diff --git a/camera/common/1.0/default/CameraModule.cpp b/camera/common/1.0/default/CameraModule.cpp
index 08354b3..3e3ef43 100644
--- a/camera/common/1.0/default/CameraModule.cpp
+++ b/camera/common/1.0/default/CameraModule.cpp
@@ -462,6 +462,17 @@
     return res;
 }
 
+void CameraModule::notifyDeviceStateChange(uint64_t deviceState) {
+   if (getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_5 &&
+           mModule->notify_device_state_change != NULL) {
+       ATRACE_BEGIN("camera_module->notify_device_state_change");
+       ALOGI("%s: calling notify_device_state_change with state %" PRId64, __FUNCTION__,
+               deviceState);
+       mModule->notify_device_state_change(deviceState);
+       ATRACE_END();
+   }
+}
+
 status_t CameraModule::filterOpenErrorCode(status_t err) {
     switch(err) {
         case NO_ERROR:
diff --git a/camera/common/1.0/default/include/CameraModule.h b/camera/common/1.0/default/include/CameraModule.h
index ee75e72..32c387f 100644
--- a/camera/common/1.0/default/include/CameraModule.h
+++ b/camera/common/1.0/default/include/CameraModule.h
@@ -67,6 +67,7 @@
     void removeCamera(int cameraId);
     int getPhysicalCameraInfo(int physicalCameraId, camera_metadata_t **physicalInfo);
     int isStreamCombinationSupported(int cameraId, camera_stream_combination_t *streams);
+    void notifyDeviceStateChange(uint64_t deviceState);
 
 private:
     // Derive camera characteristics keys defined after HAL device version