linux/drivers/iio/adc/rn5t618-adc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * ADC driver for the RICOH RN5T618 power management chip family
 *
 * Copyright (C) 2019 Andreas Kemnade
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mfd/rn5t618.h>
#include <linux/platform_device.h>
#include <linux/completion.h>
#include <linux/regmap.h>
#include <linux/iio/iio.h>
#include <linux/iio/driver.h>
#include <linux/iio/machine.h>
#include <linux/slab.h>

#define RN5T618_ADC_CONVERSION_TIMEOUT …
#define RN5T618_REFERENCE_VOLT …

/* mask for selecting channels for single conversion */
#define RN5T618_ADCCNT3_CHANNEL_MASK …
/* average 4-time conversion mode */
#define RN5T618_ADCCNT3_AVG …
/* set for starting a single conversion, gets cleared by hw when done */
#define RN5T618_ADCCNT3_GODONE …
/* automatic conversion, period is in ADCCNT2, selected channels are
 * in ADCCNT1
 */
#define RN5T618_ADCCNT3_AUTO …
#define RN5T618_ADCEND_IRQ …

struct rn5t618_adc_data { … };

enum rn5t618_channels { … };

static const struct u16_fract rn5t618_ratios[8] = …;

static int rn5t618_read_adc_reg(struct rn5t618 *rn5t618, int reg, u16 *val)
{ … }

static irqreturn_t rn5t618_adc_irq(int irq, void *data)
{ … }

static int rn5t618_adc_read(struct iio_dev *iio_dev,
			    const struct iio_chan_spec *chan,
			    int *val, int *val2, long mask)
{ … }

static const struct iio_info rn5t618_adc_iio_info = …;

#define RN5T618_ADC_CHANNEL(_channel, _type, _name) …

static const struct iio_chan_spec rn5t618_adc_iio_channels[] = …;

static struct iio_map rn5t618_maps[] = …;

static int rn5t618_adc_probe(struct platform_device *pdev)
{ … }

static struct platform_driver rn5t618_adc_driver = …;

module_platform_driver(…) …;
MODULE_ALIAS(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;