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 AF2983DB623 for ; Mon, 27 Jul 2026 06:45:00 +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=1785134704; cv=none; b=Kaxq2VCaeiGnQJgBE2GTk6Neeu5zc1JNAv7dh/ihM/IuiuQiRpbaITvcgppL3i8kYpjAWQE/M+EBDv49l7AkzpUlEnNl9Q4OubGm3XV+RAlgFp2Ai4oPVDOCvVTpdOmViM6tpjEkVpKepyEdJC+J4a0FKgmse6DdAhI6mV72394= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785134704; c=relaxed/simple; bh=qKfQNlkfq/KM9oQGuS1GCb5y4ugvg1maTB+9PMhEEiY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=pDNRDlaMGE3i4qNfgP6Iz4jQYAty2HBEIgrLqsAf92r+tMWbOEk/mjB8nKe9OoDpXug1sKleQhuF+WiTqW5ku323/hTeAYtmWR+XGW4ie1zmr4XLh8vRC0oi3zhAU8HKzs3JkZAuqhxhOZcMImIimFJy1sxK5JwmHPL8YjUb53o= 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=r/TktP5L; 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="r/TktP5L" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785134680; bh=0RTzPafltaazrRSyLxjVEGPsM2NQMO3dAbcjHX9A5Js=; h=From:To:Subject:Date:Message-Id; b=r/TktP5Ld+WWTvzDRiuXCPNLWf+JdR6QK0wp/0dnFL9CQrdAdMTd6Kw8BeMozhRwh DSPdNw4FyJ0StM/GmzXUJNYOKksRNa8Kj+aEiAySi8TRQL7Opc6LF+rThj45igCHCC R0IQgQwGclgi8lU4p5ms73quIbtq62Xb1blQHJQA= X-QQ-mid: esmtpgz10t1785134678t321df366 X-QQ-Originating-IP: FIo2NFa+CPIcguk3dsFKhKkZ+lavMf+1Wwj3ZSwK65s= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 27 Jul 2026 14:44:35 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8511555732185011648 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 v4 2/5] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Mon, 27 Jul 2026 14:44:05 +0800 Message-Id: <20260727064408.101-3-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260727064408.101-1-kernel@airkyi.com> References: <20260727064408.101-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpgz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: OaUS/vBL36PcEzQO6Z6f+WAeEsVjZiLXs7RDe4joiv+TM0eZk3E6Cku3 gnwDZgubJ0y36h2Oa6tEttxGAAWUP98WRmMM+UauI7SvzybCFfU2oZyub/nZM8CXCiWQLCN h/OasWtCXs2VOZC5U/n4BXHUyUuvGSJZ5xeNilRg0bMqfVHY8dLK0H4wqKwGUmXlw+s4wyL ZcMzKNMpuBXeDxcG0FiJOnLPRpc0cuX4S+yDkkshkCoGei6+rH/reBLH/1jkfGRTtlul9HA Bn0UWEcjsuOCobSRMhhxq9YsZ+hrzq+loZWJBngC+KTpj5NgM98n/YhK7LQFpY64XjYSzZP GtV+QVwmbr2Jv2VKFhFj+NLXiWVjduKSiKZp9Kq0r5v5TAfGMziV6ZQUoAmdLz+IWqf9ZKw +ecrz5BNsuXtMefwPF9UiOhApNL1A1+86Vmb+4vcSRIl+IdNnvcl/x73jhS/gqXPQYeB7rN Q430MNteqXizFtuM+NirYerrJ6A8YevdwlCNGDH96bjFmOgPX7C1xdeSwHn1CIBGKemz06f qplyl+LWL+NvszCIT7BfOMp2mYEVXEqdqeT7dJR7JLuGFwzgw069tkhHszEZim0CChbBlDw xngE+570a41n4lTWEKs/hZWxaLTqqgC4YgzovGPF45FiuytdRZbU1UN0z3r7HQ96jPwtCwK MZqpU4QHs6UBM03109B6s1CW00R7UUBktev1LqBMU+wLYSR4AVUL3CjpQ+vlqYP9HSt0sx2 MKACiUYPW75McHYIvZQ/bYg/EtxqI/X25XOGBVTr6UQabm6sTkHf+znWqkUkVjdocOhwtCI V04E5p/vAkFKwE5w1Ny5MJE4S1aFXa63FT1IJ/2fqRzFPGb7XP2rK62CJ5b72qswKTRTkLA Qe/68jhhJM4R9zekJx/2937sGAyh3WBsyA6OFRK7jKpPgexb/uIbyz7NM+U8HrTgcygE2Eg WaeYcj34QpN/ynkiU+9we7Oy2Ti3oCfoUr+/tCwPZwbTF1r4iVwgHGRdQG+N3+XyNqPfilL sFhhga4J2OTLPrOOSSBgI+Q+BEkHaRImqhG8tb+gX0Zcu6sR6D X-QQ-XMRINFO: MPJ6Tf5t3I/ylTmHUqvI8+Wpn+Gzalws3A== 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 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