mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.6 KiB
75 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* governor.h - internal header for devfreq governors. |
|
* |
|
* Copyright (C) 2011 Samsung Electronics |
|
* MyungJoo Ham <[email protected]> |
|
* |
|
* This header is for devfreq governors in drivers/devfreq/ |
|
*/ |
|
|
|
#ifndef _GOVERNOR_H |
|
#define _GOVERNOR_H |
|
|
|
#include <linux/devfreq.h> |
|
|
|
#define to_devfreq(DEV) container_of((DEV), struct devfreq, dev) |
|
|
|
/* Devfreq events */ |
|
#define DEVFREQ_GOV_START 0x1 |
|
#define DEVFREQ_GOV_STOP 0x2 |
|
#define DEVFREQ_GOV_UPDATE_INTERVAL 0x3 |
|
#define DEVFREQ_GOV_SUSPEND 0x4 |
|
#define DEVFREQ_GOV_RESUME 0x5 |
|
|
|
#define DEVFREQ_MIN_FREQ 0 |
|
#define DEVFREQ_MAX_FREQ ULONG_MAX |
|
|
|
/** |
|
* struct devfreq_governor - Devfreq policy governor |
|
* @node: list node - contains registered devfreq governors |
|
* @name: Governor's name |
|
* @immutable: Immutable flag for governor. If the value is 1, |
|
* this governor is never changeable to other governor. |
|
* @interrupt_driven: Devfreq core won't schedule polling work for this |
|
* governor if value is set to 1. |
|
* @get_target_freq: Returns desired operating frequency for the device. |
|
* Basically, get_target_freq will run |
|
* devfreq_dev_profile.get_dev_status() to get the |
|
* status of the device (load = busy_time / total_time). |
|
* If no_central_polling is set, this callback is called |
|
* only with update_devfreq() notified by OPP. |
|
* @event_handler: Callback for devfreq core framework to notify events |
|
* to governors. Events include per device governor |
|
* init and exit, opp changes out of devfreq, suspend |
|
* and resume of per device devfreq during device idle. |
|
* |
|
* Note that the callbacks are called with devfreq->lock locked by devfreq. |
|
*/ |
|
struct devfreq_governor { |
|
struct list_head node; |
|
|
|
const char name[DEVFREQ_NAME_LEN]; |
|
const unsigned int immutable; |
|
const unsigned int interrupt_driven; |
|
int (*get_target_freq)(struct devfreq *this, unsigned long *freq); |
|
int (*event_handler)(struct devfreq *devfreq, |
|
unsigned int event, void *data); |
|
}; |
|
|
|
void devfreq_monitor_start(struct devfreq *devfreq); |
|
void devfreq_monitor_stop(struct devfreq *devfreq); |
|
void devfreq_monitor_suspend(struct devfreq *devfreq); |
|
void devfreq_monitor_resume(struct devfreq *devfreq); |
|
void devfreq_update_interval(struct devfreq *devfreq, unsigned int *delay); |
|
|
|
int devfreq_add_governor(struct devfreq_governor *governor); |
|
int devfreq_remove_governor(struct devfreq_governor *governor); |
|
|
|
int devfreq_update_status(struct devfreq *devfreq, unsigned long freq); |
|
|
|
static inline int devfreq_update_stats(struct devfreq *df) |
|
{ |
|
return df->profile->get_dev_status(df->dev.parent, &df->last_status); |
|
} |
|
#endif /* _GOVERNOR_H */
|
|
|