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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, | |
29 | }; | |
30 | ||
31 | enum hwmon_chip_attributes { | |
32 | hwmon_chip_temp_reset_history, | |
00d616cf | 33 | hwmon_chip_in_reset_history, |
9b26947c | 34 | hwmon_chip_curr_reset_history, |
d560168b GR |
35 | hwmon_chip_register_tz, |
36 | hwmon_chip_update_interval, | |
37 | hwmon_chip_alarms, | |
38 | }; | |
39 | ||
40 | #define HWMON_C_TEMP_RESET_HISTORY BIT(hwmon_chip_temp_reset_history) | |
41 | #define HWMON_C_IN_RESET_HISTORY BIT(hwmon_chip_in_reset_history) | |
9b26947c | 42 | #define HWMON_C_CURR_RESET_HISTORY BIT(hwmon_chip_curr_reset_history) |
d560168b GR |
43 | #define HWMON_C_REGISTER_TZ BIT(hwmon_chip_register_tz) |
44 | #define HWMON_C_UPDATE_INTERVAL BIT(hwmon_chip_update_interval) | |
45 | #define HWMON_C_ALARMS BIT(hwmon_chip_alarms) | |
46 | ||
47 | enum hwmon_temp_attributes { | |
48 | hwmon_temp_input = 0, | |
49 | hwmon_temp_type, | |
50 | hwmon_temp_lcrit, | |
51 | hwmon_temp_lcrit_hyst, | |
52 | hwmon_temp_min, | |
53 | hwmon_temp_min_hyst, | |
54 | hwmon_temp_max, | |
55 | hwmon_temp_max_hyst, | |
56 | hwmon_temp_crit, | |
57 | hwmon_temp_crit_hyst, | |
58 | hwmon_temp_emergency, | |
59 | hwmon_temp_emergency_hyst, | |
60 | hwmon_temp_alarm, | |
61 | hwmon_temp_lcrit_alarm, | |
62 | hwmon_temp_min_alarm, | |
63 | hwmon_temp_max_alarm, | |
64 | hwmon_temp_crit_alarm, | |
65 | hwmon_temp_emergency_alarm, | |
66 | hwmon_temp_fault, | |
67 | hwmon_temp_offset, | |
68 | hwmon_temp_label, | |
69 | hwmon_temp_lowest, | |
70 | hwmon_temp_highest, | |
71 | hwmon_temp_reset_history, | |
72 | }; | |
73 | ||
74 | #define HWMON_T_INPUT BIT(hwmon_temp_input) | |
75 | #define HWMON_T_TYPE BIT(hwmon_temp_type) | |
76 | #define HWMON_T_LCRIT BIT(hwmon_temp_lcrit) | |
77 | #define HWMON_T_LCRIT_HYST BIT(hwmon_temp_lcrit_hyst) | |
78 | #define HWMON_T_MIN BIT(hwmon_temp_min) | |
79 | #define HWMON_T_MIN_HYST BIT(hwmon_temp_min_hyst) | |
80 | #define HWMON_T_MAX BIT(hwmon_temp_max) | |
81 | #define HWMON_T_MAX_HYST BIT(hwmon_temp_max_hyst) | |
82 | #define HWMON_T_CRIT BIT(hwmon_temp_crit) | |
83 | #define HWMON_T_CRIT_HYST BIT(hwmon_temp_crit_hyst) | |
84 | #define HWMON_T_EMERGENCY BIT(hwmon_temp_emergency) | |
85 | #define HWMON_T_EMERGENCY_HYST BIT(hwmon_temp_emergency_hyst) | |
86 | #define HWMON_T_MIN_ALARM BIT(hwmon_temp_min_alarm) | |
87 | #define HWMON_T_MAX_ALARM BIT(hwmon_temp_max_alarm) | |
88 | #define HWMON_T_CRIT_ALARM BIT(hwmon_temp_crit_alarm) | |
89 | #define HWMON_T_EMERGENCY_ALARM BIT(hwmon_temp_emergency_alarm) | |
90 | #define HWMON_T_FAULT BIT(hwmon_temp_fault) | |
91 | #define HWMON_T_OFFSET BIT(hwmon_temp_offset) | |
92 | #define HWMON_T_LABEL BIT(hwmon_temp_label) | |
93 | #define HWMON_T_LOWEST BIT(hwmon_temp_lowest) | |
94 | #define HWMON_T_HIGHEST BIT(hwmon_temp_highest) | |
95 | #define HWMON_T_RESET_HISTORY BIT(hwmon_temp_reset_history) | |
96 | ||
00d616cf GR |
97 | enum hwmon_in_attributes { |
98 | hwmon_in_input, | |
99 | hwmon_in_min, | |
100 | hwmon_in_max, | |
101 | hwmon_in_lcrit, | |
102 | hwmon_in_crit, | |
103 | hwmon_in_average, | |
104 | hwmon_in_lowest, | |
105 | hwmon_in_highest, | |
106 | hwmon_in_reset_history, | |
107 | hwmon_in_label, | |
108 | hwmon_in_alarm, | |
109 | hwmon_in_min_alarm, | |
110 | hwmon_in_max_alarm, | |
111 | hwmon_in_lcrit_alarm, | |
112 | hwmon_in_crit_alarm, | |
113 | }; | |
114 | ||
115 | #define HWMON_I_INPUT BIT(hwmon_in_input) | |
116 | #define HWMON_I_MIN BIT(hwmon_in_min) | |
117 | #define HWMON_I_MAX BIT(hwmon_in_max) | |
118 | #define HWMON_I_LCRIT BIT(hwmon_in_lcrit) | |
119 | #define HWMON_I_CRIT BIT(hwmon_in_crit) | |
120 | #define HWMON_I_AVERAGE BIT(hwmon_in_average) | |
121 | #define HWMON_I_LOWEST BIT(hwmon_in_lowest) | |
122 | #define HWMON_I_HIGHEST BIT(hwmon_in_highest) | |
123 | #define HWMON_I_RESET_HISTORY BIT(hwmon_in_reset_history) | |
124 | #define HWMON_I_LABEL BIT(hwmon_in_label) | |
125 | #define HWMON_I_ALARM BIT(hwmon_in_alarm) | |
126 | #define HWMON_I_MIN_ALARM BIT(hwmon_in_min_alarm) | |
127 | #define HWMON_I_MAX_ALARM BIT(hwmon_in_max_alarm) | |
128 | #define HWMON_I_LCRIT_ALARM BIT(hwmon_in_lcrit_alarm) | |
129 | #define HWMON_I_CRIT_ALARM BIT(hwmon_in_crit_alarm) | |
130 | ||
9b26947c GR |
131 | enum hwmon_curr_attributes { |
132 | hwmon_curr_input, | |
133 | hwmon_curr_min, | |
134 | hwmon_curr_max, | |
135 | hwmon_curr_lcrit, | |
136 | hwmon_curr_crit, | |
137 | hwmon_curr_average, | |
138 | hwmon_curr_lowest, | |
139 | hwmon_curr_highest, | |
140 | hwmon_curr_reset_history, | |
141 | hwmon_curr_label, | |
142 | hwmon_curr_alarm, | |
143 | hwmon_curr_min_alarm, | |
144 | hwmon_curr_max_alarm, | |
145 | hwmon_curr_lcrit_alarm, | |
146 | hwmon_curr_crit_alarm, | |
147 | }; | |
148 | ||
149 | #define HWMON_C_INPUT BIT(hwmon_curr_input) | |
150 | #define HWMON_C_MIN BIT(hwmon_curr_min) | |
151 | #define HWMON_C_MAX BIT(hwmon_curr_max) | |
152 | #define HWMON_C_LCRIT BIT(hwmon_curr_lcrit) | |
153 | #define HWMON_C_CRIT BIT(hwmon_curr_crit) | |
154 | #define HWMON_C_AVERAGE BIT(hwmon_curr_average) | |
155 | #define HWMON_C_LOWEST BIT(hwmon_curr_lowest) | |
156 | #define HWMON_C_HIGHEST BIT(hwmon_curr_highest) | |
157 | #define HWMON_C_RESET_HISTORY BIT(hwmon_curr_reset_history) | |
158 | #define HWMON_C_LABEL BIT(hwmon_curr_label) | |
159 | #define HWMON_C_ALARM BIT(hwmon_curr_alarm) | |
160 | #define HWMON_C_MIN_ALARM BIT(hwmon_curr_min_alarm) | |
161 | #define HWMON_C_MAX_ALARM BIT(hwmon_curr_max_alarm) | |
162 | #define HWMON_C_LCRIT_ALARM BIT(hwmon_curr_lcrit_alarm) | |
163 | #define HWMON_C_CRIT_ALARM BIT(hwmon_curr_crit_alarm) | |
164 | ||
d560168b GR |
165 | /** |
166 | * struct hwmon_ops - hwmon device operations | |
167 | * @is_visible: Callback to return attribute visibility. Mandatory. | |
168 | * Parameters are: | |
169 | * @const void *drvdata: | |
170 | * Pointer to driver-private data structure passed | |
171 | * as argument to hwmon_device_register_with_info(). | |
172 | * @type: Sensor type | |
173 | * @attr: Sensor attribute | |
174 | * @channel: | |
175 | * Channel number | |
176 | * The function returns the file permissions. | |
