2 hwmon.h - part of lm_sensors, Linux kernel modules for hardware monitoring
4 This file declares helper functions for the sysfs class "hwmon",
5 for use by sensors drivers.
7 Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com>
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
17 #include <linux/bitops.h>
20 struct attribute_group;
22 enum hwmon_sensor_types {
34 enum hwmon_chip_attributes {
35 hwmon_chip_temp_reset_history,
36 hwmon_chip_in_reset_history,
37 hwmon_chip_curr_reset_history,
38 hwmon_chip_power_reset_history,
39 hwmon_chip_register_tz,
40 hwmon_chip_update_interval,
44 #define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history)
45 #define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history)
46 #define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history)
47 #define HWMON_C_POWER_RESET_HISTORY BIT(hwmon_chip_power_reset_history)
48 #define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz)
49 #define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval)
50 #define HWMON_C_ALARMS BIT(hwmon_chip_alarms)
52 enum hwmon_temp_attributes {
56 hwmon_temp_lcrit_hyst,
64 hwmon_temp_emergency_hyst,
66 hwmon_temp_lcrit_alarm,
69 hwmon_temp_crit_alarm,
70 hwmon_temp_emergency_alarm,
76 hwmon_temp_reset_history,
79 #define HWMON_T_INPUT BIT(hwmon_temp_input)
80 #define HWMON_T_TYPE BIT(hwmon_temp_type)
81 #define HWMON_T_LCRIT BIT(hwmon_temp_lcrit)
82 #define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst)
83 #define HWMON_T_MIN BIT(hwmon_temp_min)
84 #define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst)
85 #define HWMON_T_MAX BIT(hwmon_temp_max)
86 #define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst)
87 #define HWMON_T_CRIT BIT(hwmon_temp_crit)
88 #define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst)
89 #define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency)
90 #define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst)
91 #define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm)
92 #define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm)
93 #define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm)
94 #define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm)
95 #define HWMON_T_FAULT BIT(hwmon_temp_fault)
96 #define HWMON_T_OFFSET BIT(hwmon_temp_offset)
97 #define HWMON_T_LABEL BIT(hwmon_temp_label)
98 #define HWMON_T_LOWEST BIT(hwmon_temp_lowest)
99 #define HWMON_T_HIGHEST BIT(hwmon_temp_highest)
100 #define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history)
102 enum hwmon_in_attributes {
111 hwmon_in_reset_history,
116 hwmon_in_lcrit_alarm,
120 #define HWMON_I_INPUT BIT(hwmon_in_input)
121 #define HWMON_I_MIN BIT(hwmon_in_min)
122 #define HWMON_I_MAX BIT(hwmon_in_max)
123 #define HWMON_I_LCRIT BIT(hwmon_in_lcrit)
124 #define HWMON_I_CRIT BIT(hwmon_in_crit)
125 #define HWMON_I_AVERAGE BIT(hwmon_in_average)
126 #define HWMON_I_LOWEST BIT(hwmon_in_lowest)
127 #define HWMON_I_HIGHEST BIT(hwmon_in_highest)
128 #define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history)
129 #define HWMON_I_LABEL BIT(hwmon_in_label)
130 #define HWMON_I_ALARM BIT(hwmon_in_alarm)
131 #define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm)
132 #define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm)
133 #define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm)
134 #define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm)
136 enum hwmon_curr_attributes {
145 hwmon_curr_reset_history,
148 hwmon_curr_min_alarm,
149 hwmon_curr_max_alarm,
150 hwmon_curr_lcrit_alarm,
151 hwmon_curr_crit_alarm,
