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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7D2E9D1D86A for ; Thu, 4 Dec 2025 06:32:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=sEWMlrnina66f1mkg7MgIF551DMwzRk8lseSsYVXv/E=; b=mqejF1WT7yOInFgHmObol7/P3H g0t/fO3GJDFLYuNXuHsaolxvyhsc6KnCoiCNjw1t5dOvWDPFtwapAlcBcxajeG9KW4x4Oq16yWyUs Auv6/iE25bqkjTkhC2nP8dbdE+TrDtgOOENGMa9ljPlURcsh23eQ0A+Mrw0Yz9jJq0FU5kfBynUH2 R2b4RhFA7DYADSnYF1kjDHytcfrJVZy4dQZlbMYhVWkuc3gBN0QEgBYQw/45OeifiPqd4LK/isnjW TdnvGqKbf5GiIVgsRmYdxZShVUGwa6Fn6vWf4kw6Fs/9PI5aWOFud380cXOj73xX0T+b33/2yIPA1 t3rlp7PQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vR2tU-00000007Yew-3WlV; Thu, 04 Dec 2025 06:32:48 +0000 Received: from smtpbg154.qq.com ([15.184.224.54]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vR2tM-00000007Y4l-2JFd; Thu, 04 Dec 2025 06:32:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1764829916; bh=sEWMlrnina66f1mkg7MgIF551DMwzRk8lseSsYVXv/E=; h=From:To:Subject:Date:Message-Id; b=vvP/kPesXA+7oHk/b3ZYPbHTOhJK625t3zAuQFR9PGinBsSIfpW2UEzNbv1jwT16J rwzjI2bdtIBtj76/uC9OVO4+LGGz54af+8SYitr6gO0WcpynaRQGd4q53UweLJ6By7 KTFjXg/6N3C3Npv0+9S9CCUoMZm96T2IbN1BnMBY= X-QQ-mid: esmtpsz21t1764829914t2fd6b4c4 X-QQ-Originating-IP: hZcaALHRrEsVfm0KjmfXoYxrbuS+HXMQE8GZuYKKMRs= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 04 Dec 2025 14:31:51 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 15523287474002060111 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 , 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: [RESEND PATCH v11 08/11] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 4 Dec 2025 14:31:06 +0800 Message-Id: <20251204063109.104-9-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251204063109.104-1-kernel@airkyi.com> References: <20251204063109.104-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: NYz8c2bcbB9MQnNn3zMpWCw84OuTnnaBtR3IOF77C7I9xS/PAALwSJ2H 0sL6L8qVFgwchZt+l6eR8k+fogUmYShJ9l/KScDn67FYQsR3lOLVjARu4arUMycW2xdd0bs LrqirVpHnLXmivtsZ0M0gV+YOl1/UUm7PAhwElTKIilhOlNrBS6YKSQHqJl+N2RWWZVD/0W 1Gp8vS0YzOXD9VA5CUSr5hm9j/ZAtpx0YfOqC+mhT/ygnzgzdzrjyI9nEMx4YskoCMcM6pU k6Bm+3LnsKiw8LeIQW1JHUxftNDjYnbSml2HKqwPDXal+9Nam5QLpNJOzF7AxE8mtcFaJKF j+kw51Luw2/lnsLOtALM19NPaVtw1RPMC4DiqcMfE5A0iCUwzWinwpSO1QJ6C+xH/k/ZlDr 5TcZMmEoqnrFLKSFV6HEWCRG3mUC1rCC4mtPWO0HCFAHoR6WCgRIae9rrgadxU7BXiLYZYN kZlN9J1pPyJb/BgHhyBPNg1nSBqVr6POvXj0A/fDg7GIX1rnPZ4aeRSxcnInxd0kQ99cYGI FHxyIQbsydqYZtsxqRCcEiDt18qNi1SpdM6qFoQyGq0jz4i2nzzMzto67L3jwOowWxXdhV6 mI7+ZyerZ3B4dHlVvIvjPIKeaxziFTv9ZHBa9x4mn04YeL8SRjWsXyVycgd/Mys6tKUgtrt 9wPZNXEl2na3JBViG0/ene0HUdzGpDsOhuT4QI1GPgkiRLEK9S+X3kj4UxislBVJRDvNS9e JAS/NmxYsX58WIBfpTy/IeTE9kiS+gCSVWT0zkk53d/O6vLHf9wWuuzi+DoHPxlI+D7r2Dl 2Mc8H30G3WFy+riHawgmTyyW+kBtAa1JmG7dWu8mgc+XxmKW8qnybPU4HAFM7LLfIFtJ0RF rz8E/aQ7o1F7gcdbGz//iLHWfrbuSPtnHMyh+gVPprFZRBc8b+YJQOMnUWRrNWg9S7yJXP/ SlTTEZAKk835sagmMqxBjsTqEpziBZx4moMEh+b8Y/hkECWhpgXApDE+SqyPc/6EFS468vY SEk1viSwTtoQWb1g+ObxtpPs5xfWD4WkIC9mpphw== X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251203_223241_435237_5860B31D X-CRM114-Status: GOOD ( 16.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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