1 /* 2 * thermal.h ($Revision: 0 $) 3 * 4 * Copyright (C) 2008 Intel Corp 5 * Copyright (C) 2008 Zhang Rui <[email protected]> 6 * Copyright (C) 2008 Sujith Thomas <[email protected]> 7 * 8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; version 2 of the License. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, write to the Free Software Foundation, Inc., 20 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 21 * 22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 23 */ 24 25 #ifndef __THERMAL_H__ 26 #define __THERMAL_H__ 27 28 #include <linux/idr.h> 29 #include <linux/device.h> 30 31 struct thermal_zone_device; 32 struct thermal_cooling_device; 33 34 struct thermal_zone_device_ops { 35 int (*bind) (struct thermal_zone_device *, 36 struct thermal_cooling_device *); 37 int (*unbind) (struct thermal_zone_device *, 38 struct thermal_cooling_device *); 39 int (*get_temp) (struct thermal_zone_device *, char *); 40 int (*get_mode) (struct thermal_zone_device *, char *); 41 int (*set_mode) (struct thermal_zone_device *, const char *); 42 int (*get_trip_type) (struct thermal_zone_device *, int, char *); 43 int (*get_trip_temp) (struct thermal_zone_device *, int, char *); 44 }; 45 46 struct thermal_cooling_device_ops { 47 int (*get_max_state) (struct thermal_cooling_device *, char *); 48 int (*get_cur_state) (struct thermal_cooling_device *, char *); 49 int (*set_cur_state) (struct thermal_cooling_device *, unsigned int); 50 }; 51 52 #define THERMAL_TRIPS_NONE -1 53 #define THERMAL_MAX_TRIPS 10 54 #define THERMAL_NAME_LENGTH 20 55 struct thermal_cooling_device { 56 int id; 57 char type[THERMAL_NAME_LENGTH]; 58 struct device device; 59 void *devdata; 60 struct thermal_cooling_device_ops *ops; 61 struct list_head node; 62 }; 63 64 #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ 65 ((long)t-2732+5)/10 : ((long)t-2732-5)/10) 66 #define CELSIUS_TO_KELVIN(t) ((t)*10+2732) 67 68 struct thermal_zone_device { 69 int id; 70 char type[THERMAL_NAME_LENGTH]; 71 struct device device; 72 void *devdata; 73 int trips; 74 struct thermal_zone_device_ops *ops; 75 struct list_head cooling_devices; 76 struct idr idr; 77 struct mutex lock; /* protect cooling devices list */ 78 struct list_head node; 79 }; 80 81 struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, 82 struct 83 thermal_zone_device_ops 84 *); 85 void thermal_zone_device_unregister(struct thermal_zone_device *); 86 87 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, 88 struct thermal_cooling_device *); 89 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, 90 struct thermal_cooling_device *); 91 92 #ifdef CONFIG_THERMAL 93 struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, 94 struct 95 thermal_cooling_device_ops 96 *); 97 void thermal_cooling_device_unregister(struct thermal_cooling_device *); 98 #else 99 static inline struct thermal_cooling_device 100 *thermal_cooling_device_register(char *c, void *v, 101 struct thermal_cooling_device_ops *t) 102 { 103 return NULL; 104 } 105 static inline 106 void thermal_cooling_device_unregister(struct thermal_cooling_device *t) 107 { 108 }; 109 #endif 110 111 #endif /* __THERMAL_H__ */ 112