linux/drivers/iio/common/st_sensors/st_sensors_spi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * STMicroelectronics sensors spi library driver
 *
 * Copyright 2012-2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/iio/iio.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>

#include <linux/iio/common/st_sensors_spi.h>

#define ST_SENSORS_SPI_MULTIREAD …

static const struct regmap_config st_sensors_spi_regmap_config = …;

static const struct regmap_config st_sensors_spi_regmap_multiread_bit_config = …;

/*
 * st_sensors_is_spi_3_wire() - check if SPI 3-wire mode has been selected
 * @spi: spi device reference.
 *
 * Return: true if SPI 3-wire mode is selected, false otherwise.
 */
static bool st_sensors_is_spi_3_wire(struct spi_device *spi)
{ … }

/*
 * st_sensors_configure_spi_3_wire() - configure SPI 3-wire if needed
 * @spi: spi device reference.
 * @settings: sensor specific settings reference.
 *
 * Return: 0 on success, else a negative error code.
 */
static int st_sensors_configure_spi_3_wire(struct spi_device *spi,
					   struct st_sensor_settings *settings)
{ … }

/*
 * st_sensors_spi_configure() - configure SPI interface
 * @indio_dev: IIO device reference.
 * @spi: spi device reference.
 *
 * Return: 0 on success, else a negative error code.
 */
int st_sensors_spi_configure(struct iio_dev *indio_dev,
			     struct spi_device *spi)
{ … }
EXPORT_SYMBOL_NS(…);

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