linux/drivers/acpi/fan_hwmon.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * hwmon interface for the ACPI Fan driver.
 *
 * Copyright (C) 2024 Armin Wolf <[email protected]>
 */

#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/limits.h>
#include <linux/types.h>
#include <linux/units.h>

#include "fan.h"

/* Returned when the ACPI fan does not support speed reporting */
#define FAN_SPEED_UNAVAILABLE …
#define FAN_POWER_UNAVAILABLE …

static struct acpi_fan_fps *acpi_fan_get_current_fps(struct acpi_fan *fan, u64 control)
{ … }

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

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

static const struct hwmon_ops acpi_fan_hwmon_ops = …;

static const struct hwmon_channel_info * const acpi_fan_hwmon_info[] = …;

static const struct hwmon_chip_info acpi_fan_hwmon_chip_info = …;

int devm_acpi_fan_create_hwmon(struct acpi_device *device)
{ … }