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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 | ||
203d3d4a ZR |
47 | struct thermal_zone_device_ops { |
48 | int (*bind) (struct thermal_zone_device *, | |
49 | struct thermal_cooling_device *); | |
50 | int (*unbind) (struct thermal_zone_device *, | |
51 | struct thermal_cooling_device *); | |
6503e5df MG |
52 | int (*get_temp) (struct thermal_zone_device *, unsigned long *); |
53 | int (*get_mode) (struct thermal_zone_device *, | |
54 | enum thermal_device_mode *); | |
55 | int (*set_mode) (struct thermal_zone_device *, | |
56 | enum thermal_device_mode); | |
57 | int (*get_trip_type) (struct thermal_zone_device *, int, | |
58 | enum thermal_trip_type *); | |
59 | int (*get_trip_temp) (struct thermal_zone_device *, int, | |
60 | unsigned long *); | |
c56f5c03 D |
61 | int (*set_trip_temp) (struct thermal_zone_device *, int, |
62 | unsigned long); | |
27365a6c D |
63 | int (*get_trip_hyst) (struct thermal_zone_device *, int, |
64 | unsigned long *); | |
65 | int (*set_trip_hyst) (struct thermal_zone_device *, int, | |
66 | unsigned long); | |
9ec732ff | 67 | int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); |
b1569e99 MG |
68 | int (*notify) (struct thermal_zone_device *, int, |
69 | enum thermal_trip_type); | |
203d3d4a ZR |
70 | }; |
71 | ||
72 | struct thermal_cooling_device_ops { | |
6503e5df MG |
73 | int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); |
74 | int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); | |
75 | int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); | |
203d3d4a ZR |
76 | }; |
77 | ||
9d99842f ZR |
78 | #define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */ |
79 | ||
203d3d4a | 80 | #define THERMAL_TRIPS_NONE -1 |
5f1a3f2a | 81 | #define THERMAL_MAX_TRIPS 12 |
203d3d4a ZR |
82 | #define THERMAL_NAME_LENGTH 20 |
83 | struct thermal_cooling_device { | |
84 | int id; | |
85 | char type[THERMAL_NAME_LENGTH]; | |
86 | struct device device; | |
87 | void *devdata; | |
5b275ce2 | 88 | const struct thermal_cooling_device_ops *ops; |
203d3d4a ZR |
89 | struct list_head node; |
90 | }; | |
91 | ||
041d4bbf ZR |
92 | #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ |
93 | ((long)t-2732+5)/10 : ((long)t-2732-5)/10) | |
94 | #define CELSIUS_TO_KELVIN(t) ((t)*10+2732) | |
95 | ||
c56f5c03 D |
96 | struct thermal_attr { |
97 | struct device_attribute attr; | |
98 | char name[THERMAL_NAME_LENGTH]; | |
99 | }; | |
100 | ||
203d3d4a ZR |
101 | struct thermal_zone_device { |
102 | int id; | |
103 | char type[THERMAL_NAME_LENGTH]; | |
104 | struct device device; | |
c56f5c03 D |
105 | struct thermal_attr *trip_temp_attrs; |
106 | struct thermal_attr *trip_type_attrs; | |
27365a6c | 107 | struct thermal_attr *trip_hyst_attrs; |
203d3d4a ZR |
108 | void *devdata; |
109 | int trips; | |
b1569e99 MG |
110 | int tc1; |
111 | int tc2; | |
112 | int passive_delay; | |
113 | int polling_delay; | |
114 | int last_temperature; | |
115 | bool passive; | |
03a971a2 | 116 | unsigned int forced_passive; |
5b275ce2 | 117 | const struct thermal_zone_device_ops *ops; |
203d3d4a ZR |
118 | struct list_head cooling_devices; |
119 | struct idr idr; | |
120 | struct mutex lock; /* protect cooling devices list */ | |
121 | struct list_head node; | |
b1569e99 | 122 | struct delayed_work poll_queue; |
203d3d4a | 123 | }; |
4cb18728 D |
124 | /* Adding event notification support elements */ |
125 | #define THERMAL_GENL_FAMILY_NAME "thermal_event" | |
126 | #define THERMAL_GENL_VERSION 0x01 | |
127 | #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" | |
128 | ||
129 | enum events { | |
130 | THERMAL_AUX0, | |
131 | THERMAL_AUX1, | |
132 | THERMAL_CRITICAL, | |
133 | THERMAL_DEV_FAULT, | |
134 | }; | |
135 | ||
136 | struct thermal_genl_event { | |
137 | u32 orig; | |
138 | enum events event; | |
139 | }; | |
140 | /* attributes of thermal_genl_family */ | |
141 | enum { | |
142 | THERMAL_GENL_ATTR_UNSPEC, | |
143 | THERMAL_GENL_ATTR_EVENT, | |
144 | __THERMAL_GENL_ATTR_MAX, | |
145 | }; | |
146 | #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) | |
147 | ||
148 | /* commands supported by the thermal_genl_family */ | |
149 | enum { | |
150 | THERMAL_GENL_CMD_UNSPEC, | |
151 | THERMAL_GENL_CMD_EVENT, | |
152 | __THERMAL_GENL_CMD_MAX, | |
153 | }; | |
154 | #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) | |
203d3d4a | 155 | |
4b1bf587 | 156 | struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, |
c56f5c03 D |
157 | void *, const struct thermal_zone_device_ops *, int tc1, |
158 | int tc2, int passive_freq, int polling_freq); | |
203d3d4a ZR |
159 | void thermal_zone_device_unregister(struct thermal_zone_device *); |
160 | ||
161 | int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, | |
9d99842f ZR |
162 | struct thermal_cooling_device *, |
163 | unsigned long, unsigned long); | |
203d3d4a ZR |
164 | int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, |
165 | struct thermal_cooling_device *); | |
b1569e99 | 166 | void thermal_zone_device_update(struct thermal_zone_device *); |
203d3d4a | 167 | struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, |
5b275ce2 | 168 | const struct thermal_cooling_device_ops *); |
203d3d4a | 169 | void thermal_cooling_device_unregister(struct thermal_cooling_device *); |
af06216a RW |
170 | |
171 | #ifdef CONFIG_NET | |
2d58d7ea | 172 | extern int thermal_generate_netlink_event(u32 orig, enum events event); |
af06216a | 173 | #else |
2d58d7ea | 174 | static inline int thermal_generate_netlink_event(u32 orig, enum events event) |
af06216a RW |
175 | { |
176 | return 0; | |
177 | } | |
178 | #endif | |
203d3d4a | 179 | |
a0dd25b2 | 180 | #endif /* __THERMAL_H__ */ |