]>
Commit | Line | Data |
---|---|---|
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 | 50 | struct dp_link_dpll { |
840b32b7 | 51 | int clock; |
9dd4ffdf CML |
52 | struct dpll dpll; |
53 | }; | |
54 | ||
55 | static const struct dp_link_dpll gen4_dpll[] = { | |
840b32b7 | 56 | { 162000, |
9dd4ffdf | 57 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, |
840b32b7 | 58 | { 270000, |
9dd4ffdf CML |
59 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } |
60 | }; | |
61 | ||
62 | static const struct dp_link_dpll pch_dpll[] = { | |
840b32b7 | 63 | { 162000, |
9dd4ffdf | 64 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, |
840b32b7 | 65 | { 270000, |
9dd4ffdf CML |
66 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } |
67 | }; | |
68 | ||
65ce4bf5 | 69 | static const struct dp_link_dpll vlv_dpll[] = { |
840b32b7 | 70 | { 162000, |
58f6e632 | 71 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
840b32b7 | 72 | { 270000, |
65ce4bf5 CML |
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 | */ | |
840b32b7 | 86 | { 162000, /* m2_int = 32, m2_fraction = 1677722 */ |
ef9348c8 | 87 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, |
840b32b7 | 88 | { 270000, /* m2_int = 27, m2_fraction = 0 */ |
ef9348c8 | 89 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, |
840b32b7 | 90 | { 540000, /* m2_int = 27, m2_fraction = 0 */ |
ef9348c8 CML |
91 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } |
92 | }; | |
637a9c63 | 93 | |
64987fc5 SJ |
94 | static const int bxt_rates[] = { 162000, 216000, 243000, 270000, |
95 | 324000, 432000, 540000 }; | |
637a9c63 | 96 | static const int skl_rates[] = { 162000, 216000, 270000, |
f4896f15 | 97 | 324000, 432000, 540000 }; |
fe51bfb9 VS |
98 | static const int chv_rates[] = { 162000, 202500, 210000, 216000, |
99 | 243000, 270000, 324000, 405000, | |
100 | 420000, 432000, 540000 }; | |
f4896f15 | 101 | static const int default_rates[] = { 162000, 270000, 540000 }; |
ef9348c8 | 102 | |
cfcb0fc9 JB |
103 | /** |
104 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
105 | * @intel_dp: DP struct | |
106 | * | |
107 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
108 | * will return true, and false otherwise. | |
109 | */ | |
110 | static bool is_edp(struct intel_dp *intel_dp) | |
111 | { | |
da63a9f2 PZ |
112 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
113 | ||
114 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
115 | } |
116 | ||
68b4d824 | 117 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 118 | { |
68b4d824 ID |
119 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
120 | ||
121 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
122 | } |
123 | ||
df0e9248 CW |
124 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
125 | { | |
fa90ecef | 126 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
127 | } |
128 | ||
ea5b213a | 129 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 130 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 131 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
093e3f13 | 132 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a8c3344e VS |
133 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
134 | enum pipe pipe); | |
a4fc5ed6 | 135 | |
ed4e9c1d VS |
136 | static int |
137 | intel_dp_max_link_bw(struct intel_dp *intel_dp) | |
a4fc5ed6 | 138 | { |
7183dc29 | 139 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
140 | |
141 | switch (max_link_bw) { | |
142 | case DP_LINK_BW_1_62: | |
143 | case DP_LINK_BW_2_7: | |
1db10e28 | 144 | case DP_LINK_BW_5_4: |
d4eead50 | 145 | break; |
a4fc5ed6 | 146 | default: |
d4eead50 ID |
147 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
148 | max_link_bw); | |
a4fc5ed6 KP |
149 | max_link_bw = DP_LINK_BW_1_62; |
150 | break; | |
151 | } | |
152 | return max_link_bw; | |
153 | } | |
154 | ||
eeb6324d PZ |
155 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
156 | { | |
157 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
158 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
159 | u8 source_max, sink_max; | |
160 | ||
161 | source_max = 4; | |
162 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
163 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
164 | source_max = 2; | |
165 | ||
166 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
167 | ||
168 | return min(source_max, sink_max); | |
169 | } | |
170 | ||
cd9dde44 AJ |
171 | /* |
172 | * The units on the numbers in the next two are... bizarre. Examples will | |
173 | * make it clearer; this one parallels an example in the eDP spec. | |
174 | * | |
175 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
176 | * | |
177 | * 270000 * 1 * 8 / 10 == 216000 | |
178 | * | |
179 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
180 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
181 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
182 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
183 | * | |
184 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
185 | * get the result in decakilobits instead of kilobits. | |
186 | */ | |
187 | ||
a4fc5ed6 | 188 | static int |
c898261c | 189 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 190 | { |
cd9dde44 | 191 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
192 | } |
193 | ||
fe27d53e DA |
194 | static int |
195 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
196 | { | |
197 | return (max_link_clock * max_lanes * 8) / 10; | |
198 | } | |
199 | ||
c19de8eb | 200 | static enum drm_mode_status |
a4fc5ed6 KP |
201 | intel_dp_mode_valid(struct drm_connector *connector, |
202 | struct drm_display_mode *mode) | |
203 | { | |
df0e9248 | 204 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
205 | struct intel_connector *intel_connector = to_intel_connector(connector); |
206 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
207 | int target_clock = mode->clock; |
208 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 209 | |
dd06f90e JN |
210 | if (is_edp(intel_dp) && fixed_mode) { |
211 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
212 | return MODE_PANEL; |
213 | ||
dd06f90e | 214 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 215 | return MODE_PANEL; |
03afc4a2 DV |
216 | |
217 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
218 | } |
219 | ||
50fec21a | 220 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 221 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
222 | |
223 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
224 | mode_rate = intel_dp_link_required(target_clock, 18); | |
225 | ||
226 | if (mode_rate > max_rate) | |
c4867936 | 227 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
228 | |
229 | if (mode->clock < 10000) | |
230 | return MODE_CLOCK_LOW; | |
231 | ||
0af78a2b DV |
232 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
233 | return MODE_H_ILLEGAL; | |
234 | ||
a4fc5ed6 KP |
235 | return MODE_OK; |
236 | } | |
237 | ||
a4f1289e | 238 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
239 | { |
240 | int i; | |
241 | uint32_t v = 0; | |
242 | ||
243 | if (src_bytes > 4) | |
244 | src_bytes = 4; | |
245 | for (i = 0; i < src_bytes; i++) | |
246 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
247 | return v; | |
248 | } | |
249 | ||
c2af70e2 | 250 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
251 | { |
252 | int i; | |
253 | if (dst_bytes > 4) | |
254 | dst_bytes = 4; | |
255 | for (i = 0; i < dst_bytes; i++) | |
256 | dst[i] = src >> ((3-i) * 8); | |
257 | } | |
258 | ||
fb0f8fbf KP |
259 | /* hrawclock is 1/4 the FSB frequency */ |
260 | static int | |
261 | intel_hrawclk(struct drm_device *dev) | |
262 | { | |
263 | struct drm_i915_private *dev_priv = dev->dev_private; | |
264 | uint32_t clkcfg; | |
265 | ||
9473c8f4 VP |
266 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
267 | if (IS_VALLEYVIEW(dev)) | |
268 | return 200; | |
269 | ||
fb0f8fbf KP |
270 | clkcfg = I915_READ(CLKCFG); |
271 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
272 | case CLKCFG_FSB_400: | |
273 | return 100; | |
274 | case CLKCFG_FSB_533: | |
275 | return 133; | |
276 | case CLKCFG_FSB_667: | |
277 | return 166; | |
278 | case CLKCFG_FSB_800: | |
279 | return 200; | |
280 | case CLKCFG_FSB_1067: | |
281 | return 266; | |
282 | case CLKCFG_FSB_1333: | |
283 | return 333; | |
284 | /* these two are just a guess; one of them might be right */ | |
285 | case CLKCFG_FSB_1600: | |
286 | case CLKCFG_FSB_1600_ALT: | |
287 | return 400; | |
288 | default: | |
289 | return 133; | |
290 | } | |
291 | } | |
292 | ||
bf13e81b JN |
293 | static void |
294 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 295 | struct intel_dp *intel_dp); |
bf13e81b JN |
296 | static void |
297 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 298 | struct intel_dp *intel_dp); |
bf13e81b | 299 | |
773538e8 VS |
300 | static void pps_lock(struct intel_dp *intel_dp) |
301 | { | |
302 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
303 | struct intel_encoder *encoder = &intel_dig_port->base; | |
304 | struct drm_device *dev = encoder->base.dev; | |
305 | struct drm_i915_private *dev_priv = dev->dev_private; | |
306 | enum intel_display_power_domain power_domain; | |
307 | ||
308 | /* | |
309 | * See vlv_power_sequencer_reset() why we need | |
310 | * a power domain reference here. | |
311 | */ | |
312 | power_domain = intel_display_port_power_domain(encoder); | |
313 | intel_display_power_get(dev_priv, power_domain); | |
314 | ||
315 | mutex_lock(&dev_priv->pps_mutex); | |
316 | } | |
317 | ||
318 | static void pps_unlock(struct intel_dp *intel_dp) | |
319 | { | |
320 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
321 | struct intel_encoder *encoder = &intel_dig_port->base; | |
322 | struct drm_device *dev = encoder->base.dev; | |
323 | struct drm_i915_private *dev_priv = dev->dev_private; | |
324 | enum intel_display_power_domain power_domain; | |
325 | ||
326 | mutex_unlock(&dev_priv->pps_mutex); | |
327 | ||
328 | power_domain = intel_display_port_power_domain(encoder); | |
329 | intel_display_power_put(dev_priv, power_domain); | |
330 | } | |
331 | ||
961a0db0 VS |
332 | static void |
333 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
334 | { | |
335 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
336 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
337 | struct drm_i915_private *dev_priv = dev->dev_private; | |
338 | enum pipe pipe = intel_dp->pps_pipe; | |
d288f65f | 339 | bool pll_enabled; |
961a0db0 VS |
340 | uint32_t DP; |
341 | ||
342 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
343 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
344 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
345 | return; | |
346 | ||
347 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
348 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
349 | ||
350 | /* Preserve the BIOS-computed detected bit. This is | |
351 | * supposed to be read-only. | |
352 | */ | |
353 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
354 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
355 | DP |= DP_PORT_WIDTH(1); | |
356 | DP |= DP_LINK_TRAIN_PAT_1; | |
357 | ||
358 | if (IS_CHERRYVIEW(dev)) | |
359 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
360 | else if (pipe == PIPE_B) | |
361 | DP |= DP_PIPEB_SELECT; | |
362 | ||
d288f65f VS |
363 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
364 | ||
365 | /* | |
366 | * The DPLL for the pipe must be enabled for this to work. | |
367 | * So enable temporarily it if it's not already enabled. | |
368 | */ | |
369 | if (!pll_enabled) | |
370 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? | |
371 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); | |
372 | ||
961a0db0 VS |
373 | /* |
374 | * Similar magic as in intel_dp_enable_port(). | |
375 | * We _must_ do this port enable + disable trick | |
376 | * to make this power seqeuencer lock onto the port. | |
377 | * Otherwise even VDD force bit won't work. | |
378 | */ | |
379 | I915_WRITE(intel_dp->output_reg, DP); | |
380 | POSTING_READ(intel_dp->output_reg); | |
381 | ||
382 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
383 | POSTING_READ(intel_dp->output_reg); | |
384 | ||
385 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
386 | POSTING_READ(intel_dp->output_reg); | |
d288f65f VS |
387 | |
388 | if (!pll_enabled) | |
389 | vlv_force_pll_off(dev, pipe); | |
961a0db0 VS |
390 | } |
391 | ||
bf13e81b JN |
392 | static enum pipe |
393 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
394 | { | |
395 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
396 | struct drm_device *dev = intel_dig_port->base.base.dev; |
397 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
398 | struct intel_encoder *encoder; |
399 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 400 | enum pipe pipe; |
bf13e81b | 401 | |
e39b999a | 402 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 403 | |
a8c3344e VS |
404 | /* We should never land here with regular DP ports */ |
405 | WARN_ON(!is_edp(intel_dp)); | |
406 | ||
a4a5d2f8 VS |
407 | if (intel_dp->pps_pipe != INVALID_PIPE) |
408 | return intel_dp->pps_pipe; | |
409 | ||
410 | /* | |
411 | * We don't have power sequencer currently. | |
412 | * Pick one that's not used by other ports. | |
413 | */ | |
414 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
415 | base.head) { | |
416 | struct intel_dp *tmp; | |
417 | ||
418 | if (encoder->type != INTEL_OUTPUT_EDP) | |
419 | continue; | |
420 | ||
421 | tmp = enc_to_intel_dp(&encoder->base); | |
422 | ||
423 | if (tmp->pps_pipe != INVALID_PIPE) | |
424 | pipes &= ~(1 << tmp->pps_pipe); | |
425 | } | |
426 | ||
427 | /* | |
428 | * Didn't find one. This should not happen since there | |
429 | * are two power sequencers and up to two eDP ports. | |
430 | */ | |
431 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
432 | pipe = PIPE_A; |
433 | else | |
434 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 435 | |
a8c3344e VS |
436 | vlv_steal_power_sequencer(dev, pipe); |
437 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
438 | |
439 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
440 | pipe_name(intel_dp->pps_pipe), | |
441 | port_name(intel_dig_port->port)); | |
442 | ||
443 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
444 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
445 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 446 | |
961a0db0 VS |
447 | /* |
448 | * Even vdd force doesn't work until we've made | |
449 | * the power sequencer lock in on the port. | |
450 | */ | |
451 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
452 | |
453 | return intel_dp->pps_pipe; | |
454 | } | |
455 | ||
6491ab27 VS |
456 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
457 | enum pipe pipe); | |
458 | ||
459 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
460 | enum pipe pipe) | |
461 | { | |
462 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
463 | } | |
464 | ||
465 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
466 | enum pipe pipe) | |
467 | { | |
468 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
469 | } | |
470 | ||
471 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
472 | enum pipe pipe) | |
473 | { | |
474 | return true; | |
475 | } | |
bf13e81b | 476 | |
a4a5d2f8 | 477 | static enum pipe |
6491ab27 VS |
478 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
479 | enum port port, | |
480 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
481 | { |
482 | enum pipe pipe; | |
bf13e81b | 483 | |
bf13e81b JN |
484 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
485 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
486 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
487 | |
488 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
489 | continue; | |
490 | ||
6491ab27 VS |
491 | if (!pipe_check(dev_priv, pipe)) |
492 | continue; | |
493 | ||
a4a5d2f8 | 494 | return pipe; |
bf13e81b JN |
495 | } |
496 | ||
a4a5d2f8 VS |
497 | return INVALID_PIPE; |
498 | } | |
499 | ||
500 | static void | |
501 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
502 | { | |
503 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
504 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
505 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
506 | enum port port = intel_dig_port->port; |
507 | ||
508 | lockdep_assert_held(&dev_priv->pps_mutex); | |
509 | ||
510 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
511 | /* first pick one where the panel is on */ |
512 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
513 | vlv_pipe_has_pp_on); | |
514 | /* didn't find one? pick one where vdd is on */ | |
515 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
516 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
517 | vlv_pipe_has_vdd_on); | |
518 | /* didn't find one? pick one with just the correct port */ | |
519 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
520 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
521 | vlv_pipe_any); | |
a4a5d2f8 VS |
522 | |
523 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
524 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
525 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
526 | port_name(port)); | |
527 | return; | |
bf13e81b JN |
528 | } |
529 | ||
a4a5d2f8 VS |
530 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
531 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
532 | ||
36b5f425 VS |
533 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
534 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
535 | } |
536 | ||
773538e8 VS |
537 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
538 | { | |
539 | struct drm_device *dev = dev_priv->dev; | |
540 | struct intel_encoder *encoder; | |
541 | ||
542 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
543 | return; | |
544 | ||
545 | /* | |
546 | * We can't grab pps_mutex here due to deadlock with power_domain | |
547 | * mutex when power_domain functions are called while holding pps_mutex. | |
548 | * That also means that in order to use pps_pipe the code needs to | |
549 | * hold both a power domain reference and pps_mutex, and the power domain | |
550 | * reference get/put must be done while _not_ holding pps_mutex. | |
551 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
552 | * should use them always. | |
553 | */ | |
554 | ||
555 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
556 | struct intel_dp *intel_dp; | |
557 | ||
558 | if (encoder->type != INTEL_OUTPUT_EDP) | |
559 | continue; | |
560 | ||
561 | intel_dp = enc_to_intel_dp(&encoder->base); | |
562 | intel_dp->pps_pipe = INVALID_PIPE; | |
563 | } | |
bf13e81b JN |
564 | } |
565 | ||
566 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
567 | { | |
568 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
569 | ||
b0a08bec VK |
570 | if (IS_BROXTON(dev)) |
571 | return BXT_PP_CONTROL(0); | |
572 | else if (HAS_PCH_SPLIT(dev)) | |
bf13e81b JN |
573 | return PCH_PP_CONTROL; |
574 | else | |
575 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
576 | } | |
577 | ||
578 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
579 | { | |
580 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
581 | ||
b0a08bec VK |
582 | if (IS_BROXTON(dev)) |
583 | return BXT_PP_STATUS(0); | |
584 | else if (HAS_PCH_SPLIT(dev)) | |
bf13e81b JN |
585 | return PCH_PP_STATUS; |
586 | else | |
587 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
588 | } | |
589 | ||
01527b31 CT |
590 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
591 | This function only applicable when panel PM state is not to be tracked */ | |
592 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
593 | void *unused) | |
594 | { | |
595 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
596 | edp_notifier); | |
597 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
598 | struct drm_i915_private *dev_priv = dev->dev_private; | |
599 | u32 pp_div; | |
600 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
601 | |
602 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
603 | return 0; | |
604 | ||
773538e8 | 605 | pps_lock(intel_dp); |
e39b999a | 606 | |
01527b31 | 607 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
608 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
609 | ||
01527b31 CT |
610 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
611 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
612 | pp_div = I915_READ(pp_div_reg); | |
613 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
614 | ||
615 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
616 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
617 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
618 | msleep(intel_dp->panel_power_cycle_delay); | |
619 | } | |
620 | ||
773538e8 | 621 | pps_unlock(intel_dp); |
e39b999a | 622 | |
01527b31 CT |
623 | return 0; |
624 | } | |
625 | ||
4be73780 | 626 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 627 | { |
30add22d | 628 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
629 | struct drm_i915_private *dev_priv = dev->dev_private; |
630 | ||
e39b999a VS |
631 | lockdep_assert_held(&dev_priv->pps_mutex); |
632 | ||
9a42356b VS |
633 | if (IS_VALLEYVIEW(dev) && |
634 | intel_dp->pps_pipe == INVALID_PIPE) | |
635 | return false; | |
636 | ||
bf13e81b | 637 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
638 | } |
639 | ||
4be73780 | 640 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 641 | { |
30add22d | 642 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
643 | struct drm_i915_private *dev_priv = dev->dev_private; |
644 | ||
e39b999a VS |
645 | lockdep_assert_held(&dev_priv->pps_mutex); |
646 | ||
9a42356b VS |
647 | if (IS_VALLEYVIEW(dev) && |
648 | intel_dp->pps_pipe == INVALID_PIPE) | |
649 | return false; | |
650 | ||
773538e8 | 651 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
652 | } |
653 | ||
9b984dae KP |
654 | static void |
655 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
656 | { | |
30add22d | 657 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 658 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 659 | |
9b984dae KP |
660 | if (!is_edp(intel_dp)) |
661 | return; | |
453c5420 | 662 | |
4be73780 | 663 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
664 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
665 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
666 | I915_READ(_pp_stat_reg(intel_dp)), |
667 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
668 | } |
669 | } | |
670 | ||
9ee32fea DV |
671 | static uint32_t |
672 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
673 | { | |
674 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
675 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
676 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 677 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
678 | uint32_t status; |
679 | bool done; | |
680 | ||
ef04f00d | 681 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 682 | if (has_aux_irq) |
b18ac466 | 683 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 684 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
685 | else |
686 | done = wait_for_atomic(C, 10) == 0; | |
687 | if (!done) | |
688 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
689 | has_aux_irq); | |
690 | #undef C | |
691 | ||
692 | return status; | |
693 | } | |
694 | ||
ec5b01dd | 695 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 696 | { |
174edf1f PZ |
697 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
698 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 699 | |
ec5b01dd DL |
700 | /* |
701 | * The clock divider is based off the hrawclk, and would like to run at | |
702 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 703 | */ |
ec5b01dd DL |
704 | return index ? 0 : intel_hrawclk(dev) / 2; |
705 | } | |
706 | ||
707 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
708 | { | |
709 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
710 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
469d4b2a | 711 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd DL |
712 | |
713 | if (index) | |
714 | return 0; | |
715 | ||
716 | if (intel_dig_port->port == PORT_A) { | |
05024da3 VS |
717 | return DIV_ROUND_UP(dev_priv->cdclk_freq, 2000); |
718 | ||
ec5b01dd DL |
719 | } else { |
720 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
721 | } | |
722 | } | |
723 | ||
724 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
725 | { | |
726 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
727 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
728 | struct drm_i915_private *dev_priv = dev->dev_private; | |
729 | ||
730 | if (intel_dig_port->port == PORT_A) { | |
731 | if (index) | |
732 | return 0; | |
05024da3 | 733 | return DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 2000); |
2c55c336 JN |
734 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
735 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
736 | switch (index) { |
737 | case 0: return 63; | |
738 | case 1: return 72; | |
739 | default: return 0; | |
740 | } | |
ec5b01dd | 741 | } else { |
bc86625a | 742 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 743 | } |
b84a1cf8 RV |
744 | } |
745 | ||
ec5b01dd DL |
746 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
747 | { | |
748 | return index ? 0 : 100; | |
749 | } | |
750 | ||
b6b5e383 DL |
751 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
752 | { | |
753 | /* | |
754 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
755 | * derive the clock from CDCLK automatically). We still implement the | |
756 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
757 | */ | |
758 | return index ? 0 : 1; | |
759 | } | |
760 | ||
5ed12a19 DL |
761 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
762 | bool has_aux_irq, | |
763 | int send_bytes, | |
764 | uint32_t aux_clock_divider) | |
765 | { | |
766 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
767 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
768 | uint32_t precharge, timeout; | |
769 | ||
770 | if (IS_GEN6(dev)) | |
771 | precharge = 3; | |
772 | else | |
773 | precharge = 5; | |
774 | ||
775 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
776 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
777 | else | |
778 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
779 | ||
780 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 781 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 782 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 783 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 784 | timeout | |
788d4433 | 785 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
786 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
787 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 788 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
789 | } |
790 | ||
b9ca5fad DL |
791 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
792 | bool has_aux_irq, | |
793 | int send_bytes, | |
794 | uint32_t unused) | |
795 | { | |
796 | return DP_AUX_CH_CTL_SEND_BUSY | | |
797 | DP_AUX_CH_CTL_DONE | | |
798 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
799 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
800 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
801 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
802 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
803 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
804 | } | |
805 | ||
b84a1cf8 RV |
806 | static int |
807 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 808 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
809 | uint8_t *recv, int recv_size) |
810 | { | |
811 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
812 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
813 | struct drm_i915_private *dev_priv = dev->dev_private; | |
814 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
815 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 816 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
817 | int i, ret, recv_bytes; |
818 | uint32_t status; | |
5ed12a19 | 819 | int try, clock = 0; |
4e6b788c | 820 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
821 | bool vdd; |
822 | ||
773538e8 | 823 | pps_lock(intel_dp); |
e39b999a | 824 | |
72c3500a VS |
825 | /* |
826 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
827 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
828 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
829 | * ourselves. | |
830 | */ | |
1e0560e0 | 831 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
832 | |
833 | /* dp aux is extremely sensitive to irq latency, hence request the | |
834 | * lowest possible wakeup latency and so prevent the cpu from going into | |
835 | * deep sleep states. | |
836 | */ | |
837 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
838 | ||
839 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 840 | |
c67a470b PZ |
841 | intel_aux_display_runtime_get(dev_priv); |
842 | ||
11bee43e JB |
843 | /* Try to wait for any previous AUX channel activity */ |
844 | for (try = 0; try < 3; try++) { | |
ef04f00d | 845 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
846 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
847 | break; | |
848 | msleep(1); | |
849 | } | |
850 | ||
851 | if (try == 3) { | |
02196c77 MK |
852 | static u32 last_status = -1; |
853 | const u32 status = I915_READ(ch_ctl); | |
854 | ||
855 | if (status != last_status) { | |
856 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
857 | status); | |
858 | last_status = status; | |
859 | } | |
860 | ||
9ee32fea DV |
861 | ret = -EBUSY; |
862 | goto out; | |
4f7f7b7e CW |
863 | } |
864 | ||
46a5ae9f PZ |
865 | /* Only 5 data registers! */ |
866 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
867 | ret = -E2BIG; | |
868 | goto out; | |
869 | } | |
870 | ||
ec5b01dd | 871 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
872 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
