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// SPDX-License-Identifier: GPL-2.0
/*
* Generic sigma delta modulator driver
*
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
* Author: Arnaud Pouliquen <arnaud.pouliquen@st.com>.
*/
#include <linux/iio/iio.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/module.h>
#include <linux/of_device.h>
static const struct iio_info iio_sd_mod_iio_info;
static const struct iio_chan_spec iio_sd_mod_ch = {
.type = IIO_VOLTAGE,
.indexed = 1,
.scan_type = {
.sign = 'u',
.realbits = 1,
.shift = 0,
},
};
static int iio_sd_mod_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct iio_dev *iio;
iio = devm_iio_device_alloc(dev, 0);
if (!iio)
return -ENOMEM;
iio->dev.parent = dev;
iio->dev.of_node = dev->of_node;
iio->name = dev_name(dev);
iio->info = &iio_sd_mod_iio_info;
iio->modes = INDIO_BUFFER_HARDWARE;
iio->num_channels = 1;
iio->channels = &iio_sd_mod_ch;
platform_set_drvdata(pdev, iio);
return devm_iio_device_register(&pdev->dev, iio);
}
static const struct of_device_id sd_adc_of_match[] = {
{ .compatible = "sd-modulator" },
{ .compatible = "ads1201" },
{ }
};
MODULE_DEVICE_TABLE(of, sd_adc_of_match);
static struct platform_driver iio_sd_mod_adc = {
.driver = {
.name = "iio_sd_adc_mod",
.of_match_table = of_match_ptr(sd_adc_of_match),
},
.probe = iio_sd_mod_probe,
};
module_platform_driver(iio_sd_mod_adc);
MODULE_DESCRIPTION("Basic sigma delta modulator");
MODULE_AUTHOR("Arnaud Pouliquen <arnaud.pouliquen@st.com>");
MODULE_LICENSE("GPL v2");
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