From patchwork Tue Oct 22 08:43:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1181155 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) 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; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="DZOLMbbW"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46y6VG0C6wz9sPv for ; Tue, 22 Oct 2019 19:43:34 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388522AbfJVInc (ORCPT ); Tue, 22 Oct 2019 04:43:32 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:55229 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388571AbfJVInc (ORCPT ); Tue, 22 Oct 2019 04:43:32 -0400 Received: by mail-wm1-f66.google.com with SMTP id p7so16197057wmp.4 for ; Tue, 22 Oct 2019 01:43:30 -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 :mime-version:content-transfer-encoding; bh=pZPH7ezKf53/QBMw5BxZ096M4gSklQo/Sa/IUAzrHtk=; b=DZOLMbbWoSzuUITLHQgA1LWlfomVlIuZYFkL4f0ogePF721BvXMWzLC2KLDfCOSMQX 07qFmvF+kn0YAlG6RYk54w1luE8PD5W0RYri3EiHp5bTYkyVhJ/Q7Jkj/wKdw4aThGAC cmQcYzemSHsXxF3hRvUxQfcK5wUKBhs9k6nH5HzR52D4XagKAErSiPqZ/kD/hYgmKuUJ /3RoAMML78OadDGsiF8BJ5Ffme8j8U6folglUeM8rYqVDSOhqgHh3giHvm1gkMHYuV1x XOGkVfQVH2+2wD0Lt9k5UwwIO3hbpBNUy2t5KD9eib2RwqmJHf7wY6dAaNT+29bbBe/2 wQ1Q== 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=pZPH7ezKf53/QBMw5BxZ096M4gSklQo/Sa/IUAzrHtk=; b=S2PNXdxnpIaLKECDGYRDdvSFn2QttC/VsD2/h8wkf4MKRl7GVnU5Yj1j1v3vpR6h5W IabdJN5pRkAbnFcC4xWVAeE9znKmYuEiITdKlq7zxN+xldDwuhkzjHOMcpBVHs/tlf8I vi1w5UlLXugSmY161RA4o3QAmtmRAE9IbRTqUqwODot/YQ26tPppXnetqTs7TgtGsvZ9 rX7Hoy4zFEJIo7tDF3t+YXYIGMXrllYKwsCWQ4ocJ5FT0wn6nMK+HF/+VmVfT+0xucw4 c9YqKLGcuhJChkhukkJRMyL85wWadOy3IDYCfZLcMkieMGhJZMydV5KkgR5w7Bh+ERXn UtPA== X-Gm-Message-State: APjAAAVgnzgO3FMEHFwODrUi5UnV1QA1fJA6CctLMw9mM3pdPXdl+3m4 w54HNymvKnpeq1cES2hFhamPPQ== X-Google-Smtp-Source: APXvYqypXQIXucGUA5pJLdWx/haak2b2SxfPC52Zaw+ESaa0qFsAO8OKx29Ka6dpUstCBehaWxg85w== X-Received: by 2002:a1c:4e:: with SMTP id 75mr1981857wma.104.1571733809364; Tue, 22 Oct 2019 01:43:29 -0700 (PDT) Received: from localhost.localdomain (amontpellier-652-1-281-69.w109-210.abo.wanadoo.fr. [109.210.96.69]) by smtp.gmail.com with ESMTPSA id q25sm477231wra.3.2019.10.22.01.43.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Oct 2019 01:43:28 -0700 (PDT) From: Bartosz Golaszewski To: Jonathan Corbet , Greg Kroah-Hartman , "Rafael J . Wysocki" , Arnd Bergmann , Linus Walleij Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Bartosz Golaszewski Subject: [RESEND PATCH v3 6/8] drivers: provide devm_platform_ioremap_resource_byname() Date: Tue, 22 Oct 2019 10:43:16 +0200 Message-Id: <20191022084318.22256-7-brgl@bgdev.pl> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191022084318.22256-1-brgl@bgdev.pl> References: <20191022084318.22256-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Bartosz Golaszewski Provide a variant of devm_platform_ioremap_resource() that allows to lookup resources from platform devices by name rather than by index. Signed-off-by: Bartosz Golaszewski Reviewed-by: Arnd Bergmann --- .../driver-api/driver-model/devres.rst | 1 + drivers/base/platform.c | 20 +++++++++++++++++++ include/linux/platform_device.h | 3 +++ 3 files changed, 24 insertions(+) diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst index 480b78ca3871..4ab193319d8c 100644 --- a/Documentation/driver-api/driver-model/devres.rst +++ b/Documentation/driver-api/driver-model/devres.rst @@ -319,6 +319,7 @@ IOMAP devm_ioremap_resource_wc() devm_platform_ioremap_resource() : calls devm_ioremap_resource() for platform device devm_platform_ioremap_resource_wc() + devm_platform_ioremap_resource_byname() devm_iounmap() pcim_iomap() pcim_iomap_regions() : do request_region() and iomap() on multiple BARs diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 177010c27516..5cdd72a9e186 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -95,6 +95,26 @@ void __iomem *devm_platform_ioremap_resource_wc(struct platform_device *pdev, res = platform_get_resource(pdev, IORESOURCE_MEM, index); return devm_ioremap_resource_wc(&pdev->dev, res); } + +/** + * devm_platform_ioremap_resource_byname - call devm_ioremap_resource for + * a platform device, retrieve the + * resource by name + * + * @pdev: platform device to use both for memory resource lookup as well as + * resource management + * @name: name of the resource + */ +void __iomem * +devm_platform_ioremap_resource_byname(struct platform_device *pdev, + const char *name) +{ + struct resource *res; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); + return devm_ioremap_resource(&pdev->dev, res); +} +EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource_byname); #endif /* CONFIG_HAS_IOMEM */ static int __platform_get_irq(struct platform_device *dev, unsigned int num) diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 74cecb919e5c..43fe441a98ea 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -60,6 +60,9 @@ devm_platform_ioremap_resource(struct platform_device *pdev, extern void __iomem * devm_platform_ioremap_resource_wc(struct platform_device *pdev, unsigned int index); +extern void __iomem * +devm_platform_ioremap_resource_byname(struct platform_device *pdev, + const char *name); extern int platform_get_irq(struct platform_device *, unsigned int); extern int platform_get_irq_optional(struct platform_device *, unsigned int); extern int platform_irq_count(struct platform_device *);