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authorDurgadoss R <durgadoss.r@intel.com>2012-09-18 09:35:05 +0400
committerZhang Rui <rui.zhang@intel.com>2012-11-05 10:00:08 +0400
commitf2b4caafd4aa64c9438b0a94af78b127228e6905 (patch)
tree164004dabe45f3cf1d2c4575258e23c3907636fe /drivers/thermal
parent0c01ebbfd3caf1dc132e0d93c8e7e9f742839d94 (diff)
downloadlinux-f2b4caafd4aa64c9438b0a94af78b127228e6905.tar.xz
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: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/thermal_sys.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 64f3e9735316..a69f24c4414a 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -1369,6 +1369,24 @@ 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.