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/of.h> 28 #include <linux/thermal.h> 29 #include <linux/cpumask.h> 30 31 struct cpufreq_policy; 32 33 typedef int (*get_static_t)(cpumask_t *cpumask, int interval, 34 unsigned long voltage, u32 *power); 35 36 #ifdef CONFIG_CPU_THERMAL 37 /** 38 * cpufreq_cooling_register - function to create cpufreq cooling device. 39 * @policy: cpufreq policy. 40 */ 41 struct thermal_cooling_device * 42 cpufreq_cooling_register(struct cpufreq_policy *policy); 43 44 /** 45 * cpufreq_cooling_unregister - function to remove cpufreq cooling device. 46 * @cdev: thermal cooling device pointer. 47 */ 48 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev); 49 50 #else /* !CONFIG_CPU_THERMAL */ 51 static inline struct thermal_cooling_device * 52 cpufreq_cooling_register(struct cpufreq_policy *policy) 53 { 54 return ERR_PTR(-ENOSYS); 55 } 56 57 static inline 58 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) 59 { 60 return; 61 } 62 #endif /* CONFIG_CPU_THERMAL */ 63 64 #if defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL) 65 /** 66 * of_cpufreq_cooling_register - create cpufreq cooling device based on DT. 67 * @policy: cpufreq policy. 68 */ 69 struct thermal_cooling_device * 70 of_cpufreq_cooling_register(struct cpufreq_policy *policy); 71 #else 72 static inline struct thermal_cooling_device * 73 of_cpufreq_cooling_register(struct cpufreq_policy *policy) 74 { 75 return NULL; 76 } 77 #endif /* defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL) */ 78 79 #endif /* __CPU_COOLING_H__ */ 80