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71350db4 D |
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; | |
bb431ba2 | 44 | bool initialized; |
71350db4 D |
45 | unsigned long upper; /* Highest cooling state for this trip point */ |
46 | unsigned long lower; /* Lowest cooling state for this trip point */ | |
47 | unsigned long target; /* expected cooling state */ | |
48 | char attr_name[THERMAL_NAME_LENGTH]; | |
49 | struct device_attribute attr; | |
db916513 JM |
50 | char weight_attr_name[THERMAL_NAME_LENGTH]; |
51 | struct device_attribute weight_attr; | |
71350db4 D |
52 | struct list_head tz_node; /* node in tz->thermal_instances */ |
53 | struct list_head cdev_node; /* node in cdev->thermal_instances */ | |
6cd9e9f6 | 54 | unsigned int weight; /* The weight of the cooling device */ |
71350db4 D |
55 | }; |
56 | ||
ba78da44 EV |
57 | #define to_thermal_zone(_dev) \ |
58 | container_of(_dev, struct thermal_zone_device, device) | |
59 | ||
99ea2eff EV |
60 | #define to_cooling_device(_dev) \ |
61 | container_of(_dev, struct thermal_cooling_device, device) | |
62 | ||
80a26a5c ZR |
63 | int thermal_register_governor(struct thermal_governor *); |
64 | void thermal_unregister_governor(struct thermal_governor *); | |
3d0055d2 EV |
65 | void thermal_zone_device_rebind_exception(struct thermal_zone_device *, |
66 | const char *, size_t); | |
67 | void thermal_zone_device_unbind_exception(struct thermal_zone_device *, | |
68 | const char *, size_t); | |
6b885202 | 69 | int thermal_zone_device_set_policy(struct thermal_zone_device *, char *); |
97d2423b | 70 | int thermal_build_list_of_policies(char *buf); |
80a26a5c | 71 | |
a369ee88 EV |
72 | /* sysfs I/F */ |
73 | int thermal_zone_create_device_groups(struct thermal_zone_device *, int); | |
32fa5ba3 | 74 | void thermal_zone_destroy_device_groups(struct thermal_zone_device *); |
45cf2ec9 | 75 | void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *); |
8ea22951 | 76 | void thermal_cooling_device_destroy_sysfs(struct thermal_cooling_device *cdev); |
45cf2ec9 | 77 | /* used only at binding time */ |
33e678d4 VK |
78 | ssize_t trip_point_show(struct device *, struct device_attribute *, char *); |
79 | ssize_t weight_show(struct device *, struct device_attribute *, char *); | |
80 | ssize_t weight_store(struct device *, struct device_attribute *, const char *, | |
81 | size_t); | |
a369ee88 | 82 | |
8ea22951 VK |
83 | #ifdef CONFIG_THERMAL_STATISTICS |
84 | void thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev, | |
85 | unsigned long new_state); | |
86 | #else | |
87 | static inline void | |
88 | thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev, | |
89 | unsigned long new_state) {} | |
90 | #endif /* CONFIG_THERMAL_STATISTICS */ | |
91 | ||
80a26a5c ZR |
92 | #ifdef CONFIG_THERMAL_GOV_STEP_WISE |
93 | int thermal_gov_step_wise_register(void); | |
94 | void thermal_gov_step_wise_unregister(void); | |
95 | #else | |
96 | static inline int thermal_gov_step_wise_register(void) { return 0; } | |
97 | static inline void thermal_gov_step_wise_unregister(void) {} | |
98 | #endif /* CONFIG_THERMAL_GOV_STEP_WISE */ | |
99 | ||
100 | #ifdef CONFIG_THERMAL_GOV_FAIR_SHARE | |
101 | int thermal_gov_fair_share_register(void); | |
102 | void thermal_gov_fair_share_unregister(void); | |
103 | #else | |
104 | static inline int thermal_gov_fair_share_register(void) { return 0; } | |
105 | static inline void thermal_gov_fair_share_unregister(void) {} | |
106 | #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ | |
107 | ||
e4dbf98f PF |
108 | #ifdef CONFIG_THERMAL_GOV_BANG_BANG |
109 | int thermal_gov_bang_bang_register(void); | |
110 | void thermal_gov_bang_bang_unregister(void); | |
111 | #else | |
112 | static inline int thermal_gov_bang_bang_register(void) { return 0; } | |
113 | static inline void thermal_gov_bang_bang_unregister(void) {} | |
114 | #endif /* CONFIG_THERMAL_GOV_BANG_BANG */ | |
115 | ||
80a26a5c ZR |
116 | #ifdef CONFIG_THERMAL_GOV_USER_SPACE |
117 | int thermal_gov_user_space_register(void); | |
118 | void thermal_gov_user_space_unregister(void); | |
119 | #else | |
120 | static inline int thermal_gov_user_space_register(void) { return 0; } | |
121 | static inline void thermal_gov_user_space_unregister(void) {} | |
122 | #endif /* CONFIG_THERMAL_GOV_USER_SPACE */ | |
123 | ||
6b775e87 JM |
124 | #ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR |
125 | int thermal_gov_power_allocator_register(void); | |
126 | void thermal_gov_power_allocator_unregister(void); | |
127 | #else | |
128 | static inline int thermal_gov_power_allocator_register(void) { return 0; } | |
129 | static inline void thermal_gov_power_allocator_unregister(void) {} | |
130 | #endif /* CONFIG_THERMAL_GOV_POWER_ALLOCATOR */ | |
131 | ||
4e5e4705 EV |
132 | /* device tree support */ |
133 | #ifdef CONFIG_THERMAL_OF | |
134 | int of_parse_thermal_zones(void); | |
135 | void of_thermal_destroy_zones(void); | |
08dab66e | 136 | int of_thermal_get_ntrips(struct thermal_zone_device *); |
a9bf2cc4 | 137 | bool of_thermal_is_trip_valid(struct thermal_zone_device *, int); |
ebc3193a | 138 | const struct thermal_trip * |
ce8be778 | 139 | of_thermal_get_trip_points(struct thermal_zone_device *); |
4e5e4705 EV |
140 | #else |
141 | static inline int of_parse_thermal_zones(void) { return 0; } | |
142 | static inline void of_thermal_destroy_zones(void) { } | |
08dab66e LM |
143 | static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz) |
144 | { | |
145 | return 0; | |
146 | } | |
a9bf2cc4 LM |
147 | static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, |
148 | int trip) | |
149 | { | |
ce1d9491 | 150 | return false; |
a9bf2cc4 | 151 | } |
ebc3193a | 152 | static inline const struct thermal_trip * |
ce8be778 LM |
153 | of_thermal_get_trip_points(struct thermal_zone_device *tz) |
154 | { | |
155 | return NULL; | |
156 | } | |
4e5e4705 EV |
157 | #endif |
158 | ||
71350db4 | 159 | #endif /* __THERMAL_CORE_H__ */ |