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