sh7760-ac97.c

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/*
 * Generic AC97 sound support for SH7760
 *
 * (c) 2007 Manuel Lauss
 *
 * Licensed under the GPLv2.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/io.h>

#define IPSEL 0xFE400034

static struct snd_soc_dai_link sh7760_ac97_dai = {
    .name = "AC97",
    .stream_name = "AC97 HiFi",
    .cpu_dai_name = "hac-dai.0",    /* HAC0 */
    .codec_dai_name = "ac97-hifi",
    .platform_name = "sh7760-pcm-audio",
    .codec_name = "ac97-codec",
    .ops = NULL,
};

static struct snd_soc_card sh7760_ac97_soc_machine  = {
    .name = "SH7760 AC97",
    .owner = THIS_MODULE,
    .dai_link = &sh7760_ac97_dai,
    .num_links = 1,
};

static struct platform_device *sh7760_ac97_snd_device;

static int __init sh7760_ac97_init(void)
{
    int ret;
    unsigned short ipsel;

    /* enable both AC97 controllers in pinmux reg */
    ipsel = __raw_readw(IPSEL);
    __raw_writew(ipsel | (3 << 10), IPSEL);

    ret = -ENOMEM;
    sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
    if (!sh7760_ac97_snd_device)
        goto out;

    platform_set_drvdata(sh7760_ac97_snd_device,
                 &sh7760_ac97_soc_machine);
    ret = platform_device_add(sh7760_ac97_snd_device);

    if (ret)
        platform_device_put(sh7760_ac97_snd_device);

out:
    return ret;
}

static void __exit sh7760_ac97_exit(void)
{
    platform_device_unregister(sh7760_ac97_snd_device);
}

module_init(sh7760_ac97_init);
module_exit(sh7760_ac97_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
MODULE_AUTHOR("Manuel Lauss <[email protected]>");