>We need to take care of the vop status when useSince Rockchip is atomic, shouldn't this be using atomic_check hooks and
>rockchip_drm_crtc_mode_config, if vop is disabled,
>the function would failed, that is terrible.
>
>Save connector type and output mode on drm_display_mode->private_flags
>at encoder mode_fixup, then we can configure the type and mode safely
>on crtc mode_set.
a subclassed crtc_state structure?