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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 | |
ed4e9c1d VS |
125 | static int |
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 | ||
ed4e9c1d VS |
1258 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1259 | { | |
1260 | return rate_to_index(rate, intel_dp->supported_rates); | |
1261 | } | |
1262 | ||
00c09d70 | 1263 | bool |
5bfe2ac0 | 1264 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1265 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1266 | { |
5bfe2ac0 | 1267 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1268 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1269 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1270 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1271 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 1272 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 1273 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1274 | int lane_count, clock; |
56071a20 | 1275 | int min_lane_count = 1; |
eeb6324d | 1276 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1277 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1278 | int min_clock = 0; |
a8f3ef61 | 1279 | int max_clock; |
083f9560 | 1280 | int bpp, mode_rate; |
ff9a6750 | 1281 | int link_avail, link_clock; |
2ecae76a VS |
1282 | int supported_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1283 | int supported_len; | |
a8f3ef61 | 1284 | |
2ecae76a | 1285 | supported_len = intel_supported_rates(intel_dp, supported_rates); |
a8f3ef61 SJ |
1286 | |
1287 | /* No common link rates between source and sink */ | |
1288 | WARN_ON(supported_len <= 0); | |
1289 | ||
1290 | max_clock = supported_len - 1; | |
a4fc5ed6 | 1291 | |
bc7d38a4 | 1292 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1293 | pipe_config->has_pch_encoder = true; |
1294 | ||
03afc4a2 | 1295 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1296 | pipe_config->has_drrs = false; |
9ed109a7 | 1297 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 1298 | |
dd06f90e JN |
1299 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1300 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1301 | adjusted_mode); | |
2dd24552 JB |
1302 | if (!HAS_PCH_SPLIT(dev)) |
1303 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1304 | intel_connector->panel.fitting_mode); | |
1305 | else | |
b074cec8 JB |
1306 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1307 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1308 | } |
1309 | ||
cb1793ce | 1310 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1311 | return false; |
1312 | ||
083f9560 | 1313 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 SJ |
1314 | "max bw %d pixel clock %iKHz\n", |
1315 | max_lane_count, supported_rates[max_clock], | |
241bfc38 | 1316 | adjusted_mode->crtc_clock); |
083f9560 | 1317 | |
36008365 DV |
1318 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1319 | * bpc in between. */ | |
3e7ca985 | 1320 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1321 | if (is_edp(intel_dp)) { |
1322 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1323 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1324 | dev_priv->vbt.edp_bpp); | |
1325 | bpp = dev_priv->vbt.edp_bpp; | |
1326 | } | |
1327 | ||
344c5bbc JN |
1328 | /* |
1329 | * Use the maximum clock and number of lanes the eDP panel | |
1330 | * advertizes being capable of. The panels are generally | |
1331 | * designed to support only a single clock and lane | |
1332 | * configuration, and typically these values correspond to the | |
1333 | * native resolution of the panel. | |
1334 | */ | |
1335 | min_lane_count = max_lane_count; | |
1336 | min_clock = max_clock; | |
7984211e | 1337 | } |
657445fe | 1338 | |
36008365 | 1339 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1340 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1341 | bpp); | |
36008365 | 1342 | |
c6930992 | 1343 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1344 | for (lane_count = min_lane_count; |
1345 | lane_count <= max_lane_count; | |
1346 | lane_count <<= 1) { | |
1347 | ||
1348 | link_clock = supported_rates[clock]; | |
36008365 DV |
1349 | link_avail = intel_dp_max_data_rate(link_clock, |
1350 | lane_count); | |
1351 | ||
1352 | if (mode_rate <= link_avail) { | |
1353 | goto found; | |
1354 | } | |
1355 | } | |
1356 | } | |
1357 | } | |
c4867936 | 1358 | |
36008365 | 1359 | return false; |
3685a8f3 | 1360 | |
36008365 | 1361 | found: |
55bc60db VS |
1362 | if (intel_dp->color_range_auto) { |
1363 | /* | |
1364 | * See: | |
1365 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1366 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1367 | */ | |
18316c8c | 1368 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1369 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1370 | else | |
1371 | intel_dp->color_range = 0; | |
1372 | } | |
1373 | ||
3685a8f3 | 1374 | if (intel_dp->color_range) |
50f3b016 | 1375 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1376 | |
36008365 | 1377 | intel_dp->lane_count = lane_count; |
a8f3ef61 | 1378 | |
bc27b7d3 VS |
1379 | if (intel_dp->num_supported_rates) { |
1380 | intel_dp->link_bw = 0; | |
a8f3ef61 | 1381 | intel_dp->rate_select = |
ed4e9c1d | 1382 | intel_dp_rate_select(intel_dp, supported_rates[clock]); |
bc27b7d3 VS |
1383 | } else { |
1384 | intel_dp->link_bw = | |
1385 | drm_dp_link_rate_to_bw_code(supported_rates[clock]); | |
1386 | intel_dp->rate_select = 0; | |
a8f3ef61 SJ |
1387 | } |
1388 | ||
657445fe | 1389 | pipe_config->pipe_bpp = bpp; |
a8f3ef61 | 1390 | pipe_config->port_clock = supported_rates[clock]; |
a4fc5ed6 | 1391 | |
36008365 DV |
1392 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1393 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1394 | pipe_config->port_clock, bpp); |
36008365 DV |
1395 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1396 | mode_rate, link_avail); | |
a4fc5ed6 | 1397 | |
03afc4a2 | 1398 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1399 | adjusted_mode->crtc_clock, |
1400 | pipe_config->port_clock, | |
03afc4a2 | 1401 | &pipe_config->dp_m_n); |
9d1a455b | 1402 | |
439d7ac0 | 1403 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1404 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1405 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1406 | intel_link_compute_m_n(bpp, lane_count, |
1407 | intel_connector->panel.downclock_mode->clock, | |
1408 | pipe_config->port_clock, | |
1409 | &pipe_config->dp_m2_n2); | |
1410 | } | |
1411 | ||
5416d871 | 1412 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
c3346ef6 | 1413 | skl_edp_set_pll_config(pipe_config, supported_rates[clock]); |
5416d871 | 1414 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1415 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1416 | else | |
1417 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1418 | |
03afc4a2 | 1419 | return true; |
a4fc5ed6 KP |
1420 | } |
1421 | ||
7c62a164 | 1422 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1423 | { |
7c62a164 DV |
1424 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1425 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1426 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1427 | struct drm_i915_private *dev_priv = dev->dev_private; |
1428 | u32 dpa_ctl; | |
1429 | ||
6e3c9717 ACO |
1430 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1431 | crtc->config->port_clock); | |
ea9b6006 DV |
1432 | dpa_ctl = I915_READ(DP_A); |
1433 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1434 | ||
6e3c9717 | 1435 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1436 | /* For a long time we've carried around a ILK-DevA w/a for the |
1437 | * 160MHz clock. If we're really unlucky, it's still required. | |
1438 | */ | |
1439 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1440 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1441 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1442 | } else { |
1443 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1444 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1445 | } |
1ce17038 | 1446 | |
ea9b6006 DV |
1447 | I915_WRITE(DP_A, dpa_ctl); |
1448 | ||
1449 | POSTING_READ(DP_A); | |
1450 | udelay(500); | |
1451 | } | |
1452 | ||
8ac33ed3 | 1453 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1454 | { |
b934223d | 1455 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1456 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1457 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1458 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1459 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
6e3c9717 | 1460 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1461 | |
417e822d | 1462 | /* |
1a2eb460 | 1463 | * There are four kinds of DP registers: |
417e822d KP |
1464 | * |
1465 | * IBX PCH | |
1a2eb460 KP |
1466 | * SNB CPU |
1467 | * IVB CPU | |
417e822d KP |
1468 | * CPT PCH |
1469 | * | |
1470 | * IBX PCH and CPU are the same for almost everything, | |
1471 | * except that the CPU DP PLL is configured in this | |
1472 | * register | |
1473 | * | |
1474 | * CPT PCH is quite different, having many bits moved | |
1475 | * to the TRANS_DP_CTL register instead. That | |
1476 | * configuration happens (oddly) in ironlake_pch_enable | |
1477 | */ | |
9c9e7927 | 1478 | |
417e822d KP |
1479 | /* Preserve the BIOS-computed detected bit. This is |
1480 | * supposed to be read-only. | |
1481 | */ | |
1482 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1483 | |
417e822d | 1484 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1485 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1486 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1487 | |
6e3c9717 | 1488 | if (crtc->config->has_audio) |
ea5b213a | 1489 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1490 | |
417e822d | 1491 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1492 | |
bc7d38a4 | 1493 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1494 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1495 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1496 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1497 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1498 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1499 | ||
6aba5b6c | 1500 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1501 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1502 | ||
7c62a164 | 1503 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1504 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1505 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1506 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1507 | |
1508 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1509 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1510 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1511 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1512 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1513 | ||
6aba5b6c | 1514 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1515 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1516 | ||
44f37d1f CML |
1517 | if (!IS_CHERRYVIEW(dev)) { |
1518 | if (crtc->pipe == 1) | |
1519 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1520 | } else { | |
1521 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1522 | } | |
417e822d KP |
1523 | } else { |
1524 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1525 | } |
a4fc5ed6 KP |
1526 | } |
1527 | ||
ffd6749d PZ |
1528 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1529 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1530 | |
1a5ef5b7 PZ |
1531 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1532 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1533 | |
ffd6749d PZ |
1534 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1535 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1536 | |
4be73780 | 1537 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1538 | u32 mask, |
1539 | u32 value) | |
bd943159 | 1540 | { |
30add22d | 1541 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1542 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1543 | u32 pp_stat_reg, pp_ctrl_reg; |
1544 | ||
e39b999a VS |
1545 | lockdep_assert_held(&dev_priv->pps_mutex); |
1546 | ||
bf13e81b JN |
1547 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1548 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1549 | |
99ea7127 | 1550 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1551 | mask, value, |
1552 | I915_READ(pp_stat_reg), | |
1553 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1554 | |
453c5420 | 1555 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1556 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1557 | I915_READ(pp_stat_reg), |
1558 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1559 | } |
54c136d4 CW |
1560 | |
1561 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1562 | } |
32ce697c | 1563 | |
4be73780 | 1564 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1565 | { |
1566 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1567 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1568 | } |
1569 | ||
4be73780 | 1570 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1571 | { |
1572 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1573 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1574 | } |
1575 | ||
4be73780 | 1576 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1577 | { |
1578 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1579 | |
1580 | /* When we disable the VDD override bit last we have to do the manual | |
1581 | * wait. */ | |
1582 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1583 | intel_dp->panel_power_cycle_delay); | |
1584 | ||
4be73780 | 1585 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1586 | } |
1587 | ||
4be73780 | 1588 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1589 | { |
1590 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1591 | intel_dp->backlight_on_delay); | |
1592 | } | |
1593 | ||
4be73780 | 1594 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1595 | { |
1596 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1597 | intel_dp->backlight_off_delay); | |
1598 | } | |
99ea7127 | 1599 | |
832dd3c1 KP |
1600 | /* Read the current pp_control value, unlocking the register if it |
1601 | * is locked | |
1602 | */ | |
1603 | ||
453c5420 | 1604 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1605 | { |
453c5420 JB |
1606 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1607 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1608 | u32 control; | |
832dd3c1 | 1609 | |
e39b999a VS |
1610 | lockdep_assert_held(&dev_priv->pps_mutex); |
1611 | ||
bf13e81b | 1612 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1613 | control &= ~PANEL_UNLOCK_MASK; |
1614 | control |= PANEL_UNLOCK_REGS; | |
1615 | return control; | |
bd943159 KP |
1616 | } |
1617 | ||
951468f3 VS |
1618 | /* |
1619 | * Must be paired with edp_panel_vdd_off(). | |
1620 | * Must hold pps_mutex around the whole on/off sequence. | |
1621 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1622 | */ | |
1e0560e0 | 1623 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1624 | { |
30add22d | 1625 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1626 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1627 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1628 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1629 | enum intel_display_power_domain power_domain; |
5d613501 | 1630 | u32 pp; |
453c5420 | 1631 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1632 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1633 | |
e39b999a VS |
1634 | lockdep_assert_held(&dev_priv->pps_mutex); |
1635 | ||
97af61f5 | 1636 | if (!is_edp(intel_dp)) |
adddaaf4 | 1637 | return false; |
bd943159 | 1638 | |
2c623c11 | 1639 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1640 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1641 | |
4be73780 | 1642 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1643 | return need_to_disable; |
b0665d57 | 1644 | |
4e6e1a54 ID |
1645 | power_domain = intel_display_port_power_domain(intel_encoder); |
1646 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1647 | |
3936fcf4 VS |
1648 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1649 | port_name(intel_dig_port->port)); | |
bd943159 | 1650 | |
4be73780 DV |
1651 | if (!edp_have_panel_power(intel_dp)) |
1652 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1653 | |
453c5420 | 1654 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1655 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1656 | |
bf13e81b JN |
1657 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1658 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1659 | |
1660 | I915_WRITE(pp_ctrl_reg, pp); | |
1661 | POSTING_READ(pp_ctrl_reg); | |
1662 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1663 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1664 | /* |
1665 | * If the panel wasn't on, delay before accessing aux channel | |
1666 | */ | |
4be73780 | 1667 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1668 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1669 | port_name(intel_dig_port->port)); | |
f01eca2e | 1670 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1671 | } |
adddaaf4 JN |
1672 | |
1673 | return need_to_disable; | |
1674 | } | |
1675 | ||
951468f3 VS |
1676 | /* |
1677 | * Must be paired with intel_edp_panel_vdd_off() or | |
1678 | * intel_edp_panel_off(). | |
1679 | * Nested calls to these functions are not allowed since | |
1680 | * we drop the lock. Caller must use some higher level | |
1681 | * locking to prevent nested calls from other threads. | |
1682 | */ | |
b80d6c78 | 1683 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1684 | { |
c695b6b6 | 1685 | bool vdd; |
adddaaf4 | 1686 | |
c695b6b6 VS |
1687 | if (!is_edp(intel_dp)) |
1688 | return; | |
1689 | ||
773538e8 | 1690 | pps_lock(intel_dp); |
c695b6b6 | 1691 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1692 | pps_unlock(intel_dp); |
c695b6b6 | 1693 | |
e2c719b7 | 1694 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1695 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1696 | } |
1697 | ||
4be73780 | 1698 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1699 | { |
30add22d | 1700 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1701 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1702 | struct intel_digital_port *intel_dig_port = |
1703 | dp_to_dig_port(intel_dp); | |
1704 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1705 | enum intel_display_power_domain power_domain; | |
5d613501 | 1706 | u32 pp; |
453c5420 | 1707 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1708 | |
e39b999a | 1709 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1710 | |
15e899a0 | 1711 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1712 | |
15e899a0 | 1713 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1714 | return; |
b0665d57 | 1715 | |
3936fcf4 VS |
1716 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1717 | port_name(intel_dig_port->port)); | |
bd943159 | 1718 | |
be2c9196 VS |
1719 | pp = ironlake_get_pp_control(intel_dp); |
1720 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1721 | |
be2c9196 VS |
1722 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1723 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1724 | |
be2c9196 VS |
1725 | I915_WRITE(pp_ctrl_reg, pp); |
1726 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1727 | |
be2c9196 VS |
1728 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1729 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1730 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1731 | |
be2c9196 VS |
1732 | if ((pp & POWER_TARGET_ON) == 0) |
1733 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1734 | |
be2c9196 VS |
1735 | power_domain = intel_display_port_power_domain(intel_encoder); |
1736 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1737 | } |
5d613501 | 1738 | |
4be73780 | 1739 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1740 | { |
1741 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1742 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1743 | |
773538e8 | 1744 | pps_lock(intel_dp); |
15e899a0 VS |
1745 | if (!intel_dp->want_panel_vdd) |
1746 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1747 | pps_unlock(intel_dp); |
bd943159 KP |
1748 | } |
1749 | ||
aba86890 ID |
1750 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1751 | { | |
1752 | unsigned long delay; | |
1753 | ||
1754 | /* | |
1755 | * Queue the timer to fire a long time from now (relative to the power | |
1756 | * down delay) to keep the panel power up across a sequence of | |
1757 | * operations. | |
1758 | */ | |
1759 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1760 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1761 | } | |
1762 | ||
951468f3 VS |
1763 | /* |
1764 | * Must be paired with edp_panel_vdd_on(). | |
1765 | * Must hold pps_mutex around the whole on/off sequence. | |
1766 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1767 | */ | |
4be73780 | 1768 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1769 | { |
e39b999a VS |
1770 | struct drm_i915_private *dev_priv = |
1771 | intel_dp_to_dev(intel_dp)->dev_private; | |
1772 | ||
1773 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1774 | ||
97af61f5 KP |
1775 | if (!is_edp(intel_dp)) |
1776 | return; | |
5d613501 | 1777 | |
e2c719b7 | 1778 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1779 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1780 | |
