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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
01527b31 CT |
31 | #include <linux/notifier.h> |
32 | #include <linux/reboot.h> | |
760285e7 | 33 | #include <drm/drmP.h> |
c6f95f27 | 34 | #include <drm/drm_atomic_helper.h> |
760285e7 DH |
35 | #include <drm/drm_crtc.h> |
36 | #include <drm/drm_crtc_helper.h> | |
37 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 38 | #include "intel_drv.h" |
760285e7 | 39 | #include <drm/i915_drm.h> |
a4fc5ed6 | 40 | #include "i915_drv.h" |
a4fc5ed6 | 41 | |
a4fc5ed6 KP |
42 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
43 | ||
559be30c TP |
44 | /* Compliance test status bits */ |
45 | #define INTEL_DP_RESOLUTION_SHIFT_MASK 0 | |
46 | #define INTEL_DP_RESOLUTION_PREFERRED (1 << INTEL_DP_RESOLUTION_SHIFT_MASK) | |
47 | #define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK) | |
48 | #define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK) | |
49 | ||
9dd4ffdf | 50 | struct dp_link_dpll { |
840b32b7 | 51 | int clock; |
9dd4ffdf CML |
52 | struct dpll dpll; |
53 | }; | |
54 | ||
55 | static const struct dp_link_dpll gen4_dpll[] = { | |
840b32b7 | 56 | { 162000, |
9dd4ffdf | 57 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, |
840b32b7 | 58 | { 270000, |
9dd4ffdf CML |
59 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } |
60 | }; | |
61 | ||
62 | static const struct dp_link_dpll pch_dpll[] = { | |
840b32b7 | 63 | { 162000, |
9dd4ffdf | 64 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, |
840b32b7 | 65 | { 270000, |
9dd4ffdf CML |
66 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } |
67 | }; | |
68 | ||
65ce4bf5 | 69 | static const struct dp_link_dpll vlv_dpll[] = { |
840b32b7 | 70 | { 162000, |
58f6e632 | 71 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
840b32b7 | 72 | { 270000, |
65ce4bf5 CML |
73 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } |
74 | }; | |
75 | ||
ef9348c8 CML |
76 | /* |
77 | * CHV supports eDP 1.4 that have more link rates. | |
78 | * Below only provides the fixed rate but exclude variable rate. | |
79 | */ | |
80 | static const struct dp_link_dpll chv_dpll[] = { | |
81 | /* | |
82 | * CHV requires to program fractional division for m2. | |
83 | * m2 is stored in fixed point format using formula below | |
84 | * (m2_int << 22) | m2_fraction | |
85 | */ | |
840b32b7 | 86 | { 162000, /* m2_int = 32, m2_fraction = 1677722 */ |
ef9348c8 | 87 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, |
840b32b7 | 88 | { 270000, /* m2_int = 27, m2_fraction = 0 */ |
ef9348c8 | 89 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, |
840b32b7 | 90 | { 540000, /* m2_int = 27, m2_fraction = 0 */ |
ef9348c8 CML |
91 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } |
92 | }; | |
637a9c63 | 93 | |
64987fc5 SJ |
94 | static const int bxt_rates[] = { 162000, 216000, 243000, 270000, |
95 | 324000, 432000, 540000 }; | |
637a9c63 | 96 | static const int skl_rates[] = { 162000, 216000, 270000, |
f4896f15 VS |
97 | 324000, 432000, 540000 }; |
98 | static const int default_rates[] = { 162000, 270000, 540000 }; | |
ef9348c8 | 99 | |
cfcb0fc9 JB |
100 | /** |
101 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
102 | * @intel_dp: DP struct | |
103 | * | |
104 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
105 | * will return true, and false otherwise. | |
106 | */ | |
107 | static bool is_edp(struct intel_dp *intel_dp) | |
108 | { | |
da63a9f2 PZ |
109 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
110 | ||
111 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
112 | } |
113 | ||
68b4d824 | 114 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 115 | { |
68b4d824 ID |
116 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
117 | ||
118 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
119 | } |
120 | ||
df0e9248 CW |
121 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
122 | { | |
fa90ecef | 123 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
124 | } |
125 | ||
ea5b213a | 126 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
1e0560e0 | 127 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 128 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
093e3f13 | 129 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); |
a8c3344e VS |
130 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
131 | enum pipe pipe); | |
a4fc5ed6 | 132 | |
e0fce78f VS |
133 | static unsigned int intel_dp_unused_lane_mask(int lane_count) |
134 | { | |
135 | return ~((1 << lane_count) - 1) & 0xf; | |
136 | } | |
137 | ||
ed4e9c1d VS |
138 | static int |
139 | intel_dp_max_link_bw(struct intel_dp *intel_dp) | |
a4fc5ed6 | 140 | { |
7183dc29 | 141 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
142 | |
143 | switch (max_link_bw) { | |
144 | case DP_LINK_BW_1_62: | |
145 | case DP_LINK_BW_2_7: | |
1db10e28 | 146 | case DP_LINK_BW_5_4: |
d4eead50 | 147 | break; |
a4fc5ed6 | 148 | default: |
d4eead50 ID |
149 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
150 | max_link_bw); | |
a4fc5ed6 KP |
151 | max_link_bw = DP_LINK_BW_1_62; |
152 | break; | |
153 | } | |
154 | return max_link_bw; | |
155 | } | |
156 | ||
eeb6324d PZ |
157 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
158 | { | |
159 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
160 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
161 | u8 source_max, sink_max; | |
162 | ||
163 | source_max = 4; | |
164 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
165 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
166 | source_max = 2; | |
167 | ||
168 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
169 | ||
170 | return min(source_max, sink_max); | |
171 | } | |
172 | ||
cd9dde44 AJ |
173 | /* |
174 | * The units on the numbers in the next two are... bizarre. Examples will | |
175 | * make it clearer; this one parallels an example in the eDP spec. | |
176 | * | |
177 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
178 | * | |
179 | * 270000 * 1 * 8 / 10 == 216000 | |
180 | * | |
181 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
182 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
183 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
184 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
185 | * | |
186 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
187 | * get the result in decakilobits instead of kilobits. | |
188 | */ | |
189 | ||
a4fc5ed6 | 190 | static int |
c898261c | 191 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 192 | { |
cd9dde44 | 193 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
194 | } |
195 | ||
fe27d53e DA |
196 | static int |
197 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
198 | { | |
199 | return (max_link_clock * max_lanes * 8) / 10; | |
200 | } | |
201 | ||
c19de8eb | 202 | static enum drm_mode_status |
a4fc5ed6 KP |
203 | intel_dp_mode_valid(struct drm_connector *connector, |
204 | struct drm_display_mode *mode) | |
205 | { | |
df0e9248 | 206 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
207 | struct intel_connector *intel_connector = to_intel_connector(connector); |
208 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
209 | int target_clock = mode->clock; |
210 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 211 | |
dd06f90e JN |
212 | if (is_edp(intel_dp) && fixed_mode) { |
213 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
214 | return MODE_PANEL; |
215 | ||
dd06f90e | 216 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 217 | return MODE_PANEL; |
03afc4a2 DV |
218 | |
219 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
220 | } |
221 | ||
50fec21a | 222 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 223 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
224 | |
225 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
226 | mode_rate = intel_dp_link_required(target_clock, 18); | |
227 | ||
228 | if (mode_rate > max_rate) | |
c4867936 | 229 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
230 | |
231 | if (mode->clock < 10000) | |
232 | return MODE_CLOCK_LOW; | |
233 | ||
0af78a2b DV |
234 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
235 | return MODE_H_ILLEGAL; | |
236 | ||
a4fc5ed6 KP |
237 | return MODE_OK; |
238 | } | |
239 | ||
a4f1289e | 240 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
241 | { |
242 | int i; | |
243 | uint32_t v = 0; | |
244 | ||
245 | if (src_bytes > 4) | |
246 | src_bytes = 4; | |
247 | for (i = 0; i < src_bytes; i++) | |
248 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
249 | return v; | |
250 | } | |
251 | ||
c2af70e2 | 252 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
253 | { |
254 | int i; | |
255 | if (dst_bytes > 4) | |
256 | dst_bytes = 4; | |
257 | for (i = 0; i < dst_bytes; i++) | |
258 | dst[i] = src >> ((3-i) * 8); | |
259 | } | |
260 | ||
bf13e81b JN |
261 | static void |
262 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 263 | struct intel_dp *intel_dp); |
bf13e81b JN |
264 | static void |
265 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 266 | struct intel_dp *intel_dp); |
bf13e81b | 267 | |
773538e8 VS |
268 | static void pps_lock(struct intel_dp *intel_dp) |
269 | { | |
270 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
271 | struct intel_encoder *encoder = &intel_dig_port->base; | |
272 | struct drm_device *dev = encoder->base.dev; | |
273 | struct drm_i915_private *dev_priv = dev->dev_private; | |
274 | enum intel_display_power_domain power_domain; | |
275 | ||
276 | /* | |
277 | * See vlv_power_sequencer_reset() why we need | |
278 | * a power domain reference here. | |
279 | */ | |
280 | power_domain = intel_display_port_power_domain(encoder); | |
281 | intel_display_power_get(dev_priv, power_domain); | |
282 | ||
283 | mutex_lock(&dev_priv->pps_mutex); | |
284 | } | |
285 | ||
286 | static void pps_unlock(struct intel_dp *intel_dp) | |
287 | { | |
288 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
289 | struct intel_encoder *encoder = &intel_dig_port->base; | |
290 | struct drm_device *dev = encoder->base.dev; | |
291 | struct drm_i915_private *dev_priv = dev->dev_private; | |
292 | enum intel_display_power_domain power_domain; | |
293 | ||
294 | mutex_unlock(&dev_priv->pps_mutex); | |
295 | ||
296 | power_domain = intel_display_port_power_domain(encoder); | |
297 | intel_display_power_put(dev_priv, power_domain); | |
298 | } | |
299 | ||
961a0db0 VS |
300 | static void |
301 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
302 | { | |
303 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
304 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
305 | struct drm_i915_private *dev_priv = dev->dev_private; | |
306 | enum pipe pipe = intel_dp->pps_pipe; | |
0047eedc VS |
307 | bool pll_enabled, release_cl_override = false; |
308 | enum dpio_phy phy = DPIO_PHY(pipe); | |
309 | enum dpio_channel ch = vlv_pipe_to_channel(pipe); | |
961a0db0 VS |
310 | uint32_t DP; |
311 | ||
312 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
313 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
314 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
315 | return; | |
316 | ||
317 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
318 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
319 | ||
320 | /* Preserve the BIOS-computed detected bit. This is | |
321 | * supposed to be read-only. | |
322 | */ | |
323 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
324 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
325 | DP |= DP_PORT_WIDTH(1); | |
326 | DP |= DP_LINK_TRAIN_PAT_1; | |
327 | ||
328 | if (IS_CHERRYVIEW(dev)) | |
329 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
330 | else if (pipe == PIPE_B) | |
331 | DP |= DP_PIPEB_SELECT; | |
332 | ||
d288f65f VS |
333 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
334 | ||
335 | /* | |
336 | * The DPLL for the pipe must be enabled for this to work. | |
337 | * So enable temporarily it if it's not already enabled. | |
338 | */ | |
0047eedc VS |
339 | if (!pll_enabled) { |
340 | release_cl_override = IS_CHERRYVIEW(dev) && | |
341 | !chv_phy_powergate_ch(dev_priv, phy, ch, true); | |
342 | ||
d288f65f VS |
343 | vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? |
344 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll); | |
0047eedc | 345 | } |
d288f65f | 346 | |
961a0db0 VS |
347 | /* |
348 | * Similar magic as in intel_dp_enable_port(). | |
349 | * We _must_ do this port enable + disable trick | |
350 | * to make this power seqeuencer lock onto the port. | |
351 | * Otherwise even VDD force bit won't work. | |
352 | */ | |
353 | I915_WRITE(intel_dp->output_reg, DP); | |
354 | POSTING_READ(intel_dp->output_reg); | |
355 | ||
356 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
357 | POSTING_READ(intel_dp->output_reg); | |
358 | ||
359 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
360 | POSTING_READ(intel_dp->output_reg); | |
d288f65f | 361 | |
0047eedc | 362 | if (!pll_enabled) { |
d288f65f | 363 | vlv_force_pll_off(dev, pipe); |
0047eedc VS |
364 | |
365 | if (release_cl_override) | |
366 | chv_phy_powergate_ch(dev_priv, phy, ch, false); | |
367 | } | |
961a0db0 VS |
368 | } |
369 | ||
bf13e81b JN |
370 | static enum pipe |
371 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
372 | { | |
373 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b JN |
374 | struct drm_device *dev = intel_dig_port->base.base.dev; |
375 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
376 | struct intel_encoder *encoder; |
377 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 378 | enum pipe pipe; |
bf13e81b | 379 | |
e39b999a | 380 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 381 | |
a8c3344e VS |
382 | /* We should never land here with regular DP ports */ |
383 | WARN_ON(!is_edp(intel_dp)); | |
384 | ||
a4a5d2f8 VS |
385 | if (intel_dp->pps_pipe != INVALID_PIPE) |
386 | return intel_dp->pps_pipe; | |
387 | ||
388 | /* | |
389 | * We don't have power sequencer currently. | |
390 | * Pick one that's not used by other ports. | |
391 | */ | |
392 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, | |
393 | base.head) { | |
394 | struct intel_dp *tmp; | |
395 | ||
396 | if (encoder->type != INTEL_OUTPUT_EDP) | |
397 | continue; | |
398 | ||
399 | tmp = enc_to_intel_dp(&encoder->base); | |
400 | ||
401 | if (tmp->pps_pipe != INVALID_PIPE) | |
402 | pipes &= ~(1 << tmp->pps_pipe); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Didn't find one. This should not happen since there | |
407 | * are two power sequencers and up to two eDP ports. | |
408 | */ | |
409 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
410 | pipe = PIPE_A; |
411 | else | |
412 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 413 | |
a8c3344e VS |
414 | vlv_steal_power_sequencer(dev, pipe); |
415 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
416 | |
417 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
418 | pipe_name(intel_dp->pps_pipe), | |
419 | port_name(intel_dig_port->port)); | |
420 | ||
421 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
422 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
423 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 424 | |
961a0db0 VS |
425 | /* |
426 | * Even vdd force doesn't work until we've made | |
427 | * the power sequencer lock in on the port. | |
428 | */ | |
429 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
430 | |
431 | return intel_dp->pps_pipe; | |
432 | } | |
433 | ||
6491ab27 VS |
434 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
435 | enum pipe pipe); | |
436 | ||
437 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
438 | enum pipe pipe) | |
439 | { | |
440 | return I915_READ(VLV_PIPE_PP_STATUS(pipe)) & PP_ON; | |
441 | } | |
442 | ||
443 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
444 | enum pipe pipe) | |
445 | { | |
446 | return I915_READ(VLV_PIPE_PP_CONTROL(pipe)) & EDP_FORCE_VDD; | |
447 | } | |
448 | ||
449 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
450 | enum pipe pipe) | |
451 | { | |
452 | return true; | |
453 | } | |
bf13e81b | 454 | |
a4a5d2f8 | 455 | static enum pipe |
6491ab27 VS |
456 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
457 | enum port port, | |
458 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
459 | { |
460 | enum pipe pipe; | |
bf13e81b | 461 | |
bf13e81b JN |
462 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
463 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
464 | PANEL_PORT_SELECT_MASK; | |
a4a5d2f8 VS |
465 | |
466 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
467 | continue; | |
468 | ||
6491ab27 VS |
469 | if (!pipe_check(dev_priv, pipe)) |
470 | continue; | |
471 | ||
a4a5d2f8 | 472 | return pipe; |
bf13e81b JN |
473 | } |
474 | ||
a4a5d2f8 VS |
475 | return INVALID_PIPE; |
476 | } | |
477 | ||
478 | static void | |
479 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
480 | { | |
481 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
482 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
483 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4a5d2f8 VS |
484 | enum port port = intel_dig_port->port; |
485 | ||
486 | lockdep_assert_held(&dev_priv->pps_mutex); | |
487 | ||
488 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
489 | /* first pick one where the panel is on */ |
490 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
491 | vlv_pipe_has_pp_on); | |
492 | /* didn't find one? pick one where vdd is on */ | |
493 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
494 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
495 | vlv_pipe_has_vdd_on); | |
496 | /* didn't find one? pick one with just the correct port */ | |
497 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
498 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
499 | vlv_pipe_any); | |
a4a5d2f8 VS |
500 | |
501 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
502 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
503 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
504 | port_name(port)); | |
505 | return; | |
bf13e81b JN |
506 | } |
507 | ||
a4a5d2f8 VS |
508 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
509 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
510 | ||
36b5f425 VS |
511 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
512 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
513 | } |
514 | ||
773538e8 VS |
515 | void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv) |
516 | { | |
517 | struct drm_device *dev = dev_priv->dev; | |
518 | struct intel_encoder *encoder; | |
519 | ||
520 | if (WARN_ON(!IS_VALLEYVIEW(dev))) | |
521 | return; | |
522 | ||
523 | /* | |
524 | * We can't grab pps_mutex here due to deadlock with power_domain | |
525 | * mutex when power_domain functions are called while holding pps_mutex. | |
526 | * That also means that in order to use pps_pipe the code needs to | |
527 | * hold both a power domain reference and pps_mutex, and the power domain | |
528 | * reference get/put must be done while _not_ holding pps_mutex. | |
529 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
530 | * should use them always. | |
531 | */ | |
532 | ||
533 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) { | |
534 | struct intel_dp *intel_dp; | |
535 | ||
536 | if (encoder->type != INTEL_OUTPUT_EDP) | |
537 | continue; | |
538 | ||
539 | intel_dp = enc_to_intel_dp(&encoder->base); | |
540 | intel_dp->pps_pipe = INVALID_PIPE; | |
541 | } | |
bf13e81b JN |
542 | } |
543 | ||
544 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
545 | { | |
546 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
547 | ||
b0a08bec VK |
548 | if (IS_BROXTON(dev)) |
549 | return BXT_PP_CONTROL(0); | |
550 | else if (HAS_PCH_SPLIT(dev)) | |
bf13e81b JN |
551 | return PCH_PP_CONTROL; |
552 | else | |
553 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
554 | } | |
555 | ||
556 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
557 | { | |
558 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
559 | ||
b0a08bec VK |
560 | if (IS_BROXTON(dev)) |
561 | return BXT_PP_STATUS(0); | |
562 | else if (HAS_PCH_SPLIT(dev)) | |
bf13e81b JN |
563 | return PCH_PP_STATUS; |
564 | else | |
565 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
566 | } | |
567 | ||
01527b31 CT |
568 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
569 | This function only applicable when panel PM state is not to be tracked */ | |
570 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
571 | void *unused) | |
572 | { | |
573 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
574 | edp_notifier); | |
575 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
576 | struct drm_i915_private *dev_priv = dev->dev_private; | |
577 | u32 pp_div; | |
578 | u32 pp_ctrl_reg, pp_div_reg; | |
01527b31 CT |
579 | |
580 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
581 | return 0; | |
582 | ||
773538e8 | 583 | pps_lock(intel_dp); |
e39b999a | 584 | |
01527b31 | 585 | if (IS_VALLEYVIEW(dev)) { |
e39b999a VS |
586 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
587 | ||
01527b31 CT |
588 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); |
589 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
590 | pp_div = I915_READ(pp_div_reg); | |
591 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
592 | ||
593 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
594 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
595 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
596 | msleep(intel_dp->panel_power_cycle_delay); | |
597 | } | |
598 | ||
773538e8 | 599 | pps_unlock(intel_dp); |
e39b999a | 600 | |
01527b31 CT |
601 | return 0; |
602 | } | |
603 | ||
4be73780 | 604 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 605 | { |
30add22d | 606 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
607 | struct drm_i915_private *dev_priv = dev->dev_private; |
608 | ||
e39b999a VS |
609 | lockdep_assert_held(&dev_priv->pps_mutex); |
610 | ||
9a42356b VS |
611 | if (IS_VALLEYVIEW(dev) && |
612 | intel_dp->pps_pipe == INVALID_PIPE) | |
613 | return false; | |
614 | ||
bf13e81b | 615 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
616 | } |
617 | ||
4be73780 | 618 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 619 | { |
30add22d | 620 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
621 | struct drm_i915_private *dev_priv = dev->dev_private; |
622 | ||
e39b999a VS |
623 | lockdep_assert_held(&dev_priv->pps_mutex); |
624 | ||
9a42356b VS |
625 | if (IS_VALLEYVIEW(dev) && |
626 | intel_dp->pps_pipe == INVALID_PIPE) | |
627 | return false; | |
628 | ||
773538e8 | 629 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
630 | } |
631 | ||
9b984dae KP |
632 | static void |
633 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
634 | { | |
30add22d | 635 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 636 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 637 | |
9b984dae KP |
638 | if (!is_edp(intel_dp)) |
639 | return; | |
453c5420 | 640 | |
4be73780 | 641 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
642 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
643 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
644 | I915_READ(_pp_stat_reg(intel_dp)), |
645 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
646 | } |
647 | } | |
648 | ||
9ee32fea DV |
649 | static uint32_t |
650 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
651 | { | |
652 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
653 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
654 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 655 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
656 | uint32_t status; |
657 | bool done; | |
658 | ||
ef04f00d | 659 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 660 | if (has_aux_irq) |
b18ac466 | 661 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 662 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
663 | else |
664 | done = wait_for_atomic(C, 10) == 0; | |
665 | if (!done) | |
666 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
667 | has_aux_irq); | |
668 | #undef C | |
669 | ||
670 | return status; | |
671 | } | |
672 | ||
ec5b01dd | 673 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 674 | { |
174edf1f PZ |
675 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
676 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 677 | |
ec5b01dd DL |
678 | /* |
679 | * The clock divider is based off the hrawclk, and would like to run at | |
680 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 681 | */ |
ec5b01dd DL |
682 | return index ? 0 : intel_hrawclk(dev) / 2; |
683 | } | |
684 | ||
685 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
686 | { | |
687 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
688 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
469d4b2a | 689 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd DL |
690 | |
691 | if (index) | |
692 | return 0; | |
693 | ||
694 | if (intel_dig_port->port == PORT_A) { | |
05024da3 VS |
695 | return DIV_ROUND_UP(dev_priv->cdclk_freq, 2000); |
696 | ||
ec5b01dd DL |
697 | } else { |
698 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
699 | } | |
700 | } | |
701 | ||
702 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
703 | { | |
704 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
705 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
706 | struct drm_i915_private *dev_priv = dev->dev_private; | |
707 | ||
708 | if (intel_dig_port->port == PORT_A) { | |
709 | if (index) | |
710 | return 0; | |
05024da3 | 711 | return DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 2000); |
2c55c336 JN |
712 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
713 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
714 | switch (index) { |
715 | case 0: return 63; | |
716 | case 1: return 72; | |
717 | default: return 0; | |
718 | } | |
ec5b01dd | 719 | } else { |
bc86625a | 720 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 721 | } |
b84a1cf8 RV |
722 | } |
723 | ||
ec5b01dd DL |
724 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
725 | { | |
726 | return index ? 0 : 100; | |
727 | } | |
728 | ||
b6b5e383 DL |
729 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
730 | { | |
731 | /* | |
732 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
733 | * derive the clock from CDCLK automatically). We still implement the | |
734 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
735 | */ | |
736 | return index ? 0 : 1; | |
737 | } | |
738 | ||
5ed12a19 DL |
739 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
740 | bool has_aux_irq, | |
741 | int send_bytes, | |
742 | uint32_t aux_clock_divider) | |
743 | { | |
744 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
745 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
746 | uint32_t precharge, timeout; | |
747 | ||
748 | if (IS_GEN6(dev)) | |
749 | precharge = 3; | |
750 | else | |
751 | precharge = 5; | |
752 | ||
753 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
754 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
755 | else | |
756 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
757 | ||
758 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 759 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 760 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 761 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 762 | timeout | |
788d4433 | 763 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
764 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
765 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 766 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
767 | } |
768 | ||
b9ca5fad DL |
769 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
770 | bool has_aux_irq, | |
771 | int send_bytes, | |
772 | uint32_t unused) | |
773 | { | |
774 | return DP_AUX_CH_CTL_SEND_BUSY | | |
775 | DP_AUX_CH_CTL_DONE | | |
776 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
777 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
778 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
779 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
780 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
781 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); | |
782 | } | |
783 | ||
b84a1cf8 RV |
784 | static int |
785 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 786 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
787 | uint8_t *recv, int recv_size) |
788 | { | |
789 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
790 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
791 | struct drm_i915_private *dev_priv = dev->dev_private; | |
792 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
793 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 794 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
795 | int i, ret, recv_bytes; |
796 | uint32_t status; | |
5ed12a19 | 797 | int try, clock = 0; |
4e6b788c | 798 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
799 | bool vdd; |
800 | ||
773538e8 | 801 | pps_lock(intel_dp); |
e39b999a | 802 | |
72c3500a VS |
803 | /* |
804 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
805 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
806 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
807 | * ourselves. | |
808 | */ | |
1e0560e0 | 809 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
810 | |
811 | /* dp aux is extremely sensitive to irq latency, hence request the | |
812 | * lowest possible wakeup latency and so prevent the cpu from going into | |
813 | * deep sleep states. | |
814 | */ | |
815 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
816 | ||
817 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 818 | |
c67a470b PZ |
819 | intel_aux_display_runtime_get(dev_priv); |
820 | ||
11bee43e JB |
821 | /* Try to wait for any previous AUX channel activity */ |
822 | for (try = 0; try < 3; try++) { | |
ef04f00d | 823 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
824 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
825 | break; | |
826 | msleep(1); | |
827 | } | |
828 | ||
829 | if (try == 3) { | |
02196c77 MK |
830 | static u32 last_status = -1; |
831 | const u32 status = I915_READ(ch_ctl); | |
832 | ||
833 | if (status != last_status) { | |
834 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
835 | status); | |
836 | last_status = status; | |
837 | } | |
838 | ||
9ee32fea DV |
839 | ret = -EBUSY; |
840 | goto out; | |
4f7f7b7e CW |
841 | } |
842 | ||
46a5ae9f PZ |
843 | /* Only 5 data registers! */ |
844 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
845 | ret = -E2BIG; | |
846 | goto out; | |
847 | } | |
848 | ||
ec5b01dd | 849 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
850 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
851 | has_aux_irq, | |
