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Tue, 20 Oct 2026 15:28:56 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 14835207740460632704 From: Chaoyi Chen To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Vinod Koul , Sebastian Reichel , Nicolas Frattaroli , Heikki Krogerus Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-phy@lists.infradead.org, Chaoyi Chen Subject: [PATCH v8 4/7] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Tue, 20 Oct 2026 15:28:13 +0800 Message-Id: <20261020072816.180-5-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20261020072816.180-1-kernel@airkyi.com> References: <20261020072816.180-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MR/iVh5QLeieGW1/EkYixm9kvWksSWJXK/FNwzbE0N9OSQhnipQwut70 3El+TzK207NCjiWwqK8OkP3cPF7rbLFItnSzg1lfoU9yl7600oyRf6c/TShMe9UWo4m0B8W PDxPtq6Zo+Msmb2eZYaws7UU0IE7+u4ffMpYL5LrRfghZIlpb5dcQh4xBvRTKleenkFUj// 2Z/M+uPM7A5IL7565udGov6U+HSsX3JJ6vtmOFQlm3KGPzNyYLQAyS3HRj6J1Fb3njhV+ST yOWblElqsOLSy14dYvyBwlv9XMde9z26oBfwOJg42CLef0sG69vdF+xy8QHlFz+zxDM+SEI yYjVlATmA5TixEAFcJ+bBHDdlV1x0cKT8T3RXy90DGk/wQjuwL9HdoBfdWfNNgwvXXVdNC1 MbnteCi4QzI36MwHNhgU0D9s92hQoJJTyk6E5bA8pWR9LBKNJWWqtCzKujjJI6jnIjzHavL BnAiiq0PVPXi5deeSEHx50+EezszOaZa2imH/nI5+qmD39UEAMJFWHDHeuVxiTiS3jVJeek 5snSIRXMLyaI8eutV0UbSH+ykLe7qcHAl7wrq0rnK3qW9HOoguIDO8E4EX7c/0cSz5zAoFw iblzo872ZC+AsgBQwQOdLe7Pgyv+4xVGhDHB53DcG4FAiZ4GPWdN9kjtQzvm7cGkAzrTEPE k1Z4K0Zf4OFAJtH+n4nGnPnW3JRpZEWJ98DJKpdTrjzynj1BWrFGeh938mW099lPcDADJ16 C6/V6V9SMj7+fmB9J/F+nOLfWixl687ararXKvmp8j+PFWTcKeOULjJyvvwXRMgRFdkljb/ mRd6sTmjJeQazYwFvrLZdoFRtxptyx2+L8GNvyOh+0xQShwz5L4SzWTGAxcqKXu5kqP+Z/A zZRf1gWTGe4VOhh5cv31dwEUNQyiz60UuR+xi5QHTo4edoMyQuw68Yltji3Vi8ufa9h4pT5 9gRxoQFypoWr5vSqJepP89kqqD1TkdoeGRx8WNMGyhXvaYuO7Q/rh2waWJo9UBgpPrl6kyD jRqdhGwPQDhko/b6qV+I5h9veyrkm1jJtzvdUdTQ== X-QQ-XMRINFO: NyFYKkN4Ny6FuXrnB5Ye7Aabb3ujjtK+gg== X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261020_002950_280114_3B12F3E1 X-CRM114-Status: GOOD ( 12.87 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Archive: List-Post: List-Help: List-Subscribe: , X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" X-Spam-Status: No, score=-17.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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 Reviewed-by: Nicolas Frattaroli Reviewed-by: Sebastian Reichel --- (no changes since v3) Changes in v2: - Fix incorrect function names in the documentation comments. --- drivers/gpu/drm/bridge/aux-bridge.c | 26 +++++++++++++++++++++++--- include/drm/bridge/aux-bridge.h | 6 ++++++ 2 files changed, 29 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/aux-bridge.c b/drivers/gpu/drm/bridge/aux-bridge.c index 169939d23310..2b48612d6d1b 100644 --- a/drivers/gpu/drm/bridge/aux-bridge.c +++ b/drivers/gpu/drm/bridge/aux-bridge.c @@ -34,8 +34,9 @@ static void drm_aux_bridge_unregister_adev(void *_adev) } /** - * drm_aux_bridge_register - Create a simple bridge device to link the chain + * drm_aux_bridge_register_from_node - 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 @@ -43,7 +44,7 @@ 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; @@ -63,7 +64,10 @@ 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) { @@ -81,6 +85,22 @@ 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 cca07a8e2d45..67f74ed287d9 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) -- 2.53.0 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy