diff --git a/libs/vr/libvrflinger/hardware_composer.cpp b/libs/vr/libvrflinger/hardware_composer.cpp
index 188ac6b..b771538 100644
--- a/libs/vr/libvrflinger/hardware_composer.cpp
+++ b/libs/vr/libvrflinger/hardware_composer.cpp
@@ -1215,6 +1215,12 @@
   return Void();
 }
 
+Return<void> HardwareComposer::ComposerCallback::onSeamlessPossible(
+    Hwc2::Display /*display*/) {
+  LOG_ALWAYS_FATAL("Unexpected onSeamlessPossible callback");
+  return Void();
+}
+
 void HardwareComposer::ComposerCallback::SetVsyncService(
     const sp<VsyncService>& vsync_service) {
   std::lock_guard<std::mutex> lock(mutex_);
diff --git a/libs/vr/libvrflinger/hardware_composer.h b/libs/vr/libvrflinger/hardware_composer.h
index 8698814..bfce10b 100644
--- a/libs/vr/libvrflinger/hardware_composer.h
+++ b/libs/vr/libvrflinger/hardware_composer.h
@@ -381,6 +381,7 @@
     hardware::Return<void> onVsyncPeriodTimingChanged(
         Hwc2::Display display,
         const Hwc2::VsyncPeriodChangeTimeline& updatedTimeline) override;
+    hardware::Return<void> onSeamlessPossible(Hwc2::Display display) override;
 
     bool GotFirstHotplug() { return got_first_hotplug_; }
     void SetVsyncService(const sp<VsyncService>& vsync_service);
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index 8b532e3..e7cf5ff 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -76,6 +76,7 @@
     virtual void onVsyncPeriodTimingChangedReceived(
             int32_t sequenceId, hwc2_display_t display,
             const hwc_vsync_period_change_timeline_t& updatedTimeline) = 0;
+    virtual void onSeamlessPossible(int32_t sequenceId, hwc2_display_t display) = 0;
 
     virtual ~ComposerCallback() = default;
 };
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 0a7009b..1960f43 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -125,6 +125,11 @@
         return android::hardware::Void();
     }
 
+    android::hardware::Return<void> onSeamlessPossible(android::Hwc2::Display display) override {
+        mCallback->onSeamlessPossible(mSequenceId, display);
+        return android::hardware::Void();
+    }
+
 private:
     HWC2::ComposerCallback* mCallback;
     const int32_t mSequenceId;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 8c1d168..004240b 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1570,6 +1570,11 @@
     mScheduler->onNewVsyncPeriodChangeTimeline(updatedTimeline);
 }
 
+void SurfaceFlinger::onSeamlessPossible(int32_t /*sequenceId*/, hwc2_display_t /*display*/) {
+    // TODO(b/142753666): use constraints when calling to setActiveConfigWithConstrains and
+    // use this callback to know when to retry in case of SEAMLESS_NOT_POSSIBLE.
+}
+
 void SurfaceFlinger::onRefreshReceived(int sequenceId, hwc2_display_t /*hwcDisplayId*/) {
     Mutex::Autolock lock(mStateLock);
     if (sequenceId != getBE().mComposerSequenceId) {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 2f84b13..dcd9dc2 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -505,6 +505,7 @@
     void onVsyncPeriodTimingChangedReceived(
             int32_t sequenceId, hwc2_display_t display,
             const hwc_vsync_period_change_timeline_t& updatedTimeline) override;
+    void onSeamlessPossible(int32_t sequenceId, hwc2_display_t display) override;
 
     /* ------------------------------------------------------------------------
      * ISchedulerCallback