summaryrefslogtreecommitdiffstats
path: root/drivers/media/i2c/msp3400-kthreads.c
blob: d3b0d1c18efdb4dac8d1142c63284c7d0aeb59eb (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
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Programming the mspx4xx sound processor family
 *
 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
 */


#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/freezer.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/drv-intf/msp3400.h>
#include <linux/kthread.h>
#include <linux/suspend.h>
#include "msp3400-driver.h"

/* this one uses the automatic sound standard detection of newer msp34xx
   chip versions */
static struct {
	int retval;
	int main, second;
	char *name;
	v4l2_std_id std;
} msp_stdlist[] = {
	{ 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
	{ 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
	{ 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
	  "4.5/4.72  M Dual FM-Stereo", V4L2_STD_MN },
	{ 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
	  "5.5/5.74  B/G Dual FM-Stereo", V4L2_STD_BG },
	{ 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
	  "6.5/6.25  D/K1 Dual FM-Stereo", V4L2_STD_DK },
	{ 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
	  "6.5/6.74  D/K2 Dual FM-Stereo", V4L2_STD_DK },
	{ 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
	  "6.5  D/K FM-Mono (HDEV3)", V4L2_STD_DK },
	{ 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
	  "6.5/5.74  D/K3 Dual FM-Stereo", V4L2_STD_DK },
	{ 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
	  "5.5/5.85  B/G NICAM FM", V4L2_STD_BG },
	{ 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
	  "6.5/5.85  L NICAM AM", V4L2_STD_L },
	{ 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
	  "6.0/6.55  I NICAM FM", V4L2_STD_PAL_I },
	{ 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
	  "6.5/5.85  D/K NICAM FM", V4L2_STD_DK },
	{ 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
	  "6.5/5.85  D/K NICAM FM (HDEV2)", V4L2_STD_DK },
	{ 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
	  "6.5/5.85  D/K NICAM FM (HDEV3)", V4L2_STD_DK },
	{ 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
	  "4.5  M BTSC-Stereo", V4L2_STD_MTS },
	{ 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
	  "4.5  M BTSC-Mono + SAP", V4L2_STD_MTS },
	{ 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
	  "4.5  M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
	{ 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
	  "10.7  FM-Stereo Radio", V4L2_STD_ALL },
	{ 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
	  "6.5  SAT-Mono", V4L2_STD_ALL },
	{ 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
	  "7.02/7.20  SAT-Stereo", V4L2_STD_ALL },
	{ 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
	  "7.2  SAT ADR", V4L2_STD_ALL },
	{     -1, 0, 0, NULL, 0 }, /* EOF */
};

static struct msp3400c_init_data_dem {
	int fir1[6];
	int fir2[6];
	int cdo1;
	int cdo2;
	int ad_cv;
	int mode_reg;
	int dsp_src;
	int dsp_matrix;
} msp3400c_init_data[] = {
	{	/* AM (for carrier detect / msp3400) */
		{75, 19, 36, 35, 39, 40},
		{75, 19, 36, 35, 39, 40},
		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
		0x00d0, 0x0500, 0x0020, 0x3000
	}, {	/* AM (for carrier detect / msp3410) */
		{-1, -1, -8, 2, 59, 126},
		{-1, -1, -8, 2, 59, 126},
		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
		0x00d0, 0x0100, 0x0020, 0x3000
	}, {	/* FM Radio */
		{-8, -8, 4, 6, 78, 107},
		{-8, -8, 4, 6, 78, 107},
		MSP_CARRIER(10.7), MSP_CARRIER(10.7),
		0x00d0, 0x0480, 0x0020, 0x3000
	}, {	/* Terrestrial FM-mono + FM-stereo */
		{3, 18, 27, 48, 66, 72},
		{3, 18, 27, 48, 66, 72},
		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
		0x00d0, 0x0480, 0x0030, 0x3000
	}, {	/* Sat FM-mono */
		{ 1, 9, 14, 24, 33, 37},
		{ 3, 18, 27, 48, 66, 72},
		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
		0x00c6, 0x0480, 0x0000, 0x3000
	}, {	/* NICAM/FM --  B/G (5.5/5.85), D/K (6.5/5.85) */
		{-2, -8, -10, 10, 50, 86},
		{3, 18, 27, 48, 66, 72},
		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
		0x00d0, 0x0040, 0x0120, 0x3000
	}, {	/* NICAM/FM -- I (6.0/6.552) */
		{2, 4, -6, -4, 40, 94},
		{3, 18, 27, 48, 66, 72},
		MSP_CARRIER(6.0), MSP_CARRIER(6.0),
		0x00d0, 0x0040, 0x0120, 0x3000
	}, {	/* NICAM/AM -- L (6.5/5.85) */
		{-2, -8, -10, 10, 50, 86},
		{-4, -12, -9, 23, 79, 126},
		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
		0x00c6, 0x0140, 0x0120, 0x7c00
	},
};

struct msp3400c_carrier_detect {
	int   cdo;
	char *name;
};

static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
	/* main carrier */
	{ MSP_CARRIER(4.5),        "4.5   NTSC"                   },
	{ MSP_CARRIER(5.5),        "5.5   PAL B/G"                },
	{ MSP_CARRIER(6.0),        "6.0   PAL I"                  },
	{ MSP_CARRIER(6.5),        "6.5   PAL D/K + SAT + SECAM"  }
};

static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
	/* PAL B/G */
	{ MSP_CARRIER(5.7421875),  "5.742 PAL B/G FM-stereo"     },
	{ MSP_CARRIER(5.85),       "5.85  PAL B/G NICAM"         }
};

static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
	/* PAL SAT / SECAM */
	{ MSP_CARRIER(5.85),       "5.85  PAL D/K + SECAM NICAM" },
	{ MSP_CARRIER(6.2578125),  "6.25  PAL D/K1 FM-stereo" },
	{ MSP_CARRIER(6.7421875),  "6.74  PAL D/K2 FM-stereo" },
	{ MSP_CARRIER(7.02),       "7.02  PAL SAT FM-stereo s/b" },
	{ MSP_CARRIER(7.20),       "7.20  PAL SAT FM-stereo s"   },
	{ MSP_CARRIER(7.38),       "7.38  PAL SAT FM-stereo b"   },
};

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

const char *msp_standard_std_name(int std)
{
	int i;

	for (i = 0; msp_stdlist[i].name != NULL; i++)
		if (msp_stdlist[i].retval == std)
			return msp_stdlist[i].name;
	return "unknown";
}

static v4l2_std_id msp_standard_std(int std)
{
	int i;

	for (i = 0; msp_stdlist[i].name != NULL; i++)
		if (msp_stdlist[i].retval == std)
			return msp_stdlist[i].std;
	return V4L2_STD_ALL;
}

static void msp_set_source(struct i2c_client *client, u16 src)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	if (msp_dolby) {
		msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
		msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
	} else {
		msp_write_dsp(client, 0x0008, src);
		msp_write_dsp(client, 0x0009, src);
	}
	msp_write_dsp(client, 0x000a, src);
	msp_write_dsp(client, 0x000b, src);
	msp_write_dsp(client, 0x000c, src);
	if (state->has_scart2_out)
		msp_write_dsp(client, 0x0041, src);
}

void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
{
	msp_write_dem(client, 0x0093, cdo1 & 0xfff);
	msp_write_dem(client, 0x009b, cdo1 >> 12);
	msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
	msp_write_dem(client, 0x00ab, cdo2 >> 12);
	msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
}

void msp3400c_set_mode(struct i2c_client *client, int mode)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
	int tuner = (state->route_in >> 3) & 1;
	int i;

	dev_dbg_lvl(&client->dev, 1, msp_debug, "set_mode: %d\n", mode);
	state->mode = mode;
	state->rxsubchans = V4L2_TUNER_SUB_MONO;

	msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));

	for (i = 5; i >= 0; i--)               /* fir 1 */
		msp_write_dem(client, 0x0001, data->fir1[i]);

	msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
	msp_write_dem(client, 0x0005, 0x0040);
	msp_write_dem(client, 0x0005, 0x0000);
	for (i = 5; i >= 0; i--)
		msp_write_dem(client, 0x0005, data->fir2[i]);

	msp_write_dem(client, 0x0083, data->mode_reg);

	msp3400c_set_carrier(client, data->cdo1, data->cdo2);

	msp_set_source(client, data->dsp_src);
	/* set prescales */

	/* volume prescale for SCART (AM mono input) */
	msp_write_dsp(client, 0x000d, 0x1900);
	msp_write_dsp(client, 0x000e, data->dsp_matrix);
	if (state->has_nicam) /* nicam prescale */
		msp_write_dsp(client, 0x0010, 0x5a00);
}

/* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
   nor do they support stereo BTSC. */
static void msp3400c_set_audmode(struct i2c_client *client)
{
	static char *strmode[] = {
		"mono", "stereo", "lang2", "lang1", "lang1+lang2"
	};
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
		strmode[state->audmode] : "unknown";
	int src = 0;	/* channel source: FM/AM, nicam or SCART */
	int audmode = state->audmode;

	if (state->opmode == OPMODE_AUTOSELECT) {
		/* this method would break everything, let's make sure
		 * it's never called
		 */
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"set_audmode called with mode=%d instead of set_source (ignored)\n",
			state->audmode);
		return;
	}

	/* Note: for the C and D revs no NTSC stereo + SAP is possible as
	   the hardware does not support SAP. So the rxsubchans combination
	   of STEREO | LANG2 does not occur. */

	if (state->mode != MSP_MODE_EXTERN) {
		/* switch to mono if only mono is available */
		if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
			audmode = V4L2_TUNER_MODE_MONO;
		/* if bilingual */
		else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
			/* and mono or stereo, then fallback to lang1 */
			if (audmode == V4L2_TUNER_MODE_MONO ||
			    audmode == V4L2_TUNER_MODE_STEREO)
				audmode = V4L2_TUNER_MODE_LANG1;
		}
		/* if stereo, and audmode is not mono, then switch to stereo */
		else if (audmode != V4L2_TUNER_MODE_MONO)
			audmode = V4L2_TUNER_MODE_STEREO;
	}

	/* switch demodulator */
	switch (state->mode) {
	case MSP_MODE_FM_TERRA:
		dev_dbg_lvl(&client->dev, 1, msp_debug, "FM set_audmode: %s\n", modestr);
		switch (audmode) {
		case V4L2_TUNER_MODE_STEREO:
			msp_write_dsp(client, 0x000e, 0x3001);
			break;
		case V4L2_TUNER_MODE_MONO:
		case V4L2_TUNER_MODE_LANG1:
		case V4L2_TUNER_MODE_LANG2:
		case V4L2_TUNER_MODE_LANG1_LANG2:
			msp_write_dsp(client, 0x000e, 0x3000);
			break;
		}
		break;
	case MSP_MODE_FM_SAT:
		dev_dbg_lvl(&client->dev, 1, msp_debug, "SAT set_audmode: %s\n", modestr);
		switch (audmode) {
		case V4L2_TUNER_MODE_MONO:
			msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
			break;
		case V4L2_TUNER_MODE_STEREO:
		case V4L2_TUNER_MODE_LANG1_LANG2:
			msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
			break;
		case V4L2_TUNER_MODE_LANG1:
			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
			break;
		case V4L2_TUNER_MODE_LANG2:
			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
			break;
		}
		break;
	case MSP_MODE_FM_NICAM1:
	case MSP_MODE_FM_NICAM2:
	case MSP_MODE_AM_NICAM:
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"NICAM set_audmode: %s\n", modestr);
		if (state->nicam_on)
			src = 0x0100;  /* NICAM */
		break;
	case MSP_MODE_BTSC:
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"BTSC set_audmode: %s\n", modestr);
		break;
	case MSP_MODE_EXTERN:
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"extern set_audmode: %s\n", modestr);
		src = 0x0200;  /* SCART */
		break;
	case MSP_MODE_FM_RADIO:
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"FM-Radio set_audmode: %s\n", modestr);
		break;
	default:
		dev_dbg_lvl(&client->dev, 1, msp_debug, "mono set_audmode\n");
		return;
	}

	/* switch audio */
	dev_dbg_lvl(&client->dev, 1, msp_debug, "set audmode %d\n", audmode);
	switch (audmode) {
	case V4L2_TUNER_MODE_STEREO:
	case V4L2_TUNER_MODE_LANG1_LANG2:
		src |= 0x0020;
		break;
	case V4L2_TUNER_MODE_MONO:
		if (state->mode == MSP_MODE_AM_NICAM) {
			dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to AM mono\n");
			/* AM mono decoding is handled by tuner, not MSP chip */
			/* SCART switching control register */
			msp_set_scart(client, SCART_MONO, 0);
			src = 0x0200;
			break;
		}
		if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
			src = 0x0030;
		break;
	case V4L2_TUNER_MODE_LANG1:
		break;
	case V4L2_TUNER_MODE_LANG2:
		src |= 0x0010;
		break;
	}
	dev_dbg_lvl(&client->dev, 1, msp_debug,
		"set_audmode final source/matrix = 0x%x\n", src);

