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spdif_transciever.c

/*
 * ALSA SoC SPDIF DIT driver
 *
 *  This driver is used by controllers which can operate in DIT (SPDI/F) where
 *  no codec is needed.  This file provides stub codec that can be used
 *  in these configurations. TI DaVinci Audio controller uses this driver.
 *
 * Author:      Steve Chen,  <schen@mvista.com>
 * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
 * Copyright:   (C) 2009  Texas Instruments, India
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <sound/soc.h>
#include <sound/pcm.h>

#include "spdif_transciever.h"

MODULE_LICENSE("GPL");

#define STUB_RATES      SNDRV_PCM_RATE_8000_96000
#define STUB_FORMATS    SNDRV_PCM_FMTBIT_S16_LE

struct snd_soc_dai dit_stub_dai = {
      .name       = "DIT",
      .playback   = {
            .stream_name      = "Playback",
            .channels_min     = 1,
            .channels_max     = 384,
            .rates            = STUB_RATES,
            .formats    = STUB_FORMATS,
      },
};
EXPORT_SYMBOL_GPL(dit_stub_dai);

static int spdif_dit_probe(struct platform_device *pdev)
{
      dit_stub_dai.dev = &pdev->dev;
      return snd_soc_register_dai(&dit_stub_dai);
}

static int spdif_dit_remove(struct platform_device *pdev)
{
      snd_soc_unregister_dai(&dit_stub_dai);
      return 0;
}

static struct platform_driver spdif_dit_driver = {
      .probe            = spdif_dit_probe,
      .remove           = spdif_dit_remove,
      .driver           = {
            .name = "spdif-dit",
            .owner      = THIS_MODULE,
      },
};

static int __init dit_modinit(void)
{
      return platform_driver_register(&spdif_dit_driver);
}

static void __exit dit_exit(void)
{
      platform_driver_unregister(&spdif_dit_driver);
}

module_init(dit_modinit);
module_exit(dit_exit);


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