summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/sirf-audio-codec.c
blob: 7ae8c181d1a4284aebe5e6095a897df3a6c73854 (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
/*
 * SiRF audio codec driver
 *
 * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
 *
 * Licensed under GPLv2 or later.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>

#include "sirf-audio-codec.h"

struct sirf_audio_codec {
	struct clk *clk;
	struct regmap *regmap;
	u32 reg_ctrl0, reg_ctrl1;
};

static const char * const input_mode_mux[] = {"Single-ended",
	"Differential"};

static const struct soc_enum input_mode_mux_enum =
	SOC_ENUM_SINGLE(AUDIO_IC_CODEC_CTRL1, 4, 2, input_mode_mux);

static const struct snd_kcontrol_new sirf_audio_codec_input_mode_control =
	SOC_DAPM_ENUM("Route", input_mode_mux_enum);

static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -12400, 100, 0);
static const DECLARE_TLV_DB_SCALE(capture_vol_tlv_prima2, 500, 100, 0);
static const DECLARE_TLV_DB_RANGE(capture_vol_tlv_atlas6,
	0, 7, TLV_DB_SCALE_ITEM(-100, 100, 0),
	0x22, 0x3F, TLV_DB_SCALE_ITEM(700, 100, 0),
);

static struct snd_kcontrol_new volume_controls_atlas6[] = {
	SOC_DOUBLE_TLV("Playback Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
			0x7F, 0, playback_vol_tlv),
	SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 16, 10,
			0x3F, 0, capture_vol_tlv_atlas6),
};

static struct snd_kcontrol_new volume_controls_prima2[] = {
	SOC_DOUBLE_TLV("Speaker Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
			0x7F, 0, playback_vol_tlv),
	SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 15, 10,
			0x1F, 0, capture_vol_tlv_prima2),
};

static struct snd_kcontrol_new left_input_path_controls[] = {
	SOC_DAPM_SINGLE("Line Left Switch", AUDIO_IC_CODEC_CTRL1, 6, 1, 0),
	SOC_DAPM_SINGLE("Mic Left Switch", AUDIO_IC_CODEC_CTRL1, 3, 1, 0),
};

static struct snd_kcontrol_new right_input_path_controls[] = {
	SOC_DAPM_SINGLE("Line Right Switch", AUDIO_IC_CODEC_CTRL1, 5, 1, 0),
	SOC_DAPM_SINGLE("Mic Right Switch", AUDIO_IC_CODEC_CTRL1, 2, 1, 0),
};

static struct snd_kcontrol_new left_dac_to_hp_left_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 9, 1, 0);

static struct snd_kcontrol_new left_dac_to_hp_right_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 8, 1, 0);

static struct snd_kcontrol_new right_dac_to_hp_left_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 7, 1, 0);

static struct snd_kcontrol_new right_dac_to_hp_right_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 6, 1, 0);

static struct snd_kcontrol_new left_dac_to_speaker_lineout_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 11, 1, 0);

static struct snd_kcontrol_new right_dac_to_speaker_lineout_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 10, 1, 0);

/* After enable adc, Delay 200ms to avoid pop noise */
static int adc_enable_delay_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
	switch (event) {
	case SND_SOC_DAPM_POST_PMU:
		msleep(200);
		break;
	default:
		break;
	}

	return 0;
}

static void enable_and_reset_codec(struct regmap *regmap,
		u32 codec_enable_bits, u32 codec_reset_bits)
{
	regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
			codec_enable_bits | codec_reset_bits,
			codec_enable_bits);
	msleep(20);
	regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
			codec_reset_bits, codec_reset_bits);
}

static int atlas6_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
#define ATLAS6_CODEC_ENABLE_BITS (1 << 29)
#define ATLAS6_CODEC_RESET_BITS (1 << 28)
	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
	struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		enable_and_reset_codec(sirf_audio_codec->regmap,
			ATLAS6_CODEC_ENABLE_BITS, ATLAS6_CODEC_RESET_BITS);
		break;
	case SND_SOC_DAPM_POST_PMD:
		regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_IC_CODEC_CTRL1, ATLAS6_CODEC_ENABLE_BITS, 0);
		break;
	default:
		break;
	}

