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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
01527b31 CT |
31 | #include <linux/notifier.h> |
32 | #include <linux/reboot.h> | |
760285e7 | 33 | #include <drm/drmP.h> |
c6f95f27 | 34 | #include <drm/drm_atomic_helper.h> |
760285e7 DH |
35 | #include <drm/drm_crtc.h> |
36 | #include <drm/drm_crtc_helper.h> | |
37 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 38 | #include "intel_drv.h" |
760285e7 | 39 | #include <drm/i915_drm.h> |
a4fc5ed6 | 40 | #include "i915_drv.h" |
a4fc5ed6 | 41 | |
a4fc5ed6 KP |
42 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
43 | ||
9dd4ffdf CML |
44 | struct dp_link_dpll { |
45 | int link_bw; | |
46 | struct dpll dpll; | |
47 | }; | |
48 | ||
49 | static const struct dp_link_dpll gen4_dpll[] = { | |
50 | { DP_LINK_BW_1_62, | |
51 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
52 | { DP_LINK_BW_2_7, | |
53 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
54 | }; | |
55 | ||
56 | static const struct dp_link_dpll pch_dpll[] = { | |
57 | { DP_LINK_BW_1_62, | |
58 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
59 | { DP_LINK_BW_2_7, | |
60 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
61 | }; | |
62 | ||
65ce4bf5 CML |
63 | static const struct dp_link_dpll vlv_dpll[] = { |
64 | { DP_LINK_BW_1_62, | |
58f6e632 | 65 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
66 | { DP_LINK_BW_2_7, |
67 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
68 | }; | |
69 | ||
ef9348c8 CML |
70 | /* |
71 | * CHV supports eDP 1.4 that have more link rates. | |
72 | * Below only provides the fixed rate but exclude variable rate. | |
73 | */ | |
74 | static const struct dp_link_dpll chv_dpll[] = { | |
75 | /* | |
76 | * CHV requires to program fractional division for m2. | |
77 | * m2 is stored in fixed point format using formula below | |
78 | * (m2_int << 22) | m2_fraction | |
79 | */ | |
80 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
81 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
82 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
83 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
84 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
85 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
86 | }; | |
a8f3ef61 | 87 | /* Skylake supports following rates */ |
f4896f15 VS |
88 | static const int gen9_rates[] = { 162000, 216000, 270000, |
89 | 324000, 432000, 540000 }; | |
90 | static const int default_rates[] = { 162000, 270000, 540000 }; | |
ef9348c8 | 91 | |
cfcb0fc9 JB |
92 | /** |
93 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
94 | * @intel_dp: DP struct | |
95 | * | |
96 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
97 | * will return true, and false otherwise. | |
98 | */ | |
99 | static bool is_edp(struct intel_dp *intel_dp) | |
100 | { | |
da63a9f2 PZ |
101 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
102 | ||
103 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
104 | } |
105 | ||
68b4d824 | 106 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 107 | { |
68b4d824 ID |
108 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
109 | ||
110 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
111 | } |
112 | ||
df0e9248 CW |
113 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
114 | { | |
fa90ecef | 115 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
116 | } |
117 | ||
ea5b213a | 118 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 119 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 120 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
093e3f13 | 121 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a8c3344e VS |
122 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
123 | enum pipe pipe); | |
a4fc5ed6 | 124 | |
0e32b39c | 125 | int |
ea5b213a | 126 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 127 | { |
7183dc29 | 128 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
129 | |
130 | switch (max_link_bw) { | |
131 | case DP_LINK_BW_1_62: | |
132 | case DP_LINK_BW_2_7: | |
1db10e28 | 133 | case DP_LINK_BW_5_4: |
d4eead50 | 134 | break; |
a4fc5ed6 | 135 | default: |
d4eead50 ID |
136 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
137 | max_link_bw); | |
a4fc5ed6 KP |
138 | max_link_bw = DP_LINK_BW_1_62; |
139 | break; | |
140 | } | |
141 | return max_link_bw; | |
142 | } | |
143 | ||
eeb6324d PZ |
144 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
145 | { | |
146 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
147 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
148 | u8 source_max, sink_max; | |
149 | ||
150 | source_max = 4; | |
151 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
152 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
153 | source_max = 2; | |
154 | ||
155 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
156 | ||
157 | return min(source_max, sink_max); | |
158 | } | |
159 | ||
cd9dde44 AJ |
160 | /* |
161 | * The units on the numbers in the next two are... bizarre. Examples will | |
162 | * make it clearer; this one parallels an example in the eDP spec. | |
163 | * | |
164 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
165 | * | |
166 | * 270000 * 1 * 8 / 10 == 216000 | |
167 | * | |
168 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
169 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
170 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
171 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
172 | * | |
173 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
174 | * get the result in decakilobits instead of kilobits. | |
175 | */ | |
176 | ||
a4fc5ed6 | 177 | static int |
c898261c | 178 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 179 | { |
cd9dde44 | 180 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
181 | } |
182 | ||
fe27d53e DA |
183 | static int |
184 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
185 | { | |
186 | return (max_link_clock * max_lanes * 8) / 10; | |
187 | } | |
188 | ||
c19de8eb | 189 | static enum drm_mode_status |
a4fc5ed6 KP |
190 | intel_dp_mode_valid(struct drm_connector *connector, |
191 | struct drm_display_mode *mode) | |
192 | { | |
df0e9248 | 193 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
194 | struct intel_connector *intel_connector = to_intel_connector(connector); |
195 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
196 | int target_clock = mode->clock; |
197 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 198 | |
dd06f90e JN |
199 | if (is_edp(intel_dp) && fixed_mode) { |
200 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
201 | return MODE_PANEL; |
202 | ||
dd06f90e | 203 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 204 | return MODE_PANEL; |
03afc4a2 DV |
205 | |
206 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
207 | } |
208 | ||
50fec21a | 209 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 210 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
211 | |
212 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
213 | mode_rate = intel_dp_link_required(target_clock, 18); | |
214 | ||
215 | if (mode_rate > max_rate) | |
c4867936 | 216 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
217 | |
218 | if (mode->clock < 10000) | |
219 | return MODE_CLOCK_LOW; | |
220 | ||
0af78a2b DV |
221 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
222 | return MODE_H_ILLEGAL; | |
223 | ||
a4fc5ed6 KP |
224 | return MODE_OK; |
225 | } | |
226 | ||
a4f1289e | 227 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
228 | { |
229 | int i; | |
230 | uint32_t v = 0; | |
231 | ||
232 | if (src_bytes > 4) | |
233 | src_bytes = 4; | |
234 | for (i = 0; i < src_bytes; i++) | |
235 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
236 | return v; | |
237 | } | |
238 | ||
c2af70e2 | 239 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
240 | { |
241 | int i; | |
242 | if (dst_bytes > 4) | |
243 | dst_bytes = 4; | |
244 | for (i = 0; i < dst_bytes; i++) | |
245 | dst[i] = src >> ((3-i) * 8); | |
246 | } | |
247 | ||
fb0f8fbf KP |
248 | /* hrawclock is 1/4 the FSB frequency */ |
249 | static int | |
250 | intel_hrawclk(struct drm_device *dev) | |
251 | { | |
252 | struct drm_i915_private *dev_priv = dev->dev_private; | |
253 | uint32_t clkcfg; | |
254 | ||
9473c8f4 VP |
255 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
256 | if (IS_VALLEYVIEW(dev)) | |
257 | return 200; | |
258 | ||
fb0f8fbf KP |
259 | clkcfg = I915_READ(CLKCFG); |
260 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
261 | case CLKCFG_FSB_400: | |
262 | return 100; | |
263 | case CLKCFG_FSB_533: | |
264 | return 133; | |
265 | case CLKCFG_FSB_667: | |
266 | return 166; | |
267 | case CLKCFG_FSB_800: | |
268 | return 200; | |
269 | case CLKCFG_FSB_1067: | |
270 | return 266; | |
271 | case CLKCFG_FSB_1333: | |
272 | return 333; | |
273 | /* these two are just a guess; one of them might be right */ | |
274 | case CLKCFG_FSB_1600: | |
275 | case CLKCFG_FSB_1600_ALT: | |
276 | return 400; | |
277 | default: | |
278 | return 133; | |
279 | } | |
280 | } | |
281 | ||
bf13e81b JN |
282 | static void |
283 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 284 | struct intel_dp *intel_dp); |
bf13e81b JN |
285 | static void |
286 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 287 | struct intel_dp *intel_dp); |
bf13e81b | 288 | |
773538e8 VS |
289 | static void pps_lock(struct intel_dp *intel_dp) |
290 | { | |
291 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
292 | struct intel_encoder *encoder = &intel_dig_port->base; | |
293 | struct drm_device *dev = encoder->base.dev; | |
294 | struct drm_i915_private *dev_priv = dev->dev_private; | |
295 | enum intel_display_power_domain power_domain; | |
296 | ||
297 | /* | |
298 | * See vlv_power_sequencer_reset() why we need | |
299 | * a power domain reference here. | |
300 | */ | |
301 | power_domain = intel_display_port_power_domain(encoder); | |
302 | intel_display_power_get(dev_priv, power_domain); | |
303 | ||
304 | mutex_lock(&dev_priv->pps_mutex); | |
305 | } | |
306 | ||
307 | static void pps_unlock(struct intel_dp *intel_dp) | |
308 | { | |
309 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
310 | struct intel_encoder *encoder = &intel_dig_port->base; | |
311 | struct drm_device *dev = encoder->base.dev; | |
312 | struct drm_i915_private *dev_priv = dev->dev_private; | |
313 | enum intel_display_power_domain power_domain; | |
314 | ||
315 | mutex_unlock(&dev_priv->pps_mutex); | |
316 | ||
317 | power_domain = intel_display_port_power_domain(encoder); | |
318 | intel_display_power_put(dev_priv, power_domain); | |
319 | } | |
320 | ||
961a0db0 VS |
321 | static void |
322 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
323 | { | |
324 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
325 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
326 | struct drm_i915_private *dev_priv = dev->dev_private; | |
327 | enum pipe pipe = intel_dp->pps_pipe; | |
d288f65f | 328 | bool pll_enabled; |
961a0db0 VS |
329 | uint32_t DP; |
330 | ||
331 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
332 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
333 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
334 | return; | |
335 | ||
336 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
337 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
338 | ||
339 | /* Preserve the BIOS-computed detected bit. This is | |
340 | * supposed to be read-only. | |
341 | */ | |
342 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
343 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
344 | DP |= DP_PORT_WIDTH(1); | |
345 | DP |= DP_LINK_TRAIN_PAT_1; | |
346 | ||
347 | if (IS_CHERRYVIEW(dev)) | |
348 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
349 | else if (pipe == PIPE_B) | |
350 | DP |= DP_PIPEB_SELECT; | |
351 | ||
d288f65f VS |
352 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
353 | ||
354 | /* | |
355 | * The DPLL for the pipe must be enabled for this to work. | |
356 | * So enable temporarily it if it's not already enabled. | |
357 | */ | |
358 | if (!pll_enabled) | |
359 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? | |
360 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); | |
361 | ||
961a0db0 VS |
362 | /* |
363 | * Similar magic as in intel_dp_enable_port(). | |
364 | * We _must_ do this port enable + disable trick | |
365 | * to make this power seqeuencer lock onto the port. | |
366 | * Otherwise even VDD force bit won't work. | |
367 | */ | |
368 | I915_WRITE(intel_dp->output_reg, DP); | |
369 | POSTING_READ(intel_dp->output_reg); | |
370 | ||
371 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
372 | POSTING_READ(intel_dp->output_reg); | |
373 | ||
374 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
375 | POSTING_READ(intel_dp->output_reg); | |
d288f65f VS |
376 | |
377 | if (!pll_enabled) | |
378 | vlv_force_pll_off(dev, pipe); | |
961a0db0 VS |
379 | } |
380 | ||
bf13e81b JN |
381 | static enum pipe |
382 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
383 | { | |
384 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
385 | struct drm_device *dev = intel_dig_port->base.base.dev; |
386 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
387 | struct intel_encoder *encoder; |
388 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 389 | enum pipe pipe; |
bf13e81b | 390 | |
e39b999a | 391 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 392 | |
a8c3344e VS |
393 | /* We should never land here with regular DP ports */ |
394 | WARN_ON(!is_edp(intel_dp)); | |
395 | ||
a4a5d2f8 VS |
396 | if (intel_dp->pps_pipe != INVALID_PIPE) |
397 | return intel_dp->pps_pipe; | |
398 | ||
399 | /* | |
400 | * We don't have power sequencer currently. | |
401 | * Pick one that's not used by other ports. | |
402 | */ | |
403 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
404 | base.head) { | |
405 | struct intel_dp *tmp; | |
406 | ||
407 | if (encoder->type != INTEL_OUTPUT_EDP) | |
408 | continue; | |
409 | ||
410 | tmp = enc_to_intel_dp(&encoder->base); | |
411 | ||
412 | if (tmp->pps_pipe != INVALID_PIPE) | |
413 | pipes &= ~(1 << tmp->pps_pipe); | |
414 | } | |
415 | ||
416 | /* | |
417 | * Didn't find one. This should not happen since there | |
418 | * are two power sequencers and up to two eDP ports. | |
419 | */ | |
420 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
421 | pipe = PIPE_A; |
422 | else | |
423 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 424 | |
a8c3344e VS |
425 | vlv_steal_power_sequencer(dev, pipe); |
426 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
427 | |
428 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
429 | pipe_name(intel_dp->pps_pipe), | |
430 | port_name(intel_dig_port->port)); | |
431 | ||
432 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
433 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
434 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 435 | |
961a0db0 VS |
436 | /* |
437 | * Even vdd force doesn't work until we've made | |
438 | * the power sequencer lock in on the port. | |
439 | */ | |
440 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
441 | |
442 | return intel_dp->pps_pipe; | |
443 | } | |
444 | ||
6491ab27 VS |
445 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
446 | enum pipe pipe); | |
447 | ||
448 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
449 | enum pipe pipe) | |
450 | { | |
451 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
452 | } | |
453 | ||
454 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
455 | enum pipe pipe) | |
456 | { | |
457 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
458 | } | |
459 | ||
460 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
461 | enum pipe pipe) | |
462 | { | |
463 | return true; | |
464 | } | |
bf13e81b | 465 | |
a4a5d2f8 | 466 | static enum pipe |
6491ab27 VS |
467 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
468 | enum port port, | |
469 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
470 | { |
471 | enum pipe pipe; | |
bf13e81b | 472 | |
bf13e81b JN |
473 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
474 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
475 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
476 | |
477 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
478 | continue; | |
479 | ||
6491ab27 VS |
480 | if (!pipe_check(dev_priv, pipe)) |
481 | continue; | |
482 | ||
a4a5d2f8 | 483 | return pipe; |
bf13e81b JN |
484 | } |
485 | ||
a4a5d2f8 VS |
486 | return INVALID_PIPE; |
487 | } | |
488 | ||
489 | static void | |
490 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
491 | { | |
492 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
493 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
494 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
495 | enum port port = intel_dig_port->port; |
496 | ||
497 | lockdep_assert_held(&dev_priv->pps_mutex); | |
498 | ||
499 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
500 | /* first pick one where the panel is on */ |
501 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
502 | vlv_pipe_has_pp_on); | |
503 | /* didn't find one? pick one where vdd is on */ | |
504 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
505 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
506 | vlv_pipe_has_vdd_on); | |
507 | /* didn't find one? pick one with just the correct port */ | |
508 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
509 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
510 | vlv_pipe_any); | |
a4a5d2f8 VS |
511 | |
512 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
513 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
514 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
515 | port_name(port)); | |
516 | return; | |
bf13e81b JN |
517 | } |
518 | ||
a4a5d2f8 VS |
519 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
520 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
521 | ||
36b5f425 VS |
522 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
523 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
524 | } |
525 | ||
773538e8 VS |
526 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
527 | { | |
528 | struct drm_device *dev = dev_priv->dev; | |
529 | struct intel_encoder *encoder; | |
530 | ||
531 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
532 | return; | |
533 | ||
534 | /* | |
535 | * We can't grab pps_mutex here due to deadlock with power_domain | |
536 | * mutex when power_domain functions are called while holding pps_mutex. | |
537 | * That also means that in order to use pps_pipe the code needs to | |
538 | * hold both a power domain reference and pps_mutex, and the power domain | |
539 | * reference get/put must be done while _not_ holding pps_mutex. | |
540 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
541 | * should use them always. | |
542 | */ | |
543 | ||
544 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
545 | struct intel_dp *intel_dp; | |
546 | ||
547 | if (encoder->type != INTEL_OUTPUT_EDP) | |
548 | continue; | |
549 | ||
550 | intel_dp = enc_to_intel_dp(&encoder->base); | |
551 | intel_dp->pps_pipe = INVALID_PIPE; | |
552 | } | |
bf13e81b JN |
553 | } |
554 | ||
555 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
556 | { | |
557 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
558 | ||
559 | if (HAS_PCH_SPLIT(dev)) | |
560 | return PCH_PP_CONTROL; | |
561 | else | |
562 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
563 | } | |
564 | ||
565 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
566 | { | |
567 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
568 | ||
569 | if (HAS_PCH_SPLIT(dev)) | |
570 | return PCH_PP_STATUS; | |
571 | else | |
572 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
573 | } | |
574 | ||
01527b31 CT |
575 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
576 | This function only applicable when panel PM state is not to be tracked */ | |
577 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
578 | void *unused) | |
579 | { | |
580 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
581 | edp_notifier); | |
582 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
583 | struct drm_i915_private *dev_priv = dev->dev_private; | |
584 | u32 pp_div; | |
585 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
586 | |
587 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
588 | return 0; | |
589 | ||
773538e8 | 590 | pps_lock(intel_dp); |
e39b999a | 591 | |
01527b31 | 592 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
593 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
594 | ||
01527b31 CT |
595 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
596 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
597 | pp_div = I915_READ(pp_div_reg); | |
598 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
599 | ||
600 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
601 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
602 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
603 | msleep(intel_dp->panel_power_cycle_delay); | |
604 | } | |
605 | ||
773538e8 | 606 | pps_unlock(intel_dp); |
e39b999a | 607 | |
01527b31 CT |
608 | return 0; |
609 | } | |
610 | ||
4be73780 | 611 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 612 | { |
30add22d | 613 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
614 | struct drm_i915_private *dev_priv = dev->dev_private; |
615 | ||
e39b999a VS |
616 | lockdep_assert_held(&dev_priv->pps_mutex); |
617 | ||
9a42356b VS |
618 | if (IS_VALLEYVIEW(dev) && |
619 | intel_dp->pps_pipe == INVALID_PIPE) | |
620 | return false; | |
621 | ||
bf13e81b | 622 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
623 | } |
624 | ||
4be73780 | 625 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 626 | { |
30add22d | 627 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
628 | struct drm_i915_private *dev_priv = dev->dev_private; |
629 | ||
e39b999a VS |
630 | lockdep_assert_held(&dev_priv->pps_mutex); |
631 | ||
9a42356b VS |
632 | if (IS_VALLEYVIEW(dev) && |
633 | intel_dp->pps_pipe == INVALID_PIPE) | |
634 | return false; | |
635 | ||
773538e8 | 636 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
637 | } |
638 | ||
9b984dae KP |
639 | static void |
640 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
641 | { | |
30add22d | 642 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 643 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 644 | |
9b984dae KP |
645 | if (!is_edp(intel_dp)) |
646 | return; | |
453c5420 | 647 | |
4be73780 | 648 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
649 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
650 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
651 | I915_READ(_pp_stat_reg(intel_dp)), |
652 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
653 | } |
654 | } | |
655 | ||
9ee32fea DV |
656 | static uint32_t |
657 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
658 | { | |
659 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
660 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
661 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 662 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
663 | uint32_t status; |
664 | bool done; | |
665 | ||
ef04f00d | 666 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 667 | if (has_aux_irq) |
b18ac466 | 668 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 669 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
670 | else |
671 | done = wait_for_atomic(C, 10) == 0; | |
672 | if (!done) | |
673 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
674 | has_aux_irq); | |
675 | #undef C | |
676 | ||
677 | return status; | |
678 | } | |
679 | ||
ec5b01dd | 680 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 681 | { |
174edf1f PZ |
682 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
683 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 684 | |
ec5b01dd DL |
685 | /* |
686 | * The clock divider is based off the hrawclk, and would like to run at | |
687 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 688 | */ |
ec5b01dd DL |
689 | return index ? 0 : intel_hrawclk(dev) / 2; |
690 | } | |
691 | ||
692 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
693 | { | |
694 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
695 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
696 | ||
697 | if (index) | |
698 | return 0; | |
699 | ||
700 | if (intel_dig_port->port == PORT_A) { | |
701 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
b84a1cf8 | 702 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 703 | else |
b84a1cf8 | 704 | return 225; /* eDP input clock at 450Mhz */ |
ec5b01dd DL |
705 | } else { |
706 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
707 | } | |
708 | } | |
709 | ||
710 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
711 | { | |
712 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
713 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
714 | struct drm_i915_private *dev_priv = dev->dev_private; | |
715 | ||
716 | if (intel_dig_port->port == PORT_A) { | |
717 | if (index) | |
718 | return 0; | |
719 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
2c55c336 JN |
720 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
721 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
722 | switch (index) { |
723 | case 0: return 63; | |
724 | case 1: return 72; | |
725 | default: return 0; | |
726 | } | |
ec5b01dd | 727 | } else { |
bc86625a | 728 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 729 | } |
b84a1cf8 RV |
730 | } |
731 | ||
ec5b01dd DL |
732 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
733 | { | |
734 | return index ? 0 : 100; | |
735 | } | |
736 | ||
b6b5e383 DL |
737 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
738 | { | |
739 | /* | |
740 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
741 | * derive the clock from CDCLK automatically). We still implement the | |
742 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
743 | */ | |
744 | return index ? 0 : 1; | |
745 | } | |
746 | ||
5ed12a19 DL |
747 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
748 | bool has_aux_irq, | |
749 | int send_bytes, | |
750 | uint32_t aux_clock_divider) | |
751 | { | |
752 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
753 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
754 | uint32_t precharge, timeout; | |
755 | ||
756 | if (IS_GEN6(dev)) | |
757 | precharge = 3; | |
758 | else | |
759 | precharge = 5; | |
760 | ||
761 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
762 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
763 | else | |
764 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
765 | ||
766 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 767 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 768 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 769 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 770 | timeout | |
788d4433 | 771 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
772 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
