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Commit f2b4caaf authored by Durgadoss R's avatar Durgadoss R Committed by Zhang Rui
Browse files

Thermal: Add a notification API 



This patch adds a notification API which the sensor drivers'
can use to notify the framework. The framework then takes
care of the throttling according to the configured policy.

Signed-off-by: default avatarDurgadoss R <durgadoss.r@intel.com>
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent 0c01ebbf

drivers/thermal/thermal_sys.c

+18 −0
Original line number Original line Diff line number Diff line
@@ -1368,6 +1368,24 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev) 
}

}

EXPORT_SYMBOL(thermal_cdev_update);

EXPORT_SYMBOL(thermal_cdev_update);





/**

 * notify_thermal_framework - Sensor drivers use this API to notify framework

 * @tz:		thermal zone device

 * @trip:	indicates which trip point has been crossed

 *

 * This function handles the trip events from sensor drivers. It starts

 * throttling the cooling devices according to the policy configured.

 * For CRITICAL and HOT trip points, this notifies the respective drivers,

 * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.

 * The throttling policy is based on the configured platform data; if no

 * platform data is provided, this uses the step_wise throttling policy.

 */

void notify_thermal_framework(struct thermal_zone_device *tz, int trip)

{

	handle_thermal_trip(tz, trip);

}

EXPORT_SYMBOL(notify_thermal_framework);



/**

/**

 * create_trip_attrs - create attributes for trip points

 * create_trip_attrs - create attributes for trip points

 * @tz:		the thermal zone device

 * @tz:		the thermal zone device

include/linux/thermal.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -232,6 +232,7 @@ int get_tz_trend(struct thermal_zone_device *, int); 
struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,

struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,

		struct thermal_cooling_device *, int);

		struct thermal_cooling_device *, int);

void thermal_cdev_update(struct thermal_cooling_device *);

void thermal_cdev_update(struct thermal_cooling_device *);

void notify_thermal_framework(struct thermal_zone_device *, int);





int thermal_register_governor(struct thermal_governor *);

int thermal_register_governor(struct thermal_governor *);

void thermal_unregister_governor(struct thermal_governor *);

void thermal_unregister_governor(struct thermal_governor *);