sound/soc/nuc900/nuc900-audio.c

   1 /*
   2  * Copyright (c) 2010 Nuvoton technology corporation.
   3  *
   4  * Wan ZongShun <mcuos.com@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation;version 2 of the License.
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/timer.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/platform_device.h>
  17
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/soc.h>
  21
  22 #include "nuc900-audio.h"
  23
  24 static struct snd_soc_dai_link nuc900evb_ac97_dai = {
  25         .name           = "AC97",
  26         .stream_name    = "AC97 HiFi",
  27         .cpu_dai_name   = "nuc900-ac97",
  28         .codec_dai_name = "ac97-hifi",
  29         .codec_name     = "ac97-codec",
  30         .platform_name  = "nuc900-pcm-audio",
  31 };
  32
  33 static struct snd_soc_card nuc900evb_audio_machine = {
  34         .name           = "NUC900EVB_AC97",
  35         .owner          = THIS_MODULE,
  36         .dai_link       = &nuc900evb_ac97_dai,
  37         .num_links      = 1,
  38 };
  39
  40 static struct platform_device *nuc900evb_asoc_dev;
  41
  42 static int __init nuc900evb_audio_init(void)
  43 {
  44         int ret;
  45
  46         ret = -ENOMEM;
  47         nuc900evb_asoc_dev = platform_device_alloc("soc-audio", -1);
  48         if (!nuc900evb_asoc_dev)
  49                 goto out;
  50
  51         /* nuc900 board audio device */
  52         platform_set_drvdata(nuc900evb_asoc_dev, &nuc900evb_audio_machine);
  53
  54         ret = platform_device_add(nuc900evb_asoc_dev);
  55
  56         if (ret) {
  57                 platform_device_put(nuc900evb_asoc_dev);
  58                 nuc900evb_asoc_dev = NULL;
  59         }
  60
  61 out:
  62         return ret;
  63 }
  64
  65 static void __exit nuc900evb_audio_exit(void)
  66 {
  67         platform_device_unregister(nuc900evb_asoc_dev);
  68 }
  69
  70 module_init(nuc900evb_audio_init);
  71 module_exit(nuc900evb_audio_exit);
  72
  73 MODULE_LICENSE("GPL");
  74 MODULE_DESCRIPTION("NUC900 Series ASoC audio support");
  75 MODULE_AUTHOR("Wan ZongShun");