From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast3.qq.com (smtpbguseast3.qq.com [54.243.244.52]) (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 EBD0741E6A7 for ; Tue, 4 Aug 2026 07:08:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.243.244.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785827312; cv=none; b=SfRuJ58m2dfdoUdcE8pyThs/OaTXBK3q04Wm61phFsGFUs0Jek3+C1QNw/4NWamubKaynkv3wxe4hS4dctSp7GS5sCFOE6TAPhH4ghqd5RR8Jwg7nCjIaDRBfJJ6SEogkch5iFCdZd3FomKe/wqxWMNYnTf6cebMQZiaxlZZUXY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785827312; c=relaxed/simple; bh=7KWk+SgqIJbF+ILkzsp3b5+6vrk/Jjm5trU6focfT20=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=F5BRlM+/CtxfxmJNhm1YIXuvTAX/NZYnluxufObxV2dFb6ZmefDooxlhFrkedhvpwXAFwFy/lmV1a2v8qTD6AHhM1OuZ13URDhP4pETjt3hbkeIMc6AmgFRJoaVZLuUtVhPIITMCN2ZJAu4GoIyZd8WW/Yxf1G790Nvzkdn9Ies= 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=KQZJ5Pmh; arc=none smtp.client-ip=54.243.244.52 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="KQZJ5Pmh" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785827293; bh=cCH7wGS/DSGdpdibtHkqUSVfV1DZbBvdNwFnheuEGLk=; h=From:To:Subject:Date:Message-Id; b=KQZJ5Pmh0eSxyCjA9X/csEPDsMMPZTn6tr8++cHIbUj4gXUS7IkKSdN5dx3rEkChU XRUWUmUtlaMk7QIXJ3xlz30xuU3sadWdIDIWTY/rueNYJ6+Kn92oq13++TL1k0bGWR p2hTn0XdqrqzNV7MUEnivgokqIIYAzwJDXm5czDk= X-QQ-mid: esmtpsz19t1785827291t2f650366 X-QQ-Originating-IP: lD7WTbZHcHLknq1JRmfmpGolqvDJokYAqkLsmcwlCn0= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 04 Aug 2026 15:08:08 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 11542142582255875228 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 v6 4/7] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Tue, 4 Aug 2026 15:07:27 +0800 Message-Id: <20260804070730.68-5-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260804070730.68-1-kernel@airkyi.com> References: <20260804070730.68-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MWdgP8+gtiFR4HAk9GTLLaO9+YbjZgXaKyVmxQY5wQceLFbHKV1Yeve0 lsPVz6boWnJuQUaE+YVWIWi/U8uoglx+Koag37oXXpYFRkUAVdRSG2c8loTIrq/c5101Le/ D1wru/NojkHA8M+rKZmHATSWROG+xxcTsu4HNWk4bvi/qbrwOfqooRtk+/Va9T3E6myzYhb WdVCXL4pQaYrWy5fxI2JmFrllpJhyduewBteYzmr+U2MA1V92U51Kurn9RDsW7V1kHwmIw2 EGzCiEUo6zSXQFa+xlzkzEgWgRuxdYfadc+7fF1PgH2WnAfpKnKVUOp6IrIx3m4/JaNiT6y JRZE3q1Z9O9Za8JE1Ey9+fvC9ZUddyaD7Ajumc563AON5hVcx+cg0cc2TCEYauc8axPbc3C DGbDy9ptj0Efv0Dt5i93By4p23K2HBwSsSWbPsvIVv1eDrIvsa+euEbzKx2dUW4DzZWBJFl bExH8PM/3oFDrWGq0U4ANR6VVEA7I2d8jknJGavBQNhW6KefLmUGJG7XyaHXILX5xfzKXxM Xt9yfgRmXBLZaRW8MXaZYOoyxEiZu0B/ZjDpRtk0oW95G951lJlqEJ5ILqPyA4Lc3juBsLg Kidafc32lE3iuAlIMgsTmtuQxiIyF3+oa4GnUFKLLkT0IhS2jrBi0Icl1bCiwYNBR5BAE16 asIb6/nfHzuPmOgaTFNHxP74PTS8a+99t7K7L+O7Ou72rcZHig08M/UEW3/g4TDrLvRTS1Q 7r6rtAXyavHPyk7b/ROiT8+l2PZqm4EkCtPC6LpkVPrjYu+kty49qbjsA1AowU00mIB9hdo JN28Z4RHAYnt/XKSQhC86BbdAXAdt4hn6CJYcOYPfZru/4vlqVtxwNtr8KllzYBpgH8pXrk 8bripQ/M/TpeWFMgnM1Q+F1UMW9LomQF+JUSCEYFSKayuGHFHeBl2d1HRZT1BnqC6Wgw1Hp iNlAnGgRg/IEZxu4dn4g1hyKCBcS/9MDFv/t3B8AZ1eC4BPfhHHzZlAFoTTkTivyD2kAkcL MhGwLxfTA7aQ/uFItf X-QQ-XMRINFO: Mp0Kj//9VHAxzExpfF+O8yhSrljjwrznVg== 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