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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 | ||
559be30c TP |
44 | /* Compliance test status bits */ |
45 | #define INTEL_DP_RESOLUTION_SHIFT_MASK 0 | |
46 | #define INTEL_DP_RESOLUTION_PREFERRED (1 << INTEL_DP_RESOLUTION_SHIFT_MASK) | |
47 | #define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK) | |
48 | #define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK) | |
49 | ||
9dd4ffdf CML |
50 | struct dp_link_dpll { |
51 | int link_bw; | |
52 | struct dpll dpll; | |
53 | }; | |
54 | ||
55 | static const struct dp_link_dpll gen4_dpll[] = { | |
56 | { DP_LINK_BW_1_62, | |
57 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
58 | { DP_LINK_BW_2_7, | |
59 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
60 | }; | |
61 | ||
62 | static const struct dp_link_dpll pch_dpll[] = { | |
63 | { DP_LINK_BW_1_62, | |
64 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
65 | { DP_LINK_BW_2_7, | |
66 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
67 | }; | |
68 | ||
65ce4bf5 CML |
69 | static const struct dp_link_dpll vlv_dpll[] = { |
70 | { DP_LINK_BW_1_62, | |
58f6e632 | 71 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
72 | { DP_LINK_BW_2_7, |
73 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
74 | }; | |
75 | ||
ef9348c8 CML |
76 | /* |
77 | * CHV supports eDP 1.4 that have more link rates. | |
78 | * Below only provides the fixed rate but exclude variable rate. | |
79 | */ | |
80 | static const struct dp_link_dpll chv_dpll[] = { | |
81 | /* | |
82 | * CHV requires to program fractional division for m2. | |
83 | * m2 is stored in fixed point format using formula below | |
84 | * (m2_int << 22) | m2_fraction | |
85 | */ | |
86 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
87 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
88 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
89 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
90 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
91 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
92 | }; | |
637a9c63 SJ |
93 | |
94 | static const int skl_rates[] = { 162000, 216000, 270000, | |
f4896f15 | 95 | 324000, 432000, 540000 }; |
fe51bfb9 VS |
96 | static const int chv_rates[] = { 162000, 202500, 210000, 216000, |
97 | 243000, 270000, 324000, 405000, | |
98 | 420000, 432000, 540000 }; | |
f4896f15 | 99 | static const int default_rates[] = { 162000, 270000, 540000 }; |
ef9348c8 | 100 | |
cfcb0fc9 JB |
101 | /** |
102 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
103 | * @intel_dp: DP struct | |
104 | * | |
105 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
106 | * will return true, and false otherwise. | |
107 | */ | |
108 | static bool is_edp(struct intel_dp *intel_dp) | |
109 | { | |
da63a9f2 PZ |
110 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
111 | ||
112 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
113 | } |
114 | ||
68b4d824 | 115 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 116 | { |
68b4d824 ID |
117 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
118 | ||
119 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
120 | } |
121 | ||
df0e9248 CW |
122 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
123 | { | |
fa90ecef | 124 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
125 | } |
126 | ||
ea5b213a | 127 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 128 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 129 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
093e3f13 | 130 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a8c3344e VS |
131 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
132 | enum pipe pipe); | |
a4fc5ed6 | 133 | |
ed4e9c1d VS |
134 | static int |
135 | intel_dp_max_link_bw(struct intel_dp *intel_dp) | |
a4fc5ed6 | 136 | { |
7183dc29 | 137 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
138 | |
139 | switch (max_link_bw) { | |
140 | case DP_LINK_BW_1_62: | |
141 | case DP_LINK_BW_2_7: | |
1db10e28 | 142 | case DP_LINK_BW_5_4: |
d4eead50 | 143 | break; |
a4fc5ed6 | 144 | default: |
d4eead50 ID |
145 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
146 | max_link_bw); | |
a4fc5ed6 KP |
147 | max_link_bw = DP_LINK_BW_1_62; |
148 | break; | |
149 | } | |
150 | return max_link_bw; | |
151 | } | |
152 | ||
eeb6324d PZ |
153 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
154 | { | |
155 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
156 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
157 | u8 source_max, sink_max; | |
158 | ||
159 | source_max = 4; | |
160 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
161 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
162 | source_max = 2; | |
163 | ||
164 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
165 | ||
166 | return min(source_max, sink_max); | |
167 | } | |
168 | ||
cd9dde44 AJ |
169 | /* |
170 | * The units on the numbers in the next two are... bizarre. Examples will | |
171 | * make it clearer; this one parallels an example in the eDP spec. | |
172 | * | |
173 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
174 | * | |
175 | * 270000 * 1 * 8 / 10 == 216000 | |
176 | * | |
177 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
178 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
179 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
180 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
181 | * | |
182 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
183 | * get the result in decakilobits instead of kilobits. | |
184 | */ | |
185 | ||
a4fc5ed6 | 186 | static int |
c898261c | 187 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 188 | { |
cd9dde44 | 189 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
190 | } |
191 | ||
fe27d53e DA |
192 | static int |
193 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
194 | { | |
195 | return (max_link_clock * max_lanes * 8) / 10; | |
196 | } | |
197 | ||
c19de8eb | 198 | static enum drm_mode_status |
a4fc5ed6 KP |
199 | intel_dp_mode_valid(struct drm_connector *connector, |
200 | struct drm_display_mode *mode) | |
201 | { | |
df0e9248 | 202 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
203 | struct intel_connector *intel_connector = to_intel_connector(connector); |
204 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
205 | int target_clock = mode->clock; |
206 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 207 | |
dd06f90e JN |
208 | if (is_edp(intel_dp) && fixed_mode) { |
209 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
210 | return MODE_PANEL; |
211 | ||
dd06f90e | 212 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 213 | return MODE_PANEL; |
03afc4a2 DV |
214 | |
215 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
216 | } |
217 | ||
50fec21a | 218 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 219 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
220 | |
221 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
222 | mode_rate = intel_dp_link_required(target_clock, 18); | |
223 | ||
224 | if (mode_rate > max_rate) | |
c4867936 | 225 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
226 | |
227 | if (mode->clock < 10000) | |
228 | return MODE_CLOCK_LOW; | |
229 | ||
0af78a2b DV |
230 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
231 | return MODE_H_ILLEGAL; | |
232 | ||
a4fc5ed6 KP |
233 | return MODE_OK; |
234 | } | |
235 | ||
a4f1289e | 236 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
237 | { |
238 | int i; | |
239 | uint32_t v = 0; | |
240 | ||
241 | if (src_bytes > 4) | |
242 | src_bytes = 4; | |
243 | for (i = 0; i < src_bytes; i++) | |
244 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
245 | return v; | |
246 | } | |
247 | ||
c2af70e2 | 248 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
249 | { |
250 | int i; | |
251 | if (dst_bytes > 4) | |
252 | dst_bytes = 4; | |
253 | for (i = 0; i < dst_bytes; i++) | |
254 | dst[i] = src >> ((3-i) * 8); | |
255 | } | |
256 | ||
fb0f8fbf KP |
257 | /* hrawclock is 1/4 the FSB frequency */ |
258 | static int | |
259 | intel_hrawclk(struct drm_device *dev) | |
260 | { | |
261 | struct drm_i915_private *dev_priv = dev->dev_private; | |
262 | uint32_t clkcfg; | |
263 | ||
9473c8f4 VP |
264 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
265 | if (IS_VALLEYVIEW(dev)) | |
266 | return 200; | |
267 | ||
fb0f8fbf KP |
268 | clkcfg = I915_READ(CLKCFG); |
269 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
270 | case CLKCFG_FSB_400: | |
271 | return 100; | |
272 | case CLKCFG_FSB_533: | |
273 | return 133; | |
274 | case CLKCFG_FSB_667: | |
275 | return 166; | |
276 | case CLKCFG_FSB_800: | |
277 | return 200; | |
278 | case CLKCFG_FSB_1067: | |
279 | return 266; | |
280 | case CLKCFG_FSB_1333: | |
281 | return 333; | |
282 | /* these two are just a guess; one of them might be right */ | |
283 | case CLKCFG_FSB_1600: | |
284 | case CLKCFG_FSB_1600_ALT: | |
285 | return 400; | |
286 | default: | |
287 | return 133; | |
288 | } | |
289 | } | |
290 | ||
bf13e81b JN |
291 | static void |
292 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 293 | struct intel_dp *intel_dp); |
bf13e81b JN |
294 | static void |
295 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 296 | struct intel_dp *intel_dp); |
bf13e81b | 297 | |
773538e8 VS |
298 | static void pps_lock(struct intel_dp *intel_dp) |
299 | { | |
300 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
301 | struct intel_encoder *encoder = &intel_dig_port->base; | |
302 | struct drm_device *dev = encoder->base.dev; | |
303 | struct drm_i915_private *dev_priv = dev->dev_private; | |
304 | enum intel_display_power_domain power_domain; | |
305 | ||
306 | /* | |
307 | * See vlv_power_sequencer_reset() why we need | |
308 | * a power domain reference here. | |
309 | */ | |
310 | power_domain = intel_display_port_power_domain(encoder); | |
311 | intel_display_power_get(dev_priv, power_domain); | |
312 | ||
313 | mutex_lock(&dev_priv->pps_mutex); | |
314 | } | |
315 | ||
316 | static void pps_unlock(struct intel_dp *intel_dp) | |
317 | { | |
318 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
319 | struct intel_encoder *encoder = &intel_dig_port->base; | |
320 | struct drm_device *dev = encoder->base.dev; | |
321 | struct drm_i915_private *dev_priv = dev->dev_private; | |
322 | enum intel_display_power_domain power_domain; | |
323 | ||
324 | mutex_unlock(&dev_priv->pps_mutex); | |
325 | ||
326 | power_domain = intel_display_port_power_domain(encoder); | |
327 | intel_display_power_put(dev_priv, power_domain); | |
328 | } | |
329 | ||
961a0db0 VS |
330 | static void |
331 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
332 | { | |
333 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
334 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
335 | struct drm_i915_private *dev_priv = dev->dev_private; | |
336 | enum pipe pipe = intel_dp->pps_pipe; | |
d288f65f | 337 | bool pll_enabled; |
961a0db0 VS |
338 | uint32_t DP; |
339 | ||
340 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
341 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
342 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
343 | return; | |
344 | ||
345 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
346 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
347 | ||
348 | /* Preserve the BIOS-computed detected bit. This is | |
349 | * supposed to be read-only. | |
350 | */ | |
351 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
352 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
353 | DP |= DP_PORT_WIDTH(1); | |
354 | DP |= DP_LINK_TRAIN_PAT_1; | |
355 | ||
356 | if (IS_CHERRYVIEW(dev)) | |
357 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
358 | else if (pipe == PIPE_B) | |
359 | DP |= DP_PIPEB_SELECT; | |
360 | ||
d288f65f VS |
361 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
362 | ||
363 | /* | |
364 | * The DPLL for the pipe must be enabled for this to work. | |
365 | * So enable temporarily it if it's not already enabled. | |
366 | */ | |
367 | if (!pll_enabled) | |
368 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? | |
369 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); | |
370 | ||
961a0db0 VS |
371 | /* |
372 | * Similar magic as in intel_dp_enable_port(). | |
373 | * We _must_ do this port enable + disable trick | |
374 | * to make this power seqeuencer lock onto the port. | |
375 | * Otherwise even VDD force bit won't work. | |
376 | */ | |
377 | I915_WRITE(intel_dp->output_reg, DP); | |
378 | POSTING_READ(intel_dp->output_reg); | |
379 | ||
380 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
381 | POSTING_READ(intel_dp->output_reg); | |
382 | ||
383 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
384 | POSTING_READ(intel_dp->output_reg); | |
d288f65f VS |
385 | |
386 | if (!pll_enabled) | |
387 | vlv_force_pll_off(dev, pipe); | |
961a0db0 VS |
388 | } |
389 | ||
bf13e81b JN |
390 | static enum pipe |
391 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
392 | { | |
393 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
394 | struct drm_device *dev = intel_dig_port->base.base.dev; |
395 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
396 | struct intel_encoder *encoder; |
397 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 398 | enum pipe pipe; |
bf13e81b | 399 | |
e39b999a | 400 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 401 | |
a8c3344e VS |
402 | /* We should never land here with regular DP ports */ |
403 | WARN_ON(!is_edp(intel_dp)); | |
404 | ||
a4a5d2f8 VS |
405 | if (intel_dp->pps_pipe != INVALID_PIPE) |
406 | return intel_dp->pps_pipe; | |
407 | ||
408 | /* | |
409 | * We don't have power sequencer currently. | |
410 | * Pick one that's not used by other ports. | |
411 | */ | |
412 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
413 | base.head) { | |
414 | struct intel_dp *tmp; | |
415 | ||
416 | if (encoder->type != INTEL_OUTPUT_EDP) | |
417 | continue; | |
418 | ||
419 | tmp = enc_to_intel_dp(&encoder->base); | |
420 | ||
421 | if (tmp->pps_pipe != INVALID_PIPE) | |
422 | pipes &= ~(1 << tmp->pps_pipe); | |
423 | } | |
424 | ||
425 | /* | |
426 | * Didn't find one. This should not happen since there | |
427 | * are two power sequencers and up to two eDP ports. | |
428 | */ | |
429 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
430 | pipe = PIPE_A; |
431 | else | |
432 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 433 | |
a8c3344e VS |
434 | vlv_steal_power_sequencer(dev, pipe); |
435 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
436 | |
437 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
438 | pipe_name(intel_dp->pps_pipe), | |
439 | port_name(intel_dig_port->port)); | |
440 | ||
441 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
442 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
443 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 444 | |
961a0db0 VS |
445 | /* |
446 | * Even vdd force doesn't work until we've made | |
447 | * the power sequencer lock in on the port. | |
448 | */ | |
449 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
450 | |
451 | return intel_dp->pps_pipe; | |
452 | } | |
453 | ||
6491ab27 VS |
454 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
455 | enum pipe pipe); | |
456 | ||
457 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
458 | enum pipe pipe) | |
459 | { | |
460 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
461 | } | |
462 | ||
463 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
464 | enum pipe pipe) | |
465 | { | |
466 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
467 | } | |
468 | ||
469 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
470 | enum pipe pipe) | |
471 | { | |
472 | return true; | |
473 | } | |
bf13e81b | 474 | |
a4a5d2f8 | 475 | static enum pipe |
6491ab27 VS |
476 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
477 | enum port port, | |
478 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
479 | { |
480 | enum pipe pipe; | |
bf13e81b | 481 | |
bf13e81b JN |
482 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
483 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
484 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
485 | |
486 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
487 | continue; | |
488 | ||
6491ab27 VS |
489 | if (!pipe_check(dev_priv, pipe)) |
490 | continue; | |
491 | ||
a4a5d2f8 | 492 | return pipe; |
bf13e81b JN |
493 | } |
494 | ||
a4a5d2f8 VS |
495 | return INVALID_PIPE; |
496 | } | |
497 | ||
498 | static void | |
499 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
500 | { | |
501 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
502 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
503 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
504 | enum port port = intel_dig_port->port; |
505 | ||
506 | lockdep_assert_held(&dev_priv->pps_mutex); | |
507 | ||
508 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
509 | /* first pick one where the panel is on */ |
510 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
511 | vlv_pipe_has_pp_on); | |
512 | /* didn't find one? pick one where vdd is on */ | |
513 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
514 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
515 | vlv_pipe_has_vdd_on); | |
516 | /* didn't find one? pick one with just the correct port */ | |
517 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
518 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
519 | vlv_pipe_any); | |
a4a5d2f8 VS |
520 | |
521 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
522 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
523 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
524 | port_name(port)); | |
525 | return; | |
bf13e81b JN |
526 | } |
527 | ||
a4a5d2f8 VS |
528 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
529 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
530 | ||
36b5f425 VS |
531 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
532 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
533 | } |
534 | ||
773538e8 VS |
535 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
536 | { | |
537 | struct drm_device *dev = dev_priv->dev; | |
538 | struct intel_encoder *encoder; | |
539 | ||
540 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
541 | return; | |
542 | ||
543 | /* | |
544 | * We can't grab pps_mutex here due to deadlock with power_domain | |
545 | * mutex when power_domain functions are called while holding pps_mutex. | |
546 | * That also means that in order to use pps_pipe the code needs to | |
547 | * hold both a power domain reference and pps_mutex, and the power domain | |
548 | * reference get/put must be done while _not_ holding pps_mutex. | |
549 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
550 | * should use them always. | |
551 | */ | |
552 | ||
553 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
554 | struct intel_dp *intel_dp; | |
555 | ||
556 | if (encoder->type != INTEL_OUTPUT_EDP) | |
557 | continue; | |
558 | ||
559 | intel_dp = enc_to_intel_dp(&encoder->base); | |
560 | intel_dp->pps_pipe = INVALID_PIPE; | |
561 | } | |
bf13e81b JN |
562 | } |
563 | ||
564 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
565 | { | |
566 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
567 | ||
568 | if (HAS_PCH_SPLIT(dev)) | |
569 | return PCH_PP_CONTROL; | |
570 | else | |
571 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
572 | } | |
573 | ||
574 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
575 | { | |
576 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
577 | ||
578 | if (HAS_PCH_SPLIT(dev)) | |
579 | return PCH_PP_STATUS; | |
580 | else | |
581 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
582 | } | |
583 | ||
01527b31 CT |
584 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
585 | This function only applicable when panel PM state is not to be tracked */ | |
586 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
587 | void *unused) | |
588 | { | |
589 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
590 | edp_notifier); | |
591 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
592 | struct drm_i915_private *dev_priv = dev->dev_private; | |
593 | u32 pp_div; | |
594 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
595 | |
596 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
597 | return 0; | |
598 | ||
773538e8 | 599 | pps_lock(intel_dp); |
e39b999a | 600 | |
01527b31 | 601 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
602 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
603 | ||
01527b31 CT |
604 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
605 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
606 | pp_div = I915_READ(pp_div_reg); | |
607 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
608 | ||
609 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
610 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
611 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
612 | msleep(intel_dp->panel_power_cycle_delay); | |
613 | } | |
614 | ||
773538e8 | 615 | pps_unlock(intel_dp); |
e39b999a | 616 | |
01527b31 CT |
617 | return 0; |
618 | } | |
619 | ||
4be73780 | 620 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 621 | { |
30add22d | 622 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
623 | struct drm_i915_private *dev_priv = dev->dev_private; |
624 | ||
e39b999a VS |
625 | lockdep_assert_held(&dev_priv->pps_mutex); |
626 | ||
9a42356b VS |
627 | if (IS_VALLEYVIEW(dev) && |
628 | intel_dp->pps_pipe == INVALID_PIPE) | |
629 | return false; | |
630 | ||
bf13e81b | 631 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
632 | } |
633 | ||
4be73780 | 634 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 635 | { |
30add22d | 636 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
637 | struct drm_i915_private *dev_priv = dev->dev_private; |
638 | ||
e39b999a VS |
639 | lockdep_assert_held(&dev_priv->pps_mutex); |
640 | ||
9a42356b VS |
641 | if (IS_VALLEYVIEW(dev) && |
642 | intel_dp->pps_pipe == INVALID_PIPE) | |
643 | return false; | |
644 | ||
773538e8 | 645 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
646 | } |
647 | ||
9b984dae KP |
648 | static void |
649 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
650 | { | |
30add22d | 651 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 652 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 653 | |
9b984dae KP |
654 | if (!is_edp(intel_dp)) |
655 | return; | |
453c5420 | 656 | |
4be73780 | 657 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
658 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
659 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
660 | I915_READ(_pp_stat_reg(intel_dp)), |
661 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
662 | } |
663 | } | |
664 | ||
9ee32fea DV |
665 | static uint32_t |
666 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
667 | { | |
668 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
669 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
670 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 671 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
672 | uint32_t status; |
673 | bool done; | |
674 | ||
ef04f00d | 675 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 676 | if (has_aux_irq) |
b18ac466 | 677 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 678 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
679 | else |
680 | done = wait_for_atomic(C, 10) == 0; | |
681 | if (!done) | |
682 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
683 | has_aux_irq); | |
684 | #undef C | |
685 | ||
686 | return status; | |
687 | } | |
688 | ||
ec5b01dd | 689 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 690 | { |
174edf1f PZ |
691 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
692 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 693 | |
ec5b01dd DL |
694 | /* |
695 | * The clock divider is based off the hrawclk, and would like to run at | |
696 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 697 | */ |
ec5b01dd DL |
698 | return index ? 0 : intel_hrawclk(dev) / 2; |
699 | } | |
700 | ||
701 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
702 | { | |
703 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
704 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
469d4b2a | 705 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd DL |
706 | |
707 | if (index) | |
708 | return 0; | |
709 | ||
710 | if (intel_dig_port->port == PORT_A) { | |
469d4b2a | 711 | return DIV_ROUND_UP(dev_priv->display.get_display_clock_speed(dev), 2000); |
ec5b01dd DL |
712 | } else { |
713 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
714 | } | |
715 | } | |
716 | ||
717 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
718 | { | |
719 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
720 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
721 | struct drm_i915_private *dev_priv = dev->dev_private; | |
722 | ||
723 | if (intel_dig_port->port == PORT_A) { | |
724 | if (index) | |
725 | return 0; | |
1652d19e | 726 | return DIV_ROUND_CLOSEST(dev_priv->display.get_display_clock_speed(dev), 2000); |
2c55c336 JN |
727 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
728 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
729 | switch (index) { |
730 | case 0: return 63; | |
731 | case 1: return 72; | |
732 | default: return 0; | |
733 | } | |
ec5b01dd | 734 | } else { |
bc86625a | 735 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 736 | } |
b84a1cf8 RV |
737 | } |
738 | ||
ec5b01dd DL |
739 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
740 | { | |
741 | return index ? 0 : 100; | |
742 | } | |
743 | ||
b6b5e383 DL |
744 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
745 | { | |
746 | /* | |
747 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
748 | * derive the clock from CDCLK automatically). We still implement the | |
749 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
750 | */ | |
751 | return index ? 0 : 1; | |
752 | } | |
753 | ||
5ed12a19 DL |
754 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
755 | bool has_aux_irq, | |
756 | int send_bytes, | |
757 | uint32_t aux_clock_divider) | |
758 | { | |
759 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
760 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
761 | uint32_t precharge, timeout; | |
762 | ||
763 | if (IS_GEN6(dev)) | |
764 | precharge = 3; | |
765 | else | |
766 | precharge = 5; | |
767 | ||
768 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
769 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
770 | else | |
771 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
772 | ||
773 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 774 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 775 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 776 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 777 | timeout | |
788d4433 | 778 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
779 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
780 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 781 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
782 | } |
783 | ||
b9ca5fad DL |
784 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
785 | bool has_aux_irq, | |
786 | int send_bytes, | |
787 | uint32_t unused) | |
788 | { | |
789 | return DP_AUX_CH_CTL_SEND_BUSY | | |
790 | DP_AUX_CH_CTL_DONE | | |
791 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
792 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
793 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
794 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
795 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
796 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
797 | } | |
798 | ||
b84a1cf8 RV |
799 | static int |
800 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 801 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
802 | uint8_t *recv, int recv_size) |
803 | { | |
804 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
805 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
806 | struct drm_i915_private *dev_priv = dev->dev_private; | |
807 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
808 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 809 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
810 | int i, ret, recv_bytes; |
811 | uint32_t status; | |
5ed12a19 | 812 | int try, clock = 0; |
4e6b788c | 813 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
814 | bool vdd; |
815 | ||
773538e8 | 816 | pps_lock(intel_dp); |
e39b999a | 817 | |
72c3500a VS |
818 | /* |
819 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
820 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
821 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
822 | * ourselves. | |
823 | */ | |
1e0560e0 | 824 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
