Use ftl::Flags for InputReaderConfiguration::Change

Convert the config flags into an enum class and use ftl::Flags when
dealing with configuration changes.

Bug: 245989146
Test: Presubmit
Change-Id: I0aed947ce433a1def11a60e73a14575561374700
diff --git a/services/inputflinger/InputReaderBase.cpp b/services/inputflinger/InputReaderBase.cpp
index 2450235..4ec5b89 100644
--- a/services/inputflinger/InputReaderBase.cpp
+++ b/services/inputflinger/InputReaderBase.cpp
@@ -38,50 +38,6 @@
 
 // --- InputReaderConfiguration ---
 
-std::string InputReaderConfiguration::changesToString(uint32_t changes) {
-    if (changes == 0) {
-        return "<none>";
-    }
-    std::string result;
-    if (changes & CHANGE_POINTER_SPEED) {
-        result += "POINTER_SPEED | ";
-    }
-    if (changes & CHANGE_POINTER_GESTURE_ENABLEMENT) {
-        result += "POINTER_GESTURE_ENABLEMENT | ";
-    }
-    if (changes & CHANGE_DISPLAY_INFO) {
-        result += "DISPLAY_INFO | ";
-    }
-    if (changes & CHANGE_SHOW_TOUCHES) {
-        result += "SHOW_TOUCHES | ";
-    }
-    if (changes & CHANGE_KEYBOARD_LAYOUTS) {
-        result += "KEYBOARD_LAYOUTS | ";
-    }
-    if (changes & CHANGE_DEVICE_ALIAS) {
-        result += "DEVICE_ALIAS | ";
-    }
-    if (changes & CHANGE_TOUCH_AFFINE_TRANSFORMATION) {
-        result += "TOUCH_AFFINE_TRANSFORMATION | ";
-    }
-    if (changes & CHANGE_EXTERNAL_STYLUS_PRESENCE) {
-        result += "EXTERNAL_STYLUS_PRESENCE | ";
-    }
-    if (changes & CHANGE_POINTER_CAPTURE) {
-        result += "POINTER_CAPTURE | ";
-    }
-    if (changes & CHANGE_ENABLED_STATE) {
-        result += "ENABLED_STATE | ";
-    }
-    if (changes & CHANGE_TOUCHPAD_SETTINGS) {
-        result += "TOUCHPAD_SETTINGS | ";
-    }
-    if (changes & CHANGE_MUST_REOPEN) {
-        result += "MUST_REOPEN | ";
-    }
-    return result;
-}
-
 std::optional<DisplayViewport> InputReaderConfiguration::getDisplayViewportByUniqueId(
         const std::string& uniqueDisplayId) const {
     if (uniqueDisplayId.empty()) {
diff --git a/services/inputflinger/include/InputReaderBase.h b/services/inputflinger/include/InputReaderBase.h
index 1750c64..a93a2ea 100644
--- a/services/inputflinger/include/InputReaderBase.h
+++ b/services/inputflinger/include/InputReaderBase.h
@@ -42,118 +42,6 @@
 
 namespace android {
 
-// --- InputReaderInterface ---
-
-/* The interface for the InputReader shared library.
- *
- * Manages one or more threads that process raw input events and sends cooked event data to an
- * input listener.
- *
- * The implementation must guarantee thread safety for this interface. However, since the input
- * listener is NOT thread safe, all calls to the listener must happen from the same thread.
- */
-class InputReaderInterface {
-public:
-    InputReaderInterface() { }
-    virtual ~InputReaderInterface() { }
-
-    /* Dumps the state of the input reader.
-     *
-     * This method may be called on any thread (usually by the input manager). */
-    virtual void dump(std::string& dump) = 0;
-
-    /* Called by the heartbeat to ensures that the reader has not deadlocked. */
-    virtual void monitor() = 0;
-
-    /* Returns true if the input device is enabled. */
-    virtual bool isInputDeviceEnabled(int32_t deviceId) = 0;
-
-    /* Makes the reader start processing events from the kernel. */
-    virtual status_t start() = 0;
-
-    /* Makes the reader stop processing any more events. */
-    virtual status_t stop() = 0;
-
-    /* Gets information about all input devices.
-     *
-     * This method may be called on any thread (usually by the input manager).
-     */
-    virtual std::vector<InputDeviceInfo> getInputDevices() const = 0;
-
-    /* Query current input state. */
-    virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask,
-            int32_t scanCode) = 0;
-    virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask,
-            int32_t keyCode) = 0;
-    virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask,
-            int32_t sw) = 0;
-
-    virtual void addKeyRemapping(int32_t deviceId, int32_t fromKeyCode,
-                                 int32_t toKeyCode) const = 0;
-
-    virtual int32_t getKeyCodeForKeyLocation(int32_t deviceId, int32_t locationKeyCode) const = 0;
-
-    /* Toggle Caps Lock */
-    virtual void toggleCapsLockState(int32_t deviceId) = 0;
-
-    /* Determine whether physical keys exist for the given framework-domain key codes. */
-    virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask,
-                         const std::vector<int32_t>& keyCodes, uint8_t* outFlags) = 0;
-
-    /* Requests that a reconfiguration of all input devices.
-     * The changes flag is a bitfield that indicates what has changed and whether
-     * the input devices must all be reopened. */
-    virtual void requestRefreshConfiguration(uint32_t changes) = 0;
-
-    /* Controls the vibrator of a particular input device. */
-    virtual void vibrate(int32_t deviceId, const VibrationSequence& sequence, ssize_t repeat,
-                         int32_t token) = 0;
-    virtual void cancelVibrate(int32_t deviceId, int32_t token) = 0;
-
-    virtual bool isVibrating(int32_t deviceId) = 0;
-
-    virtual std::vector<int32_t> getVibratorIds(int32_t deviceId) = 0;
-    /* Get battery level of a particular input device. */
-    virtual std::optional<int32_t> getBatteryCapacity(int32_t deviceId) = 0;
-    /* Get battery status of a particular input device. */
-    virtual std::optional<int32_t> getBatteryStatus(int32_t deviceId) = 0;
-    /* Get the device path for the battery of an input device. */
-    virtual std::optional<std::string> getBatteryDevicePath(int32_t deviceId) = 0;
-
-    virtual std::vector<InputDeviceLightInfo> getLights(int32_t deviceId) = 0;
-
-    virtual std::vector<InputDeviceSensorInfo> getSensors(int32_t deviceId) = 0;
-
-    /* Return true if the device can send input events to the specified display. */
-    virtual bool canDispatchToDisplay(int32_t deviceId, int32_t displayId) = 0;
-
-    /* Enable sensor in input reader mapper. */
-    virtual bool enableSensor(int32_t deviceId, InputDeviceSensorType sensorType,
-                              std::chrono::microseconds samplingPeriod,
-                              std::chrono::microseconds maxBatchReportLatency) = 0;
-
-    /* Disable sensor in input reader mapper. */
-    virtual void disableSensor(int32_t deviceId, InputDeviceSensorType sensorType) = 0;
-
-    /* Flush sensor data in input reader mapper. */
-    virtual void flushSensor(int32_t deviceId, InputDeviceSensorType sensorType) = 0;
-
-    /* Set color for the light */
-    virtual bool setLightColor(int32_t deviceId, int32_t lightId, int32_t color) = 0;
-    /* Set player ID for the light */
-    virtual bool setLightPlayerId(int32_t deviceId, int32_t lightId, int32_t playerId) = 0;
-    /* Get light color */
-    virtual std::optional<int32_t> getLightColor(int32_t deviceId, int32_t lightId) = 0;
-    /* Get light player ID */
-    virtual std::optional<int32_t> getLightPlayerId(int32_t deviceId, int32_t lightId) = 0;
-
-    /* Get the Bluetooth address of an input device, if known. */
-    virtual std::optional<std::string> getBluetoothAddress(int32_t deviceId) const = 0;
-
-    /* Sysfs node change reported. Recreate device if required to incorporate the new sysfs nodes */
-    virtual void sysfsNodeChanged(const std::string& sysfsNodePath) = 0;
-};
-
 // --- InputReaderConfiguration ---
 
 /*
@@ -163,51 +51,51 @@
  */
 struct InputReaderConfiguration {
     // Describes changes that have occurred.
-    enum {
+    enum class Change : uint32_t {
         // The mouse pointer speed changed.
-        CHANGE_POINTER_SPEED = 1 << 0,
+        POINTER_SPEED = 1u << 0,
 
         // The pointer gesture control changed.
-        CHANGE_POINTER_GESTURE_ENABLEMENT = 1 << 1,
+        POINTER_GESTURE_ENABLEMENT = 1u << 1,
 
         // The display size or orientation changed.
-        CHANGE_DISPLAY_INFO = 1 << 2,
+        DISPLAY_INFO = 1u << 2,
 
