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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
01527b31 CT |
31 | #include <linux/notifier.h> |
32 | #include <linux/reboot.h> | |
760285e7 | 33 | #include <drm/drmP.h> |
c6f95f27 | 34 | #include <drm/drm_atomic_helper.h> |
760285e7 DH |
35 | #include <drm/drm_crtc.h> |
36 | #include <drm/drm_crtc_helper.h> | |
37 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 38 | #include "intel_drv.h" |
760285e7 | 39 | #include <drm/i915_drm.h> |
a4fc5ed6 | 40 | #include "i915_drv.h" |
a4fc5ed6 | 41 | |
a4fc5ed6 KP |
42 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
43 | ||
9dd4ffdf CML |
44 | struct dp_link_dpll { |
45 | int link_bw; | |
46 | struct dpll dpll; | |
47 | }; | |
48 | ||
49 | static const struct dp_link_dpll gen4_dpll[] = { | |
50 | { DP_LINK_BW_1_62, | |
51 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
52 | { DP_LINK_BW_2_7, | |
53 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
54 | }; | |
55 | ||
56 | static const struct dp_link_dpll pch_dpll[] = { | |
57 | { DP_LINK_BW_1_62, | |
58 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
59 | { DP_LINK_BW_2_7, | |
60 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
61 | }; | |
62 | ||
65ce4bf5 CML |
63 | static const struct dp_link_dpll vlv_dpll[] = { |
64 | { DP_LINK_BW_1_62, | |
58f6e632 | 65 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
66 | { DP_LINK_BW_2_7, |
67 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
68 | }; | |
69 | ||
ef9348c8 CML |
70 | /* |
71 | * CHV supports eDP 1.4 that have more link rates. | |
72 | * Below only provides the fixed rate but exclude variable rate. | |
73 | */ | |
74 | static const struct dp_link_dpll chv_dpll[] = { | |
75 | /* | |
76 | * CHV requires to program fractional division for m2. | |
77 | * m2 is stored in fixed point format using formula below | |
78 | * (m2_int << 22) | m2_fraction | |
79 | */ | |
80 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
81 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
82 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
83 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
84 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
85 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
86 | }; | |
a8f3ef61 | 87 | /* Skylake supports following rates */ |
f4896f15 VS |
88 | static const int gen9_rates[] = { 162000, 216000, 270000, |
89 | 324000, 432000, 540000 }; | |
90 | static const int default_rates[] = { 162000, 270000, 540000 }; | |
ef9348c8 | 91 | |
cfcb0fc9 JB |
92 | /** |
93 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
94 | * @intel_dp: DP struct | |
95 | * | |
96 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
97 | * will return true, and false otherwise. | |
98 | */ | |
99 | static bool is_edp(struct intel_dp *intel_dp) | |
100 | { | |
da63a9f2 PZ |
101 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
102 | ||
103 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
104 | } |
105 | ||
68b4d824 | 106 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 107 | { |
68b4d824 ID |
108 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
109 | ||
110 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
111 | } |
112 | ||
df0e9248 CW |
113 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
114 | { | |
fa90ecef | 115 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
116 | } |
117 | ||
ea5b213a | 118 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 119 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 120 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
093e3f13 | 121 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a8c3344e VS |
122 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
123 | enum pipe pipe); | |
a4fc5ed6 | 124 | |
0e32b39c | 125 | int |
ea5b213a | 126 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 127 | { |
7183dc29 | 128 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
06ea66b6 | 129 | struct drm_device *dev = intel_dp->attached_connector->base.dev; |
a4fc5ed6 KP |
130 | |
131 | switch (max_link_bw) { | |
132 | case DP_LINK_BW_1_62: | |
133 | case DP_LINK_BW_2_7: | |
134 | break; | |
d4eead50 | 135 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
8749be86 DL |
136 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) |
137 | /* WaDisableHBR2:skl */ | |
138 | max_link_bw = DP_LINK_BW_2_7; | |
139 | else if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || | |
9bbfd20a | 140 | INTEL_INFO(dev)->gen >= 8) && |
06ea66b6 TP |
141 | intel_dp->dpcd[DP_DPCD_REV] >= 0x12) |
142 | max_link_bw = DP_LINK_BW_5_4; | |
143 | else | |
144 | max_link_bw = DP_LINK_BW_2_7; | |
d4eead50 | 145 | break; |
a4fc5ed6 | 146 | default: |
d4eead50 ID |
147 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
148 | max_link_bw); | |
a4fc5ed6 KP |
149 | max_link_bw = DP_LINK_BW_1_62; |
150 | break; | |
151 | } | |
152 | return max_link_bw; | |
153 | } | |
154 | ||
eeb6324d PZ |
155 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
156 | { | |
157 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
158 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
159 | u8 source_max, sink_max; | |
160 | ||
161 | source_max = 4; | |
162 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
163 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
164 | source_max = 2; | |
165 | ||
166 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
167 | ||
168 | return min(source_max, sink_max); | |
169 | } | |
170 | ||
cd9dde44 AJ |
171 | /* |
172 | * The units on the numbers in the next two are... bizarre. Examples will | |
173 | * make it clearer; this one parallels an example in the eDP spec. | |
174 | * | |
175 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
176 | * | |
177 | * 270000 * 1 * 8 / 10 == 216000 | |
178 | * | |
179 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
180 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
181 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
182 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
183 | * | |
184 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
185 | * get the result in decakilobits instead of kilobits. | |
186 | */ | |
187 | ||
a4fc5ed6 | 188 | static int |
c898261c | 189 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 190 | { |
cd9dde44 | 191 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
192 | } |
193 | ||
fe27d53e DA |
194 | static int |
195 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
196 | { | |
197 | return (max_link_clock * max_lanes * 8) / 10; | |
198 | } | |
199 | ||
c19de8eb | 200 | static enum drm_mode_status |
a4fc5ed6 KP |
201 | intel_dp_mode_valid(struct drm_connector *connector, |
202 | struct drm_display_mode *mode) | |
203 | { | |
df0e9248 | 204 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
205 | struct intel_connector *intel_connector = to_intel_connector(connector); |
206 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
207 | int target_clock = mode->clock; |
208 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 209 | |
dd06f90e JN |
210 | if (is_edp(intel_dp) && fixed_mode) { |
211 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
212 | return MODE_PANEL; |
213 | ||
dd06f90e | 214 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 215 | return MODE_PANEL; |
03afc4a2 DV |
216 | |
217 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
218 | } |
219 | ||
36008365 | 220 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
eeb6324d | 221 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
222 | |
223 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
224 | mode_rate = intel_dp_link_required(target_clock, 18); | |
225 | ||
226 | if (mode_rate > max_rate) | |
c4867936 | 227 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
228 | |
229 | if (mode->clock < 10000) | |
230 | return MODE_CLOCK_LOW; | |
231 | ||
0af78a2b DV |
232 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
233 | return MODE_H_ILLEGAL; | |
234 | ||
a4fc5ed6 KP |
235 | return MODE_OK; |
236 | } | |
237 | ||
a4f1289e | 238 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
239 | { |
240 | int i; | |
241 | uint32_t v = 0; | |
242 | ||
243 | if (src_bytes > 4) | |
244 | src_bytes = 4; | |
245 | for (i = 0; i < src_bytes; i++) | |
246 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
247 | return v; | |
248 | } | |
249 | ||
c2af70e2 | 250 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
251 | { |
252 | int i; | |
253 | if (dst_bytes > 4) | |
254 | dst_bytes = 4; | |
255 | for (i = 0; i < dst_bytes; i++) | |
256 | dst[i] = src >> ((3-i) * 8); | |
257 | } | |
258 | ||
fb0f8fbf KP |
259 | /* hrawclock is 1/4 the FSB frequency */ |
260 | static int | |
261 | intel_hrawclk(struct drm_device *dev) | |
262 | { | |
263 | struct drm_i915_private *dev_priv = dev->dev_private; | |
264 | uint32_t clkcfg; | |
265 | ||
9473c8f4 VP |
266 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
267 | if (IS_VALLEYVIEW(dev)) | |
268 | return 200; | |
269 | ||
fb0f8fbf KP |
270 | clkcfg = I915_READ(CLKCFG); |
271 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
272 | case CLKCFG_FSB_400: | |
273 | return 100; | |
274 | case CLKCFG_FSB_533: | |
275 | return 133; | |
276 | case CLKCFG_FSB_667: | |
277 | return 166; | |
278 | case CLKCFG_FSB_800: | |
279 | return 200; | |
280 | case CLKCFG_FSB_1067: | |
281 | return 266; | |
282 | case CLKCFG_FSB_1333: | |
283 | return 333; | |
284 | /* these two are just a guess; one of them might be right */ | |
285 | case CLKCFG_FSB_1600: | |
286 | case CLKCFG_FSB_1600_ALT: | |
287 | return 400; | |
288 | default: | |
289 | return 133; | |
290 | } | |
291 | } | |
292 | ||
bf13e81b JN |
293 | static void |
294 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 295 | struct intel_dp *intel_dp); |
bf13e81b JN |
296 | static void |
297 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 298 | struct intel_dp *intel_dp); |
bf13e81b | 299 | |
773538e8 VS |
300 | static void pps_lock(struct intel_dp *intel_dp) |
301 | { | |
302 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
303 | struct intel_encoder *encoder = &intel_dig_port->base; | |
304 | struct drm_device *dev = encoder->base.dev; | |
305 | struct drm_i915_private *dev_priv = dev->dev_private; | |
306 | enum intel_display_power_domain power_domain; | |
307 | ||
308 | /* | |
309 | * See vlv_power_sequencer_reset() why we need | |
310 | * a power domain reference here. | |
311 | */ | |
312 | power_domain = intel_display_port_power_domain(encoder); | |
313 | intel_display_power_get(dev_priv, power_domain); | |
314 | ||
315 | mutex_lock(&dev_priv->pps_mutex); | |
316 | } | |
317 | ||
318 | static void pps_unlock(struct intel_dp *intel_dp) | |
319 | { | |
320 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
321 | struct intel_encoder *encoder = &intel_dig_port->base; | |
322 | struct drm_device *dev = encoder->base.dev; | |
323 | struct drm_i915_private *dev_priv = dev->dev_private; | |
324 | enum intel_display_power_domain power_domain; | |
325 | ||
326 | mutex_unlock(&dev_priv->pps_mutex); | |
327 | ||
328 | power_domain = intel_display_port_power_domain(encoder); | |
329 | intel_display_power_put(dev_priv, power_domain); | |
330 | } | |
331 | ||
961a0db0 VS |
332 | static void |
333 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
334 | { | |
335 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
336 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
337 | struct drm_i915_private *dev_priv = dev->dev_private; | |
338 | enum pipe pipe = intel_dp->pps_pipe; | |
d288f65f | 339 | bool pll_enabled; |
961a0db0 VS |
340 | uint32_t DP; |
341 | ||
342 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
343 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
344 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
345 | return; | |
346 | ||
347 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
348 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
349 | ||
350 | /* Preserve the BIOS-computed detected bit. This is | |
351 | * supposed to be read-only. | |
352 | */ | |
353 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
354 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
355 | DP |= DP_PORT_WIDTH(1); | |
356 | DP |= DP_LINK_TRAIN_PAT_1; | |
357 | ||
358 | if (IS_CHERRYVIEW(dev)) | |
359 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
360 | else if (pipe == PIPE_B) | |
361 | DP |= DP_PIPEB_SELECT; | |
362 | ||
d288f65f VS |
363 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
364 | ||
365 | /* | |
366 | * The DPLL for the pipe must be enabled for this to work. | |
367 | * So enable temporarily it if it's not already enabled. | |
368 | */ | |
369 | if (!pll_enabled) | |
370 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? | |
371 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); | |
372 | ||
961a0db0 VS |
373 | /* |
374 | * Similar magic as in intel_dp_enable_port(). | |
375 | * We _must_ do this port enable + disable trick | |
376 | * to make this power seqeuencer lock onto the port. | |
377 | * Otherwise even VDD force bit won't work. | |
378 | */ | |
379 | I915_WRITE(intel_dp->output_reg, DP); | |
380 | POSTING_READ(intel_dp->output_reg); | |
381 | ||
382 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
383 | POSTING_READ(intel_dp->output_reg); | |
384 | ||
385 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
386 | POSTING_READ(intel_dp->output_reg); | |
d288f65f VS |
387 | |
388 | if (!pll_enabled) | |
389 | vlv_force_pll_off(dev, pipe); | |
961a0db0 VS |
390 | } |
391 | ||
bf13e81b JN |
392 | static enum pipe |
393 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
394 | { | |
395 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
396 | struct drm_device *dev = intel_dig_port->base.base.dev; |
397 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
398 | struct intel_encoder *encoder; |
399 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 400 | enum pipe pipe; |
bf13e81b | 401 | |
e39b999a | 402 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 403 | |
a8c3344e VS |
404 | /* We should never land here with regular DP ports */ |
405 | WARN_ON(!is_edp(intel_dp)); | |
406 | ||
a4a5d2f8 VS |
407 | if (intel_dp->pps_pipe != INVALID_PIPE) |
408 | return intel_dp->pps_pipe; | |
409 | ||
410 | /* | |
411 | * We don't have power sequencer currently. | |
412 | * Pick one that's not used by other ports. | |
413 | */ | |
414 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
415 | base.head) { | |
416 | struct intel_dp *tmp; | |
417 | ||
418 | if (encoder->type != INTEL_OUTPUT_EDP) | |
419 | continue; | |
420 | ||
421 | tmp = enc_to_intel_dp(&encoder->base); | |
422 | ||
423 | if (tmp->pps_pipe != INVALID_PIPE) | |
424 | pipes &= ~(1 << tmp->pps_pipe); | |
425 | } | |
426 | ||
427 | /* | |
428 | * Didn't find one. This should not happen since there | |
429 | * are two power sequencers and up to two eDP ports. | |
430 | */ | |
431 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
432 | pipe = PIPE_A; |
433 | else | |
434 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 435 | |
a8c3344e VS |
436 | vlv_steal_power_sequencer(dev, pipe); |
437 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
438 | |
439 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
440 | pipe_name(intel_dp->pps_pipe), | |
441 | port_name(intel_dig_port->port)); | |
442 | ||
443 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
444 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
445 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 446 | |
961a0db0 VS |
447 | /* |
448 | * Even vdd force doesn't work until we've made | |
449 | * the power sequencer lock in on the port. | |
450 | */ | |
451 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
452 | |
453 | return intel_dp->pps_pipe; | |
454 | } | |
455 | ||
6491ab27 VS |
456 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
457 | enum pipe pipe); | |
458 | ||
459 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
460 | enum pipe pipe) | |
461 | { | |
462 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
463 | } | |
464 | ||
465 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
466 | enum pipe pipe) | |
467 | { | |
468 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
469 | } | |
470 | ||
471 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
472 | enum pipe pipe) | |
473 | { | |
474 | return true; | |
475 | } | |
bf13e81b | 476 | |
a4a5d2f8 | 477 | static enum pipe |
6491ab27 VS |
478 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
479 | enum port port, | |
480 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
481 | { |
482 | enum pipe pipe; | |
bf13e81b | 483 | |
bf13e81b JN |
484 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
485 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
486 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
487 | |
488 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
489 | continue; | |
490 | ||
6491ab27 VS |
491 | if (!pipe_check(dev_priv, pipe)) |
492 | continue; | |
493 | ||
a4a5d2f8 | 494 | return pipe; |
bf13e81b JN |
495 | } |
496 | ||
a4a5d2f8 VS |
497 | return INVALID_PIPE; |
498 | } | |
499 | ||
500 | static void | |
501 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
502 | { | |
503 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
504 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
505 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
506 | enum port port = intel_dig_port->port; |
507 | ||
508 | lockdep_assert_held(&dev_priv->pps_mutex); | |
509 | ||
510 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
511 | /* first pick one where the panel is on */ |
512 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
513 | vlv_pipe_has_pp_on); | |
514 | /* didn't find one? pick one where vdd is on */ | |
515 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
516 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
517 | vlv_pipe_has_vdd_on); | |
518 | /* didn't find one? pick one with just the correct port */ | |
519 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
520 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
521 | vlv_pipe_any); | |
a4a5d2f8 VS |
522 | |
523 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
524 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
525 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
526 | port_name(port)); | |
527 | return; | |
bf13e81b JN |
528 | } |
529 | ||
a4a5d2f8 VS |
530 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
531 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
532 | ||
36b5f425 VS |
533 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
534 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
535 | } |
536 | ||
773538e8 VS |
537 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
538 | { | |
539 | struct drm_device *dev = dev_priv->dev; | |
540 | struct intel_encoder *encoder; | |
541 | ||
542 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
543 | return; | |
544 | ||
545 | /* | |
546 | * We can't grab pps_mutex here due to deadlock with power_domain | |
547 | * mutex when power_domain functions are called while holding pps_mutex. | |
548 | * That also means that in order to use pps_pipe the code needs to | |
549 | * hold both a power domain reference and pps_mutex, and the power domain | |
550 | * reference get/put must be done while _not_ holding pps_mutex. | |
551 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
552 | * should use them always. | |
553 | */ | |
554 | ||
555 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
556 | struct intel_dp *intel_dp; | |
557 | ||
558 | if (encoder->type != INTEL_OUTPUT_EDP) | |
559 | continue; | |
560 | ||
561 | intel_dp = enc_to_intel_dp(&encoder->base); | |
562 | intel_dp->pps_pipe = INVALID_PIPE; | |
563 | } | |
bf13e81b JN |
564 | } |
565 | ||
566 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
567 | { | |
568 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
569 | ||
570 | if (HAS_PCH_SPLIT(dev)) | |
571 | return PCH_PP_CONTROL; | |
572 | else | |
573 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
574 | } | |
575 | ||
576 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
577 | { | |
578 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
579 | ||
580 | if (HAS_PCH_SPLIT(dev)) | |
581 | return PCH_PP_STATUS; | |
582 | else | |
583 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
584 | } | |
585 | ||
01527b31 CT |
586 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
587 | This function only applicable when panel PM state is not to be tracked */ | |
588 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
589 | void *unused) | |
590 | { | |
591 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
592 | edp_notifier); | |
593 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
594 | struct drm_i915_private *dev_priv = dev->dev_private; | |
595 | u32 pp_div; | |
596 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
597 | |
598 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
599 | return 0; | |
600 | ||
773538e8 | 601 | pps_lock(intel_dp); |
e39b999a | 602 | |
01527b31 | 603 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
604 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
605 | ||
01527b31 CT |
606 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
607 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
608 | pp_div = I915_READ(pp_div_reg); | |
609 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
610 | ||
611 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
612 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
613 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
614 | msleep(intel_dp->panel_power_cycle_delay); | |
615 | } | |
616 | ||
773538e8 | 617 | pps_unlock(intel_dp); |
e39b999a | 618 | |
01527b31 CT |
619 | return 0; |
620 | } | |
621 | ||
4be73780 | 622 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 623 | { |
30add22d | 624 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
625 | struct drm_i915_private *dev_priv = dev->dev_private; |
626 | ||
e39b999a VS |
627 | lockdep_assert_held(&dev_priv->pps_mutex); |
628 | ||
9a42356b VS |
629 | if (IS_VALLEYVIEW(dev) && |
630 | intel_dp->pps_pipe == INVALID_PIPE) | |
631 | return false; | |
632 | ||
bf13e81b | 633 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
634 | } |
635 | ||
4be73780 | 636 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 637 | { |
30add22d | 638 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
639 | struct drm_i915_private *dev_priv = dev->dev_private; |
640 | ||
e39b999a VS |
641 | lockdep_assert_held(&dev_priv->pps_mutex); |
642 | ||
9a42356b VS |
643 | if (IS_VALLEYVIEW(dev) && |
644 | intel_dp->pps_pipe == INVALID_PIPE) | |
645 | return false; | |
646 | ||
773538e8 | 647 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
648 | } |
649 | ||
9b984dae KP |
650 | static void |
651 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
652 | { | |
30add22d | 653 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 654 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 655 | |
9b984dae KP |
656 | if (!is_edp(intel_dp)) |
657 | return; | |
453c5420 | 658 | |
4be73780 | 659 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
660 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
661 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
662 | I915_READ(_pp_stat_reg(intel_dp)), |
663 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
664 | } |
665 | } | |
666 | ||
9ee32fea DV |
667 | static uint32_t |
668 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
669 | { | |
670 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
671 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
672 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 673 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
674 | uint32_t status; |
675 | bool done; | |
676 | ||
ef04f00d | 677 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 678 | if (has_aux_irq) |
b18ac466 | 679 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 680 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
681 | else |
682 | done = wait_for_atomic(C, 10) == 0; | |
683 | if (!done) | |
684 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
685 | has_aux_irq); | |
686 | #undef C | |
687 | ||
688 | return status; | |
689 | } | |
690 | ||
ec5b01dd | 691 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 692 | { |
174edf1f PZ |
693 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
694 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 695 | |
ec5b01dd DL |
696 | /* |
697 | * The clock divider is based off the hrawclk, and would like to run at | |
698 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 699 | */ |
ec5b01dd DL |
700 | return index ? 0 : intel_hrawclk(dev) / 2; |
701 | } | |
702 | ||
703 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
704 | { | |
705 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
706 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
707 | ||
708 | if (index) | |
709 | return 0; | |
710 | ||
711 | if (intel_dig_port->port == PORT_A) { | |
712 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
b84a1cf8 | 713 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 714 | else |
b84a1cf8 | 715 | return 225; /* eDP input clock at 450Mhz */ |
ec5b01dd DL |
716 | } else { |
717 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
718 | } | |
719 | } | |
720 | ||
721 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
722 | { | |
723 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
724 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
725 | struct drm_i915_private *dev_priv = dev->dev_private; | |
726 | ||
727 | if (intel_dig_port->port == PORT_A) { | |
728 | if (index) | |
729 | return 0; | |
730 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
2c55c336 JN |
731 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
732 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
733 | switch (index) { |
734 | case 0: return 63; | |
735 | case 1: return 72; | |
736 | default: return 0; | |
737 | } | |
ec5b01dd | 738 | } else { |
bc86625a | 739 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 740 | } |
b84a1cf8 RV |
741 | } |
742 | ||
ec5b01dd DL |
743 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
744 | { | |
745 | return index ? 0 : 100; | |
746 | } | |
747 | ||
b6b5e383 DL |
748 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
749 | { | |
750 | /* | |
751 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
752 | * derive the clock from CDCLK automatically). We still implement the | |
753 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
754 | */ | |
755 | return index ? 0 : 1; | |
756 | } | |
757 | ||
5ed12a19 DL |
758 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
759 | bool has_aux_irq, | |
760 | int send_bytes, | |
761 | uint32_t aux_clock_divider) | |
762 | { | |
763 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
764 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
765 | uint32_t precharge, timeout; | |
766 | ||
767 | if (IS_GEN6(dev)) | |
768 | precharge = 3; | |
769 | else | |
770 | precharge = 5; | |
771 | ||
772 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
