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#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 */
35static int notify_user_space(struct thermal_zone_device *tz, int trip)
36{
37	mutex_lock(&tz->lock);
38	kobject_uevent(&tz->device.kobj, KOBJ_CHANGE);
39	mutex_unlock(&tz->lock);
40	return 0;
41}
42
43static struct thermal_governor thermal_gov_user_space = {
44	.name		= "user_space",
45	.throttle	= notify_user_space,
46};
47
48int thermal_gov_user_space_register(void)
49{
50	return thermal_register_governor(&thermal_gov_user_space);
51}
52
53void thermal_gov_user_space_unregister(void)
54{
55	thermal_unregister_governor(&thermal_gov_user_space);
56}
57
58