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 * cpufreq_cooling_register(struct cpufreq_policy * policy)44cpufreq_cooling_register(struct cpufreq_policy *policy) 45 { 46 return ERR_PTR(-ENOSYS); 47 } 48 49 static inline cpufreq_cooling_unregister(struct thermal_cooling_device * cdev)50void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) 51 { 52 return; 53 } 54 55 static inline struct thermal_cooling_device * of_cpufreq_cooling_register(struct cpufreq_policy * policy)56of_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 */ cpuidle_cooling_register(struct cpuidle_driver * drv)67static inline void cpuidle_cooling_register(struct cpuidle_driver *drv) 68 { 69 } 70 #endif /* CONFIG_CPU_IDLE_THERMAL */ 71 72 #endif /* __CPU_COOLING_H__ */ 73