summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/ssm2602.c
blob: 993bde29ca1bcc6e611bf8d7b7b1f83caa0ce396 (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
/*
 * File:         sound/soc/codecs/ssm2602.c
 * Author:       Cliff Cai <Cliff.Cai@analog.com>
 *
 * Created:      Tue June 06 2008
 * Description:  Driver for ssm2602 sound chip
 *
 * Modified:
 *               Copyright 2008 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>

#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#include "ssm2602.h"

/* codec private data */
struct ssm2602_priv {
	unsigned int sysclk;
	const struct snd_pcm_hw_constraint_list *sysclk_constraints;

	struct regmap *regmap;

	enum ssm2602_type type;
	unsigned int clk_out_pwr;
};

/*
 * ssm2602 register cache
 * We can't read the ssm2602 register space when we are
 * using 2 wire for device control, so we cache them instead.
 * There is no point in caching the reset register
 */
static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
	0x0097, 0x0097, 0x0079, 0x0079,
	0x000a, 0x0008, 0x009f, 0x000a,
	0x0000, 0x0000
};


/*Appending several "None"s just for OSS mixer use*/
static const char *ssm2602_input_select[] = {
	"Line", "Mic",
};

static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};

static const struct soc_enum ssm2602_enum[] = {
	SOC_ENUM_SINGLE(SSM2602_APANA, 2, ARRAY_SIZE(ssm2602_input_select),
			ssm2602_input_select),
	SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, ARRAY_SIZE(ssm2602_deemph),
			ssm2602_deemph),
};

static const DECLARE_TLV_DB_RANGE(ssm260x_outmix_tlv,
	0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
	48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0)
);

static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);

static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
	ssm260x_inpga_tlv),
SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),

SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),

SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
};

static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
	0, 127, 0, ssm260x_outmix_tlv),
SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
	7, 1, 0),
SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
	ssm260x_sidetone_tlv),

SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
};

/* Output Mixer */
static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
};

/* Input mux */
static const struct snd_kcontrol_new ssm2602_input_mux_controls =
SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);

static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),

SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),

SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_INPUT("RLINEIN"),
SND_SOC_DAPM_INPUT("LLINEIN"),
};

static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
	ssm260x_output_mixer_controls,
	ARRAY_SIZE(ssm260x_output_mixer_controls)),

SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),

SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
SND_SOC_DAPM_INPUT("MICIN"),
};

static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
	ssm260x_output_mixer_controls,
	ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
};

static const struct snd_soc_dapm_route ssm260x_routes[] = {
	{"DAC", NULL, "Digital Core Power"},
	{"ADC", NULL, "Digital Core Power"},

	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	{"Output Mixer", "HiFi Playback Switch", "DAC"},

	{"ROUT", NULL, "Output Mixer"},
	{"LOUT", NULL, "Output Mixer"},

	{"Line Input", NULL, "LLINEIN"},
	{"Line Input", NULL, "RLINEIN"},
};

static const struct snd_soc_dapm_route ssm2602_routes[] = {
	{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},

	{"RHPOUT", NULL, "Output Mixer"},
	{"LHPOUT", NULL, "Output Mixer"},

	{"Input Mux", "Line", "Line Input"},
	{"Input Mux", "Mic", "Mic Bias"},
	{"ADC", NULL, "Input Mux"},

	{"Mic Bias", NULL, "MICIN"},
};

static const struct snd_soc_dapm_route ssm2604_routes[] = {
	{"ADC", NULL, "Line Input"},
};

static const unsigned int ssm2602_rates_12288000[] = {
	8000, 16000, 32000, 48000, 96000,
};

static const struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
	.list = ssm2602_rates_12288000,
	.count = ARRAY_SIZE(ssm2602_rates_12288000),
};

static const unsigned int ssm2602_rates_11289600[] = {
	8000, 11025, 22050, 44100, 88200,
};

static const struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
	.list = ssm2602_rates_11289600,
	.count = ARRAY_SIZE(ssm2602_rates_11289600),
};

struct ssm2602_coeff {
	u32 mclk;
	u32 rate;
	u8 srate;
};

#define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))

/* codec mclk clock coefficients */
static const struct ssm2602_coeff ssm2602_coeff_table[] = {
	/* 48k */
	{12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
	{18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
	{12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},

	/* 32k */
	{12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
	{18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
	{12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},

	/* 16k */
	{12288000, 16000, SSM2602_COEFF_SRATE(0x5, 0x0, 0x0)},
	{18432000, 16000, SSM2602_COEFF_SRATE(0x5, 0x1, 0x0)},
	{12000000, 16000, SSM2602_COEFF_SRATE(0xa, 0x0, 0x1)},

