if (mode_rate > max_rate) | |
c4867936 | 219 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
220 | |
221 | if (mode->clock < 10000) | |
222 | return MODE_CLOCK_LOW; | |
223 | ||
0af78a2b DV |
224 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
225 | return MODE_H_ILLEGAL; | |
226 | ||
a4fc5ed6 KP |
227 | return MODE_OK; |
228 | } | |
229 | ||
a4f1289e | 230 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
231 | { |
232 | int i; | |
233 | uint32_t v = 0; | |
234 | ||
235 | if (src_bytes > 4) | |
236 | src_bytes = 4; | |
237 | for (i = 0; i < src_bytes; i++) | |
238 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
239 | return v; | |
240 | } | |
241 | ||
c2af70e2 | 242 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
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 | ||
961a0db0 VS |
324 | static void |
325 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
326 | { | |
327 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
328 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
329 | struct drm_i915_private *dev_priv = dev->dev_private; | |
330 | enum pipe pipe = intel_dp->pps_pipe; | |
d288f65f | 331 | bool pll_enabled; |
961a0db0 VS |
332 | uint32_t DP; |
333 | ||
334 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
335 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
336 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
337 | return; | |
338 | ||
339 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
340 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
341 | ||
342 | /* Preserve the BIOS-computed detected bit. This is | |
343 | * supposed to be read-only. | |
344 | */ | |
345 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
346 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
347 | DP |= DP_PORT_WIDTH(1); | |
348 | DP |= DP_LINK_TRAIN_PAT_1; | |
349 | ||
350 | if (IS_CHERRYVIEW(dev)) | |
351 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
352 | else if (pipe == PIPE_B) | |
353 | DP |= DP_PIPEB_SELECT; | |
354 | ||
d288f65f VS |
355 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
356 | ||
357 | /* | |
358 | * The DPLL for the pipe must be enabled for this to work. | |
359 | * So enable temporarily it if it's not already enabled. | |
360 | */ | |
361 | if (!pll_enabled) | |
362 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? | |
363 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); | |
364 | ||
961a0db0 VS |
365 | /* |
366 | * Similar magic as in intel_dp_enable_port(). | |
367 | * We _must_ do this port enable + disable trick | |
368 | * to make this power seqeuencer lock onto the port. | |
369 | * Otherwise even VDD force bit won't work. | |
370 | */ | |
371 | I915_WRITE(intel_dp->output_reg, DP); | |
372 | POSTING_READ(intel_dp->output_reg); | |
373 | ||
374 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
375 | POSTING_READ(intel_dp->output_reg); | |
376 | ||
377 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
378 | POSTING_READ(intel_dp->output_reg); | |
d288f65f VS |
379 | |
380 | if (!pll_enabled) | |
381 | vlv_force_pll_off(dev, pipe); | |
961a0db0 VS |
382 | } |
383 | ||
bf13e81b JN |
384 | static enum pipe |
385 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
386 | { | |
387 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
388 | struct drm_device *dev = intel_dig_port->base.base.dev; |
389 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
390 | struct intel_encoder *encoder; |
391 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 392 | enum pipe pipe; |
bf13e81b | 393 | |
e39b999a | 394 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 395 | |
a8c3344e VS |
396 | /* We should never land here with regular DP ports */ |
397 | WARN_ON(!is_edp(intel_dp)); | |
398 | ||
a4a5d2f8 VS |
399 | if (intel_dp->pps_pipe != INVALID_PIPE) |
400 | return intel_dp->pps_pipe; | |
401 | ||
402 | /* | |
403 | * We don't have power sequencer currently. | |
404 | * Pick one that's not used by other ports. | |
405 | */ | |
406 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
407 | base.head) { | |
408 | struct intel_dp *tmp; | |
409 | ||
410 | if (encoder->type != INTEL_OUTPUT_EDP) | |
411 | continue; | |
412 | ||
413 | tmp = enc_to_intel_dp(&encoder->base); | |
414 | ||
415 | if (tmp->pps_pipe != INVALID_PIPE) | |
416 | pipes &= ~(1 << tmp->pps_pipe); | |
417 | } | |
418 | ||
419 | /* | |
420 | * Didn't find one. This should not happen since there | |
421 | * are two power sequencers and up to two eDP ports. | |
422 | */ | |
423 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
424 | pipe = PIPE_A; |
425 | else | |
426 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 427 | |
a8c3344e VS |
428 | vlv_steal_power_sequencer(dev, pipe); |
429 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
430 | |
431 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
432 | pipe_name(intel_dp->pps_pipe), | |
433 | port_name(intel_dig_port->port)); | |
434 | ||
435 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
436 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
437 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 438 | |
961a0db0 VS |
439 | /* |
440 | * Even vdd force doesn't work until we've made | |
441 | * the power sequencer lock in on the port. | |
442 | */ | |
443 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
444 | |
445 | return intel_dp->pps_pipe; | |
446 | } | |
447 | ||
6491ab27 VS |
448 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
449 | enum pipe pipe); | |
450 | ||
451 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
452 | enum pipe pipe) | |
453 | { | |
454 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
455 | } | |
456 | ||
457 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
458 | enum pipe pipe) | |
459 | { | |
460 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
461 | } | |
462 | ||
463 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
464 | enum pipe pipe) | |
465 | { | |
466 | return true; | |
467 | } | |
bf13e81b | 468 | |
a4a5d2f8 | 469 | static enum pipe |
6491ab27 VS |
470 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
471 | enum port port, | |
472 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
473 | { |
474 | enum pipe pipe; | |
bf13e81b | 475 | |
bf13e81b JN |
476 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
477 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
478 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
479 | |
480 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
481 | continue; | |
482 | ||
6491ab27 VS |
483 | if (!pipe_check(dev_priv, pipe)) |
484 | continue; | |
485 | ||
a4a5d2f8 | 486 | return pipe; |
bf13e81b JN |
487 | } |
488 | ||
a4a5d2f8 VS |
489 | return INVALID_PIPE; |
490 | } | |
491 | ||
492 | static void | |
493 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
494 | { | |
495 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
496 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
497 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
498 | enum port port = intel_dig_port->port; |
499 | ||
500 | lockdep_assert_held(&dev_priv->pps_mutex); | |
501 | ||
502 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
503 | /* first pick one where the panel is on */ |
504 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
505 | vlv_pipe_has_pp_on); | |
506 | /* didn't find one? pick one where vdd is on */ | |
507 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
508 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
509 | vlv_pipe_has_vdd_on); | |
510 | /* didn't find one? pick one with just the correct port */ | |
511 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
512 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
513 | vlv_pipe_any); | |
a4a5d2f8 VS |
514 | |
515 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
516 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
517 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
518 | port_name(port)); | |
519 | return; | |
bf13e81b JN |
520 | } |
521 | ||
a4a5d2f8 VS |
522 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
523 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
524 | ||
36b5f425 VS |
525 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
526 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
527 | } |
528 | ||
773538e8 VS |
529 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
530 | { | |
531 | struct drm_device *dev = dev_priv->dev; | |
532 | struct intel_encoder *encoder; | |
533 | ||
534 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
535 | return; | |
536 | ||
537 | /* | |
538 | * We can't grab pps_mutex here due to deadlock with power_domain | |
539 | * mutex when power_domain functions are called while holding pps_mutex. | |
540 | * That also means that in order to use pps_pipe the code needs to | |
541 | * hold both a power domain reference and pps_mutex, and the power domain | |
542 | * reference get/put must be done while _not_ holding pps_mutex. | |
543 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
544 | * should use them always. | |
545 | */ | |
546 | ||
547 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
548 | struct intel_dp *intel_dp; | |
549 | ||
550 | if (encoder->type != INTEL_OUTPUT_EDP) | |
551 | continue; | |
552 | ||
553 | intel_dp = enc_to_intel_dp(&encoder->base); | |
554 | intel_dp->pps_pipe = INVALID_PIPE; | |
555 | } | |
bf13e81b JN |
556 | } |
557 | ||
558 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
559 | { | |
560 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
561 | ||
562 | if (HAS_PCH_SPLIT(dev)) | |
563 | return PCH_PP_CONTROL; | |
564 | else | |
565 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
566 | } | |
567 | ||
568 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
569 | { | |
570 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
571 | ||
572 | if (HAS_PCH_SPLIT(dev)) | |
573 | return PCH_PP_STATUS; | |
574 | else | |
575 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
576 | } | |
577 | ||
01527b31 CT |
578 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
579 | This function only applicable when panel PM state is not to be tracked */ | |
580 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
581 | void *unused) | |
582 | { | |
583 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
584 | edp_notifier); | |
585 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
586 | struct drm_i915_private *dev_priv = dev->dev_private; | |
587 | u32 pp_div; | |
588 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
589 | |
590 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
591 | return 0; | |
592 | ||
773538e8 | 593 | pps_lock(intel_dp); |
e39b999a | 594 | |
01527b31 | 595 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
596 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
597 | ||
01527b31 CT |
598 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
599 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
600 | pp_div = I915_READ(pp_div_reg); | |
601 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
602 | ||
603 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
604 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
605 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
606 | msleep(intel_dp->panel_power_cycle_delay); | |
607 | } | |
608 | ||
773538e8 | 609 | pps_unlock(intel_dp); |
e39b999a | 610 | |
01527b31 CT |
611 | return 0; |
612 | } | |
613 | ||
4be73780 | 614 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 615 | { |
30add22d | 616 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
617 | struct drm_i915_private *dev_priv = dev->dev_private; |
618 | ||
e39b999a VS |
619 | lockdep_assert_held(&dev_priv->pps_mutex); |
620 | ||
9a42356b VS |
621 | if (IS_VALLEYVIEW(dev) && |
622 | intel_dp->pps_pipe == INVALID_PIPE) | |
623 | return false; | |
624 | ||
bf13e81b | 625 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
626 | } |
627 | ||
4be73780 | 628 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 629 | { |
30add22d | 630 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
631 | struct drm_i915_private *dev_priv = dev->dev_private; |
632 | ||
e39b999a VS |
633 | lockdep_assert_held(&dev_priv->pps_mutex); |
634 | ||
9a42356b VS |
635 | if (IS_VALLEYVIEW(dev) && |
636 | intel_dp->pps_pipe == INVALID_PIPE) | |
637 | return false; | |
638 | ||
773538e8 | 639 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
640 | } |
641 | ||
9b984dae KP |
642 | static void |
643 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
644 | { | |
30add22d | 645 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 646 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 647 | |
9b984dae KP |
648 | if (!is_edp(intel_dp)) |
649 | return; | |
453c5420 | 650 | |
4be73780 | 651 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
652 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
653 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
654 | I915_READ(_pp_stat_reg(intel_dp)), |
655 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
656 | } |
657 | } | |
658 | ||
9ee32fea DV |
659 | static uint32_t |
660 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
661 | { | |
662 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
663 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
664 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 665 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
666 | uint32_t status; |
667 | bool done; | |
668 | ||
ef04f00d | 669 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 670 | if (has_aux_irq) |
b18ac466 | 671 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 672 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
673 | else |
674 | done = wait_for_atomic(C, 10) == 0; | |
675 | if (!done) | |
676 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
677 | has_aux_irq); | |
678 | #undef C | |
679 | ||
680 | return status; | |
681 | } | |
682 | ||
ec5b01dd | 683 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 684 | { |
174edf1f PZ |
685 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
686 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 687 | |
ec5b01dd DL |
688 | /* |
689 | * The clock divider is based off the hrawclk, and would like to run at | |
690 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 691 | */ |
ec5b01dd DL |
692 | return index ? 0 : intel_hrawclk(dev) / 2; |
693 | } | |
694 | ||
695 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
696 | { | |
697 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
698 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
469d4b2a | 699 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd DL |
700 | |
701 | if (index) | |
702 | return 0; | |
703 | ||
704 | if (intel_dig_port->port == PORT_A) { | |
469d4b2a | 705 | return DIV_ROUND_UP(dev_priv->display.get_display_clock_speed(dev), 2000); |
ec5b01dd DL |
706 | } else { |
707 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
708 | } | |
709 | } | |
710 | ||
711 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
712 | { | |
713 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
714 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
715 | struct drm_i915_private *dev_priv = dev->dev_private; | |
716 | ||
717 | if (intel_dig_port->port == PORT_A) { | |
718 | if (index) | |
719 | return 0; | |
1652d19e | 720 | return DIV_ROUND_CLOSEST(dev_priv->display.get_display_clock_speed(dev), 2000); |
2c55c336 JN |
721 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
722 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
723 | switch (index) { |
724 | case 0: return 63; | |
725 | case 1: return 72; | |
726 | default: return 0; | |
727 | } | |
ec5b01dd | 728 | } else { |
bc86625a | 729 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 730 | } |
b84a1cf8 RV |
731 | } |
732 | ||
ec5b01dd DL |
733 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
734 | { | |
735 | return index ? 0 : 100; | |
736 | } | |
737 | ||
b6b5e383 DL |
738 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
739 | { | |
740 | /* | |
741 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
742 | * derive the clock from CDCLK automatically). We still implement the | |
743 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
744 | */ | |
745 | return index ? 0 : 1; | |
746 | } | |
747 | ||
5ed12a19 DL |
748 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
749 | bool has_aux_irq, | |
750 | int send_bytes, | |
751 | uint32_t aux_clock_divider) | |
752 | { | |
753 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
754 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
755 | uint32_t precharge, timeout; | |
756 | ||
757 | if (IS_GEN6(dev)) | |
758 | precharge = 3; | |
759 | else | |
760 | precharge = 5; | |
761 | ||
762 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
763 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
764 | else | |
765 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
766 | ||
767 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 768 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 769 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 770 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 771 | timeout | |
788d4433 | 772 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
773 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
774 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 775 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
776 | } |
777 | ||
b9ca5fad DL |
778 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
779 | bool has_aux_irq, | |
780 | int send_bytes, | |
781 | uint32_t unused) | |
782 | { | |
783 | return DP_AUX_CH_CTL_SEND_BUSY | | |
784 | DP_AUX_CH_CTL_DONE | | |
785 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
786 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
787 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
788 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
789 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
790 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
791 | } | |
792 | ||
b84a1cf8 RV |
793 | static int |
794 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 795 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
796 | uint8_t *recv, int recv_size) |
797 | { | |
798 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
799 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
800 | struct drm_i915_private *dev_priv = dev->dev_private; | |
801 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
802 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 803 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
804 | int i, ret, recv_bytes; |
805 | uint32_t status; | |
5ed12a19 | 806 | int try, clock = 0; |
4e6b788c | 807 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
808 | bool vdd; |
809 | ||
773538e8 | 810 | pps_lock(intel_dp); |
e39b999a | 811 | |
72c3500a VS |
812 | /* |
813 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
814 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
815 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
816 | * ourselves. | |
817 | */ | |
1e0560e0 | 818 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
819 | |
820 | /* dp aux is extremely sensitive to irq latency, hence request the | |
821 | * lowest possible wakeup latency and so prevent the cpu from going into | |
822 | * deep sleep states. | |
823 | */ | |
824 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
825 | ||
826 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 827 | |
c67a470b PZ |
828 | intel_aux_display_runtime_get(dev_priv); |
829 | ||
11bee43e JB |
830 | /* Try to wait for any previous AUX channel activity */ |
831 | for (try = 0; try < 3; try++) { | |
ef04f00d | 832 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
833 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
834 | break; | |
835 | msleep(1); | |
836 | } | |
837 | ||
838 | if (try == 3) { | |
839 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
840 | I915_READ(ch_ctl)); | |
9ee32fea DV |
841 | ret = -EBUSY; |
842 | goto out; | |
4f7f7b7e CW |
843 | } |
844 | ||
46a5ae9f PZ |
845 | /* Only 5 data registers! */ |
846 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
847 | ret = -E2BIG; | |
848 | goto out; | |
849 | } | |
850 | ||
ec5b01dd | 851 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
852 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
853 | has_aux_irq, | |
854 | send_bytes, | |
855 | aux_clock_divider); | |
5ed12a19 | 856 | |
bc86625a CW |
857 | /* Must try at least 3 times according to DP spec */ |
858 | for (try = 0; try < 5; try++) { | |
859 | /* Load the send data into the aux channel data registers */ | |
860 | for (i = 0; i < send_bytes; i += 4) | |
861 | I915_WRITE(ch_data + i, | |
a4f1289e RV |
862 | intel_dp_pack_aux(send + i, |
863 | send_bytes - i)); | |
bc86625a CW |
864 | |
865 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 866 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
867 | |
868 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
869 | ||
870 | /* Clear done status and any errors */ | |
871 | I915_WRITE(ch_ctl, | |
872 | status | | |
873 | DP_AUX_CH_CTL_DONE | | |
874 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
875 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
876 | ||
877 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
878 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
879 | continue; | |
880 | if (status & DP_AUX_CH_CTL_DONE) | |
881 | break; | |
882 | } | |
4f7f7b7e | 883 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
884 | break; |
885 | } | |
886 | ||
a4fc5ed6 | 887 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 888 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
889 | ret = -EBUSY; |
890 | goto out; | |
a4fc5ed6 KP |
891 | } |
892 | ||
893 | /* Check for timeout or receive error. | |
894 | * Timeouts occur when the sink is not connected | |
895 | */ | |
a5b3da54 | 896 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 897 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
898 | ret = -EIO; |
899 | goto out; | |
a5b3da54 | 900 | } |
1ae8c0a5 KP |
901 | |
902 | /* Timeouts occur when the device isn't connected, so they're | |
903 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 904 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 905 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
906 | ret = -ETIMEDOUT; |
907 | goto out; | |
a4fc5ed6 KP |
908 | } |
909 | ||
910 | /* Unload any bytes sent back from the other side */ | |
911 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
912 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
913 | if (recv_bytes > recv_size) |
914 | recv_bytes = recv_size; | |
0206e353 | 915 | |
4f7f7b7e | 916 | for (i = 0; i < recv_bytes; i += 4) |
a4f1289e RV |
917 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
918 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 919 | |
9ee32fea DV |
920 | ret = recv_bytes; |
921 | out: | |
922 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 923 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 924 | |
884f19e9 JN |
925 | if (vdd) |
926 | edp_panel_vdd_off(intel_dp, false); | |
927 | ||
773538e8 | 928 | pps_unlock(intel_dp); |
e39b999a | 929 | |
9ee32fea | 930 | return ret; |
a4fc5ed6 KP |
931 | } |
932 | ||
a6c8aff0 JN |
933 | #define BARE_ADDRESS_SIZE 3 |
934 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
935 | static ssize_t |
936 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 937 | { |
9d1a1031 JN |
938 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
939 | uint8_t txbuf[20], rxbuf[20]; | |
940 | size_t txsize, rxsize; | |
a4fc5ed6 | 941 | int ret; |
a4fc5ed6 | 942 | |
d2d9cbbd VS |
943 | txbuf[0] = (msg->request << 4) | |
944 | ((msg->address >> 16) & 0xf); | |
945 | txbuf[1] = (msg->address >> 8) & 0xff; | |
9d1a1031 JN |
946 | txbuf[2] = msg->address & 0xff; |
947 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 948 | |
9d1a1031 JN |
949 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
950 | case DP_AUX_NATIVE_WRITE: | |
951 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 952 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
a1ddefd8 | 953 | rxsize = 2; /* 0 or 1 data bytes */ |
f51a44b9 | 954 | |
9d1a1031 JN |
955 | if (WARN_ON(txsize > 20)) |
956 | return -E2BIG; | |
a4fc5ed6 | 957 | |
9d1a1031 | 958 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 959 | |
9d1a1031 JN |
960 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
961 | if (ret > 0) { | |
962 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 963 | |
a1ddefd8 JN |
964 | if (ret > 1) { |
965 | /* Number of bytes written in a short write. */ | |
966 | ret = clamp_t(int, rxbuf[1], 0, msg->size); | |
967 | } else { | |
968 | /* Return payload size. */ | |
969 | ret = msg->size; | |
970 | } | |
9d1a1031 JN |
971 | } |
972 | break; | |
46a5ae9f | 973 | |
9d1a1031 JN |
974 | case DP_AUX_NATIVE_READ: |
975 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 976 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 977 | rxsize = msg->size + 1; |
a4fc5ed6 | 978 | |
9d1a1031 JN |
979 | if (WARN_ON(rxsize > 20)) |
980 | return -E2BIG; | |
a4fc5ed6 | 981 | |
9d1a1031 JN |
982 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
983 | if (ret > 0) { | |
984 | msg->reply = rxbuf[0] >> 4; | |
985 | /* | |
986 | * Assume happy day, and copy the data. The caller is | |
987 | * expected to check msg->reply before touching it. | |
988 | * | |
989 | * Return payload size. | |
990 | */ | |
991 | ret--; | |
992 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 993 | } |
9d1a1031 JN |
994 | break; |
995 | ||
996 | default: | |
997 | ret = -EINVAL; | |
998 | break; | |
a4fc5ed6 | 999 | } |
f51a44b9 | 1000 | |
9d1a1031 | 1001 | return ret; |
a4fc5ed6 KP |
1002 | } |
1003 | ||
9d1a1031 JN |
1004 | static void |
1005 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
1006 | { | |
1007 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
1008 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1009 | enum port port = intel_dig_port->port; | |
0b99836f | 1010 | const char *name = NULL; |
ab2c0672 DA |
1011 | int ret; |
1012 | ||
33ad6626 JN |
1013 | switch (port) { |
1014 | case PORT_A: | |
1015 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 1016 | name = "DPDDC-A"; |
ab2c0672 | 1017 | break; |
33ad6626 JN |
1018 | case PORT_B: |
1019 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 1020 | name = "DPDDC-B"; |
ab2c0672 | 1021 | break; |
33ad6626 JN |
1022 | case PORT_C: |
1023 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 1024 | name = "DPDDC-C"; |
ab2c0672 | 1025 | break; |
33ad6626 JN |
1026 | case PORT_D: |
1027 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 1028 | name = "DPDDC-D"; |
33ad6626 JN |
1029 | break; |
1030 | default: | |
1031 | BUG(); | |
ab2c0672 DA |
1032 | } |
1033 | ||
1b1aad75 DL |
1034 | /* |
1035 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
1036 | * | |
1037 | * On Haswell and Broadwell though: | |
