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
20struct 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 */
27struct thermal_cooling_device *
28cpufreq_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 */
34void 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 */
40struct thermal_cooling_device *
41of_cpufreq_cooling_register(struct cpufreq_policy *policy);
42
43#else /* !CONFIG_CPU_FREQ_THERMAL */
44static inline struct thermal_cooling_device *
45cpufreq_cooling_register(struct cpufreq_policy *policy)
46{
47 return ERR_PTR(-ENOSYS);
48}
49
50static inline
51void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
52{
53 return;
54}
55
56static inline struct thermal_cooling_device *
57of_cpufreq_cooling_register(struct cpufreq_policy *policy)
58{
59 return NULL;
60}
61#endif /* CONFIG_CPU_FREQ_THERMAL */
62
63struct cpuidle_driver;
64
65#ifdef CONFIG_CPU_IDLE_THERMAL
66void cpuidle_cooling_register(struct cpuidle_driver *drv);
67#else /* CONFIG_CPU_IDLE_THERMAL */
68static inline void cpuidle_cooling_register(struct cpuidle_driver *drv)
69{
70}
71#endif /* CONFIG_CPU_IDLE_THERMAL */
72
73#endif /* __CPU_COOLING_H__ */
74

source code of linux/include/linux/cpu_cooling.h