free electrons

Embedded Linux Experts

/*
 * sound/soc/codecs/wm8782.c
 * simple, strap-pin configured 24bit 2ch ADC
 *
 * Copyright: 2011 Raumfeld GmbH
 * Author: Johannes Stezenbach <js@sig21.net>
 *
 * based on ad73311.c
 * Copyright:	Analog Device Inc.
 * Author:	Cliff Cai <cliff.cai@analog.com>
 *
 * 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/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>

static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("AINL"),
SND_SOC_DAPM_INPUT("AINR"),
};

static const struct snd_soc_dapm_route wm8782_dapm_routes[] = {
	{ "Capture", NULL, "AINL" },
	{ "Capture", NULL, "AINR" },
};

static struct snd_soc_dai_driver wm8782_dai = {
	.name = "wm8782",
	.capture = {
		.stream_name = "Capture",
		.channels_min = 2,
		.channels_max = 2,
		/* For configurations with FSAMPEN=0 */
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE |
			   SNDRV_PCM_FMTBIT_S20_3LE |
			   SNDRV_PCM_FMTBIT_S24_LE,
	},
};

static const struct snd_soc_codec_driver soc_codec_dev_wm8782 = {
	.component_driver = {
		.dapm_widgets		= wm8782_dapm_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),
		.dapm_routes		= wm8782_dapm_routes,
		.num_dapm_routes	= ARRAY_SIZE(wm8782_dapm_routes),
	},
};

static int wm8782_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev,
			&soc_codec_dev_wm8782, &wm8782_dai, 1);
}

static int wm8782_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

static struct platform_driver wm8782_codec_driver = {
	.driver = {
		.name = "wm8782",
	},
	.probe = wm8782_probe,
	.remove = wm8782_remove,
};

module_platform_driver(wm8782_codec_driver);

MODULE_DESCRIPTION("ASoC WM8782 driver");
MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
MODULE_LICENSE("GPL");