773 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
774 | else | |
775 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
776 | ||
777 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 778 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 779 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 780 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 781 | timeout | |
788d4433 | 782 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
783 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
784 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 785 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
786 | } |
787 | ||
b9ca5fad DL |
788 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
789 | bool has_aux_irq, | |
790 | int send_bytes, | |
791 | uint32_t unused) | |
792 | { | |
793 | return DP_AUX_CH_CTL_SEND_BUSY | | |
794 | DP_AUX_CH_CTL_DONE | | |
795 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
796 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
797 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
798 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
799 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
800 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
801 | } | |
802 | ||
b84a1cf8 RV |
803 | static int |
804 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 805 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
806 | uint8_t *recv, int recv_size) |
807 | { | |
808 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
809 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
810 | struct drm_i915_private *dev_priv = dev->dev_private; | |
811 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
812 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 813 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
814 | int i, ret, recv_bytes; |
815 | uint32_t status; | |
5ed12a19 | 816 | int try, clock = 0; |
4e6b788c | 817 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
818 | bool vdd; |
819 | ||
773538e8 | 820 | pps_lock(intel_dp); |
e39b999a | 821 | |
72c3500a VS |
822 | /* |
823 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
824 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
825 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
826 | * ourselves. | |
827 | */ | |
1e0560e0 | 828 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
829 | |
830 | /* dp aux is extremely sensitive to irq latency, hence request the | |
831 | * lowest possible wakeup latency and so prevent the cpu from going into | |
832 | * deep sleep states. | |
833 | */ | |
834 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
835 | ||
836 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 837 | |
c67a470b PZ |
838 | intel_aux_display_runtime_get(dev_priv); |
839 | ||
11bee43e JB |
840 | /* Try to wait for any previous AUX channel activity */ |
841 | for (try = 0; try < 3; try++) { | |
ef04f00d | 842 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
843 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
844 | break; | |
845 | msleep(1); | |
846 | } | |
847 | ||
848 | if (try == 3) { | |
849 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
850 | I915_READ(ch_ctl)); | |
9ee32fea DV |
851 | ret = -EBUSY; |
852 | goto out; | |
4f7f7b7e CW |
853 | } |
854 | ||
46a5ae9f PZ |
855 | /* Only 5 data registers! */ |
856 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
857 | ret = -E2BIG; | |
858 | goto out; | |
859 | } | |
860 | ||
ec5b01dd | 861 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
862 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
863 | has_aux_irq, | |
864 | send_bytes, | |
865 | aux_clock_divider); | |
5ed12a19 | 866 | |
bc86625a CW |
867 | /* Must try at least 3 times according to DP spec */ |
868 | for (try = 0; try < 5; try++) { | |
869 | /* Load the send data into the aux channel data registers */ | |
870 | for (i = 0; i < send_bytes; i += 4) | |
871 | I915_WRITE(ch_data + i, | |
a4f1289e RV |
872 | intel_dp_pack_aux(send + i, |
873 | send_bytes - i)); | |
bc86625a CW |
874 | |
875 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 876 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
877 | |
878 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
879 | ||
880 | /* Clear done status and any errors */ | |
881 | I915_WRITE(ch_ctl, | |
882 | status | | |
883 | DP_AUX_CH_CTL_DONE | | |
884 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
885 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
886 | ||
887 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
888 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
889 | continue; | |
890 | if (status & DP_AUX_CH_CTL_DONE) | |
891 | break; | |
892 | } | |
4f7f7b7e | 893 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
894 | break; |
895 | } | |
896 | ||
a4fc5ed6 | 897 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 898 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
899 | ret = -EBUSY; |
900 | goto out; | |
a4fc5ed6 KP |
901 | } |
902 | ||
903 | /* Check for timeout or receive error. | |
904 | * Timeouts occur when the sink is not connected | |
905 | */ | |
a5b3da54 | 906 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 907 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
908 | ret = -EIO; |
909 | goto out; | |
a5b3da54 | 910 | } |
1ae8c0a5 KP |
911 | |
912 | /* Timeouts occur when the device isn't connected, so they're | |
913 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 914 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 915 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
916 | ret = -ETIMEDOUT; |
917 | goto out; | |
a4fc5ed6 KP |
918 | } |
919 | ||
920 | /* Unload any bytes sent back from the other side */ | |
921 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
922 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
923 | if (recv_bytes > recv_size) |
924 | recv_bytes = recv_size; | |
0206e353 | 925 | |
4f7f7b7e | 926 | for (i = 0; i < recv_bytes; i += 4) |
a4f1289e RV |
927 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
928 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 929 | |
9ee32fea DV |
930 | ret = recv_bytes; |
931 | out: | |
932 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 933 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 934 | |
884f19e9 JN |
935 | if (vdd) |
936 | edp_panel_vdd_off(intel_dp, false); | |
937 | ||
773538e8 | 938 | pps_unlock(intel_dp); |
e39b999a | 939 | |
9ee32fea | 940 | return ret; |
a4fc5ed6 KP |
941 | } |
942 | ||
a6c8aff0 JN |
943 | #define BARE_ADDRESS_SIZE 3 |
944 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
945 | static ssize_t |
946 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 947 | { |
9d1a1031 JN |
948 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
949 | uint8_t txbuf[20], rxbuf[20]; | |
950 | size_t txsize, rxsize; | |
a4fc5ed6 | 951 | int ret; |
a4fc5ed6 | 952 | |
9d1a1031 JN |
953 | txbuf[0] = msg->request << 4; |
954 | txbuf[1] = msg->address >> 8; | |
955 | txbuf[2] = msg->address & 0xff; | |
956 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 957 | |
9d1a1031 JN |
958 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
959 | case DP_AUX_NATIVE_WRITE: | |
960 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 961 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
9d1a1031 | 962 | rxsize = 1; |
f51a44b9 | 963 | |
9d1a1031 JN |
964 | if (WARN_ON(txsize > 20)) |
965 | return -E2BIG; | |
a4fc5ed6 | 966 | |
9d1a1031 | 967 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 968 | |
9d1a1031 JN |
969 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
970 | if (ret > 0) { | |
971 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 972 | |
9d1a1031 JN |
973 | /* Return payload size. */ |
974 | ret = msg->size; | |
975 | } | |
976 | break; | |
46a5ae9f | 977 | |
9d1a1031 JN |
978 | case DP_AUX_NATIVE_READ: |
979 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 980 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 981 | rxsize = msg->size + 1; |
a4fc5ed6 | 982 | |
9d1a1031 JN |
983 | if (WARN_ON(rxsize > 20)) |
984 | return -E2BIG; | |
a4fc5ed6 | 985 | |
9d1a1031 JN |
986 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
987 | if (ret > 0) { | |
988 | msg->reply = rxbuf[0] >> 4; | |
989 | /* | |
990 | * Assume happy day, and copy the data. The caller is | |
991 | * expected to check msg->reply before touching it. | |
992 | * | |
993 | * Return payload size. | |
994 | */ | |
995 | ret--; | |
996 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 997 | } |
9d1a1031 JN |
998 | break; |
999 | ||
1000 | default: | |
1001 | ret = -EINVAL; | |
1002 | break; | |
a4fc5ed6 | 1003 | } |
f51a44b9 | 1004 | |
9d1a1031 | 1005 | return ret; |
a4fc5ed6 KP |
1006 | } |
1007 | ||
9d1a1031 JN |
1008 | static void |
1009 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
1010 | { | |
1011 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
1012 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1013 | enum port port = intel_dig_port->port; | |
0b99836f | 1014 | const char *name = NULL; |
ab2c0672 DA |
1015 | int ret; |
1016 | ||
33ad6626 JN |
1017 | switch (port) { |
1018 | case PORT_A: | |
1019 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 1020 | name = "DPDDC-A"; |
ab2c0672 | 1021 | break; |
33ad6626 JN |
1022 | case PORT_B: |
1023 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 1024 | name = "DPDDC-B"; |
ab2c0672 | 1025 | break; |
33ad6626 JN |
1026 | case PORT_C: |
1027 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 1028 | name = "DPDDC-C"; |
ab2c0672 | 1029 | break; |
33ad6626 JN |
1030 | case PORT_D: |
1031 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 1032 | name = "DPDDC-D"; |
33ad6626 JN |
1033 | break; |
1034 | default: | |
1035 | BUG(); | |
ab2c0672 DA |
1036 | } |
1037 | ||
1b1aad75 DL |
1038 | /* |
1039 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
1040 | * | |
1041 | * On Haswell and Broadwell though: | |
1042 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
1043 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
1044 | * | |
1045 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
1046 | */ | |
1047 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) | |
33ad6626 | 1048 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 1049 | |
0b99836f | 1050 | intel_dp->aux.name = name; |
9d1a1031 JN |
1051 | intel_dp->aux.dev = dev->dev; |
1052 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 1053 | |
0b99836f JN |
1054 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1055 | connector->base.kdev->kobj.name); | |
8316f337 | 1056 | |
4f71d0cb | 1057 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 1058 | if (ret < 0) { |
4f71d0cb | 1059 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
1060 | name, ret); |
1061 | return; | |
ab2c0672 | 1062 | } |
8a5e6aeb | 1063 | |
0b99836f JN |
1064 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
1065 | &intel_dp->aux.ddc.dev.kobj, | |
1066 | intel_dp->aux.ddc.dev.kobj.name); | |
1067 | if (ret < 0) { | |
1068 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 1069 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 1070 | } |
a4fc5ed6 KP |
1071 | } |
1072 | ||
80f65de3 ID |
1073 | static void |
1074 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
1075 | { | |
1076 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
1077 | ||
0e32b39c DA |
1078 | if (!intel_connector->mst_port) |
1079 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
1080 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
1081 | intel_connector_unregister(intel_connector); |
1082 | } | |
1083 | ||
5416d871 | 1084 | static void |
c3346ef6 | 1085 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config, int link_clock) |
5416d871 DL |
1086 | { |
1087 | u32 ctrl1; | |
1088 | ||
1089 | pipe_config->ddi_pll_sel = SKL_DPLL0; | |
1090 | pipe_config->dpll_hw_state.cfgcr1 = 0; | |
1091 | pipe_config->dpll_hw_state.cfgcr2 = 0; | |
1092 | ||
1093 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
c3346ef6 SJ |
1094 | switch (link_clock / 2) { |
1095 | case 81000: | |
5416d871 DL |
1096 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_810, |
1097 | SKL_DPLL0); | |
1098 | break; | |
c3346ef6 | 1099 | case 135000: |
5416d871 DL |
1100 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1350, |
1101 | SKL_DPLL0); | |
1102 | break; | |
c3346ef6 | 1103 | case 270000: |
5416d871 DL |
1104 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2700, |
1105 | SKL_DPLL0); | |
1106 | break; | |
c3346ef6 SJ |
1107 | case 162000: |
1108 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1620, | |
1109 | SKL_DPLL0); | |
1110 | break; | |
1111 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which | |
1112 | results in CDCLK change. Need to handle the change of CDCLK by | |
1113 | disabling pipes and re-enabling them */ | |
1114 | case 108000: | |
1115 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_1080, | |
1116 | SKL_DPLL0); | |
1117 | break; | |
1118 | case 216000: | |
1119 | ctrl1 |= DPLL_CRTL1_LINK_RATE(DPLL_CRTL1_LINK_RATE_2160, | |
1120 | SKL_DPLL0); | |
1121 | break; | |
1122 | ||
5416d871 DL |
1123 | } |
1124 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; | |
1125 | } | |
1126 | ||
0e50338c | 1127 | static void |
5cec258b | 1128 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config, int link_bw) |
0e50338c DV |
1129 | { |
1130 | switch (link_bw) { | |
1131 | case DP_LINK_BW_1_62: | |
1132 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
1133 | break; | |
1134 | case DP_LINK_BW_2_7: | |
1135 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
1136 | break; | |
1137 | case DP_LINK_BW_5_4: | |
1138 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
1139 | break; | |
1140 | } | |
1141 | } | |
1142 | ||
fc0f8e25 | 1143 | static int |
f4896f15 | 1144 | intel_read_sink_rates(struct intel_dp *intel_dp, int *sink_rates) |
fc0f8e25 SJ |
1145 | { |
1146 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1147 | int i = 0; | |
1148 | uint16_t val; | |
1149 | ||
1150 | if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) { | |
1151 | /* | |
1152 | * Receiver supports only main-link rate selection by | |
1153 | * link rate table method, so read link rates from | |
1154 | * supported_link_rates | |
1155 | */ | |
1156 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) { | |
1157 | val = le16_to_cpu(intel_dp->supported_rates[i]); | |
1158 | if (val == 0) | |
1159 | break; | |
1160 | ||
1161 | sink_rates[i] = val * 200; | |
1162 | } | |
1163 | ||
1164 | if (i <= 0) | |
1165 | DRM_ERROR("No rates in SUPPORTED_LINK_RATES"); | |
1166 | } | |
1167 | return i; | |
1168 | } | |
1169 | ||
a8f3ef61 | 1170 | static int |
f4896f15 | 1171 | intel_read_source_rates(struct intel_dp *intel_dp, int *source_rates) |
a8f3ef61 SJ |
1172 | { |
1173 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1174 | int i; | |
1175 | int max_default_rate; | |
1176 | ||
1177 | if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) { | |
1178 | for (i = 0; i < ARRAY_SIZE(gen9_rates); ++i) | |
1179 | source_rates[i] = gen9_rates[i]; | |
1180 | } else { | |
1181 | /* Index of the max_link_bw supported + 1 */ | |
1182 | max_default_rate = (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
1183 | for (i = 0; i < max_default_rate; ++i) | |
1184 | source_rates[i] = default_rates[i]; | |
1185 | } | |
1186 | return i; | |
1187 | } | |
1188 | ||
c6bb3538 DV |
1189 | static void |
1190 | intel_dp_set_clock(struct intel_encoder *encoder, | |
5cec258b | 1191 | struct intel_crtc_state *pipe_config, int link_bw) |
c6bb3538 DV |
1192 | { |
1193 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1194 | const struct dp_link_dpll *divisor = NULL; |
1195 | int i, count = 0; | |
c6bb3538 DV |
1196 | |
1197 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1198 | divisor = gen4_dpll; |
1199 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1200 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1201 | divisor = pch_dpll; |
1202 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1203 | } else if (IS_CHERRYVIEW(dev)) { |
1204 | divisor = chv_dpll; | |
1205 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1206 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1207 | divisor = vlv_dpll; |
1208 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1209 | } |
9dd4ffdf CML |
1210 | |
1211 | if (divisor && count) { | |
1212 | for (i = 0; i < count; i++) { | |
1213 | if (link_bw == divisor[i].link_bw) { | |
1214 | pipe_config->dpll = divisor[i].dpll; | |
1215 | pipe_config->clock_set = true; | |
1216 | break; | |
1217 | } | |
1218 | } | |
c6bb3538 DV |
1219 | } |
1220 | } | |
1221 | ||
f4896f15 VS |
1222 | static int intel_supported_rates(const int *source_rates, int source_len, |
1223 | const int *sink_rates, int sink_len, | |
1224 | int *supported_rates) | |
a8f3ef61 SJ |
1225 | { |
1226 | int i = 0, j = 0, k = 0; | |
1227 | ||
1228 | /* For panels with edp version less than 1.4 */ | |
1229 | if (sink_len == 0) { | |
1230 | for (i = 0; i < source_len; ++i) | |
1231 | supported_rates[i] = source_rates[i]; | |
1232 | return source_len; | |
1233 | } | |
1234 | ||
1235 | /* For edp1.4 panels, find the common rates between source and sink */ | |
1236 | while (i < source_len && j < sink_len) { | |
1237 | if (source_rates[i] == sink_rates[j]) { | |
1238 | supported_rates[k] = source_rates[i]; | |
1239 | ++k; | |
1240 | ++i; | |
1241 | ++j; | |
1242 | } else if (source_rates[i] < sink_rates[j]) { | |
1243 | ++i; | |
1244 | } else { | |
1245 | ++j; | |
1246 | } | |
1247 | } | |
1248 | return k; | |
1249 | } | |
1250 | ||
f4896f15 | 1251 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1252 | { |
1253 | int i = 0; | |
1254 | ||
1255 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1256 | if (find == rates[i]) | |
1257 | break; | |
1258 | ||
1259 | return i; | |
1260 | } | |
1261 | ||
00c09d70 | 1262 | bool |
5bfe2ac0 | 1263 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1264 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1265 | { |
5bfe2ac0 | 1266 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1267 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1268 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1269 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1270 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 1271 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 1272 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1273 | int lane_count, clock; |
56071a20 | 1274 | int min_lane_count = 1; |
eeb6324d | 1275 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1276 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1277 | int min_clock = 0; |
a8f3ef61 | 1278 | int max_clock; |
083f9560 | 1279 | int bpp, mode_rate; |
ff9a6750 | 1280 | int link_avail, link_clock; |
f4896f15 VS |
1281 | int sink_rates[8]; |
1282 | int supported_rates[8] = {0}; | |
1283 | int source_rates[8]; | |
a8f3ef61 SJ |
1284 | int source_len, sink_len, supported_len; |
1285 | ||
1286 | sink_len = intel_read_sink_rates(intel_dp, sink_rates); | |
1287 | ||
1288 | source_len = intel_read_source_rates(intel_dp, source_rates); | |
1289 | ||
1290 | supported_len = intel_supported_rates(source_rates, source_len, | |
1291 | sink_rates, sink_len, supported_rates); | |
1292 | ||
1293 | /* No common link rates between source and sink */ | |
1294 | WARN_ON(supported_len <= 0); | |
1295 | ||
1296 | max_clock = supported_len - 1; | |
a4fc5ed6 | 1297 | |
bc7d38a4 | 1298 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1299 | pipe_config->has_pch_encoder = true; |
1300 | ||
03afc4a2 | 1301 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1302 | pipe_config->has_drrs = false; |
9ed109a7 | 1303 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 1304 | |
dd06f90e JN |
1305 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1306 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1307 | adjusted_mode); | |
2dd24552 JB |
1308 | if (!HAS_PCH_SPLIT(dev)) |
1309 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1310 | intel_connector->panel.fitting_mode); | |
1311 | else | |
b074cec8 JB |
1312 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1313 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1314 | } |
1315 | ||
cb1793ce | 1316 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1317 | return false; |
1318 | ||
083f9560 | 1319 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 SJ |
1320 | "max bw %d pixel clock %iKHz\n", |
1321 | max_lane_count, supported_rates[max_clock], | |
241bfc38 | 1322 | adjusted_mode->crtc_clock); |
083f9560 | 1323 | |
36008365 DV |
1324 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1325 | * bpc in between. */ | |
3e7ca985 | 1326 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
1327 | if (is_edp(intel_dp)) { |
1328 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
1329 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
1330 | dev_priv->vbt.edp_bpp); | |
1331 | bpp = dev_priv->vbt.edp_bpp; | |
1332 | } | |
1333 | ||
344c5bbc JN |
1334 | /* |
1335 | * Use the maximum clock and number of lanes the eDP panel | |
1336 | * advertizes being capable of. The panels are generally | |
1337 | * designed to support only a single clock and lane | |
1338 | * configuration, and typically these values correspond to the | |
1339 | * native resolution of the panel. | |
1340 | */ | |
1341 | min_lane_count = max_lane_count; | |
1342 | min_clock = max_clock; | |
7984211e | 1343 | } |
657445fe | 1344 | |
36008365 | 1345 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1346 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1347 | bpp); | |
36008365 | 1348 | |
c6930992 | 1349 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1350 | for (lane_count = min_lane_count; |
1351 | lane_count <= max_lane_count; | |
1352 | lane_count <<= 1) { | |
1353 | ||
1354 | link_clock = supported_rates[clock]; | |
36008365 DV |
1355 | link_avail = intel_dp_max_data_rate(link_clock, |
1356 | lane_count); | |
1357 | ||
1358 | if (mode_rate <= link_avail) { | |
1359 | goto found; | |
1360 | } | |
1361 | } | |
1362 | } | |
1363 | } | |
c4867936 | 1364 | |
36008365 | 1365 | return false; |
3685a8f3 | 1366 | |
36008365 | 1367 | found: |
55bc60db VS |
1368 | if (intel_dp->color_range_auto) { |
1369 | /* | |
1370 | * See: | |
1371 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1372 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1373 | */ | |
18316c8c | 1374 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
1375 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
1376 | else | |
1377 | intel_dp->color_range = 0; | |
1378 | } | |
1379 | ||
3685a8f3 | 1380 | if (intel_dp->color_range) |
50f3b016 | 1381 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 1382 | |
36008365 | 1383 | intel_dp->lane_count = lane_count; |
a8f3ef61 SJ |
1384 | |
1385 | intel_dp->link_bw = | |
1386 | drm_dp_link_rate_to_bw_code(supported_rates[clock]); | |
1387 | ||
1388 | if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) { | |
1389 | intel_dp->rate_select = | |
1390 | rate_to_index(supported_rates[clock], sink_rates); | |
1391 | intel_dp->link_bw = 0; | |
1392 | } | |
1393 | ||
657445fe | 1394 | pipe_config->pipe_bpp = bpp; |
a8f3ef61 | 1395 | pipe_config->port_clock = supported_rates[clock]; |
a4fc5ed6 | 1396 | |
36008365 DV |
1397 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
1398 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 1399 | pipe_config->port_clock, bpp); |
36008365 DV |
1400 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1401 | mode_rate, link_avail); | |
a4fc5ed6 | 1402 | |
03afc4a2 | 1403 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1404 | adjusted_mode->crtc_clock, |
1405 | pipe_config->port_clock, | |
03afc4a2 | 1406 | &pipe_config->dp_m_n); |
9d1a455b | 1407 | |
439d7ac0 | 1408 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1409 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1410 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1411 | intel_link_compute_m_n(bpp, lane_count, |
1412 | intel_connector->panel.downclock_mode->clock, | |
1413 | pipe_config->port_clock, | |
1414 | &pipe_config->dp_m2_n2); | |
1415 | } | |
1416 | ||
5416d871 | 1417 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
c3346ef6 | 1418 | skl_edp_set_pll_config(pipe_config, supported_rates[clock]); |
5416d871 | 1419 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
0e50338c DV |
1420 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); |
1421 | else | |
1422 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 1423 | |
03afc4a2 | 1424 | return true; |
a4fc5ed6 KP |
1425 | } |
1426 | ||
7c62a164 | 1427 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1428 | { |
7c62a164 DV |
1429 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1430 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1431 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1432 | struct drm_i915_private *dev_priv = dev->dev_private; |
1433 | u32 dpa_ctl; | |
1434 | ||
6e3c9717 ACO |
1435 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1436 | crtc->config->port_clock); | |
ea9b6006 DV |
1437 | dpa_ctl = I915_READ(DP_A); |
1438 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1439 | ||
6e3c9717 | 1440 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1441 | /* For a long time we've carried around a ILK-DevA w/a for the |
1442 | * 160MHz clock. If we're really unlucky, it's still required. | |
1443 | */ | |
1444 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1445 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1446 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1447 | } else { |
1448 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1449 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1450 | } |
1ce17038 | 1451 | |
ea9b6006 DV |
1452 | I915_WRITE(DP_A, dpa_ctl); |
1453 | ||
1454 | POSTING_READ(DP_A); | |
1455 | udelay(500); | |
1456 | } | |
1457 | ||
8ac33ed3 | 1458 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1459 | { |
b934223d | 1460 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1461 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1462 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1463 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1464 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
6e3c9717 | 1465 | struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1466 | |
417e822d | 1467 | /* |
1a2eb460 | 1468 | * There are four kinds of DP registers: |
417e822d KP |
1469 | * |
1470 | * IBX PCH | |
1a2eb460 KP |
1471 | * SNB CPU |
1472 | * IVB CPU | |
417e822d KP |
1473 | * CPT PCH |
1474 | * | |
1475 | * IBX PCH and CPU are the same for almost everything, | |
1476 | * except that the CPU DP PLL is configured in this | |
1477 | * register | |
1478 | * | |
1479 | * CPT PCH is quite different, having many bits moved | |
1480 | * to the TRANS_DP_CTL register instead. That | |
1481 | * configuration happens (oddly) in ironlake_pch_enable | |
1482 | */ | |
9c9e7927 | 1483 | |
417e822d KP |
1484 | /* Preserve the BIOS-computed detected bit. This is |
1485 | * supposed to be read-only. | |
1486 | */ | |
1487 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1488 | |
