summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/omapdrm/dss/venc.c
blob: 9701843ccf09d946c091156f0611811410c465d2 (plain)
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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2009 Nokia Corporation
 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
 *
 * VENC settings from TI's DSS driver
 */

#define DSS_SUBSYS_NAME "VENC"

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/component.h>
#include <linux/sys_soc.h>

#include <drm/drm_bridge.h>

#include "omapdss.h"
#include "dss.h"

/* Venc registers */
#define VENC_REV_ID				0x00
#define VENC_STATUS				0x04
#define VENC_F_CONTROL				0x08
#define VENC_VIDOUT_CTRL			0x10
#define VENC_SYNC_CTRL				0x14
#define VENC_LLEN				0x1C
#define VENC_FLENS				0x20
#define VENC_HFLTR_CTRL				0x24
#define VENC_CC_CARR_WSS_CARR			0x28
#define VENC_C_PHASE				0x2C
#define VENC_GAIN_U				0x30
#define VENC_GAIN_V				0x34
#define VENC_GAIN_Y				0x38
#define VENC_BLACK_LEVEL			0x3C
#define VENC_BLANK_LEVEL			0x40
#define VENC_X_COLOR				0x44
#define VENC_M_CONTROL				0x48
#define VENC_BSTAMP_WSS_DATA			0x4C
#define VENC_S_CARR				0x50
#define VENC_LINE21				0x54
#define VENC_LN_SEL				0x58
#define VENC_L21__WC_CTL			0x5C
#define VENC_HTRIGGER_VTRIGGER			0x60
#define VENC_SAVID__EAVID			0x64
#define VENC_FLEN__FAL				0x68
#define VENC_LAL__PHASE_RESET			0x6C
#define VENC_HS_INT_START_STOP_X		0x70
#define VENC_HS_EXT_START_STOP_X		0x74
#define VENC_VS_INT_START_X			0x78
#define VENC_VS_INT_STOP_X__VS_INT_START_Y	0x7C
#define VENC_VS_INT_STOP_Y__VS_EXT_START_X	0x80
#define VENC_VS_EXT_STOP_X__VS_EXT_START_Y	0x84
#define VENC_VS_EXT_STOP_Y			0x88
#define VENC_AVID_START_STOP_X			0x90
#define VENC_AVID_START_STOP_Y			0x94
#define VENC_FID_INT_START_X__FID_INT_START_Y	0xA0
#define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X	0xA4
#define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y	0xA8
#define VENC_TVDETGP_INT_START_STOP_X		0xB0
#define VENC_TVDETGP_INT_START_STOP_Y		0xB4
#define VENC_GEN_CTRL				0xB8
#define VENC_OUTPUT_CONTROL			0xC4
#define VENC_OUTPUT_TEST			0xC8
#define VENC_DAC_B__DAC_C			0xC8

struct venc_config {
	u32 f_control;
	u32 vidout_ctrl;
	u32 sync_ctrl;
	u32 llen;
	u32 flens;
	u32 hfltr_ctrl;
	u32 cc_carr_wss_carr;
	u32 c_phase;
	u32 gain_u;
	u32 gain_v;
	u32 gain_y;
	u32 black_level;
	u32 blank_level;
	u32 x_color;
	u32 m_control;
	u32 bstamp_wss_data;
	u32 s_carr;
	u32 line21;
	u32 ln_sel;
	u32 l21__wc_ctl;
	u32 htrigger_vtrigger;
	u32 savid__eavid;
	u32 flen__fal;
	u32 lal__phase_reset;
	u32 hs_int_start_stop_x;
	u32 hs_ext_start_stop_x;
	u32 vs_int_start_x;
	u32 vs_int_stop_x__vs_int_start_y;
	u32 vs_int_stop_y__vs_ext_start_x;
	u32 vs_ext_stop_x__vs_ext_start_y;
	u32 vs_ext_stop_y;
	u32 avid_start_stop_x;
	u32 avid_start_stop_y;
	u32 fid_int_start_x__fid_int_start_y;
	u32 fid_int_offset_y__fid_ext_start_x;
	u32 fid_ext_start_y__fid_ext_offset_y;
	u32 tvdetgp_int_start_stop_x;
	u32 tvdetgp_int_start_stop_y;
	u32 gen_ctrl;
};

