/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* drivers/watchdog/at91sam9_wdt.h
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*
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* Copyright (C) 2007 Andrew Victor
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* Copyright (C) 2007 Atmel Corporation.
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* Copyright (C) 2019 Microchip Technology Inc. and its subsidiaries
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*
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* Watchdog Timer (WDT) - System peripherals regsters.
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* Based on AT91SAM9261 datasheet revision D.
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* Based on SAM9X60 datasheet.
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*
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*/
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#ifndef AT91_WDT_H
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#define AT91_WDT_H
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#include <linux/bits.h>
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#define AT91_WDT_CR 0x00 /* Watchdog Control Register */
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#define AT91_WDT_WDRSTT BIT(0) /* Restart */
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#define AT91_WDT_KEY (0xa5UL << 24) /* KEY Password */
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#define AT91_WDT_MR 0x04 /* Watchdog Mode Register */
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#define AT91_WDT_WDV (0xfffUL << 0) /* Counter Value */
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#define AT91_WDT_SET_WDV(x) ((x) & AT91_WDT_WDV)
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#define AT91_SAM9X60_PERIODRST BIT(4) /* Period Reset */
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#define AT91_SAM9X60_RPTHRST BIT(5) /* Minimum Restart Period */
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#define AT91_WDT_WDFIEN BIT(12) /* Fault Interrupt Enable */
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#define AT91_SAM9X60_WDDIS BIT(12) /* Watchdog Disable */
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#define AT91_WDT_WDRSTEN BIT(13) /* Reset Processor */
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#define AT91_WDT_WDRPROC BIT(14) /* Timer Restart */
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#define AT91_WDT_WDDIS BIT(15) /* Watchdog Disable */
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#define AT91_WDT_WDD (0xfffUL << 16) /* Delta Value */
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#define AT91_WDT_SET_WDD(x) (((x) << 16) & AT91_WDT_WDD)
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#define AT91_WDT_WDDBGHLT BIT(28) /* Debug Halt */
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#define AT91_WDT_WDIDLEHLT BIT(29) /* Idle Halt */
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#define AT91_WDT_SR 0x08 /* Watchdog Status Register */
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#define AT91_WDT_WDUNF BIT(0) /* Watchdog Underflow */
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#define AT91_WDT_WDERR BIT(1) /* Watchdog Error */
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/* Watchdog Timer Value Register */
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#define AT91_SAM9X60_VR 0x08
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/* Watchdog Window Level Register */
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#define AT91_SAM9X60_WLR 0x0c
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/* Watchdog Period Value */
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#define AT91_SAM9X60_COUNTER (0xfffUL << 0)
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#define AT91_SAM9X60_SET_COUNTER(x) ((x) & AT91_SAM9X60_COUNTER)
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/* Interrupt Enable Register */
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#define AT91_SAM9X60_IER 0x14
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/* Period Interrupt Enable */
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#define AT91_SAM9X60_PERINT BIT(0)
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/* Interrupt Disable Register */
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#define AT91_SAM9X60_IDR 0x18
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/* Interrupt Status Register */
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#define AT91_SAM9X60_ISR 0x1c
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#endif
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