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[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_hdmi.c
1 /*
2 * Copyright 2006 Dave Airlie <airlied@linux.ie>
3 * Copyright © 2006-2009 Intel Corporation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Eric Anholt <eric@anholt.net>
26 * Jesse Barnes <jesse.barnes@intel.com>
27 */
28
29 #include <linux/i2c.h>
30 #include <linux/slab.h>
31 #include <linux/delay.h>
32 #include <linux/hdmi.h>
33 #include <drm/drmP.h>
34 #include <drm/drm_crtc.h>
35 #include <drm/drm_edid.h>
36 #include "intel_drv.h"
37 #include <drm/i915_drm.h>
38 #include "i915_drv.h"
39
40 static struct drm_device *intel_hdmi_to_dev(struct intel_hdmi *intel_hdmi)
41 {
42 return hdmi_to_dig_port(intel_hdmi)->base.base.dev;
43 }
44
45 static void
46 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
47 {
48 struct drm_device *dev = intel_hdmi_to_dev(intel_hdmi);
49 struct drm_i915_private *dev_priv = dev->dev_private;
50 uint32_t enabled_bits;
51
52 enabled_bits = HAS_DDI(dev) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
53
54 WARN(I915_READ(intel_hdmi->hdmi_reg) & enabled_bits,
55 "HDMI port enabled, expecting disabled\n");
56 }
57
58 struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
59 {
60 struct intel_digital_port *intel_dig_port =
61 container_of(encoder, struct intel_digital_port, base.base);
62 return &intel_dig_port->hdmi;
63 }
64
65 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
66 {
67 return enc_to_intel_hdmi(&intel_attached_encoder(connector)->base);
68 }
69
70 static u32 g4x_infoframe_index(enum hdmi_infoframe_type type)
71 {
72 switch (type) {
73 case HDMI_INFOFRAME_TYPE_AVI:
74 return VIDEO_DIP_SELECT_AVI;
75 case HDMI_INFOFRAME_TYPE_SPD:
76 return VIDEO_DIP_SELECT_SPD;
77 case HDMI_INFOFRAME_TYPE_VENDOR:
78 return VIDEO_DIP_SELECT_VENDOR;
79 default:
80 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
81 return 0;
82 }
83 }
84
85 static u32 g4x_infoframe_enable(enum hdmi_infoframe_type type)
86 {
87 switch (type) {
88 case HDMI_INFOFRAME_TYPE_AVI:
89 return VIDEO_DIP_ENABLE_AVI;
90 case HDMI_INFOFRAME_TYPE_SPD:
91 return VIDEO_DIP_ENABLE_SPD;
92 case HDMI_INFOFRAME_TYPE_VENDOR:
93 return VIDEO_DIP_ENABLE_VENDOR;
94 default:
95 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
96 return 0;
97 }
98 }
99
100 static u32 hsw_infoframe_enable(enum hdmi_infoframe_type type)
101 {
102 switch (type) {
103 case HDMI_INFOFRAME_TYPE_AVI:
104 return VIDEO_DIP_ENABLE_AVI_HSW;
105 case HDMI_INFOFRAME_TYPE_SPD:
106 return VIDEO_DIP_ENABLE_SPD_HSW;
107 case HDMI_INFOFRAME_TYPE_VENDOR:
108 return VIDEO_DIP_ENABLE_VS_HSW;
109 default:
110 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
111 return 0;
112 }
113 }
114
115 static u32 hsw_infoframe_data_reg(enum hdmi_infoframe_type type,
116 enum transcoder cpu_transcoder)
117 {
118 switch (type) {
119 case HDMI_INFOFRAME_TYPE_AVI:
120 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder);
121 case HDMI_INFOFRAME_TYPE_SPD:
122 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder);
123 case HDMI_INFOFRAME_TYPE_VENDOR:
124 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder);
125 default:
126 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
127 return 0;
128 }
129 }
130
131 static void g4x_write_infoframe(struct drm_encoder *encoder,
132 enum hdmi_infoframe_type type,
133 const uint8_t *frame, ssize_t len)
134 {
135 uint32_t *data = (uint32_t *)frame;
136 struct drm_device *dev = encoder->dev;
137 struct drm_i915_private *dev_priv = dev->dev_private;
138 u32 val = I915_READ(VIDEO_DIP_CTL);
139 int i;
140
141 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
142
143 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
144 val |= g4x_infoframe_index(type);
145
146 val &= ~g4x_infoframe_enable(type);
147
148 I915_WRITE(VIDEO_DIP_CTL, val);
149
150 mmiowb();
151 for (i = 0; i < len; i += 4) {
152 I915_WRITE(VIDEO_DIP_DATA, *data);
153 data++;
154 }
155 /* Write every possible data byte to force correct ECC calculation. */
156 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
157 I915_WRITE(VIDEO_DIP_DATA, 0);
158 mmiowb();
159
160 val |= g4x_infoframe_enable(type);
161 val &= ~VIDEO_DIP_FREQ_MASK;
162 val |= VIDEO_DIP_FREQ_VSYNC;
163
164 I915_WRITE(VIDEO_DIP_CTL, val);
165 POSTING_READ(VIDEO_DIP_CTL);
166 }
167
168 static void ibx_write_infoframe(struct drm_encoder *encoder,
169 enum hdmi_infoframe_type type,
170 const uint8_t *frame, ssize_t len)
171 {
172 uint32_t *data = (uint32_t *)frame;
173 struct drm_device *dev = encoder->dev;
174 struct drm_i915_private *dev_priv = dev->dev_private;
175 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
176 int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
177 u32 val = I915_READ(reg);
178
179 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
180
181 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
