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1cc807a2 D |
1 | /* |
2 | * user_space.c - A simple user space Thermal events notifier | |
3 | * | |
4 | * Copyright (C) 2012 Intel Corp | |
5 | * Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com> | |
6 | * | |
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 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/thermal.h> | |
29 | ||
30 | #include "thermal_core.h" | |
31 | ||
32 | /** | |
33 | * notify_user_space - Notifies user space about thermal events | |
34 | * @tz - thermal_zone_device | |
35 | * | |
36 | * This function notifies the user space through UEvents. | |
37 | */ | |
e15cb144 | 38 | static int notify_user_space(struct thermal_zone_device *tz, int trip) |
1cc807a2 D |
39 | { |
40 | mutex_lock(&tz->lock); | |
41 | kobject_uevent(&tz->device.kobj, KOBJ_CHANGE); | |
42 | mutex_unlock(&tz->lock); | |
43 | return 0; | |
44 | } | |
45 | ||
e15cb144 | 46 | static struct thermal_governor thermal_gov_user_space = { |
1cc807a2 D |
47 | .name = "user_space", |
48 | .throttle = notify_user_space, | |
49 | .owner = THIS_MODULE, | |
50 | }; | |
51 | ||
52 | static int __init thermal_gov_user_space_init(void) | |
53 | { | |
54 | return thermal_register_governor(&thermal_gov_user_space); | |
55 | } | |
56 | ||
57 | static void __exit thermal_gov_user_space_exit(void) | |
58 | { | |
59 | thermal_unregister_governor(&thermal_gov_user_space); | |
60 | } | |
61 | ||
62 | /* This should load after thermal framework */ | |
63 | fs_initcall(thermal_gov_user_space_init); | |
64 | module_exit(thermal_gov_user_space_exit); | |
65 | ||
66 | MODULE_AUTHOR("Durgadoss R"); | |
67 | MODULE_DESCRIPTION("A user space Thermal notifier"); | |
68 | MODULE_LICENSE("GPL"); |