forked from Minki/linux
ASoC: kirkwood: Add audio support to openrd client platforms
This patch is adding support for openrd client platforms. It's using the cs42l51 codec and has one mic and one speaker plugs. Signed-off-by: Arnaud Patard <apatard@mandriva.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -9,3 +9,12 @@ config SND_KIRKWOOD_SOC
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config SND_KIRKWOOD_SOC_I2S
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tristate
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config SND_KIRKWOOD_SOC_OPENRD
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tristate "SoC Audio support for Kirkwood Openrd Client"
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depends on SND_KIRKWOOD_SOC && MACH_OPENRD_CLIENT
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select SND_KIRKWOOD_SOC_I2S
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select SND_SOC_CS42L51
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help
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Say Y if you want to add support for SoC audio on
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Openrd Client.
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@ -4,3 +4,6 @@ snd-soc-kirkwood-i2s-objs := kirkwood-i2s.o
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obj-$(CONFIG_SND_KIRKWOOD_SOC) += snd-soc-kirkwood.o
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obj-$(CONFIG_SND_KIRKWOOD_SOC_I2S) += snd-soc-kirkwood-i2s.o
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snd-soc-openrd-objs := kirkwood-openrd.o
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obj-$(CONFIG_SND_KIRKWOOD_SOC_OPENRD) += snd-soc-openrd.o
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126
sound/soc/kirkwood/kirkwood-openrd.c
Normal file
126
sound/soc/kirkwood/kirkwood-openrd.c
Normal file
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@ -0,0 +1,126 @@
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/*
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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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*
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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 "kirkwood-i2s.h"
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#include "kirkwood-dma.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->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->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 = &kirkwood_i2s_dai,
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.codec_dai = &cs42l51_dai,
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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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.platform = &kirkwood_soc_platform,
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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 snd_soc_device openrd_client_snd_devdata = {
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.card = &openrd_client,
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.codec_dev = &soc_codec_device_cs42l51,
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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())
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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_snd_devdata);
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openrd_client_snd_devdata.dev = &openrd_client_snd_device->dev;
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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 <apatard@mandriva.com>");
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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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