773 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 774 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
775 | } |
776 | ||
b9ca5fad DL |
777 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
778 | bool has_aux_irq, | |
779 | int send_bytes, | |
780 | uint32_t unused) | |
781 | { | |
782 | return DP_AUX_CH_CTL_SEND_BUSY | | |
783 | DP_AUX_CH_CTL_DONE | | |
784 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
785 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
786 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
787 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
788 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
789 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
790 | } | |
791 | ||
b84a1cf8 RV |
792 | static int |
793 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 794 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
795 | uint8_t *recv, int recv_size) |
796 | { | |
797 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
798 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
799 | struct drm_i915_private *dev_priv = dev->dev_private; | |
800 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
801 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 802 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
803 | int i, ret, recv_bytes; |
804 | uint32_t status; | |
5ed12a19 | 805 | int try, clock = 0; |
4e6b788c | 806 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
807 | bool vdd; |
808 | ||
773538e8 | 809 | pps_lock(intel_dp); |
e39b999a | 810 | |
72c3500a VS |
811 | /* |
812 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
813 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
814 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
815 | * ourselves. | |
816 | */ | |
1e0560e0 | 817 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
818 | |
819 | /* dp aux is extremely sensitive to irq latency, hence request the | |
820 | * lowest possible wakeup latency and so prevent the cpu from going into | |
821 | * deep sleep states. | |
822 | */ | |
823 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
824 | ||
825 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 826 | |
c67a470b PZ |
827 | intel_aux_display_runtime_get(dev_priv); |
828 | ||
11bee43e JB |
829 | /* Try to wait for any previous AUX channel activity */ |
830 | for (try = 0; try < 3; try++) { | |
ef04f00d | 831 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
832 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
833 | break; | |
834 | msleep(1); | |
835 | } | |
836 | ||
837 | if (try == 3) { | |
838 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
839 | I915_READ(ch_ctl)); | |
9ee32fea DV |
840 | ret = -EBUSY; |
841 | goto out; | |
4f7f7b7e CW |
842 | } |
843 | ||
46a5ae9f PZ |
844 | /* Only 5 data registers! */ |
845 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
846 | ret = -E2BIG; | |
847 | goto out; | |
848 | } | |
849 | ||
ec5b01dd | 850 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
851 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
852 | has_aux_irq, | |
853 | send_bytes, | |
854 | aux_clock_divider); | |
5ed12a19 | 855 | |
bc86625a CW |
856 | /* Must try at least 3 times according to DP spec */ |
857 | for (try = 0; try < 5; try++) { | |
858 | /* Load the send data into the aux channel data registers */ | |
859 | for (i = 0; i < send_bytes; i += 4) | |
860 | I915_WRITE(ch_data + i, | |
a4f1289e RV |
861 | intel_dp_pack_aux(send + i, |
862 | send_bytes - i)); | |
bc86625a CW |
863 | |
864 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 865 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
866 | |
867 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
868 | ||
869 | /* Clear done status and any errors */ | |
870 | I915_WRITE(ch_ctl, | |
871 | status | | |
872 | DP_AUX_CH_CTL_DONE | | |
873 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
874 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
875 | ||
876 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
877 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
878 | continue; | |
879 | if (status & DP_AUX_CH_CTL_DONE) | |
880 | break; | |
881 | } | |
4f7f7b7e | 882 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
883 | break; |
884 | } | |
885 | ||
a4fc5ed6 | 886 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 887 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
888 | ret = -EBUSY; |
889 | goto out; | |
a4fc5ed6 KP |
890 | } |
891 | ||
892 | /* Check for timeout or receive error. | |
893 | * Timeouts occur when the sink is not connected | |
894 | */ | |
a5b3da54 | 895 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 896 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
897 | ret = -EIO; |
898 | goto out; | |
a5b3da54 | 899 | } |
1ae8c0a5 KP |
900 | |
901 | /* Timeouts occur when the device isn't connected, so they're | |
902 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 903 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 904 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
905 | ret = -ETIMEDOUT; |
906 | goto out; | |
a4fc5ed6 KP |
907 | } |
908 | ||
909 | /* Unload any bytes sent back from the other side */ | |
910 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
911 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
912 | if (recv_bytes > recv_size) |
913 | recv_bytes = recv_size; | |
0206e353 | 914 | |
4f7f7b7e | 915 | for (i = 0; i < recv_bytes; i += 4) |
a4f1289e RV |
916 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
917 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 918 | |
9ee32fea DV |
919 | ret = recv_bytes; |
920 | out: | |
921 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 922 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 923 | |
884f19e9 JN |
924 | if (vdd) |
925 | edp_panel_vdd_off(intel_dp, false); | |
926 | ||
773538e8 | 927 | pps_unlock(intel_dp); |
e39b999a | 928 | |
9ee32fea | 929 | return ret; |
a4fc5ed6 KP |
930 | } |
931 | ||
a6c8aff0 JN |
932 | #define BARE_ADDRESS_SIZE 3 |
933 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
934 | static ssize_t |
935 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 936 | { |
9d1a1031 JN |
937 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
938 | uint8_t txbuf[20], rxbuf[20]; | |
939 | size_t txsize, rxsize; | |
a4fc5ed6 | 940 | int ret; |
a4fc5ed6 | 941 | |
9d1a1031 JN |
942 | txbuf[0] = msg->request << 4; |
943 | txbuf[1] = msg->address >> 8; | |
944 | txbuf[2] = msg->address & 0xff; | |
945 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 946 | |
9d1a1031 JN |
947 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
948 | case DP_AUX_NATIVE_WRITE: | |
949 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 950 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
9d1a1031 | 951 | rxsize = 1; |
f51a44b9 | 952 | |
9d1a1031 JN |
953 | if (WARN_ON(txsize > 20)) |
954 | return -E2BIG; | |
a4fc5ed6 | 955 | |
9d1a1031 | 956 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 957 | |
9d1a1031 JN |
958 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
959 | if (ret > 0) { | |
960 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 961 | |
9d1a1031 JN |
962 | /* Return payload size. */ |
963 | ret = msg->size; | |
964 | } | |
965 | break; | |
46a5ae9f | 966 | |
9d1a1031 JN |
967 | case DP_AUX_NATIVE_READ: |
968 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 969 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 970 | rxsize = msg->size + 1; |
a4fc5ed6 | 971 | |
9d1a1031 JN |
972 | if (WARN_ON(rxsize > 20)) |
973 | return -E2BIG; | |
a4fc5ed6 | 974 | |
9d1a1031 JN |
975 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
976 | if (ret > 0) { | |
977 | msg->reply = rxbuf[0] >> 4; | |
978 | /* | |
979 | * Assume happy day, and copy the data. The caller is | |
980 | * expected to check msg->reply before touching it. | |
981 | * | |
982 | * Return payload size. | |
983 | */ | |
984 | ret--; | |
985 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 986 | } |
9d1a1031 JN |
987 | break; |
988 | ||
989 | default: | |
990 | ret = -EINVAL; | |
991 | break; | |
a4fc5ed6 | 992 | } |
f51a44b9 | 993 | |
9d1a1031 | 994 | return ret; |
a4fc5ed6 KP |
995 | } |
996 | ||
9d1a1031 JN |
997 | static void |
998 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
999 | { | |
1000 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
1001 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1002 | enum port port = intel_dig_port->port; | |
0b99836f | 1003 | const char *name = NULL; |
ab2c0672 DA |
1004 | int ret; |
1005 | ||
33ad6626 JN |
1006 | switch (port) { |
1007 | case PORT_A: | |
1008 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 1009 | name = "DPDDC-A"; |
ab2c0672 | 1010 | break; |
33ad6626 JN |
1011 | case PORT_B: |
1012 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 1013 | name = "DPDDC-B"; |
ab2c0672 | 1014 | break; |
33ad6626 JN |
1015 | case PORT_C: |
1016 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 1017 | name = "DPDDC-C"; |
ab2c0672 | 1018 | break; |
33ad6626 JN |
1019 | case PORT_D: |
1020 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 1021 | name = "DPDDC-D"; |
33ad6626 JN |
1022 | break; |
1023 | default: | |
1024 | BUG(); | |
ab2c0672 DA |
1025 | } |
1026 | ||
1b1aad75 DL |
1027 | /* |
1028 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
1029 | * | |
1030 | * On Haswell and Broadwell though: | |
1031 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
1032 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
1033 | * | |
1034 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
1035 | */ | |
1036 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) | |
33ad6626 | 1037 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 1038 | |
0b99836f | 1039 | intel_dp->aux.name = name; |
9d1a1031 JN |
1040 | intel_dp->aux.dev = dev->dev; |
1041 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 1042 | |
0b99836f JN |
1043 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1044 | connector->base.kdev->kobj.name); | |
8316f337 | 1045 | |
4f71d0cb | 1046 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 1047 | if (ret < 0) { |
4f71d0cb | 1048 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
1049 | name, ret); |
1050 | return; | |
ab2c0672 | 1051 | } |
8a5e6aeb | 1052 | |
0b99836f JN |
1053 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
1054 | &intel_dp->aux.ddc.dev.kobj, | |
1055 | intel_dp->aux.ddc.dev.kobj.name); | |
1056 | if (ret < 0) { | |
1057 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 1058 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 1059 | } |
a4fc5ed6 KP |
1060 | } |
1061 | ||
80f65de3 ID |
1062 | static void |
1063 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
1064 | { | |
1065 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
1066 | ||
0e32b39c DA |
1067 | if (!intel_connector->mst_port) |
1068 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
1069 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
1070 | intel_connector_unregister(intel_connector); |
1071 | } | |
1072 | ||
5416d871 | 1073 | static void |
c3346ef6 | 1074 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config, int link_clock) |
5416d871 DL |
1075 | { |
1076 | u32 ctrl1; | |
1077 | ||
1078 | pipe_config->ddi_pll_sel = SKL_DPLL0; | |
1079 | pipe_config->dpll_hw_state.cfgcr1 = 0; | |
1080 | pipe_config->dpll_hw_state.cfgcr2 = 0; | |
1081 | ||
1082 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
c3346ef6 SJ |
1083 | switch (link_clock / 2) { |
1084 | case 81000: | |
5416d871 DL |
1085 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_810, |
1086 | SKL_DPLL0); | |
1087 | break; | |
c3346ef6 | 1088 | case 135000: |
5416d871 DL |
1089 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1350, |
1090 | SKL_DPLL0); | |
1091 | break; | |
c3346ef6 | 1092 | case 270000: |
5416d871 DL |
1093 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2700, |
1094 | SKL_DPLL0); | |
1095 | break; | |
c3346ef6 SJ |
1096 | case 162000: |
1097 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1620, | |
1098 | SKL_DPLL0); | |
1099 | break; | |
1100 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which | |
1101 | results in CDCLK change. Need to handle the change of CDCLK by | |
1102 | disabling pipes and re-enabling them */ | |
1103 | case 108000: | |
1104 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1080, | |
1105 | SKL_DPLL0); | |
1106 | break; | |
1107 | case 216000: | |
1108 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2160, | |
1109 | SKL_DPLL0); | |
1110 | break; | |
1111 | ||
5416d871 DL |
1112 | } |
1113 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; | |
1114 | } | |
1115 | ||
0e50338c | 1116 | static void |
5cec258b | 1117 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config, int link_bw) |
0e50338c DV |
1118 | { |
1119 | switch (link_bw) { | |
1120 | case DP_LINK_BW_1_62: | |
1121 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
1122 | break; | |
1123 | case DP_LINK_BW_2_7: | |
1124 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
1125 | break; | |
1126 | case DP_LINK_BW_5_4: | |
1127 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
1128 | break; | |
1129 | } | |
1130 | } | |
1131 | ||
fc0f8e25 | 1132 | static int |
12f6a2e2 | 1133 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
fc0f8e25 | 1134 | { |
12f6a2e2 VS |
1135 | if (intel_dp->num_supported_rates) { |
1136 | *sink_rates = intel_dp->supported_rates; | |
ea2d8a42 | 1137 | return intel_dp->num_supported_rates; |
fc0f8e25 | 1138 | } |
12f6a2e2 VS |
1139 | |
1140 | *sink_rates = default_rates; | |
1141 | ||
1142 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
fc0f8e25 SJ |
1143 | } |
1144 | ||
a8f3ef61 | 1145 | static int |
1db10e28 | 1146 | intel_dp_source_rates(struct drm_device *dev, const int **source_rates) |
a8f3ef61 | 1147 | { |
636280ba VS |
1148 | if (INTEL_INFO(dev)->gen >= 9) { |
1149 | *source_rates = gen9_rates; | |
1150 | return ARRAY_SIZE(gen9_rates); | |
a8f3ef61 | 1151 | } |
636280ba VS |
1152 | |
1153 | *source_rates = default_rates; | |
1154 | ||
1db10e28 VS |
1155 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) |
1156 | /* WaDisableHBR2:skl */ | |
1157 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
1158 | else if (INTEL_INFO(dev)->gen >= 8 || | |
1159 | (IS_HASWELL(dev) && !IS_HSW_ULX(dev))) | |
1160 | return (DP_LINK_BW_5_4 >> 3) + 1; | |
1161 | else | |
1162 | return (DP_LINK_BW_2_7 >> 3) + 1; | |
a8f3ef61 SJ |
1163 | } |
1164 | ||
c6bb3538 DV |
1165 | static void |
1166 | intel_dp_set_clock(struct intel_encoder *encoder, | |
5cec258b | 1167 | struct intel_crtc_state *pipe_config, int link_bw) |
c6bb3538 DV |
1168 | { |
1169 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1170 | const struct dp_link_dpll *divisor = NULL; |
1171 | int i, count = 0; | |
c6bb3538 DV |
1172 | |
1173 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1174 | divisor = gen4_dpll; |
1175 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1176 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1177 | divisor = pch_dpll; |
1178 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1179 | } else if (IS_CHERRYVIEW(dev)) { |
1180 | divisor = chv_dpll; | |
1181 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1182 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1183 | divisor = vlv_dpll; |
1184 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1185 | } |
9dd4ffdf CML |
1186 | |
1187 | if (divisor && count) { | |
1188 | for (i = 0; i < count; i++) { | |
1189 | if (link_bw == divisor[i].link_bw) { | |
1190 | pipe_config->dpll = divisor[i].dpll; | |
1191 | pipe_config->clock_set = true; | |
1192 | break; | |
1193 | } | |
1194 | } | |
c6bb3538 DV |
1195 | } |
1196 | } | |
1197 | ||
2ecae76a VS |
1198 | static int intersect_rates(const int *source_rates, int source_len, |
1199 | const int *sink_rates, int sink_len, | |
1200 | int *supported_rates) | |
a8f3ef61 SJ |
1201 | { |
1202 | int i = 0, j = 0, k = 0; | |
1203 | ||
a8f3ef61 SJ |
1204 | while (i < source_len && j < sink_len) { |
1205 | if (source_rates[i] == sink_rates[j]) { | |
1206 | supported_rates[k] = source_rates[i]; | |
1207 | ++k; | |
1208 | ++i; | |
1209 | ++j; | |
1210 | } else if (source_rates[i] < sink_rates[j]) { | |
1211 | ++i; | |
1212 | } else { | |
1213 | ++j; | |
1214 | } | |
1215 | } | |
1216 | return k; | |
1217 | } | |
1218 | ||
2ecae76a VS |
1219 | static int intel_supported_rates(struct intel_dp *intel_dp, |
1220 | int *supported_rates) | |
1221 | { | |
1222 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1223 | const int *source_rates, *sink_rates; | |
1224 | int source_len, sink_len; | |
1225 | ||
1226 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1227 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1228 | ||
1229 | return intersect_rates(source_rates, source_len, | |
1230 | sink_rates, sink_len, | |
1231 | supported_rates); | |
1232 | } | |
1233 | ||
f4896f15 | 1234 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1235 | { |
1236 | int i = 0; | |
1237 | ||
1238 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1239 | if (find == rates[i]) | |
1240 | break; | |
1241 | ||
1242 | return i; | |
1243 | } | |
1244 | ||
50fec21a VS |
1245 | int |
1246 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1247 | { | |
1248 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1249 | int len; | |
1250 | ||
1251 | len = intel_supported_rates(intel_dp, rates); | |
1252 | if (WARN_ON(len <= 0)) | |
1253 | return 162000; | |
1254 | ||
1255 | return rates[rate_to_index(0, rates) - 1]; | |
1256 | } | |
1257 | ||
00c09d70 | 1258 | bool |
5bfe2ac0 | 1259 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1260 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1261 | { |
5bfe2ac0 | 1262 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1263 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1264 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1265 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1266 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 1267 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 1268 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1269 | int lane_count, clock; |
56071a20 | 1270 | int min_lane_count = 1; |
eeb6324d | 1271 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1272 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1273 | int min_clock = 0; |
a8f3ef61 | 1274 | int max_clock; |
083f9560 | 1275 | int bpp, mode_rate; |
ff9a6750 | 1276 | int link_avail, link_clock; |
2ecae76a VS |
1277 | int supported_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1278 | int supported_len; | |
a8f3ef61 | 1279 | |
2ecae76a | 1280 | supported_len = intel_supported_rates(intel_dp, supported_rates); |
a8f3ef61 SJ |
1281 | |
1282 | /* No common link rates between source and sink */ | |
1283 | WARN_ON(supported_len <= 0); | |
1284 | ||
1285 | max_clock = supported_len - 1; | |
a4fc5ed6 | 1286 | |
bc7d38a4 | 1287 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1288 | pipe_config->has_pch_encoder = true; |
1289 | ||
03afc4a2 | 1290 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1291 | pipe_config->has_drrs = false; |
9ed109a7 | 1292 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 1293 | |
dd06f90e JN |
1294 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1295 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1296 | adjusted_mode); | |
2dd24552 JB |
1297 | if (!HAS_PCH_SPLIT(dev)) |
1298 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1299 | intel_connector->panel.fitting_mode); | |
1300 | else | |
b074cec8 JB |
1301 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1302 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1303 | } |
1304 | ||
cb1793ce | 1305 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1306 | return false; |
1307 | ||
083f9560 | 1308 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 SJ |
1309 | "max bw %d pixel clock %iKHz\n", |
1310 | max_lane_count, supported_rates[max_clock], | |
241bfc38 | 1311 | adjusted_mode->crtc_clock); |
083f9560 | 1312 | |
36008365 DV |
1313 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1314 | * bpc in between. */ | |
3e7ca985 | 1315 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1316 | if (is_edp(intel_dp)) { |
1317 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1318 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1319 | dev_priv->vbt.edp_bpp); | |
1320 | bpp = dev_priv->vbt.edp_bpp; | |
1321 | } | |
1322 | ||
344c5bbc JN |
1323 | /* |
1324 | * Use the maximum clock and number of lanes the eDP panel | |
1325 | * advertizes being capable of. The panels are generally | |
1326 | * designed to support only a single clock and lane | |
1327 | * configuration, and typically these values correspond to the | |
1328 | * native resolution of the panel. | |
1329 | */ | |
1330 | min_lane_count = max_lane_count; | |
1331 | min_clock = max_clock; | |
7984211e | 1332 | } |
657445fe | 1333 | |
36008365 | 1334 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1335 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1336 | bpp); | |
36008365 | 1337 | |
c6930992 | 1338 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1339 | for (lane_count = min_lane_count; |
1340 | lane_count <= max_lane_count; | |
1341 | lane_count <<= 1) { | |
1342 | ||
1343 | link_clock = supported_rates[clock]; | |
36008365 DV |
1344 | link_avail = intel_dp_max_data_rate(link_clock, |
1345 | lane_count); | |
1346 | ||
1347 | if (mode_rate <= link_avail) { | |
1348 | goto found; | |
1349 | } | |
1350 | } | |
1351 | } | |
1352 | } | |
c4867936 | 1353 | |
36008365 | 1354 | return false; |
3685a8f3 | 1355 | |
36008365 | 1356 | found: |
55bc60db VS |
1357 | if (intel_dp->color_range_auto) { |
1358 | /* | |
1359 | * See: | |
1360 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1361 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1362 | */ | |
18316c8c | 1363 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1364 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1365 | else | |
1366 | intel_dp->color_range = 0; | |
1367 | } | |
1368 | ||
3685a8f3 | 1369 | if (intel_dp->color_range) |
50f3b016 | 1370 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1371 | |
36008365 | 1372 | intel_dp->lane_count = lane_count; |
a8f3ef61 | 1373 | |
bc27b7d3 VS |
1374 | if (intel_dp->num_supported_rates) { |
1375 | intel_dp->link_bw = 0; | |
a8f3ef61 | 1376 | intel_dp->rate_select = |
2ecae76a VS |
1377 | rate_to_index(supported_rates[clock], |
1378 | intel_dp->supported_rates); | |
bc27b7d3 VS |
1379 | } else { |
1380 | intel_dp->link_bw = | |
1381 | drm_dp_link_rate_to_bw_code(supported_rates[clock]); | |
1382 | intel_dp->rate_select = 0; | |
a8f3ef61 SJ |
1383 | } |
1384 | ||
657445fe | 1385 | pipe_config->pipe_bpp = bpp; |
a8f3ef61 | 1386 | pipe_config->port_clock = supported_rates[clock]; |
a4fc5ed6 | 1387 | |
36008365 DV |
1388 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1389 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1390 | pipe_config->port_clock, bpp); |
36008365 DV |
1391 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1392 | mode_rate, link_avail); | |
a4fc5ed6 | 1393 | |
03afc4a2 | 1394 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1395 | adjusted_mode->crtc_clock, |
1396 | pipe_config->port_clock, | |
03afc4a2 | 1397 | &pipe_config->dp_m_n); |
9d1a455b | 1398 | |
439d7ac0 | 1399 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1400 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1401 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1402 | intel_link_compute_m_n(bpp, lane_count, |
1403 | intel_connector->panel.downclock_mode->clock, | |
1404 | pipe_config->port_clock, | |
1405 | &pipe_config->dp_m2_n2); | |
1406 | } | |
1407 | ||
5416d871 | 1408 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
c3346ef6 | 1409 | skl_edp_set_pll_config(pipe_config, supported_rates[clock]); |
5416d871 | 1410 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1411 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1412 | else | |
1413 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1414 | |
03afc4a2 | 1415 | return true; |
a4fc5ed6 KP |
1416 | } |
1417 | ||
7c62a164 | 1418 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1419 | { |
7c62a164 DV |
1420 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1421 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1422 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1423 | struct drm_i915_private *dev_priv = dev->dev_private; |
1424 | u32 dpa_ctl; | |
1425 | ||
6e3c9717 ACO |
1426 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1427 | crtc->config->port_clock); | |
ea9b6006 DV |
1428 | dpa_ctl = I915_READ(DP_A); |
1429 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1430 | ||
6e3c9717 | 1431 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1432 | /* For a long time we've carried around a ILK-DevA w/a for the |
1433 | * 160MHz clock. If we're really unlucky, it's still required. | |
1434 | */ | |
1435 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1436 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1437 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1438 | } else { |
1439 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1440 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1441 | } |
1ce17038 | 1442 | |
ea9b6006 DV |
1443 | I915_WRITE(DP_A, dpa_ctl); |
1444 | ||
1445 | POSTING_READ(DP_A); | |
1446 | udelay(500); | |
1447 | } | |
1448 | ||
8ac33ed3 | 1449 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1450 | { |
b934223d | 1451 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1452 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1453 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1454 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1455 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
6e3c9717 | 1456 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1457 | |
417e822d | 1458 | /* |
1a2eb460 | 1459 | * There are four kinds of DP registers: |
417e822d KP |
1460 | * |
1461 | * IBX PCH | |
1a2eb460 KP |
1462 | * SNB CPU |
1463 | * IVB CPU | |
417e822d KP |
1464 | * CPT PCH |
1465 | * | |
1466 | * IBX PCH and CPU are the same for almost everything, | |
1467 | * except that the CPU DP PLL is configured in this | |
1468 | * register | |
1469 | * | |
1470 | * CPT PCH is quite different, having many bits moved | |
1471 | * to the TRANS_DP_CTL register instead. That | |
1472 | * configuration happens (oddly) in ironlake_pch_enable | |
1473 | */ | |
9c9e7927 | 1474 | |
417e822d KP |
1475 | /* Preserve the BIOS-computed detected bit. This is |
1476 | * supposed to be read-only. | |
1477 | */ | |
1478 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1479 | |
417e822d | 1480 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1481 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1482 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1483 | |
6e3c9717 | 1484 | if (crtc->config->has_audio) |
ea5b213a | 1485 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1486 | |
417e822d | 1487 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1488 | |