	msp_set_source(client, src);
}

static void msp3400c_print_mode(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	if (state->main == state->second)
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"mono sound carrier: %d.%03d MHz\n",
			state->main / 910000, (state->main / 910) % 1000);
	else
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"main sound carrier: %d.%03d MHz\n",
			state->main / 910000, (state->main / 910) % 1000);
	if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"NICAM/FM carrier  : %d.%03d MHz\n",
			state->second / 910000, (state->second/910) % 1000);
	if (state->mode == MSP_MODE_AM_NICAM)
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"NICAM/AM carrier  : %d.%03d MHz\n",
			state->second / 910000, (state->second / 910) % 1000);
	if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"FM-stereo carrier : %d.%03d MHz\n",
			state->second / 910000, (state->second / 910) % 1000);
	}
}

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

static int msp3400c_detect_stereo(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	int val;
	int rxsubchans = state->rxsubchans;
	int newnicam = state->nicam_on;
	int update = 0;

	switch (state->mode) {
	case MSP_MODE_FM_TERRA:
		val = msp_read_dsp(client, 0x18);
		if (val > 32767)
			val -= 65536;
		dev_dbg_lvl(&client->dev, 2, msp_debug,
			"stereo detect register: %d\n", val);
		if (val > 8192) {
			rxsubchans = V4L2_TUNER_SUB_STEREO;
		} else if (val < -4096) {
			rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
		} else {
			rxsubchans = V4L2_TUNER_SUB_MONO;
		}
		newnicam = 0;
		break;
	case MSP_MODE_FM_NICAM1:
	case MSP_MODE_FM_NICAM2:
	case MSP_MODE_AM_NICAM:
		val = msp_read_dem(client, 0x23);
		dev_dbg_lvl(&client->dev, 2, msp_debug, "nicam sync=%d, mode=%d\n",
			val & 1, (val & 0x1e) >> 1);

		if (val & 1) {
			/* nicam synced */
			switch ((val & 0x1e) >> 1)  {
			case 0:
			case 8:
				rxsubchans = V4L2_TUNER_SUB_STEREO;
				break;
			case 1:
			case 9:
				rxsubchans = V4L2_TUNER_SUB_MONO;
				break;
			case 2:
			case 10:
				rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
				break;
			default:
				rxsubchans = V4L2_TUNER_SUB_MONO;
				break;
			}
			newnicam = 1;
		} else {
			newnicam = 0;
			rxsubchans = V4L2_TUNER_SUB_MONO;
		}
		break;
	}
	if (rxsubchans != state->rxsubchans) {
		update = 1;
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"watch: rxsubchans %02x => %02x\n",
			state->rxsubchans, rxsubchans);
		state->rxsubchans = rxsubchans;
	}
	if (newnicam != state->nicam_on) {
		update = 1;
		dev_dbg_lvl(&client->dev, 1, msp_debug, "watch: nicam %d => %d\n",
			state->nicam_on, newnicam);
		state->nicam_on = newnicam;
	}
	return update;
}

/*
 * A kernel thread for msp3400 control -- we don't want to block the
 * in the ioctl while doing the sound carrier & stereo detect
 */
/* stereo/multilang monitoring */
static void watch_stereo(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	if (msp_detect_stereo(client))
		msp_set_audmode(client);

	if (msp_once)
		state->watch_stereo = 0;
}

int msp3400c_thread(void *data)
{
	struct i2c_client *client = data;
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	struct msp3400c_carrier_detect *cd;
	int count, max1, max2, val1, val2, val, i;

	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 daemon started\n");
	state->detected_std = V4L2_STD_ALL;
	set_freezable();
	for (;;) {
		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: sleep\n");
		msp_sleep(state, -1);
		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: wakeup\n");

restart:
		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
		state->restart = 0;
		if (kthread_should_stop())
			break;

		if (state->radio || MSP_MODE_EXTERN == state->mode) {
			/* no carrier scan, just unmute */
			dev_dbg_lvl(&client->dev, 1, msp_debug,
				"thread: no carrier scan\n");
			state->scan_in_progress = 0;
			msp_update_volume(state);
			continue;
		}

		/* mute audio */
		state->scan_in_progress = 1;
		msp_update_volume(state);

		msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
		val1 = val2 = 0;
		max1 = max2 = -1;
		state->watch_stereo = 0;
		state->nicam_on = 0;

