summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/sti-sas.c
blob: d6e00c77edcd7360b8df3d9942e5c4213ba530b6 (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
/*
 * Copyright (C) STMicroelectronics SA 2015
 * Authors: Arnaud Pouliquen <arnaud.pouliquen@st.com>
 *          for STMicroelectronics.
 * License terms:  GNU General Public License (GPL), version 2
 */

#include <linux/io.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/mfd/syscon.h>

#include <sound/soc.h>
#include <sound/soc-dapm.h>

/* chipID supported */
#define CHIPID_STIH416 0
#define CHIPID_STIH407 1

/* DAC definitions */

/* stih416 DAC registers */
/* sysconf 2517: Audio-DAC-Control */
#define STIH416_AUDIO_DAC_CTRL 0x00000814
/* sysconf 2519: Audio-Gue-Control */
#define STIH416_AUDIO_GLUE_CTRL 0x0000081C

#define STIH416_DAC_NOT_STANDBY	0x3
#define STIH416_DAC_SOFTMUTE	0x4
#define STIH416_DAC_ANA_NOT_PWR	0x5
#define STIH416_DAC_NOT_PNDBG	0x6

#define STIH416_DAC_NOT_STANDBY_MASK	BIT(STIH416_DAC_NOT_STANDBY)
#define STIH416_DAC_SOFTMUTE_MASK	BIT(STIH416_DAC_SOFTMUTE)
#define STIH416_DAC_ANA_NOT_PWR_MASK	BIT(STIH416_DAC_ANA_NOT_PWR)
#define STIH416_DAC_NOT_PNDBG_MASK	BIT(STIH416_DAC_NOT_PNDBG)

/* stih407 DAC registers */
/* sysconf 5041: Audio-Gue-Control */
#define STIH407_AUDIO_GLUE_CTRL 0x000000A4
/* sysconf 5042: Audio-DAC-Control */
#define STIH407_AUDIO_DAC_CTRL 0x000000A8

/* DAC definitions */
#define STIH407_DAC_SOFTMUTE		0x0
#define STIH407_DAC_STANDBY_ANA		0x1
#define STIH407_DAC_STANDBY		0x2

#define STIH407_DAC_SOFTMUTE_MASK	BIT(STIH407_DAC_SOFTMUTE)
#define STIH407_DAC_STANDBY_ANA_MASK    BIT(STIH407_DAC_STANDBY_ANA)
#define STIH407_DAC_STANDBY_MASK        BIT(STIH407_DAC_STANDBY)

/* SPDIF definitions */
#define SPDIF_BIPHASE_ENABLE		0x6
#define SPDIF_BIPHASE_IDLE		0x7

#define SPDIF_BIPHASE_ENABLE_MASK	BIT(SPDIF_BIPHASE_ENABLE)
#define SPDIF_BIPHASE_IDLE_MASK		BIT(SPDIF_BIPHASE_IDLE)

enum {
	STI_SAS_DAI_SPDIF_OUT,
	STI_SAS_DAI_ANALOG_OUT,
};

static const struct reg_default stih416_sas_reg_defaults[] = {
	{ STIH407_AUDIO_GLUE_CTRL, 0x00000040 },
	{ STIH407_AUDIO_DAC_CTRL, 0x000000000 },
};

static const struct reg_default stih407_sas_reg_defaults[] = {
	{ STIH416_AUDIO_DAC_CTRL, 0x000000000 },
	{ STIH416_AUDIO_GLUE_CTRL, 0x00000040 },
};

struct sti_dac_audio {
	struct regmap *regmap;
	struct regmap *virt_regmap;
	struct regmap_field  **field;
	struct reset_control *rst;
	int mclk;
};

struct sti_spdif_audio {
	struct regmap *regmap;
	struct regmap_field  **field;
	int mclk;
};

/* device data structure */
struct sti_sas_dev_data {
	const int chipid; /* IC version */
	const struct regmap_config *regmap;
	const struct snd_soc_dai_ops *dac_ops;  /* DAC function callbacks */
	const struct snd_soc_dapm_widget *dapm_widgets; /* dapms declaration */
	const int num_dapm_widgets; /* dapms declaration */
	const struct snd_soc_dapm_route *dapm_routes; /* route declaration */
	const int num_dapm_routes; /* route declaration */
};

