linux-kernel - [PATCH v2 31/35] drm/bridge: Make encoder pointer deprecated

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Message-Id: <20250204-bridge-connector-v2-31-35dd6c834e08@kernel.org>
Date: Tue, 04 Feb 2025 15:57:59 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
 Simona Vetter <simona@...ll.ch>, 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>, 
 Douglas Anderson <dianders@...omium.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Maxime Ripard <mripard@...nel.org>
Subject: [PATCH v2 31/35] drm/bridge: Make encoder pointer deprecated

Other entities (drm_connector.crtc, drm_encoder.crtc, etc.) have
pointer to other currently bound entities. They are all considered
relevant only for non-atomic drivers, and generally perceived as
deprecated in favour of the equivalent pointers in the atomic states.

It used to be useful because we didn't have alternatives, but now that
we do, let's make sure it's done for drm_bridge.encoder too.

Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
 include/drm/drm_bridge.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 7a3664770c3ab8634a69e953b37a30ac467139b3..80ca28af4c56449ffa760c198c3016b456f1f346 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -822,12 +822,18 @@ enum drm_bridge_ops {
 struct drm_bridge {
 	/** @base: inherit from &drm_private_object */
 	struct drm_private_obj base;
 	/** @dev: DRM device this bridge belongs to */
 	struct drm_device *dev;
-	/** @encoder: encoder to which this bridge is connected */
+
+	/** @encoder:
+	 *
+	 * encoder to which this bridge is connected. Only meaningful
+	 * for non-atomic drivers. Deprecated.
+	 */
 	struct drm_encoder *encoder;
+
 	/** @chain_node: used to form a bridge chain */
 	struct list_head chain_node;
 	/** @of_node: device node pointer to the bridge */
 	struct device_node *of_node;
 	/** @list: to keep track of all added bridges */

-- 
2.48.0