1038 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
1039 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
1040 | * | |
1041 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
1042 | */ | |
1043 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) | |
33ad6626 | 1044 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 1045 | |
0b99836f | 1046 | intel_dp->aux.name = name; |
9d1a1031 JN |
1047 | intel_dp->aux.dev = dev->dev; |
1048 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 1049 | |
0b99836f JN |
1050 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1051 | connector->base.kdev->kobj.name); | |
8316f337 | 1052 | |
4f71d0cb | 1053 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 1054 | if (ret < 0) { |
4f71d0cb | 1055 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
1056 | name, ret); |
1057 | return; | |
ab2c0672 | 1058 | } |
8a5e6aeb | 1059 | |
0b99836f JN |
1060 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
1061 | &intel_dp->aux.ddc.dev.kobj, | |
1062 | intel_dp->aux.ddc.dev.kobj.name); | |
1063 | if (ret < 0) { | |
1064 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 1065 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 1066 | } |
a4fc5ed6 KP |
1067 | } |
1068 | ||
80f65de3 ID |
1069 | static void |
1070 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
1071 | { | |
1072 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
1073 | ||
0e32b39c DA |
1074 | if (!intel_connector->mst_port) |
1075 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
1076 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
1077 | intel_connector_unregister(intel_connector); |
1078 | } | |
1079 | ||
5416d871 | 1080 | static void |
c3346ef6 | 1081 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config, int link_clock) |
5416d871 DL |
1082 | { |
1083 | u32 ctrl1; | |
1084 | ||
1085 | pipe_config->ddi_pll_sel = SKL_DPLL0; | |
1086 | pipe_config->dpll_hw_state.cfgcr1 = 0; | |
1087 | pipe_config->dpll_hw_state.cfgcr2 = 0; | |
1088 | ||
1089 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
c3346ef6 SJ |
1090 | switch (link_clock / 2) { |
1091 | case 81000: | |
5416d871 DL |
1092 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_810, |
1093 | SKL_DPLL0); | |
1094 | break; | |
c3346ef6 | 1095 | case 135000: |
5416d871 DL |
1096 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1350, |
1097 | SKL_DPLL0); | |
1098 | break; | |
c3346ef6 | 1099 | case 270000: |
5416d871 DL |
1100 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2700, |
1101 | SKL_DPLL0); | |
1102 | break; | |
c3346ef6 SJ |
1103 | case 162000: |
1104 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1620, | |
1105 | SKL_DPLL0); | |
1106 | break; | |
1107 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which | |
1108 | results in CDCLK change. Need to handle the change of CDCLK by | |
1109 | disabling pipes and re-enabling them */ | |
1110 | case 108000: | |
1111 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1080, | |
1112 | SKL_DPLL0); | |
1113 | break; | |
1114 | case 216000: | |
1115 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2160, | |
1116 | SKL_DPLL0); | |
1117 | break; | |
1118 | ||
5416d871 DL |
1119 | } |
1120 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; | |
1121 | } | |
1122 | ||
0e50338c | 1123 | static void |
5cec258b | 1124 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config, int link_bw) |
0e50338c DV |
1125 | { |
1126 | switch (link_bw) { | |
1127 | case DP_LINK_BW_1_62: | |
1128 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
1129 | break; | |
1130 | case DP_LINK_BW_2_7: | |
1131 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
1132 | break; | |
1133 | case DP_LINK_BW_5_4: | |
1134 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
1135 | break; | |
1136 | } | |
1137 | } | |
1138 | ||
fc0f8e25 | 1139 | static int |
12f6a2e2 | 1140 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
fc0f8e25 | 1141 | { |
94ca719e VS |
1142 | if (intel_dp->num_sink_rates) { |
1143 | *sink_rates = intel_dp->sink_rates; | |
1144 | return intel_dp->num_sink_rates; | |
fc0f8e25 | 1145 | } |
12f6a2e2 VS |
1146 | |
1147 | *sink_rates = default_rates; | |
1148 | ||
1149 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
fc0f8e25 SJ |
1150 | } |
1151 | ||
a8f3ef61 | 1152 | static int |
1db10e28 | 1153 | intel_dp_source_rates(struct drm_device *dev, const int **source_rates) |
a8f3ef61 | 1154 | { |
636280ba VS |
1155 | if (INTEL_INFO(dev)->gen >= 9) { |
1156 | *source_rates = gen9_rates; | |
1157 | return ARRAY_SIZE(gen9_rates); | |
fe51bfb9 VS |
1158 | } else if (IS_CHERRYVIEW(dev)) { |
1159 | *source_rates = chv_rates; | |
1160 | return ARRAY_SIZE(chv_rates); | |
a8f3ef61 | 1161 | } |
636280ba VS |
1162 | |
1163 | *source_rates = default_rates; | |
1164 | ||
1db10e28 VS |
1165 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) |
1166 | /* WaDisableHBR2:skl */ | |
1167 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
1168 | else if (INTEL_INFO(dev)->gen >= 8 || | |
1169 | (IS_HASWELL(dev) && !IS_HSW_ULX(dev))) | |
1170 | return (DP_LINK_BW_5_4 >> 3) + 1; | |
1171 | else | |
1172 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
a8f3ef61 SJ |
1173 | } |
1174 | ||
c6bb3538 DV |
1175 | static void |
1176 | intel_dp_set_clock(struct intel_encoder *encoder, | |
5cec258b | 1177 | struct intel_crtc_state *pipe_config, int link_bw) |
c6bb3538 DV |
1178 | { |
1179 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1180 | const struct dp_link_dpll *divisor = NULL; |
1181 | int i, count = 0; | |
c6bb3538 DV |
1182 | |
1183 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1184 | divisor = gen4_dpll; |
1185 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1186 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1187 | divisor = pch_dpll; |
1188 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1189 | } else if (IS_CHERRYVIEW(dev)) { |
1190 | divisor = chv_dpll; | |
1191 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1192 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1193 | divisor = vlv_dpll; |
1194 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1195 | } |
9dd4ffdf CML |
1196 | |
1197 | if (divisor && count) { | |
1198 | for (i = 0; i < count; i++) { | |
1199 | if (link_bw == divisor[i].link_bw) { | |
1200 | pipe_config->dpll = divisor[i].dpll; | |
1201 | pipe_config->clock_set = true; | |
1202 | break; | |
1203 | } | |
1204 | } | |
c6bb3538 DV |
1205 | } |
1206 | } | |
1207 | ||
2ecae76a VS |
1208 | static int intersect_rates(const int *source_rates, int source_len, |
1209 | const int *sink_rates, int sink_len, | |
94ca719e | 1210 | int *common_rates) |
a8f3ef61 SJ |
1211 | { |
1212 | int i = 0, j = 0, k = 0; | |
1213 | ||
a8f3ef61 SJ |
1214 | while (i < source_len && j < sink_len) { |
1215 | if (source_rates[i] == sink_rates[j]) { | |
e6bda3e4 VS |
1216 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) |
1217 | return k; | |
94ca719e | 1218 | common_rates[k] = source_rates[i]; |
a8f3ef61 SJ |
1219 | ++k; |
1220 | ++i; | |
1221 | ++j; | |
1222 | } else if (source_rates[i] < sink_rates[j]) { | |
1223 | ++i; | |
1224 | } else { | |
1225 | ++j; | |
1226 | } | |
1227 | } | |
1228 | return k; | |
1229 | } | |
1230 | ||
94ca719e VS |
1231 | static int intel_dp_common_rates(struct intel_dp *intel_dp, |
1232 | int *common_rates) | |
2ecae76a VS |
1233 | { |
1234 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1235 | const int *source_rates, *sink_rates; | |
1236 | int source_len, sink_len; | |
1237 | ||
1238 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1239 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1240 | ||
1241 | return intersect_rates(source_rates, source_len, | |
1242 | sink_rates, sink_len, | |
94ca719e | 1243 | common_rates); |
2ecae76a VS |
1244 | } |
1245 | ||
0336400e VS |
1246 | static void snprintf_int_array(char *str, size_t len, |
1247 | const int *array, int nelem) | |
1248 | { | |
1249 | int i; | |
1250 | ||
1251 | str[0] = '\0'; | |
1252 | ||
1253 | for (i = 0; i < nelem; i++) { | |
1254 | int r = snprintf(str, len, "%d,", array[i]); | |
1255 | if (r >= len) | |
1256 | return; | |
1257 | str += r; | |
1258 | len -= r; | |
1259 | } | |
1260 | } | |
1261 | ||
1262 | static void intel_dp_print_rates(struct intel_dp *intel_dp) | |
1263 | { | |
1264 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1265 | const int *source_rates, *sink_rates; | |
94ca719e VS |
1266 | int source_len, sink_len, common_len; |
1267 | int common_rates[DP_MAX_SUPPORTED_RATES]; | |
0336400e VS |
1268 | char str[128]; /* FIXME: too big for stack? */ |
1269 | ||
1270 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1271 | return; | |
1272 | ||
1273 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1274 | snprintf_int_array(str, sizeof(str), source_rates, source_len); | |
1275 | DRM_DEBUG_KMS("source rates: %s\n", str); | |
1276 | ||
1277 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1278 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); | |
1279 | DRM_DEBUG_KMS("sink rates: %s\n", str); | |
1280 | ||
94ca719e VS |
1281 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1282 | snprintf_int_array(str, sizeof(str), common_rates, common_len); | |
1283 | DRM_DEBUG_KMS("common rates: %s\n", str); | |
0336400e VS |
1284 | } |
1285 | ||
f4896f15 | 1286 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1287 | { |
1288 | int i = 0; | |
1289 | ||
1290 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1291 | if (find == rates[i]) | |
1292 | break; | |
1293 | ||
1294 | return i; | |
1295 | } | |
1296 | ||
50fec21a VS |
1297 | int |
1298 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1299 | { | |
1300 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1301 | int len; | |
1302 | ||
94ca719e | 1303 | len = intel_dp_common_rates(intel_dp, rates); |
50fec21a VS |
1304 | if (WARN_ON(len <= 0)) |
1305 | return 162000; | |
1306 | ||
1307 | return rates[rate_to_index(0, rates) - 1]; | |
1308 | } | |
1309 | ||
ed4e9c1d VS |
1310 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1311 | { | |
94ca719e | 1312 | return rate_to_index(rate, intel_dp->sink_rates); |
ed4e9c1d VS |
1313 | } |
1314 | ||
00c09d70 | 1315 | bool |
5bfe2ac0 | 1316 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1317 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1318 | { |
5bfe2ac0 | 1319 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1320 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1321 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1322 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1323 | enum port port = dp_to_dig_port(intel_dp)->port; |
84556d58 | 1324 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
dd06f90e | 1325 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1326 | int lane_count, clock; |
56071a20 | 1327 | int min_lane_count = 1; |
eeb6324d | 1328 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1329 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1330 | int min_clock = 0; |
a8f3ef61 | 1331 | int max_clock; |
083f9560 | 1332 | int bpp, mode_rate; |
ff9a6750 | 1333 | int link_avail, link_clock; |
94ca719e VS |
1334 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1335 | int common_len; | |
a8f3ef61 | 1336 | |
94ca719e | 1337 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
a8f3ef61 SJ |
1338 | |
1339 | /* No common link rates between source and sink */ | |
94ca719e | 1340 | WARN_ON(common_len <= 0); |
a8f3ef61 | 1341 | |
94ca719e | 1342 | max_clock = common_len - 1; |
a4fc5ed6 | 1343 | |
bc7d38a4 | 1344 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1345 | pipe_config->has_pch_encoder = true; |
1346 | ||
03afc4a2 | 1347 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1348 | pipe_config->has_drrs = false; |
9ed109a7 | 1349 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 1350 | |
dd06f90e JN |
1351 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1352 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1353 | adjusted_mode); | |
a1b2278e CK |
1354 | |
1355 | if (INTEL_INFO(dev)->gen >= 9) { | |
1356 | int ret; | |
1357 | ret = skl_update_scaler_users(intel_crtc, pipe_config, NULL, NULL, 0); | |
1358 | if (ret) | |
1359 | return ret; | |
1360 | } | |
1361 | ||
2dd24552 JB |
1362 | if (!HAS_PCH_SPLIT(dev)) |
1363 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1364 | intel_connector->panel.fitting_mode); | |
1365 | else | |
b074cec8 JB |
1366 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1367 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1368 | } |
1369 | ||
cb1793ce | 1370 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1371 | return false; |
1372 | ||
083f9560 | 1373 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 | 1374 | "max bw %d pixel clock %iKHz\n", |
94ca719e | 1375 | max_lane_count, common_rates[max_clock], |
241bfc38 | 1376 | adjusted_mode->crtc_clock); |
083f9560 | 1377 | |
36008365 DV |
1378 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1379 | * bpc in between. */ | |
3e7ca985 | 1380 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1381 | if (is_edp(intel_dp)) { |
1382 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1383 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1384 | dev_priv->vbt.edp_bpp); | |
1385 | bpp = dev_priv->vbt.edp_bpp; | |
1386 | } | |
1387 | ||
344c5bbc JN |
1388 | /* |
1389 | * Use the maximum clock and number of lanes the eDP panel | |
1390 | * advertizes being capable of. The panels are generally | |
1391 | * designed to support only a single clock and lane | |
1392 | * configuration, and typically these values correspond to the | |
1393 | * native resolution of the panel. | |
1394 | */ | |
1395 | min_lane_count = max_lane_count; | |
1396 | min_clock = max_clock; | |
7984211e | 1397 | } |
657445fe | 1398 | |
36008365 | 1399 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1400 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1401 | bpp); | |
36008365 | 1402 | |
c6930992 | 1403 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1404 | for (lane_count = min_lane_count; |
1405 | lane_count <= max_lane_count; | |
1406 | lane_count <<= 1) { | |
1407 | ||
94ca719e | 1408 | link_clock = common_rates[clock]; |
36008365 DV |
1409 | link_avail = intel_dp_max_data_rate(link_clock, |
1410 | lane_count); | |
1411 | ||
1412 | if (mode_rate <= link_avail) { | |
1413 | goto found; | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | } | |
c4867936 | 1418 | |
36008365 | 1419 | return false; |
3685a8f3 | 1420 | |
36008365 | 1421 | found: |
55bc60db VS |
1422 | if (intel_dp->color_range_auto) { |
1423 | /* | |
1424 | * See: | |
1425 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1426 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1427 | */ | |
18316c8c | 1428 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1429 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1430 | else | |
1431 | intel_dp->color_range = 0; | |
1432 | } | |
1433 | ||
3685a8f3 | 1434 | if (intel_dp->color_range) |
50f3b016 | 1435 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1436 | |
36008365 | 1437 | intel_dp->lane_count = lane_count; |
a8f3ef61 | 1438 | |
94ca719e | 1439 | if (intel_dp->num_sink_rates) { |
bc27b7d3 | 1440 | intel_dp->link_bw = 0; |
a8f3ef61 | 1441 | intel_dp->rate_select = |
94ca719e | 1442 | intel_dp_rate_select(intel_dp, common_rates[clock]); |
bc27b7d3 VS |
1443 | } else { |
1444 | intel_dp->link_bw = | |
94ca719e | 1445 | drm_dp_link_rate_to_bw_code(common_rates[clock]); |
bc27b7d3 | 1446 | intel_dp->rate_select = 0; |
a8f3ef61 SJ |
1447 | } |
1448 | ||
657445fe | 1449 | pipe_config->pipe_bpp = bpp; |
94ca719e | 1450 | pipe_config->port_clock = common_rates[clock]; |
a4fc5ed6 | 1451 | |
36008365 DV |
1452 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1453 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1454 | pipe_config->port_clock, bpp); |
36008365 DV |
1455 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1456 | mode_rate, link_avail); | |
a4fc5ed6 | 1457 | |
03afc4a2 | 1458 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1459 | adjusted_mode->crtc_clock, |
1460 | pipe_config->port_clock, | |
03afc4a2 | 1461 | &pipe_config->dp_m_n); |
9d1a455b | 1462 | |
439d7ac0 | 1463 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1464 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1465 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1466 | intel_link_compute_m_n(bpp, lane_count, |
1467 | intel_connector->panel.downclock_mode->clock, | |
1468 | pipe_config->port_clock, | |
1469 | &pipe_config->dp_m2_n2); | |
1470 | } | |
1471 | ||
5416d871 | 1472 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
94ca719e | 1473 | skl_edp_set_pll_config(pipe_config, common_rates[clock]); |
977bb38d S |
1474 | else if (IS_BROXTON(dev)) |
1475 | /* handled in ddi */; | |
5416d871 | 1476 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1477 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1478 | else | |
1479 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1480 | |
03afc4a2 | 1481 | return true; |
a4fc5ed6 KP |
1482 | } |
1483 | ||
7c62a164 | 1484 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1485 | { |
7c62a164 DV |
1486 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1487 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1488 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1489 | struct drm_i915_private *dev_priv = dev->dev_private; |
1490 | u32 dpa_ctl; | |
1491 | ||
6e3c9717 ACO |
1492 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1493 | crtc->config->port_clock); | |
ea9b6006 DV |
1494 | dpa_ctl = I915_READ(DP_A); |
1495 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1496 | ||
6e3c9717 | 1497 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1498 | /* For a long time we've carried around a ILK-DevA w/a for the |
1499 | * 160MHz clock. If we're really unlucky, it's still required. | |
1500 | */ | |
1501 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1502 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1503 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1504 | } else { |
1505 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1506 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1507 | } |
1ce17038 | 1508 | |
ea9b6006 DV |
1509 | I915_WRITE(DP_A, dpa_ctl); |
1510 | ||
1511 | POSTING_READ(DP_A); | |
1512 | udelay(500); | |
1513 | } | |
1514 | ||
8ac33ed3 | 1515 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1516 | { |
b934223d | 1517 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1518 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1519 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1520 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1521 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
6e3c9717 | 1522 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1523 | |
417e822d | 1524 | /* |
1a2eb460 | 1525 | * There are four kinds of DP registers: |
417e822d KP |
1526 | * |
1527 | * IBX PCH | |
1a2eb460 KP |
1528 | * SNB CPU |
1529 | * IVB CPU | |
417e822d KP |
1530 | * CPT PCH |
1531 | * | |
1532 | * IBX PCH and CPU are the same for almost everything, | |
1533 | * except that the CPU DP PLL is configured in this | |
1534 | * register | |
1535 | * | |
1536 | * CPT PCH is quite different, having many bits moved | |
1537 | * to the TRANS_DP_CTL register instead. That | |
1538 | * configuration happens (oddly) in ironlake_pch_enable | |
1539 | */ | |
9c9e7927 | 1540 | |
417e822d KP |
1541 | /* Preserve the BIOS-computed detected bit. This is |
1542 | * supposed to be read-only. | |
1543 | */ | |
1544 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1545 | |
417e822d | 1546 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1547 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1548 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1549 | |
6e3c9717 | 1550 | if (crtc->config->has_audio) |
ea5b213a | 1551 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1552 | |
417e822d | 1553 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1554 | |
bc7d38a4 | 1555 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1556 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1557 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1558 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1559 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1560 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1561 | ||
6aba5b6c | 1562 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1563 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1564 | ||
7c62a164 | 1565 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1566 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1567 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1568 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1569 | |
1570 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1571 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1572 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1573 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1574 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1575 | ||
6aba5b6c | 1576 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1577 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1578 | ||
44f37d1f CML |
1579 | if (!IS_CHERRYVIEW(dev)) { |
1580 | if (crtc->pipe == 1) | |
1581 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1582 | } else { | |
1583 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1584 | } | |
417e822d KP |
1585 | } else { |
1586 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1587 | } |
a4fc5ed6 KP |
1588 | } |
1589 | ||
ffd6749d PZ |
1590 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1591 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1592 | |
1a5ef5b7 PZ |
1593 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1594 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1595 | |
ffd6749d PZ |
1596 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1597 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1598 | |
4be73780 | 1599 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1600 | u32 mask, |
1601 | u32 value) | |
bd943159 | 1602 | { |
30add22d | 1603 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1604 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1605 | u32 pp_stat_reg, pp_ctrl_reg; |
1606 | ||
e39b999a VS |
1607 | lockdep_assert_held(&dev_priv->pps_mutex); |
1608 | ||
bf13e81b JN |
1609 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1610 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1611 | |
99ea7127 | 1612 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1613 | mask, value, |
1614 | I915_READ(pp_stat_reg), | |
1615 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1616 | |
453c5420 | 1617 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1618 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1619 | I915_READ(pp_stat_reg), |
1620 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1621 | } |
54c136d4 CW |
1622 | |
1623 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1624 | } |
32ce697c | 1625 | |
4be73780 | 1626 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1627 | { |
1628 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1629 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1630 | } |
1631 | ||
4be73780 | 1632 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1633 | { |
1634 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1635 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1636 | } |
1637 | ||
4be73780 | 1638 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1639 | { |
1640 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1641 | |
1642 | /* When we disable the VDD override bit last we have to do the manual | |
1643 | * wait. */ | |
1644 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1645 | intel_dp->panel_power_cycle_delay); | |
1646 | ||
4be73780 | 1647 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1648 | } |
1649 | ||
4be73780 | 1650 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1651 | { |
1652 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1653 | intel_dp->backlight_on_delay); | |
1654 | } | |
1655 | ||
4be73780 | 1656 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1657 | { |
1658 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1659 | intel_dp->backlight_off_delay); | |
1660 | } | |
99ea7127 | 1661 | |
832dd3c1 KP |
1662 | /* Read the current pp_control value, unlocking the register if it |
1663 | * is locked | |
1664 | */ | |
1665 | ||
453c5420 | 1666 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1667 | { |
453c5420 JB |
1668 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1669 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1670 | u32 control; | |
832dd3c1 | 1671 | |
e39b999a VS |
1672 | lockdep_assert_held(&dev_priv->pps_mutex); |
1673 | ||
bf13e81b | 1674 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1675 | control &= ~PANEL_UNLOCK_MASK; |
1676 | control |= PANEL_UNLOCK_REGS; | |
1677 | return control; | |
bd943159 KP |
1678 | } |
1679 | ||
951468f3 VS |
1680 | /* |
1681 | * Must be paired with edp_panel_vdd_off(). | |
1682 | * Must hold pps_mutex around the whole on/off sequence. | |
1683 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1684 | */ | |
1e0560e0 | 1685 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1686 | { |
30add22d | 1687 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1688 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1689 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1690 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1691 | enum intel_display_power_domain power_domain; |
5d613501 | 1692 | u32 pp; |
453c5420 | 1693 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1694 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1695 | |
e39b999a VS |
1696 | lockdep_assert_held(&dev_priv->pps_mutex); |
1697 | ||
97af61f5 | 1698 | if (!is_edp(intel_dp)) |
adddaaf4 | 1699 | return false; |
bd943159 | 1700 | |
2c623c11 | 1701 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1702 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1703 | |
4be73780 | 1704 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1705 | return need_to_disable; |
b0665d57 | 1706 | |
4e6e1a54 ID |
1707 | power_domain = intel_display_port_power_domain(intel_encoder); |
1708 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1709 | |
3936fcf4 VS |
1710 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1711 | port_name(intel_dig_port->port)); | |
bd943159 | 1712 | |
4be73780 DV |
1713 | if (!edp_have_panel_power(intel_dp)) |
1714 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1715 | |
453c5420 | 1716 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1717 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1718 | |
bf13e81b JN |
1719 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1720 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1721 | |
1722 | I915_WRITE(pp_ctrl_reg, pp); | |
1723 | POSTING_READ(pp_ctrl_reg); | |