182 val |= g4x_infoframe_index(type);
183
184 val &= ~g4x_infoframe_enable(type);
185
186 I915_WRITE(reg, val);
187
188 mmiowb();
189 for (i = 0; i < len; i += 4) {
190 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
191 data++;
192 }
193 /* Write every possible data byte to force correct ECC calculation. */
194 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
195 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
196 mmiowb();
197
198 val |= g4x_infoframe_enable(type);
199 val &= ~VIDEO_DIP_FREQ_MASK;
200 val |= VIDEO_DIP_FREQ_VSYNC;
201
202 I915_WRITE(reg, val);
203 POSTING_READ(reg);
204 }
205
206 static void cpt_write_infoframe(struct drm_encoder *encoder,
207 enum hdmi_infoframe_type type,
208 const uint8_t *frame, ssize_t len)
209 {
210 uint32_t *data = (uint32_t *)frame;
211 struct drm_device *dev = encoder->dev;
212 struct drm_i915_private *dev_priv = dev->dev_private;
213 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
214 int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
215 u32 val = I915_READ(reg);
216
217 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
218
219 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
220 val |= g4x_infoframe_index(type);
221
222 /* The DIP control register spec says that we need to update the AVI
223 * infoframe without clearing its enable bit */
224 if (type != HDMI_INFOFRAME_TYPE_AVI)
225 val &= ~g4x_infoframe_enable(type);
226
227 I915_WRITE(reg, val);
228
229 mmiowb();
230 for (i = 0; i < len; i += 4) {
231 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
232 data++;
233 }
234 /* Write every possible data byte to force correct ECC calculation. */
235 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
236 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
237 mmiowb();
238
239 val |= g4x_infoframe_enable(type);
240 val &= ~VIDEO_DIP_FREQ_MASK;
241 val |= VIDEO_DIP_FREQ_VSYNC;
242
243 I915_WRITE(reg, val);
244 POSTING_READ(reg);
245 }
246
247 static void vlv_write_infoframe(struct drm_encoder *encoder,
248 enum hdmi_infoframe_type type,
249 const uint8_t *frame, ssize_t len)
250 {
251 uint32_t *data = (uint32_t *)frame;
252 struct drm_device *dev = encoder->dev;
253 struct drm_i915_private *dev_priv = dev->dev_private;
254 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
255 int i, reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
256 u32 val = I915_READ(reg);
257
258 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
259
260 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
261 val |= g4x_infoframe_index(type);
262
263 val &= ~g4x_infoframe_enable(type);
264
265 I915_WRITE(reg, val);
266
267 mmiowb();
268 for (i = 0; i < len; i += 4) {
269 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
270 data++;
271 }
272 /* Write every possible data byte to force correct ECC calculation. */
273 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
274 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
275 mmiowb();
276
277 val |= g4x_infoframe_enable(type);
278 val &= ~VIDEO_DIP_FREQ_MASK;
279 val |= VIDEO_DIP_FREQ_VSYNC;
280
281 I915_WRITE(reg, val);
282 POSTING_READ(reg);
283 }
284
285 static void hsw_write_infoframe(struct drm_encoder *encoder,
286 enum hdmi_infoframe_type type,
287 const uint8_t *frame, ssize_t len)
288 {
289 uint32_t *data = (uint32_t *)frame;
290 struct drm_device *dev = encoder->dev;
291 struct drm_i915_private *dev_priv = dev->dev_private;
292 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
293 u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
294 u32 data_reg;
295 int i;
296 u32 val = I915_READ(ctl_reg);
297
298 data_reg = hsw_infoframe_data_reg(type,
299 intel_crtc->config.cpu_transcoder);
300 if (data_reg == 0)
301 return;
302
303 val &= ~hsw_infoframe_enable(type);
304 I915_WRITE(ctl_reg, val);
305
306 mmiowb();
307 for (i = 0; i < len; i += 4) {
308 I915_WRITE(data_reg + i, *data);
309 data++;
310 }
311 /* Write every possible data byte to force correct ECC calculation. */
312 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
313 I915_WRITE(data_reg + i, 0);
314 mmiowb();
315
316 val |= hsw_infoframe_enable(type);
317 I915_WRITE(ctl_reg, val);
318 POSTING_READ(ctl_reg);
319 }
320
321 /*
322 * The data we write to the DIP data buffer registers is 1 byte bigger than the
323 * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
324 * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
325 * used for both technologies.
326 *
327 * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
328 * DW1: DB3 | DB2 | DB1 | DB0
329 * DW2: DB7 | DB6 | DB5 | DB4
330 * DW3: ...
331 *
332 * (HB is Header Byte, DB is Data Byte)
333 *
334 * The hdmi pack() functions don't know about that hardware specific hole so we
335 * trick them by giving an offset into the buffer and moving back the header
336 * bytes by one.
