diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
index 97d803df04a1..4394ad1ff154 100644
--- a/drivers/staging/sm750fb/ddk750_mode.c
+++ b/drivers/staging/sm750fb/ddk750_mode.c
@@ -141,8 +141,11 @@ static int programModeRegisters(mode_parameter_t *pModeParam, pll_value_t *pll)
 		POKE32(PANEL_HORIZONTAL_TOTAL, reg);
 
 		POKE32(PANEL_HORIZONTAL_SYNC,
-		FIELD_VALUE(0, PANEL_HORIZONTAL_SYNC, WIDTH, pModeParam->horizontal_sync_width)
-		| FIELD_VALUE(0, PANEL_HORIZONTAL_SYNC, START, pModeParam->horizontal_sync_start - 1));
+			((pModeParam->horizontal_sync_width <<
+				PANEL_HORIZONTAL_SYNC_WIDTH_SHIFT) &
+				PANEL_HORIZONTAL_SYNC_WIDTH_MASK) |
+			((pModeParam->horizontal_sync_start - 1) &
+				PANEL_HORIZONTAL_SYNC_START_MASK));
 
 		POKE32(PANEL_VERTICAL_TOTAL,
 		FIELD_VALUE(0, PANEL_VERTICAL_TOTAL, TOTAL, pModeParam->vertical_total - 1)
diff --git a/drivers/staging/sm750fb/ddk750_reg.h b/drivers/staging/sm750fb/ddk750_reg.h
index e0b39389331c..fd28eb0be68a 100644
--- a/drivers/staging/sm750fb/ddk750_reg.h
+++ b/drivers/staging/sm750fb/ddk750_reg.h
@@ -863,8 +863,9 @@
 #define PANEL_HORIZONTAL_TOTAL_DISPLAY_END_MASK       0xfff
 
 #define PANEL_HORIZONTAL_SYNC                         0x080028
-#define PANEL_HORIZONTAL_SYNC_WIDTH                   23:16
-#define PANEL_HORIZONTAL_SYNC_START                   11:0
+#define PANEL_HORIZONTAL_SYNC_WIDTH_SHIFT             16
+#define PANEL_HORIZONTAL_SYNC_WIDTH_MASK              (0xff << 16)
+#define PANEL_HORIZONTAL_SYNC_START_MASK              0xfff
 
 #define PANEL_VERTICAL_TOTAL                          0x08002C
 #define PANEL_VERTICAL_TOTAL_TOTAL                    26:16