From nobody Fri Apr 10 08:07:31 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91D7FC63709 for ; Thu, 5 Jan 2023 13:26:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234029AbjAEN0U (ORCPT ); Thu, 5 Jan 2023 08:26:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44824 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233760AbjAENZk (ORCPT ); Thu, 5 Jan 2023 08:25:40 -0500 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13294392CD for ; Thu, 5 Jan 2023 05:25:39 -0800 (PST) Received: by mail-pj1-x102c.google.com with SMTP id v13-20020a17090a6b0d00b00219c3be9830so2001363pjj.4 for ; Thu, 05 Jan 2023 05:25:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=C65HbTqm4aoCrwDl2BLz1roa80SXzNKa5x0ufot4CrI=; b=EcSiBdYwt+3fFTqI3pD+Z1cWbfdlPdT1QRYJXeDcGanBNH+YzpSIj4FWtukHqzOYqu 2ozT6CU7PjO0z3oXwZ1RGBrtkJrX1qxyw3nEO/Gdr0dlaN/snPPv0OW2d8tedJ0FpcAw kxMlloNT946vDD52UbOffRvbe6M3ZkG/q5cIU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=C65HbTqm4aoCrwDl2BLz1roa80SXzNKa5x0ufot4CrI=; b=gk03gq9OwoquPbNg0KtBwA3iphVRxM/DGogL348jg3nRvHU6YfMzdsdH2MZ/pxFrZj Vug2tWjwRObJReKriy3Dbs9j1Ns8RJ7astznWSVFI4DfX0kTe3Mf+Q2xnM8Yv9ZrG1Z1 TuMSpeeBEgaSz7xWQffSM8f9ZUFqhW6W3ACpb7aEicEY0wXcQTFvsrhUtfw6GWCAMtpQ X1p4DaaPUGWATBwLcf6RWWLP0NXd2veHtZcZqtNldYP9bjZrTkzQ4NZ4E3ixDVaO0fC9 A/calP5lacUUWyfd36umHZAjbEXlEhhxdeFF7JGL1wu7/NHB+1eO4sRdniDvctsHp4Og Gaag== X-Gm-Message-State: AFqh2kphpL5T+M3strzirlBGRv1DjnHSTq1pvWnB7LIj4dl9Ip20mVqK dpCegFtF4IyQEPGUL2w+NI/KIA== X-Google-Smtp-Source: AMrXdXuwu1cZsCmcp/+3j0ERmkFrfCApL1/twQ/14n+uQtu92DgDzeoXL5AjjzzzYyfKtWC3hp69rQ== X-Received: by 2002:a17:90b:d98:b0:221:4cd7:3401 with SMTP id bg24-20020a17090b0d9800b002214cd73401mr54129230pjb.10.1672925138498; Thu, 05 Jan 2023 05:25:38 -0800 (PST) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:7a61:eb85:2e3:2bd0]) by smtp.gmail.com with ESMTPSA id gk22-20020a17090b119600b00225e670e4c7sm1372682pjb.35.2023.01.05.05.25.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Jan 2023 05:25:38 -0800 (PST) From: Pin-yen Lin To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Greg Kroah-Hartman , "Rafael J . Wysocki" , Prashant Malani , Benson Leung , Guenter Roeck Cc: =?UTF-8?q?N=C3=ADcolas=20F=20=2E=20R=20=2E=20A=20=2E=20Prado?= , Xin Ji , AngeloGioacchino Del Regno , Thomas Zimmermann , Hsin-Yi Wang , linux-kernel@vger.kernel.org, Allen Chen , linux-acpi@vger.kernel.org, Lyude Paul , dri-devel@lists.freedesktop.org, chrome-platform@lists.linux.dev, Pin-yen Lin , Javier Martinez Canillas , Marek Vasut , devicetree@vger.kernel.org, Stephen Boyd Subject: [PATCH v7 5/9] drm/bridge: anx7625: Check for Type-C during panel registration Date: Thu, 5 Jan 2023 21:24:53 +0800 Message-Id: <20230105132457.4125372-6-treapking@chromium.org> X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog In-Reply-To: <20230105132457.4125372-1-treapking@chromium.org> References: <20230105132457.4125372-1-treapking@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The output port endpoints can be connected to USB-C connectors. Running drm_of_find_panel_or_bridge() with such endpoints leads to a continuous return value of -EPROBE_DEFER, even though there is no panel present. To avoid this, check for the existence of a "mode-switch" property in the port endpoint, and skip panel registration completely if so. Signed-off-by: Pin-yen Lin --- (no changes since v6) Changes in v6: - New in v6 drivers/gpu/drm/bridge/analogix/anx7625.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/br= idge/analogix/anx7625.c index b375887e655d..1cf242130b91 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -1649,7 +1649,7 @@ static int anx7625_get_swing_setting(struct device *d= ev, static int anx7625_parse_dt(struct device *dev, struct anx7625_platform_data *pdata) { - struct device_node *np =3D dev->of_node, *ep0; + struct device_node *np =3D dev->of_node, *ep0, *sw; int bus_type, mipi_lanes; =20 anx7625_get_swing_setting(dev, pdata); @@ -1688,6 +1688,17 @@ static int anx7625_parse_dt(struct device *dev, if (of_property_read_bool(np, "analogix,audio-enable")) pdata->audio_en =3D 1; =20 + /* + * Don't bother finding a panel if a Type-C `mode-switch` property is + * present in one of the endpoints. + */ + for_each_endpoint_of_node(np, sw) { + if (of_property_read_bool(sw, "mode-switch")) { + of_node_put(sw); + return 0; + } + } + pdata->panel_bridge =3D devm_drm_of_get_bridge(dev, np, 1, 0); if (IS_ERR(pdata->panel_bridge)) { if (PTR_ERR(pdata->panel_bridge) =3D=3D -ENODEV) { --=20 2.39.0.314.g84b9a713c41-goog