Merge "Setting the display state to off when the default display is being changed" into tm-qpr-dev (3284b2ae) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/display/DisplayPowerController.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -818,8 +818,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
		loadFromDisplayDeviceConfig(token, info);

		// Since the underlying display-device changed, we really don't know the
		// last command that was sent to change it's state. Lets assume it is unknown so
		// that we trigger a change immediately.
		// last command that was sent to change it's state. Lets assume it is off and we
		// trigger a change immediately.
		mPowerState.resetScreenState();
		}
		if (mIsEnabled != isEnabled \|\| mIsInTransition != isInTransition) {

+11 −3

Original line number	Diff line number	Diff line
		@@ -340,12 +340,20 @@ final class DisplayPowerState {
		}

		/**
		* Resets the screen state to unknown. Useful when the underlying display-device changes for the
		* LogicalDisplay and we do not know the last state that was sent to it.
		* Resets the screen state to {@link Display#STATE_OFF}. Even though we do not know the last
		* state that was sent to the underlying display-device, we assume it is off.
		*
		* We do not set the screen state to {@link Display#STATE_UNKNOWN} to avoid getting in the state
		* where PhotonicModulator holds onto the lock. This happens because we currently try to keep
		* the mScreenState and mPendingState in sync, however if the screenState is set to
		* {@link Display#STATE_UNKNOWN} here, mPendingState will get progressed to this, which will
		* force the PhotonicModulator thread to wait onto the lock to take it out of that state.
		* b/262294651 for more info.
		*/
		void resetScreenState() {
		mScreenState = Display.STATE_UNKNOWN;
		mScreenState = Display.STATE_OFF;
		mScreenReady = false;
		scheduleScreenUpdate();
		}

		private void scheduleScreenUpdate() {