linux/drivers/iio/proximity/rfd77402.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * rfd77402.c - Support for RF Digital RFD77402 Time-of-Flight (distance) sensor
 *
 * Copyright 2017 Peter Meerwald-Stadler <[email protected]>
 *
 * 7-bit I2C slave address 0x4c
 *
 * TODO: interrupt
 * https://media.digikey.com/pdf/Data%20Sheets/RF%20Digital%20PDFs/RFD77402.pdf
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/delay.h>

#include <linux/iio/iio.h>

#define RFD77402_DRV_NAME …

#define RFD77402_ICSR …
#define RFD77402_ICSR_INT_MODE …
#define RFD77402_ICSR_INT_POL …
#define RFD77402_ICSR_RESULT …
#define RFD77402_ICSR_M2H_MSG …
#define RFD77402_ICSR_H2M_MSG …
#define RFD77402_ICSR_RESET …

#define RFD77402_CMD_R …
#define RFD77402_CMD_SINGLE …
#define RFD77402_CMD_STANDBY …
#define RFD77402_CMD_MCPU_OFF …
#define RFD77402_CMD_MCPU_ON …
#define RFD77402_CMD_RESET …
#define RFD77402_CMD_VALID …

#define RFD77402_STATUS_R …
#define RFD77402_STATUS_PM_MASK …
#define RFD77402_STATUS_STANDBY …
#define RFD77402_STATUS_MCPU_OFF …
#define RFD77402_STATUS_MCPU_ON …

#define RFD77402_RESULT_R …
#define RFD77402_RESULT_DIST_MASK …
#define RFD77402_RESULT_ERR_MASK …
#define RFD77402_RESULT_VALID …

#define RFD77402_PMU_CFG …
#define RFD77402_PMU_MCPU_INIT …

#define RFD77402_I2C_INIT_CFG …
#define RFD77402_I2C_ADDR_INCR …
#define RFD77402_I2C_DATA_INCR …
#define RFD77402_I2C_HOST_DEBUG …
#define RFD77402_I2C_MCPU_DEBUG …

#define RFD77402_CMD_CFGR_A …
#define RFD77402_CMD_CFGR_B …
#define RFD77402_HFCFG_0 …
#define RFD77402_HFCFG_1 …
#define RFD77402_HFCFG_2 …
#define RFD77402_HFCFG_3 …

#define RFD77402_MOD_CHIP_ID …

/* magic configuration values from datasheet */
static const struct { … } rf77402_tof_config[] = …;

struct rfd77402_data { … };

static const struct iio_chan_spec rfd77402_channels[] = …;

static int rfd77402_set_state(struct i2c_client *client, u8 state, u16 check)
{ … }

static int rfd77402_measure(struct i2c_client *client)
{ … }

static int rfd77402_read_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan,
			     int *val, int *val2, long mask)
{ … }

static const struct iio_info rfd77402_info = …;

static int rfd77402_init(struct i2c_client *client)
{ … }

static int rfd77402_powerdown(struct i2c_client *client)
{ … }

static void rfd77402_disable(void *client)
{ … }

static int rfd77402_probe(struct i2c_client *client)
{ … }

static int rfd77402_suspend(struct device *dev)
{ … }

static int rfd77402_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(rfd77402_pm_ops, rfd77402_suspend,
				rfd77402_resume);

static const struct i2c_device_id rfd77402_id[] = …;
MODULE_DEVICE_TABLE(i2c, rfd77402_id);

static struct i2c_driver rfd77402_driver = …;

module_i2c_driver(…) …;

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