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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 | ||
c19de8eb | 216 | static enum drm_mode_status |
a4fc5ed6 KP |
217 | intel_dp_mode_valid(struct drm_connector *connector, |
218 | struct drm_display_mode *mode) | |
219 | { | |
df0e9248 | 220 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
221 | struct intel_connector *intel_connector = to_intel_connector(connector); |
222 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
223 | int target_clock = mode->clock; |
224 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
70ec0645 MK |
225 | int max_dotclk; |
226 | ||
227 | max_dotclk = intel_dp_downstream_max_dotclock(intel_dp); | |
a4fc5ed6 | 228 | |
dd06f90e JN |
229 | if (is_edp(intel_dp) && fixed_mode) { |
230 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
231 | return MODE_PANEL; |
232 | ||
dd06f90e | 233 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 234 | return MODE_PANEL; |
03afc4a2 DV |
235 | |
236 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
237 | } |
238 | ||
50fec21a | 239 | max_link_clock = intel_dp_max_link_rate(intel_dp); |
eeb6324d | 240 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
241 | |
242 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
243 | mode_rate = intel_dp_link_required(target_clock, 18); | |
244 | ||
799487f5 | 245 | if (mode_rate > max_rate || target_clock > max_dotclk) |
c4867936 | 246 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
247 | |
248 | if (mode->clock < 10000) | |
249 | return MODE_CLOCK_LOW; | |
250 | ||
0af78a2b DV |
251 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
252 | return MODE_H_ILLEGAL; | |
253 | ||
a4fc5ed6 KP |
254 | return MODE_OK; |
255 | } | |
256 | ||
a4f1289e | 257 | uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes) |
a4fc5ed6 KP |
258 | { |
259 | int i; | |
260 | uint32_t v = 0; | |
261 | ||
262 | if (src_bytes > 4) | |
263 | src_bytes = 4; | |
264 | for (i = 0; i < src_bytes; i++) | |
265 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
266 | return v; | |
267 | } | |
268 | ||
c2af70e2 | 269 | static void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) |
a4fc5ed6 KP |
270 | { |
271 | int i; | |
272 | if (dst_bytes > 4) | |
273 | dst_bytes = 4; | |
274 | for (i = 0; i < dst_bytes; i++) | |
275 | dst[i] = src >> ((3-i) * 8); | |
276 | } | |
277 | ||
bf13e81b JN |
278 | static void |
279 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
36b5f425 | 280 | struct intel_dp *intel_dp); |
bf13e81b JN |
281 | static void |
282 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 283 | struct intel_dp *intel_dp); |
335f752b ID |
284 | static void |
285 | intel_dp_pps_init(struct drm_device *dev, struct intel_dp *intel_dp); | |
bf13e81b | 286 | |
773538e8 VS |
287 | static void pps_lock(struct intel_dp *intel_dp) |
288 | { | |
289 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
290 | struct intel_encoder *encoder = &intel_dig_port->base; | |
291 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 292 | struct drm_i915_private *dev_priv = to_i915(dev); |
773538e8 VS |
293 | enum intel_display_power_domain power_domain; |
294 | ||
295 | /* | |
296 | * See vlv_power_sequencer_reset() why we need | |
297 | * a power domain reference here. | |
298 | */ | |
25f78f58 | 299 | power_domain = intel_display_port_aux_power_domain(encoder); |
773538e8 VS |
300 | intel_display_power_get(dev_priv, power_domain); |
301 | ||
302 | mutex_lock(&dev_priv->pps_mutex); | |
303 | } | |
304 | ||
305 | static void pps_unlock(struct intel_dp *intel_dp) | |
306 | { | |
307 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
308 | struct intel_encoder *encoder = &intel_dig_port->base; | |
309 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 310 | struct drm_i915_private *dev_priv = to_i915(dev); |
773538e8 VS |
311 | enum intel_display_power_domain power_domain; |
312 | ||
313 | mutex_unlock(&dev_priv->pps_mutex); | |
314 | ||
25f78f58 | 315 | power_domain = intel_display_port_aux_power_domain(encoder); |
773538e8 VS |
316 | intel_display_power_put(dev_priv, power_domain); |
317 | } | |
318 | ||
961a0db0 VS |
319 | static void |
320 | vlv_power_sequencer_kick(struct intel_dp *intel_dp) | |
321 | { | |
322 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
323 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 324 | struct drm_i915_private *dev_priv = to_i915(dev); |
961a0db0 | 325 | enum pipe pipe = intel_dp->pps_pipe; |
0047eedc VS |
326 | bool pll_enabled, release_cl_override = false; |
327 | enum dpio_phy phy = DPIO_PHY(pipe); | |
328 | enum dpio_channel ch = vlv_pipe_to_channel(pipe); | |
961a0db0 VS |
329 | uint32_t DP; |
330 | ||
331 | if (WARN(I915_READ(intel_dp->output_reg) & DP_PORT_EN, | |
332 | "skipping pipe %c power seqeuncer kick due to port %c being active\n", | |
333 | pipe_name(pipe), port_name(intel_dig_port->port))) | |
334 | return; | |
335 | ||
336 | DRM_DEBUG_KMS("kicking pipe %c power sequencer for port %c\n", | |
337 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
338 | ||
339 | /* Preserve the BIOS-computed detected bit. This is | |
340 | * supposed to be read-only. | |
341 | */ | |
342 | DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
343 | DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
344 | DP |= DP_PORT_WIDTH(1); | |
345 | DP |= DP_LINK_TRAIN_PAT_1; | |
346 | ||
347 | if (IS_CHERRYVIEW(dev)) | |
348 | DP |= DP_PIPE_SELECT_CHV(pipe); | |
349 | else if (pipe == PIPE_B) | |
350 | DP |= DP_PIPEB_SELECT; | |
351 | ||
d288f65f VS |
352 | pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE; |
353 | ||
354 | /* | |
355 | * The DPLL for the pipe must be enabled for this to work. | |
356 | * So enable temporarily it if it's not already enabled. | |
357 | */ | |
0047eedc VS |
358 | if (!pll_enabled) { |
359 | release_cl_override = IS_CHERRYVIEW(dev) && | |
360 | !chv_phy_powergate_ch(dev_priv, phy, ch, true); | |
361 | ||
3f36b937 TU |
362 | if (vlv_force_pll_on(dev, pipe, IS_CHERRYVIEW(dev) ? |
363 | &chv_dpll[0].dpll : &vlv_dpll[0].dpll)) { | |
364 | DRM_ERROR("Failed to force on pll for pipe %c!\n", | |
365 | pipe_name(pipe)); | |
366 | return; | |
367 | } | |
0047eedc | 368 | } |
d288f65f | 369 | |
961a0db0 VS |
370 | /* |
371 | * Similar magic as in intel_dp_enable_port(). | |
372 | * We _must_ do this port enable + disable trick | |
373 | * to make this power seqeuencer lock onto the port. | |
374 | * Otherwise even VDD force bit won't work. | |
375 | */ | |
376 | I915_WRITE(intel_dp->output_reg, DP); | |
377 | POSTING_READ(intel_dp->output_reg); | |
378 | ||
379 | I915_WRITE(intel_dp->output_reg, DP | DP_PORT_EN); | |
380 | POSTING_READ(intel_dp->output_reg); | |
381 | ||
382 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
383 | POSTING_READ(intel_dp->output_reg); | |
d288f65f | 384 | |
0047eedc | 385 | if (!pll_enabled) { |
d288f65f | 386 | vlv_force_pll_off(dev, pipe); |
0047eedc VS |
387 | |
388 | if (release_cl_override) | |
389 | chv_phy_powergate_ch(dev_priv, phy, ch, false); | |
390 | } | |
961a0db0 VS |
391 | } |
392 | ||
bf13e81b JN |
393 | static enum pipe |
394 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
395 | { | |
396 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bf13e81b | 397 | struct drm_device *dev = intel_dig_port->base.base.dev; |
fac5e23e | 398 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 VS |
399 | struct intel_encoder *encoder; |
400 | unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); | |
a8c3344e | 401 | enum pipe pipe; |
bf13e81b | 402 | |
e39b999a | 403 | lockdep_assert_held(&dev_priv->pps_mutex); |
bf13e81b | 404 | |
a8c3344e VS |
405 | /* We should never land here with regular DP ports */ |
406 | WARN_ON(!is_edp(intel_dp)); | |
407 | ||
a4a5d2f8 VS |
408 | if (intel_dp->pps_pipe != INVALID_PIPE) |
409 | return intel_dp->pps_pipe; | |
410 | ||
411 | /* | |
412 | * We don't have power sequencer currently. | |
413 | * Pick one that's not used by other ports. | |
414 | */ | |
19c8054c | 415 | for_each_intel_encoder(dev, encoder) { |
a4a5d2f8 VS |
416 | struct intel_dp *tmp; |
417 | ||
418 | if (encoder->type != INTEL_OUTPUT_EDP) | |
419 | continue; | |
420 | ||
421 | tmp = enc_to_intel_dp(&encoder->base); | |
422 | ||
423 | if (tmp->pps_pipe != INVALID_PIPE) | |
424 | pipes &= ~(1 << tmp->pps_pipe); | |
425 | } | |
426 | ||
427 | /* | |
428 | * Didn't find one. This should not happen since there | |
429 | * are two power sequencers and up to two eDP ports. | |
430 | */ | |
431 | if (WARN_ON(pipes == 0)) | |
a8c3344e VS |
432 | pipe = PIPE_A; |
433 | else | |
434 | pipe = ffs(pipes) - 1; | |
a4a5d2f8 | 435 | |
a8c3344e VS |
436 | vlv_steal_power_sequencer(dev, pipe); |
437 | intel_dp->pps_pipe = pipe; | |
a4a5d2f8 VS |
438 | |
439 | DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", | |
440 | pipe_name(intel_dp->pps_pipe), | |
441 | port_name(intel_dig_port->port)); | |
442 | ||
443 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
444 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
445 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 | 446 | |
961a0db0 VS |
447 | /* |
448 | * Even vdd force doesn't work until we've made | |
449 | * the power sequencer lock in on the port. | |
450 | */ | |
451 | vlv_power_sequencer_kick(intel_dp); | |
a4a5d2f8 VS |
452 | |
453 | return intel_dp->pps_pipe; | |
454 | } | |
455 | ||
78597996 ID |
456 | static int |
457 | bxt_power_sequencer_idx(struct intel_dp *intel_dp) | |
458 | { | |
459 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
460 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 461 | struct drm_i915_private *dev_priv = to_i915(dev); |
78597996 ID |
462 | |
463 | lockdep_assert_held(&dev_priv->pps_mutex); | |
464 | ||
465 | /* We should never land here with regular DP ports */ | |
466 | WARN_ON(!is_edp(intel_dp)); | |
467 | ||
468 | /* | |
469 | * TODO: BXT has 2 PPS instances. The correct port->PPS instance | |
470 | * mapping needs to be retrieved from VBT, for now just hard-code to | |
471 | * use instance #0 always. | |
472 | */ | |
473 | if (!intel_dp->pps_reset) | |
474 | return 0; | |
475 | ||
476 | intel_dp->pps_reset = false; | |
477 | ||
478 | /* | |
479 | * Only the HW needs to be reprogrammed, the SW state is fixed and | |
480 | * has been setup during connector init. | |
481 | */ | |
482 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
6491ab27 VS |
487 | typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv, |
488 | enum pipe pipe); | |
489 | ||
490 | static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv, | |
491 | enum pipe pipe) | |
492 | { | |
44cb734c | 493 | return I915_READ(PP_STATUS(pipe)) & PP_ON; |
6491ab27 VS |
494 | } |
495 | ||
496 | static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv, | |
497 | enum pipe pipe) | |
498 | { | |
44cb734c | 499 | return I915_READ(PP_CONTROL(pipe)) & EDP_FORCE_VDD; |
6491ab27 VS |
500 | } |
501 | ||
502 | static bool vlv_pipe_any(struct drm_i915_private *dev_priv, | |
503 | enum pipe pipe) | |
504 | { | |
505 | return true; | |
506 | } | |
bf13e81b | 507 | |
a4a5d2f8 | 508 | static enum pipe |
6491ab27 VS |
509 | vlv_initial_pps_pipe(struct drm_i915_private *dev_priv, |
510 | enum port port, | |
511 | vlv_pipe_check pipe_check) | |
a4a5d2f8 VS |
512 | { |
513 | enum pipe pipe; | |
bf13e81b | 514 | |
bf13e81b | 515 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { |
44cb734c | 516 | u32 port_sel = I915_READ(PP_ON_DELAYS(pipe)) & |
bf13e81b | 517 | PANEL_PORT_SELECT_MASK; |
a4a5d2f8 VS |
518 | |
519 | if (port_sel != PANEL_PORT_SELECT_VLV(port)) | |
520 | continue; | |
521 | ||
6491ab27 VS |
522 | if (!pipe_check(dev_priv, pipe)) |
523 | continue; | |
524 | ||
a4a5d2f8 | 525 | return pipe; |
bf13e81b JN |
526 | } |
527 | ||
a4a5d2f8 VS |
528 | return INVALID_PIPE; |
529 | } | |
530 | ||
531 | static void | |
532 | vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp) | |
533 | { | |
534 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
535 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 536 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 VS |
537 | enum port port = intel_dig_port->port; |
538 | ||
539 | lockdep_assert_held(&dev_priv->pps_mutex); | |
540 | ||
541 | /* try to find a pipe with this port selected */ | |
6491ab27 VS |
542 | /* first pick one where the panel is on */ |
543 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
544 | vlv_pipe_has_pp_on); | |
545 | /* didn't find one? pick one where vdd is on */ | |
546 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
547 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
548 | vlv_pipe_has_vdd_on); | |
549 | /* didn't find one? pick one with just the correct port */ | |
550 | if (intel_dp->pps_pipe == INVALID_PIPE) | |
551 | intel_dp->pps_pipe = vlv_initial_pps_pipe(dev_priv, port, | |
552 | vlv_pipe_any); | |
a4a5d2f8 VS |
553 | |
554 | /* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */ | |
555 | if (intel_dp->pps_pipe == INVALID_PIPE) { | |
556 | DRM_DEBUG_KMS("no initial power sequencer for port %c\n", | |
557 | port_name(port)); | |
558 | return; | |
bf13e81b JN |
559 | } |
560 | ||
a4a5d2f8 VS |
561 | DRM_DEBUG_KMS("initial power sequencer for port %c: pipe %c\n", |
562 | port_name(port), pipe_name(intel_dp->pps_pipe)); | |
563 | ||
36b5f425 VS |
564 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
565 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
bf13e81b JN |
566 | } |
567 | ||
78597996 | 568 | void intel_power_sequencer_reset(struct drm_i915_private *dev_priv) |
773538e8 | 569 | { |
91c8a326 | 570 | struct drm_device *dev = &dev_priv->drm; |
773538e8 VS |
571 | struct intel_encoder *encoder; |
572 | ||
78597996 ID |
573 | if (WARN_ON(!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && |
574 | !IS_BROXTON(dev))) | |
773538e8 VS |
575 | return; |
576 | ||
577 | /* | |
578 | * We can't grab pps_mutex here due to deadlock with power_domain | |
579 | * mutex when power_domain functions are called while holding pps_mutex. | |
580 | * That also means that in order to use pps_pipe the code needs to | |
581 | * hold both a power domain reference and pps_mutex, and the power domain | |
582 | * reference get/put must be done while _not_ holding pps_mutex. | |
583 | * pps_{lock,unlock}() do these steps in the correct order, so one | |
584 | * should use them always. | |
585 | */ | |
586 | ||
19c8054c | 587 | for_each_intel_encoder(dev, encoder) { |
773538e8 VS |
588 | struct intel_dp *intel_dp; |
589 | ||
590 | if (encoder->type != INTEL_OUTPUT_EDP) | |
591 | continue; | |
592 | ||
593 | intel_dp = enc_to_intel_dp(&encoder->base); | |
78597996 ID |
594 | if (IS_BROXTON(dev)) |
595 | intel_dp->pps_reset = true; | |
596 | else | |
597 | intel_dp->pps_pipe = INVALID_PIPE; | |
773538e8 | 598 | } |
bf13e81b JN |
599 | } |
600 | ||
8e8232d5 ID |
601 | struct pps_registers { |
602 | i915_reg_t pp_ctrl; | |
603 | i915_reg_t pp_stat; | |
604 | i915_reg_t pp_on; | |
605 | i915_reg_t pp_off; | |
606 | i915_reg_t pp_div; | |
607 | }; | |
608 | ||
609 | static void intel_pps_get_registers(struct drm_i915_private *dev_priv, | |
610 | struct intel_dp *intel_dp, | |
611 | struct pps_registers *regs) | |
612 | { | |
44cb734c ID |
613 | int pps_idx = 0; |
614 | ||
8e8232d5 ID |
615 | memset(regs, 0, sizeof(*regs)); |
616 | ||
44cb734c ID |
617 | if (IS_BROXTON(dev_priv)) |
618 | pps_idx = bxt_power_sequencer_idx(intel_dp); | |
619 | else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) | |
620 | pps_idx = vlv_power_sequencer_pipe(intel_dp); | |
8e8232d5 | 621 | |
44cb734c ID |
622 | regs->pp_ctrl = PP_CONTROL(pps_idx); |
623 | regs->pp_stat = PP_STATUS(pps_idx); | |
624 | regs->pp_on = PP_ON_DELAYS(pps_idx); | |
625 | regs->pp_off = PP_OFF_DELAYS(pps_idx); | |
626 | if (!IS_BROXTON(dev_priv)) | |
627 | regs->pp_div = PP_DIVISOR(pps_idx); | |
8e8232d5 ID |
628 | } |
629 | ||
f0f59a00 VS |
630 | static i915_reg_t |
631 | _pp_ctrl_reg(struct intel_dp *intel_dp) | |
bf13e81b | 632 | { |
8e8232d5 | 633 | struct pps_registers regs; |
bf13e81b | 634 | |
8e8232d5 ID |
635 | intel_pps_get_registers(to_i915(intel_dp_to_dev(intel_dp)), intel_dp, |
636 | ®s); | |
637 | ||
638 | return regs.pp_ctrl; | |
bf13e81b JN |
639 | } |
640 | ||
f0f59a00 VS |
641 | static i915_reg_t |
642 | _pp_stat_reg(struct intel_dp *intel_dp) | |
bf13e81b | 643 | { |
8e8232d5 | 644 | struct pps_registers regs; |
bf13e81b | 645 | |
8e8232d5 ID |
646 | intel_pps_get_registers(to_i915(intel_dp_to_dev(intel_dp)), intel_dp, |
647 | ®s); | |
648 | ||
649 | return regs.pp_stat; | |
bf13e81b JN |
650 | } |
651 | ||
01527b31 CT |
652 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
653 | This function only applicable when panel PM state is not to be tracked */ | |
654 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
655 | void *unused) | |
656 | { | |
657 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
658 | edp_notifier); | |
659 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 660 | struct drm_i915_private *dev_priv = to_i915(dev); |
01527b31 CT |
661 | |
662 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
663 | return 0; | |
664 | ||
773538e8 | 665 | pps_lock(intel_dp); |
e39b999a | 666 | |
666a4537 | 667 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
e39b999a | 668 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
f0f59a00 | 669 | i915_reg_t pp_ctrl_reg, pp_div_reg; |
649636ef | 670 | u32 pp_div; |
e39b999a | 671 | |
44cb734c ID |
672 | pp_ctrl_reg = PP_CONTROL(pipe); |
673 | pp_div_reg = PP_DIVISOR(pipe); | |
01527b31 CT |
674 | pp_div = I915_READ(pp_div_reg); |
675 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
676 | ||
677 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
678 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
679 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
680 | msleep(intel_dp->panel_power_cycle_delay); | |
681 | } | |
682 | ||
773538e8 | 683 | pps_unlock(intel_dp); |
e39b999a | 684 | |
01527b31 CT |
685 | return 0; |
686 | } | |
687 | ||
4be73780 | 688 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 689 | { |
30add22d | 690 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 691 | struct drm_i915_private *dev_priv = to_i915(dev); |
ebf33b18 | 692 | |
e39b999a VS |
693 | lockdep_assert_held(&dev_priv->pps_mutex); |
694 | ||
666a4537 | 695 | if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) && |
9a42356b VS |
696 | intel_dp->pps_pipe == INVALID_PIPE) |
697 | return false; | |
698 | ||
bf13e81b | 699 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
700 | } |
701 | ||
4be73780 | 702 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 703 | { |
30add22d | 704 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 705 | struct drm_i915_private *dev_priv = to_i915(dev); |
ebf33b18 | 706 | |
e39b999a VS |
707 | lockdep_assert_held(&dev_priv->pps_mutex); |
708 | ||
666a4537 | 709 | if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) && |
9a42356b VS |
710 | intel_dp->pps_pipe == INVALID_PIPE) |
711 | return false; | |
712 | ||
773538e8 | 713 | return I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD; |
ebf33b18 KP |
714 | } |
715 | ||
9b984dae KP |
716 | static void |
717 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
718 | { | |
30add22d | 719 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 720 | struct drm_i915_private *dev_priv = to_i915(dev); |
ebf33b18 | 721 | |
9b984dae KP |
722 | if (!is_edp(intel_dp)) |
723 | return; | |
453c5420 | 724 | |
4be73780 | 725 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
726 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
727 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
728 | I915_READ(_pp_stat_reg(intel_dp)), |
729 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
730 | } |
731 | } | |
732 | ||
9ee32fea DV |
733 | static uint32_t |
734 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
735 | { | |
736 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
737 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 738 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0f59a00 | 739 | i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
740 | uint32_t status; |
741 | bool done; | |
742 | ||
ef04f00d | 743 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 744 | if (has_aux_irq) |
b18ac466 | 745 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 746 | msecs_to_jiffies_timeout(10)); |
9ee32fea | 747 | else |
713a6b66 | 748 | done = wait_for(C, 10) == 0; |
9ee32fea DV |
749 | if (!done) |
750 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
751 | has_aux_irq); | |
752 | #undef C | |
753 | ||
754 | return status; | |
755 | } | |
756 | ||
6ffb1be7 | 757 | static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 758 | { |
174edf1f | 759 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
e7dc33f3 | 760 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
9ee32fea | 761 | |
a457f54b VS |
762 | if (index) |
763 | return 0; | |
764 | ||
ec5b01dd DL |
765 | /* |
766 | * The clock divider is based off the hrawclk, and would like to run at | |
a457f54b | 767 | * 2MHz. So, take the hrawclk value and divide by 2000 and use that |
a4fc5ed6 | 768 | */ |
a457f54b | 769 | return DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 2000); |
ec5b01dd DL |
770 | } |
771 | ||
772 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
773 | { | |
774 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
a457f54b | 775 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
ec5b01dd DL |
776 | |
777 | if (index) | |
778 | return 0; | |
779 | ||
a457f54b VS |
780 | /* |
781 | * The clock divider is based off the cdclk or PCH rawclk, and would | |
782 | * like to run at 2MHz. So, take the cdclk or PCH rawclk value and | |
783 | * divide by 2000 and use that | |
784 | */ | |
e7dc33f3 | 785 | if (intel_dig_port->port == PORT_A) |
fce18c4c | 786 | return DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 2000); |
e7dc33f3 VS |
787 | else |
788 | return DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 2000); | |
ec5b01dd DL |
789 | } |
790 | ||
791 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
792 | { | |
793 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
a457f54b | 794 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
ec5b01dd | 795 | |
a457f54b | 796 | if (intel_dig_port->port != PORT_A && HAS_PCH_LPT_H(dev_priv)) { |
2c55c336 | 797 | /* Workaround for non-ULT HSW */ |
bc86625a CW |
798 | switch (index) { |
799 | case 0: return 63; | |
800 | case 1: return 72; | |
801 | default: return 0; | |
802 | } | |
2c55c336 | 803 | } |
a457f54b VS |
804 | |
805 | return ilk_get_aux_clock_divider(intel_dp, index); | |
b84a1cf8 RV |
806 | } |
807 | ||
b6b5e383 DL |
808 | static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
809 | { | |
810 | /* | |
811 | * SKL doesn't need us to program the AUX clock divider (Hardware will | |
812 | * derive the clock from CDCLK automatically). We still implement the | |
813 | * get_aux_clock_divider vfunc to plug-in into the existing code. | |
814 | */ | |
815 | return index ? 0 : 1; | |
816 | } | |
817 | ||
6ffb1be7 VS |
818 | static uint32_t g4x_get_aux_send_ctl(struct intel_dp *intel_dp, |
819 | bool has_aux_irq, | |
820 | int send_bytes, | |
821 | uint32_t aux_clock_divider) | |
5ed12a19 DL |
822 | { |
823 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
824 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
825 | uint32_t precharge, timeout; | |
826 | ||
827 | if (IS_GEN6(dev)) | |
828 | precharge = 3; | |
829 | else | |
830 | precharge = 5; | |
831 | ||
f3c6a3a7 | 832 | if (IS_BROADWELL(dev) && intel_dig_port->port == PORT_A) |
5ed12a19 DL |
833 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; |
834 | else | |
835 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
836 | ||
837 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 838 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 839 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 840 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 841 | timeout | |
788d4433 | 842 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
843 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
844 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 845 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
846 | } |
847 | ||
b9ca5fad DL |
848 | static uint32_t skl_get_aux_send_ctl(struct intel_dp *intel_dp, |
849 | bool has_aux_irq, | |
850 | int send_bytes, | |
851 | uint32_t unused) | |
852 | { | |
853 | return DP_AUX_CH_CTL_SEND_BUSY | | |
854 | DP_AUX_CH_CTL_DONE | | |
855 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
856 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
857 | DP_AUX_CH_CTL_TIME_OUT_1600us | | |
858 | DP_AUX_CH_CTL_RECEIVE_ERROR | | |
859 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
d4dcbdce | 860 | DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) | |
