diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0d20b64
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.pyc
diff --git a/cmds/servicemanager/main.cpp b/cmds/servicemanager/main.cpp
index c8ceb42..9f6193b 100644
--- a/cmds/servicemanager/main.cpp
+++ b/cmds/servicemanager/main.cpp
@@ -38,14 +38,13 @@
 
     android::base::InitLogging(nullptr, &android::base::KernelLogger);
 
-    ProcessState::self()->initWithDriver(driver);
-    ProcessState::self()->setThreadPoolMaxThreadCount(0);
-    ProcessState::self()->setCallRestriction(
-        ProcessState::CallRestriction::FATAL_IF_NOT_ONEWAY);
+    sp<ProcessState> ps = ProcessState::initWithDriver(driver);
+    ps->setThreadPoolMaxThreadCount(0);
+    ps->setCallRestriction(ProcessState::CallRestriction::FATAL_IF_NOT_ONEWAY);
 
     sp<ServiceManager> manager = new ServiceManager(std::make_unique<Access>());
     IPCThreadState::self()->setTheContextObject(manager);
-    ProcessState::self()->becomeContextManager(nullptr, nullptr);
+    ps->becomeContextManager(nullptr, nullptr);
 
     IPCThreadState::self()->joinThreadPool();
 
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 2d156df..b25cd7b 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -466,7 +466,7 @@
         }
     }
 
-    LOG_ALWAYS_FATAL_IF(mDriverFD < 0, "Binder driver could not be opened.  Terminating.");
+    LOG_ALWAYS_FATAL_IF(mDriverFD < 0, "Binder driver '%s' could not be opened.  Terminating.", driver);
 }
 
 ProcessState::~ProcessState()
diff --git a/libs/binder/tests/Android.bp b/libs/binder/tests/Android.bp
index c451780..3e005c9 100644
--- a/libs/binder/tests/Android.bp
+++ b/libs/binder/tests/Android.bp
@@ -26,28 +26,28 @@
 
 cc_test {
     name: "binderDriverInterfaceTest_IPC_32",
-    srcs: ["binderDriverInterfaceTest.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["binderDriverInterfaceTest.cpp"],
     compile_multilib: "32",
     cflags: ["-DBINDER_IPC_32BIT=1"],
 }
 
 cc_test {
+    name: "binderDriverInterfaceTest",
+    defaults: ["binder_test_defaults"],
     product_variables: {
         binder32bit: {
             cflags: ["-DBINDER_IPC_32BIT=1"],
         },
     },
 
-    name: "binderDriverInterfaceTest",
     srcs: ["binderDriverInterfaceTest.cpp"],
-    defaults: ["binder_test_defaults"],
 }
 
 cc_test {
     name: "binderValueTypeTest",
-    srcs: ["binderValueTypeTest.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["binderValueTypeTest.cpp"],
     shared_libs: [
         "libbinder",
         "libutils",
@@ -56,8 +56,8 @@
 
 cc_test {
     name: "binderLibTest_IPC_32",
-    srcs: ["binderLibTest.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["binderLibTest.cpp"],
     shared_libs: [
         "libbinder",
         "libutils",
@@ -67,14 +67,14 @@
 }
 
 cc_test {
+    name: "binderLibTest",
+    defaults: ["binder_test_defaults"],
     product_variables: {
         binder32bit: {
             cflags: ["-DBINDER_IPC_32BIT=1"],
         },
     },
 
-    defaults: ["binder_test_defaults"],
-    name: "binderLibTest",
     srcs: ["binderLibTest.cpp"],
     shared_libs: [
         "libbinder",
@@ -84,8 +84,8 @@
 
 cc_test {
     name: "binderThroughputTest",
-    srcs: ["binderThroughputTest.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["binderThroughputTest.cpp"],
     shared_libs: [
         "libbinder",
         "libutils",
@@ -101,8 +101,8 @@
 
 cc_test {
     name: "binderTextOutputTest",
-    srcs: ["binderTextOutputTest.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["binderTextOutputTest.cpp"],
     shared_libs: [
         "libbinder",
         "libutils",
@@ -112,8 +112,8 @@
 
 cc_test {
     name: "schd-dbg",
-    srcs: ["schd-dbg.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["schd-dbg.cpp"],
     shared_libs: [
         "libbinder",
         "libutils",
@@ -123,8 +123,8 @@
 
 cc_test {
     name: "binderSafeInterfaceTest",
-    srcs: ["binderSafeInterfaceTest.cpp"],
     defaults: ["binder_test_defaults"],
+    srcs: ["binderSafeInterfaceTest.cpp"],
 
     cppflags: [
         "-Weverything",
diff --git a/libs/gui/include/gui/ITransactionCompletedListener.h b/libs/gui/include/gui/ITransactionCompletedListener.h
index 774ad46..cbfd365 100644
--- a/libs/gui/include/gui/ITransactionCompletedListener.h
+++ b/libs/gui/include/gui/ITransactionCompletedListener.h
@@ -106,6 +106,16 @@
                       const std::vector<CallbackId>& ids)
           : transactionCompletedListener(listener), callbackIds(ids) {}
 
+    bool operator==(const ListenerCallbacks& rhs) const {
+        if (transactionCompletedListener != rhs.transactionCompletedListener) {
+            return false;
+        }
+        if (callbackIds.empty()) {
+            return rhs.callbackIds.empty();
+        }
+        return callbackIds.front() == rhs.callbackIds.front();
+    }
+
     sp<ITransactionCompletedListener> transactionCompletedListener;
     std::vector<CallbackId> callbackIds;
 };
diff --git a/services/inputflinger/InputClassifierConverter.cpp b/services/inputflinger/InputClassifierConverter.cpp
index f82c8ef..fc8c7c3 100644
--- a/services/inputflinger/InputClassifierConverter.cpp
+++ b/services/inputflinger/InputClassifierConverter.cpp
@@ -358,6 +358,7 @@
     event.displayId = args.displayId;
     event.downTime = args.downTime;
     event.eventTime = args.eventTime;
+    event.deviceTimestamp = 0;
     event.action = getAction(args.action & AMOTION_EVENT_ACTION_MASK);
     event.actionIndex = getActionIndex(args.action);
     event.actionButton = getActionButton(args.actionButton);
@@ -375,7 +376,6 @@
     event.pointerProperties = pointerProperties;
     event.pointerCoords = pointerCoords;
 
-    event.deviceTimestamp = args.deviceTimestamp;
     event.frames = convertVideoFrames(args.videoFrames);
 
     return event;
diff --git a/services/inputflinger/InputListener.cpp b/services/inputflinger/InputListener.cpp
index 0498e87..de63977 100644
--- a/services/inputflinger/InputListener.cpp
+++ b/services/inputflinger/InputListener.cpp
@@ -92,10 +92,10 @@
         uint32_t sequenceNum, nsecs_t eventTime, int32_t deviceId, uint32_t source,
         int32_t displayId, uint32_t policyFlags, int32_t action, int32_t actionButton,
         int32_t flags, int32_t metaState, int32_t buttonState, MotionClassification classification,
-        int32_t edgeFlags, uint32_t deviceTimestamp, uint32_t pointerCount,
-        const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
-        float xPrecision, float yPrecision, float xCursorPosition, float yCursorPosition,
-        nsecs_t downTime, const std::vector<TouchVideoFrame>& videoFrames)
+        int32_t edgeFlags, uint32_t pointerCount, const PointerProperties* pointerProperties,
+        const PointerCoords* pointerCoords, float xPrecision, float yPrecision,
+        float xCursorPosition, float yCursorPosition, nsecs_t downTime,
+        const std::vector<TouchVideoFrame>& videoFrames)
       : NotifyArgs(sequenceNum, eventTime),
         deviceId(deviceId),
         source(source),
@@ -108,7 +108,6 @@
         buttonState(buttonState),
         classification(classification),
         edgeFlags(edgeFlags),
-        deviceTimestamp(deviceTimestamp),
         pointerCount(pointerCount),
         xPrecision(xPrecision),
         yPrecision(yPrecision),
@@ -135,7 +134,6 @@
         buttonState(other.buttonState),
         classification(other.classification),
         edgeFlags(other.edgeFlags),
-        deviceTimestamp(other.deviceTimestamp),
         pointerCount(other.pointerCount),
         xPrecision(other.xPrecision),
         yPrecision(other.yPrecision),
@@ -159,7 +157,7 @@
             policyFlags == rhs.policyFlags && action == rhs.action &&
             actionButton == rhs.actionButton && flags == rhs.flags && metaState == rhs.metaState &&
             buttonState == rhs.buttonState && classification == rhs.classification &&
-            edgeFlags == rhs.edgeFlags && deviceTimestamp == rhs.deviceTimestamp &&
+            edgeFlags == rhs.edgeFlags &&
             pointerCount == rhs.pointerCount
             // PointerProperties and PointerCoords are compared separately below
             && xPrecision == rhs.xPrecision && yPrecision == rhs.yPrecision &&
diff --git a/services/inputflinger/InputReader.cpp b/services/inputflinger/InputReader.cpp
index 9e59909..b4c6b33 100644
--- a/services/inputflinger/InputReader.cpp
+++ b/services/inputflinger/InputReader.cpp
@@ -1731,10 +1731,12 @@
 