bd943159 KP |
1781 | intel_dp->want_panel_vdd = false; |
1782 | ||
aba86890 | 1783 | if (sync) |
4be73780 | 1784 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1785 | else |
1786 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1787 | } |
1788 | ||
9f0fb5be | 1789 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1790 | { |
30add22d | 1791 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1792 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1793 | u32 pp; |
453c5420 | 1794 | u32 pp_ctrl_reg; |
9934c132 | 1795 | |
9f0fb5be VS |
1796 | lockdep_assert_held(&dev_priv->pps_mutex); |
1797 | ||
97af61f5 | 1798 | if (!is_edp(intel_dp)) |
bd943159 | 1799 | return; |
99ea7127 | 1800 | |
3936fcf4 VS |
1801 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1802 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1803 | |
e7a89ace VS |
1804 | if (WARN(edp_have_panel_power(intel_dp), |
1805 | "eDP port %c panel power already on\n", | |
1806 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1807 | return; |
9934c132 | 1808 | |
4be73780 | 1809 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1810 | |
bf13e81b | 1811 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1812 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1813 | if (IS_GEN5(dev)) { |
1814 | /* ILK workaround: disable reset around power sequence */ | |
1815 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1816 | I915_WRITE(pp_ctrl_reg, pp); |
1817 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1818 | } |
37c6c9b0 | 1819 | |
1c0ae80a | 1820 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1821 | if (!IS_GEN5(dev)) |
1822 | pp |= PANEL_POWER_RESET; | |
1823 | ||
453c5420 JB |
1824 | I915_WRITE(pp_ctrl_reg, pp); |
1825 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1826 | |
4be73780 | 1827 | wait_panel_on(intel_dp); |
dce56b3c | 1828 | intel_dp->last_power_on = jiffies; |
9934c132 | 1829 | |
05ce1a49 KP |
1830 | if (IS_GEN5(dev)) { |
1831 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1832 | I915_WRITE(pp_ctrl_reg, pp); |
1833 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1834 | } |
9f0fb5be | 1835 | } |
e39b999a | 1836 | |
9f0fb5be VS |
1837 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1838 | { | |
1839 | if (!is_edp(intel_dp)) | |
1840 | return; | |
1841 | ||
1842 | pps_lock(intel_dp); | |
1843 | edp_panel_on(intel_dp); | |
773538e8 | 1844 | pps_unlock(intel_dp); |
9934c132 JB |
1845 | } |
1846 | ||
9f0fb5be VS |
1847 | |
1848 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1849 | { |
4e6e1a54 ID |
1850 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1851 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1852 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1853 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1854 | enum intel_display_power_domain power_domain; |
99ea7127 | 1855 | u32 pp; |
453c5420 | 1856 | u32 pp_ctrl_reg; |
9934c132 | 1857 | |
9f0fb5be VS |
1858 | lockdep_assert_held(&dev_priv->pps_mutex); |
1859 | ||
97af61f5 KP |
1860 | if (!is_edp(intel_dp)) |
1861 | return; | |
37c6c9b0 | 1862 | |
3936fcf4 VS |
1863 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
1864 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 1865 | |
3936fcf4 VS |
1866 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
1867 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 1868 | |
453c5420 | 1869 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1870 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1871 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1872 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1873 | EDP_BLC_ENABLE); | |
453c5420 | 1874 | |
bf13e81b | 1875 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1876 | |
849e39f5 PZ |
1877 | intel_dp->want_panel_vdd = false; |
1878 | ||
453c5420 JB |
1879 | I915_WRITE(pp_ctrl_reg, pp); |
1880 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1881 | |
dce56b3c | 1882 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1883 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1884 | |
1885 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1886 | power_domain = intel_display_port_power_domain(intel_encoder); |
1887 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 1888 | } |
e39b999a | 1889 | |
9f0fb5be VS |
1890 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
1891 | { | |
1892 | if (!is_edp(intel_dp)) | |
1893 | return; | |
e39b999a | 1894 | |
9f0fb5be VS |
1895 | pps_lock(intel_dp); |
1896 | edp_panel_off(intel_dp); | |
773538e8 | 1897 | pps_unlock(intel_dp); |
9934c132 JB |
1898 | } |
1899 | ||
1250d107 JN |
1900 | /* Enable backlight in the panel power control. */ |
1901 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1902 | { |
da63a9f2 PZ |
1903 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1904 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1905 | struct drm_i915_private *dev_priv = dev->dev_private; |
1906 | u32 pp; | |
453c5420 | 1907 | u32 pp_ctrl_reg; |
32f9d658 | 1908 | |
01cb9ea6 JB |
1909 | /* |
1910 | * If we enable the backlight right away following a panel power | |
1911 | * on, we may see slight flicker as the panel syncs with the eDP | |
1912 | * link. So delay a bit to make sure the image is solid before | |
1913 | * allowing it to appear. | |
1914 | */ | |
4be73780 | 1915 | wait_backlight_on(intel_dp); |
e39b999a | 1916 | |
773538e8 | 1917 | pps_lock(intel_dp); |
e39b999a | 1918 | |
453c5420 | 1919 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1920 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1921 | |
bf13e81b | 1922 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1923 | |
1924 | I915_WRITE(pp_ctrl_reg, pp); | |
1925 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1926 | |
773538e8 | 1927 | pps_unlock(intel_dp); |
32f9d658 ZW |
1928 | } |
1929 | ||
1250d107 JN |
1930 | /* Enable backlight PWM and backlight PP control. */ |
1931 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1932 | { | |
1933 | if (!is_edp(intel_dp)) | |
1934 | return; | |
1935 | ||
1936 | DRM_DEBUG_KMS("\n"); | |
1937 | ||
1938 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1939 | _intel_edp_backlight_on(intel_dp); | |
1940 | } | |
1941 | ||
1942 | /* Disable backlight in the panel power control. */ | |
1943 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 1944 | { |
30add22d | 1945 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1946 | struct drm_i915_private *dev_priv = dev->dev_private; |
1947 | u32 pp; | |
453c5420 | 1948 | u32 pp_ctrl_reg; |
32f9d658 | 1949 | |
f01eca2e KP |
1950 | if (!is_edp(intel_dp)) |
1951 | return; | |
1952 | ||
773538e8 | 1953 | pps_lock(intel_dp); |
e39b999a | 1954 | |
453c5420 | 1955 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1956 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1957 | |
bf13e81b | 1958 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1959 | |
1960 | I915_WRITE(pp_ctrl_reg, pp); | |
1961 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 1962 | |
773538e8 | 1963 | pps_unlock(intel_dp); |
e39b999a VS |
1964 | |
1965 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 1966 | edp_wait_backlight_off(intel_dp); |
1250d107 | 1967 | } |
f7d2323c | 1968 | |
1250d107 JN |
1969 | /* Disable backlight PP control and backlight PWM. */ |
1970 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
1971 | { | |
1972 | if (!is_edp(intel_dp)) | |
1973 | return; | |
1974 | ||
1975 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 1976 | |
1250d107 | 1977 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 1978 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 1979 | } |
a4fc5ed6 | 1980 | |
73580fb7 JN |
1981 | /* |
1982 | * Hook for controlling the panel power control backlight through the bl_power | |
1983 | * sysfs attribute. Take care to handle multiple calls. | |
1984 | */ | |
1985 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
1986 | bool enable) | |
1987 | { | |
1988 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
1989 | bool is_enabled; |
1990 | ||
773538e8 | 1991 | pps_lock(intel_dp); |
e39b999a | 1992 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 1993 | pps_unlock(intel_dp); |
73580fb7 JN |
1994 | |
1995 | if (is_enabled == enable) | |
1996 | return; | |
1997 | ||
23ba9373 JN |
1998 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
1999 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2000 | |
2001 | if (enable) | |
2002 | _intel_edp_backlight_on(intel_dp); | |
2003 | else | |
2004 | _intel_edp_backlight_off(intel_dp); | |
2005 | } | |
2006 | ||
2bd2ad64 | 2007 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2008 | { |
da63a9f2 PZ |
2009 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2010 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2011 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2012 | struct drm_i915_private *dev_priv = dev->dev_private; |
2013 | u32 dpa_ctl; | |
2014 | ||
2bd2ad64 DV |
2015 | assert_pipe_disabled(dev_priv, |
2016 | to_intel_crtc(crtc)->pipe); | |
2017 | ||
d240f20f JB |
2018 | DRM_DEBUG_KMS("\n"); |
2019 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2020 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2021 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2022 | ||
2023 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2024 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2025 | * enable bits here to ensure that we don't enable too much. */ | |
2026 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2027 | intel_dp->DP |= DP_PLL_ENABLE; | |
2028 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2029 | POSTING_READ(DP_A); |
2030 | udelay(200); | |
d240f20f JB |
2031 | } |
2032 | ||
2bd2ad64 | 2033 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2034 | { |
da63a9f2 PZ |
2035 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2036 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2037 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2038 | struct drm_i915_private *dev_priv = dev->dev_private; |
2039 | u32 dpa_ctl; | |
2040 | ||
2bd2ad64 DV |
2041 | assert_pipe_disabled(dev_priv, |
2042 | to_intel_crtc(crtc)->pipe); | |
2043 | ||
d240f20f | 2044 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2045 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2046 | "dp pll off, should be on\n"); | |
2047 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2048 | ||
2049 | /* We can't rely on the value tracked for the DP register in | |
2050 | * intel_dp->DP because link_down must not change that (otherwise link | |
2051 | * re-training will fail. */ | |
298b0b39 | 2052 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2053 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2054 | POSTING_READ(DP_A); |
d240f20f JB |
2055 | udelay(200); |
2056 | } | |
2057 | ||
c7ad3810 | 2058 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2059 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2060 | { |
2061 | int ret, i; | |
2062 | ||
2063 | /* Should have a valid DPCD by this point */ | |
2064 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2065 | return; | |
2066 | ||
2067 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2068 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2069 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2070 | } else { |
2071 | /* | |
2072 | * When turning on, we need to retry for 1ms to give the sink | |
2073 | * time to wake up. | |
2074 | */ | |
2075 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2076 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2077 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2078 | if (ret == 1) |
2079 | break; | |
2080 | msleep(1); | |
2081 | } | |
2082 | } | |
f9cac721 JN |
2083 | |
2084 | if (ret != 1) | |
2085 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2086 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2087 | } |
2088 | ||
19d8fe15 DV |
2089 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2090 | enum pipe *pipe) | |
d240f20f | 2091 | { |
19d8fe15 | 2092 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2093 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2094 | struct drm_device *dev = encoder->base.dev; |
2095 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2096 | enum intel_display_power_domain power_domain; |
2097 | u32 tmp; | |
2098 | ||
2099 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2100 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2101 | return false; |
2102 | ||
2103 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2104 | |
2105 | if (!(tmp & DP_PORT_EN)) | |
2106 | return false; | |
2107 | ||
bc7d38a4 | 2108 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 2109 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
2110 | } else if (IS_CHERRYVIEW(dev)) { |
2111 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 2112 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
2113 | *pipe = PORT_TO_PIPE(tmp); |
2114 | } else { | |
2115 | u32 trans_sel; | |
2116 | u32 trans_dp; | |
2117 | int i; | |
2118 | ||
2119 | switch (intel_dp->output_reg) { | |
2120 | case PCH_DP_B: | |
2121 | trans_sel = TRANS_DP_PORT_SEL_B; | |
2122 | break; | |
2123 | case PCH_DP_C: | |
2124 | trans_sel = TRANS_DP_PORT_SEL_C; | |
2125 | break; | |
2126 | case PCH_DP_D: | |
2127 | trans_sel = TRANS_DP_PORT_SEL_D; | |
2128 | break; | |
2129 | default: | |
2130 | return true; | |
2131 | } | |
2132 | ||
055e393f | 2133 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
2134 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
2135 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
2136 | *pipe = i; | |
2137 | return true; | |
2138 | } | |
2139 | } | |
19d8fe15 | 2140 | |
4a0833ec DV |
2141 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2142 | intel_dp->output_reg); | |
2143 | } | |
d240f20f | 2144 | |
19d8fe15 DV |
2145 | return true; |
2146 | } | |
d240f20f | 2147 | |
045ac3b5 | 2148 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2149 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2150 | { |
2151 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2152 | u32 tmp, flags = 0; |
63000ef6 XZ |
2153 | struct drm_device *dev = encoder->base.dev; |
2154 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2155 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2156 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2157 | int dotclock; |
045ac3b5 | 2158 | |
9ed109a7 DV |
2159 | tmp = I915_READ(intel_dp->output_reg); |
2160 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
2161 | pipe_config->has_audio = true; | |
2162 | ||
63000ef6 | 2163 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
2164 | if (tmp & DP_SYNC_HS_HIGH) |
2165 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2166 | else | |
2167 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2168 | |
63000ef6 XZ |
2169 | if (tmp & DP_SYNC_VS_HIGH) |
2170 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2171 | else | |
2172 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2173 | } else { | |
2174 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
2175 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
2176 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2177 | else | |
2178 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2179 | |
63000ef6 XZ |
2180 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
2181 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2182 | else | |
2183 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2184 | } | |
045ac3b5 | 2185 | |
2d112de7 | 2186 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2187 | |
8c875fca VS |
2188 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2189 | tmp & DP_COLOR_RANGE_16_235) | |
2190 | pipe_config->limited_color_range = true; | |
2191 | ||
eb14cb74 VS |
2192 | pipe_config->has_dp_encoder = true; |
2193 | ||
2194 | intel_dp_get_m_n(crtc, pipe_config); | |
2195 | ||
18442d08 | 2196 | if (port == PORT_A) { |
f1f644dc JB |
2197 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2198 | pipe_config->port_clock = 162000; | |
2199 | else | |
2200 | pipe_config->port_clock = 270000; | |
2201 | } | |
18442d08 VS |
2202 | |
2203 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2204 | &pipe_config->dp_m_n); | |
2205 | ||
2206 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2207 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2208 | ||
2d112de7 | 2209 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2210 | |
c6cd2ee2 JN |
2211 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2212 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2213 | /* | |
2214 | * This is a big fat ugly hack. | |
2215 | * | |
2216 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2217 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2218 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2219 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2220 | * max, not what it tells us to use. | |
2221 | * | |
2222 | * Note: This will still be broken if the eDP panel is not lit | |
2223 | * up by the BIOS, and thus we can't get the mode at module | |
2224 | * load. | |
2225 | */ | |
2226 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2227 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2228 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2229 | } | |
045ac3b5 JB |
2230 | } |
2231 | ||
e8cb4558 | 2232 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2233 | { |
e8cb4558 | 2234 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2235 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2236 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2237 | ||
6e3c9717 | 2238 | if (crtc->config->has_audio) |
495a5bb8 | 2239 | intel_audio_codec_disable(encoder); |
6cb49835 | 2240 | |
b32c6f48 RV |
2241 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2242 | intel_psr_disable(intel_dp); | |
2243 | ||
6cb49835 DV |
2244 | /* Make sure the panel is off before trying to change the mode. But also |
2245 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2246 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2247 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2248 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2249 | intel_edp_panel_off(intel_dp); |
3739850b | 2250 | |
08aff3fe VS |
2251 | /* disable the port before the pipe on g4x */ |
2252 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2253 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2254 | } |
2255 | ||
08aff3fe | 2256 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2257 | { |
2bd2ad64 | 2258 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2259 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2260 | |
49277c31 | 2261 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2262 | if (port == PORT_A) |
2263 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2264 | } |
2265 | ||
2266 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2267 | { | |
2268 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2269 | ||
2270 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2271 | } |
2272 | ||
580d3811 VS |
2273 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2274 | { | |
2275 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2276 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2277 | struct drm_device *dev = encoder->base.dev; | |
2278 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2279 | struct intel_crtc *intel_crtc = | |
2280 | to_intel_crtc(encoder->base.crtc); | |
2281 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2282 | enum pipe pipe = intel_crtc->pipe; | |
2283 | u32 val; | |
2284 | ||
2285 | intel_dp_link_down(intel_dp); | |
2286 | ||
2287 | mutex_lock(&dev_priv->dpio_lock); | |
2288 | ||
2289 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2290 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2291 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2292 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2293 | |
97fd4d5c VS |
2294 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2295 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2296 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2297 | ||
2298 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2299 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2300 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2301 | ||
2302 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2303 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2304 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2305 | |
2306 | mutex_unlock(&dev_priv->dpio_lock); | |
2307 | } | |
2308 | ||
7b13b58a VS |
2309 | static void |
2310 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2311 | uint32_t *DP, | |
2312 | uint8_t dp_train_pat) | |
2313 | { | |
2314 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2315 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2316 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2317 | enum port port = intel_dig_port->port; | |
2318 | ||
2319 | if (HAS_DDI(dev)) { | |
2320 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2321 | ||
2322 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2323 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2324 | else | |
2325 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2326 | ||
2327 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2328 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2329 | case DP_TRAINING_PATTERN_DISABLE: | |
2330 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2331 | ||
2332 | break; | |
2333 | case DP_TRAINING_PATTERN_1: | |
2334 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2335 | break; | |
2336 | case DP_TRAINING_PATTERN_2: | |