1724 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1725 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1726 | /* |
1727 | * If the panel wasn't on, delay before accessing aux channel | |
1728 | */ | |
4be73780 | 1729 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1730 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1731 | port_name(intel_dig_port->port)); | |
f01eca2e | 1732 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1733 | } |
adddaaf4 JN |
1734 | |
1735 | return need_to_disable; | |
1736 | } | |
1737 | ||
951468f3 VS |
1738 | /* |
1739 | * Must be paired with intel_edp_panel_vdd_off() or | |
1740 | * intel_edp_panel_off(). | |
1741 | * Nested calls to these functions are not allowed since | |
1742 | * we drop the lock. Caller must use some higher level | |
1743 | * locking to prevent nested calls from other threads. | |
1744 | */ | |
b80d6c78 | 1745 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1746 | { |
c695b6b6 | 1747 | bool vdd; |
adddaaf4 | 1748 | |
c695b6b6 VS |
1749 | if (!is_edp(intel_dp)) |
1750 | return; | |
1751 | ||
773538e8 | 1752 | pps_lock(intel_dp); |
c695b6b6 | 1753 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1754 | pps_unlock(intel_dp); |
c695b6b6 | 1755 | |
e2c719b7 | 1756 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1757 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1758 | } |
1759 | ||
4be73780 | 1760 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1761 | { |
30add22d | 1762 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1763 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1764 | struct intel_digital_port *intel_dig_port = |
1765 | dp_to_dig_port(intel_dp); | |
1766 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1767 | enum intel_display_power_domain power_domain; | |
5d613501 | 1768 | u32 pp; |
453c5420 | 1769 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1770 | |
e39b999a | 1771 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1772 | |
15e899a0 | 1773 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1774 | |
15e899a0 | 1775 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1776 | return; |
b0665d57 | 1777 | |
3936fcf4 VS |
1778 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1779 | port_name(intel_dig_port->port)); | |
bd943159 | 1780 | |
be2c9196 VS |
1781 | pp = ironlake_get_pp_control(intel_dp); |
1782 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1783 | |
be2c9196 VS |
1784 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1785 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1786 | |
be2c9196 VS |
1787 | I915_WRITE(pp_ctrl_reg, pp); |
1788 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1789 | |
be2c9196 VS |
1790 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1791 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1792 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1793 | |
be2c9196 VS |
1794 | if ((pp & POWER_TARGET_ON) == 0) |
1795 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1796 | |
be2c9196 VS |
1797 | power_domain = intel_display_port_power_domain(intel_encoder); |
1798 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1799 | } |
5d613501 | 1800 | |
4be73780 | 1801 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1802 | { |
1803 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1804 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1805 | |
773538e8 | 1806 | pps_lock(intel_dp); |
15e899a0 VS |
1807 | if (!intel_dp->want_panel_vdd) |
1808 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1809 | pps_unlock(intel_dp); |
bd943159 KP |
1810 | } |
1811 | ||
aba86890 ID |
1812 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1813 | { | |
1814 | unsigned long delay; | |
1815 | ||
1816 | /* | |
1817 | * Queue the timer to fire a long time from now (relative to the power | |
1818 | * down delay) to keep the panel power up across a sequence of | |
1819 | * operations. | |
1820 | */ | |
1821 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1822 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1823 | } | |
1824 | ||
951468f3 VS |
1825 | /* |
1826 | * Must be paired with edp_panel_vdd_on(). | |
1827 | * Must hold pps_mutex around the whole on/off sequence. | |
1828 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1829 | */ | |
4be73780 | 1830 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1831 | { |
e39b999a VS |
1832 | struct drm_i915_private *dev_priv = |
1833 | intel_dp_to_dev(intel_dp)->dev_private; | |
1834 | ||
1835 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1836 | ||
97af61f5 KP |
1837 | if (!is_edp(intel_dp)) |
1838 | return; | |
5d613501 | 1839 | |
e2c719b7 | 1840 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1841 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1842 | |
bd943159 KP |
1843 | intel_dp->want_panel_vdd = false; |
1844 | ||
aba86890 | 1845 | if (sync) |
4be73780 | 1846 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1847 | else |
1848 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1849 | } |
1850 | ||
9f0fb5be | 1851 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1852 | { |
30add22d | 1853 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1854 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1855 | u32 pp; |
453c5420 | 1856 | u32 pp_ctrl_reg; |
9934c132 | 1857 | |
9f0fb5be VS |
1858 | lockdep_assert_held(&dev_priv->pps_mutex); |
1859 | ||
97af61f5 | 1860 | if (!is_edp(intel_dp)) |
bd943159 | 1861 | return; |
99ea7127 | 1862 | |
3936fcf4 VS |
1863 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1864 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1865 | |
e7a89ace VS |
1866 | if (WARN(edp_have_panel_power(intel_dp), |
1867 | "eDP port %c panel power already on\n", | |
1868 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1869 | return; |
9934c132 | 1870 | |
4be73780 | 1871 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1872 | |
bf13e81b | 1873 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1874 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1875 | if (IS_GEN5(dev)) { |
1876 | /* ILK workaround: disable reset around power sequence */ | |
1877 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1878 | I915_WRITE(pp_ctrl_reg, pp); |
1879 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1880 | } |
37c6c9b0 | 1881 | |
1c0ae80a | 1882 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1883 | if (!IS_GEN5(dev)) |
1884 | pp |= PANEL_POWER_RESET; | |
1885 | ||
453c5420 JB |
1886 | I915_WRITE(pp_ctrl_reg, pp); |
1887 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1888 | |
4be73780 | 1889 | wait_panel_on(intel_dp); |
dce56b3c | 1890 | intel_dp->last_power_on = jiffies; |
9934c132 | 1891 | |
05ce1a49 KP |
1892 | if (IS_GEN5(dev)) { |
1893 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1894 | I915_WRITE(pp_ctrl_reg, pp); |
1895 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1896 | } |
9f0fb5be | 1897 | } |
e39b999a | 1898 | |
9f0fb5be VS |
1899 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1900 | { | |
1901 | if (!is_edp(intel_dp)) | |
1902 | return; | |
1903 | ||
1904 | pps_lock(intel_dp); | |
1905 | edp_panel_on(intel_dp); | |
773538e8 | 1906 | pps_unlock(intel_dp); |
9934c132 JB |
1907 | } |
1908 | ||
9f0fb5be VS |
1909 | |
1910 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1911 | { |
4e6e1a54 ID |
1912 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1913 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1914 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1915 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1916 | enum intel_display_power_domain power_domain; |
99ea7127 | 1917 | u32 pp; |
453c5420 | 1918 | u32 pp_ctrl_reg; |
9934c132 | 1919 | |
9f0fb5be VS |
1920 | lockdep_assert_held(&dev_priv->pps_mutex); |
1921 | ||
97af61f5 KP |
1922 | if (!is_edp(intel_dp)) |
1923 | return; | |
37c6c9b0 | 1924 | |
3936fcf4 VS |
1925 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
1926 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 1927 | |
3936fcf4 VS |
1928 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
1929 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 1930 | |
453c5420 | 1931 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1932 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1933 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1934 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1935 | EDP_BLC_ENABLE); | |
453c5420 | 1936 | |
bf13e81b | 1937 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1938 | |
849e39f5 PZ |
1939 | intel_dp->want_panel_vdd = false; |
1940 | ||
453c5420 JB |
1941 | I915_WRITE(pp_ctrl_reg, pp); |
1942 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1943 | |
dce56b3c | 1944 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1945 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1946 | |
1947 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1948 | power_domain = intel_display_port_power_domain(intel_encoder); |
1949 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 1950 | } |
e39b999a | 1951 | |
9f0fb5be VS |
1952 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
1953 | { | |
1954 | if (!is_edp(intel_dp)) | |
1955 | return; | |
e39b999a | 1956 | |
9f0fb5be VS |
1957 | pps_lock(intel_dp); |
1958 | edp_panel_off(intel_dp); | |
773538e8 | 1959 | pps_unlock(intel_dp); |
9934c132 JB |
1960 | } |
1961 | ||
1250d107 JN |
1962 | /* Enable backlight in the panel power control. */ |
1963 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1964 | { |
da63a9f2 PZ |
1965 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1966 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1967 | struct drm_i915_private *dev_priv = dev->dev_private; |
1968 | u32 pp; | |
453c5420 | 1969 | u32 pp_ctrl_reg; |
32f9d658 | 1970 | |
01cb9ea6 JB |
1971 | /* |
1972 | * If we enable the backlight right away following a panel power | |
1973 | * on, we may see slight flicker as the panel syncs with the eDP | |
1974 | * link. So delay a bit to make sure the image is solid before | |
1975 | * allowing it to appear. | |
1976 | */ | |
4be73780 | 1977 | wait_backlight_on(intel_dp); |
e39b999a | 1978 | |
773538e8 | 1979 | pps_lock(intel_dp); |
e39b999a | 1980 | |
453c5420 | 1981 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1982 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1983 | |
bf13e81b | 1984 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1985 | |
1986 | I915_WRITE(pp_ctrl_reg, pp); | |
1987 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1988 | |
773538e8 | 1989 | pps_unlock(intel_dp); |
32f9d658 ZW |
1990 | } |
1991 | ||
1250d107 JN |
1992 | /* Enable backlight PWM and backlight PP control. */ |
1993 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1994 | { | |
1995 | if (!is_edp(intel_dp)) | |
1996 | return; | |
1997 | ||
1998 | DRM_DEBUG_KMS("\n"); | |
1999 | ||
2000 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
2001 | _intel_edp_backlight_on(intel_dp); | |
2002 | } | |
2003 | ||
2004 | /* Disable backlight in the panel power control. */ | |
2005 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 2006 | { |
30add22d | 2007 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
2008 | struct drm_i915_private *dev_priv = dev->dev_private; |
2009 | u32 pp; | |
453c5420 | 2010 | u32 pp_ctrl_reg; |
32f9d658 | 2011 | |
f01eca2e KP |
2012 | if (!is_edp(intel_dp)) |
2013 | return; | |
2014 | ||
773538e8 | 2015 | pps_lock(intel_dp); |
e39b999a | 2016 | |
453c5420 | 2017 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2018 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 2019 | |
bf13e81b | 2020 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2021 | |
2022 | I915_WRITE(pp_ctrl_reg, pp); | |
2023 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 2024 | |
773538e8 | 2025 | pps_unlock(intel_dp); |
e39b999a VS |
2026 | |
2027 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 2028 | edp_wait_backlight_off(intel_dp); |
1250d107 | 2029 | } |
f7d2323c | 2030 | |
1250d107 JN |
2031 | /* Disable backlight PP control and backlight PWM. */ |
2032 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
2033 | { | |
2034 | if (!is_edp(intel_dp)) | |
2035 | return; | |
2036 | ||
2037 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 2038 | |
1250d107 | 2039 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 2040 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 2041 | } |
a4fc5ed6 | 2042 | |
73580fb7 JN |
2043 | /* |
2044 | * Hook for controlling the panel power control backlight through the bl_power | |
2045 | * sysfs attribute. Take care to handle multiple calls. | |
2046 | */ | |
2047 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
2048 | bool enable) | |
2049 | { | |
2050 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
2051 | bool is_enabled; |
2052 | ||
773538e8 | 2053 | pps_lock(intel_dp); |
e39b999a | 2054 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 2055 | pps_unlock(intel_dp); |
73580fb7 JN |
2056 | |
2057 | if (is_enabled == enable) | |
2058 | return; | |
2059 | ||
23ba9373 JN |
2060 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2061 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2062 | |
2063 | if (enable) | |
2064 | _intel_edp_backlight_on(intel_dp); | |
2065 | else | |
2066 | _intel_edp_backlight_off(intel_dp); | |
2067 | } | |
2068 | ||
2bd2ad64 | 2069 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2070 | { |
da63a9f2 PZ |
2071 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2072 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2073 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2074 | struct drm_i915_private *dev_priv = dev->dev_private; |
2075 | u32 dpa_ctl; | |
2076 | ||
2bd2ad64 DV |
2077 | assert_pipe_disabled(dev_priv, |
2078 | to_intel_crtc(crtc)->pipe); | |
2079 | ||
d240f20f JB |
2080 | DRM_DEBUG_KMS("\n"); |
2081 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2082 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2083 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2084 | ||
2085 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2086 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2087 | * enable bits here to ensure that we don't enable too much. */ | |
2088 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2089 | intel_dp->DP |= DP_PLL_ENABLE; | |
2090 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2091 | POSTING_READ(DP_A); |
2092 | udelay(200); | |
d240f20f JB |
2093 | } |
2094 | ||
2bd2ad64 | 2095 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2096 | { |
da63a9f2 PZ |
2097 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2098 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2099 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2100 | struct drm_i915_private *dev_priv = dev->dev_private; |
2101 | u32 dpa_ctl; | |
2102 | ||
2bd2ad64 DV |
2103 | assert_pipe_disabled(dev_priv, |
2104 | to_intel_crtc(crtc)->pipe); | |
2105 | ||
d240f20f | 2106 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2107 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2108 | "dp pll off, should be on\n"); | |
2109 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2110 | ||
2111 | /* We can't rely on the value tracked for the DP register in | |
2112 | * intel_dp->DP because link_down must not change that (otherwise link | |
2113 | * re-training will fail. */ | |
298b0b39 | 2114 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2115 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2116 | POSTING_READ(DP_A); |
d240f20f JB |
2117 | udelay(200); |
2118 | } | |
2119 | ||
c7ad3810 | 2120 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2121 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2122 | { |
2123 | int ret, i; | |
2124 | ||
2125 | /* Should have a valid DPCD by this point */ | |
2126 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2127 | return; | |
2128 | ||
2129 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2130 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2131 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2132 | } else { |
2133 | /* | |
2134 | * When turning on, we need to retry for 1ms to give the sink | |
2135 | * time to wake up. | |
2136 | */ | |
2137 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2138 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2139 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2140 | if (ret == 1) |
2141 | break; | |
2142 | msleep(1); | |
2143 | } | |
2144 | } | |
f9cac721 JN |
2145 | |
2146 | if (ret != 1) | |
2147 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2148 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2149 | } |
2150 | ||
19d8fe15 DV |
2151 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2152 | enum pipe *pipe) | |
d240f20f | 2153 | { |
19d8fe15 | 2154 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2155 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2156 | struct drm_device *dev = encoder->base.dev; |
2157 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2158 | enum intel_display_power_domain power_domain; |
2159 | u32 tmp; | |
2160 | ||
2161 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2162 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2163 | return false; |
2164 | ||
2165 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2166 | |
2167 | if (!(tmp & DP_PORT_EN)) | |
2168 | return false; | |
2169 | ||
bc7d38a4 | 2170 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 2171 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
2172 | } else if (IS_CHERRYVIEW(dev)) { |
2173 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 2174 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
2175 | *pipe = PORT_TO_PIPE(tmp); |
2176 | } else { | |
2177 | u32 trans_sel; | |
2178 | u32 trans_dp; | |
2179 | int i; | |
2180 | ||
2181 | switch (intel_dp->output_reg) { | |
2182 | case PCH_DP_B: | |
2183 | trans_sel = TRANS_DP_PORT_SEL_B; | |
2184 | break; | |
2185 | case PCH_DP_C: | |
2186 | trans_sel = TRANS_DP_PORT_SEL_C; | |
2187 | break; | |
2188 | case PCH_DP_D: | |
2189 | trans_sel = TRANS_DP_PORT_SEL_D; | |
2190 | break; | |
2191 | default: | |
2192 | return true; | |
2193 | } | |
2194 | ||
055e393f | 2195 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
2196 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
2197 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
2198 | *pipe = i; | |
2199 | return true; | |
2200 | } | |
2201 | } | |
19d8fe15 | 2202 | |
4a0833ec DV |
2203 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2204 | intel_dp->output_reg); | |
2205 | } | |
d240f20f | 2206 | |
19d8fe15 DV |
2207 | return true; |
2208 | } | |
d240f20f | 2209 | |
045ac3b5 | 2210 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2211 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2212 | { |
2213 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2214 | u32 tmp, flags = 0; |
63000ef6 XZ |
2215 | struct drm_device *dev = encoder->base.dev; |
2216 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2217 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2218 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2219 | int dotclock; |
045ac3b5 | 2220 | |
9ed109a7 DV |
2221 | tmp = I915_READ(intel_dp->output_reg); |
2222 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
2223 | pipe_config->has_audio = true; | |
2224 | ||
63000ef6 | 2225 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
2226 | if (tmp & DP_SYNC_HS_HIGH) |
2227 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2228 | else | |
2229 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2230 | |
63000ef6 XZ |
2231 | if (tmp & DP_SYNC_VS_HIGH) |
2232 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2233 | else | |
2234 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2235 | } else { | |
2236 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
2237 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
2238 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2239 | else | |
2240 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2241 | |
63000ef6 XZ |
2242 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
2243 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2244 | else | |
2245 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2246 | } | |
045ac3b5 | 2247 | |
2d112de7 | 2248 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2249 | |
8c875fca VS |
2250 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2251 | tmp & DP_COLOR_RANGE_16_235) | |
2252 | pipe_config->limited_color_range = true; | |
2253 | ||
eb14cb74 VS |
2254 | pipe_config->has_dp_encoder = true; |
2255 | ||
2256 | intel_dp_get_m_n(crtc, pipe_config); | |
2257 | ||
18442d08 | 2258 | if (port == PORT_A) { |
f1f644dc JB |
2259 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2260 | pipe_config->port_clock = 162000; | |
2261 | else | |
2262 | pipe_config->port_clock = 270000; | |
2263 | } | |
18442d08 VS |
2264 | |
2265 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2266 | &pipe_config->dp_m_n); | |
2267 | ||
2268 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2269 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2270 | ||
2d112de7 | 2271 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2272 | |
c6cd2ee2 JN |
2273 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2274 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2275 | /* | |
2276 | * This is a big fat ugly hack. | |
2277 | * | |
2278 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2279 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2280 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2281 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2282 | * max, not what it tells us to use. | |
2283 | * | |
2284 | * Note: This will still be broken if the eDP panel is not lit | |
2285 | * up by the BIOS, and thus we can't get the mode at module | |
2286 | * load. | |
2287 | */ | |
2288 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2289 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2290 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2291 | } | |
045ac3b5 JB |
2292 | } |
2293 | ||
e8cb4558 | 2294 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2295 | { |
e8cb4558 | 2296 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2297 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2298 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2299 | ||
6e3c9717 | 2300 | if (crtc->config->has_audio) |
495a5bb8 | 2301 | intel_audio_codec_disable(encoder); |
6cb49835 | 2302 | |
b32c6f48 RV |
2303 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2304 | intel_psr_disable(intel_dp); | |
2305 | ||
6cb49835 DV |
2306 | /* Make sure the panel is off before trying to change the mode. But also |
2307 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2308 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2309 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2310 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2311 | intel_edp_panel_off(intel_dp); |
3739850b | 2312 | |
08aff3fe VS |
2313 | /* disable the port before the pipe on g4x */ |
2314 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2315 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2316 | } |
2317 | ||
08aff3fe | 2318 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2319 | { |
2bd2ad64 | 2320 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2321 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2322 | |
49277c31 | 2323 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2324 | if (port == PORT_A) |
2325 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2326 | } |
2327 | ||
2328 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2329 | { | |
2330 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2331 | ||
2332 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2333 | } |
2334 | ||
580d3811 VS |
2335 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2336 | { | |
2337 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2338 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2339 | struct drm_device *dev = encoder->base.dev; | |
2340 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2341 | struct intel_crtc *intel_crtc = | |
2342 | to_intel_crtc(encoder->base.crtc); | |
2343 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2344 | enum pipe pipe = intel_crtc->pipe; | |
2345 | u32 val; | |
2346 | ||
2347 | intel_dp_link_down(intel_dp); | |
2348 | ||
2349 | mutex_lock(&dev_priv->dpio_lock); | |
2350 | ||
2351 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2352 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2353 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2354 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2355 | |
97fd4d5c VS |
2356 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2357 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2358 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2359 | ||
2360 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2361 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2362 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2363 | ||
2364 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2365 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2366 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2367 | |
2368 | mutex_unlock(&dev_priv->dpio_lock); | |
2369 | } | |
2370 | ||
7b13b58a VS |
2371 | static void |
2372 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2373 | uint32_t *DP, | |
2374 | uint8_t dp_train_pat) | |
2375 | { | |
2376 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2377 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2378 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2379 | enum port port = intel_dig_port->port; | |
2380 | ||
2381 | if (HAS_DDI(dev)) { | |
2382 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2383 | ||
2384 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2385 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2386 | else | |
2387 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2388 | ||
2389 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2390 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2391 | case DP_TRAINING_PATTERN_DISABLE: | |
2392 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2393 | ||
2394 | break; | |
2395 | case DP_TRAINING_PATTERN_1: | |
2396 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2397 | break; | |
2398 | case DP_TRAINING_PATTERN_2: | |
2399 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2400 | break; | |
2401 | case DP_TRAINING_PATTERN_3: | |
2402 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2403 | break; | |
2404 | } | |
2405 | I915_WRITE(DP_TP_CTL(port), temp); | |
2406 | ||
2407 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2408 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2409 | ||
2410 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2411 | case DP_TRAINING_PATTERN_DISABLE: | |
2412 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2413 | break; | |
2414 | case DP_TRAINING_PATTERN_1: | |
