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 {
35 enum hwmon_chip_attributes {
36 hwmon_chip_temp_reset_history,
37 hwmon_chip_in_reset_history,
38 hwmon_chip_curr_reset_history,
39 hwmon_chip_power_reset_history,
40 hwmon_chip_register_tz,
41 hwmon_chip_update_interval,
45 #define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history)
46 #define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history)
47 #define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history)
48 #define HWMON_C_POWER_RESET_HISTORY BIT(hwmon_chip_power_reset_history)
49 #define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz)
50 #define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval)
51 #define HWMON_C_ALARMS BIT(hwmon_chip_alarms)
53 enum hwmon_temp_attributes {
57 hwmon_temp_lcrit_hyst,
65 hwmon_temp_emergency_hyst,
67 hwmon_temp_lcrit_alarm,
70 hwmon_temp_crit_alarm,
71 hwmon_temp_emergency_alarm,
77 hwmon_temp_reset_history,
80 #define HWMON_T_INPUT BIT(hwmon_temp_input)
81 #define HWMON_T_TYPE BIT(hwmon_temp_type)
82 #define HWMON_T_LCRIT BIT(hwmon_temp_lcrit)
83 #define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst)
84 #define HWMON_T_MIN BIT(hwmon_temp_min)
85 #define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst)
86 #define HWMON_T_MAX BIT(hwmon_temp_max)
87 #define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst)
88 #define HWMON_T_CRIT BIT(hwmon_temp_crit)
89 #define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst)
90 #define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency)
91 #define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst)
92 #define HWMON_T_ALARM BIT(hwmon_temp_alarm)
93 #define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm)
94 #define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm)
95 #define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm)
96 #define HWMON_T_LCRIT_ALARM BIT(hwmon_temp_lcrit_alarm)
97 #define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm)
98 #define HWMON_T_FAULT BIT(hwmon_temp_fault)
99 #define HWMON_T_OFFSET BIT(hwmon_temp_offset)
100 #define HWMON_T_LABEL BIT(hwmon_temp_label)
101 #define HWMON_T_LOWEST BIT(hwmon_temp_lowest)
102 #define HWMON_T_HIGHEST BIT(hwmon_temp_highest)
103 #define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history)
105 enum hwmon_in_attributes {
114 hwmon_in_reset_history,
119 hwmon_in_lcrit_alarm,
123 #define HWMON_I_INPUT BIT(hwmon_in_input)
124 #define HWMON_I_MIN BIT(hwmon_in_min)
125 #define HWMON_I_MAX BIT(hwmon_in_max)
126 #define HWMON_I_LCRIT BIT(hwmon_in_lcrit)
127 #define HWMON_I_CRIT BIT(hwmon_in_crit)
128 #define HWMON_I_AVERAGE BIT(hwmon_in_average)
129 #define HWMON_I_LOWEST BIT(hwmon_in_lowest)
130 #define HWMON_I_HIGHEST BIT(hwmon_in_highest)
131 #define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history)
132 #define HWMON_I_LABEL BIT(hwmon_in_label)
133 #define HWMON_I_ALARM BIT(hwmon_in_alarm)
134 #define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm)
135 #define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm)
136 #define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm)
137 #define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm)
139 enum hwmon_curr_attributes {
148 hwmon_curr_reset_history,
151 hwmon_curr_min_alarm,
152 hwmon_curr_max_alarm,
153 hwmon_curr_lcrit_alarm,
154 hwmon_curr_crit_alarm,
157 #define HWMON_C_INPUT BIT(hwmon_curr_input)
158 #define HWMON_C_MIN BIT(hwmon_curr_min)
159 #define HWMON_C_MAX BIT(hwmon_curr_max)
160 #define HWMON_C_LCRIT BIT(hwmon_curr_lcrit)
161 #define HWMON_C_CRIT BIT(hwmon_curr_crit)
162 #define HWMON_C_AVERAGE BIT(hwmon_curr_average)
163 #define HWMON_C_LOWEST BIT(hwmon_curr_lowest)
164 #define HWMON_C_HIGHEST BIT(hwmon_curr_highest)
165 #define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history)
166 #define HWMON_C_LABEL BIT(hwmon_curr_label)
167 #define HWMON_C_ALARM BIT(hwmon_curr_alarm)
168 #define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm)
169 #define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm)
170 #define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm)
171 #define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm)
173 enum hwmon_power_attributes {
175 hwmon_power_average_interval,
176 hwmon_power_average_interval_max,
177 hwmon_power_average_interval_min,
178 hwmon_power_average_highest,
179 hwmon_power_average_lowest,
180 hwmon_power_average_max,
181 hwmon_power_average_min,
183 hwmon_power_input_highest,
184 hwmon_power_input_lowest,
185 hwmon_power_reset_history,
186 hwmon_power_accuracy,
188 hwmon_power_cap_hyst,
197 hwmon_power_cap_alarm,
198 hwmon_power_min_alarm,
199 hwmon_power_max_alarm,
200 hwmon_power_lcrit_alarm,
201 hwmon_power_crit_alarm,
204 #define HWMON_P_AVERAGE BIT(hwmon_power_average)
205 #define HWMON_P_AVERAGE_INTERVAL BIT(hwmon_power_average_interval)
206 #define HWMON_P_AVERAGE_INTERVAL_MAX BIT(hwmon_power_average_interval_max)
207 #define HWMON_P_AVERAGE_INTERVAL_MIN BIT(hwmon_power_average_interval_min)
208 #define HWMON_P_AVERAGE_HIGHEST BIT(hwmon_power_average_highest)
209 #define HWMON_P_AVERAGE_LOWEST BIT(hwmon_power_average_lowest)
210 #define HWMON_P_AVERAGE_MAX BIT(hwmon_power_average_max)
211 #define HWMON_P_AVERAGE_MIN BIT(hwmon_power_average_min)
212 #define HWMON_P_INPUT BIT(hwmon_power_input)
213 #define HWMON_P_INPUT_HIGHEST BIT(hwmon_power_input_highest)
214 #define HWMON_P_INPUT_LOWEST BIT(hwmon_power_input_lowest)
215 #define HWMON_P_RESET_HISTORY BIT(hwmon_power_reset_history)
216 #define HWMON_P_ACCURACY BIT(hwmon_power_accuracy)
217 #define HWMON_P_CAP BIT(hwmon_power_cap)
218 #define HWMON_P_CAP_HYST BIT(hwmon_power_cap_hyst)
219 #define HWMON_P_CAP_MAX BIT(hwmon_power_cap_max)
220 #define HWMON_P_CAP_MIN BIT(hwmon_power_cap_min)
221 #define HWMON_P_MIN BIT(hwmon_power_min)
222 #define HWMON_P_MAX BIT(hwmon_power_max)
223 #define HWMON_P_LCRIT BIT(hwmon_power_lcrit)
224 #define HWMON_P_CRIT BIT(hwmon_power_crit)
225 #define HWMON_P_LABEL BIT(hwmon_power_label)
226 #define HWMON_P_ALARM BIT(hwmon_power_alarm)
227 #define HWMON_P_CAP_ALARM BIT(hwmon_power_cap_alarm)
228 #define HWMON_P_MIN_ALARM BIT(hwmon_power_max_alarm)
229 #define HWMON_P_MAX_ALARM BIT(hwmon_power_max_alarm)
230 #define HWMON_P_LCRIT_ALARM BIT(hwmon_power_lcrit_alarm)
231 #define HWMON_P_CRIT_ALARM BIT(hwmon_power_crit_alarm)
233 enum hwmon_energy_attributes {
238 #define HWMON_E_INPUT BIT(hwmon_energy_input)
239 #define HWMON_E_LABEL BIT(hwmon_energy_label)
241 enum hwmon_humidity_attributes {
242 hwmon_humidity_input,
243 hwmon_humidity_label,
245 hwmon_humidity_min_hyst,
247 hwmon_humidity_max_hyst,
248 hwmon_humidity_alarm,
249 hwmon_humidity_fault,
252 #define HWMON_H_INPUT BIT(hwmon_humidity_input)
253 #define HWMON_H_LABEL BIT(hwmon_humidity_label)
254 #define HWMON_H_MIN BIT(hwmon_humidity_min)
255 #define HWMON_H_MIN_HYST BIT(hwmon_humidity_min_hyst)
256 #define HWMON_H_MAX BIT(hwmon_humidity_max)
257 #define HWMON_H_MAX_HYST BIT(hwmon_humidity_max_hyst)
258 #define HWMON_H_ALARM BIT(hwmon_humidity_alarm)
259 #define HWMON_H_FAULT BIT(hwmon_humidity_fault)
261 enum hwmon_fan_attributes {
275 #define HWMON_F_INPUT BIT(hwmon_fan_input)
276 #define HWMON_F_LABEL BIT(hwmon_fan_label)
277 #define HWMON_F_MIN BIT(hwmon_fan_min)
278 #define HWMON_F_MAX BIT(hwmon_fan_max)
279 #define HWMON_F_DIV BIT(hwmon_fan_div)
280 #define HWMON_F_PULSES BIT(hwmon_fan_pulses)
