linux/drivers/watchdog/at91sam9_wdt.h
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   1/*
   2 * drivers/watchdog/at91sam9_wdt.h
   3 *
   4 * Copyright (C) 2007 Andrew Victor
   5 * Copyright (C) 2007 Atmel Corporation.
   6 *
   7 * Watchdog Timer (WDT) - System peripherals regsters.
   8 * Based on AT91SAM9261 datasheet revision D.
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14 */
  15
  16#ifndef AT91_WDT_H
  17#define AT91_WDT_H
  18
  19#define AT91_WDT_CR             0x00                    /* Watchdog Control Register */
  20#define         AT91_WDT_WDRSTT         (1    << 0)             /* Restart */
  21#define         AT91_WDT_KEY            (0xa5 << 24)            /* KEY Password */
  22
  23#define AT91_WDT_MR             0x04                    /* Watchdog Mode Register */
  24#define         AT91_WDT_WDV            (0xfff << 0)            /* Counter Value */
  25#define         AT91_WDT_WDFIEN         (1     << 12)           /* Fault Interrupt Enable */
  26#define         AT91_WDT_WDRSTEN        (1     << 13)           /* Reset Processor */
  27#define         AT91_WDT_WDRPROC        (1     << 14)           /* Timer Restart */
  28#define         AT91_WDT_WDDIS          (1     << 15)           /* Watchdog Disable */
  29#define         AT91_WDT_WDD            (0xfff << 16)           /* Delta Value */
  30#define         AT91_WDT_WDDBGHLT       (1     << 28)           /* Debug Halt */
  31#define         AT91_WDT_WDIDLEHLT      (1     << 29)           /* Idle Halt */
  32
  33#define AT91_WDT_SR             0x08                    /* Watchdog Status Register */
  34#define         AT91_WDT_WDUNF          (1 << 0)                /* Watchdog Underflow */
  35#define         AT91_WDT_WDERR          (1 << 1)                /* Watchdog Error */
  36
  37#endif
  38
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