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 BD418C44517 for ; Fri, 17 Jul 2026 07:28:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 20AC410F46E; Fri, 17 Jul 2026 07:28:42 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=airkyi.com header.i=@airkyi.com header.b="TrDA4e86"; dkim-atps=neutral Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7CCCC10F46E for ; Fri, 17 Jul 2026 07:28:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1784273316; bh=hfSDcA/VFf5O36XZ1jIbDeiIvlPOe5N0iYnQa5D5SVg=; h=From:To:Subject:Date:Message-Id; b=TrDA4e86OYhXOJ5eorq9vARqBrIqcXzkcRxf17spzzGPG0tW1ZiNzLnQbOMK/PPaK vk92bLvrinxUVCgkJp/eLIKmxw6ez4LgLQLJqzSLOJLJkS5GxlEqcnEg0+BcE4oDDX 6F99Dxdx2qeFJeKwhlJgLxbKrt4VR31t8zOI6PGE= X-QQ-mid: esmtpsz21t1784273037t8aa6d3dc X-QQ-Originating-IP: 0D5wUK+GE2YIGxT4HuuhDJ2D57emU1+Gs34WtC5gClQ= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 17 Jul 2026 15:23:46 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8582860570799389207 From: Chaoyi Chen To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Vinod Koul , Chaoyi Chen , Sebastian Reichel , Nicolas Frattaroli Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-phy@lists.infradead.org Subject: [PATCH v3 4/5] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Fri, 17 Jul 2026 15:23:22 +0800 Message-Id: <20260717072323.96-5-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260717072323.96-1-kernel@airkyi.com> References: <20260717072323.96-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: NafziRg7Bx69Ky8gt3DQzRT+xGbXFBs9cRWJdnJvreS+EQ1D1fkWb3NJ 7msIhaRgDOCnWwuiOSxOMPbjx0LivMosxYIU/FN3WwEDD6vgG8uCl9fPwat9pKprWlZt8RH SoaS9hyBisridUJdmQG7R9ZmYr/34hXGie7/QI/qfQ2rCrMs+3NAB5lo13WtQQIyro3myF8 2VXMwzciX6t1K2oKtS8Utzni/Fr7UHd0VPWyu7GTP0fmL9r3o3snaFcGekrXMMlzX4EXs/M /V8E6T2q4bGl2quBcXjcqTJHQg35UlnDSjaOPOag7/iwW8SqvPSVnClvEVw2+KYjqIlCgpr n8hHQwKcCmx/+AQBsKrPvP/mf3b7Slsylazasal0nIBGEPc7VDO2IrjEWIg+8f1jfk1SeOF i/5du4syngtAvYE/DT4WNYOMu2hMTe/IwArPs7a5oX5NXaGLc0pwMdkql339uVEIbn8a5X2 9cauSr6PX1FaW6XmE953Ajuy+t5iw6jhhHOFYYt5MzRdQ0owk5Q/BHMksWONCjjgIxmk1Oz vrQ4yI5vKnkTiKbA0q16gzQG0obcl9up3oHiUMk1sKQ2DrhGTHJVDgOsw6wXdgro+y3DtL+ PMiQIHfKrT32dqAKL3TIxWWBO37tb03bccGwESJEh5X2G2+VSeVHTZqBAQYoT59i2rV3f1a xe6fuuIA9J3w12P8UjAUFbkBgt2QqtfucMak2qjDDerLvK4hhGrrGccUDCU4QJUTeuxbz2J xwtc/udP9giU8rj3gFxcx3Ix8jPma8r28xhUpwVVZ5MeWzNkqi6HaiiuPHCj/2O6KFkOKYu x2x/9WOhHSSG2rO8mzSOu3XMNtnEeDoyv1B/CYaFuBlQZVBVqX79ke9QV74VjEVyVS1L2c8 wY5YeSV+XRlvMA8ZSCzYWTKjuhnFskULQN1SQHOODCW+RPk1Pl9vNiXjrcQ4nLOoWxhljAo 8Yu0zrhz4aI1c8dlm31rChYTnDCyO85TZWlpULwgOKdg0KMCGkudHz+nCoyNMZP4rZy4N0F L99JX9t1ZUv95yKOyPhlwcwjEuSnZtjRi/O3UdKg== X-QQ-XMRINFO: Nq+8W0+stu50tPAe92KXseR0ZZmBTk3gLg== 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 Reviewed-by: Heiko Stuebner --- (no changes since v1) --- 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 190cce9530c8..74e1f5422a6e 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -157,6 +157,9 @@ 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, @@ -220,7 +223,7 @@ 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)) @@ -386,11 +389,14 @@ 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); @@ -1027,6 +1033,9 @@ 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, @@ -1119,14 +1128,14 @@ 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; -- 2.53.0