1 /*
2  * JZ4780 BCH controller
3  *
4  * Copyright (c) 2015 Imagination Technologies
5  * Author: Alex Smith <alex.smith@imgtec.com>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published
9  * by the Free Software Foundation.
10  */
11 
12 #ifndef __DRIVERS_MTD_NAND_JZ4780_BCH_H__
13 #define __DRIVERS_MTD_NAND_JZ4780_BCH_H__
14 
15 #include <linux/types.h>
16 
17 struct device;
18 struct device_node;
19 struct jz4780_bch;
20 
21 /**
22  * struct jz4780_bch_params - BCH parameters
23  * @size: data bytes per ECC step.
24  * @bytes: ECC bytes per step.
25  * @strength: number of correctable bits per ECC step.
26  */
27 struct jz4780_bch_params {
28 	int size;
29 	int bytes;
30 	int strength;
31 };
32 
33 int jz4780_bch_calculate(struct jz4780_bch *bch,
34 				struct jz4780_bch_params *params,
35 				const u8 *buf, u8 *ecc_code);
36 int jz4780_bch_correct(struct jz4780_bch *bch,
37 			      struct jz4780_bch_params *params, u8 *buf,
38 			      u8 *ecc_code);
39 
40 void jz4780_bch_release(struct jz4780_bch *bch);
41 struct jz4780_bch *of_jz4780_bch_get(struct device_node *np);
42 
43 #endif /* __DRIVERS_MTD_NAND_JZ4780_BCH_H__ */
44