         // The visible touches option changed.
-        CHANGE_SHOW_TOUCHES = 1 << 3,
+        SHOW_TOUCHES = 1u << 3,
 
         // The keyboard layouts must be reloaded.
-        CHANGE_KEYBOARD_LAYOUTS = 1 << 4,
+        KEYBOARD_LAYOUTS = 1u << 4,
 
         // The device name alias supplied by the may have changed for some devices.
-        CHANGE_DEVICE_ALIAS = 1 << 5,
+        DEVICE_ALIAS = 1u << 5,
 
         // The location calibration matrix changed.
-        CHANGE_TOUCH_AFFINE_TRANSFORMATION = 1 << 6,
+        TOUCH_AFFINE_TRANSFORMATION = 1u << 6,
 
         // The presence of an external stylus has changed.
-        CHANGE_EXTERNAL_STYLUS_PRESENCE = 1 << 7,
+        EXTERNAL_STYLUS_PRESENCE = 1u << 7,
 
         // The pointer capture mode has changed.
-        CHANGE_POINTER_CAPTURE = 1 << 8,
+        POINTER_CAPTURE = 1u << 8,
 
         // The set of disabled input devices (disabledDevices) has changed.
-        CHANGE_ENABLED_STATE = 1 << 9,
+        ENABLED_STATE = 1u << 9,
 
         // The device type has been updated.
-        CHANGE_DEVICE_TYPE = 1 << 10,
+        DEVICE_TYPE = 1u << 10,
 
         // The keyboard layout association has changed.
-        CHANGE_KEYBOARD_LAYOUT_ASSOCIATION = 1 << 11,
+        KEYBOARD_LAYOUT_ASSOCIATION = 1u << 11,
 
         // The stylus button reporting configurations has changed.
-        CHANGE_STYLUS_BUTTON_REPORTING = 1 << 12,
+        STYLUS_BUTTON_REPORTING = 1u << 12,
 
         // The touchpad settings changed.
-        CHANGE_TOUCHPAD_SETTINGS = 1 << 13,
+        TOUCHPAD_SETTINGS = 1u << 13,
 
         // All devices must be reopened.
-        CHANGE_MUST_REOPEN = 1 << 31,
+        MUST_REOPEN = 1u << 31,
     };
 
     // Gets the amount of time to disable virtual keys after the screen is touched
@@ -367,8 +255,6 @@
             stylusButtonMotionEventsEnabled(true),
             stylusPointerIconEnabled(false) {}
 
-    static std::string changesToString(uint32_t changes);
-
     std::optional<DisplayViewport> getDisplayViewportByType(ViewportType type) const;
     std::optional<DisplayViewport> getDisplayViewportByUniqueId(const std::string& uniqueDisplayId)
             const;
@@ -383,6 +269,116 @@
     std::vector<DisplayViewport> mDisplays;
 };
 
+using ConfigurationChanges = ftl::Flags<InputReaderConfiguration::Change>;
+
+// --- InputReaderInterface ---
+
+/* The interface for the InputReader shared library.
+ *
+ * Manages one or more threads that process raw input events and sends cooked event data to an
+ * input listener.
+ *
+ * The implementation must guarantee thread safety for this interface. However, since the input
+ * listener is NOT thread safe, all calls to the listener must happen from the same thread.
+ */
+class InputReaderInterface {
+public:
+    InputReaderInterface() {}
+    virtual ~InputReaderInterface() {}
+    /* Dumps the state of the input reader.
+     *
+     * This method may be called on any thread (usually by the input manager). */
+    virtual void dump(std::string& dump) = 0;
+
+    /* Called by the heartbeat to ensures that the reader has not deadlocked. */
+    virtual void monitor() = 0;
+
+    /* Returns true if the input device is enabled. */
+    virtual bool isInputDeviceEnabled(int32_t deviceId) = 0;
+
+    /* Makes the reader start processing events from the kernel. */
+    virtual status_t start() = 0;
+
+    /* Makes the reader stop processing any more events. */
+    virtual status_t stop() = 0;
+
+    /* Gets information about all input devices.
+     *
+     * This method may be called on any thread (usually by the input manager).
+     */
+    virtual std::vector<InputDeviceInfo> getInputDevices() const = 0;
+
+    /* Query current input state. */
+    virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, int32_t scanCode) = 0;
+    virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, int32_t keyCode) = 0;
+    virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t sw) = 0;
+
+    virtual void addKeyRemapping(int32_t deviceId, int32_t fromKeyCode,
+                                 int32_t toKeyCode) const = 0;
+
+    virtual int32_t getKeyCodeForKeyLocation(int32_t deviceId, int32_t locationKeyCode) const = 0;
+
+    /* Toggle Caps Lock */
+    virtual void toggleCapsLockState(int32_t deviceId) = 0;
+
+    /* Determine whether physical keys exist for the given framework-domain key codes. */
+    virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask,
+                         const std::vector<int32_t>& keyCodes, uint8_t* outFlags) = 0;
+
+    /* Requests that a reconfiguration of all input devices.
+     * The changes flag is a bitfield that indicates what has changed and whether
+     * the input devices must all be reopened. */
+    virtual void requestRefreshConfiguration(ConfigurationChanges changes) = 0;
+
+    /* Controls the vibrator of a particular input device. */
+    virtual void vibrate(int32_t deviceId, const VibrationSequence& sequence, ssize_t repeat,
+                         int32_t token) = 0;
+    virtual void cancelVibrate(int32_t deviceId, int32_t token) = 0;
+
+    virtual bool isVibrating(int32_t deviceId) = 0;
+
+    virtual std::vector<int32_t> getVibratorIds(int32_t deviceId) = 0;
+    /* Get battery level of a particular input device. */
+    virtual std::optional<int32_t> getBatteryCapacity(int32_t deviceId) = 0;
+    /* Get battery status of a particular input device. */
+    virtual std::optional<int32_t> getBatteryStatus(int32_t deviceId) = 0;
+    /* Get the device path for the battery of an input device. */
+    virtual std::optional<std::string> getBatteryDevicePath(int32_t deviceId) = 0;
+
+    virtual std::vector<InputDeviceLightInfo> getLights(int32_t deviceId) = 0;
+
+    virtual std::vector<InputDeviceSensorInfo> getSensors(int32_t deviceId) = 0;
+
+    /* Return true if the device can send input events to the specified display. */
+    virtual bool canDispatchToDisplay(int32_t deviceId, int32_t displayId) = 0;
+
+    /* Enable sensor in input reader mapper. */
+    virtual bool enableSensor(int32_t deviceId, InputDeviceSensorType sensorType,
+                              std::chrono::microseconds samplingPeriod,
+                              std::chrono::microseconds maxBatchReportLatency) = 0;
+
+    /* Disable sensor in input reader mapper. */
+    virtual void disableSensor(int32_t deviceId, InputDeviceSensorType sensorType) = 0;
+
+    /* Flush sensor data in input reader mapper. */
+    virtual void flushSensor(int32_t deviceId, InputDeviceSensorType sensorType) = 0;
+
+    /* Set color for the light */
+    virtual bool setLightColor(int32_t deviceId, int32_t lightId, int32_t color) = 0;
+    /* Set player ID for the light */
+    virtual bool setLightPlayerId(int32_t deviceId, int32_t lightId, int32_t playerId) = 0;
+    /* Get light color */
+    virtual std::optional<int32_t> getLightColor(int32_t deviceId, int32_t lightId) = 0;
+    /* Get light player ID */
+    virtual std::optional<int32_t> getLightPlayerId(int32_t deviceId, int32_t lightId) = 0;
+
+    /* Get the Bluetooth address of an input device, if known. */
+    virtual std::optional<std::string> getBluetoothAddress(int32_t deviceId) const = 0;
+
+    /* Sysfs node change reported. Recreate device if required to incorporate the new sysfs nodes */
+    virtual void sysfsNodeChanged(const std::string& sysfsNodePath) = 0;
+};
+
 // --- TouchAffineTransformation ---
 
 struct TouchAffineTransformation {
diff --git a/services/inputflinger/reader/InputDevice.cpp b/services/inputflinger/reader/InputDevice.cpp
index b5ee044..b86906b 100644
--- a/services/inputflinger/reader/InputDevice.cpp
+++ b/services/inputflinger/reader/InputDevice.cpp
@@ -180,7 +180,7 @@
 
 std::list<NotifyArgs> InputDevice::configure(nsecs_t when,
                                              const InputReaderConfiguration& readerConfig,
-                                             uint32_t changes) {
+                                             ConfigurationChanges changes) {
     std::list<NotifyArgs> out;
     mSources = 0;
     mClasses = ftl::Flags<InputDeviceClass>(0);
@@ -201,12 +201,14 @@
     mIsExternal = mClasses.test(InputDeviceClass::EXTERNAL);
     mHasMic = mClasses.test(InputDeviceClass::MIC);
 
