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(unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 396d58c6e; Fri, 3 Apr 2026 15:00:36 +0800 (GMT+08:00) From: Damon Ding To: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, wens@kernel.org, samuel@sholland.org, luca.ceresoli@bootlin.com Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, victor.liu@nxp.com, dmitry.baryshkov@oss.qualcomm.com, shengjiu.wang@nxp.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Damon Ding Subject: [PATCH v1 1/4] drm/bridge: dw-hdmi: Pass bridge attach flags for dw_hdmi_bind() Date: Fri, 3 Apr 2026 15:00:29 +0800 Message-Id: <20260403070032.447102-2-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260403070032.447102-1-damon.ding@rock-chips.com> References: <20260403070032.447102-1-damon.ding@rock-chips.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-HM-Tid: 0a9d5224cc9f03a3kunm1d6b6bc811de6a X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGRlLHVZJGUIaGklMT0tOHh5WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=OlOoyejoOkXGTU0c6apybdH7VloZYuymy3nY8UshMSA/uZrhmc5R0e/cHRqTMPPT4ts1ZuQHeZtwbl5PrhrJw/gbb17xqSbn8A58hlp6/36pSUmFjsTJo5DU0GsPN2VZxUpglrz+Vek1RK0D28zCnasPVmCr9eMpxEtc1kwl/7E=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=McMc5vAPh2G/cVqrH2p4ek7fEhv61YfNK/RtiS2LLiY=; h=date:mime-version:subject:message-id:from; X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= For Rockchip and Allwinner platforms, the HDMI encoder attaches the dw-hdmi bridge via dw_hdmi_bind(). This additional bridge attach flag serves as preparation for the Rockchip dw-hdmi driver to support the bridge-connector framework. Signed-off-by: Damon Ding --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 5 +++-- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 2 +- drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 2 +- include/drm/bridge/dw_hdmi.h | 4 +++- 4 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index ada45e8b3e2c..dd50dda3a4f5 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -3619,7 +3619,8 @@ EXPORT_SYMBOL_GPL(dw_hdmi_remove); */ struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder, - const struct dw_hdmi_plat_data *plat_data) + const struct dw_hdmi_plat_data *plat_data, + enum drm_bridge_attach_flags flags) { struct dw_hdmi *hdmi; int ret; @@ -3628,7 +3629,7 @@ struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, if (IS_ERR(hdmi)) return hdmi; - ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0); + ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, flags); if (ret) { dw_hdmi_remove(hdmi); return ERR_PTR(ret); diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 0dc1eb5d2ae3..21b141b7cb9c 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -608,7 +608,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, platform_set_drvdata(pdev, hdmi); - hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data); + hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data, 0); /* * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c index 96532709c2a7..04173335f7e7 100644 --- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c +++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c @@ -188,7 +188,7 @@ static int sun8i_dw_hdmi_bind(struct device *dev, struct device *master, platform_set_drvdata(pdev, hdmi); - hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data); + hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data, 0); /* * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index 8500dd4f99d8..e789fb451ef2 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -6,6 +6,7 @@ #ifndef __DW_HDMI__ #define __DW_HDMI__ +#include #include struct drm_display_info; @@ -182,7 +183,8 @@ void dw_hdmi_remove(struct dw_hdmi *hdmi); void dw_hdmi_unbind(struct dw_hdmi *hdmi); struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder, - const struct dw_hdmi_plat_data *plat_data); + const struct dw_hdmi_plat_data *plat_data, + enum drm_bridge_attach_flags flags); void dw_hdmi_resume(struct dw_hdmi *hdmi); From patchwork Fri Apr 3 07:00:30 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damon