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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 | ||
2817142f FB |
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) | |
7768a13c KS |
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 | */ | |
5f3b2756 | 47 | #define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */ |
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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) | |
452fafed | 53 | #define GET_WCCR_SECS(val) ((0xffffffff - (val) + 1) / (32768/(1<<PTV))) |
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54 | |
55 | #endif /* _OMAP_WATCHDOG_H */ |