summaryrefslogtreecommitdiff
path: root/sound/soc/samsung/aries_wm8994.c
blob: 7492bb41456c700744c00630351f9995540dfeae (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
// SPDX-License-Identifier: GPL-2.0+
#include <linux/extcon.h>
#include <linux/iio/consumer.h>
#include <linux/input-event-codes.h>
#include <linux/mfd/wm8994/registers.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/regulator/consumer.h>
#include <sound/jack.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "i2s.h"
#include "../codecs/wm8994.h"

#define ARIES_MCLK1_FREQ 24000000

struct aries_wm8994_variant {
	unsigned int modem_dai_fmt;
	bool has_fm_radio;
};

struct aries_wm8994_data {
	struct extcon_dev *usb_extcon;
	struct regulator *reg_main_micbias;
	struct regulator *reg_headset_micbias;
	struct gpio_desc *gpio_headset_detect;
	struct gpio_desc *gpio_headset_key;
	struct gpio_desc *gpio_earpath_sel;
	struct iio_channel *adc;
	const struct aries_wm8994_variant *variant;
};

/* USB dock */
static struct snd_soc_jack aries_dock;

static struct snd_soc_jack_pin dock_pins[] = {
	{
		.pin = "LINE",
		.mask = SND_JACK_LINEOUT,
	},
};

static int aries_extcon_notifier(struct notifier_block *this,
				 unsigned long connected, void *_cmd)
{
	if (connected)
		snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT,
				SND_JACK_LINEOUT);
	else
		snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT);

	return NOTIFY_DONE;
}

static struct notifier_block aries_extcon_notifier_block = {
	.notifier_call = aries_extcon_notifier,
};

/* Headset jack */
static struct snd_soc_jack aries_headset;

static struct snd_soc_jack_pin jack_pins[] = {
	{
		.pin = "HP",
		.mask = SND_JACK_HEADPHONE,
	}, {
		.pin = "Headset Mic",
		.mask = SND_JACK_MICROPHONE,
	},
};

static struct snd_soc_jack_zone headset_zones[] = {
	{
		.min_mv = 0,
		.max_mv = 241,
		.jack_type = SND_JACK_HEADPHONE,
	}, {
		.min_mv = 242,
		.max_mv = 2980,
		.jack_type = SND_JACK_HEADSET,
	}, {
		.min_mv = 2981,
		.max_mv = UINT_MAX,
		.jack_type = SND_JACK_HEADPHONE,
	},
};

static irqreturn_t headset_det_irq_thread(int irq, void *data)
{
	struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data;
	int ret = 0;
	int time_left_ms = 300;
	int adc;

	while (time_left_ms > 0) {
		if (!gpiod_get_value(priv->gpio_headset_detect)) {
			snd_soc_jack_report(&aries_headset, 0,
					SND_JACK_HEADSET);
			gpiod_set_value(priv->gpio_earpath_sel, 0);
			return IRQ_HANDLED;
		}
		msleep(20);
		time_left_ms -= 20;
	}

	/* Temporarily enable micbias and earpath selector */
	ret = regulator_enable(priv->reg_headset_micbias);
	if (ret)
		pr_err("%s failed to enable micbias: %d", __func__, ret);

	gpiod_set_value(priv->gpio_earpath_sel, 1);

	ret = iio_read_channel_processed(priv->adc, &adc);
	if (ret < 0) {
		/* failed to read ADC, so assume headphone */
		pr_err("%s failed to read ADC, assuming headphones", __func__);
		snd_soc_jack_report(&aries_headset, SND_JACK_HEADPHONE,
				SND_JACK_HEADSET);
	} else {
		snd_soc_jack_report(&aries_headset,
				snd_soc_jack_get_type(&aries_headset, adc),
				SND_JACK_HEADSET);
	}

	ret = regulator_disable(priv->reg_headset_micbias);
	if (ret)
		pr_err("%s failed disable micbias: %d", __func__, ret);

	/* Disable earpath selector when no mic connected */
	if (!(aries_headset.status & SND_JACK_MICROPHONE))
		gpiod_set_value(priv->gpio_earpath_sel, 0);

	return IRQ_HANDLED;
}

static int headset_button_check(void *data)
{
	struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data;

