drm: rcar-du: Register a completion callback with VSP1
Currently we process page flip events on every display interrupt,
however this does not take into consideration the processing time needed
by the VSP1 utilised in the pipeline.
Register a callback with the VSP driver to obtain completion events, and
track them so that we only perform page flips when the full display
pipeline has completed for the frame.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
v2:
- Utilise drm_crtc_vblank_count() as a frame identifier instead of the
user space flip event.
- Commit message completely re-worded for patch re-work.
- drm_crtc_handle_vblank() re-instated in event of rcrtc->pending
3 files changed
