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 static struct platform_device *simone_snd_device;
  43
  44 static int __init simone_init(void)
  45 {
  46         int ret;
  47
  48         if (!machine_is_sim_one())
  49                 return -ENODEV;
  50
  51         simone_snd_ac97_device = platform_device_alloc("ac97-codec", -1);
  52         if (!simone_snd_ac97_device)
  53                 return -ENOMEM;
  54
  55         ret = platform_device_add(simone_snd_ac97_device);
  56         if (ret)
  57                 goto fail1;
  58
  59         simone_snd_device = platform_device_alloc("soc-audio", -1);
  60         if (!simone_snd_device) {
  61                 ret = -ENOMEM;
  62                 goto fail2;
  63         }
  64
  65         platform_set_drvdata(simone_snd_device, &snd_soc_simone);
  66         ret = platform_device_add(simone_snd_device);
  67         if (ret)
  68                 goto fail3;
  69
  70         return 0;
  71
  72 fail3:
  73         platform_device_put(simone_snd_device);
  74 fail2:
  75         platform_device_del(simone_snd_ac97_device);
  76 fail1:
  77         platform_device_put(simone_snd_ac97_device);
  78         return ret;
  79 }
  80 module_init(simone_init);
  81
  82 static void __exit simone_exit(void)
  83 {
  84         platform_device_unregister(simone_snd_device);
  85         platform_device_unregister(simone_snd_ac97_device);
  86 }
  87 module_exit(simone_exit);
  88
  89 MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One");
  90 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
  91 MODULE_LICENSE("GPL");