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f680b28456
The callback descrption in hwmon.h was misleading and stated that read and write callbacks would be optional. More accurate is is that the callbacks are mandatory if readable / writeable attributes are present. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
374 lines
12 KiB
C
374 lines
12 KiB
C
/*
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hwmon.h - part of lm_sensors, Linux kernel modules for hardware monitoring
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This file declares helper functions for the sysfs class "hwmon",
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for use by sensors drivers.
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Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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*/
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#ifndef _HWMON_H_
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#define _HWMON_H_
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#include <linux/bitops.h>
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struct device;
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struct attribute_group;
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enum hwmon_sensor_types {
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hwmon_chip,
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hwmon_temp,
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hwmon_in,
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hwmon_curr,
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hwmon_power,
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hwmon_energy,
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hwmon_humidity,
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hwmon_fan,
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hwmon_pwm,
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};
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enum hwmon_chip_attributes {
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hwmon_chip_temp_reset_history,
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hwmon_chip_in_reset_history,
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hwmon_chip_curr_reset_history,
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hwmon_chip_power_reset_history,
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hwmon_chip_register_tz,
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hwmon_chip_update_interval,
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hwmon_chip_alarms,
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};
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#define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history)
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#define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history)
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#define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history)
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#define HWMON_C_POWER_RESET_HISTORY BIT(hwmon_chip_power_reset_history)
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#define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz)
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#define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval)
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#define HWMON_C_ALARMS BIT(hwmon_chip_alarms)
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enum hwmon_temp_attributes {
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hwmon_temp_input = 0,
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hwmon_temp_type,
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hwmon_temp_lcrit,
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hwmon_temp_lcrit_hyst,
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hwmon_temp_min,
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hwmon_temp_min_hyst,
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hwmon_temp_max,
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hwmon_temp_max_hyst,
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hwmon_temp_crit,
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hwmon_temp_crit_hyst,
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hwmon_temp_emergency,
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hwmon_temp_emergency_hyst,
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hwmon_temp_alarm,
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hwmon_temp_lcrit_alarm,
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hwmon_temp_min_alarm,
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hwmon_temp_max_alarm,
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hwmon_temp_crit_alarm,
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hwmon_temp_emergency_alarm,
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hwmon_temp_fault,
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hwmon_temp_offset,
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hwmon_temp_label,
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hwmon_temp_lowest,
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hwmon_temp_highest,
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hwmon_temp_reset_history,
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};
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#define HWMON_T_INPUT BIT(hwmon_temp_input)
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#define HWMON_T_TYPE BIT(hwmon_temp_type)
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#define HWMON_T_LCRIT BIT(hwmon_temp_lcrit)
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#define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst)
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#define HWMON_T_MIN BIT(hwmon_temp_min)
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#define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst)
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#define HWMON_T_MAX BIT(hwmon_temp_max)
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#define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst)
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#define HWMON_T_CRIT BIT(hwmon_temp_crit)
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#define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst)
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#define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency)
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#define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst)
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#define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm)
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#define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm)
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#define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm)
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#define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm)
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#define HWMON_T_FAULT BIT(hwmon_temp_fault)
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#define HWMON_T_OFFSET BIT(hwmon_temp_offset)
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#define HWMON_T_LABEL BIT(hwmon_temp_label)
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#define HWMON_T_LOWEST BIT(hwmon_temp_lowest)
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#define HWMON_T_HIGHEST BIT(hwmon_temp_highest)
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#define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history)
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enum hwmon_in_attributes {
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hwmon_in_input,
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hwmon_in_min,
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hwmon_in_max,
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hwmon_in_lcrit,
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hwmon_in_crit,
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hwmon_in_average,
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hwmon_in_lowest,
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hwmon_in_highest,
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hwmon_in_reset_history,
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hwmon_in_label,
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hwmon_in_alarm,
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hwmon_in_min_alarm,
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hwmon_in_max_alarm,
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hwmon_in_lcrit_alarm,
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hwmon_in_crit_alarm,
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};
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#define HWMON_I_INPUT BIT(hwmon_in_input)
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#define HWMON_I_MIN BIT(hwmon_in_min)
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#define HWMON_I_MAX BIT(hwmon_in_max)
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#define HWMON_I_LCRIT BIT(hwmon_in_lcrit)
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#define HWMON_I_CRIT BIT(hwmon_in_crit)
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#define HWMON_I_AVERAGE BIT(hwmon_in_average)
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#define HWMON_I_LOWEST BIT(hwmon_in_lowest)
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#define HWMON_I_HIGHEST BIT(hwmon_in_highest)
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#define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history)
