drivers/mtd/nand/raw/mtk_ecc.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
   2 /*
   3  * MTK SDG1 ECC controller
   4  *
   5  * Copyright (c) 2016 Mediatek
   6  * Authors:     Xiaolei Li              <xiaolei.li@mediatek.com>
   7  *              Jorge Ramirez-Ortiz     <jorge.ramirez-ortiz@linaro.org>
   8  */
   9
  10 #ifndef __DRIVERS_MTD_NAND_MTK_ECC_H__
  11 #define __DRIVERS_MTD_NAND_MTK_ECC_H__
  12
  13 #include <linux/types.h>
  14
  15 enum mtk_ecc_mode {ECC_DMA_MODE = 0, ECC_NFI_MODE = 1};
  16 enum mtk_ecc_operation {ECC_ENCODE, ECC_DECODE};
  17
  18 struct device_node;
  19 struct mtk_ecc;
  20
  21 struct mtk_ecc_stats {
  22         u32 corrected;
  23         u32 bitflips;
  24         u32 failed;
  25 };
  26
  27 struct mtk_ecc_config {
  28         enum mtk_ecc_operation op;
  29         enum mtk_ecc_mode mode;
  30         dma_addr_t addr;
  31         u32 strength;
  32         u32 sectors;
  33         u32 len;
  34 };
  35
  36 int mtk_ecc_encode(struct mtk_ecc *, struct mtk_ecc_config *, u8 *, u32);
  37 void mtk_ecc_get_stats(struct mtk_ecc *, struct mtk_ecc_stats *, int);
  38 int mtk_ecc_wait_done(struct mtk_ecc *, enum mtk_ecc_operation);
  39 int mtk_ecc_enable(struct mtk_ecc *, struct mtk_ecc_config *);
  40 void mtk_ecc_disable(struct mtk_ecc *);
  41 void mtk_ecc_adjust_strength(struct mtk_ecc *ecc, u32 *p);
  42 unsigned int mtk_ecc_get_parity_bits(struct mtk_ecc *ecc);
  43
  44 struct mtk_ecc *of_mtk_ecc_get(struct device_node *);
  45 void mtk_ecc_release(struct mtk_ecc *);
  46
  47 #endif