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 */ 29 extern int update_devfreq(struct devfreq *devfreq); 30 31 extern void devfreq_monitor_start(struct devfreq *devfreq); 32 extern void devfreq_monitor_stop(struct devfreq *devfreq); 33 extern void devfreq_monitor_suspend(struct devfreq *devfreq); 34 extern void devfreq_monitor_resume(struct devfreq *devfreq); 35 extern void devfreq_interval_update(struct devfreq *devfreq, 36 unsigned int *delay); 37 38 extern int devfreq_add_governor(struct devfreq_governor *governor); 39 extern int devfreq_remove_governor(struct devfreq_governor *governor); 40 41 #endif /* _GOVERNOR_H */ 42