summaryrefslogtreecommitdiff
path: root/sound/i2c/other/ak4xxx-adda.c
blob: 5f59316f982aec71f89de6d1bc91f18f5e7d3c39 (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
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA driver for AK4524 / AK4528 / AK4529 / AK4355 / AK4358 / AK4381
 *   AD and DA converters
 *
 *	Copyright (c) 2000-2004 Jaroslav Kysela <perex@perex.cz>,
 *				Takashi Iwai <tiwai@suse.de>
 */

#include <linux/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/ak4xxx-adda.h>
#include <sound/info.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("Routines for control of AK452x / AK43xx  AD/DA converters");
MODULE_LICENSE("GPL");

/* write the given register and save the data to the cache */
void snd_akm4xxx_write(struct snd_akm4xxx *ak, int chip, unsigned char reg,
		       unsigned char val)
{
	ak->ops.lock(ak, chip);
	ak->ops.write(ak, chip, reg, val);

	/* save the data */
	snd_akm4xxx_set(ak, chip, reg, val);
	ak->ops.unlock(ak, chip);
}

EXPORT_SYMBOL(snd_akm4xxx_write);

/* reset procedure for AK4524 and AK4528 */
static void ak4524_reset(struct snd_akm4xxx *ak, int state)
{
	unsigned int chip;
	unsigned char reg;

	for (chip = 0; chip < ak->num_dacs/2; chip++) {
		snd_akm4xxx_write(ak, chip, 0x01, state ? 0x00 : 0x03);
		if (state)
			continue;
		/* DAC volumes */
		for (reg = 0x04; reg < ak->total_regs; reg++)
			snd_akm4xxx_write(ak, chip, reg,
					  snd_akm4xxx_get(ak, chip, reg));
	}
}

/* reset procedure for AK4355 and AK4358 */
static void ak435X_reset(struct snd_akm4xxx *ak, int state)
{
	unsigned char reg;

	if (state) {
		snd_akm4xxx_write(ak, 0, 0x01, 0x02); /* reset and soft-mute */
		return;
	}
	for (reg = 0x00; reg < ak->total_regs; reg++)
		if (reg != 0x01)
			snd_akm4xxx_write(ak, 0, reg,
					  snd_akm4xxx_get(ak, 0, reg));
	snd_akm4xxx_write(ak, 0, 0x01, 0x01); /* un-reset, unmute */
}

/* reset procedure for AK4381 */
static void ak4381_reset(struct snd_akm4xxx *ak, int state)
{
	unsigned int chip;
	unsigned char reg;
	for (chip = 0; chip < ak->num_dacs/2; chip++) {
		snd_akm4xxx_write(ak, chip, 0x00, state ? 0x0c : 0x0f);
		if (state)
			continue;
		for (reg = 0x01; reg < ak->total_regs; reg++)
			snd_akm4xxx_write(ak, chip, reg,
					  snd_akm4xxx_get(ak, chip, reg));
	}
}

/*
 * reset the AKM codecs
 * @state: 1 = reset codec, 0 = restore the registers
 *
 * assert the reset operation and restores the register values to the chips.
 */
void snd_akm4xxx_reset(struct snd_akm4xxx *ak, int state)
{
	switch (ak->type) {
	case SND_AK4524:
	case SND_AK4528:
	case SND_AK4620:
		ak4524_reset(ak, state);
		break;
	case SND_AK4529:
		/* FIXME: needed for ak4529? */
		break;
	case SND_AK4355:
		ak435X_reset(ak, state);
		break;
	case SND_AK4358:
		ak435X_reset(ak, state);
		break;
	case SND_AK4381:
		ak4381_reset(ak, state);
		break;
	default:
		break;
	}
}

EXPORT_SYMBOL(snd_akm4xxx_reset);


