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203d3d4a ZR |
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> | |
b1569e99 | 30 | #include <linux/workqueue.h> |
203d3d4a ZR |
31 | |
32 | struct thermal_zone_device; | |
33 | struct thermal_cooling_device; | |
34 | ||
6503e5df MG |
35 | enum thermal_device_mode { |
36 | THERMAL_DEVICE_DISABLED = 0, | |
37 | THERMAL_DEVICE_ENABLED, | |
38 | }; | |
39 | ||
40 | enum thermal_trip_type { | |
41 | THERMAL_TRIP_ACTIVE = 0, | |
42 | THERMAL_TRIP_PASSIVE, | |
43 | THERMAL_TRIP_HOT, | |
44 | THERMAL_TRIP_CRITICAL, | |
45 | }; | |
46 | ||
601f3d42 ZR |
47 | enum thermal_trend { |
48 | THERMAL_TREND_STABLE, /* temperature is stable */ | |
49 | THERMAL_TREND_RAISING, /* temperature is raising */ | |
50 | THERMAL_TREND_DROPPING, /* temperature is dropping */ | |
51 | }; | |
52 | ||
203d3d4a ZR |
53 | struct thermal_zone_device_ops { |
54 | int (*bind) (struct thermal_zone_device *, | |
55 | struct thermal_cooling_device *); | |
56 | int (*unbind) (struct thermal_zone_device *, | |
57 | struct thermal_cooling_device *); | |
6503e5df MG |
58 | int (*get_temp) (struct thermal_zone_device *, unsigned long *); |
59 | int (*get_mode) (struct thermal_zone_device *, | |
60 | enum thermal_device_mode *); | |
61 | int (*set_mode) (struct thermal_zone_device *, | |
62 | enum thermal_device_mode); | |
63 | int (*get_trip_type) (struct thermal_zone_device *, int, | |
64 | enum thermal_trip_type *); | |
65 | int (*get_trip_temp) (struct thermal_zone_device *, int, | |
66 | unsigned long *); | |
c56f5c03 D |
67 | int (*set_trip_temp) (struct thermal_zone_device *, int, |
68 | unsigned long); | |
27365a6c D |
69 | int (*get_trip_hyst) (struct thermal_zone_device *, int, |
70 | unsigned long *); | |
71 | int (*set_trip_hyst) (struct thermal_zone_device *, int, | |
72 | unsigned long); | |
9ec732ff | 73 | int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); |
601f3d42 ZR |
74 | int (*get_trend) (struct thermal_zone_device *, int, |
75 | enum thermal_trend *); | |
b1569e99 MG |
76 | int (*notify) (struct thermal_zone_device *, int, |
77 | enum thermal_trip_type); | |
203d3d4a ZR |
78 | }; |
79 | ||
80 | struct thermal_cooling_device_ops { | |
6503e5df MG |
81 | int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); |
82 | int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); | |
83 | int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); | |
203d3d4a ZR |
84 | }; |
85 | ||
9d99842f ZR |
86 | #define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */ |
87 | ||
203d3d4a | 88 | #define THERMAL_TRIPS_NONE -1 |
5f1a3f2a | 89 | #define THERMAL_MAX_TRIPS 12 |
203d3d4a ZR |
90 | #define THERMAL_NAME_LENGTH 20 |
91 | struct thermal_cooling_device { | |
92 | int id; | |
93 | char type[THERMAL_NAME_LENGTH]; | |
94 | struct device device; | |
95 | void *devdata; | |
5b275ce2 | 96 | const struct thermal_cooling_device_ops *ops; |
ce119f83 | 97 | bool updated; /* true if the cooling device does not need update */ |
b5e4ae62 | 98 | struct list_head thermal_instances; |
203d3d4a ZR |
99 | struct list_head node; |
100 | }; | |
101 | ||
041d4bbf ZR |
102 | #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ |
103 | ((long)t-2732+5)/10 : ((long)t-2732-5)/10) | |
104 | #define CELSIUS_TO_KELVIN(t) ((t)*10+2732) | |
105 | ||
c56f5c03 D |
106 | struct thermal_attr { |