Ding X-Patchwork-Id: 1986 Return-Path: X-Original-To: noreply@patchwork.local Delivered-To: noreply@patchwork.local Received: from sto.lore.kernel.org (sto.lore.kernel.org [172.232.135.74]) by mxe881.netcup.net (Postfix) with ESMTPS id C0BE01C008C for ; 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(unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 396d58c7b; Fri, 3 Apr 2026 15:00:38 +0800 (GMT+08:00) From: Damon Ding To: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, wens@kernel.org, samuel@sholland.org, luca.ceresoli@bootlin.com Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, victor.liu@nxp.com, dmitry.baryshkov@oss.qualcomm.com, shengjiu.wang@nxp.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Damon Ding Subject: [PATCH v1 2/4] drm/bridge: dw-hdmi: Allow &dw_hdmi_plat_data.output_port = 0 without DRM_BRIDGE_ATTACH_NO_CONNECTOR Date: Fri, 3 Apr 2026 15:00:30 +0800 Message-Id: <20260403070032.447102-3-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260403070032.447102-1-damon.ding@rock-chips.com> References: <20260403070032.447102-1-damon.ding@rock-chips.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-HM-Tid: 0a9d5224d3e103a3kunm1d6b6bc811de8c X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGh4eHVZDSBpJSE8YT09PSkhWFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=a3czWbbNA5bRxbuC+yj8HGXru+0VhED5jHr8yHMEfFFY6t7unzRDodHsLfmDyeRad9b/QdfUJzGJ3Smi7907Aro4Xl9VnWC2+x1KmIVJCb0ntGB2hpB9P/2tQukCKhE58S7ylyU2NlUI9MJ1OAzPunQBSCUK+B3nNmdoWub9CRQ=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=7YFq+k4oWEJWI7D226Mei8EZK2WhHcRNVgZytreS/T0=; h=date:mime-version:subject:message-id:from; X-Rspamd-Server: rspamd-worker-8404 X-Spamd-Result: default: False [-4.66 / 15.00]; BAYES_HAM(-5.50)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; ARC_ALLOW(-1.00)[subspace.kernel.org:s=arc-20240116:i=1]; DMARC_POLICY_ALLOW(-0.50)[rock-chips.com,none]; R_MISSING_CHARSET(0.50)[]; R_SPF_ALLOW(-0.20)[+ip4:172.232.135.74]; R_DKIM_ALLOW(-0.20)[rock-chips.com:s=default]; MAILLIST(-0.15)[generic]; MIME_GOOD(-0.10)[text/plain]; HAS_LIST_UNSUB(-0.01)[]; PRECEDENCE_BULK(0.00)[]; TAGGED_RCPT(0.00)[]; RCPT_COUNT_TWELVE(0.00)[26]; FREEMAIL_CC(0.00)[ideasonboard.com,kwiboo.se,gmail.com,nxp.com,oss.qualcomm.com,lists.freedesktop.org,vger.kernel.org,lists.infradead.org,lists.linux.dev,rock-chips.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_HAS_DN(0.00)[]; FROM_NEQ_ENVFROM(0.00)[damon.ding@rock-chips.com,linux-sunxi@lists.linux.dev]; FORGED_SENDER_MAILLIST(0.00)[]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; FREEMAIL_TO(0.00)[intel.com,linaro.org,kernel.org,linux.intel.com,suse.de,gmail.com,ffwll.ch,rock-chips.com,sntech.de,sholland.org,bootlin.com]; DKIM_TRACE(0.00)[rock-chips.com:+]; RCVD_COUNT_FIVE(0.00)[5]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:63949, ipnet:172.232.128.0/19, country:SG]; RCVD_TLS_LAST(0.00)[]; TAGGED_FROM(0.00)[bounces-22781-noreply=patchwork.local]; TO_DN_SOME(0.00)[] X-Rspamd-Queue-Id: C0BE01C008C X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= In the previous commit, Luca split the dw-hdmi attach process into two cases: A. hdmi->plat_data->output_port = 0: the HDMI output (port@1) in device tree is not used B. hdmi->plat_data->output_port = 1: the HDMI output (port@1) is parsed to find the next bridge For Rockchip, many older platforms (RK3288, RK3399, etc.) only support case A by default. They can support DRM_BRIDGE_ATTACH_NO_CONNECTOR flag after adapting to the bridge connector helper. Relax this constraint in preparation for Rockchip dw-hdmi bridge-connector adaptation. Link: https://lore.kernel.org/all/20260402-drm-lcdif-dbanc-v3-6-27cd247a0847@bootlin.com/ Signed-off-by: Damon Ding --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index dd50dda3a4f5..20b2f9e145b0 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2912,9 +2912,8 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge, { struct dw_hdmi *hdmi = bridge->driver_private; - /* DRM_BRIDGE_ATTACH_NO_CONNECTOR requires a remote-endpoint to the next bridge */ - if (WARN_ON((flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) && !hdmi->plat_data->output_port)) - return -EINVAL; + if ((flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) && !hdmi->plat_data->output_port) + return 0; if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { struct device_node *remote __free(device_node) = From patchwork Fri Apr 3 07:00:31 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damon Ding X-Patchwork-Id: 1988 Return-Path: X-Original-To: noreply@patchwork.local Delivered-To: noreply@patchwork.local Received: from tor.lore.kernel.org (tor.lore.kernel.org [172.105.105.114]) by mxe881.netcup.net (Postfix) with ESMTPS id C9EA21C008C for ; Fri, 3 Apr 2026 09:02:55 +0200 (CEST) Authentication-Results: mxe881; dkim=pass header.d=rock-chips.com; spf=pass (sender IP is 172.105.105.114) smtp.mailfrom=linux-sunxi+bounces-22782-noreply=patchwork.local@lists.linux.dev smtp.helo=tor.lore.kernel.org Received-SPF: pass (mxe881: domain of lists.linux.dev designates 172.105.105.114 as permitted sender) client-ip=172.105.105.114; envelope-from=linux-sunxi+bounces-22782-noreply=patchwork.local@lists.linux.dev; helo=tor.lore.kernel.org; Received: from smtp.subspace.kernel.org (conduit.subspace.kernel.org [100.90.174.1]) by tor.lore.kernel.org (Postfix) with ESMTP id E5F1330604D1 for ; Fri, 3 Apr 2026 07:01:00 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id D775333AD85; Fri, 3 Apr 2026 07:00:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b="MTggQTmp" X-Original-To: linux-sunxi@lists.linux.dev Received: from mail-m49214.qiye.163.com (mail-m49214.qiye.163.com [45.254.49.214]) (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 BB777378D63 for ; Fri, 3 Apr 2026 07:00:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.214 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775199652; cv=none; b=lqXybLSW6dV/G9w8GTuhSA3yyePcLAd95caBrPPn9l1m9Vnaza/4q9BR3HAtAQ+F8/3jRg1yXkobV0rQmNhhih5udBnFBQX0GpX+DnH2qGaLU9hHhQDSGc66oqXO7fCZJZO+XjquiyIWYizcoAzbe9BP8LlN30f1923MLuyHcVQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775199652; c=relaxed/simple; bh=8ri0OPoY/KW3G5nM4FSVP2/vHev0+96L0cNC21OcTwc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=RXCaFwranUDXEHJ8S5JFw+v7f8Ww89wP8KKz+d8a7EjIoj+AOcpSePqWVaPklPEsmwnQJhpcrHAROL7ELcYbGJX4H0i5UFia2NJgzbvDRRqcCgMrnuEW0WjDiB6v1OYl0S+JFuP0XnpxQ7eOn0H/nsg9XnWYZVju/inkFqfuTjA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com; spf=pass smtp.mailfrom=rock-chips.com; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b=MTggQTmp; arc=none smtp.client-ip=45.254.49.214 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rock-chips.com Received: from zyb-HP-ProDesk-680-G2-MT.. (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 396d58c8f; Fri, 3 Apr 2026 15:00:40 +0800 (GMT+08:00) From: Damon Ding To: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, wens@kernel.org, samuel@sholland.org, luca.ceresoli@bootlin.com Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, victor.liu@nxp.com, dmitry.baryshkov@oss.qualcomm.com, shengjiu.wang@nxp.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Damon Ding Subject: [PATCH v1 3/4] drm/rockchip: dw_hdmi: Apply DRM_BRIDGE_ATTACH_NO_CONNECTOR and the bridge-connector Date: Fri, 3 Apr 2026 15:00:31 +0800 Message-Id: <20260403070032.447102-4-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260403070032.447102-1-damon.ding@rock-chips.com> References: <20260403070032.447102-1-damon.ding@rock-chips.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-HM-Tid: 0a9d5224db2703a3kunm1d6b6bc811deb5 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQx4ZGlZJSR1LQx5KSUpOHUlWFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=MTggQTmpvpDAkUCTK+phVdqDF0DwSlKrX4o0Bg/D6d8/YgiJQvd2U4TtW6aulksm8kWQCkkqT/Ro3s7iM9nTfEtoe5vhyLxHKXrEjMWzebV5O55UTD9Pdo/33xyT4OzM8T64sJq1OVNcHA+xnQTvFkBOxlhy0fryPFt2AjdYZDk=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=sFB8BBIFFL7jpCc3yoYdeIALzzlxyXt+AtPHpod/PGU=; h=date:mime-version:subject:message-id:from; X-Rspamd-Server: rspamd-worker-8404 X-Spamd-Result: default: False [-4.66 / 15.00]; BAYES_HAM(-5.50)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; ARC_ALLOW(-1.00)[subspace.kernel.org:s=arc-20240116:i=1]; DMARC_POLICY_ALLOW(-0.50)[rock-chips.com,none]; R_MISSING_CHARSET(0.50)[]; R_SPF_ALLOW(-0.20)[+ip4:172.105.105.114]; R_DKIM_ALLOW(-0.20)[rock-chips.com:s=default]; MAILLIST(-0.15)[generic]; MIME_GOOD(-0.10)[text/plain]; HAS_LIST_UNSUB(-0.01)[]; PRECEDENCE_BULK(0.00)[]; TAGGED_RCPT(0.00)[]; RCPT_COUNT_TWELVE(0.00)[26]; FREEMAIL_CC(0.00)[ideasonboard.com,kwiboo.se,gmail.com,nxp.com,oss.qualcomm.com,lists.freedesktop.org,vger.kernel.org,lists.infradead.org,lists.linux.dev,rock-chips.