summaryrefslogtreecommitdiffstats
path: root/sound/soc/fsl/imx-card.c
blob: 0e18ccabe28c315f34f073bc7ec15e5eeefebbe2 (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
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017-2021 NXP

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <linux/of.h>
#include <linux/i2c.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include <sound/pcm.h>
#include <sound/soc-dapm.h>
#include <sound/simple_card_utils.h>

#include "fsl_sai.h"

#define IMX_CARD_MCLK_22P5792MHZ  22579200
#define IMX_CARD_MCLK_24P576MHZ   24576000

enum codec_type {
	CODEC_DUMMY = 0,
	CODEC_AK5558 = 1,
	CODEC_AK4458,
	CODEC_AK4497,
	CODEC_AK5552,
};

/*
 * Mapping LRCK fs and frame width, table 3 & 4 in datasheet
 * @rmin: min rate
 * @rmax: max rate
 * @wmin: min frame ratio
 * @wmax: max frame ratio
 */
struct imx_akcodec_fs_mul {
	unsigned int rmin;
	unsigned int rmax;
	unsigned int wmin;
	unsigned int wmax;
};

/*
 * Mapping TDM mode and frame width
 */
struct imx_akcodec_tdm_fs_mul {
	unsigned int min;
	unsigned int max;
	unsigned int mul;
};

/*
 * struct imx_card_plat_data - specific info for codecs
 *
 * @fs_mul: ratio of mclk/fs for normal mode
 * @tdm_fs_mul: ratio of mclk/fs for tdm mode
 * @support_rates: supported sample rate
 * @support_tdm_rates: supported sample rate for tdm mode
 * @support_channels: supported channels
 * @support_tdm_channels: supported channels for tdm mode
 * @num_fs_mul: ARRAY_SIZE of fs_mul
 * @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul
 * @num_rates: ARRAY_SIZE of support_rates
 * @num_tdm_rates: ARRAY_SIZE of support_tdm_rates
 * @num_channels: ARRAY_SIZE of support_channels
 * @num_tdm_channels: ARRAY_SIZE of support_tdm_channels
 * @type: codec type
 */
struct imx_card_plat_data {
	struct imx_akcodec_fs_mul  *fs_mul;
	struct imx_akcodec_tdm_fs_mul  *tdm_fs_mul;
	const u32 *support_rates;
	const u32 *support_tdm_rates;
	const u32 *support_channels;
	const u32 *support_tdm_channels;
	unsigned int num_fs_mul;
	unsigned int num_tdm_fs_mul;
	unsigned int num_rates;
	unsigned int num_tdm_rates;
	unsigned int num_channels;
	unsigned int num_tdm_channels;
	unsigned int num_codecs;
	enum codec_type type;
};

/*
 * struct dai_link_data - specific info for dai link
 *
 * @slots: slot number
 * @slot_width: slot width value
 * @cpu_sysclk_id: sysclk id for cpu dai
 * @one2one_ratio: true if mclk equal to bclk
 */
struct dai_link_data {
	unsigned int slots;
	unsigned int slot_width;
	unsigned int cpu_sysclk_id;
	bool one2one_ratio;
};

/*
 * struct imx_card_data - platform device data
 *
 * @plat_data: pointer of imx_card_plat_data
 * @dapm_routes: pointer of dapm_routes
 * @link_data: private data for dai link
 * @card: card instance
 * @num_dapm_routes: number of dapm_routes
 * @asrc_rate: asrc rates
 * @asrc_format: asrc format
 */
struct imx_card_data {
	struct imx_card_plat_data *plat_data;
	struct snd_soc_dapm_route *dapm_routes;
	struct dai_link_data *link_data;
	struct snd_soc_card card;
	int num_dapm_routes;
	u32 asrc_rate;
	snd_pcm_format_t asrc_format;
};

