summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/pcm186x.c
blob: b8845f45549ea2d2eb9264b4cee5b1e8f4ddad73 (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Texas Instruments PCM186x Universal Audio ADC
 *
 * Copyright (C) 2015-2017 Texas Instruments Incorporated - https://www.ti.com
 *	Andreas Dannenberg <dannenberg@ti.com>
 *	Andrew F. Davis <afd@ti.com>
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "pcm186x.h"

static const char * const pcm186x_supply_names[] = {
	"avdd",		/* Analog power supply. Connect to 3.3-V supply. */
	"dvdd",		/* Digital power supply. Connect to 3.3-V supply. */
	"iovdd",	/* I/O power supply. Connect to 3.3-V or 1.8-V. */
};
#define PCM186x_NUM_SUPPLIES ARRAY_SIZE(pcm186x_supply_names)

struct pcm186x_priv {
	struct regmap *regmap;
	struct regulator_bulk_data supplies[PCM186x_NUM_SUPPLIES];
	unsigned int sysclk;
	unsigned int tdm_offset;
	bool is_tdm_mode;
	bool is_master_mode;
};

static const DECLARE_TLV_DB_SCALE(pcm186x_pga_tlv, -1200, 50, 0);

static const struct snd_kcontrol_new pcm1863_snd_controls[] = {
	SOC_DOUBLE_R_S_TLV("ADC Capture Volume", PCM186X_PGA_VAL_CH1_L,
			   PCM186X_PGA_VAL_CH1_R, 0, -24, 80, 7, 0,
			   pcm186x_pga_tlv),
};

static const struct snd_kcontrol_new pcm1865_snd_controls[] = {
	SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", PCM186X_PGA_VAL_CH1_L,
			   PCM186X_PGA_VAL_CH1_R, 0, -24, 80, 7, 0,
			   pcm186x_pga_tlv),
	SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", PCM186X_PGA_VAL_CH2_L,
			   PCM186X_PGA_VAL_CH2_R, 0, -24, 80, 7, 0,
			   pcm186x_pga_tlv),
};

static const unsigned int pcm186x_adc_input_channel_sel_value[] = {
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	0x10, 0x20, 0x30
};

static const char * const pcm186x_adcl_input_channel_sel_text[] = {
	"No Select",
	"VINL1[SE]",					/* Default for ADC1L */
	"VINL2[SE]",					/* Default for ADC2L */
	"VINL2[SE] + VINL1[SE]",
	"VINL3[SE]",
	"VINL3[SE] + VINL1[SE]",
	"VINL3[SE] + VINL2[SE]",
	"VINL3[SE] + VINL2[SE] + VINL1[SE]",
	"VINL4[SE]",
	"VINL4[SE] + VINL1[SE]",
	"VINL4[SE] + VINL2[SE]",
	"VINL4[SE] + VINL2[SE] + VINL1[SE]",
	"VINL4[SE] + VINL3[SE]",
	"VINL4[SE] + VINL3[SE] + VINL1[SE]",
	"VINL4[SE] + VINL3[SE] + VINL2[SE]",
	"VINL4[SE] + VINL3[SE] + VINL2[SE] + VINL1[SE]",
	"{VIN1P, VIN1M}[DIFF]",
	"{VIN4P, VIN4M}[DIFF]",
	"{VIN1P, VIN1M}[DIFF] + {VIN4P, VIN4M}[DIFF]"
};

static const char * const pcm186x_adcr_input_channel_sel_text[] = {
	"No Select",
	"VINR1[SE]",					/* Default for ADC1R */
	"VINR2[SE]",					/* Default for ADC2R */
	"VINR2[SE] + VINR1[SE]",
	"VINR3[SE]",
	"VINR3[SE] + VINR1[SE]",
	"VINR3[SE] + VINR2[SE]",
	"VINR3[SE] + VINR2[SE] + VINR1[SE]",
	"VINR4[SE]",
	"VINR4[SE] + VINR1[SE]",
	"VINR4[SE] + VINR2[SE]",
	"VINR4[SE] + VINR2[SE] + VINR1[SE]",
	"VINR4[SE] + VINR3[SE]",
	"VINR4[SE] + VINR3[SE] + VINR1[SE]",
	"VINR4[SE] + VINR3[SE] + VINR2[SE]",
	"VINR4[SE] + VINR3[SE] + VINR2[SE] + VINR1[SE]",
	"{VIN2P, VIN2M}[DIFF]",
	"{VIN3P, VIN3M}[DIFF]",
	"{VIN2P, VIN2M}[DIFF] + {VIN3P, VIN3M}[DIFF]"
};

