Rotate a SurfaceView in xml layout

How can I rotate a custom SurfaceView in a layout file by 180 degrees?

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
   android:orientation="vertical" 
   android:layout_width="match_parent"
   android:layout_height="match_parent">
      <package.CustomSurfaceView
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:rotation="180"
      />
</LinearLayout>

Needless to say the above code doesn't work.