From nobody Sun Apr 5 18:36:58 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 A0F6CC54EBD for ; Thu, 12 Jan 2023 04:23:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239509AbjALEXI (ORCPT ); Wed, 11 Jan 2023 23:23:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236805AbjALEWB (ORCPT ); Wed, 11 Jan 2023 23:22:01 -0500 Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCE7ABE00 for ; Wed, 11 Jan 2023 20:21:47 -0800 (PST) Received: by mail-pg1-x52f.google.com with SMTP id s67so11970412pgs.3 for ; Wed, 11 Jan 2023 20:21:47 -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=X4fsKZ8vfmDfUc1Nfjl36ivIzejXzy6Kt8K+gcJWI24=; b=mkPluvk59KIiAcPlMDzERaNoAA9HeVVqvopt0+jh3JVWYVk5ewNwNrAH9p0jo5Iwws 2CQ86HkEsKNCSwoYJKBDsEcZe8eQR/vO6t/ZPbARJBLEagCttO1T7hJDbm9X73MbQz2h pC/tdKthbblySuECemzkzZQ0F+XgWqAGd7pkE= 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=X4fsKZ8vfmDfUc1Nfjl36ivIzejXzy6Kt8K+gcJWI24=; b=FLNWr/6kJgPR8ohVSzNYnkcFvs8wQudRgD9v1oXcHcynHy9pKZGG1BNiOecTvM8gL5 wTxsePkv1tTDKJxg9re8gIcPbHMDQOdTuVFet9K1jN/nXL0YNsjrLcCycDBRFRMMMS1k gUvVEVUYwrNt+0yT318EblXK20a0EQqFPxEaZhReGl1HhQHkh5rG9XGRALjOTNCVF/qI vrpavaC9xb2fqI9QCXx17lE2cQ7N1G9q92h1uLEGATWnywJQk7uPpijLoCL+85v3Jjee iLv3wqwNccBfSCdnLrB7RI0ooald05dIy/IJGjtbaptmCRrC1ARBLjkCkN1w0y9VOVTu BXmA== X-Gm-Message-State: AFqh2krXLLddO1shSaB2RgYCXxArrFz9bJN8EynyLiwoJ/Yh0XHzmWzk 10QWrqT2Nu8cnEey3YAG4eh7FQ== X-Google-Smtp-Source: AMrXdXsaiGwsMJ8RFHGEHuDbChLN9aOocfYMm/szoOGxe37pNLiAJo1fc3aVRfyGVkuuPJbgMkCkNw== X-Received: by 2002:a62:4dc7:0:b0:586:210b:2b67 with SMTP id a190-20020a624dc7000000b00586210b2b67mr17041922pfb.6.1673497307326; Wed, 11 Jan 2023 20:21:47 -0800 (PST) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:594f:5484:7591:d074]) by smtp.gmail.com with ESMTPSA id s8-20020aa78bc8000000b00582579cb0e0sm5519478pfd.129.2023.01.11.20.21.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Jan 2023 20:21:47 -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: Stephen Boyd , Pin-yen Lin , =?UTF-8?q?N=C3=ADcolas=20F=20=2E=20R=20=2E=20A=20=2E=20Prado?= , Marek Vasut , AngeloGioacchino Del Regno , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, Javier Martinez Canillas , Lyude Paul , chrome-platform@lists.linux.dev, Xin Ji , Thomas Zimmermann , linux-kernel@vger.kernel.org, Allen Chen , linux-acpi@vger.kernel.org, Hsin-Yi Wang , Chen-Yu Tsai , =?UTF-8?q?Jos=C3=A9=20Exp=C3=B3sito?= , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Subject: [PATCH v10 5/9] drm/bridge: anx7625: Check for Type-C during panel registration Date: Thu, 12 Jan 2023 12:21:00 +0800 Message-Id: <20230112042104.4107253-6-treapking@chromium.org> X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog In-Reply-To: <20230112042104.4107253-1-treapking@chromium.org> References: <20230112042104.4107253-1-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 Reviewed-by: Chen-Yu Tsai Tested-by: Chen-Yu Tsai --- Changes in v10: - Collected Reviewed-by and Tested-by tags 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