aboutsummaryrefslogtreecommitdiff
path: root/sound/soc/s3c24xx/neo1973_wm8753.c
blob: 22e281ef639eac7c49f3d68e541276d9bd4549fe (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
/*
 * neo1973_wm8753.c  --  SoC audio for Neo1973
 *
 * Copyright 2007 Wolfson Microelectronics PLC.
 * Author: Graeme Gregory
 *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>

#include <asm/hardware/scoop.h>
#include <asm/arch/regs-clock.h>
#include <asm/arch/regs-gpio.h>
#include <asm/hardware.h>
#include <asm/arch/audio.h>
#include <linux/io.h>
#include <asm/arch/spi-gpio.h>

#include <asm/plat-s3c24xx/regs-iis.h>

#include "../codecs/wm8753.h"
#include "lm4857.h"
#include "s3c24xx-pcm.h"
#include "s3c24xx-i2s.h"

/* Debugging stuff */
#define S3C24XX_SOC_NEO1973_WM8753_DEBUG 0
#if S3C24XX_SOC_NEO1973_WM8753_DEBUG
#define DBG(x...) printk(KERN_DEBUG "s3c24xx-soc-neo1973-wm8753: " x)
#else
#define DBG(x...)
#endif

/* define the scenarios */
#define NEO_AUDIO_OFF			0
#define NEO_GSM_CALL_AUDIO_HANDSET	1
#define NEO_GSM_CALL_AUDIO_HEADSET	2
#define NEO_GSM_CALL_AUDIO_BLUETOOTH	3
#define NEO_STEREO_TO_SPEAKERS		4
#define NEO_STEREO_TO_HEADPHONES	5
#define NEO_CAPTURE_HANDSET		6
#define NEO_CAPTURE_HEADSET		7
#define NEO_CAPTURE_BLUETOOTH		8

static struct snd_soc_machine neo1973;
static struct i2c_client *i2c;

static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	unsigned int pll_out = 0, bclk = 0;
	int ret = 0;
	unsigned long iis_clkrate;

	DBG("Entered %s\n", __func__);

	iis_clkrate = s3c24xx_i2s_get_clockrate();

	switch (params_rate(params)) {
	case 8000:
	case 16000:
		pll_out = 12288000;
		break;
	case 48000:
		bclk = WM8753_BCLK_DIV_4;
		pll_out = 12288000;
		break;
	case 96000:
		bclk = WM8753_BCLK_DIV_2;
		pll_out = 12288000;
		break;
	case 11025:
		bclk = WM8753_BCLK_DIV_16;
		pll_out = 11289600;
		break;
	case 22050:
		bclk = WM8753_BCLK_DIV_8;
		pll_out = 11289600;
		break;
	case 44100:
		bclk = WM8753_BCLK_DIV_4;
		pll_out = 11289600;
		break;
	case 88200:
		bclk = WM8753_BCLK_DIV_2;
		pll_out = 11289600;
		break;
	}

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai,
		SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai,
		SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	/* set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
		SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* set MCLK division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
		S3C2410_IISMOD_32FS);
	if (ret < 0)
		return ret;

	/* set codec BCLK division for sample rate */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
	if (ret < 0)
		return ret;

	/* set prescaler division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
		S3C24XX_PRESCALE(4, 4));
	if (ret < 0)
		return ret;

	/* codec PLL input is PCLK/4 */
	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
		iis_clkrate / 4, pll_out);
	if (ret < 0)
		return ret;

	return 0;
}

static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;

	DBG("Entered %s\n", __func__);

	/* disable the PLL */
	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
}

/*
 * Neo1973 WM8753 HiFi DAI opserations.
 */
static struct snd_soc_ops neo1973_hifi_ops = {
	.hw_params = neo1973_hifi_hw_params,
	.hw_free = neo1973_hifi_hw_free,
};

static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	unsigned int pcmdiv = 0;
	int ret = 0;
	unsigned long iis_clkrate;

	DBG("Entered %s\n", __func__);

	iis_clkrate = s3c24xx_i2s_get_clockrate();

	if (params_rate(params) != 8000)
		return -EINVAL;
	if (params_channels(params) != 1)
		return -EINVAL;

	pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */

	/* todo: gg check mode (DSP_B) against CSR datasheet */
	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
		SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* set codec PCM division for sample rate */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
	if (ret < 0)
		return ret;

