intel_hdmi.c 19.8 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
/*
 * Copyright 2006 Dave Airlie <airlied@linux.ie>
 * Copyright © 2006-2009 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *	Eric Anholt <eric@anholt.net>
 *	Jesse Barnes <jesse.barnes@intel.com>
 */

#include <linux/i2c.h>
30
#include <linux/slab.h>
31
32
33
34
#include <linux/delay.h>
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
35
#include "drm_edid.h"
36
37
38
39
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"

40
struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
41
{
42
	return container_of(encoder, struct intel_hdmi, base.base);
43
44
}

45
46
47
48
49
50
static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
{
	return container_of(intel_attached_encoder(connector),
			    struct intel_hdmi, base);
}

51
void intel_dip_infoframe_csum(struct dip_infoframe *frame)
52
{
53
	uint8_t *data = (uint8_t *)frame;
54
55
56
	uint8_t sum = 0;
	unsigned i;

57
58
	frame->checksum = 0;
	frame->ecc = 0;
59

60
	for (i = 0; i < frame->len + DIP_HEADER_SIZE; i++)
61
62
		sum += data[i];

63
	frame->checksum = 0x100 - sum;
64
65
}

66
static u32 g4x_infoframe_index(struct dip_infoframe *frame)
67
{
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
	u32 flags = 0;

	switch (frame->type) {
	case DIP_TYPE_AVI:
		flags |= VIDEO_DIP_SELECT_AVI;
		break;
	case DIP_TYPE_SPD:
		flags |= VIDEO_DIP_SELECT_SPD;
		break;
	default:
		DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
		break;
	}

	return flags;
}

85
static u32 g4x_infoframe_enable(struct dip_infoframe *frame)
86
87
88
89
90
{
	u32 flags = 0;

	switch (frame->type) {
	case DIP_TYPE_AVI:
91
		flags |= VIDEO_DIP_ENABLE_AVI;
92
93
		break;
	case DIP_TYPE_SPD:
94
95
96
97
98
99
100
101
102
103
		flags |= VIDEO_DIP_ENABLE_SPD;
		break;
	default:
		DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
		break;
	}

	return flags;
}

104
105
static void g4x_write_infoframe(struct drm_encoder *encoder,
				struct dip_infoframe *frame)
106
107
{
	uint32_t *data = (uint32_t *)frame;
108
109
110
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
111
	u32 val = I915_READ(VIDEO_DIP_CTL);
112
	unsigned i, len = DIP_HEADER_SIZE + frame->len;
113
114
115


	/* XXX first guess at handling video port, is this corrent? */
116
	val &= ~VIDEO_DIP_PORT_MASK;
117
	if (intel_hdmi->sdvox_reg == SDVOB)
118
		val |= VIDEO_DIP_PORT_B;
119
	else if (intel_hdmi->sdvox_reg == SDVOC)
120
		val |= VIDEO_DIP_PORT_C;
121
122
123
	else
		return;

124
	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
125
	val |= g4x_infoframe_index(frame);
126

127
	val &= ~g4x_infoframe_enable(frame);
128
	val |= VIDEO_DIP_ENABLE;
129

130
	I915_WRITE(VIDEO_DIP_CTL, val);
131

132
	for (i = 0; i < len; i += 4) {
133
134
135
136
		I915_WRITE(VIDEO_DIP_DATA, *data);
		data++;
	}

137
	val |= g4x_infoframe_enable(frame);
138
	val &= ~VIDEO_DIP_FREQ_MASK;
139
	val |= VIDEO_DIP_FREQ_VSYNC;
140

141
	I915_WRITE(VIDEO_DIP_CTL, val);
142
143
}

144
145
146
147
148
149
150
151
static void ibx_write_infoframe(struct drm_encoder *encoder,
				struct dip_infoframe *frame)
{
	uint32_t *data = (uint32_t *)frame;
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_crtc *crtc = encoder->crtc;
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
152
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
153
154
155
156
	int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
	unsigned i, len = DIP_HEADER_SIZE + frame->len;
	u32 val = I915_READ(reg);

157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
	val &= ~VIDEO_DIP_PORT_MASK;
	switch (intel_hdmi->sdvox_reg) {
	case HDMIB:
		val |= VIDEO_DIP_PORT_B;
		break;
	case HDMIC:
		val |= VIDEO_DIP_PORT_C;
		break;
	case HDMID:
		val |= VIDEO_DIP_PORT_D;
		break;
	default:
		return;
	}