	return 0;
}

static int prima2_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
#define PRIMA2_CODEC_ENABLE_BITS (1 << 27)
#define PRIMA2_CODEC_RESET_BITS (1 << 26)
	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
	struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
	switch (event) {
	case SND_SOC_DAPM_POST_PMU:
		enable_and_reset_codec(sirf_audio_codec->regmap,
			PRIMA2_CODEC_ENABLE_BITS, PRIMA2_CODEC_RESET_BITS);
		break;
	case SND_SOC_DAPM_POST_PMD:
		regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_IC_CODEC_CTRL1, PRIMA2_CODEC_ENABLE_BITS, 0);
		break;
	default:
		break;
	}

	return 0;
}

static const struct snd_soc_dapm_widget atlas6_output_driver_dapm_widgets[] = {
	SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
			25, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
			26, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
			27, 0, NULL, 0),
};

static const struct snd_soc_dapm_widget prima2_output_driver_dapm_widgets[] = {
	SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
			23, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
			24, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
			25, 0, NULL, 0),
};

static const struct snd_soc_dapm_widget atlas6_codec_clock_dapm_widget =
	SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
			atlas6_codec_enable_and_reset_event,
			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);

static const struct snd_soc_dapm_widget prima2_codec_clock_dapm_widget =
	SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
			prima2_codec_enable_and_reset_event,
			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);

static const struct snd_soc_dapm_widget sirf_audio_codec_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC left", NULL, AUDIO_IC_CODEC_CTRL0, 1, 0),
	SND_SOC_DAPM_DAC("DAC right", NULL, AUDIO_IC_CODEC_CTRL0, 0, 0),
	SND_SOC_DAPM_SWITCH("Left dac to hp left amp", SND_SOC_NOPM, 0, 0,
			&left_dac_to_hp_left_amp_switch_control),
	SND_SOC_DAPM_SWITCH("Left dac to hp right amp", SND_SOC_NOPM, 0, 0,
			&left_dac_to_hp_right_amp_switch_control),
	SND_SOC_DAPM_SWITCH("Right dac to hp left amp", SND_SOC_NOPM, 0, 0,
			&right_dac_to_hp_left_amp_switch_control),
	SND_SOC_DAPM_SWITCH("Right dac to hp right amp", SND_SOC_NOPM, 0, 0,
			&right_dac_to_hp_right_amp_switch_control),
	SND_SOC_DAPM_OUT_DRV("HP amp left driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
			NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HP amp right driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
			NULL, 0),

	SND_SOC_DAPM_SWITCH("Left dac to speaker lineout", SND_SOC_NOPM, 0, 0,
			&left_dac_to_speaker_lineout_switch_control),
	SND_SOC_DAPM_SWITCH("Right dac to speaker lineout", SND_SOC_NOPM, 0, 0,
			&right_dac_to_speaker_lineout_switch_control),
	SND_SOC_DAPM_OUT_DRV("Speaker amp driver", AUDIO_IC_CODEC_CTRL0, 4, 0,
			NULL, 0),

	SND_SOC_DAPM_OUTPUT("HPOUTL"),
	SND_SOC_DAPM_OUTPUT("HPOUTR"),
	SND_SOC_DAPM_OUTPUT("SPKOUT"),

	SND_SOC_DAPM_ADC_E("ADC left", NULL, AUDIO_IC_CODEC_CTRL1, 8, 0,
			adc_enable_delay_event, SND_SOC_DAPM_POST_PMU),
	SND_SOC_DAPM_ADC_E("ADC right", NULL, AUDIO_IC_CODEC_CTRL1, 7, 0,
			adc_enable_delay_event, SND_SOC_DAPM_POST_PMU),
	SND_SOC_DAPM_MIXER("Left PGA mixer", AUDIO_IC_CODEC_CTRL1, 1, 0,
		&left_input_path_controls[0],
		ARRAY_SIZE(left_input_path_controls)),
	SND_SOC_DAPM_MIXER("Right PGA mixer", AUDIO_IC_CODEC_CTRL1, 0, 0,
		&right_input_path_controls[0],
		ARRAY_SIZE(right_input_path_controls)),

