linux/include/asm-h8300/timer.h
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   1#ifndef __H8300_TIMER_H
   2#define __H8300_TIMER_H
   3
   4void h8300_timer_tick(void);
   5void h8300_timer_setup(void);
   6void h8300_gettod(unsigned int *year, unsigned int *mon, unsigned int *day,
   7                   unsigned int *hour, unsigned int *min, unsigned int *sec);
   8
   9#define TIMER_FREQ (CONFIG_CPU_CLOCK*10000) /* Timer input freq. */
  10
  11#define calc_param(cnt, div, rate, limit)                       \
  12do {                                                            \
  13        cnt = TIMER_FREQ / HZ;                                  \
  14        for (div = 0; div < ARRAY_SIZE(divide_rate); div++) {   \
  15                if (rate[div] == 0)                             \
  16                        continue;                               \
  17                if ((cnt / rate[div]) > limit)                  \
  18                        break;                                  \
  19        }                                                       \
  20        if (div == ARRAY_SIZE(divide_rate))                     \
  21                panic("Timer counter overflow");                \
  22        cnt /= divide_rate[div];                                \
  23} while(0)
  24
  25#endif
  26