From patchwork Tue Oct 13 11:51:31 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 7384171 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 63925BEEA4 for ; Tue, 13 Oct 2015 11:57:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 72732207EA for ; Tue, 13 Oct 2015 11:57:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA37520748 for ; Tue, 13 Oct 2015 11:57:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932150AbbJML5n (ORCPT ); Tue, 13 Oct 2015 07:57:43 -0400 Received: from foss.arm.com ([217.140.101.70]:52202 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753094AbbJMLwS (ORCPT ); Tue, 13 Oct 2015 07:52:18 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4819B46B; Tue, 13 Oct 2015 04:52:16 -0700 (PDT) Received: from approximate.cambridge.arm.com (approximate.cambridge.arm.com [10.1.209.125]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4EC383F21A; Tue, 13 Oct 2015 04:52:16 -0700 (PDT) From: Marc Zyngier To: Thomas Gleixner , Jiang Liu , Jason Cooper , "Rafael J. Wysocki" Cc: , , , Lorenzo Pieralisi , Tomasz Nowicki , Hanjun Guo , Suravee Suthikulpanit , Graeme Gregory , Jake Oshins Subject: [PATCH v2 03/17] irqdomain: Allow irq domain lookup by fwnode Date: Tue, 13 Oct 2015 12:51:31 +0100 Message-Id: <1444737105-31573-4-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1444737105-31573-1-git-send-email-marc.zyngier@arm.com> References: <1444737105-31573-1-git-send-email-marc.zyngier@arm.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP So far, our irq domains are still looked up by device node. Let's change this and allow a domain to be looked up using a fwnode_handle pointer. The existing interfaces are preserved with a couple of helpers. Signed-off-by: Marc Zyngier --- include/linux/irqdomain.h | 11 +++++++++-- kernel/irq/irqdomain.c | 16 +++++++--------- 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 2f508f4..607c185 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -183,10 +183,17 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, irq_hw_number_t first_hwirq, const struct irq_domain_ops *ops, void *host_data); -extern struct irq_domain *irq_find_matching_host(struct device_node *node, - enum irq_domain_bus_token bus_token); +extern struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, + enum irq_domain_bus_token bus_token); extern void irq_set_default_host(struct irq_domain *host); +static inline struct irq_domain *irq_find_matching_host(struct device_node *node, + enum irq_domain_bus_token bus_token) +{ + return irq_find_matching_fwnode(node ? &node->fwnode : NULL, + bus_token); +} + static inline struct irq_domain *irq_find_host(struct device_node *node) { return irq_find_matching_host(node, DOMAIN_BUS_ANY); diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 1aee5c1..023ab6d 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -191,12 +191,12 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, EXPORT_SYMBOL_GPL(irq_domain_add_legacy); /** - * irq_find_matching_host() - Locates a domain for a given device node - * @node: device-tree node of the interrupt controller + * irq_find_matching_fwnode() - Locates a domain for a given fwnode + * @fwnode: FW descriptor of the interrupt controller * @bus_token: domain-specific data */ -struct irq_domain *irq_find_matching_host(struct device_node *node, - enum irq_domain_bus_token bus_token) +struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, + enum irq_domain_bus_token bus_token) { struct irq_domain *h, *found = NULL; int rc; @@ -212,12 +212,10 @@ struct irq_domain *irq_find_matching_host(struct device_node *node, */ mutex_lock(&irq_domain_mutex); list_for_each_entry(h, &irq_domain_list, link) { - struct device_node *of_node; - of_node = irq_domain_get_of_node(h); if (h->ops->match) - rc = h->ops->match(h, node, bus_token); + rc = h->ops->match(h, to_of_node(fwnode), bus_token); else - rc = ((of_node != NULL) && (of_node == node) && + rc = ((fwnode != NULL) && (h->fwnode == fwnode) && ((bus_token == DOMAIN_BUS_ANY) || (h->bus_token == bus_token))); @@ -229,7 +227,7 @@ struct irq_domain *irq_find_matching_host(struct device_node *node, mutex_unlock(&irq_domain_mutex); return found; } -EXPORT_SYMBOL_GPL(irq_find_matching_host); +EXPORT_SYMBOL_GPL(irq_find_matching_fwnode); /** * irq_set_default_host() - Set a "default" irq domain