	SND_SOC_DAPM_MUX("Mic input mode mux", SND_SOC_NOPM, 0, 0,
			&sirf_audio_codec_input_mode_control),
	SND_SOC_DAPM_MICBIAS("Mic Bias", AUDIO_IC_CODEC_PWR, 3, 0),
	SND_SOC_DAPM_INPUT("MICIN1"),
	SND_SOC_DAPM_INPUT("MICIN2"),
	SND_SOC_DAPM_INPUT("LINEIN1"),
	SND_SOC_DAPM_INPUT("LINEIN2"),

	SND_SOC_DAPM_SUPPLY("HSL Phase Opposite", AUDIO_IC_CODEC_CTRL0,
			30, 0, NULL, 0),
};

static const struct snd_soc_dapm_route sirf_audio_codec_map[] = {
	{"SPKOUT", NULL, "Speaker Driver"},
	{"Speaker Driver", NULL, "Speaker amp driver"},
	{"Speaker amp driver", NULL, "Left dac to speaker lineout"},
	{"Speaker amp driver", NULL, "Right dac to speaker lineout"},
	{"Left dac to speaker lineout", "Switch", "DAC left"},
	{"Right dac to speaker lineout", "Switch", "DAC right"},
	{"HPOUTL", NULL, "HP Left Driver"},
	{"HPOUTR", NULL, "HP Right Driver"},
	{"HP Left Driver", NULL, "HP amp left driver"},
	{"HP Right Driver", NULL, "HP amp right driver"},
	{"HP amp left driver", NULL, "Right dac to hp left amp"},
	{"HP amp right driver", NULL , "Right dac to hp right amp"},
	{"HP amp left driver", NULL, "Left dac to hp left amp"},
	{"HP amp right driver", NULL , "Right dac to hp right amp"},
	{"Right dac to hp left amp", "Switch", "DAC left"},
	{"Right dac to hp right amp", "Switch", "DAC right"},
	{"Left dac to hp left amp", "Switch", "DAC left"},
	{"Left dac to hp right amp", "Switch", "DAC right"},
	{"DAC left", NULL, "codecclk"},
	{"DAC right", NULL, "codecclk"},
	{"DAC left", NULL, "Playback"},
	{"DAC right", NULL, "Playback"},
	{"DAC left", NULL, "HSL Phase Opposite"},
	{"DAC right", NULL, "HSL Phase Opposite"},

	{"Capture", NULL, "ADC left"},
	{"Capture", NULL, "ADC right"},
	{"ADC left", NULL, "codecclk"},
	{"ADC right", NULL, "codecclk"},
	{"ADC left", NULL, "Left PGA mixer"},
	{"ADC right", NULL, "Right PGA mixer"},
	{"Left PGA mixer", "Line Left Switch", "LINEIN2"},
	{"Right PGA mixer", "Line Right Switch", "LINEIN1"},
	{"Left PGA mixer", "Mic Left Switch", "MICIN2"},
	{"Right PGA mixer", "Mic Right Switch", "Mic input mode mux"},
	{"Mic input mode mux", "Single-ended", "MICIN1"},
	{"Mic input mode mux", "Differential", "MICIN1"},
};

static void sirf_audio_codec_tx_enable(struct sirf_audio_codec *sirf_audio_codec)
{
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
		AUDIO_FIFO_RESET, AUDIO_FIFO_RESET);
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
		AUDIO_FIFO_RESET, ~AUDIO_FIFO_RESET);
	regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_INT_MSK, 0);
	regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0);
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
		AUDIO_FIFO_START, AUDIO_FIFO_START);
	regmap_update_bits(sirf_audio_codec->regmap,
		AUDIO_PORT_IC_CODEC_TX_CTRL, IC_TX_ENABLE, IC_TX_ENABLE);
}

static void sirf_audio_codec_tx_disable(struct sirf_audio_codec *sirf_audio_codec)
{
	regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0);
	regmap_update_bits(sirf_audio_codec->regmap,
		AUDIO_PORT_IC_CODEC_TX_CTRL, IC_TX_ENABLE, ~IC_TX_ENABLE);
}

