aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/dvb/frontends/au8522_decoder.c
blob: d63e1527dc88f52ea16f63ce6f272ef2eeffecce (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
/*
 * Auvitek AU8522 QAM/8VSB demodulator driver and video decoder
 *
 * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
 * Copyright (C) 2005-2008 Auvitek International, Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * As published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

/* Developer notes:
 *
 * VBI support is not yet working
 * Saturation and hue setting are not yet working
 * Enough is implemented here for CVBS and S-Video inputs, but the actual
 *  analog demodulator code isn't implemented (not needed for xc5000 since it
 *  has its own demodulator and outputs CVBS)
 *
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>
#include <media/v4l2-device.h>
#include "au8522.h"
#include "au8522_priv.h"

MODULE_AUTHOR("Devin Heitmueller");
MODULE_LICENSE("GPL");

static int au8522_analog_debug;


module_param_named(analog_debug, au8522_analog_debug, int, 0644);

MODULE_PARM_DESC(analog_debug,
		 "Analog debugging messages [0=Off (default) 1=On]");

struct au8522_register_config {
	u16 reg_name;
	u8 reg_val[8];
};


/* Video Decoder Filter Coefficients
   The values are as follows from left to right
   0="ATV RF" 1="ATV RF13" 2="CVBS" 3="S-Video" 4="PAL" 5=CVBS13" 6="SVideo13"
*/
struct au8522_register_config filter_coef[] = {
	{AU8522_FILTER_COEF_R410, {0x25, 0x00, 0x25, 0x25, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R411, {0x20, 0x00, 0x20, 0x20, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R412, {0x03, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R413, {0xe6, 0x00, 0xe6, 0xe6, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R414, {0x40, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R415, {0x1b, 0x00, 0x1b, 0x1b, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R416, {0xc0, 0x00, 0xc0, 0x04, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R417, {0x04, 0x00, 0x04, 0x04, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R418, {0x8c, 0x00, 0x8c, 0x8c, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R419, {0xa0, 0x40, 0xa0, 0xa0, 0x40, 0x40, 0x40} },
	{AU8522_FILTER_COEF_R41A, {0x21, 0x09, 0x21, 0x21, 0x09, 0x09, 0x09} },
	{AU8522_FILTER_COEF_R41B, {0x6c, 0x38, 0x6c, 0x6c, 0x38, 0x38, 0x38} },
	{AU8522_FILTER_COEF_R41C, {0x03, 0xff, 0x03, 0x03, 0xff, 0xff, 0xff} },
	{AU8522_FILTER_COEF_R41D, {0xbf, 0xc7, 0xbf, 0xbf, 0xc7, 0xc7, 0xc7} },
	{AU8522_FILTER_COEF_R41E, {0xa0, 0xdf, 0xa0, 0xa0, 0xdf, 0xdf, 0xdf} },
	{AU8522_FILTER_COEF_R41F, {0x10, 0x06, 0x10, 0x10, 0x06, 0x06, 0x06} },
	{AU8522_FILTER_COEF_R420, {0xae, 0x30, 0xae, 0xae, 0x30, 0x30, 0x30} },
	{AU8522_FILTER_COEF_R421, {0xc4, 0x01, 0xc4, 0xc4, 0x01, 0x01, 0x01} },
	{AU8522_FILTER_COEF_R422, {0x54, 0xdd, 0x54, 0x54, 0xdd, 0xdd, 0xdd} },
	{AU8522_FILTER_COEF_R423, {0xd0, 0xaf, 0xd0, 0xd0, 0xaf, 0xaf, 0xaf} },
	{AU8522_FILTER_COEF_R424, {0x1c, 0xf7, 0x1c, 0x1c, 0xf7, 0xf7, 0xf7} },
	{AU8522_FILTER_COEF_R425, {0x76, 0xdb, 0x76, 0x76, 0xdb, 0xdb, 0xdb} },
	{AU8522_FILTER_COEF_R426, {0x61, 0xc0, 0x61, 0x61, 0xc0, 0xc0, 0xc0} },
	{AU8522_FILTER_COEF_R427, {0xd1, 0x2f, 0xd1, 0xd1, 0x2f, 0x2f, 0x2f} },
	{AU8522_FILTER_COEF_R428, {0x84, 0xd8, 0x84, 0x84, 0xd8, 0xd8, 0xd8} },
	{AU8522_FILTER_COEF_R429, {0x06, 0xfb, 0x06, 0x06, 0xfb, 0xfb, 0xfb} },
	{AU8522_FILTER_COEF_R42A, {0x21, 0xd5, 0x21, 0x21, 0xd5, 0xd5, 0xd5} },
	{AU8522_FILTER_COEF_R42B, {0x0a, 0x3e, 0x0a, 0x0a, 0x3e, 0x3e, 0x3e} },
	{AU8522_FILTER_COEF_R42C, {0xe6, 0x15, 0xe6, 0xe6, 0x15, 0x15, 0x15} },
	{AU8522_FILTER_COEF_R42D, {0x01, 0x34, 0x01, 0x01, 0x34, 0x34, 0x34} },