825 | |
826 | /* dp aux is extremely sensitive to irq latency, hence request the | |
827 | * lowest possible wakeup latency and so prevent the cpu from going into | |
828 | * deep sleep states. | |
829 | */ | |
830 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
831 | ||
832 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 833 | |
c67a470b PZ |
834 | intel_aux_display_runtime_get(dev_priv); |
835 | ||
11bee43e JB |
836 | /* Try to wait for any previous AUX channel activity */ |
837 | for (try = 0; try < 3; try++) { | |
ef04f00d | 838 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
839 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
840 | break; | |
841 | msleep(1); | |
842 | } | |
843 | ||
844 | if (try == 3) { | |
845 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
846 | I915_READ(ch_ctl)); | |
9ee32fea DV |
847 | ret = -EBUSY; |
848 | goto out; | |
4f7f7b7e CW |
849 | } |
850 | ||
46a5ae9f PZ |
851 | /* Only 5 data registers! */ |
852 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
853 | ret = -E2BIG; | |
854 | goto out; | |
855 | } | |
856 | ||
ec5b01dd | 857 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
858 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
859 | has_aux_irq, | |
860 | send_bytes, | |
861 | aux_clock_divider); | |
5ed12a19 | 862 | |
bc86625a CW |
863 | /* Must try at least 3 times according to DP spec */ |
864 | for (try = 0; try < 5; try++) { | |
865 | /* Load the send data into the aux channel data registers */ | |
866 | for (i = 0; i < send_bytes; i += 4) | |
867 | I915_WRITE(ch_data + i, | |
a4f1289e RV |
868 | intel_dp_pack_aux(send + i, |
869 | send_bytes - i)); | |
bc86625a CW |
870 | |
871 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 872 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
873 | |
874 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
875 | ||
876 | /* Clear done status and any errors */ | |
877 | I915_WRITE(ch_ctl, | |
878 | status | | |
879 | DP_AUX_CH_CTL_DONE | | |
880 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
881 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
882 | ||
74ebf294 | 883 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) |
bc86625a | 884 | continue; |
74ebf294 TP |
885 | |
886 | /* DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2 | |
887 | * 400us delay required for errors and timeouts | |
888 | * Timeout errors from the HW already meet this | |
889 | * requirement so skip to next iteration | |
890 | */ | |
891 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { | |
892 | usleep_range(400, 500); | |
bc86625a | 893 | continue; |
74ebf294 | 894 | } |
bc86625a CW |
895 | if (status & DP_AUX_CH_CTL_DONE) |
896 | break; | |
897 | } | |
4f7f7b7e | 898 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
899 | break; |
900 | } | |
901 | ||
a4fc5ed6 | 902 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 903 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
904 | ret = -EBUSY; |
905 | goto out; | |
a4fc5ed6 KP |
906 | } |
907 | ||
908 | /* Check for timeout or receive error. | |
909 | * Timeouts occur when the sink is not connected | |
910 | */ | |
a5b3da54 | 911 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 912 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
913 | ret = -EIO; |
914 | goto out; | |
a5b3da54 | 915 | } |
1ae8c0a5 KP |
916 | |
917 | /* Timeouts occur when the device isn't connected, so they're | |
918 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 919 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 920 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
921 | ret = -ETIMEDOUT; |
922 | goto out; | |
a4fc5ed6 KP |
923 | } |
924 | ||
925 | /* Unload any bytes sent back from the other side */ | |
926 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
927 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
928 | if (recv_bytes > recv_size) |
929 | recv_bytes = recv_size; | |
0206e353 | 930 | |
4f7f7b7e | 931 | for (i = 0; i < recv_bytes; i += 4) |
a4f1289e RV |
932 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
933 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 934 | |
9ee32fea DV |
935 | ret = recv_bytes; |
936 | out: | |
937 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 938 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 939 | |
884f19e9 JN |
940 | if (vdd) |
941 | edp_panel_vdd_off(intel_dp, false); | |
942 | ||
773538e8 | 943 | pps_unlock(intel_dp); |
e39b999a | 944 | |
9ee32fea | 945 | return ret; |
a4fc5ed6 KP |
946 | } |
947 | ||
a6c8aff0 JN |
948 | #define BARE_ADDRESS_SIZE 3 |
949 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
950 | static ssize_t |
951 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 952 | { |
9d1a1031 JN |
953 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
954 | uint8_t txbuf[20], rxbuf[20]; | |
955 | size_t txsize, rxsize; | |
a4fc5ed6 | 956 | int ret; |
a4fc5ed6 | 957 | |
d2d9cbbd VS |
958 | txbuf[0] = (msg->request << 4) | |
959 | ((msg->address >> 16) & 0xf); | |
960 | txbuf[1] = (msg->address >> 8) & 0xff; | |
9d1a1031 JN |
961 | txbuf[2] = msg->address & 0xff; |
962 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 963 | |
9d1a1031 JN |
964 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
965 | case DP_AUX_NATIVE_WRITE: | |
966 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 967 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
a1ddefd8 | 968 | rxsize = 2; /* 0 or 1 data bytes */ |
f51a44b9 | 969 | |
9d1a1031 JN |
970 | if (WARN_ON(txsize > 20)) |
971 | return -E2BIG; | |
a4fc5ed6 | 972 | |
9d1a1031 | 973 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 974 | |
9d1a1031 JN |
975 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
976 | if (ret > 0) { | |
977 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 978 | |
a1ddefd8 JN |
979 | if (ret > 1) { |
980 | /* Number of bytes written in a short write. */ | |
981 | ret = clamp_t(int, rxbuf[1], 0, msg->size); | |
982 | } else { | |
983 | /* Return payload size. */ | |
984 | ret = msg->size; | |
985 | } | |
9d1a1031 JN |
986 | } |
987 | break; | |
46a5ae9f | 988 | |
9d1a1031 JN |
989 | case DP_AUX_NATIVE_READ: |
990 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 991 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 992 | rxsize = msg->size + 1; |
a4fc5ed6 | 993 | |
9d1a1031 JN |
994 | if (WARN_ON(rxsize > 20)) |
995 | return -E2BIG; | |
a4fc5ed6 | 996 | |
9d1a1031 JN |
997 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
998 | if (ret > 0) { | |
999 | msg->reply = rxbuf[0] >> 4; | |
1000 | /* | |
1001 | * Assume happy day, and copy the data. The caller is | |
1002 | * expected to check msg->reply before touching it. | |
1003 | * | |
1004 | * Return payload size. | |
1005 | */ | |
1006 | ret--; | |
1007 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 1008 | } |
9d1a1031 JN |
1009 | break; |
1010 | ||
1011 | default: | |
1012 | ret = -EINVAL; | |
1013 | break; | |
a4fc5ed6 | 1014 | } |
f51a44b9 | 1015 | |
9d1a1031 | 1016 | return ret; |
a4fc5ed6 KP |
1017 | } |
1018 | ||
9d1a1031 JN |
1019 | static void |
1020 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
1021 | { | |
1022 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
1023 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1024 | enum port port = intel_dig_port->port; | |
0b99836f | 1025 | const char *name = NULL; |
ab2c0672 DA |
1026 | int ret; |
1027 | ||
33ad6626 JN |
1028 | switch (port) { |
1029 | case PORT_A: | |
1030 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 1031 | name = "DPDDC-A"; |
ab2c0672 | 1032 | break; |
33ad6626 JN |
1033 | case PORT_B: |
1034 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 1035 | name = "DPDDC-B"; |
ab2c0672 | 1036 | break; |
33ad6626 JN |
1037 | case PORT_C: |
1038 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 1039 | name = "DPDDC-C"; |
ab2c0672 | 1040 | break; |
33ad6626 JN |
1041 | case PORT_D: |
1042 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 1043 | name = "DPDDC-D"; |
33ad6626 JN |
1044 | break; |
1045 | default: | |
1046 | BUG(); | |
ab2c0672 DA |
1047 | } |
1048 | ||
1b1aad75 DL |
1049 | /* |
1050 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
1051 | * | |
1052 | * On Haswell and Broadwell though: | |
1053 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
1054 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
1055 | * | |
1056 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
1057 | */ | |
1058 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) | |
33ad6626 | 1059 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 1060 | |
0b99836f | 1061 | intel_dp->aux.name = name; |
9d1a1031 JN |
1062 | intel_dp->aux.dev = dev->dev; |
1063 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 1064 | |
0b99836f JN |
1065 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1066 | connector->base.kdev->kobj.name); | |
8316f337 | 1067 | |
4f71d0cb | 1068 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 1069 | if (ret < 0) { |
4f71d0cb | 1070 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
1071 | name, ret); |
1072 | return; | |
ab2c0672 | 1073 | } |
8a5e6aeb | 1074 | |
0b99836f JN |
1075 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
1076 | &intel_dp->aux.ddc.dev.kobj, | |
1077 | intel_dp->aux.ddc.dev.kobj.name); | |
1078 | if (ret < 0) { | |
1079 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 1080 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 1081 | } |
a4fc5ed6 KP |
1082 | } |
1083 | ||
80f65de3 ID |
1084 | static void |
1085 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
1086 | { | |
1087 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
1088 | ||
0e32b39c DA |
1089 | if (!intel_connector->mst_port) |
1090 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
1091 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
1092 | intel_connector_unregister(intel_connector); |
1093 | } | |
1094 | ||
5416d871 | 1095 | static void |
c3346ef6 | 1096 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config, int link_clock) |
5416d871 DL |
1097 | { |
1098 | u32 ctrl1; | |
1099 | ||
dd3cd74a ACO |
1100 | memset(&pipe_config->dpll_hw_state, 0, |
1101 | sizeof(pipe_config->dpll_hw_state)); | |
1102 | ||
5416d871 DL |
1103 | pipe_config->ddi_pll_sel = SKL_DPLL0; |
1104 | pipe_config->dpll_hw_state.cfgcr1 = 0; | |
1105 | pipe_config->dpll_hw_state.cfgcr2 = 0; | |
1106 | ||
1107 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
c3346ef6 SJ |
1108 | switch (link_clock / 2) { |
1109 | case 81000: | |
71cd8423 | 1110 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, |
5416d871 DL |
1111 | SKL_DPLL0); |
1112 | break; | |
c3346ef6 | 1113 | case 135000: |
71cd8423 | 1114 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, |
5416d871 DL |
1115 | SKL_DPLL0); |
1116 | break; | |
c3346ef6 | 1117 | case 270000: |
71cd8423 | 1118 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, |
5416d871 DL |
1119 | SKL_DPLL0); |
1120 | break; | |
c3346ef6 | 1121 | case 162000: |
71cd8423 | 1122 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, |
c3346ef6 SJ |
1123 | SKL_DPLL0); |
1124 | break; | |
1125 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which | |
1126 | results in CDCLK change. Need to handle the change of CDCLK by | |
1127 | disabling pipes and re-enabling them */ | |
1128 | case 108000: | |
71cd8423 | 1129 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, |
c3346ef6 SJ |
1130 | SKL_DPLL0); |
1131 | break; | |
1132 | case 216000: | |
71cd8423 | 1133 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, |
c3346ef6 SJ |
1134 | SKL_DPLL0); |
1135 | break; | |
1136 | ||
5416d871 DL |
1137 | } |
1138 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; | |
1139 | } | |
1140 | ||
0e50338c | 1141 | static void |
5cec258b | 1142 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config, int link_bw) |
0e50338c DV |
1143 | { |
1144 | switch (link_bw) { | |
1145 | case DP_LINK_BW_1_62: | |
1146 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
1147 | break; | |
1148 | case DP_LINK_BW_2_7: | |
1149 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
1150 | break; | |
1151 | case DP_LINK_BW_5_4: | |
1152 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
1153 | break; | |
1154 | } | |
1155 | } | |
1156 | ||
fc0f8e25 | 1157 | static int |
12f6a2e2 | 1158 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
fc0f8e25 | 1159 | { |
94ca719e VS |
1160 | if (intel_dp->num_sink_rates) { |
1161 | *sink_rates = intel_dp->sink_rates; | |
1162 | return intel_dp->num_sink_rates; | |
fc0f8e25 | 1163 | } |
12f6a2e2 VS |
1164 | |
1165 | *sink_rates = default_rates; | |
1166 | ||
1167 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
fc0f8e25 SJ |
1168 | } |
1169 | ||
a8f3ef61 | 1170 | static int |
1db10e28 | 1171 | intel_dp_source_rates(struct drm_device *dev, const int **source_rates) |
a8f3ef61 | 1172 | { |
637a9c63 SJ |
1173 | if (IS_SKYLAKE(dev)) { |
1174 | *source_rates = skl_rates; | |
1175 | return ARRAY_SIZE(skl_rates); | |
fe51bfb9 VS |
1176 | } else if (IS_CHERRYVIEW(dev)) { |
1177 | *source_rates = chv_rates; | |
1178 | return ARRAY_SIZE(chv_rates); | |
a8f3ef61 | 1179 | } |
636280ba VS |
1180 | |
1181 | *source_rates = default_rates; | |
1182 | ||
1db10e28 VS |
1183 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) |
1184 | /* WaDisableHBR2:skl */ | |
1185 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
1186 | else if (INTEL_INFO(dev)->gen >= 8 || | |
1187 | (IS_HASWELL(dev) && !IS_HSW_ULX(dev))) | |
1188 | return (DP_LINK_BW_5_4 >> 3) + 1; | |
1189 | else | |
1190 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
a8f3ef61 SJ |
1191 | } |
1192 | ||
c6bb3538 DV |
1193 | static void |
1194 | intel_dp_set_clock(struct intel_encoder *encoder, | |
5cec258b | 1195 | struct intel_crtc_state *pipe_config, int link_bw) |
c6bb3538 DV |
1196 | { |
1197 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1198 | const struct dp_link_dpll *divisor = NULL; |
1199 | int i, count = 0; | |
c6bb3538 DV |
1200 | |
1201 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1202 | divisor = gen4_dpll; |
1203 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1204 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1205 | divisor = pch_dpll; |
1206 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1207 | } else if (IS_CHERRYVIEW(dev)) { |
1208 | divisor = chv_dpll; | |
1209 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1210 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1211 | divisor = vlv_dpll; |
1212 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1213 | } |
9dd4ffdf CML |
1214 | |
1215 | if (divisor && count) { | |
1216 | for (i = 0; i < count; i++) { | |
1217 | if (link_bw == divisor[i].link_bw) { | |
1218 | pipe_config->dpll = divisor[i].dpll; | |
1219 | pipe_config->clock_set = true; | |
1220 | break; | |
1221 | } | |
1222 | } | |
c6bb3538 DV |
1223 | } |
1224 | } | |
1225 | ||
2ecae76a VS |
1226 | static int intersect_rates(const int *source_rates, int source_len, |
1227 | const int *sink_rates, int sink_len, | |
94ca719e | 1228 | int *common_rates) |
a8f3ef61 SJ |
1229 | { |
1230 | int i = 0, j = 0, k = 0; | |
1231 | ||
a8f3ef61 SJ |
1232 | while (i < source_len && j < sink_len) { |
1233 | if (source_rates[i] == sink_rates[j]) { | |
e6bda3e4 VS |
1234 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) |
1235 | return k; | |
94ca719e | 1236 | common_rates[k] = source_rates[i]; |
a8f3ef61 SJ |
1237 | ++k; |
1238 | ++i; | |
1239 | ++j; | |
1240 | } else if (source_rates[i] < sink_rates[j]) { | |
1241 | ++i; | |
1242 | } else { | |
1243 | ++j; | |
1244 | } | |
1245 | } | |
1246 | return k; | |
1247 | } | |
1248 | ||
94ca719e VS |
1249 | static int intel_dp_common_rates(struct intel_dp *intel_dp, |
1250 | int *common_rates) | |
2ecae76a VS |
1251 | { |
1252 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1253 | const int *source_rates, *sink_rates; | |
1254 | int source_len, sink_len; | |
1255 | ||
1256 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1257 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1258 | ||
1259 | return intersect_rates(source_rates, source_len, | |
1260 | sink_rates, sink_len, | |
94ca719e | 1261 | common_rates); |
2ecae76a VS |
1262 | } |
1263 | ||
0336400e VS |
1264 | static void snprintf_int_array(char *str, size_t len, |
1265 | const int *array, int nelem) | |
1266 | { | |
1267 | int i; | |
1268 | ||
1269 | str[0] = '\0'; | |
1270 | ||
1271 | for (i = 0; i < nelem; i++) { | |
b2f505be | 1272 | int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]); |
0336400e VS |
1273 | if (r >= len) |
1274 | return; | |
1275 | str += r; | |
1276 | len -= r; | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | static void intel_dp_print_rates(struct intel_dp *intel_dp) | |
1281 | { | |
1282 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1283 | const int *source_rates, *sink_rates; | |
94ca719e VS |
1284 | int source_len, sink_len, common_len; |
1285 | int common_rates[DP_MAX_SUPPORTED_RATES]; | |
0336400e VS |
1286 | char str[128]; /* FIXME: too big for stack? */ |
1287 | ||
1288 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1289 | return; | |
1290 | ||
1291 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1292 | snprintf_int_array(str, sizeof(str), source_rates, source_len); | |
1293 | DRM_DEBUG_KMS("source rates: %s\n", str); | |
1294 | ||
1295 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1296 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); | |
1297 | DRM_DEBUG_KMS("sink rates: %s\n", str); | |
1298 | ||
94ca719e VS |
1299 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1300 | snprintf_int_array(str, sizeof(str), common_rates, common_len); | |
1301 | DRM_DEBUG_KMS("common rates: %s\n", str); | |
0336400e VS |
1302 | } |
1303 | ||
f4896f15 | 1304 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1305 | { |
1306 | int i = 0; | |
1307 | ||
1308 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1309 | if (find == rates[i]) | |
1310 | break; | |
1311 | ||
1312 | return i; | |
1313 | } | |
1314 | ||
50fec21a VS |
1315 | int |
1316 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1317 | { | |
1318 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1319 | int len; | |
1320 | ||
94ca719e | 1321 | len = intel_dp_common_rates(intel_dp, rates); |
50fec21a VS |
1322 | if (WARN_ON(len <= 0)) |
1323 | return 162000; | |
1324 | ||
1325 | return rates[rate_to_index(0, rates) - 1]; | |
1326 | } | |
1327 | ||
ed4e9c1d VS |
1328 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1329 | { | |
94ca719e | 1330 | return rate_to_index(rate, intel_dp->sink_rates); |
ed4e9c1d VS |
1331 | } |
1332 | ||
00c09d70 | 1333 | bool |
5bfe2ac0 | 1334 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1335 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1336 | { |
5bfe2ac0 | 1337 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1338 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1339 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1340 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1341 | enum port port = dp_to_dig_port(intel_dp)->port; |
84556d58 | 1342 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
dd06f90e | 1343 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1344 | int lane_count, clock; |
56071a20 | 1345 | int min_lane_count = 1; |
eeb6324d | 1346 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1347 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1348 | int min_clock = 0; |
a8f3ef61 | 1349 | int max_clock; |
083f9560 | 1350 | int bpp, mode_rate; |
ff9a6750 | 1351 | int link_avail, link_clock; |
94ca719e VS |
1352 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1353 | int common_len; | |
a8f3ef61 | 1354 | |
94ca719e | 1355 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
a8f3ef61 SJ |
1356 | |
1357 | /* No common link rates between source and sink */ | |
94ca719e | 1358 | WARN_ON(common_len <= 0); |
a8f3ef61 | 1359 | |
94ca719e | 1360 | max_clock = common_len - 1; |
a4fc5ed6 | 1361 | |
bc7d38a4 | 1362 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1363 | pipe_config->has_pch_encoder = true; |
1364 | ||
03afc4a2 | 1365 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1366 | pipe_config->has_drrs = false; |
9fcb1704 | 1367 | pipe_config->has_audio = intel_dp->has_audio && port != PORT_A; |
a4fc5ed6 | 1368 | |
dd06f90e JN |
1369 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1370 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1371 | adjusted_mode); | |
a1b2278e CK |
1372 | |
1373 | if (INTEL_INFO(dev)->gen >= 9) { | |
1374 | int ret; | |
1375 | ret = skl_update_scaler_users(intel_crtc, pipe_config, NULL, NULL, 0); | |
1376 | if (ret) | |
1377 | return ret; | |
1378 | } | |
1379 | ||
2dd24552 JB |
1380 | if (!HAS_PCH_SPLIT(dev)) |
1381 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1382 | intel_connector->panel.fitting_mode); | |
1383 | else | |
b074cec8 JB |
1384 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1385 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1386 | } |
1387 | ||
cb1793ce | 1388 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1389 | return false; |
1390 | ||
083f9560 | 1391 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 | 1392 | "max bw %d pixel clock %iKHz\n", |
94ca719e | 1393 | max_lane_count, common_rates[max_clock], |
241bfc38 | 1394 | adjusted_mode->crtc_clock); |
083f9560 | 1395 | |
36008365 DV |
1396 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1397 | * bpc in between. */ | |
3e7ca985 | 1398 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1399 | if (is_edp(intel_dp)) { |
1400 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1401 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1402 | dev_priv->vbt.edp_bpp); | |
1403 | bpp = dev_priv->vbt.edp_bpp; | |
1404 | } | |
1405 | ||
344c5bbc JN |
1406 | /* |
1407 | * Use the maximum clock and number of lanes the eDP panel | |
1408 | * advertizes being capable of. The panels are generally | |
1409 | * designed to support only a single clock and lane | |
1410 | * configuration, and typically these values correspond to the | |
1411 | * native resolution of the panel. | |
1412 | */ | |
1413 | min_lane_count = max_lane_count; | |
1414 | min_clock = max_clock; | |
7984211e | 1415 | } |
657445fe | 1416 | |
36008365 | 1417 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1418 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1419 | bpp); | |
36008365 | 1420 | |
c6930992 | 1421 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1422 | for (lane_count = min_lane_count; |
1423 | lane_count <= max_lane_count; | |
1424 | lane_count <<= 1) { | |
1425 | ||
94ca719e | 1426 | link_clock = common_rates[clock]; |
36008365 DV |
1427 | link_avail = intel_dp_max_data_rate(link_clock, |
1428 | lane_count); | |
1429 | ||
1430 | if (mode_rate <= link_avail) { | |
1431 | goto found; | |
1432 | } | |
1433 | } | |
1434 | } | |
1435 | } | |
c4867936 | 1436 | |
36008365 | 1437 | return false; |
3685a8f3 | 1438 | |
36008365 | 1439 | found: |
55bc60db VS |
1440 | if (intel_dp->color_range_auto) { |
1441 | /* | |
1442 | * See: | |
1443 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1444 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1445 | */ | |
18316c8c | 1446 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1447 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1448 | else | |
1449 | intel_dp->color_range = 0; | |
1450 | } | |
1451 | ||
3685a8f3 | 1452 | if (intel_dp->color_range) |
50f3b016 | 1453 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1454 | |
36008365 | 1455 | intel_dp->lane_count = lane_count; |
a8f3ef61 | 1456 | |
94ca719e | 1457 | if (intel_dp->num_sink_rates) { |
bc27b7d3 | 1458 | intel_dp->link_bw = 0; |
a8f3ef61 | 1459 | intel_dp->rate_select = |
94ca719e | 1460 | intel_dp_rate_select(intel_dp, common_rates[clock]); |
bc27b7d3 VS |
1461 | } else { |
1462 | intel_dp->link_bw = | |
94ca719e | 1463 | drm_dp_link_rate_to_bw_code(common_rates[clock]); |
bc27b7d3 | 1464 | intel_dp->rate_select = 0; |
a8f3ef61 SJ |
1465 | } |
1466 | ||
657445fe | 1467 | pipe_config->pipe_bpp = bpp; |
94ca719e | 1468 | pipe_config->port_clock = common_rates[clock]; |
a4fc5ed6 | 1469 | |
36008365 DV |
1470 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1471 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1472 | pipe_config->port_clock, bpp); |
36008365 DV |
1473 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1474 | mode_rate, link_avail); | |
a4fc5ed6 | 1475 | |
03afc4a2 | 1476 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1477 | adjusted_mode->crtc_clock, |
1478 | pipe_config->port_clock, | |
03afc4a2 | 1479 | &pipe_config->dp_m_n); |
9d1a455b | 1480 | |
439d7ac0 | 1481 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1482 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1483 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1484 | intel_link_compute_m_n(bpp, lane_count, |
1485 | intel_connector->panel.downclock_mode->clock, | |
1486 | pipe_config->port_clock, | |
1487 | &pipe_config->dp_m2_n2); | |
1488 | } | |
1489 | ||
5416d871 | 1490 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
94ca719e | 1491 | skl_edp_set_pll_config(pipe_config, common_rates[clock]); |
977bb38d S |
1492 | else if (IS_BROXTON(dev)) |
1493 | /* handled in ddi */; | |
5416d871 | 1494 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1495 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1496 | else | |
1497 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1498 | |
03afc4a2 | 1499 | return true; |
a4fc5ed6 KP |
1500 | } |
1501 | ||
7c62a164 | 1502 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1503 | { |
7c62a164 DV |
1504 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1505 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1506 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1507 | struct drm_i915_private *dev_priv = dev->dev_private; |
1508 | u32 dpa_ctl; | |
1509 | ||
6e3c9717 ACO |
1510 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1511 | crtc->config->port_clock); | |
ea9b6006 DV |
1512 | dpa_ctl = I915_READ(DP_A); |
1513 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1514 | ||
6e3c9717 | 1515 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1516 | /* For a long time we've carried around a ILK-DevA w/a for the |
1517 | * 160MHz clock. If we're really unlucky, it's still required. | |
1518 | */ | |
1519 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1520 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1521 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1522 | } else { |
1523 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1524 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1525 | } |
1ce17038 | 1526 | |
ea9b6006 DV |
1527 | I915_WRITE(DP_A, dpa_ctl); |
1528 | ||
1529 | POSTING_READ(DP_A); | |
1530 | udelay(500); | |
1531 | } | |
1532 | ||
8ac33ed3 | 1533 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1534 | { |
b934223d | 1535 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1536 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1537 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1538 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1539 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
6e3c9717 | 1540 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1541 | |
417e822d | 1542 | /* |
1a2eb460 | 1543 | * There are four kinds of DP registers: |
417e822d KP |
1544 | * |
1545 | * IBX PCH | |
1a2eb460 KP |
1546 | * SNB CPU |
1547 | * IVB CPU | |
417e822d KP |
1548 | * CPT PCH |
1549 | * | |
1550 | * IBX PCH and CPU are the same for almost everything, | |
1551 | * except that the CPU DP PLL is configured in this | |
1552 | * register | |
1553 | * | |
1554 | * CPT PCH is quite different, having many bits moved | |
1555 | * to the TRANS_DP_CTL register instead. That | |
1556 | * configuration happens (oddly) in ironlake_pch_enable | |
1557 | */ | |
9c9e7927 | 1558 | |
417e822d KP |
1559 | /* Preserve the BIOS-computed detected bit. This is |
1560 | * supposed to be read-only. | |
1561 | */ | |
1562 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1563 | |
417e822d | 1564 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1565 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1566 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1567 | |
6e3c9717 | 1568 | if (crtc->config->has_audio) |
ea5b213a | 1569 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1570 | |
417e822d | 1571 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1572 | |
bc7d38a4 | 1573 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1574 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1575 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1576 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1577 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1578 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1579 | ||