bc7d38a4 | 1489 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1490 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1491 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1492 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1493 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1494 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1495 | ||
6aba5b6c | 1496 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1497 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1498 | ||
7c62a164 | 1499 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1500 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1501 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1502 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1503 | |
1504 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1505 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1506 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1507 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1508 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1509 | ||
6aba5b6c | 1510 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1511 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1512 | ||
44f37d1f CML |
1513 | if (!IS_CHERRYVIEW(dev)) { |
1514 | if (crtc->pipe == 1) | |
1515 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1516 | } else { | |
1517 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1518 | } | |
417e822d KP |
1519 | } else { |
1520 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1521 | } |
a4fc5ed6 KP |
1522 | } |
1523 | ||
ffd6749d PZ |
1524 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1525 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1526 | |
1a5ef5b7 PZ |
1527 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1528 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1529 | |
ffd6749d PZ |
1530 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1531 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1532 | |
4be73780 | 1533 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1534 | u32 mask, |
1535 | u32 value) | |
bd943159 | 1536 | { |
30add22d | 1537 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1538 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1539 | u32 pp_stat_reg, pp_ctrl_reg; |
1540 | ||
e39b999a VS |
1541 | lockdep_assert_held(&dev_priv->pps_mutex); |
1542 | ||
bf13e81b JN |
1543 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1544 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1545 | |
99ea7127 | 1546 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1547 | mask, value, |
1548 | I915_READ(pp_stat_reg), | |
1549 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1550 | |
453c5420 | 1551 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1552 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1553 | I915_READ(pp_stat_reg), |
1554 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1555 | } |
54c136d4 CW |
1556 | |
1557 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1558 | } |
32ce697c | 1559 | |
4be73780 | 1560 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1561 | { |
1562 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1563 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1564 | } |
1565 | ||
4be73780 | 1566 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1567 | { |
1568 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1569 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1570 | } |
1571 | ||
4be73780 | 1572 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1573 | { |
1574 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1575 | |
1576 | /* When we disable the VDD override bit last we have to do the manual | |
1577 | * wait. */ | |
1578 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1579 | intel_dp->panel_power_cycle_delay); | |
1580 | ||
4be73780 | 1581 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1582 | } |
1583 | ||
4be73780 | 1584 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1585 | { |
1586 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1587 | intel_dp->backlight_on_delay); | |
1588 | } | |
1589 | ||
4be73780 | 1590 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1591 | { |
1592 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1593 | intel_dp->backlight_off_delay); | |
1594 | } | |
99ea7127 | 1595 | |
832dd3c1 KP |
1596 | /* Read the current pp_control value, unlocking the register if it |
1597 | * is locked | |
1598 | */ | |
1599 | ||
453c5420 | 1600 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1601 | { |
453c5420 JB |
1602 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1603 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1604 | u32 control; | |
832dd3c1 | 1605 | |
e39b999a VS |
1606 | lockdep_assert_held(&dev_priv->pps_mutex); |
1607 | ||
bf13e81b | 1608 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1609 | control &= ~PANEL_UNLOCK_MASK; |
1610 | control |= PANEL_UNLOCK_REGS; | |
1611 | return control; | |
bd943159 KP |
1612 | } |
1613 | ||
951468f3 VS |
1614 | /* |
1615 | * Must be paired with edp_panel_vdd_off(). | |
1616 | * Must hold pps_mutex around the whole on/off sequence. | |
1617 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1618 | */ | |
1e0560e0 | 1619 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1620 | { |
30add22d | 1621 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1622 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1623 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1624 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1625 | enum intel_display_power_domain power_domain; |
5d613501 | 1626 | u32 pp; |
453c5420 | 1627 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1628 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1629 | |
e39b999a VS |
1630 | lockdep_assert_held(&dev_priv->pps_mutex); |
1631 | ||
97af61f5 | 1632 | if (!is_edp(intel_dp)) |
adddaaf4 | 1633 | return false; |
bd943159 | 1634 | |
2c623c11 | 1635 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1636 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1637 | |
4be73780 | 1638 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1639 | return need_to_disable; |
b0665d57 | 1640 | |
4e6e1a54 ID |
1641 | power_domain = intel_display_port_power_domain(intel_encoder); |
1642 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1643 | |
3936fcf4 VS |
1644 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1645 | port_name(intel_dig_port->port)); | |
bd943159 | 1646 | |
4be73780 DV |
1647 | if (!edp_have_panel_power(intel_dp)) |
1648 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1649 | |
453c5420 | 1650 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1651 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1652 | |
bf13e81b JN |
1653 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1654 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1655 | |
1656 | I915_WRITE(pp_ctrl_reg, pp); | |
1657 | POSTING_READ(pp_ctrl_reg); | |
1658 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1659 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1660 | /* |
1661 | * If the panel wasn't on, delay before accessing aux channel | |
1662 | */ | |
4be73780 | 1663 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1664 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1665 | port_name(intel_dig_port->port)); | |
f01eca2e | 1666 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1667 | } |
adddaaf4 JN |
1668 | |
1669 | return need_to_disable; | |
1670 | } | |
1671 | ||
951468f3 VS |
1672 | /* |
1673 | * Must be paired with intel_edp_panel_vdd_off() or | |
1674 | * intel_edp_panel_off(). | |
1675 | * Nested calls to these functions are not allowed since | |
1676 | * we drop the lock. Caller must use some higher level | |
1677 | * locking to prevent nested calls from other threads. | |
1678 | */ | |
b80d6c78 | 1679 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1680 | { |
c695b6b6 | 1681 | bool vdd; |
adddaaf4 | 1682 | |
c695b6b6 VS |
1683 | if (!is_edp(intel_dp)) |
1684 | return; | |
1685 | ||
773538e8 | 1686 | pps_lock(intel_dp); |
c695b6b6 | 1687 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1688 | pps_unlock(intel_dp); |
c695b6b6 | 1689 | |
e2c719b7 | 1690 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1691 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1692 | } |
1693 | ||
4be73780 | 1694 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1695 | { |
30add22d | 1696 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1697 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1698 | struct intel_digital_port *intel_dig_port = |
1699 | dp_to_dig_port(intel_dp); | |
1700 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1701 | enum intel_display_power_domain power_domain; | |
5d613501 | 1702 | u32 pp; |
453c5420 | 1703 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1704 | |
e39b999a | 1705 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1706 | |
15e899a0 | 1707 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1708 | |
15e899a0 | 1709 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1710 | return; |
b0665d57 | 1711 | |
3936fcf4 VS |
1712 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1713 | port_name(intel_dig_port->port)); | |
bd943159 | 1714 | |
be2c9196 VS |
1715 | pp = ironlake_get_pp_control(intel_dp); |
1716 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1717 | |
be2c9196 VS |
1718 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1719 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1720 | |
be2c9196 VS |
1721 | I915_WRITE(pp_ctrl_reg, pp); |
1722 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1723 | |
be2c9196 VS |
1724 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1725 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1726 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1727 | |
be2c9196 VS |
1728 | if ((pp & POWER_TARGET_ON) == 0) |
1729 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1730 | |
be2c9196 VS |
1731 | power_domain = intel_display_port_power_domain(intel_encoder); |
1732 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1733 | } |
5d613501 | 1734 | |
4be73780 | 1735 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1736 | { |
1737 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1738 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1739 | |
773538e8 | 1740 | pps_lock(intel_dp); |
15e899a0 VS |
1741 | if (!intel_dp->want_panel_vdd) |
1742 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1743 | pps_unlock(intel_dp); |
bd943159 KP |
1744 | } |
1745 | ||
aba86890 ID |
1746 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1747 | { | |
1748 | unsigned long delay; | |
1749 | ||
1750 | /* | |
1751 | * Queue the timer to fire a long time from now (relative to the power | |
1752 | * down delay) to keep the panel power up across a sequence of | |
1753 | * operations. | |
1754 | */ | |
1755 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1756 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1757 | } | |
1758 | ||
951468f3 VS |
1759 | /* |
1760 | * Must be paired with edp_panel_vdd_on(). | |
1761 | * Must hold pps_mutex around the whole on/off sequence. | |
1762 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1763 | */ | |
4be73780 | 1764 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1765 | { |
e39b999a VS |
1766 | struct drm_i915_private *dev_priv = |
1767 | intel_dp_to_dev(intel_dp)->dev_private; | |
1768 | ||
1769 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1770 | ||
97af61f5 KP |
1771 | if (!is_edp(intel_dp)) |
1772 | return; | |
5d613501 | 1773 | |
e2c719b7 | 1774 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1775 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1776 | |
bd943159 KP |
1777 | intel_dp->want_panel_vdd = false; |
1778 | ||
aba86890 | 1779 | if (sync) |
4be73780 | 1780 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1781 | else |
1782 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1783 | } |
1784 | ||
9f0fb5be | 1785 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1786 | { |
30add22d | 1787 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1788 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1789 | u32 pp; |
453c5420 | 1790 | u32 pp_ctrl_reg; |
9934c132 | 1791 | |
9f0fb5be VS |
1792 | lockdep_assert_held(&dev_priv->pps_mutex); |
1793 | ||
97af61f5 | 1794 | if (!is_edp(intel_dp)) |
bd943159 | 1795 | return; |
99ea7127 | 1796 | |
3936fcf4 VS |
1797 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1798 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1799 | |
e7a89ace VS |
1800 | if (WARN(edp_have_panel_power(intel_dp), |
1801 | "eDP port %c panel power already on\n", | |
1802 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1803 | return; |
9934c132 | 1804 | |
4be73780 | 1805 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1806 | |
bf13e81b | 1807 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1808 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1809 | if (IS_GEN5(dev)) { |
1810 | /* ILK workaround: disable reset around power sequence */ | |
1811 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1812 | I915_WRITE(pp_ctrl_reg, pp); |
1813 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1814 | } |
37c6c9b0 | 1815 | |
1c0ae80a | 1816 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1817 | if (!IS_GEN5(dev)) |
1818 | pp |= PANEL_POWER_RESET; | |
1819 | ||
453c5420 JB |
1820 | I915_WRITE(pp_ctrl_reg, pp); |
1821 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1822 | |
4be73780 | 1823 | wait_panel_on(intel_dp); |
dce56b3c | 1824 | intel_dp->last_power_on = jiffies; |
9934c132 | 1825 | |
05ce1a49 KP |
1826 | if (IS_GEN5(dev)) { |
1827 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1828 | I915_WRITE(pp_ctrl_reg, pp); |
1829 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1830 | } |
9f0fb5be | 1831 | } |
e39b999a | 1832 | |
9f0fb5be VS |
1833 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1834 | { | |
1835 | if (!is_edp(intel_dp)) | |
1836 | return; | |
1837 | ||
1838 | pps_lock(intel_dp); | |
1839 | edp_panel_on(intel_dp); | |
773538e8 | 1840 | pps_unlock(intel_dp); |
9934c132 JB |
1841 | } |
1842 | ||
9f0fb5be VS |
1843 | |
1844 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1845 | { |
4e6e1a54 ID |
1846 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1847 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1848 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1849 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1850 | enum intel_display_power_domain power_domain; |
99ea7127 | 1851 | u32 pp; |
453c5420 | 1852 | u32 pp_ctrl_reg; |
9934c132 | 1853 | |
9f0fb5be VS |
1854 | lockdep_assert_held(&dev_priv->pps_mutex); |
1855 | ||
97af61f5 KP |
1856 | if (!is_edp(intel_dp)) |
1857 | return; | |
37c6c9b0 | 1858 | |
3936fcf4 VS |
1859 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
1860 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 1861 | |
3936fcf4 VS |
1862 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
1863 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 1864 | |
453c5420 | 1865 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1866 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1867 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1868 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1869 | EDP_BLC_ENABLE); | |
453c5420 | 1870 | |
bf13e81b | 1871 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1872 | |
849e39f5 PZ |
1873 | intel_dp->want_panel_vdd = false; |
1874 | ||
453c5420 JB |
1875 | I915_WRITE(pp_ctrl_reg, pp); |
1876 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1877 | |
dce56b3c | 1878 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1879 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1880 | |
1881 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1882 | power_domain = intel_display_port_power_domain(intel_encoder); |
1883 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 1884 | } |
e39b999a | 1885 | |
9f0fb5be VS |
1886 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
1887 | { | |
1888 | if (!is_edp(intel_dp)) | |
1889 | return; | |
e39b999a | 1890 | |
9f0fb5be VS |
1891 | pps_lock(intel_dp); |
1892 | edp_panel_off(intel_dp); | |
773538e8 | 1893 | pps_unlock(intel_dp); |
9934c132 JB |
1894 | } |
1895 | ||
1250d107 JN |
1896 | /* Enable backlight in the panel power control. */ |
1897 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1898 | { |
da63a9f2 PZ |
1899 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1900 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1901 | struct drm_i915_private *dev_priv = dev->dev_private; |
1902 | u32 pp; | |
453c5420 | 1903 | u32 pp_ctrl_reg; |
32f9d658 | 1904 | |
01cb9ea6 JB |
1905 | /* |
1906 | * If we enable the backlight right away following a panel power | |
1907 | * on, we may see slight flicker as the panel syncs with the eDP | |
1908 | * link. So delay a bit to make sure the image is solid before | |
1909 | * allowing it to appear. | |
1910 | */ | |
4be73780 | 1911 | wait_backlight_on(intel_dp); |
e39b999a | 1912 | |
773538e8 | 1913 | pps_lock(intel_dp); |
e39b999a | 1914 | |
453c5420 | 1915 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1916 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1917 | |
bf13e81b | 1918 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1919 | |
1920 | I915_WRITE(pp_ctrl_reg, pp); | |
1921 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1922 | |
773538e8 | 1923 | pps_unlock(intel_dp); |
32f9d658 ZW |
1924 | } |
1925 | ||
1250d107 JN |
1926 | /* Enable backlight PWM and backlight PP control. */ |
1927 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1928 | { | |
1929 | if (!is_edp(intel_dp)) | |
1930 | return; | |
1931 | ||
1932 | DRM_DEBUG_KMS("\n"); | |
1933 | ||
1934 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1935 | _intel_edp_backlight_on(intel_dp); | |
1936 | } | |
1937 | ||
1938 | /* Disable backlight in the panel power control. */ | |
1939 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 1940 | { |
30add22d | 1941 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1942 | struct drm_i915_private *dev_priv = dev->dev_private; |
1943 | u32 pp; | |
453c5420 | 1944 | u32 pp_ctrl_reg; |
32f9d658 | 1945 | |
f01eca2e KP |
1946 | if (!is_edp(intel_dp)) |
1947 | return; | |
1948 | ||
773538e8 | 1949 | pps_lock(intel_dp); |
e39b999a | 1950 | |
453c5420 | 1951 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1952 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1953 | |
bf13e81b | 1954 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1955 | |
1956 | I915_WRITE(pp_ctrl_reg, pp); | |
1957 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 1958 | |
773538e8 | 1959 | pps_unlock(intel_dp); |
e39b999a VS |
1960 | |
1961 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 1962 | edp_wait_backlight_off(intel_dp); |
1250d107 | 1963 | } |
f7d2323c | 1964 | |
1250d107 JN |
1965 | /* Disable backlight PP control and backlight PWM. */ |
1966 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
1967 | { | |
1968 | if (!is_edp(intel_dp)) | |
1969 | return; | |
1970 | ||
1971 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 1972 | |
1250d107 | 1973 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 1974 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 1975 | } |
a4fc5ed6 | 1976 | |
73580fb7 JN |
1977 | /* |
1978 | * Hook for controlling the panel power control backlight through the bl_power | |
1979 | * sysfs attribute. Take care to handle multiple calls. | |
1980 | */ | |
1981 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
1982 | bool enable) | |
1983 | { | |
1984 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
1985 | bool is_enabled; |
1986 | ||
773538e8 | 1987 | pps_lock(intel_dp); |
e39b999a | 1988 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 1989 | pps_unlock(intel_dp); |
73580fb7 JN |
1990 | |
1991 | if (is_enabled == enable) | |
1992 | return; | |
1993 | ||
23ba9373 JN |
1994 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
1995 | enable ? "enable" : "disable"); | |
73580fb7 JN |
1996 | |
1997 | if (enable) | |
1998 | _intel_edp_backlight_on(intel_dp); | |
1999 | else | |
2000 | _intel_edp_backlight_off(intel_dp); | |
2001 | } | |
2002 | ||
2bd2ad64 | 2003 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2004 | { |
da63a9f2 PZ |
2005 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2006 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2007 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2008 | struct drm_i915_private *dev_priv = dev->dev_private; |
2009 | u32 dpa_ctl; | |
2010 | ||
2bd2ad64 DV |
2011 | assert_pipe_disabled(dev_priv, |
2012 | to_intel_crtc(crtc)->pipe); | |
2013 | ||
d240f20f JB |
2014 | DRM_DEBUG_KMS("\n"); |
2015 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2016 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2017 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2018 | ||
2019 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2020 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2021 | * enable bits here to ensure that we don't enable too much. */ | |
2022 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2023 | intel_dp->DP |= DP_PLL_ENABLE; | |
2024 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2025 | POSTING_READ(DP_A); |
2026 | udelay(200); | |
d240f20f JB |
2027 | } |
2028 | ||
2bd2ad64 | 2029 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2030 | { |
da63a9f2 PZ |
2031 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2032 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2033 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2034 | struct drm_i915_private *dev_priv = dev->dev_private; |
2035 | u32 dpa_ctl; | |
2036 | ||
2bd2ad64 DV |
2037 | assert_pipe_disabled(dev_priv, |
2038 | to_intel_crtc(crtc)->pipe); | |
2039 | ||
d240f20f | 2040 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2041 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2042 | "dp pll off, should be on\n"); | |
2043 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2044 | ||
2045 | /* We can't rely on the value tracked for the DP register in | |
2046 | * intel_dp->DP because link_down must not change that (otherwise link | |
2047 | * re-training will fail. */ | |
298b0b39 | 2048 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2049 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2050 | POSTING_READ(DP_A); |
d240f20f JB |
2051 | udelay(200); |
2052 | } | |
2053 | ||
c7ad3810 | 2054 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2055 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2056 | { |
2057 | int ret, i; | |
2058 | ||
2059 | /* Should have a valid DPCD by this point */ | |
2060 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2061 | return; | |
2062 | ||
2063 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2064 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2065 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2066 | } else { |
2067 | /* | |
2068 | * When turning on, we need to retry for 1ms to give the sink | |
2069 | * time to wake up. | |
2070 | */ | |
2071 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2072 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2073 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2074 | if (ret == 1) |
2075 | break; | |
2076 | msleep(1); | |
2077 | } | |
2078 | } | |
f9cac721 JN |
2079 | |
2080 | if (ret != 1) | |
2081 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2082 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2083 | } |
2084 | ||
19d8fe15 DV |
2085 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2086 | enum pipe *pipe) | |
d240f20f | 2087 | { |
19d8fe15 | 2088 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2089 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2090 | struct drm_device *dev = encoder->base.dev; |
2091 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2092 | enum intel_display_power_domain power_domain; |
2093 | u32 tmp; | |
2094 | ||
2095 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2096 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2097 | return false; |
2098 | ||
2099 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2100 | |
2101 | if (!(tmp & DP_PORT_EN)) | |
2102 | return false; | |
2103 | ||
bc7d38a4 | 2104 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 2105 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
2106 | } else if (IS_CHERRYVIEW(dev)) { |
2107 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 2108 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
2109 | *pipe = PORT_TO_PIPE(tmp); |
2110 | } else { | |
2111 | u32 trans_sel; | |
2112 | u32 trans_dp; | |
2113 | int i; | |
2114 | ||
2115 | switch (intel_dp->output_reg) { | |
2116 | case PCH_DP_B: | |
2117 | trans_sel = TRANS_DP_PORT_SEL_B; | |
2118 | break; | |
2119 | case PCH_DP_C: | |
2120 | trans_sel = TRANS_DP_PORT_SEL_C; | |
2121 | break; | |
2122 | case PCH_DP_D: | |
2123 | trans_sel = TRANS_DP_PORT_SEL_D; | |
2124 | break; | |
2125 | default: | |
2126 | return true; | |
2127 | } | |
2128 | ||
055e393f | 2129 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
2130 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
2131 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
2132 | *pipe = i; | |
2133 | return true; | |
2134 | } | |
2135 | } | |
19d8fe15 | 2136 | |
4a0833ec DV |
2137 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2138 | intel_dp->output_reg); | |
2139 | } | |
d240f20f | 2140 | |
19d8fe15 DV |
2141 | return true; |
2142 | } | |
d240f20f | 2143 | |
045ac3b5 | 2144 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2145 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2146 | { |
2147 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2148 | u32 tmp, flags = 0; |
63000ef6 XZ |
2149 | struct drm_device *dev = encoder->base.dev; |
2150 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2151 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2152 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2153 | int dotclock; |
045ac3b5 | 2154 | |
9ed109a7 DV |
2155 | tmp = I915_READ(intel_dp->output_reg); |
2156 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
2157 | pipe_config->has_audio = true; | |
2158 | ||
63000ef6 | 2159 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
2160 | if (tmp & DP_SYNC_HS_HIGH) |
2161 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2162 | else | |
2163 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2164 | |
63000ef6 XZ |
2165 | if (tmp & DP_SYNC_VS_HIGH) |
2166 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2167 | else | |
2168 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2169 | } else { | |
2170 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
2171 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
2172 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2173 | else | |
2174 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2175 | |
63000ef6 XZ |
2176 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
2177 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2178 | else | |
2179 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2180 | } | |
045ac3b5 | 2181 | |
2d112de7 | 2182 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2183 | |
