diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index ba3d980..d14b0f0 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -437,6 +437,10 @@
     mParameters.supportsUsi = false;
     getDeviceContext().getConfiguration().tryGetProperty("touch.supportsUsi",
                                                          mParameters.supportsUsi);
+
+    mParameters.enableForInactiveViewport = false;
+    getDeviceContext().getConfiguration().tryGetProperty("touch.enableForInactiveViewport",
+                                                         mParameters.enableForInactiveViewport);
 }
 
 void TouchInputMapper::dumpParameters(std::string& dump) {
@@ -454,6 +458,8 @@
     dump += StringPrintf(INDENT4 "OrientationAware: %s\n", toString(mParameters.orientationAware));
     dump += INDENT4 "Orientation: " + ftl::enum_string(mParameters.orientation) + "\n";
     dump += StringPrintf(INDENT4 "SupportsUsi: %s\n", toString(mParameters.supportsUsi));
+    dump += StringPrintf(INDENT4 "EnableForInactiveViewport: %s\n",
+                         toString(mParameters.enableForInactiveViewport));
 }
 
 void TouchInputMapper::configureRawPointerAxes() {
@@ -856,7 +862,7 @@
               "becomes available.",
               getDeviceName().c_str());
         mDeviceMode = DeviceMode::DISABLED;
-    } else if (!newViewportOpt->isActive) {
+    } else if (!mParameters.enableForInactiveViewport && !newViewportOpt->isActive) {
         ALOGI("Disabling %s (device %i) because the associated viewport is not active",
               getDeviceName().c_str(), getDeviceId());
         mDeviceMode = DeviceMode::DISABLED;
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.h b/services/inputflinger/reader/mapper/TouchInputMapper.h
index 2bb9ece..bab15cc 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.h
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.h
@@ -236,6 +236,9 @@
 
         // Whether the device supports the Universal Stylus Initiative (USI) protocol for styluses.
         bool supportsUsi;
+
+        // Allows touches while the display is off.
+        bool enableForInactiveViewport;
     } mParameters;
 
     // Immutable calibration parameters in parsed form.
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 0c2742f..39f521b 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -9082,6 +9082,7 @@
  */
 TEST_F(MultiTouchInputMapperTest, WhenViewportIsNotActive_TouchesAreDropped) {
     addConfigurationProperty("touch.deviceType", "touchScreen");
+    // Don't set touch.enableForInactiveViewport to verify the default behavior.
     mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
                                     DISPLAY_ORIENTATION_0, false /*isActive*/, UNIQUE_ID, NO_PORT,
                                     ViewportType::INTERNAL);
@@ -9096,8 +9097,31 @@
     mFakeListener->assertNotifyMotionWasNotCalled();
 }
 
+/**
+ * When the viewport is not active (isActive=false) and touch.enableForInactiveViewport is true,
+ * the touch mapper can process the events and the events can be delivered to the listener.
+ */
+TEST_F(MultiTouchInputMapperTest, WhenViewportIsNotActive_TouchesAreProcessed) {
+    addConfigurationProperty("touch.deviceType", "touchScreen");
+    addConfigurationProperty("touch.enableForInactiveViewport", "1");
+    mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+                                    DISPLAY_ORIENTATION_0, false /*isActive*/, UNIQUE_ID, NO_PORT,
+                                    ViewportType::INTERNAL);
+    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    prepareAxes(POSITION);
+    MultiTouchInputMapper& mapper = addMapperAndConfigure<MultiTouchInputMapper>();
+
+    NotifyMotionArgs motionArgs;
+    processPosition(mapper, 100, 100);
+    processSync(mapper);
+
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
+    EXPECT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
+}
+
 TEST_F(MultiTouchInputMapperTest, Process_DeactivateViewport_AbortTouches) {
     addConfigurationProperty("touch.deviceType", "touchScreen");
+    addConfigurationProperty("touch.enableForInactiveViewport", "0");
     mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
                                     DISPLAY_ORIENTATION_0, true /*isActive*/, UNIQUE_ID, NO_PORT,
                                     ViewportType::INTERNAL);