/* from TRM */
static const struct venc_config venc_config_pal_trm = {
	.f_control				= 0,
	.vidout_ctrl				= 1,
	.sync_ctrl				= 0x40,
	.llen					= 0x35F, /* 863 */
	.flens					= 0x270, /* 624 */
	.hfltr_ctrl				= 0,
	.cc_carr_wss_carr			= 0x2F7225ED,
	.c_phase				= 0,
	.gain_u					= 0x111,
	.gain_v					= 0x181,
	.gain_y					= 0x140,
	.black_level				= 0x3B,
	.blank_level				= 0x3B,
	.x_color				= 0x7,
	.m_control				= 0x2,
	.bstamp_wss_data			= 0x3F,
	.s_carr					= 0x2A098ACB,
	.line21					= 0,
	.ln_sel					= 0x01290015,
	.l21__wc_ctl				= 0x0000F603,
	.htrigger_vtrigger			= 0,

	.savid__eavid				= 0x06A70108,
	.flen__fal				= 0x00180270,
	.lal__phase_reset			= 0x00040135,
	.hs_int_start_stop_x			= 0x00880358,
	.hs_ext_start_stop_x			= 0x000F035F,
	.vs_int_start_x				= 0x01A70000,
	.vs_int_stop_x__vs_int_start_y		= 0x000001A7,
	.vs_int_stop_y__vs_ext_start_x		= 0x01AF0000,
	.vs_ext_stop_x__vs_ext_start_y		= 0x000101AF,
	.vs_ext_stop_y				= 0x00000025,
	.avid_start_stop_x			= 0x03530083,
	.avid_start_stop_y			= 0x026C002E,
	.fid_int_start_x__fid_int_start_y	= 0x0001008A,
	.fid_int_offset_y__fid_ext_start_x	= 0x002E0138,
	.fid_ext_start_y__fid_ext_offset_y	= 0x01380001,

	.tvdetgp_int_start_stop_x		= 0x00140001,
	.tvdetgp_int_start_stop_y		= 0x00010001,
	.gen_ctrl				= 0x00FF0000,
};

/* from TRM */
static const struct venc_config venc_config_ntsc_trm = {
	.f_control				= 0,
	.vidout_ctrl				= 1,
	.sync_ctrl				= 0x8040,
	.llen					= 0x359,
	.flens					= 0x20C,
	.hfltr_ctrl				= 0,
	.cc_carr_wss_carr			= 0x043F2631,
	.c_phase				= 0,
	.gain_u					= 0x102,
	.gain_v					= 0x16C,
	.gain_y					= 0x12F,
	.black_level				= 0x43,
	.blank_level				= 0x38,
	.x_color				= 0x7,
	.m_control				= 0x1,
	.bstamp_wss_data			= 0x38,
	.s_carr					= 0x21F07C1F,
	.line21					= 0,
	.ln_sel					= 0x01310011,
	.l21__wc_ctl				= 0x0000F003,
	.htrigger_vtrigger			= 0,

	.savid__eavid				= 0x069300F4,
	.flen__fal				= 0x0016020C,
	.lal__phase_reset			= 0x00060107,
	.hs_int_start_stop_x			= 0x008E0350,
	.hs_ext_start_stop_x			= 0x000F0359,
	.vs_int_start_x				= 0x01A00000,
	.vs_int_stop_x__vs_int_start_y		= 0x020701A0,
	.vs_int_stop_y__vs_ext_start_x		= 0x01AC0024,
	.vs_ext_stop_x__vs_ext_start_y		= 0x020D01AC,
	.vs_ext_stop_y				= 0x00000006,
	.avid_start_stop_x			= 0x03480078,
	.avid_start_stop_y			= 0x02060024,
	.fid_int_start_x__fid_int_start_y	= 0x0001008A,
	.fid_int_offset_y__fid_ext_start_x	= 0x01AC0106,
	.fid_ext_start_y__fid_ext_offset_y	= 0x01060006,

