a195b51bc5
This patch adds the ASoC side of the board support for the Crossbow IMB400 daughter board. Thanks to Crossbow for considerable assistance. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
115 lines
2.5 KiB
C
115 lines
2.5 KiB
C
|
|
#include <linux/module.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
|
|
#include "../codecs/wm8940.h"
|
|
#include "pxa2xx-i2s.h"
|
|
#include "pxa2xx-pcm.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->dai->codec_dai;
|
|
struct snd_soc_dai *cpu_dai = rtd->dai->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;
|
|
}
|
|
|
|
/* set codec DAI configuration */
|
|
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
|
|
| SND_SOC_DAIFMT_NB_NF
|
|
| SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* CPU should be clock master */
|
|
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
|
|
| SND_SOC_DAIFMT_NB_NF
|
|
| SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
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 = &pxa_i2s_dai,
|
|
.codec_dai = &wm8940_dai,
|
|
.ops = &imote2_asoc_ops,
|
|
};
|
|
|
|
static struct snd_soc_card snd_soc_imote2 = {
|
|
.name = "Imote2",
|
|
.platform = &pxa2xx_soc_platform,
|
|
.dai_link = &imote2_dai,
|
|
.num_links = 1,
|
|
};
|
|
|
|
static struct snd_soc_device imote2_snd_devdata = {
|
|
.card = &snd_soc_imote2,
|
|
.codec_dev = &soc_codec_dev_wm8940,
|
|
};
|
|
|
|
static struct platform_device *imote2_snd_device;
|
|
|
|
static int __init imote2_asoc_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_intelmote2())
|
|
return -ENODEV;
|
|
imote2_snd_device = platform_device_alloc("soc-audio", -1);
|
|
if (!imote2_snd_device)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(imote2_snd_device, &imote2_snd_devdata);
|
|
imote2_snd_devdata.dev = &imote2_snd_device->dev;
|
|
ret = platform_device_add(imote2_snd_device);
|
|
if (ret)
|
|
platform_device_put(imote2_snd_device);
|
|
|
|
return ret;
|
|
}
|
|
module_init(imote2_asoc_init);
|
|
|
|
static void __exit imote2_asoc_exit(void)
|
|
{
|
|
platform_device_unregister(imote2_snd_device);
|
|
}
|
|
module_exit(imote2_asoc_exit);
|
|
|
|
MODULE_AUTHOR("Jonathan Cameron");
|
|
MODULE_DESCRIPTION("ALSA SoC Imote 2");
|
|
MODULE_LICENSE("GPL");
|