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 00F51CCD1AB for ; Thu, 23 Oct 2025 03:31:37 +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=nQG0w7dhU7Aew5bKV30plkPn0nBnVdgTnfwSbxYLntU=; b=BZOqes9ah0n3RqgE2wT8cQ1RVI H9Eh87UDP5W7vETsFTB6mO8ic3ELAmKY5PyUgW8fz08YUZ4xJVIZlB+HH9psv/B4Nb9lRYcGSfBOo mWvA+ZSHmVpRrZua3nJAYV4ZBzDQ6ncG1feqdxhIlH78+8lXvzDEdvAD4aF/K9HFkGUhvpNfZMZc3 vF+dIXNxjL14yF7cKQOia7nLGGBjA8BfxWwVZwgEyMRPBAnBzmFRdOgGRQO4ylTtAwd8X0vMDjYKY 7SmZRwo5wB1FMxCLPX3NxHcHfBFVou98aYkqsNp02Wu1SofvL7l0VpJjM3BIzy8wYoNqDxq8ki2CW tBro9ALw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vBm32-00000004wCI-01JE; Thu, 23 Oct 2025 03:31:32 +0000 Received: from smtpbgbr1.qq.com ([54.207.19.206]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vBm2v-00000004vpy-3qZQ; Thu, 23 Oct 2025 03:31:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1761190256; bh=nQG0w7dhU7Aew5bKV30plkPn0nBnVdgTnfwSbxYLntU=; h=From:To:Subject:Date:Message-Id; b=Bl6Jik6Jxip/hTqiPay47yYQOKK0urbSQ+11av+8o1jdXKbPTwFeWy2ByYb9MANdS q3IhxOhu5V1re2mD+0huqAId/Z7+805LGqrxh3HRvCvbq/7vy0IiTM24aCmGqyjRRQ oain0HVh0EXyaC9aokU+vXoMQ5D2CV3C4CVOUUJU= X-QQ-mid: esmtpsz16t1761190254t76ee6809 X-QQ-Originating-IP: ry/u4/8KR4C2zosHm3ALD9iejKzqUxaT+ZTDF/OGwF0= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 23 Oct 2025 11:30:49 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 13604929082984056362 From: Chaoyi Chen To: Heikki Krogerus , Greg Kroah-Hartman , Dmitry Baryshkov , 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: [PATCH v7 6/9] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Thu, 23 Oct 2025 11:30:06 +0800 Message-Id: <20251023033009.90-7-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251023033009.90-1-kernel@airkyi.com> References: <20251023033009.90-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrsz:qybglogicsvrsz4a-0 X-QQ-XMAILINFO: N+aOzryTDkdC5TOsXVCC0WKSzV5F98nb9pI8IwZiHMt3xvfr+pGitVZ4 3l06+XIvSFBbVjWWdoqBF23sQYxAQBo/q8gkxB3OvdRna9WfofjaBfSYJSQa+uNkXT1UAiE 0tfIhEa9XHDqR2CZRDM8GCVouPV5RNrPTuA1CvhWmA/FDIVOFDB/KfzhVkunwY01Nhz5WKh uDArCOSG1pUdR8B5MJijKDyzQ1qrPOMADTpAKAAsG3ocHphE4nDahZELBlfE9CY7oL/ikoS rNxSClIqQiKFp3jTEbxOFMhJ5aUeUs5GAsz9jasGqraYRCi1USNYGUCM/d6BHzPLmNaLWKw 2SuJTq49Rbq/g5o7brJfXMn9wGudqA6jLBk8iwqujqdbXmf4mAFyvwHBC2TR0mvILHw1cGB FgvwGbeTE3l1epCVZcjLVby0TDKAVXCIw23RLtvuaoW0DPYreYmW4kGMWOHHPSKTNgSLGzF /NVs+B74nde/Jq6l+mA/SzdYJ79MuTauzOqkGxZqd3qzqhSCFqbnAT8A4I5Coc1KUZ2BQEB F8I3tKL1HhR+KkZg3I9YaII9WTKpZVsodsXYHhMmWGjWFBfI9jlv9QbdcJZa14XvIWQqAvt EObHv+6lGrMo7oPoFDug/K13KtZnYQ01OziWVx769wI8RjqRfiJLC/RUjWe4dxUynfS8Ig5 8mMCZWopgwK6CpYGHrT+nkKysuJ2IBpJckTl/HHnCQpxpRn7uxHXkUnaUdBLtTbcK+N0jyh Va2ZUhxlhF6TH5eA4NG0hLhw+bbwgRag0pXQfzhymvg0EBYwLhXM35SukPIDtzgSCrTISlJ iUGptvRAz3Qh/Pr+A0cQ+8Osr1HSlkK9e8bhyKBfku7wKo8nbKq98GSRhAChXiBSirh9lwk ngMUlHt+fG0V1ZrjhGc94d7aETWXAf7lL2fMIGi0amDyMGdwHJP6aMmCzQknQ1NRQ9sODUT JpbeQIKErwpzCD6n4Yly9f23vN+pGJ7yiKOaekCkW1bkiYWevbe0PEqCdZAY/Mq+VmzCRmH jaOTLw/71n6+4XhZahiPb1uMFTWGVyid8AaIroRA== X-QQ-XMRINFO: Nq+8W0+stu50PRdwbJxPCL0= X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251022_203126_769721_0C29C45F X-CRM114-Status: GOOD ( 16.62 ) 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; -- 2.49.0