281 #define HWMON_F_TARGET BIT(hwmon_fan_target)
282 #define HWMON_F_ALARM BIT(hwmon_fan_alarm)
283 #define HWMON_F_MIN_ALARM BIT(hwmon_fan_min_alarm)
284 #define HWMON_F_MAX_ALARM BIT(hwmon_fan_max_alarm)
285 #define HWMON_F_FAULT BIT(hwmon_fan_fault)
287 enum hwmon_pwm_attributes {
294 #define HWMON_PWM_INPUT BIT(hwmon_pwm_input)
295 #define HWMON_PWM_ENABLE BIT(hwmon_pwm_enable)
296 #define HWMON_PWM_MODE BIT(hwmon_pwm_mode)
297 #define HWMON_PWM_FREQ BIT(hwmon_pwm_freq)
300 * struct hwmon_ops - hwmon device operations
301 * @is_visible: Callback to return attribute visibility. Mandatory.
303 * @const void *drvdata:
304 * Pointer to driver-private data structure passed
305 * as argument to hwmon_device_register_with_info().
307 * @attr: Sensor attribute
310 * The function returns the file permissions.
311 * If the return value is 0, no attribute will be created.
312 * @read: Read callback for data attributes. Mandatory if readable
313 * data attributes are present.
315 * @dev: Pointer to hardware monitoring device
317 * @attr: Sensor attribute
320 * @val: Pointer to returned value
321 * The function returns 0 on success or a negative error number.
323 * Read callback for string attributes. Mandatory if string
324 * attributes are present.
326 * @dev: Pointer to hardware monitoring device
328 * @attr: Sensor attribute
331 * @str: Pointer to returned string
332 * The function returns 0 on success or a negative error number.
333 * @write: Write callback for data attributes. Mandatory if writeable
334 * data attributes are present.
336 * @dev: Pointer to hardware monitoring device
338 * @attr: Sensor attribute
341 * @val: Value to write
342 * The function returns 0 on success or a negative error number.
345 umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type,
346 u32 attr, int channel);
347 int (*read)(struct device *dev, enum hwmon_sensor_types type,
348 u32 attr, int channel, long *val);
349 int (*read_string)(struct device *dev, enum hwmon_sensor_types type,
350 u32 attr, int channel, const char **str);
351 int (*write)(struct device *dev, enum hwmon_sensor_types type,
352 u32 attr, int channel, long val);
356 * Channel information
357 * @type: Channel type.
358 * @config: Pointer to NULL-terminated list of channel parameters.
359 * Use for per-channel attributes.
361 struct hwmon_channel_info {
362 enum hwmon_sensor_types type;
368 * @ops: Pointer to hwmon operations.
369 * @info: Null-terminated list of channel information.
371 struct hwmon_chip_info {
372 const struct hwmon_ops *ops;
373 const struct hwmon_channel_info **info;
376 /* hwmon_device_register() is deprecated */
377 struct device *hwmon_device_register(struct device *dev);
380 hwmon_device_register_with_groups(struct device *dev, const char *name,
382 const struct attribute_group **groups);
384 devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
386 const struct attribute_group **groups);
388 hwmon_device_register_with_info(struct device *dev,
389 const char *name, void *drvdata,
390 const struct hwmon_chip_info *info,
391 const struct attribute_group **extra_groups);
393 devm_hwmon_device_register_with_info(struct device *dev,
394 const char *name, void *drvdata,
395 const struct hwmon_chip_info *info,
396 const struct attribute_group **extra_groups);
398 void hwmon_device_unregister(struct device *dev);
399 void devm_hwmon_device_unregister(struct device *dev);
402 * hwmon_is_bad_char - Is the char invalid in a hwmon name
403 * @ch: the char to be considered
405 * hwmon_is_bad_char() can be used to determine if the given character
406 * may not be used in a hwmon name.
408 * Returns true if the char is invalid, false otherwise.
410 static inline bool hwmon_is_bad_char(const char ch)