drm: add register and unregister functions for connectors
[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 struct drm_i915_private *dev_priv)
118 {
119 switch (type) {
120 case HDMI_INFOFRAME_TYPE_AVI:
121 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder);
122 case HDMI_INFOFRAME_TYPE_SPD:
123 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder);
124 case HDMI_INFOFRAME_TYPE_VENDOR:
125 return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder);
126 default:
127 DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
128 return 0;
129 }
130 }
131
132 static void g4x_write_infoframe(struct drm_encoder *encoder,
133 enum hdmi_infoframe_type type,
134 const void *frame, ssize_t len)
135 {
136 const uint32_t *data = frame;
137 struct drm_device *dev = encoder->dev;
138 struct drm_i915_private *dev_priv = dev->dev_private;
139 u32 val = I915_READ(VIDEO_DIP_CTL);
140 int i;
141
142 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
143
144 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
145 val |= g4x_infoframe_index(type);
146
147 val &= ~g4x_infoframe_enable(type);
148
149 I915_WRITE(VIDEO_DIP_CTL, val);
150
151 mmiowb();
152 for (i = 0; i < len; i += 4) {
153 I915_WRITE(VIDEO_DIP_DATA, *data);
154 data++;
155 }
156 /* Write every possible data byte to force correct ECC calculation. */
157 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
158 I915_WRITE(VIDEO_DIP_DATA, 0);
159 mmiowb();
160
161 val |= g4x_infoframe_enable(type);
162 val &= ~VIDEO_DIP_FREQ_MASK;
163 val |= VIDEO_DIP_FREQ_VSYNC;
164
165 I915_WRITE(VIDEO_DIP_CTL, val);
166 POSTING_READ(VIDEO_DIP_CTL);
167 }
168
169 static void ibx_write_infoframe(struct drm_encoder *encoder,
170 enum hdmi_infoframe_type type,
171 const void *frame, ssize_t len)
172 {
173 const uint32_t *data = frame;
174 struct drm_device *dev = encoder->dev;
175 struct drm_i915_private *dev_priv = dev->dev_private;
176 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
177 int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
178 u32 val = I915_READ(reg);
179
180 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
181
182 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
183 val |= g4x_infoframe_index(type);
184
185 val &= ~g4x_infoframe_enable(type);
186
187 I915_WRITE(reg, val);
188
189 mmiowb();
190 for (i = 0; i < len; i += 4) {
191 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
192 data++;
193 }
194 /* Write every possible data byte to force correct ECC calculation. */
195 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
196 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
197 mmiowb();
198
199 val |= g4x_infoframe_enable(type);
200 val &= ~VIDEO_DIP_FREQ_MASK;
201 val |= VIDEO_DIP_FREQ_VSYNC;
202
203 I915_WRITE(reg, val);
204 POSTING_READ(reg);
205 }
206
207 static void cpt_write_infoframe(struct drm_encoder *encoder,
208 enum hdmi_infoframe_type type,
209 const void *frame, ssize_t len)
210 {
211 const uint32_t *data = frame;
212 struct drm_device *dev = encoder->dev;
213 struct drm_i915_private *dev_priv = dev->dev_private;
214 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
215 int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
216 u32 val = I915_READ(reg);
217
218 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
219
220 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
221 val |= g4x_infoframe_index(type);
222
223 /* The DIP control register spec says that we need to update the AVI
224 * infoframe without clearing its enable bit */
225 if (type != HDMI_INFOFRAME_TYPE_AVI)
226 val &= ~g4x_infoframe_enable(type);
227
228 I915_WRITE(reg, val);
229
230 mmiowb();
231 for (i = 0; i < len; i += 4) {
232 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
233 data++;
234 }
235 /* Write every possible data byte to force correct ECC calculation. */
236 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
237 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
238 mmiowb();
239
240 val |= g4x_infoframe_enable(type);
241 val &= ~VIDEO_DIP_FREQ_MASK;
242 val |= VIDEO_DIP_FREQ_VSYNC;
243
244 I915_WRITE(reg, val);
245 POSTING_READ(reg);
246 }
247
248 static void vlv_write_infoframe(struct drm_encoder *encoder,
249 enum hdmi_infoframe_type type,
250 const void *frame, ssize_t len)
251 {
252 const uint32_t *data = frame;
253 struct drm_device *dev = encoder->dev;
254 struct drm_i915_private *dev_priv = dev->dev_private;
255 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
256 int i, reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
257 u32 val = I915_READ(reg);
258
259 WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
260
261 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
262 val |= g4x_infoframe_index(type);
263
264 val &= ~g4x_infoframe_enable(type);
265
266 I915_WRITE(reg, val);
267
268 mmiowb();
269 for (i = 0; i < len; i += 4) {
270 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
271 data++;
272 }
273 /* Write every possible data byte to force correct ECC calculation. */
274 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
275 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
276 mmiowb();
277
278 val |= g4x_infoframe_enable(type);
279 val &= ~VIDEO_DIP_FREQ_MASK;
280 val |= VIDEO_DIP_FREQ_VSYNC;
281
282 I915_WRITE(reg, val);
283 POSTING_READ(reg);
284 }
285
286 static void hsw_write_infoframe(struct drm_encoder *encoder,
287 enum hdmi_infoframe_type type,
288 const void *frame, ssize_t len)
289 {
290 const uint32_t *data = frame;
291 struct drm_device *dev = encoder->dev;
292 struct drm_i915_private *dev_priv = dev->dev_private;
293 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
294 u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
295 u32 data_reg;
296 int i;
297 u32 val = I915_READ(ctl_reg);
298
299 data_reg = hsw_infoframe_data_reg(type,
300 intel_crtc->config.cpu_transcoder,
301 dev_priv);
302 if (data_reg == 0)
303 return;
304
305 val &= ~hsw_infoframe_enable(type);
306 I915_WRITE(ctl_reg, val);
307
308 mmiowb();
309 for (i = 0; i < len; i += 4) {
310 I915_WRITE(data_reg + i, *data);
311 data++;
312 }
313 /* Write every possible data byte to force correct ECC calculation. */
314 for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
315 I915_WRITE(data_reg + i, 0);
316 mmiowb();
317
318 val |= hsw_infoframe_enable(type);
319 I915_WRITE(ctl_reg, val);
320 POSTING_READ(ctl_reg);
321 }
322
323 /*
324 * The data we write to the DIP data buffer registers is 1 byte bigger than the
325 * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
326 * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
327 * used for both technologies.
