diff options
Diffstat (limited to 'drivers/devfreq/governor.h')
| -rw-r--r-- | drivers/devfreq/governor.h | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h deleted file mode 100644 index 0adfebc0467a..000000000000 --- a/drivers/devfreq/governor.h +++ /dev/null @@ -1,127 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * governor.h - internal header for devfreq governors. - * - * Copyright (C) 2011 Samsung Electronics - * MyungJoo Ham <myungjoo.ham@samsung.com> - * - * This header is for devfreq governors in drivers/devfreq/ - */ - -#ifndef _GOVERNOR_H -#define _GOVERNOR_H - -#include <linux/devfreq.h> - -#define DEVFREQ_NAME_LEN 16 - -#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 - -/* - * Definition of the governor feature flags - * - DEVFREQ_GOV_FLAG_IMMUTABLE - * : This governor is never changeable to other governors. - * - DEVFREQ_GOV_FLAG_IRQ_DRIVEN - * : The devfreq won't schedule the work for this governor. - */ -#define DEVFREQ_GOV_FLAG_IMMUTABLE BIT(0) -#define DEVFREQ_GOV_FLAG_IRQ_DRIVEN BIT(1) - -/* - * Definition of governor attribute flags except for common sysfs attributes - * - DEVFREQ_GOV_ATTR_POLLING_INTERVAL - * : Indicate polling_interval sysfs attribute - * - DEVFREQ_GOV_ATTR_TIMER - * : Indicate timer sysfs attribute - */ -#define DEVFREQ_GOV_ATTR_POLLING_INTERVAL BIT(0) -#define DEVFREQ_GOV_ATTR_TIMER BIT(1) - -/** - * struct devfreq_cpu_data - Hold the per-cpu data - * @node: list node - * @dev: reference to cpu device. - * @first_cpu: the cpumask of the first cpu of a policy. - * @opp_table: reference to cpu opp table. - * @cur_freq: the current frequency of the cpu. - * @min_freq: the min frequency of the cpu. - * @max_freq: the max frequency of the cpu. - * - * This structure stores the required cpu_data of a cpu. - * This is auto-populated by the governor. - */ -struct devfreq_cpu_data { - struct list_head node; - - struct device *dev; - unsigned int first_cpu; - - struct opp_table *opp_table; - unsigned int cur_freq; - unsigned int min_freq; - unsigned int max_freq; -}; - -/** - * struct devfreq_governor - Devfreq policy governor - * @node: list node - contains registered devfreq governors - * @name: Governor's name - * @attrs: Governor's sysfs attribute flags - * @flags: Governor's feature flags - * @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). - * @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 u64 attrs; - const u64 flags; - 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 devm_devfreq_add_governor(struct device *dev, - struct devfreq_governor *governor); - -int devfreq_update_status(struct devfreq *devfreq, unsigned long freq); -int devfreq_update_target(struct devfreq *devfreq, unsigned long freq); -void devfreq_get_freq_range(struct devfreq *devfreq, unsigned long *min_freq, - unsigned long *max_freq); - -static inline int devfreq_update_stats(struct devfreq *df) -{ - if (!df->profile->get_dev_status) - return -EINVAL; - - return df->profile->get_dev_status(df->dev.parent, &df->last_status); -} -#endif /* _GOVERNOR_H */ |