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drm: rcar-du: Don't restart group when enabling plane on Gen3
authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Mon, 21 Feb 2022 16:54:41 +0000 (18:54 +0200)
committerLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Thu, 3 Mar 2022 12:06:04 +0000 (14:06 +0200)
commit8ba3c7bd4dca7ac358e834eabf840012d9564356
tree63b3920a3c729bc1bc063b750fba1e9a724f8b57
parentaaaf9361f0348dd13131e392190b3793e135f7e3
drm: rcar-du: Don't restart group when enabling plane on Gen3

On Gen3 hardware enabling a VSP plane doesn't change any register that
requires DRES to take effect. Avoid a group restart in that case.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
drivers/gpu/drm/rcar-du/rcar_du_plane.c
drivers/gpu/drm/rcar-du/rcar_du_vsp.c