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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); | |
f21a2198 | 132 | static void intel_dp_unset_edid(struct intel_dp *intel_dp); |
a4fc5ed6 | 133 | |
ed4e9c1d VS |
134 | static int |
135 | intel_dp_max_link_bw(struct intel_dp *intel_dp) | |
a4fc5ed6 | 136 | { |
7183dc29 | 137 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
138 | |
139 | switch (max_link_bw) { | |
140 | case DP_LINK_BW_1_62: | |
141 | case DP_LINK_BW_2_7: | |
1db10e28 | 142 | case DP_LINK_BW_5_4: |
d4eead50 | 143 | break; |
a4fc5ed6 | 144 | default: |
d4eead50 ID |
145 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
146 | max_link_bw); | |
a4fc5ed6 KP |
147 | max_link_bw = DP_LINK_BW_1_62; |
148 | break; | |
149 | } | |
150 | return max_link_bw; | |
151 | } | |
152 | ||
eeb6324d PZ |
153 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
154 | { | |
155 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
eeb6324d PZ |
156 | u8 source_max, sink_max; |
157 | ||
ccb1a831 | 158 | source_max = intel_dig_port->max_lanes; |
eeb6324d PZ |
159 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); |
160 | ||
161 | return min(source_max, sink_max); | |
162 | } | |
163 | ||
cd9dde44 AJ |
164 | /* |
165 | * The units on the numbers in the next two are... bizarre. Examples will | |
166 | * make it clearer; this one parallels an example in the eDP spec. | |
167 | * | |
168 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
169 | * | |
170 | * 270000 * 1 * 8 / 10 == 216000 | |
171 | * | |
172 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
173 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
174 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
175 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
176 | * | |
177 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
178 | * get the result in decakilobits instead of kilobits. | |
179 | */ | |
180 | ||
a4fc5ed6 | 181 | static int |
c898261c | 182 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 183 | { |
cd9dde44 | 184 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
185 | } |
186 | ||
fe27d53e DA |
187 | static int |
188 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
189 | { | |
190 | return (max_link_clock * max_lanes * 8) / 10; | |
191 | } | |
192 | ||
70ec0645 MK |
193 | static int |
194 | intel_dp_downstream_max_dotclock(struct intel_dp *intel_dp) | |
195 | { | |
196 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
197 | struct intel_encoder *encoder = &intel_dig_port->base; | |
198 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); | |
199 | int max_dotclk = dev_priv->max_dotclk_freq; | |
200 | int ds_max_dotclk; | |
201 | ||
202 | int type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
203 | ||
204 | if (type != DP_DS_PORT_TYPE_VGA) | |
205 | return max_dotclk; | |
206 | ||
207 | ds_max_dotclk = drm_dp_downstream_max_clock(intel_dp->dpcd, | |
208 | intel_dp->downstream_ports); | |
209 | ||
210 | if (ds_max_dotclk != 0) | |
211 | max_dotclk = min(max_dotclk, ds_max_dotclk); | |
212 | ||
213 | return max_dotclk; | |
214 | } | |
215 | ||
40dba341 NM |
216 | static int |
217 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) | |
218 | { | |
219 | if (intel_dp->num_sink_rates) { | |
220 | *sink_rates = intel_dp->sink_rates; | |
221 | return intel_dp->num_sink_rates; | |
222 | } | |
223 | ||
224 | *sink_rates = default_rates; | |
225 | ||
226 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
227 | } | |
228 | ||
229 | static int | |
230 | intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates) | |
231 | { | |
232 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
233 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); | |
234 | int size; | |
235 | ||
236 | if (IS_BROXTON(dev_priv)) { | |
237 | *source_rates = bxt_rates; | |
238 | size = ARRAY_SIZE(bxt_rates); | |
239 | } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { | |
240 | *source_rates = skl_rates; | |
241 | size = ARRAY_SIZE(skl_rates); | |
242 | } else { | |
243 | *source_rates = default_rates; | |
244 | size = ARRAY_SIZE(default_rates); | |
245 | } | |
246 | ||
247 | /* This depends on the fact that 5.4 is last value in the array */ | |
248 | if (!intel_dp_source_supports_hbr2(intel_dp)) | |
249 | size--; | |
250 | ||
251 | return size; | |
252 | } | |
253 | ||
254 | static int intersect_rates(const int *source_rates, int source_len, | |
255 | const int *sink_rates, int sink_len, | |
256 | int *common_rates) | |
257 | { | |
258 | int i = 0, j = 0, k = 0; | |
259 | ||
260 | while (i < source_len && j < sink_len) { | |
261 | if (source_rates[i] == sink_rates[j]) { | |
262 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) | |
263 | return k; | |
264 | common_rates[k] = source_rates[i]; | |
265 | ++k; | |
266 | ++i; | |
267 | ++j; | |
268 | } else if (source_rates[i] < sink_rates[j]) { | |
269 | ++i; | |
270 | } else { | |
271 | ++j; | |
272 | } | |
273 | } | |
274 | return k; | |
275 | } | |
276 | ||
277 | static int intel_dp_common_rates(struct intel_dp *intel_dp, | |
278 | int *common_rates) | |
279 | { | |
280 | const int *source_rates, *sink_rates; | |
281 | int source_len, sink_len; | |
282 | ||
283 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
284 | source_len = intel_dp_source_rates(intel_dp, &source_rates); | |
285 | ||
286 | return intersect_rates(source_rates, source_len, | |
287 | sink_rates, sink_len, | |
288 | common_rates); | |
289 | } | |
290 | ||
c19de8eb | 291 | static enum drm_mode_status |
a4fc5ed6 KP |
292 | intel_dp_mode_valid(struct drm_connector *connector, |
293 | struct drm_display_mode *mode) | |
294 | { | |
df0e9248 | 295 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
296 | struct intel_connector *intel_connector = to_intel_connector(connector); |
297 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
298 | int target_clock = mode->clock; |
299 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
70ec0645 MK |
300 | int max_dotclk; |
301 | ||
302 | max_dotclk = intel_dp_downstream_max_dotclock(intel_dp); | |
a4fc5ed6 | 303 | |
dd06f90e JN |
304 | if (is_edp(intel_dp) && fixed_mode) { |
305 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
306 | return MODE_PANEL; |
307 | ||
dd06f90e | 308 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 309 | return MODE_PANEL; |
03afc4a2 DV |
310 | |
311 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
312 | } |
313 | ||
50fec21a | 314 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 315 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
316 | |
317 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
318 | mode_rate = intel_dp_link_required(target_clock, 18); | |
319 | ||
799487f5 | 320 | if (mode_rate > max_rate || target_clock > max_dotclk) |
c4867936 | 321 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
322 | |
323 | if (mode->clock < 10000) | |
324 | return MODE_CLOCK_LOW; | |
325 | ||
0af78a2b DV |
326 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
327 | return MODE_H_ILLEGAL; | |
328 | ||
a4fc5ed6 KP |
329 | return MODE_OK; |
330 | } | |
331 | ||
a4f1289e | 332 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
333 | { |
334 | int i; | |
335 | uint32_t v = 0; | |
336 | ||
337 | if (src_bytes > 4) | |
338 | src_bytes = 4; | |
339 | for (i = 0; i < src_bytes; i++) | |
340 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
341 | return v; | |
342 | } | |
343 | ||
c2af70e2 | 344 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
345 | { |
346 | int i; | |
347 | if (dst_bytes > 4) | |
348 | dst_bytes = 4; | |
349 | for (i = 0; i < dst_bytes; i++) | |
350 | dst[i] = src >> ((3-i) * 8); | |
351 | } | |
352 | ||
bf13e81b JN |
353 | static void |
354 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 355 | struct intel_dp *intel_dp); |
bf13e81b JN |
356 | static void |
357 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 358 | struct intel_dp *intel_dp); |
335f752b ID |
359 | static void |
360 | intel_dp_pps_init(struct drm_device *dev, struct intel_dp *intel_dp); | |
bf13e81b | 361 | |
773538e8 VS |
362 | static void pps_lock(struct intel_dp *intel_dp) |
363 | { | |
364 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
365 | struct intel_encoder *encoder = &intel_dig_port->base; | |
366 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 367 | struct drm_i915_private *dev_priv = to_i915(dev); |
773538e8 VS |
368 | enum intel_display_power_domain power_domain; |
369 | ||
370 | /* | |
371 | * See vlv_power_sequencer_reset() why we need | |
372 | * a power domain reference here. | |
373 | */ | |
25f78f58 | 374 | power_domain = intel_display_port_aux_power_domain(encoder); |
773538e8 VS |
375 | intel_display_power_get(dev_priv, power_domain); |
376 | ||
377 | mutex_lock(&dev_priv->pps_mutex); | |
378 | } | |
379 | ||
380 | static void pps_unlock(struct intel_dp *intel_dp) | |
381 | { | |
382 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
383 | struct intel_encoder *encoder = &intel_dig_port->base; | |
384 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 385 | struct drm_i915_private *dev_priv = to_i915(dev); |
773538e8 VS |
386 | enum intel_display_power_domain power_domain; |
387 | ||
388 | mutex_unlock(&dev_priv->pps_mutex); | |
389 | ||
25f78f58 | 390 | power_domain = intel_display_port_aux_power_domain(encoder); |
773538e8 VS |
391 | intel_display_power_put(dev_priv, power_domain); |
392 | } | |
393 | ||
961a0db0 VS |
394 | static void |
395 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
396 | { | |
397 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
30ad9814 | 398 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
961a0db0 | 399 | enum pipe pipe = intel_dp->pps_pipe; |
0047eedc VS |
400 | bool pll_enabled, release_cl_override = false; |
401 | enum dpio_phy phy = DPIO_PHY(pipe); | |
402 | enum dpio_channel ch = vlv_pipe_to_channel(pipe); | |
961a0db0 VS |
403 | uint32_t DP; |
404 | ||
405 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
406 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
407 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
408 | return; | |
409 | ||
410 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
411 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
412 | ||
413 | /* Preserve the BIOS-computed detected bit. This is | |
414 | * supposed to be read-only. | |
415 | */ | |
416 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
417 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
418 | DP |= DP_PORT_WIDTH(1); | |
419 | DP |= DP_LINK_TRAIN_PAT_1; | |
420 | ||
920a14b2 | 421 | if (IS_CHERRYVIEW(dev_priv)) |
961a0db0 VS |
422 | DP |= DP_PIPE_SELECT_CHV(pipe); |
423 | else if (pipe == PIPE_B) | |
424 | DP |= DP_PIPEB_SELECT; | |
425 | ||
d288f65f VS |
426 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
427 | ||
428 | /* | |
429 | * The DPLL for the pipe must be enabled for this to work. | |
430 | * So enable temporarily it if it's not already enabled. | |
431 | */ | |
0047eedc | 432 | if (!pll_enabled) { |
920a14b2 | 433 | release_cl_override = IS_CHERRYVIEW(dev_priv) && |
0047eedc VS |
434 | !chv_phy_powergate_ch(dev_priv, phy, ch, true); |
435 | ||
30ad9814 | 436 | if (vlv_force_pll_on(dev_priv, pipe, IS_CHERRYVIEW(dev_priv) ? |
3f36b937 TU |
437 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll)) { |
438 | DRM_ERROR("Failed to force on pll for pipe %c!\n", | |
439 | pipe_name(pipe)); | |
440 | return; | |
441 | } | |
0047eedc | 442 | } |
d288f65f | 443 | |
961a0db0 VS |
444 | /* |
445 | * Similar magic as in intel_dp_enable_port(). | |
446 | * We _must_ do this port enable + disable trick | |
447 | * to make this power seqeuencer lock onto the port. | |
448 | * Otherwise even VDD force bit won't work. | |
449 | */ | |
450 | I915_WRITE(intel_dp->output_reg, DP); | |
451 | POSTING_READ(intel_dp->output_reg); | |
452 | ||
453 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
454 | POSTING_READ(intel_dp->output_reg); | |
455 | ||
456 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
457 | POSTING_READ(intel_dp->output_reg); | |
d288f65f | 458 | |
0047eedc | 459 | if (!pll_enabled) { |
30ad9814 | 460 | vlv_force_pll_off(dev_priv, pipe); |
0047eedc VS |
461 | |
462 | if (release_cl_override) | |
463 | chv_phy_powergate_ch(dev_priv, phy, ch, false); | |
464 | } | |
961a0db0 VS |
465 | } |
466 | ||
bf13e81b JN |
467 | static enum pipe |
468 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
469 | { | |
470 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b | 471 | struct drm_device *dev = intel_dig_port->base.base.dev; |
fac5e23e | 472 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 VS |
473 | struct intel_encoder *encoder; |
474 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 475 | enum pipe pipe; |
bf13e81b | 476 | |
e39b999a | 477 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 478 | |
a8c3344e VS |
479 | /* We should never land here with regular DP ports */ |
480 | WARN_ON(!is_edp(intel_dp)); | |
481 | ||
a4a5d2f8 VS |
482 | if (intel_dp->pps_pipe != INVALID_PIPE) |
483 | return intel_dp->pps_pipe; | |
484 | ||
485 | /* | |
486 | * We don't have power sequencer currently. | |
487 | * Pick one that's not used by other ports. | |
488 | */ | |
19c8054c | 489 | for_each_intel_encoder(dev, encoder) { |
a4a5d2f8 VS |
490 | struct intel_dp *tmp; |
491 | ||
492 | if (encoder->type != INTEL_OUTPUT_EDP) | |
493 | continue; | |
494 | ||
495 | tmp = enc_to_intel_dp(&encoder->base); | |
496 | ||
497 | if (tmp->pps_pipe != INVALID_PIPE) | |
498 | pipes &= ~(1 << tmp->pps_pipe); | |
499 | } | |
500 | ||
501 | /* | |
502 | * Didn't find one. This should not happen since there | |
503 | * are two power sequencers and up to two eDP ports. | |
504 | */ | |
505 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
506 | pipe = PIPE_A; |
507 | else | |
508 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 509 | |
a8c3344e VS |
510 | vlv_steal_power_sequencer(dev, pipe); |
511 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
512 | |
513 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
514 | pipe_name(intel_dp->pps_pipe), | |
515 | port_name(intel_dig_port->port)); | |
516 | ||
517 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
518 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
519 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 520 | |
961a0db0 VS |
521 | /* |
522 | * Even vdd force doesn't work until we've made | |
523 | * the power sequencer lock in on the port. | |
524 | */ | |
525 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
526 | |
527 | return intel_dp->pps_pipe; | |
528 | } | |
529 | ||
78597996 ID |
530 | static int |
531 | bxt_power_sequencer_idx(struct intel_dp *intel_dp) | |
532 | { | |
533 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
534 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 535 | struct drm_i915_private *dev_priv = to_i915(dev); |
78597996 ID |
536 | |
537 | lockdep_assert_held(&dev_priv->pps_mutex); | |
538 | ||
539 | /* We should never land here with regular DP ports */ | |
540 | WARN_ON(!is_edp(intel_dp)); | |
541 | ||
542 | /* | |
543 | * TODO: BXT has 2 PPS instances. The correct port->PPS instance | |
544 | * mapping needs to be retrieved from VBT, for now just hard-code to | |
545 | * use instance #0 always. | |
546 | */ | |
547 | if (!intel_dp->pps_reset) | |
548 | return 0; | |
549 | ||
550 | intel_dp->pps_reset = false; | |
551 | ||
552 | /* | |
553 | * Only the HW needs to be reprogrammed, the SW state is fixed and | |
554 | * has been setup during connector init. | |
555 | */ | |
556 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
6491ab27 VS |
561 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
562 | enum pipe pipe); | |
563 | ||
564 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
565 | enum pipe pipe) | |
566 | { | |
44cb734c | 567 | return I915_READ(PP_STATUS(pipe)) & PP_ON; |
6491ab27 VS |
568 | } |
569 | ||
570 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
571 | enum pipe pipe) | |
572 | { | |
44cb734c | 573 | return I915_READ(PP_CONTROL(pipe)) & EDP_FORCE_VDD; |
6491ab27 VS |
574 | } |
575 | ||
576 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
577 | enum pipe pipe) | |
578 | { | |
579 | return true; | |
580 | } | |
bf13e81b | 581 | |
a4a5d2f8 | 582 | static enum pipe |
6491ab27 VS |
583 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
584 | enum port port, | |
585 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
586 | { |
587 | enum pipe pipe; | |
bf13e81b | 588 | |
bf13e81b | 589 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
44cb734c | 590 | u32 port_sel = I915_READ(PP_ON_DELAYS(pipe)) & |
bf13e81b | 591 | PANEL_PORT_SELECT_MASK; |
a4a5d2f8 VS |
592 | |
593 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
594 | continue; | |
595 | ||
6491ab27 VS |
596 | if (!pipe_check(dev_priv, pipe)) |
597 | continue; | |
598 | ||
a4a5d2f8 | 599 | return pipe; |
bf13e81b JN |
600 | } |
601 | ||
a4a5d2f8 VS |
602 | return INVALID_PIPE; |
603 | } | |
604 | ||
605 | static void | |
606 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
607 | { | |
608 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
609 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 610 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 VS |
611 | enum port port = intel_dig_port->port; |
612 | ||
613 | lockdep_assert_held(&dev_priv->pps_mutex); | |
614 | ||
615 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
616 | /* first pick one where the panel is on */ |
617 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
618 | vlv_pipe_has_pp_on); | |
619 | /* didn't find one? pick one where vdd is on */ | |
620 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
621 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
622 | vlv_pipe_has_vdd_on); | |
623 | /* didn't find one? pick one with just the correct port */ | |
624 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
625 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
626 | vlv_pipe_any); | |
a4a5d2f8 VS |
627 | |
628 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
629 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
630 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
631 | port_name(port)); | |
632 | return; | |
bf13e81b JN |
633 | } |
634 | ||
a4a5d2f8 VS |
635 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
636 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
637 | ||
36b5f425 VS |
638 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
639 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
640 | } |
641 | ||
78597996 | 642 | void intel_power_sequencer_reset(struct drm_i915_private *dev_priv) |
773538e8 | 643 | { |
91c8a326 | 644 | struct drm_device *dev = &dev_priv->drm; |
773538e8 VS |
645 | struct intel_encoder *encoder; |
646 | ||
920a14b2 | 647 | if (WARN_ON(!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) && |
e2d214ae | 648 | !IS_BROXTON(dev_priv))) |
773538e8 VS |
649 | return; |
650 | ||
651 | /* | |
652 | * We can't grab pps_mutex here due to deadlock with power_domain | |
653 | * mutex when power_domain functions are called while holding pps_mutex. | |
654 | * That also means that in order to use pps_pipe the code needs to | |
655 | * hold both a power domain reference and pps_mutex, and the power domain | |
656 | * reference get/put must be done while _not_ holding pps_mutex. | |
657 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
658 | * should use them always. | |
659 | */ | |
660 | ||
19c8054c | 661 | for_each_intel_encoder(dev, encoder) { |
773538e8 VS |
662 | struct intel_dp *intel_dp; |
663 | ||
664 | if (encoder->type != INTEL_OUTPUT_EDP) | |
665 | continue; | |
666 | ||
667 | intel_dp = enc_to_intel_dp(&encoder->base); | |
e2d214ae | 668 | if (IS_BROXTON(dev_priv)) |
78597996 ID |
669 | intel_dp->pps_reset = true; |
670 | else | |
671 | intel_dp->pps_pipe = INVALID_PIPE; | |
773538e8 | 672 | } |
bf13e81b JN |
673 | } |
674 | ||
8e8232d5 ID |
675 | struct pps_registers { |
676 | i915_reg_t pp_ctrl; | |
677 | i915_reg_t pp_stat; | |
678 | i915_reg_t pp_on; | |
679 | i915_reg_t pp_off; | |
680 | i915_reg_t pp_div; | |
681 | }; | |
682 | ||
683 | static void intel_pps_get_registers(struct drm_i915_private *dev_priv, | |
684 | struct intel_dp *intel_dp, | |
685 | struct pps_registers *regs) | |
686 | { | |
44cb734c ID |
687 | int pps_idx = 0; |
688 | ||
8e8232d5 ID |
689 | memset(regs, 0, sizeof(*regs)); |
690 | ||
44cb734c ID |
691 | if (IS_BROXTON(dev_priv)) |
692 | pps_idx = bxt_power_sequencer_idx(intel_dp); | |
693 | else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
694 | pps_idx = vlv_power_sequencer_pipe(intel_dp); | |
8e8232d5 | 695 | |
44cb734c ID |
696 | regs->pp_ctrl = PP_CONTROL(pps_idx); |
697 | regs->pp_stat = PP_STATUS(pps_idx); | |
698 | regs->pp_on = PP_ON_DELAYS(pps_idx); | |
699 | regs->pp_off = PP_OFF_DELAYS(pps_idx); | |
700 | if (!IS_BROXTON(dev_priv)) | |
701 | regs->pp_div = PP_DIVISOR(pps_idx); | |
8e8232d5 ID |
702 | } |
703 | ||
f0f59a00 VS |
704 | static i915_reg_t |
705 | _pp_ctrl_reg(struct intel_dp *intel_dp) | |
bf13e81b | 706 | { |
8e8232d5 | 707 | struct pps_registers regs; |
bf13e81b | 708 | |
8e8232d5 ID |
709 | intel_pps_get_registers(to_i915(intel_dp_to_dev(intel_dp)), intel_dp, |
710 | ®s); | |
711 | ||
712 | return regs.pp_ctrl; | |
bf13e81b JN |
713 | } |
714 | ||
f0f59a00 VS |
715 | static i915_reg_t |
716 | _pp_stat_reg(struct intel_dp *intel_dp) | |
bf13e81b | 717 | { |
8e8232d5 | 718 | struct pps_registers regs; |
bf13e81b | 719 | |
8e8232d5 ID |
720 | intel_pps_get_registers(to_i915(intel_dp_to_dev(intel_dp)), intel_dp, |
721 | ®s); | |
722 | ||
723 | return regs.pp_stat; | |
bf13e81b JN |
724 | } |
725 | ||
01527b31 CT |
726 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
727 | This function only applicable when panel PM state is not to be tracked */ | |
728 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
729 | void *unused) | |
730 | { | |
731 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
732 | edp_notifier); | |
733 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 734 | struct drm_i915_private *dev_priv = to_i915(dev); |
01527b31 CT |
735 | |
736 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
737 | return 0; | |
738 | ||
773538e8 | 739 | pps_lock(intel_dp); |
e39b999a | 740 | |
920a14b2 | 741 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
e39b999a | 742 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
f0f59a00 | 743 | i915_reg_t pp_ctrl_reg, pp_div_reg; |
649636ef | 744 | u32 pp_div; |
e39b999a | 745 | |
44cb734c ID |
746 | pp_ctrl_reg = PP_CONTROL(pipe); |
747 | pp_div_reg = PP_DIVISOR(pipe); | |
01527b31 CT |
748 | pp_div = I915_READ(pp_div_reg); |
749 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
750 | ||
751 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
752 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
753 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
754 | msleep(intel_dp->panel_power_cycle_delay); | |
755 | } | |
756 | ||
773538e8 | 757 | pps_unlock(intel_dp); |
e39b999a | 758 | |
01527b31 CT |
759 | return 0; |
760 | } | |
761 | ||
4be73780 | 762 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 763 | { |
30add22d | 764 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 765 | struct drm_i915_private *dev_priv = to_i915(dev); |
ebf33b18 | 766 | |
e39b999a VS |
767 | lockdep_assert_held(&dev_priv->pps_mutex); |
768 | ||
920a14b2 | 769 | if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) && |
9a42356b VS |
770 | intel_dp->pps_pipe == INVALID_PIPE) |
771 | return false; | |
772 | ||
bf13e81b | 773 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
774 | } |
775 | ||
4be73780 | 776 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 777 | { |
30add22d | 778 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 779 | struct drm_i915_private *dev_priv = to_i915(dev); |
ebf33b18 | 780 | |
e39b999a VS |
781 | lockdep_assert_held(&dev_priv->pps_mutex); |
782 | ||
920a14b2 | 783 | if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) && |
9a42356b VS |
784 | intel_dp->pps_pipe == INVALID_PIPE) |
785 | return false; | |
786 | ||
773538e8 | 787 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
788 | } |
789 | ||
9b984dae KP |
790 | static void |
791 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
792 | { | |
30add22d | 793 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 794 | struct drm_i915_private *dev_priv = to_i915(dev); |
ebf33b18 | 795 | |
9b984dae KP |
796 | if (!is_edp(intel_dp)) |
797 | return; | |
453c5420 | 798 | |
4be73780 | 799 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
800 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
801 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
802 | I915_READ(_pp_stat_reg(intel_dp)), |
803 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
804 | } |
805 | } | |
806 | ||
9ee32fea DV |
807 | static uint32_t |
808 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
809 | { | |
810 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
811 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 812 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0f59a00 | 813 | i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
814 | uint32_t status; |
815 | bool done; | |
816 | ||
ef04f00d | 817 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 818 | if (has_aux_irq) |
b18ac466 | 819 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 820 | msecs_to_jiffies_timeout(10)); |
9ee32fea | 821 | else |
713a6b66 | 822 | done = wait_for(C, 10) == 0; |
9ee32fea DV |
823 | if (!done) |
824 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
825 | has_aux_irq); | |
826 | #undef C | |
827 | ||
828 | return status; | |
829 | } | |
830 | ||
6ffb1be7 | 831 | static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 832 | { |
174edf1f | 833 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
e7dc33f3 | 834 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
9ee32fea | 835 | |
a457f54b VS |
836 | if (index) |
837 | return 0; | |
838 | ||
ec5b01dd DL |
839 | /* |
840 | * The clock divider is based off the hrawclk, and would like to run at | |
a457f54b | 841 | * 2MHz. So, take the hrawclk value and divide by 2000 and use that |
a4fc5ed6 | 842 | */ |
a457f54b | 843 | return DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 2000); |
ec5b01dd DL |
844 | } |
845 | ||
846 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
847 | { | |
848 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
a457f54b | 849 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
ec5b01dd DL |
850 | |
851 | if (index) | |
852 | return 0; | |
853 | ||
a457f54b VS |
854 | /* |
855 | * The clock divider is based off the cdclk or PCH rawclk, and would | |
856 | * like to run at 2MHz. So, take the cdclk or PCH rawclk value and | |
857 | * divide by 2000 and use that | |
858 | */ | |
e7dc33f3 | 859 | if (intel_dig_port->port == PORT_A) |
fce18c4c | 860 | return DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 2000); |
e7dc33f3 VS |
861 | else |
862 | return DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 2000); | |
ec5b01dd DL |
863 | } |
864 | ||
865 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
866 | { | |
867 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
a457f54b | 868 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
ec5b01dd | 869 | |
a457f54b | 870 | if (intel_dig_port->port != PORT_A && HAS_PCH_LPT_H(dev_priv)) { |
2c55c336 | 871 | /* Workaround for non-ULT HSW */ |
bc86625a CW |
872 | switch (index) { |
873 | case 0: return 63; | |
874 | case 1: return 72; | |
875 | default: return 0; | |
876 | } | |
2c55c336 | 877 | } |
a457f54b VS |
878 | |
879 | return ilk_get_aux_clock_divider(intel_dp, index); | |
b84a1cf8 RV |
880 | } |
881 | ||
b6b5e383 DL |
882 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
883 | { | |
884 | /* | |
885 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
886 | * derive the clock from CDCLK automatically). We still implement the | |
887 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
888 | */ | |
889 | return index ? 0 : 1; | |
890 | } | |
891 | ||
6ffb1be7 VS |
892 | static uint32_t g4x_get_aux_send_ctl(struct intel_dp *intel_dp, |
893 | bool has_aux_irq, | |
894 | int send_bytes, | |
895 | uint32_t aux_clock_divider) | |
5ed12a19 DL |
896 | { |
897 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
8652744b TU |
898 | struct drm_i915_private *dev_priv = |
899 | to_i915(intel_dig_port->base.base.dev); | |
5ed12a19 DL |
900 | uint32_t precharge, timeout; |
901 | ||
8652744b | 902 | if (IS_GEN6(dev_priv)) |
5ed12a19 DL |
903 | precharge = 3; |
904 | else | |
905 | precharge = 5; | |
906 | ||
8652744b | 907 | if (IS_BROADWELL(dev_priv) && intel_dig_port->port == PORT_A) |
5ed12a19 DL |
