drm: rcar-du: Don't write unimplemented ESCR and OTAR registers on Gen3

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The ESCR and OTAR registers are not present in all DU channels on Gen3
SoCs. ESCR only exists in channels that can be routed to an LVDS or
DPAD, and OTAR in channels that can be routed to a DPAD. Skip writing
those registers for other channels. This replaces the DU gen check, as
Gen4 doesn't have LVDS or DPAD outputs.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

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Laurent Pinchart 2023-02-22 05:49:39 +02:00

parent ec1c6ff81e

commit fb97147ad2

1 changed files with 15 additions and 2 deletions

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drivers/gpu/drm/rcar-du/rcar_du_crtc.c

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