summaryrefslogtreecommitdiffstats
path: root/sound/soc/uniphier/aio-cpu.c
blob: fdaa6522720fb7ea5be899ee10046f81dfd357c3 (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
// SPDX-License-Identifier: GPL-2.0
//
// Socionext UniPhier AIO ALSA CPU DAI driver.
//
// Copyright (c) 2016-2018 Socionext Inc.

#include <linux/clk.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/reset.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "aio.h"

static bool is_valid_pll(struct uniphier_aio_chip *chip, int pll_id)
{
	struct device *dev = &chip->pdev->dev;

	if (pll_id < 0 || chip->num_plls <= pll_id) {
		dev_err(dev, "PLL(%d) is not supported\n", pll_id);
		return false;
	}

	return chip->plls[pll_id].enable;
}

/**
 * find_volume - find volume supported HW port by HW port number
 * @chip: the AIO chip pointer
 * @oport_hw: HW port number, one of AUD_HW_XXXX
 *
 * Find AIO device from device list by HW port number. Volume feature is
 * available only in Output and PCM ports, this limitation comes from HW
 * specifications.
 *
 * Return: The pointer of AIO substream if successful, otherwise NULL on error.
 */
static struct uniphier_aio_sub *find_volume(struct uniphier_aio_chip *chip,
					    int oport_hw)
{
	int i;

	for (i = 0; i < chip->num_aios; i++) {
		struct uniphier_aio_sub *sub = &chip->aios[i].sub[0];

		if (!sub->swm)
			continue;

		if (sub->swm->oport.hw == oport_hw)
			return sub;
	}

	return NULL;
}

static bool match_spec(const struct uniphier_aio_spec *spec,
		       const char *name, int dir)
{
	if (dir == SNDRV_PCM_STREAM_PLAYBACK &&
	    spec->swm.dir != PORT_DIR_OUTPUT) {
		return false;
	}

	if (dir == SNDRV_PCM_STREAM_CAPTURE &&
	    spec->swm.dir != PORT_DIR_INPUT) {
		return false;
	}

	if (spec->name && strcmp(spec->name, name) == 0)
		return true;

	if (spec->gname && strcmp(spec->gname, name) == 0)
		return true;

	return false;
}

/**
 * find_spec - find HW specification info by name
 * @aio: the AIO device pointer
 * @name: name of device
 * @direction: the direction of substream, SNDRV_PCM_STREAM_*
 *
 * Find hardware specification information from list by device name. This
 * information is used for telling the difference of SoCs to driver.
 *
 * Specification list is array of 'struct uniphier_aio_spec' which is defined
 * in each drivers (see: aio-i2s.c).
 *
 * Return: The pointer of hardware specification of AIO if successful,
 * otherwise NULL on error.
 */
static const struct uniphier_aio_spec *find_spec(struct uniphier_aio *aio,
						 const char *name,
						 int direction)
{
	const struct uniphier_aio_chip_spec *chip_spec = aio->chip->chip_spec;
	int i;

	for (i = 0; i < chip_spec->num_specs; i++) {
		const struct uniphier_aio_spec *spec = &chip_spec->specs[i];

		if (match_spec(spec, name, direction))
			return spec;
	}

	return NULL;
}

/**
 * find_divider - find clock divider by frequency
 * @aio: the AIO device pointer
 * @pll_id: PLL ID, should be AUD_PLL_XX
 * @freq: required frequency
 *
 * Find suitable clock divider by frequency.
 *
 * Return: The ID of PLL if successful, otherwise negative error value.
 */
static int find_divider(struct uniphier_aio *aio, int pll_id, unsigned int freq)
{
	struct uniphier_aio_pll *pll;
	int mul[] = { 1, 1, 1, 2, };
	int div[] = { 2, 3, 1, 3, };
	int i;

	if (!is_valid_pll(aio->chip, pll_id))
		return -EINVAL;

