From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgau1.qq.com (smtpbgau1.qq.com [54.206.16.166]) (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 A873B371D0A for ; Thu, 21 May 2026 03:29:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.206.16.166 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779334176; cv=none; b=KZw/4d5gfX6l9LqbWHYZjNsD0kETg8VeVrZUUb726t3ngdEnn6+jhpFgCmn50ItNgmYs5N2vOop6PPT4hZq1qiOfTGraHorEe1L5j6kUnHHrBHO/3Qwkl+cAfBihLQauF+B7y/lFzKSsCAnlm1pkbIaetwNgoLgJFpe06l8Vx0c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779334176; c=relaxed/simple; bh=lMIafWtlfkOyuKEqD6EYHnLnuD7hBs1GYcs/VV5ZZ8g=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=CjiTQQlGEcl1iaYvJIiMsWfTLZNoqkQsD+kuUNcLX33VdwU6u6qnSqmlzupltuKLrS4k88DPGdrTP2qBM51hmXRPp3c+mfry4QqaUPOcnA1PorpUZgZ1Y5q+36L1R5JbIxC4rvEZOceUn3oE+NucRY5bQSx6c3190W26awNR8/w= 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=Vv/PiX58; arc=none smtp.client-ip=54.206.16.166 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="Vv/PiX58" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1779334169; bh=NA3zWcCN+LNcIiy4LfRk+qi3M7FDJHrSG6hmfEKlJsw=; h=From:To:Subject:Date:Message-Id; b=Vv/PiX58MJerlFRn2Qs5gJxPJM9ZrsdXt2J+kV/N31UDgojuk/315Z7uJ6M1Nnf9y TsoLGiufhOWH99ugnkirR4+de6FOTsLUkdmqfuS+JIU0og8mykXv9L3w8he3BQfstg PEpPWlhAq/oWaBIU623N3YH08rvMju18MZQifJXo= X-QQ-mid: zesmtpsz7t1779334164ta5a04dd0 X-QQ-Originating-IP: hBQ95K8MTql32AYs7HMJrJ6z3IXUmXk+VXXcCPVKIvY= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 21 May 2026 11:29:20 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 3257350597745359929 From: Chaoyi Chen To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Vinod Koul Cc: Heikki Krogerus , Dmitry Baryshkov , Luca Ceresoli , 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 2/5] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Thu, 21 May 2026 11:28:51 +0800 Message-Id: <20260521032854.103-3-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260521032854.103-1-kernel@airkyi.com> References: <20260521032854.103-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: NFzQ23lyTybaEIrf5VDCKo5q7qyGA3J4ItmG9BT55A0PbP6Zbp6YfmkU a62mNSe2VhfIL2EGmz/EYcYfP0Fih23NLZy0ddK3sw1r3D3ql8qq6hhlEpVV56IiIH2Efwe +HOmZZOmQVlui9dgeNrtq/LCpZ5d3YKdols+dbZadfmfzuPRKG/StR3zxW0/wYFEy5ROcXt 670q1rPIBCCSKPTxbryofv/beK4+hSSadoqJizU7TJn4sk2/qrVb+SSTbcNktmdVlw/JjtN Z9CIV1JEJiG/PzQxmrjTq3xJ7P4vBP1+eBIDlm9vKNjNjv3KWDzyOjP6GoaGbffBkqrLglf oJWArhXefMBCBUCDwZeSed2r2mUQA3lnUGopYZXYbEZLB7OOpan+u2+4B3HFPyizE8ZzgZz mPEmL4g8RdM6tjwxFaKbH1babpa7Xb46lJbZuFCSTaQqhbq4ltnvPJ426QOh3Jd44SMAy6w 9gxoWx7EfLwJM6Ff1TOLBocVpbKu+QmnicFA46qUU0tKUVjCJa6QxnrJ2rpcJ8PHnGCRIUv Z5UprkZ2Kjcb+BMW9Fir186swBZmx4iDWJHl4N4dOqXeXj54c6uyyf3apdKW3cqXWkOmiVb 6REKaR41fmMBzMCu49U905Eg2Jwu0hzk4WyhpGRQICBQ3AbnYd3W6Dpt0sGNxKqZP8IOcju /iED65KEH50Q9ot42Qkp/TxceMIRjneTGwFADpjItcz2bELslsZ+C8YmOoGaDTTnK8BDF3a 7oA9daYYS51G3Vj/QGkJnC0KAoqrL0z7AsCvp1p7++J96yhPgARBTgh4/dqRsfAgraWReHl 7ek+0d6L6K/aXCyhfL3Sjh8n2OMgZ4x2XBSKxuj3pw+0LpTR4UwvPPZ16LV9cVAQz/xPkDA Tkw4nPTPNWQgs7ukYhfsA2G5VI6MexhKBQ2Mu3h0n7M2R4OUKMQNrVBAviUMcM5rU03GL7A hwpEZRjEftHwnVz+6bb+59DgyY1lK2BV2KEFCWMKYl6vXcb9E1zXbEr8YQy580oaWX3rXgD WpFb1STmPMsbrMZSt5X2LwLATzV+o= X-QQ-XMRINFO: NS+P29fieYNwqS3WCnRCOn9D1NpZuCnCRA== 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 --- 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 1ed21a8713bf..f50283abed5f 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) -- 2.53.0