2 * DB1200 ASoC audio fabric support code.
4 * (c) 2008-9 Manuel Lauss <manuel.lauss@gmail.com>
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 <sound/soc-dapm.h>
17 #include <asm/mach-au1x00/au1000.h>
18 #include <asm/mach-au1x00/au1xxx_psc.h>
19 #include <asm/mach-au1x00/au1xxx_dbdma.h>
20 #include <asm/mach-db1x00/bcsr.h>
22 #include "../codecs/ac97.h"
23 #include "../codecs/wm8731.h"
26 /*------------------------- AC97 PART ---------------------------*/
28 static struct snd_soc_dai_link db1200_ac97_dai
= {
30 .stream_name
= "AC97 HiFi",
31 .cpu_dai
= &au1xpsc_ac97_dai
,
32 .codec_dai
= &ac97_dai
,
35 static struct snd_soc_card db1200_ac97_machine
= {
36 .name
= "DB1200_AC97",
37 .dai_link
= &db1200_ac97_dai
,
39 .platform
= &au1xpsc_soc_platform
,
42 static struct snd_soc_device db1200_ac97_devdata
= {
43 .card
= &db1200_ac97_machine
,
44 .codec_dev
= &soc_codec_dev_ac97
,
47 /*------------------------- I2S PART ---------------------------*/
49 static int db1200_i2s_startup(struct snd_pcm_substream
*substream
)
51 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
52 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
53 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
56 /* WM8731 has its own 12MHz crystal */
57 snd_soc_dai_set_sysclk(codec_dai
, WM8731_SYSCLK
,
58 12000000, SND_SOC_CLOCK_IN
);
60 /* codec is bitclock and lrclk master */
61 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_LEFT_J
|
62 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM
);
66 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_LEFT_J
|
67 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM
);
76 static struct snd_soc_ops db1200_i2s_wm8731_ops
= {
77 .startup
= db1200_i2s_startup
,
80 static struct snd_soc_dai_link db1200_i2s_dai
= {
82 .stream_name
= "WM8731 PCM",
83 .cpu_dai
= &au1xpsc_i2s_dai
,
84 .codec_dai
= &wm8731_dai
,
85 .ops
= &db1200_i2s_wm8731_ops
,
88 static struct snd_soc_card db1200_i2s_machine
= {
90 .dai_link
= &db1200_i2s_dai
,
92 .platform
= &au1xpsc_soc_platform
,
95 static struct snd_soc_device db1200_i2s_devdata
= {
96 .card
= &db1200_i2s_machine
,
97 .codec_dev
= &soc_codec_dev_wm8731
,
100 /*------------------------- COMMON PART ---------------------------*/
102 static struct platform_device
*db1200_asoc_dev
;
104 static int __init
db1200_audio_load(void)
109 db1200_asoc_dev
= platform_device_alloc("soc-audio", -1);
110 if (!db1200_asoc_dev
)
113 /* DB1200 board setup set PSC1MUX to preferred audio device */
114 if (bcsr_read(BCSR_RESETS
) & BCSR_RESETS_PSC1MUX
)
115 platform_set_drvdata(db1200_asoc_dev
, &db1200_i2s_devdata
);
117 platform_set_drvdata(db1200_asoc_dev
, &db1200_ac97_devdata
);
119 db1200_ac97_devdata
.dev
= &db1200_asoc_dev
->dev
;
120 db1200_i2s_devdata
.dev
= &db1200_asoc_dev
->dev
;
121 ret
= platform_device_add(db1200_asoc_dev
);
124 platform_device_put(db1200_asoc_dev
);
125 db1200_asoc_dev
= NULL
;
131 static void __exit
db1200_audio_unload(void)
133 platform_device_unregister(db1200_asoc_dev
);
136 module_init(db1200_audio_load
);
137 module_exit(db1200_audio_unload
);
139 MODULE_LICENSE("GPL");
140 MODULE_DESCRIPTION("DB1200 ASoC audio support");
141 MODULE_AUTHOR("Manuel Lauss");