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Commit 1aa15f4e authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Nicolas Ferre
Browse files

mfd: syscon: Add atmel system timer registers definition 



AT91RM920 has a memory range reserved for timer and watchdog configuration.
Expose those registers so that drivers can make use of the system timer syscon
declared in at91 DTs.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
parent b595809b

include/linux/mfd/syscon/atmel-st.h

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Original line number Diff line number Diff line 
/*

 * Copyright (C) 2005 Ivan Kokshaysky

 * Copyright (C) SAN People

 *

 * System Timer (ST) - System peripherals registers.

 * Based on AT91RM9200 datasheet revision E.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#ifndef _LINUX_MFD_SYSCON_ATMEL_ST_H

#define _LINUX_MFD_SYSCON_ATMEL_ST_H



#include <linux/bitops.h>



#define AT91_ST_CR	0x00	/* Control Register */

#define		AT91_ST_WDRST	BIT(0)	/* Watchdog Timer Restart */



#define AT91_ST_PIMR	0x04	/* Period Interval Mode Register */

#define		AT91_ST_PIV	0xffff	/* Period Interval Value */



#define AT91_ST_WDMR	0x08	/* Watchdog Mode Register */

#define		AT91_ST_WDV	0xffff	/* Watchdog Counter Value */

#define		AT91_ST_RSTEN	BIT(16)	/* Reset Enable */

#define		AT91_ST_EXTEN	BIT(17)	/* External Signal Assertion Enable */



#define AT91_ST_RTMR	0x0c	/* Real-time Mode Register */

#define		AT91_ST_RTPRES	0xffff	/* Real-time Prescalar Value */



#define AT91_ST_SR	0x10	/* Status Register */

#define		AT91_ST_PITS	BIT(0)	/* Period Interval Timer Status */

#define		AT91_ST_WDOVF	BIT(1)	/* Watchdog Overflow */

#define		AT91_ST_RTTINC	BIT(2)	/* Real-time Timer Increment */

#define		AT91_ST_ALMS	BIT(3)	/* Alarm Status */



#define AT91_ST_IER	0x14	/* Interrupt Enable Register */

#define AT91_ST_IDR	0x18	/* Interrupt Disable Register */

#define AT91_ST_IMR	0x1c	/* Interrupt Mask Register */



#define AT91_ST_RTAR	0x20	/* Real-time Alarm Register */

#define		AT91_ST_ALMV	0xfffff	/* Alarm Value */



#define AT91_ST_CRTR	0x24	/* Current Real-time Register */

#define		AT91_ST_CRTV	0xfffff	/* Current Real-Time Value */



#endif /* _LINUX_MFD_SYSCON_ATMEL_ST_H */