From patchwork Mon Dec 9 09:21:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 180991 Delivered-To: patch@linaro.org Received: by 2002:a92:3001:0:0:0:0:0 with SMTP id x1csp4097762ile; Mon, 9 Dec 2019 01:21:00 -0800 (PST) X-Google-Smtp-Source: APXvYqzzQ0hR2gMuXl7KNC1b5frlIUe2+/6gY5p5zIq3oR4phCh1DaOuU+qvcviKWoyzI04yb3xP X-Received: by 2002:aca:120e:: with SMTP id 14mr21971224ois.135.1575883260218; Mon, 09 Dec 2019 01:21:00 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1575883260; cv=none; d=google.com; s=arc-20160816; b=kZpOncZVxBhHxhbOM0ghqwiB8jbe0I4jjoOdthqGt67v4FgNjLDqb1ZVMRP5JnpSIY v/mZYXPgkcuyouKtUN5rad1lXhRY+EGRhte4vH44xDSH+5GQAxBn+0GWLDoH0aBnIJ04 Q9o647Y3l+AGzlyAi0YHhJARXtSgnj1dkbcxsz7T9ENa3EMTzL23xcEYsWBR047dx8ca gB9u3DUbh6ME2ozSFjXcDGeZaOMgROIc0DQJXky7AV2ZHAmGaT0gP8OakCnJTpnL8rOg 8VYK8bOGW8c1CWd3xlm06Qm0KHKstGo7jHAOE6tShvXBesvhwMNjDPzeJT9/tYckYe3r O5lg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:dkim-signature; bh=Rc8YT4TU+I5HtgVac7UO4Rq0QTyfIQpD6Hq6n/QrUS8=; b=UC95RoPH1SiGwMQklgDs499KbRJGzgRJflhwHjPa88qbkpN9zt9ebducLjFLLPAOn7 ++OENXnwWwiJarzPdfHBx8Y8Ec1izqQ85Atd2w+Il9psN2V2BGbr3/FaIox7+3W29jYK x61h2/5b5nASowH9CTiqQlbS0KrMDJsgKDSxzKBVQ7uZUfP5/w+QPGBNtctv+OzfUjwF tt+10HxGVGZO2SeF+7gLnmkhglZE4AdWXaTZnVVHjv+jz8QhsnC3S+aWTyKEKjNu62xe aMNsTSNZxcITnURKvN2LEjGdK9k86du3Ec9PtId4ZZa/yF6gVyPLxkt37fjzbS6Zl25V BjAw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=VHiW7Jil; spf=pass (google.com: best guess record for domain of linux-omap-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-omap-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id z1si12207580otq.21.2019.12.09.01.21.00; Mon, 09 Dec 2019 01:21:00 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-omap-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=VHiW7Jil; spf=pass (google.com: best guess record for domain of linux-omap-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-omap-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727560AbfLIJU6 (ORCPT + 4 others); Mon, 9 Dec 2019 04:20:58 -0500 Received: from fllv0016.ext.ti.com ([198.47.19.142]:49872 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727557AbfLIJU5 (ORCPT ); Mon, 9 Dec 2019 04:20:57 -0500 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id xB99KnEU080830; Mon, 9 Dec 2019 03:20:49 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1575883249; bh=Rc8YT4TU+I5HtgVac7UO4Rq0QTyfIQpD6Hq6n/QrUS8=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=VHiW7JillEOrSZWda9veBLmtw6mln3Sx8gpw9TB3pNHOSD71QX2DN0glIBazzWJg0 3vwr4/aZJuxWx6fDhYgj5s1W0GftJmfv4iKySA1dyC9PoZkMkDdQKQ7jLEQpIl5JXy 6upHxnMJ5GjRc3dlxHMuxR8xQqv50fQ38if9jdRE= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id xB99KnAT063135 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 9 Dec 2019 03:20:49 -0600 Received: from DFLE113.ent.ti.com (10.64.6.34) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Mon, 9 Dec 2019 03:20:49 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Mon, 9 Dec 2019 03:20:48 -0600 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id xB99Kcd0087697; Mon, 9 Dec 2019 03:20:46 -0600 From: Kishon Vijay Abraham I To: Bjorn Helgaas , Lorenzo Pieralisi , Rob Herring , Arnd Bergmann , Andrew Murray CC: , , , , Kishon Vijay Abraham I Subject: [PATCH 02/13] linux/kernel.h: Add PTR_ALIGN_DOWN macro Date: Mon, 9 Dec 2019 14:51:36 +0530 Message-ID: <20191209092147.22901-3-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191209092147.22901-1-kishon@ti.com> References: <20191209092147.22901-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Add a macro for aligning down a pointer. This is useful to get an aligned register address when a device allows only word access and doesn't allow half word or byte access. Signed-off-by: Kishon Vijay Abraham I --- include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+) -- 2.17.1 diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 3adcb39fa6f5..888ad70a80aa 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -34,6 +34,7 @@ #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a)) #define __ALIGN_MASK(x, mask) __ALIGN_KERNEL_MASK((x), (mask)) #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) +#define PTR_ALIGN_DOWN(p, a) ((typeof(p))ALIGN_DOWN((unsigned long)(p), (a))) #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) /* generic data direction definitions */