328 *
329 * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
330 * DW1: DB3 | DB2 | DB1 | DB0
331 * DW2: DB7 | DB6 | DB5 | DB4
332 * DW3: ...
333 *
334 * (HB is Header Byte, DB is Data Byte)
335 *
336 * The hdmi pack() functions don't know about that hardware specific hole so we
337 * trick them by giving an offset into the buffer and moving back the header
338 * bytes by one.
339 */
340 static void intel_write_infoframe(struct drm_encoder *encoder,
341 union hdmi_infoframe *frame)
342 {
343 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
344 uint8_t buffer[VIDEO_DIP_DATA_SIZE];
345 ssize_t len;
346
347 /* see comment above for the reason for this offset */
348 len = hdmi_infoframe_pack(frame, buffer + 1, sizeof(buffer) - 1);
349 if (len < 0)
350 return;
351
352 /* Insert the 'hole' (see big comment above) at position 3 */
353 buffer[0] = buffer[1];
354 buffer[1] = buffer[2];
355 buffer[2] = buffer[3];
356 buffer[3] = 0;
357 len++;
358
359 intel_hdmi->write_infoframe(encoder, frame->any.type, buffer, len);
360 }
361
362 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
363 struct drm_display_mode *adjusted_mode)
364 {
365 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
366 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
367 union hdmi_infoframe frame;
368 int ret;
369
370 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
371 adjusted_mode);
372 if (ret < 0) {
373 DRM_ERROR("couldn't fill AVI infoframe\n");
374 return;
375 }
376
377 if (intel_hdmi->rgb_quant_range_selectable) {
378 if (intel_crtc->config.limited_color_range)
379 frame.avi.quantization_range =
380 HDMI_QUANTIZATION_RANGE_LIMITED;
381 else
382 frame.avi.quantization_range =
383 HDMI_QUANTIZATION_RANGE_FULL;
384 }
385
386 intel_write_infoframe(encoder, &frame);
387 }
388
389 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
390 {
391 union hdmi_infoframe frame;
392 int ret;
393
394 ret = hdmi_spd_infoframe_init(&frame.spd, "Intel", "Integrated gfx");
395 if (ret < 0) {
396 DRM_ERROR("couldn't fill SPD infoframe\n");
397 return;
398 }
399
400 frame.spd.sdi = HDMI_SPD_SDI_PC;
401
402 intel_write_infoframe(encoder, &frame);
403 }
404
405 static void
406 intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
407 struct drm_display_mode *adjusted_mode)
408 {
409 union hdmi_infoframe frame;
410 int ret;
411
412 ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
413 adjusted_mode);
414 if (ret < 0)
415 return;
416
417 intel_write_infoframe(encoder, &frame);
418 }
419
420 static void g4x_set_infoframes(struct drm_encoder *encoder,
421 bool enable,
422 struct drm_display_mode *adjusted_mode)
423 {
424 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
425 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
426 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
427 u32 reg = VIDEO_DIP_CTL;
428 u32 val = I915_READ(reg);
429 u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
430
431 assert_hdmi_port_disabled(intel_hdmi);
432
433 /* If the registers were not initialized yet, they might be zeroes,
434 * which means we're selecting the AVI DIP and we're setting its
435 * frequency to once. This seems to really confuse the HW and make
436 * things stop working (the register spec says the AVI always needs to
437 * be sent every VSync). So here we avoid writing to the register more
438 * than we need and also explicitly select the AVI DIP and explicitly
439 * set its frequency to every VSync. Avoiding to write it twice seems to
440 * be enough to solve the problem, but being defensive shouldn't hurt us
441 * either. */
442 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
443
444 if (!enable) {
445 if (!(val & VIDEO_DIP_ENABLE))
446 return;
447 val &= ~VIDEO_DIP_ENABLE;
448 I915_WRITE(reg, val);
449 POSTING_READ(reg);
450 return;
451 }
452
453 if (port != (val & VIDEO_DIP_PORT_MASK)) {
454 if (val & VIDEO_DIP_ENABLE) {
455 val &= ~VIDEO_DIP_ENABLE;
456 I915_WRITE(reg, val);
457 POSTING_READ(reg);
458 }
459 val &= ~VIDEO_DIP_PORT_MASK;
460 val |= port;
461 }
462
463 val |= VIDEO_DIP_ENABLE;
464 val &= ~VIDEO_DIP_ENABLE_VENDOR;
465
466 I915_WRITE(reg, val);
467 POSTING_READ(reg);
468
469 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
470 intel_hdmi_set_spd_infoframe(encoder);
471 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
472 }
473
474 static void ibx_set_infoframes(struct drm_encoder *encoder,
475 bool enable,
476 struct drm_display_mode *adjusted_mode)
477 {
478 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
479 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
480 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
481 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
482 u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
483 u32 val = I915_READ(reg);
484 u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
485
486 assert_hdmi_port_disabled(intel_hdmi);
487
488 /* See the big comment in g4x_set_infoframes() */
489 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
490
491 if (!enable) {
492 if (!(val & VIDEO_DIP_ENABLE))
493 return;
494 val &= ~VIDEO_DIP_ENABLE;
495 I915_WRITE(reg, val);
496 POSTING_READ(reg);
497 return;
498 }
499
500 if (port != (val & VIDEO_DIP_PORT_MASK)) {
501 if (val & VIDEO_DIP_ENABLE) {
502 val &= ~VIDEO_DIP_ENABLE;
503 I915_WRITE(reg, val);
504 POSTING_READ(reg);
505 }
506 val &= ~VIDEO_DIP_PORT_MASK;
507 val |= port;
508 }
509
510 val |= VIDEO_DIP_ENABLE;
511 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
512 VIDEO_DIP_ENABLE_GCP);
513
514 I915_WRITE(reg, val);
515 POSTING_READ(reg);
516
517 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
518 intel_hdmi_set_spd_infoframe(encoder);
519 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
520 }