908 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; |
909 | else | |
910 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
911 | ||
912 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 913 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 914 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 915 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 916 | timeout | |
788d4433 | 917 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
918 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
919 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 920 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
921 | } |
922 | ||
b9ca5fad DL |
923 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
924 | bool has_aux_irq, | |
925 | int send_bytes, | |
926 | uint32_t unused) | |
927 | { | |
928 | return DP_AUX_CH_CTL_SEND_BUSY | | |
929 | DP_AUX_CH_CTL_DONE | | |
930 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
931 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
932 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
933 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
934 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
d4dcbdce | 935 | DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) | |
b9ca5fad DL |
936 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); |
937 | } | |
938 | ||
b84a1cf8 RV |
939 | static int |
940 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 941 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
942 | uint8_t *recv, int recv_size) |
943 | { | |
944 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
0031fb96 TU |
945 | struct drm_i915_private *dev_priv = |
946 | to_i915(intel_dig_port->base.base.dev); | |
f0f59a00 | 947 | i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
bc86625a | 948 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
949 | int i, ret, recv_bytes; |
950 | uint32_t status; | |
5ed12a19 | 951 | int try, clock = 0; |
0031fb96 | 952 | bool has_aux_irq = HAS_AUX_IRQ(dev_priv); |
884f19e9 JN |
953 | bool vdd; |
954 | ||
773538e8 | 955 | pps_lock(intel_dp); |
e39b999a | 956 | |
72c3500a VS |
957 | /* |
958 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
959 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
960 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
961 | * ourselves. | |
962 | */ | |
1e0560e0 | 963 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
964 | |
965 | /* dp aux is extremely sensitive to irq latency, hence request the | |
966 | * lowest possible wakeup latency and so prevent the cpu from going into | |
967 | * deep sleep states. | |
968 | */ | |
969 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
970 | ||
971 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 972 | |
11bee43e JB |
973 | /* Try to wait for any previous AUX channel activity */ |
974 | for (try = 0; try < 3; try++) { | |
ef04f00d | 975 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
976 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
977 | break; | |
978 | msleep(1); | |
979 | } | |
980 | ||
981 | if (try == 3) { | |
02196c77 MK |
982 | static u32 last_status = -1; |
983 | const u32 status = I915_READ(ch_ctl); | |
984 | ||
985 | if (status != last_status) { | |
986 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
987 | status); | |
988 | last_status = status; | |
989 | } | |
990 | ||
9ee32fea DV |
991 | ret = -EBUSY; |
992 | goto out; | |
4f7f7b7e CW |
993 | } |
994 | ||
46a5ae9f PZ |
995 | /* Only 5 data registers! */ |
996 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
997 | ret = -E2BIG; | |
998 | goto out; | |
999 | } | |
1000 | ||
ec5b01dd | 1001 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
1002 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
1003 | has_aux_irq, | |
1004 | send_bytes, | |
1005 | aux_clock_divider); | |
5ed12a19 | 1006 | |
bc86625a CW |
1007 | /* Must try at least 3 times according to DP spec */ |
1008 | for (try = 0; try < 5; try++) { | |
1009 | /* Load the send data into the aux channel data registers */ | |
1010 | for (i = 0; i < send_bytes; i += 4) | |
330e20ec | 1011 | I915_WRITE(intel_dp->aux_ch_data_reg[i >> 2], |
a4f1289e RV |
1012 | intel_dp_pack_aux(send + i, |
1013 | send_bytes - i)); | |
bc86625a CW |
1014 | |
1015 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 1016 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
1017 | |
1018 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
1019 | ||
1020 | /* Clear done status and any errors */ | |
1021 | I915_WRITE(ch_ctl, | |
1022 | status | | |
1023 | DP_AUX_CH_CTL_DONE | | |
1024 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
1025 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
1026 | ||
74ebf294 | 1027 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) |
bc86625a | 1028 | continue; |
74ebf294 TP |
1029 | |
1030 | /* DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2 | |
1031 | * 400us delay required for errors and timeouts | |
1032 | * Timeout errors from the HW already meet this | |
1033 | * requirement so skip to next iteration | |
1034 | */ | |
1035 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { | |
1036 | usleep_range(400, 500); | |
bc86625a | 1037 | continue; |
74ebf294 | 1038 | } |
bc86625a | 1039 | if (status & DP_AUX_CH_CTL_DONE) |
e058c945 | 1040 | goto done; |
bc86625a | 1041 | } |
a4fc5ed6 KP |
1042 | } |
1043 | ||
a4fc5ed6 | 1044 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 1045 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
1046 | ret = -EBUSY; |
1047 | goto out; | |
a4fc5ed6 KP |
1048 | } |
1049 | ||
e058c945 | 1050 | done: |
a4fc5ed6 KP |
1051 | /* Check for timeout or receive error. |
1052 | * Timeouts occur when the sink is not connected | |
1053 | */ | |
a5b3da54 | 1054 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 1055 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
1056 | ret = -EIO; |
1057 | goto out; | |
a5b3da54 | 1058 | } |
1ae8c0a5 KP |
1059 | |
1060 | /* Timeouts occur when the device isn't connected, so they're | |
1061 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 1062 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 1063 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
1064 | ret = -ETIMEDOUT; |
1065 | goto out; | |
a4fc5ed6 KP |
1066 | } |
1067 | ||
1068 | /* Unload any bytes sent back from the other side */ | |
1069 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
1070 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
14e01889 RV |
1071 | |
1072 | /* | |
1073 | * By BSpec: "Message sizes of 0 or >20 are not allowed." | |
1074 | * We have no idea of what happened so we return -EBUSY so | |
1075 | * drm layer takes care for the necessary retries. | |
1076 | */ | |
1077 | if (recv_bytes == 0 || recv_bytes > 20) { | |
1078 | DRM_DEBUG_KMS("Forbidden recv_bytes = %d on aux transaction\n", | |
1079 | recv_bytes); | |
1080 | /* | |
1081 | * FIXME: This patch was created on top of a series that | |
1082 | * organize the retries at drm level. There EBUSY should | |
1083 | * also take care for 1ms wait before retrying. | |
1084 | * That aux retries re-org is still needed and after that is | |
1085 | * merged we remove this sleep from here. | |
1086 | */ | |
1087 | usleep_range(1000, 1500); | |
1088 | ret = -EBUSY; | |
1089 | goto out; | |
1090 | } | |
1091 | ||
a4fc5ed6 KP |
1092 | if (recv_bytes > recv_size) |
1093 | recv_bytes = recv_size; | |
0206e353 | 1094 | |
4f7f7b7e | 1095 | for (i = 0; i < recv_bytes; i += 4) |
330e20ec | 1096 | intel_dp_unpack_aux(I915_READ(intel_dp->aux_ch_data_reg[i >> 2]), |
a4f1289e | 1097 | recv + i, recv_bytes - i); |
a4fc5ed6 | 1098 | |
9ee32fea DV |
1099 | ret = recv_bytes; |
1100 | out: | |
1101 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
1102 | ||
884f19e9 JN |
1103 | if (vdd) |
1104 | edp_panel_vdd_off(intel_dp, false); | |
1105 | ||
773538e8 | 1106 | pps_unlock(intel_dp); |
e39b999a | 1107 | |
9ee32fea | 1108 | return ret; |
a4fc5ed6 KP |
1109 | } |
1110 | ||
a6c8aff0 JN |
1111 | #define BARE_ADDRESS_SIZE 3 |
1112 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
1113 | static ssize_t |
1114 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 1115 | { |
9d1a1031 JN |
1116 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
1117 | uint8_t txbuf[20], rxbuf[20]; | |
1118 | size_t txsize, rxsize; | |
a4fc5ed6 | 1119 | int ret; |
a4fc5ed6 | 1120 | |
d2d9cbbd VS |
1121 | txbuf[0] = (msg->request << 4) | |
1122 | ((msg->address >> 16) & 0xf); | |
1123 | txbuf[1] = (msg->address >> 8) & 0xff; | |
9d1a1031 JN |
1124 | txbuf[2] = msg->address & 0xff; |
1125 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 1126 | |
9d1a1031 JN |
1127 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
1128 | case DP_AUX_NATIVE_WRITE: | |
1129 | case DP_AUX_I2C_WRITE: | |
c1e74122 | 1130 | case DP_AUX_I2C_WRITE_STATUS_UPDATE: |
a6c8aff0 | 1131 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
a1ddefd8 | 1132 | rxsize = 2; /* 0 or 1 data bytes */ |
f51a44b9 | 1133 | |
9d1a1031 JN |
1134 | if (WARN_ON(txsize > 20)) |
1135 | return -E2BIG; | |
a4fc5ed6 | 1136 | |
dd788090 VS |
1137 | WARN_ON(!msg->buffer != !msg->size); |
1138 | ||
d81a67cc ID |
1139 | if (msg->buffer) |
1140 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); | |
a4fc5ed6 | 1141 | |
9d1a1031 JN |
1142 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
1143 | if (ret > 0) { | |
1144 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 1145 | |
a1ddefd8 JN |
1146 | if (ret > 1) { |
1147 | /* Number of bytes written in a short write. */ | |
1148 | ret = clamp_t(int, rxbuf[1], 0, msg->size); | |
1149 | } else { | |
1150 | /* Return payload size. */ | |
1151 | ret = msg->size; | |
1152 | } | |
9d1a1031 JN |
1153 | } |
1154 | break; | |
46a5ae9f | 1155 | |
9d1a1031 JN |
1156 | case DP_AUX_NATIVE_READ: |
1157 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 1158 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 1159 | rxsize = msg->size + 1; |
a4fc5ed6 | 1160 | |
9d1a1031 JN |
1161 | if (WARN_ON(rxsize > 20)) |
1162 | return -E2BIG; | |
a4fc5ed6 | 1163 | |
9d1a1031 JN |
1164 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
1165 | if (ret > 0) { | |
1166 | msg->reply = rxbuf[0] >> 4; | |
1167 | /* | |
1168 | * Assume happy day, and copy the data. The caller is | |
1169 | * expected to check msg->reply before touching it. | |
1170 | * | |
1171 | * Return payload size. | |
1172 | */ | |
1173 | ret--; | |
1174 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 1175 | } |
9d1a1031 JN |
1176 | break; |
1177 | ||
1178 | default: | |
1179 | ret = -EINVAL; | |
1180 | break; | |
a4fc5ed6 | 1181 | } |
f51a44b9 | 1182 | |
9d1a1031 | 1183 | return ret; |
a4fc5ed6 KP |
1184 | } |
1185 | ||
8f7ce038 VS |
1186 | static enum port intel_aux_port(struct drm_i915_private *dev_priv, |
1187 | enum port port) | |
1188 | { | |
1189 | const struct ddi_vbt_port_info *info = | |
1190 | &dev_priv->vbt.ddi_port_info[port]; | |
1191 | enum port aux_port; | |
1192 | ||
1193 | if (!info->alternate_aux_channel) { | |
1194 | DRM_DEBUG_KMS("using AUX %c for port %c (platform default)\n", | |
1195 | port_name(port), port_name(port)); | |
1196 | return port; | |
1197 | } | |
1198 | ||
1199 | switch (info->alternate_aux_channel) { | |
1200 | case DP_AUX_A: | |
1201 | aux_port = PORT_A; | |
1202 | break; | |
1203 | case DP_AUX_B: | |
1204 | aux_port = PORT_B; | |
1205 | break; | |
1206 | case DP_AUX_C: | |
1207 | aux_port = PORT_C; | |
1208 | break; | |
1209 | case DP_AUX_D: | |
1210 | aux_port = PORT_D; | |
1211 | break; | |
1212 | default: | |
1213 | MISSING_CASE(info->alternate_aux_channel); | |
1214 | aux_port = PORT_A; | |
1215 | break; | |
1216 | } | |
1217 | ||
1218 | DRM_DEBUG_KMS("using AUX %c for port %c (VBT)\n", | |
1219 | port_name(aux_port), port_name(port)); | |
1220 | ||
1221 | return aux_port; | |
1222 | } | |
1223 | ||
f0f59a00 | 1224 | static i915_reg_t g4x_aux_ctl_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1225 | enum port port) |
da00bdcf VS |
1226 | { |
1227 | switch (port) { | |
1228 | case PORT_B: | |
1229 | case PORT_C: | |
1230 | case PORT_D: | |
1231 | return DP_AUX_CH_CTL(port); | |
1232 | default: | |
1233 | MISSING_CASE(port); | |
1234 | return DP_AUX_CH_CTL(PORT_B); | |
1235 | } | |
1236 | } | |
1237 | ||
f0f59a00 | 1238 | static i915_reg_t g4x_aux_data_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1239 | enum port port, int index) |
330e20ec VS |
1240 | { |
1241 | switch (port) { | |
1242 | case PORT_B: | |
1243 | case PORT_C: | |
1244 | case PORT_D: | |
1245 | return DP_AUX_CH_DATA(port, index); | |
1246 | default: | |
1247 | MISSING_CASE(port); | |
1248 | return DP_AUX_CH_DATA(PORT_B, index); | |
1249 | } | |
1250 | } | |
1251 | ||
f0f59a00 | 1252 | static i915_reg_t ilk_aux_ctl_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1253 | enum port port) |
da00bdcf VS |
1254 | { |
1255 | switch (port) { | |
1256 | case PORT_A: | |
1257 | return DP_AUX_CH_CTL(port); | |
1258 | case PORT_B: | |
1259 | case PORT_C: | |
1260 | case PORT_D: | |
1261 | return PCH_DP_AUX_CH_CTL(port); | |
1262 | default: | |
1263 | MISSING_CASE(port); | |
1264 | return DP_AUX_CH_CTL(PORT_A); | |
1265 | } | |
1266 | } | |
1267 | ||
f0f59a00 | 1268 | static i915_reg_t ilk_aux_data_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1269 | enum port port, int index) |
330e20ec VS |
1270 | { |
1271 | switch (port) { | |
1272 | case PORT_A: | |
1273 | return DP_AUX_CH_DATA(port, index); | |
1274 | case PORT_B: | |
1275 | case PORT_C: | |
1276 | case PORT_D: | |
1277 | return PCH_DP_AUX_CH_DATA(port, index); | |
1278 | default: | |
1279 | MISSING_CASE(port); | |
1280 | return DP_AUX_CH_DATA(PORT_A, index); | |
1281 | } | |
1282 | } | |
1283 | ||
f0f59a00 | 1284 | static i915_reg_t skl_aux_ctl_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1285 | enum port port) |
da00bdcf | 1286 | { |
da00bdcf VS |
1287 | switch (port) { |
1288 | case PORT_A: | |
1289 | case PORT_B: | |
1290 | case PORT_C: | |
1291 | case PORT_D: | |
1292 | return DP_AUX_CH_CTL(port); | |
1293 | default: | |
1294 | MISSING_CASE(port); | |
1295 | return DP_AUX_CH_CTL(PORT_A); | |
1296 | } | |
1297 | } | |
1298 | ||
f0f59a00 | 1299 | static i915_reg_t skl_aux_data_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1300 | enum port port, int index) |
330e20ec | 1301 | { |
330e20ec VS |
1302 | switch (port) { |
1303 | case PORT_A: | |
1304 | case PORT_B: | |
1305 | case PORT_C: | |
1306 | case PORT_D: | |
1307 | return DP_AUX_CH_DATA(port, index); | |
1308 | default: | |
1309 | MISSING_CASE(port); | |
1310 | return DP_AUX_CH_DATA(PORT_A, index); | |
1311 | } | |
1312 | } | |
1313 | ||
f0f59a00 | 1314 | static i915_reg_t intel_aux_ctl_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1315 | enum port port) |
330e20ec VS |
1316 | { |
1317 | if (INTEL_INFO(dev_priv)->gen >= 9) | |
1318 | return skl_aux_ctl_reg(dev_priv, port); | |
1319 | else if (HAS_PCH_SPLIT(dev_priv)) | |
1320 | return ilk_aux_ctl_reg(dev_priv, port); | |
1321 | else | |
1322 | return g4x_aux_ctl_reg(dev_priv, port); | |
1323 | } | |
1324 | ||
f0f59a00 | 1325 | static i915_reg_t intel_aux_data_reg(struct drm_i915_private *dev_priv, |
c8a89b08 | 1326 | enum port port, int index) |
330e20ec VS |
1327 | { |
1328 | if (INTEL_INFO(dev_priv)->gen >= 9) | |
1329 | return skl_aux_data_reg(dev_priv, port, index); | |
1330 | else if (HAS_PCH_SPLIT(dev_priv)) | |
1331 | return ilk_aux_data_reg(dev_priv, port, index); | |
1332 | else | |
1333 | return g4x_aux_data_reg(dev_priv, port, index); | |
1334 | } | |
1335 | ||
1336 | static void intel_aux_reg_init(struct intel_dp *intel_dp) | |
1337 | { | |
1338 | struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); | |
8f7ce038 VS |
1339 | enum port port = intel_aux_port(dev_priv, |
1340 | dp_to_dig_port(intel_dp)->port); | |
330e20ec VS |
1341 | int i; |
1342 | ||
1343 | intel_dp->aux_ch_ctl_reg = intel_aux_ctl_reg(dev_priv, port); | |
1344 | for (i = 0; i < ARRAY_SIZE(intel_dp->aux_ch_data_reg); i++) | |
1345 | intel_dp->aux_ch_data_reg[i] = intel_aux_data_reg(dev_priv, port, i); | |
1346 | } | |
1347 | ||
9d1a1031 | 1348 | static void |
a121f4e5 VS |
1349 | intel_dp_aux_fini(struct intel_dp *intel_dp) |
1350 | { | |
a121f4e5 VS |
1351 | kfree(intel_dp->aux.name); |
1352 | } | |
1353 | ||
7a418e34 | 1354 | static void |
b6339585 | 1355 | intel_dp_aux_init(struct intel_dp *intel_dp) |
9d1a1031 | 1356 | { |
33ad6626 JN |
1357 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1358 | enum port port = intel_dig_port->port; | |
ab2c0672 | 1359 | |
330e20ec | 1360 | intel_aux_reg_init(intel_dp); |
7a418e34 | 1361 | drm_dp_aux_init(&intel_dp->aux); |
8316f337 | 1362 | |
7a418e34 | 1363 | /* Failure to allocate our preferred name is not critical */ |
a121f4e5 | 1364 | intel_dp->aux.name = kasprintf(GFP_KERNEL, "DPDDC-%c", port_name(port)); |
9d1a1031 | 1365 | intel_dp->aux.transfer = intel_dp_aux_transfer; |
a4fc5ed6 KP |
1366 | } |
1367 | ||
e588fa18 | 1368 | bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp) |
ed63baaf | 1369 | { |
e588fa18 | 1370 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
577c5430 | 1371 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); |
e588fa18 | 1372 | |
577c5430 NM |
1373 | if ((IS_HASWELL(dev_priv) && !IS_HSW_ULX(dev_priv)) || |
1374 | IS_BROADWELL(dev_priv) || (INTEL_GEN(dev_priv) >= 9)) | |
ed63baaf TS |
1375 | return true; |
1376 | else | |
1377 | return false; | |
1378 | } | |
1379 | ||
c6bb3538 DV |
1380 | static void |
1381 | intel_dp_set_clock(struct intel_encoder *encoder, | |
840b32b7 | 1382 | struct intel_crtc_state *pipe_config) |
c6bb3538 DV |
1383 | { |
1384 | struct drm_device *dev = encoder->base.dev; | |
6e266956 | 1385 | struct drm_i915_private *dev_priv = to_i915(dev); |
9dd4ffdf CML |
1386 | const struct dp_link_dpll *divisor = NULL; |
1387 | int i, count = 0; | |
c6bb3538 | 1388 | |
9beb5fea | 1389 | if (IS_G4X(dev_priv)) { |
9dd4ffdf CML |
1390 | divisor = gen4_dpll; |
1391 | count = ARRAY_SIZE(gen4_dpll); | |
6e266956 | 1392 | } else if (HAS_PCH_SPLIT(dev_priv)) { |
9dd4ffdf CML |
1393 | divisor = pch_dpll; |
1394 | count = ARRAY_SIZE(pch_dpll); | |
920a14b2 | 1395 | } else if (IS_CHERRYVIEW(dev_priv)) { |
ef9348c8 CML |
1396 | divisor = chv_dpll; |
1397 | count = ARRAY_SIZE(chv_dpll); | |
11a914c2 | 1398 | } else if (IS_VALLEYVIEW(dev_priv)) { |
65ce4bf5 CML |
1399 | divisor = vlv_dpll; |
1400 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1401 | } |
9dd4ffdf CML |
1402 | |
1403 | if (divisor && count) { | |
1404 | for (i = 0; i < count; i++) { | |
840b32b7 | 1405 | if (pipe_config->port_clock == divisor[i].clock) { |
9dd4ffdf CML |
1406 | pipe_config->dpll = divisor[i].dpll; |
1407 | pipe_config->clock_set = true; | |
1408 | break; | |
1409 | } | |
1410 | } | |
c6bb3538 DV |
1411 | } |
1412 | } | |
1413 | ||
0336400e VS |
1414 | static void snprintf_int_array(char *str, size_t len, |
1415 | const int *array, int nelem) | |
1416 | { | |
1417 | int i; | |
1418 | ||
1419 | str[0] = '\0'; | |
1420 | ||
1421 | for (i = 0; i < nelem; i++) { | |
b2f505be | 1422 | int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]); |
0336400e VS |
1423 | if (r >= len) |
1424 | return; | |
1425 | str += r; | |
1426 | len -= r; | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | static void intel_dp_print_rates(struct intel_dp *intel_dp) | |
1431 | { | |
0336400e | 1432 | const int *source_rates, *sink_rates; |
94ca719e VS |
1433 | int source_len, sink_len, common_len; |
1434 | int common_rates[DP_MAX_SUPPORTED_RATES]; | |
0336400e VS |
1435 | char str[128]; /* FIXME: too big for stack? */ |
1436 | ||
1437 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1438 | return; | |
1439 | ||
e588fa18 | 1440 | source_len = intel_dp_source_rates(intel_dp, &source_rates); |
0336400e VS |
1441 | snprintf_int_array(str, sizeof(str), source_rates, source_len); |
1442 | DRM_DEBUG_KMS("source rates: %s\n", str); | |
1443 | ||
1444 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1445 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); | |
1446 | DRM_DEBUG_KMS("sink rates: %s\n", str); | |
1447 | ||
94ca719e VS |
1448 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1449 | snprintf_int_array(str, sizeof(str), common_rates, common_len); | |
1450 | DRM_DEBUG_KMS("common rates: %s\n", str); | |
0336400e VS |
1451 | } |
1452 | ||
489375c8 | 1453 | bool |
7b3fc170 | 1454 | __intel_dp_read_desc(struct intel_dp *intel_dp, struct intel_dp_desc *desc) |
0e390a33 | 1455 | { |
7b3fc170 ID |
1456 | u32 base = drm_dp_is_branch(intel_dp->dpcd) ? DP_BRANCH_OUI : |
1457 | DP_SINK_OUI; | |
0e390a33 | 1458 | |
7b3fc170 ID |
1459 | return drm_dp_dpcd_read(&intel_dp->aux, base, desc, sizeof(*desc)) == |
1460 | sizeof(*desc); | |
0e390a33 MK |
1461 | } |
1462 | ||
12a47a42 | 1463 | bool intel_dp_read_desc(struct intel_dp *intel_dp) |
1a2724fa | 1464 | { |
7b3fc170 ID |
1465 | struct intel_dp_desc *desc = &intel_dp->desc; |
1466 | bool oui_sup = intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & | |
1467 | DP_OUI_SUPPORT; | |
1468 | int dev_id_len; | |
1a2724fa | 1469 | |
7b3fc170 ID |
1470 | if (!__intel_dp_read_desc(intel_dp, desc)) |
1471 | return false; | |
1a2724fa | 1472 | |
7b3fc170 ID |
1473 | dev_id_len = strnlen(desc->device_id, sizeof(desc->device_id)); |
1474 | DRM_DEBUG_KMS("DP %s: OUI %*phD%s dev-ID %*pE HW-rev %d.%d SW-rev %d.%d\n", | |
1475 | drm_dp_is_branch(intel_dp->dpcd) ? "branch" : "sink", | |
1476 | (int)sizeof(desc->oui), desc->oui, oui_sup ? "" : "(NS)", | |
1477 | dev_id_len, desc->device_id, | |
1478 | desc->hw_rev >> 4, desc->hw_rev & 0xf, | |
1479 | desc->sw_major_rev, desc->sw_minor_rev); | |
1a2724fa | 1480 | |
7b3fc170 | 1481 | return true; |
1a2724fa MK |
1482 | } |
1483 | ||
f4896f15 | 1484 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1485 | { |
1486 | int i = 0; | |
1487 | ||
1488 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1489 | if (find == rates[i]) | |
1490 | break; | |
1491 | ||
1492 | return i; | |
1493 | } | |
1494 | ||
50fec21a VS |
1495 | int |
1496 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1497 | { | |
1498 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1499 | int len; | |
1500 | ||
94ca719e | 1501 | len = intel_dp_common_rates(intel_dp, rates); |
50fec21a VS |
1502 | if (WARN_ON(len <= 0)) |
1503 | return 162000; | |
1504 | ||
1354f734 | 1505 | return rates[len - 1]; |
50fec21a VS |
1506 | } |
1507 | ||
ed4e9c1d VS |
1508 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1509 | { | |
94ca719e | 1510 | return rate_to_index(rate, intel_dp->sink_rates); |
ed4e9c1d VS |
1511 | } |
1512 | ||
94223d04 ACO |
1513 | void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, |
1514 | uint8_t *link_bw, uint8_t *rate_select) | |
04a60f9f VS |
1515 | { |
1516 | if (intel_dp->num_sink_rates) { | |
1517 | *link_bw = 0; | |
1518 | *rate_select = | |
1519 | intel_dp_rate_select(intel_dp, port_clock); | |
1520 | } else { | |
1521 | *link_bw = drm_dp_link_rate_to_bw_code(port_clock); | |
1522 | *rate_select = 0; | |
1523 | } | |
1524 | } | |
1525 | ||
f580bea9 JN |
1526 | static int intel_dp_compute_bpp(struct intel_dp *intel_dp, |
1527 | struct intel_crtc_state *pipe_config) | |
f9bb705e MK |
1528 | { |
1529 | int bpp, bpc; | |
1530 | ||
1531 | bpp = pipe_config->pipe_bpp; | |
1532 | bpc = drm_dp_downstream_max_bpc(intel_dp->dpcd, intel_dp->downstream_ports); | |
1533 | ||
1534 | if (bpc > 0) | |
1535 | bpp = min(bpp, 3*bpc); | |
1536 | ||
1537 | return bpp; | |
1538 | } | |
1539 | ||
00c09d70 | 1540 | bool |
5bfe2ac0 | 1541 | intel_dp_compute_config(struct intel_encoder *encoder, |
0a478c27 ML |
1542 | struct intel_crtc_state *pipe_config, |
1543 | struct drm_connector_state *conn_state) | |
a4fc5ed6 | 1544 | { |
dd11bc10 | 1545 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
2d112de7 | 1546 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1547 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1548 | enum port port = dp_to_dig_port(intel_dp)->port; |
84556d58 | 1549 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
dd06f90e | 1550 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1551 | int lane_count, clock; |
56071a20 | 1552 | int min_lane_count = 1; |
eeb6324d | 1553 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1554 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1555 | int min_clock = 0; |
a8f3ef61 | 1556 | int max_clock; |
083f9560 | 1557 | int bpp, mode_rate; |
ff9a6750 | 1558 | int link_avail, link_clock; |
94ca719e VS |
1559 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1560 | int common_len; | |
04a60f9f | 1561 | uint8_t link_bw, rate_select; |
a8f3ef61 | 1562 | |
94ca719e | 1563 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
a8f3ef61 SJ |
1564 | |
1565 | /* No common link rates between source and sink */ | |
94ca719e | 1566 | WARN_ON(common_len <= 0); |
a8f3ef61 | 1567 | |
94ca719e | 1568 | max_clock = common_len - 1; |
a4fc5ed6 | 1569 | |
4f8036a2 | 1570 | if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && port != PORT_A) |
5bfe2ac0 DV |
1571 | pipe_config->has_pch_encoder = true; |
1572 | ||
f769cd24 | 1573 | pipe_config->has_drrs = false; |
9fcb1704 | 1574 | pipe_config->has_audio = intel_dp->has_audio && port != PORT_A; |
a4fc5ed6 | 1575 | |
dd06f90e JN |
1576 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1577 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1578 | adjusted_mode); | |
a1b2278e | 1579 | |
dd11bc10 | 1580 | if (INTEL_GEN(dev_priv) >= 9) { |
a1b2278e | 1581 | int ret; |
e435d6e5 | 1582 | ret = skl_update_scaler_crtc(pipe_config); |
a1b2278e CK |
1583 | if (ret) |
1584 | return ret; | |
1585 | } | |
1586 | ||
49cff963 | 1587 | if (HAS_GMCH_DISPLAY(dev_priv)) |
2dd24552 JB |
1588 | intel_gmch_panel_fitting(intel_crtc, pipe_config, |
1589 | intel_connector->panel.fitting_mode); | |
1590 | else | |
b074cec8 JB |
1591 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1592 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1593 | } |
1594 | ||
cb1793ce | 1595 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1596 | return false; |
1597 | ||
083f9560 | 1598 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 | 1599 | "max bw %d pixel clock %iKHz\n", |
94ca719e | 1600 | max_lane_count, common_rates[max_clock], |
241bfc38 | 1601 | adjusted_mode->crtc_clock); |
083f9560 | 1602 | |
36008365 DV |
1603 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1604 | * bpc in between. */ | |
f9bb705e | 1605 | bpp = intel_dp_compute_bpp(intel_dp, pipe_config); |
56071a20 | 1606 | if (is_edp(intel_dp)) { |
22ce5628 TS |
1607 | |
1608 | /* Get bpp from vbt only for panels that dont have bpp in edid */ | |
1609 | if (intel_connector->base.display_info.bpc == 0 && | |
6aa23e65 | 1610 | (dev_priv->vbt.edp.bpp && dev_priv->vbt.edp.bpp < bpp)) { |
56071a20 | 1611 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", |
6aa23e65 JN |
1612 | dev_priv->vbt.edp.bpp); |
1613 | bpp = dev_priv->vbt.edp.bpp; | |
56071a20 JN |
1614 | } |
1615 | ||
344c5bbc JN |
1616 | /* |
1617 | * Use the maximum clock and number of lanes the eDP panel | |
1618 | * advertizes being capable of. The panels are generally | |
1619 | * designed to support only a single clock and lane | |
1620 | * configuration, and typically these values correspond to the | |
1621 | * native resolution of the panel. | |
1622 | */ | |
1623 | min_lane_count = max_lane_count; | |
1624 | min_clock = max_clock; | |
7984211e | 1625 | } |
657445fe | 1626 | |
36008365 | 1627 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1628 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1629 | bpp); | |
36008365 | 1630 | |
c6930992 | 1631 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1632 | for (lane_count = min_lane_count; |
1633 | lane_count <= max_lane_count; | |
1634 | lane_count <<= 1) { | |
1635 | ||
94ca719e | 1636 | link_clock = common_rates[clock]; |
36008365 DV |
1637 | link_avail = intel_dp_max_data_rate(link_clock, |
1638 | lane_count); | |
1639 | ||
1640 | if (mode_rate <= link_avail) { | |
1641 | goto found; | |
1642 | } | |
1643 | } | |
1644 | } | |
1645 | } | |
c4867936 | 1646 | |
36008365 | 1647 | return false; |
3685a8f3 | 1648 | |
36008365 | 1649 | found: |
55bc60db VS |
1650 | if (intel_dp->color_range_auto) { |
1651 | /* | |
1652 | * See: | |
1653 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1654 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1655 | */ | |
0f2a2a75 VS |
1656 | pipe_config->limited_color_range = |
1657 | bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1; | |
1658 | } else { | |
1659 | pipe_config->limited_color_range = | |
1660 | intel_dp->limited_color_range; | |
55bc60db VS |
1661 | } |
1662 | ||
90a6b7b0 | 1663 | pipe_config->lane_count = lane_count; |
a8f3ef61 | 1664 | |
657445fe | 1665 | pipe_config->pipe_bpp = bpp; |
