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/*
* DB1200 ASoC audio fabric support code.
*
* (c) 2008-2011 Manuel Lauss <manuel.lauss@googlemail.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 <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/wm8731.h"
#include "psc.h"
static struct platform_device_id db1200_pids[] = {
{
.name = "db1200-ac97",
.driver_data = 0,
}, {
.name = "db1200-i2s",
.driver_data = 1,
},
{},
};
/*------------------------- AC97 PART ---------------------------*/
static struct snd_soc_dai_link db1200_ac97_dai = {
.name = "AC97",
.stream_name = "AC97 HiFi",
.codec_dai_name = "ac97-hifi",
.cpu_dai_name = "au1xpsc_ac97.1",
.platform_name = "au1xpsc-pcm.1",
.codec_name = "ac97-codec.1",
};
static struct snd_soc_card db1200_ac97_machine = {
.name = "DB1200_AC97",
.dai_link = &db1200_ac97_dai,
.num_links = 1,
};
/*------------------------- 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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret;
/* WM8731 has its own 12MHz crystal */
snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
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",
.codec_dai_name = "wm8731-hifi",
.cpu_dai_name = "au1xpsc_i2s.1",
.platform_name = "au1xpsc-pcm.1",
.codec_name = "wm8731.0-001b",
.ops = &db1200_i2s_wm8731_ops,
};
static struct snd_soc_card db1200_i2s_machine = {
.name = "DB1200_I2S",
.dai_link = &db1200_i2s_dai,
.num_links = 1,
};
/*------------------------- COMMON PART ---------------------------*/
static struct snd_soc_card *db1200_cards[] __devinitdata = {
&db1200_ac97_machine,
&db1200_i2s_machine,
};
static int __devinit db1200_audio_probe(struct platform_device *pdev)
{
const struct platform_device_id *pid = platform_get_device_id(pdev);
struct snd_soc_card *card;
card = db1200_cards[pid->driver_data];
card->dev = &pdev->dev;
return snd_soc_register_card(card);
}
static int __devexit db1200_audio_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static struct platform_driver db1200_audio_driver = {
.driver = {
.name = "db1200-ac97",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.id_table = db1200_pids,
.probe = db1200_audio_probe,
.remove = __devexit_p(db1200_audio_remove),
};
static int __init db1200_audio_load(void)
{
return platform_driver_register(&db1200_audio_driver);
}
static void __exit db1200_audio_unload(void)
{
platform_driver_unregister(&db1200_audio_driver);
}
module_init(db1200_audio_load);
module_exit(db1200_audio_unload);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DB1200 ASoC audio support");
MODULE_AUTHOR("Manuel Lauss");
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