LXR linux/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
  38static 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
  53static 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
  60static struct snd_soc_device em_x270_snd_devdata = {
  61        .card = &em_x270,
  62        .codec_dev = &soc_codec_dev_wm9712,
  63};
  64
  65static struct platform_device *em_x270_snd_device;
  66
  67static 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
  89static void __exit em_x270_exit(void)
  90{
  91        platform_device_unregister(em_x270_snd_device);
  92}
  93
  94module_init(em_x270_init);
  95module_exit(em_x270_exit);
  96
  97/* Module information */
  98MODULE_AUTHOR("Mike Rapoport");
  99MODULE_DESCRIPTION("ALSA SoC EM-X270, eXeda and CM-X300");
 100MODULE_LICENSE("GPL");
 101