94ca719e | 1666 | pipe_config->port_clock = common_rates[clock]; |
a4fc5ed6 | 1667 | |
04a60f9f VS |
1668 | intel_dp_compute_rate(intel_dp, pipe_config->port_clock, |
1669 | &link_bw, &rate_select); | |
1670 | ||
1671 | DRM_DEBUG_KMS("DP link bw %02x rate select %02x lane count %d clock %d bpp %d\n", | |
1672 | link_bw, rate_select, pipe_config->lane_count, | |
ff9a6750 | 1673 | pipe_config->port_clock, bpp); |
36008365 DV |
1674 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1675 | mode_rate, link_avail); | |
a4fc5ed6 | 1676 | |
03afc4a2 | 1677 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1678 | adjusted_mode->crtc_clock, |
1679 | pipe_config->port_clock, | |
03afc4a2 | 1680 | &pipe_config->dp_m_n); |
9d1a455b | 1681 | |
439d7ac0 | 1682 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1683 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1684 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1685 | intel_link_compute_m_n(bpp, lane_count, |
1686 | intel_connector->panel.downclock_mode->clock, | |
1687 | pipe_config->port_clock, | |
1688 | &pipe_config->dp_m2_n2); | |
1689 | } | |
1690 | ||
14d41b3b VS |
1691 | /* |
1692 | * DPLL0 VCO may need to be adjusted to get the correct | |
1693 | * clock for eDP. This will affect cdclk as well. | |
1694 | */ | |
1695 | if (is_edp(intel_dp) && | |
1696 | (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))) { | |
1697 | int vco; | |
1698 | ||
1699 | switch (pipe_config->port_clock / 2) { | |
1700 | case 108000: | |
1701 | case 216000: | |
63911d72 | 1702 | vco = 8640000; |
14d41b3b VS |
1703 | break; |
1704 | default: | |
63911d72 | 1705 | vco = 8100000; |
14d41b3b VS |
1706 | break; |
1707 | } | |
1708 | ||
1709 | to_intel_atomic_state(pipe_config->base.state)->cdclk_pll_vco = vco; | |
1710 | } | |
1711 | ||
4f8036a2 | 1712 | if (!HAS_DDI(dev_priv)) |
840b32b7 | 1713 | intel_dp_set_clock(encoder, pipe_config); |
c6bb3538 | 1714 | |
03afc4a2 | 1715 | return true; |
a4fc5ed6 KP |
1716 | } |
1717 | ||
901c2daf | 1718 | void intel_dp_set_link_params(struct intel_dp *intel_dp, |
dfa10480 ACO |
1719 | int link_rate, uint8_t lane_count, |
1720 | bool link_mst) | |
901c2daf | 1721 | { |
dfa10480 ACO |
1722 | intel_dp->link_rate = link_rate; |
1723 | intel_dp->lane_count = lane_count; | |
1724 | intel_dp->link_mst = link_mst; | |
901c2daf VS |
1725 | } |
1726 | ||
85cb48a1 ML |
1727 | static void intel_dp_prepare(struct intel_encoder *encoder, |
1728 | struct intel_crtc_state *pipe_config) | |
a4fc5ed6 | 1729 | { |
b934223d | 1730 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 1731 | struct drm_i915_private *dev_priv = to_i915(dev); |
b934223d | 1732 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1733 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1734 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
85cb48a1 | 1735 | const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
a4fc5ed6 | 1736 | |
dfa10480 ACO |
1737 | intel_dp_set_link_params(intel_dp, pipe_config->port_clock, |
1738 | pipe_config->lane_count, | |
1739 | intel_crtc_has_type(pipe_config, | |
1740 | INTEL_OUTPUT_DP_MST)); | |
901c2daf | 1741 | |
417e822d | 1742 | /* |
1a2eb460 | 1743 | * There are four kinds of DP registers: |
417e822d KP |
1744 | * |
1745 | * IBX PCH | |
1a2eb460 KP |
1746 | * SNB CPU |
1747 | * IVB CPU | |
417e822d KP |
1748 | * CPT PCH |
1749 | * | |
1750 | * IBX PCH and CPU are the same for almost everything, | |
1751 | * except that the CPU DP PLL is configured in this | |
1752 | * register | |
1753 | * | |
1754 | * CPT PCH is quite different, having many bits moved | |
1755 | * to the TRANS_DP_CTL register instead. That | |
1756 | * configuration happens (oddly) in ironlake_pch_enable | |
1757 | */ | |
9c9e7927 | 1758 | |
417e822d KP |
1759 | /* Preserve the BIOS-computed detected bit. This is |
1760 | * supposed to be read-only. | |
1761 | */ | |
1762 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1763 | |
417e822d | 1764 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1765 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
85cb48a1 | 1766 | intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count); |
a4fc5ed6 | 1767 | |
417e822d | 1768 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1769 | |
5db94019 | 1770 | if (IS_GEN7(dev_priv) && port == PORT_A) { |
1a2eb460 KP |
1771 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1772 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1773 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1774 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1775 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1776 | ||
6aba5b6c | 1777 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1778 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1779 | ||
7c62a164 | 1780 | intel_dp->DP |= crtc->pipe << 29; |
6e266956 | 1781 | } else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) { |
e3ef4479 VS |
1782 | u32 trans_dp; |
1783 | ||
39e5fa88 | 1784 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
e3ef4479 VS |
1785 | |
1786 | trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1787 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
1788 | trans_dp |= TRANS_DP_ENH_FRAMING; | |
1789 | else | |
1790 | trans_dp &= ~TRANS_DP_ENH_FRAMING; | |
1791 | I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp); | |
39e5fa88 | 1792 | } else { |
c99f53f7 | 1793 | if (IS_G4X(dev_priv) && pipe_config->limited_color_range) |
0f2a2a75 | 1794 | intel_dp->DP |= DP_COLOR_RANGE_16_235; |
417e822d KP |
1795 | |
1796 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1797 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1798 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1799 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1800 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1801 | ||
6aba5b6c | 1802 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1803 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1804 | ||
920a14b2 | 1805 | if (IS_CHERRYVIEW(dev_priv)) |
44f37d1f | 1806 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); |
39e5fa88 VS |
1807 | else if (crtc->pipe == PIPE_B) |
1808 | intel_dp->DP |= DP_PIPEB_SELECT; | |
32f9d658 | 1809 | } |
a4fc5ed6 KP |
1810 | } |
1811 | ||
ffd6749d PZ |
1812 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1813 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1814 | |
1a5ef5b7 PZ |
1815 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1816 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1817 | |
ffd6749d PZ |
1818 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1819 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1820 | |
de9c1b6b ID |
1821 | static void intel_pps_verify_state(struct drm_i915_private *dev_priv, |
1822 | struct intel_dp *intel_dp); | |
1823 | ||
4be73780 | 1824 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1825 | u32 mask, |
1826 | u32 value) | |
bd943159 | 1827 | { |
30add22d | 1828 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 1829 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0f59a00 | 1830 | i915_reg_t pp_stat_reg, pp_ctrl_reg; |
453c5420 | 1831 | |
e39b999a VS |
1832 | lockdep_assert_held(&dev_priv->pps_mutex); |
1833 | ||
de9c1b6b ID |
1834 | intel_pps_verify_state(dev_priv, intel_dp); |
1835 | ||
bf13e81b JN |
1836 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1837 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1838 | |
99ea7127 | 1839 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1840 | mask, value, |
1841 | I915_READ(pp_stat_reg), | |
1842 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1843 | |
9036ff06 CW |
1844 | if (intel_wait_for_register(dev_priv, |
1845 | pp_stat_reg, mask, value, | |
1846 | 5000)) | |
99ea7127 | 1847 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1848 | I915_READ(pp_stat_reg), |
1849 | I915_READ(pp_ctrl_reg)); | |
54c136d4 CW |
1850 | |
1851 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1852 | } |
32ce697c | 1853 | |
4be73780 | 1854 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1855 | { |
1856 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1857 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1858 | } |
1859 | ||
4be73780 | 1860 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1861 | { |
1862 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1863 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1864 | } |
1865 | ||
4be73780 | 1866 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 | 1867 | { |
d28d4731 AK |
1868 | ktime_t panel_power_on_time; |
1869 | s64 panel_power_off_duration; | |
1870 | ||
99ea7127 | 1871 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); |
dce56b3c | 1872 | |
d28d4731 AK |
1873 | /* take the difference of currrent time and panel power off time |
1874 | * and then make panel wait for t11_t12 if needed. */ | |
1875 | panel_power_on_time = ktime_get_boottime(); | |
1876 | panel_power_off_duration = ktime_ms_delta(panel_power_on_time, intel_dp->panel_power_off_time); | |
1877 | ||
dce56b3c PZ |
1878 | /* When we disable the VDD override bit last we have to do the manual |
1879 | * wait. */ | |
d28d4731 AK |
1880 | if (panel_power_off_duration < (s64)intel_dp->panel_power_cycle_delay) |
1881 | wait_remaining_ms_from_jiffies(jiffies, | |
1882 | intel_dp->panel_power_cycle_delay - panel_power_off_duration); | |
dce56b3c | 1883 | |
4be73780 | 1884 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1885 | } |
1886 | ||
4be73780 | 1887 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1888 | { |
1889 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1890 | intel_dp->backlight_on_delay); | |
1891 | } | |
1892 | ||
4be73780 | 1893 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1894 | { |
1895 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1896 | intel_dp->backlight_off_delay); | |
1897 | } | |
99ea7127 | 1898 | |
832dd3c1 KP |
1899 | /* Read the current pp_control value, unlocking the register if it |
1900 | * is locked | |
1901 | */ | |
1902 | ||
453c5420 | 1903 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1904 | { |
453c5420 | 1905 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 1906 | struct drm_i915_private *dev_priv = to_i915(dev); |
453c5420 | 1907 | u32 control; |
832dd3c1 | 1908 | |
e39b999a VS |
1909 | lockdep_assert_held(&dev_priv->pps_mutex); |
1910 | ||
bf13e81b | 1911 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
8090ba8c ID |
1912 | if (WARN_ON(!HAS_DDI(dev_priv) && |
1913 | (control & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS)) { | |
b0a08bec VK |
1914 | control &= ~PANEL_UNLOCK_MASK; |
1915 | control |= PANEL_UNLOCK_REGS; | |
1916 | } | |
832dd3c1 | 1917 | return control; |
bd943159 KP |
1918 | } |
1919 | ||
951468f3 VS |
1920 | /* |
1921 | * Must be paired with edp_panel_vdd_off(). | |
1922 | * Must hold pps_mutex around the whole on/off sequence. | |
1923 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1924 | */ | |
1e0560e0 | 1925 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1926 | { |
30add22d | 1927 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1928 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1929 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fac5e23e | 1930 | struct drm_i915_private *dev_priv = to_i915(dev); |
4e6e1a54 | 1931 | enum intel_display_power_domain power_domain; |
5d613501 | 1932 | u32 pp; |
f0f59a00 | 1933 | i915_reg_t pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1934 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1935 | |
e39b999a VS |
1936 | lockdep_assert_held(&dev_priv->pps_mutex); |
1937 | ||
97af61f5 | 1938 | if (!is_edp(intel_dp)) |
adddaaf4 | 1939 | return false; |
bd943159 | 1940 | |
2c623c11 | 1941 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1942 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1943 | |
4be73780 | 1944 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1945 | return need_to_disable; |
b0665d57 | 1946 | |
25f78f58 | 1947 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4e6e1a54 | 1948 | intel_display_power_get(dev_priv, power_domain); |
e9cb81a2 | 1949 | |
3936fcf4 VS |
1950 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1951 | port_name(intel_dig_port->port)); | |
bd943159 | 1952 | |
4be73780 DV |
1953 | if (!edp_have_panel_power(intel_dp)) |
1954 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1955 | |
453c5420 | 1956 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1957 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1958 | |
bf13e81b JN |
1959 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1960 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1961 | |
1962 | I915_WRITE(pp_ctrl_reg, pp); | |
1963 | POSTING_READ(pp_ctrl_reg); | |
1964 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1965 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1966 | /* |
1967 | * If the panel wasn't on, delay before accessing aux channel | |
1968 | */ | |
4be73780 | 1969 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1970 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1971 | port_name(intel_dig_port->port)); | |
f01eca2e | 1972 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1973 | } |
adddaaf4 JN |
1974 | |
1975 | return need_to_disable; | |
1976 | } | |
1977 | ||
951468f3 VS |
1978 | /* |
1979 | * Must be paired with intel_edp_panel_vdd_off() or | |
1980 | * intel_edp_panel_off(). | |
1981 | * Nested calls to these functions are not allowed since | |
1982 | * we drop the lock. Caller must use some higher level | |
1983 | * locking to prevent nested calls from other threads. | |
1984 | */ | |
b80d6c78 | 1985 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1986 | { |
c695b6b6 | 1987 | bool vdd; |
adddaaf4 | 1988 | |
c695b6b6 VS |
1989 | if (!is_edp(intel_dp)) |
1990 | return; | |
1991 | ||
773538e8 | 1992 | pps_lock(intel_dp); |
c695b6b6 | 1993 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1994 | pps_unlock(intel_dp); |
c695b6b6 | 1995 | |
e2c719b7 | 1996 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1997 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1998 | } |
1999 | ||
4be73780 | 2000 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 2001 | { |
30add22d | 2002 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2003 | struct drm_i915_private *dev_priv = to_i915(dev); |
be2c9196 VS |
2004 | struct intel_digital_port *intel_dig_port = |
2005 | dp_to_dig_port(intel_dp); | |
2006 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
2007 | enum intel_display_power_domain power_domain; | |
5d613501 | 2008 | u32 pp; |
f0f59a00 | 2009 | i915_reg_t pp_stat_reg, pp_ctrl_reg; |
5d613501 | 2010 | |
e39b999a | 2011 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 2012 | |
15e899a0 | 2013 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 2014 | |
15e899a0 | 2015 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 2016 | return; |
b0665d57 | 2017 | |
3936fcf4 VS |
2018 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
2019 | port_name(intel_dig_port->port)); | |
bd943159 | 2020 | |
be2c9196 VS |
2021 | pp = ironlake_get_pp_control(intel_dp); |
2022 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 2023 | |
be2c9196 VS |
2024 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
2025 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 2026 | |
be2c9196 VS |
2027 | I915_WRITE(pp_ctrl_reg, pp); |
2028 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 2029 | |
be2c9196 VS |
2030 | /* Make sure sequencer is idle before allowing subsequent activity */ |
2031 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
2032 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 2033 | |
5a162e22 | 2034 | if ((pp & PANEL_POWER_ON) == 0) |
d28d4731 | 2035 | intel_dp->panel_power_off_time = ktime_get_boottime(); |
e9cb81a2 | 2036 | |
25f78f58 | 2037 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
be2c9196 | 2038 | intel_display_power_put(dev_priv, power_domain); |
bd943159 | 2039 | } |
5d613501 | 2040 | |
4be73780 | 2041 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
2042 | { |
2043 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
2044 | struct intel_dp, panel_vdd_work); | |
bd943159 | 2045 | |
773538e8 | 2046 | pps_lock(intel_dp); |
15e899a0 VS |
2047 | if (!intel_dp->want_panel_vdd) |
2048 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 2049 | pps_unlock(intel_dp); |
bd943159 KP |
2050 | } |
2051 | ||
aba86890 ID |
2052 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
2053 | { | |
2054 | unsigned long delay; | |
2055 | ||
2056 | /* | |
2057 | * Queue the timer to fire a long time from now (relative to the power | |
2058 | * down delay) to keep the panel power up across a sequence of | |
2059 | * operations. | |
2060 | */ | |
2061 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
2062 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
2063 | } | |
2064 | ||
951468f3 VS |
2065 | /* |
2066 | * Must be paired with edp_panel_vdd_on(). | |
2067 | * Must hold pps_mutex around the whole on/off sequence. | |
2068 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
2069 | */ | |
4be73780 | 2070 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 2071 | { |
fac5e23e | 2072 | struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); |
e39b999a VS |
2073 | |
2074 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2075 | ||
97af61f5 KP |
2076 | if (!is_edp(intel_dp)) |
2077 | return; | |
5d613501 | 2078 | |
e2c719b7 | 2079 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 2080 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 2081 | |
bd943159 KP |
2082 | intel_dp->want_panel_vdd = false; |
2083 | ||
aba86890 | 2084 | if (sync) |
4be73780 | 2085 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
2086 | else |
2087 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
2088 | } |
2089 | ||
9f0fb5be | 2090 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 2091 | { |
30add22d | 2092 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2093 | struct drm_i915_private *dev_priv = to_i915(dev); |
99ea7127 | 2094 | u32 pp; |
f0f59a00 | 2095 | i915_reg_t pp_ctrl_reg; |
9934c132 | 2096 | |
9f0fb5be VS |
2097 | lockdep_assert_held(&dev_priv->pps_mutex); |
2098 | ||
97af61f5 | 2099 | if (!is_edp(intel_dp)) |
bd943159 | 2100 | return; |
99ea7127 | 2101 | |
3936fcf4 VS |
2102 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
2103 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 2104 | |
e7a89ace VS |
2105 | if (WARN(edp_have_panel_power(intel_dp), |
2106 | "eDP port %c panel power already on\n", | |
2107 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 2108 | return; |
9934c132 | 2109 | |
4be73780 | 2110 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 2111 | |
bf13e81b | 2112 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 2113 | pp = ironlake_get_pp_control(intel_dp); |
5db94019 | 2114 | if (IS_GEN5(dev_priv)) { |
05ce1a49 KP |
2115 | /* ILK workaround: disable reset around power sequence */ |
2116 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
2117 | I915_WRITE(pp_ctrl_reg, pp); |
2118 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 2119 | } |
37c6c9b0 | 2120 | |
5a162e22 | 2121 | pp |= PANEL_POWER_ON; |
5db94019 | 2122 | if (!IS_GEN5(dev_priv)) |
99ea7127 KP |
2123 | pp |= PANEL_POWER_RESET; |
2124 | ||
453c5420 JB |
2125 | I915_WRITE(pp_ctrl_reg, pp); |
2126 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 2127 | |
4be73780 | 2128 | wait_panel_on(intel_dp); |
dce56b3c | 2129 | intel_dp->last_power_on = jiffies; |
9934c132 | 2130 | |
5db94019 | 2131 | if (IS_GEN5(dev_priv)) { |
05ce1a49 | 2132 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ |
bf13e81b JN |
2133 | I915_WRITE(pp_ctrl_reg, pp); |
2134 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 2135 | } |
9f0fb5be | 2136 | } |
e39b999a | 2137 | |
9f0fb5be VS |
2138 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
2139 | { | |
2140 | if (!is_edp(intel_dp)) | |
2141 | return; | |
2142 | ||
2143 | pps_lock(intel_dp); | |
2144 | edp_panel_on(intel_dp); | |
773538e8 | 2145 | pps_unlock(intel_dp); |
9934c132 JB |
2146 | } |
2147 | ||
9f0fb5be VS |
2148 | |
2149 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 2150 | { |
4e6e1a54 ID |
2151 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2152 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 2153 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2154 | struct drm_i915_private *dev_priv = to_i915(dev); |
4e6e1a54 | 2155 | enum intel_display_power_domain power_domain; |
99ea7127 | 2156 | u32 pp; |
f0f59a00 | 2157 | i915_reg_t pp_ctrl_reg; |
9934c132 | 2158 | |
9f0fb5be VS |
2159 | lockdep_assert_held(&dev_priv->pps_mutex); |
2160 | ||
97af61f5 KP |
2161 | if (!is_edp(intel_dp)) |
2162 | return; | |
37c6c9b0 | 2163 | |
3936fcf4 VS |
2164 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
2165 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 2166 | |
3936fcf4 VS |
2167 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
2168 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 2169 | |
453c5420 | 2170 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
2171 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
2172 | * panels get very unhappy and cease to work. */ | |
5a162e22 | 2173 | pp &= ~(PANEL_POWER_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
b3064154 | 2174 | EDP_BLC_ENABLE); |
453c5420 | 2175 | |
bf13e81b | 2176 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 2177 | |
849e39f5 PZ |
2178 | intel_dp->want_panel_vdd = false; |
2179 | ||
453c5420 JB |
2180 | I915_WRITE(pp_ctrl_reg, pp); |
2181 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 2182 | |
d28d4731 | 2183 | intel_dp->panel_power_off_time = ktime_get_boottime(); |
4be73780 | 2184 | wait_panel_off(intel_dp); |
849e39f5 PZ |
2185 | |
2186 | /* We got a reference when we enabled the VDD. */ | |
25f78f58 | 2187 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4e6e1a54 | 2188 | intel_display_power_put(dev_priv, power_domain); |
9f0fb5be | 2189 | } |
e39b999a | 2190 | |
9f0fb5be VS |
2191 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
2192 | { | |
2193 | if (!is_edp(intel_dp)) | |
2194 | return; | |
e39b999a | 2195 | |
9f0fb5be VS |
2196 | pps_lock(intel_dp); |
2197 | edp_panel_off(intel_dp); | |
773538e8 | 2198 | pps_unlock(intel_dp); |
9934c132 JB |
2199 | } |
2200 | ||
1250d107 JN |
2201 | /* Enable backlight in the panel power control. */ |
2202 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 2203 | { |
da63a9f2 PZ |
2204 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2205 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 2206 | struct drm_i915_private *dev_priv = to_i915(dev); |
32f9d658 | 2207 | u32 pp; |
f0f59a00 | 2208 | i915_reg_t pp_ctrl_reg; |
32f9d658 | 2209 | |
01cb9ea6 JB |
2210 | /* |
2211 | * If we enable the backlight right away following a panel power | |
2212 | * on, we may see slight flicker as the panel syncs with the eDP | |
2213 | * link. So delay a bit to make sure the image is solid before | |
2214 | * allowing it to appear. | |
2215 | */ | |
4be73780 | 2216 | wait_backlight_on(intel_dp); |
e39b999a | 2217 | |
773538e8 | 2218 | pps_lock(intel_dp); |
e39b999a | 2219 | |
453c5420 | 2220 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2221 | pp |= EDP_BLC_ENABLE; |
453c5420 | 2222 | |
bf13e81b | 2223 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2224 | |
2225 | I915_WRITE(pp_ctrl_reg, pp); | |
2226 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 2227 | |
773538e8 | 2228 | pps_unlock(intel_dp); |
32f9d658 ZW |
2229 | } |
2230 | ||
1250d107 JN |
2231 | /* Enable backlight PWM and backlight PP control. */ |
2232 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
2233 | { | |
2234 | if (!is_edp(intel_dp)) | |
2235 | return; | |
2236 | ||
2237 | DRM_DEBUG_KMS("\n"); | |
2238 | ||
2239 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
2240 | _intel_edp_backlight_on(intel_dp); | |
2241 | } | |
2242 | ||
2243 | /* Disable backlight in the panel power control. */ | |
2244 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 2245 | { |
30add22d | 2246 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2247 | struct drm_i915_private *dev_priv = to_i915(dev); |
32f9d658 | 2248 | u32 pp; |
f0f59a00 | 2249 | i915_reg_t pp_ctrl_reg; |
32f9d658 | 2250 | |
f01eca2e KP |
2251 | if (!is_edp(intel_dp)) |
2252 | return; | |
2253 | ||
773538e8 | 2254 | pps_lock(intel_dp); |
e39b999a | 2255 | |
453c5420 | 2256 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2257 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 2258 | |
bf13e81b | 2259 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2260 | |
2261 | I915_WRITE(pp_ctrl_reg, pp); | |
2262 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 2263 | |
773538e8 | 2264 | pps_unlock(intel_dp); |
e39b999a VS |
2265 | |
2266 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 2267 | edp_wait_backlight_off(intel_dp); |
1250d107 | 2268 | } |
f7d2323c | 2269 | |
1250d107 JN |
2270 | /* Disable backlight PP control and backlight PWM. */ |
2271 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
2272 | { | |
2273 | if (!is_edp(intel_dp)) | |
2274 | return; | |
2275 | ||
2276 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 2277 | |
1250d107 | 2278 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 2279 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 2280 | } |
a4fc5ed6 | 2281 | |
73580fb7 JN |
2282 | /* |
2283 | * Hook for controlling the panel power control backlight through the bl_power | |
2284 | * sysfs attribute. Take care to handle multiple calls. | |
2285 | */ | |
2286 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
2287 | bool enable) | |
2288 | { | |
2289 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
2290 | bool is_enabled; |
2291 | ||
773538e8 | 2292 | pps_lock(intel_dp); |
e39b999a | 2293 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 2294 | pps_unlock(intel_dp); |
73580fb7 JN |
2295 | |
2296 | if (is_enabled == enable) | |
2297 | return; | |
2298 | ||
23ba9373 JN |
2299 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2300 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2301 | |
2302 | if (enable) | |
2303 | _intel_edp_backlight_on(intel_dp); | |
2304 | else | |
2305 | _intel_edp_backlight_off(intel_dp); | |
2306 | } | |
2307 | ||
64e1077a VS |
2308 | static void assert_dp_port(struct intel_dp *intel_dp, bool state) |
2309 | { | |
2310 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
2311 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); | |
2312 | bool cur_state = I915_READ(intel_dp->output_reg) & DP_PORT_EN; | |
2313 | ||
2314 | I915_STATE_WARN(cur_state != state, | |
2315 | "DP port %c state assertion failure (expected %s, current %s)\n", | |
2316 | port_name(dig_port->port), | |
87ad3212 | 2317 | onoff(state), onoff(cur_state)); |
64e1077a VS |
2318 | } |
2319 | #define assert_dp_port_disabled(d) assert_dp_port((d), false) | |
2320 | ||
2321 | static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state) | |
2322 | { | |
2323 | bool cur_state = I915_READ(DP_A) & DP_PLL_ENABLE; | |
2324 | ||
2325 | I915_STATE_WARN(cur_state != state, | |
2326 | "eDP PLL state assertion failure (expected %s, current %s)\n", | |
87ad3212 | 2327 | onoff(state), onoff(cur_state)); |
64e1077a VS |
2328 | } |
2329 | #define assert_edp_pll_enabled(d) assert_edp_pll((d), true) | |
2330 | #define assert_edp_pll_disabled(d) assert_edp_pll((d), false) | |
2331 | ||
85cb48a1 ML |
2332 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp, |
2333 | struct intel_crtc_state *pipe_config) | |
d240f20f | 2334 | { |
85cb48a1 | 2335 | struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc); |
64e1077a | 2336 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); |
d240f20f | 2337 | |
64e1077a VS |
2338 | assert_pipe_disabled(dev_priv, crtc->pipe); |
2339 | assert_dp_port_disabled(intel_dp); | |
2340 | assert_edp_pll_disabled(dev_priv); | |
2bd2ad64 | 2341 | |
abfce949 | 2342 | DRM_DEBUG_KMS("enabling eDP PLL for clock %d\n", |
85cb48a1 | 2343 | pipe_config->port_clock); |
abfce949 VS |
2344 | |
2345 | intel_dp->DP &= ~DP_PLL_FREQ_MASK; | |
2346 | ||
85cb48a1 | 2347 | if (pipe_config->port_clock == 162000) |
abfce949 VS |
2348 | intel_dp->DP |= DP_PLL_FREQ_162MHZ; |
2349 | else | |
2350 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; | |
2351 | ||
2352 | I915_WRITE(DP_A, intel_dp->DP); | |
2353 | POSTING_READ(DP_A); | |
2354 | udelay(500); | |
2355 | ||
6b23f3e8 VS |
2356 | /* |
2357 | * [DevILK] Work around required when enabling DP PLL | |
2358 | * while a pipe is enabled going to FDI: | |
2359 | * 1. Wait for the start of vertical blank on the enabled pipe going to FDI | |
2360 | * 2. Program DP PLL enable | |
2361 | */ | |
2362 | if (IS_GEN5(dev_priv)) | |
0f0f74bc | 2363 | intel_wait_for_vblank_if_active(dev_priv, !crtc->pipe); |