	/* 8k */
	{12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
	{18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
	{11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
	{16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
	{12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},

	/* 96k */
	{12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
	{18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
	{12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},

	/* 11.025k */
	{11289600, 11025, SSM2602_COEFF_SRATE(0xc, 0x0, 0x0)},
	{16934400, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x0)},
	{12000000, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x1)},

	/* 22.05k */
	{11289600, 22050, SSM2602_COEFF_SRATE(0xd, 0x0, 0x0)},
	{16934400, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x0)},
	{12000000, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x1)},

	/* 44.1k */
	{11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
	{16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
	{12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},

	/* 88.2k */
	{11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
	{16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
	{12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
};

static inline int ssm2602_get_coeff(int mclk, int rate)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
		if (ssm2602_coeff_table[i].rate == rate &&
			ssm2602_coeff_table[i].mclk == mclk)
			return ssm2602_coeff_table[i].srate;
	}
	return -EINVAL;
}

static int ssm2602_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
	int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
	unsigned int iface;

	if (srate < 0)
		return srate;

	regmap_write(ssm2602->regmap, SSM2602_SRATE, srate);

	/* bit size */
	switch (params_width(params)) {
	case 16:
		iface = 0x0;
		break;
	case 20:
		iface = 0x4;
		break;
	case 24:
		iface = 0x8;
		break;
	case 32:
		iface = 0xc;
		break;
	default:
		return -EINVAL;
	}
	regmap_update_bits(ssm2602->regmap, SSM2602_IFACE,
		IFACE_AUDIO_DATA_LEN, iface);
	return 0;
}

static int ssm2602_startup(struct snd_pcm_substream *substream,
			   struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);

	if (ssm2602->sysclk_constraints) {
		snd_pcm_hw_constraint_list(substream->runtime, 0,
				   SNDRV_PCM_HW_PARAM_RATE,
				   ssm2602->sysclk_constraints);
	}

	return 0;
}

static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
{
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(dai->codec);

	if (mute)
		regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
				    APDIGI_ENABLE_DAC_MUTE,
				    APDIGI_ENABLE_DAC_MUTE);
	else
		regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
				    APDIGI_ENABLE_DAC_MUTE, 0);
	return 0;
}

static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
		int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);

	if (dir == SND_SOC_CLOCK_IN) {
		if (clk_id != SSM2602_SYSCLK)
			return -EINVAL;

		switch (freq) {
		case 12288000:
		case 18432000:
			ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
			break;
		case 11289600:
		case 16934400:
			ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
			break;
		case 12000000:
			ssm2602->sysclk_constraints = NULL;
			break;
		default:
			return -EINVAL;
		}
		ssm2602->sysclk = freq;
	} else {
		unsigned int mask;

		switch (clk_id) {
		case SSM2602_CLK_CLKOUT:
			mask = PWR_CLK_OUT_PDN;
			break;
		case SSM2602_CLK_XTO:
			mask = PWR_OSC_PDN;
			break;
		default:
			return -EINVAL;
		}

		if (freq == 0)
			ssm2602->clk_out_pwr |= mask;
		else
			ssm2602->clk_out_pwr &= ~mask;

		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
			PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
	}

	return 0;
}

static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec_dai->codec);
	unsigned int iface = 0;

	/* set master/slave audio interface */
	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		iface |= 0x0040;
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		return -EINVAL;
	}

	/* interface format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		iface |= 0x0002;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		iface |= 0x0001;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		iface |= 0x0013;
		break;
	case SND_SOC_DAIFMT_DSP_B:
		iface |= 0x0003;
		break;
	default:
		return -EINVAL;
	}

	/* clock inversion */
	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		break;
	case SND_SOC_DAIFMT_IB_IF:
		iface |= 0x0090;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		iface |= 0x0080;
		break;
	case SND_SOC_DAIFMT_NB_IF:
		iface |= 0x0010;
		break;
	default:
		return -EINVAL;
	}

	/* set iface */
	regmap_write(ssm2602->regmap, SSM2602_IFACE, iface);
	return 0;
}

static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
				 enum snd_soc_bias_level level)
{
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);

	switch (level) {
	case SND_SOC_BIAS_ON:
		/* vref/mid on, osc and clkout on if enabled */
		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
			PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
			ssm2602->clk_out_pwr);
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		/* everything off except vref/vmid, */
		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
			PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
			PWR_CLK_OUT_PDN | PWR_OSC_PDN);
		break;
	case SND_SOC_BIAS_OFF:
		/* everything off */
		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
			PWR_POWER_OFF, PWR_POWER_OFF);
		break;

