From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) (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 9429E3E9C3A for ; Fri, 28 Aug 2026 08:48:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.204.34.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787906922; cv=none; b=kS4oBOyg3yRtqJ+D91Wut8SYJtnp9i7W9Y8L2nuGr+Du836hyp5kj0MQrM7fc45/CfhgA8JPQlvmyt/f6Zuup8Y32WRxQxwYjzIbudAnC8NgMCkwvUvoNQp8dShQBOneVCq/GGB6TcpbtXG0q3n2lpB0q5NOmLqJfNof/YSNeCE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787906922; c=relaxed/simple; bh=HmqU/yF1WHT7McoNWyBANu3omr6KnsrjF+SmFCJUV50=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=jS8Gm1+SQh3vjlp2tJb/MSbMzOtdt59SGyiPU5MbXezlHOc7WgmWC6EwEale8DURGo2TYux4Dbf8boa3sHE94MR5LP83EDVbny6jQ3xPPPbCqOnY7fbhutn3gyL5afuG4Mg7ClzONF+ZwuNCGKRcegykZeqxSg+RWdy5Cn1s5xY= 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=Ax1LbDvB; arc=none smtp.client-ip=54.204.34.130 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="Ax1LbDvB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1787906903; bh=bunO2t7dsNCTFo7jX/DDz1zCMJsJEq2YOzLyo3nYWTM=; h=From:To:Subject:Date:Message-Id; b=Ax1LbDvBPJY7WtMnZHNJx9FYPIPDf+w5USgPhZ34xWWYW3rTXohhnrk4lgoIwNxy0 wpsH5x1ydsLLCCSA/0vL4C5inrVxQCrvy1IYUXDN5HrmQAxaZUvlr1HVtX0wP/u8xR E85y2RYPrbE/CoDgyaZe5TQUU5pRUGnznfLa4nos= X-QQ-mid: zesmtpgz6t1787906902t94a8ccf7 X-QQ-Originating-IP: ePzt+A5uepZSdMsOn0wfVfxlDaG2UaMeos7mmM/yUWg= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 28 Aug 2026 16:48:17 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 339802763641425583 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 , Heikki Krogerus 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 v7 6/7] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Fri, 28 Aug 2026 16:47:36 +0800 Message-Id: <20260828084737.565-7-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260828084737.565-1-kernel@airkyi.com> References: <20260828084737.565-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpgz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: N9ponxXGLTJp2xiZqtP41BfCtkPmqVBS3llieXmFyUmERgM1hquRaGxk hSoqC3HRtW33bR7QClce9eA1uihutngkUmKpAPjSoPXTOkDNDSM9rovrFaGs6uznpz5zEF6 LeTkjTSt3fypy2clZAgHM+mzV4qpd5+t0mPtwNKHxVILkFnWLtAABB63iIZaZ0fkpmsdqdF isB9IHa34SQdgBDN5UBQaUi5ynNUXAmsWMQGRUEbYadLXy82c84468yT04kP8Hs4yUiI4Wv BGgmnhPBOrkZI2FKYH5J1ywGSWk+wMBK6fGoGpU0wJBmJbomz6Vy7CzR7m0fsXZGrXV6On6 JRNVkguCgBC75IAAZhgFWcLI2nK9JiTuUNxFtrChpXKoR3FbPxsgXiW6OIG410wtB/FzRyI 0WqXY3BLHWSQ6+fV86b63HiItFo+s7HzosQKVwgcGmi8nx5fJDY2i/JLPh5z+4zEic/xUJo Yyc7y+xjcq1sBdCWTyft7U6dERmVkYy9fYapQuCDX1I67EdeYjgFz7tunbl+DU8ON/dT71W FBp4Tw2mCTTtBKXMqM/74svnffzrQmdxGC6W9FnlmuscUZKR+xce5Hks2bkAKqBuUyhlj4h qXQKC0STEuBPd0G4AFU+oM5/LsNrqTpiJ7m2IpZkhVK/NK+DqyXZwCQsokryjVFzOKxmgd3 lKuYJ/ioaCMVI6SpeD84z+MTkL/ahT959muw0gKv4YWErg4ttpnEZ+GKS5OZ7BmmcajGYiV taoczSiqStwxTawB6TtNc9lOziqnMXw0xgauO5v1RqHdBp9oybsghz7RazFDQm6U4YRnWiu UndaNh1epuEAan5RaeWcFn/ZYcLdBizavv76I8cwgFPam+CjiMHKfy2KtpvQT75dvOdvQSL p6VvrL1R56+vqdOupUX1efp5lf4QQ2KrjImqN3Qv9AzhPgGK+9mPF4ytQKqGrZbOxWx4MNq bUsJ/9Pfde9/0dTO+2tiVNf/iQZw7I4/uHLTL6YwxDWhKonHvWcxeYdVGa69lvosegurUmE h87DRAGm5VQRQlXknIh5zPV+X9DrM= X-QQ-XMRINFO: NyFYKkN4Ny6FuXrnB5Ye7Aabb3ujjtK+gg== 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