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Komal Shah7768a132006-09-29 01:59:18 -07001/*
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
Felipe Balbi28171422008-09-20 04:14:01 +030033#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)
Komal Shah7768a132006-09-29 01:59:18 -070042
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 */
Wim Van Sebroeck5f3b2752011-02-23 20:04:38 +000047#define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */
Komal Shah7768a132006-09-29 01:59:18 -070048#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)
Lars Poeschel452fafe2015-06-17 10:58:59 +020053#define GET_WCCR_SECS(val) ((0xffffffff - (val) + 1) / (32768/(1<<PTV)))
Komal Shah7768a132006-09-29 01:59:18 -070054
55#endif /* _OMAP_WATCHDOG_H */