diff --git a/hwc/tulip/hwc.cpp b/hwc/tulip/hwc.cpp
index 4b2e704..243bec5 100755
--- a/hwc/tulip/hwc.cpp
+++ b/hwc/tulip/hwc.cpp
@@ -17,6 +17,7 @@
 
 #include "hwc.h"
 #include "cutils/properties.h"
+#include <utils/misc.h>
 
 
 static int Framecount = 0;
@@ -265,11 +266,44 @@ static int hwc_getDisplayAttributes(struct hwc_composer_device_1 *dev,
 static int hwc_device_close(struct hw_device_t *dev)
 {
     HWC_UNREFERENCED_PARAMETER(dev);
-    
+
     hwc_destroy_device();
     return 0;
 }
 
+#define TYPE_BUILT_IN 1
+#define TYPE_HDMI 2
+
+static void hwc_sysprop_changed()
+{
+    int disp = 0;
+
+    ALOGI("hwc_sysprop_changed");
+
+    _hwc_device_set_3d_mode(TYPE_BUILT_IN,
+      (__display_3d_mode)
+      property_get_int32("persist.sys.disp.3d_mode", 0));
+
+    _hwc_device_set_backlight(TYPE_BUILT_IN,
+      property_get_int32("persist.sys.disp.backlight", 0), 0);
+
+    _hwc_device_set_backlight(TYPE_BUILT_IN,
+      property_get_int32("persist.sys.disp.backlight_demo", 0), 1);
+
+    _hwc_device_set_enhancemode(TYPE_BUILT_IN,
+      property_get_int32("persist.sys.disp.enhancemode", 0), 0);
+
+    _hwc_device_set_enhancemode(TYPE_BUILT_IN,
+      property_get_int32("persist.sys.disp.enhancemode_demo", 0), 1);
+
+    _hwc_device_set_output_mode(TYPE_HDMI, DISP_OUTPUT_TYPE_HDMI,
+      property_get_int32("persist.sys.hdmi.output_mode", DISP_TV_MOD_1080P_60HZ));
+
+    _hwc_set_persent(TYPE_HDMI,
+      property_get_int32("persist.sys.hdmi.percent_x", 0),
+      property_get_int32("persist.sys.hdmi.percent_y", 0));
+}
+
 /*****************************************************************************/
 
 static int hwc_device_open(const struct hw_module_t* module, const char* name,
@@ -321,7 +355,8 @@ static int hwc_device_open(const struct hw_module_t* module, const char* name,
 
 	hwc_create_device();
 
+  android::add_sysprop_change_callback(hwc_sysprop_changed, 1000);
+  hwc_sysprop_changed();
+
     return err;
 }
-
-