852 | send_bytes, | |
853 | aux_clock_divider); | |
5ed12a19 | 854 | |
bc86625a CW |
855 | /* Must try at least 3 times according to DP spec */ |
856 | for (try = 0; try < 5; try++) { | |
857 | /* Load the send data into the aux channel data registers */ | |
858 | for (i = 0; i < send_bytes; i += 4) | |
859 | I915_WRITE(ch_data + i, | |
a4f1289e RV |
860 | intel_dp_pack_aux(send + i, |
861 | send_bytes - i)); | |
bc86625a CW |
862 | |
863 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 864 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
865 | |
866 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
867 | ||
868 | /* Clear done status and any errors */ | |
869 | I915_WRITE(ch_ctl, | |
870 | status | | |
871 | DP_AUX_CH_CTL_DONE | | |
872 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
873 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
874 | ||
74ebf294 | 875 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) |
bc86625a | 876 | continue; |
74ebf294 TP |
877 | |
878 | /* DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2 | |
879 | * 400us delay required for errors and timeouts | |
880 | * Timeout errors from the HW already meet this | |
881 | * requirement so skip to next iteration | |
882 | */ | |
883 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { | |
884 | usleep_range(400, 500); | |
bc86625a | 885 | continue; |
74ebf294 | 886 | } |
bc86625a | 887 | if (status & DP_AUX_CH_CTL_DONE) |
e058c945 | 888 | goto done; |
bc86625a | 889 | } |
a4fc5ed6 KP |
890 | } |
891 | ||
a4fc5ed6 | 892 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 893 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
894 | ret = -EBUSY; |
895 | goto out; | |
a4fc5ed6 KP |
896 | } |
897 | ||
e058c945 | 898 | done: |
a4fc5ed6 KP |
899 | /* Check for timeout or receive error. |
900 | * Timeouts occur when the sink is not connected | |
901 | */ | |
a5b3da54 | 902 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 903 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
904 | ret = -EIO; |
905 | goto out; | |
a5b3da54 | 906 | } |
1ae8c0a5 KP |
907 | |
908 | /* Timeouts occur when the device isn't connected, so they're | |
909 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 910 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 911 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
912 | ret = -ETIMEDOUT; |
913 | goto out; | |
a4fc5ed6 KP |
914 | } |
915 | ||
916 | /* Unload any bytes sent back from the other side */ | |
917 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
918 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
919 | if (recv_bytes > recv_size) |
920 | recv_bytes = recv_size; | |
0206e353 | 921 | |
4f7f7b7e | 922 | for (i = 0; i < recv_bytes; i += 4) |
a4f1289e RV |
923 | intel_dp_unpack_aux(I915_READ(ch_data + i), |
924 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 925 | |
9ee32fea DV |
926 | ret = recv_bytes; |
927 | out: | |
928 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 929 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 930 | |
884f19e9 JN |
931 | if (vdd) |
932 | edp_panel_vdd_off(intel_dp, false); | |
933 | ||
773538e8 | 934 | pps_unlock(intel_dp); |
e39b999a | 935 | |
9ee32fea | 936 | return ret; |
a4fc5ed6 KP |
937 | } |
938 | ||
a6c8aff0 JN |
939 | #define BARE_ADDRESS_SIZE 3 |
940 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
941 | static ssize_t |
942 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 943 | { |
9d1a1031 JN |
944 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
945 | uint8_t txbuf[20], rxbuf[20]; | |
946 | size_t txsize, rxsize; | |
a4fc5ed6 | 947 | int ret; |
a4fc5ed6 | 948 | |
d2d9cbbd VS |
949 | txbuf[0] = (msg->request << 4) | |
950 | ((msg->address >> 16) & 0xf); | |
951 | txbuf[1] = (msg->address >> 8) & 0xff; | |
9d1a1031 JN |
952 | txbuf[2] = msg->address & 0xff; |
953 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 954 | |
9d1a1031 JN |
955 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
956 | case DP_AUX_NATIVE_WRITE: | |
957 | case DP_AUX_I2C_WRITE: | |
c1e74122 | 958 | case DP_AUX_I2C_WRITE_STATUS_UPDATE: |
a6c8aff0 | 959 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
a1ddefd8 | 960 | rxsize = 2; /* 0 or 1 data bytes */ |
f51a44b9 | 961 | |
9d1a1031 JN |
962 | if (WARN_ON(txsize > 20)) |
963 | return -E2BIG; | |
a4fc5ed6 | 964 | |
9d1a1031 | 965 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 966 | |
9d1a1031 JN |
967 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
968 | if (ret > 0) { | |
969 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 970 | |
a1ddefd8 JN |
971 | if (ret > 1) { |
972 | /* Number of bytes written in a short write. */ | |
973 | ret = clamp_t(int, rxbuf[1], 0, msg->size); | |
974 | } else { | |
975 | /* Return payload size. */ | |
976 | ret = msg->size; | |
977 | } | |
9d1a1031 JN |
978 | } |
979 | break; | |
46a5ae9f | 980 | |
9d1a1031 JN |
981 | case DP_AUX_NATIVE_READ: |
982 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 983 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 984 | rxsize = msg->size + 1; |
a4fc5ed6 | 985 | |
9d1a1031 JN |
986 | if (WARN_ON(rxsize > 20)) |
987 | return -E2BIG; | |
a4fc5ed6 | 988 | |
9d1a1031 JN |
989 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
990 | if (ret > 0) { | |
991 | msg->reply = rxbuf[0] >> 4; | |
992 | /* | |
993 | * Assume happy day, and copy the data. The caller is | |
994 | * expected to check msg->reply before touching it. | |
995 | * | |
996 | * Return payload size. | |
997 | */ | |
998 | ret--; | |
999 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 1000 | } |
9d1a1031 JN |
1001 | break; |
1002 | ||
1003 | default: | |
1004 | ret = -EINVAL; | |
1005 | break; | |
a4fc5ed6 | 1006 | } |
f51a44b9 | 1007 | |
9d1a1031 | 1008 | return ret; |
a4fc5ed6 KP |
1009 | } |
1010 | ||
9d1a1031 JN |
1011 | static void |
1012 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
1013 | { | |
1014 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
500ea70d | 1015 | struct drm_i915_private *dev_priv = dev->dev_private; |
33ad6626 JN |
1016 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1017 | enum port port = intel_dig_port->port; | |
500ea70d | 1018 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
0b99836f | 1019 | const char *name = NULL; |
500ea70d | 1020 | uint32_t porte_aux_ctl_reg = DPA_AUX_CH_CTL; |
ab2c0672 DA |
1021 | int ret; |
1022 | ||
500ea70d RV |
1023 | /* On SKL we don't have Aux for port E so we rely on VBT to set |
1024 | * a proper alternate aux channel. | |
1025 | */ | |
1026 | if (IS_SKYLAKE(dev) && port == PORT_E) { | |
1027 | switch (info->alternate_aux_channel) { | |
1028 | case DP_AUX_B: | |
1029 | porte_aux_ctl_reg = DPB_AUX_CH_CTL; | |
1030 | break; | |
1031 | case DP_AUX_C: | |
1032 | porte_aux_ctl_reg = DPC_AUX_CH_CTL; | |
1033 | break; | |
1034 | case DP_AUX_D: | |
1035 | porte_aux_ctl_reg = DPD_AUX_CH_CTL; | |
1036 | break; | |
1037 | case DP_AUX_A: | |
1038 | default: | |
1039 | porte_aux_ctl_reg = DPA_AUX_CH_CTL; | |
1040 | } | |
1041 | } | |
1042 | ||
33ad6626 JN |
1043 | switch (port) { |
1044 | case PORT_A: | |
1045 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 1046 | name = "DPDDC-A"; |
ab2c0672 | 1047 | break; |
33ad6626 JN |
1048 | case PORT_B: |
1049 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 1050 | name = "DPDDC-B"; |
ab2c0672 | 1051 | break; |
33ad6626 JN |
1052 | case PORT_C: |
1053 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 1054 | name = "DPDDC-C"; |
ab2c0672 | 1055 | break; |
33ad6626 JN |
1056 | case PORT_D: |
1057 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 1058 | name = "DPDDC-D"; |
33ad6626 | 1059 | break; |
500ea70d RV |
1060 | case PORT_E: |
1061 | intel_dp->aux_ch_ctl_reg = porte_aux_ctl_reg; | |
1062 | name = "DPDDC-E"; | |
1063 | break; | |
33ad6626 JN |
1064 | default: |
1065 | BUG(); | |
ab2c0672 DA |
1066 | } |
1067 | ||
1b1aad75 DL |
1068 | /* |
1069 | * The AUX_CTL register is usually DP_CTL + 0x10. | |
1070 | * | |
1071 | * On Haswell and Broadwell though: | |
1072 | * - Both port A DDI_BUF_CTL and DDI_AUX_CTL are on the CPU | |
1073 | * - Port B/C/D AUX channels are on the PCH, DDI_BUF_CTL on the CPU | |
1074 | * | |
1075 | * Skylake moves AUX_CTL back next to DDI_BUF_CTL, on the CPU. | |
1076 | */ | |
500ea70d | 1077 | if (!IS_HASWELL(dev) && !IS_BROADWELL(dev) && port != PORT_E) |
33ad6626 | 1078 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
8316f337 | 1079 | |
0b99836f | 1080 | intel_dp->aux.name = name; |
9d1a1031 JN |
1081 | intel_dp->aux.dev = dev->dev; |
1082 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 1083 | |
0b99836f JN |
1084 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
1085 | connector->base.kdev->kobj.name); | |
8316f337 | 1086 | |
4f71d0cb | 1087 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 1088 | if (ret < 0) { |
4f71d0cb | 1089 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
1090 | name, ret); |
1091 | return; | |
ab2c0672 | 1092 | } |
8a5e6aeb | 1093 | |
0b99836f JN |
1094 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
1095 | &intel_dp->aux.ddc.dev.kobj, | |
1096 | intel_dp->aux.ddc.dev.kobj.name); | |
1097 | if (ret < 0) { | |
1098 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 1099 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 1100 | } |
a4fc5ed6 KP |
1101 | } |
1102 | ||
80f65de3 ID |
1103 | static void |
1104 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
1105 | { | |
1106 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
1107 | ||
0e32b39c DA |
1108 | if (!intel_connector->mst_port) |
1109 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
1110 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
1111 | intel_connector_unregister(intel_connector); |
1112 | } | |
1113 | ||
5416d871 | 1114 | static void |
840b32b7 | 1115 | skl_edp_set_pll_config(struct intel_crtc_state *pipe_config) |
5416d871 DL |
1116 | { |
1117 | u32 ctrl1; | |
1118 | ||
dd3cd74a ACO |
1119 | memset(&pipe_config->dpll_hw_state, 0, |
1120 | sizeof(pipe_config->dpll_hw_state)); | |
1121 | ||
5416d871 DL |
1122 | pipe_config->ddi_pll_sel = SKL_DPLL0; |
1123 | pipe_config->dpll_hw_state.cfgcr1 = 0; | |
1124 | pipe_config->dpll_hw_state.cfgcr2 = 0; | |
1125 | ||
1126 | ctrl1 = DPLL_CTRL1_OVERRIDE(SKL_DPLL0); | |
840b32b7 | 1127 | switch (pipe_config->port_clock / 2) { |
c3346ef6 | 1128 | case 81000: |
71cd8423 | 1129 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, |
5416d871 DL |
1130 | SKL_DPLL0); |
1131 | break; | |
c3346ef6 | 1132 | case 135000: |
71cd8423 | 1133 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, |
5416d871 DL |
1134 | SKL_DPLL0); |
1135 | break; | |
c3346ef6 | 1136 | case 270000: |
71cd8423 | 1137 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, |
5416d871 DL |
1138 | SKL_DPLL0); |
1139 | break; | |
c3346ef6 | 1140 | case 162000: |
71cd8423 | 1141 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, |
c3346ef6 SJ |
1142 | SKL_DPLL0); |
1143 | break; | |
1144 | /* TBD: For DP link rates 2.16 GHz and 4.32 GHz, VCO is 8640 which | |
1145 | results in CDCLK change. Need to handle the change of CDCLK by | |
1146 | disabling pipes and re-enabling them */ | |
1147 | case 108000: | |
71cd8423 | 1148 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, |
c3346ef6 SJ |
1149 | SKL_DPLL0); |
1150 | break; | |
1151 | case 216000: | |
71cd8423 | 1152 | ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, |
c3346ef6 SJ |
1153 | SKL_DPLL0); |
1154 | break; | |
1155 | ||
5416d871 DL |
1156 | } |
1157 | pipe_config->dpll_hw_state.ctrl1 = ctrl1; | |
1158 | } | |
1159 | ||
6fa2d197 | 1160 | void |
840b32b7 | 1161 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config) |
0e50338c | 1162 | { |
ee46f3c7 ACO |
1163 | memset(&pipe_config->dpll_hw_state, 0, |
1164 | sizeof(pipe_config->dpll_hw_state)); | |
1165 | ||
840b32b7 VS |
1166 | switch (pipe_config->port_clock / 2) { |
1167 | case 81000: | |
0e50338c DV |
1168 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; |
1169 | break; | |
840b32b7 | 1170 | case 135000: |
0e50338c DV |
1171 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; |
1172 | break; | |
840b32b7 | 1173 | case 270000: |
0e50338c DV |
1174 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; |
1175 | break; | |
1176 | } | |
1177 | } | |
1178 | ||
fc0f8e25 | 1179 | static int |
12f6a2e2 | 1180 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
fc0f8e25 | 1181 | { |
94ca719e VS |
1182 | if (intel_dp->num_sink_rates) { |
1183 | *sink_rates = intel_dp->sink_rates; | |
1184 | return intel_dp->num_sink_rates; | |
fc0f8e25 | 1185 | } |
12f6a2e2 VS |
1186 | |
1187 | *sink_rates = default_rates; | |
1188 | ||
1189 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
fc0f8e25 SJ |
1190 | } |
1191 | ||
ed63baaf TS |
1192 | static bool intel_dp_source_supports_hbr2(struct drm_device *dev) |
1193 | { | |
1194 | /* WaDisableHBR2:skl */ | |
1195 | if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) | |
1196 | return false; | |
1197 | ||
1198 | if ((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || IS_BROADWELL(dev) || | |
1199 | (INTEL_INFO(dev)->gen >= 9)) | |
1200 | return true; | |
1201 | else | |
1202 | return false; | |
1203 | } | |
1204 | ||
a8f3ef61 | 1205 | static int |
1db10e28 | 1206 | intel_dp_source_rates(struct drm_device *dev, const int **source_rates) |
a8f3ef61 | 1207 | { |
af7080f5 TS |
1208 | int size; |
1209 | ||
64987fc5 SJ |
1210 | if (IS_BROXTON(dev)) { |
1211 | *source_rates = bxt_rates; | |
af7080f5 | 1212 | size = ARRAY_SIZE(bxt_rates); |
64987fc5 | 1213 | } else if (IS_SKYLAKE(dev)) { |
637a9c63 | 1214 | *source_rates = skl_rates; |
af7080f5 TS |
1215 | size = ARRAY_SIZE(skl_rates); |
1216 | } else { | |
1217 | *source_rates = default_rates; | |
1218 | size = ARRAY_SIZE(default_rates); | |
a8f3ef61 | 1219 | } |
636280ba | 1220 | |
ed63baaf | 1221 | /* This depends on the fact that 5.4 is last value in the array */ |
af7080f5 TS |
1222 | if (!intel_dp_source_supports_hbr2(dev)) |
1223 | size--; | |
636280ba | 1224 | |
af7080f5 | 1225 | return size; |
a8f3ef61 SJ |
1226 | } |
1227 | ||
c6bb3538 DV |
1228 | static void |
1229 | intel_dp_set_clock(struct intel_encoder *encoder, | |
840b32b7 | 1230 | struct intel_crtc_state *pipe_config) |
c6bb3538 DV |
1231 | { |
1232 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1233 | const struct dp_link_dpll *divisor = NULL; |
1234 | int i, count = 0; | |
c6bb3538 DV |
1235 | |
1236 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1237 | divisor = gen4_dpll; |
1238 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1239 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1240 | divisor = pch_dpll; |
1241 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1242 | } else if (IS_CHERRYVIEW(dev)) { |
1243 | divisor = chv_dpll; | |
1244 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1245 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1246 | divisor = vlv_dpll; |
1247 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1248 | } |
9dd4ffdf CML |
1249 | |
1250 | if (divisor && count) { | |
1251 | for (i = 0; i < count; i++) { | |
840b32b7 | 1252 | if (pipe_config->port_clock == divisor[i].clock) { |
9dd4ffdf CML |
1253 | pipe_config->dpll = divisor[i].dpll; |
1254 | pipe_config->clock_set = true; | |
1255 | break; | |
1256 | } | |
1257 | } | |
c6bb3538 DV |
1258 | } |
1259 | } | |
1260 | ||
2ecae76a VS |
1261 | static int intersect_rates(const int *source_rates, int source_len, |
1262 | const int *sink_rates, int sink_len, | |
94ca719e | 1263 | int *common_rates) |
a8f3ef61 SJ |
1264 | { |
1265 | int i = 0, j = 0, k = 0; | |
1266 | ||
a8f3ef61 SJ |
1267 | while (i < source_len && j < sink_len) { |
1268 | if (source_rates[i] == sink_rates[j]) { | |
e6bda3e4 VS |
1269 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) |
1270 | return k; | |
94ca719e | 1271 | common_rates[k] = source_rates[i]; |
a8f3ef61 SJ |
1272 | ++k; |
1273 | ++i; | |
1274 | ++j; | |
1275 | } else if (source_rates[i] < sink_rates[j]) { | |
1276 | ++i; | |
1277 | } else { | |
1278 | ++j; | |
1279 | } | |
1280 | } | |
1281 | return k; | |
1282 | } | |
1283 | ||
94ca719e VS |
1284 | static int intel_dp_common_rates(struct intel_dp *intel_dp, |
1285 | int *common_rates) | |
2ecae76a VS |
1286 | { |
1287 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1288 | const int *source_rates, *sink_rates; | |
1289 | int source_len, sink_len; | |
1290 | ||
1291 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1292 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1293 | ||
1294 | return intersect_rates(source_rates, source_len, | |
1295 | sink_rates, sink_len, | |
94ca719e | 1296 | common_rates); |
2ecae76a VS |
1297 | } |
1298 | ||
0336400e VS |
1299 | static void snprintf_int_array(char *str, size_t len, |
1300 | const int *array, int nelem) | |
1301 | { | |
1302 | int i; | |
1303 | ||
1304 | str[0] = '\0'; | |
1305 | ||
1306 | for (i = 0; i < nelem; i++) { | |
b2f505be | 1307 | int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]); |
0336400e VS |
1308 | if (r >= len) |
1309 | return; | |
1310 | str += r; | |
1311 | len -= r; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | static void intel_dp_print_rates(struct intel_dp *intel_dp) | |
1316 | { | |
1317 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1318 | const int *source_rates, *sink_rates; | |
94ca719e VS |
1319 | int source_len, sink_len, common_len; |
1320 | int common_rates[DP_MAX_SUPPORTED_RATES]; | |
0336400e VS |
1321 | char str[128]; /* FIXME: too big for stack? */ |
1322 | ||
1323 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1324 | return; | |
1325 | ||
1326 | source_len = intel_dp_source_rates(dev, &source_rates); | |
1327 | snprintf_int_array(str, sizeof(str), source_rates, source_len); | |
1328 | DRM_DEBUG_KMS("source rates: %s\n", str); | |
1329 | ||
1330 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1331 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); | |
1332 | DRM_DEBUG_KMS("sink rates: %s\n", str); | |
1333 | ||
94ca719e VS |
1334 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1335 | snprintf_int_array(str, sizeof(str), common_rates, common_len); | |
1336 | DRM_DEBUG_KMS("common rates: %s\n", str); | |
0336400e VS |
1337 | } |
1338 | ||
f4896f15 | 1339 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1340 | { |
1341 | int i = 0; | |
1342 | ||
1343 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1344 | if (find == rates[i]) | |
1345 | break; | |
1346 | ||
1347 | return i; | |
1348 | } | |
1349 | ||
50fec21a VS |
1350 | int |
1351 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1352 | { | |
1353 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1354 | int len; | |
1355 | ||
94ca719e | 1356 | len = intel_dp_common_rates(intel_dp, rates); |
50fec21a VS |
1357 | if (WARN_ON(len <= 0)) |
1358 | return 162000; | |
1359 | ||
1360 | return rates[rate_to_index(0, rates) - 1]; | |
1361 | } | |
1362 | ||
ed4e9c1d VS |
1363 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1364 | { | |
94ca719e | 1365 | return rate_to_index(rate, intel_dp->sink_rates); |
ed4e9c1d VS |
1366 | } |
1367 | ||
04a60f9f VS |
1368 | static void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, |
1369 | uint8_t *link_bw, uint8_t *rate_select) | |
1370 | { | |
1371 | if (intel_dp->num_sink_rates) { | |
1372 | *link_bw = 0; | |
1373 | *rate_select = | |
1374 | intel_dp_rate_select(intel_dp, port_clock); | |
1375 | } else { | |
1376 | *link_bw = drm_dp_link_rate_to_bw_code(port_clock); | |
1377 | *rate_select = 0; | |
1378 | } | |
1379 | } | |
1380 | ||
00c09d70 | 1381 | bool |
5bfe2ac0 | 1382 | intel_dp_compute_config(struct intel_encoder *encoder, |
5cec258b | 1383 | struct intel_crtc_state *pipe_config) |
a4fc5ed6 | 1384 | { |
5bfe2ac0 | 1385 | struct drm_device *dev = encoder->base.dev; |
36008365 | 1386 | struct drm_i915_private *dev_priv = dev->dev_private; |
2d112de7 | 1387 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1388 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1389 | enum port port = dp_to_dig_port(intel_dp)->port; |
84556d58 | 1390 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
dd06f90e | 1391 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1392 | int lane_count, clock; |
56071a20 | 1393 | int min_lane_count = 1; |
eeb6324d | 1394 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1395 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1396 | int min_clock = 0; |
a8f3ef61 | 1397 | int max_clock; |
083f9560 | 1398 | int bpp, mode_rate; |
ff9a6750 | 1399 | int link_avail, link_clock; |
94ca719e VS |
1400 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1401 | int common_len; | |
04a60f9f | 1402 | uint8_t link_bw, rate_select; |
a8f3ef61 | 1403 | |
94ca719e | 1404 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
a8f3ef61 SJ |
1405 | |
1406 | /* No common link rates between source and sink */ | |
94ca719e | 1407 | WARN_ON(common_len <= 0); |
a8f3ef61 | 1408 | |
94ca719e | 1409 | max_clock = common_len - 1; |
a4fc5ed6 | 1410 | |
bc7d38a4 | 1411 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1412 | pipe_config->has_pch_encoder = true; |
1413 | ||
03afc4a2 | 1414 | pipe_config->has_dp_encoder = true; |
f769cd24 | 1415 | pipe_config->has_drrs = false; |
9fcb1704 | 1416 | pipe_config->has_audio = intel_dp->has_audio && port != PORT_A; |
a4fc5ed6 | 1417 | |
dd06f90e JN |
1418 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1419 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1420 | adjusted_mode); | |
a1b2278e CK |
1421 | |
1422 | if (INTEL_INFO(dev)->gen >= 9) { | |
1423 | int ret; | |
e435d6e5 | 1424 | ret = skl_update_scaler_crtc(pipe_config); |
a1b2278e CK |
1425 | if (ret) |
1426 | return ret; | |
1427 | } | |
1428 | ||
2dd24552 JB |
1429 | if (!HAS_PCH_SPLIT(dev)) |
1430 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
1431 | intel_connector->panel.fitting_mode); | |
1432 | else | |
b074cec8 JB |
1433 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1434 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1435 | } |
1436 | ||
cb1793ce | 1437 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1438 | return false; |
1439 | ||
083f9560 | 1440 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 | 1441 | "max bw %d pixel clock %iKHz\n", |
94ca719e | 1442 | max_lane_count, common_rates[max_clock], |
241bfc38 | 1443 | adjusted_mode->crtc_clock); |
083f9560 | 1444 | |
36008365 DV |
1445 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1446 | * bpc in between. */ | |
3e7ca985 | 1447 | bpp = pipe_config->pipe_bpp; |
56071a20 | 1448 | if (is_edp(intel_dp)) { |
22ce5628 TS |
1449 | |
1450 | /* Get bpp from vbt only for panels that dont have bpp in edid */ | |
1451 | if (intel_connector->base.display_info.bpc == 0 && | |
1452 | (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp)) { | |
56071a20 JN |
1453 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", |
1454 | dev_priv->vbt.edp_bpp); | |
1455 | bpp = dev_priv->vbt.edp_bpp; | |
1456 | } | |
1457 | ||
344c5bbc JN |
1458 | /* |
1459 | * Use the maximum clock and number of lanes the eDP panel | |
1460 | * advertizes being capable of. The panels are generally | |
1461 | * designed to support only a single clock and lane | |
1462 | * configuration, and typically these values correspond to the | |
1463 | * native resolution of the panel. | |
1464 | */ | |
1465 | min_lane_count = max_lane_count; | |
1466 | min_clock = max_clock; | |
7984211e | 1467 | } |
657445fe | 1468 | |
36008365 | 1469 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1470 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1471 | bpp); | |
36008365 | 1472 | |
c6930992 | 1473 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1474 | for (lane_count = min_lane_count; |
1475 | lane_count <= max_lane_count; | |
1476 | lane_count <<= 1) { | |
1477 | ||
94ca719e | 1478 | link_clock = common_rates[clock]; |
36008365 DV |
1479 | link_avail = intel_dp_max_data_rate(link_clock, |
1480 | lane_count); | |
1481 | ||
1482 | if (mode_rate <= link_avail) { | |
1483 | goto found; | |
1484 | } | |
1485 | } | |
1486 | } | |
1487 | } | |
c4867936 | 1488 | |
36008365 | 1489 | return false; |
3685a8f3 | 1490 | |
36008365 | 1491 | found: |
55bc60db VS |
1492 | if (intel_dp->color_range_auto) { |
1493 | /* | |
1494 | * See: | |
1495 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1496 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1497 | */ | |
0f2a2a75 VS |
1498 | pipe_config->limited_color_range = |
1499 | bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1; | |
1500 | } else { | |
1501 | pipe_config->limited_color_range = | |
1502 | intel_dp->limited_color_range; | |
55bc60db VS |
1503 | } |
1504 | ||
90a6b7b0 | 1505 | pipe_config->lane_count = lane_count; |
a8f3ef61 | 1506 | |
657445fe | 1507 | pipe_config->pipe_bpp = bpp; |
94ca719e | 1508 | pipe_config->port_clock = common_rates[clock]; |
a4fc5ed6 | 1509 | |
04a60f9f VS |
1510 | intel_dp_compute_rate(intel_dp, pipe_config->port_clock, |
1511 | &link_bw, &rate_select); | |
1512 | ||
1513 | DRM_DEBUG_KMS("DP link bw %02x rate select %02x lane count %d clock %d bpp %d\n", | |
1514 | link_bw, rate_select, pipe_config->lane_count, | |
ff9a6750 | 1515 | pipe_config->port_clock, bpp); |
36008365 DV |
1516 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1517 | mode_rate, link_avail); | |
a4fc5ed6 | 1518 | |
03afc4a2 | 1519 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1520 | adjusted_mode->crtc_clock, |
1521 | pipe_config->port_clock, | |
03afc4a2 | 1522 | &pipe_config->dp_m_n); |
9d1a455b | 1523 | |
439d7ac0 | 1524 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1525 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1526 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1527 | intel_link_compute_m_n(bpp, lane_count, |
1528 | intel_connector->panel.downclock_mode->clock, | |
1529 | pipe_config->port_clock, | |
1530 | &pipe_config->dp_m2_n2); | |
1531 | } | |
1532 | ||
5416d871 | 1533 | if (IS_SKYLAKE(dev) && is_edp(intel_dp)) |
840b32b7 | 1534 | skl_edp_set_pll_config(pipe_config); |
977bb38d S |
1535 | else if (IS_BROXTON(dev)) |
1536 | /* handled in ddi */; | |
5416d871 | 1537 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
840b32b7 | 1538 | hsw_dp_set_ddi_pll_sel(pipe_config); |
0e50338c | 1539 | else |
840b32b7 | 1540 | intel_dp_set_clock(encoder, pipe_config); |
c6bb3538 | 1541 | |
03afc4a2 | 1542 | return true; |
a4fc5ed6 KP |
1543 | } |
1544 | ||
7c62a164 | 1545 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 1546 | { |
7c62a164 DV |
1547 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1548 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1549 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
1550 | struct drm_i915_private *dev_priv = dev->dev_private; |
1551 | u32 dpa_ctl; | |
1552 | ||
6e3c9717 ACO |
1553 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", |
1554 | crtc->config->port_clock); | |
ea9b6006 DV |
1555 | dpa_ctl = I915_READ(DP_A); |
1556 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1557 | ||
6e3c9717 | 1558 | if (crtc->config->port_clock == 162000) { |
1ce17038 DV |
1559 | /* For a long time we've carried around a ILK-DevA w/a for the |
1560 | * 160MHz clock. If we're really unlucky, it's still required. | |
1561 | */ | |
1562 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 1563 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 1564 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
1565 | } else { |
1566 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 1567 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 1568 | } |
1ce17038 | 1569 | |
ea9b6006 DV |
1570 | I915_WRITE(DP_A, dpa_ctl); |
1571 | ||
1572 | POSTING_READ(DP_A); | |
1573 | udelay(500); | |
1574 | } | |
1575 | ||
901c2daf VS |
1576 | void intel_dp_set_link_params(struct intel_dp *intel_dp, |
1577 | const struct intel_crtc_state *pipe_config) | |
1578 | { | |
1579 | intel_dp->link_rate = pipe_config->port_clock; | |
1580 | intel_dp->lane_count = pipe_config->lane_count; | |
1581 | } | |
1582 | ||
8ac33ed3 | 1583 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1584 | { |
b934223d | 1585 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1586 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1587 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1588 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1589 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
7c5f93b0 | 1590 | const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
a4fc5ed6 | 1591 | |
901c2daf VS |
1592 | intel_dp_set_link_params(intel_dp, crtc->config); |
1593 | ||
417e822d | 1594 | /* |
1a2eb460 | 1595 | * There are four kinds of DP registers: |
417e822d KP |
1596 | * |
1597 | * IBX PCH | |
1a2eb460 KP |
1598 | * SNB CPU |
1599 | * IVB CPU | |
417e822d KP |
1600 | * CPT PCH |
1601 | * | |
1602 | * IBX PCH and CPU are the same for almost everything, | |
1603 | * except that the CPU DP PLL is configured in this | |
1604 | * register | |
1605 | * | |
1606 | * CPT PCH is quite different, having many bits moved | |
1607 | * to the TRANS_DP_CTL register instead. That | |
1608 | * configuration happens (oddly) in ironlake_pch_enable | |
1609 | */ | |
9c9e7927 | 1610 | |
417e822d KP |
1611 | /* Preserve the BIOS-computed detected bit. This is |
1612 | * supposed to be read-only. | |
1613 | */ | |
1614 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1615 | |
417e822d | 1616 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1617 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
90a6b7b0 | 1618 | intel_dp->DP |= DP_PORT_WIDTH(crtc->config->lane_count); |
a4fc5ed6 | 1619 | |
6e3c9717 | 1620 | if (crtc->config->has_audio) |
ea5b213a | 1621 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
247d89f6 | 1622 | |
417e822d | 1623 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1624 | |
39e5fa88 | 1625 | if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
1626 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1627 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1628 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1629 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1630 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1631 | ||
6aba5b6c | 1632 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1633 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1634 | ||
7c62a164 | 1635 | intel_dp->DP |= crtc->pipe << 29; |
39e5fa88 | 1636 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
e3ef4479 VS |
1637 | u32 trans_dp; |
1638 | ||
39e5fa88 | 1639 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
e3ef4479 VS |
1640 | |
1641 | trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1642 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
1643 | trans_dp |= TRANS_DP_ENH_FRAMING; | |
1644 | else | |
1645 | trans_dp &= ~TRANS_DP_ENH_FRAMING; | |
