linux/drivers/iio/accel/mma9551.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Freescale MMA9551L Intelligent Motion-Sensing Platform driver
 * Copyright (c) 2014, Intel Corporation.
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/events.h>
#include <linux/pm_runtime.h>
#include "mma9551_core.h"

#define MMA9551_DRV_NAME …
#define MMA9551_IRQ_NAME …
#define MMA9551_GPIO_COUNT …

/* Tilt application (inclination in IIO terms). */
#define MMA9551_TILT_XZ_ANG_REG …
#define MMA9551_TILT_YZ_ANG_REG …
#define MMA9551_TILT_XY_ANG_REG …
#define MMA9551_TILT_ANGFLG …
#define MMA9551_TILT_QUAD_REG …
#define MMA9551_TILT_XY_QUAD_SHIFT …
#define MMA9551_TILT_YZ_QUAD_SHIFT …
#define MMA9551_TILT_XZ_QUAD_SHIFT …
#define MMA9551_TILT_CFG_REG …
#define MMA9551_TILT_ANG_THRESH_MASK …

#define MMA9551_DEFAULT_SAMPLE_RATE …

/* Tilt events are mapped to the first three GPIO pins. */
enum mma9551_tilt_axis { … };

struct mma9551_data { … };

static int mma9551_read_incli_chan(struct i2c_client *client,
				   const struct iio_chan_spec *chan,
				   int *val)
{ … }

static int mma9551_read_raw(struct iio_dev *indio_dev,
			    struct iio_chan_spec const *chan,
			    int *val, int *val2, long mask)
{ … }

static int mma9551_read_event_config(struct iio_dev *indio_dev,
				     const struct iio_chan_spec *chan,
				     enum iio_event_type type,
				     enum iio_event_direction dir)
{ … }

static int mma9551_config_incli_event(struct iio_dev *indio_dev,
				      enum iio_modifier axis,
				      int state)
{ … }

static int mma9551_write_event_config(struct iio_dev *indio_dev,
				      const struct iio_chan_spec *chan,
				      enum iio_event_type type,
				      enum iio_event_direction dir,
				      int state)
{ … }

static int mma9551_write_event_value(struct iio_dev *indio_dev,
				     const struct iio_chan_spec *chan,
				     enum iio_event_type type,
				     enum iio_event_direction dir,
				     enum iio_event_info info,
				     int val, int val2)
{ … }

static int mma9551_read_event_value(struct iio_dev *indio_dev,
				    const struct iio_chan_spec *chan,
				    enum iio_event_type type,
				    enum iio_event_direction dir,
				    enum iio_event_info info,
				    int *val, int *val2)
{ … }

static const struct iio_event_spec mma9551_incli_event = …;

#define MMA9551_INCLI_CHANNEL(axis) …

static const struct iio_chan_spec mma9551_channels[] = …;

static const struct iio_info mma9551_info = …;

static irqreturn_t mma9551_event_handler(int irq, void *private)
{ … }

static int mma9551_init(struct mma9551_data *data)
{ … }

static int mma9551_gpio_probe(struct iio_dev *indio_dev)
{ … }

static const char *mma9551_match_acpi_device(struct device *dev)
{ … }

static int mma9551_probe(struct i2c_client *client)
{ … }

static void mma9551_remove(struct i2c_client *client)
{ … }

static int mma9551_runtime_suspend(struct device *dev)
{ … }

static int mma9551_runtime_resume(struct device *dev)
{ … }

static int mma9551_suspend(struct device *dev)
{ … }

static int mma9551_resume(struct device *dev)
{ … }

static const struct dev_pm_ops mma9551_pm_ops = …;

static const struct acpi_device_id mma9551_acpi_match[] = …;

MODULE_DEVICE_TABLE(acpi, mma9551_acpi_match);

static const struct i2c_device_id mma9551_id[] = …;

MODULE_DEVICE_TABLE(i2c, mma9551_id);

static struct i2c_driver mma9551_driver = …;

module_i2c_driver(…) …;

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