+    using Change = InputReaderConfiguration::Change;
+
     if (!isIgnored()) {
         // Full configuration should happen the first time configure is called
         // and when the device type is changed. Changing a device type can
         // affect various other parameters so should result in a
         // reconfiguration.
-        if (!changes || (changes & InputReaderConfiguration::CHANGE_DEVICE_TYPE)) {
+        if (!changes.any() || changes.test(Change::DEVICE_TYPE)) {
             mConfiguration.clear();
             for_each_subdevice([this](InputDeviceContext& context) {
                 std::optional<PropertyMap> configuration =
@@ -220,7 +222,7 @@
                     getValueByKey(readerConfig.deviceTypeAssociations, mIdentifier.location);
         }
 
-        if (!changes || (changes & InputReaderConfiguration::CHANGE_KEYBOARD_LAYOUTS)) {
+        if (!changes.any() || changes.test(Change::KEYBOARD_LAYOUTS)) {
             if (!mClasses.test(InputDeviceClass::VIRTUAL)) {
                 std::shared_ptr<KeyCharacterMap> keyboardLayout =
                         mContext->getPolicy()->getKeyboardLayoutOverlay(mIdentifier);
@@ -237,7 +239,7 @@
             }
         }
 
-        if (!changes || (changes & InputReaderConfiguration::CHANGE_DEVICE_ALIAS)) {
+        if (!changes.any() || changes.test(Change::DEVICE_ALIAS)) {
             if (!(mClasses.test(InputDeviceClass::VIRTUAL))) {
                 std::string alias = mContext->getPolicy()->getDeviceAlias(mIdentifier);
                 if (mAlias != alias) {
@@ -247,7 +249,7 @@
             }
         }
 
-        if (changes & InputReaderConfiguration::CHANGE_ENABLED_STATE) {
+        if (changes.test(Change::ENABLED_STATE)) {
             // Do not execute this code on the first configure, because 'setEnabled' would call
             // InputMapper::reset, and you can't reset a mapper before it has been configured.
             // The mappers are configured for the first time at the bottom of this function.
@@ -256,7 +258,7 @@
             out += setEnabled(enabled, when);
         }
 
-        if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+        if (!changes.any() || changes.test(Change::DISPLAY_INFO)) {
             // In most situations, no port or name will be specified.
             mAssociatedDisplayPort = std::nullopt;
             mAssociatedDisplayUniqueId = std::nullopt;
@@ -305,7 +307,7 @@
                 }
             }
 
-            if (changes) {
+            if (changes.any()) {
                 // For first-time configuration, only allow device to be disabled after mappers have
                 // finished configuring. This is because we need to read some of the properties from
                 // the device's open fd.
@@ -320,7 +322,7 @@
 
         // If a device is just plugged but it might be disabled, we need to update some info like
         // axis range of touch from each InputMapper first, then disable it.
-        if (!changes) {
+        if (!changes.any()) {
             out += setEnabled(readerConfig.disabledDevices.find(mId) ==
                                       readerConfig.disabledDevices.end(),
                               when);
diff --git a/services/inputflinger/reader/InputReader.cpp b/services/inputflinger/reader/InputReader.cpp
index 0afe79d..ea95f78 100644
--- a/services/inputflinger/reader/InputReader.cpp
+++ b/services/inputflinger/reader/InputReader.cpp
@@ -85,7 +85,7 @@
         mDisableVirtualKeysTimeout(LLONG_MIN),
         mNextTimeout(LLONG_MAX),
         mConfigurationChangesToRefresh(0) {
-    refreshConfigurationLocked(0);
+    refreshConfigurationLocked(/*changes=*/{});
     updateGlobalMetaStateLocked();
 }
 
@@ -122,9 +122,9 @@
         oldGeneration = mGeneration;
         timeoutMillis = -1;
 
-        uint32_t changes = mConfigurationChangesToRefresh;
-        if (changes) {
-            mConfigurationChangesToRefresh = 0;
+        auto changes = mConfigurationChangesToRefresh;
+        if (changes.any()) {
+            mConfigurationChangesToRefresh.clear();
             timeoutMillis = 0;
             refreshConfigurationLocked(changes);
         } else if (mNextTimeout != LLONG_MAX) {
@@ -236,7 +236,7 @@
     InputDeviceIdentifier identifier = mEventHub->getDeviceIdentifier(eventHubId);
     std::shared_ptr<InputDevice> device = createDeviceLocked(eventHubId, identifier);
 
-    notifyAll(device->configure(when, mConfig, 0));
+    notifyAll(device->configure(when, mConfig, /*changes=*/{}));
     notifyAll(device->reset(when));
 
     if (device->isIgnored()) {
@@ -312,7 +312,7 @@
 
     std::list<NotifyArgs> resetEvents;
     if (device->hasEventHubDevices()) {
-        resetEvents += device->configure(when, mConfig, 0);
+        resetEvents += device->configure(when, mConfig, /*changes=*/{});
     }
     resetEvents += device->reset(when);
     notifyAll(std::move(resetEvents));
@@ -390,21 +390,21 @@
     mQueuedListener.notifyConfigurationChanged({mContext.getNextId(), when});
 }
 
-void InputReader::refreshConfigurationLocked(uint32_t changes) {
+void InputReader::refreshConfigurationLocked(ConfigurationChanges changes) {
     mPolicy->getReaderConfiguration(&mConfig);
     mEventHub->setExcludedDevices(mConfig.excludedDeviceNames);
 
-    if (!changes) return;
+    using Change = InputReaderConfiguration::Change;
+    if (!changes.any()) return;
 
-    ALOGI("Reconfiguring input devices, changes=%s",
-          InputReaderConfiguration::changesToString(changes).c_str());
+    ALOGI("Reconfiguring input devices, changes=%s", changes.string().c_str());
     nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
 
-    if (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO) {
+    if (changes.test(Change::DISPLAY_INFO)) {
         updatePointerDisplayLocked();
     }
 
-    if (changes & InputReaderConfiguration::CHANGE_MUST_REOPEN) {
+    if (changes.test(Change::MUST_REOPEN)) {
         mEventHub->requestReopenDevices();
     } else {
         for (auto& devicePair : mDevices) {
@@ -413,7 +413,7 @@
         }
     }
 
-    if (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE) {
+    if (changes.test(Change::POINTER_CAPTURE)) {
         if (mCurrentPointerCaptureRequest == mConfig.pointerCaptureRequest) {
             ALOGV("Skipping notifying pointer capture changes: "
                   "There was no change in the pointer capture state.");
@@ -457,7 +457,7 @@
 }
 
 void InputReader::notifyExternalStylusPresenceChangedLocked() {
-    refreshConfigurationLocked(InputReaderConfiguration::CHANGE_EXTERNAL_STYLUS_PRESENCE);
+    refreshConfigurationLocked(InputReaderConfiguration::Change::EXTERNAL_STYLUS_PRESENCE);
 }
 
 void InputReader::getExternalStylusDevicesLocked(std::vector<InputDeviceInfo>& outDevices) {
@@ -671,11 +671,11 @@
     return device->getKeyCodeForKeyLocation(locationKeyCode);
 }
 
-void InputReader::requestRefreshConfiguration(uint32_t changes) {
+void InputReader::requestRefreshConfiguration(ConfigurationChanges changes) {
     std::scoped_lock _l(mLock);
 
-    if (changes) {
-        bool needWake = !mConfigurationChangesToRefresh;
+    if (changes.any()) {
+        bool needWake = !mConfigurationChangesToRefresh.any();
         mConfigurationChangesToRefresh |= changes;
 
         if (needWake) {
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 2091e16..73351c4 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -85,7 +85,7 @@
     void removeEventHubDevice(int32_t eventHubId);
     [[nodiscard]] std::list<NotifyArgs> configure(nsecs_t when,
                                                   const InputReaderConfiguration& readerConfig,
-                                                  uint32_t changes);
+                                                  ConfigurationChanges changes);
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when);
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvents, size_t count);
     [[nodiscard]] std::list<NotifyArgs> timeoutExpired(nsecs_t when);
diff --git a/services/inputflinger/reader/include/InputReader.h b/services/inputflinger/reader/include/InputReader.h
index 120e150..9112913 100644
--- a/services/inputflinger/reader/include/InputReader.h
+++ b/services/inputflinger/reader/include/InputReader.h
@@ -77,7 +77,7 @@
     bool hasKeys(int32_t deviceId, uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
                  uint8_t* outFlags) override;
 
-    void requestRefreshConfiguration(uint32_t changes) override;
+    void requestRefreshConfiguration(ConfigurationChanges changes) override;
 
     void vibrate(int32_t deviceId, const VibrationSequence& sequence, ssize_t repeat,
                  int32_t token) override;
@@ -233,8 +233,8 @@
     nsecs_t mNextTimeout GUARDED_BY(mLock);
     void requestTimeoutAtTimeLocked(nsecs_t when) REQUIRES(mLock);
 