172
173
174
	intel_wait_for_vblank(dev, intel_crtc->pipe);

	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
175
	val |= g4x_infoframe_index(frame);
176

177
	val &= ~g4x_infoframe_enable(frame);
178
179
180
181
182
183
184
185
186
	val |= VIDEO_DIP_ENABLE;

	I915_WRITE(reg, val);

	for (i = 0; i < len; i += 4) {
		I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
		data++;
	}

187
	val |= g4x_infoframe_enable(frame);
188
	val &= ~VIDEO_DIP_FREQ_MASK;
189
	val |= VIDEO_DIP_FREQ_VSYNC;
190
191
192
193
194
195

	I915_WRITE(reg, val);
}

static void cpt_write_infoframe(struct drm_encoder *encoder,
				struct dip_infoframe *frame)
196
{
197
	uint32_t *data = (uint32_t *)frame;
198
199
200
201
202
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_crtc *crtc = encoder->crtc;
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
	int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
203
	unsigned i, len = DIP_HEADER_SIZE + frame->len;
204
	u32 val = I915_READ(reg);
205
206
207

	intel_wait_for_vblank(dev, intel_crtc->pipe);

208
	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
209
	val |= g4x_infoframe_index(frame);
210

211
212
213
214
215
	/* The DIP control register spec says that we need to update the AVI
	 * infoframe without clearing its enable bit */
	if (frame->type == DIP_TYPE_AVI)
		val |= VIDEO_DIP_ENABLE_AVI;
	else
216
		val &= ~g4x_infoframe_enable(frame);
217

218
219
220
	val |= VIDEO_DIP_ENABLE;

	I915_WRITE(reg, val);
221
222

	for (i = 0; i < len; i += 4) {
223
224
225
226
		I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
		data++;
	}

227
	val |= g4x_infoframe_enable(frame);
228
	val &= ~VIDEO_DIP_FREQ_MASK;
229
	val |= VIDEO_DIP_FREQ_VSYNC;
230

231
	I915_WRITE(reg, val);
232
}
233
234
235
236
237
238
239
240
241
242
243

static void vlv_write_infoframe(struct drm_encoder *encoder,
				     struct dip_infoframe *frame)
{
	uint32_t *data = (uint32_t *)frame;
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_crtc *crtc = encoder->crtc;
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
	int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
	unsigned i, len = DIP_HEADER_SIZE + frame->len;
244
	u32 val = I915_READ(reg);
245
246
247
248

	intel_wait_for_vblank(dev, intel_crtc->pipe);

	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
249
	val |= g4x_infoframe_index(frame);
250

251
	val &= ~g4x_infoframe_enable(frame);
252
	val |= VIDEO_DIP_ENABLE;
253

254
	I915_WRITE(reg, val);
255
256
257
258
259
260

	for (i = 0; i < len; i += 4) {
		I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
		data++;
	}

261
	val |= g4x_infoframe_enable(frame);
262
	val &= ~VIDEO_DIP_FREQ_MASK;
263
	val |= VIDEO_DIP_FREQ_VSYNC;
264

265
	I915_WRITE(reg, val);
266
267
}

268
269
270
271
272
273
274
275
276
277
278
279
static void hsw_write_infoframe(struct drm_encoder *encoder,
				     struct dip_infoframe *frame)
{
	/* Not implemented yet, so avoid doing anything at all.
	 * This is the placeholder for Paulo Zanoni's infoframe writing patch
	 */
	DRM_DEBUG_DRIVER("Attempting to write infoframe on Haswell, this is not implemented yet.\n");

	return;

}

280
281
282
283
284
285
286
287
288
289
290
291
static void intel_set_infoframe(struct drm_encoder *encoder,
				struct dip_infoframe *frame)
{
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);

	if (!intel_hdmi->has_hdmi_sink)
		return;

	intel_dip_infoframe_csum(frame);
	intel_hdmi->write_infoframe(encoder, frame);
}

292
void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
293
					 struct drm_display_mode *adjusted_mode)
294
295
296
297
298
299
300
{
	struct dip_infoframe avi_if = {
		.type = DIP_TYPE_AVI,
		.ver = DIP_VERSION_AVI,
		.len = DIP_LEN_AVI,
	};

301
302
303
	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
		avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;