	pll = &aio->chip->plls[pll_id];
	for (i = 0; i < ARRAY_SIZE(mul); i++)
		if (pll->freq * mul[i] / div[i] == freq)
			return i;

	return -ENOTSUPP;
}

static int uniphier_aio_set_sysclk(struct snd_soc_dai *dai, int clk_id,
				   unsigned int freq, int dir)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct device *dev = &aio->chip->pdev->dev;
	bool pll_auto = false;
	int pll_id, div_id;

	switch (clk_id) {
	case AUD_CLK_IO:
		return -ENOTSUPP;
	case AUD_CLK_A1:
		pll_id = AUD_PLL_A1;
		break;
	case AUD_CLK_F1:
		pll_id = AUD_PLL_F1;
		break;
	case AUD_CLK_A2:
		pll_id = AUD_PLL_A2;
		break;
	case AUD_CLK_F2:
		pll_id = AUD_PLL_F2;
		break;
	case AUD_CLK_A:
		pll_id = AUD_PLL_A1;
		pll_auto = true;
		break;
	case AUD_CLK_F:
		pll_id = AUD_PLL_F1;
		pll_auto = true;
		break;
	case AUD_CLK_APLL:
		pll_id = AUD_PLL_APLL;
		break;
	case AUD_CLK_RX0:
		pll_id = AUD_PLL_RX0;
		break;
	case AUD_CLK_USB0:
		pll_id = AUD_PLL_USB0;
		break;
	case AUD_CLK_HSC0:
		pll_id = AUD_PLL_HSC0;
		break;
	default:
		dev_err(dev, "Sysclk(%d) is not supported\n", clk_id);
		return -EINVAL;
	}

	if (pll_auto) {
		for (pll_id = 0; pll_id < aio->chip->num_plls; pll_id++) {
			div_id = find_divider(aio, pll_id, freq);
			if (div_id >= 0) {
				aio->plldiv = div_id;
				break;
			}
		}
		if (pll_id == aio->chip->num_plls) {
			dev_err(dev, "Sysclk frequency is not supported(%d)\n",
				freq);
			return -EINVAL;
		}
	}

	if (dir == SND_SOC_CLOCK_OUT)
		aio->pll_out = pll_id;
	else
		aio->pll_in = pll_id;

	return 0;
}

static int uniphier_aio_set_pll(struct snd_soc_dai *dai, int pll_id,
				int source, unsigned int freq_in,
				unsigned int freq_out)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	int ret;

	if (!is_valid_pll(aio->chip, pll_id))
		return -EINVAL;

	ret = aio_chip_set_pll(aio->chip, pll_id, freq_out);
	if (ret < 0)
		return ret;

	return 0;
}

static int uniphier_aio_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct device *dev = &aio->chip->pdev->dev;

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_RIGHT_J:
	case SND_SOC_DAIFMT_I2S:
		aio->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
		break;
	default:
		dev_err(dev, "Format is not supported(%d)\n",
			fmt & SND_SOC_DAIFMT_FORMAT_MASK);
		return -EINVAL;
	}

	return 0;
}

static int uniphier_aio_startup(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
	int ret;

	sub->substream = substream;
	sub->pass_through = 0;
	sub->use_mmap = true;

	ret = aio_init(sub);
	if (ret)
		return ret;

	return 0;
}

static void uniphier_aio_shutdown(struct snd_pcm_substream *substream,
				  struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct uniphier_aio_sub *sub = &aio->sub[substream->stream];

	sub->substream = NULL;
}

static int uniphier_aio_hw_params(struct snd_pcm_substream *substream,
				  struct snd_pcm_hw_params *params,
				  struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
	struct device *dev = &aio->chip->pdev->dev;
	int freq, ret;

	switch (params_rate(params)) {
	case 48000:
	case 32000:
	case 24000:
		freq = 12288000;
		break;
	case 44100:
	case 22050:
		freq = 11289600;
		break;
	default:
		dev_err(dev, "Rate is not supported(%d)\n",
			params_rate(params));
		return -EINVAL;
	}
	ret = snd_soc_dai_set_sysclk(dai, AUD_CLK_A,
				     freq, SND_SOC_CLOCK_OUT);
	if (ret)
		return ret;

