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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - drivers/thermal/thermal_core.h
4 * Copyright (C) 2012 Intel Corp
5 * Author: Durgadoss R <durgadoss.r@intel.com>
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.
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.
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.
21 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 #ifndef __THERMAL_CORE_H__
25 #define __THERMAL_CORE_H__
27 #include <linux/device.h>
28 #include <linux/thermal.h>
30 /* Initial state of a cooling device during binding */
31 #define THERMAL_NO_TARGET -1UL
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
38 struct thermal_instance
{
40 char name
[THERMAL_NAME_LENGTH
];
41 struct thermal_zone_device
*tz
;
42 struct thermal_cooling_device
*cdev
;
44 unsigned long upper
; /* Highest cooling state for this trip point */
45 unsigned long lower
; /* Lowest cooling state for this trip point */
46 unsigned long target
; /* expected cooling state */
47 char attr_name
[THERMAL_NAME_LENGTH
];
48 struct device_attribute attr
;
49 struct list_head tz_node
; /* node in tz->thermal_instances */
50 struct list_head cdev_node
; /* node in cdev->thermal_instances */
53 int thermal_register_governor(struct thermal_governor
*);
54 void thermal_unregister_governor(struct thermal_governor
*);
56 #ifdef CONFIG_THERMAL_GOV_STEP_WISE
57 int thermal_gov_step_wise_register(void);
58 void thermal_gov_step_wise_unregister(void);
60 static inline int thermal_gov_step_wise_register(void) { return 0; }
61 static inline void thermal_gov_step_wise_unregister(void) {}
62 #endif /* CONFIG_THERMAL_GOV_STEP_WISE */
64 #ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
65 int thermal_gov_fair_share_register(void);
66 void thermal_gov_fair_share_unregister(void);
68 static inline int thermal_gov_fair_share_register(void) { return 0; }
69 static inline void thermal_gov_fair_share_unregister(void) {}
70 #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */
72 #ifdef CONFIG_THERMAL_GOV_USER_SPACE
73 int thermal_gov_user_space_register(void);
74 void thermal_gov_user_space_unregister(void);
76 static inline int thermal_gov_user_space_register(void) { return 0; }
77 static inline void thermal_gov_user_space_unregister(void) {}
78 #endif /* CONFIG_THERMAL_GOV_USER_SPACE */
80 /* device tree support */
81 #ifdef CONFIG_THERMAL_OF
82 int of_parse_thermal_zones(void);
83 void of_thermal_destroy_zones(void);
85 static inline int of_parse_thermal_zones(void) { return 0; }
86 static inline void of_thermal_destroy_zones(void) { }
89 #endif /* __THERMAL_CORE_H__ */