-    uint32_t mConfigurationChangesToRefresh GUARDED_BY(mLock);
-    void refreshConfigurationLocked(uint32_t changes) REQUIRES(mLock);
+    ConfigurationChanges mConfigurationChangesToRefresh GUARDED_BY(mLock);
+    void refreshConfigurationLocked(ConfigurationChanges changes) REQUIRES(mLock);
 
     void notifyAll(std::list<NotifyArgs>&& argsList);
 
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.cpp b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
index adc893b..8ef5ff6 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
@@ -139,26 +139,26 @@
 
 std::list<NotifyArgs> CursorInputMapper::reconfigure(nsecs_t when,
                                                      const InputReaderConfiguration& readerConfig,
-                                                     uint32_t changes) {
+                                                     ConfigurationChanges changes) {
     std::list<NotifyArgs> out = InputMapper::reconfigure(when, readerConfig, changes);
 
-    if (!changes) {
+    if (!changes.any()) {
         configureWithZeroChanges(readerConfig);
         return out;
     }
 
     const bool configurePointerCapture = mParameters.mode != Parameters::Mode::NAVIGATION &&
-            (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+            changes.test(InputReaderConfiguration::Change::POINTER_CAPTURE);
     if (configurePointerCapture) {
         configureOnPointerCapture(readerConfig);
         out.push_back(NotifyDeviceResetArgs(getContext()->getNextId(), when, getDeviceId()));
     }
 
-    if ((changes & InputReaderConfiguration::CHANGE_POINTER_SPEED) || configurePointerCapture) {
+    if (changes.test(InputReaderConfiguration::Change::POINTER_SPEED) || configurePointerCapture) {
         configureOnChangePointerSpeed(readerConfig);
     }
 
-    if ((changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO) || configurePointerCapture) {
+    if (changes.test(InputReaderConfiguration::Change::DISPLAY_INFO) || configurePointerCapture) {
         configureOnChangeDisplayInfo(readerConfig);
     }
     return out;
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.h b/services/inputflinger/reader/mapper/CursorInputMapper.h
index a7cdd51..caf2e5a 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.h
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.h
@@ -62,7 +62,7 @@
     virtual void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& readerConfig,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/reader/mapper/ExternalStylusInputMapper.cpp b/services/inputflinger/reader/mapper/ExternalStylusInputMapper.cpp
index 7100f88..987d2d0 100644
--- a/services/inputflinger/reader/mapper/ExternalStylusInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/ExternalStylusInputMapper.cpp
@@ -49,7 +49,7 @@
 
 std::list<NotifyArgs> ExternalStylusInputMapper::reconfigure(nsecs_t when,
                                                              const InputReaderConfiguration& config,
-                                                             uint32_t changes) {
+                                                             ConfigurationChanges changes) {
     getAbsoluteAxisInfo(ABS_PRESSURE, &mRawPressureAxis);
     mTouchButtonAccumulator.configure();
     return {};
diff --git a/services/inputflinger/reader/mapper/ExternalStylusInputMapper.h b/services/inputflinger/reader/mapper/ExternalStylusInputMapper.h
index 7f926a7..841c437 100644
--- a/services/inputflinger/reader/mapper/ExternalStylusInputMapper.h
+++ b/services/inputflinger/reader/mapper/ExternalStylusInputMapper.h
@@ -35,7 +35,7 @@
     void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/reader/mapper/InputMapper.cpp b/services/inputflinger/reader/mapper/InputMapper.cpp
index bd86a5a..0692dbb 100644
--- a/services/inputflinger/reader/mapper/InputMapper.cpp
+++ b/services/inputflinger/reader/mapper/InputMapper.cpp
@@ -38,7 +38,7 @@
 void InputMapper::dump(std::string& dump) {}
 
 std::list<NotifyArgs> InputMapper::reconfigure(nsecs_t when, const InputReaderConfiguration& config,
-                                               uint32_t changes) {
+                                               ConfigurationChanges changes) {
     return {};
 }
 
diff --git a/services/inputflinger/reader/mapper/InputMapper.h b/services/inputflinger/reader/mapper/InputMapper.h
index 211be9f..f017317 100644
--- a/services/inputflinger/reader/mapper/InputMapper.h
+++ b/services/inputflinger/reader/mapper/InputMapper.h
@@ -55,7 +55,7 @@
     virtual void dump(std::string& dump);
     [[nodiscard]] virtual std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                             const InputReaderConfiguration& config,
-                                                            uint32_t changes);
+                                                            ConfigurationChanges changes);
     [[nodiscard]] virtual std::list<NotifyArgs> reset(nsecs_t when);
     [[nodiscard]] virtual std::list<NotifyArgs> process(const RawEvent* rawEvent) = 0;
     [[nodiscard]] virtual std::list<NotifyArgs> timeoutExpired(nsecs_t when);
diff --git a/services/inputflinger/reader/mapper/JoystickInputMapper.cpp b/services/inputflinger/reader/mapper/JoystickInputMapper.cpp
index 3450f86..099a955 100644
--- a/services/inputflinger/reader/mapper/JoystickInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/JoystickInputMapper.cpp
@@ -106,10 +106,10 @@
 
 std::list<NotifyArgs> JoystickInputMapper::reconfigure(nsecs_t when,
                                                        const InputReaderConfiguration& config,
-                                                       uint32_t changes) {
+                                                       ConfigurationChanges changes) {
     std::list<NotifyArgs> out = InputMapper::reconfigure(when, config, changes);
 
-    if (!changes) { // first time only
+    if (!changes.any()) { // first time only
         // Collect all axes.
         for (int32_t abs = 0; abs <= ABS_MAX; abs++) {
             if (!(getAbsAxisUsage(abs, getDeviceContext().getDeviceClasses())
diff --git a/services/inputflinger/reader/mapper/JoystickInputMapper.h b/services/inputflinger/reader/mapper/JoystickInputMapper.h
index c9e92de..49673a2 100644
--- a/services/inputflinger/reader/mapper/JoystickInputMapper.h
+++ b/services/inputflinger/reader/mapper/JoystickInputMapper.h
@@ -31,7 +31,7 @@
     virtual void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
index 63ea3a8..582fb46 100644
--- a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
@@ -134,19 +134,20 @@
 
 std::list<NotifyArgs> KeyboardInputMapper::reconfigure(nsecs_t when,
                                                        const InputReaderConfiguration& config,
-                                                       uint32_t changes) {
+                                                       ConfigurationChanges changes) {
     std::list<NotifyArgs> out = InputMapper::reconfigure(when, config, changes);
 
-    if (!changes) { // first time only
+    if (!changes.any()) { // first time only
         // Configure basic parameters.
         configureParameters();
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+    if (!changes.any() || changes.test(InputReaderConfiguration::Change::DISPLAY_INFO)) {
         mViewport = findViewport(config);
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_KEYBOARD_LAYOUT_ASSOCIATION)) {
+    if (!changes.any() ||
+        changes.test(InputReaderConfiguration::Change::KEYBOARD_LAYOUT_ASSOCIATION)) {
         mKeyboardLayoutInfo =
                 getValueByKey(config.keyboardLayoutAssociations, getDeviceContext().getLocation());
     }
diff --git a/services/inputflinger/reader/mapper/KeyboardInputMapper.h b/services/inputflinger/reader/mapper/KeyboardInputMapper.h
index 25fad57..bd27383 100644
--- a/services/inputflinger/reader/mapper/KeyboardInputMapper.h
+++ b/services/inputflinger/reader/mapper/KeyboardInputMapper.h
@@ -33,7 +33,7 @@
     void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp b/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp
index 2ffa5cd..13f2e59 100644
--- a/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp
@@ -66,12 +66,12 @@
 
 std::list<NotifyArgs> RotaryEncoderInputMapper::reconfigure(nsecs_t when,
                                                             const InputReaderConfiguration& config,
-                                                            uint32_t changes) {
+                                                            ConfigurationChanges changes) {
     std::list<NotifyArgs> out = InputMapper::reconfigure(when, config, changes);
-    if (!changes) {
+    if (!changes.any()) {
         mRotaryEncoderScrollAccumulator.configure(getDeviceContext());
     }
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+    if (!changes.any() || changes.test(InputReaderConfiguration::Change::DISPLAY_INFO)) {
         std::optional<DisplayViewport> internalViewport =
                 config.getDisplayViewportByType(ViewportType::INTERNAL);
         if (internalViewport) {
diff --git a/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.h b/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.h
index 8feaf8e..d3dcbe1 100644
--- a/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.h
+++ b/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.h
@@ -34,7 +34,7 @@
     virtual void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/reader/mapper/SensorInputMapper.cpp b/services/inputflinger/reader/mapper/SensorInputMapper.cpp
index f7f23a4..a131e35 100644
--- a/services/inputflinger/reader/mapper/SensorInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/SensorInputMapper.cpp
@@ -119,10 +119,10 @@
 
 std::list<NotifyArgs> SensorInputMapper::reconfigure(nsecs_t when,
                                                      const InputReaderConfiguration& config,
-                                                     uint32_t changes) {
+                                                     ConfigurationChanges changes) {
     std::list<NotifyArgs> out = InputMapper::reconfigure(when, config, changes);
 
