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https://github.com/genesi/linux-legacy.git
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be0524d38f
This is i.MX BSP 5.0.0 release ported to 2.6.31 Signed-off-by: Rob Herring <r.herring@freescale.com> Signed-off-by: Alan Tull <r80115@freescale.com> Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
148 lines
3.2 KiB
C
148 lines
3.2 KiB
C
/*
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* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
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*/
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/*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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/*!
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* @file bluetooth.c
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* @brief Driver for bluetooth PCM interface
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*
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* @ingroup Sound
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#define BLUETOOTH_RATES SNDRV_PCM_RATE_8000
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#define BLUETOOTH_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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struct snd_soc_dai bt_dai = {
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.name = "bluetooth",
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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 = 2,
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.rates = BLUETOOTH_RATES,
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.formats = BLUETOOTH_FORMATS,
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},
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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 = 2,
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.rates = BLUETOOTH_RATES,
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.formats = BLUETOOTH_FORMATS,
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},
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};
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EXPORT_SYMBOL_GPL(bt_dai);
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static int bt_init(struct snd_soc_device *socdev)
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{
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struct snd_soc_codec *codec = socdev->card->codec;
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int ret = 0;
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codec->name = "bluetooth";
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codec->owner = THIS_MODULE;
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codec->dai = &bt_dai;
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codec->num_dai = 1;
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snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0) {
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pr_err("failed to create bluetooth pcms\n");
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return ret;
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}
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ret = snd_soc_init_card(socdev);
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strcpy(codec->card->id, "bluetooth");
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if (ret < 0) {
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pr_err("bluetooth: failed to register card\n");
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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return ret;
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}
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return 0;
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}
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static struct snd_soc_device *bt_socdev;
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static int bt_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 = socdev->card->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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socdev->card->codec = codec;
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mutex_init(&codec->mutex);
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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bt_socdev = socdev;
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ret = bt_init(socdev);
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if (ret < 0) {
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pr_err("Bluetooth codec initialisation failed\n");
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kfree(codec);
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}
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return ret;
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}
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/* power down chip */
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static int bt_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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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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kfree(codec);
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return 0;
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}
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static int bt_suspend(struct platform_device *pdev, pm_message_t state)
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{
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return 0;
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}
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static int bt_resume(struct platform_device *pdev)
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{
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return 0;
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}
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struct snd_soc_codec_device soc_codec_dev_bt = {
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.probe = bt_probe,
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.remove = bt_remove,
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.suspend = bt_suspend,
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.resume = bt_resume,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_bt);
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MODULE_DESCRIPTION("ASoC bluetooth codec driver");
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MODULE_AUTHOR("Freescale Semiconductor, Inc.");
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MODULE_LICENSE("GPL");
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