static struct imx_akcodec_fs_mul ak4458_fs_mul[] = {
	/* Normal, < 32kHz */
	{ .rmin = 8000,   .rmax = 24000,  .wmin = 256,  .wmax = 1024, },
	/* Normal, 32kHz */
	{ .rmin = 32000,  .rmax = 32000,  .wmin = 256,  .wmax = 1024, },
	/* Normal */
	{ .rmin = 44100,  .rmax = 48000,  .wmin = 256,  .wmax = 768,  },
	/* Double */
	{ .rmin = 88200,  .rmax = 96000,  .wmin = 256,  .wmax = 512,  },
	/* Quad */
	{ .rmin = 176400, .rmax = 192000, .wmin = 128,  .wmax = 256,  },
	/* Oct */
	{ .rmin = 352800, .rmax = 384000, .wmin = 32,   .wmax = 128,  },
	/* Hex */
	{ .rmin = 705600, .rmax = 768000, .wmin = 16,   .wmax = 64,   },
};

static struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = {
	/*
	 * Table 13	- Audio Interface Format
	 * For TDM mode, MCLK should is set to
	 * obtained from 2 * slots * slot_width
	 */
	{ .min = 128,	.max = 128,	.mul = 256  }, /* TDM128 */
	{ .min = 256,	.max = 256,	.mul = 512  }, /* TDM256 */
	{ .min = 512,	.max = 512,	.mul = 1024  }, /* TDM512 */
};

static struct imx_akcodec_fs_mul ak4497_fs_mul[] = {
	/**
	 * Table 7      - mapping multiplier and speed mode
	 * Tables 8 & 9 - mapping speed mode and LRCK fs
	 */
	{ .rmin = 8000,   .rmax = 32000,  .wmin = 256,  .wmax = 1024, }, /* Normal, <= 32kHz */
	{ .rmin = 44100,  .rmax = 48000,  .wmin = 256,  .wmax = 512, }, /* Normal */
	{ .rmin = 88200,  .rmax = 96000,  .wmin = 256,  .wmax = 256, }, /* Double */
	{ .rmin = 176400, .rmax = 192000, .wmin = 128,  .wmax = 128, }, /* Quad */
	{ .rmin = 352800, .rmax = 384000, .wmin = 128,  .wmax = 128, }, /* Oct */
	{ .rmin = 705600, .rmax = 768000, .wmin = 64,   .wmax = 64, }, /* Hex */
};

/*
 * Auto MCLK selection based on LRCK for Normal Mode
 * (Table 4 from datasheet)
 */
static struct imx_akcodec_fs_mul ak5558_fs_mul[] = {
	{ .rmin = 8000,   .rmax = 32000,  .wmin = 512,  .wmax = 1024, },
	{ .rmin = 44100,  .rmax = 48000,  .wmin = 512,  .wmax = 512, },
	{ .rmin = 88200,  .rmax = 96000,  .wmin = 256,  .wmax = 256, },
	{ .rmin = 176400, .rmax = 192000, .wmin = 128,  .wmax = 128, },
	{ .rmin = 352800, .rmax = 384000, .wmin = 64,   .wmax = 64, },
	{ .rmin = 705600, .rmax = 768000, .wmin = 32,   .wmax = 32, },
};

/*
 * MCLK and BCLK selection based on TDM mode
 * because of SAI we also add the restriction: MCLK >= 2 * BCLK
 * (Table 9 from datasheet)
 */
static struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = {
	{ .min = 128,	.max = 128,	.mul = 256 },
	{ .min = 256,	.max = 256,	.mul = 512 },
	{ .min = 512,	.max = 512,	.mul = 1024 },
};

static const u32 akcodec_rates[] = {
	8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
	96000, 176400, 192000, 352800, 384000, 705600, 768000,
};

static const u32 akcodec_tdm_rates[] = {
	8000, 16000, 32000, 48000, 96000,
};

static const u32 ak4458_channels[] = {
	1, 2, 4, 6, 8, 10, 12, 14, 16,
};

static const u32 ak4458_tdm_channels[] = {
	1, 2, 3, 4, 5, 6, 7, 8, 16,
};

static const u32 ak5558_channels[] = {
	1, 2, 4, 6, 8,
};

static const u32 ak5558_tdm_channels[] = {
	1, 2, 3, 4, 5, 6, 7, 8,
};