-    if (!changes) { // first time only
+    if (!changes.any()) { // first time only
         mDeviceEnabled = true;
         // Check if device has MSC_TIMESTAMP event.
         mHasHardwareTimestamp = getDeviceContext().hasMscEvent(MSC_TIMESTAMP);
diff --git a/services/inputflinger/reader/mapper/SensorInputMapper.h b/services/inputflinger/reader/mapper/SensorInputMapper.h
index 2f3a396..1f82559 100644
--- a/services/inputflinger/reader/mapper/SensorInputMapper.h
+++ b/services/inputflinger/reader/mapper/SensorInputMapper.h
@@ -36,7 +36,7 @@
     void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
     bool enableSensor(InputDeviceSensorType sensorType, std::chrono::microseconds samplingPeriod,
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index 60bf857..55b869a 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -290,7 +290,7 @@
 
 std::list<NotifyArgs> TouchInputMapper::reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) {
+                                                    ConfigurationChanges changes) {
     std::list<NotifyArgs> out = InputMapper::reconfigure(when, config, changes);
 
     mConfig = config;
@@ -298,7 +298,7 @@
     // Full configuration should happen the first time configure is called and
     // when the device type is changed. Changing a device type can affect
     // various other parameters so should result in a reconfiguration.
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_DEVICE_TYPE)) {
+    if (!changes.any() || changes.test(InputReaderConfiguration::Change::DEVICE_TYPE)) {
         // Configure basic parameters.
         configureParameters();
 
@@ -314,33 +314,34 @@
         resolveCalibration();
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_TOUCH_AFFINE_TRANSFORMATION)) {
+    if (!changes.any() ||
+        changes.test(InputReaderConfiguration::Change::TOUCH_AFFINE_TRANSFORMATION)) {
         // Update location calibration to reflect current settings
         updateAffineTransformation();
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_POINTER_SPEED)) {
+    if (!changes.any() || changes.test(InputReaderConfiguration::Change::POINTER_SPEED)) {
         // Update pointer speed.
         mPointerVelocityControl.setParameters(mConfig.pointerVelocityControlParameters);
         mWheelXVelocityControl.setParameters(mConfig.wheelVelocityControlParameters);
         mWheelYVelocityControl.setParameters(mConfig.wheelVelocityControlParameters);
     }
 
+    using namespace ftl::flag_operators;
     bool resetNeeded = false;
-    if (!changes ||
-        (changes &
-         (InputReaderConfiguration::CHANGE_DISPLAY_INFO |
-          InputReaderConfiguration::CHANGE_POINTER_CAPTURE |
-          InputReaderConfiguration::CHANGE_POINTER_GESTURE_ENABLEMENT |
-          InputReaderConfiguration::CHANGE_SHOW_TOUCHES |
-          InputReaderConfiguration::CHANGE_EXTERNAL_STYLUS_PRESENCE |
-          InputReaderConfiguration::CHANGE_DEVICE_TYPE))) {
+    if (!changes.any() ||
+        changes.any(InputReaderConfiguration::Change::DISPLAY_INFO |
+                    InputReaderConfiguration::Change::POINTER_CAPTURE |
+                    InputReaderConfiguration::Change::POINTER_GESTURE_ENABLEMENT |
+                    InputReaderConfiguration::Change::SHOW_TOUCHES |
+                    InputReaderConfiguration::Change::EXTERNAL_STYLUS_PRESENCE |
+                    InputReaderConfiguration::Change::DEVICE_TYPE)) {
         // Configure device sources, display dimensions, orientation and
         // scaling factors.
         configureInputDevice(when, &resetNeeded);
     }
 
-    if (changes && resetNeeded) {
+    if (changes.any() && resetNeeded) {
         out += reset(when);
 
         // Send reset, unless this is the first time the device has been configured,
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.h b/services/inputflinger/reader/mapper/TouchInputMapper.h
index e7d66a1..e023e90 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.h
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.h
@@ -155,7 +155,7 @@
     void dump(std::string& dump) override;
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
index 5a1ced4..8753b48 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
@@ -222,13 +222,13 @@
 
 std::list<NotifyArgs> TouchpadInputMapper::reconfigure(nsecs_t when,
                                                        const InputReaderConfiguration& config,
-                                                       uint32_t changes) {
-    if (!changes) {
+                                                       ConfigurationChanges changes) {
+    if (!changes.any()) {
         // First time configuration
         mPropertyProvider.loadPropertiesFromIdcFile(getDeviceContext().getConfiguration());
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+    if (!changes.any() || changes.test(InputReaderConfiguration::Change::DISPLAY_INFO)) {
         std::optional<int32_t> displayId = mPointerController->getDisplayId();
         ui::Rotation orientation = ui::ROTATION_0;
         if (displayId.has_value()) {
@@ -238,7 +238,7 @@
         }
         mGestureConverter.setOrientation(orientation);
     }
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_TOUCHPAD_SETTINGS)) {
+    if (!changes.any() || changes.test(InputReaderConfiguration::Change::TOUCHPAD_SETTINGS)) {
         mPropertyProvider.getProperty("Use Custom Touchpad Pointer Accel Curve")
                 .setBoolValues({true});
         GesturesProp accelCurveProp = mPropertyProvider.getProperty("Pointer Accel Curve");
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.h b/services/inputflinger/reader/mapper/TouchpadInputMapper.h
index e051097..268b275 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.h
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.h
@@ -47,7 +47,7 @@
 
     [[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
                                                     const InputReaderConfiguration& config,
-                                                    uint32_t changes) override;
+                                                    ConfigurationChanges changes) override;
     [[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
     [[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
 
diff --git a/services/inputflinger/tests/InputMapperTest.cpp b/services/inputflinger/tests/InputMapperTest.cpp
index ae30006..ad48a79 100644
--- a/services/inputflinger/tests/InputMapperTest.cpp
+++ b/services/inputflinger/tests/InputMapperTest.cpp
@@ -50,12 +50,12 @@
     mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, key, value);
 }
 
-std::list<NotifyArgs> InputMapperTest::configureDevice(uint32_t changes) {
-    if (!changes ||
-        (changes &
-         (InputReaderConfiguration::CHANGE_DISPLAY_INFO |
-          InputReaderConfiguration::CHANGE_POINTER_CAPTURE |
-          InputReaderConfiguration::CHANGE_DEVICE_TYPE))) {
+std::list<NotifyArgs> InputMapperTest::configureDevice(ConfigurationChanges changes) {
+    using namespace ftl::flag_operators;
+    if (!changes.any() ||
+        (changes.any(InputReaderConfiguration::Change::DISPLAY_INFO |
+                     InputReaderConfiguration::Change::POINTER_CAPTURE |
+                     InputReaderConfiguration::Change::DEVICE_TYPE))) {
         mReader->requestRefreshConfiguration(changes);
         mReader->loopOnce();
     }
@@ -94,7 +94,7 @@
                                                    ViewportType viewportType) {
     mFakePolicy->addDisplayViewport(displayId, width, height, orientation, /* isActive= */ true,
                                     uniqueId, physicalPort, viewportType);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 }
 
 void InputMapperTest::clearViewports() {
diff --git a/services/inputflinger/tests/InputMapperTest.h b/services/inputflinger/tests/InputMapperTest.h
index df601ea..d969034 100644
--- a/services/inputflinger/tests/InputMapperTest.h
+++ b/services/inputflinger/tests/InputMapperTest.h
@@ -54,7 +54,7 @@
     void TearDown() override;
 
     void addConfigurationProperty(const char* key, const char* value);
-    std::list<NotifyArgs> configureDevice(uint32_t changes);
+    std::list<NotifyArgs> configureDevice(ConfigurationChanges changes);
     std::shared_ptr<InputDevice> newDevice(int32_t deviceId, const std::string& name,
                                            const std::string& location, int32_t eventHubId,
                                            ftl::Flags<InputDeviceClass> classes, int bus = 0);
@@ -62,7 +62,7 @@
     T& addMapperAndConfigure(Args... args) {
         T& mapper =
                 mDevice->addMapper<T>(EVENTHUB_ID, mFakePolicy->getReaderConfiguration(), args...);
-        configureDevice(0);
+        configureDevice(/*changes=*/{});
         std::list<NotifyArgs> resetArgList = mDevice->reset(ARBITRARY_TIME);
         resetArgList += mapper.reset(ARBITRARY_TIME);
         // Loop the reader to flush the input listener queue.
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index da3fe5b..0b50504 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -265,13 +265,13 @@
     }
 
     std::list<NotifyArgs> reconfigure(nsecs_t, const InputReaderConfiguration& config,
-                                      uint32_t changes) override {
+                                      ConfigurationChanges changes) override {
         std::scoped_lock<std::mutex> lock(mLock);
         mConfigureWasCalled = true;
 