	.tvdetgp_int_start_stop_x		= 0x00140001,
	.tvdetgp_int_start_stop_y		= 0x00010001,
	.gen_ctrl				= 0x00F90000,
};

enum venc_videomode {
	VENC_MODE_UNKNOWN,
	VENC_MODE_PAL,
	VENC_MODE_NTSC,
};

static const struct drm_display_mode omap_dss_pal_mode = {
	.hdisplay	= 720,
	.hsync_start	= 732,
	.hsync_end	= 796,
	.htotal		= 864,
	.vdisplay	= 574,
	.vsync_start	= 579,
	.vsync_end	= 584,
	.vtotal		= 625,
	.clock		= 13500,

	.flags		= DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_NHSYNC |
			  DRM_MODE_FLAG_NVSYNC,
};

static const struct drm_display_mode omap_dss_ntsc_mode = {
	.hdisplay	= 720,
	.hsync_start	= 736,
	.hsync_end	= 800,
	.htotal		= 858,
	.vdisplay	= 482,
	.vsync_start	= 488,
	.vsync_end	= 494,
	.vtotal		= 525,
	.clock		= 13500,

	.flags		= DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_NHSYNC |
			  DRM_MODE_FLAG_NVSYNC,
};

struct venc_device {
	struct platform_device *pdev;
	void __iomem *base;
	struct regulator *vdda_dac_reg;
	struct dss_device *dss;

	struct dss_debugfs_entry *debugfs;

	struct clk	*tv_dac_clk;

	const struct venc_config *config;
	enum omap_dss_venc_type type;
	bool invert_polarity;
	bool requires_tv_dac_clk;

	struct omap_dss_device output;
	struct drm_bridge bridge;
};

#define drm_bridge_to_venc(b) container_of(b, struct venc_device, bridge)

static inline void venc_write_reg(struct venc_device *venc, int idx, u32 val)
{
	__raw_writel(val, venc->base + idx);
}

static inline u32 venc_read_reg(struct venc_device *venc, int idx)
{
	u32 l = __raw_readl(venc->base + idx);
	return l;
}

static void venc_write_config(struct venc_device *venc,
			      const struct venc_config *config)
{
	DSSDBG("write venc conf\n");

	venc_write_reg(venc, VENC_LLEN, config->llen);
	venc_write_reg(venc, VENC_FLENS, config->flens);
	venc_write_reg(venc, VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
	venc_write_reg(venc, VENC_C_PHASE, config->c_phase);
	venc_write_reg(venc, VENC_GAIN_U, config->gain_u);
	venc_write_reg(venc, VENC_GAIN_V, config->gain_v);
	venc_write_reg(venc, VENC_GAIN_Y, config->gain_y);
	venc_write_reg(venc, VENC_BLACK_LEVEL, config->black_level);
	venc_write_reg(venc, VENC_BLANK_LEVEL, config->blank_level);
	venc_write_reg(venc, VENC_M_CONTROL, config->m_control);
	venc_write_reg(venc, VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data);
	venc_write_reg(venc, VENC_S_CARR, config->s_carr);
	venc_write_reg(venc, VENC_L21__WC_CTL, config->l21__wc_ctl);
	venc_write_reg(venc, VENC_SAVID__EAVID, config->savid__eavid);
	venc_write_reg(venc, VENC_FLEN__FAL, config->flen__fal);
	venc_write_reg(venc, VENC_LAL__PHASE_RESET, config->lal__phase_reset);
	venc_write_reg(venc, VENC_HS_INT_START_STOP_X,
		       config->hs_int_start_stop_x);
	venc_write_reg(venc, VENC_HS_EXT_START_STOP_X,
		       config->hs_ext_start_stop_x);
	venc_write_reg(venc, VENC_VS_INT_START_X, config->vs_int_start_x);
	venc_write_reg(venc, VENC_VS_INT_STOP_X__VS_INT_START_Y,
		       config->vs_int_stop_x__vs_int_start_y);
	venc_write_reg(venc, VENC_VS_INT_STOP_Y__VS_EXT_START_X,
		       config->vs_int_stop_y__vs_ext_start_x);
	venc_write_reg(venc, VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
		       config->vs_ext_stop_x__vs_ext_start_y);
	venc_write_reg(venc, VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
	venc_write_reg(venc, VENC_AVID_START_STOP_X, config->avid_start_stop_x);
	venc_write_reg(venc, VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
	venc_write_reg(venc, VENC_FID_INT_START_X__FID_INT_START_Y,
		       config->fid_int_start_x__fid_int_start_y);
	venc_write_reg(venc, VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
		       config->fid_int_offset_y__fid_ext_start_x);
	venc_write_reg(venc, VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
		       config->fid_ext_start_y__fid_ext_offset_y);