873 | has_aux_irq, | |
874 | send_bytes, | |
875 | aux_clock_divider); | |
5ed12a19 | 876 | |
bc86625a CW |
877 | /* Must try at least 3 times according to DP spec */ |
878 | for (try = 0; try < 5; try++) { | |
879 | /* Load the send data into the aux channel data registers */ | |
880 | for (i = 0; i < send_bytes; i += 4) | |
881 | I915_WRITE(ch_data + i, | |
a4f1289e RV |
882 | intel_dp_pack_aux(send + i, |
883 | send_bytes - i)); | |
bc86625a CW |
884 | |
885 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 886 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
887 | |
888 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
889 | ||
890 | /* Clear done status and any errors */ | |
891 | I915_WRITE(ch_ctl, | |
892 | status | | |
893 | DP_AUX_CH_CTL_DONE | | |
894 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
895 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
896 | ||
74ebf294 | 897 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) |
bc86625a | 898 | continue; |
74ebf294 TP |
899 | |
900 | /* DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2 | |
901 | * 400us delay required for errors and timeouts | |
902 | * Timeout errors from the HW already meet this | |
903 | * requirement so skip to next iteration | |
904 | */ | |
905 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { | |
906 | usleep_range(400, 500); | |
bc86625a | 907 | continue; |
74ebf294 | 908 | } |
bc86625a | 909 | if (status & DP_AUX_CH_CTL_DONE) |
e058c945 | 910 | goto done; |
bc86625a | 911 | } |
a4fc5ed6 KP |
912 | } |
913 | ||
a4fc5ed6 | 914 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 915 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
916 | ret = -EBUSY; |
917 | goto out; | |
a4fc5ed6 KP |
918 | } |
919 | ||
e058c945 | 920 | done: |
a4fc5ed6 KP |
921 | /* Check for timeout or receive error. |
922 | * Timeouts occur when the sink is not connected | |
923 | */ | |
a5b3da54 | 924 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 925 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
926 | ret = -EIO; |
927 | goto out; | |
a5b3da54 | 928 | } |
1ae8c0a5 KP |
929 | |
930 | /* Timeouts occur when the device isn't connected, so they're | |
931 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 932 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 933 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
934 | ret = -ETIMEDOUT; |
935 | goto out; | |
a4fc5ed6 KP |
936 | } |
937 | ||
938 | /* Unload any bytes sent back from the other side */ | |
939 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
940 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
941 | if (recv_bytes > recv_size) |
942 | recv_bytes = recv_size; | |
0206e353 | 943 | |
4f7f7b7e | 944 | for (i = 0; i < recv_bytes; i += 4) |
a4f1289e RV |
945 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
946 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 947 | |
9ee32fea DV |
948 | ret = recv_bytes; |
949 | out: | |
950 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 951 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 952 | |
884f19e9 JN |
953 | if (vdd) |
954 | edp_panel_vdd_off(intel_dp, false); | |
955 | ||
773538e8 | 956 | pps_unlock(intel_dp); |
e39b999a | 957 | |
9ee32fea | 958 | return ret; |
a4fc5ed6 KP |
959 | } |
960 | ||
a6c8aff0 JN |
961 | #define BARE_ADDRESS_SIZE 3 |
962 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
963 | static ssize_t |
964 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 965 | { |
9d1a1031 JN |
966 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
967 | uint8_t txbuf[20], rxbuf[20]; | |
968 | size_t txsize, rxsize; | |
a4fc5ed6 | 969 | int ret; |
a4fc5ed6 | 970 | |
d2d9cbbd VS |
971 | txbuf[0] = (msg->request << 4) | |
972 | ((msg->address >> 16) & 0xf); | |
973 | txbuf[1] = (msg->address >> 8) & 0xff; | |
9d1a1031 JN |
974 | txbuf[2] = msg->address & 0xff; |
975 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 976 | |
9d1a1031 JN |
977 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
978 | case DP_AUX_NATIVE_WRITE: | |
979 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 980 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
a1ddefd8 | 981 | rxsize = 2; /* 0 or 1 data bytes */ |
f51a44b9 | 982 | |
9d1a1031 JN |
983 | if (WARN_ON(txsize > 20)) |
984 | return -E2BIG; | |
a4fc5ed6 | 985 | |
9d1a1031 | 986 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 987 | |
9d1a1031 JN |
988 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
989 | if (ret > 0) { | |
990 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 991 | |
a1ddefd8 JN |
992 | if (ret > 1) { |
993 | /* Number of bytes written in a short write. */ | |
994 | ret = clamp_t(int, rxbuf[1], 0, msg->size); | |
995 | } else { | |
996 | /* Return payload size. */ | |
997 | ret = msg->size; | |
998 | } | |
9d1a1031 JN |
999 | } |
1000 | break; | |
46a5ae9f | 1001 | |
9d1a1031 JN |
1002 | case DP_AUX_NATIVE_READ: |
1003 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 1004 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 1005 | rxsize = msg->size + 1; |
a4fc5ed6 | 1006 | |
9d1a1031 JN |
1007 | if (WARN_ON(rxsize > 20)) |
1008 | return -E2BIG; | |
a4fc5ed6 | 1009 | |
9d1a1031 JN |
1010 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
1011 | if (ret > 0) { | |
1012 | msg->reply = rxbuf[0] >> 4; | |
1013 | /* | |
1014 | * Assume happy day, and copy the data. The caller is | |
1015 | * expected to check msg->reply before touching it. | |
1016 | * | |
1017 | * Return payload size. | |
1018 | */ | |
1019 | ret--; | |
1020 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 1021 | } |
9d1a1031 JN |
1022 | break; |
1023 | ||
1024 | default: | |
1025 | ret = -EINVAL; | |
1026 | break; | |
a4fc5ed6 | 1027 | } |
f51a44b9 | 1028 | |
9d1a1031 | 1029 | return ret; |
a4fc5ed6 KP |
1030 | } |
1031 | ||
9d1a1031 JN |
1032 | static void |
1033 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
1034 | { | |
1035 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
500ea70d | 1036 | struct drm_i915_private *dev_priv = dev->dev_private; |
33ad6626 JN |
1037 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1038 | enum port port = intel_dig_port->port; | |
500ea70d | 1039 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
0b99836f | 1040 | const char *name = NULL; |
500ea70d | 1041 | uint32_t porte_aux_ctl_reg = DPA_AUX_CH_CTL; |
ab2c0672 DA |
1042 | int ret; |
1043 | ||
500ea70d RV |
1044 | /* On SKL we don't have Aux for port E so we rely on VBT to set |
1045 | * a proper alternate aux channel. | |
1046 | */ | |
1047 | if (IS_SKYLAKE(dev) && port == PORT_E) { | |
1048 | switch (info->alternate_aux_channel) { | |
1049 | case DP_AUX_B: | |
1050 | porte_aux_ctl_reg = DPB_AUX_CH_CTL; | |
1051 | break; | |
1052 | case DP_AUX_C: | |
1053 | porte_aux_ctl_reg = DPC_AUX_CH_CTL; | |
1054 | break; | |
1055 | case DP_AUX_D: | |
1056 | porte_aux_ctl_reg = DPD_AUX_CH_CTL; | |
1057 | break; | |
1058 | case DP_AUX_A: | |
1059 | default: | |
1060 | porte_aux_ctl_reg = DPA_AUX_CH_CTL; | |
1061 | } | |
1062 | } | |
1063 | ||
33ad6626 JN |
1064 | switch (port) { |
1065 | case PORT_A: | |
1066 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 1067 | name = "DPDDC-A"; |
ab2c0672 | 1068 | break; |
33ad6626 JN |
1069 | case PORT_B: |
1070 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 1071 | name = "DPDDC-B"; |
ab2c0672 | 1072 | break; |
33ad6626 JN |
1073 | case PORT_C: |
1074 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 1075 | name = "DPDDC-C"; |
ab2c0672 | 1076 | break; |
33ad6626 JN |
1077 | case PORT_D: |
1078 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 1079 | name = "DPDDC-D"; |
33ad6626 | 1080 | break; |
500ea70d RV |
1081 | case PORT_E: |
1082 | intel_dp->aux_ch_ctl_reg = porte_aux_ctl_reg; | |
1083 | name = "DPDDC-E"; | |
1084 | break; | |
33ad6626 JN |
1085 | default: |
1086 | BUG(); | |
ab2c0672 DA |
1087 | } |
1088 | ||
1b1aad75 DL |
1089 | /* |
1090 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
1091 | * | |
1092 | * On Haswell and Broadwell though: | |
1093 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
1094 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
1095 | * | |
1096 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
1097 | */ | |
500ea70d | 1098 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev) && port != PORT_E) |
33ad6626 | 1099 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 1100 | |
0b99836f | 1101 | intel_dp->aux.name = name; |
9d1a1031 JN |
1102 | intel_dp->aux.dev = dev->dev; |
1103 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 1104 | |
0b99836f JN |
1105 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1106 | connector->base.kdev->kobj.name); | |
8316f337 | 1107 | |
4f71d0cb | 1108 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 1109 | if (ret < 0) { |
4f71d0cb | 1110 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
1111 | name, ret); |
1112 | return; | |
ab2c0672 | 1113 | } |
8a5e6aeb | 1114 | |
0b99836f JN |
1115 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
1116 | &intel_dp->aux.ddc.dev.kobj, | |
1117 | intel_dp->aux.ddc.dev.kobj.name); | |
1118 | if (ret < 0) { | |
1119 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 1120 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 1121 | } |
a4fc5ed6 KP |
1122 | } |
1123 | ||
80f65de3 ID |
1124 | static void |
1125 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
1126 | { | |
1127 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
1128 | ||
0e32b39c DA |
1129 | if (!intel_connector->mst_port) |
1130 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
1131 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
1132 | intel_connector_unregister(intel_connector); |
1133 | } | |
1134 | ||
5416d871 | 1135 | static void |
840b32b7 | 1136 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config) |
5416d871 DL |
1137 | { |
1138 | u32 ctrl1; | |
1139 | ||
dd3cd74a ACO |
1140 | memset(&pipe_config->dpll_hw_state, 0, |
1141 | sizeof(pipe_config->dpll_hw_state)); | |
1142 | ||
5416d871 DL |
1143 | pipe_config->ddi_pll_sel = SKL_DPLL0; |
1144 | pipe_config->dpll_hw_state.cfgcr1 = 0; | |
1145 | pipe_config->dpll_hw_state.cfgcr2 = 0; | |
1146 | ||
1147 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
840b32b7 | 1148 | switch (pipe_config->port_clock / 2) { |
c3346ef6 | 1149 | case 81000: |
71cd8423 | 1150 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, |
5416d871 DL |
1151 | SKL_DPLL0); |
1152 | break; | |
c3346ef6 | 1153 | case 135000: |
71cd8423 | 1154 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, |
5416d871 DL |
1155 | SKL_DPLL0); |
1156 | break; | |
c3346ef6 | 1157 | case 270000: |
71cd8423 | 1158 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, |
5416d871 DL |
1159 | SKL_DPLL0); |
1160 | break; | |
c3346ef6 | 1161 | case 162000: |
71cd8423 | 1162 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, |
c3346ef6 SJ |
1163 | SKL_DPLL0); |
1164 | break; | |
1165 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which | |
1166 | results in CDCLK change. Need to handle the change of CDCLK by | |
1167 | disabling pipes and re-enabling them */ | |
1168 | case 108000: | |
71cd8423 | 1169 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, |
c3346ef6 SJ |
1170 | SKL_DPLL0); |
1171 | break; | |
1172 | case 216000: | |
71cd8423 | 1173 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, |
c3346ef6 SJ |
1174 | SKL_DPLL0); |
1175 | break; | |
1176 | ||
5416d871 DL |
1177 | } |
1178 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; | |
1179 | } | |
1180 | ||
0e50338c | 1181 | static void |
840b32b7 | 1182 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config) |
0e50338c | 1183 | { |
ee46f3c7 ACO |
1184 | memset(&pipe_config->dpll_hw_state, 0, |
1185 | sizeof(pipe_config->dpll_hw_state)); | |
1186 | ||
840b32b7 VS |
1187 | switch (pipe_config->port_clock / 2) { |
1188 | case 81000: | |
0e50338c DV |
1189 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; |
1190 | break; | |
840b32b7 | 1191 | case 135000: |
0e50338c DV |
1192 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; |
1193 | break; | |
840b32b7 | 1194 | case 270000: |
0e50338c DV |
1195 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; |
1196 | break; | |
1197 | } | |
1198 | } | |
1199 | ||
fc0f8e25 | 1200 | static int |
12f6a2e2 | 1201 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
fc0f8e25 | 1202 | { |
94ca719e VS |
1203 | if (intel_dp->num_sink_rates) { |
1204 | *sink_rates = intel_dp->sink_rates; | |
1205 | return intel_dp->num_sink_rates; | |
fc0f8e25 | 1206 | } |
12f6a2e2 VS |
1207 | |
1208 | *sink_rates = default_rates; | |
1209 | ||
1210 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
fc0f8e25 SJ |
1211 | } |
1212 | ||
a8f3ef61 | 1213 | static int |
1db10e28 | 1214 | intel_dp_source_rates(struct drm_device *dev, const int **source_rates) |
a8f3ef61 | 1215 | { |
64987fc5 SJ |
1216 | if (IS_BROXTON(dev)) { |
1217 | *source_rates = bxt_rates; | |
1218 | return ARRAY_SIZE(bxt_rates); | |
1219 | } else if (IS_SKYLAKE(dev)) { | |
637a9c63 SJ |
1220 | *source_rates = skl_rates; |
1221 | return ARRAY_SIZE(skl_rates); | |
fe51bfb9 VS |
1222 | } else if (IS_CHERRYVIEW(dev)) { |
1223 | *source_rates = chv_rates; | |
1224 | return ARRAY_SIZE(chv_rates); | |
a8f3ef61 | 1225 | } |
636280ba VS |
1226 | |
1227 | *source_rates = default_rates; | |
1228 | ||
1db10e28 VS |
1229 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) |
1230 | /* WaDisableHBR2:skl */ | |
1231 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
1232 | else if (INTEL_INFO(dev)->gen >= 8 || | |
1233 | (IS_HASWELL(dev) && !IS_HSW_ULX(dev))) | |
1234 | return (DP_LINK_BW_5_4 >> 3) + 1; | |
1235 | else | |
1236 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
a8f3ef61 SJ |
1237 | } |
1238 | ||
c6bb3538 DV |
1239 | static void |
1240 | intel_dp_set_clock(struct intel_encoder *encoder, | |
840b32b7 | 1241 | struct intel_crtc_state *pipe_config) |
c6bb3538 DV |
1242 | { |
1243 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1244 | const struct dp_link_dpll *divisor = NULL; |
1245 | int i, count = 0; | |
c6bb3538 DV |
1246 | |
1247 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1248 | divisor = gen4_dpll; |
1249 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1250 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1251 | divisor = pch_dpll; |
1252 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1253 | } else if (IS_CHERRYVIEW(dev)) { |
1254 | divisor = chv_dpll; | |
1255 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1256 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1257 | divisor = vlv_dpll; |
1258 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1259 | } |
9dd4ffdf CML |
1260 | |
1261 | if (divisor && count) { | |
1262 | for (i = 0; i < count; i++) { | |
840b32b7 | 1263 | if (pipe_config->port_clock == divisor[i].clock) { |
9dd4ffdf CML |
1264 | pipe_config->dpll = divisor[i].dpll; |
1265 | pipe_config->clock_set = true; | |
1266 | break; | |
1267 | } | |
1268 | } | |
c6bb3538 DV |
1269 | } |
1270 | } | |
1271 | ||
2ecae76a VS |
1272 | static int intersect_rates(const int *source_rates, int source_len, |
1273 | const int *sink_rates, int sink_len, | |
94ca719e | 1274 | int *common_rates) |
a8f3ef61 SJ |
1275 | { |
1276 | int i = 0, j = 0, k = 0; | |
1277 | ||
a8f3ef61 SJ |
1278 | while (i < source_len && j < sink_len) { |
1279 | if (source_rates[i] == sink_rates[j]) { | |
e6bda3e4 VS |
1280 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) |
1281 | return k; | |
94ca719e | 1282 | common_rates[k] = source_rates[i]; |
a8f3ef61 SJ |
1283 | ++k; |
1284 | ++i; | |
1285 | ++j; | |
1286 | } else if (source_rates[i] < sink_rates[j]) { | |
1287 | ++i; | |
1288 | } else { | |
1289 | ++j; | |
1290 | } | |
1291 | } | |
1292 | return k; | |
1293 | } | |
1294 | ||
94ca719e VS |
1295 | static int intel_dp_common_rates(struct intel_dp *intel_dp, |
1296 | int *common_rates) | |
2ecae76a VS |
1297 | { |
1298 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1299 | const int *source_rates, *sink_rates; | |
1300 | int source_len, sink_len; | |
1301 | ||
1302 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1303 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1304 | ||
1305 | return intersect_rates(source_rates, source_len, | |
1306 | sink_rates, sink_len, | |
94ca719e | 1307 | common_rates); |
2ecae76a VS |
1308 | } |
1309 | ||
0336400e VS |
1310 | static void snprintf_int_array(char *str, size_t len, |
1311 | const int *array, int nelem) | |
1312 | { | |
1313 | int i; | |
1314 | ||
1315 | str[0] = '\0'; | |
1316 | ||
1317 | for (i = 0; i < nelem; i++) { | |
b2f505be | 1318 | int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]); |
0336400e VS |
1319 | if (r >= len) |
1320 | return; | |
1321 | str += r; | |
1322 | len -= r; | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | static void intel_dp_print_rates(struct intel_dp *intel_dp) | |
1327 | { | |
1328 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1329 | const int *source_rates, *sink_rates; | |
94ca719e VS |
1330 | int source_len, sink_len, common_len; |
1331 | int common_rates[DP_MAX_SUPPORTED_RATES]; | |
0336400e VS |
1332 | char str[128]; /* FIXME: too big for stack? */ |
1333 | ||
1334 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1335 | return; | |
1336 | ||
1337 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1338 | snprintf_int_array(str, sizeof(str), source_rates, source_len); | |
1339 | DRM_DEBUG_KMS("source rates: %s\n", str); | |
1340 | ||
1341 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1342 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); | |
1343 | DRM_DEBUG_KMS("sink rates: %s\n", str); | |
1344 | ||
94ca719e VS |
1345 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1346 | snprintf_int_array(str, sizeof(str), common_rates, common_len); | |
1347 | DRM_DEBUG_KMS("common rates: %s\n", str); | |
0336400e VS |
1348 | } |
1349 | ||
f4896f15 | 1350 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1351 | { |
1352 | int i = 0; | |
1353 | ||
1354 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1355 | if (find == rates[i]) | |
1356 | break; | |
1357 | ||
1358 | return i; | |
1359 | } | |
1360 | ||
50fec21a VS |
1361 | int |
1362 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1363 | { | |
1364 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1365 | int len; | |
1366 | ||
94ca719e | 1367 | len = intel_dp_common_rates(intel_dp, rates); |
50fec21a VS |
1368 | if (WARN_ON(len <= 0)) |
1369 | return 162000; | |
1370 | ||
1371 | return rates[rate_to_index(0, rates) - 1]; | |
1372 | } | |
1373 | ||
ed4e9c1d VS |
1374 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1375 | { | |
94ca719e | 1376 | return rate_to_index(rate, intel_dp->sink_rates); |
ed4e9c1d VS |
1377 | } |
1378 | ||
04a60f9f VS |
1379 | static void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, |
1380 | uint8_t *link_bw, uint8_t *rate_select) | |
1381 | { | |
1382 | if (intel_dp->num_sink_rates) { | |
1383 | *link_bw = 0; | |
1384 | *rate_select = | |
1385 | intel_dp_rate_select(intel_dp, port_clock); | |
1386 | } else { | |
1387 | *link_bw = drm_dp_link_rate_to_bw_code(port_clock); | |
1388 | *rate_select = 0; | |
1389 | } | |
1390 | } | |
1391 | ||
00c09d70 | 1392 | bool |
5bfe2ac0 | 1393 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1394 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1395 | { |
5bfe2ac0 | 1396 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1397 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1398 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1399 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1400 | enum port port = dp_to_dig_port(intel_dp)->port; |
84556d58 | 1401 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
dd06f90e | 1402 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1403 | int lane_count, clock; |
56071a20 | 1404 | int min_lane_count = 1; |
eeb6324d | 1405 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1406 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1407 | int min_clock = 0; |
a8f3ef61 | 1408 | int max_clock; |
083f9560 | 1409 | int bpp, mode_rate; |
ff9a6750 | 1410 | int link_avail, link_clock; |
94ca719e VS |
1411 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1412 | int common_len; | |
04a60f9f | 1413 | uint8_t link_bw, rate_select; |
a8f3ef61 | 1414 | |
94ca719e | 1415 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
a8f3ef61 SJ |
1416 | |
1417 | /* No common link rates between source and sink */ | |
94ca719e | 1418 | WARN_ON(common_len <= 0); |
a8f3ef61 | 1419 | |
94ca719e | 1420 | max_clock = common_len - 1; |
a4fc5ed6 | 1421 | |
bc7d38a4 | 1422 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1423 | pipe_config->has_pch_encoder = true; |
1424 | ||
03afc4a2 | 1425 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1426 | pipe_config->has_drrs = false; |
9fcb1704 | 1427 | pipe_config->has_audio = intel_dp->has_audio && port != PORT_A; |
a4fc5ed6 | 1428 | |
dd06f90e JN |
1429 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1430 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1431 | adjusted_mode); | |
a1b2278e CK |
1432 | |
1433 | if (INTEL_INFO(dev)->gen >= 9) { | |
1434 | int ret; | |
e435d6e5 | 1435 | ret = skl_update_scaler_crtc(pipe_config); |
a1b2278e CK |
1436 | if (ret) |
1437 | return ret; | |
1438 | } | |
1439 | ||
2dd24552 JB |
1440 | if (!HAS_PCH_SPLIT(dev)) |
1441 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1442 | intel_connector->panel.fitting_mode); | |
1443 | else | |
b074cec8 JB |
1444 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1445 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1446 | } |
1447 | ||
cb1793ce | 1448 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1449 | return false; |
1450 | ||
083f9560 | 1451 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 | 1452 | "max bw %d pixel clock %iKHz\n", |
94ca719e | 1453 | max_lane_count, common_rates[max_clock], |
241bfc38 | 1454 | adjusted_mode->crtc_clock); |
083f9560 | 1455 | |
36008365 DV |
1456 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1457 | * bpc in between. */ | |
3e7ca985 | 1458 | bpp = pipe_config->pipe_bpp; |
56071a20 | 1459 | if (is_edp(intel_dp)) { |
22ce5628 TS |
1460 | |
1461 | /* Get bpp from vbt only for panels that dont have bpp in edid */ | |
1462 | if (intel_connector->base.display_info.bpc == 0 && | |
1463 | (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp)) { | |
56071a20 JN |
1464 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", |
1465 | dev_priv->vbt.edp_bpp); | |
1466 | bpp = dev_priv->vbt.edp_bpp; | |
1467 | } | |
1468 | ||
344c5bbc JN |
1469 | /* |
1470 | * Use the maximum clock and number of lanes the eDP panel | |
1471 | * advertizes being capable of. The panels are generally | |
1472 | * designed to support only a single clock and lane | |
1473 | * configuration, and typically these values correspond to the | |
1474 | * native resolution of the panel. | |
1475 | */ | |
1476 | min_lane_count = max_lane_count; | |
1477 | min_clock = max_clock; | |
7984211e | 1478 | } |
657445fe | 1479 | |
36008365 | 1480 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1481 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1482 | bpp); | |
36008365 | 1483 | |
c6930992 | 1484 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1485 | for (lane_count = min_lane_count; |
1486 | lane_count <= max_lane_count; | |
1487 | lane_count <<= 1) { | |
1488 | ||
94ca719e | 1489 | link_clock = common_rates[clock]; |
36008365 DV |
1490 | link_avail = intel_dp_max_data_rate(link_clock, |
1491 | lane_count); | |
1492 | ||
1493 | if (mode_rate <= link_avail) { | |
1494 | goto found; | |
1495 | } | |
1496 | } | |
1497 | } | |
1498 | } | |
c4867936 | 1499 | |
36008365 | 1500 | return false; |
3685a8f3 | 1501 | |
36008365 | 1502 | found: |
55bc60db VS |
1503 | if (intel_dp->color_range_auto) { |
1504 | /* | |
1505 | * See: | |
1506 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1507 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1508 | */ | |
0f2a2a75 VS |
1509 | pipe_config->limited_color_range = |
1510 | bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1; | |
1511 | } else { | |
1512 | pipe_config->limited_color_range = | |
1513 | intel_dp->limited_color_range; | |
55bc60db VS |
1514 | } |
1515 | ||
90a6b7b0 | 1516 | pipe_config->lane_count = lane_count; |
a8f3ef61 | 1517 | |
657445fe | 1518 | pipe_config->pipe_bpp = bpp; |
94ca719e | 1519 | pipe_config->port_clock = common_rates[clock]; |
a4fc5ed6 | 1520 | |
04a60f9f VS |
1521 | intel_dp_compute_rate(intel_dp, pipe_config->port_clock, |
1522 | &link_bw, &rate_select); | |
1523 | ||
1524 | DRM_DEBUG_KMS("DP link bw %02x rate select %02x lane count %d clock %d bpp %d\n", | |
1525 | link_bw, rate_select, pipe_config->lane_count, | |
ff9a6750 | 1526 | pipe_config->port_clock, bpp); |
36008365 DV |
1527 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1528 | mode_rate, link_avail); | |
a4fc5ed6 | 1529 | |
03afc4a2 | 1530 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1531 | adjusted_mode->crtc_clock, |
1532 | pipe_config->port_clock, | |
03afc4a2 | 1533 | &pipe_config->dp_m_n); |
9d1a455b | 1534 | |
439d7ac0 | 1535 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1536 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1537 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1538 | intel_link_compute_m_n(bpp, lane_count, |
1539 | intel_connector->panel.downclock_mode->clock, | |
1540 | pipe_config->port_clock, | |
1541 | &pipe_config->dp_m2_n2); | |
1542 | } | |
1543 | ||
5416d871 | 1544 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
840b32b7 | 1545 | skl_edp_set_pll_config(pipe_config); |
977bb38d S |
1546 | else if (IS_BROXTON(dev)) |
1547 | /* handled in ddi */; | |
5416d871 | 1548 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
840b32b7 | 1549 | hsw_dp_set_ddi_pll_sel(pipe_config); |
0e50338c | 1550 | else |
840b32b7 | 1551 | intel_dp_set_clock(encoder, pipe_config); |
c6bb3538 | 1552 | |
03afc4a2 | 1553 | return true; |
a4fc5ed6 KP |
1554 | } |
1555 | ||
7c62a164 | 1556 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1557 | { |
7c62a164 DV |
1558 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1559 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1560 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1561 | struct drm_i915_private *dev_priv = dev->dev_private; |
1562 | u32 dpa_ctl; | |
1563 | ||
6e3c9717 ACO |
1564 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1565 | crtc->config->port_clock); | |
ea9b6006 DV |
1566 | dpa_ctl = I915_READ(DP_A); |
1567 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1568 | ||
6e3c9717 | 1569 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1570 | /* For a long time we've carried around a ILK-DevA w/a for the |
1571 | * 160MHz clock. If we're really unlucky, it's still required. | |
1572 | */ | |
1573 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1574 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1575 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1576 | } else { |
1577 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1578 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1579 | } |
1ce17038 | 1580 | |
ea9b6006 DV |
1581 | I915_WRITE(DP_A, dpa_ctl); |
1582 | ||
1583 | POSTING_READ(DP_A); | |
1584 | udelay(500); | |
1585 | } | |
1586 | ||
901c2daf VS |
1587 | void intel_dp_set_link_params(struct intel_dp *intel_dp, |
1588 | const struct intel_crtc_state *pipe_config) | |
1589 | { | |
1590 | intel_dp->link_rate = pipe_config->port_clock; | |
1591 | intel_dp->lane_count = pipe_config->lane_count; | |
1592 | } | |
1593 | ||
8ac33ed3 | 1594 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1595 | { |
b934223d | 1596 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1597 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1598 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1599 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1600 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
6e3c9717 | 1601 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1602 | |
901c2daf VS |
1603 | intel_dp_set_link_params(intel_dp, crtc->config); |
1604 | ||
417e822d | 1605 | /* |
1a2eb460 | 1606 | * There are four kinds of DP registers: |
417e822d KP |
1607 | * |
1608 | * IBX PCH | |
1a2eb460 KP |
1609 | * SNB CPU |
1610 | * IVB CPU | |
417e822d KP |
1611 | * CPT PCH |
1612 | * | |
1613 | * IBX PCH and CPU are the same for almost everything, | |
1614 | * except that the CPU DP PLL is configured in this | |
1615 | * register | |
1616 | * | |
1617 | * CPT PCH is quite different, having many bits moved | |
1618 | * to the TRANS_DP_CTL register instead. That | |
1619 | * configuration happens (oddly) in ironlake_pch_enable | |
1620 | */ | |
9c9e7927 | 1621 | |
417e822d KP |
1622 | /* Preserve the BIOS-computed detected bit. This is |
1623 | * supposed to be read-only. | |
1624 | */ | |
1625 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1626 | |
417e822d | 1627 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1628 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
90a6b7b0 | 1629 | intel_dp->DP |= DP_PORT_WIDTH(crtc->config->lane_count); |
a4fc5ed6 | 1630 | |
6e3c9717 | 1631 | if (crtc->config->has_audio) |
ea5b213a | 1632 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1633 | |
417e822d | 1634 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1635 | |
39e5fa88 | 1636 | if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
1637 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1638 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1639 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1640 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1641 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1642 | ||
6aba5b6c | 1643 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1644 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1645 | ||
7c62a164 | 1646 | intel_dp->DP |= crtc->pipe << 29; |
