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mtd: nand: denali: 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>
This commit is contained in:
Boris Brezillon 2016-02-03 20:00:11 +01:00
parent e4aacaa1b1
commit 14fad62b68
1 changed files with 35 additions and 15 deletions
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50
drivers/mtd/nand/denali.c
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@ -1374,13 +1374,41 @@ static void denali_hw_init(struct denali_nand_info *denali)
* correction
*/
#define ECC_8BITS 14
static struct nand_ecclayout nand_8bit_oob = {
.eccbytes = 14,
};
#define ECC_15BITS 26
static struct nand_ecclayout nand_15bit_oob = {
.eccbytes = 26,
static int denali_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
struct nand_chip *chip = mtd_to_nand(mtd);
if (section)
return -ERANGE;
oobregion->offset = denali->bbtskipbytes;
oobregion->length = chip->ecc.total;
return 0;
}
static int denali_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
struct nand_chip *chip = mtd_to_nand(mtd);
if (section)
return -ERANGE;
oobregion->offset = chip->ecc.total + denali->bbtskipbytes;
oobregion->length = mtd->oobsize - oobregion->offset;
return 0;
}
static const struct mtd_ooblayout_ops denali_ooblayout_ops = {
.ecc = denali_ooblayout_ecc,
.free = denali_ooblayout_free,
};
static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' };
@ -1561,7 +1589,6 @@ int denali_init(struct denali_nand_info *denali)
ECC_SECTOR_SIZE)))) {
/* if MLC OOB size is large enough, use 15bit ECC*/
denali->nand.ecc.strength = 15;
denali->nand.ecc.layout = &nand_15bit_oob;
denali->nand.ecc.bytes = ECC_15BITS;
iowrite32(15, denali->flash_reg + ECC_CORRECTION);
} else if (mtd->oobsize < (denali->bbtskipbytes +
@ -1571,20 +1598,13 @@ int denali_init(struct denali_nand_info *denali)
goto failed_req_irq;
} else {
denali->nand.ecc.strength = 8;
denali->nand.ecc.layout = &nand_8bit_oob;
denali->nand.ecc.bytes = ECC_8BITS;
iowrite32(8, denali->flash_reg + ECC_CORRECTION);
}
mtd_set_ooblayout(mtd, &denali_ooblayout_ops);
denali->nand.ecc.bytes *= denali->devnum;
denali->nand.ecc.strength *= denali->devnum;
denali->nand.ecc.layout->eccbytes *=
mtd->writesize / ECC_SECTOR_SIZE;
denali->nand.ecc.layout->oobfree[0].offset =
denali->bbtskipbytes + denali->nand.ecc.layout->eccbytes;
denali->nand.ecc.layout->oobfree[0].length =
mtd->oobsize - denali->nand.ecc.layout->eccbytes -
denali->bbtskipbytes;
/*
* Let driver know the total blocks number and how many blocks