	venc_write_reg(venc, VENC_DAC_B__DAC_C,
		       venc_read_reg(venc, VENC_DAC_B__DAC_C));
	venc_write_reg(venc, VENC_VIDOUT_CTRL, config->vidout_ctrl);
	venc_write_reg(venc, VENC_HFLTR_CTRL, config->hfltr_ctrl);
	venc_write_reg(venc, VENC_X_COLOR, config->x_color);
	venc_write_reg(venc, VENC_LINE21, config->line21);
	venc_write_reg(venc, VENC_LN_SEL, config->ln_sel);
	venc_write_reg(venc, VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
	venc_write_reg(venc, VENC_TVDETGP_INT_START_STOP_X,
		       config->tvdetgp_int_start_stop_x);
	venc_write_reg(venc, VENC_TVDETGP_INT_START_STOP_Y,
		       config->tvdetgp_int_start_stop_y);
	venc_write_reg(venc, VENC_GEN_CTRL, config->gen_ctrl);
	venc_write_reg(venc, VENC_F_CONTROL, config->f_control);
	venc_write_reg(venc, VENC_SYNC_CTRL, config->sync_ctrl);
}

static void venc_reset(struct venc_device *venc)
{
	int t = 1000;

	venc_write_reg(venc, VENC_F_CONTROL, 1<<8);
	while (venc_read_reg(venc, VENC_F_CONTROL) & (1<<8)) {
		if (--t == 0) {
			DSSERR("Failed to reset venc\n");
			return;
		}
	}

#ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
	/* the magical sleep that makes things work */
	/* XXX more info? What bug this circumvents? */
	msleep(20);
#endif
}

static int venc_runtime_get(struct venc_device *venc)
{
	int r;

	DSSDBG("venc_runtime_get\n");

	r = pm_runtime_get_sync(&venc->pdev->dev);
	WARN_ON(r < 0);
	return r < 0 ? r : 0;
}

static void venc_runtime_put(struct venc_device *venc)
{
	int r;

	DSSDBG("venc_runtime_put\n");

	r = pm_runtime_put_sync(&venc->pdev->dev);
	WARN_ON(r < 0 && r != -ENOSYS);
}

static int venc_power_on(struct venc_device *venc)
{
	u32 l;
	int r;

	r = venc_runtime_get(venc);
	if (r)
		goto err0;

	venc_reset(venc);
	venc_write_config(venc, venc->config);

	dss_set_venc_output(venc->dss, venc->type);
	dss_set_dac_pwrdn_bgz(venc->dss, 1);

	l = 0;

	if (venc->type == OMAP_DSS_VENC_TYPE_COMPOSITE)
		l |= 1 << 1;
	else /* S-Video */
		l |= (1 << 0) | (1 << 2);

	if (venc->invert_polarity == false)
		l |= 1 << 3;

	venc_write_reg(venc, VENC_OUTPUT_CONTROL, l);

	r = regulator_enable(venc->vdda_dac_reg);
	if (r)
		goto err1;

	r = dss_mgr_enable(&venc->output);
	if (r)
		goto err2;

	return 0;

err2:
	regulator_disable(venc->vdda_dac_reg);
err1:
	venc_write_reg(venc, VENC_OUTPUT_CONTROL, 0);
	dss_set_dac_pwrdn_bgz(venc->dss, 0);

	venc_runtime_put(venc);
err0:
	return r;
}

static void venc_power_off(struct venc_device *venc)
{
	venc_write_reg(venc, VENC_OUTPUT_CONTROL, 0);
	dss_set_dac_pwrdn_bgz(venc->dss, 0);

	dss_mgr_disable(&venc->output);

	regulator_disable(venc->vdda_dac_reg);

	venc_runtime_put(venc);
}

static enum venc_videomode venc_get_videomode(const struct drm_display_mode *mode)
{
	if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
		return VENC_MODE_UNKNOWN;

	if (mode->clock == omap_dss_pal_mode.clock &&
	    mode->hdisplay == omap_dss_pal_mode.hdisplay &&
	    mode->vdisplay == omap_dss_pal_mode.vdisplay)
		return VENC_MODE_PAL;

	if (mode->clock == omap_dss_ntsc_mode.clock &&
	    mode->hdisplay == omap_dss_ntsc_mode.hdisplay &&
	    mode->vdisplay == omap_dss_ntsc_mode.vdisplay)
		return VENC_MODE_NTSC;

	return VENC_MODE_UNKNOWN;
}

static int venc_dump_regs(struct seq_file *s, void *p)
{
	struct venc_device *venc = s->private;

#define DUMPREG(venc, r) \
	seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(venc, r))

	if (venc_runtime_get(venc))
		return 0;

	DUMPREG(venc, VENC_F_CONTROL);
	DUMPREG(venc, VENC_VIDOUT_CTRL);
	DUMPREG(venc, VENC_SYNC_CTRL);
	DUMPREG(venc, VENC_LLEN);
	DUMPREG(venc, VENC_FLENS);
	DUMPREG(venc, VENC_HFLTR_CTRL);
	DUMPREG(venc, VENC_CC_CARR_WSS_CARR);
	DUMPREG(venc, VENC_C_PHASE);
	DUMPREG(venc, VENC_GAIN_U);
	DUMPREG(venc, VENC_GAIN_V);
	DUMPREG(venc, VENC_GAIN_Y);
	DUMPREG(venc, VENC_BLACK_LEVEL);
	DUMPREG(venc, VENC_BLANK_LEVEL);
	DUMPREG(venc, VENC_X_COLOR);
	DUMPREG(venc, VENC_M_CONTROL);
	DUMPREG(venc, VENC_BSTAMP_WSS_DATA);
	DUMPREG(venc, VENC_S_CARR);
	DUMPREG(venc, VENC_LINE21);
	DUMPREG(venc, VENC_LN_SEL);
	DUMPREG(venc, VENC_L21__WC_CTL);
	DUMPREG(venc, VENC_HTRIGGER_VTRIGGER);
	DUMPREG(venc, VENC_SAVID__EAVID);
	DUMPREG(venc, VENC_FLEN__FAL);
	DUMPREG(venc, VENC_LAL__PHASE_RESET);
	DUMPREG(venc, VENC_HS_INT_START_STOP_X);
	DUMPREG(venc, VENC_HS_EXT_START_STOP_X);
	DUMPREG(venc, VENC_VS_INT_START_X);
	DUMPREG(venc, VENC_VS_INT_STOP_X__VS_INT_START_Y);
	DUMPREG(venc, VENC_VS_INT_STOP_Y__VS_EXT_START_X);
	DUMPREG(venc, VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
	DUMPREG(venc, VENC_VS_EXT_STOP_Y);
	DUMPREG(venc, VENC_AVID_START_STOP_X);
	DUMPREG(venc, VENC_AVID_START_STOP_Y);
	DUMPREG(venc, VENC_FID_INT_START_X__FID_INT_START_Y);
	DUMPREG(venc, VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
	DUMPREG(venc, VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
	DUMPREG(venc, VENC_TVDETGP_INT_START_STOP_X);
	DUMPREG(venc, VENC_TVDETGP_INT_START_STOP_Y);
	DUMPREG(venc, VENC_GEN_CTRL);
	DUMPREG(venc, VENC_OUTPUT_CONTROL);
	DUMPREG(venc, VENC_OUTPUT_TEST);

