summaryrefslogtreecommitdiffstats
path: root/sound/soc/sh/rcar/src.c
blob: 42a100c6303d401d522dc6a9cf11850b47656027 (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
// SPDX-License-Identifier: GPL-2.0
//
// Renesas R-Car SRC support
//
// Copyright (C) 2013 Renesas Solutions Corp.
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

/*
 * You can use Synchronous Sampling Rate Convert (if no DVC)
 *
 *	amixer set "SRC Out Rate" on
 *	aplay xxx.wav &
 *	amixer set "SRC Out Rate" 96000 // convert rate to 96000Hz
 *	amixer set "SRC Out Rate" 22050 // convert rate to 22050Hz
 */

/*
 * you can enable below define if you don't need
 * SSI interrupt status debug message when debugging
 * see rsnd_print_irq_status()
 *
 * #define RSND_DEBUG_NO_IRQ_STATUS 1
 */

#include "rsnd.h"

#define SRC_NAME "src"

/* SCU_SYSTEM_STATUS0/1 */
#define OUF_SRC(id)	((1 << (id + 16)) | (1 << id))

struct rsnd_src {
	struct rsnd_mod mod;
	struct rsnd_mod *dma;
	struct rsnd_kctrl_cfg_s sen;  /* sync convert enable */
	struct rsnd_kctrl_cfg_s sync; /* sync convert */
	int irq;
};

#define RSND_SRC_NAME_SIZE 16

#define rsnd_src_get(priv, id) ((struct rsnd_src *)(priv->src) + id)
#define rsnd_src_nr(priv) ((priv)->src_nr)
#define rsnd_src_sync_is_enabled(mod) (rsnd_mod_to_src(mod)->sen.val)

#define rsnd_mod_to_src(_mod)				\
	container_of((_mod), struct rsnd_src, mod)

#define for_each_rsnd_src(pos, priv, i)				\
	for ((i) = 0;						\
	     ((i) < rsnd_src_nr(priv)) &&			\
	     ((pos) = (struct rsnd_src *)(priv)->src + i);	\
	     i++)


/*
 *		image of SRC (Sampling Rate Converter)
 *
 * 96kHz   <-> +-----+	48kHz	+-----+	 48kHz	+-------+
 * 48kHz   <-> | SRC | <------>	| SSI |	<----->	| codec |
 * 44.1kHz <-> +-----+		+-----+		+-------+
 * ...
 *
 */

static void rsnd_src_activation(struct rsnd_mod *mod)
{
	rsnd_mod_write(mod, SRC_SWRSR, 0);
	rsnd_mod_write(mod, SRC_SWRSR, 1);
}

static void rsnd_src_halt(struct rsnd_mod *mod)
{
	rsnd_mod_write(mod, SRC_SRCIR, 1);
	rsnd_mod_write(mod, SRC_SWRSR, 0);
}

static struct dma_chan *rsnd_src_dma_req(struct rsnd_dai_stream *io,
					 struct rsnd_mod *mod)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	int is_play = rsnd_io_is_play(io);

	return rsnd_dma_request_channel(rsnd_src_of_node(priv),
					SRC_NAME, mod,
					is_play ? "rx" : "tx");
}

static u32 rsnd_src_convert_rate(struct rsnd_dai_stream *io,
				 struct rsnd_mod *mod)
{
	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
	struct rsnd_src *src = rsnd_mod_to_src(mod);
	u32 convert_rate;

	if (!runtime)
		return 0;

	if (!rsnd_src_sync_is_enabled(mod))
		return rsnd_io_converted_rate(io);

	convert_rate = src->sync.val;

	if (!convert_rate)
		convert_rate = rsnd_io_converted_rate(io);

	if (!convert_rate)
		convert_rate = runtime->rate;

	return convert_rate;
}

unsigned int rsnd_src_get_rate(struct rsnd_priv *priv,
			       struct rsnd_dai_stream *io,
			       int is_in)
{
	struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
	unsigned int rate = 0;
	int is_play = rsnd_io_is_play(io);

	/*
	 * Playback
	 * runtime_rate -> [SRC] -> convert_rate
	 *
	 * Capture
	 * convert_rate -> [SRC] -> runtime_rate
	 */

	if (is_play == is_in)
		return runtime->rate;

