summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/tas571x.c
blob: a09499977be4d0ab4be645c41c6f0dcd614dcf71 (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
/*
 * TAS571x amplifier audio driver
 *
 * Copyright (C) 2015 Google, Inc.
 * Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
 *
 * TAS5721 support:
 * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com>
 *
 * 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.
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/stddef.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <asm/unaligned.h>

#include "tas571x.h"

#define TAS571X_MAX_SUPPLIES		6

struct tas571x_chip {
	const char			*const *supply_names;
	int				num_supply_names;
	const struct snd_kcontrol_new	*controls;
	int				num_controls;
	const struct regmap_config	*regmap_config;
	int				vol_reg_size;
};

struct tas571x_private {
	const struct tas571x_chip	*chip;
	struct regmap			*regmap;
	struct regulator_bulk_data	supplies[TAS571X_MAX_SUPPLIES];
	struct clk			*mclk;
	unsigned int			format;
	struct gpio_desc		*reset_gpio;
	struct gpio_desc		*pdn_gpio;
	struct snd_soc_codec_driver	codec_driver;
};

static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg)
{
	switch (reg) {
	case TAS571X_MVOL_REG:
	case TAS571X_CH1_VOL_REG:
	case TAS571X_CH2_VOL_REG:
		return priv->chip->vol_reg_size;
	case TAS571X_INPUT_MUX_REG:
	case TAS571X_CH4_SRC_SELECT_REG:
	case TAS571X_PWM_MUX_REG:
	case TAS5717_CH1_RIGHT_CH_MIX_REG:
	case TAS5717_CH1_LEFT_CH_MIX_REG:
	case TAS5717_CH2_LEFT_CH_MIX_REG:
	case TAS5717_CH2_RIGHT_CH_MIX_REG:
		return 4;
	default:
		return 1;
	}
}

static int tas571x_reg_write(void *context, unsigned int reg,
			     unsigned int value)
{
	struct i2c_client *client = context;
	struct tas571x_private *priv = i2c_get_clientdata(client);
	unsigned int i, size;
	uint8_t buf[5];
	int ret;

	size = tas571x_register_size(priv, reg);
	buf[0] = reg;

	for (i = size; i >= 1; --i) {
		buf[i] = value;
		value >>= 8;
	}

	ret = i2c_master_send(client, buf, size + 1);
	if (ret == size + 1)
		return 0;
	else if (ret < 0)
		return ret;
	else
		return -EIO;
}

static int tas571x_reg_read(void *context, unsigned int reg,
			    unsigned int *value)
{
	struct i2c_client *client = context;
	struct tas571x_private *priv = i2c_get_clientdata(client);
	uint8_t send_buf, recv_buf[4];
	struct i2c_msg msgs[2];
	unsigned int size;
	unsigned int i;
	int ret;

	size = tas571x_register_size(priv, reg);
	send_buf = reg;

	msgs[0].addr = client->addr;
	msgs[0].len = sizeof(send_buf);
	msgs[0].buf = &send_buf;
	msgs[0].flags = 0;

	msgs[1].addr = client->addr;
	msgs[1].len = size;
	msgs[1].buf = recv_buf;
	msgs[1].flags = I2C_M_RD;

	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
	if (ret < 0)
		return ret;
	else if (ret != ARRAY_SIZE(msgs))
		return -EIO;

	*value = 0;

	for (i = 0; i < size; i++) {
		*value <<= 8;
		*value |= recv_buf[i];
	}

	return 0;
}

/*
 * register write for 8- and 20-byte registers
 */
static int tas571x_reg_write_multiword(struct i2c_client *client,
		unsigned int reg, const long values[], size_t len)
{
	size_t i;
	uint8_t *buf, *p;
	int ret;
	size_t send_size = 1 + len * sizeof(uint32_t);

	buf = kzalloc(send_size, GFP_KERNEL | GFP_DMA);
	if (!buf)
		return -ENOMEM;
	buf[0] = reg;

	for (i = 0, p = buf + 1; i < len; i++, p += sizeof(uint32_t))
		put_unaligned_be32(values[i], p);

	ret = i2c_master_send(client, buf, send_size);

	kfree(buf);

	if (ret == send_size)
		return 0;
	else if (ret < 0)
		return ret;
	else
		return -EIO;
}