 // --- MultiTouchMotionAccumulator ---
 
-MultiTouchMotionAccumulator::MultiTouchMotionAccumulator() :
-        mCurrentSlot(-1), mSlots(nullptr), mSlotCount(0), mUsingSlotsProtocol(false),
-        mHaveStylus(false), mDeviceTimestamp(0) {
-}
+MultiTouchMotionAccumulator::MultiTouchMotionAccumulator()
+      : mCurrentSlot(-1),
+        mSlots(nullptr),
+        mSlotCount(0),
+        mUsingSlotsProtocol(false),
+        mHaveStylus(false) {}
 
 MultiTouchMotionAccumulator::~MultiTouchMotionAccumulator() {
     delete[] mSlots;
@@ -1774,7 +1776,6 @@
     } else {
         clearSlots(-1);
     }
-    mDeviceTimestamp = 0;
 }
 
 void MultiTouchMotionAccumulator::clearSlots(int32_t initialSlot) {
@@ -1868,8 +1869,6 @@
     } else if (rawEvent->type == EV_SYN && rawEvent->code == SYN_MT_REPORT) {
         // MultiTouch Sync: The driver has returned all data for *one* of the pointers.
         mCurrentSlot += 1;
-    } else if (rawEvent->type == EV_MSC && rawEvent->code == MSC_TIMESTAMP) {
-        mDeviceTimestamp = rawEvent->value;
     }
 }
 
@@ -2849,8 +2848,7 @@
                                              mSource, displayId, policyFlags,
                                              AMOTION_EVENT_ACTION_BUTTON_RELEASE, actionButton, 0,
                                              metaState, buttonState, MotionClassification::NONE,
-                                             AMOTION_EVENT_EDGE_FLAG_NONE,
-                                             /* deviceTimestamp */ 0, 1, &pointerProperties,
+                                             AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
                                              &pointerCoords, mXPrecision, mYPrecision,
                                              xCursorPosition, yCursorPosition, downTime,
                                              /* videoFrames */ {});
@@ -2861,8 +2859,7 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, motionEventAction, 0, 0, metaState,
                               currentButtonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE,
-                              /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties, &pointerCoords,
                               mXPrecision, mYPrecision, xCursorPosition, yCursorPosition, downTime,
                               /* videoFrames */ {});
         getListener()->notifyMotion(&args);
@@ -2876,8 +2873,7 @@
                                            mSource, displayId, policyFlags,
                                            AMOTION_EVENT_ACTION_BUTTON_PRESS, actionButton, 0,
                                            metaState, buttonState, MotionClassification::NONE,
-                                           AMOTION_EVENT_EDGE_FLAG_NONE,
-                                           /* deviceTimestamp */ 0, 1, &pointerProperties,
+                                           AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
                                            &pointerCoords, mXPrecision, mYPrecision,
                                            xCursorPosition, yCursorPosition, downTime,
                                            /* videoFrames */ {});
@@ -2893,11 +2889,9 @@
             NotifyMotionArgs hoverArgs(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                                        displayId, policyFlags, AMOTION_EVENT_ACTION_HOVER_MOVE, 0,
                                        0, metaState, currentButtonState, MotionClassification::NONE,
-                                       AMOTION_EVENT_EDGE_FLAG_NONE,
-                                       /* deviceTimestamp */ 0, 1, &pointerProperties,
+                                       AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
                                        &pointerCoords, mXPrecision, mYPrecision, xCursorPosition,
-                                       yCursorPosition, downTime,
-                                       /* videoFrames */ {});
+                                       yCursorPosition, downTime, /* videoFrames */ {});
             getListener()->notifyMotion(&hoverArgs);
         }
 
@@ -2910,11 +2904,9 @@
                                         mSource, displayId, policyFlags,
                                         AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState,
                                         currentButtonState, MotionClassification::NONE,
-                                        AMOTION_EVENT_EDGE_FLAG_NONE,
-                                        /* deviceTimestamp */ 0, 1, &pointerProperties,
+                                        AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
                                         &pointerCoords, mXPrecision, mYPrecision, xCursorPosition,
-                                        yCursorPosition, downTime,
-                                        /* videoFrames */ {});
+                                        yCursorPosition, downTime, /* videoFrames */ {});
             getListener()->notifyMotion(&scrollArgs);
         }
     }
@@ -3057,9 +3049,8 @@
         NotifyMotionArgs scrollArgs(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                                     displayId, policyFlags, AMOTION_EVENT_ACTION_SCROLL, 0, 0,
                                     metaState, /* buttonState */ 0, MotionClassification::NONE,
-                                    AMOTION_EVENT_EDGE_FLAG_NONE,
-                                    /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
-                                    0, 0, AMOTION_EVENT_INVALID_CURSOR_POSITION,
+                                    AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
+                                    &pointerCoords, 0, 0, AMOTION_EVENT_INVALID_CURSOR_POSITION,
                                     AMOTION_EVENT_INVALID_CURSOR_POSITION, 0, /* videoFrames */ {});
         getListener()->notifyMotion(&scrollArgs);
     }
@@ -4781,7 +4772,6 @@
         int32_t buttonState = mCurrentCookedState.buttonState;
         dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_CANCEL, 0, 0,
                 metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-                mCurrentCookedState.deviceTimestamp,
                 mCurrentCookedState.cookedPointerData.pointerProperties,
                 mCurrentCookedState.cookedPointerData.pointerCoords,
                 mCurrentCookedState.cookedPointerData.idToIndex,
@@ -4804,7 +4794,6 @@
             dispatchMotion(when, policyFlags, mSource,
                     AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState, buttonState,
                     AMOTION_EVENT_EDGE_FLAG_NONE,
-                    mCurrentCookedState.deviceTimestamp,
                     mCurrentCookedState.cookedPointerData.pointerProperties,
                     mCurrentCookedState.cookedPointerData.pointerCoords,
                     mCurrentCookedState.cookedPointerData.idToIndex,
@@ -4839,7 +4828,6 @@
 
             dispatchMotion(when, policyFlags, mSource,
                     AMOTION_EVENT_ACTION_POINTER_UP, 0, 0, metaState, buttonState, 0,
-                    mCurrentCookedState.deviceTimestamp,
                     mLastCookedState.cookedPointerData.pointerProperties,
                     mLastCookedState.cookedPointerData.pointerCoords,
                     mLastCookedState.cookedPointerData.idToIndex,
@@ -4854,7 +4842,6 @@
             ALOG_ASSERT(moveIdBits.value == dispatchedIdBits.value);
             dispatchMotion(when, policyFlags, mSource,
                     AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState, buttonState, 0,
-                    mCurrentCookedState.deviceTimestamp,
                     mCurrentCookedState.cookedPointerData.pointerProperties,
                     mCurrentCookedState.cookedPointerData.pointerCoords,
                     mCurrentCookedState.cookedPointerData.idToIndex,
@@ -4873,7 +4860,6 @@
 
