6b13f685e
 김민수
BSP 최초 추가
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#include <linux/module.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include "../codecs/wm8940.h"
#include "pxa2xx-i2s.h"
static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
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;
unsigned int clk = 0;
int ret;
switch (params_rate(params)) {
case 8000:
case 16000:
case 48000:
case 96000:
clk = 12288000;
break;
case 11025:
case 22050:
case 44100:
clk = 11289600;
break;
}
ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set the I2S system clock as input (unused) */
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
SND_SOC_CLOCK_OUT);
return ret;
}
static struct snd_soc_ops imote2_asoc_ops = {
.hw_params = imote2_asoc_hw_params,
};
static struct snd_soc_dai_link imote2_dai = {
.name = "WM8940",
.stream_name = "WM8940",
.cpu_dai_name = "pxa2xx-i2s",
.codec_dai_name = "wm8940-hifi",
.platform_name = "pxa-pcm-audio",
.codec_name = "wm8940-codec.0-0034",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &imote2_asoc_ops,
};
static struct snd_soc_card imote2 = {
.name = "Imote2",
.owner = THIS_MODULE,
.dai_link = &imote2_dai,
.num_links = 1,
};
static int imote2_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &imote2;
int ret;
card->dev = &pdev->dev;
ret = snd_soc_register_card(card);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d
",
ret);
return ret;
}
static int imote2_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 imote2_driver = {
.driver = {
.name = "imote2-audio",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = imote2_probe,
.remove = imote2_remove,
};
module_platform_driver(imote2_driver);
MODULE_AUTHOR("Jonathan Cameron");
MODULE_DESCRIPTION("ALSA SoC Imote 2");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:imote2-audio");
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