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 #include <linux/cpumask.h>
19 
20 struct cpufreq_policy;
21 
22 #ifdef CONFIG_CPU_FREQ_THERMAL
23 /**
24  * cpufreq_cooling_register - function to create cpufreq cooling device.
25  * @policy: cpufreq policy.
26  */
27 struct thermal_cooling_device *
28 cpufreq_cooling_register(struct cpufreq_policy *policy);
29 
30 /**
31  * cpufreq_cooling_unregister - function to remove cpufreq cooling device.
32  * @cdev: thermal cooling device pointer.
33  */
34 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
35 
36 /**
37  * of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
38  * @policy: cpufreq policy.
39  */
40 struct thermal_cooling_device *
41 of_cpufreq_cooling_register(struct cpufreq_policy *policy);
42 
43 #else /* !CONFIG_CPU_FREQ_THERMAL */
44 static inline struct thermal_cooling_device *
cpufreq_cooling_register(struct cpufreq_policy * policy)45 cpufreq_cooling_register(struct cpufreq_policy *policy)
46 {
47 	return ERR_PTR(-ENOSYS);
48 }
49 
50 static inline
cpufreq_cooling_unregister(struct thermal_cooling_device * cdev)51 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
52 {
53 	return;
54 }
55 
56 static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct cpufreq_policy * policy)57 of_cpufreq_cooling_register(struct cpufreq_policy *policy)
58 {
59 	return NULL;
60 }
61 #endif /* CONFIG_CPU_FREQ_THERMAL */
62 
63 struct cpuidle_driver;
64 
65 #ifdef CONFIG_CPU_IDLE_THERMAL
66 void cpuidle_cooling_register(struct cpuidle_driver *drv);
67 #else /* CONFIG_CPU_IDLE_THERMAL */
cpuidle_cooling_register(struct cpuidle_driver * drv)68 static inline void cpuidle_cooling_register(struct cpuidle_driver *drv)
69 {
70 }
71 #endif /* CONFIG_CPU_IDLE_THERMAL */
72 
73 #endif /* __CPU_COOLING_H__ */
74