diff --git a/libs/gui/Choreographer.cpp b/libs/gui/Choreographer.cpp
index 93df124..c6f3363 100644
--- a/libs/gui/Choreographer.cpp
+++ b/libs/gui/Choreographer.cpp
@@ -344,6 +344,10 @@
     handleRefreshRateUpdates();
 }
 
+void Choreographer::dispatchHdcpLevelsChanged(PhysicalDisplayId, int32_t, int32_t) {
+    LOG_ALWAYS_FATAL("dispatchHdcpLevelsChanged was called but was never registered");
+}
+
 void Choreographer::handleMessage(const Message& message) {
     switch (message.what) {
         case MSG_SCHEDULE_CALLBACKS:
diff --git a/libs/gui/DisplayEventDispatcher.cpp b/libs/gui/DisplayEventDispatcher.cpp
index 5dd058c..f3de96d 100644
--- a/libs/gui/DisplayEventDispatcher.cpp
+++ b/libs/gui/DisplayEventDispatcher.cpp
@@ -195,6 +195,11 @@
                     dispatchFrameRateOverrides(ev.header.timestamp, ev.header.displayId,
                                                std::move(mFrameRateOverrides));
                     break;
+                case DisplayEventReceiver::DISPLAY_EVENT_HDCP_LEVELS_CHANGE:
+                    dispatchHdcpLevelsChanged(ev.header.displayId,
+                                              ev.hdcpLevelsChange.connectedLevel,
+                                              ev.hdcpLevelsChange.maxLevel);
+                    break;
                 default:
                     ALOGW("dispatcher %p ~ ignoring unknown event type %#x", this, ev.header.type);
                     break;
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 8b6f202..8d18551 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -3117,7 +3117,6 @@
             ->removeWindowInfosListener(windowInfosListener,
                                         ComposerServiceAIDL::getComposerService());
 }
-
 // ----------------------------------------------------------------------------
 
 status_t ScreenshotClient::captureDisplay(const DisplayCaptureArgs& captureArgs,
diff --git a/libs/gui/fuzzer/libgui_fuzzer_utils.h b/libs/gui/fuzzer/libgui_fuzzer_utils.h
index 9933680..c952ba2 100644
--- a/libs/gui/fuzzer/libgui_fuzzer_utils.h
+++ b/libs/gui/fuzzer/libgui_fuzzer_utils.h
@@ -207,6 +207,7 @@
     MOCK_METHOD2(dispatchNullEvent, void(nsecs_t, PhysicalDisplayId));
     MOCK_METHOD3(dispatchFrameRateOverrides,
                  void(nsecs_t, PhysicalDisplayId, std::vector<FrameRateOverride>));
+    MOCK_METHOD3(dispatchHdcpLevelsChanged, void(PhysicalDisplayId, int32_t, int32_t));
 };
 
 } // namespace android
diff --git a/libs/gui/include/gui/Choreographer.h b/libs/gui/include/gui/Choreographer.h
index 9fef512..55a7aa7 100644
--- a/libs/gui/include/gui/Choreographer.h
+++ b/libs/gui/include/gui/Choreographer.h
@@ -116,6 +116,8 @@
     void dispatchNullEvent(nsecs_t, PhysicalDisplayId) override;
     void dispatchFrameRateOverrides(nsecs_t timestamp, PhysicalDisplayId displayId,
                                     std::vector<FrameRateOverride> overrides) override;
+    void dispatchHdcpLevelsChanged(PhysicalDisplayId displayId, int32_t connectedLevel,
+                                   int32_t maxLevel) override;
 
     void scheduleCallbacks();
 
diff --git a/libs/gui/include/gui/DisplayEventDispatcher.h b/libs/gui/include/gui/DisplayEventDispatcher.h
index fe2dd20..82cd50c 100644
--- a/libs/gui/include/gui/DisplayEventDispatcher.h
+++ b/libs/gui/include/gui/DisplayEventDispatcher.h
@@ -65,6 +65,9 @@
     virtual void dispatchFrameRateOverrides(nsecs_t timestamp, PhysicalDisplayId displayId,
                                             std::vector<FrameRateOverride> overrides) = 0;
 
+    virtual void dispatchHdcpLevelsChanged(PhysicalDisplayId displayId, int32_t connectedLevel,
+                                           int32_t maxLevel) = 0;
+
     bool processPendingEvents(nsecs_t* outTimestamp, PhysicalDisplayId* outDisplayId,
                               uint32_t* outCount, VsyncEventData* outVsyncEventData);
 
diff --git a/libs/gui/include/gui/DisplayEventReceiver.h b/libs/gui/include/gui/DisplayEventReceiver.h
index 79582ce..8c1103b 100644
--- a/libs/gui/include/gui/DisplayEventReceiver.h
+++ b/libs/gui/include/gui/DisplayEventReceiver.h
@@ -58,7 +58,6 @@
 // ----------------------------------------------------------------------------
 class DisplayEventReceiver {
 public:
-
     enum {
         DISPLAY_EVENT_VSYNC = fourcc('v', 's', 'y', 'n'),
         DISPLAY_EVENT_HOTPLUG = fourcc('p', 'l', 'u', 'g'),
@@ -66,6 +65,7 @@
         DISPLAY_EVENT_NULL = fourcc('n', 'u', 'l', 'l'),
         DISPLAY_EVENT_FRAME_RATE_OVERRIDE = fourcc('r', 'a', 't', 'e'),
         DISPLAY_EVENT_FRAME_RATE_OVERRIDE_FLUSH = fourcc('f', 'l', 's', 'h'),
+        DISPLAY_EVENT_HDCP_LEVELS_CHANGE = fourcc('h', 'd', 'c', 'p'),
     };
 
     struct Event {
@@ -101,12 +101,22 @@
             float frameRateHz __attribute__((aligned(8)));
         };
 
+        /*
+         * The values are defined in aidl:
+         * hardware/interfaces/drm/aidl/android/hardware/drm/HdcpLevel.aidl
+         */
+        struct HdcpLevelsChange {
+            int32_t connectedLevel;
+            int32_t maxLevel;
+        };
+
         Header header;
         union {
             VSync vsync;
             Hotplug hotplug;
             ModeChange modeChange;
             FrameRateOverride frameRateOverride;
+            HdcpLevelsChange hdcpLevelsChange;
         };
     };