/*
 * Volume conversion table for non-linear volumes
 * from -63.5dB (mute) to 0dB step 0.5dB
 *
 * Used for AK4524/AK4620 input/ouput attenuation, AK4528, and
 * AK5365 input attenuation
 */
static const unsigned char vol_cvt_datt[128] = {
	0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, 0x04,
	0x04, 0x04, 0x04, 0x05, 0x05, 0x05, 0x06, 0x06,
	0x06, 0x07, 0x07, 0x08, 0x08, 0x08, 0x09, 0x0a,
	0x0a, 0x0b, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x0f,
	0x10, 0x10, 0x11, 0x12, 0x12, 0x13, 0x13, 0x14,
	0x15, 0x16, 0x17, 0x17, 0x18, 0x19, 0x1a, 0x1c,
	0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x23,
	0x24, 0x25, 0x26, 0x28, 0x29, 0x2a, 0x2b, 0x2d,
	0x2e, 0x30, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
	0x37, 0x38, 0x39, 0x3b, 0x3c, 0x3e, 0x3f, 0x40,
	0x41, 0x42, 0x43, 0x44, 0x46, 0x47, 0x48, 0x4a,
	0x4b, 0x4d, 0x4e, 0x50, 0x51, 0x52, 0x53, 0x54,
	0x55, 0x56, 0x58, 0x59, 0x5b, 0x5c, 0x5e, 0x5f,
	0x60, 0x61, 0x62, 0x64, 0x65, 0x66, 0x67, 0x69,
	0x6a, 0x6c, 0x6d, 0x6f, 0x70, 0x71, 0x72, 0x73,
	0x75, 0x76, 0x77, 0x79, 0x7a, 0x7c, 0x7d, 0x7f,
};

/*
 * dB tables
 */
static const DECLARE_TLV_DB_SCALE(db_scale_vol_datt, -6350, 50, 1);
static const DECLARE_TLV_DB_SCALE(db_scale_8bit, -12750, 50, 1);
static const DECLARE_TLV_DB_SCALE(db_scale_7bit, -6350, 50, 1);
static const DECLARE_TLV_DB_LINEAR(db_scale_linear, TLV_DB_GAIN_MUTE, 0);