304
	intel_set_infoframe(encoder, &avi_if);
305
306
}

307
void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
308
309
310
311
312
313
314
315
316
317
318
319
320
321
{
	struct dip_infoframe spd_if;

	memset(&spd_if, 0, sizeof(spd_if));
	spd_if.type = DIP_TYPE_SPD;
	spd_if.ver = DIP_VERSION_SPD;
	spd_if.len = DIP_LEN_SPD;
	strcpy(spd_if.body.spd.vn, "Intel");
	strcpy(spd_if.body.spd.pd, "Integrated gfx");
	spd_if.body.spd.sdi = DIP_SPD_PC;

	intel_set_infoframe(encoder, &spd_if);
}

322
323
324
325
326
327
328
329
static void intel_hdmi_mode_set(struct drm_encoder *encoder,
				struct drm_display_mode *mode,
				struct drm_display_mode *adjusted_mode)
{
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_crtc *crtc = encoder->crtc;
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
330
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
331
332
	u32 sdvox;

333
	sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
334
335
	if (!HAS_PCH_SPLIT(dev))
		sdvox |= intel_hdmi->color_range;
336
337
338
339
	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
		sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
		sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
340

341
342
343
344
345
	if (intel_crtc->bpp > 24)
		sdvox |= COLOR_FORMAT_12bpc;
	else
		sdvox |= COLOR_FORMAT_8bpc;

346
347
348
349
	/* Required on CPT */
	if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
		sdvox |= HDMI_MODE_SELECT;

350
	if (intel_hdmi->has_audio) {
351
352
		DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
				 pipe_name(intel_crtc->pipe));
353
		sdvox |= SDVO_AUDIO_ENABLE;
354
		sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
355
		intel_write_eld(encoder, adjusted_mode);
356
	}
357

358
359
360
361
	if (HAS_PCH_CPT(dev))
		sdvox |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
	else if (intel_crtc->pipe == 1)
		sdvox |= SDVO_PIPE_B_SELECT;
362

363
364
	I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
	POSTING_READ(intel_hdmi->sdvox_reg);
365

366
	intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
367
	intel_hdmi_set_spd_infoframe(encoder);
368
369
370
371
372
373
}

static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
{
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
374
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
375
	u32 temp;
376
377
378
379
	u32 enable_bits = SDVO_ENABLE;

	if (intel_hdmi->has_audio)
		enable_bits |= SDVO_AUDIO_ENABLE;
380

381
	temp = I915_READ(intel_hdmi->sdvox_reg);
382
383
384
385

	/* HW workaround, need to toggle enable bit off and on for 12bpc, but
	 * we do this anyway which shows more stable in testing.
	 */
386
	if (HAS_PCH_SPLIT(dev)) {
387
388
		I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
		POSTING_READ(intel_hdmi->sdvox_reg);
389
390
391
	}

	if (mode != DRM_MODE_DPMS_ON) {
392
		temp &= ~enable_bits;
393
	} else {
394
		temp |= enable_bits;
395
	}
396

397
398
	I915_WRITE(intel_hdmi->sdvox_reg, temp);
	POSTING_READ(intel_hdmi->sdvox_reg);
399
400
401
402

	/* HW workaround, need to write this twice for issue that may result
	 * in first write getting masked.
	 */
403
	if (HAS_PCH_SPLIT(dev)) {
404
405
		I915_WRITE(intel_hdmi->sdvox_reg, temp);
		POSTING_READ(intel_hdmi->sdvox_reg);
406
	}
407
408
409
410
411
412
413
414
}

static int intel_hdmi_mode_valid(struct drm_connector *connector,
				 struct drm_display_mode *mode)
{
	if (mode->clock > 165000)
		return MODE_CLOCK_HIGH;
	if (mode->clock < 20000)
415
		return MODE_CLOCK_LOW;
416
417
418
419
420
421
422
423
424
425
426
427
428
429

	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		return MODE_NO_DBLESCAN;

	return MODE_OK;
}

static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
				  struct drm_display_mode *mode,
				  struct drm_display_mode *adjusted_mode)
{
	return true;
}

430
static enum drm_connector_status
431
intel_hdmi_detect(struct drm_connector *connector, bool force)
432
{
433
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
434
435
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
	struct edid *edid;
436
	enum drm_connector_status status = connector_status_disconnected;
437

438
	intel_hdmi->has_hdmi_sink = false;
439
	intel_hdmi->has_audio = false;
440
	edid = drm_get_edid(connector,
441
442
			    intel_gmbus_get_adapter(dev_priv,
						    intel_hdmi->ddc_bus));
443

