69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* omap_wdt.h
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*
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* OMAP Watchdog header file
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*
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* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
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*/
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#ifndef __OMAP_WDT_H__
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#define __OMAP_WDT_H__
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#ifndef __ASSEMBLY__
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#include <linux/bitops.h>
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#endif
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/*
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* Watchdog:
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* Using the prescaler, the OMAP watchdog could go for many
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* months before firing. These limits work without scaling,
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* with the 60 second default assumed by most tools and docs.
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*/
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#define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */
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#define TIMER_MARGIN_DEFAULT 60 /* 60 secs */
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#define TIMER_MARGIN_MIN 1
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#define PTV 0 /* prescale */
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#define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1)
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#define WDT_WWPS_PEND_WCLR BIT(0)
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#define WDT_WWPS_PEND_WLDR BIT(2)
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#define WDT_WWPS_PEND_WTGR BIT(3)
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#define WDT_WWPS_PEND_WSPR BIT(4)
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#define WDT_WCLR_PRE BIT(5)
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#define WDT_WCLR_PTV_OFF 2
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/* Watchdog timer registers */
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struct wd_timer {
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unsigned int resv1[4];
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unsigned int wdtwdsc; /* offset 0x010 */
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unsigned int wdtwdst; /* offset 0x014 */
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unsigned int wdtwisr; /* offset 0x018 */
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unsigned int wdtwier; /* offset 0x01C */
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unsigned int wdtwwer; /* offset 0x020 */
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unsigned int wdtwclr; /* offset 0x024 */
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unsigned int wdtwcrr; /* offset 0x028 */
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unsigned int wdtwldr; /* offset 0x02C */
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unsigned int wdtwtgr; /* offset 0x030 */
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unsigned int wdtwwps; /* offset 0x034 */
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unsigned int resv2[3];
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unsigned int wdtwdly; /* offset 0x044 */
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unsigned int wdtwspr; /* offset 0x048 */
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unsigned int resv3[1];
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unsigned int wdtwqeoi; /* offset 0x050 */
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unsigned int wdtwqstar; /* offset 0x054 */
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unsigned int wdtwqsta; /* offset 0x058 */
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unsigned int wdtwqens; /* offset 0x05C */
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unsigned int wdtwqenc; /* offset 0x060 */
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unsigned int resv4[39];
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unsigned int wdt_unfr; /* offset 0x100 */
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};
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struct omap3_wdt_priv {
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struct wd_timer *regs;
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unsigned int wdt_trgr_pattern;
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};
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#endif /* __OMAP_WDT_H__ */
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