sound/soc/ep93xx/simone.c

   1 /*
   2  * simone.c -- ASoC audio for Simplemachines Sim.One board
   3  *
   4  * Copyright (c) 2010 Mika Westerberg
   5  *
   6  * Based on snappercl15 machine driver by Ryan Mallon.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/module.h>
  15 #include <linux/platform_device.h>
  16
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/soc.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <mach/hardware.h>
  23
  24 #include "ep93xx-pcm.h"
  25
  26 static struct snd_soc_dai_link simone_dai = {
  27         .name           = "AC97",
  28         .stream_name    = "AC97 HiFi",
  29         .cpu_dai_name   = "ep93xx-ac97",
  30         .codec_dai_name = "ac97-hifi",
  31         .codec_name     = "ac97-codec",
  32         .platform_name  = "ep93xx-pcm-audio",
  33 };
  34
  35 static struct snd_soc_card snd_soc_simone = {
  36         .name           = "Sim.One",
  37         .dai_link       = &simone_dai,
  38         .num_links      = 1,
  39 };
  40
  41 static struct platform_device *simone_snd_ac97_device;
  42
  43 static int __devinit simone_probe(struct platform_device *pdev)
  44 {
  45         struct snd_soc_card *card = &snd_soc_simone;
  46         int ret;
  47
  48         simone_snd_ac97_device = platform_device_register_simple("ac97-codec",
  49                                                                  -1, NULL, 0);
  50         if (IS_ERR(simone_snd_ac97_device))
  51                 return PTR_ERR(simone_snd_ac97_device);
  52
  53         card->dev = &pdev->dev;
  54
  55         ret = snd_soc_register_card(card);
  56         if (ret) {
  57                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
  58                         ret);
  59                 platform_device_unregister(simone_snd_ac97_device);
  60         }
  61
  62         return ret;
  63 }
  64
  65 static int __devexit simone_remove(struct platform_device *pdev)
  66 {
  67         struct snd_soc_card *card = platform_get_drvdata(pdev);
  68
  69         snd_soc_unregister_card(card);
  70         platform_device_unregister(simone_snd_ac97_device);
  71
  72         return 0;
  73 }
  74
  75 static struct platform_driver simone_driver = {
  76         .driver         = {
  77                 .name   = "simone-audio",
  78                 .owner  = THIS_MODULE,
  79         },
  80         .probe          = simone_probe,
  81         .remove         = __devexit_p(simone_remove),
  82 };
  83
  84 static int __init simone_init(void)
  85 {
  86         return platform_driver_register(&simone_driver);
  87 }
  88 module_init(simone_init);
  89
  90 static void __exit simone_exit(void)
  91 {
  92         platform_driver_unregister(&simone_driver);
  93 }
  94 module_exit(simone_exit);
  95
  96 MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One");
  97 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
  98 MODULE_LICENSE("GPL");
  99 MODULE_ALIAS("platform:simone-audio");