521
522 static void cpt_set_infoframes(struct drm_encoder *encoder,
523 bool enable,
524 struct drm_display_mode *adjusted_mode)
525 {
526 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
527 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
528 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
529 u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
530 u32 val = I915_READ(reg);
531
532 assert_hdmi_port_disabled(intel_hdmi);
533
534 /* See the big comment in g4x_set_infoframes() */
535 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
536
537 if (!enable) {
538 if (!(val & VIDEO_DIP_ENABLE))
539 return;
540 val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI);
541 I915_WRITE(reg, val);
542 POSTING_READ(reg);
543 return;
544 }
545
546 /* Set both together, unset both together: see the spec. */
547 val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
548 val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
549 VIDEO_DIP_ENABLE_GCP);
550
551 I915_WRITE(reg, val);
552 POSTING_READ(reg);
553
554 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
555 intel_hdmi_set_spd_infoframe(encoder);
556 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
557 }
558
559 static void vlv_set_infoframes(struct drm_encoder *encoder,
560 bool enable,
561 struct drm_display_mode *adjusted_mode)
562 {
563 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
564 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
565 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
566 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
567 u32 reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
568 u32 val = I915_READ(reg);
569 u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
570
571 assert_hdmi_port_disabled(intel_hdmi);
572
573 /* See the big comment in g4x_set_infoframes() */
574 val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
575
576 if (!enable) {
577 if (!(val & VIDEO_DIP_ENABLE))
578 return;
579 val &= ~VIDEO_DIP_ENABLE;
580 I915_WRITE(reg, val);
581 POSTING_READ(reg);
582 return;
583 }
584
585 if (port != (val & VIDEO_DIP_PORT_MASK)) {
586 if (val & VIDEO_DIP_ENABLE) {
587 val &= ~VIDEO_DIP_ENABLE;
588 I915_WRITE(reg, val);
589 POSTING_READ(reg);
590 }
591 val &= ~VIDEO_DIP_PORT_MASK;
592 val |= port;
593 }
594
595 val |= VIDEO_DIP_ENABLE;
596 val &= ~(VIDEO_DIP_ENABLE_AVI | VIDEO_DIP_ENABLE_VENDOR |
597 VIDEO_DIP_ENABLE_GAMUT | VIDEO_DIP_ENABLE_GCP);
598
599 I915_WRITE(reg, val);
600 POSTING_READ(reg);
601
602 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
603 intel_hdmi_set_spd_infoframe(encoder);
604 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
605 }
606
607 static void hsw_set_infoframes(struct drm_encoder *encoder,
608 bool enable,
609 struct drm_display_mode *adjusted_mode)
610 {
611 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
612 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
613 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
614 u32 reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
615 u32 val = I915_READ(reg);
616
617 assert_hdmi_port_disabled(intel_hdmi);
618
619 if (!enable) {
620 I915_WRITE(reg, 0);
621 POSTING_READ(reg);
622 return;
623 }
624
625 val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_GCP_HSW |
626 VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW);
627
628 I915_WRITE(reg, val);
629 POSTING_READ(reg);
630
631 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
632 intel_hdmi_set_spd_infoframe(encoder);
633 intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode);
634 }
635
636 static void intel_hdmi_prepare(struct intel_encoder *encoder)
637 {
638 struct drm_device *dev = encoder->base.dev;
639 struct drm_i915_private *dev_priv = dev->dev_private;
640 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
641 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
642 struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode;
643 u32 hdmi_val;
644
645 hdmi_val = SDVO_ENCODING_HDMI;
646 if (!HAS_PCH_SPLIT(dev))
647 hdmi_val |= intel_hdmi->color_range;
648 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
649 hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
650 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
651 hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
652
653 if (crtc->config.pipe_bpp > 24)
654 hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
655 else
656 hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
657
658 if (crtc->config.has_hdmi_sink)
659 hdmi_val |= HDMI_MODE_SELECT_HDMI;
660
661 if (crtc->config.has_audio) {
662 WARN_ON(!crtc->config.has_hdmi_sink);
663 DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
664 pipe_name(crtc->pipe));
665 hdmi_val |= SDVO_AUDIO_ENABLE;
666 intel_write_eld(&encoder->base, adjusted_mode);
667 }
668
669 if (HAS_PCH_CPT(dev))
670 hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
671 else if (IS_CHERRYVIEW(dev))
672 hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
673 else
674 hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
675
676 I915_WRITE(intel_hdmi->hdmi_reg, hdmi_val);
677 POSTING_READ(intel_hdmi->hdmi_reg);
678 }
679
680 static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
681 enum pipe *pipe)
682 {
683 struct drm_device *dev = encoder->base.dev;
684 struct drm_i915_private *dev_priv = dev->dev_private;
685 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
686 enum intel_display_power_domain power_domain;
687 u32 tmp;
688
689 power_domain = intel_display_port_power_domain(encoder);
690 if (!intel_display_power_enabled(dev_priv, power_domain))
691 return false;
692
693 tmp = I915_READ(intel_hdmi->hdmi_reg);
694
695 if (!(tmp & SDVO_ENABLE))
696 return false;
697
698 if (HAS_PCH_CPT(dev))