/* driver data structure */
struct sti_sas_data {
	struct device *dev;
	const struct sti_sas_dev_data *dev_data;
	struct sti_dac_audio dac;
	struct sti_spdif_audio spdif;
};

/* Read a register from the sysconf reg bank */
static int sti_sas_read_reg(void *context, unsigned int reg,
			    unsigned int *value)
{
	struct sti_sas_data *drvdata = context;
	int status;
	u32 val;

	status = regmap_read(drvdata->dac.regmap, reg, &val);
	*value = (unsigned int)val;

	return status;
}

/* Read a register from the sysconf reg bank */
static int sti_sas_write_reg(void *context, unsigned int reg,
			     unsigned int value)
{
	struct sti_sas_data *drvdata = context;
	int status;

	status = regmap_write(drvdata->dac.regmap, reg, value);

	return status;
}

static int  sti_sas_init_sas_registers(struct snd_soc_codec *codec,
				       struct sti_sas_data *data)
{
	int ret;
	/*
	 * DAC and SPDIF are activated by default
	 * put them in IDLE to save power
	 */

	/* Initialise bi-phase formatter to disabled */
	ret = snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
				  SPDIF_BIPHASE_ENABLE_MASK, 0);

	if (!ret)
		/* Initialise bi-phase formatter idle value to 0 */
		ret = snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
					  SPDIF_BIPHASE_IDLE_MASK, 0);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to update SPDIF registers");
		return ret;
	}

	/* Init DAC configuration */
	switch (data->dev_data->chipid) {
	case CHIPID_STIH407:
		/* init configuration */
		ret =  snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
					   STIH407_DAC_STANDBY_MASK,
					   STIH407_DAC_STANDBY_MASK);

		if (!ret)
			ret = snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
						  STIH407_DAC_STANDBY_ANA_MASK,
						  STIH407_DAC_STANDBY_ANA_MASK);
		if (!ret)
			ret = snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
						  STIH407_DAC_SOFTMUTE_MASK,
						  STIH407_DAC_SOFTMUTE_MASK);
		break;
	case CHIPID_STIH416:
		ret =  snd_soc_update_bits(codec, STIH416_AUDIO_DAC_CTRL,
					   STIH416_DAC_NOT_STANDBY_MASK, 0);
		if (!ret)
			ret =  snd_soc_update_bits(codec,
						   STIH416_AUDIO_DAC_CTRL,
						   STIH416_DAC_ANA_NOT_PWR, 0);
		if (!ret)
			ret =  snd_soc_update_bits(codec,
						   STIH416_AUDIO_DAC_CTRL,
						   STIH416_DAC_NOT_PNDBG_MASK,
						   0);
		if (!ret)
			ret =  snd_soc_update_bits(codec,
						   STIH416_AUDIO_DAC_CTRL,
						   STIH416_DAC_SOFTMUTE_MASK,
						   STIH416_DAC_SOFTMUTE_MASK);
		break;
	default:
		return -EINVAL;
	}

	if (ret < 0) {
		dev_err(codec->dev, "Failed to update DAC registers");
		return ret;
	}

	return ret;
}

/*
 * DAC
 */
static int sti_sas_dac_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	/* Sanity check only */
	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
		dev_err(dai->codec->dev,
			"%s: ERROR: Unsupporter master mask 0x%x\n",
			__func__, fmt & SND_SOC_DAIFMT_MASTER_MASK);
		return -EINVAL;
	}

	return 0;
}

static int stih416_dac_probe(struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
	struct sti_dac_audio *dac = &drvdata->dac;

	/* Get reset control */
	dac->rst = devm_reset_control_get(codec->dev, "dac_rst");
	if (IS_ERR(dac->rst)) {
		dev_err(dai->codec->dev,
			"%s: ERROR: DAC reset control not defined !\n",
			__func__);
		dac->rst = NULL;
		return -EFAULT;
	}
	/* Put the DAC into reset */
	reset_control_assert(dac->rst);

