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  • Laurent Pinchart's avatar
    drm/rcar-du: Introduce CRTCs groups · cb2025d2
    Laurent Pinchart authored
    
    
    The R8A7779 DU is split in per-CRTC resources (scan-out engine, blending
    unit, timings generator, ...) and device-global resources (start/stop
    control, planes, ...) shared between the two CRTCs.
    
    The R8A7790 introduced a third CRTC with its own set of global resources
    This would be modeled as two separate DU device instances if it wasn't
    for a handful or resources that are shared between the three CRTCs
    (mostly related to input and output routing). For this reason the
    R8A7790 DU must be modeled as a single device with three CRTCs, two sets
    of "semi-global" resources, and a few device-global resources.
    
    Introduce a new rcar_du_group driver-specific object, without any real
    counterpart in the DU documentation, that models those semi-global
    resources.
    
    Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
    cb2025d2