	/* Filter out keypresses when 4 pole jack not detected */
	if (gpiod_get_value_cansleep(priv->gpio_headset_key) &&
			aries_headset.status & SND_JACK_MICROPHONE)
		return SND_JACK_BTN_0;

	return 0;
}

static struct snd_soc_jack_gpio headset_button_gpio[] = {
	{
		.name = "Media Button",
		.report = SND_JACK_BTN_0,
		.debounce_time  = 30,
		.jack_status_check = headset_button_check,
	},
};

static int aries_spk_cfg(struct snd_soc_dapm_widget *w,
			struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_card *card = w->dapm->card;
	struct snd_soc_pcm_runtime *rtd;
	struct snd_soc_component *component;
	int ret = 0;

	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
	component = asoc_rtd_to_codec(rtd, 0)->component;

	/**
	 * We have an odd setup - the SPKMODE pin is pulled up so
	 * we only have access to the left side SPK configs,
	 * but SPKOUTR isn't bridged so when playing back in
	 * stereo, we only get the left hand channel.  The only
	 * option we're left with is to force the AIF into mono
	 * mode.
	 */
	switch (event) {
	case SND_SOC_DAPM_POST_PMU:
		ret = snd_soc_component_update_bits(component,
				WM8994_AIF1_DAC1_FILTERS_1,
				WM8994_AIF1DAC1_MONO, WM8994_AIF1DAC1_MONO);
		break;
	case SND_SOC_DAPM_PRE_PMD:
		ret = snd_soc_component_update_bits(component,
				WM8994_AIF1_DAC1_FILTERS_1,
				WM8994_AIF1DAC1_MONO, 0);
		break;
	}

	return ret;
}

static int aries_main_bias(struct snd_soc_dapm_widget *w,
			  struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_card *card = w->dapm->card;
	struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
	int ret = 0;

	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		ret = regulator_enable(priv->reg_main_micbias);
		break;
	case SND_SOC_DAPM_POST_PMD:
		ret = regulator_disable(priv->reg_main_micbias);
		break;
	}

	return ret;
}

static int aries_headset_bias(struct snd_soc_dapm_widget *w,
			  struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_card *card = w->dapm->card;
	struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
	int ret = 0;

	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		ret = regulator_enable(priv->reg_headset_micbias);
		break;
	case SND_SOC_DAPM_POST_PMD:
		ret = regulator_disable(priv->reg_headset_micbias);
		break;
	}

	return ret;
}

static const struct snd_kcontrol_new aries_controls[] = {
	SOC_DAPM_PIN_SWITCH("Modem In"),
	SOC_DAPM_PIN_SWITCH("Modem Out"),
};

static const struct snd_soc_dapm_widget aries_dapm_widgets[] = {
	SND_SOC_DAPM_HP("HP", NULL),

	SND_SOC_DAPM_SPK("SPK", aries_spk_cfg),
	SND_SOC_DAPM_SPK("RCV", NULL),

	SND_SOC_DAPM_LINE("LINE", NULL),

	SND_SOC_DAPM_MIC("Main Mic", aries_main_bias),
	SND_SOC_DAPM_MIC("Headset Mic", aries_headset_bias),

	SND_SOC_DAPM_MIC("Bluetooth Mic", NULL),
	SND_SOC_DAPM_SPK("Bluetooth SPK", NULL),

	SND_SOC_DAPM_LINE("Modem In", NULL),
	SND_SOC_DAPM_LINE("Modem Out", NULL),

	/* This must be last as it is conditionally not used */
	SND_SOC_DAPM_LINE("FM In", NULL),
};

static int aries_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	unsigned int pll_out;
	int ret;

	/* AIF1CLK should be >=3MHz for optimal performance */
	if (params_width(params) == 24)
		pll_out = params_rate(params) * 384;
	else if (params_rate(params) == 8000 || params_rate(params) == 11025)
		pll_out = params_rate(params) * 512;
	else
		pll_out = params_rate(params) * 256;