	return 0;
}

static const struct snd_soc_dapm_widget stih416_sas_dapm_widgets[] = {
	SND_SOC_DAPM_PGA("DAC bandgap", STIH416_AUDIO_DAC_CTRL,
			 STIH416_DAC_NOT_PNDBG_MASK, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("DAC standby ana", STIH416_AUDIO_DAC_CTRL,
			     STIH416_DAC_ANA_NOT_PWR, 0, NULL, 0),
	SND_SOC_DAPM_DAC("DAC standby",  "dac_p", STIH416_AUDIO_DAC_CTRL,
			 STIH416_DAC_NOT_STANDBY, 0),
	SND_SOC_DAPM_OUTPUT("DAC Output"),
};

static const struct snd_soc_dapm_widget stih407_sas_dapm_widgets[] = {
	SND_SOC_DAPM_OUT_DRV("DAC standby ana", STIH407_AUDIO_DAC_CTRL,
			     STIH407_DAC_STANDBY_ANA, 1, NULL, 0),
	SND_SOC_DAPM_DAC("DAC standby",  "dac_p", STIH407_AUDIO_DAC_CTRL,
			 STIH407_DAC_STANDBY, 1),
	SND_SOC_DAPM_OUTPUT("DAC Output"),
};

static const struct snd_soc_dapm_route stih416_sas_route[] = {
	{"DAC Output", NULL, "DAC bandgap"},
	{"DAC Output", NULL, "DAC standby ana"},
	{"DAC standby ana", NULL, "DAC standby"},
};

static const struct snd_soc_dapm_route stih407_sas_route[] = {
	{"DAC Output", NULL, "DAC standby ana"},
	{"DAC standby ana", NULL, "DAC standby"},
};

static int stih416_sas_dac_mute(struct snd_soc_dai *dai, int mute, int stream)
{
	struct snd_soc_codec *codec = dai->codec;

	if (mute) {
		return snd_soc_update_bits(codec, STIH416_AUDIO_DAC_CTRL,
					    STIH416_DAC_SOFTMUTE_MASK,
					    STIH416_DAC_SOFTMUTE_MASK);
	} else {
		return snd_soc_update_bits(codec, STIH416_AUDIO_DAC_CTRL,
					    STIH416_DAC_SOFTMUTE_MASK, 0);
	}
}

static int stih407_sas_dac_mute(struct snd_soc_dai *dai, int mute, int stream)
{
	struct snd_soc_codec *codec = dai->codec;

	if (mute) {
		return snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
					    STIH407_DAC_SOFTMUTE_MASK,
					    STIH407_DAC_SOFTMUTE_MASK);
	} else {
		return snd_soc_update_bits(codec, STIH407_AUDIO_DAC_CTRL,
					    STIH407_DAC_SOFTMUTE_MASK,
					    0);
	}
}

/*
 * SPDIF
 */
static int sti_sas_spdif_set_fmt(struct snd_soc_dai *dai,
				 unsigned int fmt)
{
	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
		dev_err(dai->codec->dev,
			"%s: ERROR: Unsupporter master mask 0x%x\n",
			__func__, fmt & SND_SOC_DAIFMT_MASTER_MASK);
		return -EINVAL;
	}

	return 0;
}

/*
 * sti_sas_spdif_trigger:
 * Trigger function is used to ensure that BiPhase Formater is disabled
 * before CPU dai is stopped.
 * This is mandatory to avoid that BPF is stalled
 */
static int sti_sas_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
				 struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		return snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
					    SPDIF_BIPHASE_ENABLE_MASK,
					    SPDIF_BIPHASE_ENABLE_MASK);
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
		return snd_soc_update_bits(codec, STIH407_AUDIO_GLUE_CTRL,
					    SPDIF_BIPHASE_ENABLE_MASK,
					    0);
	default:
		return -EINVAL;
	}
}

static bool sti_sas_volatile_register(struct device *dev, unsigned int reg)
{
	if (reg == STIH407_AUDIO_GLUE_CTRL)
		return true;

	return false;
}

/*
 * CODEC DAIS
 */

/*
 * sti_sas_set_sysclk:
 * get MCLK input frequency to check that MCLK-FS ratio is coherent
 */
static int sti_sas_set_sysclk(struct snd_soc_dai *dai, int clk_id,
			      unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = dai->codec;
	struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);

	if (dir == SND_SOC_CLOCK_OUT)
		return 0;

	if (clk_id != 0)
		return -EINVAL;

	switch (dai->id) {
	case STI_SAS_DAI_SPDIF_OUT:
		drvdata->spdif.mclk = freq;
		break;

