linux-kernel - [PATCH v4 4/9] drm-bridge: display-connector: Use fwnode API to acquire device properties

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240422191903.255642-5-sui.jingfeng@linux.dev>
Date: Tue, 23 Apr 2024 03:18:58 +0800
From: Sui Jingfeng <sui.jingfeng@...ux.dev>
To: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Phong LE <ple@...libre.com>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Sui Jingfeng <sui.jingfeng@...ux.dev>
Subject: [PATCH v4 4/9] drm-bridge: display-connector: Use fwnode API to acquire device properties

Make this driver less DT-dependent by using the fwnode helper functions,
should be no functional changes for DT based systems. Do the necessary
works before it can be truely DT-independent, this patch do no harms even
though there is no user yet.

Signed-off-by: Sui Jingfeng <sui.jingfeng@...ux.dev>
---
 drivers/gpu/drm/bridge/display-connector.c | 24 +++++++++++-----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c
index ab8e00baf3f1..d80cb7bc59e6 100644
--- a/drivers/gpu/drm/bridge/display-connector.c
+++ b/drivers/gpu/drm/bridge/display-connector.c
@@ -204,6 +204,7 @@ static int display_connector_get_supply(struct platform_device *pdev,
 
 static int display_connector_probe(struct platform_device *pdev)
 {
+	struct fwnode_handle *fwnode = dev_fwnode(&pdev->dev);
 	struct display_connector *conn;
 	unsigned int type;
 	const char *label = NULL;
@@ -215,15 +216,15 @@ static int display_connector_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, conn);
 
-	type = (uintptr_t)of_device_get_match_data(&pdev->dev);
+	type = (uintptr_t)device_get_match_data(&pdev->dev);
 
 	/* Get the exact connector type. */
 	switch (type) {
 	case DRM_MODE_CONNECTOR_DVII: {
 		bool analog, digital;
 
-		analog = of_property_read_bool(pdev->dev.of_node, "analog");
-		digital = of_property_read_bool(pdev->dev.of_node, "digital");
+		analog = fwnode_property_present(fwnode, "analog");
+		digital = fwnode_property_present(fwnode, "digital");
 		if (analog && !digital) {
 			conn->bridge.type = DRM_MODE_CONNECTOR_DVIA;
 		} else if (!analog && digital) {
@@ -240,8 +241,7 @@ static int display_connector_probe(struct platform_device *pdev)
 	case DRM_MODE_CONNECTOR_HDMIA: {
 		const char *hdmi_type;
 
-		ret = of_property_read_string(pdev->dev.of_node, "type",
-					      &hdmi_type);
+		ret = fwnode_property_read_string(fwnode, "type", &hdmi_type);
 		if (ret < 0) {
 			dev_err(&pdev->dev, "HDMI connector with no type\n");
 			return -EINVAL;
@@ -271,7 +271,7 @@ static int display_connector_probe(struct platform_device *pdev)
 	conn->bridge.interlace_allowed = true;
 
 	/* Get the optional connector label. */
-	of_property_read_string(pdev->dev.of_node, "label", &label);
+	fwnode_property_read_string(fwnode, "label", &label);
 
 	/*
 	 * Get the HPD GPIO for DVI, HDMI and DP connectors. If the GPIO can provide
@@ -309,12 +309,12 @@ static int display_connector_probe(struct platform_device *pdev)
 	if (type == DRM_MODE_CONNECTOR_DVII ||
 	    type == DRM_MODE_CONNECTOR_HDMIA ||
 	    type == DRM_MODE_CONNECTOR_VGA) {
-		struct device_node *phandle;
+		struct fwnode_handle *phandle;
 
-		phandle = of_parse_phandle(pdev->dev.of_node, "ddc-i2c-bus", 0);
-		if (phandle) {
-			conn->bridge.ddc = of_get_i2c_adapter_by_node(phandle);
-			of_node_put(phandle);
+		phandle = fwnode_find_reference(fwnode, "ddc-i2c-bus", 0);
+		if (!IS_ERR_OR_NULL(phandle)) {
+			conn->bridge.ddc = i2c_get_adapter_by_fwnode(phandle);
+			fwnode_handle_put(phandle);
 			if (!conn->bridge.ddc)
 				return -EPROBE_DEFER;
 		} else {
@@ -358,7 +358,7 @@ static int display_connector_probe(struct platform_device *pdev)
 	}
 
 	conn->bridge.funcs = &display_connector_bridge_funcs;
-	conn->bridge.of_node = pdev->dev.of_node;
+	drm_bridge_set_node(&conn->bridge, fwnode);
 
 	if (conn->bridge.ddc)
 		conn->bridge.ops |= DRM_BRIDGE_OP_EDID
-- 
2.34.1