2337 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2338 | break; | |
2339 | case DP_TRAINING_PATTERN_3: | |
2340 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2341 | break; | |
2342 | } | |
2343 | I915_WRITE(DP_TP_CTL(port), temp); | |
2344 | ||
2345 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2346 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2347 | ||
2348 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2349 | case DP_TRAINING_PATTERN_DISABLE: | |
2350 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2351 | break; | |
2352 | case DP_TRAINING_PATTERN_1: | |
2353 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2354 | break; | |
2355 | case DP_TRAINING_PATTERN_2: | |
2356 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2357 | break; | |
2358 | case DP_TRAINING_PATTERN_3: | |
2359 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2360 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2361 | break; | |
2362 | } | |
2363 | ||
2364 | } else { | |
2365 | if (IS_CHERRYVIEW(dev)) | |
2366 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2367 | else | |
2368 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2369 | ||
2370 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2371 | case DP_TRAINING_PATTERN_DISABLE: | |
2372 | *DP |= DP_LINK_TRAIN_OFF; | |
2373 | break; | |
2374 | case DP_TRAINING_PATTERN_1: | |
2375 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2376 | break; | |
2377 | case DP_TRAINING_PATTERN_2: | |
2378 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2379 | break; | |
2380 | case DP_TRAINING_PATTERN_3: | |
2381 | if (IS_CHERRYVIEW(dev)) { | |
2382 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2383 | } else { | |
2384 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2385 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2386 | } | |
2387 | break; | |
2388 | } | |
2389 | } | |
2390 | } | |
2391 | ||
2392 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2393 | { | |
2394 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2395 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2396 | ||
7b13b58a VS |
2397 | /* enable with pattern 1 (as per spec) */ |
2398 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2399 | DP_TRAINING_PATTERN_1); | |
2400 | ||
2401 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2402 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2403 | |
2404 | /* | |
2405 | * Magic for VLV/CHV. We _must_ first set up the register | |
2406 | * without actually enabling the port, and then do another | |
2407 | * write to enable the port. Otherwise link training will | |
2408 | * fail when the power sequencer is freshly used for this port. | |
2409 | */ | |
2410 | intel_dp->DP |= DP_PORT_EN; | |
2411 | ||
2412 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2413 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2414 | } |
2415 | ||
e8cb4558 | 2416 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2417 | { |
e8cb4558 DV |
2418 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2419 | struct drm_device *dev = encoder->base.dev; | |
2420 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2421 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2422 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
5d613501 | 2423 | |
0c33d8d7 DV |
2424 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2425 | return; | |
5d613501 | 2426 | |
093e3f13 VS |
2427 | pps_lock(intel_dp); |
2428 | ||
2429 | if (IS_VALLEYVIEW(dev)) | |
2430 | vlv_init_panel_power_sequencer(intel_dp); | |
2431 | ||
7b13b58a | 2432 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2433 | |
2434 | edp_panel_vdd_on(intel_dp); | |
2435 | edp_panel_on(intel_dp); | |
2436 | edp_panel_vdd_off(intel_dp, true); | |
2437 | ||
2438 | pps_unlock(intel_dp); | |
2439 | ||
61234fa5 VS |
2440 | if (IS_VALLEYVIEW(dev)) |
2441 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp)); | |
2442 | ||
f01eca2e | 2443 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2444 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2445 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2446 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2447 | |
6e3c9717 | 2448 | if (crtc->config->has_audio) { |
c1dec79a JN |
2449 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2450 | pipe_name(crtc->pipe)); | |
2451 | intel_audio_codec_enable(encoder); | |
2452 | } | |
ab1f90f9 | 2453 | } |
89b667f8 | 2454 | |
ecff4f3b JN |
2455 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2456 | { | |
828f5c6e JN |
2457 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2458 | ||
ecff4f3b | 2459 | intel_enable_dp(encoder); |
4be73780 | 2460 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2461 | } |
89b667f8 | 2462 | |
ab1f90f9 JN |
2463 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2464 | { | |
828f5c6e JN |
2465 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2466 | ||
4be73780 | 2467 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2468 | intel_psr_enable(intel_dp); |
d240f20f JB |
2469 | } |
2470 | ||
ecff4f3b | 2471 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2472 | { |
2473 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2474 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2475 | ||
8ac33ed3 DV |
2476 | intel_dp_prepare(encoder); |
2477 | ||
d41f1efb DV |
2478 | /* Only ilk+ has port A */ |
2479 | if (dport->port == PORT_A) { | |
2480 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2481 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2482 | } |
ab1f90f9 JN |
2483 | } |
2484 | ||
83b84597 VS |
2485 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2486 | { | |
2487 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2488 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2489 | enum pipe pipe = intel_dp->pps_pipe; | |
2490 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2491 | ||
2492 | edp_panel_vdd_off_sync(intel_dp); | |
2493 | ||
2494 | /* | |
2495 | * VLV seems to get confused when multiple power seqeuencers | |
2496 | * have the same port selected (even if only one has power/vdd | |
2497 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2498 | * CHV on the other hand doesn't seem to mind having the same port | |
2499 | * selected in multiple power seqeuencers, but let's clear the | |
2500 | * port select always when logically disconnecting a power sequencer | |
2501 | * from a port. | |
2502 | */ | |
2503 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2504 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2505 | I915_WRITE(pp_on_reg, 0); | |
2506 | POSTING_READ(pp_on_reg); | |
2507 | ||
2508 | intel_dp->pps_pipe = INVALID_PIPE; | |
2509 | } | |
2510 | ||
a4a5d2f8 VS |
2511 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2512 | enum pipe pipe) | |
2513 | { | |
2514 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2515 | struct intel_encoder *encoder; | |
2516 | ||
2517 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2518 | ||
ac3c12e4 VS |
2519 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2520 | return; | |
2521 | ||
a4a5d2f8 VS |
2522 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2523 | base.head) { | |
2524 | struct intel_dp *intel_dp; | |
773538e8 | 2525 | enum port port; |
a4a5d2f8 VS |
2526 | |
2527 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2528 | continue; | |
2529 | ||
2530 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2531 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2532 | |
2533 | if (intel_dp->pps_pipe != pipe) | |
2534 | continue; | |
2535 | ||
2536 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2537 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2538 | |
034e43c6 VS |
2539 | WARN(encoder->connectors_active, |
2540 | "stealing pipe %c power sequencer from active eDP port %c\n", | |
2541 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2542 | |
a4a5d2f8 | 2543 | /* make sure vdd is off before we steal it */ |
83b84597 | 2544 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2545 | } |
2546 | } | |
2547 | ||
2548 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2549 | { | |
2550 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2551 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2552 | struct drm_device *dev = encoder->base.dev; | |
2553 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2554 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2555 | |
2556 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2557 | ||
093e3f13 VS |
2558 | if (!is_edp(intel_dp)) |
2559 | return; | |
2560 | ||
a4a5d2f8 VS |
2561 | if (intel_dp->pps_pipe == crtc->pipe) |
2562 | return; | |
2563 | ||
2564 | /* | |
2565 | * If another power sequencer was being used on this | |
2566 | * port previously make sure to turn off vdd there while | |
2567 | * we still have control of it. | |
2568 | */ | |
2569 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2570 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2571 | |
2572 | /* | |
2573 | * We may be stealing the power | |
2574 | * sequencer from another port. | |
2575 | */ | |
2576 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2577 | ||
2578 | /* now it's all ours */ | |
2579 | intel_dp->pps_pipe = crtc->pipe; | |
2580 | ||
2581 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2582 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2583 | ||
2584 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2585 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2586 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2587 | } |
2588 | ||
ab1f90f9 | 2589 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2590 | { |
2bd2ad64 | 2591 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2592 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2593 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2594 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2595 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2596 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2597 | int pipe = intel_crtc->pipe; |
2598 | u32 val; | |
a4fc5ed6 | 2599 | |
ab1f90f9 | 2600 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2601 | |
ab3c759a | 2602 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2603 | val = 0; |
2604 | if (pipe) | |
2605 | val |= (1<<21); | |
2606 | else | |
2607 | val &= ~(1<<21); | |
2608 | val |= 0x001000c4; | |
ab3c759a CML |
2609 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2610 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2611 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2612 | |
ab1f90f9 JN |
2613 | mutex_unlock(&dev_priv->dpio_lock); |
2614 | ||
2615 | intel_enable_dp(encoder); | |
89b667f8 JB |
2616 | } |
2617 | ||
ecff4f3b | 2618 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2619 | { |
2620 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2621 | struct drm_device *dev = encoder->base.dev; | |
2622 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2623 | struct intel_crtc *intel_crtc = |
2624 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2625 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2626 | int pipe = intel_crtc->pipe; |
89b667f8 | 2627 | |
8ac33ed3 DV |
2628 | intel_dp_prepare(encoder); |
2629 | ||
89b667f8 | 2630 | /* Program Tx lane resets to default */ |
0980a60f | 2631 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2632 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2633 | DPIO_PCS_TX_LANE2_RESET | |
2634 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2635 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2636 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2637 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2638 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2639 | DPIO_PCS_CLK_SOFT_RESET); | |
2640 | ||
2641 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2642 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2643 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2644 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2645 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2646 | } |
2647 | ||
e4a1d846 CML |
2648 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2649 | { | |
2650 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2651 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2652 | struct drm_device *dev = encoder->base.dev; | |
2653 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2654 | struct intel_crtc *intel_crtc = |
2655 | to_intel_crtc(encoder->base.crtc); | |
2656 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2657 | int pipe = intel_crtc->pipe; | |
2658 | int data, i; | |
949c1d43 | 2659 | u32 val; |
e4a1d846 | 2660 | |
e4a1d846 | 2661 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 | 2662 | |
570e2a74 VS |
2663 | /* allow hardware to manage TX FIFO reset source */ |
2664 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2665 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2666 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2667 | ||
2668 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2669 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2670 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2671 | ||
949c1d43 | 2672 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2673 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2674 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2675 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2676 | ||
2677 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2678 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2679 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2680 | ||
2681 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2682 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2683 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2684 | |
97fd4d5c | 2685 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2686 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2687 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2688 | |
2689 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2690 | for (i = 0; i < 4; i++) { |
2691 | /* Set the latency optimal bit */ | |
2692 | data = (i == 1) ? 0x0 : 0x6; | |
2693 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2694 | data << DPIO_FRC_LATENCY_SHFIT); | |
2695 | ||
2696 | /* Set the upar bit */ | |
2697 | data = (i == 1) ? 0x0 : 0x1; | |
2698 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2699 | data << DPIO_UPAR_SHIFT); | |
2700 | } | |
2701 | ||
2702 | /* Data lane stagger programming */ | |
2703 | /* FIXME: Fix up value only after power analysis */ | |
2704 | ||
2705 | mutex_unlock(&dev_priv->dpio_lock); | |
2706 | ||
e4a1d846 | 2707 | intel_enable_dp(encoder); |
e4a1d846 CML |
2708 | } |
2709 | ||
9197c88b VS |
2710 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2711 | { | |
2712 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2713 | struct drm_device *dev = encoder->base.dev; | |
2714 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2715 | struct intel_crtc *intel_crtc = | |
2716 | to_intel_crtc(encoder->base.crtc); | |
2717 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2718 | enum pipe pipe = intel_crtc->pipe; | |
2719 | u32 val; | |
2720 | ||
625695f8 VS |
2721 | intel_dp_prepare(encoder); |
2722 | ||
9197c88b VS |
2723 | mutex_lock(&dev_priv->dpio_lock); |
2724 | ||
b9e5ac3c VS |
2725 | /* program left/right clock distribution */ |
2726 | if (pipe != PIPE_B) { | |
2727 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2728 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2729 | if (ch == DPIO_CH0) | |
2730 | val |= CHV_BUFLEFTENA1_FORCE; | |
2731 | if (ch == DPIO_CH1) | |
2732 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2733 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2734 | } else { | |
2735 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2736 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2737 | if (ch == DPIO_CH0) | |
2738 | val |= CHV_BUFLEFTENA2_FORCE; | |
2739 | if (ch == DPIO_CH1) | |
2740 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2741 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2742 | } | |
2743 | ||
9197c88b VS |
2744 | /* program clock channel usage */ |
2745 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2746 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2747 | if (pipe != PIPE_B) | |
2748 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2749 | else | |
2750 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2751 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2752 | ||
2753 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2754 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2755 | if (pipe != PIPE_B) | |
2756 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2757 | else | |
2758 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2759 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2760 | ||
2761 | /* | |
2762 | * This a a bit weird since generally CL | |
2763 | * matches the pipe, but here we need to | |
2764 | * pick the CL based on the port. | |
2765 | */ | |
2766 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2767 | if (pipe != PIPE_B) | |
2768 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2769 | else | |
2770 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2771 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2772 | ||
2773 | mutex_unlock(&dev_priv->dpio_lock); | |
2774 | } | |
2775 | ||
a4fc5ed6 | 2776 | /* |
df0c237d JB |
2777 | * Native read with retry for link status and receiver capability reads for |
2778 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2779 | * |
2780 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2781 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2782 | */ |
9d1a1031 JN |
2783 | static ssize_t |
2784 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2785 | void *buffer, size_t size) | |
a4fc5ed6 | 2786 | { |
9d1a1031 JN |
2787 | ssize_t ret; |
2788 | int i; | |
61da5fab | 2789 | |
f6a19066 VS |
2790 | /* |
2791 | * Sometime we just get the same incorrect byte repeated | |
2792 | * over the entire buffer. Doing just one throw away read | |
2793 | * initially seems to "solve" it. | |
2794 | */ | |
2795 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
2796 | ||
61da5fab | 2797 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2798 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2799 | if (ret == size) | |
2800 | return ret; | |
61da5fab JB |
2801 | msleep(1); |
2802 | } | |
a4fc5ed6 | 2803 | |
9d1a1031 | 2804 | return ret; |
a4fc5ed6 KP |
2805 | } |
2806 | ||
2807 | /* | |
2808 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2809 | * link status information | |
2810 | */ | |
2811 | static bool | |
93f62dad | 2812 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2813 | { |
9d1a1031 JN |
2814 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2815 | DP_LANE0_1_STATUS, | |
2816 | link_status, | |
2817 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2818 | } |
2819 | ||
1100244e | 2820 | /* These are source-specific values. */ |
a4fc5ed6 | 2821 | static uint8_t |
1a2eb460 | 2822 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2823 | { |
30add22d | 2824 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 2825 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 2826 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2827 | |
7ad14a29 SJ |
2828 | if (INTEL_INFO(dev)->gen >= 9) { |
2829 | if (dev_priv->vbt.edp_low_vswing && port == PORT_A) | |
2830 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
5a9d1f1a | 2831 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 2832 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 2833 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2834 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2835 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2836 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2837 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2838 | else |
bd60018a | 2839 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2840 | } |
2841 | ||
2842 | static uint8_t | |
2843 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2844 | { | |
30add22d | 2845 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2846 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2847 | |
5a9d1f1a DL |
2848 | if (INTEL_INFO(dev)->gen >= 9) { |
2849 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2850 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
2851 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2852 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2853 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2854 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2855 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
2856 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
2857 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
2858 | default: |
2859 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
2860 | } | |
2861 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 2862 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2863 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2864 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2865 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2866 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2867 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2868 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2869 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2870 | default: |
bd60018a | 2871 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2872 | } |
e2fa6fba P |
2873 | } else if (IS_VALLEYVIEW(dev)) { |
