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/wm8731.h"
25 /*------------------------- AC97 PART ---------------------------*/
27 static struct snd_soc_dai_link db1200_ac97_dai
= {
29 .stream_name
= "AC97 HiFi",
30 .codec_dai_name
= "ac97-hifi",
31 .cpu_dai_name
= "au1xpsc_ac97.1",
32 .platform_name
= "au1xpsc-pcm.1",
33 .codec_name
= "ac97-codec.1",
36 static struct snd_soc_card db1200_ac97_machine
= {
37 .name
= "DB1200_AC97",
38 .dai_link
= &db1200_ac97_dai
,
42 /*------------------------- I2S PART ---------------------------*/
44 static int db1200_i2s_startup(struct snd_pcm_substream
*substream
)
46 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
47 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
48 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
51 /* WM8731 has its own 12MHz crystal */
52 snd_soc_dai_set_sysclk(codec_dai
, WM8731_SYSCLK_XTAL
,
53 12000000, SND_SOC_CLOCK_IN
);
55 /* codec is bitclock and lrclk master */
56 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_LEFT_J
|
57 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM
);
61 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_LEFT_J
|
62 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM
);
71 static struct snd_soc_ops db1200_i2s_wm8731_ops
= {
72 .startup
= db1200_i2s_startup
,
75 static struct snd_soc_dai_link db1200_i2s_dai
= {
77 .stream_name
= "WM8731 PCM",
78 .codec_dai_name
= "wm8731-hifi",
79 .cpu_dai_name
= "au1xpsc_i2s.1",
80 .platform_name
= "au1xpsc-pcm.1",
81 .codec_name
= "wm8731-codec.0-001b",
82 .ops
= &db1200_i2s_wm8731_ops
,
85 static struct snd_soc_card db1200_i2s_machine
= {
87 .dai_link
= &db1200_i2s_dai
,
91 /*------------------------- COMMON PART ---------------------------*/
93 static struct platform_device
*db1200_asoc_dev
;
95 static int __init
db1200_audio_load(void)
100 db1200_asoc_dev
= platform_device_alloc("soc-audio", 1); /* PSC1 */
101 if (!db1200_asoc_dev
)
104 /* DB1200 board setup set PSC1MUX to preferred audio device */
105 if (bcsr_read(BCSR_RESETS
) & BCSR_RESETS_PSC1MUX
)
106 platform_set_drvdata(db1200_asoc_dev
, &db1200_i2s_machine
);
108 platform_set_drvdata(db1200_asoc_dev
, &db1200_ac97_machine
);
110 ret
= platform_device_add(db1200_asoc_dev
);
113 platform_device_put(db1200_asoc_dev
);
114 db1200_asoc_dev
= NULL
;
120 static void __exit
db1200_audio_unload(void)
122 platform_device_unregister(db1200_asoc_dev
);
125 module_init(db1200_audio_load
);
126 module_exit(db1200_audio_unload
);
128 MODULE_LICENSE("GPL");
129 MODULE_DESCRIPTION("DB1200 ASoC audio support");
130 MODULE_AUTHOR("Manuel Lauss");