             dispatchMotion(when, policyFlags, mSource,
                     AMOTION_EVENT_ACTION_POINTER_DOWN, 0, 0, metaState, buttonState, 0,
-                    mCurrentCookedState.deviceTimestamp,
                     mCurrentCookedState.cookedPointerData.pointerProperties,
                     mCurrentCookedState.cookedPointerData.pointerCoords,
                     mCurrentCookedState.cookedPointerData.idToIndex,
@@ -4889,7 +4875,6 @@
         int32_t metaState = getContext()->getGlobalMetaState();
         dispatchMotion(when, policyFlags, mSource,
                 AMOTION_EVENT_ACTION_HOVER_EXIT, 0, 0, metaState, mLastCookedState.buttonState, 0,
-                mLastCookedState.deviceTimestamp,
                 mLastCookedState.cookedPointerData.pointerProperties,
                 mLastCookedState.cookedPointerData.pointerCoords,
                 mLastCookedState.cookedPointerData.idToIndex,
@@ -4906,7 +4891,6 @@
         if (!mSentHoverEnter) {
             dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_HOVER_ENTER,
                     0, 0, metaState, mCurrentRawState.buttonState, 0,
-                    mCurrentCookedState.deviceTimestamp,
                     mCurrentCookedState.cookedPointerData.pointerProperties,
                     mCurrentCookedState.cookedPointerData.pointerCoords,
                     mCurrentCookedState.cookedPointerData.idToIndex,
@@ -4918,7 +4902,6 @@
         dispatchMotion(when, policyFlags, mSource,
                 AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0, metaState,
                 mCurrentRawState.buttonState, 0,
-                mCurrentCookedState.deviceTimestamp,
                 mCurrentCookedState.cookedPointerData.pointerProperties,
                 mCurrentCookedState.cookedPointerData.pointerCoords,
                 mCurrentCookedState.cookedPointerData.idToIndex,
@@ -4938,7 +4921,6 @@
         dispatchMotion(when, policyFlags, mSource,
                     AMOTION_EVENT_ACTION_BUTTON_RELEASE, actionButton,
                     0, metaState, buttonState, 0,
-                    mCurrentCookedState.deviceTimestamp,
                     mCurrentCookedState.cookedPointerData.pointerProperties,
                     mCurrentCookedState.cookedPointerData.pointerCoords,
                     mCurrentCookedState.cookedPointerData.idToIndex, idBits, -1,
@@ -4956,7 +4938,6 @@
         buttonState |= actionButton;
         dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_BUTTON_PRESS, actionButton,
                     0, metaState, buttonState, 0,
-                    mCurrentCookedState.deviceTimestamp,
                     mCurrentCookedState.cookedPointerData.pointerProperties,
                     mCurrentCookedState.cookedPointerData.pointerCoords,
                     mCurrentCookedState.cookedPointerData.idToIndex, idBits, -1,
@@ -4975,8 +4956,6 @@
     uint32_t currentPointerCount = mCurrentRawState.rawPointerData.pointerCount;
 
     mCurrentCookedState.cookedPointerData.clear();
-    mCurrentCookedState.deviceTimestamp =
-            mCurrentRawState.deviceTimestamp;
     mCurrentCookedState.cookedPointerData.pointerCount = currentPointerCount;
     mCurrentCookedState.cookedPointerData.hoveringIdBits =
             mCurrentRawState.rawPointerData.hoveringIdBits;
@@ -5368,13 +5347,11 @@
     BitSet32 dispatchedGestureIdBits(mPointerGesture.lastGestureIdBits);
     if (!dispatchedGestureIdBits.isEmpty()) {
         if (cancelPreviousGesture) {
-            dispatchMotion(when, policyFlags, mSource,
-                    AMOTION_EVENT_ACTION_CANCEL, 0, 0, metaState, buttonState,
-                    AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0,
-                    mPointerGesture.lastGestureProperties,
-                    mPointerGesture.lastGestureCoords, mPointerGesture.lastGestureIdToIndex,
-                    dispatchedGestureIdBits, -1, 0,
-                    0, mPointerGesture.downTime);
+            dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_CANCEL, 0, 0, metaState,
+                           buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
+                           mPointerGesture.lastGestureProperties, mPointerGesture.lastGestureCoords,
+                           mPointerGesture.lastGestureIdToIndex, dispatchedGestureIdBits, -1, 0, 0,
+                           mPointerGesture.downTime);
 
             dispatchedGestureIdBits.clear();
         } else {
@@ -5391,7 +5368,6 @@
                 dispatchMotion(when, policyFlags, mSource,
                         AMOTION_EVENT_ACTION_POINTER_UP, 0, 0,
                         metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-                        /* deviceTimestamp */ 0,
                         mPointerGesture.lastGestureProperties,
                         mPointerGesture.lastGestureCoords, mPointerGesture.lastGestureIdToIndex,
                         dispatchedGestureIdBits, id,
@@ -5404,13 +5380,12 @@
 
     // Send motion events for all pointers that moved.
     if (moveNeeded) {
-        dispatchMotion(when, policyFlags, mSource,
-                AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState, buttonState,
-                AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0,
-                mPointerGesture.currentGestureProperties,
-                mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex,
-                dispatchedGestureIdBits, -1,
-                0, 0, mPointerGesture.downTime);
+        dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState,
+                       buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
+                       mPointerGesture.currentGestureProperties,
+                       mPointerGesture.currentGestureCoords,
+                       mPointerGesture.currentGestureIdToIndex, dispatchedGestureIdBits, -1, 0, 0,
+                       mPointerGesture.downTime);
     }
 
     // Send motion events for all pointers that went down.
@@ -5427,7 +5402,6 @@
 
             dispatchMotion(when, policyFlags, mSource,
                     AMOTION_EVENT_ACTION_POINTER_DOWN, 0, 0, metaState, buttonState, 0,
-                    /* deviceTimestamp */ 0,
                     mPointerGesture.currentGestureProperties,
                     mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex,
                     dispatchedGestureIdBits, id,
@@ -5437,13 +5411,12 @@
 
     // Send motion events for hover.
     if (mPointerGesture.currentGestureMode == PointerGesture::HOVER) {
-        dispatchMotion(when, policyFlags, mSource,
-                AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0,
-                metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0,
-                mPointerGesture.currentGestureProperties,
-                mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex,
-                mPointerGesture.currentGestureIdBits, -1,
-                0, 0, mPointerGesture.downTime);
+        dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0, metaState,
+                       buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
+                       mPointerGesture.currentGestureProperties,
+                       mPointerGesture.currentGestureCoords,
+                       mPointerGesture.currentGestureIdToIndex,
+                       mPointerGesture.currentGestureIdBits, -1, 0, 0, mPointerGesture.downTime);
     } else if (dispatchedGestureIdBits.isEmpty()
             && !mPointerGesture.lastGestureIdBits.isEmpty()) {
         // Synthesize a hover move event after all pointers go up to indicate that
@@ -5467,9 +5440,8 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0,
                               metaState, buttonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE,
-                              /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords, 0, 0,
-                              x, y, mPointerGesture.downTime, /* videoFrames */ {});
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties, &pointerCoords,
+                              0, 0, x, y, mPointerGesture.downTime, /* videoFrames */ {});
         getListener()->notifyMotion(&args);
     }
 
@@ -5496,13 +5468,11 @@
     if (!mPointerGesture.lastGestureIdBits.isEmpty()) {
         int32_t metaState = getContext()->getGlobalMetaState();
         int32_t buttonState = mCurrentRawState.buttonState;
-        dispatchMotion(when, policyFlags, mSource,
-                AMOTION_EVENT_ACTION_CANCEL, 0, 0, metaState, buttonState,
-                AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0,
-                mPointerGesture.lastGestureProperties,
-                mPointerGesture.lastGestureCoords, mPointerGesture.lastGestureIdToIndex,
-                mPointerGesture.lastGestureIdBits, -1,
-                0, 0, mPointerGesture.downTime);
+        dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_CANCEL, 0, 0, metaState,
+                       buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
+                       mPointerGesture.lastGestureProperties, mPointerGesture.lastGestureCoords,
+                       mPointerGesture.lastGestureIdToIndex, mPointerGesture.lastGestureIdBits, -1,
+                       0, 0, mPointerGesture.downTime);
     }
 
