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67 lines
1.5 KiB
67 lines
1.5 KiB
// 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 <[email protected]>. |
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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/mod_devicetable.h> |
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#include <linux/platform_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->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 = 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 <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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