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Commit 6b75065e authored by Boris Brezillon's avatar Boris Brezillon
Browse files

mtd: nand: docg4: 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 68c1b754

drivers/mtd/nand/docg4.c

+28 −5
Original line number Diff line number Diff line
@@ -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;