From mboxrd@z Thu Jan 1 00:00:00 1970 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 94D54384242 for ; Fri, 17 Jul 2026 07:24:06 +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=1784273050; cv=none; b=AM1mL8t9AxFIQDmLDayNA4otuTIN5qRHQi1uZKuf3ccuG67YprB9g9x+wXprgC5sOAT/+EUDAQcrBasSKbi0LNtM+OeZdCLnvwDLoSla7EEFYOZI2hHfACZuMxSQr8NaZy2jYbgXIxi3n+rN1kKen9Tyh1Hm5ku/LccMh/bujSE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784273050; c=relaxed/simple; bh=Do2vEEbKffBKIoRwA8XTtrCuUyMId8s9a5j5NUcntlY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=Zf74TgtWzv8v2SkGmAB+nAyMyTEaCqUzqRZMrHAUP4hxa7/ICQW8URZwYIhAYj1NlieZfqE/P9O4yCxLTCLgvkC3aeN1T4MPMkutZ8A0y88Efu93Vm4wPM73quRH0xNrDe/iUuiRh0ymY51FNR0TTtouQnFD2/Vvt55YuyuvmVU= 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=fYXEyAss; 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="fYXEyAss" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1784273038; bh=hfSDcA/VFf5O36XZ1jIbDeiIvlPOe5N0iYnQa5D5SVg=; h=From:To:Subject:Date:Message-Id; b=fYXEyAssbfHboxP5QdcQ6RM2gOmJnmbbZPGsTBD8SPtT5gd9wFAY0UGeMT42MDXjg ukdaXkyvlWNUDsUmO5b1iLRbYYMRG/QeFAQFz4251JelGmBGAojVXu38G0dj288PxV s4kIBlvRsQ0tUQ6lT1r3APLRPP5/q4mEgB0ZxaLk= 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: NvH2zBBgt3uT+fxW0L8wrgVeJHt+jPWGxtbxNdaY5mB5M8UiKCT1jdwn anSfhTGt2+0RHgMoI2b8cliNlJ51vqCU//jY98UOzfoGgoF3irMP9eBStFzx3/IzfCC43Sq rJf4KCGmEow+Kj2IrfSIuT7b/0rWejwoawp75lygQKE2RLdCFOfd82fAmJYOKqWXqUd9hNU KQavgP45tZk6yRSCO4OxYiAnUXDDitHhPk1foD2MbBRihvpswJTbyJvNuDQOxPFLUpkG/OG snmgZM9q0YIEs51uhTL8TeO58+RXMP2r/CGzhZ0APRZZ2a2C3P3IaUqWNLXZSYrTZp14bxw 3SWfbpEpD5YLQKMdZm38rIW6RX5y1uYIlR6jKFPYTbdReytKMj7nQMdcfVTKVLuJWSySqlX nbZj2zJ5xpN53lQTlLbUuXLCH8hrDbs9oqjCj40+S2GRQ5Zoeejhy6p27DRcfRHYS78ttAY MytptmvTqeQd9Wv885tkC3Zwm5N2ueOw2WMJ/c22c+ygv2g4mvJKvjP9Wxbrcv+w83DDpu4 +7G6ZdiDG+6cx+d/6/S8qP5ekB33aZR7INUy4w5chZI4smbQ1Ye9Xv24p136iNrA/iwybO0 UkoXf6mhpacWO5tro3UCdqCIQca5qQuCN4xWGuMdkv9nN/bZdwonnjkCgvfjH2RN+Ivy2vs tSfvq9xj4XfVZpjymyQzqLXC1C7o9Hp00Ic8jjbhfljxRVHhlA+c9zNx7LvnUbp7+8yr+8Q gG5rKhy/z1yb3b16w5pEnO1sGira376gF7iA0CcW1oYOTHv/gQgnpqGF+Up5rhWMP99G1Fi 6YabBBkFDGrQwNhNqkgG0/m7zOveTRIqiUgq1yc6ij52GWD2jOl8qCbyk0J/DQhEQrA2KY0 QUnzooMycSChzfHBVQ0p+aMKD/rMQRYNCKRRq2yv4YRykiWKSObnTce+FJHWirlvND4cr0K DlmFOavxP+whOmMeyHCh0OO1lyLz+4iGHIO8Xoncj3Cadde8cAUSTNZG+pekVBneDwexVKR u4CSYL8hnsoTvk32+8XgTJa+EB7Z/alBWQplHg6g== X-QQ-XMRINFO: MPJ6Tf5t3I/ylTmHUqvI8+Wpn+Gzalws3A== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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