From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgjp3.qq.com (smtpbgjp3.qq.com [54.92.39.34]) (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 E99EA286D40; Thu, 23 Oct 2025 03:30:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.92.39.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761190262; cv=none; b=X0DkkI+ANDqEUHSQ3kj6jAlNBqYvc/h778WukvqsYQvApRJwIP+TdBfI55lntN1F1DryvMymjPIQXvg+TNCjusOpyas4Ws5O2b+46WaUXzpDZuL+VY9k3c2FpNDX6RNNyNmo96ifvLRPdWR3lwRyDYLRs7JJnPaCw5BgQvR6oNc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761190262; c=relaxed/simple; bh=M4nUEX7h4FeSk6XVEQszUpUpBE3mjUtZPXnyDXgdiFI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=DmoR3JHJoZy/zOo20Gt8qmWp6Dv/tObCwpe9V5EflFbfxp7iDaDlSIPd27t2V8Ee0rWE9q7UG5kzsWx58VFizJ7mPb3IEn6CMsvu+8tg8f4/4rfc//9pu7PQtLP1lf3ShRznCNY53rUQJwMYXQA8wsOLXX+VFVS8zsmmxGo2Dgc= 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=qeyCkaWX; arc=none smtp.client-ip=54.92.39.34 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="qeyCkaWX" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1761190255; bh=nQG0w7dhU7Aew5bKV30plkPn0nBnVdgTnfwSbxYLntU=; h=From:To:Subject:Date:Message-Id; b=qeyCkaWX2FzPIRJ/0vJ54tc9bPyelpv0+C+Tus2WQBaJuUJiSHjbYMjI6RrHOnMYL 7j0fHZrXqbcMz6xRF+u0jHYmbSa5S0lKRnp46HJ27zQWXa9GLJiCNaxcCVrzxGmKKq Gd/V8hyY7W7G3uhqQm+jbI4SUaQrb5nZncyNiXb4= X-QQ-mid: esmtpsz16t1761190254t76ee6809 X-QQ-Originating-IP: ry/u4/8KR4C2zosHm3ALD9iejKzqUxaT+ZTDF/OGwF0= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 23 Oct 2025 11:30:49 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 13604929082984056362 From: Chaoyi Chen To: Heikki Krogerus , Greg Kroah-Hartman , Dmitry Baryshkov , 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 v7 6/9] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 23 Oct 2025 11:30:06 +0800 Message-Id: <20251023033009.90-7-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251023033009.90-1-kernel@airkyi.com> References: <20251023033009.90-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrsz:qybglogicsvrsz4a-0 X-QQ-XMAILINFO: NoBhuER81KU6Pl+4SpwWqKgHGo7JJoYDzqUtX6/xaRHDFUX5thFWF91F hm9rGv7AXvFg5xTPtdL2sm+AOCpcPUHuOqSSFNqXe/v8D4pmAF+7Kwqzv7ss8fdZpjCG16d qAYSi4tuSWr6qW8dgQEZvOllD2+JowwU6p+Qy9UqQQAzyX5JNzrFslfULlucJi9GylyjNmE xJuWU4rnk8leAuyTAizUlNodJy+RPPu2eF/bjOTaeyPUeSrnQa0GPQaIBj2aEGL7vMp/gut +QEyN4Fjqs5f0HEqCHnBrNQD6KYQlnvyPisIaO1AmjI1v53mkzpm0kb31DKHaxO9lcA2sh8 kS/Sq8+XthjC3ofeRsTASDgQFDpJAgSHyT06ZWH81MqHqesb4Q0QcieRmAcen05tW3MQLxm L/ksucG0yEA3pzSwSd2RMZN2ht152ifXFZuhdDQRW9VWybigOJN1LveO5x11cnBxVnKjaHT YdrBZhRaTG6A7iY+yaboiWf35ssKAVBv0zwy0zg2VDFxWJn1ON2oOR692PlGO8k41HWzR/r xmOrBgE7OjbZanu5Izrfu37Magh5sbYeAcaSDFoolU//JiJnWKyXFjlMkqGzycZtVlA7ueD cNst7PVCKp2dYSDJ6dg6FGG8o4IFdJdjzwNTZoR+CEuq2UpN/kNNi1kAUOoAy7k5euymRxr QX7kz/flF9bjiT6HCz2wvw4+E1N52KxyiRpqkBXiBwfpSBmAGWHBXABmFXvQjO6uH0wf/lt J8fwUYrRyIHr35NXyNotmKaefZTCrP9uVI3Y5X8oLVatUdU2qMMVNyWitMrF2uwlZ2VuIsj P9mzIItbJOq+GNPHccRjjXisMoOgQIHLA4IdzDrajGJkpQEfxat+jWj+WEtBVlZvhAaTJKE SA/TeBwsBCOpUQn1+m+hyP6s1QThpTHb/9L8lTXxIajTuoZYHKOgra8/1oUaTfE6Zpfxhim ++0FVu85vPQflAMqeVkkHAFjwSj7LyNnRWNJOg6mo8GjdGygYCy6dg/rhfYpG1uU/7/lhgD R0UMsKblfRv0uHqaYmimiJt/dj4XGWFf2ppeqQgw== X-QQ-XMRINFO: NyFYKkN4Ny6FSmKK/uo/jdU= 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; -- 2.49.0