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1 | /* |
2 | * linux/include/linux/clock_cooling.h | |
3 | * | |
4 | * Copyright (C) 2014 Eduardo Valentin <edubezval@gmail.com> | |
5 | * | |
6 | * Copyright (C) 2013 Texas Instruments Inc. | |
7 | * Contact: Eduardo Valentin <eduardo.valentin@ti.com> | |
8 | * | |
9 | * Highly based on cpu_cooling.c. | |
10 | * Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com) | |
11 | * Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; version 2 of the License. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | */ | |
22 | ||
23 | #ifndef __CPU_COOLING_H__ | |
24 | #define __CPU_COOLING_H__ | |
25 | ||
26 | #include <linux/of.h> | |
27 | #include <linux/thermal.h> | |
28 | #include <linux/cpumask.h> | |
29 | ||
30 | #ifdef CONFIG_CLOCK_THERMAL | |
31 | /** | |
32 | * clock_cooling_register - function to create clock cooling device. | |
33 | * @dev: struct device pointer to the device used as clock cooling device. | |
34 | * @clock_name: string containing the clock used as cooling mechanism. | |
35 | */ | |
36 | struct thermal_cooling_device * | |
37 | clock_cooling_register(struct device *dev, const char *clock_name); | |
38 | ||
39 | /** | |
40 | * clock_cooling_unregister - function to remove clock cooling device. | |
41 | * @cdev: thermal cooling device pointer. | |
42 | */ | |
43 | void clock_cooling_unregister(struct thermal_cooling_device *cdev); | |
44 | ||
45 | unsigned long clock_cooling_get_level(struct thermal_cooling_device *cdev, | |
46 | unsigned long freq); | |
47 | #else /* !CONFIG_CLOCK_THERMAL */ | |
48 | static inline struct thermal_cooling_device * | |
49 | clock_cooling_register(struct device *dev, const char *clock_name) | |
50 | { | |
51 | return NULL; | |
52 | } | |
53 | static inline | |
54 | void clock_cooling_unregister(struct thermal_cooling_device *cdev) | |
55 | { | |
56 | } | |
57 | static inline | |
58 | unsigned long clock_cooling_get_level(struct thermal_cooling_device *cdev, | |
59 | unsigned long freq) | |
60 | { | |
61 | return THERMAL_CSTATE_INVALID; | |
62 | } | |
63 | #endif /* CONFIG_CLOCK_THERMAL */ | |
64 | ||
65 | #endif /* __CPU_COOLING_H__ */ |