From: Chaoyi Chen <kernel@airkyi•com>
To: Heikki Krogerus <heikki.krogerus@linux•intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation•org>,
Dmitry Baryshkov <dmitry.baryshkov@oss•qualcomm.com>,
Peter Chen <hzpeterchen@gmail•com>,
Luca Ceresoli <luca.ceresoli@bootlin•com>,
Rob Herring <robh@kernel•org>,
Krzysztof Kozlowski <krzk+dt@kernel•org>,
Conor Dooley <conor+dt@kernel•org>, Vinod Koul <vkoul@kernel•org>,
Kishon Vijay Abraham I <kishon@kernel•org>,
Heiko Stuebner <heiko@sntech•de>,
Sandy Huang <hjc@rock-chips•com>,
Andy Yan <andy.yan@rock-chips•com>,
Yubing Zhang <yubing.zhang@rock-chips•com>,
Frank Wang <frank.wang@rock-chips•com>,
Andrzej Hajda <andrzej.hajda@intel•com>,
Neil Armstrong <neil.armstrong@linaro•org>,
Robert Foss <rfoss@kernel•org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard•com>,
Jonas Karlman <jonas@kwiboo•se>,
Jernej Skrabec <jernej.skrabec@gmail•com>,
Maarten Lankhorst <maarten.lankhorst@linux•intel.com>,
Maxime Ripard <mripard@kernel•org>,
Thomas Zimmermann <tzimmermann@suse•de>,
David Airlie <airlied@gmail•com>, Simona Vetter <simona@ffwll•ch>,
Amit Sunil Dhamne <amitsd@google•com>,
Dragan Simic <dsimic@manjaro•org>,
Johan Jonker <jbx6244@gmail•com>,
Diederik de Haas <didi.debian@cknow•org>,
Peter Robinson <pbrobinson@gmail•com>,
Hugh Cole-Baker <sigmaris@gmail•com>
Cc: linux-usb@vger•kernel.org, devicetree@vger•kernel.org,
linux-kernel@vger•kernel.org, linux-phy@lists•infradead.org,
linux-arm-kernel@lists•infradead.org,
linux-rockchip@lists•infradead.org,
dri-devel@lists•freedesktop.org,
Chaoyi Chen <chaoyi.chen@rock-chips•com>
Subject: [PATCH v15 2/9] drm/bridge: aux: Add drm_aux_bridge_register_from_node()
Date: Wed, 4 Mar 2026 17:41:45 +0800 [thread overview]
Message-ID: <20260304094152.92-3-kernel@airkyi.com> (raw)
In-Reply-To: <20260304094152.92-1-kernel@airkyi.com>
From: Chaoyi Chen <chaoyi.chen@rock-chips•com>
The drm_aux_bridge_register() uses the device->of_node as the
bridge->of_node.
This patch adds drm_aux_bridge_register_from_node() to allow
specifying the of_node corresponding to the bridge.
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips•com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro•org>
---
(no changes since v11)
---
drivers/gpu/drm/bridge/aux-bridge.c | 24 ++++++++++++++++++++++--
include/drm/bridge/aux-bridge.h | 6 ++++++
2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/aux-bridge.c b/drivers/gpu/drm/bridge/aux-bridge.c
index b3e4cdff61d6..52dff4601c2d 100644
--- a/drivers/gpu/drm/bridge/aux-bridge.c
+++ b/drivers/gpu/drm/bridge/aux-bridge.c
@@ -35,6 +35,7 @@ static void drm_aux_bridge_unregister_adev(void *_adev)
/**
* drm_aux_bridge_register - Create a simple bridge device to link the chain
* @parent: device instance providing this bridge
+ * @np: device node pointer corresponding to this bridge instance
*
* Creates a simple DRM bridge that doesn't implement any drm_bridge
* operations. Such bridges merely fill a place in the bridge chain linking
@@ -42,7 +43,7 @@ static void drm_aux_bridge_unregister_adev(void *_adev)
*
* Return: zero on success, negative error code on failure
*/
-int drm_aux_bridge_register(struct device *parent)
+int drm_aux_bridge_register_from_node(struct device *parent, struct device_node *np)
{
struct auxiliary_device *adev;
int ret;
@@ -62,7 +63,10 @@ int drm_aux_bridge_register(struct device *parent)
adev->dev.parent = parent;
adev->dev.release = drm_aux_bridge_release;
- device_set_of_node_from_dev(&adev->dev, parent);
+ if (np)
+ device_set_node(&adev->dev, of_fwnode_handle(np));
+ else
+ device_set_of_node_from_dev(&adev->dev, parent);
ret = auxiliary_device_init(adev);
if (ret) {
@@ -80,6 +84,22 @@ int drm_aux_bridge_register(struct device *parent)
return devm_add_action_or_reset(parent, drm_aux_bridge_unregister_adev, adev);
}
+EXPORT_SYMBOL_GPL(drm_aux_bridge_register_from_node);
+
+/**
+ * drm_aux_bridge_register - Create a simple bridge device to link the chain
+ * @parent: device instance providing this bridge
+ *
+ * Creates a simple DRM bridge that doesn't implement any drm_bridge
+ * operations. Such bridges merely fill a place in the bridge chain linking
+ * surrounding DRM bridges.
+ *
+ * Return: zero on success, negative error code on failure
+ */
+int drm_aux_bridge_register(struct device *parent)
+{
+ return drm_aux_bridge_register_from_node(parent, NULL);
+}
EXPORT_SYMBOL_GPL(drm_aux_bridge_register);
struct drm_aux_bridge_data {
diff --git a/include/drm/bridge/aux-bridge.h b/include/drm/bridge/aux-bridge.h
index c2f5a855512f..7dd1f17a1354 100644
--- a/include/drm/bridge/aux-bridge.h
+++ b/include/drm/bridge/aux-bridge.h
@@ -13,11 +13,17 @@ struct auxiliary_device;
#if IS_ENABLED(CONFIG_DRM_AUX_BRIDGE)
int drm_aux_bridge_register(struct device *parent);
+int drm_aux_bridge_register_from_node(struct device *parent, struct device_node *np);
#else
static inline int drm_aux_bridge_register(struct device *parent)
{
return 0;
}
+
+static inline int drm_aux_bridge_register_from_node(struct device *parent, struct device_node *np)
+{
+ return 0;
+}
#endif
#if IS_ENABLED(CONFIG_DRM_AUX_HPD_BRIDGE)
--
2.51.1
next prev parent reply other threads:[~2026-03-04 9:43 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-04 9:41 [PATCH v15 0/9] Add Type-C DP support for RK3399 EVB IND board Chaoyi Chen
2026-03-04 9:41 ` [PATCH v15 1/9] drm/bridge: Implement generic USB Type-C DP HPD bridge Chaoyi Chen
2026-05-28 15:37 ` Nicolas Frattaroli
2026-05-29 1:18 ` Chaoyi Chen
2026-03-04 9:41 ` Chaoyi Chen [this message]
2026-05-28 15:46 ` [PATCH v15 2/9] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Nicolas Frattaroli
2026-03-04 9:41 ` [PATCH v15 3/9] dt-bindings: phy: rockchip: rk3399-typec-phy: Support mode-switch Chaoyi Chen
2026-03-04 9:41 ` [PATCH v15 4/9] phy: rockchip: phy-rockchip-typec: Add typec_mux/typec_switch support Chaoyi Chen
2026-05-28 20:16 ` Nicolas Frattaroli
2026-05-29 8:13 ` Chaoyi Chen
2026-03-04 9:41 ` [PATCH v15 5/9] phy: rockchip: phy-rockchip-typec: Add DRM AUX bridge Chaoyi Chen
2026-03-04 9:41 ` [PATCH v15 6/9] drm/rockchip: cdn-dp: Support handle lane info without extcon Chaoyi Chen
2026-05-20 11:10 ` Heiko Stuebner
2026-03-04 9:41 ` [PATCH v15 7/9] drm/rockchip: cdn-dp: Add multiple bridges to support PHY port selection Chaoyi Chen
2026-05-20 11:12 ` Heiko Stuebner
2026-03-04 9:41 ` [PATCH v15 8/9] arm64: dts: rockchip: Add missing dp_out port for RK3399 CDN-DP Chaoyi Chen
2026-03-04 9:41 ` [PATCH v15 9/9] arm64: dts: rockchip: rk3399-evb-ind: Add support for DisplayPort Chaoyi Chen
2026-05-20 11:06 ` Heiko Stuebner
2026-05-19 13:43 ` [PATCH v15 0/9] Add Type-C DP support for RK3399 EVB IND board Heikki Krogerus
2026-05-20 1:13 ` Chaoyi Chen
2026-05-20 11:03 ` Heiko Stuebner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260304094152.92-3-kernel@airkyi.com \
--to=kernel@airkyi$(echo .)com \
--cc=Laurent.pinchart@ideasonboard$(echo .)com \
--cc=airlied@gmail$(echo .)com \
--cc=amitsd@google$(echo .)com \
--cc=andrzej.hajda@intel$(echo .)com \
--cc=andy.yan@rock-chips$(echo .)com \
--cc=chaoyi.chen@rock-chips$(echo .)com \
--cc=conor+dt@kernel$(echo .)org \
--cc=devicetree@vger$(echo .)kernel.org \
--cc=didi.debian@cknow$(echo .)org \
--cc=dmitry.baryshkov@oss$(echo .)qualcomm.com \
--cc=dri-devel@lists$(echo .)freedesktop.org \
--cc=dsimic@manjaro$(echo .)org \
--cc=frank.wang@rock-chips$(echo .)com \
--cc=gregkh@linuxfoundation$(echo .)org \
--cc=heikki.krogerus@linux$(echo .)intel.com \
--cc=heiko@sntech$(echo .)de \
--cc=hjc@rock-chips$(echo .)com \
--cc=hzpeterchen@gmail$(echo .)com \
--cc=jbx6244@gmail$(echo .)com \
--cc=jernej.skrabec@gmail$(echo .)com \
--cc=jonas@kwiboo$(echo .)se \
--cc=kishon@kernel$(echo .)org \
--cc=krzk+dt@kernel$(echo .)org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-phy@lists$(echo .)infradead.org \
--cc=linux-rockchip@lists$(echo .)infradead.org \
--cc=linux-usb@vger$(echo .)kernel.org \
--cc=luca.ceresoli@bootlin$(echo .)com \
--cc=maarten.lankhorst@linux$(echo .)intel.com \
--cc=mripard@kernel$(echo .)org \
--cc=neil.armstrong@linaro$(echo .)org \
--cc=pbrobinson@gmail$(echo .)com \
--cc=rfoss@kernel$(echo .)org \
--cc=robh@kernel$(echo .)org \
--cc=sigmaris@gmail$(echo .)com \
--cc=simona@ffwll$(echo .)ch \
--cc=tzimmermann@suse$(echo .)de \
--cc=vkoul@kernel$(echo .)org \
--cc=yubing.zhang@rock-chips$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox