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1236441f MH |
1 | /* |
2 | hwmon.h - part of lm_sensors, Linux kernel modules for hardware monitoring | |
3 | ||
4 | This file declares helper functions for the sysfs class "hwmon", | |
5 | for use by sensors drivers. | |
6 | ||
7 | Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com> | |
8 | ||
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. | |
12 | */ | |
13 | ||
14 | #ifndef _HWMON_H_ | |
15 | #define _HWMON_H_ | |
16 | ||
d560168b GR |
17 | #include <linux/bitops.h> |
18 | ||
313162d0 | 19 | struct device; |
bab2243c | 20 | struct attribute_group; |
1236441f | 21 | |
d560168b GR |
22 | enum hwmon_sensor_types { |
23 | hwmon_chip, | |
24 | hwmon_temp, | |
25 | hwmon_in, | |
26 | hwmon_curr, | |
27 | hwmon_power, | |
28 | hwmon_energy, | |
6bfcca44 | 29 | hwmon_humidity, |
8faee73f | 30 | hwmon_fan, |
f9f7bb3a | 31 | hwmon_pwm, |
d5753800 | 32 | hwmon_max, |
d560168b GR |
33 | }; |
34 | ||
35 | enum hwmon_chip_attributes { | |
36 | hwmon_chip_temp_reset_history, | |
00d616cf | 37 | hwmon_chip_in_reset_history, |
9b26947c | 38 | hwmon_chip_curr_reset_history, |
b308f5c7 | 39 | hwmon_chip_power_reset_history, |
d560168b GR |
40 | hwmon_chip_register_tz, |
41 | hwmon_chip_update_interval, | |
42 | hwmon_chip_alarms, | |
43 | }; | |
44 | ||
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) | |
9b26947c | 47 | #define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history) |
b308f5c7 | 48 | #define HWMON_C_POWER_RESET_HISTORY BIT(hwmon_chip_power_reset_history) |
d560168b GR |
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) | |
52 | ||
53 | enum hwmon_temp_attributes { | |
54 | hwmon_temp_input = 0, | |
55 | hwmon_temp_type, | |
56 | hwmon_temp_lcrit, | |
57 | hwmon_temp_lcrit_hyst, | |
58 | hwmon_temp_min, | |
59 | hwmon_temp_min_hyst, | |
60 | hwmon_temp_max, | |
61 | hwmon_temp_max_hyst, | |
62 | hwmon_temp_crit, | |
63 | hwmon_temp_crit_hyst, | |
64 | hwmon_temp_emergency, | |
65 | hwmon_temp_emergency_hyst, | |
66 | hwmon_temp_alarm, | |
67 | hwmon_temp_lcrit_alarm, | |
68 | hwmon_temp_min_alarm, | |
69 | hwmon_temp_max_alarm, | |
70 | hwmon_temp_crit_alarm, | |
71 | hwmon_temp_emergency_alarm, | |
72 | hwmon_temp_fault, | |
73 | hwmon_temp_offset, | |
74 | hwmon_temp_label, | |
75 | hwmon_temp_lowest, | |
76 | hwmon_temp_highest, | |
77 | hwmon_temp_reset_history, | |
78 | }; | |
79 | ||
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) | |
a5023a99 | 92 | #define HWMON_T_ALARM BIT(hwmon_temp_alarm) |
d560168b GR |
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) | |
2fe31e43 | 96 | #define HWMON_T_LCRIT_ALARM BIT(hwmon_temp_lcrit_alarm) |
d560168b GR |
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) | |
104 | ||
00d616cf GR |
105 | enum hwmon_in_attributes { |
106 | hwmon_in_input, | |
107 | hwmon_in_min, | |
108 | hwmon_in_max, | |
109 | hwmon_in_lcrit, | |
110 | hwmon_in_crit, | |
111 | hwmon_in_average, | |
112 | hwmon_in_lowest, | |
113 | hwmon_in_highest, | |
114 | hwmon_in_reset_history, | |
115 | hwmon_in_label, | |
116 | hwmon_in_alarm, | |
117 | hwmon_in_min_alarm, | |
118 | hwmon_in_max_alarm, | |
119 | hwmon_in_lcrit_alarm, | |
120 | hwmon_in_crit_alarm, | |
