From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgbr2.qq.com (smtpbgbr2.qq.com [54.207.22.56]) (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 1347E2EAB6E; Wed, 29 Oct 2025 07:15:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.22.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761722135; cv=none; b=ZPt8dlKfGv6iejj/BishYv/cjdJ6gxeB1Y2ooYIizONW6jtyVsgKwbQeHbC3Hzoiu6iGKPuu1+XGzD89RhALYPo6TDGWyShaM0ueQyItpZluAyg/PeyPFng8fNtRKjSaKXmAJaiPlIsxhU0Dem/kYSmP08ZXZJAUd0ZvIES6FaU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761722135; c=relaxed/simple; bh=M4nUEX7h4FeSk6XVEQszUpUpBE3mjUtZPXnyDXgdiFI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=nbubsgVEQHYejV/MfeFaYNYntErOmVYTXwHv3/SIAzszDLyR5htLSQgKzZeHQqVbvdcSj4iznhqOA5l1JHF9bloxLMIGdzCKc8+l6VS+8/5fUrk9tbvmSCL014mMdXUfD0VRAa9SpH3OMziTANl36hC9GMhvHFi7+d3/9y6Rg3I= 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=kL5uI8/l; arc=none smtp.client-ip=54.207.22.56 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="kL5uI8/l" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1761722121; bh=nQG0w7dhU7Aew5bKV30plkPn0nBnVdgTnfwSbxYLntU=; h=From:To:Subject:Date:Message-Id; b=kL5uI8/lTx+iL+xyOPTtiqHtxM49QpNMQckdTaCCK2C9jKcCHMclMf272p7XIrKTT Rb4Ny5vaxEqj85biYC8Cw1P1okZVg//3e14Q7E79Z5iMbflK8AdGJt4AgS1HJKp1x+ 0VOWxV5DwUR6FBbhDKTg0Lhg1sxLkOyZrkixxBbc= X-QQ-mid: zesmtpsz6t1761722120tb092f96d X-QQ-Originating-IP: IvyddLy9KbD2cvJM24xB9IzAVzZki3T5MpHuel05bj4= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 29 Oct 2025 15:15:14 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 2981954368563909056 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 v8 07/10] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Wed, 29 Oct 2025 15:14:32 +0800 Message-Id: <20251029071435.88-8-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251029071435.88-1-kernel@airkyi.com> References: <20251029071435.88-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:airkyi.com:qybglogicsvrsz:qybglogicsvrsz4a-0 X-QQ-XMAILINFO: NnBlO8MsmACrRff/5IWYDaL08j8BdvDsD8GUTjmSJNz82004yPmrNhUj 9muvxY2750j1jDPyIFh2G0v+ixWm3vON2+3hofwfMCdPcVuZZlk+jPIL2VI2rMbPScZwGW4 z28E4qt4pzo4cBkSl7fUes53mll7mhyPIkg2MmGXINpfmEw8Y24D70IsDgIzWBETizloA0L pDSJA0BaEJE/zYeD4kTqaJY0Y3qzXOV8YIZp228a9a0g+5+5r5kCwdZ2IihKs58X+oFskvy EmFVlsPdN6KPWgwM0lG9N5lOdiP+sHngu1QmrRy8yEyfH6u/O5tAIOUxNDAEzrTxWInU2EI ituO4EnLbXSP1p1cbQ8IZ1tUSiHgJMfEN6kDljSKS+EWYzKLKJo/5usOvD0XNUHgVkA1Z7C BTP0Xu7OjbU28p8TUKn1Sl5qzDmc5erUEjJ+aguGdrFdrdnPVwJcZ7RJLsqmjiPmptpcyK7 UAxnbGxFtpMdXrWqJpzh3l6AFVspqGdbweGy2mkNX5ZrAwNtsz1QFfqw/lcDOkIBMphFjTF rv2Y5oUpzK6R+9O8kJlGYox3lnSb/oVLQwsFSWv4s4vRUcOOpnCjxCGkCkK/4O/AZdtQRUN 0Wj3iAGsp5UgL+TYUO04eQ8aVJuVIYqd9+GO62GYElYEb7wR65gqEaXv589ydIh0E5CLFim FhAlZyA0gGInN+4bfgAtKAK8UC8NiGqEo9yoittUwTnegz+eTa63Sz8KU3CpYyCxs4/dSA4 AoEKkpsGBsbuYHqTsI192ZDHJIjWXlZp/o0KX1DMcdCTiufQdVym4GnwolIAg2HBZaEwWCx rVV99I5mxiPrrc9BZwqPNZ2vXsKXxzYJdBOLgUqeENbNAExuaRkB8Q3cFTG94DFXwb7Wxiy pLb2t3jD6PfzR2cAkbsyL+Xh1QOBJN+hbLFPpnAfNxVa66T+VXW62Odh6FFqHzovg+fLyOG y9520tCvH0a0x/On+UM4pqBYYJ8qJPqbUHkhpNc9zpNV/TTlug8ScvPAlvoc08MW9k/3KtJ TGPrGFpDY1fbibQdPvG/IlLrDq1kmYmSs6RZrhuw== X-QQ-XMRINFO: OWPUhxQsoeAVDbp3OJHYyFg= X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: devicetree@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 --- (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