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_HAS_DN(0.00)[]; FROM_NEQ_ENVFROM(0.00)[damon.ding@rock-chips.com,linux-sunxi@lists.linux.dev]; FORGED_SENDER_MAILLIST(0.00)[]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; FREEMAIL_TO(0.00)[intel.com,linaro.org,kernel.org,linux.intel.com,suse.de,gmail.com,ffwll.ch,rock-chips.com,sntech.de,sholland.org,bootlin.com]; DKIM_TRACE(0.00)[rock-chips.com:+]; RCVD_COUNT_FIVE(0.00)[5]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:63949, ipnet:172.105.96.0/20, country:SG]; RCVD_TLS_LAST(0.00)[]; TAGGED_FROM(0.00)[bounces-22782-noreply=patchwork.local]; TO_DN_SOME(0.00)[] X-Rspamd-Queue-Id: C9EA21C008C X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= Convert this driver to DRM_BRIDGE_ATTACH_NO_CONNECTOR and to the drm_bridge_connector framework which is the current DRM bridge best practice. Signed-off-by: Damon Ding --- drivers/gpu/drm/rockchip/Kconfig | 1 + drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 19 +++++++++++++++---- 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig index e7f49fe845ea..69b832d0c8c4 100644 --- a/drivers/gpu/drm/rockchip/Kconfig +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -76,6 +76,7 @@ config ROCKCHIP_DW_DP config ROCKCHIP_DW_HDMI bool "Rockchip specific extensions for Synopsys DW HDMI" + select DRM_BRIDGE_CONNECTOR help This selects support for Rockchip SoC specific extensions for the Synopsys DesignWare HDMI driver. If you want to diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 21b141b7cb9c..b5cfcb936078 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -13,6 +13,7 @@ #include #include +#include #include #include #include @@ -542,6 +543,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, struct drm_device *drm = data; struct drm_encoder *encoder; struct rockchip_hdmi *hdmi; + struct drm_connector *connector; int ret; if (!pdev->dev.of_node) @@ -608,7 +610,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, platform_set_drvdata(pdev, hdmi); - hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data, 0); + hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data, DRM_BRIDGE_ATTACH_NO_CONNECTOR); /* * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), @@ -616,12 +618,21 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, */ if (IS_ERR(hdmi->hdmi)) { ret = PTR_ERR(hdmi->hdmi); - goto err_bind; + goto err_cleanup_encoder; } - return 0; + connector = drm_bridge_connector_init(drm, encoder); + if (IS_ERR(connector)) { + ret = PTR_ERR(connector); + dev_err(hdmi->dev, "Failed to initialize bridge_connector\n"); + goto err_unbind_bridge; + } -err_bind: + return drm_connector_attach_encoder(connector, encoder); + +err_unbind_bridge: + dw_hdmi_unbind(hdmi->hdmi); +err_cleanup_encoder: drm_encoder_cleanup(encoder); return ret; From patchwork Fri Apr 3 07:00:32 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damon Ding X-Patchwork-Id: 1989 Return-Path: X-Original-To: noreply@patchwork.local Delivered-To: noreply@patchwork.local Received: from sin.lore.kernel.org (sin.lore.kernel.org [104.64.211.4]) by mxe881.netcup.net (Postfix) with ESMTPS id 74F211C008C for ; Fri, 3 Apr 2026 09:03:26 +0200 (CEST) Authentication-Results: mxe881; dkim=pass header.d=rock-chips.com; spf=pass (sender IP is 104.64.211.4) smtp.mailfrom=linux-sunxi+bounces-22783-noreply=patchwork.local@lists.linux.dev smtp.helo=sin.lore.kernel.org Received-SPF: pass (mxe881: domain of lists.linux.dev designates 104.64.211.4 as permitted