1/*
2 * governor.h - internal header for devfreq governors.
3 *
4 * Copyright (C) 2011 Samsung Electronics
5 *	MyungJoo Ham <myungjoo.ham@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This header is for devfreq governors in drivers/devfreq/
12 */
13
14#ifndef _GOVERNOR_H
15#define _GOVERNOR_H
16
17#include <linux/devfreq.h>
18
19#define to_devfreq(DEV)	container_of((DEV), struct devfreq, dev)
20
21/* Devfreq events */
22#define DEVFREQ_GOV_START			0x1
23#define DEVFREQ_GOV_STOP			0x2
24#define DEVFREQ_GOV_INTERVAL			0x3
25#define DEVFREQ_GOV_SUSPEND			0x4
26#define DEVFREQ_GOV_RESUME			0x5
27
28/* Caution: devfreq->lock must be locked before calling update_devfreq */
29extern int update_devfreq(struct devfreq *devfreq);
30
31extern void devfreq_monitor_start(struct devfreq *devfreq);
32extern void devfreq_monitor_stop(struct devfreq *devfreq);
33extern void devfreq_monitor_suspend(struct devfreq *devfreq);
34extern void devfreq_monitor_resume(struct devfreq *devfreq);
35extern void devfreq_interval_update(struct devfreq *devfreq,
36					unsigned int *delay);
37
38extern int devfreq_add_governor(struct devfreq_governor *governor);
39extern int devfreq_remove_governor(struct devfreq_governor *governor);
40
41#endif /* _GOVERNOR_H */
42