arch/arm/mach-at91/include/mach/at91_pit.h

   1 /*
   2  * arch/arm/mach-at91/include/mach/at91_pit.h
   3  *
   4  * Copyright (C) 2007 Andrew Victor
   5  * Copyright (C) 2007 Atmel Corporation.
   6  *
   7  * Periodic Interval Timer (PIT) - 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_PIT_H
  17 #define AT91_PIT_H
  18
  19 #define AT91_PIT_MR             0x00                    /* Mode Register */
  20 #define         AT91_PIT_PITIEN         (1 << 25)               /* Timer Interrupt Enable */
  21 #define         AT91_PIT_PITEN          (1 << 24)               /* Timer Enabled */
  22 #define         AT91_PIT_PIV            (0xfffff)               /* Periodic Interval Value */
  23
  24 #define AT91_PIT_SR             0x04                    /* Status Register */
  25 #define         AT91_PIT_PITS           (1 << 0)                /* Timer Status */
  26
  27 #define AT91_PIT_PIVR           0x08                    /* Periodic Interval Value Register */
  28 #define AT91_PIT_PIIR           0x0c                    /* Periodic Interval Image Register */
  29 #define         AT91_PIT_PICNT          (0xfff << 20)           /* Interval Counter */
  30 #define         AT91_PIT_CPIV           (0xfffff)               /* Inverval Value */
  31
  32 #endif