1 /* 2 * linux/include/linux/cpu_cooling.h 3 * 4 * Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com) 5 * Copyright (C) 2012 Amit Daniel <[email protected]> 6 * 7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 20 * 21 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 22 */ 23 24 #ifndef __CPU_COOLING_H__ 25 #define __CPU_COOLING_H__ 26 27 #include <linux/thermal.h> 28 29 #define CPUFREQ_COOLING_START 0 30 #define CPUFREQ_COOLING_STOP 1 31 32 #ifdef CONFIG_CPU_THERMAL 33 /** 34 * cpufreq_cooling_register - function to create cpufreq cooling device. 35 * @clip_cpus: cpumask of cpus where the frequency constraints will happen 36 */ 37 struct thermal_cooling_device *cpufreq_cooling_register( 38 const struct cpumask *clip_cpus); 39 40 /** 41 * cpufreq_cooling_unregister - function to remove cpufreq cooling device. 42 * @cdev: thermal cooling device pointer. 43 */ 44 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev); 45 46 unsigned long cpufreq_cooling_get_level(unsigned int, unsigned int); 47 #else /* !CONFIG_CPU_THERMAL */ 48 static inline struct thermal_cooling_device *cpufreq_cooling_register( 49 const struct cpumask *clip_cpus) 50 { 51 return NULL; 52 } 53 static inline void cpufreq_cooling_unregister( 54 struct thermal_cooling_device *cdev) 55 { 56 return; 57 } 58 static inline unsigned long cpufreq_cooling_get_level(unsigned int, 59 unsigned int) 60 { 61 return THERMAL_CSTATE_INVALID; 62 } 63 #endif /* CONFIG_CPU_THERMAL */ 64 65 #endif /* __CPU_COOLING_H__ */ 66