/*
 * initialize all the ak4xxx chips
 */
void snd_akm4xxx_init(struct snd_akm4xxx *ak)
{
	static const unsigned char inits_ak4524[] = {
		0x00, 0x07, /* 0: all power up */
		0x01, 0x00, /* 1: ADC/DAC reset */
		0x02, 0x60, /* 2: 24bit I2S */
		0x03, 0x19, /* 3: deemphasis off */
		0x01, 0x03, /* 1: ADC/DAC enable */
		0x04, 0x00, /* 4: ADC left muted */
		0x05, 0x00, /* 5: ADC right muted */
		0x06, 0x00, /* 6: DAC left muted */
		0x07, 0x00, /* 7: DAC right muted */
		0xff, 0xff
	};
	static const unsigned char inits_ak4528[] = {
		0x00, 0x07, /* 0: all power up */
		0x01, 0x00, /* 1: ADC/DAC reset */
		0x02, 0x60, /* 2: 24bit I2S */
		0x03, 0x0d, /* 3: deemphasis off, turn LR highpass filters on */
		0x01, 0x03, /* 1: ADC/DAC enable */
		0x04, 0x00, /* 4: ADC left muted */
		0x05, 0x00, /* 5: ADC right muted */
		0xff, 0xff
	};
	static const unsigned char inits_ak4529[] = {
		0x09, 0x01, /* 9: ATS=0, RSTN=1 */
		0x0a, 0x3f, /* A: all power up, no zero/overflow detection */
		0x00, 0x0c, /* 0: TDM=0, 24bit I2S, SMUTE=0 */
		0x01, 0x00, /* 1: ACKS=0, ADC, loop off */
		0x02, 0xff, /* 2: LOUT1 muted */
		0x03, 0xff, /* 3: ROUT1 muted */
		0x04, 0xff, /* 4: LOUT2 muted */
		0x05, 0xff, /* 5: ROUT2 muted */
		0x06, 0xff, /* 6: LOUT3 muted */
		0x07, 0xff, /* 7: ROUT3 muted */
		0x0b, 0xff, /* B: LOUT4 muted */
		0x0c, 0xff, /* C: ROUT4 muted */
		0x08, 0x55, /* 8: deemphasis all off */
		0xff, 0xff
	};
	static const unsigned char inits_ak4355[] = {
		0x01, 0x02, /* 1: reset and soft-mute */
		0x00, 0x06, /* 0: mode3(i2s), disable auto-clock detect,
			     * disable DZF, sharp roll-off, RSTN#=0 */
		0x02, 0x0e, /* 2: DA's power up, normal speed, RSTN#=0 */
		// 0x02, 0x2e, /* quad speed */
		0x03, 0x01, /* 3: de-emphasis off */
		0x04, 0x00, /* 4: LOUT1 volume muted */
		0x05, 0x00, /* 5: ROUT1 volume muted */
		0x06, 0x00, /* 6: LOUT2 volume muted */
		0x07, 0x00, /* 7: ROUT2 volume muted */
		0x08, 0x00, /* 8: LOUT3 volume muted */
		0x09, 0x00, /* 9: ROUT3 volume muted */
		0x0a, 0x00, /* a: DATT speed=0, ignore DZF */
		0x01, 0x01, /* 1: un-reset, unmute */
		0xff, 0xff
	};
	static const unsigned char inits_ak4358[] = {
		0x01, 0x02, /* 1: reset and soft-mute */
		0x00, 0x06, /* 0: mode3(i2s), disable auto-clock detect,
			     * disable DZF, sharp roll-off, RSTN#=0 */
		0x02, 0x4e, /* 2: DA's power up, normal speed, RSTN#=0 */
		/* 0x02, 0x6e,*/ /* quad speed */
		0x03, 0x01, /* 3: de-emphasis off */
		0x04, 0x00, /* 4: LOUT1 volume muted */
		0x05, 0x00, /* 5: ROUT1 volume muted */
		0x06, 0x00, /* 6: LOUT2 volume muted */
		0x07, 0x00, /* 7: ROUT2 volume muted */
		0x08, 0x00, /* 8: LOUT3 volume muted */
		0x09, 0x00, /* 9: ROUT3 volume muted */
		0x0b, 0x00, /* b: LOUT4 volume muted */
		0x0c, 0x00, /* c: ROUT4 volume muted */
		0x0a, 0x00, /* a: DATT speed=0, ignore DZF */
		0x01, 0x01, /* 1: un-reset, unmute */
		0xff, 0xff
	};
	static const unsigned char inits_ak4381[] = {
		0x00, 0x0c, /* 0: mode3(i2s), disable auto-clock detect */
		0x01, 0x02, /* 1: de-emphasis off, normal speed,
			     * sharp roll-off, DZF off */
		// 0x01, 0x12, /* quad speed */
		0x02, 0x00, /* 2: DZF disabled */
		0x03, 0x00, /* 3: LATT 0 */
		0x04, 0x00, /* 4: RATT 0 */
		0x00, 0x0f, /* 0: power-up, un-reset */
		0xff, 0xff
	};
	static const unsigned char inits_ak4620[] = {
		0x00, 0x07, /* 0: normal */
		0x01, 0x00, /* 0: reset */
		0x01, 0x02, /* 1: RSTAD */
		0x01, 0x03, /* 1: RSTDA */
		0x01, 0x0f, /* 1: normal */
		0x02, 0x60, /* 2: 24bit I2S */
		0x03, 0x01, /* 3: deemphasis off */
		0x04, 0x00, /* 4: LIN muted */
		0x05, 0x00, /* 5: RIN muted */
		0x06, 0x00, /* 6: LOUT muted */
		0x07, 0x00, /* 7: ROUT muted */
		0xff, 0xff
	};

