drm: rcar-du: lvds: Add support for dual-link mode

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In dual-link mode the LVDS0 encoder transmits even-numbered pixels, and
sends odd-numbered pixels to the LVDS1 encoder for transmission on a
separate link.

To implement support for this mode of operation, determine if the LVDS
connection operates in dual-link mode by querying the next device in the
pipeline, locate the companion encoder, and control it directly through
its bridge operations.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

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Laurent Pinchart 2019-03-04 21:34:46 +02:00

parent 968328496b

commit fa440d8703

2 changed files with 99 additions and 13 deletions

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107

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

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5

drivers/gpu/drm/rcar-du/rcar_lvds.h

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