arch/arm/mach-at91/include/mach/at91_rtt.h

   1 /*
   2  * arch/arm/mach-at91/include/mach/at91_rtt.h
   3  *
   4  * Copyright (C) 2007 Andrew Victor
   5  * Copyright (C) 2007 Atmel Corporation.
   6  *
   7  * Real-time Timer (RTT) - System peripherals regsters.
   8  * Based on AT91SAM9261 datasheet revision D.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  */
  15
  16 #ifndef AT91_RTT_H
  17 #define AT91_RTT_H
  18
  19 #define AT91_RTT_MR             0x00                    /* Real-time Mode Register */
  20 #define         AT91_RTT_RTPRES         (0xffff << 0)           /* Real-time Timer Prescaler Value */
  21 #define         AT91_RTT_ALMIEN         (1 << 16)               /* Alarm Interrupt Enable */
  22 #define         AT91_RTT_RTTINCIEN      (1 << 17)               /* Real Time Timer Increment Interrupt Enable */
  23 #define         AT91_RTT_RTTRST         (1 << 18)               /* Real Time Timer Restart */
  24
  25 #define AT91_RTT_AR             0x04                    /* Real-time Alarm Register */
  26 #define         AT91_RTT_ALMV           (0xffffffff)            /* Alarm Value */
  27
  28 #define AT91_RTT_VR             0x08                    /* Real-time Value Register */
  29 #define         AT91_RTT_CRTV           (0xffffffff)            /* Current Real-time Value */
  30
  31 #define AT91_RTT_SR             0x0c                    /* Real-time Status Register */
  32 #define         AT91_RTT_ALMS           (1 << 0)                /* Real-time Alarm Status */
  33 #define         AT91_RTT_RTTINC         (1 << 1)                /* Real-time Timer Increment */
  34
  35 #endif