	int chip;
	const unsigned char *ptr, *inits;
	unsigned char reg, data;

	memset(ak->images, 0, sizeof(ak->images));
	memset(ak->volumes, 0, sizeof(ak->volumes));

	switch (ak->type) {
	case SND_AK4524:
		inits = inits_ak4524;
		ak->num_chips = ak->num_dacs / 2;
		ak->name = "ak4524";
		ak->total_regs = 0x08;
		break;
	case SND_AK4528:
		inits = inits_ak4528;
		ak->num_chips = ak->num_dacs / 2;
		ak->name = "ak4528";
		ak->total_regs = 0x06;
		break;
	case SND_AK4529:
		inits = inits_ak4529;
		ak->num_chips = 1;
		ak->name = "ak4529";
		ak->total_regs = 0x0d;
		break;
	case SND_AK4355:
		inits = inits_ak4355;
		ak->num_chips = 1;
		ak->name = "ak4355";
		ak->total_regs = 0x0b;
		break;
	case SND_AK4358:
		inits = inits_ak4358;
		ak->num_chips = 1;
		ak->name = "ak4358";
		ak->total_regs = 0x10;
		break;
	case SND_AK4381:
		inits = inits_ak4381;
		ak->num_chips = ak->num_dacs / 2;
		ak->name = "ak4381";
		ak->total_regs = 0x05;
		break;
	case SND_AK5365:
		/* FIXME: any init sequence? */
		ak->num_chips = 1;
		ak->name = "ak5365";
		ak->total_regs = 0x08;
		return;
	case SND_AK4620:
		inits = inits_ak4620;
		ak->num_chips = ak->num_dacs / 2;
		ak->name = "ak4620";
		ak->total_regs = 0x08;
		break;
	default:
		snd_BUG();
		return;
	}

	for (chip = 0; chip < ak->num_chips; chip++) {
		ptr = inits;
		while (*ptr != 0xff) {
			reg = *ptr++;
			data = *ptr++;
			snd_akm4xxx_write(ak, chip, reg, data);
			udelay(10);
		}
	}
}

EXPORT_SYMBOL(snd_akm4xxx_init);

/*
 * Mixer callbacks
 */
#define AK_IPGA 			(1<<20)	/* including IPGA */
#define AK_VOL_CVT 			(1<<21)	/* need dB conversion */
#define AK_NEEDSMSB 			(1<<22)	/* need MSB update bit */
#define AK_INVERT 			(1<<23)	/* data is inverted */
#define AK_GET_CHIP(val)		(((val) >> 8) & 0xff)
#define AK_GET_ADDR(val)		((val) & 0xff)
#define AK_GET_SHIFT(val)		(((val) >> 16) & 0x0f)
#define AK_GET_VOL_CVT(val)		(((val) >> 21) & 1)
#define AK_GET_IPGA(val)		(((val) >> 20) & 1)
#define AK_GET_NEEDSMSB(val)		(((val) >> 22) & 1)
#define AK_GET_INVERT(val)		(((val) >> 23) & 1)
#define AK_GET_MASK(val)		(((val) >> 24) & 0xff)
#define AK_COMPOSE(chip,addr,shift,mask) \
	(((chip) << 8) | (addr) | ((shift) << 16) | ((mask) << 24))

static int snd_akm4xxx_volume_info(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_info *uinfo)
{
	unsigned int mask = AK_GET_MASK(kcontrol->private_value);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_akm4xxx_volume_get(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);

	ucontrol->value.integer.value[0] = snd_akm4xxx_get_vol(ak, chip, addr);
	return 0;
}

static int put_ak_reg(struct snd_kcontrol *kcontrol, int addr,
		      unsigned char nval)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	unsigned int mask = AK_GET_MASK(kcontrol->private_value);
	int chip = AK_GET_CHIP(kcontrol->private_value);

	if (snd_akm4xxx_get_vol(ak, chip, addr) == nval)
		return 0;