     // Reset the current pointer gesture.
@@ -6395,10 +6365,10 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, AMOTION_EVENT_ACTION_UP, 0, 0, metaState,
                               mLastRawState.buttonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0, 1,
-                              &mPointerSimple.lastProperties, &mPointerSimple.lastCoords,
-                              mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
-                              yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &mPointerSimple.lastProperties,
+                              &mPointerSimple.lastCoords, mOrientedXPrecision, mOrientedYPrecision,
+                              xCursorPosition, yCursorPosition, mPointerSimple.downTime,
+                              /* videoFrames */ {});
         getListener()->notifyMotion(&args);
     }
 
@@ -6409,10 +6379,10 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, AMOTION_EVENT_ACTION_HOVER_EXIT, 0, 0,
                               metaState, mLastRawState.buttonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0, 1,
-                              &mPointerSimple.lastProperties, &mPointerSimple.lastCoords,
-                              mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
-                              yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &mPointerSimple.lastProperties,
+                              &mPointerSimple.lastCoords, mOrientedXPrecision, mOrientedYPrecision,
+                              xCursorPosition, yCursorPosition, mPointerSimple.downTime,
+                              /* videoFrames */ {});
         getListener()->notifyMotion(&args);
     }
 
@@ -6425,11 +6395,10 @@
             NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                                   displayId, policyFlags, AMOTION_EVENT_ACTION_DOWN, 0, 0,
                                   metaState, mCurrentRawState.buttonState,
-                                  MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE,
-                                  /* deviceTimestamp */ 0, 1, &mPointerSimple.currentProperties,
-                                  &mPointerSimple.currentCoords, mOrientedXPrecision,
-                                  mOrientedYPrecision, xCursorPosition, yCursorPosition,
-                                  mPointerSimple.downTime, /* videoFrames */ {});
+                                  MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE, 1,
+                                  &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
+                                  mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
+                                  yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
             getListener()->notifyMotion(&args);
         }
 
@@ -6437,10 +6406,10 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState,
                               mCurrentRawState.buttonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0, 1,
-                              &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
-                              mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
-                              yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &mPointerSimple.currentProperties,
+                              &mPointerSimple.currentCoords, mOrientedXPrecision,
+                              mOrientedYPrecision, xCursorPosition, yCursorPosition,
+                              mPointerSimple.downTime, /* videoFrames */ {});
         getListener()->notifyMotion(&args);
     }
 
@@ -6452,11 +6421,10 @@
             NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                                   displayId, policyFlags, AMOTION_EVENT_ACTION_HOVER_ENTER, 0, 0,
                                   metaState, mCurrentRawState.buttonState,
-                                  MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE,
-                                  /* deviceTimestamp */ 0, 1, &mPointerSimple.currentProperties,
-                                  &mPointerSimple.currentCoords, mOrientedXPrecision,
-                                  mOrientedYPrecision, xCursorPosition, yCursorPosition,
-                                  mPointerSimple.downTime, /* videoFrames */ {});
+                                  MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE, 1,
+                                  &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
+                                  mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
+                                  yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
             getListener()->notifyMotion(&args);
         }
 
@@ -6464,10 +6432,10 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0,
                               metaState, mCurrentRawState.buttonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0, 1,
-                              &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
-                              mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
-                              yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &mPointerSimple.currentProperties,
+                              &mPointerSimple.currentCoords, mOrientedXPrecision,
+                              mOrientedYPrecision, xCursorPosition, yCursorPosition,
+                              mPointerSimple.downTime, /* videoFrames */ {});
         getListener()->notifyMotion(&args);
     }
 
@@ -6486,10 +6454,10 @@
         NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(), mSource,
                               displayId, policyFlags, AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState,
                               mCurrentRawState.buttonState, MotionClassification::NONE,
-                              AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0, 1,
-                              &mPointerSimple.currentProperties, &pointerCoords,
-                              mOrientedXPrecision, mOrientedYPrecision, xCursorPosition,
-                              yCursorPosition, mPointerSimple.downTime, /* videoFrames */ {});
+                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &mPointerSimple.currentProperties,
+                              &pointerCoords, mOrientedXPrecision, mOrientedYPrecision,
+                              xCursorPosition, yCursorPosition, mPointerSimple.downTime,
+                              /* videoFrames */ {});
         getListener()->notifyMotion(&args);
     }
 
@@ -6510,11 +6478,12 @@
 }
 
 void TouchInputMapper::dispatchMotion(nsecs_t when, uint32_t policyFlags, uint32_t source,
-        int32_t action, int32_t actionButton, int32_t flags,
-        int32_t metaState, int32_t buttonState, int32_t edgeFlags, uint32_t deviceTimestamp,
-        const PointerProperties* properties, const PointerCoords* coords,
-        const uint32_t* idToIndex, BitSet32 idBits, int32_t changedId,
-        float xPrecision, float yPrecision, nsecs_t downTime) {
+                                      int32_t action, int32_t actionButton, int32_t flags,
+                                      int32_t metaState, int32_t buttonState, int32_t edgeFlags,
+                                      const PointerProperties* properties,
+                                      const PointerCoords* coords, const uint32_t* idToIndex,
+                                      BitSet32 idBits, int32_t changedId, float xPrecision,
+                                      float yPrecision, nsecs_t downTime) {
     PointerCoords pointerCoords[MAX_POINTERS];
     PointerProperties pointerProperties[MAX_POINTERS];
     uint32_t pointerCount = 0;
@@ -6558,9 +6527,9 @@
             [this](TouchVideoFrame& frame) { frame.rotate(this->mSurfaceOrientation); });
     NotifyMotionArgs args(mContext->getNextSequenceNum(), when, deviceId, source, displayId,
                           policyFlags, action, actionButton, flags, metaState, buttonState,
-                          MotionClassification::NONE, edgeFlags, deviceTimestamp, pointerCount,
-                          pointerProperties, pointerCoords, xPrecision, yPrecision, xCursorPosition,
-                          yCursorPosition, downTime, std::move(frames));
+                          MotionClassification::NONE, edgeFlags, pointerCount, pointerProperties,
+                          pointerCoords, xPrecision, yPrecision, xCursorPosition, yCursorPosition,
+                          downTime, std::move(frames));
     getListener()->notifyMotion(&args);
 }
 
@@ -7043,7 +7012,6 @@
         outCount += 1;
     }
 
-    outState->deviceTimestamp = mMultiTouchMotionAccumulator.getDeviceTimestamp();
     outState->rawPointerData.pointerCount = outCount;
     mPointerIdBits = newPointerIdBits;
 
@@ -7484,8 +7452,8 @@
     NotifyMotionArgs args(mContext->getNextSequenceNum(), when, getDeviceId(),
                           AINPUT_SOURCE_JOYSTICK, ADISPLAY_ID_NONE, policyFlags,
                           AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState, buttonState,
-                          MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE,
-                          /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords, 0, 0,
+                          MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE, 1,
+                          &pointerProperties, &pointerCoords, 0, 0,
                           AMOTION_EVENT_INVALID_CURSOR_POSITION,
                           AMOTION_EVENT_INVALID_CURSOR_POSITION, 0, /* videoFrames */ {});
     getListener()->notifyMotion(&args);
diff --git a/services/inputflinger/InputReader.h b/services/inputflinger/InputReader.h
index 9777779..0c08e7d 100644
--- a/services/inputflinger/InputReader.h
+++ b/services/inputflinger/InputReader.h
@@ -717,7 +717,6 @@
 
     inline size_t getSlotCount() const { return mSlotCount; }
     inline const Slot* getSlot(size_t index) const { return &mSlots[index]; }
-    inline uint32_t getDeviceTimestamp() const { return mDeviceTimestamp; }
 
 private:
     int32_t mCurrentSlot;
@@ -725,7 +724,6 @@
     size_t mSlotCount;
     bool mUsingSlotsProtocol;
     bool mHaveStylus;
-    uint32_t mDeviceTimestamp;
 
     void clearSlots(int32_t initialSlot);
 };
@@ -1174,7 +1172,6 @@
 
     struct RawState {
         nsecs_t when;
-        uint32_t deviceTimestamp;
 
