From nobody Sat Feb 7 20:39:37 2026 Received: from smtpbgeu2.qq.com (smtpbgeu2.qq.com [18.194.254.142]) (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 1FDC82DA76D for ; Thu, 23 Oct 2025 03:32:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=18.194.254.142 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761190353; cv=none; b=RgTsmV5+3xdJFfHmNYNGOp8LISsmlRdjdGqYK4cI+q+6TO72mQ8Cb9XmZ+2iqBsvtrfT8bq/t9rEfz6QJdBYpwlyDNlQ230fhxHqyDM0K+bC7KbbSFcE2wCbdIln/Mgs36/lASRNGiM42fwJy4L3iZocNRiT0q0rpznW5zNqP0w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761190353; c=relaxed/simple; bh=M4nUEX7h4FeSk6XVEQszUpUpBE3mjUtZPXnyDXgdiFI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=Pw2s9avewS0KJcB0xsNHyIFjxm/cuamFvhGH9TIomfLj9uA7JkFr4DywX+mhLRsiAHLEUEqjt8U125stU36iJdVQUnC5xK1/wOtvMDRHABFSsfMmEe5IdGtwOLRJeKKNwnIosDGjOFQFHAM6cV3HFXai0Rj7ijaz6oUkDvuZ90s= 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=Bl6Jik6J; arc=none smtp.client-ip=18.194.254.142 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="Bl6Jik6J" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1761190256; bh=nQG0w7dhU7Aew5bKV30plkPn0nBnVdgTnfwSbxYLntU=; h=From:To:Subject:Date:Message-Id; b=Bl6Jik6Jxip/hTqiPay47yYQOKK0urbSQ+11av+8o1jdXKbPTwFeWy2ByYb9MANdS q3IhxOhu5V1re2mD+0huqAId/Z7+805LGqrxh3HRvCvbq/7vy0IiTM24aCmGqyjRRQ oain0HVh0EXyaC9aokU+vXoMQ5D2CV3C4CVOUUJU= 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: N+aOzryTDkdC5TOsXVCC0WKSzV5F98nb9pI8IwZiHMt3xvfr+pGitVZ4 3l06+XIvSFBbVjWWdoqBF23sQYxAQBo/q8gkxB3OvdRna9WfofjaBfSYJSQa+uNkXT1UAiE 0tfIhEa9XHDqR2CZRDM8GCVouPV5RNrPTuA1CvhWmA/FDIVOFDB/KfzhVkunwY01Nhz5WKh uDArCOSG1pUdR8B5MJijKDyzQ1qrPOMADTpAKAAsG3ocHphE4nDahZELBlfE9CY7oL/ikoS rNxSClIqQiKFp3jTEbxOFMhJ5aUeUs5GAsz9jasGqraYRCi1USNYGUCM/d6BHzPLmNaLWKw 2SuJTq49Rbq/g5o7brJfXMn9wGudqA6jLBk8iwqujqdbXmf4mAFyvwHBC2TR0mvILHw1cGB FgvwGbeTE3l1epCVZcjLVby0TDKAVXCIw23RLtvuaoW0DPYreYmW4kGMWOHHPSKTNgSLGzF /NVs+B74nde/Jq6l+mA/SzdYJ79MuTauzOqkGxZqd3qzqhSCFqbnAT8A4I5Coc1KUZ2BQEB F8I3tKL1HhR+KkZg3I9YaII9WTKpZVsodsXYHhMmWGjWFBfI9jlv9QbdcJZa14XvIWQqAvt EObHv+6lGrMo7oPoFDug/K13KtZnYQ01OziWVx769wI8RjqRfiJLC/RUjWe4dxUynfS8Ig5 8mMCZWopgwK6CpYGHrT+nkKysuJ2IBpJckTl/HHnCQpxpRn7uxHXkUnaUdBLtTbcK+N0jyh Va2ZUhxlhF6TH5eA4NG0hLhw+bbwgRag0pXQfzhymvg0EBYwLhXM35SukPIDtzgSCrTISlJ iUGptvRAz3Qh/Pr+A0cQ+8Osr1HSlkK9e8bhyKBfku7wKo8nbKq98GSRhAChXiBSirh9lwk ngMUlHt+fG0V1ZrjhGc94d7aETWXAf7lL2fMIGi0amDyMGdwHJP6aMmCzQknQ1NRQ9sODUT JpbeQIKErwpzCD6n4Yly9f23vN+pGJ7yiKOaekCkW1bkiYWevbe0PEqCdZAY/Mq+VmzCRmH jaOTLw/71n6+4XhZahiPb1uMFTWGVyid8AaIroRA== X-QQ-XMRINFO: Nq+8W0+stu50PRdwbJxPCL0= X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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/rockc= hip/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 *po= rt) int dptx; u8 lanes; =20 + if (!edev) + return phy_get_bus_width(port->phy); + dptx =3D 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; =20 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; } =20 - ret =3D 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 =3D 0; + if (port->extcon) { + ret =3D 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; + } } =20 port->lanes =3D cdn_dp_get_port_lanes(port); @@ -1028,6 +1034,9 @@ static int cdn_dp_bind(struct device *dev, struct dev= ice *master, void *data) for (i =3D 0; i < dp->ports; i++) { port =3D dp->port[i]; =20 + if (!port->extcon) + continue; + port->event_nb.notifier_call =3D cdn_dp_pd_event; ret =3D devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, @@ -1120,14 +1129,14 @@ static int cdn_dp_probe(struct platform_device *pde= v) PTR_ERR(phy) =3D=3D -EPROBE_DEFER) return -EPROBE_DEFER; =20 - if (IS_ERR(extcon) || IS_ERR(phy)) + if (IS_ERR(phy) || PTR_ERR(extcon) !=3D -ENODEV) continue; =20 port =3D devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; =20 - port->extcon =3D extcon; + port->extcon =3D IS_ERR(extcon) ? NULL : extcon; port->phy =3D phy; port->dp =3D dp; port->id =3D i; --=20 2.49.0