summaryrefslogtreecommitdiff
path: root/sound/soc/qcom/sdm845.c
blob: ab1bf23c21a6847eaacec2978179ee19cc9c0ee0 (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <linux/soundwire/sdw.h>
#include <uapi/linux/input-event-codes.h>
#include "common.h"
#include "qdsp6/q6afe.h"
#include "../codecs/rt5663.h"

#define DEFAULT_SAMPLE_RATE_48K		48000
#define DEFAULT_MCLK_RATE		24576000
#define TDM_BCLK_RATE		6144000
#define MI2S_BCLK_RATE		1536000
#define LEFT_SPK_TDM_TX_MASK    0x30
#define RIGHT_SPK_TDM_TX_MASK   0xC0
#define SPK_TDM_RX_MASK         0x03
#define NUM_TDM_SLOTS           8
#define SLIM_MAX_TX_PORTS 16
#define SLIM_MAX_RX_PORTS 16
#define WCD934X_DEFAULT_MCLK_RATE	9600000

struct sdm845_snd_data {
	struct snd_soc_jack jack;
	bool jack_setup;
	bool stream_prepared[SLIM_MAX_RX_PORTS];
	struct snd_soc_card *card;
	uint32_t pri_mi2s_clk_count;
	uint32_t sec_mi2s_clk_count;
	uint32_t quat_tdm_clk_count;
	struct sdw_stream_runtime *sruntime[SLIM_MAX_RX_PORTS];
};

static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};

static int sdm845_slim_snd_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct snd_soc_dai *codec_dai;
	struct sdm845_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
	u32 rx_ch[SLIM_MAX_RX_PORTS], tx_ch[SLIM_MAX_TX_PORTS];
	struct sdw_stream_runtime *sruntime;
	u32 rx_ch_cnt = 0, tx_ch_cnt = 0;
	int ret = 0, i;

	for_each_rtd_codec_dais(rtd, i, codec_dai) {
		sruntime = snd_soc_dai_get_sdw_stream(codec_dai,
						      substream->stream);
		if (sruntime != ERR_PTR(-ENOTSUPP))
			pdata->sruntime[cpu_dai->id] = sruntime;

		ret = snd_soc_dai_get_channel_map(codec_dai,
				&tx_ch_cnt, tx_ch, &rx_ch_cnt, rx_ch);

		if (ret != 0 && ret != -ENOTSUPP) {
			pr_err("failed to get codec chan map, err:%d\n", ret);
			return ret;
		} else if (ret == -ENOTSUPP) {
			/* Ignore unsupported */
			continue;
		}

		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
			ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
							  rx_ch_cnt, rx_ch);
		else
			ret = snd_soc_dai_set_channel_map(cpu_dai, tx_ch_cnt,
							  tx_ch, 0, NULL);
	}

	return 0;
}

static int sdm845_tdm_snd_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct snd_soc_dai *codec_dai;
	int ret = 0, j;
	int channels, slot_width;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		slot_width = 16;
		break;
	default:
		dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
				__func__, params_format(params));
		return -EINVAL;
	}

	channels = params_channels(params);
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
				8, slot_width);
		if (ret < 0) {
			dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
					__func__, ret);
			goto end;
		}

		ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
				channels, tdm_slot_offset);
		if (ret < 0) {
			dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
					__func__, ret);
			goto end;
		}
	} else {
		ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
				8, slot_width);
		if (ret < 0) {
			dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
					__func__, ret);
			goto end;
		}

		ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
				tdm_slot_offset, 0, NULL);
		if (ret < 0) {
			dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
					__func__, ret);
			goto end;
		}
	}

	for_each_rtd_codec_dais(rtd, j, codec_dai) {

		if (!strcmp(codec_dai->component->name_prefix, "Left")) {
			ret = snd_soc_dai_set_tdm_slot(
					codec_dai, LEFT_SPK_TDM_TX_MASK,
					SPK_TDM_RX_MASK, NUM_TDM_SLOTS,
					slot_width);
			if (ret < 0) {
				dev_err(rtd->dev,
					"DEV0 TDM slot err:%d\n", ret);
				return ret;
			}
		}

		if (!strcmp(codec_dai->component->name_prefix, "Right")) {
			ret = snd_soc_dai_set_tdm_slot(
					codec_dai, RIGHT_SPK_TDM_TX_MASK,
					SPK_TDM_RX_MASK, NUM_TDM_SLOTS,
					slot_width);
			if (ret < 0) {
				dev_err(rtd->dev,
					"DEV1 TDM slot err:%d\n", ret);
				return ret;
			}
		}
	}

end:
	return ret;
}

static int sdm845_snd_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	int ret = 0;

	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
	case PRIMARY_MI2S_TX:
		/*
		 * Use ASRC for internal clocks, as PLL rate isn't multiple
		 * of BCLK.
		 */
		rt5663_sel_asrc_clk_src(
			codec_dai->component,
			RT5663_DA_STEREO_FILTER | RT5663_AD_STEREO_FILTER,
			RT5663_CLK_SEL_I2S1_ASRC);
		ret = snd_soc_dai_set_sysclk(
			codec_dai, RT5663_SCLK_S_MCLK, DEFAULT_MCLK_RATE,
			SND_SOC_CLOCK_IN);
		if (ret < 0)
			dev_err(rtd->dev,
				"snd_soc_dai_set_sysclk err = %d\n", ret);
		break;
	case QUATERNARY_TDM_RX_0:
	case QUATERNARY_TDM_TX_0:
		ret = sdm845_tdm_snd_hw_params(substream, params);
		break;
	case SLIMBUS_0_RX...SLIMBUS_6_TX:
		ret = sdm845_slim_snd_hw_params(substream, params);
		break;
	case QUATERNARY_MI2S_RX:
		break;
	default:
		pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
		break;
	}
	return ret;
}

static void sdm845_jack_free(struct snd_jack *jack)
{
	struct snd_soc_component *component = jack->private_data;

	snd_soc_component_set_jack(component, NULL, NULL);
}

static int sdm845_dai_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_component *component;
	struct snd_soc_card *card = rtd->card;
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct sdm845_snd_data *pdata = snd_soc_card_get_drvdata(card);
	struct snd_jack *jack;
	/*
	 * Codec SLIMBUS configuration
	 * RX1, RX2, RX3, RX4, RX5, RX6, RX7, RX8, RX9, RX10, RX11, RX12, RX13
	 * TX1, TX2, TX3, TX4, TX5, TX6, TX7, TX8, TX9, TX10, TX11, TX12, TX13
	 * TX14, TX15, TX16
	 */
	unsigned int rx_ch[SLIM_MAX_RX_PORTS] = {144, 145, 146, 147, 148, 149,
					150, 151, 152, 153, 154, 155, 156};
	unsigned int tx_ch[SLIM_MAX_TX_PORTS] = {128, 129, 130, 131, 132, 133,
					    134, 135, 136, 137, 138, 139,
					    140, 141, 142, 143};
	int rval, i;


	if (!pdata->jack_setup) {
		rval = snd_soc_card_jack_new(card, "Headset Jack",
				SND_JACK_HEADSET |
				SND_JACK_HEADPHONE |
				SND_JACK_BTN_0 | SND_JACK_BTN_1 |
				SND_JACK_BTN_2 | SND_JACK_BTN_3,
				&pdata->jack, NULL, 0);

		if (rval < 0) {
			dev_err(card->dev, "Unable to add Headphone Jack\n");
			return rval;
		}

		jack = pdata->jack.jack;

		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
		pdata->jack_setup = true;
	}

