1. 根目录:
2. sound
3. soc
4. sh
5. fsi-ak4642.c

/*
 * FSI-AK464x sound support for ms7724se
 *
 * Copyright (C) 2009 Renesas Solutions Corp.
 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/sh_fsi.h>

struct fsi_ak4642_data {
	const char *name;
	const char *card;
	const char *cpu_dai;
	const char *codec;
	const char *platform;
	int id;
};

static int fsi_ak4642_dai_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_dai *codec = rtd->codec_dai;
	struct snd_soc_dai *cpu = rtd->cpu_dai;
	int ret;

	ret = snd_soc_dai_set_fmt(codec, SND_SOC_DAIFMT_LEFT_J |
					 SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(codec, 0, 11289600, 0);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_fmt(cpu, SND_SOC_DAIFMT_LEFT_J |
				       SND_SOC_DAIFMT_CBS_CFS);

	return ret;
}

static struct snd_soc_dai_link fsi_dai_link = {
	.codec_dai_name	= "ak4642-hifi",
	.init		= fsi_ak4642_dai_init,
};

static struct snd_soc_card fsi_soc_card  = {
	.owner		= THIS_MODULE,
	.dai_link	= &fsi_dai_link,
	.num_links	= 1,
};

static struct platform_device *fsi_snd_device;

static int fsi_ak4642_probe(struct platform_device *pdev)
{
	int ret = -ENOMEM;
	struct fsi_ak4642_info *pinfo = pdev->dev.platform_data;

	if (!pinfo) {
		dev_err(&pdev->dev, "no info for fsi ak4642\n");
		goto out;
	}

	fsi_snd_device = platform_device_alloc("soc-audio", pinfo->id);
	if (!fsi_snd_device)
		goto out;

	fsi_dai_link.name		= pinfo->name;
	fsi_dai_link.stream_name	= pinfo->name;
	fsi_dai_link.cpu_dai_name	= pinfo->cpu_dai;
	fsi_dai_link.platform_name	= pinfo->platform;
	fsi_dai_link.codec_name		= pinfo->codec;
	fsi_soc_card.name		= pinfo->card;

	platform_set_drvdata(fsi_snd_device, &fsi_soc_card);
	ret = platform_device_add(fsi_snd_device);

	if (ret)
		platform_device_put(fsi_snd_device);

out:
	return ret;
}

static int fsi_ak4642_remove(struct platform_device *pdev)
{
	platform_device_unregister(fsi_snd_device);
	return 0;
}

static struct platform_driver fsi_ak4642 = {
	.driver = {
		.name	= "fsi-ak4642-audio",
	},
	.probe		= fsi_ak4642_probe,
	.remove		= fsi_ak4642_remove,
};

module_platform_driver(fsi_ak4642);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Generic SH4 FSI-AK4642 sound card");
MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");