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#define HWMON_I_LABEL BIT(hwmon_in_label)
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#define HWMON_I_ALARM BIT(hwmon_in_alarm)
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#define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm)
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#define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm)
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#define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm)
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#define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm)
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enum hwmon_curr_attributes {
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hwmon_curr_input,
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hwmon_curr_min,
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hwmon_curr_max,
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hwmon_curr_lcrit,
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hwmon_curr_crit,
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hwmon_curr_average,
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hwmon_curr_lowest,
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hwmon_curr_highest,
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hwmon_curr_reset_history,
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hwmon_curr_label,
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hwmon_curr_alarm,
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hwmon_curr_min_alarm,
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hwmon_curr_max_alarm,
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hwmon_curr_lcrit_alarm,
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hwmon_curr_crit_alarm,
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};
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#define HWMON_C_INPUT BIT(hwmon_curr_input)
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#define HWMON_C_MIN BIT(hwmon_curr_min)
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#define HWMON_C_MAX BIT(hwmon_curr_max)
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#define HWMON_C_LCRIT BIT(hwmon_curr_lcrit)
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#define HWMON_C_CRIT BIT(hwmon_curr_crit)
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#define HWMON_C_AVERAGE BIT(hwmon_curr_average)
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#define HWMON_C_LOWEST BIT(hwmon_curr_lowest)
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#define HWMON_C_HIGHEST BIT(hwmon_curr_highest)
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#define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history)
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#define HWMON_C_LABEL BIT(hwmon_curr_label)
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#define HWMON_C_ALARM BIT(hwmon_curr_alarm)
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#define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm)
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#define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm)
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#define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm)
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#define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm)
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enum hwmon_power_attributes {
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hwmon_power_average,
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hwmon_power_average_interval,
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hwmon_power_average_interval_max,
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hwmon_power_average_interval_min,
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hwmon_power_average_highest,
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hwmon_power_average_lowest,
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hwmon_power_average_max,
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hwmon_power_average_min,
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hwmon_power_input,
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hwmon_power_input_highest,
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hwmon_power_input_lowest,
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hwmon_power_reset_history,
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hwmon_power_accuracy,
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hwmon_power_cap,
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hwmon_power_cap_hyst,
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hwmon_power_cap_max,
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hwmon_power_cap_min,
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hwmon_power_max,
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hwmon_power_crit,
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hwmon_power_label,
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hwmon_power_alarm,
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hwmon_power_cap_alarm,
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hwmon_power_max_alarm,
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hwmon_power_crit_alarm,
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};
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#define HWMON_P_AVERAGE BIT(hwmon_power_average)
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#define HWMON_P_AVERAGE_INTERVAL BIT(hwmon_power_average_interval)
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#define HWMON_P_AVERAGE_INTERVAL_MAX BIT(hwmon_power_average_interval_max)
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#define HWMON_P_AVERAGE_INTERVAL_MIN BIT(hwmon_power_average_interval_min)
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#define HWMON_P_AVERAGE_HIGHEST BIT(hwmon_power_average_highest)
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#define HWMON_P_AVERAGE_LOWEST BIT(hwmon_power_average_lowest)
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#define HWMON_P_AVERAGE_MAX BIT(hwmon_power_average_max)
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#define HWMON_P_AVERAGE_MIN BIT(hwmon_power_average_min)
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#define HWMON_P_INPUT BIT(hwmon_power_input)
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#define HWMON_P_INPUT_HIGHEST BIT(hwmon_power_input_highest)
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#define HWMON_P_INPUT_LOWEST BIT(hwmon_power_input_lowest)
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#define HWMON_P_RESET_HISTORY BIT(hwmon_power_reset_history)
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#define HWMON_P_ACCURACY BIT(hwmon_power_accuracy)
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#define HWMON_P_CAP BIT(hwmon_power_cap)
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#define HWMON_P_CAP_HYST BIT(hwmon_power_cap_hyst)
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#define HWMON_P_CAP_MAX BIT(hwmon_power_cap_max)
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#define HWMON_P_CAP_MIN BIT(hwmon_power_cap_min)
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#define HWMON_P_MAX BIT(hwmon_power_max)
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#define HWMON_P_CRIT BIT(hwmon_power_crit)
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#define HWMON_P_LABEL BIT(hwmon_power_label)
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#define HWMON_P_ALARM BIT(hwmon_power_alarm)
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#define HWMON_P_CAP_ALARM BIT(hwmon_power_cap_alarm)
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#define HWMON_P_MAX_ALARM BIT(hwmon_power_max_alarm)
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#define HWMON_P_CRIT_ALARM BIT(hwmon_power_crit_alarm)
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enum hwmon_energy_attributes {
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hwmon_energy_input,
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hwmon_energy_label,
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};
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#define HWMON_E_INPUT BIT(hwmon_energy_input)
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#define HWMON_E_LABEL BIT(hwmon_energy_label)
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enum hwmon_humidity_attributes {
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hwmon_humidity_input,
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hwmon_humidity_label,
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hwmon_humidity_min,
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hwmon_humidity_min_hyst,
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hwmon_humidity_max,
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hwmon_humidity_max_hyst,
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hwmon_humidity_alarm,
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hwmon_humidity_fault,
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};
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#define HWMON_H_INPUT BIT(hwmon_humidity_input)
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#define HWMON_H_LABEL BIT(hwmon_humidity_label)
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#define HWMON_H_MIN BIT(hwmon_humidity_min)
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#define HWMON_H_MIN_HYST BIT(hwmon_humidity_min_hyst)
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#define HWMON_H_MAX BIT(hwmon_humidity_max)
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#define HWMON_H_MAX_HYST BIT(hwmon_humidity_max_hyst)
