Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753142AbcCGJvC (ORCPT ); Mon, 7 Mar 2016 04:51:02 -0500 Received: from down.free-electrons.com ([37.187.137.238]:35342 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753011AbcCGJuS (ORCPT ); Mon, 7 Mar 2016 04:50:18 -0500 From: Boris Brezillon To: David Woodhouse , Brian Norris , linux-mtd@lists.infradead.org Cc: Daniel Mack , Haojian Zhuang , Robert Jarzmik , Kukjin Kim , Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Ralf Baechle , linux-mips@linux-mips.org, Nicolas Ferre , Jean-Christophe Plagniol-Villard , Alexandre Belloni , Wenyou Yang , Josh Wu , Ezequiel Garcia , Maxime Ripard , Chen-Yu Tsai , linux-sunxi@googlegroups.com, Stefan Agner , Kyungmin Park , Greg Kroah-Hartman , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, punnaiah choudary kalluri , Priit Laes , Kamal Dasu , bcm-kernel-feedback-list@broadcom.com, linux-api@vger.kernel.org, Harvey Hunt , Boris Brezillon Subject: [PATCH v4 45/52] mtd: nand: sh_flctl: switch to mtd_ooblayout_ops Date: Mon, 7 Mar 2016 10:47:35 +0100 Message-Id: <1457344062-11633-46-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1457344062-11633-1-git-send-email-boris.brezillon@free-electrons.com> References: <1457344062-11633-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3201 Lines: 119 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/sh_flctl.c | 87 ++++++++++++++++++++++++++++++++++----------- 1 file changed, 67 insertions(+), 20 deletions(-) diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index 4814402..fa46610 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -43,26 +43,73 @@ #include #include -static struct nand_ecclayout flctl_4secc_oob_16 = { - .eccbytes = 10, - .eccpos = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, - .oobfree = { - {.offset = 12, - . length = 4} }, +static int flctl_4secc_ooblayout_sp_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.bytes; + + return 0; +} + +static int flctl_4secc_ooblayout_sp_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section) + return -ERANGE; + + oobregion->offset = 12; + oobregion->length = 4; + + return 0; +} + +static const struct mtd_ooblayout_ops flctl_4secc_oob_smallpage_ops = { + .ecc = flctl_4secc_ooblayout_sp_ecc, + .free = flctl_4secc_ooblayout_sp_free, }; -static struct nand_ecclayout flctl_4secc_oob_64 = { - .eccbytes = 4 * 10, - .eccpos = { - 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, - 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 }, - .oobfree = { - {.offset = 2, .length = 4}, - {.offset = 16, .length = 6}, - {.offset = 32, .length = 6}, - {.offset = 48, .length = 6} }, +static int flctl_4secc_ooblayout_lp_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (section >= chip->ecc.steps) + return -ERANGE; + + oobregion->offset = (section * 16) + 6; + oobregion->length = chip->ecc.bytes; + + return 0; +} + +static int flctl_4secc_ooblayout_lp_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (section >= chip->ecc.steps) + return -ERANGE; + + oobregion->offset = section * 16; + oobregion->length = 6; + + if (!section) { + oobregion->offset += 2; + oobregion->length -= 2; + } + + return 0; +} + +static const struct mtd_ooblayout_ops flctl_4secc_oob_largepage_ops = { + .ecc = flctl_4secc_ooblayout_lp_ecc, + .free = flctl_4secc_ooblayout_lp_free, }; static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; @@ -987,10 +1034,10 @@ static int flctl_chip_init_tail(struct mtd_info *mtd) if (flctl->hwecc) { if (mtd->writesize == 512) { - chip->ecc.layout = &flctl_4secc_oob_16; + mtd_set_ooblayout(mtd, &flctl_4secc_oob_smallpage_ops); chip->badblock_pattern = &flctl_4secc_smallpage; } else { - chip->ecc.layout = &flctl_4secc_oob_64; + mtd_set_ooblayout(mtd, &flctl_4secc_oob_largepage_ops); chip->badblock_pattern = &flctl_4secc_largepage; } -- 2.1.4