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1 | /* | |
2 | * thermal.h ($Revision: 0 $) | |
3 | * | |
4 | * Copyright (C) 2008 Intel Corp | |
5 | * Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com> | |
6 | * Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com> | |
7 | * | |
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 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
21 | * | |
22 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
23 | */ | |
24 | ||
25 | #ifndef __THERMAL_H__ | |
26 | #define __THERMAL_H__ | |
27 | ||
28 | #include <linux/of.h> | |
29 | #include <linux/idr.h> | |
30 | #include <linux/device.h> | |
31 | #include <linux/workqueue.h> | |
32 | #include <uapi/linux/thermal.h> | |
33 | ||
34 | #define THERMAL_TRIPS_NONE -1 | |
35 | #define THERMAL_MAX_TRIPS 12 | |
36 | ||
37 | /* invalid cooling state */ | |
38 | #define THERMAL_CSTATE_INVALID -1UL | |
39 | ||
40 | /* No upper/lower limit requirement */ | |
41 | #define THERMAL_NO_LIMIT ((u32)~0) | |
42 | ||
43 | /* Default weight of a bound cooling device */ | |
44 | #define THERMAL_WEIGHT_DEFAULT 0 | |
45 | ||
46 | /* use value, which < 0K, to indicate an invalid/uninitialized temperature */ | |
47 | #define THERMAL_TEMP_INVALID -274000 | |
48 | ||
49 | /* Unit conversion macros */ | |
50 | #define DECI_KELVIN_TO_CELSIUS(t) ({ \ | |
51 | long _t = (t); \ | |
52 | ((_t-2732 >= 0) ? (_t-2732+5)/10 : (_t-2732-5)/10); \ | |
53 | }) | |
54 | #define CELSIUS_TO_DECI_KELVIN(t) ((t)*10+2732) | |
55 | #define DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, off) (((t) - (off)) * 100) | |
56 | #define DECI_KELVIN_TO_MILLICELSIUS(t) DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, 2732) | |
57 | #define MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, off) (((t) / 100) + (off)) | |
58 | #define MILLICELSIUS_TO_DECI_KELVIN(t) MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, 2732) | |
59 | ||
60 | /* Default Thermal Governor */ | |
61 | #if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE) | |
62 | #define DEFAULT_THERMAL_GOVERNOR "step_wise" | |
63 | #elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE) | |
64 | #define DEFAULT_THERMAL_GOVERNOR "fair_share" | |
65 | #elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE) | |
66 | #define DEFAULT_THERMAL_GOVERNOR "user_space" | |
67 | #elif defined(CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR) | |
68 | #define DEFAULT_THERMAL_GOVERNOR "power_allocator" | |
69 | #endif | |
70 | ||
71 | struct thermal_zone_device; | |
72 | struct thermal_cooling_device; | |
73 | struct thermal_instance; | |
74 | ||
75 | enum thermal_device_mode { | |
76 | THERMAL_DEVICE_DISABLED = 0, | |
77 | THERMAL_DEVICE_ENABLED, | |
78 | }; | |
79 | ||
80 | enum thermal_trip_type { | |
81 | THERMAL_TRIP_ACTIVE = 0, | |
82 | THERMAL_TRIP_PASSIVE, | |
83 | THERMAL_TRIP_HOT, | |
84 | THERMAL_TRIP_CRITICAL, | |
85 | }; | |
86 | ||
87 | enum thermal_trend { | |
88 | THERMAL_TREND_STABLE, /* temperature is stable */ | |
89 | THERMAL_TREND_RAISING, /* temperature is raising */ | |
90 | THERMAL_TREND_DROPPING, /* temperature is dropping */ | |
91 | THERMAL_TREND_RAISE_FULL, /* apply highest cooling action */ | |
92 | THERMAL_TREND_DROP_FULL, /* apply lowest cooling action */ | |
93 | }; | |
94 | ||
95 | struct thermal_zone_device_ops { | |
96 | int (*bind) (struct thermal_zone_device *, | |
97 | struct thermal_cooling_device *); | |
98 | int (*unbind) (struct thermal_zone_device *, | |
99 | struct thermal_cooling_device *); | |
100 | int (*get_temp) (struct thermal_zone_device *, int *); | |