	venc_runtime_put(venc);

#undef DUMPREG
	return 0;
}

static int venc_get_clocks(struct venc_device *venc)
{
	struct clk *clk;

	if (venc->requires_tv_dac_clk) {
		clk = devm_clk_get(&venc->pdev->dev, "tv_dac_clk");
		if (IS_ERR(clk)) {
			DSSERR("can't get tv_dac_clk\n");
			return PTR_ERR(clk);
		}
	} else {
		clk = NULL;
	}

	venc->tv_dac_clk = clk;

	return 0;
}

/* -----------------------------------------------------------------------------
 * DRM Bridge Operations
 */

static int venc_bridge_attach(struct drm_bridge *bridge,
			      enum drm_bridge_attach_flags flags)
{
	struct venc_device *venc = drm_bridge_to_venc(bridge);

	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
		return -EINVAL;

	return drm_bridge_attach(bridge->encoder, venc->output.next_bridge,
				 bridge, flags);
}

static enum drm_mode_status
venc_bridge_mode_valid(struct drm_bridge *bridge,
		       const struct drm_display_mode *mode)
{
	switch (venc_get_videomode(mode)) {
	case VENC_MODE_PAL:
	case VENC_MODE_NTSC:
		return MODE_OK;

	default:
		return MODE_BAD;
	}
}

static bool venc_bridge_mode_fixup(struct drm_bridge *bridge,
				   const struct drm_display_mode *mode,
				   struct drm_display_mode *adjusted_mode)
{
	const struct drm_display_mode *venc_mode;

	switch (venc_get_videomode(adjusted_mode)) {
	case VENC_MODE_PAL:
		venc_mode = &omap_dss_pal_mode;
		break;

	case VENC_MODE_NTSC:
		venc_mode = &omap_dss_ntsc_mode;
		break;

	default:
		return false;
	}

	drm_mode_copy(adjusted_mode, venc_mode);
	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
	drm_mode_set_name(adjusted_mode);

	return true;
}

static void venc_bridge_mode_set(struct drm_bridge *bridge,
				 const struct drm_display_mode *mode,
				 const struct drm_display_mode *adjusted_mode)
{
	struct venc_device *venc = drm_bridge_to_venc(bridge);
	enum venc_videomode venc_mode = venc_get_videomode(adjusted_mode);

	switch (venc_mode) {
	default:
		WARN_ON_ONCE(1);
		/* Fall-through */
	case VENC_MODE_PAL:
		venc->config = &venc_config_pal_trm;
		break;

	case VENC_MODE_NTSC:
		venc->config = &venc_config_ntsc_trm;
		break;
	}

	dispc_set_tv_pclk(venc->dss->dispc, 13500000);
}

static void venc_bridge_enable(struct drm_bridge *bridge)
{
	struct venc_device *venc = drm_bridge_to_venc(bridge);

	venc_power_on(venc);
}

static void venc_bridge_disable(struct drm_bridge *bridge)
{
	struct venc_device *venc = drm_bridge_to_venc(bridge);

	venc_power_off(venc);
}

static int venc_bridge_get_modes(struct drm_bridge *bridge,
				 struct drm_connector *connector)
{
	static const struct drm_display_mode *modes[] = {
		&omap_dss_pal_mode,
		&omap_dss_ntsc_mode,
	};
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(modes); ++i) {
		struct drm_display_mode *mode;

