linux/drivers/hwmon/hs3001.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * This is a non-complete driver implementation for the
 * HS3001 humidity and temperature sensor and compatibles. It does not include
 * the configuration possibilities, where it needs to be set to 'programming mode'
 * during power-up.
 *
 *
 * Copyright (C) 2023 SYS TEC electronic AG
 * Author: Andre Werner <[email protected]>
 */

#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/slab.h>
#include <linux/types.h>

/* Measurement times */
#define HS3001_WAKEUP_TIME …
#define HS3001_8BIT_RESOLUTION …
#define HS3001_10BIT_RESOLUTION …
#define HS3001_12BIT_RESOLUTION …
#define HS3001_14BIT_RESOLUTION …

#define HS3001_RESPONSE_LENGTH …

#define HS3001_FIXPOINT_ARITH …

#define HS3001_MASK_HUMIDITY_0X3FFF …
#define HS3001_MASK_STATUS_0XC0 …

/* Definitions for Status Bits of A/D Data */
#define HS3001_DATA_VALID …
#define HS3001_DATA_STALE …

struct hs3001_data { … };

static int hs3001_extract_temperature(u16 raw)
{ … }

static u32 hs3001_extract_humidity(u16 raw)
{ … }

static int hs3001_data_fetch_command(struct i2c_client *client,
				     struct hs3001_data *data)
{ … }

static umode_t hs3001_is_visible(const void *data, enum hwmon_sensor_types type,
				 u32 attr, int channel)
{ … }

static int hs3001_read(struct device *dev, enum hwmon_sensor_types type,
		       u32 attr, int channel, long *val)
{ … }

static const struct hwmon_channel_info *hs3001_info[] = …;

static const struct hwmon_ops hs3001_hwmon_ops = …;

static const struct hwmon_chip_info hs3001_chip_info = …;

/* device ID table */
static const struct i2c_device_id hs3001_ids[] = …;

MODULE_DEVICE_TABLE(i2c, hs3001_ids);

static const struct of_device_id hs3001_of_match[] = …;

MODULE_DEVICE_TABLE(of, hs3001_of_match);

static int hs3001_probe(struct i2c_client *client)
{ … }

static struct i2c_driver hs3001_i2c_driver = …;

module_i2c_driver(…) …;

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