6aba5b6c | 1580 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1581 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1582 | ||
7c62a164 | 1583 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1584 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1585 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1586 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1587 | |
1588 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1589 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1590 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1591 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1592 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1593 | ||
6aba5b6c | 1594 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1595 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1596 | ||
44f37d1f CML |
1597 | if (!IS_CHERRYVIEW(dev)) { |
1598 | if (crtc->pipe == 1) | |
1599 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1600 | } else { | |
1601 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1602 | } | |
417e822d KP |
1603 | } else { |
1604 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1605 | } |
a4fc5ed6 KP |
1606 | } |
1607 | ||
ffd6749d PZ |
1608 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1609 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1610 | |
1a5ef5b7 PZ |
1611 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1612 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1613 | |
ffd6749d PZ |
1614 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1615 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1616 | |
4be73780 | 1617 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1618 | u32 mask, |
1619 | u32 value) | |
bd943159 | 1620 | { |
30add22d | 1621 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1622 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1623 | u32 pp_stat_reg, pp_ctrl_reg; |
1624 | ||
e39b999a VS |
1625 | lockdep_assert_held(&dev_priv->pps_mutex); |
1626 | ||
bf13e81b JN |
1627 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1628 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1629 | |
99ea7127 | 1630 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1631 | mask, value, |
1632 | I915_READ(pp_stat_reg), | |
1633 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1634 | |
453c5420 | 1635 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1636 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1637 | I915_READ(pp_stat_reg), |
1638 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1639 | } |
54c136d4 CW |
1640 | |
1641 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1642 | } |
32ce697c | 1643 | |
4be73780 | 1644 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1645 | { |
1646 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1647 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1648 | } |
1649 | ||
4be73780 | 1650 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1651 | { |
1652 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1653 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1654 | } |
1655 | ||
4be73780 | 1656 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1657 | { |
1658 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1659 | |
1660 | /* When we disable the VDD override bit last we have to do the manual | |
1661 | * wait. */ | |
1662 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1663 | intel_dp->panel_power_cycle_delay); | |
1664 | ||
4be73780 | 1665 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1666 | } |
1667 | ||
4be73780 | 1668 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1669 | { |
1670 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1671 | intel_dp->backlight_on_delay); | |
1672 | } | |
1673 | ||
4be73780 | 1674 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1675 | { |
1676 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1677 | intel_dp->backlight_off_delay); | |
1678 | } | |
99ea7127 | 1679 | |
832dd3c1 KP |
1680 | /* Read the current pp_control value, unlocking the register if it |
1681 | * is locked | |
1682 | */ | |
1683 | ||
453c5420 | 1684 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1685 | { |
453c5420 JB |
1686 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1687 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1688 | u32 control; | |
832dd3c1 | 1689 | |
e39b999a VS |
1690 | lockdep_assert_held(&dev_priv->pps_mutex); |
1691 | ||
bf13e81b | 1692 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1693 | control &= ~PANEL_UNLOCK_MASK; |
1694 | control |= PANEL_UNLOCK_REGS; | |
1695 | return control; | |
bd943159 KP |
1696 | } |
1697 | ||
951468f3 VS |
1698 | /* |
1699 | * Must be paired with edp_panel_vdd_off(). | |
1700 | * Must hold pps_mutex around the whole on/off sequence. | |
1701 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1702 | */ | |
1e0560e0 | 1703 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1704 | { |
30add22d | 1705 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1706 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1707 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1708 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1709 | enum intel_display_power_domain power_domain; |
5d613501 | 1710 | u32 pp; |
453c5420 | 1711 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1712 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1713 | |
e39b999a VS |
1714 | lockdep_assert_held(&dev_priv->pps_mutex); |
1715 | ||
97af61f5 | 1716 | if (!is_edp(intel_dp)) |
adddaaf4 | 1717 | return false; |
bd943159 | 1718 | |
2c623c11 | 1719 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1720 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1721 | |
4be73780 | 1722 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1723 | return need_to_disable; |
b0665d57 | 1724 | |
4e6e1a54 ID |
1725 | power_domain = intel_display_port_power_domain(intel_encoder); |
1726 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1727 | |
3936fcf4 VS |
1728 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1729 | port_name(intel_dig_port->port)); | |
bd943159 | 1730 | |
4be73780 DV |
1731 | if (!edp_have_panel_power(intel_dp)) |
1732 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1733 | |
453c5420 | 1734 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1735 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1736 | |
bf13e81b JN |
1737 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1738 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1739 | |
1740 | I915_WRITE(pp_ctrl_reg, pp); | |
1741 | POSTING_READ(pp_ctrl_reg); | |
1742 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1743 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1744 | /* |
1745 | * If the panel wasn't on, delay before accessing aux channel | |
1746 | */ | |
4be73780 | 1747 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1748 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1749 | port_name(intel_dig_port->port)); | |
f01eca2e | 1750 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1751 | } |
adddaaf4 JN |
1752 | |
1753 | return need_to_disable; | |
1754 | } | |
1755 | ||
951468f3 VS |
1756 | /* |
1757 | * Must be paired with intel_edp_panel_vdd_off() or | |
1758 | * intel_edp_panel_off(). | |
1759 | * Nested calls to these functions are not allowed since | |
1760 | * we drop the lock. Caller must use some higher level | |
1761 | * locking to prevent nested calls from other threads. | |
1762 | */ | |
b80d6c78 | 1763 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1764 | { |
c695b6b6 | 1765 | bool vdd; |
adddaaf4 | 1766 | |
c695b6b6 VS |
1767 | if (!is_edp(intel_dp)) |
1768 | return; | |
1769 | ||
773538e8 | 1770 | pps_lock(intel_dp); |
c695b6b6 | 1771 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1772 | pps_unlock(intel_dp); |
c695b6b6 | 1773 | |
e2c719b7 | 1774 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1775 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1776 | } |
1777 | ||
4be73780 | 1778 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1779 | { |
30add22d | 1780 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1781 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1782 | struct intel_digital_port *intel_dig_port = |
1783 | dp_to_dig_port(intel_dp); | |
1784 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1785 | enum intel_display_power_domain power_domain; | |
5d613501 | 1786 | u32 pp; |
453c5420 | 1787 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1788 | |
e39b999a | 1789 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1790 | |
15e899a0 | 1791 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1792 | |
15e899a0 | 1793 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1794 | return; |
b0665d57 | 1795 | |
3936fcf4 VS |
1796 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1797 | port_name(intel_dig_port->port)); | |
bd943159 | 1798 | |
be2c9196 VS |
1799 | pp = ironlake_get_pp_control(intel_dp); |
1800 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1801 | |
be2c9196 VS |
1802 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1803 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1804 | |
be2c9196 VS |
1805 | I915_WRITE(pp_ctrl_reg, pp); |
1806 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1807 | |
be2c9196 VS |
1808 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1809 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1810 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1811 | |
be2c9196 VS |
1812 | if ((pp & POWER_TARGET_ON) == 0) |
1813 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1814 | |
be2c9196 VS |
1815 | power_domain = intel_display_port_power_domain(intel_encoder); |
1816 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1817 | } |
5d613501 | 1818 | |
4be73780 | 1819 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1820 | { |
1821 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1822 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1823 | |
773538e8 | 1824 | pps_lock(intel_dp); |
15e899a0 VS |
1825 | if (!intel_dp->want_panel_vdd) |
1826 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1827 | pps_unlock(intel_dp); |
bd943159 KP |
1828 | } |
1829 | ||
aba86890 ID |
1830 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1831 | { | |
1832 | unsigned long delay; | |
1833 | ||
1834 | /* | |
1835 | * Queue the timer to fire a long time from now (relative to the power | |
1836 | * down delay) to keep the panel power up across a sequence of | |
1837 | * operations. | |
1838 | */ | |
1839 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1840 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1841 | } | |
1842 | ||
951468f3 VS |
1843 | /* |
1844 | * Must be paired with edp_panel_vdd_on(). | |
1845 | * Must hold pps_mutex around the whole on/off sequence. | |
1846 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1847 | */ | |
4be73780 | 1848 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1849 | { |
e39b999a VS |
1850 | struct drm_i915_private *dev_priv = |
1851 | intel_dp_to_dev(intel_dp)->dev_private; | |
1852 | ||
1853 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1854 | ||
97af61f5 KP |
1855 | if (!is_edp(intel_dp)) |
1856 | return; | |
5d613501 | 1857 | |
e2c719b7 | 1858 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1859 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1860 | |
bd943159 KP |
1861 | intel_dp->want_panel_vdd = false; |
1862 | ||
aba86890 | 1863 | if (sync) |
4be73780 | 1864 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1865 | else |
1866 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1867 | } |
1868 | ||
9f0fb5be | 1869 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1870 | { |
30add22d | 1871 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1872 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1873 | u32 pp; |
453c5420 | 1874 | u32 pp_ctrl_reg; |
9934c132 | 1875 | |
9f0fb5be VS |
1876 | lockdep_assert_held(&dev_priv->pps_mutex); |
1877 | ||
97af61f5 | 1878 | if (!is_edp(intel_dp)) |
bd943159 | 1879 | return; |
99ea7127 | 1880 | |
3936fcf4 VS |
1881 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1882 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1883 | |
e7a89ace VS |
1884 | if (WARN(edp_have_panel_power(intel_dp), |
1885 | "eDP port %c panel power already on\n", | |
1886 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1887 | return; |
9934c132 | 1888 | |
4be73780 | 1889 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1890 | |
bf13e81b | 1891 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1892 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1893 | if (IS_GEN5(dev)) { |
1894 | /* ILK workaround: disable reset around power sequence */ | |
1895 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1896 | I915_WRITE(pp_ctrl_reg, pp); |
1897 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1898 | } |
37c6c9b0 | 1899 | |
1c0ae80a | 1900 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1901 | if (!IS_GEN5(dev)) |
1902 | pp |= PANEL_POWER_RESET; | |
1903 | ||
453c5420 JB |
1904 | I915_WRITE(pp_ctrl_reg, pp); |
1905 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1906 | |
4be73780 | 1907 | wait_panel_on(intel_dp); |
dce56b3c | 1908 | intel_dp->last_power_on = jiffies; |
9934c132 | 1909 | |
05ce1a49 KP |
1910 | if (IS_GEN5(dev)) { |
1911 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1912 | I915_WRITE(pp_ctrl_reg, pp); |
1913 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1914 | } |
9f0fb5be | 1915 | } |
e39b999a | 1916 | |
9f0fb5be VS |
1917 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1918 | { | |
1919 | if (!is_edp(intel_dp)) | |
1920 | return; | |
1921 | ||
1922 | pps_lock(intel_dp); | |
1923 | edp_panel_on(intel_dp); | |
773538e8 | 1924 | pps_unlock(intel_dp); |
9934c132 JB |
1925 | } |
1926 | ||
9f0fb5be VS |
1927 | |
1928 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1929 | { |
4e6e1a54 ID |
1930 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1931 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1932 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1933 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1934 | enum intel_display_power_domain power_domain; |
99ea7127 | 1935 | u32 pp; |
453c5420 | 1936 | u32 pp_ctrl_reg; |
9934c132 | 1937 | |
9f0fb5be VS |
1938 | lockdep_assert_held(&dev_priv->pps_mutex); |
1939 | ||
97af61f5 KP |
1940 | if (!is_edp(intel_dp)) |
1941 | return; | |
37c6c9b0 | 1942 | |
3936fcf4 VS |
1943 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
1944 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 1945 | |
3936fcf4 VS |
1946 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
1947 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 1948 | |
453c5420 | 1949 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1950 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1951 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1952 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1953 | EDP_BLC_ENABLE); | |
453c5420 | 1954 | |
bf13e81b | 1955 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1956 | |
849e39f5 PZ |
1957 | intel_dp->want_panel_vdd = false; |
1958 | ||
453c5420 JB |
1959 | I915_WRITE(pp_ctrl_reg, pp); |
1960 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1961 | |
dce56b3c | 1962 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1963 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1964 | |
1965 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1966 | power_domain = intel_display_port_power_domain(intel_encoder); |
1967 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 1968 | } |
e39b999a | 1969 | |
9f0fb5be VS |
1970 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
1971 | { | |
1972 | if (!is_edp(intel_dp)) | |
1973 | return; | |
e39b999a | 1974 | |
9f0fb5be VS |
1975 | pps_lock(intel_dp); |
1976 | edp_panel_off(intel_dp); | |
773538e8 | 1977 | pps_unlock(intel_dp); |
9934c132 JB |
1978 | } |
1979 | ||
1250d107 JN |
1980 | /* Enable backlight in the panel power control. */ |
1981 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1982 | { |
da63a9f2 PZ |
1983 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1984 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1985 | struct drm_i915_private *dev_priv = dev->dev_private; |
1986 | u32 pp; | |
453c5420 | 1987 | u32 pp_ctrl_reg; |
32f9d658 | 1988 | |
01cb9ea6 JB |
1989 | /* |
1990 | * If we enable the backlight right away following a panel power | |
1991 | * on, we may see slight flicker as the panel syncs with the eDP | |
1992 | * link. So delay a bit to make sure the image is solid before | |
1993 | * allowing it to appear. | |
1994 | */ | |
4be73780 | 1995 | wait_backlight_on(intel_dp); |
e39b999a | 1996 | |
773538e8 | 1997 | pps_lock(intel_dp); |
e39b999a | 1998 | |
453c5420 | 1999 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2000 | pp |= EDP_BLC_ENABLE; |
453c5420 | 2001 | |
bf13e81b | 2002 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2003 | |
2004 | I915_WRITE(pp_ctrl_reg, pp); | |
2005 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 2006 | |
773538e8 | 2007 | pps_unlock(intel_dp); |
32f9d658 ZW |
2008 | } |
2009 | ||
1250d107 JN |
2010 | /* Enable backlight PWM and backlight PP control. */ |
2011 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
2012 | { | |
2013 | if (!is_edp(intel_dp)) | |
2014 | return; | |
2015 | ||
2016 | DRM_DEBUG_KMS("\n"); | |
2017 | ||
2018 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
2019 | _intel_edp_backlight_on(intel_dp); | |
2020 | } | |
2021 | ||
2022 | /* Disable backlight in the panel power control. */ | |
2023 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 2024 | { |
30add22d | 2025 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
2026 | struct drm_i915_private *dev_priv = dev->dev_private; |
2027 | u32 pp; | |
453c5420 | 2028 | u32 pp_ctrl_reg; |
32f9d658 | 2029 | |
f01eca2e KP |
2030 | if (!is_edp(intel_dp)) |
2031 | return; | |
2032 | ||
773538e8 | 2033 | pps_lock(intel_dp); |
e39b999a | 2034 | |
453c5420 | 2035 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2036 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 2037 | |
bf13e81b | 2038 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2039 | |
2040 | I915_WRITE(pp_ctrl_reg, pp); | |
2041 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 2042 | |
773538e8 | 2043 | pps_unlock(intel_dp); |
e39b999a VS |
2044 | |
2045 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 2046 | edp_wait_backlight_off(intel_dp); |
1250d107 | 2047 | } |
f7d2323c | 2048 | |
1250d107 JN |
2049 | /* Disable backlight PP control and backlight PWM. */ |
2050 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
2051 | { | |
2052 | if (!is_edp(intel_dp)) | |
2053 | return; | |
2054 | ||
2055 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 2056 | |
1250d107 | 2057 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 2058 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 2059 | } |
a4fc5ed6 | 2060 | |
73580fb7 JN |
2061 | /* |
2062 | * Hook for controlling the panel power control backlight through the bl_power | |
2063 | * sysfs attribute. Take care to handle multiple calls. | |
2064 | */ | |
2065 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
2066 | bool enable) | |
2067 | { | |
2068 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
2069 | bool is_enabled; |
2070 | ||
773538e8 | 2071 | pps_lock(intel_dp); |
e39b999a | 2072 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 2073 | pps_unlock(intel_dp); |
73580fb7 JN |
2074 | |
2075 | if (is_enabled == enable) | |
2076 | return; | |
2077 | ||
23ba9373 JN |
2078 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2079 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2080 | |
2081 | if (enable) | |
2082 | _intel_edp_backlight_on(intel_dp); | |
2083 | else | |
2084 | _intel_edp_backlight_off(intel_dp); | |
2085 | } | |
2086 | ||
2bd2ad64 | 2087 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2088 | { |
da63a9f2 PZ |
2089 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2090 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2091 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2092 | struct drm_i915_private *dev_priv = dev->dev_private; |
2093 | u32 dpa_ctl; | |
2094 | ||
2bd2ad64 DV |
2095 | assert_pipe_disabled(dev_priv, |
2096 | to_intel_crtc(crtc)->pipe); | |
2097 | ||
d240f20f JB |
2098 | DRM_DEBUG_KMS("\n"); |
2099 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2100 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2101 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2102 | ||
2103 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2104 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2105 | * enable bits here to ensure that we don't enable too much. */ | |
2106 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2107 | intel_dp->DP |= DP_PLL_ENABLE; | |
2108 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2109 | POSTING_READ(DP_A); |
2110 | udelay(200); | |
d240f20f JB |
2111 | } |
2112 | ||
2bd2ad64 | 2113 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2114 | { |
da63a9f2 PZ |
2115 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2116 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2117 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2118 | struct drm_i915_private *dev_priv = dev->dev_private; |
2119 | u32 dpa_ctl; | |
2120 | ||
2bd2ad64 DV |
2121 | assert_pipe_disabled(dev_priv, |
2122 | to_intel_crtc(crtc)->pipe); | |
2123 | ||
d240f20f | 2124 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2125 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2126 | "dp pll off, should be on\n"); | |
2127 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2128 | ||
2129 | /* We can't rely on the value tracked for the DP register in | |
2130 | * intel_dp->DP because link_down must not change that (otherwise link | |
2131 | * re-training will fail. */ | |
298b0b39 | 2132 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2133 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2134 | POSTING_READ(DP_A); |
d240f20f JB |
2135 | udelay(200); |
2136 | } | |
2137 | ||
c7ad3810 | 2138 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2139 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2140 | { |
2141 | int ret, i; | |
2142 | ||
2143 | /* Should have a valid DPCD by this point */ | |
2144 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2145 | return; | |
2146 | ||
2147 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2148 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2149 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2150 | } else { |
2151 | /* | |
2152 | * When turning on, we need to retry for 1ms to give the sink | |
2153 | * time to wake up. | |
2154 | */ | |
2155 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2156 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2157 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2158 | if (ret == 1) |
2159 | break; | |
2160 | msleep(1); | |
2161 | } | |
2162 | } | |
f9cac721 JN |
2163 | |
2164 | if (ret != 1) | |
2165 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2166 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2167 | } |
2168 | ||
19d8fe15 DV |
2169 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2170 | enum pipe *pipe) | |
d240f20f | 2171 | { |
19d8fe15 | 2172 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2173 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2174 | struct drm_device *dev = encoder->base.dev; |
2175 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2176 | enum intel_display_power_domain power_domain; |
2177 | u32 tmp; | |
2178 | ||
2179 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2180 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2181 | return false; |
2182 | ||
2183 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2184 | |
2185 | if (!(tmp & DP_PORT_EN)) | |
2186 | return false; | |
2187 | ||
bc7d38a4 | 2188 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 2189 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
2190 | } else if (IS_CHERRYVIEW(dev)) { |
2191 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 2192 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
2193 | *pipe = PORT_TO_PIPE(tmp); |
2194 | } else { | |
2195 | u32 trans_sel; | |
2196 | u32 trans_dp; | |
2197 | int i; | |
2198 | ||
2199 | switch (intel_dp->output_reg) { | |
2200 | case PCH_DP_B: | |
2201 | trans_sel = TRANS_DP_PORT_SEL_B; | |
2202 | break; | |
2203 | case PCH_DP_C: | |
2204 | trans_sel = TRANS_DP_PORT_SEL_C; | |
2205 | break; | |
2206 | case PCH_DP_D: | |
2207 | trans_sel = TRANS_DP_PORT_SEL_D; | |
2208 | break; | |
2209 | default: | |
2210 | return true; | |
2211 | } | |
2212 | ||
055e393f | 2213 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
2214 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
2215 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
2216 | *pipe = i; | |
2217 | return true; | |
2218 | } | |
2219 | } | |
19d8fe15 | 2220 | |
4a0833ec DV |
2221 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2222 | intel_dp->output_reg); | |
2223 | } | |
d240f20f | 2224 | |
19d8fe15 DV |
2225 | return true; |
2226 | } | |
d240f20f | 2227 | |
045ac3b5 | 2228 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2229 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2230 | { |
2231 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2232 | u32 tmp, flags = 0; |
63000ef6 XZ |
2233 | struct drm_device *dev = encoder->base.dev; |
2234 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2235 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2236 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2237 | int dotclock; |
045ac3b5 | 2238 | |
9ed109a7 | 2239 | tmp = I915_READ(intel_dp->output_reg); |
9fcb1704 JN |
2240 | |
2241 | pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A; | |
9ed109a7 | 2242 | |
63000ef6 | 2243 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
2244 | if (tmp & DP_SYNC_HS_HIGH) |
2245 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2246 | else | |
2247 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2248 | |
63000ef6 XZ |
2249 | if (tmp & DP_SYNC_VS_HIGH) |
2250 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2251 | else | |
2252 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2253 | } else { | |
2254 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
2255 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
2256 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2257 | else | |
2258 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2259 | |
63000ef6 XZ |
2260 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
2261 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2262 | else | |
2263 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2264 | } | |
045ac3b5 | 2265 | |
2d112de7 | 2266 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2267 | |
8c875fca VS |
2268 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2269 | tmp & DP_COLOR_RANGE_16_235) | |
2270 | pipe_config->limited_color_range = true; | |
2271 | ||
eb14cb74 VS |
2272 | pipe_config->has_dp_encoder = true; |
2273 | ||
2274 | intel_dp_get_m_n(crtc, pipe_config); | |
2275 | ||
18442d08 | 2276 | if (port == PORT_A) { |
f1f644dc JB |
2277 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2278 | pipe_config->port_clock = 162000; | |
2279 | else | |
2280 | pipe_config->port_clock = 270000; | |
2281 | } | |
18442d08 VS |
2282 | |
2283 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2284 | &pipe_config->dp_m_n); | |
2285 | ||
2286 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2287 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2288 | ||
2d112de7 | 2289 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2290 | |
c6cd2ee2 JN |
2291 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2292 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2293 | /* | |
2294 | * This is a big fat ugly hack. | |
2295 | * | |
2296 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2297 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2298 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2299 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2300 | * max, not what it tells us to use. | |
2301 | * | |
2302 | * Note: This will still be broken if the eDP panel is not lit | |
2303 | * up by the BIOS, and thus we can't get the mode at module | |
2304 | * load. | |
2305 | */ | |
2306 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2307 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2308 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2309 | } | |
045ac3b5 JB |
2310 | } |
2311 | ||
e8cb4558 | 2312 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2313 | { |
e8cb4558 | 2314 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2315 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2316 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2317 | ||
6e3c9717 | 2318 | if (crtc->config->has_audio) |