699 *pipe = PORT_TO_PIPE_CPT(tmp);
700 else if (IS_CHERRYVIEW(dev))
701 *pipe = SDVO_PORT_TO_PIPE_CHV(tmp);
702 else
703 *pipe = PORT_TO_PIPE(tmp);
704
705 return true;
706 }
707
708 static void intel_hdmi_get_config(struct intel_encoder *encoder,
709 struct intel_crtc_config *pipe_config)
710 {
711 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
712 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
713 u32 tmp, flags = 0;
714 int dotclock;
715
716 tmp = I915_READ(intel_hdmi->hdmi_reg);
717
718 if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
719 flags |= DRM_MODE_FLAG_PHSYNC;
720 else
721 flags |= DRM_MODE_FLAG_NHSYNC;
722
723 if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
724 flags |= DRM_MODE_FLAG_PVSYNC;
725 else
726 flags |= DRM_MODE_FLAG_NVSYNC;
727
728 if (tmp & HDMI_MODE_SELECT_HDMI)
729 pipe_config->has_hdmi_sink = true;
730
731 if (tmp & HDMI_MODE_SELECT_HDMI)
732 pipe_config->has_audio = true;
733
734 pipe_config->adjusted_mode.flags |= flags;
735
736 if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
737 dotclock = pipe_config->port_clock * 2 / 3;
738 else
739 dotclock = pipe_config->port_clock;
740
741 if (HAS_PCH_SPLIT(dev_priv->dev))
742 ironlake_check_encoder_dotclock(pipe_config, dotclock);
743
744 pipe_config->adjusted_mode.crtc_clock = dotclock;
745 }
746
747 static void intel_enable_hdmi(struct intel_encoder *encoder)
748 {
749 struct drm_device *dev = encoder->base.dev;
750 struct drm_i915_private *dev_priv = dev->dev_private;
751 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
752 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
753 u32 temp;
754 u32 enable_bits = SDVO_ENABLE;
755
756 if (intel_crtc->config.has_audio)
757 enable_bits |= SDVO_AUDIO_ENABLE;
758
759 temp = I915_READ(intel_hdmi->hdmi_reg);
760
761 /* HW workaround for IBX, we need to move the port to transcoder A
762 * before disabling it, so restore the transcoder select bit here. */
763 if (HAS_PCH_IBX(dev))
764 enable_bits |= SDVO_PIPE_SEL(intel_crtc->pipe);
765
766 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
767 * we do this anyway which shows more stable in testing.
768 */
769 if (HAS_PCH_SPLIT(dev)) {
770 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
771 POSTING_READ(intel_hdmi->hdmi_reg);
772 }
773
774 temp |= enable_bits;
775
776 I915_WRITE(intel_hdmi->hdmi_reg, temp);
777 POSTING_READ(intel_hdmi->hdmi_reg);
778
779 /* HW workaround, need to write this twice for issue that may result
780 * in first write getting masked.
781 */
782 if (HAS_PCH_SPLIT(dev)) {
783 I915_WRITE(intel_hdmi->hdmi_reg, temp);
784 POSTING_READ(intel_hdmi->hdmi_reg);
785 }
786 }
787
788 static void vlv_enable_hdmi(struct intel_encoder *encoder)
789 {
790 }
791
792 static void intel_disable_hdmi(struct intel_encoder *encoder)
793 {
794 struct drm_device *dev = encoder->base.dev;
795 struct drm_i915_private *dev_priv = dev->dev_private;
796 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
797 u32 temp;
798 u32 enable_bits = SDVO_ENABLE | SDVO_AUDIO_ENABLE;
799
800 temp = I915_READ(intel_hdmi->hdmi_reg);
801
802 /* HW workaround for IBX, we need to move the port to transcoder A
803 * before disabling it. */
804 if (HAS_PCH_IBX(dev)) {
805 struct drm_crtc *crtc = encoder->base.crtc;
806 int pipe = crtc ? to_intel_crtc(crtc)->pipe : -1;
807
808 if (temp & SDVO_PIPE_B_SELECT) {
809 temp &= ~SDVO_PIPE_B_SELECT;
810 I915_WRITE(intel_hdmi->hdmi_reg, temp);
811 POSTING_READ(intel_hdmi->hdmi_reg);
812
813 /* Again we need to write this twice. */
814 I915_WRITE(intel_hdmi->hdmi_reg, temp);
815 POSTING_READ(intel_hdmi->hdmi_reg);
816
817 /* Transcoder selection bits only update
818 * effectively on vblank. */
819 if (crtc)
820 intel_wait_for_vblank(dev, pipe);
821 else
822 msleep(50);
823 }
824 }
825
826 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
827 * we do this anyway which shows more stable in testing.
828 */
829 if (HAS_PCH_SPLIT(dev)) {
830 I915_WRITE(intel_hdmi->hdmi_reg, temp & ~SDVO_ENABLE);
831 POSTING_READ(intel_hdmi->hdmi_reg);
832 }
833
834 temp &= ~enable_bits;
835
836 I915_WRITE(intel_hdmi->hdmi_reg, temp);
837 POSTING_READ(intel_hdmi->hdmi_reg);
838
839 /* HW workaround, need to write this twice for issue that may result
840 * in first write getting masked.
841 */
842 if (HAS_PCH_SPLIT(dev)) {
843 I915_WRITE(intel_hdmi->hdmi_reg, temp);
844 POSTING_READ(intel_hdmi->hdmi_reg);
845 }
846 }
847
848 static int hdmi_portclock_limit(struct intel_hdmi *hdmi, bool respect_dvi_limit)
849 {
850 struct drm_device *dev = intel_hdmi_to_dev(hdmi);
851
852 if ((respect_dvi_limit && !hdmi->has_hdmi_sink) || IS_G4X(dev))
853 return 165000;
854 else if (IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8)
855 return 300000;
856 else
857 return 225000;
858 }
859
860 static enum drm_mode_status
861 intel_hdmi_mode_valid(struct drm_connector *connector,
862 struct drm_display_mode *mode)
863 {
864 if (mode->clock > hdmi_portclock_limit(intel_attached_hdmi(connector),
865 true))
866 return MODE_CLOCK_HIGH;
867 if (mode->clock < 20000)
868 return MODE_CLOCK_LOW;
869
870 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
871 return MODE_NO_DBLESCAN;
872
873 return MODE_OK;
874 }
875
876 static bool hdmi_12bpc_possible(struct intel_crtc *crtc)
877 {
878 struct drm_device *dev = crtc->base.dev;
879 struct intel_encoder *encoder;
880 int count = 0, count_hdmi = 0;
881
882 if (!HAS_PCH_SPLIT(dev))
883 return false;
884
885 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
886 if (encoder->new_crtc != crtc)
887 continue;
888
889 count_hdmi += encoder->type == INTEL_OUTPUT_HDMI;
890 count++;
891 }
892
893 /*
894 * HDMI 12bpc affects the clocks, so it's only possible
895 * when not cloning with other encoder types.
