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/*
* FIXME: this is a blueprint for the GTM601 Voice PCM interface
* needs to be adapted for GTA04
* CHECKME: can we use the generic AC97 or SPDIF driver instead of defining our own?
*
* gtm601.c
*
* Created on: 15-Oct-2009
* Author: neil.jones@imgtec.com
*
* Copyright (C) 2009 Imagination Technologies Ltd.
*
* 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/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include "gtm601.h"
/*
* Note this is a simple chip with no configuration interface, sample rate is
* determined automatically by examining the Master clock and Bit clock ratios
*/
#define GTM601_RATES (SNDRV_PCM_RATE_8000) // CHECKME
struct snd_soc_dai_driver gtm601_dai = {
.name = "GTM601",
.playback = {
.stream_name = "Playback",
.channels_min = 1, // CHECKME
.channels_max = 1,
.rates = GTM601_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE, /* this is the only format the omap-mcbsp-dai understands */
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 1,
.rates = GTM601_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
};
EXPORT_SYMBOL_GPL(gtm601_dai);
static int gtm601_soc_probe(struct snd_soc_codec *codec)
{
int ret = 0;
/* register pcms */
ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
if (ret < 0)
printk(KERN_ERR "gtm601: failed to create pcms\n");
return ret;
}
static int gtm601_soc_remove(struct snd_soc_codec *codec)
{
if (codec == NULL)
return 0;
snd_soc_free_ac97_codec(codec);
return 0;
}
struct snd_soc_codec_driver soc_codec_dev_gtm601 = {
.probe = gtm601_soc_probe,
.remove = gtm601_soc_remove,
// .reg_cache_size = ARRAY_SIZE(ad1980_reg),
// .reg_word_size = sizeof(u16),
// .reg_cache_step = 2,
// .write = ac97_write,
// .read = ac97_read,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_gtm601);
static __devinit int gtm601_platform_probe(struct platform_device *pdev)
{
// gtm601_dai.dev = &pdev->dev;
// return snd_soc_register_dai(>m601_dai);
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_gtm601, >m601_dai, 1);
}
static int __devexit gtm601_platform_remove(struct platform_device *pdev)
{
// snd_soc_unregister_dai(>m601_dai);
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
MODULE_ALIAS("platform:gtm601_codec_audio");
static struct platform_driver gtm601_codec_driver = {
.driver = {
.name = "gtm601_codec_audio",
.owner = THIS_MODULE,
},
.probe = gtm601_platform_probe,
.remove = __devexit_p(gtm601_platform_remove),
};
static int __init gtm601_init(void)
{
return platform_driver_register(>m601_codec_driver);
}
module_init(gtm601_init);
static void __exit gtm601_exit(void)
{
platform_driver_unregister(>m601_codec_driver);
}
module_exit(gtm601_exit);
MODULE_DESCRIPTION("ASoC GTM601 driver");
MODULE_AUTHOR("Neil Jones");
MODULE_LICENSE("GPL");
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