2874 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2875 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2876 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2877 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2878 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2879 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2880 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2881 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2882 | default: |
bd60018a | 2883 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2884 | } |
bc7d38a4 | 2885 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2886 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2887 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2888 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2889 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2890 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2891 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2892 | default: |
bd60018a | 2893 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2894 | } |
2895 | } else { | |
2896 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2897 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2898 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2899 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2900 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2901 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2902 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2903 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2904 | default: |
bd60018a | 2905 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2906 | } |
a4fc5ed6 KP |
2907 | } |
2908 | } | |
2909 | ||
e2fa6fba P |
2910 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2911 | { | |
2912 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2913 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2914 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2915 | struct intel_crtc *intel_crtc = |
2916 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2917 | unsigned long demph_reg_value, preemph_reg_value, |
2918 | uniqtranscale_reg_value; | |
2919 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2920 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2921 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2922 | |
2923 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2924 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2925 | preemph_reg_value = 0x0004000; |
2926 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2927 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2928 | demph_reg_value = 0x2B405555; |
2929 | uniqtranscale_reg_value = 0x552AB83A; | |
2930 | break; | |
bd60018a | 2931 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2932 | demph_reg_value = 0x2B404040; |
2933 | uniqtranscale_reg_value = 0x5548B83A; | |
2934 | break; | |
bd60018a | 2935 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2936 | demph_reg_value = 0x2B245555; |
2937 | uniqtranscale_reg_value = 0x5560B83A; | |
2938 | break; | |
bd60018a | 2939 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
2940 | demph_reg_value = 0x2B405555; |
2941 | uniqtranscale_reg_value = 0x5598DA3A; | |
2942 | break; | |
2943 | default: | |
2944 | return 0; | |
2945 | } | |
2946 | break; | |
bd60018a | 2947 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
2948 | preemph_reg_value = 0x0002000; |
2949 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2950 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2951 | demph_reg_value = 0x2B404040; |
2952 | uniqtranscale_reg_value = 0x5552B83A; | |
2953 | break; | |
bd60018a | 2954 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2955 | demph_reg_value = 0x2B404848; |
2956 | uniqtranscale_reg_value = 0x5580B83A; | |
2957 | break; | |
bd60018a | 2958 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2959 | demph_reg_value = 0x2B404040; |
2960 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2961 | break; | |
2962 | default: | |
2963 | return 0; | |
2964 | } | |
2965 | break; | |
bd60018a | 2966 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
2967 | preemph_reg_value = 0x0000000; |
2968 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2969 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2970 | demph_reg_value = 0x2B305555; |
2971 | uniqtranscale_reg_value = 0x5570B83A; | |
2972 | break; | |
bd60018a | 2973 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2974 | demph_reg_value = 0x2B2B4040; |
2975 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2976 | break; | |
2977 | default: | |
2978 | return 0; | |
2979 | } | |
2980 | break; | |
bd60018a | 2981 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
2982 | preemph_reg_value = 0x0006000; |
2983 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2984 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2985 | demph_reg_value = 0x1B405555; |
2986 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2987 | break; | |
2988 | default: | |
2989 | return 0; | |
2990 | } | |
2991 | break; | |
2992 | default: | |
2993 | return 0; | |
2994 | } | |
2995 | ||
0980a60f | 2996 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
2997 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
2998 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
2999 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3000 | uniqtranscale_reg_value); |
ab3c759a CML |
3001 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3002 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3003 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3004 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3005 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3006 | |
3007 | return 0; | |
3008 | } | |
3009 | ||
e4a1d846 CML |
3010 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
3011 | { | |
3012 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3013 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3014 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3015 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3016 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3017 | uint8_t train_set = intel_dp->train_set[0]; |
3018 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3019 | enum pipe pipe = intel_crtc->pipe; |
3020 | int i; | |
e4a1d846 CML |
3021 | |
3022 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3023 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3024 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3025 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3026 | deemph_reg_value = 128; |
3027 | margin_reg_value = 52; | |
3028 | break; | |
bd60018a | 3029 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3030 | deemph_reg_value = 128; |
3031 | margin_reg_value = 77; | |
3032 | break; | |
bd60018a | 3033 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3034 | deemph_reg_value = 128; |
3035 | margin_reg_value = 102; | |
3036 | break; | |
bd60018a | 3037 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3038 | deemph_reg_value = 128; |
3039 | margin_reg_value = 154; | |
3040 | /* FIXME extra to set for 1200 */ | |
3041 | break; | |
3042 | default: | |
3043 | return 0; | |
3044 | } | |
3045 | break; | |
bd60018a | 3046 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3047 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3048 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3049 | deemph_reg_value = 85; |
3050 | margin_reg_value = 78; | |
3051 | break; | |
bd60018a | 3052 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3053 | deemph_reg_value = 85; |
3054 | margin_reg_value = 116; | |
3055 | break; | |
bd60018a | 3056 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3057 | deemph_reg_value = 85; |
3058 | margin_reg_value = 154; | |
3059 | break; | |
3060 | default: | |
3061 | return 0; | |
3062 | } | |
3063 | break; | |
bd60018a | 3064 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3065 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3066 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3067 | deemph_reg_value = 64; |
3068 | margin_reg_value = 104; | |
3069 | break; | |
bd60018a | 3070 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3071 | deemph_reg_value = 64; |
3072 | margin_reg_value = 154; | |
3073 | break; | |
3074 | default: | |
3075 | return 0; | |
3076 | } | |
3077 | break; | |
bd60018a | 3078 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3079 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3080 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3081 | deemph_reg_value = 43; |
3082 | margin_reg_value = 154; | |
3083 | break; | |
3084 | default: | |
3085 | return 0; | |
3086 | } | |
3087 | break; | |
3088 | default: | |
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | mutex_lock(&dev_priv->dpio_lock); | |
3093 | ||
3094 | /* Clear calc init */ | |
1966e59e VS |
3095 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3096 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3097 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3098 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3099 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3100 | ||
3101 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3102 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3103 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3104 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3105 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3106 | |
a02ef3c7 VS |
3107 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3108 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3109 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3110 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3111 | ||
3112 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3113 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3114 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3115 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3116 | ||
e4a1d846 | 3117 | /* Program swing deemph */ |
f72df8db VS |
3118 | for (i = 0; i < 4; i++) { |
3119 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3120 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3121 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3122 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3123 | } | |
e4a1d846 CML |
3124 | |
3125 | /* Program swing margin */ | |
f72df8db VS |
3126 | for (i = 0; i < 4; i++) { |
3127 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3128 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3129 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3130 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3131 | } | |
e4a1d846 CML |
3132 | |
3133 | /* Disable unique transition scale */ | |
f72df8db VS |
3134 | for (i = 0; i < 4; i++) { |
3135 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3136 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3137 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3138 | } | |
e4a1d846 CML |
3139 | |
3140 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3141 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3142 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3143 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3144 | |
3145 | /* | |
3146 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3147 | * for ch1. Might be a typo in the doc. | |
3148 | * For now, for this unique transition scale selection, set bit | |
3149 | * 27 for ch0 and ch1. | |
3150 | */ | |
f72df8db VS |
3151 | for (i = 0; i < 4; i++) { |
3152 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3153 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3154 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3155 | } | |
e4a1d846 | 3156 | |
f72df8db VS |
3157 | for (i = 0; i < 4; i++) { |
3158 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3159 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3160 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3161 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3162 | } | |
e4a1d846 CML |
3163 | } |
3164 | ||
3165 | /* Start swing calculation */ | |
1966e59e VS |
3166 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3167 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3168 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3169 | ||
3170 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3171 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3172 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3173 | |
3174 | /* LRC Bypass */ | |
3175 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3176 | val |= DPIO_LRC_BYPASS; | |
3177 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3178 | ||
3179 | mutex_unlock(&dev_priv->dpio_lock); | |
3180 | ||
3181 | return 0; | |
3182 | } | |
3183 | ||
a4fc5ed6 | 3184 | static void |
0301b3ac JN |
3185 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3186 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3187 | { |
3188 | uint8_t v = 0; | |
3189 | uint8_t p = 0; | |
3190 | int lane; | |
1a2eb460 KP |
3191 | uint8_t voltage_max; |
3192 | uint8_t preemph_max; | |
a4fc5ed6 | 3193 | |
33a34e4e | 3194 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3195 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3196 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3197 | |
3198 | if (this_v > v) | |
3199 | v = this_v; | |
3200 | if (this_p > p) | |
3201 | p = this_p; | |
3202 | } | |
3203 | ||
1a2eb460 | 3204 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3205 | if (v >= voltage_max) |
3206 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3207 | |
1a2eb460 KP |
3208 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3209 | if (p >= preemph_max) | |
3210 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3211 | |
3212 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3213 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3214 | } |
3215 | ||
3216 | static uint32_t | |
f0a3424e | 3217 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3218 | { |
3cf2efb1 | 3219 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3220 | |
3cf2efb1 | 3221 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3222 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3223 | default: |
3224 | signal_levels |= DP_VOLTAGE_0_4; | |
3225 | break; | |
bd60018a | 3226 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3227 | signal_levels |= DP_VOLTAGE_0_6; |
3228 | break; | |
bd60018a | 3229 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3230 | signal_levels |= DP_VOLTAGE_0_8; |
3231 | break; | |
bd60018a | 3232 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3233 | signal_levels |= DP_VOLTAGE_1_2; |
3234 | break; | |
3235 | } | |
3cf2efb1 | 3236 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3237 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3238 | default: |
3239 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3240 | break; | |
bd60018a | 3241 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3242 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3243 | break; | |
bd60018a | 3244 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3245 | signal_levels |= DP_PRE_EMPHASIS_6; |
3246 | break; | |
bd60018a | 3247 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3248 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3249 | break; | |
3250 | } | |
3251 | return signal_levels; | |
3252 | } | |
3253 | ||
e3421a18 ZW |
3254 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3255 | static uint32_t | |
3256 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
3257 | { | |
3c5a62b5 YL |
3258 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3259 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3260 | switch (signal_levels) { | |
bd60018a SJ |
3261 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3262 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3263 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3264 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3265 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3266 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3267 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3268 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3269 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3270 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3271 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3272 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3273 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3274 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3275 | default: |
3c5a62b5 YL |
3276 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3277 | "0x%x\n", signal_levels); | |
3278 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3279 | } |
3280 | } | |
3281 | ||
1a2eb460 KP |
3282 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3283 | static uint32_t | |
3284 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
3285 | { | |
3286 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3287 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3288 | switch (signal_levels) { | |
bd60018a | 3289 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3290 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3291 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3292 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3293 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3294 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3295 | ||
bd60018a | 3296 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3297 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3298 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3299 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3300 | ||
bd60018a | 3301 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3302 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3303 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3304 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3305 | ||
3306 | default: | |
3307 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3308 | "0x%x\n", signal_levels); | |
3309 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3310 | } | |
3311 | } | |
3312 | ||
d6c0d722 PZ |
3313 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3314 | static uint32_t | |
f0a3424e | 3315 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3316 | { |
d6c0d722 PZ |
3317 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3318 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3319 | switch (signal_levels) { | |
bd60018a | 3320 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3321 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3322 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3323 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3324 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3325 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3326 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3327 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3328 | |
bd60018a | 3329 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3330 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3331 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3332 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3333 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3334 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3335 | |
bd60018a | 3336 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3337 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3338 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3339 | return DDI_BUF_TRANS_SELECT(8); |
7ad14a29 SJ |
3340 | |
3341 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3342 | return DDI_BUF_TRANS_SELECT(9); | |
d6c0d722 PZ |
3343 | default: |
3344 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3345 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3346 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3347 | } |
a4fc5ed6 KP |
3348 | } |
3349 | ||
f0a3424e PZ |
3350 | /* Properly updates "DP" with the correct signal levels. */ |
3351 | static void | |
3352 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3353 | { | |
3354 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3355 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3356 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3357 | uint32_t signal_levels, mask; | |
3358 | uint8_t train_set = intel_dp->train_set[0]; | |
3359 | ||
5a9d1f1a | 3360 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
f0a3424e PZ |
3361 | signal_levels = intel_hsw_signal_levels(train_set); |
3362 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
3363 | } else if (IS_CHERRYVIEW(dev)) { |
3364 | signal_levels = intel_chv_signal_levels(intel_dp); | |
3365 | mask = 0; | |
e2fa6fba P |
3366 | } else if (IS_VALLEYVIEW(dev)) { |
3367 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
3368 | mask = 0; | |
bc7d38a4 | 3369 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
3370 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
3371 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 3372 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
3373 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
3374 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
3375 | } else { | |
3376 | signal_levels = intel_gen4_signal_levels(train_set); | |
3377 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
3378 | } | |
3379 | ||
3380 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3381 | ||
3382 | *DP = (*DP & ~mask) | signal_levels; | |
3383 | } | |
3384 | ||
a4fc5ed6 | 3385 | static bool |
ea5b213a | 3386 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3387 | uint32_t *DP, |
