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mtd: nand: docg4: switch to mtd_ooblayout_ops

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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>
This commit is contained in:
Boris Brezillon 2016-02-03 20:00:35 +01:00
parent 68c1b75482
commit 6b75065e0d
1 changed files with 28 additions and 5 deletions
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33
drivers/mtd/nand/docg4.c
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@ -222,10 +222,33 @@ struct docg4_priv {
* Bytes 8 - 14 are hw-generated ecc covering entire page + oob bytes 0 - 14.
* Byte 15 (the last) is used by the driver as a "page written" flag.
*/
static struct nand_ecclayout docg4_oobinfo = {
.eccbytes = 9,
.eccpos = {7, 8, 9, 10, 11, 12, 13, 14, 15},
.oobfree = { {.offset = 2, .length = 5} }
static int docg4_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
if (section)
return -ERANGE;
oobregion->offset = 7;
oobregion->length = 9;
return 0;
}
static int docg4_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
if (section)
return -ERANGE;
oobregion->offset = 2;
oobregion->length = 5;
return 0;
}
static const struct mtd_ooblayout_ops docg4_ooblayout_ops = {
.ecc = docg4_ooblayout_ecc,
.free = docg4_ooblayout_free,
};
/*
@ -1209,6 +1232,7 @@ static void __init init_mtd_structs(struct mtd_info *mtd)
mtd->writesize = DOCG4_PAGE_SIZE;
mtd->erasesize = DOCG4_BLOCK_SIZE;
mtd->oobsize = DOCG4_OOB_SIZE;
mtd_set_ooblayout(mtd, &docg4_ooblayout_ops);
nand->chipsize = DOCG4_CHIP_SIZE;
nand->chip_shift = DOCG4_CHIP_SHIFT;
nand->bbt_erase_shift = nand->phys_erase_shift = DOCG4_ERASE_SHIFT;
@ -1217,7 +1241,6 @@ static void __init init_mtd_structs(struct mtd_info *mtd)
nand->pagemask = 0x3ffff;
nand->badblockpos = NAND_LARGE_BADBLOCK_POS;
nand->badblockbits = 8;
nand->ecc.layout = &docg4_oobinfo;
nand->ecc.mode = NAND_ECC_HW_SYNDROME;
nand->ecc.size = DOCG4_PAGE_SIZE;
nand->ecc.prepad = 8;