32 lines
813 B
C
32 lines
813 B
C
#ifndef _ASM_CRIS_ARCH_TIMEX_H
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#define _ASM_CRIS_ARCH_TIMEX_H
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#include <hwregs/reg_map.h>
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#include <hwregs/reg_rdwr.h>
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#include <hwregs/timer_defs.h>
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/*
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* The clock runs at 100MHz, we divide it by 1000000. If you change anything
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* here you must check time.c as well.
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*/
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#define CLOCK_TICK_RATE 100000000 /* Underlying frequency of the HZ timer */
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/* The timer0 values gives 10 ns resolution but interrupts at HZ. */
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#define TIMER0_FREQ (CLOCK_TICK_RATE)
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#define TIMER0_DIV (TIMER0_FREQ/(HZ))
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/* Convert the value in step of 10 ns to 1us without overflow: */
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#define GET_JIFFIES_USEC() \
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((TIMER0_DIV - REG_RD(timer, regi_timer0, r_tmr0_data)) / 100)
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extern unsigned long get_ns_in_jiffie(void);
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static inline unsigned long get_us_in_jiffie_highres(void)
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{
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return get_ns_in_jiffie() / 1000;
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}
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#endif
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