	snd_akm4xxx_set_vol(ak, chip, addr, nval);
	if (AK_GET_VOL_CVT(kcontrol->private_value) && nval < 128)
		nval = vol_cvt_datt[nval];
	if (AK_GET_IPGA(kcontrol->private_value) && nval >= 128)
		nval++; /* need to correct + 1 since both 127 and 128 are 0dB */
	if (AK_GET_INVERT(kcontrol->private_value))
		nval = mask - nval;
	if (AK_GET_NEEDSMSB(kcontrol->private_value))
		nval |= 0x80;
	/* printk(KERN_DEBUG "DEBUG - AK writing reg: chip %x addr %x,
	   nval %x\n", chip, addr, nval); */
	snd_akm4xxx_write(ak, chip, addr, nval);
	return 1;
}

static int snd_akm4xxx_volume_put(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	unsigned int mask = AK_GET_MASK(kcontrol->private_value);
	unsigned int val = ucontrol->value.integer.value[0];
	if (val > mask)
		return -EINVAL;
	return put_ak_reg(kcontrol, AK_GET_ADDR(kcontrol->private_value), val);
}

static int snd_akm4xxx_stereo_volume_info(struct snd_kcontrol *kcontrol,
					  struct snd_ctl_elem_info *uinfo)
{
	unsigned int mask = AK_GET_MASK(kcontrol->private_value);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_akm4xxx_stereo_volume_get(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);

	ucontrol->value.integer.value[0] = snd_akm4xxx_get_vol(ak, chip, addr);
	ucontrol->value.integer.value[1] = snd_akm4xxx_get_vol(ak, chip, addr+1);
	return 0;
}

static int snd_akm4xxx_stereo_volume_put(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{
	int addr = AK_GET_ADDR(kcontrol->private_value);
	unsigned int mask = AK_GET_MASK(kcontrol->private_value);
	unsigned int val[2];
	int change;

	val[0] = ucontrol->value.integer.value[0];
	val[1] = ucontrol->value.integer.value[1];
	if (val[0] > mask || val[1] > mask)
		return -EINVAL;
	change = put_ak_reg(kcontrol, addr, val[0]);
	change |= put_ak_reg(kcontrol, addr + 1, val[1]);
	return change;
}

static int snd_akm4xxx_deemphasis_info(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_info *uinfo)
{
	static const char * const texts[4] = {
		"44.1kHz", "Off", "48kHz", "32kHz",
	};
	return snd_ctl_enum_info(uinfo, 1, 4, texts);
}

static int snd_akm4xxx_deemphasis_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	ucontrol->value.enumerated.item[0] =
		(snd_akm4xxx_get(ak, chip, addr) >> shift) & 3;
	return 0;
}

static int snd_akm4xxx_deemphasis_put(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	unsigned char nval = ucontrol->value.enumerated.item[0] & 3;
	int change;
	
	nval = (nval << shift) |
		(snd_akm4xxx_get(ak, chip, addr) & ~(3 << shift));
	change = snd_akm4xxx_get(ak, chip, addr) != nval;
	if (change)
		snd_akm4xxx_write(ak, chip, addr, nval);
	return change;
}

#define ak4xxx_switch_info	snd_ctl_boolean_mono_info

static int ak4xxx_switch_get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	int invert = AK_GET_INVERT(kcontrol->private_value);
	/* we observe the (1<<shift) bit only */
	unsigned char val = snd_akm4xxx_get(ak, chip, addr) & (1<<shift);
	if (invert)
		val = ! val;
	ucontrol->value.integer.value[0] = (val & (1<<shift)) != 0;
	return 0;
}

static int ak4xxx_switch_put(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	int invert = AK_GET_INVERT(kcontrol->private_value);
	long flag = ucontrol->value.integer.value[0];
	unsigned char val, oval;
	int change;

	if (invert)
		flag = ! flag;
	oval = snd_akm4xxx_get(ak, chip, addr);
	if (flag)
		val = oval | (1<<shift);
	else
		val = oval & ~(1<<shift);
	change = (oval != val);
	if (change)
		snd_akm4xxx_write(ak, chip, addr, val);
	return change;
}