	/* configue and enable PLL for 12.288MHz output */
	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
		iis_clkrate / 4, 12288000);
	if (ret < 0)
		return ret;

	return 0;
}

static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;

	DBG("Entered %s\n", __func__);

	/* disable the PLL */
	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
}

static struct snd_soc_ops neo1973_voice_ops = {
	.hw_params = neo1973_voice_hw_params,
	.hw_free = neo1973_voice_hw_free,
};

static int neo1973_scenario;

static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = neo1973_scenario;
	return 0;
}

static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
{
	DBG("Entered %s\n", __func__);

	switch (neo1973_scenario) {
	case NEO_AUDIO_OFF:
		snd_soc_dapm_disable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	case NEO_GSM_CALL_AUDIO_HANDSET:
		snd_soc_dapm_enable_pin(codec, "Audio Out");
		snd_soc_dapm_enable_pin(codec, "GSM Line Out");
		snd_soc_dapm_enable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_enable_pin(codec, "Call Mic");
		break;
	case NEO_GSM_CALL_AUDIO_HEADSET:
		snd_soc_dapm_enable_pin(codec, "Audio Out");
		snd_soc_dapm_enable_pin(codec, "GSM Line Out");
		snd_soc_dapm_enable_pin(codec, "GSM Line In");
		snd_soc_dapm_enable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	case NEO_GSM_CALL_AUDIO_BLUETOOTH:
		snd_soc_dapm_disable_pin(codec, "Audio Out");
		snd_soc_dapm_enable_pin(codec, "GSM Line Out");
		snd_soc_dapm_enable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	case NEO_STEREO_TO_SPEAKERS:
		snd_soc_dapm_enable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	case NEO_STEREO_TO_HEADPHONES:
		snd_soc_dapm_enable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	case NEO_CAPTURE_HANDSET:
		snd_soc_dapm_disable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_enable_pin(codec, "Call Mic");
		break;
	case NEO_CAPTURE_HEADSET:
		snd_soc_dapm_disable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_enable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	case NEO_CAPTURE_BLUETOOTH:
		snd_soc_dapm_disable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
		break;
	default:
		snd_soc_dapm_disable_pin(codec, "Audio Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line Out");
		snd_soc_dapm_disable_pin(codec, "GSM Line In");
		snd_soc_dapm_disable_pin(codec, "Headset Mic");
		snd_soc_dapm_disable_pin(codec, "Call Mic");
	}

	snd_soc_dapm_sync(codec);

	return 0;
}

static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

	DBG("Entered %s\n", __func__);

	if (neo1973_scenario == ucontrol->value.integer.value[0])
		return 0;

	neo1973_scenario = ucontrol->value.integer.value[0];
	set_scenario_endpoints(codec, neo1973_scenario);
	return 1;
}

static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};

static void lm4857_write_regs(void)
{
	DBG("Entered %s\n", __func__);

	if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
		printk(KERN_ERR "lm4857: i2c write failed\n");
}

static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	int reg = kcontrol->private_value & 0xFF;
	int shift = (kcontrol->private_value >> 8) & 0x0F;
	int mask = (kcontrol->private_value >> 16) & 0xFF;

	DBG("Entered %s\n", __func__);

	ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
	return 0;
}

static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	int reg = kcontrol->private_value & 0xFF;
	int shift = (kcontrol->private_value >> 8) & 0x0F;
	int mask = (kcontrol->private_value >> 16) & 0xFF;

	if (((lm4857_regs[reg] >> shift) & mask) ==
		ucontrol->value.integer.value[0])
		return 0;

	lm4857_regs[reg] &= ~(mask << shift);
	lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
	lm4857_write_regs();
	return 1;
}

static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;

	DBG("Entered %s\n", __func__);

	if (value)
		value -= 5;

	ucontrol->value.integer.value[0] = value;
	return 0;
}

static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	u8 value = ucontrol->value.integer.value[0];

	DBG("Entered %s\n", __func__);

	if (value)
		value += 5;

	if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
		return 0;

	lm4857_regs[LM4857_CTRL] &= 0xF0;
	lm4857_regs[LM4857_CTRL] |= value;
	lm4857_write_regs();
	return 1;
}

static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
	SND_SOC_DAPM_LINE("Audio Out", NULL),
	SND_SOC_DAPM_LINE("GSM Line Out", NULL),
	SND_SOC_DAPM_LINE("GSM Line In", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Call Mic", NULL),
};


static const struct snd_soc_dapm_route dapm_routes[] = {

	/* Connections to the lm4857 amp */
	{"Audio Out", NULL, "LOUT1"},
	{"Audio Out", NULL, "ROUT1"},