154 #define HWMON_C_INPUT BIT(hwmon_curr_input)
155 #define HWMON_C_MIN BIT(hwmon_curr_min)
156 #define HWMON_C_MAX BIT(hwmon_curr_max)
157 #define HWMON_C_LCRIT BIT(hwmon_curr_lcrit)
158 #define HWMON_C_CRIT BIT(hwmon_curr_crit)
159 #define HWMON_C_AVERAGE BIT(hwmon_curr_average)
160 #define HWMON_C_LOWEST BIT(hwmon_curr_lowest)
161 #define HWMON_C_HIGHEST BIT(hwmon_curr_highest)
162 #define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history)
163 #define HWMON_C_LABEL BIT(hwmon_curr_label)
164 #define HWMON_C_ALARM BIT(hwmon_curr_alarm)
165 #define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm)
166 #define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm)
167 #define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm)
168 #define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm)
170 enum hwmon_power_attributes {
172 hwmon_power_average_interval,
173 hwmon_power_average_interval_max,
174 hwmon_power_average_interval_min,
175 hwmon_power_average_highest,
176 hwmon_power_average_lowest,
177 hwmon_power_average_max,
178 hwmon_power_average_min,
180 hwmon_power_input_highest,
181 hwmon_power_input_lowest,
182 hwmon_power_reset_history,
183 hwmon_power_accuracy,
185 hwmon_power_cap_hyst,
192 hwmon_power_cap_alarm,
193 hwmon_power_max_alarm,
194 hwmon_power_crit_alarm,
197 #define HWMON_P_AVERAGE BIT(hwmon_power_average)
198 #define HWMON_P_AVERAGE_INTERVAL BIT(hwmon_power_average_interval)
199 #define HWMON_P_AVERAGE_INTERVAL_MAX BIT(hwmon_power_average_interval_max)
200 #define HWMON_P_AVERAGE_INTERVAL_MIN BIT(hwmon_power_average_interval_min)
201 #define HWMON_P_AVERAGE_HIGHEST BIT(hwmon_power_average_highest)
202 #define HWMON_P_AVERAGE_LOWEST BIT(hwmon_power_average_lowest)
203 #define HWMON_P_AVERAGE_MAX BIT(hwmon_power_average_max)
204 #define HWMON_P_AVERAGE_MIN BIT(hwmon_power_average_min)
205 #define HWMON_P_INPUT BIT(hwmon_power_input)
206 #define HWMON_P_INPUT_HIGHEST BIT(hwmon_power_input_highest)
207 #define HWMON_P_INPUT_LOWEST BIT(hwmon_power_input_lowest)
208 #define HWMON_P_RESET_HISTORY BIT(hwmon_power_reset_history)
209 #define HWMON_P_ACCURACY BIT(hwmon_power_accuracy)
210 #define HWMON_P_CAP BIT(hwmon_power_cap)
211 #define HWMON_P_CAP_HYST BIT(hwmon_power_cap_hyst)
212 #define HWMON_P_CAP_MAX BIT(hwmon_power_cap_max)
213 #define HWMON_P_CAP_MIN BIT(hwmon_power_cap_min)
214 #define HWMON_P_MAX BIT(hwmon_power_max)
215 #define HWMON_P_CRIT BIT(hwmon_power_crit)
216 #define HWMON_P_LABEL BIT(hwmon_power_label)
217 #define HWMON_P_ALARM BIT(hwmon_power_alarm)
218 #define HWMON_P_CAP_ALARM BIT(hwmon_power_cap_alarm)
219 #define HWMON_P_MAX_ALARM BIT(hwmon_power_max_alarm)
220 #define HWMON_P_CRIT_ALARM BIT(hwmon_power_crit_alarm)
222 enum hwmon_energy_attributes {
227 #define HWMON_E_INPUT BIT(hwmon_energy_input)
228 #define HWMON_E_LABEL BIT(hwmon_energy_label)
230 enum hwmon_humidity_attributes {
231 hwmon_humidity_input,
232 hwmon_humidity_label,
234 hwmon_humidity_min_hyst,
236 hwmon_humidity_max_hyst,
237 hwmon_humidity_alarm,
238 hwmon_humidity_fault,
241 #define HWMON_H_INPUT BIT(hwmon_humidity_input)
242 #define HWMON_H_LABEL BIT(hwmon_humidity_label)
243 #define HWMON_H_MIN BIT(hwmon_humidity_min)
244 #define HWMON_H_MIN_HYST BIT(hwmon_humidity_min_hyst)
245 #define HWMON_H_MAX BIT(hwmon_humidity_max)
246 #define HWMON_H_MAX_HYST BIT(hwmon_humidity_max_hyst)
247 #define HWMON_H_ALARM BIT(hwmon_humidity_alarm)
248 #define HWMON_H_FAULT BIT(hwmon_humidity_fault)
250 enum hwmon_fan_attributes {
264 #define HWMON_F_INPUT BIT(hwmon_fan_input)
265 #define HWMON_F_LABEL BIT(hwmon_fan_label)