		mode = drm_mode_duplicate(connector->dev, modes[i]);
		if (!mode)
			return i;

		mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
		drm_mode_set_name(mode);
		drm_mode_probed_add(connector, mode);
	}

	return ARRAY_SIZE(modes);
}

static const struct drm_bridge_funcs venc_bridge_funcs = {
	.attach = venc_bridge_attach,
	.mode_valid = venc_bridge_mode_valid,
	.mode_fixup = venc_bridge_mode_fixup,
	.mode_set = venc_bridge_mode_set,
	.enable = venc_bridge_enable,
	.disable = venc_bridge_disable,
	.get_modes = venc_bridge_get_modes,
};

static void venc_bridge_init(struct venc_device *venc)
{
	venc->bridge.funcs = &venc_bridge_funcs;
	venc->bridge.of_node = venc->pdev->dev.of_node;
	venc->bridge.ops = DRM_BRIDGE_OP_MODES;
	venc->bridge.type = DRM_MODE_CONNECTOR_SVIDEO;
	venc->bridge.interlace_allowed = true;

	drm_bridge_add(&venc->bridge);
}

static void venc_bridge_cleanup(struct venc_device *venc)
{
	drm_bridge_remove(&venc->bridge);
}

/* -----------------------------------------------------------------------------
 * Component Bind & Unbind
 */

static int venc_bind(struct device *dev, struct device *master, void *data)
{
	struct dss_device *dss = dss_get_device(master);
	struct venc_device *venc = dev_get_drvdata(dev);
	u8 rev_id;
	int r;

	venc->dss = dss;

	r = venc_runtime_get(venc);
	if (r)
		return r;

	rev_id = (u8)(venc_read_reg(venc, VENC_REV_ID) & 0xff);
	dev_dbg(dev, "OMAP VENC rev %d\n", rev_id);

	venc_runtime_put(venc);

	venc->debugfs = dss_debugfs_create_file(dss, "venc", venc_dump_regs,
						venc);

	return 0;
}

static void venc_unbind(struct device *dev, struct device *master, void *data)
{
	struct venc_device *venc = dev_get_drvdata(dev);

	dss_debugfs_remove_file(venc->debugfs);
}

static const struct component_ops venc_component_ops = {
	.bind	= venc_bind,
	.unbind	= venc_unbind,
};

/* -----------------------------------------------------------------------------
 * Probe & Remove, Suspend & Resume
 */

static int venc_init_output(struct venc_device *venc)
{
	struct omap_dss_device *out = &venc->output;
	int r;

	venc_bridge_init(venc);

	out->dev = &venc->pdev->dev;
	out->id = OMAP_DSS_OUTPUT_VENC;
	out->type = OMAP_DISPLAY_TYPE_VENC;
	out->name = "venc.0";
	out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
	out->owner = THIS_MODULE;
	out->of_port = 0;
	out->ops_flags = OMAP_DSS_DEVICE_OP_MODES;

	r = omapdss_device_init_output(out, &venc->bridge);
	if (r < 0) {
		venc_bridge_cleanup(venc);
		return r;
	}

	omapdss_device_register(out);

	return 0;
}

static void venc_uninit_output(struct venc_device *venc)
{
	omapdss_device_unregister(&venc->output);
	omapdss_device_cleanup_output(&venc->output);

	venc_bridge_cleanup(venc);
}

static int venc_probe_of(struct venc_device *venc)
{
	struct device_node *node = venc->pdev->dev.of_node;
	struct device_node *ep;
	u32 channels;
	int r;

	ep = of_graph_get_endpoint_by_regs(node, 0, 0);
	if (!ep)
		return 0;

	venc->invert_polarity = of_property_read_bool(ep, "ti,invert-polarity");

	r = of_property_read_u32(ep, "ti,channels", &channels);
	if (r) {
		dev_err(&venc->pdev->dev,
			"failed to read property 'ti,channels': %d\n", r);
		goto err;
	}