#define AK5365_NUM_INPUTS 5

static int ak4xxx_capture_num_inputs(struct snd_akm4xxx *ak, int mixer_ch)
{
	int num_names;
	const char **input_names;

	input_names = ak->adc_info[mixer_ch].input_names;
	num_names = 0;
	while (num_names < AK5365_NUM_INPUTS && input_names[num_names])
		++num_names;
	return num_names;
}

static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_info *uinfo)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int mixer_ch = AK_GET_SHIFT(kcontrol->private_value);
	unsigned int num_names;

	num_names = ak4xxx_capture_num_inputs(ak, mixer_ch);
	if (!num_names)
		return -EINVAL;
	return snd_ctl_enum_info(uinfo, 1, num_names,
				 ak->adc_info[mixer_ch].input_names);
}

static int ak4xxx_capture_source_get(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int mask = AK_GET_MASK(kcontrol->private_value);
	unsigned char val;

	val = snd_akm4xxx_get(ak, chip, addr) & mask;
	ucontrol->value.enumerated.item[0] = val;
	return 0;
}

static int ak4xxx_capture_source_put(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int mixer_ch = AK_GET_SHIFT(kcontrol->private_value);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int mask = AK_GET_MASK(kcontrol->private_value);
	unsigned char oval, val;
	int num_names = ak4xxx_capture_num_inputs(ak, mixer_ch);

	if (ucontrol->value.enumerated.item[0] >= num_names)
		return -EINVAL;

	oval = snd_akm4xxx_get(ak, chip, addr);
	val = oval & ~mask;
	val |= ucontrol->value.enumerated.item[0] & mask;
	if (val != oval) {
		snd_akm4xxx_write(ak, chip, addr, val);
		return 1;
	}
	return 0;
}

/*
 * build AK4xxx controls
 */

static int build_dac_controls(struct snd_akm4xxx *ak)
{
	int idx, err, mixer_ch, num_stereo;
	struct snd_kcontrol_new knew;

	mixer_ch = 0;
	for (idx = 0; idx < ak->num_dacs; ) {
		/* mute control for Revolution 7.1 - AK4381 */
		if (ak->type == SND_AK4381 
				&&  ak->dac_info[mixer_ch].switch_name) {
			memset(&knew, 0, sizeof(knew));
			knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
			knew.count = 1;
			knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
			knew.name = ak->dac_info[mixer_ch].switch_name;
			knew.info = ak4xxx_switch_info;
			knew.get = ak4xxx_switch_get;
			knew.put = ak4xxx_switch_put;
			knew.access = 0;
			/* register 1, bit 0 (SMUTE): 0 = normal operation,
			   1 = mute */
			knew.private_value =
				AK_COMPOSE(idx/2, 1, 0, 0) | AK_INVERT;
			err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
			if (err < 0)
				return err;
		}
		memset(&knew, 0, sizeof(knew));
		if (! ak->dac_info || ! ak->dac_info[mixer_ch].name) {
			knew.name = "DAC Volume";
			knew.index = mixer_ch + ak->idx_offset * 2;
			num_stereo = 1;
		} else {
			knew.name = ak->dac_info[mixer_ch].name;
			num_stereo = ak->dac_info[mixer_ch].num_channels;
		}
		knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		knew.count = 1;
		knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ;
		if (num_stereo == 2) {
			knew.info = snd_akm4xxx_stereo_volume_info;
			knew.get = snd_akm4xxx_stereo_volume_get;
			knew.put = snd_akm4xxx_stereo_volume_put;
		} else {
			knew.info = snd_akm4xxx_volume_info;
			knew.get = snd_akm4xxx_volume_get;
			knew.put = snd_akm4xxx_volume_put;
		}
		switch (ak->type) {
		case SND_AK4524:
			/* register 6 & 7 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 6, 0, 127) |
				AK_VOL_CVT;
			knew.tlv.p = db_scale_vol_datt;
			break;
		case SND_AK4528:
			/* register 4 & 5 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 4, 0, 127) |
				AK_VOL_CVT;
			knew.tlv.p = db_scale_vol_datt;
			break;
		case SND_AK4529: {
			/* registers 2-7 and b,c */
			int val = idx < 6 ? idx + 2 : (idx - 6) + 0xb;
			knew.private_value =
				AK_COMPOSE(0, val, 0, 255) | AK_INVERT;
			knew.tlv.p = db_scale_8bit;
			break;
		}
		case SND_AK4355:
			/* register 4-9, chip #0 only */
			knew.private_value = AK_COMPOSE(0, idx + 4, 0, 255);
			knew.tlv.p = db_scale_8bit;
			break;
		case SND_AK4358: {
			/* register 4-9 and 11-12, chip #0 only */
			int  addr = idx < 6 ? idx + 4 : idx + 5;
			knew.private_value =
				AK_COMPOSE(0, addr, 0, 127) | AK_NEEDSMSB;
			knew.tlv.p = db_scale_7bit;
			break;
		}
		case SND_AK4381:
			/* register 3 & 4 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 3, 0, 255);
			knew.tlv.p = db_scale_linear;
			break;
		case SND_AK4620:
			/* register 6 & 7 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 6, 0, 255);
			knew.tlv.p = db_scale_linear;
			break;
		default:
			return -EINVAL;
		}

