From patchwork Wed Jun 3 17:57:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 199600 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33600C433DF for ; Wed, 3 Jun 2020 17:58:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 226F42068D for ; Wed, 3 Jun 2020 17:58:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726268AbgFCR61 (ORCPT ); Wed, 3 Jun 2020 13:58:27 -0400 Received: from relay10.mail.gandi.net ([217.70.178.230]:52421 "EHLO relay10.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726262AbgFCR61 (ORCPT ); Wed, 3 Jun 2020 13:58:27 -0400 Received: from localhost.localdomain (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay10.mail.gandi.net (Postfix) with ESMTPSA id E51DB24000B; Wed, 3 Jun 2020 17:58:24 +0000 (UTC) From: Miquel Raynal To: Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , Cc: Boris Brezillon , Thomas Petazzoni , , Mason Yang , Julien Su , Rob Herring , Mark Rutland , , Miquel Raynal Subject: [PATCH v10 11/20] mtd: nand: Create a helper to extract the ECC configuration Date: Wed, 3 Jun 2020 19:57:50 +0200 Message-Id: <20200603175759.19948-12-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200603175759.19948-1-miquel.raynal@bootlin.com> References: <20200603175759.19948-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Despite its current name, the eccreq field actually encodes both the NAND requirements and the final ECC configuration. That works fine when using on-die ECC since those 2 concepts match perfectly, but it starts being a problem as soon as we use on-host ECC engines, where we're not guaranteed to have a perfect match. Let's hide the ECC configuration access behind a helper so we can later split those 2 concepts. Signed-off-by: Miquel Raynal --- include/linux/mtd/nand.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8cf5bdbea782..9cbb41a5541c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -523,6 +523,16 @@ nanddev_get_memorg(struct nand_device *nand) return &nand->memorg; } +/** + * nanddev_get_ecc_conf() - Extract the ECC configuration from a NAND device + * @nand: NAND device + */ +static inline const struct nand_ecc_props * +nanddev_get_ecc_conf(struct nand_device *nand) +{ + return &nand->eccreq; +} + int nanddev_init(struct nand_device *nand, const struct nand_ops *ops, struct module *owner); void nanddev_cleanup(struct nand_device *nand);