diff options
| author | Mason Yang <masonccyang@mxic.com.tw> | 2020-03-03 15:21:21 +0800 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-03-11 16:17:55 +0100 |
| commit | 92270086b7e5ada7ab381c06cc3da2e95ed17088 (patch) | |
| tree | 428c40986e002288c1770dba04802b0aa7eab2fa /drivers/mtd | |
| parent | e015d72f321e8b54aa3aef680e85dcd87f912703 (diff) | |
mtd: rawnand: Add support for manufacturer specific lock/unlock operation
Add nand_lock() & nand_unlock() for manufacturer specific lock & unlock
operation while the device supports Block Portection function.
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/1583220084-10890-2-git-send-email-masonccyang@mxic.com.tw
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/nand_base.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index a3ed6c54963e..a13b91aa3780 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4365,6 +4365,38 @@ static void nand_shutdown(struct mtd_info *mtd) nand_suspend(mtd); } +/** + * nand_lock - [MTD Interface] Lock the NAND flash + * @mtd: MTD device structure + * @ofs: offset byte address + * @len: number of bytes to lock (must be a multiple of block/page size) + */ +static int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (!chip->lock_area) + return -ENOTSUPP; + + return chip->lock_area(chip, ofs, len); +} + +/** + * nand_unlock - [MTD Interface] Unlock the NAND flash + * @mtd: MTD device structure + * @ofs: offset byte address + * @len: number of bytes to unlock (must be a multiple of block/page size) + */ +static int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (!chip->unlock_area) + return -ENOTSUPP; + + return chip->unlock_area(chip, ofs, len); +} + /* Set default functions */ static void nand_set_defaults(struct nand_chip *chip) { @@ -5791,8 +5823,8 @@ static int nand_scan_tail(struct nand_chip *chip) mtd->_read_oob = nand_read_oob; mtd->_write_oob = nand_write_oob; mtd->_sync = nand_sync; - mtd->_lock = NULL; - mtd->_unlock = NULL; + mtd->_lock = nand_lock; + mtd->_unlock = nand_unlock; mtd->_suspend = nand_suspend; mtd->_resume = nand_resume; mtd->_reboot = nand_shutdown; |