/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* BCH Error Location Module
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
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*/
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#ifndef __ELM_H
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#define __ELM_H
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enum bch_ecc {
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BCH4_ECC = 0,
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BCH8_ECC,
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BCH16_ECC,
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};
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/* ELM support 8 error syndrome process */
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#define ERROR_VECTOR_MAX 8
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/**
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* struct elm_errorvec - error vector for elm
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* @error_reported: set true for vectors error is reported
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* @error_uncorrectable: number of uncorrectable errors
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* @error_count: number of correctable errors in the sector
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* @error_loc: buffer for error location
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*
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*/
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struct elm_errorvec {
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bool error_reported;
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bool error_uncorrectable;
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int error_count;
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int error_loc[16];
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};
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#if IS_ENABLED(CONFIG_MTD_NAND_OMAP_BCH)
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void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
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struct elm_errorvec *err_vec);
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int elm_config(struct device *dev, enum bch_ecc bch_type,
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int ecc_steps, int ecc_step_size, int ecc_syndrome_size);
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#else
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static inline void
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elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
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struct elm_errorvec *err_vec)
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{
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}
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static inline int elm_config(struct device *dev, enum bch_ecc bch_type,
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int ecc_steps, int ecc_step_size,
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int ecc_syndrome_size)
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{
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return -ENOSYS;
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}
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#endif /* CONFIG_MTD_NAND_OMAP_BCH */
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#endif /* __ELM_H */
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