};
#define NUM_FILTER_COEF (sizeof(filter_coef)\
			 / sizeof(struct au8522_register_config))


/* Registers 0x060b through 0x0652 are the LP Filter coefficients
   The values are as follows from left to right
   0="SIF" 1="ATVRF/ATVRF13"
   Note: the "ATVRF/ATVRF13" mode has never been tested
*/
struct au8522_register_config lpfilter_coef[] = {
	{0x060b, {0x21, 0x0b} },
	{0x060c, {0xad, 0xad} },
	{0x060d, {0x70, 0xf0} },
	{0x060e, {0xea, 0xe9} },
	{0x060f, {0xdd, 0xdd} },
	{0x0610, {0x08, 0x64} },
	{0x0611, {0x60, 0x60} },
	{0x0612, {0xf8, 0xb2} },
	{0x0613, {0x01, 0x02} },
	{0x0614, {0xe4, 0xb4} },
	{0x0615, {0x19, 0x02} },
	{0x0616, {0xae, 0x2e} },
	{0x0617, {0xee, 0xc5} },
	{0x0618, {0x56, 0x56} },
	{0x0619, {0x30, 0x58} },
	{0x061a, {0xf9, 0xf8} },
	{0x061b, {0x24, 0x64} },
	{0x061c, {0x07, 0x07} },
	{0x061d, {0x30, 0x30} },
	{0x061e, {0xa9, 0xed} },
	{0x061f, {0x09, 0x0b} },
	{0x0620, {0x42, 0xc2} },
	{0x0621, {0x1d, 0x2a} },
	{0x0622, {0xd6, 0x56} },
	{0x0623, {0x95, 0x8b} },
	{0x0624, {0x2b, 0x2b} },
	{0x0625, {0x30, 0x24} },
	{0x0626, {0x3e, 0x3e} },
	{0x0627, {0x62, 0xe2} },
	{0x0628, {0xe9, 0xf5} },
	{0x0629, {0x99, 0x19} },
	{0x062a, {0xd4, 0x11} },
	{0x062b, {0x03, 0x04} },
	{0x062c, {0xb5, 0x85} },
	{0x062d, {0x1e, 0x20} },
	{0x062e, {0x2a, 0xea} },
	{0x062f, {0xd7, 0xd2} },
	{0x0630, {0x15, 0x15} },
	{0x0631, {0xa3, 0xa9} },
	{0x0632, {0x1f, 0x1f} },
	{0x0633, {0xf9, 0xd1} },
	{0x0634, {0xc0, 0xc3} },
	{0x0635, {0x4d, 0x8d} },
	{0x0636, {0x21, 0x31} },
	{0x0637, {0x83, 0x83} },
	{0x0638, {0x08, 0x8c} },
	{0x0639, {0x19, 0x19} },
	{0x063a, {0x45, 0xa5} },
	{0x063b, {0xef, 0xec} },
	{0x063c, {0x8a, 0x8a} },
	{0x063d, {0xf4, 0xf6} },
	{0x063e, {0x8f, 0x8f} },
	{0x063f, {0x44, 0x0c} },
	{0x0640, {0xef, 0xf0} },
	{0x0641, {0x66, 0x66} },
	{0x0642, {0xcc, 0xd2} },
	{0x0643, {0x41, 0x41} },
	{0x0644, {0x63, 0x93} },
	{0x0645, {0x8e, 0x8e} },
	{0x0646, {0xa2, 0x42} },
	{0x0647, {0x7b, 0x7b} },
	{0x0648, {0x04, 0x04} },
	{0x0649, {0x00, 0x00} },
	{0x064a, {0x40, 0x40} },
	{0x064b, {0x8c, 0x98} },
	{0x064c, {0x00, 0x00} },
	{0x064d, {0x63, 0xc3} },
	{0x064e, {0x04, 0x04} },
	{0x064f, {0x20, 0x20} },
	{0x0650, {0x00, 0x00} },
	{0x0651, {0x40, 0x40} },
	{0x0652, {0x01, 0x01} },
};
#define NUM_LPFILTER_COEF (sizeof(lpfilter_coef)\
			   / sizeof(struct au8522_register_config))

static inline struct au8522_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct au8522_state, sd);
}

static void setup_vbi(struct au8522_state *state, int aud_input)
{
	int i;

