From patchwork Mon Nov 30 13:31:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Scally X-Patchwork-Id: 335176 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFC4FC83020 for ; Mon, 30 Nov 2020 13:32:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A62F20855 for ; Mon, 30 Nov 2020 13:32:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JVUuwkGJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726832AbgK3Ncj (ORCPT ); Mon, 30 Nov 2020 08:32:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726688AbgK3Nch (ORCPT ); Mon, 30 Nov 2020 08:32:37 -0500 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2452C0613D3; Mon, 30 Nov 2020 05:31:56 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id r3so16245414wrt.2; Mon, 30 Nov 2020 05:31:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pBmA2HioX2UOik7KR00ouIZb6c9//C/JEc7oIKLhFcY=; b=JVUuwkGJ4NaNb4HLNMLQMgIDISYvV/gUvh2+I8ROZLZfa2ArJ02t4klczA1AVqGmKA 8BhgJocg2bdn/9CLqAn59pwI/chqAFBGJitzVjZuNhPJokxYZvuiSwGIvR1kGAEPufBB 9h6zoAoKp0eoCsNVxTcNHvpcHUL1l4uT26DAtqXXhKdb3YhxrsJsn9nMR44YSaGuGqey gHJ/5b4FDD0yej47dY1G6SnhFpjVsCh4GkYVE16P9aI/K+sJ5wacNAoDQ2SnVzADnfSo QHY8qBwE9OdR/xrPm6iYuwsjLoNx2YrFmN/la1JTAMUNhTbAE+Qvr13cCPgSktyLSJ5C zZRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pBmA2HioX2UOik7KR00ouIZb6c9//C/JEc7oIKLhFcY=; b=UdF883nmhtYuFVlF4Fcei2VMg36joPnDTyJjXFpMlsDP0OLXygeFWqGGUHeSg7az1v Sz4wc57iGS1z2xhuftBKujQHtRH3gbpbAyuqetsY7TPYlmLDbSEpZfghD0BHIgaUQeCG csMrnp4o7V8Dx42GY99TRg9NDkWGZDede4zwybAQBBWk3747RPd6/OtAbJft0vupzQDK M07o+9UhqHoeHMOLcpcEhFEGwdalNxG+q+tvcAnctIgWgLb1t4Hga/X5b3czcoCKjYj8 XgXXEwkc+EzNBylL/kLFXu5CRFTKvQ5O7xsZ6RNwcPVPZFMXNbaGx2eNtjRA5YxxUCDk BIiQ== X-Gm-Message-State: AOAM5305HypKY2gFPuu2M+xF82HKllm8bPdjYB+52qEkP62gr1V8o0xm LZ6ymfcrfaRNGgzQawKEGWNBVn1zQDdYNQoW X-Google-Smtp-Source: ABdhPJwJReLGmQDmMBx5sI3o4Ddyr/ckN/oTbfZCoRx7mDtrmB/TSoplbGx15zWUvGD03E8J9yGkhA== X-Received: by 2002:adf:916e:: with SMTP id j101mr29144408wrj.55.1606743115428; Mon, 30 Nov 2020 05:31:55 -0800 (PST) Received: from valhalla.home ([2.31.224.80]) by smtp.gmail.com with ESMTPSA id g192sm7452333wme.48.2020.11.30.05.31.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Nov 2020 05:31:54 -0800 (PST) From: Daniel Scally To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, linux-media@vger.kernel.org, devel@acpica.org Cc: rjw@rjwysocki.net, lenb@kernel.org, gregkh@linuxfoundation.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, linus.walleij@linaro.org, bgolaszewski@baylibre.com, wsa@kernel.org, yong.zhi@intel.com, sakari.ailus@linux.intel.com, bingbu.cao@intel.com, tian.shu.qiu@intel.com, mchehab@kernel.org, robert.moore@intel.com, erik.kaneda@intel.com, pmladek@suse.com, rostedt@goodmis.org, sergey.senozhatsky@gmail.com, linux@rasmusvillemoes.dk, kieran.bingham+renesas@ideasonboard.com, jacopo+renesas@jmondi.org, laurent.pinchart+renesas@ideasonboard.com, jorhand@linux.microsoft.com, kitakar@gmail.com, heikki.krogerus@linux.intel.com Subject: [PATCH 02/18] property: Add support for calling fwnode_graph_get_endpoint_by_id() for fwnode->secondary Date: Mon, 30 Nov 2020 13:31:13 +0000 Message-Id: <20201130133129.1024662-3-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201130133129.1024662-1-djrscally@gmail.com> References: <20201130133129.1024662-1-djrscally@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org This function is used to find fwnode endpoints against a device. In some instances those endpoints are software nodes which are children of fwnode->secondary. Add support to fwnode_graph_get_endpoint_by_id() to find those endpoints by recursively calling itself passing the ptr to fwnode->secondary in the event no endpoint is found for the primary. Signed-off-by: Daniel Scally --- Changes since RFC v3: Patch introduced. In discussion in the last submission I noted that the CIO2 device doesn't have an ACPI fwnode - that turns out to be true for _some_ devices but not others, so we need this function to check the secondary too. drivers/base/property.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index a5ca2306796f..4ece6b086e36 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1162,6 +1162,10 @@ fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode, best_ep_id = fwnode_ep.id; } + if (!best_ep && fwnode && !IS_ERR_OR_NULL(fwnode->secondary)) + return fwnode_graph_get_endpoint_by_id(fwnode->secondary, port, + endpoint, flags); + return best_ep; } EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_by_id);