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Durgadoss R1cc807a2012-09-18 11:05:03 +05301/*
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
Durgadoss R1cc807a2012-09-18 11:05:03 +053025#include <linux/thermal.h>
26
27#include "thermal_core.h"
28
29/**
30 * notify_user_space - Notifies user space about thermal events
31 * @tz - thermal_zone_device
32 *
33 * This function notifies the user space through UEvents.
34 */
Sachin Kamate15cb142012-09-27 16:57:54 +053035static int notify_user_space(struct thermal_zone_device *tz, int trip)
Durgadoss R1cc807a2012-09-18 11:05:03 +053036{
37 mutex_lock(&tz->lock);
38 kobject_uevent(&tz->device.kobj, KOBJ_CHANGE);
39 mutex_unlock(&tz->lock);
40 return 0;
41}
42
Sachin Kamate15cb142012-09-27 16:57:54 +053043static struct thermal_governor thermal_gov_user_space = {
Durgadoss R1cc807a2012-09-18 11:05:03 +053044 .name = "user_space",
45 .throttle = notify_user_space,
Durgadoss R1cc807a2012-09-18 11:05:03 +053046};
47
Zhang Rui80a26a52013-03-26 16:38:29 +080048int thermal_gov_user_space_register(void)
Durgadoss R1cc807a2012-09-18 11:05:03 +053049{
50 return thermal_register_governor(&thermal_gov_user_space);
51}
52
Zhang Rui80a26a52013-03-26 16:38:29 +080053void thermal_gov_user_space_unregister(void)
Durgadoss R1cc807a2012-09-18 11:05:03 +053054{
55 thermal_unregister_governor(&thermal_gov_user_space);
56}
57