	sub->params = *params;
	sub->setting = 1;

	aio_port_reset(sub);
	aio_port_set_volume(sub, sub->vol);
	aio_src_reset(sub);

	return 0;
}

static int uniphier_aio_hw_free(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct uniphier_aio_sub *sub = &aio->sub[substream->stream];

	sub->setting = 0;

	return 0;
}

static int uniphier_aio_prepare(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
	int ret;

	ret = aio_port_set_param(sub, sub->pass_through, &sub->params);
	if (ret)
		return ret;
	ret = aio_src_set_param(sub, &sub->params);
	if (ret)
		return ret;
	aio_port_set_enable(sub, 1);

	ret = aio_if_set_param(sub, sub->pass_through);
	if (ret)
		return ret;

	if (sub->swm->type == PORT_TYPE_CONV) {
		ret = aio_srcif_set_param(sub);
		if (ret)
			return ret;
		ret = aio_srcch_set_param(sub);
		if (ret)
			return ret;
		aio_srcch_set_enable(sub, 1);
	}

	return 0;
}

const struct snd_soc_dai_ops uniphier_aio_i2s_ops = {
	.set_sysclk  = uniphier_aio_set_sysclk,
	.set_pll     = uniphier_aio_set_pll,
	.set_fmt     = uniphier_aio_set_fmt,
	.startup     = uniphier_aio_startup,
	.shutdown    = uniphier_aio_shutdown,
	.hw_params   = uniphier_aio_hw_params,
	.hw_free     = uniphier_aio_hw_free,
	.prepare     = uniphier_aio_prepare,
};
EXPORT_SYMBOL_GPL(uniphier_aio_i2s_ops);

const struct snd_soc_dai_ops uniphier_aio_spdif_ops = {
	.set_sysclk  = uniphier_aio_set_sysclk,
	.set_pll     = uniphier_aio_set_pll,
	.startup     = uniphier_aio_startup,
	.shutdown    = uniphier_aio_shutdown,
	.hw_params   = uniphier_aio_hw_params,
	.hw_free     = uniphier_aio_hw_free,
	.prepare     = uniphier_aio_prepare,
};
EXPORT_SYMBOL_GPL(uniphier_aio_spdif_ops);

int uniphier_aio_dai_probe(struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	int i;

	for (i = 0; i < ARRAY_SIZE(aio->sub); i++) {
		struct uniphier_aio_sub *sub = &aio->sub[i];
		const struct uniphier_aio_spec *spec;

		spec = find_spec(aio, dai->name, i);
		if (!spec)
			continue;

		sub->swm = &spec->swm;
		sub->spec = spec;

		sub->vol = AUD_VOL_INIT;
	}

	aio_iecout_set_enable(aio->chip, true);
	aio_chip_init(aio->chip);
	aio->chip->active = 1;

	return 0;
}
EXPORT_SYMBOL_GPL(uniphier_aio_dai_probe);

int uniphier_aio_dai_remove(struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);

	aio->chip->active = 0;

	return 0;
}
EXPORT_SYMBOL_GPL(uniphier_aio_dai_remove);

static void uniphier_aio_dai_suspend(struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);

	if (!dai->active)
		return;

	aio->chip->num_wup_aios--;
	if (!aio->chip->num_wup_aios) {
		reset_control_assert(aio->chip->rst);
		clk_disable_unprepare(aio->chip->clk);
	}
}

static int uniphier_aio_suspend(struct snd_soc_component *component)
{
	struct snd_soc_dai *dai;

	for_each_component_dais(component, dai)
		uniphier_aio_dai_suspend(dai);
	return 0;
}

static int uniphier_aio_dai_resume(struct snd_soc_dai *dai)
{
	struct uniphier_aio *aio = uniphier_priv(dai);
	int ret, i;

