132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*
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* eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
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*
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* Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
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*
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* based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
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* which is Copyright 2009 Simtec Electronics
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* and on sound/soc/imx/phycore-ac97.c which is
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* Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
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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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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <asm/mach-types.h>
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#include "../codecs/tlv320aic23.h"
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#include "imx-ssi.h"
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#define CODEC_CLOCK 12000000
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static int eukrea_tlv320_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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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret) {
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pr_err("%s: failed set cpu dai format\n", __func__);
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return ret;
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}
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret) {
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pr_err("%s: failed set codec dai format\n", __func__);
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(codec_dai, 0,
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CODEC_CLOCK, SND_SOC_CLOCK_OUT);
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if (ret) {
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pr_err("%s: failed setting codec sysclk\n", __func__);
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return ret;
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}
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snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
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ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
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SND_SOC_CLOCK_IN);
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if (ret) {
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pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
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return ret;
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}
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return 0;
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}
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static struct snd_soc_ops eukrea_tlv320_snd_ops = {
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.hw_params = eukrea_tlv320_hw_params,
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};
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static struct snd_soc_dai_link eukrea_tlv320_dai = {
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.name = "tlv320aic23",
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.stream_name = "TLV320AIC23",
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.codec_dai_name = "tlv320aic23-hifi",
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.platform_name = "imx-fiq-pcm-audio.0",
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.codec_name = "tlv320aic23-codec.0-001a",
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.cpu_dai_name = "imx-ssi.0",
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.ops = &eukrea_tlv320_snd_ops,
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};
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static struct snd_soc_card eukrea_tlv320 = {
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.name = "cpuimx-audio",
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.dai_link = &eukrea_tlv320_dai,
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.num_links = 1,
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};
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static struct platform_device *eukrea_tlv320_snd_device;
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static int __init eukrea_tlv320_init(void)
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{
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int ret;
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if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd()
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&& !machine_is_eukrea_cpuimx35sd()
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&& !machine_is_eukrea_cpuimx51sd())
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/* return happy. We might run on a totally different machine */
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return 0;
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eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1);
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if (!eukrea_tlv320_snd_device)
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return -ENOMEM;
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platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320);
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ret = platform_device_add(eukrea_tlv320_snd_device);
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if (ret) {
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printk(KERN_ERR "ASoC: Platform device allocation failed\n");
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platform_device_put(eukrea_tlv320_snd_device);
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}
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return ret;
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}
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static void __exit eukrea_tlv320_exit(void)
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{
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platform_device_unregister(eukrea_tlv320_snd_device);
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}
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module_init(eukrea_tlv320_init);
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module_exit(eukrea_tlv320_exit);
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MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
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MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
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MODULE_LICENSE("GPL");
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