	/* Connections to the GSM Module */
	{"GSM Line Out", NULL, "MONO1"},
	{"GSM Line Out", NULL, "MONO2"},
	{"RXP", NULL, "GSM Line In"},
	{"RXN", NULL, "GSM Line In"},

	/* Connections to Headset */
	{"MIC1", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Headset Mic"},

	/* Call Mic */
	{"MIC2", NULL, "Mic Bias"},
	{"MIC2N", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Call Mic"},

	/* Connect the ALC pins */
	{"ACIN", NULL, "ACOP"},
};

static const char *lm4857_mode[] = {
	"Off",
	"Call Speaker",
	"Stereo Speakers",
	"Stereo Speakers + Headphones",
	"Headphones"
};

static const struct soc_enum lm4857_mode_enum[] = {
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
};

static const char *neo_scenarios[] = {
	"Off",
	"GSM Handset",
	"GSM Headset",
	"GSM Bluetooth",
	"Speakers",
	"Headphones",
	"Capture Handset",
	"Capture Headset",
	"Capture Bluetooth"
};

static const struct soc_enum neo_scenario_enum[] = {
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
};

static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);

static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
	SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
		lm4857_get_reg, lm4857_set_reg, stereo_tlv),
	SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
		lm4857_get_reg, lm4857_set_reg, stereo_tlv),
	SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
		lm4857_get_reg, lm4857_set_reg, mono_tlv),
	SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
		lm4857_get_mode, lm4857_set_mode),
	SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
		neo1973_get_scenario, neo1973_set_scenario),
	SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
		lm4857_get_reg, lm4857_set_reg),
	SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
		lm4857_get_reg, lm4857_set_reg),
	SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
		lm4857_get_reg, lm4857_set_reg),
	SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
		lm4857_get_reg, lm4857_set_reg),
};

/*
 * This is an example machine initialisation for a wm8753 connected to a
 * neo1973 II. It is missing logic to detect hp/mic insertions and logic
 * to re-route the audio in such an event.
 */
static int neo1973_wm8753_init(struct snd_soc_codec *codec)
{
	int i, err;

	DBG("Entered %s\n", __func__);

	/* set up NC codec pins */
	snd_soc_dapm_disable_pin(codec, "LOUT2");
	snd_soc_dapm_disable_pin(codec, "ROUT2");
	snd_soc_dapm_disable_pin(codec, "OUT3");
	snd_soc_dapm_disable_pin(codec, "OUT4");
	snd_soc_dapm_disable_pin(codec, "LINE1");
	snd_soc_dapm_disable_pin(codec, "LINE2");


	/* set endpoints to default mode */
	set_scenario_endpoints(codec, NEO_AUDIO_OFF);

	/* Add neo1973 specific widgets */
	snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
				  ARRAY_SIZE(wm8753_dapm_widgets));

	/* add neo1973 specific controls */
	for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_controls); i++) {
		err = snd_ctl_add(codec->card,
				snd_soc_cnew(&wm8753_neo1973_controls[i],
				codec, NULL));
		if (err < 0)
			return err;
	}

	/* set up neo1973 specific audio routes */
	err = snd_soc_dapm_add_routes(codec, dapm_routes,
				      ARRAY_SIZE(dapm_routes));

	snd_soc_dapm_sync(codec);
	return 0;
}

/*
 * BT Codec DAI
 */
static struct snd_soc_dai bt_dai = {
	.name = "Bluetooth",
	.id = 0,
	.type = SND_SOC_DAI_PCM,
	.playback = {
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
	.capture = {
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
};

static struct snd_soc_dai_link neo1973_dai[] = {
{ /* Hifi Playback - for similatious use with voice below */
	.name = "WM8753",
	.stream_name = "WM8753 HiFi",
	.cpu_dai = &s3c24xx_i2s_dai,
	.codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
	.init = neo1973_wm8753_init,
	.ops = &neo1973_hifi_ops,
},
{ /* Voice via BT */
	.name = "Bluetooth",
	.stream_name = "Voice",
	.cpu_dai = &bt_dai,
	.codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
	.ops = &neo1973_voice_ops,
},
};