         // Raw pointer sample data.
         RawPointerData rawPointerData;
@@ -1187,7 +1184,6 @@
 
         void copyFrom(const RawState& other) {
             when = other.when;
-            deviceTimestamp = other.deviceTimestamp;
             rawPointerData.copyFrom(other.rawPointerData);
             buttonState = other.buttonState;
             rawVScroll = other.rawVScroll;
@@ -1196,7 +1192,6 @@
 
         void clear() {
             when = 0;
-            deviceTimestamp = 0;
             rawPointerData.clear();
             buttonState = 0;
             rawVScroll = 0;
@@ -1205,7 +1200,6 @@
     };
 
     struct CookedState {
-        uint32_t deviceTimestamp;
         // Cooked pointer sample data.
         CookedPointerData cookedPointerData;
 
@@ -1217,7 +1211,6 @@
         int32_t buttonState;
 
         void copyFrom(const CookedState& other) {
-            deviceTimestamp = other.deviceTimestamp;
             cookedPointerData.copyFrom(other.cookedPointerData);
             fingerIdBits = other.fingerIdBits;
             stylusIdBits = other.stylusIdBits;
@@ -1226,7 +1219,6 @@
         }
 
         void clear() {
-            deviceTimestamp = 0;
             cookedPointerData.clear();
             fingerIdBits.clear();
             stylusIdBits.clear();
@@ -1634,7 +1626,6 @@
     void dispatchMotion(nsecs_t when, uint32_t policyFlags, uint32_t source,
             int32_t action, int32_t actionButton,
             int32_t flags, int32_t metaState, int32_t buttonState, int32_t edgeFlags,
-            uint32_t deviceTimestamp,
             const PointerProperties* properties, const PointerCoords* coords,
             const uint32_t* idToIndex, BitSet32 idBits,
             int32_t changedId, float xPrecision, float yPrecision, nsecs_t downTime);
diff --git a/services/inputflinger/include/InputListener.h b/services/inputflinger/include/InputListener.h
index 57c894b..0dcd2f9 100644
--- a/services/inputflinger/include/InputListener.h
+++ b/services/inputflinger/include/InputListener.h
@@ -107,13 +107,7 @@
      */
     MotionClassification classification;
     int32_t edgeFlags;
-    /**
-     * A timestamp in the input device's time base, not the platform's.
-     * The units are microseconds since the last reset.
-     * This can only be compared to other device timestamps from the same device.
-     * This value will overflow after a little over an hour.
-     */
-    uint32_t deviceTimestamp;
+
     uint32_t pointerCount;
     PointerProperties pointerProperties[MAX_POINTERS];
     PointerCoords pointerCoords[MAX_POINTERS];
@@ -134,8 +128,7 @@
     NotifyMotionArgs(uint32_t sequenceNum, nsecs_t eventTime, int32_t deviceId, uint32_t source,
                      int32_t displayId, uint32_t policyFlags, int32_t action, int32_t actionButton,
                      int32_t flags, int32_t metaState, int32_t buttonState,
-                     MotionClassification classification, int32_t edgeFlags,
-                     uint32_t deviceTimestamp, uint32_t pointerCount,
+                     MotionClassification classification, int32_t edgeFlags, uint32_t pointerCount,
                      const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
                      float xPrecision, float yPrecision, float xCursorPosition,
                      float yCursorPosition, nsecs_t downTime,
diff --git a/services/inputflinger/tests/InputClassifierConverter_test.cpp b/services/inputflinger/tests/InputClassifierConverter_test.cpp
index ba1c7c9..f58b628 100644
--- a/services/inputflinger/tests/InputClassifierConverter_test.cpp
+++ b/services/inputflinger/tests/InputClassifierConverter_test.cpp
@@ -42,9 +42,9 @@
                                 AINPUT_SOURCE_ANY, ADISPLAY_ID_DEFAULT, 4 /*policyFlags*/,
                                 AMOTION_EVENT_ACTION_DOWN, 0 /*actionButton*/, 0 /*flags*/,
                                 AMETA_NONE, 0 /*buttonState*/, MotionClassification::NONE,
-                                AMOTION_EVENT_EDGE_FLAG_NONE, 5 /*deviceTimestamp*/,
-                                1 /*pointerCount*/, &properties, &coords, 0 /*xPrecision*/,
-                                0 /*yPrecision*/, AMOTION_EVENT_INVALID_CURSOR_POSITION,
+                                AMOTION_EVENT_EDGE_FLAG_NONE, 1 /*pointerCount*/, &properties,
+                                &coords, 0 /*xPrecision*/, 0 /*yPrecision*/,
+                                AMOTION_EVENT_INVALID_CURSOR_POSITION,
                                 AMOTION_EVENT_INVALID_CURSOR_POSITION, downTime,
                                 {} /*videoFrames*/);
     return motionArgs;
diff --git a/services/inputflinger/tests/InputClassifier_test.cpp b/services/inputflinger/tests/InputClassifier_test.cpp
index 9bc4282..40086ef 100644
--- a/services/inputflinger/tests/InputClassifier_test.cpp
+++ b/services/inputflinger/tests/InputClassifier_test.cpp
@@ -42,9 +42,9 @@
                                 AINPUT_SOURCE_ANY, ADISPLAY_ID_DEFAULT, 4 /*policyFlags*/,
                                 AMOTION_EVENT_ACTION_DOWN, 0 /*actionButton*/, 0 /*flags*/,
                                 AMETA_NONE, 0 /*buttonState*/, MotionClassification::NONE,
-                                AMOTION_EVENT_EDGE_FLAG_NONE, 5 /*deviceTimestamp*/,
-                                1 /*pointerCount*/, &properties, &coords, 0 /*xPrecision*/,
-                                0 /*yPrecision*/, AMOTION_EVENT_INVALID_CURSOR_POSITION,
+                                AMOTION_EVENT_EDGE_FLAG_NONE, 1 /*pointerCount*/, &properties,
+                                &coords, 0 /*xPrecision*/, 0 /*yPrecision*/,
+                                AMOTION_EVENT_INVALID_CURSOR_POSITION,
                                 AMOTION_EVENT_INVALID_CURSOR_POSITION, downTime,
                                 {} /*videoFrames*/);
     return motionArgs;
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index c28a621..a86dcbc 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -608,8 +608,8 @@
     NotifyMotionArgs args(/* sequenceNum */ 0, currentTime, DEVICE_ID, source, displayId,
                           POLICY_FLAG_PASS_TO_USER, action, /* actionButton */ 0, /* flags */ 0,
                           AMETA_NONE, /* buttonState */ 0, MotionClassification::NONE,
-                          AMOTION_EVENT_EDGE_FLAG_NONE, /* deviceTimestamp */ 0, 1,
-                          pointerProperties, pointerCoords, /* xPrecision */ 0, /* yPrecision */ 0,
+                          AMOTION_EVENT_EDGE_FLAG_NONE, 1, pointerProperties, pointerCoords,
+                          /* xPrecision */ 0, /* yPrecision */ 0,
                           AMOTION_EVENT_INVALID_CURSOR_POSITION,
                           AMOTION_EVENT_INVALID_CURSOR_POSITION, currentTime, /* videoFrames */ {});
 
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index d353028..e108834 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -4688,7 +4688,6 @@
     void processSlot(MultiTouchInputMapper* mapper, int32_t slot);
     void processToolType(MultiTouchInputMapper* mapper, int32_t toolType);
     void processKey(MultiTouchInputMapper* mapper, int32_t code, int32_t value);
-    void processTimestamp(MultiTouchInputMapper* mapper, uint32_t value);
     void processMTSync(MultiTouchInputMapper* mapper);
     void processSync(MultiTouchInputMapper* mapper);
 };
@@ -4804,10 +4803,6 @@
     process(mapper, ARBITRARY_TIME, EV_KEY, code, value);
 }
 
-void MultiTouchInputMapperTest::processTimestamp(MultiTouchInputMapper* mapper, uint32_t value) {
-    process(mapper, ARBITRARY_TIME, EV_MSC, MSC_TIMESTAMP, value);
-}
-
 void MultiTouchInputMapperTest::processMTSync(MultiTouchInputMapper* mapper) {
     process(mapper, ARBITRARY_TIME, EV_SYN, SYN_MT_REPORT, 0);
 }
@@ -6190,64 +6185,6 @@
             toDisplayX(150), toDisplayY(250), 0, 0, 0, 0, 0, 0, 0, 0));
 }
 
