Update LANE_CENTERING_ASSIST_ENABLED documentation in HAL
Temporary errors should be conveyed through ErrorState values in the
STATE property.
Bug: 264946042
Test: presubmit
Change-Id: Idfd427fb69948f81307c29acd6285826e2cada99
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
index 400c1ce..d8ffece 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -3643,6 +3643,11 @@
* drifts toward or over the lane marking. If an unintentional lane departure is detected, the
* system applies steering control to return the vehicle into the current lane.
*
+ * In general, LANE_CENTERING_ASSIST_ENABLED should always return true or false. If the feature
+ * is not available due to some temporary state, such as the vehicle speed being too low or too
+ * high, that information must be conveyed through the ErrorState values in the
+ * LANE_CENTERING_ASSIST_STATE property.
+ *
* This property is defined as read_write, but OEMs have the option to implement it as read
* only.
*