		err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
		if (err < 0)
			return err;

		idx += num_stereo;
		mixer_ch++;
	}
	return 0;
}

static int build_adc_controls(struct snd_akm4xxx *ak)
{
	int idx, err, mixer_ch, num_stereo, max_steps;
	struct snd_kcontrol_new knew;

	mixer_ch = 0;
	if (ak->type == SND_AK4528)
		return 0;	/* no controls */
	for (idx = 0; idx < ak->num_adcs;) {
		memset(&knew, 0, sizeof(knew));
		if (! ak->adc_info || ! ak->adc_info[mixer_ch].name) {
			knew.name = "ADC Volume";
			knew.index = mixer_ch + ak->idx_offset * 2;
			num_stereo = 1;
		} else {
			knew.name = ak->adc_info[mixer_ch].name;
			num_stereo = ak->adc_info[mixer_ch].num_channels;
		}
		knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		knew.count = 1;
		knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ;
		if (num_stereo == 2) {
			knew.info = snd_akm4xxx_stereo_volume_info;
			knew.get = snd_akm4xxx_stereo_volume_get;
			knew.put = snd_akm4xxx_stereo_volume_put;
		} else {
			knew.info = snd_akm4xxx_volume_info;
			knew.get = snd_akm4xxx_volume_get;
			knew.put = snd_akm4xxx_volume_put;
		}
		/* register 4 & 5 */
		if (ak->type == SND_AK5365)
			max_steps = 152;
		else
			max_steps = 164;
		knew.private_value =
			AK_COMPOSE(idx/2, (idx%2) + 4, 0, max_steps) |
			AK_VOL_CVT | AK_IPGA;
		knew.tlv.p = db_scale_vol_datt;
		err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
		if (err < 0)
			return err;

		if (ak->type == SND_AK5365 && (idx % 2) == 0) {
			if (! ak->adc_info || 
			    ! ak->adc_info[mixer_ch].switch_name) {
				knew.name = "Capture Switch";
				knew.index = mixer_ch + ak->idx_offset * 2;
			} else
				knew.name = ak->adc_info[mixer_ch].switch_name;
			knew.info = ak4xxx_switch_info;
			knew.get = ak4xxx_switch_get;
			knew.put = ak4xxx_switch_put;
			knew.access = 0;
			/* register 2, bit 0 (SMUTE): 0 = normal operation,
			   1 = mute */
			knew.private_value =
				AK_COMPOSE(idx/2, 2, 0, 0) | AK_INVERT;
			err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
			if (err < 0)
				return err;