	/*
	 * return convert rate if SRC is used,
	 * otherwise, return runtime->rate as usual
	 */
	if (src_mod)
		rate = rsnd_src_convert_rate(io, src_mod);

	if (!rate)
		rate = runtime->rate;

	return rate;
}

static const u32 bsdsr_table_pattern1[] = {
	0x01800000, /* 6 - 1/6 */
	0x01000000, /* 6 - 1/4 */
	0x00c00000, /* 6 - 1/3 */
	0x00800000, /* 6 - 1/2 */
	0x00600000, /* 6 - 2/3 */
	0x00400000, /* 6 - 1   */
};

static const u32 bsdsr_table_pattern2[] = {
	0x02400000, /* 6 - 1/6 */
	0x01800000, /* 6 - 1/4 */
	0x01200000, /* 6 - 1/3 */
	0x00c00000, /* 6 - 1/2 */
	0x00900000, /* 6 - 2/3 */
	0x00600000, /* 6 - 1   */
};

static const u32 bsisr_table[] = {
	0x00100060, /* 6 - 1/6 */
	0x00100040, /* 6 - 1/4 */
	0x00100030, /* 6 - 1/3 */
	0x00100020, /* 6 - 1/2 */
	0x00100020, /* 6 - 2/3 */
	0x00100020, /* 6 - 1   */
};

static const u32 chan288888[] = {
	0x00000006, /* 1 to 2 */
	0x000001fe, /* 1 to 8 */
	0x000001fe, /* 1 to 8 */
	0x000001fe, /* 1 to 8 */
	0x000001fe, /* 1 to 8 */
	0x000001fe, /* 1 to 8 */
};

static const u32 chan244888[] = {
	0x00000006, /* 1 to 2 */
	0x0000001e, /* 1 to 4 */
	0x0000001e, /* 1 to 4 */
	0x000001fe, /* 1 to 8 */
	0x000001fe, /* 1 to 8 */
	0x000001fe, /* 1 to 8 */
};

static const u32 chan222222[] = {
	0x00000006, /* 1 to 2 */
	0x00000006, /* 1 to 2 */
	0x00000006, /* 1 to 2 */
	0x00000006, /* 1 to 2 */
	0x00000006, /* 1 to 2 */
	0x00000006, /* 1 to 2 */
};

static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
				      struct rsnd_mod *mod)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	struct device *dev = rsnd_priv_to_dev(priv);
	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
	int is_play = rsnd_io_is_play(io);
	int use_src = 0;
	u32 fin, fout;
	u32 ifscr, fsrate, adinr;
	u32 cr, route;
	u32 i_busif, o_busif, tmp;
	const u32 *bsdsr_table;
	const u32 *chptn;
	uint ratio;
	int chan;
	int idx;

	if (!runtime)
		return;

	fin  = rsnd_src_get_in_rate(priv, io);
	fout = rsnd_src_get_out_rate(priv, io);

	chan = rsnd_runtime_channel_original(io);

	/* 6 - 1/6 are very enough ratio for SRC_BSDSR */
	if (fin == fout)
		ratio = 0;
	else if (fin > fout)
		ratio = 100 * fin / fout;
	else
		ratio = 100 * fout / fin;

	if (ratio > 600) {
		dev_err(dev, "FSO/FSI ratio error\n");
		return;
	}

	use_src = (fin != fout) | rsnd_src_sync_is_enabled(mod);

	/*
	 * SRC_ADINR
	 */
	adinr = rsnd_get_adinr_bit(mod, io) | chan;

	/*
	 * SRC_IFSCR / SRC_IFSVR
	 */
	ifscr = 0;
	fsrate = 0;
	if (use_src) {
		u64 n;

		ifscr = 1;
		n = (u64)0x0400000 * fin;
		do_div(n, fout);
		fsrate = n;
	}

	/*
	 * SRC_SRCCR / SRC_ROUTE_MODE0
	 */
	cr	= 0x00011110;
	route	= 0x0;
	if (use_src) {
		route	= 0x1;

		if (rsnd_src_sync_is_enabled(mod)) {
			cr |= 0x1;
			route |= rsnd_io_is_play(io) ?
				(0x1 << 24) : (0x1 << 25);
		}
	}