6b23f3e8 | 2364 | |
0767935e | 2365 | intel_dp->DP |= DP_PLL_ENABLE; |
6fec7662 | 2366 | |
0767935e | 2367 | I915_WRITE(DP_A, intel_dp->DP); |
298b0b39 JB |
2368 | POSTING_READ(DP_A); |
2369 | udelay(200); | |
d240f20f JB |
2370 | } |
2371 | ||
2bd2ad64 | 2372 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2373 | { |
da63a9f2 | 2374 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
64e1077a VS |
2375 | struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); |
2376 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
d240f20f | 2377 | |
64e1077a VS |
2378 | assert_pipe_disabled(dev_priv, crtc->pipe); |
2379 | assert_dp_port_disabled(intel_dp); | |
2380 | assert_edp_pll_enabled(dev_priv); | |
2bd2ad64 | 2381 | |
abfce949 VS |
2382 | DRM_DEBUG_KMS("disabling eDP PLL\n"); |
2383 | ||
6fec7662 | 2384 | intel_dp->DP &= ~DP_PLL_ENABLE; |
0767935e | 2385 | |
6fec7662 | 2386 | I915_WRITE(DP_A, intel_dp->DP); |
1af5fa1b | 2387 | POSTING_READ(DP_A); |
d240f20f JB |
2388 | udelay(200); |
2389 | } | |
2390 | ||
c7ad3810 | 2391 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2392 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2393 | { |
2394 | int ret, i; | |
2395 | ||
2396 | /* Should have a valid DPCD by this point */ | |
2397 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2398 | return; | |
2399 | ||
2400 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2401 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2402 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2403 | } else { |
2404 | /* | |
2405 | * When turning on, we need to retry for 1ms to give the sink | |
2406 | * time to wake up. | |
2407 | */ | |
2408 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2409 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2410 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2411 | if (ret == 1) |
2412 | break; | |
2413 | msleep(1); | |
2414 | } | |
2415 | } | |
f9cac721 JN |
2416 | |
2417 | if (ret != 1) | |
2418 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2419 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2420 | } |
2421 | ||
19d8fe15 DV |
2422 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2423 | enum pipe *pipe) | |
d240f20f | 2424 | { |
19d8fe15 | 2425 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2426 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 | 2427 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 2428 | struct drm_i915_private *dev_priv = to_i915(dev); |
6d129bea ID |
2429 | enum intel_display_power_domain power_domain; |
2430 | u32 tmp; | |
6fa9a5ec | 2431 | bool ret; |
6d129bea ID |
2432 | |
2433 | power_domain = intel_display_port_power_domain(encoder); | |
6fa9a5ec | 2434 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) |
6d129bea ID |
2435 | return false; |
2436 | ||
6fa9a5ec ID |
2437 | ret = false; |
2438 | ||
6d129bea | 2439 | tmp = I915_READ(intel_dp->output_reg); |
19d8fe15 DV |
2440 | |
2441 | if (!(tmp & DP_PORT_EN)) | |
6fa9a5ec | 2442 | goto out; |
19d8fe15 | 2443 | |
5db94019 | 2444 | if (IS_GEN7(dev_priv) && port == PORT_A) { |
19d8fe15 | 2445 | *pipe = PORT_TO_PIPE_CPT(tmp); |
6e266956 | 2446 | } else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) { |
adc289d7 | 2447 | enum pipe p; |
19d8fe15 | 2448 | |
adc289d7 VS |
2449 | for_each_pipe(dev_priv, p) { |
2450 | u32 trans_dp = I915_READ(TRANS_DP_CTL(p)); | |
2451 | if (TRANS_DP_PIPE_TO_PORT(trans_dp) == port) { | |
2452 | *pipe = p; | |
6fa9a5ec ID |
2453 | ret = true; |
2454 | ||
2455 | goto out; | |
19d8fe15 DV |
2456 | } |
2457 | } | |
19d8fe15 | 2458 | |
4a0833ec | 2459 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
f0f59a00 | 2460 | i915_mmio_reg_offset(intel_dp->output_reg)); |
920a14b2 | 2461 | } else if (IS_CHERRYVIEW(dev_priv)) { |
39e5fa88 VS |
2462 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); |
2463 | } else { | |
2464 | *pipe = PORT_TO_PIPE(tmp); | |
4a0833ec | 2465 | } |
d240f20f | 2466 | |
6fa9a5ec ID |
2467 | ret = true; |
2468 | ||
2469 | out: | |
2470 | intel_display_power_put(dev_priv, power_domain); | |
2471 | ||
2472 | return ret; | |
19d8fe15 | 2473 | } |
d240f20f | 2474 | |
045ac3b5 | 2475 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2476 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2477 | { |
2478 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2479 | u32 tmp, flags = 0; |
63000ef6 | 2480 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 2481 | struct drm_i915_private *dev_priv = to_i915(dev); |
63000ef6 XZ |
2482 | enum port port = dp_to_dig_port(intel_dp)->port; |
2483 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
045ac3b5 | 2484 | |
9ed109a7 | 2485 | tmp = I915_READ(intel_dp->output_reg); |
9fcb1704 JN |
2486 | |
2487 | pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A; | |
9ed109a7 | 2488 | |
6e266956 | 2489 | if (HAS_PCH_CPT(dev_priv) && port != PORT_A) { |
b81e34c2 VS |
2490 | u32 trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
2491 | ||
2492 | if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
63000ef6 XZ |
2493 | flags |= DRM_MODE_FLAG_PHSYNC; |
2494 | else | |
2495 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2496 | |
b81e34c2 | 2497 | if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
63000ef6 XZ |
2498 | flags |= DRM_MODE_FLAG_PVSYNC; |
2499 | else | |
2500 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2501 | } else { | |
39e5fa88 | 2502 | if (tmp & DP_SYNC_HS_HIGH) |
63000ef6 XZ |
2503 | flags |= DRM_MODE_FLAG_PHSYNC; |
2504 | else | |
2505 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2506 | |
39e5fa88 | 2507 | if (tmp & DP_SYNC_VS_HIGH) |
63000ef6 XZ |
2508 | flags |= DRM_MODE_FLAG_PVSYNC; |
2509 | else | |
2510 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2511 | } | |
045ac3b5 | 2512 | |
2d112de7 | 2513 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2514 | |
c99f53f7 | 2515 | if (IS_G4X(dev_priv) && tmp & DP_COLOR_RANGE_16_235) |
8c875fca VS |
2516 | pipe_config->limited_color_range = true; |
2517 | ||
90a6b7b0 VS |
2518 | pipe_config->lane_count = |
2519 | ((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1; | |
2520 | ||
eb14cb74 VS |
2521 | intel_dp_get_m_n(crtc, pipe_config); |
2522 | ||
18442d08 | 2523 | if (port == PORT_A) { |
b377e0df | 2524 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ) |
f1f644dc JB |
2525 | pipe_config->port_clock = 162000; |
2526 | else | |
2527 | pipe_config->port_clock = 270000; | |
2528 | } | |
18442d08 | 2529 | |
e3b247da VS |
2530 | pipe_config->base.adjusted_mode.crtc_clock = |
2531 | intel_dotclock_calculate(pipe_config->port_clock, | |
2532 | &pipe_config->dp_m_n); | |
7f16e5c1 | 2533 | |
6aa23e65 JN |
2534 | if (is_edp(intel_dp) && dev_priv->vbt.edp.bpp && |
2535 | pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) { | |
c6cd2ee2 JN |
2536 | /* |
2537 | * This is a big fat ugly hack. | |
2538 | * | |
2539 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
2540 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
2541 | * unknown we fail to light up. Yet the same BIOS boots up with | |
2542 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
2543 | * max, not what it tells us to use. | |
2544 | * | |
2545 | * Note: This will still be broken if the eDP panel is not lit | |
2546 | * up by the BIOS, and thus we can't get the mode at module | |
2547 | * load. | |
2548 | */ | |
2549 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
6aa23e65 JN |
2550 | pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp); |
2551 | dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp; | |
c6cd2ee2 | 2552 | } |
045ac3b5 JB |
2553 | } |
2554 | ||
fd6bbda9 ML |
2555 | static void intel_disable_dp(struct intel_encoder *encoder, |
2556 | struct intel_crtc_state *old_crtc_state, | |
2557 | struct drm_connector_state *old_conn_state) | |
d240f20f | 2558 | { |
e8cb4558 | 2559 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
85cb48a1 | 2560 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
495a5bb8 | 2561 | |
85cb48a1 | 2562 | if (old_crtc_state->has_audio) |
495a5bb8 | 2563 | intel_audio_codec_disable(encoder); |
6cb49835 | 2564 | |
85cb48a1 | 2565 | if (HAS_PSR(dev_priv) && !HAS_DDI(dev_priv)) |
b32c6f48 RV |
2566 | intel_psr_disable(intel_dp); |
2567 | ||
6cb49835 DV |
2568 | /* Make sure the panel is off before trying to change the mode. But also |
2569 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2570 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2571 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2572 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2573 | intel_edp_panel_off(intel_dp); |
3739850b | 2574 | |
08aff3fe | 2575 | /* disable the port before the pipe on g4x */ |
85cb48a1 | 2576 | if (INTEL_GEN(dev_priv) < 5) |
3739850b | 2577 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2578 | } |
2579 | ||
fd6bbda9 ML |
2580 | static void ilk_post_disable_dp(struct intel_encoder *encoder, |
2581 | struct intel_crtc_state *old_crtc_state, | |
2582 | struct drm_connector_state *old_conn_state) | |
d240f20f | 2583 | { |
2bd2ad64 | 2584 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2585 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2586 | |
49277c31 | 2587 | intel_dp_link_down(intel_dp); |
abfce949 VS |
2588 | |
2589 | /* Only ilk+ has port A */ | |
08aff3fe VS |
2590 | if (port == PORT_A) |
2591 | ironlake_edp_pll_off(intel_dp); | |
49277c31 VS |
2592 | } |
2593 | ||
fd6bbda9 ML |
2594 | static void vlv_post_disable_dp(struct intel_encoder *encoder, |
2595 | struct intel_crtc_state *old_crtc_state, | |
2596 | struct drm_connector_state *old_conn_state) | |
49277c31 VS |
2597 | { |
2598 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2599 | ||
2600 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2601 | } |
2602 | ||
fd6bbda9 ML |
2603 | static void chv_post_disable_dp(struct intel_encoder *encoder, |
2604 | struct intel_crtc_state *old_crtc_state, | |
2605 | struct drm_connector_state *old_conn_state) | |
a8f327fb VS |
2606 | { |
2607 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2608 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 2609 | struct drm_i915_private *dev_priv = to_i915(dev); |
97fd4d5c | 2610 | |
a8f327fb VS |
2611 | intel_dp_link_down(intel_dp); |
2612 | ||
2613 | mutex_lock(&dev_priv->sb_lock); | |
2614 | ||
2615 | /* Assert data lane reset */ | |
2616 | chv_data_lane_soft_reset(encoder, true); | |
580d3811 | 2617 | |
a580516d | 2618 | mutex_unlock(&dev_priv->sb_lock); |
580d3811 VS |
2619 | } |
2620 | ||
7b13b58a VS |
2621 | static void |
2622 | _intel_dp_set_link_train(struct intel_dp *intel_dp, | |
2623 | uint32_t *DP, | |
2624 | uint8_t dp_train_pat) | |
2625 | { | |
2626 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2627 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 2628 | struct drm_i915_private *dev_priv = to_i915(dev); |
7b13b58a VS |
2629 | enum port port = intel_dig_port->port; |
2630 | ||
8b0878a0 PD |
2631 | if (dp_train_pat & DP_TRAINING_PATTERN_MASK) |
2632 | DRM_DEBUG_KMS("Using DP training pattern TPS%d\n", | |
2633 | dp_train_pat & DP_TRAINING_PATTERN_MASK); | |
2634 | ||
4f8036a2 | 2635 | if (HAS_DDI(dev_priv)) { |
7b13b58a VS |
2636 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
2637 | ||
2638 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2639 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2640 | else | |
2641 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2642 | ||
2643 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2644 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2645 | case DP_TRAINING_PATTERN_DISABLE: | |
2646 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; | |
2647 | ||
2648 | break; | |
2649 | case DP_TRAINING_PATTERN_1: | |
2650 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2651 | break; | |
2652 | case DP_TRAINING_PATTERN_2: | |
2653 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2654 | break; | |
2655 | case DP_TRAINING_PATTERN_3: | |
2656 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2657 | break; | |
2658 | } | |
2659 | I915_WRITE(DP_TP_CTL(port), temp); | |
2660 | ||
5db94019 | 2661 | } else if ((IS_GEN7(dev_priv) && port == PORT_A) || |
6e266956 | 2662 | (HAS_PCH_CPT(dev_priv) && port != PORT_A)) { |
7b13b58a VS |
2663 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
2664 | ||
2665 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2666 | case DP_TRAINING_PATTERN_DISABLE: | |
2667 | *DP |= DP_LINK_TRAIN_OFF_CPT; | |
2668 | break; | |
2669 | case DP_TRAINING_PATTERN_1: | |
2670 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; | |
2671 | break; | |
2672 | case DP_TRAINING_PATTERN_2: | |
2673 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; | |
2674 | break; | |
2675 | case DP_TRAINING_PATTERN_3: | |
8b0878a0 | 2676 | DRM_DEBUG_KMS("TPS3 not supported, using TPS2 instead\n"); |
7b13b58a VS |
2677 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
2678 | break; | |
2679 | } | |
2680 | ||
2681 | } else { | |
920a14b2 | 2682 | if (IS_CHERRYVIEW(dev_priv)) |
7b13b58a VS |
2683 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; |
2684 | else | |
2685 | *DP &= ~DP_LINK_TRAIN_MASK; | |
2686 | ||
2687 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2688 | case DP_TRAINING_PATTERN_DISABLE: | |
2689 | *DP |= DP_LINK_TRAIN_OFF; | |
2690 | break; | |
2691 | case DP_TRAINING_PATTERN_1: | |
2692 | *DP |= DP_LINK_TRAIN_PAT_1; | |
2693 | break; | |
2694 | case DP_TRAINING_PATTERN_2: | |
2695 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2696 | break; | |
2697 | case DP_TRAINING_PATTERN_3: | |
920a14b2 | 2698 | if (IS_CHERRYVIEW(dev_priv)) { |
7b13b58a VS |
2699 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; |
2700 | } else { | |
8b0878a0 | 2701 | DRM_DEBUG_KMS("TPS3 not supported, using TPS2 instead\n"); |
7b13b58a VS |
2702 | *DP |= DP_LINK_TRAIN_PAT_2; |
2703 | } | |
2704 | break; | |
2705 | } | |
2706 | } | |
2707 | } | |
2708 | ||
85cb48a1 ML |
2709 | static void intel_dp_enable_port(struct intel_dp *intel_dp, |
2710 | struct intel_crtc_state *old_crtc_state) | |
7b13b58a VS |
2711 | { |
2712 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 2713 | struct drm_i915_private *dev_priv = to_i915(dev); |
7b13b58a | 2714 | |
7b13b58a | 2715 | /* enable with pattern 1 (as per spec) */ |
7b13b58a | 2716 | |
8b0878a0 | 2717 | intel_dp_program_link_training_pattern(intel_dp, DP_TRAINING_PATTERN_1); |
7b713f50 VS |
2718 | |
2719 | /* | |
2720 | * Magic for VLV/CHV. We _must_ first set up the register | |
2721 | * without actually enabling the port, and then do another | |
2722 | * write to enable the port. Otherwise link training will | |
2723 | * fail when the power sequencer is freshly used for this port. | |
2724 | */ | |
2725 | intel_dp->DP |= DP_PORT_EN; | |
85cb48a1 | 2726 | if (old_crtc_state->has_audio) |
6fec7662 | 2727 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
7b713f50 VS |
2728 | |
2729 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
2730 | POSTING_READ(intel_dp->output_reg); | |
580d3811 VS |
2731 | } |
2732 | ||
85cb48a1 | 2733 | static void intel_enable_dp(struct intel_encoder *encoder, |
bbf35e9d ML |
2734 | struct intel_crtc_state *pipe_config, |
2735 | struct drm_connector_state *conn_state) | |
d240f20f | 2736 | { |
e8cb4558 DV |
2737 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2738 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 2739 | struct drm_i915_private *dev_priv = to_i915(dev); |
c1dec79a | 2740 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2741 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
d6fbdd15 | 2742 | enum pipe pipe = crtc->pipe; |
5d613501 | 2743 | |
0c33d8d7 DV |
2744 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2745 | return; | |
5d613501 | 2746 | |
093e3f13 VS |
2747 | pps_lock(intel_dp); |
2748 | ||
920a14b2 | 2749 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
093e3f13 VS |
2750 | vlv_init_panel_power_sequencer(intel_dp); |
2751 | ||
85cb48a1 | 2752 | intel_dp_enable_port(intel_dp, pipe_config); |
093e3f13 VS |
2753 | |
2754 | edp_panel_vdd_on(intel_dp); | |
2755 | edp_panel_on(intel_dp); | |
2756 | edp_panel_vdd_off(intel_dp, true); | |
2757 | ||
2758 | pps_unlock(intel_dp); | |
2759 | ||
920a14b2 | 2760 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
e0fce78f VS |
2761 | unsigned int lane_mask = 0x0; |
2762 | ||
920a14b2 | 2763 | if (IS_CHERRYVIEW(dev_priv)) |
85cb48a1 | 2764 | lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count); |
e0fce78f | 2765 | |
9b6de0a1 VS |
2766 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp), |
2767 | lane_mask); | |
e0fce78f | 2768 | } |
61234fa5 | 2769 | |
f01eca2e | 2770 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2771 | intel_dp_start_link_train(intel_dp); |
3ab9c637 | 2772 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2773 | |
85cb48a1 | 2774 | if (pipe_config->has_audio) { |
c1dec79a | 2775 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
d6fbdd15 | 2776 | pipe_name(pipe)); |
bbf35e9d | 2777 | intel_audio_codec_enable(encoder, pipe_config, conn_state); |
c1dec79a | 2778 | } |
ab1f90f9 | 2779 | } |
89b667f8 | 2780 | |
fd6bbda9 ML |
2781 | static void g4x_enable_dp(struct intel_encoder *encoder, |
2782 | struct intel_crtc_state *pipe_config, | |
2783 | struct drm_connector_state *conn_state) | |
ecff4f3b | 2784 | { |
828f5c6e JN |
2785 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2786 | ||
bbf35e9d | 2787 | intel_enable_dp(encoder, pipe_config, conn_state); |
4be73780 | 2788 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2789 | } |
89b667f8 | 2790 | |
fd6bbda9 ML |
2791 | static void vlv_enable_dp(struct intel_encoder *encoder, |
2792 | struct intel_crtc_state *pipe_config, | |
2793 | struct drm_connector_state *conn_state) | |
ab1f90f9 | 2794 | { |
828f5c6e JN |
2795 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2796 | ||
4be73780 | 2797 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2798 | intel_psr_enable(intel_dp); |
d240f20f JB |
2799 | } |
2800 | ||
fd6bbda9 ML |
2801 | static void g4x_pre_enable_dp(struct intel_encoder *encoder, |
2802 | struct intel_crtc_state *pipe_config, | |
2803 | struct drm_connector_state *conn_state) | |
ab1f90f9 JN |
2804 | { |
2805 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
d6fbdd15 | 2806 | enum port port = dp_to_dig_port(intel_dp)->port; |
ab1f90f9 | 2807 | |
85cb48a1 | 2808 | intel_dp_prepare(encoder, pipe_config); |
8ac33ed3 | 2809 | |
d41f1efb | 2810 | /* Only ilk+ has port A */ |
abfce949 | 2811 | if (port == PORT_A) |
85cb48a1 | 2812 | ironlake_edp_pll_on(intel_dp, pipe_config); |
ab1f90f9 JN |
2813 | } |
2814 | ||
83b84597 VS |
2815 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2816 | { | |
2817 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
fac5e23e | 2818 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
83b84597 | 2819 | enum pipe pipe = intel_dp->pps_pipe; |
44cb734c | 2820 | i915_reg_t pp_on_reg = PP_ON_DELAYS(pipe); |
83b84597 VS |
2821 | |
2822 | edp_panel_vdd_off_sync(intel_dp); | |
2823 | ||
2824 | /* | |
2825 | * VLV seems to get confused when multiple power seqeuencers | |
2826 | * have the same port selected (even if only one has power/vdd | |
2827 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2828 | * CHV on the other hand doesn't seem to mind having the same port | |
2829 | * selected in multiple power seqeuencers, but let's clear the | |
2830 | * port select always when logically disconnecting a power sequencer | |
2831 | * from a port. | |
2832 | */ | |
2833 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2834 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2835 | I915_WRITE(pp_on_reg, 0); | |
2836 | POSTING_READ(pp_on_reg); | |
2837 | ||
2838 | intel_dp->pps_pipe = INVALID_PIPE; | |
2839 | } | |
2840 | ||
a4a5d2f8 VS |
2841 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2842 | enum pipe pipe) | |
2843 | { | |
fac5e23e | 2844 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 VS |
2845 | struct intel_encoder *encoder; |
2846 | ||
2847 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2848 | ||
ac3c12e4 VS |
2849 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2850 | return; | |
2851 | ||
19c8054c | 2852 | for_each_intel_encoder(dev, encoder) { |
a4a5d2f8 | 2853 | struct intel_dp *intel_dp; |
773538e8 | 2854 | enum port port; |
a4a5d2f8 VS |
2855 | |
2856 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2857 | continue; | |
2858 | ||
2859 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2860 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2861 | |
2862 | if (intel_dp->pps_pipe != pipe) | |
2863 | continue; | |
2864 | ||
2865 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2866 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2867 | |
e02f9a06 | 2868 | WARN(encoder->base.crtc, |
034e43c6 VS |
2869 | "stealing pipe %c power sequencer from active eDP port %c\n", |
2870 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2871 | |
a4a5d2f8 | 2872 | /* make sure vdd is off before we steal it */ |
83b84597 | 2873 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2874 | } |
2875 | } | |
2876 | ||
2877 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2878 | { | |
2879 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2880 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2881 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 2882 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 | 2883 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
a4a5d2f8 VS |
2884 | |
2885 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2886 | ||
093e3f13 VS |
2887 | if (!is_edp(intel_dp)) |
2888 | return; | |
2889 | ||
a4a5d2f8 VS |
2890 | if (intel_dp->pps_pipe == crtc->pipe) |
2891 | return; | |
2892 | ||
2893 | /* | |
2894 | * If another power sequencer was being used on this | |
2895 | * port previously make sure to turn off vdd there while | |
2896 | * we still have control of it. | |
2897 | */ | |
2898 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2899 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2900 | |
2901 | /* | |
2902 | * We may be stealing the power | |
2903 | * sequencer from another port. | |
2904 | */ | |
2905 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2906 | ||
2907 | /* now it's all ours */ | |
2908 | intel_dp->pps_pipe = crtc->pipe; | |
2909 | ||
2910 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2911 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2912 | ||
2913 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2914 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2915 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2916 | } |
2917 | ||
fd6bbda9 ML |
2918 | static void vlv_pre_enable_dp(struct intel_encoder *encoder, |
2919 | struct intel_crtc_state *pipe_config, | |
2920 | struct drm_connector_state *conn_state) | |
a4fc5ed6 | 2921 | { |
5f68c275 | 2922 | vlv_phy_pre_encoder_enable(encoder); |
ab1f90f9 | 2923 | |
bbf35e9d | 2924 | intel_enable_dp(encoder, pipe_config, conn_state); |
89b667f8 JB |
2925 | } |
2926 | ||
fd6bbda9 ML |
2927 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder, |
2928 | struct intel_crtc_state *pipe_config, | |
2929 | struct drm_connector_state *conn_state) | |
89b667f8 | 2930 | { |
85cb48a1 | 2931 | intel_dp_prepare(encoder, pipe_config); |
8ac33ed3 | 2932 | |
6da2e616 | 2933 | vlv_phy_pre_pll_enable(encoder); |
a4fc5ed6 KP |
2934 | } |
2935 | ||
fd6bbda9 ML |
2936 | static void chv_pre_enable_dp(struct intel_encoder *encoder, |
2937 | struct intel_crtc_state *pipe_config, | |
2938 | struct drm_connector_state *conn_state) | |
e4a1d846 | 2939 | { |
e7d2a717 | 2940 | chv_phy_pre_encoder_enable(encoder); |
e4a1d846 | 2941 | |
bbf35e9d | 2942 | intel_enable_dp(encoder, pipe_config, conn_state); |
b0b33846 VS |
2943 | |
2944 | /* Second common lane will stay alive on its own now */ | |
e7d2a717 | 2945 | chv_phy_release_cl2_override(encoder); |
e4a1d846 CML |
2946 | } |
2947 | ||
fd6bbda9 ML |
2948 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder, |
2949 | struct intel_crtc_state *pipe_config, | |
2950 | struct drm_connector_state *conn_state) | |
9197c88b | 2951 | { |
85cb48a1 | 2952 | intel_dp_prepare(encoder, pipe_config); |
625695f8 | 2953 | |
419b1b7a | 2954 | chv_phy_pre_pll_enable(encoder); |
9197c88b VS |
2955 | } |
2956 | ||
fd6bbda9 ML |
2957 | static void chv_dp_post_pll_disable(struct intel_encoder *encoder, |
2958 | struct intel_crtc_state *pipe_config, | |
2959 | struct drm_connector_state *conn_state) | |
d6db995f | 2960 | { |
204970b5 | 2961 | chv_phy_post_pll_disable(encoder); |
d6db995f VS |
2962 | } |
2963 | ||
a4fc5ed6 KP |
2964 | /* |
2965 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2966 | * link status information | |
2967 | */ | |
94223d04 | 2968 | bool |
93f62dad | 2969 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2970 | { |
9f085ebb L |
2971 | return drm_dp_dpcd_read(&intel_dp->aux, DP_LANE0_1_STATUS, link_status, |
2972 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2973 | } |
2974 | ||
1100244e | 2975 | /* These are source-specific values. */ |
94223d04 | 2976 | uint8_t |
1a2eb460 | 2977 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2978 | { |
dd11bc10 | 2979 | struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); |
bc7d38a4 | 2980 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2981 | |
e2d214ae | 2982 | if (IS_BROXTON(dev_priv)) |
9314726b | 2983 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
dd11bc10 | 2984 | else if (INTEL_GEN(dev_priv) >= 9) { |
06411f08 | 2985 | if (dev_priv->vbt.edp.low_vswing && port == PORT_A) |
7ad14a29 | 2986 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
5a9d1f1a | 2987 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
920a14b2 | 2988 | } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
bd60018a | 2989 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
5db94019 | 2990 | else if (IS_GEN7(dev_priv) && port == PORT_A) |
bd60018a | 2991 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
6e266956 | 2992 | else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) |
bd60018a | 2993 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
1a2eb460 | 2994 | else |
bd60018a | 2995 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
1a2eb460 KP |
2996 | } |
2997 | ||
94223d04 | 2998 | uint8_t |
1a2eb460 KP |
2999 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) |
3000 | { | |
8652744b | 3001 | struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); |
bc7d38a4 | 3002 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 3003 | |
8652744b | 3004 | if (INTEL_GEN(dev_priv) >= 9) { |
5a9d1f1a DL |
3005 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
3006 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: | |
3007 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3008 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3009 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3010 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3011 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
7ad14a29 SJ |
3012 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
3013 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
5a9d1f1a DL |
3014 | default: |
3015 | return DP_TRAIN_PRE_EMPH_LEVEL_0; | |
3016 | } | |
8652744b | 3017 | } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { |
d6c0d722 | 3018 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3019 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3020 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3021 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3022 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3023 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3024 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3025 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
d6c0d722 | 3026 | default: |
bd60018a | 3027 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
d6c0d722 | 3028 | } |
8652744b | 3029 | } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
e2fa6fba | 3030 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3031 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3032 | return DP_TRAIN_PRE_EMPH_LEVEL_3; | |
3033 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3034 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3035 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3036 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3037 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
e2fa6fba | 3038 | default: |
bd60018a | 3039 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
e2fa6fba | 3040 | } |
8652744b | 3041 | } else if (IS_GEN7(dev_priv) && port == PORT_A) { |
1a2eb460 | 3042 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a SJ |
