linux-kernel - [PATCH v5 08/10] drm/bridge: sii9234: Use fwnode APIs to abstract DT dependent API away

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Message-Id: <20240503164106.1172650-9-sui.jingfeng@linux.dev>
Date: Sat,  4 May 2024 00:41:04 +0800
From: Sui Jingfeng <sui.jingfeng@...ux.dev>
To: Andrzej Hajda <andrzej.hajda@...el.com>
Cc: 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>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Sui Jingfeng <sui.jingfeng@...ux.dev>
Subject: [PATCH v5 08/10] drm/bridge: sii9234: Use fwnode APIs to abstract DT dependent API away

Switch to use the freshly created drm_bridge_set_node() helper, no
functional changes. The reason behind of this introduction is that
the name 'of_node' itself has a smell of DT dependent, and it is a
internal memeber, when there has helper function, we should use the
revelant helper and avoid directly referencing and/or dereferencing
it.

Signed-off-by: Sui Jingfeng <sui.jingfeng@...ux.dev>
---
 drivers/gpu/drm/bridge/sii9234.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/sii9234.c b/drivers/gpu/drm/bridge/sii9234.c
index d8373d918324..19b09634a134 100644
--- a/drivers/gpu/drm/bridge/sii9234.c
+++ b/drivers/gpu/drm/bridge/sii9234.c
@@ -817,10 +817,11 @@ static int sii9234_init_resources(struct sii9234 *ctx,
 				  struct i2c_client *client)
 {
 	struct i2c_adapter *adapter = client->adapter;
+	struct fwnode_handle *fwnode = dev_fwnode(ctx->dev);
 	int ret;
 
-	if (!ctx->dev->of_node) {
-		dev_err(ctx->dev, "not DT device\n");
+	if (!fwnode) {
+		dev_err(ctx->dev, "firmware data is missing\n");
 		return -ENODEV;
 	}
 
@@ -886,6 +887,7 @@ static int sii9234_probe(struct i2c_client *client)
 	struct i2c_adapter *adapter = client->adapter;
 	struct sii9234 *ctx;
 	struct device *dev = &client->dev;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	int ret;
 
 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
@@ -922,7 +924,7 @@ static int sii9234_probe(struct i2c_client *client)
 	i2c_set_clientdata(client, ctx);
 
 	ctx->bridge.funcs = &sii9234_bridge_funcs;
-	ctx->bridge.of_node = dev->of_node;
+	drm_bridge_set_node(&ctx->bridge, fwnode);
 	drm_bridge_add(&ctx->bridge);
 
 	sii9234_cable_in(ctx);
-- 
2.34.1