	/* These are set to zero regardless of what mode we're in */
	au8522_writereg(state, AU8522_TVDEC_VBI_CTRL_H_REG017H, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_CTRL_L_REG018H, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_TOTAL_BITS_REG019H, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_TUNIT_H_REG01AH, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_TUNIT_L_REG01BH, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_THRESH1_REG01CH, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_PAT2_REG01EH, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_PAT1_REG01FH, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_PAT0_REG020H, 0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_MASK2_REG021H,
			0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_MASK1_REG022H,
			0x00);
	au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_MASK0_REG023H,
			0x00);

	/* Setup the VBI registers */
	for (i = 0x30; i < 0x60; i++)
		au8522_writereg(state, i, 0x40);

	/* For some reason, every register is 0x40 except register 0x44
	   (confirmed via the HVR-950q USB capture) */
	au8522_writereg(state, 0x44, 0x60);

	/* Enable VBI (we always do this regardless of whether the user is
	   viewing closed caption info) */
	au8522_writereg(state, AU8522_TVDEC_VBI_CTRL_H_REG017H,
			AU8522_TVDEC_VBI_CTRL_H_REG017H_CCON);

}

static void setup_decoder_defaults(struct au8522_state *state, u8 input_mode)
{
	int i;
	int filter_coef_type;

	/* Provide reasonable defaults for picture tuning values */
	au8522_writereg(state, AU8522_TVDEC_SHARPNESSREG009H, 0x07);
	au8522_writereg(state, AU8522_TVDEC_BRIGHTNESS_REG00AH, 0xed);
	state->brightness = 0xed - 128;
	au8522_writereg(state, AU8522_TVDEC_CONTRAST_REG00BH, 0x79);
	state->contrast = 0x79;
	au8522_writereg(state, AU8522_TVDEC_SATURATION_CB_REG00CH, 0x80);
	au8522_writereg(state, AU8522_TVDEC_SATURATION_CR_REG00DH, 0x80);
	au8522_writereg(state, AU8522_TVDEC_HUE_H_REG00EH, 0x00);
	au8522_writereg(state, AU8522_TVDEC_HUE_L_REG00FH, 0x00);

	/* Other decoder registers */
	au8522_writereg(state, AU8522_TVDEC_INT_MASK_REG010H, 0x00);

	if (input_mode == 0x23) {
		/* S-Video input mapping */
		au8522_writereg(state, AU8522_VIDEO_MODE_REG011H, 0x04);
	} else {
		/* All other modes (CVBS/ATVRF etc.) */
		au8522_writereg(state, AU8522_VIDEO_MODE_REG011H, 0x00);
	}

	au8522_writereg(state, AU8522_TVDEC_PGA_REG012H,
			AU8522_TVDEC_PGA_REG012H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_MODE_REG015H,
			AU8522_TVDEC_COMB_MODE_REG015H_CVBS);
	au8522_writereg(state, AU8522_TVDED_DBG_MODE_REG060H,
			AU8522_TVDED_DBG_MODE_REG060H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_FORMAT_CTRL1_REG061H,
			AU8522_TVDEC_FORMAT_CTRL1_REG061H_CVBS13);
	au8522_writereg(state, AU8522_TVDEC_FORMAT_CTRL2_REG062H,
			AU8522_TVDEC_FORMAT_CTRL2_REG062H_CVBS13);
	au8522_writereg(state, AU8522_TVDEC_VCR_DET_LLIM_REG063H,
			AU8522_TVDEC_VCR_DET_LLIM_REG063H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_VCR_DET_HLIM_REG064H,
			AU8522_TVDEC_VCR_DET_HLIM_REG064H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_VDIF_THR1_REG065H,
			AU8522_TVDEC_COMB_VDIF_THR1_REG065H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_VDIF_THR2_REG066H,
			AU8522_TVDEC_COMB_VDIF_THR2_REG066H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_VDIF_THR3_REG067H,
			AU8522_TVDEC_COMB_VDIF_THR3_REG067H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_NOTCH_THR_REG068H,
			AU8522_TVDEC_COMB_NOTCH_THR_REG068H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_HDIF_THR1_REG069H,
			AU8522_TVDEC_COMB_HDIF_THR1_REG069H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_HDIF_THR2_REG06AH,
			AU8522_TVDEC_COMB_HDIF_THR2_REG06AH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_HDIF_THR3_REG06BH,
			AU8522_TVDEC_COMB_HDIF_THR3_REG06BH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_DCDIF_THR1_REG06CH,
			AU8522_TVDEC_COMB_DCDIF_THR1_REG06CH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_DCDIF_THR2_REG06DH,
			AU8522_TVDEC_COMB_DCDIF_THR2_REG06DH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_DCDIF_THR3_REG06EH,
			AU8522_TVDEC_COMB_DCDIF_THR3_REG06EH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_UV_SEP_THR_REG06FH,
			AU8522_TVDEC_UV_SEP_THR_REG06FH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_DC_THR1_NTSC_REG070H,
			AU8522_TVDEC_COMB_DC_THR1_NTSC_REG070H_CVBS);
	au8522_writereg(state, AU8522_REG071H, AU8522_REG071H_CVBS);
	au8522_writereg(state, AU8522_REG072H, AU8522_REG072H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_COMB_DC_THR2_NTSC_REG073H,
			AU8522_TVDEC_COMB_DC_THR2_NTSC_REG073H_CVBS);
	au8522_writereg(state, AU8522_REG074H, AU8522_REG074H_CVBS);
	au8522_writereg(state, AU8522_REG075H, AU8522_REG075H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_DCAGC_CTRL_REG077H,
			AU8522_TVDEC_DCAGC_CTRL_REG077H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_PIC_START_ADJ_REG078H,
			AU8522_TVDEC_PIC_START_ADJ_REG078H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_AGC_HIGH_LIMIT_REG079H,
			AU8522_TVDEC_AGC_HIGH_LIMIT_REG079H_CVBS);
	au8522_writereg(state, AU8522_TVDEC_MACROVISION_SYNC_THR_REG07AH,
			AU8522_TVDEC_MACROVISION_SYNC_THR_REG07AH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_INTRP_CTRL_REG07BH,
			AU8522_TVDEC_INTRP_CTRL_REG07BH_CVBS);
	au8522_writereg(state, AU8522_TVDEC_AGC_LOW_LIMIT_REG0E4H,
			AU8522_TVDEC_AGC_LOW_LIMIT_REG0E4H_CVBS);
	au8522_writereg(state, AU8522_TOREGAAGC_REG0E5H,
			AU8522_TOREGAAGC_REG0E5H_CVBS);
	au8522_writereg(state, AU8522_REG016H, AU8522_REG016H_CVBS);

	setup_vbi(state, 0);

	if (input_mode == AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13 ||
	    input_mode == AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH24) {
		/* Despite what the table says, for the HVR-950q we still need
		   to be in CVBS mode for the S-Video input (reason uknown). */
		/* filter_coef_type = 3; */
		filter_coef_type = 5;
	} else {
		filter_coef_type = 5;
	}

	/* Load the Video Decoder Filter Coefficients */
	for (i = 0; i < NUM_FILTER_COEF; i++) {
		au8522_writereg(state, filter_coef[i].reg_name,
				filter_coef[i].reg_val[filter_coef_type]);
	}

	/* It's not clear what these registers are for, but they are always
	   set to the same value regardless of what mode we're in */
	au8522_writereg(state, AU8522_REG42EH, 0x87);
	au8522_writereg(state, AU8522_REG42FH, 0xa2);
	au8522_writereg(state, AU8522_REG430H, 0xbf);
	au8522_writereg(state, AU8522_REG431H, 0xcb);
	au8522_writereg(state, AU8522_REG432H, 0xa1);
	au8522_writereg(state, AU8522_REG433H, 0x41);
	au8522_writereg(state, AU8522_REG434H, 0x88);
	au8522_writereg(state, AU8522_REG435H, 0xc2);
	au8522_writereg(state, AU8522_REG436H, 0x3c);
}

static void au8522_setup_cvbs_mode(struct au8522_state *state)
{
	/* here we're going to try the pre-programmed route */
	au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
			AU8522_MODULE_CLOCK_CONTROL_REG0A3H_CVBS);

	au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);
	au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x0e);
	au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x10);

	au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
			AU8522_INPUT_CONTROL_REG081H_CVBS_CH1);

	setup_decoder_defaults(state, AU8522_INPUT_CONTROL_REG081H_CVBS_CH1);

