diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index 400daf0..247dc8d 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -860,6 +860,59 @@
         }
         return reply.readInt32();
     }
+
+    virtual status_t getDisplayBrightnessSupport(const sp<IBinder>& displayToken,
+                                                 bool* outSupport) const {
+        Parcel data, reply;
+        status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (error != NO_ERROR) {
+            ALOGE("getDisplayBrightnessSupport: failed to write interface token: %d", error);
+            return error;
+        }
+        error = data.writeStrongBinder(displayToken);
+        if (error != NO_ERROR) {
+            ALOGE("getDisplayBrightnessSupport: failed to write display token: %d", error);
+            return error;
+        }
+        error = remote()->transact(BnSurfaceComposer::GET_DISPLAY_BRIGHTNESS_SUPPORT, data, &reply);
+        if (error != NO_ERROR) {
+            ALOGE("getDisplayBrightnessSupport: failed to transact: %d", error);
+            return error;
+        }
+        bool support;
+        error = reply.readBool(&support);
+        if (error != NO_ERROR) {
+            ALOGE("getDisplayBrightnessSupport: failed to read support: %d", error);
+            return error;
+        }
+        *outSupport = support;
+        return NO_ERROR;
+    }
+
+    virtual status_t setDisplayBrightness(const sp<IBinder>& displayToken, float brightness) const {
+        Parcel data, reply;
+        status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (error != NO_ERROR) {
+            ALOGE("setDisplayBrightness: failed to write interface token: %d", error);
+            return error;
+        }
+        error = data.writeStrongBinder(displayToken);
+        if (error != NO_ERROR) {
+            ALOGE("setDisplayBrightness: failed to write display token: %d", error);
+            return error;
+        }
+        error = data.writeFloat(brightness);
+        if (error != NO_ERROR) {
+            ALOGE("setDisplayBrightness: failed to write brightness: %d", error);
+            return error;
+        }
+        error = remote()->transact(BnSurfaceComposer::SET_DISPLAY_BRIGHTNESS, data, &reply);
+        if (error != NO_ERROR) {
+            ALOGE("setDisplayBrightness: failed to transact: %d", error);
+            return error;
+        }
+        return NO_ERROR;
+    }
 };
 
 // Out-of-line virtual method definition to trigger vtable emission in this
@@ -1390,6 +1443,35 @@
             reply->writeInt32(result);
             return result;
         }
+        case GET_DISPLAY_BRIGHTNESS_SUPPORT: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<IBinder> displayToken;
+            status_t error = data.readNullableStrongBinder(&displayToken);
+            if (error != NO_ERROR) {
+                ALOGE("getDisplayBrightnessSupport: failed to read display token: %d", error);
+                return error;
+            }
+            bool support = false;
+            error = getDisplayBrightnessSupport(displayToken, &support);
+            reply->writeBool(support);
+            return error;
+        }
+        case SET_DISPLAY_BRIGHTNESS: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<IBinder> displayToken;
+            status_t error = data.readNullableStrongBinder(&displayToken);
+            if (error != NO_ERROR) {
+                ALOGE("setDisplayBrightness: failed to read display token: %d", error);
+                return error;
+            }
+            float brightness = -1.0f;
+            error = data.readFloat(&brightness);
+            if (error != NO_ERROR) {
+                ALOGE("setDisplayBrightness: failed to read brightness: %d", error);
+                return error;
+            }
+            return setDisplayBrightness(displayToken, brightness);
+        }
         default: {
             return BBinder::onTransact(code, data, reply, flags);
         }