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 0D655C53200 for ; Thu, 30 Jul 2026 01:35:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4811210EB7E; Thu, 30 Jul 2026 01:35:15 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=airkyi.com header.i=@airkyi.com header.b="t1eNKwdN"; dkim-atps=neutral Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5D71D10EB7E for ; Thu, 30 Jul 2026 01:35:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785375276; bh=hfSDcA/VFf5O36XZ1jIbDeiIvlPOe5N0iYnQa5D5SVg=; h=From:To:Subject:Date:Message-Id; b=t1eNKwdNkdxpN9No500r29bu7yYNQ2z7Zrz4TbfHKKyezj1V0m1iQu2Tc7fQbCn6N 7Ey9ClwM6BPVKgE6F+uhHj+9WRD4tArL8JzFEY50vxtHeCEx+XeO6yXLM0NCbm0dpG oCvgwe7LPq9gERrdCpZG+Gt+FEv48ZFg/9EQJgqg= X-QQ-mid: esmtpgz16t1785375274t3acecaf0 X-QQ-Originating-IP: X5oLlTctQUdXjKL/rw91uokVl8GApvH9Oj8uKXfgQ6Q= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 30 Jul 2026 09:34:29 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8251710835051600933 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 5/6] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 30 Jul 2026 09:33:48 +0800 Message-Id: <20260730013349.51-6-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: MyIXMys/8kCtyIOyauqTnT3UnrNuD9Rc5CFE+u3OZyb+ddIE55WfmpUK YtK8+Rixb94+GxtUXo80V1OcSluQduXqthHdey0sva8d3bet/EkhyDyp03PcU+cpbAADHb1 vze08x/NRWG9BdOhUsjhRbXOJiKQ/l2yDAdna7xsk18ybCYYDvOoVREPvGftf84FqW/GvrV n/rtLLDz5k1RJJRBtdd2qCcuSTEMS4L46J7R1s7zRxOX48yknPq0Mh5Cz30uMrTbz3UxlB5 oiIAWR9Evknxsc5QkGQr29XifBMRCEEc+IjSzcHukufg6huUFbP48mD5onrHQMo/BpREEIz 5ya3fdpR7JGl4GfpFRZ1K5P76kxu6y0PzxqCDz9rFJcAaPMkNWhbconQ0AsnkUC7CDcr42h havOjiglClb9RmWlS/Rb2kfyykpjEqyETswzjKNTosvd+J4/dAE7I4YDD+nYGQZ0KiHyEQB b6AF2RDbBaUuObCM7BF1DMI2D5WVOyO5kWmDfDHNcMwDcdU7e4YVn0GVlHgSLdzYRLItkwn QdQLf/riR0nngnrA9UayeS9chMj76rtTrXPRmSY6UmX4Y+958RmL7xnQ0SkoRq+h7Ncswjp duQAHcaFZa5/9hjHjG2y8+q9RidJVWHxtwn2i8xM2eYfa9fcSdIpe20xhQmSbzEVdKOnlEe 5T7jZYW0px5W3gXe9YD3fN4JPjYy4aX1BQZjobpBEX6+phEvR8CdzixJ59FNL2VuFrN2a12 81fVaAg/7U7Aoh0p4/sArpvaIei866GmYhIVe1BEh+rObmM8qCJgZTqxOb59sAEiCgwiMxJ XkfjoT1r/h99Po8L324vX8d3rtBpLc+niyNnNpWu/Pd8OBLEYpas82b/em0EvIMw6K5ABPh o6/62fHswLymIJVuK82RRR9OYU4TGW97IaNJH/3ahH0oVBK6J91n8KY5r6sTt7ytl1sm6Bp mp2vncuP3XP/M/ogDrUX940PkPW0OguxVWaEox6sGO+yP/b5fC3yAq6VoGXAzWhY+u119/Y d2KLJLhQ== X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== 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 This patch add support for get PHY lane info without help of extcon. There is no extcon needed if the Type-C controller is present. In this case, the lane info can be get from PHY instead of extcon. The extcon device should still be supported if Type-C controller is not present. Signed-off-by: Chaoyi Chen Reviewed-by: Heiko Stuebner --- (no changes since v1) --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index 190cce9530c8..74e1f5422a6e 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -157,6 +157,9 @@ static int cdn_dp_get_port_lanes(struct cdn_dp_port *port) int dptx; u8 lanes; + if (!edev) + return phy_get_bus_width(port->phy); + dptx = extcon_get_state(edev, EXTCON_DISP_DP); if (dptx > 0) { extcon_get_property(edev, EXTCON_DISP_DP, @@ -220,7 +223,7 @@ static bool cdn_dp_check_sink_connection(struct cdn_dp_device *dp) * some docks need more time to power up. */ while (time_before(jiffies, timeout)) { - if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) + if (port->extcon && !extcon_get_state(port->extcon, EXTCON_DISP_DP)) return false; if (!cdn_dp_get_sink_count(dp, &sink_count)) @@ -386,11 +389,14 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) goto err_power_on; } - ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, - EXTCON_PROP_USB_TYPEC_POLARITY, &property); - if (ret) { - DRM_DEV_ERROR(dp->dev, "get property failed\n"); - goto err_power_on; + property.intval = 0; + if (port->extcon) { + ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, + EXTCON_PROP_USB_TYPEC_POLARITY, &property); + if (ret) { + DRM_DEV_ERROR(dp->dev, "get property failed\n"); + goto err_power_on; + } } port->lanes = cdn_dp_get_port_lanes(port); @@ -1027,6 +1033,9 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data) for (i = 0; i < dp->ports; i++) { port = dp->port[i]; + if (!port->extcon) + continue; + port->event_nb.notifier_call = cdn_dp_pd_event; ret = devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, @@ -1119,14 +1128,14 @@ static int cdn_dp_probe(struct platform_device *pdev) PTR_ERR(phy) == -EPROBE_DEFER) return -EPROBE_DEFER; - if (IS_ERR(extcon) || IS_ERR(phy)) + if (IS_ERR(phy) || PTR_ERR(extcon) != -ENODEV) continue; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; - port->extcon = extcon; + port->extcon = IS_ERR(extcon) ? NULL : extcon; port->phy = phy; port->dp = dp; port->id = i; -- 2.53.0 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C506FC54FCD for ; Thu, 30 Jul 2026 01:35:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=uAHiJuuh+TtTfJ703GAmLyptPsBgfkIq+fYyiAWBFTY=; b=vqhKHB5ink4UDQ 1Vc+JJHrzVTVLfwq5pJ7hvhxEEisIS9bcJJhq7TIQSGL9mNV2TvYLevFkF4zauTqeA4WqNBDE2Fx5 2ti+mQGd2vf8FSnE5RwD8sTdKHOjdG6Hy6eIUr2cXi5PhvM+0joGbezoWSfXZ09STM6yDL+TBjLPn j3l8cJqqFvAb9zXpzXqMR0YNF9YnMeGZtJOkpkud1j5yPNiOWXda77laMsBiCLW2Ez6+6ZZPvMPDy o/L8m9nowsuScbMQxvCU1aEHs3Hu4HBdfWIQGUA0DnGzQYOvNs5VDh7/QRPyhL09D3cprOJa9xS+I ipJdEkjGFemTVXEGdSzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpFgV-00000009GrT-1Tb4; Thu, 30 Jul 2026 01:35:43 +0000 Received: from smtpbgau1.qq.com ([54.206.16.166]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpFgC-00000009GRz-2Dm9; Thu, 30 Jul 2026 01:35:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785375276; bh=hfSDcA/VFf5O36XZ1jIbDeiIvlPOe5N0iYnQa5D5SVg=; h=From:To:Subject:Date:Message-Id; b=t1eNKwdNkdxpN9No500r29bu7yYNQ2z7Zrz4TbfHKKyezj1V0m1iQu2Tc7fQbCn6N 7Ey9ClwM6BPVKgE6F+uhHj+9WRD4tArL8JzFEY50vxtHeCEx+XeO6yXLM0NCbm0dpG oCvgwe7LPq9gERrdCpZG+Gt+FEv48ZFg/9EQJgqg= X-QQ-mid: esmtpgz16t1785375274t3acecaf0 X-QQ-Originating-IP: X5oLlTctQUdXjKL/rw91uokVl8GApvH9Oj8uKXfgQ6Q= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 30 Jul 2026 09:34:29 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8251710835051600933 