From 3f158e47dfe92ee53f1e09c5fa76a07116100f02 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Wed, 3 Feb 2016 20:01:54 +0100 Subject: [PATCH] mtd: nand: gpmi: 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 Acked-by: Han Xu Tested-by: Han Xu --- drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 52 ++++++++++++++++++++++++++-------- 1 file changed, 40 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 4721008..c50523b 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -47,10 +47,44 @@ static struct nand_bbt_descr gpmi_bbt_descr = { * We may change the layout if we can get the ECC info from the datasheet, * else we will use all the (page + OOB). */ -static struct nand_ecclayout gpmi_hw_ecclayout = { - .eccbytes = 0, - .eccpos = { 0, }, - .oobfree = { {.offset = 0, .length = 0} } +static int gpmi_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct gpmi_nand_data *this = nand_get_controller_data(chip); + struct bch_geometry *geo = &this->bch_geometry; + + if (section) + return -ERANGE; + + oobregion->offset = 0; + oobregion->length = geo->page_size - mtd->writesize; + + return 0; +} + +static int gpmi_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct gpmi_nand_data *this = nand_get_controller_data(chip); + struct bch_geometry *geo = &this->bch_geometry; + + if (section) + return -ERANGE; + + /* The available oob size we have. */ + if (geo->page_size < mtd->writesize + mtd->oobsize) { + oobregion->offset = geo->page_size - mtd->writesize; + oobregion->length = mtd->oobsize - oobregion->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops gpmi_ooblayout_ops = { + .ecc = gpmi_ooblayout_ecc, + .free = gpmi_ooblayout_free, }; static const struct gpmi_devdata gpmi_devdata_imx23 = { @@ -141,7 +175,6 @@ static int set_geometry_by_ecc_info(struct gpmi_nand_data *this) struct bch_geometry *geo = &this->bch_geometry; struct nand_chip *chip = &this->nand; struct mtd_info *mtd = nand_to_mtd(chip); - struct nand_oobfree *of = gpmi_hw_ecclayout.oobfree; unsigned int block_mark_bit_offset; if (!(chip->ecc_strength_ds > 0 && chip->ecc_step_ds > 0)) @@ -229,12 +262,6 @@ static int set_geometry_by_ecc_info(struct gpmi_nand_data *this) geo->page_size = mtd->writesize + geo->metadata_size + (geo->gf_len * geo->ecc_strength * geo->ecc_chunk_count) / 8; - /* The available oob size we have. */ - if (geo->page_size < mtd->writesize + mtd->oobsize) { - of->offset = geo->page_size - mtd->writesize; - of->length = mtd->oobsize - of->offset; - } - geo->payload_size = mtd->writesize; geo->auxiliary_status_offset = ALIGN(geo->metadata_size, 4); @@ -1842,6 +1869,7 @@ static void gpmi_nand_exit(struct gpmi_nand_data *this) static int gpmi_init_last(struct gpmi_nand_data *this) { struct nand_chip *chip = &this->nand; + struct mtd_info *mtd = nand_to_mtd(chip); struct nand_ecc_ctrl *ecc = &chip->ecc; struct bch_geometry *bch_geo = &this->bch_geometry; int ret; @@ -1863,7 +1891,7 @@ static int gpmi_init_last(struct gpmi_nand_data *this) ecc->mode = NAND_ECC_HW; ecc->size = bch_geo->ecc_chunk_size; ecc->strength = bch_geo->ecc_strength; - ecc->layout = &gpmi_hw_ecclayout; + mtd_set_ooblayout(mtd, &gpmi_ooblayout_ops); /* * We only enable the subpage read when: -- 2.7.4