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/*
* sound/soc/sprd/codec/null-codec/null-codec.c
*
* NULL-CODEC -- SpreadTrum just for codec code.
*
* Copyright (C) 2012 SpreadTrum Ltd.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "sprd-asoc-debug.h"
#define pr_fmt(fmt) pr_sprd_fmt("NULCD") fmt
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/sysfs.h>
#include <linux/stat.h>
#include <linux/of.h>
#include <sound/core.h>
#include <sound/soc.h>
#include "sprd-asoc-common.h"
#include "null-codec.h"
/* PCM Playing and Recording default in full duplex mode */
struct snd_soc_dai_driver null_codec_dai[] = {
{
.name = "null-codec-dai",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
static struct snd_soc_codec_driver soc_codec_dev_null_codec = { 0 };
static int null_codec_codec_probe(struct platform_device *pdev)
{
int ret;
sp_asoc_pr_dbg("%s\n", __func__);
ret = snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_null_codec, null_codec_dai,
ARRAY_SIZE(null_codec_dai));
if (ret != 0) {
pr_err("ERR:Failed to register NULL CODEC: %d\n", ret);
return ret;
}
return 0;
}
static int null_codec_codec_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id codec_of_match[] = {
{.compatible = "sprd,null-codec",},
{},
};
MODULE_DEVICE_TABLE(of, codec_of_match);
#endif
static struct platform_driver null_codec_codec_driver = {
.driver = {
.name = "null-codec",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(codec_of_match),
},
.probe = null_codec_codec_probe,
.remove = null_codec_codec_remove,
};
module_platform_driver(null_codec_codec_driver);
MODULE_DESCRIPTION("NULL-CODEC ALSA SoC codec driver");
MODULE_AUTHOR("Ken Kuang <ken.kuang@spreadtrum.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("codec:null-codec");
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