[PATCHv2 12/14] Thermal: Add a notification API
From: Durgadoss R <hidden>
Date: 2012-08-27 04:29:28
Subsystem:
the rest, thermal · Maintainers:
Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
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: Durgadoss R <redacted> --- drivers/thermal/thermal_sys.c | 18 ++++++++++++++++++ include/linux/thermal.h | 1 + 2 files changed, 19 insertions(+)
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 3f96f3e..0f4cc04 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c@@ -1310,6 +1310,24 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev) 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 * @tz: the thermal zone device * @mask: Writeable trip point bitmap.
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index c7e0a4d..273ab0d 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h@@ -226,6 +226,7 @@ int get_tz_trend(struct thermal_zone_device *, int); struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, struct thermal_cooling_device *, int); void thermal_cdev_update(struct thermal_cooling_device *); +void notify_thermal_framework(struct thermal_zone_device *, int); /* * The platform layer shall define a 'function' that provides the
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1.7.9.5