summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorchunhui dai <chunhui.dai@mediatek.com>2018-10-03 11:41:45 +0800
committerCK Hu <ck.hu@mediatek.com>2018-10-03 11:56:32 +0800
commitbcc97daee6b8120d1ffeee0073b49bfbd3df026d (patch)
treeb321378eb62d4fa033f3067bfca654974badaa80
parent55c78aa5c808ba7a95bf271a3486f0d14be519ce (diff)
downloadlinux-stable-bcc97daee6b8120d1ffeee0073b49bfbd3df026d.tar.gz
linux-stable-bcc97daee6b8120d1ffeee0073b49bfbd3df026d.tar.bz2
linux-stable-bcc97daee6b8120d1ffeee0073b49bfbd3df026d.zip
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: chunhui dai <chunhui.dai@mediatek.com> Signed-off-by: CK Hu <ck.hu@mediatek.com>
-rw-r--r--drivers/gpu/drm/mediatek/mtk_dpi.c16
1 files changed, 6 insertions, 10 deletions
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) {