kirkwood-openrd.c
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/*
* kirkwood-openrd.c
*
* (c) 2010 Arnaud Patard <apatard@mandriva.com>
* (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <mach/kirkwood.h>
#include <plat/audio.h>
#include <asm/mach-types.h>
#include "../codecs/cs42l51.h"
static int openrd_client_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;
unsigned int freq;
switch (params_rate(params)) {
default:
case 44100:
freq = 11289600;
break;
case 48000:
freq = 12288000;
break;
case 96000:
freq = 24576000;
break;
}
return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
}
static struct snd_soc_ops openrd_client_ops = {
.hw_params = openrd_client_hw_params,
};
static struct snd_soc_dai_link openrd_client_dai[] = {
{
.name = "CS42L51",
.stream_name = "CS42L51 HiFi",
.cpu_dai_name = "kirkwood-i2s",
.platform_name = "kirkwood-pcm-audio",
.codec_dai_name = "cs42l51-hifi",
.codec_name = "cs42l51-codec.0-004a",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
.ops = &openrd_client_ops,
},
};
static struct snd_soc_card openrd_client = {
.name = "OpenRD Client",
.owner = THIS_MODULE,
.dai_link = openrd_client_dai,
.num_links = ARRAY_SIZE(openrd_client_dai),
};
static struct platform_device *openrd_client_snd_device;
static int __init openrd_client_init(void)
{
int ret;
if (!machine_is_openrd_client() && !machine_is_openrd_ultimate())
return 0;
openrd_client_snd_device = platform_device_alloc("soc-audio", -1);
if (!openrd_client_snd_device)
return -ENOMEM;
platform_set_drvdata(openrd_client_snd_device,
&openrd_client);
ret = platform_device_add(openrd_client_snd_device);
if (ret) {
printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
platform_device_put(openrd_client_snd_device);
}
return ret;
}
static void __exit openrd_client_exit(void)
{
platform_device_unregister(openrd_client_snd_device);
}
module_init(openrd_client_init);
module_exit(openrd_client_exit);
/* Module information */
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("ALSA SoC OpenRD Client");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:soc-audio");