From nobody Wed Dec 17 04:12:42 2025 Received: from smtpbgbr2.qq.com (smtpbgbr2.qq.com [54.207.22.56]) (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 214A821CC7B; Mon, 8 Dec 2025 01:56:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.22.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765158968; cv=none; b=FM1ua4Z8WOiL/CQ2QOzaG9rXhzLHy8WWoudmLAjO99/0Z6lZCjW5uJymVKlMIOg56u4Ov8eFwhuSeksdd7CpRJNphsGDmctmhNIzaqvLGcKbpIh3cyL/4ZmC1kMKNmnGMI2Oi3VaZV6DGECxUFqZGey9nzxn+kNfu/uqMw0S76Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765158968; c=relaxed/simple; bh=ktQe0TBZJXNabRClR1zK2GRlgnwznm7iN6OWZIxNePg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=SejHaIo6AOVhs2XbBeJnVDWjZ40a7QBITMhZK7CWd90hvXQgJhoHWNR4s5+68JzMLEIEck/nsneAPbvcHxDPlrOwvp5ixO/9TVpmYwjQkaL6qwwkaVofVAnwUzaB+5x3630/yRv1y2MPVlCKx3zxIDlopvSmpL90slB398TswOw= 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=AABAJCHo; arc=none smtp.client-ip=54.207.22.56 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="AABAJCHo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1765158947; bh=sEWMlrnina66f1mkg7MgIF551DMwzRk8lseSsYVXv/E=; h=From:To:Subject:Date:Message-Id; b=AABAJCHoAT9gtWhnuzzQBfRlUkHiuGZ9ex2JhRAOmn6KKlFOh5CVNQ7Es6ARLzc7C jGnp4Juhi9EwxtiXJMueMmQl+SLng2gHK2fg3QzRMZ4L0VNiBqef3HDOfteHxzWMkj rDouv7H8K9Pl/xTGKBuW+65Xo+oYKQweIV7t6dkM= X-QQ-mid: esmtpsz19t1765158945t702c369c X-QQ-Originating-IP: YhWIQ0V3ycG7CDzXdW5g+odsXgIz2Zc7DYufLSVOhgU= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 08 Dec 2025 09:55:42 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 3081592596976670402 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 v13 08/11] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Mon, 8 Dec 2025 09:54:57 +0800 Message-Id: <20251208015500.94-9-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251208015500.94-1-kernel@airkyi.com> References: <20251208015500.94-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: N9DIJtFs/avns4hvy0i9PlTO1llTc6+s5Akmp3sFsxKLt3Bxl13jQioL e5tuEpL+kjb3vgFom0lP+QI4HOK6fS+eS7txmoRx7kO1ZeKy9c4uFQkIvuTxIKPuV6pmQuB aRwiuLyqgaK6OSrCWZom9fy/fOFFA50SyU47GAvOpsr6XgscYbgHytExEuxd07EB1uk90uZ ij7P0t7vgqT7jPUemHLQKM95gZwNBx7HpVxL+1EhUQZSgUEchLDprZIu8GDqxH9ewm/fDZX 2KUzW36QnG1fw9bEDmNGF9OuAMlY+6be5wC7LrOhcZ28mb3fo3eDP5byS+DeiqnpPCs0kvo FPQHYQq/fDgzvV5UaOYO/bpLt+NBgjz9mnHkFQmfAwCdGDOUs+5H13roVnMy5petBV6MFYf UB1g1IG/xWPypYcDV6/+x8hLxEj220Ro+dwGGL6VnPeIkVgXMocxlUYXXWK4zEDkrDRTl1Y tU3U9qSYWxpYfCBaQUJnKieCO27NiblSyCVtZ2zUnCiJGxFg65drftjaFdrlzS5b67u2vzj 6tnbRVPBZHjyjK6JPlT2KC6wS+jj76GqD/o5uywiwoQqnuxtnPCrHTs8XDkD5CfJM7frjHs uqKK4pFIQ4SgayCpsdfwCGRPCk9ck+zAe+VGbLn2mJ13oO1EjFIVAmEerJUZXWncrO/O0ju nkdkR9v78i5Fsvn0RQhUWl3l+O2FfQJAhWCH52jmH5onJGHDfUs0NOB2tIIm5RRU1aiSvho IfGmgXRYwkF55u5e9AcwJY3TMHEwLmnuboeWsFUWaJ9tURRFEqCWMCr4i/HJS6xadu0IrKk Gz4oqpRQ+9zxrgEZj7YyMy4HeUNdB0Wr/ZmFzUf4GPRO2UX+WjCRVSoBv8sQGcWG2+za/lJ hqeIuONZpFDDMZpsojbr+EaGRgNpnMyJmU3JEmprahijiOTWqqrbmtTBJRTi6Q73l6ymKPi tMEYK89MnBRUKaLPgW1t7STLlAb8XYGMjSqLxtP229V9AXLo6RXeOxnTZJqlaf0SKAvANXx QcU42cax2cP97XEo31lB4nRnfYbm8= X-QQ-XMRINFO: MPJ6Tf5t3I/ycC2BItcBVIA= 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