896 */
897 return count_hdmi > 0 && count_hdmi == count;
898 }
899
900 bool intel_hdmi_compute_config(struct intel_encoder *encoder,
901 struct intel_crtc_config *pipe_config)
902 {
903 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
904 struct drm_device *dev = encoder->base.dev;
905 struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
906 int clock_12bpc = pipe_config->adjusted_mode.crtc_clock * 3 / 2;
907 int portclock_limit = hdmi_portclock_limit(intel_hdmi, false);
908 int desired_bpp;
909
910 pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
911
912 if (intel_hdmi->color_range_auto) {
913 /* See CEA-861-E - 5.1 Default Encoding Parameters */
914 if (pipe_config->has_hdmi_sink &&
915 drm_match_cea_mode(adjusted_mode) > 1)
916 intel_hdmi->color_range = HDMI_COLOR_RANGE_16_235;
917 else
918 intel_hdmi->color_range = 0;
919 }
920
921 if (intel_hdmi->color_range)
922 pipe_config->limited_color_range = true;
923
924 if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev))
925 pipe_config->has_pch_encoder = true;
926
927 if (pipe_config->has_hdmi_sink && intel_hdmi->has_audio)
928 pipe_config->has_audio = true;
929
930 /*
931 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
932 * through, clamp it down. Note that g4x/vlv don't support 12bpc hdmi
933 * outputs. We also need to check that the higher clock still fits
934 * within limits.
935 */
936 if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink &&
937 clock_12bpc <= portclock_limit &&
938 hdmi_12bpc_possible(encoder->new_crtc)) {
939 DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n");
940 desired_bpp = 12*3;
941
942 /* Need to adjust the port link by 1.5x for 12bpc. */
943 pipe_config->port_clock = clock_12bpc;
944 } else {
945 DRM_DEBUG_KMS("picking bpc to 8 for HDMI output\n");
946 desired_bpp = 8*3;
947 }
948
949 if (!pipe_config->bw_constrained) {
950 DRM_DEBUG_KMS("forcing pipe bpc to %i for HDMI\n", desired_bpp);
951 pipe_config->pipe_bpp = desired_bpp;
952 }
953
954 if (adjusted_mode->crtc_clock > portclock_limit) {
955 DRM_DEBUG_KMS("too high HDMI clock, rejecting mode\n");
956 return false;
957 }
958
959 return true;
960 }
961
962 static enum drm_connector_status
963 intel_hdmi_detect(struct drm_connector *connector, bool force)
964 {
965 struct drm_device *dev = connector->dev;
966 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
967 struct intel_digital_port *intel_dig_port =
968 hdmi_to_dig_port(intel_hdmi);
969 struct intel_encoder *intel_encoder = &intel_dig_port->base;
970 struct drm_i915_private *dev_priv = dev->dev_private;
971 struct edid *edid;
972 enum intel_display_power_domain power_domain;
973 enum drm_connector_status status = connector_status_disconnected;
974
975 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
976 connector->base.id, connector->name);
977
978 power_domain = intel_display_port_power_domain(intel_encoder);
979 intel_display_power_get(dev_priv, power_domain);
980
981 intel_hdmi->has_hdmi_sink = false;
982 intel_hdmi->has_audio = false;
983 intel_hdmi->rgb_quant_range_selectable = false;
984 edid = drm_get_edid(connector,
985 intel_gmbus_get_adapter(dev_priv,
986 intel_hdmi->ddc_bus));
987
988 if (edid) {
989 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
990 status = connector_status_connected;
991 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
992 intel_hdmi->has_hdmi_sink =
993 drm_detect_hdmi_monitor(edid);
994 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
995 intel_hdmi->rgb_quant_range_selectable =
996 drm_rgb_quant_range_selectable(edid);
997 }
998 kfree(edid);
999 }
1000
1001 if (status == connector_status_connected) {
1002 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
1003 intel_hdmi->has_audio =
1004 (intel_hdmi->force_audio == HDMI_AUDIO_ON);
1005 intel_encoder->type = INTEL_OUTPUT_HDMI;
1006 }
1007
1008 intel_display_power_put(dev_priv, power_domain);
1009
1010 return status;
1011 }
1012
1013 static int intel_hdmi_get_modes(struct drm_connector *connector)
1014 {
1015 struct intel_encoder *intel_encoder = intel_attached_encoder(connector);
1016 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&intel_encoder->base);
1017 struct drm_i915_private *dev_priv = connector->dev->dev_private;
1018 enum intel_display_power_domain power_domain;
1019 int ret;
1020
1021 /* We should parse the EDID data and find out if it's an HDMI sink so
1022 * we can send audio to it.
