| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * linux/include/linux/cpu_cooling.h |
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| 4 | * |
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| 5 | * Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com) |
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| 6 | * Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org> |
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| 7 | * |
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| 8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 9 | * |
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| 10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 11 | */ |
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| 12 | |
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| 13 | #ifndef __CPU_COOLING_H__ |
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| 14 | #define __CPU_COOLING_H__ |
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| 15 | |
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| 16 | #include <linux/of.h> |
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| 17 | #include <linux/thermal.h> |
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| 18 | |
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| 19 | struct cpufreq_policy; |
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| 20 | |
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| 21 | #ifdef CONFIG_CPU_FREQ_THERMAL |
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| 22 | /** |
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| 23 | * cpufreq_cooling_register - function to create cpufreq cooling device. |
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| 24 | * @policy: cpufreq policy. |
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| 25 | */ |
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| 26 | struct thermal_cooling_device * |
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| 27 | cpufreq_cooling_register(struct cpufreq_policy *policy); |
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| 28 | |
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| 29 | /** |
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| 30 | * cpufreq_cooling_unregister - function to remove cpufreq cooling device. |
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| 31 | * @cdev: thermal cooling device pointer. |
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| 32 | */ |
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| 33 | void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev); |
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| 34 | |
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| 35 | /** |
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| 36 | * of_cpufreq_cooling_register - create cpufreq cooling device based on DT. |
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| 37 | * @policy: cpufreq policy. |
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| 38 | */ |
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| 39 | struct thermal_cooling_device * |
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| 40 | of_cpufreq_cooling_register(struct cpufreq_policy *policy); |
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| 41 | |
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| 42 | #else /* !CONFIG_CPU_FREQ_THERMAL */ |
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| 43 | static inline struct thermal_cooling_device * |
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| 44 | cpufreq_cooling_register(struct cpufreq_policy *policy) |
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| 45 | { |
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| 46 | return ERR_PTR(-ENOSYS); |
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| 47 | } |
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| 48 | |
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| 49 | static inline |
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| 50 | void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) |
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| 51 | { |
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| 52 | return; |
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| 53 | } |
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| 54 | |
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| 55 | static inline struct thermal_cooling_device * |
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| 56 | of_cpufreq_cooling_register(struct cpufreq_policy *policy) |
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| 57 | { |
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| 58 | return NULL; |
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| 59 | } |
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| 60 | #endif /* CONFIG_CPU_FREQ_THERMAL */ |
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| 61 | |
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| 62 | struct cpuidle_driver; |
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| 63 | |
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| 64 | #ifdef CONFIG_CPU_IDLE_THERMAL |
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| 65 | void cpuidle_cooling_register(struct cpuidle_driver *drv); |
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| 66 | #else /* CONFIG_CPU_IDLE_THERMAL */ |
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| 67 | static inline void cpuidle_cooling_register(struct cpuidle_driver *drv) |
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| 68 | { |
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| 69 | } |
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| 70 | #endif /* CONFIG_CPU_IDLE_THERMAL */ |
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| 71 | |
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| 72 | #endif /* __CPU_COOLING_H__ */ |
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| 73 | |
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