drivers/mtd/nand/atmel_nand_ecc.h

   1 /*
   2  * Error Corrected Code Controller (ECC) - System peripherals regsters.
   3  * Based on AT91SAM9260 datasheet revision B.
   4  *
   5  * Copyright (C) 2007 Andrew Victor
   6  * Copyright (C) 2007 Atmel Corporation.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  */
  13
  14 #ifndef ATMEL_NAND_ECC_H
  15 #define ATMEL_NAND_ECC_H
  16
  17 #define ATMEL_ECC_CR            0x00                    /* Control register */
  18 #define         ATMEL_ECC_RST           (1 << 0)                /* Reset parity */
  19
  20 #define ATMEL_ECC_MR            0x04                    /* Mode register */
  21 #define         ATMEL_ECC_PAGESIZE      (3 << 0)                /* Page Size */
  22 #define                 ATMEL_ECC_PAGESIZE_528          (0)
  23 #define                 ATMEL_ECC_PAGESIZE_1056         (1)
  24 #define                 ATMEL_ECC_PAGESIZE_2112         (2)
  25 #define                 ATMEL_ECC_PAGESIZE_4224         (3)
  26
  27 #define ATMEL_ECC_SR            0x08                    /* Status register */
  28 #define         ATMEL_ECC_RECERR                (1 << 0)                /* Recoverable Error */
  29 #define         ATMEL_ECC_ECCERR                (1 << 1)                /* ECC Single Bit Error */
  30 #define         ATMEL_ECC_MULERR                (1 << 2)                /* Multiple Errors */
  31
  32 #define ATMEL_ECC_PR            0x0c                    /* Parity register */
  33 #define         ATMEL_ECC_BITADDR       (0xf << 0)              /* Bit Error Address */
  34 #define         ATMEL_ECC_WORDADDR      (0xfff << 4)            /* Word Error Address */
  35
  36 #define ATMEL_ECC_NPR           0x10                    /* NParity register */
  37 #define         ATMEL_ECC_NPARITY       (0xffff << 0)           /* NParity */
  38
  39 #endif