	case STI_SAS_DAI_ANALOG_OUT:
		drvdata->dac.mclk = freq;
		break;
	}

	return 0;
}

static int sti_sas_prepare(struct snd_pcm_substream *substream,
			   struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
	struct snd_pcm_runtime *runtime = substream->runtime;

	switch (dai->id) {
	case STI_SAS_DAI_SPDIF_OUT:
		if ((drvdata->spdif.mclk / runtime->rate) != 128) {
			dev_err(codec->dev, "unexpected mclk-fs ratio");
			return -EINVAL;
		}
		break;
	case STI_SAS_DAI_ANALOG_OUT:
		if ((drvdata->dac.mclk / runtime->rate) != 256) {
			dev_err(codec->dev, "unexpected mclk-fs ratio");
			return -EINVAL;
		}
		break;
	}

	return 0;
}

static const struct snd_soc_dai_ops stih416_dac_ops = {
	.set_fmt = sti_sas_dac_set_fmt,
	.mute_stream = stih416_sas_dac_mute,
	.prepare = sti_sas_prepare,
	.set_sysclk = sti_sas_set_sysclk,
};

static const struct snd_soc_dai_ops stih407_dac_ops = {
	.set_fmt = sti_sas_dac_set_fmt,
	.mute_stream = stih407_sas_dac_mute,
	.prepare = sti_sas_prepare,
	.set_sysclk = sti_sas_set_sysclk,
};

static const struct regmap_config stih407_sas_regmap = {
	.reg_bits = 32,
	.val_bits = 32,
	.fast_io = true,
	.max_register = STIH407_AUDIO_DAC_CTRL,
	.reg_defaults = stih407_sas_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(stih407_sas_reg_defaults),
	.volatile_reg = sti_sas_volatile_register,
	.cache_type = REGCACHE_RBTREE,
	.reg_read = sti_sas_read_reg,
	.reg_write = sti_sas_write_reg,
};

static const struct regmap_config stih416_sas_regmap = {
	.reg_bits = 32,
	.val_bits = 32,

	.max_register = STIH416_AUDIO_DAC_CTRL,
	.reg_defaults = stih416_sas_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(stih416_sas_reg_defaults),
	.volatile_reg = sti_sas_volatile_register,
	.cache_type = REGCACHE_RBTREE,
	.reg_read = sti_sas_read_reg,
	.reg_write = sti_sas_write_reg,
};

static const struct sti_sas_dev_data stih416_data = {
	.chipid = CHIPID_STIH416,
	.regmap = &stih416_sas_regmap,
	.dac_ops = &stih416_dac_ops,
	.dapm_widgets = stih416_sas_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(stih416_sas_dapm_widgets),
	.dapm_routes =	stih416_sas_route,
	.num_dapm_routes = ARRAY_SIZE(stih416_sas_route),
};

static const struct sti_sas_dev_data stih407_data = {
	.chipid = CHIPID_STIH407,
	.regmap = &stih407_sas_regmap,
	.dac_ops = &stih407_dac_ops,
	.dapm_widgets = stih407_sas_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(stih407_sas_dapm_widgets),
	.dapm_routes =	stih407_sas_route,
	.num_dapm_routes = ARRAY_SIZE(stih407_sas_route),
};

static struct snd_soc_dai_driver sti_sas_dai[] = {
	{
		.name = "sas-dai-spdif-out",
		.id = STI_SAS_DAI_SPDIF_OUT,
		.playback = {
			.stream_name = "spdif_p",
			.channels_min = 2,
			.channels_max = 2,
			.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
				 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 |
				 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
				 SNDRV_PCM_RATE_192000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE |
				   SNDRV_PCM_FMTBIT_S32_LE,
		},
		.ops = (struct snd_soc_dai_ops[]) {
			{
				.set_fmt = sti_sas_spdif_set_fmt,
				.trigger = sti_sas_spdif_trigger,
				.set_sysclk = sti_sas_set_sysclk,
				.prepare = sti_sas_prepare,
			}
		},
	},
	{
		.name = "sas-dai-dac",
		.id = STI_SAS_DAI_ANALOG_OUT,
		.playback = {
			.stream_name = "dac_p",
			.channels_min = 2,
			.channels_max = 2,
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE |
				   SNDRV_PCM_FMTBIT_S32_LE,
		},
	},
};

