include/asm-arm/arch-cl7500/time.h

   1 /*
   2  * linux/include/asm-arm/arch-cl7500/time.h
   3  *
   4  * Copyright (c) 1996-2000 Russell King.
   5  *
   6  * Changelog:
   7  *  24-Sep-1996 RMK     Created
   8  *  10-Oct-1996 RMK     Brought up to date with arch-sa110eval
   9  *  04-Dec-1997 RMK     Updated for new arch/arm/time.c
  10  */
  11
  12 extern void ioctime_init(void);
  13
  14 static irqreturn_t
  15 timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
  16 {
  17         do_timer(regs);
  18         do_set_rtc();
  19         do_profile(regs);
  20
  21         {
  22                 /* Twinkle the lights. */
  23                 static int count, state = 0xff00;
  24                 if (count-- == 0) {
  25                         state ^= 0x100;
  26                         count = 25;
  27                         *((volatile unsigned int *)LED_ADDRESS) = state;
  28                 }
  29         }
  30         return IRQ_HANDLED;
  31 }
  32
  33 /*
  34  * Set up timer interrupt.
  35  */
  36 void __init time_init(void)
  37 {
  38         ioctime_init();
  39
  40         timer_irq.handler = timer_interrupt;
  41
  42         setup_irq(IRQ_TIMER, &timer_irq);
  43 }