b9ca5fad DL |
861 | DP_AUX_CH_CTL_SYNC_PULSE_SKL(32); |
862 | } | |
863 | ||
b84a1cf8 RV |
864 | static int |
865 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
bd9f74a5 | 866 | const uint8_t *send, int send_bytes, |
b84a1cf8 RV |
867 | uint8_t *recv, int recv_size) |
868 | { | |
869 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
870 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 871 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0f59a00 | 872 | i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
bc86625a | 873 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
874 | int i, ret, recv_bytes; |
875 | uint32_t status; | |
5ed12a19 | 876 | int try, clock = 0; |
4e6b788c | 877 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
878 | bool vdd; |
879 | ||
773538e8 | 880 | pps_lock(intel_dp); |
e39b999a | 881 | |
72c3500a VS |
882 | /* |
883 | * We will be called with VDD already enabled for dpcd/edid/oui reads. | |
884 | * In such cases we want to leave VDD enabled and it's up to upper layers | |
885 | * to turn it off. But for eg. i2c-dev access we need to turn it on/off | |
886 | * ourselves. | |
887 | */ | |
1e0560e0 | 888 | vdd = edp_panel_vdd_on(intel_dp); |
b84a1cf8 RV |
889 | |
890 | /* dp aux is extremely sensitive to irq latency, hence request the | |
891 | * lowest possible wakeup latency and so prevent the cpu from going into | |
892 | * deep sleep states. | |
893 | */ | |
894 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
895 | ||
896 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 897 | |
11bee43e JB |
898 | /* Try to wait for any previous AUX channel activity */ |
899 | for (try = 0; try < 3; try++) { | |
ef04f00d | 900 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
901 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
902 | break; | |
903 | msleep(1); | |
904 | } | |
905 | ||
906 | if (try == 3) { | |
02196c77 MK |
907 | static u32 last_status = -1; |
908 | const u32 status = I915_READ(ch_ctl); | |
909 | ||
910 | if (status != last_status) { | |
911 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
912 | status); | |
913 | last_status = status; | |
914 | } | |
915 | ||
9ee32fea DV |
916 | ret = -EBUSY; |
917 | goto out; | |
4f7f7b7e CW |
918 | } |
919 | ||
46a5ae9f PZ |
920 | /* Only 5 data registers! */ |
921 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
922 | ret = -E2BIG; | |
923 | goto out; | |
924 | } | |
925 | ||
ec5b01dd | 926 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
927 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
928 | has_aux_irq, | |
929 | send_bytes, | |
930 | aux_clock_divider); | |
5ed12a19 | 931 | |
bc86625a CW |
932 | /* Must try at least 3 times according to DP spec */ |
933 | for (try = 0; try < 5; try++) { | |
934 | /* Load the send data into the aux channel data registers */ | |
935 | for (i = 0; i < send_bytes; i += 4) | |
330e20ec | 936 | I915_WRITE(intel_dp->aux_ch_data_reg[i >> 2], |
a4f1289e RV |
937 | intel_dp_pack_aux(send + i, |
938 | send_bytes - i)); | |
bc86625a CW |
939 | |
940 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 941 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
942 | |
943 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
944 | ||
945 | /* Clear done status and any errors */ | |
946 | I915_WRITE(ch_ctl, | |
947 | status | | |
948 | DP_AUX_CH_CTL_DONE | | |
949 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
950 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
951 | ||
74ebf294 | 952 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) |
bc86625a | 953 | continue; |
74ebf294 TP |
954 | |
955 | /* DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2 | |
956 | * 400us delay required for errors and timeouts | |
957 | * Timeout errors from the HW already meet this | |
958 | * requirement so skip to next iteration | |
959 | */ | |
960 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { | |
961 | usleep_range(400, 500); | |
bc86625a | 962 | continue; |
74ebf294 | 963 | } |
bc86625a | 964 | if (status & DP_AUX_CH_CTL_DONE) |
e058c945 | 965 | goto done; |
bc86625a | 966 | } |
a4fc5ed6 KP |
967 | } |
968 | ||
a4fc5ed6 | 969 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 970 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
971 | ret = -EBUSY; |
972 | goto out; | |
a4fc5ed6 KP |
973 | } |
974 | ||
e058c945 | 975 | done: |
a4fc5ed6 KP |
976 | /* Check for timeout or receive error. |
977 | * Timeouts occur when the sink is not connected | |
978 | */ | |
a5b3da54 | 979 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 980 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
981 | ret = -EIO; |
982 | goto out; | |
a5b3da54 | 983 | } |
1ae8c0a5 KP |
984 | |
985 | /* Timeouts occur when the device isn't connected, so they're | |
986 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 987 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 988 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
989 | ret = -ETIMEDOUT; |
990 | goto out; | |
a4fc5ed6 KP |
991 | } |
992 | ||
993 | /* Unload any bytes sent back from the other side */ | |
994 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
995 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
14e01889 RV |
996 | |
997 | /* | |
998 | * By BSpec: "Message sizes of 0 or >20 are not allowed." | |
999 | * We have no idea of what happened so we return -EBUSY so | |
1000 | * drm layer takes care for the necessary retries. | |
1001 | */ | |
1002 | if (recv_bytes == 0 || recv_bytes > 20) { | |
1003 | DRM_DEBUG_KMS("Forbidden recv_bytes = %d on aux transaction\n", | |
1004 | recv_bytes); | |
1005 | /* | |
1006 | * FIXME: This patch was created on top of a series that | |
1007 | * organize the retries at drm level. There EBUSY should | |
1008 | * also take care for 1ms wait before retrying. | |
1009 | * That aux retries re-org is still needed and after that is | |
1010 | * merged we remove this sleep from here. | |
1011 | */ | |
1012 | usleep_range(1000, 1500); | |
1013 | ret = -EBUSY; | |
1014 | goto out; | |
1015 | } | |
1016 | ||
a4fc5ed6 KP |
1017 | if (recv_bytes > recv_size) |
1018 | recv_bytes = recv_size; | |
0206e353 | 1019 | |
4f7f7b7e | 1020 | for (i = 0; i < recv_bytes; i += 4) |
330e20ec | 1021 | intel_dp_unpack_aux(I915_READ(intel_dp->aux_ch_data_reg[i >> 2]), |
a4f1289e | 1022 | recv + i, recv_bytes - i); |
a4fc5ed6 | 1023 | |
9ee32fea DV |
1024 | ret = recv_bytes; |
1025 | out: | |
1026 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
1027 | ||
884f19e9 JN |
1028 | if (vdd) |
1029 | edp_panel_vdd_off(intel_dp, false); | |
1030 | ||
773538e8 | 1031 | pps_unlock(intel_dp); |
e39b999a | 1032 | |
9ee32fea | 1033 | return ret; |
a4fc5ed6 KP |
1034 | } |
1035 | ||
a6c8aff0 JN |
1036 | #define BARE_ADDRESS_SIZE 3 |
1037 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
1038 | static ssize_t |
1039 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 1040 | { |
9d1a1031 JN |
1041 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
1042 | uint8_t txbuf[20], rxbuf[20]; | |
1043 | size_t txsize, rxsize; | |
a4fc5ed6 | 1044 | int ret; |
a4fc5ed6 | 1045 | |
d2d9cbbd VS |
1046 | txbuf[0] = (msg->request << 4) | |
1047 | ((msg->address >> 16) & 0xf); | |
1048 | txbuf[1] = (msg->address >> 8) & 0xff; | |
9d1a1031 JN |
1049 | txbuf[2] = msg->address & 0xff; |
1050 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 1051 | |
9d1a1031 JN |
1052 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
1053 | case DP_AUX_NATIVE_WRITE: | |
1054 | case DP_AUX_I2C_WRITE: | |
c1e74122 | 1055 | case DP_AUX_I2C_WRITE_STATUS_UPDATE: |
a6c8aff0 | 1056 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
a1ddefd8 | 1057 | rxsize = 2; /* 0 or 1 data bytes */ |
f51a44b9 | 1058 | |
9d1a1031 JN |
1059 | if (WARN_ON(txsize > 20)) |
1060 | return -E2BIG; | |
a4fc5ed6 | 1061 | |
dd788090 VS |
1062 | WARN_ON(!msg->buffer != !msg->size); |
1063 | ||
d81a67cc ID |
1064 | if (msg->buffer) |
1065 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); | |
a4fc5ed6 | 1066 | |
9d1a1031 JN |
1067 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
1068 | if (ret > 0) { | |
1069 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 1070 | |
a1ddefd8 JN |
1071 | if (ret > 1) { |
1072 | /* Number of bytes written in a short write. */ | |
1073 | ret = clamp_t(int, rxbuf[1], 0, msg->size); | |
1074 | } else { | |
1075 | /* Return payload size. */ | |
1076 | ret = msg->size; | |
1077 | } | |
9d1a1031 JN |
1078 | } |
1079 | break; | |
46a5ae9f | 1080 | |
9d1a1031 JN |
1081 | case DP_AUX_NATIVE_READ: |
1082 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 1083 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 1084 | rxsize = msg->size + 1; |
a4fc5ed6 | 1085 | |
9d1a1031 JN |
1086 | if (WARN_ON(rxsize > 20)) |
1087 | return -E2BIG; | |
a4fc5ed6 | 1088 | |
9d1a1031 JN |
1089 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
1090 | if (ret > 0) { | |
1091 | msg->reply = rxbuf[0] >> 4; | |
1092 | /* | |
1093 | * Assume happy day, and copy the data. The caller is | |
1094 | * expected to check msg->reply before touching it. | |
1095 | * | |
1096 | * Return payload size. | |
1097 | */ | |
1098 | ret--; | |
1099 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 1100 | } |
9d1a1031 JN |
1101 | break; |
1102 | ||
1103 | default: | |
1104 | ret = -EINVAL; | |
1105 | break; | |
a4fc5ed6 | 1106 | } |
f51a44b9 | 1107 | |
9d1a1031 | 1108 | return ret; |
a4fc5ed6 KP |
1109 | } |
1110 | ||
f0f59a00 VS |
1111 | static i915_reg_t g4x_aux_ctl_reg(struct drm_i915_private *dev_priv, |
1112 | enum port port) | |
da00bdcf VS |
1113 | { |
1114 | switch (port) { | |
1115 | case PORT_B: | |
1116 | case PORT_C: | |
1117 | case PORT_D: | |
1118 | return DP_AUX_CH_CTL(port); | |
1119 | default: | |
1120 | MISSING_CASE(port); | |
1121 | return DP_AUX_CH_CTL(PORT_B); | |
1122 | } | |
1123 | } | |
1124 | ||
f0f59a00 VS |
1125 | static i915_reg_t g4x_aux_data_reg(struct drm_i915_private *dev_priv, |
1126 | enum port port, int index) | |
330e20ec VS |
1127 | { |
1128 | switch (port) { | |
1129 | case PORT_B: | |
1130 | case PORT_C: | |
1131 | case PORT_D: | |
1132 | return DP_AUX_CH_DATA(port, index); | |
1133 | default: | |
1134 | MISSING_CASE(port); | |
1135 | return DP_AUX_CH_DATA(PORT_B, index); | |
1136 | } | |
1137 | } | |
1138 | ||
f0f59a00 VS |
1139 | static i915_reg_t ilk_aux_ctl_reg(struct drm_i915_private *dev_priv, |
1140 | enum port port) | |
da00bdcf VS |
1141 | { |
1142 | switch (port) { | |
1143 | case PORT_A: | |
1144 | return DP_AUX_CH_CTL(port); | |
1145 | case PORT_B: | |
1146 | case PORT_C: | |
1147 | case PORT_D: | |
1148 | return PCH_DP_AUX_CH_CTL(port); | |
1149 | default: | |
1150 | MISSING_CASE(port); | |
1151 | return DP_AUX_CH_CTL(PORT_A); | |
1152 | } | |
1153 | } | |
1154 | ||
f0f59a00 VS |
1155 | static i915_reg_t ilk_aux_data_reg(struct drm_i915_private *dev_priv, |
1156 | enum port port, int index) | |
330e20ec VS |
1157 | { |
1158 | switch (port) { | |
1159 | case PORT_A: | |
1160 | return DP_AUX_CH_DATA(port, index); | |
1161 | case PORT_B: | |
1162 | case PORT_C: | |
1163 | case PORT_D: | |
1164 | return PCH_DP_AUX_CH_DATA(port, index); | |
1165 | default: | |
1166 | MISSING_CASE(port); | |
1167 | return DP_AUX_CH_DATA(PORT_A, index); | |
1168 | } | |
1169 | } | |
1170 | ||
da00bdcf VS |
1171 | /* |
1172 | * On SKL we don't have Aux for port E so we rely | |
1173 | * on VBT to set a proper alternate aux channel. | |
1174 | */ | |
1175 | static enum port skl_porte_aux_port(struct drm_i915_private *dev_priv) | |
1176 | { | |
1177 | const struct ddi_vbt_port_info *info = | |
1178 | &dev_priv->vbt.ddi_port_info[PORT_E]; | |
1179 | ||
1180 | switch (info->alternate_aux_channel) { | |
1181 | case DP_AUX_A: | |
1182 | return PORT_A; | |
1183 | case DP_AUX_B: | |
1184 | return PORT_B; | |
1185 | case DP_AUX_C: | |
1186 | return PORT_C; | |
1187 | case DP_AUX_D: | |
1188 | return PORT_D; | |
1189 | default: | |
1190 | MISSING_CASE(info->alternate_aux_channel); | |
1191 | return PORT_A; | |
1192 | } | |
1193 | } | |
1194 | ||
f0f59a00 VS |
1195 | static i915_reg_t skl_aux_ctl_reg(struct drm_i915_private *dev_priv, |
1196 | enum port port) | |
da00bdcf VS |
1197 | { |
1198 | if (port == PORT_E) | |
1199 | port = skl_porte_aux_port(dev_priv); | |
1200 | ||
1201 | switch (port) { | |
1202 | case PORT_A: | |
1203 | case PORT_B: | |
1204 | case PORT_C: | |
1205 | case PORT_D: | |
1206 | return DP_AUX_CH_CTL(port); | |
1207 | default: | |
1208 | MISSING_CASE(port); | |
1209 | return DP_AUX_CH_CTL(PORT_A); | |
1210 | } | |
1211 | } | |
1212 | ||
f0f59a00 VS |
1213 | static i915_reg_t skl_aux_data_reg(struct drm_i915_private *dev_priv, |
1214 | enum port port, int index) | |
330e20ec VS |
1215 | { |
1216 | if (port == PORT_E) | |
1217 | port = skl_porte_aux_port(dev_priv); | |
1218 | ||
1219 | switch (port) { | |
1220 | case PORT_A: | |
1221 | case PORT_B: | |
1222 | case PORT_C: | |
1223 | case PORT_D: | |
1224 | return DP_AUX_CH_DATA(port, index); | |
1225 | default: | |
1226 | MISSING_CASE(port); | |
1227 | return DP_AUX_CH_DATA(PORT_A, index); | |
1228 | } | |
1229 | } | |
1230 | ||
f0f59a00 VS |
1231 | static i915_reg_t intel_aux_ctl_reg(struct drm_i915_private *dev_priv, |
1232 | enum port port) | |
330e20ec VS |
1233 | { |
1234 | if (INTEL_INFO(dev_priv)->gen >= 9) | |
1235 | return skl_aux_ctl_reg(dev_priv, port); | |
1236 | else if (HAS_PCH_SPLIT(dev_priv)) | |
1237 | return ilk_aux_ctl_reg(dev_priv, port); | |
1238 | else | |
1239 | return g4x_aux_ctl_reg(dev_priv, port); | |
1240 | } | |
1241 | ||
f0f59a00 VS |
1242 | static i915_reg_t intel_aux_data_reg(struct drm_i915_private *dev_priv, |
1243 | enum port port, int index) | |
330e20ec VS |
1244 | { |
1245 | if (INTEL_INFO(dev_priv)->gen >= 9) | |
1246 | return skl_aux_data_reg(dev_priv, port, index); | |
1247 | else if (HAS_PCH_SPLIT(dev_priv)) | |
1248 | return ilk_aux_data_reg(dev_priv, port, index); | |
1249 | else | |
1250 | return g4x_aux_data_reg(dev_priv, port, index); | |
1251 | } | |
1252 | ||
1253 | static void intel_aux_reg_init(struct intel_dp *intel_dp) | |
1254 | { | |
1255 | struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); | |
1256 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1257 | int i; | |
1258 | ||
1259 | intel_dp->aux_ch_ctl_reg = intel_aux_ctl_reg(dev_priv, port); | |
1260 | for (i = 0; i < ARRAY_SIZE(intel_dp->aux_ch_data_reg); i++) | |
1261 | intel_dp->aux_ch_data_reg[i] = intel_aux_data_reg(dev_priv, port, i); | |
1262 | } | |
1263 | ||
9d1a1031 | 1264 | static void |
a121f4e5 VS |
1265 | intel_dp_aux_fini(struct intel_dp *intel_dp) |
1266 | { | |
a121f4e5 VS |
1267 | kfree(intel_dp->aux.name); |
1268 | } | |
1269 | ||
7a418e34 | 1270 | static void |
b6339585 | 1271 | intel_dp_aux_init(struct intel_dp *intel_dp) |
9d1a1031 | 1272 | { |
33ad6626 JN |
1273 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1274 | enum port port = intel_dig_port->port; | |
ab2c0672 | 1275 | |
330e20ec | 1276 | intel_aux_reg_init(intel_dp); |
7a418e34 | 1277 | drm_dp_aux_init(&intel_dp->aux); |
8316f337 | 1278 | |
7a418e34 | 1279 | /* Failure to allocate our preferred name is not critical */ |
a121f4e5 | 1280 | intel_dp->aux.name = kasprintf(GFP_KERNEL, "DPDDC-%c", port_name(port)); |
9d1a1031 | 1281 | intel_dp->aux.transfer = intel_dp_aux_transfer; |
a4fc5ed6 KP |
1282 | } |
1283 | ||
fc0f8e25 | 1284 | static int |
12f6a2e2 | 1285 | intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) |
fc0f8e25 | 1286 | { |
94ca719e VS |
1287 | if (intel_dp->num_sink_rates) { |
1288 | *sink_rates = intel_dp->sink_rates; | |
1289 | return intel_dp->num_sink_rates; | |
fc0f8e25 | 1290 | } |
12f6a2e2 VS |
1291 | |
1292 | *sink_rates = default_rates; | |
1293 | ||
1294 | return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; | |
fc0f8e25 SJ |
1295 | } |
1296 | ||
e588fa18 | 1297 | bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp) |
ed63baaf | 1298 | { |
e588fa18 | 1299 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
577c5430 | 1300 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); |
e588fa18 | 1301 | |
577c5430 NM |
1302 | if ((IS_HASWELL(dev_priv) && !IS_HSW_ULX(dev_priv)) || |
1303 | IS_BROADWELL(dev_priv) || (INTEL_GEN(dev_priv) >= 9)) | |
ed63baaf TS |
1304 | return true; |
1305 | else | |
1306 | return false; | |
1307 | } | |
1308 | ||
a8f3ef61 | 1309 | static int |
e588fa18 | 1310 | intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates) |
a8f3ef61 | 1311 | { |
e588fa18 | 1312 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
577c5430 | 1313 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); |
af7080f5 TS |
1314 | int size; |
1315 | ||
577c5430 | 1316 | if (IS_BROXTON(dev_priv)) { |
64987fc5 | 1317 | *source_rates = bxt_rates; |
af7080f5 | 1318 | size = ARRAY_SIZE(bxt_rates); |
577c5430 | 1319 | } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
637a9c63 | 1320 | *source_rates = skl_rates; |
af7080f5 TS |
1321 | size = ARRAY_SIZE(skl_rates); |
1322 | } else { | |
1323 | *source_rates = default_rates; | |
1324 | size = ARRAY_SIZE(default_rates); | |
a8f3ef61 | 1325 | } |
636280ba | 1326 | |
ed63baaf | 1327 | /* This depends on the fact that 5.4 is last value in the array */ |
e588fa18 | 1328 | if (!intel_dp_source_supports_hbr2(intel_dp)) |
af7080f5 | 1329 | size--; |
636280ba | 1330 | |
af7080f5 | 1331 | return size; |
a8f3ef61 SJ |
1332 | } |
1333 | ||
c6bb3538 DV |
1334 | static void |
1335 | intel_dp_set_clock(struct intel_encoder *encoder, | |
840b32b7 | 1336 | struct intel_crtc_state *pipe_config) |
c6bb3538 DV |
1337 | { |
1338 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
1339 | const struct dp_link_dpll *divisor = NULL; |
1340 | int i, count = 0; | |
c6bb3538 DV |
1341 | |
1342 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
1343 | divisor = gen4_dpll; |
1344 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 1345 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
1346 | divisor = pch_dpll; |
1347 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
1348 | } else if (IS_CHERRYVIEW(dev)) { |
1349 | divisor = chv_dpll; | |
1350 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 1351 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
1352 | divisor = vlv_dpll; |
1353 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 1354 | } |
9dd4ffdf CML |
1355 | |
1356 | if (divisor && count) { | |
1357 | for (i = 0; i < count; i++) { | |
840b32b7 | 1358 | if (pipe_config->port_clock == divisor[i].clock) { |
9dd4ffdf CML |
1359 | pipe_config->dpll = divisor[i].dpll; |
1360 | pipe_config->clock_set = true; | |
1361 | break; | |
1362 | } | |
1363 | } | |
c6bb3538 DV |
1364 | } |
1365 | } | |
1366 | ||
2ecae76a VS |
1367 | static int intersect_rates(const int *source_rates, int source_len, |
1368 | const int *sink_rates, int sink_len, | |
94ca719e | 1369 | int *common_rates) |
a8f3ef61 SJ |
1370 | { |
1371 | int i = 0, j = 0, k = 0; | |
1372 | ||
a8f3ef61 SJ |
1373 | while (i < source_len && j < sink_len) { |
1374 | if (source_rates[i] == sink_rates[j]) { | |
e6bda3e4 VS |
1375 | if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) |
1376 | return k; | |
94ca719e | 1377 | common_rates[k] = source_rates[i]; |
a8f3ef61 SJ |
1378 | ++k; |
1379 | ++i; | |
1380 | ++j; | |
1381 | } else if (source_rates[i] < sink_rates[j]) { | |
1382 | ++i; | |
1383 | } else { | |
1384 | ++j; | |
1385 | } | |
1386 | } | |
1387 | return k; | |
1388 | } | |
1389 | ||
94ca719e VS |
1390 | static int intel_dp_common_rates(struct intel_dp *intel_dp, |
1391 | int *common_rates) | |
2ecae76a | 1392 | { |
2ecae76a VS |
1393 | const int *source_rates, *sink_rates; |
1394 | int source_len, sink_len; | |
1395 | ||
1396 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
e588fa18 | 1397 | source_len = intel_dp_source_rates(intel_dp, &source_rates); |
2ecae76a VS |
1398 | |
1399 | return intersect_rates(source_rates, source_len, | |
1400 | sink_rates, sink_len, | |
94ca719e | 1401 | common_rates); |
2ecae76a VS |
1402 | } |
1403 | ||
0336400e VS |
1404 | static void snprintf_int_array(char *str, size_t len, |
1405 | const int *array, int nelem) | |
1406 | { | |
1407 | int i; | |
1408 | ||
1409 | str[0] = '\0'; | |
1410 | ||
1411 | for (i = 0; i < nelem; i++) { | |
b2f505be | 1412 | int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]); |
0336400e VS |
1413 | if (r >= len) |
1414 | return; | |
1415 | str += r; | |
1416 | len -= r; | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | static void intel_dp_print_rates(struct intel_dp *intel_dp) | |
1421 | { | |
0336400e | 1422 | const int *source_rates, *sink_rates; |
94ca719e VS |
1423 | int source_len, sink_len, common_len; |
1424 | int common_rates[DP_MAX_SUPPORTED_RATES]; | |
0336400e VS |
1425 | char str[128]; /* FIXME: too big for stack? */ |
1426 | ||
1427 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1428 | return; | |
1429 | ||
e588fa18 | 1430 | source_len = intel_dp_source_rates(intel_dp, &source_rates); |
0336400e VS |
1431 | snprintf_int_array(str, sizeof(str), source_rates, source_len); |
1432 | DRM_DEBUG_KMS("source rates: %s\n", str); | |
1433 | ||
1434 | sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); | |
1435 | snprintf_int_array(str, sizeof(str), sink_rates, sink_len); | |
1436 | DRM_DEBUG_KMS("sink rates: %s\n", str); | |
1437 | ||
94ca719e VS |
1438 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
1439 | snprintf_int_array(str, sizeof(str), common_rates, common_len); | |
1440 | DRM_DEBUG_KMS("common rates: %s\n", str); | |
0336400e VS |
1441 | } |
1442 | ||
0e390a33 MK |
1443 | static void intel_dp_print_hw_revision(struct intel_dp *intel_dp) |
1444 | { | |
1445 | uint8_t rev; | |
1446 | int len; | |
1447 | ||
1448 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1449 | return; | |
1450 | ||
1451 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
1452 | DP_DWN_STRM_PORT_PRESENT)) | |
1453 | return; | |
1454 | ||
1455 | len = drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_HW_REV, &rev, 1); | |
1456 | if (len < 0) | |
1457 | return; | |
1458 | ||
1459 | DRM_DEBUG_KMS("sink hw revision: %d.%d\n", (rev & 0xf0) >> 4, rev & 0xf); | |
1460 | } | |
1461 | ||
1a2724fa MK |
1462 | static void intel_dp_print_sw_revision(struct intel_dp *intel_dp) |
1463 | { | |
1464 | uint8_t rev[2]; | |
1465 | int len; | |
1466 | ||
1467 | if ((drm_debug & DRM_UT_KMS) == 0) | |
1468 | return; | |
1469 | ||
1470 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
1471 | DP_DWN_STRM_PORT_PRESENT)) | |
1472 | return; | |
1473 | ||
1474 | len = drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_SW_REV, &rev, 2); | |
1475 | if (len < 0) | |
1476 | return; | |
1477 | ||
1478 | DRM_DEBUG_KMS("sink sw revision: %d.%d\n", rev[0], rev[1]); | |
1479 | } | |
1480 | ||
f4896f15 | 1481 | static int rate_to_index(int find, const int *rates) |
a8f3ef61 SJ |
1482 | { |
1483 | int i = 0; | |
1484 | ||
1485 | for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) | |
1486 | if (find == rates[i]) | |
1487 | break; | |
1488 | ||
1489 | return i; | |
1490 | } | |
1491 | ||
50fec21a VS |
1492 | int |
1493 | intel_dp_max_link_rate(struct intel_dp *intel_dp) | |
1494 | { | |
1495 | int rates[DP_MAX_SUPPORTED_RATES] = {}; | |
1496 | int len; | |
1497 | ||
94ca719e | 1498 | len = intel_dp_common_rates(intel_dp, rates); |
50fec21a VS |
1499 | if (WARN_ON(len <= 0)) |
1500 | return 162000; | |
1501 | ||
1354f734 | 1502 | return rates[len - 1]; |
50fec21a VS |
1503 | } |
1504 | ||
ed4e9c1d VS |
1505 | int intel_dp_rate_select(struct intel_dp *intel_dp, int rate) |
1506 | { | |
94ca719e | 1507 | return rate_to_index(rate, intel_dp->sink_rates); |
ed4e9c1d VS |
1508 | } |
1509 | ||
94223d04 ACO |
1510 | void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, |
1511 | uint8_t *link_bw, uint8_t *rate_select) | |
04a60f9f VS |
1512 | { |
1513 | if (intel_dp->num_sink_rates) { | |
1514 | *link_bw = 0; | |
1515 | *rate_select = | |
1516 | intel_dp_rate_select(intel_dp, port_clock); | |
1517 | } else { | |
1518 | *link_bw = drm_dp_link_rate_to_bw_code(port_clock); | |
1519 | *rate_select = 0; | |
1520 | } | |
1521 | } | |
1522 | ||
f580bea9 JN |
1523 | static int intel_dp_compute_bpp(struct intel_dp *intel_dp, |
1524 | struct intel_crtc_state *pipe_config) | |
f9bb705e MK |
1525 | { |
1526 | int bpp, bpc; | |
1527 | ||
1528 | bpp = pipe_config->pipe_bpp; | |
1529 | bpc = drm_dp_downstream_max_bpc(intel_dp->dpcd, intel_dp->downstream_ports); | |
1530 | ||
1531 | if (bpc > 0) | |
1532 | bpp = min(bpp, 3*bpc); | |
1533 | ||
1534 | return bpp; | |
1535 | } | |
1536 | ||
00c09d70 | 1537 | bool |
5bfe2ac0 | 1538 | intel_dp_compute_config(struct intel_encoder *encoder, |
0a478c27 ML |
1539 | struct intel_crtc_state *pipe_config, |
1540 | struct drm_connector_state *conn_state) | |
a4fc5ed6 | 1541 | { |
5bfe2ac0 | 1542 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 1543 | struct drm_i915_private *dev_priv = to_i915(dev); |
