diff options
Diffstat (limited to 'include/linux/mtd/nand-ecc-sw-bch.h')
-rw-r--r-- | include/linux/mtd/nand-ecc-sw-bch.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/linux/mtd/nand-ecc-sw-bch.h b/include/linux/mtd/nand-ecc-sw-bch.h new file mode 100644 index 000000000000..1e1ee3af82b1 --- /dev/null +++ b/include/linux/mtd/nand-ecc-sw-bch.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright © 2011 Ivan Djelic <ivan.djelic@parrot.com> + * + * This file is the header for the NAND BCH ECC implementation. + */ + +#ifndef __MTD_NAND_ECC_SW_BCH_H__ +#define __MTD_NAND_ECC_SW_BCH_H__ + +struct mtd_info; +struct nand_chip; +struct nand_bch_control; + +#if IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_BCH) + +static inline int mtd_nand_has_bch(void) { return 1; } + +/* + * Calculate BCH ecc code + */ +int nand_bch_calculate_ecc(struct nand_chip *chip, const u_char *dat, + u_char *ecc_code); + +/* + * Detect and correct bit errors + */ +int nand_bch_correct_data(struct nand_chip *chip, u_char *dat, + u_char *read_ecc, u_char *calc_ecc); +/* + * Initialize BCH encoder/decoder + */ +struct nand_bch_control *nand_bch_init(struct mtd_info *mtd); +/* + * Release BCH encoder/decoder resources + */ +void nand_bch_free(struct nand_bch_control *nbc); + +#else /* !CONFIG_MTD_NAND_ECC_SW_BCH */ + +static inline int mtd_nand_has_bch(void) { return 0; } + +static inline int +nand_bch_calculate_ecc(struct nand_chip *chip, const u_char *dat, + u_char *ecc_code) +{ + return -1; +} + +static inline int +nand_bch_correct_data(struct nand_chip *chip, unsigned char *buf, + unsigned char *read_ecc, unsigned char *calc_ecc) +{ + return -ENOTSUPP; +} + +static inline struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) +{ + return NULL; +} + +static inline void nand_bch_free(struct nand_bch_control *nbc) {} + +#endif /* CONFIG_MTD_NAND_ECC_SW_BCH */ + +#endif /* __MTD_NAND_ECC_SW_BCH_H__ */ |