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