_SKL_PLANE
(_SKL_PLANE((pipe), (plane), (reg_1_a), (reg_1_b), (reg_2_a), (reg_2_b)) + (dw) * 4)
_MMIO(_SKL_PLANE((pipe), (plane), (reg_1_a), (reg_1_b), (reg_2_a), (reg_2_b)))