417e822d | 1489 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1490 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1491 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1492 | |
6e3c9717 | 1493 | if (crtc->config->has_audio) |
ea5b213a | 1494 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1495 | |
417e822d | 1496 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1497 | |
bc7d38a4 | 1498 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1499 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1500 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1501 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1502 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1503 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1504 | ||
6aba5b6c | 1505 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1506 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1507 | ||
7c62a164 | 1508 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1509 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1510 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1511 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1512 | |
1513 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1514 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1515 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1516 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1517 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1518 | ||
6aba5b6c | 1519 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1520 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1521 | ||
44f37d1f CML |
1522 | if (!IS_CHERRYVIEW(dev)) { |
1523 | if (crtc->pipe == 1) | |
1524 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1525 | } else { | |
1526 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1527 | } | |
417e822d KP |
1528 | } else { |
1529 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1530 | } |
a4fc5ed6 KP |
1531 | } |
1532 | ||
ffd6749d PZ |
1533 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1534 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1535 | |
1a5ef5b7 PZ |
1536 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1537 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1538 | |
ffd6749d PZ |
1539 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1540 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1541 | |
4be73780 | 1542 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1543 | u32 mask, |
1544 | u32 value) | |
bd943159 | 1545 | { |
30add22d | 1546 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1547 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1548 | u32 pp_stat_reg, pp_ctrl_reg; |
1549 | ||
e39b999a VS |
1550 | lockdep_assert_held(&dev_priv->pps_mutex); |
1551 | ||
bf13e81b JN |
1552 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1553 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1554 | |
99ea7127 | 1555 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1556 | mask, value, |
1557 | I915_READ(pp_stat_reg), | |
1558 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1559 | |
453c5420 | 1560 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1561 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1562 | I915_READ(pp_stat_reg), |
1563 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1564 | } |
54c136d4 CW |
1565 | |
1566 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1567 | } |
32ce697c | 1568 | |
4be73780 | 1569 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1570 | { |
1571 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1572 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1573 | } |
1574 | ||
4be73780 | 1575 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1576 | { |
1577 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1578 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1579 | } |
1580 | ||
4be73780 | 1581 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1582 | { |
1583 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1584 | |
1585 | /* When we disable the VDD override bit last we have to do the manual | |
1586 | * wait. */ | |
1587 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1588 | intel_dp->panel_power_cycle_delay); | |
1589 | ||
4be73780 | 1590 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1591 | } |
1592 | ||
4be73780 | 1593 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1594 | { |
1595 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1596 | intel_dp->backlight_on_delay); | |
1597 | } | |
1598 | ||
4be73780 | 1599 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1600 | { |
1601 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1602 | intel_dp->backlight_off_delay); | |
1603 | } | |
99ea7127 | 1604 | |
832dd3c1 KP |
1605 | /* Read the current pp_control value, unlocking the register if it |
1606 | * is locked | |
1607 | */ | |
1608 | ||
453c5420 | 1609 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1610 | { |
453c5420 JB |
1611 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1612 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1613 | u32 control; | |
832dd3c1 | 1614 | |
e39b999a VS |
1615 | lockdep_assert_held(&dev_priv->pps_mutex); |
1616 | ||
bf13e81b | 1617 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1618 | control &= ~PANEL_UNLOCK_MASK; |
1619 | control |= PANEL_UNLOCK_REGS; | |
1620 | return control; | |
bd943159 KP |
1621 | } |
1622 | ||
951468f3 VS |
1623 | /* |
1624 | * Must be paired with edp_panel_vdd_off(). | |
1625 | * Must hold pps_mutex around the whole on/off sequence. | |
1626 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1627 | */ | |
1e0560e0 | 1628 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1629 | { |
30add22d | 1630 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1631 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1632 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1633 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1634 | enum intel_display_power_domain power_domain; |
5d613501 | 1635 | u32 pp; |
453c5420 | 1636 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1637 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1638 | |
e39b999a VS |
1639 | lockdep_assert_held(&dev_priv->pps_mutex); |
1640 | ||
97af61f5 | 1641 | if (!is_edp(intel_dp)) |
adddaaf4 | 1642 | return false; |
bd943159 | 1643 | |
2c623c11 | 1644 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1645 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1646 | |
4be73780 | 1647 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1648 | return need_to_disable; |
b0665d57 | 1649 | |
4e6e1a54 ID |
1650 | power_domain = intel_display_port_power_domain(intel_encoder); |
1651 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1652 | |
3936fcf4 VS |
1653 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1654 | port_name(intel_dig_port->port)); | |
bd943159 | 1655 | |
4be73780 DV |
1656 | if (!edp_have_panel_power(intel_dp)) |
1657 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1658 | |
453c5420 | 1659 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1660 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1661 | |
bf13e81b JN |
1662 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1663 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1664 | |
1665 | I915_WRITE(pp_ctrl_reg, pp); | |
1666 | POSTING_READ(pp_ctrl_reg); | |
1667 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1668 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1669 | /* |
1670 | * If the panel wasn't on, delay before accessing aux channel | |
1671 | */ | |
4be73780 | 1672 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1673 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1674 | port_name(intel_dig_port->port)); | |
f01eca2e | 1675 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1676 | } |
adddaaf4 JN |
1677 | |
1678 | return need_to_disable; | |
1679 | } | |
1680 | ||
951468f3 VS |
1681 | /* |
1682 | * Must be paired with intel_edp_panel_vdd_off() or | |
1683 | * intel_edp_panel_off(). | |
1684 | * Nested calls to these functions are not allowed since | |
1685 | * we drop the lock. Caller must use some higher level | |
1686 | * locking to prevent nested calls from other threads. | |
1687 | */ | |
b80d6c78 | 1688 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1689 | { |
c695b6b6 | 1690 | bool vdd; |
adddaaf4 | 1691 | |
c695b6b6 VS |
1692 | if (!is_edp(intel_dp)) |
1693 | return; | |
1694 | ||
773538e8 | 1695 | pps_lock(intel_dp); |
c695b6b6 | 1696 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1697 | pps_unlock(intel_dp); |
c695b6b6 | 1698 | |
e2c719b7 | 1699 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1700 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1701 | } |
1702 | ||
4be73780 | 1703 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1704 | { |
30add22d | 1705 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1706 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1707 | struct intel_digital_port *intel_dig_port = |
1708 | dp_to_dig_port(intel_dp); | |
1709 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1710 | enum intel_display_power_domain power_domain; | |
5d613501 | 1711 | u32 pp; |
453c5420 | 1712 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1713 | |
e39b999a | 1714 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1715 | |
15e899a0 | 1716 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1717 | |
15e899a0 | 1718 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1719 | return; |
b0665d57 | 1720 | |
3936fcf4 VS |
1721 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1722 | port_name(intel_dig_port->port)); | |
bd943159 | 1723 | |
be2c9196 VS |
1724 | pp = ironlake_get_pp_control(intel_dp); |
1725 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1726 | |
be2c9196 VS |
1727 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1728 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1729 | |
be2c9196 VS |
1730 | I915_WRITE(pp_ctrl_reg, pp); |
1731 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1732 | |
be2c9196 VS |
1733 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1734 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1735 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1736 | |
be2c9196 VS |
1737 | if ((pp & POWER_TARGET_ON) == 0) |
1738 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1739 | |
be2c9196 VS |
1740 | power_domain = intel_display_port_power_domain(intel_encoder); |
1741 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1742 | } |
5d613501 | 1743 | |
4be73780 | 1744 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1745 | { |
1746 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1747 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1748 | |
773538e8 | 1749 | pps_lock(intel_dp); |
15e899a0 VS |
1750 | if (!intel_dp->want_panel_vdd) |
1751 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1752 | pps_unlock(intel_dp); |
bd943159 KP |
1753 | } |
1754 | ||
aba86890 ID |
1755 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1756 | { | |
1757 | unsigned long delay; | |
1758 | ||
1759 | /* | |
1760 | * Queue the timer to fire a long time from now (relative to the power | |
1761 | * down delay) to keep the panel power up across a sequence of | |
1762 | * operations. | |
1763 | */ | |
1764 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1765 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1766 | } | |
1767 | ||
951468f3 VS |
1768 | /* |
1769 | * Must be paired with edp_panel_vdd_on(). | |
1770 | * Must hold pps_mutex around the whole on/off sequence. | |
1771 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1772 | */ | |
4be73780 | 1773 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1774 | { |
e39b999a VS |
1775 | struct drm_i915_private *dev_priv = |
1776 | intel_dp_to_dev(intel_dp)->dev_private; | |
1777 | ||
1778 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1779 | ||
97af61f5 KP |
1780 | if (!is_edp(intel_dp)) |
1781 | return; | |
5d613501 | 1782 | |
e2c719b7 | 1783 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1784 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1785 | |
bd943159 KP |
1786 | intel_dp->want_panel_vdd = false; |
1787 | ||
aba86890 | 1788 | if (sync) |
4be73780 | 1789 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1790 | else |
1791 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1792 | } |
1793 | ||
9f0fb5be | 1794 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1795 | { |
30add22d | 1796 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1797 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1798 | u32 pp; |
453c5420 | 1799 | u32 pp_ctrl_reg; |
9934c132 | 1800 | |
9f0fb5be VS |
1801 | lockdep_assert_held(&dev_priv->pps_mutex); |
1802 | ||
97af61f5 | 1803 | if (!is_edp(intel_dp)) |
bd943159 | 1804 | return; |
99ea7127 | 1805 | |
3936fcf4 VS |
1806 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1807 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1808 | |
e7a89ace VS |
1809 | if (WARN(edp_have_panel_power(intel_dp), |
1810 | "eDP port %c panel power already on\n", | |
1811 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1812 | return; |
9934c132 | 1813 | |
4be73780 | 1814 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1815 | |
bf13e81b | 1816 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1817 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1818 | if (IS_GEN5(dev)) { |
1819 | /* ILK workaround: disable reset around power sequence */ | |
1820 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1821 | I915_WRITE(pp_ctrl_reg, pp); |
1822 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1823 | } |
37c6c9b0 | 1824 | |
1c0ae80a | 1825 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1826 | if (!IS_GEN5(dev)) |
1827 | pp |= PANEL_POWER_RESET; | |
1828 | ||
453c5420 JB |
1829 | I915_WRITE(pp_ctrl_reg, pp); |
1830 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1831 | |
4be73780 | 1832 | wait_panel_on(intel_dp); |
dce56b3c | 1833 | intel_dp->last_power_on = jiffies; |
9934c132 | 1834 | |
05ce1a49 KP |
1835 | if (IS_GEN5(dev)) { |
1836 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1837 | I915_WRITE(pp_ctrl_reg, pp); |
1838 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1839 | } |
9f0fb5be | 1840 | } |
e39b999a | 1841 | |
9f0fb5be VS |
1842 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1843 | { | |
1844 | if (!is_edp(intel_dp)) | |
1845 | return; | |
1846 | ||
1847 | pps_lock(intel_dp); | |
1848 | edp_panel_on(intel_dp); | |
773538e8 | 1849 | pps_unlock(intel_dp); |
9934c132 JB |
1850 | } |
1851 | ||
9f0fb5be VS |
1852 | |
1853 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1854 | { |
4e6e1a54 ID |
1855 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1856 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1857 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1858 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1859 | enum intel_display_power_domain power_domain; |
99ea7127 | 1860 | u32 pp; |
453c5420 | 1861 | u32 pp_ctrl_reg; |
9934c132 | 1862 | |
9f0fb5be VS |
1863 | lockdep_assert_held(&dev_priv->pps_mutex); |
1864 | ||
97af61f5 KP |
1865 | if (!is_edp(intel_dp)) |
1866 | return; | |
37c6c9b0 | 1867 | |
3936fcf4 VS |
1868 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
1869 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 1870 | |
3936fcf4 VS |
1871 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
1872 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 1873 | |
453c5420 | 1874 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1875 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1876 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1877 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1878 | EDP_BLC_ENABLE); | |
453c5420 | 1879 | |
bf13e81b | 1880 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1881 | |
849e39f5 PZ |
1882 | intel_dp->want_panel_vdd = false; |
1883 | ||
453c5420 JB |
1884 | I915_WRITE(pp_ctrl_reg, pp); |
1885 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1886 | |
dce56b3c | 1887 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1888 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1889 | |
1890 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1891 | power_domain = intel_display_port_power_domain(intel_encoder); |
1892 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 1893 | } |
e39b999a | 1894 | |
9f0fb5be VS |
1895 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
1896 | { | |
1897 | if (!is_edp(intel_dp)) | |
1898 | return; | |
e39b999a | 1899 | |
9f0fb5be VS |
1900 | pps_lock(intel_dp); |
1901 | edp_panel_off(intel_dp); | |
773538e8 | 1902 | pps_unlock(intel_dp); |
9934c132 JB |
1903 | } |
1904 | ||
1250d107 JN |
1905 | /* Enable backlight in the panel power control. */ |
1906 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 1907 | { |
da63a9f2 PZ |
1908 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1909 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1910 | struct drm_i915_private *dev_priv = dev->dev_private; |
1911 | u32 pp; | |
453c5420 | 1912 | u32 pp_ctrl_reg; |
32f9d658 | 1913 | |
01cb9ea6 JB |
1914 | /* |
1915 | * If we enable the backlight right away following a panel power | |
1916 | * on, we may see slight flicker as the panel syncs with the eDP | |
1917 | * link. So delay a bit to make sure the image is solid before | |
1918 | * allowing it to appear. | |
1919 | */ | |
4be73780 | 1920 | wait_backlight_on(intel_dp); |
e39b999a | 1921 | |
773538e8 | 1922 | pps_lock(intel_dp); |
e39b999a | 1923 | |
453c5420 | 1924 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1925 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1926 | |
bf13e81b | 1927 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1928 | |
1929 | I915_WRITE(pp_ctrl_reg, pp); | |
1930 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 1931 | |
773538e8 | 1932 | pps_unlock(intel_dp); |
32f9d658 ZW |
1933 | } |
1934 | ||
1250d107 JN |
1935 | /* Enable backlight PWM and backlight PP control. */ |
1936 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
1937 | { | |
1938 | if (!is_edp(intel_dp)) | |
1939 | return; | |
1940 | ||
1941 | DRM_DEBUG_KMS("\n"); | |
1942 | ||
1943 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1944 | _intel_edp_backlight_on(intel_dp); | |
1945 | } | |
1946 | ||
1947 | /* Disable backlight in the panel power control. */ | |
1948 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 1949 | { |
30add22d | 1950 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1951 | struct drm_i915_private *dev_priv = dev->dev_private; |
1952 | u32 pp; | |
453c5420 | 1953 | u32 pp_ctrl_reg; |
32f9d658 | 1954 | |
f01eca2e KP |
1955 | if (!is_edp(intel_dp)) |
1956 | return; | |
1957 | ||
773538e8 | 1958 | pps_lock(intel_dp); |
e39b999a | 1959 | |
453c5420 | 1960 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1961 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1962 | |
bf13e81b | 1963 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1964 | |
1965 | I915_WRITE(pp_ctrl_reg, pp); | |
1966 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 1967 | |
773538e8 | 1968 | pps_unlock(intel_dp); |
e39b999a VS |
1969 | |
1970 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 1971 | edp_wait_backlight_off(intel_dp); |
1250d107 | 1972 | } |
f7d2323c | 1973 | |
1250d107 JN |
1974 | /* Disable backlight PP control and backlight PWM. */ |
1975 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
1976 | { | |
1977 | if (!is_edp(intel_dp)) | |
1978 | return; | |
1979 | ||
1980 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 1981 | |
1250d107 | 1982 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 1983 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 1984 | } |
a4fc5ed6 | 1985 | |
73580fb7 JN |
1986 | /* |
1987 | * Hook for controlling the panel power control backlight through the bl_power | |
1988 | * sysfs attribute. Take care to handle multiple calls. | |
1989 | */ | |
1990 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
1991 | bool enable) | |
1992 | { | |
1993 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
1994 | bool is_enabled; |
1995 | ||
773538e8 | 1996 | pps_lock(intel_dp); |
e39b999a | 1997 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 1998 | pps_unlock(intel_dp); |
73580fb7 JN |
1999 | |
2000 | if (is_enabled == enable) | |
2001 | return; | |
2002 | ||
23ba9373 JN |
2003 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2004 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2005 | |
2006 | if (enable) | |
2007 | _intel_edp_backlight_on(intel_dp); | |
2008 | else | |
2009 | _intel_edp_backlight_off(intel_dp); | |
2010 | } | |
2011 | ||
2bd2ad64 | 2012 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2013 | { |
da63a9f2 PZ |
2014 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2015 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2016 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2017 | struct drm_i915_private *dev_priv = dev->dev_private; |
2018 | u32 dpa_ctl; | |
2019 | ||
2bd2ad64 DV |
2020 | assert_pipe_disabled(dev_priv, |
2021 | to_intel_crtc(crtc)->pipe); | |
2022 | ||
d240f20f JB |
2023 | DRM_DEBUG_KMS("\n"); |
2024 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2025 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2026 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2027 | ||
2028 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2029 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2030 | * enable bits here to ensure that we don't enable too much. */ | |
2031 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2032 | intel_dp->DP |= DP_PLL_ENABLE; | |
2033 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2034 | POSTING_READ(DP_A); |
2035 | udelay(200); | |
d240f20f JB |
2036 | } |
2037 | ||
2bd2ad64 | 2038 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2039 | { |
da63a9f2 PZ |
2040 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2041 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2042 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2043 | struct drm_i915_private *dev_priv = dev->dev_private; |
2044 | u32 dpa_ctl; | |
2045 | ||
2bd2ad64 DV |
2046 | assert_pipe_disabled(dev_priv, |
2047 | to_intel_crtc(crtc)->pipe); | |
2048 | ||
d240f20f | 2049 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2050 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2051 | "dp pll off, should be on\n"); | |
2052 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2053 | ||
2054 | /* We can't rely on the value tracked for the DP register in | |
2055 | * intel_dp->DP because link_down must not change that (otherwise link | |
2056 | * re-training will fail. */ | |
298b0b39 | 2057 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2058 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2059 | POSTING_READ(DP_A); |
d240f20f JB |
2060 | udelay(200); |
2061 | } | |
2062 | ||
c7ad3810 | 2063 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2064 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2065 | { |
2066 | int ret, i; | |
2067 | ||
2068 | /* Should have a valid DPCD by this point */ | |
2069 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2070 | return; | |
2071 | ||
2072 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2073 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2074 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2075 | } else { |
2076 | /* | |
2077 | * When turning on, we need to retry for 1ms to give the sink | |
2078 | * time to wake up. | |
2079 | */ | |
2080 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2081 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2082 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2083 | if (ret == 1) |
2084 | break; | |
2085 | msleep(1); | |
2086 | } | |
2087 | } | |
f9cac721 JN |
2088 | |
2089 | if (ret != 1) | |
2090 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2091 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2092 | } |
2093 | ||
19d8fe15 DV |
2094 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2095 | enum pipe *pipe) | |
d240f20f | 2096 | { |
19d8fe15 | 2097 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2098 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2099 | struct drm_device *dev = encoder->base.dev; |
2100 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2101 | enum intel_display_power_domain power_domain; |
2102 | u32 tmp; | |
2103 | ||
2104 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2105 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2106 | return false; |
2107 | ||
2108 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2109 | |
2110 | if (!(tmp & DP_PORT_EN)) | |
2111 | return false; | |
2112 | ||
bc7d38a4 | 2113 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 2114 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
2115 | } else if (IS_CHERRYVIEW(dev)) { |
2116 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 2117 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
2118 | *pipe = PORT_TO_PIPE(tmp); |
2119 | } else { | |
2120 | u32 trans_sel; | |
2121 | u32 trans_dp; | |
2122 | int i; | |
2123 | ||
2124 | switch (intel_dp->output_reg) { | |
2125 | case PCH_DP_B: | |
2126 | trans_sel = TRANS_DP_PORT_SEL_B; | |
2127 | break; | |
2128 | case PCH_DP_C: | |
2129 | trans_sel = TRANS_DP_PORT_SEL_C; | |
2130 | break; | |
2131 | case PCH_DP_D: | |
2132 | trans_sel = TRANS_DP_PORT_SEL_D; | |
2133 | break; | |
2134 | default: | |
2135 | return true; | |
2136 | } | |
2137 | ||
055e393f | 2138 | for_each_pipe(dev_priv, i) { |
19d8fe15 DV |
2139 | trans_dp = I915_READ(TRANS_DP_CTL(i)); |
2140 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
2141 | *pipe = i; | |
2142 | return true; | |
2143 | } | |
2144 | } | |
19d8fe15 | 2145 | |
4a0833ec DV |
2146 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2147 | intel_dp->output_reg); | |
2148 | } | |
d240f20f | 2149 | |
19d8fe15 DV |
2150 | return true; |
2151 | } | |
d240f20f | 2152 | |
045ac3b5 | 2153 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2154 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2155 | { |
2156 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2157 | u32 tmp, flags = 0; |
63000ef6 XZ |
2158 | struct drm_device *dev = encoder->base.dev; |
2159 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2160 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2161 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2162 | int dotclock; |
045ac3b5 | 2163 | |
9ed109a7 DV |
2164 | tmp = I915_READ(intel_dp->output_reg); |
2165 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
2166 | pipe_config->has_audio = true; | |
2167 | ||
63000ef6 | 2168 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
2169 | if (tmp & DP_SYNC_HS_HIGH) |
2170 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2171 | else | |
2172 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2173 | |
63000ef6 XZ |
2174 | if (tmp & DP_SYNC_VS_HIGH) |
2175 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2176 | else | |
2177 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2178 | } else { | |
2179 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
2180 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
2181 | flags |= DRM_MODE_FLAG_PHSYNC; | |