58e10eb9 | 3388 | uint8_t dp_train_pat) |
a4fc5ed6 | 3389 | { |
174edf1f PZ |
3390 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3391 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3392 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3393 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3394 | int ret, len; | |
a4fc5ed6 | 3395 | |
7b13b58a | 3396 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3397 | |
70aff66c | 3398 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3399 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3400 | |
2cdfe6c8 JN |
3401 | buf[0] = dp_train_pat; |
3402 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3403 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3404 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3405 | len = 1; | |
3406 | } else { | |
3407 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3408 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3409 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3410 | } |
a4fc5ed6 | 3411 | |
9d1a1031 JN |
3412 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3413 | buf, len); | |
2cdfe6c8 JN |
3414 | |
3415 | return ret == len; | |
a4fc5ed6 KP |
3416 | } |
3417 | ||
70aff66c JN |
3418 | static bool |
3419 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3420 | uint8_t dp_train_pat) | |
3421 | { | |
953d22e8 | 3422 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3423 | intel_dp_set_signal_levels(intel_dp, DP); |
3424 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3425 | } | |
3426 | ||
3427 | static bool | |
3428 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3429 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3430 | { |
3431 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3432 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3433 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3434 | int ret; | |
3435 | ||
3436 | intel_get_adjust_train(intel_dp, link_status); | |
3437 | intel_dp_set_signal_levels(intel_dp, DP); | |
3438 | ||
3439 | I915_WRITE(intel_dp->output_reg, *DP); | |
3440 | POSTING_READ(intel_dp->output_reg); | |
3441 | ||
9d1a1031 JN |
3442 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3443 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3444 | |
3445 | return ret == intel_dp->lane_count; | |
3446 | } | |
3447 | ||
3ab9c637 ID |
3448 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3449 | { | |
3450 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3451 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3452 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3453 | enum port port = intel_dig_port->port; | |
3454 | uint32_t val; | |
3455 | ||
3456 | if (!HAS_DDI(dev)) | |
3457 | return; | |
3458 | ||
3459 | val = I915_READ(DP_TP_CTL(port)); | |
3460 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3461 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3462 | I915_WRITE(DP_TP_CTL(port), val); | |
3463 | ||
3464 | /* | |
3465 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3466 | * we need to set idle transmission mode is to work around a HW issue | |
3467 | * where we enable the pipe while not in idle link-training mode. | |
3468 | * In this case there is requirement to wait for a minimum number of | |
3469 | * idle patterns to be sent. | |
3470 | */ | |
3471 | if (port == PORT_A) | |
3472 | return; | |
3473 | ||
3474 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3475 | 1)) | |
3476 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3477 | } | |
3478 | ||
33a34e4e | 3479 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3480 | void |
33a34e4e | 3481 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3482 | { |
da63a9f2 | 3483 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3484 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3485 | int i; |
3486 | uint8_t voltage; | |
cdb0e95b | 3487 | int voltage_tries, loop_tries; |
ea5b213a | 3488 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3489 | uint8_t link_config[2]; |
a4fc5ed6 | 3490 | |
affa9354 | 3491 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3492 | intel_ddi_prepare_link_retrain(encoder); |
3493 | ||
3cf2efb1 | 3494 | /* Write the link configuration data */ |
6aba5b6c JN |
3495 | link_config[0] = intel_dp->link_bw; |
3496 | link_config[1] = intel_dp->lane_count; | |
3497 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3498 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3499 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
bc27b7d3 | 3500 | if (intel_dp->num_supported_rates) |
a8f3ef61 SJ |
3501 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
3502 | &intel_dp->rate_select, 1); | |
6aba5b6c JN |
3503 | |
3504 | link_config[0] = 0; | |
3505 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3506 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3507 | |
3508 | DP |= DP_PORT_EN; | |
1a2eb460 | 3509 | |
70aff66c JN |
3510 | /* clock recovery */ |
3511 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3512 | DP_TRAINING_PATTERN_1 | | |
3513 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3514 | DRM_ERROR("failed to enable link training\n"); | |
3515 | return; | |
3516 | } | |
3517 | ||
a4fc5ed6 | 3518 | voltage = 0xff; |
cdb0e95b KP |
3519 | voltage_tries = 0; |
3520 | loop_tries = 0; | |
a4fc5ed6 | 3521 | for (;;) { |
70aff66c | 3522 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3523 | |
a7c9655f | 3524 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3525 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3526 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3527 | break; |
93f62dad | 3528 | } |
a4fc5ed6 | 3529 | |
01916270 | 3530 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3531 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3532 | break; |
3533 | } | |
3534 | ||
3535 | /* Check to see if we've tried the max voltage */ | |
3536 | for (i = 0; i < intel_dp->lane_count; i++) | |
3537 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3538 | break; |
3b4f819d | 3539 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3540 | ++loop_tries; |
3541 | if (loop_tries == 5) { | |
3def84b3 | 3542 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3543 | break; |
3544 | } | |
70aff66c JN |
3545 | intel_dp_reset_link_train(intel_dp, &DP, |
3546 | DP_TRAINING_PATTERN_1 | | |
3547 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3548 | voltage_tries = 0; |
3549 | continue; | |
3550 | } | |
a4fc5ed6 | 3551 | |
3cf2efb1 | 3552 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3553 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3554 | ++voltage_tries; |
b06fbda3 | 3555 | if (voltage_tries == 5) { |
3def84b3 | 3556 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3557 | break; |
3558 | } | |
3559 | } else | |
3560 | voltage_tries = 0; | |
3561 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3562 | |
70aff66c JN |
3563 | /* Update training set as requested by target */ |
3564 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3565 | DRM_ERROR("failed to update link training\n"); | |
3566 | break; | |
3567 | } | |
a4fc5ed6 KP |
3568 | } |
3569 | ||
33a34e4e JB |
3570 | intel_dp->DP = DP; |
3571 | } | |
3572 | ||
c19b0669 | 3573 | void |
33a34e4e JB |
3574 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3575 | { | |
33a34e4e | 3576 | bool channel_eq = false; |
37f80975 | 3577 | int tries, cr_tries; |
33a34e4e | 3578 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3579 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3580 | ||
3581 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3582 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3583 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3584 | |
a4fc5ed6 | 3585 | /* channel equalization */ |
70aff66c | 3586 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3587 | training_pattern | |
70aff66c JN |
3588 | DP_LINK_SCRAMBLING_DISABLE)) { |
3589 | DRM_ERROR("failed to start channel equalization\n"); | |
3590 | return; | |
3591 | } | |
3592 | ||
a4fc5ed6 | 3593 | tries = 0; |
37f80975 | 3594 | cr_tries = 0; |
a4fc5ed6 KP |
3595 | channel_eq = false; |
3596 | for (;;) { | |
70aff66c | 3597 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3598 | |
37f80975 JB |
3599 | if (cr_tries > 5) { |
3600 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3601 | break; |
3602 | } | |
3603 | ||
a7c9655f | 3604 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3605 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3606 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3607 | break; |
70aff66c | 3608 | } |
a4fc5ed6 | 3609 | |
37f80975 | 3610 | /* Make sure clock is still ok */ |
01916270 | 3611 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3612 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3613 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3614 | training_pattern | |
70aff66c | 3615 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3616 | cr_tries++; |
3617 | continue; | |
3618 | } | |
3619 | ||
1ffdff13 | 3620 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3621 | channel_eq = true; |
3622 | break; | |
3623 | } | |
a4fc5ed6 | 3624 | |
37f80975 JB |
3625 | /* Try 5 times, then try clock recovery if that fails */ |
3626 | if (tries > 5) { | |
37f80975 | 3627 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3628 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3629 | training_pattern | |
70aff66c | 3630 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3631 | tries = 0; |
3632 | cr_tries++; | |
3633 | continue; | |
3634 | } | |
a4fc5ed6 | 3635 | |
70aff66c JN |
3636 | /* Update training set as requested by target */ |
3637 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3638 | DRM_ERROR("failed to update link training\n"); | |
3639 | break; | |
3640 | } | |
3cf2efb1 | 3641 | ++tries; |
869184a6 | 3642 | } |
3cf2efb1 | 3643 | |
3ab9c637 ID |
3644 | intel_dp_set_idle_link_train(intel_dp); |
3645 | ||
3646 | intel_dp->DP = DP; | |
3647 | ||
d6c0d722 | 3648 | if (channel_eq) |
07f42258 | 3649 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3650 | |
3ab9c637 ID |
3651 | } |
3652 | ||
3653 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3654 | { | |
70aff66c | 3655 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3656 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3657 | } |
3658 | ||
3659 | static void | |
ea5b213a | 3660 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3661 | { |
da63a9f2 | 3662 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3663 | enum port port = intel_dig_port->port; |
da63a9f2 | 3664 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3665 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3666 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3667 | |
bc76e320 | 3668 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3669 | return; |
3670 | ||
0c33d8d7 | 3671 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3672 | return; |
3673 | ||
28c97730 | 3674 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3675 | |
bc7d38a4 | 3676 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3677 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3678 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3679 | } else { |
aad3d14d VS |
3680 | if (IS_CHERRYVIEW(dev)) |
3681 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3682 | else | |
3683 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3684 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3685 | } |
fe255d00 | 3686 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3687 | |
493a7081 | 3688 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3689 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
5bddd17f EA |
3690 | /* Hardware workaround: leaving our transcoder select |
3691 | * set to transcoder B while it's off will prevent the | |
3692 | * corresponding HDMI output on transcoder A. | |
3693 | * | |
3694 | * Combine this with another hardware workaround: | |
3695 | * transcoder select bit can only be cleared while the | |
3696 | * port is enabled. | |
3697 | */ | |
3698 | DP &= ~DP_PIPEB_SELECT; | |
3699 | I915_WRITE(intel_dp->output_reg, DP); | |
0ca09685 | 3700 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3701 | } |
3702 | ||
832afda6 | 3703 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3704 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3705 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3706 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3707 | } |
3708 | ||
26d61aad KP |
3709 | static bool |
3710 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3711 | { |
a031d709 RV |
3712 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3713 | struct drm_device *dev = dig_port->base.base.dev; | |
3714 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3715 | uint8_t rev; |
a031d709 | 3716 | |
9d1a1031 JN |
3717 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3718 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3719 | return false; /* aux transfer failed */ |
92fd8fd1 | 3720 | |
a8e98153 | 3721 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3722 | |
edb39244 AJ |
3723 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3724 | return false; /* DPCD not present */ | |
3725 | ||
2293bb5c SK |
3726 | /* Check if the panel supports PSR */ |
3727 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3728 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3729 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3730 | intel_dp->psr_dpcd, | |
3731 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3732 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3733 | dev_priv->psr.sink_support = true; | |
50003939 | 3734 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3735 | } |
50003939 JN |
3736 | } |
3737 | ||
7809a611 | 3738 | /* Training Pattern 3 support, both source and sink */ |
06ea66b6 | 3739 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
7809a611 JN |
3740 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
3741 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { | |
06ea66b6 | 3742 | intel_dp->use_tps3 = true; |
f8d8a672 | 3743 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3744 | } else |
3745 | intel_dp->use_tps3 = false; | |
3746 | ||
fc0f8e25 SJ |
3747 | /* Intermediate frequency support */ |
3748 | if (is_edp(intel_dp) && | |
3749 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3750 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
3751 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
ea2d8a42 VS |
3752 | __le16 supported_rates[DP_MAX_SUPPORTED_RATES]; |
3753 | int i; | |
3754 | ||
fc0f8e25 SJ |
3755 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
3756 | DP_SUPPORTED_LINK_RATES, | |
ea2d8a42 VS |
3757 | supported_rates, |
3758 | sizeof(supported_rates)); | |
3759 | ||
3760 | for (i = 0; i < ARRAY_SIZE(supported_rates); i++) { | |
3761 | int val = le16_to_cpu(supported_rates[i]); | |
3762 | ||
3763 | if (val == 0) | |
3764 | break; | |
3765 | ||
3766 | intel_dp->supported_rates[i] = val * 200; | |
3767 | } | |
3768 | intel_dp->num_supported_rates = i; | |
fc0f8e25 | 3769 | } |
edb39244 AJ |
3770 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3771 | DP_DWN_STRM_PORT_PRESENT)) | |
3772 | return true; /* native DP sink */ | |
3773 | ||
3774 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3775 | return true; /* no per-port downstream info */ | |
3776 | ||
9d1a1031 JN |
3777 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3778 | intel_dp->downstream_ports, | |
3779 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3780 | return false; /* downstream port status fetch failed */ |
3781 | ||
3782 | return true; | |
92fd8fd1 KP |
3783 | } |
3784 | ||
0d198328 AJ |
3785 | static void |
3786 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3787 | { | |
3788 | u8 buf[3]; | |
3789 | ||
3790 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3791 | return; | |
3792 | ||
9d1a1031 | 3793 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3794 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3795 | buf[0], buf[1], buf[2]); | |
3796 | ||
9d1a1031 | 3797 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3798 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3799 | buf[0], buf[1], buf[2]); | |
3800 | } | |
3801 | ||
0e32b39c DA |
3802 | static bool |
3803 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3804 | { | |
3805 | u8 buf[1]; | |
3806 | ||
3807 | if (!intel_dp->can_mst) | |
3808 | return false; | |
3809 | ||
3810 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3811 | return false; | |
3812 | ||
0e32b39c DA |
3813 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3814 | if (buf[0] & DP_MST_CAP) { | |
3815 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3816 | intel_dp->is_mst = true; | |
3817 | } else { | |
3818 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3819 | intel_dp->is_mst = false; | |
3820 | } | |
3821 | } | |
0e32b39c DA |
3822 | |
3823 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3824 | return intel_dp->is_mst; | |
3825 | } | |
3826 | ||
d2e216d0 RV |
3827 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3828 | { | |
3829 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3830 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3831 | struct intel_crtc *intel_crtc = | |
3832 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ad9dc91b RV |
3833 | u8 buf; |
3834 | int test_crc_count; | |
3835 | int attempts = 6; | |
d2e216d0 | 3836 | |
ad9dc91b | 3837 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3838 | return -EIO; |
d2e216d0 | 3839 | |
ad9dc91b | 3840 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
d2e216d0 RV |
3841 | return -ENOTTY; |
3842 | ||
1dda5f93 RV |
3843 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3844 | return -EIO; | |
3845 | ||
9d1a1031 | 3846 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
ce31d9f4 | 3847 | buf | DP_TEST_SINK_START) < 0) |
bda0381e | 3848 | return -EIO; |
d2e216d0 | 3849 | |
1dda5f93 | 3850 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3851 | return -EIO; |
ad9dc91b | 3852 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
d2e216d0 | 3853 | |
ad9dc91b | 3854 | do { |
1dda5f93 RV |
3855 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
3856 | DP_TEST_SINK_MISC, &buf) < 0) | |
3857 | return -EIO; | |
ad9dc91b RV |
3858 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
3859 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); | |
3860 | ||
3861 | if (attempts == 0) { | |
90bd1f46 DV |
3862 | DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n"); |
3863 | return -ETIMEDOUT; | |
ad9dc91b | 3864 | } |
d2e216d0 | 3865 | |
9d1a1031 | 3866 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
bda0381e | 3867 | return -EIO; |
d2e216d0 | 3868 | |
1dda5f93 RV |
3869 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3870 | return -EIO; | |
3871 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, | |
3872 | buf & ~DP_TEST_SINK_START) < 0) | |
3873 | return -EIO; | |
ce31d9f4 | 3874 | |
d2e216d0 RV |
3875 | return 0; |
3876 | } | |
3877 | ||
a60f0e38 JB |
3878 | static bool |
3879 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3880 | { | |
9d1a1031 JN |
3881 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3882 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3883 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3884 | } |
3885 | ||
0e32b39c DA |
3886 | static bool |
3887 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3888 | { | |
3889 | int ret; | |
3890 | ||
3891 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3892 | DP_SINK_COUNT_ESI, | |
3893 | sink_irq_vector, 14); | |
3894 | if (ret != 14) | |
3895 | return false; | |
3896 | ||
3897 | return true; | |
3898 | } | |
3899 | ||
a60f0e38 JB |
3900 | static void |
3901 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3902 | { | |
3903 | /* NAK by default */ | |
9d1a1031 | 3904 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3905 | } |
3906 | ||
0e32b39c DA |
3907 | static int |
3908 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3909 | { | |
3910 | bool bret; | |
3911 | ||
3912 | if (intel_dp->is_mst) { | |
3913 | u8 esi[16] = { 0 }; | |
3914 | int ret = 0; | |
3915 | int retry; | |
3916 | bool handled; | |
3917 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3918 | go_again: | |
3919 | if (bret == true) { | |
3920 | ||
3921 | /* check link status - esi[10] = 0x200c */ | |
3922 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3923 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3924 | intel_dp_start_link_train(intel_dp); | |
3925 | intel_dp_complete_link_train(intel_dp); | |
3926 | intel_dp_stop_link_train(intel_dp); | |
3927 | } | |
3928 | ||
6f34cc39 | 3929 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
3930 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
3931 | ||
3932 | if (handled) { | |
3933 | for (retry = 0; retry < 3; retry++) { | |
3934 | int wret; | |
3935 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3936 | DP_SINK_COUNT_ESI+1, | |
3937 | &esi[1], 3); | |
3938 | if (wret == 3) { | |
3939 | break; | |
3940 | } | |
3941 | } | |
3942 | ||
3943 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3944 | if (bret == true) { | |
6f34cc39 | 3945 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
3946 | goto go_again; |
3947 | } | |
3948 | } else | |
3949 | ret = 0; | |
3950 | ||
3951 | return ret; | |
3952 | } else { | |
3953 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3954 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3955 | intel_dp->is_mst = false; | |
3956 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3957 | /* send a hotplug event */ | |
