[v5,05/11] drm/mediatek: convert dpi driver to use drm_of_find_panel_or_bridge
diff mbox series

Message ID 20181003034151.31452-6-bibby.hsieh@mediatek.com
State New
Headers show
Series
  • drm/mediatek: support hdmi output for mt2701 and mt7623
Related show

Commit Message

Bibby Hsieh Oct. 3, 2018, 3:41 a.m. UTC
From: chunhui dai <chunhui.dai@mediatek.com>

Convert dpi driver to use drm_of_find_panel_or_bridge.
This changes some error messages to debug messages (in the graph core).
Graph connections are often "no connects" depending on the particular
board, so we want to avoid spurious messages. Plus the kernel is not a
DT validator.
related links:
[1] https://lkml.org/lkml/2017/2/3/716
[2] https://lkml.org/lkml/2017/2/3/719

Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

Patch
diff mbox series

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 0dbe9345fa2e..08915e1765f8 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -14,6 +14,7 @@ 
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
 #include <linux/kernel.h>
 #include <linux/component.h>
 #include <linux/platform_device.h>
@@ -668,7 +669,6 @@  static int mtk_dpi_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct mtk_dpi *dpi;
 	struct resource *mem;
-	struct device_node *bridge_node;
 	int comp_id;
 	int ret;
 
@@ -714,16 +714,12 @@  static int mtk_dpi_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	bridge_node = of_graph_get_remote_node(dev->of_node, 0, 0);
-	if (!bridge_node)
-		return -ENODEV;
-
-	dev_info(dev, "Found bridge node: %pOF\n", bridge_node);
+	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
+					  NULL, &dpi->bridge);
+	if (ret)
+		return ret;
 
-	dpi->bridge = of_drm_find_bridge(bridge_node);
-	of_node_put(bridge_node);
-	if (!dpi->bridge)
-		return -EPROBE_DEFER;
+	dev_info(dev, "Found bridge node: %pOF\n", dpi->bridge->of_node);
 
 	comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI);
 	if (comp_id < 0) {