linux/drivers/watchdog/at91sam9_wdt.h
Eugen Hristev bb44aa09e5 watchdog: sama5d4_wdt: addition of sam9x60 compatible watchdog
Add support for SAM9X60 WDT into sama5d4_wdt.
This means that this driver gets a flag inside the data struct
that represents the sam9x60 support.
This flag differentiates between the two hardware blocks, and is set
according to the compatible of the driver instantiation.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1574067012-18559-3-git-send-email-eugen.hristev@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2020-01-27 15:55:44 +01:00

62 lines
2.1 KiB
C

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