root/include/linux/clock_cooling.h

INCLUDED FROM

DEFINITIONS

1. clock_cooling_register
2. clock_cooling_unregister
3. clock_cooling_get_level

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  linux/include/linux/clock_cooling.h
   4  *
   5  *  Copyright (C) 2014 Eduardo Valentin <edubezval@gmail.com>
   6  *
   7  *  Copyright (C) 2013  Texas Instruments Inc.
   8  *  Contact:  Eduardo Valentin <eduardo.valentin@ti.com>
   9  *
  10  *  Highly based on cpu_cooling.c.
  11  *  Copyright (C) 2012  Samsung Electronics Co., Ltd(http://www.samsung.com)
  12  *  Copyright (C) 2012  Amit Daniel <amit.kachhap@linaro.org>
  13  */
  14 
  15 #ifndef __CPU_COOLING_H__
  16 #define __CPU_COOLING_H__
  17 
  18 #include <linux/of.h>
  19 #include <linux/thermal.h>
  20 #include <linux/cpumask.h>
  21 
  22 #ifdef CONFIG_CLOCK_THERMAL
  23 /**
  24  * clock_cooling_register - function to create clock cooling device.
  25  * @dev: struct device pointer to the device used as clock cooling device.
  26  * @clock_name: string containing the clock used as cooling mechanism.
  27  */
  28 struct thermal_cooling_device *
  29 clock_cooling_register(struct device *dev, const char *clock_name);
  30 
  31 /**
  32  * clock_cooling_unregister - function to remove clock cooling device.
  33  * @cdev: thermal cooling device pointer.
  34  */
  35 void clock_cooling_unregister(struct thermal_cooling_device *cdev);
  36 
  37 unsigned long clock_cooling_get_level(struct thermal_cooling_device *cdev,
  38                                       unsigned long freq);
  39 #else /* !CONFIG_CLOCK_THERMAL */
  40 static inline struct thermal_cooling_device *
  41 clock_cooling_register(struct device *dev, const char *clock_name)
  42 {
  43         return NULL;
  44 }
  45 static inline
  46 void clock_cooling_unregister(struct thermal_cooling_device *cdev)
  47 {
  48 }
  49 static inline
  50 unsigned long clock_cooling_get_level(struct thermal_cooling_device *cdev,
  51                                       unsigned long freq)
  52 {
  53         return THERMAL_CSTATE_INVALID;
  54 }
  55 #endif  /* CONFIG_CLOCK_THERMAL */
  56 
  57 #endif /* __CPU_COOLING_H__ */