3043 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3044 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3045 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3046 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3047 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
1a2eb460 | 3048 | default: |
bd60018a | 3049 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 KP |
3050 | } |
3051 | } else { | |
3052 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a SJ |
3053 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
3054 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3055 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: | |
3056 | return DP_TRAIN_PRE_EMPH_LEVEL_2; | |
3057 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: | |
3058 | return DP_TRAIN_PRE_EMPH_LEVEL_1; | |
3059 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: | |
1a2eb460 | 3060 | default: |
bd60018a | 3061 | return DP_TRAIN_PRE_EMPH_LEVEL_0; |
1a2eb460 | 3062 | } |
a4fc5ed6 KP |
3063 | } |
3064 | } | |
3065 | ||
5829975c | 3066 | static uint32_t vlv_signal_levels(struct intel_dp *intel_dp) |
e2fa6fba | 3067 | { |
53d98725 | 3068 | struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; |
e2fa6fba P |
3069 | unsigned long demph_reg_value, preemph_reg_value, |
3070 | uniqtranscale_reg_value; | |
3071 | uint8_t train_set = intel_dp->train_set[0]; | |
e2fa6fba P |
3072 | |
3073 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3074 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e2fa6fba P |
3075 | preemph_reg_value = 0x0004000; |
3076 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3077 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3078 | demph_reg_value = 0x2B405555; |
3079 | uniqtranscale_reg_value = 0x552AB83A; | |
3080 | break; | |
bd60018a | 3081 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3082 | demph_reg_value = 0x2B404040; |
3083 | uniqtranscale_reg_value = 0x5548B83A; | |
3084 | break; | |
bd60018a | 3085 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3086 | demph_reg_value = 0x2B245555; |
3087 | uniqtranscale_reg_value = 0x5560B83A; | |
3088 | break; | |
bd60018a | 3089 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e2fa6fba P |
3090 | demph_reg_value = 0x2B405555; |
3091 | uniqtranscale_reg_value = 0x5598DA3A; | |
3092 | break; | |
3093 | default: | |
3094 | return 0; | |
3095 | } | |
3096 | break; | |
bd60018a | 3097 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e2fa6fba P |
3098 | preemph_reg_value = 0x0002000; |
3099 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3100 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3101 | demph_reg_value = 0x2B404040; |
3102 | uniqtranscale_reg_value = 0x5552B83A; | |
3103 | break; | |
bd60018a | 3104 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3105 | demph_reg_value = 0x2B404848; |
3106 | uniqtranscale_reg_value = 0x5580B83A; | |
3107 | break; | |
bd60018a | 3108 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e2fa6fba P |
3109 | demph_reg_value = 0x2B404040; |
3110 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3111 | break; | |
3112 | default: | |
3113 | return 0; | |
3114 | } | |
3115 | break; | |
bd60018a | 3116 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e2fa6fba P |
3117 | preemph_reg_value = 0x0000000; |
3118 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3119 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3120 | demph_reg_value = 0x2B305555; |
3121 | uniqtranscale_reg_value = 0x5570B83A; | |
3122 | break; | |
bd60018a | 3123 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e2fa6fba P |
3124 | demph_reg_value = 0x2B2B4040; |
3125 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3126 | break; | |
3127 | default: | |
3128 | return 0; | |
3129 | } | |
3130 | break; | |
bd60018a | 3131 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e2fa6fba P |
3132 | preemph_reg_value = 0x0006000; |
3133 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
bd60018a | 3134 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e2fa6fba P |
3135 | demph_reg_value = 0x1B405555; |
3136 | uniqtranscale_reg_value = 0x55ADDA3A; | |
3137 | break; | |
3138 | default: | |
3139 | return 0; | |
3140 | } | |
3141 | break; | |
3142 | default: | |
3143 | return 0; | |
3144 | } | |
3145 | ||
53d98725 ACO |
3146 | vlv_set_phy_signal_level(encoder, demph_reg_value, preemph_reg_value, |
3147 | uniqtranscale_reg_value, 0); | |
e2fa6fba P |
3148 | |
3149 | return 0; | |
3150 | } | |
3151 | ||
5829975c | 3152 | static uint32_t chv_signal_levels(struct intel_dp *intel_dp) |
e4a1d846 | 3153 | { |
b7fa22d8 ACO |
3154 | struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; |
3155 | u32 deemph_reg_value, margin_reg_value; | |
3156 | bool uniq_trans_scale = false; | |
e4a1d846 | 3157 | uint8_t train_set = intel_dp->train_set[0]; |
e4a1d846 CML |
3158 | |
3159 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
bd60018a | 3160 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
e4a1d846 | 3161 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3162 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3163 | deemph_reg_value = 128; |
3164 | margin_reg_value = 52; | |
3165 | break; | |
bd60018a | 3166 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3167 | deemph_reg_value = 128; |
3168 | margin_reg_value = 77; | |
3169 | break; | |
bd60018a | 3170 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3171 | deemph_reg_value = 128; |
3172 | margin_reg_value = 102; | |
3173 | break; | |
bd60018a | 3174 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
e4a1d846 CML |
3175 | deemph_reg_value = 128; |
3176 | margin_reg_value = 154; | |
b7fa22d8 | 3177 | uniq_trans_scale = true; |
e4a1d846 CML |
3178 | break; |
3179 | default: | |
3180 | return 0; | |
3181 | } | |
3182 | break; | |
bd60018a | 3183 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
e4a1d846 | 3184 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3185 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3186 | deemph_reg_value = 85; |
3187 | margin_reg_value = 78; | |
3188 | break; | |
bd60018a | 3189 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3190 | deemph_reg_value = 85; |
3191 | margin_reg_value = 116; | |
3192 | break; | |
bd60018a | 3193 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
e4a1d846 CML |
3194 | deemph_reg_value = 85; |
3195 | margin_reg_value = 154; | |
3196 | break; | |
3197 | default: | |
3198 | return 0; | |
3199 | } | |
3200 | break; | |
bd60018a | 3201 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
e4a1d846 | 3202 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3203 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3204 | deemph_reg_value = 64; |
3205 | margin_reg_value = 104; | |
3206 | break; | |
bd60018a | 3207 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
e4a1d846 CML |
3208 | deemph_reg_value = 64; |
3209 | margin_reg_value = 154; | |
3210 | break; | |
3211 | default: | |
3212 | return 0; | |
3213 | } | |
3214 | break; | |
bd60018a | 3215 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
e4a1d846 | 3216 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3217 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
e4a1d846 CML |
3218 | deemph_reg_value = 43; |
3219 | margin_reg_value = 154; | |
3220 | break; | |
3221 | default: | |
3222 | return 0; | |
3223 | } | |
3224 | break; | |
3225 | default: | |
3226 | return 0; | |
3227 | } | |
3228 | ||
b7fa22d8 ACO |
3229 | chv_set_phy_signal_level(encoder, deemph_reg_value, |
3230 | margin_reg_value, uniq_trans_scale); | |
e4a1d846 CML |
3231 | |
3232 | return 0; | |
3233 | } | |
3234 | ||
a4fc5ed6 | 3235 | static uint32_t |
5829975c | 3236 | gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 3237 | { |
3cf2efb1 | 3238 | uint32_t signal_levels = 0; |
a4fc5ed6 | 3239 | |
3cf2efb1 | 3240 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
bd60018a | 3241 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0: |
a4fc5ed6 KP |
3242 | default: |
3243 | signal_levels |= DP_VOLTAGE_0_4; | |
3244 | break; | |
bd60018a | 3245 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1: |
a4fc5ed6 KP |
3246 | signal_levels |= DP_VOLTAGE_0_6; |
3247 | break; | |
bd60018a | 3248 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2: |
a4fc5ed6 KP |
3249 | signal_levels |= DP_VOLTAGE_0_8; |
3250 | break; | |
bd60018a | 3251 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3: |
a4fc5ed6 KP |
3252 | signal_levels |= DP_VOLTAGE_1_2; |
3253 | break; | |
3254 | } | |
3cf2efb1 | 3255 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
bd60018a | 3256 | case DP_TRAIN_PRE_EMPH_LEVEL_0: |
a4fc5ed6 KP |
3257 | default: |
3258 | signal_levels |= DP_PRE_EMPHASIS_0; | |
3259 | break; | |
bd60018a | 3260 | case DP_TRAIN_PRE_EMPH_LEVEL_1: |
a4fc5ed6 KP |
3261 | signal_levels |= DP_PRE_EMPHASIS_3_5; |
3262 | break; | |
bd60018a | 3263 | case DP_TRAIN_PRE_EMPH_LEVEL_2: |
a4fc5ed6 KP |
3264 | signal_levels |= DP_PRE_EMPHASIS_6; |
3265 | break; | |
bd60018a | 3266 | case DP_TRAIN_PRE_EMPH_LEVEL_3: |
a4fc5ed6 KP |
3267 | signal_levels |= DP_PRE_EMPHASIS_9_5; |
3268 | break; | |
3269 | } | |
3270 | return signal_levels; | |
3271 | } | |
3272 | ||
e3421a18 ZW |
3273 | /* Gen6's DP voltage swing and pre-emphasis control */ |
3274 | static uint32_t | |
5829975c | 3275 | gen6_edp_signal_levels(uint8_t train_set) |
e3421a18 | 3276 | { |
3c5a62b5 YL |
3277 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
3278 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3279 | switch (signal_levels) { | |
bd60018a SJ |
3280 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3281 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3282 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; |
bd60018a | 3283 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3c5a62b5 | 3284 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; |
bd60018a SJ |
3285 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
3286 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2: | |
3c5a62b5 | 3287 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; |
bd60018a SJ |
3288 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
3289 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: | |
3c5a62b5 | 3290 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; |
bd60018a SJ |
3291 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
3292 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0: | |
3c5a62b5 | 3293 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; |
e3421a18 | 3294 | default: |
3c5a62b5 YL |
3295 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
3296 | "0x%x\n", signal_levels); | |
3297 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
3298 | } |
3299 | } | |
3300 | ||
1a2eb460 KP |
3301 | /* Gen7's DP voltage swing and pre-emphasis control */ |
3302 | static uint32_t | |
5829975c | 3303 | gen7_edp_signal_levels(uint8_t train_set) |
1a2eb460 KP |
3304 | { |
3305 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
3306 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
3307 | switch (signal_levels) { | |
bd60018a | 3308 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3309 | return EDP_LINK_TRAIN_400MV_0DB_IVB; |
bd60018a | 3310 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 | 3311 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; |
bd60018a | 3312 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2: |
1a2eb460 KP |
3313 | return EDP_LINK_TRAIN_400MV_6DB_IVB; |
3314 | ||
bd60018a | 3315 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3316 | return EDP_LINK_TRAIN_600MV_0DB_IVB; |
bd60018a | 3317 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3318 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; |
3319 | ||
bd60018a | 3320 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0: |
1a2eb460 | 3321 | return EDP_LINK_TRAIN_800MV_0DB_IVB; |
bd60018a | 3322 | case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1: |
1a2eb460 KP |
3323 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; |
3324 | ||
3325 | default: | |
3326 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
3327 | "0x%x\n", signal_levels); | |
3328 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
3329 | } | |
3330 | } | |
3331 | ||
94223d04 | 3332 | void |
f4eb692e | 3333 | intel_dp_set_signal_levels(struct intel_dp *intel_dp) |
f0a3424e PZ |
3334 | { |
3335 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 3336 | enum port port = intel_dig_port->port; |
f0a3424e | 3337 | struct drm_device *dev = intel_dig_port->base.base.dev; |
b905a915 | 3338 | struct drm_i915_private *dev_priv = to_i915(dev); |
f8896f5d | 3339 | uint32_t signal_levels, mask = 0; |
f0a3424e PZ |
3340 | uint8_t train_set = intel_dp->train_set[0]; |
3341 | ||
4f8036a2 | 3342 | if (HAS_DDI(dev_priv)) { |
f8896f5d DW |
3343 | signal_levels = ddi_signal_levels(intel_dp); |
3344 | ||
e2d214ae | 3345 | if (IS_BROXTON(dev_priv)) |
f8896f5d DW |
3346 | signal_levels = 0; |
3347 | else | |
3348 | mask = DDI_BUF_EMP_MASK; | |
920a14b2 | 3349 | } else if (IS_CHERRYVIEW(dev_priv)) { |
5829975c | 3350 | signal_levels = chv_signal_levels(intel_dp); |
11a914c2 | 3351 | } else if (IS_VALLEYVIEW(dev_priv)) { |
5829975c | 3352 | signal_levels = vlv_signal_levels(intel_dp); |
5db94019 | 3353 | } else if (IS_GEN7(dev_priv) && port == PORT_A) { |
5829975c | 3354 | signal_levels = gen7_edp_signal_levels(train_set); |
f0a3424e | 3355 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
5db94019 | 3356 | } else if (IS_GEN6(dev_priv) && port == PORT_A) { |
5829975c | 3357 | signal_levels = gen6_edp_signal_levels(train_set); |
f0a3424e PZ |
3358 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; |
3359 | } else { | |
5829975c | 3360 | signal_levels = gen4_signal_levels(train_set); |
f0a3424e PZ |
3361 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; |
3362 | } | |
3363 | ||
96fb9f9b VK |
3364 | if (mask) |
3365 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
3366 | ||
3367 | DRM_DEBUG_KMS("Using vswing level %d\n", | |
3368 | train_set & DP_TRAIN_VOLTAGE_SWING_MASK); | |
3369 | DRM_DEBUG_KMS("Using pre-emphasis level %d\n", | |
3370 | (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> | |
3371 | DP_TRAIN_PRE_EMPHASIS_SHIFT); | |
f0a3424e | 3372 | |
f4eb692e | 3373 | intel_dp->DP = (intel_dp->DP & ~mask) | signal_levels; |
b905a915 ACO |
3374 | |
3375 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); | |
3376 | POSTING_READ(intel_dp->output_reg); | |
f0a3424e PZ |
3377 | } |
3378 | ||
94223d04 | 3379 | void |
e9c176d5 ACO |
3380 | intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, |
3381 | uint8_t dp_train_pat) | |
a4fc5ed6 | 3382 | { |
174edf1f | 3383 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
90a6b7b0 VS |
3384 | struct drm_i915_private *dev_priv = |
3385 | to_i915(intel_dig_port->base.base.dev); | |
a4fc5ed6 | 3386 | |
f4eb692e | 3387 | _intel_dp_set_link_train(intel_dp, &intel_dp->DP, dp_train_pat); |
47ea7542 | 3388 | |
f4eb692e | 3389 | I915_WRITE(intel_dp->output_reg, intel_dp->DP); |
ea5b213a | 3390 | POSTING_READ(intel_dp->output_reg); |
e9c176d5 ACO |
3391 | } |
3392 | ||
94223d04 | 3393 | void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3ab9c637 ID |
3394 | { |
3395 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3396 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 3397 | struct drm_i915_private *dev_priv = to_i915(dev); |
3ab9c637 ID |
3398 | enum port port = intel_dig_port->port; |
3399 | uint32_t val; | |
3400 | ||
4f8036a2 | 3401 | if (!HAS_DDI(dev_priv)) |
3ab9c637 ID |
3402 | return; |
3403 | ||
3404 | val = I915_READ(DP_TP_CTL(port)); | |
3405 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3406 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3407 | I915_WRITE(DP_TP_CTL(port), val); | |
3408 | ||
3409 | /* | |
3410 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3411 | * we need to set idle transmission mode is to work around a HW issue | |
3412 | * where we enable the pipe while not in idle link-training mode. | |
3413 | * In this case there is requirement to wait for a minimum number of | |
3414 | * idle patterns to be sent. | |
3415 | */ | |
3416 | if (port == PORT_A) | |
3417 | return; | |
3418 | ||
a767017f CW |
3419 | if (intel_wait_for_register(dev_priv,DP_TP_STATUS(port), |
3420 | DP_TP_STATUS_IDLE_DONE, | |
3421 | DP_TP_STATUS_IDLE_DONE, | |
3422 | 1)) | |
3ab9c637 ID |
3423 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); |
3424 | } | |
3425 | ||
a4fc5ed6 | 3426 | static void |
ea5b213a | 3427 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3428 | { |
da63a9f2 | 3429 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1612c8bd | 3430 | struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); |
bc7d38a4 | 3431 | enum port port = intel_dig_port->port; |
da63a9f2 | 3432 | struct drm_device *dev = intel_dig_port->base.base.dev; |
fac5e23e | 3433 | struct drm_i915_private *dev_priv = to_i915(dev); |
ea5b213a | 3434 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3435 | |
4f8036a2 | 3436 | if (WARN_ON(HAS_DDI(dev_priv))) |
c19b0669 PZ |
3437 | return; |
3438 | ||
0c33d8d7 | 3439 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3440 | return; |
3441 | ||
28c97730 | 3442 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3443 | |
5db94019 | 3444 | if ((IS_GEN7(dev_priv) && port == PORT_A) || |
6e266956 | 3445 | (HAS_PCH_CPT(dev_priv) && port != PORT_A)) { |
e3421a18 | 3446 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
1612c8bd | 3447 | DP |= DP_LINK_TRAIN_PAT_IDLE_CPT; |
e3421a18 | 3448 | } else { |
920a14b2 | 3449 | if (IS_CHERRYVIEW(dev_priv)) |
aad3d14d VS |
3450 | DP &= ~DP_LINK_TRAIN_MASK_CHV; |
3451 | else | |
3452 | DP &= ~DP_LINK_TRAIN_MASK; | |
1612c8bd | 3453 | DP |= DP_LINK_TRAIN_PAT_IDLE; |
e3421a18 | 3454 | } |
1612c8bd | 3455 | I915_WRITE(intel_dp->output_reg, DP); |
fe255d00 | 3456 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3457 | |
1612c8bd VS |
3458 | DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); |
3459 | I915_WRITE(intel_dp->output_reg, DP); | |
3460 | POSTING_READ(intel_dp->output_reg); | |
3461 | ||
3462 | /* | |
3463 | * HW workaround for IBX, we need to move the port | |
3464 | * to transcoder A after disabling it to allow the | |
3465 | * matching HDMI port to be enabled on transcoder A. | |
3466 | */ | |
6e266956 | 3467 | if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) { |
0c241d5b VS |
3468 | /* |
3469 | * We get CPU/PCH FIFO underruns on the other pipe when | |
3470 | * doing the workaround. Sweep them under the rug. | |
3471 | */ | |
3472 | intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false); | |
3473 | intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false); | |
3474 | ||
1612c8bd VS |
3475 | /* always enable with pattern 1 (as per spec) */ |
3476 | DP &= ~(DP_PIPEB_SELECT | DP_LINK_TRAIN_MASK); | |
3477 | DP |= DP_PORT_EN | DP_LINK_TRAIN_PAT_1; | |
3478 | I915_WRITE(intel_dp->output_reg, DP); | |
3479 | POSTING_READ(intel_dp->output_reg); | |
3480 | ||
3481 | DP &= ~DP_PORT_EN; | |
5bddd17f | 3482 | I915_WRITE(intel_dp->output_reg, DP); |
0ca09685 | 3483 | POSTING_READ(intel_dp->output_reg); |
0c241d5b | 3484 | |
0f0f74bc | 3485 | intel_wait_for_vblank_if_active(dev_priv, PIPE_A); |
0c241d5b VS |
3486 | intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true); |
3487 | intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true); | |
5bddd17f EA |
3488 | } |
3489 | ||
f01eca2e | 3490 | msleep(intel_dp->panel_power_down_delay); |
6fec7662 VS |
3491 | |
3492 | intel_dp->DP = DP; | |
a4fc5ed6 KP |
3493 | } |
3494 | ||
24e807e7 | 3495 | bool |
fe5a66f9 | 3496 | intel_dp_read_dpcd(struct intel_dp *intel_dp) |
92fd8fd1 | 3497 | { |
9f085ebb L |
3498 | if (drm_dp_dpcd_read(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3499 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3500 | return false; /* aux transfer failed */ |
92fd8fd1 | 3501 | |
a8e98153 | 3502 | DRM_DEBUG_KMS("DPCD: %*ph\n", (int) sizeof(intel_dp->dpcd), intel_dp->dpcd); |
577c7a50 | 3503 | |
fe5a66f9 VS |
3504 | return intel_dp->dpcd[DP_DPCD_REV] != 0; |
3505 | } | |
edb39244 | 3506 | |
fe5a66f9 VS |
3507 | static bool |
3508 | intel_edp_init_dpcd(struct intel_dp *intel_dp) | |
3509 | { | |
3510 | struct drm_i915_private *dev_priv = | |
3511 | to_i915(dp_to_dig_port(intel_dp)->base.base.dev); | |
30d9aa42 | 3512 | |
fe5a66f9 VS |
3513 | /* this function is meant to be called only once */ |
3514 | WARN_ON(intel_dp->dpcd[DP_DPCD_REV] != 0); | |
30d9aa42 | 3515 | |
fe5a66f9 | 3516 | if (!intel_dp_read_dpcd(intel_dp)) |
30d9aa42 SS |
3517 | return false; |
3518 | ||
12a47a42 ID |
3519 | intel_dp_read_desc(intel_dp); |
3520 | ||
fe5a66f9 VS |
3521 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) |
3522 | dev_priv->no_aux_handshake = intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
3523 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
474d1ec4 | 3524 | |
fe5a66f9 VS |
3525 | /* Check if the panel supports PSR */ |
3526 | drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, | |
3527 | intel_dp->psr_dpcd, | |
3528 | sizeof(intel_dp->psr_dpcd)); | |
3529 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { | |
3530 | dev_priv->psr.sink_support = true; | |
3531 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); | |
3532 | } | |
86ee27b5 | 3533 | |
fe5a66f9 VS |
3534 | if (INTEL_GEN(dev_priv) >= 9 && |
3535 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { | |
3536 | uint8_t frame_sync_cap; | |
3537 | ||
3538 | dev_priv->psr.sink_support = true; | |
3539 | drm_dp_dpcd_read(&intel_dp->aux, | |
3540 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, | |
3541 | &frame_sync_cap, 1); | |
3542 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; | |
3543 | /* PSR2 needs frame sync as well */ | |
3544 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; | |
3545 | DRM_DEBUG_KMS("PSR2 %s on sink", | |
3546 | dev_priv->psr.psr2_support ? "supported" : "not supported"); | |
50003939 JN |
3547 | } |
3548 | ||
fe5a66f9 VS |
3549 | /* Read the eDP Display control capabilities registers */ |
3550 | if ((intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3551 | drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV, | |
f7170e2e DC |
3552 | intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd)) == |
3553 | sizeof(intel_dp->edp_dpcd)) | |
fe5a66f9 VS |
3554 | DRM_DEBUG_KMS("EDP DPCD : %*ph\n", (int) sizeof(intel_dp->edp_dpcd), |
3555 | intel_dp->edp_dpcd); | |
06ea66b6 | 3556 | |
fc0f8e25 | 3557 | /* Intermediate frequency support */ |
fe5a66f9 | 3558 | if (intel_dp->edp_dpcd[0] >= 0x03) { /* eDp v1.4 or higher */ |
94ca719e | 3559 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
ea2d8a42 VS |
3560 | int i; |
3561 | ||
9f085ebb L |
3562 | drm_dp_dpcd_read(&intel_dp->aux, DP_SUPPORTED_LINK_RATES, |
3563 | sink_rates, sizeof(sink_rates)); | |
ea2d8a42 | 3564 | |
94ca719e VS |
3565 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
3566 | int val = le16_to_cpu(sink_rates[i]); | |
ea2d8a42 VS |
3567 | |
3568 | if (val == 0) | |
3569 | break; | |
3570 | ||
af77b974 SJ |
3571 | /* Value read is in kHz while drm clock is saved in deca-kHz */ |
3572 | intel_dp->sink_rates[i] = (val * 200) / 10; | |
ea2d8a42 | 3573 | } |
94ca719e | 3574 | intel_dp->num_sink_rates = i; |
fc0f8e25 | 3575 | } |
0336400e | 3576 | |
fe5a66f9 VS |
3577 | return true; |
3578 | } | |
3579 | ||
3580 | ||
3581 | static bool | |
3582 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
3583 | { | |
3584 | if (!intel_dp_read_dpcd(intel_dp)) | |
3585 | return false; | |
3586 | ||
3587 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_COUNT, | |
3588 | &intel_dp->sink_count, 1) < 0) | |
3589 | return false; | |
3590 | ||
3591 | /* | |
3592 | * Sink count can change between short pulse hpd hence | |
3593 | * a member variable in intel_dp will track any changes | |
3594 | * between short pulse interrupts. | |
3595 | */ | |
3596 | intel_dp->sink_count = DP_GET_SINK_COUNT(intel_dp->sink_count); | |
3597 | ||
3598 | /* | |
3599 | * SINK_COUNT == 0 and DOWNSTREAM_PORT_PRESENT == 1 implies that | |
3600 | * a dongle is present but no display. Unless we require to know | |
3601 | * if a dongle is present or not, we don't need to update | |
3602 | * downstream port information. So, an early return here saves | |
3603 | * time from performing other operations which are not required. | |
3604 | */ | |
3605 | if (!is_edp(intel_dp) && !intel_dp->sink_count) | |
3606 | return false; | |
0336400e | 3607 | |
c726ad01 | 3608 | if (!drm_dp_is_branch(intel_dp->dpcd)) |
edb39244 AJ |
3609 | return true; /* native DP sink */ |
3610 | ||
3611 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3612 | return true; /* no per-port downstream info */ | |
3613 | ||
9f085ebb L |
3614 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3615 | intel_dp->downstream_ports, | |
3616 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3617 | return false; /* downstream port status fetch failed */ |
3618 | ||
3619 | return true; | |
92fd8fd1 KP |
3620 | } |
3621 | ||
0e32b39c | 3622 | static bool |
c4e3170a | 3623 | intel_dp_can_mst(struct intel_dp *intel_dp) |
0e32b39c DA |
3624 | { |
3625 | u8 buf[1]; | |
3626 | ||
7cc96139 NS |
3627 | if (!i915.enable_dp_mst) |
3628 | return false; | |
3629 | ||
0e32b39c DA |
3630 | if (!intel_dp->can_mst) |
3631 | return false; | |
3632 | ||
3633 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3634 | return false; | |
3635 | ||
c4e3170a VS |
3636 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_MSTM_CAP, buf, 1) != 1) |
3637 | return false; | |
0e32b39c | 3638 | |
c4e3170a VS |
3639 | return buf[0] & DP_MST_CAP; |
3640 | } | |
3641 | ||
3642 | static void | |
3643 | intel_dp_configure_mst(struct intel_dp *intel_dp) | |
3644 | { | |
3645 | if (!i915.enable_dp_mst) | |
3646 | return; | |
3647 | ||
3648 | if (!intel_dp->can_mst) | |
3649 | return; | |
3650 | ||
3651 | intel_dp->is_mst = intel_dp_can_mst(intel_dp); | |
3652 | ||
3653 | if (intel_dp->is_mst) | |
3654 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3655 | else | |
3656 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3657 | ||
3658 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, | |
3659 | intel_dp->is_mst); | |
0e32b39c DA |
3660 | } |
3661 | ||
e5a1cab5 | 3662 | static int intel_dp_sink_crc_stop(struct intel_dp *intel_dp) |
d2e216d0 | 3663 | { |
082dcc7c | 3664 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
0f0f74bc | 3665 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); |
082dcc7c | 3666 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
ad9dc91b | 3667 | u8 buf; |
e5a1cab5 | 3668 | int ret = 0; |
c6297843 RV |
3669 | int count = 0; |
3670 | int attempts = 10; | |
d2e216d0 | 3671 | |
082dcc7c RV |
3672 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) { |
3673 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); | |
e5a1cab5 RV |
3674 | ret = -EIO; |
3675 | goto out; | |
4373f0f2 PZ |
3676 | } |
3677 | ||
082dcc7c | 3678 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
e5a1cab5 | 3679 | buf & ~DP_TEST_SINK_START) < 0) { |
082dcc7c | 3680 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); |
e5a1cab5 RV |
3681 | ret = -EIO; |
3682 | goto out; | |
3683 | } | |
d2e216d0 | 3684 | |
c6297843 | 3685 | do { |
0f0f74bc | 3686 | intel_wait_for_vblank(dev_priv, intel_crtc->pipe); |
c6297843 RV |
3687 | |
3688 | if (drm_dp_dpcd_readb(&intel_dp->aux, | |
3689 | DP_TEST_SINK_MISC, &buf) < 0) { | |
3690 | ret = -EIO; | |
3691 | goto out; | |
3692 | } | |
3693 | count = buf & DP_TEST_COUNT_MASK; | |
3694 | } while (--attempts && count); | |
3695 | ||
3696 | if (attempts == 0) { | |
dc5a9037 | 3697 | DRM_DEBUG_KMS("TIMEOUT: Sink CRC counter is not zeroed after calculation is stopped\n"); |
c6297843 RV |
3698 | ret = -ETIMEDOUT; |
3699 | } | |
3700 | ||
e5a1cab5 | 3701 | out: |
082dcc7c | 3702 | hsw_enable_ips(intel_crtc); |
e5a1cab5 | 3703 | return ret; |
082dcc7c RV |
3704 | } |
3705 | ||
3706 | static int intel_dp_sink_crc_start(struct intel_dp *intel_dp) | |
3707 | { | |
3708 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
0f0f74bc | 3709 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); |
082dcc7c RV |
3710 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
3711 | u8 buf; | |
e5a1cab5 RV |
3712 | int ret; |
3713 | ||
082dcc7c RV |
3714 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
3715 | return -EIO; | |
3716 | ||
3717 | if (!(buf & DP_TEST_CRC_SUPPORTED)) | |
3718 | return -ENOTTY; | |
3719 | ||
3720 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) | |
3721 | return -EIO; | |
3722 | ||
6d8175da RV |
3723 | if (buf & DP_TEST_SINK_START) { |
3724 | ret = intel_dp_sink_crc_stop(intel_dp); | |
3725 | if (ret) | |
3726 | return ret; | |
3727 | } | |
3728 | ||
082dcc7c | 3729 | hsw_disable_ips(intel_crtc); |
1dda5f93 | 3730 | |
