arch/h8300/include/asm/timer.h

   1 #ifndef __H8300_TIMER_H
   2 #define __H8300_TIMER_H
   3
   4 void h8300_timer_tick(void);
   5 void h8300_timer_setup(void);
   6 void 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)                       \
  12 do {                                                            \
  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