From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbg151.qq.com (smtpbg151.qq.com [18.169.211.239]) (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 765322F7EE1 for ; Mon, 8 Jun 2026 07:09:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=18.169.211.239 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780902546; cv=none; b=eHpvNQ3ZXaPq3JJV0/+KbGhIj1S/yZzh3s7nuEuOk53xa8D20X1f+yDXxz+f5cCz8wBpxklk3noivjzYqkPQst/EJeeGnIT07DVUDmqaYVDJCXyeEliMm8itQrFONKd3M5X6giMtyxD4kb7FU6F7XsA98Am03ez4LBx3fnNf2JA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780902546; c=relaxed/simple; bh=Yy9o/swbrVekitef40RTFuev7VtZwX7+rm6FYxXw3QU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=InVtU9/RcJ151fG6FmVIjqaxaPDYV+07q1txvxNe3+qYPlkk5ceoduYrNGXSU0AfvvGZC737I+VbP6R86YZkTgKvRsxzoPDAet/Dej6TXvXmRYZchp8V9R62K7FY/r9mWh5YXwzmAfrMwNo6d6C/kp/bkO/M/XcErJUUukAjSKI= 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=osLzWiKU; arc=none smtp.client-ip=18.169.211.239 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="osLzWiKU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1780902509; bh=6tLWoBW2pFlmOerPRepxyKMqbCkBEey+ItacdvxIb0w=; h=From:To:Subject:Date:Message-Id; b=osLzWiKUyDgPN8KNr2+g6/NVVoUOkd85RKXmS9m8OioSTDkNfi5R6iAgWCNTTn3Yf yowsSmUUpdatpSNRFkL+LtBuxley89DJlWmrnp7zfqixWImon0iwYu/vgz1i8+m7wv 8WJrmB/W0JFCrqz0TrOFIDbZWAjENoKdmnP1Teho= X-QQ-mid: esmtpsz10t1780902508t7749e501 X-QQ-Originating-IP: 0Qz1Oiv8vXDmyy1J7m5t4cou6ezju/IsoBdbZ45NzL0= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 08 Jun 2026 15:08:22 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 5642729304613398450 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: Nicolas Frattaroli , Sebastian Reichel , 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: Mon, 8 Jun 2026 15:08:02 +0800 Message-Id: <20260608070805.88-3-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260608070805.88-1-kernel@airkyi.com> References: <20260608070805.88-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: OO2wLqYBHUeBjDE4iO6iyYK0/2m4Vg5YxDKTBKf7Gs8um8FTFSzbXBFK zf7xI687z59ZE3hHj7f+sI22IMtt3jWK+yy3Lwuw21rBBLF7JCmhQDn5rZxIVn42STbvB56 5MrK9xQ5ZZ6st1EofBHtkKEmqEj4H8IuoEq3Apx7LeMRh9nt8zfXCRdd7AfFxBexg+F8c2S Z3de3IXwL2/k1R8+5yW3LKCRpx93myJe0h/Wj2LCL9KtBoB8RaCdcW+pvNPzfjFaFZxYeOo F0YykDpvd/eUMpZFoDS3YtNpQeJ5X1Ha7W5PFOR40TqfY5TJG0siem9BxbEgAACUoA+F/ii M5dYTgnxbvh8AKJcYhAd98kfRtKaLLfNpnKktTGGmVAkctjeIiYldLDpXWcVohqGKV7ikhC noUcmNGWCYcP4/cNk7NXsrRgLhQALqVyEWNjgFQL1Vw2Ssj8YAdPVwpXacB7BIN2674N8i3 vNnVVpO9euiSRarmGYQpK8Zfb5ARJkAvgv6KOlfDfEpvLHdPcO+6S1CqdD8rI7Lx2mJZuUP Fq9ktnR2WGxEtaSMZehM67gsSNDnAbQ5cLoTwKurxpllt3nfCSXznima2XjTyAXEUOjYq7S QD2IdOqo7051BQ0Uc8zg+7NsznTziEfXU87zV9Pfn3V/B4cIvT8dhNm5XWeAklGXUNxzXvf mlwhgPOpyhFD3FGWL/6X1LkL0PwqqyGDsihwY0J25llwKc07NrJ2AiefDf+JBJAN8pfitHp wxLjBYArP/egvxkqXNpxtCq7y1EVTsOgLrHNcLxNl2JTCvg0Aw3cSASIKDeqlH3GojpvN8Z b7zbGiTGvpghLS42bBHbAFPKOuy+KZO8gKTH9Lh7bxEpMPKeJX4SoYjd3JviaLjWcQpYkWg AEoS0Bd/YSNx28iYABtOipRSVKdwRuuABIUdrgHsVvvY/3wLKBPpVbhs5MOLmZtvUG4oNsf z6eBpVsA5XEqZziINtF/k0EnD+yDwVaQd9cn5reoECTtuxh0007a2LbcvLREv7FeJKnwXPf jFCaXFj0EF1BUc3D700fqSfZ8IZzk= X-QQ-XMRINFO: OD9hHCdaPRBwH5bRRRw8tsiH4UAatJqXfg== 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 --- 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) -- 2.54.0