9d1a1031 | 3731 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
082dcc7c RV |
3732 | buf | DP_TEST_SINK_START) < 0) { |
3733 | hsw_enable_ips(intel_crtc); | |
3734 | return -EIO; | |
4373f0f2 PZ |
3735 | } |
3736 | ||
0f0f74bc | 3737 | intel_wait_for_vblank(dev_priv, intel_crtc->pipe); |
082dcc7c RV |
3738 | return 0; |
3739 | } | |
3740 | ||
3741 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) | |
3742 | { | |
3743 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
0f0f74bc | 3744 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); |
082dcc7c RV |
3745 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
3746 | u8 buf; | |
621d4c76 | 3747 | int count, ret; |
082dcc7c | 3748 | int attempts = 6; |
082dcc7c RV |
3749 | |
3750 | ret = intel_dp_sink_crc_start(intel_dp); | |
3751 | if (ret) | |
3752 | return ret; | |
3753 | ||
ad9dc91b | 3754 | do { |
0f0f74bc | 3755 | intel_wait_for_vblank(dev_priv, intel_crtc->pipe); |
621d4c76 | 3756 | |
1dda5f93 | 3757 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
4373f0f2 PZ |
3758 | DP_TEST_SINK_MISC, &buf) < 0) { |
3759 | ret = -EIO; | |
afe0d67e | 3760 | goto stop; |
4373f0f2 | 3761 | } |
621d4c76 | 3762 | count = buf & DP_TEST_COUNT_MASK; |
aabc95dc | 3763 | |
7e38eeff | 3764 | } while (--attempts && count == 0); |
ad9dc91b RV |
3765 | |
3766 | if (attempts == 0) { | |
7e38eeff RV |
3767 | DRM_ERROR("Panel is unable to calculate any CRC after 6 vblanks\n"); |
3768 | ret = -ETIMEDOUT; | |
3769 | goto stop; | |
3770 | } | |
3771 | ||
3772 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) { | |
3773 | ret = -EIO; | |
3774 | goto stop; | |
ad9dc91b | 3775 | } |
d2e216d0 | 3776 | |
afe0d67e | 3777 | stop: |
082dcc7c | 3778 | intel_dp_sink_crc_stop(intel_dp); |
4373f0f2 | 3779 | return ret; |
d2e216d0 RV |
3780 | } |
3781 | ||
a60f0e38 JB |
3782 | static bool |
3783 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3784 | { | |
9f085ebb | 3785 | return drm_dp_dpcd_read(&intel_dp->aux, |
9d1a1031 JN |
3786 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
3787 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3788 | } |
3789 | ||
0e32b39c DA |
3790 | static bool |
3791 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3792 | { | |
3793 | int ret; | |
3794 | ||
9f085ebb | 3795 | ret = drm_dp_dpcd_read(&intel_dp->aux, |
0e32b39c DA |
3796 | DP_SINK_COUNT_ESI, |
3797 | sink_irq_vector, 14); | |
3798 | if (ret != 14) | |
3799 | return false; | |
3800 | ||
3801 | return true; | |
3802 | } | |
3803 | ||
c5d5ab7a TP |
3804 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
3805 | { | |
3806 | uint8_t test_result = DP_TEST_ACK; | |
3807 | return test_result; | |
3808 | } | |
3809 | ||
3810 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) | |
3811 | { | |
3812 | uint8_t test_result = DP_TEST_NAK; | |
3813 | return test_result; | |
3814 | } | |
3815 | ||
3816 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) | |
a60f0e38 | 3817 | { |
c5d5ab7a | 3818 | uint8_t test_result = DP_TEST_NAK; |
559be30c TP |
3819 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
3820 | struct drm_connector *connector = &intel_connector->base; | |
3821 | ||
3822 | if (intel_connector->detect_edid == NULL || | |
ac6f2e29 | 3823 | connector->edid_corrupt || |
559be30c TP |
3824 | intel_dp->aux.i2c_defer_count > 6) { |
3825 | /* Check EDID read for NACKs, DEFERs and corruption | |
3826 | * (DP CTS 1.2 Core r1.1) | |
3827 | * 4.2.2.4 : Failed EDID read, I2C_NAK | |
3828 | * 4.2.2.5 : Failed EDID read, I2C_DEFER | |
3829 | * 4.2.2.6 : EDID corruption detected | |
3830 | * Use failsafe mode for all cases | |
3831 | */ | |
3832 | if (intel_dp->aux.i2c_nack_count > 0 || | |
3833 | intel_dp->aux.i2c_defer_count > 0) | |
3834 | DRM_DEBUG_KMS("EDID read had %d NACKs, %d DEFERs\n", | |
3835 | intel_dp->aux.i2c_nack_count, | |
3836 | intel_dp->aux.i2c_defer_count); | |
3837 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; | |
3838 | } else { | |
f79b468e TS |
3839 | struct edid *block = intel_connector->detect_edid; |
3840 | ||
3841 | /* We have to write the checksum | |
3842 | * of the last block read | |
3843 | */ | |
3844 | block += intel_connector->detect_edid->extensions; | |
3845 | ||
559be30c TP |
3846 | if (!drm_dp_dpcd_write(&intel_dp->aux, |
3847 | DP_TEST_EDID_CHECKSUM, | |
f79b468e | 3848 | &block->checksum, |
5a1cc655 | 3849 | 1)) |
559be30c TP |
3850 | DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |
3851 | ||
3852 | test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE; | |
3853 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_STANDARD; | |
3854 | } | |
3855 | ||
3856 | /* Set test active flag here so userspace doesn't interrupt things */ | |
3857 | intel_dp->compliance_test_active = 1; | |
3858 | ||
c5d5ab7a TP |
3859 | return test_result; |
3860 | } | |
3861 | ||
3862 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) | |
a60f0e38 | 3863 | { |
c5d5ab7a TP |
3864 | uint8_t test_result = DP_TEST_NAK; |
3865 | return test_result; | |
3866 | } | |
3867 | ||
3868 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3869 | { | |
3870 | uint8_t response = DP_TEST_NAK; | |
3871 | uint8_t rxdata = 0; | |
3872 | int status = 0; | |
3873 | ||
c5d5ab7a TP |
3874 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); |
3875 | if (status <= 0) { | |
3876 | DRM_DEBUG_KMS("Could not read test request from sink\n"); | |
3877 | goto update_status; | |
3878 | } | |
3879 | ||
3880 | switch (rxdata) { | |
3881 | case DP_TEST_LINK_TRAINING: | |
3882 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); | |
3883 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; | |
3884 | response = intel_dp_autotest_link_training(intel_dp); | |
3885 | break; | |
3886 | case DP_TEST_LINK_VIDEO_PATTERN: | |
3887 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); | |
3888 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; | |
3889 | response = intel_dp_autotest_video_pattern(intel_dp); | |
3890 | break; | |
3891 | case DP_TEST_LINK_EDID_READ: | |
3892 | DRM_DEBUG_KMS("EDID test requested\n"); | |
3893 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; | |
3894 | response = intel_dp_autotest_edid(intel_dp); | |
3895 | break; | |
3896 | case DP_TEST_LINK_PHY_TEST_PATTERN: | |
3897 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); | |
3898 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; | |
3899 | response = intel_dp_autotest_phy_pattern(intel_dp); | |
3900 | break; | |
3901 | default: | |
3902 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); | |
3903 | break; | |
3904 | } | |
3905 | ||
3906 | update_status: | |
3907 | status = drm_dp_dpcd_write(&intel_dp->aux, | |
3908 | DP_TEST_RESPONSE, | |
3909 | &response, 1); | |
3910 | if (status <= 0) | |
3911 | DRM_DEBUG_KMS("Could not write test response to sink\n"); | |
a60f0e38 JB |
3912 | } |
3913 | ||
0e32b39c DA |
3914 | static int |
3915 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3916 | { | |
3917 | bool bret; | |
3918 | ||
3919 | if (intel_dp->is_mst) { | |
3920 | u8 esi[16] = { 0 }; | |
3921 | int ret = 0; | |
3922 | int retry; | |
3923 | bool handled; | |
3924 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3925 | go_again: | |
3926 | if (bret == true) { | |
3927 | ||
3928 | /* check link status - esi[10] = 0x200c */ | |
19e0b4ca | 3929 | if (intel_dp->active_mst_links && |
901c2daf | 3930 | !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { |
0e32b39c DA |
3931 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); |
3932 | intel_dp_start_link_train(intel_dp); | |
0e32b39c DA |
3933 | intel_dp_stop_link_train(intel_dp); |
3934 | } | |
3935 | ||
6f34cc39 | 3936 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
3937 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
3938 | ||
3939 | if (handled) { | |
3940 | for (retry = 0; retry < 3; retry++) { | |
3941 | int wret; | |
3942 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3943 | DP_SINK_COUNT_ESI+1, | |
3944 | &esi[1], 3); | |
3945 | if (wret == 3) { | |
3946 | break; | |
3947 | } | |
3948 | } | |
3949 | ||
3950 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3951 | if (bret == true) { | |
6f34cc39 | 3952 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
3953 | goto go_again; |
3954 | } | |
3955 | } else | |
3956 | ret = 0; | |
3957 | ||
3958 | return ret; | |
3959 | } else { | |
3960 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3961 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3962 | intel_dp->is_mst = false; | |
3963 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3964 | /* send a hotplug event */ | |
3965 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3966 | } | |
3967 | } | |
3968 | return -EINVAL; | |
3969 | } | |
3970 | ||
bfd02b3c VS |
3971 | static void |
3972 | intel_dp_retrain_link(struct intel_dp *intel_dp) | |
3973 | { | |
3974 | struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; | |
3975 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); | |
3976 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
3977 | ||
3978 | /* Suppress underruns caused by re-training */ | |
3979 | intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false); | |
3980 | if (crtc->config->has_pch_encoder) | |
3981 | intel_set_pch_fifo_underrun_reporting(dev_priv, | |
3982 | intel_crtc_pch_transcoder(crtc), false); | |
3983 | ||
3984 | intel_dp_start_link_train(intel_dp); | |
3985 | intel_dp_stop_link_train(intel_dp); | |
3986 | ||
3987 | /* Keep underrun reporting disabled until things are stable */ | |
0f0f74bc | 3988 | intel_wait_for_vblank(dev_priv, crtc->pipe); |
bfd02b3c VS |
3989 | |
3990 | intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true); | |
3991 | if (crtc->config->has_pch_encoder) | |
3992 | intel_set_pch_fifo_underrun_reporting(dev_priv, | |
3993 | intel_crtc_pch_transcoder(crtc), true); | |
3994 | } | |
3995 | ||
5c9114d0 SS |
3996 | static void |
3997 | intel_dp_check_link_status(struct intel_dp *intel_dp) | |
3998 | { | |
3999 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; | |
4000 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4001 | u8 link_status[DP_LINK_STATUS_SIZE]; | |
4002 | ||
4003 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
4004 | ||
4005 | if (!intel_dp_get_link_status(intel_dp, link_status)) { | |
4006 | DRM_ERROR("Failed to get link status\n"); | |
4007 | return; | |
4008 | } | |
4009 | ||
4010 | if (!intel_encoder->base.crtc) | |
4011 | return; | |
4012 | ||
4013 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) | |
4014 | return; | |
4015 | ||
d4cb3fd9 MA |
4016 | /* FIXME: we need to synchronize this sort of stuff with hardware |
4017 | * readout */ | |
4018 | if (WARN_ON_ONCE(!intel_dp->lane_count)) | |
4019 | return; | |
4020 | ||
5c9114d0 SS |
4021 | /* if link training is requested we should perform it always */ |
4022 | if ((intel_dp->compliance_test_type == DP_TEST_LINK_TRAINING) || | |
4023 | (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count))) { | |
4024 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", | |
4025 | intel_encoder->base.name); | |
bfd02b3c VS |
4026 | |
4027 | intel_dp_retrain_link(intel_dp); | |
5c9114d0 SS |
4028 | } |
4029 | } | |
4030 | ||
a4fc5ed6 KP |
4031 | /* |
4032 | * According to DP spec | |
4033 | * 5.1.2: | |
4034 | * 1. Read DPCD | |
4035 | * 2. Configure link according to Receiver Capabilities | |
4036 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4037 | * 4. Check link status on receipt of hot-plug interrupt | |
39ff747b SS |
4038 | * |
4039 | * intel_dp_short_pulse - handles short pulse interrupts | |
4040 | * when full detection is not required. | |
4041 | * Returns %true if short pulse is handled and full detection | |
4042 | * is NOT required and %false otherwise. | |
a4fc5ed6 | 4043 | */ |
39ff747b | 4044 | static bool |
5c9114d0 | 4045 | intel_dp_short_pulse(struct intel_dp *intel_dp) |
a4fc5ed6 | 4046 | { |
5b215bcf | 4047 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
65fbb4e7 | 4048 | u8 sink_irq_vector = 0; |
39ff747b SS |
4049 | u8 old_sink_count = intel_dp->sink_count; |
4050 | bool ret; | |
5b215bcf | 4051 | |
4df6960e SS |
4052 | /* |
4053 | * Clearing compliance test variables to allow capturing | |
4054 | * of values for next automated test request. | |
4055 | */ | |
4056 | intel_dp->compliance_test_active = 0; | |
4057 | intel_dp->compliance_test_type = 0; | |
4058 | intel_dp->compliance_test_data = 0; | |
4059 | ||
39ff747b SS |
4060 | /* |
4061 | * Now read the DPCD to see if it's actually running | |
4062 | * If the current value of sink count doesn't match with | |
4063 | * the value that was stored earlier or dpcd read failed | |
4064 | * we need to do full detection | |
4065 | */ | |
4066 | ret = intel_dp_get_dpcd(intel_dp); | |
4067 | ||
4068 | if ((old_sink_count != intel_dp->sink_count) || !ret) { | |
4069 | /* No need to proceed if we are going to do full detect */ | |
4070 | return false; | |
59cd09e1 JB |
4071 | } |
4072 | ||
a60f0e38 JB |
4073 | /* Try to read the source of the interrupt */ |
4074 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
65fbb4e7 VS |
4075 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector) && |
4076 | sink_irq_vector != 0) { | |
a60f0e38 | 4077 | /* Clear interrupt source */ |
9d1a1031 JN |
4078 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4079 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4080 | sink_irq_vector); | |
a60f0e38 JB |
4081 | |
4082 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
09b1eb13 | 4083 | DRM_DEBUG_DRIVER("Test request in short pulse not handled\n"); |
a60f0e38 JB |
4084 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
4085 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4086 | } | |
4087 | ||
5c9114d0 SS |
4088 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4089 | intel_dp_check_link_status(intel_dp); | |
4090 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
39ff747b SS |
4091 | |
4092 | return true; | |
a4fc5ed6 | 4093 | } |
a4fc5ed6 | 4094 | |
caf9ab24 | 4095 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4096 | static enum drm_connector_status |
26d61aad | 4097 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4098 | { |
caf9ab24 | 4099 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4100 | uint8_t type; |
4101 | ||
4102 | if (!intel_dp_get_dpcd(intel_dp)) | |
4103 | return connector_status_disconnected; | |
4104 | ||
1034ce70 SS |
4105 | if (is_edp(intel_dp)) |
4106 | return connector_status_connected; | |
4107 | ||
caf9ab24 | 4108 | /* if there's no downstream port, we're done */ |
c726ad01 | 4109 | if (!drm_dp_is_branch(dpcd)) |
26d61aad | 4110 | return connector_status_connected; |
caf9ab24 AJ |
4111 | |
4112 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4113 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4114 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
9d1a1031 | 4115 | |
30d9aa42 SS |
4116 | return intel_dp->sink_count ? |
4117 | connector_status_connected : connector_status_disconnected; | |
caf9ab24 AJ |
4118 | } |
4119 | ||
c4e3170a VS |
4120 | if (intel_dp_can_mst(intel_dp)) |
4121 | return connector_status_connected; | |
4122 | ||
caf9ab24 | 4123 | /* If no HPD, poke DDC gently */ |
0b99836f | 4124 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4125 | return connector_status_connected; |
caf9ab24 AJ |
4126 | |
4127 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4128 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4129 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4130 | if (type == DP_DS_PORT_TYPE_VGA || | |
4131 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4132 | return connector_status_unknown; | |
4133 | } else { | |
4134 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4135 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4136 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4137 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4138 | return connector_status_unknown; | |
4139 | } | |
caf9ab24 AJ |
4140 | |
4141 | /* Anything else is out of spec, warn and ignore */ | |
4142 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4143 | return connector_status_disconnected; |
71ba9000 AJ |
4144 | } |
4145 | ||
d410b56d CW |
4146 | static enum drm_connector_status |
4147 | edp_detect(struct intel_dp *intel_dp) | |
4148 | { | |
4149 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4150 | enum drm_connector_status status; | |
4151 | ||
4152 | status = intel_panel_detect(dev); | |
4153 | if (status == connector_status_unknown) | |
4154 | status = connector_status_connected; | |
4155 | ||
4156 | return status; | |
4157 | } | |
4158 | ||
b93433cc JN |
4159 | static bool ibx_digital_port_connected(struct drm_i915_private *dev_priv, |
4160 | struct intel_digital_port *port) | |
5eb08b69 | 4161 | { |
b93433cc | 4162 | u32 bit; |
01cb9ea6 | 4163 | |
0df53b77 JN |
4164 | switch (port->port) { |
4165 | case PORT_A: | |
4166 | return true; | |
4167 | case PORT_B: | |
4168 | bit = SDE_PORTB_HOTPLUG; | |
4169 | break; | |
4170 | case PORT_C: | |
4171 | bit = SDE_PORTC_HOTPLUG; | |
4172 | break; | |
4173 | case PORT_D: | |
4174 | bit = SDE_PORTD_HOTPLUG; | |
4175 | break; | |
4176 | default: | |
4177 | MISSING_CASE(port->port); | |
4178 | return false; | |
4179 | } | |
4180 | ||
4181 | return I915_READ(SDEISR) & bit; | |
4182 | } | |
4183 | ||
4184 | static bool cpt_digital_port_connected(struct drm_i915_private *dev_priv, | |
4185 | struct intel_digital_port *port) | |
4186 | { | |
4187 | u32 bit; | |
4188 | ||
4189 | switch (port->port) { | |
4190 | case PORT_A: | |
4191 | return true; | |
4192 | case PORT_B: | |
4193 | bit = SDE_PORTB_HOTPLUG_CPT; | |
4194 | break; | |
4195 | case PORT_C: | |
4196 | bit = SDE_PORTC_HOTPLUG_CPT; | |
4197 | break; | |
4198 | case PORT_D: | |
4199 | bit = SDE_PORTD_HOTPLUG_CPT; | |
4200 | break; | |
a78695d3 JN |
4201 | case PORT_E: |
4202 | bit = SDE_PORTE_HOTPLUG_SPT; | |
4203 | break; | |
0df53b77 JN |
4204 | default: |
4205 | MISSING_CASE(port->port); | |
4206 | return false; | |
b93433cc | 4207 | } |
1b469639 | 4208 | |
b93433cc | 4209 | return I915_READ(SDEISR) & bit; |
5eb08b69 ZW |
4210 | } |
4211 | ||
7e66bcf2 | 4212 | static bool g4x_digital_port_connected(struct drm_i915_private *dev_priv, |
1d245987 | 4213 | struct intel_digital_port *port) |
a4fc5ed6 | 4214 | { |
9642c81c | 4215 | u32 bit; |
5eb08b69 | 4216 | |
9642c81c JN |
4217 | switch (port->port) { |
4218 | case PORT_B: | |
4219 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4220 | break; | |
4221 | case PORT_C: | |
4222 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4223 | break; | |
4224 | case PORT_D: | |
4225 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4226 | break; | |
4227 | default: | |
4228 | MISSING_CASE(port->port); | |
4229 | return false; | |
4230 | } | |
4231 | ||
4232 | return I915_READ(PORT_HOTPLUG_STAT) & bit; | |
4233 | } | |
4234 | ||
0780cd36 VS |
4235 | static bool gm45_digital_port_connected(struct drm_i915_private *dev_priv, |
4236 | struct intel_digital_port *port) | |
9642c81c JN |
4237 | { |
4238 | u32 bit; | |
4239 | ||
4240 | switch (port->port) { | |
4241 | case PORT_B: | |
0780cd36 | 4242 | bit = PORTB_HOTPLUG_LIVE_STATUS_GM45; |
9642c81c JN |
4243 | break; |
4244 | case PORT_C: | |
0780cd36 | 4245 | bit = PORTC_HOTPLUG_LIVE_STATUS_GM45; |
9642c81c JN |
4246 | break; |
4247 | case PORT_D: | |
0780cd36 | 4248 | bit = PORTD_HOTPLUG_LIVE_STATUS_GM45; |
9642c81c JN |
4249 | break; |
4250 | default: | |
4251 | MISSING_CASE(port->port); | |
4252 | return false; | |
a4fc5ed6 KP |
4253 | } |
4254 | ||
1d245987 | 4255 | return I915_READ(PORT_HOTPLUG_STAT) & bit; |
2a592bec DA |
4256 | } |
4257 | ||
e464bfde | 4258 | static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv, |
e2ec35a5 | 4259 | struct intel_digital_port *intel_dig_port) |
e464bfde | 4260 | { |
e2ec35a5 SJ |
4261 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4262 | enum port port; | |
e464bfde JN |
4263 | u32 bit; |
4264 | ||
e2ec35a5 SJ |
4265 | intel_hpd_pin_to_port(intel_encoder->hpd_pin, &port); |
4266 | switch (port) { | |
e464bfde JN |
4267 | case PORT_A: |
4268 | bit = BXT_DE_PORT_HP_DDIA; | |
4269 | break; | |
4270 | case PORT_B: | |
4271 | bit = BXT_DE_PORT_HP_DDIB; | |
4272 | break; | |
4273 | case PORT_C: | |
4274 | bit = BXT_DE_PORT_HP_DDIC; | |
4275 | break; | |
4276 | default: | |
e2ec35a5 | 4277 | MISSING_CASE(port); |
e464bfde JN |
4278 | return false; |
4279 | } | |
4280 | ||
4281 | return I915_READ(GEN8_DE_PORT_ISR) & bit; | |
4282 | } | |
4283 | ||
7e66bcf2 JN |
4284 | /* |
4285 | * intel_digital_port_connected - is the specified port connected? | |
4286 | * @dev_priv: i915 private structure | |
4287 | * @port: the port to test | |
4288 | * | |
4289 | * Return %true if @port is connected, %false otherwise. | |
4290 | */ | |
23f889bd | 4291 | static bool intel_digital_port_connected(struct drm_i915_private *dev_priv, |
7e66bcf2 JN |
4292 | struct intel_digital_port *port) |
4293 | { | |
0df53b77 | 4294 | if (HAS_PCH_IBX(dev_priv)) |
7e66bcf2 | 4295 | return ibx_digital_port_connected(dev_priv, port); |
22824fac | 4296 | else if (HAS_PCH_SPLIT(dev_priv)) |
0df53b77 | 4297 | return cpt_digital_port_connected(dev_priv, port); |
e464bfde JN |
4298 | else if (IS_BROXTON(dev_priv)) |
4299 | return bxt_digital_port_connected(dev_priv, port); | |
0780cd36 VS |
4300 | else if (IS_GM45(dev_priv)) |
4301 | return gm45_digital_port_connected(dev_priv, port); | |
7e66bcf2 JN |
4302 | else |
4303 | return g4x_digital_port_connected(dev_priv, port); | |
4304 | } | |
4305 | ||
8c241fef | 4306 | static struct edid * |
beb60608 | 4307 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4308 | { |
beb60608 | 4309 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4310 | |
9cd300e0 JN |
4311 | /* use cached edid if we have one */ |
4312 | if (intel_connector->edid) { | |
9cd300e0 JN |
4313 | /* invalid edid */ |
4314 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4315 | return NULL; |
4316 | ||
55e9edeb | 4317 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4318 | } else |
4319 | return drm_get_edid(&intel_connector->base, | |
4320 | &intel_dp->aux.ddc); | |
4321 | } | |
8c241fef | 4322 | |
beb60608 CW |
4323 | static void |
4324 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4325 | { | |
4326 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4327 | struct edid *edid; | |
8c241fef | 4328 | |
f21a2198 | 4329 | intel_dp_unset_edid(intel_dp); |
beb60608 CW |
4330 | edid = intel_dp_get_edid(intel_dp); |
4331 | intel_connector->detect_edid = edid; | |
4332 | ||
4333 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4334 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4335 | else | |
4336 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4337 | } |
4338 | ||
beb60608 CW |
4339 | static void |
4340 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4341 | { |
beb60608 | 4342 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4343 | |
beb60608 CW |
4344 | kfree(intel_connector->detect_edid); |
4345 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4346 | |
beb60608 CW |
4347 | intel_dp->has_audio = false; |
4348 | } | |
d6f24d0f | 4349 | |
5cb651a7 | 4350 | static enum drm_connector_status |
f21a2198 | 4351 | intel_dp_long_pulse(struct intel_connector *intel_connector) |
a9756bb5 | 4352 | { |
f21a2198 | 4353 | struct drm_connector *connector = &intel_connector->base; |
a9756bb5 | 4354 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
d63885da PZ |
4355 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4356 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4357 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4358 | enum drm_connector_status status; |
671dedd2 | 4359 | enum intel_display_power_domain power_domain; |
65fbb4e7 | 4360 | u8 sink_irq_vector = 0; |
a9756bb5 | 4361 | |
25f78f58 VS |
4362 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4363 | intel_display_power_get(to_i915(dev), power_domain); | |
a9756bb5 | 4364 | |
d410b56d CW |
4365 | /* Can't disconnect eDP, but you can close the lid... */ |
4366 | if (is_edp(intel_dp)) | |
4367 | status = edp_detect(intel_dp); | |
c555a81d ACO |
4368 | else if (intel_digital_port_connected(to_i915(dev), |
4369 | dp_to_dig_port(intel_dp))) | |
4370 | status = intel_dp_detect_dpcd(intel_dp); | |
a9756bb5 | 4371 | else |
c555a81d ACO |
4372 | status = connector_status_disconnected; |
4373 | ||
5cb651a7 | 4374 | if (status == connector_status_disconnected) { |
4df6960e SS |
4375 | intel_dp->compliance_test_active = 0; |
4376 | intel_dp->compliance_test_type = 0; | |
4377 | intel_dp->compliance_test_data = 0; | |
4378 | ||
0e505a08 | 4379 | if (intel_dp->is_mst) { |
4380 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", | |
4381 | intel_dp->is_mst, | |
4382 | intel_dp->mst_mgr.mst_state); | |
4383 | intel_dp->is_mst = false; | |
4384 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, | |
4385 | intel_dp->is_mst); | |
4386 | } | |
4387 | ||
c8c8fb33 | 4388 | goto out; |
4df6960e | 4389 | } |
a9756bb5 | 4390 | |
f21a2198 | 4391 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
cca0502b | 4392 | intel_encoder->type = INTEL_OUTPUT_DP; |
f21a2198 | 4393 | |
fe5a66f9 VS |
4394 | DRM_DEBUG_KMS("Display Port TPS3 support: source %s, sink %s\n", |
4395 | yesno(intel_dp_source_supports_hbr2(intel_dp)), | |
4396 | yesno(drm_dp_tps3_supported(intel_dp->dpcd))); | |
4397 | ||
4398 | intel_dp_print_rates(intel_dp); | |
4399 | ||
7b3fc170 | 4400 | intel_dp_read_desc(intel_dp); |
0e390a33 | 4401 | |
c4e3170a VS |
4402 | intel_dp_configure_mst(intel_dp); |
4403 | ||
4404 | if (intel_dp->is_mst) { | |
f21a2198 SS |
4405 | /* |
4406 | * If we are in MST mode then this connector | |
4407 | * won't appear connected or have anything | |
4408 | * with EDID on it | |
4409 | */ | |
0e32b39c DA |
4410 | status = connector_status_disconnected; |
4411 | goto out; | |
7d23e3c3 SS |
4412 | } else if (connector->status == connector_status_connected) { |
4413 | /* | |
4414 | * If display was connected already and is still connected | |
4415 | * check links status, there has been known issues of | |
4416 | * link loss triggerring long pulse!!!! | |
4417 | */ | |
4418 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
4419 | intel_dp_check_link_status(intel_dp); | |
4420 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
4421 | goto out; | |
0e32b39c DA |
4422 | } |
4423 | ||
4df6960e SS |
4424 | /* |
4425 | * Clearing NACK and defer counts to get their exact values | |
4426 | * while reading EDID which are required by Compliance tests | |
4427 | * 4.2.2.4 and 4.2.2.5 | |
4428 | */ | |
4429 | intel_dp->aux.i2c_nack_count = 0; | |
4430 | intel_dp->aux.i2c_defer_count = 0; | |
4431 | ||
beb60608 | 4432 | intel_dp_set_edid(intel_dp); |
5cb651a7 VS |
4433 | if (is_edp(intel_dp) || intel_connector->detect_edid) |
4434 | status = connector_status_connected; | |
7d23e3c3 | 4435 | intel_dp->detect_done = true; |
c8c8fb33 | 4436 | |
09b1eb13 TP |
4437 | /* Try to read the source of the interrupt */ |
4438 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
65fbb4e7 VS |
4439 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector) && |
4440 | sink_irq_vector != 0) { | |
09b1eb13 TP |
4441 | /* Clear interrupt source */ |
4442 | drm_dp_dpcd_writeb(&intel_dp->aux, | |
4443 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4444 | sink_irq_vector); | |
4445 | ||
4446 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4447 | intel_dp_handle_test_request(intel_dp); | |
4448 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4449 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4450 | } | |
4451 | ||
c8c8fb33 | 4452 | out: |
5cb651a7 | 4453 | if (status != connector_status_connected && !intel_dp->is_mst) |
f21a2198 | 4454 | intel_dp_unset_edid(intel_dp); |
7d23e3c3 | 4455 | |
25f78f58 | 4456 | intel_display_power_put(to_i915(dev), power_domain); |
5cb651a7 | 4457 | return status; |
f21a2198 SS |
4458 | } |
4459 | ||
4460 | static enum drm_connector_status | |
4461 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4462 | { | |
4463 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
5cb651a7 | 4464 | enum drm_connector_status status = connector->status; |
f21a2198 SS |
4465 | |
4466 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", | |
4467 | connector->base.id, connector->name); | |
4468 | ||
7d23e3c3 SS |
4469 | /* If full detect is not performed yet, do a full detect */ |
4470 | if (!intel_dp->detect_done) | |
5cb651a7 | 4471 | status = intel_dp_long_pulse(intel_dp->attached_connector); |
7d23e3c3 SS |
4472 | |
4473 | intel_dp->detect_done = false; | |
f21a2198 | 4474 | |
5cb651a7 | 4475 | return status; |
a4fc5ed6 KP |
4476 | } |
4477 | ||
beb60608 CW |
4478 | static void |
4479 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4480 | { |
