From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8A561CAC587 for ; Mon, 8 Sep 2025 23:52:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=egTdirx3rv9FHXO6edFjSkV+ydP6PXTxLWabE/tqGos=; b=Sf2jK+9K+8gdMsfLpmZw+nNQHJ 0GY8t0amITythnXw5RXSiRtSDgifd6zWTUIART2Xs+8MxkFRWH/B3ALqv0r0zE6FzgeqegOjhzgV4 TC1z5Ld1tzvfC8pYOg4ZGEN2HVHelSAd2bq3F3NiLpfsU+OPgqbFQK2fXkmwgqjkT8iCn5e7Fe1ur mD2CdDhiZaf5+2Z8F5qOh/XfAtlwRrgWwZdqnbpS66E/So2qC3rCOGfr1iTog3x7Jxi3iTgSHIchx 2jhTlKKo/Wh8VPZwLpGBeLANQbXHFUAiYrYb5eTvCrxhrf0+EjnKsLhZ0aVV1aYR+OHqvb7s8KRx3 BTjGBP8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uvlei-000000033DC-2E46; Mon, 08 Sep 2025 23:52:16 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uvemS-00000000lN7-49AK for linux-arm-kernel@lists.infradead.org; Mon, 08 Sep 2025 16:31:51 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 96B6543A76; Mon, 8 Sep 2025 16:31:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 737FFC4CEF9; Mon, 8 Sep 2025 16:31:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757349108; bh=sGD9P1+N4V37A0aIJ2eK7vIsS8B9pkkhrv0UN3imJB0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fXVqCQ1Jd/RLa8F2YRUK+xt2yn1De/nXFfvsfopMCm81ElEXjPFMo6Sm3fwz1DaAu MaL22A9DwFOYImVF5+aveYxYx7SAgGm9CfgPxo2K/QHWJIqb5mYLaIFUsMREcuUSJX ai5YhvLzY+xklsspr4o/Gr/Ct+L/3WUb/5ku6DgGJ/9NAtdmqBBivYa94I/q6EBp6N uhhACdHoPgZBaOpRNJ7TjyY+BL6NMt5mhL4k5w4qWXWvTtmjDYd7Hh9fMiMIfwipBd xXHrpzA4I1V0TvRX9sucdd3MsogG6DRKjCeZ9bAVSuQmzYX3NbzG5d02VOo6/Mt5D+ U93Tcv2DHuOUA== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1uvemQ-00000004NTm-1IZA; Mon, 08 Sep 2025 16:31:46 +0000 From: Marc Zyngier To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org Cc: Thomas Gleixner , Mark Rutland , Will Deacon , "Rafael J. Wysocki" , Rob Herring , Saravana Kannan , Greg Kroah-Hartman , Sven Peter , Janne Grunau , Suzuki K Poulose , James Clark Subject: [PATCH 03/25] of/irq: Add IRQ affinity reporting interface Date: Mon, 8 Sep 2025 17:31:05 +0100 Message-Id: <20250908163127.2462948-4-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250908163127.2462948-1-maz@kernel.org> References: <20250908163127.2462948-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, tglx@linutronix.de, mark.rutland@arm.com, will@kernel.org, rafael@kernel.org, robh@kernel.org, saravanak@google.com, gregkh@linuxfoundation.org, sven@kernel.org, j@jannau.net, suzuki.poulose@arm.com, james.clark@linaro.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250908_093149_072570_F689F5AC X-CRM114-Status: GOOD ( 13.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Plug the irq_populate_fwspec_info() helper into the OF layer to offer an IRQ affinity reporting function. Signed-off-by: Marc Zyngier --- drivers/of/irq.c | 20 ++++++++++++++++++++ include/linux/of_irq.h | 7 +++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 74aaea61de13c..cb264f44bd6d8 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -479,6 +479,26 @@ int of_irq_get(struct device_node *dev, int index) } EXPORT_SYMBOL_GPL(of_irq_get); +const struct cpumask *of_irq_get_affinity(struct device_node *dev, int index) +{ + int rc; + struct of_phandle_args oirq; + struct irq_fwspec_info info; + + rc = of_irq_parse_one(dev, index, &oirq); + if (rc) + return NULL; + + of_phandle_args_to_fwspec(oirq.np, oirq.args, oirq.args_count, + &info.fwspec); + + if (!irq_populate_fwspec_info(&info) && + info.flags & IRQ_FWSPEC_INFO_AFFINITY_VALID) + return info.affinity; + + return NULL; +} + /** * of_irq_get_byname - Decode a node's IRQ and return it as a Linux IRQ number * @dev: pointer to device tree node diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index a480063c9cb19..721cbdbc292df 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -43,6 +43,8 @@ extern int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq); extern int of_irq_count(struct device_node *dev); extern int of_irq_get(struct device_node *dev, int index); +extern const struct cpumask *of_irq_get_affinity(struct device_node *dev, + int index); extern int of_irq_get_byname(struct device_node *dev, const char *name); extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); @@ -77,6 +79,11 @@ static inline int of_irq_get_byname(struct device_node *dev, const char *name) { return 0; } +static inline const struct cpumask *of_irq_get_affinity(struct device_node *dev, + int index) +{ + return NULL; +} static inline int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs) { -- 2.39.2