• Rob Clark's avatar
    drm: convert crtc and connection_mutex to ww_mutex (v5) · 51fd371b
    Rob Clark authored
    For atomic, it will be quite necessary to not need to care so much
    about locking order.  And 'state' gives us a convenient place to stash a
    ww_ctx for any sort of update that needs to grab multiple crtc locks.
    
    Because we will want to eventually make locking even more fine grained
    (giving locks to planes, connectors, etc), split out drm_modeset_lock
    and drm_modeset_acquire_ctx to track acquired locks.
    
    Atomic will use this to keep track of which locks have been acquired
    in a transaction.
    
    v1: original
    v2: remove a few things not needed until atomic, for now
    v3: update for v3 of connection_mutex patch..
    v4: squash in docbook
    v5: doc tweaks/fixes
    Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
    Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    51fd371b
drmP.h 54.3 KB