3958 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3959 | } | |
3960 | } | |
3961 | return -EINVAL; | |
3962 | } | |
3963 | ||
a4fc5ed6 KP |
3964 | /* |
3965 | * According to DP spec | |
3966 | * 5.1.2: | |
3967 | * 1. Read DPCD | |
3968 | * 2. Configure link according to Receiver Capabilities | |
3969 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3970 | * 4. Check link status on receipt of hot-plug interrupt | |
3971 | */ | |
a5146200 | 3972 | static void |
ea5b213a | 3973 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3974 | { |
5b215bcf | 3975 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 3976 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3977 | u8 sink_irq_vector; |
93f62dad | 3978 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3979 | |
5b215bcf DA |
3980 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
3981 | ||
da63a9f2 | 3982 | if (!intel_encoder->connectors_active) |
d2b996ac | 3983 | return; |
59cd09e1 | 3984 | |
da63a9f2 | 3985 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3986 | return; |
3987 | ||
1a125d8a ID |
3988 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
3989 | return; | |
3990 | ||
92fd8fd1 | 3991 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3992 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3993 | return; |
3994 | } | |
3995 | ||
92fd8fd1 | 3996 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3997 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3998 | return; |
3999 | } | |
4000 | ||
a60f0e38 JB |
4001 | /* Try to read the source of the interrupt */ |
4002 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4003 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4004 | /* Clear interrupt source */ | |
9d1a1031 JN |
4005 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4006 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4007 | sink_irq_vector); | |
a60f0e38 JB |
4008 | |
4009 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4010 | intel_dp_handle_test_request(intel_dp); | |
4011 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4012 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4013 | } | |
4014 | ||
1ffdff13 | 4015 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4016 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4017 | intel_encoder->base.name); |
33a34e4e JB |
4018 | intel_dp_start_link_train(intel_dp); |
4019 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4020 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4021 | } |
a4fc5ed6 | 4022 | } |
a4fc5ed6 | 4023 | |
caf9ab24 | 4024 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4025 | static enum drm_connector_status |
26d61aad | 4026 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4027 | { |
caf9ab24 | 4028 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4029 | uint8_t type; |
4030 | ||
4031 | if (!intel_dp_get_dpcd(intel_dp)) | |
4032 | return connector_status_disconnected; | |
4033 | ||
4034 | /* if there's no downstream port, we're done */ | |
4035 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4036 | return connector_status_connected; |
caf9ab24 AJ |
4037 | |
4038 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4039 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4040 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4041 | uint8_t reg; |
9d1a1031 JN |
4042 | |
4043 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4044 | ®, 1) < 0) | |
caf9ab24 | 4045 | return connector_status_unknown; |
9d1a1031 | 4046 | |
23235177 AJ |
4047 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4048 | : connector_status_disconnected; | |
caf9ab24 AJ |
4049 | } |
4050 | ||
4051 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4052 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4053 | return connector_status_connected; |
caf9ab24 AJ |
4054 | |
4055 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4056 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4057 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4058 | if (type == DP_DS_PORT_TYPE_VGA || | |
4059 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4060 | return connector_status_unknown; | |
4061 | } else { | |
4062 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4063 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4064 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4065 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4066 | return connector_status_unknown; | |
4067 | } | |
caf9ab24 AJ |
4068 | |
4069 | /* Anything else is out of spec, warn and ignore */ | |
4070 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4071 | return connector_status_disconnected; |
71ba9000 AJ |
4072 | } |
4073 | ||
d410b56d CW |
4074 | static enum drm_connector_status |
4075 | edp_detect(struct intel_dp *intel_dp) | |
4076 | { | |
4077 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4078 | enum drm_connector_status status; | |
4079 | ||
4080 | status = intel_panel_detect(dev); | |
4081 | if (status == connector_status_unknown) | |
4082 | status = connector_status_connected; | |
4083 | ||
4084 | return status; | |
4085 | } | |
4086 | ||
5eb08b69 | 4087 | static enum drm_connector_status |
a9756bb5 | 4088 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4089 | { |
30add22d | 4090 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4091 | struct drm_i915_private *dev_priv = dev->dev_private; |
4092 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4093 | |
1b469639 DL |
4094 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4095 | return connector_status_disconnected; | |
4096 | ||
26d61aad | 4097 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4098 | } |
4099 | ||
2a592bec DA |
4100 | static int g4x_digital_port_connected(struct drm_device *dev, |
4101 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4102 | { |
a4fc5ed6 | 4103 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4104 | uint32_t bit; |
5eb08b69 | 4105 | |
232a6ee9 TP |
4106 | if (IS_VALLEYVIEW(dev)) { |
4107 | switch (intel_dig_port->port) { | |
4108 | case PORT_B: | |
4109 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4110 | break; | |
4111 | case PORT_C: | |
4112 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4113 | break; | |
4114 | case PORT_D: | |
4115 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4116 | break; | |
4117 | default: | |
2a592bec | 4118 | return -EINVAL; |
232a6ee9 TP |
4119 | } |
4120 | } else { | |
4121 | switch (intel_dig_port->port) { | |
4122 | case PORT_B: | |
4123 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4124 | break; | |
4125 | case PORT_C: | |
4126 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4127 | break; | |
4128 | case PORT_D: | |
4129 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4130 | break; | |
4131 | default: | |
2a592bec | 4132 | return -EINVAL; |
232a6ee9 | 4133 | } |
a4fc5ed6 KP |
4134 | } |
4135 | ||
10f76a38 | 4136 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4137 | return 0; |
4138 | return 1; | |
4139 | } | |
4140 | ||
4141 | static enum drm_connector_status | |
4142 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4143 | { | |
4144 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4145 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4146 | int ret; | |
4147 | ||
4148 | /* Can't disconnect eDP, but you can close the lid... */ | |
4149 | if (is_edp(intel_dp)) { | |
4150 | enum drm_connector_status status; | |
4151 | ||
4152 | status = intel_panel_detect(dev); | |
4153 | if (status == connector_status_unknown) | |
4154 | status = connector_status_connected; | |
4155 | return status; | |
4156 | } | |
4157 | ||
4158 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4159 | if (ret == -EINVAL) | |
4160 | return connector_status_unknown; | |
4161 | else if (ret == 0) | |
a4fc5ed6 KP |
4162 | return connector_status_disconnected; |
4163 | ||
26d61aad | 4164 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4165 | } |
4166 | ||
8c241fef | 4167 | static struct edid * |
beb60608 | 4168 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4169 | { |
beb60608 | 4170 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4171 | |
9cd300e0 JN |
4172 | /* use cached edid if we have one */ |
4173 | if (intel_connector->edid) { | |
9cd300e0 JN |
4174 | /* invalid edid */ |
4175 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4176 | return NULL; |
4177 | ||
55e9edeb | 4178 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4179 | } else |
4180 | return drm_get_edid(&intel_connector->base, | |
4181 | &intel_dp->aux.ddc); | |
4182 | } | |
8c241fef | 4183 | |
beb60608 CW |
4184 | static void |
4185 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4186 | { | |
4187 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4188 | struct edid *edid; | |
8c241fef | 4189 | |
beb60608 CW |
4190 | edid = intel_dp_get_edid(intel_dp); |
4191 | intel_connector->detect_edid = edid; | |
4192 | ||
4193 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4194 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4195 | else | |
4196 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4197 | } |
4198 | ||
beb60608 CW |
4199 | static void |
4200 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4201 | { |
beb60608 | 4202 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4203 | |
beb60608 CW |
4204 | kfree(intel_connector->detect_edid); |
4205 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4206 | |
beb60608 CW |
4207 | intel_dp->has_audio = false; |
4208 | } | |
d6f24d0f | 4209 | |
beb60608 CW |
4210 | static enum intel_display_power_domain |
4211 | intel_dp_power_get(struct intel_dp *dp) | |
4212 | { | |
4213 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4214 | enum intel_display_power_domain power_domain; | |
4215 | ||
4216 | power_domain = intel_display_port_power_domain(encoder); | |
4217 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4218 | ||
4219 | return power_domain; | |
4220 | } | |
d6f24d0f | 4221 | |
beb60608 CW |
4222 | static void |
4223 | intel_dp_power_put(struct intel_dp *dp, | |
4224 | enum intel_display_power_domain power_domain) | |
4225 | { | |
4226 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4227 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4228 | } |
4229 | ||
a9756bb5 ZW |
4230 | static enum drm_connector_status |
4231 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4232 | { | |
4233 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4234 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4235 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4236 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4237 | enum drm_connector_status status; |
671dedd2 | 4238 | enum intel_display_power_domain power_domain; |
0e32b39c | 4239 | bool ret; |
a9756bb5 | 4240 | |
164c8598 | 4241 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4242 | connector->base.id, connector->name); |
beb60608 | 4243 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4244 | |
0e32b39c DA |
4245 | if (intel_dp->is_mst) { |
4246 | /* MST devices are disconnected from a monitor POV */ | |
4247 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4248 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4249 | return connector_status_disconnected; |
0e32b39c DA |
4250 | } |
4251 | ||
beb60608 | 4252 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4253 | |
d410b56d CW |
4254 | /* Can't disconnect eDP, but you can close the lid... */ |
4255 | if (is_edp(intel_dp)) | |
4256 | status = edp_detect(intel_dp); | |
4257 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4258 | status = ironlake_dp_detect(intel_dp); |
4259 | else | |
4260 | status = g4x_dp_detect(intel_dp); | |
4261 | if (status != connector_status_connected) | |
c8c8fb33 | 4262 | goto out; |
a9756bb5 | 4263 | |
0d198328 AJ |
4264 | intel_dp_probe_oui(intel_dp); |
4265 | ||
0e32b39c DA |
4266 | ret = intel_dp_probe_mst(intel_dp); |
4267 | if (ret) { | |
4268 | /* if we are in MST mode then this connector | |
4269 | won't appear connected or have anything with EDID on it */ | |
4270 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4271 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4272 | status = connector_status_disconnected; | |
4273 | goto out; | |
4274 | } | |
4275 | ||
beb60608 | 4276 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4277 | |
d63885da PZ |
4278 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4279 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4280 | status = connector_status_connected; |
4281 | ||
4282 | out: | |
beb60608 | 4283 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4284 | return status; |
a4fc5ed6 KP |
4285 | } |
4286 | ||
beb60608 CW |
4287 | static void |
4288 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4289 | { |
df0e9248 | 4290 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4291 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4292 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4293 | |
beb60608 CW |
4294 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4295 | connector->base.id, connector->name); | |
4296 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4297 | |
beb60608 CW |
4298 | if (connector->status != connector_status_connected) |
4299 | return; | |
671dedd2 | 4300 | |
beb60608 CW |
4301 | power_domain = intel_dp_power_get(intel_dp); |
4302 | ||
4303 | intel_dp_set_edid(intel_dp); | |
4304 | ||
4305 | intel_dp_power_put(intel_dp, power_domain); | |
4306 | ||
4307 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4308 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4309 | } | |
4310 | ||
4311 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4312 | { | |
4313 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4314 | struct edid *edid; | |
4315 | ||
4316 | edid = intel_connector->detect_edid; | |
4317 | if (edid) { | |
4318 | int ret = intel_connector_update_modes(connector, edid); | |
4319 | if (ret) | |
4320 | return ret; | |
4321 | } | |
32f9d658 | 4322 | |
f8779fda | 4323 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4324 | if (is_edp(intel_attached_dp(connector)) && |
4325 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4326 | struct drm_display_mode *mode; |
beb60608 CW |
4327 | |
4328 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4329 | intel_connector->panel.fixed_mode); |
f8779fda | 4330 | if (mode) { |
32f9d658 ZW |
4331 | drm_mode_probed_add(connector, mode); |
4332 | return 1; | |
4333 | } | |
4334 | } | |
beb60608 | 4335 | |
32f9d658 | 4336 | return 0; |
a4fc5ed6 KP |
4337 | } |
4338 | ||
1aad7ac0 CW |
4339 | static bool |
4340 | intel_dp_detect_audio(struct drm_connector *connector) | |
4341 | { | |
1aad7ac0 | 4342 | bool has_audio = false; |
beb60608 | 4343 | struct edid *edid; |
1aad7ac0 | 4344 | |
beb60608 CW |
4345 | edid = to_intel_connector(connector)->detect_edid; |
4346 | if (edid) | |
1aad7ac0 | 4347 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4348 | |
1aad7ac0 CW |
4349 | return has_audio; |
4350 | } | |
4351 | ||
f684960e CW |
4352 | static int |
4353 | intel_dp_set_property(struct drm_connector *connector, | |
4354 | struct drm_property *property, | |
4355 | uint64_t val) | |
4356 | { | |
e953fd7b | 4357 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4358 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4359 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4360 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4361 | int ret; |
4362 | ||
662595df | 4363 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4364 | if (ret) |
4365 | return ret; | |
4366 | ||
3f43c48d | 4367 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4368 | int i = val; |
4369 | bool has_audio; | |
4370 | ||
4371 | if (i == intel_dp->force_audio) | |
f684960e CW |
4372 | return 0; |
4373 | ||
1aad7ac0 | 4374 | intel_dp->force_audio = i; |
f684960e | 4375 | |
c3e5f67b | 4376 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4377 | has_audio = intel_dp_detect_audio(connector); |
4378 | else | |
c3e5f67b | 4379 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4380 | |
4381 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4382 | return 0; |
4383 | ||
1aad7ac0 | 4384 | intel_dp->has_audio = has_audio; |
f684960e CW |
4385 | goto done; |
4386 | } | |
4387 | ||
e953fd7b | 4388 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4389 | bool old_auto = intel_dp->color_range_auto; |
4390 | uint32_t old_range = intel_dp->color_range; | |
4391 | ||
55bc60db VS |
4392 | switch (val) { |
4393 | case INTEL_BROADCAST_RGB_AUTO: | |
4394 | intel_dp->color_range_auto = true; | |
4395 | break; | |
4396 | case INTEL_BROADCAST_RGB_FULL: | |
4397 | intel_dp->color_range_auto = false; | |
4398 | intel_dp->color_range = 0; | |
4399 | break; | |
4400 | case INTEL_BROADCAST_RGB_LIMITED: | |
4401 | intel_dp->color_range_auto = false; | |
4402 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4403 | break; | |
4404 | default: | |
4405 | return -EINVAL; | |
4406 | } | |
ae4edb80 DV |
4407 | |
4408 | if (old_auto == intel_dp->color_range_auto && | |
4409 | old_range == intel_dp->color_range) | |
4410 | return 0; | |
4411 | ||
e953fd7b CW |
4412 | goto done; |
4413 | } | |
4414 | ||
53b41837 YN |
4415 | if (is_edp(intel_dp) && |
4416 | property == connector->dev->mode_config.scaling_mode_property) { | |
4417 | if (val == DRM_MODE_SCALE_NONE) { | |
4418 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4419 | return -EINVAL; | |
4420 | } | |
4421 | ||
4422 | if (intel_connector->panel.fitting_mode == val) { | |
4423 | /* the eDP scaling property is not changed */ | |
4424 | return 0; | |
4425 | } | |
4426 | intel_connector->panel.fitting_mode = val; | |
4427 | ||
4428 | goto done; | |
4429 | } | |
4430 | ||
f684960e CW |
4431 | return -EINVAL; |
4432 | ||
4433 | done: | |
c0c36b94 CW |
4434 | if (intel_encoder->base.crtc) |
4435 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4436 | |
4437 | return 0; | |
4438 | } | |
4439 | ||
a4fc5ed6 | 4440 | static void |
73845adf | 4441 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4442 | { |
1d508706 | 4443 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4444 | |
10e972d3 | 4445 | kfree(intel_connector->detect_edid); |
beb60608 | 4446 | |
9cd300e0 JN |
4447 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4448 | kfree(intel_connector->edid); | |
4449 | ||
acd8db10 PZ |
4450 | /* Can't call is_edp() since the encoder may have been destroyed |
4451 | * already. */ | |
4452 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4453 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4454 | |
a4fc5ed6 | 4455 | drm_connector_cleanup(connector); |
55f78c43 | 4456 | kfree(connector); |
a4fc5ed6 KP |
4457 | } |
4458 | ||
00c09d70 | 4459 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4460 | { |
da63a9f2 PZ |
4461 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4462 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4463 | |
4f71d0cb | 4464 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4465 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4466 | if (is_edp(intel_dp)) { |
4467 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4468 | /* |
4469 | * vdd might still be enabled do to the delayed vdd off. | |
4470 | * Make sure vdd is actually turned off here. | |
4471 | */ | |
773538e8 | 4472 | pps_lock(intel_dp); |
4be73780 | 4473 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4474 | pps_unlock(intel_dp); |
4475 | ||
01527b31 CT |
4476 | if (intel_dp->edp_notifier.notifier_call) { |
4477 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4478 | intel_dp->edp_notifier.notifier_call = NULL; | |
4479 | } | |
bd943159 | 4480 | } |
c8bd0e49 | 4481 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4482 | kfree(intel_dig_port); |
24d05927 DV |
4483 | } |
4484 | ||
07f9cd0b ID |
4485 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4486 | { | |
4487 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4488 | ||
4489 | if (!is_edp(intel_dp)) | |
4490 | return; | |
4491 | ||
951468f3 VS |
4492 | /* |
4493 | * vdd might still be enabled do to the delayed vdd off. | |
4494 | * Make sure vdd is actually turned off here. | |
4495 | */ | |
afa4e53a | 4496 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4497 | pps_lock(intel_dp); |
07f9cd0b | 4498 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4499 | pps_unlock(intel_dp); |
07f9cd0b ID |
4500 | } |
4501 | ||
49e6bc51 VS |
4502 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4503 | { | |
4504 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4505 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4506 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4507 | enum intel_display_power_domain power_domain; | |
4508 | ||
4509 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4510 | ||
4511 | if (!edp_have_panel_vdd(intel_dp)) | |
4512 | return; | |
4513 | ||
4514 | /* | |
4515 | * The VDD bit needs a power domain reference, so if the bit is | |
4516 | * already enabled when we boot or resume, grab this reference and | |
4517 | * schedule a vdd off, so we don't hold on to the reference | |
4518 | * indefinitely. | |
4519 | */ | |
4520 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4521 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
4522 | intel_display_power_get(dev_priv, power_domain); | |
4523 | ||
4524 | edp_panel_vdd_schedule_off(intel_dp); | |
4525 | } | |
4526 | ||
6d93c0c4 ID |
4527 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4528 | { | |
49e6bc51 VS |
4529 | struct intel_dp *intel_dp; |
4530 | ||
4531 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
4532 | return; | |
4533 | ||