39e5fa88 | 1647 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
e3ef4479 VS |
1648 | u32 trans_dp; |
1649 | ||
39e5fa88 | 1650 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
e3ef4479 VS |
1651 | |
1652 | trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1653 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
1654 | trans_dp |= TRANS_DP_ENH_FRAMING; | |
1655 | else | |
1656 | trans_dp &= ~TRANS_DP_ENH_FRAMING; | |
1657 | I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp); | |
39e5fa88 | 1658 | } else { |
0f2a2a75 VS |
1659 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
1660 | crtc->config->limited_color_range) | |
1661 | intel_dp->DP |= DP_COLOR_RANGE_16_235; | |
417e822d KP |
1662 | |
1663 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1664 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1665 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1666 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1667 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1668 | ||
6aba5b6c | 1669 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1670 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1671 | ||
39e5fa88 | 1672 | if (IS_CHERRYVIEW(dev)) |
44f37d1f | 1673 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); |
39e5fa88 VS |
1674 | else if (crtc->pipe == PIPE_B) |
1675 | intel_dp->DP |= DP_PIPEB_SELECT; | |
32f9d658 | 1676 | } |
a4fc5ed6 KP |
1677 | } |
1678 | ||
ffd6749d PZ |
1679 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1680 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1681 | |
1a5ef5b7 PZ |
1682 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1683 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1684 | |
ffd6749d PZ |
1685 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1686 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1687 | |
4be73780 | 1688 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1689 | u32 mask, |
1690 | u32 value) | |
bd943159 | 1691 | { |
30add22d | 1692 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1693 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1694 | u32 pp_stat_reg, pp_ctrl_reg; |
1695 | ||
e39b999a VS |
1696 | lockdep_assert_held(&dev_priv->pps_mutex); |
1697 | ||
bf13e81b JN |
1698 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1699 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1700 | |
99ea7127 | 1701 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1702 | mask, value, |
1703 | I915_READ(pp_stat_reg), | |
1704 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1705 | |
453c5420 | 1706 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1707 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1708 | I915_READ(pp_stat_reg), |
1709 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1710 | } |
54c136d4 CW |
1711 | |
1712 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1713 | } |
32ce697c | 1714 | |
4be73780 | 1715 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1716 | { |
1717 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1718 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1719 | } |
1720 | ||
4be73780 | 1721 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1722 | { |
1723 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1724 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1725 | } |
1726 | ||
4be73780 | 1727 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1728 | { |
1729 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1730 | |
1731 | /* When we disable the VDD override bit last we have to do the manual | |
1732 | * wait. */ | |
1733 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1734 | intel_dp->panel_power_cycle_delay); | |
1735 | ||
4be73780 | 1736 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1737 | } |
1738 | ||
4be73780 | 1739 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1740 | { |
1741 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1742 | intel_dp->backlight_on_delay); | |
1743 | } | |
1744 | ||
4be73780 | 1745 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1746 | { |
1747 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1748 | intel_dp->backlight_off_delay); | |
1749 | } | |
99ea7127 | 1750 | |
832dd3c1 KP |
1751 | /* Read the current pp_control value, unlocking the register if it |
1752 | * is locked | |
1753 | */ | |
1754 | ||
453c5420 | 1755 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1756 | { |
453c5420 JB |
1757 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1758 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1759 | u32 control; | |
832dd3c1 | 1760 | |
e39b999a VS |
1761 | lockdep_assert_held(&dev_priv->pps_mutex); |
1762 | ||
bf13e81b | 1763 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
b0a08bec VK |
1764 | if (!IS_BROXTON(dev)) { |
1765 | control &= ~PANEL_UNLOCK_MASK; | |
1766 | control |= PANEL_UNLOCK_REGS; | |
1767 | } | |
832dd3c1 | 1768 | return control; |
bd943159 KP |
1769 | } |
1770 | ||
951468f3 VS |
1771 | /* |
1772 | * Must be paired with edp_panel_vdd_off(). | |
1773 | * Must hold pps_mutex around the whole on/off sequence. | |
1774 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1775 | */ | |
1e0560e0 | 1776 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1777 | { |
30add22d | 1778 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1779 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1780 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1781 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1782 | enum intel_display_power_domain power_domain; |
5d613501 | 1783 | u32 pp; |
453c5420 | 1784 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1785 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1786 | |
e39b999a VS |
1787 | lockdep_assert_held(&dev_priv->pps_mutex); |
1788 | ||
97af61f5 | 1789 | if (!is_edp(intel_dp)) |
adddaaf4 | 1790 | return false; |
bd943159 | 1791 | |
2c623c11 | 1792 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1793 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1794 | |
4be73780 | 1795 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1796 | return need_to_disable; |
b0665d57 | 1797 | |
4e6e1a54 ID |
1798 | power_domain = intel_display_port_power_domain(intel_encoder); |
1799 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1800 | |
3936fcf4 VS |
1801 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1802 | port_name(intel_dig_port->port)); | |
bd943159 | 1803 | |
4be73780 DV |
1804 | if (!edp_have_panel_power(intel_dp)) |
1805 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1806 | |
453c5420 | 1807 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1808 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1809 | |
bf13e81b JN |
1810 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1811 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1812 | |
1813 | I915_WRITE(pp_ctrl_reg, pp); | |
1814 | POSTING_READ(pp_ctrl_reg); | |
1815 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1816 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1817 | /* |
1818 | * If the panel wasn't on, delay before accessing aux channel | |
1819 | */ | |
4be73780 | 1820 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1821 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1822 | port_name(intel_dig_port->port)); | |
f01eca2e | 1823 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1824 | } |
adddaaf4 JN |
1825 | |
1826 | return need_to_disable; | |
1827 | } | |
1828 | ||
951468f3 VS |
1829 | /* |
1830 | * Must be paired with intel_edp_panel_vdd_off() or | |
1831 | * intel_edp_panel_off(). | |
1832 | * Nested calls to these functions are not allowed since | |
1833 | * we drop the lock. Caller must use some higher level | |
1834 | * locking to prevent nested calls from other threads. | |
1835 | */ | |
b80d6c78 | 1836 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1837 | { |
c695b6b6 | 1838 | bool vdd; |
adddaaf4 | 1839 | |
c695b6b6 VS |
1840 | if (!is_edp(intel_dp)) |
1841 | return; | |
1842 | ||
773538e8 | 1843 | pps_lock(intel_dp); |
c695b6b6 | 1844 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1845 | pps_unlock(intel_dp); |
c695b6b6 | 1846 | |
e2c719b7 | 1847 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1848 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1849 | } |
1850 | ||
4be73780 | 1851 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1852 | { |
30add22d | 1853 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1854 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1855 | struct intel_digital_port *intel_dig_port = |
1856 | dp_to_dig_port(intel_dp); | |
1857 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1858 | enum intel_display_power_domain power_domain; | |
5d613501 | 1859 | u32 pp; |
453c5420 | 1860 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1861 | |
e39b999a | 1862 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1863 | |
15e899a0 | 1864 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1865 | |
15e899a0 | 1866 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1867 | return; |
b0665d57 | 1868 | |
3936fcf4 VS |
1869 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1870 | port_name(intel_dig_port->port)); | |
bd943159 | 1871 | |
be2c9196 VS |
1872 | pp = ironlake_get_pp_control(intel_dp); |
1873 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1874 | |
be2c9196 VS |
1875 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1876 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1877 | |
be2c9196 VS |
1878 | I915_WRITE(pp_ctrl_reg, pp); |
1879 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1880 | |
be2c9196 VS |
1881 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1882 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1883 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1884 | |
be2c9196 VS |
1885 | if ((pp & POWER_TARGET_ON) == 0) |
1886 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1887 | |
be2c9196 VS |
1888 | power_domain = intel_display_port_power_domain(intel_encoder); |
1889 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1890 | } |
5d613501 | 1891 | |
4be73780 | 1892 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1893 | { |
1894 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1895 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1896 | |
773538e8 | 1897 | pps_lock(intel_dp); |
15e899a0 VS |
1898 | if (!intel_dp->want_panel_vdd) |
1899 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1900 | pps_unlock(intel_dp); |
bd943159 KP |
1901 | } |
1902 | ||
aba86890 ID |
1903 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1904 | { | |
1905 | unsigned long delay; | |
1906 | ||
1907 | /* | |
1908 | * Queue the timer to fire a long time from now (relative to the power | |
1909 | * down delay) to keep the panel power up across a sequence of | |
1910 | * operations. | |
1911 | */ | |
1912 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1913 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1914 | } | |
1915 | ||
951468f3 VS |
1916 | /* |
1917 | * Must be paired with edp_panel_vdd_on(). | |
1918 | * Must hold pps_mutex around the whole on/off sequence. | |
1919 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1920 | */ | |
4be73780 | 1921 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1922 | { |
e39b999a VS |
1923 | struct drm_i915_private *dev_priv = |
1924 | intel_dp_to_dev(intel_dp)->dev_private; | |
1925 | ||
1926 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1927 | ||
97af61f5 KP |
1928 | if (!is_edp(intel_dp)) |
1929 | return; | |
5d613501 | 1930 | |
e2c719b7 | 1931 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1932 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1933 | |
bd943159 KP |
1934 | intel_dp->want_panel_vdd = false; |
1935 | ||
aba86890 | 1936 | if (sync) |
4be73780 | 1937 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1938 | else |
1939 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1940 | } |
1941 | ||
9f0fb5be | 1942 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1943 | { |
30add22d | 1944 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1945 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1946 | u32 pp; |
453c5420 | 1947 | u32 pp_ctrl_reg; |
9934c132 | 1948 | |
9f0fb5be VS |
1949 | lockdep_assert_held(&dev_priv->pps_mutex); |
1950 | ||
97af61f5 | 1951 | if (!is_edp(intel_dp)) |
bd943159 | 1952 | return; |
99ea7127 | 1953 | |
3936fcf4 VS |
1954 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1955 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1956 | |
e7a89ace VS |
1957 | if (WARN(edp_have_panel_power(intel_dp), |
1958 | "eDP port %c panel power already on\n", | |
1959 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1960 | return; |
9934c132 | 1961 | |
4be73780 | 1962 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1963 | |
bf13e81b | 1964 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1965 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1966 | if (IS_GEN5(dev)) { |
1967 | /* ILK workaround: disable reset around power sequence */ | |
1968 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1969 | I915_WRITE(pp_ctrl_reg, pp); |
1970 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1971 | } |
37c6c9b0 | 1972 | |
1c0ae80a | 1973 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1974 | if (!IS_GEN5(dev)) |
1975 | pp |= PANEL_POWER_RESET; | |
1976 | ||
453c5420 JB |
1977 | I915_WRITE(pp_ctrl_reg, pp); |
1978 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1979 | |
4be73780 | 1980 | wait_panel_on(intel_dp); |
dce56b3c | 1981 | intel_dp->last_power_on = jiffies; |
9934c132 | 1982 | |
05ce1a49 KP |
1983 | if (IS_GEN5(dev)) { |
1984 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1985 | I915_WRITE(pp_ctrl_reg, pp); |
1986 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1987 | } |
9f0fb5be | 1988 | } |
e39b999a | 1989 | |
9f0fb5be VS |
1990 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1991 | { | |
1992 | if (!is_edp(intel_dp)) | |
1993 | return; | |
1994 | ||
1995 | pps_lock(intel_dp); | |
1996 | edp_panel_on(intel_dp); | |
773538e8 | 1997 | pps_unlock(intel_dp); |
9934c132 JB |
1998 | } |
1999 | ||
9f0fb5be VS |
2000 | |
2001 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 2002 | { |
4e6e1a54 ID |
2003 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2004 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 2005 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 2006 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 2007 | enum intel_display_power_domain power_domain; |
99ea7127 | 2008 | u32 pp; |
453c5420 | 2009 | u32 pp_ctrl_reg; |
9934c132 | 2010 | |
9f0fb5be VS |
2011 | lockdep_assert_held(&dev_priv->pps_mutex); |
2012 | ||
97af61f5 KP |
2013 | if (!is_edp(intel_dp)) |
2014 | return; | |
37c6c9b0 | 2015 | |
3936fcf4 VS |
2016 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
2017 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 2018 | |
3936fcf4 VS |
2019 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
2020 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 2021 | |
453c5420 | 2022 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
2023 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
2024 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
2025 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
2026 | EDP_BLC_ENABLE); | |
453c5420 | 2027 | |
bf13e81b | 2028 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 2029 | |
849e39f5 PZ |
2030 | intel_dp->want_panel_vdd = false; |
2031 | ||
453c5420 JB |
2032 | I915_WRITE(pp_ctrl_reg, pp); |
2033 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 2034 | |
dce56b3c | 2035 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 2036 | wait_panel_off(intel_dp); |
849e39f5 PZ |
2037 | |
2038 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
2039 | power_domain = intel_display_port_power_domain(intel_encoder); |
2040 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 2041 | } |
e39b999a | 2042 | |
9f0fb5be VS |
2043 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
2044 | { | |
2045 | if (!is_edp(intel_dp)) | |
2046 | return; | |
e39b999a | 2047 | |
9f0fb5be VS |
2048 | pps_lock(intel_dp); |
2049 | edp_panel_off(intel_dp); | |
773538e8 | 2050 | pps_unlock(intel_dp); |
9934c132 JB |
2051 | } |
2052 | ||
1250d107 JN |
2053 | /* Enable backlight in the panel power control. */ |
2054 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 2055 | { |
da63a9f2 PZ |
2056 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2057 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
2058 | struct drm_i915_private *dev_priv = dev->dev_private; |
2059 | u32 pp; | |
453c5420 | 2060 | u32 pp_ctrl_reg; |
32f9d658 | 2061 | |
01cb9ea6 JB |
2062 | /* |
2063 | * If we enable the backlight right away following a panel power | |
2064 | * on, we may see slight flicker as the panel syncs with the eDP | |
2065 | * link. So delay a bit to make sure the image is solid before | |
2066 | * allowing it to appear. | |
2067 | */ | |
4be73780 | 2068 | wait_backlight_on(intel_dp); |
e39b999a | 2069 | |
773538e8 | 2070 | pps_lock(intel_dp); |
e39b999a | 2071 | |
453c5420 | 2072 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2073 | pp |= EDP_BLC_ENABLE; |
453c5420 | 2074 | |
bf13e81b | 2075 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2076 | |
2077 | I915_WRITE(pp_ctrl_reg, pp); | |
2078 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 2079 | |
773538e8 | 2080 | pps_unlock(intel_dp); |
32f9d658 ZW |
2081 | } |
2082 | ||
1250d107 JN |
2083 | /* Enable backlight PWM and backlight PP control. */ |
2084 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
2085 | { | |
2086 | if (!is_edp(intel_dp)) | |
2087 | return; | |
2088 | ||
2089 | DRM_DEBUG_KMS("\n"); | |
2090 | ||
2091 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
2092 | _intel_edp_backlight_on(intel_dp); | |
2093 | } | |
2094 | ||
2095 | /* Disable backlight in the panel power control. */ | |
2096 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 2097 | { |
30add22d | 2098 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
2099 | struct drm_i915_private *dev_priv = dev->dev_private; |
2100 | u32 pp; | |
453c5420 | 2101 | u32 pp_ctrl_reg; |
32f9d658 | 2102 | |
f01eca2e KP |
2103 | if (!is_edp(intel_dp)) |
2104 | return; | |
2105 | ||
773538e8 | 2106 | pps_lock(intel_dp); |
e39b999a | 2107 | |
453c5420 | 2108 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2109 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 2110 | |
bf13e81b | 2111 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2112 | |
2113 | I915_WRITE(pp_ctrl_reg, pp); | |
2114 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 2115 | |
773538e8 | 2116 | pps_unlock(intel_dp); |
e39b999a VS |
2117 | |
2118 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 2119 | edp_wait_backlight_off(intel_dp); |
1250d107 | 2120 | } |
f7d2323c | 2121 | |
1250d107 JN |
2122 | /* Disable backlight PP control and backlight PWM. */ |
2123 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
2124 | { | |
2125 | if (!is_edp(intel_dp)) | |
2126 | return; | |
2127 | ||
2128 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 2129 | |
1250d107 | 2130 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 2131 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 2132 | } |
a4fc5ed6 | 2133 | |
73580fb7 JN |
2134 | /* |
2135 | * Hook for controlling the panel power control backlight through the bl_power | |
2136 | * sysfs attribute. Take care to handle multiple calls. | |
2137 | */ | |
2138 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
2139 | bool enable) | |
2140 | { | |
2141 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
2142 | bool is_enabled; |
2143 | ||
773538e8 | 2144 | pps_lock(intel_dp); |
e39b999a | 2145 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 2146 | pps_unlock(intel_dp); |
73580fb7 JN |
2147 | |
2148 | if (is_enabled == enable) | |
2149 | return; | |
2150 | ||
23ba9373 JN |
2151 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2152 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2153 | |
2154 | if (enable) | |
2155 | _intel_edp_backlight_on(intel_dp); | |
2156 | else | |
2157 | _intel_edp_backlight_off(intel_dp); | |
2158 | } | |
2159 | ||
2bd2ad64 | 2160 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2161 | { |
da63a9f2 PZ |
2162 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2163 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2164 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2165 | struct drm_i915_private *dev_priv = dev->dev_private; |
2166 | u32 dpa_ctl; | |
2167 | ||
2bd2ad64 DV |
2168 | assert_pipe_disabled(dev_priv, |
2169 | to_intel_crtc(crtc)->pipe); | |
2170 | ||
d240f20f JB |
2171 | DRM_DEBUG_KMS("\n"); |
2172 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2173 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2174 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2175 | ||
2176 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2177 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2178 | * enable bits here to ensure that we don't enable too much. */ | |
2179 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2180 | intel_dp->DP |= DP_PLL_ENABLE; | |
2181 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2182 | POSTING_READ(DP_A); |
2183 | udelay(200); | |
d240f20f JB |
2184 | } |
2185 | ||
2bd2ad64 | 2186 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2187 | { |
da63a9f2 PZ |
2188 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2189 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2190 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2191 | struct drm_i915_private *dev_priv = dev->dev_private; |
2192 | u32 dpa_ctl; | |
2193 | ||
2bd2ad64 DV |
2194 | assert_pipe_disabled(dev_priv, |
2195 | to_intel_crtc(crtc)->pipe); | |
2196 | ||
d240f20f | 2197 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2198 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2199 | "dp pll off, should be on\n"); | |
2200 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2201 | ||
2202 | /* We can't rely on the value tracked for the DP register in | |
2203 | * intel_dp->DP because link_down must not change that (otherwise link | |
2204 | * re-training will fail. */ | |
298b0b39 | 2205 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2206 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2207 | POSTING_READ(DP_A); |
d240f20f JB |
2208 | udelay(200); |
2209 | } | |
2210 | ||
c7ad3810 | 2211 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2212 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2213 | { |
2214 | int ret, i; | |
2215 | ||
2216 | /* Should have a valid DPCD by this point */ | |
2217 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2218 | return; | |
2219 | ||
2220 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2221 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2222 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2223 | } else { |
2224 | /* | |
2225 | * When turning on, we need to retry for 1ms to give the sink | |
2226 | * time to wake up. | |
2227 | */ | |
2228 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2229 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2230 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2231 | if (ret == 1) |
2232 | break; | |
2233 | msleep(1); | |
2234 | } | |
2235 | } | |
f9cac721 JN |
2236 | |
2237 | if (ret != 1) | |
2238 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2239 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2240 | } |
2241 | ||
19d8fe15 DV |
2242 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2243 | enum pipe *pipe) | |
d240f20f | 2244 | { |
19d8fe15 | 2245 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2246 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2247 | struct drm_device *dev = encoder->base.dev; |
2248 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2249 | enum intel_display_power_domain power_domain; |
2250 | u32 tmp; | |
2251 | ||
2252 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2253 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2254 | return false; |
2255 | ||
2256 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2257 | |
2258 | if (!(tmp & DP_PORT_EN)) | |
2259 | return false; | |
2260 | ||
39e5fa88 | 2261 | if (IS_GEN7(dev) && port == PORT_A) { |
19d8fe15 | 2262 | *pipe = PORT_TO_PIPE_CPT(tmp); |
39e5fa88 | 2263 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
adc289d7 | 2264 | enum pipe p; |
19d8fe15 | 2265 | |
adc289d7 VS |
2266 | for_each_pipe(dev_priv, p) { |
2267 | u32 trans_dp = I915_READ(TRANS_DP_CTL(p)); | |
2268 | if (TRANS_DP_PIPE_TO_PORT(trans_dp) == port) { | |
2269 | *pipe = p; | |
19d8fe15 DV |
2270 | return true; |
2271 | } | |
2272 | } | |
19d8fe15 | 2273 | |
4a0833ec DV |
2274 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2275 | intel_dp->output_reg); | |
39e5fa88 VS |
2276 | } else if (IS_CHERRYVIEW(dev)) { |
2277 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
2278 | } else { | |
2279 | *pipe = PORT_TO_PIPE(tmp); | |
4a0833ec | 2280 | } |
d240f20f | 2281 | |
19d8fe15 DV |
2282 | return true; |
2283 | } | |
d240f20f | 2284 | |
045ac3b5 | 2285 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2286 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2287 | { |
2288 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2289 | u32 tmp, flags = 0; |
63000ef6 XZ |
2290 | struct drm_device *dev = encoder->base.dev; |
2291 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2292 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2293 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2294 | int dotclock; |
045ac3b5 | 2295 | |
9ed109a7 | 2296 | tmp = I915_READ(intel_dp->output_reg); |
9fcb1704 JN |
2297 | |
2298 | pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A; | |
9ed109a7 | 2299 | |
39e5fa88 | 2300 | if (HAS_PCH_CPT(dev) && port != PORT_A) { |
b81e34c2 VS |
2301 | u32 trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
2302 | ||
2303 | if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
63000ef6 XZ |
2304 | flags |= DRM_MODE_FLAG_PHSYNC; |
2305 | else | |
2306 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2307 | |
b81e34c2 | 2308 | if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
63000ef6 XZ |
2309 | flags |= DRM_MODE_FLAG_PVSYNC; |
2310 | else | |
2311 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2312 | } else { | |
39e5fa88 | 2313 | if (tmp & DP_SYNC_HS_HIGH) |
63000ef6 XZ |
2314 | flags |= DRM_MODE_FLAG_PHSYNC; |
2315 | else | |
2316 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2317 | |
39e5fa88 | 2318 | if (tmp & DP_SYNC_VS_HIGH) |
63000ef6 XZ |
2319 | flags |= DRM_MODE_FLAG_PVSYNC; |
2320 | else | |
2321 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2322 | } | |
045ac3b5 | 2323 | |
2d112de7 | 2324 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2325 | |
8c875fca VS |
2326 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2327 | tmp & DP_COLOR_RANGE_16_235) | |
2328 | pipe_config->limited_color_range = true; | |
2329 | ||
eb14cb74 VS |
2330 | pipe_config->has_dp_encoder = true; |
2331 | ||
90a6b7b0 VS |
2332 | pipe_config->lane_count = |
2333 | ((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1; | |
2334 | ||
eb14cb74 VS |
2335 | intel_dp_get_m_n(crtc, pipe_config); |
2336 | ||
18442d08 | 2337 | if (port == PORT_A) { |
f1f644dc JB |
2338 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2339 | pipe_config->port_clock = 162000; | |
2340 | else | |
2341 | pipe_config->port_clock = 270000; | |
2342 | } | |
18442d08 VS |
2343 | |
2344 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2345 | &pipe_config->dp_m_n); | |
2346 | ||
2347 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2348 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2349 | ||
2d112de7 | 2350 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2351 | |
c6cd2ee2 JN |
2352 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2353 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2354 | /* | |
2355 | * This is a big fat ugly hack. | |
2356 | * | |
2357 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2358 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2359 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2360 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2361 | * max, not what it tells us to use. | |
2362 | * | |
2363 | * Note: This will still be broken if the eDP panel is not lit | |
2364 | * up by the BIOS, and thus we can't get the mode at module | |
2365 | * load. | |
2366 | */ | |
2367 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2368 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2369 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2370 | } | |
045ac3b5 JB |
2371 | } |
2372 | ||
e8cb4558 | 2373 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2374 | { |
e8cb4558 | 2375 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2376 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2377 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2378 | ||
6e3c9717 | 2379 | if (crtc->config->has_audio) |
495a5bb8 | 2380 | intel_audio_codec_disable(encoder); |
6cb49835 | 2381 | |
b32c6f48 RV |
2382 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2383 | intel_psr_disable(intel_dp); | |
2384 | ||
6cb49835 DV |
2385 | /* Make sure the panel is off before trying to change the mode. But also |
2386 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2387 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2388 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2389 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2390 | intel_edp_panel_off(intel_dp); |
3739850b | 2391 | |
08aff3fe VS |
2392 | /* disable the port before the pipe on g4x */ |
2393 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2394 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2395 | } |
2396 | ||
08aff3fe | 2397 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2398 | { |
