summaryrefslogtreecommitdiff
path: root/sound/soc/au1x/db1200.c
blob: cdf7be1b9b91095ce0053e0c39595c4f5911ebb1 (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
/*
 * DB1200 ASoC audio fabric support code.
 *
 * (c) 2008-9 Manuel Lauss <manuel.lauss@gmail.com>
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-db1x00/bcsr.h>

#include "../codecs/ac97.h"
#include "../codecs/wm8731.h"
#include "psc.h"

/*-------------------------  AC97 PART  ---------------------------*/

static struct snd_soc_dai_link db1200_ac97_dai = {
	.name		= "AC97",
	.stream_name	= "AC97 HiFi",
	.cpu_dai	= &au1xpsc_ac97_dai,
	.codec_dai	= &ac97_dai,
};

static struct snd_soc_card db1200_ac97_machine = {
	.name		= "DB1200_AC97",
	.dai_link	= &db1200_ac97_dai,
	.num_links	= 1,
	.platform	= &au1xpsc_soc_platform,
};

static struct snd_soc_device db1200_ac97_devdata = {
	.card		= &db1200_ac97_machine,
	.codec_dev	= &soc_codec_dev_ac97,
};

/*-------------------------  I2S PART  ---------------------------*/

static int db1200_i2s_startup(struct snd_pcm_substream *substream)
{
	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;
	int ret;

	/* WM8731 has its own 12MHz crystal */
	snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
				12000000, SND_SOC_CLOCK_IN);

	/* codec is bitclock and lrclk master */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		goto out;

	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		goto out;

	ret = 0;
out:
	return ret;
}

static struct snd_soc_ops db1200_i2s_wm8731_ops = {
	.startup	= db1200_i2s_startup,
};

static struct snd_soc_dai_link db1200_i2s_dai = {
	.name		= "WM8731",
	.stream_name	= "WM8731 PCM",
	.cpu_dai	= &au1xpsc_i2s_dai,
	.codec_dai	= &wm8731_dai,
	.ops		= &db1200_i2s_wm8731_ops,
};

static struct snd_soc_card db1200_i2s_machine = {
	.name		= "DB1200_I2S",
	.dai_link	= &db1200_i2s_dai,
	.num_links	= 1,
	.platform	= &au1xpsc_soc_platform,
};

static struct snd_soc_device db1200_i2s_devdata = {
	.card		= &db1200_i2s_machine,
	.codec_dev	= &soc_codec_dev_wm8731,
};

/*-------------------------  COMMON PART  ---------------------------*/

static struct platform_device *db1200_asoc_dev;

static int __init db1200_audio_load(void)
{
	int ret;

	ret = -ENOMEM;
	db1200_asoc_dev = platform_device_alloc("soc-audio", -1);
	if (!db1200_asoc_dev)
		goto out;

	/* DB1200 board setup set PSC1MUX to preferred audio device */
	if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX)
		platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_devdata);
	else
		platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_devdata);

	db1200_ac97_devdata.dev = &db1200_asoc_dev->dev;
	db1200_i2s_devdata.dev = &db1200_asoc_dev->dev;
	ret = platform_device_add(db1200_asoc_dev);

	if (ret) {
		platform_device_put(db1200_asoc_dev);
		db1200_asoc_dev = NULL;
	}
out:
	return ret;
}

static void __exit db1200_audio_unload(void)
{
	platform_device_unregister(db1200_asoc_dev);
}

module_init(db1200_audio_load);
module_exit(db1200_audio_unload);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DB1200 ASoC audio support");
MODULE_AUTHOR("Manuel Lauss");