4534 | intel_dp = enc_to_intel_dp(encoder); | |
4535 | ||
4536 | pps_lock(intel_dp); | |
4537 | ||
4538 | /* | |
4539 | * Read out the current power sequencer assignment, | |
4540 | * in case the BIOS did something with it. | |
4541 | */ | |
4542 | if (IS_VALLEYVIEW(encoder->dev)) | |
4543 | vlv_initial_power_sequencer_setup(intel_dp); | |
4544 | ||
4545 | intel_edp_panel_vdd_sanitize(intel_dp); | |
4546 | ||
4547 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4548 | } |
4549 | ||
a4fc5ed6 | 4550 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4551 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4552 | .detect = intel_dp_detect, |
beb60608 | 4553 | .force = intel_dp_force, |
a4fc5ed6 | 4554 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4555 | .set_property = intel_dp_set_property, |
2545e4a6 | 4556 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 4557 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4558 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
a4fc5ed6 KP |
4559 | }; |
4560 | ||
4561 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4562 | .get_modes = intel_dp_get_modes, | |
4563 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4564 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4565 | }; |
4566 | ||
a4fc5ed6 | 4567 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4568 | .reset = intel_dp_encoder_reset, |
24d05927 | 4569 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4570 | }; |
4571 | ||
0e32b39c | 4572 | void |
21d40d37 | 4573 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4574 | { |
0e32b39c | 4575 | return; |
c8110e52 | 4576 | } |
6207937d | 4577 | |
b2c5c181 | 4578 | enum irqreturn |
13cf5504 DA |
4579 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4580 | { | |
4581 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4582 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4583 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4584 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 4585 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4586 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4587 | |
0e32b39c DA |
4588 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4589 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4590 | |
7a7f84cc VS |
4591 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4592 | /* | |
4593 | * vdd off can generate a long pulse on eDP which | |
4594 | * would require vdd on to handle it, and thus we | |
4595 | * would end up in an endless cycle of | |
4596 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4597 | */ | |
4598 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4599 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4600 | return IRQ_HANDLED; |
7a7f84cc VS |
4601 | } |
4602 | ||
26fbb774 VS |
4603 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4604 | port_name(intel_dig_port->port), | |
0e32b39c | 4605 | long_hpd ? "long" : "short"); |
13cf5504 | 4606 | |
1c767b33 ID |
4607 | power_domain = intel_display_port_power_domain(intel_encoder); |
4608 | intel_display_power_get(dev_priv, power_domain); | |
4609 | ||
0e32b39c | 4610 | if (long_hpd) { |
2a592bec DA |
4611 | |
4612 | if (HAS_PCH_SPLIT(dev)) { | |
4613 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4614 | goto mst_fail; | |
4615 | } else { | |
4616 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4617 | goto mst_fail; | |
4618 | } | |
0e32b39c DA |
4619 | |
4620 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4621 | goto mst_fail; | |
4622 | } | |
4623 | ||
4624 | intel_dp_probe_oui(intel_dp); | |
4625 | ||
4626 | if (!intel_dp_probe_mst(intel_dp)) | |
4627 | goto mst_fail; | |
4628 | ||
4629 | } else { | |
4630 | if (intel_dp->is_mst) { | |
1c767b33 | 4631 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4632 | goto mst_fail; |
4633 | } | |
4634 | ||
4635 | if (!intel_dp->is_mst) { | |
4636 | /* | |
4637 | * we'll check the link status via the normal hot plug path later - | |
4638 | * but for short hpds we should check it now | |
4639 | */ | |
5b215bcf | 4640 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4641 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4642 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4643 | } |
4644 | } | |
b2c5c181 DV |
4645 | |
4646 | ret = IRQ_HANDLED; | |
4647 | ||
1c767b33 | 4648 | goto put_power; |
0e32b39c DA |
4649 | mst_fail: |
4650 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4651 | if (intel_dp->is_mst) { | |
4652 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4653 | intel_dp->is_mst = false; | |
4654 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4655 | } | |
1c767b33 ID |
4656 | put_power: |
4657 | intel_display_power_put(dev_priv, power_domain); | |
4658 | ||
4659 | return ret; | |
13cf5504 DA |
4660 | } |
4661 | ||
e3421a18 ZW |
4662 | /* Return which DP Port should be selected for Transcoder DP control */ |
4663 | int | |
0206e353 | 4664 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4665 | { |
4666 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4667 | struct intel_encoder *intel_encoder; |
4668 | struct intel_dp *intel_dp; | |
e3421a18 | 4669 | |
fa90ecef PZ |
4670 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4671 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4672 | |
fa90ecef PZ |
4673 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4674 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4675 | return intel_dp->output_reg; |
e3421a18 | 4676 | } |
ea5b213a | 4677 | |
e3421a18 ZW |
4678 | return -1; |
4679 | } | |
4680 | ||
36e83a18 | 4681 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4682 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4683 | { |
4684 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4685 | union child_device_config *p_child; |
36e83a18 | 4686 | int i; |
5d8a7752 VS |
4687 | static const short port_mapping[] = { |
4688 | [PORT_B] = PORT_IDPB, | |
4689 | [PORT_C] = PORT_IDPC, | |
4690 | [PORT_D] = PORT_IDPD, | |
4691 | }; | |
36e83a18 | 4692 | |
3b32a35b VS |
4693 | if (port == PORT_A) |
4694 | return true; | |
4695 | ||
41aa3448 | 4696 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4697 | return false; |
4698 | ||
41aa3448 RV |
4699 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4700 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4701 | |
5d8a7752 | 4702 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4703 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4704 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4705 | return true; |
4706 | } | |
4707 | return false; | |
4708 | } | |
4709 | ||
0e32b39c | 4710 | void |
f684960e CW |
4711 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4712 | { | |
53b41837 YN |
4713 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4714 | ||
3f43c48d | 4715 | intel_attach_force_audio_property(connector); |
e953fd7b | 4716 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4717 | intel_dp->color_range_auto = true; |
53b41837 YN |
4718 | |
4719 | if (is_edp(intel_dp)) { | |
4720 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4721 | drm_object_attach_property( |
4722 | &connector->base, | |
53b41837 | 4723 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4724 | DRM_MODE_SCALE_ASPECT); |
4725 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4726 | } |
f684960e CW |
4727 | } |
4728 | ||
dada1a9f ID |
4729 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4730 | { | |
4731 | intel_dp->last_power_cycle = jiffies; | |
4732 | intel_dp->last_power_on = jiffies; | |
4733 | intel_dp->last_backlight_off = jiffies; | |
4734 | } | |
4735 | ||
67a54566 DV |
4736 | static void |
4737 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 4738 | struct intel_dp *intel_dp) |
67a54566 DV |
4739 | { |
4740 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
4741 | struct edp_power_seq cur, vbt, spec, |
4742 | *final = &intel_dp->pps_delays; | |
67a54566 | 4743 | u32 pp_on, pp_off, pp_div, pp; |
bf13e81b | 4744 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4745 | |
e39b999a VS |
4746 | lockdep_assert_held(&dev_priv->pps_mutex); |
4747 | ||
81ddbc69 VS |
4748 | /* already initialized? */ |
4749 | if (final->t11_t12 != 0) | |
4750 | return; | |
4751 | ||
453c5420 | 4752 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4753 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4754 | pp_on_reg = PCH_PP_ON_DELAYS; |
4755 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4756 | pp_div_reg = PCH_PP_DIVISOR; | |
4757 | } else { | |
bf13e81b JN |
4758 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4759 | ||
4760 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4761 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4762 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4763 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4764 | } |
67a54566 DV |
4765 | |
4766 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4767 | * the very first thing. */ | |
453c5420 | 4768 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4769 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4770 | |
453c5420 JB |
4771 | pp_on = I915_READ(pp_on_reg); |
4772 | pp_off = I915_READ(pp_off_reg); | |
4773 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4774 | |
4775 | /* Pull timing values out of registers */ | |
4776 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4777 | PANEL_POWER_UP_DELAY_SHIFT; | |
4778 | ||
4779 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4780 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4781 | ||
4782 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4783 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4784 | ||
4785 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4786 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4787 | ||
4788 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4789 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4790 | ||
4791 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4792 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4793 | ||
41aa3448 | 4794 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4795 | |
4796 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4797 | * our hw here, which are all in 100usec. */ | |
4798 | spec.t1_t3 = 210 * 10; | |
4799 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4800 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4801 | spec.t10 = 500 * 10; | |
4802 | /* This one is special and actually in units of 100ms, but zero | |
4803 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4804 | * table multiplies it with 1000 to make it in units of 100usec, | |
4805 | * too. */ | |
4806 | spec.t11_t12 = (510 + 100) * 10; | |
4807 | ||
4808 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4809 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4810 | ||
4811 | /* Use the max of the register settings and vbt. If both are | |
4812 | * unset, fall back to the spec limits. */ | |
36b5f425 | 4813 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
4814 | spec.field : \ |
4815 | max(cur.field, vbt.field)) | |
4816 | assign_final(t1_t3); | |
4817 | assign_final(t8); | |
4818 | assign_final(t9); | |
4819 | assign_final(t10); | |
4820 | assign_final(t11_t12); | |
4821 | #undef assign_final | |
4822 | ||
36b5f425 | 4823 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
4824 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
4825 | intel_dp->backlight_on_delay = get_delay(t8); | |
4826 | intel_dp->backlight_off_delay = get_delay(t9); | |
4827 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4828 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4829 | #undef get_delay | |
4830 | ||
f30d26e4 JN |
4831 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4832 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4833 | intel_dp->panel_power_cycle_delay); | |
4834 | ||
4835 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4836 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
4837 | } |
4838 | ||
4839 | static void | |
4840 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 4841 | struct intel_dp *intel_dp) |
f30d26e4 JN |
4842 | { |
4843 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4844 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4845 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4846 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 4847 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 4848 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 4849 | |
e39b999a | 4850 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
4851 | |
4852 | if (HAS_PCH_SPLIT(dev)) { | |
4853 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4854 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4855 | pp_div_reg = PCH_PP_DIVISOR; | |
4856 | } else { | |
bf13e81b JN |
4857 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4858 | ||
4859 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4860 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4861 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4862 | } |
4863 | ||
b2f19d1a PZ |
4864 | /* |
4865 | * And finally store the new values in the power sequencer. The | |
4866 | * backlight delays are set to 1 because we do manual waits on them. For | |
4867 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4868 | * we'll end up waiting for the backlight off delay twice: once when we | |
4869 | * do the manual sleep, and once when we disable the panel and wait for | |
4870 | * the PP_STATUS bit to become zero. | |
4871 | */ | |
f30d26e4 | 4872 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4873 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4874 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4875 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4876 | /* Compute the divisor for the pp clock, simply match the Bspec |
4877 | * formula. */ | |
453c5420 | 4878 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4879 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4880 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4881 | ||
4882 | /* Haswell doesn't have any port selection bits for the panel | |
4883 | * power sequencer any more. */ | |
bc7d38a4 | 4884 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 4885 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 4886 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 4887 | if (port == PORT_A) |
a24c144c | 4888 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4889 | else |
a24c144c | 4890 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4891 | } |
4892 | ||
453c5420 JB |
4893 | pp_on |= port_sel; |
4894 | ||
4895 | I915_WRITE(pp_on_reg, pp_on); | |
4896 | I915_WRITE(pp_off_reg, pp_off); | |
4897 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4898 | |
67a54566 | 4899 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4900 | I915_READ(pp_on_reg), |
4901 | I915_READ(pp_off_reg), | |
4902 | I915_READ(pp_div_reg)); | |
f684960e CW |
4903 | } |
4904 | ||
b33a2815 VK |
4905 | /** |
4906 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
4907 | * @dev: DRM device | |
4908 | * @refresh_rate: RR to be programmed | |
4909 | * | |
4910 | * This function gets called when refresh rate (RR) has to be changed from | |
4911 | * one frequency to another. Switches can be between high and low RR | |
4912 | * supported by the panel or to any other RR based on media playback (in | |
4913 | * this case, RR value needs to be passed from user space). | |
4914 | * | |
4915 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
4916 | */ | |
96178eeb | 4917 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
4918 | { |
4919 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4920 | struct intel_encoder *encoder; | |
96178eeb VK |
4921 | struct intel_digital_port *dig_port = NULL; |
4922 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 4923 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 4924 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 4925 | u32 reg, val; |
96178eeb | 4926 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
4927 | |
4928 | if (refresh_rate <= 0) { | |
4929 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4930 | return; | |
4931 | } | |
4932 | ||
96178eeb VK |
4933 | if (intel_dp == NULL) { |
4934 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
4935 | return; |
4936 | } | |
4937 | ||
1fcc9d1c | 4938 | /* |
e4d59f6b RV |
4939 | * FIXME: This needs proper synchronization with psr state for some |
4940 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 4941 | */ |
439d7ac0 | 4942 | |
96178eeb VK |
4943 | dig_port = dp_to_dig_port(intel_dp); |
4944 | encoder = &dig_port->base; | |
439d7ac0 PB |
4945 | intel_crtc = encoder->new_crtc; |
4946 | ||
4947 | if (!intel_crtc) { | |
4948 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4949 | return; | |
4950 | } | |
4951 | ||
6e3c9717 | 4952 | config = intel_crtc->config; |
439d7ac0 | 4953 | |
96178eeb | 4954 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
4955 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
4956 | return; | |
4957 | } | |
4958 | ||
96178eeb VK |
4959 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
4960 | refresh_rate) | |
439d7ac0 PB |
4961 | index = DRRS_LOW_RR; |
4962 | ||
96178eeb | 4963 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
4964 | DRM_DEBUG_KMS( |
4965 | "DRRS requested for previously set RR...ignoring\n"); | |
4966 | return; | |
4967 | } | |
4968 | ||
4969 | if (!intel_crtc->active) { | |
4970 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4971 | return; | |
4972 | } | |
4973 | ||
44395bfe | 4974 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
4975 | switch (index) { |
4976 | case DRRS_HIGH_RR: | |
4977 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
4978 | break; | |
4979 | case DRRS_LOW_RR: | |
4980 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
4981 | break; | |
4982 | case DRRS_MAX_RR: | |
4983 | default: | |
4984 | DRM_ERROR("Unsupported refreshrate type\n"); | |
4985 | } | |
4986 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 4987 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 4988 | val = I915_READ(reg); |
a4c30b1d | 4989 | |
439d7ac0 | 4990 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
4991 | if (IS_VALLEYVIEW(dev)) |
4992 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
4993 | else | |
4994 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 4995 | } else { |
6fa7aec1 VK |
4996 | if (IS_VALLEYVIEW(dev)) |
4997 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
4998 | else | |
4999 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5000 | } |
5001 | I915_WRITE(reg, val); | |
5002 | } | |
5003 | ||
4e9ac947 VK |
5004 | dev_priv->drrs.refresh_rate_type = index; |
5005 | ||
5006 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5007 | } | |
5008 | ||
b33a2815 VK |
5009 | /** |
5010 | * intel_edp_drrs_enable - init drrs struct if supported | |
5011 | * @intel_dp: DP struct | |
5012 | * | |
5013 | * Initializes frontbuffer_bits and drrs.dp | |
5014 | */ | |
c395578e VK |
5015 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5016 | { | |
5017 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5018 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5019 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5020 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5021 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5022 | ||
5023 | if (!intel_crtc->config->has_drrs) { | |
5024 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5025 | return; | |
5026 | } | |
5027 | ||
5028 | mutex_lock(&dev_priv->drrs.mutex); | |
5029 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5030 | DRM_ERROR("DRRS already enabled\n"); | |
5031 | goto unlock; | |
5032 | } | |
5033 | ||
5034 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5035 | ||
5036 | dev_priv->drrs.dp = intel_dp; | |
5037 | ||
5038 | unlock: | |
5039 | mutex_unlock(&dev_priv->drrs.mutex); | |
5040 | } | |
5041 | ||
b33a2815 VK |
5042 | /** |
5043 | * intel_edp_drrs_disable - Disable DRRS | |
5044 | * @intel_dp: DP struct | |
5045 | * | |
5046 | */ | |
c395578e VK |
5047 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5048 | { | |
5049 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5050 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5051 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5052 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5053 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5054 | ||
5055 | if (!intel_crtc->config->has_drrs) | |
5056 | return; | |
5057 | ||
5058 | mutex_lock(&dev_priv->drrs.mutex); | |
5059 | if (!dev_priv->drrs.dp) { | |
5060 | mutex_unlock(&dev_priv->drrs.mutex); | |
5061 | return; | |
5062 | } | |
5063 | ||
5064 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5065 | intel_dp_set_drrs_state(dev_priv->dev, | |
5066 | intel_dp->attached_connector->panel. | |
5067 | fixed_mode->vrefresh); | |
5068 | ||
5069 | dev_priv->drrs.dp = NULL; | |
5070 | mutex_unlock(&dev_priv->drrs.mutex); | |
5071 | ||
5072 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5073 | } | |
5074 | ||
4e9ac947 VK |
5075 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5076 | { | |
5077 | struct drm_i915_private *dev_priv = | |
5078 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5079 | struct intel_dp *intel_dp; | |
5080 | ||
5081 | mutex_lock(&dev_priv->drrs.mutex); | |
5082 | ||
5083 | intel_dp = dev_priv->drrs.dp; | |
5084 | ||
5085 | if (!intel_dp) | |
5086 | goto unlock; | |
5087 | ||
439d7ac0 | 5088 | /* |
4e9ac947 VK |
5089 | * The delayed work can race with an invalidate hence we need to |
5090 | * recheck. | |
439d7ac0 PB |
5091 | */ |
