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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> |
760285e7 DH |
31 | #include <drm/drmP.h> |
32 | #include <drm/drm_crtc.h> | |
33 | #include <drm/drm_crtc_helper.h> | |
34 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 35 | #include "intel_drv.h" |
760285e7 | 36 | #include <drm/i915_drm.h> |
a4fc5ed6 | 37 | #include "i915_drv.h" |
a4fc5ed6 | 38 | |
a4fc5ed6 KP |
39 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
40 | ||
9dd4ffdf CML |
41 | struct dp_link_dpll { |
42 | int link_bw; | |
43 | struct dpll dpll; | |
44 | }; | |
45 | ||
46 | static const struct dp_link_dpll gen4_dpll[] = { | |
47 | { DP_LINK_BW_1_62, | |
48 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
49 | { DP_LINK_BW_2_7, | |
50 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
51 | }; | |
52 | ||
53 | static const struct dp_link_dpll pch_dpll[] = { | |
54 | { DP_LINK_BW_1_62, | |
55 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
56 | { DP_LINK_BW_2_7, | |
57 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
58 | }; | |
59 | ||
65ce4bf5 CML |
60 | static const struct dp_link_dpll vlv_dpll[] = { |
61 | { DP_LINK_BW_1_62, | |
58f6e632 | 62 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
63 | { DP_LINK_BW_2_7, |
64 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
65 | }; | |
66 | ||
ef9348c8 CML |
67 | /* |
68 | * CHV supports eDP 1.4 that have more link rates. | |
69 | * Below only provides the fixed rate but exclude variable rate. | |
70 | */ | |
71 | static const struct dp_link_dpll chv_dpll[] = { | |
72 | /* | |
73 | * CHV requires to program fractional division for m2. | |
74 | * m2 is stored in fixed point format using formula below | |
75 | * (m2_int << 22) | m2_fraction | |
76 | */ | |
77 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
78 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
79 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
80 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
81 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
82 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
83 | }; | |
84 | ||
cfcb0fc9 JB |
85 | /** |
86 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
87 | * @intel_dp: DP struct | |
88 | * | |
89 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
90 | * will return true, and false otherwise. | |
91 | */ | |
92 | static bool is_edp(struct intel_dp *intel_dp) | |
93 | { | |
da63a9f2 PZ |
94 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
95 | ||
96 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
97 | } |
98 | ||
68b4d824 | 99 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 100 | { |
68b4d824 ID |
101 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
102 | ||
103 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
104 | } |
105 | ||
df0e9248 CW |
106 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
107 | { | |
fa90ecef | 108 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
109 | } |
110 | ||
ea5b213a | 111 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
adddaaf4 | 112 | static bool _edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 113 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
a4fc5ed6 | 114 | |
a4fc5ed6 | 115 | static int |
ea5b213a | 116 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 117 | { |
7183dc29 | 118 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
06ea66b6 | 119 | struct drm_device *dev = intel_dp->attached_connector->base.dev; |
a4fc5ed6 KP |
120 | |
121 | switch (max_link_bw) { | |
122 | case DP_LINK_BW_1_62: | |
123 | case DP_LINK_BW_2_7: | |
124 | break; | |
d4eead50 | 125 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
9bbfd20a PZ |
126 | if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || |
127 | INTEL_INFO(dev)->gen >= 8) && | |
06ea66b6 TP |
128 | intel_dp->dpcd[DP_DPCD_REV] >= 0x12) |
129 | max_link_bw = DP_LINK_BW_5_4; | |
130 | else | |
131 | max_link_bw = DP_LINK_BW_2_7; | |
d4eead50 | 132 | break; |
a4fc5ed6 | 133 | default: |
d4eead50 ID |
134 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
135 | max_link_bw); | |
a4fc5ed6 KP |
136 | max_link_bw = DP_LINK_BW_1_62; |
137 | break; | |
138 | } | |
139 | return max_link_bw; | |
140 | } | |
141 | ||
eeb6324d PZ |
142 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
143 | { | |
144 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
145 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
146 | u8 source_max, sink_max; | |
147 | ||
148 | source_max = 4; | |
149 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
150 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
151 | source_max = 2; | |
152 | ||
153 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
154 | ||
155 | return min(source_max, sink_max); | |
156 | } | |
157 | ||
cd9dde44 AJ |
158 | /* |
159 | * The units on the numbers in the next two are... bizarre. Examples will | |
160 | * make it clearer; this one parallels an example in the eDP spec. | |
161 | * | |
162 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
163 | * | |
164 | * 270000 * 1 * 8 / 10 == 216000 | |
165 | * | |
166 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
167 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
168 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
169 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
170 | * | |
171 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
172 | * get the result in decakilobits instead of kilobits. | |
173 | */ | |
174 | ||
a4fc5ed6 | 175 | static int |
c898261c | 176 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 177 | { |
cd9dde44 | 178 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
179 | } |
180 | ||
fe27d53e DA |
181 | static int |
182 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
183 | { | |
184 | return (max_link_clock * max_lanes * 8) / 10; | |
185 | } | |
186 | ||
c19de8eb | 187 | static enum drm_mode_status |
a4fc5ed6 KP |
188 | intel_dp_mode_valid(struct drm_connector *connector, |
189 | struct drm_display_mode *mode) | |
190 | { | |
df0e9248 | 191 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
192 | struct intel_connector *intel_connector = to_intel_connector(connector); |
193 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
194 | int target_clock = mode->clock; |
195 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 196 | |
dd06f90e JN |
197 | if (is_edp(intel_dp) && fixed_mode) { |
198 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
199 | return MODE_PANEL; |
200 | ||
dd06f90e | 201 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 202 | return MODE_PANEL; |
03afc4a2 DV |
203 | |
204 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
205 | } |
206 | ||
36008365 | 207 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
eeb6324d | 208 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
209 | |
210 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
211 | mode_rate = intel_dp_link_required(target_clock, 18); | |
212 | ||
213 | if (mode_rate > max_rate) | |
c4867936 | 214 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
215 | |
216 | if (mode->clock < 10000) | |
217 | return MODE_CLOCK_LOW; | |
218 | ||
0af78a2b DV |
219 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
220 | return MODE_H_ILLEGAL; | |
221 | ||
a4fc5ed6 KP |
222 | return MODE_OK; |
223 | } | |
224 | ||
225 | static uint32_t | |
226 | pack_aux(uint8_t *src, int src_bytes) | |
227 | { | |
228 | int i; | |
229 | uint32_t v = 0; | |
230 | ||
231 | if (src_bytes > 4) | |
232 | src_bytes = 4; | |
233 | for (i = 0; i < src_bytes; i++) | |
234 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
235 | return v; | |
236 | } | |
237 | ||
238 | static void | |
239 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
240 | { | |
241 | int i; | |
242 | if (dst_bytes > 4) | |
243 | dst_bytes = 4; | |
244 | for (i = 0; i < dst_bytes; i++) | |
245 | dst[i] = src >> ((3-i) * 8); | |
246 | } | |
247 | ||
fb0f8fbf KP |
248 | /* hrawclock is 1/4 the FSB frequency */ |
249 | static int | |
250 | intel_hrawclk(struct drm_device *dev) | |
251 | { | |
252 | struct drm_i915_private *dev_priv = dev->dev_private; | |
253 | uint32_t clkcfg; | |
254 | ||
9473c8f4 VP |
255 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
256 | if (IS_VALLEYVIEW(dev)) | |
257 | return 200; | |
258 | ||
fb0f8fbf KP |
259 | clkcfg = I915_READ(CLKCFG); |
260 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
261 | case CLKCFG_FSB_400: | |
262 | return 100; | |
263 | case CLKCFG_FSB_533: | |
264 | return 133; | |
265 | case CLKCFG_FSB_667: | |
266 | return 166; | |
267 | case CLKCFG_FSB_800: | |
268 | return 200; | |
269 | case CLKCFG_FSB_1067: | |
270 | return 266; | |
271 | case CLKCFG_FSB_1333: | |
272 | return 333; | |
273 | /* these two are just a guess; one of them might be right */ | |
274 | case CLKCFG_FSB_1600: | |
275 | case CLKCFG_FSB_1600_ALT: | |
276 | return 400; | |
277 | default: | |
278 | return 133; | |
279 | } | |
280 | } | |
281 | ||
bf13e81b JN |
282 | static void |
283 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
284 | struct intel_dp *intel_dp, | |
285 | struct edp_power_seq *out); | |
286 | static void | |
287 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
288 | struct intel_dp *intel_dp, | |
289 | struct edp_power_seq *out); | |
290 | ||
291 | static enum pipe | |
292 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
293 | { | |
294 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
295 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
296 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
297 | struct drm_i915_private *dev_priv = dev->dev_private; | |
298 | enum port port = intel_dig_port->port; | |
299 | enum pipe pipe; | |
300 | ||
301 | /* modeset should have pipe */ | |
302 | if (crtc) | |
303 | return to_intel_crtc(crtc)->pipe; | |
304 | ||
305 | /* init time, try to find a pipe with this port selected */ | |
306 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { | |
307 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
308 | PANEL_PORT_SELECT_MASK; | |
309 | if (port_sel == PANEL_PORT_SELECT_DPB_VLV && port == PORT_B) | |
310 | return pipe; | |
311 | if (port_sel == PANEL_PORT_SELECT_DPC_VLV && port == PORT_C) | |
312 | return pipe; | |
313 | } | |
314 | ||
315 | /* shrug */ | |
316 | return PIPE_A; | |
317 | } | |
318 | ||
319 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
320 | { | |
321 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
322 | ||
323 | if (HAS_PCH_SPLIT(dev)) | |
324 | return PCH_PP_CONTROL; | |
325 | else | |
326 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
327 | } | |
328 | ||
329 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
330 | { | |
331 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
332 | ||
333 | if (HAS_PCH_SPLIT(dev)) | |
334 | return PCH_PP_STATUS; | |
335 | else | |
336 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
337 | } | |
338 | ||
4be73780 | 339 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 340 | { |
30add22d | 341 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
342 | struct drm_i915_private *dev_priv = dev->dev_private; |
343 | ||
bf13e81b | 344 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
345 | } |
346 | ||
4be73780 | 347 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 348 | { |
30add22d | 349 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 | 350 | struct drm_i915_private *dev_priv = dev->dev_private; |
bb4932c4 ID |
351 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
352 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
353 | enum intel_display_power_domain power_domain; | |
ebf33b18 | 354 | |
bb4932c4 ID |
355 | power_domain = intel_display_port_power_domain(intel_encoder); |
356 | return intel_display_power_enabled(dev_priv, power_domain) && | |
efbc20ab | 357 | (I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD) != 0; |
ebf33b18 KP |
358 | } |
359 | ||
9b984dae KP |
360 | static void |
361 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
362 | { | |
30add22d | 363 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 364 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 365 | |
9b984dae KP |
366 | if (!is_edp(intel_dp)) |
367 | return; | |
453c5420 | 368 | |
4be73780 | 369 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
370 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
371 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
372 | I915_READ(_pp_stat_reg(intel_dp)), |
373 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
374 | } |
375 | } | |
376 | ||
9ee32fea DV |
377 | static uint32_t |
378 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
379 | { | |
380 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
381 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
382 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 383 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
384 | uint32_t status; |
385 | bool done; | |
386 | ||
ef04f00d | 387 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 388 | if (has_aux_irq) |
b18ac466 | 389 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 390 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
391 | else |
392 | done = wait_for_atomic(C, 10) == 0; | |
393 | if (!done) | |
394 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
395 | has_aux_irq); | |
396 | #undef C | |
397 | ||
398 | return status; | |
399 | } | |
400 | ||
ec5b01dd | 401 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 402 | { |
174edf1f PZ |
403 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
404 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 405 | |
ec5b01dd DL |
406 | /* |
407 | * The clock divider is based off the hrawclk, and would like to run at | |
408 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 409 | */ |
ec5b01dd DL |
410 | return index ? 0 : intel_hrawclk(dev) / 2; |
411 | } | |
412 | ||
413 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
414 | { | |
415 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
416 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
417 | ||
418 | if (index) | |
419 | return 0; | |
420 | ||
421 | if (intel_dig_port->port == PORT_A) { | |
422 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
b84a1cf8 | 423 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 424 | else |
b84a1cf8 | 425 | return 225; /* eDP input clock at 450Mhz */ |
ec5b01dd DL |
426 | } else { |
427 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
428 | } | |
429 | } | |
430 | ||
431 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
432 | { | |
433 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
434 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
435 | struct drm_i915_private *dev_priv = dev->dev_private; | |
436 | ||
437 | if (intel_dig_port->port == PORT_A) { | |
438 | if (index) | |
439 | return 0; | |
440 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
2c55c336 JN |
441 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
442 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
443 | switch (index) { |
444 | case 0: return 63; | |
445 | case 1: return 72; | |
446 | default: return 0; | |
447 | } | |
ec5b01dd | 448 | } else { |
bc86625a | 449 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 450 | } |
b84a1cf8 RV |
451 | } |
452 | ||
ec5b01dd DL |
453 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
454 | { | |
455 | return index ? 0 : 100; | |
456 | } | |
457 | ||
5ed12a19 DL |
458 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
459 | bool has_aux_irq, | |
460 | int send_bytes, | |
461 | uint32_t aux_clock_divider) | |
462 | { | |
463 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
464 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
465 | uint32_t precharge, timeout; | |
466 | ||
467 | if (IS_GEN6(dev)) | |
468 | precharge = 3; | |
469 | else | |
470 | precharge = 5; | |
471 | ||
472 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
473 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
474 | else | |
475 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
476 | ||
477 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 478 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 479 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 480 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 481 | timeout | |
788d4433 | 482 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
483 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
484 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 485 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
486 | } |
487 | ||
b84a1cf8 RV |
488 | static int |
489 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
490 | uint8_t *send, int send_bytes, | |
491 | uint8_t *recv, int recv_size) | |
492 | { | |
493 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
494 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
495 | struct drm_i915_private *dev_priv = dev->dev_private; | |
496 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
497 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 498 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
499 | int i, ret, recv_bytes; |
500 | uint32_t status; | |
5ed12a19 | 501 | int try, clock = 0; |
4e6b788c | 502 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
503 | bool vdd; |
504 | ||
505 | vdd = _edp_panel_vdd_on(intel_dp); | |
b84a1cf8 RV |
506 | |
507 | /* dp aux is extremely sensitive to irq latency, hence request the | |
508 | * lowest possible wakeup latency and so prevent the cpu from going into | |
509 | * deep sleep states. | |
510 | */ | |
511 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
512 | ||
513 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 514 | |
c67a470b PZ |
515 | intel_aux_display_runtime_get(dev_priv); |
516 | ||
11bee43e JB |
517 | /* Try to wait for any previous AUX channel activity */ |
518 | for (try = 0; try < 3; try++) { | |
ef04f00d | 519 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
520 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
521 | break; | |
522 | msleep(1); | |
523 | } | |
524 | ||
525 | if (try == 3) { | |
526 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
527 | I915_READ(ch_ctl)); | |
9ee32fea DV |
528 | ret = -EBUSY; |
529 | goto out; | |
4f7f7b7e CW |
530 | } |
531 | ||
46a5ae9f PZ |
532 | /* Only 5 data registers! */ |
533 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
534 | ret = -E2BIG; | |
535 | goto out; | |
536 | } | |
537 | ||
ec5b01dd | 538 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
539 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
540 | has_aux_irq, | |
541 | send_bytes, | |
542 | aux_clock_divider); | |
5ed12a19 | 543 | |
bc86625a CW |
544 | /* Must try at least 3 times according to DP spec */ |
545 | for (try = 0; try < 5; try++) { | |
546 | /* Load the send data into the aux channel data registers */ | |
547 | for (i = 0; i < send_bytes; i += 4) | |
548 | I915_WRITE(ch_data + i, | |
549 | pack_aux(send + i, send_bytes - i)); | |
550 | ||
551 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 552 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
553 | |
554 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
555 | ||
556 | /* Clear done status and any errors */ | |
557 | I915_WRITE(ch_ctl, | |
558 | status | | |
559 | DP_AUX_CH_CTL_DONE | | |
560 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
561 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
562 | ||
563 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
564 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
565 | continue; | |
566 | if (status & DP_AUX_CH_CTL_DONE) | |
567 | break; | |
568 | } | |
4f7f7b7e | 569 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
570 | break; |
571 | } | |
572 | ||
a4fc5ed6 | 573 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 574 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
575 | ret = -EBUSY; |
576 | goto out; | |
a4fc5ed6 KP |
577 | } |
578 | ||
579 | /* Check for timeout or receive error. | |
580 | * Timeouts occur when the sink is not connected | |
581 | */ | |
a5b3da54 | 582 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 583 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
584 | ret = -EIO; |
585 | goto out; | |
a5b3da54 | 586 | } |
1ae8c0a5 KP |
587 | |
588 | /* Timeouts occur when the device isn't connected, so they're | |
589 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 590 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 591 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
592 | ret = -ETIMEDOUT; |
593 | goto out; | |
a4fc5ed6 KP |
594 | } |
595 | ||
596 | /* Unload any bytes sent back from the other side */ | |
597 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
598 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
599 | if (recv_bytes > recv_size) |
600 | recv_bytes = recv_size; | |
0206e353 | 601 | |
4f7f7b7e CW |
602 | for (i = 0; i < recv_bytes; i += 4) |
603 | unpack_aux(I915_READ(ch_data + i), | |
604 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 605 | |
9ee32fea DV |
606 | ret = recv_bytes; |
607 | out: | |
608 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 609 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 610 | |
884f19e9 JN |
611 | if (vdd) |
612 | edp_panel_vdd_off(intel_dp, false); | |
613 | ||
9ee32fea | 614 | return ret; |
a4fc5ed6 KP |
615 | } |
616 | ||
a6c8aff0 JN |
617 | #define BARE_ADDRESS_SIZE 3 |
618 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
619 | static ssize_t |
620 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 621 | { |
9d1a1031 JN |
622 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
623 | uint8_t txbuf[20], rxbuf[20]; | |
624 | size_t txsize, rxsize; | |
a4fc5ed6 | 625 | int ret; |
a4fc5ed6 | 626 | |
9d1a1031 JN |
627 | txbuf[0] = msg->request << 4; |
628 | txbuf[1] = msg->address >> 8; | |
629 | txbuf[2] = msg->address & 0xff; | |
630 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 631 | |
9d1a1031 JN |
632 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
633 | case DP_AUX_NATIVE_WRITE: | |
634 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 635 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
9d1a1031 | 636 | rxsize = 1; |
f51a44b9 | 637 | |
9d1a1031 JN |
638 | if (WARN_ON(txsize > 20)) |
639 | return -E2BIG; | |
a4fc5ed6 | 640 | |
9d1a1031 | 641 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 642 | |
9d1a1031 JN |
643 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
644 | if (ret > 0) { | |
645 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 646 | |
9d1a1031 JN |
647 | /* Return payload size. */ |
648 | ret = msg->size; | |
649 | } | |
650 | break; | |
46a5ae9f | 651 | |
9d1a1031 JN |
652 | case DP_AUX_NATIVE_READ: |
653 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 654 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 655 | rxsize = msg->size + 1; |
a4fc5ed6 | 656 | |
9d1a1031 JN |
657 | if (WARN_ON(rxsize > 20)) |
658 | return -E2BIG; | |
a4fc5ed6 | 659 | |
9d1a1031 JN |
660 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
661 | if (ret > 0) { | |
662 | msg->reply = rxbuf[0] >> 4; | |
663 | /* | |
664 | * Assume happy day, and copy the data. The caller is | |
665 | * expected to check msg->reply before touching it. | |
666 | * | |
667 | * Return payload size. | |
668 | */ | |
669 | ret--; | |
670 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 671 | } |
9d1a1031 JN |
672 | break; |
673 | ||
674 | default: | |
675 | ret = -EINVAL; | |
676 | break; | |
a4fc5ed6 | 677 | } |
f51a44b9 | 678 | |
9d1a1031 | 679 | return ret; |
a4fc5ed6 KP |
680 | } |
681 | ||
9d1a1031 JN |
682 | static void |
683 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
684 | { | |
685 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
686 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
687 | enum port port = intel_dig_port->port; | |
0b99836f | 688 | const char *name = NULL; |
ab2c0672 DA |
689 | int ret; |
690 | ||
33ad6626 JN |
691 | switch (port) { |
692 | case PORT_A: | |
693 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 694 | name = "DPDDC-A"; |
ab2c0672 | 695 | break; |
33ad6626 JN |
696 | case PORT_B: |
697 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 698 | name = "DPDDC-B"; |
ab2c0672 | 699 | break; |
33ad6626 JN |
700 | case PORT_C: |
701 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 702 | name = "DPDDC-C"; |
ab2c0672 | 703 | break; |
33ad6626 JN |
704 | case PORT_D: |
705 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 706 | name = "DPDDC-D"; |
33ad6626 JN |
707 | break; |
708 | default: | |
709 | BUG(); | |
ab2c0672 DA |
710 | } |
711 | ||
33ad6626 JN |
712 | if (!HAS_DDI(dev)) |
713 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; | |
8316f337 | 714 | |
0b99836f | 715 | intel_dp->aux.name = name; |
9d1a1031 JN |
716 | intel_dp->aux.dev = dev->dev; |
717 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 718 | |
0b99836f JN |
719 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
720 | connector->base.kdev->kobj.name); | |
8316f337 | 721 | |
4f71d0cb | 722 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 723 | if (ret < 0) { |
4f71d0cb | 724 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
725 | name, ret); |
726 | return; | |
ab2c0672 | 727 | } |
8a5e6aeb | 728 | |
0b99836f JN |
729 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
730 | &intel_dp->aux.ddc.dev.kobj, | |
731 | intel_dp->aux.ddc.dev.kobj.name); | |
732 | if (ret < 0) { | |
733 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 734 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 735 | } |
a4fc5ed6 KP |
736 | } |
737 | ||
80f65de3 ID |
738 | static void |
739 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
740 | { | |
741 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
742 | ||
743 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
0b99836f | 744 | intel_dp->aux.ddc.dev.kobj.name); |
80f65de3 ID |
745 | intel_connector_unregister(intel_connector); |
746 | } | |
747 | ||
0e50338c DV |
748 | static void |
749 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_config *pipe_config, int link_bw) | |
750 | { | |
751 | switch (link_bw) { | |
752 | case DP_LINK_BW_1_62: | |
753 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
754 | break; | |
755 | case DP_LINK_BW_2_7: | |
756 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
757 | break; | |
758 | case DP_LINK_BW_5_4: | |
759 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
760 | break; | |
761 | } | |
762 | } | |
763 | ||
c6bb3538 DV |
764 | static void |
765 | intel_dp_set_clock(struct intel_encoder *encoder, | |
766 | struct intel_crtc_config *pipe_config, int link_bw) | |
767 | { | |
768 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
769 | const struct dp_link_dpll *divisor = NULL; |
770 | int i, count = 0; | |
c6bb3538 DV |
771 | |
772 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
773 | divisor = gen4_dpll; |
774 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 775 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
776 | divisor = pch_dpll; |
777 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
778 | } else if (IS_CHERRYVIEW(dev)) { |
779 | divisor = chv_dpll; | |
780 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 781 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
782 | divisor = vlv_dpll; |
783 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 784 | } |
9dd4ffdf CML |
785 | |
786 | if (divisor && count) { | |
787 | for (i = 0; i < count; i++) { | |
788 | if (link_bw == divisor[i].link_bw) { | |
789 | pipe_config->dpll = divisor[i].dpll; | |
790 | pipe_config->clock_set = true; | |
791 | break; | |
792 | } | |
793 | } | |
c6bb3538 DV |
794 | } |
795 | } | |
796 | ||
439d7ac0 PB |
797 | static void |
798 | intel_dp_set_m2_n2(struct intel_crtc *crtc, struct intel_link_m_n *m_n) | |
799 | { | |
800 | struct drm_device *dev = crtc->base.dev; | |
801 | struct drm_i915_private *dev_priv = dev->dev_private; | |
802 | enum transcoder transcoder = crtc->config.cpu_transcoder; | |
803 | ||
804 | I915_WRITE(PIPE_DATA_M2(transcoder), | |
805 | TU_SIZE(m_n->tu) | m_n->gmch_m); | |
806 | I915_WRITE(PIPE_DATA_N2(transcoder), m_n->gmch_n); | |
807 | I915_WRITE(PIPE_LINK_M2(transcoder), m_n->link_m); | |
808 | I915_WRITE(PIPE_LINK_N2(transcoder), m_n->link_n); | |
809 | } | |
810 | ||
00c09d70 | 811 | bool |
5bfe2ac0 DV |
812 | intel_dp_compute_config(struct intel_encoder *encoder, |
813 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 814 | { |
5bfe2ac0 | 815 | struct drm_device *dev = encoder->base.dev; |
36008365 | 816 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 817 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 818 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 819 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 820 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 821 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 822 | int lane_count, clock; |
56071a20 | 823 | int min_lane_count = 1; |
eeb6324d | 824 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 825 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 826 | int min_clock = 0; |
06ea66b6 | 827 | int max_clock = intel_dp_max_link_bw(intel_dp) >> 3; |
083f9560 | 828 | int bpp, mode_rate; |
06ea66b6 | 829 | static int bws[] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7, DP_LINK_BW_5_4 }; |
ff9a6750 | 830 | int link_avail, link_clock; |
a4fc5ed6 | 831 | |
bc7d38a4 | 832 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
833 | pipe_config->has_pch_encoder = true; |
834 | ||
03afc4a2 | 835 | pipe_config->has_dp_encoder = true; |
9ed109a7 | 836 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 837 | |
dd06f90e JN |
838 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
839 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
840 | adjusted_mode); | |
2dd24552 JB |
841 | if (!HAS_PCH_SPLIT(dev)) |
842 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
843 | intel_connector->panel.fitting_mode); | |
844 | else | |
b074cec8 JB |
845 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
846 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
847 | } |
848 | ||
cb1793ce | 849 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
850 | return false; |
851 | ||
083f9560 DV |
852 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
853 | "max bw %02x pixel clock %iKHz\n", | |
241bfc38 DL |
854 | max_lane_count, bws[max_clock], |
855 | adjusted_mode->crtc_clock); | |
083f9560 | 856 | |
36008365 DV |
857 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
858 | * bpc in between. */ | |
3e7ca985 | 859 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
860 | if (is_edp(intel_dp)) { |
861 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
862 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
863 | dev_priv->vbt.edp_bpp); | |
864 | bpp = dev_priv->vbt.edp_bpp; | |
865 | } | |
866 | ||
f4cdbc21 JN |
867 | if (IS_BROADWELL(dev)) { |
868 | /* Yes, it's an ugly hack. */ | |
869 | min_lane_count = max_lane_count; | |
870 | DRM_DEBUG_KMS("forcing lane count to max (%u) on BDW\n", | |
871 | min_lane_count); | |
872 | } else if (dev_priv->vbt.edp_lanes) { | |
56071a20 JN |
873 | min_lane_count = min(dev_priv->vbt.edp_lanes, |
874 | max_lane_count); | |
875 | DRM_DEBUG_KMS("using min %u lanes per VBT\n", | |
876 | min_lane_count); | |
877 | } | |
878 | ||
879 | if (dev_priv->vbt.edp_rate) { | |
880 | min_clock = min(dev_priv->vbt.edp_rate >> 3, max_clock); | |
881 | DRM_DEBUG_KMS("using min %02x link bw per VBT\n", | |
882 | bws[min_clock]); | |
883 | } | |
7984211e | 884 | } |
657445fe | 885 | |
36008365 | 886 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
887 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
888 | bpp); | |
36008365 | 889 | |
56071a20 JN |
890 | for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) { |
891 | for (clock = min_clock; clock <= max_clock; clock++) { | |
36008365 DV |
892 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); |
893 | link_avail = intel_dp_max_data_rate(link_clock, | |
894 | lane_count); | |
895 | ||
896 | if (mode_rate <= link_avail) { | |
897 | goto found; | |
898 | } | |
899 | } | |
900 | } | |
901 | } | |
c4867936 | 902 | |
36008365 | 903 | return false; |
3685a8f3 | 904 | |
36008365 | 905 | found: |
55bc60db VS |
906 | if (intel_dp->color_range_auto) { |
907 | /* | |
908 | * See: | |
909 | * CEA-861-E - 5.1 Default Encoding Parameters | |
910 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
911 | */ | |
18316c8c | 912 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
913 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
914 | else | |
915 | intel_dp->color_range = 0; | |
916 | } | |
917 | ||
3685a8f3 | 918 | if (intel_dp->color_range) |
50f3b016 | 919 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 920 | |
36008365 DV |
921 | intel_dp->link_bw = bws[clock]; |
922 | intel_dp->lane_count = lane_count; | |
657445fe | 923 | pipe_config->pipe_bpp = bpp; |
ff9a6750 | 924 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
a4fc5ed6 | 925 | |
36008365 DV |
926 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
927 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 928 | pipe_config->port_clock, bpp); |
36008365 DV |
929 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
930 | mode_rate, link_avail); | |
a4fc5ed6 | 931 | |
03afc4a2 | 932 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
933 | adjusted_mode->crtc_clock, |
934 | pipe_config->port_clock, | |
03afc4a2 | 935 | &pipe_config->dp_m_n); |
9d1a455b | 936 | |
439d7ac0 PB |
937 | if (intel_connector->panel.downclock_mode != NULL && |
938 | intel_dp->drrs_state.type == SEAMLESS_DRRS_SUPPORT) { | |
939 | intel_link_compute_m_n(bpp, lane_count, | |
940 | intel_connector->panel.downclock_mode->clock, | |
941 | pipe_config->port_clock, | |
942 | &pipe_config->dp_m2_n2); | |
943 | } | |
944 | ||
0e50338c DV |
945 | if (HAS_DDI(dev)) |
946 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); | |
947 | else | |
948 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 949 | |
03afc4a2 | 950 | return true; |
a4fc5ed6 KP |
951 | } |
952 | ||
7c62a164 | 953 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 954 | { |
7c62a164 DV |
955 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
956 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
957 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
958 | struct drm_i915_private *dev_priv = dev->dev_private; |
959 | u32 dpa_ctl; | |
960 | ||
ff9a6750 | 961 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", crtc->config.port_clock); |
ea9b6006 DV |
962 | dpa_ctl = I915_READ(DP_A); |
963 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
964 | ||
ff9a6750 | 965 | if (crtc->config.port_clock == 162000) { |
1ce17038 DV |
966 | /* For a long time we've carried around a ILK-DevA w/a for the |
967 | * 160MHz clock. If we're really unlucky, it's still required. | |
968 | */ | |
969 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 970 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 971 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
972 | } else { |
973 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 974 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 975 | } |
1ce17038 | 976 | |
ea9b6006 DV |
977 | I915_WRITE(DP_A, dpa_ctl); |
978 | ||
979 | POSTING_READ(DP_A); | |
980 | udelay(500); | |
981 | } | |
982 | ||
8ac33ed3 | 983 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 984 | { |
b934223d | 985 | struct drm_device *dev = encoder->base.dev; |
417e822d | 986 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 987 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 988 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d DV |
989 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
990 | struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode; | |
a4fc5ed6 | 991 | |
417e822d | 992 | /* |
1a2eb460 | 993 | * There are four kinds of DP registers: |
417e822d KP |
994 | * |
995 | * IBX PCH | |
1a2eb460 KP |
996 | * SNB CPU |
997 | * IVB CPU | |
417e822d KP |
998 | * CPT PCH |
999 | * | |
1000 | * IBX PCH and CPU are the same for almost everything, | |
1001 | * except that the CPU DP PLL is configured in this | |
1002 | * register | |
1003 | * | |
1004 | * CPT PCH is quite different, having many bits moved | |
1005 | * to the TRANS_DP_CTL register instead. That | |
1006 | * configuration happens (oddly) in ironlake_pch_enable | |
1007 | */ | |
9c9e7927 | 1008 | |
417e822d KP |
1009 | /* Preserve the BIOS-computed detected bit. This is |
1010 | * supposed to be read-only. | |
1011 | */ | |
1012 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1013 | |
417e822d | 1014 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1015 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1016 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1017 | |
9ed109a7 | 1018 | if (crtc->config.has_audio) { |
e0dac65e | 1019 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
7c62a164 | 1020 | pipe_name(crtc->pipe)); |
ea5b213a | 1021 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
b934223d | 1022 | intel_write_eld(&encoder->base, adjusted_mode); |
e0dac65e | 1023 | } |
247d89f6 | 1024 | |
417e822d | 1025 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1026 | |
bc7d38a4 | 1027 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1028 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1029 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1030 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1031 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1032 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1033 | ||
6aba5b6c | 1034 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1035 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1036 | ||
7c62a164 | 1037 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1038 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1039 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1040 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1041 | |
1042 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1043 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1044 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1045 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1046 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1047 | ||
6aba5b6c | 1048 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1049 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1050 | ||
44f37d1f CML |
1051 | if (!IS_CHERRYVIEW(dev)) { |
1052 | if (crtc->pipe == 1) | |
1053 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1054 | } else { | |
1055 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1056 | } | |
417e822d KP |
1057 | } else { |
1058 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1059 | } |
a4fc5ed6 KP |
1060 | } |
1061 | ||
ffd6749d PZ |
1062 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1063 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1064 | |
1a5ef5b7 PZ |
1065 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1066 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1067 | |
ffd6749d PZ |
1068 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1069 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1070 | |
4be73780 | 1071 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1072 | u32 mask, |
1073 | u32 value) | |
bd943159 | 1074 | { |
30add22d | 1075 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1076 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1077 | u32 pp_stat_reg, pp_ctrl_reg; |
1078 | ||
bf13e81b JN |
1079 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1080 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1081 | |
99ea7127 | 1082 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1083 | mask, value, |
1084 | I915_READ(pp_stat_reg), | |
1085 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1086 | |
453c5420 | 1087 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1088 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1089 | I915_READ(pp_stat_reg), |
1090 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1091 | } |
54c136d4 CW |
1092 | |
1093 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1094 | } |
32ce697c | 1095 | |
4be73780 | 1096 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1097 | { |
1098 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1099 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1100 | } |
1101 | ||
4be73780 | 1102 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1103 | { |
1104 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1105 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1106 | } |
1107 | ||
4be73780 | 1108 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1109 | { |
1110 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1111 | |
1112 | /* When we disable the VDD override bit last we have to do the manual | |
1113 | * wait. */ | |
1114 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1115 | intel_dp->panel_power_cycle_delay); | |
1116 | ||
4be73780 | 1117 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1118 | } |
1119 | ||
4be73780 | 1120 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1121 | { |
1122 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1123 | intel_dp->backlight_on_delay); | |
1124 | } | |
1125 | ||
4be73780 | 1126 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1127 | { |
1128 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1129 | intel_dp->backlight_off_delay); | |
1130 | } | |
99ea7127 | 1131 | |
832dd3c1 KP |
1132 | /* Read the current pp_control value, unlocking the register if it |
1133 | * is locked | |
1134 | */ | |
1135 | ||
453c5420 | 1136 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1137 | { |
453c5420 JB |
1138 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1139 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1140 | u32 control; | |
832dd3c1 | 1141 | |
bf13e81b | 1142 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1143 | control &= ~PANEL_UNLOCK_MASK; |
1144 | control |= PANEL_UNLOCK_REGS; | |
1145 | return control; | |
bd943159 KP |
1146 | } |
1147 | ||
adddaaf4 | 1148 | static bool _edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1149 | { |
30add22d | 1150 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1151 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1152 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1153 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1154 | enum intel_display_power_domain power_domain; |
5d613501 | 1155 | u32 pp; |
453c5420 | 1156 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1157 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1158 | |
97af61f5 | 1159 | if (!is_edp(intel_dp)) |
adddaaf4 | 1160 | return false; |
bd943159 KP |
1161 | |
1162 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 1163 | |
4be73780 | 1164 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1165 | return need_to_disable; |
b0665d57 | 1166 | |
4e6e1a54 ID |
1167 | power_domain = intel_display_port_power_domain(intel_encoder); |
1168 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1169 | |
b0665d57 | 1170 | DRM_DEBUG_KMS("Turning eDP VDD on\n"); |
bd943159 | 1171 | |
4be73780 DV |
1172 | if (!edp_have_panel_power(intel_dp)) |
1173 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1174 | |
453c5420 | 1175 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1176 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1177 | |
bf13e81b JN |
1178 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1179 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1180 | |
1181 | I915_WRITE(pp_ctrl_reg, pp); | |
1182 | POSTING_READ(pp_ctrl_reg); | |
1183 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1184 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1185 | /* |
1186 | * If the panel wasn't on, delay before accessing aux channel | |
1187 | */ | |
4be73780 | 1188 | if (!edp_have_panel_power(intel_dp)) { |
bd943159 | 1189 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1190 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1191 | } |
adddaaf4 JN |
1192 | |
1193 | return need_to_disable; | |
1194 | } | |
1195 | ||
b80d6c78 | 1196 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 JN |
1197 | { |
1198 | if (is_edp(intel_dp)) { | |
1199 | bool vdd = _edp_panel_vdd_on(intel_dp); | |
1200 | ||
1201 | WARN(!vdd, "eDP VDD already requested on\n"); | |
1202 | } | |
5d613501 JB |
1203 | } |
1204 | ||
4be73780 | 1205 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1206 | { |
30add22d | 1207 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
1208 | struct drm_i915_private *dev_priv = dev->dev_private; |
1209 | u32 pp; | |
453c5420 | 1210 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1211 | |
51fd371b | 1212 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
a0e99e68 | 1213 | |
4be73780 | 1214 | if (!intel_dp->want_panel_vdd && edp_have_panel_vdd(intel_dp)) { |
4e6e1a54 ID |
1215 | struct intel_digital_port *intel_dig_port = |
1216 | dp_to_dig_port(intel_dp); | |
1217 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1218 | enum intel_display_power_domain power_domain; | |
1219 | ||
b0665d57 PZ |
1220 | DRM_DEBUG_KMS("Turning eDP VDD off\n"); |
1221 | ||
453c5420 | 1222 | pp = ironlake_get_pp_control(intel_dp); |
bd943159 | 1223 | pp &= ~EDP_FORCE_VDD; |
bd943159 | 1224 | |
9f08ef59 PZ |
1225 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1226 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
453c5420 JB |
1227 | |
1228 | I915_WRITE(pp_ctrl_reg, pp); | |
1229 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1230 | |
453c5420 JB |
1231 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1232 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1233 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
90791a5c PZ |
1234 | |
1235 | if ((pp & POWER_TARGET_ON) == 0) | |
dce56b3c | 1236 | intel_dp->last_power_cycle = jiffies; |
e9cb81a2 | 1237 | |
4e6e1a54 ID |
1238 | power_domain = intel_display_port_power_domain(intel_encoder); |
1239 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 KP |
1240 | } |
1241 | } | |
5d613501 | 1242 | |
4be73780 | 1243 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1244 | { |
1245 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1246 | struct intel_dp, panel_vdd_work); | |
30add22d | 1247 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bd943159 | 1248 | |
51fd371b | 1249 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4be73780 | 1250 | edp_panel_vdd_off_sync(intel_dp); |
51fd371b | 1251 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
bd943159 KP |
1252 | } |
1253 | ||
4be73780 | 1254 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1255 | { |
97af61f5 KP |
1256 | if (!is_edp(intel_dp)) |
1257 | return; | |
5d613501 | 1258 | |
bd943159 | 1259 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); |
f2e8b18a | 1260 | |
bd943159 KP |
1261 | intel_dp->want_panel_vdd = false; |
1262 | ||
1263 | if (sync) { | |
4be73780 | 1264 | edp_panel_vdd_off_sync(intel_dp); |
bd943159 KP |
1265 | } else { |
1266 | /* | |
1267 | * Queue the timer to fire a long | |
1268 | * time from now (relative to the power down delay) | |
1269 | * to keep the panel power up across a sequence of operations | |
1270 | */ | |
1271 | schedule_delayed_work(&intel_dp->panel_vdd_work, | |
1272 | msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5)); | |
1273 | } | |
5d613501 JB |
1274 | } |
1275 | ||
4be73780 | 1276 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1277 | { |
30add22d | 1278 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1279 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1280 | u32 pp; |
453c5420 | 1281 | u32 pp_ctrl_reg; |
9934c132 | 1282 | |
97af61f5 | 1283 | if (!is_edp(intel_dp)) |
bd943159 | 1284 | return; |
99ea7127 KP |
1285 | |
1286 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1287 | ||
4be73780 | 1288 | if (edp_have_panel_power(intel_dp)) { |
99ea7127 | 1289 | DRM_DEBUG_KMS("eDP power already on\n"); |
7d639f35 | 1290 | return; |
99ea7127 | 1291 | } |
9934c132 | 1292 | |
4be73780 | 1293 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1294 | |
bf13e81b | 1295 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1296 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1297 | if (IS_GEN5(dev)) { |
1298 | /* ILK workaround: disable reset around power sequence */ | |
1299 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1300 | I915_WRITE(pp_ctrl_reg, pp); |
1301 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1302 | } |
37c6c9b0 | 1303 | |
1c0ae80a | 1304 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1305 | if (!IS_GEN5(dev)) |
1306 | pp |= PANEL_POWER_RESET; | |
1307 | ||
453c5420 JB |
1308 | I915_WRITE(pp_ctrl_reg, pp); |
1309 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1310 | |
4be73780 | 1311 | wait_panel_on(intel_dp); |
dce56b3c | 1312 | intel_dp->last_power_on = jiffies; |
9934c132 | 1313 | |
05ce1a49 KP |
1314 | if (IS_GEN5(dev)) { |
1315 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1316 | I915_WRITE(pp_ctrl_reg, pp); |
1317 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1318 | } |
9934c132 JB |
1319 | } |
1320 | ||
4be73780 | 1321 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1322 | { |
4e6e1a54 ID |
1323 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1324 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1325 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1326 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1327 | enum intel_display_power_domain power_domain; |
99ea7127 | 1328 | u32 pp; |
453c5420 | 1329 | u32 pp_ctrl_reg; |
9934c132 | 1330 | |
97af61f5 KP |
1331 | if (!is_edp(intel_dp)) |
1332 | return; | |
37c6c9b0 | 1333 | |
99ea7127 | 1334 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1335 | |
24f3e092 JN |
1336 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
1337 | ||
453c5420 | 1338 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1339 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1340 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1341 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1342 | EDP_BLC_ENABLE); | |
453c5420 | 1343 | |
bf13e81b | 1344 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1345 | |
849e39f5 PZ |
1346 | intel_dp->want_panel_vdd = false; |
1347 | ||
453c5420 JB |
1348 | I915_WRITE(pp_ctrl_reg, pp); |
1349 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1350 | |
dce56b3c | 1351 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1352 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1353 | |
1354 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1355 | power_domain = intel_display_port_power_domain(intel_encoder); |
1356 | intel_display_power_put(dev_priv, power_domain); | |
9934c132 JB |
1357 | } |
1358 | ||
4be73780 | 1359 | void intel_edp_backlight_on(struct intel_dp *intel_dp) |
32f9d658 | 1360 | { |
da63a9f2 PZ |
1361 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1362 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1363 | struct drm_i915_private *dev_priv = dev->dev_private; |
1364 | u32 pp; | |
453c5420 | 1365 | u32 pp_ctrl_reg; |
32f9d658 | 1366 | |
f01eca2e KP |
1367 | if (!is_edp(intel_dp)) |
1368 | return; | |
1369 | ||
28c97730 | 1370 | DRM_DEBUG_KMS("\n"); |
f7d2323c JB |
1371 | |
1372 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1373 | ||
01cb9ea6 JB |
1374 | /* |
1375 | * If we enable the backlight right away following a panel power | |
1376 | * on, we may see slight flicker as the panel syncs with the eDP | |
1377 | * link. So delay a bit to make sure the image is solid before | |
1378 | * allowing it to appear. | |
1379 | */ | |
4be73780 | 1380 | wait_backlight_on(intel_dp); |
453c5420 | 1381 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1382 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1383 | |
bf13e81b | 1384 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1385 | |
1386 | I915_WRITE(pp_ctrl_reg, pp); | |
1387 | POSTING_READ(pp_ctrl_reg); | |
32f9d658 ZW |
1388 | } |
1389 | ||
4be73780 | 1390 | void intel_edp_backlight_off(struct intel_dp *intel_dp) |
32f9d658 | 1391 | { |
30add22d | 1392 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1393 | struct drm_i915_private *dev_priv = dev->dev_private; |
1394 | u32 pp; | |
453c5420 | 1395 | u32 pp_ctrl_reg; |
32f9d658 | 1396 | |
f01eca2e KP |
1397 | if (!is_edp(intel_dp)) |
1398 | return; | |
1399 | ||
28c97730 | 1400 | DRM_DEBUG_KMS("\n"); |
453c5420 | 1401 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1402 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1403 | |
bf13e81b | 1404 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1405 | |
1406 | I915_WRITE(pp_ctrl_reg, pp); | |
1407 | POSTING_READ(pp_ctrl_reg); | |
dce56b3c | 1408 | intel_dp->last_backlight_off = jiffies; |
f7d2323c JB |
1409 | |
1410 | edp_wait_backlight_off(intel_dp); | |
1411 | ||
1412 | intel_panel_disable_backlight(intel_dp->attached_connector); | |
32f9d658 | 1413 | } |
a4fc5ed6 | 1414 | |
2bd2ad64 | 1415 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1416 | { |
da63a9f2 PZ |
1417 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1418 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1419 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1420 | struct drm_i915_private *dev_priv = dev->dev_private; |
1421 | u32 dpa_ctl; | |
1422 | ||
2bd2ad64 DV |
1423 | assert_pipe_disabled(dev_priv, |
1424 | to_intel_crtc(crtc)->pipe); | |
1425 | ||
d240f20f JB |
1426 | DRM_DEBUG_KMS("\n"); |
1427 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1428 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1429 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1430 | ||
1431 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1432 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1433 | * enable bits here to ensure that we don't enable too much. */ | |
1434 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1435 | intel_dp->DP |= DP_PLL_ENABLE; | |
1436 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1437 | POSTING_READ(DP_A); |
1438 | udelay(200); | |
d240f20f JB |
1439 | } |
1440 | ||
2bd2ad64 | 1441 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1442 | { |
da63a9f2 PZ |
1443 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1444 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1445 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1446 | struct drm_i915_private *dev_priv = dev->dev_private; |
1447 | u32 dpa_ctl; | |
1448 | ||
2bd2ad64 DV |
1449 | assert_pipe_disabled(dev_priv, |
1450 | to_intel_crtc(crtc)->pipe); | |
1451 | ||
d240f20f | 1452 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1453 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1454 | "dp pll off, should be on\n"); | |
1455 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1456 | ||
1457 | /* We can't rely on the value tracked for the DP register in | |
1458 | * intel_dp->DP because link_down must not change that (otherwise link | |
1459 | * re-training will fail. */ | |
298b0b39 | 1460 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1461 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1462 | POSTING_READ(DP_A); |
d240f20f JB |
1463 | udelay(200); |
1464 | } | |
1465 | ||
c7ad3810 | 1466 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1467 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1468 | { |
1469 | int ret, i; | |
1470 | ||
1471 | /* Should have a valid DPCD by this point */ | |
1472 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1473 | return; | |
1474 | ||
1475 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
1476 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1477 | DP_SET_POWER_D3); | |
c7ad3810 JB |
1478 | if (ret != 1) |
1479 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
1480 | } else { | |
1481 | /* | |
1482 | * When turning on, we need to retry for 1ms to give the sink | |
1483 | * time to wake up. | |
1484 | */ | |
1485 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
1486 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1487 | DP_SET_POWER_D0); | |
c7ad3810 JB |
1488 | if (ret == 1) |
1489 | break; | |
1490 | msleep(1); | |
1491 | } | |
1492 | } | |
1493 | } | |
1494 | ||
19d8fe15 DV |
1495 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1496 | enum pipe *pipe) | |
d240f20f | 1497 | { |
19d8fe15 | 1498 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1499 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1500 | struct drm_device *dev = encoder->base.dev; |
1501 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
1502 | enum intel_display_power_domain power_domain; |
1503 | u32 tmp; | |
1504 | ||
1505 | power_domain = intel_display_port_power_domain(encoder); | |
1506 | if (!intel_display_power_enabled(dev_priv, power_domain)) | |
1507 | return false; | |
1508 | ||
1509 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
1510 | |
1511 | if (!(tmp & DP_PORT_EN)) | |
1512 | return false; | |
1513 | ||
bc7d38a4 | 1514 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1515 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
1516 | } else if (IS_CHERRYVIEW(dev)) { |
1517 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 1518 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1519 | *pipe = PORT_TO_PIPE(tmp); |
1520 | } else { | |
1521 | u32 trans_sel; | |
1522 | u32 trans_dp; | |
1523 | int i; | |
1524 | ||
1525 | switch (intel_dp->output_reg) { | |
1526 | case PCH_DP_B: | |
1527 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1528 | break; | |
1529 | case PCH_DP_C: | |
1530 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1531 | break; | |
1532 | case PCH_DP_D: | |
1533 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1534 | break; | |
1535 | default: | |
1536 | return true; | |
1537 | } | |
1538 | ||
1539 | for_each_pipe(i) { | |
1540 | trans_dp = I915_READ(TRANS_DP_CTL(i)); | |
1541 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1542 | *pipe = i; | |
1543 | return true; | |
1544 | } | |
1545 | } | |
19d8fe15 | 1546 | |
4a0833ec DV |
1547 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1548 | intel_dp->output_reg); | |
1549 | } | |
d240f20f | 1550 | |
19d8fe15 DV |
1551 | return true; |
1552 | } | |
d240f20f | 1553 | |
045ac3b5 JB |
1554 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1555 | struct intel_crtc_config *pipe_config) | |
1556 | { | |
1557 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1558 | u32 tmp, flags = 0; |
63000ef6 XZ |
1559 | struct drm_device *dev = encoder->base.dev; |
1560 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1561 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1562 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 1563 | int dotclock; |
045ac3b5 | 1564 | |
9ed109a7 DV |
1565 | tmp = I915_READ(intel_dp->output_reg); |
1566 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
1567 | pipe_config->has_audio = true; | |
1568 | ||
63000ef6 | 1569 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
1570 | if (tmp & DP_SYNC_HS_HIGH) |
1571 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1572 | else | |
1573 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1574 | |
63000ef6 XZ |
1575 | if (tmp & DP_SYNC_VS_HIGH) |
1576 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1577 | else | |
1578 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1579 | } else { | |
1580 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1581 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1582 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1583 | else | |
1584 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1585 | |
63000ef6 XZ |
1586 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1587 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1588 | else | |
1589 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1590 | } | |
045ac3b5 JB |
1591 | |
1592 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc | 1593 | |
eb14cb74 VS |
1594 | pipe_config->has_dp_encoder = true; |
1595 | ||
1596 | intel_dp_get_m_n(crtc, pipe_config); | |
1597 | ||
18442d08 | 1598 | if (port == PORT_A) { |
f1f644dc JB |
1599 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
1600 | pipe_config->port_clock = 162000; | |
1601 | else | |
1602 | pipe_config->port_clock = 270000; | |
1603 | } | |
18442d08 VS |
1604 | |
1605 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
1606 | &pipe_config->dp_m_n); | |
1607 | ||
1608 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
1609 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
1610 | ||
241bfc38 | 1611 | pipe_config->adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 1612 | |
c6cd2ee2 JN |
1613 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
1614 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1615 | /* | |
1616 | * This is a big fat ugly hack. | |
1617 | * | |
1618 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1619 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1620 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1621 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1622 | * max, not what it tells us to use. | |
1623 | * | |
1624 | * Note: This will still be broken if the eDP panel is not lit | |
1625 | * up by the BIOS, and thus we can't get the mode at module | |
1626 | * load. | |
1627 | */ | |
1628 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1629 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1630 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1631 | } | |
045ac3b5 JB |
1632 | } |
1633 | ||
34eb7579 | 1634 | static bool is_edp_psr(struct intel_dp *intel_dp) |
2293bb5c | 1635 | { |
34eb7579 | 1636 | return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; |
2293bb5c SK |
1637 | } |
1638 | ||
2b28bb1b RV |
1639 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1640 | { | |
1641 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1642 | ||
18b5992c | 1643 | if (!HAS_PSR(dev)) |
2b28bb1b RV |
1644 | return false; |
1645 | ||
18b5992c | 1646 | return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE; |
2b28bb1b RV |
1647 | } |
1648 | ||
1649 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1650 | struct edp_vsc_psr *vsc_psr) | |
1651 | { | |
1652 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1653 | struct drm_device *dev = dig_port->base.base.dev; | |
1654 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1655 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1656 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
1657 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
1658 | uint32_t *data = (uint32_t *) vsc_psr; | |
1659 | unsigned int i; | |
1660 | ||
1661 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
1662 | the video DIP being updated before program video DIP data buffer | |
1663 | registers for DIP being updated. */ | |
1664 | I915_WRITE(ctl_reg, 0); | |
1665 | POSTING_READ(ctl_reg); | |
1666 | ||
1667 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
1668 | if (i < sizeof(struct edp_vsc_psr)) | |
1669 | I915_WRITE(data_reg + i, *data++); | |
1670 | else | |
1671 | I915_WRITE(data_reg + i, 0); | |
1672 | } | |
1673 | ||
1674 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
1675 | POSTING_READ(ctl_reg); | |
1676 | } | |
1677 | ||
1678 | static void intel_edp_psr_setup(struct intel_dp *intel_dp) | |
1679 | { | |
1680 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1681 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1682 | struct edp_vsc_psr psr_vsc; | |
1683 | ||
2b28bb1b RV |
1684 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ |
1685 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
1686 | psr_vsc.sdp_header.HB0 = 0; | |
1687 | psr_vsc.sdp_header.HB1 = 0x7; | |
1688 | psr_vsc.sdp_header.HB2 = 0x2; | |
1689 | psr_vsc.sdp_header.HB3 = 0x8; | |
1690 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
1691 | ||
1692 | /* Avoid continuous PSR exit by masking memup and hpd */ | |
18b5992c | 1693 | I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP | |
0cc4b699 | 1694 | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); |
2b28bb1b RV |
1695 | } |
1696 | ||
1697 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
1698 | { | |
0e0ae652 RV |
1699 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1700 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b | 1701 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd | 1702 | uint32_t aux_clock_divider; |
2b28bb1b RV |
1703 | int precharge = 0x3; |
1704 | int msg_size = 5; /* Header(4) + Message(1) */ | |
0e0ae652 | 1705 | bool only_standby = false; |
2b28bb1b | 1706 | |
ec5b01dd DL |
1707 | aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0); |
1708 | ||
0e0ae652 RV |
1709 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) |
1710 | only_standby = true; | |
1711 | ||
2b28bb1b | 1712 | /* Enable PSR in sink */ |
0e0ae652 | 1713 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) |
9d1a1031 JN |
1714 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
1715 | DP_PSR_ENABLE & ~DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b | 1716 | else |
9d1a1031 JN |
1717 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
1718 | DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b RV |
1719 | |
1720 | /* Setup AUX registers */ | |
18b5992c BW |
1721 | I915_WRITE(EDP_PSR_AUX_DATA1(dev), EDP_PSR_DPCD_COMMAND); |
1722 | I915_WRITE(EDP_PSR_AUX_DATA2(dev), EDP_PSR_DPCD_NORMAL_OPERATION); | |
1723 | I915_WRITE(EDP_PSR_AUX_CTL(dev), | |
2b28bb1b RV |
1724 | DP_AUX_CH_CTL_TIME_OUT_400us | |
1725 | (msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
1726 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
1727 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
1728 | } | |
1729 | ||
1730 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
1731 | { | |
0e0ae652 RV |
1732 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1733 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b RV |
1734 | struct drm_i915_private *dev_priv = dev->dev_private; |
1735 | uint32_t max_sleep_time = 0x1f; | |
1736 | uint32_t idle_frames = 1; | |
1737 | uint32_t val = 0x0; | |
ed8546ac | 1738 | const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES; |
0e0ae652 RV |
1739 | bool only_standby = false; |
1740 | ||
1741 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) | |
1742 | only_standby = true; | |
2b28bb1b | 1743 | |
0e0ae652 | 1744 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) { |
2b28bb1b RV |
1745 | val |= EDP_PSR_LINK_STANDBY; |
1746 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
1747 | val |= EDP_PSR_TP1_TIME_0us; | |
1748 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
82c56254 | 1749 | val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0; |
2b28bb1b RV |
1750 | } else |
1751 | val |= EDP_PSR_LINK_DISABLE; | |
1752 | ||
18b5992c | 1753 | I915_WRITE(EDP_PSR_CTL(dev), val | |
24bd9bf5 | 1754 | (IS_BROADWELL(dev) ? 0 : link_entry_time) | |
2b28bb1b RV |
1755 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | |
1756 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
1757 | EDP_PSR_ENABLE); | |
1758 | } | |
1759 | ||
3f51e471 RV |
1760 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
1761 | { | |
1762 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1763 | struct drm_device *dev = dig_port->base.base.dev; | |
1764 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1765 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
1766 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2ff8fde1 | 1767 | struct drm_i915_gem_object *obj = intel_fb_obj(crtc->primary->fb); |
3f51e471 RV |
1768 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
1769 | ||
a031d709 RV |
1770 | dev_priv->psr.source_ok = false; |
1771 | ||
0e0ae652 RV |
1772 | if (!HAS_PSR(dev)) { |
1773 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
1774 | return false; | |
1775 | } | |
1776 | ||
1777 | if (IS_HASWELL(dev) && (intel_encoder->type != INTEL_OUTPUT_EDP || | |
1778 | dig_port->port != PORT_A)) { | |
3f51e471 | 1779 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); |
3f51e471 RV |
1780 | return false; |
1781 | } | |
1782 | ||
d330a953 | 1783 | if (!i915.enable_psr) { |
105b7c11 | 1784 | DRM_DEBUG_KMS("PSR disable by flag\n"); |
105b7c11 RV |
1785 | return false; |
1786 | } | |
1787 | ||
cd234b0b CW |
1788 | crtc = dig_port->base.base.crtc; |
1789 | if (crtc == NULL) { | |
1790 | DRM_DEBUG_KMS("crtc not active for PSR\n"); | |
cd234b0b CW |
1791 | return false; |
1792 | } | |
1793 | ||
1794 | intel_crtc = to_intel_crtc(crtc); | |
20ddf665 | 1795 | if (!intel_crtc_active(crtc)) { |
3f51e471 | 1796 | DRM_DEBUG_KMS("crtc not active for PSR\n"); |
3f51e471 RV |
1797 | return false; |
1798 | } | |
1799 | ||
1800 | if (obj->tiling_mode != I915_TILING_X || | |
1801 | obj->fence_reg == I915_FENCE_REG_NONE) { | |
1802 | DRM_DEBUG_KMS("PSR condition failed: fb not tiled or fenced\n"); | |
3f51e471 RV |
1803 | return false; |
1804 | } | |
1805 | ||
4c8c7000 RV |
1806 | /* Below limitations aren't valid for Broadwell */ |
1807 | if (IS_BROADWELL(dev)) | |
1808 | goto out; | |
1809 | ||
3f51e471 RV |
1810 | if (I915_READ(SPRCTL(intel_crtc->pipe)) & SPRITE_ENABLE) { |
1811 | DRM_DEBUG_KMS("PSR condition failed: Sprite is Enabled\n"); | |
3f51e471 RV |
1812 | return false; |
1813 | } | |
1814 | ||
1815 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & | |
1816 | S3D_ENABLE) { | |
1817 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
3f51e471 RV |
1818 | return false; |
1819 | } | |
1820 | ||
ca73b4f0 | 1821 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { |
3f51e471 | 1822 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); |
3f51e471 RV |
1823 | return false; |
1824 | } | |
1825 | ||
4c8c7000 | 1826 | out: |
a031d709 | 1827 | dev_priv->psr.source_ok = true; |
3f51e471 RV |
1828 | return true; |
1829 | } | |
1830 | ||
3d739d92 | 1831 | static void intel_edp_psr_do_enable(struct intel_dp *intel_dp) |
2b28bb1b | 1832 | { |
7c8f8a70 RV |
1833 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1834 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
1835 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2b28bb1b | 1836 | |
7c8f8a70 | 1837 | if (intel_edp_is_psr_enabled(dev)) |
2b28bb1b RV |
1838 | return; |
1839 | ||
2b28bb1b RV |
1840 | /* Enable PSR on the panel */ |
1841 | intel_edp_psr_enable_sink(intel_dp); | |
1842 | ||
1843 | /* Enable PSR on the host */ | |
1844 | intel_edp_psr_enable_source(intel_dp); | |
7c8f8a70 RV |
1845 | |
1846 | dev_priv->psr.enabled = true; | |
1847 | dev_priv->psr.active = true; | |
2b28bb1b RV |
1848 | } |
1849 | ||
3d739d92 RV |
1850 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
1851 | { | |
1852 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1853 | ||
4704c573 RV |
1854 | if (!HAS_PSR(dev)) { |
1855 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
1856 | return; | |
1857 | } | |
1858 | ||
34eb7579 RV |
1859 | if (!is_edp_psr(intel_dp)) { |
1860 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
1861 | return; | |
1862 | } | |
1863 | ||
16487254 RV |
1864 | /* Setup PSR once */ |
1865 | intel_edp_psr_setup(intel_dp); | |
1866 | ||
7c8f8a70 | 1867 | if (intel_edp_psr_match_conditions(intel_dp)) |
3d739d92 RV |
1868 | intel_edp_psr_do_enable(intel_dp); |
1869 | } | |
1870 | ||
2b28bb1b RV |
1871 | void intel_edp_psr_disable(struct intel_dp *intel_dp) |
1872 | { | |
1873 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1874 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1875 | ||
7c8f8a70 | 1876 | if (!dev_priv->psr.enabled) |
2b28bb1b RV |
1877 | return; |
1878 | ||
18b5992c BW |
1879 | I915_WRITE(EDP_PSR_CTL(dev), |
1880 | I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE); | |
2b28bb1b RV |
1881 | |
1882 | /* Wait till PSR is idle */ | |
18b5992c | 1883 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) & |
2b28bb1b RV |
1884 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) |
1885 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
7c8f8a70 RV |
1886 | |
1887 | dev_priv->psr.enabled = false; | |
2b28bb1b RV |
1888 | } |
1889 | ||
f02a326e | 1890 | static void intel_edp_psr_work(struct work_struct *work) |
7c8f8a70 RV |
1891 | { |
1892 | struct drm_i915_private *dev_priv = | |
1893 | container_of(work, typeof(*dev_priv), psr.work.work); | |
1894 | struct drm_device *dev = dev_priv->dev; | |
1895 | struct intel_encoder *encoder; | |
1896 | struct intel_dp *intel_dp = NULL; | |
1897 | ||
3d739d92 RV |
1898 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) |
1899 | if (encoder->type == INTEL_OUTPUT_EDP) { | |
1900 | intel_dp = enc_to_intel_dp(&encoder->base); | |
1901 | ||
3d739d92 RV |
1902 | if (!intel_edp_psr_match_conditions(intel_dp)) |
1903 | intel_edp_psr_disable(intel_dp); | |
1904 | else | |
7c8f8a70 | 1905 | intel_edp_psr_do_enable(intel_dp); |
3d739d92 RV |
1906 | } |
1907 | } | |
1908 | ||
f02a326e | 1909 | static void intel_edp_psr_inactivate(struct drm_device *dev) |
7c8f8a70 RV |
1910 | { |
1911 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7c8f8a70 | 1912 | |
77c70c56 | 1913 | dev_priv->psr.active = false; |
7c8f8a70 | 1914 | |
77c70c56 DV |
1915 | I915_WRITE(EDP_PSR_CTL(dev), I915_READ(EDP_PSR_CTL(dev)) |
1916 | & ~EDP_PSR_ENABLE); | |
7c8f8a70 RV |
1917 | } |
1918 | ||
3108e99e | 1919 | void intel_edp_psr_exit(struct drm_device *dev) |
7c8f8a70 RV |
1920 | { |
1921 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1922 | ||
1923 | if (!HAS_PSR(dev)) | |
1924 | return; | |
1925 | ||
9a603f48 | 1926 | if (!dev_priv->psr.enabled) |
7c8f8a70 RV |
1927 | return; |
1928 | ||
1929 | cancel_delayed_work_sync(&dev_priv->psr.work); | |
1930 | ||
1931 | if (dev_priv->psr.active) | |
1932 | intel_edp_psr_inactivate(dev); | |
1933 | ||
3108e99e DV |
1934 | schedule_delayed_work(&dev_priv->psr.work, |
1935 | msecs_to_jiffies(100)); | |
7c8f8a70 RV |
1936 | } |
1937 | ||
1938 | void intel_edp_psr_init(struct drm_device *dev) | |
1939 | { | |
1940 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1941 | ||
1942 | if (!HAS_PSR(dev)) | |
1943 | return; | |
1944 | ||
1945 | INIT_DELAYED_WORK(&dev_priv->psr.work, intel_edp_psr_work); | |
1946 | } | |
1947 | ||
e8cb4558 | 1948 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1949 | { |
e8cb4558 | 1950 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 ID |
1951 | enum port port = dp_to_dig_port(intel_dp)->port; |
1952 | struct drm_device *dev = encoder->base.dev; | |
6cb49835 DV |
1953 | |
1954 | /* Make sure the panel is off before trying to change the mode. But also | |
1955 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 1956 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 1957 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 1958 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 1959 | intel_edp_panel_off(intel_dp); |
3739850b DV |
1960 | |
1961 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
982a3866 | 1962 | if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |
3739850b | 1963 | intel_dp_link_down(intel_dp); |
d240f20f JB |
1964 | } |
1965 | ||
49277c31 | 1966 | static void g4x_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1967 | { |
2bd2ad64 | 1968 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 1969 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 1970 | |
49277c31 VS |
1971 | if (port != PORT_A) |
1972 | return; | |
1973 | ||
1974 | intel_dp_link_down(intel_dp); | |
1975 | ironlake_edp_pll_off(intel_dp); | |
1976 | } | |
1977 | ||
1978 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
1979 | { | |
1980 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
1981 | ||
1982 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
1983 | } |
1984 | ||
580d3811 VS |
1985 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
1986 | { | |
1987 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
1988 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
1989 | struct drm_device *dev = encoder->base.dev; | |
1990 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1991 | struct intel_crtc *intel_crtc = | |
1992 | to_intel_crtc(encoder->base.crtc); | |
1993 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
1994 | enum pipe pipe = intel_crtc->pipe; | |
1995 | u32 val; | |
1996 | ||
1997 | intel_dp_link_down(intel_dp); | |
1998 | ||
1999 | mutex_lock(&dev_priv->dpio_lock); | |
2000 | ||
2001 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2002 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2003 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2004 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2005 | |
97fd4d5c VS |
2006 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2007 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2008 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2009 | ||
2010 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2011 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2012 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2013 | ||
2014 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2015 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2016 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2017 | |
2018 | mutex_unlock(&dev_priv->dpio_lock); | |
2019 | } | |
2020 | ||
e8cb4558 | 2021 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2022 | { |
e8cb4558 DV |
2023 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2024 | struct drm_device *dev = encoder->base.dev; | |
2025 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2026 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 2027 | |
0c33d8d7 DV |
2028 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2029 | return; | |
5d613501 | 2030 | |
24f3e092 | 2031 | intel_edp_panel_vdd_on(intel_dp); |
f01eca2e | 2032 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2033 | intel_dp_start_link_train(intel_dp); |
4be73780 DV |
2034 | intel_edp_panel_on(intel_dp); |
2035 | edp_panel_vdd_off(intel_dp, true); | |
33a34e4e | 2036 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2037 | intel_dp_stop_link_train(intel_dp); |
ab1f90f9 | 2038 | } |
89b667f8 | 2039 | |
ecff4f3b JN |
2040 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2041 | { | |
828f5c6e JN |
2042 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2043 | ||
ecff4f3b | 2044 | intel_enable_dp(encoder); |
4be73780 | 2045 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2046 | } |
89b667f8 | 2047 | |
ab1f90f9 JN |
2048 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2049 | { | |
828f5c6e JN |
2050 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2051 | ||
4be73780 | 2052 | intel_edp_backlight_on(intel_dp); |
d240f20f JB |
2053 | } |
2054 | ||
ecff4f3b | 2055 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2056 | { |
2057 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2058 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2059 | ||
8ac33ed3 DV |
2060 | intel_dp_prepare(encoder); |
2061 | ||
d41f1efb DV |
2062 | /* Only ilk+ has port A */ |
2063 | if (dport->port == PORT_A) { | |
2064 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2065 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2066 | } |
ab1f90f9 JN |
2067 | } |
2068 | ||
2069 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) | |
a4fc5ed6 | 2070 | { |
2bd2ad64 | 2071 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2072 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2073 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2074 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2075 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2076 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 | 2077 | int pipe = intel_crtc->pipe; |
bf13e81b | 2078 | struct edp_power_seq power_seq; |
ab1f90f9 | 2079 | u32 val; |
a4fc5ed6 | 2080 | |
ab1f90f9 | 2081 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2082 | |
ab3c759a | 2083 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2084 | val = 0; |
2085 | if (pipe) | |
2086 | val |= (1<<21); | |
2087 | else | |
2088 | val &= ~(1<<21); | |
2089 | val |= 0x001000c4; | |
ab3c759a CML |
2090 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2091 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2092 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2093 | |
ab1f90f9 JN |
2094 | mutex_unlock(&dev_priv->dpio_lock); |
2095 | ||
2cac613b ID |
2096 | if (is_edp(intel_dp)) { |
2097 | /* init power sequencer on this pipe and port */ | |
2098 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
2099 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
2100 | &power_seq); | |
2101 | } | |
bf13e81b | 2102 | |
ab1f90f9 JN |
2103 | intel_enable_dp(encoder); |
2104 | ||
e4607fcf | 2105 | vlv_wait_port_ready(dev_priv, dport); |
89b667f8 JB |
2106 | } |
2107 | ||
ecff4f3b | 2108 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2109 | { |
2110 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2111 | struct drm_device *dev = encoder->base.dev; | |
2112 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2113 | struct intel_crtc *intel_crtc = |
2114 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2115 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2116 | int pipe = intel_crtc->pipe; |
89b667f8 | 2117 | |
8ac33ed3 DV |
2118 | intel_dp_prepare(encoder); |
2119 | ||
89b667f8 | 2120 | /* Program Tx lane resets to default */ |
0980a60f | 2121 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2122 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2123 | DPIO_PCS_TX_LANE2_RESET | |
2124 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2125 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2126 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2127 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2128 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2129 | DPIO_PCS_CLK_SOFT_RESET); | |
2130 | ||
2131 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2132 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2133 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2134 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2135 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2136 | } |
2137 | ||
e4a1d846 CML |
2138 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2139 | { | |
2140 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2141 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2142 | struct drm_device *dev = encoder->base.dev; | |
2143 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2144 | struct edp_power_seq power_seq; | |
2145 | struct intel_crtc *intel_crtc = | |
2146 | to_intel_crtc(encoder->base.crtc); | |
2147 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2148 | int pipe = intel_crtc->pipe; | |
2149 | int data, i; | |
949c1d43 | 2150 | u32 val; |
e4a1d846 | 2151 | |
e4a1d846 | 2152 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 VS |
2153 | |
2154 | /* Deassert soft data lane reset*/ | |
97fd4d5c | 2155 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2156 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2157 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2158 | ||
2159 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2160 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2161 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2162 | ||
2163 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2164 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2165 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2166 | |
97fd4d5c | 2167 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2168 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2169 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2170 | |
2171 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2172 | for (i = 0; i < 4; i++) { |
2173 | /* Set the latency optimal bit */ | |
2174 | data = (i == 1) ? 0x0 : 0x6; | |
2175 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2176 | data << DPIO_FRC_LATENCY_SHFIT); | |
2177 | ||
2178 | /* Set the upar bit */ | |
2179 | data = (i == 1) ? 0x0 : 0x1; | |
2180 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2181 | data << DPIO_UPAR_SHIFT); | |
2182 | } | |
2183 | ||
2184 | /* Data lane stagger programming */ | |
2185 | /* FIXME: Fix up value only after power analysis */ | |
2186 | ||
2187 | mutex_unlock(&dev_priv->dpio_lock); | |
2188 | ||
2189 | if (is_edp(intel_dp)) { | |
2190 | /* init power sequencer on this pipe and port */ | |
2191 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
2192 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
2193 | &power_seq); | |
2194 | } | |
2195 | ||
2196 | intel_enable_dp(encoder); | |
2197 | ||
2198 | vlv_wait_port_ready(dev_priv, dport); | |
2199 | } | |
2200 | ||
9197c88b VS |
2201 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2202 | { | |
2203 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2204 | struct drm_device *dev = encoder->base.dev; | |
2205 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2206 | struct intel_crtc *intel_crtc = | |
2207 | to_intel_crtc(encoder->base.crtc); | |
2208 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2209 | enum pipe pipe = intel_crtc->pipe; | |
2210 | u32 val; | |
2211 | ||
2212 | mutex_lock(&dev_priv->dpio_lock); | |
2213 | ||
b9e5ac3c VS |
2214 | /* program left/right clock distribution */ |
2215 | if (pipe != PIPE_B) { | |
2216 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2217 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2218 | if (ch == DPIO_CH0) | |
2219 | val |= CHV_BUFLEFTENA1_FORCE; | |
2220 | if (ch == DPIO_CH1) | |
2221 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2222 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2223 | } else { | |
2224 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2225 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2226 | if (ch == DPIO_CH0) | |
2227 | val |= CHV_BUFLEFTENA2_FORCE; | |
2228 | if (ch == DPIO_CH1) | |
2229 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2230 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2231 | } | |
2232 | ||
9197c88b VS |
2233 | /* program clock channel usage */ |
2234 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2235 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2236 | if (pipe != PIPE_B) | |
2237 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2238 | else | |
2239 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2240 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2241 | ||
2242 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2243 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2244 | if (pipe != PIPE_B) | |
2245 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2246 | else | |
2247 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2248 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2249 | ||
2250 | /* | |
2251 | * This a a bit weird since generally CL | |
2252 | * matches the pipe, but here we need to | |
2253 | * pick the CL based on the port. | |
2254 | */ | |
2255 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2256 | if (pipe != PIPE_B) | |
2257 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2258 | else | |
2259 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2260 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2261 | ||
2262 | mutex_unlock(&dev_priv->dpio_lock); | |
2263 | } | |
2264 | ||
a4fc5ed6 | 2265 | /* |
df0c237d JB |
2266 | * Native read with retry for link status and receiver capability reads for |
2267 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2268 | * |
2269 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2270 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2271 | */ |
9d1a1031 JN |
2272 | static ssize_t |
2273 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2274 | void *buffer, size_t size) | |
a4fc5ed6 | 2275 | { |
9d1a1031 JN |
2276 | ssize_t ret; |
2277 | int i; | |
61da5fab | 2278 | |
61da5fab | 2279 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2280 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2281 | if (ret == size) | |
2282 | return ret; | |
61da5fab JB |
2283 | msleep(1); |
2284 | } | |
a4fc5ed6 | 2285 | |
9d1a1031 | 2286 | return ret; |
a4fc5ed6 KP |
2287 | } |
2288 | ||
2289 | /* | |
2290 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2291 | * link status information | |
2292 | */ | |
2293 | static bool | |
93f62dad | 2294 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2295 | { |
9d1a1031 JN |
2296 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2297 | DP_LANE0_1_STATUS, | |
2298 | link_status, | |
