From patchwork Fri Feb 26 00:57:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 8429891 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 85136C0553 for ; Fri, 26 Feb 2016 01:15:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B308B202E6 for ; Fri, 26 Feb 2016 01:15:27 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AE8FA202B8 for ; Fri, 26 Feb 2016 01:15:26 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aZ6yb-0004mN-6G; Fri, 26 Feb 2016 01:13:49 +0000 Received: from down.free-electrons.com ([37.187.137.238] helo=mail.free-electrons.com) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aZ6pk-0001NK-FV; Fri, 26 Feb 2016 01:04:47 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id 19A194C90; Fri, 26 Feb 2016 02:04:20 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost.localdomain (unknown [208.66.31.210]) by mail.free-electrons.com (Postfix) with ESMTPSA id 4A4F843F; Fri, 26 Feb 2016 02:01:17 +0100 (CET) From: Boris Brezillon To: David Woodhouse , Brian Norris , linux-mtd@lists.infradead.org Subject: [PATCH v3 28/52] mtd: nand: cafe: switch to mtd_ooblayout_ops Date: Fri, 26 Feb 2016 01:57:36 +0100 Message-Id: <1456448280-27788-29-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1456448280-27788-1-git-send-email-boris.brezillon@free-electrons.com> References: <1456448280-27788-1-git-send-email-boris.brezillon@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160225_170441_671538_0D7187A4 X-CRM114-Status: GOOD ( 17.18 ) X-Spam-Score: -1.9 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mips@linux-mips.org, Krzysztof Kozlowski , Nicolas Ferre , Stefan Agner , linux-sunxi@googlegroups.com, Alexandre Belloni , punnaiah choudary kalluri , Robert Jarzmik , devel@driverdev.osuosl.org, Boris Brezillon , linux-samsung-soc@vger.kernel.org, Kamal Dasu , Josh Wu , Chen-Yu Tsai , Kukjin Kim , bcm-kernel-feedback-list@broadcom.com, Ezequiel Garcia , Jean-Christophe Plagniol-Villard , Haojian Zhuang , linux-arm-kernel@lists.infradead.org, Priit Laes , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Ralf Baechle , Wenyou Yang , Kyungmin Park , linux-api@vger.kernel.org, Maxime Ripard , Daniel Mack MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Implementing the mtd_ooblayout_ops interface is the new way of exposing ECC/OOB layout to MTD users. Signed-off-by: Boris Brezillon --- drivers/mtd/nand/cafe_nand.c | 45 ++++++++++++++++++++++++++++++++------------ 1 file changed, 33 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index aa1a616..0935b7c 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -459,10 +459,38 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, return max_bitflips; } -static struct nand_ecclayout cafe_oobinfo_2048 = { - .eccbytes = 14, - .eccpos = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, - .oobfree = {{14, 50}} +static int cafe_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (section) + return -ERANGE; + + oobregion->offset = 0; + oobregion->length = chip->ecc.steps * chip->ecc.bytes; + + return 0; +} + +static int cafe_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.steps * chip->ecc.bytes; + + if (section) + return -ERANGE; + + oobregion->offset = eccbytes; + oobregion->length = mtd->oobsize - eccbytes; + + return 0; +} + +static const struct mtd_ooblayout_ops cafe_ooblayout_ops = { + .ecc = cafe_ooblayout_ecc, + .free = cafe_ooblayout_free, }; /* Ick. The BBT code really ought to be able to work this bit out @@ -494,12 +522,6 @@ static struct nand_bbt_descr cafe_bbt_mirror_descr_2048 = { .pattern = cafe_mirror_pattern_2048 }; -static struct nand_ecclayout cafe_oobinfo_512 = { - .eccbytes = 14, - .eccpos = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, - .oobfree = {{14, 2}} -}; - static struct nand_bbt_descr cafe_bbt_main_descr_512 = { .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | NAND_BBT_2BIT | NAND_BBT_VERSION, @@ -743,12 +765,11 @@ static int cafe_nand_probe(struct pci_dev *pdev, cafe->ctl2 |= 1<<29; /* 2KiB page size */ /* Set up ECC according to the type of chip we found */ + mtd_set_ooblayout(mtd, &cafe_ooblayout_ops); if (mtd->writesize == 2048) { - cafe->nand.ecc.layout = &cafe_oobinfo_2048; cafe->nand.bbt_td = &cafe_bbt_main_descr_2048; cafe->nand.bbt_md = &cafe_bbt_mirror_descr_2048; } else if (mtd->writesize == 512) { - cafe->nand.ecc.layout = &cafe_oobinfo_512; cafe->nand.bbt_td = &cafe_bbt_main_descr_512; cafe->nand.bbt_md = &cafe_bbt_mirror_descr_512; } else {