2bd2ad64 | 2399 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2400 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2401 | |
49277c31 | 2402 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2403 | if (port == PORT_A) |
2404 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2405 | } |
2406 | ||
2407 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2408 | { | |
2409 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2410 | ||
2411 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2412 | } |
2413 | ||
580d3811 VS |
2414 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2415 | { | |
2416 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2417 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2418 | struct drm_device *dev = encoder->base.dev; | |
2419 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2420 | struct intel_crtc *intel_crtc = | |
2421 | to_intel_crtc(encoder->base.crtc); | |
2422 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2423 | enum pipe pipe = intel_crtc->pipe; | |
2424 | u32 val; | |
2425 | ||
2426 | intel_dp_link_down(intel_dp); | |
2427 | ||
a580516d | 2428 | mutex_lock(&dev_priv->sb_lock); |
580d3811 VS |
2429 | |
2430 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2431 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2432 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2433 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2434 | |
97fd4d5c VS |
2435 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2436 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2437 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2438 | ||
2439 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2440 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2441 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2442 | ||
2443 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2444 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2445 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 | 2446 | |
a580516d | 2447 | mutex_unlock(&dev_priv->sb_lock); |
580d3811 VS |
2448 | } |
2449 | ||
7b13b58a VS |
2450 | static void |
2451 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2452 | uint32_t *DP, | |
2453 | uint8_t dp_train_pat) | |
2454 | { | |
2455 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2456 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2457 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2458 | enum port port = intel_dig_port->port; | |
2459 | ||
2460 | if (HAS_DDI(dev)) { | |
2461 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2462 | ||
2463 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2464 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2465 | else | |
2466 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2467 | ||
2468 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2469 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2470 | case DP_TRAINING_PATTERN_DISABLE: | |
2471 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2472 | ||
2473 | break; | |
2474 | case DP_TRAINING_PATTERN_1: | |
2475 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2476 | break; | |
2477 | case DP_TRAINING_PATTERN_2: | |
2478 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2479 | break; | |
2480 | case DP_TRAINING_PATTERN_3: | |
2481 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2482 | break; | |
2483 | } | |
2484 | I915_WRITE(DP_TP_CTL(port), temp); | |
2485 | ||
39e5fa88 VS |
2486 | } else if ((IS_GEN7(dev) && port == PORT_A) || |
2487 | (HAS_PCH_CPT(dev) && port != PORT_A)) { | |
7b13b58a VS |
2488 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
2489 | ||
2490 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2491 | case DP_TRAINING_PATTERN_DISABLE: | |
2492 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2493 | break; | |
2494 | case DP_TRAINING_PATTERN_1: | |
2495 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2496 | break; | |
2497 | case DP_TRAINING_PATTERN_2: | |
2498 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2499 | break; | |
2500 | case DP_TRAINING_PATTERN_3: | |
2501 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2502 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2503 | break; | |
2504 | } | |
2505 | ||
2506 | } else { | |
2507 | if (IS_CHERRYVIEW(dev)) | |
2508 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2509 | else | |
2510 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2511 | ||
2512 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2513 | case DP_TRAINING_PATTERN_DISABLE: | |
2514 | *DP |= DP_LINK_TRAIN_OFF; | |
2515 | break; | |
2516 | case DP_TRAINING_PATTERN_1: | |
2517 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2518 | break; | |
2519 | case DP_TRAINING_PATTERN_2: | |
2520 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2521 | break; | |
2522 | case DP_TRAINING_PATTERN_3: | |
2523 | if (IS_CHERRYVIEW(dev)) { | |
2524 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2525 | } else { | |
2526 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2527 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2528 | } | |
2529 | break; | |
2530 | } | |
2531 | } | |
2532 | } | |
2533 | ||
2534 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2535 | { | |
2536 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2537 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2538 | ||
7b13b58a VS |
2539 | /* enable with pattern 1 (as per spec) */ |
2540 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2541 | DP_TRAINING_PATTERN_1); | |
2542 | ||
2543 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2544 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2545 | |
2546 | /* | |
2547 | * Magic for VLV/CHV. We _must_ first set up the register | |
2548 | * without actually enabling the port, and then do another | |
2549 | * write to enable the port. Otherwise link training will | |
2550 | * fail when the power sequencer is freshly used for this port. | |
2551 | */ | |
2552 | intel_dp->DP |= DP_PORT_EN; | |
2553 | ||
2554 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2555 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2556 | } |
2557 | ||
e8cb4558 | 2558 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2559 | { |
e8cb4558 DV |
2560 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2561 | struct drm_device *dev = encoder->base.dev; | |
2562 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2563 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2564 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
9b6de0a1 | 2565 | unsigned int lane_mask = 0x0; |
5d613501 | 2566 | |
0c33d8d7 DV |
2567 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2568 | return; | |
5d613501 | 2569 | |
093e3f13 VS |
2570 | pps_lock(intel_dp); |
2571 | ||
2572 | if (IS_VALLEYVIEW(dev)) | |
2573 | vlv_init_panel_power_sequencer(intel_dp); | |
2574 | ||
7b13b58a | 2575 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2576 | |
2577 | edp_panel_vdd_on(intel_dp); | |
2578 | edp_panel_on(intel_dp); | |
2579 | edp_panel_vdd_off(intel_dp, true); | |
2580 | ||
2581 | pps_unlock(intel_dp); | |
2582 | ||
61234fa5 | 2583 | if (IS_VALLEYVIEW(dev)) |
9b6de0a1 VS |
2584 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp), |
2585 | lane_mask); | |
61234fa5 | 2586 | |
f01eca2e | 2587 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2588 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2589 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2590 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2591 | |
6e3c9717 | 2592 | if (crtc->config->has_audio) { |
c1dec79a JN |
2593 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2594 | pipe_name(crtc->pipe)); | |
2595 | intel_audio_codec_enable(encoder); | |
2596 | } | |
ab1f90f9 | 2597 | } |
89b667f8 | 2598 | |
ecff4f3b JN |
2599 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2600 | { | |
828f5c6e JN |
2601 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2602 | ||
ecff4f3b | 2603 | intel_enable_dp(encoder); |
4be73780 | 2604 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2605 | } |
89b667f8 | 2606 | |
ab1f90f9 JN |
2607 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2608 | { | |
828f5c6e JN |
2609 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2610 | ||
4be73780 | 2611 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2612 | intel_psr_enable(intel_dp); |
d240f20f JB |
2613 | } |
2614 | ||
ecff4f3b | 2615 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2616 | { |
2617 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2618 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2619 | ||
8ac33ed3 DV |
2620 | intel_dp_prepare(encoder); |
2621 | ||
d41f1efb DV |
2622 | /* Only ilk+ has port A */ |
2623 | if (dport->port == PORT_A) { | |
2624 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2625 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2626 | } |
ab1f90f9 JN |
2627 | } |
2628 | ||
83b84597 VS |
2629 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2630 | { | |
2631 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2632 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2633 | enum pipe pipe = intel_dp->pps_pipe; | |
2634 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2635 | ||
2636 | edp_panel_vdd_off_sync(intel_dp); | |
2637 | ||
2638 | /* | |
2639 | * VLV seems to get confused when multiple power seqeuencers | |
2640 | * have the same port selected (even if only one has power/vdd | |
2641 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2642 | * CHV on the other hand doesn't seem to mind having the same port | |
2643 | * selected in multiple power seqeuencers, but let's clear the | |
2644 | * port select always when logically disconnecting a power sequencer | |
2645 | * from a port. | |
2646 | */ | |
2647 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2648 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2649 | I915_WRITE(pp_on_reg, 0); | |
2650 | POSTING_READ(pp_on_reg); | |
2651 | ||
2652 | intel_dp->pps_pipe = INVALID_PIPE; | |
2653 | } | |
2654 | ||
a4a5d2f8 VS |
2655 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2656 | enum pipe pipe) | |
2657 | { | |
2658 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2659 | struct intel_encoder *encoder; | |
2660 | ||
2661 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2662 | ||
ac3c12e4 VS |
2663 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2664 | return; | |
2665 | ||
a4a5d2f8 VS |
2666 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2667 | base.head) { | |
2668 | struct intel_dp *intel_dp; | |
773538e8 | 2669 | enum port port; |
a4a5d2f8 VS |
2670 | |
2671 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2672 | continue; | |
2673 | ||
2674 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2675 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2676 | |
2677 | if (intel_dp->pps_pipe != pipe) | |
2678 | continue; | |
2679 | ||
2680 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2681 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2682 | |
e02f9a06 | 2683 | WARN(encoder->base.crtc, |
034e43c6 VS |
2684 | "stealing pipe %c power sequencer from active eDP port %c\n", |
2685 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2686 | |
a4a5d2f8 | 2687 | /* make sure vdd is off before we steal it */ |
83b84597 | 2688 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2689 | } |
2690 | } | |
2691 | ||
2692 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2693 | { | |
2694 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2695 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2696 | struct drm_device *dev = encoder->base.dev; | |
2697 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2698 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2699 | |
2700 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2701 | ||
093e3f13 VS |
2702 | if (!is_edp(intel_dp)) |
2703 | return; | |
2704 | ||
a4a5d2f8 VS |
2705 | if (intel_dp->pps_pipe == crtc->pipe) |
2706 | return; | |
2707 | ||
2708 | /* | |
2709 | * If another power sequencer was being used on this | |
2710 | * port previously make sure to turn off vdd there while | |
2711 | * we still have control of it. | |
2712 | */ | |
2713 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2714 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2715 | |
2716 | /* | |
2717 | * We may be stealing the power | |
2718 | * sequencer from another port. | |
2719 | */ | |
2720 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2721 | ||
2722 | /* now it's all ours */ | |
2723 | intel_dp->pps_pipe = crtc->pipe; | |
2724 | ||
2725 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2726 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2727 | ||
2728 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2729 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2730 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2731 | } |
2732 | ||
ab1f90f9 | 2733 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2734 | { |
2bd2ad64 | 2735 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2736 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2737 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2738 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2739 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2740 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2741 | int pipe = intel_crtc->pipe; |
2742 | u32 val; | |
a4fc5ed6 | 2743 | |
a580516d | 2744 | mutex_lock(&dev_priv->sb_lock); |
89b667f8 | 2745 | |
ab3c759a | 2746 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2747 | val = 0; |
2748 | if (pipe) | |
2749 | val |= (1<<21); | |
2750 | else | |
2751 | val &= ~(1<<21); | |
2752 | val |= 0x001000c4; | |
ab3c759a CML |
2753 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2754 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2755 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2756 | |
a580516d | 2757 | mutex_unlock(&dev_priv->sb_lock); |
ab1f90f9 JN |
2758 | |
2759 | intel_enable_dp(encoder); | |
89b667f8 JB |
2760 | } |
2761 | ||
ecff4f3b | 2762 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2763 | { |
2764 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2765 | struct drm_device *dev = encoder->base.dev; | |
2766 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2767 | struct intel_crtc *intel_crtc = |
2768 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2769 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2770 | int pipe = intel_crtc->pipe; |
89b667f8 | 2771 | |
8ac33ed3 DV |
2772 | intel_dp_prepare(encoder); |
2773 | ||
89b667f8 | 2774 | /* Program Tx lane resets to default */ |
a580516d | 2775 | mutex_lock(&dev_priv->sb_lock); |
ab3c759a | 2776 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2777 | DPIO_PCS_TX_LANE2_RESET | |
2778 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2779 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2780 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2781 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2782 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2783 | DPIO_PCS_CLK_SOFT_RESET); | |
2784 | ||
2785 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2786 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2787 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2788 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
a580516d | 2789 | mutex_unlock(&dev_priv->sb_lock); |
a4fc5ed6 KP |
2790 | } |
2791 | ||
e4a1d846 CML |
2792 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2793 | { | |
2794 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2795 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2796 | struct drm_device *dev = encoder->base.dev; | |
2797 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2798 | struct intel_crtc *intel_crtc = |
2799 | to_intel_crtc(encoder->base.crtc); | |
2800 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2801 | int pipe = intel_crtc->pipe; | |
2e523e98 | 2802 | int data, i, stagger; |
949c1d43 | 2803 | u32 val; |
e4a1d846 | 2804 | |
a580516d | 2805 | mutex_lock(&dev_priv->sb_lock); |
949c1d43 | 2806 | |
570e2a74 VS |
2807 | /* allow hardware to manage TX FIFO reset source */ |
2808 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2809 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2810 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2811 | ||
2812 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2813 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2814 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2815 | ||
949c1d43 | 2816 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2817 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2818 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2819 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2820 | ||
2821 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2822 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2823 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2824 | ||
2825 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2826 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2827 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2828 | |
97fd4d5c | 2829 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2830 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2831 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2832 | |
2833 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 | 2834 | for (i = 0; i < 4; i++) { |
e4a1d846 CML |
2835 | /* Set the upar bit */ |
2836 | data = (i == 1) ? 0x0 : 0x1; | |
2837 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2838 | data << DPIO_UPAR_SHIFT); | |
2839 | } | |
2840 | ||
2841 | /* Data lane stagger programming */ | |
2e523e98 VS |
2842 | if (intel_crtc->config->port_clock > 270000) |
2843 | stagger = 0x18; | |
2844 | else if (intel_crtc->config->port_clock > 135000) | |
2845 | stagger = 0xd; | |
2846 | else if (intel_crtc->config->port_clock > 67500) | |
2847 | stagger = 0x7; | |
2848 | else if (intel_crtc->config->port_clock > 33750) | |
2849 | stagger = 0x4; | |
2850 | else | |
2851 | stagger = 0x2; | |
2852 | ||
2853 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2854 | val |= DPIO_TX2_STAGGER_MASK(0x1f); | |
2855 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2856 | ||
2857 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2858 | val |= DPIO_TX2_STAGGER_MASK(0x1f); | |
2859 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2860 | ||
2861 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch), | |
2862 | DPIO_LANESTAGGER_STRAP(stagger) | | |
2863 | DPIO_LANESTAGGER_STRAP_OVRD | | |
2864 | DPIO_TX1_STAGGER_MASK(0x1f) | | |
2865 | DPIO_TX1_STAGGER_MULT(6) | | |
2866 | DPIO_TX2_STAGGER_MULT(0)); | |
2867 | ||
2868 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch), | |
2869 | DPIO_LANESTAGGER_STRAP(stagger) | | |
2870 | DPIO_LANESTAGGER_STRAP_OVRD | | |
2871 | DPIO_TX1_STAGGER_MASK(0x1f) | | |
2872 | DPIO_TX1_STAGGER_MULT(7) | | |
2873 | DPIO_TX2_STAGGER_MULT(5)); | |
e4a1d846 | 2874 | |
a580516d | 2875 | mutex_unlock(&dev_priv->sb_lock); |
e4a1d846 | 2876 | |
e4a1d846 | 2877 | intel_enable_dp(encoder); |
e4a1d846 CML |
2878 | } |
2879 | ||
9197c88b VS |
2880 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2881 | { | |
2882 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2883 | struct drm_device *dev = encoder->base.dev; | |
2884 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2885 | struct intel_crtc *intel_crtc = | |
2886 | to_intel_crtc(encoder->base.crtc); | |
2887 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2888 | enum pipe pipe = intel_crtc->pipe; | |
2889 | u32 val; | |
2890 | ||
625695f8 VS |
2891 | intel_dp_prepare(encoder); |
2892 | ||
a580516d | 2893 | mutex_lock(&dev_priv->sb_lock); |
9197c88b | 2894 | |
b9e5ac3c VS |
2895 | /* program left/right clock distribution */ |
2896 | if (pipe != PIPE_B) { | |
2897 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2898 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2899 | if (ch == DPIO_CH0) | |
2900 | val |= CHV_BUFLEFTENA1_FORCE; | |
2901 | if (ch == DPIO_CH1) | |
2902 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2903 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2904 | } else { | |
2905 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2906 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2907 | if (ch == DPIO_CH0) | |
2908 | val |= CHV_BUFLEFTENA2_FORCE; | |
2909 | if (ch == DPIO_CH1) | |
2910 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2911 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2912 | } | |
2913 | ||
9197c88b VS |
2914 | /* program clock channel usage */ |
2915 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2916 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2917 | if (pipe != PIPE_B) | |
2918 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2919 | else | |
2920 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2921 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2922 | ||
2923 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2924 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2925 | if (pipe != PIPE_B) | |
2926 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2927 | else | |
2928 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2929 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2930 | ||
2931 | /* | |
2932 | * This a a bit weird since generally CL | |
2933 | * matches the pipe, but here we need to | |
2934 | * pick the CL based on the port. | |
2935 | */ | |
2936 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2937 | if (pipe != PIPE_B) | |
2938 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2939 | else | |
2940 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2941 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2942 | ||
a580516d | 2943 | mutex_unlock(&dev_priv->sb_lock); |
9197c88b VS |
2944 | } |
2945 | ||
d6db995f VS |
2946 | static void chv_dp_post_pll_disable(struct intel_encoder *encoder) |
2947 | { | |
2948 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); | |
2949 | enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe; | |
2950 | u32 val; | |
2951 | ||
2952 | mutex_lock(&dev_priv->sb_lock); | |
2953 | ||
2954 | /* disable left/right clock distribution */ | |
2955 | if (pipe != PIPE_B) { | |
2956 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2957 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2958 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2959 | } else { | |
2960 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2961 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2962 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2963 | } | |
2964 | ||
2965 | mutex_unlock(&dev_priv->sb_lock); | |
2966 | } | |
2967 | ||
a4fc5ed6 | 2968 | /* |
df0c237d JB |
2969 | * Native read with retry for link status and receiver capability reads for |
2970 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2971 | * |
2972 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2973 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2974 | */ |
9d1a1031 JN |
2975 | static ssize_t |
2976 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2977 | void *buffer, size_t size) | |
a4fc5ed6 | 2978 | { |
9d1a1031 JN |
2979 | ssize_t ret; |
2980 | int i; | |
61da5fab | 2981 | |
f6a19066 VS |
2982 | /* |
2983 | * Sometime we just get the same incorrect byte repeated | |
2984 | * over the entire buffer. Doing just one throw away read | |
2985 | * initially seems to "solve" it. | |
2986 | */ | |
2987 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
2988 | ||
61da5fab | 2989 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2990 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2991 | if (ret == size) | |
2992 | return ret; | |
61da5fab JB |
2993 | msleep(1); |
2994 | } | |
a4fc5ed6 | 2995 | |
9d1a1031 | 2996 | return ret; |
a4fc5ed6 KP |
2997 | } |
2998 | ||
2999 | /* | |
3000 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
3001 | * link status information | |
3002 | */ | |
3003 | static bool | |
93f62dad | 3004 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 3005 | { |
9d1a1031 JN |
3006 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3007 | DP_LANE0_1_STATUS, | |
3008 | link_status, | |
3009 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
3010 | } |
3011 | ||
1100244e | 3012 | /* These are source-specific values. */ |
a4fc5ed6 | 3013 | static uint8_t |
1a2eb460 | 3014 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 3015 | { |
30add22d | 3016 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 3017 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 3018 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 3019 | |
9314726b VK |
3020 | if (IS_BROXTON(dev)) |
3021 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
3022 | else if (INTEL_INFO(dev)->gen >= 9) { | |
9e458034 | 3023 | if (dev_priv->edp_low_vswing && port == PORT_A) |
7ad14a29 | 3024 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
5a9d1f1a | 3025 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 3026 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 3027 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 3028 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 3029 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 3030 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 3031 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 3032 | else |
bd60018a | 3033 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
3034 | } |
3035 | ||
3036 | static uint8_t | |
3037 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
3038 | { | |
30add22d | 3039 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 3040 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 3041 | |
5a9d1f1a DL |
3042 | if (INTEL_INFO(dev)->gen >= 9) { |
3043 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
3044 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
3045 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3046 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3047 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3048 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3049 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
3050 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
3051 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
3052 | default: |
3053 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
3054 | } | |
3055 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 3056 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3057 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3058 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3059 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3060 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3061 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3062 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3063 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 3064 | default: |
bd60018a | 3065 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 3066 | } |
e2fa6fba P |
3067 | } else if (IS_VALLEYVIEW(dev)) { |
3068 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
3069 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3070 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3071 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3072 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3073 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3074 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3075 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 3076 | default: |
bd60018a | 3077 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 3078 | } |
bc7d38a4 | 3079 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 3080 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3081 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3082 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3083 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3084 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3085 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 3086 | default: |
bd60018a | 3087 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
3088 | } |
3089 | } else { | |
3090 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
3091 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3092 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3093 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3094 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3095 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3096 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3097 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 3098 | default: |
bd60018a | 3099 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 3100 | } |
a4fc5ed6 KP |
3101 | } |
3102 | } | |
3103 | ||
5829975c | 3104 | static uint32_t vlv_signal_levels(struct intel_dp *intel_dp) |
e2fa6fba P |
3105 | { |
3106 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3107 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3108 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
3109 | struct intel_crtc *intel_crtc = |
3110 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
3111 | unsigned long demph_reg_value, preemph_reg_value, |
3112 | uniqtranscale_reg_value; | |
3113 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 3114 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 3115 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
3116 | |
3117 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3118 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
3119 | preemph_reg_value = 0x0004000; |
3120 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3121 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3122 | demph_reg_value = 0x2B405555; |
3123 | uniqtranscale_reg_value = 0x552AB83A; | |
3124 | break; | |
bd60018a | 3125 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3126 | demph_reg_value = 0x2B404040; |
3127 | uniqtranscale_reg_value = 0x5548B83A; | |
3128 | break; | |
bd60018a | 3129 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3130 | demph_reg_value = 0x2B245555; |
