kernel/sound/soc/cirrus/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 static struct snd_soc_dai_link simone_dai = {
  25         .name           = "AC97",
  26         .stream_name    = "AC97 HiFi",
  27         .cpu_dai_name   = "ep93xx-ac97",
  28         .codec_dai_name = "ac97-hifi",
  29         .codec_name     = "ac97-codec",
  30         .platform_name  = "ep93xx-ac97",
  31 };
  32
  33 static struct snd_soc_card snd_soc_simone = {
  34         .name           = "Sim.One",
  35         .owner          = THIS_MODULE,
  36         .dai_link       = &simone_dai,
  37         .num_links      = 1,
  38 };
  39
  40 static struct platform_device *simone_snd_ac97_device;
  41
  42 static int simone_probe(struct platform_device *pdev)
  43 {
  44         struct snd_soc_card *card = &snd_soc_simone;
  45         int ret;
  46
  47         simone_snd_ac97_device = platform_device_register_simple("ac97-codec",
  48                                                                  -1, NULL, 0);
  49         if (IS_ERR(simone_snd_ac97_device))
  50                 return PTR_ERR(simone_snd_ac97_device);
  51
  52         card->dev = &pdev->dev;
  53
  54         ret = snd_soc_register_card(card);
  55         if (ret) {
  56                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
  57                         ret);
  58                 platform_device_unregister(simone_snd_ac97_device);
  59         }
  60
  61         return ret;
  62 }
  63
  64 static int simone_remove(struct platform_device *pdev)
  65 {
  66         struct snd_soc_card *card = platform_get_drvdata(pdev);
  67
  68         snd_soc_unregister_card(card);
  69         platform_device_unregister(simone_snd_ac97_device);
  70
  71         return 0;
  72 }
  73
  74 static struct platform_driver simone_driver = {
  75         .driver         = {
  76                 .name   = "simone-audio",
  77         },
  78         .probe          = simone_probe,
  79         .remove         = simone_remove,
  80 };
  81
  82 module_platform_driver(simone_driver);
  83
  84 MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One");
  85 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
  86 MODULE_LICENSE("GPL");
  87 MODULE_ALIAS("platform:simone-audio");