495a5bb8 | 2319 | intel_audio_codec_disable(encoder); |
6cb49835 | 2320 | |
b32c6f48 RV |
2321 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2322 | intel_psr_disable(intel_dp); | |
2323 | ||
6cb49835 DV |
2324 | /* Make sure the panel is off before trying to change the mode. But also |
2325 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2326 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2327 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2328 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2329 | intel_edp_panel_off(intel_dp); |
3739850b | 2330 | |
08aff3fe VS |
2331 | /* disable the port before the pipe on g4x */ |
2332 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2333 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2334 | } |
2335 | ||
08aff3fe | 2336 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2337 | { |
2bd2ad64 | 2338 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2339 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2340 | |
49277c31 | 2341 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2342 | if (port == PORT_A) |
2343 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2344 | } |
2345 | ||
2346 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2347 | { | |
2348 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2349 | ||
2350 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2351 | } |
2352 | ||
580d3811 VS |
2353 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2354 | { | |
2355 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2356 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2357 | struct drm_device *dev = encoder->base.dev; | |
2358 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2359 | struct intel_crtc *intel_crtc = | |
2360 | to_intel_crtc(encoder->base.crtc); | |
2361 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2362 | enum pipe pipe = intel_crtc->pipe; | |
2363 | u32 val; | |
2364 | ||
2365 | intel_dp_link_down(intel_dp); | |
2366 | ||
2367 | mutex_lock(&dev_priv->dpio_lock); | |
2368 | ||
2369 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2370 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2371 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2372 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2373 | |
97fd4d5c VS |
2374 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2375 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2376 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2377 | ||
2378 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2379 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2380 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2381 | ||
2382 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2383 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2384 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2385 | |
2386 | mutex_unlock(&dev_priv->dpio_lock); | |
2387 | } | |
2388 | ||
7b13b58a VS |
2389 | static void |
2390 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2391 | uint32_t *DP, | |
2392 | uint8_t dp_train_pat) | |
2393 | { | |
2394 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2395 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2396 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2397 | enum port port = intel_dig_port->port; | |
2398 | ||
2399 | if (HAS_DDI(dev)) { | |
2400 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2401 | ||
2402 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2403 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2404 | else | |
2405 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2406 | ||
2407 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2408 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2409 | case DP_TRAINING_PATTERN_DISABLE: | |
2410 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2411 | ||
2412 | break; | |
2413 | case DP_TRAINING_PATTERN_1: | |
2414 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2415 | break; | |
2416 | case DP_TRAINING_PATTERN_2: | |
2417 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2418 | break; | |
2419 | case DP_TRAINING_PATTERN_3: | |
2420 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2421 | break; | |
2422 | } | |
2423 | I915_WRITE(DP_TP_CTL(port), temp); | |
2424 | ||
2425 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2426 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2427 | ||
2428 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2429 | case DP_TRAINING_PATTERN_DISABLE: | |
2430 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2431 | break; | |
2432 | case DP_TRAINING_PATTERN_1: | |
2433 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2434 | break; | |
2435 | case DP_TRAINING_PATTERN_2: | |
2436 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2437 | break; | |
2438 | case DP_TRAINING_PATTERN_3: | |
2439 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2440 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2441 | break; | |
2442 | } | |
2443 | ||
2444 | } else { | |
2445 | if (IS_CHERRYVIEW(dev)) | |
2446 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2447 | else | |
2448 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2449 | ||
2450 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2451 | case DP_TRAINING_PATTERN_DISABLE: | |
2452 | *DP |= DP_LINK_TRAIN_OFF; | |
2453 | break; | |
2454 | case DP_TRAINING_PATTERN_1: | |
2455 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2456 | break; | |
2457 | case DP_TRAINING_PATTERN_2: | |
2458 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2459 | break; | |
2460 | case DP_TRAINING_PATTERN_3: | |
2461 | if (IS_CHERRYVIEW(dev)) { | |
2462 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2463 | } else { | |
2464 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2465 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2466 | } | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | } | |
2471 | ||
2472 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2473 | { | |
2474 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2475 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2476 | ||
7b13b58a VS |
2477 | /* enable with pattern 1 (as per spec) */ |
2478 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2479 | DP_TRAINING_PATTERN_1); | |
2480 | ||
2481 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2482 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2483 | |
2484 | /* | |
2485 | * Magic for VLV/CHV. We _must_ first set up the register | |
2486 | * without actually enabling the port, and then do another | |
2487 | * write to enable the port. Otherwise link training will | |
2488 | * fail when the power sequencer is freshly used for this port. | |
2489 | */ | |
2490 | intel_dp->DP |= DP_PORT_EN; | |
2491 | ||
2492 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2493 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2494 | } |
2495 | ||
e8cb4558 | 2496 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2497 | { |
e8cb4558 DV |
2498 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2499 | struct drm_device *dev = encoder->base.dev; | |
2500 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2501 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2502 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
9b6de0a1 | 2503 | unsigned int lane_mask = 0x0; |
5d613501 | 2504 | |
0c33d8d7 DV |
2505 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2506 | return; | |
5d613501 | 2507 | |
093e3f13 VS |
2508 | pps_lock(intel_dp); |
2509 | ||
2510 | if (IS_VALLEYVIEW(dev)) | |
2511 | vlv_init_panel_power_sequencer(intel_dp); | |
2512 | ||
7b13b58a | 2513 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2514 | |
2515 | edp_panel_vdd_on(intel_dp); | |
2516 | edp_panel_on(intel_dp); | |
2517 | edp_panel_vdd_off(intel_dp, true); | |
2518 | ||
2519 | pps_unlock(intel_dp); | |
2520 | ||
61234fa5 | 2521 | if (IS_VALLEYVIEW(dev)) |
9b6de0a1 VS |
2522 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp), |
2523 | lane_mask); | |
61234fa5 | 2524 | |
f01eca2e | 2525 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2526 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2527 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2528 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2529 | |
6e3c9717 | 2530 | if (crtc->config->has_audio) { |
c1dec79a JN |
2531 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2532 | pipe_name(crtc->pipe)); | |
2533 | intel_audio_codec_enable(encoder); | |
2534 | } | |
ab1f90f9 | 2535 | } |
89b667f8 | 2536 | |
ecff4f3b JN |
2537 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2538 | { | |
828f5c6e JN |
2539 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2540 | ||
ecff4f3b | 2541 | intel_enable_dp(encoder); |
4be73780 | 2542 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2543 | } |
89b667f8 | 2544 | |
ab1f90f9 JN |
2545 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2546 | { | |
828f5c6e JN |
2547 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2548 | ||
4be73780 | 2549 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2550 | intel_psr_enable(intel_dp); |
d240f20f JB |
2551 | } |
2552 | ||
ecff4f3b | 2553 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2554 | { |
2555 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2556 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2557 | ||
8ac33ed3 DV |
2558 | intel_dp_prepare(encoder); |
2559 | ||
d41f1efb DV |
2560 | /* Only ilk+ has port A */ |
2561 | if (dport->port == PORT_A) { | |
2562 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2563 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2564 | } |
ab1f90f9 JN |
2565 | } |
2566 | ||
83b84597 VS |
2567 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2568 | { | |
2569 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2570 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2571 | enum pipe pipe = intel_dp->pps_pipe; | |
2572 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2573 | ||
2574 | edp_panel_vdd_off_sync(intel_dp); | |
2575 | ||
2576 | /* | |
2577 | * VLV seems to get confused when multiple power seqeuencers | |
2578 | * have the same port selected (even if only one has power/vdd | |
2579 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2580 | * CHV on the other hand doesn't seem to mind having the same port | |
2581 | * selected in multiple power seqeuencers, but let's clear the | |
2582 | * port select always when logically disconnecting a power sequencer | |
2583 | * from a port. | |
2584 | */ | |
2585 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2586 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2587 | I915_WRITE(pp_on_reg, 0); | |
2588 | POSTING_READ(pp_on_reg); | |
2589 | ||
2590 | intel_dp->pps_pipe = INVALID_PIPE; | |
2591 | } | |
2592 | ||
a4a5d2f8 VS |
2593 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2594 | enum pipe pipe) | |
2595 | { | |
2596 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2597 | struct intel_encoder *encoder; | |
2598 | ||
2599 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2600 | ||
ac3c12e4 VS |
2601 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2602 | return; | |
2603 | ||
a4a5d2f8 VS |
2604 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2605 | base.head) { | |
2606 | struct intel_dp *intel_dp; | |
773538e8 | 2607 | enum port port; |
a4a5d2f8 VS |
2608 | |
2609 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2610 | continue; | |
2611 | ||
2612 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2613 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2614 | |
2615 | if (intel_dp->pps_pipe != pipe) | |
2616 | continue; | |
2617 | ||
2618 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2619 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2620 | |
034e43c6 VS |
2621 | WARN(encoder->connectors_active, |
2622 | "stealing pipe %c power sequencer from active eDP port %c\n", | |
2623 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2624 | |
a4a5d2f8 | 2625 | /* make sure vdd is off before we steal it */ |
83b84597 | 2626 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2627 | } |
2628 | } | |
2629 | ||
2630 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2631 | { | |
2632 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2633 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2634 | struct drm_device *dev = encoder->base.dev; | |
2635 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2636 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2637 | |
2638 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2639 | ||
093e3f13 VS |
2640 | if (!is_edp(intel_dp)) |
2641 | return; | |
2642 | ||
a4a5d2f8 VS |
2643 | if (intel_dp->pps_pipe == crtc->pipe) |
2644 | return; | |
2645 | ||
2646 | /* | |
2647 | * If another power sequencer was being used on this | |
2648 | * port previously make sure to turn off vdd there while | |
2649 | * we still have control of it. | |
2650 | */ | |
2651 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2652 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2653 | |
2654 | /* | |
2655 | * We may be stealing the power | |
2656 | * sequencer from another port. | |
2657 | */ | |
2658 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2659 | ||
2660 | /* now it's all ours */ | |
2661 | intel_dp->pps_pipe = crtc->pipe; | |
2662 | ||
2663 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2664 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2665 | ||
2666 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2667 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2668 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2669 | } |
2670 | ||
ab1f90f9 | 2671 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2672 | { |
2bd2ad64 | 2673 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2674 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2675 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2676 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2677 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2678 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2679 | int pipe = intel_crtc->pipe; |
2680 | u32 val; | |
a4fc5ed6 | 2681 | |
ab1f90f9 | 2682 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2683 | |
ab3c759a | 2684 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2685 | val = 0; |
2686 | if (pipe) | |
2687 | val |= (1<<21); | |
2688 | else | |
2689 | val &= ~(1<<21); | |
2690 | val |= 0x001000c4; | |
ab3c759a CML |
2691 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2692 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2693 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2694 | |
ab1f90f9 JN |
2695 | mutex_unlock(&dev_priv->dpio_lock); |
2696 | ||
2697 | intel_enable_dp(encoder); | |
89b667f8 JB |
2698 | } |
2699 | ||
ecff4f3b | 2700 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2701 | { |
2702 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2703 | struct drm_device *dev = encoder->base.dev; | |
2704 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2705 | struct intel_crtc *intel_crtc = |
2706 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2707 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2708 | int pipe = intel_crtc->pipe; |
89b667f8 | 2709 | |
8ac33ed3 DV |
2710 | intel_dp_prepare(encoder); |
2711 | ||
89b667f8 | 2712 | /* Program Tx lane resets to default */ |
0980a60f | 2713 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2714 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2715 | DPIO_PCS_TX_LANE2_RESET | |
2716 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2717 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2718 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2719 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2720 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2721 | DPIO_PCS_CLK_SOFT_RESET); | |
2722 | ||
2723 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2724 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2725 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2726 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2727 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2728 | } |
2729 | ||
e4a1d846 CML |
2730 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2731 | { | |
2732 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2733 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2734 | struct drm_device *dev = encoder->base.dev; | |
2735 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2736 | struct intel_crtc *intel_crtc = |
2737 | to_intel_crtc(encoder->base.crtc); | |
2738 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2739 | int pipe = intel_crtc->pipe; | |
2e523e98 | 2740 | int data, i, stagger; |
949c1d43 | 2741 | u32 val; |
e4a1d846 | 2742 | |
e4a1d846 | 2743 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 | 2744 | |
570e2a74 VS |
2745 | /* allow hardware to manage TX FIFO reset source */ |
2746 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2747 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2748 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2749 | ||
2750 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2751 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2752 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2753 | ||
949c1d43 | 2754 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2755 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2756 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2757 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2758 | ||
2759 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2760 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2761 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2762 | ||
2763 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2764 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2765 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2766 | |
97fd4d5c | 2767 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2768 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2769 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2770 | |
2771 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 | 2772 | for (i = 0; i < 4; i++) { |
e4a1d846 CML |
2773 | /* Set the upar bit */ |
2774 | data = (i == 1) ? 0x0 : 0x1; | |
2775 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2776 | data << DPIO_UPAR_SHIFT); | |
2777 | } | |
2778 | ||
2779 | /* Data lane stagger programming */ | |
2e523e98 VS |
2780 | if (intel_crtc->config->port_clock > 270000) |
2781 | stagger = 0x18; | |
2782 | else if (intel_crtc->config->port_clock > 135000) | |
2783 | stagger = 0xd; | |
2784 | else if (intel_crtc->config->port_clock > 67500) | |
2785 | stagger = 0x7; | |
2786 | else if (intel_crtc->config->port_clock > 33750) | |
2787 | stagger = 0x4; | |
2788 | else | |
2789 | stagger = 0x2; | |
2790 | ||
2791 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2792 | val |= DPIO_TX2_STAGGER_MASK(0x1f); | |
2793 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2794 | ||
2795 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2796 | val |= DPIO_TX2_STAGGER_MASK(0x1f); | |
2797 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2798 | ||
2799 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch), | |
2800 | DPIO_LANESTAGGER_STRAP(stagger) | | |
2801 | DPIO_LANESTAGGER_STRAP_OVRD | | |
2802 | DPIO_TX1_STAGGER_MASK(0x1f) | | |
2803 | DPIO_TX1_STAGGER_MULT(6) | | |
2804 | DPIO_TX2_STAGGER_MULT(0)); | |
2805 | ||
2806 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch), | |
2807 | DPIO_LANESTAGGER_STRAP(stagger) | | |
2808 | DPIO_LANESTAGGER_STRAP_OVRD | | |
2809 | DPIO_TX1_STAGGER_MASK(0x1f) | | |
2810 | DPIO_TX1_STAGGER_MULT(7) | | |
2811 | DPIO_TX2_STAGGER_MULT(5)); | |
e4a1d846 CML |
2812 | |
2813 | mutex_unlock(&dev_priv->dpio_lock); | |
2814 | ||
e4a1d846 | 2815 | intel_enable_dp(encoder); |
e4a1d846 CML |
2816 | } |
2817 | ||
9197c88b VS |
2818 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2819 | { | |
2820 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2821 | struct drm_device *dev = encoder->base.dev; | |
2822 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2823 | struct intel_crtc *intel_crtc = | |
2824 | to_intel_crtc(encoder->base.crtc); | |
2825 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2826 | enum pipe pipe = intel_crtc->pipe; | |
2827 | u32 val; | |
2828 | ||
625695f8 VS |
2829 | intel_dp_prepare(encoder); |
2830 | ||
9197c88b VS |
2831 | mutex_lock(&dev_priv->dpio_lock); |
2832 | ||
b9e5ac3c VS |
2833 | /* program left/right clock distribution */ |
2834 | if (pipe != PIPE_B) { | |
2835 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2836 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2837 | if (ch == DPIO_CH0) | |
2838 | val |= CHV_BUFLEFTENA1_FORCE; | |
2839 | if (ch == DPIO_CH1) | |
2840 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2841 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2842 | } else { | |
2843 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2844 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2845 | if (ch == DPIO_CH0) | |
2846 | val |= CHV_BUFLEFTENA2_FORCE; | |
2847 | if (ch == DPIO_CH1) | |
2848 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2849 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2850 | } | |
2851 | ||
9197c88b VS |
2852 | /* program clock channel usage */ |
2853 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2854 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2855 | if (pipe != PIPE_B) | |
2856 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2857 | else | |
2858 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2859 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2860 | ||
2861 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2862 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2863 | if (pipe != PIPE_B) | |
2864 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2865 | else | |
2866 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2867 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2868 | ||
2869 | /* | |
2870 | * This a a bit weird since generally CL | |
2871 | * matches the pipe, but here we need to | |
2872 | * pick the CL based on the port. | |
2873 | */ | |
2874 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2875 | if (pipe != PIPE_B) | |
2876 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2877 | else | |
2878 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2879 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2880 | ||
2881 | mutex_unlock(&dev_priv->dpio_lock); | |
2882 | } | |
2883 | ||
a4fc5ed6 | 2884 | /* |
df0c237d JB |
2885 | * Native read with retry for link status and receiver capability reads for |
2886 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2887 | * |
2888 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2889 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2890 | */ |
9d1a1031 JN |
2891 | static ssize_t |
2892 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2893 | void *buffer, size_t size) | |
a4fc5ed6 | 2894 | { |
9d1a1031 JN |
2895 | ssize_t ret; |
2896 | int i; | |
61da5fab | 2897 | |
f6a19066 VS |
2898 | /* |
2899 | * Sometime we just get the same incorrect byte repeated | |
2900 | * over the entire buffer. Doing just one throw away read | |
2901 | * initially seems to "solve" it. | |
2902 | */ | |
2903 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
2904 | ||
61da5fab | 2905 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2906 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2907 | if (ret == size) | |
2908 | return ret; | |
61da5fab JB |
2909 | msleep(1); |
2910 | } | |
a4fc5ed6 | 2911 | |
9d1a1031 | 2912 | return ret; |
a4fc5ed6 KP |
2913 | } |
2914 | ||
2915 | /* | |
2916 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2917 | * link status information | |
2918 | */ | |
2919 | static bool | |
93f62dad | 2920 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2921 | { |
9d1a1031 JN |
2922 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2923 | DP_LANE0_1_STATUS, | |
2924 | link_status, | |
2925 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2926 | } |
2927 | ||
1100244e | 2928 | /* These are source-specific values. */ |
a4fc5ed6 | 2929 | static uint8_t |
1a2eb460 | 2930 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2931 | { |
30add22d | 2932 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 2933 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 2934 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2935 | |
9314726b VK |
2936 | if (IS_BROXTON(dev)) |
2937 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
2938 | else if (INTEL_INFO(dev)->gen >= 9) { | |
9e458034 | 2939 | if (dev_priv->edp_low_vswing && port == PORT_A) |
7ad14a29 | 2940 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
5a9d1f1a | 2941 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 2942 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 2943 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2944 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2945 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2946 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2947 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2948 | else |
bd60018a | 2949 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2950 | } |
2951 | ||
2952 | static uint8_t | |
2953 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2954 | { | |
30add22d | 2955 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2956 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2957 | |
5a9d1f1a DL |
2958 | if (INTEL_INFO(dev)->gen >= 9) { |
2959 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2960 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
2961 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2962 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2963 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2964 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2965 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
2966 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
2967 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
2968 | default: |
2969 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
2970 | } | |
2971 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 2972 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2973 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2974 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2975 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2976 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2977 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2978 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2979 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2980 | default: |
bd60018a | 2981 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2982 | } |
e2fa6fba P |
2983 | } else if (IS_VALLEYVIEW(dev)) { |
2984 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2985 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2986 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2987 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2988 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2989 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2990 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2991 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2992 | default: |
bd60018a | 2993 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2994 | } |
bc7d38a4 | 2995 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2996 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2997 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2998 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2999 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3000 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3001 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 3002 | default: |
bd60018a | 3003 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
3004 | } |
3005 | } else { | |
3006 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
3007 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3008 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3009 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3010 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3011 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3012 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3013 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 3014 | default: |
bd60018a | 3015 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 3016 | } |
a4fc5ed6 KP |
3017 | } |
3018 | } | |
3019 | ||
5829975c | 3020 | static uint32_t vlv_signal_levels(struct intel_dp *intel_dp) |
e2fa6fba P |
3021 | { |
3022 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3023 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3024 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
3025 | struct intel_crtc *intel_crtc = |
