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/*
* snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
*
* Copyright (C) 2008 Bluewater Systems Ltd
* Author: Ryan Mallon <ryan@bluewatersys.com>
*
* 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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include "../codecs/tlv320aic23.h"
#include "ep93xx-pcm.h"
#include "ep93xx-i2s.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->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int err;
err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_IF |
SND_SOC_DAIFMT_CBS_CFS);
err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_IF |
SND_SOC_DAIFMT_CBS_CFS);
if (err)
return 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_codec *codec)
{
snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
ARRAY_SIZE(tlv320aic23_dapm_widgets));
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
static struct snd_soc_dai_link snappercl15_dai = {
.name = "tlv320aic23",
.stream_name = "AIC23",
.cpu_dai = &ep93xx_i2s_dai,
.codec_dai = &tlv320aic23_dai,
.init = snappercl15_tlv320aic23_init,
.ops = &snappercl15_ops,
};
static struct snd_soc_card snd_soc_snappercl15 = {
.name = "Snapper CL15",
.platform = &ep93xx_soc_platform,
.dai_link = &snappercl15_dai,
.num_links = 1,
};
static struct snd_soc_device snappercl15_snd_devdata = {
.card = &snd_soc_snappercl15,
.codec_dev = &soc_codec_dev_tlv320aic23,
};
static struct platform_device *snappercl15_snd_device;
static int __init snappercl15_init(void)
{
int ret;
if (!machine_is_snapper_cl15())
return -ENODEV;
ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97,
EP93XX_SYSCON_I2SCLKDIV_ORIDE |
EP93XX_SYSCON_I2SCLKDIV_SPOL);
if (ret)
return ret;
snappercl15_snd_device = platform_device_alloc("soc-audio", -1);
if (!snappercl15_snd_device)
return -ENOMEM;
platform_set_drvdata(snappercl15_snd_device, &snappercl15_snd_devdata);
snappercl15_snd_devdata.dev = &snappercl15_snd_device->dev;
ret = platform_device_add(snappercl15_snd_device);
if (ret)
platform_device_put(snappercl15_snd_device);
return ret;
}
static void __exit snappercl15_exit(void)
{
platform_device_unregister(snappercl15_snd_device);
ep93xx_i2s_release();
}
module_init(snappercl15_init);
module_exit(snappercl15_exit);
MODULE_AUTHOR("Ryan Mallon <ryan@bluewatersys.com>");
MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
MODULE_LICENSE("GPL");
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