	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
				ARIES_MCLK1_FREQ, pll_out);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
				pll_out, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

static int aries_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	int ret;

	/* Switch sysclk to MCLK1 */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1,
				ARIES_MCLK1_FREQ, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* Stop PLL */
	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
				ARIES_MCLK1_FREQ, 0);
	if (ret < 0)
		return ret;

	return 0;
}

/*
 * Main DAI operations
 */
static const struct snd_soc_ops aries_ops = {
	.hw_params = aries_hw_params,
	.hw_free = aries_hw_free,
};

static int aries_baseband_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	unsigned int pll_out;
	int ret;

	pll_out = 8000 * 512;

	/* Set the codec FLL */
	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL2, WM8994_FLL_SRC_MCLK1,
			ARIES_MCLK1_FREQ, pll_out);
	if (ret < 0)
		return ret;

	/* Set the codec system clock */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL2,
			pll_out, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

static int aries_late_probe(struct snd_soc_card *card)
{
	struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
	int ret, irq;

	ret = snd_soc_card_jack_new_pins(card, "Dock", SND_JACK_LINEOUT,
			&aries_dock, dock_pins, ARRAY_SIZE(dock_pins));
	if (ret)
		return ret;

	ret = devm_extcon_register_notifier(card->dev,
			priv->usb_extcon, EXTCON_JACK_LINE_OUT,
			&aries_extcon_notifier_block);
	if (ret)
		return ret;

	if (extcon_get_state(priv->usb_extcon,
			EXTCON_JACK_LINE_OUT) > 0)
		snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT,
				SND_JACK_LINEOUT);
	else
		snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT);

	ret = snd_soc_card_jack_new_pins(card, "Headset",
			SND_JACK_HEADSET | SND_JACK_BTN_0,
			&aries_headset,
			jack_pins, ARRAY_SIZE(jack_pins));
	if (ret)
		return ret;

	ret = snd_soc_jack_add_zones(&aries_headset, ARRAY_SIZE(headset_zones),
			headset_zones);
	if (ret)
		return ret;

	irq = gpiod_to_irq(priv->gpio_headset_detect);
	if (irq < 0) {
		dev_err(card->dev, "Failed to map headset detect gpio to irq");
		return -EINVAL;
	}

	ret = devm_request_threaded_irq(card->dev, irq, NULL,
			headset_det_irq_thread,
			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
			IRQF_ONESHOT, "headset_detect", priv);
	if (ret) {
		dev_err(card->dev, "Failed to request headset detect irq");
		return ret;
	}

	headset_button_gpio[0].data = priv;
	headset_button_gpio[0].desc = priv->gpio_headset_key;

	snd_jack_set_key(aries_headset.jack, SND_JACK_BTN_0, KEY_MEDIA);

	return snd_soc_jack_add_gpios(&aries_headset,
			ARRAY_SIZE(headset_button_gpio), headset_button_gpio);
}

static const struct snd_soc_pcm_stream baseband_params = {
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	.rate_min = 8000,
	.rate_max = 8000,
	.channels_min = 1,
	.channels_max = 1,
};

static const struct snd_soc_pcm_stream bluetooth_params = {
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	.rate_min = 8000,
	.rate_max = 8000,
	.channels_min = 1,
	.channels_max = 2,
};

static const struct snd_soc_dapm_widget aries_modem_widgets[] = {
	SND_SOC_DAPM_INPUT("Modem RX"),
	SND_SOC_DAPM_OUTPUT("Modem TX"),
};

static const struct snd_soc_dapm_route aries_modem_routes[] = {
	{ "Modem Capture", NULL, "Modem RX" },
	{ "Modem TX", NULL, "Modem Playback" },
};

static const struct snd_soc_component_driver aries_component = {
	.name			= "aries-audio",
	.dapm_widgets		= aries_modem_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(aries_modem_widgets),
	.dapm_routes		= aries_modem_routes,
	.num_dapm_routes	= ARRAY_SIZE(aries_modem_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
};

static struct snd_soc_dai_driver aries_ext_dai[] = {
	{
		.name = "Voice call",
		.playback = {
			.stream_name = "Modem Playback",
			.channels_min = 1,
			.channels_max = 1,
			.rate_min = 8000,
			.rate_max = 8000,
			.rates = SNDRV_PCM_RATE_8000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
		},
		.capture = {
			.stream_name = "Modem Capture",
			.channels_min = 1,
			.channels_max = 1,
			.rate_min = 8000,
			.rate_max = 8000,
			.rates = SNDRV_PCM_RATE_8000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
		},
	},
};