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#define HWMON_H_ALARM BIT(hwmon_humidity_alarm)
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#define HWMON_H_FAULT BIT(hwmon_humidity_fault)
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enum hwmon_fan_attributes {
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hwmon_fan_input,
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hwmon_fan_label,
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hwmon_fan_min,
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hwmon_fan_max,
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hwmon_fan_div,
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hwmon_fan_pulses,
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hwmon_fan_target,
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hwmon_fan_alarm,
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hwmon_fan_min_alarm,
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hwmon_fan_max_alarm,
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hwmon_fan_fault,
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};
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#define HWMON_F_INPUT BIT(hwmon_fan_input)
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#define HWMON_F_LABEL BIT(hwmon_fan_label)
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#define HWMON_F_MIN BIT(hwmon_fan_min)
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#define HWMON_F_MAX BIT(hwmon_fan_max)
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#define HWMON_F_DIV BIT(hwmon_fan_div)
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#define HWMON_F_PULSES BIT(hwmon_fan_pulses)
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#define HWMON_F_TARGET BIT(hwmon_fan_target)
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#define HWMON_F_ALARM BIT(hwmon_fan_alarm)
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#define HWMON_F_MIN_ALARM BIT(hwmon_fan_min_alarm)
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#define HWMON_F_MAX_ALARM BIT(hwmon_fan_max_alarm)
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#define HWMON_F_FAULT BIT(hwmon_fan_fault)
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enum hwmon_pwm_attributes {
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hwmon_pwm_input,
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hwmon_pwm_enable,
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hwmon_pwm_mode,
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hwmon_pwm_freq,
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};
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#define HWMON_PWM_INPUT BIT(hwmon_pwm_input)
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#define HWMON_PWM_ENABLE BIT(hwmon_pwm_enable)
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#define HWMON_PWM_MODE BIT(hwmon_pwm_mode)
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#define HWMON_PWM_FREQ BIT(hwmon_pwm_freq)
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/**
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* struct hwmon_ops - hwmon device operations
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* @is_visible: Callback to return attribute visibility. Mandatory.
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* Parameters are:
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* @const void *drvdata:
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* Pointer to driver-private data structure passed
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* as argument to hwmon_device_register_with_info().
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* @type: Sensor type
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* @attr: Sensor attribute
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* @channel:
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* Channel number
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* The function returns the file permissions.
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* If the return value is 0, no attribute will be created.
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* @read: Read callback. Mandatory if readable attributes are present.
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* Parameters are:
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* @dev: Pointer to hardware monitoring device
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* @type: Sensor type
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* @attr: Sensor attribute
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* @channel:
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* Channel number
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* @val: Pointer to returned value
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* The function returns 0 on success or a negative error number.
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* @write: Write callback. Mandatory if writeable attributes are present.
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* Parameters are:
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* @dev: Pointer to hardware monitoring device
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* @type: Sensor type
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* @attr: Sensor attribute
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* @channel:
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* Channel number
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* @val: Value to write
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* The function returns 0 on success or a negative error number.
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*/
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struct hwmon_ops {
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umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type,
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u32 attr, int channel);
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int (*read)(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long *val);
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int (*write)(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long val);
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};
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/**
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* Channel information
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* @type: Channel type.
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* @config: Pointer to NULL-terminated list of channel parameters.
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* Use for per-channel attributes.
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*/
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struct hwmon_channel_info {
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enum hwmon_sensor_types type;
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const u32 *config;
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};
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/**
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* Chip configuration
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* @ops: Pointer to hwmon operations.
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* @info: Null-terminated list of channel information.
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*/
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struct hwmon_chip_info {
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const struct hwmon_ops *ops;
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const struct hwmon_channel_info **info;
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};
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struct device *hwmon_device_register(struct device *dev);
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struct device *
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hwmon_device_register_with_groups(struct device *dev, const char *name,
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void *drvdata,
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const struct attribute_group **groups);
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struct device *
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devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
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void *drvdata,
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const struct attribute_group **groups);
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struct device *
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hwmon_device_register_with_info(struct device *dev,
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const char *name, void *drvdata,
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const struct hwmon_chip_info *info,
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const struct attribute_group **groups);
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struct device *
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devm_hwmon_device_register_with_info(struct device *dev,
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const char *name, void *drvdata,
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const struct hwmon_chip_info *info,
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const struct attribute_group **groups);
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void hwmon_device_unregister(struct device *dev);
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void devm_hwmon_device_unregister(struct device *dev);
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#endif
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