3026 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
3027 | unsigned long demph_reg_value, preemph_reg_value, |
3028 | uniqtranscale_reg_value; | |
3029 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 3030 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 3031 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
3032 | |
3033 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3034 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
3035 | preemph_reg_value = 0x0004000; |
3036 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3037 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3038 | demph_reg_value = 0x2B405555; |
3039 | uniqtranscale_reg_value = 0x552AB83A; | |
3040 | break; | |
bd60018a | 3041 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3042 | demph_reg_value = 0x2B404040; |
3043 | uniqtranscale_reg_value = 0x5548B83A; | |
3044 | break; | |
bd60018a | 3045 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3046 | demph_reg_value = 0x2B245555; |
3047 | uniqtranscale_reg_value = 0x5560B83A; | |
3048 | break; | |
bd60018a | 3049 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
3050 | demph_reg_value = 0x2B405555; |
3051 | uniqtranscale_reg_value = 0x5598DA3A; | |
3052 | break; | |
3053 | default: | |
3054 | return 0; | |
3055 | } | |
3056 | break; | |
bd60018a | 3057 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
3058 | preemph_reg_value = 0x0002000; |
3059 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3060 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3061 | demph_reg_value = 0x2B404040; |
3062 | uniqtranscale_reg_value = 0x5552B83A; | |
3063 | break; | |
bd60018a | 3064 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3065 | demph_reg_value = 0x2B404848; |
3066 | uniqtranscale_reg_value = 0x5580B83A; | |
3067 | break; | |
bd60018a | 3068 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3069 | demph_reg_value = 0x2B404040; |
3070 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3071 | break; | |
3072 | default: | |
3073 | return 0; | |
3074 | } | |
3075 | break; | |
bd60018a | 3076 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
3077 | preemph_reg_value = 0x0000000; |
3078 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3079 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3080 | demph_reg_value = 0x2B305555; |
3081 | uniqtranscale_reg_value = 0x5570B83A; | |
3082 | break; | |
bd60018a | 3083 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3084 | demph_reg_value = 0x2B2B4040; |
3085 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3086 | break; | |
3087 | default: | |
3088 | return 0; | |
3089 | } | |
3090 | break; | |
bd60018a | 3091 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
3092 | preemph_reg_value = 0x0006000; |
3093 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3094 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3095 | demph_reg_value = 0x1B405555; |
3096 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3097 | break; | |
3098 | default: | |
3099 | return 0; | |
3100 | } | |
3101 | break; | |
3102 | default: | |
3103 | return 0; | |
3104 | } | |
3105 | ||
0980a60f | 3106 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
3107 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3108 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
3109 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3110 | uniqtranscale_reg_value); |
ab3c759a CML |
3111 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3112 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3113 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3114 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3115 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3116 | |
3117 | return 0; | |
3118 | } | |
3119 | ||
5829975c | 3120 | static uint32_t chv_signal_levels(struct intel_dp *intel_dp) |
e4a1d846 CML |
3121 | { |
3122 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3123 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3124 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3125 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3126 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3127 | uint8_t train_set = intel_dp->train_set[0]; |
3128 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3129 | enum pipe pipe = intel_crtc->pipe; |
3130 | int i; | |
e4a1d846 CML |
3131 | |
3132 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3133 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3134 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3135 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3136 | deemph_reg_value = 128; |
3137 | margin_reg_value = 52; | |
3138 | break; | |
bd60018a | 3139 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3140 | deemph_reg_value = 128; |
3141 | margin_reg_value = 77; | |
3142 | break; | |
bd60018a | 3143 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3144 | deemph_reg_value = 128; |
3145 | margin_reg_value = 102; | |
3146 | break; | |
bd60018a | 3147 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3148 | deemph_reg_value = 128; |
3149 | margin_reg_value = 154; | |
3150 | /* FIXME extra to set for 1200 */ | |
3151 | break; | |
3152 | default: | |
3153 | return 0; | |
3154 | } | |
3155 | break; | |
bd60018a | 3156 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3157 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3158 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3159 | deemph_reg_value = 85; |
3160 | margin_reg_value = 78; | |
3161 | break; | |
bd60018a | 3162 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3163 | deemph_reg_value = 85; |
3164 | margin_reg_value = 116; | |
3165 | break; | |
bd60018a | 3166 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3167 | deemph_reg_value = 85; |
3168 | margin_reg_value = 154; | |
3169 | break; | |
3170 | default: | |
3171 | return 0; | |
3172 | } | |
3173 | break; | |
bd60018a | 3174 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3175 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3176 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3177 | deemph_reg_value = 64; |
3178 | margin_reg_value = 104; | |
3179 | break; | |
bd60018a | 3180 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3181 | deemph_reg_value = 64; |
3182 | margin_reg_value = 154; | |
3183 | break; | |
3184 | default: | |
3185 | return 0; | |
3186 | } | |
3187 | break; | |
bd60018a | 3188 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3189 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3190 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3191 | deemph_reg_value = 43; |
3192 | margin_reg_value = 154; | |
3193 | break; | |
3194 | default: | |
3195 | return 0; | |
3196 | } | |
3197 | break; | |
3198 | default: | |
3199 | return 0; | |
3200 | } | |
3201 | ||
3202 | mutex_lock(&dev_priv->dpio_lock); | |
3203 | ||
3204 | /* Clear calc init */ | |
1966e59e VS |
3205 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3206 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3207 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3208 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3209 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3210 | ||
3211 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3212 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3213 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3214 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3215 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3216 | |
a02ef3c7 VS |
3217 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3218 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3219 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3220 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3221 | ||
3222 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3223 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3224 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3225 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3226 | ||
e4a1d846 | 3227 | /* Program swing deemph */ |
f72df8db VS |
3228 | for (i = 0; i < 4; i++) { |
3229 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3230 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3231 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3232 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3233 | } | |
e4a1d846 CML |
3234 | |
3235 | /* Program swing margin */ | |
f72df8db VS |
3236 | for (i = 0; i < 4; i++) { |
3237 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3238 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3239 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3240 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3241 | } | |
e4a1d846 CML |
3242 | |
3243 | /* Disable unique transition scale */ | |
f72df8db VS |
3244 | for (i = 0; i < 4; i++) { |
3245 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3246 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3247 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3248 | } | |
e4a1d846 CML |
3249 | |
3250 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3251 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3252 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3253 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3254 | |
3255 | /* | |
3256 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3257 | * for ch1. Might be a typo in the doc. | |
3258 | * For now, for this unique transition scale selection, set bit | |
3259 | * 27 for ch0 and ch1. | |
3260 | */ | |
f72df8db VS |
3261 | for (i = 0; i < 4; i++) { |
3262 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3263 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3264 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3265 | } | |
e4a1d846 | 3266 | |
f72df8db VS |
3267 | for (i = 0; i < 4; i++) { |
3268 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3269 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3270 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3271 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3272 | } | |
e4a1d846 CML |
3273 | } |
3274 | ||
3275 | /* Start swing calculation */ | |
1966e59e VS |
3276 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3277 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3278 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3279 | ||
3280 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3281 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3282 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3283 | |
3284 | /* LRC Bypass */ | |
3285 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3286 | val |= DPIO_LRC_BYPASS; | |
3287 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3288 | ||
3289 | mutex_unlock(&dev_priv->dpio_lock); | |
3290 | ||
3291 | return 0; | |
3292 | } | |
3293 | ||
a4fc5ed6 | 3294 | static void |
0301b3ac JN |
3295 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3296 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3297 | { |
3298 | uint8_t v = 0; | |
3299 | uint8_t p = 0; | |
3300 | int lane; | |
1a2eb460 KP |
3301 | uint8_t voltage_max; |
3302 | uint8_t preemph_max; | |
a4fc5ed6 | 3303 | |
33a34e4e | 3304 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3305 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3306 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3307 | |
3308 | if (this_v > v) | |
3309 | v = this_v; | |
3310 | if (this_p > p) | |
3311 | p = this_p; | |
3312 | } | |
3313 | ||
1a2eb460 | 3314 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3315 | if (v >= voltage_max) |
3316 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3317 | |
1a2eb460 KP |
3318 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3319 | if (p >= preemph_max) | |
3320 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3321 | |
3322 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3323 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3324 | } |
3325 | ||
3326 | static uint32_t | |
5829975c | 3327 | gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3328 | { |
3cf2efb1 | 3329 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3330 | |
3cf2efb1 | 3331 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3332 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3333 | default: |
3334 | signal_levels |= DP_VOLTAGE_0_4; | |
3335 | break; | |
bd60018a | 3336 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3337 | signal_levels |= DP_VOLTAGE_0_6; |
3338 | break; | |
bd60018a | 3339 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3340 | signal_levels |= DP_VOLTAGE_0_8; |
3341 | break; | |
bd60018a | 3342 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3343 | signal_levels |= DP_VOLTAGE_1_2; |
3344 | break; | |
3345 | } | |
3cf2efb1 | 3346 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3347 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3348 | default: |
3349 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3350 | break; | |
bd60018a | 3351 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3352 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3353 | break; | |
bd60018a | 3354 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3355 | signal_levels |= DP_PRE_EMPHASIS_6; |
3356 | break; | |
bd60018a | 3357 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3358 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3359 | break; | |
3360 | } | |
3361 | return signal_levels; | |
3362 | } | |
3363 | ||
e3421a18 ZW |
3364 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3365 | static uint32_t | |
5829975c | 3366 | gen6_edp_signal_levels(uint8_t train_set) |
e3421a18 | 3367 | { |
3c5a62b5 YL |
3368 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3369 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3370 | switch (signal_levels) { | |
bd60018a SJ |
3371 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3372 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3373 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3374 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3375 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3376 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3377 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3378 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3379 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3380 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3381 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3382 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3383 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3384 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3385 | default: |
3c5a62b5 YL |
3386 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3387 | "0x%x\n", signal_levels); | |
3388 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3389 | } |
3390 | } | |
3391 | ||
1a2eb460 KP |
3392 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3393 | static uint32_t | |
5829975c | 3394 | gen7_edp_signal_levels(uint8_t train_set) |
1a2eb460 KP |
3395 | { |
3396 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3397 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3398 | switch (signal_levels) { | |
bd60018a | 3399 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3400 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3401 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3402 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3403 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3404 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3405 | ||
bd60018a | 3406 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3407 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3408 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3409 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3410 | ||
bd60018a | 3411 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3412 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3413 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3414 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3415 | ||
3416 | default: | |
3417 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3418 | "0x%x\n", signal_levels); | |
3419 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3420 | } | |
3421 | } | |
3422 | ||
d6c0d722 PZ |
3423 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3424 | static uint32_t | |
5829975c | 3425 | hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3426 | { |
d6c0d722 PZ |
3427 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3428 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3429 | switch (signal_levels) { | |
bd60018a | 3430 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3431 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3432 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3433 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3434 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3435 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3436 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3437 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3438 | |
bd60018a | 3439 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3440 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3441 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3442 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3443 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3444 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3445 | |
bd60018a | 3446 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3447 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3448 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3449 | return DDI_BUF_TRANS_SELECT(8); |
7ad14a29 SJ |
3450 | |
3451 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3452 | return DDI_BUF_TRANS_SELECT(9); | |
d6c0d722 PZ |
3453 | default: |
3454 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3455 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3456 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3457 | } |
a4fc5ed6 KP |
3458 | } |
3459 | ||
5829975c | 3460 | static void bxt_signal_levels(struct intel_dp *intel_dp) |
96fb9f9b VK |
3461 | { |
3462 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3463 | enum port port = dport->port; | |
3464 | struct drm_device *dev = dport->base.base.dev; | |
3465 | struct intel_encoder *encoder = &dport->base; | |
3466 | uint8_t train_set = intel_dp->train_set[0]; | |
3467 | uint32_t level = 0; | |
3468 | ||
3469 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3470 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3471 | switch (signal_levels) { | |
3472 | default: | |
3473 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emph level\n"); | |
3474 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3475 | level = 0; | |
3476 | break; | |
3477 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3478 | level = 1; | |
3479 | break; | |
3480 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3481 | level = 2; | |
3482 | break; | |
3483 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: | |
3484 | level = 3; | |
3485 | break; | |
3486 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3487 | level = 4; | |
3488 | break; | |
3489 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3490 | level = 5; | |
3491 | break; | |
3492 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3493 | level = 6; | |
3494 | break; | |
3495 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3496 | level = 7; | |
3497 | break; | |
3498 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3499 | level = 8; | |
3500 | break; | |
3501 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3502 | level = 9; | |
3503 | break; | |
3504 | } | |
3505 | ||
3506 | bxt_ddi_vswing_sequence(dev, level, port, encoder->type); | |
3507 | } | |
3508 | ||
f0a3424e PZ |
3509 | /* Properly updates "DP" with the correct signal levels. */ |
3510 | static void | |
3511 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3512 | { | |
3513 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3514 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3515 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3516 | uint32_t signal_levels, mask; | |
3517 | uint8_t train_set = intel_dp->train_set[0]; | |
3518 | ||
96fb9f9b VK |
3519 | if (IS_BROXTON(dev)) { |
3520 | signal_levels = 0; | |
5829975c | 3521 | bxt_signal_levels(intel_dp); |
96fb9f9b VK |
3522 | mask = 0; |
3523 | } else if (HAS_DDI(dev)) { | |
5829975c | 3524 | signal_levels = hsw_signal_levels(train_set); |
f0a3424e | 3525 | mask = DDI_BUF_EMP_MASK; |
e4a1d846 | 3526 | } else if (IS_CHERRYVIEW(dev)) { |
5829975c | 3527 | signal_levels = chv_signal_levels(intel_dp); |
e4a1d846 | 3528 | mask = 0; |
e2fa6fba | 3529 | } else if (IS_VALLEYVIEW(dev)) { |
5829975c | 3530 | signal_levels = vlv_signal_levels(intel_dp); |
e2fa6fba | 3531 | mask = 0; |
bc7d38a4 | 3532 | } else if (IS_GEN7(dev) && port == PORT_A) { |
5829975c | 3533 | signal_levels = gen7_edp_signal_levels(train_set); |
f0a3424e | 3534 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
bc7d38a4 | 3535 | } else if (IS_GEN6(dev) && port == PORT_A) { |
5829975c | 3536 | signal_levels = gen6_edp_signal_levels(train_set); |
f0a3424e PZ |
3537 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
3538 | } else { | |
5829975c | 3539 | signal_levels = gen4_signal_levels(train_set); |
f0a3424e PZ |
3540 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
3541 | } | |
3542 | ||
96fb9f9b VK |
3543 | if (mask) |
3544 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3545 | ||
3546 | DRM_DEBUG_KMS("Using vswing level %d\n", | |
3547 | train_set & DP_TRAIN_VOLTAGE_SWING_MASK); | |
3548 | DRM_DEBUG_KMS("Using pre-emphasis level %d\n", | |
3549 | (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> | |
3550 | DP_TRAIN_PRE_EMPHASIS_SHIFT); | |
f0a3424e PZ |
3551 | |
3552 | *DP = (*DP & ~mask) | signal_levels; | |
3553 | } | |
3554 | ||
a4fc5ed6 | 3555 | static bool |
ea5b213a | 3556 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3557 | uint32_t *DP, |
58e10eb9 | 3558 | uint8_t dp_train_pat) |
a4fc5ed6 | 3559 | { |
174edf1f PZ |
3560 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3561 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3562 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3563 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3564 | int ret, len; | |
a4fc5ed6 | 3565 | |
7b13b58a | 3566 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3567 | |
70aff66c | 3568 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3569 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3570 | |
2cdfe6c8 JN |
3571 | buf[0] = dp_train_pat; |
3572 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3573 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3574 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3575 | len = 1; | |
3576 | } else { | |
3577 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3578 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3579 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3580 | } |
a4fc5ed6 | 3581 | |
9d1a1031 JN |
3582 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3583 | buf, len); | |
2cdfe6c8 JN |
3584 | |
3585 | return ret == len; | |
a4fc5ed6 KP |
3586 | } |
3587 | ||
70aff66c JN |
3588 | static bool |
3589 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3590 | uint8_t dp_train_pat) | |
3591 | { | |
4e96c977 MK |
3592 | if (!intel_dp->train_set_valid) |
3593 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); | |
70aff66c JN |
3594 | intel_dp_set_signal_levels(intel_dp, DP); |
3595 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3596 | } | |
3597 | ||
3598 | static bool | |
3599 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3600 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3601 | { |
3602 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3603 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3604 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3605 | int ret; | |
3606 | ||
3607 | intel_get_adjust_train(intel_dp, link_status); | |
3608 | intel_dp_set_signal_levels(intel_dp, DP); | |
3609 | ||
3610 | I915_WRITE(intel_dp->output_reg, *DP); | |
3611 | POSTING_READ(intel_dp->output_reg); | |
3612 | ||
9d1a1031 JN |
3613 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3614 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3615 | |
3616 | return ret == intel_dp->lane_count; | |
3617 | } | |
3618 | ||
3ab9c637 ID |
3619 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3620 | { | |
3621 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3622 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3623 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3624 | enum port port = intel_dig_port->port; | |
3625 | uint32_t val; | |
3626 | ||
3627 | if (!HAS_DDI(dev)) | |
3628 | return; | |
3629 | ||
3630 | val = I915_READ(DP_TP_CTL(port)); | |
3631 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3632 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3633 | I915_WRITE(DP_TP_CTL(port), val); | |
3634 | ||
3635 | /* | |
3636 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3637 | * we need to set idle transmission mode is to work around a HW issue | |
3638 | * where we enable the pipe while not in idle link-training mode. | |
3639 | * In this case there is requirement to wait for a minimum number of | |
3640 | * idle patterns to be sent. | |
3641 | */ | |
3642 | if (port == PORT_A) | |
3643 | return; | |
3644 | ||
3645 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3646 | 1)) | |
3647 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3648 | } | |
3649 | ||
33a34e4e | 3650 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3651 | void |
33a34e4e | 3652 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3653 | { |
da63a9f2 | 3654 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3655 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3656 | int i; |
3657 | uint8_t voltage; | |
cdb0e95b | 3658 | int voltage_tries, loop_tries; |
ea5b213a | 3659 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3660 | uint8_t link_config[2]; |
a4fc5ed6 | 3661 | |
affa9354 | 3662 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3663 | intel_ddi_prepare_link_retrain(encoder); |
3664 | ||
3cf2efb1 | 3665 | /* Write the link configuration data */ |
6aba5b6c JN |
3666 | link_config[0] = intel_dp->link_bw; |
3667 | link_config[1] = intel_dp->lane_count; | |
3668 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3669 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3670 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
94ca719e | 3671 | if (intel_dp->num_sink_rates) |
a8f3ef61 SJ |
3672 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
3673 | &intel_dp->rate_select, 1); | |
6aba5b6c JN |
3674 | |
3675 | link_config[0] = 0; | |
3676 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3677 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3678 | |
3679 | DP |= DP_PORT_EN; | |
1a2eb460 | 3680 | |
70aff66c JN |
3681 | /* clock recovery */ |
3682 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3683 | DP_TRAINING_PATTERN_1 | | |
3684 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3685 | DRM_ERROR("failed to enable link training\n"); | |
3686 | return; | |
3687 | } | |
3688 | ||
a4fc5ed6 | 3689 | voltage = 0xff; |
cdb0e95b KP |
3690 | voltage_tries = 0; |
3691 | loop_tries = 0; | |
a4fc5ed6 | 3692 | for (;;) { |
70aff66c | 3693 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3694 | |
a7c9655f | 3695 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3696 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3697 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3698 | break; |
93f62dad | 3699 | } |
a4fc5ed6 | 3700 | |
01916270 | 3701 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3702 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3703 | break; |
3704 | } | |
3705 | ||
4e96c977 MK |
3706 | /* |
3707 | * if we used previously trained voltage and pre-emphasis values | |
3708 | * and we don't get clock recovery, reset link training values | |
3709 | */ | |
3710 | if (intel_dp->train_set_valid) { | |
3711 | DRM_DEBUG_KMS("clock recovery not ok, reset"); | |
3712 | /* clear the flag as we are not reusing train set */ | |
3713 | intel_dp->train_set_valid = false; | |
3714 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3715 | DP_TRAINING_PATTERN_1 | | |
3716 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3717 | DRM_ERROR("failed to enable link training\n"); | |
3718 | return; | |
3719 | } | |
3720 | continue; | |
3721 | } | |
3722 | ||
3cf2efb1 CW |
3723 | /* Check to see if we've tried the max voltage */ |
3724 | for (i = 0; i < intel_dp->lane_count; i++) | |
3725 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3726 | break; |
3b4f819d | 3727 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3728 | ++loop_tries; |
3729 | if (loop_tries == 5) { | |
3def84b3 | 3730 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3731 | break; |
