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Commit bcc97dae authored by chunhui dai's avatar chunhui dai Committed by CK Hu
Browse files

drm/mediatek: convert dpi driver to use drm_of_find_panel_or_bridge 

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: default avatarchunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: default avatarCK Hu <ck.hu@mediatek.com>
parent 55c78aa5

drivers/gpu/drm/mediatek/mtk_dpi.c

+6 −10
Original line number Diff line number Diff line
@@ -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) {