diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index cfc2919..8091036 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -3669,6 +3669,9 @@
     const float xScaled = float(x - mRawPointerAxes.x.minValue) * mXScale;
     const float yScaled = float(y - mRawPointerAxes.y.minValue) * mYScale;
 
+    const float xScaledMax = float(mRawPointerAxes.x.maxValue - x) * mXScale;
+    const float yScaledMax = float(mRawPointerAxes.y.maxValue - y) * mYScale;
+
     // Rotate to surface coordinate.
     // 0 - no swap and reverse.
     // 90 - swap x/y and reverse y.
@@ -3680,16 +3683,16 @@
             y = yScaled + mYTranslate;
             break;
         case DISPLAY_ORIENTATION_90:
-            y = mSurfaceRight - xScaled;
+            y = xScaledMax - (mRawSurfaceWidth - mSurfaceRight);
             x = yScaled + mYTranslate;
             break;
         case DISPLAY_ORIENTATION_180:
-            x = mSurfaceRight - xScaled;
-            y = mSurfaceBottom - yScaled;
+            x = xScaledMax - (mRawSurfaceWidth - mSurfaceRight);
+            y = yScaledMax - (mRawSurfaceHeight - mSurfaceBottom);
             break;
         case DISPLAY_ORIENTATION_270:
             y = xScaled + mXTranslate;
-            x = mSurfaceBottom - yScaled;
+            x = yScaledMax - (mRawSurfaceHeight - mSurfaceBottom);
             break;
         default:
             assert(false);
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 58f83b5..e9bb169 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -7449,8 +7449,8 @@
         configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     }
 
-    void processPositionAndVerify(MultiTouchInputMapper& mapper, int32_t xInside, int32_t yInside,
-                                  int32_t xOutside, int32_t yOutside, int32_t xExpected,
+    void processPositionAndVerify(MultiTouchInputMapper& mapper, int32_t xOutside, int32_t yOutside,
+                                  int32_t xInside, int32_t yInside, int32_t xExpected,
                                   int32_t yExpected) {
         // touch on outside area should not work.
         processPosition(mapper, toRawX(xOutside), toRawY(yOutside));
@@ -7532,6 +7532,34 @@
     processPositionAndVerify(mapper, x - 1, y, x + 1, y, xExpected, yExpected);
 }
 
+TEST_F(MultiTouchInputMapperTest_SurfaceRange, Viewports_SurfaceRange_Corner) {
+    addConfigurationProperty("touch.deviceType", "touchScreen");
+    prepareDisplay(DISPLAY_ORIENTATION_0);
+    prepareAxes(POSITION);
+    MultiTouchInputMapper& mapper = addMapperAndConfigure<MultiTouchInputMapper>();
+
+    const int32_t x = 0;
+    const int32_t y = 0;
+
+    const int32_t xExpected = x;
+    const int32_t yExpected = y;
+    processPositionAndVerify(mapper, x - 1, y, x, y, xExpected, yExpected);
+
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_90);
+    // expect x/y = swap x/y then reverse y.
+    const int32_t xExpected90 = y;
+    const int32_t yExpected90 = DISPLAY_WIDTH - 1;
+    processPositionAndVerify(mapper, x - 1, y, x, y, xExpected90, yExpected90);
+
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_270);
+    // expect x/y = swap x/y then reverse x.
+    const int32_t xExpected270 = DISPLAY_HEIGHT - 1;
+    const int32_t yExpected270 = x;
+    processPositionAndVerify(mapper, x - 1, y, x, y, xExpected270, yExpected270);
+}
+
 TEST_F(MultiTouchInputMapperTest, Process_TouchpadCapture) {
     // we need a pointer controller for mouse mode of touchpad (start pointer at 0,0)
     std::shared_ptr<FakePointerController> fakePointerController =