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 64F5039A06F; Wed, 4 Mar 2026 09:43:20 +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=1772617403; cv=none; b=DvcAxE+k/70nf2WV8LS1eZqkAkLPaaqqK2J+Zpx5H8QJzZ+gyVLqLsR3Z1Q45xWLBGdIKr8p80nHumzpBKC/zCny/h9xAlgc3j87QlPjso8txxCGrlNSYvL4OoOv9rogeIAZMjKykdUWRu3Uc7NQBxpwXpYc1EJXZLF+O7P8yHc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772617403; c=relaxed/simple; bh=Zo5rb2kFGKM1wpR7HFPird+yVAzTtbv7BriEoQsoSYA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=hkTEZhZ3gQGx2QlUBKvSwG5Nbw8fwrJUx7EMMR2VzZBows5S8e8fO7h0UfdIMcmpitIjwv2cO7WN5u0IFLffqvjCHM6N3o2MLJBQZ6WoHN1cNBMFs89VRR2lbg2UE0wNMZUt/L/c7A0N/vDIUVn3XWdS8TYI0o7gM07CWYOT7uQ= 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=RAv9KJmf; 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="RAv9KJmf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1772617380; bh=R2+PAKy3j90tO2/aruykNQqG1CqbsF2c64m7OhVP2Wo=; h=From:To:Subject:Date:Message-Id; b=RAv9KJmfipXN+QHpedXkFMUo/piTjWFxqS2Yh4Xpn2yk9QYbE+t8uWaJTwi9fSgY7 p8FMP1gy3cjqgiNW0SpatY2yvO1qZ02653kzhm3x+0zFwtTP+gnVnPe7w7Pa4QHjIk MQpKQWQdAQ+o8qYDPaHLM9BksJ6svLDp6dfT8DPY= X-QQ-mid: esmtpsz11t1772617373t9823613c X-QQ-Originating-IP: pF7zHsE/j7q7xL3YC+SAOsJn9ScNFV1FqEKBp2TMTwg= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 04 Mar 2026 17:42:49 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 9974403260867921105 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 , Dragan Simic , Johan Jonker , Diederik de Haas , Peter Robinson , Hugh Cole-Baker 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, Chaoyi Chen Subject: [PATCH v15 6/9] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Wed, 4 Mar 2026 17:41:49 +0800 Message-Id: <20260304094152.92-7-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260304094152.92-1-kernel@airkyi.com> References: <20260304094152.92-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: M7dxyDFn9MPmvDdO65NjEGVdNgP+HrSb0yOzhzSrJlftPXXHVFp59ZIR t5XqIeHi5uUV1mNf6GNrda2aLMb2jcZWpHJoGNjCXYHjvf16w/14xeaUvCYVwZ1Dg39nb4p EmVSJFrp71DYSs/02oTtxZ1dNz8M/D3YANDAY4samSpAIeSk+VAwaIq9Slq6BJEuiuT+UhB zKgbBmxgUXkju89BSLwTcdI4jzQWpd5XpDQ+JdcYgwSCFuCUNCFJ9QNkC+C4owLlx5k2fmz P5jgHpcSfjMFzEu43suNySmpldKiGYcu6hnTrweBKIzAXB2a5dlvW2EWGwPQP8glSKWWTux puipQHwlXLPntgarvg7rtGwlM5/qPGRzn1UplrnWbNwrbkPZ1HF09U41Mr94LqV+Z4KplkT tBPvomb/f84S+MHKgfWR90EYFQDTKXXZwVIZVCr7MQRl+6Gle5h/6fCy/gmvb++Ej3mlRYl pYaTuG/sx8AaXURaj66uP4DsKTusiCojyUzrft4liFRguvUG9mB2sb/++ctwSKKFx4Y0SAw og86AUhcbPpXSqhxwxJScZSN6gHcyhhTrHf7f2PylmkA6FoM2PBxC/BuTQeJyNt3qNxGHgb aLXA5yuDN94yQ9UkTWG+9D+eVO30SuG53F4GyEhYKixLPtuJLwOVoOMyVUng7Pu12ESyPVQ NaXvaaGhyR+XNaXzNsdZxDm+TMyM/CSPvb3CR18jFmbSd5lrTMMiYU6gRMr2dGepDs/mIR1 PUO8UIqklYmHr5Obar3cTYTgk9WiAW+zrzWbwPpFc2RyD7HrRdMXtnLSM+LO3mfN/uRgrZg Dke9N0YZ3oq77Zqs+8twZMpBPvcAL7vMu1uHYfjkF/LPW9VXz0veD27n3q1pD98Ay1GgsZl 7uHugTsq3iYOcBglvQZqFLgA1XTbIt24CwwVlLqHYNmlhVk9ykveCi1jvG8KymQWvlvosfE ji5V4Ec71gzFhdICnidGNq781faKELU1he8zZLb+eIBQ96lutsh6UJUGqKUZNR8SFvzbLg3 veIt2JH07z9M00Gui8OZyX/R0L0Gnks7KArY530A== X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-usb@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