From patchwork Tue Aug 1 14:50:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 796284 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="nqDzrT7v"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xMK5H2SQ3z9s81 for ; Wed, 2 Aug 2017 00:51:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751166AbdHAOuq (ORCPT ); Tue, 1 Aug 2017 10:50:46 -0400 Received: from mail-wr0-f177.google.com ([209.85.128.177]:35834 "EHLO mail-wr0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751960AbdHAOun (ORCPT ); Tue, 1 Aug 2017 10:50:43 -0400 Received: by mail-wr0-f177.google.com with SMTP id k71so7883161wrc.2 for ; Tue, 01 Aug 2017 07:50:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Se7UtszfKhmHKgEFfWMEfWjutqgGrSxV8qr0Mh8rg2s=; b=nqDzrT7vp/E4H1szCoxveznUERK25AKp7G1BKbB8AFF9oVSpyOzTn5k5csMkbN/I+y ku2u+wu15Nmt28XGyOWHCpftpvUafohrA+46e1O4nHTE0CCHBcbgVkxPrbF4GHvD/HAA S0WQxo3f63ox6eO9CZ85fQHfY7pxxkFKhWlm3ToHQphHnpiaHtDUTCsE5e1kEySIHFga xyzxm9Uk7KdXmr22ACBmu7UHenXKTg7i6hmO9sVepQ5NkvjuXqRUwZ+wmOCVrTYPuhPy kZjpp4pdKIkTOpH3J0ILNXxQuVRM4fTrayr5fusDaPwevdYMdQxHJ6N6B4WrTPNCjcsG AhPA== 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; bh=Se7UtszfKhmHKgEFfWMEfWjutqgGrSxV8qr0Mh8rg2s=; b=OjP9Z14MFB3RAoY+QPCy52P6lCfjinLQltYQHbTMu2xXQqUxURZfFNCpW/EWWtuEH8 wy4VAgEpLVI04g5f66uBZRMI6f2OvBsS3uLMqj4UCCpFQZVSxNEA72FOeyj3rWYcI421 QN1/DPoPcsAMa2aPFRM8mZWaTmGOLPQBk8I5cvef3ihUsN9muSFP/hVczPt3/ZcFMNEX hv2mutH4C/iggbjb+zuJrL5Mx4qZBdobWsW2rpaaoR0QdAnStIHZZaGpulfJgVlTkobY +BVC7ux6mX9Xo79jetTQouBLP8X2j5LEJt4DFqQX9eLvGHSaa2ofGe++fA8WX6uze3sK UtTw== X-Gm-Message-State: AIVw111AOjFI/IS22Z19whd4axRoDi0Urf8nw2Yif2mTkdK6egEZ1n7X 5HUaOkKkbrYHl5/QNT4EMA== X-Received: by 10.223.146.35 with SMTP id 32mr14750890wrj.76.1501599042514; Tue, 01 Aug 2017 07:50:42 -0700 (PDT) Received: from localhost.localdomain ([90.63.244.31]) by smtp.gmail.com with ESMTPSA id p140sm1618416wmb.28.2017.08.01.07.50.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 01 Aug 2017 07:50:41 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Thomas Gleixner , Marc Zyngier , Jonathan Corbet , Bamvor Jian Zhang , Jonathan Cameron , Lars-Peter Clausen Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-doc@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v2 2/3] irq/irq_sim: add a devres variant of irq_sim_init() Date: Tue, 1 Aug 2017 16:50:27 +0200 Message-Id: <20170801145028.7558-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.13.2 In-Reply-To: <20170801145028.7558-1-brgl@bgdev.pl> References: <20170801145028.7558-1-brgl@bgdev.pl> Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add a resource managed version of irq_sim_init(). This can be conveniently used in device drivers. Signed-off-by: Bartosz Golaszewski Acked-by: Jonathan Cameron --- Documentation/driver-model/devres.txt | 1 + include/linux/irq_sim.h | 4 ++++ kernel/irq_sim.c | 43 +++++++++++++++++++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt index 30e04f7a690d..69f08c0f23a8 100644 --- a/Documentation/driver-model/devres.txt +++ b/Documentation/driver-model/devres.txt @@ -312,6 +312,7 @@ IRQ devm_irq_alloc_descs_from() devm_irq_alloc_generic_chip() devm_irq_setup_generic_chip() + devm_irq_sim_init() LED devm_led_classdev_register() diff --git a/include/linux/irq_sim.h b/include/linux/irq_sim.h index 0c1abf0e3244..94c4bfc9b7a9 100644 --- a/include/linux/irq_sim.h +++ b/include/linux/irq_sim.h @@ -9,6 +9,7 @@ #define _LINUX_IRQ_SIM_H #include +#include struct irq_sim_work_ctx { struct irq_work work; @@ -30,6 +31,9 @@ struct irq_sim { int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs); void irq_sim_fini(struct irq_sim *sim); +int devm_irq_sim_init(struct device *dev, + struct irq_sim *sim, unsigned int num_irqs); + void irq_sim_fire(struct irq_sim *sim, unsigned int offset); int irq_sim_irqnum(struct irq_sim *sim, unsigned int offset); diff --git a/kernel/irq_sim.c b/kernel/irq_sim.c index 4387e2bee97c..92686c0c7790 100644 --- a/kernel/irq_sim.c +++ b/kernel/irq_sim.c @@ -90,6 +90,49 @@ void irq_sim_fini(struct irq_sim *sim) } EXPORT_SYMBOL_GPL(irq_sim_fini); +struct irq_sim_devres { + struct irq_sim *sim; +}; + +static void devm_irq_sim_release(struct device *dev, void *res) +{ + struct irq_sim_devres *this = res; + + irq_sim_fini(this->sim); +} + +/** + * irq_sim_init - Initialize the interrupt simulator for a managed device. + * + * @dev: Device to initialize the simulator object for. + * @sim: The interrupt simulator object to initialize. + * @num_irqs: Number of interrupts to allocate + * + * Returns 0 on success and a negative error number on failure. + */ +int devm_irq_sim_init(struct device *dev, + struct irq_sim *sim, unsigned int num_irqs) +{ + struct irq_sim_devres *dr; + int rv; + + dr = devres_alloc(devm_irq_sim_release, sizeof(*dr), GFP_KERNEL); + if (!dr) + return -ENOMEM; + + rv = irq_sim_init(sim, num_irqs); + if (rv) { + devres_free(dr); + return rv; + } + + dr->sim = sim; + devres_add(dev, dr); + + return 0; +} +EXPORT_SYMBOL_GPL(devm_irq_sim_init); + /** * irq_sim_fire - Enqueue an interrupt. *