	}
	return 0;
}

#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
		SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
		SNDRV_PCM_RATE_96000)

#define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
		SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)

static const struct snd_soc_dai_ops ssm2602_dai_ops = {
	.startup	= ssm2602_startup,
	.hw_params	= ssm2602_hw_params,
	.digital_mute	= ssm2602_mute,
	.set_sysclk	= ssm2602_set_dai_sysclk,
	.set_fmt	= ssm2602_set_dai_fmt,
};

static struct snd_soc_dai_driver ssm2602_dai = {
	.name = "ssm2602-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SSM2602_RATES,
		.formats = SSM2602_FORMATS,},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SSM2602_RATES,
		.formats = SSM2602_FORMATS,},
	.ops = &ssm2602_dai_ops,
	.symmetric_rates = 1,
	.symmetric_samplebits = 1,
};

static int ssm2602_resume(struct snd_soc_codec *codec)
{
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);

	regcache_sync(ssm2602->regmap);

	return 0;
}

static int ssm2602_codec_probe(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
	int ret;

	regmap_update_bits(ssm2602->regmap, SSM2602_LOUT1V,
			    LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
	regmap_update_bits(ssm2602->regmap, SSM2602_ROUT1V,
			    ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);

	ret = snd_soc_add_codec_controls(codec, ssm2602_snd_controls,
			ARRAY_SIZE(ssm2602_snd_controls));
	if (ret)
		return ret;

	ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
			ARRAY_SIZE(ssm2602_dapm_widgets));
	if (ret)
		return ret;

	return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
			ARRAY_SIZE(ssm2602_routes));
}

static int ssm2604_codec_probe(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
	int ret;

	ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
			ARRAY_SIZE(ssm2604_dapm_widgets));
	if (ret)
		return ret;

	return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
			ARRAY_SIZE(ssm2604_routes));
}

static int ssm260x_codec_probe(struct snd_soc_codec *codec)
{
	struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
	int ret;

	ret = regmap_write(ssm2602->regmap, SSM2602_RESET, 0);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
		return ret;
	}

	/* set the update bits */
	regmap_update_bits(ssm2602->regmap, SSM2602_LINVOL,
			    LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
	regmap_update_bits(ssm2602->regmap, SSM2602_RINVOL,
			    RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
	/*select Line in as default input*/
	regmap_write(ssm2602->regmap, SSM2602_APANA, APANA_SELECT_DAC |
			APANA_ENABLE_MIC_BOOST);

	switch (ssm2602->type) {
	case SSM2602:
		ret = ssm2602_codec_probe(codec);
		break;
	case SSM2604:
		ret = ssm2604_codec_probe(codec);
		break;
	}

	return ret;
}

static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
	.probe =	ssm260x_codec_probe,
	.resume =	ssm2602_resume,
	.set_bias_level = ssm2602_set_bias_level,
	.suspend_bias_off = true,

	.component_driver = {
		.controls		= ssm260x_snd_controls,
		.num_controls		= ARRAY_SIZE(ssm260x_snd_controls),
		.dapm_widgets		= ssm260x_dapm_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(ssm260x_dapm_widgets),
		.dapm_routes		= ssm260x_routes,
		.num_dapm_routes	= ARRAY_SIZE(ssm260x_routes),
	},
};

static bool ssm2602_register_volatile(struct device *dev, unsigned int reg)
{
	return reg == SSM2602_RESET;
}

const struct regmap_config ssm2602_regmap_config = {
	.val_bits = 9,
	.reg_bits = 7,

	.max_register = SSM2602_RESET,
	.volatile_reg = ssm2602_register_volatile,

	.cache_type = REGCACHE_RBTREE,
	.reg_defaults_raw = ssm2602_reg,
	.num_reg_defaults_raw = ARRAY_SIZE(ssm2602_reg),
};
EXPORT_SYMBOL_GPL(ssm2602_regmap_config);

int ssm2602_probe(struct device *dev, enum ssm2602_type type,
	struct regmap *regmap)
{
	struct ssm2602_priv *ssm2602;

	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	ssm2602 = devm_kzalloc(dev, sizeof(*ssm2602), GFP_KERNEL);
	if (ssm2602 == NULL)
		return -ENOMEM;

	dev_set_drvdata(dev, ssm2602);
	ssm2602->type = type;
	ssm2602->regmap = regmap;

	return snd_soc_register_codec(dev, &soc_codec_dev_ssm2602,
		&ssm2602_dai, 1);
}
EXPORT_SYMBOL_GPL(ssm2602_probe);

MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
MODULE_AUTHOR("Cliff Cai");
MODULE_LICENSE("GPL");