1023 */
1024
1025 power_domain = intel_display_port_power_domain(intel_encoder);
1026 intel_display_power_get(dev_priv, power_domain);
1027
1028 ret = intel_ddc_get_modes(connector,
1029 intel_gmbus_get_adapter(dev_priv,
1030 intel_hdmi->ddc_bus));
1031
1032 intel_display_power_put(dev_priv, power_domain);
1033
1034 return ret;
1035 }
1036
1037 static bool
1038 intel_hdmi_detect_audio(struct drm_connector *connector)
1039 {
1040 struct intel_encoder *intel_encoder = intel_attached_encoder(connector);
1041 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&intel_encoder->base);
1042 struct drm_i915_private *dev_priv = connector->dev->dev_private;
1043 enum intel_display_power_domain power_domain;
1044 struct edid *edid;
1045 bool has_audio = false;
1046
1047 power_domain = intel_display_port_power_domain(intel_encoder);
1048 intel_display_power_get(dev_priv, power_domain);
1049
1050 edid = drm_get_edid(connector,
1051 intel_gmbus_get_adapter(dev_priv,
1052 intel_hdmi->ddc_bus));
1053 if (edid) {
1054 if (edid->input & DRM_EDID_INPUT_DIGITAL)
1055 has_audio = drm_detect_monitor_audio(edid);
1056 kfree(edid);
1057 }
1058
1059 intel_display_power_put(dev_priv, power_domain);
1060
1061 return has_audio;
1062 }
1063
1064 static int
1065 intel_hdmi_set_property(struct drm_connector *connector,
1066 struct drm_property *property,
1067 uint64_t val)
1068 {
1069 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
1070 struct intel_digital_port *intel_dig_port =
1071 hdmi_to_dig_port(intel_hdmi);
1072 struct drm_i915_private *dev_priv = connector->dev->dev_private;
1073 int ret;
1074
1075 ret = drm_object_property_set_value(&connector->base, property, val);
1076 if (ret)
1077 return ret;
1078
1079 if (property == dev_priv->force_audio_property) {
1080 enum hdmi_force_audio i = val;
1081 bool has_audio;
1082
1083 if (i == intel_hdmi->force_audio)
1084 return 0;
1085
1086 intel_hdmi->force_audio = i;
1087
1088 if (i == HDMI_AUDIO_AUTO)
1089 has_audio = intel_hdmi_detect_audio(connector);
1090 else
1091 has_audio = (i == HDMI_AUDIO_ON);
1092
1093 if (i == HDMI_AUDIO_OFF_DVI)
1094 intel_hdmi->has_hdmi_sink = 0;
1095
1096 intel_hdmi->has_audio = has_audio;
1097 goto done;
1098 }
1099
1100 if (property == dev_priv->broadcast_rgb_property) {
1101 bool old_auto = intel_hdmi->color_range_auto;
1102 uint32_t old_range = intel_hdmi->color_range;
1103
1104 switch (val) {
1105 case INTEL_BROADCAST_RGB_AUTO:
1106 intel_hdmi->color_range_auto = true;
1107 break;
1108 case INTEL_BROADCAST_RGB_FULL:
1109 intel_hdmi->color_range_auto = false;
1110 intel_hdmi->color_range = 0;
1111 break;
1112 case INTEL_BROADCAST_RGB_LIMITED:
1113 intel_hdmi->color_range_auto = false;
1114 intel_hdmi->color_range = HDMI_COLOR_RANGE_16_235;
1115 break;
1116 default:
1117 return -EINVAL;
1118 }
1119
1120 if (old_auto == intel_hdmi->color_range_auto &&
1121 old_range == intel_hdmi->color_range)
1122 return 0;
1123
1124 goto done;
1125 }
1126
1127 return -EINVAL;
1128
1129 done:
1130 if (intel_dig_port->base.base.crtc)
1131 intel_crtc_restore_mode(intel_dig_port->base.base.crtc);
1132
1133 return 0;
1134 }
1135
1136 static void intel_hdmi_pre_enable(struct intel_encoder *encoder)
1137 {
1138 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
1139 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
1140 struct drm_display_mode *adjusted_mode =
1141 &intel_crtc->config.adjusted_mode;
1142
1143 intel_hdmi_prepare(encoder);
1144
1145 intel_hdmi->set_infoframes(&encoder->base,
1146 intel_crtc->config.has_hdmi_sink,
1147 adjusted_mode);
1148 }
1149
1150 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder)
1151 {
1152 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1153 struct intel_hdmi *intel_hdmi = &dport->hdmi;
1154 struct drm_device *dev = encoder->base.dev;
1155 struct drm_i915_private *dev_priv = dev->dev_private;
1156 struct intel_crtc *intel_crtc =
1157 to_intel_crtc(encoder->base.crtc);
1158 struct drm_display_mode *adjusted_mode =
1159 &intel_crtc->config.adjusted_mode;
1160 enum dpio_channel port = vlv_dport_to_channel(dport);
1161 int pipe = intel_crtc->pipe;
1162 u32 val;
1163
1164 /* Enable clock channels for this port */
1165 mutex_lock(&dev_priv->dpio_lock);
1166 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port));
1167 val = 0;
1168 if (pipe)
1169 val |= (1<<21);
1170 else
1171 val &= ~(1<<21);
1172 val |= 0x001000c4;
1173 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val);
1174
1175 /* HDMI 1.0V-2dB */
1176 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0);
1177 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), 0x2b245f5f);
1178 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), 0x5578b83a);
1179 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0c782040);
1180 vlv_dpio_write(dev_priv, pipe, VLV_TX3_DW4(port), 0x2b247878);
1181 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000);
1182 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1183 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1184
1185 /* Program lane clock */
1186 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
1187 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
1188 mutex_unlock(&dev_priv->dpio_lock);
1189
1190 intel_hdmi->set_infoframes(&encoder->base,
1191 intel_crtc->config.has_hdmi_sink,
1192 adjusted_mode);
1193
1194 intel_enable_hdmi(encoder);
1195
1196 vlv_wait_port_ready(dev_priv, dport);
1197 }
1198
1199 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
1200 {
1201 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1202 struct drm_device *dev = encoder->base.dev;
1203 struct drm_i915_private *dev_priv = dev->dev_private;
1204 struct intel_crtc *intel_crtc =
1205 to_intel_crtc(encoder->base.crtc);
1206 enum dpio_channel port = vlv_dport_to_channel(dport);
1207 int pipe = intel_crtc->pipe;
1208
1209 intel_hdmi_prepare(encoder);
1210
1211 /* Program Tx lane resets to default */
1212 mutex_lock(&dev_priv->dpio_lock);
1213 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
1214 DPIO_PCS_TX_LANE2_RESET |
1215 DPIO_PCS_TX_LANE1_RESET);
1216 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port),
1217 DPIO_PCS_CLK_CRI_RXEB_EIOS_EN |
1218 DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN |
1219 (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) |
1220 DPIO_PCS_CLK_SOFT_RESET);
1221
1222 /* Fix up inter-pair skew failure */