2182 | else | |
2183 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2184 | |
63000ef6 XZ |
2185 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
2186 | flags |= DRM_MODE_FLAG_PVSYNC; | |
2187 | else | |
2188 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2189 | } | |
045ac3b5 | 2190 | |
2d112de7 | 2191 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2192 | |
8c875fca VS |
2193 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2194 | tmp & DP_COLOR_RANGE_16_235) | |
2195 | pipe_config->limited_color_range = true; | |
2196 | ||
eb14cb74 VS |
2197 | pipe_config->has_dp_encoder = true; |
2198 | ||
2199 | intel_dp_get_m_n(crtc, pipe_config); | |
2200 | ||
18442d08 | 2201 | if (port == PORT_A) { |
f1f644dc JB |
2202 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2203 | pipe_config->port_clock = 162000; | |
2204 | else | |
2205 | pipe_config->port_clock = 270000; | |
2206 | } | |
18442d08 VS |
2207 | |
2208 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2209 | &pipe_config->dp_m_n); | |
2210 | ||
2211 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2212 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2213 | ||
2d112de7 | 2214 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2215 | |
c6cd2ee2 JN |
2216 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2217 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2218 | /* | |
2219 | * This is a big fat ugly hack. | |
2220 | * | |
2221 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2222 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2223 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2224 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2225 | * max, not what it tells us to use. | |
2226 | * | |
2227 | * Note: This will still be broken if the eDP panel is not lit | |
2228 | * up by the BIOS, and thus we can't get the mode at module | |
2229 | * load. | |
2230 | */ | |
2231 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2232 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2233 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2234 | } | |
045ac3b5 JB |
2235 | } |
2236 | ||
e8cb4558 | 2237 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2238 | { |
e8cb4558 | 2239 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2240 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2241 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2242 | ||
6e3c9717 | 2243 | if (crtc->config->has_audio) |
495a5bb8 | 2244 | intel_audio_codec_disable(encoder); |
6cb49835 | 2245 | |
b32c6f48 RV |
2246 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2247 | intel_psr_disable(intel_dp); | |
2248 | ||
6cb49835 DV |
2249 | /* Make sure the panel is off before trying to change the mode. But also |
2250 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2251 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2252 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2253 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2254 | intel_edp_panel_off(intel_dp); |
3739850b | 2255 | |
08aff3fe VS |
2256 | /* disable the port before the pipe on g4x */ |
2257 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2258 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2259 | } |
2260 | ||
08aff3fe | 2261 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2262 | { |
2bd2ad64 | 2263 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2264 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2265 | |
49277c31 | 2266 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2267 | if (port == PORT_A) |
2268 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2269 | } |
2270 | ||
2271 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2272 | { | |
2273 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2274 | ||
2275 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2276 | } |
2277 | ||
580d3811 VS |
2278 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2279 | { | |
2280 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2281 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2282 | struct drm_device *dev = encoder->base.dev; | |
2283 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2284 | struct intel_crtc *intel_crtc = | |
2285 | to_intel_crtc(encoder->base.crtc); | |
2286 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2287 | enum pipe pipe = intel_crtc->pipe; | |
2288 | u32 val; | |
2289 | ||
2290 | intel_dp_link_down(intel_dp); | |
2291 | ||
2292 | mutex_lock(&dev_priv->dpio_lock); | |
2293 | ||
2294 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2295 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2296 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2297 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2298 | |
97fd4d5c VS |
2299 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2300 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2301 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2302 | ||
2303 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2304 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2305 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2306 | ||
2307 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2308 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2309 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2310 | |
2311 | mutex_unlock(&dev_priv->dpio_lock); | |
2312 | } | |
2313 | ||
7b13b58a VS |
2314 | static void |
2315 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2316 | uint32_t *DP, | |
2317 | uint8_t dp_train_pat) | |
2318 | { | |
2319 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2320 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2321 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2322 | enum port port = intel_dig_port->port; | |
2323 | ||
2324 | if (HAS_DDI(dev)) { | |
2325 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2326 | ||
2327 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2328 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2329 | else | |
2330 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2331 | ||
2332 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2333 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2334 | case DP_TRAINING_PATTERN_DISABLE: | |
2335 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2336 | ||
2337 | break; | |
2338 | case DP_TRAINING_PATTERN_1: | |
2339 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2340 | break; | |
2341 | case DP_TRAINING_PATTERN_2: | |
2342 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2343 | break; | |
2344 | case DP_TRAINING_PATTERN_3: | |
2345 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2346 | break; | |
2347 | } | |
2348 | I915_WRITE(DP_TP_CTL(port), temp); | |
2349 | ||
2350 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { | |
2351 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
2352 | ||
2353 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2354 | case DP_TRAINING_PATTERN_DISABLE: | |
2355 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2356 | break; | |
2357 | case DP_TRAINING_PATTERN_1: | |
2358 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2359 | break; | |
2360 | case DP_TRAINING_PATTERN_2: | |
2361 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2362 | break; | |
2363 | case DP_TRAINING_PATTERN_3: | |
2364 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2365 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2366 | break; | |
2367 | } | |
2368 | ||
2369 | } else { | |
2370 | if (IS_CHERRYVIEW(dev)) | |
2371 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2372 | else | |
2373 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2374 | ||
2375 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2376 | case DP_TRAINING_PATTERN_DISABLE: | |
2377 | *DP |= DP_LINK_TRAIN_OFF; | |
2378 | break; | |
2379 | case DP_TRAINING_PATTERN_1: | |
2380 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2381 | break; | |
2382 | case DP_TRAINING_PATTERN_2: | |
2383 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2384 | break; | |
2385 | case DP_TRAINING_PATTERN_3: | |
2386 | if (IS_CHERRYVIEW(dev)) { | |
2387 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2388 | } else { | |
2389 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2390 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2391 | } | |
2392 | break; | |
2393 | } | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2398 | { | |
2399 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2400 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2401 | ||
7b13b58a VS |
2402 | /* enable with pattern 1 (as per spec) */ |
2403 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2404 | DP_TRAINING_PATTERN_1); | |
2405 | ||
2406 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2407 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2408 | |
2409 | /* | |
2410 | * Magic for VLV/CHV. We _must_ first set up the register | |
2411 | * without actually enabling the port, and then do another | |
2412 | * write to enable the port. Otherwise link training will | |
2413 | * fail when the power sequencer is freshly used for this port. | |
2414 | */ | |
2415 | intel_dp->DP |= DP_PORT_EN; | |
2416 | ||
2417 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2418 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2419 | } |
2420 | ||
e8cb4558 | 2421 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2422 | { |
e8cb4558 DV |
2423 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2424 | struct drm_device *dev = encoder->base.dev; | |
2425 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2426 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2427 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
5d613501 | 2428 | |
0c33d8d7 DV |
2429 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2430 | return; | |
5d613501 | 2431 | |
093e3f13 VS |
2432 | pps_lock(intel_dp); |
2433 | ||
2434 | if (IS_VALLEYVIEW(dev)) | |
2435 | vlv_init_panel_power_sequencer(intel_dp); | |
2436 | ||
7b13b58a | 2437 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2438 | |
2439 | edp_panel_vdd_on(intel_dp); | |
2440 | edp_panel_on(intel_dp); | |
2441 | edp_panel_vdd_off(intel_dp, true); | |
2442 | ||
2443 | pps_unlock(intel_dp); | |
2444 | ||
61234fa5 VS |
2445 | if (IS_VALLEYVIEW(dev)) |
2446 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp)); | |
2447 | ||
f01eca2e | 2448 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2449 | intel_dp_start_link_train(intel_dp); |
33a34e4e | 2450 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2451 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2452 | |
6e3c9717 | 2453 | if (crtc->config->has_audio) { |
c1dec79a JN |
2454 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2455 | pipe_name(crtc->pipe)); | |
2456 | intel_audio_codec_enable(encoder); | |
2457 | } | |
ab1f90f9 | 2458 | } |
89b667f8 | 2459 | |
ecff4f3b JN |
2460 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2461 | { | |
828f5c6e JN |
2462 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2463 | ||
ecff4f3b | 2464 | intel_enable_dp(encoder); |
4be73780 | 2465 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2466 | } |
89b667f8 | 2467 | |
ab1f90f9 JN |
2468 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2469 | { | |
828f5c6e JN |
2470 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2471 | ||
4be73780 | 2472 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2473 | intel_psr_enable(intel_dp); |
d240f20f JB |
2474 | } |
2475 | ||
ecff4f3b | 2476 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2477 | { |
2478 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2479 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2480 | ||
8ac33ed3 DV |
2481 | intel_dp_prepare(encoder); |
2482 | ||
d41f1efb DV |
2483 | /* Only ilk+ has port A */ |
2484 | if (dport->port == PORT_A) { | |
2485 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2486 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2487 | } |
ab1f90f9 JN |
2488 | } |
2489 | ||
83b84597 VS |
2490 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2491 | { | |
2492 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2493 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2494 | enum pipe pipe = intel_dp->pps_pipe; | |
2495 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2496 | ||
2497 | edp_panel_vdd_off_sync(intel_dp); | |
2498 | ||
2499 | /* | |
2500 | * VLV seems to get confused when multiple power seqeuencers | |
2501 | * have the same port selected (even if only one has power/vdd | |
2502 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2503 | * CHV on the other hand doesn't seem to mind having the same port | |
2504 | * selected in multiple power seqeuencers, but let's clear the | |
2505 | * port select always when logically disconnecting a power sequencer | |
2506 | * from a port. | |
2507 | */ | |
2508 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2509 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2510 | I915_WRITE(pp_on_reg, 0); | |
2511 | POSTING_READ(pp_on_reg); | |
2512 | ||
2513 | intel_dp->pps_pipe = INVALID_PIPE; | |
2514 | } | |
2515 | ||
a4a5d2f8 VS |
2516 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2517 | enum pipe pipe) | |
2518 | { | |
2519 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2520 | struct intel_encoder *encoder; | |
2521 | ||
2522 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2523 | ||
ac3c12e4 VS |
2524 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2525 | return; | |
2526 | ||
a4a5d2f8 VS |
2527 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2528 | base.head) { | |
2529 | struct intel_dp *intel_dp; | |
773538e8 | 2530 | enum port port; |
a4a5d2f8 VS |
2531 | |
2532 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2533 | continue; | |
2534 | ||
2535 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2536 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2537 | |
2538 | if (intel_dp->pps_pipe != pipe) | |
2539 | continue; | |
2540 | ||
2541 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2542 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2543 | |
034e43c6 VS |
2544 | WARN(encoder->connectors_active, |
2545 | "stealing pipe %c power sequencer from active eDP port %c\n", | |
2546 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2547 | |
a4a5d2f8 | 2548 | /* make sure vdd is off before we steal it */ |
83b84597 | 2549 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2550 | } |
2551 | } | |
2552 | ||
2553 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2554 | { | |
2555 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2556 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2557 | struct drm_device *dev = encoder->base.dev; | |
2558 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2559 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2560 | |
2561 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2562 | ||
093e3f13 VS |
2563 | if (!is_edp(intel_dp)) |
2564 | return; | |
2565 | ||
a4a5d2f8 VS |
2566 | if (intel_dp->pps_pipe == crtc->pipe) |
2567 | return; | |
2568 | ||
2569 | /* | |
2570 | * If another power sequencer was being used on this | |
2571 | * port previously make sure to turn off vdd there while | |
2572 | * we still have control of it. | |
2573 | */ | |
2574 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2575 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2576 | |
2577 | /* | |
2578 | * We may be stealing the power | |
2579 | * sequencer from another port. | |
2580 | */ | |
2581 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2582 | ||
2583 | /* now it's all ours */ | |
2584 | intel_dp->pps_pipe = crtc->pipe; | |
2585 | ||
2586 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2587 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2588 | ||
2589 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2590 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2591 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2592 | } |
2593 | ||
ab1f90f9 | 2594 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2595 | { |
2bd2ad64 | 2596 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2597 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2598 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2599 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2600 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2601 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2602 | int pipe = intel_crtc->pipe; |
2603 | u32 val; | |
a4fc5ed6 | 2604 | |
ab1f90f9 | 2605 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2606 | |
ab3c759a | 2607 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2608 | val = 0; |
2609 | if (pipe) | |
2610 | val |= (1<<21); | |
2611 | else | |
2612 | val &= ~(1<<21); | |
2613 | val |= 0x001000c4; | |
ab3c759a CML |
2614 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2615 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2616 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2617 | |
ab1f90f9 JN |
2618 | mutex_unlock(&dev_priv->dpio_lock); |
2619 | ||
2620 | intel_enable_dp(encoder); | |
89b667f8 JB |
2621 | } |
2622 | ||
ecff4f3b | 2623 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2624 | { |
2625 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2626 | struct drm_device *dev = encoder->base.dev; | |
2627 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2628 | struct intel_crtc *intel_crtc = |
2629 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2630 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2631 | int pipe = intel_crtc->pipe; |
89b667f8 | 2632 | |
8ac33ed3 DV |
2633 | intel_dp_prepare(encoder); |
2634 | ||
89b667f8 | 2635 | /* Program Tx lane resets to default */ |
0980a60f | 2636 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2637 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2638 | DPIO_PCS_TX_LANE2_RESET | |
2639 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2640 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2641 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2642 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2643 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2644 | DPIO_PCS_CLK_SOFT_RESET); | |
2645 | ||
2646 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2647 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2648 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2649 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2650 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2651 | } |
2652 | ||
e4a1d846 CML |
2653 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2654 | { | |
2655 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2656 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2657 | struct drm_device *dev = encoder->base.dev; | |
2658 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2659 | struct intel_crtc *intel_crtc = |
2660 | to_intel_crtc(encoder->base.crtc); | |
2661 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2662 | int pipe = intel_crtc->pipe; | |
2663 | int data, i; | |
949c1d43 | 2664 | u32 val; |
e4a1d846 | 2665 | |
e4a1d846 | 2666 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 | 2667 | |
570e2a74 VS |
2668 | /* allow hardware to manage TX FIFO reset source */ |
2669 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2670 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2671 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2672 | ||
2673 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2674 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2675 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2676 | ||
949c1d43 | 2677 | /* Deassert soft data lane reset*/ |
97fd4d5c | 2678 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2679 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2680 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2681 | ||
2682 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2683 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2684 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2685 | ||
2686 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2687 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2688 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2689 | |
97fd4d5c | 2690 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2691 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2692 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2693 | |
2694 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2695 | for (i = 0; i < 4; i++) { |
2696 | /* Set the latency optimal bit */ | |
2697 | data = (i == 1) ? 0x0 : 0x6; | |
2698 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2699 | data << DPIO_FRC_LATENCY_SHFIT); | |
2700 | ||
2701 | /* Set the upar bit */ | |
2702 | data = (i == 1) ? 0x0 : 0x1; | |
2703 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2704 | data << DPIO_UPAR_SHIFT); | |
2705 | } | |
2706 | ||
2707 | /* Data lane stagger programming */ | |
2708 | /* FIXME: Fix up value only after power analysis */ | |
2709 | ||
2710 | mutex_unlock(&dev_priv->dpio_lock); | |
2711 | ||
e4a1d846 | 2712 | intel_enable_dp(encoder); |
e4a1d846 CML |
2713 | } |
2714 | ||
9197c88b VS |
2715 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2716 | { | |
2717 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2718 | struct drm_device *dev = encoder->base.dev; | |
2719 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2720 | struct intel_crtc *intel_crtc = | |
2721 | to_intel_crtc(encoder->base.crtc); | |
2722 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2723 | enum pipe pipe = intel_crtc->pipe; | |
2724 | u32 val; | |
2725 | ||
625695f8 VS |
2726 | intel_dp_prepare(encoder); |
2727 | ||
9197c88b VS |
2728 | mutex_lock(&dev_priv->dpio_lock); |
2729 | ||
b9e5ac3c VS |
2730 | /* program left/right clock distribution */ |
2731 | if (pipe != PIPE_B) { | |
2732 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2733 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2734 | if (ch == DPIO_CH0) | |
2735 | val |= CHV_BUFLEFTENA1_FORCE; | |
2736 | if (ch == DPIO_CH1) | |
2737 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2738 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2739 | } else { | |
2740 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2741 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2742 | if (ch == DPIO_CH0) | |
2743 | val |= CHV_BUFLEFTENA2_FORCE; | |
2744 | if (ch == DPIO_CH1) | |
2745 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2746 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2747 | } | |
2748 | ||
9197c88b VS |
2749 | /* program clock channel usage */ |
2750 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2751 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2752 | if (pipe != PIPE_B) | |
2753 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2754 | else | |
2755 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2756 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2757 | ||
2758 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2759 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2760 | if (pipe != PIPE_B) | |
2761 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2762 | else | |
2763 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2764 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2765 | ||
2766 | /* | |
2767 | * This a a bit weird since generally CL | |
2768 | * matches the pipe, but here we need to | |
2769 | * pick the CL based on the port. | |
2770 | */ | |
2771 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2772 | if (pipe != PIPE_B) | |
2773 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2774 | else | |
2775 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2776 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2777 | ||
2778 | mutex_unlock(&dev_priv->dpio_lock); | |
2779 | } | |
2780 | ||
a4fc5ed6 | 2781 | /* |
df0c237d JB |
2782 | * Native read with retry for link status and receiver capability reads for |
2783 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2784 | * |
2785 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2786 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2787 | */ |
9d1a1031 JN |
2788 | static ssize_t |
2789 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2790 | void *buffer, size_t size) | |
a4fc5ed6 | 2791 | { |
9d1a1031 JN |
2792 | ssize_t ret; |
2793 | int i; | |
61da5fab | 2794 | |
f6a19066 VS |
2795 | /* |
2796 | * Sometime we just get the same incorrect byte repeated | |
2797 | * over the entire buffer. Doing just one throw away read | |
2798 | * initially seems to "solve" it. | |
2799 | */ | |
2800 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
2801 | ||
61da5fab | 2802 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2803 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2804 | if (ret == size) | |
2805 | return ret; | |
61da5fab JB |
2806 | msleep(1); |
2807 | } | |
a4fc5ed6 | 2808 | |
9d1a1031 | 2809 | return ret; |
a4fc5ed6 KP |
2810 | } |
2811 | ||
2812 | /* | |
2813 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2814 | * link status information | |
2815 | */ | |
2816 | static bool | |
93f62dad | 2817 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2818 | { |
9d1a1031 JN |
2819 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2820 | DP_LANE0_1_STATUS, | |
2821 | link_status, | |
2822 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2823 | } |
2824 | ||
1100244e | 2825 | /* These are source-specific values. */ |
a4fc5ed6 | 2826 | static uint8_t |
1a2eb460 | 2827 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2828 | { |
30add22d | 2829 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 2830 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 2831 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2832 | |
7ad14a29 SJ |
2833 | if (INTEL_INFO(dev)->gen >= 9) { |
2834 | if (dev_priv->vbt.edp_low_vswing && port == PORT_A) | |
2835 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
5a9d1f1a | 2836 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 2837 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 2838 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2839 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2840 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2841 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 2842 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2843 | else |
bd60018a | 2844 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2845 | } |
2846 | ||
2847 | static uint8_t | |
2848 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2849 | { | |
30add22d | 2850 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2851 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2852 | |
5a9d1f1a DL |
2853 | if (INTEL_INFO(dev)->gen >= 9) { |
2854 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2855 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
2856 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2857 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2858 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2859 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2860 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
2861 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