static bool format_is_dsd(struct snd_pcm_hw_params *params)
{
	snd_pcm_format_t format = params_format(params);

	switch (format) {
	case SNDRV_PCM_FORMAT_DSD_U8:
	case SNDRV_PCM_FORMAT_DSD_U16_LE:
	case SNDRV_PCM_FORMAT_DSD_U16_BE:
	case SNDRV_PCM_FORMAT_DSD_U32_LE:
	case SNDRV_PCM_FORMAT_DSD_U32_BE:
		return true;
	default:
		return false;
	}
}

static bool format_is_tdm(struct dai_link_data *link_data)
{
	if (link_data->slots > 2)
		return true;
	else
		return false;
}

static bool codec_is_akcodec(unsigned int type)
{
	switch (type) {
	case CODEC_AK4458:
	case CODEC_AK4497:
	case CODEC_AK5558:
	case CODEC_AK5552:
		return true;
	default:
		break;
	}
	return false;
}

static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream,
					   struct snd_pcm_hw_params *params,
					   int slots, int slot_width)
{
	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
	struct imx_card_data *data = snd_soc_card_get_drvdata(rtd->card);
	const struct imx_card_plat_data *plat_data = data->plat_data;
	struct dai_link_data *link_data = &data->link_data[rtd->num];
	unsigned int width = slots * slot_width;
	unsigned int rate = params_rate(params);
	int i;

	if (format_is_tdm(link_data)) {
		for (i = 0; i < plat_data->num_tdm_fs_mul; i++) {
			/* min = max = slots * slots_width */
			if (width != plat_data->tdm_fs_mul[i].min)
				continue;
			return rate * plat_data->tdm_fs_mul[i].mul;
		}
	} else {
		for (i = 0; i < plat_data->num_fs_mul; i++) {
			if (rate >= plat_data->fs_mul[i].rmin &&
			    rate <= plat_data->fs_mul[i].rmax) {
				width = max(width, plat_data->fs_mul[i].wmin);
				width = min(width, plat_data->fs_mul[i].wmax);

				/* Adjust SAI bclk:mclk ratio */
				width *= link_data->one2one_ratio ? 1 : 2;

				return rate * width;
			}
		}
	}

	/* Let DAI manage clk frequency by default */
	return 0;
}

static int imx_aif_hw_params(struct snd_pcm_substream *substream,
			     struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
	struct snd_soc_card *card = rtd->card;
	struct imx_card_data *data = snd_soc_card_get_drvdata(card);
	struct dai_link_data *link_data = &data->link_data[rtd->num];
	struct imx_card_plat_data *plat_data = data->plat_data;
	struct device *dev = card->dev;
	struct snd_soc_dai *codec_dai;
	unsigned long mclk_freq;
	unsigned int fmt = rtd->dai_link->dai_fmt;
	unsigned int slots, slot_width;
	int ret, i;

	slots = link_data->slots;
	slot_width = link_data->slot_width;

	if (!format_is_tdm(link_data)) {
		if (format_is_dsd(params)) {
			slots = 1;
			slot_width = params_width(params);
			fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) |
			      SND_SOC_DAIFMT_PDM;
		} else {
			slots = 2;
			slot_width = params_physical_width(params);
			fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) |
			      SND_SOC_DAIFMT_I2S;
		}
	}

	ret = snd_soc_dai_set_fmt(cpu_dai, snd_soc_daifmt_clock_provider_flipped(fmt));
	if (ret && ret != -ENOTSUPP) {
		dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
		return ret;
	}
	ret = snd_soc_dai_set_tdm_slot(cpu_dai,
				       BIT(slots) - 1,
				       BIT(slots) - 1,
				       slots, slot_width);
	if (ret && ret != -ENOTSUPP) {
		dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
		return ret;
	}

	for_each_rtd_codec_dais(rtd, i, codec_dai) {
		ret = snd_soc_dai_set_fmt(codec_dai, fmt);
		if (ret && ret != -ENOTSUPP) {
			dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret);
			return ret;
		}

		ret = snd_soc_dai_set_tdm_slot(codec_dai,
					       BIT(slots) - 1,
					       BIT(slots) - 1,
					       slots, slot_width);
		if (ret && ret != -ENOTSUPP) {
			dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret);
			return ret;
		}
	}

