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Commit a8ed6e66 authored by Boris Brezillon's avatar Boris Brezillon
Browse files

mtd: nand: cafe: 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: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
parent ef5eeea6

drivers/mtd/nand/cafe_nand.c

+32 −12
Original line number Diff line number Diff line
@@ -459,10 +459,37 @@ 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.total;



	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);



	if (section)

		return -ERANGE;



	oobregion->offset = chip->ecc.total;

	oobregion->length = mtd->oobsize - chip->ecc.total;



	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 +521,6 @@ 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 +764,11 @@ 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 {