2299 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2300 | } |
2301 | ||
1100244e | 2302 | /* These are source-specific values. */ |
a4fc5ed6 | 2303 | static uint8_t |
1a2eb460 | 2304 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2305 | { |
30add22d | 2306 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2307 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2308 | |
9576c27f | 2309 | if (IS_VALLEYVIEW(dev)) |
e2fa6fba | 2310 | return DP_TRAIN_VOLTAGE_SWING_1200; |
bc7d38a4 | 2311 | else if (IS_GEN7(dev) && port == PORT_A) |
1a2eb460 | 2312 | return DP_TRAIN_VOLTAGE_SWING_800; |
bc7d38a4 | 2313 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
1a2eb460 KP |
2314 | return DP_TRAIN_VOLTAGE_SWING_1200; |
2315 | else | |
2316 | return DP_TRAIN_VOLTAGE_SWING_800; | |
2317 | } | |
2318 | ||
2319 | static uint8_t | |
2320 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2321 | { | |
30add22d | 2322 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2323 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2324 | |
9576c27f | 2325 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
d6c0d722 PZ |
2326 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
2327 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2328 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
2329 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2330 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2331 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2332 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2333 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2334 | default: | |
2335 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2336 | } | |
e2fa6fba P |
2337 | } else if (IS_VALLEYVIEW(dev)) { |
2338 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2339 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2340 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
2341 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2342 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2343 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2344 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2345 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2346 | default: | |
2347 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2348 | } | |
bc7d38a4 | 2349 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
2350 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
2351 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2352 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2353 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2354 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2355 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2356 | default: | |
2357 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2358 | } | |
2359 | } else { | |
2360 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2361 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2362 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2363 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2364 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2365 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2366 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2367 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2368 | default: | |
2369 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2370 | } | |
a4fc5ed6 KP |
2371 | } |
2372 | } | |
2373 | ||
e2fa6fba P |
2374 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2375 | { | |
2376 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2377 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2378 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2379 | struct intel_crtc *intel_crtc = |
2380 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2381 | unsigned long demph_reg_value, preemph_reg_value, |
2382 | uniqtranscale_reg_value; | |
2383 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2384 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2385 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2386 | |
2387 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
2388 | case DP_TRAIN_PRE_EMPHASIS_0: | |
2389 | preemph_reg_value = 0x0004000; | |
2390 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2391 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2392 | demph_reg_value = 0x2B405555; | |
2393 | uniqtranscale_reg_value = 0x552AB83A; | |
2394 | break; | |
2395 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2396 | demph_reg_value = 0x2B404040; | |
2397 | uniqtranscale_reg_value = 0x5548B83A; | |
2398 | break; | |
2399 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2400 | demph_reg_value = 0x2B245555; | |
2401 | uniqtranscale_reg_value = 0x5560B83A; | |
2402 | break; | |
2403 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2404 | demph_reg_value = 0x2B405555; | |
2405 | uniqtranscale_reg_value = 0x5598DA3A; | |
2406 | break; | |
2407 | default: | |
2408 | return 0; | |
2409 | } | |
2410 | break; | |
2411 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2412 | preemph_reg_value = 0x0002000; | |
2413 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2414 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2415 | demph_reg_value = 0x2B404040; | |
2416 | uniqtranscale_reg_value = 0x5552B83A; | |
2417 | break; | |
2418 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2419 | demph_reg_value = 0x2B404848; | |
2420 | uniqtranscale_reg_value = 0x5580B83A; | |
2421 | break; | |
2422 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2423 | demph_reg_value = 0x2B404040; | |
2424 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2425 | break; | |
2426 | default: | |
2427 | return 0; | |
2428 | } | |
2429 | break; | |
2430 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2431 | preemph_reg_value = 0x0000000; | |
2432 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2433 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2434 | demph_reg_value = 0x2B305555; | |
2435 | uniqtranscale_reg_value = 0x5570B83A; | |
2436 | break; | |
2437 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2438 | demph_reg_value = 0x2B2B4040; | |
2439 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2440 | break; | |
2441 | default: | |
2442 | return 0; | |
2443 | } | |
2444 | break; | |
2445 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2446 | preemph_reg_value = 0x0006000; | |
2447 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2448 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2449 | demph_reg_value = 0x1B405555; | |
2450 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2451 | break; | |
2452 | default: | |
2453 | return 0; | |
2454 | } | |
2455 | break; | |
2456 | default: | |
2457 | return 0; | |
2458 | } | |
2459 | ||
0980a60f | 2460 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
2461 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
2462 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
2463 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 2464 | uniqtranscale_reg_value); |
ab3c759a CML |
2465 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
2466 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
2467 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
2468 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 2469 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
2470 | |
2471 | return 0; | |
2472 | } | |
2473 | ||
e4a1d846 CML |
2474 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
2475 | { | |
2476 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2477 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2478 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2479 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 2480 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
2481 | uint8_t train_set = intel_dp->train_set[0]; |
2482 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
2483 | enum pipe pipe = intel_crtc->pipe; |
2484 | int i; | |
e4a1d846 CML |
2485 | |
2486 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
2487 | case DP_TRAIN_PRE_EMPHASIS_0: | |
2488 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2489 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2490 | deemph_reg_value = 128; | |
2491 | margin_reg_value = 52; | |
2492 | break; | |
2493 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2494 | deemph_reg_value = 128; | |
2495 | margin_reg_value = 77; | |
2496 | break; | |
2497 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2498 | deemph_reg_value = 128; | |
2499 | margin_reg_value = 102; | |
2500 | break; | |
2501 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2502 | deemph_reg_value = 128; | |
2503 | margin_reg_value = 154; | |
2504 | /* FIXME extra to set for 1200 */ | |
2505 | break; | |
2506 | default: | |
2507 | return 0; | |
2508 | } | |
2509 | break; | |
2510 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2511 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2512 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2513 | deemph_reg_value = 85; | |
2514 | margin_reg_value = 78; | |
2515 | break; | |
2516 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2517 | deemph_reg_value = 85; | |
2518 | margin_reg_value = 116; | |
2519 | break; | |
2520 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2521 | deemph_reg_value = 85; | |
2522 | margin_reg_value = 154; | |
2523 | break; | |
2524 | default: | |
2525 | return 0; | |
2526 | } | |
2527 | break; | |
2528 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2529 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2530 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2531 | deemph_reg_value = 64; | |
2532 | margin_reg_value = 104; | |
2533 | break; | |
2534 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2535 | deemph_reg_value = 64; | |
2536 | margin_reg_value = 154; | |
2537 | break; | |
2538 | default: | |
2539 | return 0; | |
2540 | } | |
2541 | break; | |
2542 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2543 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2544 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2545 | deemph_reg_value = 43; | |
2546 | margin_reg_value = 154; | |
2547 | break; | |
2548 | default: | |
2549 | return 0; | |
2550 | } | |
2551 | break; | |
2552 | default: | |
2553 | return 0; | |
2554 | } | |
2555 | ||
2556 | mutex_lock(&dev_priv->dpio_lock); | |
2557 | ||
2558 | /* Clear calc init */ | |
1966e59e VS |
2559 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
2560 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
2561 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
2562 | ||
2563 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
2564 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
2565 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
2566 | |
2567 | /* Program swing deemph */ | |
f72df8db VS |
2568 | for (i = 0; i < 4; i++) { |
2569 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
2570 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
2571 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
2572 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
2573 | } | |
e4a1d846 CML |
2574 | |
2575 | /* Program swing margin */ | |
f72df8db VS |
2576 | for (i = 0; i < 4; i++) { |
2577 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
2578 | val &= ~DPIO_SWING_MARGIN_MASK; | |
2579 | val |= margin_reg_value << DPIO_SWING_MARGIN_SHIFT; | |
2580 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
2581 | } | |
e4a1d846 CML |
2582 | |
2583 | /* Disable unique transition scale */ | |
f72df8db VS |
2584 | for (i = 0; i < 4; i++) { |
2585 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
2586 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
2587 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
2588 | } | |
e4a1d846 CML |
2589 | |
2590 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
2591 | == DP_TRAIN_PRE_EMPHASIS_0) && | |
2592 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) | |
2593 | == DP_TRAIN_VOLTAGE_SWING_1200)) { | |
2594 | ||
2595 | /* | |
2596 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
2597 | * for ch1. Might be a typo in the doc. | |
2598 | * For now, for this unique transition scale selection, set bit | |
2599 | * 27 for ch0 and ch1. | |
2600 | */ | |
f72df8db VS |
2601 | for (i = 0; i < 4; i++) { |
2602 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
2603 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
2604 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
2605 | } | |
e4a1d846 | 2606 | |
f72df8db VS |
2607 | for (i = 0; i < 4; i++) { |
2608 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
2609 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
2610 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
2611 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
2612 | } | |
e4a1d846 CML |
2613 | } |
2614 | ||
2615 | /* Start swing calculation */ | |
1966e59e VS |
2616 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
2617 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
2618 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
2619 | ||
2620 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
2621 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
2622 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
2623 | |
2624 | /* LRC Bypass */ | |
2625 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
2626 | val |= DPIO_LRC_BYPASS; | |
2627 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
2628 | ||
2629 | mutex_unlock(&dev_priv->dpio_lock); | |
2630 | ||
2631 | return 0; | |
2632 | } | |
2633 | ||
a4fc5ed6 | 2634 | static void |
0301b3ac JN |
2635 | intel_get_adjust_train(struct intel_dp *intel_dp, |
2636 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
2637 | { |
2638 | uint8_t v = 0; | |
2639 | uint8_t p = 0; | |
2640 | int lane; | |
1a2eb460 KP |
2641 | uint8_t voltage_max; |
2642 | uint8_t preemph_max; | |
a4fc5ed6 | 2643 | |
33a34e4e | 2644 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
2645 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
2646 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
2647 | |
2648 | if (this_v > v) | |
2649 | v = this_v; | |
2650 | if (this_p > p) | |
2651 | p = this_p; | |
2652 | } | |
2653 | ||
1a2eb460 | 2654 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
2655 | if (v >= voltage_max) |
2656 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 2657 | |
1a2eb460 KP |
2658 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
2659 | if (p >= preemph_max) | |
2660 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
2661 | |
2662 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 2663 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
2664 | } |
2665 | ||
2666 | static uint32_t | |
f0a3424e | 2667 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2668 | { |
3cf2efb1 | 2669 | uint32_t signal_levels = 0; |
a4fc5ed6 | 2670 | |
3cf2efb1 | 2671 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
a4fc5ed6 KP |
2672 | case DP_TRAIN_VOLTAGE_SWING_400: |
2673 | default: | |
2674 | signal_levels |= DP_VOLTAGE_0_4; | |
2675 | break; | |
2676 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2677 | signal_levels |= DP_VOLTAGE_0_6; | |
2678 | break; | |
2679 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2680 | signal_levels |= DP_VOLTAGE_0_8; | |
2681 | break; | |
2682 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2683 | signal_levels |= DP_VOLTAGE_1_2; | |
2684 | break; | |
2685 | } | |
3cf2efb1 | 2686 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
a4fc5ed6 KP |
2687 | case DP_TRAIN_PRE_EMPHASIS_0: |
2688 | default: | |
2689 | signal_levels |= DP_PRE_EMPHASIS_0; | |
2690 | break; | |
2691 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2692 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
2693 | break; | |
2694 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2695 | signal_levels |= DP_PRE_EMPHASIS_6; | |
2696 | break; | |
2697 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2698 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
2699 | break; | |
2700 | } | |
2701 | return signal_levels; | |
2702 | } | |
2703 | ||
e3421a18 ZW |
2704 | /* Gen6's DP voltage swing and pre-emphasis control */ |
2705 | static uint32_t | |
2706 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
2707 | { | |
3c5a62b5 YL |
2708 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2709 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2710 | switch (signal_levels) { | |
e3421a18 | 2711 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2712 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2713 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
2714 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2715 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; | |
e3421a18 | 2716 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: |
3c5a62b5 YL |
2717 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: |
2718 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; | |
e3421a18 | 2719 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: |
3c5a62b5 YL |
2720 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: |
2721 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; | |
e3421a18 | 2722 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2723 | case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: |
2724 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; | |
e3421a18 | 2725 | default: |
3c5a62b5 YL |
2726 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
2727 | "0x%x\n", signal_levels); | |
2728 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
2729 | } |
2730 | } | |
2731 | ||
1a2eb460 KP |
2732 | /* Gen7's DP voltage swing and pre-emphasis control */ |
2733 | static uint32_t | |
2734 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
2735 | { | |
2736 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
2737 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2738 | switch (signal_levels) { | |
2739 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2740 | return EDP_LINK_TRAIN_400MV_0DB_IVB; | |
2741 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2742 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; | |
2743 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2744 | return EDP_LINK_TRAIN_400MV_6DB_IVB; | |
2745 | ||
2746 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: | |
2747 | return EDP_LINK_TRAIN_600MV_0DB_IVB; | |
2748 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2749 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; | |
2750 | ||
2751 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
2752 | return EDP_LINK_TRAIN_800MV_0DB_IVB; | |
2753 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2754 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; | |
2755 | ||
2756 | default: | |
2757 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2758 | "0x%x\n", signal_levels); | |
2759 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
2760 | } | |
2761 | } | |
2762 | ||
d6c0d722 PZ |
2763 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
2764 | static uint32_t | |
f0a3424e | 2765 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2766 | { |
d6c0d722 PZ |
2767 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2768 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2769 | switch (signal_levels) { | |
2770 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2771 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
2772 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2773 | return DDI_BUF_EMP_400MV_3_5DB_HSW; | |
2774 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2775 | return DDI_BUF_EMP_400MV_6DB_HSW; | |
2776 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5: | |
2777 | return DDI_BUF_EMP_400MV_9_5DB_HSW; | |
a4fc5ed6 | 2778 | |
d6c0d722 PZ |
2779 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2780 | return DDI_BUF_EMP_600MV_0DB_HSW; | |
2781 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2782 | return DDI_BUF_EMP_600MV_3_5DB_HSW; | |
2783 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: | |
2784 | return DDI_BUF_EMP_600MV_6DB_HSW; | |
a4fc5ed6 | 2785 | |
d6c0d722 PZ |
2786 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
2787 | return DDI_BUF_EMP_800MV_0DB_HSW; | |
2788 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2789 | return DDI_BUF_EMP_800MV_3_5DB_HSW; | |
2790 | default: | |
2791 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2792 | "0x%x\n", signal_levels); | |
2793 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
a4fc5ed6 | 2794 | } |
a4fc5ed6 KP |
2795 | } |
2796 | ||
f0a3424e PZ |
2797 | /* Properly updates "DP" with the correct signal levels. */ |
2798 | static void | |
2799 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
2800 | { | |
2801 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 2802 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
2803 | struct drm_device *dev = intel_dig_port->base.base.dev; |
2804 | uint32_t signal_levels, mask; | |
2805 | uint8_t train_set = intel_dp->train_set[0]; | |
2806 | ||
9576c27f | 2807 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
f0a3424e PZ |
2808 | signal_levels = intel_hsw_signal_levels(train_set); |
2809 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
2810 | } else if (IS_CHERRYVIEW(dev)) { |
2811 | signal_levels = intel_chv_signal_levels(intel_dp); | |
2812 | mask = 0; | |
e2fa6fba P |
2813 | } else if (IS_VALLEYVIEW(dev)) { |
2814 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
2815 | mask = 0; | |
bc7d38a4 | 2816 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
2817 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
2818 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 2819 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
2820 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
2821 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
2822 | } else { | |
2823 | signal_levels = intel_gen4_signal_levels(train_set); | |
2824 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
2825 | } | |
2826 | ||
2827 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
2828 | ||
2829 | *DP = (*DP & ~mask) | signal_levels; | |
