linux/drivers/iio/temperature/max30208.c

// SPDX-License-Identifier: GPL-2.0-only

/*
 * Copyright (c) Rajat Khandelwal <[email protected]>
 *
 * Maxim MAX30208 digital temperature sensor with 0.1°C accuracy
 * (7-bit I2C slave address (0x50 - 0x53))
 */

#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/types.h>

#define MAX30208_STATUS …
#define MAX30208_STATUS_TEMP_RDY …
#define MAX30208_INT_ENABLE …
#define MAX30208_INT_ENABLE_TEMP_RDY …

#define MAX30208_FIFO_OVF_CNTR …
#define MAX30208_FIFO_DATA_CNTR …
#define MAX30208_FIFO_DATA …

#define MAX30208_FIFO_CONFIG …
#define MAX30208_FIFO_CONFIG_RO …

#define MAX30208_SYSTEM_CTRL …
#define MAX30208_SYSTEM_CTRL_RESET …

#define MAX30208_TEMP_SENSOR_SETUP …
#define MAX30208_TEMP_SENSOR_SETUP_CONV …

struct max30208_data { … };

static const struct iio_chan_spec max30208_channels[] = …;

/**
 * max30208_request() - Request a reading
 * @data: Struct comprising member elements of the device
 *
 * Requests a reading from the device and waits until the conversion is ready.
 */
static int max30208_request(struct max30208_data *data)
{ … }

static int max30208_update_temp(struct max30208_data *data)
{ … }

/**
 * max30208_config_setup() - Set up FIFO configuration register
 * @data: Struct comprising member elements of the device
 *
 * Sets the rollover bit to '1' to enable overwriting FIFO during overflow.
 */
static int max30208_config_setup(struct max30208_data *data)
{ … }

static int max30208_read(struct iio_dev *indio_dev,
			 struct iio_chan_spec const *chan,
			 int *val, int *val2, long mask)
{ … }

static const struct iio_info max30208_info = …;

static int max30208_probe(struct i2c_client *i2c)
{ … }

static const struct i2c_device_id max30208_id_table[] = …;
MODULE_DEVICE_TABLE(i2c, max30208_id_table);

static const struct acpi_device_id max30208_acpi_match[] = …;
MODULE_DEVICE_TABLE(acpi, max30208_acpi_match);

static const struct of_device_id max30208_of_match[] = …;
MODULE_DEVICE_TABLE(of, max30208_of_match);

static struct i2c_driver max30208_driver = …;
module_i2c_driver(…) …;

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