diff --git a/prebuilt/htcleo-touchscreen.idc b/prebuilt/htcleo-touchscreen.idc
index b05822e..274781f 100644
--- a/prebuilt/htcleo-touchscreen.idc
+++ b/prebuilt/htcleo-touchscreen.idc
@@ -26,6 +26,26 @@ touch.size.scale = 10
 touch.size.bias = 160
 touch.size.isSummed = 1
 
+# Touch Size
+touch.touchSize.calibration = pressure
+
+# Tool Size
+# Driver reports tool size as a linear width measurement summed over
+# all contact points.
+#
+# Raw width field measures approx. 1 unit per millimeter
+# of tool size on the surface where a raw width of 1 corresponds
+# to about 17mm of physical size.  Given that the display resolution
+# is 10px per mm we obtain a scale factor of 10 pixels / unit and
+# a bias of 160 pixels.  In addition, the raw width represents a
+# sum of all contact area so we note this fact in the calibration.
+touch.toolSize.calibration = linear
+touch.toolSize.linearScale = 10
+touch.toolSize.linearBias = 160
+touch.toolSize.isSummed = 1
+
+touch.filterTouchEvents = 1
+
 # Pressure
 # Driver reports signal strength as pressure.
 #
@@ -38,8 +58,8 @@ touch.size.isSummed = 1
 # a featherlight touch will be below 1.0 and a heavy or large touch
 # will be above 1.0.  We don't expect these values to be accurate.
 touch.pressure.calibration = amplitude
+touch.pressure.source = default
 touch.pressure.scale = 0.01
 
 # Orientation
-touch.orientation.calibration = none
-
+touch.orientation.calibration = none
\ No newline at end of file