	/* Set MCLK freq */
	if (codec_is_akcodec(plat_data->type))
		mclk_freq = akcodec_get_mclk_rate(substream, params, slots, slot_width);
	else
		mclk_freq = params_rate(params) * slots * slot_width;

	if (format_is_dsd(params)) {
		/* Use the maximum freq from DSD512 (512*44100 = 22579200) */
		if (!(params_rate(params) % 11025))
			mclk_freq = IMX_CARD_MCLK_22P5792MHZ;
		else
			mclk_freq = IMX_CARD_MCLK_24P576MHZ;
	}

	ret = snd_soc_dai_set_sysclk(cpu_dai, link_data->cpu_sysclk_id, mclk_freq,
				     SND_SOC_CLOCK_OUT);
	if (ret && ret != -ENOTSUPP) {
		dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n", mclk_freq, ret);
		return ret;
	}

	return 0;
}

static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r)
{
	struct dai_link_data *link_data = r->private;
	struct snd_interval t = { .min = 8000, .max = 8000, };
	unsigned long mclk_freq;
	unsigned int fs;
	int i;

	fs = hw_param_interval(p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
	fs *= link_data->slots;

	/* Identify maximum supported rate */
	for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) {
		mclk_freq = fs * akcodec_rates[i];
		/* Adjust SAI bclk:mclk ratio */
		mclk_freq *= link_data->one2one_ratio ? 1 : 2;

		/* Skip rates for which MCLK is beyond supported value */
		if (mclk_freq > 36864000)
			continue;

		if (t.max < akcodec_rates[i])
			t.max = akcodec_rates[i];
	}

	return snd_interval_refine(hw_param_interval(p, r->var), &t);
}

static int imx_aif_startup(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
	struct snd_soc_card *card = rtd->card;
	struct imx_card_data *data = snd_soc_card_get_drvdata(card);
	struct dai_link_data *link_data = &data->link_data[rtd->num];
	static struct snd_pcm_hw_constraint_list constraint_rates;
	static struct snd_pcm_hw_constraint_list constraint_channels;
	int ret = 0;

	if (format_is_tdm(link_data)) {
		constraint_channels.list = data->plat_data->support_tdm_channels;
		constraint_channels.count = data->plat_data->num_tdm_channels;
		constraint_rates.list = data->plat_data->support_tdm_rates;
		constraint_rates.count = data->plat_data->num_tdm_rates;
	} else {
		constraint_channels.list = data->plat_data->support_channels;
		constraint_channels.count = data->plat_data->num_channels;
		constraint_rates.list = data->plat_data->support_rates;
		constraint_rates.count = data->plat_data->num_rates;
	}

	if (constraint_channels.count) {
		ret = snd_pcm_hw_constraint_list(runtime, 0,
						 SNDRV_PCM_HW_PARAM_CHANNELS,
						 &constraint_channels);
		if (ret)
			return ret;
	}

	if (constraint_rates.count) {
		ret = snd_pcm_hw_constraint_list(runtime, 0,
						 SNDRV_PCM_HW_PARAM_RATE,
						 &constraint_rates);
		if (ret)
			return ret;
	}

	if (data->plat_data->type == CODEC_AK5558)
		ret = snd_pcm_hw_rule_add(substream->runtime, 0,
					  SNDRV_PCM_HW_PARAM_RATE,
					  ak5558_hw_rule_rate, link_data,
					  SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1);

	return ret;
}

static const struct snd_soc_ops imx_aif_ops = {
	.hw_params = imx_aif_hw_params,
	.startup = imx_aif_startup,
};

static const struct snd_soc_ops imx_aif_ops_be = {
	.hw_params = imx_aif_hw_params,
};

static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
			      struct snd_pcm_hw_params *params)
{
	struct snd_soc_card *card = rtd->card;
	struct imx_card_data *data = snd_soc_card_get_drvdata(card);
	struct snd_interval *rate;
	struct snd_mask *mask;

