From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) (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 111EA3396F4 for ; Mon, 8 Jun 2026 07:09:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.204.34.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780902544; cv=none; b=rt3RV+/RprPHiTloUduTFw1gphWFDtuU/zqtnvlqD28jv3CwO+RThzwU2RWsQP9afL5MF+AB4Q2Yg6dfaMQaFBeyC9p5rh9Ql3+kzRvUROhXutUKWCYaXxGg6i/DYeOxp8iFwU+MiWlX8E0wIr5koYh6hRGNxrwUZTDs/j6ytu8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780902544; c=relaxed/simple; bh=W8Jrw1/nCtZxBRPflr14x6Y32IimUwyusywZWytbBJo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=Nur1c5P/efDvS5OTwlmGoWkkly7eb1LImfRKuHmNLY7ywPeID1OUzlOwN8SY0tIOU62/Zmj1KubVl6N1Qfzh8zSsbuSfeSy80PNFZhnAxMLhYHgDIwN+jkTG6w2gLocgJv6r8qQWfSw1/T1sA5OoLDs7yIrMVdtew0zYxftZGL4= 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=SD+s+nC3; arc=none smtp.client-ip=54.204.34.130 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="SD+s+nC3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1780902525; bh=BJBXqIdMo0uJb9odMwXPl2LzKb3wWNT/icd4kKoMmsw=; h=From:To:Subject:Date:Message-Id; b=SD+s+nC3W+DsOCGoU1QcxXW4EWqB6d2JP1f95gV/OOD9gnl4cML8RdrjC/e767VwI RnEDvavwREQgWBW/bBpZAKvaBkZzQFNsDllV79kA3VWpakr95knryR7a1Qcjgc3X3m 4EwR3mUUeYcIV+DIPODzOdHU0Z/Wulk4rXsyXHEA= X-QQ-mid: esmtpsz10t1780902520t711901a3 X-QQ-Originating-IP: Jz5ZQWmRqpeGhkm7cKGk5fyrmUiArGhysVK7jI09zek= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 08 Jun 2026 15:08:35 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 15018740618981124911 From: Chaoyi Chen To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Vinod Koul Cc: Nicolas Frattaroli , Sebastian Reichel , Heikki Krogerus , Dmitry Baryshkov , Luca Ceresoli , 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, Chaoyi Chen Subject: [PATCH 4/5] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Mon, 8 Jun 2026 15:08:04 +0800 Message-Id: <20260608070805.88-5-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260608070805.88-1-kernel@airkyi.com> References: <20260608070805.88-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MyirvGjpKb1jqS4w9isz6TrFDUIcYs96gFKgItT1y71LaeYwAYVjnrPI Dqil86xX6bPlIwJCtLnqHKlkvU5B/+K0+lNTzDO/G4W4lpf2HDywYACDlTgwmtF4Lud470s o6t+gv1Tir9NNOuzT166BKNEFoH6dfGsFDBI/TRy9px4VZ4gmE0b8kfeaahToG41Yoqqhmx G2nb1ezXbnEED0IrO63xsb4I1Yx/bD5s+I2oHpC/5fiTQ86acdX0Ckivc1jVevUSN+I27wJ g0WSUUNhanfiNLsYclKnluU5vYC1if1P0FuZApW/s7ScEcBDLjkVY/b2rX314tS1fQ8LO71 ckkRkvQbWqLaLVWCf+he14IJcVV4/dLhV1Iue9nILB6d1nwlow76HJNYEonKOTQIXp/+K6G HsuJJHcQktVCnVgW0oTiAZhuO9Y3GWHwQoawom4Dqy0MdSe0aY7cOz/XyDYJAgjbmVK+v4t f0n2C/nfrATD5v6chZI7qcUb1tmeRV/fDsx1dJ8uW9/zBJmYgXBPRWF7V7ZaWwUN8KIzjtX dZ6KJWZgNPvvGZ5Ji9XpzXZm4Qak6JRz5vxKxzPlwSo2jh2c489so3LGLmeWNAfg39+c76k MgO9D0GviyCTa/nvuMx9hyh5DiZjYGH/C5W31m5sxgTJt19cxLVGsmuwMwf0AqGixHqeTQe W6h4h/jmJhQquIzsN0SzR7eW/yyH6ymnOezJVdPGuTy0zgHMB/wN6f1b9YgHdsK5l7AGWvD 2/uRYryFzQ2abx2/MomI3+oMKGrY1qP7fotS0IRIZoEay1WsDCX4ElvkkvukoGMKdU/rHkI Ajg28ZIU1TmLqqZoQ0NWjuYMRpmXR8yw9Snf9BZUGIc5LtTtrXN3FbYxJfVfeBbsrmAeyaV HqpN18MhW+XytT1nHFCKV+5ubYNP5F2T3radMhNEnP6I+yGJ0YjLtGTWgtn04UNkmZ1+2Mi qyxpsvFNhNmruQkY6Si13rfymWymHqlATmPyGMxm3Ty2sIM0+cBHgFvYPKeOHfzE+yokeb3 BwYMf7xcM9dXkKfOywCqgB8IhYreYs15w1gdB2SIZND1oIcMNl X-QQ-XMRINFO: Mp0Kj//9VHAxzExpfF+O8yhSrljjwrznVg== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 177e30445ee8..9068118859e2 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); @@ -1029,6 +1035,9 @@ 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, @@ -1121,14 +1130,14 @@ 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; -- 2.54.0