df0e9248 | 4481 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4482 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
25f78f58 | 4483 | struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); |
671dedd2 | 4484 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4485 | |
beb60608 CW |
4486 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4487 | connector->base.id, connector->name); | |
4488 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4489 | |
beb60608 CW |
4490 | if (connector->status != connector_status_connected) |
4491 | return; | |
671dedd2 | 4492 | |
25f78f58 VS |
4493 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4494 | intel_display_power_get(dev_priv, power_domain); | |
beb60608 CW |
4495 | |
4496 | intel_dp_set_edid(intel_dp); | |
4497 | ||
25f78f58 | 4498 | intel_display_power_put(dev_priv, power_domain); |
beb60608 CW |
4499 | |
4500 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
cca0502b | 4501 | intel_encoder->type = INTEL_OUTPUT_DP; |
beb60608 CW |
4502 | } |
4503 | ||
4504 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4505 | { | |
4506 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4507 | struct edid *edid; | |
4508 | ||
4509 | edid = intel_connector->detect_edid; | |
4510 | if (edid) { | |
4511 | int ret = intel_connector_update_modes(connector, edid); | |
4512 | if (ret) | |
4513 | return ret; | |
4514 | } | |
32f9d658 | 4515 | |
f8779fda | 4516 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4517 | if (is_edp(intel_attached_dp(connector)) && |
4518 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4519 | struct drm_display_mode *mode; |
beb60608 CW |
4520 | |
4521 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4522 | intel_connector->panel.fixed_mode); |
f8779fda | 4523 | if (mode) { |
32f9d658 ZW |
4524 | drm_mode_probed_add(connector, mode); |
4525 | return 1; | |
4526 | } | |
4527 | } | |
beb60608 | 4528 | |
32f9d658 | 4529 | return 0; |
a4fc5ed6 KP |
4530 | } |
4531 | ||
1aad7ac0 CW |
4532 | static bool |
4533 | intel_dp_detect_audio(struct drm_connector *connector) | |
4534 | { | |
1aad7ac0 | 4535 | bool has_audio = false; |
beb60608 | 4536 | struct edid *edid; |
1aad7ac0 | 4537 | |
beb60608 CW |
4538 | edid = to_intel_connector(connector)->detect_edid; |
4539 | if (edid) | |
1aad7ac0 | 4540 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4541 | |
1aad7ac0 CW |
4542 | return has_audio; |
4543 | } | |
4544 | ||
f684960e CW |
4545 | static int |
4546 | intel_dp_set_property(struct drm_connector *connector, | |
4547 | struct drm_property *property, | |
4548 | uint64_t val) | |
4549 | { | |
fac5e23e | 4550 | struct drm_i915_private *dev_priv = to_i915(connector->dev); |
53b41837 | 4551 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4552 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4553 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4554 | int ret; |
4555 | ||
662595df | 4556 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4557 | if (ret) |
4558 | return ret; | |
4559 | ||
3f43c48d | 4560 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4561 | int i = val; |
4562 | bool has_audio; | |
4563 | ||
4564 | if (i == intel_dp->force_audio) | |
f684960e CW |
4565 | return 0; |
4566 | ||
1aad7ac0 | 4567 | intel_dp->force_audio = i; |
f684960e | 4568 | |
c3e5f67b | 4569 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4570 | has_audio = intel_dp_detect_audio(connector); |
4571 | else | |
c3e5f67b | 4572 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4573 | |
4574 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4575 | return 0; |
4576 | ||
1aad7ac0 | 4577 | intel_dp->has_audio = has_audio; |
f684960e CW |
4578 | goto done; |
4579 | } | |
4580 | ||
e953fd7b | 4581 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 | 4582 | bool old_auto = intel_dp->color_range_auto; |
0f2a2a75 | 4583 | bool old_range = intel_dp->limited_color_range; |
ae4edb80 | 4584 | |
55bc60db VS |
4585 | switch (val) { |
4586 | case INTEL_BROADCAST_RGB_AUTO: | |
4587 | intel_dp->color_range_auto = true; | |
4588 | break; | |
4589 | case INTEL_BROADCAST_RGB_FULL: | |
4590 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4591 | intel_dp->limited_color_range = false; |
55bc60db VS |
4592 | break; |
4593 | case INTEL_BROADCAST_RGB_LIMITED: | |
4594 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4595 | intel_dp->limited_color_range = true; |
55bc60db VS |
4596 | break; |
4597 | default: | |
4598 | return -EINVAL; | |
4599 | } | |
ae4edb80 DV |
4600 | |
4601 | if (old_auto == intel_dp->color_range_auto && | |
0f2a2a75 | 4602 | old_range == intel_dp->limited_color_range) |
ae4edb80 DV |
4603 | return 0; |
4604 | ||
e953fd7b CW |
4605 | goto done; |
4606 | } | |
4607 | ||
53b41837 YN |
4608 | if (is_edp(intel_dp) && |
4609 | property == connector->dev->mode_config.scaling_mode_property) { | |
4610 | if (val == DRM_MODE_SCALE_NONE) { | |
4611 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4612 | return -EINVAL; | |
4613 | } | |
234126c6 VS |
4614 | if (HAS_GMCH_DISPLAY(dev_priv) && |
4615 | val == DRM_MODE_SCALE_CENTER) { | |
4616 | DRM_DEBUG_KMS("centering not supported\n"); | |
4617 | return -EINVAL; | |
4618 | } | |
53b41837 YN |
4619 | |
4620 | if (intel_connector->panel.fitting_mode == val) { | |
4621 | /* the eDP scaling property is not changed */ | |
4622 | return 0; | |
4623 | } | |
4624 | intel_connector->panel.fitting_mode = val; | |
4625 | ||
4626 | goto done; | |
4627 | } | |
4628 | ||
f684960e CW |
4629 | return -EINVAL; |
4630 | ||
4631 | done: | |
c0c36b94 CW |
4632 | if (intel_encoder->base.crtc) |
4633 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4634 | |
4635 | return 0; | |
4636 | } | |
4637 | ||
7a418e34 CW |
4638 | static int |
4639 | intel_dp_connector_register(struct drm_connector *connector) | |
4640 | { | |
4641 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
1ebaa0b9 CW |
4642 | int ret; |
4643 | ||
4644 | ret = intel_connector_register(connector); | |
4645 | if (ret) | |
4646 | return ret; | |
7a418e34 CW |
4647 | |
4648 | i915_debugfs_connector_add(connector); | |
4649 | ||
4650 | DRM_DEBUG_KMS("registering %s bus for %s\n", | |
4651 | intel_dp->aux.name, connector->kdev->kobj.name); | |
4652 | ||
4653 | intel_dp->aux.dev = connector->kdev; | |
4654 | return drm_dp_aux_register(&intel_dp->aux); | |
4655 | } | |
4656 | ||
c191eca1 CW |
4657 | static void |
4658 | intel_dp_connector_unregister(struct drm_connector *connector) | |
4659 | { | |
4660 | drm_dp_aux_unregister(&intel_attached_dp(connector)->aux); | |
4661 | intel_connector_unregister(connector); | |
4662 | } | |
4663 | ||
a4fc5ed6 | 4664 | static void |
73845adf | 4665 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4666 | { |
1d508706 | 4667 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4668 | |
10e972d3 | 4669 | kfree(intel_connector->detect_edid); |
beb60608 | 4670 | |
9cd300e0 JN |
4671 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4672 | kfree(intel_connector->edid); | |
4673 | ||
acd8db10 PZ |
4674 | /* Can't call is_edp() since the encoder may have been destroyed |
4675 | * already. */ | |
4676 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4677 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4678 | |
a4fc5ed6 | 4679 | drm_connector_cleanup(connector); |
55f78c43 | 4680 | kfree(connector); |
a4fc5ed6 KP |
4681 | } |
4682 | ||
00c09d70 | 4683 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4684 | { |
da63a9f2 PZ |
4685 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4686 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4687 | |
0e32b39c | 4688 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4689 | if (is_edp(intel_dp)) { |
4690 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4691 | /* |
4692 | * vdd might still be enabled do to the delayed vdd off. | |
4693 | * Make sure vdd is actually turned off here. | |
4694 | */ | |
773538e8 | 4695 | pps_lock(intel_dp); |
4be73780 | 4696 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4697 | pps_unlock(intel_dp); |
4698 | ||
01527b31 CT |
4699 | if (intel_dp->edp_notifier.notifier_call) { |
4700 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4701 | intel_dp->edp_notifier.notifier_call = NULL; | |
4702 | } | |
bd943159 | 4703 | } |
99681886 CW |
4704 | |
4705 | intel_dp_aux_fini(intel_dp); | |
4706 | ||
c8bd0e49 | 4707 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4708 | kfree(intel_dig_port); |
24d05927 DV |
4709 | } |
4710 | ||
bf93ba67 | 4711 | void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
07f9cd0b ID |
4712 | { |
4713 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4714 | ||
4715 | if (!is_edp(intel_dp)) | |
4716 | return; | |
4717 | ||
951468f3 VS |
4718 | /* |
4719 | * vdd might still be enabled do to the delayed vdd off. | |
4720 | * Make sure vdd is actually turned off here. | |
4721 | */ | |
afa4e53a | 4722 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4723 | pps_lock(intel_dp); |
07f9cd0b | 4724 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4725 | pps_unlock(intel_dp); |
07f9cd0b ID |
4726 | } |
4727 | ||
49e6bc51 VS |
4728 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4729 | { | |
4730 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4731 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 4732 | struct drm_i915_private *dev_priv = to_i915(dev); |
49e6bc51 VS |
4733 | enum intel_display_power_domain power_domain; |
4734 | ||
4735 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4736 | ||
4737 | if (!edp_have_panel_vdd(intel_dp)) | |
4738 | return; | |
4739 | ||
4740 | /* | |
4741 | * The VDD bit needs a power domain reference, so if the bit is | |
4742 | * already enabled when we boot or resume, grab this reference and | |
4743 | * schedule a vdd off, so we don't hold on to the reference | |
4744 | * indefinitely. | |
4745 | */ | |
4746 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
25f78f58 | 4747 | power_domain = intel_display_port_aux_power_domain(&intel_dig_port->base); |
49e6bc51 VS |
4748 | intel_display_power_get(dev_priv, power_domain); |
4749 | ||
4750 | edp_panel_vdd_schedule_off(intel_dp); | |
4751 | } | |
4752 | ||
bf93ba67 | 4753 | void intel_dp_encoder_reset(struct drm_encoder *encoder) |
6d93c0c4 | 4754 | { |
64989ca4 | 4755 | struct drm_i915_private *dev_priv = to_i915(encoder->dev); |
dd75f6dd ID |
4756 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
4757 | struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp); | |
64989ca4 VS |
4758 | |
4759 | if (!HAS_DDI(dev_priv)) | |
4760 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
49e6bc51 | 4761 | |
dd75f6dd | 4762 | if (lspcon->active) |
910530c0 SS |
4763 | lspcon_resume(lspcon); |
4764 | ||
49e6bc51 VS |
4765 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) |
4766 | return; | |
4767 | ||
49e6bc51 VS |
4768 | pps_lock(intel_dp); |
4769 | ||
335f752b ID |
4770 | /* Reinit the power sequencer, in case BIOS did something with it. */ |
4771 | intel_dp_pps_init(encoder->dev, intel_dp); | |
49e6bc51 VS |
4772 | intel_edp_panel_vdd_sanitize(intel_dp); |
4773 | ||
4774 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4775 | } |
4776 | ||
a4fc5ed6 | 4777 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
4d688a2a | 4778 | .dpms = drm_atomic_helper_connector_dpms, |
a4fc5ed6 | 4779 | .detect = intel_dp_detect, |
beb60608 | 4780 | .force = intel_dp_force, |
a4fc5ed6 | 4781 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4782 | .set_property = intel_dp_set_property, |
2545e4a6 | 4783 | .atomic_get_property = intel_connector_atomic_get_property, |
7a418e34 | 4784 | .late_register = intel_dp_connector_register, |
c191eca1 | 4785 | .early_unregister = intel_dp_connector_unregister, |
73845adf | 4786 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4787 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 4788 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
a4fc5ed6 KP |
4789 | }; |
4790 | ||
4791 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4792 | .get_modes = intel_dp_get_modes, | |
4793 | .mode_valid = intel_dp_mode_valid, | |
a4fc5ed6 KP |
4794 | }; |
4795 | ||
a4fc5ed6 | 4796 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4797 | .reset = intel_dp_encoder_reset, |
24d05927 | 4798 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4799 | }; |
4800 | ||
b2c5c181 | 4801 | enum irqreturn |
13cf5504 DA |
4802 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4803 | { | |
4804 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4805 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c | 4806 | struct drm_device *dev = intel_dig_port->base.base.dev; |
fac5e23e | 4807 | struct drm_i915_private *dev_priv = to_i915(dev); |
1c767b33 | 4808 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4809 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4810 | |
2540058f TI |
4811 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP && |
4812 | intel_dig_port->base.type != INTEL_OUTPUT_HDMI) | |
cca0502b | 4813 | intel_dig_port->base.type = INTEL_OUTPUT_DP; |
13cf5504 | 4814 | |
7a7f84cc VS |
4815 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4816 | /* | |
4817 | * vdd off can generate a long pulse on eDP which | |
4818 | * would require vdd on to handle it, and thus we | |
4819 | * would end up in an endless cycle of | |
4820 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4821 | */ | |
4822 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4823 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4824 | return IRQ_HANDLED; |
7a7f84cc VS |
4825 | } |
4826 | ||
26fbb774 VS |
4827 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4828 | port_name(intel_dig_port->port), | |
0e32b39c | 4829 | long_hpd ? "long" : "short"); |
13cf5504 | 4830 | |
27d4efc5 VS |
4831 | if (long_hpd) { |
4832 | intel_dp->detect_done = false; | |
4833 | return IRQ_NONE; | |
4834 | } | |
4835 | ||
25f78f58 | 4836 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
1c767b33 ID |
4837 | intel_display_power_get(dev_priv, power_domain); |
4838 | ||
27d4efc5 VS |
4839 | if (intel_dp->is_mst) { |
4840 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) { | |
4841 | /* | |
4842 | * If we were in MST mode, and device is not | |
4843 | * there, get out of MST mode | |
4844 | */ | |
4845 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", | |
4846 | intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4847 | intel_dp->is_mst = false; | |
4848 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, | |
4849 | intel_dp->is_mst); | |
4850 | intel_dp->detect_done = false; | |
4851 | goto put_power; | |
0e32b39c | 4852 | } |
27d4efc5 | 4853 | } |
0e32b39c | 4854 | |
27d4efc5 VS |
4855 | if (!intel_dp->is_mst) { |
4856 | if (!intel_dp_short_pulse(intel_dp)) { | |
4857 | intel_dp->detect_done = false; | |
4858 | goto put_power; | |
39ff747b | 4859 | } |
0e32b39c | 4860 | } |
b2c5c181 DV |
4861 | |
4862 | ret = IRQ_HANDLED; | |
4863 | ||
1c767b33 ID |
4864 | put_power: |
4865 | intel_display_power_put(dev_priv, power_domain); | |
4866 | ||
4867 | return ret; | |
13cf5504 DA |
4868 | } |
4869 | ||
477ec328 | 4870 | /* check the VBT to see whether the eDP is on another port */ |
dd11bc10 | 4871 | bool intel_dp_is_edp(struct drm_i915_private *dev_priv, enum port port) |
36e83a18 | 4872 | { |
53ce81a7 VS |
4873 | /* |
4874 | * eDP not supported on g4x. so bail out early just | |
4875 | * for a bit extra safety in case the VBT is bonkers. | |
4876 | */ | |
dd11bc10 | 4877 | if (INTEL_GEN(dev_priv) < 5) |
53ce81a7 VS |
4878 | return false; |
4879 | ||
3b32a35b VS |
4880 | if (port == PORT_A) |
4881 | return true; | |
4882 | ||
951d9efe | 4883 | return intel_bios_is_port_edp(dev_priv, port); |
36e83a18 ZY |
4884 | } |
4885 | ||
0e32b39c | 4886 | void |
f684960e CW |
4887 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4888 | { | |
53b41837 YN |
4889 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4890 | ||
3f43c48d | 4891 | intel_attach_force_audio_property(connector); |
e953fd7b | 4892 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4893 | intel_dp->color_range_auto = true; |
53b41837 YN |
4894 | |
4895 | if (is_edp(intel_dp)) { | |
4896 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4897 | drm_object_attach_property( |
4898 | &connector->base, | |
53b41837 | 4899 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4900 | DRM_MODE_SCALE_ASPECT); |
4901 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4902 | } |
f684960e CW |
4903 | } |
4904 | ||
dada1a9f ID |
4905 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4906 | { | |
d28d4731 | 4907 | intel_dp->panel_power_off_time = ktime_get_boottime(); |
dada1a9f ID |
4908 | intel_dp->last_power_on = jiffies; |
4909 | intel_dp->last_backlight_off = jiffies; | |
4910 | } | |
4911 | ||
67a54566 | 4912 | static void |
54648618 ID |
4913 | intel_pps_readout_hw_state(struct drm_i915_private *dev_priv, |
4914 | struct intel_dp *intel_dp, struct edp_power_seq *seq) | |
67a54566 | 4915 | { |
b0a08bec | 4916 | u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; |
8e8232d5 | 4917 | struct pps_registers regs; |
453c5420 | 4918 | |
8e8232d5 | 4919 | intel_pps_get_registers(dev_priv, intel_dp, ®s); |
67a54566 DV |
4920 | |
4921 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4922 | * the very first thing. */ | |
b0a08bec | 4923 | pp_ctl = ironlake_get_pp_control(intel_dp); |
67a54566 | 4924 | |
8e8232d5 ID |
4925 | pp_on = I915_READ(regs.pp_on); |
4926 | pp_off = I915_READ(regs.pp_off); | |
54648618 | 4927 | if (!IS_BROXTON(dev_priv)) { |
8e8232d5 ID |
4928 | I915_WRITE(regs.pp_ctrl, pp_ctl); |
4929 | pp_div = I915_READ(regs.pp_div); | |
b0a08bec | 4930 | } |
67a54566 DV |
4931 | |
4932 | /* Pull timing values out of registers */ | |
54648618 ID |
4933 | seq->t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> |
4934 | PANEL_POWER_UP_DELAY_SHIFT; | |
67a54566 | 4935 | |
54648618 ID |
4936 | seq->t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> |
4937 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
67a54566 | 4938 | |
54648618 ID |
4939 | seq->t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> |
4940 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
67a54566 | 4941 | |
54648618 ID |
4942 | seq->t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> |
4943 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
67a54566 | 4944 | |
54648618 | 4945 | if (IS_BROXTON(dev_priv)) { |
b0a08bec VK |
4946 | u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> |
4947 | BXT_POWER_CYCLE_DELAY_SHIFT; | |
4948 | if (tmp > 0) | |
54648618 | 4949 | seq->t11_t12 = (tmp - 1) * 1000; |
b0a08bec | 4950 | else |
54648618 | 4951 | seq->t11_t12 = 0; |
b0a08bec | 4952 | } else { |
54648618 | 4953 | seq->t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> |
67a54566 | 4954 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; |
b0a08bec | 4955 | } |
54648618 ID |
4956 | } |
4957 | ||
de9c1b6b ID |
4958 | static void |
4959 | intel_pps_dump_state(const char *state_name, const struct edp_power_seq *seq) | |
4960 | { | |
4961 | DRM_DEBUG_KMS("%s t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4962 | state_name, | |
4963 | seq->t1_t3, seq->t8, seq->t9, seq->t10, seq->t11_t12); | |
4964 | } | |
4965 | ||
4966 | static void | |
4967 | intel_pps_verify_state(struct drm_i915_private *dev_priv, | |
4968 | struct intel_dp *intel_dp) | |
4969 | { | |
4970 | struct edp_power_seq hw; | |
4971 | struct edp_power_seq *sw = &intel_dp->pps_delays; | |
4972 | ||
4973 | intel_pps_readout_hw_state(dev_priv, intel_dp, &hw); | |
4974 | ||
4975 | if (hw.t1_t3 != sw->t1_t3 || hw.t8 != sw->t8 || hw.t9 != sw->t9 || | |
4976 | hw.t10 != sw->t10 || hw.t11_t12 != sw->t11_t12) { | |
4977 | DRM_ERROR("PPS state mismatch\n"); | |
4978 | intel_pps_dump_state("sw", sw); | |
4979 | intel_pps_dump_state("hw", &hw); | |
4980 | } | |
4981 | } | |
4982 | ||
54648618 ID |
4983 | static void |
4984 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
4985 | struct intel_dp *intel_dp) | |
4986 | { | |
fac5e23e | 4987 | struct drm_i915_private *dev_priv = to_i915(dev); |
54648618 ID |
4988 | struct edp_power_seq cur, vbt, spec, |
4989 | *final = &intel_dp->pps_delays; | |
4990 | ||
4991 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4992 | ||
4993 | /* already initialized? */ | |
4994 | if (final->t11_t12 != 0) | |
4995 | return; | |
4996 | ||
4997 | intel_pps_readout_hw_state(dev_priv, intel_dp, &cur); | |
67a54566 | 4998 | |
de9c1b6b | 4999 | intel_pps_dump_state("cur", &cur); |
67a54566 | 5000 | |
6aa23e65 | 5001 | vbt = dev_priv->vbt.edp.pps; |
67a54566 DV |
5002 | |
5003 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
5004 | * our hw here, which are all in 100usec. */ | |
5005 | spec.t1_t3 = 210 * 10; | |
5006 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
5007 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
5008 | spec.t10 = 500 * 10; | |
5009 | /* This one is special and actually in units of 100ms, but zero | |
5010 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
5011 | * table multiplies it with 1000 to make it in units of 100usec, | |
5012 | * too. */ | |
5013 | spec.t11_t12 = (510 + 100) * 10; | |
5014 | ||
de9c1b6b | 5015 | intel_pps_dump_state("vbt", &vbt); |
67a54566 DV |
5016 | |
5017 | /* Use the max of the register settings and vbt. If both are | |
5018 | * unset, fall back to the spec limits. */ | |
36b5f425 | 5019 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
5020 | spec.field : \ |
5021 | max(cur.field, vbt.field)) | |
5022 | assign_final(t1_t3); | |
5023 | assign_final(t8); | |
5024 | assign_final(t9); | |
5025 | assign_final(t10); | |
5026 | assign_final(t11_t12); | |
5027 | #undef assign_final | |
5028 | ||
36b5f425 | 5029 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
5030 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5031 | intel_dp->backlight_on_delay = get_delay(t8); | |
5032 | intel_dp->backlight_off_delay = get_delay(t9); | |
5033 | intel_dp->panel_power_down_delay = get_delay(t10); | |
5034 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
5035 | #undef get_delay | |
5036 | ||
f30d26e4 JN |
5037 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
5038 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
5039 | intel_dp->panel_power_cycle_delay); | |
5040 | ||
5041 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
5042 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
de9c1b6b ID |
5043 | |
5044 | /* | |
5045 | * We override the HW backlight delays to 1 because we do manual waits | |
5046 | * on them. For T8, even BSpec recommends doing it. For T9, if we | |
5047 | * don't do this, we'll end up waiting for the backlight off delay | |
5048 | * twice: once when we do the manual sleep, and once when we disable | |
5049 | * the panel and wait for the PP_STATUS bit to become zero. | |
5050 | */ | |
5051 | final->t8 = 1; | |
5052 | final->t9 = 1; | |
f30d26e4 JN |
5053 | } |
5054 | ||
5055 | static void | |
5056 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 5057 | struct intel_dp *intel_dp) |
f30d26e4 | 5058 | { |
fac5e23e | 5059 | struct drm_i915_private *dev_priv = to_i915(dev); |
453c5420 | 5060 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
e7dc33f3 | 5061 | int div = dev_priv->rawclk_freq / 1000; |
8e8232d5 | 5062 | struct pps_registers regs; |
ad933b56 | 5063 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 5064 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 5065 | |
e39b999a | 5066 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 | 5067 | |
8e8232d5 | 5068 | intel_pps_get_registers(dev_priv, intel_dp, ®s); |
453c5420 | 5069 | |
f30d26e4 | 5070 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
de9c1b6b ID |
5071 | (seq->t8 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5072 | pp_off = (seq->t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 5073 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
5074 | /* Compute the divisor for the pp clock, simply match the Bspec |
5075 | * formula. */ | |
e2d214ae | 5076 | if (IS_BROXTON(dev_priv)) { |
8e8232d5 | 5077 | pp_div = I915_READ(regs.pp_ctrl); |
b0a08bec VK |
5078 | pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; |
5079 | pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) | |
5080 | << BXT_POWER_CYCLE_DELAY_SHIFT); | |
5081 | } else { | |
5082 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; | |
5083 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) | |
5084 | << PANEL_POWER_CYCLE_DELAY_SHIFT); | |
5085 | } | |
67a54566 DV |
5086 | |
5087 | /* Haswell doesn't have any port selection bits for the panel | |
5088 | * power sequencer any more. */ | |
920a14b2 | 5089 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
ad933b56 | 5090 | port_sel = PANEL_PORT_SELECT_VLV(port); |
6e266956 | 5091 | } else if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) { |
ad933b56 | 5092 | if (port == PORT_A) |
a24c144c | 5093 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 5094 | else |
a24c144c | 5095 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
5096 | } |
5097 | ||
453c5420 JB |
5098 | pp_on |= port_sel; |
5099 | ||
8e8232d5 ID |
5100 | I915_WRITE(regs.pp_on, pp_on); |
5101 | I915_WRITE(regs.pp_off, pp_off); | |
e2d214ae | 5102 | if (IS_BROXTON(dev_priv)) |
8e8232d5 | 5103 | I915_WRITE(regs.pp_ctrl, pp_div); |
b0a08bec | 5104 | else |
8e8232d5 | 5105 | I915_WRITE(regs.pp_div, pp_div); |
67a54566 | 5106 | |
67a54566 | 5107 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
8e8232d5 ID |
5108 | I915_READ(regs.pp_on), |
5109 | I915_READ(regs.pp_off), | |
e2d214ae | 5110 | IS_BROXTON(dev_priv) ? |
8e8232d5 ID |
5111 | (I915_READ(regs.pp_ctrl) & BXT_POWER_CYCLE_DELAY_MASK) : |
5112 | I915_READ(regs.pp_div)); | |
f684960e CW |
5113 | } |
5114 | ||
335f752b ID |
5115 | static void intel_dp_pps_init(struct drm_device *dev, |
5116 | struct intel_dp *intel_dp) | |
5117 | { | |
920a14b2 TU |
5118 | struct drm_i915_private *dev_priv = to_i915(dev); |
5119 | ||
5120 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { | |
335f752b ID |
5121 | vlv_initial_power_sequencer_setup(intel_dp); |
5122 | } else { | |
5123 | intel_dp_init_panel_power_sequencer(dev, intel_dp); | |
5124 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
5125 | } | |
5126 | } | |
5127 | ||
b33a2815 VK |
5128 | /** |
5129 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
5423adf1 | 5130 | * @dev_priv: i915 device |
e896402c | 5131 | * @crtc_state: a pointer to the active intel_crtc_state |
b33a2815 VK |
5132 | * @refresh_rate: RR to be programmed |
5133 | * | |
5134 | * This function gets called when refresh rate (RR) has to be changed from | |
5135 | * one frequency to another. Switches can be between high and low RR | |
5136 | * supported by the panel or to any other RR based on media playback (in | |
5137 | * this case, RR value needs to be passed from user space). | |
5138 | * | |
5139 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
5140 | */ | |
85cb48a1 ML |
5141 | static void intel_dp_set_drrs_state(struct drm_i915_private *dev_priv, |
5142 | struct intel_crtc_state *crtc_state, | |
5143 | int refresh_rate) | |
439d7ac0 | 5144 | { |
439d7ac0 | 5145 | struct intel_encoder *encoder; |
96178eeb VK |
5146 | struct intel_digital_port *dig_port = NULL; |
5147 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
85cb48a1 | 5148 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc); |
96178eeb | 5149 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
5150 | |
5151 | if (refresh_rate <= 0) { | |
5152 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
5153 | return; | |
5154 | } | |
5155 | ||
96178eeb VK |
5156 | if (intel_dp == NULL) { |
5157 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
5158 | return; |
5159 | } | |
5160 | ||
1fcc9d1c | 5161 | /* |
e4d59f6b RV |
5162 | * FIXME: This needs proper synchronization with psr state for some |
5163 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 5164 | */ |
439d7ac0 | 5165 | |
96178eeb VK |
5166 | dig_port = dp_to_dig_port(intel_dp); |
5167 | encoder = &dig_port->base; | |
723f9aab | 5168 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
439d7ac0 PB |
5169 | |
5170 | if (!intel_crtc) { | |
5171 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
5172 | return; | |
5173 | } | |
5174 | ||
96178eeb | 5175 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
5176 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5177 | return; | |
5178 | } | |
5179 | ||
96178eeb VK |
5180 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5181 | refresh_rate) | |
439d7ac0 PB |
5182 | index = DRRS_LOW_RR; |
5183 | ||
96178eeb | 5184 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
5185 | DRM_DEBUG_KMS( |
5186 | "DRRS requested for previously set RR...ignoring\n"); | |
5187 | return; | |
5188 | } | |
