snappercl15.c
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/*
* snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
*
* Copyright (C) 2008 Bluewater Systems Ltd
* Author: Ryan Mallon
*
* 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/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include "../codecs/tlv320aic23.h"
#define CODEC_CLOCK 5644800
static int snappercl15_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 err;
err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
SND_SOC_CLOCK_IN);
if (err)
return err;
err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
SND_SOC_CLOCK_OUT);
if (err)
return err;
return 0;
}
static struct snd_soc_ops snappercl15_ops = {
.hw_params = snappercl15_hw_params,
};
static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Headphone Jack", NULL, "LHPOUT"},
{"Headphone Jack", NULL, "RHPOUT"},
{"LLINEIN", NULL, "Line In"},
{"RLINEIN", NULL, "Line In"},
{"MICIN", NULL, "Mic Jack"},
};
static int snappercl15_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
ARRAY_SIZE(tlv320aic23_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
static struct snd_soc_dai_link snappercl15_dai = {
.name = "tlv320aic23",
.stream_name = "AIC23",
.cpu_dai_name = "ep93xx-i2s",
.codec_dai_name = "tlv320aic23-hifi",
.codec_name = "tlv320aic23-codec.0-001a",
.platform_name = "ep93xx-i2s",
.init = snappercl15_tlv320aic23_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &snappercl15_ops,
};
static struct snd_soc_card snd_soc_snappercl15 = {
.name = "Snapper CL15",
.owner = THIS_MODULE,
.dai_link = &snappercl15_dai,
.num_links = 1,
};
static int snappercl15_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &snd_soc_snappercl15;
int ret;
ret = ep93xx_i2s_acquire();
if (ret)
return ret;
card->dev = &pdev->dev;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
ep93xx_i2s_release();
}
return ret;
}
static int snappercl15_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
ep93xx_i2s_release();
return 0;
}
static struct platform_driver snappercl15_driver = {
.driver = {
.name = "snappercl15-audio",
.owner = THIS_MODULE,
},
.probe = snappercl15_probe,
.remove = snappercl15_remove,
};
module_platform_driver(snappercl15_driver);
MODULE_AUTHOR("Ryan Mallon");
MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:snappercl15-audio");