| Eduardo Valentin | f9df89d | 2014-01-06 09:04:18 -0400 | [diff] [blame^] | 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__ */ |