[PATCH v2 11/11] drm/bridge: rcar: Convert to drm_of_get_data_lanes_count_ep

[Marek Vasut <marex@xxxxxxx>]

Convert driver to use this new helper to standardize
OF "data-lanes" parsing.

Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Maxime Ripard <maxime@xxxxxxxxxx>
Cc: Robert Foss <robert.foss@xxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
V2: - Rename drm_of_get_data_lanes{,_ep} to drm_of_get_data_lanes_count{,_ep}
    - Add RB from Andrzej
---
 drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c b/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
index 891bb956fd61b..67dce337098a5 100644
--- a/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
+++ b/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
@@ -683,19 +683,10 @@ static int rcar_mipi_dsi_parse_dt(struct rcar_mipi_dsi *dsi)
 	u32 data_lanes[4];
 	int ret;
 
-	ep = of_graph_get_endpoint_by_regs(dsi->dev->of_node, 1, 0);
-	if (!ep) {
-		dev_dbg(dsi->dev, "unconnected port@1\n");
-		return -ENODEV;
-	}
-
-	ret = of_property_read_variable_u32_array(ep, "data-lanes", data_lanes,
-						  1, 4);
-	of_node_put(ep);
-
+	ret = drm_of_get_data_lanes_count_ep(dsi->dev->of_node, 1, 0, 1, 4);
 	if (ret < 0) {
 		dev_err(dsi->dev, "missing or invalid data-lanes property\n");
-		return -ENODEV;
+		return ret;
 	}
 
 	dsi->num_data_lanes = ret;
-- 
2.35.1