3131 | uniqtranscale_reg_value = 0x5560B83A; | |
3132 | break; | |
bd60018a | 3133 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
3134 | demph_reg_value = 0x2B405555; |
3135 | uniqtranscale_reg_value = 0x5598DA3A; | |
3136 | break; | |
3137 | default: | |
3138 | return 0; | |
3139 | } | |
3140 | break; | |
bd60018a | 3141 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
3142 | preemph_reg_value = 0x0002000; |
3143 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3144 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3145 | demph_reg_value = 0x2B404040; |
3146 | uniqtranscale_reg_value = 0x5552B83A; | |
3147 | break; | |
bd60018a | 3148 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3149 | demph_reg_value = 0x2B404848; |
3150 | uniqtranscale_reg_value = 0x5580B83A; | |
3151 | break; | |
bd60018a | 3152 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3153 | demph_reg_value = 0x2B404040; |
3154 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3155 | break; | |
3156 | default: | |
3157 | return 0; | |
3158 | } | |
3159 | break; | |
bd60018a | 3160 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
3161 | preemph_reg_value = 0x0000000; |
3162 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3163 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3164 | demph_reg_value = 0x2B305555; |
3165 | uniqtranscale_reg_value = 0x5570B83A; | |
3166 | break; | |
bd60018a | 3167 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3168 | demph_reg_value = 0x2B2B4040; |
3169 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3170 | break; | |
3171 | default: | |
3172 | return 0; | |
3173 | } | |
3174 | break; | |
bd60018a | 3175 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
3176 | preemph_reg_value = 0x0006000; |
3177 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3178 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3179 | demph_reg_value = 0x1B405555; |
3180 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3181 | break; | |
3182 | default: | |
3183 | return 0; | |
3184 | } | |
3185 | break; | |
3186 | default: | |
3187 | return 0; | |
3188 | } | |
3189 | ||
a580516d | 3190 | mutex_lock(&dev_priv->sb_lock); |
ab3c759a CML |
3191 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3192 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
3193 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3194 | uniqtranscale_reg_value); |
ab3c759a CML |
3195 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3196 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3197 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3198 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
a580516d | 3199 | mutex_unlock(&dev_priv->sb_lock); |
e2fa6fba P |
3200 | |
3201 | return 0; | |
3202 | } | |
3203 | ||
67fa24b4 VS |
3204 | static bool chv_need_uniq_trans_scale(uint8_t train_set) |
3205 | { | |
3206 | return (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) == DP_TRAIN_PRE_EMPH_LEVEL_0 && | |
3207 | (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) == DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
3208 | } | |
3209 | ||
5829975c | 3210 | static uint32_t chv_signal_levels(struct intel_dp *intel_dp) |
e4a1d846 CML |
3211 | { |
3212 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3213 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3214 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3215 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3216 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3217 | uint8_t train_set = intel_dp->train_set[0]; |
3218 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3219 | enum pipe pipe = intel_crtc->pipe; |
3220 | int i; | |
e4a1d846 CML |
3221 | |
3222 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3223 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3224 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3225 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3226 | deemph_reg_value = 128; |
3227 | margin_reg_value = 52; | |
3228 | break; | |
bd60018a | 3229 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3230 | deemph_reg_value = 128; |
3231 | margin_reg_value = 77; | |
3232 | break; | |
bd60018a | 3233 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3234 | deemph_reg_value = 128; |
3235 | margin_reg_value = 102; | |
3236 | break; | |
bd60018a | 3237 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3238 | deemph_reg_value = 128; |
3239 | margin_reg_value = 154; | |
3240 | /* FIXME extra to set for 1200 */ | |
3241 | break; | |
3242 | default: | |
3243 | return 0; | |
3244 | } | |
3245 | break; | |
bd60018a | 3246 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3247 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3248 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3249 | deemph_reg_value = 85; |
3250 | margin_reg_value = 78; | |
3251 | break; | |
bd60018a | 3252 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3253 | deemph_reg_value = 85; |
3254 | margin_reg_value = 116; | |
3255 | break; | |
bd60018a | 3256 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3257 | deemph_reg_value = 85; |
3258 | margin_reg_value = 154; | |
3259 | break; | |
3260 | default: | |
3261 | return 0; | |
3262 | } | |
3263 | break; | |
bd60018a | 3264 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3265 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3266 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3267 | deemph_reg_value = 64; |
3268 | margin_reg_value = 104; | |
3269 | break; | |
bd60018a | 3270 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3271 | deemph_reg_value = 64; |
3272 | margin_reg_value = 154; | |
3273 | break; | |
3274 | default: | |
3275 | return 0; | |
3276 | } | |
3277 | break; | |
bd60018a | 3278 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3279 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3280 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3281 | deemph_reg_value = 43; |
3282 | margin_reg_value = 154; | |
3283 | break; | |
3284 | default: | |
3285 | return 0; | |
3286 | } | |
3287 | break; | |
3288 | default: | |
3289 | return 0; | |
3290 | } | |
3291 | ||
a580516d | 3292 | mutex_lock(&dev_priv->sb_lock); |
e4a1d846 CML |
3293 | |
3294 | /* Clear calc init */ | |
1966e59e VS |
3295 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3296 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3297 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3298 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3299 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3300 | ||
3301 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3302 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3303 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3304 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3305 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3306 | |
a02ef3c7 VS |
3307 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3308 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3309 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3310 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3311 | ||
3312 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3313 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3314 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3315 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3316 | ||
e4a1d846 | 3317 | /* Program swing deemph */ |
f72df8db VS |
3318 | for (i = 0; i < 4; i++) { |
3319 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3320 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3321 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3322 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3323 | } | |
e4a1d846 CML |
3324 | |
3325 | /* Program swing margin */ | |
f72df8db VS |
3326 | for (i = 0; i < 4; i++) { |
3327 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
67fa24b4 | 3328 | |
1fb44505 VS |
3329 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3330 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
67fa24b4 VS |
3331 | |
3332 | /* | |
3333 | * Supposedly this value shouldn't matter when unique transition | |
3334 | * scale is disabled, but in fact it does matter. Let's just | |
3335 | * always program the same value and hope it's OK. | |
3336 | */ | |
3337 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3338 | val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT; | |
3339 | ||
f72df8db VS |
3340 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3341 | } | |
e4a1d846 | 3342 | |
67fa24b4 VS |
3343 | /* |
3344 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3345 | * for ch1. Might be a typo in the doc. | |
3346 | * For now, for this unique transition scale selection, set bit | |
3347 | * 27 for ch0 and ch1. | |
3348 | */ | |
f72df8db VS |
3349 | for (i = 0; i < 4; i++) { |
3350 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
67fa24b4 | 3351 | if (chv_need_uniq_trans_scale(train_set)) |
f72df8db | 3352 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; |
67fa24b4 VS |
3353 | else |
3354 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3355 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
e4a1d846 CML |
3356 | } |
3357 | ||
3358 | /* Start swing calculation */ | |
1966e59e VS |
3359 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3360 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3361 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3362 | ||
3363 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3364 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3365 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3366 | |
3367 | /* LRC Bypass */ | |
3368 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3369 | val |= DPIO_LRC_BYPASS; | |
3370 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3371 | ||
a580516d | 3372 | mutex_unlock(&dev_priv->sb_lock); |
e4a1d846 CML |
3373 | |
3374 | return 0; | |
3375 | } | |
3376 | ||
a4fc5ed6 | 3377 | static void |
0301b3ac JN |
3378 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3379 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3380 | { |
3381 | uint8_t v = 0; | |
3382 | uint8_t p = 0; | |
3383 | int lane; | |
1a2eb460 KP |
3384 | uint8_t voltage_max; |
3385 | uint8_t preemph_max; | |
a4fc5ed6 | 3386 | |
901c2daf | 3387 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3388 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3389 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3390 | |
3391 | if (this_v > v) | |
3392 | v = this_v; | |
3393 | if (this_p > p) | |
3394 | p = this_p; | |
3395 | } | |
3396 | ||
1a2eb460 | 3397 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3398 | if (v >= voltage_max) |
3399 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3400 | |
1a2eb460 KP |
3401 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3402 | if (p >= preemph_max) | |
3403 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3404 | |
3405 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3406 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3407 | } |
3408 | ||
3409 | static uint32_t | |
5829975c | 3410 | gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3411 | { |
3cf2efb1 | 3412 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3413 | |
3cf2efb1 | 3414 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3415 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3416 | default: |
3417 | signal_levels |= DP_VOLTAGE_0_4; | |
3418 | break; | |
bd60018a | 3419 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3420 | signal_levels |= DP_VOLTAGE_0_6; |
3421 | break; | |
bd60018a | 3422 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3423 | signal_levels |= DP_VOLTAGE_0_8; |
3424 | break; | |
bd60018a | 3425 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3426 | signal_levels |= DP_VOLTAGE_1_2; |
3427 | break; | |
3428 | } | |
3cf2efb1 | 3429 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3430 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3431 | default: |
3432 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3433 | break; | |
bd60018a | 3434 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3435 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3436 | break; | |
bd60018a | 3437 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3438 | signal_levels |= DP_PRE_EMPHASIS_6; |
3439 | break; | |
bd60018a | 3440 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3441 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3442 | break; | |
3443 | } | |
3444 | return signal_levels; | |
3445 | } | |
3446 | ||
e3421a18 ZW |
3447 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3448 | static uint32_t | |
5829975c | 3449 | gen6_edp_signal_levels(uint8_t train_set) |
e3421a18 | 3450 | { |
3c5a62b5 YL |
3451 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3452 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3453 | switch (signal_levels) { | |
bd60018a SJ |
3454 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3455 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3456 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3457 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3458 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3459 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3460 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3461 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3462 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3463 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3464 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3465 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3466 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3467 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3468 | default: |
3c5a62b5 YL |
3469 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3470 | "0x%x\n", signal_levels); | |
3471 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3472 | } |
3473 | } | |
3474 | ||
1a2eb460 KP |
3475 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3476 | static uint32_t | |
5829975c | 3477 | gen7_edp_signal_levels(uint8_t train_set) |
1a2eb460 KP |
3478 | { |
3479 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3480 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3481 | switch (signal_levels) { | |
bd60018a | 3482 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3483 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3484 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3485 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3486 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3487 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3488 | ||
bd60018a | 3489 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3490 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3491 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3492 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3493 | ||
bd60018a | 3494 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3495 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3496 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3497 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3498 | ||
3499 | default: | |
3500 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3501 | "0x%x\n", signal_levels); | |
3502 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3503 | } | |
3504 | } | |
3505 | ||
f0a3424e PZ |
3506 | /* Properly updates "DP" with the correct signal levels. */ |
3507 | static void | |
3508 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3509 | { | |
3510 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3511 | enum port port = intel_dig_port->port; |
f0a3424e | 3512 | struct drm_device *dev = intel_dig_port->base.base.dev; |
f8896f5d | 3513 | uint32_t signal_levels, mask = 0; |
f0a3424e PZ |
3514 | uint8_t train_set = intel_dp->train_set[0]; |
3515 | ||
f8896f5d DW |
3516 | if (HAS_DDI(dev)) { |
3517 | signal_levels = ddi_signal_levels(intel_dp); | |
3518 | ||
3519 | if (IS_BROXTON(dev)) | |
3520 | signal_levels = 0; | |
3521 | else | |
3522 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 | 3523 | } else if (IS_CHERRYVIEW(dev)) { |
5829975c | 3524 | signal_levels = chv_signal_levels(intel_dp); |
e2fa6fba | 3525 | } else if (IS_VALLEYVIEW(dev)) { |
5829975c | 3526 | signal_levels = vlv_signal_levels(intel_dp); |
bc7d38a4 | 3527 | } else if (IS_GEN7(dev) && port == PORT_A) { |
5829975c | 3528 | signal_levels = gen7_edp_signal_levels(train_set); |
f0a3424e | 3529 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
bc7d38a4 | 3530 | } else if (IS_GEN6(dev) && port == PORT_A) { |
5829975c | 3531 | signal_levels = gen6_edp_signal_levels(train_set); |
f0a3424e PZ |
3532 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
3533 | } else { | |
5829975c | 3534 | signal_levels = gen4_signal_levels(train_set); |
f0a3424e PZ |
3535 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
3536 | } | |
3537 | ||
96fb9f9b VK |
3538 | if (mask) |
3539 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3540 | ||
3541 | DRM_DEBUG_KMS("Using vswing level %d\n", | |
3542 | train_set & DP_TRAIN_VOLTAGE_SWING_MASK); | |
3543 | DRM_DEBUG_KMS("Using pre-emphasis level %d\n", | |
3544 | (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> | |
3545 | DP_TRAIN_PRE_EMPHASIS_SHIFT); | |
f0a3424e PZ |
3546 | |
3547 | *DP = (*DP & ~mask) | signal_levels; | |
3548 | } | |
3549 | ||
a4fc5ed6 | 3550 | static bool |
ea5b213a | 3551 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3552 | uint32_t *DP, |
58e10eb9 | 3553 | uint8_t dp_train_pat) |
a4fc5ed6 | 3554 | { |
174edf1f | 3555 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
90a6b7b0 VS |
3556 | struct drm_i915_private *dev_priv = |
3557 | to_i915(intel_dig_port->base.base.dev); | |
2cdfe6c8 JN |
3558 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3559 | int ret, len; | |
a4fc5ed6 | 3560 | |
7b13b58a | 3561 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3562 | |
70aff66c | 3563 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3564 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3565 | |
2cdfe6c8 JN |
3566 | buf[0] = dp_train_pat; |
3567 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3568 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3569 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3570 | len = 1; | |
3571 | } else { | |
3572 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
901c2daf VS |
3573 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); |
3574 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3575 | } |
a4fc5ed6 | 3576 | |
9d1a1031 JN |
3577 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3578 | buf, len); | |
2cdfe6c8 JN |
3579 | |
3580 | return ret == len; | |
a4fc5ed6 KP |
3581 | } |
3582 | ||
70aff66c JN |
3583 | static bool |
3584 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3585 | uint8_t dp_train_pat) | |
3586 | { | |
4e96c977 MK |
3587 | if (!intel_dp->train_set_valid) |
3588 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); | |
70aff66c JN |
3589 | intel_dp_set_signal_levels(intel_dp, DP); |
3590 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3591 | } | |
3592 | ||
3593 | static bool | |
3594 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3595 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3596 | { |
3597 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
90a6b7b0 VS |
3598 | struct drm_i915_private *dev_priv = |
3599 | to_i915(intel_dig_port->base.base.dev); | |
70aff66c JN |
3600 | int ret; |
3601 | ||
3602 | intel_get_adjust_train(intel_dp, link_status); | |
3603 | intel_dp_set_signal_levels(intel_dp, DP); | |
3604 | ||
3605 | I915_WRITE(intel_dp->output_reg, *DP); | |
3606 | POSTING_READ(intel_dp->output_reg); | |
3607 | ||
9d1a1031 | 3608 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
901c2daf | 3609 | intel_dp->train_set, intel_dp->lane_count); |
70aff66c | 3610 | |
901c2daf | 3611 | return ret == intel_dp->lane_count; |
70aff66c JN |
3612 | } |
3613 | ||
3ab9c637 ID |
3614 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3615 | { | |
3616 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3617 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3618 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3619 | enum port port = intel_dig_port->port; | |
3620 | uint32_t val; | |
3621 | ||
3622 | if (!HAS_DDI(dev)) | |
3623 | return; | |
3624 | ||
3625 | val = I915_READ(DP_TP_CTL(port)); | |
3626 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3627 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3628 | I915_WRITE(DP_TP_CTL(port), val); | |
3629 | ||
3630 | /* | |
3631 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3632 | * we need to set idle transmission mode is to work around a HW issue | |
3633 | * where we enable the pipe while not in idle link-training mode. | |
3634 | * In this case there is requirement to wait for a minimum number of | |
3635 | * idle patterns to be sent. | |
3636 | */ | |
3637 | if (port == PORT_A) | |
3638 | return; | |
3639 | ||
3640 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3641 | 1)) | |
3642 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3643 | } | |
3644 | ||
33a34e4e | 3645 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3646 | void |
33a34e4e | 3647 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3648 | { |
da63a9f2 | 3649 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3650 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3651 | int i; |
3652 | uint8_t voltage; | |
cdb0e95b | 3653 | int voltage_tries, loop_tries; |
ea5b213a | 3654 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3655 | uint8_t link_config[2]; |
04a60f9f | 3656 | uint8_t link_bw, rate_select; |
a4fc5ed6 | 3657 | |
affa9354 | 3658 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3659 | intel_ddi_prepare_link_retrain(encoder); |
3660 | ||
901c2daf | 3661 | intel_dp_compute_rate(intel_dp, intel_dp->link_rate, |
04a60f9f VS |
3662 | &link_bw, &rate_select); |
3663 | ||
3cf2efb1 | 3664 | /* Write the link configuration data */ |
04a60f9f | 3665 | link_config[0] = link_bw; |
901c2daf | 3666 | link_config[1] = intel_dp->lane_count; |
6aba5b6c JN |
3667 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
3668 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3669 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
94ca719e | 3670 | if (intel_dp->num_sink_rates) |
a8f3ef61 | 3671 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
04a60f9f | 3672 | &rate_select, 1); |
6aba5b6c JN |
3673 | |
3674 | link_config[0] = 0; | |
3675 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3676 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3677 | |
3678 | DP |= DP_PORT_EN; | |
1a2eb460 | 3679 | |
70aff66c JN |
3680 | /* clock recovery */ |
3681 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3682 | DP_TRAINING_PATTERN_1 | | |
3683 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3684 | DRM_ERROR("failed to enable link training\n"); | |
3685 | return; | |
3686 | } | |
3687 | ||
a4fc5ed6 | 3688 | voltage = 0xff; |
cdb0e95b KP |
3689 | voltage_tries = 0; |
3690 | loop_tries = 0; | |
a4fc5ed6 | 3691 | for (;;) { |
70aff66c | 3692 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3693 | |
a7c9655f | 3694 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3695 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3696 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3697 | break; |
93f62dad | 3698 | } |
a4fc5ed6 | 3699 | |
901c2daf | 3700 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3701 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3702 | break; |
3703 | } | |
3704 | ||
4e96c977 MK |
3705 | /* |
3706 | * if we used previously trained voltage and pre-emphasis values | |
3707 | * and we don't get clock recovery, reset link training values | |
3708 | */ | |
3709 | if (intel_dp->train_set_valid) { | |
3710 | DRM_DEBUG_KMS("clock recovery not ok, reset"); | |
3711 | /* clear the flag as we are not reusing train set */ | |
3712 | intel_dp->train_set_valid = false; | |
3713 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3714 | DP_TRAINING_PATTERN_1 | | |
3715 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3716 | DRM_ERROR("failed to enable link training\n"); | |
3717 | return; | |
3718 | } | |
3719 | continue; | |
3720 | } | |
3721 | ||
3cf2efb1 | 3722 | /* Check to see if we've tried the max voltage */ |
901c2daf | 3723 | for (i = 0; i < intel_dp->lane_count; i++) |
3cf2efb1 | 3724 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) |
a4fc5ed6 | 3725 | break; |
901c2daf | 3726 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3727 | ++loop_tries; |
3728 | if (loop_tries == 5) { | |
3def84b3 | 3729 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3730 | break; |
3731 | } | |
70aff66c JN |
3732 | intel_dp_reset_link_train(intel_dp, &DP, |
3733 | DP_TRAINING_PATTERN_1 | | |
3734 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3735 | voltage_tries = 0; |
3736 | continue; | |
3737 | } | |
a4fc5ed6 | 3738 | |
3cf2efb1 | 3739 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3740 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3741 | ++voltage_tries; |
b06fbda3 | 3742 | if (voltage_tries == 5) { |
3def84b3 | 3743 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3744 | break; |
3745 | } | |
3746 | } else | |
3747 | voltage_tries = 0; | |
3748 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3749 | |
70aff66c JN |
3750 | /* Update training set as requested by target */ |
3751 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3752 | DRM_ERROR("failed to update link training\n"); | |
3753 | break; | |
3754 | } | |
a4fc5ed6 KP |
3755 | } |
3756 | ||
33a34e4e JB |
3757 | intel_dp->DP = DP; |
3758 | } | |
3759 | ||
c19b0669 | 3760 | void |
33a34e4e JB |
3761 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3762 | { | |
33a34e4e | 3763 | bool channel_eq = false; |
37f80975 | 3764 | int tries, cr_tries; |
33a34e4e | 3765 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3766 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3767 | ||
a79b8165 | 3768 | /* Training Pattern 3 for HBR2 or 1.2 devices that support it*/ |
901c2daf | 3769 | if (intel_dp->link_rate == 540000 || intel_dp->use_tps3) |
06ea66b6 | 3770 | training_pattern = DP_TRAINING_PATTERN_3; |
33a34e4e | 3771 | |
a4fc5ed6 | 3772 | /* channel equalization */ |
70aff66c | 3773 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3774 | training_pattern | |
70aff66c JN |
3775 | DP_LINK_SCRAMBLING_DISABLE)) { |
3776 | DRM_ERROR("failed to start channel equalization\n"); | |
3777 | return; | |
3778 | } | |
3779 | ||
a4fc5ed6 | 3780 | tries = 0; |
37f80975 | 3781 | cr_tries = 0; |
a4fc5ed6 KP |
3782 | channel_eq = false; |
3783 | for (;;) { | |
70aff66c | 3784 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3785 | |
37f80975 JB |
3786 | if (cr_tries > 5) { |
3787 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3788 | break; |
3789 | } | |
3790 | ||
a7c9655f | 3791 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3792 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3793 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3794 | break; |
70aff66c | 3795 | } |
a4fc5ed6 | 3796 | |
37f80975 | 3797 | /* Make sure clock is still ok */ |
90a6b7b0 | 3798 | if (!drm_dp_clock_recovery_ok(link_status, |
901c2daf | 3799 | 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 | ||
90a6b7b0 | 3809 | if (drm_dp_channel_eq_ok(link_status, |
901c2daf | 3810 | intel_dp->lane_count)) { |
3cf2efb1 CW |
3811 | channel_eq = true; |
3812 | break; | |
3813 | } | |
a4fc5ed6 | 3814 | |
37f80975 JB |
3815 | /* Try 5 times, then try clock recovery if that fails */ |
3816 | if (tries > 5) { | |
4e96c977 | 3817 | intel_dp->train_set_valid = false; |
37f80975 | 3818 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3819 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3820 | training_pattern | |
70aff66c | 3821 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3822 | tries = 0; |
3823 | cr_tries++; | |
3824 | continue; | |
3825 | } | |
a4fc5ed6 | 3826 | |
70aff66c JN |
3827 | /* Update training set as requested by target */ |
3828 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3829 | DRM_ERROR("failed to update link training\n"); | |
3830 | break; | |
3831 | } | |
3cf2efb1 | 3832 | ++tries; |
869184a6 | 3833 | } |
3cf2efb1 | 3834 | |
3ab9c637 ID |
3835 | intel_dp_set_idle_link_train(intel_dp); |
3836 | ||
3837 | intel_dp->DP = DP; | |
3838 | ||
4e96c977 | 3839 | if (channel_eq) { |
5fa836a9 | 3840 | intel_dp->train_set_valid = true; |
07f42258 | 3841 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
4e96c977 | 3842 | } |
3ab9c637 ID |
3843 | } |
3844 | ||
3845 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3846 | { | |
70aff66c | 3847 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3848 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3849 | } |
3850 | ||
3851 | static void | |
ea5b213a | 3852 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3853 | { |
da63a9f2 | 3854 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1612c8bd | 3855 | struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); |
bc7d38a4 | 3856 | enum port port = intel_dig_port->port; |
da63a9f2 | 3857 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3858 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3859 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3860 | |
bc76e320 | 3861 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3862 | return; |
3863 | ||
0c33d8d7 | 3864 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3865 | return; |
3866 | ||
28c97730 | 3867 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3868 | |
39e5fa88 VS |
3869 | if ((IS_GEN7(dev) && port == PORT_A) || |
3870 | (HAS_PCH_CPT(dev) && port != PORT_A)) { | |
e3421a18 | 3871 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
1612c8bd | 3872 | DP |= DP_LINK_TRAIN_PAT_IDLE_CPT; |
e3421a18 | 3873 | } else { |
aad3d14d VS |
