linux-kernel - [PATCH v4 1/4] drm: sun4i: dsi: Use drm_of_find_panel_or

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Message-Id: <20210322140152.101709-2-jagan@amarulasolutions.com>
Date:   Mon, 22 Mar 2021 19:31:49 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Samuel Holland <samuel@...lland.org>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-amarula@...rulasolutions.com, linux-sunxi@...glegroups.com,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: [PATCH v4 1/4] drm: sun4i: dsi: Use drm_of_find_panel_or_bridge

Replace of_drm_find_panel with drm_of_find_panel_or_bridge
for finding panel, this indeed help to find the bridge if
bridge support added.

Added NULL in bridge argument, same will replace with bridge
parameter once bridge supported.

Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
Changes for v4, v3:
- none

 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index 4f5efcace68e..2e9e7b2d4145 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -21,6 +21,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_mipi_dsi.h>
+#include <drm/drm_of.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
@@ -963,10 +964,14 @@ static int sun6i_dsi_attach(struct mipi_dsi_host *host,
 			    struct mipi_dsi_device *device)
 {
 	struct sun6i_dsi *dsi = host_to_sun6i_dsi(host);
-	struct drm_panel *panel = of_drm_find_panel(device->dev.of_node);
+	struct drm_panel *panel;
+	int ret;
+
+	ret = drm_of_find_panel_or_bridge(dsi->dev->of_node, 0, 0,
+					  &panel, NULL);
+	if (ret)
+		return ret;
 
-	if (IS_ERR(panel))
-		return PTR_ERR(panel);
 	if (!dsi->drm || !dsi->drm->registered)
 		return -EPROBE_DEFER;
 
-- 
2.25.1