#ifdef CONFIG_PM_SLEEP
static int sti_sas_resume(struct snd_soc_codec *codec)
{
	struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);

	return sti_sas_init_sas_registers(codec, drvdata);
}
#else
#define sti_sas_resume NULL
#endif

static int sti_sas_codec_probe(struct snd_soc_codec *codec)
{
	struct sti_sas_data *drvdata = dev_get_drvdata(codec->dev);
	int ret;

	ret = sti_sas_init_sas_registers(codec, drvdata);

	return ret;
}

static struct snd_soc_codec_driver sti_sas_driver = {
	.probe = sti_sas_codec_probe,
	.resume = sti_sas_resume,
};

static const struct of_device_id sti_sas_dev_match[] = {
	{
		.compatible = "st,stih416-sas-codec",
		.data = &stih416_data,
	},
	{
		.compatible = "st,stih407-sas-codec",
		.data = &stih407_data,
	},
	{},
};

static int sti_sas_driver_probe(struct platform_device *pdev)
{
	struct device_node *pnode = pdev->dev.of_node;
	struct sti_sas_data *drvdata;
	const struct of_device_id *of_id;

	/* Allocate device structure */
	drvdata = devm_kzalloc(&pdev->dev, sizeof(struct sti_sas_data),
			       GFP_KERNEL);
	if (!drvdata)
		return -ENOMEM;

	/* Populate data structure depending on compatibility */
	of_id = of_match_node(sti_sas_dev_match, pnode);
	if (!of_id->data) {
		dev_err(&pdev->dev, "data associated to device is missing");
		return -EINVAL;
	}

	drvdata->dev_data = (struct sti_sas_dev_data *)of_id->data;

	/* Initialise device structure */
	drvdata->dev = &pdev->dev;

	/* Request the DAC & SPDIF registers memory region */
	drvdata->dac.virt_regmap = devm_regmap_init(&pdev->dev, NULL, drvdata,
						    drvdata->dev_data->regmap);
	if (IS_ERR(drvdata->dac.virt_regmap)) {
		dev_err(&pdev->dev, "audio registers not enabled\n");
		return PTR_ERR(drvdata->dac.virt_regmap);
	}

	/* Request the syscon region */
	drvdata->dac.regmap =
		syscon_regmap_lookup_by_phandle(pnode, "st,syscfg");
	if (IS_ERR(drvdata->dac.regmap)) {
		dev_err(&pdev->dev, "syscon registers not available\n");
		return PTR_ERR(drvdata->dac.regmap);
	}
	drvdata->spdif.regmap = drvdata->dac.regmap;

	/* Set DAC dai probe */
	if (drvdata->dev_data->chipid == CHIPID_STIH416)
		sti_sas_dai[STI_SAS_DAI_ANALOG_OUT].probe = stih416_dac_probe;

	sti_sas_dai[STI_SAS_DAI_ANALOG_OUT].ops = drvdata->dev_data->dac_ops;

	/* Set dapms*/
	sti_sas_driver.component_driver.dapm_widgets = drvdata->dev_data->dapm_widgets;
	sti_sas_driver.component_driver.num_dapm_widgets = drvdata->dev_data->num_dapm_widgets;

	sti_sas_driver.component_driver.dapm_routes = drvdata->dev_data->dapm_routes;
	sti_sas_driver.component_driver.num_dapm_routes = drvdata->dev_data->num_dapm_routes;

	/* Store context */
	dev_set_drvdata(&pdev->dev, drvdata);

	return snd_soc_register_codec(&pdev->dev, &sti_sas_driver,
					sti_sas_dai,
					ARRAY_SIZE(sti_sas_dai));
}

static int sti_sas_driver_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);

	return 0;
}

static struct platform_driver sti_sas_platform_driver = {
	.driver = {
		.name = "sti-sas-codec",
		.of_match_table = sti_sas_dev_match,
	},
	.probe = sti_sas_driver_probe,
	.remove = sti_sas_driver_remove,
};

module_platform_driver(sti_sas_platform_driver);

MODULE_DESCRIPTION("audio codec for STMicroelectronics sti platforms");
MODULE_AUTHOR("Arnaud.pouliquen@st.com");
MODULE_LICENSE("GPL v2");