	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
	rate->max = data->asrc_rate;
	rate->min = data->asrc_rate;

	mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
	snd_mask_none(mask);
	snd_mask_set(mask, (__force unsigned int)data->asrc_format);

	return 0;
}

static int imx_card_parse_of(struct imx_card_data *data)
{
	struct imx_card_plat_data *plat_data = data->plat_data;
	struct snd_soc_card *card = &data->card;
	struct snd_soc_dai_link_component *dlc;
	struct device_node *platform = NULL;
	struct device_node *codec = NULL;
	struct device_node *cpu = NULL;
	struct device_node *np;
	struct device *dev = card->dev;
	struct snd_soc_dai_link *link;
	struct dai_link_data *link_data;
	struct of_phandle_args args;
	int ret, num_links;
	u32 asrc_fmt = 0;
	u32 width;

	ret = snd_soc_of_parse_card_name(card, "model");
	if (ret) {
		dev_err(dev, "Error parsing card name: %d\n", ret);
		return ret;
	}

	/* DAPM routes */
	if (of_property_read_bool(dev->of_node, "audio-routing")) {
		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
		if (ret)
			return ret;
	}

	/* Populate links */
	num_links = of_get_child_count(dev->of_node);

	/* Allocate the DAI link array */
	card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
	if (!card->dai_link)
		return -ENOMEM;

	data->link_data = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
	if (!data->link_data)
		return -ENOMEM;

	card->num_links = num_links;
	link = card->dai_link;
	link_data = data->link_data;

	for_each_child_of_node(dev->of_node, np) {
		dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
		if (!dlc) {
			ret = -ENOMEM;
			goto err_put_np;
		}

		link->cpus	= &dlc[0];
		link->platforms	= &dlc[1];

		link->num_cpus		= 1;
		link->num_platforms	= 1;

		ret = of_property_read_string(np, "link-name", &link->name);
		if (ret) {
			dev_err(card->dev, "error getting codec dai_link name\n");
			goto err_put_np;
		}

		cpu = of_get_child_by_name(np, "cpu");
		if (!cpu) {
			dev_err(dev, "%s: Can't find cpu DT node\n", link->name);
			ret = -EINVAL;
			goto err;
		}

		ret = snd_soc_of_get_dlc(cpu, &args, link->cpus, 0);
		if (ret) {
			dev_err_probe(card->dev, ret,
				      "%s: error getting cpu dai info\n", link->name);
			goto err;
		}

		if (of_node_name_eq(args.np, "sai")) {
			/* sai sysclk id */
			link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1;

			/* sai may support mclk/bclk = 1 */
			if (of_property_read_bool(np, "fsl,mclk-equal-bclk")) {
				link_data->one2one_ratio = true;
			} else {
				int i;

				/*
				 * i.MX8MQ don't support one2one ratio, then
				 * with ak4497 only 16bit case is supported.
				 */
				for (i = 0; i < ARRAY_SIZE(ak4497_fs_mul); i++) {
					if (ak4497_fs_mul[i].rmin == 705600 &&
					    ak4497_fs_mul[i].rmax == 768000) {
						ak4497_fs_mul[i].wmin = 32;
						ak4497_fs_mul[i].wmax = 32;
					}
				}
			}
		}

		link->platforms->of_node = link->cpus->of_node;
		link->id = args.args[0];

		codec = of_get_child_by_name(np, "codec");
		if (codec) {
			ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
			if (ret < 0) {
				dev_err_probe(dev, ret, "%s: codec dai not found\n",
						link->name);
				goto err;
			}

			plat_data->num_codecs = link->num_codecs;

			/* Check the akcodec type */
			if (!strcmp(link->codecs->dai_name, "ak4458-aif"))
				plat_data->type = CODEC_AK4458;
			else if (!strcmp(link->codecs->dai_name, "ak4497-aif"))
				plat_data->type = CODEC_AK4497;
			else if (!strcmp(link->codecs->dai_name, "ak5558-aif"))
				plat_data->type = CODEC_AK5558;
			else if (!strcmp(link->codecs->dai_name, "ak5552-aif"))
				plat_data->type = CODEC_AK5552;