         // Find the associated viewport if exist.
         const std::optional<uint8_t> displayPort = getDeviceContext().getAssociatedDisplayPort();
-        if (displayPort && (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+        if (displayPort && changes.test(InputReaderConfiguration::Change::DISPLAY_INFO)) {
             mViewport = config.getDisplayViewportByPort(*displayPort);
         }
 
@@ -610,12 +610,12 @@
 
     void disableDevice(int32_t deviceId) {
         mFakePolicy->addDisabledDevice(deviceId);
-        mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_ENABLED_STATE);
+        mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::ENABLED_STATE);
     }
 
     void enableDevice(int32_t deviceId) {
         mFakePolicy->removeDisabledDevice(deviceId);
-        mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_ENABLED_STATE);
+        mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::ENABLED_STATE);
     }
 
     FakeInputMapper& addDeviceWithFakeInputMapper(int32_t deviceId, int32_t eventHubId,
@@ -1043,7 +1043,7 @@
     mFakePolicy->addDisplayViewport(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
                                     ui::ROTATION_0, /*isActive=*/true, "local:1", hdmi1,
                                     ViewportType::EXTERNAL);
-    mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::DISPLAY_INFO);
     mReader->loopOnce();
 
     // Add the device, and make sure all of the callbacks are triggered.
@@ -1142,21 +1142,21 @@
     NotifyPointerCaptureChangedArgs args;
 
     auto request = mFakePolicy->setPointerCapture(true);
-    mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::POINTER_CAPTURE);
     mReader->loopOnce();
     mFakeListener->assertNotifyCaptureWasCalled(&args);
     ASSERT_TRUE(args.request.enable) << "Pointer Capture should be enabled.";
     ASSERT_EQ(args.request, request) << "Pointer Capture sequence number should match.";
 
     mFakePolicy->setPointerCapture(false);
-    mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::POINTER_CAPTURE);
     mReader->loopOnce();
     mFakeListener->assertNotifyCaptureWasCalled(&args);
     ASSERT_FALSE(args.request.enable) << "Pointer Capture should be disabled.";
 
     // Verify that the Pointer Capture state is not updated when the configuration value
     // does not change.
-    mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::POINTER_CAPTURE);
     mReader->loopOnce();
     mFakeListener->assertNotifyCaptureWasNotCalled();
 }
@@ -1527,7 +1527,7 @@
                                       ViewportType viewportType) {
         mFakePolicy->addDisplayViewport(displayId, width, height, orientation, /*isActive=*/true,
                                         uniqueId, physicalPort, viewportType);
-        mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+        mReader->requestRefreshConfiguration(InputReaderConfiguration::Change::DISPLAY_INFO);
     }
 
     void assertReceivedMotion(int32_t action, const std::vector<Point>& points) {
@@ -2070,7 +2070,7 @@
 TYPED_TEST(StylusButtonIntegrationTest, DISABLED_StylusButtonMotionEventsDisabled) {
     TestFixture::mFakePolicy->setStylusButtonMotionEventsEnabled(false);
     TestFixture::mReader->requestRefreshConfiguration(
-            InputReaderConfiguration::CHANGE_STYLUS_BUTTON_REPORTING);
+            InputReaderConfiguration::Change::STYLUS_BUTTON_REPORTING);
 
     const Point centerPoint = TestFixture::mTouchscreen->getCenterPoint();
     const auto touchscreenId = TestFixture::mTouchscreenInfo.getId();
@@ -2341,7 +2341,7 @@
 TEST_F(InputDeviceTest, WhenNoMappersAreRegistered_DeviceIsIgnored) {
     // Configuration.
     InputReaderConfiguration config;
-    std::list<NotifyArgs> unused = mDevice->configure(ARBITRARY_TIME, config, 0);
+    std::list<NotifyArgs> unused = mDevice->configure(ARBITRARY_TIME, config, /*changes=*/{});
 
     // Reset.
     unused += mDevice->reset(ARBITRARY_TIME);
@@ -2402,7 +2402,7 @@
     mapper2.setMetaState(AMETA_SHIFT_ON);
 
     InputReaderConfiguration config;
-    std::list<NotifyArgs> unused = mDevice->configure(ARBITRARY_TIME, config, 0);
+    std::list<NotifyArgs> unused = mDevice->configure(ARBITRARY_TIME, config, /*changes=*/{});
 
     std::optional<std::string> propertyValue = mDevice->getConfiguration().getString("key");
     ASSERT_TRUE(propertyValue.has_value())
@@ -2484,7 +2484,8 @@
 
     // First Configuration.
     std::list<NotifyArgs> unused =
-            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
 
     // Device should be enabled by default.
     ASSERT_TRUE(mDevice->isEnabled());
@@ -2495,7 +2496,7 @@
 
     mFakePolicy->addInputPortAssociation(DEVICE_LOCATION, hdmi);
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     // Device should be disabled because it is associated with a specific display via
     // input port <-> display port association, but the corresponding display is not found
     ASSERT_FALSE(mDevice->isEnabled());
@@ -2505,18 +2506,18 @@
                                     ui::ROTATION_0, /*isActive=*/true, UNIQUE_ID, hdmi,
                                     ViewportType::INTERNAL);
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_TRUE(mDevice->isEnabled());
 
     // Device should be disabled after set disable.
     mFakePolicy->addDisabledDevice(mDevice->getId());
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_ENABLED_STATE);
+                                 InputReaderConfiguration::Change::ENABLED_STATE);
     ASSERT_FALSE(mDevice->isEnabled());
 
     // Device should still be disabled even found the associated display.
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_FALSE(mDevice->isEnabled());
 }
 
@@ -2526,14 +2527,15 @@
     mDevice->addMapper<FakeInputMapper>(EVENTHUB_ID, mFakePolicy->getReaderConfiguration(),
                                         AINPUT_SOURCE_KEYBOARD);
     std::list<NotifyArgs> unused =
-            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
     ASSERT_TRUE(mDevice->isEnabled());
 
     // Device should be disabled because it is associated with a specific display, but the
     // corresponding display is not found.
     mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_FALSE(mDevice->isEnabled());
 
     // Device should be enabled when a display is found.
@@ -2541,18 +2543,18 @@
                                     ui::ROTATION_0, /* isActive= */ true, DISPLAY_UNIQUE_ID,
                                     NO_PORT, ViewportType::INTERNAL);
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_TRUE(mDevice->isEnabled());
 
     // Device should be disabled after set disable.
     mFakePolicy->addDisabledDevice(mDevice->getId());
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_ENABLED_STATE);
+                                 InputReaderConfiguration::Change::ENABLED_STATE);
     ASSERT_FALSE(mDevice->isEnabled());
 
     // Device should still be disabled even found the associated display.
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_FALSE(mDevice->isEnabled());
 }
 
@@ -2561,14 +2563,15 @@
     mDevice->addMapper<FakeInputMapper>(EVENTHUB_ID, mFakePolicy->getReaderConfiguration(),
                                         AINPUT_SOURCE_KEYBOARD);
     std::list<NotifyArgs> unused =
-            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
 
     mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     mFakePolicy->addDisplayViewport(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
                                     ui::ROTATION_0, /* isActive= */ true, DISPLAY_UNIQUE_ID,
                                     NO_PORT, ViewportType::INTERNAL);
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_EQ(DISPLAY_UNIQUE_ID, mDevice->getAssociatedDisplayUniqueId());
 }
 
@@ -3423,7 +3426,7 @@
                                                     AINPUT_KEYBOARD_TYPE_ALPHABETIC);
     std::list<NotifyArgs> unused =
             device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                               /*changes=*/0);
+                               /*changes=*/{});
     unused += device2->reset(ARBITRARY_TIME);
 
     // Prepared displays and associated info.
@@ -3436,7 +3439,7 @@
 
     // No associated display viewport found, should disable the device.
     unused += device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_FALSE(device2->isEnabled());
 
     // Prepare second display.
@@ -3447,7 +3450,7 @@
                                  SECONDARY_UNIQUE_ID, hdmi2, ViewportType::EXTERNAL);
     // Default device will reconfigure above, need additional reconfiguration for another device.
     unused += device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // Device should be enabled after the associated display is found.
     ASSERT_TRUE(mDevice->isEnabled());
@@ -3535,7 +3538,7 @@
                                                     AINPUT_KEYBOARD_TYPE_ALPHABETIC);
     std::list<NotifyArgs> unused =
             device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                               /*changes=*/0);
+                               /*changes=*/{});
     unused += device2->reset(ARBITRARY_TIME);
 
