drivers/watchdog/omap_wdt.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  *  linux/drivers/char/watchdog/omap_wdt.h
   4  *
   5  *  BRIEF MODULE DESCRIPTION
   6  *      OMAP Watchdog timer register definitions
   7  *
   8  *  Copyright (C) 2004 Texas Instruments.
   9  */
  10
  11 #ifndef _OMAP_WATCHDOG_H
  12 #define _OMAP_WATCHDOG_H
  13
  14 #define OMAP_WATCHDOG_REV               (0x00)
  15 #define OMAP_WATCHDOG_SYS_CONFIG        (0x10)
  16 #define OMAP_WATCHDOG_STATUS            (0x14)
  17 #define OMAP_WATCHDOG_CNTRL             (0x24)
  18 #define OMAP_WATCHDOG_CRR               (0x28)
  19 #define OMAP_WATCHDOG_LDR               (0x2c)
  20 #define OMAP_WATCHDOG_TGR               (0x30)
  21 #define OMAP_WATCHDOG_WPS               (0x34)
  22 #define OMAP_WATCHDOG_SPR               (0x48)
  23
  24 /* Using the prescaler, the OMAP watchdog could go for many
  25  * months before firing.  These limits work without scaling,
  26  * with the 60 second default assumed by most tools and docs.
  27  */
  28 #define TIMER_MARGIN_MAX        (24 * 60 * 60)  /* 1 day */
  29 #define TIMER_MARGIN_DEFAULT    60      /* 60 secs */
  30 #define TIMER_MARGIN_MIN        1
  31
  32 #define PTV                     0       /* prescale */
  33 #define GET_WLDR_VAL(secs)      (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1)
  34 #define GET_WCCR_SECS(val)      ((0xffffffff - (val) + 1) / (32768/(1<<PTV)))
  35
  36 #endif                          /* _OMAP_WATCHDOG_H */