101 | int (*get_mode) (struct thermal_zone_device *, | |
102 | enum thermal_device_mode *); | |
103 | int (*set_mode) (struct thermal_zone_device *, | |
104 | enum thermal_device_mode); | |
105 | int (*get_trip_type) (struct thermal_zone_device *, int, | |
106 | enum thermal_trip_type *); | |
107 | int (*get_trip_temp) (struct thermal_zone_device *, int, int *); | |
108 | int (*set_trip_temp) (struct thermal_zone_device *, int, int); | |
109 | int (*get_trip_hyst) (struct thermal_zone_device *, int, int *); | |
110 | int (*set_trip_hyst) (struct thermal_zone_device *, int, int); | |
111 | int (*get_crit_temp) (struct thermal_zone_device *, int *); | |
112 | int (*set_emul_temp) (struct thermal_zone_device *, int); | |
113 | int (*get_trend) (struct thermal_zone_device *, int, | |
114 | enum thermal_trend *); | |
115 | int (*notify) (struct thermal_zone_device *, int, | |
116 | enum thermal_trip_type); | |
117 | }; | |
118 | ||
119 | struct thermal_cooling_device_ops { | |
120 | int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); | |
121 | int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); | |
122 | int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); | |
123 | int (*get_requested_power)(struct thermal_cooling_device *, | |
124 | struct thermal_zone_device *, u32 *); | |
125 | int (*state2power)(struct thermal_cooling_device *, | |
126 | struct thermal_zone_device *, unsigned long, u32 *); | |
127 | int (*power2state)(struct thermal_cooling_device *, | |
128 | struct thermal_zone_device *, u32, unsigned long *); | |
129 | }; | |
130 | ||
131 | struct thermal_cooling_device { | |
132 | int id; | |
133 | char type[THERMAL_NAME_LENGTH]; | |
134 | struct device device; | |
135 | struct device_node *np; | |
136 | void *devdata; | |
137 | const struct thermal_cooling_device_ops *ops; | |
138 | bool updated; /* true if the cooling device does not need update */ | |
139 | struct mutex lock; /* protect thermal_instances list */ | |
140 | struct list_head thermal_instances; | |
141 | struct list_head node; | |
142 | }; | |
143 | ||
144 | struct thermal_attr { | |
145 | struct device_attribute attr; | |
146 | char name[THERMAL_NAME_LENGTH]; | |
147 | }; | |
148 | ||
149 | /** | |
150 | * struct thermal_zone_device - structure for a thermal zone | |
151 | * @id: unique id number for each thermal zone | |
152 | * @type: the thermal zone device type | |
153 | * @device: &struct device for this thermal zone | |
154 | * @trip_temp_attrs: attributes for trip points for sysfs: trip temperature | |
155 | * @trip_type_attrs: attributes for trip points for sysfs: trip type | |
156 | * @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis | |
157 | * @devdata: private pointer for device private data | |
158 | * @trips: number of trip points the thermal zone supports | |
159 | * @trips_disabled; bitmap for disabled trips | |
160 | * @passive_delay: number of milliseconds to wait between polls when | |
161 | * performing passive cooling. | |
162 | * @polling_delay: number of milliseconds to wait between polls when | |
163 | * checking whether trip points have been crossed (0 for | |
164 | * interrupt driven systems) | |
165 | * @temperature: current temperature. This is only for core code, | |
166 | * drivers should use thermal_zone_get_temp() to get the | |
167 | * current temperature | |
168 | * @last_temperature: previous temperature read | |
169 | * @emul_temperature: emulated temperature when using CONFIG_THERMAL_EMULATION | |
170 | * @passive: 1 if you've crossed a passive trip point, 0 otherwise. | |
171 | * @forced_passive: If > 0, temperature at which to switch on all ACPI | |
