diff options
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 88f671cb96c..d06a80d4ee7 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2700,6 +2700,50 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) } /** + * nand_onfi_set_features- [REPLACEABLE] set features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. + */ +static int nand_onfi_set_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + int status; + + if (!chip->onfi_version) + return -EINVAL; + + chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, addr, -1); + chip->write_buf(mtd, subfeature_param, ONFI_SUBFEATURE_PARAM_LEN); + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + return -EIO; + return 0; +} + +/** + * nand_onfi_get_features- [REPLACEABLE] get features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. + */ +static int nand_onfi_get_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + if (!chip->onfi_version) + return -EINVAL; + + /* clear the sub feature parameters */ + memset(subfeature_param, 0, ONFI_SUBFEATURE_PARAM_LEN); + + chip->cmdfunc(mtd, NAND_CMD_GET_FEATURES, addr, -1); + chip->read_buf(mtd, subfeature_param, ONFI_SUBFEATURE_PARAM_LEN); + return 0; +} + +/** * nand_suspend - [MTD Interface] Suspend the NAND flash * @mtd: MTD device structure */ @@ -3223,6 +3267,12 @@ int nand_scan_tail(struct mtd_info *mtd) if (!chip->write_page) chip->write_page = nand_write_page; + /* set for ONFI nand */ + if (!chip->onfi_set_features) + chip->onfi_set_features = nand_onfi_set_features; + if (!chip->onfi_get_features) + chip->onfi_get_features = nand_onfi_get_features; + /* * Check ECC mode, default to software if 3byte/512byte hardware ECC is * selected and we have 256 byte pagesize fallback to software ECC |