From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgau2.qq.com (smtpbgau2.qq.com [54.206.34.216]) (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 045273570C8; Tue, 11 Nov 2025 10:51:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.206.34.216 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762858288; cv=none; b=U8Q/yg8JuFBSkGfrvPJoLVKqrAXdDWTKgsGW6mmzL6nskFfdp/2nAoUzPIGpUS3bSmj5hHCgbbwnsJxmuRfasNB+7myC94fLDsHqf/CVbrFiVR9RVbJy5hAKpI0OLcHBh34Y1iJFj0T5rvvsB+zagEqRBBEgFdbkOWuEiA4kwvc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762858288; c=relaxed/simple; bh=ktQe0TBZJXNabRClR1zK2GRlgnwznm7iN6OWZIxNePg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=PxU1u9mWrfuWA3xXJioxuXIyehEZKKw/zXGs5/fQPeFuHiJZESRZKUGrlFqkLA/ZOzAwaY76XX2FUYYjDooDiiKzpZc5OSOIlG4lsUPzCRKadAVu6Gtd+E27McOFu3iGgMA5dSjtsGgnxsE4zyPhOXleBFPVWlOUBcuc5b2F3CE= 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=tQOz4Cin; arc=none smtp.client-ip=54.206.34.216 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="tQOz4Cin" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1762858282; bh=sEWMlrnina66f1mkg7MgIF551DMwzRk8lseSsYVXv/E=; h=From:To:Subject:Date:Message-Id; b=tQOz4Cin+mLCfj9sjw+zFe4WQkA8ZW1g+oLTvoV4MCzkHSqDboN4Maj2hhoi1oVx7 Owi8EgX+0oYQ2EESAz4CJ2v4Lr+s2oSWK1WE5m/7oEVKTI8tRNrQdZf7jHDwjrhkuF ZNnnhRxdqsHggOsyCuxdhgQnZ1rwcEk3JFTTzyqc= X-QQ-mid: zesmtpsz9t1762858278t101ea436 X-QQ-Originating-IP: KIZLeegrDP7BdwpoI03I1Jn77fOqzylhUhpOTTA1aKg= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 11 Nov 2025 18:51:15 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 9277144909567469895 From: Chaoyi Chen To: Heikki Krogerus , Greg Kroah-Hartman , Dmitry Baryshkov , Peter Chen , 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: [PATCH v9 07/10] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Tue, 11 Nov 2025 18:50:37 +0800 Message-Id: <20251111105040.94-8-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251111105040.94-1-kernel@airkyi.com> References: <20251111105040.94-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MoXwTY6T4qpUZUqmSovu0Ac1+5W83o5i8kU7W4URJdfU8R8z0FMC8u1F c6GjFVuuMZefjCC8iURyP1sN9JiIMH/UvQykgmrB9YPsBage4AfRbtQuRkNVVsX5q9rUyl6 Gk1bVLWSkofYwoTjOCNR2gVxrj0Uc+udyzCOhL3W5d1oidZ2296maUKkcpYaiU15H6nkj7A 7+TNyQEeSXXKavhFClLRc5LEsSl2MYD2YExUIF2KI6ocDu274DBkW04S/hXOg3IXi0fBDQi dnK8rhhzQd6fypd+qQqo6Gv5qGhJgsRtYcxedbxBjR1bpCDKxTQ+FIiUeo3l+f5a6e3l1Bd d12bByvSeS0dSoypgJn11iKrsnLnDmZPSnHwEJFk3DutQtJDwizzBqqfKQAgvaH2SKTQ1dy jSWA64ktrbaYhgQ3JYufaZM3a/xmPY/jMrJL0hVqfYKePjf6KpIxdq75jvbhjs8h/0zht3c uV4b3QZuRYVVgeyM2pv49EpmjS0mN5Gz750Vn5CI0DpA/U3dOA7OpoLF+PBxTHgTX6g2zR/ H6Dd1adazHL7he41DH16mVm2d23lzynmO2jtOEr/0oHqWhofK/k+/5k2cryj454otzytHW3 HTasWmRbRYXdO4Pbs04zYIs7o1K/dlu9Da7TuGUV17VZC2CiIDGwOK2OnH8mk9STmlNCrlu NjKEZ30ek+JDFoIoNZagJYszvTMhUhSCkcibUHd8lm3aO7vELYFPG6F8T2bhLcDKuGpqUU1 ocPIqNoHOElul6tSOY/5S5Jhdg8qR8lr8bHGC9KOx13BoYEosGlXz2kisrBz7YR6GzcoN93 Yi/sR0R100eKJ93wBkaG/6DyuvEOFjcsP6T3eumvURJt2lNb/r8uAeUFTvj6oq3nnow5cnr lRtwHXYrE6ttfrByxkVVCuXoQP8QSqLuEVsLzxNQURbhGLFpVkAxQ/e/HCtwxOoC/A3JCET SaQuCixTgWti3rxXd3Dg9cXpCpS0sXkAO4ItweB5qvFk/ovB3JA1bGi6lzn/7P0T4XWz9MR QdLaeFGxo7hxr13tmefip5sVOvwCA= 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