89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/*
|
|
* 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",
|
|
},
|
|
|
|
.probe = wm8727_probe,
|
|
.remove = wm8727_remove,
|
|
};
|
|
|
|
module_platform_driver(wm8727_codec_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC wm8727 driver");
|
|
MODULE_AUTHOR("Neil Jones");
|
|
MODULE_LICENSE("GPL");
|