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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fe3e78e073
snd_soc_init_card() is always called as the last part of the CODEC probe function so we can factor it out into the core card setup rather than have each CODEC replicate the code to do the initialiastation. This will be required to support multiple CODECs per card. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
136 lines
3.2 KiB
C
136 lines
3.2 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/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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#include "wm8727.h"
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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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struct snd_soc_dai wm8727_dai = {
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.name = "WM8727",
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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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EXPORT_SYMBOL_GPL(wm8727_dai);
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static int wm8727_soc_probe(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec;
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int ret = 0;
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codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
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if (codec == NULL)
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return -ENOMEM;
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mutex_init(&codec->mutex);
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codec->name = "WM8727";
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codec->owner = THIS_MODULE;
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codec->dai = &wm8727_dai;
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codec->num_dai = 1;
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socdev->card->codec = codec;
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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/* register pcms */
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0) {
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printk(KERN_ERR "wm8727: failed to create pcms\n");
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goto pcm_err;
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}
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return ret;
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pcm_err:
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kfree(socdev->card->codec);
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socdev->card->codec = NULL;
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return ret;
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}
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static int wm8727_soc_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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if (codec == NULL)
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return 0;
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snd_soc_free_pcms(socdev);
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kfree(codec);
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return 0;
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}
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struct snd_soc_codec_device soc_codec_dev_wm8727 = {
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.probe = wm8727_soc_probe,
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.remove = wm8727_soc_remove,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_wm8727);
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static __devinit int wm8727_platform_probe(struct platform_device *pdev)
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{
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wm8727_dai.dev = &pdev->dev;
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return snd_soc_register_dai(&wm8727_dai);
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}
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static int __devexit wm8727_platform_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_dai(&wm8727_dai);
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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-codec",
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.owner = THIS_MODULE,
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},
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.probe = wm8727_platform_probe,
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.remove = __devexit_p(wm8727_platform_remove),
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};
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static int __init wm8727_init(void)
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{
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return platform_driver_register(&wm8727_codec_driver);
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}
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module_init(wm8727_init);
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static void __exit wm8727_exit(void)
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{
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platform_driver_unregister(&wm8727_codec_driver);
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}
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module_exit(wm8727_exit);
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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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