172 | * processor cooling devices. Currently only used by the | |
173 | * step-wise governor. | |
174 | * @need_update: if equals 1, thermal_zone_device_update needs to be invoked. | |
175 | * @ops: operations this &thermal_zone_device supports | |
176 | * @tzp: thermal zone parameters | |
177 | * @governor: pointer to the governor for this thermal zone | |
178 | * @governor_data: private pointer for governor data | |
179 | * @thermal_instances: list of &struct thermal_instance of this thermal zone | |
180 | * @idr: &struct idr to generate unique id for this zone's cooling | |
181 | * devices | |
182 | * @lock: lock to protect thermal_instances list | |
183 | * @node: node in thermal_tz_list (in thermal_core.c) | |
184 | * @poll_queue: delayed work for polling | |
185 | */ | |
186 | struct thermal_zone_device { | |
187 | int id; | |
188 | char type[THERMAL_NAME_LENGTH]; | |
189 | struct device device; | |
190 | struct thermal_attr *trip_temp_attrs; | |
191 | struct thermal_attr *trip_type_attrs; | |
192 | struct thermal_attr *trip_hyst_attrs; | |
193 | void *devdata; | |
194 | int trips; | |
195 | unsigned long trips_disabled; /* bitmap for disabled trips */ | |
196 | int passive_delay; | |
197 | int polling_delay; | |
198 | int temperature; | |
199 | int last_temperature; | |
200 | int emul_temperature; | |
201 | int passive; | |
202 | unsigned int forced_passive; | |
203 | atomic_t need_update; | |
204 | struct thermal_zone_device_ops *ops; | |
205 | struct thermal_zone_params *tzp; | |
206 | struct thermal_governor *governor; | |
207 | void *governor_data; | |
208 | struct list_head thermal_instances; | |
209 | struct idr idr; | |
210 | struct mutex lock; | |
211 | struct list_head node; | |
212 | struct delayed_work poll_queue; | |
213 | }; | |
214 | ||
215 | /** | |
216 | * struct thermal_governor - structure that holds thermal governor information | |
217 | * @name: name of the governor | |
218 | * @bind_to_tz: callback called when binding to a thermal zone. If it | |
219 | * returns 0, the governor is bound to the thermal zone, | |
220 | * otherwise it fails. | |
221 | * @unbind_from_tz: callback called when a governor is unbound from a | |
222 | * thermal zone. | |
223 | * @throttle: callback called for every trip point even if temperature is | |
224 | * below the trip point temperature | |
225 | * @governor_list: node in thermal_governor_list (in thermal_core.c) | |
226 | */ | |
227 | struct thermal_governor { | |
228 | char name[THERMAL_NAME_LENGTH]; | |
229 | int (*bind_to_tz)(struct thermal_zone_device *tz); | |
230 | void (*unbind_from_tz)(struct thermal_zone_device *tz); | |
231 | int (*throttle)(struct thermal_zone_device *tz, int trip); | |
232 | struct list_head governor_list; | |
233 | }; | |
234 | ||
235 | /* Structure that holds binding parameters for a zone */ | |
236 | struct thermal_bind_params { | |
237 | struct thermal_cooling_device *cdev; | |
238 | ||
239 | /* | |
240 | * This is a measure of 'how effectively these devices can | |
241 | * cool 'this' thermal zone. It shall be determined by | |
242 | * platform characterization. This value is relative to the | |
243 | * rest of the weights so a cooling device whose weight is | |
244 | * double that of another cooling device is twice as | |
245 | * effective. See Documentation/thermal/sysfs-api.txt for more | |
246 | * information. | |
247 | */ | |
248 | int weight; | |
249 | ||
250 | /* | |
251 | * This is a bit mask that gives the binding relation between this | |
252 | * thermal zone and cdev, for a particular trip point. | |
253 | * See Documentation/thermal/sysfs-api.txt for more information. | |
254 | */ | |
255 | int trip_mask; | |
256 | ||
257 | /* | |
258 | * This is an array of cooling state limits. Must have exactly | |
259 | * 2 * thermal_zone.number_of_trip_points. It is an array consisting | |
260 | * of tuples <lower-state upper-state> of state limits. Each trip | |
261 | * will be associated with one state limit tuple when binding. | |
262 | * A NULL pointer means <THERMAL_NO_LIMITS THERMAL_NO_LIMITS> | |
263 | * on all trips. | |
264 | */ | |
265 | unsigned long *binding_limits; | |
266 | int (*match) (struct thermal_zone_device *tz, | |
267 | struct thermal_cooling_device *cdev); | |
268 | }; | |
269 | ||
270 | /* Structure to define Thermal Zone parameters */ | |
271 | struct thermal_zone_params { | |
272 | char governor_name[THERMAL_NAME_LENGTH]; | |
273 | ||
274 | /* | |
275 | * a boolean to indicate if the thermal to hwmon sysfs interface | |
276 | * is required. when no_hwmon == false, a hwmon sysfs interface | |
277 | * will be created. when no_hwmon == true, nothing will be done | |
278 | */ | |
279 | bool no_hwmon; | |
280 | ||
281 | int num_tbps; /* Number of tbp entries */ | |
282 | struct thermal_bind_params *tbp; | |
283 | ||
284 | /* | |
285 | * Sustainable power (heat) that this thermal zone can dissipate in | |
286 | * mW | |
287 | */ | |
288 | u32 sustainable_power; | |
289 | ||
290 | /* | |
291 | * Proportional parameter of the PID controller when | |
292 | * overshooting (i.e., when temperature is below the target) | |
293 | */ | |
294 | s32 k_po; | |
295 | ||
296 | /* | |
297 | * Proportional parameter of the PID controller when | |
298 | * undershooting | |
299 | */ | |
300 | s32 k_pu; | |
301 | ||
302 | /* Integral parameter of the PID controller */ | |
303 | s32 k_i; | |
304 | ||
305 | /* Derivative parameter of the PID controller */ | |
306 | s32 k_d; | |
307 | ||
308 | /* threshold below which the error is no longer accumulated */ | |
309 | s32 integral_cutoff; | |
310 | ||
311 | /* | |
312 | * @slope: slope of a linear temperature adjustment curve. | |
313 | * Used by thermal zone drivers. | |
314 | */ | |
315 | int slope; | |
316 | /* | |
317 | * @offset: offset of a linear temperature adjustment curve. | |
318 | * Used by thermal zone drivers (default 0). | |
319 | */ | |
320 | int offset; | |
321 | }; | |
322 | ||
323 | struct thermal_genl_event { | |
324 | u32 orig; | |
325 | enum events event; | |
326 | }; | |
327 | ||
328 | /** | |
329 | * struct thermal_zone_of_device_ops - scallbacks for handling DT based zones | |
330 | * | |
331 | * Mandatory: | |
332 | * @get_temp: a pointer to a function that reads the sensor temperature. | |
333 | * | |
334 | * Optional: | |
335 | * @get_trend: a pointer to a function that reads the sensor temperature trend. | |
336 | * @set_emul_temp: a pointer to a function that sets sensor emulated | |
337 | * temperature. | |
338 | */ | |
339 | struct thermal_zone_of_device_ops { | |
340 | int (*get_temp)(void *, int *); | |
341 | int (*get_trend)(void *, long *); | |
342 | int (*set_emul_temp)(void *, int); | |
343 | int (*set_trip_temp)(void *, int, int); | |
344 | }; | |
345 | ||
346 | /** | |
347 | * struct thermal_trip - representation of a point in temperature domain | |
348 | * @np: pointer to struct device_node that this trip point was created from | |
349 | * @temperature: temperature value in miliCelsius | |
350 | * @hysteresis: relative hysteresis in miliCelsius | |
351 | * @type: trip point type | |
352 | */ | |
353 | ||
354 | struct thermal_trip { | |
355 | struct device_node *np; | |
356 | int temperature; | |
357 | int hysteresis; | |
358 | enum thermal_trip_type type; | |
359 | }; | |
360 | ||
361 | /* Function declarations */ | |
362 | #ifdef CONFIG_THERMAL_OF | |
363 | struct thermal_zone_device * | |
364 | thermal_zone_of_sensor_register(struct device *dev, int id, void *data, | |
365 | const struct thermal_zone_of_device_ops *ops); | |
366 | void thermal_zone_of_sensor_unregister(struct device *dev, | |
367 | struct thermal_zone_device *tz); | |
368 | struct thermal_zone_device *devm_thermal_zone_of_sensor_register( | |
369 | struct device *dev, int id, void *data, | |
370 | const struct thermal_zone_of_device_ops *ops); | |
371 | void devm_thermal_zone_of_sensor_unregister(struct device *dev, | |
372 | struct thermal_zone_device *tz); | |
373 | #else | |
374 | static inline struct thermal_zone_device * | |
375 | thermal_zone_of_sensor_register(struct device *dev, int id, void *data, | |
376 | const struct thermal_zone_of_device_ops *ops) | |
377 | { | |
378 | return ERR_PTR(-ENODEV); | |
379 | } | |
380 | ||
381 | static inline | |
382 | void thermal_zone_of_sensor_unregister(struct device *dev, | |
383 | struct thermal_zone_device *tz) | |
384 | { | |
385 | } | |
386 | ||
387 | static inline struct thermal_zone_device *devm_thermal_zone_of_sensor_register( | |
388 | struct device *dev, int id, void *data, | |
389 | const struct thermal_zone_of_device_ops *ops) | |
390 | { | |
391 | return ERR_PTR(-ENODEV); | |
392 | } | |
393 | ||
394 | static inline | |
395 | void devm_thermal_zone_of_sensor_unregister(struct device *dev, | |
396 | struct thermal_zone_device *tz) | |
397 | { | |
398 | } | |
399 | ||
400 | #endif | |
401 | ||
402 | #if IS_ENABLED(CONFIG_THERMAL) | |
403 | static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev) | |
404 | { | |
405 | return cdev->ops->get_requested_power && cdev->ops->state2power && | |
406 | cdev->ops->power2state; | |
407 | } | |
408 | ||
409 | int power_actor_get_max_power(struct thermal_cooling_device *, | |
410 | struct thermal_zone_device *tz, u32 *max_power); | |
411 | int power_actor_get_min_power(struct thermal_cooling_device *, | |
412 | struct thermal_zone_device *tz, u32 *min_power); | |
413 | int power_actor_set_power(struct thermal_cooling_device *, | |
414 | struct thermal_instance *, u32); | |
415 | struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, | |
416 | void *, struct thermal_zone_device_ops *, | |
417 | struct thermal_zone_params *, int, int); | |
418 | void thermal_zone_device_unregister(struct thermal_zone_device *); | |
419 | ||
420 | int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, | |
421 | struct thermal_cooling_device *, | |
422 | unsigned long, unsigned long, | |
423 | unsigned int); | |
424 | int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, | |
425 | struct thermal_cooling_device *); | |
426 | void thermal_zone_device_update(struct thermal_zone_device *); | |
427 | ||
428 | struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, | |
429 | const struct thermal_cooling_device_ops *); | |
430 | struct thermal_cooling_device * | |
431 | thermal_of_cooling_device_register(struct device_node *np, char *, void *, | |
432 | const struct thermal_cooling_device_ops *); | |
433 | void thermal_cooling_device_unregister(struct thermal_cooling_device *); | |
434 | struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name); | |
435 | int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp); | |
436 | ||
437 | int get_tz_trend(struct thermal_zone_device *, int); | |
438 | struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, | |
439 | struct thermal_cooling_device *, int); | |
440 | void thermal_cdev_update(struct thermal_cooling_device *); | |