1646 | I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp); | |
39e5fa88 | 1647 | } else { |
0f2a2a75 VS |
1648 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
1649 | crtc->config->limited_color_range) | |
1650 | intel_dp->DP |= DP_COLOR_RANGE_16_235; | |
417e822d KP |
1651 | |
1652 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1653 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1654 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1655 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1656 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1657 | ||
6aba5b6c | 1658 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1659 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1660 | ||
39e5fa88 | 1661 | if (IS_CHERRYVIEW(dev)) |
44f37d1f | 1662 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); |
39e5fa88 VS |
1663 | else if (crtc->pipe == PIPE_B) |
1664 | intel_dp->DP |= DP_PIPEB_SELECT; | |
32f9d658 | 1665 | } |
a4fc5ed6 KP |
1666 | } |
1667 | ||
ffd6749d PZ |
1668 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1669 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1670 | |
1a5ef5b7 PZ |
1671 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1672 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1673 | |
ffd6749d PZ |
1674 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1675 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1676 | |
4be73780 | 1677 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1678 | u32 mask, |
1679 | u32 value) | |
bd943159 | 1680 | { |
30add22d | 1681 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1682 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1683 | u32 pp_stat_reg, pp_ctrl_reg; |
1684 | ||
e39b999a VS |
1685 | lockdep_assert_held(&dev_priv->pps_mutex); |
1686 | ||
bf13e81b JN |
1687 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1688 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1689 | |
99ea7127 | 1690 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1691 | mask, value, |
1692 | I915_READ(pp_stat_reg), | |
1693 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1694 | |
453c5420 | 1695 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1696 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1697 | I915_READ(pp_stat_reg), |
1698 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1699 | } |
54c136d4 CW |
1700 | |
1701 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1702 | } |
32ce697c | 1703 | |
4be73780 | 1704 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1705 | { |
1706 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1707 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1708 | } |
1709 | ||
4be73780 | 1710 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1711 | { |
1712 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1713 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1714 | } |
1715 | ||
4be73780 | 1716 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1717 | { |
1718 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1719 | |
1720 | /* When we disable the VDD override bit last we have to do the manual | |
1721 | * wait. */ | |
1722 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1723 | intel_dp->panel_power_cycle_delay); | |
1724 | ||
4be73780 | 1725 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1726 | } |
1727 | ||
4be73780 | 1728 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1729 | { |
1730 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1731 | intel_dp->backlight_on_delay); | |
1732 | } | |
1733 | ||
4be73780 | 1734 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1735 | { |
1736 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1737 | intel_dp->backlight_off_delay); | |
1738 | } | |
99ea7127 | 1739 | |
832dd3c1 KP |
1740 | /* Read the current pp_control value, unlocking the register if it |
1741 | * is locked | |
1742 | */ | |
1743 | ||
453c5420 | 1744 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1745 | { |
453c5420 JB |
1746 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1747 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1748 | u32 control; | |
832dd3c1 | 1749 | |
e39b999a VS |
1750 | lockdep_assert_held(&dev_priv->pps_mutex); |
1751 | ||
bf13e81b | 1752 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
b0a08bec VK |
1753 | if (!IS_BROXTON(dev)) { |
1754 | control &= ~PANEL_UNLOCK_MASK; | |
1755 | control |= PANEL_UNLOCK_REGS; | |
1756 | } | |
832dd3c1 | 1757 | return control; |
bd943159 KP |
1758 | } |
1759 | ||
951468f3 VS |
1760 | /* |
1761 | * Must be paired with edp_panel_vdd_off(). | |
1762 | * Must hold pps_mutex around the whole on/off sequence. | |
1763 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1764 | */ | |
1e0560e0 | 1765 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1766 | { |
30add22d | 1767 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1768 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1769 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1770 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1771 | enum intel_display_power_domain power_domain; |
5d613501 | 1772 | u32 pp; |
453c5420 | 1773 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1774 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1775 | |
e39b999a VS |
1776 | lockdep_assert_held(&dev_priv->pps_mutex); |
1777 | ||
97af61f5 | 1778 | if (!is_edp(intel_dp)) |
adddaaf4 | 1779 | return false; |
bd943159 | 1780 | |
2c623c11 | 1781 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1782 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1783 | |
4be73780 | 1784 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1785 | return need_to_disable; |
b0665d57 | 1786 | |
4e6e1a54 ID |
1787 | power_domain = intel_display_port_power_domain(intel_encoder); |
1788 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1789 | |
3936fcf4 VS |
1790 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1791 | port_name(intel_dig_port->port)); | |
bd943159 | 1792 | |
4be73780 DV |
1793 | if (!edp_have_panel_power(intel_dp)) |
1794 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1795 | |
453c5420 | 1796 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1797 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1798 | |
bf13e81b JN |
1799 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1800 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1801 | |
1802 | I915_WRITE(pp_ctrl_reg, pp); | |
1803 | POSTING_READ(pp_ctrl_reg); | |
1804 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1805 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1806 | /* |
1807 | * If the panel wasn't on, delay before accessing aux channel | |
1808 | */ | |
4be73780 | 1809 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1810 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1811 | port_name(intel_dig_port->port)); | |
f01eca2e | 1812 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1813 | } |
adddaaf4 JN |
1814 | |
1815 | return need_to_disable; | |
1816 | } | |
1817 | ||
951468f3 VS |
1818 | /* |
1819 | * Must be paired with intel_edp_panel_vdd_off() or | |
1820 | * intel_edp_panel_off(). | |
1821 | * Nested calls to these functions are not allowed since | |
1822 | * we drop the lock. Caller must use some higher level | |
1823 | * locking to prevent nested calls from other threads. | |
1824 | */ | |
b80d6c78 | 1825 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1826 | { |
c695b6b6 | 1827 | bool vdd; |
adddaaf4 | 1828 | |
c695b6b6 VS |
1829 | if (!is_edp(intel_dp)) |
1830 | return; | |
1831 | ||
773538e8 | 1832 | pps_lock(intel_dp); |
c695b6b6 | 1833 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1834 | pps_unlock(intel_dp); |
c695b6b6 | 1835 | |
e2c719b7 | 1836 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1837 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1838 | } |
1839 | ||
4be73780 | 1840 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1841 | { |
30add22d | 1842 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 | 1843 | struct drm_i915_private *dev_priv = dev->dev_private; |
be2c9196 VS |
1844 | struct intel_digital_port *intel_dig_port = |
1845 | dp_to_dig_port(intel_dp); | |
1846 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1847 | enum intel_display_power_domain power_domain; | |
5d613501 | 1848 | u32 pp; |
453c5420 | 1849 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1850 | |
e39b999a | 1851 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 1852 | |
15e899a0 | 1853 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 1854 | |
15e899a0 | 1855 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 1856 | return; |
b0665d57 | 1857 | |
3936fcf4 VS |
1858 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
1859 | port_name(intel_dig_port->port)); | |
bd943159 | 1860 | |
be2c9196 VS |
1861 | pp = ironlake_get_pp_control(intel_dp); |
1862 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 1863 | |
be2c9196 VS |
1864 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1865 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 1866 | |
be2c9196 VS |
1867 | I915_WRITE(pp_ctrl_reg, pp); |
1868 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 1869 | |
be2c9196 VS |
1870 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1871 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1872 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 1873 | |
be2c9196 VS |
1874 | if ((pp & POWER_TARGET_ON) == 0) |
1875 | intel_dp->last_power_cycle = jiffies; | |
e9cb81a2 | 1876 | |
be2c9196 VS |
1877 | power_domain = intel_display_port_power_domain(intel_encoder); |
1878 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 | 1879 | } |
5d613501 | 1880 | |
4be73780 | 1881 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1882 | { |
1883 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1884 | struct intel_dp, panel_vdd_work); | |
bd943159 | 1885 | |
773538e8 | 1886 | pps_lock(intel_dp); |
15e899a0 VS |
1887 | if (!intel_dp->want_panel_vdd) |
1888 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 1889 | pps_unlock(intel_dp); |
bd943159 KP |
1890 | } |
1891 | ||
aba86890 ID |
1892 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1893 | { | |
1894 | unsigned long delay; | |
1895 | ||
1896 | /* | |
1897 | * Queue the timer to fire a long time from now (relative to the power | |
1898 | * down delay) to keep the panel power up across a sequence of | |
1899 | * operations. | |
1900 | */ | |
1901 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1902 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1903 | } | |
1904 | ||
951468f3 VS |
1905 | /* |
1906 | * Must be paired with edp_panel_vdd_on(). | |
1907 | * Must hold pps_mutex around the whole on/off sequence. | |
1908 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1909 | */ | |
4be73780 | 1910 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1911 | { |
e39b999a VS |
1912 | struct drm_i915_private *dev_priv = |
1913 | intel_dp_to_dev(intel_dp)->dev_private; | |
1914 | ||
1915 | lockdep_assert_held(&dev_priv->pps_mutex); | |
1916 | ||
97af61f5 KP |
1917 | if (!is_edp(intel_dp)) |
1918 | return; | |
5d613501 | 1919 | |
e2c719b7 | 1920 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 1921 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 1922 | |
bd943159 KP |
1923 | intel_dp->want_panel_vdd = false; |
1924 | ||
aba86890 | 1925 | if (sync) |
4be73780 | 1926 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1927 | else |
1928 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1929 | } |
1930 | ||
9f0fb5be | 1931 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1932 | { |
30add22d | 1933 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1934 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1935 | u32 pp; |
453c5420 | 1936 | u32 pp_ctrl_reg; |
9934c132 | 1937 | |
9f0fb5be VS |
1938 | lockdep_assert_held(&dev_priv->pps_mutex); |
1939 | ||
97af61f5 | 1940 | if (!is_edp(intel_dp)) |
bd943159 | 1941 | return; |
99ea7127 | 1942 | |
3936fcf4 VS |
1943 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
1944 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 1945 | |
e7a89ace VS |
1946 | if (WARN(edp_have_panel_power(intel_dp), |
1947 | "eDP port %c panel power already on\n", | |
1948 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 1949 | return; |
9934c132 | 1950 | |
4be73780 | 1951 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1952 | |
bf13e81b | 1953 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1954 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1955 | if (IS_GEN5(dev)) { |
1956 | /* ILK workaround: disable reset around power sequence */ | |
1957 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1958 | I915_WRITE(pp_ctrl_reg, pp); |
1959 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1960 | } |
37c6c9b0 | 1961 | |
1c0ae80a | 1962 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1963 | if (!IS_GEN5(dev)) |
1964 | pp |= PANEL_POWER_RESET; | |
1965 | ||
453c5420 JB |
1966 | I915_WRITE(pp_ctrl_reg, pp); |
1967 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1968 | |
4be73780 | 1969 | wait_panel_on(intel_dp); |
dce56b3c | 1970 | intel_dp->last_power_on = jiffies; |
9934c132 | 1971 | |
05ce1a49 KP |
1972 | if (IS_GEN5(dev)) { |
1973 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1974 | I915_WRITE(pp_ctrl_reg, pp); |
1975 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1976 | } |
9f0fb5be | 1977 | } |
e39b999a | 1978 | |
9f0fb5be VS |
1979 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
1980 | { | |
1981 | if (!is_edp(intel_dp)) | |
1982 | return; | |
1983 | ||
1984 | pps_lock(intel_dp); | |
1985 | edp_panel_on(intel_dp); | |
773538e8 | 1986 | pps_unlock(intel_dp); |
9934c132 JB |
1987 | } |
1988 | ||
9f0fb5be VS |
1989 | |
1990 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 1991 | { |
4e6e1a54 ID |
1992 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1993 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1994 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1995 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1996 | enum intel_display_power_domain power_domain; |
99ea7127 | 1997 | u32 pp; |
453c5420 | 1998 | u32 pp_ctrl_reg; |
9934c132 | 1999 | |
9f0fb5be VS |
2000 | lockdep_assert_held(&dev_priv->pps_mutex); |
2001 | ||
97af61f5 KP |
2002 | if (!is_edp(intel_dp)) |
2003 | return; | |
37c6c9b0 | 2004 | |
3936fcf4 VS |
2005 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
2006 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 2007 | |
3936fcf4 VS |
2008 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
2009 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 2010 | |
453c5420 | 2011 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
2012 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
2013 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
2014 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
2015 | EDP_BLC_ENABLE); | |
453c5420 | 2016 | |
bf13e81b | 2017 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 2018 | |
849e39f5 PZ |
2019 | intel_dp->want_panel_vdd = false; |
2020 | ||
453c5420 JB |
2021 | I915_WRITE(pp_ctrl_reg, pp); |
2022 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 2023 | |
dce56b3c | 2024 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 2025 | wait_panel_off(intel_dp); |
849e39f5 PZ |
2026 | |
2027 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
2028 | power_domain = intel_display_port_power_domain(intel_encoder); |
2029 | intel_display_power_put(dev_priv, power_domain); | |
9f0fb5be | 2030 | } |
e39b999a | 2031 | |
9f0fb5be VS |
2032 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
2033 | { | |
2034 | if (!is_edp(intel_dp)) | |
2035 | return; | |
e39b999a | 2036 | |
9f0fb5be VS |
2037 | pps_lock(intel_dp); |
2038 | edp_panel_off(intel_dp); | |
773538e8 | 2039 | pps_unlock(intel_dp); |
9934c132 JB |
2040 | } |
2041 | ||
1250d107 JN |
2042 | /* Enable backlight in the panel power control. */ |
2043 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 2044 | { |
da63a9f2 PZ |
2045 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2046 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
2047 | struct drm_i915_private *dev_priv = dev->dev_private; |
2048 | u32 pp; | |
453c5420 | 2049 | u32 pp_ctrl_reg; |
32f9d658 | 2050 | |
01cb9ea6 JB |
2051 | /* |
2052 | * If we enable the backlight right away following a panel power | |
2053 | * on, we may see slight flicker as the panel syncs with the eDP | |
2054 | * link. So delay a bit to make sure the image is solid before | |
2055 | * allowing it to appear. | |
2056 | */ | |
4be73780 | 2057 | wait_backlight_on(intel_dp); |
e39b999a | 2058 | |
773538e8 | 2059 | pps_lock(intel_dp); |
e39b999a | 2060 | |
453c5420 | 2061 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2062 | pp |= EDP_BLC_ENABLE; |
453c5420 | 2063 | |
bf13e81b | 2064 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2065 | |
2066 | I915_WRITE(pp_ctrl_reg, pp); | |
2067 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 2068 | |
773538e8 | 2069 | pps_unlock(intel_dp); |
32f9d658 ZW |
2070 | } |
2071 | ||
1250d107 JN |
2072 | /* Enable backlight PWM and backlight PP control. */ |
2073 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
2074 | { | |
2075 | if (!is_edp(intel_dp)) | |
2076 | return; | |
2077 | ||
2078 | DRM_DEBUG_KMS("\n"); | |
2079 | ||
2080 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
2081 | _intel_edp_backlight_on(intel_dp); | |
2082 | } | |
2083 | ||
2084 | /* Disable backlight in the panel power control. */ | |
2085 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 2086 | { |
30add22d | 2087 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
2088 | struct drm_i915_private *dev_priv = dev->dev_private; |
2089 | u32 pp; | |
453c5420 | 2090 | u32 pp_ctrl_reg; |
32f9d658 | 2091 | |
f01eca2e KP |
2092 | if (!is_edp(intel_dp)) |
2093 | return; | |
2094 | ||
773538e8 | 2095 | pps_lock(intel_dp); |
e39b999a | 2096 | |
453c5420 | 2097 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2098 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 2099 | |
bf13e81b | 2100 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2101 | |
2102 | I915_WRITE(pp_ctrl_reg, pp); | |
2103 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 2104 | |
773538e8 | 2105 | pps_unlock(intel_dp); |
e39b999a VS |
2106 | |
2107 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 2108 | edp_wait_backlight_off(intel_dp); |
1250d107 | 2109 | } |
f7d2323c | 2110 | |
1250d107 JN |
2111 | /* Disable backlight PP control and backlight PWM. */ |
2112 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
2113 | { | |
2114 | if (!is_edp(intel_dp)) | |
2115 | return; | |
2116 | ||
2117 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 2118 | |
1250d107 | 2119 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 2120 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 2121 | } |
a4fc5ed6 | 2122 | |
73580fb7 JN |
2123 | /* |
2124 | * Hook for controlling the panel power control backlight through the bl_power | |
2125 | * sysfs attribute. Take care to handle multiple calls. | |
2126 | */ | |
2127 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
2128 | bool enable) | |
2129 | { | |
2130 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
2131 | bool is_enabled; |
2132 | ||
773538e8 | 2133 | pps_lock(intel_dp); |
e39b999a | 2134 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 2135 | pps_unlock(intel_dp); |
73580fb7 JN |
2136 | |
2137 | if (is_enabled == enable) | |
2138 | return; | |
2139 | ||
23ba9373 JN |
2140 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2141 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2142 | |
2143 | if (enable) | |
2144 | _intel_edp_backlight_on(intel_dp); | |
2145 | else | |
2146 | _intel_edp_backlight_off(intel_dp); | |
2147 | } | |
2148 | ||
2bd2ad64 | 2149 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 2150 | { |
da63a9f2 PZ |
2151 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2152 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2153 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2154 | struct drm_i915_private *dev_priv = dev->dev_private; |
2155 | u32 dpa_ctl; | |
2156 | ||
2bd2ad64 DV |
2157 | assert_pipe_disabled(dev_priv, |
2158 | to_intel_crtc(crtc)->pipe); | |
2159 | ||
d240f20f JB |
2160 | DRM_DEBUG_KMS("\n"); |
2161 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
2162 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
2163 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2164 | ||
2165 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
2166 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
2167 | * enable bits here to ensure that we don't enable too much. */ | |
2168 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
2169 | intel_dp->DP |= DP_PLL_ENABLE; | |
2170 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
2171 | POSTING_READ(DP_A); |
2172 | udelay(200); | |
d240f20f JB |
2173 | } |
2174 | ||
2bd2ad64 | 2175 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2176 | { |
da63a9f2 PZ |
2177 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2178 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
2179 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
2180 | struct drm_i915_private *dev_priv = dev->dev_private; |
2181 | u32 dpa_ctl; | |
2182 | ||
2bd2ad64 DV |
2183 | assert_pipe_disabled(dev_priv, |
2184 | to_intel_crtc(crtc)->pipe); | |
2185 | ||
d240f20f | 2186 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
2187 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
2188 | "dp pll off, should be on\n"); | |
2189 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
2190 | ||
2191 | /* We can't rely on the value tracked for the DP register in | |
2192 | * intel_dp->DP because link_down must not change that (otherwise link | |
2193 | * re-training will fail. */ | |
298b0b39 | 2194 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 2195 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 2196 | POSTING_READ(DP_A); |
d240f20f JB |
2197 | udelay(200); |
2198 | } | |
2199 | ||
c7ad3810 | 2200 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2201 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2202 | { |
2203 | int ret, i; | |
2204 | ||
2205 | /* Should have a valid DPCD by this point */ | |
2206 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2207 | return; | |
2208 | ||
2209 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2210 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2211 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2212 | } else { |
2213 | /* | |
2214 | * When turning on, we need to retry for 1ms to give the sink | |
2215 | * time to wake up. | |
2216 | */ | |
2217 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2218 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2219 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2220 | if (ret == 1) |
2221 | break; | |
2222 | msleep(1); | |
2223 | } | |
2224 | } | |
f9cac721 JN |
2225 | |
2226 | if (ret != 1) | |
2227 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2228 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2229 | } |
2230 | ||
19d8fe15 DV |
2231 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2232 | enum pipe *pipe) | |
d240f20f | 2233 | { |
19d8fe15 | 2234 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2235 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
2236 | struct drm_device *dev = encoder->base.dev; |
2237 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
2238 | enum intel_display_power_domain power_domain; |
2239 | u32 tmp; | |
2240 | ||
2241 | power_domain = intel_display_port_power_domain(encoder); | |
f458ebbc | 2242 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
2243 | return false; |
2244 | ||
2245 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
2246 | |
2247 | if (!(tmp & DP_PORT_EN)) | |
2248 | return false; | |
2249 | ||
39e5fa88 | 2250 | if (IS_GEN7(dev) && port == PORT_A) { |
19d8fe15 | 2251 | *pipe = PORT_TO_PIPE_CPT(tmp); |
39e5fa88 | 2252 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
adc289d7 | 2253 | enum pipe p; |
19d8fe15 | 2254 | |
adc289d7 VS |
2255 | for_each_pipe(dev_priv, p) { |
2256 | u32 trans_dp = I915_READ(TRANS_DP_CTL(p)); | |
2257 | if (TRANS_DP_PIPE_TO_PORT(trans_dp) == port) { | |
2258 | *pipe = p; | |
19d8fe15 DV |
2259 | return true; |
2260 | } | |
2261 | } | |
19d8fe15 | 2262 | |
4a0833ec DV |
2263 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
2264 | intel_dp->output_reg); | |
39e5fa88 VS |
2265 | } else if (IS_CHERRYVIEW(dev)) { |
2266 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
2267 | } else { | |
2268 | *pipe = PORT_TO_PIPE(tmp); | |
4a0833ec | 2269 | } |
d240f20f | 2270 | |
19d8fe15 DV |
2271 | return true; |
2272 | } | |
d240f20f | 2273 | |
045ac3b5 | 2274 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2275 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2276 | { |
2277 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2278 | u32 tmp, flags = 0; |
63000ef6 XZ |
2279 | struct drm_device *dev = encoder->base.dev; |
2280 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2281 | enum port port = dp_to_dig_port(intel_dp)->port; | |
2282 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 2283 | int dotclock; |
045ac3b5 | 2284 | |
9ed109a7 | 2285 | tmp = I915_READ(intel_dp->output_reg); |
9fcb1704 JN |
2286 | |
2287 | pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A; | |
9ed109a7 | 2288 | |
39e5fa88 | 2289 | if (HAS_PCH_CPT(dev) && port != PORT_A) { |
b81e34c2 VS |
2290 | u32 trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
2291 | ||
2292 | if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
63000ef6 XZ |
2293 | flags |= DRM_MODE_FLAG_PHSYNC; |
2294 | else | |
2295 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2296 | |
b81e34c2 | 2297 | if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
63000ef6 XZ |
2298 | flags |= DRM_MODE_FLAG_PVSYNC; |
2299 | else | |
2300 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2301 | } else { | |
39e5fa88 | 2302 | if (tmp & DP_SYNC_HS_HIGH) |
63000ef6 XZ |
2303 | flags |= DRM_MODE_FLAG_PHSYNC; |
2304 | else | |
2305 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2306 | |
39e5fa88 | 2307 | if (tmp & DP_SYNC_VS_HIGH) |
63000ef6 XZ |
2308 | flags |= DRM_MODE_FLAG_PVSYNC; |
2309 | else | |
2310 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2311 | } | |
045ac3b5 | 2312 | |
2d112de7 | 2313 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2314 | |
8c875fca VS |
2315 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
2316 | tmp & DP_COLOR_RANGE_16_235) | |
2317 | pipe_config->limited_color_range = true; | |
2318 | ||
eb14cb74 VS |
2319 | pipe_config->has_dp_encoder = true; |
2320 | ||
90a6b7b0 VS |
2321 | pipe_config->lane_count = |
2322 | ((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1; | |
2323 | ||
eb14cb74 VS |
2324 | intel_dp_get_m_n(crtc, pipe_config); |
2325 | ||
18442d08 | 2326 | if (port == PORT_A) { |
f1f644dc JB |
2327 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
2328 | pipe_config->port_clock = 162000; | |
2329 | else | |
2330 | pipe_config->port_clock = 270000; | |
2331 | } | |
18442d08 VS |
2332 | |
2333 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
2334 | &pipe_config->dp_m_n); | |
2335 | ||
2336 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
2337 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
2338 | ||
2d112de7 | 2339 | pipe_config->base.adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 2340 | |
c6cd2ee2 JN |
2341 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
2342 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
2343 | /* | |
2344 | * This is a big fat ugly hack. | |
2345 | * | |
2346 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2347 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2348 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2349 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2350 | * max, not what it tells us to use. | |
2351 | * | |
2352 | * Note: This will still be broken if the eDP panel is not lit | |
2353 | * up by the BIOS, and thus we can't get the mode at module | |
2354 | * load. | |
2355 | */ | |
2356 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
2357 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
2358 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
2359 | } | |
045ac3b5 JB |
2360 | } |
2361 | ||
e8cb4558 | 2362 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2363 | { |
e8cb4558 | 2364 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2365 | struct drm_device *dev = encoder->base.dev; |
495a5bb8 JN |
2366 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
2367 | ||
6e3c9717 | 2368 | if (crtc->config->has_audio) |
495a5bb8 | 2369 | intel_audio_codec_disable(encoder); |
6cb49835 | 2370 | |
b32c6f48 RV |
2371 | if (HAS_PSR(dev) && !HAS_DDI(dev)) |
2372 | intel_psr_disable(intel_dp); | |
2373 | ||
6cb49835 DV |
2374 | /* Make sure the panel is off before trying to change the mode. But also |
2375 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2376 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2377 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2378 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2379 | intel_edp_panel_off(intel_dp); |
3739850b | 2380 | |
08aff3fe VS |
2381 | /* disable the port before the pipe on g4x */ |
2382 | if (INTEL_INFO(dev)->gen < 5) | |
3739850b | 2383 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2384 | } |
2385 | ||
08aff3fe | 2386 | static void ilk_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2387 | { |
2bd2ad64 | 2388 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2389 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2390 | |
49277c31 | 2391 | intel_dp_link_down(intel_dp); |
08aff3fe VS |
2392 | if (port == PORT_A) |
2393 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2394 | } |
2395 | ||
2396 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2397 | { | |
2398 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2399 | ||
2400 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2401 | } |
2402 | ||
a8f327fb VS |
2403 | static void chv_data_lane_soft_reset(struct intel_encoder *encoder, |
2404 | bool reset) | |
580d3811 | 2405 | { |
a8f327fb VS |
2406 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
2407 | enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(&encoder->base)); | |
2408 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
2409 | enum pipe pipe = crtc->pipe; | |
2410 | uint32_t val; | |
580d3811 | 2411 | |
a8f327fb VS |
2412 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); |
2413 | if (reset) | |
2414 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2415 | else | |
2416 | val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET; | |
