linux-kernel - [PATCH 17/21] drm/bridge: tda998x: Remove component support

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Message-Id: <20251126-feature_tilcdc-v1-17-49b9ef2e3aa0@bootlin.com>
Date: Wed, 26 Nov 2025 18:35:59 +0100
From: "Kory Maincent (TI.com)" <kory.maincent@...tlin.com>
To: Jyri Sarha <jyri.sarha@....fi>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.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>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Russell King <linux@...linux.org.uk>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Tony Lindgren <tony@...mide.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>
Cc: Markus Schneider-Pargmann <msp@...libre.com>, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>, 
 Louis Chauvet <louis.chauvet@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Miguel Gazquez <miguel.gazquez@...tlin.com>, 
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-omap@...r.kernel.org, 
 "Kory Maincent (TI.com)" <kory.maincent@...tlin.com>
Subject: [PATCH 17/21] drm/bridge: tda998x: Remove component support

The tilcdc driver no longer uses the component framework to bind the
tda998x bridge driver. The component bind/unbind operations and the
encoder initialization code are now dead code and can be safely removed.

Signed-off-by: Kory Maincent (TI.com) <kory.maincent@...tlin.com>
---
 drivers/gpu/drm/bridge/tda998x_drv.c | 69 +-----------------------------------
 1 file changed, 1 insertion(+), 68 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tda998x_drv.c b/drivers/gpu/drm/bridge/tda998x_drv.c
index e636459d91857..865285ba2bd8c 100644
--- a/drivers/gpu/drm/bridge/tda998x_drv.c
+++ b/drivers/gpu/drm/bridge/tda998x_drv.c
@@ -4,7 +4,6 @@
  * Author: Rob Clark <robdclark@...il.com>
  */
 
-#include <linux/component.h>
 #include <linux/gpio/consumer.h>
 #include <linux/hdmi.h>
 #include <linux/i2c.h>
@@ -1963,85 +1962,19 @@ static int tda998x_create(struct device *dev)
 	return ret;
 }
 
-/* DRM encoder functions */
-
-static int tda998x_encoder_init(struct device *dev, struct drm_device *drm)
-{
-	struct tda998x_priv *priv = dev_get_drvdata(dev);
-	u32 crtcs = 0;
-	int ret;
-
-	if (dev->of_node)
-		crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
-
-	/* If no CRTCs were found, fall back to our old behaviour */
-	if (crtcs == 0) {
-		dev_warn(dev, "Falling back to first CRTC\n");
-		crtcs = 1 << 0;
-	}
-
-	priv->encoder.possible_crtcs = crtcs;
-
-	ret = drm_simple_encoder_init(drm, &priv->encoder,
-				      DRM_MODE_ENCODER_TMDS);
-	if (ret)
-		goto err_encoder;
-
-	ret = drm_bridge_attach(&priv->encoder, &priv->bridge, NULL, 0);
-	if (ret)
-		goto err_bridge;
-
-	return 0;
-
-err_bridge:
-	drm_encoder_cleanup(&priv->encoder);
-err_encoder:
-	return ret;
-}
-
-static int tda998x_bind(struct device *dev, struct device *master, void *data)
-{
-	struct drm_device *drm = data;
-
-	return tda998x_encoder_init(dev, drm);
-}
-
-static void tda998x_unbind(struct device *dev, struct device *master,
-			   void *data)
-{
-	struct tda998x_priv *priv = dev_get_drvdata(dev);
-
-	drm_encoder_cleanup(&priv->encoder);
-}
-
-static const struct component_ops tda998x_ops = {
-	.bind = tda998x_bind,
-	.unbind = tda998x_unbind,
-};
-
 static int
 tda998x_probe(struct i2c_client *client)
 {
-	int ret;
-
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 		dev_warn(&client->dev, "adapter does not support I2C\n");
 		return -EIO;
 	}
 
-	ret = tda998x_create(&client->dev);
-	if (ret)
-		return ret;
-
-	ret = component_add(&client->dev, &tda998x_ops);
-	if (ret)
-		tda998x_destroy(&client->dev);
-	return ret;
+	return tda998x_create(&client->dev);
 }
 
 static void tda998x_remove(struct i2c_client *client)
 {
-	component_del(&client->dev, &tda998x_ops);
 	tda998x_destroy(&client->dev);
 }
 

-- 
2.43.0