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https://github.com/torvalds/linux
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Tip revision: d683b96b072dc4680fc74964eca77e6a23d1fa6e authored by Linus Torvalds on 02 June 2013, 08:11:17 UTC
Linux 3.10-rc4
Tip revision: d683b96
timer.h
#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
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