static const struct soc_enum pcm186x_adc_input_channel_sel[] = {
	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0,
			      PCM186X_ADC_INPUT_SEL_MASK,
			      ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
			      pcm186x_adcl_input_channel_sel_text,
			      pcm186x_adc_input_channel_sel_value),
	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0,
			      PCM186X_ADC_INPUT_SEL_MASK,
			      ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
			      pcm186x_adcr_input_channel_sel_text,
			      pcm186x_adc_input_channel_sel_value),
	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC2_INPUT_SEL_L, 0,
			      PCM186X_ADC_INPUT_SEL_MASK,
			      ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
			      pcm186x_adcl_input_channel_sel_text,
			      pcm186x_adc_input_channel_sel_value),
	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC2_INPUT_SEL_R, 0,
			      PCM186X_ADC_INPUT_SEL_MASK,
			      ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
			      pcm186x_adcr_input_channel_sel_text,
			      pcm186x_adc_input_channel_sel_value),
};

static const struct snd_kcontrol_new pcm186x_adc_mux_controls[] = {
	SOC_DAPM_ENUM("ADC1 Left Input", pcm186x_adc_input_channel_sel[0]),
	SOC_DAPM_ENUM("ADC1 Right Input", pcm186x_adc_input_channel_sel[1]),
	SOC_DAPM_ENUM("ADC2 Left Input", pcm186x_adc_input_channel_sel[2]),
	SOC_DAPM_ENUM("ADC2 Right Input", pcm186x_adc_input_channel_sel[3]),
};

static const struct snd_soc_dapm_widget pcm1863_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("VINL1"),
	SND_SOC_DAPM_INPUT("VINR1"),
	SND_SOC_DAPM_INPUT("VINL2"),
	SND_SOC_DAPM_INPUT("VINR2"),
	SND_SOC_DAPM_INPUT("VINL3"),
	SND_SOC_DAPM_INPUT("VINR3"),
	SND_SOC_DAPM_INPUT("VINL4"),
	SND_SOC_DAPM_INPUT("VINR4"),

	SND_SOC_DAPM_MUX("ADC Left Capture Source", SND_SOC_NOPM, 0, 0,
			 &pcm186x_adc_mux_controls[0]),
	SND_SOC_DAPM_MUX("ADC Right Capture Source", SND_SOC_NOPM, 0, 0,
			 &pcm186x_adc_mux_controls[1]),

	/*
	 * Put the codec into SLEEP mode when not in use, allowing the
	 * Energysense mechanism to operate.
	 */
	SND_SOC_DAPM_ADC("ADC", "HiFi Capture", PCM186X_POWER_CTRL, 1,  1),
};

static const struct snd_soc_dapm_widget pcm1865_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("VINL1"),
	SND_SOC_DAPM_INPUT("VINR1"),
	SND_SOC_DAPM_INPUT("VINL2"),
	SND_SOC_DAPM_INPUT("VINR2"),
	SND_SOC_DAPM_INPUT("VINL3"),
	SND_SOC_DAPM_INPUT("VINR3"),
	SND_SOC_DAPM_INPUT("VINL4"),
	SND_SOC_DAPM_INPUT("VINR4"),

	SND_SOC_DAPM_MUX("ADC1 Left Capture Source", SND_SOC_NOPM, 0, 0,
			 &pcm186x_adc_mux_controls[0]),
	SND_SOC_DAPM_MUX("ADC1 Right Capture Source", SND_SOC_NOPM, 0, 0,
			 &pcm186x_adc_mux_controls[1]),
	SND_SOC_DAPM_MUX("ADC2 Left Capture Source", SND_SOC_NOPM, 0, 0,
			 &pcm186x_adc_mux_controls[2]),
	SND_SOC_DAPM_MUX("ADC2 Right Capture Source", SND_SOC_NOPM, 0, 0,
			 &pcm186x_adc_mux_controls[3]),