2415 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2416 | break; | |
2417 | case DP_TRAINING_PATTERN_2: | |
2418 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2419 | break; | |
2420 | case DP_TRAINING_PATTERN_3: | |
2421 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2422 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2423 | break; | |
2424 | } | |
2425 | ||
2426 | } else { | |
2427 | if (IS_CHERRYVIEW(dev)) | |
2428 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2429 | else | |
2430 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2431 | ||
2432 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2433 | case DP_TRAINING_PATTERN_DISABLE: | |
2434 | *DP |= DP_LINK_TRAIN_OFF; | |
2435 | break; | |
2436 | case DP_TRAINING_PATTERN_1: | |
2437 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2438 | break; | |
2439 | case DP_TRAINING_PATTERN_2: | |
2440 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2441 | break; | |
2442 | case DP_TRAINING_PATTERN_3: | |
2443 | if (IS_CHERRYVIEW(dev)) { | |
2444 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2445 | } else { | |
2446 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2447 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2448 | } | |
2449 | break; | |
2450 | } | |
2451 | } | |
2452 | } | |
2453 | ||
2454 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2455 | { | |
2456 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2457 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2458 | ||
7b13b58a VS |
2459 | /* enable with pattern 1 (as per spec) */ |
2460 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2461 | DP_TRAINING_PATTERN_1); | |
2462 | ||
2463 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2464 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2465 | |
2466 | /* | |
2467 | * Magic for VLV/CHV. We _must_ first set up the register | |
2468 | * without actually enabling the port, and then do another | |
2469 | * write to enable the port. Otherwise link training will | |
2470 | * fail when the power sequencer is freshly used for this port. | |
2471 | */ | |
2472 | intel_dp->DP |= DP_PORT_EN; | |
2473 | ||
2474 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2475 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2476 | } |
2477 | ||
e8cb4558 | 2478 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2479 | { |
e8cb4558 DV |
2480 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2481 | struct drm_device *dev = encoder->base.dev; | |
2482 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2483 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2484 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
5d613501 | 2485 | |
0c33d8d7 DV |
2486 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2487 | return; | |
5d613501 | 2488 | |
093e3f13 VS |
2489 | pps_lock(intel_dp); |
2490 | ||
2491 | if (IS_VALLEYVIEW(dev)) | |
2492 | vlv_init_panel_power_sequencer(intel_dp); | |
2493 | ||
7b13b58a | 2494 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2495 | |
2496 | edp_panel_vdd_on(intel_dp); | |
2497 | edp_panel_on(intel_dp); | |
2498 | edp_panel_vdd_off(intel_dp, true); | |
2499 | ||
2500 | pps_unlock(intel_dp); | |
2501 | ||
61234fa5 VS |
2502 | if (IS_VALLEYVIEW(dev)) |
2503 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp)); | |
2504 | ||
f01eca2e | 2505 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2506 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2507 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2508 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2509 | |
6e3c9717 | 2510 | if (crtc->config->has_audio) { |
c1dec79a JN |
2511 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2512 | pipe_name(crtc->pipe)); | |
2513 | intel_audio_codec_enable(encoder); | |
2514 | } | |
ab1f90f9 | 2515 | } |
89b667f8 | 2516 | |
ecff4f3b JN |
2517 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2518 | { | |
828f5c6e JN |
2519 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2520 | ||
ecff4f3b | 2521 | intel_enable_dp(encoder); |
4be73780 | 2522 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2523 | } |
89b667f8 | 2524 | |
ab1f90f9 JN |
2525 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2526 | { | |
828f5c6e JN |
2527 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2528 | ||
4be73780 | 2529 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2530 | intel_psr_enable(intel_dp); |
d240f20f JB |
2531 | } |
2532 | ||
ecff4f3b | 2533 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2534 | { |
2535 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2536 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2537 | ||
8ac33ed3 DV |
2538 | intel_dp_prepare(encoder); |
2539 | ||
d41f1efb DV |
2540 | /* Only ilk+ has port A */ |
2541 | if (dport->port == PORT_A) { | |
2542 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2543 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2544 | } |
ab1f90f9 JN |
2545 | } |
2546 | ||
83b84597 VS |
2547 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2548 | { | |
2549 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2550 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2551 | enum pipe pipe = intel_dp->pps_pipe; | |
2552 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2553 | ||
2554 | edp_panel_vdd_off_sync(intel_dp); | |
2555 | ||
2556 | /* | |
2557 | * VLV seems to get confused when multiple power seqeuencers | |
2558 | * have the same port selected (even if only one has power/vdd | |
2559 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2560 | * CHV on the other hand doesn't seem to mind having the same port | |
2561 | * selected in multiple power seqeuencers, but let's clear the | |
2562 | * port select always when logically disconnecting a power sequencer | |
2563 | * from a port. | |
2564 | */ | |
2565 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2566 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2567 | I915_WRITE(pp_on_reg, 0); | |
2568 | POSTING_READ(pp_on_reg); | |
2569 | ||
2570 | intel_dp->pps_pipe = INVALID_PIPE; | |
2571 | } | |
2572 | ||
a4a5d2f8 VS |
2573 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2574 | enum pipe pipe) | |
2575 | { | |
2576 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2577 | struct intel_encoder *encoder; | |
2578 | ||
2579 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2580 | ||
ac3c12e4 VS |
2581 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2582 | return; | |
2583 | ||
a4a5d2f8 VS |
2584 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2585 | base.head) { | |
2586 | struct intel_dp *intel_dp; | |
773538e8 | 2587 | enum port port; |
a4a5d2f8 VS |
2588 | |
2589 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2590 | continue; | |
2591 | ||
2592 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2593 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2594 | |
2595 | if (intel_dp->pps_pipe != pipe) | |
2596 | continue; | |
2597 | ||
2598 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2599 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2600 | |
034e43c6 VS |
2601 | WARN(encoder->connectors_active, |
2602 | "stealing pipe %c power sequencer from active eDP port %c\n", | |
2603 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2604 | |
a4a5d2f8 | 2605 | /* make sure vdd is off before we steal it */ |
83b84597 | 2606 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2607 | } |
2608 | } | |
2609 | ||
2610 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2611 | { | |
2612 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2613 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2614 | struct drm_device *dev = encoder->base.dev; | |
2615 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2616 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2617 | |
2618 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2619 | ||
093e3f13 VS |
2620 | if (!is_edp(intel_dp)) |
2621 | return; | |
2622 | ||
a4a5d2f8 VS |
2623 | if (intel_dp->pps_pipe == crtc->pipe) |
2624 | return; | |
2625 | ||
2626 | /* | |
2627 | * If another power sequencer was being used on this | |
2628 | * port previously make sure to turn off vdd there while | |
2629 | * we still have control of it. | |
2630 | */ | |
2631 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2632 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2633 | |
2634 | /* | |
2635 | * We may be stealing the power | |
2636 | * sequencer from another port. | |
2637 | */ | |
2638 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2639 | ||
2640 | /* now it's all ours */ | |
2641 | intel_dp->pps_pipe = crtc->pipe; | |
2642 | ||
2643 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2644 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2645 | ||
2646 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2647 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2648 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2649 | } |
2650 | ||
ab1f90f9 | 2651 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2652 | { |
2bd2ad64 | 2653 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2654 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2655 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2656 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2657 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2658 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2659 | int pipe = intel_crtc->pipe; |
2660 | u32 val; | |
a4fc5ed6 | 2661 | |
ab1f90f9 | 2662 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2663 | |
ab3c759a | 2664 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2665 | val = 0; |
2666 | if (pipe) | |
2667 | val |= (1<<21); | |
2668 | else | |
2669 | val &= ~(1<<21); | |
2670 | val |= 0x001000c4; | |
ab3c759a CML |
2671 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2672 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2673 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2674 | |
ab1f90f9 JN |
2675 | mutex_unlock(&dev_priv->dpio_lock); |
2676 | ||
2677 | intel_enable_dp(encoder); | |
89b667f8 JB |
2678 | } |
2679 | ||
ecff4f3b | 2680 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2681 | { |
2682 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2683 | struct drm_device *dev = encoder->base.dev; | |
2684 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2685 | struct intel_crtc *intel_crtc = |
2686 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2687 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2688 | int pipe = intel_crtc->pipe; |
89b667f8 | 2689 | |
8ac33ed3 DV |
2690 | intel_dp_prepare(encoder); |
2691 | ||
89b667f8 | 2692 | /* Program Tx lane resets to default */ |
0980a60f | 2693 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2694 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2695 | DPIO_PCS_TX_LANE2_RESET | |
2696 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2697 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2698 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2699 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2700 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2701 | DPIO_PCS_CLK_SOFT_RESET); | |
2702 | ||
2703 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2704 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2705 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2706 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2707 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2708 | } |
2709 | ||
e4a1d846 CML |
2710 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2711 | { | |
2712 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2713 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2714 | struct drm_device *dev = encoder->base.dev; | |
2715 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2716 | struct intel_crtc *intel_crtc = |
2717 | to_intel_crtc(encoder->base.crtc); | |
2718 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2719 | int pipe = intel_crtc->pipe; | |
2720 | int data, i; | |
949c1d43 | 2721 | u32 val; |
e4a1d846 | 2722 | |
e4a1d846 | 2723 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 | 2724 | |
570e2a74 VS |
2725 | /* allow hardware to manage TX FIFO reset source */ |
2726 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2727 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2728 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2729 | ||
2730 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2731 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2732 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2733 | ||
949c1d43 | 2734 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2735 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2736 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2737 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2738 | ||
2739 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2740 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2741 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2742 | ||
2743 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2744 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2745 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2746 | |
97fd4d5c | 2747 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2748 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2749 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2750 | |
2751 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2752 | for (i = 0; i < 4; i++) { |
2753 | /* Set the latency optimal bit */ | |
2754 | data = (i == 1) ? 0x0 : 0x6; | |
2755 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2756 | data << DPIO_FRC_LATENCY_SHFIT); | |
2757 | ||
2758 | /* Set the upar bit */ | |
2759 | data = (i == 1) ? 0x0 : 0x1; | |
2760 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2761 | data << DPIO_UPAR_SHIFT); | |
2762 | } | |
2763 | ||
2764 | /* Data lane stagger programming */ | |
2765 | /* FIXME: Fix up value only after power analysis */ | |
2766 | ||
2767 | mutex_unlock(&dev_priv->dpio_lock); | |
2768 | ||
e4a1d846 | 2769 | intel_enable_dp(encoder); |
e4a1d846 CML |
2770 | } |
2771 | ||
9197c88b VS |
2772 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2773 | { | |
2774 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2775 | struct drm_device *dev = encoder->base.dev; | |
2776 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2777 | struct intel_crtc *intel_crtc = | |
2778 | to_intel_crtc(encoder->base.crtc); | |
2779 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2780 | enum pipe pipe = intel_crtc->pipe; | |
2781 | u32 val; | |
2782 | ||
625695f8 VS |
2783 | intel_dp_prepare(encoder); |
2784 | ||
9197c88b VS |
2785 | mutex_lock(&dev_priv->dpio_lock); |
2786 | ||
b9e5ac3c VS |
2787 | /* program left/right clock distribution */ |
2788 | if (pipe != PIPE_B) { | |
2789 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2790 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2791 | if (ch == DPIO_CH0) | |
2792 | val |= CHV_BUFLEFTENA1_FORCE; | |
2793 | if (ch == DPIO_CH1) | |
2794 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2795 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2796 | } else { | |
2797 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2798 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2799 | if (ch == DPIO_CH0) | |
2800 | val |= CHV_BUFLEFTENA2_FORCE; | |
2801 | if (ch == DPIO_CH1) | |
2802 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2803 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2804 | } | |
2805 | ||
9197c88b VS |
2806 | /* program clock channel usage */ |
2807 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2808 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2809 | if (pipe != PIPE_B) | |
2810 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2811 | else | |
2812 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2813 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2814 | ||
2815 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2816 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2817 | if (pipe != PIPE_B) | |
2818 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2819 | else | |
2820 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2821 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2822 | ||
2823 | /* | |
2824 | * This a a bit weird since generally CL | |
2825 | * matches the pipe, but here we need to | |
2826 | * pick the CL based on the port. | |
2827 | */ | |
2828 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2829 | if (pipe != PIPE_B) | |
2830 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2831 | else | |
2832 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2833 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2834 | ||
2835 | mutex_unlock(&dev_priv->dpio_lock); | |
2836 | } | |
2837 | ||
a4fc5ed6 | 2838 | /* |
df0c237d JB |
2839 | * Native read with retry for link status and receiver capability reads for |
2840 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2841 | * |
2842 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2843 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2844 | */ |
9d1a1031 JN |
2845 | static ssize_t |
2846 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2847 | void *buffer, size_t size) | |
a4fc5ed6 | 2848 | { |
9d1a1031 JN |
2849 | ssize_t ret; |
2850 | int i; | |
61da5fab | 2851 | |
f6a19066 VS |
2852 | /* |
2853 | * Sometime we just get the same incorrect byte repeated | |
2854 | * over the entire buffer. Doing just one throw away read | |
2855 | * initially seems to "solve" it. | |
2856 | */ | |
2857 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
2858 | ||
61da5fab | 2859 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2860 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2861 | if (ret == size) | |
2862 | return ret; | |
61da5fab JB |
2863 | msleep(1); |
2864 | } | |
a4fc5ed6 | 2865 | |
9d1a1031 | 2866 | return ret; |
a4fc5ed6 KP |
2867 | } |
2868 | ||
2869 | /* | |
2870 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2871 | * link status information | |
2872 | */ | |
2873 | static bool | |
93f62dad | 2874 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2875 | { |
9d1a1031 JN |
2876 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2877 | DP_LANE0_1_STATUS, | |
2878 | link_status, | |
2879 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2880 | } |
2881 | ||
1100244e | 2882 | /* These are source-specific values. */ |
a4fc5ed6 | 2883 | static uint8_t |
1a2eb460 | 2884 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2885 | { |
30add22d | 2886 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 2887 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 2888 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2889 | |
9314726b VK |
2890 | if (IS_BROXTON(dev)) |
2891 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
2892 | else if (INTEL_INFO(dev)->gen >= 9) { | |
7ad14a29 SJ |
2893 | if (dev_priv->vbt.edp_low_vswing && port == PORT_A) |
2894 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
5a9d1f1a | 2895 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 2896 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 2897 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2898 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2899 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2900 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2901 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2902 | else |
bd60018a | 2903 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2904 | } |
2905 | ||
2906 | static uint8_t | |
2907 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2908 | { | |
30add22d | 2909 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2910 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2911 | |
5a9d1f1a DL |
2912 | if (INTEL_INFO(dev)->gen >= 9) { |
2913 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2914 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
2915 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2916 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2917 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2918 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2919 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
2920 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
2921 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
2922 | default: |
2923 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
2924 | } | |
2925 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 2926 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2927 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2928 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2929 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2930 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2931 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2932 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2933 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2934 | default: |
bd60018a | 2935 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2936 | } |
e2fa6fba P |
2937 | } else if (IS_VALLEYVIEW(dev)) { |
2938 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2939 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2940 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2941 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2942 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2943 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2944 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2945 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2946 | default: |
bd60018a | 2947 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2948 | } |
bc7d38a4 | 2949 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2950 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2951 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2952 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2953 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2954 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2955 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2956 | default: |
bd60018a | 2957 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2958 | } |
2959 | } else { | |
2960 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2961 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2962 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2963 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2964 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2965 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2966 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2967 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2968 | default: |
bd60018a | 2969 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2970 | } |
a4fc5ed6 KP |
2971 | } |
2972 | } | |
2973 | ||
5829975c | 2974 | static uint32_t vlv_signal_levels(struct intel_dp *intel_dp) |
e2fa6fba P |
2975 | { |
2976 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2977 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2978 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2979 | struct intel_crtc *intel_crtc = |
2980 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2981 | unsigned long demph_reg_value, preemph_reg_value, |
2982 | uniqtranscale_reg_value; | |
2983 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2984 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2985 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2986 | |
2987 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2988 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2989 | preemph_reg_value = 0x0004000; |
2990 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2991 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2992 | demph_reg_value = 0x2B405555; |
2993 | uniqtranscale_reg_value = 0x552AB83A; | |
2994 | break; | |
bd60018a | 2995 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2996 | demph_reg_value = 0x2B404040; |
2997 | uniqtranscale_reg_value = 0x5548B83A; | |
2998 | break; | |
bd60018a | 2999 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3000 | demph_reg_value = 0x2B245555; |
3001 | uniqtranscale_reg_value = 0x5560B83A; | |
3002 | break; | |
bd60018a | 3003 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
3004 | demph_reg_value = 0x2B405555; |
3005 | uniqtranscale_reg_value = 0x5598DA3A; | |
3006 | break; | |
3007 | default: | |
3008 | return 0; | |
3009 | } | |
3010 | break; | |
bd60018a | 3011 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
3012 | preemph_reg_value = 0x0002000; |
3013 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3014 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3015 | demph_reg_value = 0x2B404040; |
3016 | uniqtranscale_reg_value = 0x5552B83A; | |
3017 | break; | |
bd60018a | 3018 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3019 | demph_reg_value = 0x2B404848; |
3020 | uniqtranscale_reg_value = 0x5580B83A; | |
3021 | break; | |
bd60018a | 3022 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3023 | demph_reg_value = 0x2B404040; |
3024 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3025 | break; | |
3026 | default: | |
3027 | return 0; | |
3028 | } | |
3029 | break; | |
bd60018a | 3030 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
3031 | preemph_reg_value = 0x0000000; |
3032 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3033 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3034 | demph_reg_value = 0x2B305555; |
3035 | uniqtranscale_reg_value = 0x5570B83A; | |
3036 | break; | |
bd60018a | 3037 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3038 | demph_reg_value = 0x2B2B4040; |
3039 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3040 | break; | |
3041 | default: | |
3042 | return 0; | |
3043 | } | |
3044 | break; | |
bd60018a | 3045 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
3046 | preemph_reg_value = 0x0006000; |
3047 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3048 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3049 | demph_reg_value = 0x1B405555; |
3050 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3051 | break; | |
3052 | default: | |
3053 | return 0; | |
3054 | } | |
3055 | break; | |
3056 | default: | |
3057 | return 0; | |
3058 | } | |
3059 | ||
0980a60f | 3060 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
3061 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3062 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
3063 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3064 | uniqtranscale_reg_value); |
ab3c759a CML |
3065 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3066 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3067 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3068 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3069 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3070 | |
3071 | return 0; | |
3072 | } | |
3073 | ||
5829975c | 3074 | static uint32_t chv_signal_levels(struct intel_dp *intel_dp) |
e4a1d846 CML |
3075 | { |