/*
 * register read for 8- and 20-byte registers
 */
static int tas571x_reg_read_multiword(struct i2c_client *client,
		unsigned int reg, long values[], size_t len)
{
	unsigned int i;
	uint8_t send_buf;
	uint8_t *recv_buf, *p;
	struct i2c_msg msgs[2];
	unsigned int recv_size = len * sizeof(uint32_t);
	int ret;

	recv_buf = kzalloc(recv_size, GFP_KERNEL | GFP_DMA);
	if (!recv_buf)
		return -ENOMEM;

	send_buf = reg;

	msgs[0].addr = client->addr;
	msgs[0].len = sizeof(send_buf);
	msgs[0].buf = &send_buf;
	msgs[0].flags = 0;

	msgs[1].addr = client->addr;
	msgs[1].len = recv_size;
	msgs[1].buf = recv_buf;
	msgs[1].flags = I2C_M_RD;

	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
	if (ret < 0)
		goto err_ret;
	else if (ret != ARRAY_SIZE(msgs)) {
		ret = -EIO;
		goto err_ret;
	}

	for (i = 0, p = recv_buf; i < len; i++, p += sizeof(uint32_t))
		values[i] = get_unaligned_be32(p);

err_ret:
	kfree(recv_buf);
	return ret;
}

/*
 * Integer array controls for setting biquad, mixer, DRC coefficients.
 * According to the datasheet each coefficient is effectively 26bits,
 * i.e. stored as 32bits, where bits [31:26] are ignored.
 * TI's TAS57xx Graphical Development Environment tool however produces
 * coefficients with more than 26 bits. For this reason we allow values
 * in the full 32-bits reange.
 * The coefficients are ordered as given in the TAS571x data sheet:
 * b0, b1, b2, a1, a2
 */

static int tas571x_coefficient_info(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_info *uinfo)
{
	int numcoef = kcontrol->private_value >> 16;

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

static int tas571x_coefficient_get(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct i2c_client *i2c = to_i2c_client(codec->dev);
	int numcoef = kcontrol->private_value >> 16;
	int index = kcontrol->private_value & 0xffff;

	return tas571x_reg_read_multiword(i2c, index,
		ucontrol->value.integer.value, numcoef);
}

static int tas571x_coefficient_put(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct i2c_client *i2c = to_i2c_client(codec->dev);
	int numcoef = kcontrol->private_value >> 16;
	int index = kcontrol->private_value & 0xffff;

	return tas571x_reg_write_multiword(i2c, index,
		ucontrol->value.integer.value, numcoef);
}

static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
{
	struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);

	priv->format = format;

	return 0;
}

static int tas571x_hw_params(struct snd_pcm_substream *substream,
			     struct snd_pcm_hw_params *params,
			     struct snd_soc_dai *dai)
{
	struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
	u32 val;

	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_RIGHT_J:
		val = 0x00;
		break;
	case SND_SOC_DAIFMT_I2S:
		val = 0x03;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		val = 0x06;
		break;
	default:
		return -EINVAL;
	}

	if (params_width(params) >= 24)
		val += 2;
	else if (params_width(params) >= 20)
		val += 1;

	return regmap_update_bits(priv->regmap, TAS571X_SDI_REG,
				  TAS571X_SDI_FMT_MASK, val);
}

static int tas571x_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	u8 sysctl2;
	int ret;

	sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0;

	ret = snd_soc_update_bits(codec,
			    TAS571X_SYS_CTRL_2_REG,
		     TAS571X_SYS_CTRL_2_SDN_MASK,
		     sysctl2);
	usleep_range(1000, 2000);

