diff options
Diffstat (limited to 'drivers/mtd/nand/gpmi-nand/gpmi-nand.c')
| -rw-r--r-- | drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 25216785f180..717881a3d1b8 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -94,6 +94,25 @@ static inline int get_ecc_strength(struct gpmi_nand_data *this) return round_down(ecc_strength, 2); } +static inline bool gpmi_check_ecc(struct gpmi_nand_data *this) +{ + struct bch_geometry *geo = &this->bch_geometry; + + /* Do the sanity check. */ + if (GPMI_IS_MX23(this) || GPMI_IS_MX28(this)) { + /* The mx23/mx28 only support the GF13. */ + if (geo->gf_len == 14) + return false; + + if (geo->ecc_strength > MXS_ECC_STRENGTH_MAX) + return false; + } else if (GPMI_IS_MX6Q(this)) { + if (geo->ecc_strength > MX6_ECC_STRENGTH_MAX) + return false; + } + return true; +} + int common_nfc_set_geometry(struct gpmi_nand_data *this) { struct bch_geometry *geo = &this->bch_geometry; @@ -123,8 +142,13 @@ int common_nfc_set_geometry(struct gpmi_nand_data *this) /* We use the same ECC strength for all chunks. */ geo->ecc_strength = get_ecc_strength(this); - if (!geo->ecc_strength) { - pr_err("wrong ECC strength.\n"); + if (!gpmi_check_ecc(this)) { + dev_err(this->dev, + "We can not support this nand chip." + " Its required ecc strength(%d) is beyond our" + " capability(%d).\n", geo->ecc_strength, + (GPMI_IS_MX6Q(this) ? MX6_ECC_STRENGTH_MAX + : MXS_ECC_STRENGTH_MAX)); return -EINVAL; } |