116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
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/*
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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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ret = snd_soc_init_card(socdev);
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if (ret < 0) {
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printk(KERN_ERR "ad73311: failed to register card\n");
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goto register_err;
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}
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return ret;
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register_err:
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snd_soc_free_pcms(socdev);
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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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