android4.2 lcd 旋转180度

--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -358,6 +358,20 @@ 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;
+        }
+    }

+

--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -683,10 +683,21 @@ status_t SurfaceFlinger::getDisplayInfo(const sp& display, DisplayInfo*
         info->orientation = 0;
     }
 
-    info->w = hwc.getWidth(type);
-    info->h = hwc.getHeight(type);
-    info->xdpi = xdpi;
-    info->ydpi = ydpi;
+    char value[PROPERTY_VALUE_MAX];
+    property_get("ro.sf.hwrotation", value, "0");
+    int additionalRot = atoi(value) / 90;
+    if ((type == DisplayDevice::DISPLAY_PRIMARY) && (additionalRot & DisplayState::eOrientationSwapMask)) {
+        info->h = hwc.getWidth(type);
+        info->w = hwc.getHeight(type);
+        info->xdpi = ydpi;
+        info->ydpi = xdpi;
+    }
+    else {
+        info->w = hwc.getWidth(type);
+        info->h = hwc.getHeight(type);
+        info->xdpi = xdpi;
+        info->ydpi = ydpi;
+    }

init.rc  : setprop ro.sf.hwrotation 180