	return ret;
}

static int tas571x_set_bias_level(struct snd_soc_codec *codec,
				  enum snd_soc_bias_level level)
{
	struct tas571x_private *priv = snd_soc_codec_get_drvdata(codec);
	int ret;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
			if (!IS_ERR(priv->mclk)) {
				ret = clk_prepare_enable(priv->mclk);
				if (ret) {
					dev_err(codec->dev,
						"Failed to enable master clock: %d\n",
						ret);
					return ret;
				}
			}
		}
		break;
	case SND_SOC_BIAS_OFF:
		if (!IS_ERR(priv->mclk))
			clk_disable_unprepare(priv->mclk);
		break;
	}

	return 0;
}

static const struct snd_soc_dai_ops tas571x_dai_ops = {
	.set_fmt	= tas571x_set_dai_fmt,
	.hw_params	= tas571x_hw_params,
	.digital_mute	= tas571x_mute,
};


#define BIQUAD_COEFS(xname, reg) \
{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
	.info = tas571x_coefficient_info, \
	.get = tas571x_coefficient_get,\
	.put = tas571x_coefficient_put, \
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
	.private_value = reg | (5 << 16) }

static const char *const tas5711_supply_names[] = {
	"AVDD",
	"DVDD",
	"PVDD_A",
	"PVDD_B",
	"PVDD_C",
	"PVDD_D",
};

static const DECLARE_TLV_DB_SCALE(tas5711_volume_tlv, -10350, 50, 1);

static const struct snd_kcontrol_new tas5711_controls[] = {
	SOC_SINGLE_TLV("Master Volume",
		       TAS571X_MVOL_REG,
		       0, 0xff, 1, tas5711_volume_tlv),
	SOC_DOUBLE_R_TLV("Speaker Volume",
			 TAS571X_CH1_VOL_REG,
			 TAS571X_CH2_VOL_REG,
			 0, 0xff, 1, tas5711_volume_tlv),
	SOC_DOUBLE("Speaker Switch",
		   TAS571X_SOFT_MUTE_REG,
		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
		   1, 1),
};

static const struct regmap_range tas571x_readonly_regs_range[] = {
	regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_DEV_ID_REG),
};

static const struct regmap_range tas571x_volatile_regs_range[] = {
	regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_ERR_STATUS_REG),
	regmap_reg_range(TAS571X_OSC_TRIM_REG,  TAS571X_OSC_TRIM_REG),
};

static const struct regmap_access_table tas571x_write_regs = {
	.no_ranges =	tas571x_readonly_regs_range,
	.n_no_ranges =	ARRAY_SIZE(tas571x_readonly_regs_range),
};

static const struct regmap_access_table tas571x_volatile_regs = {
	.yes_ranges =	tas571x_volatile_regs_range,
	.n_yes_ranges =	ARRAY_SIZE(tas571x_volatile_regs_range),

};

static const struct reg_default tas5711_reg_defaults[] = {
	{ 0x04, 0x05 },
	{ 0x05, 0x40 },
	{ 0x06, 0x00 },
	{ 0x07, 0xff },
	{ 0x08, 0x30 },
	{ 0x09, 0x30 },
	{ 0x1b, 0x82 },
};

static const struct regmap_config tas5711_regmap_config = {
	.reg_bits			= 8,
	.val_bits			= 32,
	.max_register			= 0xff,
	.reg_read			= tas571x_reg_read,
	.reg_write			= tas571x_reg_write,
	.reg_defaults			= tas5711_reg_defaults,
	.num_reg_defaults		= ARRAY_SIZE(tas5711_reg_defaults),
	.cache_type			= REGCACHE_RBTREE,
	.wr_table			= &tas571x_write_regs,
	.volatile_table			= &tas571x_volatile_regs,
};

