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name : nand-ecc-mtk.h
 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
 * MTK SDG1 ECC controller
 *
 * Copyright (c) 2016 Mediatek
 * Authors:	Xiaolei Li		<xiaolei.li@mediatek.com>
 *		Jorge Ramirez-Ortiz	<jorge.ramirez-ortiz@linaro.org>
 */

#ifndef __DRIVERS_MTD_NAND_MTK_ECC_H__
#define __DRIVERS_MTD_NAND_MTK_ECC_H__

#include <linux/types.h>

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(struct mtk_ecc *ecc, u32 *p);
unsigned int mtk_ecc_get_parity_bits(struct mtk_ecc *ecc);

struct mtk_ecc *of_mtk_ecc_get(struct device_node *);
void mtk_ecc_release(struct mtk_ecc *);

#endif
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