From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 252EEEB7EAC for ; Wed, 4 Mar 2026 09:48:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 88BC210E995; Wed, 4 Mar 2026 09:48:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=airkyi.com header.i=@airkyi.com header.b="c8WHc/0k"; dkim-atps=neutral Received: from bg5.exmail.qq.com (bg5.exmail.qq.com [43.154.209.5]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2EE7C10E99A for ; Wed, 4 Mar 2026 09:48:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1772617695; bh=R2+PAKy3j90tO2/aruykNQqG1CqbsF2c64m7OhVP2Wo=; h=From:To:Subject:Date:Message-Id; b=c8WHc/0kmr66ZsY9wIMA8QpPz36UpY3DWm9zi/bZH7oRHWgWN0LfDFgxjUu/vZwhs KCRcvHWVSyNzVXrAvHTSa/28NIti/aNTwfA93ne41xeH2e5spohguPfhLAtFNnWhdA Rvkv91jJqBdjT4pTepTWs/0DCvM1q1oJMRTyKQdw= 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: Md8NwmqZYy3fO3QJZffJoQhAyAeyF/zYTPikgdGhDDafogi7kiqRdzmH tgKMahXSRF0F/if2QH23KR0mquB7xaQPfAhPa4aMr6jk/zg5GDakekeQEz0D+3CYea2PJOc 1DEZwqE/LyKOBphL1JaswNlYSAjAk0nU1a6XC6piM9Bg4hxQsX0TeD6Fa3PMdPKojfWnhbW LIAzTgOKEpVXQuQkL3oGwbDNQwlg6XfHhcho5x9Kw9dhjBS8uto/KP77FN6jGlxQWdHqsTP i/KjT/E5LKjioW20nu0EsSY67uYf7AhWq3fpii2hTFqkmBHkhIckD1o1vr1/2G35d3j+jGH 0pJxCHCUGS0P/OYFngGyNGzbf9mx3prjcO++U5NC1NNc6yb8q09VKFgJE8fX4CwJEzYxL8j mCeuDAnM4u0LYtb+kM4RDA9dljlfvdRv3iSlHihbTLA+28WQOf/VA9yFlOKVqnAVqcn99Bi dmRA7+2a22xQQYqknhXLDW8NwReqiK3bgybBUUETBKGt9tuM9gO4o/oOV1Y167+IMlBZiSS wR5MBp3/LyuaFKdvmjFz00nc9x5rIXGZoc2MMGVRs/QcUzBUMII6P3DeL6qRV2daI33Omvh tKciV0uf+mf3MKGWHcvQlRsnn3k3JwsTbQ99EWforUm0vdG8mnyTccB9XkbCWJqsmtiN3N9 fG8/2WU2EKx3f0cpef3b21l9GHtN0La0loliSsqHjGWy9KGv67x5s3SP0n8NhLOJ6akgB7/ o4xEaoBT67GtcabkMhKqLmPd67inDbay6BFvgv3yA/Qh6GvhEer+pujM9T67ob6TEPI1BU9 wrGeDc2RsUIUTKNQUs3qM5QmjQ4SAuTQ2R1OfceidpgMFejmTcgnO52nmwEyYh3LBOBxPAH PCdG5HnxgHAyX4/kivyoOdupn13AfDYz0tbIuWzNkFn3tiLTAgda95T+WMKEZX2IcgG0Nq1 Lq+5f8MMYk8lH/ePZ9q3zSYM7CaHda7aUAwMO6oTqb+JDtEuWNGrZlp+tcSHxVzQVZIWxGG Yz7lkQSVOojJzi6qEOKGx0FAtuycy1dZRGfV+PDg== X-QQ-XMRINFO: MSVp+SPm3vtSI1QTLgDHQqIV1w2oNKDqfg== X-QQ-RECHKSPAM: 0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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