| 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
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| 2 | /* |
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| 3 | * linux/drivers/char/watchdog/omap_wdt.h |
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| 4 | * |
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| 5 | * BRIEF MODULE DESCRIPTION |
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| 6 | * OMAP Watchdog timer register definitions |
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| 7 | * |
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| 8 | * Copyright (C) 2004 Texas Instruments. |
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| 9 | */ |
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| 10 | |
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| 11 | #ifndef _OMAP_WATCHDOG_H |
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| 12 | #define _OMAP_WATCHDOG_H |
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| 13 | |
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| 14 | #define OMAP_WATCHDOG_REV (0x00) |
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| 15 | #define OMAP_WATCHDOG_SYS_CONFIG (0x10) |
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| 16 | #define OMAP_WATCHDOG_STATUS (0x14) |
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| 17 | #define OMAP_WATCHDOG_CNTRL (0x24) |
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| 18 | #define OMAP_WATCHDOG_CRR (0x28) |
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| 19 | #define OMAP_WATCHDOG_LDR (0x2c) |
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| 20 | #define OMAP_WATCHDOG_TGR (0x30) |
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| 21 | #define OMAP_WATCHDOG_WPS (0x34) |
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| 22 | #define OMAP_WATCHDOG_SPR (0x48) |
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| 23 | |
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| 24 | /* Using the prescaler, the OMAP watchdog could go for many |
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| 25 | * months before firing. These limits work without scaling, |
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| 26 | * with the 60 second default assumed by most tools and docs. |
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| 27 | */ |
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| 28 | #define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */ |
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| 29 | #define TIMER_MARGIN_DEFAULT 60 /* 60 secs */ |
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| 30 | #define TIMER_MARGIN_MIN 1 |
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| 31 | |
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| 32 | #define PTV 0 /* prescale */ |
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| 33 | #define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1) |
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| 34 | #define GET_WCCR_SECS(val) ((0xffffffff - (val) + 1) / (32768/(1<<PTV))) |
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| 35 | |
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| 36 | #endif /* _OMAP_WATCHDOG_H */ |
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| 37 | |
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