smdk_wm9713.c

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/*
 * smdk_wm9713.c  --  SoC audio for SMDK
 *
 * Copyright 2010 Samsung Electronics Co. Ltd.
 * Author: Jaswinder Singh Brar <[email protected]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 */

#include <linux/module.h>
#include <sound/soc.h>

static struct snd_soc_card smdk;

/*
 * Default CFG switch settings to use this driver:
 *
 *   SMDK6410: Set CFG1 1-3 On, CFG2 1-4 Off
 *   SMDKC100: Set CFG6 1-3 On, CFG7 1   On
 *   SMDKC110: Set CFGB10 1-2 Off, CFGB12 1-3 On
 *   SMDKV210: Set CFGB10 1-2 Off, CFGB12 1-3 On
 *   SMDKV310: Set CFG2 1-2 Off, CFG4 All On, CFG7 All Off, CFG8 1-On
 */

/*
 Playback (HeadPhone):-
    $ amixer sset 'Headphone' unmute
    $ amixer sset 'Right Headphone Out Mux' 'Headphone'
    $ amixer sset 'Left Headphone Out Mux' 'Headphone'
    $ amixer sset 'Right HP Mixer PCM' unmute
    $ amixer sset 'Left HP Mixer PCM' unmute

 Capture (LineIn):-
    $ amixer sset 'Right Capture Source' 'Line'
    $ amixer sset 'Left Capture Source' 'Line'
*/

static struct snd_soc_dai_link smdk_dai = {
    .name = "AC97",
    .stream_name = "AC97 PCM",
    .platform_name = "samsung-audio",
    .cpu_dai_name = "samsung-ac97",
    .codec_dai_name = "wm9713-hifi",
    .codec_name = "wm9713-codec",
};

static struct snd_soc_card smdk = {
    .name = "SMDK WM9713",
    .owner = THIS_MODULE,
    .dai_link = &smdk_dai,
    .num_links = 1,
};

static struct platform_device *smdk_snd_wm9713_device;
static struct platform_device *smdk_snd_ac97_device;

static int __init smdk_init(void)
{
    int ret;

    smdk_snd_wm9713_device = platform_device_alloc("wm9713-codec", -1);
    if (!smdk_snd_wm9713_device)
        return -ENOMEM;

    ret = platform_device_add(smdk_snd_wm9713_device);
    if (ret)
        goto err1;

    smdk_snd_ac97_device = platform_device_alloc("soc-audio", -1);
    if (!smdk_snd_ac97_device) {
        ret = -ENOMEM;
        goto err2;
    }

    platform_set_drvdata(smdk_snd_ac97_device, &smdk);

    ret = platform_device_add(smdk_snd_ac97_device);
    if (ret)
        goto err3;

    return 0;

err3:
    platform_device_put(smdk_snd_ac97_device);
err2:
    platform_device_del(smdk_snd_wm9713_device);
err1:
    platform_device_put(smdk_snd_wm9713_device);
    return ret;
}

static void __exit smdk_exit(void)
{
    platform_device_unregister(smdk_snd_ac97_device);
    platform_device_unregister(smdk_snd_wm9713_device);
}

module_init(smdk_init);
module_exit(smdk_exit);

/* Module information */
MODULE_AUTHOR("Jaswinder Singh Brar, [email protected]");
MODULE_DESCRIPTION("ALSA SoC SMDK+WM9713");
MODULE_LICENSE("GPL");