linux_dsm_epyc7002/sound/soc/codecs/wm8727.c
Mark Brown 72a061f763 ASoC: wm8727: Add DAPM support
In order to make the device easier to hook up to external components in
system designs and ensure operation when DAPM support becomes mandatory
add DAPM support.

Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-18 18:39:27 +01:00

90 lines
2.3 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",
.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");