     ASSERT_TRUE(mFakeEventHub->getLedState(SECOND_EVENTHUB_ID, LED_CAPSL));
@@ -3598,7 +3601,7 @@
                                                     AINPUT_KEYBOARD_TYPE_ALPHABETIC);
     std::list<NotifyArgs> unused =
             device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                               /*changes=*/0);
+                               /*changes=*/{});
     unused += device2->reset(ARBITRARY_TIME);
 
     // Initial metastate is AMETA_NONE.
@@ -3667,7 +3670,7 @@
 
     // Disable device, it should synthesize cancellation events for down events.
     mFakePolicy->addDisabledDevice(DEVICE_ID);
-    configureDevice(InputReaderConfiguration::CHANGE_ENABLED_STATE);
+    configureDevice(InputReaderConfiguration::Change::ENABLED_STATE);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     ASSERT_EQ(AKEY_EVENT_ACTION_UP, args.action);
@@ -3681,12 +3684,13 @@
                                             AINPUT_SOURCE_KEYBOARD,
                                             AINPUT_KEYBOARD_TYPE_ALPHABETIC);
     std::list<NotifyArgs> unused =
-            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
 
     mFakePolicy->addKeyboardLayoutAssociation(DEVICE_LOCATION, DEVICE_KEYBOARD_LAYOUT_INFO);
 
     unused += mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_KEYBOARD_LAYOUT_ASSOCIATION);
+                                 InputReaderConfiguration::Change::KEYBOARD_LAYOUT_ASSOCIATION);
 
     InputDeviceInfo deviceInfo = mDevice->getDeviceInfo();
     ASSERT_EQ(DEVICE_KEYBOARD_LAYOUT_INFO.languageTag,
@@ -3703,7 +3707,7 @@
     addMapperAndConfigure<KeyboardInputMapper>(AINPUT_SOURCE_KEYBOARD,
                                                AINPUT_KEYBOARD_TYPE_ALPHABETIC);
     InputReaderConfiguration config;
-    std::list<NotifyArgs> unused = mDevice->configure(ARBITRARY_TIME, config, 0);
+    std::list<NotifyArgs> unused = mDevice->configure(ARBITRARY_TIME, config, /*changes=*/{});
 
     ASSERT_EQ("en", mDevice->getDeviceInfo().getKeyboardLayoutInfo()->languageTag);
     ASSERT_EQ("extended", mDevice->getDeviceInfo().getKeyboardLayoutInfo()->layoutType);
@@ -4509,7 +4513,7 @@
     // and events are generated the usual way.
     const uint32_t generation = mReader->getContext()->getGeneration();
     mFakePolicy->setPointerCapture(false);
-    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    configureDevice(InputReaderConfiguration::Change::POINTER_CAPTURE);
     ASSERT_TRUE(mReader->getContext()->getGeneration() != generation);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
@@ -4558,7 +4562,7 @@
 
     // Enable Pointer Capture
     mFakePolicy->setPointerCapture(true);
-    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    configureDevice(InputReaderConfiguration::Change::POINTER_CAPTURE);
     NotifyPointerCaptureChangedArgs captureArgs;
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyCaptureWasCalled(&captureArgs));
     ASSERT_TRUE(captureArgs.request.enable);
@@ -4600,7 +4604,7 @@
 
     // Enable Pointer Capture.
     mFakePolicy->setPointerCapture(true);
-    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    configureDevice(InputReaderConfiguration::Change::POINTER_CAPTURE);
     NotifyPointerCaptureChangedArgs captureArgs;
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyCaptureWasCalled(&captureArgs));
     ASSERT_TRUE(captureArgs.request.enable);
@@ -4626,7 +4630,7 @@
     // The InputDevice is not associated with any display.
     prepareSecondaryDisplay();
     mFakePolicy->setDefaultPointerDisplayId(SECONDARY_DISPLAY_ID);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     mFakePointerController->setBounds(0, 0, DISPLAY_WIDTH - 1, DISPLAY_HEIGHT - 1);
     mFakePointerController->setPosition(100, 200);
@@ -4653,7 +4657,7 @@
     prepareSecondaryDisplay();
     mFakePolicy->setDefaultPointerDisplayId(SECONDARY_DISPLAY_ID);
     mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, SECONDARY_DISPLAY_UNIQUE_ID);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     mFakePointerController->setBounds(0, 0, DISPLAY_WIDTH - 1, DISPLAY_HEIGHT - 1);
     mFakePointerController->setPosition(100, 200);
@@ -4678,7 +4682,7 @@
     // Associate the InputDevice with the secondary display.
     prepareSecondaryDisplay();
     mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, SECONDARY_DISPLAY_UNIQUE_ID);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // The mapper should not generate any events because it is associated with a display that is
     // different from the pointer display.
@@ -5845,7 +5849,7 @@
     viewport->physicalRight = 30;
     viewport->physicalBottom = 610;
     mFakePolicy->updateViewport(*viewport);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // Start the touch.
     process(mapper, ARBITRARY_TIME, READ_TIME, EV_KEY, BTN_TOUCH, 1);
@@ -6570,7 +6574,7 @@
     auto viewport = mFakePolicy->getDisplayViewportByType(ViewportType::INTERNAL);
     viewport->isActive = false;
     mFakePolicy->updateViewport(*viewport);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // We should receive a cancel event for the ongoing gesture.
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
@@ -6595,7 +6599,7 @@
     // Make the viewport active again. The device should resume processing events.
     viewport->isActive = true;
     mFakePolicy->updateViewport(*viewport);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // The device is reset because it changes back to direct mode, without generating any events.
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled());
@@ -6763,7 +6767,7 @@
     // Send update to the mapper.
     std::list<NotifyArgs> unused2 =
             mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                               InputReaderConfiguration::CHANGE_DEVICE_TYPE /*changes*/);
+                               InputReaderConfiguration::Change::DEVICE_TYPE /*changes*/);
 
     // Check whether device type update was successful.
     ASSERT_EQ(AINPUT_SOURCE_TOUCH_NAVIGATION, mDevice->getSources());
@@ -6784,7 +6788,7 @@
     viewport->physicalRight = DISPLAY_WIDTH / 2;
     viewport->physicalBottom = DISPLAY_HEIGHT / 2;
     mFakePolicy->updateViewport(*viewport);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     SingleTouchInputMapper& mapper = addMapperAndConfigure<SingleTouchInputMapper>();
 
@@ -6873,7 +6877,7 @@
         v.uniqueId = UNIQUE_ID;
         v.type = ViewportType::INTERNAL;
         mFakePolicy->updateViewport(v);
-        configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+        configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
     }
 
     void assertReceivedMove(const Point& point) {
@@ -7233,7 +7237,7 @@
         mStylusState.pressure = 0.f;
         mStylusState.toolType = ToolType::STYLUS;
         mReader->getContext()->setExternalStylusDevices({mExternalStylusDeviceInfo});
-        configureDevice(InputReaderConfiguration::CHANGE_EXTERNAL_STYLUS_PRESENCE);
+        configureDevice(InputReaderConfiguration::Change::EXTERNAL_STYLUS_PRESENCE);
         processExternalStylusState(mapper);
         return mapper;
     }
@@ -9289,7 +9293,7 @@
     // Don't set touch.enableForInactiveViewport to verify the default behavior.
     mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT, ui::ROTATION_0,
                                     /*isActive=*/false, UNIQUE_ID, NO_PORT, ViewportType::INTERNAL);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
     prepareAxes(POSITION);
     MultiTouchInputMapper& mapper = addMapperAndConfigure<MultiTouchInputMapper>();
 
@@ -9309,7 +9313,7 @@
     addConfigurationProperty("touch.enableForInactiveViewport", "1");
     mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT, ui::ROTATION_0,
                                     /*isActive=*/false, UNIQUE_ID, NO_PORT, ViewportType::INTERNAL);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
     prepareAxes(POSITION);
     MultiTouchInputMapper& mapper = addMapperAndConfigure<MultiTouchInputMapper>();
 
@@ -9331,7 +9335,7 @@
     ASSERT_TRUE(optionalDisplayViewport.has_value());
     DisplayViewport displayViewport = *optionalDisplayViewport;
 
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
     prepareAxes(POSITION);
     MultiTouchInputMapper& mapper = addMapperAndConfigure<MultiTouchInputMapper>();
 
@@ -9347,7 +9351,7 @@
     // Deactivate display viewport
     displayViewport.isActive = false;
     ASSERT_TRUE(mFakePolicy->updateViewport(displayViewport));
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // The ongoing touch should be canceled immediately
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
@@ -9362,7 +9366,7 @@
     // Reactivate display viewport
     displayViewport.isActive = true;
     ASSERT_TRUE(mFakePolicy->updateViewport(displayViewport));
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
 