337 */
338 static void intel_write_infoframe(struct drm_encoder *encoder,
339 union hdmi_infoframe *frame)
340 {
341 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
342 uint8_t buffer[VIDEO_DIP_DATA_SIZE];
343 ssize_t len;
344
345 /* see comment above for the reason for this offset */
346 len = hdmi_infoframe_pack(frame, buffer + 1, sizeof(buffer) - 1);
347 if (len < 0)
348 return;
349
350 /* Insert the 'hole' (see big comment above) at position 3 */
351 buffer[0] = buffer[1];
352 buffer[1] = buffer[2];
353 buffer[2] = buffer[3];
354 buffer[3] = 0;
355 len++;
356
357 intel_hdmi->write_infoframe(encoder, frame->any.type, buffer, len);
358 }
359
360 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
361 struct drm_display_mode *adjusted_mode)
362 {
363 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
364 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
365 union hdmi_infoframe frame;
366 int ret;
367
368 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
369 adjusted_mode);
370 if (ret < 0) {
371 DRM_ERROR("couldn't fill AVI infoframe\n");
372 return;
373 }
374
375 if (intel_hdmi->rgb_quant_range_selectable) {
376 if (intel_crtc->config.limited_color_range)
377 frame.avi.quantization_range =
378 HDMI_QUANTIZATION_RANGE_LIMITED;
379 else
380 frame.avi.quantization_range =
381 HDMI_QUANTIZATION_RANGE_FULL;
382 }
383
384 intel_write_infoframe(encoder, &frame);
385 }
386
387 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
388 {
389 union hdmi_infoframe frame;
390 int ret;
391
392 ret = hdmi_spd_infoframe_init(&frame.spd, "Intel", "Integrated gfx");
393 if (ret < 0) {
394 DRM_ERROR("couldn't fill SPD infoframe\n");
395 return;
396 }
397
398 frame.spd.sdi = HDMI_SPD_SDI_PC;
399
400 intel_write_infoframe(encoder, &frame);
401 }
402
403 static void
404 intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
405 struct drm_display_mode *adjusted_mode)
406 {
407 union hdmi_infoframe frame;
408 int ret;
409
410 ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
411 adjusted_mode);
412 if (ret < 0)
413 return;
414
415 intel_write_infoframe(encoder, &frame);
416 }
417
418 static void g4x_set_infoframes(struct drm_encoder *encoder,
419 struct drm_display_mode *adjusted_mode)
420 {
421 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
422 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
423 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
424 u32 reg = VIDEO_DIP_CTL;
425 u32 val = I915_READ(reg);
426 u32 port;
427
428 assert_hdmi_port_disabled(intel_hdmi);
429
430 /* If the registers were not initialized yet, they might be zeroes,
431 * which means we're selecting the AVI DIP and we're setting its
432 * frequency to once. This seems to really confuse the HW and make
433 * things stop working (the register spec says the AVI always needs to
434 * be sent every VSync). So here we avoid writing to the register more
435 * than we need and also explicitly select the AVI DIP and explicitly
436 * set its frequency to every VSync. Avoiding to write it twice seems to
437 * be enough to solve the problem, but being defensive shouldn't hurt us
438 * either. */
439 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
440
441 if (!intel_hdmi->has_hdmi_sink) {
442 if (!(val & VIDEO_DIP_ENABLE))
443 return;
444 val &= ~VIDEO_DIP_ENABLE;
445 I915_WRITE(reg, val);
446 POSTING_READ(reg);
447 return;
448 }
449
450 switch (intel_dig_port->port) {
451 case PORT_B:
452 port = VIDEO_DIP_PORT_B;
453 break;
454 case PORT_C:
455 port = VIDEO_DIP_PORT_C;
456 break;
457 default:
458 BUG();
459 return;
460 }
461
462 if (port != (val & VIDEO_DIP_PORT_MASK)) {
463 if (val & VIDEO_DIP_ENABLE) {
464 val &= ~VIDEO_DIP_ENABLE;
465 I915_WRITE(reg, val);
466 POSTING_READ(reg);
467 }
468 val &= ~VIDEO_DIP_PORT_MASK;
469 val |= port;
470 }
471
472 val |= VIDEO_DIP_ENABLE;
473 val &= ~VIDEO_DIP_ENABLE_VENDOR;
474
475 I915_WRITE(reg, val);
476 POSTING_READ(reg);
477
478 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
479 intel_hdmi_set_spd_infoframe(encoder);
480 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
481 }
482
483 static void ibx_set_infoframes(struct drm_encoder *encoder,
484 struct drm_display_mode *adjusted_mode)
485 {
486 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
487 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
488 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
489 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
490 u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
491 u32 val = I915_READ(reg);
492 u32 port;
493
494 assert_hdmi_port_disabled(intel_hdmi);
495
496 /* See the big comment in g4x_set_infoframes() */
497 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
498
499 if (!intel_hdmi->has_hdmi_sink) {
500 if (!(val & VIDEO_DIP_ENABLE))
501 return;
502 val &= ~VIDEO_DIP_ENABLE;
503 I915_WRITE(reg, val);
504 POSTING_READ(reg);
505 return;
506 }
507
508 switch (intel_dig_port->port) {
509 case PORT_B:
510 port = VIDEO_DIP_PORT_B;
511 break;
512 case PORT_C:
513 port = VIDEO_DIP_PORT_C;
514 break;
515 case PORT_D:
516 port = VIDEO_DIP_PORT_D;
517 break;
518 default:
519 BUG();
520 return;
521 }
522
523 if (port != (val & VIDEO_DIP_PORT_MASK)) {
524 if (val & VIDEO_DIP_ENABLE) {
525 val &= ~VIDEO_DIP_ENABLE;
526 I915_WRITE(reg, val);
527 POSTING_READ(reg);
528 }
529 val &= ~VIDEO_DIP_PORT_MASK;
530 val |= port;
531 }
532
533 val |= VIDEO_DIP_ENABLE;
534 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
535 VIDEO_DIP_ENABLE_GCP);
536
537 I915_WRITE(reg, val);
538 POSTING_READ(reg);
539
540 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
541 intel_hdmi_set_spd_infoframe(encoder);
542 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
543 }
544
545 static void cpt_set_infoframes(struct drm_encoder *encoder,
546 struct drm_display_mode *adjusted_mode)
547 {
548 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
549 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
550 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
551 u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
552 u32 val = I915_READ(reg);
553
554 assert_hdmi_port_disabled(intel_hdmi);
555
556 /* See the big comment in g4x_set_infoframes() */
557 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
558
559 if (!intel_hdmi->has_hdmi_sink) {
560 if (!(val & VIDEO_DIP_ENABLE))
561 return;
562 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI);