5189 | ||
85cb48a1 | 5190 | if (!crtc_state->base.active) { |
439d7ac0 PB |
5191 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); |
5192 | return; | |
5193 | } | |
5194 | ||
85cb48a1 | 5195 | if (INTEL_GEN(dev_priv) >= 8 && !IS_CHERRYVIEW(dev_priv)) { |
a4c30b1d VK |
5196 | switch (index) { |
5197 | case DRRS_HIGH_RR: | |
5198 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
5199 | break; | |
5200 | case DRRS_LOW_RR: | |
5201 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
5202 | break; | |
5203 | case DRRS_MAX_RR: | |
5204 | default: | |
5205 | DRM_ERROR("Unsupported refreshrate type\n"); | |
5206 | } | |
85cb48a1 ML |
5207 | } else if (INTEL_GEN(dev_priv) > 6) { |
5208 | i915_reg_t reg = PIPECONF(crtc_state->cpu_transcoder); | |
649636ef | 5209 | u32 val; |
a4c30b1d | 5210 | |
649636ef | 5211 | val = I915_READ(reg); |
439d7ac0 | 5212 | if (index > DRRS_HIGH_RR) { |
85cb48a1 | 5213 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
6fa7aec1 VK |
5214 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
5215 | else | |
5216 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 5217 | } else { |
85cb48a1 | 5218 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
6fa7aec1 VK |
5219 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
5220 | else | |
5221 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5222 | } |
5223 | I915_WRITE(reg, val); | |
5224 | } | |
5225 | ||
4e9ac947 VK |
5226 | dev_priv->drrs.refresh_rate_type = index; |
5227 | ||
5228 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5229 | } | |
5230 | ||
b33a2815 VK |
5231 | /** |
5232 | * intel_edp_drrs_enable - init drrs struct if supported | |
5233 | * @intel_dp: DP struct | |
5423adf1 | 5234 | * @crtc_state: A pointer to the active crtc state. |
b33a2815 VK |
5235 | * |
5236 | * Initializes frontbuffer_bits and drrs.dp | |
5237 | */ | |
85cb48a1 ML |
5238 | void intel_edp_drrs_enable(struct intel_dp *intel_dp, |
5239 | struct intel_crtc_state *crtc_state) | |
c395578e VK |
5240 | { |
5241 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 5242 | struct drm_i915_private *dev_priv = to_i915(dev); |
c395578e | 5243 | |
85cb48a1 | 5244 | if (!crtc_state->has_drrs) { |
c395578e VK |
5245 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); |
5246 | return; | |
5247 | } | |
5248 | ||
5249 | mutex_lock(&dev_priv->drrs.mutex); | |
5250 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5251 | DRM_ERROR("DRRS already enabled\n"); | |
5252 | goto unlock; | |
5253 | } | |
5254 | ||
5255 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5256 | ||
5257 | dev_priv->drrs.dp = intel_dp; | |
5258 | ||
5259 | unlock: | |
5260 | mutex_unlock(&dev_priv->drrs.mutex); | |
5261 | } | |
5262 | ||
b33a2815 VK |
5263 | /** |
5264 | * intel_edp_drrs_disable - Disable DRRS | |
5265 | * @intel_dp: DP struct | |
5423adf1 | 5266 | * @old_crtc_state: Pointer to old crtc_state. |
b33a2815 VK |
5267 | * |
5268 | */ | |
85cb48a1 ML |
5269 | void intel_edp_drrs_disable(struct intel_dp *intel_dp, |
5270 | struct intel_crtc_state *old_crtc_state) | |
c395578e VK |
5271 | { |
5272 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 5273 | struct drm_i915_private *dev_priv = to_i915(dev); |
c395578e | 5274 | |
85cb48a1 | 5275 | if (!old_crtc_state->has_drrs) |
c395578e VK |
5276 | return; |
5277 | ||
5278 | mutex_lock(&dev_priv->drrs.mutex); | |
5279 | if (!dev_priv->drrs.dp) { | |
5280 | mutex_unlock(&dev_priv->drrs.mutex); | |
5281 | return; | |
5282 | } | |
5283 | ||
5284 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
85cb48a1 ML |
5285 | intel_dp_set_drrs_state(dev_priv, old_crtc_state, |
5286 | intel_dp->attached_connector->panel.fixed_mode->vrefresh); | |
c395578e VK |
5287 | |
5288 | dev_priv->drrs.dp = NULL; | |
5289 | mutex_unlock(&dev_priv->drrs.mutex); | |
5290 | ||
5291 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5292 | } | |
5293 | ||
4e9ac947 VK |
5294 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5295 | { | |
5296 | struct drm_i915_private *dev_priv = | |
5297 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5298 | struct intel_dp *intel_dp; | |
5299 | ||
5300 | mutex_lock(&dev_priv->drrs.mutex); | |
5301 | ||
5302 | intel_dp = dev_priv->drrs.dp; | |
5303 | ||
5304 | if (!intel_dp) | |
5305 | goto unlock; | |
5306 | ||
439d7ac0 | 5307 | /* |
4e9ac947 VK |
5308 | * The delayed work can race with an invalidate hence we need to |
5309 | * recheck. | |
439d7ac0 PB |
5310 | */ |
5311 | ||
4e9ac947 VK |
5312 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5313 | goto unlock; | |
439d7ac0 | 5314 | |
85cb48a1 ML |
5315 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) { |
5316 | struct drm_crtc *crtc = dp_to_dig_port(intel_dp)->base.base.crtc; | |
5317 | ||
5318 | intel_dp_set_drrs_state(dev_priv, to_intel_crtc(crtc)->config, | |
5319 | intel_dp->attached_connector->panel.downclock_mode->vrefresh); | |
5320 | } | |
439d7ac0 | 5321 | |
4e9ac947 | 5322 | unlock: |
4e9ac947 | 5323 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5324 | } |
5325 | ||
b33a2815 | 5326 | /** |
0ddfd203 | 5327 | * intel_edp_drrs_invalidate - Disable Idleness DRRS |
5748b6a1 | 5328 | * @dev_priv: i915 device |
b33a2815 VK |
5329 | * @frontbuffer_bits: frontbuffer plane tracking bits |
5330 | * | |
0ddfd203 R |
5331 | * This function gets called everytime rendering on the given planes start. |
5332 | * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR). | |
b33a2815 VK |
5333 | * |
5334 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5335 | */ | |
5748b6a1 CW |
5336 | void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv, |
5337 | unsigned int frontbuffer_bits) | |
a93fad0f | 5338 | { |
a93fad0f VK |
5339 | struct drm_crtc *crtc; |
5340 | enum pipe pipe; | |
5341 | ||
9da7d693 | 5342 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5343 | return; |
5344 | ||
88f933a8 | 5345 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5346 | |
a93fad0f | 5347 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5348 | if (!dev_priv->drrs.dp) { |
5349 | mutex_unlock(&dev_priv->drrs.mutex); | |
5350 | return; | |
5351 | } | |
5352 | ||
a93fad0f VK |
5353 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5354 | pipe = to_intel_crtc(crtc)->pipe; | |
5355 | ||
c1d038c6 DV |
5356 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
5357 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5358 | ||
0ddfd203 | 5359 | /* invalidate means busy screen hence upclock */ |
c1d038c6 | 5360 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
85cb48a1 ML |
5361 | intel_dp_set_drrs_state(dev_priv, to_intel_crtc(crtc)->config, |
5362 | dev_priv->drrs.dp->attached_connector->panel.fixed_mode->vrefresh); | |
a93fad0f | 5363 | |
a93fad0f VK |
5364 | mutex_unlock(&dev_priv->drrs.mutex); |
5365 | } | |
5366 | ||
b33a2815 | 5367 | /** |
0ddfd203 | 5368 | * intel_edp_drrs_flush - Restart Idleness DRRS |
5748b6a1 | 5369 | * @dev_priv: i915 device |
b33a2815 VK |
5370 | * @frontbuffer_bits: frontbuffer plane tracking bits |
5371 | * | |
0ddfd203 R |
5372 | * This function gets called every time rendering on the given planes has |
5373 | * completed or flip on a crtc is completed. So DRRS should be upclocked | |
5374 | * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again, | |
5375 | * if no other planes are dirty. | |
b33a2815 VK |
5376 | * |
5377 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5378 | */ | |
5748b6a1 CW |
5379 | void intel_edp_drrs_flush(struct drm_i915_private *dev_priv, |
5380 | unsigned int frontbuffer_bits) | |
a93fad0f | 5381 | { |
a93fad0f VK |
5382 | struct drm_crtc *crtc; |
5383 | enum pipe pipe; | |
5384 | ||
9da7d693 | 5385 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5386 | return; |
5387 | ||
88f933a8 | 5388 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5389 | |
a93fad0f | 5390 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5391 | if (!dev_priv->drrs.dp) { |
5392 | mutex_unlock(&dev_priv->drrs.mutex); | |
5393 | return; | |
5394 | } | |
5395 | ||
a93fad0f VK |
5396 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5397 | pipe = to_intel_crtc(crtc)->pipe; | |
c1d038c6 DV |
5398 | |
5399 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
a93fad0f VK |
5400 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; |
5401 | ||
0ddfd203 | 5402 | /* flush means busy screen hence upclock */ |
c1d038c6 | 5403 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
85cb48a1 ML |
5404 | intel_dp_set_drrs_state(dev_priv, to_intel_crtc(crtc)->config, |
5405 | dev_priv->drrs.dp->attached_connector->panel.fixed_mode->vrefresh); | |
0ddfd203 R |
5406 | |
5407 | /* | |
5408 | * flush also means no more activity hence schedule downclock, if all | |
5409 | * other fbs are quiescent too | |
5410 | */ | |
5411 | if (!dev_priv->drrs.busy_frontbuffer_bits) | |
a93fad0f VK |
5412 | schedule_delayed_work(&dev_priv->drrs.work, |
5413 | msecs_to_jiffies(1000)); | |
5414 | mutex_unlock(&dev_priv->drrs.mutex); | |
5415 | } | |
5416 | ||
b33a2815 VK |
5417 | /** |
5418 | * DOC: Display Refresh Rate Switching (DRRS) | |
5419 | * | |
5420 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5421 | * which enables swtching between low and high refresh rates, | |
5422 | * dynamically, based on the usage scenario. This feature is applicable | |
5423 | * for internal panels. | |
5424 | * | |
5425 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5426 | * would list multiple refresh rates for one resolution. | |
5427 | * | |
5428 | * DRRS is of 2 types - static and seamless. | |
5429 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5430 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5431 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5432 | * and can be used during normal system usage. This is done by programming | |
5433 | * certain registers. | |
5434 | * | |
5435 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5436 | * inputs from the panel spec. | |
5437 | * | |
5438 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5439 | * | |
2e7a5701 DV |
5440 | * The implementation is based on frontbuffer tracking implementation. When |
5441 | * there is a disturbance on the screen triggered by user activity or a periodic | |
5442 | * system activity, DRRS is disabled (RR is changed to high RR). When there is | |
5443 | * no movement on screen, after a timeout of 1 second, a switch to low RR is | |
5444 | * made. | |
5445 | * | |
5446 | * For integration with frontbuffer tracking code, intel_edp_drrs_invalidate() | |
5447 | * and intel_edp_drrs_flush() are called. | |
b33a2815 VK |
5448 | * |
5449 | * DRRS can be further extended to support other internal panels and also | |
5450 | * the scenario of video playback wherein RR is set based on the rate | |
5451 | * requested by userspace. | |
5452 | */ | |
5453 | ||
5454 | /** | |
5455 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5456 | * @intel_connector: eDP connector | |
5457 | * @fixed_mode: preferred mode of panel | |
5458 | * | |
5459 | * This function is called only once at driver load to initialize basic | |
5460 | * DRRS stuff. | |
5461 | * | |
5462 | * Returns: | |
5463 | * Downclock mode if panel supports it, else return NULL. | |
5464 | * DRRS support is determined by the presence of downclock mode (apart | |
5465 | * from VBT setting). | |
5466 | */ | |
4f9db5b5 | 5467 | static struct drm_display_mode * |
96178eeb VK |
5468 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5469 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5470 | { |
5471 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5472 | struct drm_device *dev = connector->dev; |
fac5e23e | 5473 | struct drm_i915_private *dev_priv = to_i915(dev); |
4f9db5b5 PB |
5474 | struct drm_display_mode *downclock_mode = NULL; |
5475 | ||
9da7d693 DV |
5476 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5477 | mutex_init(&dev_priv->drrs.mutex); | |
5478 | ||
dd11bc10 | 5479 | if (INTEL_GEN(dev_priv) <= 6) { |
4f9db5b5 PB |
5480 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); |
5481 | return NULL; | |
5482 | } | |
5483 | ||
5484 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5485 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5486 | return NULL; |
5487 | } | |
5488 | ||
5489 | downclock_mode = intel_find_panel_downclock | |
5490 | (dev, fixed_mode, connector); | |
5491 | ||
5492 | if (!downclock_mode) { | |
a1d26342 | 5493 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5494 | return NULL; |
5495 | } | |
5496 | ||
96178eeb | 5497 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5498 | |
96178eeb | 5499 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5500 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5501 | return downclock_mode; |
5502 | } | |
5503 | ||
ed92f0b2 | 5504 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5505 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5506 | { |
5507 | struct drm_connector *connector = &intel_connector->base; | |
5508 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5509 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5510 | struct drm_device *dev = intel_encoder->base.dev; | |
fac5e23e | 5511 | struct drm_i915_private *dev_priv = to_i915(dev); |
ed92f0b2 | 5512 | struct drm_display_mode *fixed_mode = NULL; |
4f9db5b5 | 5513 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5514 | bool has_dpcd; |
5515 | struct drm_display_mode *scan; | |
5516 | struct edid *edid; | |
6517d273 | 5517 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 PZ |
5518 | |
5519 | if (!is_edp(intel_dp)) | |
5520 | return true; | |
5521 | ||
97a824e1 ID |
5522 | /* |
5523 | * On IBX/CPT we may get here with LVDS already registered. Since the | |
5524 | * driver uses the only internal power sequencer available for both | |
5525 | * eDP and LVDS bail out early in this case to prevent interfering | |
5526 | * with an already powered-on LVDS power sequencer. | |
5527 | */ | |
5528 | if (intel_get_lvds_encoder(dev)) { | |
5529 | WARN_ON(!(HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))); | |
5530 | DRM_INFO("LVDS was detected, not registering eDP\n"); | |
5531 | ||
5532 | return false; | |
5533 | } | |
5534 | ||
49e6bc51 | 5535 | pps_lock(intel_dp); |
b4d06ede ID |
5536 | |
5537 | intel_dp_init_panel_power_timestamps(intel_dp); | |
335f752b | 5538 | intel_dp_pps_init(dev, intel_dp); |
49e6bc51 | 5539 | intel_edp_panel_vdd_sanitize(intel_dp); |
b4d06ede | 5540 | |
49e6bc51 | 5541 | pps_unlock(intel_dp); |
63635217 | 5542 | |
ed92f0b2 | 5543 | /* Cache DPCD and EDID for edp. */ |
fe5a66f9 | 5544 | has_dpcd = intel_edp_init_dpcd(intel_dp); |
ed92f0b2 | 5545 | |
fe5a66f9 | 5546 | if (!has_dpcd) { |
ed92f0b2 PZ |
5547 | /* if this fails, presume the device is a ghost */ |
5548 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
b4d06ede | 5549 | goto out_vdd_off; |
ed92f0b2 PZ |
5550 | } |
5551 | ||
060c8778 | 5552 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5553 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5554 | if (edid) { |
5555 | if (drm_add_edid_modes(connector, edid)) { | |
5556 | drm_mode_connector_update_edid_property(connector, | |
5557 | edid); | |
5558 | drm_edid_to_eld(connector, edid); | |
5559 | } else { | |
5560 | kfree(edid); | |
5561 | edid = ERR_PTR(-EINVAL); | |
5562 | } | |
5563 | } else { | |
5564 | edid = ERR_PTR(-ENOENT); | |
5565 | } | |
5566 | intel_connector->edid = edid; | |
5567 | ||
5568 | /* prefer fixed mode from EDID if available */ | |
5569 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5570 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5571 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5572 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5573 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5574 | break; |
5575 | } | |
5576 | } | |
5577 | ||
5578 | /* fallback to VBT if available for eDP */ | |
5579 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5580 | fixed_mode = drm_mode_duplicate(dev, | |
5581 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
df457245 | 5582 | if (fixed_mode) { |
ed92f0b2 | 5583 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; |
df457245 VS |
5584 | connector->display_info.width_mm = fixed_mode->width_mm; |
5585 | connector->display_info.height_mm = fixed_mode->height_mm; | |
5586 | } | |
ed92f0b2 | 5587 | } |
060c8778 | 5588 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5589 | |
920a14b2 | 5590 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
01527b31 CT |
5591 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; |
5592 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5593 | |
5594 | /* | |
5595 | * Figure out the current pipe for the initial backlight setup. | |
5596 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5597 | * fails just assume pipe A. | |
5598 | */ | |
920a14b2 | 5599 | if (IS_CHERRYVIEW(dev_priv)) |
6517d273 VS |
5600 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); |
5601 | else | |
5602 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5603 | ||
5604 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5605 | pipe = intel_dp->pps_pipe; | |
5606 | ||
5607 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5608 | pipe = PIPE_A; | |
5609 | ||
5610 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5611 | pipe_name(pipe)); | |
01527b31 CT |
5612 | } |
5613 | ||
4f9db5b5 | 5614 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
5507faeb | 5615 | intel_connector->panel.backlight.power = intel_edp_backlight_power; |
6517d273 | 5616 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5617 | |
5618 | return true; | |
b4d06ede ID |
5619 | |
5620 | out_vdd_off: | |
5621 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
5622 | /* | |
5623 | * vdd might still be enabled do to the delayed vdd off. | |
5624 | * Make sure vdd is actually turned off here. | |
5625 | */ | |
5626 | pps_lock(intel_dp); | |
5627 | edp_panel_vdd_off_sync(intel_dp); | |
5628 | pps_unlock(intel_dp); | |
5629 | ||
5630 | return false; | |
ed92f0b2 PZ |
5631 | } |
5632 | ||
16c25533 | 5633 | bool |
f0fec3f2 PZ |
5634 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5635 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5636 | { |
f0fec3f2 PZ |
5637 | struct drm_connector *connector = &intel_connector->base; |
5638 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5639 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5640 | struct drm_device *dev = intel_encoder->base.dev; | |
fac5e23e | 5641 | struct drm_i915_private *dev_priv = to_i915(dev); |
174edf1f | 5642 | enum port port = intel_dig_port->port; |
7a418e34 | 5643 | int type; |
a4fc5ed6 | 5644 | |
ccb1a831 VS |
5645 | if (WARN(intel_dig_port->max_lanes < 1, |
5646 | "Not enough lanes (%d) for DP on port %c\n", | |
5647 | intel_dig_port->max_lanes, port_name(port))) | |
5648 | return false; | |
5649 | ||
a4a5d2f8 VS |
5650 | intel_dp->pps_pipe = INVALID_PIPE; |
5651 | ||
ec5b01dd | 5652 | /* intel_dp vfuncs */ |
dd11bc10 | 5653 | if (INTEL_GEN(dev_priv) >= 9) |
b6b5e383 | 5654 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; |
8652744b | 5655 | else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) |
ec5b01dd | 5656 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; |
6e266956 | 5657 | else if (HAS_PCH_SPLIT(dev_priv)) |
ec5b01dd DL |
5658 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; |
5659 | else | |
6ffb1be7 | 5660 | intel_dp->get_aux_clock_divider = g4x_get_aux_clock_divider; |
ec5b01dd | 5661 | |
dd11bc10 | 5662 | if (INTEL_GEN(dev_priv) >= 9) |
b9ca5fad DL |
5663 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; |
5664 | else | |
6ffb1be7 | 5665 | intel_dp->get_aux_send_ctl = g4x_get_aux_send_ctl; |
153b1100 | 5666 | |
4f8036a2 | 5667 | if (HAS_DDI(dev_priv)) |
ad64217b ACO |
5668 | intel_dp->prepare_link_retrain = intel_ddi_prepare_link_retrain; |
5669 | ||
0767935e DV |
5670 | /* Preserve the current hw state. */ |
5671 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5672 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5673 | |
dd11bc10 | 5674 | if (intel_dp_is_edp(dev_priv, port)) |
b329530c | 5675 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5676 | else |
5677 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5678 | |
f7d24902 ID |
5679 | /* |
5680 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5681 | * for DP the encoder type can be set by the caller to | |
5682 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5683 | */ | |
5684 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5685 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5686 | ||
c17ed5b5 | 5687 | /* eDP only on port B and/or C on vlv/chv */ |
920a14b2 | 5688 | if (WARN_ON((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) && |
666a4537 | 5689 | is_edp(intel_dp) && port != PORT_B && port != PORT_C)) |
c17ed5b5 VS |
5690 | return false; |
5691 | ||
e7281eab ID |
5692 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5693 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5694 | port_name(port)); | |
5695 | ||
b329530c | 5696 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5697 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5698 | ||
a4fc5ed6 KP |
5699 | connector->interlace_allowed = true; |
5700 | connector->doublescan_allowed = 0; | |
5701 | ||
b6339585 | 5702 | intel_dp_aux_init(intel_dp); |
7a418e34 | 5703 | |
f0fec3f2 | 5704 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5705 | edp_panel_vdd_work); |
a4fc5ed6 | 5706 | |
df0e9248 | 5707 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 | 5708 | |
4f8036a2 | 5709 | if (HAS_DDI(dev_priv)) |
bcbc889b PZ |
5710 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5711 | else | |
5712 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
5713 | ||
0b99836f | 5714 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5715 | switch (port) { |
5716 | case PORT_A: | |
1d843f9d | 5717 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5718 | break; |
5719 | case PORT_B: | |
1d843f9d | 5720 | intel_encoder->hpd_pin = HPD_PORT_B; |
e2d214ae | 5721 | if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) |
cf1d5883 | 5722 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5723 | break; |
5724 | case PORT_C: | |
1d843f9d | 5725 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5726 | break; |
5727 | case PORT_D: | |
1d843f9d | 5728 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 | 5729 | break; |
26951caf XZ |
5730 | case PORT_E: |
5731 | intel_encoder->hpd_pin = HPD_PORT_E; | |
5732 | break; | |
ab9d7c30 | 5733 | default: |
ad1c0b19 | 5734 | BUG(); |
5eb08b69 ZW |
5735 | } |
5736 | ||
0e32b39c | 5737 | /* init MST on ports that can support it */ |
56b857a5 | 5738 | if (HAS_DP_MST(dev_priv) && !is_edp(intel_dp) && |
0c9b3715 JN |
5739 | (port == PORT_B || port == PORT_C || port == PORT_D)) |
5740 | intel_dp_mst_encoder_init(intel_dig_port, | |
5741 | intel_connector->base.base.id); | |
0e32b39c | 5742 | |
36b5f425 | 5743 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
a121f4e5 VS |
5744 | intel_dp_aux_fini(intel_dp); |
5745 | intel_dp_mst_encoder_cleanup(intel_dig_port); | |
5746 | goto fail; | |
b2f246a8 | 5747 | } |
32f9d658 | 5748 | |
f684960e CW |
5749 | intel_dp_add_properties(intel_dp, connector); |
5750 | ||
a4fc5ed6 KP |
5751 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5752 | * 0xd. Failure to do so will result in spurious interrupts being | |
5753 | * generated on the port when a cable is not attached. | |
5754 | */ | |
50a0bc90 | 5755 | if (IS_G4X(dev_priv) && !IS_GM45(dev_priv)) { |
a4fc5ed6 KP |
5756 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); |
5757 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5758 | } | |
16c25533 PZ |
5759 | |
5760 | return true; | |
a121f4e5 VS |
5761 | |
5762 | fail: | |
a121f4e5 VS |
5763 | drm_connector_cleanup(connector); |
5764 | ||
5765 | return false; | |
a4fc5ed6 | 5766 | } |
f0fec3f2 | 5767 | |
457c52d8 CW |
5768 | bool intel_dp_init(struct drm_device *dev, |
5769 | i915_reg_t output_reg, | |
5770 | enum port port) | |
f0fec3f2 | 5771 | { |
fac5e23e | 5772 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0fec3f2 PZ |
5773 | struct intel_digital_port *intel_dig_port; |
5774 | struct intel_encoder *intel_encoder; | |
5775 | struct drm_encoder *encoder; | |
5776 | struct intel_connector *intel_connector; | |
5777 | ||
b14c5679 | 5778 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 | 5779 | if (!intel_dig_port) |
457c52d8 | 5780 | return false; |
f0fec3f2 | 5781 | |
08d9bc92 | 5782 | intel_connector = intel_connector_alloc(); |
11aee0f6 SM |
5783 | if (!intel_connector) |
5784 | goto err_connector_alloc; | |
f0fec3f2 PZ |
5785 | |
5786 | intel_encoder = &intel_dig_port->base; | |
5787 | encoder = &intel_encoder->base; | |
5788 | ||
893da0c9 | 5789 | if (drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, |
580d8ed5 | 5790 | DRM_MODE_ENCODER_TMDS, "DP %c", port_name(port))) |
893da0c9 | 5791 | goto err_encoder_init; |
f0fec3f2 | 5792 | |
5bfe2ac0 | 5793 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5794 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5795 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5796 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5797 | intel_encoder->suspend = intel_dp_encoder_suspend; |
920a14b2 | 5798 | if (IS_CHERRYVIEW(dev_priv)) { |
9197c88b | 5799 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5800 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5801 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5802 | intel_encoder->post_disable = chv_post_disable_dp; |
d6db995f | 5803 | intel_encoder->post_pll_disable = chv_dp_post_pll_disable; |
11a914c2 | 5804 | } else if (IS_VALLEYVIEW(dev_priv)) { |
ecff4f3b | 5805 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5806 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5807 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5808 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5809 | } else { |
ecff4f3b JN |
5810 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5811 | intel_encoder->enable = g4x_enable_dp; | |
dd11bc10 | 5812 | if (INTEL_GEN(dev_priv) >= 5) |
08aff3fe | 5813 | intel_encoder->post_disable = ilk_post_disable_dp; |
ab1f90f9 | 5814 | } |
f0fec3f2 | 5815 | |
174edf1f | 5816 | intel_dig_port->port = port; |
f0fec3f2 | 5817 | intel_dig_port->dp.output_reg = output_reg; |
ccb1a831 | 5818 | intel_dig_port->max_lanes = 4; |
f0fec3f2 | 5819 | |
cca0502b | 5820 | intel_encoder->type = INTEL_OUTPUT_DP; |
920a14b2 | 5821 | if (IS_CHERRYVIEW(dev_priv)) { |
882ec384 VS |
5822 | if (port == PORT_D) |
5823 | intel_encoder->crtc_mask = 1 << 2; | |
5824 | else | |
5825 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5826 | } else { | |
5827 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5828 | } | |
bc079e8b | 5829 | intel_encoder->cloneable = 0; |
03cdc1d4 | 5830 | intel_encoder->port = port; |
f0fec3f2 | 5831 | |
13cf5504 | 5832 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5fcece80 | 5833 | dev_priv->hotplug.irq_port[port] = intel_dig_port; |
13cf5504 | 5834 | |
11aee0f6 SM |
5835 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) |
5836 | goto err_init_connector; | |
5837 | ||
457c52d8 | 5838 | return true; |
11aee0f6 SM |
5839 | |
5840 | err_init_connector: | |
5841 | drm_encoder_cleanup(encoder); | |
893da0c9 | 5842 | err_encoder_init: |
11aee0f6 SM |
5843 | kfree(intel_connector); |
5844 | err_connector_alloc: | |
5845 | kfree(intel_dig_port); | |
457c52d8 | 5846 | return false; |
f0fec3f2 | 5847 | } |
0e32b39c DA |
5848 | |
5849 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5850 | { | |
fac5e23e | 5851 | struct drm_i915_private *dev_priv = to_i915(dev); |
0e32b39c DA |
5852 | int i; |
5853 | ||
5854 | /* disable MST */ | |
5855 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 5856 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
5aa56969 VS |
5857 | |
5858 | if (!intel_dig_port || !intel_dig_port->dp.can_mst) | |
0e32b39c DA |
5859 | continue; |
5860 | ||
5aa56969 VS |
5861 | if (intel_dig_port->dp.is_mst) |
5862 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
0e32b39c DA |
5863 | } |
5864 | } | |
5865 | ||
5866 | void intel_dp_mst_resume(struct drm_device *dev) | |
5867 | { | |
fac5e23e | 5868 | struct drm_i915_private *dev_priv = to_i915(dev); |
0e32b39c DA |
5869 | int i; |
5870 | ||
5871 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 5872 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
5aa56969 | 5873 | int ret; |
0e32b39c | 5874 | |
5aa56969 VS |
5875 | if (!intel_dig_port || !intel_dig_port->dp.can_mst) |
5876 | continue; | |
0e32b39c | 5877 | |
5aa56969 VS |
5878 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); |
5879 | if (ret) | |
5880 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
0e32b39c DA |
5881 | } |
5882 | } |