2417 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
580d3811 | 2418 | |
a8f327fb VS |
2419 | if (crtc->config->lane_count > 2) { |
2420 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
2421 | if (reset) | |
2422 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2423 | else | |
2424 | val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET; | |
2425 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); | |
2426 | } | |
580d3811 | 2427 | |
97fd4d5c | 2428 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2429 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
a8f327fb VS |
2430 | if (reset) |
2431 | val &= ~DPIO_PCS_CLK_SOFT_RESET; | |
2432 | else | |
2433 | val |= DPIO_PCS_CLK_SOFT_RESET; | |
97fd4d5c | 2434 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2435 | |
a8f327fb | 2436 | if (crtc->config->lane_count > 2) { |
e0fce78f VS |
2437 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2438 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
a8f327fb VS |
2439 | if (reset) |
2440 | val &= ~DPIO_PCS_CLK_SOFT_RESET; | |
2441 | else | |
2442 | val |= DPIO_PCS_CLK_SOFT_RESET; | |
e0fce78f VS |
2443 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); |
2444 | } | |
a8f327fb | 2445 | } |
97fd4d5c | 2446 | |
a8f327fb VS |
2447 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2448 | { | |
2449 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2450 | struct drm_device *dev = encoder->base.dev; | |
2451 | struct drm_i915_private *dev_priv = dev->dev_private; | |
97fd4d5c | 2452 | |
a8f327fb VS |
2453 | intel_dp_link_down(intel_dp); |
2454 | ||
2455 | mutex_lock(&dev_priv->sb_lock); | |
2456 | ||
2457 | /* Assert data lane reset */ | |
2458 | chv_data_lane_soft_reset(encoder, true); | |
580d3811 | 2459 | |
a580516d | 2460 | mutex_unlock(&dev_priv->sb_lock); |
580d3811 VS |
2461 | } |
2462 | ||
7b13b58a VS |
2463 | static void |
2464 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2465 | uint32_t *DP, | |
2466 | uint8_t dp_train_pat) | |
2467 | { | |
2468 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2469 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2470 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2471 | enum port port = intel_dig_port->port; | |
2472 | ||
2473 | if (HAS_DDI(dev)) { | |
2474 | uint32_t temp = I915_READ(DP_TP_CTL(port)); | |
2475 | ||
2476 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2477 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2478 | else | |
2479 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2480 | ||
2481 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2482 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2483 | case DP_TRAINING_PATTERN_DISABLE: | |
2484 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2485 | ||
2486 | break; | |
2487 | case DP_TRAINING_PATTERN_1: | |
2488 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2489 | break; | |
2490 | case DP_TRAINING_PATTERN_2: | |
2491 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2492 | break; | |
2493 | case DP_TRAINING_PATTERN_3: | |
2494 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2495 | break; | |
2496 | } | |
2497 | I915_WRITE(DP_TP_CTL(port), temp); | |
2498 | ||
39e5fa88 VS |
2499 | } else if ((IS_GEN7(dev) && port == PORT_A) || |
2500 | (HAS_PCH_CPT(dev) && port != PORT_A)) { | |
7b13b58a VS |
2501 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
2502 | ||
2503 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2504 | case DP_TRAINING_PATTERN_DISABLE: | |
2505 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2506 | break; | |
2507 | case DP_TRAINING_PATTERN_1: | |
2508 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2509 | break; | |
2510 | case DP_TRAINING_PATTERN_2: | |
2511 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2512 | break; | |
2513 | case DP_TRAINING_PATTERN_3: | |
2514 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2515 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2516 | break; | |
2517 | } | |
2518 | ||
2519 | } else { | |
2520 | if (IS_CHERRYVIEW(dev)) | |
2521 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2522 | else | |
2523 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2524 | ||
2525 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2526 | case DP_TRAINING_PATTERN_DISABLE: | |
2527 | *DP |= DP_LINK_TRAIN_OFF; | |
2528 | break; | |
2529 | case DP_TRAINING_PATTERN_1: | |
2530 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2531 | break; | |
2532 | case DP_TRAINING_PATTERN_2: | |
2533 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2534 | break; | |
2535 | case DP_TRAINING_PATTERN_3: | |
2536 | if (IS_CHERRYVIEW(dev)) { | |
2537 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2538 | } else { | |
2539 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2540 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2541 | } | |
2542 | break; | |
2543 | } | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | static void intel_dp_enable_port(struct intel_dp *intel_dp) | |
2548 | { | |
2549 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2550 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2551 | ||
7b13b58a VS |
2552 | /* enable with pattern 1 (as per spec) */ |
2553 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, | |
2554 | DP_TRAINING_PATTERN_1); | |
2555 | ||
2556 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2557 | POSTING_READ(intel_dp->output_reg); | |
7b713f50 VS |
2558 | |
2559 | /* | |
2560 | * Magic for VLV/CHV. We _must_ first set up the register | |
2561 | * without actually enabling the port, and then do another | |
2562 | * write to enable the port. Otherwise link training will | |
2563 | * fail when the power sequencer is freshly used for this port. | |
2564 | */ | |
2565 | intel_dp->DP |= DP_PORT_EN; | |
2566 | ||
2567 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2568 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2569 | } |
2570 | ||
e8cb4558 | 2571 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2572 | { |
e8cb4558 DV |
2573 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2574 | struct drm_device *dev = encoder->base.dev; | |
2575 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1dec79a | 2576 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2577 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
5d613501 | 2578 | |
0c33d8d7 DV |
2579 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2580 | return; | |
5d613501 | 2581 | |
093e3f13 VS |
2582 | pps_lock(intel_dp); |
2583 | ||
2584 | if (IS_VALLEYVIEW(dev)) | |
2585 | vlv_init_panel_power_sequencer(intel_dp); | |
2586 | ||
7b13b58a | 2587 | intel_dp_enable_port(intel_dp); |
093e3f13 VS |
2588 | |
2589 | edp_panel_vdd_on(intel_dp); | |
2590 | edp_panel_on(intel_dp); | |
2591 | edp_panel_vdd_off(intel_dp, true); | |
2592 | ||
2593 | pps_unlock(intel_dp); | |
2594 | ||
e0fce78f VS |
2595 | if (IS_VALLEYVIEW(dev)) { |
2596 | unsigned int lane_mask = 0x0; | |
2597 | ||
2598 | if (IS_CHERRYVIEW(dev)) | |
2599 | lane_mask = intel_dp_unused_lane_mask(crtc->config->lane_count); | |
2600 | ||
9b6de0a1 VS |
2601 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp), |
2602 | lane_mask); | |
e0fce78f | 2603 | } |
61234fa5 | 2604 | |
f01eca2e | 2605 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2606 | intel_dp_start_link_train(intel_dp); |
3ab9c637 | 2607 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2608 | |
6e3c9717 | 2609 | if (crtc->config->has_audio) { |
c1dec79a JN |
2610 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
2611 | pipe_name(crtc->pipe)); | |
2612 | intel_audio_codec_enable(encoder); | |
2613 | } | |
ab1f90f9 | 2614 | } |
89b667f8 | 2615 | |
ecff4f3b JN |
2616 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2617 | { | |
828f5c6e JN |
2618 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2619 | ||
ecff4f3b | 2620 | intel_enable_dp(encoder); |
4be73780 | 2621 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2622 | } |
89b667f8 | 2623 | |
ab1f90f9 JN |
2624 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2625 | { | |
828f5c6e JN |
2626 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2627 | ||
4be73780 | 2628 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2629 | intel_psr_enable(intel_dp); |
d240f20f JB |
2630 | } |
2631 | ||
ecff4f3b | 2632 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2633 | { |
2634 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2635 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2636 | ||
8ac33ed3 DV |
2637 | intel_dp_prepare(encoder); |
2638 | ||
d41f1efb DV |
2639 | /* Only ilk+ has port A */ |
2640 | if (dport->port == PORT_A) { | |
2641 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2642 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2643 | } |
ab1f90f9 JN |
2644 | } |
2645 | ||
83b84597 VS |
2646 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2647 | { | |
2648 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2649 | struct drm_i915_private *dev_priv = intel_dig_port->base.base.dev->dev_private; | |
2650 | enum pipe pipe = intel_dp->pps_pipe; | |
2651 | int pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
2652 | ||
2653 | edp_panel_vdd_off_sync(intel_dp); | |
2654 | ||
2655 | /* | |
2656 | * VLV seems to get confused when multiple power seqeuencers | |
2657 | * have the same port selected (even if only one has power/vdd | |
2658 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2659 | * CHV on the other hand doesn't seem to mind having the same port | |
2660 | * selected in multiple power seqeuencers, but let's clear the | |
2661 | * port select always when logically disconnecting a power sequencer | |
2662 | * from a port. | |
2663 | */ | |
2664 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2665 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2666 | I915_WRITE(pp_on_reg, 0); | |
2667 | POSTING_READ(pp_on_reg); | |
2668 | ||
2669 | intel_dp->pps_pipe = INVALID_PIPE; | |
2670 | } | |
2671 | ||
a4a5d2f8 VS |
2672 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2673 | enum pipe pipe) | |
2674 | { | |
2675 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2676 | struct intel_encoder *encoder; | |
2677 | ||
2678 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2679 | ||
ac3c12e4 VS |
2680 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2681 | return; | |
2682 | ||
a4a5d2f8 VS |
2683 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, |
2684 | base.head) { | |
2685 | struct intel_dp *intel_dp; | |
773538e8 | 2686 | enum port port; |
a4a5d2f8 VS |
2687 | |
2688 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2689 | continue; | |
2690 | ||
2691 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2692 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2693 | |
2694 | if (intel_dp->pps_pipe != pipe) | |
2695 | continue; | |
2696 | ||
2697 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2698 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2699 | |
e02f9a06 | 2700 | WARN(encoder->base.crtc, |
034e43c6 VS |
2701 | "stealing pipe %c power sequencer from active eDP port %c\n", |
2702 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2703 | |
a4a5d2f8 | 2704 | /* make sure vdd is off before we steal it */ |
83b84597 | 2705 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2706 | } |
2707 | } | |
2708 | ||
2709 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2710 | { | |
2711 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2712 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2713 | struct drm_device *dev = encoder->base.dev; | |
2714 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2715 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
a4a5d2f8 VS |
2716 | |
2717 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2718 | ||
093e3f13 VS |
2719 | if (!is_edp(intel_dp)) |
2720 | return; | |
2721 | ||
a4a5d2f8 VS |
2722 | if (intel_dp->pps_pipe == crtc->pipe) |
2723 | return; | |
2724 | ||
2725 | /* | |
2726 | * If another power sequencer was being used on this | |
2727 | * port previously make sure to turn off vdd there while | |
2728 | * we still have control of it. | |
2729 | */ | |
2730 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2731 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2732 | |
2733 | /* | |
2734 | * We may be stealing the power | |
2735 | * sequencer from another port. | |
2736 | */ | |
2737 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2738 | ||
2739 | /* now it's all ours */ | |
2740 | intel_dp->pps_pipe = crtc->pipe; | |
2741 | ||
2742 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2743 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2744 | ||
2745 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2746 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2747 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2748 | } |
2749 | ||
ab1f90f9 | 2750 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 2751 | { |
2bd2ad64 | 2752 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2753 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2754 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2755 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2756 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2757 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 JN |
2758 | int pipe = intel_crtc->pipe; |
2759 | u32 val; | |
a4fc5ed6 | 2760 | |
a580516d | 2761 | mutex_lock(&dev_priv->sb_lock); |
89b667f8 | 2762 | |
ab3c759a | 2763 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2764 | val = 0; |
2765 | if (pipe) | |
2766 | val |= (1<<21); | |
2767 | else | |
2768 | val &= ~(1<<21); | |
2769 | val |= 0x001000c4; | |
ab3c759a CML |
2770 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2771 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2772 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2773 | |
a580516d | 2774 | mutex_unlock(&dev_priv->sb_lock); |
ab1f90f9 JN |
2775 | |
2776 | intel_enable_dp(encoder); | |
89b667f8 JB |
2777 | } |
2778 | ||
ecff4f3b | 2779 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2780 | { |
2781 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2782 | struct drm_device *dev = encoder->base.dev; | |
2783 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2784 | struct intel_crtc *intel_crtc = |
2785 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2786 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2787 | int pipe = intel_crtc->pipe; |
89b667f8 | 2788 | |
8ac33ed3 DV |
2789 | intel_dp_prepare(encoder); |
2790 | ||
89b667f8 | 2791 | /* Program Tx lane resets to default */ |
a580516d | 2792 | mutex_lock(&dev_priv->sb_lock); |
ab3c759a | 2793 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2794 | DPIO_PCS_TX_LANE2_RESET | |
2795 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2796 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2797 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2798 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2799 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2800 | DPIO_PCS_CLK_SOFT_RESET); | |
2801 | ||
2802 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2803 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2804 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2805 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
a580516d | 2806 | mutex_unlock(&dev_priv->sb_lock); |
a4fc5ed6 KP |
2807 | } |
2808 | ||
e4a1d846 CML |
2809 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2810 | { | |
2811 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2812 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2813 | struct drm_device *dev = encoder->base.dev; | |
2814 | struct drm_i915_private *dev_priv = dev->dev_private; | |
e4a1d846 CML |
2815 | struct intel_crtc *intel_crtc = |
2816 | to_intel_crtc(encoder->base.crtc); | |
2817 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2818 | int pipe = intel_crtc->pipe; | |
2e523e98 | 2819 | int data, i, stagger; |
949c1d43 | 2820 | u32 val; |
e4a1d846 | 2821 | |
a580516d | 2822 | mutex_lock(&dev_priv->sb_lock); |
949c1d43 | 2823 | |
570e2a74 VS |
2824 | /* allow hardware to manage TX FIFO reset source */ |
2825 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2826 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2827 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2828 | ||
e0fce78f VS |
2829 | if (intel_crtc->config->lane_count > 2) { |
2830 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2831 | val &= ~DPIO_LANEDESKEW_STRAP_OVRD; | |
2832 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2833 | } | |
570e2a74 | 2834 | |
949c1d43 | 2835 | /* Program Tx lane latency optimal setting*/ |
e0fce78f | 2836 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
e4a1d846 | 2837 | /* Set the upar bit */ |
e0fce78f VS |
2838 | if (intel_crtc->config->lane_count == 1) |
2839 | data = 0x0; | |
2840 | else | |
2841 | data = (i == 1) ? 0x0 : 0x1; | |
e4a1d846 CML |
2842 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), |
2843 | data << DPIO_UPAR_SHIFT); | |
2844 | } | |
2845 | ||
2846 | /* Data lane stagger programming */ | |
2e523e98 VS |
2847 | if (intel_crtc->config->port_clock > 270000) |
2848 | stagger = 0x18; | |
2849 | else if (intel_crtc->config->port_clock > 135000) | |
2850 | stagger = 0xd; | |
2851 | else if (intel_crtc->config->port_clock > 67500) | |
2852 | stagger = 0x7; | |
2853 | else if (intel_crtc->config->port_clock > 33750) | |
2854 | stagger = 0x4; | |
2855 | else | |
2856 | stagger = 0x2; | |
2857 | ||
2858 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch)); | |
2859 | val |= DPIO_TX2_STAGGER_MASK(0x1f); | |
2860 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val); | |
2861 | ||
e0fce78f VS |
2862 | if (intel_crtc->config->lane_count > 2) { |
2863 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch)); | |
2864 | val |= DPIO_TX2_STAGGER_MASK(0x1f); | |
2865 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val); | |
2866 | } | |
2e523e98 VS |
2867 | |
2868 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch), | |
2869 | DPIO_LANESTAGGER_STRAP(stagger) | | |
2870 | DPIO_LANESTAGGER_STRAP_OVRD | | |
2871 | DPIO_TX1_STAGGER_MASK(0x1f) | | |
2872 | DPIO_TX1_STAGGER_MULT(6) | | |
2873 | DPIO_TX2_STAGGER_MULT(0)); | |
2874 | ||
e0fce78f VS |
2875 | if (intel_crtc->config->lane_count > 2) { |
2876 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch), | |
2877 | DPIO_LANESTAGGER_STRAP(stagger) | | |
2878 | DPIO_LANESTAGGER_STRAP_OVRD | | |
2879 | DPIO_TX1_STAGGER_MASK(0x1f) | | |
2880 | DPIO_TX1_STAGGER_MULT(7) | | |
2881 | DPIO_TX2_STAGGER_MULT(5)); | |
2882 | } | |
e4a1d846 | 2883 | |
a8f327fb VS |
2884 | /* Deassert data lane reset */ |
2885 | chv_data_lane_soft_reset(encoder, false); | |
2886 | ||
a580516d | 2887 | mutex_unlock(&dev_priv->sb_lock); |
e4a1d846 | 2888 | |
e4a1d846 | 2889 | intel_enable_dp(encoder); |
b0b33846 VS |
2890 | |
2891 | /* Second common lane will stay alive on its own now */ | |
2892 | if (dport->release_cl2_override) { | |
2893 | chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, false); | |
2894 | dport->release_cl2_override = false; | |
2895 | } | |
e4a1d846 CML |
2896 | } |
2897 | ||
9197c88b VS |
2898 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2899 | { | |
2900 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2901 | struct drm_device *dev = encoder->base.dev; | |
2902 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2903 | struct intel_crtc *intel_crtc = | |
2904 | to_intel_crtc(encoder->base.crtc); | |
2905 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2906 | enum pipe pipe = intel_crtc->pipe; | |
e0fce78f VS |
2907 | unsigned int lane_mask = |
2908 | intel_dp_unused_lane_mask(intel_crtc->config->lane_count); | |
9197c88b VS |
2909 | u32 val; |
2910 | ||
625695f8 VS |
2911 | intel_dp_prepare(encoder); |
2912 | ||
b0b33846 VS |
2913 | /* |
2914 | * Must trick the second common lane into life. | |
2915 | * Otherwise we can't even access the PLL. | |
2916 | */ | |
2917 | if (ch == DPIO_CH0 && pipe == PIPE_B) | |
2918 | dport->release_cl2_override = | |
2919 | !chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, true); | |
2920 | ||
e0fce78f VS |
2921 | chv_phy_powergate_lanes(encoder, true, lane_mask); |
2922 | ||
a580516d | 2923 | mutex_lock(&dev_priv->sb_lock); |
9197c88b | 2924 | |
a8f327fb VS |
2925 | /* Assert data lane reset */ |
2926 | chv_data_lane_soft_reset(encoder, true); | |
2927 | ||
b9e5ac3c VS |
2928 | /* program left/right clock distribution */ |
2929 | if (pipe != PIPE_B) { | |
2930 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2931 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2932 | if (ch == DPIO_CH0) | |
2933 | val |= CHV_BUFLEFTENA1_FORCE; | |
2934 | if (ch == DPIO_CH1) | |
2935 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2936 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2937 | } else { | |
2938 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2939 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2940 | if (ch == DPIO_CH0) | |
2941 | val |= CHV_BUFLEFTENA2_FORCE; | |
2942 | if (ch == DPIO_CH1) | |
2943 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2944 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2945 | } | |
2946 | ||
9197c88b VS |
2947 | /* program clock channel usage */ |
2948 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2949 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2950 | if (pipe != PIPE_B) | |
2951 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2952 | else | |
2953 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2954 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2955 | ||
e0fce78f VS |
2956 | if (intel_crtc->config->lane_count > 2) { |
2957 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2958 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2959 | if (pipe != PIPE_B) | |
2960 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2961 | else | |
2962 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2963 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2964 | } | |
9197c88b VS |
2965 | |
2966 | /* | |
2967 | * This a a bit weird since generally CL | |
2968 | * matches the pipe, but here we need to | |
2969 | * pick the CL based on the port. | |
2970 | */ | |
2971 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2972 | if (pipe != PIPE_B) | |
2973 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2974 | else | |
2975 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2976 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2977 | ||
a580516d | 2978 | mutex_unlock(&dev_priv->sb_lock); |
9197c88b VS |
2979 | } |
2980 | ||
d6db995f VS |
2981 | static void chv_dp_post_pll_disable(struct intel_encoder *encoder) |
2982 | { | |
2983 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); | |
2984 | enum pipe pipe = to_intel_crtc(encoder->base.crtc)->pipe; | |
2985 | u32 val; | |
2986 | ||
2987 | mutex_lock(&dev_priv->sb_lock); | |
2988 | ||
2989 | /* disable left/right clock distribution */ | |
2990 | if (pipe != PIPE_B) { | |
2991 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2992 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2993 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2994 | } else { | |
2995 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2996 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2997 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2998 | } | |
2999 | ||
3000 | mutex_unlock(&dev_priv->sb_lock); | |
e0fce78f | 3001 | |
b0b33846 VS |
3002 | /* |
3003 | * Leave the power down bit cleared for at least one | |
3004 | * lane so that chv_powergate_phy_ch() will power | |
3005 | * on something when the channel is otherwise unused. | |
3006 | * When the port is off and the override is removed | |
3007 | * the lanes power down anyway, so otherwise it doesn't | |
3008 | * really matter what the state of power down bits is | |
3009 | * after this. | |
3010 | */ | |
e0fce78f | 3011 | chv_phy_powergate_lanes(encoder, false, 0x0); |
d6db995f VS |
3012 | } |
3013 | ||
a4fc5ed6 | 3014 | /* |
df0c237d JB |
3015 | * Native read with retry for link status and receiver capability reads for |
3016 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
3017 | * |
3018 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
3019 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 3020 | */ |
9d1a1031 JN |
3021 | static ssize_t |
3022 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
3023 | void *buffer, size_t size) | |
a4fc5ed6 | 3024 | { |
9d1a1031 JN |
3025 | ssize_t ret; |
3026 | int i; | |
61da5fab | 3027 | |
f6a19066 VS |
3028 | /* |
3029 | * Sometime we just get the same incorrect byte repeated | |
3030 | * over the entire buffer. Doing just one throw away read | |
3031 | * initially seems to "solve" it. | |
3032 | */ | |
3033 | drm_dp_dpcd_read(aux, DP_DPCD_REV, buffer, 1); | |
3034 | ||
61da5fab | 3035 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
3036 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
3037 | if (ret == size) | |
3038 | return ret; | |
61da5fab JB |
3039 | msleep(1); |
3040 | } | |
a4fc5ed6 | 3041 | |
9d1a1031 | 3042 | return ret; |
a4fc5ed6 KP |
3043 | } |
3044 | ||
3045 | /* | |
3046 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
3047 | * link status information | |
3048 | */ | |
3049 | static bool | |
93f62dad | 3050 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 3051 | { |
9d1a1031 JN |
3052 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3053 | DP_LANE0_1_STATUS, | |
3054 | link_status, | |
3055 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
3056 | } |
3057 | ||
1100244e | 3058 | /* These are source-specific values. */ |
a4fc5ed6 | 3059 | static uint8_t |
1a2eb460 | 3060 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 3061 | { |
30add22d | 3062 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
7ad14a29 | 3063 | struct drm_i915_private *dev_priv = dev->dev_private; |
bc7d38a4 | 3064 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 3065 | |
9314726b VK |
3066 | if (IS_BROXTON(dev)) |
3067 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
3068 | else if (INTEL_INFO(dev)->gen >= 9) { | |
9e458034 | 3069 | if (dev_priv->edp_low_vswing && port == PORT_A) |
7ad14a29 | 3070 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
5a9d1f1a | 3071 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
7ad14a29 | 3072 | } else if (IS_VALLEYVIEW(dev)) |
bd60018a | 3073 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 3074 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 3075 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 3076 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
bd60018a | 3077 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 3078 | else |
bd60018a | 3079 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
3080 | } |
3081 | ||
3082 | static uint8_t | |
3083 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
3084 | { | |
30add22d | 3085 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 3086 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 3087 | |
5a9d1f1a DL |
3088 | if (INTEL_INFO(dev)->gen >= 9) { |
3089 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
3090 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
3091 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3092 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3093 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3094 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3095 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
3096 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
3097 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
3098 | default: |
3099 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
3100 | } | |
3101 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
d6c0d722 | 3102 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3103 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3104 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3105 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3106 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3107 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3108 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3109 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 3110 | default: |
bd60018a | 3111 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 3112 | } |
e2fa6fba P |
3113 | } else if (IS_VALLEYVIEW(dev)) { |
3114 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
3115 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3116 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3117 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3118 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3119 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3120 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3121 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 3122 | default: |
bd60018a | 3123 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 3124 | } |
bc7d38a4 | 3125 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 | 3126 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3127 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3128 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3129 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3130 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3131 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 3132 | default: |
bd60018a | 3133 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
3134 | } |
3135 | } else { | |
3136 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
3137 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3138 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3139 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3140 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3141 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3142 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3143 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 3144 | default: |
bd60018a | 3145 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 3146 | } |
a4fc5ed6 KP |
3147 | } |
3148 | } | |
3149 | ||
5829975c | 3150 | static uint32_t vlv_signal_levels(struct intel_dp *intel_dp) |
e2fa6fba P |
3151 | { |
3152 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3153 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3154 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
3155 | struct intel_crtc *intel_crtc = |
3156 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
3157 | unsigned long demph_reg_value, preemph_reg_value, |
3158 | uniqtranscale_reg_value; | |
3159 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 3160 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 3161 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
3162 | |
