• Rob Clark's avatar
    drm: Atomic modeset ioctl · d34f20d6
    Rob Clark authored
    The atomic modeset ioctl can be used to push any number of new values
    for object properties. The driver can then check the full device
    configuration as single unit, and try to apply the changes atomically.
    
    The ioctl simply takes a list of object IDs and property IDs and their
    values.
    
    Originally based on a patch from Ville Syrjälä, although it has mutated
    (mutilated?) enough since then that you probably shouldn't blame it on
    him ;-)
    
    The atomic support is hidden behind the DRM_CLIENT_CAP_ATOMIC cap (to
    protect legacy userspace) and drm.atomic module param (for now).
    
    v2: Check for file_priv->atomic to make sure we only allow userspace
    in-the-know to use atomic.
    Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
    Reviewed-by: default avatarSean Paul <seanpaul@chromium.org>
    Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    d34f20d6
drm.h 26.6 KB