8c875fca VS |
2184 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2185 | tmp & DP_COLOR_RANGE_16_235) | |
2186 | pipe_config->limited_color_range = true; | |
2187 | ||
eb14cb74 VS |
2188 | pipe_config->has_dp_encoder = true; |
2189 | ||
2190 | intel_dp_get_m_n(crtc, pipe_config); | |
2191 | ||
18442d08 | 2192 | if (port == PORT_A) { |
f1f644dc JB |
2193 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2194 | pipe_config->port_clock = 162000; | |
2195 | else | |
2196 | pipe_config->port_clock = 270000; | |
2197 | } | |
18442d08 VS |
2198 | |
2199 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2200 | &pipe_config->dp_m_n); | |
2201 | ||
2202 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2203 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2204 | ||
2d112de7 | 2205 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2206 | |
c6cd2ee2 JN |
2207 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2208 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2209 | /* | |
2210 | * This is a big fat ugly hack. | |
2211 | * | |
2212 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2213 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2214 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2215 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2216 | * max, not what it tells us to use. | |
2217 | * | |
2218 | * Note: This will still be broken if the eDP panel is not lit | |
2219 | * up by the BIOS, and thus we can't get the mode at module | |
2220 | * load. | |
2221 | */ | |
2222 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2223 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2224 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2225 | } | |
045ac3b5 JB |
2226 | } |
2227 | ||
e8cb4558 | 2228 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2229 | { |
e8cb4558 | 2230 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2231 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2232 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2233 | ||
6e3c9717 | 2234 | if (crtc->config->has_audio) |
495a5bb8 | 2235 | intel_audio_codec_disable(encoder); |
6cb49835 | 2236 | |
b32c6f48 RV |
2237 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2238 | intel_psr_disable(intel_dp); | |
2239 | ||
6cb49835 DV |
2240 | /* Make sure the panel is off before trying to change the mode. But also |
2241 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2242 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2243 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2244 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2245 | intel_edp_panel_off(intel_dp); |
3739850b | 2246 | |
08aff3fe VS |
2247 | /* disable the port before the pipe on g4x */ |
2248 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2249 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2250 | } |
2251 | ||
08aff3fe | 2252 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2253 | { |
2bd2ad64 | 2254 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2255 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2256 | |
49277c31 | 2257 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2258 | if (port == PORT_A) |
2259 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2260 | } |
2261 | ||
2262 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2263 | { | |
2264 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2265 | ||
2266 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2267 | } |
2268 | ||
580d3811 VS |
2269 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2270 | { | |
2271 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2272 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2273 | struct drm_device *dev = encoder->base.dev; | |
2274 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2275 | struct intel_crtc *intel_crtc = | |
2276 | to_intel_crtc(encoder->base.crtc); | |
2277 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2278 | enum pipe pipe = intel_crtc->pipe; | |
2279 | u32 val; | |
2280 | ||
2281 | intel_dp_link_down(intel_dp); | |
2282 | ||
2283 | mutex_lock(&dev_priv->dpio_lock); | |
2284 | ||
2285 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2286 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2287 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2288 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2289 | |
97fd4d5c VS |
2290 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2291 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2292 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2293 | ||
2294 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2295 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2296 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2297 | ||
2298 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2299 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2300 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2301 | |
2302 | mutex_unlock(&dev_priv->dpio_lock); | |
2303 | } | |
2304 | ||
7b13b58a VS |
2305 | static void |
2306 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2307 | uint32_t *DP, | |
2308 | uint8_t dp_train_pat) | |
2309 | { | |
2310 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2311 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2312 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2313 | enum port port = intel_dig_port->port; | |
2314 | ||
2315 | if (HAS_DDI(dev)) { | |
2316 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2317 | ||
2318 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2319 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2320 | else | |
2321 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2322 | ||
2323 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2324 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2325 | case DP_TRAINING_PATTERN_DISABLE: | |
2326 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2327 | ||
2328 | break; | |
2329 | case DP_TRAINING_PATTERN_1: | |
2330 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2331 | break; | |
2332 | case DP_TRAINING_PATTERN_2: | |
2333 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2334 | break; | |
2335 | case DP_TRAINING_PATTERN_3: | |
2336 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2337 | break; | |
2338 | } | |
2339 | I915_WRITE(DP_TP_CTL(port), temp); | |
2340 | ||
2341 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2342 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2343 | ||
2344 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2345 | case DP_TRAINING_PATTERN_DISABLE: | |
2346 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2347 | break; | |
2348 | case DP_TRAINING_PATTERN_1: | |
2349 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2350 | break; | |
2351 | case DP_TRAINING_PATTERN_2: | |
2352 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2353 | break; | |
2354 | case DP_TRAINING_PATTERN_3: | |
2355 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2356 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2357 | break; | |
2358 | } | |
2359 | ||
2360 | } else { | |
2361 | if (IS_CHERRYVIEW(dev)) | |
2362 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2363 | else | |
2364 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2365 | ||
2366 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2367 | case DP_TRAINING_PATTERN_DISABLE: | |
2368 | *DP |= DP_LINK_TRAIN_OFF; | |
2369 | break; | |
2370 | case DP_TRAINING_PATTERN_1: | |
2371 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2372 | break; | |
2373 | case DP_TRAINING_PATTERN_2: | |
2374 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2375 | break; | |
2376 | case DP_TRAINING_PATTERN_3: | |
2377 | if (IS_CHERRYVIEW(dev)) { | |
2378 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2379 | } else { | |
2380 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2381 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2382 | } | |
2383 | break; | |
2384 | } | |
2385 | } | |
2386 | } | |
2387 | ||
2388 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2389 | { | |
2390 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2391 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2392 | ||
7b13b58a VS |
2393 | /* enable with pattern 1 (as per spec) */ |
2394 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2395 | DP_TRAINING_PATTERN_1); | |
2396 | ||
2397 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2398 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2399 | |
2400 | /* | |
2401 | * Magic for VLV/CHV. We _must_ first set up the register | |
2402 | * without actually enabling the port, and then do another | |
2403 | * write to enable the port. Otherwise link training will | |
2404 | * fail when the power sequencer is freshly used for this port. | |
2405 | */ | |
2406 | intel_dp->DP |= DP_PORT_EN; | |
2407 | ||
2408 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2409 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2410 | } |
2411 | ||
e8cb4558 | 2412 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2413 | { |
e8cb4558 DV |
2414 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2415 | struct drm_device *dev = encoder->base.dev; | |
2416 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2417 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2418 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
5d613501 | 2419 | |
0c33d8d7 DV |
2420 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2421 | return; | |
5d613501 | 2422 | |
093e3f13 VS |
2423 | pps_lock(intel_dp); |
2424 | ||
2425 | if (IS_VALLEYVIEW(dev)) | |
2426 | vlv_init_panel_power_sequencer(intel_dp); | |
2427 | ||
7b13b58a | 2428 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2429 | |
2430 | edp_panel_vdd_on(intel_dp); | |
2431 | edp_panel_on(intel_dp); | |
2432 | edp_panel_vdd_off(intel_dp, true); | |
2433 | ||
2434 | pps_unlock(intel_dp); | |
2435 | ||
61234fa5 VS |
2436 | if (IS_VALLEYVIEW(dev)) |
2437 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp)); | |
2438 | ||
f01eca2e | 2439 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2440 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2441 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2442 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2443 | |
6e3c9717 | 2444 | if (crtc->config->has_audio) { |
c1dec79a JN |
2445 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2446 | pipe_name(crtc->pipe)); | |
2447 | intel_audio_codec_enable(encoder); | |
2448 | } | |
ab1f90f9 | 2449 | } |
89b667f8 | 2450 | |
ecff4f3b JN |
2451 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2452 | { | |
828f5c6e JN |
2453 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2454 | ||
ecff4f3b | 2455 | intel_enable_dp(encoder); |
4be73780 | 2456 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2457 | } |
89b667f8 | 2458 | |
ab1f90f9 JN |
2459 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2460 | { | |
828f5c6e JN |
2461 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2462 | ||
4be73780 | 2463 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2464 | intel_psr_enable(intel_dp); |
d240f20f JB |
2465 | } |
2466 | ||
ecff4f3b | 2467 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2468 | { |
2469 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2470 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2471 | ||
8ac33ed3 DV |
2472 | intel_dp_prepare(encoder); |
2473 | ||
d41f1efb DV |
2474 | /* Only ilk+ has port A */ |
2475 | if (dport->port == PORT_A) { | |
2476 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2477 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2478 | } |
ab1f90f9 JN |
2479 | } |
2480 | ||
83b84597 VS |
2481 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2482 | { | |
2483 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2484 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2485 | enum pipe pipe = intel_dp->pps_pipe; | |
2486 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2487 | ||
2488 | edp_panel_vdd_off_sync(intel_dp); | |
2489 | ||
2490 | /* | |
2491 | * VLV seems to get confused when multiple power seqeuencers | |
2492 | * have the same port selected (even if only one has power/vdd | |
2493 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2494 | * CHV on the other hand doesn't seem to mind having the same port | |
2495 | * selected in multiple power seqeuencers, but let's clear the | |
2496 | * port select always when logically disconnecting a power sequencer | |
2497 | * from a port. | |
2498 | */ | |
2499 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2500 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2501 | I915_WRITE(pp_on_reg, 0); | |
2502 | POSTING_READ(pp_on_reg); | |
2503 | ||
2504 | intel_dp->pps_pipe = INVALID_PIPE; | |
2505 | } | |
2506 | ||
a4a5d2f8 VS |
2507 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2508 | enum pipe pipe) | |
2509 | { | |
2510 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2511 | struct intel_encoder *encoder; | |
2512 | ||
2513 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2514 | ||
ac3c12e4 VS |
2515 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2516 | return; | |
2517 | ||
a4a5d2f8 VS |
2518 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2519 | base.head) { | |
2520 | struct intel_dp *intel_dp; | |
773538e8 | 2521 | enum port port; |
a4a5d2f8 VS |
2522 | |
2523 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2524 | continue; | |
2525 | ||
2526 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2527 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2528 | |
2529 | if (intel_dp->pps_pipe != pipe) | |
2530 | continue; | |
2531 | ||
2532 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2533 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2534 | |
034e43c6 VS |
2535 | WARN(encoder->connectors_active, |
2536 | "stealing pipe %c power sequencer from active eDP port %c\n", | |
2537 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2538 | |
a4a5d2f8 | 2539 | /* make sure vdd is off before we steal it */ |
83b84597 | 2540 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2541 | } |
2542 | } | |
2543 | ||
2544 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2545 | { | |
2546 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2547 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2548 | struct drm_device *dev = encoder->base.dev; | |
2549 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2550 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2551 | |
2552 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2553 | ||
093e3f13 VS |
2554 | if (!is_edp(intel_dp)) |
2555 | return; | |
2556 | ||
a4a5d2f8 VS |
2557 | if (intel_dp->pps_pipe == crtc->pipe) |
2558 | return; | |
2559 | ||
2560 | /* | |
2561 | * If another power sequencer was being used on this | |
2562 | * port previously make sure to turn off vdd there while | |
2563 | * we still have control of it. | |
2564 | */ | |
2565 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2566 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2567 | |
2568 | /* | |
2569 | * We may be stealing the power | |
2570 | * sequencer from another port. | |
2571 | */ | |
2572 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2573 | ||
2574 | /* now it's all ours */ | |
2575 | intel_dp->pps_pipe = crtc->pipe; | |
2576 | ||
2577 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2578 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2579 | ||
2580 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2581 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2582 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2583 | } |
2584 | ||
ab1f90f9 | 2585 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2586 | { |
2bd2ad64 | 2587 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2588 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2589 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2590 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2591 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2592 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2593 | int pipe = intel_crtc->pipe; |
2594 | u32 val; | |
a4fc5ed6 | 2595 | |
ab1f90f9 | 2596 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2597 | |
ab3c759a | 2598 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2599 | val = 0; |
2600 | if (pipe) | |
2601 | val |= (1<<21); | |
2602 | else | |
2603 | val &= ~(1<<21); | |
2604 | val |= 0x001000c4; | |
ab3c759a CML |
2605 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2606 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2607 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2608 | |
ab1f90f9 JN |
2609 | mutex_unlock(&dev_priv->dpio_lock); |
2610 | ||
2611 | intel_enable_dp(encoder); | |
89b667f8 JB |
2612 | } |
2613 | ||
ecff4f3b | 2614 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2615 | { |
2616 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2617 | struct drm_device *dev = encoder->base.dev; | |
2618 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2619 | struct intel_crtc *intel_crtc = |
2620 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2621 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2622 | int pipe = intel_crtc->pipe; |
89b667f8 | 2623 | |
8ac33ed3 DV |
2624 | intel_dp_prepare(encoder); |
2625 | ||
89b667f8 | 2626 | /* Program Tx lane resets to default */ |
0980a60f | 2627 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2628 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2629 | DPIO_PCS_TX_LANE2_RESET | |
2630 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2631 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2632 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2633 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2634 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2635 | DPIO_PCS_CLK_SOFT_RESET); | |
2636 | ||
2637 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2638 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2639 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2640 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2641 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2642 | } |
2643 | ||
e4a1d846 CML |
2644 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2645 | { | |
2646 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2647 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2648 | struct drm_device *dev = encoder->base.dev; | |
2649 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2650 | struct intel_crtc *intel_crtc = |
2651 | to_intel_crtc(encoder->base.crtc); | |
2652 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2653 | int pipe = intel_crtc->pipe; | |
2654 | int data, i; | |
949c1d43 | 2655 | u32 val; |
e4a1d846 | 2656 | |
e4a1d846 | 2657 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 | 2658 | |
570e2a74 VS |
2659 | /* allow hardware to manage TX FIFO reset source */ |
2660 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2661 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2662 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2663 | ||
2664 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2665 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2666 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2667 | ||
949c1d43 | 2668 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2669 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2670 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2671 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2672 | ||
2673 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2674 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2675 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2676 | ||
2677 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2678 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2679 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2680 | |
97fd4d5c | 2681 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2682 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2683 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2684 | |
2685 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2686 | for (i = 0; i < 4; i++) { |
2687 | /* Set the latency optimal bit */ | |
2688 | data = (i == 1) ? 0x0 : 0x6; | |
2689 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2690 | data << DPIO_FRC_LATENCY_SHFIT); | |
2691 | ||
2692 | /* Set the upar bit */ | |
2693 | data = (i == 1) ? 0x0 : 0x1; | |
2694 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2695 | data << DPIO_UPAR_SHIFT); | |
2696 | } | |
2697 | ||
2698 | /* Data lane stagger programming */ | |
2699 | /* FIXME: Fix up value only after power analysis */ | |
2700 | ||
2701 | mutex_unlock(&dev_priv->dpio_lock); | |
2702 | ||
e4a1d846 | 2703 | intel_enable_dp(encoder); |
e4a1d846 CML |
2704 | } |
2705 | ||
9197c88b VS |
2706 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2707 | { | |
2708 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2709 | struct drm_device *dev = encoder->base.dev; | |
2710 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2711 | struct intel_crtc *intel_crtc = | |
2712 | to_intel_crtc(encoder->base.crtc); | |
2713 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2714 | enum pipe pipe = intel_crtc->pipe; | |
2715 | u32 val; | |
2716 | ||
625695f8 VS |
2717 | intel_dp_prepare(encoder); |
2718 | ||
9197c88b VS |
2719 | mutex_lock(&dev_priv->dpio_lock); |
2720 | ||
b9e5ac3c VS |
2721 | /* program left/right clock distribution */ |
2722 | if (pipe != PIPE_B) { | |
2723 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2724 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2725 | if (ch == DPIO_CH0) | |
2726 | val |= CHV_BUFLEFTENA1_FORCE; | |
2727 | if (ch == DPIO_CH1) | |
2728 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2729 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2730 | } else { | |
2731 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2732 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2733 | if (ch == DPIO_CH0) | |
2734 | val |= CHV_BUFLEFTENA2_FORCE; | |
2735 | if (ch == DPIO_CH1) | |
2736 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2737 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2738 | } | |
2739 | ||
9197c88b VS |
2740 | /* program clock channel usage */ |
2741 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2742 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2743 | if (pipe != PIPE_B) | |
2744 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2745 | else | |
2746 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2747 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2748 | ||
2749 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2750 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2751 | if (pipe != PIPE_B) | |
2752 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2753 | else | |
2754 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2755 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2756 | ||
2757 | /* | |
2758 | * This a a bit weird since generally CL | |
2759 | * matches the pipe, but here we need to | |
2760 | * pick the CL based on the port. | |
2761 | */ | |
2762 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2763 | if (pipe != PIPE_B) | |
2764 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2765 | else | |
2766 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2767 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2768 | ||
2769 | mutex_unlock(&dev_priv->dpio_lock); | |
2770 | } | |
2771 | ||
a4fc5ed6 | 2772 | /* |
df0c237d JB |
2773 | * Native read with retry for link status and receiver capability reads for |
2774 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2775 | * |
2776 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2777 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2778 | */ |
9d1a1031 JN |
2779 | static ssize_t |
2780 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2781 | void *buffer, size_t size) | |
a4fc5ed6 | 2782 | { |
9d1a1031 JN |
2783 | ssize_t ret; |
2784 | int i; | |
61da5fab | 2785 | |
f6a19066 VS |
2786 | /* |
2787 | * Sometime we just get the same incorrect byte repeated | |
2788 | * over the entire buffer. Doing just one throw away read | |
2789 | * initially seems to "solve" it. | |
2790 | */ | |
2791 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
2792 | ||
61da5fab | 2793 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2794 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2795 | if (ret == size) | |
2796 | return ret; | |
61da5fab JB |
2797 | msleep(1); |
2798 | } | |
a4fc5ed6 | 2799 | |
9d1a1031 | 2800 | return ret; |
a4fc5ed6 KP |
2801 | } |
2802 | ||
2803 | /* | |
2804 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2805 | * link status information | |
2806 | */ | |
2807 | static bool | |
93f62dad | 2808 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2809 | { |
9d1a1031 JN |
2810 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2811 | DP_LANE0_1_STATUS, | |
2812 | link_status, | |
2813 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2814 | } |
2815 | ||
1100244e | 2816 | /* These are source-specific values. */ |
a4fc5ed6 | 2817 | static uint8_t |
1a2eb460 | 2818 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2819 | { |
30add22d | 2820 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 2821 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 2822 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2823 | |
7ad14a29 SJ |
2824 | if (INTEL_INFO(dev)->gen >= 9) { |
2825 | if (dev_priv->vbt.edp_low_vswing && port == PORT_A) | |
2826 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
5a9d1f1a | 2827 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 2828 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 2829 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2830 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2831 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2832 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2833 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2834 | else |
bd60018a | 2835 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2836 | } |
2837 | ||
2838 | static uint8_t | |
2839 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2840 | { | |
30add22d | 2841 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2842 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2843 | |
5a9d1f1a DL |
2844 | if (INTEL_INFO(dev)->gen >= 9) { |
2845 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2846 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
2847 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2848 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2849 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2850 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2851 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
2852 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
2853 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
2854 | default: |
2855 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
2856 | } | |
