/* SPDX-License-Identifier: GPL-2.0-only */
/*
hwmon.h - part of lm_sensors, Linux kernel modules for hardware monitoring
This file declares helper functions for the sysfs class "hwmon",
for use by sensors drivers.
Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com>
*/
#ifndef _HWMON_H_
#define _HWMON_H_
#include <linux/bitops.h>
struct device;
struct attribute_group;
enum hwmon_sensor_types {
hwmon_chip,
hwmon_temp,
hwmon_in,
hwmon_curr,
hwmon_power,
hwmon_energy,
hwmon_humidity,
hwmon_fan,
hwmon_pwm,
hwmon_intrusion,
hwmon_max,
};
enum hwmon_chip_attributes {
hwmon_chip_temp_reset_history,
hwmon_chip_in_reset_history,
hwmon_chip_curr_reset_history,
hwmon_chip_power_reset_history,
hwmon_chip_register_tz,
hwmon_chip_update_interval,
hwmon_chip_alarms,
hwmon_chip_samples,
hwmon_chip_curr_samples,
hwmon_chip_in_samples,
hwmon_chip_power_samples,
hwmon_chip_temp_samples,
};
#define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history)
#define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history)
#define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history)
#define HWMON_C_POWER_RESET_HISTORY BIT(hwmon_chip_power_reset_history)
#define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz)
#define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval)
#define HWMON_C_ALARMS BIT(hwmon_chip_alarms)
#define HWMON_C_SAMPLES BIT(hwmon_chip_samples)
#define HWMON_C_CURR_SAMPLES BIT(hwmon_chip_curr_samples)
#define HWMON_C_IN_SAMPLES BIT(hwmon_chip_in_samples)
#define HWMON_C_POWER_SAMPLES BIT(hwmon_chip_power_samples)
#define HWMON_C_TEMP_SAMPLES BIT(hwmon_chip_temp_samples)
enum hwmon_temp_attributes {
hwmon_temp_enable,
hwmon_temp_input,
hwmon_temp_type,
hwmon_temp_lcrit,
hwmon_temp_lcrit_hyst,
hwmon_temp_min,
hwmon_temp_min_hyst,
hwmon_temp_max,
hwmon_temp_max_hyst,
hwmon_temp_crit,
hwmon_temp_crit_hyst,
hwmon_temp_emergency,
hwmon_temp_emergency_hyst,
hwmon_temp_alarm,
hwmon_temp_lcrit_alarm,
hwmon_temp_min_alarm,
hwmon_temp_max_alarm,
hwmon_temp_crit_alarm,
hwmon_temp_emergency_alarm,
hwmon_temp_fault,
hwmon_temp_offset,
hwmon_temp_label,
hwmon_temp_lowest,
hwmon_temp_highest,
hwmon_temp_reset_history,
hwmon_temp_rated_min,
hwmon_temp_rated_max,
};
#define HWMON_T_ENABLE BIT(hwmon_temp_enable)
#define HWMON_T_INPUT BIT(hwmon_temp_input)
#define HWMON_T_TYPE BIT(hwmon_temp_type)
#define HWMON_T_LCRIT BIT(hwmon_temp_lcrit)
#define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst)
#define HWMON_T_MIN BIT(hwmon_temp_min)
#define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst)
#define HWMON_T_MAX BIT(hwmon_temp_max)
#define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst)
#define HWMON_T_CRIT BIT(hwmon_temp_crit)
#define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst)
#define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency)
#define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst)
#define HWMON_T_ALARM BIT(hwmon_temp_alarm)
#define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm)
#define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm)
#define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm)
#define HWMON_T_LCRIT_ALARM BIT(hwmon_temp_lcrit_alarm)
#define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm)
#define HWMON_T_FAULT BIT(hwmon_temp_fault)
#define HWMON_T_OFFSET BIT(hwmon_temp_offset)
#define HWMON_T_LABEL BIT(hwmon_temp_label)
#define HWMON_T_LOWEST BIT(hwmon_temp_lowest)
#define HWMON_T_HIGHEST BIT(hwmon_temp_highest)
#define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history)
#define HWMON_T_RATED_MIN BIT(hwmon_temp_rated_min)
#define HWMON_T_RATED_MAX BIT(hwmon_temp_rated_max)
enum hwmon_in_attributes {
hwmon_in_enable,
hwmon_in_input,
