| Komal Shah | 7768a13 | 2006-09-29 01:59:18 -0700 | [diff] [blame] | 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 OMAP1610_WATCHDOG_BASE 0xfffeb000 |
| 34 | #define OMAP2420_WATCHDOG_BASE 0x48022000 /*WDT Timer 2 */ |
| 35 | |
| 36 | #ifdef CONFIG_ARCH_OMAP24XX |
| 37 | #define OMAP_WATCHDOG_BASE OMAP2420_WATCHDOG_BASE |
| 38 | #else |
| 39 | #define OMAP_WATCHDOG_BASE OMAP1610_WATCHDOG_BASE |
| 40 | #define RM_RSTST_WKUP 0 |
| 41 | #endif |
| 42 | |
| 43 | #define OMAP_WATCHDOG_REV (OMAP_WATCHDOG_BASE + 0x00) |
| 44 | #define OMAP_WATCHDOG_SYS_CONFIG (OMAP_WATCHDOG_BASE + 0x10) |
| 45 | #define OMAP_WATCHDOG_STATUS (OMAP_WATCHDOG_BASE + 0x14) |
| 46 | #define OMAP_WATCHDOG_CNTRL (OMAP_WATCHDOG_BASE + 0x24) |
| 47 | #define OMAP_WATCHDOG_CRR (OMAP_WATCHDOG_BASE + 0x28) |
| 48 | #define OMAP_WATCHDOG_LDR (OMAP_WATCHDOG_BASE + 0x2c) |
| 49 | #define OMAP_WATCHDOG_TGR (OMAP_WATCHDOG_BASE + 0x30) |
| 50 | #define OMAP_WATCHDOG_WPS (OMAP_WATCHDOG_BASE + 0x34) |
| 51 | #define OMAP_WATCHDOG_SPR (OMAP_WATCHDOG_BASE + 0x48) |
| 52 | |
| 53 | /* Using the prescaler, the OMAP watchdog could go for many |
| 54 | * months before firing. These limits work without scaling, |
| 55 | * with the 60 second default assumed by most tools and docs. |
| 56 | */ |
| 57 | #define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */ |
| 58 | #define TIMER_MARGIN_DEFAULT 60 /* 60 secs */ |
| 59 | #define TIMER_MARGIN_MIN 1 |
| 60 | |
| 61 | #define PTV 0 /* prescale */ |
| 62 | #define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1) |
| 63 | |
| 64 | #endif /* _OMAP_WATCHDOG_H */ |