2d112de7 | 1544 | struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
5bfe2ac0 | 1545 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1546 | enum port port = dp_to_dig_port(intel_dp)->port; |
84556d58 | 1547 | struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); |
dd06f90e | 1548 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 1549 | int lane_count, clock; |
56071a20 | 1550 | int min_lane_count = 1; |
eeb6324d | 1551 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 1552 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 1553 | int min_clock = 0; |
a8f3ef61 | 1554 | int max_clock; |
083f9560 | 1555 | int bpp, mode_rate; |
ff9a6750 | 1556 | int link_avail, link_clock; |
94ca719e VS |
1557 | int common_rates[DP_MAX_SUPPORTED_RATES] = {}; |
1558 | int common_len; | |
04a60f9f | 1559 | uint8_t link_bw, rate_select; |
a8f3ef61 | 1560 | |
94ca719e | 1561 | common_len = intel_dp_common_rates(intel_dp, common_rates); |
a8f3ef61 SJ |
1562 | |
1563 | /* No common link rates between source and sink */ | |
94ca719e | 1564 | WARN_ON(common_len <= 0); |
a8f3ef61 | 1565 | |
94ca719e | 1566 | max_clock = common_len - 1; |
a4fc5ed6 | 1567 | |
bc7d38a4 | 1568 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
1569 | pipe_config->has_pch_encoder = true; |
1570 | ||
f769cd24 | 1571 | pipe_config->has_drrs = false; |
9fcb1704 | 1572 | pipe_config->has_audio = intel_dp->has_audio && port != PORT_A; |
a4fc5ed6 | 1573 | |
dd06f90e JN |
1574 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
1575 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
1576 | adjusted_mode); | |
a1b2278e CK |
1577 | |
1578 | if (INTEL_INFO(dev)->gen >= 9) { | |
1579 | int ret; | |
e435d6e5 | 1580 | ret = skl_update_scaler_crtc(pipe_config); |
a1b2278e CK |
1581 | if (ret) |
1582 | return ret; | |
1583 | } | |
1584 | ||
b5667627 | 1585 | if (HAS_GMCH_DISPLAY(dev)) |
2dd24552 JB |
1586 | intel_gmch_panel_fitting(intel_crtc, pipe_config, |
1587 | intel_connector->panel.fitting_mode); | |
1588 | else | |
b074cec8 JB |
1589 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
1590 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
1591 | } |
1592 | ||
cb1793ce | 1593 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
1594 | return false; |
1595 | ||
083f9560 | 1596 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
a8f3ef61 | 1597 | "max bw %d pixel clock %iKHz\n", |
94ca719e | 1598 | max_lane_count, common_rates[max_clock], |
241bfc38 | 1599 | adjusted_mode->crtc_clock); |
083f9560 | 1600 | |
36008365 DV |
1601 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
1602 | * bpc in between. */ | |
f9bb705e | 1603 | bpp = intel_dp_compute_bpp(intel_dp, pipe_config); |
56071a20 | 1604 | if (is_edp(intel_dp)) { |
22ce5628 TS |
1605 | |
1606 | /* Get bpp from vbt only for panels that dont have bpp in edid */ | |
1607 | if (intel_connector->base.display_info.bpc == 0 && | |
6aa23e65 | 1608 | (dev_priv->vbt.edp.bpp && dev_priv->vbt.edp.bpp < bpp)) { |
56071a20 | 1609 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", |
6aa23e65 JN |
1610 | dev_priv->vbt.edp.bpp); |
1611 | bpp = dev_priv->vbt.edp.bpp; | |
56071a20 JN |
1612 | } |
1613 | ||
344c5bbc JN |
1614 | /* |
1615 | * Use the maximum clock and number of lanes the eDP panel | |
1616 | * advertizes being capable of. The panels are generally | |
1617 | * designed to support only a single clock and lane | |
1618 | * configuration, and typically these values correspond to the | |
1619 | * native resolution of the panel. | |
1620 | */ | |
1621 | min_lane_count = max_lane_count; | |
1622 | min_clock = max_clock; | |
7984211e | 1623 | } |
657445fe | 1624 | |
36008365 | 1625 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
1626 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
1627 | bpp); | |
36008365 | 1628 | |
c6930992 | 1629 | for (clock = min_clock; clock <= max_clock; clock++) { |
a8f3ef61 SJ |
1630 | for (lane_count = min_lane_count; |
1631 | lane_count <= max_lane_count; | |
1632 | lane_count <<= 1) { | |
1633 | ||
94ca719e | 1634 | link_clock = common_rates[clock]; |
36008365 DV |
1635 | link_avail = intel_dp_max_data_rate(link_clock, |
1636 | lane_count); | |
1637 | ||
1638 | if (mode_rate <= link_avail) { | |
1639 | goto found; | |
1640 | } | |
1641 | } | |
1642 | } | |
1643 | } | |
c4867936 | 1644 | |
36008365 | 1645 | return false; |
3685a8f3 | 1646 | |
36008365 | 1647 | found: |
55bc60db VS |
1648 | if (intel_dp->color_range_auto) { |
1649 | /* | |
1650 | * See: | |
1651 | * CEA-861-E - 5.1 Default Encoding Parameters | |
1652 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
1653 | */ | |
0f2a2a75 VS |
1654 | pipe_config->limited_color_range = |
1655 | bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1; | |
1656 | } else { | |
1657 | pipe_config->limited_color_range = | |
1658 | intel_dp->limited_color_range; | |
55bc60db VS |
1659 | } |
1660 | ||
90a6b7b0 | 1661 | pipe_config->lane_count = lane_count; |
a8f3ef61 | 1662 | |
657445fe | 1663 | pipe_config->pipe_bpp = bpp; |
94ca719e | 1664 | pipe_config->port_clock = common_rates[clock]; |
a4fc5ed6 | 1665 | |
04a60f9f VS |
1666 | intel_dp_compute_rate(intel_dp, pipe_config->port_clock, |
1667 | &link_bw, &rate_select); | |
1668 | ||
1669 | DRM_DEBUG_KMS("DP link bw %02x rate select %02x lane count %d clock %d bpp %d\n", | |
1670 | link_bw, rate_select, pipe_config->lane_count, | |
ff9a6750 | 1671 | pipe_config->port_clock, bpp); |
36008365 DV |
1672 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
1673 | mode_rate, link_avail); | |
a4fc5ed6 | 1674 | |
03afc4a2 | 1675 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
1676 | adjusted_mode->crtc_clock, |
1677 | pipe_config->port_clock, | |
03afc4a2 | 1678 | &pipe_config->dp_m_n); |
9d1a455b | 1679 | |
439d7ac0 | 1680 | if (intel_connector->panel.downclock_mode != NULL && |
96178eeb | 1681 | dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { |
f769cd24 | 1682 | pipe_config->has_drrs = true; |
439d7ac0 PB |
1683 | intel_link_compute_m_n(bpp, lane_count, |
1684 | intel_connector->panel.downclock_mode->clock, | |
1685 | pipe_config->port_clock, | |
1686 | &pipe_config->dp_m2_n2); | |
1687 | } | |
1688 | ||
14d41b3b VS |
1689 | /* |
1690 | * DPLL0 VCO may need to be adjusted to get the correct | |
1691 | * clock for eDP. This will affect cdclk as well. | |
1692 | */ | |
1693 | if (is_edp(intel_dp) && | |
1694 | (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))) { | |
1695 | int vco; | |
1696 | ||
1697 | switch (pipe_config->port_clock / 2) { | |
1698 | case 108000: | |
1699 | case 216000: | |
63911d72 | 1700 | vco = 8640000; |
14d41b3b VS |
1701 | break; |
1702 | default: | |
63911d72 | 1703 | vco = 8100000; |
14d41b3b VS |
1704 | break; |
1705 | } | |
1706 | ||
1707 | to_intel_atomic_state(pipe_config->base.state)->cdclk_pll_vco = vco; | |
1708 | } | |
1709 | ||
a3c988ea | 1710 | if (!HAS_DDI(dev)) |
840b32b7 | 1711 | intel_dp_set_clock(encoder, pipe_config); |
c6bb3538 | 1712 | |
03afc4a2 | 1713 | return true; |
a4fc5ed6 KP |
1714 | } |
1715 | ||
901c2daf | 1716 | void intel_dp_set_link_params(struct intel_dp *intel_dp, |
dfa10480 ACO |
1717 | int link_rate, uint8_t lane_count, |
1718 | bool link_mst) | |
901c2daf | 1719 | { |
dfa10480 ACO |
1720 | intel_dp->link_rate = link_rate; |
1721 | intel_dp->lane_count = lane_count; | |
1722 | intel_dp->link_mst = link_mst; | |
901c2daf VS |
1723 | } |
1724 | ||
85cb48a1 ML |
1725 | static void intel_dp_prepare(struct intel_encoder *encoder, |
1726 | struct intel_crtc_state *pipe_config) | |
a4fc5ed6 | 1727 | { |
b934223d | 1728 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 1729 | struct drm_i915_private *dev_priv = to_i915(dev); |
b934223d | 1730 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1731 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d | 1732 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
85cb48a1 | 1733 | const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; |
a4fc5ed6 | 1734 | |
dfa10480 ACO |
1735 | intel_dp_set_link_params(intel_dp, pipe_config->port_clock, |
1736 | pipe_config->lane_count, | |
1737 | intel_crtc_has_type(pipe_config, | |
1738 | INTEL_OUTPUT_DP_MST)); | |
901c2daf | 1739 | |
417e822d | 1740 | /* |
1a2eb460 | 1741 | * There are four kinds of DP registers: |
417e822d KP |
1742 | * |
1743 | * IBX PCH | |
1a2eb460 KP |
1744 | * SNB CPU |
1745 | * IVB CPU | |
417e822d KP |
1746 | * CPT PCH |
1747 | * | |
1748 | * IBX PCH and CPU are the same for almost everything, | |
1749 | * except that the CPU DP PLL is configured in this | |
1750 | * register | |
1751 | * | |
1752 | * CPT PCH is quite different, having many bits moved | |
1753 | * to the TRANS_DP_CTL register instead. That | |
1754 | * configuration happens (oddly) in ironlake_pch_enable | |
1755 | */ | |
9c9e7927 | 1756 | |
417e822d KP |
1757 | /* Preserve the BIOS-computed detected bit. This is |
1758 | * supposed to be read-only. | |
1759 | */ | |
1760 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1761 | |
417e822d | 1762 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1763 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
85cb48a1 | 1764 | intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count); |
a4fc5ed6 | 1765 | |
417e822d | 1766 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1767 | |
39e5fa88 | 1768 | if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
1769 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1770 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1771 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1772 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1773 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1774 | ||
6aba5b6c | 1775 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1776 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1777 | ||
7c62a164 | 1778 | intel_dp->DP |= crtc->pipe << 29; |
39e5fa88 | 1779 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
e3ef4479 VS |
1780 | u32 trans_dp; |
1781 | ||
39e5fa88 | 1782 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; |
e3ef4479 VS |
1783 | |
1784 | trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1785 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
1786 | trans_dp |= TRANS_DP_ENH_FRAMING; | |
1787 | else | |
1788 | trans_dp &= ~TRANS_DP_ENH_FRAMING; | |
1789 | I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp); | |
39e5fa88 | 1790 | } else { |
0f2a2a75 | 1791 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
85cb48a1 | 1792 | !IS_CHERRYVIEW(dev) && pipe_config->limited_color_range) |
0f2a2a75 | 1793 | intel_dp->DP |= DP_COLOR_RANGE_16_235; |
417e822d KP |
1794 | |
1795 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1796 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1797 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1798 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1799 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1800 | ||
6aba5b6c | 1801 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1802 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1803 | ||
39e5fa88 | 1804 | if (IS_CHERRYVIEW(dev)) |
44f37d1f | 1805 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); |
39e5fa88 VS |
1806 | else if (crtc->pipe == PIPE_B) |
1807 | intel_dp->DP |= DP_PIPEB_SELECT; | |
32f9d658 | 1808 | } |
a4fc5ed6 KP |
1809 | } |
1810 | ||
ffd6749d PZ |
1811 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1812 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1813 | |
1a5ef5b7 PZ |
1814 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1815 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1816 | |
ffd6749d PZ |
1817 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1818 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1819 | |
de9c1b6b ID |
1820 | static void intel_pps_verify_state(struct drm_i915_private *dev_priv, |
1821 | struct intel_dp *intel_dp); | |
1822 | ||
4be73780 | 1823 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1824 | u32 mask, |
1825 | u32 value) | |
bd943159 | 1826 | { |
30add22d | 1827 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 1828 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0f59a00 | 1829 | i915_reg_t pp_stat_reg, pp_ctrl_reg; |
453c5420 | 1830 | |
e39b999a VS |
1831 | lockdep_assert_held(&dev_priv->pps_mutex); |
1832 | ||
de9c1b6b ID |
1833 | intel_pps_verify_state(dev_priv, intel_dp); |
1834 | ||
bf13e81b JN |
1835 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1836 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1837 | |
99ea7127 | 1838 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1839 | mask, value, |
1840 | I915_READ(pp_stat_reg), | |
1841 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1842 | |
9036ff06 CW |
1843 | if (intel_wait_for_register(dev_priv, |
1844 | pp_stat_reg, mask, value, | |
1845 | 5000)) | |
99ea7127 | 1846 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1847 | I915_READ(pp_stat_reg), |
1848 | I915_READ(pp_ctrl_reg)); | |
54c136d4 CW |
1849 | |
1850 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1851 | } |
32ce697c | 1852 | |
4be73780 | 1853 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1854 | { |
1855 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1856 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1857 | } |
1858 | ||
4be73780 | 1859 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1860 | { |
1861 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1862 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1863 | } |
1864 | ||
4be73780 | 1865 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 | 1866 | { |
d28d4731 AK |
1867 | ktime_t panel_power_on_time; |
1868 | s64 panel_power_off_duration; | |
1869 | ||
99ea7127 | 1870 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); |
dce56b3c | 1871 | |
d28d4731 AK |
1872 | /* take the difference of currrent time and panel power off time |
1873 | * and then make panel wait for t11_t12 if needed. */ | |
1874 | panel_power_on_time = ktime_get_boottime(); | |
1875 | panel_power_off_duration = ktime_ms_delta(panel_power_on_time, intel_dp->panel_power_off_time); | |
1876 | ||
dce56b3c PZ |
1877 | /* When we disable the VDD override bit last we have to do the manual |
1878 | * wait. */ | |
d28d4731 AK |
1879 | if (panel_power_off_duration < (s64)intel_dp->panel_power_cycle_delay) |
1880 | wait_remaining_ms_from_jiffies(jiffies, | |
1881 | intel_dp->panel_power_cycle_delay - panel_power_off_duration); | |
dce56b3c | 1882 | |
4be73780 | 1883 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1884 | } |
1885 | ||
4be73780 | 1886 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1887 | { |
1888 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1889 | intel_dp->backlight_on_delay); | |
1890 | } | |
1891 | ||
4be73780 | 1892 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1893 | { |
1894 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1895 | intel_dp->backlight_off_delay); | |
1896 | } | |
99ea7127 | 1897 | |
832dd3c1 KP |
1898 | /* Read the current pp_control value, unlocking the register if it |
1899 | * is locked | |
1900 | */ | |
1901 | ||
453c5420 | 1902 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1903 | { |
453c5420 | 1904 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 1905 | struct drm_i915_private *dev_priv = to_i915(dev); |
453c5420 | 1906 | u32 control; |
832dd3c1 | 1907 | |
e39b999a VS |
1908 | lockdep_assert_held(&dev_priv->pps_mutex); |
1909 | ||
bf13e81b | 1910 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
8090ba8c ID |
1911 | if (WARN_ON(!HAS_DDI(dev_priv) && |
1912 | (control & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS)) { | |
b0a08bec VK |
1913 | control &= ~PANEL_UNLOCK_MASK; |
1914 | control |= PANEL_UNLOCK_REGS; | |
1915 | } | |
832dd3c1 | 1916 | return control; |
bd943159 KP |
1917 | } |
1918 | ||
951468f3 VS |
1919 | /* |
1920 | * Must be paired with edp_panel_vdd_off(). | |
1921 | * Must hold pps_mutex around the whole on/off sequence. | |
1922 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
1923 | */ | |
1e0560e0 | 1924 | static bool edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1925 | { |
30add22d | 1926 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1927 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1928 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fac5e23e | 1929 | struct drm_i915_private *dev_priv = to_i915(dev); |
4e6e1a54 | 1930 | enum intel_display_power_domain power_domain; |
5d613501 | 1931 | u32 pp; |
f0f59a00 | 1932 | i915_reg_t pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1933 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1934 | |
e39b999a VS |
1935 | lockdep_assert_held(&dev_priv->pps_mutex); |
1936 | ||
97af61f5 | 1937 | if (!is_edp(intel_dp)) |
adddaaf4 | 1938 | return false; |
bd943159 | 1939 | |
2c623c11 | 1940 | cancel_delayed_work(&intel_dp->panel_vdd_work); |
bd943159 | 1941 | intel_dp->want_panel_vdd = true; |
99ea7127 | 1942 | |
4be73780 | 1943 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1944 | return need_to_disable; |
b0665d57 | 1945 | |
25f78f58 | 1946 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4e6e1a54 | 1947 | intel_display_power_get(dev_priv, power_domain); |
e9cb81a2 | 1948 | |
3936fcf4 VS |
1949 | DRM_DEBUG_KMS("Turning eDP port %c VDD on\n", |
1950 | port_name(intel_dig_port->port)); | |
bd943159 | 1951 | |
4be73780 DV |
1952 | if (!edp_have_panel_power(intel_dp)) |
1953 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1954 | |
453c5420 | 1955 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1956 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1957 | |
bf13e81b JN |
1958 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1959 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1960 | |
1961 | I915_WRITE(pp_ctrl_reg, pp); | |
1962 | POSTING_READ(pp_ctrl_reg); | |
1963 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1964 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1965 | /* |
1966 | * If the panel wasn't on, delay before accessing aux channel | |
1967 | */ | |
4be73780 | 1968 | if (!edp_have_panel_power(intel_dp)) { |
3936fcf4 VS |
1969 | DRM_DEBUG_KMS("eDP port %c panel power wasn't enabled\n", |
1970 | port_name(intel_dig_port->port)); | |
f01eca2e | 1971 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1972 | } |
adddaaf4 JN |
1973 | |
1974 | return need_to_disable; | |
1975 | } | |
1976 | ||
951468f3 VS |
1977 | /* |
1978 | * Must be paired with intel_edp_panel_vdd_off() or | |
1979 | * intel_edp_panel_off(). | |
1980 | * Nested calls to these functions are not allowed since | |
1981 | * we drop the lock. Caller must use some higher level | |
1982 | * locking to prevent nested calls from other threads. | |
1983 | */ | |
b80d6c78 | 1984 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 | 1985 | { |
c695b6b6 | 1986 | bool vdd; |
adddaaf4 | 1987 | |
c695b6b6 VS |
1988 | if (!is_edp(intel_dp)) |
1989 | return; | |
1990 | ||
773538e8 | 1991 | pps_lock(intel_dp); |
c695b6b6 | 1992 | vdd = edp_panel_vdd_on(intel_dp); |
773538e8 | 1993 | pps_unlock(intel_dp); |
c695b6b6 | 1994 | |
e2c719b7 | 1995 | I915_STATE_WARN(!vdd, "eDP port %c VDD already requested on\n", |
3936fcf4 | 1996 | port_name(dp_to_dig_port(intel_dp)->port)); |
5d613501 JB |
1997 | } |
1998 | ||
4be73780 | 1999 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 2000 | { |
30add22d | 2001 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2002 | struct drm_i915_private *dev_priv = to_i915(dev); |
be2c9196 VS |
2003 | struct intel_digital_port *intel_dig_port = |
2004 | dp_to_dig_port(intel_dp); | |
2005 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
2006 | enum intel_display_power_domain power_domain; | |
5d613501 | 2007 | u32 pp; |
f0f59a00 | 2008 | i915_reg_t pp_stat_reg, pp_ctrl_reg; |
5d613501 | 2009 | |
e39b999a | 2010 | lockdep_assert_held(&dev_priv->pps_mutex); |
a0e99e68 | 2011 | |
15e899a0 | 2012 | WARN_ON(intel_dp->want_panel_vdd); |
4e6e1a54 | 2013 | |
15e899a0 | 2014 | if (!edp_have_panel_vdd(intel_dp)) |
be2c9196 | 2015 | return; |
b0665d57 | 2016 | |
3936fcf4 VS |
2017 | DRM_DEBUG_KMS("Turning eDP port %c VDD off\n", |
2018 | port_name(intel_dig_port->port)); | |
bd943159 | 2019 | |
be2c9196 VS |
2020 | pp = ironlake_get_pp_control(intel_dp); |
2021 | pp &= ~EDP_FORCE_VDD; | |
453c5420 | 2022 | |
be2c9196 VS |
2023 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
2024 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
99ea7127 | 2025 | |
be2c9196 VS |
2026 | I915_WRITE(pp_ctrl_reg, pp); |
2027 | POSTING_READ(pp_ctrl_reg); | |
90791a5c | 2028 | |
be2c9196 VS |
2029 | /* Make sure sequencer is idle before allowing subsequent activity */ |
2030 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
2031 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
e9cb81a2 | 2032 | |
5a162e22 | 2033 | if ((pp & PANEL_POWER_ON) == 0) |
d28d4731 | 2034 | intel_dp->panel_power_off_time = ktime_get_boottime(); |
e9cb81a2 | 2035 | |
25f78f58 | 2036 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
be2c9196 | 2037 | intel_display_power_put(dev_priv, power_domain); |
bd943159 | 2038 | } |
5d613501 | 2039 | |
4be73780 | 2040 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
2041 | { |
2042 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
2043 | struct intel_dp, panel_vdd_work); | |
bd943159 | 2044 | |
773538e8 | 2045 | pps_lock(intel_dp); |
15e899a0 VS |
2046 | if (!intel_dp->want_panel_vdd) |
2047 | edp_panel_vdd_off_sync(intel_dp); | |
773538e8 | 2048 | pps_unlock(intel_dp); |
bd943159 KP |
2049 | } |
2050 | ||
aba86890 ID |
2051 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
2052 | { | |
2053 | unsigned long delay; | |
2054 | ||
2055 | /* | |
2056 | * Queue the timer to fire a long time from now (relative to the power | |
2057 | * down delay) to keep the panel power up across a sequence of | |
2058 | * operations. | |
2059 | */ | |
2060 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
2061 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
2062 | } | |
2063 | ||
951468f3 VS |
2064 | /* |
2065 | * Must be paired with edp_panel_vdd_on(). | |
2066 | * Must hold pps_mutex around the whole on/off sequence. | |
2067 | * Can be nested with intel_edp_panel_vdd_{on,off}() calls. | |
2068 | */ | |
4be73780 | 2069 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 2070 | { |
fac5e23e | 2071 | struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); |
e39b999a VS |
2072 | |
2073 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2074 | ||
97af61f5 KP |
2075 | if (!is_edp(intel_dp)) |
2076 | return; | |
5d613501 | 2077 | |
e2c719b7 | 2078 | I915_STATE_WARN(!intel_dp->want_panel_vdd, "eDP port %c VDD not forced on", |
3936fcf4 | 2079 | port_name(dp_to_dig_port(intel_dp)->port)); |
f2e8b18a | 2080 | |
bd943159 KP |
2081 | intel_dp->want_panel_vdd = false; |
2082 | ||
aba86890 | 2083 | if (sync) |
4be73780 | 2084 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
2085 | else |
2086 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
2087 | } |
2088 | ||
9f0fb5be | 2089 | static void edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 2090 | { |
30add22d | 2091 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2092 | struct drm_i915_private *dev_priv = to_i915(dev); |
99ea7127 | 2093 | u32 pp; |
f0f59a00 | 2094 | i915_reg_t pp_ctrl_reg; |
9934c132 | 2095 | |
9f0fb5be VS |
2096 | lockdep_assert_held(&dev_priv->pps_mutex); |
2097 | ||
97af61f5 | 2098 | if (!is_edp(intel_dp)) |
bd943159 | 2099 | return; |
99ea7127 | 2100 | |
3936fcf4 VS |
2101 | DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", |
2102 | port_name(dp_to_dig_port(intel_dp)->port)); | |
e39b999a | 2103 | |
e7a89ace VS |
2104 | if (WARN(edp_have_panel_power(intel_dp), |
2105 | "eDP port %c panel power already on\n", | |
2106 | port_name(dp_to_dig_port(intel_dp)->port))) | |
9f0fb5be | 2107 | return; |
9934c132 | 2108 | |
4be73780 | 2109 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 2110 | |
bf13e81b | 2111 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 2112 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
2113 | if (IS_GEN5(dev)) { |
2114 | /* ILK workaround: disable reset around power sequence */ | |
2115 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
2116 | I915_WRITE(pp_ctrl_reg, pp); |
2117 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 2118 | } |
37c6c9b0 | 2119 | |
5a162e22 | 2120 | pp |= PANEL_POWER_ON; |
99ea7127 KP |
2121 | if (!IS_GEN5(dev)) |
2122 | pp |= PANEL_POWER_RESET; | |
2123 | ||
453c5420 JB |
2124 | I915_WRITE(pp_ctrl_reg, pp); |
2125 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 2126 | |
4be73780 | 2127 | wait_panel_on(intel_dp); |
dce56b3c | 2128 | intel_dp->last_power_on = jiffies; |
9934c132 | 2129 | |
05ce1a49 KP |
2130 | if (IS_GEN5(dev)) { |
2131 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
2132 | I915_WRITE(pp_ctrl_reg, pp); |