static void sirf_audio_codec_rx_enable(struct sirf_audio_codec *sirf_audio_codec,
	int channels)
{
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
		AUDIO_FIFO_RESET, AUDIO_FIFO_RESET);
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
		AUDIO_FIFO_RESET, ~AUDIO_FIFO_RESET);
	regmap_write(sirf_audio_codec->regmap,
		AUDIO_PORT_IC_RXFIFO_INT_MSK, 0);
	regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP, 0);
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
		AUDIO_FIFO_START, AUDIO_FIFO_START);
	if (channels == 1)
		regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_PORT_IC_CODEC_RX_CTRL,
			IC_RX_ENABLE_MONO, IC_RX_ENABLE_MONO);
	else
		regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_PORT_IC_CODEC_RX_CTRL,
			IC_RX_ENABLE_STEREO, IC_RX_ENABLE_STEREO);
}

static void sirf_audio_codec_rx_disable(struct sirf_audio_codec *sirf_audio_codec)
{
	regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_PORT_IC_CODEC_RX_CTRL,
			IC_RX_ENABLE_STEREO, ~IC_RX_ENABLE_STEREO);
}

static int sirf_audio_codec_trigger(struct snd_pcm_substream *substream,
		int cmd,
		struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
	int playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;

	/*
	 * This is a workaround, When stop playback,
	 * need disable HP amp, avoid the current noise.
	 */
	switch (cmd) {
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		if (playback) {
			snd_soc_update_bits(codec, AUDIO_IC_CODEC_CTRL0,
				IC_HSLEN | IC_HSREN, 0);
			sirf_audio_codec_tx_disable(sirf_audio_codec);
		} else
			sirf_audio_codec_rx_disable(sirf_audio_codec);
		break;
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		if (playback) {
			sirf_audio_codec_tx_enable(sirf_audio_codec);
			snd_soc_update_bits(codec, AUDIO_IC_CODEC_CTRL0,
				IC_HSLEN | IC_HSREN, IC_HSLEN | IC_HSREN);
		} else
			sirf_audio_codec_rx_enable(sirf_audio_codec,
				substream->runtime->channels);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static const struct snd_soc_dai_ops sirf_audio_codec_dai_ops = {
	.trigger = sirf_audio_codec_trigger,
};

static struct snd_soc_dai_driver sirf_audio_codec_dai = {
	.name = "sirf-audio-codec",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	.ops = &sirf_audio_codec_dai_ops,
};

static int sirf_audio_codec_probe(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);

	pm_runtime_enable(codec->dev);

	if (of_device_is_compatible(codec->dev->of_node, "sirf,prima2-audio-codec")) {
		snd_soc_dapm_new_controls(dapm,
			prima2_output_driver_dapm_widgets,
			ARRAY_SIZE(prima2_output_driver_dapm_widgets));
		snd_soc_dapm_new_controls(dapm,
			&prima2_codec_clock_dapm_widget, 1);
		return snd_soc_add_codec_controls(codec,
			volume_controls_prima2,
			ARRAY_SIZE(volume_controls_prima2));
	}
	if (of_device_is_compatible(codec->dev->of_node, "sirf,atlas6-audio-codec")) {
		snd_soc_dapm_new_controls(dapm,
			atlas6_output_driver_dapm_widgets,
			ARRAY_SIZE(atlas6_output_driver_dapm_widgets));
		snd_soc_dapm_new_controls(dapm,
			&atlas6_codec_clock_dapm_widget, 1);
		return snd_soc_add_codec_controls(codec,
			volume_controls_atlas6,
			ARRAY_SIZE(volume_controls_atlas6));
	}

	return -EINVAL;
}

static int sirf_audio_codec_remove(struct snd_soc_codec *codec)
{
	pm_runtime_disable(codec->dev);
	return 0;
}

static const struct snd_soc_codec_driver soc_codec_device_sirf_audio_codec = {
	.probe = sirf_audio_codec_probe,
	.remove = sirf_audio_codec_remove,
	.component_driver = {
		.dapm_widgets = sirf_audio_codec_dapm_widgets,
		.num_dapm_widgets = ARRAY_SIZE(sirf_audio_codec_dapm_widgets),
		.dapm_routes = sirf_audio_codec_map,
		.num_dapm_routes = ARRAY_SIZE(sirf_audio_codec_map),
	},
	.idle_bias_off = true,
};