		/* wait for tuner to settle down after a channel change */
		if (msp_sleep(state, 200))
			goto restart;

		/* carrier detect pass #1 -- main carrier */
		cd = msp3400c_carrier_detect_main;
		count = ARRAY_SIZE(msp3400c_carrier_detect_main);

		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
			/* autodetect doesn't work well with AM ... */
			max1 = 3;
			count = 0;
			dev_dbg_lvl(&client->dev, 1, msp_debug, "AM sound override\n");
		}

		for (i = 0; i < count; i++) {
			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
			if (msp_sleep(state, 100))
				goto restart;
			val = msp_read_dsp(client, 0x1b);
			if (val > 32767)
				val -= 65536;
			if (val1 < val)
				val1 = val, max1 = i;
			dev_dbg_lvl(&client->dev, 1, msp_debug,
				"carrier1 val: %5d / %s\n", val, cd[i].name);
		}

		/* carrier detect pass #2 -- second (stereo) carrier */
		switch (max1) {
		case 1: /* 5.5 */
			cd = msp3400c_carrier_detect_55;
			count = ARRAY_SIZE(msp3400c_carrier_detect_55);
			break;
		case 3: /* 6.5 */
			cd = msp3400c_carrier_detect_65;
			count = ARRAY_SIZE(msp3400c_carrier_detect_65);
			break;
		case 0: /* 4.5 */
		case 2: /* 6.0 */
		default:
			cd = NULL;
			count = 0;
			break;
		}

		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
			/* autodetect doesn't work well with AM ... */
			cd = NULL;
			count = 0;
			max2 = 0;
		}
		for (i = 0; i < count; i++) {
			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
			if (msp_sleep(state, 100))
				goto restart;
			val = msp_read_dsp(client, 0x1b);
			if (val > 32767)
				val -= 65536;
			if (val2 < val)
				val2 = val, max2 = i;
			dev_dbg_lvl(&client->dev, 1, msp_debug,
				"carrier2 val: %5d / %s\n", val, cd[i].name);
		}

		/* program the msp3400 according to the results */
		state->main = msp3400c_carrier_detect_main[max1].cdo;
		switch (max1) {
		case 1: /* 5.5 */
			state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
			if (max2 == 0) {
				/* B/G FM-stereo */
				state->second = msp3400c_carrier_detect_55[max2].cdo;
				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
				state->watch_stereo = 1;
			} else if (max2 == 1 && state->has_nicam) {
				/* B/G NICAM */
				state->second = msp3400c_carrier_detect_55[max2].cdo;
				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
				state->nicam_on = 1;
				state->watch_stereo = 1;
			} else {
				goto no_second;
			}
			break;
		case 2: /* 6.0 */
			/* PAL I NICAM */
			state->detected_std = V4L2_STD_PAL_I;
			state->second = MSP_CARRIER(6.552);
			msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
			state->nicam_on = 1;
			state->watch_stereo = 1;
			break;
		case 3: /* 6.5 */
			if (max2 == 1 || max2 == 2) {
				/* D/K FM-stereo */
				state->second = msp3400c_carrier_detect_65[max2].cdo;
				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
				state->watch_stereo = 1;
				state->detected_std = V4L2_STD_DK;
			} else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
				/* L NICAM or AM-mono */
				state->second = msp3400c_carrier_detect_65[max2].cdo;
				msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
				state->watch_stereo = 1;
				state->detected_std = V4L2_STD_L;
			} else if (max2 == 0 && state->has_nicam) {
				/* D/K NICAM */
				state->second = msp3400c_carrier_detect_65[max2].cdo;
				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
				state->nicam_on = 1;
				state->watch_stereo = 1;
				state->detected_std = V4L2_STD_DK;
			} else {
				goto no_second;
			}
			break;
		case 0: /* 4.5 */
			state->detected_std = V4L2_STD_MN;
			/* fall-through */
		default:
no_second:
			state->second = msp3400c_carrier_detect_main[max1].cdo;
			msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
			break;
		}
		msp3400c_set_carrier(client, state->second, state->main);

		/* unmute */
		state->scan_in_progress = 0;
		msp3400c_set_audmode(client);
		msp_update_volume(state);

		if (msp_debug)
			msp3400c_print_mode(client);

		/* monitor tv audio mode, the first time don't wait
		   so long to get a quick stereo/bilingual result */
		count = 3;
		while (state->watch_stereo) {
			if (msp_sleep(state, count ? 1000 : 5000))
				goto restart;
			if (count)
				count--;
			watch_stereo(client);
		}
	}
	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
	return 0;
}


int msp3410d_thread(void *data)
{
	struct i2c_client *client = data;
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	int val, i, std, count;

	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n");
	state->detected_std = V4L2_STD_ALL;
	set_freezable();
	for (;;) {
		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n");
		msp_sleep(state, -1);
		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n");

restart:
		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
		state->restart = 0;
		if (kthread_should_stop())
			break;

		if (state->mode == MSP_MODE_EXTERN) {
			/* no carrier scan needed, just unmute */
			dev_dbg_lvl(&client->dev, 1, msp_debug,
				"thread: no carrier scan\n");
			state->scan_in_progress = 0;
			msp_update_volume(state);
			continue;
		}

		/* mute audio */
		state->scan_in_progress = 1;
		msp_update_volume(state);

		/* start autodetect. Note: autodetect is not supported for
		   NTSC-M and radio, hence we force the standard in those
		   cases. */
		if (state->radio)
			std = 0x40;
		else
			std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
		state->watch_stereo = 0;
		state->nicam_on = 0;

		/* wait for tuner to settle down after a channel change */
		if (msp_sleep(state, 200))
			goto restart;

		if (msp_debug)
			dev_dbg_lvl(&client->dev, 2, msp_debug,
				"setting standard: %s (0x%04x)\n",
				msp_standard_std_name(std), std);

		if (std != 1) {
			/* programmed some specific mode */
			val = std;
		} else {
			/* triggered autodetect */
			msp_write_dem(client, 0x20, std);
			for (;;) {
				if (msp_sleep(state, 100))
					goto restart;

				/* check results */
				val = msp_read_dem(client, 0x7e);
				if (val < 0x07ff)
					break;
				dev_dbg_lvl(&client->dev, 2, msp_debug,
					"detection still in progress\n");
			}
		}
		for (i = 0; msp_stdlist[i].name != NULL; i++)
			if (msp_stdlist[i].retval == val)
				break;
		dev_dbg_lvl(&client->dev, 1, msp_debug, "current standard: %s (0x%04x)\n",
			msp_standard_std_name(val), val);
		state->main   = msp_stdlist[i].main;
		state->second = msp_stdlist[i].second;
		state->std = val;
		state->rxsubchans = V4L2_TUNER_SUB_MONO;

		if (msp_amsound && !state->radio &&
		    (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
			/* autodetection has failed, let backup */
			dev_dbg_lvl(&client->dev, 1, msp_debug, "autodetection failed, switching to backup standard: %s (0x%04x)\n",
				msp_stdlist[8].name ?
					msp_stdlist[8].name : "unknown", val);
			state->std = val = 0x0009;
			msp_write_dem(client, 0x20, val);
		} else {
			state->detected_std = msp_standard_std(state->std);
		}

		/* set stereo */
		switch (val) {
		case 0x0008: /* B/G NICAM */
		case 0x000a: /* I NICAM */
		case 0x000b: /* D/K NICAM */
			if (val == 0x000a)
				state->mode = MSP_MODE_FM_NICAM2;
			else
				state->mode = MSP_MODE_FM_NICAM1;
			/* just turn on stereo */
			state->nicam_on = 1;
			state->watch_stereo = 1;
			break;
		case 0x0009:
			state->mode = MSP_MODE_AM_NICAM;
			state->nicam_on = 1;
			state->watch_stereo = 1;
			break;
		case 0x0020: /* BTSC */
			/* The pre-'G' models only have BTSC-mono */
			state->mode = MSP_MODE_BTSC;
			break;
		case 0x0040: /* FM radio */
			state->mode = MSP_MODE_FM_RADIO;
			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
			/* not needed in theory if we have radio, but
			   short programming enables carrier mute */
			msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
			msp3400c_set_carrier(client, MSP_CARRIER(10.7),
					    MSP_CARRIER(10.7));
			break;
		case 0x0002:
		case 0x0003:
		case 0x0004:
		case 0x0005:
			state->mode = MSP_MODE_FM_TERRA;
			state->watch_stereo = 1;
			break;
		}

