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kernel_samsung_sm7125/arch/ia64/sn/kernel/sn2/timer.c

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/*
* linux/arch/ia64/sn/kernel/sn2/timer.c
*
* Copyright (C) 2003 Silicon Graphics, Inc.
* Copyright (C) 2003 Hewlett-Packard Co
* David Mosberger <davidm@hpl.hp.com>: updated for new timer-interpolation infrastructure
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/interrupt.h>
#include <asm/hw_irq.h>
#include <asm/system.h>
#include <asm/sn/leds.h>
#include <asm/sn/shub_mmr.h>
#include <asm/sn/clksupport.h>
extern unsigned long sn_rtc_cycles_per_second;
static struct time_interpolator sn2_interpolator = {
.drift = -1,
.shift = 10,
.mask = (1LL << 55) - 1,
.source = TIME_SOURCE_MMIO64
};
void __init sn_timer_init(void)
{
sn2_interpolator.frequency = sn_rtc_cycles_per_second;
sn2_interpolator.addr = RTC_COUNTER_ADDR;
register_time_interpolator(&sn2_interpolator);
}