diff options
| author | pekon gupta <pekon@ti.com> | 2014-04-11 12:55:30 +0530 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-06-06 17:45:48 -0400 |
| commit | 41bbe4dd49a3825e024e874ee19c6527860a3f16 (patch) | |
| tree | c04b28965d10c1c89496859e761bafcf330f1ffa /drivers/mtd/nand/omap_gpmc.c | |
| parent | b98c5755c04eb5e15c614efefa7b9a2f3b0cd06c (diff) | |
mtd: nand: omap_elm: use bch_type instead of nibble count to differentiate between BCH4/BCH8/BCH16
ELM hardware engine support ECC error detection for multiple ECC strengths like
+------+------------------------+
|Type | ECC syndrome length |
+------+------------------------+
|BCH4 | 6.5 bytes = 13 nibbles |
|BCH8 | 13 byte = 26 nibbles |
|BCH16 | 26 bytes = 52 nibbles |
+------+------------------------+
Current implementation of omap_elm driver uses ECC syndrom length (in 'nibbles')
to differentiate between BCH4/BCH8/BCH16. This patch replaces it with 'bch_type'
Signed-off-by: Pekon Gupta <pekon@ti.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers/mtd/nand/omap_gpmc.c')
| -rw-r--r-- | drivers/mtd/nand/omap_gpmc.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c index bf99b8e675..e84bc7b060 100644 --- a/drivers/mtd/nand/omap_gpmc.c +++ b/drivers/mtd/nand/omap_gpmc.c @@ -153,7 +153,6 @@ static int __maybe_unused omap_correct_data(struct mtd_info *mtd, uint8_t *dat, struct nand_bch_priv { uint8_t mode; uint8_t type; - uint8_t nibbles; struct bch_control *control; enum omap_ecc ecc_scheme; }; @@ -163,11 +162,6 @@ struct nand_bch_priv { #define ECC_BCH8 1 #define ECC_BCH16 2 -/* BCH nibbles for diff bch levels */ -#define ECC_BCH4_NIBBLES 13 -#define ECC_BCH8_NIBBLES 26 -#define ECC_BCH16_NIBBLES 52 - /* * This can be a single instance cause all current users have only one NAND * with nearly the same setup (BCH8, some with ELM and others with sw BCH @@ -176,7 +170,6 @@ struct nand_bch_priv { */ static __maybe_unused struct nand_bch_priv bch_priv = { .type = ECC_BCH8, - .nibbles = ECC_BCH8_NIBBLES, .control = NULL }; @@ -383,7 +376,8 @@ static int omap_correct_data_bch(struct mtd_info *mtd, uint8_t *dat, } /* use elm module to check for errors */ elm_config((enum bch_level)(bch->type)); - if (elm_check_error(calc_ecc, bch->nibbles, &error_count, error_loc)) { + if (elm_check_error(calc_ecc, (enum bch_level)bch->type, + &error_count, error_loc)) { printf("nand: error: uncorrectable ECC errors\n"); return -EINVAL; } |