		} else {
			link->codecs	 = &snd_soc_dummy_dlc;
			link->num_codecs = 1;
		}

		if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) {
			/* DPCM frontend */
			link->dynamic = 1;
			link->dpcm_merged_chan = 1;

			ret = of_property_read_u32(args.np, "fsl,asrc-rate", &data->asrc_rate);
			if (ret) {
				dev_err(dev, "failed to get output rate\n");
				ret = -EINVAL;
				goto err;
			}

			ret = of_property_read_u32(args.np, "fsl,asrc-format", &asrc_fmt);
			data->asrc_format = (__force snd_pcm_format_t)asrc_fmt;
			if (ret) {
				/* Fallback to old binding; translate to asrc_format */
				ret = of_property_read_u32(args.np, "fsl,asrc-width", &width);
				if (ret) {
					dev_err(dev,
						"failed to decide output format\n");
					goto err;
				}

				if (width == 24)
					data->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
				else
					data->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
			}
		} else if (!strncmp(link->name, "HiFi-ASRC-BE", 12)) {
			/* DPCM backend */
			link->no_pcm = 1;
			link->platforms->of_node = NULL;
			link->platforms->name = "snd-soc-dummy";

			link->be_hw_params_fixup = be_hw_params_fixup;
			link->ops = &imx_aif_ops_be;
		} else {
			link->ops = &imx_aif_ops;
		}

		if (link->no_pcm || link->dynamic)
			snd_soc_dai_link_set_capabilities(link);

		/* Get dai fmt */
		ret = simple_util_parse_daifmt(dev, np, codec,
					       NULL, &link->dai_fmt);
		if (ret)
			link->dai_fmt = SND_SOC_DAIFMT_NB_NF |
					SND_SOC_DAIFMT_CBC_CFC |
					SND_SOC_DAIFMT_I2S;

		/* Get tdm slot */
		snd_soc_of_parse_tdm_slot(np, NULL, NULL,
					  &link_data->slots,
					  &link_data->slot_width);
		/* default value */
		if (!link_data->slots)
			link_data->slots = 2;

		if (!link_data->slot_width)
			link_data->slot_width = 32;

		link->ignore_pmdown_time = 1;
		link->stream_name = link->name;
		link++;
		link_data++;

		of_node_put(cpu);
		of_node_put(codec);
		of_node_put(platform);

		cpu = NULL;
		codec = NULL;
		platform = NULL;
	}

	return 0;
err:
	of_node_put(cpu);
	of_node_put(codec);
	of_node_put(platform);
err_put_np:
	of_node_put(np);
	return ret;
}

static int imx_card_probe(struct platform_device *pdev)
{
	struct snd_soc_dai_link *link_be = NULL, *link;
	struct imx_card_plat_data *plat_data;
	struct imx_card_data *data;
	int ret, i;

	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	plat_data = devm_kzalloc(&pdev->dev, sizeof(*plat_data), GFP_KERNEL);
	if (!plat_data)
		return -ENOMEM;

	data->plat_data = plat_data;
	data->card.dev = &pdev->dev;

	dev_set_drvdata(&pdev->dev, &data->card);
	snd_soc_card_set_drvdata(&data->card, data);
	ret = imx_card_parse_of(data);
	if (ret)
		return ret;

	data->num_dapm_routes = plat_data->num_codecs + 1;
	data->dapm_routes = devm_kcalloc(&pdev->dev, data->num_dapm_routes,
					 sizeof(struct snd_soc_dapm_route),
					 GFP_KERNEL);
	if (!data->dapm_routes)
		return -ENOMEM;

