mcfpit.h

Go to the documentation of this file.

/****************************************************************************/

/*
 *  mcfpit.h -- ColdFire internal PIT timer support defines.
 *
 *  (C) Copyright 2003, Greg Ungerer ([email protected])
 */

/****************************************************************************/
#ifndef mcfpit_h
#define mcfpit_h
/****************************************************************************/

/*
 *  Define the PIT timer register address offsets.
 */
#define MCFPIT_PCSR     0x0     /* PIT control register */
#define MCFPIT_PMR      0x2     /* PIT modulus register */
#define MCFPIT_PCNTR        0x4     /* PIT count register */

/*
 *  Bit definitions for the PIT Control and Status register.
 */
#define MCFPIT_PCSR_CLK1    0x0000      /* System clock divisor */
#define MCFPIT_PCSR_CLK2    0x0100      /* System clock divisor */
#define MCFPIT_PCSR_CLK4    0x0200      /* System clock divisor */
#define MCFPIT_PCSR_CLK8    0x0300      /* System clock divisor */
#define MCFPIT_PCSR_CLK16   0x0400      /* System clock divisor */
#define MCFPIT_PCSR_CLK32   0x0500      /* System clock divisor */
#define MCFPIT_PCSR_CLK64   0x0600      /* System clock divisor */
#define MCFPIT_PCSR_CLK128  0x0700      /* System clock divisor */
#define MCFPIT_PCSR_CLK256  0x0800      /* System clock divisor */
#define MCFPIT_PCSR_CLK512  0x0900      /* System clock divisor */
#define MCFPIT_PCSR_CLK1024 0x0a00      /* System clock divisor */
#define MCFPIT_PCSR_CLK2048 0x0b00      /* System clock divisor */
#define MCFPIT_PCSR_CLK4096 0x0c00      /* System clock divisor */
#define MCFPIT_PCSR_CLK8192 0x0d00      /* System clock divisor */
#define MCFPIT_PCSR_CLK16384    0x0e00      /* System clock divisor */
#define MCFPIT_PCSR_CLK32768    0x0f00      /* System clock divisor */
#define MCFPIT_PCSR_DOZE    0x0040      /* Clock run in doze mode */
#define MCFPIT_PCSR_HALTED  0x0020      /* Clock run in halt mode */
#define MCFPIT_PCSR_OVW     0x0010      /* Overwrite PIT counter now */
#define MCFPIT_PCSR_PIE     0x0008      /* Enable PIT interrupt */
#define MCFPIT_PCSR_PIF     0x0004      /* PIT interrupt flag */
#define MCFPIT_PCSR_RLD     0x0002      /* Reload counter */
#define MCFPIT_PCSR_EN      0x0001      /* Enable PIT */
#define MCFPIT_PCSR_DISABLE 0x0000      /* Disable PIT */

/****************************************************************************/
#endif  /* mcfpit_h */