diff --git a/modules/input/evdev/InputMapper.cpp b/modules/input/evdev/InputMapper.cpp
new file mode 100644
index 0000000..2353a9a
--- /dev/null
+++ b/modules/input/evdev/InputMapper.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "InputMapper.h"
+
+namespace android {
+
+InputReport* InputMapper::getInputReport() {
+    if (mReport) return mReport;
+    if (mInputReportDef == nullptr) return nullptr;
+    mReport = mInputReportDef->allocateReport();
+    return mReport;
+}
+
+}  // namespace android