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/*

* BCH Error Location Module

*

* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/

*

* This program is free software; you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation; either version 2 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

*/

#ifndef __ELM_H

#define __ELM_H

enum bch_ecc {

BCH4_ECC = 0,

BCH8_ECC,

BCH16_ECC,

};

/* ELM support 8 error syndrome process */

#define ERROR_VECTOR_MAX 8

/**

* struct elm_errorvec - error vector for elm

* @error_reported: set true for vectors error is reported

* @error_uncorrectable: number of uncorrectable errors

* @error_count: number of correctable errors in the sector

* @error_loc: buffer for error location

*

*/

struct elm_errorvec {

bool error_reported;

bool error_uncorrectable;

int error_count;

int error_loc[16];

};

#if IS_ENABLED(CONFIG_MTD_NAND_OMAP_BCH)

void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,

struct elm_errorvec *err_vec);

int elm_config(struct device *dev, enum bch_ecc bch_type,

int ecc_steps, int ecc_step_size, int ecc_syndrome_size);

#else

static inline void

elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,

struct elm_errorvec *err_vec)

{

}

static inline int elm_config(struct device *dev, enum bch_ecc bch_type,

int ecc_steps, int ecc_step_size,

int ecc_syndrome_size)

{

return -ENOSYS;

}

#endif /* CONFIG_MTD_NAND_ECC_BCH */

#endif /* __ELM_H */