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 #include <linux/cpumask.h> 29 30 #define CPUFREQ_COOLING_START 0 31 #define CPUFREQ_COOLING_STOP 1 32 33 #ifdef CONFIG_CPU_THERMAL 34 /** 35 * cpufreq_cooling_register - function to create cpufreq cooling device. 36 * @clip_cpus: cpumask of cpus where the frequency constraints will happen 37 */ 38 struct thermal_cooling_device *cpufreq_cooling_register( 39 const struct cpumask *clip_cpus); 40 41 /** 42 * cpufreq_cooling_unregister - function to remove cpufreq cooling device. 43 * @cdev: thermal cooling device pointer. 44 */ 45 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev); 46 47 unsigned long cpufreq_cooling_get_level(unsigned int, unsigned int); 48 #else /* !CONFIG_CPU_THERMAL */ 49 static inline struct thermal_cooling_device *cpufreq_cooling_register( 50 const struct cpumask *clip_cpus) 51 { 52 return NULL; 53 } 54 static inline void cpufreq_cooling_unregister( 55 struct thermal_cooling_device *cdev) 56 { 57 return; 58 } 59 static inline unsigned long cpufreq_cooling_get_level(unsigned int, 60 unsigned int) 61 { 62 return THERMAL_CSTATE_INVALID; 63 } 64 #endif /* CONFIG_CPU_THERMAL */ 65 66 #endif /* __CPU_COOLING_H__ */ 67