3874 | if (IS_CHERRYVIEW(dev)) |
3875 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3876 | else | |
3877 | DP &= ~DP_LINK_TRAIN_MASK; | |
1612c8bd | 3878 | DP |= DP_LINK_TRAIN_PAT_IDLE; |
e3421a18 | 3879 | } |
1612c8bd | 3880 | I915_WRITE(intel_dp->output_reg, DP); |
fe255d00 | 3881 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3882 | |
1612c8bd VS |
3883 | DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); |
3884 | I915_WRITE(intel_dp->output_reg, DP); | |
3885 | POSTING_READ(intel_dp->output_reg); | |
3886 | ||
3887 | /* | |
3888 | * HW workaround for IBX, we need to move the port | |
3889 | * to transcoder A after disabling it to allow the | |
3890 | * matching HDMI port to be enabled on transcoder A. | |
3891 | */ | |
3892 | if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B && port != PORT_A) { | |
3893 | /* always enable with pattern 1 (as per spec) */ | |
3894 | DP &= ~(DP_PIPEB_SELECT | DP_LINK_TRAIN_MASK); | |
3895 | DP |= DP_PORT_EN | DP_LINK_TRAIN_PAT_1; | |
3896 | I915_WRITE(intel_dp->output_reg, DP); | |
3897 | POSTING_READ(intel_dp->output_reg); | |
3898 | ||
3899 | DP &= ~DP_PORT_EN; | |
5bddd17f | 3900 | I915_WRITE(intel_dp->output_reg, DP); |
0ca09685 | 3901 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3902 | } |
3903 | ||
f01eca2e | 3904 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3905 | } |
3906 | ||
26d61aad KP |
3907 | static bool |
3908 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3909 | { |
a031d709 RV |
3910 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3911 | struct drm_device *dev = dig_port->base.base.dev; | |
3912 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3913 | uint8_t rev; |
a031d709 | 3914 | |
9d1a1031 JN |
3915 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3916 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3917 | return false; /* aux transfer failed */ |
92fd8fd1 | 3918 | |
a8e98153 | 3919 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3920 | |
edb39244 AJ |
3921 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3922 | return false; /* DPCD not present */ | |
3923 | ||
2293bb5c SK |
3924 | /* Check if the panel supports PSR */ |
3925 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3926 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3927 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3928 | intel_dp->psr_dpcd, | |
3929 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3930 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3931 | dev_priv->psr.sink_support = true; | |
50003939 | 3932 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3933 | } |
474d1ec4 SJ |
3934 | |
3935 | if (INTEL_INFO(dev)->gen >= 9 && | |
3936 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { | |
3937 | uint8_t frame_sync_cap; | |
3938 | ||
3939 | dev_priv->psr.sink_support = true; | |
3940 | intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3941 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, | |
3942 | &frame_sync_cap, 1); | |
3943 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; | |
3944 | /* PSR2 needs frame sync as well */ | |
3945 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; | |
3946 | DRM_DEBUG_KMS("PSR2 %s on sink", | |
3947 | dev_priv->psr.psr2_support ? "supported" : "not supported"); | |
3948 | } | |
50003939 JN |
3949 | } |
3950 | ||
7809a611 | 3951 | /* Training Pattern 3 support, both source and sink */ |
06ea66b6 | 3952 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
7809a611 JN |
3953 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
3954 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { | |
06ea66b6 | 3955 | intel_dp->use_tps3 = true; |
f8d8a672 | 3956 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3957 | } else |
3958 | intel_dp->use_tps3 = false; | |
3959 | ||
fc0f8e25 SJ |
3960 | /* Intermediate frequency support */ |
3961 | if (is_edp(intel_dp) && | |
3962 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3963 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
3964 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
94ca719e | 3965 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
ea2d8a42 VS |
3966 | int i; |
3967 | ||
fc0f8e25 SJ |
3968 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
3969 | DP_SUPPORTED_LINK_RATES, | |
94ca719e VS |
3970 | sink_rates, |
3971 | sizeof(sink_rates)); | |
ea2d8a42 | 3972 | |
94ca719e VS |
3973 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
3974 | int val = le16_to_cpu(sink_rates[i]); | |
ea2d8a42 VS |
3975 | |
3976 | if (val == 0) | |
3977 | break; | |
3978 | ||
af77b974 SJ |
3979 | /* Value read is in kHz while drm clock is saved in deca-kHz */ |
3980 | intel_dp->sink_rates[i] = (val * 200) / 10; | |
ea2d8a42 | 3981 | } |
94ca719e | 3982 | intel_dp->num_sink_rates = i; |
fc0f8e25 | 3983 | } |
0336400e VS |
3984 | |
3985 | intel_dp_print_rates(intel_dp); | |
3986 | ||
edb39244 AJ |
3987 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3988 | DP_DWN_STRM_PORT_PRESENT)) | |
3989 | return true; /* native DP sink */ | |
3990 | ||
3991 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3992 | return true; /* no per-port downstream info */ | |
3993 | ||
9d1a1031 JN |
3994 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3995 | intel_dp->downstream_ports, | |
3996 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3997 | return false; /* downstream port status fetch failed */ |
3998 | ||
3999 | return true; | |
92fd8fd1 KP |
4000 | } |
4001 | ||
0d198328 AJ |
4002 | static void |
4003 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
4004 | { | |
4005 | u8 buf[3]; | |
4006 | ||
4007 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
4008 | return; | |
4009 | ||
9d1a1031 | 4010 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
4011 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
4012 | buf[0], buf[1], buf[2]); | |
4013 | ||
9d1a1031 | 4014 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
4015 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
4016 | buf[0], buf[1], buf[2]); | |
4017 | } | |
4018 | ||
0e32b39c DA |
4019 | static bool |
4020 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
4021 | { | |
4022 | u8 buf[1]; | |
4023 | ||
4024 | if (!intel_dp->can_mst) | |
4025 | return false; | |
4026 | ||
4027 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
4028 | return false; | |
4029 | ||
0e32b39c DA |
4030 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
4031 | if (buf[0] & DP_MST_CAP) { | |
4032 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
4033 | intel_dp->is_mst = true; | |
4034 | } else { | |
4035 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
4036 | intel_dp->is_mst = false; | |
4037 | } | |
4038 | } | |
0e32b39c DA |
4039 | |
4040 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4041 | return intel_dp->is_mst; | |
4042 | } | |
4043 | ||
e5a1cab5 | 4044 | static int intel_dp_sink_crc_stop(struct intel_dp *intel_dp) |
d2e216d0 | 4045 | { |
082dcc7c RV |
4046 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
4047 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
ad9dc91b | 4048 | u8 buf; |
e5a1cab5 | 4049 | int ret = 0; |
d2e216d0 | 4050 | |
082dcc7c RV |
4051 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) { |
4052 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); | |
e5a1cab5 RV |
4053 | ret = -EIO; |
4054 | goto out; | |
4373f0f2 PZ |
4055 | } |
4056 | ||
082dcc7c | 4057 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
e5a1cab5 | 4058 | buf & ~DP_TEST_SINK_START) < 0) { |
082dcc7c | 4059 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); |
e5a1cab5 RV |
4060 | ret = -EIO; |
4061 | goto out; | |
4062 | } | |
d2e216d0 | 4063 | |
621d4c76 | 4064 | intel_dp->sink_crc.started = false; |
e5a1cab5 | 4065 | out: |
082dcc7c | 4066 | hsw_enable_ips(intel_crtc); |
e5a1cab5 | 4067 | return ret; |
082dcc7c RV |
4068 | } |
4069 | ||
4070 | static int intel_dp_sink_crc_start(struct intel_dp *intel_dp) | |
4071 | { | |
4072 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
4073 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
4074 | u8 buf; | |
e5a1cab5 RV |
4075 | int ret; |
4076 | ||
621d4c76 | 4077 | if (intel_dp->sink_crc.started) { |
e5a1cab5 RV |
4078 | ret = intel_dp_sink_crc_stop(intel_dp); |
4079 | if (ret) | |
4080 | return ret; | |
4081 | } | |
082dcc7c RV |
4082 | |
4083 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) | |
4084 | return -EIO; | |
4085 | ||
4086 | if (!(buf & DP_TEST_CRC_SUPPORTED)) | |
4087 | return -ENOTTY; | |
4088 | ||
621d4c76 RV |
4089 | intel_dp->sink_crc.last_count = buf & DP_TEST_COUNT_MASK; |
4090 | ||
082dcc7c RV |
4091 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
4092 | return -EIO; | |
4093 | ||
4094 | hsw_disable_ips(intel_crtc); | |
1dda5f93 | 4095 | |
9d1a1031 | 4096 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
082dcc7c RV |
4097 | buf | DP_TEST_SINK_START) < 0) { |
4098 | hsw_enable_ips(intel_crtc); | |
4099 | return -EIO; | |
4373f0f2 PZ |
4100 | } |
4101 | ||
621d4c76 | 4102 | intel_dp->sink_crc.started = true; |
082dcc7c RV |
4103 | return 0; |
4104 | } | |
4105 | ||
4106 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) | |
4107 | { | |
4108 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
4109 | struct drm_device *dev = dig_port->base.base.dev; | |
4110 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
4111 | u8 buf; | |
621d4c76 | 4112 | int count, ret; |
082dcc7c | 4113 | int attempts = 6; |
aabc95dc | 4114 | bool old_equal_new; |
082dcc7c RV |
4115 | |
4116 | ret = intel_dp_sink_crc_start(intel_dp); | |
4117 | if (ret) | |
4118 | return ret; | |
4119 | ||
ad9dc91b | 4120 | do { |
621d4c76 RV |
4121 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
4122 | ||
1dda5f93 | 4123 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
4373f0f2 PZ |
4124 | DP_TEST_SINK_MISC, &buf) < 0) { |
4125 | ret = -EIO; | |
afe0d67e | 4126 | goto stop; |
4373f0f2 | 4127 | } |
621d4c76 | 4128 | count = buf & DP_TEST_COUNT_MASK; |
aabc95dc | 4129 | |
621d4c76 RV |
4130 | /* |
4131 | * Count might be reset during the loop. In this case | |
4132 | * last known count needs to be reset as well. | |
4133 | */ | |
4134 | if (count == 0) | |
4135 | intel_dp->sink_crc.last_count = 0; | |
4136 | ||
4137 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) { | |
4138 | ret = -EIO; | |
4139 | goto stop; | |
4140 | } | |
aabc95dc RV |
4141 | |
4142 | old_equal_new = (count == intel_dp->sink_crc.last_count && | |
4143 | !memcmp(intel_dp->sink_crc.last_crc, crc, | |
4144 | 6 * sizeof(u8))); | |
4145 | ||
4146 | } while (--attempts && (count == 0 || old_equal_new)); | |
621d4c76 RV |
4147 | |
4148 | intel_dp->sink_crc.last_count = buf & DP_TEST_COUNT_MASK; | |
4149 | memcpy(intel_dp->sink_crc.last_crc, crc, 6 * sizeof(u8)); | |
ad9dc91b RV |
4150 | |
4151 | if (attempts == 0) { | |
aabc95dc RV |
4152 | if (old_equal_new) { |
4153 | DRM_DEBUG_KMS("Unreliable Sink CRC counter: Current returned CRC is identical to the previous one\n"); | |
4154 | } else { | |
4155 | DRM_ERROR("Panel is unable to calculate any CRC after 6 vblanks\n"); | |
4156 | ret = -ETIMEDOUT; | |
4157 | goto stop; | |
4158 | } | |
ad9dc91b | 4159 | } |
d2e216d0 | 4160 | |
afe0d67e | 4161 | stop: |
082dcc7c | 4162 | intel_dp_sink_crc_stop(intel_dp); |
4373f0f2 | 4163 | return ret; |
d2e216d0 RV |
4164 | } |
4165 | ||
a60f0e38 JB |
4166 | static bool |
4167 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4168 | { | |
9d1a1031 JN |
4169 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
4170 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4171 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
4172 | } |
4173 | ||
0e32b39c DA |
4174 | static bool |
4175 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4176 | { | |
4177 | int ret; | |
4178 | ||
4179 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
4180 | DP_SINK_COUNT_ESI, | |
4181 | sink_irq_vector, 14); | |
4182 | if (ret != 14) | |
4183 | return false; | |
4184 | ||
4185 | return true; | |
4186 | } | |
4187 | ||
c5d5ab7a TP |
4188 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
4189 | { | |
4190 | uint8_t test_result = DP_TEST_ACK; | |
4191 | return test_result; | |
4192 | } | |
4193 | ||
4194 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) | |
4195 | { | |
4196 | uint8_t test_result = DP_TEST_NAK; | |
4197 | return test_result; | |
4198 | } | |
4199 | ||
4200 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) | |
a60f0e38 | 4201 | { |
c5d5ab7a | 4202 | uint8_t test_result = DP_TEST_NAK; |
559be30c TP |
4203 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
4204 | struct drm_connector *connector = &intel_connector->base; | |
4205 | ||
4206 | if (intel_connector->detect_edid == NULL || | |
ac6f2e29 | 4207 | connector->edid_corrupt || |
559be30c TP |
4208 | intel_dp->aux.i2c_defer_count > 6) { |
4209 | /* Check EDID read for NACKs, DEFERs and corruption | |
4210 | * (DP CTS 1.2 Core r1.1) | |
4211 | * 4.2.2.4 : Failed EDID read, I2C_NAK | |
4212 | * 4.2.2.5 : Failed EDID read, I2C_DEFER | |
4213 | * 4.2.2.6 : EDID corruption detected | |
4214 | * Use failsafe mode for all cases | |
4215 | */ | |
4216 | if (intel_dp->aux.i2c_nack_count > 0 || | |
4217 | intel_dp->aux.i2c_defer_count > 0) | |
4218 | DRM_DEBUG_KMS("EDID read had %d NACKs, %d DEFERs\n", | |
4219 | intel_dp->aux.i2c_nack_count, | |
4220 | intel_dp->aux.i2c_defer_count); | |
4221 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; | |
4222 | } else { | |
f79b468e TS |
4223 | struct edid *block = intel_connector->detect_edid; |
4224 | ||
4225 | /* We have to write the checksum | |
4226 | * of the last block read | |
4227 | */ | |
4228 | block += intel_connector->detect_edid->extensions; | |
4229 | ||
559be30c TP |
4230 | if (!drm_dp_dpcd_write(&intel_dp->aux, |
4231 | DP_TEST_EDID_CHECKSUM, | |
f79b468e | 4232 | &block->checksum, |
5a1cc655 | 4233 | 1)) |
559be30c TP |
4234 | DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |
4235 | ||
4236 | test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE; | |
4237 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_STANDARD; | |
4238 | } | |
4239 | ||
4240 | /* Set test active flag here so userspace doesn't interrupt things */ | |
4241 | intel_dp->compliance_test_active = 1; | |
4242 | ||
c5d5ab7a TP |
4243 | return test_result; |
4244 | } | |
4245 | ||
4246 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) | |
a60f0e38 | 4247 | { |
c5d5ab7a TP |
4248 | uint8_t test_result = DP_TEST_NAK; |
4249 | return test_result; | |
4250 | } | |
4251 | ||
4252 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
4253 | { | |
4254 | uint8_t response = DP_TEST_NAK; | |
4255 | uint8_t rxdata = 0; | |
4256 | int status = 0; | |
4257 | ||
559be30c | 4258 | intel_dp->compliance_test_active = 0; |
c5d5ab7a | 4259 | intel_dp->compliance_test_type = 0; |
559be30c TP |
4260 | intel_dp->compliance_test_data = 0; |
4261 | ||
c5d5ab7a TP |
4262 | intel_dp->aux.i2c_nack_count = 0; |
4263 | intel_dp->aux.i2c_defer_count = 0; | |
4264 | ||
4265 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); | |
4266 | if (status <= 0) { | |
4267 | DRM_DEBUG_KMS("Could not read test request from sink\n"); | |
4268 | goto update_status; | |
4269 | } | |
4270 | ||
4271 | switch (rxdata) { | |
4272 | case DP_TEST_LINK_TRAINING: | |
4273 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); | |
4274 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; | |
4275 | response = intel_dp_autotest_link_training(intel_dp); | |
4276 | break; | |
4277 | case DP_TEST_LINK_VIDEO_PATTERN: | |
4278 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); | |
4279 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; | |
4280 | response = intel_dp_autotest_video_pattern(intel_dp); | |
4281 | break; | |
4282 | case DP_TEST_LINK_EDID_READ: | |
4283 | DRM_DEBUG_KMS("EDID test requested\n"); | |
4284 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; | |
4285 | response = intel_dp_autotest_edid(intel_dp); | |
4286 | break; | |
4287 | case DP_TEST_LINK_PHY_TEST_PATTERN: | |
4288 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); | |
4289 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; | |
4290 | response = intel_dp_autotest_phy_pattern(intel_dp); | |
4291 | break; | |
4292 | default: | |
4293 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); | |
4294 | break; | |
4295 | } | |
4296 | ||
4297 | update_status: | |
4298 | status = drm_dp_dpcd_write(&intel_dp->aux, | |
4299 | DP_TEST_RESPONSE, | |
4300 | &response, 1); | |
4301 | if (status <= 0) | |
4302 | DRM_DEBUG_KMS("Could not write test response to sink\n"); | |
a60f0e38 JB |
4303 | } |
4304 | ||
0e32b39c DA |
4305 | static int |
4306 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
4307 | { | |
4308 | bool bret; | |
4309 | ||
4310 | if (intel_dp->is_mst) { | |
4311 | u8 esi[16] = { 0 }; | |
4312 | int ret = 0; | |
4313 | int retry; | |
4314 | bool handled; | |
4315 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4316 | go_again: | |
4317 | if (bret == true) { | |
4318 | ||
4319 | /* check link status - esi[10] = 0x200c */ | |
90a6b7b0 | 4320 | if (intel_dp->active_mst_links && |
901c2daf | 4321 | !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { |
0e32b39c DA |
4322 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); |
4323 | intel_dp_start_link_train(intel_dp); | |
4324 | intel_dp_complete_link_train(intel_dp); | |
4325 | intel_dp_stop_link_train(intel_dp); | |
4326 | } | |
4327 | ||
6f34cc39 | 4328 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
4329 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
4330 | ||
4331 | if (handled) { | |
4332 | for (retry = 0; retry < 3; retry++) { | |
4333 | int wret; | |
4334 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
4335 | DP_SINK_COUNT_ESI+1, | |
4336 | &esi[1], 3); | |
4337 | if (wret == 3) { | |
4338 | break; | |
4339 | } | |
4340 | } | |
4341 | ||
4342 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4343 | if (bret == true) { | |
6f34cc39 | 4344 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
4345 | goto go_again; |
4346 | } | |
4347 | } else | |
4348 | ret = 0; | |
4349 | ||
4350 | return ret; | |
4351 | } else { | |
4352 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4353 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
4354 | intel_dp->is_mst = false; | |
4355 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4356 | /* send a hotplug event */ | |
4357 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
4358 | } | |
4359 | } | |
4360 | return -EINVAL; | |
4361 | } | |
4362 | ||
a4fc5ed6 KP |
4363 | /* |
4364 | * According to DP spec | |
4365 | * 5.1.2: | |
4366 | * 1. Read DPCD | |
4367 | * 2. Configure link according to Receiver Capabilities | |
4368 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4369 | * 4. Check link status on receipt of hot-plug interrupt | |
4370 | */ | |
a5146200 | 4371 | static void |
ea5b213a | 4372 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 4373 | { |
5b215bcf | 4374 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 4375 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 4376 | u8 sink_irq_vector; |
93f62dad | 4377 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 4378 | |
5b215bcf DA |
4379 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
4380 | ||
e02f9a06 | 4381 | if (!intel_encoder->base.crtc) |
a4fc5ed6 KP |
4382 | return; |
4383 | ||
1a125d8a ID |
4384 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
4385 | return; | |
4386 | ||
92fd8fd1 | 4387 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 4388 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
4389 | return; |
4390 | } | |
4391 | ||
92fd8fd1 | 4392 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 4393 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
4394 | return; |
4395 | } | |
4396 | ||
a60f0e38 JB |
4397 | /* Try to read the source of the interrupt */ |
4398 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4399 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4400 | /* Clear interrupt source */ | |
9d1a1031 JN |
4401 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4402 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4403 | sink_irq_vector); | |
a60f0e38 JB |
4404 | |
4405 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
09b1eb13 | 4406 | DRM_DEBUG_DRIVER("Test request in short pulse not handled\n"); |
a60f0e38 JB |
4407 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
4408 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4409 | } | |
4410 | ||
901c2daf | 4411 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4412 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4413 | intel_encoder->base.name); |
33a34e4e JB |
4414 | intel_dp_start_link_train(intel_dp); |
4415 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4416 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4417 | } |
a4fc5ed6 | 4418 | } |
a4fc5ed6 | 4419 | |
caf9ab24 | 4420 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4421 | static enum drm_connector_status |
26d61aad | 4422 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4423 | { |
caf9ab24 | 4424 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4425 | uint8_t type; |
4426 | ||
4427 | if (!intel_dp_get_dpcd(intel_dp)) | |
4428 | return connector_status_disconnected; | |
4429 | ||
4430 | /* if there's no downstream port, we're done */ | |
4431 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4432 | return connector_status_connected; |
caf9ab24 AJ |
4433 | |
4434 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4435 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4436 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4437 | uint8_t reg; |
9d1a1031 JN |
4438 | |
4439 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4440 | ®, 1) < 0) | |
caf9ab24 | 4441 | return connector_status_unknown; |
9d1a1031 | 4442 | |
23235177 AJ |
4443 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4444 | : connector_status_disconnected; | |
caf9ab24 AJ |
4445 | } |
4446 | ||
4447 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4448 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4449 | return connector_status_connected; |
caf9ab24 AJ |
4450 | |
4451 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4452 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4453 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4454 | if (type == DP_DS_PORT_TYPE_VGA || | |
4455 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4456 | return connector_status_unknown; | |
4457 | } else { | |
4458 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4459 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4460 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4461 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4462 | return connector_status_unknown; | |
4463 | } | |
caf9ab24 AJ |
4464 | |
4465 | /* Anything else is out of spec, warn and ignore */ | |
4466 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4467 | return connector_status_disconnected; |
71ba9000 AJ |
4468 | } |
4469 | ||
d410b56d CW |
4470 | static enum drm_connector_status |
4471 | edp_detect(struct intel_dp *intel_dp) | |
4472 | { | |
4473 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4474 | enum drm_connector_status status; | |
4475 | ||
4476 | status = intel_panel_detect(dev); | |
4477 | if (status == connector_status_unknown) | |
4478 | status = connector_status_connected; | |
4479 | ||
4480 | return status; | |
4481 | } | |
4482 | ||
b93433cc JN |
4483 | static bool ibx_digital_port_connected(struct drm_i915_private *dev_priv, |
4484 | struct intel_digital_port *port) | |
5eb08b69 | 4485 | { |
b93433cc | 4486 | u32 bit; |
01cb9ea6 | 4487 | |
0df53b77 JN |
4488 | switch (port->port) { |
4489 | case PORT_A: | |
4490 | return true; | |
4491 | case PORT_B: | |
4492 | bit = SDE_PORTB_HOTPLUG; | |
4493 | break; | |
4494 | case PORT_C: | |
4495 | bit = SDE_PORTC_HOTPLUG; | |
4496 | break; | |
4497 | case PORT_D: | |
4498 | bit = SDE_PORTD_HOTPLUG; | |
4499 | break; | |
4500 | default: | |
4501 | MISSING_CASE(port->port); | |
4502 | return false; | |
4503 | } | |
4504 | ||
4505 | return I915_READ(SDEISR) & bit; | |
4506 | } | |
4507 | ||
4508 | static bool cpt_digital_port_connected(struct drm_i915_private *dev_priv, | |
4509 | struct intel_digital_port *port) | |
4510 | { | |
4511 | u32 bit; | |
4512 | ||
4513 | switch (port->port) { | |
4514 | case PORT_A: | |
4515 | return true; | |
4516 | case PORT_B: | |
4517 | bit = SDE_PORTB_HOTPLUG_CPT; | |
4518 | break; | |
4519 | case PORT_C: | |
4520 | bit = SDE_PORTC_HOTPLUG_CPT; | |
4521 | break; | |
4522 | case PORT_D: | |
4523 | bit = SDE_PORTD_HOTPLUG_CPT; | |
4524 | break; | |
4525 | default: | |
4526 | MISSING_CASE(port->port); | |
4527 | return false; | |
b93433cc | 4528 | } |
1b469639 | 4529 | |
b93433cc | 4530 | return I915_READ(SDEISR) & bit; |
5eb08b69 ZW |
4531 | } |
4532 | ||
7e66bcf2 | 4533 | static bool g4x_digital_port_connected(struct drm_i915_private *dev_priv, |
1d245987 | 4534 | struct intel_digital_port *port) |
a4fc5ed6 | 4535 | { |
9642c81c | 4536 | u32 bit; |
5eb08b69 | 4537 | |
9642c81c JN |
4538 | switch (port->port) { |
4539 | case PORT_B: | |
4540 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4541 | break; | |
4542 | case PORT_C: | |
4543 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4544 | break; | |
4545 | case PORT_D: | |
4546 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4547 | break; | |
4548 | default: | |
4549 | MISSING_CASE(port->port); | |
4550 | return false; | |
4551 | } | |
4552 | ||
4553 | return I915_READ(PORT_HOTPLUG_STAT) & bit; | |
4554 | } | |
4555 | ||
4556 | static bool vlv_digital_port_connected(struct drm_i915_private *dev_priv, | |
4557 | struct intel_digital_port *port) | |
4558 | { | |
4559 | u32 bit; | |
4560 | ||
4561 | switch (port->port) { | |
4562 | case PORT_B: | |
4563 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4564 | break; | |
4565 | case PORT_C: | |
4566 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4567 | break; | |
4568 | case PORT_D: | |
4569 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4570 | break; | |
4571 | default: | |
4572 | MISSING_CASE(port->port); | |
4573 | return false; | |
a4fc5ed6 KP |
4574 | } |
4575 | ||
1d245987 | 4576 | return I915_READ(PORT_HOTPLUG_STAT) & bit; |
2a592bec DA |
4577 | } |
4578 | ||
e464bfde JN |
4579 | static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv, |
4580 | struct intel_digital_port *port) | |
4581 | { | |
4582 | u32 bit; | |
4583 | ||
4584 | switch (port->port) { | |
4585 | case PORT_A: | |
4586 | bit = BXT_DE_PORT_HP_DDIA; | |
4587 | break; | |
4588 | case PORT_B: | |
4589 | bit = BXT_DE_PORT_HP_DDIB; | |
4590 | break; | |
4591 | case PORT_C: | |
4592 | bit = BXT_DE_PORT_HP_DDIC; | |
4593 | break; | |
4594 | default: | |
4595 | MISSING_CASE(port->port); | |
4596 | return false; | |
4597 | } | |
4598 | ||
4599 | return I915_READ(GEN8_DE_PORT_ISR) & bit; | |
4600 | } | |
4601 | ||
7e66bcf2 JN |
4602 | /* |
4603 | * intel_digital_port_connected - is the specified port connected? | |
4604 | * @dev_priv: i915 private structure | |
4605 | * @port: the port to test | |
4606 | * | |
4607 | * Return %true if @port is connected, %false otherwise. | |
4608 | */ | |
4609 | static bool intel_digital_port_connected(struct drm_i915_private *dev_priv, | |
4610 | struct intel_digital_port *port) | |
4611 | { | |
0df53b77 | 4612 | if (HAS_PCH_IBX(dev_priv)) |
7e66bcf2 | 4613 | return ibx_digital_port_connected(dev_priv, port); |
0df53b77 JN |
4614 | if (HAS_PCH_SPLIT(dev_priv)) |
4615 | return cpt_digital_port_connected(dev_priv, port); | |
e464bfde JN |
4616 | else if (IS_BROXTON(dev_priv)) |
4617 | return bxt_digital_port_connected(dev_priv, port); | |
9642c81c JN |
4618 | else if (IS_VALLEYVIEW(dev_priv)) |
4619 | return vlv_digital_port_connected(dev_priv, port); | |
7e66bcf2 JN |
4620 | else |
4621 | return g4x_digital_port_connected(dev_priv, port); | |
4622 | } | |
4623 | ||
b93433cc JN |
4624 | static enum drm_connector_status |
4625 | ironlake_dp_detect(struct intel_dp *intel_dp) | |
4626 | { | |
4627 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4628 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4629 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4630 | ||
7e66bcf2 | 4631 | if (!intel_digital_port_connected(dev_priv, intel_dig_port)) |
b93433cc JN |
4632 | return connector_status_disconnected; |
4633 | ||
4634 | return intel_dp_detect_dpcd(intel_dp); | |
4635 | } | |
4636 | ||
2a592bec DA |
4637 | static enum drm_connector_status |
4638 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4639 | { | |
4640 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4641 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2a592bec DA |
4642 | |
4643 | /* Can't disconnect eDP, but you can close the lid... */ | |
4644 | if (is_edp(intel_dp)) { | |
4645 | enum drm_connector_status status; | |
4646 | ||
4647 | status = intel_panel_detect(dev); | |
4648 | if (status == connector_status_unknown) | |
4649 | status = connector_status_connected; | |
4650 | return status; | |
4651 | } | |
4652 | ||
7e66bcf2 | 4653 | if (!intel_digital_port_connected(dev->dev_private, intel_dig_port)) |
a4fc5ed6 KP |
4654 | return connector_status_disconnected; |
4655 | ||
26d61aad | 4656 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4657 | } |
4658 | ||
8c241fef | 4659 | static struct edid * |
beb60608 | 4660 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4661 | { |
beb60608 | 4662 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4663 | |
9cd300e0 JN |
4664 | /* use cached edid if we have one */ |
4665 | if (intel_connector->edid) { | |
9cd300e0 JN |
4666 | /* invalid edid */ |
4667 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4668 | return NULL; |
4669 | ||
55e9edeb | 4670 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4671 | } else |
4672 | return drm_get_edid(&intel_connector->base, | |
4673 | &intel_dp->aux.ddc); | |
4674 | } | |
8c241fef | 4675 | |
