• Rob Clark's avatar
    drm/msm: basic KMS driver for snapdragon · c8afe684
    Rob Clark authored
    The snapdragon chips have multiple different display controllers,
    depending on which chip variant/version.  (As far as I can tell, current
    devices have either MDP3 or MDP4, and upcoming devices have MDSS.)  And
    then external to the display controller are HDMI, DSI, etc. blocks which
    may be shared across devices which have different display controller
    blocks.
    
    To more easily add support for different display controller blocks, the
    display controller specific bits are split out into a "kms" module,
    which provides the kms plane/crtc/encoder objects.
    
    The external HDMI, DSI, etc. blocks are part encoder, and part connector
    currently.  But I think I will pull in the drm_bridge patches from
    chromeos tree, and split them into a bridge+connector, with the
    registers that need to be set in modeset handled by the bridge.  This
    would remove the 'msm_connector' base class.  But some things need to be
    double checked to make sure I could get the correct ON/OFF sequencing..
    
    This patch adds support for mdp4 crtc (including hw cursor), dtv encoder
    (part of MDP4 block), and hdmi.
    Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
    c8afe684
mdp4_kms.h 5.76 KB