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The infrastruture for atomic modesetting allows us to use the generic code for dirty-FB and damage handling. Switch over udl and remove the driver's implementation. The simple-pipe's update function now picks up the primary plane's damage and updates a minimal region of the screen. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191210084905.5570-7-tzimmermann@suse.de