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Durgadoss R71350db2012-09-18 11:04:53 +05301/*
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 */
38struct 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;
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 */
51};
52
Zhang Rui80a26a52013-03-26 16:38:29 +080053int thermal_register_governor(struct thermal_governor *);
54void thermal_unregister_governor(struct thermal_governor *);
55
56#ifdef CONFIG_THERMAL_GOV_STEP_WISE
57int thermal_gov_step_wise_register(void);
58void thermal_gov_step_wise_unregister(void);
59#else
60static inline int thermal_gov_step_wise_register(void) { return 0; }
61static inline void thermal_gov_step_wise_unregister(void) {}
62#endif /* CONFIG_THERMAL_GOV_STEP_WISE */
63
64#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
65int thermal_gov_fair_share_register(void);
66void thermal_gov_fair_share_unregister(void);
67#else
68static inline int thermal_gov_fair_share_register(void) { return 0; }
69static inline void thermal_gov_fair_share_unregister(void) {}
70#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */
71
72#ifdef CONFIG_THERMAL_GOV_USER_SPACE
73int thermal_gov_user_space_register(void);
74void thermal_gov_user_space_unregister(void);
75#else
76static inline int thermal_gov_user_space_register(void) { return 0; }
77static inline void thermal_gov_user_space_unregister(void) {}
78#endif /* CONFIG_THERMAL_GOV_USER_SPACE */
79
Durgadoss R71350db2012-09-18 11:04:53 +053080#endif /* __THERMAL_CORE_H__ */