1223 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00);
1224 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
1225 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
1226
1227 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), 0x00002000);
1228 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
1229 mutex_unlock(&dev_priv->dpio_lock);
1230 }
1231
1232 static void vlv_hdmi_post_disable(struct intel_encoder *encoder)
1233 {
1234 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1235 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
1236 struct intel_crtc *intel_crtc =
1237 to_intel_crtc(encoder->base.crtc);
1238 enum dpio_channel port = vlv_dport_to_channel(dport);
1239 int pipe = intel_crtc->pipe;
1240
1241 /* Reset lanes to avoid HDMI flicker (VLV w/a) */
1242 mutex_lock(&dev_priv->dpio_lock);
1243 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), 0x00000000);
1244 vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), 0x00e00060);
1245 mutex_unlock(&dev_priv->dpio_lock);
1246 }
1247
1248 static void chv_hdmi_post_disable(struct intel_encoder *encoder)
1249 {
1250 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1251 struct drm_device *dev = encoder->base.dev;
1252 struct drm_i915_private *dev_priv = dev->dev_private;
1253 struct intel_crtc *intel_crtc =
1254 to_intel_crtc(encoder->base.crtc);
1255 enum dpio_channel ch = vlv_dport_to_channel(dport);
1256 enum pipe pipe = intel_crtc->pipe;
1257 u32 val;
1258
1259 mutex_lock(&dev_priv->dpio_lock);
1260
1261 /* Propagate soft reset to data lane reset */
1262 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
1263 val |= CHV_PCS_REQ_SOFTRESET_EN;
1264 vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
1265
1266 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
1267 val |= CHV_PCS_REQ_SOFTRESET_EN;
1268 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
1269
1270 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
1271 val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1272 vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
1273
1274 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
1275 val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1276 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
1277
1278 mutex_unlock(&dev_priv->dpio_lock);
1279 }
1280
1281 static void chv_hdmi_pre_enable(struct intel_encoder *encoder)
1282 {
1283 struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
1284 struct drm_device *dev = encoder->base.dev;
1285 struct drm_i915_private *dev_priv = dev->dev_private;
1286 struct intel_crtc *intel_crtc =
1287 to_intel_crtc(encoder->base.crtc);
1288 enum dpio_channel ch = vlv_dport_to_channel(dport);
1289 int pipe = intel_crtc->pipe;
1290 int data, i;
1291 u32 val;
1292
1293 mutex_lock(&dev_priv->dpio_lock);
1294
1295 /* Deassert soft data lane reset*/
1296 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
1297 val |= CHV_PCS_REQ_SOFTRESET_EN;
1298 vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
1299
1300 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
1301 val |= CHV_PCS_REQ_SOFTRESET_EN;
1302 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
1303
1304 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
1305 val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1306 vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
1307
1308 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
1309 val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
1310 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
1311
1312 /* Program Tx latency optimal setting */
1313 for (i = 0; i < 4; i++) {
1314 /* Set the latency optimal bit */
1315 data = (i == 1) ? 0x0 : 0x6;
1316 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i),
1317 data << DPIO_FRC_LATENCY_SHFIT);
1318
1319 /* Set the upar bit */
1320 data = (i == 1) ? 0x0 : 0x1;
1321 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i),
1322 data << DPIO_UPAR_SHIFT);
1323 }
1324
1325 /* Data lane stagger programming */
1326 /* FIXME: Fix up value only after power analysis */
1327
1328 /* Clear calc init */
1329 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1330 val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1331 vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1332
1333 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1334 val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
1335 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1336
1337 /* FIXME: Program the support xxx V-dB */
1338 /* Use 800mV-0dB */
1339 for (i = 0; i < 4; i++) {
1340 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i));
1341 val &= ~DPIO_SWING_DEEMPH9P5_MASK;
1342 val |= 128 << DPIO_SWING_DEEMPH9P5_SHIFT;
1343 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val);
1344 }
1345
1346 for (i = 0; i < 4; i++) {
1347 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
1348 val &= ~DPIO_SWING_MARGIN_MASK;
1349 val |= 102 << DPIO_SWING_MARGIN_SHIFT;
1350 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
1351 }
1352
1353 /* Disable unique transition scale */
1354 for (i = 0; i < 4; i++) {
1355 val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
1356 val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN;
1357 vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
1358 }
1359
1360 /* Additional steps for 1200mV-0dB */
1361 #if 0
1362 val = vlv_dpio_read(dev_priv, pipe, VLV_TX_DW3(ch));
1363 if (ch)
1364 val |= DPIO_TX_UNIQ_TRANS_SCALE_CH1;
1365 else
1366 val |= DPIO_TX_UNIQ_TRANS_SCALE_CH0;
1367 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(ch), val);
1368
1369 vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(ch),
1370 vlv_dpio_read(dev_priv, pipe, VLV_TX_DW2(ch)) |
1371 (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT));
1372 #endif
1373 /* Start swing calculation */
1374 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
1375 val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1376 vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
1377
1378 val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
1379 val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
1380 vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
1381
1382 /* LRC Bypass */
1383 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30);
1384 val |= DPIO_LRC_BYPASS;