	switch (channels) {
	case 1:
		venc->type = OMAP_DSS_VENC_TYPE_COMPOSITE;
		break;
	case 2:
		venc->type = OMAP_DSS_VENC_TYPE_SVIDEO;
		break;
	default:
		dev_err(&venc->pdev->dev, "bad channel propert '%d'\n",
			channels);
		r = -EINVAL;
		goto err;
	}

	of_node_put(ep);

	return 0;

err:
	of_node_put(ep);
	return r;
}

static const struct soc_device_attribute venc_soc_devices[] = {
	{ .machine = "OMAP3[45]*" },
	{ .machine = "AM35*" },
	{ /* sentinel */ }
};

static int venc_probe(struct platform_device *pdev)
{
	struct venc_device *venc;
	struct resource *venc_mem;
	int r;

	venc = kzalloc(sizeof(*venc), GFP_KERNEL);
	if (!venc)
		return -ENOMEM;

	venc->pdev = pdev;

	platform_set_drvdata(pdev, venc);

	/* The OMAP34xx, OMAP35xx and AM35xx VENC require the TV DAC clock. */
	if (soc_device_match(venc_soc_devices))
		venc->requires_tv_dac_clk = true;

	venc->config = &venc_config_pal_trm;

	venc_mem = platform_get_resource(venc->pdev, IORESOURCE_MEM, 0);
	venc->base = devm_ioremap_resource(&pdev->dev, venc_mem);
	if (IS_ERR(venc->base)) {
		r = PTR_ERR(venc->base);
		goto err_free;
	}

	venc->vdda_dac_reg = devm_regulator_get(&pdev->dev, "vdda");
	if (IS_ERR(venc->vdda_dac_reg)) {
		r = PTR_ERR(venc->vdda_dac_reg);
		if (r != -EPROBE_DEFER)
			DSSERR("can't get VDDA_DAC regulator\n");
		goto err_free;
	}

	r = venc_get_clocks(venc);
	if (r)
		goto err_free;

	r = venc_probe_of(venc);
	if (r)
		goto err_free;

	pm_runtime_enable(&pdev->dev);

	r = venc_init_output(venc);
	if (r)
		goto err_pm_disable;

	r = component_add(&pdev->dev, &venc_component_ops);
	if (r)
		goto err_uninit_output;

	return 0;

err_uninit_output:
	venc_uninit_output(venc);
err_pm_disable:
	pm_runtime_disable(&pdev->dev);
err_free:
	kfree(venc);
	return r;
}

static int venc_remove(struct platform_device *pdev)
{
	struct venc_device *venc = platform_get_drvdata(pdev);

	component_del(&pdev->dev, &venc_component_ops);

	venc_uninit_output(venc);

	pm_runtime_disable(&pdev->dev);

	kfree(venc);
	return 0;
}

static int venc_runtime_suspend(struct device *dev)
{
	struct venc_device *venc = dev_get_drvdata(dev);

	if (venc->tv_dac_clk)
		clk_disable_unprepare(venc->tv_dac_clk);

	return 0;
}

static int venc_runtime_resume(struct device *dev)
{
	struct venc_device *venc = dev_get_drvdata(dev);

	if (venc->tv_dac_clk)
		clk_prepare_enable(venc->tv_dac_clk);

	return 0;
}

static const struct dev_pm_ops venc_pm_ops = {
	.runtime_suspend = venc_runtime_suspend,
	.runtime_resume = venc_runtime_resume,
};

static const struct of_device_id venc_of_match[] = {
	{ .compatible = "ti,omap2-venc", },
	{ .compatible = "ti,omap3-venc", },
	{ .compatible = "ti,omap4-venc", },
	{},
};

struct platform_driver omap_venchw_driver = {
	.probe		= venc_probe,
	.remove		= venc_remove,
	.driver         = {
		.name   = "omapdss_venc",
		.pm	= &venc_pm_ops,
		.of_match_table = venc_of_match,
		.suppress_bind_attrs = true,
	},
};