266 #define HWMON_F_MIN BIT(hwmon_fan_min)
267 #define HWMON_F_MAX BIT(hwmon_fan_max)
268 #define HWMON_F_DIV BIT(hwmon_fan_div)
269 #define HWMON_F_PULSES BIT(hwmon_fan_pulses)
270 #define HWMON_F_TARGET BIT(hwmon_fan_target)
271 #define HWMON_F_ALARM BIT(hwmon_fan_alarm)
272 #define HWMON_F_MIN_ALARM BIT(hwmon_fan_min_alarm)
273 #define HWMON_F_MAX_ALARM BIT(hwmon_fan_max_alarm)
274 #define HWMON_F_FAULT BIT(hwmon_fan_fault)
276 enum hwmon_pwm_attributes {
283 #define HWMON_PWM_INPUT BIT(hwmon_pwm_input)
284 #define HWMON_PWM_ENABLE BIT(hwmon_pwm_enable)
285 #define HWMON_PWM_MODE BIT(hwmon_pwm_mode)
286 #define HWMON_PWM_FREQ BIT(hwmon_pwm_freq)
289 * struct hwmon_ops - hwmon device operations
290 * @is_visible: Callback to return attribute visibility. Mandatory.
292 * @const void *drvdata:
293 * Pointer to driver-private data structure passed
294 * as argument to hwmon_device_register_with_info().
296 * @attr: Sensor attribute
299 * The function returns the file permissions.
300 * If the return value is 0, no attribute will be created.
301 * @read: Read callback for data attributes. Mandatory if readable
302 * data attributes are present.
304 * @dev: Pointer to hardware monitoring device
306 * @attr: Sensor attribute
309 * @val: Pointer to returned value
310 * The function returns 0 on success or a negative error number.
312 * Read callback for string attributes. Mandatory if string
313 * attributes are present.
315 * @dev: Pointer to hardware monitoring device
317 * @attr: Sensor attribute
320 * @str: Pointer to returned string
321 * The function returns 0 on success or a negative error number.
322 * @write: Write callback for data attributes. Mandatory if writeable
323 * data attributes are present.
325 * @dev: Pointer to hardware monitoring device
327 * @attr: Sensor attribute
330 * @val: Value to write
331 * The function returns 0 on success or a negative error number.
334 umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type,
335 u32 attr, int channel);
336 int (*read)(struct device *dev, enum hwmon_sensor_types type,
337 u32 attr, int channel, long *val);
338 int (*read_string)(struct device *dev, enum hwmon_sensor_types type,
339 u32 attr, int channel, char **str);
340 int (*write)(struct device *dev, enum hwmon_sensor_types type,
341 u32 attr, int channel, long val);
345 * Channel information
346 * @type: Channel type.
347 * @config: Pointer to NULL-terminated list of channel parameters.
348 * Use for per-channel attributes.
350 struct hwmon_channel_info {
351 enum hwmon_sensor_types type;
357 * @ops: Pointer to hwmon operations.
358 * @info: Null-terminated list of channel information.
360 struct hwmon_chip_info {
361 const struct hwmon_ops *ops;
362 const struct hwmon_channel_info **info;
365 /* hwmon_device_register() is deprecated */
366 struct device *hwmon_device_register(struct device *dev);
369 hwmon_device_register_with_groups(struct device *dev, const char *name,
371 const struct attribute_group **groups);
373 devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
375 const struct attribute_group **groups);
377 hwmon_device_register_with_info(struct device *dev,
378 const char *name, void *drvdata,
379 const struct hwmon_chip_info *info,
380 const struct attribute_group **extra_groups);
382 devm_hwmon_device_register_with_info(struct device *dev,
383 const char *name, void *drvdata,
384 const struct hwmon_chip_info *info,
385 const struct attribute_group **extra_groups);
387 void hwmon_device_unregister(struct device *dev);
388 void devm_hwmon_device_unregister(struct device *dev);