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 5/6] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 30 Jul 2026 09:33:48 +0800 Message-Id: <20260730013349.51-6-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: MyIXMys/8kCtyIOyauqTnT3UnrNuD9Rc5CFE+u3OZyb+ddIE55WfmpUK YtK8+Rixb94+GxtUXo80V1OcSluQduXqthHdey0sva8d3bet/EkhyDyp03PcU+cpbAADHb1 vze08x/NRWG9BdOhUsjhRbXOJiKQ/l2yDAdna7xsk18ybCYYDvOoVREPvGftf84FqW/GvrV n/rtLLDz5k1RJJRBtdd2qCcuSTEMS4L46J7R1s7zRxOX48yknPq0Mh5Cz30uMrTbz3UxlB5 oiIAWR9Evknxsc5QkGQr29XifBMRCEEc+IjSzcHukufg6huUFbP48mD5onrHQMo/BpREEIz 5ya3fdpR7JGl4GfpFRZ1K5P76kxu6y0PzxqCDz9rFJcAaPMkNWhbconQ0AsnkUC7CDcr42h havOjiglClb9RmWlS/Rb2kfyykpjEqyETswzjKNTosvd+J4/dAE7I4YDD+nYGQZ0KiHyEQB b6AF2RDbBaUuObCM7BF1DMI2D5WVOyO5kWmDfDHNcMwDcdU7e4YVn0GVlHgSLdzYRLItkwn QdQLf/riR0nngnrA9UayeS9chMj76rtTrXPRmSY6UmX4Y+958RmL7xnQ0SkoRq+h7Ncswjp duQAHcaFZa5/9hjHjG2y8+q9RidJVWHxtwn2i8xM2eYfa9fcSdIpe20xhQmSbzEVdKOnlEe 5T7jZYW0px5W3gXe9YD3fN4JPjYy4aX1BQZjobpBEX6+phEvR8CdzixJ59FNL2VuFrN2a12 81fVaAg/7U7Aoh0p4/sArpvaIei866GmYhIVe1BEh+rObmM8qCJgZTqxOb59sAEiCgwiMxJ XkfjoT1r/h99Po8L324vX8d3rtBpLc+niyNnNpWu/Pd8OBLEYpas82b/em0EvIMw6K5ABPh o6/62fHswLymIJVuK82RRR9OYU4TGW97IaNJH/3ahH0oVBK6J91n8KY5r6sTt7ytl1sm6Bp mp2vncuP3XP/M/ogDrUX940PkPW0OguxVWaEox6sGO+yP/b5fC3yAq6VoGXAzWhY+u119/Y d2KLJLhQ== X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260729_183525_080693_AD34772A X-CRM114-Status: GOOD ( 15.38 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: Chaoyi Chen This patch add support for get PHY lane info without help of extcon. There is no extcon needed if the Type-C controller is present. In this case, the lane info can be get from PHY instead of extcon. The extcon device should still be supported if Type-C controller is not present. Signed-off-by: Chaoyi Chen Reviewed-by: Heiko Stuebner --- (no changes since v1) --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index 190cce9530c8..74e1f5422a6e 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -157,6 +157,9 @@ static int cdn_dp_get_port_lanes(struct cdn_dp_port *port) int dptx; u8 lanes; + if (!edev) + return phy_get_bus_width(port->phy); + dptx = extcon_get_state(edev, EXTCON_DISP_DP); if (dptx > 0) { extcon_get_property(edev, EXTCON_DISP_DP, @@ -220,7 +223,7 @@ static bool cdn_dp_check_sink_connection(struct cdn_dp_device *dp) * some docks need more time to power up. */ while (time_before(jiffies, timeout)) { - if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) + if (port->extcon && !extcon_get_state(port->extcon, EXTCON_DISP_DP)) return false; if (!cdn_dp_get_sink_count(dp, &sink_count)) @@ -386,11 +389,14 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) goto err_power_on; } - ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, - EXTCON_PROP_USB_TYPEC_POLARITY, &property); - if (ret) { - DRM_DEV_ERROR(dp->dev, "get property failed\n"); - goto err_power_on; + property.intval = 0; + if (port->extcon) { + ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, + EXTCON_PROP_USB_TYPEC_POLARITY, &property); + if (ret) { + DRM_DEV_ERROR(dp->dev, "get property failed\n"); + goto err_power_on; + } } port->lanes = cdn_dp_get_port_lanes(port); @@ -1027,6 +1033,9 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data) for (i = 0; i < dp->ports; i++) { port = dp->port[i]; + if (!port->extcon) + continue; + port->event_nb.notifier_call = cdn_dp_pd_event; ret = devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, @@ -1119,14 +1128,14 @@ static int cdn_dp_probe(struct platform_device *pdev) PTR_ERR(phy) == -EPROBE_DEFER) return -EPROBE_DEFER; - if (IS_ERR(extcon) || IS_ERR(phy)) + if (IS_ERR(phy) || PTR_ERR(extcon) != -ENODEV) continue; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; - port->extcon = extcon; + port->extcon = IS_ERR(extcon) ? NULL : extcon; port->phy = phy; port->dp = dp; port->id = i; -- 2.53.0 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 BBD0FC53200 for ; Thu, 30 Jul 2026 01:35:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ql1jxu/iIntOYOACePbnHHgaKyLC5kmjdoJX6c6pEF4=; b=HHI/rvBaBsBnsT d/NyueXglW0Rr6z8wRLE1/dFGryVH0resLxZVTgkDvML4/WKOof5cQb3l5fmNzBvJvTfbk7yPy4Qn OGlA3RE7ibhNSn6b8f7uGsdQpx/EBIjN1qpCI9HkKiUhygouqJtMiVIozebZC7ap0KFz1twgWB0X3 UnRgxInSfKk0YcEwIHPeNxepKnFZWBoZ+zjlVKurwDLkUouZLc7vZlslaDzwih7F69X+kYFcD3Fsg m/gJkhjolYjoVQ8SeQcbf9t0VFJaLBlGqTyKHfN2JVaeNuFR4MWIzqIzJ9YgtGpbGx/5xqa439fcp LizXxovSMyto56LDoCJA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpFgV-00000009GrX-1mQe; Thu, 30 Jul 2026 01:35:43 +0000 Received: from smtpbgau1.qq.com ([54.206.16.166]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wpFgC-00000009GRz-2Dm9; Thu, 30 Jul 2026 01:35:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785375276; bh=hfSDcA/VFf5O36XZ1jIbDeiIvlPOe5N0iYnQa5D5SVg=; h=From:To:Subject:Date:Message-Id; b=t1eNKwdNkdxpN9No500r29bu7yYNQ2z7Zrz4TbfHKKyezj1V0m1iQu2Tc7fQbCn6N 7Ey9ClwM6BPVKgE6F+uhHj+9WRD4tArL8JzFEY50vxtHeCEx+XeO6yXLM0NCbm0dpG oCvgwe7LPq9gERrdCpZG+Gt+FEv48ZFg/9EQJgqg= X-QQ-mid: esmtpgz16t1785375274t3acecaf0 X-QQ-Originating-IP: X5oLlTctQUdXjKL/rw91uokVl8GApvH9Oj8uKXfgQ6Q= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 30 Jul 2026 09:34:29 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8251710835051600933 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 5/6] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 30 Jul 2026 09:33:48 +0800 Message-Id: <20260730013349.51-6-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: MyIXMys/8kCtyIOyauqTnT3UnrNuD9Rc5CFE+u3OZyb+ddIE55WfmpUK YtK8+Rixb94+GxtUXo80V1OcSluQduXqthHdey0sva8d3bet/EkhyDyp03PcU+cpbAADHb1 vze08x/NRWG9BdOhUsjhRbXOJiKQ/l2yDAdna7xsk18ybCYYDvOoVREPvGftf84FqW/GvrV n/rtLLDz5k1RJJRBtdd2qCcuSTEMS4L46J7R1s7zRxOX48yknPq0Mh5Cz30uMrTbz3UxlB5 oiIAWR9Evknxsc5QkGQr29XifBMRCEEc+IjSzcHukufg6huUFbP48mD5onrHQMo/BpREEIz 5ya3fdpR7JGl4GfpFRZ1K5P76kxu6y0PzxqCDz9rFJcAaPMkNWhbconQ0AsnkUC7CDcr42h havOjiglClb9RmWlS/Rb2kfyykpjEqyETswzjKNTosvd+J4/dAE7I4YDD+nYGQZ0KiHyEQB b6AF2RDbBaUuObCM7BF1DMI2D5WVOyO5kWmDfDHNcMwDcdU7e4YVn0GVlHgSLdzYRLItkwn QdQLf/riR0nngnrA9UayeS9chMj76rtTrXPRmSY6UmX4Y+958RmL7xnQ0SkoRq+h7Ncswjp