6b13f685e
 김민수
BSP 최초 추가
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/*
* Copyright 2010 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/thread_info.h>
#include <asm/timex.h>
void __udelay(unsigned long usecs)
{
if (usecs > ULONG_MAX / 1000) {
WARN_ON_ONCE(usecs > ULONG_MAX / 1000);
usecs = ULONG_MAX / 1000;
}
__ndelay(usecs * 1000);
}
EXPORT_SYMBOL(__udelay);
void __ndelay(unsigned long nsecs)
{
cycles_t target = get_cycles();
target += ns2cycles(nsecs);
while (get_cycles() < target)
cpu_relax();
}
EXPORT_SYMBOL(__ndelay);
void __delay(unsigned long cycles)
{
cycles_t target = get_cycles() + cycles;
while (get_cycles() < target)
cpu_relax();
}
EXPORT_SYMBOL(__delay);
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