include/linux/cpu_cooling.h

   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__ */