linux/drivers/iio/accel/dmard10.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * IIO driver for the 3-axis accelerometer Domintech ARD10.
 *
 * Copyright (c) 2016 Hans de Goede <[email protected]>
 * Copyright (c) 2012 Domintech Technology Co., Ltd
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/byteorder/generic.h>

#define DMARD10_REG_ACTR …
#define DMARD10_REG_AFEM …
#define DMARD10_REG_STADR …
#define DMARD10_REG_STAINT …
#define DMARD10_REG_MISC2 …
#define DMARD10_REG_PD …

#define DMARD10_MODE_OFF …
#define DMARD10_MODE_STANDBY …
#define DMARD10_MODE_ACTIVE …
#define DMARD10_MODE_READ_OTP …
#define DMARD10_MODE_RESET_DATA_PATH …

/* AFEN set 1, ATM[2:0]=b'000 (normal), EN_Z/Y/X/T=1 */
#define DMARD10_VALUE_AFEM_AFEN_NORMAL …
/* ODR[3:0]=b'0111 (100Hz), CCK[3:0]=b'0100 (204.8kHZ) */
#define DMARD10_VALUE_CKSEL_ODR_100_204 …
/* INTC[6:5]=b'00 */
#define DMARD10_VALUE_INTC …
/* TAP1/TAP2 Average 2 */
#define DMARD10_VALUE_TAPNS_AVE_2 …

#define DMARD10_VALUE_STADR …
#define DMARD10_VALUE_STAINT …
#define DMARD10_VALUE_MISC2_OSCA_EN …
#define DMARD10_VALUE_PD_RST …

/* Offsets into the buffer read in dmard10_read_raw() */
#define DMARD10_X_OFFSET …
#define DMARD10_Y_OFFSET …
#define DMARD10_Z_OFFSET …

/*
 * a value of + or -128 corresponds to + or - 1G
 * scale = 9.81 / 128 = 0.076640625
 */

static const int dmard10_nscale = …;

#define DMARD10_CHANNEL(reg, axis) …

static const struct iio_chan_spec dmard10_channels[] = …;

struct dmard10_data { … };

/* Init sequence taken from the android driver */
static int dmard10_reset(struct i2c_client *client)
{ … }

/* Shutdown sequence taken from the android driver */
static int dmard10_shutdown(struct i2c_client *client)
{ … }

static int dmard10_read_raw(struct iio_dev *indio_dev,
				struct iio_chan_spec const *chan,
				int *val, int *val2, long mask)
{ … }

static const struct iio_info dmard10_info = …;

static void dmard10_shutdown_cleanup(void *client)
{ … }

static int dmard10_probe(struct i2c_client *client)
{ … }

static int dmard10_suspend(struct device *dev)
{ … }

static int dmard10_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(dmard10_pm_ops, dmard10_suspend,
				dmard10_resume);

static const struct i2c_device_id dmard10_i2c_id[] = …;
MODULE_DEVICE_TABLE(i2c, dmard10_i2c_id);

static struct i2c_driver dmard10_driver = …;

module_i2c_driver(…) …;

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