2862 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
2863 | default: |
2864 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
2865 | } | |
2866 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 2867 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2868 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2869 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2870 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2871 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2872 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2873 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2874 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 2875 | default: |
bd60018a | 2876 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 2877 | } |
e2fa6fba P |
2878 | } else if (IS_VALLEYVIEW(dev)) { |
2879 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2880 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2881 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
2882 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2883 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2884 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2885 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2886 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 2887 | default: |
bd60018a | 2888 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 2889 | } |
bc7d38a4 | 2890 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 2891 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
2892 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2893 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2894 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2895 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2896 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 2897 | default: |
bd60018a | 2898 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
2899 | } |
2900 | } else { | |
2901 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
2902 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
2903 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2904 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
2905 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
2906 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
2907 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
2908 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 2909 | default: |
bd60018a | 2910 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 2911 | } |
a4fc5ed6 KP |
2912 | } |
2913 | } | |
2914 | ||
e2fa6fba P |
2915 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2916 | { | |
2917 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2918 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2919 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2920 | struct intel_crtc *intel_crtc = |
2921 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2922 | unsigned long demph_reg_value, preemph_reg_value, |
2923 | uniqtranscale_reg_value; | |
2924 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2925 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2926 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2927 | |
2928 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 2929 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
2930 | preemph_reg_value = 0x0004000; |
2931 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2932 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2933 | demph_reg_value = 0x2B405555; |
2934 | uniqtranscale_reg_value = 0x552AB83A; | |
2935 | break; | |
bd60018a | 2936 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2937 | demph_reg_value = 0x2B404040; |
2938 | uniqtranscale_reg_value = 0x5548B83A; | |
2939 | break; | |
bd60018a | 2940 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2941 | demph_reg_value = 0x2B245555; |
2942 | uniqtranscale_reg_value = 0x5560B83A; | |
2943 | break; | |
bd60018a | 2944 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
2945 | demph_reg_value = 0x2B405555; |
2946 | uniqtranscale_reg_value = 0x5598DA3A; | |
2947 | break; | |
2948 | default: | |
2949 | return 0; | |
2950 | } | |
2951 | break; | |
bd60018a | 2952 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
2953 | preemph_reg_value = 0x0002000; |
2954 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2955 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2956 | demph_reg_value = 0x2B404040; |
2957 | uniqtranscale_reg_value = 0x5552B83A; | |
2958 | break; | |
bd60018a | 2959 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2960 | demph_reg_value = 0x2B404848; |
2961 | uniqtranscale_reg_value = 0x5580B83A; | |
2962 | break; | |
bd60018a | 2963 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
2964 | demph_reg_value = 0x2B404040; |
2965 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2966 | break; | |
2967 | default: | |
2968 | return 0; | |
2969 | } | |
2970 | break; | |
bd60018a | 2971 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
2972 | preemph_reg_value = 0x0000000; |
2973 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2974 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2975 | demph_reg_value = 0x2B305555; |
2976 | uniqtranscale_reg_value = 0x5570B83A; | |
2977 | break; | |
bd60018a | 2978 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
2979 | demph_reg_value = 0x2B2B4040; |
2980 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2981 | break; | |
2982 | default: | |
2983 | return 0; | |
2984 | } | |
2985 | break; | |
bd60018a | 2986 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
2987 | preemph_reg_value = 0x0006000; |
2988 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 2989 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
2990 | demph_reg_value = 0x1B405555; |
2991 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2992 | break; | |
2993 | default: | |
2994 | return 0; | |
2995 | } | |
2996 | break; | |
2997 | default: | |
2998 | return 0; | |
2999 | } | |
3000 | ||
0980a60f | 3001 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
3002 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3003 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
3004 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3005 | uniqtranscale_reg_value); |
ab3c759a CML |
3006 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3007 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3008 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3009 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 3010 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
3011 | |
3012 | return 0; | |
3013 | } | |
3014 | ||
e4a1d846 CML |
3015 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
3016 | { | |
3017 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3018 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3019 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3020 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3021 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3022 | uint8_t train_set = intel_dp->train_set[0]; |
3023 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3024 | enum pipe pipe = intel_crtc->pipe; |
3025 | int i; | |
e4a1d846 CML |
3026 | |
3027 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3028 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3029 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3030 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3031 | deemph_reg_value = 128; |
3032 | margin_reg_value = 52; | |
3033 | break; | |
bd60018a | 3034 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3035 | deemph_reg_value = 128; |
3036 | margin_reg_value = 77; | |
3037 | break; | |
bd60018a | 3038 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3039 | deemph_reg_value = 128; |
3040 | margin_reg_value = 102; | |
3041 | break; | |
bd60018a | 3042 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3043 | deemph_reg_value = 128; |
3044 | margin_reg_value = 154; | |
3045 | /* FIXME extra to set for 1200 */ | |
3046 | break; | |
3047 | default: | |
3048 | return 0; | |
3049 | } | |
3050 | break; | |
bd60018a | 3051 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3052 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3053 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3054 | deemph_reg_value = 85; |
3055 | margin_reg_value = 78; | |
3056 | break; | |
bd60018a | 3057 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3058 | deemph_reg_value = 85; |
3059 | margin_reg_value = 116; | |
3060 | break; | |
bd60018a | 3061 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3062 | deemph_reg_value = 85; |
3063 | margin_reg_value = 154; | |
3064 | break; | |
3065 | default: | |
3066 | return 0; | |
3067 | } | |
3068 | break; | |
bd60018a | 3069 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3070 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3071 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3072 | deemph_reg_value = 64; |
3073 | margin_reg_value = 104; | |
3074 | break; | |
bd60018a | 3075 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3076 | deemph_reg_value = 64; |
3077 | margin_reg_value = 154; | |
3078 | break; | |
3079 | default: | |
3080 | return 0; | |
3081 | } | |
3082 | break; | |
bd60018a | 3083 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3084 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3085 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3086 | deemph_reg_value = 43; |
3087 | margin_reg_value = 154; | |
3088 | break; | |
3089 | default: | |
3090 | return 0; | |
3091 | } | |
3092 | break; | |
3093 | default: | |
3094 | return 0; | |
3095 | } | |
3096 | ||
3097 | mutex_lock(&dev_priv->dpio_lock); | |
3098 | ||
3099 | /* Clear calc init */ | |
1966e59e VS |
3100 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3101 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3102 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3103 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3104 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3105 | ||
3106 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3107 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3108 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3109 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e | 3110 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); |
e4a1d846 | 3111 | |
a02ef3c7 VS |
3112 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_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_PCS01_DW9(ch), val); | |
3116 | ||
3117 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3118 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3119 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3120 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3121 | ||
e4a1d846 | 3122 | /* Program swing deemph */ |
f72df8db VS |
3123 | for (i = 0; i < 4; i++) { |
3124 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
3125 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3126 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3127 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3128 | } | |
e4a1d846 CML |
3129 | |
3130 | /* Program swing margin */ | |
f72df8db VS |
3131 | for (i = 0; i < 4; i++) { |
3132 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
1fb44505 VS |
3133 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3134 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
f72df8db VS |
3135 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3136 | } | |
e4a1d846 CML |
3137 | |
3138 | /* Disable unique transition scale */ | |
f72df8db VS |
3139 | for (i = 0; i < 4; i++) { |
3140 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3141 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3142 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3143 | } | |
e4a1d846 CML |
3144 | |
3145 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
bd60018a | 3146 | == DP_TRAIN_PRE_EMPH_LEVEL_0) && |
e4a1d846 | 3147 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) |
bd60018a | 3148 | == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)) { |
e4a1d846 CML |
3149 | |
3150 | /* | |
3151 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3152 | * for ch1. Might be a typo in the doc. | |
3153 | * For now, for this unique transition scale selection, set bit | |
3154 | * 27 for ch0 and ch1. | |
3155 | */ | |
f72df8db VS |
3156 | for (i = 0; i < 4; i++) { |
3157 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
3158 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3159 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
3160 | } | |
e4a1d846 | 3161 | |
f72df8db VS |
3162 | for (i = 0; i < 4; i++) { |
3163 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
3164 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3165 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3166 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
3167 | } | |
e4a1d846 CML |
3168 | } |
3169 | ||
3170 | /* Start swing calculation */ | |
1966e59e VS |
3171 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3172 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3173 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3174 | ||
3175 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3176 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3177 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
3178 | |
3179 | /* LRC Bypass */ | |
3180 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
3181 | val |= DPIO_LRC_BYPASS; | |
3182 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
3183 | ||
3184 | mutex_unlock(&dev_priv->dpio_lock); | |
3185 | ||
3186 | return 0; | |
3187 | } | |
3188 | ||
a4fc5ed6 | 3189 | static void |
0301b3ac JN |
3190 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3191 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3192 | { |
3193 | uint8_t v = 0; | |
3194 | uint8_t p = 0; | |
3195 | int lane; | |
1a2eb460 KP |
3196 | uint8_t voltage_max; |
3197 | uint8_t preemph_max; | |
a4fc5ed6 | 3198 | |
33a34e4e | 3199 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3200 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3201 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3202 | |
3203 | if (this_v > v) | |
3204 | v = this_v; | |
3205 | if (this_p > p) | |
3206 | p = this_p; | |
3207 | } | |
3208 | ||
1a2eb460 | 3209 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3210 | if (v >= voltage_max) |
3211 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3212 | |
1a2eb460 KP |
3213 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3214 | if (p >= preemph_max) | |
3215 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3216 | |
3217 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3218 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3219 | } |
3220 | ||
3221 | static uint32_t | |
f0a3424e | 3222 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3223 | { |
3cf2efb1 | 3224 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3225 | |
3cf2efb1 | 3226 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3227 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3228 | default: |
3229 | signal_levels |= DP_VOLTAGE_0_4; | |
3230 | break; | |
bd60018a | 3231 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3232 | signal_levels |= DP_VOLTAGE_0_6; |
3233 | break; | |
bd60018a | 3234 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3235 | signal_levels |= DP_VOLTAGE_0_8; |
3236 | break; | |
bd60018a | 3237 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3238 | signal_levels |= DP_VOLTAGE_1_2; |
3239 | break; | |
3240 | } | |
3cf2efb1 | 3241 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3242 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3243 | default: |
3244 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3245 | break; | |
bd60018a | 3246 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3247 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3248 | break; | |
bd60018a | 3249 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3250 | signal_levels |= DP_PRE_EMPHASIS_6; |
3251 | break; | |
bd60018a | 3252 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3253 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3254 | break; | |
3255 | } | |
3256 | return signal_levels; | |
3257 | } | |
3258 | ||
e3421a18 ZW |
3259 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3260 | static uint32_t | |
3261 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
3262 | { | |
3c5a62b5 YL |
3263 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3264 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3265 | switch (signal_levels) { | |
bd60018a SJ |
3266 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3267 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3268 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3269 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3270 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3271 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3272 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3273 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3274 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3275 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3276 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3277 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3278 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3279 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3280 | default: |
3c5a62b5 YL |
3281 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3282 | "0x%x\n", signal_levels); | |
3283 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3284 | } |
3285 | } | |
3286 | ||
1a2eb460 KP |
3287 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3288 | static uint32_t | |
3289 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
3290 | { | |
3291 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3292 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3293 | switch (signal_levels) { | |
bd60018a | 3294 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3295 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3296 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3297 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3298 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3299 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3300 | ||
bd60018a | 3301 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3302 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3303 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3304 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3305 | ||
bd60018a | 3306 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3307 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3308 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3309 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3310 | ||
3311 | default: | |
3312 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3313 | "0x%x\n", signal_levels); | |
3314 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3315 | } | |
3316 | } | |
3317 | ||
d6c0d722 PZ |
3318 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
3319 | static uint32_t | |
f0a3424e | 3320 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3321 | { |
d6c0d722 PZ |
3322 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3323 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3324 | switch (signal_levels) { | |
bd60018a | 3325 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3326 | return DDI_BUF_TRANS_SELECT(0); |
bd60018a | 3327 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3328 | return DDI_BUF_TRANS_SELECT(1); |
bd60018a | 3329 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3330 | return DDI_BUF_TRANS_SELECT(2); |
bd60018a | 3331 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3: |
c5fe6a06 | 3332 | return DDI_BUF_TRANS_SELECT(3); |
a4fc5ed6 | 3333 | |
bd60018a | 3334 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3335 | return DDI_BUF_TRANS_SELECT(4); |
bd60018a | 3336 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3337 | return DDI_BUF_TRANS_SELECT(5); |
bd60018a | 3338 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
c5fe6a06 | 3339 | return DDI_BUF_TRANS_SELECT(6); |
a4fc5ed6 | 3340 | |
bd60018a | 3341 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
c5fe6a06 | 3342 | return DDI_BUF_TRANS_SELECT(7); |
bd60018a | 3343 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
c5fe6a06 | 3344 | return DDI_BUF_TRANS_SELECT(8); |
7ad14a29 SJ |
3345 | |
3346 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3347 | return DDI_BUF_TRANS_SELECT(9); | |
d6c0d722 PZ |
3348 | default: |
3349 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3350 | "0x%x\n", signal_levels); | |
c5fe6a06 | 3351 | return DDI_BUF_TRANS_SELECT(0); |
a4fc5ed6 | 3352 | } |
a4fc5ed6 KP |
3353 | } |
3354 | ||
f0a3424e PZ |
3355 | /* Properly updates "DP" with the correct signal levels. */ |
3356 | static void | |
3357 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3358 | { | |
3359 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3360 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
3361 | struct drm_device *dev = intel_dig_port->base.base.dev; |
3362 | uint32_t signal_levels, mask; | |
3363 | uint8_t train_set = intel_dp->train_set[0]; | |
3364 | ||
5a9d1f1a | 3365 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
f0a3424e PZ |
3366 | signal_levels = intel_hsw_signal_levels(train_set); |
3367 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
3368 | } else if (IS_CHERRYVIEW(dev)) { |
3369 | signal_levels = intel_chv_signal_levels(intel_dp); | |
3370 | mask = 0; | |
e2fa6fba P |
3371 | } else if (IS_VALLEYVIEW(dev)) { |
3372 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
3373 | mask = 0; | |
bc7d38a4 | 3374 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
3375 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
3376 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 3377 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
3378 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
3379 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
3380 | } else { | |
3381 | signal_levels = intel_gen4_signal_levels(train_set); | |
3382 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
3383 | } | |
3384 | ||
3385 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3386 | ||
3387 | *DP = (*DP & ~mask) | signal_levels; | |
3388 | } | |
3389 | ||
a4fc5ed6 | 3390 | static bool |
ea5b213a | 3391 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3392 | uint32_t *DP, |
58e10eb9 | 3393 | uint8_t dp_train_pat) |
a4fc5ed6 | 3394 | { |
174edf1f PZ |
3395 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3396 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 3397 | struct drm_i915_private *dev_priv = dev->dev_private; |
2cdfe6c8 JN |
3398 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3399 | int ret, len; | |
a4fc5ed6 | 3400 | |
7b13b58a | 3401 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3402 | |
70aff66c | 3403 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3404 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3405 | |
2cdfe6c8 JN |
3406 | buf[0] = dp_train_pat; |
3407 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3408 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3409 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3410 | len = 1; | |
3411 | } else { | |
3412 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
3413 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
3414 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3415 | } |
a4fc5ed6 | 3416 | |
9d1a1031 JN |
3417 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3418 | buf, len); | |
2cdfe6c8 JN |
3419 | |
3420 | return ret == len; | |
a4fc5ed6 KP |
3421 | } |
3422 | ||
70aff66c JN |
3423 | static bool |
3424 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3425 | uint8_t dp_train_pat) | |
3426 | { | |
953d22e8 | 3427 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3428 | intel_dp_set_signal_levels(intel_dp, DP); |
3429 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3430 | } | |
3431 | ||
3432 | static bool | |
3433 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3434 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3435 | { |
3436 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3437 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3438 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3439 | int ret; | |
3440 | ||
3441 | intel_get_adjust_train(intel_dp, link_status); | |
3442 | intel_dp_set_signal_levels(intel_dp, DP); | |
3443 | ||
3444 | I915_WRITE(intel_dp->output_reg, *DP); | |
3445 | POSTING_READ(intel_dp->output_reg); | |
3446 | ||
9d1a1031 JN |
3447 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3448 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3449 | |
3450 | return ret == intel_dp->lane_count; | |
3451 | } | |
3452 | ||
3ab9c637 ID |
3453 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3454 | { | |
3455 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3456 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3457 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3458 | enum port port = intel_dig_port->port; | |
3459 | uint32_t val; | |
3460 | ||
3461 | if (!HAS_DDI(dev)) | |
3462 | return; | |
3463 | ||
3464 | val = I915_READ(DP_TP_CTL(port)); | |
3465 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3466 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3467 | I915_WRITE(DP_TP_CTL(port), val); | |
3468 | ||
3469 | /* | |
3470 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3471 | * we need to set idle transmission mode is to work around a HW issue | |
3472 | * where we enable the pipe while not in idle link-training mode. | |
3473 | * In this case there is requirement to wait for a minimum number of | |
3474 | * idle patterns to be sent. | |
3475 | */ | |
3476 | if (port == PORT_A) | |
3477 | return; | |
3478 | ||
3479 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3480 | 1)) | |
3481 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3482 | } | |
3483 | ||
33a34e4e | 3484 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3485 | void |
33a34e4e | 3486 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3487 | { |
da63a9f2 | 3488 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3489 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3490 | int i; |
3491 | uint8_t voltage; | |
cdb0e95b | 3492 | int voltage_tries, loop_tries; |
ea5b213a | 3493 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3494 | uint8_t link_config[2]; |
a4fc5ed6 | 3495 | |
affa9354 | 3496 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3497 | intel_ddi_prepare_link_retrain(encoder); |
3498 | ||
3cf2efb1 | 3499 | /* Write the link configuration data */ |
6aba5b6c JN |
3500 | link_config[0] = intel_dp->link_bw; |
3501 | link_config[1] = intel_dp->lane_count; | |
3502 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3503 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3504 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
a8f3ef61 SJ |
3505 | if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) |
3506 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, | |