hwmon_in_min,
hwmon_in_max,
hwmon_in_lcrit,
hwmon_in_crit,
hwmon_in_average,
hwmon_in_lowest,
hwmon_in_highest,
hwmon_in_reset_history,
hwmon_in_label,
hwmon_in_alarm,
hwmon_in_min_alarm,
hwmon_in_max_alarm,
hwmon_in_lcrit_alarm,
hwmon_in_crit_alarm,
hwmon_in_rated_min,
hwmon_in_rated_max,
};
#define HWMON_I_ENABLE BIT(hwmon_in_enable)
#define HWMON_I_INPUT BIT(hwmon_in_input)
#define HWMON_I_MIN BIT(hwmon_in_min)
#define HWMON_I_MAX BIT(hwmon_in_max)
#define HWMON_I_LCRIT BIT(hwmon_in_lcrit)
#define HWMON_I_CRIT BIT(hwmon_in_crit)
#define HWMON_I_AVERAGE BIT(hwmon_in_average)
#define HWMON_I_LOWEST BIT(hwmon_in_lowest)
#define HWMON_I_HIGHEST BIT(hwmon_in_highest)
#define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history)
#define HWMON_I_LABEL BIT(hwmon_in_label)
#define HWMON_I_ALARM BIT(hwmon_in_alarm)
#define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm)
#define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm)
#define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm)
#define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm)
#define HWMON_I_RATED_MIN BIT(hwmon_in_rated_min)
#define HWMON_I_RATED_MAX BIT(hwmon_in_rated_max)
enum hwmon_curr_attributes {
hwmon_curr_enable,
hwmon_curr_input,
hwmon_curr_min,
hwmon_curr_max,
hwmon_curr_lcrit,
hwmon_curr_crit,
hwmon_curr_average,
hwmon_curr_lowest,
hwmon_curr_highest,
hwmon_curr_reset_history,
hwmon_curr_label,
hwmon_curr_alarm,
hwmon_curr_min_alarm,
hwmon_curr_max_alarm,
hwmon_curr_lcrit_alarm,
hwmon_curr_crit_alarm,
hwmon_curr_rated_min,
hwmon_curr_rated_max,
};
#define HWMON_C_ENABLE BIT(hwmon_curr_enable)
#define HWMON_C_INPUT BIT(hwmon_curr_input)
#define HWMON_C_MIN BIT(hwmon_curr_min)
#define HWMON_C_MAX BIT(hwmon_curr_max)
#define HWMON_C_LCRIT BIT(hwmon_curr_lcrit)
#define HWMON_C_CRIT BIT(hwmon_curr_crit)
#define HWMON_C_AVERAGE BIT(hwmon_curr_average)
#define HWMON_C_LOWEST BIT(hwmon_curr_lowest)
#define HWMON_C_HIGHEST BIT(hwmon_curr_highest)
#define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history)
#define HWMON_C_LABEL BIT(hwmon_curr_label)
#define HWMON_C_ALARM BIT(hwmon_curr_alarm)
#define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm)
#define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm)
#define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm)
#define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm)
#define HWMON_C_RATED_MIN BIT(hwmon_curr_rated_min)
#define HWMON_C_RATED_MAX BIT(hwmon_curr_rated_max)
enum hwmon_power_attributes {
hwmon_power_enable,
hwmon_power_average,
hwmon_power_average_interval,
hwmon_power_average_interval_max,
hwmon_power_average_interval_min,
hwmon_power_average_highest,
hwmon_power_average_lowest,
hwmon_power_average_max,
hwmon_power_average_min,
hwmon_power_input,
hwmon_power_input_highest,
hwmon_power_input_lowest,
hwmon_power_reset_history,
hwmon_power_accuracy,
hwmon_power_cap,
hwmon_power_cap_hyst,
hwmon_power_cap_max,
hwmon_power_cap_min,
hwmon_power_min,
hwmon_power_max,
hwmon_power_crit,
hwmon_power_lcrit,
hwmon_power_label,
hwmon_power_alarm,
hwmon_power_cap_alarm,
hwmon_power_min_alarm,
hwmon_power_max_alarm,
hwmon_power_lcrit_alarm,
hwmon_power_crit_alarm,
hwmon_power_rated_min,
hwmon_power_rated_max,
};
#define HWMON_P_ENABLE BIT(hwmon_power_enable)
#define HWMON_P_AVERAGE BIT(hwmon_power_average)
#define HWMON_P_AVERAGE_INTERVAL BIT(hwmon_power_average_interval)
#define HWMON_P_AVERAGE_INTERVAL_MAX BIT(hwmon_power_average_interval_max)
#define HWMON_P_AVERAGE_INTERVAL_MIN BIT(hwmon_power_average_interval_min)
#define HWMON_P_AVERAGE_HIGHEST BIT(hwmon_power_average_highest)
#define HWMON_P_AVERAGE_LOWEST BIT(hwmon_power_average_lowest)
#define HWMON_P_AVERAGE_MAX BIT(hwmon_power_average_max)