3163 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3164 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
3165 | preemph_reg_value = 0x0004000; |
3166 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3167 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3168 | demph_reg_value = 0x2B405555; |
3169 | uniqtranscale_reg_value = 0x552AB83A; | |
3170 | break; | |
bd60018a | 3171 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3172 | demph_reg_value = 0x2B404040; |
3173 | uniqtranscale_reg_value = 0x5548B83A; | |
3174 | break; | |
bd60018a | 3175 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3176 | demph_reg_value = 0x2B245555; |
3177 | uniqtranscale_reg_value = 0x5560B83A; | |
3178 | break; | |
bd60018a | 3179 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
3180 | demph_reg_value = 0x2B405555; |
3181 | uniqtranscale_reg_value = 0x5598DA3A; | |
3182 | break; | |
3183 | default: | |
3184 | return 0; | |
3185 | } | |
3186 | break; | |
bd60018a | 3187 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
3188 | preemph_reg_value = 0x0002000; |
3189 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3190 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3191 | demph_reg_value = 0x2B404040; |
3192 | uniqtranscale_reg_value = 0x5552B83A; | |
3193 | break; | |
bd60018a | 3194 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3195 | demph_reg_value = 0x2B404848; |
3196 | uniqtranscale_reg_value = 0x5580B83A; | |
3197 | break; | |
bd60018a | 3198 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3199 | demph_reg_value = 0x2B404040; |
3200 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3201 | break; | |
3202 | default: | |
3203 | return 0; | |
3204 | } | |
3205 | break; | |
bd60018a | 3206 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
3207 | preemph_reg_value = 0x0000000; |
3208 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3209 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3210 | demph_reg_value = 0x2B305555; |
3211 | uniqtranscale_reg_value = 0x5570B83A; | |
3212 | break; | |
bd60018a | 3213 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3214 | demph_reg_value = 0x2B2B4040; |
3215 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3216 | break; | |
3217 | default: | |
3218 | return 0; | |
3219 | } | |
3220 | break; | |
bd60018a | 3221 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
3222 | preemph_reg_value = 0x0006000; |
3223 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3224 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3225 | demph_reg_value = 0x1B405555; |
3226 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3227 | break; | |
3228 | default: | |
3229 | return 0; | |
3230 | } | |
3231 | break; | |
3232 | default: | |
3233 | return 0; | |
3234 | } | |
3235 | ||
a580516d | 3236 | mutex_lock(&dev_priv->sb_lock); |
ab3c759a CML |
3237 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
3238 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
3239 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 3240 | uniqtranscale_reg_value); |
ab3c759a CML |
3241 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
3242 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
3243 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
3244 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
a580516d | 3245 | mutex_unlock(&dev_priv->sb_lock); |
e2fa6fba P |
3246 | |
3247 | return 0; | |
3248 | } | |
3249 | ||
67fa24b4 VS |
3250 | static bool chv_need_uniq_trans_scale(uint8_t train_set) |
3251 | { | |
3252 | return (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) == DP_TRAIN_PRE_EMPH_LEVEL_0 && | |
3253 | (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) == DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
3254 | } | |
3255 | ||
5829975c | 3256 | static uint32_t chv_signal_levels(struct intel_dp *intel_dp) |
e4a1d846 CML |
3257 | { |
3258 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3259 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3260 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
3261 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 3262 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
3263 | uint8_t train_set = intel_dp->train_set[0]; |
3264 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
3265 | enum pipe pipe = intel_crtc->pipe; |
3266 | int i; | |
e4a1d846 CML |
3267 | |
3268 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3269 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3270 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3271 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3272 | deemph_reg_value = 128; |
3273 | margin_reg_value = 52; | |
3274 | break; | |
bd60018a | 3275 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3276 | deemph_reg_value = 128; |
3277 | margin_reg_value = 77; | |
3278 | break; | |
bd60018a | 3279 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3280 | deemph_reg_value = 128; |
3281 | margin_reg_value = 102; | |
3282 | break; | |
bd60018a | 3283 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3284 | deemph_reg_value = 128; |
3285 | margin_reg_value = 154; | |
3286 | /* FIXME extra to set for 1200 */ | |
3287 | break; | |
3288 | default: | |
3289 | return 0; | |
3290 | } | |
3291 | break; | |
bd60018a | 3292 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3293 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3294 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3295 | deemph_reg_value = 85; |
3296 | margin_reg_value = 78; | |
3297 | break; | |
bd60018a | 3298 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3299 | deemph_reg_value = 85; |
3300 | margin_reg_value = 116; | |
3301 | break; | |
bd60018a | 3302 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3303 | deemph_reg_value = 85; |
3304 | margin_reg_value = 154; | |
3305 | break; | |
3306 | default: | |
3307 | return 0; | |
3308 | } | |
3309 | break; | |
bd60018a | 3310 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3311 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3312 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3313 | deemph_reg_value = 64; |
3314 | margin_reg_value = 104; | |
3315 | break; | |
bd60018a | 3316 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3317 | deemph_reg_value = 64; |
3318 | margin_reg_value = 154; | |
3319 | break; | |
3320 | default: | |
3321 | return 0; | |
3322 | } | |
3323 | break; | |
bd60018a | 3324 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3325 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3326 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3327 | deemph_reg_value = 43; |
3328 | margin_reg_value = 154; | |
3329 | break; | |
3330 | default: | |
3331 | return 0; | |
3332 | } | |
3333 | break; | |
3334 | default: | |
3335 | return 0; | |
3336 | } | |
3337 | ||
a580516d | 3338 | mutex_lock(&dev_priv->sb_lock); |
e4a1d846 CML |
3339 | |
3340 | /* Clear calc init */ | |
1966e59e VS |
3341 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3342 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
a02ef3c7 VS |
3343 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); |
3344 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
1966e59e VS |
3345 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); |
3346 | ||
e0fce78f VS |
3347 | if (intel_crtc->config->lane_count > 2) { |
3348 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3349 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
3350 | val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK); | |
3351 | val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5; | |
3352 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
3353 | } | |
e4a1d846 | 3354 | |
a02ef3c7 VS |
3355 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch)); |
3356 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3357 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3358 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val); | |
3359 | ||
e0fce78f VS |
3360 | if (intel_crtc->config->lane_count > 2) { |
3361 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch)); | |
3362 | val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK); | |
3363 | val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000; | |
3364 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val); | |
3365 | } | |
a02ef3c7 | 3366 | |
e4a1d846 | 3367 | /* Program swing deemph */ |
e0fce78f | 3368 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
f72df8db VS |
3369 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); |
3370 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
3371 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
3372 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
3373 | } | |
e4a1d846 CML |
3374 | |
3375 | /* Program swing margin */ | |
e0fce78f | 3376 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
f72df8db | 3377 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); |
67fa24b4 | 3378 | |
1fb44505 VS |
3379 | val &= ~DPIO_SWING_MARGIN000_MASK; |
3380 | val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT; | |
67fa24b4 VS |
3381 | |
3382 | /* | |
3383 | * Supposedly this value shouldn't matter when unique transition | |
3384 | * scale is disabled, but in fact it does matter. Let's just | |
3385 | * always program the same value and hope it's OK. | |
3386 | */ | |
3387 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
3388 | val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT; | |
3389 | ||
f72df8db VS |
3390 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); |
3391 | } | |
e4a1d846 | 3392 | |
67fa24b4 VS |
3393 | /* |
3394 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
3395 | * for ch1. Might be a typo in the doc. | |
3396 | * For now, for this unique transition scale selection, set bit | |
3397 | * 27 for ch0 and ch1. | |
3398 | */ | |
e0fce78f | 3399 | for (i = 0; i < intel_crtc->config->lane_count; i++) { |
f72df8db | 3400 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); |
67fa24b4 | 3401 | if (chv_need_uniq_trans_scale(train_set)) |
f72df8db | 3402 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; |
67fa24b4 VS |
3403 | else |
3404 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
3405 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
e4a1d846 CML |
3406 | } |
3407 | ||
3408 | /* Start swing calculation */ | |
1966e59e VS |
3409 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
3410 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3411 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
3412 | ||
e0fce78f VS |
3413 | if (intel_crtc->config->lane_count > 2) { |
3414 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
3415 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
3416 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
3417 | } | |
e4a1d846 | 3418 | |
a580516d | 3419 | mutex_unlock(&dev_priv->sb_lock); |
e4a1d846 CML |
3420 | |
3421 | return 0; | |
3422 | } | |
3423 | ||
a4fc5ed6 | 3424 | static void |
0301b3ac JN |
3425 | intel_get_adjust_train(struct intel_dp *intel_dp, |
3426 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
3427 | { |
3428 | uint8_t v = 0; | |
3429 | uint8_t p = 0; | |
3430 | int lane; | |
1a2eb460 KP |
3431 | uint8_t voltage_max; |
3432 | uint8_t preemph_max; | |
a4fc5ed6 | 3433 | |
901c2daf | 3434 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
3435 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
3436 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
3437 | |
3438 | if (this_v > v) | |
3439 | v = this_v; | |
3440 | if (this_p > p) | |
3441 | p = this_p; | |
3442 | } | |
3443 | ||
1a2eb460 | 3444 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
3445 | if (v >= voltage_max) |
3446 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 3447 | |
1a2eb460 KP |
3448 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
3449 | if (p >= preemph_max) | |
3450 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
3451 | |
3452 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 3453 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
3454 | } |
3455 | ||
3456 | static uint32_t | |
5829975c | 3457 | gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3458 | { |
3cf2efb1 | 3459 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3460 | |
3cf2efb1 | 3461 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3462 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3463 | default: |
3464 | signal_levels |= DP_VOLTAGE_0_4; | |
3465 | break; | |
bd60018a | 3466 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3467 | signal_levels |= DP_VOLTAGE_0_6; |
3468 | break; | |
bd60018a | 3469 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3470 | signal_levels |= DP_VOLTAGE_0_8; |
3471 | break; | |
bd60018a | 3472 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3473 | signal_levels |= DP_VOLTAGE_1_2; |
3474 | break; | |
3475 | } | |
3cf2efb1 | 3476 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3477 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3478 | default: |
3479 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3480 | break; | |
bd60018a | 3481 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3482 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3483 | break; | |
bd60018a | 3484 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3485 | signal_levels |= DP_PRE_EMPHASIS_6; |
3486 | break; | |
bd60018a | 3487 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3488 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3489 | break; | |
3490 | } | |
3491 | return signal_levels; | |
3492 | } | |
3493 | ||
e3421a18 ZW |
3494 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3495 | static uint32_t | |
5829975c | 3496 | gen6_edp_signal_levels(uint8_t train_set) |
e3421a18 | 3497 | { |
3c5a62b5 YL |
3498 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3499 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3500 | switch (signal_levels) { | |
bd60018a SJ |
3501 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3502 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3503 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3504 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3505 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3506 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3507 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3508 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3509 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3510 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3511 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3512 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3513 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3514 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3515 | default: |
3c5a62b5 YL |
3516 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3517 | "0x%x\n", signal_levels); | |
3518 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3519 | } |
3520 | } | |
3521 | ||
1a2eb460 KP |
3522 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3523 | static uint32_t | |
5829975c | 3524 | gen7_edp_signal_levels(uint8_t train_set) |
1a2eb460 KP |
3525 | { |
3526 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3527 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3528 | switch (signal_levels) { | |
bd60018a | 3529 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3530 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3531 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3532 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3533 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3534 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3535 | ||
bd60018a | 3536 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3537 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3538 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3539 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3540 | ||
bd60018a | 3541 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3542 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3543 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3544 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3545 | ||
3546 | default: | |
3547 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3548 | "0x%x\n", signal_levels); | |
3549 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3550 | } | |
3551 | } | |
3552 | ||
f0a3424e PZ |
3553 | /* Properly updates "DP" with the correct signal levels. */ |
3554 | static void | |
3555 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
3556 | { | |
3557 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3558 | enum port port = intel_dig_port->port; |
f0a3424e | 3559 | struct drm_device *dev = intel_dig_port->base.base.dev; |
f8896f5d | 3560 | uint32_t signal_levels, mask = 0; |
f0a3424e PZ |
3561 | uint8_t train_set = intel_dp->train_set[0]; |
3562 | ||
f8896f5d DW |
3563 | if (HAS_DDI(dev)) { |
3564 | signal_levels = ddi_signal_levels(intel_dp); | |
3565 | ||
3566 | if (IS_BROXTON(dev)) | |
3567 | signal_levels = 0; | |
3568 | else | |
3569 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 | 3570 | } else if (IS_CHERRYVIEW(dev)) { |
5829975c | 3571 | signal_levels = chv_signal_levels(intel_dp); |
e2fa6fba | 3572 | } else if (IS_VALLEYVIEW(dev)) { |
5829975c | 3573 | signal_levels = vlv_signal_levels(intel_dp); |
bc7d38a4 | 3574 | } else if (IS_GEN7(dev) && port == PORT_A) { |
5829975c | 3575 | signal_levels = gen7_edp_signal_levels(train_set); |
f0a3424e | 3576 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
bc7d38a4 | 3577 | } else if (IS_GEN6(dev) && port == PORT_A) { |
5829975c | 3578 | signal_levels = gen6_edp_signal_levels(train_set); |
f0a3424e PZ |
3579 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
3580 | } else { | |
5829975c | 3581 | signal_levels = gen4_signal_levels(train_set); |
f0a3424e PZ |
3582 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
3583 | } | |
3584 | ||
96fb9f9b VK |
3585 | if (mask) |
3586 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3587 | ||
3588 | DRM_DEBUG_KMS("Using vswing level %d\n", | |
3589 | train_set & DP_TRAIN_VOLTAGE_SWING_MASK); | |
3590 | DRM_DEBUG_KMS("Using pre-emphasis level %d\n", | |
3591 | (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> | |
3592 | DP_TRAIN_PRE_EMPHASIS_SHIFT); | |
f0a3424e PZ |
3593 | |
3594 | *DP = (*DP & ~mask) | signal_levels; | |
3595 | } | |
3596 | ||
a4fc5ed6 | 3597 | static bool |
ea5b213a | 3598 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 3599 | uint32_t *DP, |
58e10eb9 | 3600 | uint8_t dp_train_pat) |
a4fc5ed6 | 3601 | { |
174edf1f | 3602 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
90a6b7b0 VS |
3603 | struct drm_i915_private *dev_priv = |
3604 | to_i915(intel_dig_port->base.base.dev); | |
2cdfe6c8 JN |
3605 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
3606 | int ret, len; | |
a4fc5ed6 | 3607 | |
7b13b58a | 3608 | _intel_dp_set_link_train(intel_dp, DP, dp_train_pat); |
47ea7542 | 3609 | |
70aff66c | 3610 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 3611 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 3612 | |
2cdfe6c8 JN |
3613 | buf[0] = dp_train_pat; |
3614 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 3615 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
3616 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
3617 | len = 1; | |
3618 | } else { | |
3619 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
901c2daf VS |
3620 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); |
3621 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3622 | } |
a4fc5ed6 | 3623 | |
9d1a1031 JN |
3624 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3625 | buf, len); | |
2cdfe6c8 JN |
3626 | |
3627 | return ret == len; | |
a4fc5ed6 KP |
3628 | } |
3629 | ||
70aff66c JN |
3630 | static bool |
3631 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3632 | uint8_t dp_train_pat) | |
3633 | { | |
4e96c977 MK |
3634 | if (!intel_dp->train_set_valid) |
3635 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); | |
70aff66c JN |
3636 | intel_dp_set_signal_levels(intel_dp, DP); |
3637 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3638 | } | |
3639 | ||
3640 | static bool | |
3641 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3642 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3643 | { |
3644 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
90a6b7b0 VS |
3645 | struct drm_i915_private *dev_priv = |
3646 | to_i915(intel_dig_port->base.base.dev); | |
70aff66c JN |
3647 | int ret; |
3648 | ||
3649 | intel_get_adjust_train(intel_dp, link_status); | |
3650 | intel_dp_set_signal_levels(intel_dp, DP); | |
3651 | ||
3652 | I915_WRITE(intel_dp->output_reg, *DP); | |
3653 | POSTING_READ(intel_dp->output_reg); | |
3654 | ||
9d1a1031 | 3655 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
901c2daf | 3656 | intel_dp->train_set, intel_dp->lane_count); |
70aff66c | 3657 | |
901c2daf | 3658 | return ret == intel_dp->lane_count; |
70aff66c JN |
3659 | } |
3660 | ||
3ab9c637 ID |
3661 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3662 | { | |
3663 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3664 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3665 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3666 | enum port port = intel_dig_port->port; | |
3667 | uint32_t val; | |
3668 | ||
3669 | if (!HAS_DDI(dev)) | |
3670 | return; | |
3671 | ||
3672 | val = I915_READ(DP_TP_CTL(port)); | |
3673 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3674 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3675 | I915_WRITE(DP_TP_CTL(port), val); | |
3676 | ||
3677 | /* | |
3678 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3679 | * we need to set idle transmission mode is to work around a HW issue | |
3680 | * where we enable the pipe while not in idle link-training mode. | |
3681 | * In this case there is requirement to wait for a minimum number of | |
3682 | * idle patterns to be sent. | |
3683 | */ | |
3684 | if (port == PORT_A) | |
3685 | return; | |
3686 | ||
3687 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3688 | 1)) | |
3689 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3690 | } | |
3691 | ||
33a34e4e | 3692 | /* Enable corresponding port and start training pattern 1 */ |
2493f21f ACO |
3693 | static void |
3694 | intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) | |
a4fc5ed6 | 3695 | { |
da63a9f2 | 3696 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3697 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3698 | int i; |
3699 | uint8_t voltage; | |
cdb0e95b | 3700 | int voltage_tries, loop_tries; |
ea5b213a | 3701 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3702 | uint8_t link_config[2]; |
04a60f9f | 3703 | uint8_t link_bw, rate_select; |
a4fc5ed6 | 3704 | |
affa9354 | 3705 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3706 | intel_ddi_prepare_link_retrain(encoder); |
3707 | ||
901c2daf | 3708 | intel_dp_compute_rate(intel_dp, intel_dp->link_rate, |
04a60f9f VS |
3709 | &link_bw, &rate_select); |
3710 | ||
3cf2efb1 | 3711 | /* Write the link configuration data */ |
04a60f9f | 3712 | link_config[0] = link_bw; |
901c2daf | 3713 | link_config[1] = intel_dp->lane_count; |
6aba5b6c JN |
3714 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
3715 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3716 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
94ca719e | 3717 | if (intel_dp->num_sink_rates) |
a8f3ef61 | 3718 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET, |
04a60f9f | 3719 | &rate_select, 1); |
6aba5b6c JN |
3720 | |
3721 | link_config[0] = 0; | |
3722 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3723 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3724 | |
3725 | DP |= DP_PORT_EN; | |
1a2eb460 | 3726 | |
70aff66c JN |
3727 | /* clock recovery */ |
3728 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3729 | DP_TRAINING_PATTERN_1 | | |
3730 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3731 | DRM_ERROR("failed to enable link training\n"); | |
3732 | return; | |
3733 | } | |
3734 | ||
a4fc5ed6 | 3735 | voltage = 0xff; |
cdb0e95b KP |
3736 | voltage_tries = 0; |
3737 | loop_tries = 0; | |
a4fc5ed6 | 3738 | for (;;) { |
70aff66c | 3739 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3740 | |
a7c9655f | 3741 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3742 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3743 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3744 | break; |
93f62dad | 3745 | } |
a4fc5ed6 | 3746 | |
901c2daf | 3747 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3748 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3749 | break; |
3750 | } | |
3751 | ||
4e96c977 MK |
3752 | /* |
3753 | * if we used previously trained voltage and pre-emphasis values | |
3754 | * and we don't get clock recovery, reset link training values | |
3755 | */ | |
3756 | if (intel_dp->train_set_valid) { | |
3757 | DRM_DEBUG_KMS("clock recovery not ok, reset"); | |
3758 | /* clear the flag as we are not reusing train set */ | |
3759 | intel_dp->train_set_valid = false; | |
3760 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3761 | DP_TRAINING_PATTERN_1 | | |
3762 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3763 | DRM_ERROR("failed to enable link training\n"); | |
3764 | return; | |
3765 | } | |
3766 | continue; | |
3767 | } | |
3768 | ||
3cf2efb1 | 3769 | /* Check to see if we've tried the max voltage */ |
901c2daf | 3770 | for (i = 0; i < intel_dp->lane_count; i++) |
3cf2efb1 | 3771 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) |
a4fc5ed6 | 3772 | break; |
901c2daf | 3773 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3774 | ++loop_tries; |
3775 | if (loop_tries == 5) { | |
3def84b3 | 3776 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3777 | break; |
3778 | } | |
70aff66c JN |
3779 | intel_dp_reset_link_train(intel_dp, &DP, |
3780 | DP_TRAINING_PATTERN_1 | | |
3781 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3782 | voltage_tries = 0; |
3783 | continue; | |
3784 | } | |
a4fc5ed6 | 3785 | |
3cf2efb1 | 3786 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3787 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3788 | ++voltage_tries; |
b06fbda3 | 3789 | if (voltage_tries == 5) { |
3def84b3 | 3790 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3791 | break; |
3792 | } | |
3793 | } else | |
3794 | voltage_tries = 0; | |
3795 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3796 | |
70aff66c JN |
3797 | /* Update training set as requested by target */ |
3798 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3799 | DRM_ERROR("failed to update link training\n"); | |
3800 | break; | |
3801 | } | |
a4fc5ed6 KP |
3802 | } |
3803 | ||
33a34e4e JB |
3804 | intel_dp->DP = DP; |
3805 | } | |
3806 | ||
2493f21f ACO |
3807 | static void |
3808 | intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp) | |
33a34e4e | 3809 | { |
bc5133d5 JN |
3810 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3811 | struct drm_device *dev = dig_port->base.base.dev; | |
33a34e4e | 3812 | bool channel_eq = false; |
37f80975 | 3813 | int tries, cr_tries; |
33a34e4e | 3814 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3815 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3816 | ||
bc5133d5 JN |
3817 | /* |
3818 | * Training Pattern 3 for HBR2 or 1.2 devices that support it. | |
3819 | * | |
3820 | * Intel platforms that support HBR2 also support TPS3. TPS3 support is | |
3821 | * also mandatory for downstream devices that support HBR2. | |
3822 | * | |
3823 | * Due to WaDisableHBR2 SKL < B0 is the only exception where TPS3 is | |
3824 | * supported but still not enabled. | |
3825 | */ | |
1da7d713 JN |
3826 | if (intel_dp_source_supports_hbr2(dev) && |
3827 | drm_dp_tps3_supported(intel_dp->dpcd)) | |
06ea66b6 | 3828 | training_pattern = DP_TRAINING_PATTERN_3; |
1da7d713 JN |
3829 | else if (intel_dp->link_rate == 540000) |
3830 | DRM_ERROR("5.4 Gbps link rate without HBR2/TPS3 support\n"); | |
33a34e4e | 3831 | |
a4fc5ed6 | 3832 | /* channel equalization */ |
70aff66c | 3833 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3834 | training_pattern | |
70aff66c JN |
3835 | DP_LINK_SCRAMBLING_DISABLE)) { |
3836 | DRM_ERROR("failed to start channel equalization\n"); | |
3837 | return; | |
3838 | } | |
3839 | ||
a4fc5ed6 | 3840 | tries = 0; |
37f80975 | 3841 | cr_tries = 0; |
a4fc5ed6 KP |
3842 | channel_eq = false; |
3843 | for (;;) { | |
70aff66c | 3844 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3845 | |
37f80975 JB |
3846 | if (cr_tries > 5) { |
3847 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3848 | break; |
3849 | } | |
3850 | ||
a7c9655f | 3851 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3852 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3853 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3854 | break; |
70aff66c | 3855 | } |
a4fc5ed6 | 3856 | |
37f80975 | 3857 | /* Make sure clock is still ok */ |
90a6b7b0 | 3858 | if (!drm_dp_clock_recovery_ok(link_status, |
901c2daf | 3859 | intel_dp->lane_count)) { |
4e96c977 | 3860 | intel_dp->train_set_valid = false; |
2493f21f | 3861 | intel_dp_link_training_clock_recovery(intel_dp); |
70aff66c | 3862 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3863 | training_pattern | |
70aff66c | 3864 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3865 | cr_tries++; |
3866 | continue; | |
3867 | } | |
3868 | ||
90a6b7b0 | 3869 | if (drm_dp_channel_eq_ok(link_status, |
901c2daf | 3870 | intel_dp->lane_count)) { |
3cf2efb1 CW |
3871 | channel_eq = true; |
3872 | break; | |
3873 | } | |
a4fc5ed6 | 3874 | |
37f80975 JB |
3875 | /* Try 5 times, then try clock recovery if that fails */ |
3876 | if (tries > 5) { | |
4e96c977 | 3877 | intel_dp->train_set_valid = false; |
2493f21f | 3878 | intel_dp_link_training_clock_recovery(intel_dp); |
70aff66c | 3879 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3880 | training_pattern | |
70aff66c | 3881 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3882 | tries = 0; |
3883 | cr_tries++; | |
3884 | continue; | |
3885 | } | |
a4fc5ed6 | 3886 | |
70aff66c JN |
3887 | /* Update training set as requested by target */ |
3888 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3889 | DRM_ERROR("failed to update link training\n"); | |
3890 | break; | |
3891 | } | |
3cf2efb1 | 3892 | ++tries; |
869184a6 | 3893 | } |
3cf2efb1 | 3894 | |
3ab9c637 ID |
3895 | intel_dp_set_idle_link_train(intel_dp); |
3896 | ||
3897 | intel_dp->DP = DP; | |
3898 | ||
4e96c977 | 3899 | if (channel_eq) { |
5fa836a9 | 3900 | intel_dp->train_set_valid = true; |
07f42258 | 3901 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
4e96c977 | 3902 | } |
3ab9c637 ID |
3903 | } |
3904 | ||
3905 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3906 | { | |
