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66 lines
2.1 KiB
Diff
66 lines
2.1 KiB
Diff
From ef9b74fc6412b2402f882b012f78bfb3031aa4c6 Mon Sep 17 00:00:00 2001
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From: chunhui dai <chunhui.dai@mediatek.com>
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Date: Wed, 3 Oct 2018 11:41:45 +0800
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Subject: [PATCH 31/77] drm/mediatek: convert dpi driver to use
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drm_of_find_panel_or_bridge
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Convert dpi driver to use drm_of_find_panel_or_bridge.
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This changes some error messages to debug messages (in the graph core).
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Graph connections are often "no connects" depending on the particular
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board, so we want to avoid spurious messages. Plus the kernel is not a
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DT validator.
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related links:
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[1] https://lkml.org/lkml/2017/2/3/716
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[2] https://lkml.org/lkml/2017/2/3/719
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Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
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Reviewed-by: CK Hu <ck.hu@mediatek.com>
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---
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drivers/gpu/drm/mediatek/mtk_dpi.c | 16 ++++++----------
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1 file changed, 6 insertions(+), 10 deletions(-)
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diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
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index 0dbe9345fa2e..08915e1765f8 100644
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--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
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+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
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@@ -14,6 +14,7 @@
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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+#include <drm/drm_of.h>
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#include <linux/kernel.h>
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#include <linux/component.h>
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#include <linux/platform_device.h>
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@@ -668,7 +669,6 @@ static int mtk_dpi_probe(struct platform_device *pdev)
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struct device *dev = &pdev->dev;
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struct mtk_dpi *dpi;
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struct resource *mem;
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- struct device_node *bridge_node;
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int comp_id;
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int ret;
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@@ -714,16 +714,12 @@ static int mtk_dpi_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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- bridge_node = of_graph_get_remote_node(dev->of_node, 0, 0);
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- if (!bridge_node)
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- return -ENODEV;
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-
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- dev_info(dev, "Found bridge node: %pOF\n", bridge_node);
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+ ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
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+ NULL, &dpi->bridge);
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+ if (ret)
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+ return ret;
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- dpi->bridge = of_drm_find_bridge(bridge_node);
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- of_node_put(bridge_node);
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- if (!dpi->bridge)
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- return -EPROBE_DEFER;
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+ dev_info(dev, "Found bridge node: %pOF\n", dpi->bridge->of_node);
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comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI);
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if (comp_id < 0) {
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--
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2.19.1
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