From patchwork Wed Sep 29 16:38:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 12526347 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2245C433F5 for ; Wed, 29 Sep 2021 16:39:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AA6F961503 for ; Wed, 29 Sep 2021 16:39:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345985AbhI2Qki (ORCPT ); Wed, 29 Sep 2021 12:40:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:40560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344376AbhI2Qkg (ORCPT ); Wed, 29 Sep 2021 12:40:36 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ABE3B60F6E; Wed, 29 Sep 2021 16:38:55 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mVcbe-00DmcL-2i; Wed, 29 Sep 2021 17:38:54 +0100 From: Marc Zyngier To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Cc: Bjorn Helgaas , Rob Herring , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Alyssa Rosenzweig , Stan Skowronek , Mark Kettenis , Sven Peter , Hector Martin , Robin Murphy , Joey Gouly , Joerg Roedel , kernel-team@android.com Subject: [PATCH v5 01/14] irqdomain: Make of_phandle_args_to_fwspec generally available Date: Wed, 29 Sep 2021 17:38:34 +0100 Message-Id: <20210929163847.2807812-2-maz@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210929163847.2807812-1-maz@kernel.org> References: <20210929163847.2807812-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, bhelgaas@google.com, robh+dt@kernel.org, lorenzo.pieralisi@arm.com, kw@linux.com, alyssa@rosenzweig.io, stan@corellium.com, kettenis@openbsd.org, sven@svenpeter.dev, marcan@marcan.st, Robin.Murphy@arm.com, joey.gouly@arm.com, joro@8bytes.org, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org of_phandle_args_to_fwspec() can be generally useful to code extracting a DT of_phandle and using an irq_fwspec to use the hierarchical irqdomain API. Make it visible the the rest of the kernel, including modules. Tested-by: Alyssa Rosenzweig Signed-off-by: Marc Zyngier --- include/linux/irqdomain.h | 4 ++++ kernel/irq/irqdomain.c | 6 +++--- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 9ee238ad29ce..553da4899f55 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -64,6 +64,10 @@ struct irq_fwspec { u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS]; }; +/* Conversion function from of_phandle_args fields to fwspec */ +void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, + unsigned int count, struct irq_fwspec *fwspec); + /* * Should several domains have the same device node, but serve * different purposes (for example one domain is for PCI/MSI, and the diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 4d8fc65cf38f..e14adda218b7 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -744,9 +744,8 @@ static int irq_domain_translate(struct irq_domain *d, return 0; } -static void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, - unsigned int count, - struct irq_fwspec *fwspec) +void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, + unsigned int count, struct irq_fwspec *fwspec) { int i; @@ -756,6 +755,7 @@ static void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, for (i = 0; i < count; i++) fwspec->param[i] = args[i]; } +EXPORT_SYMBOL_GPL(of_phandle_args_to_fwspec); unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec) {