563 I915_WRITE(reg, val);
564 POSTING_READ(reg);
565 return;
566 }
567
568 /* Set both together, unset both together: see the spec. */
569 val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
570 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
571 VIDEO_DIP_ENABLE_GCP);
572
573 I915_WRITE(reg, val);
574 POSTING_READ(reg);
575
576 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
577 intel_hdmi_set_spd_infoframe(encoder);
578 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
579 }
580
581 static void vlv_set_infoframes(struct drm_encoder *encoder,
582 struct drm_display_mode *adjusted_mode)
583 {
584 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
585 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
586 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
587 u32 reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
588 u32 val = I915_READ(reg);
589
590 assert_hdmi_port_disabled(intel_hdmi);
591
592 /* See the big comment in g4x_set_infoframes() */
593 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
594
595 if (!intel_hdmi->has_hdmi_sink) {
596 if (!(val & VIDEO_DIP_ENABLE))
597 return;
598 val &= ~VIDEO_DIP_ENABLE;
599 I915_WRITE(reg, val);
600 POSTING_READ(reg);
601 return;
602 }
603
604 val |= VIDEO_DIP_ENABLE;
605 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
606 VIDEO_DIP_ENABLE_GCP);
607
608 I915_WRITE(reg, val);
609 POSTING_READ(reg);
610
611 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
612 intel_hdmi_set_spd_infoframe(encoder);
613 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
614 }
615
616 static void hsw_set_infoframes(struct drm_encoder *encoder,
617 struct drm_display_mode *adjusted_mode)
618 {
619 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
620 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
621 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
622 u32 reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
623 u32 val = I915_READ(reg);
624
625 assert_hdmi_port_disabled(intel_hdmi);
626
627 if (!intel_hdmi->has_hdmi_sink) {
628 I915_WRITE(reg, 0);
629 POSTING_READ(reg);
630 return;
631 }
632
633 val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_GCP_HSW |
634 VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW);
635
636 I915_WRITE(reg, val);
637 POSTING_READ(reg);
638
639 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
640 intel_hdmi_set_spd_infoframe(encoder);
641 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
642 }
643
644 static void intel_hdmi_mode_set(struct intel_encoder *encoder)
645 {
646 struct drm_device *dev = encoder->base.dev;
647 struct drm_i915_private *dev_priv = dev->dev_private;
648 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
649 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
650 struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode;
651 u32 hdmi_val;
652
653 hdmi_val = SDVO_ENCODING_HDMI;
654 if (!HAS_PCH_SPLIT(dev))
655 hdmi_val |= intel_hdmi->color_range;
656 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
657 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
658 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
659 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
660
661 if (crtc->config.pipe_bpp > 24)
662 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
663 else
664 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
665
666 /* Required on CPT */
667 if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
668 hdmi_val |= HDMI_MODE_SELECT_HDMI;
669
670 if (intel_hdmi->has_audio) {
671 DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
672 pipe_name(crtc->pipe));
673 hdmi_val |= SDVO_AUDIO_ENABLE;
674 hdmi_val |= HDMI_MODE_SELECT_HDMI;
675 intel_write_eld(&encoder->base, adjusted_mode);
676 }
677
678 if (HAS_PCH_CPT(dev))
679 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
680 else
681 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
682
683 I915_WRITE(intel_hdmi->hdmi_reg, hdmi_val);
684 POSTING_READ(intel_hdmi->hdmi_reg);
685
686 intel_hdmi->set_infoframes(&encoder->base, adjusted_mode);
687 }
688
689 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
690 enum pipe *pipe)
691 {
692 struct drm_device *dev = encoder->base.dev;
693 struct drm_i915_private *dev_priv = dev->dev_private;
694 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
695 u32 tmp;
696
697 tmp = I915_READ(intel_hdmi->hdmi_reg);
698
699 if (!(tmp & SDVO_ENABLE))
700 return false;
701
702 if (HAS_PCH_CPT(dev))
703 *pipe = PORT_TO_PIPE_CPT(tmp);
704 else
705 *pipe = PORT_TO_PIPE(tmp);
706
707 return true;
708 }
709
710 static void intel_hdmi_get_config(struct intel_encoder *encoder,
711 struct intel_crtc_config *pipe_config)
712 {
713 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
714 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
715 u32 tmp, flags = 0;
716 int dotclock;
717
718 tmp = I915_READ(intel_hdmi->hdmi_reg);
719
720 if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
721 flags |= DRM_MODE_FLAG_PHSYNC;
722 else
723 flags |= DRM_MODE_FLAG_NHSYNC;
724
725 if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
726 flags |= DRM_MODE_FLAG_PVSYNC;
727 else
728 flags |= DRM_MODE_FLAG_NVSYNC;
729
730 pipe_config->adjusted_mode.flags |= flags;
731
732 if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
733 dotclock = pipe_config->port_clock * 2 / 3;
734 else
735 dotclock = pipe_config->port_clock;
736
737 if (HAS_PCH_SPLIT(dev_priv->dev))
738 ironlake_check_encoder_dotclock(pipe_config, dotclock);
739
740 pipe_config->adjusted_mode.clock = dotclock;
741 }
742
743 static void intel_enable_hdmi(struct intel_encoder *encoder)
744 {
745 struct drm_device *dev = encoder->base.dev;
746 struct drm_i915_private *dev_priv = dev->dev_private;
747 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
748 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
749 u32 temp;
750 u32 enable_bits = SDVO_ENABLE;
751
752 if (intel_hdmi->has_audio)
753 enable_bits |= SDVO_AUDIO_ENABLE;
754
755 temp = I915_READ(intel_hdmi->hdmi_reg);
756
757 /* HW workaround for IBX, we need to move the port to transcoder A
758 * before disabling it, so restore the transcoder select bit here. */
759 if (HAS_PCH_IBX(dev))
760 enable_bits |= SDVO_PIPE_SEL(intel_crtc->pipe);
761
762 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
763 * we do this anyway which shows more stable in testing.