	/*
	 * SRC_BSDSR / SRC_BSISR
	 *
	 * see
	 *	Combination of Register Setting Related to
	 *	FSO/FSI Ratio and Channel, Latency
	 */
	switch (rsnd_mod_id(mod)) {
	case 0:
		chptn		= chan288888;
		bsdsr_table	= bsdsr_table_pattern1;
		break;
	case 1:
	case 3:
	case 4:
		chptn		= chan244888;
		bsdsr_table	= bsdsr_table_pattern1;
		break;
	case 2:
	case 9:
		chptn		= chan222222;
		bsdsr_table	= bsdsr_table_pattern1;
		break;
	case 5:
	case 6:
	case 7:
	case 8:
		chptn		= chan222222;
		bsdsr_table	= bsdsr_table_pattern2;
		break;
	default:
		goto convert_rate_err;
	}

	/*
	 * E3 need to overwrite
	 */
	if (rsnd_is_e3(priv))
		switch (rsnd_mod_id(mod)) {
		case 0:
		case 4:
			chptn	= chan222222;
		}

	for (idx = 0; idx < ARRAY_SIZE(chan222222); idx++)
		if (chptn[idx] & (1 << chan))
			break;

	if (chan > 8 ||
	    idx >= ARRAY_SIZE(chan222222))
		goto convert_rate_err;

	/* BUSIF_MODE */
	tmp = rsnd_get_busif_shift(io, mod);
	i_busif = ( is_play ? tmp : 0) | 1;
	o_busif = (!is_play ? tmp : 0) | 1;

	rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);

	rsnd_mod_write(mod, SRC_SRCIR, 1);	/* initialize */
	rsnd_mod_write(mod, SRC_ADINR, adinr);
	rsnd_mod_write(mod, SRC_IFSCR, ifscr);
	rsnd_mod_write(mod, SRC_IFSVR, fsrate);
	rsnd_mod_write(mod, SRC_SRCCR, cr);
	rsnd_mod_write(mod, SRC_BSDSR, bsdsr_table[idx]);
	rsnd_mod_write(mod, SRC_BSISR, bsisr_table[idx]);
	rsnd_mod_write(mod, SRC_SRCIR, 0);	/* cancel initialize */

	rsnd_mod_write(mod, SRC_I_BUSIF_MODE, i_busif);
	rsnd_mod_write(mod, SRC_O_BUSIF_MODE, o_busif);

	rsnd_mod_write(mod, SRC_BUSIF_DALIGN, rsnd_get_dalign(mod, io));

	rsnd_adg_set_src_timesel_gen2(mod, io, fin, fout);

	return;

convert_rate_err:
	dev_err(dev, "unknown BSDSR/BSDIR settings\n");
}

static int rsnd_src_irq(struct rsnd_mod *mod,
			struct rsnd_dai_stream *io,
			struct rsnd_priv *priv,
			int enable)
{
	struct rsnd_src *src = rsnd_mod_to_src(mod);
	u32 sys_int_val, int_val, sys_int_mask;
	int irq = src->irq;
	int id = rsnd_mod_id(mod);

	sys_int_val =
	sys_int_mask = OUF_SRC(id);
	int_val = 0x3300;

	/*
	 * IRQ is not supported on non-DT
	 * see
	 *	rsnd_src_probe_()
	 */
	if ((irq <= 0) || !enable) {
		sys_int_val = 0;
		int_val = 0;
	}

	/*
	 * WORKAROUND
	 *
	 * ignore over flow error when rsnd_src_sync_is_enabled()
	 */
	if (rsnd_src_sync_is_enabled(mod))
		sys_int_val = sys_int_val & 0xffff;

	rsnd_mod_write(mod, SRC_INT_ENABLE0, int_val);
	rsnd_mod_bset(mod, SCU_SYS_INT_EN0, sys_int_mask, sys_int_val);
	rsnd_mod_bset(mod, SCU_SYS_INT_EN1, sys_int_mask, sys_int_val);

	return 0;
}

static void rsnd_src_status_clear(struct rsnd_mod *mod)
{
	u32 val = OUF_SRC(rsnd_mod_id(mod));

	rsnd_mod_write(mod, SCU_SYS_STATUS0, val);
	rsnd_mod_write(mod, SCU_SYS_STATUS1, val);
}

static bool rsnd_src_error_occurred(struct rsnd_mod *mod)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	struct device *dev = rsnd_priv_to_dev(priv);
	u32 val0, val1;
	u32 status0, status1;
	bool ret = false;

	val0 = val1 = OUF_SRC(rsnd_mod_id(mod));

