include/asm-arm/arch-l7200/gp_timers.h

   1 /*
   2  * linux/include/asm-arm/arch-l7200/gp_timers.h
   3  *
   4  * Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
   5  *
   6  * Changelog:
   7  *   07-28-2000 SJH     Created file
   8  *   08-02-2000 SJH     Used structure for registers
   9  */
  10 #ifndef _ASM_ARCH_GPTIMERS_H
  11 #define _ASM_ARCH_GPTIMERS_H
  12
  13 #include <asm/hardware.h>
  14
  15 /*
  16  * Layout of L7200 general purpose timer registers
  17  */
  18 struct GPT_Regs {
  19         unsigned int TIMERLOAD;
  20         unsigned int TIMERVALUE;
  21         unsigned int TIMERCONTROL;
  22         unsigned int TIMERCLEAR;
  23 };
  24
  25 #define GPT_BASE                (IO_BASE_2 + 0x3000)
  26 #define l7200_timer1_regs       ((volatile struct GPT_Regs *) (GPT_BASE))
  27 #define l7200_timer2_regs       ((volatile struct GPT_Regs *) (GPT_BASE + 0x20))
  28
  29 /*
  30  * General register values
  31  */
  32 #define GPT_PRESCALE_1          0x00000000
  33 #define GPT_PRESCALE_16         0x00000004
  34 #define GPT_PRESCALE_256        0x00000008
  35 #define GPT_MODE_FREERUN        0x00000000
  36 #define GPT_MODE_PERIODIC       0x00000040
  37 #define GPT_ENABLE              0x00000080
  38 #define GPT_BZTOG               0x00000100
  39 #define GPT_BZMOD               0x00000200
  40 #define GPT_LOAD_MASK           0x0000ffff
  41
  42 #endif