linux/drivers/watchdog/omap_wdt.h
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   1/*
   2 *  linux/drivers/char/watchdog/omap_wdt.h
   3 *
   4 *  BRIEF MODULE DESCRIPTION
   5 *      OMAP Watchdog timer register definitions
   6 *
   7 *  Copyright (C) 2004 Texas Instruments.
   8 *
   9 *  This program is free software; you can redistribute  it and/or modify it
  10 *  under  the terms of  the GNU General  Public License as published by the
  11 *  Free Software Foundation;  either version 2 of the  License, or (at your
  12 *  option) any later version.
  13 *
  14 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  15 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  16 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  17 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  18 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  20 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  21 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  22 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24 *
  25 *  You should have received a copy of the  GNU General Public License along
  26 *  with this program; if not, write  to the Free Software Foundation, Inc.,
  27 *  675 Mass Ave, Cambridge, MA 02139, USA.
  28 */
  29
  30#ifndef _OMAP_WATCHDOG_H
  31#define _OMAP_WATCHDOG_H
  32
  33#define OMAP_WATCHDOG_REV               (0x00)
  34#define OMAP_WATCHDOG_SYS_CONFIG        (0x10)
  35#define OMAP_WATCHDOG_STATUS            (0x14)
  36#define OMAP_WATCHDOG_CNTRL             (0x24)
  37#define OMAP_WATCHDOG_CRR               (0x28)
  38#define OMAP_WATCHDOG_LDR               (0x2c)
  39#define OMAP_WATCHDOG_TGR               (0x30)
  40#define OMAP_WATCHDOG_WPS               (0x34)
  41#define OMAP_WATCHDOG_SPR               (0x48)
  42
  43/* Using the prescaler, the OMAP watchdog could go for many
  44 * months before firing.  These limits work without scaling,
  45 * with the 60 second default assumed by most tools and docs.
  46 */
  47#define TIMER_MARGIN_MAX        (24 * 60 * 60)  /* 1 day */
  48#define TIMER_MARGIN_DEFAULT    60      /* 60 secs */
  49#define TIMER_MARGIN_MIN        1
  50
  51#define PTV                     0       /* prescale */
  52#define GET_WLDR_VAL(secs)      (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1)
  53
  54#endif                          /* _OMAP_WATCHDOG_H */
  55
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