	/*
	 * Put the codec into SLEEP mode when not in use, allowing the
	 * Energysense mechanism to operate.
	 */
	SND_SOC_DAPM_ADC("ADC1", "HiFi Capture 1", PCM186X_POWER_CTRL, 1,  1),
	SND_SOC_DAPM_ADC("ADC2", "HiFi Capture 2", PCM186X_POWER_CTRL, 1,  1),
};

static const struct snd_soc_dapm_route pcm1863_dapm_routes[] = {
	{ "ADC Left Capture Source", NULL, "VINL1" },
	{ "ADC Left Capture Source", NULL, "VINR1" },
	{ "ADC Left Capture Source", NULL, "VINL2" },
	{ "ADC Left Capture Source", NULL, "VINR2" },
	{ "ADC Left Capture Source", NULL, "VINL3" },
	{ "ADC Left Capture Source", NULL, "VINR3" },
	{ "ADC Left Capture Source", NULL, "VINL4" },
	{ "ADC Left Capture Source", NULL, "VINR4" },

	{ "ADC", NULL, "ADC Left Capture Source" },

	{ "ADC Right Capture Source", NULL, "VINL1" },
	{ "ADC Right Capture Source", NULL, "VINR1" },
	{ "ADC Right Capture Source", NULL, "VINL2" },
	{ "ADC Right Capture Source", NULL, "VINR2" },
	{ "ADC Right Capture Source", NULL, "VINL3" },
	{ "ADC Right Capture Source", NULL, "VINR3" },
	{ "ADC Right Capture Source", NULL, "VINL4" },
	{ "ADC Right Capture Source", NULL, "VINR4" },

	{ "ADC", NULL, "ADC Right Capture Source" },
};

static const struct snd_soc_dapm_route pcm1865_dapm_routes[] = {
	{ "ADC1 Left Capture Source", NULL, "VINL1" },
	{ "ADC1 Left Capture Source", NULL, "VINR1" },
	{ "ADC1 Left Capture Source", NULL, "VINL2" },
	{ "ADC1 Left Capture Source", NULL, "VINR2" },
	{ "ADC1 Left Capture Source", NULL, "VINL3" },
	{ "ADC1 Left Capture Source", NULL, "VINR3" },
	{ "ADC1 Left Capture Source", NULL, "VINL4" },
	{ "ADC1 Left Capture Source", NULL, "VINR4" },

	{ "ADC1", NULL, "ADC1 Left Capture Source" },

	{ "ADC1 Right Capture Source", NULL, "VINL1" },
	{ "ADC1 Right Capture Source", NULL, "VINR1" },
	{ "ADC1 Right Capture Source", NULL, "VINL2" },
	{ "ADC1 Right Capture Source", NULL, "VINR2" },
	{ "ADC1 Right Capture Source", NULL, "VINL3" },
	{ "ADC1 Right Capture Source", NULL, "VINR3" },
	{ "ADC1 Right Capture Source", NULL, "VINL4" },
	{ "ADC1 Right Capture Source", NULL, "VINR4" },

	{ "ADC1", NULL, "ADC1 Right Capture Source" },

	{ "ADC2 Left Capture Source", NULL, "VINL1" },
	{ "ADC2 Left Capture Source", NULL, "VINR1" },
	{ "ADC2 Left Capture Source", NULL, "VINL2" },
	{ "ADC2 Left Capture Source", NULL, "VINR2" },
	{ "ADC2 Left Capture Source", NULL, "VINL3" },
	{ "ADC2 Left Capture Source", NULL, "VINR3" },
	{ "ADC2 Left Capture Source", NULL, "VINL4" },
	{ "ADC2 Left Capture Source", NULL, "VINR4" },

	{ "ADC2", NULL, "ADC2 Left Capture Source" },

	{ "ADC2 Right Capture Source", NULL, "VINL1" },
	{ "ADC2 Right Capture Source", NULL, "VINR1" },
	{ "ADC2 Right Capture Source", NULL, "VINL2" },
	{ "ADC2 Right Capture Source", NULL, "VINR2" },
	{ "ADC2 Right Capture Source", NULL, "VINL3" },
	{ "ADC2 Right Capture Source", NULL, "VINR3" },
	{ "ADC2 Right Capture Source", NULL, "VINL4" },
	{ "ADC2 Right Capture Source", NULL, "VINR4" },

