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apatard@mandriva.com
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Mark Brown
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May 31, 2010
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/* | ||
* kirkwood-openrd.c | ||
* | ||
* (c) 2010 Arnaud Patard <apatard@mandriva.com> | ||
* | ||
* 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. | ||
*/ | ||
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#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 "kirkwood-i2s.h" | ||
#include "kirkwood-dma.h" | ||
#include "../codecs/cs42l51.h" | ||
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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->dai->codec_dai; | ||
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | ||
int ret; | ||
unsigned int freq, fmt; | ||
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fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS; | ||
ret = snd_soc_dai_set_fmt(cpu_dai, fmt); | ||
if (ret < 0) | ||
return ret; | ||
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ret = snd_soc_dai_set_fmt(codec_dai, fmt); | ||
if (ret < 0) | ||
return ret; | ||
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switch (params_rate(params)) { | ||
default: | ||
case 44100: | ||
freq = 11289600; | ||
break; | ||
case 48000: | ||
freq = 12288000; | ||
break; | ||
case 96000: | ||
freq = 24576000; | ||
break; | ||
} | ||
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return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN); | ||
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} | ||
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static struct snd_soc_ops openrd_client_ops = { | ||
.hw_params = openrd_client_hw_params, | ||
}; | ||
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static struct snd_soc_dai_link openrd_client_dai[] = { | ||
{ | ||
.name = "CS42L51", | ||
.stream_name = "CS42L51 HiFi", | ||
.cpu_dai = &kirkwood_i2s_dai, | ||
.codec_dai = &cs42l51_dai, | ||
.ops = &openrd_client_ops, | ||
}, | ||
}; | ||
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static struct snd_soc_card openrd_client = { | ||
.name = "OpenRD Client", | ||
.platform = &kirkwood_soc_platform, | ||
.dai_link = openrd_client_dai, | ||
.num_links = ARRAY_SIZE(openrd_client_dai), | ||
}; | ||
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static struct snd_soc_device openrd_client_snd_devdata = { | ||
.card = &openrd_client, | ||
.codec_dev = &soc_codec_device_cs42l51, | ||
}; | ||
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static struct platform_device *openrd_client_snd_device; | ||
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static int __init openrd_client_init(void) | ||
{ | ||
int ret; | ||
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if (!machine_is_openrd_client()) | ||
return 0; | ||
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openrd_client_snd_device = platform_device_alloc("soc-audio", -1); | ||
if (!openrd_client_snd_device) | ||
return -ENOMEM; | ||
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platform_set_drvdata(openrd_client_snd_device, | ||
&openrd_client_snd_devdata); | ||
openrd_client_snd_devdata.dev = &openrd_client_snd_device->dev; | ||
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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); | ||
} | ||
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return ret; | ||
} | ||
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static void __exit openrd_client_exit(void) | ||
{ | ||
platform_device_unregister(openrd_client_snd_device); | ||
} | ||
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module_init(openrd_client_init); | ||
module_exit(openrd_client_exit); | ||
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/* Module information */ | ||
MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>"); | ||
MODULE_DESCRIPTION("ALSA SoC OpenRD Client"); | ||
MODULE_LICENSE("GPL"); | ||
MODULE_ALIAS("platform:soc-audio"); |