2857 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 2858 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2859 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2860 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2861 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2862 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2863 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2864 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2865 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2866 | default: |
bd60018a | 2867 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2868 | } |
e2fa6fba P |
2869 | } else if (IS_VALLEYVIEW(dev)) { |
2870 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2871 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2872 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2873 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2874 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2875 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2876 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2877 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2878 | default: |
bd60018a | 2879 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2880 | } |
bc7d38a4 | 2881 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2882 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2883 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2884 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2885 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2886 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2887 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2888 | default: |
bd60018a | 2889 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2890 | } |
2891 | } else { | |
2892 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2893 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2894 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2895 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2896 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2897 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2898 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2899 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2900 | default: |
bd60018a | 2901 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2902 | } |
a4fc5ed6 KP |
2903 | } |
2904 | } | |
2905 | ||
e2fa6fba P |
2906 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2907 | { | |
2908 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2909 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2910 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2911 | struct intel_crtc *intel_crtc = |
2912 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2913 | unsigned long demph_reg_value, preemph_reg_value, |
2914 | uniqtranscale_reg_value; | |
2915 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2916 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2917 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2918 | |
2919 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2920 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2921 | preemph_reg_value = 0x0004000; |
2922 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2923 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2924 | demph_reg_value = 0x2B405555; |
2925 | uniqtranscale_reg_value = 0x552AB83A; | |
2926 | break; | |
bd60018a | 2927 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2928 | demph_reg_value = 0x2B404040; |
2929 | uniqtranscale_reg_value = 0x5548B83A; | |
2930 | break; | |
bd60018a | 2931 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2932 | demph_reg_value = 0x2B245555; |
2933 | uniqtranscale_reg_value = 0x5560B83A; | |
2934 | break; | |
bd60018a | 2935 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
2936 | demph_reg_value = 0x2B405555; |
2937 | uniqtranscale_reg_value = 0x5598DA3A; | |
2938 | break; | |
2939 | default: | |
2940 | return 0; | |
2941 | } | |
2942 | break; | |
bd60018a | 2943 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
2944 | preemph_reg_value = 0x0002000; |
2945 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2946 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2947 | demph_reg_value = 0x2B404040; |
2948 | uniqtranscale_reg_value = 0x5552B83A; | |
2949 | break; | |
bd60018a | 2950 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2951 | demph_reg_value = 0x2B404848; |
2952 | uniqtranscale_reg_value = 0x5580B83A; | |
2953 | break; | |
bd60018a | 2954 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2955 | demph_reg_value = 0x2B404040; |
2956 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2957 | break; | |
2958 | default: | |
2959 | return 0; | |
2960 | } | |
2961 | break; | |
bd60018a | 2962 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
2963 | preemph_reg_value = 0x0000000; |
2964 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2965 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2966 | demph_reg_value = 0x2B305555; |
2967 | uniqtranscale_reg_value = 0x5570B83A; | |
2968 | break; | |
bd60018a | 2969 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2970 | demph_reg_value = 0x2B2B4040; |
2971 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2972 | break; | |
2973 | default: | |
2974 | return 0; | |
2975 | } | |
2976 | break; | |
bd60018a | 2977 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
2978 | preemph_reg_value = 0x0006000; |
2979 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2980 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2981 | demph_reg_value = 0x1B405555; |
2982 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2983 | break; | |
2984 | default: | |
2985 | return 0; | |
2986 | } | |
2987 | break; | |
2988 | default: | |
2989 | return 0; | |
2990 | } | |
2991 | ||
0980a60f | 2992 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
2993 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
2994 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
2995 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 2996 | uniqtranscale_reg_value); |
ab3c759a CML |
2997 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
2998 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
2999 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3000 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3001 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3002 | |
3003 | return 0; | |
3004 | } | |
3005 | ||
e4a1d846 CML |
3006 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
3007 | { | |
3008 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3009 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3010 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3011 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3012 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3013 | uint8_t train_set = intel_dp->train_set[0]; |
3014 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3015 | enum pipe pipe = intel_crtc->pipe; |
3016 | int i; | |
e4a1d846 CML |
3017 | |
3018 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3019 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3020 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3021 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3022 | deemph_reg_value = 128; |
3023 | margin_reg_value = 52; | |
3024 | break; | |
bd60018a | 3025 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3026 | deemph_reg_value = 128; |
3027 | margin_reg_value = 77; | |
3028 | break; | |
bd60018a | 3029 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3030 | deemph_reg_value = 128; |
3031 | margin_reg_value = 102; | |
3032 | break; | |
bd60018a | 3033 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3034 | deemph_reg_value = 128; |
3035 | margin_reg_value = 154; | |
3036 | /* FIXME extra to set for 1200 */ | |
3037 | break; | |
3038 | default: | |
3039 | return 0; | |
3040 | } | |
3041 | break; | |
bd60018a | 3042 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3043 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3044 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3045 | deemph_reg_value = 85; |
3046 | margin_reg_value = 78; | |
3047 | break; | |
bd60018a | 3048 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3049 | deemph_reg_value = 85; |
3050 | margin_reg_value = 116; | |
3051 | break; | |
bd60018a | 3052 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3053 | deemph_reg_value = 85; |
3054 | margin_reg_value = 154; | |
3055 | break; | |
3056 | default: | |
3057 | return 0; | |
3058 | } | |
3059 | break; | |
bd60018a | 3060 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3061 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3062 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3063 | deemph_reg_value = 64; |
3064 | margin_reg_value = 104; | |
3065 | break; | |
bd60018a | 3066 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3067 | deemph_reg_value = 64; |
3068 | margin_reg_value = 154; | |
3069 | break; | |
3070 | default: | |
3071 | return 0; | |
3072 | } | |
3073 | break; | |
bd60018a | 3074 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3075 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3076 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3077 | deemph_reg_value = 43; |
3078 | margin_reg_value = 154; | |
3079 | break; | |
3080 | default: | |
3081 | return 0; | |
3082 | } | |
3083 | break; | |
3084 | default: | |
3085 | return 0; | |
3086 | } | |
3087 | ||
3088 | mutex_lock(&dev_priv->dpio_lock); | |
3089 | ||
3090 | /* Clear calc init */ | |
1966e59e VS |
3091 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3092 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3093 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3094 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3095 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3096 | ||
3097 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3098 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3099 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3100 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3101 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3102 | |
a02ef3c7 VS |
3103 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3104 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3105 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3106 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3107 | ||
3108 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3109 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3110 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3111 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3112 | ||
e4a1d846 | 3113 | /* Program swing deemph */ |
f72df8db VS |
3114 | for (i = 0; i < 4; i++) { |
3115 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3116 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3117 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3118 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3119 | } | |
e4a1d846 CML |
3120 | |
3121 | /* Program swing margin */ | |
f72df8db VS |
3122 | for (i = 0; i < 4; i++) { |
3123 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3124 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3125 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3126 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3127 | } | |
e4a1d846 CML |
3128 | |
3129 | /* Disable unique transition scale */ | |
f72df8db VS |
3130 | for (i = 0; i < 4; i++) { |
3131 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3132 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3133 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3134 | } | |
e4a1d846 CML |
3135 | |
3136 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3137 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3138 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3139 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3140 | |
3141 | /* | |
3142 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3143 | * for ch1. Might be a typo in the doc. | |
3144 | * For now, for this unique transition scale selection, set bit | |
3145 | * 27 for ch0 and ch1. | |
3146 | */ | |
f72df8db VS |
3147 | for (i = 0; i < 4; i++) { |
3148 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3149 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3150 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3151 | } | |
e4a1d846 | 3152 | |
f72df8db VS |
3153 | for (i = 0; i < 4; i++) { |
3154 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3155 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3156 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3157 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3158 | } | |
e4a1d846 CML |
3159 | } |
3160 | ||
3161 | /* Start swing calculation */ | |
1966e59e VS |
3162 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3163 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3164 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3165 | ||
3166 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3167 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3168 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3169 | |
3170 | /* LRC Bypass */ | |
3171 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3172 | val |= DPIO_LRC_BYPASS; | |
3173 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3174 | ||
3175 | mutex_unlock(&dev_priv->dpio_lock); | |
3176 | ||
3177 | return 0; | |
3178 | } | |
3179 | ||
a4fc5ed6 | 3180 | static void |
0301b3ac JN |
3181 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3182 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3183 | { |
3184 | uint8_t v = 0; | |
3185 | uint8_t p = 0; | |
3186 | int lane; | |
1a2eb460 KP |
3187 | uint8_t voltage_max; |
3188 | uint8_t preemph_max; | |
a4fc5ed6 | 3189 | |
33a34e4e | 3190 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3191 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3192 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3193 | |
3194 | if (this_v > v) | |
3195 | v = this_v; | |
3196 | if (this_p > p) | |
3197 | p = this_p; | |
3198 | } | |
3199 | ||
1a2eb460 | 3200 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3201 | if (v >= voltage_max) |
3202 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3203 | |
1a2eb460 KP |
3204 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3205 | if (p >= preemph_max) | |
3206 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3207 | |
3208 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3209 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3210 | } |
3211 | ||
3212 | static uint32_t | |
f0a3424e | 3213 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3214 | { |
3cf2efb1 | 3215 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3216 | |
3cf2efb1 | 3217 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3218 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3219 | default: |
3220 | signal_levels |= DP_VOLTAGE_0_4; | |
3221 | break; | |
bd60018a | 3222 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3223 | signal_levels |= DP_VOLTAGE_0_6; |
3224 | break; | |
bd60018a | 3225 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3226 | signal_levels |= DP_VOLTAGE_0_8; |
3227 | break; | |
bd60018a | 3228 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3229 | signal_levels |= DP_VOLTAGE_1_2; |
3230 | break; | |
3231 | } | |
3cf2efb1 | 3232 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3233 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3234 | default: |
3235 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3236 | break; | |
bd60018a | 3237 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3238 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3239 | break; | |
bd60018a | 3240 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3241 | signal_levels |= DP_PRE_EMPHASIS_6; |
3242 | break; | |
bd60018a | 3243 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3244 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3245 | break; | |
3246 | } | |
3247 | return signal_levels; | |
3248 | } | |
3249 | ||
e3421a18 ZW |
3250 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3251 | static uint32_t | |
3252 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
3253 | { | |
3c5a62b5 YL |
3254 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3255 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3256 | switch (signal_levels) { | |
bd60018a SJ |
3257 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3258 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3259 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3260 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3261 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3262 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3263 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3264 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3265 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3266 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3267 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3268 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3269 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3270 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3271 | default: |
3c5a62b5 YL |
3272 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3273 | "0x%x\n", signal_levels); | |
3274 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3275 | } |
3276 | } | |
3277 | ||
1a2eb460 KP |
3278 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3279 | static uint32_t | |
3280 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
3281 | { | |
3282 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3283 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3284 | switch (signal_levels) { | |
bd60018a | 3285 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3286 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3287 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3288 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3289 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3290 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3291 | ||
bd60018a | 3292 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3293 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3294 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3295 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3296 | ||
bd60018a | 3297 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3298 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3299 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3300 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3301 | ||
3302 | default: | |
3303 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3304 | "0x%x\n", signal_levels); | |
3305 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3306 | } | |
3307 | } | |
3308 | ||
d6c0d722 PZ |
3309 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3310 | static uint32_t | |
f0a3424e | 3311 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3312 | { |
d6c0d722 PZ |
3313 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3314 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3315 | switch (signal_levels) { | |
bd60018a | 3316 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3317 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3318 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3319 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3320 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3321 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3322 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3323 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3324 | |
bd60018a | 3325 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3326 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3327 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3328 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3329 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3330 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3331 | |
bd60018a | 3332 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3333 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3334 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3335 | return DDI_BUF_TRANS_SELECT(8); |
7ad14a29 SJ |
3336 | |
3337 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3338 | return DDI_BUF_TRANS_SELECT(9); | |
d6c0d722 PZ |
3339 | default: |
3340 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3341 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3342 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3343 | } |
a4fc5ed6 KP |
3344 | } |
3345 | ||
f0a3424e PZ |
3346 | /* Properly updates "DP" with the correct signal levels. */ |
3347 | static void | |
3348 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3349 | { | |
3350 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3351 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3352 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3353 | uint32_t signal_levels, mask; | |
3354 | uint8_t train_set = intel_dp->train_set[0]; | |
3355 | ||
5a9d1f1a | 3356 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
f0a3424e PZ |
3357 | signal_levels = intel_hsw_signal_levels(train_set); |
3358 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
3359 | } else if (IS_CHERRYVIEW(dev)) { |
3360 | signal_levels = intel_chv_signal_levels(intel_dp); | |
3361 | mask = 0; | |
e2fa6fba P |
3362 | } else if (IS_VALLEYVIEW(dev)) { |
3363 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
3364 | mask = 0; | |
bc7d38a4 | 3365 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
3366 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
3367 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 3368 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
3369 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
3370 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
3371 | } else { | |
3372 | signal_levels = intel_gen4_signal_levels(train_set); | |
3373 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
3374 | } | |
3375 | ||
3376 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3377 | ||
3378 | *DP = (*DP & ~mask) | signal_levels; | |
3379 | } | |
3380 | ||
a4fc5ed6 | 3381 | static bool |
ea5b213a | 3382 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3383 | uint32_t *DP, |
58e10eb9 | 3384 | uint8_t dp_train_pat) |
a4fc5ed6 | 3385 | { |
174edf1f PZ |
3386 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3387 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3388 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3389 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3390 | int ret, len; | |
a4fc5ed6 | 3391 | |
7b13b58a | 3392 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3393 | |
70aff66c | 3394 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3395 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3396 | |
2cdfe6c8 JN |
3397 | buf[0] = dp_train_pat; |
3398 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3399 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3400 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3401 | len = 1; | |
3402 | } else { | |
3403 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3404 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3405 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3406 | } |
a4fc5ed6 | 3407 | |
9d1a1031 JN |
3408 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3409 | buf, len); | |
2cdfe6c8 JN |
3410 | |
3411 | return ret == len; | |
a4fc5ed6 KP |
3412 | } |
3413 | ||
70aff66c JN |
3414 | static bool |
3415 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3416 | uint8_t dp_train_pat) | |
3417 | { | |
953d22e8 | 3418 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3419 | intel_dp_set_signal_levels(intel_dp, DP); |
3420 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3421 | } | |
3422 | ||
3423 | static bool | |
3424 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3425 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3426 | { |
3427 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3428 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3429 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3430 | int ret; | |
3431 | ||
3432 | intel_get_adjust_train(intel_dp, link_status); | |
3433 | intel_dp_set_signal_levels(intel_dp, DP); | |
3434 | ||
3435 | I915_WRITE(intel_dp->output_reg, *DP); | |
3436 | POSTING_READ(intel_dp->output_reg); | |
3437 | ||
9d1a1031 JN |
3438 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3439 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3440 | |
3441 | return ret == intel_dp->lane_count; | |
3442 | } | |
3443 | ||
3ab9c637 ID |
3444 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3445 | { | |
3446 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3447 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3448 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3449 | enum port port = intel_dig_port->port; | |
3450 | uint32_t val; | |
3451 | ||
3452 | if (!HAS_DDI(dev)) | |
3453 | return; | |
3454 | ||
3455 | val = I915_READ(DP_TP_CTL(port)); | |
3456 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3457 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3458 | I915_WRITE(DP_TP_CTL(port), val); | |
3459 | ||
3460 | /* | |
3461 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3462 | * we need to set idle transmission mode is to work around a HW issue | |
3463 | * where we enable the pipe while not in idle link-training mode. | |
3464 | * In this case there is requirement to wait for a minimum number of | |
3465 | * idle patterns to be sent. | |
3466 | */ | |
3467 | if (port == PORT_A) | |
3468 | return; | |
3469 | ||
3470 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3471 | 1)) | |
3472 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3473 | } | |
3474 | ||
33a34e4e | 3475 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3476 | void |
33a34e4e | 3477 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3478 | { |
da63a9f2 | 3479 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3480 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3481 | int i; |
3482 | uint8_t voltage; | |
cdb0e95b | 3483 | int voltage_tries, loop_tries; |
ea5b213a | 3484 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3485 | uint8_t link_config[2]; |
a4fc5ed6 | 3486 | |
affa9354 | 3487 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3488 | intel_ddi_prepare_link_retrain(encoder); |
3489 | ||
3cf2efb1 | 3490 | /* Write the link configuration data */ |
6aba5b6c JN |
3491 | link_config[0] = intel_dp->link_bw; |
3492 | link_config[1] = intel_dp->lane_count; | |
3493 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3494 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3495 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
bc27b7d3 | 3496 | if (intel_dp->num_supported_rates) |
a8f3ef61 SJ |
3497 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
3498 | &intel_dp->rate_select, 1); | |
6aba5b6c JN |
3499 | |
3500 | link_config[0] = 0; | |
3501 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3502 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3503 | |
3504 | DP |= DP_PORT_EN; | |
1a2eb460 | 3505 | |
70aff66c JN |
3506 | /* clock recovery */ |
3507 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3508 | DP_TRAINING_PATTERN_1 | | |
3509 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3510 | DRM_ERROR("failed to enable link training\n"); | |
3511 | return; | |
3512 | } | |
3513 | ||
a4fc5ed6 | 3514 | voltage = 0xff; |
cdb0e95b KP |
3515 | voltage_tries = 0; |
3516 | loop_tries = 0; | |
a4fc5ed6 | 3517 | for (;;) { |
70aff66c | 3518 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3519 | |
a7c9655f | 3520 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3521 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3522 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3523 | break; |
93f62dad | 3524 | } |
a4fc5ed6 | 3525 | |
01916270 | 3526 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3527 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3528 | break; |
3529 | } | |
3530 | ||
3531 | /* Check to see if we've tried the max voltage */ | |
3532 | for (i = 0; i < intel_dp->lane_count; i++) | |
3533 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3534 | break; |
3b4f819d | 3535 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3536 | ++loop_tries; |
3537 | if (loop_tries == 5) { | |
3def84b3 | 3538 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3539 | break; |
3540 | } | |
70aff66c JN |
3541 | intel_dp_reset_link_train(intel_dp, &DP, |
3542 | DP_TRAINING_PATTERN_1 | | |
3543 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3544 | voltage_tries = 0; |
3545 | continue; | |
3546 | } | |
a4fc5ed6 | 3547 | |
3cf2efb1 | 3548 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3549 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3550 | ++voltage_tries; |
b06fbda3 | 3551 | if (voltage_tries == 5) { |
3def84b3 | 3552 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3553 | break; |
3554 | } | |
3555 | } else | |
3556 | voltage_tries = 0; | |
3557 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3558 | |
70aff66c JN |
3559 | /* Update training set as requested by target */ |
3560 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3561 | DRM_ERROR("failed to update link training\n"); | |
3562 | break; | |
3563 | } | |
a4fc5ed6 KP |
3564 | } |
3565 | ||
33a34e4e JB |
3566 | intel_dp->DP = DP; |
3567 | } | |
3568 | ||
c19b0669 | 3569 | void |
33a34e4e JB |
3570 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3571 | { | |
33a34e4e | 3572 | bool channel_eq = false; |
37f80975 | 3573 | int tries, cr_tries; |
33a34e4e | 3574 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3575 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3576 | ||
3577 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3578 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3579 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3580 | |
a4fc5ed6 | 3581 | /* channel equalization */ |
70aff66c | 3582 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3583 | training_pattern | |
70aff66c JN |
3584 | DP_LINK_SCRAMBLING_DISABLE)) { |
3585 | DRM_ERROR("failed to start channel equalization\n"); | |
3586 | return; | |
3587 | } | |
3588 | ||
a4fc5ed6 | 3589 | tries = 0; |
37f80975 | 3590 | cr_tries = 0; |
a4fc5ed6 KP |
3591 | channel_eq = false; |
3592 | for (;;) { | |
70aff66c | 3593 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3594 | |
37f80975 JB |
3595 | if (cr_tries > 5) { |
3596 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3597 | break; |
3598 | } | |
3599 | ||
a7c9655f | 3600 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3601 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3602 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3603 | break; |
70aff66c | 3604 | } |
a4fc5ed6 | 3605 | |
37f80975 | 3606 | /* Make sure clock is still ok */ |
01916270 | 3607 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3608 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3609 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3610 | training_pattern | |
70aff66c | 3611 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3612 | cr_tries++; |
3613 | continue; | |
3614 | } | |
3615 | ||
1ffdff13 | 3616 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3617 | channel_eq = true; |
3618 | break; | |
3619 | } | |
a4fc5ed6 | 3620 | |
37f80975 JB |
3621 | /* Try 5 times, then try clock recovery if that fails */ |
3622 | if (tries > 5) { | |
37f80975 | 3623 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3624 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3625 | training_pattern | |
70aff66c | 3626 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3627 | tries = 0; |
3628 | cr_tries++; | |
3629 | continue; | |
3630 | } | |
a4fc5ed6 | 3631 | |
70aff66c JN |
3632 | /* Update training set as requested by target */ |
3633 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3634 | DRM_ERROR("failed to update link training\n"); | |
3635 | break; | |
3636 | } | |
3cf2efb1 | 3637 | ++tries; |
869184a6 | 3638 | } |
3cf2efb1 | 3639 | |
3ab9c637 ID |
3640 | intel_dp_set_idle_link_train(intel_dp); |
3641 | ||
3642 | intel_dp->DP = DP; | |
3643 | ||
d6c0d722 | 3644 | if (channel_eq) |
07f42258 | 3645 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3646 | |
3ab9c637 ID |
3647 | } |
3648 | ||
3649 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3650 | { | |
70aff66c | 3651 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3652 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3653 | } |
3654 | ||
3655 | static void | |
ea5b213a | 3656 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3657 | { |
da63a9f2 | 3658 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3659 | enum port port = intel_dig_port->port; |
da63a9f2 | 3660 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3661 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3662 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3663 | |
bc76e320 | 3664 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3665 | return; |
3666 | ||
0c33d8d7 | 3667 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3668 | return; |
3669 | ||
28c97730 | 3670 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3671 | |
bc7d38a4 | 3672 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3673 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3674 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3675 | } else { |
aad3d14d VS |
3676 | if (IS_CHERRYVIEW(dev)) |
3677 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3678 | else | |
3679 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3680 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3681 | } |
fe255d00 | 3682 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3683 | |
493a7081 | 3684 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3685 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
5bddd17f EA |
3686 | /* Hardware workaround: leaving our transcoder select |
3687 | * set to transcoder B while it's off will prevent the | |
3688 | * corresponding HDMI output on transcoder A. | |
3689 | * | |
3690 | * Combine this with another hardware workaround: | |
3691 | * transcoder select bit can only be cleared while the | |
3692 | * port is enabled. | |
3693 | */ | |
3694 | DP &= ~DP_PIPEB_SELECT; | |
3695 | I915_WRITE(intel_dp->output_reg, DP); | |
0ca09685 | 3696 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3697 | } |
3698 | ||
832afda6 | 3699 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3700 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3701 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3702 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3703 | } |
3704 | ||
26d61aad KP |
3705 | static bool |
3706 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3707 | { |
a031d709 RV |
3708 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3709 | struct drm_device *dev = dig_port->base.base.dev; | |
3710 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3711 | uint8_t rev; |
a031d709 | 3712 | |
9d1a1031 JN |
3713 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3714 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3715 | return false; /* aux transfer failed */ |
92fd8fd1 | 3716 | |
a8e98153 | 3717 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3718 | |
edb39244 AJ |
3719 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3720 | return false; /* DPCD not present */ | |
3721 | ||
2293bb5c SK |
3722 | /* Check if the panel supports PSR */ |
3723 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3724 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3725 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3726 | intel_dp->psr_dpcd, | |
3727 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3728 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3729 | dev_priv->psr.sink_support = true; | |
50003939 | 3730 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3731 | } |
50003939 JN |
3732 | } |
3733 | ||
7809a611 | 3734 | /* Training Pattern 3 support, both source and sink */ |
06ea66b6 | 3735 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
7809a611 JN |
3736 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
3737 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { | |
06ea66b6 | 3738 | intel_dp->use_tps3 = true; |
f8d8a672 | 3739 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3740 | } else |
3741 | intel_dp->use_tps3 = false; | |
3742 | ||
fc0f8e25 SJ |
3743 | /* Intermediate frequency support */ |
3744 | if (is_edp(intel_dp) && | |
3745 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3746 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
3747 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
ea2d8a42 VS |
3748 | __le16 supported_rates[DP_MAX_SUPPORTED_RATES]; |
3749 | int i; | |
3750 | ||
fc0f8e25 SJ |
3751 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
3752 | DP_SUPPORTED_LINK_RATES, | |
ea2d8a42 VS |
3753 | supported_rates, |
3754 | sizeof(supported_rates)); | |
3755 | ||
3756 | for (i = 0; i < ARRAY_SIZE(supported_rates); i++) { | |
3757 | int val = le16_to_cpu(supported_rates[i]); | |
3758 | ||
3759 | if (val == 0) | |
3760 | break; | |
3761 | ||
3762 | intel_dp->supported_rates[i] = val * 200; | |
3763 | } | |
3764 | intel_dp->num_supported_rates = i; | |
fc0f8e25 | 3765 | } |
edb39244 AJ |
3766 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3767 | DP_DWN_STRM_PORT_PRESENT)) | |
3768 | return true; /* native DP sink */ | |
3769 | ||
3770 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3771 | return true; /* no per-port downstream info */ | |
3772 | ||
9d1a1031 JN |
3773 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3774 | intel_dp->downstream_ports, | |
3775 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3776 | return false; /* downstream port status fetch failed */ |
3777 | ||
3778 | return true; | |
92fd8fd1 KP |
3779 | } |
3780 | ||
0d198328 AJ |
3781 | static void |
3782 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3783 | { | |
3784 | u8 buf[3]; | |
3785 | ||
3786 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3787 | return; | |
3788 | ||
9d1a1031 | 3789 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3790 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3791 | buf[0], buf[1], buf[2]); | |
3792 | ||
9d1a1031 | 3793 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3794 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3795 | buf[0], buf[1], buf[2]); | |
3796 | } | |
3797 | ||
0e32b39c DA |
3798 | static bool |
3799 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3800 | { | |
3801 | u8 buf[1]; | |
3802 | ||
3803 | if (!intel_dp->can_mst) | |
3804 | return false; | |
3805 | ||
3806 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3807 | return false; | |
3808 | ||
0e32b39c DA |
3809 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3810 | if (buf[0] & DP_MST_CAP) { | |
3811 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3812 | intel_dp->is_mst = true; | |
3813 | } else { | |
3814 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3815 | intel_dp->is_mst = false; | |
3816 | } | |
3817 | } | |
0e32b39c DA |
3818 | |
3819 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3820 | return intel_dp->is_mst; | |
3821 | } | |
3822 | ||
d2e216d0 RV |
3823 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3824 | { | |
3825 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3826 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3827 | struct intel_crtc *intel_crtc = | |
3828 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ad9dc91b RV |
3829 | u8 buf; |
3830 | int test_crc_count; | |
3831 | int attempts = 6; | |
d2e216d0 | 3832 | |
ad9dc91b | 3833 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3834 | return -EIO; |
d2e216d0 | 3835 | |
ad9dc91b | 3836 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
d2e216d0 RV |
3837 | return -ENOTTY; |
3838 | ||
1dda5f93 RV |
3839 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3840 | return -EIO; | |
3841 | ||
9d1a1031 | 3842 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
ce31d9f4 | 3843 | buf | DP_TEST_SINK_START) < 0) |
bda0381e | 3844 | return -EIO; |
d2e216d0 | 3845 | |
1dda5f93 | 3846 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3847 | return -EIO; |
ad9dc91b | 3848 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
d2e216d0 | 3849 | |
ad9dc91b | 3850 | do { |
1dda5f93 RV |
3851 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
3852 | DP_TEST_SINK_MISC, &buf) < 0) | |
3853 | return -EIO; | |
ad9dc91b RV |
3854 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
3855 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); | |
3856 | ||
3857 | if (attempts == 0) { | |
90bd1f46 DV |
3858 | DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n"); |
3859 | return -ETIMEDOUT; | |
ad9dc91b | 3860 | } |
d2e216d0 | 3861 | |
9d1a1031 | 3862 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
bda0381e | 3863 | return -EIO; |
d2e216d0 | 3864 | |
1dda5f93 RV |
3865 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3866 | return -EIO; | |
3867 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, | |
3868 | buf & ~DP_TEST_SINK_START) < 0) | |
3869 | return -EIO; | |
ce31d9f4 | 3870 | |
d2e216d0 RV |
3871 | return 0; |
3872 | } | |
3873 | ||
a60f0e38 JB |
3874 | static bool |
3875 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3876 | { | |
9d1a1031 JN |
3877 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3878 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3879 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3880 | } |
3881 | ||
0e32b39c DA |
3882 | static bool |
3883 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3884 | { | |
3885 | int ret; | |
3886 | ||
3887 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3888 | DP_SINK_COUNT_ESI, | |
3889 | sink_irq_vector, 14); | |
3890 | if (ret != 14) | |
3891 | return false; | |
3892 | ||
3893 | return true; | |
3894 | } | |
3895 | ||
a60f0e38 JB |
3896 | static void |
3897 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3898 | { | |
3899 | /* NAK by default */ | |
9d1a1031 | 3900 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3901 | } |
3902 | ||
0e32b39c DA |
3903 | static int |
3904 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3905 | { | |
3906 | bool bret; | |
3907 | ||
3908 | if (intel_dp->is_mst) { | |
3909 | u8 esi[16] = { 0 }; | |
3910 | int ret = 0; | |
3911 | int retry; | |
3912 | bool handled; | |
3913 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3914 | go_again: | |
3915 | if (bret == true) { | |
3916 | ||
3917 | /* check link status - esi[10] = 0x200c */ | |
3918 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3919 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3920 | intel_dp_start_link_train(intel_dp); | |
3921 | intel_dp_complete_link_train(intel_dp); | |
3922 | intel_dp_stop_link_train(intel_dp); | |
3923 | } | |
3924 | ||
6f34cc39 | 3925 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
3926 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
3927 | ||
3928 | if (handled) { | |
3929 | for (retry = 0; retry < 3; retry++) { | |
3930 | int wret; | |
3931 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3932 | DP_SINK_COUNT_ESI+1, | |
3933 | &esi[1], 3); | |
3934 | if (wret == 3) { | |
3935 | break; | |
3936 | } | |
3937 | } | |
3938 | ||
3939 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3940 | if (bret == true) { | |
6f34cc39 | 3941 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
3942 | goto go_again; |
3943 | } | |
3944 | } else | |
3945 | ret = 0; | |
3946 | ||
3947 | return ret; | |
3948 | } else { | |
3949 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3950 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3951 | intel_dp->is_mst = false; | |
3952 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3953 | /* send a hotplug event */ | |
3954 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3955 | } | |
3956 | } | |
3957 | return -EINVAL; | |
3958 | } | |
3959 | ||
a4fc5ed6 KP |
3960 | /* |
3961 | * According to DP spec | |
3962 | * 5.1.2: | |
3963 | * 1. Read DPCD | |
3964 | * 2. Configure link according to Receiver Capabilities | |
3965 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3966 | * 4. Check link status on receipt of hot-plug interrupt | |
3967 | */ | |
a5146200 | 3968 | static void |
ea5b213a | 3969 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3970 | { |
5b215bcf | 3971 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 3972 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3973 | u8 sink_irq_vector; |
93f62dad | 3974 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3975 | |
5b215bcf DA |
3976 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
3977 | ||
da63a9f2 | 3978 | if (!intel_encoder->connectors_active) |
d2b996ac | 3979 | return; |
59cd09e1 | 3980 | |
da63a9f2 | 3981 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3982 | return; |
3983 | ||
1a125d8a ID |
3984 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
3985 | return; | |
3986 | ||
92fd8fd1 | 3987 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3988 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3989 | return; |
3990 | } | |
3991 | ||
92fd8fd1 | 3992 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3993 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3994 | return; |
3995 | } | |
3996 | ||
a60f0e38 JB |
3997 | /* Try to read the source of the interrupt */ |
3998 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
3999 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4000 | /* Clear interrupt source */ | |
9d1a1031 JN |
4001 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4002 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4003 | sink_irq_vector); | |
a60f0e38 JB |
4004 | |
4005 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4006 | intel_dp_handle_test_request(intel_dp); | |
4007 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4008 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4009 | } | |
4010 | ||
1ffdff13 | 4011 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4012 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4013 | intel_encoder->base.name); |
33a34e4e JB |
4014 | intel_dp_start_link_train(intel_dp); |
4015 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4016 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4017 | } |
a4fc5ed6 | 4018 | } |
a4fc5ed6 | 4019 | |
caf9ab24 | 4020 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4021 | static enum drm_connector_status |
26d61aad | 4022 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4023 | { |
caf9ab24 | 4024 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4025 | uint8_t type; |
4026 | ||
4027 | if (!intel_dp_get_dpcd(intel_dp)) | |
4028 | return connector_status_disconnected; | |
4029 | ||
4030 | /* if there's no downstream port, we're done */ | |
4031 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4032 | return connector_status_connected; |
caf9ab24 AJ |
4033 | |
4034 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4035 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4036 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4037 | uint8_t reg; |
9d1a1031 JN |
4038 | |
4039 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4040 | ®, 1) < 0) | |
caf9ab24 | 4041 | return connector_status_unknown; |
9d1a1031 | 4042 | |
23235177 AJ |
4043 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4044 | : connector_status_disconnected; | |
caf9ab24 AJ |
4045 | } |
4046 | ||
4047 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4048 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4049 | return connector_status_connected; |
caf9ab24 AJ |
4050 | |
4051 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4052 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4053 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4054 | if (type == DP_DS_PORT_TYPE_VGA || | |
4055 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4056 | return connector_status_unknown; | |
4057 | } else { | |
4058 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4059 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4060 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4061 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4062 | return connector_status_unknown; | |
4063 | } | |
caf9ab24 AJ |
4064 | |
4065 | /* Anything else is out of spec, warn and ignore */ | |
4066 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4067 | return connector_status_disconnected; |
71ba9000 AJ |
4068 | } |
4069 | ||
d410b56d CW |
4070 | static enum drm_connector_status |
4071 | edp_detect(struct intel_dp *intel_dp) | |
4072 | { | |
4073 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4074 | enum drm_connector_status status; | |
4075 | ||
4076 | status = intel_panel_detect(dev); | |
4077 | if (status == connector_status_unknown) | |
4078 | status = connector_status_connected; | |
4079 | ||
4080 | return status; | |
4081 | } | |
4082 | ||
5eb08b69 | 4083 | static enum drm_connector_status |
a9756bb5 | 4084 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4085 | { |
30add22d | 4086 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4087 | struct drm_i915_private *dev_priv = dev->dev_private; |
4088 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4089 | |
1b469639 DL |
4090 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4091 | return connector_status_disconnected; | |
4092 | ||
26d61aad | 4093 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4094 | } |
4095 | ||
2a592bec DA |
4096 | static int g4x_digital_port_connected(struct drm_device *dev, |
4097 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4098 | { |
a4fc5ed6 | 4099 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4100 | uint32_t bit; |
5eb08b69 | 4101 | |
232a6ee9 TP |
4102 | if (IS_VALLEYVIEW(dev)) { |
4103 | switch (intel_dig_port->port) { | |
4104 | case PORT_B: | |
4105 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4106 | break; | |
4107 | case PORT_C: | |
4108 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4109 | break; | |
4110 | case PORT_D: | |
4111 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4112 | break; | |
4113 | default: | |
2a592bec | 4114 | return -EINVAL; |
232a6ee9 TP |
4115 | } |
4116 | } else { | |
4117 | switch (intel_dig_port->port) { | |
4118 | case PORT_B: | |
4119 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4120 | break; | |
4121 | case PORT_C: | |
4122 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4123 | break; | |
4124 | case PORT_D: | |
4125 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4126 | break; | |
4127 | default: | |
2a592bec | 4128 | return -EINVAL; |
232a6ee9 | 4129 | } |
a4fc5ed6 KP |
4130 | } |
4131 | ||
10f76a38 | 4132 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4133 | return 0; |
4134 | return 1; | |
4135 | } | |
4136 | ||
4137 | static enum drm_connector_status | |
4138 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4139 | { | |
4140 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4141 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4142 | int ret; | |
4143 | ||
4144 | /* Can't disconnect eDP, but you can close the lid... */ | |
4145 | if (is_edp(intel_dp)) { | |
4146 | enum drm_connector_status status; | |
4147 | ||
4148 | status = intel_panel_detect(dev); | |
4149 | if (status == connector_status_unknown) | |
4150 | status = connector_status_connected; | |
4151 | return status; | |
4152 | } | |
4153 | ||
4154 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4155 | if (ret == -EINVAL) | |
4156 | return connector_status_unknown; | |
4157 | else if (ret == 0) | |
a4fc5ed6 KP |
4158 | return connector_status_disconnected; |
4159 | ||
26d61aad | 4160 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4161 | } |
4162 | ||
8c241fef | 4163 | static struct edid * |
beb60608 | 4164 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4165 | { |
beb60608 | 4166 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4167 | |
9cd300e0 JN |
4168 | /* use cached edid if we have one */ |
4169 | if (intel_connector->edid) { | |
9cd300e0 JN |
4170 | /* invalid edid */ |
4171 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4172 | return NULL; |
4173 | ||
55e9edeb | 4174 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4175 | } else |
4176 | return drm_get_edid(&intel_connector->base, | |
4177 | &intel_dp->aux.ddc); | |
4178 | } | |
8c241fef | 4179 | |
beb60608 CW |
4180 | static void |
4181 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4182 | { | |
4183 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4184 | struct edid *edid; | |
8c241fef | 4185 | |
beb60608 CW |
4186 | edid = intel_dp_get_edid(intel_dp); |
4187 | intel_connector->detect_edid = edid; | |
4188 | ||
4189 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4190 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4191 | else | |
4192 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4193 | } |
4194 | ||
beb60608 CW |
4195 | static void |
4196 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4197 | { |
beb60608 | 4198 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4199 | |
beb60608 CW |
4200 | kfree(intel_connector->detect_edid); |
4201 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4202 | |
beb60608 CW |
4203 | intel_dp->has_audio = false; |
4204 | } | |
d6f24d0f | 4205 | |
beb60608 CW |
4206 | static enum intel_display_power_domain |
4207 | intel_dp_power_get(struct intel_dp *dp) | |
4208 | { | |
4209 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4210 | enum intel_display_power_domain power_domain; | |
4211 | ||
4212 | power_domain = intel_display_port_power_domain(encoder); | |
4213 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4214 | ||
4215 | return power_domain; | |
4216 | } | |
d6f24d0f | 4217 | |
beb60608 CW |
4218 | static void |
4219 | intel_dp_power_put(struct intel_dp *dp, | |
4220 | enum intel_display_power_domain power_domain) | |
4221 | { | |
4222 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4223 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4224 | } |
4225 | ||
a9756bb5 ZW |
4226 | static enum drm_connector_status |
4227 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4228 | { | |
4229 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4230 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4231 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4232 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4233 | enum drm_connector_status status; |
671dedd2 | 4234 | enum intel_display_power_domain power_domain; |
0e32b39c | 4235 | bool ret; |
a9756bb5 | 4236 | |
164c8598 | 4237 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4238 | connector->base.id, connector->name); |
beb60608 | 4239 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4240 | |
0e32b39c DA |
4241 | if (intel_dp->is_mst) { |
4242 | /* MST devices are disconnected from a monitor POV */ | |
4243 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4244 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4245 | return connector_status_disconnected; |
0e32b39c DA |
4246 | } |
4247 | ||
beb60608 | 4248 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4249 | |
d410b56d CW |
4250 | /* Can't disconnect eDP, but you can close the lid... */ |
4251 | if (is_edp(intel_dp)) | |
4252 | status = edp_detect(intel_dp); | |
4253 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4254 | status = ironlake_dp_detect(intel_dp); |
4255 | else | |
4256 | status = g4x_dp_detect(intel_dp); | |
4257 | if (status != connector_status_connected) | |
c8c8fb33 | 4258 | goto out; |
a9756bb5 | 4259 | |
0d198328 AJ |
4260 | intel_dp_probe_oui(intel_dp); |
4261 | ||
0e32b39c DA |
4262 | ret = intel_dp_probe_mst(intel_dp); |
4263 | if (ret) { | |
4264 | /* if we are in MST mode then this connector | |
4265 | won't appear connected or have anything with EDID on it */ | |
4266 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4267 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4268 | status = connector_status_disconnected; | |
4269 | goto out; | |
4270 | } | |
4271 | ||
beb60608 | 4272 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4273 | |
d63885da PZ |
4274 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4275 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4276 | status = connector_status_connected; |
4277 | ||
4278 | out: | |
beb60608 | 4279 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4280 | return status; |
a4fc5ed6 KP |
4281 | } |
4282 | ||
beb60608 CW |
4283 | static void |
4284 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4285 | { |
df0e9248 | 4286 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4287 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4288 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4289 | |
beb60608 CW |
4290 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4291 | connector->base.id, connector->name); | |
4292 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4293 | |
beb60608 CW |
4294 | if (connector->status != connector_status_connected) |
4295 | return; | |
671dedd2 | 4296 | |
beb60608 CW |
4297 | power_domain = intel_dp_power_get(intel_dp); |
4298 | ||
4299 | intel_dp_set_edid(intel_dp); | |
4300 | ||
4301 | intel_dp_power_put(intel_dp, power_domain); | |
4302 | ||
4303 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4304 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4305 | } | |
4306 | ||
4307 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4308 | { | |
4309 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4310 | struct edid *edid; | |
4311 | ||
4312 | edid = intel_connector->detect_edid; | |
4313 | if (edid) { | |
4314 | int ret = intel_connector_update_modes(connector, edid); | |
4315 | if (ret) | |
4316 | return ret; | |
4317 | } | |
32f9d658 | 4318 | |
f8779fda | 4319 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4320 | if (is_edp(intel_attached_dp(connector)) && |
4321 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4322 | struct drm_display_mode *mode; |
beb60608 CW |
4323 | |
4324 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4325 | intel_connector->panel.fixed_mode); |
f8779fda | 4326 | if (mode) { |
32f9d658 ZW |
4327 | drm_mode_probed_add(connector, mode); |
4328 | return 1; | |
4329 | } | |
4330 | } | |
beb60608 | 4331 | |
32f9d658 | 4332 | return 0; |
a4fc5ed6 KP |
4333 | } |
4334 | ||
1aad7ac0 CW |
4335 | static bool |
4336 | intel_dp_detect_audio(struct drm_connector *connector) | |
4337 | { | |
1aad7ac0 | 4338 | bool has_audio = false; |
beb60608 | 4339 | struct edid *edid; |
1aad7ac0 | 4340 | |
beb60608 CW |
4341 | edid = to_intel_connector(connector)->detect_edid; |
4342 | if (edid) | |
1aad7ac0 | 4343 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4344 | |
1aad7ac0 CW |
4345 | return has_audio; |
4346 | } | |
4347 | ||
f684960e CW |
4348 | static int |
4349 | intel_dp_set_property(struct drm_connector *connector, | |
4350 | struct drm_property *property, | |
4351 | uint64_t val) | |
4352 | { | |
e953fd7b | 4353 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4354 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4355 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4356 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4357 | int ret; |
4358 | ||
662595df | 4359 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4360 | if (ret) |
4361 | return ret; | |
4362 | ||
3f43c48d | 4363 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4364 | int i = val; |
4365 | bool has_audio; | |
4366 | ||
4367 | if (i == intel_dp->force_audio) | |
f684960e CW |
4368 | return 0; |
4369 | ||
1aad7ac0 | 4370 | intel_dp->force_audio = i; |
f684960e | 4371 | |
c3e5f67b | 4372 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4373 | has_audio = intel_dp_detect_audio(connector); |
4374 | else | |
c3e5f67b | 4375 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4376 | |
4377 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4378 | return 0; |
4379 | ||
1aad7ac0 | 4380 | intel_dp->has_audio = has_audio; |
f684960e CW |
4381 | goto done; |
4382 | } | |
4383 | ||
e953fd7b | 4384 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4385 | bool old_auto = intel_dp->color_range_auto; |
4386 | uint32_t old_range = intel_dp->color_range; | |
4387 | ||
55bc60db VS |
4388 | switch (val) { |
4389 | case INTEL_BROADCAST_RGB_AUTO: | |
4390 | intel_dp->color_range_auto = true; | |
4391 | break; | |
4392 | case INTEL_BROADCAST_RGB_FULL: | |
4393 | intel_dp->color_range_auto = false; | |
4394 | intel_dp->color_range = 0; | |
4395 | break; | |
4396 | case INTEL_BROADCAST_RGB_LIMITED: | |
4397 | intel_dp->color_range_auto = false; | |
4398 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4399 | break; | |
4400 | default: | |
4401 | return -EINVAL; | |
4402 | } | |
ae4edb80 DV |
4403 | |
4404 | if (old_auto == intel_dp->color_range_auto && | |
4405 | old_range == intel_dp->color_range) | |
4406 | return 0; | |
4407 | ||
e953fd7b CW |
4408 | goto done; |
4409 | } | |
4410 | ||
53b41837 YN |
4411 | if (is_edp(intel_dp) && |
4412 | property == connector->dev->mode_config.scaling_mode_property) { | |
4413 | if (val == DRM_MODE_SCALE_NONE) { | |
4414 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4415 | return -EINVAL; | |
4416 | } | |
4417 | ||
4418 | if (intel_connector->panel.fitting_mode == val) { | |
4419 | /* the eDP scaling property is not changed */ | |
4420 | return 0; | |
4421 | } | |
4422 | intel_connector->panel.fitting_mode = val; | |
4423 | ||
4424 | goto done; | |
4425 | } | |
4426 | ||
f684960e CW |
4427 | return -EINVAL; |
4428 | ||
4429 | done: | |
c0c36b94 CW |
4430 | if (intel_encoder->base.crtc) |
4431 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4432 | |
4433 | return 0; | |
4434 | } | |
4435 | ||
a4fc5ed6 | 4436 | static void |
73845adf | 4437 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4438 | { |
1d508706 | 4439 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4440 | |
10e972d3 | 4441 | kfree(intel_connector->detect_edid); |
beb60608 | 4442 | |
9cd300e0 JN |
4443 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4444 | kfree(intel_connector->edid); | |
4445 | ||
acd8db10 PZ |
4446 | /* Can't call is_edp() since the encoder may have been destroyed |
4447 | * already. */ | |
4448 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4449 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4450 | |
a4fc5ed6 | 4451 | drm_connector_cleanup(connector); |
55f78c43 | 4452 | kfree(connector); |
a4fc5ed6 KP |
4453 | } |
4454 | ||
00c09d70 | 4455 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4456 | { |
da63a9f2 PZ |
4457 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4458 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4459 | |
4f71d0cb | 4460 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4461 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4462 | if (is_edp(intel_dp)) { |
4463 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4464 | /* |
4465 | * vdd might still be enabled do to the delayed vdd off. | |
4466 | * Make sure vdd is actually turned off here. | |
4467 | */ | |
773538e8 | 4468 | pps_lock(intel_dp); |
4be73780 | 4469 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4470 | pps_unlock(intel_dp); |
4471 | ||
01527b31 CT |
4472 | if (intel_dp->edp_notifier.notifier_call) { |
4473 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4474 | intel_dp->edp_notifier.notifier_call = NULL; | |
4475 | } | |
bd943159 | 4476 | } |
c8bd0e49 | 4477 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4478 | kfree(intel_dig_port); |
24d05927 DV |
4479 | } |
4480 | ||
07f9cd0b ID |
4481 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4482 | { | |
4483 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4484 | ||
4485 | if (!is_edp(intel_dp)) | |
4486 | return; | |
4487 | ||
951468f3 VS |
4488 | /* |
4489 | * vdd might still be enabled do to the delayed vdd off. | |
4490 | * Make sure vdd is actually turned off here. | |
4491 | */ | |
afa4e53a | 4492 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4493 | pps_lock(intel_dp); |
07f9cd0b | 4494 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4495 | pps_unlock(intel_dp); |
07f9cd0b ID |
4496 | } |
4497 | ||
49e6bc51 VS |
4498 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4499 | { | |
4500 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4501 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4502 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4503 | enum intel_display_power_domain power_domain; | |
4504 | ||
4505 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4506 | ||
4507 | if (!edp_have_panel_vdd(intel_dp)) | |
4508 | return; | |
4509 | ||
4510 | /* | |
4511 | * The VDD bit needs a power domain reference, so if the bit is | |
4512 | * already enabled when we boot or resume, grab this reference and | |
4513 | * schedule a vdd off, so we don't hold on to the reference | |
4514 | * indefinitely. | |
4515 | */ | |
4516 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4517 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
4518 | intel_display_power_get(dev_priv, power_domain); | |
4519 | ||
4520 | edp_panel_vdd_schedule_off(intel_dp); | |
4521 | } | |
4522 | ||
6d93c0c4 ID |
4523 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4524 | { | |
49e6bc51 VS |
4525 | struct intel_dp *intel_dp; |
4526 | ||
4527 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
4528 | return; | |
4529 | ||
4530 | intel_dp = enc_to_intel_dp(encoder); | |
4531 | ||
4532 | pps_lock(intel_dp); | |
4533 | ||
4534 | /* | |
4535 | * Read out the current power sequencer assignment, | |
4536 | * in case the BIOS did something with it. | |
4537 | */ | |
4538 | if (IS_VALLEYVIEW(encoder->dev)) | |
4539 | vlv_initial_power_sequencer_setup(intel_dp); | |
4540 | ||
4541 | intel_edp_panel_vdd_sanitize(intel_dp); | |
4542 | ||
4543 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4544 | } |
4545 | ||
a4fc5ed6 | 4546 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4547 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4548 | .detect = intel_dp_detect, |
beb60608 | 4549 | .force = intel_dp_force, |
a4fc5ed6 | 4550 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4551 | .set_property = intel_dp_set_property, |
2545e4a6 | 4552 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 4553 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4554 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
a4fc5ed6 KP |
4555 | }; |
4556 | ||
4557 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4558 | .get_modes = intel_dp_get_modes, | |
4559 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4560 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4561 | }; |
4562 | ||
a4fc5ed6 | 4563 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4564 | .reset = intel_dp_encoder_reset, |
24d05927 | 4565 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4566 | }; |
4567 | ||
0e32b39c | 4568 | void |
21d40d37 | 4569 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4570 | { |
0e32b39c | 4571 | return; |
c8110e52 | 4572 | } |
6207937d | 4573 | |
b2c5c181 | 4574 | enum irqreturn |
13cf5504 DA |
4575 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4576 | { | |
4577 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4578 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4579 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4580 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 4581 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4582 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4583 | |
0e32b39c DA |
4584 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4585 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4586 | |
7a7f84cc VS |
4587 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4588 | /* | |
4589 | * vdd off can generate a long pulse on eDP which | |
4590 | * would require vdd on to handle it, and thus we | |
4591 | * would end up in an endless cycle of | |
4592 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4593 | */ | |
4594 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4595 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4596 | return IRQ_HANDLED; |
7a7f84cc VS |
4597 | } |
4598 | ||
26fbb774 VS |
4599 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4600 | port_name(intel_dig_port->port), | |
0e32b39c | 4601 | long_hpd ? "long" : "short"); |
13cf5504 | 4602 | |
1c767b33 ID |
4603 | power_domain = intel_display_port_power_domain(intel_encoder); |
4604 | intel_display_power_get(dev_priv, power_domain); | |
4605 | ||
0e32b39c | 4606 | if (long_hpd) { |
2a592bec DA |
4607 | |
4608 | if (HAS_PCH_SPLIT(dev)) { | |
4609 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4610 | goto mst_fail; | |
4611 | } else { | |
4612 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4613 | goto mst_fail; | |
4614 | } | |
0e32b39c DA |
4615 | |
4616 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4617 | goto mst_fail; | |
4618 | } | |
4619 | ||
4620 | intel_dp_probe_oui(intel_dp); | |
4621 | ||
4622 | if (!intel_dp_probe_mst(intel_dp)) | |
4623 | goto mst_fail; | |
4624 | ||
4625 | } else { | |
4626 | if (intel_dp->is_mst) { | |
1c767b33 | 4627 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4628 | goto mst_fail; |
4629 | } | |
4630 | ||
4631 | if (!intel_dp->is_mst) { | |
4632 | /* | |
4633 | * we'll check the link status via the normal hot plug path later - | |
4634 | * but for short hpds we should check it now | |
4635 | */ | |
5b215bcf | 4636 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4637 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4638 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4639 | } |
4640 | } | |
b2c5c181 DV |
4641 | |
4642 | ret = IRQ_HANDLED; | |
4643 | ||
1c767b33 | 4644 | goto put_power; |
0e32b39c DA |
4645 | mst_fail: |
4646 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4647 | if (intel_dp->is_mst) { | |
4648 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4649 | intel_dp->is_mst = false; | |
4650 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4651 | } | |
1c767b33 ID |
4652 | put_power: |
4653 | intel_display_power_put(dev_priv, power_domain); | |
4654 | ||
4655 | return ret; | |
13cf5504 DA |
4656 | } |
4657 | ||
e3421a18 ZW |
4658 | /* Return which DP Port should be selected for Transcoder DP control */ |
4659 | int | |
0206e353 | 4660 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4661 | { |
4662 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4663 | struct intel_encoder *intel_encoder; |
4664 | struct intel_dp *intel_dp; | |
e3421a18 | 4665 | |
fa90ecef PZ |
4666 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4667 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4668 | |
fa90ecef PZ |
4669 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4670 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4671 | return intel_dp->output_reg; |
e3421a18 | 4672 | } |
ea5b213a | 4673 | |
e3421a18 ZW |
4674 | return -1; |
4675 | } | |
4676 | ||
36e83a18 | 4677 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4678 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4679 | { |
4680 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4681 | union child_device_config *p_child; |
36e83a18 | 4682 | int i; |
5d8a7752 VS |
4683 | static const short port_mapping[] = { |
4684 | [PORT_B] = PORT_IDPB, | |
4685 | [PORT_C] = PORT_IDPC, | |
4686 | [PORT_D] = PORT_IDPD, | |
4687 | }; | |
36e83a18 | 4688 | |
3b32a35b VS |
4689 | if (port == PORT_A) |
4690 | return true; | |
4691 | ||
41aa3448 | 4692 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4693 | return false; |
4694 | ||
41aa3448 RV |
4695 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4696 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4697 | |
5d8a7752 | 4698 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4699 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4700 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4701 | return true; |
4702 | } | |
4703 | return false; | |
4704 | } | |
4705 | ||
0e32b39c | 4706 | void |
f684960e CW |
4707 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4708 | { | |
53b41837 YN |
4709 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4710 | ||
3f43c48d | 4711 | intel_attach_force_audio_property(connector); |
e953fd7b | 4712 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4713 | intel_dp->color_range_auto = true; |
53b41837 YN |
4714 | |
4715 | if (is_edp(intel_dp)) { | |
4716 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4717 | drm_object_attach_property( |
4718 | &connector->base, | |
53b41837 | 4719 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4720 | DRM_MODE_SCALE_ASPECT); |
4721 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4722 | } |
f684960e CW |
4723 | } |
4724 | ||
dada1a9f ID |
4725 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4726 | { | |
4727 | intel_dp->last_power_cycle = jiffies; | |
4728 | intel_dp->last_power_on = jiffies; | |
4729 | intel_dp->last_backlight_off = jiffies; | |
4730 | } | |
4731 | ||
67a54566 DV |
4732 | static void |
4733 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 4734 | struct intel_dp *intel_dp) |
67a54566 DV |
4735 | { |
4736 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
4737 | struct edp_power_seq cur, vbt, spec, |
4738 | *final = &intel_dp->pps_delays; | |
67a54566 | 4739 | u32 pp_on, pp_off, pp_div, pp; |
bf13e81b | 4740 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4741 | |
e39b999a VS |
4742 | lockdep_assert_held(&dev_priv->pps_mutex); |
4743 | ||
81ddbc69 VS |
4744 | /* already initialized? */ |
4745 | if (final->t11_t12 != 0) | |
4746 | return; | |
4747 | ||
453c5420 | 4748 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4749 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4750 | pp_on_reg = PCH_PP_ON_DELAYS; |
4751 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4752 | pp_div_reg = PCH_PP_DIVISOR; | |
4753 | } else { | |
bf13e81b JN |
4754 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4755 | ||
4756 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4757 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4758 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4759 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4760 | } |
67a54566 DV |
4761 | |
4762 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4763 | * the very first thing. */ | |
453c5420 | 4764 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4765 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4766 | |
453c5420 JB |
4767 | pp_on = I915_READ(pp_on_reg); |
4768 | pp_off = I915_READ(pp_off_reg); | |
4769 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4770 | |
4771 | /* Pull timing values out of registers */ | |
4772 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4773 | PANEL_POWER_UP_DELAY_SHIFT; | |
4774 | ||
4775 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4776 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4777 | ||
4778 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4779 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4780 | ||
4781 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4782 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4783 | ||
4784 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4785 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4786 | ||
4787 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4788 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4789 | ||
41aa3448 | 4790 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4791 | |
4792 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4793 | * our hw here, which are all in 100usec. */ | |
4794 | spec.t1_t3 = 210 * 10; | |
4795 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4796 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4797 | spec.t10 = 500 * 10; | |
4798 | /* This one is special and actually in units of 100ms, but zero | |
4799 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4800 | * table multiplies it with 1000 to make it in units of 100usec, | |
4801 | * too. */ | |
4802 | spec.t11_t12 = (510 + 100) * 10; | |
4803 | ||
4804 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4805 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4806 | ||
4807 | /* Use the max of the register settings and vbt. If both are | |
4808 | * unset, fall back to the spec limits. */ | |
36b5f425 | 4809 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
4810 | spec.field : \ |
4811 | max(cur.field, vbt.field)) | |
4812 | assign_final(t1_t3); | |
4813 | assign_final(t8); | |
4814 | assign_final(t9); | |
4815 | assign_final(t10); | |
4816 | assign_final(t11_t12); | |
4817 | #undef assign_final | |
4818 | ||
36b5f425 | 4819 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
4820 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
4821 | intel_dp->backlight_on_delay = get_delay(t8); | |
4822 | intel_dp->backlight_off_delay = get_delay(t9); | |
4823 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4824 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4825 | #undef get_delay | |
4826 | ||
f30d26e4 JN |
4827 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4828 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4829 | intel_dp->panel_power_cycle_delay); | |
4830 | ||
4831 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4832 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
4833 | } |
4834 | ||
4835 | static void | |
4836 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 4837 | struct intel_dp *intel_dp) |
f30d26e4 JN |
4838 | { |
4839 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4840 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4841 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4842 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 4843 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 4844 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 4845 | |
e39b999a | 4846 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
4847 | |
4848 | if (HAS_PCH_SPLIT(dev)) { | |
4849 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4850 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4851 | pp_div_reg = PCH_PP_DIVISOR; | |
4852 | } else { | |
bf13e81b JN |
4853 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4854 | ||
4855 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4856 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4857 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4858 | } |
4859 | ||
b2f19d1a PZ |
4860 | /* |
4861 | * And finally store the new values in the power sequencer. The | |
4862 | * backlight delays are set to 1 because we do manual waits on them. For | |
4863 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4864 | * we'll end up waiting for the backlight off delay twice: once when we | |
4865 | * do the manual sleep, and once when we disable the panel and wait for | |
4866 | * the PP_STATUS bit to become zero. | |
4867 | */ | |
f30d26e4 | 4868 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4869 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4870 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4871 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4872 | /* Compute the divisor for the pp clock, simply match the Bspec |
4873 | * formula. */ | |
453c5420 | 4874 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4875 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4876 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4877 | ||
4878 | /* Haswell doesn't have any port selection bits for the panel | |
4879 | * power sequencer any more. */ | |
bc7d38a4 | 4880 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 4881 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 4882 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 4883 | if (port == PORT_A) |
a24c144c | 4884 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4885 | else |
a24c144c | 4886 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4887 | } |
4888 | ||
453c5420 JB |
4889 | pp_on |= port_sel; |
4890 | ||
4891 | I915_WRITE(pp_on_reg, pp_on); | |
4892 | I915_WRITE(pp_off_reg, pp_off); | |
4893 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4894 | |
67a54566 | 4895 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4896 | I915_READ(pp_on_reg), |
4897 | I915_READ(pp_off_reg), | |
4898 | I915_READ(pp_div_reg)); | |
f684960e CW |
4899 | } |
4900 | ||
b33a2815 VK |
4901 | /** |
4902 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
4903 | * @dev: DRM device | |
4904 | * @refresh_rate: RR to be programmed | |
4905 | * | |
4906 | * This function gets called when refresh rate (RR) has to be changed from | |
4907 | * one frequency to another. Switches can be between high and low RR | |
4908 | * supported by the panel or to any other RR based on media playback (in | |
4909 | * this case, RR value needs to be passed from user space). | |
4910 | * | |
4911 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
4912 | */ | |
96178eeb | 4913 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
4914 | { |
4915 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4916 | struct intel_encoder *encoder; | |
96178eeb VK |
4917 | struct intel_digital_port *dig_port = NULL; |
4918 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 4919 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 4920 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 4921 | u32 reg, val; |
96178eeb | 4922 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
4923 | |
4924 | if (refresh_rate <= 0) { | |
