1 /* 2 * thermal_core.h 3 * 4 * Copyright (C) 2012 Intel Corp 5 * Author: Durgadoss R <durgadoss.r@intel.com> 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 __THERMAL_CORE_H__ 25 #define __THERMAL_CORE_H__ 26 27 #include <linux/device.h> 28 #include <linux/thermal.h> 29 30 /* Initial state of a cooling device during binding */ 31 #define THERMAL_NO_TARGET -1UL 32 33 /* 34 * This structure is used to describe the behavior of 35 * a certain cooling device on a certain trip point 36 * in a certain thermal zone 37 */ 38 struct thermal_instance { 39 int id; 40 char name[THERMAL_NAME_LENGTH]; 41 struct thermal_zone_device *tz; 42 struct thermal_cooling_device *cdev; 43 int trip; 44 bool initialized; 45 unsigned long upper; /* Highest cooling state for this trip point */ 46 unsigned long lower; /* Lowest cooling state for this trip point */ 47 unsigned long target; /* expected cooling state */ 48 char attr_name[THERMAL_NAME_LENGTH]; 49 struct device_attribute attr; 50 struct list_head tz_node; /* node in tz->thermal_instances */ 51 struct list_head cdev_node; /* node in cdev->thermal_instances */ 52 }; 53 54 int thermal_register_governor(struct thermal_governor *); 55 void thermal_unregister_governor(struct thermal_governor *); 56 57 #ifdef CONFIG_THERMAL_GOV_STEP_WISE 58 int thermal_gov_step_wise_register(void); 59 void thermal_gov_step_wise_unregister(void); 60 #else thermal_gov_step_wise_register(void)61static inline int thermal_gov_step_wise_register(void) { return 0; } thermal_gov_step_wise_unregister(void)62static inline void thermal_gov_step_wise_unregister(void) {} 63 #endif /* CONFIG_THERMAL_GOV_STEP_WISE */ 64 65 #ifdef CONFIG_THERMAL_GOV_FAIR_SHARE 66 int thermal_gov_fair_share_register(void); 67 void thermal_gov_fair_share_unregister(void); 68 #else thermal_gov_fair_share_register(void)69static inline int thermal_gov_fair_share_register(void) { return 0; } thermal_gov_fair_share_unregister(void)70static inline void thermal_gov_fair_share_unregister(void) {} 71 #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ 72 73 #ifdef CONFIG_THERMAL_GOV_BANG_BANG 74 int thermal_gov_bang_bang_register(void); 75 void thermal_gov_bang_bang_unregister(void); 76 #else thermal_gov_bang_bang_register(void)77static inline int thermal_gov_bang_bang_register(void) { return 0; } thermal_gov_bang_bang_unregister(void)78static inline void thermal_gov_bang_bang_unregister(void) {} 79 #endif /* CONFIG_THERMAL_GOV_BANG_BANG */ 80 81 #ifdef CONFIG_THERMAL_GOV_USER_SPACE 82 int thermal_gov_user_space_register(void); 83 void thermal_gov_user_space_unregister(void); 84 #else thermal_gov_user_space_register(void)85static inline int thermal_gov_user_space_register(void) { return 0; } thermal_gov_user_space_unregister(void)86static inline void thermal_gov_user_space_unregister(void) {} 87 #endif /* CONFIG_THERMAL_GOV_USER_SPACE */ 88 89 /* device tree support */ 90 #ifdef CONFIG_THERMAL_OF 91 int of_parse_thermal_zones(void); 92 void of_thermal_destroy_zones(void); 93 #else of_parse_thermal_zones(void)94static inline int of_parse_thermal_zones(void) { return 0; } of_thermal_destroy_zones(void)95static inline void of_thermal_destroy_zones(void) { } 96 #endif 97 98 #endif /* __THERMAL_CORE_H__ */ 99