	{ "ADC2", NULL, "ADC2 Right Capture Source" },
};

static int pcm186x_hw_params(struct snd_pcm_substream *substream,
			     struct snd_pcm_hw_params *params,
			     struct snd_soc_dai *dai)
{
	struct snd_soc_component *component = dai->component;
	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);
	unsigned int rate = params_rate(params);
	snd_pcm_format_t format = params_format(params);
	unsigned int width = params_width(params);
	unsigned int channels = params_channels(params);
	unsigned int div_lrck;
	unsigned int div_bck;
	u8 tdm_tx_sel = 0;
	u8 pcm_cfg = 0;

	dev_dbg(component->dev, "%s() rate=%u format=0x%x width=%u channels=%u\n",
		__func__, rate, format, width, channels);

	switch (width) {
	case 16:
		pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_16 <<
			  PCM186X_PCM_CFG_RX_WLEN_SHIFT |
			  PCM186X_PCM_CFG_TX_WLEN_16 <<
			  PCM186X_PCM_CFG_TX_WLEN_SHIFT;
		break;
	case 20:
		pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_20 <<
			  PCM186X_PCM_CFG_RX_WLEN_SHIFT |
			  PCM186X_PCM_CFG_TX_WLEN_20 <<
			  PCM186X_PCM_CFG_TX_WLEN_SHIFT;
		break;
	case 24:
		pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_24 <<
			  PCM186X_PCM_CFG_RX_WLEN_SHIFT |
			  PCM186X_PCM_CFG_TX_WLEN_24 <<
			  PCM186X_PCM_CFG_TX_WLEN_SHIFT;
		break;
	case 32:
		pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_32 <<
			  PCM186X_PCM_CFG_RX_WLEN_SHIFT |
			  PCM186X_PCM_CFG_TX_WLEN_32 <<
			  PCM186X_PCM_CFG_TX_WLEN_SHIFT;
		break;
	default:
		return -EINVAL;
	}

	snd_soc_component_update_bits(component, PCM186X_PCM_CFG,
			    PCM186X_PCM_CFG_RX_WLEN_MASK |
			    PCM186X_PCM_CFG_TX_WLEN_MASK,
			    pcm_cfg);

	div_lrck = width * channels;

	if (priv->is_tdm_mode) {
		/* Select TDM transmission data */
		switch (channels) {
		case 2:
			tdm_tx_sel = PCM186X_TDM_TX_SEL_2CH;
			break;
		case 4:
			tdm_tx_sel = PCM186X_TDM_TX_SEL_4CH;
			break;
		case 6:
			tdm_tx_sel = PCM186X_TDM_TX_SEL_6CH;
			break;
		default:
			return -EINVAL;
		}

		snd_soc_component_update_bits(component, PCM186X_TDM_TX_SEL,
				    PCM186X_TDM_TX_SEL_MASK, tdm_tx_sel);

		/* In DSP/TDM mode, the LRCLK divider must be 256 */
		div_lrck = 256;

		/* Configure 1/256 duty cycle for LRCK */
		snd_soc_component_update_bits(component, PCM186X_PCM_CFG,
				    PCM186X_PCM_CFG_TDM_LRCK_MODE,
				    PCM186X_PCM_CFG_TDM_LRCK_MODE);
	}

	/* Only configure clock dividers in master mode. */
	if (priv->is_master_mode) {
		div_bck = priv->sysclk / (div_lrck * rate);

		dev_dbg(component->dev,
			"%s() master_clk=%u div_bck=%u div_lrck=%u\n",
			__func__, priv->sysclk, div_bck, div_lrck);

		snd_soc_component_write(component, PCM186X_BCK_DIV, div_bck - 1);
		snd_soc_component_write(component, PCM186X_LRK_DIV, div_lrck - 1);
	}

	return 0;
}

static int pcm186x_set_fmt(struct snd_soc_dai *dai, unsigned int format)
{
	struct snd_soc_component *component = dai->component;
	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);
	u8 clk_ctrl = 0;
	u8 pcm_cfg = 0;

	dev_dbg(component->dev, "%s() format=0x%x\n", __func__, format);

	/* set master/slave audio interface */
	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		if (!priv->sysclk) {
			dev_err(component->dev, "operating in master mode requires sysclock to be configured\n");
			return -EINVAL;
		}
		clk_ctrl |= PCM186X_CLK_CTRL_MST_MODE;
		priv->is_master_mode = true;
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
		priv->is_master_mode = false;
		break;
	default:
		dev_err(component->dev, "Invalid DAI master/slave interface\n");
		return -EINVAL;
	}

	/* set interface polarity */
	switch (format & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		break;
	default:
		dev_err(component->dev, "Inverted DAI clocks not supported\n");
		return -EINVAL;
	}