68c0d69d | 121 | hwmon_in_enable, |
00d616cf GR |
122 | }; |
123 | ||
124 | #define HWMON_I_INPUT BIT(hwmon_in_input) | |
125 | #define HWMON_I_MIN BIT(hwmon_in_min) | |
126 | #define HWMON_I_MAX BIT(hwmon_in_max) | |
127 | #define HWMON_I_LCRIT BIT(hwmon_in_lcrit) | |
128 | #define HWMON_I_CRIT BIT(hwmon_in_crit) | |
129 | #define HWMON_I_AVERAGE BIT(hwmon_in_average) | |
130 | #define HWMON_I_LOWEST BIT(hwmon_in_lowest) | |
131 | #define HWMON_I_HIGHEST BIT(hwmon_in_highest) | |
132 | #define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history) | |
133 | #define HWMON_I_LABEL BIT(hwmon_in_label) | |
134 | #define HWMON_I_ALARM BIT(hwmon_in_alarm) | |
135 | #define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm) | |
136 | #define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm) | |
137 | #define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm) | |
138 | #define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm) | |
68c0d69d | 139 | #define HWMON_I_ENABLE BIT(hwmon_in_enable) |
00d616cf | 140 | |
9b26947c GR |
141 | enum hwmon_curr_attributes { |
142 | hwmon_curr_input, | |
143 | hwmon_curr_min, | |
144 | hwmon_curr_max, | |
145 | hwmon_curr_lcrit, | |
146 | hwmon_curr_crit, | |
147 | hwmon_curr_average, | |
148 | hwmon_curr_lowest, | |
149 | hwmon_curr_highest, | |
150 | hwmon_curr_reset_history, | |
151 | hwmon_curr_label, | |
152 | hwmon_curr_alarm, | |
153 | hwmon_curr_min_alarm, | |
154 | hwmon_curr_max_alarm, | |
155 | hwmon_curr_lcrit_alarm, | |
156 | hwmon_curr_crit_alarm, | |
157 | }; | |
158 | ||
159 | #define HWMON_C_INPUT BIT(hwmon_curr_input) | |
160 | #define HWMON_C_MIN BIT(hwmon_curr_min) | |
161 | #define HWMON_C_MAX BIT(hwmon_curr_max) | |
162 | #define HWMON_C_LCRIT BIT(hwmon_curr_lcrit) | |
163 | #define HWMON_C_CRIT BIT(hwmon_curr_crit) | |
164 | #define HWMON_C_AVERAGE BIT(hwmon_curr_average) | |
165 | #define HWMON_C_LOWEST BIT(hwmon_curr_lowest) | |
166 | #define HWMON_C_HIGHEST BIT(hwmon_curr_highest) | |
167 | #define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history) | |
168 | #define HWMON_C_LABEL BIT(hwmon_curr_label) | |
169 | #define HWMON_C_ALARM BIT(hwmon_curr_alarm) | |
170 | #define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm) | |
171 | #define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm) | |
172 | #define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm) | |
173 | #define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm) | |
174 | ||
b308f5c7 GR |
175 | enum hwmon_power_attributes { |
176 | hwmon_power_average, | |
177 | hwmon_power_average_interval, | |
178 | hwmon_power_average_interval_max, | |
179 | hwmon_power_average_interval_min, | |
180 | hwmon_power_average_highest, | |
181 | hwmon_power_average_lowest, | |
182 | hwmon_power_average_max, | |
183 | hwmon_power_average_min, | |
184 | hwmon_power_input, | |
185 | hwmon_power_input_highest, | |
186 | hwmon_power_input_lowest, | |
187 | hwmon_power_reset_history, | |
188 | hwmon_power_accuracy, | |
189 | hwmon_power_cap, | |
190 | hwmon_power_cap_hyst, | |
191 | hwmon_power_cap_max, | |
192 | hwmon_power_cap_min, | |
aa7f29b0 | 193 | hwmon_power_min, |
b308f5c7 GR |
194 | hwmon_power_max, |
195 | hwmon_power_crit, | |
