mirror of https://gitee.com/openkylin/linux.git
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* wm8727.c
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*
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* Created on: 15-Oct-2009
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* Author: neil.jones@imgtec.com
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*
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* Copyright (C) 2009 Imagination Technologies Ltd.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
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SND_SOC_DAPM_OUTPUT("VOUTL"),
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SND_SOC_DAPM_OUTPUT("VOUTR"),
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};
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static const struct snd_soc_dapm_route wm8727_dapm_routes[] = {
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{ "VOUTL", NULL, "Playback" },
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{ "VOUTR", NULL, "Playback" },
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};
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/*
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* Note this is a simple chip with no configuration interface, sample rate is
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* determined automatically by examining the Master clock and Bit clock ratios
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*/
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#define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
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SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
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SNDRV_PCM_RATE_192000)
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static struct snd_soc_dai_driver wm8727_dai = {
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.name = "wm8727-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = WM8727_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
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},
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};
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static struct snd_soc_codec_driver soc_codec_dev_wm8727 = {
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.dapm_widgets = wm8727_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets),
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.dapm_routes = wm8727_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes),
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};
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static int wm8727_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev,
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&soc_codec_dev_wm8727, &wm8727_dai, 1);
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}
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static int wm8727_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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}
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static struct platform_driver wm8727_codec_driver = {
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.driver = {
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.name = "wm8727",
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.owner = THIS_MODULE,
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},
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.probe = wm8727_probe,
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.remove = wm8727_remove,
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};
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module_platform_driver(wm8727_codec_driver);
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MODULE_DESCRIPTION("ASoC wm8727 driver");
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MODULE_AUTHOR("Neil Jones");
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MODULE_LICENSE("GPL");
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