/* SPDX-License-Identifier: GPL-2.0+ */
/*
 *  linux/drivers/char/watchdog/omap_wdt.h
 *
 *  BRIEF MODULE DESCRIPTION
 *      OMAP Watchdog timer register definitions
 *
 *  Copyright (C) 2004 Texas Instruments.
 */

#ifndef _OMAP_WATCHDOG_H
#define _OMAP_WATCHDOG_H

#define OMAP_WATCHDOG_REV               (0x00)
#define OMAP_WATCHDOG_SYS_CONFIG        (0x10)
#define OMAP_WATCHDOG_STATUS            (0x14)
#define OMAP_WATCHDOG_CNTRL             (0x24)
#define OMAP_WATCHDOG_CRR               (0x28)
#define OMAP_WATCHDOG_LDR               (0x2c)
#define OMAP_WATCHDOG_TGR               (0x30)
#define OMAP_WATCHDOG_WPS               (0x34)
#define OMAP_WATCHDOG_SPR               (0x48)

/* Using the prescaler, the OMAP watchdog could go for many
 * months before firing.  These limits work without scaling,
 * with the 60 second default assumed by most tools and docs.
 */
#define TIMER_MARGIN_MAX        (24 * 60 * 60)  /* 1 day */
#define TIMER_MARGIN_DEFAULT    60      /* 60 secs */
#define TIMER_MARGIN_MIN        1

#define PTV                     0       /* prescale */
#define GET_WLDR_VAL(secs)      (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1)
#define GET_WCCR_SECS(val)      ((0xffffffff - (val) + 1) / (32768/(1<<PTV)))

#endif                          /* _OMAP_WATCHDOG_H */