441 | void thermal_notify_framework(struct thermal_zone_device *, int); | |
442 | #else | |
443 | static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev) | |
444 | { return false; } | |
445 | static inline int power_actor_get_max_power(struct thermal_cooling_device *cdev, | |
446 | struct thermal_zone_device *tz, u32 *max_power) | |
447 | { return 0; } | |
448 | static inline int power_actor_get_min_power(struct thermal_cooling_device *cdev, | |
449 | struct thermal_zone_device *tz, | |
450 | u32 *min_power) | |
451 | { return -ENODEV; } | |
452 | static inline int power_actor_set_power(struct thermal_cooling_device *cdev, | |
453 | struct thermal_instance *tz, u32 power) | |
454 | { return 0; } | |
455 | static inline struct thermal_zone_device *thermal_zone_device_register( | |
456 | const char *type, int trips, int mask, void *devdata, | |
457 | struct thermal_zone_device_ops *ops, | |
458 | const struct thermal_zone_params *tzp, | |
459 | int passive_delay, int polling_delay) | |
460 | { return ERR_PTR(-ENODEV); } | |
461 | static inline void thermal_zone_device_unregister( | |
462 | struct thermal_zone_device *tz) | |
463 | { } | |
464 | static inline int thermal_zone_bind_cooling_device( | |
465 | struct thermal_zone_device *tz, int trip, | |
466 | struct thermal_cooling_device *cdev, | |
467 | unsigned long upper, unsigned long lower, | |
468 | unsigned int weight) | |
469 | { return -ENODEV; } | |
470 | static inline int thermal_zone_unbind_cooling_device( | |
471 | struct thermal_zone_device *tz, int trip, | |
472 | struct thermal_cooling_device *cdev) | |
473 | { return -ENODEV; } | |
474 | static inline void thermal_zone_device_update(struct thermal_zone_device *tz) | |
475 | { } | |
476 | static inline struct thermal_cooling_device * | |
477 | thermal_cooling_device_register(char *type, void *devdata, | |
478 | const struct thermal_cooling_device_ops *ops) | |
479 | { return ERR_PTR(-ENODEV); } | |
480 | static inline struct thermal_cooling_device * | |
481 | thermal_of_cooling_device_register(struct device_node *np, | |
482 | char *type, void *devdata, const struct thermal_cooling_device_ops *ops) | |
483 | { return ERR_PTR(-ENODEV); } | |
484 | static inline void thermal_cooling_device_unregister( | |
485 | struct thermal_cooling_device *cdev) | |
486 | { } | |
487 | static inline struct thermal_zone_device *thermal_zone_get_zone_by_name( | |
488 | const char *name) | |
489 | { return ERR_PTR(-ENODEV); } | |
490 | static inline int thermal_zone_get_temp( | |
491 | struct thermal_zone_device *tz, int *temp) | |
492 | { return -ENODEV; } | |
493 | static inline int get_tz_trend(struct thermal_zone_device *tz, int trip) | |
494 | { return -ENODEV; } | |
495 | static inline struct thermal_instance * | |
496 | get_thermal_instance(struct thermal_zone_device *tz, | |
497 | struct thermal_cooling_device *cdev, int trip) | |
498 | { return ERR_PTR(-ENODEV); } | |
499 | static inline void thermal_cdev_update(struct thermal_cooling_device *cdev) | |
500 | { } | |
501 | static inline void thermal_notify_framework(struct thermal_zone_device *tz, | |
502 | int trip) | |
503 | { } | |
504 | #endif /* CONFIG_THERMAL */ | |
505 | ||
506 | #if defined(CONFIG_NET) && IS_ENABLED(CONFIG_THERMAL) | |
507 | extern int thermal_generate_netlink_event(struct thermal_zone_device *tz, | |
508 | enum events event); | |
509 | #else | |
510 | static inline int thermal_generate_netlink_event(struct thermal_zone_device *tz, | |
511 | enum events event) | |
512 | { | |
513 | return 0; | |
514 | } | |
515 | #endif | |
516 | ||
517 | #endif /* __THERMAL_H__ */ |