From patchwork Thu Jan 5 13:24:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pin-yen Lin X-Patchwork-Id: 639337 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 445C2C54E76 for ; Thu, 5 Jan 2023 13:25:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231444AbjAENZ0 (ORCPT ); Thu, 5 Jan 2023 08:25:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234018AbjAENZP (ORCPT ); Thu, 5 Jan 2023 08:25:15 -0500 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C48C5392F0 for ; Thu, 5 Jan 2023 05:25:14 -0800 (PST) Received: by mail-pj1-x102b.google.com with SMTP id q64so1390944pjq.4 for ; Thu, 05 Jan 2023 05:25:14 -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=cbxRbyImpevpLcgNpmQRY5xjXofgzVP7nhTUY2hiItA=; b=aff45gLxfSUOPSf+P16Wfqefq4B3AAiek2pWrvQRllMjMCQXDmLrCJ016EujGWaX3q EdlF/dam+lvnc2QOWICQbuXZrYWTm5byyAE0km3RStxK4OycVexOKmH7kuQXq9xCD7ZL 73HASPzrpoidvfOf6UuW6Dexj/RgPR2Glgkm4= 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=cbxRbyImpevpLcgNpmQRY5xjXofgzVP7nhTUY2hiItA=; b=G+IonJz3gOWYT8tgUW0wEHputgF4pl6upZ8yC7+w85UVSvFYDlOGegiyB0BtNr5MCk EVlxZidwgMArOKADm3bZAuMKxC7gew1e3ghxHzUAEPDxWayyap5ixivCODHoVVChWvM9 NXxS4ZEJFedNGIjFJoPPxrJ55CQxn/78LOS+iMDIn0ERmBkvDjzAdOqH9baxc/trH/hl k7IGc8cxCJhDce8nZ/y88AyO4d0MLvAT5xcZNDhsmEdRp8VKjgK+p36o7mQ5qbFHLms/ 5KO+KlNYmPILStdyJioMLU/fGkIgZ9u8+LG2CvJBv6V4t/ys31AocgeXaFvQgTkMwIt8 LWQQ== X-Gm-Message-State: AFqh2krNH5PBoEaTwTYmXeH2HSQ1BLnV2UDtHMpjPcsBNg3BKnlSd43w 5RKMBUbv8ERg0GkJ9qT9/LJgzf5pAJtQq6iS X-Google-Smtp-Source: AMrXdXtNIhm1zRqPAeWmXv09/1S9tpXOtiiTUYV1OphcKK5xQL/pBpTem6Md/SpDKiVfYtS+hZxHTQ== X-Received: by 2002:a17:90a:f2d4:b0:21a:b64:3488 with SMTP id gt20-20020a17090af2d400b0021a0b643488mr54462147pjb.44.1672925114268; Thu, 05 Jan 2023 05:25:14 -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.35.2023.01.05.05.25.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Jan 2023 05:25:13 -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_F_=2E_R_=2E_A_=2E_Prado?= , 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 1/9] device property: Add remote endpoint to devcon matcher Date: Thu, 5 Jan 2023 21:24:49 +0800 Message-Id: <20230105132457.4125372-2-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 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Prashant Malani When searching the device graph for device matches, check the remote-endpoint itself for a match. Some drivers register devices for individual endpoints. This allows the matcher code to evaluate those for a match too, instead of only looking at the remote parent devices. This is required when a device supports two mode switches in its endpoints, so we can't simply register the mode switch with the parent node. Signed-off-by: Prashant Malani Signed-off-by: Pin-yen Lin --- (no changes since v6) Changes in v6: - New in v6 drivers/base/property.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index 2a5a37fcd998..48877af4e444 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1223,6 +1223,21 @@ static unsigned int fwnode_graph_devcon_matches(struct fwnode_handle *fwnode, break; } + /* + * Some drivers may register devices for endpoints. Check + * the remote-endpoints for matches in addition to the remote + * port parent. + */ + node = fwnode_graph_get_remote_endpoint(ep); + if (fwnode_device_is_available(node)) { + ret = match(node, con_id, data); + if (ret) { + if (matches) + matches[count] = ret; + count++; + } + } + node = fwnode_graph_get_remote_port_parent(ep); if (!fwnode_device_is_available(node)) { fwnode_handle_put(node);