Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 1 | /* |
| 2 | * thermal.h ($Revision: 0 $) |
| 3 | * |
| 4 | * Copyright (C) 2008 Intel Corp |
| 5 | * Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com> |
| 6 | * Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com> |
| 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 | |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame^] | 34 | enum thermal_device_mode { |
| 35 | THERMAL_DEVICE_DISABLED = 0, |
| 36 | THERMAL_DEVICE_ENABLED, |
| 37 | }; |
| 38 | |
| 39 | enum thermal_trip_type { |
| 40 | THERMAL_TRIP_ACTIVE = 0, |
| 41 | THERMAL_TRIP_PASSIVE, |
| 42 | THERMAL_TRIP_HOT, |
| 43 | THERMAL_TRIP_CRITICAL, |
| 44 | }; |
| 45 | |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 46 | struct thermal_zone_device_ops { |
| 47 | int (*bind) (struct thermal_zone_device *, |
| 48 | struct thermal_cooling_device *); |
| 49 | int (*unbind) (struct thermal_zone_device *, |
| 50 | struct thermal_cooling_device *); |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame^] | 51 | int (*get_temp) (struct thermal_zone_device *, unsigned long *); |
| 52 | int (*get_mode) (struct thermal_zone_device *, |
| 53 | enum thermal_device_mode *); |
| 54 | int (*set_mode) (struct thermal_zone_device *, |
| 55 | enum thermal_device_mode); |
| 56 | int (*get_trip_type) (struct thermal_zone_device *, int, |
| 57 | enum thermal_trip_type *); |
| 58 | int (*get_trip_temp) (struct thermal_zone_device *, int, |
| 59 | unsigned long *); |
Zhang, Rui | 9ec732f | 2008-04-10 16:13:10 +0800 | [diff] [blame] | 60 | int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 61 | }; |
| 62 | |
| 63 | struct thermal_cooling_device_ops { |
Matthew Garrett | 6503e5d | 2008-11-27 17:48:13 +0000 | [diff] [blame^] | 64 | int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); |
| 65 | int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); |
| 66 | int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 67 | }; |
| 68 | |
| 69 | #define THERMAL_TRIPS_NONE -1 |
Krzysztof Helt | 5f1a3f2 | 2008-04-15 14:34:47 -0700 | [diff] [blame] | 70 | #define THERMAL_MAX_TRIPS 12 |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 71 | #define THERMAL_NAME_LENGTH 20 |
| 72 | struct thermal_cooling_device { |
| 73 | int id; |
| 74 | char type[THERMAL_NAME_LENGTH]; |
| 75 | struct device device; |
| 76 | void *devdata; |
| 77 | struct thermal_cooling_device_ops *ops; |
| 78 | struct list_head node; |
| 79 | }; |
| 80 | |
Zhang Rui | 041d4bb | 2008-01-17 15:51:19 +0800 | [diff] [blame] | 81 | #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ |
| 82 | ((long)t-2732+5)/10 : ((long)t-2732-5)/10) |
| 83 | #define CELSIUS_TO_KELVIN(t) ((t)*10+2732) |
| 84 | |
Rene Herman | 16d7523 | 2008-06-24 19:38:56 +0200 | [diff] [blame] | 85 | #if defined(CONFIG_THERMAL_HWMON) |
Zhang Rui | e68b16a | 2008-04-21 16:07:52 +0800 | [diff] [blame] | 86 | /* thermal zone devices with the same type share one hwmon device */ |
| 87 | struct thermal_hwmon_device { |
| 88 | char type[THERMAL_NAME_LENGTH]; |
| 89 | struct device *device; |
| 90 | int count; |
| 91 | struct list_head tz_list; |
| 92 | struct list_head node; |
| 93 | }; |
| 94 | |
| 95 | struct thermal_hwmon_attr { |
| 96 | struct device_attribute attr; |
| 97 | char name[16]; |
| 98 | }; |
| 99 | #endif |
| 100 | |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 101 | struct thermal_zone_device { |
| 102 | int id; |
| 103 | char type[THERMAL_NAME_LENGTH]; |
| 104 | struct device device; |
| 105 | void *devdata; |
| 106 | int trips; |
| 107 | struct thermal_zone_device_ops *ops; |
| 108 | struct list_head cooling_devices; |
| 109 | struct idr idr; |
| 110 | struct mutex lock; /* protect cooling devices list */ |
| 111 | struct list_head node; |
Rene Herman | 16d7523 | 2008-06-24 19:38:56 +0200 | [diff] [blame] | 112 | #if defined(CONFIG_THERMAL_HWMON) |
Zhang Rui | e68b16a | 2008-04-21 16:07:52 +0800 | [diff] [blame] | 113 | struct list_head hwmon_node; |
| 114 | struct thermal_hwmon_device *hwmon; |
| 115 | struct thermal_hwmon_attr temp_input; /* hwmon sys attr */ |
| 116 | struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */ |
| 117 | #endif |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 118 | }; |
| 119 | |
| 120 | struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, |
Len Brown | a0dd25b | 2008-02-09 04:01:48 -0500 | [diff] [blame] | 121 | struct |
| 122 | thermal_zone_device_ops |
| 123 | *); |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 124 | void thermal_zone_device_unregister(struct thermal_zone_device *); |
| 125 | |
| 126 | int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, |
| 127 | struct thermal_cooling_device *); |
| 128 | int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, |
| 129 | struct thermal_cooling_device *); |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 130 | struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, |
Len Brown | a0dd25b | 2008-02-09 04:01:48 -0500 | [diff] [blame] | 131 | struct |
| 132 | thermal_cooling_device_ops |
| 133 | *); |
Zhang Rui | 203d3d4 | 2008-01-17 15:51:08 +0800 | [diff] [blame] | 134 | void thermal_cooling_device_unregister(struct thermal_cooling_device *); |
| 135 | |
Len Brown | a0dd25b | 2008-02-09 04:01:48 -0500 | [diff] [blame] | 136 | #endif /* __THERMAL_H__ */ |