     // Finger move again starts new gesture
     x += 10, y += 10;
@@ -9405,7 +9409,7 @@
                                                       mFakePolicy->getReaderConfiguration());
     std::list<NotifyArgs> unused =
             device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                               /*changes=*/0);
+                               /*changes=*/{});
     unused += device2->reset(ARBITRARY_TIME);
 
     // Setup PointerController.
@@ -9426,8 +9430,8 @@
 
     // Default device will reconfigure above, need additional reconfiguration for another device.
     unused += device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_DISPLAY_INFO |
-                                         InputReaderConfiguration::CHANGE_SHOW_TOUCHES);
+                                 InputReaderConfiguration::Change::DISPLAY_INFO |
+                                         InputReaderConfiguration::Change::SHOW_TOUCHES);
 
     // Two fingers down at default display.
     int32_t x1 = 100, y1 = 125, x2 = 300, y2 = 500;
@@ -9458,7 +9462,7 @@
     // Disable the show touches configuration and ensure the spots are cleared.
     mFakePolicy->setShowTouches(false);
     unused += device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                                 InputReaderConfiguration::CHANGE_SHOW_TOUCHES);
+                                 InputReaderConfiguration::Change::SHOW_TOUCHES);
 
     ASSERT_TRUE(fakePointerController->getSpots().empty());
 }
@@ -10368,7 +10372,7 @@
 
     // non captured touchpad should be a mouse source
     mFakePolicy->setPointerCapture(false);
-    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    configureDevice(InputReaderConfiguration::Change::POINTER_CAPTURE);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
     ASSERT_EQ(AINPUT_SOURCE_MOUSE, mapper.getSources());
 }
@@ -10453,7 +10457,7 @@
 
     // captured touchpad should be a touchpad device
     mFakePolicy->setPointerCapture(true);
-    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    configureDevice(InputReaderConfiguration::Change::POINTER_CAPTURE);
     ASSERT_EQ(AINPUT_SOURCE_TOUCHPAD, mapper.getSources());
 }
 
@@ -10839,7 +10843,7 @@
     auto viewport = mFakePolicy->getDisplayViewportByType(ViewportType::INTERNAL);
     viewport->isActive = false;
     mFakePolicy->updateViewport(*viewport);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    configureDevice(InputReaderConfiguration::Change::DISPLAY_INFO);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(
             AllOf(WithMotionAction(AMOTION_EVENT_ACTION_CANCEL),
                   WithSource(AINPUT_SOURCE_MOUSE | AINPUT_SOURCE_STYLUS),
@@ -10947,14 +10951,6 @@
         mFakePolicy.clear();
     }
 
-    std::list<NotifyArgs> configureDevice(uint32_t changes) {
-        if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
-            mReader->requestRefreshConfiguration(changes);
-            mReader->loopOnce();
-        }
-        return mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), changes);
-    }
-
     std::shared_ptr<InputDevice> newDevice(int32_t deviceId, const std::string& name,
                                            const std::string& location, int32_t eventHubId,
                                            ftl::Flags<InputDeviceClass> classes) {
diff --git a/services/inputflinger/tests/fuzzers/CursorInputFuzzer.cpp b/services/inputflinger/tests/fuzzers/CursorInputFuzzer.cpp
index 8ed1f31..8098ef2 100644
--- a/services/inputflinger/tests/fuzzers/CursorInputFuzzer.cpp
+++ b/services/inputflinger/tests/fuzzers/CursorInputFuzzer.cpp
@@ -53,12 +53,14 @@
                 [&]() -> void {
                     std::list<NotifyArgs> unused =
                             mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
-                                               fdp->ConsumeIntegral<int32_t>());
+                                               InputReaderConfiguration::Change(
+                                                       fdp->ConsumeIntegral<int32_t>()));
                 },
                 [&]() -> void {
                     // Need to reconfigure with 0 or you risk a NPE.
                     std::list<NotifyArgs> unused =
-                            mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig, 0);
+                            mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
+                                               InputReaderConfiguration::Change(0));
                     InputDeviceInfo info;
                     mapper.populateDeviceInfo(info);
                 },
@@ -71,7 +73,8 @@
 
                     // Need to reconfigure with 0 or you risk a NPE.
                     std::list<NotifyArgs> unused =
-                            mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig, 0);
+                            mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
+                                               InputReaderConfiguration::Change(0));
                     RawEvent rawEvent{fdp->ConsumeIntegral<nsecs_t>(),
                                       fdp->ConsumeIntegral<nsecs_t>(),
                                       fdp->ConsumeIntegral<int32_t>(),
@@ -90,7 +93,8 @@
                 [&]() -> void {
                     // Need to reconfigure with 0 or you risk a NPE.
                     std::list<NotifyArgs> unused =
-                            mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig, 0);
+                            mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
+                                               InputReaderConfiguration::Change(0));
                     mapper.getAssociatedDisplayId();
                 },
         })();
diff --git a/services/inputflinger/tests/fuzzers/FuzzContainer.h b/services/inputflinger/tests/fuzzers/FuzzContainer.h
index d42d11c..84ac0fd 100644
--- a/services/inputflinger/tests/fuzzers/FuzzContainer.h
+++ b/services/inputflinger/tests/fuzzers/FuzzContainer.h
@@ -59,7 +59,7 @@
     void configureDevice() {
         nsecs_t arbitraryTime = mFdp->ConsumeIntegral<nsecs_t>();
         std::list<NotifyArgs> out;
-        out += mFuzzDevice->configure(arbitraryTime, mPolicyConfig, 0);
+        out += mFuzzDevice->configure(arbitraryTime, mPolicyConfig, /*changes=*/{});
         out += mFuzzDevice->reset(arbitraryTime);
         for (const NotifyArgs& args : out) {
             mFuzzListener.notify(args);
diff --git a/services/inputflinger/tests/fuzzers/InputReaderFuzzer.cpp b/services/inputflinger/tests/fuzzers/InputReaderFuzzer.cpp
index baece3c..9223287 100644
--- a/services/inputflinger/tests/fuzzers/InputReaderFuzzer.cpp
+++ b/services/inputflinger/tests/fuzzers/InputReaderFuzzer.cpp
@@ -82,7 +82,7 @@
         return reader->hasKeys(deviceId, sourceMask, keyCodes, outFlags);
     }
 
-    void requestRefreshConfiguration(uint32_t changes) {
+    void requestRefreshConfiguration(ConfigurationChanges changes) {
         reader->requestRefreshConfiguration(changes);
     }
 
@@ -232,7 +232,8 @@
                                     fdp->ConsumeIntegral<uint32_t>(), keyCodes, outFlags.data());
                 },
                 [&]() -> void {
-                    reader->requestRefreshConfiguration(fdp->ConsumeIntegral<uint32_t>());
+                    reader->requestRefreshConfiguration(
+                            InputReaderConfiguration::Change(fdp->ConsumeIntegral<uint32_t>()));
                 },
                 [&]() -> void {
                     reader->cancelVibrate(fdp->ConsumeIntegral<int32_t>(),
diff --git a/services/inputflinger/tests/fuzzers/KeyboardInputFuzzer.cpp b/services/inputflinger/tests/fuzzers/KeyboardInputFuzzer.cpp
index 0a6327d..616e870 100644
--- a/services/inputflinger/tests/fuzzers/KeyboardInputFuzzer.cpp
+++ b/services/inputflinger/tests/fuzzers/KeyboardInputFuzzer.cpp
@@ -65,7 +65,8 @@
                 [&]() -> void {
                     std::list<NotifyArgs> unused =
                             mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
-                                               fdp->ConsumeIntegral<uint32_t>());
+                                               InputReaderConfiguration::Change(
+                                                       fdp->ConsumeIntegral<uint32_t>()));
                 },
                 [&]() -> void {
                     std::list<NotifyArgs> unused = mapper.reset(fdp->ConsumeIntegral<nsecs_t>());
diff --git a/services/inputflinger/tests/fuzzers/MultiTouchInputFuzzer.cpp b/services/inputflinger/tests/fuzzers/MultiTouchInputFuzzer.cpp
index fdf9f41..212462d 100644
--- a/services/inputflinger/tests/fuzzers/MultiTouchInputFuzzer.cpp
+++ b/services/inputflinger/tests/fuzzers/MultiTouchInputFuzzer.cpp
@@ -80,7 +80,8 @@
                 [&]() -> void {
                     std::list<NotifyArgs> unused =
                             mapper.reconfigure(fdp->ConsumeIntegral<nsecs_t>(), policyConfig,
-                                               fdp->ConsumeIntegral<uint32_t>());
+                                               InputReaderConfiguration::Change(
+                                                       fdp->ConsumeIntegral<uint32_t>()));
                 },
                 [&]() -> void {
                     std::list<NotifyArgs> unused = mapper.reset(fdp->ConsumeIntegral<nsecs_t>());