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