	/* set interface format */
	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		pcm_cfg = PCM186X_PCM_CFG_FMT_I2S;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		pcm_cfg = PCM186X_PCM_CFG_FMT_LEFTJ;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		priv->tdm_offset += 1;
		fallthrough;
		/* DSP_A uses the same basic config as DSP_B
		 * except we need to shift the TDM output by one BCK cycle
		 */
	case SND_SOC_DAIFMT_DSP_B:
		priv->is_tdm_mode = true;
		pcm_cfg = PCM186X_PCM_CFG_FMT_TDM;
		break;
	default:
		dev_err(component->dev, "Invalid DAI format\n");
		return -EINVAL;
	}

	snd_soc_component_update_bits(component, PCM186X_CLK_CTRL,
			    PCM186X_CLK_CTRL_MST_MODE, clk_ctrl);

	snd_soc_component_write(component, PCM186X_TDM_TX_OFFSET, priv->tdm_offset);

	snd_soc_component_update_bits(component, PCM186X_PCM_CFG,
			    PCM186X_PCM_CFG_FMT_MASK, pcm_cfg);

	return 0;
}

static int pcm186x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
				unsigned int rx_mask, int slots, int slot_width)
{
	struct snd_soc_component *component = dai->component;
	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);
	unsigned int first_slot, last_slot, tdm_offset;

	dev_dbg(component->dev,
		"%s() tx_mask=0x%x rx_mask=0x%x slots=%d slot_width=%d\n",
		__func__, tx_mask, rx_mask, slots, slot_width);

	if (!tx_mask) {
		dev_err(component->dev, "tdm tx mask must not be 0\n");
		return -EINVAL;
	}

	first_slot = __ffs(tx_mask);
	last_slot = __fls(tx_mask);

	if (last_slot - first_slot != hweight32(tx_mask) - 1) {
		dev_err(component->dev, "tdm tx mask must be contiguous\n");
		return -EINVAL;
	}

	tdm_offset = first_slot * slot_width;

	if (tdm_offset > 255) {
		dev_err(component->dev, "tdm tx slot selection out of bounds\n");
		return -EINVAL;
	}

	priv->tdm_offset = tdm_offset;

	return 0;
}

static int pcm186x_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
				  unsigned int freq, int dir)
{
	struct snd_soc_component *component = dai->component;
	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);

	dev_dbg(component->dev, "%s() clk_id=%d freq=%u dir=%d\n",
		__func__, clk_id, freq, dir);

	priv->sysclk = freq;

	return 0;
}

static const struct snd_soc_dai_ops pcm186x_dai_ops = {
	.set_sysclk = pcm186x_set_dai_sysclk,
	.set_tdm_slot = pcm186x_set_tdm_slot,
	.set_fmt = pcm186x_set_fmt,
	.hw_params = pcm186x_hw_params,
};

static struct snd_soc_dai_driver pcm1863_dai = {
	.name = "pcm1863-aif",
	.capture = {
		 .stream_name = "Capture",
		 .channels_min = 1,
		 .channels_max = 2,
		 .rates = PCM186X_RATES,
		 .formats = PCM186X_FORMATS,
	 },
	.ops = &pcm186x_dai_ops,
};

static struct snd_soc_dai_driver pcm1865_dai = {
	.name = "pcm1865-aif",
	.capture = {
		 .stream_name = "Capture",
		 .channels_min = 1,
		 .channels_max = 4,
		 .rates = PCM186X_RATES,
		 .formats = PCM186X_FORMATS,
	 },
	.ops = &pcm186x_dai_ops,
};

static int pcm186x_power_on(struct snd_soc_component *component)
{
	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);
	int ret = 0;

	ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies),
				    priv->supplies);
	if (ret)
		return ret;

	regcache_cache_only(priv->regmap, false);
	ret = regcache_sync(priv->regmap);
	if (ret) {
		dev_err(component->dev, "Failed to restore cache\n");
		regcache_cache_only(priv->regmap, true);
		regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
				       priv->supplies);
		return ret;
	}

	snd_soc_component_update_bits(component, PCM186X_POWER_CTRL,
			    PCM186X_PWR_CTRL_PWRDN, 0);

	return 0;
}

static int pcm186x_power_off(struct snd_soc_component *component)
{
	struct pcm186x_priv *priv = snd_soc_component_get_drvdata(component);
	int ret;

	snd_soc_component_update_bits(component, PCM186X_POWER_CTRL,
			    PCM186X_PWR_CTRL_PWRDN, PCM186X_PWR_CTRL_PWRDN);

	regcache_cache_only(priv->regmap, true);

	ret = regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
				     priv->supplies);
	if (ret)
		return ret;

	return 0;
}

static int pcm186x_set_bias_level(struct snd_soc_component *component,
				  enum snd_soc_bias_level level)
{
	dev_dbg(component->dev, "## %s: %d -> %d\n", __func__,
		snd_soc_component_get_bias_level(component), level);

