From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1B4353DDAF3 for ; Fri, 17 Jul 2026 07:23:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.204.34.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784273036; cv=none; b=jfY2qZiIFiw1dDQHbn+WF3GZ4B/qXkvDGn0BGk5JxNnUOhIxsHnNtUNF6Ww6uGn8UCWV+ekiOZWDp0GLzthkNMoxWdLbU175+y2irW7Bfep87ZgtcLKuEL9zXe1FHlIljm9DdF9BTvLN06zARWIfimpfUglZXAMw8bMaFKJ7Gn0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784273036; c=relaxed/simple; bh=qKfQNlkfq/KM9oQGuS1GCb5y4ugvg1maTB+9PMhEEiY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=P2O9hF56lXasxBcdrZFRzM/S50XkMB2GULYrr+mXDPF+RmZNkoacxjNJYym1vMfEWrdXijtmfEoK9SiYQ01i2a6fJ9tLy5XbJw5ro0RamV4niufGHgeDhAuwKWVAiv9UMqm1vo/7hGxreYqpkA6KkafGIqLPtYjGioq7bwx+z6I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com; spf=pass smtp.mailfrom=airkyi.com; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b=m0v/PbXF; arc=none smtp.client-ip=54.204.34.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=airkyi.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b="m0v/PbXF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1784273021; bh=0RTzPafltaazrRSyLxjVEGPsM2NQMO3dAbcjHX9A5Js=; h=From:To:Subject:Date:Message-Id; b=m0v/PbXFjoVfg/etc86IfXSNraL9jpHMY9RVcks7wSEJ6lMm59724GgFeT8VUohGK CLoFgEvoZr5hOaMgwAhskuWhBO19vdlGz86py7MduylhqXxww3/OmqYxc964lNwSJq vXTcu/7iy2rxRQ4PQEo+ZfdZYziS5Thg7BFjU6Cg= X-QQ-mid: esmtpsz21t1784273020t7817df7e X-QQ-Originating-IP: leVM35CjBJyorupngfOKPVO9zy8OXxTLO9HgUYQgbrQ= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 17 Jul 2026 15:23:36 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 7948544626275222202 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 , Chaoyi Chen , Sebastian Reichel , Nicolas Frattaroli 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 Subject: [PATCH v3 2/5] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Fri, 17 Jul 2026 15:23:20 +0800 Message-Id: <20260717072323.96-3-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260717072323.96-1-kernel@airkyi.com> References: <20260717072323.96-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: NPQ6h5IKr4GpDPYSgRuo+O6HS1zx7mm7cSbQUgenL4oXgeq9mf2jA0k3 d+9lnMzk2a/L/mwZxCIQ4oGNJuog5koOSc/D+dpm9GHTziYhK3jvQC3LOneLFAVGWoNRaPV zet/8GTaQOVABtFLEgrpSvc+0fhQeL/T0Y76Zfch3ETn4nCQmkGklgzm4IRPOx1fTgCqSf+ zLUsTi2CfRRnkTcDbnHUZS4ncHT/eDNN31SeC6Bv7c3vb+0ohzIa3YQHPdgGGNtympDoKHl ECoKr0mQOXvoVmftnt8aWQeQw5QYVLUeRCB/1t5fQsVs8qNOaiGn3rOhmFxE8WUuMq4YjvQ 4PBwem56TMPE22QG8iX7gFym71zuuNrSi44c6s1Yp+imrJJDa4mUDBzaJw5RbAlEq3UfrTR FMwGWOg+ME4xOZrxh0vQPeRVRi6ssX9v/YDt17jGJZgJd+u3sha71guZC4ERHCyE/ZsZCOM LK61GOSRGZ+bbhf1Gn6yJcCdV52r7krRCoI33a/DUYEeXODYZmXUCAXCKD22/HP1/o9B/MS VjaIVT197RHX8NJ1DaR+JK4hh37VSon7O8JQRYP/dXmk8LOvZbtlyONOUxtUqX7wZBocmoq TBFHCtChX6r6iqBhlb/4joTzK8ZqlP7PN3otshlo+pxdYmyuYtdMZIB5UtWVYFaYTHhSJvP POtqQKkfVRY0QVdVgICvq9zWMPk+QqwAljIhsf2OeKTCpZ5a8bn/AQokjKCUVY/DyahV1do mch1OfrRzmSBqsGn8zy19ZHyNetFx0RCtoNCSHcSsw+OljBrQ4DkfXd73MH2H61QMajsAt4 vNcamxfpUkzBUGAK4idcgqI+x7fMLFTzCmzrXYREAXrZC6jSuWtoa4yT6BBvGUOcjvl4U5k hgd6DuFIl8vbSqFMzMZW5U7Qick/wb/r7wk3Rn1ARRz8Pf9v6ixzLb/QyBPAsGB0kf+Ph/B ppOBCKyDw52P7wkzl4APkFmGOSjclDN+MQs2qKquzXTGToi6wa+veKMbjPmD7UshLRgiUBK Jhic0qYaGSgSEqVvPK X-QQ-XMRINFO: Nq+8W0+stu50tPAe92KXseR0ZZmBTk3gLg== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 1ed21a8713bf..06a1466f49bd 100644 --- a/drivers/gpu/drm/bridge/aux-bridge.c +++ b/drivers/gpu/drm/bridge/aux-bridge.c @@ -33,8 +33,9 @@ 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 @@ -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) -- 2.53.0