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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-02-03 20:02:41 +0100 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-05-05 23:51:45 +0200 |
| commit | d50b5239867f02627fc24c4450a87bd9c3267c0a (patch) | |
| tree | 1c5fcc488465ac8befa4e00e44a8fb3c66a85740 /drivers/mtd/nand/lpc32xx_mlc.c | |
| parent | 36886be7dd3b48f593d9da21c631d06d5bfae55d (diff) | |
| download | linux-d50b5239867f02627fc24c4450a87bd9c3267c0a.tar.gz linux-d50b5239867f02627fc24c4450a87bd9c3267c0a.tar.bz2 linux-d50b5239867f02627fc24c4450a87bd9c3267c0a.zip | |
mtd: nand: lpc32xx: switch to mtd_ooblayout_ops
Implementing the mtd_ooblayout_ops interface is the new way of exposing
ECC/OOB layout to MTD users.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/mtd/nand/lpc32xx_mlc.c')
| -rw-r--r-- | drivers/mtd/nand/lpc32xx_mlc.c | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c index 8e439787b04e..852388171f20 100644 --- a/drivers/mtd/nand/lpc32xx_mlc.c +++ b/drivers/mtd/nand/lpc32xx_mlc.c @@ -138,22 +138,37 @@ struct lpc32xx_nand_cfg_mlc { unsigned num_parts; }; -static struct nand_ecclayout lpc32xx_nand_oob = { - .eccbytes = 40, - .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 = 0, - .length = 6, }, - { .offset = 16, - .length = 6, }, - { .offset = 32, - .length = 6, }, - { .offset = 48, - .length = 6, }, - }, +static int lpc32xx_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *nand_chip = mtd_to_nand(mtd); + + if (section >= nand_chip->ecc.steps) + return -ERANGE; + + oobregion->offset = ((section + 1) * 16) - nand_chip->ecc.bytes; + oobregion->length = nand_chip->ecc.bytes; + + return 0; +} + +static int lpc32xx_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *nand_chip = mtd_to_nand(mtd); + + if (section >= nand_chip->ecc.steps) + return -ERANGE; + + oobregion->offset = 16 * section; + oobregion->length = 16 - nand_chip->ecc.bytes; + + return 0; +} + +static const struct mtd_ooblayout_ops lpc32xx_ooblayout_ops = { + .ecc = lpc32xx_ooblayout_ecc, + .free = lpc32xx_ooblayout_free, }; static struct nand_bbt_descr lpc32xx_nand_bbt = { @@ -712,6 +727,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) nand_chip->ecc.write_oob = lpc32xx_write_oob; nand_chip->ecc.read_oob = lpc32xx_read_oob; nand_chip->ecc.strength = 4; + nand_chip->ecc.bytes = 10; nand_chip->waitfunc = lpc32xx_waitfunc; nand_chip->options = NAND_NO_SUBPAGE_WRITE; @@ -750,7 +766,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; - nand_chip->ecc.layout = &lpc32xx_nand_oob; + mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops); host->mlcsubpages = mtd->writesize / 512; /* initially clear interrupt status */ |