70aff66c | 3907 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3908 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3909 | } |
3910 | ||
2493f21f ACO |
3911 | void |
3912 | intel_dp_start_link_train(struct intel_dp *intel_dp) | |
3913 | { | |
3914 | intel_dp_link_training_clock_recovery(intel_dp); | |
3915 | intel_dp_link_training_channel_equalization(intel_dp); | |
3916 | } | |
3917 | ||
a4fc5ed6 | 3918 | static void |
ea5b213a | 3919 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3920 | { |
da63a9f2 | 3921 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1612c8bd | 3922 | struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); |
bc7d38a4 | 3923 | enum port port = intel_dig_port->port; |
da63a9f2 | 3924 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3925 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 3926 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3927 | |
bc76e320 | 3928 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3929 | return; |
3930 | ||
0c33d8d7 | 3931 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3932 | return; |
3933 | ||
28c97730 | 3934 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3935 | |
39e5fa88 VS |
3936 | if ((IS_GEN7(dev) && port == PORT_A) || |
3937 | (HAS_PCH_CPT(dev) && port != PORT_A)) { | |
e3421a18 | 3938 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
1612c8bd | 3939 | DP |= DP_LINK_TRAIN_PAT_IDLE_CPT; |
e3421a18 | 3940 | } else { |
aad3d14d VS |
3941 | if (IS_CHERRYVIEW(dev)) |
3942 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3943 | else | |
3944 | DP &= ~DP_LINK_TRAIN_MASK; | |
1612c8bd | 3945 | DP |= DP_LINK_TRAIN_PAT_IDLE; |
e3421a18 | 3946 | } |
1612c8bd | 3947 | I915_WRITE(intel_dp->output_reg, DP); |
fe255d00 | 3948 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3949 | |
1612c8bd VS |
3950 | DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); |
3951 | I915_WRITE(intel_dp->output_reg, DP); | |
3952 | POSTING_READ(intel_dp->output_reg); | |
3953 | ||
3954 | /* | |
3955 | * HW workaround for IBX, we need to move the port | |
3956 | * to transcoder A after disabling it to allow the | |
3957 | * matching HDMI port to be enabled on transcoder A. | |
3958 | */ | |
3959 | if (HAS_PCH_IBX(dev) && crtc->pipe == PIPE_B && port != PORT_A) { | |
3960 | /* always enable with pattern 1 (as per spec) */ | |
3961 | DP &= ~(DP_PIPEB_SELECT | DP_LINK_TRAIN_MASK); | |
3962 | DP |= DP_PORT_EN | DP_LINK_TRAIN_PAT_1; | |
3963 | I915_WRITE(intel_dp->output_reg, DP); | |
3964 | POSTING_READ(intel_dp->output_reg); | |
3965 | ||
3966 | DP &= ~DP_PORT_EN; | |
5bddd17f | 3967 | I915_WRITE(intel_dp->output_reg, DP); |
0ca09685 | 3968 | POSTING_READ(intel_dp->output_reg); |
5bddd17f EA |
3969 | } |
3970 | ||
f01eca2e | 3971 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3972 | } |
3973 | ||
26d61aad KP |
3974 | static bool |
3975 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3976 | { |
a031d709 RV |
3977 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3978 | struct drm_device *dev = dig_port->base.base.dev; | |
3979 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fc0f8e25 | 3980 | uint8_t rev; |
a031d709 | 3981 | |
9d1a1031 JN |
3982 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3983 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3984 | return false; /* aux transfer failed */ |
92fd8fd1 | 3985 | |
a8e98153 | 3986 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3987 | |
edb39244 AJ |
3988 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3989 | return false; /* DPCD not present */ | |
3990 | ||
2293bb5c SK |
3991 | /* Check if the panel supports PSR */ |
3992 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3993 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3994 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3995 | intel_dp->psr_dpcd, | |
3996 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3997 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3998 | dev_priv->psr.sink_support = true; | |
50003939 | 3999 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 4000 | } |
474d1ec4 SJ |
4001 | |
4002 | if (INTEL_INFO(dev)->gen >= 9 && | |
4003 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { | |
4004 | uint8_t frame_sync_cap; | |
4005 | ||
4006 | dev_priv->psr.sink_support = true; | |
4007 | intel_dp_dpcd_read_wake(&intel_dp->aux, | |
4008 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, | |
4009 | &frame_sync_cap, 1); | |
4010 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; | |
4011 | /* PSR2 needs frame sync as well */ | |
4012 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; | |
4013 | DRM_DEBUG_KMS("PSR2 %s on sink", | |
4014 | dev_priv->psr.psr2_support ? "supported" : "not supported"); | |
4015 | } | |
50003939 JN |
4016 | } |
4017 | ||
bc5133d5 | 4018 | DRM_DEBUG_KMS("Display Port TPS3 support: source %s, sink %s\n", |
742f491d JN |
4019 | yesno(intel_dp_source_supports_hbr2(dev)), |
4020 | yesno(drm_dp_tps3_supported(intel_dp->dpcd))); | |
06ea66b6 | 4021 | |
fc0f8e25 SJ |
4022 | /* Intermediate frequency support */ |
4023 | if (is_edp(intel_dp) && | |
4024 | (intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
4025 | (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) && | |
4026 | (rev >= 0x03)) { /* eDp v1.4 or higher */ | |
94ca719e | 4027 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
ea2d8a42 VS |
4028 | int i; |
4029 | ||
fc0f8e25 SJ |
4030 | intel_dp_dpcd_read_wake(&intel_dp->aux, |
4031 | DP_SUPPORTED_LINK_RATES, | |
94ca719e VS |
4032 | sink_rates, |
4033 | sizeof(sink_rates)); | |
ea2d8a42 | 4034 | |
94ca719e VS |
4035 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
4036 | int val = le16_to_cpu(sink_rates[i]); | |
ea2d8a42 VS |
4037 | |
4038 | if (val == 0) | |
4039 | break; | |
4040 | ||
af77b974 SJ |
4041 | /* Value read is in kHz while drm clock is saved in deca-kHz */ |
4042 | intel_dp->sink_rates[i] = (val * 200) / 10; | |
ea2d8a42 | 4043 | } |
94ca719e | 4044 | intel_dp->num_sink_rates = i; |
fc0f8e25 | 4045 | } |
0336400e VS |
4046 | |
4047 | intel_dp_print_rates(intel_dp); | |
4048 | ||
edb39244 AJ |
4049 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
4050 | DP_DWN_STRM_PORT_PRESENT)) | |
4051 | return true; /* native DP sink */ | |
4052 | ||
4053 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
4054 | return true; /* no per-port downstream info */ | |
4055 | ||
9d1a1031 JN |
4056 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
4057 | intel_dp->downstream_ports, | |
4058 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
4059 | return false; /* downstream port status fetch failed */ |
4060 | ||
4061 | return true; | |
92fd8fd1 KP |
4062 | } |
4063 | ||
0d198328 AJ |
4064 | static void |
4065 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
4066 | { | |
4067 | u8 buf[3]; | |
4068 | ||
4069 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
4070 | return; | |
4071 | ||
9d1a1031 | 4072 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
4073 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
4074 | buf[0], buf[1], buf[2]); | |
4075 | ||
9d1a1031 | 4076 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
4077 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
4078 | buf[0], buf[1], buf[2]); | |
4079 | } | |
4080 | ||
0e32b39c DA |
4081 | static bool |
4082 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
4083 | { | |
4084 | u8 buf[1]; | |
4085 | ||
4086 | if (!intel_dp->can_mst) | |
4087 | return false; | |
4088 | ||
4089 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
4090 | return false; | |
4091 | ||
0e32b39c DA |
4092 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { |
4093 | if (buf[0] & DP_MST_CAP) { | |
4094 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
4095 | intel_dp->is_mst = true; | |
4096 | } else { | |
4097 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
4098 | intel_dp->is_mst = false; | |
4099 | } | |
4100 | } | |
0e32b39c DA |
4101 | |
4102 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4103 | return intel_dp->is_mst; | |
4104 | } | |
4105 | ||
e5a1cab5 | 4106 | static int intel_dp_sink_crc_stop(struct intel_dp *intel_dp) |
d2e216d0 | 4107 | { |
082dcc7c RV |
4108 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
4109 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
ad9dc91b | 4110 | u8 buf; |
e5a1cab5 | 4111 | int ret = 0; |
d2e216d0 | 4112 | |
082dcc7c RV |
4113 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) { |
4114 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); | |
e5a1cab5 RV |
4115 | ret = -EIO; |
4116 | goto out; | |
4373f0f2 PZ |
4117 | } |
4118 | ||
082dcc7c | 4119 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
e5a1cab5 | 4120 | buf & ~DP_TEST_SINK_START) < 0) { |
082dcc7c | 4121 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); |
e5a1cab5 RV |
4122 | ret = -EIO; |
4123 | goto out; | |
4124 | } | |
d2e216d0 | 4125 | |
621d4c76 | 4126 | intel_dp->sink_crc.started = false; |
e5a1cab5 | 4127 | out: |
082dcc7c | 4128 | hsw_enable_ips(intel_crtc); |
e5a1cab5 | 4129 | return ret; |
082dcc7c RV |
4130 | } |
4131 | ||
4132 | static int intel_dp_sink_crc_start(struct intel_dp *intel_dp) | |
4133 | { | |
4134 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
4135 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
4136 | u8 buf; | |
e5a1cab5 RV |
4137 | int ret; |
4138 | ||
621d4c76 | 4139 | if (intel_dp->sink_crc.started) { |
e5a1cab5 RV |
4140 | ret = intel_dp_sink_crc_stop(intel_dp); |
4141 | if (ret) | |
4142 | return ret; | |
4143 | } | |
082dcc7c RV |
4144 | |
4145 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) | |
4146 | return -EIO; | |
4147 | ||
4148 | if (!(buf & DP_TEST_CRC_SUPPORTED)) | |
4149 | return -ENOTTY; | |
4150 | ||
621d4c76 RV |
4151 | intel_dp->sink_crc.last_count = buf & DP_TEST_COUNT_MASK; |
4152 | ||
082dcc7c RV |
4153 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) |
4154 | return -EIO; | |
4155 | ||
4156 | hsw_disable_ips(intel_crtc); | |
1dda5f93 | 4157 | |
9d1a1031 | 4158 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
082dcc7c RV |
4159 | buf | DP_TEST_SINK_START) < 0) { |
4160 | hsw_enable_ips(intel_crtc); | |
4161 | return -EIO; | |
4373f0f2 PZ |
4162 | } |
4163 | ||
621d4c76 | 4164 | intel_dp->sink_crc.started = true; |
082dcc7c RV |
4165 | return 0; |
4166 | } | |
4167 | ||
4168 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) | |
4169 | { | |
4170 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
4171 | struct drm_device *dev = dig_port->base.base.dev; | |
4172 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
4173 | u8 buf; | |
621d4c76 | 4174 | int count, ret; |
082dcc7c | 4175 | int attempts = 6; |
aabc95dc | 4176 | bool old_equal_new; |
082dcc7c RV |
4177 | |
4178 | ret = intel_dp_sink_crc_start(intel_dp); | |
4179 | if (ret) | |
4180 | return ret; | |
4181 | ||
ad9dc91b | 4182 | do { |
621d4c76 RV |
4183 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
4184 | ||
1dda5f93 | 4185 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
4373f0f2 PZ |
4186 | DP_TEST_SINK_MISC, &buf) < 0) { |
4187 | ret = -EIO; | |
afe0d67e | 4188 | goto stop; |
4373f0f2 | 4189 | } |
621d4c76 | 4190 | count = buf & DP_TEST_COUNT_MASK; |
aabc95dc | 4191 | |
621d4c76 RV |
4192 | /* |
4193 | * Count might be reset during the loop. In this case | |
4194 | * last known count needs to be reset as well. | |
4195 | */ | |
4196 | if (count == 0) | |
4197 | intel_dp->sink_crc.last_count = 0; | |
4198 | ||
4199 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) { | |
4200 | ret = -EIO; | |
4201 | goto stop; | |
4202 | } | |
aabc95dc RV |
4203 | |
4204 | old_equal_new = (count == intel_dp->sink_crc.last_count && | |
4205 | !memcmp(intel_dp->sink_crc.last_crc, crc, | |
4206 | 6 * sizeof(u8))); | |
4207 | ||
4208 | } while (--attempts && (count == 0 || old_equal_new)); | |
621d4c76 RV |
4209 | |
4210 | intel_dp->sink_crc.last_count = buf & DP_TEST_COUNT_MASK; | |
4211 | memcpy(intel_dp->sink_crc.last_crc, crc, 6 * sizeof(u8)); | |
ad9dc91b RV |
4212 | |
4213 | if (attempts == 0) { | |
aabc95dc RV |
4214 | if (old_equal_new) { |
4215 | DRM_DEBUG_KMS("Unreliable Sink CRC counter: Current returned CRC is identical to the previous one\n"); | |
4216 | } else { | |
4217 | DRM_ERROR("Panel is unable to calculate any CRC after 6 vblanks\n"); | |
4218 | ret = -ETIMEDOUT; | |
4219 | goto stop; | |
4220 | } | |
ad9dc91b | 4221 | } |
d2e216d0 | 4222 | |
afe0d67e | 4223 | stop: |
082dcc7c | 4224 | intel_dp_sink_crc_stop(intel_dp); |
4373f0f2 | 4225 | return ret; |
d2e216d0 RV |
4226 | } |
4227 | ||
a60f0e38 JB |
4228 | static bool |
4229 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4230 | { | |
9d1a1031 JN |
4231 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
4232 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4233 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
4234 | } |
4235 | ||
0e32b39c DA |
4236 | static bool |
4237 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
4238 | { | |
4239 | int ret; | |
4240 | ||
4241 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
4242 | DP_SINK_COUNT_ESI, | |
4243 | sink_irq_vector, 14); | |
4244 | if (ret != 14) | |
4245 | return false; | |
4246 | ||
4247 | return true; | |
4248 | } | |
4249 | ||
c5d5ab7a TP |
4250 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
4251 | { | |
4252 | uint8_t test_result = DP_TEST_ACK; | |
4253 | return test_result; | |
4254 | } | |
4255 | ||
4256 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) | |
4257 | { | |
4258 | uint8_t test_result = DP_TEST_NAK; | |
4259 | return test_result; | |
4260 | } | |
4261 | ||
4262 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) | |
a60f0e38 | 4263 | { |
c5d5ab7a | 4264 | uint8_t test_result = DP_TEST_NAK; |
559be30c TP |
4265 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
4266 | struct drm_connector *connector = &intel_connector->base; | |
4267 | ||
4268 | if (intel_connector->detect_edid == NULL || | |
ac6f2e29 | 4269 | connector->edid_corrupt || |
559be30c TP |
4270 | intel_dp->aux.i2c_defer_count > 6) { |
4271 | /* Check EDID read for NACKs, DEFERs and corruption | |
4272 | * (DP CTS 1.2 Core r1.1) | |
4273 | * 4.2.2.4 : Failed EDID read, I2C_NAK | |
4274 | * 4.2.2.5 : Failed EDID read, I2C_DEFER | |
4275 | * 4.2.2.6 : EDID corruption detected | |
4276 | * Use failsafe mode for all cases | |
4277 | */ | |
4278 | if (intel_dp->aux.i2c_nack_count > 0 || | |
4279 | intel_dp->aux.i2c_defer_count > 0) | |
4280 | DRM_DEBUG_KMS("EDID read had %d NACKs, %d DEFERs\n", | |
4281 | intel_dp->aux.i2c_nack_count, | |
4282 | intel_dp->aux.i2c_defer_count); | |
4283 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; | |
4284 | } else { | |
f79b468e TS |
4285 | struct edid *block = intel_connector->detect_edid; |
4286 | ||
4287 | /* We have to write the checksum | |
4288 | * of the last block read | |
4289 | */ | |
4290 | block += intel_connector->detect_edid->extensions; | |
4291 | ||
559be30c TP |
4292 | if (!drm_dp_dpcd_write(&intel_dp->aux, |
4293 | DP_TEST_EDID_CHECKSUM, | |
f79b468e | 4294 | &block->checksum, |
5a1cc655 | 4295 | 1)) |
559be30c TP |
4296 | DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |
4297 | ||
4298 | test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE; | |
4299 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_STANDARD; | |
4300 | } | |
4301 | ||
4302 | /* Set test active flag here so userspace doesn't interrupt things */ | |
4303 | intel_dp->compliance_test_active = 1; | |
4304 | ||
c5d5ab7a TP |
4305 | return test_result; |
4306 | } | |
4307 | ||
4308 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) | |
a60f0e38 | 4309 | { |
c5d5ab7a TP |
4310 | uint8_t test_result = DP_TEST_NAK; |
4311 | return test_result; | |
4312 | } | |
4313 | ||
4314 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
4315 | { | |
4316 | uint8_t response = DP_TEST_NAK; | |
4317 | uint8_t rxdata = 0; | |
4318 | int status = 0; | |
4319 | ||
559be30c | 4320 | intel_dp->compliance_test_active = 0; |
c5d5ab7a | 4321 | intel_dp->compliance_test_type = 0; |
559be30c TP |
4322 | intel_dp->compliance_test_data = 0; |
4323 | ||
c5d5ab7a TP |
4324 | intel_dp->aux.i2c_nack_count = 0; |
4325 | intel_dp->aux.i2c_defer_count = 0; | |
4326 | ||
4327 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); | |
4328 | if (status <= 0) { | |
4329 | DRM_DEBUG_KMS("Could not read test request from sink\n"); | |
4330 | goto update_status; | |
4331 | } | |
4332 | ||
4333 | switch (rxdata) { | |
4334 | case DP_TEST_LINK_TRAINING: | |
4335 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); | |
4336 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; | |
4337 | response = intel_dp_autotest_link_training(intel_dp); | |
4338 | break; | |
4339 | case DP_TEST_LINK_VIDEO_PATTERN: | |
4340 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); | |
4341 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; | |
4342 | response = intel_dp_autotest_video_pattern(intel_dp); | |
4343 | break; | |
4344 | case DP_TEST_LINK_EDID_READ: | |
4345 | DRM_DEBUG_KMS("EDID test requested\n"); | |
4346 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; | |
4347 | response = intel_dp_autotest_edid(intel_dp); | |
4348 | break; | |
4349 | case DP_TEST_LINK_PHY_TEST_PATTERN: | |
4350 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); | |
4351 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; | |
4352 | response = intel_dp_autotest_phy_pattern(intel_dp); | |
4353 | break; | |
4354 | default: | |
4355 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); | |
4356 | break; | |
4357 | } | |
4358 | ||
4359 | update_status: | |
4360 | status = drm_dp_dpcd_write(&intel_dp->aux, | |
4361 | DP_TEST_RESPONSE, | |
4362 | &response, 1); | |
4363 | if (status <= 0) | |
4364 | DRM_DEBUG_KMS("Could not write test response to sink\n"); | |
a60f0e38 JB |
4365 | } |
4366 | ||
0e32b39c DA |
4367 | static int |
4368 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
4369 | { | |
4370 | bool bret; | |
4371 | ||
4372 | if (intel_dp->is_mst) { | |
4373 | u8 esi[16] = { 0 }; | |
4374 | int ret = 0; | |
4375 | int retry; | |
4376 | bool handled; | |
4377 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4378 | go_again: | |
4379 | if (bret == true) { | |
4380 | ||
4381 | /* check link status - esi[10] = 0x200c */ | |
90a6b7b0 | 4382 | if (intel_dp->active_mst_links && |
901c2daf | 4383 | !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { |
0e32b39c DA |
4384 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); |
4385 | intel_dp_start_link_train(intel_dp); | |
0e32b39c DA |
4386 | intel_dp_stop_link_train(intel_dp); |
4387 | } | |
4388 | ||
6f34cc39 | 4389 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
4390 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
4391 | ||
4392 | if (handled) { | |
4393 | for (retry = 0; retry < 3; retry++) { | |
4394 | int wret; | |
4395 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
4396 | DP_SINK_COUNT_ESI+1, | |
4397 | &esi[1], 3); | |
4398 | if (wret == 3) { | |
4399 | break; | |
4400 | } | |
4401 | } | |
4402 | ||
4403 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
4404 | if (bret == true) { | |
6f34cc39 | 4405 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
4406 | goto go_again; |
4407 | } | |
4408 | } else | |
4409 | ret = 0; | |
4410 | ||
4411 | return ret; | |
4412 | } else { | |
4413 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4414 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
4415 | intel_dp->is_mst = false; | |
4416 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4417 | /* send a hotplug event */ | |
4418 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
4419 | } | |
4420 | } | |
4421 | return -EINVAL; | |
4422 | } | |
4423 | ||
a4fc5ed6 KP |
4424 | /* |
4425 | * According to DP spec | |
4426 | * 5.1.2: | |
4427 | * 1. Read DPCD | |
4428 | * 2. Configure link according to Receiver Capabilities | |
4429 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4430 | * 4. Check link status on receipt of hot-plug interrupt | |
4431 | */ | |
a5146200 | 4432 | static void |
ea5b213a | 4433 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 4434 | { |
5b215bcf | 4435 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
da63a9f2 | 4436 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 4437 | u8 sink_irq_vector; |
93f62dad | 4438 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 4439 | |
5b215bcf DA |
4440 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
4441 | ||
e02f9a06 | 4442 | if (!intel_encoder->base.crtc) |
a4fc5ed6 KP |
4443 | return; |
4444 | ||
1a125d8a ID |
4445 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) |
4446 | return; | |
4447 | ||
92fd8fd1 | 4448 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 4449 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
4450 | return; |
4451 | } | |
4452 | ||
92fd8fd1 | 4453 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 4454 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
4455 | return; |
4456 | } | |
4457 | ||
a60f0e38 JB |
4458 | /* Try to read the source of the interrupt */ |
4459 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4460 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4461 | /* Clear interrupt source */ | |
9d1a1031 JN |
4462 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4463 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4464 | sink_irq_vector); | |
a60f0e38 JB |
4465 | |
4466 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
09b1eb13 | 4467 | DRM_DEBUG_DRIVER("Test request in short pulse not handled\n"); |
a60f0e38 JB |
4468 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
4469 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4470 | } | |
4471 | ||
901c2daf | 4472 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 4473 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 4474 | intel_encoder->base.name); |
33a34e4e | 4475 | intel_dp_start_link_train(intel_dp); |
3ab9c637 | 4476 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 4477 | } |
a4fc5ed6 | 4478 | } |
a4fc5ed6 | 4479 | |
caf9ab24 | 4480 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4481 | static enum drm_connector_status |
26d61aad | 4482 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4483 | { |
caf9ab24 | 4484 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4485 | uint8_t type; |
4486 | ||
4487 | if (!intel_dp_get_dpcd(intel_dp)) | |
4488 | return connector_status_disconnected; | |
4489 | ||
4490 | /* if there's no downstream port, we're done */ | |
4491 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4492 | return connector_status_connected; |
caf9ab24 AJ |
4493 | |
4494 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4495 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4496 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 4497 | uint8_t reg; |
9d1a1031 JN |
4498 | |
4499 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
4500 | ®, 1) < 0) | |
caf9ab24 | 4501 | return connector_status_unknown; |
9d1a1031 | 4502 | |
23235177 AJ |
4503 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
4504 | : connector_status_disconnected; | |
caf9ab24 AJ |
4505 | } |
4506 | ||
4507 | /* If no HPD, poke DDC gently */ | |
0b99836f | 4508 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4509 | return connector_status_connected; |
caf9ab24 AJ |
4510 | |
4511 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4512 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4513 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4514 | if (type == DP_DS_PORT_TYPE_VGA || | |
4515 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4516 | return connector_status_unknown; | |
4517 | } else { | |
4518 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4519 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4520 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4521 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4522 | return connector_status_unknown; | |
4523 | } | |
caf9ab24 AJ |
4524 | |
4525 | /* Anything else is out of spec, warn and ignore */ | |
4526 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4527 | return connector_status_disconnected; |
71ba9000 AJ |
4528 | } |
4529 | ||
d410b56d CW |
4530 | static enum drm_connector_status |
4531 | edp_detect(struct intel_dp *intel_dp) | |
4532 | { | |
4533 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4534 | enum drm_connector_status status; | |
4535 | ||
4536 | status = intel_panel_detect(dev); | |
4537 | if (status == connector_status_unknown) | |
4538 | status = connector_status_connected; | |
4539 | ||
4540 | return status; | |
4541 | } | |
4542 | ||
b93433cc JN |
4543 | static bool ibx_digital_port_connected(struct drm_i915_private *dev_priv, |
4544 | struct intel_digital_port *port) | |
5eb08b69 | 4545 | { |
b93433cc | 4546 | u32 bit; |
01cb9ea6 | 4547 | |
0df53b77 JN |
4548 | switch (port->port) { |
4549 | case PORT_A: | |
4550 | return true; | |
4551 | case PORT_B: | |
4552 | bit = SDE_PORTB_HOTPLUG; | |
4553 | break; | |
4554 | case PORT_C: | |
4555 | bit = SDE_PORTC_HOTPLUG; | |
4556 | break; | |
4557 | case PORT_D: | |
4558 | bit = SDE_PORTD_HOTPLUG; | |
4559 | break; | |
4560 | default: | |
4561 | MISSING_CASE(port->port); | |
4562 | return false; | |
4563 | } | |
4564 | ||
4565 | return I915_READ(SDEISR) & bit; | |
4566 | } | |
4567 | ||
4568 | static bool cpt_digital_port_connected(struct drm_i915_private *dev_priv, | |
4569 | struct intel_digital_port *port) | |
4570 | { | |
4571 | u32 bit; | |
4572 | ||
4573 | switch (port->port) { | |
4574 | case PORT_A: | |
4575 | return true; | |
4576 | case PORT_B: | |
4577 | bit = SDE_PORTB_HOTPLUG_CPT; | |
4578 | break; | |
4579 | case PORT_C: | |
4580 | bit = SDE_PORTC_HOTPLUG_CPT; | |
4581 | break; | |
4582 | case PORT_D: | |
4583 | bit = SDE_PORTD_HOTPLUG_CPT; | |
4584 | break; | |
a78695d3 JN |
4585 | case PORT_E: |
4586 | bit = SDE_PORTE_HOTPLUG_SPT; | |
4587 | break; | |
0df53b77 JN |
4588 | default: |
4589 | MISSING_CASE(port->port); | |
4590 | return false; | |
b93433cc | 4591 | } |
1b469639 | 4592 | |
b93433cc | 4593 | return I915_READ(SDEISR) & bit; |
5eb08b69 ZW |
4594 | } |
4595 | ||
7e66bcf2 | 4596 | static bool g4x_digital_port_connected(struct drm_i915_private *dev_priv, |
1d245987 | 4597 | struct intel_digital_port *port) |
a4fc5ed6 | 4598 | { |
9642c81c | 4599 | u32 bit; |
5eb08b69 | 4600 | |
9642c81c JN |
4601 | switch (port->port) { |
4602 | case PORT_B: | |
4603 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4604 | break; | |
4605 | case PORT_C: | |
4606 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4607 | break; | |
4608 | case PORT_D: | |
4609 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4610 | break; | |
4611 | default: | |
4612 | MISSING_CASE(port->port); | |
4613 | return false; | |
4614 | } | |
4615 | ||
4616 | return I915_READ(PORT_HOTPLUG_STAT) & bit; | |
4617 | } | |
4618 | ||
4619 | static bool vlv_digital_port_connected(struct drm_i915_private *dev_priv, | |
4620 | struct intel_digital_port *port) | |
4621 | { | |
4622 | u32 bit; | |
4623 | ||
4624 | switch (port->port) { | |
4625 | case PORT_B: | |
4626 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
4627 | break; | |
4628 | case PORT_C: | |
4629 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
4630 | break; | |
4631 | case PORT_D: | |
4632 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
4633 | break; | |
4634 | default: | |
4635 | MISSING_CASE(port->port); | |
4636 | return false; | |
a4fc5ed6 KP |
4637 | } |
4638 | ||
1d245987 | 4639 | return I915_READ(PORT_HOTPLUG_STAT) & bit; |
2a592bec DA |
4640 | } |
4641 | ||
e464bfde | 4642 | static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv, |
e2ec35a5 | 4643 | struct intel_digital_port *intel_dig_port) |
e464bfde | 4644 | { |
e2ec35a5 SJ |
4645 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4646 | enum port port; | |
e464bfde JN |
4647 | u32 bit; |
4648 | ||
e2ec35a5 SJ |
4649 | intel_hpd_pin_to_port(intel_encoder->hpd_pin, &port); |
4650 | switch (port) { | |
e464bfde JN |
4651 | case PORT_A: |
4652 | bit = BXT_DE_PORT_HP_DDIA; | |
4653 | break; | |
4654 | case PORT_B: | |
4655 | bit = BXT_DE_PORT_HP_DDIB; | |
4656 | break; | |
4657 | case PORT_C: | |
4658 | bit = BXT_DE_PORT_HP_DDIC; | |
4659 | break; | |
4660 | default: | |
e2ec35a5 | 4661 | MISSING_CASE(port); |
e464bfde JN |
4662 | return false; |
4663 | } | |
4664 | ||
4665 | return I915_READ(GEN8_DE_PORT_ISR) & bit; | |
4666 | } | |
4667 | ||
7e66bcf2 JN |
4668 | /* |
4669 | * intel_digital_port_connected - is the specified port connected? | |
4670 | * @dev_priv: i915 private structure | |
4671 | * @port: the port to test | |
4672 | * | |
4673 | * Return %true if @port is connected, %false otherwise. | |
4674 | */ | |
237ed86c | 4675 | bool intel_digital_port_connected(struct drm_i915_private *dev_priv, |
7e66bcf2 JN |
4676 | struct intel_digital_port *port) |
4677 | { | |
0df53b77 | 4678 | if (HAS_PCH_IBX(dev_priv)) |
7e66bcf2 | 4679 | return ibx_digital_port_connected(dev_priv, port); |
0df53b77 JN |
4680 | if (HAS_PCH_SPLIT(dev_priv)) |
4681 | return cpt_digital_port_connected(dev_priv, port); | |
e464bfde JN |
4682 | else if (IS_BROXTON(dev_priv)) |
4683 | return bxt_digital_port_connected(dev_priv, port); | |
9642c81c JN |
4684 | else if (IS_VALLEYVIEW(dev_priv)) |
4685 | return vlv_digital_port_connected(dev_priv, port); | |
7e66bcf2 JN |
4686 | else |
4687 | return g4x_digital_port_connected(dev_priv, port); | |
4688 | } | |
4689 | ||
b93433cc JN |
4690 | static enum drm_connector_status |
4691 | ironlake_dp_detect(struct intel_dp *intel_dp) | |
4692 | { | |
4693 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4694 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4695 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4696 | ||
7e66bcf2 | 4697 | if (!intel_digital_port_connected(dev_priv, intel_dig_port)) |
b93433cc JN |
4698 | return connector_status_disconnected; |
4699 | ||
4700 | return intel_dp_detect_dpcd(intel_dp); | |
4701 | } | |
4702 | ||
2a592bec DA |
4703 | static enum drm_connector_status |
4704 | g4x_dp_detect(struct intel_dp *intel_dp) | |
4705 | { | |
4706 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4707 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2a592bec DA |
4708 | |
4709 | /* Can't disconnect eDP, but you can close the lid... */ | |
4710 | if (is_edp(intel_dp)) { | |
4711 | enum drm_connector_status status; | |
4712 | ||
4713 | status = intel_panel_detect(dev); | |
4714 | if (status == connector_status_unknown) | |
4715 | status = connector_status_connected; | |
4716 | return status; | |
4717 | } | |
4718 | ||
7e66bcf2 | 4719 | if (!intel_digital_port_connected(dev->dev_private, intel_dig_port)) |
a4fc5ed6 KP |
4720 | return connector_status_disconnected; |
4721 | ||
26d61aad | 4722 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
4723 | } |
4724 | ||
8c241fef | 4725 | static struct edid * |