	if (!dai->active)
		return 0;

	if (!aio->chip->active)
		return 0;

	if (!aio->chip->num_wup_aios) {
		ret = clk_prepare_enable(aio->chip->clk);
		if (ret)
			return ret;

		ret = reset_control_deassert(aio->chip->rst);
		if (ret)
			goto err_out_clock;
	}

	aio_iecout_set_enable(aio->chip, true);
	aio_chip_init(aio->chip);

	for (i = 0; i < ARRAY_SIZE(aio->sub); i++) {
		struct uniphier_aio_sub *sub = &aio->sub[i];

		if (!sub->spec || !sub->substream)
			continue;

		ret = aio_init(sub);
		if (ret)
			goto err_out_reset;

		if (!sub->setting)
			continue;

		aio_port_reset(sub);
		aio_src_reset(sub);
	}
	aio->chip->num_wup_aios++;

	return 0;

err_out_reset:
	if (!aio->chip->num_wup_aios)
		reset_control_assert(aio->chip->rst);
err_out_clock:
	if (!aio->chip->num_wup_aios)
		clk_disable_unprepare(aio->chip->clk);

	return ret;
}

static int uniphier_aio_resume(struct snd_soc_component *component)
{
	struct snd_soc_dai *dai;
	int ret = 0;

	for_each_component_dais(component, dai)
		ret |= uniphier_aio_dai_resume(dai);
	return ret;
}

static int uniphier_aio_vol_info(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = AUD_VOL_MAX;

	return 0;
}

static int uniphier_aio_vol_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
	struct uniphier_aio_chip *chip = snd_soc_component_get_drvdata(comp);
	struct uniphier_aio_sub *sub;
	int oport_hw = kcontrol->private_value;

	sub = find_volume(chip, oport_hw);
	if (!sub)
		return 0;

	ucontrol->value.integer.value[0] = sub->vol;

	return 0;
}

static int uniphier_aio_vol_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
	struct uniphier_aio_chip *chip = snd_soc_component_get_drvdata(comp);
	struct uniphier_aio_sub *sub;
	int oport_hw = kcontrol->private_value;

	sub = find_volume(chip, oport_hw);
	if (!sub)
		return 0;

	if (sub->vol == ucontrol->value.integer.value[0])
		return 0;
	sub->vol = ucontrol->value.integer.value[0];

	aio_port_set_volume(sub, sub->vol);

	return 0;
}

static const struct snd_kcontrol_new uniphier_aio_controls[] = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.name = "HPCMOUT1 Volume",
		.info = uniphier_aio_vol_info,
		.get = uniphier_aio_vol_get,
		.put = uniphier_aio_vol_put,
		.private_value = AUD_HW_HPCMOUT1,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.name = "PCMOUT1 Volume",
		.info = uniphier_aio_vol_info,
		.get = uniphier_aio_vol_get,
		.put = uniphier_aio_vol_put,
		.private_value = AUD_HW_PCMOUT1,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.name = "PCMOUT2 Volume",
		.info = uniphier_aio_vol_info,
		.get = uniphier_aio_vol_get,
		.put = uniphier_aio_vol_put,
		.private_value = AUD_HW_PCMOUT2,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.name = "PCMOUT3 Volume",
		.info = uniphier_aio_vol_info,
		.get = uniphier_aio_vol_get,
		.put = uniphier_aio_vol_put,
		.private_value = AUD_HW_PCMOUT3,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.name = "HIECOUT1 Volume",
		.info = uniphier_aio_vol_info,
		.get = uniphier_aio_vol_get,
		.put = uniphier_aio_vol_put,
		.private_value = AUD_HW_HIECOUT1,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.name = "IECOUT1 Volume",
		.info = uniphier_aio_vol_info,
		.get = uniphier_aio_vol_get,
		.put = uniphier_aio_vol_put,
		.private_value = AUD_HW_IECOUT1,
	},
};

static const struct snd_soc_component_driver uniphier_aio_component = {
	.name = "uniphier-aio",
	.controls = uniphier_aio_controls,
	.num_controls = ARRAY_SIZE(uniphier_aio_controls),
	.suspend = uniphier_aio_suspend,
	.resume  = uniphier_aio_resume,
};

int uniphier_aio_probe(struct platform_device *pdev)
{
	struct uniphier_aio_chip *chip;
	struct device *dev = &pdev->dev;
	int ret, i, j;

