From nobody Tue Dec 16 02:58:46 2025 Received: from smtpbgsg2.qq.com (smtpbgsg2.qq.com [54.254.200.128]) (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 0985E314A8F for ; Wed, 29 Oct 2025 07:16:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.254.200.128 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761722193; cv=none; b=LQLqHoiDEx7C28HCYXFs8n58BgWAemIzyaOIcd5mkeIpd5LTyzaJsh2LVJ1ffSN6A7rUFtHf2FAO3lAoELO0deBwIwx1G8nsOvkTFzC1qM1Lgh2oE2Agf6E311BsBIN9jsVkwD4vuNIjGE9lRgbn5dkFQHnxqB9OYENSEabYj9g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761722193; c=relaxed/simple; bh=M4nUEX7h4FeSk6XVEQszUpUpBE3mjUtZPXnyDXgdiFI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=B+r7wyxhngotZCSZmMAnxGPnKtNOcNXHLIn4rq1l/xHLH+mXEY0K3RGe/+lLIUBpk6ZCFeIfXllTO1NsDC5059jHsLCBrrme30U3GRu0mDiz+6Ts8+k0i8Wlk/rFXstgviKH0VTTJBoz5Acz67oV1BElMbpTD7pPklCtXhj0368= 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=HN//Psng; arc=none smtp.client-ip=54.254.200.128 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="HN//Psng" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1761722122; bh=nQG0w7dhU7Aew5bKV30plkPn0nBnVdgTnfwSbxYLntU=; h=From:To:Subject:Date:Message-Id; b=HN//Psng4UWIAXQuItcyhOMHu7Dq+gDdQCi4pOBr2/h0pxW0oUD3mqLm5oJxAQb2/ 3Dr9I8rgxmXpVyH9f7SrNuUD4YKBWTja56UYiYU0YEELUU/+yMNXPvV/hdmRiDTIo9 6agCnidfxv0z5BNWLqVBBX9QzUwWVKopfAySwPcY= X-QQ-mid: zesmtpsz6t1761722120tb092f96d X-QQ-Originating-IP: IvyddLy9KbD2cvJM24xB9IzAVzZki3T5MpHuel05bj4= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 29 Oct 2025 15:15:14 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 2981954368563909056 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 v8 07/10] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Wed, 29 Oct 2025 15:14:32 +0800 Message-Id: <20251029071435.88-8-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251029071435.88-1-kernel@airkyi.com> References: <20251029071435.88-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:airkyi.com:qybglogicsvrsz:qybglogicsvrsz4a-0 X-QQ-XMAILINFO: OW8nL0XA5GqlUhPJoOErPUPlgT5YGY1oJwz4RFWOF1nWFluuzq+FKJOv 2m5x3pEHURyNACWM0xwmzEsvq1mgA3PG7OK1CtVSl5ocgS7Ma8ji0KqksXb1rx8b2DhMdLf PNNGnfw63KjILlIF/Ef2A1YP2gjgjwPAi6oyYGMXKygALVIvyHqcgVqszyliI/8IPilgwC1 w9ugLphYuNlgDcRW2nVHoxcxROg0zJU0rzfMbb4o1OD0kgweWHExvSDp0A7KeGSJOwGYE9y mnGekSxw2AUJATY7pEav3PYCeiry2Pmcy1Iikmx4iLorVs2vbul6KeU9puBXcn1gQpd68xa fg/XL3pEvPz1CaeUOMGBs/fGD/r97Dt7rQ0QA/DdM0wD3q4Wa81X7/Y1imBwH0BIg+jxJ9h GkxaS95+55Dkw1gc7fyOJPaE3JK/4FNV5DYoEWhlV4WeCtHzXgT4+9eo7wDBIwFuWocnF84 vjht4oKAp6NSdOpXM8DWBCsCBlND1+nlUuwcoo+gPvpOYXolcc88PuzpK5rcIeVPtCp5e+H 1+4GfkZ7kIcdGg8G1umhrrw5BeW08N2sXDqgY0CPIJFLgjyezxiFKISvQTU6ly+O/666+ye WGZ2CDmFh54zE42xnVEe29+cVI0llNgYqrlMV+NiVjkYc/tWzd4sBpHUjrAEK1k8v825Tya XOx7zzBYMRL0UYtcr987w4DchMqdWk/BdDRwXh64gmAB3701gTYT7oLnCX/RS2lRK9Vi+SC +mmzDBXPbxBW0vdvaWqoJAPhobZw5FASZF2D5U6CeJR3h/h3dlhXWXvLXIccXm7NI0A9znj 5kHa6074x8MbR8lhFMsVL/8EVFUSi7Tl50DJ/P+P0nuJV+EBVmjPrqzJ1Tgd5J6Y4BhCEq8 TH1heHdJ9+mDiX0H7n11DSwLeBxE7P3CxsQVeZzgDZDb/D9Z7Yj6wv2XGhivAEsfeibxnhE BD2vFtSQIkc4+QtID4XnDKHSjVvBSwQjRXwkIXwTrLpl467yOms1+kxYLHTVfiRluezK6is DoZJl5I+FqB51Dn9rD6nQSXK9GXit6YgMkfMVWYw== X-QQ-XMRINFO: OWPUhxQsoeAVDbp3OJHYyFg= 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