beb60608 | 4726 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4727 | { |
beb60608 | 4728 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4729 | |
9cd300e0 JN |
4730 | /* use cached edid if we have one */ |
4731 | if (intel_connector->edid) { | |
9cd300e0 JN |
4732 | /* invalid edid */ |
4733 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4734 | return NULL; |
4735 | ||
55e9edeb | 4736 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4737 | } else |
4738 | return drm_get_edid(&intel_connector->base, | |
4739 | &intel_dp->aux.ddc); | |
4740 | } | |
8c241fef | 4741 | |
beb60608 CW |
4742 | static void |
4743 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4744 | { | |
4745 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4746 | struct edid *edid; | |
8c241fef | 4747 | |
beb60608 CW |
4748 | edid = intel_dp_get_edid(intel_dp); |
4749 | intel_connector->detect_edid = edid; | |
4750 | ||
4751 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4752 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4753 | else | |
4754 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4755 | } |
4756 | ||
beb60608 CW |
4757 | static void |
4758 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4759 | { |
beb60608 | 4760 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4761 | |
beb60608 CW |
4762 | kfree(intel_connector->detect_edid); |
4763 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4764 | |
beb60608 CW |
4765 | intel_dp->has_audio = false; |
4766 | } | |
d6f24d0f | 4767 | |
beb60608 CW |
4768 | static enum intel_display_power_domain |
4769 | intel_dp_power_get(struct intel_dp *dp) | |
4770 | { | |
4771 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4772 | enum intel_display_power_domain power_domain; | |
4773 | ||
4774 | power_domain = intel_display_port_power_domain(encoder); | |
4775 | intel_display_power_get(to_i915(encoder->base.dev), power_domain); | |
4776 | ||
4777 | return power_domain; | |
4778 | } | |
d6f24d0f | 4779 | |
beb60608 CW |
4780 | static void |
4781 | intel_dp_power_put(struct intel_dp *dp, | |
4782 | enum intel_display_power_domain power_domain) | |
4783 | { | |
4784 | struct intel_encoder *encoder = &dp_to_dig_port(dp)->base; | |
4785 | intel_display_power_put(to_i915(encoder->base.dev), power_domain); | |
8c241fef KP |
4786 | } |
4787 | ||
a9756bb5 ZW |
4788 | static enum drm_connector_status |
4789 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4790 | { | |
4791 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
4792 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4793 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4794 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4795 | enum drm_connector_status status; |
671dedd2 | 4796 | enum intel_display_power_domain power_domain; |
0e32b39c | 4797 | bool ret; |
09b1eb13 | 4798 | u8 sink_irq_vector; |
a9756bb5 | 4799 | |
164c8598 | 4800 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 4801 | connector->base.id, connector->name); |
beb60608 | 4802 | intel_dp_unset_edid(intel_dp); |
164c8598 | 4803 | |
0e32b39c DA |
4804 | if (intel_dp->is_mst) { |
4805 | /* MST devices are disconnected from a monitor POV */ | |
4806 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4807 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
beb60608 | 4808 | return connector_status_disconnected; |
0e32b39c DA |
4809 | } |
4810 | ||
beb60608 | 4811 | power_domain = intel_dp_power_get(intel_dp); |
a9756bb5 | 4812 | |
d410b56d CW |
4813 | /* Can't disconnect eDP, but you can close the lid... */ |
4814 | if (is_edp(intel_dp)) | |
4815 | status = edp_detect(intel_dp); | |
4816 | else if (HAS_PCH_SPLIT(dev)) | |
a9756bb5 ZW |
4817 | status = ironlake_dp_detect(intel_dp); |
4818 | else | |
4819 | status = g4x_dp_detect(intel_dp); | |
4820 | if (status != connector_status_connected) | |
c8c8fb33 | 4821 | goto out; |
a9756bb5 | 4822 | |
0d198328 AJ |
4823 | intel_dp_probe_oui(intel_dp); |
4824 | ||
0e32b39c DA |
4825 | ret = intel_dp_probe_mst(intel_dp); |
4826 | if (ret) { | |
4827 | /* if we are in MST mode then this connector | |
4828 | won't appear connected or have anything with EDID on it */ | |
4829 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4830 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4831 | status = connector_status_disconnected; | |
4832 | goto out; | |
4833 | } | |
4834 | ||
beb60608 | 4835 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4836 | |
d63885da PZ |
4837 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
4838 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
4839 | status = connector_status_connected; |
4840 | ||
09b1eb13 TP |
4841 | /* Try to read the source of the interrupt */ |
4842 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
4843 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
4844 | /* Clear interrupt source */ | |
4845 | drm_dp_dpcd_writeb(&intel_dp->aux, | |
4846 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4847 | sink_irq_vector); | |
4848 | ||
4849 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4850 | intel_dp_handle_test_request(intel_dp); | |
4851 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4852 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4853 | } | |
4854 | ||
c8c8fb33 | 4855 | out: |
beb60608 | 4856 | intel_dp_power_put(intel_dp, power_domain); |
c8c8fb33 | 4857 | return status; |
a4fc5ed6 KP |
4858 | } |
4859 | ||
beb60608 CW |
4860 | static void |
4861 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4862 | { |
df0e9248 | 4863 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4864 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
671dedd2 | 4865 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4866 | |
beb60608 CW |
4867 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4868 | connector->base.id, connector->name); | |
4869 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4870 | |
beb60608 CW |
4871 | if (connector->status != connector_status_connected) |
4872 | return; | |
671dedd2 | 4873 | |
beb60608 CW |
4874 | power_domain = intel_dp_power_get(intel_dp); |
4875 | ||
4876 | intel_dp_set_edid(intel_dp); | |
4877 | ||
4878 | intel_dp_power_put(intel_dp, power_domain); | |
4879 | ||
4880 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4881 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
4882 | } | |
4883 | ||
4884 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4885 | { | |
4886 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4887 | struct edid *edid; | |
4888 | ||
4889 | edid = intel_connector->detect_edid; | |
4890 | if (edid) { | |
4891 | int ret = intel_connector_update_modes(connector, edid); | |
4892 | if (ret) | |
4893 | return ret; | |
4894 | } | |
32f9d658 | 4895 | |
f8779fda | 4896 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4897 | if (is_edp(intel_attached_dp(connector)) && |
4898 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4899 | struct drm_display_mode *mode; |
beb60608 CW |
4900 | |
4901 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4902 | intel_connector->panel.fixed_mode); |
f8779fda | 4903 | if (mode) { |
32f9d658 ZW |
4904 | drm_mode_probed_add(connector, mode); |
4905 | return 1; | |
4906 | } | |
4907 | } | |
beb60608 | 4908 | |
32f9d658 | 4909 | return 0; |
a4fc5ed6 KP |
4910 | } |
4911 | ||
1aad7ac0 CW |
4912 | static bool |
4913 | intel_dp_detect_audio(struct drm_connector *connector) | |
4914 | { | |
1aad7ac0 | 4915 | bool has_audio = false; |
beb60608 | 4916 | struct edid *edid; |
1aad7ac0 | 4917 | |
beb60608 CW |
4918 | edid = to_intel_connector(connector)->detect_edid; |
4919 | if (edid) | |
1aad7ac0 | 4920 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4921 | |
1aad7ac0 CW |
4922 | return has_audio; |
4923 | } | |
4924 | ||
f684960e CW |
4925 | static int |
4926 | intel_dp_set_property(struct drm_connector *connector, | |
4927 | struct drm_property *property, | |
4928 | uint64_t val) | |
4929 | { | |
e953fd7b | 4930 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 4931 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4932 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4933 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4934 | int ret; |
4935 | ||
662595df | 4936 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4937 | if (ret) |
4938 | return ret; | |
4939 | ||
3f43c48d | 4940 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4941 | int i = val; |
4942 | bool has_audio; | |
4943 | ||
4944 | if (i == intel_dp->force_audio) | |
f684960e CW |
4945 | return 0; |
4946 | ||
1aad7ac0 | 4947 | intel_dp->force_audio = i; |
f684960e | 4948 | |
c3e5f67b | 4949 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4950 | has_audio = intel_dp_detect_audio(connector); |
4951 | else | |
c3e5f67b | 4952 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4953 | |
4954 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4955 | return 0; |
4956 | ||
1aad7ac0 | 4957 | intel_dp->has_audio = has_audio; |
f684960e CW |
4958 | goto done; |
4959 | } | |
4960 | ||
e953fd7b | 4961 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 | 4962 | bool old_auto = intel_dp->color_range_auto; |
0f2a2a75 | 4963 | bool old_range = intel_dp->limited_color_range; |
ae4edb80 | 4964 | |
55bc60db VS |
4965 | switch (val) { |
4966 | case INTEL_BROADCAST_RGB_AUTO: | |
4967 | intel_dp->color_range_auto = true; | |
4968 | break; | |
4969 | case INTEL_BROADCAST_RGB_FULL: | |
4970 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4971 | intel_dp->limited_color_range = false; |
55bc60db VS |
4972 | break; |
4973 | case INTEL_BROADCAST_RGB_LIMITED: | |
4974 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4975 | intel_dp->limited_color_range = true; |
55bc60db VS |
4976 | break; |
4977 | default: | |
4978 | return -EINVAL; | |
4979 | } | |
ae4edb80 DV |
4980 | |
4981 | if (old_auto == intel_dp->color_range_auto && | |
0f2a2a75 | 4982 | old_range == intel_dp->limited_color_range) |
ae4edb80 DV |
4983 | return 0; |
4984 | ||
e953fd7b CW |
4985 | goto done; |
4986 | } | |
4987 | ||
53b41837 YN |
4988 | if (is_edp(intel_dp) && |
4989 | property == connector->dev->mode_config.scaling_mode_property) { | |
4990 | if (val == DRM_MODE_SCALE_NONE) { | |
4991 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4992 | return -EINVAL; | |
4993 | } | |
4994 | ||
4995 | if (intel_connector->panel.fitting_mode == val) { | |
4996 | /* the eDP scaling property is not changed */ | |
4997 | return 0; | |
4998 | } | |
4999 | intel_connector->panel.fitting_mode = val; | |
5000 | ||
5001 | goto done; | |
5002 | } | |
5003 | ||
f684960e CW |
5004 | return -EINVAL; |
5005 | ||
5006 | done: | |
c0c36b94 CW |
5007 | if (intel_encoder->base.crtc) |
5008 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
5009 | |
5010 | return 0; | |
5011 | } | |
5012 | ||
a4fc5ed6 | 5013 | static void |
73845adf | 5014 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 5015 | { |
1d508706 | 5016 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 5017 | |
10e972d3 | 5018 | kfree(intel_connector->detect_edid); |
beb60608 | 5019 | |
9cd300e0 JN |
5020 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
5021 | kfree(intel_connector->edid); | |
5022 | ||
acd8db10 PZ |
5023 | /* Can't call is_edp() since the encoder may have been destroyed |
5024 | * already. */ | |
5025 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 5026 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 5027 | |
a4fc5ed6 | 5028 | drm_connector_cleanup(connector); |
55f78c43 | 5029 | kfree(connector); |
a4fc5ed6 KP |
5030 | } |
5031 | ||
00c09d70 | 5032 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 5033 | { |
da63a9f2 PZ |
5034 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
5035 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 5036 | |
4f71d0cb | 5037 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 5038 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
5039 | if (is_edp(intel_dp)) { |
5040 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
5041 | /* |
5042 | * vdd might still be enabled do to the delayed vdd off. | |
5043 | * Make sure vdd is actually turned off here. | |
5044 | */ | |
773538e8 | 5045 | pps_lock(intel_dp); |
4be73780 | 5046 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
5047 | pps_unlock(intel_dp); |
5048 | ||
01527b31 CT |
5049 | if (intel_dp->edp_notifier.notifier_call) { |
5050 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
5051 | intel_dp->edp_notifier.notifier_call = NULL; | |
5052 | } | |
bd943159 | 5053 | } |
c8bd0e49 | 5054 | drm_encoder_cleanup(encoder); |
da63a9f2 | 5055 | kfree(intel_dig_port); |
24d05927 DV |
5056 | } |
5057 | ||
07f9cd0b ID |
5058 | static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
5059 | { | |
5060 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
5061 | ||
5062 | if (!is_edp(intel_dp)) | |
5063 | return; | |
5064 | ||
951468f3 VS |
5065 | /* |
5066 | * vdd might still be enabled do to the delayed vdd off. | |
5067 | * Make sure vdd is actually turned off here. | |
5068 | */ | |
afa4e53a | 5069 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 5070 | pps_lock(intel_dp); |
07f9cd0b | 5071 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 5072 | pps_unlock(intel_dp); |
07f9cd0b ID |
5073 | } |
5074 | ||
49e6bc51 VS |
5075 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
5076 | { | |
5077 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5078 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
5079 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5080 | enum intel_display_power_domain power_domain; | |
5081 | ||
5082 | lockdep_assert_held(&dev_priv->pps_mutex); | |
5083 | ||
5084 | if (!edp_have_panel_vdd(intel_dp)) | |
5085 | return; | |
5086 | ||
5087 | /* | |
5088 | * The VDD bit needs a power domain reference, so if the bit is | |
5089 | * already enabled when we boot or resume, grab this reference and | |
5090 | * schedule a vdd off, so we don't hold on to the reference | |
5091 | * indefinitely. | |
5092 | */ | |
5093 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
5094 | power_domain = intel_display_port_power_domain(&intel_dig_port->base); | |
5095 | intel_display_power_get(dev_priv, power_domain); | |
5096 | ||
5097 | edp_panel_vdd_schedule_off(intel_dp); | |
5098 | } | |
5099 | ||
6d93c0c4 ID |
5100 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
5101 | { | |
49e6bc51 VS |
5102 | struct intel_dp *intel_dp; |
5103 | ||
5104 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
5105 | return; | |
5106 | ||
5107 | intel_dp = enc_to_intel_dp(encoder); | |
5108 | ||
5109 | pps_lock(intel_dp); | |
5110 | ||
5111 | /* | |
5112 | * Read out the current power sequencer assignment, | |
5113 | * in case the BIOS did something with it. | |
5114 | */ | |
5115 | if (IS_VALLEYVIEW(encoder->dev)) | |
5116 | vlv_initial_power_sequencer_setup(intel_dp); | |
5117 | ||
5118 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5119 | ||
5120 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
5121 | } |
5122 | ||
a4fc5ed6 | 5123 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
4d688a2a | 5124 | .dpms = drm_atomic_helper_connector_dpms, |
a4fc5ed6 | 5125 | .detect = intel_dp_detect, |
beb60608 | 5126 | .force = intel_dp_force, |
a4fc5ed6 | 5127 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 5128 | .set_property = intel_dp_set_property, |
2545e4a6 | 5129 | .atomic_get_property = intel_connector_atomic_get_property, |
73845adf | 5130 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 5131 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 5132 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
a4fc5ed6 KP |
5133 | }; |
5134 | ||
5135 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
5136 | .get_modes = intel_dp_get_modes, | |
5137 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 5138 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
5139 | }; |
5140 | ||
a4fc5ed6 | 5141 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 5142 | .reset = intel_dp_encoder_reset, |
24d05927 | 5143 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
5144 | }; |
5145 | ||
b2c5c181 | 5146 | enum irqreturn |
13cf5504 DA |
5147 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
5148 | { | |
5149 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 5150 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c DA |
5151 | struct drm_device *dev = intel_dig_port->base.base.dev; |
5152 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1c767b33 | 5153 | enum intel_display_power_domain power_domain; |
b2c5c181 | 5154 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 5155 | |
0e32b39c DA |
5156 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) |
5157 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 5158 | |
7a7f84cc VS |
5159 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
5160 | /* | |
5161 | * vdd off can generate a long pulse on eDP which | |
5162 | * would require vdd on to handle it, and thus we | |
5163 | * would end up in an endless cycle of | |
5164 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
5165 | */ | |
5166 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
5167 | port_name(intel_dig_port->port)); | |
a8b3d52f | 5168 | return IRQ_HANDLED; |
7a7f84cc VS |
5169 | } |
5170 | ||
26fbb774 VS |
5171 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
5172 | port_name(intel_dig_port->port), | |
0e32b39c | 5173 | long_hpd ? "long" : "short"); |
13cf5504 | 5174 | |
1c767b33 ID |
5175 | power_domain = intel_display_port_power_domain(intel_encoder); |
5176 | intel_display_power_get(dev_priv, power_domain); | |
5177 | ||
0e32b39c | 5178 | if (long_hpd) { |
5fa836a9 MK |
5179 | /* indicate that we need to restart link training */ |
5180 | intel_dp->train_set_valid = false; | |
2a592bec | 5181 | |
7e66bcf2 JN |
5182 | if (!intel_digital_port_connected(dev_priv, intel_dig_port)) |
5183 | goto mst_fail; | |
0e32b39c DA |
5184 | |
5185 | if (!intel_dp_get_dpcd(intel_dp)) { | |
5186 | goto mst_fail; | |
5187 | } | |
5188 | ||
5189 | intel_dp_probe_oui(intel_dp); | |
5190 | ||
d14e7b6d VS |
5191 | if (!intel_dp_probe_mst(intel_dp)) { |
5192 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
5193 | intel_dp_check_link_status(intel_dp); | |
5194 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
0e32b39c | 5195 | goto mst_fail; |
d14e7b6d | 5196 | } |
0e32b39c DA |
5197 | } else { |
5198 | if (intel_dp->is_mst) { | |
1c767b33 | 5199 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) |
0e32b39c DA |
5200 | goto mst_fail; |
5201 | } | |
5202 | ||
5203 | if (!intel_dp->is_mst) { | |
5b215bcf | 5204 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
0e32b39c | 5205 | intel_dp_check_link_status(intel_dp); |
5b215bcf | 5206 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
0e32b39c DA |
5207 | } |
5208 | } | |
b2c5c181 DV |
5209 | |
5210 | ret = IRQ_HANDLED; | |
5211 | ||
1c767b33 | 5212 | goto put_power; |
0e32b39c DA |
5213 | mst_fail: |
5214 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
5215 | if (intel_dp->is_mst) { | |
5216 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
5217 | intel_dp->is_mst = false; | |
5218 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
5219 | } | |
1c767b33 ID |
5220 | put_power: |
5221 | intel_display_power_put(dev_priv, power_domain); | |
5222 | ||
5223 | return ret; | |
13cf5504 DA |
5224 | } |
5225 | ||
e3421a18 ZW |
5226 | /* Return which DP Port should be selected for Transcoder DP control */ |
5227 | int | |
0206e353 | 5228 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
5229 | { |
5230 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
5231 | struct intel_encoder *intel_encoder; |
5232 | struct intel_dp *intel_dp; | |
e3421a18 | 5233 | |
fa90ecef PZ |
5234 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
5235 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 5236 | |
fa90ecef PZ |
5237 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
5238 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 5239 | return intel_dp->output_reg; |
e3421a18 | 5240 | } |
ea5b213a | 5241 | |
e3421a18 ZW |
5242 | return -1; |
5243 | } | |
5244 | ||
477ec328 | 5245 | /* check the VBT to see whether the eDP is on another port */ |
5d8a7752 | 5246 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
5247 | { |
5248 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 5249 | union child_device_config *p_child; |
36e83a18 | 5250 | int i; |
5d8a7752 | 5251 | static const short port_mapping[] = { |
477ec328 RV |
5252 | [PORT_B] = DVO_PORT_DPB, |
5253 | [PORT_C] = DVO_PORT_DPC, | |
5254 | [PORT_D] = DVO_PORT_DPD, | |
5255 | [PORT_E] = DVO_PORT_DPE, | |
5d8a7752 | 5256 | }; |
36e83a18 | 5257 | |
53ce81a7 VS |
5258 | /* |
5259 | * eDP not supported on g4x. so bail out early just | |
5260 | * for a bit extra safety in case the VBT is bonkers. | |
5261 | */ | |
5262 | if (INTEL_INFO(dev)->gen < 5) | |
5263 | return false; | |
5264 | ||
3b32a35b VS |
5265 | if (port == PORT_A) |
5266 | return true; | |
5267 | ||
41aa3448 | 5268 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
5269 | return false; |
5270 | ||
41aa3448 RV |
5271 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
5272 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 5273 | |
5d8a7752 | 5274 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
5275 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
5276 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
5277 | return true; |
5278 | } | |
5279 | return false; | |
5280 | } | |
5281 | ||
0e32b39c | 5282 | void |
f684960e CW |
5283 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
5284 | { | |
53b41837 YN |
5285 | struct intel_connector *intel_connector = to_intel_connector(connector); |
5286 | ||
3f43c48d | 5287 | intel_attach_force_audio_property(connector); |
e953fd7b | 5288 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 5289 | intel_dp->color_range_auto = true; |
53b41837 YN |
5290 | |
5291 | if (is_edp(intel_dp)) { | |
5292 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
5293 | drm_object_attach_property( |
5294 | &connector->base, | |
53b41837 | 5295 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
5296 | DRM_MODE_SCALE_ASPECT); |
5297 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 5298 | } |
f684960e CW |
5299 | } |
5300 | ||
dada1a9f ID |
5301 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
5302 | { | |
5303 | intel_dp->last_power_cycle = jiffies; | |
5304 | intel_dp->last_power_on = jiffies; | |
5305 | intel_dp->last_backlight_off = jiffies; | |
5306 | } | |
5307 | ||
67a54566 DV |
5308 | static void |
5309 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 5310 | struct intel_dp *intel_dp) |
67a54566 DV |
5311 | { |
5312 | struct drm_i915_private *dev_priv = dev->dev_private; | |
36b5f425 VS |
5313 | struct edp_power_seq cur, vbt, spec, |
5314 | *final = &intel_dp->pps_delays; | |
b0a08bec VK |
5315 | u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; |
5316 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg = 0; | |
453c5420 | 5317 | |
e39b999a VS |
5318 | lockdep_assert_held(&dev_priv->pps_mutex); |
5319 | ||
81ddbc69 VS |
5320 | /* already initialized? */ |
5321 | if (final->t11_t12 != 0) | |
5322 | return; | |
5323 | ||
b0a08bec VK |
5324 | if (IS_BROXTON(dev)) { |
5325 | /* | |
5326 | * TODO: BXT has 2 sets of PPS registers. | |
5327 | * Correct Register for Broxton need to be identified | |
5328 | * using VBT. hardcoding for now | |
5329 | */ | |
5330 | pp_ctrl_reg = BXT_PP_CONTROL(0); | |
5331 | pp_on_reg = BXT_PP_ON_DELAYS(0); | |
5332 | pp_off_reg = BXT_PP_OFF_DELAYS(0); | |
5333 | } else if (HAS_PCH_SPLIT(dev)) { | |
bf13e81b | 5334 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
5335 | pp_on_reg = PCH_PP_ON_DELAYS; |
5336 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5337 | pp_div_reg = PCH_PP_DIVISOR; | |
5338 | } else { | |
bf13e81b JN |
5339 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5340 | ||
5341 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
5342 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5343 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5344 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 5345 | } |
67a54566 DV |
5346 | |
5347 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
5348 | * the very first thing. */ | |
b0a08bec | 5349 | pp_ctl = ironlake_get_pp_control(intel_dp); |
67a54566 | 5350 | |
453c5420 JB |
5351 | pp_on = I915_READ(pp_on_reg); |
5352 | pp_off = I915_READ(pp_off_reg); | |
b0a08bec VK |
5353 | if (!IS_BROXTON(dev)) { |
5354 | I915_WRITE(pp_ctrl_reg, pp_ctl); | |
5355 | pp_div = I915_READ(pp_div_reg); | |
5356 | } | |
67a54566 DV |
5357 | |
5358 | /* Pull timing values out of registers */ | |
5359 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
5360 | PANEL_POWER_UP_DELAY_SHIFT; | |
5361 | ||
5362 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
5363 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
5364 | ||
5365 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
5366 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
5367 | ||
5368 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
5369 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
5370 | ||
b0a08bec VK |
5371 | if (IS_BROXTON(dev)) { |
5372 | u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> | |
5373 | BXT_POWER_CYCLE_DELAY_SHIFT; | |
5374 | if (tmp > 0) | |
5375 | cur.t11_t12 = (tmp - 1) * 1000; | |
5376 | else | |
5377 | cur.t11_t12 = 0; | |
5378 | } else { | |
5379 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
67a54566 | 5380 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; |
b0a08bec | 5381 | } |
67a54566 DV |
5382 | |
5383 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5384 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
5385 | ||
41aa3448 | 5386 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
5387 | |
5388 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
5389 | * our hw here, which are all in 100usec. */ | |
5390 | spec.t1_t3 = 210 * 10; | |
5391 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
5392 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
5393 | spec.t10 = 500 * 10; | |
5394 | /* This one is special and actually in units of 100ms, but zero | |
5395 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
5396 | * table multiplies it with 1000 to make it in units of 100usec, | |
5397 | * too. */ | |
5398 | spec.t11_t12 = (510 + 100) * 10; | |
5399 | ||
5400 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
5401 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
5402 | ||
5403 | /* Use the max of the register settings and vbt. If both are | |
5404 | * unset, fall back to the spec limits. */ | |
36b5f425 | 5405 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
5406 | spec.field : \ |
5407 | max(cur.field, vbt.field)) | |
5408 | assign_final(t1_t3); | |
5409 | assign_final(t8); | |
5410 | assign_final(t9); | |
5411 | assign_final(t10); | |
5412 | assign_final(t11_t12); | |
5413 | #undef assign_final | |
5414 | ||
36b5f425 | 5415 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
5416 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5417 | intel_dp->backlight_on_delay = get_delay(t8); | |
5418 | intel_dp->backlight_off_delay = get_delay(t9); | |
5419 | intel_dp->panel_power_down_delay = get_delay(t10); | |
5420 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
5421 | #undef get_delay | |
5422 | ||
f30d26e4 JN |
5423 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
5424 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
5425 | intel_dp->panel_power_cycle_delay); | |
5426 | ||
5427 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
5428 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
f30d26e4 JN |
5429 | } |
5430 | ||
5431 | static void | |
5432 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 5433 | struct intel_dp *intel_dp) |
f30d26e4 JN |
5434 | { |
5435 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
5436 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
5437 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
b0a08bec | 5438 | int pp_on_reg, pp_off_reg, pp_div_reg = 0, pp_ctrl_reg; |
ad933b56 | 5439 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 5440 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 5441 | |
e39b999a | 5442 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 | 5443 | |
b0a08bec VK |
5444 | if (IS_BROXTON(dev)) { |
5445 | /* | |
5446 | * TODO: BXT has 2 sets of PPS registers. | |
5447 | * Correct Register for Broxton need to be identified | |
5448 | * using VBT. hardcoding for now | |
5449 | */ | |
5450 | pp_ctrl_reg = BXT_PP_CONTROL(0); | |
5451 | pp_on_reg = BXT_PP_ON_DELAYS(0); | |
5452 | pp_off_reg = BXT_PP_OFF_DELAYS(0); | |
5453 | ||
5454 | } else if (HAS_PCH_SPLIT(dev)) { | |
453c5420 JB |
5455 | pp_on_reg = PCH_PP_ON_DELAYS; |
5456 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
5457 | pp_div_reg = PCH_PP_DIVISOR; | |
5458 | } else { | |
bf13e81b JN |
5459 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
5460 | ||
5461 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
5462 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
5463 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
5464 | } |
5465 | ||
b2f19d1a PZ |
5466 | /* |
5467 | * And finally store the new values in the power sequencer. The | |
5468 | * backlight delays are set to 1 because we do manual waits on them. For | |
5469 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
5470 | * we'll end up waiting for the backlight off delay twice: once when we | |
5471 | * do the manual sleep, and once when we disable the panel and wait for | |
5472 | * the PP_STATUS bit to become zero. | |
5473 | */ | |
f30d26e4 | 5474 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
5475 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5476 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 5477 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
5478 | /* Compute the divisor for the pp clock, simply match the Bspec |
5479 | * formula. */ | |
b0a08bec VK |
5480 | if (IS_BROXTON(dev)) { |
5481 | pp_div = I915_READ(pp_ctrl_reg); | |
5482 | pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; | |
5483 | pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) | |
5484 | << BXT_POWER_CYCLE_DELAY_SHIFT); | |
5485 | } else { | |
5486 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; | |
5487 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) | |
5488 | << PANEL_POWER_CYCLE_DELAY_SHIFT); | |
5489 | } | |
67a54566 DV |
5490 | |
5491 | /* Haswell doesn't have any port selection bits for the panel | |
5492 | * power sequencer any more. */ | |
bc7d38a4 | 5493 | if (IS_VALLEYVIEW(dev)) { |
ad933b56 | 5494 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 5495 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 5496 | if (port == PORT_A) |
