From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2CE3CCD4F3D for ; Thu, 21 May 2026 03:30:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=NA3zWcCN+LNcIiy4LfRk+qi3M7FDJHrSG6hmfEKlJsw=; b=dzpswMR67K9oCfLpsPGhVGFww4 TrmB7CylDA0tCVVmLLM5xFeZjKQ/M+jkwARsu0F13lOk7gDsVL9BIUiS9U1o1OCLydV/Whs1euXwB 2f3VLEEDbceY7uqQXRT0p0V84SoSGjfy2VxaJuTPCk9jSnr9CW8pUNv0cCRatJHXdB8Hq3igRJZb8 uls0NxTs4NlmzkoQnds49wFnefYeD68N39zGQhCJ6X/JOlKRDvSfy/w6c5kzeAgzxHlipHud4JYI9 PE0uDU8u02x7ser/Rythqx2Os3GAR6DEl+dBa1IAfP6cSs79OOFN4gI8XK+UAgXIjImqrrRLwnb8I noKH9n6Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPu6p-00000006Y50-3ghi; Thu, 21 May 2026 03:30:07 +0000 Received: from bg5.exmail.qq.com ([43.154.155.102]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPu6n-00000006Y2C-18P5; Thu, 21 May 2026 03:30:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1779334174; bh=NA3zWcCN+LNcIiy4LfRk+qi3M7FDJHrSG6hmfEKlJsw=; h=From:To:Subject:Date:Message-Id; b=s7NaJMmVNkOOKuaFFBiaELK5QcGReUyg2KKLtinfkqzsOl57v+i5gd7s89Kc/Zy34 OBFL9Za7sLJSPuZqoJapzC1+nu12ZXpw5kgCV3KuhZBZLBJaBEARN5Rbh5BuSNtJjf 8WO7pnCAsmSeKw+2nU6rg2/wc7QmCHRTrrNz2B+c= 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: OMYc6F8vKQbcTOeiZoFxE/+nlnG0zxtY64yCtZgU6kb0COyRGoeqJ9ti NY7vMeikC7xNXadhL6vltW9nhvH5ueTQ4Ky42w1iFhUGYxGxpmr+lhth1gCqkcTmnJ8ye3R 5Q7iox62EeZz6hPg4ZUJv49XJOZMWxsbBneLCXsF7wBMx1ihJdwCc5h2VTg+EiOM9MduEf4 DxAU46HlHT/TA9uL+HOWXwb4w02nrl7IraLT4mJ1Q/NnBvjiu9N2TQwJQDVpipBQKGPW/lK LHNohXHyFC7xzwFEzb5C49gbRdVIO3g/jRvgXFGMCU3r2rDHofX2/qIdSy8uoIcFJ5wAGqx +/x4J9M11hbWnhrsuwJumZVwnbl3NJvQEggNFQR81T1X03Mu7QaW0PavDuJL6Uhf/q7SRMB i7Eg5V0Q4ANetBR55nE/gfBU4Aau5BS38X2nYstZh5XAZlb7iiof/Wha7xULx0coHIjxcvb 7vKvg0Jx2rxab+TErnwnmRlrwhStQNmV+Snp7318aKqmw6WkUtiXEaQjV8zkTOxy3B3WmDZ ZUhgRQBVeByVF+uom/rzTAbxWJqUIE6+ubpz9euG94qiJVX8/P6U7kGb+rp+V/zvTDn8pCP s1RJIF932NtBoBZ2a6t5d05UETHSrUb5pCWgZ7jjhGQxDoLW7+ehMv9NVI7WRl996Ig8HPQ ngRjhsx3MbgHGLv94PxHh83Fpvf9Zv/UcFp3Lhop1hAZa85Pvf4JS4kEnOPmBDR5dZcBlpX Afm2U1BeWmAQgh0y+qcqQDaK5lw8s5wP+Hs6PHR0yJK5K+zdMegf1xnc1cXGv80bCpa6vUA iugLFFUOtN+M0Tgx9e6CgLDZ+M6CgYl6dhVx25tvwvLAexvL03ksmUduNogEtmPXRC/VzJj EVHfQwCSIPFz0JOpe3a7MzKPwitC8yqoAPR2MZUm6yV584PD9B9kDC3HEhdwb1riLtIXUUS b3WdDVMJQA63LzdsVSDnWaEbhnuCQ0y0NcP9AisHwC6zRdZupCtXtAUYxAAs4Uo+6j+maGp Zk0rdjfLRU5Zd0dyWx2QxgOWhXCEo= 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-20260520_203005_662586_2C04F9CF X-CRM114-Status: GOOD ( 13.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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