STI_PLANE_TYPE_SHIFT
#define STI_PLANE_TYPE_MASK (~((1 << STI_PLANE_TYPE_SHIFT) - 1))
STI_GDP = 1 << STI_PLANE_TYPE_SHIFT,
STI_VDP = 2 << STI_PLANE_TYPE_SHIFT,
STI_CUR = 3 << STI_PLANE_TYPE_SHIFT,
STI_BCK = 4 << STI_PLANE_TYPE_SHIFT