	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
		jack  = pdata->jack.jack;
		component = codec_dai->component;

		jack->private_data = component;
		jack->private_free = sdm845_jack_free;
		rval = snd_soc_component_set_jack(component,
						  &pdata->jack, NULL);
		if (rval != 0 && rval != -ENOTSUPP) {
			dev_warn(card->dev, "Failed to set jack: %d\n", rval);
			return rval;
		}
		break;
	case SLIMBUS_0_RX...SLIMBUS_6_TX:
		for_each_rtd_codec_dais(rtd, i, codec_dai) {
			rval = snd_soc_dai_set_channel_map(codec_dai,
							  ARRAY_SIZE(tx_ch),
							  tx_ch,
							  ARRAY_SIZE(rx_ch),
							  rx_ch);
			if (rval != 0 && rval != -ENOTSUPP)
				return rval;

			snd_soc_dai_set_sysclk(codec_dai, 0,
					       WCD934X_DEFAULT_MCLK_RATE,
					       SNDRV_PCM_STREAM_PLAYBACK);
		}
		break;
	default:
		break;
	}

	return 0;
}


static int sdm845_snd_startup(struct snd_pcm_substream *substream)
{
	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_card *card = rtd->card;
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	int j;
	int ret;

	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
	case PRIMARY_MI2S_TX:
		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF;
		if (++(data->pri_mi2s_clk_count) == 1) {
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_MCLK_1,
				DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
				MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
		}
		snd_soc_dai_set_fmt(cpu_dai, fmt);
		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
		break;

	case SECONDARY_MI2S_TX:
		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
		if (++(data->sec_mi2s_clk_count) == 1) {
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
				MI2S_BCLK_RATE,	SNDRV_PCM_STREAM_CAPTURE);
		}
		snd_soc_dai_set_fmt(cpu_dai, fmt);
		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
		break;
	case QUATERNARY_MI2S_RX:
		snd_soc_dai_set_sysclk(cpu_dai,
			Q6AFE_LPASS_CLK_ID_QUAD_MI2S_IBIT,
			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
		snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBS_CFS);


		break;

	case QUATERNARY_TDM_RX_0:
	case QUATERNARY_TDM_TX_0:
		if (++(data->quat_tdm_clk_count) == 1) {
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
				TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
		}

		codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B;

		for_each_rtd_codec_dais(rtd, j, codec_dai) {

			if (!strcmp(codec_dai->component->name_prefix,
				    "Left")) {
				ret = snd_soc_dai_set_fmt(
						codec_dai, codec_dai_fmt);
				if (ret < 0) {
					dev_err(rtd->dev,
						"Left TDM fmt err:%d\n", ret);
					return ret;
				}
			}

			if (!strcmp(codec_dai->component->name_prefix,
				    "Right")) {
				ret = snd_soc_dai_set_fmt(
						codec_dai, codec_dai_fmt);
				if (ret < 0) {
					dev_err(rtd->dev,
						"Right TDM slot err:%d\n", ret);
					return ret;
				}
			}
		}
		break;
	case SLIMBUS_0_RX...SLIMBUS_6_TX:
		break;

	default:
		pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
		break;
	}
	return 0;
}

static void  sdm845_snd_shutdown(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_card *card = rtd->card;
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
	case PRIMARY_MI2S_TX:
		if (--(data->pri_mi2s_clk_count) == 0) {
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_MCLK_1,
				0, SNDRV_PCM_STREAM_PLAYBACK);
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
				0, SNDRV_PCM_STREAM_PLAYBACK);
		}
		break;

	case SECONDARY_MI2S_TX:
		if (--(data->sec_mi2s_clk_count) == 0) {
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
				0, SNDRV_PCM_STREAM_CAPTURE);
		}
		break;

	case QUATERNARY_TDM_RX_0:
	case QUATERNARY_TDM_TX_0:
		if (--(data->quat_tdm_clk_count) == 0) {
			snd_soc_dai_set_sysclk(cpu_dai,
				Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
				0, SNDRV_PCM_STREAM_PLAYBACK);
		}
		break;
	case SLIMBUS_0_RX...SLIMBUS_6_TX:
	case QUATERNARY_MI2S_RX:
		break;

	default:
		pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
		break;
	}
}

static int sdm845_snd_prepare(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
	int ret;

	if (!sruntime)
		return 0;

	if (data->stream_prepared[cpu_dai->id]) {
		sdw_disable_stream(sruntime);
		sdw_deprepare_stream(sruntime);
		data->stream_prepared[cpu_dai->id] = false;
	}

	ret = sdw_prepare_stream(sruntime);
	if (ret)
		return ret;

	/**
	 * NOTE: there is a strict hw requirement about the ordering of port
	 * enables and actual WSA881x PA enable. PA enable should only happen
	 * after soundwire ports are enabled if not DC on the line is
	 * accumulated resulting in Click/Pop Noise
	 * PA enable/mute are handled as part of codec DAPM and digital mute.
	 */

	ret = sdw_enable_stream(sruntime);
	if (ret) {
		sdw_deprepare_stream(sruntime);
		return ret;
	}
	data->stream_prepared[cpu_dai->id] = true;

	return ret;
}

static int sdm845_snd_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];

	if (sruntime && data->stream_prepared[cpu_dai->id]) {
		sdw_disable_stream(sruntime);
		sdw_deprepare_stream(sruntime);
		data->stream_prepared[cpu_dai->id] = false;
	}

	return 0;
}

static const struct snd_soc_ops sdm845_be_ops = {
	.hw_params = sdm845_snd_hw_params,
	.hw_free = sdm845_snd_hw_free,
	.prepare = sdm845_snd_prepare,
	.startup = sdm845_snd_startup,
	.shutdown = sdm845_snd_shutdown,
};

static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
				struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
					SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval *channels = hw_param_interval(params,
					SNDRV_PCM_HW_PARAM_CHANNELS);
	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);

	rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K;
	channels->min = channels->max = 2;
	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);

	return 0;
}

static const struct snd_soc_dapm_widget sdm845_snd_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_SPK("Left Spk", NULL),
	SND_SOC_DAPM_SPK("Right Spk", NULL),
	SND_SOC_DAPM_MIC("Int Mic", NULL),
};

static void sdm845_add_ops(struct snd_soc_card *card)
{
	struct snd_soc_dai_link *link;
	int i;

	for_each_card_prelinks(card, i, link) {
		if (link->no_pcm == 1) {
			link->ops = &sdm845_be_ops;
			link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
		}
		link->init = sdm845_dai_init;
	}
}

static int sdm845_snd_platform_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card;
	struct sdm845_snd_data *data;
	struct device *dev = &pdev->dev;
	int ret;

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

	/* Allocate the private data */
	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	card->dapm_widgets = sdm845_snd_widgets;
	card->num_dapm_widgets = ARRAY_SIZE(sdm845_snd_widgets);
	card->dev = dev;
	card->owner = THIS_MODULE;
	dev_set_drvdata(dev, card);
	ret = qcom_snd_parse_of(card);
	if (ret)
		return ret;

	data->card = card;
	snd_soc_card_set_drvdata(card, data);

	sdm845_add_ops(card);
	return devm_snd_soc_register_card(dev, card);
}

static const struct of_device_id sdm845_snd_device_id[]  = {
	{ .compatible = "qcom,sdm845-sndcard" },
	{ .compatible = "qcom,db845c-sndcard" },
	{ .compatible = "lenovo,yoga-c630-sndcard" },
	{},
};
MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);

static struct platform_driver sdm845_snd_driver = {
	.probe = sdm845_snd_platform_probe,
	.driver = {
		.name = "msm-snd-sdm845",
		.of_match_table = sdm845_snd_device_id,
	},
};
module_platform_driver(sdm845_snd_driver);

MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
MODULE_LICENSE("GPL v2");