3076 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3077 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3078 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3079 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3080 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3081 | uint8_t train_set = intel_dp->train_set[0]; |
3082 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3083 | enum pipe pipe = intel_crtc->pipe; |
3084 | int i; | |
e4a1d846 CML |
3085 | |
3086 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3087 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3088 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3089 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3090 | deemph_reg_value = 128; |
3091 | margin_reg_value = 52; | |
3092 | break; | |
bd60018a | 3093 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3094 | deemph_reg_value = 128; |
3095 | margin_reg_value = 77; | |
3096 | break; | |
bd60018a | 3097 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3098 | deemph_reg_value = 128; |
3099 | margin_reg_value = 102; | |
3100 | break; | |
bd60018a | 3101 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3102 | deemph_reg_value = 128; |
3103 | margin_reg_value = 154; | |
3104 | /* FIXME extra to set for 1200 */ | |
3105 | break; | |
3106 | default: | |
3107 | return 0; | |
3108 | } | |
3109 | break; | |
bd60018a | 3110 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3111 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3112 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3113 | deemph_reg_value = 85; |
3114 | margin_reg_value = 78; | |
3115 | break; | |
bd60018a | 3116 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3117 | deemph_reg_value = 85; |
3118 | margin_reg_value = 116; | |
3119 | break; | |
bd60018a | 3120 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3121 | deemph_reg_value = 85; |
3122 | margin_reg_value = 154; | |
3123 | break; | |
3124 | default: | |
3125 | return 0; | |
3126 | } | |
3127 | break; | |
bd60018a | 3128 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3129 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3130 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3131 | deemph_reg_value = 64; |
3132 | margin_reg_value = 104; | |
3133 | break; | |
bd60018a | 3134 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3135 | deemph_reg_value = 64; |
3136 | margin_reg_value = 154; | |
3137 | break; | |
3138 | default: | |
3139 | return 0; | |
3140 | } | |
3141 | break; | |
bd60018a | 3142 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3143 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3144 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3145 | deemph_reg_value = 43; |
3146 | margin_reg_value = 154; | |
3147 | break; | |
3148 | default: | |
3149 | return 0; | |
3150 | } | |
3151 | break; | |
3152 | default: | |
3153 | return 0; | |
3154 | } | |
3155 | ||
3156 | mutex_lock(&dev_priv->dpio_lock); | |
3157 | ||
3158 | /* Clear calc init */ | |
1966e59e VS |
3159 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3160 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3161 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3162 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3163 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3164 | ||
3165 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3166 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3167 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3168 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3169 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3170 | |
a02ef3c7 VS |
3171 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3172 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3173 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3174 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3175 | ||
3176 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3177 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3178 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3179 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3180 | ||
e4a1d846 | 3181 | /* Program swing deemph */ |
f72df8db VS |
3182 | for (i = 0; i < 4; i++) { |
3183 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3184 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3185 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3186 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3187 | } | |
e4a1d846 CML |
3188 | |
3189 | /* Program swing margin */ | |
f72df8db VS |
3190 | for (i = 0; i < 4; i++) { |
3191 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3192 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3193 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3194 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3195 | } | |
e4a1d846 CML |
3196 | |
3197 | /* Disable unique transition scale */ | |
f72df8db VS |
3198 | for (i = 0; i < 4; i++) { |
3199 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3200 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3201 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3202 | } | |
e4a1d846 CML |
3203 | |
3204 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3205 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3206 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3207 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3208 | |
3209 | /* | |
3210 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3211 | * for ch1. Might be a typo in the doc. | |
3212 | * For now, for this unique transition scale selection, set bit | |
3213 | * 27 for ch0 and ch1. | |
3214 | */ | |
f72df8db VS |
3215 | for (i = 0; i < 4; i++) { |
3216 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3217 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3218 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3219 | } | |
e4a1d846 | 3220 | |
f72df8db VS |
3221 | for (i = 0; i < 4; i++) { |
3222 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3223 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3224 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3225 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3226 | } | |
e4a1d846 CML |
3227 | } |
3228 | ||
3229 | /* Start swing calculation */ | |
1966e59e VS |
3230 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3231 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3232 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3233 | ||
3234 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3235 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3236 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3237 | |
3238 | /* LRC Bypass */ | |
3239 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3240 | val |= DPIO_LRC_BYPASS; | |
3241 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3242 | ||
3243 | mutex_unlock(&dev_priv->dpio_lock); | |
3244 | ||
3245 | return 0; | |
3246 | } | |
3247 | ||
a4fc5ed6 | 3248 | static void |
0301b3ac JN |
3249 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3250 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3251 | { |
3252 | uint8_t v = 0; | |
3253 | uint8_t p = 0; | |
3254 | int lane; | |
1a2eb460 KP |
3255 | uint8_t voltage_max; |
3256 | uint8_t preemph_max; | |
a4fc5ed6 | 3257 | |
33a34e4e | 3258 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3259 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3260 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3261 | |
3262 | if (this_v > v) | |
3263 | v = this_v; | |
3264 | if (this_p > p) | |
3265 | p = this_p; | |
3266 | } | |
3267 | ||
1a2eb460 | 3268 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3269 | if (v >= voltage_max) |
3270 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3271 | |
1a2eb460 KP |
3272 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3273 | if (p >= preemph_max) | |
3274 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3275 | |
3276 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3277 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3278 | } |
3279 | ||
3280 | static uint32_t | |
5829975c | 3281 | gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3282 | { |
3cf2efb1 | 3283 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3284 | |
3cf2efb1 | 3285 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3286 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3287 | default: |
3288 | signal_levels |= DP_VOLTAGE_0_4; | |
3289 | break; | |
bd60018a | 3290 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3291 | signal_levels |= DP_VOLTAGE_0_6; |
3292 | break; | |
bd60018a | 3293 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3294 | signal_levels |= DP_VOLTAGE_0_8; |
3295 | break; | |
bd60018a | 3296 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3297 | signal_levels |= DP_VOLTAGE_1_2; |
3298 | break; | |
3299 | } | |
3cf2efb1 | 3300 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3301 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3302 | default: |
3303 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3304 | break; | |
bd60018a | 3305 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3306 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3307 | break; | |
bd60018a | 3308 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3309 | signal_levels |= DP_PRE_EMPHASIS_6; |
3310 | break; | |
bd60018a | 3311 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3312 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3313 | break; | |
3314 | } | |
3315 | return signal_levels; | |
3316 | } | |
3317 | ||
e3421a18 ZW |
3318 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3319 | static uint32_t | |
5829975c | 3320 | gen6_edp_signal_levels(uint8_t train_set) |
e3421a18 | 3321 | { |
3c5a62b5 YL |
3322 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3323 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3324 | switch (signal_levels) { | |
bd60018a SJ |
3325 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3326 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3327 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3328 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3329 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3330 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3331 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3332 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3333 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3334 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3335 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3336 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3337 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3338 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3339 | default: |
3c5a62b5 YL |
3340 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3341 | "0x%x\n", signal_levels); | |
3342 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3343 | } |
3344 | } | |
3345 | ||
1a2eb460 KP |
3346 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3347 | static uint32_t | |
5829975c | 3348 | gen7_edp_signal_levels(uint8_t train_set) |
1a2eb460 KP |
3349 | { |
3350 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3351 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3352 | switch (signal_levels) { | |
bd60018a | 3353 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3354 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3355 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3356 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3357 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3358 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3359 | ||
bd60018a | 3360 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3361 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3362 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3363 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3364 | ||
bd60018a | 3365 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3366 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3367 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3368 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3369 | ||
3370 | default: | |
3371 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3372 | "0x%x\n", signal_levels); | |
3373 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3374 | } | |
3375 | } | |
3376 | ||
d6c0d722 PZ |
3377 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3378 | static uint32_t | |
5829975c | 3379 | hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3380 | { |
d6c0d722 PZ |
3381 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3382 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3383 | switch (signal_levels) { | |
bd60018a | 3384 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3385 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3386 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3387 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3388 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3389 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3390 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3391 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3392 | |
bd60018a | 3393 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3394 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3395 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3396 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3397 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3398 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3399 | |
bd60018a | 3400 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3401 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3402 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3403 | return DDI_BUF_TRANS_SELECT(8); |
7ad14a29 SJ |
3404 | |
3405 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3406 | return DDI_BUF_TRANS_SELECT(9); | |
d6c0d722 PZ |
3407 | default: |
3408 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3409 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3410 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3411 | } |
a4fc5ed6 KP |
3412 | } |
3413 | ||
5829975c | 3414 | static void bxt_signal_levels(struct intel_dp *intel_dp) |
96fb9f9b VK |
3415 | { |
3416 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3417 | enum port port = dport->port; | |
3418 | struct drm_device *dev = dport->base.base.dev; | |
3419 | struct intel_encoder *encoder = &dport->base; | |
3420 | uint8_t train_set = intel_dp->train_set[0]; | |
3421 | uint32_t level = 0; | |
3422 | ||
3423 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3424 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3425 | switch (signal_levels) { | |
3426 | default: | |
3427 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emph level\n"); | |
3428 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3429 | level = 0; | |
3430 | break; | |
3431 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3432 | level = 1; | |
3433 | break; | |
3434 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3435 | level = 2; | |
3436 | break; | |
3437 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: | |
3438 | level = 3; | |
3439 | break; | |
3440 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3441 | level = 4; | |
3442 | break; | |
3443 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3444 | level = 5; | |
3445 | break; | |
3446 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3447 | level = 6; | |
3448 | break; | |
3449 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3450 | level = 7; | |
3451 | break; | |
3452 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3453 | level = 8; | |
3454 | break; | |
3455 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3456 | level = 9; | |
3457 | break; | |
3458 | } | |
3459 | ||
3460 | bxt_ddi_vswing_sequence(dev, level, port, encoder->type); | |
3461 | } | |
3462 | ||
f0a3424e PZ |
3463 | /* Properly updates "DP" with the correct signal levels. */ |
3464 | static void | |
3465 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3466 | { | |
3467 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3468 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3469 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3470 | uint32_t signal_levels, mask; | |
3471 | uint8_t train_set = intel_dp->train_set[0]; | |
3472 | ||
96fb9f9b VK |
3473 | if (IS_BROXTON(dev)) { |
3474 | signal_levels = 0; | |
5829975c | 3475 | bxt_signal_levels(intel_dp); |
96fb9f9b VK |
3476 | mask = 0; |
3477 | } else if (HAS_DDI(dev)) { | |
5829975c | 3478 | signal_levels = hsw_signal_levels(train_set); |
f0a3424e | 3479 | mask = DDI_BUF_EMP_MASK; |
e4a1d846 | 3480 | } else if (IS_CHERRYVIEW(dev)) { |
5829975c | 3481 | signal_levels = chv_signal_levels(intel_dp); |
e4a1d846 | 3482 | mask = 0; |
e2fa6fba | 3483 | } else if (IS_VALLEYVIEW(dev)) { |
5829975c | 3484 | signal_levels = vlv_signal_levels(intel_dp); |
e2fa6fba | 3485 | mask = 0; |
bc7d38a4 | 3486 | } else if (IS_GEN7(dev) && port == PORT_A) { |
5829975c | 3487 | signal_levels = gen7_edp_signal_levels(train_set); |
f0a3424e | 3488 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
bc7d38a4 | 3489 | } else if (IS_GEN6(dev) && port == PORT_A) { |
5829975c | 3490 | signal_levels = gen6_edp_signal_levels(train_set); |
f0a3424e PZ |
3491 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
3492 | } else { | |
5829975c | 3493 | signal_levels = gen4_signal_levels(train_set); |
f0a3424e PZ |
3494 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
3495 | } | |
3496 | ||
96fb9f9b VK |
3497 | if (mask) |
3498 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3499 | ||
3500 | DRM_DEBUG_KMS("Using vswing level %d\n", | |
3501 | train_set & DP_TRAIN_VOLTAGE_SWING_MASK); | |
3502 | DRM_DEBUG_KMS("Using pre-emphasis level %d\n", | |
3503 | (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> | |
3504 | DP_TRAIN_PRE_EMPHASIS_SHIFT); | |
f0a3424e PZ |
3505 | |
3506 | *DP = (*DP & ~mask) | signal_levels; | |
3507 | } | |
3508 | ||
a4fc5ed6 | 3509 | static bool |
ea5b213a | 3510 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3511 | uint32_t *DP, |
58e10eb9 | 3512 | uint8_t dp_train_pat) |
a4fc5ed6 | 3513 | { |
174edf1f PZ |
3514 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3515 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3516 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3517 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3518 | int ret, len; | |
a4fc5ed6 | 3519 | |
7b13b58a | 3520 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3521 | |
70aff66c | 3522 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3523 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3524 | |
2cdfe6c8 JN |
3525 | buf[0] = dp_train_pat; |
3526 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3527 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3528 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3529 | len = 1; | |
3530 | } else { | |
3531 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3532 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3533 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3534 | } |
a4fc5ed6 | 3535 | |
9d1a1031 JN |
3536 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3537 | buf, len); | |
2cdfe6c8 JN |
3538 | |
3539 | return ret == len; | |
a4fc5ed6 KP |
3540 | } |
3541 | ||
70aff66c JN |
3542 | static bool |
3543 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3544 | uint8_t dp_train_pat) | |
3545 | { | |
953d22e8 | 3546 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3547 | intel_dp_set_signal_levels(intel_dp, DP); |
3548 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3549 | } | |
3550 | ||
3551 | static bool | |
3552 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3553 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3554 | { |
3555 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3556 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3557 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3558 | int ret; | |
3559 | ||
3560 | intel_get_adjust_train(intel_dp, link_status); | |
3561 | intel_dp_set_signal_levels(intel_dp, DP); | |
3562 | ||
3563 | I915_WRITE(intel_dp->output_reg, *DP); | |
3564 | POSTING_READ(intel_dp->output_reg); | |
3565 | ||
9d1a1031 JN |
3566 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3567 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3568 | |
3569 | return ret == intel_dp->lane_count; | |
3570 | } | |
3571 | ||
3ab9c637 ID |
3572 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3573 | { | |
3574 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3575 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3576 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3577 | enum port port = intel_dig_port->port; | |
3578 | uint32_t val; | |
3579 | ||
3580 | if (!HAS_DDI(dev)) | |
3581 | return; | |
3582 | ||
3583 | val = I915_READ(DP_TP_CTL(port)); | |
3584 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3585 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3586 | I915_WRITE(DP_TP_CTL(port), val); | |
3587 | ||
3588 | /* | |
3589 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3590 | * we need to set idle transmission mode is to work around a HW issue | |
3591 | * where we enable the pipe while not in idle link-training mode. | |
3592 | * In this case there is requirement to wait for a minimum number of | |
3593 | * idle patterns to be sent. | |
3594 | */ | |
3595 | if (port == PORT_A) | |
3596 | return; | |
3597 | ||
3598 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3599 | 1)) | |
3600 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3601 | } | |
3602 | ||
33a34e4e | 3603 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3604 | void |
33a34e4e | 3605 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3606 | { |
da63a9f2 | 3607 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3608 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3609 | int i; |
3610 | uint8_t voltage; | |
cdb0e95b | 3611 | int voltage_tries, loop_tries; |
ea5b213a | 3612 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3613 | uint8_t link_config[2]; |
a4fc5ed6 | 3614 | |
affa9354 | 3615 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3616 | intel_ddi_prepare_link_retrain(encoder); |
3617 | ||
3cf2efb1 | 3618 | /* Write the link configuration data */ |
6aba5b6c JN |
3619 | link_config[0] = intel_dp->link_bw; |
3620 | link_config[1] = intel_dp->lane_count; | |
3621 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3622 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3623 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
94ca719e | 3624 | if (intel_dp->num_sink_rates) |
a8f3ef61 SJ |
3625 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
3626 | &intel_dp->rate_select, 1); | |
6aba5b6c JN |
3627 | |
3628 | link_config[0] = 0; | |
3629 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3630 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3631 | |
3632 | DP |= DP_PORT_EN; | |
1a2eb460 | 3633 | |
70aff66c JN |
3634 | /* clock recovery */ |
3635 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3636 | DP_TRAINING_PATTERN_1 | | |
3637 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3638 | DRM_ERROR("failed to enable link training\n"); | |
3639 | return; | |
3640 | } | |
3641 | ||
a4fc5ed6 | 3642 | voltage = 0xff; |
cdb0e95b KP |
3643 | voltage_tries = 0; |
3644 | loop_tries = 0; | |
a4fc5ed6 | 3645 | for (;;) { |
70aff66c | 3646 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3647 | |
a7c9655f | 3648 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3649 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3650 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3651 | break; |
93f62dad | 3652 | } |
a4fc5ed6 | 3653 | |
01916270 | 3654 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3655 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3656 | break; |
3657 | } | |
3658 | ||
3659 | /* Check to see if we've tried the max voltage */ | |
3660 | for (i = 0; i < intel_dp->lane_count; i++) | |
3661 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3662 | break; |
3b4f819d | 3663 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3664 | ++loop_tries; |
3665 | if (loop_tries == 5) { | |
3def84b3 | 3666 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3667 | break; |
3668 | } | |
70aff66c JN |
3669 | intel_dp_reset_link_train(intel_dp, &DP, |
3670 | DP_TRAINING_PATTERN_1 | | |
3671 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3672 | voltage_tries = 0; |
3673 | continue; | |
3674 | } | |
a4fc5ed6 | 3675 | |
3cf2efb1 | 3676 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3677 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3678 | ++voltage_tries; |
b06fbda3 | 3679 | if (voltage_tries == 5) { |
3def84b3 | 3680 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3681 | break; |
3682 | } | |
3683 | } else | |
3684 | voltage_tries = 0; | |
3685 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3686 | |
70aff66c JN |
3687 | /* Update training set as requested by target */ |
3688 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3689 | DRM_ERROR("failed to update link training\n"); | |
3690 | break; | |
3691 | } | |
a4fc5ed6 KP |
3692 | } |
3693 | ||
33a34e4e JB |
3694 | intel_dp->DP = DP; |
3695 | } | |
3696 | ||
c19b0669 | 3697 | void |
33a34e4e JB |
3698 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3699 | { | |
33a34e4e | 3700 | bool channel_eq = false; |
37f80975 | 3701 | int tries, cr_tries; |
33a34e4e | 3702 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3703 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3704 | ||
3705 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3706 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3707 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3708 | |
a4fc5ed6 | 3709 | /* channel equalization */ |
70aff66c | 3710 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3711 | training_pattern | |
70aff66c JN |
3712 | DP_LINK_SCRAMBLING_DISABLE)) { |
3713 | DRM_ERROR("failed to start channel equalization\n"); | |
3714 | return; | |
3715 | } | |
3716 | ||
a4fc5ed6 | 3717 | tries = 0; |
37f80975 | 3718 | cr_tries = 0; |
a4fc5ed6 KP |
3719 | channel_eq = false; |
3720 | for (;;) { | |
70aff66c | 3721 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3722 | |
37f80975 JB |
3723 | if (cr_tries > 5) { |
3724 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3725 | break; |
3726 | } | |
3727 | ||
a7c9655f | 3728 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3729 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3730 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3731 | break; |
70aff66c | 3732 | } |
a4fc5ed6 | 3733 | |
37f80975 | 3734 | /* Make sure clock is still ok */ |
01916270 | 3735 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3736 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3737 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3738 | training_pattern | |