-TEST_F(MultiTouchInputMapperTest, Process_HandlesTimestamp) {
-    MultiTouchInputMapper* mapper = new MultiTouchInputMapper(mDevice);
-
-    addConfigurationProperty("touch.deviceType", "touchScreen");
-    prepareDisplay(DISPLAY_ORIENTATION_0);
-    prepareAxes(POSITION);
-    addMapperAndConfigure(mapper);
-    NotifyMotionArgs args;
-
-    // By default, deviceTimestamp should be zero
-    processPosition(mapper, 100, 100);
-    processMTSync(mapper);
-    processSync(mapper);
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
-    ASSERT_EQ(0U, args.deviceTimestamp);
-
-    // Now the timestamp of 1000 is reported by evdev and should appear in MotionArgs
-    processPosition(mapper, 0, 0);
-    processTimestamp(mapper, 1000);
-    processMTSync(mapper);
-    processSync(mapper);
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
-    ASSERT_EQ(1000U, args.deviceTimestamp);
-}
-
-TEST_F(MultiTouchInputMapperTest, WhenMapperIsReset_TimestampIsCleared) {
-    MultiTouchInputMapper* mapper = new MultiTouchInputMapper(mDevice);
-
-    addConfigurationProperty("touch.deviceType", "touchScreen");
-    prepareDisplay(DISPLAY_ORIENTATION_0);
-    prepareAxes(POSITION);
-    addMapperAndConfigure(mapper);
-    NotifyMotionArgs args;
-
-    // Send a touch event with a timestamp
-    processPosition(mapper, 100, 100);
-    processTimestamp(mapper, 1);
-    processMTSync(mapper);
-    processSync(mapper);
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
-    ASSERT_EQ(1U, args.deviceTimestamp);
-
-    // Since the data accumulates, and new timestamp has not arrived, deviceTimestamp won't change
-    processPosition(mapper, 100, 200);
-    processMTSync(mapper);
-    processSync(mapper);
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
-    ASSERT_EQ(1U, args.deviceTimestamp);
-
-    mapper->reset(/* when */ 0);
-    // After the mapper is reset, deviceTimestamp should become zero again
-    processPosition(mapper, 100, 300);
-    processMTSync(mapper);
-    processSync(mapper);
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
-    ASSERT_EQ(0U, args.deviceTimestamp);
-}
-
 /**
  * Set the input device port <--> display port associations, and check that the
  * events are routed to the display that matches the display port.
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index 2abc1a7..4b01301 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -85,7 +85,7 @@
 }
 
 void BufferStateLayer::releasePendingBuffer(nsecs_t /*dequeueReadyTime*/) {
-    mFlinger->getTransactionCompletedThread().addPresentedCallbackHandles(
+    mFlinger->getTransactionCompletedThread().finalizePendingCallbackHandles(
             mDrawingState.callbackHandles);
 
     mDrawingState.callbackHandles = {};
@@ -310,7 +310,7 @@
 
         } else { // If this layer will NOT need to be relatched and presented this frame
             // Notify the transaction completed thread this handle is done
-            mFlinger->getTransactionCompletedThread().addUnpresentedCallbackHandle(handle);
+            mFlinger->getTransactionCompletedThread().registerUnpresentedCallbackHandle(handle);
         }
     }
 
diff --git a/services/surfaceflinger/Scheduler/DispSyncSource.cpp b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
index 026b557..5faf46e 100644
--- a/services/surfaceflinger/Scheduler/DispSyncSource.cpp
+++ b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
@@ -78,6 +78,10 @@
     // Normalize phaseOffset to [-period, period)
     const int numPeriods = phaseOffset / period;
     phaseOffset -= numPeriods * period;
+    if (mPhaseOffset == phaseOffset) {
+        return;
+    }
+
     mPhaseOffset = phaseOffset;
     tracePhaseOffset();
 
diff --git a/services/surfaceflinger/Scheduler/LayerInfo.cpp b/services/surfaceflinger/Scheduler/LayerInfo.cpp
index beddb9b..e782dd5 100644
--- a/services/surfaceflinger/Scheduler/LayerInfo.cpp
+++ b/services/surfaceflinger/Scheduler/LayerInfo.cpp
@@ -50,7 +50,8 @@
     // Ignore time diff that are too high - those are stale values
     if (timeDiff > OBSOLETE_TIME_EPSILON_NS.count()) return;
     const nsecs_t refreshDuration = (timeDiff > 0) ? timeDiff : mMinRefreshDuration;
-    mRefreshRateHistory.insertRefreshRate(refreshDuration);
+    const int fps = 1e9f / refreshDuration;
+    mRefreshRateHistory.insertRefreshRate(fps);
 }
 
 } // namespace scheduler
diff --git a/services/surfaceflinger/Scheduler/LayerInfo.h b/services/surfaceflinger/Scheduler/LayerInfo.h
index 2c50053..66df9dc 100644
--- a/services/surfaceflinger/Scheduler/LayerInfo.h
+++ b/services/surfaceflinger/Scheduler/LayerInfo.h
@@ -46,7 +46,7 @@
     public:
         explicit RefreshRateHistory(nsecs_t minRefreshDuration)
               : mMinRefreshDuration(minRefreshDuration) {}
-        void insertRefreshRate(nsecs_t refreshRate) {
+        void insertRefreshRate(int refreshRate) {
             mElements.push_back(refreshRate);
             if (mElements.size() > HISTORY_SIZE) {
                 mElements.pop_front();
@@ -54,13 +54,13 @@
         }
 
         float getRefreshRateAvg() const {
-            nsecs_t refreshDuration = mMinRefreshDuration;
-            if (mElements.size() > 0) {
-                refreshDuration = scheduler::calculate_mean(mElements);
+            if (mElements.empty()) {
+                return 1e9f / mMinRefreshDuration;
             }
 
-            return 1e9f / refreshDuration;
+            return scheduler::calculate_mean(mElements);
         }
+
         void clearHistory() { mElements.clear(); }
 
     private:
diff --git a/services/surfaceflinger/Scheduler/VSyncModulator.cpp b/services/surfaceflinger/Scheduler/VSyncModulator.cpp
index d452c19..7a3bf8e 100644
--- a/services/surfaceflinger/Scheduler/VSyncModulator.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.cpp
@@ -129,29 +129,16 @@
 
 void VSyncModulator::updateOffsetsLocked() {
     const Offsets desired = getNextOffsets();
-    const Offsets current = mOffsets;
 
-    bool changed = false;
-    if (desired.sf != current.sf) {
-        if (mSfConnectionHandle != nullptr) {
-            mScheduler->setPhaseOffset(mSfConnectionHandle, desired.sf);
-        } else if (mSfEventThread != nullptr) {
-            mSfEventThread->setPhaseOffset(desired.sf);
-        }
-        changed = true;
-    }
-    if (desired.app != current.app) {
-        if (mAppConnectionHandle != nullptr) {
-            mScheduler->setPhaseOffset(mAppConnectionHandle, desired.app);
-        } else if (mAppEventThread != nullptr) {
-            mAppEventThread->setPhaseOffset(desired.app);
-        }
-        changed = true;
+    if (mSfConnectionHandle != nullptr) {
+        mScheduler->setPhaseOffset(mSfConnectionHandle, desired.sf);
     }
 
-    if (changed) {
-        flushOffsets();
+    if (mAppConnectionHandle != nullptr) {
+        mScheduler->setPhaseOffset(mAppConnectionHandle, desired.app);
     }
+
+    flushOffsets();
 }
 
 void VSyncModulator::flushOffsets() {
diff --git a/services/surfaceflinger/Scheduler/VSyncModulator.h b/services/surfaceflinger/Scheduler/VSyncModulator.h
index 10cf8e6..ddbd221 100644
--- a/services/surfaceflinger/Scheduler/VSyncModulator.h
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.h
@@ -68,12 +68,6 @@
     void setPhaseOffsets(Offsets early, Offsets earlyGl, Offsets late,
                          nsecs_t thresholdForNextVsync) EXCLUDES(mMutex);
 
