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