70aff66c | 3739 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3740 | cr_tries++; |
3741 | continue; | |
3742 | } | |
3743 | ||
1ffdff13 | 3744 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3745 | channel_eq = true; |
3746 | break; | |
3747 | } | |
a4fc5ed6 | 3748 | |
37f80975 JB |
3749 | /* Try 5 times, then try clock recovery if that fails */ |
3750 | if (tries > 5) { | |
37f80975 | 3751 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3752 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3753 | training_pattern | |
70aff66c | 3754 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3755 | tries = 0; |
3756 | cr_tries++; | |
3757 | continue; | |
3758 | } | |
a4fc5ed6 | 3759 | |
70aff66c JN |
3760 | /* Update training set as requested by target */ |
3761 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3762 | DRM_ERROR("failed to update link training\n"); | |
3763 | break; | |
3764 | } | |
3cf2efb1 | 3765 | ++tries; |
869184a6 | 3766 | } |
3cf2efb1 | 3767 | |
3ab9c637 ID |
3768 | intel_dp_set_idle_link_train(intel_dp); |
3769 | ||
3770 | intel_dp->DP = DP; | |
3771 | ||
d6c0d722 | 3772 | if (channel_eq) |
07f42258 | 3773 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3774 | |
3ab9c637 ID |
3775 | } |
3776 | ||
3777 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3778 | { | |
70aff66c | 3779 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3780 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3781 | } |
3782 | ||
3783 | static void | |
ea5b213a | 3784 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3785 | { |
da63a9f2 | 3786 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3787 | enum port port = intel_dig_port->port; |
da63a9f2 | 3788 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3789 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3790 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3791 | |
bc76e320 | 3792 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3793 | return; |
3794 | ||
0c33d8d7 | 3795 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3796 | return; |
3797 | ||
28c97730 | 3798 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3799 | |
bc7d38a4 | 3800 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3801 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3802 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3803 | } else { |
aad3d14d VS |
3804 | if (IS_CHERRYVIEW(dev)) |
3805 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3806 | else | |
3807 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3808 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3809 | } |
fe255d00 | 3810 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3811 | |
493a7081 | 3812 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3813 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
5bddd17f EA |
3814 | /* Hardware workaround: leaving our transcoder select |
3815 | * set to transcoder B while it's off will prevent the | |
3816 | * corresponding HDMI output on transcoder A. | |
3817 | * | |
3818 | * Combine this with another hardware workaround: | |
3819 | * transcoder select bit can only be cleared while the | |
3820 | * port is enabled. | |
3821 | */ | |
3822 | DP &= ~DP_PIPEB_SELECT; | |
3823 | I915_WRITE(intel_dp->output_reg, DP); | |
0ca09685 | 3824 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3825 | } |
3826 | ||
832afda6 | 3827 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3828 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3829 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3830 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3831 | } |
3832 | ||
26d61aad KP |
3833 | static bool |
3834 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3835 | { |
a031d709 RV |
3836 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3837 | struct drm_device *dev = dig_port->base.base.dev; | |
3838 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3839 | uint8_t rev; |
a031d709 | 3840 | |
9d1a1031 JN |
3841 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3842 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3843 | return false; /* aux transfer failed */ |
92fd8fd1 | 3844 | |
a8e98153 | 3845 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3846 | |
edb39244 AJ |
3847 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3848 | return false; /* DPCD not present */ | |
3849 | ||
2293bb5c SK |
3850 | /* Check if the panel supports PSR */ |
3851 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3852 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3853 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3854 | intel_dp->psr_dpcd, | |
3855 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3856 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3857 | dev_priv->psr.sink_support = true; | |
50003939 | 3858 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3859 | } |
474d1ec4 SJ |
3860 | |
3861 | if (INTEL_INFO(dev)->gen >= 9 && | |
3862 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { | |
3863 | uint8_t frame_sync_cap; | |
3864 | ||
3865 | dev_priv->psr.sink_support = true; | |
3866 | intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3867 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, | |
3868 | &frame_sync_cap, 1); | |
3869 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; | |
3870 | /* PSR2 needs frame sync as well */ | |
3871 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; | |
3872 | DRM_DEBUG_KMS("PSR2 %s on sink", | |
3873 | dev_priv->psr.psr2_support ? "supported" : "not supported"); | |
3874 | } | |
50003939 JN |
3875 | } |
3876 | ||
7809a611 | 3877 | /* Training Pattern 3 support, both source and sink */ |
06ea66b6 | 3878 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
7809a611 JN |
3879 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
3880 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { | |
06ea66b6 | 3881 | intel_dp->use_tps3 = true; |
f8d8a672 | 3882 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3883 | } else |
3884 | intel_dp->use_tps3 = false; | |
3885 | ||
fc0f8e25 SJ |
3886 | /* Intermediate frequency support */ |
3887 | if (is_edp(intel_dp) && | |
3888 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3889 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
3890 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
94ca719e | 3891 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
ea2d8a42 VS |
3892 | int i; |
3893 | ||
fc0f8e25 SJ |
3894 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
3895 | DP_SUPPORTED_LINK_RATES, | |
94ca719e VS |
3896 | sink_rates, |
3897 | sizeof(sink_rates)); | |
ea2d8a42 | 3898 | |
94ca719e VS |
3899 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
3900 | int val = le16_to_cpu(sink_rates[i]); | |
ea2d8a42 VS |
3901 | |
3902 | if (val == 0) | |
3903 | break; | |
3904 | ||
94ca719e | 3905 | intel_dp->sink_rates[i] = val * 200; |
ea2d8a42 | 3906 | } |
94ca719e | 3907 | intel_dp->num_sink_rates = i; |
fc0f8e25 | 3908 | } |
0336400e VS |
3909 | |
3910 | intel_dp_print_rates(intel_dp); | |
3911 | ||
edb39244 AJ |
3912 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3913 | DP_DWN_STRM_PORT_PRESENT)) | |
3914 | return true; /* native DP sink */ | |
3915 | ||
3916 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3917 | return true; /* no per-port downstream info */ | |
3918 | ||
9d1a1031 JN |
3919 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3920 | intel_dp->downstream_ports, | |
3921 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3922 | return false; /* downstream port status fetch failed */ |
3923 | ||
3924 | return true; | |
92fd8fd1 KP |
3925 | } |
3926 | ||
0d198328 AJ |
3927 | static void |
3928 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3929 | { | |
3930 | u8 buf[3]; | |
3931 | ||
3932 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3933 | return; | |
3934 | ||
9d1a1031 | 3935 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3936 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3937 | buf[0], buf[1], buf[2]); | |
3938 | ||
9d1a1031 | 3939 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3940 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3941 | buf[0], buf[1], buf[2]); | |
3942 | } | |
3943 | ||
0e32b39c DA |
3944 | static bool |
3945 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3946 | { | |
3947 | u8 buf[1]; | |
3948 | ||
3949 | if (!intel_dp->can_mst) | |
3950 | return false; | |
3951 | ||
3952 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3953 | return false; | |
3954 | ||
0e32b39c DA |
3955 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3956 | if (buf[0] & DP_MST_CAP) { | |
3957 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3958 | intel_dp->is_mst = true; | |
3959 | } else { | |
3960 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3961 | intel_dp->is_mst = false; | |
3962 | } | |
3963 | } | |
0e32b39c DA |
3964 | |
3965 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3966 | return intel_dp->is_mst; | |
3967 | } | |
3968 | ||
d2e216d0 RV |
3969 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3970 | { | |
3971 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3972 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3973 | struct intel_crtc *intel_crtc = | |
3974 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ad9dc91b RV |
3975 | u8 buf; |
3976 | int test_crc_count; | |
3977 | int attempts = 6; | |
d2e216d0 | 3978 | |
ad9dc91b | 3979 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3980 | return -EIO; |
d2e216d0 | 3981 | |
ad9dc91b | 3982 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
d2e216d0 RV |
3983 | return -ENOTTY; |
3984 | ||
1dda5f93 RV |
3985 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3986 | return -EIO; | |
3987 | ||
9d1a1031 | 3988 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
ce31d9f4 | 3989 | buf | DP_TEST_SINK_START) < 0) |
bda0381e | 3990 | return -EIO; |
d2e216d0 | 3991 | |
1dda5f93 | 3992 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3993 | return -EIO; |
ad9dc91b | 3994 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
d2e216d0 | 3995 | |
ad9dc91b | 3996 | do { |
1dda5f93 RV |
3997 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
3998 | DP_TEST_SINK_MISC, &buf) < 0) | |
3999 | return -EIO; | |
ad9dc91b RV |
4000 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
4001 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); | |
4002 | ||
4003 | if (attempts == 0) { | |
90bd1f46 DV |
4004 | DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n"); |
4005 | return -ETIMEDOUT; | |
ad9dc91b | 4006 | } |
d2e216d0 | 4007 | |
9d1a1031 | 4008 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
bda0381e | 4009 | return -EIO; |
d2e216d0 | 4010 | |
1dda5f93 RV |
4011 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
4012 | return -EIO; | |
4013 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, | |
4014 | buf & ~DP_TEST_SINK_START) < 0) | |
4015 | return -EIO; | |
ce31d9f4 | 4016 | |
d2e216d0 RV |
4017 | return 0; |
4018 | } | |
4019 | ||
a60f0e38 JB |
4020 | static bool |
4021 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4022 | { | |
9d1a1031 JN |
4023 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
4024 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4025 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
4026 | } |
4027 | ||
0e32b39c DA |
4028 | static bool |
4029 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4030 | { | |
4031 | int ret; | |
4032 | ||
4033 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
4034 | DP_SINK_COUNT_ESI, | |
4035 | sink_irq_vector, 14); | |
4036 | if (ret != 14) | |
4037 | return false; | |
4038 | ||
4039 | return true; | |
4040 | } | |
4041 | ||
c5d5ab7a TP |
4042 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
4043 | { | |
4044 | uint8_t test_result = DP_TEST_ACK; | |
4045 | return test_result; | |
4046 | } | |
4047 | ||
4048 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) | |
4049 | { | |
4050 | uint8_t test_result = DP_TEST_NAK; | |
4051 | return test_result; | |
4052 | } | |
4053 | ||
4054 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) | |
4055 | { | |
4056 | uint8_t test_result = DP_TEST_NAK; | |
4057 | return test_result; | |
4058 | } | |
4059 | ||
4060 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) | |
a60f0e38 | 4061 | { |
c5d5ab7a TP |
4062 | uint8_t test_result = DP_TEST_NAK; |
4063 | return test_result; | |
4064 | } | |
4065 | ||
4066 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
4067 | { | |
4068 | uint8_t response = DP_TEST_NAK; | |
4069 | uint8_t rxdata = 0; | |
4070 | int status = 0; | |
4071 | ||
4072 | intel_dp->compliance_test_type = 0; | |
4073 | intel_dp->aux.i2c_nack_count = 0; | |
4074 | intel_dp->aux.i2c_defer_count = 0; | |
4075 | ||
4076 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); | |
4077 | if (status <= 0) { | |
4078 | DRM_DEBUG_KMS("Could not read test request from sink\n"); | |
4079 | goto update_status; | |
4080 | } | |
4081 | ||
4082 | switch (rxdata) { | |
4083 | case DP_TEST_LINK_TRAINING: | |
4084 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); | |
4085 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; | |
4086 | response = intel_dp_autotest_link_training(intel_dp); | |
4087 | break; | |
4088 | case DP_TEST_LINK_VIDEO_PATTERN: | |
4089 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); | |
4090 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; | |
4091 | response = intel_dp_autotest_video_pattern(intel_dp); | |
4092 | break; | |
4093 | case DP_TEST_LINK_EDID_READ: | |
4094 | DRM_DEBUG_KMS("EDID test requested\n"); | |
4095 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; | |
4096 | response = intel_dp_autotest_edid(intel_dp); | |
4097 | break; | |
4098 | case DP_TEST_LINK_PHY_TEST_PATTERN: | |
4099 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); | |
4100 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; | |
4101 | response = intel_dp_autotest_phy_pattern(intel_dp); | |
4102 | break; | |
4103 | default: | |
4104 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); | |
4105 | break; | |
4106 | } | |
4107 | ||
4108 | update_status: | |
4109 | status = drm_dp_dpcd_write(&intel_dp->aux, | |
4110 | DP_TEST_RESPONSE, | |
4111 | &response, 1); | |
4112 | if (status <= 0) | |
4113 | DRM_DEBUG_KMS("Could not write test response to sink\n"); | |
a60f0e38 JB |
4114 | } |
4115 | ||
0e32b39c DA |
4116 | static int |
4117 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
4118 | { | |
4119 | bool bret; | |
4120 | ||
4121 | if (intel_dp->is_mst) { | |
4122 | u8 esi[16] = { 0 }; | |
4123 | int ret = 0; | |
4124 | int retry; | |
4125 | bool handled; | |
4126 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4127 | go_again: | |
4128 | if (bret == true) { | |
4129 | ||
4130 | /* check link status - esi[10] = 0x200c */ | |
4131 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
4132 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
4133 | intel_dp_start_link_train(intel_dp); | |
4134 | intel_dp_complete_link_train(intel_dp); | |
4135 | intel_dp_stop_link_train(intel_dp); | |
4136 | } | |
4137 | ||
6f34cc39 | 4138 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
4139 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
4140 | ||
4141 | if (handled) { | |
4142 | for (retry = 0; retry < 3; retry++) { | |
4143 | int wret; | |
4144 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
4145 | DP_SINK_COUNT_ESI+1, | |
4146 | &esi[1], 3); | |
4147 | if (wret == 3) { | |
4148 | break; | |
4149 | } | |
4150 | } | |
4151 | ||
4152 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4153 | if (bret == true) { | |
6f34cc39 | 4154 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
4155 | goto go_again; |
4156 | } | |
4157 | } else | |
4158 | ret = 0; | |
4159 | ||
4160 | return ret; | |
4161 | } else { | |
4162 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4163 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
4164 | intel_dp->is_mst = false; | |
4165 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4166 | /* send a hotplug event */ | |
4167 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
4168 | } | |
4169 | } | |
4170 | return -EINVAL; | |
4171 | } | |
4172 | ||
a4fc5ed6 KP |
4173 | /* |
4174 | * According to DP spec | |
4175 | * 5.1.2: | |
4176 | * 1. Read DPCD | |
4177 | * 2. Configure link according to Receiver Capabilities | |
4178 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4179 | * 4. Check link status on receipt of hot-plug interrupt | |
4180 | */ | |
a5146200 | 4181 | static void |
ea5b213a | 4182 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 4183 | { |
5b215bcf | 4184 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 4185 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 4186 | u8 sink_irq_vector; |
93f62dad | 4187 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 4188 | |
5b215bcf DA |
4189 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
4190 | ||
da63a9f2 | 4191 | if (!intel_encoder->connectors_active) |
d2b996ac | 4192 | return; |
59cd09e1 | 4193 | |
da63a9f2 | 4194 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
4195 | return; |
4196 | ||
1a125d8a ID |
4197 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
4198 | return; | |
4199 | ||
92fd8fd1 | 4200 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 4201 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
4202 | return; |
4203 | } | |
4204 | ||
92fd8fd1 | 4205 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 4206 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
4207 | return; |
4208 | } | |
4209 | ||
a60f0e38 JB |
4210 | /* Try to read the source of the interrupt */ |
4211 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4212 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4213 | /* Clear interrupt source */ | |
9d1a1031 JN |
4214 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4215 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4216 | sink_irq_vector); | |
a60f0e38 JB |
4217 | |
4218 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4219 | intel_dp_handle_test_request(intel_dp); | |
4220 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4221 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4222 | } | |
4223 | ||
1ffdff13 | 4224 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4225 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4226 | intel_encoder->base.name); |
33a34e4e JB |
4227 | intel_dp_start_link_train(intel_dp); |
4228 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4229 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4230 | } |
a4fc5ed6 | 4231 | } |
a4fc5ed6 | 4232 | |
caf9ab24 | 4233 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4234 | static enum drm_connector_status |
26d61aad | 4235 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4236 | { |
caf9ab24 | 4237 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4238 | uint8_t type; |
4239 | ||
4240 | if (!intel_dp_get_dpcd(intel_dp)) | |
4241 | return connector_status_disconnected; | |
4242 | ||
4243 | /* if there's no downstream port, we're done */ | |
4244 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4245 | return connector_status_connected; |
caf9ab24 AJ |
4246 | |
4247 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4248 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4249 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4250 | uint8_t reg; |
9d1a1031 JN |
4251 | |
4252 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4253 | ®, 1) < 0) | |
caf9ab24 | 4254 | return connector_status_unknown; |
9d1a1031 | 4255 | |
23235177 AJ |
4256 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4257 | : connector_status_disconnected; | |
caf9ab24 AJ |
4258 | } |
4259 | ||
4260 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4261 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4262 | return connector_status_connected; |
caf9ab24 AJ |
4263 | |
4264 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4265 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4266 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4267 | if (type == DP_DS_PORT_TYPE_VGA || | |
4268 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4269 | return connector_status_unknown; | |
4270 | } else { | |
4271 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4272 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4273 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4274 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4275 | return connector_status_unknown; | |
4276 | } | |
caf9ab24 AJ |
4277 | |
4278 | /* Anything else is out of spec, warn and ignore */ | |
4279 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4280 | return connector_status_disconnected; |
71ba9000 AJ |
4281 | } |
4282 | ||
d410b56d CW |
4283 | static enum drm_connector_status |
4284 | edp_detect(struct intel_dp *intel_dp) | |
4285 | { | |
4286 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4287 | enum drm_connector_status status; | |
4288 | ||
4289 | status = intel_panel_detect(dev); | |
4290 | if (status == connector_status_unknown) | |
4291 | status = connector_status_connected; | |
4292 | ||
4293 | return status; | |
4294 | } | |
4295 | ||
5eb08b69 | 4296 | static enum drm_connector_status |
a9756bb5 | 4297 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4298 | { |
30add22d | 4299 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4300 | struct drm_i915_private *dev_priv = dev->dev_private; |
4301 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4302 | |
1b469639 DL |
4303 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4304 | return connector_status_disconnected; | |
4305 | ||
26d61aad | 4306 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4307 | } |
4308 | ||
2a592bec DA |
4309 | static int g4x_digital_port_connected(struct drm_device *dev, |
4310 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4311 | { |
a4fc5ed6 | 4312 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4313 | uint32_t bit; |
5eb08b69 | 4314 | |
232a6ee9 TP |
4315 | if (IS_VALLEYVIEW(dev)) { |
4316 | switch (intel_dig_port->port) { | |
4317 | case PORT_B: | |
4318 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4319 | break; | |
4320 | case PORT_C: | |
4321 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4322 | break; | |
4323 | case PORT_D: | |
4324 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4325 | break; | |
4326 | default: | |
2a592bec | 4327 | return -EINVAL; |
232a6ee9 TP |
4328 | } |
4329 | } else { | |
4330 | switch (intel_dig_port->port) { | |
4331 | case PORT_B: | |
4332 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4333 | break; | |
4334 | case PORT_C: | |
4335 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4336 | break; | |
4337 | case PORT_D: | |
4338 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4339 | break; | |
4340 | default: | |
2a592bec | 4341 | return -EINVAL; |
232a6ee9 | 4342 | } |
a4fc5ed6 KP |
4343 | } |
4344 | ||
10f76a38 | 4345 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4346 | return 0; |
4347 | return 1; | |
4348 | } | |
4349 | ||
4350 | static enum drm_connector_status | |
4351 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4352 | { | |
4353 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4354 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4355 | int ret; | |
4356 | ||
4357 | /* Can't disconnect eDP, but you can close the lid... */ | |
4358 | if (is_edp(intel_dp)) { | |
4359 | enum drm_connector_status status; | |
4360 | ||
4361 | status = intel_panel_detect(dev); | |
4362 | if (status == connector_status_unknown) | |
4363 | status = connector_status_connected; | |
4364 | return status; | |
4365 | } | |
4366 | ||
4367 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4368 | if (ret == -EINVAL) | |
4369 | return connector_status_unknown; | |
4370 | else if (ret == 0) | |
a4fc5ed6 KP |
4371 | return connector_status_disconnected; |
4372 | ||
26d61aad | 4373 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4374 | } |
4375 | ||
8c241fef | 4376 | static struct edid * |
beb60608 | 4377 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4378 | { |
beb60608 | 4379 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4380 | |
9cd300e0 JN |
4381 | /* use cached edid if we have one */ |
4382 | if (intel_connector->edid) { | |
9cd300e0 JN |
4383 | /* invalid edid */ |
4384 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4385 | return NULL; |
4386 | ||
55e9edeb | 4387 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4388 | } else |
4389 | return drm_get_edid(&intel_connector->base, | |
4390 | &intel_dp->aux.ddc); | |
4391 | } | |
8c241fef | 4392 | |
beb60608 CW |
4393 | static void |
4394 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4395 | { | |
4396 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4397 | struct edid *edid; | |
8c241fef | 4398 | |
beb60608 CW |
4399 | edid = intel_dp_get_edid(intel_dp); |
4400 | intel_connector->detect_edid = edid; | |
4401 | ||
4402 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4403 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4404 | else | |
4405 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4406 | } |
4407 | ||
beb60608 CW |
4408 | static void |
4409 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4410 | { |
beb60608 | 4411 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4412 | |
beb60608 CW |
4413 | kfree(intel_connector->detect_edid); |
4414 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4415 | |
beb60608 CW |
4416 | intel_dp->has_audio = false; |
4417 | } | |
d6f24d0f | 4418 | |
beb60608 CW |
4419 | static enum intel_display_power_domain |
4420 | intel_dp_power_get(struct intel_dp *dp) | |
4421 | { | |
4422 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4423 | enum intel_display_power_domain power_domain; | |
4424 | ||
4425 | power_domain = intel_display_port_power_domain(encoder); | |
4426 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4427 | ||
4428 | return power_domain; | |
4429 | } | |
d6f24d0f | 4430 | |
beb60608 CW |
4431 | static void |
4432 | intel_dp_power_put(struct intel_dp *dp, | |
4433 | enum intel_display_power_domain power_domain) | |
4434 | { | |
4435 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4436 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4437 | } |
4438 | ||
a9756bb5 ZW |
4439 | static enum drm_connector_status |
4440 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4441 | { | |
4442 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4443 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4444 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4445 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4446 | enum drm_connector_status status; |
671dedd2 | 4447 | enum intel_display_power_domain power_domain; |
0e32b39c | 4448 | bool ret; |
a9756bb5 | 4449 | |
164c8598 | 4450 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4451 | connector->base.id, connector->name); |
beb60608 | 4452 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4453 | |