2133 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 2134 | } |
9f0fb5be | 2135 | } |
e39b999a | 2136 | |
9f0fb5be VS |
2137 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
2138 | { | |
2139 | if (!is_edp(intel_dp)) | |
2140 | return; | |
2141 | ||
2142 | pps_lock(intel_dp); | |
2143 | edp_panel_on(intel_dp); | |
773538e8 | 2144 | pps_unlock(intel_dp); |
9934c132 JB |
2145 | } |
2146 | ||
9f0fb5be VS |
2147 | |
2148 | static void edp_panel_off(struct intel_dp *intel_dp) | |
9934c132 | 2149 | { |
4e6e1a54 ID |
2150 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2151 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 2152 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2153 | struct drm_i915_private *dev_priv = to_i915(dev); |
4e6e1a54 | 2154 | enum intel_display_power_domain power_domain; |
99ea7127 | 2155 | u32 pp; |
f0f59a00 | 2156 | i915_reg_t pp_ctrl_reg; |
9934c132 | 2157 | |
9f0fb5be VS |
2158 | lockdep_assert_held(&dev_priv->pps_mutex); |
2159 | ||
97af61f5 KP |
2160 | if (!is_edp(intel_dp)) |
2161 | return; | |
37c6c9b0 | 2162 | |
3936fcf4 VS |
2163 | DRM_DEBUG_KMS("Turn eDP port %c panel power off\n", |
2164 | port_name(dp_to_dig_port(intel_dp)->port)); | |
37c6c9b0 | 2165 | |
3936fcf4 VS |
2166 | WARN(!intel_dp->want_panel_vdd, "Need eDP port %c VDD to turn off panel\n", |
2167 | port_name(dp_to_dig_port(intel_dp)->port)); | |
24f3e092 | 2168 | |
453c5420 | 2169 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
2170 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
2171 | * panels get very unhappy and cease to work. */ | |
5a162e22 | 2172 | pp &= ~(PANEL_POWER_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
b3064154 | 2173 | EDP_BLC_ENABLE); |
453c5420 | 2174 | |
bf13e81b | 2175 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 2176 | |
849e39f5 PZ |
2177 | intel_dp->want_panel_vdd = false; |
2178 | ||
453c5420 JB |
2179 | I915_WRITE(pp_ctrl_reg, pp); |
2180 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 2181 | |
d28d4731 | 2182 | intel_dp->panel_power_off_time = ktime_get_boottime(); |
4be73780 | 2183 | wait_panel_off(intel_dp); |
849e39f5 PZ |
2184 | |
2185 | /* We got a reference when we enabled the VDD. */ | |
25f78f58 | 2186 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4e6e1a54 | 2187 | intel_display_power_put(dev_priv, power_domain); |
9f0fb5be | 2188 | } |
e39b999a | 2189 | |
9f0fb5be VS |
2190 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
2191 | { | |
2192 | if (!is_edp(intel_dp)) | |
2193 | return; | |
e39b999a | 2194 | |
9f0fb5be VS |
2195 | pps_lock(intel_dp); |
2196 | edp_panel_off(intel_dp); | |
773538e8 | 2197 | pps_unlock(intel_dp); |
9934c132 JB |
2198 | } |
2199 | ||
1250d107 JN |
2200 | /* Enable backlight in the panel power control. */ |
2201 | static void _intel_edp_backlight_on(struct intel_dp *intel_dp) | |
32f9d658 | 2202 | { |
da63a9f2 PZ |
2203 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2204 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 2205 | struct drm_i915_private *dev_priv = to_i915(dev); |
32f9d658 | 2206 | u32 pp; |
f0f59a00 | 2207 | i915_reg_t pp_ctrl_reg; |
32f9d658 | 2208 | |
01cb9ea6 JB |
2209 | /* |
2210 | * If we enable the backlight right away following a panel power | |
2211 | * on, we may see slight flicker as the panel syncs with the eDP | |
2212 | * link. So delay a bit to make sure the image is solid before | |
2213 | * allowing it to appear. | |
2214 | */ | |
4be73780 | 2215 | wait_backlight_on(intel_dp); |
e39b999a | 2216 | |
773538e8 | 2217 | pps_lock(intel_dp); |
e39b999a | 2218 | |
453c5420 | 2219 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2220 | pp |= EDP_BLC_ENABLE; |
453c5420 | 2221 | |
bf13e81b | 2222 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2223 | |
2224 | I915_WRITE(pp_ctrl_reg, pp); | |
2225 | POSTING_READ(pp_ctrl_reg); | |
e39b999a | 2226 | |
773538e8 | 2227 | pps_unlock(intel_dp); |
32f9d658 ZW |
2228 | } |
2229 | ||
1250d107 JN |
2230 | /* Enable backlight PWM and backlight PP control. */ |
2231 | void intel_edp_backlight_on(struct intel_dp *intel_dp) | |
2232 | { | |
2233 | if (!is_edp(intel_dp)) | |
2234 | return; | |
2235 | ||
2236 | DRM_DEBUG_KMS("\n"); | |
2237 | ||
2238 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
2239 | _intel_edp_backlight_on(intel_dp); | |
2240 | } | |
2241 | ||
2242 | /* Disable backlight in the panel power control. */ | |
2243 | static void _intel_edp_backlight_off(struct intel_dp *intel_dp) | |
32f9d658 | 2244 | { |
30add22d | 2245 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2246 | struct drm_i915_private *dev_priv = to_i915(dev); |
32f9d658 | 2247 | u32 pp; |
f0f59a00 | 2248 | i915_reg_t pp_ctrl_reg; |
32f9d658 | 2249 | |
f01eca2e KP |
2250 | if (!is_edp(intel_dp)) |
2251 | return; | |
2252 | ||
773538e8 | 2253 | pps_lock(intel_dp); |
e39b999a | 2254 | |
453c5420 | 2255 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 2256 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 2257 | |
bf13e81b | 2258 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
2259 | |
2260 | I915_WRITE(pp_ctrl_reg, pp); | |
2261 | POSTING_READ(pp_ctrl_reg); | |
f7d2323c | 2262 | |
773538e8 | 2263 | pps_unlock(intel_dp); |
e39b999a VS |
2264 | |
2265 | intel_dp->last_backlight_off = jiffies; | |
f7d2323c | 2266 | edp_wait_backlight_off(intel_dp); |
1250d107 | 2267 | } |
f7d2323c | 2268 | |
1250d107 JN |
2269 | /* Disable backlight PP control and backlight PWM. */ |
2270 | void intel_edp_backlight_off(struct intel_dp *intel_dp) | |
2271 | { | |
2272 | if (!is_edp(intel_dp)) | |
2273 | return; | |
2274 | ||
2275 | DRM_DEBUG_KMS("\n"); | |
f7d2323c | 2276 | |
1250d107 | 2277 | _intel_edp_backlight_off(intel_dp); |
f7d2323c | 2278 | intel_panel_disable_backlight(intel_dp->attached_connector); |
32f9d658 | 2279 | } |
a4fc5ed6 | 2280 | |
73580fb7 JN |
2281 | /* |
2282 | * Hook for controlling the panel power control backlight through the bl_power | |
2283 | * sysfs attribute. Take care to handle multiple calls. | |
2284 | */ | |
2285 | static void intel_edp_backlight_power(struct intel_connector *connector, | |
2286 | bool enable) | |
2287 | { | |
2288 | struct intel_dp *intel_dp = intel_attached_dp(&connector->base); | |
e39b999a VS |
2289 | bool is_enabled; |
2290 | ||
773538e8 | 2291 | pps_lock(intel_dp); |
e39b999a | 2292 | is_enabled = ironlake_get_pp_control(intel_dp) & EDP_BLC_ENABLE; |
773538e8 | 2293 | pps_unlock(intel_dp); |
73580fb7 JN |
2294 | |
2295 | if (is_enabled == enable) | |
2296 | return; | |
2297 | ||
23ba9373 JN |
2298 | DRM_DEBUG_KMS("panel power control backlight %s\n", |
2299 | enable ? "enable" : "disable"); | |
73580fb7 JN |
2300 | |
2301 | if (enable) | |
2302 | _intel_edp_backlight_on(intel_dp); | |
2303 | else | |
2304 | _intel_edp_backlight_off(intel_dp); | |
2305 | } | |
2306 | ||
64e1077a VS |
2307 | static void assert_dp_port(struct intel_dp *intel_dp, bool state) |
2308 | { | |
2309 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
2310 | struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); | |
2311 | bool cur_state = I915_READ(intel_dp->output_reg) & DP_PORT_EN; | |
2312 | ||
2313 | I915_STATE_WARN(cur_state != state, | |
2314 | "DP port %c state assertion failure (expected %s, current %s)\n", | |
2315 | port_name(dig_port->port), | |
87ad3212 | 2316 | onoff(state), onoff(cur_state)); |
64e1077a VS |
2317 | } |
2318 | #define assert_dp_port_disabled(d) assert_dp_port((d), false) | |
2319 | ||
2320 | static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state) | |
2321 | { | |
2322 | bool cur_state = I915_READ(DP_A) & DP_PLL_ENABLE; | |
2323 | ||
2324 | I915_STATE_WARN(cur_state != state, | |
2325 | "eDP PLL state assertion failure (expected %s, current %s)\n", | |
87ad3212 | 2326 | onoff(state), onoff(cur_state)); |
64e1077a VS |
2327 | } |
2328 | #define assert_edp_pll_enabled(d) assert_edp_pll((d), true) | |
2329 | #define assert_edp_pll_disabled(d) assert_edp_pll((d), false) | |
2330 | ||
85cb48a1 ML |
2331 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp, |
2332 | struct intel_crtc_state *pipe_config) | |
d240f20f | 2333 | { |
85cb48a1 | 2334 | struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc); |
64e1077a | 2335 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); |
d240f20f | 2336 | |
64e1077a VS |
2337 | assert_pipe_disabled(dev_priv, crtc->pipe); |
2338 | assert_dp_port_disabled(intel_dp); | |
2339 | assert_edp_pll_disabled(dev_priv); | |
2bd2ad64 | 2340 | |
abfce949 | 2341 | DRM_DEBUG_KMS("enabling eDP PLL for clock %d\n", |
85cb48a1 | 2342 | pipe_config->port_clock); |
abfce949 VS |
2343 | |
2344 | intel_dp->DP &= ~DP_PLL_FREQ_MASK; | |
2345 | ||
85cb48a1 | 2346 | if (pipe_config->port_clock == 162000) |
abfce949 VS |
2347 | intel_dp->DP |= DP_PLL_FREQ_162MHZ; |
2348 | else | |
2349 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; | |
2350 | ||
2351 | I915_WRITE(DP_A, intel_dp->DP); | |
2352 | POSTING_READ(DP_A); | |
2353 | udelay(500); | |
2354 | ||
6b23f3e8 VS |
2355 | /* |
2356 | * [DevILK] Work around required when enabling DP PLL | |
2357 | * while a pipe is enabled going to FDI: | |
2358 | * 1. Wait for the start of vertical blank on the enabled pipe going to FDI | |
2359 | * 2. Program DP PLL enable | |
2360 | */ | |
2361 | if (IS_GEN5(dev_priv)) | |
91c8a326 | 2362 | intel_wait_for_vblank_if_active(&dev_priv->drm, !crtc->pipe); |
6b23f3e8 | 2363 | |
0767935e | 2364 | intel_dp->DP |= DP_PLL_ENABLE; |
6fec7662 | 2365 | |
0767935e | 2366 | I915_WRITE(DP_A, intel_dp->DP); |
298b0b39 JB |
2367 | POSTING_READ(DP_A); |
2368 | udelay(200); | |
d240f20f JB |
2369 | } |
2370 | ||
2bd2ad64 | 2371 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 2372 | { |
da63a9f2 | 2373 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
64e1077a VS |
2374 | struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); |
2375 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
d240f20f | 2376 | |
64e1077a VS |
2377 | assert_pipe_disabled(dev_priv, crtc->pipe); |
2378 | assert_dp_port_disabled(intel_dp); | |
2379 | assert_edp_pll_enabled(dev_priv); | |
2bd2ad64 | 2380 | |
abfce949 VS |
2381 | DRM_DEBUG_KMS("disabling eDP PLL\n"); |
2382 | ||
6fec7662 | 2383 | intel_dp->DP &= ~DP_PLL_ENABLE; |
0767935e | 2384 | |
6fec7662 | 2385 | I915_WRITE(DP_A, intel_dp->DP); |
1af5fa1b | 2386 | POSTING_READ(DP_A); |
d240f20f JB |
2387 | udelay(200); |
2388 | } | |
2389 | ||
c7ad3810 | 2390 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 2391 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
2392 | { |
2393 | int ret, i; | |
2394 | ||
2395 | /* Should have a valid DPCD by this point */ | |
2396 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
2397 | return; | |
2398 | ||
2399 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
2400 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2401 | DP_SET_POWER_D3); | |
c7ad3810 JB |
2402 | } else { |
2403 | /* | |
2404 | * When turning on, we need to retry for 1ms to give the sink | |
2405 | * time to wake up. | |
2406 | */ | |
2407 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
2408 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
2409 | DP_SET_POWER_D0); | |
c7ad3810 JB |
2410 | if (ret == 1) |
2411 | break; | |
2412 | msleep(1); | |
2413 | } | |
2414 | } | |
f9cac721 JN |
2415 | |
2416 | if (ret != 1) | |
2417 | DRM_DEBUG_KMS("failed to %s sink power state\n", | |
2418 | mode == DRM_MODE_DPMS_ON ? "enable" : "disable"); | |
c7ad3810 JB |
2419 | } |
2420 | ||
19d8fe15 DV |
2421 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
2422 | enum pipe *pipe) | |
d240f20f | 2423 | { |
19d8fe15 | 2424 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2425 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 | 2426 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 2427 | struct drm_i915_private *dev_priv = to_i915(dev); |
6d129bea ID |
2428 | enum intel_display_power_domain power_domain; |
2429 | u32 tmp; | |
6fa9a5ec | 2430 | bool ret; |
6d129bea ID |
2431 | |
2432 | power_domain = intel_display_port_power_domain(encoder); | |
6fa9a5ec | 2433 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) |
6d129bea ID |
2434 | return false; |
2435 | ||
6fa9a5ec ID |
2436 | ret = false; |
2437 | ||
6d129bea | 2438 | tmp = I915_READ(intel_dp->output_reg); |
19d8fe15 DV |
2439 | |
2440 | if (!(tmp & DP_PORT_EN)) | |
6fa9a5ec | 2441 | goto out; |
19d8fe15 | 2442 | |
39e5fa88 | 2443 | if (IS_GEN7(dev) && port == PORT_A) { |
19d8fe15 | 2444 | *pipe = PORT_TO_PIPE_CPT(tmp); |
39e5fa88 | 2445 | } else if (HAS_PCH_CPT(dev) && port != PORT_A) { |
adc289d7 | 2446 | enum pipe p; |
19d8fe15 | 2447 | |
adc289d7 VS |
2448 | for_each_pipe(dev_priv, p) { |
2449 | u32 trans_dp = I915_READ(TRANS_DP_CTL(p)); | |
2450 | if (TRANS_DP_PIPE_TO_PORT(trans_dp) == port) { | |
2451 | *pipe = p; | |
6fa9a5ec ID |
2452 | ret = true; |
2453 | ||
2454 | goto out; | |
19d8fe15 DV |
2455 | } |
2456 | } | |
19d8fe15 | 2457 | |
4a0833ec | 2458 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
f0f59a00 | 2459 | i915_mmio_reg_offset(intel_dp->output_reg)); |
39e5fa88 VS |
2460 | } else if (IS_CHERRYVIEW(dev)) { |
2461 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
2462 | } else { | |
2463 | *pipe = PORT_TO_PIPE(tmp); | |
4a0833ec | 2464 | } |
d240f20f | 2465 | |
6fa9a5ec ID |
2466 | ret = true; |
2467 | ||
2468 | out: | |
2469 | intel_display_power_put(dev_priv, power_domain); | |
2470 | ||
2471 | return ret; | |
19d8fe15 | 2472 | } |
d240f20f | 2473 | |
045ac3b5 | 2474 | static void intel_dp_get_config(struct intel_encoder *encoder, |
5cec258b | 2475 | struct intel_crtc_state *pipe_config) |
045ac3b5 JB |
2476 | { |
2477 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 2478 | u32 tmp, flags = 0; |
63000ef6 | 2479 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 2480 | struct drm_i915_private *dev_priv = to_i915(dev); |
63000ef6 XZ |
2481 | enum port port = dp_to_dig_port(intel_dp)->port; |
2482 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
045ac3b5 | 2483 | |
9ed109a7 | 2484 | tmp = I915_READ(intel_dp->output_reg); |
9fcb1704 JN |
2485 | |
2486 | pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A; | |
9ed109a7 | 2487 | |
39e5fa88 | 2488 | if (HAS_PCH_CPT(dev) && port != PORT_A) { |
b81e34c2 VS |
2489 | u32 trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); |
2490 | ||
2491 | if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
63000ef6 XZ |
2492 | flags |= DRM_MODE_FLAG_PHSYNC; |
2493 | else | |
2494 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2495 | |
b81e34c2 | 2496 | if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
63000ef6 XZ |
2497 | flags |= DRM_MODE_FLAG_PVSYNC; |
2498 | else | |
2499 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2500 | } else { | |
39e5fa88 | 2501 | if (tmp & DP_SYNC_HS_HIGH) |
63000ef6 XZ |
2502 | flags |= DRM_MODE_FLAG_PHSYNC; |
2503 | else | |
2504 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 2505 | |
39e5fa88 | 2506 | if (tmp & DP_SYNC_VS_HIGH) |
63000ef6 XZ |
2507 | flags |= DRM_MODE_FLAG_PVSYNC; |
2508 | else | |
2509 | flags |= DRM_MODE_FLAG_NVSYNC; | |
2510 | } | |
045ac3b5 | 2511 | |
2d112de7 | 2512 | pipe_config->base.adjusted_mode.flags |= flags; |
f1f644dc | 2513 | |
8c875fca | 2514 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev) && |
666a4537 | 2515 | !IS_CHERRYVIEW(dev) && 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 | ||
7b13b58a VS |
2635 | if (HAS_DDI(dev)) { |
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 | ||
39e5fa88 VS |
2661 | } else if ((IS_GEN7(dev) && port == PORT_A) || |
2662 | (HAS_PCH_CPT(dev) && 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 { | |
2682 | if (IS_CHERRYVIEW(dev)) | |
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: | |
2698 | if (IS_CHERRYVIEW(dev)) { | |
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 ML |
2733 | static void intel_enable_dp(struct intel_encoder *encoder, |
2734 | struct intel_crtc_state *pipe_config) | |
d240f20f | 2735 | { |
e8cb4558 DV |
2736 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2737 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 2738 | struct drm_i915_private *dev_priv = to_i915(dev); |
c1dec79a | 2739 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
e8cb4558 | 2740 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); |
d6fbdd15 | 2741 | enum pipe pipe = crtc->pipe; |
5d613501 | 2742 | |
0c33d8d7 DV |
2743 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2744 | return; | |
5d613501 | 2745 | |
093e3f13 VS |
2746 | pps_lock(intel_dp); |
2747 | ||
666a4537 | 2748 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) |
093e3f13 VS |
2749 | vlv_init_panel_power_sequencer(intel_dp); |
2750 | ||
85cb48a1 | 2751 | intel_dp_enable_port(intel_dp, pipe_config); |
093e3f13 VS |
2752 | |
2753 | edp_panel_vdd_on(intel_dp); | |
2754 | edp_panel_on(intel_dp); | |
2755 | edp_panel_vdd_off(intel_dp, true); | |
2756 | ||
2757 | pps_unlock(intel_dp); | |
2758 | ||
666a4537 | 2759 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
e0fce78f VS |
2760 | unsigned int lane_mask = 0x0; |
2761 | ||
2762 | if (IS_CHERRYVIEW(dev)) | |
85cb48a1 | 2763 | lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count); |
e0fce78f | 2764 | |
9b6de0a1 VS |
2765 | vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp), |
2766 | lane_mask); | |
e0fce78f | 2767 | } |
61234fa5 | 2768 | |
f01eca2e | 2769 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2770 | intel_dp_start_link_train(intel_dp); |
3ab9c637 | 2771 | intel_dp_stop_link_train(intel_dp); |
c1dec79a | 2772 | |
85cb48a1 | 2773 | if (pipe_config->has_audio) { |
c1dec79a | 2774 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
d6fbdd15 | 2775 | pipe_name(pipe)); |
c1dec79a JN |
2776 | intel_audio_codec_enable(encoder); |
2777 | } | |
ab1f90f9 | 2778 | } |
89b667f8 | 2779 | |
fd6bbda9 ML |
2780 | static void g4x_enable_dp(struct intel_encoder *encoder, |
2781 | struct intel_crtc_state *pipe_config, | |
2782 | struct drm_connector_state *conn_state) | |
ecff4f3b | 2783 | { |
828f5c6e JN |
2784 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2785 | ||
85cb48a1 | 2786 | intel_enable_dp(encoder, pipe_config); |
4be73780 | 2787 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2788 | } |
89b667f8 | 2789 | |
fd6bbda9 ML |
2790 | static void vlv_enable_dp(struct intel_encoder *encoder, |
2791 | struct intel_crtc_state *pipe_config, | |
2792 | struct drm_connector_state *conn_state) | |
ab1f90f9 | 2793 | { |
828f5c6e JN |
2794 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2795 | ||
4be73780 | 2796 | intel_edp_backlight_on(intel_dp); |
b32c6f48 | 2797 | intel_psr_enable(intel_dp); |
d240f20f JB |
2798 | } |
2799 | ||
fd6bbda9 ML |
2800 | static void g4x_pre_enable_dp(struct intel_encoder *encoder, |
2801 | struct intel_crtc_state *pipe_config, | |
2802 | struct drm_connector_state *conn_state) | |
ab1f90f9 JN |
2803 | { |
2804 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
d6fbdd15 | 2805 | enum port port = dp_to_dig_port(intel_dp)->port; |
ab1f90f9 | 2806 | |
85cb48a1 | 2807 | intel_dp_prepare(encoder, pipe_config); |
8ac33ed3 | 2808 | |
d41f1efb | 2809 | /* Only ilk+ has port A */ |
abfce949 | 2810 | if (port == PORT_A) |
85cb48a1 | 2811 | ironlake_edp_pll_on(intel_dp, pipe_config); |
ab1f90f9 JN |
2812 | } |
2813 | ||
83b84597 VS |
2814 | static void vlv_detach_power_sequencer(struct intel_dp *intel_dp) |
2815 | { | |
2816 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
fac5e23e | 2817 | struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); |
83b84597 | 2818 | enum pipe pipe = intel_dp->pps_pipe; |
44cb734c | 2819 | i915_reg_t pp_on_reg = PP_ON_DELAYS(pipe); |
83b84597 VS |
2820 | |
2821 | edp_panel_vdd_off_sync(intel_dp); | |
2822 | ||
2823 | /* | |
2824 | * VLV seems to get confused when multiple power seqeuencers | |
2825 | * have the same port selected (even if only one has power/vdd | |
2826 | * enabled). The failure manifests as vlv_wait_port_ready() failing | |
2827 | * CHV on the other hand doesn't seem to mind having the same port | |
2828 | * selected in multiple power seqeuencers, but let's clear the | |
2829 | * port select always when logically disconnecting a power sequencer | |
2830 | * from a port. | |
2831 | */ | |
2832 | DRM_DEBUG_KMS("detaching pipe %c power sequencer from port %c\n", | |
2833 | pipe_name(pipe), port_name(intel_dig_port->port)); | |
2834 | I915_WRITE(pp_on_reg, 0); | |
2835 | POSTING_READ(pp_on_reg); | |
2836 | ||
2837 | intel_dp->pps_pipe = INVALID_PIPE; | |
2838 | } | |
2839 | ||
a4a5d2f8 VS |
2840 | static void vlv_steal_power_sequencer(struct drm_device *dev, |
2841 | enum pipe pipe) | |
2842 | { | |
fac5e23e | 2843 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 VS |
2844 | struct intel_encoder *encoder; |
2845 | ||
2846 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2847 | ||
ac3c12e4 VS |
2848 | if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) |
2849 | return; | |
2850 | ||
19c8054c | 2851 | for_each_intel_encoder(dev, encoder) { |
a4a5d2f8 | 2852 | struct intel_dp *intel_dp; |
773538e8 | 2853 | enum port port; |
a4a5d2f8 VS |
2854 | |
2855 | if (encoder->type != INTEL_OUTPUT_EDP) | |
2856 | continue; | |
2857 | ||
2858 | intel_dp = enc_to_intel_dp(&encoder->base); | |
773538e8 | 2859 | port = dp_to_dig_port(intel_dp)->port; |
a4a5d2f8 VS |
2860 | |
2861 | if (intel_dp->pps_pipe != pipe) | |
2862 | continue; | |
2863 | ||
2864 | DRM_DEBUG_KMS("stealing pipe %c power sequencer from port %c\n", | |
773538e8 | 2865 | pipe_name(pipe), port_name(port)); |
a4a5d2f8 | 2866 | |
e02f9a06 | 2867 | WARN(encoder->base.crtc, |
034e43c6 VS |
2868 | "stealing pipe %c power sequencer from active eDP port %c\n", |
2869 | pipe_name(pipe), port_name(port)); | |
a4a5d2f8 | 2870 | |
a4a5d2f8 | 2871 | /* make sure vdd is off before we steal it */ |
83b84597 | 2872 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2873 | } |
2874 | } | |
2875 | ||
2876 | static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp) | |
2877 | { | |
2878 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2879 | struct intel_encoder *encoder = &intel_dig_port->base; | |
2880 | struct drm_device *dev = encoder->base.dev; | |
fac5e23e | 2881 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4a5d2f8 | 2882 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
a4a5d2f8 VS |
2883 | |
2884 | lockdep_assert_held(&dev_priv->pps_mutex); | |
2885 | ||
093e3f13 VS |
2886 | if (!is_edp(intel_dp)) |
2887 | return; | |
2888 | ||
a4a5d2f8 VS |
2889 | if (intel_dp->pps_pipe == crtc->pipe) |
2890 | return; | |
2891 | ||
2892 | /* | |
2893 | * If another power sequencer was being used on this | |
2894 | * port previously make sure to turn off vdd there while | |
2895 | * we still have control of it. | |
2896 | */ | |
2897 | if (intel_dp->pps_pipe != INVALID_PIPE) | |
83b84597 | 2898 | vlv_detach_power_sequencer(intel_dp); |
a4a5d2f8 VS |
2899 | |
2900 | /* | |
2901 | * We may be stealing the power | |
2902 | * sequencer from another port. | |
2903 | */ | |
2904 | vlv_steal_power_sequencer(dev, crtc->pipe); | |
2905 | ||
2906 | /* now it's all ours */ | |
2907 | intel_dp->pps_pipe = crtc->pipe; | |
2908 | ||
2909 | DRM_DEBUG_KMS("initializing pipe %c power sequencer for port %c\n", | |
2910 | pipe_name(intel_dp->pps_pipe), port_name(intel_dig_port->port)); | |
2911 | ||
2912 | /* init power sequencer on this pipe and port */ | |
36b5f425 VS |
2913 | intel_dp_init_panel_power_sequencer(dev, intel_dp); |
2914 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
a4a5d2f8 VS |
2915 | } |
2916 | ||
fd6bbda9 ML |
2917 | static void vlv_pre_enable_dp(struct intel_encoder *encoder, |
2918 | struct intel_crtc_state *pipe_config, | |
2919 | struct drm_connector_state *conn_state) | |
a4fc5ed6 | 2920 | { |
5f68c275 | 2921 | vlv_phy_pre_encoder_enable(encoder); |
ab1f90f9 | 2922 | |
85cb48a1 | 2923 | intel_enable_dp(encoder, pipe_config); |
89b667f8 JB |
2924 | } |
2925 | ||
fd6bbda9 ML |
2926 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder, |
2927 | struct intel_crtc_state *pipe_config, | |
2928 | struct drm_connector_state *conn_state) | |
89b667f8 | 2929 | { |
85cb48a1 | 2930 | intel_dp_prepare(encoder, pipe_config); |
8ac33ed3 | 2931 | |
6da2e616 | 2932 | vlv_phy_pre_pll_enable(encoder); |
a4fc5ed6 KP |
2933 | } |
2934 | ||
fd6bbda9 ML |
2935 | static void chv_pre_enable_dp(struct intel_encoder *encoder, |
2936 | struct intel_crtc_state *pipe_config, | |
2937 | struct drm_connector_state *conn_state) | |
e4a1d846 | 2938 | { |
e7d2a717 | 2939 | chv_phy_pre_encoder_enable(encoder); |
e4a1d846 | 2940 | |
85cb48a1 | 2941 | intel_enable_dp(encoder, pipe_config); |
b0b33846 VS |
2942 | |
2943 | /* Second common lane will stay alive on its own now */ | |
e7d2a717 | 2944 | chv_phy_release_cl2_override(encoder); |
e4a1d846 CML |
2945 | } |
2946 | ||
fd6bbda9 ML |
2947 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder, |
