diff --git a/BoardConfig.mk b/BoardConfig.mk
index 3c63fff..706775a 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -85,6 +85,9 @@ TARGET_FS_CONFIG_GEN := $(DEVICE_PATH)/configs/config.fs
 BOARD_HAVE_QCOM_FM := true
 TARGET_QCOM_NO_FM_FIRMWARE := true
 
+# FOD
+TARGET_SURFACEFLINGER_FOD_LIB := //$(DEVICE_PATH):libfod_extension.davinci
+
 # HIDL
 DEVICE_MANIFEST_FILE := $(DEVICE_PATH)/configs/hidl/manifest.xml
 DEVICE_MATRIX_FILE := $(DEVICE_PATH)/configs/hidl/compatibility_matrix.xml
diff --git a/fod/Android.bp b/fod/Android.bp
index 8113acc..3847756 100644
--- a/fod/Android.bp
+++ b/fod/Android.bp
@@ -37,3 +37,11 @@ cc_binary {
         "vendor.xiaomi.hardware.fingerprintextension@1.0",
     ],
 }
+
+cc_library_static {
+    name: "libfod_extension.davinci",
+    srcs: ["FodExtension.cpp"],
+    include_dirs: [
+        "frameworks/native/services/surfaceflinger/CompositionEngine/include"
+    ],
+}
diff --git a/fod/FodExtension.cpp b/fod/FodExtension.cpp
new file mode 100644
index 0000000..cc5d64d
--- /dev/null
+++ b/fod/FodExtension.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2020 The LineageOS 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 <compositionengine/FodExtension.h>
+
+uint32_t getFodZOrder(uint32_t z, bool touched) {
+    if (touched) {
+        z |= 0x20000000u;
+    }
+
+    return z;
+}
+
+uint64_t getFodUsageBits(uint64_t usageBits, bool touched) {
+    (void) touched;
+    return usageBits;
+}