Merge tag 'for-linus' of git://github.com/rustyrussell/linux
[linux-2.6.git] / sound / soc / au1x / db1200.c
1 /*
2  * DB1200 ASoC audio fabric support code.
3  *
4  * (c) 2008-2011 Manuel Lauss <manuel.lauss@googlemail.com>
5  *
6  */
7
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/timer.h>
11 #include <linux/interrupt.h>
12 #include <linux/platform_device.h>
13 #include <sound/core.h>
14 #include <sound/pcm.h>
15 #include <sound/soc.h>
16 #include <asm/mach-au1x00/au1000.h>
17 #include <asm/mach-au1x00/au1xxx_psc.h>
18 #include <asm/mach-au1x00/au1xxx_dbdma.h>
19 #include <asm/mach-db1x00/bcsr.h>
20
21 #include "../codecs/wm8731.h"
22 #include "psc.h"
23
24 static struct platform_device_id db1200_pids[] = {
25         {
26                 .name           = "db1200-ac97",
27                 .driver_data    = 0,
28         }, {
29                 .name           = "db1200-i2s",
30                 .driver_data    = 1,
31         },
32         {},
33 };
34
35 /*-------------------------  AC97 PART  ---------------------------*/
36
37 static struct snd_soc_dai_link db1200_ac97_dai = {
38         .name           = "AC97",
39         .stream_name    = "AC97 HiFi",
40         .codec_dai_name = "ac97-hifi",
41         .cpu_dai_name   = "au1xpsc_ac97.1",
42         .platform_name  = "au1xpsc-pcm.1",
43         .codec_name     = "ac97-codec.1",
44 };
45
46 static struct snd_soc_card db1200_ac97_machine = {
47         .name           = "DB1200_AC97",
48         .owner          = THIS_MODULE,
49         .dai_link       = &db1200_ac97_dai,
50         .num_links      = 1,
51 };
52
53 /*-------------------------  I2S PART  ---------------------------*/
54
55 static int db1200_i2s_startup(struct snd_pcm_substream *substream)
56 {
57         struct snd_soc_pcm_runtime *rtd = substream->private_data;
58         struct snd_soc_dai *codec_dai = rtd->codec_dai;
59         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
60         int ret;
61
62         /* WM8731 has its own 12MHz crystal */
63         snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
64                                 12000000, SND_SOC_CLOCK_IN);
65
66         /* codec is bitclock and lrclk master */
67         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
68                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
69         if (ret < 0)
70                 goto out;
71
72         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
73                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
74         if (ret < 0)
75                 goto out;
76
77         ret = 0;
78 out:
79         return ret;
80 }
81
82 static struct snd_soc_ops db1200_i2s_wm8731_ops = {
83         .startup        = db1200_i2s_startup,
84 };
85
86 static struct snd_soc_dai_link db1200_i2s_dai = {
87         .name           = "WM8731",
88         .stream_name    = "WM8731 PCM",
89         .codec_dai_name = "wm8731-hifi",
90         .cpu_dai_name   = "au1xpsc_i2s.1",
91         .platform_name  = "au1xpsc-pcm.1",
92         .codec_name     = "wm8731.0-001b",
93         .ops            = &db1200_i2s_wm8731_ops,
94 };
95
96 static struct snd_soc_card db1200_i2s_machine = {
97         .name           = "DB1200_I2S",
98         .owner          = THIS_MODULE,
99         .dai_link       = &db1200_i2s_dai,
100         .num_links      = 1,
101 };
102
103 /*-------------------------  COMMON PART  ---------------------------*/
104
105 static struct snd_soc_card *db1200_cards[] __devinitdata = {
106         &db1200_ac97_machine,
107         &db1200_i2s_machine,
108 };
109
110 static int __devinit db1200_audio_probe(struct platform_device *pdev)
111 {
112         const struct platform_device_id *pid = platform_get_device_id(pdev);
113         struct snd_soc_card *card;
114
115         card = db1200_cards[pid->driver_data];
116         card->dev = &pdev->dev;
117         return snd_soc_register_card(card);
118 }
119
120 static int __devexit db1200_audio_remove(struct platform_device *pdev)
121 {
122         struct snd_soc_card *card = platform_get_drvdata(pdev);
123         snd_soc_unregister_card(card);
124         return 0;
125 }
126
127 static struct platform_driver db1200_audio_driver = {
128         .driver = {
129                 .name   = "db1200-ac97",
130                 .owner  = THIS_MODULE,
131                 .pm     = &snd_soc_pm_ops,
132         },
133         .id_table       = db1200_pids,
134         .probe          = db1200_audio_probe,
135         .remove         = __devexit_p(db1200_audio_remove),
136 };
137
138 module_platform_driver(db1200_audio_driver);
139
140 MODULE_LICENSE("GPL");
141 MODULE_DESCRIPTION("DB1200 ASoC audio support");
142 MODULE_AUTHOR("Manuel Lauss");