	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
			AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
}

static void au8522_setup_cvbs_tuner_mode(struct au8522_state *state)
{
	/* here we're going to try the pre-programmed route */
	au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
			AU8522_MODULE_CLOCK_CONTROL_REG0A3H_CVBS);

	/* It's not clear why they turn off the PGA before enabling the clamp
	   control, but the Windows trace does it so we will too... */
	au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);

	/* Enable clamping control */
	au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x0e);

	/* Turn on the PGA */
	au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x10);

	/* Set input mode to CVBS on channel 4 with SIF audio input enabled */
	au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
			AU8522_INPUT_CONTROL_REG081H_CVBS_CH4_SIF);

	setup_decoder_defaults(state,
			       AU8522_INPUT_CONTROL_REG081H_CVBS_CH4_SIF);

	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
			AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
}

static void au8522_setup_svideo_mode(struct au8522_state *state)
{
	au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
			AU8522_MODULE_CLOCK_CONTROL_REG0A3H_SVIDEO);

	/* Set input to Y on Channe1, C on Channel 3 */
	au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
			AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13);

	/* Disable clamping control (required for S-video) */
	au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x00);

	setup_decoder_defaults(state,
			       AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13);

	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
			AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
}

/* ----------------------------------------------------------------------- */

static void disable_audio_input(struct au8522_state *state)
{
	/* This can probably be optimized */
	au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x00);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x00);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_REG0F4H, 0x00);
	au8522_writereg(state, AU8522_I2C_CONTROL_REG1_REG091H, 0x80);
	au8522_writereg(state, AU8522_I2C_CONTROL_REG0_REG090H, 0x84);

	au8522_writereg(state, AU8522_ENA_USB_REG101H, 0x00);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x7F);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x7F);
	au8522_writereg(state, AU8522_REG0F9H, AU8522_REG0F9H_AUDIO);
	au8522_writereg(state, AU8522_AUDIO_MODE_REG0F1H, 0x40);

	au8522_writereg(state, AU8522_GPIO_DATA_REG0E2H, 0x11);
	msleep(5);
	au8522_writereg(state, AU8522_GPIO_DATA_REG0E2H, 0x00);

	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_1_REG0A5H, 0x04);
	au8522_writereg(state, AU8522_AUDIOFREQ_REG606H, 0x03);
	au8522_writereg(state, AU8522_I2S_CTRL_2_REG112H, 0x02);

	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
			AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
}

/* 0=disable, 1=SIF */
static void set_audio_input(struct au8522_state *state, int aud_input)
{
	int i;

	/* Note that this function needs to be used in conjunction with setting
	   the input routing via register 0x81 */

	if (aud_input == AU8522_AUDIO_NONE) {
		disable_audio_input(state);
		return;
	}

	if (aud_input != AU8522_AUDIO_SIF) {
		/* The caller asked for a mode we don't currently support */
		printk(KERN_ERR "Unsupported audio mode requested! mode=%d\n",
		       aud_input);
		return;
	}

	/* Load the Audio Decoder Filter Coefficients */
	for (i = 0; i < NUM_LPFILTER_COEF; i++) {
		au8522_writereg(state, lpfilter_coef[i].reg_name,
				lpfilter_coef[i].reg_val[0]);
	}

	/* Setup audio */
	au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x00);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x00);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_REG0F4H, 0x00);
	au8522_writereg(state, AU8522_I2C_CONTROL_REG1_REG091H, 0x80);
	au8522_writereg(state, AU8522_I2C_CONTROL_REG0_REG090H, 0x84);
	msleep(150);
	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H, 0x00);
	msleep(1);
	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H, 0x9d);
	msleep(50);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x7F);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x7F);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_REG0F4H, 0xff);
	msleep(80);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x7F);
	au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x7F);
	au8522_writereg(state, AU8522_REG0F9H, AU8522_REG0F9H_AUDIO);
	au8522_writereg(state, AU8522_AUDIO_MODE_REG0F1H, 0x82);
	msleep(70);
	au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_1_REG0A5H, 0x09);
	au8522_writereg(state, AU8522_AUDIOFREQ_REG606H, 0x03);
	au8522_writereg(state, AU8522_I2S_CTRL_2_REG112H, 0xc2);
}