3507 | &intel_dp->rate_select, 1); | |
6aba5b6c JN |
3508 | |
3509 | link_config[0] = 0; | |
3510 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3511 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3512 | |
3513 | DP |= DP_PORT_EN; | |
1a2eb460 | 3514 | |
70aff66c JN |
3515 | /* clock recovery */ |
3516 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3517 | DP_TRAINING_PATTERN_1 | | |
3518 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3519 | DRM_ERROR("failed to enable link training\n"); | |
3520 | return; | |
3521 | } | |
3522 | ||
a4fc5ed6 | 3523 | voltage = 0xff; |
cdb0e95b KP |
3524 | voltage_tries = 0; |
3525 | loop_tries = 0; | |
a4fc5ed6 | 3526 | for (;;) { |
70aff66c | 3527 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3528 | |
a7c9655f | 3529 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3530 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3531 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3532 | break; |
93f62dad | 3533 | } |
a4fc5ed6 | 3534 | |
01916270 | 3535 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3536 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3537 | break; |
3538 | } | |
3539 | ||
3540 | /* Check to see if we've tried the max voltage */ | |
3541 | for (i = 0; i < intel_dp->lane_count; i++) | |
3542 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3543 | break; |
3b4f819d | 3544 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3545 | ++loop_tries; |
3546 | if (loop_tries == 5) { | |
3def84b3 | 3547 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3548 | break; |
3549 | } | |
70aff66c JN |
3550 | intel_dp_reset_link_train(intel_dp, &DP, |
3551 | DP_TRAINING_PATTERN_1 | | |
3552 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3553 | voltage_tries = 0; |
3554 | continue; | |
3555 | } | |
a4fc5ed6 | 3556 | |
3cf2efb1 | 3557 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3558 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3559 | ++voltage_tries; |
b06fbda3 | 3560 | if (voltage_tries == 5) { |
3def84b3 | 3561 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3562 | break; |
3563 | } | |
3564 | } else | |
3565 | voltage_tries = 0; | |
3566 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3567 | |
70aff66c JN |
3568 | /* Update training set as requested by target */ |
3569 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3570 | DRM_ERROR("failed to update link training\n"); | |
3571 | break; | |
3572 | } | |
a4fc5ed6 KP |
3573 | } |
3574 | ||
33a34e4e JB |
3575 | intel_dp->DP = DP; |
3576 | } | |
3577 | ||
c19b0669 | 3578 | void |
33a34e4e JB |
3579 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3580 | { | |
33a34e4e | 3581 | bool channel_eq = false; |
37f80975 | 3582 | int tries, cr_tries; |
33a34e4e | 3583 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3584 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3585 | ||
3586 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3587 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3588 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3589 | |
a4fc5ed6 | 3590 | /* channel equalization */ |
70aff66c | 3591 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3592 | training_pattern | |
70aff66c JN |
3593 | DP_LINK_SCRAMBLING_DISABLE)) { |
3594 | DRM_ERROR("failed to start channel equalization\n"); | |
3595 | return; | |
3596 | } | |
3597 | ||
a4fc5ed6 | 3598 | tries = 0; |
37f80975 | 3599 | cr_tries = 0; |
a4fc5ed6 KP |
3600 | channel_eq = false; |
3601 | for (;;) { | |
70aff66c | 3602 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3603 | |
37f80975 JB |
3604 | if (cr_tries > 5) { |
3605 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3606 | break; |
3607 | } | |
3608 | ||
a7c9655f | 3609 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3610 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3611 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3612 | break; |
70aff66c | 3613 | } |
a4fc5ed6 | 3614 | |
37f80975 | 3615 | /* Make sure clock is still ok */ |
01916270 | 3616 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3617 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3618 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3619 | training_pattern | |
70aff66c | 3620 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3621 | cr_tries++; |
3622 | continue; | |
3623 | } | |
3624 | ||
1ffdff13 | 3625 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3626 | channel_eq = true; |
3627 | break; | |
3628 | } | |
a4fc5ed6 | 3629 | |
37f80975 JB |
3630 | /* Try 5 times, then try clock recovery if that fails */ |
3631 | if (tries > 5) { | |
37f80975 | 3632 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3633 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3634 | training_pattern | |
70aff66c | 3635 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3636 | tries = 0; |
3637 | cr_tries++; | |
3638 | continue; | |
3639 | } | |
a4fc5ed6 | 3640 | |
70aff66c JN |
3641 | /* Update training set as requested by target */ |
3642 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3643 | DRM_ERROR("failed to update link training\n"); | |
3644 | break; | |
3645 | } | |
3cf2efb1 | 3646 | ++tries; |
869184a6 | 3647 | } |
3cf2efb1 | 3648 | |
3ab9c637 ID |
3649 | intel_dp_set_idle_link_train(intel_dp); |
3650 | ||
3651 | intel_dp->DP = DP; | |
3652 | ||
d6c0d722 | 3653 | if (channel_eq) |
07f42258 | 3654 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3655 | |
3ab9c637 ID |
3656 | } |
3657 | ||
3658 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3659 | { | |
70aff66c | 3660 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3661 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3662 | } |
3663 | ||
3664 | static void | |
ea5b213a | 3665 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3666 | { |
da63a9f2 | 3667 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3668 | enum port port = intel_dig_port->port; |
da63a9f2 | 3669 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3670 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3671 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3672 | |
bc76e320 | 3673 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3674 | return; |
3675 | ||
0c33d8d7 | 3676 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3677 | return; |
3678 | ||
28c97730 | 3679 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3680 | |
bc7d38a4 | 3681 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3682 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3683 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3684 | } else { |
aad3d14d VS |
3685 | if (IS_CHERRYVIEW(dev)) |
3686 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3687 | else | |
3688 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3689 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3690 | } |
fe255d00 | 3691 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3692 | |
493a7081 | 3693 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3694 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
5bddd17f EA |
3695 | /* Hardware workaround: leaving our transcoder select |
3696 | * set to transcoder B while it's off will prevent the | |
3697 | * corresponding HDMI output on transcoder A. | |
3698 | * | |
3699 | * Combine this with another hardware workaround: | |
3700 | * transcoder select bit can only be cleared while the | |
3701 | * port is enabled. | |
3702 | */ | |
3703 | DP &= ~DP_PIPEB_SELECT; | |
3704 | I915_WRITE(intel_dp->output_reg, DP); | |
0ca09685 | 3705 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3706 | } |
3707 | ||
832afda6 | 3708 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3709 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3710 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3711 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3712 | } |
3713 | ||
26d61aad KP |
3714 | static bool |
3715 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3716 | { |
a031d709 RV |
3717 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3718 | struct drm_device *dev = dig_port->base.base.dev; | |
3719 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3720 | uint8_t rev; |
a031d709 | 3721 | |
9d1a1031 JN |
3722 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3723 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3724 | return false; /* aux transfer failed */ |
92fd8fd1 | 3725 | |
a8e98153 | 3726 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3727 | |
edb39244 AJ |
3728 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3729 | return false; /* DPCD not present */ | |
3730 | ||
2293bb5c SK |
3731 | /* Check if the panel supports PSR */ |
3732 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3733 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3734 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3735 | intel_dp->psr_dpcd, | |
3736 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3737 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3738 | dev_priv->psr.sink_support = true; | |
50003939 | 3739 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3740 | } |
50003939 JN |
3741 | } |
3742 | ||
7809a611 | 3743 | /* Training Pattern 3 support, both source and sink */ |
06ea66b6 | 3744 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && |
7809a611 JN |
3745 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED && |
3746 | (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)) { | |
06ea66b6 | 3747 | intel_dp->use_tps3 = true; |
f8d8a672 | 3748 | DRM_DEBUG_KMS("Displayport TPS3 supported\n"); |
06ea66b6 TP |
3749 | } else |
3750 | intel_dp->use_tps3 = false; | |
3751 | ||
fc0f8e25 SJ |
3752 | /* Intermediate frequency support */ |
3753 | if (is_edp(intel_dp) && | |
3754 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3755 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
3756 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
3757 | intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3758 | DP_SUPPORTED_LINK_RATES, | |
3759 | intel_dp->supported_rates, | |
3760 | sizeof(intel_dp->supported_rates)); | |
3761 | } | |
edb39244 AJ |
3762 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3763 | DP_DWN_STRM_PORT_PRESENT)) | |
3764 | return true; /* native DP sink */ | |
3765 | ||
3766 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3767 | return true; /* no per-port downstream info */ | |
3768 | ||
9d1a1031 JN |
3769 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3770 | intel_dp->downstream_ports, | |
3771 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3772 | return false; /* downstream port status fetch failed */ |
3773 | ||
3774 | return true; | |
92fd8fd1 KP |
3775 | } |
3776 | ||
0d198328 AJ |
3777 | static void |
3778 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3779 | { | |
3780 | u8 buf[3]; | |
3781 | ||
3782 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3783 | return; | |
3784 | ||
9d1a1031 | 3785 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3786 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3787 | buf[0], buf[1], buf[2]); | |
3788 | ||
9d1a1031 | 3789 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3790 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3791 | buf[0], buf[1], buf[2]); | |
3792 | } | |
3793 | ||
0e32b39c DA |
3794 | static bool |
3795 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3796 | { | |
3797 | u8 buf[1]; | |
3798 | ||
3799 | if (!intel_dp->can_mst) | |
3800 | return false; | |
3801 | ||
3802 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3803 | return false; | |
3804 | ||
0e32b39c DA |
3805 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
3806 | if (buf[0] & DP_MST_CAP) { | |
3807 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3808 | intel_dp->is_mst = true; | |
3809 | } else { | |
3810 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3811 | intel_dp->is_mst = false; | |
3812 | } | |
3813 | } | |
0e32b39c DA |
3814 | |
3815 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3816 | return intel_dp->is_mst; | |
3817 | } | |
3818 | ||
d2e216d0 RV |
3819 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3820 | { | |
3821 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3822 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3823 | struct intel_crtc *intel_crtc = | |
3824 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ad9dc91b RV |
3825 | u8 buf; |
3826 | int test_crc_count; | |
3827 | int attempts = 6; | |
d2e216d0 | 3828 | |
ad9dc91b | 3829 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3830 | return -EIO; |
d2e216d0 | 3831 | |
ad9dc91b | 3832 | if (!(buf & DP_TEST_CRC_SUPPORTED)) |
d2e216d0 RV |
3833 | return -ENOTTY; |
3834 | ||
1dda5f93 RV |
3835 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3836 | return -EIO; | |
3837 | ||
9d1a1031 | 3838 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
ce31d9f4 | 3839 | buf | DP_TEST_SINK_START) < 0) |
bda0381e | 3840 | return -EIO; |
d2e216d0 | 3841 | |
1dda5f93 | 3842 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
bda0381e | 3843 | return -EIO; |
ad9dc91b | 3844 | test_crc_count = buf & DP_TEST_COUNT_MASK; |
d2e216d0 | 3845 | |
ad9dc91b | 3846 | do { |
1dda5f93 RV |
3847 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
3848 | DP_TEST_SINK_MISC, &buf) < 0) | |
3849 | return -EIO; | |
ad9dc91b RV |
3850 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
3851 | } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count); | |
3852 | ||
3853 | if (attempts == 0) { | |
90bd1f46 DV |
3854 | DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n"); |
3855 | return -ETIMEDOUT; | |
ad9dc91b | 3856 | } |
d2e216d0 | 3857 | |
9d1a1031 | 3858 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
bda0381e | 3859 | return -EIO; |
d2e216d0 | 3860 | |
1dda5f93 RV |
3861 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
3862 | return -EIO; | |
3863 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, | |
3864 | buf & ~DP_TEST_SINK_START) < 0) | |
3865 | return -EIO; | |
ce31d9f4 | 3866 | |
d2e216d0 RV |
3867 | return 0; |
3868 | } | |
3869 | ||
a60f0e38 JB |
3870 | static bool |
3871 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3872 | { | |
9d1a1031 JN |
3873 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3874 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3875 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3876 | } |
3877 | ||
0e32b39c DA |
3878 | static bool |
3879 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3880 | { | |
3881 | int ret; | |
3882 | ||
3883 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3884 | DP_SINK_COUNT_ESI, | |
3885 | sink_irq_vector, 14); | |
3886 | if (ret != 14) | |
3887 | return false; | |
3888 | ||
3889 | return true; | |
3890 | } | |
3891 | ||
a60f0e38 JB |
3892 | static void |
3893 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3894 | { | |
3895 | /* NAK by default */ | |
9d1a1031 | 3896 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3897 | } |
3898 | ||
0e32b39c DA |
3899 | static int |
3900 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3901 | { | |
3902 | bool bret; | |
3903 | ||
3904 | if (intel_dp->is_mst) { | |
3905 | u8 esi[16] = { 0 }; | |
3906 | int ret = 0; | |
3907 | int retry; | |
3908 | bool handled; | |
3909 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3910 | go_again: | |
3911 | if (bret == true) { | |
3912 | ||
3913 | /* check link status - esi[10] = 0x200c */ | |
3914 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3915 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3916 | intel_dp_start_link_train(intel_dp); | |
3917 | intel_dp_complete_link_train(intel_dp); | |
3918 | intel_dp_stop_link_train(intel_dp); | |
3919 | } | |
3920 | ||
6f34cc39 | 3921 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
3922 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
3923 | ||
3924 | if (handled) { | |
3925 | for (retry = 0; retry < 3; retry++) { | |
3926 | int wret; | |
3927 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3928 | DP_SINK_COUNT_ESI+1, | |
3929 | &esi[1], 3); | |
3930 | if (wret == 3) { | |
3931 | break; | |
3932 | } | |
3933 | } | |
3934 | ||
3935 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3936 | if (bret == true) { | |
6f34cc39 | 3937 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
3938 | goto go_again; |
3939 | } | |
3940 | } else | |
3941 | ret = 0; | |
3942 | ||
3943 | return ret; | |
3944 | } else { | |
3945 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3946 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3947 | intel_dp->is_mst = false; | |
3948 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3949 | /* send a hotplug event */ | |
3950 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3951 | } | |
3952 | } | |
3953 | return -EINVAL; | |
3954 | } | |
3955 | ||
a4fc5ed6 KP |
3956 | /* |
3957 | * According to DP spec | |
3958 | * 5.1.2: | |
3959 | * 1. Read DPCD | |
3960 | * 2. Configure link according to Receiver Capabilities | |
3961 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3962 | * 4. Check link status on receipt of hot-plug interrupt | |
3963 | */ | |
a5146200 | 3964 | static void |
ea5b213a | 3965 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3966 | { |
5b215bcf | 3967 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 3968 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3969 | u8 sink_irq_vector; |
93f62dad | 3970 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3971 | |
5b215bcf DA |
3972 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
3973 | ||
da63a9f2 | 3974 | if (!intel_encoder->connectors_active) |
d2b996ac | 3975 | return; |
59cd09e1 | 3976 | |
da63a9f2 | 3977 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3978 | return; |
3979 | ||
1a125d8a ID |
3980 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
3981 | return; | |
3982 | ||
92fd8fd1 | 3983 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3984 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3985 | return; |
3986 | } | |
3987 | ||
92fd8fd1 | 3988 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3989 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3990 | return; |
3991 | } | |
3992 | ||
a60f0e38 JB |
3993 | /* Try to read the source of the interrupt */ |
3994 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
3995 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
3996 | /* Clear interrupt source */ | |
9d1a1031 JN |
3997 | drm_dp_dpcd_writeb(&intel_dp->aux, |
3998 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3999 | sink_irq_vector); | |
a60f0e38 JB |
4000 | |
4001 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4002 | intel_dp_handle_test_request(intel_dp); | |
4003 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4004 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4005 | } | |
4006 | ||
1ffdff13 | 4007 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4008 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4009 | intel_encoder->base.name); |
33a34e4e JB |
4010 | intel_dp_start_link_train(intel_dp); |
4011 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 4012 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4013 | } |
a4fc5ed6 | 4014 | } |
a4fc5ed6 | 4015 | |
caf9ab24 | 4016 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4017 | static enum drm_connector_status |
26d61aad | 4018 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4019 | { |
caf9ab24 | 4020 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4021 | uint8_t type; |
4022 | ||
4023 | if (!intel_dp_get_dpcd(intel_dp)) | |
4024 | return connector_status_disconnected; | |
4025 | ||
4026 | /* if there's no downstream port, we're done */ | |
4027 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4028 | return connector_status_connected; |
caf9ab24 AJ |
4029 | |
4030 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4031 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4032 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4033 | uint8_t reg; |
9d1a1031 JN |
4034 | |
4035 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4036 | ®, 1) < 0) | |
caf9ab24 | 4037 | return connector_status_unknown; |
9d1a1031 | 4038 | |
23235177 AJ |
4039 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4040 | : connector_status_disconnected; | |
caf9ab24 AJ |
4041 | } |
4042 | ||
4043 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4044 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4045 | return connector_status_connected; |
caf9ab24 AJ |
4046 | |
4047 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4048 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4049 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4050 | if (type == DP_DS_PORT_TYPE_VGA || | |
4051 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4052 | return connector_status_unknown; | |
4053 | } else { | |
4054 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4055 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4056 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4057 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4058 | return connector_status_unknown; | |
4059 | } | |
caf9ab24 AJ |
4060 | |
4061 | /* Anything else is out of spec, warn and ignore */ | |
4062 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4063 | return connector_status_disconnected; |
71ba9000 AJ |
4064 | } |
4065 | ||
d410b56d CW |
4066 | static enum drm_connector_status |
4067 | edp_detect(struct intel_dp *intel_dp) | |
4068 | { | |
4069 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4070 | enum drm_connector_status status; | |
4071 | ||
4072 | status = intel_panel_detect(dev); | |
4073 | if (status == connector_status_unknown) | |
4074 | status = connector_status_connected; | |
4075 | ||
4076 | return status; | |
4077 | } | |
4078 | ||
5eb08b69 | 4079 | static enum drm_connector_status |
a9756bb5 | 4080 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 4081 | { |
30add22d | 4082 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
4083 | struct drm_i915_private *dev_priv = dev->dev_private; |
4084 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
01cb9ea6 | 4085 | |
1b469639 DL |
4086 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
4087 | return connector_status_disconnected; | |
4088 | ||
26d61aad | 4089 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
4090 | } |
4091 | ||
2a592bec DA |
4092 | static int g4x_digital_port_connected(struct drm_device *dev, |
4093 | struct intel_digital_port *intel_dig_port) | |
a4fc5ed6 | 4094 | { |
a4fc5ed6 | 4095 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 4096 | uint32_t bit; |
5eb08b69 | 4097 | |
232a6ee9 TP |
4098 | if (IS_VALLEYVIEW(dev)) { |
4099 | switch (intel_dig_port->port) { | |
4100 | case PORT_B: | |
4101 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4102 | break; | |
4103 | case PORT_C: | |
4104 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4105 | break; | |
4106 | case PORT_D: | |
4107 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4108 | break; | |
4109 | default: | |
2a592bec | 4110 | return -EINVAL; |
232a6ee9 TP |
4111 | } |
4112 | } else { | |
4113 | switch (intel_dig_port->port) { | |
4114 | case PORT_B: | |
4115 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4116 | break; | |
4117 | case PORT_C: | |
4118 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4119 | break; | |
4120 | case PORT_D: | |
4121 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4122 | break; | |
4123 | default: | |
2a592bec | 4124 | return -EINVAL; |
232a6ee9 | 4125 | } |
a4fc5ed6 KP |
4126 | } |
4127 | ||
10f76a38 | 4128 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
2a592bec DA |
4129 | return 0; |
4130 | return 1; | |
4131 | } | |
4132 | ||
4133 | static enum drm_connector_status | |
4134 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4135 | { | |
4136 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4137 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4138 | int ret; | |
4139 | ||
4140 | /* Can't disconnect eDP, but you can close the lid... */ | |
4141 | if (is_edp(intel_dp)) { | |
4142 | enum drm_connector_status status; | |
4143 | ||
4144 | status = intel_panel_detect(dev); | |
4145 | if (status == connector_status_unknown) | |
4146 | status = connector_status_connected; | |
4147 | return status; | |
4148 | } | |
4149 | ||
4150 | ret = g4x_digital_port_connected(dev, intel_dig_port); | |
4151 | if (ret == -EINVAL) | |
4152 | return connector_status_unknown; | |
4153 | else if (ret == 0) | |
a4fc5ed6 KP |
4154 | return connector_status_disconnected; |
4155 | ||
26d61aad | 4156 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4157 | } |
4158 | ||
8c241fef | 4159 | static struct edid * |
beb60608 | 4160 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4161 | { |
beb60608 | 4162 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4163 | |
9cd300e0 JN |
4164 | /* use cached edid if we have one */ |
4165 | if (intel_connector->edid) { | |
9cd300e0 JN |
4166 | /* invalid edid */ |
4167 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4168 | return NULL; |
4169 | ||
55e9edeb | 4170 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4171 | } else |
4172 | return drm_get_edid(&intel_connector->base, | |
4173 | &intel_dp->aux.ddc); | |
4174 | } | |
8c241fef | 4175 | |
beb60608 CW |
4176 | static void |
4177 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4178 | { | |
4179 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4180 | struct edid *edid; | |
8c241fef | 4181 | |
beb60608 CW |
4182 | edid = intel_dp_get_edid(intel_dp); |
4183 | intel_connector->detect_edid = edid; | |
4184 | ||
4185 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4186 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4187 | else | |
4188 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4189 | } |
4190 | ||
beb60608 CW |
4191 | static void |
4192 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4193 | { |
beb60608 | 4194 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4195 | |
beb60608 CW |
4196 | kfree(intel_connector->detect_edid); |
4197 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4198 | |
beb60608 CW |
4199 | intel_dp->has_audio = false; |
4200 | } | |
d6f24d0f | 4201 | |
beb60608 CW |
4202 | static enum intel_display_power_domain |
4203 | intel_dp_power_get(struct intel_dp *dp) | |
4204 | { | |
4205 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4206 | enum intel_display_power_domain power_domain; | |
4207 | ||
4208 | power_domain = intel_display_port_power_domain(encoder); | |
4209 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4210 | ||
4211 | return power_domain; | |
4212 | } | |
d6f24d0f | 4213 | |
beb60608 CW |
4214 | static void |
4215 | intel_dp_power_put(struct intel_dp *dp, | |
4216 | enum intel_display_power_domain power_domain) | |
4217 | { | |
4218 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4219 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4220 | } |
4221 | ||
a9756bb5 ZW |
4222 | static enum drm_connector_status |
4223 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4224 | { | |
4225 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4226 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4227 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4228 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4229 | enum drm_connector_status status; |