2830 | } | |
2831 | ||
a4fc5ed6 | 2832 | static bool |
ea5b213a | 2833 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 2834 | uint32_t *DP, |
58e10eb9 | 2835 | uint8_t dp_train_pat) |
a4fc5ed6 | 2836 | { |
174edf1f PZ |
2837 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2838 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 2839 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 2840 | enum port port = intel_dig_port->port; |
2cdfe6c8 JN |
2841 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
2842 | int ret, len; | |
a4fc5ed6 | 2843 | |
22b8bf17 | 2844 | if (HAS_DDI(dev)) { |
3ab9c637 | 2845 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
d6c0d722 PZ |
2846 | |
2847 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2848 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2849 | else | |
2850 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2851 | ||
2852 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2853 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2854 | case DP_TRAINING_PATTERN_DISABLE: | |
d6c0d722 PZ |
2855 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
2856 | ||
2857 | break; | |
2858 | case DP_TRAINING_PATTERN_1: | |
2859 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2860 | break; | |
2861 | case DP_TRAINING_PATTERN_2: | |
2862 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2863 | break; | |
2864 | case DP_TRAINING_PATTERN_3: | |
2865 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2866 | break; | |
2867 | } | |
174edf1f | 2868 | I915_WRITE(DP_TP_CTL(port), temp); |
d6c0d722 | 2869 | |
bc7d38a4 | 2870 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
70aff66c | 2871 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
47ea7542 PZ |
2872 | |
2873 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2874 | case DP_TRAINING_PATTERN_DISABLE: | |
70aff66c | 2875 | *DP |= DP_LINK_TRAIN_OFF_CPT; |
47ea7542 PZ |
2876 | break; |
2877 | case DP_TRAINING_PATTERN_1: | |
70aff66c | 2878 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; |
47ea7542 PZ |
2879 | break; |
2880 | case DP_TRAINING_PATTERN_2: | |
70aff66c | 2881 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
47ea7542 PZ |
2882 | break; |
2883 | case DP_TRAINING_PATTERN_3: | |
2884 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
70aff66c | 2885 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
47ea7542 PZ |
2886 | break; |
2887 | } | |
2888 | ||
2889 | } else { | |
70aff66c | 2890 | *DP &= ~DP_LINK_TRAIN_MASK; |
47ea7542 PZ |
2891 | |
2892 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2893 | case DP_TRAINING_PATTERN_DISABLE: | |
70aff66c | 2894 | *DP |= DP_LINK_TRAIN_OFF; |
47ea7542 PZ |
2895 | break; |
2896 | case DP_TRAINING_PATTERN_1: | |
70aff66c | 2897 | *DP |= DP_LINK_TRAIN_PAT_1; |
47ea7542 PZ |
2898 | break; |
2899 | case DP_TRAINING_PATTERN_2: | |
70aff66c | 2900 | *DP |= DP_LINK_TRAIN_PAT_2; |
47ea7542 PZ |
2901 | break; |
2902 | case DP_TRAINING_PATTERN_3: | |
2903 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
70aff66c | 2904 | *DP |= DP_LINK_TRAIN_PAT_2; |
47ea7542 PZ |
2905 | break; |
2906 | } | |
2907 | } | |
2908 | ||
70aff66c | 2909 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 2910 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 2911 | |
2cdfe6c8 JN |
2912 | buf[0] = dp_train_pat; |
2913 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 2914 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
2915 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
2916 | len = 1; | |
2917 | } else { | |
2918 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
2919 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
2920 | len = intel_dp->lane_count + 1; | |
47ea7542 | 2921 | } |
a4fc5ed6 | 2922 | |
9d1a1031 JN |
2923 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
2924 | buf, len); | |
2cdfe6c8 JN |
2925 | |
2926 | return ret == len; | |
a4fc5ed6 KP |
2927 | } |
2928 | ||
70aff66c JN |
2929 | static bool |
2930 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
2931 | uint8_t dp_train_pat) | |
2932 | { | |
953d22e8 | 2933 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
2934 | intel_dp_set_signal_levels(intel_dp, DP); |
2935 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
2936 | } | |
2937 | ||
2938 | static bool | |
2939 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 2940 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
2941 | { |
2942 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2943 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2944 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2945 | int ret; | |
2946 | ||
2947 | intel_get_adjust_train(intel_dp, link_status); | |
2948 | intel_dp_set_signal_levels(intel_dp, DP); | |
2949 | ||
2950 | I915_WRITE(intel_dp->output_reg, *DP); | |
2951 | POSTING_READ(intel_dp->output_reg); | |
2952 | ||
9d1a1031 JN |
2953 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
2954 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
2955 | |
2956 | return ret == intel_dp->lane_count; | |
2957 | } | |
2958 | ||
3ab9c637 ID |
2959 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
2960 | { | |
2961 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2962 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2963 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2964 | enum port port = intel_dig_port->port; | |
2965 | uint32_t val; | |
2966 | ||
2967 | if (!HAS_DDI(dev)) | |
2968 | return; | |
2969 | ||
2970 | val = I915_READ(DP_TP_CTL(port)); | |
2971 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2972 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
2973 | I915_WRITE(DP_TP_CTL(port), val); | |
2974 | ||
2975 | /* | |
2976 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
2977 | * we need to set idle transmission mode is to work around a HW issue | |
2978 | * where we enable the pipe while not in idle link-training mode. | |
2979 | * In this case there is requirement to wait for a minimum number of | |
2980 | * idle patterns to be sent. | |
2981 | */ | |
2982 | if (port == PORT_A) | |
2983 | return; | |
2984 | ||
2985 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
2986 | 1)) | |
2987 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
2988 | } | |
2989 | ||
33a34e4e | 2990 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 2991 | void |
33a34e4e | 2992 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 2993 | { |
da63a9f2 | 2994 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 2995 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
2996 | int i; |
2997 | uint8_t voltage; | |
cdb0e95b | 2998 | int voltage_tries, loop_tries; |
ea5b213a | 2999 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3000 | uint8_t link_config[2]; |
a4fc5ed6 | 3001 | |
affa9354 | 3002 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3003 | intel_ddi_prepare_link_retrain(encoder); |
3004 | ||
3cf2efb1 | 3005 | /* Write the link configuration data */ |
6aba5b6c JN |
3006 | link_config[0] = intel_dp->link_bw; |
3007 | link_config[1] = intel_dp->lane_count; | |
3008 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3009 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3010 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
6aba5b6c JN |
3011 | |
3012 | link_config[0] = 0; | |
3013 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3014 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3015 | |
3016 | DP |= DP_PORT_EN; | |
1a2eb460 | 3017 | |
70aff66c JN |
3018 | /* clock recovery */ |
3019 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3020 | DP_TRAINING_PATTERN_1 | | |
3021 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3022 | DRM_ERROR("failed to enable link training\n"); | |
3023 | return; | |
3024 | } | |
3025 | ||
a4fc5ed6 | 3026 | voltage = 0xff; |
cdb0e95b KP |
3027 | voltage_tries = 0; |
3028 | loop_tries = 0; | |
a4fc5ed6 | 3029 | for (;;) { |
70aff66c | 3030 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3031 | |
a7c9655f | 3032 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3033 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3034 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3035 | break; |
93f62dad | 3036 | } |
a4fc5ed6 | 3037 | |
01916270 | 3038 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3039 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3040 | break; |
3041 | } | |
3042 | ||
3043 | /* Check to see if we've tried the max voltage */ | |
3044 | for (i = 0; i < intel_dp->lane_count; i++) | |
3045 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3046 | break; |
3b4f819d | 3047 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3048 | ++loop_tries; |
3049 | if (loop_tries == 5) { | |
3def84b3 | 3050 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3051 | break; |
3052 | } | |
70aff66c JN |
3053 | intel_dp_reset_link_train(intel_dp, &DP, |
3054 | DP_TRAINING_PATTERN_1 | | |
3055 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3056 | voltage_tries = 0; |
3057 | continue; | |
3058 | } | |
a4fc5ed6 | 3059 | |
3cf2efb1 | 3060 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3061 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3062 | ++voltage_tries; |
b06fbda3 | 3063 | if (voltage_tries == 5) { |
3def84b3 | 3064 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3065 | break; |
3066 | } | |
3067 | } else | |
3068 | voltage_tries = 0; | |
3069 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3070 | |
70aff66c JN |
3071 | /* Update training set as requested by target */ |
3072 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3073 | DRM_ERROR("failed to update link training\n"); | |
3074 | break; | |
3075 | } | |
a4fc5ed6 KP |
3076 | } |
3077 | ||
33a34e4e JB |
3078 | intel_dp->DP = DP; |
3079 | } | |
3080 | ||
c19b0669 | 3081 | void |
33a34e4e JB |
3082 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3083 | { | |
33a34e4e | 3084 | bool channel_eq = false; |
37f80975 | 3085 | int tries, cr_tries; |
33a34e4e | 3086 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3087 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3088 | ||
3089 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3090 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3091 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3092 | |
a4fc5ed6 | 3093 | /* channel equalization */ |
70aff66c | 3094 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3095 | training_pattern | |
70aff66c JN |
3096 | DP_LINK_SCRAMBLING_DISABLE)) { |
3097 | DRM_ERROR("failed to start channel equalization\n"); | |
3098 | return; | |
3099 | } | |
3100 | ||
a4fc5ed6 | 3101 | tries = 0; |
37f80975 | 3102 | cr_tries = 0; |
a4fc5ed6 KP |
3103 | channel_eq = false; |
3104 | for (;;) { | |
70aff66c | 3105 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3106 | |
37f80975 JB |
3107 | if (cr_tries > 5) { |
3108 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3109 | break; |
3110 | } | |
3111 | ||
a7c9655f | 3112 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3113 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3114 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3115 | break; |
70aff66c | 3116 | } |
a4fc5ed6 | 3117 | |
37f80975 | 3118 | /* Make sure clock is still ok */ |
01916270 | 3119 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3120 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3121 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3122 | training_pattern | |
70aff66c | 3123 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3124 | cr_tries++; |
3125 | continue; | |
3126 | } | |
3127 | ||
1ffdff13 | 3128 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3129 | channel_eq = true; |
3130 | break; | |
3131 | } | |
a4fc5ed6 | 3132 | |
37f80975 JB |
3133 | /* Try 5 times, then try clock recovery if that fails */ |
3134 | if (tries > 5) { | |
3135 | intel_dp_link_down(intel_dp); | |
3136 | intel_dp_start_link_train(intel_dp); | |
70aff66c | 3137 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3138 | training_pattern | |
70aff66c | 3139 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3140 | tries = 0; |
3141 | cr_tries++; | |
3142 | continue; | |
3143 | } | |
a4fc5ed6 | 3144 | |
70aff66c JN |
3145 | /* Update training set as requested by target */ |
3146 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3147 | DRM_ERROR("failed to update link training\n"); | |
3148 | break; | |
3149 | } | |
3cf2efb1 | 3150 | ++tries; |
869184a6 | 3151 | } |
3cf2efb1 | 3152 | |
3ab9c637 ID |
3153 | intel_dp_set_idle_link_train(intel_dp); |
3154 | ||
3155 | intel_dp->DP = DP; | |
3156 | ||
d6c0d722 | 3157 | if (channel_eq) |
07f42258 | 3158 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3159 | |
3ab9c637 ID |
3160 | } |
3161 | ||
3162 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3163 | { | |
70aff66c | 3164 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3165 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3166 | } |
3167 | ||
3168 | static void | |
ea5b213a | 3169 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3170 | { |
da63a9f2 | 3171 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3172 | enum port port = intel_dig_port->port; |
da63a9f2 | 3173 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3174 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
3175 | struct intel_crtc *intel_crtc = |
3176 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 3177 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3178 | |
bc76e320 | 3179 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3180 | return; |
3181 | ||
0c33d8d7 | 3182 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3183 | return; |
3184 | ||
28c97730 | 3185 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3186 | |
bc7d38a4 | 3187 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3188 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3189 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 ZW |
3190 | } else { |
3191 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3192 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3193 | } |
fe255d00 | 3194 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3195 | |
493a7081 | 3196 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3197 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 3198 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 3199 | |
5bddd17f EA |
3200 | /* Hardware workaround: leaving our transcoder select |
3201 | * set to transcoder B while it's off will prevent the | |
3202 | * corresponding HDMI output on transcoder A. | |
3203 | * | |
3204 | * Combine this with another hardware workaround: | |
3205 | * transcoder select bit can only be cleared while the | |
3206 | * port is enabled. | |
3207 | */ | |
3208 | DP &= ~DP_PIPEB_SELECT; | |
3209 | I915_WRITE(intel_dp->output_reg, DP); | |
3210 | ||
3211 | /* Changes to enable or select take place the vblank | |
3212 | * after being written. | |
3213 | */ | |
ff50afe9 DV |
3214 | if (WARN_ON(crtc == NULL)) { |
3215 | /* We should never try to disable a port without a crtc | |
3216 | * attached. For paranoia keep the code around for a | |
3217 | * bit. */ | |
31acbcc4 CW |
3218 | POSTING_READ(intel_dp->output_reg); |
3219 | msleep(50); | |
3220 | } else | |
ab527efc | 3221 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
3222 | } |
3223 | ||
832afda6 | 3224 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3225 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3226 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3227 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3228 | } |
3229 | ||
26d61aad KP |
3230 | static bool |
3231 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3232 | { |
a031d709 RV |
3233 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3234 | struct drm_device *dev = dig_port->base.base.dev; | |
3235 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3236 | ||
577c7a50 DL |
3237 | char dpcd_hex_dump[sizeof(intel_dp->dpcd) * 3]; |
3238 | ||
9d1a1031 JN |
3239 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3240 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3241 | return false; /* aux transfer failed */ |
92fd8fd1 | 3242 | |
577c7a50 DL |
3243 | hex_dump_to_buffer(intel_dp->dpcd, sizeof(intel_dp->dpcd), |
3244 | 32, 1, dpcd_hex_dump, sizeof(dpcd_hex_dump), false); | |
3245 | DRM_DEBUG_KMS("DPCD: %s\n", dpcd_hex_dump); | |
3246 | ||
edb39244 AJ |
3247 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3248 | return false; /* DPCD not present */ | |
3249 | ||
2293bb5c SK |
3250 | /* Check if the panel supports PSR */ |
3251 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3252 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3253 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3254 | intel_dp->psr_dpcd, | |
3255 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3256 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3257 | dev_priv->psr.sink_support = true; | |
50003939 | 3258 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3259 | } |
50003939 JN |
3260 | } |
3261 | ||
06ea66b6 TP |
3262 | /* Training Pattern 3 support */ |
3263 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && | |
3264 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED) { | |
3265 | intel_dp->use_tps3 = true; | |
3266 | DRM_DEBUG_KMS("Displayport TPS3 supported"); | |
3267 | } else | |
3268 | intel_dp->use_tps3 = false; | |
3269 | ||
edb39244 AJ |
3270 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3271 | DP_DWN_STRM_PORT_PRESENT)) | |
3272 | return true; /* native DP sink */ | |
3273 | ||
3274 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3275 | return true; /* no per-port downstream info */ | |
3276 | ||
9d1a1031 JN |
3277 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3278 | intel_dp->downstream_ports, | |
3279 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3280 | return false; /* downstream port status fetch failed */ |
3281 | ||
3282 | return true; | |
92fd8fd1 KP |
3283 | } |
3284 | ||
0d198328 AJ |
3285 | static void |
3286 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3287 | { | |
3288 | u8 buf[3]; | |
3289 | ||
3290 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3291 | return; | |
3292 | ||
24f3e092 | 3293 | intel_edp_panel_vdd_on(intel_dp); |
351cfc34 | 3294 | |
9d1a1031 | 3295 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3296 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3297 | buf[0], buf[1], buf[2]); | |
3298 | ||
9d1a1031 | 3299 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3300 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3301 | buf[0], buf[1], buf[2]); | |
351cfc34 | 3302 | |
4be73780 | 3303 | edp_panel_vdd_off(intel_dp, false); |
0d198328 AJ |
3304 | } |
3305 | ||
d2e216d0 RV |
3306 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3307 | { | |
3308 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3309 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3310 | struct intel_crtc *intel_crtc = | |
3311 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
3312 | u8 buf[1]; | |
3313 | ||
9d1a1031 | 3314 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0) |
d2e216d0 RV |
3315 | return -EAGAIN; |
3316 | ||
3317 | if (!(buf[0] & DP_TEST_CRC_SUPPORTED)) | |
3318 | return -ENOTTY; | |
3319 | ||
9d1a1031 JN |
3320 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
3321 | DP_TEST_SINK_START) < 0) | |
d2e216d0 RV |
3322 | return -EAGAIN; |
3323 | ||
3324 | /* Wait 2 vblanks to be sure we will have the correct CRC value */ | |
3325 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3326 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3327 | ||
9d1a1031 | 3328 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
d2e216d0 RV |
3329 | return -EAGAIN; |
3330 | ||
9d1a1031 | 3331 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0); |
d2e216d0 RV |
3332 | return 0; |
3333 | } | |
3334 | ||
a60f0e38 JB |
3335 | static bool |
3336 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3337 | { | |
9d1a1031 JN |
3338 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3339 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3340 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3341 | } |
3342 | ||
3343 | static void | |
3344 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3345 | { | |
3346 | /* NAK by default */ | |
9d1a1031 | 3347 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3348 | } |
3349 | ||
a4fc5ed6 KP |
3350 | /* |
3351 | * According to DP spec | |
3352 | * 5.1.2: | |
3353 | * 1. Read DPCD | |
3354 | * 2. Configure link according to Receiver Capabilities | |
3355 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3356 | * 4. Check link status on receipt of hot-plug interrupt | |
3357 | */ | |
3358 | ||
00c09d70 | 3359 | void |
ea5b213a | 3360 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3361 | { |
da63a9f2 | 3362 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3363 | u8 sink_irq_vector; |
93f62dad | 3364 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3365 | |
6e9f798d | 3366 | /* FIXME: This access isn't protected by any locks. */ |
da63a9f2 | 3367 | if (!intel_encoder->connectors_active) |
d2b996ac | 3368 | return; |
59cd09e1 | 3369 | |
da63a9f2 | 3370 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3371 | return; |
3372 | ||
92fd8fd1 | 3373 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3374 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3375 | return; |
3376 | } | |
3377 | ||
92fd8fd1 | 3378 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3379 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3380 | return; |
3381 | } | |
3382 | ||
a60f0e38 JB |
3383 | /* Try to read the source of the interrupt */ |
3384 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
3385 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
3386 | /* Clear interrupt source */ | |
9d1a1031 JN |
3387 | drm_dp_dpcd_writeb(&intel_dp->aux, |
3388 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3389 | sink_irq_vector); | |
a60f0e38 JB |
3390 | |
3391 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
3392 | intel_dp_handle_test_request(intel_dp); | |
3393 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
3394 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
3395 | } | |
3396 | ||
1ffdff13 | 3397 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 3398 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 3399 | intel_encoder->base.name); |
33a34e4e JB |
3400 | intel_dp_start_link_train(intel_dp); |
3401 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 3402 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 3403 | } |
a4fc5ed6 | 3404 | } |
a4fc5ed6 | 3405 | |
caf9ab24 | 3406 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 3407 | static enum drm_connector_status |
26d61aad | 3408 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 3409 | { |
caf9ab24 | 3410 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
3411 | uint8_t type; |
3412 | ||
3413 | if (!intel_dp_get_dpcd(intel_dp)) | |
3414 | return connector_status_disconnected; | |
3415 | ||
3416 | /* if there's no downstream port, we're done */ | |
3417 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 3418 | return connector_status_connected; |
caf9ab24 AJ |
3419 | |
3420 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
3421 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
3422 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 3423 | uint8_t reg; |
9d1a1031 JN |
3424 | |
3425 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
3426 | ®, 1) < 0) | |
caf9ab24 | 3427 | return connector_status_unknown; |
9d1a1031 | 3428 | |
23235177 AJ |
3429 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
3430 | : connector_status_disconnected; | |
caf9ab24 AJ |
3431 | } |
3432 | ||
3433 | /* If no HPD, poke DDC gently */ | |
0b99836f | 3434 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 3435 | return connector_status_connected; |
caf9ab24 AJ |
3436 | |
3437 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
3438 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
3439 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
3440 | if (type == DP_DS_PORT_TYPE_VGA || | |
3441 | type == DP_DS_PORT_TYPE_NON_EDID) | |
3442 | return connector_status_unknown; | |
3443 | } else { | |
3444 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
3445 | DP_DWN_STRM_PORT_TYPE_MASK; | |
3446 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
3447 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
3448 | return connector_status_unknown; | |
3449 | } | |
caf9ab24 AJ |
3450 | |
3451 | /* Anything else is out of spec, warn and ignore */ | |
3452 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 3453 | return connector_status_disconnected; |
71ba9000 AJ |
3454 | } |
3455 | ||
5eb08b69 | 3456 | static enum drm_connector_status |
a9756bb5 | 3457 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 3458 | { |
30add22d | 3459 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
3460 | struct drm_i915_private *dev_priv = dev->dev_private; |
3461 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5eb08b69 ZW |
3462 | enum drm_connector_status status; |
3463 | ||
fe16d949 CW |
3464 | /* Can't disconnect eDP, but you can close the lid... */ |
3465 | if (is_edp(intel_dp)) { | |
30add22d | 3466 | status = intel_panel_detect(dev); |
fe16d949 CW |
3467 | if (status == connector_status_unknown) |
3468 | status = connector_status_connected; | |
3469 | return status; | |
3470 | } | |
01cb9ea6 | 3471 | |
1b469639 DL |
3472 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
3473 | return connector_status_disconnected; | |
3474 | ||
26d61aad | 3475 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
3476 | } |
3477 | ||
a4fc5ed6 | 3478 | static enum drm_connector_status |
a9756bb5 | 3479 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 3480 | { |
30add22d | 3481 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
a4fc5ed6 | 3482 | struct drm_i915_private *dev_priv = dev->dev_private; |
34f2be46 | 3483 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
10f76a38 | 3484 | uint32_t bit; |
5eb08b69 | 3485 | |
35aad75f JB |
3486 | /* Can't disconnect eDP, but you can close the lid... */ |
3487 | if (is_edp(intel_dp)) { | |
3488 | enum drm_connector_status status; | |
3489 | ||
3490 | status = intel_panel_detect(dev); | |
3491 | if (status == connector_status_unknown) | |
3492 | status = connector_status_connected; | |
3493 | return status; | |
3494 | } | |
3495 | ||
232a6ee9 TP |
3496 | if (IS_VALLEYVIEW(dev)) { |
3497 | switch (intel_dig_port->port) { | |
3498 | case PORT_B: | |
3499 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
3500 | break; | |
3501 | case PORT_C: | |
3502 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
3503 | break; | |
3504 | case PORT_D: | |
3505 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
3506 | break; | |
3507 | default: | |
3508 | return connector_status_unknown; | |
3509 | } | |
3510 | } else { | |
3511 | switch (intel_dig_port->port) { | |
3512 | case PORT_B: | |
3513 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
3514 | break; | |
3515 | case PORT_C: | |
3516 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
3517 | break; | |
3518 | case PORT_D: | |
3519 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
3520 | break; | |
3521 | default: | |
3522 | return connector_status_unknown; | |
3523 | } | |
a4fc5ed6 KP |
3524 | } |
3525 | ||
10f76a38 | 3526 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
3527 | return connector_status_disconnected; |
3528 | ||
26d61aad | 3529 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
3530 | } |
3531 | ||
8c241fef KP |
3532 | static struct edid * |
3533 | intel_dp_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) | |
3534 | { | |
9cd300e0 | 3535 | struct intel_connector *intel_connector = to_intel_connector(connector); |
d6f24d0f | 3536 | |
9cd300e0 JN |
3537 | /* use cached edid if we have one */ |
3538 | if (intel_connector->edid) { | |
9cd300e0 JN |
3539 | /* invalid edid */ |
3540 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
3541 | return NULL; |
3542 | ||
55e9edeb | 3543 | return drm_edid_duplicate(intel_connector->edid); |
d6f24d0f | 3544 | } |
8c241fef | 3545 | |
9cd300e0 | 3546 | return drm_get_edid(connector, adapter); |
8c241fef KP |
3547 | } |
3548 | ||
3549 | static int | |
3550 | intel_dp_get_edid_modes(struct drm_connector *connector, struct i2c_adapter *adapter) | |
3551 | { | |
9cd300e0 | 3552 | struct intel_connector *intel_connector = to_intel_connector(connector); |
8c241fef | 3553 | |
9cd300e0 JN |
3554 | /* use cached edid if we have one */ |
3555 | if (intel_connector->edid) { | |
3556 | /* invalid edid */ | |
3557 | if (IS_ERR(intel_connector->edid)) | |
3558 | return 0; | |
3559 | ||
3560 | return intel_connector_update_modes(connector, | |
3561 | intel_connector->edid); | |
d6f24d0f JB |
3562 | } |
3563 | ||
9cd300e0 | 3564 | return intel_ddc_get_modes(connector, adapter); |
8c241fef KP |
3565 | } |
3566 | ||
a9756bb5 ZW |
3567 | static enum drm_connector_status |
3568 | intel_dp_detect(struct drm_connector *connector, bool force) | |
3569 | { | |
3570 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
3571 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3572 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 3573 | struct drm_device *dev = connector->dev; |
c8c8fb33 | 3574 | struct drm_i915_private *dev_priv = dev->dev_private; |
a9756bb5 | 3575 | enum drm_connector_status status; |
671dedd2 | 3576 | enum intel_display_power_domain power_domain; |
a9756bb5 ZW |
3577 | struct edid *edid = NULL; |
3578 | ||
c8c8fb33 PZ |
3579 | intel_runtime_pm_get(dev_priv); |
3580 | ||
671dedd2 ID |
3581 | power_domain = intel_display_port_power_domain(intel_encoder); |
3582 | intel_display_power_get(dev_priv, power_domain); | |
3583 | ||
164c8598 | 3584 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 3585 | connector->base.id, connector->name); |
164c8598 | 3586 | |
a9756bb5 ZW |
3587 | intel_dp->has_audio = false; |
3588 | ||
3589 | if (HAS_PCH_SPLIT(dev)) | |
3590 | status = ironlake_dp_detect(intel_dp); | |
3591 | else | |
3592 | status = g4x_dp_detect(intel_dp); | |
1b9be9d0 | 3593 | |
a9756bb5 | 3594 | if (status != connector_status_connected) |
c8c8fb33 | 3595 | goto out; |
a9756bb5 | 3596 | |
0d198328 AJ |
3597 | intel_dp_probe_oui(intel_dp); |
3598 | ||
c3e5f67b DV |
3599 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) { |
3600 | intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON); | |
f684960e | 3601 | } else { |
0b99836f | 3602 | edid = intel_dp_get_edid(connector, &intel_dp->aux.ddc); |
f684960e CW |
3603 | if (edid) { |
3604 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
f684960e CW |
3605 | kfree(edid); |
3606 | } | |
a9756bb5 ZW |
3607 | } |
3608 | ||
d63885da PZ |
3609 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
3610 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
3611 | status = connector_status_connected; |
3612 | ||
3613 | out: | |
671dedd2 ID |
3614 | intel_display_power_put(dev_priv, power_domain); |
3615 | ||
c8c8fb33 | 3616 | intel_runtime_pm_put(dev_priv); |
671dedd2 | 3617 | |
c8c8fb33 | 3618 | return status; |
a4fc5ed6 KP |
3619 | } |
3620 | ||
3621 | static int intel_dp_get_modes(struct drm_connector *connector) | |
3622 | { | |
df0e9248 | 3623 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
671dedd2 ID |
3624 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3625 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
dd06f90e | 3626 | struct intel_connector *intel_connector = to_intel_connector(connector); |
fa90ecef | 3627 | struct drm_device *dev = connector->dev; |
671dedd2 ID |
3628 | struct drm_i915_private *dev_priv = dev->dev_private; |
3629 | enum intel_display_power_domain power_domain; | |
32f9d658 | 3630 | int ret; |
a4fc5ed6 KP |
3631 | |
3632 | /* We should parse the EDID data and find out if it has an audio sink | |
3633 | */ | |
3634 | ||
671dedd2 ID |
3635 | power_domain = intel_display_port_power_domain(intel_encoder); |
3636 | intel_display_power_get(dev_priv, power_domain); | |
3637 | ||
0b99836f | 3638 | ret = intel_dp_get_edid_modes(connector, &intel_dp->aux.ddc); |
671dedd2 | 3639 | intel_display_power_put(dev_priv, power_domain); |
f8779fda | 3640 | if (ret) |
32f9d658 ZW |
3641 | return ret; |
3642 | ||
f8779fda | 3643 | /* if eDP has no EDID, fall back to fixed mode */ |
dd06f90e | 3644 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
f8779fda | 3645 | struct drm_display_mode *mode; |
dd06f90e JN |
3646 | mode = drm_mode_duplicate(dev, |
3647 | intel_connector->panel.fixed_mode); | |
f8779fda | 3648 | if (mode) { |
32f9d658 ZW |
3649 | drm_mode_probed_add(connector, mode); |
3650 | return 1; | |
3651 | } | |
3652 | } | |
3653 | return 0; | |
a4fc5ed6 KP |
3654 | } |
3655 | ||
1aad7ac0 CW |
3656 | static bool |
3657 | intel_dp_detect_audio(struct drm_connector *connector) | |
3658 | { | |
3659 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
671dedd2 ID |
3660 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3661 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
3662 | struct drm_device *dev = connector->dev; | |
3663 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3664 | enum intel_display_power_domain power_domain; | |
1aad7ac0 CW |
3665 | struct edid *edid; |
3666 | bool has_audio = false; | |
3667 | ||
671dedd2 ID |
3668 | power_domain = intel_display_port_power_domain(intel_encoder); |
3669 | intel_display_power_get(dev_priv, power_domain); | |
3670 | ||
0b99836f | 3671 | edid = intel_dp_get_edid(connector, &intel_dp->aux.ddc); |
1aad7ac0 CW |
3672 | if (edid) { |
3673 | has_audio = drm_detect_monitor_audio(edid); | |
1aad7ac0 CW |
3674 | kfree(edid); |
3675 | } | |
3676 | ||
671dedd2 ID |
3677 | intel_display_power_put(dev_priv, power_domain); |
3678 | ||
1aad7ac0 CW |
3679 | return has_audio; |
3680 | } | |
3681 | ||
f684960e CW |
3682 | static int |
3683 | intel_dp_set_property(struct drm_connector *connector, | |
3684 | struct drm_property *property, | |
3685 | uint64_t val) | |
3686 | { | |
e953fd7b | 3687 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 3688 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
3689 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
3690 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
3691 | int ret; |
3692 | ||
662595df | 3693 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
3694 | if (ret) |
3695 | return ret; | |
3696 | ||
3f43c48d | 3697 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
3698 | int i = val; |
3699 | bool has_audio; | |
3700 | ||
3701 | if (i == intel_dp->force_audio) | |
f684960e CW |
3702 | return 0; |
3703 | ||
1aad7ac0 | 3704 | intel_dp->force_audio = i; |
f684960e | 3705 | |
c3e5f67b | 3706 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
3707 | has_audio = intel_dp_detect_audio(connector); |
3708 | else | |
c3e5f67b | 3709 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
3710 | |
3711 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
3712 | return 0; |
3713 | ||
1aad7ac0 | 3714 | intel_dp->has_audio = has_audio; |
f684960e CW |
3715 | goto done; |
3716 | } | |
3717 | ||
e953fd7b | 3718 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
3719 | bool old_auto = intel_dp->color_range_auto; |
3720 | uint32_t old_range = intel_dp->color_range; | |
3721 | ||
55bc60db VS |
3722 | switch (val) { |
3723 | case INTEL_BROADCAST_RGB_AUTO: | |
3724 | intel_dp->color_range_auto = true; | |
3725 | break; | |
3726 | case INTEL_BROADCAST_RGB_FULL: | |
3727 | intel_dp->color_range_auto = false; | |
3728 | intel_dp->color_range = 0; | |
3729 | break; | |
3730 | case INTEL_BROADCAST_RGB_LIMITED: | |
3731 | intel_dp->color_range_auto = false; | |
3732 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
3733 | break; | |
3734 | default: | |
3735 | return -EINVAL; | |
3736 | } | |
ae4edb80 DV |
3737 | |
3738 | if (old_auto == intel_dp->color_range_auto && | |
3739 | old_range == intel_dp->color_range) | |
3740 | return 0; | |
3741 | ||
e953fd7b CW |
3742 | goto done; |
3743 | } | |
3744 | ||
53b41837 YN |
3745 | if (is_edp(intel_dp) && |
3746 | property == connector->dev->mode_config.scaling_mode_property) { | |
3747 | if (val == DRM_MODE_SCALE_NONE) { | |
3748 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
3749 | return -EINVAL; | |
3750 | } | |
3751 | ||
3752 | if (intel_connector->panel.fitting_mode == val) { | |
3753 | /* the eDP scaling property is not changed */ | |
3754 | return 0; | |
3755 | } | |
3756 | intel_connector->panel.fitting_mode = val; | |
3757 | ||
3758 | goto done; | |
3759 | } | |
3760 | ||
f684960e CW |
3761 | return -EINVAL; |
3762 | ||
3763 | done: | |
c0c36b94 CW |
3764 | if (intel_encoder->base.crtc) |
3765 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
3766 | |
3767 | return 0; | |
3768 | } | |
3769 | ||
a4fc5ed6 | 3770 | static void |
73845adf | 3771 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 3772 | { |
1d508706 | 3773 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 3774 | |
9cd300e0 JN |
3775 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
3776 | kfree(intel_connector->edid); | |
3777 | ||
acd8db10 PZ |
3778 | /* Can't call is_edp() since the encoder may have been destroyed |
3779 | * already. */ | |
3780 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 3781 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 3782 | |
a4fc5ed6 | 3783 | drm_connector_cleanup(connector); |
55f78c43 | 3784 | kfree(connector); |
a4fc5ed6 KP |
3785 | } |
3786 | ||
00c09d70 | 3787 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 3788 | { |
da63a9f2 PZ |
3789 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
3790 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
bd173813 | 3791 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
24d05927 | 3792 | |
4f71d0cb | 3793 | drm_dp_aux_unregister(&intel_dp->aux); |
24d05927 | 3794 | drm_encoder_cleanup(encoder); |
bd943159 KP |
3795 | if (is_edp(intel_dp)) { |
3796 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
51fd371b | 3797 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4be73780 | 3798 | edp_panel_vdd_off_sync(intel_dp); |
51fd371b | 3799 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
bd943159 | 3800 | } |
da63a9f2 | 3801 | kfree(intel_dig_port); |
24d05927 DV |
3802 | } |
3803 | ||
a4fc5ed6 | 3804 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 3805 | .dpms = intel_connector_dpms, |
a4fc5ed6 KP |
3806 | .detect = intel_dp_detect, |
3807 | .fill_modes = drm_helper_probe_single_connector_modes, | |
f684960e | 3808 | .set_property = intel_dp_set_property, |
73845adf | 3809 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
3810 | }; |
3811 | ||
3812 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
3813 | .get_modes = intel_dp_get_modes, | |
3814 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 3815 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
3816 | }; |
3817 | ||
a4fc5ed6 | 3818 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
24d05927 | 3819 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
3820 | }; |
3821 | ||
995b6762 | 3822 | static void |
21d40d37 | 3823 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 3824 | { |
fa90ecef | 3825 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
c8110e52 | 3826 | |
885a5014 | 3827 | intel_dp_check_link_status(intel_dp); |
c8110e52 | 3828 | } |
6207937d | 3829 | |
13cf5504 DA |
3830 | bool |
3831 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) | |
3832 | { | |
3833 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
3834 | ||
3835 | if (long_hpd) | |
3836 | return true; | |
3837 | ||
3838 | /* | |
3839 | * we'll check the link status via the normal hot plug path later - | |
3840 | * but for short hpds we should check it now | |
3841 | */ | |
3842 | intel_dp_check_link_status(intel_dp); | |
3843 | return false; | |
3844 | } | |
3845 | ||
e3421a18 ZW |
3846 | /* Return which DP Port should be selected for Transcoder DP control */ |
3847 | int | |
0206e353 | 3848 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
3849 | { |
3850 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
3851 | struct intel_encoder *intel_encoder; |
3852 | struct intel_dp *intel_dp; | |
e3421a18 | 3853 | |
fa90ecef PZ |
3854 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
3855 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 3856 | |
fa90ecef PZ |
3857 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
3858 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 3859 | return intel_dp->output_reg; |
e3421a18 | 3860 | } |
ea5b213a | 3861 | |
e3421a18 ZW |
3862 | return -1; |
3863 | } | |
3864 | ||
36e83a18 | 3865 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 3866 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
3867 | { |
3868 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 3869 | union child_device_config *p_child; |
36e83a18 | 3870 | int i; |
5d8a7752 VS |
3871 | static const short port_mapping[] = { |
3872 | [PORT_B] = PORT_IDPB, | |
3873 | [PORT_C] = PORT_IDPC, | |
3874 | [PORT_D] = PORT_IDPD, | |
3875 | }; | |
36e83a18 | 3876 | |
3b32a35b VS |
3877 | if (port == PORT_A) |
3878 | return true; | |
3879 | ||
41aa3448 | 3880 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
3881 | return false; |
3882 | ||
41aa3448 RV |
3883 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
3884 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 3885 | |
5d8a7752 | 3886 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
3887 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
3888 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
3889 | return true; |
3890 | } | |
3891 | return false; | |
3892 | } | |
3893 | ||
f684960e CW |
3894 | static void |
3895 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) | |
3896 | { | |
53b41837 YN |
3897 | struct intel_connector *intel_connector = to_intel_connector(connector); |
3898 | ||
3f43c48d | 3899 | intel_attach_force_audio_property(connector); |
e953fd7b | 3900 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 3901 | intel_dp->color_range_auto = true; |
53b41837 YN |
3902 | |
3903 | if (is_edp(intel_dp)) { | |
3904 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
3905 | drm_object_attach_property( |
3906 | &connector->base, | |
53b41837 | 3907 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
3908 | DRM_MODE_SCALE_ASPECT); |
3909 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 3910 | } |
f684960e CW |
3911 | } |
3912 | ||
dada1a9f ID |
3913 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
3914 | { | |
3915 | intel_dp->last_power_cycle = jiffies; | |
3916 | intel_dp->last_power_on = jiffies; | |
3917 | intel_dp->last_backlight_off = jiffies; | |
3918 | } | |
3919 | ||
67a54566 DV |
3920 | static void |
3921 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
3922 | struct intel_dp *intel_dp, |
3923 | struct edp_power_seq *out) | |
67a54566 DV |
3924 | { |
3925 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3926 | struct edp_power_seq cur, vbt, spec, final; | |
3927 | u32 pp_on, pp_off, pp_div, pp; | |
bf13e81b | 3928 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 JB |
3929 | |
3930 | if (HAS_PCH_SPLIT(dev)) { | |
bf13e81b | 3931 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
3932 | pp_on_reg = PCH_PP_ON_DELAYS; |
3933 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
3934 | pp_div_reg = PCH_PP_DIVISOR; | |
3935 | } else { | |
bf13e81b JN |
3936 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
3937 | ||
3938 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
3939 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
3940 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
3941 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 3942 | } |
67a54566 DV |
3943 | |
3944 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
3945 | * the very first thing. */ | |
453c5420 | 3946 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 3947 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 3948 | |
453c5420 JB |
3949 | pp_on = I915_READ(pp_on_reg); |
3950 | pp_off = I915_READ(pp_off_reg); | |
3951 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
3952 | |
3953 | /* Pull timing values out of registers */ | |
3954 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
3955 | PANEL_POWER_UP_DELAY_SHIFT; | |
3956 | ||
3957 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
3958 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
3959 | ||
3960 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
3961 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
3962 | ||
3963 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
3964 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
3965 | ||
3966 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
3967 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
3968 | ||
3969 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
3970 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
3971 | ||
41aa3448 | 3972 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
3973 | |
3974 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
3975 | * our hw here, which are all in 100usec. */ | |
3976 | spec.t1_t3 = 210 * 10; | |
3977 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
3978 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
3979 | spec.t10 = 500 * 10; | |
3980 | /* This one is special and actually in units of 100ms, but zero | |
3981 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
3982 | * table multiplies it with 1000 to make it in units of 100usec, | |
3983 | * too. */ | |
3984 | spec.t11_t12 = (510 + 100) * 10; | |
3985 | ||
3986 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
3987 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
3988 | ||
3989 | /* Use the max of the register settings and vbt. If both are | |
3990 | * unset, fall back to the spec limits. */ | |
3991 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
3992 | spec.field : \ | |
3993 | max(cur.field, vbt.field)) | |
3994 | assign_final(t1_t3); | |
3995 | assign_final(t8); | |
3996 | assign_final(t9); | |
3997 | assign_final(t10); | |
3998 | assign_final(t11_t12); | |
3999 | #undef assign_final | |
4000 | ||
4001 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
4002 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
4003 | intel_dp->backlight_on_delay = get_delay(t8); | |
4004 | intel_dp->backlight_off_delay = get_delay(t9); | |
4005 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4006 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4007 | #undef get_delay | |
4008 | ||
f30d26e4 JN |
4009 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4010 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4011 | intel_dp->panel_power_cycle_delay); | |
4012 | ||
4013 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4014 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
4015 | ||
4016 | if (out) | |
4017 | *out = final; | |
4018 | } | |
4019 | ||
4020 | static void | |
4021 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
4022 | struct intel_dp *intel_dp, | |
4023 | struct edp_power_seq *seq) | |
4024 | { | |
4025 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4026 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4027 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4028 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
4029 | ||
4030 | if (HAS_PCH_SPLIT(dev)) { | |
4031 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4032 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4033 | pp_div_reg = PCH_PP_DIVISOR; | |
4034 | } else { | |
bf13e81b JN |
4035 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4036 | ||
4037 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4038 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4039 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4040 | } |
4041 | ||
b2f19d1a PZ |
4042 | /* |
4043 | * And finally store the new values in the power sequencer. The | |
4044 | * backlight delays are set to 1 because we do manual waits on them. For | |
4045 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4046 | * we'll end up waiting for the backlight off delay twice: once when we | |
4047 | * do the manual sleep, and once when we disable the panel and wait for | |
4048 | * the PP_STATUS bit to become zero. | |
4049 | */ | |
f30d26e4 | 4050 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4051 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4052 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4053 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4054 | /* Compute the divisor for the pp clock, simply match the Bspec |
4055 | * formula. */ | |
453c5420 | 4056 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4057 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4058 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4059 | ||
4060 | /* Haswell doesn't have any port selection bits for the panel | |
4061 | * power sequencer any more. */ | |
bc7d38a4 | 4062 | if (IS_VALLEYVIEW(dev)) { |
bf13e81b JN |
4063 | if (dp_to_dig_port(intel_dp)->port == PORT_B) |
4064 | port_sel = PANEL_PORT_SELECT_DPB_VLV; | |
4065 | else | |
4066 | port_sel = PANEL_PORT_SELECT_DPC_VLV; | |
bc7d38a4 ID |
4067 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
4068 | if (dp_to_dig_port(intel_dp)->port == PORT_A) | |
a24c144c | 4069 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4070 | else |
a24c144c | 4071 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4072 | } |
4073 | ||
453c5420 JB |
4074 | pp_on |= port_sel; |
4075 | ||
4076 | I915_WRITE(pp_on_reg, pp_on); | |
4077 | I915_WRITE(pp_off_reg, pp_off); | |
4078 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4079 | |
67a54566 | 4080 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4081 | I915_READ(pp_on_reg), |
4082 | I915_READ(pp_off_reg), | |
4083 | I915_READ(pp_div_reg)); | |
f684960e CW |
4084 | } |
4085 | ||
439d7ac0 PB |
4086 | void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
4087 | { | |
4088 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4089 | struct intel_encoder *encoder; | |
4090 | struct intel_dp *intel_dp = NULL; | |
4091 | struct intel_crtc_config *config = NULL; | |
4092 | struct intel_crtc *intel_crtc = NULL; | |
4093 | struct intel_connector *intel_connector = dev_priv->drrs.connector; | |
4094 | u32 reg, val; | |
4095 | enum edp_drrs_refresh_rate_type index = DRRS_HIGH_RR; | |
4096 | ||
4097 | if (refresh_rate <= 0) { | |
4098 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4099 | return; | |
4100 | } | |
4101 | ||
4102 | if (intel_connector == NULL) { | |
4103 | DRM_DEBUG_KMS("DRRS supported for eDP only.\n"); | |
4104 | return; | |
4105 | } | |
4106 | ||
1fcc9d1c DV |
4107 | /* |
4108 | * FIXME: This needs proper synchronization with psr state. But really | |
4109 | * hard to tell without seeing the user of this function of this code. | |
4110 | * Check locking and ordering once that lands. | |
4111 | */ | |
439d7ac0 PB |
4112 | if (INTEL_INFO(dev)->gen < 8 && intel_edp_is_psr_enabled(dev)) { |
4113 | DRM_DEBUG_KMS("DRRS is disabled as PSR is enabled\n"); | |
4114 | return; | |
4115 | } | |
4116 | ||
4117 | encoder = intel_attached_encoder(&intel_connector->base); | |
4118 | intel_dp = enc_to_intel_dp(&encoder->base); | |
4119 | intel_crtc = encoder->new_crtc; | |
4120 | ||
4121 | if (!intel_crtc) { | |
4122 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4123 | return; | |
4124 | } | |
4125 | ||
4126 | config = &intel_crtc->config; | |
4127 | ||
4128 | if (intel_dp->drrs_state.type < SEAMLESS_DRRS_SUPPORT) { | |
4129 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); | |
4130 | return; | |
4131 | } | |
4132 | ||
4133 | if (intel_connector->panel.downclock_mode->vrefresh == refresh_rate) | |
4134 | index = DRRS_LOW_RR; | |
4135 | ||
4136 | if (index == intel_dp->drrs_state.refresh_rate_type) { | |
4137 | DRM_DEBUG_KMS( | |
4138 | "DRRS requested for previously set RR...ignoring\n"); | |
4139 | return; | |
4140 | } | |
4141 | ||
4142 | if (!intel_crtc->active) { | |
4143 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4144 | return; | |
4145 | } | |
4146 | ||
4147 | if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) { | |
4148 | reg = PIPECONF(intel_crtc->config.cpu_transcoder); | |
4149 | val = I915_READ(reg); | |
4150 | if (index > DRRS_HIGH_RR) { | |
4151 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
4152 | intel_dp_set_m2_n2(intel_crtc, &config->dp_m2_n2); | |
4153 | } else { | |
4154 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
4155 | } | |
4156 | I915_WRITE(reg, val); | |
4157 | } | |
4158 | ||
4159 | /* | |
4160 | * mutex taken to ensure that there is no race between differnt | |
4161 | * drrs calls trying to update refresh rate. This scenario may occur | |
4162 | * in future when idleness detection based DRRS in kernel and | |
4163 | * possible calls from user space to set differnt RR are made. | |
4164 | */ | |
4165 | ||
4166 | mutex_lock(&intel_dp->drrs_state.mutex); | |
4167 | ||
4168 | intel_dp->drrs_state.refresh_rate_type = index; | |
4169 | ||
4170 | mutex_unlock(&intel_dp->drrs_state.mutex); | |
4171 | ||
4172 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
4173 | } | |
4174 | ||
4f9db5b5 PB |
4175 | static struct drm_display_mode * |
4176 | intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, | |
4177 | struct intel_connector *intel_connector, | |
4178 | struct drm_display_mode *fixed_mode) | |
4179 | { | |
4180 | struct drm_connector *connector = &intel_connector->base; | |
4181 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4182 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4183 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4184 | struct drm_display_mode *downclock_mode = NULL; | |
4185 | ||
4186 | if (INTEL_INFO(dev)->gen <= 6) { | |
4187 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
4188 | return NULL; | |
4189 | } | |
4190 | ||
4191 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4192 | DRM_INFO("VBT doesn't support DRRS\n"); | |
4193 | return NULL; | |
4194 | } | |
4195 | ||
4196 | downclock_mode = intel_find_panel_downclock | |
4197 | (dev, fixed_mode, connector); | |
4198 | ||
4199 | if (!downclock_mode) { | |
4200 | DRM_INFO("DRRS not supported\n"); | |
4201 | return NULL; | |
4202 | } | |
4203 | ||
439d7ac0 PB |
4204 | dev_priv->drrs.connector = intel_connector; |
4205 | ||
4206 | mutex_init(&intel_dp->drrs_state.mutex); | |
4207 | ||
4f9db5b5 PB |
4208 | intel_dp->drrs_state.type = dev_priv->vbt.drrs_type; |
4209 | ||
4210 | intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; | |
4211 | DRM_INFO("seamless DRRS supported for eDP panel.\n"); | |
4212 | return downclock_mode; | |
4213 | } | |
4214 | ||
ed92f0b2 | 4215 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
0095e6dc PZ |
4216 | struct intel_connector *intel_connector, |
4217 | struct edp_power_seq *power_seq) | |
ed92f0b2 PZ |
4218 | { |
4219 | struct drm_connector *connector = &intel_connector->base; | |
4220 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
4221 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4222 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
4223 | struct drm_i915_private *dev_priv = dev->dev_private; |
4224 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 4225 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
4226 | bool has_dpcd; |
4227 | struct drm_display_mode *scan; | |
4228 | struct edid *edid; | |
4229 | ||
4f9db5b5 PB |
4230 | intel_dp->drrs_state.type = DRRS_NOT_SUPPORTED; |
4231 | ||
ed92f0b2 PZ |
4232 | if (!is_edp(intel_dp)) |
4233 | return true; | |
4234 | ||
63635217 PZ |
4235 | /* The VDD bit needs a power domain reference, so if the bit is already |
4236 | * enabled when we boot, grab this reference. */ | |
4237 | if (edp_have_panel_vdd(intel_dp)) { | |
4238 | enum intel_display_power_domain power_domain; | |
4239 | power_domain = intel_display_port_power_domain(intel_encoder); | |
4240 | intel_display_power_get(dev_priv, power_domain); | |
4241 | } | |
4242 | ||
ed92f0b2 | 4243 | /* Cache DPCD and EDID for edp. */ |
24f3e092 | 4244 | intel_edp_panel_vdd_on(intel_dp); |
ed92f0b2 | 4245 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
4be73780 | 4246 | edp_panel_vdd_off(intel_dp, false); |
ed92f0b2 PZ |
4247 | |
4248 | if (has_dpcd) { | |
4249 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
4250 | dev_priv->no_aux_handshake = | |
4251 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
4252 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
4253 | } else { | |
4254 | /* if this fails, presume the device is a ghost */ | |
4255 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
4256 | return false; |
4257 | } | |
4258 | ||
4259 | /* We now know it's not a ghost, init power sequence regs. */ | |
0095e6dc | 4260 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, power_seq); |
ed92f0b2 | 4261 | |
060c8778 | 4262 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 4263 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
4264 | if (edid) { |
4265 | if (drm_add_edid_modes(connector, edid)) { | |
4266 | drm_mode_connector_update_edid_property(connector, | |
4267 | edid); | |
4268 | drm_edid_to_eld(connector, edid); | |
4269 | } else { | |
4270 | kfree(edid); | |
4271 | edid = ERR_PTR(-EINVAL); | |
4272 | } | |
4273 | } else { | |
4274 | edid = ERR_PTR(-ENOENT); | |
4275 | } | |
4276 | intel_connector->edid = edid; | |
4277 | ||
4278 | /* prefer fixed mode from EDID if available */ | |
4279 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
4280 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
4281 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 PB |
4282 | downclock_mode = intel_dp_drrs_init( |
4283 | intel_dig_port, | |
4284 | intel_connector, fixed_mode); | |
ed92f0b2 PZ |
4285 | break; |
4286 | } | |
4287 | } | |
4288 | ||
4289 | /* fallback to VBT if available for eDP */ | |
4290 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
4291 | fixed_mode = drm_mode_duplicate(dev, | |
4292 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
4293 | if (fixed_mode) | |
4294 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
4295 | } | |
060c8778 | 4296 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 4297 | |
4f9db5b5 | 4298 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
ed92f0b2 PZ |
4299 | intel_panel_setup_backlight(connector); |
4300 | ||
4301 | return true; | |
4302 | } | |
4303 | ||
16c25533 | 4304 | bool |
f0fec3f2 PZ |
4305 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
4306 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 4307 | { |
f0fec3f2 PZ |
4308 | struct drm_connector *connector = &intel_connector->base; |
4309 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4310 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
4311 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 4312 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 4313 | enum port port = intel_dig_port->port; |
0095e6dc | 4314 | struct edp_power_seq power_seq = { 0 }; |
0b99836f | 4315 | int type; |
a4fc5ed6 | 4316 | |
ec5b01dd DL |
4317 | /* intel_dp vfuncs */ |
4318 | if (IS_VALLEYVIEW(dev)) | |
4319 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; | |
4320 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
4321 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
4322 | else if (HAS_PCH_SPLIT(dev)) | |
4323 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
4324 | else | |
4325 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
4326 | ||
153b1100 DL |
4327 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; |
4328 | ||
0767935e DV |
4329 | /* Preserve the current hw state. */ |
4330 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 4331 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 4332 | |
3b32a35b | 4333 | if (intel_dp_is_edp(dev, port)) |
b329530c | 4334 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
4335 | else |
4336 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 4337 | |
f7d24902 ID |
4338 | /* |
4339 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
4340 | * for DP the encoder type can be set by the caller to | |
4341 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
4342 | */ | |
4343 | if (type == DRM_MODE_CONNECTOR_eDP) | |
4344 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
4345 | ||
e7281eab ID |
4346 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
4347 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
4348 | port_name(port)); | |
4349 | ||
b329530c | 4350 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
4351 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
4352 | ||
a4fc5ed6 KP |
4353 | connector->interlace_allowed = true; |
4354 | connector->doublescan_allowed = 0; | |
4355 | ||
f0fec3f2 | 4356 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 4357 | edp_panel_vdd_work); |
a4fc5ed6 | 4358 | |
df0e9248 | 4359 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 KP |
4360 | drm_sysfs_connector_add(connector); |
4361 | ||
affa9354 | 4362 | if (HAS_DDI(dev)) |
bcbc889b PZ |
4363 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
4364 | else | |
4365 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 4366 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 4367 | |
0b99836f | 4368 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
4369 | switch (port) { |
4370 | case PORT_A: | |
1d843f9d | 4371 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
4372 | break; |
4373 | case PORT_B: | |
1d843f9d | 4374 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
4375 | break; |
4376 | case PORT_C: | |
1d843f9d | 4377 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
4378 | break; |
4379 | case PORT_D: | |
1d843f9d | 4380 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
4381 | break; |
4382 | default: | |
ad1c0b19 | 4383 | BUG(); |
5eb08b69 ZW |
4384 | } |
4385 | ||
dada1a9f ID |
4386 | if (is_edp(intel_dp)) { |
4387 | intel_dp_init_panel_power_timestamps(intel_dp); | |
0095e6dc | 4388 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); |
dada1a9f | 4389 | } |
0095e6dc | 4390 | |
9d1a1031 | 4391 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 4392 | |
0095e6dc | 4393 | if (!intel_edp_init_connector(intel_dp, intel_connector, &power_seq)) { |
4f71d0cb | 4394 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
4395 | if (is_edp(intel_dp)) { |
4396 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
51fd371b | 4397 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4be73780 | 4398 | edp_panel_vdd_off_sync(intel_dp); |
51fd371b | 4399 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
15b1d171 | 4400 | } |
b2f246a8 PZ |
4401 | drm_sysfs_connector_remove(connector); |
4402 | drm_connector_cleanup(connector); | |
16c25533 | 4403 | return false; |
b2f246a8 | 4404 | } |
32f9d658 | 4405 | |
f684960e CW |
4406 | intel_dp_add_properties(intel_dp, connector); |
4407 | ||
a4fc5ed6 KP |
4408 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
4409 | * 0xd. Failure to do so will result in spurious interrupts being | |
4410 | * generated on the port when a cable is not attached. | |
4411 | */ | |
4412 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
4413 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
4414 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
4415 | } | |
16c25533 PZ |
4416 | |
4417 | return true; | |
a4fc5ed6 | 4418 | } |
f0fec3f2 PZ |
4419 | |
4420 | void | |
4421 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
4422 | { | |
13cf5504 | 4423 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
4424 | struct intel_digital_port *intel_dig_port; |
4425 | struct intel_encoder *intel_encoder; | |
4426 | struct drm_encoder *encoder; | |
4427 | struct intel_connector *intel_connector; | |
4428 | ||
b14c5679 | 4429 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
4430 | if (!intel_dig_port) |
4431 | return; | |
4432 | ||
b14c5679 | 4433 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
4434 | if (!intel_connector) { |
4435 | kfree(intel_dig_port); | |
4436 | return; | |
4437 | } | |
4438 | ||
4439 | intel_encoder = &intel_dig_port->base; | |
4440 | encoder = &intel_encoder->base; | |
4441 | ||
4442 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
4443 | DRM_MODE_ENCODER_TMDS); | |
4444 | ||
5bfe2ac0 | 4445 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 4446 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 4447 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 4448 | intel_encoder->get_config = intel_dp_get_config; |
e4a1d846 | 4449 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 4450 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
4451 | intel_encoder->pre_enable = chv_pre_enable_dp; |
4452 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 4453 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 4454 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 4455 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
4456 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
4457 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 4458 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 4459 | } else { |
ecff4f3b JN |
4460 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
4461 | intel_encoder->enable = g4x_enable_dp; | |
49277c31 | 4462 | intel_encoder->post_disable = g4x_post_disable_dp; |
ab1f90f9 | 4463 | } |
f0fec3f2 | 4464 | |
174edf1f | 4465 | intel_dig_port->port = port; |
f0fec3f2 PZ |
4466 | intel_dig_port->dp.output_reg = output_reg; |
4467 | ||
00c09d70 | 4468 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
4469 | if (IS_CHERRYVIEW(dev)) { |
4470 | if (port == PORT_D) | |
4471 | intel_encoder->crtc_mask = 1 << 2; | |
4472 | else | |
4473 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
4474 | } else { | |
4475 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
4476 | } | |
bc079e8b | 4477 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
4478 | intel_encoder->hot_plug = intel_dp_hot_plug; |
4479 | ||
13cf5504 DA |
4480 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
4481 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
4482 | ||
15b1d171 PZ |
4483 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
4484 | drm_encoder_cleanup(encoder); | |
4485 | kfree(intel_dig_port); | |
b2f246a8 | 4486 | kfree(intel_connector); |
15b1d171 | 4487 | } |
f0fec3f2 | 4488 | } |