-    // Sets handles to the SF and app event threads.
-    void setEventThreads(EventThread* sfEventThread, EventThread* appEventThread) {
-        mSfEventThread = sfEventThread;
-        mAppEventThread = appEventThread;
-    }
-
     // Sets the scheduler and vsync connection handlers.
     void setSchedulerAndHandles(Scheduler* scheduler,
                                 Scheduler::ConnectionHandle* appConnectionHandle,
@@ -121,9 +115,6 @@
     std::unordered_map<OffsetType, Offsets> mOffsetMap GUARDED_BY(mMutex);
     nsecs_t mThresholdForNextVsync;
 
-    EventThread* mSfEventThread = nullptr;
-    EventThread* mAppEventThread = nullptr;
-
     Scheduler* mScheduler = nullptr;
     Scheduler::ConnectionHandle* mAppConnectionHandle = nullptr;
     Scheduler::ConnectionHandle* mSfConnectionHandle = nullptr;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 6ebfc0d..f1e3971 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1477,7 +1477,7 @@
     *compositorTiming = getBE().mCompositorTiming;
 }
 
-bool SurfaceFlinger::isDisplayConfigAllowed(int32_t configId) {
+bool SurfaceFlinger::isDisplayConfigAllowed(int32_t configId) const {
     return mAllowedDisplayConfigs.empty() || mAllowedDisplayConfigs.count(configId);
 }
 
@@ -2183,14 +2183,7 @@
     }
 
     mTransactionCompletedThread.addPresentFence(mPreviousPresentFences[0]);
-
-    // Lock the mStateLock in case SurfaceFlinger is in the middle of applying a transaction.
-    // If we do not lock here, a callback could be sent without all of its SurfaceControls and
-    // metrics.
-    {
-        Mutex::Autolock _l(mStateLock);
-        mTransactionCompletedThread.sendCallbacks();
-    }
+    mTransactionCompletedThread.sendCallbacks();
 
     if (mLumaSampling && mRegionSamplingThread) {
         mRegionSamplingThread->notifyNewContent();
@@ -3790,8 +3783,8 @@
     if (!listenerCallbacks.empty()) {
         mTransactionCompletedThread.run();
     }
-    for (const auto& [listener, callbackIds] : listenerCallbacks) {
-        mTransactionCompletedThread.addCallback(listener, callbackIds);
+    for (const auto& listenerCallback : listenerCallbacks) {
+        mTransactionCompletedThread.startRegistration(listenerCallback);
     }
 
     uint32_t clientStateFlags = 0;
@@ -3800,6 +3793,10 @@
                                                  postTime, privileged);
     }
 
+    for (const auto& listenerCallback : listenerCallbacks) {
+        mTransactionCompletedThread.endRegistration(listenerCallback);
+    }
+
     // If the state doesn't require a traversal and there are callbacks, send them now
     if (!(clientStateFlags & eTraversalNeeded) && !listenerCallbacks.empty()) {
         mTransactionCompletedThread.sendCallbacks();
@@ -3937,7 +3934,7 @@
     sp<Layer> layer(client->getLayerUser(s.surface));
     if (layer == nullptr) {
         for (auto& listenerCallback : listenerCallbacks) {
-            mTransactionCompletedThread.addUnpresentedCallbackHandle(
+            mTransactionCompletedThread.registerUnpresentedCallbackHandle(
                     new CallbackHandle(listenerCallback.transactionCompletedListener,
                                        listenerCallback.callbackIds, s.surface));
         }
@@ -4710,11 +4707,9 @@
     StringAppendF(&result, "+  Smart 90 for video detection: %s\n\n",
                   mUseSmart90ForVideo ? "on" : "off");
     StringAppendF(&result, "Allowed Display Configs: ");
-    for (int32_t configId : mAllowedDisplayConfigs) {
-        for (auto refresh : mRefreshRateConfigs.getRefreshRates()) {
-            if (refresh.second && refresh.second->configId == configId) {
-                StringAppendF(&result, "%dHz, ", refresh.second->fps);
-            }
+    for (auto refresh : mRefreshRateConfigs.getRefreshRates()) {
+        if (refresh.second && isDisplayConfigAllowed(refresh.second->configId)) {
+            StringAppendF(&result, "%dHz, ", refresh.second->fps);
         }
     }
     StringAppendF(&result, "(config override by backdoor: %s)\n\n",
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index f7b7410..fa801af 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -813,7 +813,7 @@
     // the desired refresh rate.
     void setRefreshRateTo(RefreshRateType, Scheduler::ConfigEvent event) REQUIRES(mStateLock);
 
-    bool isDisplayConfigAllowed(int32_t configId) REQUIRES(mStateLock);
+    bool isDisplayConfigAllowed(int32_t configId) const REQUIRES(mStateLock);
 
     /*
      * Display identification
diff --git a/services/surfaceflinger/TransactionCompletedThread.cpp b/services/surfaceflinger/TransactionCompletedThread.cpp
index 5cf8eb1..c519f8d 100644
--- a/services/surfaceflinger/TransactionCompletedThread.cpp
+++ b/services/surfaceflinger/TransactionCompletedThread.cpp
@@ -75,14 +75,15 @@
     mThread = std::thread(&TransactionCompletedThread::threadMain, this);
 }
 
-status_t TransactionCompletedThread::addCallback(const sp<ITransactionCompletedListener>& listener,
-                                                 const std::vector<CallbackId>& callbackIds) {
+status_t TransactionCompletedThread::startRegistration(const ListenerCallbacks& listenerCallbacks) {
     std::lock_guard lock(mMutex);
     if (!mRunning) {
         ALOGE("cannot add callback because the callback thread isn't running");
         return BAD_VALUE;
     }
 
+    auto& [listener, callbackIds] = listenerCallbacks;
+
     if (mCompletedTransactions.count(listener) == 0) {
         status_t err = IInterface::asBinder(listener)->linkToDeath(mDeathRecipient);
         if (err != NO_ERROR) {
@@ -91,11 +92,41 @@
         }
     }
 
+    mRegisteringTransactions.insert(listenerCallbacks);
+
     auto& transactionStatsDeque = mCompletedTransactions[listener];
     transactionStatsDeque.emplace_back(callbackIds);
+
     return NO_ERROR;
 }
 
+status_t TransactionCompletedThread::endRegistration(const ListenerCallbacks& listenerCallbacks) {
+    std::lock_guard lock(mMutex);
+    if (!mRunning) {
+        ALOGE("cannot add callback because the callback thread isn't running");
+        return BAD_VALUE;
+    }
+
+    auto itr = mRegisteringTransactions.find(listenerCallbacks);
+    if (itr == mRegisteringTransactions.end()) {
+        ALOGE("cannot end a registration that does not exist");
+        return BAD_VALUE;
+    }
+
+    mRegisteringTransactions.erase(itr);
+
+    return NO_ERROR;
+}
+
+bool TransactionCompletedThread::isRegisteringTransaction(
+        const sp<ITransactionCompletedListener>& transactionListener,
+        const std::vector<CallbackId>& callbackIds) {
+    ListenerCallbacks listenerCallbacks(transactionListener, callbackIds);
+
+    auto itr = mRegisteringTransactions.find(listenerCallbacks);
+    return itr != mRegisteringTransactions.end();
+}
+
 status_t TransactionCompletedThread::registerPendingCallbackHandle(
         const sp<CallbackHandle>& handle) {
     std::lock_guard lock(mMutex);
@@ -105,7 +136,7 @@
     }
 
     // If we can't find the transaction stats something has gone wrong. The client should call
-    // addCallback before trying to register a pending callback handle.
+    // startRegistration before trying to register a pending callback handle.
     TransactionStats* transactionStats;
     status_t err = findTransactionStats(handle->listener, handle->callbackIds, &transactionStats);
     if (err != NO_ERROR) {
@@ -117,7 +148,7 @@
     return NO_ERROR;
 }
 
-status_t TransactionCompletedThread::addPresentedCallbackHandles(
+status_t TransactionCompletedThread::finalizePendingCallbackHandles(
         const std::deque<sp<CallbackHandle>>& handles) {
     std::lock_guard lock(mMutex);
     if (!mRunning) {
@@ -158,7 +189,7 @@
     return NO_ERROR;
 }
 
