aboutsummaryrefslogtreecommitdiffstats
path: root/arch/h8300/include/asm/timer.h
blob: def80464d38fc07deebd1c361059b1eb2daca5b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
#ifndef __H8300_TIMER_H
#define __H8300_TIMER_H

void h8300_timer_tick(void);
void h8300_timer_setup(void);
void h8300_gettod(unsigned int *year, unsigned int *mon, unsigned int *day,
		   unsigned int *hour, unsigned int *min, unsigned int *sec);

#define TIMER_FREQ (CONFIG_CPU_CLOCK*10000) /* Timer input freq. */

#define calc_param(cnt, div, rate, limit)			\
do {								\
	cnt = TIMER_FREQ / HZ;					\
	for (div = 0; div < ARRAY_SIZE(divide_rate); div++) {	\
		if (rate[div] == 0)				\
			continue;				\
		if ((cnt / rate[div]) > limit)			\
			break;					\
	}							\
	if (div == ARRAY_SIZE(divide_rate))			\
		panic("Timer counter overflow");		\
	cnt /= divide_rate[div];				\
} while(0)

#endif