1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *  drivers/mtd/nand_ecc.h
4  *
5  *  Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com>
6  *			    David Woodhouse <dwmw2@infradead.org>
7  *			    Thomas Gleixner <tglx@linutronix.de>
8  *
9  * This file is the header for the ECC algorithm.
10  */
11 
12 #ifndef __MTD_NAND_ECC_H__
13 #define __MTD_NAND_ECC_H__
14 
15 struct mtd_info;
16 
17 /*
18  * Calculate 3 byte ECC code for 256 byte block
19  */
20 int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
21 
22 /*
23  * Detect and correct a 1 bit error for 256 byte block
24  */
25 int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
26 
27 #endif /* __MTD_NAND_ECC_H__ */
28