444
	if (edid) {
445
		if (edid->input & DRM_EDID_INPUT_DIGITAL) {
446
			status = connector_status_connected;
447
448
449
			if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
				intel_hdmi->has_hdmi_sink =
						drm_detect_hdmi_monitor(edid);
450
			intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
451
		}
452
		connector->display_info.raw_edid = NULL;
453
		kfree(edid);
454
	}
455

456
	if (status == connector_status_connected) {
457
458
459
		if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
			intel_hdmi->has_audio =
				(intel_hdmi->force_audio == HDMI_AUDIO_ON);
460
461
	}

462
	return status;
463
464
465
466
}

static int intel_hdmi_get_modes(struct drm_connector *connector)
{
467
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
468
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
469
470
471
472
473

	/* We should parse the EDID data and find out if it's an HDMI sink so
	 * we can send audio to it.
	 */

474
	return intel_ddc_get_modes(connector,
475
476
				   intel_gmbus_get_adapter(dev_priv,
							   intel_hdmi->ddc_bus));
477
478
}

479
480
481
482
483
484
485
486
487
static bool
intel_hdmi_detect_audio(struct drm_connector *connector)
{
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
	struct edid *edid;
	bool has_audio = false;

	edid = drm_get_edid(connector,
488
489
			    intel_gmbus_get_adapter(dev_priv,
						    intel_hdmi->ddc_bus));
490
491
492
493
494
495
496
497
498
499
500
	if (edid) {
		if (edid->input & DRM_EDID_INPUT_DIGITAL)
			has_audio = drm_detect_monitor_audio(edid);

		connector->display_info.raw_edid = NULL;
		kfree(edid);
	}

	return has_audio;
}

501
502
503
504
505
506
static int
intel_hdmi_set_property(struct drm_connector *connector,
		      struct drm_property *property,
		      uint64_t val)
{
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
507
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
508
509
510
511
512
513
	int ret;

	ret = drm_connector_property_set_value(connector, property, val);
	if (ret)
		return ret;

514
	if (property == dev_priv->force_audio_property) {
515
		enum hdmi_force_audio i = val;
516
517
518
		bool has_audio;

		if (i == intel_hdmi->force_audio)
519
520
			return 0;

521
		intel_hdmi->force_audio = i;
522

523
		if (i == HDMI_AUDIO_AUTO)
524
525
			has_audio = intel_hdmi_detect_audio(connector);
		else
526
			has_audio = (i == HDMI_AUDIO_ON);
527

528
529
		if (i == HDMI_AUDIO_OFF_DVI)
			intel_hdmi->has_hdmi_sink = 0;
530

531
		intel_hdmi->has_audio = has_audio;
532
533
534
		goto done;
	}

535
536
537
538
539
540
541
542
	if (property == dev_priv->broadcast_rgb_property) {
		if (val == !!intel_hdmi->color_range)
			return 0;

		intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0;
		goto done;
	}

543
544
545
546
547
548
549
550
551
552
553
554
555
	return -EINVAL;

done:
	if (intel_hdmi->base.base.crtc) {
		struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
		drm_crtc_helper_set_mode(crtc, &crtc->mode,
					 crtc->x, crtc->y,
					 crtc->fb);
	}

	return 0;
}

556
557
558
559
static void intel_hdmi_destroy(struct drm_connector *connector)
{
	drm_sysfs_connector_remove(connector);
	drm_connector_cleanup(connector);
560
	kfree(connector);
561
562
563
564
565
566
567
568
569
570
571
}

static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
	.dpms = intel_hdmi_dpms,
	.mode_fixup = intel_hdmi_mode_fixup,
	.prepare = intel_encoder_prepare,
	.mode_set = intel_hdmi_mode_set,
	.commit = intel_encoder_commit,
};

static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
572
	.dpms = drm_helper_connector_dpms,
573
574
	.detect = intel_hdmi_detect,
	.fill_modes = drm_helper_probe_single_connector_modes,
575
	.set_property = intel_hdmi_set_property,
576
577
578
579
580
581
	.destroy = intel_hdmi_destroy,
};

static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
	.get_modes = intel_hdmi_get_modes,
	.mode_valid = intel_hdmi_mode_valid,
582
	.best_encoder = intel_best_encoder,
583
584
585
};

static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
586
	.destroy = intel_encoder_destroy,
587
588
};

589
590
591
static void
intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
{
592
	intel_attach_force_audio_property(connector);
593
	intel_attach_broadcast_rgb_property(connector);
594
595
}