			memset(&knew, 0, sizeof(knew));
			knew.name = ak->adc_info[mixer_ch].selector_name;
			if (!knew.name) {
				knew.name = "Capture Channel";
				knew.index = mixer_ch + ak->idx_offset * 2;
			}

			knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
			knew.info = ak4xxx_capture_source_info;
			knew.get = ak4xxx_capture_source_get;
			knew.put = ak4xxx_capture_source_put;
			knew.access = 0;
			/* input selector control: reg. 1, bits 0-2.
			 * mis-use 'shift' to pass mixer_ch */
			knew.private_value
				= AK_COMPOSE(idx/2, 1, mixer_ch, 0x07);
			err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
			if (err < 0)
				return err;
		}

		idx += num_stereo;
		mixer_ch++;
	}
	return 0;
}

static int build_deemphasis(struct snd_akm4xxx *ak, int num_emphs)
{
	int idx, err;
	struct snd_kcontrol_new knew;

	for (idx = 0; idx < num_emphs; idx++) {
		memset(&knew, 0, sizeof(knew));
		knew.name = "Deemphasis";
		knew.index = idx + ak->idx_offset;
		knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		knew.count = 1;
		knew.info = snd_akm4xxx_deemphasis_info;
		knew.get = snd_akm4xxx_deemphasis_get;
		knew.put = snd_akm4xxx_deemphasis_put;
		switch (ak->type) {
		case SND_AK4524:
		case SND_AK4528:
		case SND_AK4620:
			/* register 3 */
			knew.private_value = AK_COMPOSE(idx, 3, 0, 0);
			break;
		case SND_AK4529: {
			int shift = idx == 3 ? 6 : (2 - idx) * 2;
			/* register 8 with shift */
			knew.private_value = AK_COMPOSE(0, 8, shift, 0);
			break;
		}
		case SND_AK4355:
		case SND_AK4358:
			knew.private_value = AK_COMPOSE(idx, 3, 0, 0);
			break;
		case SND_AK4381:
			knew.private_value = AK_COMPOSE(idx, 1, 1, 0);
			break;
		default:
			return -EINVAL;
		}
		err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
		if (err < 0)
			return err;
	}
	return 0;
}

static void proc_regs_read(struct snd_info_entry *entry,
		struct snd_info_buffer *buffer)
{
	struct snd_akm4xxx *ak = entry->private_data;
	int reg, val, chip;
	for (chip = 0; chip < ak->num_chips; chip++) {
		for (reg = 0; reg < ak->total_regs; reg++) {
			val =  snd_akm4xxx_get(ak, chip, reg);
			snd_iprintf(buffer, "chip %d: 0x%02x = 0x%02x\n", chip,
					reg, val);
		}
	}
}

static int proc_init(struct snd_akm4xxx *ak)
{
	return snd_card_ro_proc_new(ak->card, ak->name, ak, proc_regs_read);
}

int snd_akm4xxx_build_controls(struct snd_akm4xxx *ak)
{
	int err, num_emphs;

	err = build_dac_controls(ak);
	if (err < 0)
		return err;

	err = build_adc_controls(ak);
	if (err < 0)
		return err;
	if (ak->type == SND_AK4355 || ak->type == SND_AK4358)
		num_emphs = 1;
	else if (ak->type == SND_AK4620)
		num_emphs = 0;
	else
		num_emphs = ak->num_dacs / 2;
	err = build_deemphasis(ak, num_emphs);
	if (err < 0)
		return err;
	err = proc_init(ak);
	if (err < 0)
		return err;

	return 0;
}
EXPORT_SYMBOL(snd_akm4xxx_build_controls);