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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 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 */ |