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 unsigned long upper; /* Highest cooling state for this trip point */ 45 unsigned long lower; /* Lowest cooling state for this trip point */ 46 unsigned long target; /* expected cooling state */ 47 char attr_name[THERMAL_NAME_LENGTH]; 48 struct device_attribute attr; 49 struct list_head tz_node; /* node in tz->thermal_instances */ 50 struct list_head cdev_node; /* node in cdev->thermal_instances */ 51 }; 52 53 int thermal_register_governor(struct thermal_governor *); 54 void thermal_unregister_governor(struct thermal_governor *); 55 56 #ifdef CONFIG_THERMAL_GOV_STEP_WISE 57 int thermal_gov_step_wise_register(void); 58 void thermal_gov_step_wise_unregister(void); 59 #else 60 static inline int thermal_gov_step_wise_register(void) { return 0; } 61 static inline void thermal_gov_step_wise_unregister(void) {} 62 #endif /* CONFIG_THERMAL_GOV_STEP_WISE */ 63 64 #ifdef CONFIG_THERMAL_GOV_FAIR_SHARE 65 int thermal_gov_fair_share_register(void); 66 void thermal_gov_fair_share_unregister(void); 67 #else 68 static inline int thermal_gov_fair_share_register(void) { return 0; } 69 static inline void thermal_gov_fair_share_unregister(void) {} 70 #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ 71 72 #ifdef CONFIG_THERMAL_GOV_BANG_BANG 73 int thermal_gov_bang_bang_register(void); 74 void thermal_gov_bang_bang_unregister(void); 75 #else 76 static inline int thermal_gov_bang_bang_register(void) { return 0; } 77 static inline void thermal_gov_bang_bang_unregister(void) {} 78 #endif /* CONFIG_THERMAL_GOV_BANG_BANG */ 79 80 #ifdef CONFIG_THERMAL_GOV_USER_SPACE 81 int thermal_gov_user_space_register(void); 82 void thermal_gov_user_space_unregister(void); 83 #else 84 static inline int thermal_gov_user_space_register(void) { return 0; } 85 static inline void thermal_gov_user_space_unregister(void) {} 86 #endif /* CONFIG_THERMAL_GOV_USER_SPACE */ 87 88 /* device tree support */ 89 #ifdef CONFIG_THERMAL_OF 90 int of_parse_thermal_zones(void); 91 void of_thermal_destroy_zones(void); 92 #else 93 static inline int of_parse_thermal_zones(void) { return 0; } 94 static inline void of_thermal_destroy_zones(void) { } 95 #endif 96 97 #endif /* __THERMAL_CORE_H__ */ 98