static const struct tas571x_chip tas5711_chip = {
	.supply_names			= tas5711_supply_names,
	.num_supply_names		= ARRAY_SIZE(tas5711_supply_names),
	.controls			= tas5711_controls,
	.num_controls			= ARRAY_SIZE(tas5711_controls),
	.regmap_config			= &tas5711_regmap_config,
	.vol_reg_size			= 1,
};

static const char *const tas5717_supply_names[] = {
	"AVDD",
	"DVDD",
	"HPVDD",
	"PVDD_AB",
	"PVDD_CD",
};

static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0);

static const struct snd_kcontrol_new tas5717_controls[] = {
	/* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */
	SOC_SINGLE_TLV("Master Volume",
		       TAS571X_MVOL_REG, 1, 0x1ff, 1,
		       tas5717_volume_tlv),
	SOC_DOUBLE_R_TLV("Speaker Volume",
			 TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG,
			 1, 0x1ff, 1, tas5717_volume_tlv),
	SOC_DOUBLE("Speaker Switch",
		   TAS571X_SOFT_MUTE_REG,
		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
		   1, 1),

	SOC_DOUBLE_R_RANGE("CH1 Mixer Volume",
			   TAS5717_CH1_LEFT_CH_MIX_REG,
			   TAS5717_CH1_RIGHT_CH_MIX_REG,
			   16, 0, 0x80, 0),

	SOC_DOUBLE_R_RANGE("CH2 Mixer Volume",
			   TAS5717_CH2_LEFT_CH_MIX_REG,
			   TAS5717_CH2_RIGHT_CH_MIX_REG,
			   16, 0, 0x80, 0),

	/*
	 * The biquads are named according to the register names.
	 * Please note that TI's TAS57xx Graphical Development Environment
	 * tool names them different.
	 */
	BIQUAD_COEFS("CH1 - Biquad 0", TAS5717_CH1_BQ0_REG),
	BIQUAD_COEFS("CH1 - Biquad 1", TAS5717_CH1_BQ1_REG),
	BIQUAD_COEFS("CH1 - Biquad 2", TAS5717_CH1_BQ2_REG),
	BIQUAD_COEFS("CH1 - Biquad 3", TAS5717_CH1_BQ3_REG),
	BIQUAD_COEFS("CH1 - Biquad 4", TAS5717_CH1_BQ4_REG),
	BIQUAD_COEFS("CH1 - Biquad 5", TAS5717_CH1_BQ5_REG),
	BIQUAD_COEFS("CH1 - Biquad 6", TAS5717_CH1_BQ6_REG),
	BIQUAD_COEFS("CH1 - Biquad 7", TAS5717_CH1_BQ7_REG),
	BIQUAD_COEFS("CH1 - Biquad 8", TAS5717_CH1_BQ8_REG),
	BIQUAD_COEFS("CH1 - Biquad 9", TAS5717_CH1_BQ9_REG),
	BIQUAD_COEFS("CH1 - Biquad 10", TAS5717_CH1_BQ10_REG),
	BIQUAD_COEFS("CH1 - Biquad 11", TAS5717_CH1_BQ11_REG),

	BIQUAD_COEFS("CH2 - Biquad 0", TAS5717_CH2_BQ0_REG),
	BIQUAD_COEFS("CH2 - Biquad 1", TAS5717_CH2_BQ1_REG),
	BIQUAD_COEFS("CH2 - Biquad 2", TAS5717_CH2_BQ2_REG),
	BIQUAD_COEFS("CH2 - Biquad 3", TAS5717_CH2_BQ3_REG),
	BIQUAD_COEFS("CH2 - Biquad 4", TAS5717_CH2_BQ4_REG),
	BIQUAD_COEFS("CH2 - Biquad 5", TAS5717_CH2_BQ5_REG),
	BIQUAD_COEFS("CH2 - Biquad 6", TAS5717_CH2_BQ6_REG),
	BIQUAD_COEFS("CH2 - Biquad 7", TAS5717_CH2_BQ7_REG),
	BIQUAD_COEFS("CH2 - Biquad 8", TAS5717_CH2_BQ8_REG),
	BIQUAD_COEFS("CH2 - Biquad 9", TAS5717_CH2_BQ9_REG),
	BIQUAD_COEFS("CH2 - Biquad 10", TAS5717_CH2_BQ10_REG),
	BIQUAD_COEFS("CH2 - Biquad 11", TAS5717_CH2_BQ11_REG),

