at91_rtt.h

Go to the documentation of this file.

/*
 * arch/arm/mach-at91/include/mach/at91_rtt.h
 *
 * Copyright (C) 2007 Andrew Victor
 * Copyright (C) 2007 Atmel Corporation.
 *
 * Real-time Timer (RTT) - System peripherals regsters.
 * Based on AT91SAM9261 datasheet revision D.
 *
 * 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 AT91_RTT_H
#define AT91_RTT_H

#define AT91_RTT_MR     0x00            /* Real-time Mode Register */
#define     AT91_RTT_RTPRES     (0xffff << 0)       /* Real-time Timer Prescaler Value */
#define     AT91_RTT_ALMIEN     (1 << 16)       /* Alarm Interrupt Enable */
#define     AT91_RTT_RTTINCIEN  (1 << 17)       /* Real Time Timer Increment Interrupt Enable */
#define     AT91_RTT_RTTRST     (1 << 18)       /* Real Time Timer Restart */

#define AT91_RTT_AR     0x04            /* Real-time Alarm Register */
#define     AT91_RTT_ALMV       (0xffffffff)        /* Alarm Value */

#define AT91_RTT_VR     0x08            /* Real-time Value Register */
#define     AT91_RTT_CRTV       (0xffffffff)        /* Current Real-time Value */

#define AT91_RTT_SR     0x0c            /* Real-time Status Register */
#define     AT91_RTT_ALMS       (1 << 0)        /* Real-time Alarm Status */
#define     AT91_RTT_RTTINC     (1 << 1)        /* Real-time Timer Increment */

#endif