671dedd2 | 4230 | enum intel_display_power_domain power_domain; |
0e32b39c | 4231 | bool ret; |
a9756bb5 | 4232 | |
164c8598 | 4233 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4234 | connector->base.id, connector->name); |
beb60608 | 4235 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4236 | |
0e32b39c DA |
4237 | if (intel_dp->is_mst) { |
4238 | /* MST devices are disconnected from a monitor POV */ | |
4239 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4240 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4241 | return connector_status_disconnected; |
0e32b39c DA |
4242 | } |
4243 | ||
beb60608 | 4244 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4245 | |
d410b56d CW |
4246 | /* Can't disconnect eDP, but you can close the lid... */ |
4247 | if (is_edp(intel_dp)) | |
4248 | status = edp_detect(intel_dp); | |
4249 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4250 | status = ironlake_dp_detect(intel_dp); |
4251 | else | |
4252 | status = g4x_dp_detect(intel_dp); | |
4253 | if (status != connector_status_connected) | |
c8c8fb33 | 4254 | goto out; |
a9756bb5 | 4255 | |
0d198328 AJ |
4256 | intel_dp_probe_oui(intel_dp); |
4257 | ||
0e32b39c DA |
4258 | ret = intel_dp_probe_mst(intel_dp); |
4259 | if (ret) { | |
4260 | /* if we are in MST mode then this connector | |
4261 | won't appear connected or have anything with EDID on it */ | |
4262 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4263 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4264 | status = connector_status_disconnected; | |
4265 | goto out; | |
4266 | } | |
4267 | ||
beb60608 | 4268 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4269 | |
d63885da PZ |
4270 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4271 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4272 | status = connector_status_connected; |
4273 | ||
4274 | out: | |
beb60608 | 4275 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4276 | return status; |
a4fc5ed6 KP |
4277 | } |
4278 | ||
beb60608 CW |
4279 | static void |
4280 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4281 | { |
df0e9248 | 4282 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4283 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4284 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4285 | |
beb60608 CW |
4286 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4287 | connector->base.id, connector->name); | |
4288 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4289 | |
beb60608 CW |
4290 | if (connector->status != connector_status_connected) |
4291 | return; | |
671dedd2 | 4292 | |
beb60608 CW |
4293 | power_domain = intel_dp_power_get(intel_dp); |
4294 | ||
4295 | intel_dp_set_edid(intel_dp); | |
4296 | ||
4297 | intel_dp_power_put(intel_dp, power_domain); | |
4298 | ||
4299 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4300 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4301 | } | |
4302 | ||
4303 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4304 | { | |
4305 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4306 | struct edid *edid; | |
4307 | ||
4308 | edid = intel_connector->detect_edid; | |
4309 | if (edid) { | |
4310 | int ret = intel_connector_update_modes(connector, edid); | |
4311 | if (ret) | |
4312 | return ret; | |
4313 | } | |
32f9d658 | 4314 | |
f8779fda | 4315 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4316 | if (is_edp(intel_attached_dp(connector)) && |
4317 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4318 | struct drm_display_mode *mode; |
beb60608 CW |
4319 | |
4320 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4321 | intel_connector->panel.fixed_mode); |
f8779fda | 4322 | if (mode) { |
32f9d658 ZW |
4323 | drm_mode_probed_add(connector, mode); |
4324 | return 1; | |
4325 | } | |
4326 | } | |
beb60608 | 4327 | |
32f9d658 | 4328 | return 0; |
a4fc5ed6 KP |
4329 | } |
4330 | ||
1aad7ac0 CW |
4331 | static bool |
4332 | intel_dp_detect_audio(struct drm_connector *connector) | |
4333 | { | |
1aad7ac0 | 4334 | bool has_audio = false; |
beb60608 | 4335 | struct edid *edid; |
1aad7ac0 | 4336 | |
beb60608 CW |
4337 | edid = to_intel_connector(connector)->detect_edid; |
4338 | if (edid) | |
1aad7ac0 | 4339 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4340 | |
1aad7ac0 CW |
4341 | return has_audio; |
4342 | } | |
4343 | ||
f684960e CW |
4344 | static int |
4345 | intel_dp_set_property(struct drm_connector *connector, | |
4346 | struct drm_property *property, | |
4347 | uint64_t val) | |
4348 | { | |
e953fd7b | 4349 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4350 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4351 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4352 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4353 | int ret; |
4354 | ||
662595df | 4355 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4356 | if (ret) |
4357 | return ret; | |
4358 | ||
3f43c48d | 4359 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4360 | int i = val; |
4361 | bool has_audio; | |
4362 | ||
4363 | if (i == intel_dp->force_audio) | |
f684960e CW |
4364 | return 0; |
4365 | ||
1aad7ac0 | 4366 | intel_dp->force_audio = i; |
f684960e | 4367 | |
c3e5f67b | 4368 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4369 | has_audio = intel_dp_detect_audio(connector); |
4370 | else | |
c3e5f67b | 4371 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4372 | |
4373 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4374 | return 0; |
4375 | ||
1aad7ac0 | 4376 | intel_dp->has_audio = has_audio; |
f684960e CW |
4377 | goto done; |
4378 | } | |
4379 | ||
e953fd7b | 4380 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
4381 | bool old_auto = intel_dp->color_range_auto; |
4382 | uint32_t old_range = intel_dp->color_range; | |
4383 | ||
55bc60db VS |
4384 | switch (val) { |
4385 | case INTEL_BROADCAST_RGB_AUTO: | |
4386 | intel_dp->color_range_auto = true; | |
4387 | break; | |
4388 | case INTEL_BROADCAST_RGB_FULL: | |
4389 | intel_dp->color_range_auto = false; | |
4390 | intel_dp->color_range = 0; | |
4391 | break; | |
4392 | case INTEL_BROADCAST_RGB_LIMITED: | |
4393 | intel_dp->color_range_auto = false; | |
4394 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
4395 | break; | |
4396 | default: | |
4397 | return -EINVAL; | |
4398 | } | |
ae4edb80 DV |
4399 | |
4400 | if (old_auto == intel_dp->color_range_auto && | |
4401 | old_range == intel_dp->color_range) | |
4402 | return 0; | |
4403 | ||
e953fd7b CW |
4404 | goto done; |
4405 | } | |
4406 | ||
53b41837 YN |
4407 | if (is_edp(intel_dp) && |
4408 | property == connector->dev->mode_config.scaling_mode_property) { | |
4409 | if (val == DRM_MODE_SCALE_NONE) { | |
4410 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4411 | return -EINVAL; | |
4412 | } | |
4413 | ||
4414 | if (intel_connector->panel.fitting_mode == val) { | |
4415 | /* the eDP scaling property is not changed */ | |
4416 | return 0; | |
4417 | } | |
4418 | intel_connector->panel.fitting_mode = val; | |
4419 | ||
4420 | goto done; | |
4421 | } | |
4422 | ||
f684960e CW |
4423 | return -EINVAL; |
4424 | ||
4425 | done: | |
c0c36b94 CW |
4426 | if (intel_encoder->base.crtc) |
4427 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4428 | |
4429 | return 0; | |
4430 | } | |
4431 | ||
a4fc5ed6 | 4432 | static void |
73845adf | 4433 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4434 | { |
1d508706 | 4435 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4436 | |
10e972d3 | 4437 | kfree(intel_connector->detect_edid); |
beb60608 | 4438 | |
9cd300e0 JN |
4439 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4440 | kfree(intel_connector->edid); | |
4441 | ||
acd8db10 PZ |
4442 | /* Can't call is_edp() since the encoder may have been destroyed |
4443 | * already. */ | |
4444 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4445 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4446 | |
a4fc5ed6 | 4447 | drm_connector_cleanup(connector); |
55f78c43 | 4448 | kfree(connector); |
a4fc5ed6 KP |
4449 | } |
4450 | ||
00c09d70 | 4451 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4452 | { |
da63a9f2 PZ |
4453 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4454 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4455 | |
4f71d0cb | 4456 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 4457 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4458 | if (is_edp(intel_dp)) { |
4459 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4460 | /* |
4461 | * vdd might still be enabled do to the delayed vdd off. | |
4462 | * Make sure vdd is actually turned off here. | |
4463 | */ | |
773538e8 | 4464 | pps_lock(intel_dp); |
4be73780 | 4465 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4466 | pps_unlock(intel_dp); |
4467 | ||
01527b31 CT |
4468 | if (intel_dp->edp_notifier.notifier_call) { |
4469 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4470 | intel_dp->edp_notifier.notifier_call = NULL; | |
4471 | } | |
bd943159 | 4472 | } |
c8bd0e49 | 4473 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4474 | kfree(intel_dig_port); |
24d05927 DV |
4475 | } |
4476 | ||
07f9cd0b ID |
4477 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
4478 | { | |
4479 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4480 | ||
4481 | if (!is_edp(intel_dp)) | |
4482 | return; | |
4483 | ||
951468f3 VS |
4484 | /* |
4485 | * vdd might still be enabled do to the delayed vdd off. | |
4486 | * Make sure vdd is actually turned off here. | |
4487 | */ | |
afa4e53a | 4488 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4489 | pps_lock(intel_dp); |
07f9cd0b | 4490 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4491 | pps_unlock(intel_dp); |
07f9cd0b ID |
4492 | } |
4493 | ||
49e6bc51 VS |
4494 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4495 | { | |
4496 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4497 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4498 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4499 | enum intel_display_power_domain power_domain; | |
4500 | ||
4501 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4502 | ||
4503 | if (!edp_have_panel_vdd(intel_dp)) | |
4504 | return; | |
4505 | ||
4506 | /* | |
4507 | * The VDD bit needs a power domain reference, so if the bit is | |
4508 | * already enabled when we boot or resume, grab this reference and | |
4509 | * schedule a vdd off, so we don't hold on to the reference | |
4510 | * indefinitely. | |
4511 | */ | |
4512 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4513 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
4514 | intel_display_power_get(dev_priv, power_domain); | |
4515 | ||
4516 | edp_panel_vdd_schedule_off(intel_dp); | |
4517 | } | |
4518 | ||
6d93c0c4 ID |
4519 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4520 | { | |
49e6bc51 VS |
4521 | struct intel_dp *intel_dp; |
4522 | ||
4523 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
4524 | return; | |
4525 | ||
4526 | intel_dp = enc_to_intel_dp(encoder); | |
4527 | ||
4528 | pps_lock(intel_dp); | |
4529 | ||
4530 | /* | |
4531 | * Read out the current power sequencer assignment, | |
4532 | * in case the BIOS did something with it. | |
4533 | */ | |
4534 | if (IS_VALLEYVIEW(encoder->dev)) | |
4535 | vlv_initial_power_sequencer_setup(intel_dp); | |
4536 | ||
4537 | intel_edp_panel_vdd_sanitize(intel_dp); | |
4538 | ||
4539 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4540 | } |
4541 | ||
a4fc5ed6 | 4542 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4543 | .dpms = intel_connector_dpms, |
a4fc5ed6 | 4544 | .detect = intel_dp_detect, |
beb60608 | 4545 | .force = intel_dp_force, |
a4fc5ed6 | 4546 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4547 | .set_property = intel_dp_set_property, |
2545e4a6 | 4548 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 4549 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4550 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
a4fc5ed6 KP |
4551 | }; |
4552 | ||
4553 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4554 | .get_modes = intel_dp_get_modes, | |
4555 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4556 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4557 | }; |
4558 | ||
a4fc5ed6 | 4559 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4560 | .reset = intel_dp_encoder_reset, |
24d05927 | 4561 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4562 | }; |
4563 | ||
0e32b39c | 4564 | void |
21d40d37 | 4565 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4566 | { |
0e32b39c | 4567 | return; |
c8110e52 | 4568 | } |
6207937d | 4569 | |
b2c5c181 | 4570 | enum irqreturn |
13cf5504 DA |
4571 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4572 | { | |
4573 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4574 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
4575 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4576 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 4577 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4578 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4579 | |
0e32b39c DA |
4580 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
4581 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4582 | |
7a7f84cc VS |
4583 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4584 | /* | |
4585 | * vdd off can generate a long pulse on eDP which | |
4586 | * would require vdd on to handle it, and thus we | |
4587 | * would end up in an endless cycle of | |
4588 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4589 | */ | |
4590 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4591 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4592 | return IRQ_HANDLED; |
7a7f84cc VS |
4593 | } |
4594 | ||
26fbb774 VS |
4595 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4596 | port_name(intel_dig_port->port), | |
0e32b39c | 4597 | long_hpd ? "long" : "short"); |
13cf5504 | 4598 | |
1c767b33 ID |
4599 | power_domain = intel_display_port_power_domain(intel_encoder); |
4600 | intel_display_power_get(dev_priv, power_domain); | |
4601 | ||
0e32b39c | 4602 | if (long_hpd) { |
2a592bec DA |
4603 | |
4604 | if (HAS_PCH_SPLIT(dev)) { | |
4605 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4606 | goto mst_fail; | |
4607 | } else { | |
4608 | if (g4x_digital_port_connected(dev, intel_dig_port) != 1) | |
4609 | goto mst_fail; | |
4610 | } | |
0e32b39c DA |
4611 | |
4612 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4613 | goto mst_fail; | |
4614 | } | |
4615 | ||
4616 | intel_dp_probe_oui(intel_dp); | |
4617 | ||
4618 | if (!intel_dp_probe_mst(intel_dp)) | |
4619 | goto mst_fail; | |
4620 | ||
4621 | } else { | |
4622 | if (intel_dp->is_mst) { | |
1c767b33 | 4623 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
4624 | goto mst_fail; |
4625 | } | |
4626 | ||
4627 | if (!intel_dp->is_mst) { | |
4628 | /* | |
4629 | * we'll check the link status via the normal hot plug path later - | |
4630 | * but for short hpds we should check it now | |
4631 | */ | |
5b215bcf | 4632 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 4633 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 4634 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
4635 | } |
4636 | } | |
b2c5c181 DV |
4637 | |
4638 | ret = IRQ_HANDLED; | |
4639 | ||
1c767b33 | 4640 | goto put_power; |
0e32b39c DA |
4641 | mst_fail: |
4642 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4643 | if (intel_dp->is_mst) { | |
4644 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4645 | intel_dp->is_mst = false; | |
4646 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4647 | } | |
1c767b33 ID |
4648 | put_power: |
4649 | intel_display_power_put(dev_priv, power_domain); | |
4650 | ||
4651 | return ret; | |
13cf5504 DA |
4652 | } |
4653 | ||
e3421a18 ZW |
4654 | /* Return which DP Port should be selected for Transcoder DP control */ |
4655 | int | |
0206e353 | 4656 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4657 | { |
4658 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4659 | struct intel_encoder *intel_encoder; |
4660 | struct intel_dp *intel_dp; | |
e3421a18 | 4661 | |
fa90ecef PZ |
4662 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4663 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4664 | |
fa90ecef PZ |
4665 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4666 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4667 | return intel_dp->output_reg; |
e3421a18 | 4668 | } |
ea5b213a | 4669 | |
e3421a18 ZW |
4670 | return -1; |
4671 | } | |
4672 | ||
36e83a18 | 4673 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4674 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4675 | { |
4676 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4677 | union child_device_config *p_child; |
36e83a18 | 4678 | int i; |
5d8a7752 VS |
4679 | static const short port_mapping[] = { |
4680 | [PORT_B] = PORT_IDPB, | |
4681 | [PORT_C] = PORT_IDPC, | |
4682 | [PORT_D] = PORT_IDPD, | |
4683 | }; | |
36e83a18 | 4684 | |
3b32a35b VS |
4685 | if (port == PORT_A) |
4686 | return true; | |
4687 | ||
41aa3448 | 4688 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4689 | return false; |
4690 | ||
41aa3448 RV |
4691 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4692 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4693 | |
5d8a7752 | 4694 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4695 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4696 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4697 | return true; |
4698 | } | |
4699 | return false; | |
4700 | } | |
4701 | ||
0e32b39c | 4702 | void |
f684960e CW |
4703 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4704 | { | |
53b41837 YN |
4705 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4706 | ||
3f43c48d | 4707 | intel_attach_force_audio_property(connector); |
e953fd7b | 4708 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4709 | intel_dp->color_range_auto = true; |
53b41837 YN |
4710 | |
4711 | if (is_edp(intel_dp)) { | |
4712 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4713 | drm_object_attach_property( |
4714 | &connector->base, | |
53b41837 | 4715 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4716 | DRM_MODE_SCALE_ASPECT); |
4717 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4718 | } |
f684960e CW |
4719 | } |
4720 | ||
dada1a9f ID |
4721 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4722 | { | |
4723 | intel_dp->last_power_cycle = jiffies; | |
4724 | intel_dp->last_power_on = jiffies; | |
4725 | intel_dp->last_backlight_off = jiffies; | |
4726 | } | |
4727 | ||
67a54566 DV |
4728 | static void |
4729 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 4730 | struct intel_dp *intel_dp) |
67a54566 DV |
4731 | { |
4732 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
4733 | struct edp_power_seq cur, vbt, spec, |
4734 | *final = &intel_dp->pps_delays; | |
67a54566 | 4735 | u32 pp_on, pp_off, pp_div, pp; |
bf13e81b | 4736 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 | 4737 | |
e39b999a VS |
4738 | lockdep_assert_held(&dev_priv->pps_mutex); |
4739 | ||
81ddbc69 VS |
4740 | /* already initialized? */ |
4741 | if (final->t11_t12 != 0) | |
4742 | return; | |
4743 | ||
453c5420 | 4744 | if (HAS_PCH_SPLIT(dev)) { |
bf13e81b | 4745 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4746 | pp_on_reg = PCH_PP_ON_DELAYS; |
4747 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4748 | pp_div_reg = PCH_PP_DIVISOR; | |
4749 | } else { | |
bf13e81b JN |
4750 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4751 | ||
4752 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4753 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4754 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4755 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4756 | } |
67a54566 DV |
4757 | |
4758 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4759 | * the very first thing. */ | |
453c5420 | 4760 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4761 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4762 | |
453c5420 JB |
4763 | pp_on = I915_READ(pp_on_reg); |
4764 | pp_off = I915_READ(pp_off_reg); | |
4765 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4766 | |
4767 | /* Pull timing values out of registers */ | |
4768 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4769 | PANEL_POWER_UP_DELAY_SHIFT; | |
4770 | ||
4771 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4772 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4773 | ||
4774 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4775 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4776 | ||
4777 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4778 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4779 | ||
4780 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4781 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4782 | ||
4783 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4784 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4785 | ||
41aa3448 | 4786 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4787 | |
4788 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4789 | * our hw here, which are all in 100usec. */ | |
4790 | spec.t1_t3 = 210 * 10; | |
4791 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4792 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4793 | spec.t10 = 500 * 10; | |
4794 | /* This one is special and actually in units of 100ms, but zero | |
4795 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4796 | * table multiplies it with 1000 to make it in units of 100usec, | |
4797 | * too. */ | |
4798 | spec.t11_t12 = (510 + 100) * 10; | |
4799 | ||
4800 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4801 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4802 | ||
4803 | /* Use the max of the register settings and vbt. If both are | |
4804 | * unset, fall back to the spec limits. */ | |
36b5f425 | 4805 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
4806 | spec.field : \ |
4807 | max(cur.field, vbt.field)) | |
4808 | assign_final(t1_t3); | |
4809 | assign_final(t8); | |
4810 | assign_final(t9); | |
4811 | assign_final(t10); | |
4812 | assign_final(t11_t12); | |
4813 | #undef assign_final | |
4814 | ||
36b5f425 | 4815 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
4816 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
4817 | intel_dp->backlight_on_delay = get_delay(t8); | |
4818 | intel_dp->backlight_off_delay = get_delay(t9); | |
4819 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4820 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4821 | #undef get_delay | |
4822 | ||
f30d26e4 JN |
4823 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4824 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4825 | intel_dp->panel_power_cycle_delay); | |
4826 | ||
4827 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4828 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
4829 | } |
4830 | ||
4831 | static void | |
4832 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 4833 | struct intel_dp *intel_dp) |
f30d26e4 JN |
4834 | { |
4835 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4836 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4837 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4838 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
ad933b56 | 4839 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 4840 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 4841 | |
e39b999a | 4842 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 JB |
4843 | |
4844 | if (HAS_PCH_SPLIT(dev)) { | |
4845 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4846 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4847 | pp_div_reg = PCH_PP_DIVISOR; | |
4848 | } else { | |
bf13e81b JN |
4849 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4850 | ||
4851 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4852 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4853 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4854 | } |
4855 | ||
b2f19d1a PZ |
4856 | /* |
4857 | * And finally store the new values in the power sequencer. The | |
4858 | * backlight delays are set to 1 because we do manual waits on them. For | |
4859 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4860 | * we'll end up waiting for the backlight off delay twice: once when we | |
4861 | * do the manual sleep, and once when we disable the panel and wait for | |
4862 | * the PP_STATUS bit to become zero. | |
4863 | */ | |
f30d26e4 | 4864 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4865 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4866 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4867 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4868 | /* Compute the divisor for the pp clock, simply match the Bspec |
4869 | * formula. */ | |
453c5420 | 4870 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4871 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4872 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4873 | ||
4874 | /* Haswell doesn't have any port selection bits for the panel | |
4875 | * power sequencer any more. */ | |
bc7d38a4 | 4876 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 4877 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 4878 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 4879 | if (port == PORT_A) |
a24c144c | 4880 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4881 | else |
a24c144c | 4882 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4883 | } |
4884 | ||
453c5420 JB |
4885 | pp_on |= port_sel; |
4886 | ||
4887 | I915_WRITE(pp_on_reg, pp_on); | |
4888 | I915_WRITE(pp_off_reg, pp_off); | |
4889 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4890 | |
67a54566 | 4891 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4892 | I915_READ(pp_on_reg), |
4893 | I915_READ(pp_off_reg), | |
4894 | I915_READ(pp_div_reg)); | |
f684960e CW |
4895 | } |
4896 | ||
b33a2815 VK |
4897 | /** |
4898 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
4899 | * @dev: DRM device | |
4900 | * @refresh_rate: RR to be programmed | |
4901 | * | |
4902 | * This function gets called when refresh rate (RR) has to be changed from | |
4903 | * one frequency to another. Switches can be between high and low RR | |
4904 | * supported by the panel or to any other RR based on media playback (in | |
4905 | * this case, RR value needs to be passed from user space). | |
4906 | * | |
4907 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
4908 | */ | |
96178eeb | 4909 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
4910 | { |
4911 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4912 | struct intel_encoder *encoder; | |
96178eeb VK |
4913 | struct intel_digital_port *dig_port = NULL; |
4914 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 4915 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 4916 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 4917 | u32 reg, val; |
96178eeb | 4918 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
4919 | |
4920 | if (refresh_rate <= 0) { | |
4921 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4922 | return; | |