	BIQUAD_COEFS("CH3 - Biquad 0", TAS5717_CH3_BQ0_REG),
	BIQUAD_COEFS("CH3 - Biquad 1", TAS5717_CH3_BQ1_REG),

	BIQUAD_COEFS("CH4 - Biquad 0", TAS5717_CH4_BQ0_REG),
	BIQUAD_COEFS("CH4 - Biquad 1", TAS5717_CH4_BQ1_REG),
};

static const struct reg_default tas5717_reg_defaults[] = {
	{ 0x04, 0x05 },
	{ 0x05, 0x40 },
	{ 0x06, 0x00 },
	{ 0x07, 0x03ff },
	{ 0x08, 0x00c0 },
	{ 0x09, 0x00c0 },
	{ 0x1b, 0x82 },
	{ TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 },
	{ TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000},
	{ TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 },
	{ TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000},
};

static const struct regmap_config tas5717_regmap_config = {
	.reg_bits			= 8,
	.val_bits			= 32,
	.max_register			= 0xff,
	.reg_read			= tas571x_reg_read,
	.reg_write			= tas571x_reg_write,
	.reg_defaults			= tas5717_reg_defaults,
	.num_reg_defaults		= ARRAY_SIZE(tas5717_reg_defaults),
	.cache_type			= REGCACHE_RBTREE,
	.wr_table			= &tas571x_write_regs,
	.volatile_table			= &tas571x_volatile_regs,
};

/* This entry is reused for tas5719 as the software interface is identical. */
static const struct tas571x_chip tas5717_chip = {
	.supply_names			= tas5717_supply_names,
	.num_supply_names		= ARRAY_SIZE(tas5717_supply_names),
	.controls			= tas5717_controls,
	.num_controls			= ARRAY_SIZE(tas5717_controls),
	.regmap_config			= &tas5717_regmap_config,
	.vol_reg_size			= 2,
};

static const char *const tas5721_supply_names[] = {
	"AVDD",
	"DVDD",
	"DRVDD",
	"PVDD",
};

static const struct snd_kcontrol_new tas5721_controls[] = {
	SOC_SINGLE_TLV("Master Volume",
		       TAS571X_MVOL_REG,
		       0, 0xff, 1, tas5711_volume_tlv),
	SOC_DOUBLE_R_TLV("Speaker Volume",
			 TAS571X_CH1_VOL_REG,
			 TAS571X_CH2_VOL_REG,
			 0, 0xff, 1, tas5711_volume_tlv),
	SOC_DOUBLE("Speaker Switch",
		   TAS571X_SOFT_MUTE_REG,
		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
		   1, 1),
};

