LXR linux/sound/soc/codecs/spdif

   1/*
   2 * ALSA SoC SPDIF DIT driver
   3 *
   4 *  This driver is used by controllers which can operate in DIT (SPDI/F) where
   5 *  no codec is needed.  This file provides stub codec that can be used
   6 *  in these configurations. TI DaVinci Audio controller uses this driver.
   7 *
   8 * Author:      Steve Chen,  <schen@mvista.com>
   9 * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
  10 * Copyright:   (C) 2009  Texas Instruments, India
  11 *
  12 * This program is free software; you can redistribute it and/or modify
  13 * it under the terms of the GNU General Public License version 2 as
  14 * published by the Free Software Foundation.
  15 */
  16
  17#include <linux/module.h>
  18#include <linux/moduleparam.h>
  19#include <sound/soc.h>
  20#include <sound/pcm.h>
  21
  22#include "spdif_transciever.h"
  23
  24MODULE_LICENSE("GPL");
  25
  26#define STUB_RATES      SNDRV_PCM_RATE_8000_96000
  27#define STUB_FORMATS    SNDRV_PCM_FMTBIT_S16_LE
  28
  29struct snd_soc_dai dit_stub_dai = {
  30        .name           = "DIT",
  31        .playback       = {
  32                .stream_name    = "Playback",
  33                .channels_min   = 1,
  34                .channels_max   = 384,
  35                .rates          = STUB_RATES,
  36                .formats        = STUB_FORMATS,
  37        },
  38};
  39EXPORT_SYMBOL_GPL(dit_stub_dai);
  40
  41static int spdif_dit_probe(struct platform_device *pdev)
  42{
  43        dit_stub_dai.dev = &pdev->dev;
  44        return snd_soc_register_dai(&dit_stub_dai);
  45}
  46
  47static int spdif_dit_remove(struct platform_device *pdev)
  48{
  49        snd_soc_unregister_dai(&dit_stub_dai);
  50        return 0;
  51}
  52
  53static struct platform_driver spdif_dit_driver = {
  54        .probe          = spdif_dit_probe,
  55        .remove         = spdif_dit_remove,
  56        .driver         = {
  57                .name   = "spdif-dit",
  58                .owner  = THIS_MODULE,
  59        },
  60};
  61
  62static int __init dit_modinit(void)
  63{
  64        return platform_driver_register(&spdif_dit_driver);
  65}
  66
  67static void __exit dit_exit(void)
  68{
  69        platform_driver_unregister(&spdif_dit_driver);
  70}
  71
  72module_init(dit_modinit);
  73module_exit(dit_exit);
  74
  75