linux-vybrid_public/sound/soc/ep93xx/simone.c

/*
 * simone.c -- ASoC audio for Simplemachines Sim.One board
 *
 * Copyright (c) 2010 Mika Westerberg
 *
 * Based on snappercl15 machine driver by Ryan Mallon.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>

#include <asm/mach-types.h>
#include <mach/hardware.h>

#include "ep93xx-pcm.h"

static struct snd_soc_dai_link simone_dai = {
	.name		= "AC97",
	.stream_name	= "AC97 HiFi",
	.cpu_dai_name	= "ep93xx-ac97",
	.codec_dai_name	= "ac97-hifi",
	.codec_name	= "ac97-codec",
	.platform_name	= "ep93xx-pcm-audio",
};

static struct snd_soc_card snd_soc_simone = {
	.name		= "Sim.One",
	.dai_link	= &simone_dai,
	.num_links	= 1,
};

static struct platform_device *simone_snd_ac97_device;
static struct platform_device *simone_snd_device;

static int __init simone_init(void)
{
	int ret;

	if (!machine_is_sim_one())
		return -ENODEV;

	simone_snd_ac97_device = platform_device_alloc("ac97-codec", -1);
	if (!simone_snd_ac97_device)
		return -ENOMEM;

	ret = platform_device_add(simone_snd_ac97_device);
	if (ret)
		goto fail1;

	simone_snd_device = platform_device_alloc("soc-audio", -1);
	if (!simone_snd_device) {
		ret = -ENOMEM;
		goto fail2;
	}

	platform_set_drvdata(simone_snd_device, &snd_soc_simone);
	ret = platform_device_add(simone_snd_device);
	if (ret)
		goto fail3;

	return 0;

fail3:
	platform_device_put(simone_snd_device);
fail2:
	platform_device_del(simone_snd_ac97_device);
fail1:
	platform_device_put(simone_snd_ac97_device);
	return ret;
}
module_init(simone_init);

static void __exit simone_exit(void)
{
	platform_device_unregister(simone_snd_device);
	platform_device_unregister(simone_snd_ac97_device);
}
module_exit(simone_exit);

MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One");
MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
MODULE_LICENSE("GPL");