3732 | } | |
70aff66c JN |
3733 | intel_dp_reset_link_train(intel_dp, &DP, |
3734 | DP_TRAINING_PATTERN_1 | | |
3735 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3736 | voltage_tries = 0; |
3737 | continue; | |
3738 | } | |
a4fc5ed6 | 3739 | |
3cf2efb1 | 3740 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3741 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3742 | ++voltage_tries; |
b06fbda3 | 3743 | if (voltage_tries == 5) { |
3def84b3 | 3744 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3745 | break; |
3746 | } | |
3747 | } else | |
3748 | voltage_tries = 0; | |
3749 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3750 | |
70aff66c JN |
3751 | /* Update training set as requested by target */ |
3752 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3753 | DRM_ERROR("failed to update link training\n"); | |
3754 | break; | |
3755 | } | |
a4fc5ed6 KP |
3756 | } |
3757 | ||
33a34e4e JB |
3758 | intel_dp->DP = DP; |
3759 | } | |
3760 | ||
c19b0669 | 3761 | void |
33a34e4e JB |
3762 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3763 | { | |
33a34e4e | 3764 | bool channel_eq = false; |
37f80975 | 3765 | int tries, cr_tries; |
33a34e4e | 3766 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3767 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3768 | ||
3769 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3770 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3771 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3772 | |
a4fc5ed6 | 3773 | /* channel equalization */ |
70aff66c | 3774 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3775 | training_pattern | |
70aff66c JN |
3776 | DP_LINK_SCRAMBLING_DISABLE)) { |
3777 | DRM_ERROR("failed to start channel equalization\n"); | |
3778 | return; | |
3779 | } | |
3780 | ||
a4fc5ed6 | 3781 | tries = 0; |
37f80975 | 3782 | cr_tries = 0; |
a4fc5ed6 KP |
3783 | channel_eq = false; |
3784 | for (;;) { | |
70aff66c | 3785 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3786 | |
37f80975 JB |
3787 | if (cr_tries > 5) { |
3788 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3789 | break; |
3790 | } | |
3791 | ||
a7c9655f | 3792 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3793 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3794 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3795 | break; |
70aff66c | 3796 | } |
a4fc5ed6 | 3797 | |
37f80975 | 3798 | /* Make sure clock is still ok */ |
01916270 | 3799 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
4e96c977 | 3800 | intel_dp->train_set_valid = false; |
37f80975 | 3801 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3802 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3803 | training_pattern | |
70aff66c | 3804 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3805 | cr_tries++; |
3806 | continue; | |
3807 | } | |
3808 | ||
1ffdff13 | 3809 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3810 | channel_eq = true; |
3811 | break; | |
3812 | } | |
a4fc5ed6 | 3813 | |
37f80975 JB |
3814 | /* Try 5 times, then try clock recovery if that fails */ |
3815 | if (tries > 5) { | |
4e96c977 | 3816 | intel_dp->train_set_valid = false; |
37f80975 | 3817 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3818 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3819 | training_pattern | |
70aff66c | 3820 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3821 | tries = 0; |
3822 | cr_tries++; | |
3823 | continue; | |
3824 | } | |
a4fc5ed6 | 3825 | |
70aff66c JN |
3826 | /* Update training set as requested by target */ |
3827 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3828 | DRM_ERROR("failed to update link training\n"); | |
3829 | break; | |
3830 | } | |
3cf2efb1 | 3831 | ++tries; |
869184a6 | 3832 | } |
3cf2efb1 | 3833 | |
3ab9c637 ID |
3834 | intel_dp_set_idle_link_train(intel_dp); |
3835 | ||
3836 | intel_dp->DP = DP; | |
3837 | ||
4e96c977 | 3838 | if (channel_eq) { |
5fa836a9 | 3839 | intel_dp->train_set_valid = true; |
07f42258 | 3840 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
4e96c977 | 3841 | } |
3ab9c637 ID |
3842 | } |
3843 | ||
3844 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3845 | { | |
70aff66c | 3846 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3847 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3848 | } |
3849 | ||
3850 | static void | |
ea5b213a | 3851 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3852 | { |
da63a9f2 | 3853 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3854 | enum port port = intel_dig_port->port; |
da63a9f2 | 3855 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3856 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3857 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3858 | |
bc76e320 | 3859 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3860 | return; |
3861 | ||
0c33d8d7 | 3862 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3863 | return; |
3864 | ||
28c97730 | 3865 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3866 | |
bc7d38a4 | 3867 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3868 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3869 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3870 | } else { |
aad3d14d VS |
3871 | if (IS_CHERRYVIEW(dev)) |
3872 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3873 | else | |
3874 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3875 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3876 | } |
fe255d00 | 3877 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3878 | |
493a7081 | 3879 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3880 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
5bddd17f EA |
3881 | /* Hardware workaround: leaving our transcoder select |
3882 | * set to transcoder B while it's off will prevent the | |
3883 | * corresponding HDMI output on transcoder A. | |
3884 | * | |
3885 | * Combine this with another hardware workaround: | |
3886 | * transcoder select bit can only be cleared while the | |
3887 | * port is enabled. | |
3888 | */ | |
3889 | DP &= ~DP_PIPEB_SELECT; | |
3890 | I915_WRITE(intel_dp->output_reg, DP); | |
0ca09685 | 3891 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3892 | } |
3893 | ||
832afda6 | 3894 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3895 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3896 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3897 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3898 | } |
3899 | ||
26d61aad KP |
3900 | static bool |
3901 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3902 | { |
a031d709 RV |
3903 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3904 | struct drm_device *dev = dig_port->base.base.dev; | |
3905 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3906 | uint8_t rev; |
a031d709 | 3907 | |
9d1a1031 JN |
3908 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3909 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3910 | return false; /* aux transfer failed */ |
92fd8fd1 | 3911 | |
a8e98153 | 3912 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3913 | |
edb39244 AJ |
3914 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3915 | return false; /* DPCD not present */ | |
3916 | ||
2293bb5c SK |
3917 | /* Check if the panel supports PSR */ |
3918 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3919 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3920 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3921 | intel_dp->psr_dpcd, | |
3922 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3923 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3924 | dev_priv->psr.sink_support = true; | |
50003939 | 3925 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3926 | } |
474d1ec4 SJ |
3927 | |
3928 | if (INTEL_INFO(dev)->gen >= 9 && | |
3929 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { | |
3930 | uint8_t frame_sync_cap; | |
3931 | ||
3932 | dev_priv->psr.sink_support = true; | |
3933 | intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3934 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, | |
3935 | &frame_sync_cap, 1); | |
3936 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; | |
3937 | /* PSR2 needs frame sync as well */ | |
3938 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; | |
3939 | DRM_DEBUG_KMS("PSR2 %s on sink", | |
3940 | dev_priv->psr.psr2_support ? "supported" : "not supported"); | |
3941 | } | |
50003939 JN |
3942 | } |
3943 | ||
7809a611 | 3944 | /* Training Pattern 3 support, both source and sink */ |
06ea66b6 | 3945 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
7809a611 JN |
3946 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
3947 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { | |
06ea66b6 | 3948 | intel_dp->use_tps3 = true; |
f8d8a672 | 3949 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3950 | } else |
3951 | intel_dp->use_tps3 = false; | |
3952 | ||
fc0f8e25 SJ |
3953 | /* Intermediate frequency support */ |
3954 | if (is_edp(intel_dp) && | |
3955 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3956 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
3957 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
94ca719e | 3958 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
ea2d8a42 VS |
3959 | int i; |
3960 | ||
fc0f8e25 SJ |
3961 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
3962 | DP_SUPPORTED_LINK_RATES, | |
94ca719e VS |
3963 | sink_rates, |
3964 | sizeof(sink_rates)); | |
ea2d8a42 | 3965 | |
94ca719e VS |
3966 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
3967 | int val = le16_to_cpu(sink_rates[i]); | |
ea2d8a42 VS |
3968 | |
3969 | if (val == 0) | |
3970 | break; | |
3971 | ||
af77b974 SJ |
3972 | /* Value read is in kHz while drm clock is saved in deca-kHz */ |
3973 | intel_dp->sink_rates[i] = (val * 200) / 10; | |
ea2d8a42 | 3974 | } |
94ca719e | 3975 | intel_dp->num_sink_rates = i; |
fc0f8e25 | 3976 | } |
0336400e VS |
3977 | |
3978 | intel_dp_print_rates(intel_dp); | |
3979 | ||
edb39244 AJ |
3980 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3981 | DP_DWN_STRM_PORT_PRESENT)) | |
3982 | return true; /* native DP sink */ | |
3983 | ||
3984 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3985 | return true; /* no per-port downstream info */ | |
3986 | ||
9d1a1031 JN |
3987 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3988 | intel_dp->downstream_ports, | |
3989 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3990 | return false; /* downstream port status fetch failed */ |
3991 | ||
3992 | return true; | |
92fd8fd1 KP |
3993 | } |
3994 | ||
0d198328 AJ |
3995 | static void |
3996 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3997 | { | |
3998 | u8 buf[3]; | |
3999 | ||
4000 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
4001 | return; | |
4002 | ||
9d1a1031 | 4003 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
4004 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
4005 | buf[0], buf[1], buf[2]); | |
4006 | ||
9d1a1031 | 4007 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
4008 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
4009 | buf[0], buf[1], buf[2]); | |
4010 | } | |
4011 | ||
0e32b39c DA |
4012 | static bool |
4013 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
4014 | { | |
4015 | u8 buf[1]; | |
4016 | ||
4017 | if (!intel_dp->can_mst) | |
4018 | return false; | |
4019 | ||
4020 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
4021 | return false; | |
4022 | ||
0e32b39c DA |
4023 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
4024 | if (buf[0] & DP_MST_CAP) { | |
4025 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
4026 | intel_dp->is_mst = true; | |
4027 | } else { | |
4028 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
4029 | intel_dp->is_mst = false; | |
4030 | } | |
4031 | } | |
0e32b39c DA |
4032 | |
4033 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4034 | return intel_dp->is_mst; | |
4035 | } | |
4036 | ||
d2e216d0 RV |
4037 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
4038 | { | |
4039 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4040 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4041 | struct intel_crtc *intel_crtc = | |
4042 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ad9dc91b RV |
4043 | u8 buf; |
4044 | int test_crc_count; | |
4045 | int attempts = 6; | |
d2e216d0 | 4046 | |
ad9dc91b | 4047 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 4048 | return -EIO; |
d2e216d0 | 4049 | |
ad9dc91b | 4050 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
d2e216d0 RV |
4051 | return -ENOTTY; |
4052 | ||
1dda5f93 RV |
4053 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
4054 | return -EIO; | |
4055 | ||
9d1a1031 | 4056 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
ce31d9f4 | 4057 | buf | DP_TEST_SINK_START) < 0) |
bda0381e | 4058 | return -EIO; |
d2e216d0 | 4059 | |
1dda5f93 | 4060 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 4061 | return -EIO; |
ad9dc91b | 4062 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
d2e216d0 | 4063 | |
ad9dc91b | 4064 | do { |
1dda5f93 RV |
4065 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
4066 | DP_TEST_SINK_MISC, &buf) < 0) | |
4067 | return -EIO; | |
ad9dc91b RV |
4068 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
4069 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); | |
4070 | ||
4071 | if (attempts == 0) { | |
90bd1f46 DV |
4072 | DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n"); |
4073 | return -ETIMEDOUT; | |
ad9dc91b | 4074 | } |
d2e216d0 | 4075 | |
9d1a1031 | 4076 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
bda0381e | 4077 | return -EIO; |
d2e216d0 | 4078 | |
1dda5f93 RV |
4079 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
4080 | return -EIO; | |
4081 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, | |
4082 | buf & ~DP_TEST_SINK_START) < 0) | |
4083 | return -EIO; | |
ce31d9f4 | 4084 | |
d2e216d0 RV |
4085 | return 0; |
4086 | } | |
4087 | ||
a60f0e38 JB |
4088 | static bool |
4089 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4090 | { | |
9d1a1031 JN |
4091 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
4092 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4093 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
4094 | } |
4095 | ||
0e32b39c DA |
4096 | static bool |
4097 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4098 | { | |
4099 | int ret; | |
4100 | ||
4101 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
4102 | DP_SINK_COUNT_ESI, | |
4103 | sink_irq_vector, 14); | |
4104 | if (ret != 14) | |
4105 | return false; | |
4106 | ||
4107 | return true; | |
4108 | } | |
4109 | ||
c5d5ab7a TP |
4110 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
4111 | { | |
4112 | uint8_t test_result = DP_TEST_ACK; | |
4113 | return test_result; | |
4114 | } | |
4115 | ||
4116 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) | |
4117 | { | |
4118 | uint8_t test_result = DP_TEST_NAK; | |
4119 | return test_result; | |
4120 | } | |
4121 | ||
4122 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) | |
a60f0e38 | 4123 | { |
c5d5ab7a | 4124 | uint8_t test_result = DP_TEST_NAK; |
559be30c TP |
4125 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
4126 | struct drm_connector *connector = &intel_connector->base; | |
4127 | ||
4128 | if (intel_connector->detect_edid == NULL || | |
ac6f2e29 | 4129 | connector->edid_corrupt || |
559be30c TP |
4130 | intel_dp->aux.i2c_defer_count > 6) { |
4131 | /* Check EDID read for NACKs, DEFERs and corruption | |
4132 | * (DP CTS 1.2 Core r1.1) | |
4133 | * 4.2.2.4 : Failed EDID read, I2C_NAK | |
4134 | * 4.2.2.5 : Failed EDID read, I2C_DEFER | |
4135 | * 4.2.2.6 : EDID corruption detected | |
4136 | * Use failsafe mode for all cases | |
4137 | */ | |
4138 | if (intel_dp->aux.i2c_nack_count > 0 || | |
4139 | intel_dp->aux.i2c_defer_count > 0) | |
4140 | DRM_DEBUG_KMS("EDID read had %d NACKs, %d DEFERs\n", | |
4141 | intel_dp->aux.i2c_nack_count, | |
4142 | intel_dp->aux.i2c_defer_count); | |
4143 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; | |
4144 | } else { | |
4145 | if (!drm_dp_dpcd_write(&intel_dp->aux, | |
4146 | DP_TEST_EDID_CHECKSUM, | |
4147 | &intel_connector->detect_edid->checksum, | |
5a1cc655 | 4148 | 1)) |
559be30c TP |
4149 | DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |
4150 | ||
4151 | test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE; | |
4152 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_STANDARD; | |
4153 | } | |
4154 | ||
4155 | /* Set test active flag here so userspace doesn't interrupt things */ | |
4156 | intel_dp->compliance_test_active = 1; | |
4157 | ||
c5d5ab7a TP |
4158 | return test_result; |
4159 | } | |
4160 | ||
4161 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) | |
a60f0e38 | 4162 | { |
c5d5ab7a TP |
4163 | uint8_t test_result = DP_TEST_NAK; |
4164 | return test_result; | |
4165 | } | |
4166 | ||
4167 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
4168 | { | |
4169 | uint8_t response = DP_TEST_NAK; | |
4170 | uint8_t rxdata = 0; | |
4171 | int status = 0; | |
4172 | ||
559be30c | 4173 | intel_dp->compliance_test_active = 0; |
c5d5ab7a | 4174 | intel_dp->compliance_test_type = 0; |
559be30c TP |
4175 | intel_dp->compliance_test_data = 0; |
4176 | ||
c5d5ab7a TP |
4177 | intel_dp->aux.i2c_nack_count = 0; |
4178 | intel_dp->aux.i2c_defer_count = 0; | |
4179 | ||
4180 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); | |
4181 | if (status <= 0) { | |
4182 | DRM_DEBUG_KMS("Could not read test request from sink\n"); | |
4183 | goto update_status; | |
4184 | } | |
4185 | ||
4186 | switch (rxdata) { | |
4187 | case DP_TEST_LINK_TRAINING: | |
4188 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); | |
4189 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; | |
4190 | response = intel_dp_autotest_link_training(intel_dp); | |
4191 | break; | |
4192 | case DP_TEST_LINK_VIDEO_PATTERN: | |
4193 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); | |
4194 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; | |
4195 | response = intel_dp_autotest_video_pattern(intel_dp); | |
4196 | break; | |
4197 | case DP_TEST_LINK_EDID_READ: | |
4198 | DRM_DEBUG_KMS("EDID test requested\n"); | |
4199 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; | |
4200 | response = intel_dp_autotest_edid(intel_dp); | |
4201 | break; | |
4202 | case DP_TEST_LINK_PHY_TEST_PATTERN: | |
4203 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); | |
4204 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; | |
4205 | response = intel_dp_autotest_phy_pattern(intel_dp); | |
4206 | break; | |
4207 | default: | |
4208 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); | |
4209 | break; | |
4210 | } | |
4211 | ||
4212 | update_status: | |
4213 | status = drm_dp_dpcd_write(&intel_dp->aux, | |
4214 | DP_TEST_RESPONSE, | |
4215 | &response, 1); | |
4216 | if (status <= 0) | |
4217 | DRM_DEBUG_KMS("Could not write test response to sink\n"); | |
a60f0e38 JB |
4218 | } |
4219 | ||
0e32b39c DA |
4220 | static int |
4221 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
4222 | { | |
4223 | bool bret; | |
4224 | ||
4225 | if (intel_dp->is_mst) { | |
4226 | u8 esi[16] = { 0 }; | |
4227 | int ret = 0; | |
4228 | int retry; | |
4229 | bool handled; | |
4230 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4231 | go_again: | |
4232 | if (bret == true) { | |
4233 | ||
4234 | /* check link status - esi[10] = 0x200c */ | |
4235 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
4236 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
4237 | intel_dp_start_link_train(intel_dp); | |
4238 | intel_dp_complete_link_train(intel_dp); | |
4239 | intel_dp_stop_link_train(intel_dp); | |
4240 | } | |
4241 | ||
6f34cc39 | 4242 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
4243 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
4244 | ||
4245 | if (handled) { | |
4246 | for (retry = 0; retry < 3; retry++) { | |
4247 | int wret; | |
4248 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
4249 | DP_SINK_COUNT_ESI+1, | |
4250 | &esi[1], 3); | |
4251 | if (wret == 3) { | |
4252 | break; | |
4253 | } | |
4254 | } | |
4255 | ||
4256 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4257 | if (bret == true) { | |
6f34cc39 | 4258 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
4259 | goto go_again; |
4260 | } | |
4261 | } else | |
4262 | ret = 0; | |
4263 | ||
4264 | return ret; | |
4265 | } else { | |
4266 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4267 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
4268 | intel_dp->is_mst = false; | |
4269 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4270 | /* send a hotplug event */ | |
4271 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
4272 | } | |
4273 | } | |
4274 | return -EINVAL; | |
4275 | } | |
4276 | ||
a4fc5ed6 KP |
4277 | /* |
4278 | * According to DP spec | |
4279 | * 5.1.2: | |
4280 | * 1. Read DPCD | |
4281 | * 2. Configure link according to Receiver Capabilities | |
4282 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4283 | * 4. Check link status on receipt of hot-plug interrupt | |
4284 | */ | |
a5146200 | 4285 | static void |
ea5b213a | 4286 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 4287 | { |
5b215bcf | 4288 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 4289 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 4290 | u8 sink_irq_vector; |
93f62dad | 4291 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 4292 | |
5b215bcf DA |
4293 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
4294 | ||
da63a9f2 | 4295 | if (!intel_encoder->connectors_active) |
d2b996ac | 4296 | return; |
59cd09e1 | 4297 | |
da63a9f2 | 4298 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
4299 | return; |
4300 | ||
1a125d8a ID |
4301 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
4302 | return; | |
4303 | ||
92fd8fd1 | 4304 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 4305 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
4306 | return; |
4307 | } | |
4308 | ||
92fd8fd1 | 4309 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 4310 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
4311 | return; |
4312 | } | |
4313 | ||
a60f0e38 JB |
4314 | /* Try to read the source of the interrupt */ |
4315 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4316 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4317 | /* Clear interrupt source */ | |
9d1a1031 JN |
4318 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4319 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4320 | sink_irq_vector); | |
a60f0e38 JB |
4321 | |
4322 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
09b1eb13 | 4323 | DRM_DEBUG_DRIVER("Test request in short pulse not handled\n"); |
a60f0e38 JB |
4324 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
4325 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4326 | } | |
4327 | ||
1ffdff13 | 4328 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4329 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4330 | intel_encoder->base.name); |
33a34e4e JB |
4331 | intel_dp_start_link_train(intel_dp); |
4332 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4333 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4334 | } |
a4fc5ed6 | 4335 | } |
a4fc5ed6 | 4336 | |
caf9ab24 | 4337 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4338 | static enum drm_connector_status |
26d61aad | 4339 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4340 | { |
caf9ab24 | 4341 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4342 | uint8_t type; |
4343 | ||
4344 | if (!intel_dp_get_dpcd(intel_dp)) | |
4345 | return connector_status_disconnected; | |
4346 | ||
4347 | /* if there's no downstream port, we're done */ | |
4348 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4349 | return connector_status_connected; |
caf9ab24 AJ |
4350 | |
4351 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4352 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4353 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4354 | uint8_t reg; |
9d1a1031 JN |
4355 | |
4356 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4357 | ®, 1) < 0) | |
caf9ab24 | 4358 | return connector_status_unknown; |
9d1a1031 | 4359 | |
23235177 AJ |
4360 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4361 | : connector_status_disconnected; | |
caf9ab24 AJ |
4362 | } |
4363 | ||
4364 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4365 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4366 | return connector_status_connected; |
caf9ab24 AJ |
4367 | |
4368 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4369 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4370 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4371 | if (type == DP_DS_PORT_TYPE_VGA || | |
4372 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4373 | return connector_status_unknown; | |
4374 | } else { | |
4375 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4376 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4377 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4378 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4379 | return connector_status_unknown; | |
4380 | } | |
caf9ab24 AJ |
4381 | |
4382 | /* Anything else is out of spec, warn and ignore */ | |
4383 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4384 | return connector_status_disconnected; |
71ba9000 AJ |
4385 | } |
4386 | ||
d410b56d CW |
4387 | static enum drm_connector_status |
4388 | edp_detect(struct intel_dp *intel_dp) | |
4389 | { | |
4390 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4391 | enum drm_connector_status status; | |
4392 | ||
4393 | status = intel_panel_detect(dev); | |
4394 | if (status == connector_status_unknown) | |
4395 | status = connector_status_connected; | |
4396 | ||
4397 | return status; | |
4398 | } | |
4399 | ||
5eb08b69 | 4400 | static enum drm_connector_status |
a9756bb5 | 4401 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4402 | { |
30add22d | 4403 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4404 | struct drm_i915_private *dev_priv = dev->dev_private; |
4405 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4406 | |
1b469639 DL |
4407 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4408 | return connector_status_disconnected; | |
4409 | ||
26d61aad | 4410 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4411 | } |
4412 | ||
2a592bec DA |
4413 | static int g4x_digital_port_connected(struct drm_device *dev, |
4414 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4415 | { |
a4fc5ed6 | 4416 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4417 | uint32_t bit; |
5eb08b69 | 4418 | |
232a6ee9 TP |
4419 | if (IS_VALLEYVIEW(dev)) { |
4420 | switch (intel_dig_port->port) { | |
4421 | case PORT_B: | |
4422 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4423 | break; | |
4424 | case PORT_C: | |
4425 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4426 | break; | |
4427 | case PORT_D: | |
4428 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4429 | break; | |
4430 | default: | |
2a592bec | 4431 | return -EINVAL; |
232a6ee9 TP |
4432 | } |
4433 | } else { | |
4434 | switch (intel_dig_port->port) { | |
4435 | case PORT_B: | |
4436 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4437 | break; | |
4438 | case PORT_C: | |
4439 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4440 | break; | |
4441 | case PORT_D: | |
4442 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4443 | break; | |
4444 | default: | |
2a592bec | 4445 | return -EINVAL; |
232a6ee9 | 4446 | } |
a4fc5ed6 KP |
4447 | } |
4448 | ||
10f76a38 | 4449 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4450 | return 0; |
4451 | return 1; | |
4452 | } | |
4453 | ||
4454 | static enum drm_connector_status | |
4455 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4456 | { | |
4457 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4458 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4459 | int ret; | |
4460 | ||
4461 | /* Can't disconnect eDP, but you can close the lid... */ | |
4462 | if (is_edp(intel_dp)) { | |
4463 | enum drm_connector_status status; | |
4464 | ||
4465 | status = intel_panel_detect(dev); | |
4466 | if (status == connector_status_unknown) | |
4467 | status = connector_status_connected; | |
4468 | return status; | |
4469 | } | |
4470 | ||
4471 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4472 | if (ret == -EINVAL) | |
4473 | return connector_status_unknown; | |
4474 | else if (ret == 0) | |
a4fc5ed6 KP |
4475 | return connector_status_disconnected; |
4476 | ||
26d61aad | 4477 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4478 | } |
4479 | ||
8c241fef | 4480 | static struct edid * |
beb60608 | 4481 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4482 | { |
beb60608 | 4483 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4484 | |
9cd300e0 JN |
4485 | /* use cached edid if we have one */ |
