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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 C5AF0C55ABF for ; Tue, 4 Aug 2026 07:17:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1C5C210E894; Tue, 4 Aug 2026 07:17:00 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=airkyi.com header.i=@airkyi.com header.b="KQZJ5Pmh"; dkim-atps=neutral Received: from smtpbguseast1.qq.com (smtpbguseast1.qq.com [54.204.34.129]) by gabe.freedesktop.org (Postfix) with ESMTPS id F2EB410E894 for ; Tue, 4 Aug 2026 07:16:58 +0000 (UTC) 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: MLQK/Qc97rZToCLy7YyvU2GUPmDEesZtlthLO/0cYoLEHiCsKmdvMzBu 0EA2UYDpA2NPezIk/rE2VEn5x/XkG6RoVMcS+CgHMDo/0zP9zFFQqojUGOMM0CXQVW6Kr/4 yQxr9N+ce86ldtQz15fz/awxwOrvcS+1gSmm6dgIrn3w/dozVvLMz9uWIdWY5SWsxxJzXE9 J0mR6jSyMiL1/5vaMDgJ+0JycrZFm5QWCPWwXv+0X+wi/E/MvOrGfNHNnb42OxSSjnVrID6 6l995JDGhUdZzdBnOYMrJ9HqKuPCPc8M3pkX82wT+2AZkpawj4y4zXYvWNFttTe9DIsJ/oo SShN+lRTagwWV4HmGtOXRjHdtXgiMhgll00T4hQokZbqr5CH2xuq+0mcu8D6YgD8ugnPWV0 991415vR1SEF+aASP744gXaX2oI1i0r2CBkgEGUBETn3RQSkyhMiVqvwsmP9Qcv5iADo4sh NCt3vl4BUogQfmoI7ESIZTyg1HE3gwUOGRqGVWEEMZPt301aubj4woRNbLHcLRDu3LzXYPq /a1GDzU5i4iZK5nV+iJXvEidcXspbRX3FYSFO6u9KgxFV9mmG3hTuHwyExiXbtln3rEo+Wm a4Cd88FCjI4gu3IgvRnDYwHTBe5JqHxkMZvQ2Xeib4F1xCPuGWJZw/vhAU+t4NlvEoduON0 xXqN/zZanbeKMB4Fzopn+g3Y7AUpcK1KqID9O3XI5j0IgTIMk7GIhb/yLXhXqUAA6bBaAzZ rHmehOlvvxXHuIpvFw42sunSpiK5XyhtZJMe3Iyj/5Cxdt/1yLZcPy8eNfB5eBt9S8rmUyC o4lbJOM5fA/Io25wbtaMm/MvPqXS49ACDYrGQsWWlTYGFjf1R5WKSllBN2PTXLGlf97udi0 2lqhUQWtnFyAkQuUjpEDqIW975jXJ63ifXro4YeyYldyQgha1Wpnu1LdjAlojTSi8EU8fNI OmmbK2qYDh5+Pcacwjt0c56BibyZBwBKTvBn4Bf7D+IoQFkmucupgjzot0v97dDlF6SZdJ4 fvTFtf6Y8UCghLSsRn X-QQ-XMRINFO: OD9hHCdaPRBwH5bRRRw8tsiH4UAatJqXfg== X-QQ-RECHKSPAM: 0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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