764 */
765 if (HAS_PCH_SPLIT(dev)) {
766 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
767 POSTING_READ(intel_hdmi->hdmi_reg);
768 }
769
770 temp |= enable_bits;
771
772 I915_WRITE(intel_hdmi->hdmi_reg, temp);
773 POSTING_READ(intel_hdmi->hdmi_reg);
774
775 /* HW workaround, need to write this twice for issue that may result
776 * in first write getting masked.
777 */
778 if (HAS_PCH_SPLIT(dev)) {
779 I915_WRITE(intel_hdmi->hdmi_reg, temp);
780 POSTING_READ(intel_hdmi->hdmi_reg);
781 }
782 }
783
784 static void vlv_enable_hdmi(struct intel_encoder *encoder)
785 {
786 }
787
788 static void intel_disable_hdmi(struct intel_encoder *encoder)
789 {
790 struct drm_device *dev = encoder->base.dev;
791 struct drm_i915_private *dev_priv = dev->dev_private;
792 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
793 u32 temp;
794 u32 enable_bits = SDVO_ENABLE | SDVO_AUDIO_ENABLE;
795
796 temp = I915_READ(intel_hdmi->hdmi_reg);
797
798 /* HW workaround for IBX, we need to move the port to transcoder A
799 * before disabling it. */
800 if (HAS_PCH_IBX(dev)) {
801 struct drm_crtc *crtc = encoder->base.crtc;
802 int pipe = crtc ? to_intel_crtc(crtc)->pipe : -1;
803
804 if (temp & SDVO_PIPE_B_SELECT) {
805 temp &= ~SDVO_PIPE_B_SELECT;
806 I915_WRITE(intel_hdmi->hdmi_reg, temp);
807 POSTING_READ(intel_hdmi->hdmi_reg);
808
809 /* Again we need to write this twice. */
810 I915_WRITE(intel_hdmi->hdmi_reg, temp);
811 POSTING_READ(intel_hdmi->hdmi_reg);
812
813 /* Transcoder selection bits only update
814 * effectively on vblank. */
815 if (crtc)
816 intel_wait_for_vblank(dev, pipe);
817 else
818 msleep(50);
819 }
820 }
821
822 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
823 * we do this anyway which shows more stable in testing.
824 */
825 if (HAS_PCH_SPLIT(dev)) {
826 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
827 POSTING_READ(intel_hdmi->hdmi_reg);
828 }
829
830 temp &= ~enable_bits;
831
832 I915_WRITE(intel_hdmi->hdmi_reg, temp);
833 POSTING_READ(intel_hdmi->hdmi_reg);
834
835 /* HW workaround, need to write this twice for issue that may result
836 * in first write getting masked.
837 */
838 if (HAS_PCH_SPLIT(dev)) {
839 I915_WRITE(intel_hdmi->hdmi_reg, temp);
840 POSTING_READ(intel_hdmi->hdmi_reg);
841 }
842 }
843
844 static int hdmi_portclock_limit(struct intel_hdmi *hdmi)
845 {
846 struct drm_device *dev = intel_hdmi_to_dev(hdmi);
847
848 if (IS_G4X(dev))
849 return 165000;
850 else if (IS_HASWELL(dev))
851 return 300000;
852 else
853 return 225000;
854 }
855
856 static int intel_hdmi_mode_valid(struct drm_connector *connector,
857 struct drm_display_mode *mode)
858 {
859 if (mode->clock > hdmi_portclock_limit(intel_attached_hdmi(connector)))
860 return MODE_CLOCK_HIGH;
861 if (mode->clock < 20000)
862 return MODE_CLOCK_LOW;
863
864 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
865 return MODE_NO_DBLESCAN;
866
867 return MODE_OK;
868 }
869
870 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
871 struct intel_crtc_config *pipe_config)
872 {
873 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
874 struct drm_device *dev = encoder->base.dev;
875 struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
876 int clock_12bpc = pipe_config->adjusted_mode.clock * 3 / 2;
877 int portclock_limit = hdmi_portclock_limit(intel_hdmi);
878 int desired_bpp;
879
880 if (intel_hdmi->color_range_auto) {
881 /* See CEA-861-E - 5.1 Default Encoding Parameters */
882 if (intel_hdmi->has_hdmi_sink &&
883 drm_match_cea_mode(adjusted_mode) > 1)
884 intel_hdmi->color_range = HDMI_COLOR_RANGE_16_235;
885 else
886 intel_hdmi->color_range = 0;
887 }
888
889 if (intel_hdmi->color_range)
890 pipe_config->limited_color_range = true;
891
892 if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev))
893 pipe_config->has_pch_encoder = true;
894
895 /*
896 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
897 * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
898 * outputs. We also need to check that the higher clock still fits
899 * within limits.
