#define _PLANE_KEYVAL_2_A                      0x70294
 #define _PLANE_KEYMSK_1_A                      0x70198
 #define _PLANE_KEYMSK_2_A                      0x70298
-#define  PLANE_KEYMSK_ALPHA_ENABLE             (1 << 31)
+#define   PLANE_KEYMSK_ALPHA_ENABLE            REG_BIT(31)
 #define _PLANE_KEYMAX_1_A                      0x701a0
 #define _PLANE_KEYMAX_2_A                      0x702a0
-#define  PLANE_KEYMAX_ALPHA(a)                 ((a) << 24)
+#define   PLANE_KEYMAX_ALPHA_MASK              REG_GENMASK(31, 24)
+#define   PLANE_KEYMAX_ALPHA(a)                        REG_FIELD_PREP(PLANE_KEYMAX_ALPHA_MASK, (a))
 #define _PLANE_SURFLIVE_1_A                    0x701ac
 #define _PLANE_SURFLIVE_2_A                    0x702ac
 #define _PLANE_CC_VAL_1_A                      0x701b4