1385 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val);
1386
1387 mutex_unlock(&dev_priv->dpio_lock);
1388
1389 intel_enable_hdmi(encoder);
1390
1391 vlv_wait_port_ready(dev_priv, dport);
1392 }
1393
1394 static void intel_hdmi_destroy(struct drm_connector *connector)
1395 {
1396 drm_connector_cleanup(connector);
1397 kfree(connector);
1398 }
1399
1400 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
1401 .dpms = intel_connector_dpms,
1402 .detect = intel_hdmi_detect,
1403 .fill_modes = drm_helper_probe_single_connector_modes,
1404 .set_property = intel_hdmi_set_property,
1405 .destroy = intel_hdmi_destroy,
1406 };
1407
1408 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
1409 .get_modes = intel_hdmi_get_modes,
1410 .mode_valid = intel_hdmi_mode_valid,
1411 .best_encoder = intel_best_encoder,
1412 };
1413
1414 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
1415 .destroy = intel_encoder_destroy,
1416 };
1417
1418 static void
1419 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
1420 {
1421 intel_attach_force_audio_property(connector);
1422 intel_attach_broadcast_rgb_property(connector);
1423 intel_hdmi->color_range_auto = true;
1424 }
1425
1426 void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
1427 struct intel_connector *intel_connector)
1428 {
1429 struct drm_connector *connector = &intel_connector->base;
1430 struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
1431 struct intel_encoder *intel_encoder = &intel_dig_port->base;
1432 struct drm_device *dev = intel_encoder->base.dev;
1433 struct drm_i915_private *dev_priv = dev->dev_private;
1434 enum port port = intel_dig_port->port;
1435
1436 drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
1437 DRM_MODE_CONNECTOR_HDMIA);
1438 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
1439
1440 connector->interlace_allowed = 1;
1441 connector->doublescan_allowed = 0;
1442 connector->stereo_allowed = 1;
1443
1444 switch (port) {
1445 case PORT_B:
1446 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
1447 intel_encoder->hpd_pin = HPD_PORT_B;
1448 break;
1449 case PORT_C:
1450 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
1451 intel_encoder->hpd_pin = HPD_PORT_C;
1452 break;
1453 case PORT_D:
1454 if (IS_CHERRYVIEW(dev))
1455 intel_hdmi->ddc_bus = GMBUS_PORT_DPD_CHV;
1456 else
1457 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
1458 intel_encoder->hpd_pin = HPD_PORT_D;
1459 break;
1460 case PORT_A:
1461 intel_encoder->hpd_pin = HPD_PORT_A;
1462 /* Internal port only for eDP. */
1463 default:
1464 BUG();
1465 }
1466
1467 if (IS_VALLEYVIEW(dev)) {
1468 intel_hdmi->write_infoframe = vlv_write_infoframe;
1469 intel_hdmi->set_infoframes = vlv_set_infoframes;
1470 } else if (!HAS_PCH_SPLIT(dev)) {
1471 intel_hdmi->write_infoframe = g4x_write_infoframe;
1472 intel_hdmi->set_infoframes = g4x_set_infoframes;
1473 } else if (HAS_DDI(dev)) {
1474 intel_hdmi->write_infoframe = hsw_write_infoframe;
1475 intel_hdmi->set_infoframes = hsw_set_infoframes;
1476 } else if (HAS_PCH_IBX(dev)) {
1477 intel_hdmi->write_infoframe = ibx_write_infoframe;
1478 intel_hdmi->set_infoframes = ibx_set_infoframes;
1479 } else {
1480 intel_hdmi->write_infoframe = cpt_write_infoframe;
1481 intel_hdmi->set_infoframes = cpt_set_infoframes;
1482 }
1483
1484 if (HAS_DDI(dev))
1485 intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
1486 else
1487 intel_connector->get_hw_state = intel_connector_get_hw_state;
1488 intel_connector->unregister = intel_connector_unregister;
1489
1490 intel_hdmi_add_properties(intel_hdmi, connector);
1491
1492 intel_connector_attach_encoder(intel_connector, intel_encoder);
1493 drm_connector_register(connector);
1494
1495 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
1496 * 0xd. Failure to do so will result in spurious interrupts being
1497 * generated on the port when a cable is not attached.
1498 */
1499 if (IS_G4X(dev) && !IS_GM45(dev)) {
1500 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
1501 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
1502 }
1503 }
1504
1505 void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port)
1506 {
1507 struct intel_digital_port *intel_dig_port;
1508 struct intel_encoder *intel_encoder;
1509 struct intel_connector *intel_connector;
1510
1511 intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
1512 if (!intel_dig_port)
1513 return;
1514
1515 intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL);
1516 if (!intel_connector) {
1517 kfree(intel_dig_port);
1518 return;
1519 }
1520
1521 intel_encoder = &intel_dig_port->base;
1522
1523 drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
1524 DRM_MODE_ENCODER_TMDS);
1525
1526 intel_encoder->compute_config = intel_hdmi_compute_config;
1527 intel_encoder->disable = intel_disable_hdmi;
1528 intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
1529 intel_encoder->get_config = intel_hdmi_get_config;
1530 if (IS_CHERRYVIEW(dev)) {
1531 intel_encoder->pre_enable = chv_hdmi_pre_enable;
1532 intel_encoder->enable = vlv_enable_hdmi;
1533 intel_encoder->post_disable = chv_hdmi_post_disable;
1534 } else if (IS_VALLEYVIEW(dev)) {
1535 intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
1536 intel_encoder->pre_enable = vlv_hdmi_pre_enable;
1537 intel_encoder->enable = vlv_enable_hdmi;
1538 intel_encoder->post_disable = vlv_hdmi_post_disable;
1539 } else {
1540 intel_encoder->pre_enable = intel_hdmi_pre_enable;
1541 intel_encoder->enable = intel_enable_hdmi;
1542 }
1543
1544 intel_encoder->type = INTEL_OUTPUT_HDMI;
1545 if (IS_CHERRYVIEW(dev)) {
1546 if (port == PORT_D)
1547 intel_encoder->crtc_mask = 1 << 2;
1548 else
1549 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
1550 } else {
1551 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
1552 }
1553 intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
1554 /*
1555 * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
1556 * to work on real hardware. And since g4x can send infoframes to
1557 * only one port anyway, nothing is lost by allowing it.
1558 */
1559 if (IS_G4X(dev))
1560 intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
1561
1562 intel_dig_port->port = port;
1563 intel_dig_port->hdmi.hdmi_reg = hdmi_reg;
1564 intel_dig_port->dp.output_reg = 0;
1565
1566 intel_hdmi_init_connector(intel_dig_port, intel_connector);
1567 }
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