177 | * If the return value is 0, no attribute will be created. | |
178 | * @read: Read callback. Optional. If not provided, attributes | |
179 | * will not be readable. | |
180 | * Parameters are: | |
181 | * @dev: Pointer to hardware monitoring device | |
182 | * @type: Sensor type | |
183 | * @attr: Sensor attribute | |
184 | * @channel: | |
185 | * Channel number | |
186 | * @val: Pointer to returned value | |
187 | * The function returns 0 on success or a negative error number. | |
188 | * @write: Write callback. Optional. If not provided, attributes | |
189 | * will not be writable. | |
190 | * Parameters are: | |
191 | * @dev: Pointer to hardware monitoring device | |
192 | * @type: Sensor type | |
193 | * @attr: Sensor attribute | |
194 | * @channel: | |
195 | * Channel number | |
196 | * @val: Value to write | |
197 | * The function returns 0 on success or a negative error number. | |
198 | */ | |
199 | struct hwmon_ops { | |
200 | umode_t (*is_visible)(const void *drvdata, enum hwmon_sensor_types type, | |
201 | u32 attr, int channel); | |
202 | int (*read)(struct device *dev, enum hwmon_sensor_types type, | |
203 | u32 attr, int channel, long *val); | |
204 | int (*write)(struct device *dev, enum hwmon_sensor_types type, | |
205 | u32 attr, int channel, long val); | |
206 | }; | |
207 | ||
208 | /** | |
209 | * Channel information | |
210 | * @type: Channel type. | |
211 | * @config: Pointer to NULL-terminated list of channel parameters. | |
212 | * Use for per-channel attributes. | |
213 | */ | |
214 | struct hwmon_channel_info { | |
215 | enum hwmon_sensor_types type; | |
216 | const u32 *config; | |
217 | }; | |
218 | ||
219 | /** | |
220 | * Chip configuration | |
221 | * @ops: Pointer to hwmon operations. | |
222 | * @info: Null-terminated list of channel information. | |
223 | */ | |
224 | struct hwmon_chip_info { | |
225 | const struct hwmon_ops *ops; | |
226 | const struct hwmon_channel_info **info; | |
227 | }; | |
228 | ||
1beeffe4 | 229 | struct device *hwmon_device_register(struct device *dev); |
bab2243c GR |
230 | struct device * |
231 | hwmon_device_register_with_groups(struct device *dev, const char *name, | |
232 | void *drvdata, | |
233 | const struct attribute_group **groups); | |
74188cba GR |
234 | struct device * |
235 | devm_hwmon_device_register_with_groups(struct device *dev, const char *name, | |
236 | void *drvdata, | |
237 | const struct attribute_group **groups); | |
d560168b GR |
238 | struct device * |
239 | hwmon_device_register_with_info(struct device *dev, | |
240 | const char *name, void *drvdata, | |
241 | const struct hwmon_chip_info *info, | |
242 | const struct attribute_group **groups); | |
243 | struct device * | |
244 | devm_hwmon_device_register_with_info(struct device *dev, | |
245 | const char *name, void *drvdata, | |
246 | const struct hwmon_chip_info *info, | |
247 | const struct attribute_group **groups); | |
1236441f | 248 | |
1beeffe4 | 249 | void hwmon_device_unregister(struct device *dev); |
74188cba | 250 | void devm_hwmon_device_unregister(struct device *dev); |
1236441f MH |
251 | |
252 | #endif |