Implementing the mtd_ooblayout_ops interface is the new way of exposing ECC/OOB layout to MTD users.
Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com> --- drivers/mtd/nand/sm_common.c | 93 ++++++++++++++++++++++++++++++++++++-------- 1 file changed, 77 insertions(+), 16 deletions(-) diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c index c514740..5939dff 100644 --- a/drivers/mtd/nand/sm_common.c +++ b/drivers/mtd/nand/sm_common.c @@ -12,14 +12,47 @@ #include <linux/sizes.h> #include "sm_common.h" -static struct nand_ecclayout nand_oob_sm = { - .eccbytes = 6, - .eccpos = {8, 9, 10, 13, 14, 15}, - .oobfree = { - {.offset = 0 , .length = 4}, /* reserved */ - {.offset = 6 , .length = 2}, /* LBA1 */ - {.offset = 11, .length = 2} /* LBA2 */ +static int oob_sm_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section > 1) + return -ERANGE; + + oobregion->length = 3; + oobregion->offset = ((section + 1) * 8) - 3; + + return 0; +} + +static int oob_sm_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + switch (section) { + case 0: + /* reserved */ + oobregion->offset = 0; + oobregion->length = 4; + break; + case 1: + /* LBA1 */ + oobregion->offset = 6; + oobregion->length = 2; + break; + case 2: + /* LBA2 */ + oobregion->offset = 11; + oobregion->length = 2; + break; + default: + return -ERANGE; } + + return 0; +} + +static const struct mtd_ooblayout_ops oob_sm_ops = { + .ecc = oob_sm_ooblayout_ecc, + .free = oob_sm_ooblayout_free, }; /* NOTE: This layout is is not compatabable with SmartMedia, */ @@ -28,15 +61,43 @@ static struct nand_ecclayout nand_oob_sm = { /* If you use smftl, it will bypass this and work correctly */ /* If you not, then you break SmartMedia compliance anyway */ -static struct nand_ecclayout nand_oob_sm_small = { - .eccbytes = 3, - .eccpos = {0, 1, 2}, - .oobfree = { - {.offset = 3 , .length = 2}, /* reserved */ - {.offset = 6 , .length = 2}, /* LBA1 */ +static int oob_sm_small_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section) + return -ERANGE; + + oobregion->length = 3; + oobregion->offset = 0; + + return 0; +} + +static int oob_sm_small_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + switch (section) { + case 0: + /* reserved */ + oobregion->offset = 3; + oobregion->length = 2; + break; + case 1: + /* LBA1 */ + oobregion->offset = 6; + oobregion->length = 2; + break; + default: + return -ERANGE; } -}; + return 0; +} + +static const struct mtd_ooblayout_ops oob_sm_small_ops = { + .ecc = oob_sm_small_ooblayout_ecc, + .free = oob_sm_small_ooblayout_free, +}; static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) { @@ -121,9 +182,9 @@ int sm_register_device(struct mtd_info *mtd, int smartmedia) /* ECC layout */ if (mtd->writesize == SM_SECTOR_SIZE) - chip->ecc.layout = &nand_oob_sm; + mtd_set_ooblayout(mtd, &oob_sm_ops); else if (mtd->writesize == SM_SMALL_PAGE) - chip->ecc.layout = &nand_oob_sm_small; + mtd_set_ooblayout(mtd, &oob_sm_small_ops); else return -ENODEV; -- 2.1.4 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.