a24c144c | 5497 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 5498 | else |
a24c144c | 5499 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
5500 | } |
5501 | ||
453c5420 JB |
5502 | pp_on |= port_sel; |
5503 | ||
5504 | I915_WRITE(pp_on_reg, pp_on); | |
5505 | I915_WRITE(pp_off_reg, pp_off); | |
b0a08bec VK |
5506 | if (IS_BROXTON(dev)) |
5507 | I915_WRITE(pp_ctrl_reg, pp_div); | |
5508 | else | |
5509 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 5510 | |
67a54566 | 5511 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
5512 | I915_READ(pp_on_reg), |
5513 | I915_READ(pp_off_reg), | |
b0a08bec VK |
5514 | IS_BROXTON(dev) ? |
5515 | (I915_READ(pp_ctrl_reg) & BXT_POWER_CYCLE_DELAY_MASK) : | |
453c5420 | 5516 | I915_READ(pp_div_reg)); |
f684960e CW |
5517 | } |
5518 | ||
b33a2815 VK |
5519 | /** |
5520 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
5521 | * @dev: DRM device | |
5522 | * @refresh_rate: RR to be programmed | |
5523 | * | |
5524 | * This function gets called when refresh rate (RR) has to be changed from | |
5525 | * one frequency to another. Switches can be between high and low RR | |
5526 | * supported by the panel or to any other RR based on media playback (in | |
5527 | * this case, RR value needs to be passed from user space). | |
5528 | * | |
5529 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
5530 | */ | |
96178eeb | 5531 | static void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
439d7ac0 PB |
5532 | { |
5533 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5534 | struct intel_encoder *encoder; | |
96178eeb VK |
5535 | struct intel_digital_port *dig_port = NULL; |
5536 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
5cec258b | 5537 | struct intel_crtc_state *config = NULL; |
439d7ac0 | 5538 | struct intel_crtc *intel_crtc = NULL; |
439d7ac0 | 5539 | u32 reg, val; |
96178eeb | 5540 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
5541 | |
5542 | if (refresh_rate <= 0) { | |
5543 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
5544 | return; | |
5545 | } | |
5546 | ||
96178eeb VK |
5547 | if (intel_dp == NULL) { |
5548 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
5549 | return; |
5550 | } | |
5551 | ||
1fcc9d1c | 5552 | /* |
e4d59f6b RV |
5553 | * FIXME: This needs proper synchronization with psr state for some |
5554 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 5555 | */ |
439d7ac0 | 5556 | |
96178eeb VK |
5557 | dig_port = dp_to_dig_port(intel_dp); |
5558 | encoder = &dig_port->base; | |
723f9aab | 5559 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
439d7ac0 PB |
5560 | |
5561 | if (!intel_crtc) { | |
5562 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
5563 | return; | |
5564 | } | |
5565 | ||
6e3c9717 | 5566 | config = intel_crtc->config; |
439d7ac0 | 5567 | |
96178eeb | 5568 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
5569 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5570 | return; | |
5571 | } | |
5572 | ||
96178eeb VK |
5573 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5574 | refresh_rate) | |
439d7ac0 PB |
5575 | index = DRRS_LOW_RR; |
5576 | ||
96178eeb | 5577 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
5578 | DRM_DEBUG_KMS( |
5579 | "DRRS requested for previously set RR...ignoring\n"); | |
5580 | return; | |
5581 | } | |
5582 | ||
5583 | if (!intel_crtc->active) { | |
5584 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
5585 | return; | |
5586 | } | |
5587 | ||
44395bfe | 5588 | if (INTEL_INFO(dev)->gen >= 8 && !IS_CHERRYVIEW(dev)) { |
a4c30b1d VK |
5589 | switch (index) { |
5590 | case DRRS_HIGH_RR: | |
5591 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
5592 | break; | |
5593 | case DRRS_LOW_RR: | |
5594 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
5595 | break; | |
5596 | case DRRS_MAX_RR: | |
5597 | default: | |
5598 | DRM_ERROR("Unsupported refreshrate type\n"); | |
5599 | } | |
5600 | } else if (INTEL_INFO(dev)->gen > 6) { | |
6e3c9717 | 5601 | reg = PIPECONF(intel_crtc->config->cpu_transcoder); |
439d7ac0 | 5602 | val = I915_READ(reg); |
a4c30b1d | 5603 | |
439d7ac0 | 5604 | if (index > DRRS_HIGH_RR) { |
6fa7aec1 VK |
5605 | if (IS_VALLEYVIEW(dev)) |
5606 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5607 | else | |
5608 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 5609 | } else { |
6fa7aec1 VK |
5610 | if (IS_VALLEYVIEW(dev)) |
5611 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; | |
5612 | else | |
5613 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5614 | } |
5615 | I915_WRITE(reg, val); | |
5616 | } | |
5617 | ||
4e9ac947 VK |
5618 | dev_priv->drrs.refresh_rate_type = index; |
5619 | ||
5620 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5621 | } | |
5622 | ||
b33a2815 VK |
5623 | /** |
5624 | * intel_edp_drrs_enable - init drrs struct if supported | |
5625 | * @intel_dp: DP struct | |
5626 | * | |
5627 | * Initializes frontbuffer_bits and drrs.dp | |
5628 | */ | |
c395578e VK |
5629 | void intel_edp_drrs_enable(struct intel_dp *intel_dp) |
5630 | { | |
5631 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5632 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5633 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5634 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5635 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5636 | ||
5637 | if (!intel_crtc->config->has_drrs) { | |
5638 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); | |
5639 | return; | |
5640 | } | |
5641 | ||
5642 | mutex_lock(&dev_priv->drrs.mutex); | |
5643 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5644 | DRM_ERROR("DRRS already enabled\n"); | |
5645 | goto unlock; | |
5646 | } | |
5647 | ||
5648 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5649 | ||
5650 | dev_priv->drrs.dp = intel_dp; | |
5651 | ||
5652 | unlock: | |
5653 | mutex_unlock(&dev_priv->drrs.mutex); | |
5654 | } | |
5655 | ||
b33a2815 VK |
5656 | /** |
5657 | * intel_edp_drrs_disable - Disable DRRS | |
5658 | * @intel_dp: DP struct | |
5659 | * | |
5660 | */ | |
c395578e VK |
5661 | void intel_edp_drrs_disable(struct intel_dp *intel_dp) |
5662 | { | |
5663 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
5664 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5665 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
5666 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
5667 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
5668 | ||
5669 | if (!intel_crtc->config->has_drrs) | |
5670 | return; | |
5671 | ||
5672 | mutex_lock(&dev_priv->drrs.mutex); | |
5673 | if (!dev_priv->drrs.dp) { | |
5674 | mutex_unlock(&dev_priv->drrs.mutex); | |
5675 | return; | |
5676 | } | |
5677 | ||
5678 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
5679 | intel_dp_set_drrs_state(dev_priv->dev, | |
5680 | intel_dp->attached_connector->panel. | |
5681 | fixed_mode->vrefresh); | |
5682 | ||
5683 | dev_priv->drrs.dp = NULL; | |
5684 | mutex_unlock(&dev_priv->drrs.mutex); | |
5685 | ||
5686 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5687 | } | |
5688 | ||
4e9ac947 VK |
5689 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5690 | { | |
5691 | struct drm_i915_private *dev_priv = | |
5692 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5693 | struct intel_dp *intel_dp; | |
5694 | ||
5695 | mutex_lock(&dev_priv->drrs.mutex); | |
5696 | ||
5697 | intel_dp = dev_priv->drrs.dp; | |
5698 | ||
5699 | if (!intel_dp) | |
5700 | goto unlock; | |
5701 | ||
439d7ac0 | 5702 | /* |
4e9ac947 VK |
5703 | * The delayed work can race with an invalidate hence we need to |
5704 | * recheck. | |
439d7ac0 PB |
5705 | */ |
5706 | ||
4e9ac947 VK |
5707 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5708 | goto unlock; | |
439d7ac0 | 5709 | |
4e9ac947 VK |
5710 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) |
5711 | intel_dp_set_drrs_state(dev_priv->dev, | |
5712 | intel_dp->attached_connector->panel. | |
5713 | downclock_mode->vrefresh); | |
439d7ac0 | 5714 | |
4e9ac947 | 5715 | unlock: |
4e9ac947 | 5716 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5717 | } |
5718 | ||
b33a2815 | 5719 | /** |
0ddfd203 | 5720 | * intel_edp_drrs_invalidate - Disable Idleness DRRS |
b33a2815 VK |
5721 | * @dev: DRM device |
5722 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5723 | * | |
0ddfd203 R |
5724 | * This function gets called everytime rendering on the given planes start. |
5725 | * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR). | |
b33a2815 VK |
5726 | * |
5727 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5728 | */ | |
a93fad0f VK |
5729 | void intel_edp_drrs_invalidate(struct drm_device *dev, |
5730 | unsigned frontbuffer_bits) | |
5731 | { | |
5732 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5733 | struct drm_crtc *crtc; | |
5734 | enum pipe pipe; | |
5735 | ||
9da7d693 | 5736 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5737 | return; |
5738 | ||
88f933a8 | 5739 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5740 | |
a93fad0f | 5741 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5742 | if (!dev_priv->drrs.dp) { |
5743 | mutex_unlock(&dev_priv->drrs.mutex); | |
5744 | return; | |
5745 | } | |
5746 | ||
a93fad0f VK |
5747 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5748 | pipe = to_intel_crtc(crtc)->pipe; | |
5749 | ||
c1d038c6 DV |
5750 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
5751 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5752 | ||
0ddfd203 | 5753 | /* invalidate means busy screen hence upclock */ |
c1d038c6 | 5754 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
a93fad0f VK |
5755 | intel_dp_set_drrs_state(dev_priv->dev, |
5756 | dev_priv->drrs.dp->attached_connector->panel. | |
5757 | fixed_mode->vrefresh); | |
a93fad0f | 5758 | |
a93fad0f VK |
5759 | mutex_unlock(&dev_priv->drrs.mutex); |
5760 | } | |
5761 | ||
b33a2815 | 5762 | /** |
0ddfd203 | 5763 | * intel_edp_drrs_flush - Restart Idleness DRRS |
b33a2815 VK |
5764 | * @dev: DRM device |
5765 | * @frontbuffer_bits: frontbuffer plane tracking bits | |
5766 | * | |
0ddfd203 R |
5767 | * This function gets called every time rendering on the given planes has |
5768 | * completed or flip on a crtc is completed. So DRRS should be upclocked | |
5769 | * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again, | |
5770 | * if no other planes are dirty. | |
b33a2815 VK |
5771 | * |
5772 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5773 | */ | |
a93fad0f VK |
5774 | void intel_edp_drrs_flush(struct drm_device *dev, |
5775 | unsigned frontbuffer_bits) | |
5776 | { | |
5777 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5778 | struct drm_crtc *crtc; | |
5779 | enum pipe pipe; | |
5780 | ||
9da7d693 | 5781 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5782 | return; |
5783 | ||
88f933a8 | 5784 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5785 | |
a93fad0f | 5786 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5787 | if (!dev_priv->drrs.dp) { |
5788 | mutex_unlock(&dev_priv->drrs.mutex); | |
5789 | return; | |
5790 | } | |
5791 | ||
a93fad0f VK |
5792 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5793 | pipe = to_intel_crtc(crtc)->pipe; | |
c1d038c6 DV |
5794 | |
5795 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
a93fad0f VK |
5796 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; |
5797 | ||
0ddfd203 | 5798 | /* flush means busy screen hence upclock */ |
c1d038c6 | 5799 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
0ddfd203 R |
5800 | intel_dp_set_drrs_state(dev_priv->dev, |
5801 | dev_priv->drrs.dp->attached_connector->panel. | |
5802 | fixed_mode->vrefresh); | |
5803 | ||
5804 | /* | |
5805 | * flush also means no more activity hence schedule downclock, if all | |
5806 | * other fbs are quiescent too | |
5807 | */ | |
5808 | if (!dev_priv->drrs.busy_frontbuffer_bits) | |
a93fad0f VK |
5809 | schedule_delayed_work(&dev_priv->drrs.work, |
5810 | msecs_to_jiffies(1000)); | |
5811 | mutex_unlock(&dev_priv->drrs.mutex); | |
5812 | } | |
5813 | ||
b33a2815 VK |
5814 | /** |
5815 | * DOC: Display Refresh Rate Switching (DRRS) | |
5816 | * | |
5817 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5818 | * which enables swtching between low and high refresh rates, | |
5819 | * dynamically, based on the usage scenario. This feature is applicable | |
5820 | * for internal panels. | |
5821 | * | |
5822 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5823 | * would list multiple refresh rates for one resolution. | |
5824 | * | |
5825 | * DRRS is of 2 types - static and seamless. | |
5826 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5827 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5828 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5829 | * and can be used during normal system usage. This is done by programming | |
5830 | * certain registers. | |
5831 | * | |
5832 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5833 | * inputs from the panel spec. | |
5834 | * | |
5835 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5836 | * | |
5837 | * eDP DRRS:- | |
5838 | * The implementation is based on frontbuffer tracking implementation. | |
5839 | * When there is a disturbance on the screen triggered by user activity or a | |
5840 | * periodic system activity, DRRS is disabled (RR is changed to high RR). | |
5841 | * When there is no movement on screen, after a timeout of 1 second, a switch | |
5842 | * to low RR is made. | |
5843 | * For integration with frontbuffer tracking code, | |
5844 | * intel_edp_drrs_invalidate() and intel_edp_drrs_flush() are called. | |
5845 | * | |
5846 | * DRRS can be further extended to support other internal panels and also | |
5847 | * the scenario of video playback wherein RR is set based on the rate | |
5848 | * requested by userspace. | |
5849 | */ | |
5850 | ||
5851 | /** | |
5852 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5853 | * @intel_connector: eDP connector | |
5854 | * @fixed_mode: preferred mode of panel | |
5855 | * | |
5856 | * This function is called only once at driver load to initialize basic | |
5857 | * DRRS stuff. | |
5858 | * | |
5859 | * Returns: | |
5860 | * Downclock mode if panel supports it, else return NULL. | |
5861 | * DRRS support is determined by the presence of downclock mode (apart | |
5862 | * from VBT setting). | |
5863 | */ | |
4f9db5b5 | 5864 | static struct drm_display_mode * |
96178eeb VK |
5865 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5866 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5867 | { |
5868 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5869 | struct drm_device *dev = connector->dev; |
4f9db5b5 PB |
5870 | struct drm_i915_private *dev_priv = dev->dev_private; |
5871 | struct drm_display_mode *downclock_mode = NULL; | |
5872 | ||
9da7d693 DV |
5873 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5874 | mutex_init(&dev_priv->drrs.mutex); | |
5875 | ||
4f9db5b5 PB |
5876 | if (INTEL_INFO(dev)->gen <= 6) { |
5877 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5878 | return NULL; | |
5879 | } | |
5880 | ||
5881 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5882 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5883 | return NULL; |
5884 | } | |
5885 | ||
5886 | downclock_mode = intel_find_panel_downclock | |
5887 | (dev, fixed_mode, connector); | |
5888 | ||
5889 | if (!downclock_mode) { | |
a1d26342 | 5890 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5891 | return NULL; |
5892 | } | |
5893 | ||
96178eeb | 5894 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5895 | |
96178eeb | 5896 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5897 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5898 | return downclock_mode; |
5899 | } | |
5900 | ||
ed92f0b2 | 5901 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5902 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5903 | { |
5904 | struct drm_connector *connector = &intel_connector->base; | |
5905 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5906 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5907 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
5908 | struct drm_i915_private *dev_priv = dev->dev_private; |
5909 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 5910 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5911 | bool has_dpcd; |
5912 | struct drm_display_mode *scan; | |
5913 | struct edid *edid; | |
6517d273 | 5914 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 PZ |
5915 | |
5916 | if (!is_edp(intel_dp)) | |
5917 | return true; | |
5918 | ||
49e6bc51 VS |
5919 | pps_lock(intel_dp); |
5920 | intel_edp_panel_vdd_sanitize(intel_dp); | |
5921 | pps_unlock(intel_dp); | |
63635217 | 5922 | |
ed92f0b2 | 5923 | /* Cache DPCD and EDID for edp. */ |
ed92f0b2 | 5924 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
ed92f0b2 PZ |
5925 | |
5926 | if (has_dpcd) { | |
5927 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
5928 | dev_priv->no_aux_handshake = | |
5929 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
5930 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
5931 | } else { | |
5932 | /* if this fails, presume the device is a ghost */ | |
5933 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
5934 | return false; |
5935 | } | |
5936 | ||
5937 | /* We now know it's not a ghost, init power sequence regs. */ | |
773538e8 | 5938 | pps_lock(intel_dp); |
36b5f425 | 5939 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); |
773538e8 | 5940 | pps_unlock(intel_dp); |
ed92f0b2 | 5941 | |
060c8778 | 5942 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5943 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5944 | if (edid) { |
5945 | if (drm_add_edid_modes(connector, edid)) { | |
5946 | drm_mode_connector_update_edid_property(connector, | |
5947 | edid); | |
5948 | drm_edid_to_eld(connector, edid); | |
5949 | } else { | |
5950 | kfree(edid); | |
5951 | edid = ERR_PTR(-EINVAL); | |
5952 | } | |
5953 | } else { | |
5954 | edid = ERR_PTR(-ENOENT); | |
5955 | } | |
5956 | intel_connector->edid = edid; | |
5957 | ||
5958 | /* prefer fixed mode from EDID if available */ | |
5959 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5960 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5961 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5962 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5963 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5964 | break; |
5965 | } | |
5966 | } | |
5967 | ||
5968 | /* fallback to VBT if available for eDP */ | |
5969 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5970 | fixed_mode = drm_mode_duplicate(dev, | |
5971 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
5972 | if (fixed_mode) | |
5973 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
5974 | } | |
060c8778 | 5975 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5976 | |
01527b31 CT |
5977 | if (IS_VALLEYVIEW(dev)) { |
5978 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
5979 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5980 | |
5981 | /* | |
5982 | * Figure out the current pipe for the initial backlight setup. | |
5983 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5984 | * fails just assume pipe A. | |
5985 | */ | |
5986 | if (IS_CHERRYVIEW(dev)) | |
5987 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5988 | else | |
5989 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5990 | ||
5991 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5992 | pipe = intel_dp->pps_pipe; | |
5993 | ||
5994 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5995 | pipe = PIPE_A; | |
5996 | ||
5997 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5998 | pipe_name(pipe)); | |
01527b31 CT |
5999 | } |
6000 | ||
4f9db5b5 | 6001 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
5507faeb | 6002 | intel_connector->panel.backlight.power = intel_edp_backlight_power; |
6517d273 | 6003 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
6004 | |
6005 | return true; | |
6006 | } | |
6007 | ||
16c25533 | 6008 | bool |
f0fec3f2 PZ |
6009 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
6010 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 6011 | { |
f0fec3f2 PZ |
6012 | struct drm_connector *connector = &intel_connector->base; |
6013 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
6014 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
6015 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 6016 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 6017 | enum port port = intel_dig_port->port; |
0b99836f | 6018 | int type; |
a4fc5ed6 | 6019 | |
a4a5d2f8 VS |
6020 | intel_dp->pps_pipe = INVALID_PIPE; |
6021 | ||
ec5b01dd | 6022 | /* intel_dp vfuncs */ |
b6b5e383 DL |
6023 | if (INTEL_INFO(dev)->gen >= 9) |
6024 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
6025 | else if (IS_VALLEYVIEW(dev)) | |
ec5b01dd DL |
6026 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; |
6027 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
6028 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
6029 | else if (HAS_PCH_SPLIT(dev)) | |
6030 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
6031 | else | |
6032 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
6033 | ||
b9ca5fad DL |
6034 | if (INTEL_INFO(dev)->gen >= 9) |
6035 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
6036 | else | |
6037 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; | |
153b1100 | 6038 | |
0767935e DV |
6039 | /* Preserve the current hw state. */ |
6040 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 6041 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 6042 | |
3b32a35b | 6043 | if (intel_dp_is_edp(dev, port)) |
b329530c | 6044 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
6045 | else |
6046 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 6047 | |
f7d24902 ID |
6048 | /* |
6049 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
6050 | * for DP the encoder type can be set by the caller to | |
6051 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
6052 | */ | |
6053 | if (type == DRM_MODE_CONNECTOR_eDP) | |
6054 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
6055 | ||
c17ed5b5 VS |
6056 | /* eDP only on port B and/or C on vlv/chv */ |
6057 | if (WARN_ON(IS_VALLEYVIEW(dev) && is_edp(intel_dp) && | |
6058 | port != PORT_B && port != PORT_C)) | |
6059 | return false; | |
6060 | ||
e7281eab ID |
6061 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
6062 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
6063 | port_name(port)); | |
6064 | ||
b329530c | 6065 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
6066 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
6067 | ||
a4fc5ed6 KP |
6068 | connector->interlace_allowed = true; |
6069 | connector->doublescan_allowed = 0; | |
6070 | ||
f0fec3f2 | 6071 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 6072 | edp_panel_vdd_work); |
a4fc5ed6 | 6073 | |
df0e9248 | 6074 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 6075 | drm_connector_register(connector); |
a4fc5ed6 | 6076 | |
affa9354 | 6077 | if (HAS_DDI(dev)) |
bcbc889b PZ |
6078 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
6079 | else | |
6080 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 6081 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 6082 | |
0b99836f | 6083 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
6084 | switch (port) { |
6085 | case PORT_A: | |
1d843f9d | 6086 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
6087 | break; |
6088 | case PORT_B: | |
1d843f9d | 6089 | intel_encoder->hpd_pin = HPD_PORT_B; |
cf1d5883 SJ |
6090 | if (IS_BROXTON(dev_priv) && (INTEL_REVID(dev) < BXT_REVID_B0)) |
6091 | intel_encoder->hpd_pin = HPD_PORT_A; | |
ab9d7c30 PZ |
6092 | break; |
6093 | case PORT_C: | |
1d843f9d | 6094 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
6095 | break; |
6096 | case PORT_D: | |
1d843f9d | 6097 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 | 6098 | break; |
26951caf XZ |
6099 | case PORT_E: |
6100 | intel_encoder->hpd_pin = HPD_PORT_E; | |
6101 | break; | |
ab9d7c30 | 6102 | default: |
ad1c0b19 | 6103 | BUG(); |
5eb08b69 ZW |
6104 | } |
6105 | ||
dada1a9f | 6106 | if (is_edp(intel_dp)) { |
773538e8 | 6107 | pps_lock(intel_dp); |
1e74a324 VS |
6108 | intel_dp_init_panel_power_timestamps(intel_dp); |
6109 | if (IS_VALLEYVIEW(dev)) | |
a4a5d2f8 | 6110 | vlv_initial_power_sequencer_setup(intel_dp); |
1e74a324 | 6111 | else |
36b5f425 | 6112 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
773538e8 | 6113 | pps_unlock(intel_dp); |
dada1a9f | 6114 | } |
0095e6dc | 6115 | |
9d1a1031 | 6116 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 6117 | |
0e32b39c | 6118 | /* init MST on ports that can support it */ |
0c9b3715 JN |
6119 | if (HAS_DP_MST(dev) && |
6120 | (port == PORT_B || port == PORT_C || port == PORT_D)) | |
6121 | intel_dp_mst_encoder_init(intel_dig_port, | |
6122 | intel_connector->base.base.id); | |
0e32b39c | 6123 | |
36b5f425 | 6124 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
4f71d0cb | 6125 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
6126 | if (is_edp(intel_dp)) { |
6127 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
6128 | /* |
6129 | * vdd might still be enabled do to the delayed vdd off. | |
6130 | * Make sure vdd is actually turned off here. | |
6131 | */ | |
773538e8 | 6132 | pps_lock(intel_dp); |
4be73780 | 6133 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 6134 | pps_unlock(intel_dp); |
15b1d171 | 6135 | } |
34ea3d38 | 6136 | drm_connector_unregister(connector); |
b2f246a8 | 6137 | drm_connector_cleanup(connector); |
16c25533 | 6138 | return false; |
b2f246a8 | 6139 | } |
32f9d658 | 6140 | |
f684960e CW |
6141 | intel_dp_add_properties(intel_dp, connector); |
6142 | ||
a4fc5ed6 KP |
6143 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
6144 | * 0xd. Failure to do so will result in spurious interrupts being | |
6145 | * generated on the port when a cable is not attached. | |
6146 | */ | |
6147 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
6148 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
6149 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
6150 | } | |
16c25533 | 6151 | |
aa7471d2 JN |
6152 | i915_debugfs_connector_add(connector); |
6153 | ||
16c25533 | 6154 | return true; |
a4fc5ed6 | 6155 | } |
f0fec3f2 PZ |
6156 | |
6157 | void | |
6158 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
6159 | { | |
13cf5504 | 6160 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
6161 | struct intel_digital_port *intel_dig_port; |
6162 | struct intel_encoder *intel_encoder; | |
6163 | struct drm_encoder *encoder; | |
6164 | struct intel_connector *intel_connector; | |
6165 | ||
b14c5679 | 6166 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
6167 | if (!intel_dig_port) |
6168 | return; | |
6169 | ||
08d9bc92 | 6170 | intel_connector = intel_connector_alloc(); |
f0fec3f2 PZ |
6171 | if (!intel_connector) { |
6172 | kfree(intel_dig_port); | |
6173 | return; | |
6174 | } | |
6175 | ||
6176 | intel_encoder = &intel_dig_port->base; | |
6177 | encoder = &intel_encoder->base; | |
6178 | ||
6179 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
6180 | DRM_MODE_ENCODER_TMDS); | |
6181 | ||
5bfe2ac0 | 6182 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 6183 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 6184 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 6185 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 6186 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 6187 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 6188 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
6189 | intel_encoder->pre_enable = chv_pre_enable_dp; |
6190 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 6191 | intel_encoder->post_disable = chv_post_disable_dp; |
d6db995f | 6192 | intel_encoder->post_pll_disable = chv_dp_post_pll_disable; |
e4a1d846 | 6193 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 6194 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
6195 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
6196 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 6197 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 6198 | } else { |
ecff4f3b JN |
6199 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
6200 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
6201 | if (INTEL_INFO(dev)->gen >= 5) |
6202 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 6203 | } |
f0fec3f2 | 6204 | |
174edf1f | 6205 | intel_dig_port->port = port; |
f0fec3f2 PZ |
6206 | intel_dig_port->dp.output_reg = output_reg; |
6207 | ||
00c09d70 | 6208 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
6209 | if (IS_CHERRYVIEW(dev)) { |
6210 | if (port == PORT_D) | |
6211 | intel_encoder->crtc_mask = 1 << 2; | |
6212 | else | |
6213 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
6214 | } else { | |
6215 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
6216 | } | |
bc079e8b | 6217 | intel_encoder->cloneable = 0; |
f0fec3f2 | 6218 | |
13cf5504 | 6219 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5fcece80 | 6220 | dev_priv->hotplug.irq_port[port] = intel_dig_port; |
13cf5504 | 6221 | |
15b1d171 PZ |
6222 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
6223 | drm_encoder_cleanup(encoder); | |
6224 | kfree(intel_dig_port); | |
b2f246a8 | 6225 | kfree(intel_connector); |
15b1d171 | 6226 | } |
f0fec3f2 | 6227 | } |
0e32b39c DA |
6228 | |
6229 | void intel_dp_mst_suspend(struct drm_device *dev) | |
6230 | { | |
6231 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6232 | int i; | |
6233 | ||
6234 | /* disable MST */ | |
6235 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 6236 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
0e32b39c DA |
6237 | if (!intel_dig_port) |
6238 | continue; | |
6239 | ||
6240 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
6241 | if (!intel_dig_port->dp.can_mst) | |
6242 | continue; | |
6243 | if (intel_dig_port->dp.is_mst) | |
6244 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
6245 | } | |
6246 | } | |
6247 | } | |
6248 | ||
6249 | void intel_dp_mst_resume(struct drm_device *dev) | |
6250 | { | |
6251 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6252 | int i; | |
6253 | ||
6254 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 6255 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
0e32b39c DA |
6256 | if (!intel_dig_port) |
6257 | continue; | |
6258 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
6259 | int ret; | |
6260 | ||
6261 | if (!intel_dig_port->dp.can_mst) | |
6262 | continue; | |
6263 | ||
6264 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
6265 | if (ret != 0) { | |
6266 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
6267 | } | |
6268 | } | |
6269 | } | |
6270 | } |