linux-kernel - [PATCH v5 1/4] drm/bridge: microchip-lvds: Remove unused drm

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Message-ID: <20250625-microchip-lvds-v5-1-624cf72b2651@microchip.com>
Date: Wed, 25 Jun 2025 10:26:09 +0530
From: Dharma Balasubiramani <dharma.b@...rochip.com>
To: Manikandan Muralidharan <manikandan.m@...rochip.com>, Andrzej Hajda
	<andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>,
	"Robert Foss" <rfoss@...nel.org>, Laurent Pinchart
	<Laurent.pinchart@...asonboard.com>, Jonas Karlman <jonas@...boo.se>, "Jernej
 Skrabec" <jernej.skrabec@...il.com>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>
CC: <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>, "Dharma
 Balasubiramani" <dharma.b@...rochip.com>
Subject: [PATCH v5 1/4] drm/bridge: microchip-lvds: Remove unused drm_panel
 and redundant port node lookup

Drop the unused drm_panel field from the mchp_lvds structure, and remove
the unnecessary port device node lookup, as devm_drm_of_get_bridge()
already performs the required checks internally.

Signed-off-by: Dharma Balasubiramani <dharma.b@...rochip.com>
---
 drivers/gpu/drm/bridge/microchip-lvds.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/gpu/drm/bridge/microchip-lvds.c b/drivers/gpu/drm/bridge/microchip-lvds.c
index 9f4ff82bc6b4..06d4169a2d8f 100644
--- a/drivers/gpu/drm/bridge/microchip-lvds.c
+++ b/drivers/gpu/drm/bridge/microchip-lvds.c
@@ -23,7 +23,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_of.h>
-#include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
@@ -56,7 +55,6 @@ struct mchp_lvds {
 	struct device *dev;
 	void __iomem *regs;
 	struct clk *pclk;
-	struct drm_panel *panel;
 	struct drm_bridge bridge;
 	struct drm_bridge *panel_bridge;
 };
@@ -151,7 +149,6 @@ static int mchp_lvds_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mchp_lvds *lvds;
-	struct device_node *port;
 	int ret;
 
 	if (!dev->of_node)
@@ -173,19 +170,6 @@ static int mchp_lvds_probe(struct platform_device *pdev)
 		return dev_err_probe(lvds->dev, PTR_ERR(lvds->pclk),
 				"could not get pclk_lvds\n");
 
-	port = of_graph_get_remote_node(dev->of_node, 1, 0);
-	if (!port) {
-		dev_err(dev,
-			"can't find port point, please init lvds panel port!\n");
-		return -ENODEV;
-	}
-
-	lvds->panel = of_drm_find_panel(port);
-	of_node_put(port);
-
-	if (IS_ERR(lvds->panel))
-		return -EPROBE_DEFER;
-
 	lvds->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
 
 	if (IS_ERR(lvds->panel_bridge))

-- 
2.43.0