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/*
* MTK SDG1 ECC controller
*
* Copyright (c) 2016 Mediatek
* Authors: Xiaolei Li <xiaolei.li@mediatek.com>
* Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#ifndef __DRIVERS_MTD_NAND_MTK_ECC_H__
#define __DRIVERS_MTD_NAND_MTK_ECC_H__
#include <linux/types.h>
#define ECC_PARITY_BITS (14)
enum mtk_ecc_mode {ECC_DMA_MODE = 0, ECC_NFI_MODE = 1};
enum mtk_ecc_operation {ECC_ENCODE, ECC_DECODE};
struct device_node;
struct mtk_ecc;
struct mtk_ecc_stats {
u32 corrected;
u32 bitflips;
u32 failed;
};
struct mtk_ecc_config {
enum mtk_ecc_operation op;
enum mtk_ecc_mode mode;
dma_addr_t addr;
u32 strength;
u32 sectors;
u32 len;
};
int mtk_ecc_encode(struct mtk_ecc *, struct mtk_ecc_config *, u8 *, u32);
void mtk_ecc_get_stats(struct mtk_ecc *, struct mtk_ecc_stats *, int);
int mtk_ecc_wait_done(struct mtk_ecc *, enum mtk_ecc_operation);
int mtk_ecc_enable(struct mtk_ecc *, struct mtk_ecc_config *);
void mtk_ecc_disable(struct mtk_ecc *);
void mtk_ecc_adjust_strength(u32 *);
struct mtk_ecc *of_mtk_ecc_get(struct device_node *);
void mtk_ecc_release(struct mtk_ecc *);
#endif
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