1*932394acSWolfgang Denk /* 2*932394acSWolfgang Denk * drivers/mtd/nand_ecc.h 3*932394acSWolfgang Denk * 4*932394acSWolfgang Denk * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) 5*932394acSWolfgang Denk * 6*932394acSWolfgang Denk * $Id: nand_ecc.h,v 1.4 2004/06/17 02:35:02 dbrown Exp $ 7*932394acSWolfgang Denk * 8*932394acSWolfgang Denk * This program is free software; you can redistribute it and/or modify 9*932394acSWolfgang Denk * it under the terms of the GNU General Public License version 2 as 10*932394acSWolfgang Denk * published by the Free Software Foundation. 11*932394acSWolfgang Denk * 12*932394acSWolfgang Denk * This file is the header for the ECC algorithm. 13*932394acSWolfgang Denk */ 14*932394acSWolfgang Denk 15*932394acSWolfgang Denk #ifndef __MTD_NAND_ECC_H__ 16*932394acSWolfgang Denk #define __MTD_NAND_ECC_H__ 17*932394acSWolfgang Denk 18*932394acSWolfgang Denk struct mtd_info; 19*932394acSWolfgang Denk 20*932394acSWolfgang Denk /* 21*932394acSWolfgang Denk * Calculate 3 byte ECC code for 256 byte block 22*932394acSWolfgang Denk */ 23*932394acSWolfgang Denk int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code); 24*932394acSWolfgang Denk 25*932394acSWolfgang Denk /* 26*932394acSWolfgang Denk * Detect and correct a 1 bit error for 256 byte block 27*932394acSWolfgang Denk */ 28*932394acSWolfgang Denk int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc); 29*932394acSWolfgang Denk 30*932394acSWolfgang Denk #endif /* __MTD_NAND_ECC_H__ */ 31