205d231bfb
While it is a generic serial port in practice the i.MX SSI is only supported in Linux as an audio port (the i.MX has dedicated SPI controllers and so on). This means we don't need to disambiguate against other uses of the hardware and so can drop the -dai suffix from the driver name which fixes merge issues with the i.MX tree in -next. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
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 <sound/soc-dapm.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->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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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 = "tlv320aic23-hifi",
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.platform_name = "imx-pcm-audio.0",
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.codec_name = "tlv320aic23-codec.0-001a",
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.cpu_dai = "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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/* 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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