drivers/mtd/nand/jz4780_bch.h

   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__ */