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/*
* drivers/mtd/nand_ecc.h
*
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This file is the header for the ECC algorithm.
*/
#ifndef __MTD_NAND_ECC_H__
#define __MTD_NAND_ECC_H__
struct mtd_info;
#if defined(CONFIG_MTD_ECC_SOFT)
static inline int mtd_nand_has_ecc_soft(void) { return 1; }
/*
* Calculate 3 byte ECC code for 256 byte block
*/
int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
/*
* Detect and correct a 1 bit error for 256 byte block
*/
int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
#else
static inline int mtd_nand_has_ecc_soft(void) { return 0; }
static inline int
nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
{
return -1;
}
static inline int
nand_correct_data(struct mtd_info *mtd,
u_char *dat,
u_char *read_ecc,
u_char *calc_ecc)
{
return -1;
}
#endif
#endif /* __MTD_NAND_ECC_H__ */
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