linux/drivers/iio/adc/ad7298.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AD7298 SPI ADC driver
 *
 * Copyright 2011 Analog Devices Inc.
 */

#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/spi/spi.h>
#include <linux/regulator/consumer.h>
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>

#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>

#define AD7298_WRITE …
#define AD7298_REPEAT …
#define AD7298_CH(x) …
#define AD7298_TSENSE …
#define AD7298_EXTREF …
#define AD7298_TAVG …
#define AD7298_PDD …

#define AD7298_MAX_CHAN …
#define AD7298_INTREF_mV …

#define AD7298_CH_TEMP …

struct ad7298_state { … };

#define AD7298_V_CHAN(index) …

static const struct iio_chan_spec ad7298_channels[] = …;

/*
 * ad7298_update_scan_mode() setup the spi transfer buffer for the new scan mask
 */
static int ad7298_update_scan_mode(struct iio_dev *indio_dev,
	const unsigned long *active_scan_mask)
{ … }

static irqreturn_t ad7298_trigger_handler(int irq, void *p)
{ … }

static int ad7298_scan_direct(struct ad7298_state *st, unsigned ch)
{ … }

static int ad7298_scan_temp(struct ad7298_state *st, int *val)
{ … }

static int ad7298_get_ref_voltage(struct ad7298_state *st)
{ … }

static int ad7298_read_raw(struct iio_dev *indio_dev,
			   struct iio_chan_spec const *chan,
			   int *val,
			   int *val2,
			   long m)
{ … }

static const struct iio_info ad7298_info = …;

static void ad7298_reg_disable(void *data)
{ … }

static int ad7298_probe(struct spi_device *spi)
{ … }

static const struct acpi_device_id ad7298_acpi_ids[] = …;
MODULE_DEVICE_TABLE(acpi, ad7298_acpi_ids);

static const struct spi_device_id ad7298_id[] = …;
MODULE_DEVICE_TABLE(spi, ad7298_id);

static struct spi_driver ad7298_driver = …;
module_spi_driver(…) …;

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