aa7f29b0 | 196 | hwmon_power_lcrit, |
b308f5c7 GR |
197 | hwmon_power_label, |
198 | hwmon_power_alarm, | |
199 | hwmon_power_cap_alarm, | |
aa7f29b0 | 200 | hwmon_power_min_alarm, |
b308f5c7 | 201 | hwmon_power_max_alarm, |
aa7f29b0 | 202 | hwmon_power_lcrit_alarm, |
b308f5c7 GR |
203 | hwmon_power_crit_alarm, |
204 | }; | |
205 | ||
206 | #define HWMON_P_AVERAGE BIT(hwmon_power_average) | |
207 | #define HWMON_P_AVERAGE_INTERVAL BIT(hwmon_power_average_interval) | |
208 | #define HWMON_P_AVERAGE_INTERVAL_MAX BIT(hwmon_power_average_interval_max) | |
209 | #define HWMON_P_AVERAGE_INTERVAL_MIN BIT(hwmon_power_average_interval_min) | |
210 | #define HWMON_P_AVERAGE_HIGHEST BIT(hwmon_power_average_highest) | |
211 | #define HWMON_P_AVERAGE_LOWEST BIT(hwmon_power_average_lowest) | |
212 | #define HWMON_P_AVERAGE_MAX BIT(hwmon_power_average_max) | |
213 | #define HWMON_P_AVERAGE_MIN BIT(hwmon_power_average_min) | |
214 | #define HWMON_P_INPUT BIT(hwmon_power_input) | |
215 | #define HWMON_P_INPUT_HIGHEST BIT(hwmon_power_input_highest) | |
216 | #define HWMON_P_INPUT_LOWEST BIT(hwmon_power_input_lowest) | |
217 | #define HWMON_P_RESET_HISTORY BIT(hwmon_power_reset_history) | |
218 | #define HWMON_P_ACCURACY BIT(hwmon_power_accuracy) | |
219 | #define HWMON_P_CAP BIT(hwmon_power_cap) | |
220 | #define HWMON_P_CAP_HYST BIT(hwmon_power_cap_hyst) | |
221 | #define HWMON_P_CAP_MAX BIT(hwmon_power_cap_max) | |
222 | #define HWMON_P_CAP_MIN BIT(hwmon_power_cap_min) | |
aa7f29b0 | 223 | #define HWMON_P_MIN BIT(hwmon_power_min) |
b308f5c7 | 224 | #define HWMON_P_MAX BIT(hwmon_power_max) |
aa7f29b0 | 225 | #define HWMON_P_LCRIT BIT(hwmon_power_lcrit) |
b308f5c7 GR |
226 | #define HWMON_P_CRIT BIT(hwmon_power_crit) |
227 | #define HWMON_P_LABEL BIT(hwmon_power_label) | |
228 | #define HWMON_P_ALARM BIT(hwmon_power_alarm) | |
229 | #define HWMON_P_CAP_ALARM BIT(hwmon_power_cap_alarm) | |
aa7f29b0 | 230 | #define HWMON_P_MIN_ALARM BIT(hwmon_power_max_alarm) |
b308f5c7 | 231 | #define HWMON_P_MAX_ALARM BIT(hwmon_power_max_alarm) |
aa7f29b0 | 232 | #define HWMON_P_LCRIT_ALARM BIT(hwmon_power_lcrit_alarm) |
b308f5c7 GR |
233 | #define HWMON_P_CRIT_ALARM BIT(hwmon_power_crit_alarm) |
234 | ||
6bfcca44 GR |
235 | enum hwmon_energy_attributes { |
236 | hwmon_energy_input, | |
237 | hwmon_energy_label, | |
238 | }; | |
239 | ||
240 | #define HWMON_E_INPUT BIT(hwmon_energy_input) | |
241 | #define HWMON_E_LABEL BIT(hwmon_energy_label) | |
242 | ||
243 | enum hwmon_humidity_attributes { | |
244 | hwmon_humidity_input, | |
245 | hwmon_humidity_label, | |
246 | hwmon_humidity_min, | |
247 | hwmon_humidity_min_hyst, | |
248 | hwmon_humidity_max, | |
249 | hwmon_humidity_max_hyst, | |
250 | hwmon_humidity_alarm, | |
251 | hwmon_humidity_fault, | |
252 | }; | |
253 | ||
254 | #define HWMON_H_INPUT BIT(hwmon_humidity_input) | |
255 | #define HWMON_H_LABEL BIT(hwmon_humidity_label) | |
256 | #define HWMON_H_MIN BIT(hwmon_humidity_min) | |
257 | #define HWMON_H_MIN_HYST BIT(hwmon_humidity_min_hyst) | |
258 | #define HWMON_H_MAX BIT(hwmon_humidity_max) | |
259 | #define HWMON_H_MAX_HYST BIT(hwmon_humidity_max_hyst) | |
260 | #define HWMON_H_ALARM BIT(hwmon_humidity_alarm) | |
261 | #define HWMON_H_FAULT BIT(hwmon_humidity_fault) | |
