linux/drivers/iio/gyro/itg3200_core.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * itg3200_core.c -- support InvenSense ITG3200
 *                   Digital 3-Axis Gyroscope driver
 *
 * Copyright (c) 2011 Christian Strobel <[email protected]>
 * Copyright (c) 2011 Manuel Stahl <[email protected]>
 * Copyright (c) 2012 Thorsten Nowak <[email protected]>
 *
 * TODO:
 * - Support digital low pass filter
 * - Support power management
 */

#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/delay.h>

#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/events.h>
#include <linux/iio/buffer.h>

#include <linux/iio/gyro/itg3200.h>


int itg3200_write_reg_8(struct iio_dev *indio_dev,
		u8 reg_address, u8 val)
{ … }

int itg3200_read_reg_8(struct iio_dev *indio_dev,
		u8 reg_address, u8 *val)
{ … }

static int itg3200_read_reg_s16(struct iio_dev *indio_dev, u8 lower_reg_address,
		int *val)
{ … }

static int itg3200_read_raw(struct iio_dev *indio_dev,
		const struct iio_chan_spec *chan,
		int *val, int *val2, long info)
{ … }

static int itg3200_write_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan,
			     int val,
			     int val2,
			     long mask)
{ … }

/*
 * Reset device and internal registers to the power-up-default settings
 * Use the gyro clock as reference, as suggested by the datasheet
 */
static int itg3200_reset(struct iio_dev *indio_dev)
{ … }

/* itg3200_enable_full_scale() - Disables the digital low pass filter */
static int itg3200_enable_full_scale(struct iio_dev *indio_dev)
{ … }

static int itg3200_initial_setup(struct iio_dev *indio_dev)
{ … }

static const struct iio_mount_matrix *
itg3200_get_mount_matrix(const struct iio_dev *indio_dev,
			  const struct iio_chan_spec *chan)
{ … }

static const struct iio_chan_spec_ext_info itg3200_ext_info[] = …;

#define ITG3200_ST …

#define ITG3200_GYRO_CHAN(_mod) …

static const struct iio_chan_spec itg3200_channels[] = …;

static const struct iio_info itg3200_info = …;

static const unsigned long itg3200_available_scan_masks[] = …;

static int itg3200_probe(struct i2c_client *client)
{ … }

static void itg3200_remove(struct i2c_client *client)
{ … }

static int itg3200_suspend(struct device *dev)
{ … }

static int itg3200_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(itg3200_pm_ops, itg3200_suspend,
				itg3200_resume);

static const struct i2c_device_id itg3200_id[] = …;
MODULE_DEVICE_TABLE(i2c, itg3200_id);

static const struct of_device_id itg3200_of_match[] = …;
MODULE_DEVICE_TABLE(of, itg3200_of_match);

static struct i2c_driver itg3200_driver = …;

module_i2c_driver(…) …;

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