900 */
901 if (pipe_config->pipe_bpp > 8*3 && clock_12bpc <= portclock_limit
902 && HAS_PCH_SPLIT(dev)) {
903 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
904 desired_bpp = 12*3;
905
906 /* Need to adjust the port link by 1.5x for 12bpc. */
907 pipe_config->port_clock = clock_12bpc;
908 } else {
909 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
910 desired_bpp = 8*3;
911 }
912
913 if (!pipe_config->bw_constrained) {
914 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
915 pipe_config->pipe_bpp = desired_bpp;
916 }
917
918 if (adjusted_mode->clock > portclock_limit) {
919 DRM_DEBUG_KMS("too high HDMI clock, rejecting mode\n");
920 return false;
921 }
922
923 return true;
924 }
925
926 static enum drm_connector_status
927 intel_hdmi_detect(struct drm_connector *connector, bool force)
928 {
929 struct drm_device *dev = connector->dev;
930 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
931 struct intel_digital_port *intel_dig_port =
932 hdmi_to_dig_port(intel_hdmi);
933 struct intel_encoder *intel_encoder = &intel_dig_port->base;
934 struct drm_i915_private *dev_priv = dev->dev_private;
935 struct edid *edid;
936 enum drm_connector_status status = connector_status_disconnected;
937
938 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
939 connector->base.id, drm_get_connector_name(connector));
940
941 intel_hdmi->has_hdmi_sink = false;
942 intel_hdmi->has_audio = false;
943 intel_hdmi->rgb_quant_range_selectable = false;
944 edid = drm_get_edid(connector,
945 intel_gmbus_get_adapter(dev_priv,
946 intel_hdmi->ddc_bus));
947
948 if (edid) {
949 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
950 status = connector_status_connected;
951 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
952 intel_hdmi->has_hdmi_sink =
953 drm_detect_hdmi_monitor(edid);
954 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
955 intel_hdmi->rgb_quant_range_selectable =
956 drm_rgb_quant_range_selectable(edid);
957 }
958 kfree(edid);
959 }
960
961 if (status == connector_status_connected) {
962 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
963 intel_hdmi->has_audio =
964 (intel_hdmi->force_audio == HDMI_AUDIO_ON);
965 intel_encoder->type = INTEL_OUTPUT_HDMI;
966 }
967
968 return status;
969 }
970
971 static int intel_hdmi_get_modes(struct drm_connector *connector)
972 {
973 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
974 struct drm_i915_private *dev_priv = connector->dev->dev_private;
975
976 /* We should parse the EDID data and find out if it's an HDMI sink so
977 * we can send audio to it.
978 */
979
980 return intel_ddc_get_modes(connector,
981 intel_gmbus_get_adapter(dev_priv,
982 intel_hdmi->ddc_bus));
983 }
984
985 static bool
986 intel_hdmi_detect_audio(struct drm_connector *connector)
987 {
988 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
989 struct drm_i915_private *dev_priv = connector->dev->dev_private;
990 struct edid *edid;
991 bool has_audio = false;
992
993 edid = drm_get_edid(connector,
994 intel_gmbus_get_adapter(dev_priv,
995 intel_hdmi->ddc_bus));
996 if (edid) {
997 if (edid->input & DRM_EDID_INPUT_DIGITAL)
998 has_audio = drm_detect_monitor_audio(edid);
999 kfree(edid);
1000 }
1001
1002 return has_audio;
1003 }
1004
1005 static int
1006 intel_hdmi_set_property(struct drm_connector *connector,
1007 struct drm_property *property,
1008 uint64_t val)
1009 {
1010 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1011 struct intel_digital_port *intel_dig_port =
1012 hdmi_to_dig_port(intel_hdmi);
1013 struct drm_i915_private *dev_priv = connector->dev->dev_private;
1014 int ret;
1015
1016 ret = drm_object_property_set_value(&connector->base, property, val);
1017 if (ret)
1018 return ret;
1019
1020 if (property == dev_priv->force_audio_property) {
1021 enum hdmi_force_audio i = val;
1022 bool has_audio;
1023
1024 if (i == intel_hdmi->force_audio)
1025 return 0;
1026
1027 intel_hdmi->force_audio = i;
1028
1029 if (i == HDMI_AUDIO_AUTO)
1030 has_audio = intel_hdmi_detect_audio(connector);
1031 else
1032 has_audio = (i == HDMI_AUDIO_ON);
1033
1034 if (i == HDMI_AUDIO_OFF_DVI)
1035 intel_hdmi->has_hdmi_sink = 0;
1036
1037 intel_hdmi->has_audio = has_audio;
1038 goto done;
1039 }
1040
1041 if (property == dev_priv->broadcast_rgb_property) {
1042 bool old_auto = intel_hdmi->color_range_auto;
1043 uint32_t old_range = intel_hdmi->color_range;
1044
1045 switch (val) {
1046 case INTEL_BROADCAST_RGB_AUTO:
1047 intel_hdmi->color_range_auto = true;
1048 break;
1049 case INTEL_BROADCAST_RGB_FULL:
1050 intel_hdmi->color_range_auto = false;
1051 intel_hdmi->color_range = 0;
1052 break;
1053 case INTEL_BROADCAST_RGB_LIMITED:
1054 intel_hdmi->color_range_auto = false;
1055 intel_hdmi->color_range = HDMI_COLOR_RANGE_16_235;
1056 break;
1057 default:
1058 return -EINVAL;
1059 }
1060