107 | struct device_attribute attr; | |
108 | char name[THERMAL_NAME_LENGTH]; | |
109 | }; | |
110 | ||
203d3d4a ZR |
111 | struct thermal_zone_device { |
112 | int id; | |
113 | char type[THERMAL_NAME_LENGTH]; | |
114 | struct device device; | |
c56f5c03 D |
115 | struct thermal_attr *trip_temp_attrs; |
116 | struct thermal_attr *trip_type_attrs; | |
27365a6c | 117 | struct thermal_attr *trip_hyst_attrs; |
203d3d4a ZR |
118 | void *devdata; |
119 | int trips; | |
b1569e99 MG |
120 | int passive_delay; |
121 | int polling_delay; | |
601f3d42 | 122 | int temperature; |
b1569e99 | 123 | int last_temperature; |
908b9fb7 | 124 | int passive; |
03a971a2 | 125 | unsigned int forced_passive; |
5b275ce2 | 126 | const struct thermal_zone_device_ops *ops; |
2d374139 | 127 | struct list_head thermal_instances; |
203d3d4a | 128 | struct idr idr; |
2d374139 | 129 | struct mutex lock; /* protect thermal_instances list */ |
203d3d4a | 130 | struct list_head node; |
b1569e99 | 131 | struct delayed_work poll_queue; |
203d3d4a | 132 | }; |
4cb18728 D |
133 | /* Adding event notification support elements */ |
134 | #define THERMAL_GENL_FAMILY_NAME "thermal_event" | |
135 | #define THERMAL_GENL_VERSION 0x01 | |
136 | #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" | |
137 | ||
138 | enum events { | |
139 | THERMAL_AUX0, | |
140 | THERMAL_AUX1, | |
141 | THERMAL_CRITICAL, | |
142 | THERMAL_DEV_FAULT, | |
143 | }; | |
144 | ||
145 | struct thermal_genl_event { | |
146 | u32 orig; | |
147 | enum events event; | |
148 | }; | |
149 | /* attributes of thermal_genl_family */ | |
150 | enum { | |
151 | THERMAL_GENL_ATTR_UNSPEC, | |
152 | THERMAL_GENL_ATTR_EVENT, | |
153 | __THERMAL_GENL_ATTR_MAX, | |
154 | }; | |
155 | #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) | |
156 | ||
157 | /* commands supported by the thermal_genl_family */ | |
158 | enum { | |
159 | THERMAL_GENL_CMD_UNSPEC, | |
160 | THERMAL_GENL_CMD_EVENT, | |
161 | __THERMAL_GENL_CMD_MAX, | |
162 | }; | |
163 | #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) | |
203d3d4a | 164 | |
4b1bf587 | 165 | struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, |
1b7ddb84 | 166 | void *, const struct thermal_zone_device_ops *, int, int); |
203d3d4a ZR |
167 | void thermal_zone_device_unregister(struct thermal_zone_device *); |
168 | ||
169 | int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, | |
9d99842f ZR |
170 | struct thermal_cooling_device *, |
171 | unsigned long, unsigned long); | |
203d3d4a ZR |
172 | int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, |
173 | struct thermal_cooling_device *); | |
b1569e99 | 174 | void thermal_zone_device_update(struct thermal_zone_device *); |
203d3d4a | 175 | struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, |
5b275ce2 | 176 | const struct thermal_cooling_device_ops *); |
203d3d4a | 177 | void thermal_cooling_device_unregister(struct thermal_cooling_device *); |
af06216a RW |
178 | |
179 | #ifdef CONFIG_NET | |
2d58d7ea | 180 | extern int thermal_generate_netlink_event(u32 orig, enum events event); |
af06216a | 181 | #else |
2d58d7ea | 182 | static inline int thermal_generate_netlink_event(u32 orig, enum events event) |
af06216a RW |
183 | { |
184 | return 0; | |
185 | } | |
186 | #endif | |
203d3d4a | 187 | |
a0dd25b2 | 188 | #endif /* __THERMAL_H__ */ |