	/*
	 * WORKAROUND
	 *
	 * ignore over flow error when rsnd_src_sync_is_enabled()
	 */
	if (rsnd_src_sync_is_enabled(mod))
		val0 = val0 & 0xffff;

	status0 = rsnd_mod_read(mod, SCU_SYS_STATUS0);
	status1 = rsnd_mod_read(mod, SCU_SYS_STATUS1);
	if ((status0 & val0) || (status1 & val1)) {
		rsnd_print_irq_status(dev, "%s err status : 0x%08x, 0x%08x\n",
				      rsnd_mod_name(mod), status0, status1);

		ret = true;
	}

	return ret;
}

static int rsnd_src_start(struct rsnd_mod *mod,
			  struct rsnd_dai_stream *io,
			  struct rsnd_priv *priv)
{
	u32 val;

	/*
	 * WORKAROUND
	 *
	 * Enable SRC output if you want to use sync convert together with DVC
	 */
	val = (rsnd_io_to_mod_dvc(io) && !rsnd_src_sync_is_enabled(mod)) ?
		0x01 : 0x11;

	rsnd_mod_write(mod, SRC_CTRL, val);

	return 0;
}

static int rsnd_src_stop(struct rsnd_mod *mod,
			 struct rsnd_dai_stream *io,
			 struct rsnd_priv *priv)
{
	rsnd_mod_write(mod, SRC_CTRL, 0);

	return 0;
}

static int rsnd_src_init(struct rsnd_mod *mod,
			 struct rsnd_dai_stream *io,
			 struct rsnd_priv *priv)
{
	struct rsnd_src *src = rsnd_mod_to_src(mod);

	/* reset sync convert_rate */
	src->sync.val = 0;

	rsnd_mod_power_on(mod);

	rsnd_src_activation(mod);

	rsnd_src_set_convert_rate(io, mod);

	rsnd_src_status_clear(mod);

	return 0;
}

static int rsnd_src_quit(struct rsnd_mod *mod,
			 struct rsnd_dai_stream *io,
			 struct rsnd_priv *priv)
{
	struct rsnd_src *src = rsnd_mod_to_src(mod);

	rsnd_src_halt(mod);

	rsnd_mod_power_off(mod);

	/* reset sync convert_rate */
	src->sync.val = 0;

	return 0;
}

static void __rsnd_src_interrupt(struct rsnd_mod *mod,
				 struct rsnd_dai_stream *io)
{
	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
	bool stop = false;

	spin_lock(&priv->lock);

	/* ignore all cases if not working */
	if (!rsnd_io_is_working(io))
		goto rsnd_src_interrupt_out;

	if (rsnd_src_error_occurred(mod))
		stop = true;

	rsnd_src_status_clear(mod);
rsnd_src_interrupt_out:

	spin_unlock(&priv->lock);

	if (stop)
		snd_pcm_stop_xrun(io->substream);
}

static irqreturn_t rsnd_src_interrupt(int irq, void *data)
{
	struct rsnd_mod *mod = data;

	rsnd_mod_interrupt(mod, __rsnd_src_interrupt);

	return IRQ_HANDLED;
}

static int rsnd_src_probe_(struct rsnd_mod *mod,
			   struct rsnd_dai_stream *io,
			   struct rsnd_priv *priv)
{
	struct rsnd_src *src = rsnd_mod_to_src(mod);
	struct device *dev = rsnd_priv_to_dev(priv);
	int irq = src->irq;
	int ret;

	if (irq > 0) {
		/*
		 * IRQ is not supported on non-DT
		 * see
		 *	rsnd_src_irq()
		 */
		ret = devm_request_irq(dev, irq,
				       rsnd_src_interrupt,
				       IRQF_SHARED,
				       dev_name(dev), mod);
		if (ret)
			return ret;
	}

	ret = rsnd_dma_attach(io, mod, &src->dma);

	return ret;
}

static int rsnd_src_pcm_new(struct rsnd_mod *mod,
			    struct rsnd_dai_stream *io,
			    struct snd_soc_pcm_runtime *rtd)
{
	struct rsnd_src *src = rsnd_mod_to_src(mod);
	int ret;

	/*
	 * enable SRC sync convert if possible
	 */

	/*
	 * It can't use SRC Synchronous convert
	 * when Capture if it uses CMD
	 */
	if (rsnd_io_to_mod_cmd(io) && !rsnd_io_is_play(io))
		return 0;