SND_SOC_DAILINK_DEFS(aif1,
	DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
	DAILINK_COMP_ARRAY(COMP_EMPTY()));

SND_SOC_DAILINK_DEFS(baseband,
	DAILINK_COMP_ARRAY(COMP_CPU("Voice call")),
	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")));

SND_SOC_DAILINK_DEFS(bluetooth,
	DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")));

static struct snd_soc_dai_link aries_dai[] = {
	{
		.name = "WM8994 AIF1",
		.stream_name = "HiFi",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBM_CFM,
		.ops = &aries_ops,
		SND_SOC_DAILINK_REG(aif1),
	},
	{
		.name = "WM8994 AIF2",
		.stream_name = "Baseband",
		.init = &aries_baseband_init,
		.c2c_params = &baseband_params,
		.num_c2c_params = 1,
		.ignore_suspend = 1,
		SND_SOC_DAILINK_REG(baseband),
	},
	{
		.name = "WM8994 AIF3",
		.stream_name = "Bluetooth",
		.c2c_params = &bluetooth_params,
		.num_c2c_params = 1,
		.ignore_suspend = 1,
		SND_SOC_DAILINK_REG(bluetooth),
	},
};

static struct snd_soc_card aries_card = {
	.name = "ARIES",
	.owner = THIS_MODULE,
	.dai_link = aries_dai,
	.num_links = ARRAY_SIZE(aries_dai),
	.controls = aries_controls,
	.num_controls = ARRAY_SIZE(aries_controls),
	.dapm_widgets = aries_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(aries_dapm_widgets),
	.late_probe = aries_late_probe,
};

static const struct aries_wm8994_variant fascinate4g_variant = {
	.modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS
		| SND_SOC_DAIFMT_IB_NF,
	.has_fm_radio = false,
};

static const struct aries_wm8994_variant aries_variant = {
	.modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM
		| SND_SOC_DAIFMT_IB_NF,
	.has_fm_radio = true,
};

static const struct of_device_id samsung_wm8994_of_match[] = {
	{
		.compatible = "samsung,fascinate4g-wm8994",
		.data = &fascinate4g_variant,
	},
	{
		.compatible = "samsung,aries-wm8994",
		.data = &aries_variant,
	},
	{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);

static int aries_audio_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct device_node *cpu, *codec, *extcon_np;
	struct device *dev = &pdev->dev;
	struct snd_soc_card *card = &aries_card;
	struct aries_wm8994_data *priv;
	struct snd_soc_dai_link *dai_link;
	const struct of_device_id *match;
	enum iio_chan_type channel_type;
	int ret, i;

	if (!np)
		return -EINVAL;

	card->dev = dev;

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

	snd_soc_card_set_drvdata(card, priv);

	match = of_match_node(samsung_wm8994_of_match, np);
	priv->variant = match->data;

	/* Remove FM widget if not present */
	if (!priv->variant->has_fm_radio)
		card->num_dapm_widgets--;

	priv->reg_main_micbias = devm_regulator_get(dev, "main-micbias");
	if (IS_ERR(priv->reg_main_micbias)) {
		dev_err(dev, "Failed to get main micbias regulator\n");
		return PTR_ERR(priv->reg_main_micbias);
	}

	priv->reg_headset_micbias = devm_regulator_get(dev, "headset-micbias");
	if (IS_ERR(priv->reg_headset_micbias)) {
		dev_err(dev, "Failed to get headset micbias regulator\n");
		return PTR_ERR(priv->reg_headset_micbias);
	}

	priv->gpio_earpath_sel = devm_gpiod_get(dev, "earpath-sel",
			GPIOD_OUT_LOW);
	if (IS_ERR(priv->gpio_earpath_sel)) {
		dev_err(dev, "Failed to get earpath selector gpio");
		return PTR_ERR(priv->gpio_earpath_sel);
	}

	extcon_np = of_parse_phandle(np, "extcon", 0);
	priv->usb_extcon = extcon_find_edev_by_node(extcon_np);
	of_node_put(extcon_np);
	if (IS_ERR(priv->usb_extcon))
		return dev_err_probe(dev, PTR_ERR(priv->usb_extcon),
				     "Failed to get extcon device");

	priv->adc = devm_iio_channel_get(dev, "headset-detect");
	if (IS_ERR(priv->adc))
		return dev_err_probe(dev, PTR_ERR(priv->adc),
				     "Failed to get ADC channel");

	ret = iio_get_channel_type(priv->adc, &channel_type);
	if (ret)
		return dev_err_probe(dev, ret,
				     "Failed to get ADC channel type");
	if (channel_type != IIO_VOLTAGE)
		return -EINVAL;

	priv->gpio_headset_key = devm_gpiod_get(dev, "headset-key",
			GPIOD_IN);
	if (IS_ERR(priv->gpio_headset_key)) {
		dev_err(dev, "Failed to get headset key gpio");
		return PTR_ERR(priv->gpio_headset_key);
	}

	priv->gpio_headset_detect = devm_gpiod_get(dev,
			"headset-detect", GPIOD_IN);
	if (IS_ERR(priv->gpio_headset_detect)) {
		dev_err(dev, "Failed to get headset detect gpio");
		return PTR_ERR(priv->gpio_headset_detect);
	}

	/* Update card-name if provided through DT, else use default name */
	snd_soc_of_parse_card_name(card, "model");

	ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
	if (ret < 0) {
		dev_err(dev, "Audio routing invalid/unspecified\n");
		return ret;
	}

	aries_dai[1].dai_fmt = priv->variant->modem_dai_fmt;

	cpu = of_get_child_by_name(dev->of_node, "cpu");
	if (!cpu)
		return -EINVAL;

	codec = of_get_child_by_name(dev->of_node, "codec");
	if (!codec) {
		ret = -EINVAL;
		goto out;
	}

	for_each_card_prelinks(card, i, dai_link) {
		dai_link->codecs->of_node = of_parse_phandle(codec,
				"sound-dai", 0);
		if (!dai_link->codecs->of_node) {
			ret = -EINVAL;
			goto out;
		}
	}

	/* Set CPU and platform of_node for main DAI */
	aries_dai[0].cpus->of_node = of_parse_phandle(cpu,
			"sound-dai", 0);
	if (!aries_dai[0].cpus->of_node) {
		ret = -EINVAL;
		goto out;
	}

	aries_dai[0].platforms->of_node = aries_dai[0].cpus->of_node;

	/* Set CPU of_node for BT DAI */
	aries_dai[2].cpus->of_node = of_parse_phandle(cpu,
			"sound-dai", 1);
	if (!aries_dai[2].cpus->of_node) {
		ret = -EINVAL;
		goto out;
	}

	ret = devm_snd_soc_register_component(dev, &aries_component,
				aries_ext_dai, ARRAY_SIZE(aries_ext_dai));
	if (ret < 0) {
		dev_err(dev, "Failed to register component: %d\n", ret);
		goto out;
	}

	ret = devm_snd_soc_register_card(dev, card);
	if (ret)
		dev_err(dev, "snd_soc_register_card() failed:%d\n", ret);

out:
	of_node_put(cpu);
	of_node_put(codec);

	return ret;
}

static struct platform_driver aries_audio_driver = {
	.driver		= {
		.name	= "aries-audio-wm8994",
		.of_match_table = of_match_ptr(samsung_wm8994_of_match),
		.pm	= &snd_soc_pm_ops,
	},
	.probe		= aries_audio_probe,
};

module_platform_driver(aries_audio_driver);

MODULE_DESCRIPTION("ALSA SoC ARIES WM8994");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:aries-audio-wm8994");