static const struct reg_default tas5721_reg_defaults[] = {
	{TAS571X_CLK_CTRL_REG,		0x6c},
	{TAS571X_DEV_ID_REG,		0x00},
	{TAS571X_ERR_STATUS_REG,	0x00},
	{TAS571X_SYS_CTRL_1_REG,	0xa0},
	{TAS571X_SDI_REG,		0x05},
	{TAS571X_SYS_CTRL_2_REG,	0x40},
	{TAS571X_SOFT_MUTE_REG,		0x00},
	{TAS571X_MVOL_REG,		0xff},
	{TAS571X_CH1_VOL_REG,		0x30},
	{TAS571X_CH2_VOL_REG,		0x30},
	{TAS571X_CH3_VOL_REG,		0x30},
	{TAS571X_VOL_CFG_REG,		0x91},
	{TAS571X_MODULATION_LIMIT_REG,	0x02},
	{TAS571X_IC_DELAY_CH1_REG,	0xac},
	{TAS571X_IC_DELAY_CH2_REG,	0x54},
	{TAS571X_IC_DELAY_CH3_REG,	0xac},
	{TAS571X_IC_DELAY_CH4_REG,	0x54},
	{TAS571X_PWM_CH_SDN_GROUP_REG,	0x30},
	{TAS571X_START_STOP_PERIOD_REG,	0x0f},
	{TAS571X_OSC_TRIM_REG,		0x82},
	{TAS571X_BKND_ERR_REG,		0x02},
	{TAS571X_INPUT_MUX_REG,		0x17772},
	{TAS571X_CH4_SRC_SELECT_REG,	0x4303},
	{TAS571X_PWM_MUX_REG,		0x1021345},
};

static const struct regmap_config tas5721_regmap_config = {
	.reg_bits			= 8,
	.val_bits			= 32,
	.max_register			= 0xff,
	.reg_read			= tas571x_reg_read,
	.reg_write			= tas571x_reg_write,
	.reg_defaults			= tas5721_reg_defaults,
	.num_reg_defaults		= ARRAY_SIZE(tas5721_reg_defaults),
	.cache_type			= REGCACHE_RBTREE,
	.wr_table			= &tas571x_write_regs,
	.volatile_table			= &tas571x_volatile_regs,
};


static const struct tas571x_chip tas5721_chip = {
	.supply_names			= tas5721_supply_names,
	.num_supply_names		= ARRAY_SIZE(tas5721_supply_names),
	.controls			= tas5711_controls,
	.num_controls			= ARRAY_SIZE(tas5711_controls),
	.regmap_config			= &tas5721_regmap_config,
	.vol_reg_size			= 1,
};

static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_OUTPUT("OUT_A"),
	SND_SOC_DAPM_OUTPUT("OUT_B"),
	SND_SOC_DAPM_OUTPUT("OUT_C"),
	SND_SOC_DAPM_OUTPUT("OUT_D"),
};

static const struct snd_soc_dapm_route tas571x_dapm_routes[] = {
	{ "DACL",  NULL, "Playback" },
	{ "DACR",  NULL, "Playback" },

	{ "OUT_A", NULL, "DACL" },
	{ "OUT_B", NULL, "DACL" },
	{ "OUT_C", NULL, "DACR" },
	{ "OUT_D", NULL, "DACR" },
};

static const struct snd_soc_codec_driver tas571x_codec = {
	.set_bias_level = tas571x_set_bias_level,
	.idle_bias_off = true,

	.component_driver = {
		.dapm_widgets		= tas571x_dapm_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(tas571x_dapm_widgets),
		.dapm_routes		= tas571x_dapm_routes,
		.num_dapm_routes	= ARRAY_SIZE(tas571x_dapm_routes),
	},
};

static struct snd_soc_dai_driver tas571x_dai = {
	.name = "tas571x-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SNDRV_PCM_FMTBIT_S32_LE |
			   SNDRV_PCM_FMTBIT_S24_LE |
			   SNDRV_PCM_FMTBIT_S16_LE,
	},
	.ops = &tas571x_dai_ops,
};

static const struct of_device_id tas571x_of_match[];

static int tas571x_i2c_probe(struct i2c_client *client,
			     const struct i2c_device_id *id)
{
	struct tas571x_private *priv;
	struct device *dev = &client->dev;
	const struct of_device_id *of_id;
	int i, ret;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;
	i2c_set_clientdata(client, priv);

	of_id = of_match_device(tas571x_of_match, dev);
	if (of_id)
		priv->chip = of_id->data;
	else
		priv->chip = (void *) id->driver_data;

	priv->mclk = devm_clk_get(dev, "mclk");
	if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) {
		dev_err(dev, "Failed to request mclk: %ld\n",
			PTR_ERR(priv->mclk));
		return PTR_ERR(priv->mclk);
	}

	if (WARN_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES))
		return -EINVAL;
	for (i = 0; i < priv->chip->num_supply_names; i++)
		priv->supplies[i].supply = priv->chip->supply_names[i];

	ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names,
				      priv->supplies);
	if (ret) {
		dev_err(dev, "Failed to get supplies: %d\n", ret);
		return ret;
	}
	ret = regulator_bulk_enable(priv->chip->num_supply_names,
				    priv->supplies);
	if (ret) {
		dev_err(dev, "Failed to enable supplies: %d\n", ret);
		return ret;
	}

	priv->regmap = devm_regmap_init(dev, NULL, client,
					priv->chip->regmap_config);
	if (IS_ERR(priv->regmap))
		return PTR_ERR(priv->regmap);

	priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW);
	if (IS_ERR(priv->pdn_gpio)) {
		dev_err(dev, "error requesting pdn_gpio: %ld\n",
			PTR_ERR(priv->pdn_gpio));
		return PTR_ERR(priv->pdn_gpio);
	}

	priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
						   GPIOD_OUT_HIGH);
	if (IS_ERR(priv->reset_gpio)) {
		dev_err(dev, "error requesting reset_gpio: %ld\n",
			PTR_ERR(priv->reset_gpio));
		return PTR_ERR(priv->reset_gpio);
	} else if (priv->reset_gpio) {
		/* pulse the active low reset line for ~100us */
		usleep_range(100, 200);
		gpiod_set_value(priv->reset_gpio, 0);
		usleep_range(13500, 20000);
	}

	ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0);
	if (ret)
		return ret;

	usleep_range(50000, 60000);

	memcpy(&priv->codec_driver, &tas571x_codec, sizeof(priv->codec_driver));
	priv->codec_driver.component_driver.controls = priv->chip->controls;
	priv->codec_driver.component_driver.num_controls = priv->chip->num_controls;

	if (priv->chip->vol_reg_size == 2) {
		/*
		 * The master volume defaults to 0x3ff (mute), but we ignore
		 * (zero) the LSB because the hardware step size is 0.125 dB
		 * and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB.
		 */
		ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0);
		if (ret)
			return ret;
	}

	return snd_soc_register_codec(&client->dev, &priv->codec_driver,
				      &tas571x_dai, 1);
}

static int tas571x_i2c_remove(struct i2c_client *client)
{
	struct tas571x_private *priv = i2c_get_clientdata(client);

	snd_soc_unregister_codec(&client->dev);
	regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies);

	return 0;
}

static const struct of_device_id tas571x_of_match[] = {
	{ .compatible = "ti,tas5711", .data = &tas5711_chip, },
	{ .compatible = "ti,tas5717", .data = &tas5717_chip, },
	{ .compatible = "ti,tas5719", .data = &tas5717_chip, },
	{ .compatible = "ti,tas5721", .data = &tas5721_chip, },
	{ }
};
MODULE_DEVICE_TABLE(of, tas571x_of_match);

static const struct i2c_device_id tas571x_i2c_id[] = {
	{ "tas5711", (kernel_ulong_t) &tas5711_chip },
	{ "tas5717", (kernel_ulong_t) &tas5717_chip },
	{ "tas5719", (kernel_ulong_t) &tas5717_chip },
	{ "tas5721", (kernel_ulong_t) &tas5721_chip },
	{ }
};
MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id);

static struct i2c_driver tas571x_i2c_driver = {
	.driver = {
		.name = "tas571x",
		.of_match_table = of_match_ptr(tas571x_of_match),
	},
	.probe = tas571x_i2c_probe,
	.remove = tas571x_i2c_remove,
	.id_table = tas571x_i2c_id,
};
module_i2c_driver(tas571x_i2c_driver);

MODULE_DESCRIPTION("ASoC TAS571x driver");
MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>");
MODULE_LICENSE("GPL");