linux/drivers/iio/adc/max11100.c

// SPDX-License-Identifier: GPL-2.0
/*
 * iio/adc/max11100.c
 * Maxim max11100 ADC Driver with IIO interface
 *
 * Copyright (C) 2016-17 Renesas Electronics Corporation
 * Copyright (C) 2016-17 Jacopo Mondi
 */
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/unaligned.h>

#include <linux/iio/iio.h>
#include <linux/iio/driver.h>

/*
 * LSB is the ADC single digital step
 * 1 LSB = (vref_mv / 2 ^ 16)
 *
 * LSB is used to calculate analog voltage value
 * from the number of ADC steps count
 *
 * Ain = (count * LSB)
 */
#define MAX11100_LSB_DIV …

struct max11100_state { … };

static const struct iio_chan_spec max11100_channels[] = …;

static int max11100_read_single(struct iio_dev *indio_dev, int *val)
{ … }

static int max11100_read_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan,
			     int *val, int *val2, long info)
{ … }

static const struct iio_info max11100_info = …;

static void max11100_regulator_disable(void *reg)
{ … }

static int max11100_probe(struct spi_device *spi)
{ … }

static const struct of_device_id max11100_ids[] = …;
MODULE_DEVICE_TABLE(of, max11100_ids);

static struct spi_driver max11100_driver = …;

module_spi_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;