#define HWMON_P_AVERAGE_MIN BIT(hwmon_power_average_min)
#define HWMON_P_INPUT BIT(hwmon_power_input)
#define HWMON_P_INPUT_HIGHEST BIT(hwmon_power_input_highest)
#define HWMON_P_INPUT_LOWEST BIT(hwmon_power_input_lowest)
#define HWMON_P_RESET_HISTORY BIT(hwmon_power_reset_history)
#define HWMON_P_ACCURACY BIT(hwmon_power_accuracy)
#define HWMON_P_CAP BIT(hwmon_power_cap)
#define HWMON_P_CAP_HYST BIT(hwmon_power_cap_hyst)
#define HWMON_P_CAP_MAX BIT(hwmon_power_cap_max)
#define HWMON_P_CAP_MIN BIT(hwmon_power_cap_min)
#define HWMON_P_MIN BIT(hwmon_power_min)
#define HWMON_P_MAX BIT(hwmon_power_max)
#define HWMON_P_LCRIT BIT(hwmon_power_lcrit)
#define HWMON_P_CRIT BIT(hwmon_power_crit)
#define HWMON_P_LABEL BIT(hwmon_power_label)
#define HWMON_P_ALARM BIT(hwmon_power_alarm)
#define HWMON_P_CAP_ALARM BIT(hwmon_power_cap_alarm)
#define HWMON_P_MIN_ALARM BIT(hwmon_power_min_alarm)
#define HWMON_P_MAX_ALARM BIT(hwmon_power_max_alarm)
#define HWMON_P_LCRIT_ALARM BIT(hwmon_power_lcrit_alarm)
#define HWMON_P_CRIT_ALARM BIT(hwmon_power_crit_alarm)
#define HWMON_P_RATED_MIN BIT(hwmon_power_rated_min)
#define HWMON_P_RATED_MAX BIT(hwmon_power_rated_max)
enum hwmon_energy_attributes {
hwmon_energy_enable,
hwmon_energy_input,
hwmon_energy_label,
};
#define HWMON_E_ENABLE BIT(hwmon_energy_enable)
#define HWMON_E_INPUT BIT(hwmon_energy_input)
#define HWMON_E_LABEL BIT(hwmon_energy_label)
enum hwmon_humidity_attributes {
hwmon_humidity_enable,
hwmon_humidity_input,
hwmon_humidity_label,
hwmon_humidity_min,
hwmon_humidity_min_hyst,
hwmon_humidity_max,
hwmon_humidity_max_hyst,
hwmon_humidity_alarm,
hwmon_humidity_fault,
hwmon_humidity_rated_min,
hwmon_humidity_rated_max,
};
#define HWMON_H_ENABLE BIT(hwmon_humidity_enable)
#define HWMON_H_INPUT BIT(hwmon_humidity_input)
#define HWMON_H_LABEL BIT(hwmon_humidity_label)
#define HWMON_H_MIN BIT(hwmon_humidity_min)
#define HWMON_H_MIN_HYST BIT(hwmon_humidity_min_hyst)
#define HWMON_H_MAX BIT(hwmon_humidity_max)
#define HWMON_H_MAX_HYST BIT(hwmon_humidity_max_hyst)
#define HWMON_H_ALARM BIT(hwmon_humidity_alarm)
#define HWMON_H_FAULT BIT(hwmon_humidity_fault)
#define HWMON_H_RATED_MIN BIT(hwmon_humidity_rated_min)
#define HWMON_H_RATED_MAX BIT(hwmon_humidity_rated_max)
enum hwmon_fan_attributes {
hwmon_fan_enable,
hwmon_fan_input,
hwmon_fan_label,
hwmon_fan_min,
hwmon_fan_max,
hwmon_fan_div,
hwmon_fan_pulses,
hwmon_fan_target,
hwmon_fan_alarm,
hwmon_fan_min_alarm,
hwmon_fan_max_alarm,
hwmon_fan_fault,
};
#define HWMON_F_ENABLE BIT(hwmon_fan_enable)
#define HWMON_F_INPUT BIT(hwmon_fan_input)
#define HWMON_F_LABEL BIT(hwmon_fan_label)
#define HWMON_F_MIN BIT(hwmon_fan_min)
#define HWMON_F_MAX BIT(hwmon_fan_max)
#define HWMON_F_DIV BIT(hwmon_fan_div)
#define HWMON_F_PULSES BIT(hwmon_fan_pulses)
#define HWMON_F_TARGET BIT(hwmon_fan_target)
#define HWMON_F_ALARM BIT(hwmon_fan_alarm)
#define HWMON_F_MIN_ALARM BIT(hwmon_fan_min_alarm)
#define HWMON_F_MAX_ALARM BIT(hwmon_fan_max_alarm)
#define HWMON_F_FAULT BIT(hwmon_fan_fault)
enum hwmon_pwm_attributes {
hwmon_pwm_input,
hwmon_pwm_enable,
hwmon_pwm_mode,
hwmon_pwm_freq,
hwmon_pwm_auto_channels_temp,
};
#define HWMON_PWM_INPUT BIT(hwmon_pwm_input)
#define HWMON_PWM_ENABLE BIT(hwmon_pwm_enable)
#define HWMON_PWM_MODE BIT(hwmon_pwm_mode)
#define HWMON_PWM_FREQ BIT(hwmon_pwm_freq)
#define HWMON_PWM_AUTO_CHANNELS_TEMP BIT(hwmon_pwm_auto_channels_temp)
enum hwmon_intrusion_attributes {
hwmon_intrusion_alarm,
hwmon_intrusion_beep,
};
#define HWMON_INTRUSION_ALARM BIT(hwmon_intrusion_alarm)
#define HWMON_INTRUSION_BEEP BIT(hwmon_intrusion_beep)
/**
* struct hwmon_ops - hwmon device operations
* @is_visible: Callback to return attribute visibility. Mandatory.
