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mtd: add helpers to set/get features for ONFI nand

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Add the set-features(0xef)/get-features(0xee) helpers for ONFI nand.
Also add the necessary macros.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Huang Shijie
2012-09-13 14:57:52 +08:00
committed by David Woodhouse
parent 2caf87a49e
commit 7db03eccfc
2 changed files with 64 additions and 0 deletions
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50
drivers/mtd/nand/nand_base.c
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@@ -2699,6 +2699,50 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs)
return chip->block_markbad(mtd, 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