diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 337f89d..31152c4 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -876,6 +876,21 @@
     return NO_ERROR;
 }
 
+status_t SurfaceFlinger::getDisplayViewport(const sp<IBinder>& display, Rect* outViewport) {
+    if (outViewport == nullptr || display.get() == nullptr) {
+        return BAD_VALUE;
+    }
+
+    sp<const DisplayDevice> device(getDisplayDevice(display));
+    if (device == nullptr) {
+        return BAD_VALUE;
+    }
+
+    *outViewport = device->getViewport();
+
+    return NO_ERROR;
+}
+
 int SurfaceFlinger::getActiveConfig(const sp<IBinder>& displayToken) {
     const auto display = getDisplayDevice(displayToken);
     if (!display) {
@@ -4483,6 +4498,7 @@
         case GET_DISPLAY_COLOR_MODES:
         case GET_DISPLAY_CONFIGS:
         case GET_DISPLAY_STATS:
+        case GET_DISPLAY_VIEWPORT:
         case GET_SUPPORTED_FRAME_TIMESTAMPS:
         // Calling setTransactionState is safe, because you need to have been
         // granted a reference to Client* and Handle* to do anything with it.
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index f5d8eb4..273ce22 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -431,6 +431,7 @@
     virtual status_t captureLayers(const sp<IBinder>& parentHandle, sp<GraphicBuffer>* outBuffer,
                                    const Rect& sourceCrop, float frameScale, bool childrenOnly);
     virtual status_t getDisplayStats(const sp<IBinder>& displayToken, DisplayStatInfo* stats);
+    virtual status_t getDisplayViewport(const sp<IBinder>& display, Rect* outViewport);
     virtual status_t getDisplayConfigs(const sp<IBinder>& displayToken,
                                        Vector<DisplayInfo>* configs);
     virtual int getActiveConfig(const sp<IBinder>& displayToken);