static struct snd_soc_machine neo1973 = {
	.name = "neo1973",
	.dai_link = neo1973_dai,
	.num_links = ARRAY_SIZE(neo1973_dai),
};

static struct wm8753_setup_data neo1973_wm8753_setup = {
	.i2c_address = 0x1a,
};

static struct snd_soc_device neo1973_snd_devdata = {
	.machine = &neo1973,
	.platform = &s3c24xx_soc_platform,
	.codec_dev = &soc_codec_dev_wm8753,
	.codec_data = &neo1973_wm8753_setup,
};

static struct i2c_client client_template;

static const unsigned short normal_i2c[] = { 0x7C, I2C_CLIENT_END };

/* Magic definition of all other variables and things */
I2C_CLIENT_INSMOD;

static int lm4857_amp_probe(struct i2c_adapter *adap, int addr, int kind)
{
	int ret;

	DBG("Entered %s\n", __func__);

	client_template.adapter = adap;
	client_template.addr = addr;

	i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
	if (i2c == NULL)
		return -ENOMEM;

	ret = i2c_attach_client(i2c);
	if (ret < 0) {
		printk(KERN_ERR "LM4857 failed to attach at addr %x\n", addr);
		goto exit_err;
	}

	lm4857_write_regs();
	return ret;

exit_err:
	kfree(i2c);
	return ret;
}

static int lm4857_i2c_detach(struct i2c_client *client)
{
	DBG("Entered %s\n", __func__);

	i2c_detach_client(client);
	kfree(client);
	return 0;
}

static int lm4857_i2c_attach(struct i2c_adapter *adap)
{
	DBG("Entered %s\n", __func__);

	return i2c_probe(adap, &addr_data, lm4857_amp_probe);
}

static u8 lm4857_state;

static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
{
	DBG("Entered %s\n", __func__);

	dev_dbg(&dev->dev, "lm4857_suspend\n");
	lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
	if (lm4857_state) {
		lm4857_regs[LM4857_CTRL] &= 0xf0;
		lm4857_write_regs();
	}
	return 0;
}

static int lm4857_resume(struct i2c_client *dev)
{
	DBG("Entered %s\n", __func__);

	if (lm4857_state) {
		lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
		lm4857_write_regs();
	}
	return 0;
}

static void lm4857_shutdown(struct i2c_client *dev)
{
	DBG("Entered %s\n", __func__);

	dev_dbg(&dev->dev, "lm4857_shutdown\n");
	lm4857_regs[LM4857_CTRL] &= 0xf0;
	lm4857_write_regs();
}

/* corgi i2c codec control layer */
static struct i2c_driver lm4857_i2c_driver = {
	.driver = {
		.name = "LM4857 I2C Amp",
		.owner = THIS_MODULE,
	},
	.id =             I2C_DRIVERID_LM4857,
	.suspend =        lm4857_suspend,
	.resume	=         lm4857_resume,
	.shutdown =       lm4857_shutdown,
	.attach_adapter = lm4857_i2c_attach,
	.detach_client =  lm4857_i2c_detach,
	.command =        NULL,
};

static struct i2c_client client_template = {
	.name =   "LM4857",
	.driver = &lm4857_i2c_driver,
};

static struct platform_device *neo1973_snd_device;

static int __init neo1973_init(void)
{
	int ret;

	DBG("Entered %s\n", __func__);

	neo1973_snd_device = platform_device_alloc("soc-audio", -1);
	if (!neo1973_snd_device)
		return -ENOMEM;

	platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
	neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
	ret = platform_device_add(neo1973_snd_device);

	if (ret)
		platform_device_put(neo1973_snd_device);

	ret = i2c_add_driver(&lm4857_i2c_driver);
	if (ret != 0)
		printk(KERN_ERR "can't add i2c driver");

	return ret;
}

static void __exit neo1973_exit(void)
{
	DBG("Entered %s\n", __func__);

	i2c_del_driver(&lm4857_i2c_driver);
	platform_device_unregister(neo1973_snd_device);
}

module_init(neo1973_init);
module_exit(neo1973_exit);

/* Module information */
MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
MODULE_LICENSE("GPL");