From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgsg1.qq.com (smtpbgsg1.qq.com [54.254.200.92]) (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 562EC3ED3B4 for ; Fri, 28 Aug 2026 08:48:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.254.200.92 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787906919; cv=none; b=nfzqT/4mOBl0pUzCsrG6hV1VJyIo11oEYewGRHPgf1aLXgtJ+DVOZr8A/XXlcTt76RyNhs7pQGiUFN4hGc+F0vy/n9nJ3PKkkF9y4/rpbTMlrSlPAKcA//X0M500rXF+dDCZV6kp9GXPqrcc3Dpz7kqqD2QTB2Js+ecb9Duvn9c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787906919; c=relaxed/simple; bh=VbpJ93LXbGdQ+BXobxbnLmskw86kv29aRVWL0VYGk9Y=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=kqjQmy//J14l8lsz5zrAkvwi4c6K+T9eHRq7p3UpJNB+tNL6a2Oa836ZliFWhp6dbeDxdqUb1my2zxtyFEe8ig+KsdB/7k/1/M0am6UOb7EeZwI5lLNxx8lYd/oGP3M/fIuuTLlxmB8bqxjkojSMjK/scHhMUPA7La7loeURV08= 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=b8ePwLWc; arc=none smtp.client-ip=54.254.200.92 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="b8ePwLWc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1787906892; bh=uyMGZMKc5y1SgmgDY/tsuzKbkVlmYjdT8Q636L6W9/0=; h=From:To:Subject:Date:Message-Id; b=b8ePwLWcWOI+xkIw62G815/sIHuDwlzG+vJi5gr+zMYBTdgS7p1q+N6ebgu8dBQYl m3ZF0Cx/kFC3PoNRVWupDibx1mkbEe5bnmTlwfEisqgUeIcSV8MNFh5JQip+cGZFu7 vA+JPQyxfO6bMh19id16ZkYHl1c3kKUWcu6uHMuU= X-QQ-mid: zesmtpgz6t1787906891t1bc82087 X-QQ-Originating-IP: OxvB8j0RZYuReQ0OYIUUtJayIysb859IsfVqPvUZV9Q= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 28 Aug 2026 16:48:05 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 7758792601423077606 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 , 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 Subject: [PATCH v7 4/7] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Fri, 28 Aug 2026 16:47:34 +0800 Message-Id: <20260828084737.565-5-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260828084737.565-1-kernel@airkyi.com> References: <20260828084737.565-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpgz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MyIXMys/8kCtyIOyauqTnT2FdFECnE5zDhFWh9iDGXkAWPdVFLmXnVFx FlFc0GuaA4bKKi1Lb/hh9063WcoYAGw3nPu5F0dPQqqH2rsqCGjF5nzlSZUNMdjhcooI1+L aLoKVVGkKvzuWnF8Ka3xxEr9Su9cUhODz6XzNhh49mVqALFGQ91X/8H09Syc+1JKxOCTdGS iL4mOEZ+yu4JsWxAVSs4CaffwPVKTaftoPc1CMshUgVIE0Q1XjlE1njKVkkM99/NI5bVCgo +e9ySs0B+2u5owjD7OQK442KLO83RqzrgCuzd2BMQoxrMGmrywU+6rzTtiJZ+nJicMAE5We /LNj8KtYATEccKQhBrFTTGD/ioW05l9c4Is/SAVPHIXV/RMtaYve4W+T5lqaIRt37n3ZkC4 PxMGffQE1/IYP2pC6nw30T1q/oOJ44rUUc2jLRtCUynFx7QWx4kuFJgjFO7ctCDh0gqgSKW k0ku5Mm6KzZQilnqW8RA1J7tcrkrVtdfDl90z67QBRYm/KJ9tZJl/yIblya7AB5CM3CMBDu KQJ0BbtAvzWMEoljK3IB/UMj50GUXpn/P6LKFmBkFTb6SFgt48dklR5JQYRURYtUeX49zBC BzKXi+bzHh+pBEvdYPhcNubw+4K2lT7XtRXIM//INMKYRabmXAohkoGJnYn5YzRMHcPP30u 3ailkAVCK65M+8yvO0k5HfrLw8NQ5KTW0IX6nO8QekDmXF8656ZMCOKvHxaeesqs36Obx6D P2nJFV/IGtFzfrkIBFGs07L7tH5qnBnA0tJtP406uVnfI4fgeU4d9GxXKdvi8b14TxkavAY T7nrwAQN3QrtGqfwpLPk7yngudfp13AI4nOK2DamFdf0JrJQgEOji9zFN/AQubNr4+nlxQL k/Qt+3bDkgRBDzTMpbqY9dxu9MmA3dlbDe1M9c6LCJECygA+yeJsaug7wfU3m8SYWKwV07k VHFF3imxJ2wCBLxfSqA8uJfTZNissN9AZrcv7a46ahotfDR5BnEvwAOUxTVYBCR8hWMoP5b jRvnuBAw== 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 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