	/* configure the dapm routes */
	switch (plat_data->type) {
	case CODEC_AK4458:
	case CODEC_AK4497:
		if (plat_data->num_codecs == 1) {
			data->dapm_routes[0].sink = "Playback";
			data->dapm_routes[0].source = "CPU-Playback";
			i = 1;
		} else {
			for (i = 0; i < plat_data->num_codecs; i++) {
				data->dapm_routes[i].sink =
					devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s",
						       i + 1, "Playback");
				data->dapm_routes[i].source = "CPU-Playback";
			}
		}
		data->dapm_routes[i].sink = "CPU-Playback";
		data->dapm_routes[i].source = "ASRC-Playback";
		break;
	case CODEC_AK5558:
	case CODEC_AK5552:
		if (plat_data->num_codecs == 1) {
			data->dapm_routes[0].sink = "CPU-Capture";
			data->dapm_routes[0].source = "Capture";
			i = 1;
		} else {
			for (i = 0; i < plat_data->num_codecs; i++) {
				data->dapm_routes[i].source =
					devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s",
						       i + 1, "Capture");
				data->dapm_routes[i].sink = "CPU-Capture";
			}
		}
		data->dapm_routes[i].sink = "ASRC-Capture";
		data->dapm_routes[i].source = "CPU-Capture";
		break;
	default:
		break;
	}

	/* default platform data for akcodecs */
	if (codec_is_akcodec(plat_data->type)) {
		plat_data->support_rates = akcodec_rates;
		plat_data->num_rates = ARRAY_SIZE(akcodec_rates);
		plat_data->support_tdm_rates = akcodec_tdm_rates;
		plat_data->num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates);

		switch (plat_data->type) {
		case CODEC_AK4458:
			plat_data->fs_mul = ak4458_fs_mul;
			plat_data->num_fs_mul = ARRAY_SIZE(ak4458_fs_mul);
			plat_data->tdm_fs_mul = ak4458_tdm_fs_mul;
			plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul);
			plat_data->support_channels = ak4458_channels;
			plat_data->num_channels = ARRAY_SIZE(ak4458_channels);
			plat_data->support_tdm_channels = ak4458_tdm_channels;
			plat_data->num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels);
			break;
		case CODEC_AK4497:
			plat_data->fs_mul = ak4497_fs_mul;
			plat_data->num_fs_mul = ARRAY_SIZE(ak4497_fs_mul);
			plat_data->support_channels = ak4458_channels;
			plat_data->num_channels = ARRAY_SIZE(ak4458_channels);
			break;
		case CODEC_AK5558:
		case CODEC_AK5552:
			plat_data->fs_mul = ak5558_fs_mul;
			plat_data->num_fs_mul = ARRAY_SIZE(ak5558_fs_mul);
			plat_data->tdm_fs_mul = ak5558_tdm_fs_mul;
			plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul);
			plat_data->support_channels = ak5558_channels;
			plat_data->num_channels = ARRAY_SIZE(ak5558_channels);
			plat_data->support_tdm_channels = ak5558_tdm_channels;
			plat_data->num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels);
			break;
		default:
			break;
		}
	}

	/* with asrc as front end */
	if (data->card.num_links == 3) {
		data->card.dapm_routes = data->dapm_routes;
		data->card.num_dapm_routes = data->num_dapm_routes;
		for_each_card_prelinks(&data->card, i, link) {
			if (link->no_pcm == 1)
				link_be = link;
		}
		for_each_card_prelinks(&data->card, i, link) {
			if (link->dynamic == 1 && link_be) {
				link->dpcm_playback = link_be->dpcm_playback;
				link->dpcm_capture = link_be->dpcm_capture;
			}
		}
	}

	ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
	if (ret)
		return dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");

	return 0;
}

static const struct of_device_id imx_card_dt_ids[] = {
	{ .compatible = "fsl,imx-audio-card", },
	{ },
};
MODULE_DEVICE_TABLE(of, imx_card_dt_ids);

static struct platform_driver imx_card_driver = {
	.driver = {
		.name = "imx-card",
		.pm = &snd_soc_pm_ops,
		.of_match_table = imx_card_dt_ids,
	},
	.probe = imx_card_probe,
};
module_platform_driver(imx_card_driver);

MODULE_DESCRIPTION("Freescale i.MX ASoC Machine Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-card");