From nobody Mon Dec 1 22:05:55 2025 Received: from smtpbgbr1.qq.com (smtpbgbr1.qq.com [54.207.19.206]) (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 084E02C11F7; Fri, 28 Nov 2025 02:05:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.19.206 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764295513; cv=none; b=bKYtBtHWWNWFnIyIDPd9N9dOQEYZu1kfRBjbjdSR48yeQ8Ph3VUebRGOdMFHXd5/OVflOx1OPv2iMRyCdbm3l8wb71xSwUl8++WWYKJtRxkYhXFm/A63T/EwZHE1i0IGCZmJC5w3S2xU/hUKXBSjD73kwzGdwgvgVzFe3OLhnnU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764295513; c=relaxed/simple; bh=ktQe0TBZJXNabRClR1zK2GRlgnwznm7iN6OWZIxNePg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=UElnw0yAJhUuzIGZCMABcpA9jJ5SUkcfLatfJWYPaS+n4lzDYLr9s8qPAH9zKBJOwCjF08Hjhr1Amr+uTvyGcl+83oEifo/KXApcNzBLrT1Ioq0D7/ndtMlAY+Hs5GaOejCgzSro2Y2Dz4IXlYv3yaaG2S85IBigxKxkRwQas+w= 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=gdit/o07; arc=none smtp.client-ip=54.207.19.206 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="gdit/o07" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1764295493; bh=sEWMlrnina66f1mkg7MgIF551DMwzRk8lseSsYVXv/E=; h=From:To:Subject:Date:Message-Id; b=gdit/o070EBoAyWli+7QQCItqwMQ2Up1hFAVsO0ay7+AJQmxBmm+8UrZuWBBSthv1 8o8/f/DxahSlUGUU/UFayVwPk41V6VVrl19MYtm8JLs1e6pmGMgOHoN7bxtcHBarzx Jti0U7QtiGyaT8pr/aX8R4BBeLbXXsp9ITaAbLWw= X-QQ-mid: esmtpsz21t1764295492t39aeb65b X-QQ-Originating-IP: HkeozkZkjMzhIQB9uVBGumvb7YNkx7zQ7Dq6hE3efOI= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 28 Nov 2025 10:04:49 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 15549458326781898726 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: [PATCH v11 08/11] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Fri, 28 Nov 2025 10:04:02 +0800 Message-Id: <20251128020405.90-9-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251128020405.90-1-kernel@airkyi.com> References: <20251128020405.90-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: MB4pI20wLd1DJNwAsx5KrYYZapI/67dVL7o/z5nq8vcwHuUMZuCZlf1N GfqTuw+QzJZnNVb+Y7Dg0VCFkWcXpTVCFBoCAMFzyo6Pzqz5wIicH3lQC5MPTC2mRTzsck6 JpFnCKCyRMECON+ZuY0Sg7p5s1M970EJFMBah0CC01N5XHZq6fWPT42QfyJwFJtihnjtgnI s0DCT0V6kWbioMB724Sinvsofw1di+e5c2swmHR+g1We8ffr5t8c8lbmlJItVle7WGENzYw R2W1ohSeRpIY/FbLPLVrjFdBMehIzHedaFwXjXbHxGDiIef+ULI9Qhnvn3HnTy9rAsNptF4 mfgMHHgGIQuLPNUL3YRJ7PwaHAxRkkx3notTXqfqkrHrwzV4hmy1XsMxIHNrM5leRuUN3qZ VbRpfHHVO/xD1IDsqNElaYLKe3ZM+VNzUCs4lcvBTY5WwLI+68dPN9djpGeJcvhV0uA6q3a iYqMgrJP2hplgVIV+HgfbEaco5jcOMEZnKvDHifzo1zb9Di0lN+mTcdSa1yI9U7j5BR2irS Y5sciWl5ga3kRoLrENj81LRjte9QRdtbDuYo614uPt4xqQegvDaqdTHoxCcxYKlgQeNtanP z9SqAreKaoxAOhWwhH1qD5adhxubzpgOWulIvIxIhlQ+xwsK3i4F7e/XvCOw2yZNJWHe0ox 3uD+ML3D/bycYtvcUh8AZTKfp0GIS7ch6R91Bgr/qcr//4ciL4td0D5vfrp68wDKAApQ8YA 1ys2Uvwa+47eCUPE0a25FnnUKkFlp8itgQf+lmlVWB9D++59gKgqVlOV1OxLsQG4af5wjJE D9cr/nSHyi4yJghOg7WO4Z0e6m2Qo50BBsdUlOPvlQta61hTFwjNY/XfhUJzbCgMrZpUIHV bKoMZgUKcJNiMq9x+GDFiTS92VIE/fC5UqDOTZuvhJlM7R8trBg6Utk2aDHVFv/mt7Kd/N1 EwIH0mxMYUZmL9U9HiJhVpSiPLGXFcATmCZ5j+C+fuPqLKIw2IIyI2MudlbXiXx9GBPMN7+ wkQFu7cthPDU5aJZGzY2j2YTGaSV0At4QsOp0mFw== X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= 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 2.51.1