/*
 * itel.c  --  ALSA SoC Audio Layer utility functions
 *
 * Copyright 2009 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *         Liam Girdwood <lrg@slimlogic.co.uk>
 *         
 *
 *  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 <linux/moduleparam.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <linux/of.h>

static struct snd_soc_platform_driver itel_platform = {
	//.ops = &dummy_dma_ops,
};

#define ITEL_RX_RATES	SNDRV_PCM_RATE_8000_192000
#define ITEL_RX_FORMATS	(   SNDRV_PCM_FMTBIT_S16_LE |   \
			                SNDRV_PCM_FMTBIT_S20_3LE|   \
			                SNDRV_PCM_FMTBIT_S24_LE |   \
			                SNDRV_PCM_FMTBIT_S32_LE )

#define ITEL_TX_RATES	SNDRV_PCM_RATE_8000_192000
#define ITEL_TX_FORMATS	(   SNDRV_PCM_FMTBIT_S16_LE |   \
			                SNDRV_PCM_FMTBIT_S20_3LE|   \
			                SNDRV_PCM_FMTBIT_S24_LE |   \
			                SNDRV_PCM_FMTBIT_S32_LE)

static const struct snd_soc_dapm_widget itel_widgets[] = {
	SND_SOC_DAPM_INPUT("i2s-in"),
	SND_SOC_DAPM_OUTPUT("i2s-out"),
};

static const struct snd_soc_dapm_route itel_routes[] = {
	{ "Capture", NULL, "i2s-in" },
	{ "i2s-out", NULL, "Playback" },
};

static struct snd_soc_codec_driver itel_codec = {
	.dapm_widgets = itel_widgets,
	.num_dapm_widgets = ARRAY_SIZE(itel_widgets),
	.dapm_routes = itel_routes,
	.num_dapm_routes = ARRAY_SIZE(itel_routes),
};

static struct snd_soc_dai_driver itel_dai = {
	.name = "snd-soc-itel-dai",
	.playback = {
		.stream_name	= "Playback",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates		= ITEL_TX_RATES,
		.formats	= ITEL_TX_FORMATS,
	},
	.capture = {
		.stream_name	= "Capture",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates = ITEL_RX_RATES,
		.formats = ITEL_RX_FORMATS,
	 },
};

static int snd_soc_itel_probe(struct platform_device *pdev)
{
	int ret;

	return snd_soc_register_codec(&pdev->dev, &itel_codec, &itel_dai, 1);
	if (ret < 0)
		return ret;

	ret = snd_soc_register_platform(&pdev->dev, &itel_platform);
	if (ret < 0) {
		snd_soc_unregister_codec(&pdev->dev);
		return ret;
	}

	return ret;
}

static int snd_soc_itel_remove(struct platform_device *pdev)
{
	snd_soc_unregister_platform(&pdev->dev);
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

#ifdef CONFIG_OF
static const struct of_device_id soc_itel_ids[] = {
    { .compatible = "fsl,snd-soc-itel", },
    { }
};
MODULE_DEVICE_TABLE(of, soc_itel_ids);
#endif

static struct platform_driver soc_itel_driver = {
	.probe = snd_soc_itel_probe,
	.remove = snd_soc_itel_remove,
	.driver = {
		.name = "snd-soc-itel",
		.owner = THIS_MODULE,
        .of_match_table = of_match_ptr(soc_itel_ids),
	},
};

module_platform_driver(soc_itel_driver);

MODULE_AUTHOR("Nicola Lunghi <nicola.lunghi@itel.it>");
MODULE_DESCRIPTION("ITEL I2S Codec Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:snd-soc-itel");