4486 | if (intel_connector->edid) { | |
9cd300e0 JN |
4487 | /* invalid edid */ |
4488 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4489 | return NULL; |
4490 | ||
55e9edeb | 4491 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4492 | } else |
4493 | return drm_get_edid(&intel_connector->base, | |
4494 | &intel_dp->aux.ddc); | |
4495 | } | |
8c241fef | 4496 | |
beb60608 CW |
4497 | static void |
4498 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4499 | { | |
4500 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4501 | struct edid *edid; | |
8c241fef | 4502 | |
beb60608 CW |
4503 | edid = intel_dp_get_edid(intel_dp); |
4504 | intel_connector->detect_edid = edid; | |
4505 | ||
4506 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4507 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4508 | else | |
4509 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4510 | } |
4511 | ||
beb60608 CW |
4512 | static void |
4513 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4514 | { |
beb60608 | 4515 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4516 | |
beb60608 CW |
4517 | kfree(intel_connector->detect_edid); |
4518 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4519 | |
beb60608 CW |
4520 | intel_dp->has_audio = false; |
4521 | } | |
d6f24d0f | 4522 | |
beb60608 CW |
4523 | static enum intel_display_power_domain |
4524 | intel_dp_power_get(struct intel_dp *dp) | |
4525 | { | |
4526 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4527 | enum intel_display_power_domain power_domain; | |
4528 | ||
4529 | power_domain = intel_display_port_power_domain(encoder); | |
4530 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4531 | ||
4532 | return power_domain; | |
4533 | } | |
d6f24d0f | 4534 | |
beb60608 CW |
4535 | static void |
4536 | intel_dp_power_put(struct intel_dp *dp, | |
4537 | enum intel_display_power_domain power_domain) | |
4538 | { | |
4539 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4540 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4541 | } |
4542 | ||
a9756bb5 ZW |
4543 | static enum drm_connector_status |
4544 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4545 | { | |
4546 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4547 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4548 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4549 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4550 | enum drm_connector_status status; |
671dedd2 | 4551 | enum intel_display_power_domain power_domain; |
0e32b39c | 4552 | bool ret; |
09b1eb13 | 4553 | u8 sink_irq_vector; |
a9756bb5 | 4554 | |
164c8598 | 4555 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4556 | connector->base.id, connector->name); |
beb60608 | 4557 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4558 | |
0e32b39c DA |
4559 | if (intel_dp->is_mst) { |
4560 | /* MST devices are disconnected from a monitor POV */ | |
4561 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4562 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4563 | return connector_status_disconnected; |
0e32b39c DA |
4564 | } |
4565 | ||
beb60608 | 4566 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4567 | |
d410b56d CW |
4568 | /* Can't disconnect eDP, but you can close the lid... */ |
4569 | if (is_edp(intel_dp)) | |
4570 | status = edp_detect(intel_dp); | |
4571 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4572 | status = ironlake_dp_detect(intel_dp); |
4573 | else | |
4574 | status = g4x_dp_detect(intel_dp); | |
4575 | if (status != connector_status_connected) | |
c8c8fb33 | 4576 | goto out; |
a9756bb5 | 4577 | |
0d198328 AJ |
4578 | intel_dp_probe_oui(intel_dp); |
4579 | ||
0e32b39c DA |
4580 | ret = intel_dp_probe_mst(intel_dp); |
4581 | if (ret) { | |
4582 | /* if we are in MST mode then this connector | |
4583 | won't appear connected or have anything with EDID on it */ | |
4584 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4585 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4586 | status = connector_status_disconnected; | |
4587 | goto out; | |
4588 | } | |
4589 | ||
beb60608 | 4590 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4591 | |
d63885da PZ |
4592 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4593 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4594 | status = connector_status_connected; |
4595 | ||
09b1eb13 TP |
4596 | /* Try to read the source of the interrupt */ |
4597 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4598 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4599 | /* Clear interrupt source */ | |
4600 | drm_dp_dpcd_writeb(&intel_dp->aux, | |
4601 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4602 | sink_irq_vector); | |
4603 | ||
4604 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4605 | intel_dp_handle_test_request(intel_dp); | |
4606 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4607 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4608 | } | |
4609 | ||
c8c8fb33 | 4610 | out: |
beb60608 | 4611 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4612 | return status; |
a4fc5ed6 KP |
4613 | } |
4614 | ||
beb60608 CW |
4615 | static void |
4616 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4617 | { |
df0e9248 | 4618 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4619 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4620 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4621 | |
beb60608 CW |
4622 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4623 | connector->base.id, connector->name); | |
4624 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4625 | |
beb60608 CW |
4626 | if (connector->status != connector_status_connected) |
4627 | return; | |
671dedd2 | 4628 | |
beb60608 CW |
4629 | power_domain = intel_dp_power_get(intel_dp); |
4630 | ||
4631 | intel_dp_set_edid(intel_dp); | |
4632 | ||
4633 | intel_dp_power_put(intel_dp, power_domain); | |
4634 | ||
4635 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4636 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4637 | } | |
4638 | ||
4639 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4640 | { | |
4641 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4642 | struct edid *edid; | |
4643 | ||
4644 | edid = intel_connector->detect_edid; | |
4645 | if (edid) { | |
4646 | int ret = intel_connector_update_modes(connector, edid); | |
4647 | if (ret) | |
4648 | return ret; | |
4649 | } | |
32f9d658 | 4650 | |
f8779fda | 4651 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4652 | if (is_edp(intel_attached_dp(connector)) && |
4653 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4654 | struct drm_display_mode *mode; |
beb60608 CW |
4655 | |
4656 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4657 | intel_connector->panel.fixed_mode); |
f8779fda | 4658 | if (mode) { |
32f9d658 ZW |
4659 | drm_mode_probed_add(connector, mode); |
4660 | return 1; | |
4661 | } | |
4662 | } | |
beb60608 | 4663 | |
32f9d658 | 4664 | return 0; |
a4fc5ed6 KP |
4665 | } |
4666 | ||
1aad7ac0 CW |
4667 | static bool |
4668 | intel_dp_detect_audio(struct drm_connector *connector) | |
4669 | { | |
1aad7ac0 | 4670 | bool has_audio = false; |
beb60608 | 4671 | struct edid *edid; |
1aad7ac0 | 4672 | |
beb60608 CW |
4673 | edid = to_intel_connector(connector)->detect_edid; |
4674 | if (edid) | |
1aad7ac0 | 4675 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4676 | |
1aad7ac0 CW |
4677 | return has_audio; |
4678 | } | |
4679 | ||
f684960e CW |
4680 | static int |
4681 | intel_dp_set_property(struct drm_connector *connector, | |
4682 | struct drm_property *property, | |
4683 | uint64_t val) | |
4684 | { | |
e953fd7b | 4685 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4686 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4687 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4688 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4689 | int ret; |
4690 | ||
662595df | 4691 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4692 | if (ret) |
4693 | return ret; | |
4694 | ||
3f43c48d | 4695 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4696 | int i = val; |
4697 | bool has_audio; | |
4698 | ||
4699 | if (i == intel_dp->force_audio) | |
f684960e CW |
4700 | return 0; |
4701 | ||
1aad7ac0 | 4702 | intel_dp->force_audio = i; |
f684960e | 4703 | |
c3e5f67b | 4704 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4705 | has_audio = intel_dp_detect_audio(connector); |
4706 | else | |
c3e5f67b | 4707 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4708 | |
4709 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4710 | return 0; |
4711 | ||
1aad7ac0 | 4712 | intel_dp->has_audio = has_audio; |
f684960e CW |
4713 | goto done; |
4714 | } | |
4715 | ||
e953fd7b | 4716 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4717 | bool old_auto = intel_dp->color_range_auto; |
4718 | uint32_t old_range = intel_dp->color_range; | |
4719 | ||
55bc60db VS |
4720 | switch (val) { |
4721 | case INTEL_BROADCAST_RGB_AUTO: | |
4722 | intel_dp->color_range_auto = true; | |
4723 | break; | |
4724 | case INTEL_BROADCAST_RGB_FULL: | |
4725 | intel_dp->color_range_auto = false; | |
4726 | intel_dp->color_range = 0; | |
4727 | break; | |
4728 | case INTEL_BROADCAST_RGB_LIMITED: | |
4729 | intel_dp->color_range_auto = false; | |
4730 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4731 | break; | |
4732 | default: | |
4733 | return -EINVAL; | |
4734 | } | |
ae4edb80 DV |
4735 | |
4736 | if (old_auto == intel_dp->color_range_auto && | |
4737 | old_range == intel_dp->color_range) | |
4738 | return 0; | |
4739 | ||
e953fd7b CW |
4740 | goto done; |
4741 | } | |
4742 | ||
53b41837 YN |
4743 | if (is_edp(intel_dp) && |
4744 | property == connector->dev->mode_config.scaling_mode_property) { | |
4745 | if (val == DRM_MODE_SCALE_NONE) { | |
4746 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4747 | return -EINVAL; | |
4748 | } | |
4749 | ||
4750 | if (intel_connector->panel.fitting_mode == val) { | |
4751 | /* the eDP scaling property is not changed */ | |
4752 | return 0; | |
4753 | } | |
4754 | intel_connector->panel.fitting_mode = val; | |
4755 | ||
4756 | goto done; | |
4757 | } | |
4758 | ||
f684960e CW |
4759 | return -EINVAL; |
4760 | ||
4761 | done: | |
c0c36b94 CW |
4762 | if (intel_encoder->base.crtc) |
4763 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4764 | |
4765 | return 0; | |
4766 | } | |
4767 | ||
a4fc5ed6 | 4768 | static void |
73845adf | 4769 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4770 | { |
1d508706 | 4771 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4772 | |
10e972d3 | 4773 | kfree(intel_connector->detect_edid); |
beb60608 | 4774 | |
9cd300e0 JN |
4775 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4776 | kfree(intel_connector->edid); | |
4777 | ||
acd8db10 PZ |
4778 | /* Can't call is_edp() since the encoder may have been destroyed |
4779 | * already. */ | |
4780 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4781 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4782 | |
a4fc5ed6 | 4783 | drm_connector_cleanup(connector); |
55f78c43 | 4784 | kfree(connector); |
a4fc5ed6 KP |
4785 | } |
4786 | ||
00c09d70 | 4787 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4788 | { |
da63a9f2 PZ |
4789 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4790 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4791 | |
4f71d0cb | 4792 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4793 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4794 | if (is_edp(intel_dp)) { |
4795 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4796 | /* |
4797 | * vdd might still be enabled do to the delayed vdd off. | |
4798 | * Make sure vdd is actually turned off here. | |
4799 | */ | |
773538e8 | 4800 | pps_lock(intel_dp); |
4be73780 | 4801 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4802 | pps_unlock(intel_dp); |
4803 | ||
01527b31 CT |
4804 | if (intel_dp->edp_notifier.notifier_call) { |
4805 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4806 | intel_dp->edp_notifier.notifier_call = NULL; | |
4807 | } | |
bd943159 | 4808 | } |
c8bd0e49 | 4809 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4810 | kfree(intel_dig_port); |
24d05927 DV |
4811 | } |
4812 | ||
07f9cd0b ID |
4813 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4814 | { | |
4815 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4816 | ||
4817 | if (!is_edp(intel_dp)) | |
4818 | return; | |
4819 | ||
951468f3 VS |
4820 | /* |
4821 | * vdd might still be enabled do to the delayed vdd off. | |
4822 | * Make sure vdd is actually turned off here. | |
4823 | */ | |
afa4e53a | 4824 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4825 | pps_lock(intel_dp); |
07f9cd0b | 4826 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4827 | pps_unlock(intel_dp); |
07f9cd0b ID |
4828 | } |
4829 | ||
49e6bc51 VS |
4830 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4831 | { | |
4832 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4833 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4834 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4835 | enum intel_display_power_domain power_domain; | |
4836 | ||
4837 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4838 | ||
4839 | if (!edp_have_panel_vdd(intel_dp)) | |
4840 | return; | |
4841 | ||
4842 | /* | |
4843 | * The VDD bit needs a power domain reference, so if the bit is | |
4844 | * already enabled when we boot or resume, grab this reference and | |
4845 | * schedule a vdd off, so we don't hold on to the reference | |
4846 | * indefinitely. | |
4847 | */ | |
4848 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4849 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
4850 | intel_display_power_get(dev_priv, power_domain); | |
4851 | ||
4852 | edp_panel_vdd_schedule_off(intel_dp); | |
4853 | } | |
4854 | ||
6d93c0c4 ID |
4855 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4856 | { | |
49e6bc51 VS |
4857 | struct intel_dp *intel_dp; |
4858 | ||
4859 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
4860 | return; | |
4861 | ||
4862 | intel_dp = enc_to_intel_dp(encoder); | |
4863 | ||
4864 | pps_lock(intel_dp); | |
4865 | ||
4866 | /* | |
4867 | * Read out the current power sequencer assignment, | |
4868 | * in case the BIOS did something with it. | |
4869 | */ | |
4870 | if (IS_VALLEYVIEW(encoder->dev)) | |
4871 | vlv_initial_power_sequencer_setup(intel_dp); | |
4872 | ||
4873 | intel_edp_panel_vdd_sanitize(intel_dp); | |
4874 | ||
4875 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4876 | } |
4877 | ||
a4fc5ed6 | 4878 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4879 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4880 | .detect = intel_dp_detect, |
beb60608 | 4881 | .force = intel_dp_force, |
a4fc5ed6 | 4882 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4883 | .set_property = intel_dp_set_property, |
2545e4a6 | 4884 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 4885 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4886 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 4887 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
a4fc5ed6 KP |
4888 | }; |
4889 | ||
4890 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4891 | .get_modes = intel_dp_get_modes, | |
4892 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4893 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4894 | }; |
4895 | ||
a4fc5ed6 | 4896 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4897 | .reset = intel_dp_encoder_reset, |
24d05927 | 4898 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4899 | }; |
4900 | ||
0e32b39c | 4901 | void |
21d40d37 | 4902 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4903 | { |
0e32b39c | 4904 | return; |
c8110e52 | 4905 | } |
6207937d | 4906 | |
b2c5c181 | 4907 | enum irqreturn |
13cf5504 DA |
4908 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4909 | { | |
4910 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4911 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4912 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4913 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 4914 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4915 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4916 | |
0e32b39c DA |
4917 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4918 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4919 | |
7a7f84cc VS |
4920 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4921 | /* | |
4922 | * vdd off can generate a long pulse on eDP which | |
4923 | * would require vdd on to handle it, and thus we | |
4924 | * would end up in an endless cycle of | |
4925 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4926 | */ | |
4927 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4928 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4929 | return IRQ_HANDLED; |
7a7f84cc VS |
4930 | } |
4931 | ||
26fbb774 VS |
4932 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4933 | port_name(intel_dig_port->port), | |
0e32b39c | 4934 | long_hpd ? "long" : "short"); |
13cf5504 | 4935 | |
1c767b33 ID |
4936 | power_domain = intel_display_port_power_domain(intel_encoder); |
4937 | intel_display_power_get(dev_priv, power_domain); | |
4938 | ||
0e32b39c | 4939 | if (long_hpd) { |
5fa836a9 MK |
4940 | /* indicate that we need to restart link training */ |
4941 | intel_dp->train_set_valid = false; | |
2a592bec DA |
4942 | |
4943 | if (HAS_PCH_SPLIT(dev)) { | |
4944 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4945 | goto mst_fail; | |
4946 | } else { | |
4947 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4948 | goto mst_fail; | |
4949 | } | |
0e32b39c DA |
4950 | |
4951 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4952 | goto mst_fail; | |
4953 | } | |
4954 | ||
4955 | intel_dp_probe_oui(intel_dp); | |
4956 | ||
4957 | if (!intel_dp_probe_mst(intel_dp)) | |
4958 | goto mst_fail; | |
4959 | ||
4960 | } else { | |
4961 | if (intel_dp->is_mst) { | |
1c767b33 | 4962 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4963 | goto mst_fail; |
4964 | } | |
4965 | ||
4966 | if (!intel_dp->is_mst) { | |
4967 | /* | |
4968 | * we'll check the link status via the normal hot plug path later - | |
4969 | * but for short hpds we should check it now | |
4970 | */ | |
5b215bcf | 4971 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4972 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4973 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4974 | } |
4975 | } | |
b2c5c181 DV |
4976 | |
4977 | ret = IRQ_HANDLED; | |
4978 | ||
1c767b33 | 4979 | goto put_power; |
0e32b39c DA |
4980 | mst_fail: |
4981 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4982 | if (intel_dp->is_mst) { | |
4983 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4984 | intel_dp->is_mst = false; | |
4985 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4986 | } | |
1c767b33 ID |
4987 | put_power: |
4988 | intel_display_power_put(dev_priv, power_domain); | |
4989 | ||
4990 | return ret; | |
13cf5504 DA |
4991 | } |
4992 | ||
e3421a18 ZW |
4993 | /* Return which DP Port should be selected for Transcoder DP control */ |
4994 | int | |
0206e353 | 4995 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4996 | { |
4997 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4998 | struct intel_encoder *intel_encoder; |
4999 | struct intel_dp *intel_dp; | |
e3421a18 | 5000 | |
fa90ecef PZ |
5001 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
5002 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 5003 | |
fa90ecef PZ |
5004 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
5005 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 5006 | return intel_dp->output_reg; |
e3421a18 | 5007 | } |
ea5b213a | 5008 | |
e3421a18 ZW |
5009 | return -1; |
5010 | } | |
5011 | ||
36e83a18 | 5012 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 5013 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
5014 | { |
5015 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 5016 | union child_device_config *p_child; |
36e83a18 | 5017 | int i; |
5d8a7752 VS |
5018 | static const short port_mapping[] = { |
5019 | [PORT_B] = PORT_IDPB, | |
5020 | [PORT_C] = PORT_IDPC, | |
5021 | [PORT_D] = PORT_IDPD, | |
5022 | }; | |
36e83a18 | 5023 | |
3b32a35b VS |
5024 | if (port == PORT_A) |
5025 | return true; | |
5026 | ||
41aa3448 | 5027 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
5028 | return false; |
5029 | ||
41aa3448 RV |
5030 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
5031 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 5032 | |
5d8a7752 | 5033 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
5034 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
5035 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
5036 | return true; |
5037 | } | |
5038 | return false; | |
5039 | } | |
5040 | ||
0e32b39c | 5041 | void |
f684960e CW |
5042 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
5043 | { | |
53b41837 YN |
5044 | struct intel_connector *intel_connector = to_intel_connector(connector); |
5045 | ||
3f43c48d | 5046 | intel_attach_force_audio_property(connector); |
e953fd7b | 5047 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 5048 | intel_dp->color_range_auto = true; |
53b41837 YN |
5049 | |
5050 | if (is_edp(intel_dp)) { | |
5051 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
5052 | drm_object_attach_property( |
5053 | &connector->base, | |
53b41837 | 5054 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
5055 | DRM_MODE_SCALE_ASPECT); |
5056 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 5057 | } |
f684960e CW |
5058 | } |
5059 | ||
dada1a9f ID |
5060 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
5061 | { | |
5062 | intel_dp->last_power_cycle = jiffies; | |
5063 | intel_dp->last_power_on = jiffies; | |
5064 | intel_dp->last_backlight_off = jiffies; | |
5065 | } | |
5066 | ||
67a54566 DV |
5067 | static void |
5068 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 5069 | struct intel_dp *intel_dp) |
67a54566 DV |
5070 | { |
5071 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
5072 | struct edp_power_seq cur, vbt, spec, |
5073 | *final = &intel_dp->pps_delays; | |
67a54566 | 5074 | u32 pp_on, pp_off, pp_div, pp; |
bf13e81b | 5075 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 5076 | |
e39b999a VS |
5077 | lockdep_assert_held(&dev_priv->pps_mutex); |
5078 | ||
81ddbc69 VS |
5079 | /* already initialized? */ |
5080 | if (final->t11_t12 != 0) | |
5081 | return; | |
5082 | ||
453c5420 | 5083 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 5084 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
5085 | pp_on_reg = PCH_PP_ON_DELAYS; |
5086 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5087 | pp_div_reg = PCH_PP_DIVISOR; | |
5088 | } else { | |
bf13e81b JN |
5089 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5090 | ||
5091 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
5092 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5093 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5094 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 5095 | } |
67a54566 DV |
5096 | |
5097 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
5098 | * the very first thing. */ | |
453c5420 | 5099 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 5100 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 5101 | |
453c5420 JB |
5102 | pp_on = I915_READ(pp_on_reg); |
5103 | pp_off = I915_READ(pp_off_reg); | |
5104 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
5105 | |
5106 | /* Pull timing values out of registers */ | |
5107 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
5108 | PANEL_POWER_UP_DELAY_SHIFT; | |
5109 | ||
5110 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
5111 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
5112 | ||
5113 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
5114 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
5115 | ||
5116 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
5117 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
5118 | ||
5119 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
5120 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
5121 | ||
5122 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5123 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
5124 | ||
41aa3448 | 5125 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
5126 | |
5127 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
5128 | * our hw here, which are all in 100usec. */ | |
5129 | spec.t1_t3 = 210 * 10; | |
5130 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
5131 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
5132 | spec.t10 = 500 * 10; | |
5133 | /* This one is special and actually in units of 100ms, but zero | |
5134 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
5135 | * table multiplies it with 1000 to make it in units of 100usec, | |
5136 | * too. */ | |
5137 | spec.t11_t12 = (510 + 100) * 10; | |
5138 | ||
5139 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5140 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
5141 | ||
5142 | /* Use the max of the register settings and vbt. If both are | |
5143 | * unset, fall back to the spec limits. */ | |
36b5f425 | 5144 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
5145 | spec.field : \ |
5146 | max(cur.field, vbt.field)) | |
5147 | assign_final(t1_t3); | |
5148 | assign_final(t8); | |
5149 | assign_final(t9); | |
5150 | assign_final(t10); | |
5151 | assign_final(t11_t12); | |
5152 | #undef assign_final | |
5153 | ||
36b5f425 | 5154 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
5155 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5156 | intel_dp->backlight_on_delay = get_delay(t8); | |
5157 | intel_dp->backlight_off_delay = get_delay(t9); | |
5158 | intel_dp->panel_power_down_delay = get_delay(t10); | |
5159 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
5160 | #undef get_delay | |
5161 | ||
f30d26e4 JN |
5162 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
5163 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
5164 | intel_dp->panel_power_cycle_delay); | |
5165 | ||
5166 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
5167 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
5168 | } |
5169 | ||
5170 | static void | |
5171 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 5172 | struct intel_dp *intel_dp) |
f30d26e4 JN |
5173 | { |
5174 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
5175 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
5176 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
5177 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 5178 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 5179 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 5180 | |
e39b999a | 5181 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
5182 | |
5183 | if (HAS_PCH_SPLIT(dev)) { | |
5184 | pp_on_reg = PCH_PP_ON_DELAYS; | |
5185 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5186 | pp_div_reg = PCH_PP_DIVISOR; | |
5187 | } else { | |
bf13e81b JN |
5188 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5189 | ||
5190 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5191 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5192 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
5193 | } |
5194 | ||
b2f19d1a PZ |
5195 | /* |
5196 | * And finally store the new values in the power sequencer. The | |
5197 | * backlight delays are set to 1 because we do manual waits on them. For | |
5198 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
5199 | * we'll end up waiting for the backlight off delay twice: once when we | |
5200 | * do the manual sleep, and once when we disable the panel and wait for | |
5201 | * the PP_STATUS bit to become zero. | |
5202 | */ | |
f30d26e4 | 5203 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
5204 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5205 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 5206 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
5207 | /* Compute the divisor for the pp clock, simply match the Bspec |
5208 | * formula. */ | |
453c5420 | 5209 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 5210 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
5211 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
5212 | ||
5213 | /* Haswell doesn't have any port selection bits for the panel | |
5214 | * power sequencer any more. */ | |
bc7d38a4 | 5215 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 5216 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 5217 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 5218 | if (port == PORT_A) |
a24c144c | 5219 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 5220 | else |
a24c144c | 5221 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
5222 | } |
5223 | ||
453c5420 JB |
5224 | pp_on |= port_sel; |
5225 | ||