0e32b39c DA |
4454 | if (intel_dp->is_mst) { |
4455 | /* MST devices are disconnected from a monitor POV */ | |
4456 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4457 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4458 | return connector_status_disconnected; |
0e32b39c DA |
4459 | } |
4460 | ||
beb60608 | 4461 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4462 | |
d410b56d CW |
4463 | /* Can't disconnect eDP, but you can close the lid... */ |
4464 | if (is_edp(intel_dp)) | |
4465 | status = edp_detect(intel_dp); | |
4466 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4467 | status = ironlake_dp_detect(intel_dp); |
4468 | else | |
4469 | status = g4x_dp_detect(intel_dp); | |
4470 | if (status != connector_status_connected) | |
c8c8fb33 | 4471 | goto out; |
a9756bb5 | 4472 | |
0d198328 AJ |
4473 | intel_dp_probe_oui(intel_dp); |
4474 | ||
0e32b39c DA |
4475 | ret = intel_dp_probe_mst(intel_dp); |
4476 | if (ret) { | |
4477 | /* if we are in MST mode then this connector | |
4478 | won't appear connected or have anything with EDID on it */ | |
4479 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4480 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4481 | status = connector_status_disconnected; | |
4482 | goto out; | |
4483 | } | |
4484 | ||
beb60608 | 4485 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4486 | |
d63885da PZ |
4487 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4488 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4489 | status = connector_status_connected; |
4490 | ||
4491 | out: | |
beb60608 | 4492 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4493 | return status; |
a4fc5ed6 KP |
4494 | } |
4495 | ||
beb60608 CW |
4496 | static void |
4497 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4498 | { |
df0e9248 | 4499 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4500 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4501 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4502 | |
beb60608 CW |
4503 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4504 | connector->base.id, connector->name); | |
4505 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4506 | |
beb60608 CW |
4507 | if (connector->status != connector_status_connected) |
4508 | return; | |
671dedd2 | 4509 | |
beb60608 CW |
4510 | power_domain = intel_dp_power_get(intel_dp); |
4511 | ||
4512 | intel_dp_set_edid(intel_dp); | |
4513 | ||
4514 | intel_dp_power_put(intel_dp, power_domain); | |
4515 | ||
4516 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4517 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4518 | } | |
4519 | ||
4520 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4521 | { | |
4522 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4523 | struct edid *edid; | |
4524 | ||
4525 | edid = intel_connector->detect_edid; | |
4526 | if (edid) { | |
4527 | int ret = intel_connector_update_modes(connector, edid); | |
4528 | if (ret) | |
4529 | return ret; | |
4530 | } | |
32f9d658 | 4531 | |
f8779fda | 4532 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4533 | if (is_edp(intel_attached_dp(connector)) && |
4534 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4535 | struct drm_display_mode *mode; |
beb60608 CW |
4536 | |
4537 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4538 | intel_connector->panel.fixed_mode); |
f8779fda | 4539 | if (mode) { |
32f9d658 ZW |
4540 | drm_mode_probed_add(connector, mode); |
4541 | return 1; | |
4542 | } | |
4543 | } | |
beb60608 | 4544 | |
32f9d658 | 4545 | return 0; |
a4fc5ed6 KP |
4546 | } |
4547 | ||
1aad7ac0 CW |
4548 | static bool |
4549 | intel_dp_detect_audio(struct drm_connector *connector) | |
4550 | { | |
1aad7ac0 | 4551 | bool has_audio = false; |
beb60608 | 4552 | struct edid *edid; |
1aad7ac0 | 4553 | |
beb60608 CW |
4554 | edid = to_intel_connector(connector)->detect_edid; |
4555 | if (edid) | |
1aad7ac0 | 4556 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4557 | |
1aad7ac0 CW |
4558 | return has_audio; |
4559 | } | |
4560 | ||
f684960e CW |
4561 | static int |
4562 | intel_dp_set_property(struct drm_connector *connector, | |
4563 | struct drm_property *property, | |
4564 | uint64_t val) | |
4565 | { | |
e953fd7b | 4566 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4567 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4568 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4569 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4570 | int ret; |
4571 | ||
662595df | 4572 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4573 | if (ret) |
4574 | return ret; | |
4575 | ||
3f43c48d | 4576 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4577 | int i = val; |
4578 | bool has_audio; | |
4579 | ||
4580 | if (i == intel_dp->force_audio) | |
f684960e CW |
4581 | return 0; |
4582 | ||
1aad7ac0 | 4583 | intel_dp->force_audio = i; |
f684960e | 4584 | |
c3e5f67b | 4585 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4586 | has_audio = intel_dp_detect_audio(connector); |
4587 | else | |
c3e5f67b | 4588 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4589 | |
4590 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4591 | return 0; |
4592 | ||
1aad7ac0 | 4593 | intel_dp->has_audio = has_audio; |
f684960e CW |
4594 | goto done; |
4595 | } | |
4596 | ||
e953fd7b | 4597 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4598 | bool old_auto = intel_dp->color_range_auto; |
4599 | uint32_t old_range = intel_dp->color_range; | |
4600 | ||
55bc60db VS |
4601 | switch (val) { |
4602 | case INTEL_BROADCAST_RGB_AUTO: | |
4603 | intel_dp->color_range_auto = true; | |
4604 | break; | |
4605 | case INTEL_BROADCAST_RGB_FULL: | |
4606 | intel_dp->color_range_auto = false; | |
4607 | intel_dp->color_range = 0; | |
4608 | break; | |
4609 | case INTEL_BROADCAST_RGB_LIMITED: | |
4610 | intel_dp->color_range_auto = false; | |
4611 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4612 | break; | |
4613 | default: | |
4614 | return -EINVAL; | |
4615 | } | |
ae4edb80 DV |
4616 | |
4617 | if (old_auto == intel_dp->color_range_auto && | |
4618 | old_range == intel_dp->color_range) | |
4619 | return 0; | |
4620 | ||
e953fd7b CW |
4621 | goto done; |
4622 | } | |
4623 | ||
53b41837 YN |
4624 | if (is_edp(intel_dp) && |
4625 | property == connector->dev->mode_config.scaling_mode_property) { | |
4626 | if (val == DRM_MODE_SCALE_NONE) { | |
4627 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4628 | return -EINVAL; | |
4629 | } | |
4630 | ||
4631 | if (intel_connector->panel.fitting_mode == val) { | |
4632 | /* the eDP scaling property is not changed */ | |
4633 | return 0; | |
4634 | } | |
4635 | intel_connector->panel.fitting_mode = val; | |
4636 | ||
4637 | goto done; | |
4638 | } | |
4639 | ||
f684960e CW |
4640 | return -EINVAL; |
4641 | ||
4642 | done: | |
c0c36b94 CW |
4643 | if (intel_encoder->base.crtc) |
4644 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4645 | |
4646 | return 0; | |
4647 | } | |
4648 | ||
a4fc5ed6 | 4649 | static void |
73845adf | 4650 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4651 | { |
1d508706 | 4652 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4653 | |
10e972d3 | 4654 | kfree(intel_connector->detect_edid); |
beb60608 | 4655 | |
9cd300e0 JN |
4656 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4657 | kfree(intel_connector->edid); | |
4658 | ||
acd8db10 PZ |
4659 | /* Can't call is_edp() since the encoder may have been destroyed |
4660 | * already. */ | |
4661 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4662 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4663 | |
a4fc5ed6 | 4664 | drm_connector_cleanup(connector); |
55f78c43 | 4665 | kfree(connector); |
a4fc5ed6 KP |
4666 | } |
4667 | ||
00c09d70 | 4668 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4669 | { |
da63a9f2 PZ |
4670 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4671 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4672 | |
4f71d0cb | 4673 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4674 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4675 | if (is_edp(intel_dp)) { |
4676 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4677 | /* |
4678 | * vdd might still be enabled do to the delayed vdd off. | |
4679 | * Make sure vdd is actually turned off here. | |
4680 | */ | |
773538e8 | 4681 | pps_lock(intel_dp); |
4be73780 | 4682 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4683 | pps_unlock(intel_dp); |
4684 | ||
01527b31 CT |
4685 | if (intel_dp->edp_notifier.notifier_call) { |
4686 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4687 | intel_dp->edp_notifier.notifier_call = NULL; | |
4688 | } | |
bd943159 | 4689 | } |
c8bd0e49 | 4690 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4691 | kfree(intel_dig_port); |
24d05927 DV |
4692 | } |
4693 | ||
07f9cd0b ID |
4694 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4695 | { | |
4696 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4697 | ||
4698 | if (!is_edp(intel_dp)) | |
4699 | return; | |
4700 | ||
951468f3 VS |
4701 | /* |
4702 | * vdd might still be enabled do to the delayed vdd off. | |
4703 | * Make sure vdd is actually turned off here. | |
4704 | */ | |
afa4e53a | 4705 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4706 | pps_lock(intel_dp); |
07f9cd0b | 4707 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4708 | pps_unlock(intel_dp); |
07f9cd0b ID |
4709 | } |
4710 | ||
49e6bc51 VS |
4711 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4712 | { | |
4713 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4714 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4715 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4716 | enum intel_display_power_domain power_domain; | |
4717 | ||
4718 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4719 | ||
4720 | if (!edp_have_panel_vdd(intel_dp)) | |
4721 | return; | |
4722 | ||
4723 | /* | |
4724 | * The VDD bit needs a power domain reference, so if the bit is | |
4725 | * already enabled when we boot or resume, grab this reference and | |
4726 | * schedule a vdd off, so we don't hold on to the reference | |
4727 | * indefinitely. | |
4728 | */ | |
4729 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4730 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
4731 | intel_display_power_get(dev_priv, power_domain); | |
4732 | ||
4733 | edp_panel_vdd_schedule_off(intel_dp); | |
4734 | } | |
4735 | ||
6d93c0c4 ID |
4736 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4737 | { | |
49e6bc51 VS |
4738 | struct intel_dp *intel_dp; |
4739 | ||
4740 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
4741 | return; | |
4742 | ||
4743 | intel_dp = enc_to_intel_dp(encoder); | |
4744 | ||
4745 | pps_lock(intel_dp); | |
4746 | ||
4747 | /* | |
4748 | * Read out the current power sequencer assignment, | |
4749 | * in case the BIOS did something with it. | |
4750 | */ | |
4751 | if (IS_VALLEYVIEW(encoder->dev)) | |
4752 | vlv_initial_power_sequencer_setup(intel_dp); | |
4753 | ||
4754 | intel_edp_panel_vdd_sanitize(intel_dp); | |
4755 | ||
4756 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4757 | } |
4758 | ||
a4fc5ed6 | 4759 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4760 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4761 | .detect = intel_dp_detect, |
beb60608 | 4762 | .force = intel_dp_force, |
a4fc5ed6 | 4763 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4764 | .set_property = intel_dp_set_property, |
2545e4a6 | 4765 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 4766 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4767 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 4768 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
a4fc5ed6 KP |
4769 | }; |
4770 | ||
4771 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4772 | .get_modes = intel_dp_get_modes, | |
4773 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4774 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4775 | }; |
4776 | ||
a4fc5ed6 | 4777 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4778 | .reset = intel_dp_encoder_reset, |
24d05927 | 4779 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4780 | }; |
4781 | ||
0e32b39c | 4782 | void |
21d40d37 | 4783 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4784 | { |
0e32b39c | 4785 | return; |
c8110e52 | 4786 | } |
6207937d | 4787 | |
b2c5c181 | 4788 | enum irqreturn |
13cf5504 DA |
4789 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4790 | { | |
4791 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4792 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4793 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4794 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 4795 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4796 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4797 | |
0e32b39c DA |
4798 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4799 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4800 | |
7a7f84cc VS |
4801 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4802 | /* | |
4803 | * vdd off can generate a long pulse on eDP which | |
4804 | * would require vdd on to handle it, and thus we | |
4805 | * would end up in an endless cycle of | |
4806 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4807 | */ | |
4808 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4809 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4810 | return IRQ_HANDLED; |
7a7f84cc VS |
4811 | } |
4812 | ||
26fbb774 VS |
4813 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4814 | port_name(intel_dig_port->port), | |
0e32b39c | 4815 | long_hpd ? "long" : "short"); |
13cf5504 | 4816 | |
1c767b33 ID |
4817 | power_domain = intel_display_port_power_domain(intel_encoder); |
4818 | intel_display_power_get(dev_priv, power_domain); | |
4819 | ||
0e32b39c | 4820 | if (long_hpd) { |
2a592bec DA |
4821 | |
4822 | if (HAS_PCH_SPLIT(dev)) { | |
4823 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4824 | goto mst_fail; | |
4825 | } else { | |
4826 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4827 | goto mst_fail; | |
4828 | } | |
0e32b39c DA |
4829 | |
4830 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4831 | goto mst_fail; | |
4832 | } | |
4833 | ||
4834 | intel_dp_probe_oui(intel_dp); | |
4835 | ||
4836 | if (!intel_dp_probe_mst(intel_dp)) | |
4837 | goto mst_fail; | |
4838 | ||
4839 | } else { | |
4840 | if (intel_dp->is_mst) { | |
1c767b33 | 4841 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4842 | goto mst_fail; |
4843 | } | |
4844 | ||
4845 | if (!intel_dp->is_mst) { | |
4846 | /* | |
4847 | * we'll check the link status via the normal hot plug path later - | |
4848 | * but for short hpds we should check it now | |
4849 | */ | |
5b215bcf | 4850 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4851 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4852 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4853 | } |
4854 | } | |
b2c5c181 DV |
4855 | |
4856 | ret = IRQ_HANDLED; | |
4857 | ||
1c767b33 | 4858 | goto put_power; |
0e32b39c DA |
4859 | mst_fail: |
4860 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4861 | if (intel_dp->is_mst) { | |
4862 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4863 | intel_dp->is_mst = false; | |
4864 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4865 | } | |
1c767b33 ID |
4866 | put_power: |
4867 | intel_display_power_put(dev_priv, power_domain); | |
4868 | ||
4869 | return ret; | |
13cf5504 DA |
4870 | } |
4871 | ||
e3421a18 ZW |
4872 | /* Return which DP Port should be selected for Transcoder DP control */ |
4873 | int | |
0206e353 | 4874 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4875 | { |
4876 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4877 | struct intel_encoder *intel_encoder; |
4878 | struct intel_dp *intel_dp; | |
e3421a18 | 4879 | |
fa90ecef PZ |
4880 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4881 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4882 | |
fa90ecef PZ |
4883 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4884 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4885 | return intel_dp->output_reg; |
e3421a18 | 4886 | } |
ea5b213a | 4887 | |
e3421a18 ZW |
4888 | return -1; |
4889 | } | |
4890 | ||
36e83a18 | 4891 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4892 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4893 | { |
4894 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4895 | union child_device_config *p_child; |
36e83a18 | 4896 | int i; |
5d8a7752 VS |
4897 | static const short port_mapping[] = { |
4898 | [PORT_B] = PORT_IDPB, | |
4899 | [PORT_C] = PORT_IDPC, | |
4900 | [PORT_D] = PORT_IDPD, | |
4901 | }; | |
36e83a18 | 4902 | |
3b32a35b VS |
4903 | if (port == PORT_A) |
4904 | return true; | |
4905 | ||
41aa3448 | 4906 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4907 | return false; |
4908 | ||
41aa3448 RV |
4909 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4910 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4911 | |
5d8a7752 | 4912 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4913 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4914 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4915 | return true; |
4916 | } | |
4917 | return false; | |
4918 | } | |
4919 | ||
0e32b39c | 4920 | void |
f684960e CW |
4921 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4922 | { | |
53b41837 YN |
4923 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4924 | ||
3f43c48d | 4925 | intel_attach_force_audio_property(connector); |
e953fd7b | 4926 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4927 | intel_dp->color_range_auto = true; |
53b41837 YN |
4928 | |
4929 | if (is_edp(intel_dp)) { | |
4930 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4931 | drm_object_attach_property( |
4932 | &connector->base, | |
53b41837 | 4933 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4934 | DRM_MODE_SCALE_ASPECT); |
4935 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4936 | } |
f684960e CW |
4937 | } |
4938 | ||
dada1a9f ID |
4939 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4940 | { | |
4941 | intel_dp->last_power_cycle = jiffies; | |
4942 | intel_dp->last_power_on = jiffies; | |
4943 | intel_dp->last_backlight_off = jiffies; | |
4944 | } | |
4945 | ||
67a54566 DV |
4946 | static void |
4947 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 4948 | struct intel_dp *intel_dp) |
67a54566 DV |
4949 | { |
4950 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
4951 | struct edp_power_seq cur, vbt, spec, |
4952 | *final = &intel_dp->pps_delays; | |
67a54566 | 4953 | u32 pp_on, pp_off, pp_div, pp; |
bf13e81b | 4954 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4955 | |
e39b999a VS |
4956 | lockdep_assert_held(&dev_priv->pps_mutex); |
4957 | ||
81ddbc69 VS |
4958 | /* already initialized? */ |
4959 | if (final->t11_t12 != 0) | |
4960 | return; | |
4961 | ||
453c5420 | 4962 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4963 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4964 | pp_on_reg = PCH_PP_ON_DELAYS; |
4965 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4966 | pp_div_reg = PCH_PP_DIVISOR; | |
4967 | } else { | |
bf13e81b JN |
4968 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4969 | ||
4970 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4971 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4972 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4973 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4974 | } |
67a54566 DV |
4975 | |
4976 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4977 | * the very first thing. */ | |
453c5420 | 4978 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4979 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4980 | |
453c5420 JB |
4981 | pp_on = I915_READ(pp_on_reg); |
4982 | pp_off = I915_READ(pp_off_reg); | |
4983 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4984 | |
4985 | /* Pull timing values out of registers */ | |
4986 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4987 | PANEL_POWER_UP_DELAY_SHIFT; | |
4988 | ||
4989 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4990 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4991 | ||
4992 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4993 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4994 | ||
4995 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4996 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4997 | ||
4998 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4999 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
5000 | ||
5001 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5002 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
5003 | ||
41aa3448 | 5004 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
5005 | |
5006 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
5007 | * our hw here, which are all in 100usec. */ | |
5008 | spec.t1_t3 = 210 * 10; | |
5009 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
5010 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
5011 | spec.t10 = 500 * 10; | |
5012 | /* This one is special and actually in units of 100ms, but zero | |
5013 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
5014 | * table multiplies it with 1000 to make it in units of 100usec, | |
5015 | * too. */ | |
5016 | spec.t11_t12 = (510 + 100) * 10; | |
5017 | ||
5018 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5019 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
5020 | ||
5021 | /* Use the max of the register settings and vbt. If both are | |
5022 | * unset, fall back to the spec limits. */ | |
36b5f425 | 5023 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
5024 | spec.field : \ |
5025 | max(cur.field, vbt.field)) | |
5026 | assign_final(t1_t3); | |
5027 | assign_final(t8); | |
5028 | assign_final(t9); | |
5029 | assign_final(t10); | |
5030 | assign_final(t11_t12); | |
5031 | #undef assign_final | |
5032 | ||
36b5f425 | 5033 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
5034 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5035 | intel_dp->backlight_on_delay = get_delay(t8); | |
5036 | intel_dp->backlight_off_delay = get_delay(t9); | |
5037 | intel_dp->panel_power_down_delay = get_delay(t10); | |
5038 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
5039 | #undef get_delay | |
5040 | ||
f30d26e4 JN |
5041 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
5042 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
5043 | intel_dp->panel_power_cycle_delay); | |
5044 | ||
5045 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
5046 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
5047 | } |
5048 | ||
5049 | static void | |
5050 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 5051 | struct intel_dp *intel_dp) |
f30d26e4 JN |
5052 | { |
5053 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
5054 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
5055 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
5056 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 5057 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 5058 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 5059 | |
e39b999a | 5060 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
5061 | |
5062 | if (HAS_PCH_SPLIT(dev)) { | |
5063 | pp_on_reg = PCH_PP_ON_DELAYS; | |
5064 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5065 | pp_div_reg = PCH_PP_DIVISOR; | |
5066 | } else { | |
bf13e81b JN |
5067 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5068 | ||
5069 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5070 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5071 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
5072 | } |
5073 | ||
b2f19d1a PZ |
5074 | /* |
5075 | * And finally store the new values in the power sequencer. The | |
5076 | * backlight delays are set to 1 because we do manual waits on them. For | |
5077 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
5078 | * we'll end up waiting for the backlight off delay twice: once when we | |
5079 | * do the manual sleep, and once when we disable the panel and wait for | |
5080 | * the PP_STATUS bit to become zero. | |
5081 | */ | |
f30d26e4 | 5082 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
5083 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5084 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 5085 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
5086 | /* Compute the divisor for the pp clock, simply match the Bspec |
5087 | * formula. */ | |
453c5420 | 5088 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 5089 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
5090 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
5091 | ||
5092 | /* Haswell doesn't have any port selection bits for the panel | |
5093 | * power sequencer any more. */ | |
bc7d38a4 | 5094 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 5095 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 5096 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 5097 | if (port == PORT_A) |
a24c144c | 5098 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 5099 | else |
a24c144c | 5100 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
5101 | } |
5102 | ||
453c5420 JB |
5103 | pp_on |= port_sel; |
5104 | ||
5105 | I915_WRITE(pp_on_reg, pp_on); | |
5106 | I915_WRITE(pp_off_reg, pp_off); | |
5107 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 5108 | |
67a54566 | 5109 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
5110 | I915_READ(pp_on_reg), |
5111 | I915_READ(pp_off_reg), | |
5112 | I915_READ(pp_div_reg)); | |
f684960e CW |
5113 | } |
5114 | ||
b33a2815 VK |
5115 | /** |
5116 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
5117 | * @dev: DRM device | |
5118 | * @refresh_rate: RR to be programmed | |
5119 | * | |
5120 | * This function gets called when refresh rate (RR) has to be changed from | |
5121 | * one frequency to another. Switches can be between high and low RR | |
5122 | * supported by the panel or to any other RR based on media playback (in | |
5123 | * this case, RR value needs to be passed from user space). | |
5124 | * | |
5125 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
5126 | */ | |
96178eeb | 5127 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
5128 | { |
5129 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5130 | struct intel_encoder *encoder; | |
96178eeb VK |
5131 | struct intel_digital_port *dig_port = NULL; |
5132 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 5133 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 5134 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 5135 | u32 reg, val; |
96178eeb | 5136 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
5137 | |
5138 | if (refresh_rate <= 0) { | |
5139 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
5140 | return; | |
5141 | } | |
5142 | ||
96178eeb VK |
5143 | if (intel_dp == NULL) { |
5144 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
5145 | return; |