* Parameters are:
* @const void *drvdata:
* Pointer to driver-private data structure passed
* as argument to hwmon_device_register_with_info().
* @type: Sensor type
* @attr: Sensor attribute
* @channel:
* Channel number
* The function returns the file permissions.
* If the return value is 0, no attribute will be created.
* @read: Read callback for data attributes. Mandatory if readable
* data attributes are present.
* Parameters are:
* @dev: Pointer to hardware monitoring device
* @type: Sensor type
* @attr: Sensor attribute
* @channel:
* Channel number
* @val: Pointer to returned value
* The function returns 0 on success or a negative error number.
* @read_string:
* Read callback for string attributes. Mandatory if string
* attributes are present.
* Parameters are:
* @dev: Pointer to hardware monitoring device
* @type: Sensor type
* @attr: Sensor attribute
* @channel:
* Channel number
* @str: Pointer to returned string
* The function returns 0 on success or a negative error number.
* @write: Write callback for data attributes. Mandatory if writeable
* data attributes are present.
* Parameters are:
* @dev: Pointer to hardware monitoring device
* @type: Sensor type
* @attr: Sensor attribute
* @channel:
* Channel number
* @val: Value to write
* The function returns 0 on success or a negative error number.
*/
struct hwmon_ops {
umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type,
u32 attr, int channel);
int (*read)(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long *val);
int (*read_string)(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, const char **str);
int (*write)(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long val);
};
/**
* struct hwmon_channel_info - Channel information
* @type: Channel type.
* @config: Pointer to NULL-terminated list of channel parameters.
* Use for per-channel attributes.
*/
struct hwmon_channel_info {
enum hwmon_sensor_types type;
const u32 *config;
};
#define HWMON_CHANNEL_INFO(stype, ...) \
(&(struct hwmon_channel_info) { \
.type = hwmon_##stype, \
.config = (u32 []) { \
__VA_ARGS__, 0 \
} \
})
/**
* struct hwmon_chip_info - Chip configuration
* @ops: Pointer to hwmon operations.
* @info: Null-terminated list of channel information.
*/
struct hwmon_chip_info {
const struct hwmon_ops *ops;
const struct hwmon_channel_info **info;
};
/* hwmon_device_register() is deprecated */
struct device *hwmon_device_register(struct device *dev);
struct device *
hwmon_device_register_with_groups(struct device *dev, const char *name,
void *drvdata,
const struct attribute_group **groups);
struct device *
devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
void *drvdata,
const struct attribute_group **groups);
struct device *
hwmon_device_register_with_info(struct device *dev,
const char *name, void *drvdata,
const struct hwmon_chip_info *info,
const struct attribute_group **extra_groups);
struct device *
hwmon_device_register_for_thermal(struct device *dev, const char *name,
void *drvdata);
struct device *
devm_hwmon_device_register_with_info(struct device *dev,
const char *name, void *drvdata,
const struct hwmon_chip_info *info,
const struct attribute_group **extra_groups);
void hwmon_device_unregister(struct device *dev);
void devm_hwmon_device_unregister(struct device *dev);
int hwmon_notify_event(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel);
char *hwmon_sanitize_name(const char *name);
char *devm_hwmon_sanitize_name(struct device *dev, const char *name);
/**
* hwmon_is_bad_char - Is the char invalid in a hwmon name
* @ch: the char to be considered
*
* hwmon_is_bad_char() can be used to determine if the given character
* may not be used in a hwmon name.
*
* Returns true if the char is invalid, false otherwise.
*/
static inline bool hwmon_is_bad_char(const char ch)
{
switch (ch) {
case '-':
case '*':
case ' ':
case '\t':
case '\n':
return true;
default:
return false;
}
}
#endif
