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/*
* eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
*
* Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
*
* based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
* which is Copyright 2009 Simtec Electronics
* and on sound/soc/imx/phycore-ac97.c which is
* Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include "../codecs/tlv320aic23.h"
#include "imx-ssi.h"
#include "imx-audmux.h"
#define CODEC_CLOCK 12000000
static int eukrea_tlv320_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret;
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret) {
pr_err("%s: failed set cpu dai format\n", __func__);
return ret;
}
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret) {
pr_err("%s: failed set codec dai format\n", __func__);
return ret;
}
ret = snd_soc_dai_set_sysclk(codec_dai, 0,
CODEC_CLOCK, SND_SOC_CLOCK_OUT);
if (ret) {
pr_err("%s: failed setting codec sysclk\n", __func__);
return ret;
}
snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
SND_SOC_CLOCK_IN);
if (ret) {
pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
return ret;
}
return 0;
}
static struct snd_soc_ops eukrea_tlv320_snd_ops = {
.hw_params = eukrea_tlv320_hw_params,
};
static struct snd_soc_dai_link eukrea_tlv320_dai = {
.name = "tlv320aic23",
.stream_name = "TLV320AIC23",
.codec_dai_name = "tlv320aic23-hifi",
.platform_name = "imx-fiq-pcm-audio.0",
.codec_name = "tlv320aic23-codec.0-001a",
.cpu_dai_name = "imx-ssi.0",
.ops = &eukrea_tlv320_snd_ops,
};
static struct snd_soc_card eukrea_tlv320 = {
.name = "cpuimx-audio",
.owner = THIS_MODULE,
.dai_link = &eukrea_tlv320_dai,
.num_links = 1,
};
static int __devinit eukrea_tlv320_probe(struct platform_device *pdev)
{
int ret;
int int_port = 0, ext_port;
if (machine_is_eukrea_cpuimx27()) {
imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
IMX_AUDMUX_V1_PCR_SYN |
IMX_AUDMUX_V1_PCR_TFSDIR |
IMX_AUDMUX_V1_PCR_TCLKDIR |
IMX_AUDMUX_V1_PCR_RFSDIR |
IMX_AUDMUX_V1_PCR_RCLKDIR |
IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
);
imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
IMX_AUDMUX_V1_PCR_SYN |
IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
);
} else if (machine_is_eukrea_cpuimx25sd() ||
machine_is_eukrea_cpuimx35sd() ||
machine_is_eukrea_cpuimx51sd()) {
ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3;
imx_audmux_v2_configure_port(int_port,
IMX_AUDMUX_V2_PTCR_SYN |
IMX_AUDMUX_V2_PTCR_TFSDIR |
IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
IMX_AUDMUX_V2_PTCR_TCLKDIR |
IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
);
imx_audmux_v2_configure_port(ext_port,
IMX_AUDMUX_V2_PTCR_SYN,
IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
);
} else {
/* return happy. We might run on a totally different machine */
return 0;
}
eukrea_tlv320.dev = &pdev->dev;
ret = snd_soc_register_card(&eukrea_tlv320);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
return ret;
}
static int __devexit eukrea_tlv320_remove(struct platform_device *pdev)
{
snd_soc_unregister_card(&eukrea_tlv320);
return 0;
}
static struct platform_driver eukrea_tlv320_driver = {
.driver = {
.name = "eukrea_tlv320",
.owner = THIS_MODULE,
},
.probe = eukrea_tlv320_probe,
.remove = __devexit_p(eukrea_tlv320_remove),};
module_platform_driver(eukrea_tlv320_driver);
MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:eukrea_tlv320");
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