SEL_FETCH_CUR_CTL
intel_de_write_dsb(display, dsb, SEL_FETCH_CUR_CTL(pipe), 0);
intel_de_write_dsb(display, dsb, SEL_FETCH_CUR_CTL(pipe), ctl);
intel_de_write_dsb(display, dsb, SEL_FETCH_CUR_CTL(pipe), plane_state->ctl);