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 E1AE22D8DD6; Thu, 4 Dec 2025 06:32:12 +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=1764829936; cv=none; b=ZWJ85RFfu4d/dLqx/3t4hYI3v7pdyepGgfnBKyjt9/qVtBgciJtG4Ca1Rbett4xcjAxwJWq0TtI9v9/CG0ruZTodbP4ayBSQf5fXUO1x/dHILlZdTOEO52vJeuqYWvmF3c3vPutQTqDnL6ngyLZL68/YjvWbPKRZPYd0lkSTEEE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764829936; c=relaxed/simple; bh=ktQe0TBZJXNabRClR1zK2GRlgnwznm7iN6OWZIxNePg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=CUv1rUJMkR8gZoBWpHfEFFtOQdben7yrswi32VZllexa2GFSTsM/DlALYjFmFgTBB0GBcvANP10LfpeaxJvntcZqt/iUgRqs98YLUDrgoYli+P09fK7RV55CioOdWIlXmDtYQ8BRNhrlMx7nOjuTT8r4IPNB1ropepr9Z7yaQMs= 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=nN3VzhIG; 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="nN3VzhIG" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1764829915; bh=sEWMlrnina66f1mkg7MgIF551DMwzRk8lseSsYVXv/E=; h=From:To:Subject:Date:Message-Id; b=nN3VzhIGVmYkV5tLDcZFdUOH7d56l08xncofUow694LQk4fk8a7s7Po4KnaC9P7LP mw5rGvxXeRjqjKk4hDOhAuzR2M0gLVCvw91HIzhYZlxSXg9z2LPRqqkkwbE70jEaPt BpGAzVtHPKC3N3xAkMVIftyTHqhRJFKFx2P65rBo= X-QQ-mid: esmtpsz21t1764829914t2fd6b4c4 X-QQ-Originating-IP: hZcaALHRrEsVfm0KjmfXoYxrbuS+HXMQE8GZuYKKMRs= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 04 Dec 2025 14:31:51 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 15523287474002060111 From: Chaoyi Chen To: Heikki Krogerus , Greg Kroah-Hartman , Dmitry Baryshkov , Peter Chen , Luca Ceresoli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , Kishon Vijay Abraham I , Heiko Stuebner , Sandy Huang , Andy Yan , Yubing Zhang , Frank Wang , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Amit Sunil Dhamne , Chaoyi Chen , Dragan Simic , Johan Jonker , Diederik de Haas , Peter Robinson Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org Subject: [RESEND PATCH v11 08/11] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 4 Dec 2025 14:31:06 +0800 Message-Id: <20251204063109.104-9-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251204063109.104-1-kernel@airkyi.com> References: <20251204063109.104-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MuF+DMKUphDyaOkPxQeIp8/8UjaViT3n43xA+S4WusRthosWFEHKlpRC FXm29aXiZRSuZ8q18rHgIRPLk9viJrry4P6ZSO/OrjP3KnDM3/z+LRcK7A+kmlErHhe/bsw ABFNKd43Ml74bmnLbCZy/0SOUMZs8LI/fehlRZGI4nH9Qq717CTYHBnrMYlyOs/nuIjZ8u/ juLvbMLEsIfIAQwNo4dOMCTWZ4kvSaS5HA5LzQsfAWUlVGiHY4GcwZe59dY5q7Ab+8vBk4M 6TlkrZqBa8LceG+DztW8U40pswM/jnzN7DKuu37D/uLuUdYmvIIaVXiIexJxQYO+GQapp8R ++ryJW32vrjfh1/wPuUExn+7X6ewacE0QMP/ZEmwVdCKBhvg5hPbGB10OomE0wtr0jpiC8b ICPhikPzcd6ac96us9v9zqVeiJCahE7R26Dz+ztRC1TXV1htzDqzc3WxT5DMuEp8Z0iSs5Q jRoe7fMb78jGAoYTZy9KZKmsdJlmkgfcvqFviTHDVrFeCatWw30bHHZZ8gJK1kQVS49seZ4 W15ZeqIxSX1c/Z/WPQRe0mBOz9cKqs2VsCwGIiQnTdMaYr51X0qNNibP4Yb9S5srrTdx2bE Q+JAE2I65qqSBJXxwJ2vaGh0uWpBjFcJplKMfwucP41j0CupEpfUPMljs3oftsoEPOOuHd1 Ba6S/nTUXAU8lJd0T/kwzG5886q9Cg+vDjePQmpq9zEXByNbPMziKA8YXxyrld92x5a/zid MBjKEyblUhXf1XNvVpTBp4AbDVoWMhrH1FmcG/cIEhRoqJwgzKnw05oGVWSrsYaaWKl4Nae ydcSU4zJdAEDZBrZWDYDUyaMKhBoEJlEuu6MbtafpzMCwa+xKn7K9a2EL0kK/xtnipweNaV rRb4fACoIB0/RXGBqjB4CyHfjjPSfo5DAX+3JtVnyppI0s5FDcYyeLQeblQY12LgJ3gMr4H v0YfZyPZ4Dq+YW9Qltf7EtvFxmPbjTJFG6UqrXSKhi1gDabbuhNE2ud01ARAG67ox16c0a1 paa/eNtz2fDOhNVrScERGC6UFQgEN7Pr9rP83GAQ== X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: devicetree@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 --- (no changes since v5) Changes in v4: - Remove cdn_dp_hpd_notify(). (no changes since v3) Changes in v2: - Ignore duplicate HPD events. 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 b7e3f5dcf8d5..1e27301584a4 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -156,6 +156,9 @@ 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, @@ -219,7 +222,7 @@ 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)) @@ -385,11 +388,14 @@ 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); @@ -1028,6 +1034,9 @@ 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, @@ -1120,14 +1129,14 @@ 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; -- 2.51.1