[PATCH 4.19.y-cip 02/17] drm: bridge: Add dual_link field to the drm_bridge_timings structure

Biju Das <biju.das.jz@...>

From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

commit b0a6b94027c85857f768a586cbcf1e96ee1d04ae upstreaam.

Extend the drm_bridge_timings structure with a new dual_link field to
indicate that the bridge's input bus carries data on two separate
physical links. The first use case is LVDS dual-link mode where even-
and odd-numbered pixels are transferred on separate LVDS links.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
include/drm/drm_bridge.h | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index bd850747ce54..d26eaa317fc2 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -266,6 +266,14 @@ struct drm_bridge_timings {
* input signal after the clock edge.
u32 hold_time_ps;
+ /**
+ * @dual_link:
+ *
+ * True if the bus operates in dual-link mode. The exact meaning is
+ * dependent on the bus type. For LVDS buses, this indicates that even-
+ * and odd-numbered pixels are received on separate links.
+ */
+ bool dual_link;


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