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