262 | ||
8faee73f GR |
263 | enum hwmon_fan_attributes { |
264 | hwmon_fan_input, | |
265 | hwmon_fan_label, | |
266 | hwmon_fan_min, | |
267 | hwmon_fan_max, | |
268 | hwmon_fan_div, | |
269 | hwmon_fan_pulses, | |
270 | hwmon_fan_target, | |
271 | hwmon_fan_alarm, | |
272 | hwmon_fan_min_alarm, | |
273 | hwmon_fan_max_alarm, | |
274 | hwmon_fan_fault, | |
275 | }; | |
276 | ||
277 | #define HWMON_F_INPUT BIT(hwmon_fan_input) | |
278 | #define HWMON_F_LABEL BIT(hwmon_fan_label) | |
279 | #define HWMON_F_MIN BIT(hwmon_fan_min) | |
280 | #define HWMON_F_MAX BIT(hwmon_fan_max) | |
281 | #define HWMON_F_DIV BIT(hwmon_fan_div) | |
282 | #define HWMON_F_PULSES BIT(hwmon_fan_pulses) | |
283 | #define HWMON_F_TARGET BIT(hwmon_fan_target) | |
284 | #define HWMON_F_ALARM BIT(hwmon_fan_alarm) | |
285 | #define HWMON_F_MIN_ALARM BIT(hwmon_fan_min_alarm) | |
286 | #define HWMON_F_MAX_ALARM BIT(hwmon_fan_max_alarm) | |
287 | #define HWMON_F_FAULT BIT(hwmon_fan_fault) | |
288 | ||
f9f7bb3a GR |
289 | enum hwmon_pwm_attributes { |
290 | hwmon_pwm_input, | |
291 | hwmon_pwm_enable, | |
292 | hwmon_pwm_mode, | |
293 | hwmon_pwm_freq, | |
294 | }; | |
295 | ||
296 | #define HWMON_PWM_INPUT BIT(hwmon_pwm_input) | |
297 | #define HWMON_PWM_ENABLE BIT(hwmon_pwm_enable) | |
298 | #define HWMON_PWM_MODE BIT(hwmon_pwm_mode) | |
299 | #define HWMON_PWM_FREQ BIT(hwmon_pwm_freq) | |
300 | ||
d560168b GR |
301 | /** |
302 | * struct hwmon_ops - hwmon device operations | |
303 | * @is_visible: Callback to return attribute visibility. Mandatory. | |
304 | * Parameters are: | |
305 | * @const void *drvdata: | |
306 | * Pointer to driver-private data structure passed | |
307 | * as argument to hwmon_device_register_with_info(). | |
308 | * @type: Sensor type | |
309 | * @attr: Sensor attribute | |
310 | * @channel: | |
311 | * Channel number | |
312 | * The function returns the file permissions. | |
313 | * If the return value is 0, no attribute will be created. | |
e159ab5c GR |
314 | * @read: Read callback for data attributes. Mandatory if readable |
315 | * data attributes are present. | |
d560168b GR |
316 | * Parameters are: |
317 | * @dev: Pointer to hardware monitoring device | |
318 | * @type: Sensor type | |
319 | * @attr: Sensor attribute | |
320 | * @channel: | |
321 | * Channel number | |
322 | * @val: Pointer to returned value | |
323 | * The function returns 0 on success or a negative error number. | |
e159ab5c GR |
324 | * @read_string: |
325 | * Read callback for string attributes. Mandatory if string | |
326 | * attributes are present. | |
327 | * Parameters are: | |
328 | * @dev: Pointer to hardware monitoring device | |
329 | * @type: Sensor type | |
330 | * @attr: Sensor attribute | |
331 | * @channel: | |
332 | * Channel number | |
333 | * @str: Pointer to returned string | |
334 | * The function returns 0 on success or a negative error number. | |
335 | * @write: Write callback for data attributes. Mandatory if writeable | |
336 | * data attributes are present. | |
d560168b GR |
337 | * Parameters are: |
338 | * @dev: Pointer to hardware monitoring device | |
339 | * @type: Sensor type | |
340 | * @attr: Sensor attribute | |
341 | * @channel: | |
342 | * Channel number | |
343 | * @val: Value to write | |
