diff options
| -rw-r--r-- | drivers/of/of_mtd.c | 34 | ||||
| -rw-r--r-- | include/of_mtd.h | 2 |
2 files changed, 36 insertions, 0 deletions
diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c index 97f3095740..0956ee15d3 100644 --- a/drivers/of/of_mtd.c +++ b/drivers/of/of_mtd.c @@ -49,6 +49,40 @@ int of_get_nand_ecc_mode(struct device_node *np) EXPORT_SYMBOL_GPL(of_get_nand_ecc_mode); /** + * of_get_nand_ecc_step_size - Get ECC step size associated to + * the required ECC strength (see below). + * @np: Pointer to the given device_node + * + * return the ECC step size, or errno in error case. + */ +int of_get_nand_ecc_step_size(struct device_node *np) +{ + int ret; + u32 val; + + ret = of_property_read_u32(np, "nand-ecc-step-size", &val); + return ret ? ret : val; +} +EXPORT_SYMBOL_GPL(of_get_nand_ecc_step_size); + +/** + * of_get_nand_ecc_strength - Get required ECC strength over the + * correspnding step size as defined by 'nand-ecc-size' + * @np: Pointer to the given device_node + * + * return the ECC strength, or errno in error case. + */ +int of_get_nand_ecc_strength(struct device_node *np) +{ + int ret; + u32 val; + + ret = of_property_read_u32(np, "nand-ecc-strength", &val); + return ret ? ret : val; +} +EXPORT_SYMBOL_GPL(of_get_nand_ecc_strength); + +/** * of_get_nand_bus_width - Get nand bus witdh for given device_node * @np: Pointer to the given device_node * diff --git a/include/of_mtd.h b/include/of_mtd.h index a5a8f20daf..9f5b8a2796 100644 --- a/include/of_mtd.h +++ b/include/of_mtd.h @@ -12,6 +12,8 @@ #include <of.h> int of_get_nand_ecc_mode(struct device_node *np); +int of_get_nand_ecc_step_size(struct device_node *np); +int of_get_nand_ecc_strength(struct device_node *np); int of_get_nand_bus_width(struct device_node *np); bool of_get_nand_on_flash_bbt(struct device_node *np); |