41 lines
701 B
C
41 lines
701 B
C
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/delay.h>
|
|
#include <asm/param.h>
|
|
|
|
void __delay(unsigned long time)
|
|
{
|
|
/* Stolen from the i386 __loop_delay */
|
|
int d0;
|
|
__asm__ __volatile__(
|
|
"\tjmp 1f\n"
|
|
".align 16\n"
|
|
"1:\tjmp 2f\n"
|
|
".align 16\n"
|
|
"2:\tdecl %0\n\tjns 2b"
|
|
:"=&a" (d0)
|
|
:"0" (time));
|
|
}
|
|
|
|
void __udelay(unsigned long usecs)
|
|
{
|
|
int i, n;
|
|
|
|
n = (loops_per_jiffy * HZ * usecs) / MILLION;
|
|
for(i=0;i<n;i++)
|
|
cpu_relax();
|
|
}
|
|
|
|
EXPORT_SYMBOL(__udelay);
|
|
|
|
void __const_udelay(unsigned long usecs)
|
|
{
|
|
int i, n;
|
|
|
|
n = (loops_per_jiffy * HZ * usecs) / MILLION;
|
|
for(i=0;i<n;i++)
|
|
cpu_relax();
|
|
}
|
|
|
|
EXPORT_SYMBOL(__const_udelay);
|