2948 | struct intel_crtc_state *pipe_config, | |
2949 | struct drm_connector_state *conn_state) | |
9197c88b | 2950 | { |
85cb48a1 | 2951 | intel_dp_prepare(encoder, pipe_config); |
625695f8 | 2952 | |
419b1b7a | 2953 | chv_phy_pre_pll_enable(encoder); |
9197c88b VS |
2954 | } |
2955 | ||
fd6bbda9 ML |
2956 | static void chv_dp_post_pll_disable(struct intel_encoder *encoder, |
2957 | struct intel_crtc_state *pipe_config, | |
2958 | struct drm_connector_state *conn_state) | |
d6db995f | 2959 | { |
204970b5 | 2960 | chv_phy_post_pll_disable(encoder); |
d6db995f VS |
2961 | } |
2962 | ||
a4fc5ed6 KP |
2963 | /* |
2964 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2965 | * link status information | |
2966 | */ | |
94223d04 | 2967 | bool |
93f62dad | 2968 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2969 | { |
9f085ebb L |
2970 | return drm_dp_dpcd_read(&intel_dp->aux, DP_LANE0_1_STATUS, link_status, |
2971 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2972 | } |
2973 | ||
1100244e | 2974 | /* These are source-specific values. */ |
94223d04 | 2975 | uint8_t |
1a2eb460 | 2976 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2977 | { |
30add22d | 2978 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
fac5e23e | 2979 | struct drm_i915_private *dev_priv = to_i915(dev); |
bc7d38a4 | 2980 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2981 | |
9314726b VK |
2982 | if (IS_BROXTON(dev)) |
2983 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; | |
2984 | else if (INTEL_INFO(dev)->gen >= 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; |
666a4537 | 2988 | } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) |
bd60018a | 2989 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
bc7d38a4 | 2990 | else if (IS_GEN7(dev) && port == PORT_A) |
bd60018a | 2991 | return DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
bc7d38a4 | 2992 | else if (HAS_PCH_CPT(dev) && 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 | { | |
30add22d | 3001 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 3002 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 3003 | |
5a9d1f1a DL |
3004 | if (INTEL_INFO(dev)->gen >= 9) { |
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 | } | |
3017 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
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 | } |
666a4537 | 3029 | } else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
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 | } |
bc7d38a4 | 3041 | } else if (IS_GEN7(dev) && 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 | ||
f8896f5d DW |
3342 | if (HAS_DDI(dev)) { |
3343 | signal_levels = ddi_signal_levels(intel_dp); | |
3344 | ||
3345 | if (IS_BROXTON(dev)) | |
3346 | signal_levels = 0; | |
3347 | else | |
3348 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 | 3349 | } else if (IS_CHERRYVIEW(dev)) { |
5829975c | 3350 | signal_levels = chv_signal_levels(intel_dp); |
e2fa6fba | 3351 | } else if (IS_VALLEYVIEW(dev)) { |
5829975c | 3352 | signal_levels = vlv_signal_levels(intel_dp); |
bc7d38a4 | 3353 | } else if (IS_GEN7(dev) && port == PORT_A) { |
5829975c | 3354 | signal_levels = gen7_edp_signal_levels(train_set); |
f0a3424e | 3355 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; |
bc7d38a4 | 3356 | } else if (IS_GEN6(dev) && 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 | ||
3401 | if (!HAS_DDI(dev)) | |
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 | |
bc76e320 | 3436 | if (WARN_ON(HAS_DDI(dev))) |
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 | |
39e5fa88 VS |
3444 | if ((IS_GEN7(dev) && port == PORT_A) || |
3445 | (HAS_PCH_CPT(dev) && port != PORT_A)) { | |
e3421a18 | 3446 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
1612c8bd | 3447 | DP |= DP_LINK_TRAIN_PAT_IDLE_CPT; |
e3421a18 | 3448 | } else { |
aad3d14d VS |
3449 | if (IS_CHERRYVIEW(dev)) |
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 | */ | |
3467 | if (HAS_PCH_IBX(dev) && 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 | |
91c8a326 | 3485 | intel_wait_for_vblank_if_active(&dev_priv->drm, 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 | ||
26d61aad | 3495 | static 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 | ||
fe5a66f9 VS |
3519 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) |
3520 | dev_priv->no_aux_handshake = intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
3521 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
474d1ec4 | 3522 | |
fe5a66f9 VS |
3523 | /* Check if the panel supports PSR */ |
3524 | drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, | |
3525 | intel_dp->psr_dpcd, | |
3526 | sizeof(intel_dp->psr_dpcd)); | |
3527 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { | |
3528 | dev_priv->psr.sink_support = true; | |
3529 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); | |
3530 | } | |
86ee27b5 | 3531 | |
fe5a66f9 VS |
3532 | if (INTEL_GEN(dev_priv) >= 9 && |
3533 | (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) { | |
3534 | uint8_t frame_sync_cap; | |
3535 | ||
3536 | dev_priv->psr.sink_support = true; | |
3537 | drm_dp_dpcd_read(&intel_dp->aux, | |
3538 | DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP, | |
3539 | &frame_sync_cap, 1); | |
3540 | dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false; | |
3541 | /* PSR2 needs frame sync as well */ | |
3542 | dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync; | |
3543 | DRM_DEBUG_KMS("PSR2 %s on sink", | |
3544 | dev_priv->psr.psr2_support ? "supported" : "not supported"); | |
50003939 JN |
3545 | } |
3546 | ||
fe5a66f9 VS |
3547 | /* Read the eDP Display control capabilities registers */ |
3548 | if ((intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) && | |
3549 | drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV, | |
3550 | intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd) == | |
3551 | sizeof(intel_dp->edp_dpcd))) | |
3552 | DRM_DEBUG_KMS("EDP DPCD : %*ph\n", (int) sizeof(intel_dp->edp_dpcd), | |
3553 | intel_dp->edp_dpcd); | |
06ea66b6 | 3554 | |
fc0f8e25 | 3555 | /* Intermediate frequency support */ |
fe5a66f9 | 3556 | if (intel_dp->edp_dpcd[0] >= 0x03) { /* eDp v1.4 or higher */ |
94ca719e | 3557 | __le16 sink_rates[DP_MAX_SUPPORTED_RATES]; |
ea2d8a42 VS |
3558 | int i; |
3559 | ||
9f085ebb L |
3560 | drm_dp_dpcd_read(&intel_dp->aux, DP_SUPPORTED_LINK_RATES, |
3561 | sink_rates, sizeof(sink_rates)); | |
ea2d8a42 | 3562 | |
94ca719e VS |
3563 | for (i = 0; i < ARRAY_SIZE(sink_rates); i++) { |
3564 | int val = le16_to_cpu(sink_rates[i]); | |
ea2d8a42 VS |
3565 | |
3566 | if (val == 0) | |
3567 | break; | |
3568 | ||
af77b974 SJ |
3569 | /* Value read is in kHz while drm clock is saved in deca-kHz */ |
3570 | intel_dp->sink_rates[i] = (val * 200) / 10; | |
ea2d8a42 | 3571 | } |
94ca719e | 3572 | intel_dp->num_sink_rates = i; |
fc0f8e25 | 3573 | } |
0336400e | 3574 | |
fe5a66f9 VS |
3575 | return true; |
3576 | } | |
3577 | ||
3578 | ||
3579 | static bool | |
3580 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
3581 | { | |
3582 | if (!intel_dp_read_dpcd(intel_dp)) | |
3583 | return false; | |
3584 | ||
3585 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_COUNT, | |
3586 | &intel_dp->sink_count, 1) < 0) | |
3587 | return false; | |
3588 | ||
3589 | /* | |
3590 | * Sink count can change between short pulse hpd hence | |
3591 | * a member variable in intel_dp will track any changes | |
3592 | * between short pulse interrupts. | |
3593 | */ | |
3594 | intel_dp->sink_count = DP_GET_SINK_COUNT(intel_dp->sink_count); | |
3595 | ||
3596 | /* | |
3597 | * SINK_COUNT == 0 and DOWNSTREAM_PORT_PRESENT == 1 implies that | |
3598 | * a dongle is present but no display. Unless we require to know | |
3599 | * if a dongle is present or not, we don't need to update | |
3600 | * downstream port information. So, an early return here saves | |
3601 | * time from performing other operations which are not required. | |
3602 | */ | |
3603 | if (!is_edp(intel_dp) && !intel_dp->sink_count) | |
3604 | return false; | |
0336400e | 3605 | |
edb39244 AJ |
3606 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3607 | DP_DWN_STRM_PORT_PRESENT)) | |
3608 | return true; /* native DP sink */ | |
3609 | ||
3610 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3611 | return true; /* no per-port downstream info */ | |
3612 | ||
9f085ebb L |
3613 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3614 | intel_dp->downstream_ports, | |
3615 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3616 | return false; /* downstream port status fetch failed */ |
3617 | ||
3618 | return true; | |
92fd8fd1 KP |
3619 | } |
3620 | ||
0d198328 AJ |
3621 | static void |
3622 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3623 | { | |
3624 | u8 buf[3]; | |
3625 | ||
3626 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3627 | return; | |
3628 | ||
9f085ebb | 3629 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3630 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3631 | buf[0], buf[1], buf[2]); | |
3632 | ||
9f085ebb | 3633 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3634 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3635 | buf[0], buf[1], buf[2]); | |
3636 | } | |
3637 | ||
0e32b39c | 3638 | static bool |
c4e3170a | 3639 | intel_dp_can_mst(struct intel_dp *intel_dp) |
0e32b39c DA |
3640 | { |
3641 | u8 buf[1]; | |
3642 | ||
7cc96139 NS |
3643 | if (!i915.enable_dp_mst) |
3644 | return false; | |
3645 | ||
0e32b39c DA |
3646 | if (!intel_dp->can_mst) |
3647 | return false; | |
3648 | ||
3649 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3650 | return false; | |
3651 | ||
c4e3170a VS |
3652 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_MSTM_CAP, buf, 1) != 1) |
3653 | return false; | |
0e32b39c | 3654 | |
c4e3170a VS |
3655 | return buf[0] & DP_MST_CAP; |
3656 | } | |
3657 | ||
3658 | static void | |
3659 | intel_dp_configure_mst(struct intel_dp *intel_dp) | |
3660 | { | |
3661 | if (!i915.enable_dp_mst) | |
3662 | return; | |
3663 | ||
3664 | if (!intel_dp->can_mst) | |
3665 | return; | |
3666 | ||
3667 | intel_dp->is_mst = intel_dp_can_mst(intel_dp); | |
3668 | ||
3669 | if (intel_dp->is_mst) | |
3670 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3671 | else | |
3672 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3673 | ||
3674 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, | |
3675 | intel_dp->is_mst); | |
0e32b39c DA |
3676 | } |
3677 | ||
e5a1cab5 | 3678 | static int intel_dp_sink_crc_stop(struct intel_dp *intel_dp) |
d2e216d0 | 3679 | { |
082dcc7c | 3680 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
d72f9d91 | 3681 | struct drm_device *dev = dig_port->base.base.dev; |
082dcc7c | 3682 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
ad9dc91b | 3683 | u8 buf; |
e5a1cab5 | 3684 | int ret = 0; |
c6297843 RV |
3685 | int count = 0; |
3686 | int attempts = 10; | |
d2e216d0 | 3687 | |
082dcc7c RV |
3688 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) { |
3689 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); | |
e5a1cab5 RV |
3690 | ret = -EIO; |
3691 | goto out; | |
4373f0f2 PZ |
3692 | } |
3693 | ||
082dcc7c | 3694 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
e5a1cab5 | 3695 | buf & ~DP_TEST_SINK_START) < 0) { |
082dcc7c | 3696 | DRM_DEBUG_KMS("Sink CRC couldn't be stopped properly\n"); |
e5a1cab5 RV |
3697 | ret = -EIO; |
3698 | goto out; | |
3699 | } | |
d2e216d0 | 3700 | |
c6297843 RV |
3701 | do { |
3702 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3703 | ||
3704 | if (drm_dp_dpcd_readb(&intel_dp->aux, | |
3705 | DP_TEST_SINK_MISC, &buf) < 0) { | |
3706 | ret = -EIO; | |
3707 | goto out; | |
3708 | } | |
3709 | count = buf & DP_TEST_COUNT_MASK; | |
3710 | } while (--attempts && count); | |
3711 | ||
3712 | if (attempts == 0) { | |
dc5a9037 | 3713 | DRM_DEBUG_KMS("TIMEOUT: Sink CRC counter is not zeroed after calculation is stopped\n"); |
c6297843 RV |
3714 | ret = -ETIMEDOUT; |
3715 | } | |
3716 | ||
e5a1cab5 | 3717 | out: |
082dcc7c | 3718 | hsw_enable_ips(intel_crtc); |
e5a1cab5 | 3719 | return ret; |
082dcc7c RV |
3720 | } |
3721 | ||
3722 | static int intel_dp_sink_crc_start(struct intel_dp *intel_dp) | |
3723 | { | |
3724 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
d72f9d91 | 3725 | struct drm_device *dev = dig_port->base.base.dev; |
082dcc7c RV |
3726 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); |
3727 | u8 buf; | |
e5a1cab5 RV |
3728 | int ret; |
3729 | ||
082dcc7c RV |
3730 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0) |
3731 | return -EIO; | |
3732 | ||
3733 | if (!(buf & DP_TEST_CRC_SUPPORTED)) | |
3734 | return -ENOTTY; | |
3735 | ||
3736 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK, &buf) < 0) | |
3737 | return -EIO; | |
3738 | ||
6d8175da RV |
3739 | if (buf & DP_TEST_SINK_START) { |
3740 | ret = intel_dp_sink_crc_stop(intel_dp); | |
3741 | if (ret) | |
3742 | return ret; | |
3743 | } | |
3744 | ||
082dcc7c | 3745 | hsw_disable_ips(intel_crtc); |
1dda5f93 | 3746 | |
9d1a1031 | 3747 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
082dcc7c RV |
3748 | buf | DP_TEST_SINK_START) < 0) { |
3749 | hsw_enable_ips(intel_crtc); | |
3750 | return -EIO; | |
4373f0f2 PZ |
3751 | } |
3752 | ||
d72f9d91 | 3753 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
082dcc7c RV |
3754 | return 0; |
3755 | } | |
3756 | ||
3757 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) | |
3758 | { | |
3759 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
3760 | struct drm_device *dev = dig_port->base.base.dev; | |
3761 | struct intel_crtc *intel_crtc = to_intel_crtc(dig_port->base.base.crtc); | |
3762 | u8 buf; | |
621d4c76 | 3763 | int count, ret; |
082dcc7c | 3764 | int attempts = 6; |
082dcc7c RV |
3765 | |
3766 | ret = intel_dp_sink_crc_start(intel_dp); | |
3767 | if (ret) | |
3768 | return ret; | |
3769 | ||
ad9dc91b | 3770 | do { |
621d4c76 RV |
3771 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
3772 | ||
1dda5f93 | 3773 | if (drm_dp_dpcd_readb(&intel_dp->aux, |
4373f0f2 PZ |
3774 | DP_TEST_SINK_MISC, &buf) < 0) { |
3775 | ret = -EIO; | |
afe0d67e | 3776 | goto stop; |
4373f0f2 | 3777 | } |
621d4c76 | 3778 | count = buf & DP_TEST_COUNT_MASK; |
aabc95dc | 3779 | |
7e38eeff | 3780 | } while (--attempts && count == 0); |
ad9dc91b RV |
3781 | |
3782 | if (attempts == 0) { | |
7e38eeff RV |
3783 | DRM_ERROR("Panel is unable to calculate any CRC after 6 vblanks\n"); |
3784 | ret = -ETIMEDOUT; | |
3785 | goto stop; | |
3786 | } | |
3787 | ||
3788 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) { | |
3789 | ret = -EIO; | |
3790 | goto stop; | |
ad9dc91b | 3791 | } |
d2e216d0 | 3792 | |
afe0d67e | 3793 | stop: |
082dcc7c | 3794 | intel_dp_sink_crc_stop(intel_dp); |
4373f0f2 | 3795 | return ret; |
d2e216d0 RV |
3796 | } |
3797 | ||
a60f0e38 JB |
3798 | static bool |
3799 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3800 | { | |
9f085ebb | 3801 | return drm_dp_dpcd_read(&intel_dp->aux, |
9d1a1031 JN |
3802 | DP_DEVICE_SERVICE_IRQ_VECTOR, |
3803 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3804 | } |
3805 | ||
0e32b39c DA |
3806 | static bool |
3807 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3808 | { | |
3809 | int ret; | |
3810 | ||
9f085ebb | 3811 | ret = drm_dp_dpcd_read(&intel_dp->aux, |
0e32b39c DA |
3812 | DP_SINK_COUNT_ESI, |
3813 | sink_irq_vector, 14); | |
3814 | if (ret != 14) | |
3815 | return false; | |
3816 | ||
3817 | return true; | |
3818 | } | |
3819 | ||
c5d5ab7a TP |
3820 | static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) |
3821 | { | |
3822 | uint8_t test_result = DP_TEST_ACK; | |
3823 | return test_result; | |
3824 | } | |
3825 | ||
3826 | static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp) | |
3827 | { | |
3828 | uint8_t test_result = DP_TEST_NAK; | |
3829 | return test_result; | |
3830 | } | |
3831 | ||
3832 | static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) | |
a60f0e38 | 3833 | { |
c5d5ab7a | 3834 | uint8_t test_result = DP_TEST_NAK; |
559be30c TP |
3835 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
3836 | struct drm_connector *connector = &intel_connector->base; | |
3837 | ||
3838 | if (intel_connector->detect_edid == NULL || | |
ac6f2e29 | 3839 | connector->edid_corrupt || |
559be30c TP |
3840 | intel_dp->aux.i2c_defer_count > 6) { |
3841 | /* Check EDID read for NACKs, DEFERs and corruption | |
3842 | * (DP CTS 1.2 Core r1.1) | |
3843 | * 4.2.2.4 : Failed EDID read, I2C_NAK | |
3844 | * 4.2.2.5 : Failed EDID read, I2C_DEFER | |
3845 | * 4.2.2.6 : EDID corruption detected | |
3846 | * Use failsafe mode for all cases | |
3847 | */ | |
3848 | if (intel_dp->aux.i2c_nack_count > 0 || | |
3849 | intel_dp->aux.i2c_defer_count > 0) | |
3850 | DRM_DEBUG_KMS("EDID read had %d NACKs, %d DEFERs\n", | |
3851 | intel_dp->aux.i2c_nack_count, | |
3852 | intel_dp->aux.i2c_defer_count); | |
3853 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; | |
3854 | } else { | |
f79b468e TS |
3855 | struct edid *block = intel_connector->detect_edid; |
3856 | ||
3857 | /* We have to write the checksum | |
3858 | * of the last block read | |
3859 | */ | |
3860 | block += intel_connector->detect_edid->extensions; | |
3861 | ||
559be30c TP |
3862 | if (!drm_dp_dpcd_write(&intel_dp->aux, |
3863 | DP_TEST_EDID_CHECKSUM, | |
f79b468e | 3864 | &block->checksum, |
5a1cc655 | 3865 | 1)) |
559be30c TP |
3866 | DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |
3867 | ||
3868 | test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE; | |
3869 | intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_STANDARD; | |
3870 | } | |
3871 | ||
3872 | /* Set test active flag here so userspace doesn't interrupt things */ | |
3873 | intel_dp->compliance_test_active = 1; | |
3874 | ||
c5d5ab7a TP |
3875 | return test_result; |
3876 | } | |
3877 | ||
3878 | static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp) | |
a60f0e38 | 3879 | { |
c5d5ab7a TP |
3880 | uint8_t test_result = DP_TEST_NAK; |
3881 | return test_result; | |
3882 | } | |
3883 | ||
3884 | static void intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3885 | { | |
3886 | uint8_t response = DP_TEST_NAK; | |
3887 | uint8_t rxdata = 0; | |
3888 | int status = 0; | |
3889 | ||
c5d5ab7a TP |
3890 | status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1); |
3891 | if (status <= 0) { | |
3892 | DRM_DEBUG_KMS("Could not read test request from sink\n"); | |
3893 | goto update_status; | |
3894 | } | |
3895 | ||
3896 | switch (rxdata) { | |
3897 | case DP_TEST_LINK_TRAINING: | |
3898 | DRM_DEBUG_KMS("LINK_TRAINING test requested\n"); | |
3899 | intel_dp->compliance_test_type = DP_TEST_LINK_TRAINING; | |
3900 | response = intel_dp_autotest_link_training(intel_dp); | |
3901 | break; | |
3902 | case DP_TEST_LINK_VIDEO_PATTERN: | |
3903 | DRM_DEBUG_KMS("TEST_PATTERN test requested\n"); | |
3904 | intel_dp->compliance_test_type = DP_TEST_LINK_VIDEO_PATTERN; | |
3905 | response = intel_dp_autotest_video_pattern(intel_dp); | |
3906 | break; | |
3907 | case DP_TEST_LINK_EDID_READ: | |
3908 | DRM_DEBUG_KMS("EDID test requested\n"); | |
3909 | intel_dp->compliance_test_type = DP_TEST_LINK_EDID_READ; | |
3910 | response = intel_dp_autotest_edid(intel_dp); | |
3911 | break; | |
3912 | case DP_TEST_LINK_PHY_TEST_PATTERN: | |
3913 | DRM_DEBUG_KMS("PHY_PATTERN test requested\n"); | |
3914 | intel_dp->compliance_test_type = DP_TEST_LINK_PHY_TEST_PATTERN; | |
3915 | response = intel_dp_autotest_phy_pattern(intel_dp); | |
3916 | break; | |
3917 | default: | |
3918 | DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata); | |
3919 | break; | |
3920 | } | |
3921 | ||
3922 | update_status: | |
3923 | status = drm_dp_dpcd_write(&intel_dp->aux, | |
3924 | DP_TEST_RESPONSE, | |
3925 | &response, 1); | |
3926 | if (status <= 0) | |
3927 | DRM_DEBUG_KMS("Could not write test response to sink\n"); | |
a60f0e38 JB |
3928 | } |
3929 | ||
0e32b39c DA |
3930 | static int |
3931 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3932 | { | |
3933 | bool bret; | |
3934 | ||
3935 | if (intel_dp->is_mst) { | |
3936 | u8 esi[16] = { 0 }; | |
3937 | int ret = 0; | |
3938 | int retry; | |
3939 | bool handled; | |
3940 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3941 | go_again: | |
3942 | if (bret == true) { | |
3943 | ||
3944 | /* check link status - esi[10] = 0x200c */ | |
19e0b4ca | 3945 | if (intel_dp->active_mst_links && |
901c2daf | 3946 | !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { |
0e32b39c DA |
3947 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); |
3948 | intel_dp_start_link_train(intel_dp); | |
0e32b39c DA |
3949 | intel_dp_stop_link_train(intel_dp); |
3950 | } | |
3951 | ||
6f34cc39 | 3952 | DRM_DEBUG_KMS("got esi %3ph\n", esi); |
0e32b39c DA |
3953 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); |
3954 | ||
3955 | if (handled) { | |
3956 | for (retry = 0; retry < 3; retry++) { | |
3957 | int wret; | |
3958 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3959 | DP_SINK_COUNT_ESI+1, | |
3960 | &esi[1], 3); | |
3961 | if (wret == 3) { | |
3962 | break; | |
3963 | } | |
3964 | } | |
3965 | ||
3966 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3967 | if (bret == true) { | |
6f34cc39 | 3968 | DRM_DEBUG_KMS("got esi2 %3ph\n", esi); |
0e32b39c DA |
3969 | goto go_again; |
3970 | } | |
3971 | } else | |
3972 | ret = 0; | |
3973 | ||
3974 | return ret; | |
3975 | } else { | |
3976 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3977 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3978 | intel_dp->is_mst = false; | |
3979 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3980 | /* send a hotplug event */ | |
3981 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3982 | } | |
3983 | } | |
3984 | return -EINVAL; | |
3985 | } | |
3986 | ||
5c9114d0 SS |
3987 | static void |
3988 | intel_dp_check_link_status(struct intel_dp *intel_dp) | |
3989 | { | |
3990 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; | |
3991 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
3992 | u8 link_status[DP_LINK_STATUS_SIZE]; | |
3993 | ||
3994 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
3995 | ||
3996 | if (!intel_dp_get_link_status(intel_dp, link_status)) { | |
3997 | DRM_ERROR("Failed to get link status\n"); | |
3998 | return; | |
3999 | } | |
4000 | ||
4001 | if (!intel_encoder->base.crtc) | |
4002 | return; | |
4003 | ||
4004 | if (!to_intel_crtc(intel_encoder->base.crtc)->active) | |
4005 | return; | |
4006 | ||
4007 | /* if link training is requested we should perform it always */ | |
4008 | if ((intel_dp->compliance_test_type == DP_TEST_LINK_TRAINING) || | |
4009 | (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count))) { | |
4010 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", | |
4011 | intel_encoder->base.name); | |
4012 | intel_dp_start_link_train(intel_dp); | |
4013 | intel_dp_stop_link_train(intel_dp); | |
4014 | } | |
4015 | } | |
4016 | ||
a4fc5ed6 KP |
4017 | /* |
4018 | * According to DP spec | |
4019 | * 5.1.2: | |
4020 | * 1. Read DPCD | |
4021 | * 2. Configure link according to Receiver Capabilities | |
4022 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
4023 | * 4. Check link status on receipt of hot-plug interrupt | |
39ff747b SS |
4024 | * |
4025 | * intel_dp_short_pulse - handles short pulse interrupts | |
4026 | * when full detection is not required. | |
4027 | * Returns %true if short pulse is handled and full detection | |
4028 | * is NOT required and %false otherwise. | |
a4fc5ed6 | 4029 | */ |
39ff747b | 4030 | static bool |
5c9114d0 | 4031 | intel_dp_short_pulse(struct intel_dp *intel_dp) |
a4fc5ed6 | 4032 | { |
5b215bcf | 4033 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
65fbb4e7 | 4034 | u8 sink_irq_vector = 0; |
39ff747b SS |
4035 | u8 old_sink_count = intel_dp->sink_count; |
4036 | bool ret; | |
5b215bcf | 4037 | |
4df6960e SS |
4038 | /* |
4039 | * Clearing compliance test variables to allow capturing | |
4040 | * of values for next automated test request. | |
4041 | */ | |
4042 | intel_dp->compliance_test_active = 0; | |
4043 | intel_dp->compliance_test_type = 0; | |
4044 | intel_dp->compliance_test_data = 0; | |
4045 | ||
39ff747b SS |
4046 | /* |
4047 | * Now read the DPCD to see if it's actually running | |
4048 | * If the current value of sink count doesn't match with | |
4049 | * the value that was stored earlier or dpcd read failed | |
4050 | * we need to do full detection | |
4051 | */ | |
4052 | ret = intel_dp_get_dpcd(intel_dp); | |
4053 | ||
4054 | if ((old_sink_count != intel_dp->sink_count) || !ret) { | |
4055 | /* No need to proceed if we are going to do full detect */ | |
4056 | return false; | |
59cd09e1 JB |
4057 | } |
4058 | ||
a60f0e38 JB |
4059 | /* Try to read the source of the interrupt */ |
4060 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
65fbb4e7 VS |
