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 #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 *
  45 cpufreq_cooling_register(struct cpufreq_policy *policy)
  46 {
  47         return ERR_PTR(-ENOSYS);
  48 }
  49
  50 static inline
  51 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
  52 {
  53         return;
  54 }
  55
  56 static inline struct thermal_cooling_device *
  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 */
  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__ */