5146 | } | |
5147 | ||
1fcc9d1c | 5148 | /* |
e4d59f6b RV |
5149 | * FIXME: This needs proper synchronization with psr state for some |
5150 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 5151 | */ |
439d7ac0 | 5152 | |
96178eeb VK |
5153 | dig_port = dp_to_dig_port(intel_dp); |
5154 | encoder = &dig_port->base; | |
723f9aab | 5155 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
439d7ac0 PB |
5156 | |
5157 | if (!intel_crtc) { | |
5158 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
5159 | return; | |
5160 | } | |
5161 | ||
6e3c9717 | 5162 | config = intel_crtc->config; |
439d7ac0 | 5163 | |
96178eeb | 5164 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
5165 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5166 | return; | |
5167 | } | |
5168 | ||
96178eeb VK |
5169 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5170 | refresh_rate) | |
439d7ac0 PB |
5171 | index = DRRS_LOW_RR; |
5172 | ||
96178eeb | 5173 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
5174 | DRM_DEBUG_KMS( |
5175 | "DRRS requested for previously set RR...ignoring\n"); | |
5176 | return; | |
5177 | } | |
5178 | ||
5179 | if (!intel_crtc->active) { | |
5180 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
5181 | return; | |
5182 | } | |
5183 | ||
44395bfe | 5184 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
5185 | switch (index) { |
5186 | case DRRS_HIGH_RR: | |
5187 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
5188 | break; | |
5189 | case DRRS_LOW_RR: | |
5190 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
5191 | break; | |
5192 | case DRRS_MAX_RR: | |
5193 | default: | |
5194 | DRM_ERROR("Unsupported refreshrate type\n"); | |
5195 | } | |
5196 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 5197 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 5198 | val = I915_READ(reg); |
a4c30b1d | 5199 | |
439d7ac0 | 5200 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
5201 | if (IS_VALLEYVIEW(dev)) |
5202 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5203 | else | |
5204 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 5205 | } else { |
6fa7aec1 VK |
5206 | if (IS_VALLEYVIEW(dev)) |
5207 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5208 | else | |
5209 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5210 | } |
5211 | I915_WRITE(reg, val); | |
5212 | } | |
5213 | ||
4e9ac947 VK |
5214 | dev_priv->drrs.refresh_rate_type = index; |
5215 | ||
5216 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5217 | } | |
5218 | ||
b33a2815 VK |
5219 | /** |
5220 | * intel_edp_drrs_enable - init drrs struct if supported | |
5221 | * @intel_dp: DP struct | |
5222 | * | |
5223 | * Initializes frontbuffer_bits and drrs.dp | |
5224 | */ | |
c395578e VK |
5225 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5226 | { | |
5227 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5228 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5229 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5230 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5231 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5232 | ||
5233 | if (!intel_crtc->config->has_drrs) { | |
5234 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5235 | return; | |
5236 | } | |
5237 | ||
5238 | mutex_lock(&dev_priv->drrs.mutex); | |
5239 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5240 | DRM_ERROR("DRRS already enabled\n"); | |
5241 | goto unlock; | |
5242 | } | |
5243 | ||
5244 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5245 | ||
5246 | dev_priv->drrs.dp = intel_dp; | |
5247 | ||
5248 | unlock: | |
5249 | mutex_unlock(&dev_priv->drrs.mutex); | |
5250 | } | |
5251 | ||
b33a2815 VK |
5252 | /** |
5253 | * intel_edp_drrs_disable - Disable DRRS | |
5254 | * @intel_dp: DP struct | |
5255 | * | |
5256 | */ | |
c395578e VK |
5257 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5258 | { | |
5259 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5260 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5261 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5262 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5263 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5264 | ||
5265 | if (!intel_crtc->config->has_drrs) | |
5266 | return; | |
5267 | ||
5268 | mutex_lock(&dev_priv->drrs.mutex); | |
5269 | if (!dev_priv->drrs.dp) { | |
5270 | mutex_unlock(&dev_priv->drrs.mutex); | |
5271 | return; | |
5272 | } | |
5273 | ||
5274 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5275 | intel_dp_set_drrs_state(dev_priv->dev, | |
5276 | intel_dp->attached_connector->panel. | |
5277 | fixed_mode->vrefresh); | |
5278 | ||
5279 | dev_priv->drrs.dp = NULL; | |
5280 | mutex_unlock(&dev_priv->drrs.mutex); | |
5281 | ||
5282 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5283 | } | |
5284 | ||
4e9ac947 VK |
5285 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5286 | { | |
5287 | struct drm_i915_private *dev_priv = | |
5288 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5289 | struct intel_dp *intel_dp; | |
5290 | ||
5291 | mutex_lock(&dev_priv->drrs.mutex); | |
5292 | ||
5293 | intel_dp = dev_priv->drrs.dp; | |
5294 | ||
5295 | if (!intel_dp) | |
5296 | goto unlock; | |
5297 | ||
439d7ac0 | 5298 | /* |
4e9ac947 VK |
5299 | * The delayed work can race with an invalidate hence we need to |
5300 | * recheck. | |
439d7ac0 PB |
5301 | */ |
5302 | ||
4e9ac947 VK |
5303 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5304 | goto unlock; | |
439d7ac0 | 5305 | |
4e9ac947 VK |
5306 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5307 | intel_dp_set_drrs_state(dev_priv->dev, | |
5308 | intel_dp->attached_connector->panel. | |
5309 | downclock_mode->vrefresh); | |
439d7ac0 | 5310 | |
4e9ac947 | 5311 | unlock: |
439d7ac0 | 5312 | |
4e9ac947 | 5313 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5314 | } |
5315 | ||
b33a2815 VK |
5316 | /** |
5317 | * intel_edp_drrs_invalidate - Invalidate DRRS | |
5318 | * @dev: DRM device | |
5319 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5320 | * | |
5321 | * When there is a disturbance on screen (due to cursor movement/time | |
5322 | * update etc), DRRS needs to be invalidated, i.e. need to switch to | |
5323 | * high RR. | |
5324 | * | |
5325 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5326 | */ | |
a93fad0f VK |
5327 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5328 | unsigned frontbuffer_bits) | |
5329 | { | |
5330 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5331 | struct drm_crtc *crtc; | |
5332 | enum pipe pipe; | |
5333 | ||
5334 | if (!dev_priv->drrs.dp) | |
5335 | return; | |
5336 | ||
3954e733 R |
5337 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5338 | ||
a93fad0f VK |
5339 | mutex_lock(&dev_priv->drrs.mutex); |
5340 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5341 | pipe = to_intel_crtc(crtc)->pipe; | |
5342 | ||
5343 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) { | |
a93fad0f VK |
5344 | intel_dp_set_drrs_state(dev_priv->dev, |
5345 | dev_priv->drrs.dp->attached_connector->panel. | |
5346 | fixed_mode->vrefresh); | |
5347 | } | |
5348 | ||
5349 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
5350 | ||
5351 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5352 | mutex_unlock(&dev_priv->drrs.mutex); | |
5353 | } | |
5354 | ||
b33a2815 VK |
5355 | /** |
5356 | * intel_edp_drrs_flush - Flush DRRS | |
5357 | * @dev: DRM device | |
5358 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5359 | * | |
5360 | * When there is no movement on screen, DRRS work can be scheduled. | |
5361 | * This DRRS work is responsible for setting relevant registers after a | |
5362 | * timeout of 1 second. | |
5363 | * | |
5364 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5365 | */ | |
a93fad0f VK |
5366 | void intel_edp_drrs_flush(struct drm_device *dev, |
5367 | unsigned frontbuffer_bits) | |
5368 | { | |
5369 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5370 | struct drm_crtc *crtc; | |
5371 | enum pipe pipe; | |
5372 | ||
5373 | if (!dev_priv->drrs.dp) | |
5374 | return; | |
5375 | ||
3954e733 R |
5376 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5377 | ||
a93fad0f VK |
5378 | mutex_lock(&dev_priv->drrs.mutex); |
5379 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5380 | pipe = to_intel_crtc(crtc)->pipe; | |
5381 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
5382 | ||
a93fad0f VK |
5383 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR && |
5384 | !dev_priv->drrs.busy_frontbuffer_bits) | |
5385 | schedule_delayed_work(&dev_priv->drrs.work, | |
5386 | msecs_to_jiffies(1000)); | |
5387 | mutex_unlock(&dev_priv->drrs.mutex); | |
5388 | } | |
5389 | ||
b33a2815 VK |
5390 | /** |
5391 | * DOC: Display Refresh Rate Switching (DRRS) | |
5392 | * | |
5393 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5394 | * which enables swtching between low and high refresh rates, | |
5395 | * dynamically, based on the usage scenario. This feature is applicable | |
5396 | * for internal panels. | |
5397 | * | |
5398 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5399 | * would list multiple refresh rates for one resolution. | |
5400 | * | |
5401 | * DRRS is of 2 types - static and seamless. | |
5402 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5403 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5404 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5405 | * and can be used during normal system usage. This is done by programming | |
5406 | * certain registers. | |
5407 | * | |
5408 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5409 | * inputs from the panel spec. | |
5410 | * | |
5411 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5412 | * | |
5413 | * eDP DRRS:- | |
5414 | * The implementation is based on frontbuffer tracking implementation. | |
5415 | * When there is a disturbance on the screen triggered by user activity or a | |
5416 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5417 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5418 | * to low RR is made. | |
5419 | * For integration with frontbuffer tracking code, | |
5420 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5421 | * | |
5422 | * DRRS can be further extended to support other internal panels and also | |
5423 | * the scenario of video playback wherein RR is set based on the rate | |
5424 | * requested by userspace. | |
5425 | */ | |
5426 | ||
5427 | /** | |
5428 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5429 | * @intel_connector: eDP connector | |
5430 | * @fixed_mode: preferred mode of panel | |
5431 | * | |
5432 | * This function is called only once at driver load to initialize basic | |
5433 | * DRRS stuff. | |
5434 | * | |
5435 | * Returns: | |
5436 | * Downclock mode if panel supports it, else return NULL. | |
5437 | * DRRS support is determined by the presence of downclock mode (apart | |
5438 | * from VBT setting). | |
5439 | */ | |
4f9db5b5 | 5440 | static struct drm_display_mode * |
96178eeb VK |
5441 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5442 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5443 | { |
5444 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5445 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5446 | struct drm_i915_private *dev_priv = dev->dev_private; |
5447 | struct drm_display_mode *downclock_mode = NULL; | |
5448 | ||
5449 | if (INTEL_INFO(dev)->gen <= 6) { | |
5450 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5451 | return NULL; | |
5452 | } | |
5453 | ||
5454 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5455 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5456 | return NULL; |
5457 | } | |
5458 | ||
5459 | downclock_mode = intel_find_panel_downclock | |
5460 | (dev, fixed_mode, connector); | |
5461 | ||
5462 | if (!downclock_mode) { | |
a1d26342 | 5463 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5464 | return NULL; |
5465 | } | |
5466 | ||
4e9ac947 VK |
5467 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5468 | ||
96178eeb | 5469 | mutex_init(&dev_priv->drrs.mutex); |
439d7ac0 | 5470 | |
96178eeb | 5471 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5472 | |
96178eeb | 5473 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5474 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5475 | return downclock_mode; |
5476 | } | |
5477 | ||
ed92f0b2 | 5478 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5479 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5480 | { |
5481 | struct drm_connector *connector = &intel_connector->base; | |
5482 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5483 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5484 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5485 | struct drm_i915_private *dev_priv = dev->dev_private; |
5486 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5487 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5488 | bool has_dpcd; |
5489 | struct drm_display_mode *scan; | |
5490 | struct edid *edid; | |
6517d273 | 5491 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 PZ |
5492 | |
5493 | if (!is_edp(intel_dp)) | |
5494 | return true; | |
5495 | ||
49e6bc51 VS |
5496 | pps_lock(intel_dp); |
5497 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5498 | pps_unlock(intel_dp); | |
63635217 | 5499 | |
ed92f0b2 | 5500 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5501 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5502 | |
5503 | if (has_dpcd) { | |
5504 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5505 | dev_priv->no_aux_handshake = | |
5506 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5507 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5508 | } else { | |
5509 | /* if this fails, presume the device is a ghost */ | |
5510 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5511 | return false; |
5512 | } | |
5513 | ||
5514 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5515 | pps_lock(intel_dp); |
36b5f425 | 5516 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5517 | pps_unlock(intel_dp); |
ed92f0b2 | 5518 | |
060c8778 | 5519 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5520 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5521 | if (edid) { |
5522 | if (drm_add_edid_modes(connector, edid)) { | |
5523 | drm_mode_connector_update_edid_property(connector, | |
5524 | edid); | |
5525 | drm_edid_to_eld(connector, edid); | |
5526 | } else { | |
5527 | kfree(edid); | |
5528 | edid = ERR_PTR(-EINVAL); | |
5529 | } | |
5530 | } else { | |
5531 | edid = ERR_PTR(-ENOENT); | |
5532 | } | |
5533 | intel_connector->edid = edid; | |
5534 | ||
5535 | /* prefer fixed mode from EDID if available */ | |
5536 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5537 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5538 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5539 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5540 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5541 | break; |
5542 | } | |
5543 | } | |
5544 | ||
5545 | /* fallback to VBT if available for eDP */ | |
5546 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5547 | fixed_mode = drm_mode_duplicate(dev, | |
5548 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5549 | if (fixed_mode) | |
5550 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5551 | } | |
060c8778 | 5552 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5553 | |
01527b31 CT |
5554 | if (IS_VALLEYVIEW(dev)) { |
5555 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5556 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5557 | |
5558 | /* | |
5559 | * Figure out the current pipe for the initial backlight setup. | |
5560 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5561 | * fails just assume pipe A. | |
5562 | */ | |
5563 | if (IS_CHERRYVIEW(dev)) | |
5564 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5565 | else | |
5566 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5567 | ||
5568 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5569 | pipe = intel_dp->pps_pipe; | |
5570 | ||
5571 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5572 | pipe = PIPE_A; | |
5573 | ||
5574 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5575 | pipe_name(pipe)); | |
01527b31 CT |
5576 | } |
5577 | ||
4f9db5b5 | 5578 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5579 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
6517d273 | 5580 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5581 | |
5582 | return true; | |
5583 | } | |
5584 | ||
16c25533 | 5585 | bool |
f0fec3f2 PZ |
5586 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5587 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5588 | { |
f0fec3f2 PZ |
5589 | struct drm_connector *connector = &intel_connector->base; |
5590 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5591 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5592 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5593 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5594 | enum port port = intel_dig_port->port; |
0b99836f | 5595 | int type; |
a4fc5ed6 | 5596 | |
a4a5d2f8 VS |
5597 | intel_dp->pps_pipe = INVALID_PIPE; |
5598 | ||
ec5b01dd | 5599 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5600 | if (INTEL_INFO(dev)->gen >= 9) |
5601 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5602 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5603 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5604 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5605 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5606 | else if (HAS_PCH_SPLIT(dev)) | |
5607 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5608 | else | |
5609 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5610 | ||
b9ca5fad DL |
5611 | if (INTEL_INFO(dev)->gen >= 9) |
5612 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5613 | else | |
5614 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5615 | |
0767935e DV |
5616 | /* Preserve the current hw state. */ |
5617 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5618 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5619 | |
3b32a35b | 5620 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5621 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5622 | else |
5623 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5624 | |
f7d24902 ID |
5625 | /* |
5626 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5627 | * for DP the encoder type can be set by the caller to | |
5628 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5629 | */ | |
5630 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5631 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5632 | ||
c17ed5b5 VS |
5633 | /* eDP only on port B and/or C on vlv/chv */ |
5634 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5635 | port != PORT_B && port != PORT_C)) | |
5636 | return false; | |
5637 | ||
e7281eab ID |
5638 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5639 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5640 | port_name(port)); | |
5641 | ||
b329530c | 5642 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5643 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5644 | ||
a4fc5ed6 KP |
5645 | connector->interlace_allowed = true; |
5646 | connector->doublescan_allowed = 0; | |
5647 | ||
f0fec3f2 | 5648 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5649 | edp_panel_vdd_work); |
a4fc5ed6 | 5650 | |
df0e9248 | 5651 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5652 | drm_connector_register(connector); |
a4fc5ed6 | 5653 | |
affa9354 | 5654 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5655 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5656 | else | |
5657 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5658 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5659 | |
0b99836f | 5660 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5661 | switch (port) { |
5662 | case PORT_A: | |
1d843f9d | 5663 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5664 | break; |
5665 | case PORT_B: | |
1d843f9d | 5666 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5667 | break; |
5668 | case PORT_C: | |
1d843f9d | 5669 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5670 | break; |
5671 | case PORT_D: | |
1d843f9d | 5672 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5673 | break; |
5674 | default: | |
ad1c0b19 | 5675 | BUG(); |
5eb08b69 ZW |
5676 | } |
5677 | ||
dada1a9f | 5678 | if (is_edp(intel_dp)) { |
773538e8 | 5679 | pps_lock(intel_dp); |
1e74a324 VS |
5680 | intel_dp_init_panel_power_timestamps(intel_dp); |
5681 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 5682 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 5683 | else |
36b5f425 | 5684 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 5685 | pps_unlock(intel_dp); |
dada1a9f | 5686 | } |
0095e6dc | 5687 | |
9d1a1031 | 5688 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5689 | |
0e32b39c | 5690 | /* init MST on ports that can support it */ |
c86ea3d0 | 5691 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
0e32b39c | 5692 | if (port == PORT_B || port == PORT_C || port == PORT_D) { |
a4a5d2f8 VS |
5693 | intel_dp_mst_encoder_init(intel_dig_port, |
5694 | intel_connector->base.base.id); | |
0e32b39c DA |
5695 | } |
5696 | } | |
5697 | ||
36b5f425 | 5698 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 5699 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5700 | if (is_edp(intel_dp)) { |
5701 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5702 | /* |
5703 | * vdd might still be enabled do to the delayed vdd off. | |
5704 | * Make sure vdd is actually turned off here. | |
5705 | */ | |
773538e8 | 5706 | pps_lock(intel_dp); |
4be73780 | 5707 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5708 | pps_unlock(intel_dp); |
15b1d171 | 5709 | } |
34ea3d38 | 5710 | drm_connector_unregister(connector); |
b2f246a8 | 5711 | drm_connector_cleanup(connector); |
16c25533 | 5712 | return false; |
b2f246a8 | 5713 | } |
32f9d658 | 5714 | |
f684960e CW |
5715 | intel_dp_add_properties(intel_dp, connector); |
5716 | ||
a4fc5ed6 KP |
5717 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5718 | * 0xd. Failure to do so will result in spurious interrupts being | |
5719 | * generated on the port when a cable is not attached. | |
5720 | */ | |
5721 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5722 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5723 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5724 | } | |
16c25533 | 5725 | |
aa7471d2 JN |
5726 | i915_debugfs_connector_add(connector); |
5727 | ||
16c25533 | 5728 | return true; |
a4fc5ed6 | 5729 | } |
f0fec3f2 PZ |
5730 | |
5731 | void | |
5732 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5733 | { | |
13cf5504 | 5734 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5735 | struct intel_digital_port *intel_dig_port; |
5736 | struct intel_encoder *intel_encoder; | |
5737 | struct drm_encoder *encoder; | |
5738 | struct intel_connector *intel_connector; | |
5739 | ||
b14c5679 | 5740 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5741 | if (!intel_dig_port) |
5742 | return; | |
5743 | ||
9bdbd0b9 | 5744 | intel_connector = intel_connector_alloc(); |
f0fec3f2 PZ |
5745 | if (!intel_connector) { |
5746 | kfree(intel_dig_port); | |
5747 | return; | |
5748 | } | |
5749 | ||
5750 | intel_encoder = &intel_dig_port->base; | |
5751 | encoder = &intel_encoder->base; | |
5752 | ||
5753 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5754 | DRM_MODE_ENCODER_TMDS); | |
5755 | ||
5bfe2ac0 | 5756 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5757 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5758 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5759 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5760 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5761 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5762 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5763 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5764 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5765 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5766 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5767 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5768 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5769 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5770 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5771 | } else { |
ecff4f3b JN |
5772 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5773 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5774 | if (INTEL_INFO(dev)->gen >= 5) |
5775 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5776 | } |
f0fec3f2 | 5777 | |
174edf1f | 5778 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5779 | intel_dig_port->dp.output_reg = output_reg; |
5780 | ||
00c09d70 | 5781 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5782 | if (IS_CHERRYVIEW(dev)) { |
5783 | if (port == PORT_D) | |
5784 | intel_encoder->crtc_mask = 1 << 2; | |
5785 | else | |
5786 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5787 | } else { | |
5788 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5789 | } | |
bc079e8b | 5790 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5791 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5792 | ||
13cf5504 DA |
5793 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5794 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5795 | ||
15b1d171 PZ |
5796 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5797 | drm_encoder_cleanup(encoder); | |
5798 | kfree(intel_dig_port); | |
b2f246a8 | 5799 | kfree(intel_connector); |
15b1d171 | 5800 | } |
f0fec3f2 | 5801 | } |
0e32b39c DA |
5802 | |
5803 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5804 | { | |
5805 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5806 | int i; | |
5807 | ||
5808 | /* disable MST */ | |
5809 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5810 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5811 | if (!intel_dig_port) | |
5812 | continue; | |
5813 | ||
5814 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5815 | if (!intel_dig_port->dp.can_mst) | |
5816 | continue; | |
5817 | if (intel_dig_port->dp.is_mst) | |
5818 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5819 | } | |
5820 | } | |
5821 | } | |
5822 | ||
5823 | void intel_dp_mst_resume(struct drm_device *dev) | |
5824 | { | |
5825 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5826 | int i; | |
5827 | ||
5828 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5829 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5830 | if (!intel_dig_port) | |
5831 | continue; | |
5832 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5833 | int ret; | |
5834 | ||
5835 | if (!intel_dig_port->dp.can_mst) | |
5836 | continue; | |
5837 | ||
5838 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5839 | if (ret != 0) { | |
5840 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5841 | } | |
5842 | } | |
5843 | } | |
5844 | } |