4061 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector) && |
4062 | sink_irq_vector != 0) { | |
a60f0e38 | 4063 | /* Clear interrupt source */ |
9d1a1031 JN |
4064 | drm_dp_dpcd_writeb(&intel_dp->aux, |
4065 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4066 | sink_irq_vector); | |
a60f0e38 JB |
4067 | |
4068 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
09b1eb13 | 4069 | DRM_DEBUG_DRIVER("Test request in short pulse not handled\n"); |
a60f0e38 JB |
4070 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) |
4071 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4072 | } | |
4073 | ||
5c9114d0 SS |
4074 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4075 | intel_dp_check_link_status(intel_dp); | |
4076 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
39ff747b SS |
4077 | |
4078 | return true; | |
a4fc5ed6 | 4079 | } |
a4fc5ed6 | 4080 | |
caf9ab24 | 4081 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 4082 | static enum drm_connector_status |
26d61aad | 4083 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 4084 | { |
caf9ab24 | 4085 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
4086 | uint8_t type; |
4087 | ||
4088 | if (!intel_dp_get_dpcd(intel_dp)) | |
4089 | return connector_status_disconnected; | |
4090 | ||
1034ce70 SS |
4091 | if (is_edp(intel_dp)) |
4092 | return connector_status_connected; | |
4093 | ||
caf9ab24 AJ |
4094 | /* if there's no downstream port, we're done */ |
4095 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 4096 | return connector_status_connected; |
caf9ab24 AJ |
4097 | |
4098 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
4099 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
4100 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
9d1a1031 | 4101 | |
30d9aa42 SS |
4102 | return intel_dp->sink_count ? |
4103 | connector_status_connected : connector_status_disconnected; | |
caf9ab24 AJ |
4104 | } |
4105 | ||
c4e3170a VS |
4106 | if (intel_dp_can_mst(intel_dp)) |
4107 | return connector_status_connected; | |
4108 | ||
caf9ab24 | 4109 | /* If no HPD, poke DDC gently */ |
0b99836f | 4110 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 4111 | return connector_status_connected; |
caf9ab24 AJ |
4112 | |
4113 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
4114 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
4115 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
4116 | if (type == DP_DS_PORT_TYPE_VGA || | |
4117 | type == DP_DS_PORT_TYPE_NON_EDID) | |
4118 | return connector_status_unknown; | |
4119 | } else { | |
4120 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
4121 | DP_DWN_STRM_PORT_TYPE_MASK; | |
4122 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
4123 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
4124 | return connector_status_unknown; | |
4125 | } | |
caf9ab24 AJ |
4126 | |
4127 | /* Anything else is out of spec, warn and ignore */ | |
4128 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 4129 | return connector_status_disconnected; |
71ba9000 AJ |
4130 | } |
4131 | ||
d410b56d CW |
4132 | static enum drm_connector_status |
4133 | edp_detect(struct intel_dp *intel_dp) | |
4134 | { | |
4135 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
4136 | enum drm_connector_status status; | |
4137 | ||
4138 | status = intel_panel_detect(dev); | |
4139 | if (status == connector_status_unknown) | |
4140 | status = connector_status_connected; | |
4141 | ||
4142 | return status; | |
4143 | } | |
4144 | ||
b93433cc JN |
4145 | static bool ibx_digital_port_connected(struct drm_i915_private *dev_priv, |
4146 | struct intel_digital_port *port) | |
5eb08b69 | 4147 | { |
b93433cc | 4148 | u32 bit; |
01cb9ea6 | 4149 | |
0df53b77 JN |
4150 | switch (port->port) { |
4151 | case PORT_A: | |
4152 | return true; | |
4153 | case PORT_B: | |
4154 | bit = SDE_PORTB_HOTPLUG; | |
4155 | break; | |
4156 | case PORT_C: | |
4157 | bit = SDE_PORTC_HOTPLUG; | |
4158 | break; | |
4159 | case PORT_D: | |
4160 | bit = SDE_PORTD_HOTPLUG; | |
4161 | break; | |
4162 | default: | |
4163 | MISSING_CASE(port->port); | |
4164 | return false; | |
4165 | } | |
4166 | ||
4167 | return I915_READ(SDEISR) & bit; | |
4168 | } | |
4169 | ||
4170 | static bool cpt_digital_port_connected(struct drm_i915_private *dev_priv, | |
4171 | struct intel_digital_port *port) | |
4172 | { | |
4173 | u32 bit; | |
4174 | ||
4175 | switch (port->port) { | |
4176 | case PORT_A: | |
4177 | return true; | |
4178 | case PORT_B: | |
4179 | bit = SDE_PORTB_HOTPLUG_CPT; | |
4180 | break; | |
4181 | case PORT_C: | |
4182 | bit = SDE_PORTC_HOTPLUG_CPT; | |
4183 | break; | |
4184 | case PORT_D: | |
4185 | bit = SDE_PORTD_HOTPLUG_CPT; | |
4186 | break; | |
a78695d3 JN |
4187 | case PORT_E: |
4188 | bit = SDE_PORTE_HOTPLUG_SPT; | |
4189 | break; | |
0df53b77 JN |
4190 | default: |
4191 | MISSING_CASE(port->port); | |
4192 | return false; | |
b93433cc | 4193 | } |
1b469639 | 4194 | |
b93433cc | 4195 | return I915_READ(SDEISR) & bit; |
5eb08b69 ZW |
4196 | } |
4197 | ||
7e66bcf2 | 4198 | static bool g4x_digital_port_connected(struct drm_i915_private *dev_priv, |
1d245987 | 4199 | struct intel_digital_port *port) |
a4fc5ed6 | 4200 | { |
9642c81c | 4201 | u32 bit; |
5eb08b69 | 4202 | |
9642c81c JN |
4203 | switch (port->port) { |
4204 | case PORT_B: | |
4205 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
4206 | break; | |
4207 | case PORT_C: | |
4208 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
4209 | break; | |
4210 | case PORT_D: | |
4211 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
4212 | break; | |
4213 | default: | |
4214 | MISSING_CASE(port->port); | |
4215 | return false; | |
4216 | } | |
4217 | ||
4218 | return I915_READ(PORT_HOTPLUG_STAT) & bit; | |
4219 | } | |
4220 | ||
0780cd36 VS |
4221 | static bool gm45_digital_port_connected(struct drm_i915_private *dev_priv, |
4222 | struct intel_digital_port *port) | |
9642c81c JN |
4223 | { |
4224 | u32 bit; | |
4225 | ||
4226 | switch (port->port) { | |
4227 | case PORT_B: | |
0780cd36 | 4228 | bit = PORTB_HOTPLUG_LIVE_STATUS_GM45; |
9642c81c JN |
4229 | break; |
4230 | case PORT_C: | |
0780cd36 | 4231 | bit = PORTC_HOTPLUG_LIVE_STATUS_GM45; |
9642c81c JN |
4232 | break; |
4233 | case PORT_D: | |
0780cd36 | 4234 | bit = PORTD_HOTPLUG_LIVE_STATUS_GM45; |
9642c81c JN |
4235 | break; |
4236 | default: | |
4237 | MISSING_CASE(port->port); | |
4238 | return false; | |
a4fc5ed6 KP |
4239 | } |
4240 | ||
1d245987 | 4241 | return I915_READ(PORT_HOTPLUG_STAT) & bit; |
2a592bec DA |
4242 | } |
4243 | ||
e464bfde | 4244 | static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv, |
e2ec35a5 | 4245 | struct intel_digital_port *intel_dig_port) |
e464bfde | 4246 | { |
e2ec35a5 SJ |
4247 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4248 | enum port port; | |
e464bfde JN |
4249 | u32 bit; |
4250 | ||
e2ec35a5 SJ |
4251 | intel_hpd_pin_to_port(intel_encoder->hpd_pin, &port); |
4252 | switch (port) { | |
e464bfde JN |
4253 | case PORT_A: |
4254 | bit = BXT_DE_PORT_HP_DDIA; | |
4255 | break; | |
4256 | case PORT_B: | |
4257 | bit = BXT_DE_PORT_HP_DDIB; | |
4258 | break; | |
4259 | case PORT_C: | |
4260 | bit = BXT_DE_PORT_HP_DDIC; | |
4261 | break; | |
4262 | default: | |
e2ec35a5 | 4263 | MISSING_CASE(port); |
e464bfde JN |
4264 | return false; |
4265 | } | |
4266 | ||
4267 | return I915_READ(GEN8_DE_PORT_ISR) & bit; | |
4268 | } | |
4269 | ||
7e66bcf2 JN |
4270 | /* |
4271 | * intel_digital_port_connected - is the specified port connected? | |
4272 | * @dev_priv: i915 private structure | |
4273 | * @port: the port to test | |
4274 | * | |
4275 | * Return %true if @port is connected, %false otherwise. | |
4276 | */ | |
23f889bd | 4277 | static bool intel_digital_port_connected(struct drm_i915_private *dev_priv, |
7e66bcf2 JN |
4278 | struct intel_digital_port *port) |
4279 | { | |
0df53b77 | 4280 | if (HAS_PCH_IBX(dev_priv)) |
7e66bcf2 | 4281 | return ibx_digital_port_connected(dev_priv, port); |
22824fac | 4282 | else if (HAS_PCH_SPLIT(dev_priv)) |
0df53b77 | 4283 | return cpt_digital_port_connected(dev_priv, port); |
e464bfde JN |
4284 | else if (IS_BROXTON(dev_priv)) |
4285 | return bxt_digital_port_connected(dev_priv, port); | |
0780cd36 VS |
4286 | else if (IS_GM45(dev_priv)) |
4287 | return gm45_digital_port_connected(dev_priv, port); | |
7e66bcf2 JN |
4288 | else |
4289 | return g4x_digital_port_connected(dev_priv, port); | |
4290 | } | |
4291 | ||
8c241fef | 4292 | static struct edid * |
beb60608 | 4293 | intel_dp_get_edid(struct intel_dp *intel_dp) |
8c241fef | 4294 | { |
beb60608 | 4295 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
d6f24d0f | 4296 | |
9cd300e0 JN |
4297 | /* use cached edid if we have one */ |
4298 | if (intel_connector->edid) { | |
9cd300e0 JN |
4299 | /* invalid edid */ |
4300 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
4301 | return NULL; |
4302 | ||
55e9edeb | 4303 | return drm_edid_duplicate(intel_connector->edid); |
beb60608 CW |
4304 | } else |
4305 | return drm_get_edid(&intel_connector->base, | |
4306 | &intel_dp->aux.ddc); | |
4307 | } | |
8c241fef | 4308 | |
beb60608 CW |
4309 | static void |
4310 | intel_dp_set_edid(struct intel_dp *intel_dp) | |
4311 | { | |
4312 | struct intel_connector *intel_connector = intel_dp->attached_connector; | |
4313 | struct edid *edid; | |
8c241fef | 4314 | |
f21a2198 | 4315 | intel_dp_unset_edid(intel_dp); |
beb60608 CW |
4316 | edid = intel_dp_get_edid(intel_dp); |
4317 | intel_connector->detect_edid = edid; | |
4318 | ||
4319 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) | |
4320 | intel_dp->has_audio = intel_dp->force_audio == HDMI_AUDIO_ON; | |
4321 | else | |
4322 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8c241fef KP |
4323 | } |
4324 | ||
beb60608 CW |
4325 | static void |
4326 | intel_dp_unset_edid(struct intel_dp *intel_dp) | |
8c241fef | 4327 | { |
beb60608 | 4328 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
8c241fef | 4329 | |
beb60608 CW |
4330 | kfree(intel_connector->detect_edid); |
4331 | intel_connector->detect_edid = NULL; | |
9cd300e0 | 4332 | |
beb60608 CW |
4333 | intel_dp->has_audio = false; |
4334 | } | |
d6f24d0f | 4335 | |
f21a2198 SS |
4336 | static void |
4337 | intel_dp_long_pulse(struct intel_connector *intel_connector) | |
a9756bb5 | 4338 | { |
f21a2198 | 4339 | struct drm_connector *connector = &intel_connector->base; |
a9756bb5 | 4340 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
d63885da PZ |
4341 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
4342 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 4343 | struct drm_device *dev = connector->dev; |
a9756bb5 | 4344 | enum drm_connector_status status; |
671dedd2 | 4345 | enum intel_display_power_domain power_domain; |
65fbb4e7 | 4346 | u8 sink_irq_vector = 0; |
a9756bb5 | 4347 | |
25f78f58 VS |
4348 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4349 | intel_display_power_get(to_i915(dev), power_domain); | |
a9756bb5 | 4350 | |
d410b56d CW |
4351 | /* Can't disconnect eDP, but you can close the lid... */ |
4352 | if (is_edp(intel_dp)) | |
4353 | status = edp_detect(intel_dp); | |
c555a81d ACO |
4354 | else if (intel_digital_port_connected(to_i915(dev), |
4355 | dp_to_dig_port(intel_dp))) | |
4356 | status = intel_dp_detect_dpcd(intel_dp); | |
a9756bb5 | 4357 | else |
c555a81d ACO |
4358 | status = connector_status_disconnected; |
4359 | ||
4df6960e SS |
4360 | if (status != connector_status_connected) { |
4361 | intel_dp->compliance_test_active = 0; | |
4362 | intel_dp->compliance_test_type = 0; | |
4363 | intel_dp->compliance_test_data = 0; | |
4364 | ||
0e505a08 | 4365 | if (intel_dp->is_mst) { |
4366 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", | |
4367 | intel_dp->is_mst, | |
4368 | intel_dp->mst_mgr.mst_state); | |
4369 | intel_dp->is_mst = false; | |
4370 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, | |
4371 | intel_dp->is_mst); | |
4372 | } | |
4373 | ||
c8c8fb33 | 4374 | goto out; |
4df6960e | 4375 | } |
a9756bb5 | 4376 | |
f21a2198 | 4377 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
cca0502b | 4378 | intel_encoder->type = INTEL_OUTPUT_DP; |
f21a2198 | 4379 | |
fe5a66f9 VS |
4380 | DRM_DEBUG_KMS("Display Port TPS3 support: source %s, sink %s\n", |
4381 | yesno(intel_dp_source_supports_hbr2(intel_dp)), | |
4382 | yesno(drm_dp_tps3_supported(intel_dp->dpcd))); | |
4383 | ||
4384 | intel_dp_print_rates(intel_dp); | |
4385 | ||
0d198328 AJ |
4386 | intel_dp_probe_oui(intel_dp); |
4387 | ||
0e390a33 | 4388 | intel_dp_print_hw_revision(intel_dp); |
1a2724fa | 4389 | intel_dp_print_sw_revision(intel_dp); |
0e390a33 | 4390 | |
c4e3170a VS |
4391 | intel_dp_configure_mst(intel_dp); |
4392 | ||
4393 | if (intel_dp->is_mst) { | |
f21a2198 SS |
4394 | /* |
4395 | * If we are in MST mode then this connector | |
4396 | * won't appear connected or have anything | |
4397 | * with EDID on it | |
4398 | */ | |
0e32b39c DA |
4399 | status = connector_status_disconnected; |
4400 | goto out; | |
7d23e3c3 SS |
4401 | } else if (connector->status == connector_status_connected) { |
4402 | /* | |
4403 | * If display was connected already and is still connected | |
4404 | * check links status, there has been known issues of | |
4405 | * link loss triggerring long pulse!!!! | |
4406 | */ | |
4407 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
4408 | intel_dp_check_link_status(intel_dp); | |
4409 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
4410 | goto out; | |
0e32b39c DA |
4411 | } |
4412 | ||
4df6960e SS |
4413 | /* |
4414 | * Clearing NACK and defer counts to get their exact values | |
4415 | * while reading EDID which are required by Compliance tests | |
4416 | * 4.2.2.4 and 4.2.2.5 | |
4417 | */ | |
4418 | intel_dp->aux.i2c_nack_count = 0; | |
4419 | intel_dp->aux.i2c_defer_count = 0; | |
4420 | ||
beb60608 | 4421 | intel_dp_set_edid(intel_dp); |
a9756bb5 | 4422 | |
c8c8fb33 | 4423 | status = connector_status_connected; |
7d23e3c3 | 4424 | intel_dp->detect_done = true; |
c8c8fb33 | 4425 | |
09b1eb13 TP |
4426 | /* Try to read the source of the interrupt */ |
4427 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
65fbb4e7 VS |
4428 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector) && |
4429 | sink_irq_vector != 0) { | |
09b1eb13 TP |
4430 | /* Clear interrupt source */ |
4431 | drm_dp_dpcd_writeb(&intel_dp->aux, | |
4432 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
4433 | sink_irq_vector); | |
4434 | ||
4435 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
4436 | intel_dp_handle_test_request(intel_dp); | |
4437 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
4438 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
4439 | } | |
4440 | ||
c8c8fb33 | 4441 | out: |
0e505a08 | 4442 | if ((status != connector_status_connected) && |
4443 | (intel_dp->is_mst == false)) | |
f21a2198 | 4444 | intel_dp_unset_edid(intel_dp); |
7d23e3c3 | 4445 | |
25f78f58 | 4446 | intel_display_power_put(to_i915(dev), power_domain); |
f21a2198 SS |
4447 | return; |
4448 | } | |
4449 | ||
4450 | static enum drm_connector_status | |
4451 | intel_dp_detect(struct drm_connector *connector, bool force) | |
4452 | { | |
4453 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
4454 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4455 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
4456 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4457 | ||
4458 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", | |
4459 | connector->base.id, connector->name); | |
4460 | ||
4461 | if (intel_dp->is_mst) { | |
4462 | /* MST devices are disconnected from a monitor POV */ | |
4463 | intel_dp_unset_edid(intel_dp); | |
4464 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
cca0502b | 4465 | intel_encoder->type = INTEL_OUTPUT_DP; |
f21a2198 SS |
4466 | return connector_status_disconnected; |
4467 | } | |
4468 | ||
7d23e3c3 SS |
4469 | /* If full detect is not performed yet, do a full detect */ |
4470 | if (!intel_dp->detect_done) | |
4471 | intel_dp_long_pulse(intel_dp->attached_connector); | |
4472 | ||
4473 | intel_dp->detect_done = false; | |
f21a2198 | 4474 | |
1b7f2c8b | 4475 | if (is_edp(intel_dp) || intel_connector->detect_edid) |
f21a2198 SS |
4476 | return connector_status_connected; |
4477 | else | |
4478 | return connector_status_disconnected; | |
a4fc5ed6 KP |
4479 | } |
4480 | ||
beb60608 CW |
4481 | static void |
4482 | intel_dp_force(struct drm_connector *connector) | |
a4fc5ed6 | 4483 | { |
df0e9248 | 4484 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
beb60608 | 4485 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
25f78f58 | 4486 | struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); |
671dedd2 | 4487 | enum intel_display_power_domain power_domain; |
a4fc5ed6 | 4488 | |
beb60608 CW |
4489 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
4490 | connector->base.id, connector->name); | |
4491 | intel_dp_unset_edid(intel_dp); | |
a4fc5ed6 | 4492 | |
beb60608 CW |
4493 | if (connector->status != connector_status_connected) |
4494 | return; | |
671dedd2 | 4495 | |
25f78f58 VS |
4496 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
4497 | intel_display_power_get(dev_priv, power_domain); | |
beb60608 CW |
4498 | |
4499 | intel_dp_set_edid(intel_dp); | |
4500 | ||
25f78f58 | 4501 | intel_display_power_put(dev_priv, power_domain); |
beb60608 CW |
4502 | |
4503 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
cca0502b | 4504 | intel_encoder->type = INTEL_OUTPUT_DP; |
beb60608 CW |
4505 | } |
4506 | ||
4507 | static int intel_dp_get_modes(struct drm_connector *connector) | |
4508 | { | |
4509 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4510 | struct edid *edid; | |
4511 | ||
4512 | edid = intel_connector->detect_edid; | |
4513 | if (edid) { | |
4514 | int ret = intel_connector_update_modes(connector, edid); | |
4515 | if (ret) | |
4516 | return ret; | |
4517 | } | |
32f9d658 | 4518 | |
f8779fda | 4519 | /* if eDP has no EDID, fall back to fixed mode */ |
beb60608 CW |
4520 | if (is_edp(intel_attached_dp(connector)) && |
4521 | intel_connector->panel.fixed_mode) { | |
f8779fda | 4522 | struct drm_display_mode *mode; |
beb60608 CW |
4523 | |
4524 | mode = drm_mode_duplicate(connector->dev, | |
dd06f90e | 4525 | intel_connector->panel.fixed_mode); |
f8779fda | 4526 | if (mode) { |
32f9d658 ZW |
4527 | drm_mode_probed_add(connector, mode); |
4528 | return 1; | |
4529 | } | |
4530 | } | |
beb60608 | 4531 | |
32f9d658 | 4532 | return 0; |
a4fc5ed6 KP |
4533 | } |
4534 | ||
1aad7ac0 CW |
4535 | static bool |
4536 | intel_dp_detect_audio(struct drm_connector *connector) | |
4537 | { | |
1aad7ac0 | 4538 | bool has_audio = false; |
beb60608 | 4539 | struct edid *edid; |
1aad7ac0 | 4540 | |
beb60608 CW |
4541 | edid = to_intel_connector(connector)->detect_edid; |
4542 | if (edid) | |
1aad7ac0 | 4543 | has_audio = drm_detect_monitor_audio(edid); |
671dedd2 | 4544 | |
1aad7ac0 CW |
4545 | return has_audio; |
4546 | } | |
4547 | ||
f684960e CW |
4548 | static int |
4549 | intel_dp_set_property(struct drm_connector *connector, | |
4550 | struct drm_property *property, | |
4551 | uint64_t val) | |
4552 | { | |
fac5e23e | 4553 | struct drm_i915_private *dev_priv = to_i915(connector->dev); |
53b41837 | 4554 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
4555 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
4556 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
4557 | int ret; |
4558 | ||
662595df | 4559 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
4560 | if (ret) |
4561 | return ret; | |
4562 | ||
3f43c48d | 4563 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
4564 | int i = val; |
4565 | bool has_audio; | |
4566 | ||
4567 | if (i == intel_dp->force_audio) | |
f684960e CW |
4568 | return 0; |
4569 | ||
1aad7ac0 | 4570 | intel_dp->force_audio = i; |
f684960e | 4571 | |
c3e5f67b | 4572 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
4573 | has_audio = intel_dp_detect_audio(connector); |
4574 | else | |
c3e5f67b | 4575 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
4576 | |
4577 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
4578 | return 0; |
4579 | ||
1aad7ac0 | 4580 | intel_dp->has_audio = has_audio; |
f684960e CW |
4581 | goto done; |
4582 | } | |
4583 | ||
e953fd7b | 4584 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 | 4585 | bool old_auto = intel_dp->color_range_auto; |
0f2a2a75 | 4586 | bool old_range = intel_dp->limited_color_range; |
ae4edb80 | 4587 | |
55bc60db VS |
4588 | switch (val) { |
4589 | case INTEL_BROADCAST_RGB_AUTO: | |
4590 | intel_dp->color_range_auto = true; | |
4591 | break; | |
4592 | case INTEL_BROADCAST_RGB_FULL: | |
4593 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4594 | intel_dp->limited_color_range = false; |
55bc60db VS |
4595 | break; |
4596 | case INTEL_BROADCAST_RGB_LIMITED: | |
4597 | intel_dp->color_range_auto = false; | |
0f2a2a75 | 4598 | intel_dp->limited_color_range = true; |
55bc60db VS |
4599 | break; |
4600 | default: | |
4601 | return -EINVAL; | |
4602 | } | |
ae4edb80 DV |
4603 | |
4604 | if (old_auto == intel_dp->color_range_auto && | |
0f2a2a75 | 4605 | old_range == intel_dp->limited_color_range) |
ae4edb80 DV |
4606 | return 0; |
4607 | ||
e953fd7b CW |
4608 | goto done; |
4609 | } | |
4610 | ||
53b41837 YN |
4611 | if (is_edp(intel_dp) && |
4612 | property == connector->dev->mode_config.scaling_mode_property) { | |
4613 | if (val == DRM_MODE_SCALE_NONE) { | |
4614 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
4615 | return -EINVAL; | |
4616 | } | |
234126c6 VS |
4617 | if (HAS_GMCH_DISPLAY(dev_priv) && |
4618 | val == DRM_MODE_SCALE_CENTER) { | |
4619 | DRM_DEBUG_KMS("centering not supported\n"); | |
4620 | return -EINVAL; | |
4621 | } | |
53b41837 YN |
4622 | |
4623 | if (intel_connector->panel.fitting_mode == val) { | |
4624 | /* the eDP scaling property is not changed */ | |
4625 | return 0; | |
4626 | } | |
4627 | intel_connector->panel.fitting_mode = val; | |
4628 | ||
4629 | goto done; | |
4630 | } | |
4631 | ||
f684960e CW |
4632 | return -EINVAL; |
4633 | ||
4634 | done: | |
c0c36b94 CW |
4635 | if (intel_encoder->base.crtc) |
4636 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
4637 | |
4638 | return 0; | |
4639 | } | |
4640 | ||
7a418e34 CW |
4641 | static int |
4642 | intel_dp_connector_register(struct drm_connector *connector) | |
4643 | { | |
4644 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
1ebaa0b9 CW |
4645 | int ret; |
4646 | ||
4647 | ret = intel_connector_register(connector); | |
4648 | if (ret) | |
4649 | return ret; | |
7a418e34 CW |
4650 | |
4651 | i915_debugfs_connector_add(connector); | |
4652 | ||
4653 | DRM_DEBUG_KMS("registering %s bus for %s\n", | |
4654 | intel_dp->aux.name, connector->kdev->kobj.name); | |
4655 | ||
4656 | intel_dp->aux.dev = connector->kdev; | |
4657 | return drm_dp_aux_register(&intel_dp->aux); | |
4658 | } | |
4659 | ||
c191eca1 CW |
4660 | static void |
4661 | intel_dp_connector_unregister(struct drm_connector *connector) | |
4662 | { | |
4663 | drm_dp_aux_unregister(&intel_attached_dp(connector)->aux); | |
4664 | intel_connector_unregister(connector); | |
4665 | } | |
4666 | ||
a4fc5ed6 | 4667 | static void |
73845adf | 4668 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 4669 | { |
1d508706 | 4670 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 4671 | |
10e972d3 | 4672 | kfree(intel_connector->detect_edid); |
beb60608 | 4673 | |
9cd300e0 JN |
4674 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
4675 | kfree(intel_connector->edid); | |
4676 | ||
acd8db10 PZ |
4677 | /* Can't call is_edp() since the encoder may have been destroyed |
4678 | * already. */ | |
4679 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 4680 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 4681 | |
a4fc5ed6 | 4682 | drm_connector_cleanup(connector); |
55f78c43 | 4683 | kfree(connector); |
a4fc5ed6 KP |
4684 | } |
4685 | ||
00c09d70 | 4686 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 4687 | { |
da63a9f2 PZ |
4688 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
4689 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
24d05927 | 4690 | |
0e32b39c | 4691 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
bd943159 KP |
4692 | if (is_edp(intel_dp)) { |
4693 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
951468f3 VS |
4694 | /* |
4695 | * vdd might still be enabled do to the delayed vdd off. | |
4696 | * Make sure vdd is actually turned off here. | |
4697 | */ | |
773538e8 | 4698 | pps_lock(intel_dp); |
4be73780 | 4699 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 VS |
4700 | pps_unlock(intel_dp); |
4701 | ||
01527b31 CT |
4702 | if (intel_dp->edp_notifier.notifier_call) { |
4703 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
4704 | intel_dp->edp_notifier.notifier_call = NULL; | |
4705 | } | |
bd943159 | 4706 | } |
99681886 CW |
4707 | |
