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mtd: nand: omap2: Update nerrors using ecc.strength

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Remove check of ecc bytes with 13, number of errors can directly update
from nand ecc strength. This will increase re-usability of the code.
Also add macro definitions BCH8_ERROR_MAX & BCH4_ERROR_MAX for better
readability and cleaner code.

Signed-off-by: Philip Avinash <avinashphilip@ti.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
This commit is contained in:
Philip Avinash 2013-01-04 13:26:49 +05:30 committed by Artem Bityutskiy
parent a8459f21ed
commit c3e4b995e4
1 changed files with 8 additions and 4 deletions
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12
drivers/mtd/nand/omap2.c
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@ -117,6 +117,9 @@
#define OMAP24XX_DMA_GPMC 4
#define BCH8_MAX_ERROR 8 /* upto 8 bit correctable */
#define BCH4_MAX_ERROR 4 /* upto 4 bit correctable */
/* oob info generated runtime depending on ecc algorithm and layout selected */
static struct nand_ecclayout omap_oobinfo;
/* Define some generic bad / good block scan pattern which are used
@ -1041,7 +1044,7 @@ static void omap3_enable_hwecc_bch(struct mtd_info *mtd, int mode)
struct nand_chip *chip = mtd->priv;
u32 val;
nerrors = (info->nand.ecc.bytes == 13) ? 8 : 4;
nerrors = info->nand.ecc.strength;
dev_width = (chip->options & NAND_BUSWIDTH_16) ? 1 : 0;
nsectors = 1;
/*
@ -1218,13 +1221,14 @@ static int omap3_init_bch(struct mtd_info *mtd, int ecc_opt)
struct omap_nand_info *info = container_of(mtd, struct omap_nand_info,
mtd);
#ifdef CONFIG_MTD_NAND_OMAP_BCH8
const int hw_errors = 8;
const int hw_errors = BCH8_MAX_ERROR;
#else
const int hw_errors = 4;
const int hw_errors = BCH4_MAX_ERROR;
#endif
info->bch = NULL;
max_errors = (ecc_opt == OMAP_ECC_BCH8_CODE_HW) ? 8 : 4;
max_errors = (ecc_opt == OMAP_ECC_BCH8_CODE_HW) ?
BCH8_MAX_ERROR : BCH4_MAX_ERROR;
if (max_errors != hw_errors) {
pr_err("cannot configure %d-bit BCH ecc, only %d-bit supported",
max_errors, hw_errors);