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mfd: syscon: Add atmel system timer registers definition

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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: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Alexandre Belloni 2015-03-12 13:07:26 +01:00 committed by Nicolas Ferre
parent b595809b98
commit 1aa15f4e00
1 changed files with 49 additions and 0 deletions
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49
include/linux/mfd/syscon/atmel-st.h Normal file
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/*
* 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 */