1 files changed, 14 insertions, 0 deletions
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index baff5ba..8946c41 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -392,6 +392,20 @@ status_t DisplayDevice::orientationToTransfrom(
         int orientation, int w, int h, Transform* tr)
 {
     uint32_t flags = 0;
+    char value[PROPERTY_VALUE_MAX];
+    property_get("ro.sf.hwrotation", value, "0");
+    int additionalRot = atoi(value);
+
+    if (additionalRot) {
+        additionalRot /= 90;
+        if (orientation == DisplayState::eOrientationUnchanged) {
+            orientation = additionalRot;
+        } else {
+            orientation += additionalRot;
+            orientation %= 4;
+        }
+    }
+
     switch (orientation) {
     case DisplayState::eOrientationDefault:
         flags = Transform::ROT_0;