/* ----------------------------------------------------------------------- */

static int au8522_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct au8522_state *state = to_state(sd);

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		state->brightness = ctrl->value;
		au8522_writereg(state, AU8522_TVDEC_BRIGHTNESS_REG00AH,
				ctrl->value - 128);
		break;
	case V4L2_CID_CONTRAST:
		state->contrast = ctrl->value;
		au8522_writereg(state, AU8522_TVDEC_CONTRAST_REG00BH,
				ctrl->value);
		break;
	case V4L2_CID_SATURATION:
	case V4L2_CID_HUE:
	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_MUTE:
		/* Not yet implemented */
	default:
		return -EINVAL;
	}

	return 0;
}

static int au8522_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct au8522_state *state = to_state(sd);

	/* Note that we are using values cached in the state structure instead
	   of reading the registers due to issues with i2c reads not working
	   properly/consistently yet on the HVR-950q */

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		ctrl->value = state->brightness;
		break;
	case V4L2_CID_CONTRAST:
		ctrl->value = state->contrast;
		break;
	case V4L2_CID_SATURATION:
	case V4L2_CID_HUE:
	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_MUTE:
		/* Not yet supported */
	default:
		return -EINVAL;
	}

	return 0;
}

/* ----------------------------------------------------------------------- */

static int au8522_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
{
	switch (fmt->type) {
	default:
		return -EINVAL;
	}
	return 0;
}

static int au8522_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
{
	switch (fmt->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		/* Not yet implemented */
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

/* ----------------------------------------------------------------------- */

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int au8522_g_register(struct v4l2_subdev *sd,
			     struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct au8522_state *state = to_state(sd);

	if (!v4l2_chip_match_i2c_client(client, &reg->match))
		return -EINVAL;
	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;
	reg->val = au8522_readreg(state, reg->reg & 0xffff);
	return 0;
}

static int au8522_s_register(struct v4l2_subdev *sd,
			     struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct au8522_state *state = to_state(sd);

	if (!v4l2_chip_match_i2c_client(client, &reg->match))
		return -EINVAL;
	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;
	au8522_writereg(state, reg->reg, reg->val & 0xff);
	return 0;
}
#endif

static int au8522_s_stream(struct v4l2_subdev *sd, int enable)
{
	struct au8522_state *state = to_state(sd);

	if (enable) {
		au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
				0x01);
		msleep(1);
		au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
				AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
	} else {
		/* This does not completely power down the device
		   (it only reduces it from around 140ma to 80ma) */
		au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
				1 << 5);
	}
	return 0;
}

static int au8522_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_CONTRAST:
		return v4l2_ctrl_query_fill(qc, 0, 255, 1,
					    AU8522_TVDEC_CONTRAST_REG00BH_CVBS);
	case V4L2_CID_BRIGHTNESS:
		return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
	case V4L2_CID_SATURATION:
	case V4L2_CID_HUE:
		/* Not yet implemented */
	default:
		break;
	}

	qc->type = 0;
	return -EINVAL;
}

static int au8522_reset(struct v4l2_subdev *sd, u32 val)
{
	struct au8522_state *state = to_state(sd);

	au8522_writereg(state, 0xa4, 1 << 5);

	return 0;
}

static int au8522_s_video_routing(struct v4l2_subdev *sd,
				  const struct v4l2_routing *route)
{
	struct au8522_state *state = to_state(sd);

	au8522_reset(sd, 0);

	/* Jam open the i2c gate to the tuner.  We do this here to handle the
	   case where the user went into digital mode (causing the gate to be
	   closed), and then came back to analog mode */
	au8522_writereg(state, 0x106, 1);

	if (route->input == AU8522_COMPOSITE_CH1) {
		au8522_setup_cvbs_mode(state);
	} else if (route->input == AU8522_SVIDEO_CH13) {
		au8522_setup_svideo_mode(state);
	} else if (route->input == AU8522_COMPOSITE_CH4_SIF) {
		au8522_setup_cvbs_tuner_mode(state);
	} else {
		printk(KERN_ERR "au8522 mode not currently supported\n");
		return -EINVAL;
	}
	return 0;
}

static int au8522_s_audio_routing(struct v4l2_subdev *sd,
				  const struct v4l2_routing *route)
{
	struct au8522_state *state = to_state(sd);
	set_audio_input(state, route->input);
	return 0;
}

static int au8522_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{
	int val = 0;
	struct au8522_state *state = to_state(sd);
	u8 lock_status;