duQAHcaFZa5/9hjHjG2y8+q9RidJVWHxtwn2i8xM2eYfa9fcSdIpe20xhQmSbzEVdKOnlEe 5T7jZYW0px5W3gXe9YD3fN4JPjYy4aX1BQZjobpBEX6+phEvR8CdzixJ59FNL2VuFrN2a12 81fVaAg/7U7Aoh0p4/sArpvaIei866GmYhIVe1BEh+rObmM8qCJgZTqxOb59sAEiCgwiMxJ XkfjoT1r/h99Po8L324vX8d3rtBpLc+niyNnNpWu/Pd8OBLEYpas82b/em0EvIMw6K5ABPh o6/62fHswLymIJVuK82RRR9OYU4TGW97IaNJH/3ahH0oVBK6J91n8KY5r6sTt7ytl1sm6Bp mp2vncuP3XP/M/ogDrUX940PkPW0OguxVWaEox6sGO+yP/b5fC3yAq6VoGXAzWhY+u119/Y d2KLJLhQ== X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260729_183525_080693_AD34772A X-CRM114-Status: GOOD ( 15.38 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org From: Chaoyi Chen This patch add support for get PHY lane info without help of extcon. There is no extcon needed if the Type-C controller is present. In this case, the lane info can be get from PHY instead of extcon. The extcon device should still be supported if Type-C controller is not present. Signed-off-by: Chaoyi Chen Reviewed-by: Heiko Stuebner --- (no changes since v1) --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index 190cce9530c8..74e1f5422a6e 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -157,6 +157,9 @@ static int cdn_dp_get_port_lanes(struct cdn_dp_port *port) int dptx; u8 lanes; + if (!edev) + return phy_get_bus_width(port->phy); + dptx = extcon_get_state(edev, EXTCON_DISP_DP); if (dptx > 0) { extcon_get_property(edev, EXTCON_DISP_DP, @@ -220,7 +223,7 @@ static bool cdn_dp_check_sink_connection(struct cdn_dp_device *dp) * some docks need more time to power up. */ while (time_before(jiffies, timeout)) { - if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) + if (port->extcon && !extcon_get_state(port->extcon, EXTCON_DISP_DP)) return false; if (!cdn_dp_get_sink_count(dp, &sink_count)) @@ -386,11 +389,14 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) goto err_power_on; } - ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, - EXTCON_PROP_USB_TYPEC_POLARITY, &property); - if (ret) { - DRM_DEV_ERROR(dp->dev, "get property failed\n"); - goto err_power_on; + property.intval = 0; + if (port->extcon) { + ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, + EXTCON_PROP_USB_TYPEC_POLARITY, &property); + if (ret) { + DRM_DEV_ERROR(dp->dev, "get property failed\n"); + goto err_power_on; + } } port->lanes = cdn_dp_get_port_lanes(port); @@ -1027,6 +1033,9 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data) for (i = 0; i < dp->ports; i++) { port = dp->port[i]; + if (!port->extcon) + continue; + port->event_nb.notifier_call = cdn_dp_pd_event; ret = devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, @@ -1119,14 +1128,14 @@ static int cdn_dp_probe(struct platform_device *pdev) PTR_ERR(phy) == -EPROBE_DEFER) return -EPROBE_DEFER; - if (IS_ERR(extcon) || IS_ERR(phy)) + if (IS_ERR(phy) || PTR_ERR(extcon) != -ENODEV) continue; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; - port->extcon = extcon; + port->extcon = IS_ERR(extcon) ? NULL : extcon; port->phy = phy; port->dp = dp; port->id = i; -- 2.53.0 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy