From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgau1.qq.com (smtpbgau1.qq.com [54.206.16.166]) (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 F2B95364940 for ; Thu, 30 Jul 2026 01:35:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.206.16.166 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785375346; cv=none; b=QrPutwZh49q4iUhEpfb0P+6L5x5cUGUImtczwR86Q8qvAEBUIvhslS2UcyV+5Ke9sdChCsRV3kzDqBN74ZU/Mku4KfL2+d8d1IGesSyLFnGeZ5Bs58Bvy1sHxdiYiHlbfqwIHapV4jDI5v/S2OZIbWWf/4IYNJLHDyJirqbv5HY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785375346; c=relaxed/simple; bh=2BXqf+DtbBJUj7d33IhbwdjOh0nAQLGEy5bHy+Hqw1s=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=cAU0SRONNiJvTDL2OXZ7+DbsbReVvvuGmfB7QHz+7MF6RIaF1KEReC+o6zyY+0QVa6lHhQ0YQedrB8SKRi7YhN8bC7O59vIvuRXt5hRsqUtId4n9EFeInrsAAZh/YmlOUipStmceDibckiqcLd74mp7V4tFg6O4gETppuIGTUWM= 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=krMXun4/; arc=none smtp.client-ip=54.206.16.166 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="krMXun4/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785375261; bh=34S38J64YM+H+KpfDbN51lI/VLTj/+Nb2w4k8BEGW5Q=; h=From:To:Subject:Date:Message-Id; b=krMXun4/XqS2XC6Hl3jRL/sTxBKRpP1LN+wAV3kdtfdMT0u3Ag9ueV+jdm1dWaBI/ oeFs7bq5vE+uVbOD5ZMFW2g1zTQtGZfodEkDms62QyVTuVA1fkJHDyfhtyRHAepOZ9 PPsXMNnQG94A8HNPdgW/AoQe4R161JT9JLta1qGk= X-QQ-mid: esmtpgz16t1785375260tc42de64d X-QQ-Originating-IP: h2Thze7d4q0oJMo7Urb9mZmDujzRNU31S/lY1AZVkmM= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 30 Jul 2026 09:34:16 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 6195067875191386015 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 v5 3/6] drm/bridge: aux: Add drm_aux_bridge_register_from_node() Date: Thu, 30 Jul 2026 09:33:46 +0800 Message-Id: <20260730013349.51-4-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260730013349.51-1-kernel@airkyi.com> References: <20260730013349.51-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpgz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: OZ6Go/7Bj7284kWu0sLCEcTHrj19c5IVbygt/k8x2dtTUP4S9Mkb8ES7 sXy7ddyTtEx+DD2eFShH2wQcjbfgrqysNTqltqycvNZpyLS3ojIv8ZdXygja8Wtv/LgmW7K O7NFhvQLhWaYV7lM48sXnO8tWMzw6bw6JkxADnuYlMrb9/DXqFTqppTPdw/1UWzYoLaZBTz MmTer2Y1S15gOqJ9a1HecltyqQPuBHRm+7NK9jxa46D1nfq2R31e3V/6A6zKLtRuEl4Gsf/ buZ5iecrNy2ZhW8xgVZxBi9W0HorwZKzeKEV/kZKA/Mx1N3HWCAgW3BL+W1tJ2z4oKU5tjo 1Rsafi8CC6Pvng+QeYiOEiOEnDEm4Scz0WMu2BKY0JNSRG9JB7MbQP+7U9NqjC6vQi2q6Bs ZB++r+fQ2/ofLcSn8KH8jTBNCbwwYQpSwgby3OPz0ro9HV7ahojwTZSRZ3rGXfmW8jZHf/2 Z4Gm1al/5W6/mNCW1jVPWnilCI5sPU+ijlRbo1d1lnueA6JYt0s5ypffd/EyX9Ewrj8a5f5 HxDsoONFGLwrIhKhLGdwhFgQjAj28uU0/0G5SDwqtvrTSTYZTEZJNoi5zhbullVKhrmf+e0 13hA8gvaYb0NVZgK1WCOO/MEcjbx2iTcnM/TkfIXU2KnUES4e9SLRh+ygzavqcv0hcxCOEM VhNgClFZ/K64UVaKlA0mDK5kYATRhf1MezZiDOK18dh36O2ub/si1T1RBa/l3EE8h05d9Au I8aedEyRmhU28Ei1gFhifVjIz2IjXo0PNd4+Qvkfh6Qj24eqZK7ZWVqy5z6myMIWzU+eZay ltv5RvYkoMvp9aCemxJkgdbdZ5HLV4pukmEfRn3oKK0TzaFHkjvXwGaQZMInVI801NNKBjS 1f77xGUx8fe8mrCplhqNHcV35vU0vUPTck6fvl73hsdkCTFnfB7O+H6eU7gQkvsQ83jEs5d qE8SeAT8fjv+bX1EfY81yaP+C4JE2MzAuCI8qfYFaEtohc03JrutUj/dG0RDTmji82B9gQg hT9ntAPA== X-QQ-XMRINFO: NyFYKkN4Ny6FuXrnB5Ye7Aabb3ujjtK+gg== 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