	/* Interrogate the decoder to see if we are getting a real signal */
	lock_status = au8522_readreg(state, 0x00);
	if (lock_status == 0xa2)
		vt->signal = 0x01;
	else
		vt->signal = 0x00;

	vt->capability |=
		V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
		V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;

	val = V4L2_TUNER_SUB_MONO;
	vt->rxsubchans = val;
	vt->audmode = V4L2_TUNER_MODE_STEREO;
	return 0;
}

static int au8522_g_chip_ident(struct v4l2_subdev *sd,
			       struct v4l2_dbg_chip_ident *chip)
{
	struct au8522_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return v4l2_chip_ident_i2c_client(client, chip, state->id, state->rev);
}

static int au8522_log_status(struct v4l2_subdev *sd)
{
	/* FIXME: Add some status info here */
	return 0;
}

/* ----------------------------------------------------------------------- */

static const struct v4l2_subdev_core_ops au8522_core_ops = {
	.log_status = au8522_log_status,
	.g_chip_ident = au8522_g_chip_ident,
	.g_ctrl = au8522_g_ctrl,
	.s_ctrl = au8522_s_ctrl,
	.queryctrl = au8522_queryctrl,
	.reset = au8522_reset,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.g_register = au8522_g_register,
	.s_register = au8522_s_register,
#endif
};

static const struct v4l2_subdev_tuner_ops au8522_tuner_ops = {
	.g_tuner = au8522_g_tuner,
};

static const struct v4l2_subdev_audio_ops au8522_audio_ops = {
	.s_routing = au8522_s_audio_routing,
};

static const struct v4l2_subdev_video_ops au8522_video_ops = {
	.s_routing = au8522_s_video_routing,
	.g_fmt = au8522_g_fmt,
	.s_fmt = au8522_s_fmt,
	.s_stream = au8522_s_stream,
};

static const struct v4l2_subdev_ops au8522_ops = {
	.core = &au8522_core_ops,
	.tuner = &au8522_tuner_ops,
	.audio = &au8522_audio_ops,
	.video = &au8522_video_ops,
};

/* ----------------------------------------------------------------------- */

static int au8522_probe(struct i2c_client *client,
			const struct i2c_device_id *did)
{
	struct au8522_state *state;
	struct v4l2_subdev *sd;
	int instance;
	struct au8522_config *demod_config;

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(client->adapter,
				     I2C_FUNC_SMBUS_BYTE_DATA)) {
		return -EIO;
	}

	/* allocate memory for the internal state */
	instance = au8522_get_state(&state, client->adapter, client->addr);
	switch (instance) {
	case 0:
		printk(KERN_ERR "au8522_decoder allocation failed\n");
		return -EIO;
	case 1:
		/* new demod instance */
		printk(KERN_INFO "au8522_decoder creating new instance...\n");
		break;
	default:
		/* existing demod instance */
		printk(KERN_INFO "au8522_decoder attach existing instance.\n");
		break;
	}

	demod_config = kzalloc(sizeof(struct au8522_config), GFP_KERNEL);
	demod_config->demod_address = 0x8e >> 1;

	state->config = demod_config;
	state->i2c = client->adapter;

	sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &au8522_ops);

	state->c = client;
	state->vid_input = AU8522_COMPOSITE_CH1;
	state->aud_input = AU8522_AUDIO_NONE;
	state->id = 8522;
	state->rev = 0;

	/* Jam open the i2c gate to the tuner */
	au8522_writereg(state, 0x106, 1);

	return 0;
}

static int au8522_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	v4l2_device_unregister_subdev(sd);
	au8522_release_state(to_state(sd));
	return 0;
}

static const struct i2c_device_id au8522_id[] = {
	{"au8522", 0},
	{}
};

MODULE_DEVICE_TABLE(i2c, au8522_id);

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "au8522",
	.probe = au8522_probe,
	.remove = au8522_remove,
	.id_table = au8522_id,
};