PIPE_CSC_POSTOFF_LO
intel_de_write_dsb(display, dsb, PIPE_CSC_POSTOFF_LO(pipe),
csc->postoff[2] = intel_de_read_fw(display, PIPE_CSC_POSTOFF_LO(pipe));
MMIO_D(PIPE_CSC_POSTOFF_LO(PIPE_A));
MMIO_D(PIPE_CSC_POSTOFF_LO(PIPE_B));
MMIO_D(PIPE_CSC_POSTOFF_LO(PIPE_C));