4923 | } | |
4924 | ||
96178eeb VK |
4925 | if (intel_dp == NULL) { |
4926 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
4927 | return; |
4928 | } | |
4929 | ||
1fcc9d1c | 4930 | /* |
e4d59f6b RV |
4931 | * FIXME: This needs proper synchronization with psr state for some |
4932 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 4933 | */ |
439d7ac0 | 4934 | |
96178eeb VK |
4935 | dig_port = dp_to_dig_port(intel_dp); |
4936 | encoder = &dig_port->base; | |
439d7ac0 PB |
4937 | intel_crtc = encoder->new_crtc; |
4938 | ||
4939 | if (!intel_crtc) { | |
4940 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4941 | return; | |
4942 | } | |
4943 | ||
6e3c9717 | 4944 | config = intel_crtc->config; |
439d7ac0 | 4945 | |
96178eeb | 4946 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
4947 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
4948 | return; | |
4949 | } | |
4950 | ||
96178eeb VK |
4951 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
4952 | refresh_rate) | |
439d7ac0 PB |
4953 | index = DRRS_LOW_RR; |
4954 | ||
96178eeb | 4955 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
4956 | DRM_DEBUG_KMS( |
4957 | "DRRS requested for previously set RR...ignoring\n"); | |
4958 | return; | |
4959 | } | |
4960 | ||
4961 | if (!intel_crtc->active) { | |
4962 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4963 | return; | |
4964 | } | |
4965 | ||
44395bfe | 4966 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
4967 | switch (index) { |
4968 | case DRRS_HIGH_RR: | |
4969 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
4970 | break; | |
4971 | case DRRS_LOW_RR: | |
4972 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
4973 | break; | |
4974 | case DRRS_MAX_RR: | |
4975 | default: | |
4976 | DRM_ERROR("Unsupported refreshrate type\n"); | |
4977 | } | |
4978 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 4979 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 4980 | val = I915_READ(reg); |
a4c30b1d | 4981 | |
439d7ac0 | 4982 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
4983 | if (IS_VALLEYVIEW(dev)) |
4984 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
4985 | else | |
4986 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 4987 | } else { |
6fa7aec1 VK |
4988 | if (IS_VALLEYVIEW(dev)) |
4989 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
4990 | else | |
4991 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
4992 | } |
4993 | I915_WRITE(reg, val); | |
4994 | } | |
4995 | ||
4e9ac947 VK |
4996 | dev_priv->drrs.refresh_rate_type = index; |
4997 | ||
4998 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
4999 | } | |
5000 | ||
b33a2815 VK |
5001 | /** |
5002 | * intel_edp_drrs_enable - init drrs struct if supported | |
5003 | * @intel_dp: DP struct | |
5004 | * | |
5005 | * Initializes frontbuffer_bits and drrs.dp | |
5006 | */ | |
c395578e VK |
5007 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5008 | { | |
5009 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5010 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5011 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5012 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5013 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5014 | ||
5015 | if (!intel_crtc->config->has_drrs) { | |
5016 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5017 | return; | |
5018 | } | |
5019 | ||
5020 | mutex_lock(&dev_priv->drrs.mutex); | |
5021 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5022 | DRM_ERROR("DRRS already enabled\n"); | |
5023 | goto unlock; | |
5024 | } | |
5025 | ||
5026 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5027 | ||
5028 | dev_priv->drrs.dp = intel_dp; | |
5029 | ||
5030 | unlock: | |
5031 | mutex_unlock(&dev_priv->drrs.mutex); | |
5032 | } | |
5033 | ||
b33a2815 VK |
5034 | /** |
5035 | * intel_edp_drrs_disable - Disable DRRS | |
5036 | * @intel_dp: DP struct | |
5037 | * | |
5038 | */ | |
c395578e VK |
5039 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5040 | { | |
5041 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5042 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5043 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5044 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5045 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5046 | ||
5047 | if (!intel_crtc->config->has_drrs) | |
5048 | return; | |
5049 | ||
5050 | mutex_lock(&dev_priv->drrs.mutex); | |
5051 | if (!dev_priv->drrs.dp) { | |
5052 | mutex_unlock(&dev_priv->drrs.mutex); | |
5053 | return; | |
5054 | } | |
5055 | ||
5056 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5057 | intel_dp_set_drrs_state(dev_priv->dev, | |
5058 | intel_dp->attached_connector->panel. | |
5059 | fixed_mode->vrefresh); | |
5060 | ||
5061 | dev_priv->drrs.dp = NULL; | |
5062 | mutex_unlock(&dev_priv->drrs.mutex); | |
5063 | ||
5064 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5065 | } | |
5066 | ||
4e9ac947 VK |
5067 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5068 | { | |
5069 | struct drm_i915_private *dev_priv = | |
5070 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5071 | struct intel_dp *intel_dp; | |
5072 | ||
5073 | mutex_lock(&dev_priv->drrs.mutex); | |
5074 | ||
5075 | intel_dp = dev_priv->drrs.dp; | |
5076 | ||
5077 | if (!intel_dp) | |
5078 | goto unlock; | |
5079 | ||
439d7ac0 | 5080 | /* |
4e9ac947 VK |
5081 | * The delayed work can race with an invalidate hence we need to |
5082 | * recheck. | |
439d7ac0 PB |
5083 | */ |
5084 | ||
4e9ac947 VK |
5085 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5086 | goto unlock; | |
439d7ac0 | 5087 | |
4e9ac947 VK |
5088 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5089 | intel_dp_set_drrs_state(dev_priv->dev, | |
5090 | intel_dp->attached_connector->panel. | |
5091 | downclock_mode->vrefresh); | |
439d7ac0 | 5092 | |
4e9ac947 | 5093 | unlock: |
439d7ac0 | 5094 | |
4e9ac947 | 5095 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5096 | } |
5097 | ||
b33a2815 VK |
5098 | /** |
5099 | * intel_edp_drrs_invalidate - Invalidate DRRS | |
5100 | * @dev: DRM device | |
5101 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5102 | * | |
5103 | * When there is a disturbance on screen (due to cursor movement/time | |
5104 | * update etc), DRRS needs to be invalidated, i.e. need to switch to | |
5105 | * high RR. | |
5106 | * | |
5107 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5108 | */ | |
a93fad0f VK |
5109 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5110 | unsigned frontbuffer_bits) | |
5111 | { | |
5112 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5113 | struct drm_crtc *crtc; | |
5114 | enum pipe pipe; | |
5115 | ||
5116 | if (!dev_priv->drrs.dp) | |
5117 | return; | |
5118 | ||
3954e733 R |
5119 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5120 | ||
a93fad0f VK |
5121 | mutex_lock(&dev_priv->drrs.mutex); |
5122 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5123 | pipe = to_intel_crtc(crtc)->pipe; | |
5124 | ||
5125 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) { | |
a93fad0f VK |
5126 | intel_dp_set_drrs_state(dev_priv->dev, |
5127 | dev_priv->drrs.dp->attached_connector->panel. | |
5128 | fixed_mode->vrefresh); | |
5129 | } | |
5130 | ||
5131 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
5132 | ||
5133 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5134 | mutex_unlock(&dev_priv->drrs.mutex); | |
5135 | } | |
5136 | ||
b33a2815 VK |
5137 | /** |
5138 | * intel_edp_drrs_flush - Flush DRRS | |
5139 | * @dev: DRM device | |
5140 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5141 | * | |
5142 | * When there is no movement on screen, DRRS work can be scheduled. | |
5143 | * This DRRS work is responsible for setting relevant registers after a | |
5144 | * timeout of 1 second. | |
5145 | * | |
5146 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5147 | */ | |
a93fad0f VK |
5148 | void intel_edp_drrs_flush(struct drm_device *dev, |
5149 | unsigned frontbuffer_bits) | |
5150 | { | |
5151 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5152 | struct drm_crtc *crtc; | |
5153 | enum pipe pipe; | |
5154 | ||
5155 | if (!dev_priv->drrs.dp) | |
5156 | return; | |
5157 | ||
3954e733 R |
5158 | cancel_delayed_work_sync(&dev_priv->drrs.work); |
5159 | ||
a93fad0f VK |
5160 | mutex_lock(&dev_priv->drrs.mutex); |
5161 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; | |
5162 | pipe = to_intel_crtc(crtc)->pipe; | |
5163 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
5164 | ||
a93fad0f VK |
5165 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR && |
5166 | !dev_priv->drrs.busy_frontbuffer_bits) | |
5167 | schedule_delayed_work(&dev_priv->drrs.work, | |
5168 | msecs_to_jiffies(1000)); | |
5169 | mutex_unlock(&dev_priv->drrs.mutex); | |
5170 | } | |
5171 | ||
b33a2815 VK |
5172 | /** |
5173 | * DOC: Display Refresh Rate Switching (DRRS) | |
5174 | * | |
5175 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5176 | * which enables swtching between low and high refresh rates, | |
5177 | * dynamically, based on the usage scenario. This feature is applicable | |
5178 | * for internal panels. | |
5179 | * | |
5180 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5181 | * would list multiple refresh rates for one resolution. | |
5182 | * | |
5183 | * DRRS is of 2 types - static and seamless. | |
5184 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5185 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5186 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5187 | * and can be used during normal system usage. This is done by programming | |
5188 | * certain registers. | |
5189 | * | |
5190 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5191 | * inputs from the panel spec. | |
5192 | * | |
5193 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5194 | * | |
5195 | * eDP DRRS:- | |
5196 | * The implementation is based on frontbuffer tracking implementation. | |
5197 | * When there is a disturbance on the screen triggered by user activity or a | |
5198 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5199 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5200 | * to low RR is made. | |
5201 | * For integration with frontbuffer tracking code, | |
5202 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5203 | * | |
5204 | * DRRS can be further extended to support other internal panels and also | |
5205 | * the scenario of video playback wherein RR is set based on the rate | |
5206 | * requested by userspace. | |
5207 | */ | |
5208 | ||
5209 | /** | |
5210 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5211 | * @intel_connector: eDP connector | |
5212 | * @fixed_mode: preferred mode of panel | |
5213 | * | |
5214 | * This function is called only once at driver load to initialize basic | |
5215 | * DRRS stuff. | |
5216 | * | |
5217 | * Returns: | |
5218 | * Downclock mode if panel supports it, else return NULL. | |
5219 | * DRRS support is determined by the presence of downclock mode (apart | |
5220 | * from VBT setting). | |
5221 | */ | |
4f9db5b5 | 5222 | static struct drm_display_mode * |
96178eeb VK |
5223 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5224 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5225 | { |
5226 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5227 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5228 | struct drm_i915_private *dev_priv = dev->dev_private; |
5229 | struct drm_display_mode *downclock_mode = NULL; | |
5230 | ||
5231 | if (INTEL_INFO(dev)->gen <= 6) { | |
5232 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5233 | return NULL; | |
5234 | } | |
5235 | ||
5236 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5237 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5238 | return NULL; |
5239 | } | |
5240 | ||
5241 | downclock_mode = intel_find_panel_downclock | |
5242 | (dev, fixed_mode, connector); | |
5243 | ||
5244 | if (!downclock_mode) { | |
a1d26342 | 5245 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5246 | return NULL; |
5247 | } | |
5248 | ||
4e9ac947 VK |
5249 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5250 | ||
96178eeb | 5251 | mutex_init(&dev_priv->drrs.mutex); |
439d7ac0 | 5252 | |
96178eeb | 5253 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5254 | |
96178eeb | 5255 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5256 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5257 | return downclock_mode; |
5258 | } | |
5259 | ||
ed92f0b2 | 5260 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5261 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5262 | { |
5263 | struct drm_connector *connector = &intel_connector->base; | |
5264 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5265 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5266 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5267 | struct drm_i915_private *dev_priv = dev->dev_private; |
5268 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5269 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5270 | bool has_dpcd; |
5271 | struct drm_display_mode *scan; | |
5272 | struct edid *edid; | |
6517d273 | 5273 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 | 5274 | |
96178eeb | 5275 | dev_priv->drrs.type = DRRS_NOT_SUPPORTED; |
4f9db5b5 | 5276 | |
ed92f0b2 PZ |
5277 | if (!is_edp(intel_dp)) |
5278 | return true; | |
5279 | ||
49e6bc51 VS |
5280 | pps_lock(intel_dp); |
5281 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5282 | pps_unlock(intel_dp); | |
63635217 | 5283 | |
ed92f0b2 | 5284 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5285 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5286 | |
5287 | if (has_dpcd) { | |
5288 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5289 | dev_priv->no_aux_handshake = | |
5290 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5291 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5292 | } else { | |
5293 | /* if this fails, presume the device is a ghost */ | |
5294 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5295 | return false; |
5296 | } | |
5297 | ||
5298 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5299 | pps_lock(intel_dp); |
36b5f425 | 5300 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5301 | pps_unlock(intel_dp); |
ed92f0b2 | 5302 | |
060c8778 | 5303 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5304 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5305 | if (edid) { |
5306 | if (drm_add_edid_modes(connector, edid)) { | |
5307 | drm_mode_connector_update_edid_property(connector, | |
5308 | edid); | |
5309 | drm_edid_to_eld(connector, edid); | |
5310 | } else { | |
5311 | kfree(edid); | |
5312 | edid = ERR_PTR(-EINVAL); | |
5313 | } | |
5314 | } else { | |
5315 | edid = ERR_PTR(-ENOENT); | |
5316 | } | |
5317 | intel_connector->edid = edid; | |
5318 | ||
5319 | /* prefer fixed mode from EDID if available */ | |
5320 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5321 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5322 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5323 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5324 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5325 | break; |
5326 | } | |
5327 | } | |
5328 | ||
5329 | /* fallback to VBT if available for eDP */ | |
5330 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5331 | fixed_mode = drm_mode_duplicate(dev, | |
5332 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5333 | if (fixed_mode) | |
5334 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5335 | } | |
060c8778 | 5336 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5337 | |
01527b31 CT |
5338 | if (IS_VALLEYVIEW(dev)) { |
5339 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5340 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5341 | |
5342 | /* | |
5343 | * Figure out the current pipe for the initial backlight setup. | |
5344 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5345 | * fails just assume pipe A. | |
5346 | */ | |
5347 | if (IS_CHERRYVIEW(dev)) | |
5348 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5349 | else | |
5350 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5351 | ||
5352 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5353 | pipe = intel_dp->pps_pipe; | |
5354 | ||
5355 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5356 | pipe = PIPE_A; | |
5357 | ||
5358 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5359 | pipe_name(pipe)); | |
01527b31 CT |
5360 | } |
5361 | ||
4f9db5b5 | 5362 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
73580fb7 | 5363 | intel_connector->panel.backlight_power = intel_edp_backlight_power; |
6517d273 | 5364 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5365 | |
5366 | return true; | |
5367 | } | |
5368 | ||
16c25533 | 5369 | bool |
f0fec3f2 PZ |
5370 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5371 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5372 | { |
f0fec3f2 PZ |
5373 | struct drm_connector *connector = &intel_connector->base; |
5374 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5375 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5376 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 5377 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 5378 | enum port port = intel_dig_port->port; |
0b99836f | 5379 | int type; |
a4fc5ed6 | 5380 | |
a4a5d2f8 VS |
5381 | intel_dp->pps_pipe = INVALID_PIPE; |
5382 | ||
ec5b01dd | 5383 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5384 | if (INTEL_INFO(dev)->gen >= 9) |
5385 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
5386 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
5387 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
5388 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
5389 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5390 | else if (HAS_PCH_SPLIT(dev)) | |
5391 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5392 | else | |
5393 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
5394 | ||
b9ca5fad DL |
5395 | if (INTEL_INFO(dev)->gen >= 9) |
5396 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5397 | else | |
5398 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 5399 | |
0767935e DV |
5400 | /* Preserve the current hw state. */ |
5401 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5402 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5403 | |
3b32a35b | 5404 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5405 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5406 | else |
5407 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5408 | |
f7d24902 ID |
5409 | /* |
5410 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5411 | * for DP the encoder type can be set by the caller to | |
5412 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5413 | */ | |
5414 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5415 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5416 | ||
c17ed5b5 VS |
5417 | /* eDP only on port B and/or C on vlv/chv */ |
5418 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
5419 | port != PORT_B && port != PORT_C)) | |
5420 | return false; | |
5421 | ||
e7281eab ID |
5422 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5423 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5424 | port_name(port)); | |
5425 | ||
b329530c | 5426 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5427 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5428 | ||
a4fc5ed6 KP |
5429 | connector->interlace_allowed = true; |
5430 | connector->doublescan_allowed = 0; | |
5431 | ||
f0fec3f2 | 5432 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5433 | edp_panel_vdd_work); |
a4fc5ed6 | 5434 | |
df0e9248 | 5435 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 5436 | drm_connector_register(connector); |
a4fc5ed6 | 5437 | |
affa9354 | 5438 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5439 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5440 | else | |
5441 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 5442 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 5443 | |
0b99836f | 5444 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5445 | switch (port) { |
5446 | case PORT_A: | |
1d843f9d | 5447 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5448 | break; |
5449 | case PORT_B: | |
1d843f9d | 5450 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
5451 | break; |
5452 | case PORT_C: | |
1d843f9d | 5453 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5454 | break; |
5455 | case PORT_D: | |
1d843f9d | 5456 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
5457 | break; |
5458 | default: | |
ad1c0b19 | 5459 | BUG(); |
5eb08b69 ZW |
5460 | } |
5461 | ||
dada1a9f | 5462 | if (is_edp(intel_dp)) { |
773538e8 | 5463 | pps_lock(intel_dp); |
1e74a324 VS |
5464 | intel_dp_init_panel_power_timestamps(intel_dp); |
5465 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 5466 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 5467 | else |
36b5f425 | 5468 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 5469 | pps_unlock(intel_dp); |
dada1a9f | 5470 | } |
0095e6dc | 5471 | |
9d1a1031 | 5472 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 5473 | |
0e32b39c | 5474 | /* init MST on ports that can support it */ |
c86ea3d0 | 5475 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) { |
0e32b39c | 5476 | if (port == PORT_B || port == PORT_C || port == PORT_D) { |
a4a5d2f8 VS |
5477 | intel_dp_mst_encoder_init(intel_dig_port, |
5478 | intel_connector->base.base.id); | |
0e32b39c DA |
5479 | } |
5480 | } | |
5481 | ||
36b5f425 | 5482 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 5483 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
5484 | if (is_edp(intel_dp)) { |
5485 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5486 | /* |
5487 | * vdd might still be enabled do to the delayed vdd off. | |
5488 | * Make sure vdd is actually turned off here. | |
5489 | */ | |
773538e8 | 5490 | pps_lock(intel_dp); |
4be73780 | 5491 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5492 | pps_unlock(intel_dp); |
15b1d171 | 5493 | } |
34ea3d38 | 5494 | drm_connector_unregister(connector); |
b2f246a8 | 5495 | drm_connector_cleanup(connector); |
16c25533 | 5496 | return false; |
b2f246a8 | 5497 | } |
32f9d658 | 5498 | |
f684960e CW |
5499 | intel_dp_add_properties(intel_dp, connector); |
5500 | ||
a4fc5ed6 KP |
5501 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5502 | * 0xd. Failure to do so will result in spurious interrupts being | |
5503 | * generated on the port when a cable is not attached. | |
5504 | */ | |
5505 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5506 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5507 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5508 | } | |
16c25533 PZ |
5509 | |
5510 | return true; | |
a4fc5ed6 | 5511 | } |
f0fec3f2 PZ |
5512 | |
5513 | void | |
5514 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
5515 | { | |
13cf5504 | 5516 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
5517 | struct intel_digital_port *intel_dig_port; |
5518 | struct intel_encoder *intel_encoder; | |
5519 | struct drm_encoder *encoder; | |
5520 | struct intel_connector *intel_connector; | |
5521 | ||
b14c5679 | 5522 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
5523 | if (!intel_dig_port) |
5524 | return; | |
5525 | ||
b14c5679 | 5526 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
5527 | if (!intel_connector) { |
5528 | kfree(intel_dig_port); | |
5529 | return; | |
5530 | } | |
5531 | ||
5532 | intel_encoder = &intel_dig_port->base; | |
5533 | encoder = &intel_encoder->base; | |
5534 | ||
5535 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
5536 | DRM_MODE_ENCODER_TMDS); | |
5537 | ||
5bfe2ac0 | 5538 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5539 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5540 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5541 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5542 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5543 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5544 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5545 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5546 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5547 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 5548 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5549 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5550 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5551 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5552 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5553 | } else { |
ecff4f3b JN |
5554 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5555 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5556 | if (INTEL_INFO(dev)->gen >= 5) |
5557 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5558 | } |
f0fec3f2 | 5559 | |
174edf1f | 5560 | intel_dig_port->port = port; |
f0fec3f2 PZ |
5561 | intel_dig_port->dp.output_reg = output_reg; |
5562 | ||
00c09d70 | 5563 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
5564 | if (IS_CHERRYVIEW(dev)) { |
5565 | if (port == PORT_D) | |
5566 | intel_encoder->crtc_mask = 1 << 2; | |
5567 | else | |
5568 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5569 | } else { | |
5570 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5571 | } | |
bc079e8b | 5572 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
5573 | intel_encoder->hot_plug = intel_dp_hot_plug; |
5574 | ||
13cf5504 DA |
5575 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5576 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
5577 | ||
15b1d171 PZ |
5578 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
5579 | drm_encoder_cleanup(encoder); | |
5580 | kfree(intel_dig_port); | |
b2f246a8 | 5581 | kfree(intel_connector); |
15b1d171 | 5582 | } |
f0fec3f2 | 5583 | } |
0e32b39c DA |
5584 | |
5585 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5586 | { | |
5587 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5588 | int i; | |
5589 | ||
5590 | /* disable MST */ | |
5591 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5592 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5593 | if (!intel_dig_port) | |
5594 | continue; | |
5595 | ||
5596 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5597 | if (!intel_dig_port->dp.can_mst) | |
5598 | continue; | |
5599 | if (intel_dig_port->dp.is_mst) | |
5600 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
5601 | } | |
5602 | } | |
5603 | } | |
5604 | ||
5605 | void intel_dp_mst_resume(struct drm_device *dev) | |
5606 | { | |
5607 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5608 | int i; | |
5609 | ||
5610 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5611 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
5612 | if (!intel_dig_port) | |
5613 | continue; | |
5614 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
5615 | int ret; | |
5616 | ||
5617 | if (!intel_dig_port->dp.can_mst) | |
5618 | continue; | |
5619 | ||
5620 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
5621 | if (ret != 0) { | |
5622 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
5623 | } | |
5624 | } | |
5625 | } | |
5626 | } |