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
			pcm186x_power_on(component);
		break;
	case SND_SOC_BIAS_OFF:
		pcm186x_power_off(component);
		break;
	}

	return 0;
}

static struct snd_soc_component_driver soc_codec_dev_pcm1863 = {
	.set_bias_level		= pcm186x_set_bias_level,
	.controls		= pcm1863_snd_controls,
	.num_controls		= ARRAY_SIZE(pcm1863_snd_controls),
	.dapm_widgets		= pcm1863_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(pcm1863_dapm_widgets),
	.dapm_routes		= pcm1863_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(pcm1863_dapm_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static struct snd_soc_component_driver soc_codec_dev_pcm1865 = {
	.set_bias_level		= pcm186x_set_bias_level,
	.controls		= pcm1865_snd_controls,
	.num_controls		= ARRAY_SIZE(pcm1865_snd_controls),
	.dapm_widgets		= pcm1865_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(pcm1865_dapm_widgets),
	.dapm_routes		= pcm1865_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(pcm1865_dapm_routes),
	.suspend_bias_off	= 1,
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static bool pcm186x_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case PCM186X_PAGE:
	case PCM186X_DEVICE_STATUS:
	case PCM186X_FSAMPLE_STATUS:
	case PCM186X_DIV_STATUS:
	case PCM186X_CLK_STATUS:
	case PCM186X_SUPPLY_STATUS:
	case PCM186X_MMAP_STAT_CTRL:
	case PCM186X_MMAP_ADDRESS:
		return true;
	}

	return false;
}

static const struct regmap_range_cfg pcm186x_range = {
	.name = "Pages",
	.range_max = PCM186X_MAX_REGISTER,
	.selector_reg = PCM186X_PAGE,
	.selector_mask = 0xff,
	.window_len = PCM186X_PAGE_LEN,
};

const struct regmap_config pcm186x_regmap = {
	.reg_bits = 8,
	.val_bits = 8,

	.volatile_reg = pcm186x_volatile,

	.ranges = &pcm186x_range,
	.num_ranges = 1,

	.max_register = PCM186X_MAX_REGISTER,

	.cache_type = REGCACHE_RBTREE,
};
EXPORT_SYMBOL_GPL(pcm186x_regmap);

int pcm186x_probe(struct device *dev, enum pcm186x_type type, int irq,
		  struct regmap *regmap)
{
	struct pcm186x_priv *priv;
	int i, ret;

	priv = devm_kzalloc(dev, sizeof(struct pcm186x_priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	dev_set_drvdata(dev, priv);
	priv->regmap = regmap;

	for (i = 0; i < ARRAY_SIZE(priv->supplies); i++)
		priv->supplies[i].supply = pcm186x_supply_names[i];

	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
				      priv->supplies);
	if (ret) {
		dev_err(dev, "failed to request supplies: %d\n", ret);
		return ret;
	}

	ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies),
				    priv->supplies);
	if (ret) {
		dev_err(dev, "failed enable supplies: %d\n", ret);
		return ret;
	}

	/* Reset device registers for a consistent power-on like state */
	ret = regmap_write(regmap, PCM186X_PAGE, PCM186X_RESET);
	if (ret) {
		dev_err(dev, "failed to write device: %d\n", ret);
		return ret;
	}

	ret = regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
				     priv->supplies);
	if (ret) {
		dev_err(dev, "failed disable supplies: %d\n", ret);
		return ret;
	}

	switch (type) {
	case PCM1865:
	case PCM1864:
		ret = devm_snd_soc_register_component(dev, &soc_codec_dev_pcm1865,
					     &pcm1865_dai, 1);
		break;
	case PCM1863:
	case PCM1862:
	default:
		ret = devm_snd_soc_register_component(dev, &soc_codec_dev_pcm1863,
					     &pcm1863_dai, 1);
	}
	if (ret) {
		dev_err(dev, "failed to register CODEC: %d\n", ret);
		return ret;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(pcm186x_probe);

MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("PCM186x Universal Audio ADC driver");
MODULE_LICENSE("GPL v2");