sound/soc/pxa/em-x270.c

   1 /*
   2  * SoC audio driver for EM-X270, eXeda and CM-X300
   3  *
   4  * Copyright 2007, 2009 CompuLab, Ltd.
   5  *
   6  * Author: Mike Rapoport <mike@compulab.co.il>
   7  *
   8  * Copied from tosa.c:
   9  * Copyright 2005 Wolfson Microelectronics PLC.
  10  * Copyright 2005 Openedhand Ltd.
  11  *
  12  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
  13  *          Richard Purdie <richard@openedhand.com>
  14  *
  15  *  This program is free software; you can redistribute  it and/or modify it
  16  *  under  the terms of  the GNU General  Public License as published by the
  17  *  Free Software Foundation;  either version 2 of the  License, or (at your
  18  *  option) any later version.
  19  *
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/moduleparam.h>
  24 #include <linux/device.h>
  25
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <mach/audio.h>
  33
  34 #include "../codecs/wm9712.h"
  35 #include "pxa2xx-pcm.h"
  36 #include "pxa2xx-ac97.h"
  37
  38 static struct snd_soc_dai_link em_x270_dai[] = {
  39         {
  40                 .name = "AC97",
  41                 .stream_name = "AC97 HiFi",
  42                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
  43                 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
  44         },
  45         {
  46                 .name = "AC97 Aux",
  47                 .stream_name = "AC97 Aux",
  48                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
  49                 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
  50         },
  51 };
  52
  53 static struct snd_soc_card em_x270 = {
  54         .name = "EM-X270",
  55         .platform = &pxa2xx_soc_platform,
  56         .dai_link = em_x270_dai,
  57         .num_links = ARRAY_SIZE(em_x270_dai),
  58 };
  59
  60 static struct snd_soc_device em_x270_snd_devdata = {
  61         .card = &em_x270,
  62         .codec_dev = &soc_codec_dev_wm9712,
  63 };
  64
  65 static struct platform_device *em_x270_snd_device;
  66
  67 static int __init em_x270_init(void)
  68 {
  69         int ret;
  70
  71         if (!(machine_is_em_x270() || machine_is_exeda()
  72               || machine_is_cm_x300()))
  73                 return -ENODEV;
  74
  75         em_x270_snd_device = platform_device_alloc("soc-audio", -1);
  76         if (!em_x270_snd_device)
  77                 return -ENOMEM;
  78
  79         platform_set_drvdata(em_x270_snd_device, &em_x270_snd_devdata);
  80         em_x270_snd_devdata.dev = &em_x270_snd_device->dev;
  81         ret = platform_device_add(em_x270_snd_device);
  82
  83         if (ret)
  84                 platform_device_put(em_x270_snd_device);
  85
  86         return ret;
  87 }
  88
  89 static void __exit em_x270_exit(void)
  90 {
  91         platform_device_unregister(em_x270_snd_device);
  92 }
  93
  94 module_init(em_x270_init);
  95 module_exit(em_x270_exit);
  96
  97 /* Module information */
  98 MODULE_AUTHOR("Mike Rapoport");
  99 MODULE_DESCRIPTION("ALSA SoC EM-X270, eXeda and CM-X300");
 100 MODULE_LICENSE("GPL");