		/* set various prescales */
		msp_write_dsp(client, 0x0d, 0x1900); /* scart */
		msp_write_dsp(client, 0x0e, 0x3000); /* FM */
		if (state->has_nicam)
			msp_write_dsp(client, 0x10, 0x5a00); /* nicam */

		if (state->has_i2s_conf)
			msp_write_dem(client, 0x40, state->i2s_mode);

		/* unmute */
		msp3400c_set_audmode(client);
		state->scan_in_progress = 0;
		msp_update_volume(state);

		/* monitor tv audio mode, the first time don't wait
		   so long to get a quick stereo/bilingual result */
		count = 3;
		while (state->watch_stereo) {
			if (msp_sleep(state, count ? 1000 : 5000))
				goto restart;
			if (count)
				count--;
			watch_stereo(client);
		}
	}
	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
	return 0;
}

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

/* msp34xxG + (autoselect no-thread)
 * this one uses both automatic standard detection and automatic sound
 * select which are available in the newer G versions
 * struct msp: only norm, acb and source are really used in this mode
 */

static int msp34xxg_modus(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	if (state->radio) {
		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n");
		return 0x0001;
	}
	if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n");
		return 0x4001;
	}
	if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n");
		return 0x0001;
	}
	if (state->v4l2_std == V4L2_STD_SECAM_L) {
		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n");
		return 0x6001;
	}
	if (state->v4l2_std & V4L2_STD_MN) {
		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (BTSC) modus\n");
		return 0x2001;
	}
	return 0x7001;
}

static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	int source, matrix;

	switch (state->audmode) {
	case V4L2_TUNER_MODE_MONO:
		source = 0; /* mono only */
		matrix = 0x30;
		break;
	case V4L2_TUNER_MODE_LANG2:
		source = 4; /* stereo or B */
		matrix = 0x10;
		break;
	case V4L2_TUNER_MODE_LANG1_LANG2:
		source = 1; /* stereo or A|B */
		matrix = 0x20;
		break;
	case V4L2_TUNER_MODE_LANG1:
		source = 3; /* stereo or A */
		matrix = 0x00;
		break;
	case V4L2_TUNER_MODE_STEREO:
	default:
		source = 3; /* stereo or A */
		matrix = 0x20;
		break;
	}

	if (in == MSP_DSP_IN_TUNER)
		source = (source << 8) | 0x20;
	/* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
	   instead of 11, 12, 13. So we add one for that msp version. */
	else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
		source = ((in + 1) << 8) | matrix;
	else
		source = (in << 8) | matrix;

	dev_dbg_lvl(&client->dev, 1, msp_debug,
		"set source to %d (0x%x) for output %02x\n", in, source, reg);
	msp_write_dsp(client, reg, source);
}

static void msp34xxg_set_sources(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	u32 in = state->route_in;

	msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
	/* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
	msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
	msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
	msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
	if (state->has_scart2_out)
		msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
	msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
}

/* (re-)initialize the msp34xxg */
static void msp34xxg_reset(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	int tuner = (state->route_in >> 3) & 1;
	int modus;

	/* initialize std to 1 (autodetect) to signal that no standard is
	   selected yet. */
	state->std = 1;

	msp_reset(client);

	if (state->has_i2s_conf)
		msp_write_dem(client, 0x40, state->i2s_mode);

	/* step-by-step initialisation, as described in the manual */
	modus = msp34xxg_modus(client);
	modus |= tuner ? 0x100 : 0;
	msp_write_dem(client, 0x30, modus);

	/* write the dsps that may have an influence on
	   standard/audio autodetection right now */
	msp34xxg_set_sources(client);

	msp_write_dsp(client, 0x0d, 0x1900); /* scart */
	msp_write_dsp(client, 0x0e, 0x3000); /* FM */
	if (state->has_nicam)
		msp_write_dsp(client, 0x10, 0x5a00); /* nicam */

	/* set identification threshold. Personally, I
	 * I set it to a higher value than the default
	 * of 0x190 to ignore noisy stereo signals.
	 * this needs tuning. (recommended range 0x00a0-0x03c0)
	 * 0x7f0 = forced mono mode
	 *
	 * a2 threshold for stereo/bilingual.
	 * Note: this register is part of the Manual/Compatibility mode.
	 * It is supported by all 'G'-family chips.
	 */
	msp_write_dem(client, 0x22, msp_stereo_thresh);
}

int msp34xxg_thread(void *data)
{
	struct i2c_client *client = data;
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	int val, i;