4708 | intel_dp_aux_fini(intel_dp); | |
4709 | ||
c8bd0e49 | 4710 | drm_encoder_cleanup(encoder); |
da63a9f2 | 4711 | kfree(intel_dig_port); |
24d05927 DV |
4712 | } |
4713 | ||
bf93ba67 | 4714 | void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder) |
07f9cd0b ID |
4715 | { |
4716 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4717 | ||
4718 | if (!is_edp(intel_dp)) | |
4719 | return; | |
4720 | ||
951468f3 VS |
4721 | /* |
4722 | * vdd might still be enabled do to the delayed vdd off. | |
4723 | * Make sure vdd is actually turned off here. | |
4724 | */ | |
afa4e53a | 4725 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
773538e8 | 4726 | pps_lock(intel_dp); |
07f9cd0b | 4727 | edp_panel_vdd_off_sync(intel_dp); |
773538e8 | 4728 | pps_unlock(intel_dp); |
07f9cd0b ID |
4729 | } |
4730 | ||
49e6bc51 VS |
4731 | static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) |
4732 | { | |
4733 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
4734 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
fac5e23e | 4735 | struct drm_i915_private *dev_priv = to_i915(dev); |
49e6bc51 VS |
4736 | enum intel_display_power_domain power_domain; |
4737 | ||
4738 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4739 | ||
4740 | if (!edp_have_panel_vdd(intel_dp)) | |
4741 | return; | |
4742 | ||
4743 | /* | |
4744 | * The VDD bit needs a power domain reference, so if the bit is | |
4745 | * already enabled when we boot or resume, grab this reference and | |
4746 | * schedule a vdd off, so we don't hold on to the reference | |
4747 | * indefinitely. | |
4748 | */ | |
4749 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
25f78f58 | 4750 | power_domain = intel_display_port_aux_power_domain(&intel_dig_port->base); |
49e6bc51 VS |
4751 | intel_display_power_get(dev_priv, power_domain); |
4752 | ||
4753 | edp_panel_vdd_schedule_off(intel_dp); | |
4754 | } | |
4755 | ||
bf93ba67 | 4756 | void intel_dp_encoder_reset(struct drm_encoder *encoder) |
6d93c0c4 | 4757 | { |
64989ca4 VS |
4758 | struct drm_i915_private *dev_priv = to_i915(encoder->dev); |
4759 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
4760 | ||
4761 | if (!HAS_DDI(dev_priv)) | |
4762 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
49e6bc51 VS |
4763 | |
4764 | if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) | |
4765 | return; | |
4766 | ||
49e6bc51 VS |
4767 | pps_lock(intel_dp); |
4768 | ||
335f752b ID |
4769 | /* Reinit the power sequencer, in case BIOS did something with it. */ |
4770 | intel_dp_pps_init(encoder->dev, intel_dp); | |
49e6bc51 VS |
4771 | intel_edp_panel_vdd_sanitize(intel_dp); |
4772 | ||
4773 | pps_unlock(intel_dp); | |
6d93c0c4 ID |
4774 | } |
4775 | ||
a4fc5ed6 | 4776 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
4d688a2a | 4777 | .dpms = drm_atomic_helper_connector_dpms, |
a4fc5ed6 | 4778 | .detect = intel_dp_detect, |
beb60608 | 4779 | .force = intel_dp_force, |
a4fc5ed6 | 4780 | .fill_modes = drm_helper_probe_single_connector_modes, |
f684960e | 4781 | .set_property = intel_dp_set_property, |
2545e4a6 | 4782 | .atomic_get_property = intel_connector_atomic_get_property, |
7a418e34 | 4783 | .late_register = intel_dp_connector_register, |
c191eca1 | 4784 | .early_unregister = intel_dp_connector_unregister, |
73845adf | 4785 | .destroy = intel_dp_connector_destroy, |
c6f95f27 | 4786 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 4787 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
a4fc5ed6 KP |
4788 | }; |
4789 | ||
4790 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4791 | .get_modes = intel_dp_get_modes, | |
4792 | .mode_valid = intel_dp_mode_valid, | |
a4fc5ed6 KP |
4793 | }; |
4794 | ||
a4fc5ed6 | 4795 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4796 | .reset = intel_dp_encoder_reset, |
24d05927 | 4797 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4798 | }; |
4799 | ||
b2c5c181 | 4800 | enum irqreturn |
13cf5504 DA |
4801 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) |
4802 | { | |
4803 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
1c767b33 | 4804 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
0e32b39c | 4805 | struct drm_device *dev = intel_dig_port->base.base.dev; |
fac5e23e | 4806 | struct drm_i915_private *dev_priv = to_i915(dev); |
1c767b33 | 4807 | enum intel_display_power_domain power_domain; |
b2c5c181 | 4808 | enum irqreturn ret = IRQ_NONE; |
1c767b33 | 4809 | |
2540058f TI |
4810 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP && |
4811 | intel_dig_port->base.type != INTEL_OUTPUT_HDMI) | |
cca0502b | 4812 | intel_dig_port->base.type = INTEL_OUTPUT_DP; |
13cf5504 | 4813 | |
7a7f84cc VS |
4814 | if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) { |
4815 | /* | |
4816 | * vdd off can generate a long pulse on eDP which | |
4817 | * would require vdd on to handle it, and thus we | |
4818 | * would end up in an endless cycle of | |
4819 | * "vdd off -> long hpd -> vdd on -> detect -> vdd off -> ..." | |
4820 | */ | |
4821 | DRM_DEBUG_KMS("ignoring long hpd on eDP port %c\n", | |
4822 | port_name(intel_dig_port->port)); | |
a8b3d52f | 4823 | return IRQ_HANDLED; |
7a7f84cc VS |
4824 | } |
4825 | ||
26fbb774 VS |
4826 | DRM_DEBUG_KMS("got hpd irq on port %c - %s\n", |
4827 | port_name(intel_dig_port->port), | |
0e32b39c | 4828 | long_hpd ? "long" : "short"); |
13cf5504 | 4829 | |
27d4efc5 VS |
4830 | if (long_hpd) { |
4831 | intel_dp->detect_done = false; | |
4832 | return IRQ_NONE; | |
4833 | } | |
4834 | ||
25f78f58 | 4835 | power_domain = intel_display_port_aux_power_domain(intel_encoder); |
1c767b33 ID |
4836 | intel_display_power_get(dev_priv, power_domain); |
4837 | ||
27d4efc5 VS |
4838 | if (intel_dp->is_mst) { |
4839 | if (intel_dp_check_mst_status(intel_dp) == -EINVAL) { | |
4840 | /* | |
4841 | * If we were in MST mode, and device is not | |
4842 | * there, get out of MST mode | |
4843 | */ | |
4844 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", | |
4845 | intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4846 | intel_dp->is_mst = false; | |
4847 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, | |
4848 | intel_dp->is_mst); | |
4849 | intel_dp->detect_done = false; | |
4850 | goto put_power; | |
0e32b39c | 4851 | } |
27d4efc5 | 4852 | } |
0e32b39c | 4853 | |
27d4efc5 VS |
4854 | if (!intel_dp->is_mst) { |
4855 | if (!intel_dp_short_pulse(intel_dp)) { | |
4856 | intel_dp->detect_done = false; | |
4857 | goto put_power; | |
39ff747b | 4858 | } |
0e32b39c | 4859 | } |
b2c5c181 DV |
4860 | |
4861 | ret = IRQ_HANDLED; | |
4862 | ||
1c767b33 ID |
4863 | put_power: |
4864 | intel_display_power_put(dev_priv, power_domain); | |
4865 | ||
4866 | return ret; | |
13cf5504 DA |
4867 | } |
4868 | ||
477ec328 | 4869 | /* check the VBT to see whether the eDP is on another port */ |
5d8a7752 | 4870 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 | 4871 | { |
fac5e23e | 4872 | struct drm_i915_private *dev_priv = to_i915(dev); |
36e83a18 | 4873 | |
53ce81a7 VS |
4874 | /* |
4875 | * eDP not supported on g4x. so bail out early just | |
4876 | * for a bit extra safety in case the VBT is bonkers. | |
4877 | */ | |
4878 | if (INTEL_INFO(dev)->gen < 5) | |
4879 | return false; | |
4880 | ||
3b32a35b VS |
4881 | if (port == PORT_A) |
4882 | return true; | |
4883 | ||
951d9efe | 4884 | return intel_bios_is_port_edp(dev_priv, port); |
36e83a18 ZY |
4885 | } |
4886 | ||
0e32b39c | 4887 | void |
f684960e CW |
4888 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4889 | { | |
53b41837 YN |
4890 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4891 | ||
3f43c48d | 4892 | intel_attach_force_audio_property(connector); |
e953fd7b | 4893 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4894 | intel_dp->color_range_auto = true; |
53b41837 YN |
4895 | |
4896 | if (is_edp(intel_dp)) { | |
4897 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4898 | drm_object_attach_property( |
4899 | &connector->base, | |
53b41837 | 4900 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4901 | DRM_MODE_SCALE_ASPECT); |
4902 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4903 | } |
f684960e CW |
4904 | } |
4905 | ||
dada1a9f ID |
4906 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4907 | { | |
d28d4731 | 4908 | intel_dp->panel_power_off_time = ktime_get_boottime(); |
dada1a9f ID |
4909 | intel_dp->last_power_on = jiffies; |
4910 | intel_dp->last_backlight_off = jiffies; | |
4911 | } | |
4912 | ||
67a54566 | 4913 | static void |
54648618 ID |
4914 | intel_pps_readout_hw_state(struct drm_i915_private *dev_priv, |
4915 | struct intel_dp *intel_dp, struct edp_power_seq *seq) | |
67a54566 | 4916 | { |
b0a08bec | 4917 | u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; |
8e8232d5 | 4918 | struct pps_registers regs; |
453c5420 | 4919 | |
8e8232d5 | 4920 | intel_pps_get_registers(dev_priv, intel_dp, ®s); |
67a54566 DV |
4921 | |
4922 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4923 | * the very first thing. */ | |
b0a08bec | 4924 | pp_ctl = ironlake_get_pp_control(intel_dp); |
67a54566 | 4925 | |
8e8232d5 ID |
4926 | pp_on = I915_READ(regs.pp_on); |
4927 | pp_off = I915_READ(regs.pp_off); | |
54648618 | 4928 | if (!IS_BROXTON(dev_priv)) { |
8e8232d5 ID |
4929 | I915_WRITE(regs.pp_ctrl, pp_ctl); |
4930 | pp_div = I915_READ(regs.pp_div); | |
b0a08bec | 4931 | } |
67a54566 DV |
4932 | |
4933 | /* Pull timing values out of registers */ | |
54648618 ID |
4934 | seq->t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> |
4935 | PANEL_POWER_UP_DELAY_SHIFT; | |
67a54566 | 4936 | |
54648618 ID |
4937 | seq->t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> |
4938 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
67a54566 | 4939 | |
54648618 ID |
4940 | seq->t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> |
4941 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
67a54566 | 4942 | |
54648618 ID |
4943 | seq->t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> |
4944 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
67a54566 | 4945 | |
54648618 | 4946 | if (IS_BROXTON(dev_priv)) { |
b0a08bec VK |
4947 | u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> |
4948 | BXT_POWER_CYCLE_DELAY_SHIFT; | |
4949 | if (tmp > 0) | |
54648618 | 4950 | seq->t11_t12 = (tmp - 1) * 1000; |
b0a08bec | 4951 | else |
54648618 | 4952 | seq->t11_t12 = 0; |
b0a08bec | 4953 | } else { |
54648618 | 4954 | seq->t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> |
67a54566 | 4955 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; |
b0a08bec | 4956 | } |
54648618 ID |
4957 | } |
4958 | ||
de9c1b6b ID |
4959 | static void |
4960 | intel_pps_dump_state(const char *state_name, const struct edp_power_seq *seq) | |
4961 | { | |
4962 | DRM_DEBUG_KMS("%s t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4963 | state_name, | |
4964 | seq->t1_t3, seq->t8, seq->t9, seq->t10, seq->t11_t12); | |
4965 | } | |
4966 | ||
4967 | static void | |
4968 | intel_pps_verify_state(struct drm_i915_private *dev_priv, | |
4969 | struct intel_dp *intel_dp) | |
4970 | { | |
4971 | struct edp_power_seq hw; | |
4972 | struct edp_power_seq *sw = &intel_dp->pps_delays; | |
4973 | ||
4974 | intel_pps_readout_hw_state(dev_priv, intel_dp, &hw); | |
4975 | ||
4976 | if (hw.t1_t3 != sw->t1_t3 || hw.t8 != sw->t8 || hw.t9 != sw->t9 || | |
4977 | hw.t10 != sw->t10 || hw.t11_t12 != sw->t11_t12) { | |
4978 | DRM_ERROR("PPS state mismatch\n"); | |
4979 | intel_pps_dump_state("sw", sw); | |
4980 | intel_pps_dump_state("hw", &hw); | |
4981 | } | |
4982 | } | |
4983 | ||
54648618 ID |
4984 | static void |
4985 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
4986 | struct intel_dp *intel_dp) | |
4987 | { | |
fac5e23e | 4988 | struct drm_i915_private *dev_priv = to_i915(dev); |
54648618 ID |
4989 | struct edp_power_seq cur, vbt, spec, |
4990 | *final = &intel_dp->pps_delays; | |
4991 | ||
4992 | lockdep_assert_held(&dev_priv->pps_mutex); | |
4993 | ||
4994 | /* already initialized? */ | |
4995 | if (final->t11_t12 != 0) | |
4996 | return; | |
4997 | ||
4998 | intel_pps_readout_hw_state(dev_priv, intel_dp, &cur); | |
67a54566 | 4999 | |
de9c1b6b | 5000 | intel_pps_dump_state("cur", &cur); |
67a54566 | 5001 | |
6aa23e65 | 5002 | vbt = dev_priv->vbt.edp.pps; |
67a54566 DV |
5003 | |
5004 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
5005 | * our hw here, which are all in 100usec. */ | |
5006 | spec.t1_t3 = 210 * 10; | |
5007 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
5008 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
5009 | spec.t10 = 500 * 10; | |
5010 | /* This one is special and actually in units of 100ms, but zero | |
5011 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
5012 | * table multiplies it with 1000 to make it in units of 100usec, | |
5013 | * too. */ | |
5014 | spec.t11_t12 = (510 + 100) * 10; | |
5015 | ||
de9c1b6b | 5016 | intel_pps_dump_state("vbt", &vbt); |
67a54566 DV |
5017 | |
5018 | /* Use the max of the register settings and vbt. If both are | |
5019 | * unset, fall back to the spec limits. */ | |
36b5f425 | 5020 | #define assign_final(field) final->field = (max(cur.field, vbt.field) == 0 ? \ |
67a54566 DV |
5021 | spec.field : \ |
5022 | max(cur.field, vbt.field)) | |
5023 | assign_final(t1_t3); | |
5024 | assign_final(t8); | |
5025 | assign_final(t9); | |
5026 | assign_final(t10); | |
5027 | assign_final(t11_t12); | |
5028 | #undef assign_final | |
5029 | ||
36b5f425 | 5030 | #define get_delay(field) (DIV_ROUND_UP(final->field, 10)) |
67a54566 DV |
5031 | intel_dp->panel_power_up_delay = get_delay(t1_t3); |
5032 | intel_dp->backlight_on_delay = get_delay(t8); | |
5033 | intel_dp->backlight_off_delay = get_delay(t9); | |
5034 | intel_dp->panel_power_down_delay = get_delay(t10); | |
5035 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
5036 | #undef get_delay | |
5037 | ||
f30d26e4 JN |
5038 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
5039 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
5040 | intel_dp->panel_power_cycle_delay); | |
5041 | ||
5042 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
5043 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
de9c1b6b ID |
5044 | |
5045 | /* | |
5046 | * We override the HW backlight delays to 1 because we do manual waits | |
5047 | * on them. For T8, even BSpec recommends doing it. For T9, if we | |
5048 | * don't do this, we'll end up waiting for the backlight off delay | |
5049 | * twice: once when we do the manual sleep, and once when we disable | |
5050 | * the panel and wait for the PP_STATUS bit to become zero. | |
5051 | */ | |
5052 | final->t8 = 1; | |
5053 | final->t9 = 1; | |
f30d26e4 JN |
5054 | } |
5055 | ||
5056 | static void | |
5057 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
36b5f425 | 5058 | struct intel_dp *intel_dp) |
f30d26e4 | 5059 | { |
fac5e23e | 5060 | struct drm_i915_private *dev_priv = to_i915(dev); |
453c5420 | 5061 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
e7dc33f3 | 5062 | int div = dev_priv->rawclk_freq / 1000; |
8e8232d5 | 5063 | struct pps_registers regs; |
ad933b56 | 5064 | enum port port = dp_to_dig_port(intel_dp)->port; |
36b5f425 | 5065 | const struct edp_power_seq *seq = &intel_dp->pps_delays; |
453c5420 | 5066 | |
e39b999a | 5067 | lockdep_assert_held(&dev_priv->pps_mutex); |
453c5420 | 5068 | |
8e8232d5 | 5069 | intel_pps_get_registers(dev_priv, intel_dp, ®s); |
453c5420 | 5070 | |
f30d26e4 | 5071 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
de9c1b6b ID |
5072 | (seq->t8 << PANEL_LIGHT_ON_DELAY_SHIFT); |
5073 | pp_off = (seq->t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 5074 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
5075 | /* Compute the divisor for the pp clock, simply match the Bspec |
5076 | * formula. */ | |
b0a08bec | 5077 | if (IS_BROXTON(dev)) { |
8e8232d5 | 5078 | pp_div = I915_READ(regs.pp_ctrl); |
b0a08bec VK |
5079 | pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; |
5080 | pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) | |
5081 | << BXT_POWER_CYCLE_DELAY_SHIFT); | |
5082 | } else { | |
5083 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; | |
5084 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) | |
5085 | << PANEL_POWER_CYCLE_DELAY_SHIFT); | |
5086 | } | |
67a54566 DV |
5087 | |
5088 | /* Haswell doesn't have any port selection bits for the panel | |
5089 | * power sequencer any more. */ | |
666a4537 | 5090 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
ad933b56 | 5091 | port_sel = PANEL_PORT_SELECT_VLV(port); |
bc7d38a4 | 5092 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
ad933b56 | 5093 | if (port == PORT_A) |
a24c144c | 5094 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 5095 | else |
a24c144c | 5096 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
5097 | } |
5098 | ||
453c5420 JB |
5099 | pp_on |= port_sel; |
5100 | ||
8e8232d5 ID |
5101 | I915_WRITE(regs.pp_on, pp_on); |
5102 | I915_WRITE(regs.pp_off, pp_off); | |
b0a08bec | 5103 | if (IS_BROXTON(dev)) |
8e8232d5 | 5104 | I915_WRITE(regs.pp_ctrl, pp_div); |
b0a08bec | 5105 | else |
8e8232d5 | 5106 | I915_WRITE(regs.pp_div, pp_div); |
67a54566 | 5107 | |
67a54566 | 5108 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
8e8232d5 ID |
5109 | I915_READ(regs.pp_on), |
5110 | I915_READ(regs.pp_off), | |
b0a08bec | 5111 | IS_BROXTON(dev) ? |
8e8232d5 ID |
5112 | (I915_READ(regs.pp_ctrl) & BXT_POWER_CYCLE_DELAY_MASK) : |
5113 | I915_READ(regs.pp_div)); | |
f684960e CW |
5114 | } |
5115 | ||
335f752b ID |
5116 | static void intel_dp_pps_init(struct drm_device *dev, |
5117 | struct intel_dp *intel_dp) | |
5118 | { | |
5119 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { | |
5120 | vlv_initial_power_sequencer_setup(intel_dp); | |
5121 | } else { | |
5122 | intel_dp_init_panel_power_sequencer(dev, intel_dp); | |
5123 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); | |
5124 | } | |
5125 | } | |
5126 | ||
b33a2815 VK |
5127 | /** |
5128 | * intel_dp_set_drrs_state - program registers for RR switch to take effect | |
5423adf1 | 5129 | * @dev_priv: i915 device |
e896402c | 5130 | * @crtc_state: a pointer to the active intel_crtc_state |
b33a2815 VK |
5131 | * @refresh_rate: RR to be programmed |
5132 | * | |
5133 | * This function gets called when refresh rate (RR) has to be changed from | |
5134 | * one frequency to another. Switches can be between high and low RR | |
5135 | * supported by the panel or to any other RR based on media playback (in | |
5136 | * this case, RR value needs to be passed from user space). | |
5137 | * | |
5138 | * The caller of this function needs to take a lock on dev_priv->drrs. | |
5139 | */ | |
85cb48a1 ML |
5140 | static void intel_dp_set_drrs_state(struct drm_i915_private *dev_priv, |
5141 | struct intel_crtc_state *crtc_state, | |
5142 | int refresh_rate) | |
439d7ac0 | 5143 | { |
439d7ac0 | 5144 | struct intel_encoder *encoder; |
96178eeb VK |
5145 | struct intel_digital_port *dig_port = NULL; |
5146 | struct intel_dp *intel_dp = dev_priv->drrs.dp; | |
85cb48a1 | 5147 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc); |
96178eeb | 5148 | enum drrs_refresh_rate_type index = DRRS_HIGH_RR; |
439d7ac0 PB |
5149 | |
5150 | if (refresh_rate <= 0) { | |
5151 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
5152 | return; | |
5153 | } | |
5154 | ||
96178eeb VK |
5155 | if (intel_dp == NULL) { |
5156 | DRM_DEBUG_KMS("DRRS not supported.\n"); | |
439d7ac0 PB |
5157 | return; |
5158 | } | |
5159 | ||
1fcc9d1c | 5160 | /* |
e4d59f6b RV |
5161 | * FIXME: This needs proper synchronization with psr state for some |
5162 | * platforms that cannot have PSR and DRRS enabled at the same time. | |
1fcc9d1c | 5163 | */ |
439d7ac0 | 5164 | |
96178eeb VK |
5165 | dig_port = dp_to_dig_port(intel_dp); |
5166 | encoder = &dig_port->base; | |
723f9aab | 5167 | intel_crtc = to_intel_crtc(encoder->base.crtc); |
439d7ac0 PB |
5168 | |
5169 | if (!intel_crtc) { | |
5170 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
5171 | return; | |
5172 | } | |
5173 | ||
96178eeb | 5174 | if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) { |
439d7ac0 PB |
5175 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); |
5176 | return; | |
5177 | } | |
5178 | ||
96178eeb VK |
5179 | if (intel_dp->attached_connector->panel.downclock_mode->vrefresh == |
5180 | refresh_rate) | |
439d7ac0 PB |
5181 | index = DRRS_LOW_RR; |
5182 | ||
96178eeb | 5183 | if (index == dev_priv->drrs.refresh_rate_type) { |
439d7ac0 PB |
5184 | DRM_DEBUG_KMS( |
5185 | "DRRS requested for previously set RR...ignoring\n"); | |
5186 | return; | |
5187 | } | |
5188 | ||
85cb48a1 | 5189 | if (!crtc_state->base.active) { |
439d7ac0 PB |
5190 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); |
5191 | return; | |
5192 | } | |
5193 | ||
85cb48a1 | 5194 | if (INTEL_GEN(dev_priv) >= 8 && !IS_CHERRYVIEW(dev_priv)) { |
a4c30b1d VK |
5195 | switch (index) { |
5196 | case DRRS_HIGH_RR: | |
5197 | intel_dp_set_m_n(intel_crtc, M1_N1); | |
5198 | break; | |
5199 | case DRRS_LOW_RR: | |
5200 | intel_dp_set_m_n(intel_crtc, M2_N2); | |
5201 | break; | |
5202 | case DRRS_MAX_RR: | |
5203 | default: | |
5204 | DRM_ERROR("Unsupported refreshrate type\n"); | |
5205 | } | |
85cb48a1 ML |
5206 | } else if (INTEL_GEN(dev_priv) > 6) { |
5207 | i915_reg_t reg = PIPECONF(crtc_state->cpu_transcoder); | |
649636ef | 5208 | u32 val; |
a4c30b1d | 5209 | |
649636ef | 5210 | val = I915_READ(reg); |
439d7ac0 | 5211 | if (index > DRRS_HIGH_RR) { |
85cb48a1 | 5212 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
6fa7aec1 VK |
5213 | val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
5214 | else | |
5215 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 | 5216 | } else { |
85cb48a1 | 5217 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
6fa7aec1 VK |
5218 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV; |
5219 | else | |
5220 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
439d7ac0 PB |
5221 | } |
5222 | I915_WRITE(reg, val); | |
5223 | } | |
5224 | ||
4e9ac947 VK |
5225 | dev_priv->drrs.refresh_rate_type = index; |
5226 | ||
5227 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
5228 | } | |
5229 | ||
b33a2815 VK |
5230 | /** |
5231 | * intel_edp_drrs_enable - init drrs struct if supported | |
5232 | * @intel_dp: DP struct | |
5423adf1 | 5233 | * @crtc_state: A pointer to the active crtc state. |
b33a2815 VK |
5234 | * |
5235 | * Initializes frontbuffer_bits and drrs.dp | |
5236 | */ | |
85cb48a1 ML |
5237 | void intel_edp_drrs_enable(struct intel_dp *intel_dp, |
5238 | struct intel_crtc_state *crtc_state) | |
c395578e VK |
5239 | { |
5240 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 5241 | struct drm_i915_private *dev_priv = to_i915(dev); |
c395578e | 5242 | |
85cb48a1 | 5243 | if (!crtc_state->has_drrs) { |
c395578e VK |
5244 | DRM_DEBUG_KMS("Panel doesn't support DRRS\n"); |
5245 | return; | |
5246 | } | |
5247 | ||
5248 | mutex_lock(&dev_priv->drrs.mutex); | |
5249 | if (WARN_ON(dev_priv->drrs.dp)) { | |
5250 | DRM_ERROR("DRRS already enabled\n"); | |
5251 | goto unlock; | |
5252 | } | |
5253 | ||
5254 | dev_priv->drrs.busy_frontbuffer_bits = 0; | |
5255 | ||
5256 | dev_priv->drrs.dp = intel_dp; | |
5257 | ||
5258 | unlock: | |
5259 | mutex_unlock(&dev_priv->drrs.mutex); | |
5260 | } | |
5261 | ||
b33a2815 VK |
5262 | /** |
5263 | * intel_edp_drrs_disable - Disable DRRS | |
5264 | * @intel_dp: DP struct | |
5423adf1 | 5265 | * @old_crtc_state: Pointer to old crtc_state. |
b33a2815 VK |
5266 | * |
5267 | */ | |
85cb48a1 ML |
5268 | void intel_edp_drrs_disable(struct intel_dp *intel_dp, |
5269 | struct intel_crtc_state *old_crtc_state) | |
c395578e VK |
5270 | { |
5271 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
fac5e23e | 5272 | struct drm_i915_private *dev_priv = to_i915(dev); |
c395578e | 5273 | |
85cb48a1 | 5274 | if (!old_crtc_state->has_drrs) |
c395578e VK |
5275 | return; |
5276 | ||
5277 | mutex_lock(&dev_priv->drrs.mutex); | |
5278 | if (!dev_priv->drrs.dp) { | |
5279 | mutex_unlock(&dev_priv->drrs.mutex); | |
5280 | return; | |
5281 | } | |
5282 | ||
5283 | if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) | |
85cb48a1 ML |
5284 | intel_dp_set_drrs_state(dev_priv, old_crtc_state, |
5285 | intel_dp->attached_connector->panel.fixed_mode->vrefresh); | |
c395578e VK |
5286 | |
5287 | dev_priv->drrs.dp = NULL; | |
5288 | mutex_unlock(&dev_priv->drrs.mutex); | |
5289 | ||
5290 | cancel_delayed_work_sync(&dev_priv->drrs.work); | |
5291 | } | |
5292 | ||
4e9ac947 VK |
5293 | static void intel_edp_drrs_downclock_work(struct work_struct *work) |
5294 | { | |
5295 | struct drm_i915_private *dev_priv = | |
5296 | container_of(work, typeof(*dev_priv), drrs.work.work); | |
5297 | struct intel_dp *intel_dp; | |
5298 | ||
5299 | mutex_lock(&dev_priv->drrs.mutex); | |
5300 | ||
5301 | intel_dp = dev_priv->drrs.dp; | |
5302 | ||
5303 | if (!intel_dp) | |
5304 | goto unlock; | |