sender) client-ip=104.64.211.4; envelope-from=linux-sunxi+bounces-22783-noreply=patchwork.local@lists.linux.dev; helo=sin.lore.kernel.org; Received: from smtp.subspace.kernel.org (conduit.subspace.kernel.org [100.90.174.1]) by sin.lore.kernel.org (Postfix) with ESMTP id D9E2230346BE for ; Fri, 3 Apr 2026 07:01:05 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2257D3612F0; Fri, 3 Apr 2026 07:00:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b="aFs31TTZ" X-Original-To: linux-sunxi@lists.linux.dev Received: from mail-m1973182.qiye.163.com (mail-m1973182.qiye.163.com [220.197.31.82]) (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 6C3F9309DB5 for ; Fri, 3 Apr 2026 07:00:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.82 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775199658; cv=none; b=Lz3sOU1nqOPo4ikRz8jS4Qt/6fWhOC+8r0PGPUnluPJMx68RahvYOkVh7vc29Fqc6IpXkZSdinzC8fwXDDkzqpY+gsOmXLqZ0D/wodZmhaGYGep8kuKqhGIQrqOafThMeDFo6s+heq3HAtE3R8nmbsnsPuzRPDW0U+K3K+fiwB0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775199658; c=relaxed/simple; bh=mM4aNqvWc5A95bsk94szTpIl5yxidk7QDxh2g1sh4ww=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=kYRxQPsfPqbUL0sZWI6n7DWetu9VOOghegUsy+slmuMfcbe1eaTeBWRHlKj3S8CAM7IMyw0khIpo00IE71NKLA6vVWCN4Kruow5i9vOkdxEdqplRbn2W+sKq2UdViBCNrTIytFZ38aGLYBV+XOqQugSxI6f6a87Fm6EHYjDL8KE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com; spf=pass smtp.mailfrom=rock-chips.com; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b=aFs31TTZ; arc=none smtp.client-ip=220.197.31.82 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rock-chips.com Received: from zyb-HP-ProDesk-680-G2-MT.. (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 396d58c9f; Fri, 3 Apr 2026 15:00:42 +0800 (GMT+08:00) From: Damon Ding To: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, wens@kernel.org, samuel@sholland.org, luca.ceresoli@bootlin.com Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, victor.liu@nxp.com, dmitry.baryshkov@oss.qualcomm.com, shengjiu.wang@nxp.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Damon Ding Subject: [PATCH v1 4/4] drm/rockchip: dw_hdmi: Support to find the next bridge Date: Fri, 3 Apr 2026 15:00:32 +0800 Message-Id: <20260403070032.447102-5-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260403070032.447102-1-damon.ding@rock-chips.com> References: <20260403070032.447102-1-damon.ding@rock-chips.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-HM-Tid: 0a9d5224e24f03a3kunm1d6b6bc811ded4 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGhkeTFZIQ09NQ0hKSktLHR5WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=aFs31TTZtr+bCfSkmGEJmc0xRV7zEwxDbZrhSC+mQNg0U67RwMRuJMxl4yptVlC6kZi5QRfl2dSs3ey2cwYI+2sXDp6VJgBZEO9JDJITLh/JRY5CKD1HhV4l/ODhISn/XFR3t4jpqT9q9y/19yiV87id2R+hDfWQw9s+LbJU9AY=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=qhMDeS5MJsqMangPhhuZJQL2DTnTsaxRf2SE3asViXM=; h=date:mime-version:subject:message-id:from; X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= If there is a remote node connected to the HDMI output (port@1), the &dw_hdmi_plat_data.output_port should be set to 1. This patch allows Rockchip dw-hdmi to support the hdmi-connector and the next bridge. Signed-off-by: Damon Ding --- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index b5cfcb936078..014ac09fd733 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -544,6 +544,8 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, struct drm_encoder *encoder; struct rockchip_hdmi *hdmi; struct drm_connector *connector; + struct device_node *remote; + struct drm_bridge *next_bridge; int ret; if (!pdev->dev.of_node) @@ -610,6 +612,18 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, platform_set_drvdata(pdev, hdmi); + remote = of_graph_get_remote_node(hdmi->dev->of_node, 1, -1); + if (remote) { + of_node_put(remote); + + ret = drm_of_find_panel_or_bridge(hdmi->dev->of_node, 1, 0, + NULL, &next_bridge); + if (ret && ret != -ENODEV) + goto err_cleanup_encoder; + + plat_data->output_port = 1; + } + hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data, DRM_BRIDGE_ATTACH_NO_CONNECTOR); /*