4925 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4926 | return; | |
4927 | } | |
4928 | ||
96178eeb VK |
4929 | if (intel_dp == NULL) { |
4930 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
4931 | return; |
4932 | } | |
4933 | ||
1fcc9d1c | 4934 | /* |
e4d59f6b RV |
4935 | * FIXME: This needs proper synchronization with psr state for some |
4936 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 4937 | */ |
439d7ac0 | 4938 | |
96178eeb VK |
4939 | dig_port = dp_to_dig_port(intel_dp); |
4940 | encoder = &dig_port->base; | |
439d7ac0 PB |
4941 | intel_crtc = encoder->new_crtc; |
4942 | ||
4943 | if (!intel_crtc) { | |
4944 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4945 | return; | |
4946 | } | |
4947 | ||
6e3c9717 | 4948 | config = intel_crtc->config; |
439d7ac0 | 4949 | |
96178eeb | 4950 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
4951 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
4952 | return; | |
4953 | } | |
4954 | ||
96178eeb VK |
4955 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
4956 | refresh_rate) | |
439d7ac0 PB |
4957 | index = DRRS_LOW_RR; |
4958 | ||
96178eeb | 4959 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
4960 | DRM_DEBUG_KMS( |
4961 | "DRRS requested for previously set RR...ignoring\n"); | |
4962 | return; | |
4963 | } | |
4964 | ||
4965 | if (!intel_crtc->active) { | |
4966 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4967 | return; | |
4968 | } | |
4969 | ||
44395bfe | 4970 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
4971 | switch (index) { |
4972 | case DRRS_HIGH_RR: | |
4973 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
4974 | break; | |
4975 | case DRRS_LOW_RR: | |
4976 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
4977 | break; | |
4978 | case DRRS_MAX_RR: | |
4979 | default: | |
4980 | DRM_ERROR("Unsupported refreshrate type\n"); | |
4981 | } | |
4982 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 4983 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 4984 | val = I915_READ(reg); |
a4c30b1d | 4985 | |
439d7ac0 | 4986 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
4987 | if (IS_VALLEYVIEW(dev)) |
4988 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
4989 | else | |
4990 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 4991 | } else { |
6fa7aec1 VK |
4992 | if (IS_VALLEYVIEW(dev)) |
4993 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
4994 | else | |
4995 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
4996 | } |
4997 | I915_WRITE(reg, val); | |
4998 | } | |
4999 | ||
4e9ac947 VK |
5000 | dev_priv->drrs.refresh_rate_type = index; |
5001 | ||
5002 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5003 | } | |
5004 | ||
b33a2815 VK |
5005 | /** |
5006 | * intel_edp_drrs_enable - init drrs struct if supported | |
5007 | * @intel_dp: DP struct | |
5008 | * | |
5009 | * Initializes frontbuffer_bits and drrs.dp | |
5010 | */ | |
c395578e VK |
5011 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5012 | { | |
5013 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5014 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5015 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5016 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5017 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5018 | ||
5019 | if (!intel_crtc->config->has_drrs) { | |
5020 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5021 | return; | |
5022 | } | |
5023 | ||
5024 | mutex_lock(&dev_priv->drrs.mutex); | |
5025 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5026 | DRM_ERROR("DRRS already enabled\n"); | |
5027 | goto unlock; | |
5028 | } | |
5029 | ||
5030 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5031 | ||
5032 | dev_priv->drrs.dp = intel_dp; | |
5033 | ||
5034 | unlock: | |
5035 | mutex_unlock(&dev_priv->drrs.mutex); | |
5036 | } | |
5037 | ||
b33a2815 VK |
5038 | /** |
5039 | * intel_edp_drrs_disable - Disable DRRS | |
5040 | * @intel_dp: DP struct | |
5041 | * | |
5042 | */ | |
c395578e VK |
5043 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5044 | { | |
5045 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5046 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5047 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5048 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5049 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5050 | ||
5051 | if (!intel_crtc->config->has_drrs) | |
5052 | return; | |
5053 | ||
5054 | mutex_lock(&dev_priv->drrs.mutex); | |
5055 | if (!dev_priv->drrs.dp) { | |
5056 | mutex_unlock(&dev_priv->drrs.mutex); | |
5057 | return; | |
5058 | } | |
5059 | ||
5060 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5061 | intel_dp_set_drrs_state(dev_priv->dev, | |
5062 | intel_dp->attached_connector->panel. | |
5063 | fixed_mode->vrefresh); | |
5064 | ||
5065 | dev_priv->drrs.dp = NULL; | |
5066 | mutex_unlock(&dev_priv->drrs.mutex); | |
5067 | ||
5068 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5069 | } | |
5070 | ||
4e9ac947 VK |
5071 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5072 | { | |
5073 | struct drm_i915_private *dev_priv = | |
5074 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5075 | struct intel_dp *intel_dp; | |
5076 | ||
5077 | mutex_lock(&dev_priv->drrs.mutex); | |
5078 | ||
5079 | intel_dp = dev_priv->drrs.dp; | |
5080 | ||
5081 | if (!intel_dp) | |
5082 | goto unlock; | |
5083 | ||
439d7ac0 | 5084 | /* |
4e9ac947 VK |
5085 | * The delayed work can race with an invalidate hence we need to |
5086 | * recheck. | |
439d7ac0 PB |
5087 | */ |
5088 | ||
4e9ac947 VK |
5089 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5090 | goto unlock; | |
439d7ac0 | 5091 | |
4e9ac947 VK |
5092 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5093 | intel_dp_set_drrs_state(dev_priv->dev, | |
5094 | intel_dp->attached_connector->panel. | |
5095 | downclock_mode->vrefresh); | |
439d7ac0 | 5096 | |
4e9ac947 | 5097 | unlock: |
439d7ac0 | 5098 | |
4e9ac947 | 5099 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5100 | } |
5101 | ||
b33a2815 VK |
5102 | /** |
5103 | * intel_edp_drrs_invalidate - Invalidate DRRS | |
5104 | * @dev: DRM device | |
5105 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5106 | * | |
5107 | * When there is a disturbance on screen (due to cursor movement/time | |
5108 | * update etc), DRRS needs to be invalidated, i.e. need to switch to | |
5109 | * high RR. | |
5110 | * | |
5111 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5112 | */ | |
a93fad0f VK |
5113 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5114 | unsigned frontbuffer_bits) | |
5115 | { | |
5116 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5117 | struct drm_crtc *crtc; | |
5118 | enum pipe pipe; | |
5119 | ||
5120 | if (!dev_priv->drrs.dp) | |
5121 | return; | |
5122 | ||
3954e733 R |
5123 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5124 | ||
a93fad0f VK |
5125 | mutex_lock(&dev_priv->drrs.mutex); |
5126 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5127 | pipe = to_intel_crtc(crtc)->pipe; | |
5128 | ||
5129 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) { | |
a93fad0f VK |
5130 | intel_dp_set_drrs_state(dev_priv->dev, |
5131 | dev_priv->drrs.dp->attached_connector->panel. | |
5132 | fixed_mode->vrefresh); | |
5133 | } | |
5134 | ||
5135 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
5136 | ||
5137 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5138 | mutex_unlock(&dev_priv->drrs.mutex); | |
5139 | } | |
5140 | ||
b33a2815 VK |
5141 | /** |
5142 | * intel_edp_drrs_flush - Flush DRRS | |
5143 | * @dev: DRM device | |
5144 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5145 | * | |
5146 | * When there is no movement on screen, DRRS work can be scheduled. | |
5147 | * This DRRS work is responsible for setting relevant registers after a | |
5148 | * timeout of 1 second. | |
5149 | * | |
5150 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5151 | */ | |
a93fad0f VK |
5152 | void intel_edp_drrs_flush(struct drm_device *dev, |
5153 | unsigned frontbuffer_bits) | |
5154 | { | |
5155 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5156 | struct drm_crtc *crtc; | |
5157 | enum pipe pipe; | |
5158 | ||
5159 | if (!dev_priv->drrs.dp) | |
5160 | return; | |
5161 | ||
3954e733 R |
5162 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5163 | ||
a93fad0f VK |
5164 | mutex_lock(&dev_priv->drrs.mutex); |
5165 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5166 | pipe = to_intel_crtc(crtc)->pipe; | |
5167 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
5168 | ||
a93fad0f VK |
5169 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR && |
5170 | !dev_priv->drrs.busy_frontbuffer_bits) | |
5171 | schedule_delayed_work(&dev_priv->drrs.work, | |
5172 | msecs_to_jiffies(1000)); | |
5173 | mutex_unlock(&dev_priv->drrs.mutex); | |
5174 | } | |
5175 | ||
b33a2815 VK |
5176 | /** |
5177 | * DOC: Display Refresh Rate Switching (DRRS) | |
5178 | * | |
5179 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5180 | * which enables swtching between low and high refresh rates, | |
5181 | * dynamically, based on the usage scenario. This feature is applicable | |
5182 | * for internal panels. | |
5183 | * | |
5184 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5185 | * would list multiple refresh rates for one resolution. | |
5186 | * | |
5187 | * DRRS is of 2 types - static and seamless. | |
5188 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5189 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5190 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5191 | * and can be used during normal system usage. This is done by programming | |
5192 | * certain registers. | |
5193 | * | |
5194 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5195 | * inputs from the panel spec. | |
5196 | * | |
5197 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5198 | * | |
5199 | * eDP DRRS:- | |
5200 | * The implementation is based on frontbuffer tracking implementation. | |
5201 | * When there is a disturbance on the screen triggered by user activity or a | |
5202 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5203 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5204 | * to low RR is made. | |
5205 | * For integration with frontbuffer tracking code, | |
5206 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5207 | * | |
5208 | * DRRS can be further extended to support other internal panels and also | |
5209 | * the scenario of video playback wherein RR is set based on the rate | |
5210 | * requested by userspace. | |
5211 | */ | |
5212 | ||
5213 | /** | |
5214 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5215 | * @intel_connector: eDP connector | |
5216 | * @fixed_mode: preferred mode of panel | |
5217 | * | |
5218 | * This function is called only once at driver load to initialize basic | |
5219 | * DRRS stuff. | |
5220 | * | |
5221 | * Returns: | |
5222 | * Downclock mode if panel supports it, else return NULL. | |
5223 | * DRRS support is determined by the presence of downclock mode (apart | |
5224 | * from VBT setting). | |
5225 | */ | |
4f9db5b5 | 5226 | static struct drm_display_mode * |
96178eeb VK |
5227 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5228 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5229 | { |
5230 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5231 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5232 | struct drm_i915_private *dev_priv = dev->dev_private; |
5233 | struct drm_display_mode *downclock_mode = NULL; | |
5234 | ||
5235 | if (INTEL_INFO(dev)->gen <= 6) { | |
5236 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5237 | return NULL; | |
5238 | } | |
5239 | ||
5240 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5241 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5242 | return NULL; |
5243 | } | |
5244 | ||
5245 | downclock_mode = intel_find_panel_downclock | |
5246 | (dev, fixed_mode, connector); | |
5247 | ||
5248 | if (!downclock_mode) { | |
a1d26342 | 5249 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5250 | return NULL; |
5251 | } | |
5252 | ||
4e9ac947 VK |
5253 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5254 | ||
96178eeb | 5255 | mutex_init(&dev_priv->drrs.mutex); |
439d7ac0 | 5256 | |
96178eeb | 5257 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5258 | |
96178eeb | 5259 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5260 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5261 | return downclock_mode; |
5262 | } | |
5263 | ||
ed92f0b2 | 5264 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5265 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5266 | { |
5267 | struct drm_connector *connector = &intel_connector->base; | |
5268 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5269 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5270 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5271 | struct drm_i915_private *dev_priv = dev->dev_private; |
5272 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5273 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5274 | bool has_dpcd; |
5275 | struct drm_display_mode *scan; | |
5276 | struct edid *edid; | |
6517d273 | 5277 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 | 5278 | |
96178eeb | 5279 | dev_priv->drrs.type = DRRS_NOT_SUPPORTED; |
4f9db5b5 | 5280 | |
ed92f0b2 PZ |
5281 | if (!is_edp(intel_dp)) |
5282 | return true; | |
5283 | ||
49e6bc51 VS |
5284 | pps_lock(intel_dp); |
5285 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5286 | pps_unlock(intel_dp); | |
63635217 | 5287 | |
ed92f0b2 | 5288 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5289 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5290 | |
5291 | if (has_dpcd) { | |
5292 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5293 | dev_priv->no_aux_handshake = | |
5294 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5295 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5296 | } else { | |
5297 | /* if this fails, presume the device is a ghost */ | |
5298 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5299 | return false; |
5300 | } | |
5301 | ||
5302 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5303 | pps_lock(intel_dp); |
36b5f425 | 5304 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5305 | pps_unlock(intel_dp); |
ed92f0b2 | 5306 | |
060c8778 | 5307 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5308 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5309 | if (edid) { |
5310 | if (drm_add_edid_modes(connector, edid)) { | |
5311 | drm_mode_connector_update_edid_property(connector, | |
5312 | edid); | |
5313 | drm_edid_to_eld(connector, edid); | |
5314 | } else { | |
5315 | kfree(edid); | |
5316 | edid = ERR_PTR(-EINVAL); | |
5317 | } | |
5318 | } else { | |
5319 | edid = ERR_PTR(-ENOENT); | |
5320 | } | |
5321 | intel_connector->edid = edid; | |
5322 | ||
5323 | /* prefer fixed mode from EDID if available */ | |
5324 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5325 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5326 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5327 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5328 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5329 | break; |
5330 | } | |
5331 | } | |
5332 | ||
5333 | /* fallback to VBT if available for eDP */ | |
5334 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5335 | fixed_mode = drm_mode_duplicate(dev, | |
5336 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5337 | if (fixed_mode) | |
5338 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5339 | } | |
060c8778 | 5340 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5341 | |
01527b31 CT |
5342 | if (IS_VALLEYVIEW(dev)) { |
5343 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5344 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5345 | |
5346 | /* | |
5347 | * Figure out the current pipe for the initial backlight setup. | |
5348 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5349 | * fails just assume pipe A. | |
5350 | */ | |
5351 | if (IS_CHERRYVIEW(dev)) | |
5352 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5353 | else | |
5354 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5355 | ||
5356 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5357 | pipe = intel_dp->pps_pipe; | |
5358 | ||
5359 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5360 | pipe = PIPE_A; | |
5361 | ||
5362 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5363 | pipe_name(pipe)); | |
01527b31 CT |
5364 | } |
5365 | ||
4f9db5b5 | 5366 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5367 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
6517d273 | 5368 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5369 | |
5370 | return true; | |
5371 | } | |
5372 | ||
16c25533 | 5373 | bool |
f0fec3f2 PZ |
5374 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5375 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5376 | { |
f0fec3f2 PZ |
5377 | struct drm_connector *connector = &intel_connector->base; |
5378 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5379 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5380 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5381 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5382 | enum port port = intel_dig_port->port; |
0b99836f | 5383 | int type; |
a4fc5ed6 | 5384 | |
a4a5d2f8 VS |
5385 | intel_dp->pps_pipe = INVALID_PIPE; |
5386 | ||
ec5b01dd | 5387 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5388 | if (INTEL_INFO(dev)->gen >= 9) |
5389 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5390 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5391 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5392 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5393 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5394 | else if (HAS_PCH_SPLIT(dev)) | |
5395 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5396 | else | |
5397 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5398 | ||
b9ca5fad DL |
5399 | if (INTEL_INFO(dev)->gen >= 9) |
5400 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5401 | else | |
5402 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5403 | |
0767935e DV |
5404 | /* Preserve the current hw state. */ |
5405 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5406 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5407 | |
3b32a35b | 5408 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5409 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5410 | else |
5411 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5412 | |
f7d24902 ID |
5413 | /* |
5414 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5415 | * for DP the encoder type can be set by the caller to | |
5416 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5417 | */ | |
5418 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5419 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5420 | ||
c17ed5b5 VS |
5421 | /* eDP only on port B and/or C on vlv/chv */ |
5422 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5423 | port != PORT_B && port != PORT_C)) | |
5424 | return false; | |
5425 | ||
e7281eab ID |
5426 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5427 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5428 | port_name(port)); | |
5429 | ||
b329530c | 5430 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5431 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5432 | ||
a4fc5ed6 KP |
5433 | connector->interlace_allowed = true; |
5434 | connector->doublescan_allowed = 0; | |
5435 | ||
f0fec3f2 | 5436 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5437 | edp_panel_vdd_work); |
a4fc5ed6 | 5438 | |
df0e9248 | 5439 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5440 | drm_connector_register(connector); |
a4fc5ed6 | 5441 | |
affa9354 | 5442 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5443 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5444 | else | |
5445 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5446 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5447 | |
0b99836f | 5448 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5449 | switch (port) { |
5450 | case PORT_A: | |
1d843f9d | 5451 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5452 | break; |
5453 | case PORT_B: | |
1d843f9d | 5454 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5455 | break; |
5456 | case PORT_C: | |
1d843f9d | 5457 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5458 | break; |
5459 | case PORT_D: | |
1d843f9d | 5460 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5461 | break; |
5462 | default: | |
ad1c0b19 | 5463 | BUG(); |
5eb08b69 ZW |
5464 | } |
5465 | ||
dada1a9f | 5466 | if (is_edp(intel_dp)) { |
773538e8 | 5467 | pps_lock(intel_dp); |
1e74a324 VS |
5468 | intel_dp_init_panel_power_timestamps(intel_dp); |
5469 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 5470 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 5471 | else |
36b5f425 | 5472 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 5473 | pps_unlock(intel_dp); |
dada1a9f | 5474 | } |
0095e6dc | 5475 | |
9d1a1031 | 5476 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5477 | |
0e32b39c | 5478 | /* init MST on ports that can support it */ |
c86ea3d0 | 5479 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
0e32b39c | 5480 | if (port == PORT_B || port == PORT_C || port == PORT_D) { |
a4a5d2f8 VS |
5481 | intel_dp_mst_encoder_init(intel_dig_port, |
5482 | intel_connector->base.base.id); | |
0e32b39c DA |
5483 | } |
5484 | } | |
5485 | ||
36b5f425 | 5486 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 5487 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5488 | if (is_edp(intel_dp)) { |
5489 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5490 | /* |
5491 | * vdd might still be enabled do to the delayed vdd off. | |
5492 | * Make sure vdd is actually turned off here. | |
5493 | */ | |
773538e8 | 5494 | pps_lock(intel_dp); |
4be73780 | 5495 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5496 | pps_unlock(intel_dp); |
15b1d171 | 5497 | } |
34ea3d38 | 5498 | drm_connector_unregister(connector); |
b2f246a8 | 5499 | drm_connector_cleanup(connector); |
16c25533 | 5500 | return false; |
b2f246a8 | 5501 | } |
32f9d658 | 5502 | |
f684960e CW |
5503 | intel_dp_add_properties(intel_dp, connector); |
5504 | ||
a4fc5ed6 KP |
5505 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5506 | * 0xd. Failure to do so will result in spurious interrupts being | |
5507 | * generated on the port when a cable is not attached. | |
5508 | */ | |
5509 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5510 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5511 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5512 | } | |
16c25533 PZ |
5513 | |
5514 | return true; | |
a4fc5ed6 | 5515 | } |
f0fec3f2 PZ |
5516 | |
5517 | void | |
5518 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5519 | { | |
13cf5504 | 5520 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5521 | struct intel_digital_port *intel_dig_port; |
5522 | struct intel_encoder *intel_encoder; | |
5523 | struct drm_encoder *encoder; | |
5524 | struct intel_connector *intel_connector; | |
5525 | ||
b14c5679 | 5526 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5527 | if (!intel_dig_port) |
5528 | return; | |
5529 | ||
b14c5679 | 5530 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
5531 | if (!intel_connector) { |
5532 | kfree(intel_dig_port); | |
5533 | return; | |
5534 | } | |
5535 | ||
5536 | intel_encoder = &intel_dig_port->base; | |
5537 | encoder = &intel_encoder->base; | |
5538 | ||
5539 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5540 | DRM_MODE_ENCODER_TMDS); | |
5541 | ||
5bfe2ac0 | 5542 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5543 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5544 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5545 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5546 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5547 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5548 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5549 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5550 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5551 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5552 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5553 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5554 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5555 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5556 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5557 | } else { |
ecff4f3b JN |
5558 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5559 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5560 | if (INTEL_INFO(dev)->gen >= 5) |
5561 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5562 | } |
f0fec3f2 | 5563 | |
174edf1f | 5564 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5565 | intel_dig_port->dp.output_reg = output_reg; |
5566 | ||
00c09d70 | 5567 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5568 | if (IS_CHERRYVIEW(dev)) { |
5569 | if (port == PORT_D) | |
5570 | intel_encoder->crtc_mask = 1 << 2; | |
5571 | else | |
5572 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5573 | } else { | |
5574 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5575 | } | |
bc079e8b | 5576 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5577 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5578 | ||
13cf5504 DA |
5579 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5580 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5581 | ||
15b1d171 PZ |
5582 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5583 | drm_encoder_cleanup(encoder); | |
5584 | kfree(intel_dig_port); | |
b2f246a8 | 5585 | kfree(intel_connector); |
15b1d171 | 5586 | } |
f0fec3f2 | 5587 | } |
0e32b39c DA |
5588 | |
5589 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5590 | { | |
5591 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5592 | int i; | |
5593 | ||
5594 | /* disable MST */ | |
5595 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5596 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5597 | if (!intel_dig_port) | |
5598 | continue; | |
5599 | ||
5600 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5601 | if (!intel_dig_port->dp.can_mst) | |
5602 | continue; | |
5603 | if (intel_dig_port->dp.is_mst) | |
5604 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5605 | } | |
5606 | } | |
5607 | } | |
5608 | ||
5609 | void intel_dp_mst_resume(struct drm_device *dev) | |
5610 | { | |
5611 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5612 | int i; | |
5613 | ||
5614 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5615 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5616 | if (!intel_dig_port) | |
5617 | continue; | |
5618 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5619 | int ret; | |
5620 | ||
5621 | if (!intel_dig_port->dp.can_mst) | |
5622 | continue; | |
5623 | ||
5624 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5625 | if (ret != 0) { | |
5626 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5627 | } | |
5628 | } | |
5629 | } | |
5630 | } |