5092 | ||
4e9ac947 VK |
5093 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5094 | goto unlock; | |
439d7ac0 | 5095 | |
4e9ac947 VK |
5096 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5097 | intel_dp_set_drrs_state(dev_priv->dev, | |
5098 | intel_dp->attached_connector->panel. | |
5099 | downclock_mode->vrefresh); | |
439d7ac0 | 5100 | |
4e9ac947 | 5101 | unlock: |
439d7ac0 | 5102 | |
4e9ac947 | 5103 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5104 | } |
5105 | ||
b33a2815 VK |
5106 | /** |
5107 | * intel_edp_drrs_invalidate - Invalidate DRRS | |
5108 | * @dev: DRM device | |
5109 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5110 | * | |
5111 | * When there is a disturbance on screen (due to cursor movement/time | |
5112 | * update etc), DRRS needs to be invalidated, i.e. need to switch to | |
5113 | * high RR. | |
5114 | * | |
5115 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5116 | */ | |
a93fad0f VK |
5117 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5118 | unsigned frontbuffer_bits) | |
5119 | { | |
5120 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5121 | struct drm_crtc *crtc; | |
5122 | enum pipe pipe; | |
5123 | ||
5124 | if (!dev_priv->drrs.dp) | |
5125 | return; | |
5126 | ||
3954e733 R |
5127 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5128 | ||
a93fad0f VK |
5129 | mutex_lock(&dev_priv->drrs.mutex); |
5130 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5131 | pipe = to_intel_crtc(crtc)->pipe; | |
5132 | ||
5133 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) { | |
a93fad0f VK |
5134 | intel_dp_set_drrs_state(dev_priv->dev, |
5135 | dev_priv->drrs.dp->attached_connector->panel. | |
5136 | fixed_mode->vrefresh); | |
5137 | } | |
5138 | ||
5139 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
5140 | ||
5141 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5142 | mutex_unlock(&dev_priv->drrs.mutex); | |
5143 | } | |
5144 | ||
b33a2815 VK |
5145 | /** |
5146 | * intel_edp_drrs_flush - Flush DRRS | |
5147 | * @dev: DRM device | |
5148 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5149 | * | |
5150 | * When there is no movement on screen, DRRS work can be scheduled. | |
5151 | * This DRRS work is responsible for setting relevant registers after a | |
5152 | * timeout of 1 second. | |
5153 | * | |
5154 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5155 | */ | |
a93fad0f VK |
5156 | void intel_edp_drrs_flush(struct drm_device *dev, |
5157 | unsigned frontbuffer_bits) | |
5158 | { | |
5159 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5160 | struct drm_crtc *crtc; | |
5161 | enum pipe pipe; | |
5162 | ||
5163 | if (!dev_priv->drrs.dp) | |
5164 | return; | |
5165 | ||
3954e733 R |
5166 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5167 | ||
a93fad0f VK |
5168 | mutex_lock(&dev_priv->drrs.mutex); |
5169 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5170 | pipe = to_intel_crtc(crtc)->pipe; | |
5171 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
5172 | ||
a93fad0f VK |
5173 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR && |
5174 | !dev_priv->drrs.busy_frontbuffer_bits) | |
5175 | schedule_delayed_work(&dev_priv->drrs.work, | |
5176 | msecs_to_jiffies(1000)); | |
5177 | mutex_unlock(&dev_priv->drrs.mutex); | |
5178 | } | |
5179 | ||
b33a2815 VK |
5180 | /** |
5181 | * DOC: Display Refresh Rate Switching (DRRS) | |
5182 | * | |
5183 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5184 | * which enables swtching between low and high refresh rates, | |
5185 | * dynamically, based on the usage scenario. This feature is applicable | |
5186 | * for internal panels. | |
5187 | * | |
5188 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5189 | * would list multiple refresh rates for one resolution. | |
5190 | * | |
5191 | * DRRS is of 2 types - static and seamless. | |
5192 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5193 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5194 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5195 | * and can be used during normal system usage. This is done by programming | |
5196 | * certain registers. | |
5197 | * | |
5198 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5199 | * inputs from the panel spec. | |
5200 | * | |
5201 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5202 | * | |
5203 | * eDP DRRS:- | |
5204 | * The implementation is based on frontbuffer tracking implementation. | |
5205 | * When there is a disturbance on the screen triggered by user activity or a | |
5206 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5207 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5208 | * to low RR is made. | |
5209 | * For integration with frontbuffer tracking code, | |
5210 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5211 | * | |
5212 | * DRRS can be further extended to support other internal panels and also | |
5213 | * the scenario of video playback wherein RR is set based on the rate | |
5214 | * requested by userspace. | |
5215 | */ | |
5216 | ||
5217 | /** | |
5218 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5219 | * @intel_connector: eDP connector | |
5220 | * @fixed_mode: preferred mode of panel | |
5221 | * | |
5222 | * This function is called only once at driver load to initialize basic | |
5223 | * DRRS stuff. | |
5224 | * | |
5225 | * Returns: | |
5226 | * Downclock mode if panel supports it, else return NULL. | |
5227 | * DRRS support is determined by the presence of downclock mode (apart | |
5228 | * from VBT setting). | |
5229 | */ | |
4f9db5b5 | 5230 | static struct drm_display_mode * |
96178eeb VK |
5231 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5232 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5233 | { |
5234 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5235 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5236 | struct drm_i915_private *dev_priv = dev->dev_private; |
5237 | struct drm_display_mode *downclock_mode = NULL; | |
5238 | ||
5239 | if (INTEL_INFO(dev)->gen <= 6) { | |
5240 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5241 | return NULL; | |
5242 | } | |
5243 | ||
5244 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5245 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5246 | return NULL; |
5247 | } | |
5248 | ||
5249 | downclock_mode = intel_find_panel_downclock | |
5250 | (dev, fixed_mode, connector); | |
5251 | ||
5252 | if (!downclock_mode) { | |
a1d26342 | 5253 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5254 | return NULL; |
5255 | } | |
5256 | ||
4e9ac947 VK |
5257 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5258 | ||
96178eeb | 5259 | mutex_init(&dev_priv->drrs.mutex); |
439d7ac0 | 5260 | |
96178eeb | 5261 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5262 | |
96178eeb | 5263 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5264 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5265 | return downclock_mode; |
5266 | } | |
5267 | ||
ed92f0b2 | 5268 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5269 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5270 | { |
5271 | struct drm_connector *connector = &intel_connector->base; | |
5272 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5273 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5274 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5275 | struct drm_i915_private *dev_priv = dev->dev_private; |
5276 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5277 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5278 | bool has_dpcd; |
5279 | struct drm_display_mode *scan; | |
5280 | struct edid *edid; | |
6517d273 | 5281 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 | 5282 | |
96178eeb | 5283 | dev_priv->drrs.type = DRRS_NOT_SUPPORTED; |
4f9db5b5 | 5284 | |
ed92f0b2 PZ |
5285 | if (!is_edp(intel_dp)) |
5286 | return true; | |
5287 | ||
49e6bc51 VS |
5288 | pps_lock(intel_dp); |
5289 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5290 | pps_unlock(intel_dp); | |
63635217 | 5291 | |
ed92f0b2 | 5292 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5293 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5294 | |
5295 | if (has_dpcd) { | |
5296 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5297 | dev_priv->no_aux_handshake = | |
5298 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5299 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5300 | } else { | |
5301 | /* if this fails, presume the device is a ghost */ | |
5302 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5303 | return false; |
5304 | } | |
5305 | ||
5306 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5307 | pps_lock(intel_dp); |
36b5f425 | 5308 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5309 | pps_unlock(intel_dp); |
ed92f0b2 | 5310 | |
060c8778 | 5311 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5312 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5313 | if (edid) { |
5314 | if (drm_add_edid_modes(connector, edid)) { | |
5315 | drm_mode_connector_update_edid_property(connector, | |
5316 | edid); | |
5317 | drm_edid_to_eld(connector, edid); | |
5318 | } else { | |
5319 | kfree(edid); | |
5320 | edid = ERR_PTR(-EINVAL); | |
5321 | } | |
5322 | } else { | |
5323 | edid = ERR_PTR(-ENOENT); | |
5324 | } | |
5325 | intel_connector->edid = edid; | |
5326 | ||
5327 | /* prefer fixed mode from EDID if available */ | |
5328 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5329 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5330 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5331 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5332 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5333 | break; |
5334 | } | |
5335 | } | |
5336 | ||
5337 | /* fallback to VBT if available for eDP */ | |
5338 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5339 | fixed_mode = drm_mode_duplicate(dev, | |
5340 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5341 | if (fixed_mode) | |
5342 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5343 | } | |
060c8778 | 5344 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5345 | |
01527b31 CT |
5346 | if (IS_VALLEYVIEW(dev)) { |
5347 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5348 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5349 | |
5350 | /* | |
5351 | * Figure out the current pipe for the initial backlight setup. | |
5352 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5353 | * fails just assume pipe A. | |
5354 | */ | |
5355 | if (IS_CHERRYVIEW(dev)) | |
5356 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5357 | else | |
5358 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5359 | ||
5360 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5361 | pipe = intel_dp->pps_pipe; | |
5362 | ||
5363 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5364 | pipe = PIPE_A; | |
5365 | ||
5366 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5367 | pipe_name(pipe)); | |
01527b31 CT |
5368 | } |
5369 | ||
4f9db5b5 | 5370 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5371 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
6517d273 | 5372 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5373 | |
5374 | return true; | |
5375 | } | |
5376 | ||
16c25533 | 5377 | bool |
f0fec3f2 PZ |
5378 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5379 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5380 | { |
f0fec3f2 PZ |
5381 | struct drm_connector *connector = &intel_connector->base; |
5382 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5383 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5384 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5385 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5386 | enum port port = intel_dig_port->port; |
0b99836f | 5387 | int type; |
a4fc5ed6 | 5388 | |
a4a5d2f8 VS |
5389 | intel_dp->pps_pipe = INVALID_PIPE; |
5390 | ||
ec5b01dd | 5391 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5392 | if (INTEL_INFO(dev)->gen >= 9) |
5393 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5394 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5395 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5396 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5397 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5398 | else if (HAS_PCH_SPLIT(dev)) | |
5399 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5400 | else | |
5401 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5402 | ||
b9ca5fad DL |
5403 | if (INTEL_INFO(dev)->gen >= 9) |
5404 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5405 | else | |
5406 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5407 | |
0767935e DV |
5408 | /* Preserve the current hw state. */ |
5409 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5410 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5411 | |
3b32a35b | 5412 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5413 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5414 | else |
5415 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5416 | |
f7d24902 ID |
5417 | /* |
5418 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5419 | * for DP the encoder type can be set by the caller to | |
5420 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5421 | */ | |
5422 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5423 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5424 | ||
c17ed5b5 VS |
5425 | /* eDP only on port B and/or C on vlv/chv */ |
5426 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5427 | port != PORT_B && port != PORT_C)) | |
5428 | return false; | |
5429 | ||
e7281eab ID |
5430 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5431 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5432 | port_name(port)); | |
5433 | ||
b329530c | 5434 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5435 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5436 | ||
a4fc5ed6 KP |
5437 | connector->interlace_allowed = true; |
5438 | connector->doublescan_allowed = 0; | |
5439 | ||
f0fec3f2 | 5440 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5441 | edp_panel_vdd_work); |
a4fc5ed6 | 5442 | |
df0e9248 | 5443 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5444 | drm_connector_register(connector); |
a4fc5ed6 | 5445 | |
affa9354 | 5446 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5447 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5448 | else | |
5449 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5450 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5451 | |
0b99836f | 5452 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5453 | switch (port) { |
5454 | case PORT_A: | |
1d843f9d | 5455 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5456 | break; |
5457 | case PORT_B: | |
1d843f9d | 5458 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5459 | break; |
5460 | case PORT_C: | |
1d843f9d | 5461 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5462 | break; |
5463 | case PORT_D: | |
1d843f9d | 5464 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5465 | break; |
5466 | default: | |
ad1c0b19 | 5467 | BUG(); |
5eb08b69 ZW |
5468 | } |
5469 | ||
dada1a9f | 5470 | if (is_edp(intel_dp)) { |
773538e8 | 5471 | pps_lock(intel_dp); |
1e74a324 VS |
5472 | intel_dp_init_panel_power_timestamps(intel_dp); |
5473 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 5474 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 5475 | else |
36b5f425 | 5476 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 5477 | pps_unlock(intel_dp); |
dada1a9f | 5478 | } |
0095e6dc | 5479 | |
9d1a1031 | 5480 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5481 | |
0e32b39c | 5482 | /* init MST on ports that can support it */ |
c86ea3d0 | 5483 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
0e32b39c | 5484 | if (port == PORT_B || port == PORT_C || port == PORT_D) { |
a4a5d2f8 VS |
5485 | intel_dp_mst_encoder_init(intel_dig_port, |
5486 | intel_connector->base.base.id); | |
0e32b39c DA |
5487 | } |
5488 | } | |
5489 | ||
36b5f425 | 5490 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 5491 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5492 | if (is_edp(intel_dp)) { |
5493 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5494 | /* |
5495 | * vdd might still be enabled do to the delayed vdd off. | |
5496 | * Make sure vdd is actually turned off here. | |
5497 | */ | |
773538e8 | 5498 | pps_lock(intel_dp); |
4be73780 | 5499 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5500 | pps_unlock(intel_dp); |
15b1d171 | 5501 | } |
34ea3d38 | 5502 | drm_connector_unregister(connector); |
b2f246a8 | 5503 | drm_connector_cleanup(connector); |
16c25533 | 5504 | return false; |
b2f246a8 | 5505 | } |
32f9d658 | 5506 | |
f684960e CW |
5507 | intel_dp_add_properties(intel_dp, connector); |
5508 | ||
a4fc5ed6 KP |
5509 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5510 | * 0xd. Failure to do so will result in spurious interrupts being | |
5511 | * generated on the port when a cable is not attached. | |
5512 | */ | |
5513 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5514 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5515 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5516 | } | |
16c25533 PZ |
5517 | |
5518 | return true; | |
a4fc5ed6 | 5519 | } |
f0fec3f2 PZ |
5520 | |
5521 | void | |
5522 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5523 | { | |
13cf5504 | 5524 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5525 | struct intel_digital_port *intel_dig_port; |
5526 | struct intel_encoder *intel_encoder; | |
5527 | struct drm_encoder *encoder; | |
5528 | struct intel_connector *intel_connector; | |
5529 | ||
b14c5679 | 5530 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5531 | if (!intel_dig_port) |
5532 | return; | |
5533 | ||
b14c5679 | 5534 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
5535 | if (!intel_connector) { |
5536 | kfree(intel_dig_port); | |
5537 | return; | |
5538 | } | |
5539 | ||
5540 | intel_encoder = &intel_dig_port->base; | |
5541 | encoder = &intel_encoder->base; | |
5542 | ||
5543 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5544 | DRM_MODE_ENCODER_TMDS); | |
5545 | ||
5bfe2ac0 | 5546 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5547 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5548 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5549 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5550 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5551 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5552 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5553 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5554 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5555 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5556 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5557 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5558 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5559 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5560 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5561 | } else { |
ecff4f3b JN |
5562 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5563 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5564 | if (INTEL_INFO(dev)->gen >= 5) |
5565 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5566 | } |
f0fec3f2 | 5567 | |
174edf1f | 5568 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5569 | intel_dig_port->dp.output_reg = output_reg; |
5570 | ||
00c09d70 | 5571 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5572 | if (IS_CHERRYVIEW(dev)) { |
5573 | if (port == PORT_D) | |
5574 | intel_encoder->crtc_mask = 1 << 2; | |
5575 | else | |
5576 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5577 | } else { | |
5578 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5579 | } | |
bc079e8b | 5580 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5581 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5582 | ||
13cf5504 DA |
5583 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5584 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5585 | ||
15b1d171 PZ |
5586 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5587 | drm_encoder_cleanup(encoder); | |
5588 | kfree(intel_dig_port); | |
b2f246a8 | 5589 | kfree(intel_connector); |
15b1d171 | 5590 | } |
f0fec3f2 | 5591 | } |
0e32b39c DA |
5592 | |
5593 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5594 | { | |
5595 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5596 | int i; | |
5597 | ||
5598 | /* disable MST */ | |
5599 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5600 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5601 | if (!intel_dig_port) | |
5602 | continue; | |
5603 | ||
5604 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5605 | if (!intel_dig_port->dp.can_mst) | |
5606 | continue; | |
5607 | if (intel_dig_port->dp.is_mst) | |
5608 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5609 | } | |
5610 | } | |
5611 | } | |
5612 | ||
5613 | void intel_dp_mst_resume(struct drm_device *dev) | |
5614 | { | |
5615 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5616 | int i; | |
5617 | ||
5618 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5619 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5620 | if (!intel_dig_port) | |
5621 | continue; | |
5622 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5623 | int ret; | |
5624 | ||
5625 | if (!intel_dig_port->dp.can_mst) | |
5626 | continue; | |
5627 | ||
5628 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5629 | if (ret != 0) { | |
5630 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5631 | } | |
5632 | } | |
5633 | } | |
5634 | } |