diff options
Diffstat (limited to 'drivers/devfreq/governor.h')
| -rw-r--r-- | drivers/devfreq/governor.h | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h index ae4d0cc18359..2a52f97b542d 100644 --- a/drivers/devfreq/governor.h +++ b/drivers/devfreq/governor.h @@ -13,6 +13,8 @@ #include <linux/devfreq.h> +#define DEVFREQ_NAME_LEN 16 + #define to_devfreq(DEV) container_of((DEV), struct devfreq, dev) /* Devfreq events */ @@ -25,14 +27,32 @@ #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_interal 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_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. + * @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 @@ -50,8 +70,8 @@ struct devfreq_governor { struct list_head node; const char name[DEVFREQ_NAME_LEN]; - const unsigned int immutable; - const unsigned int interrupt_driven; + 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); @@ -67,6 +87,7 @@ 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); +int devfreq_update_target(struct devfreq *devfreq, unsigned long freq); static inline int devfreq_update_stats(struct devfreq *df) { |