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 #define GET_WCCR_SECS(val) ((0xffffffff - (val) + 1) / (32768/(1<<PTV))) 54 55 #endif /* _OMAP_WATCHDOG_H */ 56