1 /* 2 * MTK SDG1 ECC controller 3 * 4 * Copyright (c) 2016 Mediatek 5 * Authors: Xiaolei Li <xiaolei.li@mediatek.com> 6 * Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> 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_MTK_ECC_H__ 13 #define __DRIVERS_MTD_NAND_MTK_ECC_H__ 14 15 #include <linux/types.h> 16 17 #define ECC_PARITY_BITS (14) 18 19 enum mtk_ecc_mode {ECC_DMA_MODE = 0, ECC_NFI_MODE = 1}; 20 enum mtk_ecc_operation {ECC_ENCODE, ECC_DECODE}; 21 22 struct device_node; 23 struct mtk_ecc; 24 25 struct mtk_ecc_stats { 26 u32 corrected; 27 u32 bitflips; 28 u32 failed; 29 }; 30 31 struct mtk_ecc_config { 32 enum mtk_ecc_operation op; 33 enum mtk_ecc_mode mode; 34 dma_addr_t addr; 35 u32 strength; 36 u32 sectors; 37 u32 len; 38 }; 39 40 int mtk_ecc_encode(struct mtk_ecc *, struct mtk_ecc_config *, u8 *, u32); 41 void mtk_ecc_get_stats(struct mtk_ecc *, struct mtk_ecc_stats *, int); 42 int mtk_ecc_wait_done(struct mtk_ecc *, enum mtk_ecc_operation); 43 int mtk_ecc_enable(struct mtk_ecc *, struct mtk_ecc_config *); 44 void mtk_ecc_disable(struct mtk_ecc *); 45 void mtk_ecc_adjust_strength(u32 *); 46 47 struct mtk_ecc *of_mtk_ecc_get(struct device_node *); 48 void mtk_ecc_release(struct mtk_ecc *); 49 50 #endif 51