344 | * The function returns 0 on success or a negative error number. | |
345 | */ | |
346 | struct hwmon_ops { | |
347 | umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type, | |
348 | u32 attr, int channel); | |
349 | int (*read)(struct device *dev, enum hwmon_sensor_types type, | |
350 | u32 attr, int channel, long *val); | |
e159ab5c | 351 | int (*read_string)(struct device *dev, enum hwmon_sensor_types type, |
5ba6bcbc | 352 | u32 attr, int channel, const char **str); |
d560168b GR |
353 | int (*write)(struct device *dev, enum hwmon_sensor_types type, |
354 | u32 attr, int channel, long val); | |
355 | }; | |
356 | ||
357 | /** | |
358 | * Channel information | |
359 | * @type: Channel type. | |
360 | * @config: Pointer to NULL-terminated list of channel parameters. | |
361 | * Use for per-channel attributes. | |
362 | */ | |
363 | struct hwmon_channel_info { | |
364 | enum hwmon_sensor_types type; | |
365 | const u32 *config; | |
366 | }; | |
367 | ||
368 | /** | |
369 | * Chip configuration | |
370 | * @ops: Pointer to hwmon operations. | |
371 | * @info: Null-terminated list of channel information. | |
372 | */ | |
373 | struct hwmon_chip_info { | |
374 | const struct hwmon_ops *ops; | |
375 | const struct hwmon_channel_info **info; | |
376 | }; | |
377 | ||
af1bd36c | 378 | /* hwmon_device_register() is deprecated */ |
1beeffe4 | 379 | struct device *hwmon_device_register(struct device *dev); |
af1bd36c | 380 | |
bab2243c GR |
381 | struct device * |
382 | hwmon_device_register_with_groups(struct device *dev, const char *name, | |
383 | void *drvdata, | |
384 | const struct attribute_group **groups); | |
74188cba GR |
385 | struct device * |
386 | devm_hwmon_device_register_with_groups(struct device *dev, const char *name, | |
387 | void *drvdata, | |
388 | const struct attribute_group **groups); | |
d560168b GR |
389 | struct device * |
390 | hwmon_device_register_with_info(struct device *dev, | |
391 | const char *name, void *drvdata, | |
392 | const struct hwmon_chip_info *info, | |
848ba0a2 | 393 | const struct attribute_group **extra_groups); |
d560168b GR |
394 | struct device * |
395 | devm_hwmon_device_register_with_info(struct device *dev, | |
848ba0a2 GR |
396 | const char *name, void *drvdata, |
397 | const struct hwmon_chip_info *info, | |
398 | const struct attribute_group **extra_groups); | |
1236441f | 399 | |
1beeffe4 | 400 | void hwmon_device_unregister(struct device *dev); |
74188cba | 401 | void devm_hwmon_device_unregister(struct device *dev); |
1236441f | 402 | |
dcb5d0fc AL |
403 | /** |
404 | * hwmon_is_bad_char - Is the char invalid in a hwmon name | |
405 | * @ch: the char to be considered | |
406 | * | |
407 | * hwmon_is_bad_char() can be used to determine if the given character | |
408 | * may not be used in a hwmon name. | |
409 | * | |
410 | * Returns true if the char is invalid, false otherwise. | |
411 | */ | |
412 | static inline bool hwmon_is_bad_char(const char ch) | |
413 | { | |
414 | switch (ch) { | |
415 | case '-': | |
416 | case '*': | |
417 | case ' ': | |
418 | case '\t': | |
419 | case '\n': | |
420 | return true; | |
421 | default: | |
422 | return false; | |
423 | } | |
424 | } | |
425 | ||
1236441f | 426 | #endif |