	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n");
	state->detected_std = V4L2_STD_ALL;
	set_freezable();
	for (;;) {
		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n");
		msp_sleep(state, -1);
		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n");

restart:
		dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n");
		state->restart = 0;
		if (kthread_should_stop())
			break;

		if (state->mode == MSP_MODE_EXTERN) {
			/* no carrier scan needed, just unmute */
			dev_dbg_lvl(&client->dev, 1, msp_debug,
				"thread: no carrier scan\n");
			state->scan_in_progress = 0;
			msp_update_volume(state);
			continue;
		}

		/* setup the chip*/
		msp34xxg_reset(client);
		state->std = state->radio ? 0x40 :
			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
		msp_write_dem(client, 0x20, state->std);
		/* start autodetect */
		if (state->std != 1)
			goto unmute;

		/* watch autodetect */
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"started autodetect, waiting for result\n");
		for (i = 0; i < 10; i++) {
			if (msp_sleep(state, 100))
				goto restart;

			/* check results */
			val = msp_read_dem(client, 0x7e);
			if (val < 0x07ff) {
				state->std = val;
				break;
			}
			dev_dbg_lvl(&client->dev, 2, msp_debug,
				"detection still in progress\n");
		}
		if (state->std == 1) {
			dev_dbg_lvl(&client->dev, 1, msp_debug,
				"detection still in progress after 10 tries. giving up.\n");
			continue;
		}

unmute:
		dev_dbg_lvl(&client->dev, 1, msp_debug,
			"detected standard: %s (0x%04x)\n",
			msp_standard_std_name(state->std), state->std);
		state->detected_std = msp_standard_std(state->std);

		if (state->std == 9) {
			/* AM NICAM mode */
			msp_write_dsp(client, 0x0e, 0x7c00);
		}

		/* unmute: dispatch sound to scart output, set scart volume */
		msp_update_volume(state);

		/* restore ACB */
		if (msp_write_dsp(client, 0x13, state->acb))
			return -1;

		/* the periodic stereo/SAP check is only relevant for
		   the 0x20 standard (BTSC) */
		if (state->std != 0x20)
			continue;

		state->watch_stereo = 1;

		/* monitor tv audio mode, the first time don't wait
		   in order to get a quick stereo/SAP update */
		watch_stereo(client);
		while (state->watch_stereo) {
			watch_stereo(client);
			if (msp_sleep(state, 5000))
				goto restart;
		}
	}
	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
	return 0;
}

static int msp34xxg_detect_stereo(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));
	int status = msp_read_dem(client, 0x0200);
	int is_bilingual = status & 0x100;
	int is_stereo = status & 0x40;
	int oldrx = state->rxsubchans;

	if (state->mode == MSP_MODE_EXTERN)
		return 0;

	state->rxsubchans = 0;
	if (is_stereo)
		state->rxsubchans = V4L2_TUNER_SUB_STEREO;
	else
		state->rxsubchans = V4L2_TUNER_SUB_MONO;
	if (is_bilingual) {
		if (state->std == 0x20)
			state->rxsubchans |= V4L2_TUNER_SUB_SAP;
		else
			state->rxsubchans =
				V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
	}
	dev_dbg_lvl(&client->dev, 1, msp_debug,
		"status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
		status, is_stereo, is_bilingual, state->rxsubchans);
	return (oldrx != state->rxsubchans);
}

static void msp34xxg_set_audmode(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	if (state->std == 0x20) {
	       if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
		   (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
		    state->audmode == V4L2_TUNER_MODE_LANG2)) {
			msp_write_dem(client, 0x20, 0x21);
	       } else {
			msp_write_dem(client, 0x20, 0x20);
	       }
	}

	msp34xxg_set_sources(client);
}

void msp_set_audmode(struct i2c_client *client)
{
	struct msp_state *state = to_state(i2c_get_clientdata(client));

	switch (state->opmode) {
	case OPMODE_MANUAL:
	case OPMODE_AUTODETECT:
		msp3400c_set_audmode(client);
		break;
	case OPMODE_AUTOSELECT:
		msp34xxg_set_audmode(client);
		break;
	}
}

int msp_detect_stereo(struct i2c_client *client)
{
	struct msp_state *state  = to_state(i2c_get_clientdata(client));

	switch (state->opmode) {
	case OPMODE_MANUAL:
	case OPMODE_AUTODETECT:
		return msp3400c_detect_stereo(client);
	case OPMODE_AUTOSELECT:
		return msp34xxg_detect_stereo(client);
	}
	return 0;
}