596
597
598
599
void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_connector *connector;
600
	struct intel_encoder *intel_encoder;
601
	struct intel_connector *intel_connector;
602
	struct intel_hdmi *intel_hdmi;
603
	int i;
604

605
606
	intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
	if (!intel_hdmi)
607
		return;
608
609
610

	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
	if (!intel_connector) {
611
		kfree(intel_hdmi);
612
613
614
		return;
	}

615
	intel_encoder = &intel_hdmi->base;
616
617
618
	drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
			 DRM_MODE_ENCODER_TMDS);

619
	connector = &intel_connector->base;
620
	drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
621
			   DRM_MODE_CONNECTOR_HDMIA);
622
623
	drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);

624
	intel_encoder->type = INTEL_OUTPUT_HDMI;
625

626
	connector->polled = DRM_CONNECTOR_POLL_HPD;
627
	connector->interlace_allowed = 1;
628
	connector->doublescan_allowed = 0;
629
	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
630
631

	/* Set up the DDC bus. */
632
	if (sdvox_reg == SDVOB) {
633
		intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
634
		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
635
		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
636
	} else if (sdvox_reg == SDVOC) {
637
		intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
638
		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
639
		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
640
	} else if (sdvox_reg == HDMIB) {
641
		intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
642
		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
643
		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
644
	} else if (sdvox_reg == HDMIC) {
645
		intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
646
		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
647
		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
648
	} else if (sdvox_reg == HDMID) {
649
		intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
650
		intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
651
		dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
	} else if (sdvox_reg == DDI_BUF_CTL(PORT_B)) {
		DRM_DEBUG_DRIVER("LPT: detected output on DDI B\n");
		intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
		intel_hdmi->ddi_port = PORT_B;
		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
	} else if (sdvox_reg == DDI_BUF_CTL(PORT_C)) {
		DRM_DEBUG_DRIVER("LPT: detected output on DDI C\n");
		intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
		intel_hdmi->ddi_port = PORT_C;
		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
	} else if (sdvox_reg == DDI_BUF_CTL(PORT_D)) {
		DRM_DEBUG_DRIVER("LPT: detected output on DDI D\n");
		intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
		intel_hdmi->ddi_port = PORT_D;
		dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
670
671
672
673
	} else {
		/* If we got an unknown sdvox_reg, things are pretty much broken
		 * in a way that we should let the kernel know about it */
		BUG();
674
	}
675

676
	intel_hdmi->sdvox_reg = sdvox_reg;
677

678
	if (!HAS_PCH_SPLIT(dev)) {
679
		intel_hdmi->write_infoframe = g4x_write_infoframe;
680
		I915_WRITE(VIDEO_DIP_CTL, 0);
681
682
683
684
	} else if (IS_VALLEYVIEW(dev)) {
		intel_hdmi->write_infoframe = vlv_write_infoframe;
		for_each_pipe(i)
			I915_WRITE(VLV_TVIDEO_DIP_CTL(i), 0);
685
686
687
688
689
690
691
	} else if (IS_HASWELL(dev)) {
		/* FIXME: Haswell has a new set of DIP frame registers, but we are
		 * just doing the minimal required for HDMI to work at this stage.
		 */
		intel_hdmi->write_infoframe = hsw_write_infoframe;
		for_each_pipe(i)
			I915_WRITE(HSW_TVIDEO_DIP_CTL(i), 0);
692
693
694
695
696
697
	} else if (HAS_PCH_IBX(dev)) {
		intel_hdmi->write_infoframe = ibx_write_infoframe;
		for_each_pipe(i)
			I915_WRITE(TVIDEO_DIP_CTL(i), 0);
	} else {
		intel_hdmi->write_infoframe = cpt_write_infoframe;
698
699
700
		for_each_pipe(i)
			I915_WRITE(TVIDEO_DIP_CTL(i), 0);
	}
701

702
	drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
703

704
705
	intel_hdmi_add_properties(intel_hdmi, connector);

706
	intel_connector_attach_encoder(intel_connector, intel_encoder);
707
708
709
710
711
712
713
714
715
716
717
	drm_sysfs_connector_add(connector);

	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
	 * 0xd.  Failure to do so will result in spurious interrupts being
	 * generated on the port when a cable is not attached.
	 */
	if (IS_G4X(dev) && !IS_GM45(dev)) {
		u32 temp = I915_READ(PEG_BAND_GAP_DATA);
		I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
	}
}