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

	chip->chip_spec = of_device_get_match_data(dev);
	if (!chip->chip_spec)
		return -EINVAL;

	chip->regmap_sg = syscon_regmap_lookup_by_phandle(dev->of_node,
							  "socionext,syscon");
	if (IS_ERR(chip->regmap_sg)) {
		if (PTR_ERR(chip->regmap_sg) == -EPROBE_DEFER)
			return -EPROBE_DEFER;
		chip->regmap_sg = NULL;
	}

	chip->clk = devm_clk_get(dev, "aio");
	if (IS_ERR(chip->clk))
		return PTR_ERR(chip->clk);

	chip->rst = devm_reset_control_get_shared(dev, "aio");
	if (IS_ERR(chip->rst))
		return PTR_ERR(chip->rst);

	chip->num_aios = chip->chip_spec->num_dais;
	chip->num_wup_aios = chip->num_aios;
	chip->aios = devm_kcalloc(dev,
				  chip->num_aios, sizeof(struct uniphier_aio),
				  GFP_KERNEL);
	if (!chip->aios)
		return -ENOMEM;

	chip->num_plls = chip->chip_spec->num_plls;
	chip->plls = devm_kcalloc(dev,
				  chip->num_plls,
				  sizeof(struct uniphier_aio_pll),
				  GFP_KERNEL);
	if (!chip->plls)
		return -ENOMEM;
	memcpy(chip->plls, chip->chip_spec->plls,
	       sizeof(struct uniphier_aio_pll) * chip->num_plls);

	for (i = 0; i < chip->num_aios; i++) {
		struct uniphier_aio *aio = &chip->aios[i];

		aio->chip = chip;
		aio->fmt = SND_SOC_DAIFMT_I2S;

		for (j = 0; j < ARRAY_SIZE(aio->sub); j++) {
			struct uniphier_aio_sub *sub = &aio->sub[j];

			sub->aio = aio;
			spin_lock_init(&sub->lock);
		}
	}

	chip->pdev = pdev;
	platform_set_drvdata(pdev, chip);

	ret = clk_prepare_enable(chip->clk);
	if (ret)
		return ret;

	ret = reset_control_deassert(chip->rst);
	if (ret)
		goto err_out_clock;

	ret = devm_snd_soc_register_component(dev, &uniphier_aio_component,
					      chip->chip_spec->dais,
					      chip->chip_spec->num_dais);
	if (ret) {
		dev_err(dev, "Register component failed.\n");
		goto err_out_reset;
	}

	ret = uniphier_aiodma_soc_register_platform(pdev);
	if (ret) {
		dev_err(dev, "Register platform failed.\n");
		goto err_out_reset;
	}

	return 0;

err_out_reset:
	reset_control_assert(chip->rst);

err_out_clock:
	clk_disable_unprepare(chip->clk);

	return ret;
}
EXPORT_SYMBOL_GPL(uniphier_aio_probe);

int uniphier_aio_remove(struct platform_device *pdev)
{
	struct uniphier_aio_chip *chip = platform_get_drvdata(pdev);

	reset_control_assert(chip->rst);
	clk_disable_unprepare(chip->clk);

	return 0;
}
EXPORT_SYMBOL_GPL(uniphier_aio_remove);

MODULE_AUTHOR("Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>");
MODULE_DESCRIPTION("UniPhier AIO CPU DAI driver.");
MODULE_LICENSE("GPL v2");