beb60608 CW |
4676 | static void |
4677 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4678 | { | |
4679 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4680 | struct edid *edid; | |
8c241fef | 4681 | |
beb60608 CW |
4682 | edid = intel_dp_get_edid(intel_dp); |
4683 | intel_connector->detect_edid = edid; | |
4684 | ||
4685 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4686 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4687 | else | |
4688 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4689 | } |
4690 | ||
beb60608 CW |
4691 | static void |
4692 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4693 | { |
beb60608 | 4694 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4695 | |
beb60608 CW |
4696 | kfree(intel_connector->detect_edid); |
4697 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4698 | |
beb60608 CW |
4699 | intel_dp->has_audio = false; |
4700 | } | |
d6f24d0f | 4701 | |
beb60608 CW |
4702 | static enum intel_display_power_domain |
4703 | intel_dp_power_get(struct intel_dp *dp) | |
4704 | { | |
4705 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4706 | enum intel_display_power_domain power_domain; | |
4707 | ||
4708 | power_domain = intel_display_port_power_domain(encoder); | |
4709 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4710 | ||
4711 | return power_domain; | |
4712 | } | |
d6f24d0f | 4713 | |
beb60608 CW |
4714 | static void |
4715 | intel_dp_power_put(struct intel_dp *dp, | |
4716 | enum intel_display_power_domain power_domain) | |
4717 | { | |
4718 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4719 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4720 | } |
4721 | ||
a9756bb5 ZW |
4722 | static enum drm_connector_status |
4723 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4724 | { | |
4725 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4726 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4727 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4728 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4729 | enum drm_connector_status status; |
671dedd2 | 4730 | enum intel_display_power_domain power_domain; |
0e32b39c | 4731 | bool ret; |
09b1eb13 | 4732 | u8 sink_irq_vector; |
a9756bb5 | 4733 | |
164c8598 | 4734 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4735 | connector->base.id, connector->name); |
beb60608 | 4736 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4737 | |
0e32b39c DA |
4738 | if (intel_dp->is_mst) { |
4739 | /* MST devices are disconnected from a monitor POV */ | |
4740 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4741 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4742 | return connector_status_disconnected; |
0e32b39c DA |
4743 | } |
4744 | ||
beb60608 | 4745 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4746 | |
d410b56d CW |
4747 | /* Can't disconnect eDP, but you can close the lid... */ |
4748 | if (is_edp(intel_dp)) | |
4749 | status = edp_detect(intel_dp); | |
4750 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4751 | status = ironlake_dp_detect(intel_dp); |
4752 | else | |
4753 | status = g4x_dp_detect(intel_dp); | |
4754 | if (status != connector_status_connected) | |
c8c8fb33 | 4755 | goto out; |
a9756bb5 | 4756 | |
0d198328 AJ |
4757 | intel_dp_probe_oui(intel_dp); |
4758 | ||
0e32b39c DA |
4759 | ret = intel_dp_probe_mst(intel_dp); |
4760 | if (ret) { | |
4761 | /* if we are in MST mode then this connector | |
4762 | won't appear connected or have anything with EDID on it */ | |
4763 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4764 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4765 | status = connector_status_disconnected; | |
4766 | goto out; | |
4767 | } | |
4768 | ||
beb60608 | 4769 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4770 | |
d63885da PZ |
4771 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4772 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4773 | status = connector_status_connected; |
4774 | ||
09b1eb13 TP |
4775 | /* Try to read the source of the interrupt */ |
4776 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4777 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4778 | /* Clear interrupt source */ | |
4779 | drm_dp_dpcd_writeb(&intel_dp->aux, | |
4780 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4781 | sink_irq_vector); | |
4782 | ||
4783 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4784 | intel_dp_handle_test_request(intel_dp); | |
4785 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4786 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4787 | } | |
4788 | ||
c8c8fb33 | 4789 | out: |
beb60608 | 4790 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4791 | return status; |
a4fc5ed6 KP |
4792 | } |
4793 | ||
beb60608 CW |
4794 | static void |
4795 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4796 | { |
df0e9248 | 4797 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4798 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4799 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4800 | |
beb60608 CW |
4801 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4802 | connector->base.id, connector->name); | |
4803 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4804 | |
beb60608 CW |
4805 | if (connector->status != connector_status_connected) |
4806 | return; | |
671dedd2 | 4807 | |
beb60608 CW |
4808 | power_domain = intel_dp_power_get(intel_dp); |
4809 | ||
4810 | intel_dp_set_edid(intel_dp); | |
4811 | ||
4812 | intel_dp_power_put(intel_dp, power_domain); | |
4813 | ||
4814 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4815 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4816 | } | |
4817 | ||
4818 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4819 | { | |
4820 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4821 | struct edid *edid; | |
4822 | ||
4823 | edid = intel_connector->detect_edid; | |
4824 | if (edid) { | |
4825 | int ret = intel_connector_update_modes(connector, edid); | |
4826 | if (ret) | |
4827 | return ret; | |
4828 | } | |
32f9d658 | 4829 | |
f8779fda | 4830 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4831 | if (is_edp(intel_attached_dp(connector)) && |
4832 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4833 | struct drm_display_mode *mode; |
beb60608 CW |
4834 | |
4835 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4836 | intel_connector->panel.fixed_mode); |
f8779fda | 4837 | if (mode) { |
32f9d658 ZW |
4838 | drm_mode_probed_add(connector, mode); |
4839 | return 1; | |
4840 | } | |
4841 | } | |
beb60608 | 4842 | |
32f9d658 | 4843 | return 0; |
a4fc5ed6 KP |
4844 | } |
4845 | ||
1aad7ac0 CW |
4846 | static bool |
4847 | intel_dp_detect_audio(struct drm_connector *connector) | |
4848 | { | |
1aad7ac0 | 4849 | bool has_audio = false; |
beb60608 | 4850 | struct edid *edid; |
1aad7ac0 | 4851 | |
beb60608 CW |
4852 | edid = to_intel_connector(connector)->detect_edid; |
4853 | if (edid) | |
1aad7ac0 | 4854 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4855 | |
1aad7ac0 CW |
4856 | return has_audio; |
4857 | } | |
4858 | ||
f684960e CW |
4859 | static int |
4860 | intel_dp_set_property(struct drm_connector *connector, | |
4861 | struct drm_property *property, | |
4862 | uint64_t val) | |
4863 | { | |
e953fd7b | 4864 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4865 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4866 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4867 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4868 | int ret; |
4869 | ||
662595df | 4870 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4871 | if (ret) |
4872 | return ret; | |
4873 | ||
3f43c48d | 4874 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4875 | int i = val; |
4876 | bool has_audio; | |
4877 | ||
4878 | if (i == intel_dp->force_audio) | |
f684960e CW |
4879 | return 0; |
4880 | ||
1aad7ac0 | 4881 | intel_dp->force_audio = i; |
f684960e | 4882 | |
c3e5f67b | 4883 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4884 | has_audio = intel_dp_detect_audio(connector); |
4885 | else | |
c3e5f67b | 4886 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4887 | |
4888 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4889 | return 0; |
4890 | ||
1aad7ac0 | 4891 | intel_dp->has_audio = has_audio; |
f684960e CW |
4892 | goto done; |
4893 | } | |
4894 | ||
e953fd7b | 4895 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 | 4896 | bool old_auto = intel_dp->color_range_auto; |
0f2a2a75 | 4897 | bool old_range = intel_dp->limited_color_range; |
ae4edb80 | 4898 | |
55bc60db VS |
4899 | switch (val) { |
4900 | case INTEL_BROADCAST_RGB_AUTO: | |
4901 | intel_dp->color_range_auto = true; | |
4902 | break; | |
4903 | case INTEL_BROADCAST_RGB_FULL: | |
4904 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4905 | intel_dp->limited_color_range = false; |
55bc60db VS |
4906 | break; |
4907 | case INTEL_BROADCAST_RGB_LIMITED: | |
4908 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4909 | intel_dp->limited_color_range = true; |
55bc60db VS |
4910 | break; |
4911 | default: | |
4912 | return -EINVAL; | |
4913 | } | |
ae4edb80 DV |
4914 | |
4915 | if (old_auto == intel_dp->color_range_auto && | |
0f2a2a75 | 4916 | old_range == intel_dp->limited_color_range) |
ae4edb80 DV |
4917 | return 0; |
4918 | ||
e953fd7b CW |
4919 | goto done; |
4920 | } | |
4921 | ||
53b41837 YN |
4922 | if (is_edp(intel_dp) && |
4923 | property == connector->dev->mode_config.scaling_mode_property) { | |
4924 | if (val == DRM_MODE_SCALE_NONE) { | |
4925 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4926 | return -EINVAL; | |
4927 | } | |
4928 | ||
4929 | if (intel_connector->panel.fitting_mode == val) { | |
4930 | /* the eDP scaling property is not changed */ | |
4931 | return 0; | |
4932 | } | |
4933 | intel_connector->panel.fitting_mode = val; | |
4934 | ||
4935 | goto done; | |
4936 | } | |
4937 | ||
f684960e CW |
4938 | return -EINVAL; |
4939 | ||
4940 | done: | |
c0c36b94 CW |
4941 | if (intel_encoder->base.crtc) |
4942 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4943 | |
4944 | return 0; | |
4945 | } | |
4946 | ||
a4fc5ed6 | 4947 | static void |
73845adf | 4948 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4949 | { |
1d508706 | 4950 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4951 | |
10e972d3 | 4952 | kfree(intel_connector->detect_edid); |
beb60608 | 4953 | |
9cd300e0 JN |
4954 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4955 | kfree(intel_connector->edid); | |
4956 | ||
acd8db10 PZ |
4957 | /* Can't call is_edp() since the encoder may have been destroyed |
4958 | * already. */ | |
4959 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4960 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4961 | |
a4fc5ed6 | 4962 | drm_connector_cleanup(connector); |
55f78c43 | 4963 | kfree(connector); |
a4fc5ed6 KP |
4964 | } |
4965 | ||
00c09d70 | 4966 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4967 | { |
da63a9f2 PZ |
4968 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4969 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4970 | |
4f71d0cb | 4971 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4972 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4973 | if (is_edp(intel_dp)) { |
4974 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4975 | /* |
4976 | * vdd might still be enabled do to the delayed vdd off. | |
4977 | * Make sure vdd is actually turned off here. | |
4978 | */ | |
773538e8 | 4979 | pps_lock(intel_dp); |
4be73780 | 4980 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4981 | pps_unlock(intel_dp); |
4982 | ||
01527b31 CT |
4983 | if (intel_dp->edp_notifier.notifier_call) { |
4984 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4985 | intel_dp->edp_notifier.notifier_call = NULL; | |
4986 | } | |
bd943159 | 4987 | } |
c8bd0e49 | 4988 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4989 | kfree(intel_dig_port); |
24d05927 DV |
4990 | } |
4991 | ||
07f9cd0b ID |
4992 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4993 | { | |
4994 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4995 | ||
4996 | if (!is_edp(intel_dp)) | |
4997 | return; | |
4998 | ||
951468f3 VS |
4999 | /* |
5000 | * vdd might still be enabled do to the delayed vdd off. | |
5001 | * Make sure vdd is actually turned off here. | |
5002 | */ | |
afa4e53a | 5003 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 5004 | pps_lock(intel_dp); |
07f9cd0b | 5005 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5006 | pps_unlock(intel_dp); |
07f9cd0b ID |
5007 | } |
5008 | ||
49e6bc51 VS |
5009 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
5010 | { | |
5011 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5012 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
5013 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5014 | enum intel_display_power_domain power_domain; | |
5015 | ||
5016 | lockdep_assert_held(&dev_priv->pps_mutex); | |
5017 | ||
5018 | if (!edp_have_panel_vdd(intel_dp)) | |
5019 | return; | |
5020 | ||
5021 | /* | |
5022 | * The VDD bit needs a power domain reference, so if the bit is | |
5023 | * already enabled when we boot or resume, grab this reference and | |
5024 | * schedule a vdd off, so we don't hold on to the reference | |
5025 | * indefinitely. | |
5026 | */ | |
5027 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
5028 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
5029 | intel_display_power_get(dev_priv, power_domain); | |
5030 | ||
5031 | edp_panel_vdd_schedule_off(intel_dp); | |
5032 | } | |
5033 | ||
6d93c0c4 ID |
5034 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
5035 | { | |
49e6bc51 VS |
5036 | struct intel_dp *intel_dp; |
5037 | ||
5038 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
5039 | return; | |
5040 | ||
5041 | intel_dp = enc_to_intel_dp(encoder); | |
5042 | ||
5043 | pps_lock(intel_dp); | |
5044 | ||
5045 | /* | |
5046 | * Read out the current power sequencer assignment, | |
5047 | * in case the BIOS did something with it. | |
5048 | */ | |
5049 | if (IS_VALLEYVIEW(encoder->dev)) | |
5050 | vlv_initial_power_sequencer_setup(intel_dp); | |
5051 | ||
5052 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5053 | ||
5054 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
5055 | } |
5056 | ||
a4fc5ed6 | 5057 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
4d688a2a | 5058 | .dpms = drm_atomic_helper_connector_dpms, |
a4fc5ed6 | 5059 | .detect = intel_dp_detect, |
beb60608 | 5060 | .force = intel_dp_force, |
a4fc5ed6 | 5061 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 5062 | .set_property = intel_dp_set_property, |
2545e4a6 | 5063 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 5064 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 5065 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 5066 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
a4fc5ed6 KP |
5067 | }; |
5068 | ||
5069 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
5070 | .get_modes = intel_dp_get_modes, | |
5071 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 5072 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
5073 | }; |
5074 | ||
a4fc5ed6 | 5075 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 5076 | .reset = intel_dp_encoder_reset, |
24d05927 | 5077 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
5078 | }; |
5079 | ||
b2c5c181 | 5080 | enum irqreturn |
13cf5504 DA |
5081 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
5082 | { | |
5083 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 5084 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
5085 | struct drm_device *dev = intel_dig_port->base.base.dev; |
5086 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 5087 | enum intel_display_power_domain power_domain; |
b2c5c181 | 5088 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 5089 | |
0e32b39c DA |
5090 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
5091 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 5092 | |
7a7f84cc VS |
5093 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
5094 | /* | |
5095 | * vdd off can generate a long pulse on eDP which | |
5096 | * would require vdd on to handle it, and thus we | |
5097 | * would end up in an endless cycle of | |
5098 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
5099 | */ | |
5100 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
5101 | port_name(intel_dig_port->port)); | |
a8b3d52f | 5102 | return IRQ_HANDLED; |
7a7f84cc VS |
5103 | } |
5104 | ||
26fbb774 VS |
5105 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
5106 | port_name(intel_dig_port->port), | |
0e32b39c | 5107 | long_hpd ? "long" : "short"); |
13cf5504 | 5108 | |
1c767b33 ID |
5109 | power_domain = intel_display_port_power_domain(intel_encoder); |
5110 | intel_display_power_get(dev_priv, power_domain); | |
5111 | ||
0e32b39c | 5112 | if (long_hpd) { |
5fa836a9 MK |
5113 | /* indicate that we need to restart link training */ |
5114 | intel_dp->train_set_valid = false; | |
2a592bec | 5115 | |
7e66bcf2 JN |
5116 | if (!intel_digital_port_connected(dev_priv, intel_dig_port)) |
5117 | goto mst_fail; | |
0e32b39c DA |
5118 | |
5119 | if (!intel_dp_get_dpcd(intel_dp)) { | |
5120 | goto mst_fail; | |
5121 | } | |
5122 | ||
5123 | intel_dp_probe_oui(intel_dp); | |
5124 | ||
5125 | if (!intel_dp_probe_mst(intel_dp)) | |
5126 | goto mst_fail; | |
5127 | ||
5128 | } else { | |
5129 | if (intel_dp->is_mst) { | |
1c767b33 | 5130 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
5131 | goto mst_fail; |
5132 | } | |
5133 | ||
5134 | if (!intel_dp->is_mst) { | |
5135 | /* | |
5136 | * we'll check the link status via the normal hot plug path later - | |
5137 | * but for short hpds we should check it now | |
5138 | */ | |
5b215bcf | 5139 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 5140 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 5141 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
5142 | } |
5143 | } | |
b2c5c181 DV |
5144 | |
5145 | ret = IRQ_HANDLED; | |
5146 | ||
1c767b33 | 5147 | goto put_power; |
0e32b39c DA |
5148 | mst_fail: |
5149 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
5150 | if (intel_dp->is_mst) { | |
5151 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
5152 | intel_dp->is_mst = false; | |
5153 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
5154 | } | |
1c767b33 ID |
5155 | put_power: |
5156 | intel_display_power_put(dev_priv, power_domain); | |
5157 | ||
5158 | return ret; | |
13cf5504 DA |
5159 | } |
5160 | ||
e3421a18 ZW |
5161 | /* Return which DP Port should be selected for Transcoder DP control */ |
5162 | int | |
0206e353 | 5163 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
5164 | { |
5165 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
5166 | struct intel_encoder *intel_encoder; |
5167 | struct intel_dp *intel_dp; | |
e3421a18 | 5168 | |
fa90ecef PZ |
5169 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
5170 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 5171 | |
fa90ecef PZ |
5172 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
5173 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 5174 | return intel_dp->output_reg; |
e3421a18 | 5175 | } |
ea5b213a | 5176 | |
e3421a18 ZW |
5177 | return -1; |
5178 | } | |
5179 | ||
36e83a18 | 5180 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 5181 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
5182 | { |
5183 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 5184 | union child_device_config *p_child; |
36e83a18 | 5185 | int i; |
5d8a7752 VS |
5186 | static const short port_mapping[] = { |
5187 | [PORT_B] = PORT_IDPB, | |
5188 | [PORT_C] = PORT_IDPC, | |
5189 | [PORT_D] = PORT_IDPD, | |
5190 | }; | |
36e83a18 | 5191 | |
3b32a35b VS |
5192 | if (port == PORT_A) |
5193 | return true; | |
5194 | ||
41aa3448 | 5195 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
5196 | return false; |
5197 | ||
41aa3448 RV |
5198 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
5199 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 5200 | |
5d8a7752 | 5201 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
5202 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
5203 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
5204 | return true; |
5205 | } | |
5206 | return false; | |
5207 | } | |
5208 | ||
0e32b39c | 5209 | void |
f684960e CW |
5210 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
5211 | { | |
53b41837 YN |
5212 | struct intel_connector *intel_connector = to_intel_connector(connector); |
5213 | ||
3f43c48d | 5214 | intel_attach_force_audio_property(connector); |
e953fd7b | 5215 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 5216 | intel_dp->color_range_auto = true; |
53b41837 YN |
5217 | |
5218 | if (is_edp(intel_dp)) { | |
5219 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
5220 | drm_object_attach_property( |
5221 | &connector->base, | |
53b41837 | 5222 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
5223 | DRM_MODE_SCALE_ASPECT); |
5224 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 5225 | } |
f684960e CW |
5226 | } |
5227 | ||
dada1a9f ID |
5228 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
5229 | { | |
5230 | intel_dp->last_power_cycle = jiffies; | |
5231 | intel_dp->last_power_on = jiffies; | |
5232 | intel_dp->last_backlight_off = jiffies; | |
5233 | } | |
5234 | ||
67a54566 DV |
5235 | static void |
5236 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 5237 | struct intel_dp *intel_dp) |
67a54566 DV |
5238 | { |
5239 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
5240 | struct edp_power_seq cur, vbt, spec, |
5241 | *final = &intel_dp->pps_delays; | |
b0a08bec VK |
5242 | u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; |
5243 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg = 0; | |
453c5420 | 5244 | |
e39b999a VS |
5245 | lockdep_assert_held(&dev_priv->pps_mutex); |
5246 | ||
81ddbc69 VS |
5247 | /* already initialized? */ |
5248 | if (final->t11_t12 != 0) | |
5249 | return; | |
5250 | ||
b0a08bec VK |
5251 | if (IS_BROXTON(dev)) { |
5252 | /* | |
5253 | * TODO: BXT has 2 sets of PPS registers. | |
5254 | * Correct Register for Broxton need to be identified | |
5255 | * using VBT. hardcoding for now | |
5256 | */ | |
5257 | pp_ctrl_reg = BXT_PP_CONTROL(0); | |
5258 | pp_on_reg = BXT_PP_ON_DELAYS(0); | |
5259 | pp_off_reg = BXT_PP_OFF_DELAYS(0); | |
5260 | } else if (HAS_PCH_SPLIT(dev)) { | |
bf13e81b | 5261 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
5262 | pp_on_reg = PCH_PP_ON_DELAYS; |
5263 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5264 | pp_div_reg = PCH_PP_DIVISOR; | |
5265 | } else { | |
bf13e81b JN |
5266 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5267 | ||
5268 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
5269 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5270 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5271 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 5272 | } |
67a54566 DV |
5273 | |
5274 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
5275 | * the very first thing. */ | |
b0a08bec | 5276 | pp_ctl = ironlake_get_pp_control(intel_dp); |
67a54566 | 5277 | |
453c5420 JB |
5278 | pp_on = I915_READ(pp_on_reg); |
5279 | pp_off = I915_READ(pp_off_reg); | |
b0a08bec VK |
5280 | if (!IS_BROXTON(dev)) { |
5281 | I915_WRITE(pp_ctrl_reg, pp_ctl); | |
5282 | pp_div = I915_READ(pp_div_reg); | |
5283 | } | |
67a54566 DV |
5284 | |
5285 | /* Pull timing values out of registers */ | |
5286 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
5287 | PANEL_POWER_UP_DELAY_SHIFT; | |
5288 | ||
5289 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
5290 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
5291 | ||
5292 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
5293 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
5294 | ||
5295 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
5296 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
5297 | ||
b0a08bec VK |
5298 | if (IS_BROXTON(dev)) { |
5299 | u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> | |
5300 | BXT_POWER_CYCLE_DELAY_SHIFT; | |
5301 | if (tmp > 0) | |
5302 | cur.t11_t12 = (tmp - 1) * 1000; | |
5303 | else | |
5304 | cur.t11_t12 = 0; | |
5305 | } else { | |
5306 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
67a54566 | 5307 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; |
b0a08bec | 5308 | } |
67a54566 DV |
5309 | |
5310 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5311 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
5312 | ||
41aa3448 | 5313 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
5314 | |
5315 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
5316 | * our hw here, which are all in 100usec. */ | |
5317 | spec.t1_t3 = 210 * 10; | |
5318 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
5319 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
5320 | spec.t10 = 500 * 10; | |
5321 | /* This one is special and actually in units of 100ms, but zero | |
5322 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
5323 | * table multiplies it with 1000 to make it in units of 100usec, | |
5324 | * too. */ | |
5325 | spec.t11_t12 = (510 + 100) * 10; | |
5326 | ||
5327 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5328 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
5329 | ||
5330 | /* Use the max of the register settings and vbt. If both are | |
5331 | * unset, fall back to the spec limits. */ | |
36b5f425 | 5332 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
5333 | spec.field : \ |
5334 | max(cur.field, vbt.field)) | |
5335 | assign_final(t1_t3); | |
5336 | assign_final(t8); | |
5337 | assign_final(t9); | |
5338 | assign_final(t10); | |
5339 | assign_final(t11_t12); | |
5340 | #undef assign_final | |
5341 | ||
36b5f425 | 5342 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
5343 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5344 | intel_dp->backlight_on_delay = get_delay(t8); | |
5345 | intel_dp->backlight_off_delay = get_delay(t9); | |
5346 | intel_dp->panel_power_down_delay = get_delay(t10); | |
5347 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
5348 | #undef get_delay | |
5349 | ||
f30d26e4 JN |
5350 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
5351 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
5352 | intel_dp->panel_power_cycle_delay); | |
5353 | ||
5354 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
5355 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
5356 | } |
5357 | ||
5358 | static void | |
5359 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 5360 | struct intel_dp *intel_dp) |
f30d26e4 JN |
5361 | { |
5362 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
5363 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
5364 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
b0a08bec | 5365 | int pp_on_reg, pp_off_reg, pp_div_reg = 0, pp_ctrl_reg; |
ad933b56 | 5366 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 5367 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 5368 | |
e39b999a | 5369 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 | 5370 | |
b0a08bec VK |
5371 | if (IS_BROXTON(dev)) { |
5372 | /* | |
5373 | * TODO: BXT has 2 sets of PPS registers. | |
5374 | * Correct Register for Broxton need to be identified | |
5375 | * using VBT. hardcoding for now | |
5376 | */ | |
5377 | pp_ctrl_reg = BXT_PP_CONTROL(0); | |
5378 | pp_on_reg = BXT_PP_ON_DELAYS(0); | |
5379 | pp_off_reg = BXT_PP_OFF_DELAYS(0); | |
5380 | ||
5381 | } else if (HAS_PCH_SPLIT(dev)) { | |
453c5420 JB |
5382 | pp_on_reg = PCH_PP_ON_DELAYS; |
5383 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5384 | pp_div_reg = PCH_PP_DIVISOR; | |
5385 | } else { | |
bf13e81b JN |
5386 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5387 | ||
5388 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5389 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5390 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
5391 | } |
5392 | ||
b2f19d1a PZ |
5393 | /* |
5394 | * And finally store the new values in the power sequencer. The | |
5395 | * backlight delays are set to 1 because we do manual waits on them. For | |
5396 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
5397 | * we'll end up waiting for the backlight off delay twice: once when we | |
5398 | * do the manual sleep, and once when we disable the panel and wait for | |
5399 | * the PP_STATUS bit to become zero. | |
5400 | */ | |
f30d26e4 | 5401 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
5402 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5403 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 5404 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
5405 | /* Compute the divisor for the pp clock, simply match the Bspec |
5406 | * formula. */ | |
b0a08bec VK |
5407 | if (IS_BROXTON(dev)) { |
5408 | pp_div = I915_READ(pp_ctrl_reg); | |
5409 | pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; | |
5410 | pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) | |
5411 | << BXT_POWER_CYCLE_DELAY_SHIFT); | |
5412 | } else { | |
5413 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; | |
5414 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) | |
5415 | << PANEL_POWER_CYCLE_DELAY_SHIFT); | |
5416 | } | |
67a54566 DV |
5417 | |
5418 | /* Haswell doesn't have any port selection bits for the panel | |
5419 | * power sequencer any more. */ | |
bc7d38a4 | 5420 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 5421 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 5422 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 5423 | if (port == PORT_A) |
a24c144c | 5424 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 5425 | else |
a24c144c | 5426 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
5427 | } |
5428 | ||
453c5420 JB |
5429 | pp_on |= port_sel; |
5430 | ||
5431 | I915_WRITE(pp_on_reg, pp_on); | |
5432 | I915_WRITE(pp_off_reg, pp_off); | |
b0a08bec VK |
5433 | if (IS_BROXTON(dev)) |
