1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * linux/include/linux/cpu_cooling.h
4 *
5 * Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
6 * Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org>
7 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 */
12
13 #ifndef __CPU_COOLING_H__
14 #define __CPU_COOLING_H__
15
16 #include <linux/of.h>
17 #include <linux/thermal.h>
18
19 struct cpufreq_policy;
20
21 #ifdef CONFIG_CPU_FREQ_THERMAL
22 /**
23 * cpufreq_cooling_register - function to create cpufreq cooling device.
24 * @policy: cpufreq policy.
25 */
26 struct thermal_cooling_device *
27 cpufreq_cooling_register(struct cpufreq_policy *policy);
28
29 /**
30 * cpufreq_cooling_unregister - function to remove cpufreq cooling device.
31 * @cdev: thermal cooling device pointer.
32 */
33 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
34
35 /**
36 * of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
37 * @policy: cpufreq policy.
38 */
39 struct thermal_cooling_device *
40 of_cpufreq_cooling_register(struct cpufreq_policy *policy);
41
42 #else /* !CONFIG_CPU_FREQ_THERMAL */
43 static inline struct thermal_cooling_device *
44 cpufreq_cooling_register(struct cpufreq_policy *policy)
45 {
46 return ERR_PTR(-ENOSYS);
47 }
48
49 static inline
50 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
51 {
52 return;
53 }
54
55 static inline struct thermal_cooling_device *
56 of_cpufreq_cooling_register(struct cpufreq_policy *policy)
57 {
58 return NULL;
59 }
60 #endif /* CONFIG_CPU_FREQ_THERMAL */
61
62 struct cpuidle_driver;
63
64 #ifdef CONFIG_CPU_IDLE_THERMAL
65 void cpuidle_cooling_register(struct cpuidle_driver *drv);
66 #else /* CONFIG_CPU_IDLE_THERMAL */
67 static inline void cpuidle_cooling_register(struct cpuidle_driver *drv)
68 {
69 }
70 #endif /* CONFIG_CPU_IDLE_THERMAL */
71
72 #endif /* __CPU_COOLING_H__ */
73
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.