ads117x.c
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/*
* ads117x.c -- Driver for ads1174/8 ADC chips
*
* Copyright 2009 ShotSpotter Inc.
* Author: Graeme Gregory <gg@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/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/soc.h>
#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("Input1"),
SND_SOC_DAPM_INPUT("Input2"),
SND_SOC_DAPM_INPUT("Input3"),
SND_SOC_DAPM_INPUT("Input4"),
SND_SOC_DAPM_INPUT("Input5"),
SND_SOC_DAPM_INPUT("Input6"),
SND_SOC_DAPM_INPUT("Input7"),
SND_SOC_DAPM_INPUT("Input8"),
};
static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
{ "Capture", NULL, "Input1" },
{ "Capture", NULL, "Input2" },
{ "Capture", NULL, "Input3" },
{ "Capture", NULL, "Input4" },
{ "Capture", NULL, "Input5" },
{ "Capture", NULL, "Input6" },
{ "Capture", NULL, "Input7" },
{ "Capture", NULL, "Input8" },
};
static struct snd_soc_dai_driver ads117x_dai = {
/* ADC */
.name = "ads117x-hifi",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 32,
.rates = ADS117X_RATES,
.formats = ADS117X_FORMATS,},
};
static struct snd_soc_codec_driver soc_codec_dev_ads117x = {
.dapm_widgets = ads117x_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ads117x_dapm_widgets),
.dapm_routes = ads117x_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(ads117x_dapm_routes),
};
static int ads117x_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_ads117x, &ads117x_dai, 1);
}
static int ads117x_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver ads117x_codec_driver = {
.driver = {
.name = "ads117x-codec",
.owner = THIS_MODULE,
},
.probe = ads117x_probe,
.remove = ads117x_remove,
};
module_platform_driver(ads117x_codec_driver);
MODULE_DESCRIPTION("ASoC ads117x driver");
MODULE_AUTHOR("Graeme Gregory");
MODULE_LICENSE("GPL");