diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/atmel_nand.c | 19 | ||||
| -rw-r--r-- | drivers/mtd/nand/atmel_nand_ecc.h | 1 |
2 files changed, 18 insertions, 2 deletions
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index d883279f58ce..20cbaabb2959 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -475,6 +475,7 @@ static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len) * 8-bits 13-bytes 14-bytes * 12-bits 20-bytes 21-bytes * 24-bits 39-bytes 42-bytes + * 32-bits 52-bytes 56-bytes */ static int pmecc_get_ecc_bytes(int cap, int sector_size) { @@ -1024,6 +1025,9 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) case 24: val = PMECC_CFG_BCH_ERR24; break; + case 32: + val = PMECC_CFG_BCH_ERR32; + break; } if (host->pmecc_sector_size == 512) @@ -1085,6 +1089,9 @@ static int pmecc_choose_ecc(struct atmel_nand_host *host, /* If device tree doesn't specify, use NAND's minimum ECC parameters */ if (host->pmecc_corr_cap == 0) { + if (*cap > host->caps->pmecc_max_correction) + return -EINVAL; + /* use the most fitable ecc bits (the near bigger one ) */ if (*cap <= 2) host->pmecc_corr_cap = 2; @@ -1096,6 +1103,8 @@ static int pmecc_choose_ecc(struct atmel_nand_host *host, host->pmecc_corr_cap = 12; else if (*cap <= 24) host->pmecc_corr_cap = 24; + else if (*cap <= 32) + host->pmecc_corr_cap = 32; else return -EINVAL; } @@ -1554,8 +1563,14 @@ static int atmel_of_init_port(struct atmel_nand_host *host, * them from NAND ONFI parameters. */ if (of_property_read_u32(np, "atmel,pmecc-cap", &val) == 0) { - if ((val != 2) && (val != 4) && (val != 8) && (val != 12) && - (val != 24)) { + if (val > host->caps->pmecc_max_correction) { + dev_err(host->dev, + "Required ECC strength too high: %u max %u\n", + val, host->caps->pmecc_max_correction); + return -EINVAL; + } + if ((val != 2) && (val != 4) && (val != 8) && + (val != 12) && (val != 24) && (val != 32)) { dev_err(host->dev, "Required ECC strength not supported: %u\n", val); diff --git a/drivers/mtd/nand/atmel_nand_ecc.h b/drivers/mtd/nand/atmel_nand_ecc.h index ec964c43c932..834d694487bd 100644 --- a/drivers/mtd/nand/atmel_nand_ecc.h +++ b/drivers/mtd/nand/atmel_nand_ecc.h @@ -43,6 +43,7 @@ #define PMECC_CFG_BCH_ERR8 (2 << 0) #define PMECC_CFG_BCH_ERR12 (3 << 0) #define PMECC_CFG_BCH_ERR24 (4 << 0) +#define PMECC_CFG_BCH_ERR32 (5 << 0) #define PMECC_CFG_SECTOR512 (0 << 4) #define PMECC_CFG_SECTOR1024 (1 << 4) |