-status_t TransactionCompletedThread::addUnpresentedCallbackHandle(
+status_t TransactionCompletedThread::registerUnpresentedCallbackHandle(
         const sp<CallbackHandle>& handle) {
     std::lock_guard lock(mMutex);
     if (!mRunning) {
@@ -189,7 +220,7 @@
 
 status_t TransactionCompletedThread::addCallbackHandle(const sp<CallbackHandle>& handle) {
     // If we can't find the transaction stats something has gone wrong. The client should call
-    // addCallback before trying to add a presnted callback handle.
+    // startRegistration before trying to add a callback handle.
     TransactionStats* transactionStats;
     status_t err = findTransactionStats(handle->listener, handle->callbackIds, &transactionStats);
     if (err != NO_ERROR) {
@@ -197,8 +228,14 @@
     }
 
     transactionStats->latchTime = handle->latchTime;
-    transactionStats->surfaceStats.emplace_back(handle->surfaceControl, handle->acquireTime,
-                                                handle->previousReleaseFence);
+    // If the layer has already been destroyed, don't add the SurfaceControl to the callback.
+    // The client side keeps a sp<> to the SurfaceControl so if the SurfaceControl has been
+    // destroyed the client side is dead and there won't be anyone to send the callback to.
+    sp<IBinder> surfaceControl = handle->surfaceControl.promote();
+    if (surfaceControl) {
+        transactionStats->surfaceStats.emplace_back(surfaceControl, handle->acquireTime,
+                                                    handle->previousReleaseFence);
+    }
     return NO_ERROR;
 }
 
@@ -233,6 +270,13 @@
             while (transactionStatsItr != transactionStatsDeque.end()) {
                 auto& transactionStats = *transactionStatsItr;
 
+                // If this transaction is still registering, it is not safe to send a callback
+                // because there could be surface controls that haven't been added to
+                // transaction stats or mPendingTransactions.
+                if (isRegisteringTransaction(listener, transactionStats.callbackIds)) {
+                    break;
+                }
+
                 // If we are still waiting on the callback handles for this transaction, stop
                 // here because all transaction callbacks for the same listener must come in order
                 auto pendingTransactions = mPendingTransactions.find(listener);
diff --git a/services/surfaceflinger/TransactionCompletedThread.h b/services/surfaceflinger/TransactionCompletedThread.h
index 21e2678..e255e50 100644
--- a/services/surfaceflinger/TransactionCompletedThread.h
+++ b/services/surfaceflinger/TransactionCompletedThread.h
@@ -21,6 +21,7 @@
 #include <mutex>
 #include <thread>
 #include <unordered_map>
+#include <unordered_set>
 
 #include <android-base/thread_annotations.h>
 
@@ -30,6 +31,12 @@
 
 namespace android {
 
+struct ITransactionCompletedListenerHash {
+    std::size_t operator()(const sp<ITransactionCompletedListener>& listener) const {
+        return std::hash<IBinder*>{}((listener) ? IInterface::asBinder(listener).get() : nullptr);
+    }
+};
+
 struct CallbackIdsHash {
     // CallbackId vectors have several properties that let us get away with this simple hash.
     // 1) CallbackIds are never 0 so if something has gone wrong and our CallbackId vector is
@@ -42,6 +49,22 @@
     }
 };
 
+struct ListenerCallbacksHash {
+    std::size_t HashCombine(size_t value1, size_t value2) const {
+        return value1 ^ (value2 + 0x9e3779b9 + (value1 << 6) + (value1 >> 2));
+    }
+
+    std::size_t operator()(const ListenerCallbacks& listenerCallbacks) const {
+        struct ITransactionCompletedListenerHash listenerHasher;
+        struct CallbackIdsHash callbackIdsHasher;
+
+        std::size_t listenerHash = listenerHasher(listenerCallbacks.transactionCompletedListener);
+        std::size_t callbackIdsHash = callbackIdsHasher(listenerCallbacks.callbackIds);
+
+        return HashCombine(listenerHash, callbackIdsHash);
+    }
+};
+
 class CallbackHandle : public RefBase {
 public:
     CallbackHandle(const sp<ITransactionCompletedListener>& transactionListener,
@@ -49,7 +72,7 @@
 
     sp<ITransactionCompletedListener> listener;
     std::vector<CallbackId> callbackIds;
-    sp<IBinder> surfaceControl;
+    wp<IBinder> surfaceControl;
 
     bool releasePreviousBuffer = false;
     sp<Fence> previousReleaseFence;
@@ -64,10 +87,12 @@
     void run();
 
     // Adds listener and callbackIds in case there are no SurfaceControls that are supposed
-    // to be included in the callback. This functions should be call before attempting to add any
-    // callback handles.
-    status_t addCallback(const sp<ITransactionCompletedListener>& transactionListener,
-                         const std::vector<CallbackId>& callbackIds);
+    // to be included in the callback. This functions should be call before attempting to register
+    // any callback handles.
+    status_t startRegistration(const ListenerCallbacks& listenerCallbacks);
+    // Ends the registration. After this is called, no more CallbackHandles will be registered.
+    // It is safe to send a callback if the Transaction doesn't have any Pending callback handles.
+    status_t endRegistration(const ListenerCallbacks& listenerCallbacks);
 
     // Informs the TransactionCompletedThread that there is a Transaction with a CallbackHandle
     // that needs to be latched and presented this frame. This function should be called once the
@@ -76,11 +101,11 @@
     // presented.
     status_t registerPendingCallbackHandle(const sp<CallbackHandle>& handle);
     // Notifies the TransactionCompletedThread that a pending CallbackHandle has been presented.
-    status_t addPresentedCallbackHandles(const std::deque<sp<CallbackHandle>>& handles);
+    status_t finalizePendingCallbackHandles(const std::deque<sp<CallbackHandle>>& handles);
 
     // Adds the Transaction CallbackHandle from a layer that does not need to be relatched and
     // presented this frame.
-    status_t addUnpresentedCallbackHandle(const sp<CallbackHandle>& handle);
+    status_t registerUnpresentedCallbackHandle(const sp<CallbackHandle>& handle);
 
     void addPresentFence(const sp<Fence>& presentFence);
 
@@ -89,6 +114,9 @@
 private:
     void threadMain();
 
+    bool isRegisteringTransaction(const sp<ITransactionCompletedListener>& transactionListener,
+                                  const std::vector<CallbackId>& callbackIds) REQUIRES(mMutex);
+
     status_t findTransactionStats(const sp<ITransactionCompletedListener>& listener,
                                   const std::vector<CallbackId>& callbackIds,
                                   TransactionStats** outTransactionStats) REQUIRES(mMutex);
@@ -106,13 +134,6 @@
     };
     sp<ThreadDeathRecipient> mDeathRecipient;
 
-    struct ITransactionCompletedListenerHash {
-        std::size_t operator()(const sp<ITransactionCompletedListener>& listener) const {
-            return std::hash<IBinder*>{}((listener) ? IInterface::asBinder(listener).get()
-                                                    : nullptr);
-        }
-    };
-
     // Protects the creation and destruction of mThread
     std::mutex mThreadMutex;
 
@@ -121,11 +142,15 @@
     std::mutex mMutex;
     std::condition_variable_any mConditionVariable;
 
+    std::unordered_set<ListenerCallbacks, ListenerCallbacksHash> mRegisteringTransactions
+            GUARDED_BY(mMutex);
+
     std::unordered_map<
             sp<ITransactionCompletedListener>,
             std::unordered_map<std::vector<CallbackId>, uint32_t /*count*/, CallbackIdsHash>,
             ITransactionCompletedListenerHash>
             mPendingTransactions GUARDED_BY(mMutex);
+
     std::unordered_map<sp<ITransactionCompletedListener>, std::deque<TransactionStats>,
                        ITransactionCompletedListenerHash>
             mCompletedTransactions GUARDED_BY(mMutex);
diff --git a/vulkan/scripts/code_generator.py b/vulkan/scripts/code_generator.py
old mode 100644
new mode 100755