static const struct of_device_id sirf_audio_codec_of_match[] = {
	{ .compatible = "sirf,prima2-audio-codec" },
	{ .compatible = "sirf,atlas6-audio-codec" },
	{}
};
MODULE_DEVICE_TABLE(of, sirf_audio_codec_of_match);

static const struct regmap_config sirf_audio_codec_regmap_config = {
	.reg_bits = 32,
	.reg_stride = 4,
	.val_bits = 32,
	.max_register = AUDIO_PORT_IC_RXFIFO_INT_MSK,
	.cache_type = REGCACHE_NONE,
};

static int sirf_audio_codec_driver_probe(struct platform_device *pdev)
{
	int ret;
	struct sirf_audio_codec *sirf_audio_codec;
	void __iomem *base;
	struct resource *mem_res;
	const struct of_device_id *match;

	match = of_match_node(sirf_audio_codec_of_match, pdev->dev.of_node);

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

	platform_set_drvdata(pdev, sirf_audio_codec);

	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	base = devm_ioremap_resource(&pdev->dev, mem_res);
	if (IS_ERR(base))
		return PTR_ERR(base);

	sirf_audio_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
					    &sirf_audio_codec_regmap_config);
	if (IS_ERR(sirf_audio_codec->regmap))
		return PTR_ERR(sirf_audio_codec->regmap);

	sirf_audio_codec->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(sirf_audio_codec->clk)) {
		dev_err(&pdev->dev, "Get clock failed.\n");
		return PTR_ERR(sirf_audio_codec->clk);
	}

	ret = clk_prepare_enable(sirf_audio_codec->clk);
	if (ret) {
		dev_err(&pdev->dev, "Enable clock failed.\n");
		return ret;
	}

	ret = snd_soc_register_codec(&(pdev->dev),
			&soc_codec_device_sirf_audio_codec,
			&sirf_audio_codec_dai, 1);
	if (ret) {
		dev_err(&pdev->dev, "Register Audio Codec dai failed.\n");
		goto err_clk_put;
	}

	/*
	 * Always open charge pump, if not, when the charge pump closed the
	 * adc will not stable
	 */
	regmap_update_bits(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
		IC_CPFREQ, IC_CPFREQ);

	if (of_device_is_compatible(pdev->dev.of_node, "sirf,atlas6-audio-codec"))
		regmap_update_bits(sirf_audio_codec->regmap,
				AUDIO_IC_CODEC_CTRL0, IC_CPEN, IC_CPEN);
	return 0;

err_clk_put:
	clk_disable_unprepare(sirf_audio_codec->clk);
	return ret;
}

static int sirf_audio_codec_driver_remove(struct platform_device *pdev)
{
	struct sirf_audio_codec *sirf_audio_codec = platform_get_drvdata(pdev);

	clk_disable_unprepare(sirf_audio_codec->clk);
	snd_soc_unregister_codec(&(pdev->dev));

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int sirf_audio_codec_suspend(struct device *dev)
{
	struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(dev);

	regmap_read(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
		&sirf_audio_codec->reg_ctrl0);
	regmap_read(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL1,
		&sirf_audio_codec->reg_ctrl1);
	clk_disable_unprepare(sirf_audio_codec->clk);

	return 0;
}

static int sirf_audio_codec_resume(struct device *dev)
{
	struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(dev);
	int ret;

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

	regmap_write(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
		sirf_audio_codec->reg_ctrl0);
	regmap_write(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL1,
		sirf_audio_codec->reg_ctrl1);

	return 0;
}
#endif

static const struct dev_pm_ops sirf_audio_codec_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(sirf_audio_codec_suspend, sirf_audio_codec_resume)
};

static struct platform_driver sirf_audio_codec_driver = {
	.driver = {
		.name = "sirf-audio-codec",
		.of_match_table = sirf_audio_codec_of_match,
		.pm = &sirf_audio_codec_pm_ops,
	},
	.probe = sirf_audio_codec_driver_probe,
	.remove = sirf_audio_codec_driver_remove,
};

module_platform_driver(sirf_audio_codec_driver);

MODULE_DESCRIPTION("SiRF audio codec driver");
MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>");
MODULE_LICENSE("GPL v2");