Op 13-07-15 om 13:50 schreef John Hunter:
From: Zhao Junwang zhjwpku@gmail.com
This is the equivalent helper to drm_plane_helper_check_update for legacy drivers, but using atomic state to check things.
Motivated by the atomic conversion of the bochs driver.
v2: according to Daniel's comment -polish the kerneldoc comment to match the signatures -crtc->mode is legacy state, we need to look at crtc_state instead
according to Maarten's comment -there is no need for can_update_disabled in the atomic world, so, we can delete that parameterv3: according to Daniel's comment -this function call can't fail, add a WARN_ON -use drm_atomic_get_existing_crtc_state
according to Maarten's comment -kill off the plane parameter and rename state to plane_state -do not handling NULL, i.e. no need to check plane_state in atomic.Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Daniel Vetter daniel.vetter@ffwll.ch Signed-off-by: Zhao Junwang zhjwpku@gmail.com
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com