5305 | ||
439d7ac0 | 5306 | /* |
4e9ac947 VK |
5307 | * The delayed work can race with an invalidate hence we need to |
5308 | * recheck. | |
439d7ac0 PB |
5309 | */ |
5310 | ||
4e9ac947 VK |
5311 | if (dev_priv->drrs.busy_frontbuffer_bits) |
5312 | goto unlock; | |
439d7ac0 | 5313 | |
85cb48a1 ML |
5314 | if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR) { |
5315 | struct drm_crtc *crtc = dp_to_dig_port(intel_dp)->base.base.crtc; | |
5316 | ||
5317 | intel_dp_set_drrs_state(dev_priv, to_intel_crtc(crtc)->config, | |
5318 | intel_dp->attached_connector->panel.downclock_mode->vrefresh); | |
5319 | } | |
439d7ac0 | 5320 | |
4e9ac947 | 5321 | unlock: |
4e9ac947 | 5322 | mutex_unlock(&dev_priv->drrs.mutex); |
439d7ac0 PB |
5323 | } |
5324 | ||
b33a2815 | 5325 | /** |
0ddfd203 | 5326 | * intel_edp_drrs_invalidate - Disable Idleness DRRS |
5748b6a1 | 5327 | * @dev_priv: i915 device |
b33a2815 VK |
5328 | * @frontbuffer_bits: frontbuffer plane tracking bits |
5329 | * | |
0ddfd203 R |
5330 | * This function gets called everytime rendering on the given planes start. |
5331 | * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR). | |
b33a2815 VK |
5332 | * |
5333 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5334 | */ | |
5748b6a1 CW |
5335 | void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv, |
5336 | unsigned int frontbuffer_bits) | |
a93fad0f | 5337 | { |
a93fad0f VK |
5338 | struct drm_crtc *crtc; |
5339 | enum pipe pipe; | |
5340 | ||
9da7d693 | 5341 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5342 | return; |
5343 | ||
88f933a8 | 5344 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5345 | |
a93fad0f | 5346 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5347 | if (!dev_priv->drrs.dp) { |
5348 | mutex_unlock(&dev_priv->drrs.mutex); | |
5349 | return; | |
5350 | } | |
5351 | ||
a93fad0f VK |
5352 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5353 | pipe = to_intel_crtc(crtc)->pipe; | |
5354 | ||
c1d038c6 DV |
5355 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); |
5356 | dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits; | |
5357 | ||
0ddfd203 | 5358 | /* invalidate means busy screen hence upclock */ |
c1d038c6 | 5359 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
85cb48a1 ML |
5360 | intel_dp_set_drrs_state(dev_priv, to_intel_crtc(crtc)->config, |
5361 | dev_priv->drrs.dp->attached_connector->panel.fixed_mode->vrefresh); | |
a93fad0f | 5362 | |
a93fad0f VK |
5363 | mutex_unlock(&dev_priv->drrs.mutex); |
5364 | } | |
5365 | ||
b33a2815 | 5366 | /** |
0ddfd203 | 5367 | * intel_edp_drrs_flush - Restart Idleness DRRS |
5748b6a1 | 5368 | * @dev_priv: i915 device |
b33a2815 VK |
5369 | * @frontbuffer_bits: frontbuffer plane tracking bits |
5370 | * | |
0ddfd203 R |
5371 | * This function gets called every time rendering on the given planes has |
5372 | * completed or flip on a crtc is completed. So DRRS should be upclocked | |
5373 | * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again, | |
5374 | * if no other planes are dirty. | |
b33a2815 VK |
5375 | * |
5376 | * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits. | |
5377 | */ | |
5748b6a1 CW |
5378 | void intel_edp_drrs_flush(struct drm_i915_private *dev_priv, |
5379 | unsigned int frontbuffer_bits) | |
a93fad0f | 5380 | { |
a93fad0f VK |
5381 | struct drm_crtc *crtc; |
5382 | enum pipe pipe; | |
5383 | ||
9da7d693 | 5384 | if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED) |
a93fad0f VK |
5385 | return; |
5386 | ||
88f933a8 | 5387 | cancel_delayed_work(&dev_priv->drrs.work); |
3954e733 | 5388 | |
a93fad0f | 5389 | mutex_lock(&dev_priv->drrs.mutex); |
9da7d693 DV |
5390 | if (!dev_priv->drrs.dp) { |
5391 | mutex_unlock(&dev_priv->drrs.mutex); | |
5392 | return; | |
5393 | } | |
5394 | ||
a93fad0f VK |
5395 | crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc; |
5396 | pipe = to_intel_crtc(crtc)->pipe; | |
c1d038c6 DV |
5397 | |
5398 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
a93fad0f VK |
5399 | dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits; |
5400 | ||
0ddfd203 | 5401 | /* flush means busy screen hence upclock */ |
c1d038c6 | 5402 | if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) |
85cb48a1 ML |
5403 | intel_dp_set_drrs_state(dev_priv, to_intel_crtc(crtc)->config, |
5404 | dev_priv->drrs.dp->attached_connector->panel.fixed_mode->vrefresh); | |
0ddfd203 R |
5405 | |
5406 | /* | |
5407 | * flush also means no more activity hence schedule downclock, if all | |
5408 | * other fbs are quiescent too | |
5409 | */ | |
5410 | if (!dev_priv->drrs.busy_frontbuffer_bits) | |
a93fad0f VK |
5411 | schedule_delayed_work(&dev_priv->drrs.work, |
5412 | msecs_to_jiffies(1000)); | |
5413 | mutex_unlock(&dev_priv->drrs.mutex); | |
5414 | } | |
5415 | ||
b33a2815 VK |
5416 | /** |
5417 | * DOC: Display Refresh Rate Switching (DRRS) | |
5418 | * | |
5419 | * Display Refresh Rate Switching (DRRS) is a power conservation feature | |
5420 | * which enables swtching between low and high refresh rates, | |
5421 | * dynamically, based on the usage scenario. This feature is applicable | |
5422 | * for internal panels. | |
5423 | * | |
5424 | * Indication that the panel supports DRRS is given by the panel EDID, which | |
5425 | * would list multiple refresh rates for one resolution. | |
5426 | * | |
5427 | * DRRS is of 2 types - static and seamless. | |
5428 | * Static DRRS involves changing refresh rate (RR) by doing a full modeset | |
5429 | * (may appear as a blink on screen) and is used in dock-undock scenario. | |
5430 | * Seamless DRRS involves changing RR without any visual effect to the user | |
5431 | * and can be used during normal system usage. This is done by programming | |
5432 | * certain registers. | |
5433 | * | |
5434 | * Support for static/seamless DRRS may be indicated in the VBT based on | |
5435 | * inputs from the panel spec. | |
5436 | * | |
5437 | * DRRS saves power by switching to low RR based on usage scenarios. | |
5438 | * | |
2e7a5701 DV |
5439 | * The implementation is based on frontbuffer tracking implementation. When |
5440 | * there is a disturbance on the screen triggered by user activity or a periodic | |
5441 | * system activity, DRRS is disabled (RR is changed to high RR). When there is | |
5442 | * no movement on screen, after a timeout of 1 second, a switch to low RR is | |
5443 | * made. | |
5444 | * | |
5445 | * For integration with frontbuffer tracking code, intel_edp_drrs_invalidate() | |
5446 | * and intel_edp_drrs_flush() are called. | |
b33a2815 VK |
5447 | * |
5448 | * DRRS can be further extended to support other internal panels and also | |
5449 | * the scenario of video playback wherein RR is set based on the rate | |
5450 | * requested by userspace. | |
5451 | */ | |
5452 | ||
5453 | /** | |
5454 | * intel_dp_drrs_init - Init basic DRRS work and mutex. | |
5455 | * @intel_connector: eDP connector | |
5456 | * @fixed_mode: preferred mode of panel | |
5457 | * | |
5458 | * This function is called only once at driver load to initialize basic | |
5459 | * DRRS stuff. | |
5460 | * | |
5461 | * Returns: | |
5462 | * Downclock mode if panel supports it, else return NULL. | |
5463 | * DRRS support is determined by the presence of downclock mode (apart | |
5464 | * from VBT setting). | |
5465 | */ | |
4f9db5b5 | 5466 | static struct drm_display_mode * |
96178eeb VK |
5467 | intel_dp_drrs_init(struct intel_connector *intel_connector, |
5468 | struct drm_display_mode *fixed_mode) | |
4f9db5b5 PB |
5469 | { |
5470 | struct drm_connector *connector = &intel_connector->base; | |
96178eeb | 5471 | struct drm_device *dev = connector->dev; |
fac5e23e | 5472 | struct drm_i915_private *dev_priv = to_i915(dev); |
4f9db5b5 PB |
5473 | struct drm_display_mode *downclock_mode = NULL; |
5474 | ||
9da7d693 DV |
5475 | INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work); |
5476 | mutex_init(&dev_priv->drrs.mutex); | |
5477 | ||
4f9db5b5 PB |
5478 | if (INTEL_INFO(dev)->gen <= 6) { |
5479 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
5480 | return NULL; | |
5481 | } | |
5482 | ||
5483 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4079b8d1 | 5484 | DRM_DEBUG_KMS("VBT doesn't support DRRS\n"); |
4f9db5b5 PB |
5485 | return NULL; |
5486 | } | |
5487 | ||
5488 | downclock_mode = intel_find_panel_downclock | |
5489 | (dev, fixed_mode, connector); | |
5490 | ||
5491 | if (!downclock_mode) { | |
a1d26342 | 5492 | DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n"); |
4f9db5b5 PB |
5493 | return NULL; |
5494 | } | |
5495 | ||
96178eeb | 5496 | dev_priv->drrs.type = dev_priv->vbt.drrs_type; |
4f9db5b5 | 5497 | |
96178eeb | 5498 | dev_priv->drrs.refresh_rate_type = DRRS_HIGH_RR; |
4079b8d1 | 5499 | DRM_DEBUG_KMS("seamless DRRS supported for eDP panel.\n"); |
4f9db5b5 PB |
5500 | return downclock_mode; |
5501 | } | |
5502 | ||
ed92f0b2 | 5503 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
36b5f425 | 5504 | struct intel_connector *intel_connector) |
ed92f0b2 PZ |
5505 | { |
5506 | struct drm_connector *connector = &intel_connector->base; | |
5507 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
5508 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
5509 | struct drm_device *dev = intel_encoder->base.dev; | |
fac5e23e | 5510 | struct drm_i915_private *dev_priv = to_i915(dev); |
ed92f0b2 | 5511 | struct drm_display_mode *fixed_mode = NULL; |
4f9db5b5 | 5512 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
5513 | bool has_dpcd; |
5514 | struct drm_display_mode *scan; | |
5515 | struct edid *edid; | |
6517d273 | 5516 | enum pipe pipe = INVALID_PIPE; |
ed92f0b2 PZ |
5517 | |
5518 | if (!is_edp(intel_dp)) | |
5519 | return true; | |
5520 | ||
97a824e1 ID |
5521 | /* |
5522 | * On IBX/CPT we may get here with LVDS already registered. Since the | |
5523 | * driver uses the only internal power sequencer available for both | |
5524 | * eDP and LVDS bail out early in this case to prevent interfering | |
5525 | * with an already powered-on LVDS power sequencer. | |
5526 | */ | |
5527 | if (intel_get_lvds_encoder(dev)) { | |
5528 | WARN_ON(!(HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))); | |
5529 | DRM_INFO("LVDS was detected, not registering eDP\n"); | |
5530 | ||
5531 | return false; | |
5532 | } | |
5533 | ||
49e6bc51 | 5534 | pps_lock(intel_dp); |
b4d06ede ID |
5535 | |
5536 | intel_dp_init_panel_power_timestamps(intel_dp); | |
335f752b | 5537 | intel_dp_pps_init(dev, intel_dp); |
49e6bc51 | 5538 | intel_edp_panel_vdd_sanitize(intel_dp); |
b4d06ede | 5539 | |
49e6bc51 | 5540 | pps_unlock(intel_dp); |
63635217 | 5541 | |
ed92f0b2 | 5542 | /* Cache DPCD and EDID for edp. */ |
fe5a66f9 | 5543 | has_dpcd = intel_edp_init_dpcd(intel_dp); |
ed92f0b2 | 5544 | |
fe5a66f9 | 5545 | if (!has_dpcd) { |
ed92f0b2 PZ |
5546 | /* if this fails, presume the device is a ghost */ |
5547 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
b4d06ede | 5548 | goto out_vdd_off; |
ed92f0b2 PZ |
5549 | } |
5550 | ||
060c8778 | 5551 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 5552 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
5553 | if (edid) { |
5554 | if (drm_add_edid_modes(connector, edid)) { | |
5555 | drm_mode_connector_update_edid_property(connector, | |
5556 | edid); | |
5557 | drm_edid_to_eld(connector, edid); | |
5558 | } else { | |
5559 | kfree(edid); | |
5560 | edid = ERR_PTR(-EINVAL); | |
5561 | } | |
5562 | } else { | |
5563 | edid = ERR_PTR(-ENOENT); | |
5564 | } | |
5565 | intel_connector->edid = edid; | |
5566 | ||
5567 | /* prefer fixed mode from EDID if available */ | |
5568 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
5569 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
5570 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 | 5571 | downclock_mode = intel_dp_drrs_init( |
4f9db5b5 | 5572 | intel_connector, fixed_mode); |
ed92f0b2 PZ |
5573 | break; |
5574 | } | |
5575 | } | |
5576 | ||
5577 | /* fallback to VBT if available for eDP */ | |
5578 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
5579 | fixed_mode = drm_mode_duplicate(dev, | |
5580 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
df457245 | 5581 | if (fixed_mode) { |
ed92f0b2 | 5582 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; |
df457245 VS |
5583 | connector->display_info.width_mm = fixed_mode->width_mm; |
5584 | connector->display_info.height_mm = fixed_mode->height_mm; | |
5585 | } | |
ed92f0b2 | 5586 | } |
060c8778 | 5587 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 5588 | |
666a4537 | 5589 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
01527b31 CT |
5590 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; |
5591 | register_reboot_notifier(&intel_dp->edp_notifier); | |
6517d273 VS |
5592 | |
5593 | /* | |
5594 | * Figure out the current pipe for the initial backlight setup. | |
5595 | * If the current pipe isn't valid, try the PPS pipe, and if that | |
5596 | * fails just assume pipe A. | |
5597 | */ | |
5598 | if (IS_CHERRYVIEW(dev)) | |
5599 | pipe = DP_PORT_TO_PIPE_CHV(intel_dp->DP); | |
5600 | else | |
5601 | pipe = PORT_TO_PIPE(intel_dp->DP); | |
5602 | ||
5603 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5604 | pipe = intel_dp->pps_pipe; | |
5605 | ||
5606 | if (pipe != PIPE_A && pipe != PIPE_B) | |
5607 | pipe = PIPE_A; | |
5608 | ||
5609 | DRM_DEBUG_KMS("using pipe %c for initial backlight setup\n", | |
5610 | pipe_name(pipe)); | |
01527b31 CT |
5611 | } |
5612 | ||
4f9db5b5 | 5613 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
5507faeb | 5614 | intel_connector->panel.backlight.power = intel_edp_backlight_power; |
6517d273 | 5615 | intel_panel_setup_backlight(connector, pipe); |
ed92f0b2 PZ |
5616 | |
5617 | return true; | |
b4d06ede ID |
5618 | |
5619 | out_vdd_off: | |
5620 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
5621 | /* | |
5622 | * vdd might still be enabled do to the delayed vdd off. | |
5623 | * Make sure vdd is actually turned off here. | |
5624 | */ | |
5625 | pps_lock(intel_dp); | |
5626 | edp_panel_vdd_off_sync(intel_dp); | |
5627 | pps_unlock(intel_dp); | |
5628 | ||
5629 | return false; | |
ed92f0b2 PZ |
5630 | } |
5631 | ||
16c25533 | 5632 | bool |
f0fec3f2 PZ |
5633 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
5634 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 5635 | { |
f0fec3f2 PZ |
5636 | struct drm_connector *connector = &intel_connector->base; |
5637 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
5638 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5639 | struct drm_device *dev = intel_encoder->base.dev; | |
fac5e23e | 5640 | struct drm_i915_private *dev_priv = to_i915(dev); |
174edf1f | 5641 | enum port port = intel_dig_port->port; |
7a418e34 | 5642 | int type; |
a4fc5ed6 | 5643 | |
ccb1a831 VS |
5644 | if (WARN(intel_dig_port->max_lanes < 1, |
5645 | "Not enough lanes (%d) for DP on port %c\n", | |
5646 | intel_dig_port->max_lanes, port_name(port))) | |
5647 | return false; | |
5648 | ||
a4a5d2f8 VS |
5649 | intel_dp->pps_pipe = INVALID_PIPE; |
5650 | ||
ec5b01dd | 5651 | /* intel_dp vfuncs */ |
b6b5e383 DL |
5652 | if (INTEL_INFO(dev)->gen >= 9) |
5653 | intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; | |
ec5b01dd DL |
5654 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
5655 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
5656 | else if (HAS_PCH_SPLIT(dev)) | |
5657 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
5658 | else | |
6ffb1be7 | 5659 | intel_dp->get_aux_clock_divider = g4x_get_aux_clock_divider; |
ec5b01dd | 5660 | |
b9ca5fad DL |
5661 | if (INTEL_INFO(dev)->gen >= 9) |
5662 | intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl; | |
5663 | else | |
6ffb1be7 | 5664 | intel_dp->get_aux_send_ctl = g4x_get_aux_send_ctl; |
153b1100 | 5665 | |
ad64217b ACO |
5666 | if (HAS_DDI(dev)) |
5667 | intel_dp->prepare_link_retrain = intel_ddi_prepare_link_retrain; | |
5668 | ||
0767935e DV |
5669 | /* Preserve the current hw state. */ |
5670 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 5671 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 5672 | |
3b32a35b | 5673 | if (intel_dp_is_edp(dev, port)) |
b329530c | 5674 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
5675 | else |
5676 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 5677 | |
f7d24902 ID |
5678 | /* |
5679 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
5680 | * for DP the encoder type can be set by the caller to | |
5681 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
5682 | */ | |
5683 | if (type == DRM_MODE_CONNECTOR_eDP) | |
5684 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
5685 | ||
c17ed5b5 | 5686 | /* eDP only on port B and/or C on vlv/chv */ |
666a4537 WB |
5687 | if (WARN_ON((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) && |
5688 | is_edp(intel_dp) && port != PORT_B && port != PORT_C)) | |
c17ed5b5 VS |
5689 | return false; |
5690 | ||
e7281eab ID |
5691 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
5692 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
5693 | port_name(port)); | |
5694 | ||
b329530c | 5695 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
5696 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
5697 | ||
a4fc5ed6 KP |
5698 | connector->interlace_allowed = true; |
5699 | connector->doublescan_allowed = 0; | |
5700 | ||
b6339585 | 5701 | intel_dp_aux_init(intel_dp); |
7a418e34 | 5702 | |
f0fec3f2 | 5703 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 5704 | edp_panel_vdd_work); |
a4fc5ed6 | 5705 | |
df0e9248 | 5706 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 | 5707 | |
affa9354 | 5708 | if (HAS_DDI(dev)) |
bcbc889b PZ |
5709 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
5710 | else | |
5711 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
5712 | ||
0b99836f | 5713 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
5714 | switch (port) { |
5715 | case PORT_A: | |
1d843f9d | 5716 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5717 | break; |
5718 | case PORT_B: | |
1d843f9d | 5719 | intel_encoder->hpd_pin = HPD_PORT_B; |
e87a005d | 5720 | if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) |
cf1d5883 | 5721 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
5722 | break; |
5723 | case PORT_C: | |
1d843f9d | 5724 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
5725 | break; |
5726 | case PORT_D: | |
1d843f9d | 5727 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 | 5728 | break; |
26951caf XZ |
5729 | case PORT_E: |
5730 | intel_encoder->hpd_pin = HPD_PORT_E; | |
5731 | break; | |
ab9d7c30 | 5732 | default: |
ad1c0b19 | 5733 | BUG(); |
5eb08b69 ZW |
5734 | } |
5735 | ||
0e32b39c | 5736 | /* init MST on ports that can support it */ |
f8e58ddf | 5737 | if (HAS_DP_MST(dev) && !is_edp(intel_dp) && |
0c9b3715 JN |
5738 | (port == PORT_B || port == PORT_C || port == PORT_D)) |
5739 | intel_dp_mst_encoder_init(intel_dig_port, | |
5740 | intel_connector->base.base.id); | |
0e32b39c | 5741 | |
36b5f425 | 5742 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
a121f4e5 VS |
5743 | intel_dp_aux_fini(intel_dp); |
5744 | intel_dp_mst_encoder_cleanup(intel_dig_port); | |
5745 | goto fail; | |
b2f246a8 | 5746 | } |
32f9d658 | 5747 | |
f684960e CW |
5748 | intel_dp_add_properties(intel_dp, connector); |
5749 | ||
a4fc5ed6 KP |
5750 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
5751 | * 0xd. Failure to do so will result in spurious interrupts being | |
5752 | * generated on the port when a cable is not attached. | |
5753 | */ | |
5754 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
5755 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
5756 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
5757 | } | |
16c25533 PZ |
5758 | |
5759 | return true; | |
a121f4e5 VS |
5760 | |
5761 | fail: | |
a121f4e5 VS |
5762 | drm_connector_cleanup(connector); |
5763 | ||
5764 | return false; | |
a4fc5ed6 | 5765 | } |
f0fec3f2 | 5766 | |
457c52d8 CW |
5767 | bool intel_dp_init(struct drm_device *dev, |
5768 | i915_reg_t output_reg, | |
5769 | enum port port) | |
f0fec3f2 | 5770 | { |
fac5e23e | 5771 | struct drm_i915_private *dev_priv = to_i915(dev); |
f0fec3f2 PZ |
5772 | struct intel_digital_port *intel_dig_port; |
5773 | struct intel_encoder *intel_encoder; | |
5774 | struct drm_encoder *encoder; | |
5775 | struct intel_connector *intel_connector; | |
5776 | ||
b14c5679 | 5777 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 | 5778 | if (!intel_dig_port) |
457c52d8 | 5779 | return false; |
f0fec3f2 | 5780 | |
08d9bc92 | 5781 | intel_connector = intel_connector_alloc(); |
11aee0f6 SM |
5782 | if (!intel_connector) |
5783 | goto err_connector_alloc; | |
f0fec3f2 PZ |
5784 | |
5785 | intel_encoder = &intel_dig_port->base; | |
5786 | encoder = &intel_encoder->base; | |
5787 | ||
893da0c9 | 5788 | if (drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, |
580d8ed5 | 5789 | DRM_MODE_ENCODER_TMDS, "DP %c", port_name(port))) |
893da0c9 | 5790 | goto err_encoder_init; |
f0fec3f2 | 5791 | |
5bfe2ac0 | 5792 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 5793 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 5794 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 5795 | intel_encoder->get_config = intel_dp_get_config; |
07f9cd0b | 5796 | intel_encoder->suspend = intel_dp_encoder_suspend; |
e4a1d846 | 5797 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 5798 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
5799 | intel_encoder->pre_enable = chv_pre_enable_dp; |
5800 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 5801 | intel_encoder->post_disable = chv_post_disable_dp; |
d6db995f | 5802 | intel_encoder->post_pll_disable = chv_dp_post_pll_disable; |
e4a1d846 | 5803 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 5804 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
5805 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
5806 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 5807 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 5808 | } else { |
ecff4f3b JN |
5809 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
5810 | intel_encoder->enable = g4x_enable_dp; | |
08aff3fe VS |
5811 | if (INTEL_INFO(dev)->gen >= 5) |
5812 | intel_encoder->post_disable = ilk_post_disable_dp; | |
ab1f90f9 | 5813 | } |
f0fec3f2 | 5814 | |
174edf1f | 5815 | intel_dig_port->port = port; |
f0fec3f2 | 5816 | intel_dig_port->dp.output_reg = output_reg; |
ccb1a831 | 5817 | intel_dig_port->max_lanes = 4; |
f0fec3f2 | 5818 | |
cca0502b | 5819 | intel_encoder->type = INTEL_OUTPUT_DP; |
882ec384 VS |
5820 | if (IS_CHERRYVIEW(dev)) { |
5821 | if (port == PORT_D) | |
5822 | intel_encoder->crtc_mask = 1 << 2; | |
5823 | else | |
5824 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
5825 | } else { | |
5826 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
5827 | } | |
bc079e8b | 5828 | intel_encoder->cloneable = 0; |
03cdc1d4 | 5829 | intel_encoder->port = port; |
f0fec3f2 | 5830 | |
13cf5504 | 5831 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
5fcece80 | 5832 | dev_priv->hotplug.irq_port[port] = intel_dig_port; |
13cf5504 | 5833 | |
11aee0f6 SM |
5834 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) |
5835 | goto err_init_connector; | |
5836 | ||
457c52d8 | 5837 | return true; |
11aee0f6 SM |
5838 | |
5839 | err_init_connector: | |
5840 | drm_encoder_cleanup(encoder); | |
893da0c9 | 5841 | err_encoder_init: |
11aee0f6 SM |
5842 | kfree(intel_connector); |
5843 | err_connector_alloc: | |
5844 | kfree(intel_dig_port); | |
457c52d8 | 5845 | return false; |
f0fec3f2 | 5846 | } |
0e32b39c DA |
5847 | |
5848 | void intel_dp_mst_suspend(struct drm_device *dev) | |
5849 | { | |
fac5e23e | 5850 | struct drm_i915_private *dev_priv = to_i915(dev); |
0e32b39c DA |
5851 | int i; |
5852 | ||
5853 | /* disable MST */ | |
5854 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 5855 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
5aa56969 VS |
5856 | |
5857 | if (!intel_dig_port || !intel_dig_port->dp.can_mst) | |
0e32b39c DA |
5858 | continue; |
5859 | ||
5aa56969 VS |
5860 | if (intel_dig_port->dp.is_mst) |
5861 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
0e32b39c DA |
5862 | } |
5863 | } | |
5864 | ||
5865 | void intel_dp_mst_resume(struct drm_device *dev) | |
5866 | { | |
fac5e23e | 5867 | struct drm_i915_private *dev_priv = to_i915(dev); |
0e32b39c DA |
5868 | int i; |
5869 | ||
5870 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
5fcece80 | 5871 | struct intel_digital_port *intel_dig_port = dev_priv->hotplug.irq_port[i]; |
5aa56969 | 5872 | int ret; |
0e32b39c | 5873 | |
5aa56969 VS |
5874 | if (!intel_dig_port || !intel_dig_port->dp.can_mst) |
5875 | continue; | |
0e32b39c | 5876 | |
5aa56969 VS |
5877 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); |
5878 | if (ret) | |
5879 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
0e32b39c DA |
5880 | } |
5881 | } |