release/src-rt-6.x.4708/linux/linux-2.6.36/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 #include <sound/soc-dapm.h>
  22
  23 #include "../codecs/ac97.h"
  24 #include "nuc900-audio.h"
  25
  26 static struct snd_soc_dai_link nuc900evb_ac97_dai = {
  27         .name           = "AC97",
  28         .stream_name    = "AC97 HiFi",
  29         .cpu_dai        = &nuc900_ac97_dai,
  30         .codec_dai      = &ac97_dai,
  31 };
  32
  33 static struct snd_soc_card nuc900evb_audio_machine = {
  34         .name           = "NUC900EVB_AC97",
  35         .dai_link       = &nuc900evb_ac97_dai,
  36         .num_links      = 1,
  37         .platform       = &nuc900_soc_platform,
  38 };
  39
  40 static struct snd_soc_device nuc900evb_ac97_devdata = {
  41         .card           = &nuc900evb_audio_machine,
  42         .codec_dev      = &soc_codec_dev_ac97,
  43 };
  44
  45 static struct platform_device *nuc900evb_asoc_dev;
  46
  47 static int __init nuc900evb_audio_init(void)
  48 {
  49         int ret;
  50
  51         ret = -ENOMEM;
  52         nuc900evb_asoc_dev = platform_device_alloc("soc-audio", -1);
  53         if (!nuc900evb_asoc_dev)
  54                 goto out;
  55
  56         /* nuc900 board audio device */
  57         platform_set_drvdata(nuc900evb_asoc_dev, &nuc900evb_ac97_devdata);
  58
  59         nuc900evb_ac97_devdata.dev = &nuc900evb_asoc_dev->dev;
  60         ret = platform_device_add(nuc900evb_asoc_dev);
  61
  62         if (ret) {
  63                 platform_device_put(nuc900evb_asoc_dev);
  64                 nuc900evb_asoc_dev = NULL;
  65         }
  66
  67 out:
  68         return ret;
  69 }
  70
  71 static void __exit nuc900evb_audio_exit(void)
  72 {
  73         platform_device_unregister(nuc900evb_asoc_dev);
  74 }
  75
  76 module_init(nuc900evb_audio_init);
  77 module_exit(nuc900evb_audio_exit);
  78
  79 MODULE_LICENSE("GPL");
  80 MODULE_DESCRIPTION("NUC900 Series ASoC audio support");
  81 MODULE_AUTHOR("Wan ZongShun");