forked from luck/tmp_suning_uos_patched
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>
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/*
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* ad73311.c -- ALSA Soc AD73311 codec support
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*
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* Copyright: Analog Device Inc.
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* Author: Cliff Cai <cliff.cai@analog.com>
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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 "ad73311.h"
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struct snd_soc_dai ad73311_dai = {
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.name = "AD73311",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 1,
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.rates = SNDRV_PCM_RATE_8000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE, },
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.channels_max = 1,
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.rates = SNDRV_PCM_RATE_8000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE, },
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};
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EXPORT_SYMBOL_GPL(ad73311_dai);
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static int ad73311_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 = "AD73311";
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codec->owner = THIS_MODULE;
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codec->dai = &ad73311_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 "ad73311: 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 ad73311_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_ad73311 = {
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.probe = ad73311_soc_probe,
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.remove = ad73311_soc_remove,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_ad73311);
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static int __init ad73311_init(void)
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{
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return snd_soc_register_dai(&ad73311_dai);
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}
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module_init(ad73311_init);
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static void __exit ad73311_exit(void)
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{
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snd_soc_unregister_dai(&ad73311_dai);
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}
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module_exit(ad73311_exit);
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MODULE_DESCRIPTION("ASoC ad73311 driver");
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MODULE_AUTHOR("Cliff Cai ");
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MODULE_LICENSE("GPL");
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