5226 | I915_WRITE(pp_on_reg, pp_on); | |
5227 | I915_WRITE(pp_off_reg, pp_off); | |
5228 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 5229 | |
67a54566 | 5230 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
5231 | I915_READ(pp_on_reg), |
5232 | I915_READ(pp_off_reg), | |
5233 | I915_READ(pp_div_reg)); | |
f684960e CW |
5234 | } |
5235 | ||
b33a2815 VK |
5236 | /** |
5237 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
5238 | * @dev: DRM device | |
5239 | * @refresh_rate: RR to be programmed | |
5240 | * | |
5241 | * This function gets called when refresh rate (RR) has to be changed from | |
5242 | * one frequency to another. Switches can be between high and low RR | |
5243 | * supported by the panel or to any other RR based on media playback (in | |
5244 | * this case, RR value needs to be passed from user space). | |
5245 | * | |
5246 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
5247 | */ | |
96178eeb | 5248 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
5249 | { |
5250 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5251 | struct intel_encoder *encoder; | |
96178eeb VK |
5252 | struct intel_digital_port *dig_port = NULL; |
5253 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 5254 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 5255 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 5256 | u32 reg, val; |
96178eeb | 5257 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
5258 | |
5259 | if (refresh_rate <= 0) { | |
5260 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
5261 | return; | |
5262 | } | |
5263 | ||
96178eeb VK |
5264 | if (intel_dp == NULL) { |
5265 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
5266 | return; |
5267 | } | |
5268 | ||
1fcc9d1c | 5269 | /* |
e4d59f6b RV |
5270 | * FIXME: This needs proper synchronization with psr state for some |
5271 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 5272 | */ |
439d7ac0 | 5273 | |
96178eeb VK |
5274 | dig_port = dp_to_dig_port(intel_dp); |
5275 | encoder = &dig_port->base; | |
723f9aab | 5276 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
439d7ac0 PB |
5277 | |
5278 | if (!intel_crtc) { | |
5279 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
5280 | return; | |
5281 | } | |
5282 | ||
6e3c9717 | 5283 | config = intel_crtc->config; |
439d7ac0 | 5284 | |
96178eeb | 5285 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
5286 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5287 | return; | |
5288 | } | |
5289 | ||
96178eeb VK |
5290 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5291 | refresh_rate) | |
439d7ac0 PB |
5292 | index = DRRS_LOW_RR; |
5293 | ||
96178eeb | 5294 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
5295 | DRM_DEBUG_KMS( |
5296 | "DRRS requested for previously set RR...ignoring\n"); | |
5297 | return; | |
5298 | } | |
5299 | ||
5300 | if (!intel_crtc->active) { | |
5301 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
5302 | return; | |
5303 | } | |
5304 | ||
44395bfe | 5305 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
5306 | switch (index) { |
5307 | case DRRS_HIGH_RR: | |
5308 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
5309 | break; | |
5310 | case DRRS_LOW_RR: | |
5311 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
5312 | break; | |
5313 | case DRRS_MAX_RR: | |
5314 | default: | |
5315 | DRM_ERROR("Unsupported refreshrate type\n"); | |
5316 | } | |
5317 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 5318 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 5319 | val = I915_READ(reg); |
a4c30b1d | 5320 | |
439d7ac0 | 5321 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
5322 | if (IS_VALLEYVIEW(dev)) |
5323 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5324 | else | |
5325 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 5326 | } else { |
6fa7aec1 VK |
5327 | if (IS_VALLEYVIEW(dev)) |
5328 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5329 | else | |
5330 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5331 | } |
5332 | I915_WRITE(reg, val); | |
5333 | } | |
5334 | ||
4e9ac947 VK |
5335 | dev_priv->drrs.refresh_rate_type = index; |
5336 | ||
5337 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5338 | } | |
5339 | ||
b33a2815 VK |
5340 | /** |
5341 | * intel_edp_drrs_enable - init drrs struct if supported | |
5342 | * @intel_dp: DP struct | |
5343 | * | |
5344 | * Initializes frontbuffer_bits and drrs.dp | |
5345 | */ | |
c395578e VK |
5346 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5347 | { | |
5348 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5349 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5350 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5351 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5352 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5353 | ||
5354 | if (!intel_crtc->config->has_drrs) { | |
5355 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5356 | return; | |
5357 | } | |
5358 | ||
5359 | mutex_lock(&dev_priv->drrs.mutex); | |
5360 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5361 | DRM_ERROR("DRRS already enabled\n"); | |
5362 | goto unlock; | |
5363 | } | |
5364 | ||
5365 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5366 | ||
5367 | dev_priv->drrs.dp = intel_dp; | |
5368 | ||
5369 | unlock: | |
5370 | mutex_unlock(&dev_priv->drrs.mutex); | |
5371 | } | |
5372 | ||
b33a2815 VK |
5373 | /** |
5374 | * intel_edp_drrs_disable - Disable DRRS | |
5375 | * @intel_dp: DP struct | |
5376 | * | |
5377 | */ | |
c395578e VK |
5378 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5379 | { | |
5380 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5381 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5382 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5383 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5384 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5385 | ||
5386 | if (!intel_crtc->config->has_drrs) | |
5387 | return; | |
5388 | ||
5389 | mutex_lock(&dev_priv->drrs.mutex); | |
5390 | if (!dev_priv->drrs.dp) { | |
5391 | mutex_unlock(&dev_priv->drrs.mutex); | |
5392 | return; | |
5393 | } | |
5394 | ||
5395 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5396 | intel_dp_set_drrs_state(dev_priv->dev, | |
5397 | intel_dp->attached_connector->panel. | |
5398 | fixed_mode->vrefresh); | |
5399 | ||
5400 | dev_priv->drrs.dp = NULL; | |
5401 | mutex_unlock(&dev_priv->drrs.mutex); | |
5402 | ||
5403 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5404 | } | |
5405 | ||
4e9ac947 VK |
5406 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5407 | { | |
5408 | struct drm_i915_private *dev_priv = | |
5409 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5410 | struct intel_dp *intel_dp; | |
5411 | ||
5412 | mutex_lock(&dev_priv->drrs.mutex); | |
5413 | ||
5414 | intel_dp = dev_priv->drrs.dp; | |
5415 | ||
5416 | if (!intel_dp) | |
5417 | goto unlock; | |
5418 | ||
439d7ac0 | 5419 | /* |
4e9ac947 VK |
5420 | * The delayed work can race with an invalidate hence we need to |
5421 | * recheck. | |
439d7ac0 PB |
5422 | */ |
5423 | ||
4e9ac947 VK |
5424 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5425 | goto unlock; | |
439d7ac0 | 5426 | |
4e9ac947 VK |
5427 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5428 | intel_dp_set_drrs_state(dev_priv->dev, | |
5429 | intel_dp->attached_connector->panel. | |
5430 | downclock_mode->vrefresh); | |
439d7ac0 | 5431 | |
4e9ac947 | 5432 | unlock: |
4e9ac947 | 5433 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5434 | } |
5435 | ||
b33a2815 VK |
5436 | /** |
5437 | * intel_edp_drrs_invalidate - Invalidate DRRS | |
5438 | * @dev: DRM device | |
5439 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5440 | * | |
5441 | * When there is a disturbance on screen (due to cursor movement/time | |
5442 | * update etc), DRRS needs to be invalidated, i.e. need to switch to | |
5443 | * high RR. | |
5444 | * | |
5445 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5446 | */ | |
a93fad0f VK |
5447 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5448 | unsigned frontbuffer_bits) | |
5449 | { | |
5450 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5451 | struct drm_crtc *crtc; | |
5452 | enum pipe pipe; | |
5453 | ||
9da7d693 | 5454 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5455 | return; |
5456 | ||
88f933a8 | 5457 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5458 | |
a93fad0f | 5459 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5460 | if (!dev_priv->drrs.dp) { |
5461 | mutex_unlock(&dev_priv->drrs.mutex); | |
5462 | return; | |
5463 | } | |
5464 | ||
a93fad0f VK |
5465 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5466 | pipe = to_intel_crtc(crtc)->pipe; | |
5467 | ||
5468 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) { | |
a93fad0f VK |
5469 | intel_dp_set_drrs_state(dev_priv->dev, |
5470 | dev_priv->drrs.dp->attached_connector->panel. | |
5471 | fixed_mode->vrefresh); | |
5472 | } | |
5473 | ||
5474 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
5475 | ||
5476 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5477 | mutex_unlock(&dev_priv->drrs.mutex); | |
5478 | } | |
5479 | ||
b33a2815 VK |
5480 | /** |
5481 | * intel_edp_drrs_flush - Flush DRRS | |
5482 | * @dev: DRM device | |
5483 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5484 | * | |
5485 | * When there is no movement on screen, DRRS work can be scheduled. | |
5486 | * This DRRS work is responsible for setting relevant registers after a | |
5487 | * timeout of 1 second. | |
5488 | * | |
5489 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5490 | */ | |
a93fad0f VK |
5491 | void intel_edp_drrs_flush(struct drm_device *dev, |
5492 | unsigned frontbuffer_bits) | |
5493 | { | |
5494 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5495 | struct drm_crtc *crtc; | |
5496 | enum pipe pipe; | |
5497 | ||
9da7d693 | 5498 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5499 | return; |
5500 | ||
88f933a8 | 5501 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5502 | |
a93fad0f | 5503 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5504 | if (!dev_priv->drrs.dp) { |
5505 | mutex_unlock(&dev_priv->drrs.mutex); | |
5506 | return; | |
5507 | } | |
5508 | ||
a93fad0f VK |
5509 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5510 | pipe = to_intel_crtc(crtc)->pipe; | |
5511 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
5512 | ||
a93fad0f VK |
5513 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR && |
5514 | !dev_priv->drrs.busy_frontbuffer_bits) | |
5515 | schedule_delayed_work(&dev_priv->drrs.work, | |
5516 | msecs_to_jiffies(1000)); | |
5517 | mutex_unlock(&dev_priv->drrs.mutex); | |
5518 | } | |
5519 | ||
b33a2815 VK |
5520 | /** |
5521 | * DOC: Display Refresh Rate Switching (DRRS) | |
5522 | * | |
5523 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5524 | * which enables swtching between low and high refresh rates, | |
5525 | * dynamically, based on the usage scenario. This feature is applicable | |
5526 | * for internal panels. | |
5527 | * | |
5528 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5529 | * would list multiple refresh rates for one resolution. | |
5530 | * | |
5531 | * DRRS is of 2 types - static and seamless. | |
5532 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5533 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5534 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5535 | * and can be used during normal system usage. This is done by programming | |
5536 | * certain registers. | |
5537 | * | |
5538 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5539 | * inputs from the panel spec. | |
5540 | * | |
5541 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5542 | * | |
5543 | * eDP DRRS:- | |
5544 | * The implementation is based on frontbuffer tracking implementation. | |
5545 | * When there is a disturbance on the screen triggered by user activity or a | |
5546 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5547 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5548 | * to low RR is made. | |
5549 | * For integration with frontbuffer tracking code, | |
5550 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5551 | * | |
5552 | * DRRS can be further extended to support other internal panels and also | |
5553 | * the scenario of video playback wherein RR is set based on the rate | |
5554 | * requested by userspace. | |
5555 | */ | |
5556 | ||
5557 | /** | |
5558 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5559 | * @intel_connector: eDP connector | |
5560 | * @fixed_mode: preferred mode of panel | |
5561 | * | |
5562 | * This function is called only once at driver load to initialize basic | |
5563 | * DRRS stuff. | |
5564 | * | |
5565 | * Returns: | |
5566 | * Downclock mode if panel supports it, else return NULL. | |
5567 | * DRRS support is determined by the presence of downclock mode (apart | |
5568 | * from VBT setting). | |
5569 | */ | |
4f9db5b5 | 5570 | static struct drm_display_mode * |
96178eeb VK |
5571 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5572 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5573 | { |
5574 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5575 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5576 | struct drm_i915_private *dev_priv = dev->dev_private; |
5577 | struct drm_display_mode *downclock_mode = NULL; | |
5578 | ||
9da7d693 DV |
5579 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5580 | mutex_init(&dev_priv->drrs.mutex); | |
5581 | ||
4f9db5b5 PB |
5582 | if (INTEL_INFO(dev)->gen <= 6) { |
5583 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5584 | return NULL; | |
5585 | } | |
5586 | ||
5587 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5588 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5589 | return NULL; |
5590 | } | |
5591 | ||
5592 | downclock_mode = intel_find_panel_downclock | |
5593 | (dev, fixed_mode, connector); | |
5594 | ||
5595 | if (!downclock_mode) { | |
a1d26342 | 5596 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5597 | return NULL; |
5598 | } | |
5599 | ||
96178eeb | 5600 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5601 | |
96178eeb | 5602 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5603 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5604 | return downclock_mode; |
5605 | } | |
5606 | ||
ed92f0b2 | 5607 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5608 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5609 | { |
5610 | struct drm_connector *connector = &intel_connector->base; | |
5611 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5612 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5613 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5614 | struct drm_i915_private *dev_priv = dev->dev_private; |
5615 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5616 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5617 | bool has_dpcd; |
5618 | struct drm_display_mode *scan; | |
5619 | struct edid *edid; | |
6517d273 | 5620 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 PZ |
5621 | |
5622 | if (!is_edp(intel_dp)) | |
5623 | return true; | |
5624 | ||
49e6bc51 VS |
5625 | pps_lock(intel_dp); |
5626 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5627 | pps_unlock(intel_dp); | |
63635217 | 5628 | |
ed92f0b2 | 5629 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5630 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5631 | |
5632 | if (has_dpcd) { | |
5633 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5634 | dev_priv->no_aux_handshake = | |
5635 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5636 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5637 | } else { | |
5638 | /* if this fails, presume the device is a ghost */ | |
5639 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5640 | return false; |
5641 | } | |
5642 | ||
5643 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5644 | pps_lock(intel_dp); |
36b5f425 | 5645 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5646 | pps_unlock(intel_dp); |
ed92f0b2 | 5647 | |
060c8778 | 5648 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5649 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5650 | if (edid) { |
5651 | if (drm_add_edid_modes(connector, edid)) { | |
5652 | drm_mode_connector_update_edid_property(connector, | |
5653 | edid); | |
5654 | drm_edid_to_eld(connector, edid); | |
5655 | } else { | |
5656 | kfree(edid); | |
5657 | edid = ERR_PTR(-EINVAL); | |
5658 | } | |
5659 | } else { | |
5660 | edid = ERR_PTR(-ENOENT); | |
5661 | } | |
5662 | intel_connector->edid = edid; | |
5663 | ||
5664 | /* prefer fixed mode from EDID if available */ | |
5665 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5666 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5667 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5668 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5669 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5670 | break; |
5671 | } | |
5672 | } | |
5673 | ||
5674 | /* fallback to VBT if available for eDP */ | |
5675 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5676 | fixed_mode = drm_mode_duplicate(dev, | |
5677 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5678 | if (fixed_mode) | |
5679 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5680 | } | |
060c8778 | 5681 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5682 | |
01527b31 CT |
5683 | if (IS_VALLEYVIEW(dev)) { |
5684 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5685 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5686 | |
5687 | /* | |
5688 | * Figure out the current pipe for the initial backlight setup. | |
5689 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5690 | * fails just assume pipe A. | |
5691 | */ | |
5692 | if (IS_CHERRYVIEW(dev)) | |
5693 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5694 | else | |
5695 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5696 | ||
5697 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5698 | pipe = intel_dp->pps_pipe; | |
5699 | ||
5700 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5701 | pipe = PIPE_A; | |
5702 | ||
5703 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5704 | pipe_name(pipe)); | |
01527b31 CT |
5705 | } |
5706 | ||
4f9db5b5 | 5707 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5708 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
6517d273 | 5709 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5710 | |
5711 | return true; | |
5712 | } | |
5713 | ||
16c25533 | 5714 | bool |
f0fec3f2 PZ |
5715 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5716 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5717 | { |
f0fec3f2 PZ |
5718 | struct drm_connector *connector = &intel_connector->base; |
5719 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5720 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5721 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5722 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5723 | enum port port = intel_dig_port->port; |
0b99836f | 5724 | int type; |
a4fc5ed6 | 5725 | |
a4a5d2f8 VS |
5726 | intel_dp->pps_pipe = INVALID_PIPE; |
5727 | ||
ec5b01dd | 5728 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5729 | if (INTEL_INFO(dev)->gen >= 9) |
5730 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5731 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5732 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5733 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5734 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5735 | else if (HAS_PCH_SPLIT(dev)) | |
5736 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5737 | else | |
5738 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5739 | ||
b9ca5fad DL |
5740 | if (INTEL_INFO(dev)->gen >= 9) |
5741 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5742 | else | |
5743 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5744 | |
0767935e DV |
5745 | /* Preserve the current hw state. */ |
5746 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5747 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5748 | |
3b32a35b | 5749 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5750 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5751 | else |
5752 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5753 | |
f7d24902 ID |
5754 | /* |
5755 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5756 | * for DP the encoder type can be set by the caller to | |
5757 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5758 | */ | |
5759 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5760 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5761 | ||
c17ed5b5 VS |
5762 | /* eDP only on port B and/or C on vlv/chv */ |
5763 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5764 | port != PORT_B && port != PORT_C)) | |
5765 | return false; | |
5766 | ||
e7281eab ID |
5767 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5768 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5769 | port_name(port)); | |
5770 | ||
b329530c | 5771 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5772 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5773 | ||
a4fc5ed6 KP |
5774 | connector->interlace_allowed = true; |
5775 | connector->doublescan_allowed = 0; | |
5776 | ||
f0fec3f2 | 5777 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5778 | edp_panel_vdd_work); |
a4fc5ed6 | 5779 | |
df0e9248 | 5780 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5781 | drm_connector_register(connector); |
a4fc5ed6 | 5782 | |
affa9354 | 5783 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5784 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5785 | else | |
5786 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5787 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5788 | |
0b99836f | 5789 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5790 | switch (port) { |
5791 | case PORT_A: | |
1d843f9d | 5792 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5793 | break; |
5794 | case PORT_B: | |
1d843f9d | 5795 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5796 | break; |
5797 | case PORT_C: | |
1d843f9d | 5798 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5799 | break; |
5800 | case PORT_D: | |
1d843f9d | 5801 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5802 | break; |
5803 | default: | |
ad1c0b19 | 5804 | BUG(); |
5eb08b69 ZW |
5805 | } |
5806 | ||
dada1a9f | 5807 | if (is_edp(intel_dp)) { |
773538e8 | 5808 | pps_lock(intel_dp); |
1e74a324 VS |
5809 | intel_dp_init_panel_power_timestamps(intel_dp); |
5810 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 5811 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 5812 | else |
36b5f425 | 5813 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 5814 | pps_unlock(intel_dp); |
dada1a9f | 5815 | } |
0095e6dc | 5816 | |
9d1a1031 | 5817 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5818 | |
0e32b39c | 5819 | /* init MST on ports that can support it */ |
0c9b3715 JN |
5820 | if (HAS_DP_MST(dev) && |
5821 | (port == PORT_B || port == PORT_C || port == PORT_D)) | |
5822 | intel_dp_mst_encoder_init(intel_dig_port, | |
5823 | intel_connector->base.base.id); | |
0e32b39c | 5824 | |
36b5f425 | 5825 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 5826 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5827 | if (is_edp(intel_dp)) { |
5828 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5829 | /* |
5830 | * vdd might still be enabled do to the delayed vdd off. | |
5831 | * Make sure vdd is actually turned off here. | |
5832 | */ | |
773538e8 | 5833 | pps_lock(intel_dp); |
4be73780 | 5834 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5835 | pps_unlock(intel_dp); |
15b1d171 | 5836 | } |
34ea3d38 | 5837 | drm_connector_unregister(connector); |
b2f246a8 | 5838 | drm_connector_cleanup(connector); |
16c25533 | 5839 | return false; |
b2f246a8 | 5840 | } |
32f9d658 | 5841 | |
f684960e CW |
5842 | intel_dp_add_properties(intel_dp, connector); |
5843 | ||
a4fc5ed6 KP |
5844 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5845 | * 0xd. Failure to do so will result in spurious interrupts being | |
5846 | * generated on the port when a cable is not attached. | |
5847 | */ | |
5848 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5849 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5850 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5851 | } | |
16c25533 | 5852 | |
aa7471d2 JN |
5853 | i915_debugfs_connector_add(connector); |
5854 | ||
16c25533 | 5855 | return true; |
a4fc5ed6 | 5856 | } |
f0fec3f2 PZ |
5857 | |
5858 | void | |
5859 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5860 | { | |
13cf5504 | 5861 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5862 | struct intel_digital_port *intel_dig_port; |
5863 | struct intel_encoder *intel_encoder; | |
5864 | struct drm_encoder *encoder; | |
5865 | struct intel_connector *intel_connector; | |
5866 | ||
b14c5679 | 5867 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5868 | if (!intel_dig_port) |
5869 | return; | |
5870 | ||
08d9bc92 | 5871 | intel_connector = intel_connector_alloc(); |
f0fec3f2 PZ |
5872 | if (!intel_connector) { |
5873 | kfree(intel_dig_port); | |
5874 | return; | |
5875 | } | |
5876 | ||
5877 | intel_encoder = &intel_dig_port->base; | |
5878 | encoder = &intel_encoder->base; | |
5879 | ||
5880 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5881 | DRM_MODE_ENCODER_TMDS); | |
5882 | ||
5bfe2ac0 | 5883 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5884 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5885 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5886 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5887 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5888 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5889 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5890 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5891 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5892 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5893 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5894 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5895 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5896 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5897 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5898 | } else { |
ecff4f3b JN |
5899 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5900 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5901 | if (INTEL_INFO(dev)->gen >= 5) |
5902 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5903 | } |
f0fec3f2 | 5904 | |
174edf1f | 5905 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5906 | intel_dig_port->dp.output_reg = output_reg; |
5907 | ||
00c09d70 | 5908 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5909 | if (IS_CHERRYVIEW(dev)) { |
5910 | if (port == PORT_D) | |
5911 | intel_encoder->crtc_mask = 1 << 2; | |
5912 | else | |
5913 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5914 | } else { | |
5915 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5916 | } | |
bc079e8b | 5917 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5918 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5919 | ||
13cf5504 DA |
5920 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5921 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5922 | ||
15b1d171 PZ |
5923 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5924 | drm_encoder_cleanup(encoder); | |
5925 | kfree(intel_dig_port); | |
b2f246a8 | 5926 | kfree(intel_connector); |
15b1d171 | 5927 | } |
f0fec3f2 | 5928 | } |
0e32b39c DA |
5929 | |
5930 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5931 | { | |
5932 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5933 | int i; | |
5934 | ||
5935 | /* disable MST */ | |
5936 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5937 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5938 | if (!intel_dig_port) | |
5939 | continue; | |
5940 | ||
5941 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5942 | if (!intel_dig_port->dp.can_mst) | |
5943 | continue; | |
5944 | if (intel_dig_port->dp.is_mst) | |
5945 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5946 | } | |
5947 | } | |
5948 | } | |
5949 | ||
5950 | void intel_dp_mst_resume(struct drm_device *dev) | |
5951 | { | |
5952 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5953 | int i; | |
5954 | ||
5955 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5956 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5957 | if (!intel_dig_port) | |
5958 | continue; | |
5959 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5960 | int ret; | |
5961 | ||
5962 | if (!intel_dig_port->dp.can_mst) | |
5963 | continue; | |
5964 | ||
5965 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5966 | if (ret != 0) { | |
5967 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5968 | } | |
5969 | } | |
5970 | } | |
5971 | } |