wm8727.c
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/*
* wm8727.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>
static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
};
static const struct snd_soc_dapm_route wm8727_dapm_routes[] = {
{ "VOUTL", NULL, "Playback" },
{ "VOUTR", NULL, "Playback" },
};
/*
* 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 WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_192000)
static struct snd_soc_dai_driver wm8727_dai = {
.name = "wm8727-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = WM8727_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
};
static struct snd_soc_codec_driver soc_codec_dev_wm8727 = {
.dapm_widgets = wm8727_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets),
.dapm_routes = wm8727_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes),
};
static int wm8727_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_wm8727, &wm8727_dai, 1);
}
static int wm8727_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver wm8727_codec_driver = {
.driver = {
.name = "wm8727",
.owner = THIS_MODULE,
},
.probe = wm8727_probe,
.remove = wm8727_remove,
};
module_platform_driver(wm8727_codec_driver);
MODULE_DESCRIPTION("ASoC wm8727 driver");
MODULE_AUTHOR("Neil Jones");
MODULE_LICENSE("GPL");