/*
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* ALSA SoC SPDIF DIT driver
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*
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* This driver is used by controllers which can operate in DIT (SPDI/F) where
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* no codec is needed. This file provides stub codec that can be used
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* in these configurations. TI DaVinci Audio controller uses this driver.
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*
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* Author: Steve Chen, <schen@mvista.com>
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* Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com>
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* Copyright: (C) 2009 Texas Instruments, India
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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/slab.h>
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#include <sound/soc.h>
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#include <sound/pcm.h>
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#include <sound/initval.h>
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#define DRV_NAME "spdif-utils"
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#define STUB_RATES (SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT)
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#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S20_3LE | \
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SNDRV_PCM_FMTBIT_S24_LE | \
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SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
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static struct snd_soc_codec_driver soc_codec_spdif_utils;
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static struct snd_soc_dai_driver spdif_stub_dai = {
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.name = "spdif-hifi",
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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 = 384,
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.rates = STUB_RATES,
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.formats = STUB_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 = 384,
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.rates = STUB_RATES,
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.formats = STUB_FORMATS,
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},
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};
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static int spdif_utils_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev, &soc_codec_spdif_utils,
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&spdif_stub_dai, 1);
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}
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static int spdif_utils_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 spdif_utils_driver = {
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.probe = spdif_utils_probe,
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.remove = spdif_utils_remove,
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.driver = {
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.name = DRV_NAME,
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.owner = THIS_MODULE,
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},
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};
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module_platform_driver(spdif_utils_driver);
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MODULE_AUTHOR("Steve Chen <schen@mvista.com>");
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MODULE_DESCRIPTION("SPDIF dummy codec driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:" DRV_NAME);
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