5434 | I915_WRITE(pp_ctrl_reg, pp_div); | |
5435 | else | |
5436 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 5437 | |
67a54566 | 5438 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
5439 | I915_READ(pp_on_reg), |
5440 | I915_READ(pp_off_reg), | |
b0a08bec VK |
5441 | IS_BROXTON(dev) ? |
5442 | (I915_READ(pp_ctrl_reg) & BXT_POWER_CYCLE_DELAY_MASK) : | |
453c5420 | 5443 | I915_READ(pp_div_reg)); |
f684960e CW |
5444 | } |
5445 | ||
b33a2815 VK |
5446 | /** |
5447 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
5448 | * @dev: DRM device | |
5449 | * @refresh_rate: RR to be programmed | |
5450 | * | |
5451 | * This function gets called when refresh rate (RR) has to be changed from | |
5452 | * one frequency to another. Switches can be between high and low RR | |
5453 | * supported by the panel or to any other RR based on media playback (in | |
5454 | * this case, RR value needs to be passed from user space). | |
5455 | * | |
5456 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
5457 | */ | |
96178eeb | 5458 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
5459 | { |
5460 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5461 | struct intel_encoder *encoder; | |
96178eeb VK |
5462 | struct intel_digital_port *dig_port = NULL; |
5463 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 5464 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 5465 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 5466 | u32 reg, val; |
96178eeb | 5467 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
5468 | |
5469 | if (refresh_rate <= 0) { | |
5470 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
5471 | return; | |
5472 | } | |
5473 | ||
96178eeb VK |
5474 | if (intel_dp == NULL) { |
5475 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
5476 | return; |
5477 | } | |
5478 | ||
1fcc9d1c | 5479 | /* |
e4d59f6b RV |
5480 | * FIXME: This needs proper synchronization with psr state for some |
5481 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 5482 | */ |
439d7ac0 | 5483 | |
96178eeb VK |
5484 | dig_port = dp_to_dig_port(intel_dp); |
5485 | encoder = &dig_port->base; | |
723f9aab | 5486 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
439d7ac0 PB |
5487 | |
5488 | if (!intel_crtc) { | |
5489 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
5490 | return; | |
5491 | } | |
5492 | ||
6e3c9717 | 5493 | config = intel_crtc->config; |
439d7ac0 | 5494 | |
96178eeb | 5495 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
5496 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5497 | return; | |
5498 | } | |
5499 | ||
96178eeb VK |
5500 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5501 | refresh_rate) | |
439d7ac0 PB |
5502 | index = DRRS_LOW_RR; |
5503 | ||
96178eeb | 5504 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
5505 | DRM_DEBUG_KMS( |
5506 | "DRRS requested for previously set RR...ignoring\n"); | |
5507 | return; | |
5508 | } | |
5509 | ||
5510 | if (!intel_crtc->active) { | |
5511 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
5512 | return; | |
5513 | } | |
5514 | ||
44395bfe | 5515 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
5516 | switch (index) { |
5517 | case DRRS_HIGH_RR: | |
5518 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
5519 | break; | |
5520 | case DRRS_LOW_RR: | |
5521 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
5522 | break; | |
5523 | case DRRS_MAX_RR: | |
5524 | default: | |
5525 | DRM_ERROR("Unsupported refreshrate type\n"); | |
5526 | } | |
5527 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 5528 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 5529 | val = I915_READ(reg); |
a4c30b1d | 5530 | |
439d7ac0 | 5531 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
5532 | if (IS_VALLEYVIEW(dev)) |
5533 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5534 | else | |
5535 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 5536 | } else { |
6fa7aec1 VK |
5537 | if (IS_VALLEYVIEW(dev)) |
5538 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5539 | else | |
5540 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5541 | } |
5542 | I915_WRITE(reg, val); | |
5543 | } | |
5544 | ||
4e9ac947 VK |
5545 | dev_priv->drrs.refresh_rate_type = index; |
5546 | ||
5547 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5548 | } | |
5549 | ||
b33a2815 VK |
5550 | /** |
5551 | * intel_edp_drrs_enable - init drrs struct if supported | |
5552 | * @intel_dp: DP struct | |
5553 | * | |
5554 | * Initializes frontbuffer_bits and drrs.dp | |
5555 | */ | |
c395578e VK |
5556 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5557 | { | |
5558 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5559 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5560 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5561 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5562 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5563 | ||
5564 | if (!intel_crtc->config->has_drrs) { | |
5565 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5566 | return; | |
5567 | } | |
5568 | ||
5569 | mutex_lock(&dev_priv->drrs.mutex); | |
5570 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5571 | DRM_ERROR("DRRS already enabled\n"); | |
5572 | goto unlock; | |
5573 | } | |
5574 | ||
5575 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5576 | ||
5577 | dev_priv->drrs.dp = intel_dp; | |
5578 | ||
5579 | unlock: | |
5580 | mutex_unlock(&dev_priv->drrs.mutex); | |
5581 | } | |
5582 | ||
b33a2815 VK |
5583 | /** |
5584 | * intel_edp_drrs_disable - Disable DRRS | |
5585 | * @intel_dp: DP struct | |
5586 | * | |
5587 | */ | |
c395578e VK |
5588 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5589 | { | |
5590 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5591 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5592 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5593 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5594 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5595 | ||
5596 | if (!intel_crtc->config->has_drrs) | |
5597 | return; | |
5598 | ||
5599 | mutex_lock(&dev_priv->drrs.mutex); | |
5600 | if (!dev_priv->drrs.dp) { | |
5601 | mutex_unlock(&dev_priv->drrs.mutex); | |
5602 | return; | |
5603 | } | |
5604 | ||
5605 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5606 | intel_dp_set_drrs_state(dev_priv->dev, | |
5607 | intel_dp->attached_connector->panel. | |
5608 | fixed_mode->vrefresh); | |
5609 | ||
5610 | dev_priv->drrs.dp = NULL; | |
5611 | mutex_unlock(&dev_priv->drrs.mutex); | |
5612 | ||
5613 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5614 | } | |
5615 | ||
4e9ac947 VK |
5616 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5617 | { | |
5618 | struct drm_i915_private *dev_priv = | |
5619 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5620 | struct intel_dp *intel_dp; | |
5621 | ||
5622 | mutex_lock(&dev_priv->drrs.mutex); | |
5623 | ||
5624 | intel_dp = dev_priv->drrs.dp; | |
5625 | ||
5626 | if (!intel_dp) | |
5627 | goto unlock; | |
5628 | ||
439d7ac0 | 5629 | /* |
4e9ac947 VK |
5630 | * The delayed work can race with an invalidate hence we need to |
5631 | * recheck. | |
439d7ac0 PB |
5632 | */ |
5633 | ||
4e9ac947 VK |
5634 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5635 | goto unlock; | |
439d7ac0 | 5636 | |
4e9ac947 VK |
5637 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5638 | intel_dp_set_drrs_state(dev_priv->dev, | |
5639 | intel_dp->attached_connector->panel. | |
5640 | downclock_mode->vrefresh); | |
439d7ac0 | 5641 | |
4e9ac947 | 5642 | unlock: |
4e9ac947 | 5643 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5644 | } |
5645 | ||
b33a2815 | 5646 | /** |
0ddfd203 | 5647 | * intel_edp_drrs_invalidate - Disable Idleness DRRS |
b33a2815 VK |
5648 | * @dev: DRM device |
5649 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5650 | * | |
0ddfd203 R |
5651 | * This function gets called everytime rendering on the given planes start. |
5652 | * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR). | |
b33a2815 VK |
5653 | * |
5654 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5655 | */ | |
a93fad0f VK |
5656 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5657 | unsigned frontbuffer_bits) | |
5658 | { | |
5659 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5660 | struct drm_crtc *crtc; | |
5661 | enum pipe pipe; | |
5662 | ||
9da7d693 | 5663 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5664 | return; |
5665 | ||
88f933a8 | 5666 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5667 | |
a93fad0f | 5668 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5669 | if (!dev_priv->drrs.dp) { |
5670 | mutex_unlock(&dev_priv->drrs.mutex); | |
5671 | return; | |
5672 | } | |
5673 | ||
a93fad0f VK |
5674 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5675 | pipe = to_intel_crtc(crtc)->pipe; | |
5676 | ||
c1d038c6 DV |
5677 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
5678 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5679 | ||
0ddfd203 | 5680 | /* invalidate means busy screen hence upclock */ |
c1d038c6 | 5681 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
a93fad0f VK |
5682 | intel_dp_set_drrs_state(dev_priv->dev, |
5683 | dev_priv->drrs.dp->attached_connector->panel. | |
5684 | fixed_mode->vrefresh); | |
a93fad0f | 5685 | |
a93fad0f VK |
5686 | mutex_unlock(&dev_priv->drrs.mutex); |
5687 | } | |
5688 | ||
b33a2815 | 5689 | /** |
0ddfd203 | 5690 | * intel_edp_drrs_flush - Restart Idleness DRRS |
b33a2815 VK |
5691 | * @dev: DRM device |
5692 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5693 | * | |
0ddfd203 R |
5694 | * This function gets called every time rendering on the given planes has |
5695 | * completed or flip on a crtc is completed. So DRRS should be upclocked | |
5696 | * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again, | |
5697 | * if no other planes are dirty. | |
b33a2815 VK |
5698 | * |
5699 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5700 | */ | |
a93fad0f VK |
5701 | void intel_edp_drrs_flush(struct drm_device *dev, |
5702 | unsigned frontbuffer_bits) | |
5703 | { | |
5704 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5705 | struct drm_crtc *crtc; | |
5706 | enum pipe pipe; | |
5707 | ||
9da7d693 | 5708 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5709 | return; |
5710 | ||
88f933a8 | 5711 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5712 | |
a93fad0f | 5713 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5714 | if (!dev_priv->drrs.dp) { |
5715 | mutex_unlock(&dev_priv->drrs.mutex); | |
5716 | return; | |
5717 | } | |
5718 | ||
a93fad0f VK |
5719 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5720 | pipe = to_intel_crtc(crtc)->pipe; | |
c1d038c6 DV |
5721 | |
5722 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
a93fad0f VK |
5723 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; |
5724 | ||
0ddfd203 | 5725 | /* flush means busy screen hence upclock */ |
c1d038c6 | 5726 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
0ddfd203 R |
5727 | intel_dp_set_drrs_state(dev_priv->dev, |
5728 | dev_priv->drrs.dp->attached_connector->panel. | |
5729 | fixed_mode->vrefresh); | |
5730 | ||
5731 | /* | |
5732 | * flush also means no more activity hence schedule downclock, if all | |
5733 | * other fbs are quiescent too | |
5734 | */ | |
5735 | if (!dev_priv->drrs.busy_frontbuffer_bits) | |
a93fad0f VK |
5736 | schedule_delayed_work(&dev_priv->drrs.work, |
5737 | msecs_to_jiffies(1000)); | |
5738 | mutex_unlock(&dev_priv->drrs.mutex); | |
5739 | } | |
5740 | ||
b33a2815 VK |
5741 | /** |
5742 | * DOC: Display Refresh Rate Switching (DRRS) | |
5743 | * | |
5744 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5745 | * which enables swtching between low and high refresh rates, | |
5746 | * dynamically, based on the usage scenario. This feature is applicable | |
5747 | * for internal panels. | |
5748 | * | |
5749 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5750 | * would list multiple refresh rates for one resolution. | |
5751 | * | |
5752 | * DRRS is of 2 types - static and seamless. | |
5753 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5754 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5755 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5756 | * and can be used during normal system usage. This is done by programming | |
5757 | * certain registers. | |
5758 | * | |
5759 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5760 | * inputs from the panel spec. | |
5761 | * | |
5762 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5763 | * | |
5764 | * eDP DRRS:- | |
5765 | * The implementation is based on frontbuffer tracking implementation. | |
5766 | * When there is a disturbance on the screen triggered by user activity or a | |
5767 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5768 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5769 | * to low RR is made. | |
5770 | * For integration with frontbuffer tracking code, | |
5771 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5772 | * | |
5773 | * DRRS can be further extended to support other internal panels and also | |
5774 | * the scenario of video playback wherein RR is set based on the rate | |
5775 | * requested by userspace. | |
5776 | */ | |
5777 | ||
5778 | /** | |
5779 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5780 | * @intel_connector: eDP connector | |
5781 | * @fixed_mode: preferred mode of panel | |
5782 | * | |
5783 | * This function is called only once at driver load to initialize basic | |
5784 | * DRRS stuff. | |
5785 | * | |
5786 | * Returns: | |
5787 | * Downclock mode if panel supports it, else return NULL. | |
5788 | * DRRS support is determined by the presence of downclock mode (apart | |
5789 | * from VBT setting). | |
5790 | */ | |
4f9db5b5 | 5791 | static struct drm_display_mode * |
96178eeb VK |
5792 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5793 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5794 | { |
5795 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5796 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5797 | struct drm_i915_private *dev_priv = dev->dev_private; |
5798 | struct drm_display_mode *downclock_mode = NULL; | |
5799 | ||
9da7d693 DV |
5800 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5801 | mutex_init(&dev_priv->drrs.mutex); | |
5802 | ||
4f9db5b5 PB |
5803 | if (INTEL_INFO(dev)->gen <= 6) { |
5804 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5805 | return NULL; | |
5806 | } | |
5807 | ||
5808 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5809 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5810 | return NULL; |
5811 | } | |
5812 | ||
5813 | downclock_mode = intel_find_panel_downclock | |
5814 | (dev, fixed_mode, connector); | |
5815 | ||
5816 | if (!downclock_mode) { | |
a1d26342 | 5817 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5818 | return NULL; |
5819 | } | |
5820 | ||
96178eeb | 5821 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5822 | |
96178eeb | 5823 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5824 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5825 | return downclock_mode; |
5826 | } | |
5827 | ||
ed92f0b2 | 5828 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5829 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5830 | { |
5831 | struct drm_connector *connector = &intel_connector->base; | |
5832 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5833 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5834 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5835 | struct drm_i915_private *dev_priv = dev->dev_private; |
5836 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5837 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5838 | bool has_dpcd; |
5839 | struct drm_display_mode *scan; | |
5840 | struct edid *edid; | |
6517d273 | 5841 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 PZ |
5842 | |
5843 | if (!is_edp(intel_dp)) | |
5844 | return true; | |
5845 | ||
49e6bc51 VS |
5846 | pps_lock(intel_dp); |
5847 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5848 | pps_unlock(intel_dp); | |
63635217 | 5849 | |
ed92f0b2 | 5850 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5851 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5852 | |
5853 | if (has_dpcd) { | |
5854 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5855 | dev_priv->no_aux_handshake = | |
5856 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5857 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5858 | } else { | |
5859 | /* if this fails, presume the device is a ghost */ | |
5860 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5861 | return false; |
5862 | } | |
5863 | ||
5864 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5865 | pps_lock(intel_dp); |
36b5f425 | 5866 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5867 | pps_unlock(intel_dp); |
ed92f0b2 | 5868 | |
060c8778 | 5869 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5870 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5871 | if (edid) { |
5872 | if (drm_add_edid_modes(connector, edid)) { | |
5873 | drm_mode_connector_update_edid_property(connector, | |
5874 | edid); | |
5875 | drm_edid_to_eld(connector, edid); | |
5876 | } else { | |
5877 | kfree(edid); | |
5878 | edid = ERR_PTR(-EINVAL); | |
5879 | } | |
5880 | } else { | |
5881 | edid = ERR_PTR(-ENOENT); | |
5882 | } | |
5883 | intel_connector->edid = edid; | |
5884 | ||
5885 | /* prefer fixed mode from EDID if available */ | |
5886 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5887 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5888 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5889 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5890 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5891 | break; |
5892 | } | |
5893 | } | |
5894 | ||
5895 | /* fallback to VBT if available for eDP */ | |
5896 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5897 | fixed_mode = drm_mode_duplicate(dev, | |
5898 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5899 | if (fixed_mode) | |
5900 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5901 | } | |
060c8778 | 5902 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5903 | |
01527b31 CT |
5904 | if (IS_VALLEYVIEW(dev)) { |
5905 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5906 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5907 | |
5908 | /* | |
5909 | * Figure out the current pipe for the initial backlight setup. | |
5910 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5911 | * fails just assume pipe A. | |
5912 | */ | |
5913 | if (IS_CHERRYVIEW(dev)) | |
5914 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5915 | else | |
5916 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5917 | ||
5918 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5919 | pipe = intel_dp->pps_pipe; | |
5920 | ||
5921 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5922 | pipe = PIPE_A; | |
5923 | ||
5924 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5925 | pipe_name(pipe)); | |
01527b31 CT |
5926 | } |
5927 | ||
4f9db5b5 | 5928 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5929 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
6517d273 | 5930 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5931 | |
5932 | return true; | |
5933 | } | |
5934 | ||
16c25533 | 5935 | bool |
f0fec3f2 PZ |
5936 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5937 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5938 | { |
f0fec3f2 PZ |
5939 | struct drm_connector *connector = &intel_connector->base; |
5940 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5941 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5942 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5943 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5944 | enum port port = intel_dig_port->port; |
0b99836f | 5945 | int type; |
a4fc5ed6 | 5946 | |
a4a5d2f8 VS |
5947 | intel_dp->pps_pipe = INVALID_PIPE; |
5948 | ||
ec5b01dd | 5949 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5950 | if (INTEL_INFO(dev)->gen >= 9) |
5951 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5952 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5953 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5954 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5955 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5956 | else if (HAS_PCH_SPLIT(dev)) | |
5957 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5958 | else | |
5959 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5960 | ||
b9ca5fad DL |
5961 | if (INTEL_INFO(dev)->gen >= 9) |
5962 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5963 | else | |
5964 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5965 | |
0767935e DV |
5966 | /* Preserve the current hw state. */ |
5967 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5968 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5969 | |
3b32a35b | 5970 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5971 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5972 | else |
5973 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5974 | |
f7d24902 ID |
5975 | /* |
5976 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5977 | * for DP the encoder type can be set by the caller to | |
5978 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5979 | */ | |
5980 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5981 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5982 | ||
c17ed5b5 VS |
5983 | /* eDP only on port B and/or C on vlv/chv */ |
5984 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5985 | port != PORT_B && port != PORT_C)) | |
5986 | return false; | |
5987 | ||
e7281eab ID |
5988 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5989 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5990 | port_name(port)); | |
5991 | ||
b329530c | 5992 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5993 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5994 | ||
a4fc5ed6 KP |
5995 | connector->interlace_allowed = true; |
5996 | connector->doublescan_allowed = 0; | |
5997 | ||
f0fec3f2 | 5998 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5999 | edp_panel_vdd_work); |
a4fc5ed6 | 6000 | |
df0e9248 | 6001 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 6002 | drm_connector_register(connector); |
a4fc5ed6 | 6003 | |
affa9354 | 6004 | if (HAS_DDI(dev)) |
bcbc889b PZ |
6005 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
6006 | else | |
6007 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 6008 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 6009 | |
0b99836f | 6010 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
6011 | switch (port) { |
6012 | case PORT_A: | |
1d843f9d | 6013 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
6014 | break; |
6015 | case PORT_B: | |
1d843f9d | 6016 | intel_encoder->hpd_pin = HPD_PORT_B; |
cf1d5883 SJ |
6017 | if (IS_BROXTON(dev_priv) && (INTEL_REVID(dev) < BXT_REVID_B0)) |
6018 | intel_encoder->hpd_pin = HPD_PORT_A; | |
ab9d7c30 PZ |
6019 | break; |
6020 | case PORT_C: | |
1d843f9d | 6021 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
6022 | break; |
6023 | case PORT_D: | |
1d843f9d | 6024 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
6025 | break; |
6026 | default: | |
ad1c0b19 | 6027 | BUG(); |
5eb08b69 ZW |
6028 | } |
6029 | ||
dada1a9f | 6030 | if (is_edp(intel_dp)) { |
773538e8 | 6031 | pps_lock(intel_dp); |
1e74a324 VS |
6032 | intel_dp_init_panel_power_timestamps(intel_dp); |
6033 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 6034 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 6035 | else |
36b5f425 | 6036 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 6037 | pps_unlock(intel_dp); |
dada1a9f | 6038 | } |
0095e6dc | 6039 | |
9d1a1031 | 6040 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 6041 | |
0e32b39c | 6042 | /* init MST on ports that can support it */ |
0c9b3715 JN |
6043 | if (HAS_DP_MST(dev) && |
6044 | (port == PORT_B || port == PORT_C || port == PORT_D)) | |
6045 | intel_dp_mst_encoder_init(intel_dig_port, | |
6046 | intel_connector->base.base.id); | |
0e32b39c | 6047 | |
36b5f425 | 6048 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 6049 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
6050 | if (is_edp(intel_dp)) { |
6051 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
6052 | /* |
6053 | * vdd might still be enabled do to the delayed vdd off. | |
6054 | * Make sure vdd is actually turned off here. | |
6055 | */ | |
773538e8 | 6056 | pps_lock(intel_dp); |
4be73780 | 6057 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 6058 | pps_unlock(intel_dp); |
15b1d171 | 6059 | } |
34ea3d38 | 6060 | drm_connector_unregister(connector); |
b2f246a8 | 6061 | drm_connector_cleanup(connector); |
16c25533 | 6062 | return false; |
b2f246a8 | 6063 | } |
32f9d658 | 6064 | |
f684960e CW |
6065 | intel_dp_add_properties(intel_dp, connector); |
6066 | ||
a4fc5ed6 KP |
6067 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
6068 | * 0xd. Failure to do so will result in spurious interrupts being | |
6069 | * generated on the port when a cable is not attached. | |
6070 | */ | |
6071 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
6072 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
6073 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
6074 | } | |
16c25533 | 6075 | |
aa7471d2 JN |
6076 | i915_debugfs_connector_add(connector); |
6077 | ||
16c25533 | 6078 | return true; |
a4fc5ed6 | 6079 | } |
f0fec3f2 PZ |
6080 | |
6081 | void | |
6082 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
6083 | { | |
13cf5504 | 6084 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
6085 | struct intel_digital_port *intel_dig_port; |
6086 | struct intel_encoder *intel_encoder; | |
6087 | struct drm_encoder *encoder; | |
6088 | struct intel_connector *intel_connector; | |
6089 | ||
b14c5679 | 6090 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
6091 | if (!intel_dig_port) |
6092 | return; | |
6093 | ||
08d9bc92 | 6094 | intel_connector = intel_connector_alloc(); |
f0fec3f2 PZ |
6095 | if (!intel_connector) { |
6096 | kfree(intel_dig_port); | |
6097 | return; | |
6098 | } | |
6099 | ||
6100 | intel_encoder = &intel_dig_port->base; | |
6101 | encoder = &intel_encoder->base; | |
6102 | ||
6103 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
6104 | DRM_MODE_ENCODER_TMDS); | |
6105 | ||
5bfe2ac0 | 6106 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 6107 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 6108 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 6109 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 6110 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 6111 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 6112 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
6113 | intel_encoder->pre_enable = chv_pre_enable_dp; |
6114 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 6115 | intel_encoder->post_disable = chv_post_disable_dp; |
d6db995f | 6116 | intel_encoder->post_pll_disable = chv_dp_post_pll_disable; |
e4a1d846 | 6117 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 6118 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
6119 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
6120 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 6121 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 6122 | } else { |
ecff4f3b JN |
6123 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
6124 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
6125 | if (INTEL_INFO(dev)->gen >= 5) |
6126 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 6127 | } |
f0fec3f2 | 6128 | |
174edf1f | 6129 | intel_dig_port->port = port; |
f0fec3f2 PZ |
6130 | intel_dig_port->dp.output_reg = output_reg; |
6131 | ||
00c09d70 | 6132 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
6133 | if (IS_CHERRYVIEW(dev)) { |
6134 | if (port == PORT_D) | |
6135 | intel_encoder->crtc_mask = 1 << 2; | |
6136 | else | |
6137 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
6138 | } else { | |
6139 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
6140 | } | |
bc079e8b | 6141 | intel_encoder->cloneable = 0; |
f0fec3f2 | 6142 | |
13cf5504 | 6143 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5fcece80 | 6144 | dev_priv->hotplug.irq_port[port] = intel_dig_port; |
13cf5504 | 6145 | |
15b1d171 PZ |
6146 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
6147 | drm_encoder_cleanup(encoder); | |
6148 | kfree(intel_dig_port); | |
b2f246a8 | 6149 | kfree(intel_connector); |
15b1d171 | 6150 | } |
f0fec3f2 | 6151 | } |
0e32b39c DA |
6152 | |
6153 | void intel_dp_mst_suspend(struct drm_device *dev) | |
6154 | { | |
6155 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6156 | int i; | |
6157 | ||
6158 | /* disable MST */ | |
6159 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 6160 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
0e32b39c DA |
6161 | if (!intel_dig_port) |
6162 | continue; | |
6163 | ||
6164 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
6165 | if (!intel_dig_port->dp.can_mst) | |
6166 | continue; | |
6167 | if (intel_dig_port->dp.is_mst) | |
6168 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
6169 | } | |
6170 | } | |
6171 | } | |
6172 | ||
6173 | void intel_dp_mst_resume(struct drm_device *dev) | |
6174 | { | |
6175 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6176 | int i; | |
6177 | ||
6178 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 6179 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
0e32b39c DA |
6180 | if (!intel_dig_port) |
6181 | continue; | |
6182 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
6183 | int ret; | |
6184 | ||
6185 | if (!intel_dig_port->dp.can_mst) | |
6186 | continue; | |
6187 | ||
6188 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
6189 | if (ret != 0) { | |
6190 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
6191 | } | |
6192 | } | |
6193 | } | |
6194 | } |