	/*
	 * enable sync convert
	 */
	ret = rsnd_kctrl_new_s(mod, io, rtd,
			       rsnd_io_is_play(io) ?
			       "SRC Out Rate Switch" :
			       "SRC In Rate Switch",
			       rsnd_kctrl_accept_anytime,
			       rsnd_src_set_convert_rate,
			       &src->sen, 1);
	if (ret < 0)
		return ret;

	ret = rsnd_kctrl_new_s(mod, io, rtd,
			       rsnd_io_is_play(io) ?
			       "SRC Out Rate" :
			       "SRC In Rate",
			       rsnd_kctrl_accept_runtime,
			       rsnd_src_set_convert_rate,
			       &src->sync, 192000);

	return ret;
}

#ifdef CONFIG_DEBUG_FS
static void rsnd_src_debug_info(struct seq_file *m,
				struct rsnd_dai_stream *io,
				struct rsnd_mod *mod)
{
	rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
				  rsnd_mod_id(mod) * 0x20, 0x20);
	seq_puts(m, "\n");
	rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
				  0x1c0, 0x20);
	seq_puts(m, "\n");
	rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
				  0x200 + rsnd_mod_id(mod) * 0x40, 0x40);
}
#define DEBUG_INFO .debug_info = rsnd_src_debug_info
#else
#define DEBUG_INFO
#endif

static struct rsnd_mod_ops rsnd_src_ops = {
	.name		= SRC_NAME,
	.dma_req	= rsnd_src_dma_req,
	.probe		= rsnd_src_probe_,
	.init		= rsnd_src_init,
	.quit		= rsnd_src_quit,
	.start		= rsnd_src_start,
	.stop		= rsnd_src_stop,
	.irq		= rsnd_src_irq,
	.pcm_new	= rsnd_src_pcm_new,
	.get_status	= rsnd_mod_get_status,
	DEBUG_INFO
};

struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id)
{
	if (WARN_ON(id < 0 || id >= rsnd_src_nr(priv)))
		id = 0;

	return rsnd_mod_get(rsnd_src_get(priv, id));
}

int rsnd_src_probe(struct rsnd_priv *priv)
{
	struct device_node *node;
	struct device_node *np;
	struct device *dev = rsnd_priv_to_dev(priv);
	struct rsnd_src *src;
	struct clk *clk;
	char name[RSND_SRC_NAME_SIZE];
	int i, nr, ret;

	/* This driver doesn't support Gen1 at this point */
	if (rsnd_is_gen1(priv))
		return 0;

	node = rsnd_src_of_node(priv);
	if (!node)
		return 0; /* not used is not error */

	nr = rsnd_node_count(priv, node, SRC_NAME);
	if (!nr) {
		ret = -EINVAL;
		goto rsnd_src_probe_done;
	}

	src	= devm_kcalloc(dev, nr, sizeof(*src), GFP_KERNEL);
	if (!src) {
		ret = -ENOMEM;
		goto rsnd_src_probe_done;
	}

	priv->src_nr	= nr;
	priv->src	= src;

	i = 0;
	for_each_child_of_node(node, np) {
		if (!of_device_is_available(np))
			goto skip;

		i = rsnd_node_fixed_index(np, SRC_NAME, i);

		src = rsnd_src_get(priv, i);

		snprintf(name, RSND_SRC_NAME_SIZE, "%s.%d",
			 SRC_NAME, i);

		src->irq = irq_of_parse_and_map(np, 0);
		if (!src->irq) {
			ret = -EINVAL;
			of_node_put(np);
			goto rsnd_src_probe_done;
		}

		clk = devm_clk_get(dev, name);
		if (IS_ERR(clk)) {
			ret = PTR_ERR(clk);
			of_node_put(np);
			goto rsnd_src_probe_done;
		}

		ret = rsnd_mod_init(priv, rsnd_mod_get(src),
				    &rsnd_src_ops, clk, RSND_MOD_SRC, i);
		if (ret) {
			of_node_put(np);
			goto rsnd_src_probe_done;
		}

skip:
		i++;
	}

	ret = 0;

rsnd_src_probe_done:
	of_node_put(node);

	return ret;
}

void rsnd_src_remove(struct rsnd_priv *priv)
{
	struct rsnd_src *src;
	int i;

	for_each_rsnd_src(src, priv, i) {
		rsnd_mod_quit(rsnd_mod_get(src));
	}
}