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Mon, 19 Jan 2026 15:31:21 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 14245727192888249367 From: Chaoyi Chen To: Heikki Krogerus , Greg Kroah-Hartman , Dmitry Baryshkov , Peter Chen , Luca Ceresoli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , Kishon Vijay Abraham I , Heiko Stuebner , Sandy Huang , Andy Yan , Yubing Zhang , Frank Wang , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Amit Sunil Dhamne , Chaoyi Chen , Dragan Simic , Johan Jonker , Diederik de Haas , Peter Robinson 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 Subject: [PATCH v14 2/9] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Mon, 19 Jan 2026 15:30:53 +0800 Message-Id: <20260119073100.143-3-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260119073100.143-1-kernel@airkyi.com> References: <20260119073100.143-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MgOcfNUnrri+sqbCh2B7bRF7YnOvRybRTkLsFlF0iVOUCyAXF4ZU9JNC Npq/5bKYRsboTYSvj5t28zBYZKy5ZYc3t3qupUeg52J0apd6CbhYlLHhgbT4R77VxP0D0di AJ73iJ2oixavKTjRsvyxLWiaH6B3+KI5hKzw8lz9/YfI8ONSCUl2DXUFYsAotuAXjc/j1Wk Nq14q8h8LpOKau42zH1ryczN2TkFAAUdEKow+9Wet89dqzb6h7dpaSzFZlEBO9FlpL804/f Nb9h/Wywn3/FOgRt2FP/vOfkxus6eBUah2irq9bYNXbfrIQUYfdQ9BtWWDHob0rMo0Szh/S pxGmzvezZhmPHFucBepr2jIAc9WM4Mhjk+UaQLz5RQk9GAF0D3Ba54ibUacf+H0EfQiF8qr t9NYgOhap01tMR7n2bFSPwwbyGrGSUcMHdpYZtnTDosZXbglMpL61zOfERvw3/5OADvoGLb nx2/I1eQgu1QxXWUxxM0oy8I2pcxgaDR9FGeVVmhhN+sIq1I/yj5ZEZ9D25pissIxSBtUL6 kMBPkHgYvI8lt687U3LzEipvmU0YY4h4kcsps08a2M4XiFZ0GT34gQ9PrMQ+bORBuXx/VRS +eap6hmXCFsy5d+uQRFybF9QxLdoY/REWKZyWjEYRmc/dC8K/MW24eRdVt0xYEagX7J1rDJ J4Y0Hah0CwMePL8i3MEZMa8nO5fTnAXhMXVwGhJDEf9H8K/d1PQcNFGibPRf+RbADQudVZw 6cV/RqL+StNxQN0sx1KFJwvjetzpX9bgKIy0lnw8T+9Y9y5XIKtwr4Fj95poXKD0raHUkVS N9FoQI9SBQZKXcjn28qpVjtclkgbGBhX8NNd0NHzoBOfk6UjtDqIjmKRvB2kLegDCRzSx6/ d9YszO6nVjZMn+eoM6zgT3XrvJyS8GupHQ7kpJp4xUF4Qp9DRCwV9PCviJzrD2m6mhVGfJy O+a4y5U5TTDSdxionRsc8HIOFYqL9+/6/bFmvVSfizDLEJt0xvEsKEnpZ2Z55sMEmupbTco FY8JL5/hdh4eYYL3h8kQZQGUc52Gqg4qaJD+1VvQ== X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Chaoyi Chen 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 Reviewed-by: Neil Armstrong --- (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/a= ux-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 cha= in * @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 =3D parent; adev->dev.release =3D drm_aux_bridge_release; =20 - 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); =20 ret =3D auxiliary_device_init(adev); if (ret) { @@ -80,6 +84,22 @@ int drm_aux_bridge_register(struct device *parent) =20 return devm_add_action_or_reset(parent, drm_aux_bridge_unregister_adev, a= dev); } +EXPORT_SYMBOL_GPL(drm_aux_bridge_register_from_node); + +/** + * drm_aux_bridge_register - Create a simple bridge device to link the cha= in + * @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); =20 struct drm_aux_bridge_data { diff --git a/include/drm/bridge/aux-bridge.h b/include/drm/bridge/aux-bridg= e.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; =20 #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 =20 #if IS_ENABLED(CONFIG_DRM_AUX_HPD_BRIDGE) --=20 2.51.1