1061 if (old_auto == intel_hdmi->color_range_auto &&
1062 old_range == intel_hdmi->color_range)
1063 return 0;
1064
1065 goto done;
1066 }
1067
1068 return -EINVAL;
1069
1070 done:
1071 if (intel_dig_port->base.base.crtc)
1072 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1073
1074 return 0;
1075 }
1076
1077 static void intel_hdmi_pre_enable(struct intel_encoder *encoder)
1078 {
1079 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1080 struct drm_device *dev = encoder->base.dev;
1081 struct drm_i915_private *dev_priv = dev->dev_private;
1082 struct intel_crtc *intel_crtc =
1083 to_intel_crtc(encoder->base.crtc);
1084 int port = vlv_dport_to_channel(dport);
1085 int pipe = intel_crtc->pipe;
1086 u32 val;
1087
1088 if (!IS_VALLEYVIEW(dev))
1089 return;
1090
1091 /* Enable clock channels for this port */
1092 mutex_lock(&dev_priv->dpio_lock);
1093 val = vlv_dpio_read(dev_priv, pipe, DPIO_DATA_LANE_A(port));
1094 val = 0;
1095 if (pipe)
1096 val |= (1<<21);
1097 else
1098 val &= ~(1<<21);
1099 val |= 0x001000c4;
1100 vlv_dpio_write(dev_priv, pipe, DPIO_DATA_CHANNEL(port), val);
1101
1102 /* HDMI 1.0V-2dB */
1103 vlv_dpio_write(dev_priv, pipe, DPIO_TX_OCALINIT(port), 0);
1104 vlv_dpio_write(dev_priv, pipe, DPIO_TX_SWING_CTL4(port),
1105 0x2b245f5f);
1106 vlv_dpio_write(dev_priv, pipe, DPIO_TX_SWING_CTL2(port),
1107 0x5578b83a);
1108 vlv_dpio_write(dev_priv, pipe, DPIO_TX_SWING_CTL3(port),
1109 0x0c782040);
1110 vlv_dpio_write(dev_priv, pipe, DPIO_TX3_SWING_CTL4(port),
1111 0x2b247878);
1112 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_STAGGER0(port), 0x00030000);
1113 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_CTL_OVER1(port),
1114 0x00002000);
1115 vlv_dpio_write(dev_priv, pipe, DPIO_TX_OCALINIT(port),
1116 DPIO_TX_OCALINIT_EN);
1117
1118 /* Program lane clock */
1119 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_CLOCKBUF0(port),
1120 0x00760018);
1121 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_CLOCKBUF8(port),
1122 0x00400888);
1123 mutex_unlock(&dev_priv->dpio_lock);
1124
1125 intel_enable_hdmi(encoder);
1126
1127 vlv_wait_port_ready(dev_priv, port);
1128 }
1129
1130 static void intel_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1131 {
1132 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1133 struct drm_device *dev = encoder->base.dev;
1134 struct drm_i915_private *dev_priv = dev->dev_private;
1135 struct intel_crtc *intel_crtc =
1136 to_intel_crtc(encoder->base.crtc);
1137 int port = vlv_dport_to_channel(dport);
1138 int pipe = intel_crtc->pipe;
1139
1140 if (!IS_VALLEYVIEW(dev))
1141 return;
1142
1143 /* Program Tx lane resets to default */
1144 mutex_lock(&dev_priv->dpio_lock);
1145 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_TX(port),
1146 DPIO_PCS_TX_LANE2_RESET |
1147 DPIO_PCS_TX_LANE1_RESET);
1148 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_CLK(port),
1149 DPIO_PCS_CLK_CRI_RXEB_EIOS_EN |
1150 DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN |
1151 (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) |
1152 DPIO_PCS_CLK_SOFT_RESET);
1153
1154 /* Fix up inter-pair skew failure */
1155 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_STAGGER1(port), 0x00750f00);
1156 vlv_dpio_write(dev_priv, pipe, DPIO_TX_CTL(port), 0x00001500);
1157 vlv_dpio_write(dev_priv, pipe, DPIO_TX_LANE(port), 0x40400000);
1158
1159 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_CTL_OVER1(port),
1160 0x00002000);
1161 vlv_dpio_write(dev_priv, pipe, DPIO_TX_OCALINIT(port),
1162 DPIO_TX_OCALINIT_EN);
1163 mutex_unlock(&dev_priv->dpio_lock);
1164 }
1165
1166 static void intel_hdmi_post_disable(struct intel_encoder *encoder)
1167 {
1168 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1169 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
1170 struct intel_crtc *intel_crtc =
1171 to_intel_crtc(encoder->base.crtc);
1172 int port = vlv_dport_to_channel(dport);
1173 int pipe = intel_crtc->pipe;
1174
1175 /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1176 mutex_lock(&dev_priv->dpio_lock);
1177 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_TX(port), 0x00000000);
1178 vlv_dpio_write(dev_priv, pipe, DPIO_PCS_CLK(port), 0x00e00060);
1179 mutex_unlock(&dev_priv->dpio_lock);
1180 }
1181
1182 static void intel_hdmi_destroy(struct drm_connector *connector)
1183 {
1184 drm_sysfs_connector_remove(connector);
1185 drm_connector_cleanup(connector);
1186 kfree(connector);
1187 }
1188
1189 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
1190 .dpms = intel_connector_dpms,
1191 .detect = intel_hdmi_detect,
1192 .fill_modes = drm_helper_probe_single_connector_modes,
1193 .set_property = intel_hdmi_set_property,
1194 .destroy = intel_hdmi_destroy,
1195 };
1196
1197 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
1198 .get_modes = intel_hdmi_get_modes,
1199 .mode_valid = intel_hdmi_mode_valid,
1200 .best_encoder = intel_best_encoder,
1201 };
1202
1203 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
1204 .destroy = intel_encoder_destroy,
1205 };
1206
1207 static void
1208 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
1209 {
1210 intel_attach_force_audio_property(connector);
1211 intel_attach_broadcast_rgb_property(connector);
1212 intel_hdmi->color_range_auto = true;
1213 }
1214
1215 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1216 struct intel_connector *intel_connector)
1217 {
1218 struct drm_connector *connector = &intel_connector->base;
1219 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
1220 struct intel_encoder *intel_encoder = &intel_dig_port->base;
1221 struct drm_device *dev = intel_encoder->base.dev;
1222 struct drm_i915_private *dev_priv = dev->dev_private;
1223 enum port port = intel_dig_port->port;
1224
1225 drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
1226 DRM_MODE_CONNECTOR_HDMIA);
1227 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
1228
1229 connector->interlace_allowed = 1;
1230 connector->doublescan_allowed = 0;
1231
1232 switch (port) {
1233 case PORT_B:
1234 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
1235 intel_encoder->hpd_pin = HPD_PORT_B;
1236 break;
1237 case PORT_C:
1238 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
1239 intel_encoder->hpd_pin = HPD_PORT_C;
1240 break;
1241 case PORT_D:
1242 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
1243 intel_encoder->hpd_pin = HPD_PORT_D;
1244 break;
1245 case PORT_A:
1246 intel_encoder->hpd_pin = HPD_PORT_A;
1247 /* Internal port only for eDP. */
1248 default:
1249 BUG();
1250 }
1251
1252 if (IS_VALLEYVIEW(dev)) {
1253 intel_hdmi->write_infoframe = vlv_write_infoframe;
1254 intel_hdmi->set_infoframes = vlv_set_infoframes;
1255 } else if (!HAS_PCH_SPLIT(dev)) {
1256 intel_hdmi->write_infoframe = g4x_write_infoframe;
1257 intel_hdmi->set_infoframes = g4x_set_infoframes;
1258 } else if (HAS_DDI(dev)) {
1259 intel_hdmi->write_infoframe = hsw_write_infoframe;
1260 intel_hdmi->set_infoframes = hsw_set_infoframes;
1261 } else if (HAS_PCH_IBX(dev)) {
1262 intel_hdmi->write_infoframe = ibx_write_infoframe;
1263 intel_hdmi->set_infoframes = ibx_set_infoframes;
1264 } else {
1265 intel_hdmi->write_infoframe = cpt_write_infoframe;
1266 intel_hdmi->set_infoframes = cpt_set_infoframes;
1267 }
1268
1269 if (HAS_DDI(dev))
1270 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
1271 else
1272 intel_connector->get_hw_state = intel_connector_get_hw_state;
1273
1274 intel_hdmi_add_properties(intel_hdmi, connector);
1275
1276 intel_connector_attach_encoder(intel_connector, intel_encoder);
1277 drm_sysfs_connector_add(connector);
1278
1279 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
1280 * 0xd. Failure to do so will result in spurious interrupts being
1281 * generated on the port when a cable is not attached.
1282 */
1283 if (IS_G4X(dev) && !IS_GM45(dev)) {
1284 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
1285 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
1286 }
1287 }
1288
1289 void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port)
1290 {
1291 struct intel_digital_port *intel_dig_port;
1292 struct intel_encoder *intel_encoder;
1293 struct intel_connector *intel_connector;
1294
1295 intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL);
1296 if (!intel_dig_port)
1297 return;
1298
1299 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
1300 if (!intel_connector) {
1301 kfree(intel_dig_port);
1302 return;
1303 }
1304
1305 intel_encoder = &intel_dig_port->base;
1306
1307 drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
1308 DRM_MODE_ENCODER_TMDS);
1309
1310 intel_encoder->compute_config = intel_hdmi_compute_config;
1311 intel_encoder->mode_set = intel_hdmi_mode_set;
1312 intel_encoder->disable = intel_disable_hdmi;
1313 intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
1314 intel_encoder->get_config = intel_hdmi_get_config;
1315 if (IS_VALLEYVIEW(dev)) {
1316 intel_encoder->pre_pll_enable = intel_hdmi_pre_pll_enable;
1317 intel_encoder->pre_enable = intel_hdmi_pre_enable;
1318 intel_encoder->enable = vlv_enable_hdmi;
1319 intel_encoder->post_disable = intel_hdmi_post_disable;
1320 } else {
1321 intel_encoder->enable = intel_enable_hdmi;
1322 }
1323
1324 intel_encoder->type = INTEL_OUTPUT_HDMI;
1325 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
1326 intel_encoder->cloneable = false;
1327
1328 intel_dig_port->port = port;
1329 intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
1330 intel_dig_port->dp.output_reg = 0;
1331
1332 intel_hdmi_init_connector(intel_dig_port, intel_connector);
1333 }
Linux kernel - Deliverables
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