提交 89933dee 编写于 作者: N Neil Jones 提交者: Mark Brown

ASoC: Add support for the WM8727 DAC.

Add support for the Wolfson Microelectronics WM8727 DAC, this is a simple
non-configurable DAC.
Signed-off-by: NNeil Jones <neil.jones@imgtec.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
上级 0f83d639
......@@ -40,6 +40,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_WM8523 if I2C
select SND_SOC_WM8580 if I2C
select SND_SOC_WM8711 if SND_SOC_I2C_AND_SPI
select SND_SOC_WM8727
select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI
select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI
select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI
......@@ -174,6 +175,9 @@ config SND_SOC_WM8580
config SND_SOC_WM8711
tristate
config SND_SOC_WM8727
tristate
config SND_SOC_WM8728
tristate
......
......@@ -27,6 +27,7 @@ snd-soc-wm8510-objs := wm8510.o
snd-soc-wm8523-objs := wm8523.o
snd-soc-wm8580-objs := wm8580.o
snd-soc-wm8711-objs := wm8711.o
snd-soc-wm8727-objs := wm8727.o
snd-soc-wm8728-objs := wm8728.o
snd-soc-wm8731-objs := wm8731.o
snd-soc-wm8750-objs := wm8750.o
......@@ -81,6 +82,7 @@ obj-$(CONFIG_SND_SOC_WM8510) += snd-soc-wm8510.o
obj-$(CONFIG_SND_SOC_WM8523) += snd-soc-wm8523.o
obj-$(CONFIG_SND_SOC_WM8580) += snd-soc-wm8580.o
obj-$(CONFIG_SND_SOC_WM8711) += snd-soc-wm8711.o
obj-$(CONFIG_SND_SOC_WM8727) += snd-soc-wm8727.o
obj-$(CONFIG_SND_SOC_WM8728) += snd-soc-wm8728.o
obj-$(CONFIG_SND_SOC_WM8731) += snd-soc-wm8731.o
obj-$(CONFIG_SND_SOC_WM8750) += snd-soc-wm8750.o
......
/*
* 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/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 "wm8727.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 WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_192000)
struct snd_soc_dai wm8727_dai = {
.name = "WM8727",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = WM8727_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
};
EXPORT_SYMBOL_GPL(wm8727_dai);
static int wm8727_soc_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (codec == NULL)
return -ENOMEM;
mutex_init(&codec->mutex);
codec->name = "WM8727";
codec->owner = THIS_MODULE;
codec->dai = &wm8727_dai;
codec->num_dai = 1;
socdev->card->codec = codec;
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "wm8727: failed to create pcms\n");
goto pcm_err;
}
/* register card */
ret = snd_soc_init_card(socdev);
if (ret < 0) {
printk(KERN_ERR "wm8727: failed to register card\n");
goto register_err;
}
return ret;
register_err:
snd_soc_free_pcms(socdev);
pcm_err:
kfree(socdev->card->codec);
socdev->card->codec = NULL;
return ret;
}
static int wm8727_soc_remove(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
if (codec == NULL)
return 0;
snd_soc_free_pcms(socdev);
kfree(codec);
return 0;
}
struct snd_soc_codec_device soc_codec_dev_wm8727 = {
.probe = wm8727_soc_probe,
.remove = wm8727_soc_remove,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8727);
static __devinit int wm8727_platform_probe(struct platform_device *pdev)
{
wm8727_dai.dev = &pdev->dev;
return snd_soc_register_dai(&wm8727_dai);
}
static int __devexit wm8727_platform_remove(struct platform_device *pdev)
{
snd_soc_unregister_dai(&wm8727_dai);
return 0;
}
struct platform_driver wm8727_codec_driver = {
.driver = {
.name = "wm8727-codec",
.owner = THIS_MODULE,
},
.probe = wm8727_platform_probe,
.remove = __devexit_p(wm8727_platform_remove),
};
static int __init wm8727_init(void)
{
return platform_driver_register(&wm8727_codec_driver);
}
module_init(wm8727_init);
static void __exit wm8727_exit(void)
{
platform_driver_unregister(&wm8727_codec_driver);
}
module_exit(wm8727_exit);
MODULE_DESCRIPTION("ASoC wm8727 driver");
MODULE_AUTHOR("Neil Jones");
MODULE_LICENSE("GPL");
/*
* wm8727.h
*
* 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.
*/
#ifndef WM8727_H_
#define WM8727_H_
extern struct snd_soc_dai wm8727_dai;
extern struct snd_soc_codec_device soc_codec_dev_wm8727;
#endif /* WM8727_H_ */
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