/* The counter may wrap */
void udelay (unsigned long usec)
{
u64 target, elapsed;
u32 last_count = get_timer_raw(); /* get current timestamp */
u32 now;
u32 remainder;
/* Convert usecs to timer frequency */
target = (u64)usec * (u64)CONFIG_SYS_HZ_CLOCK;
// Use the kernel macro to avoid errors
// __udivdi3 is NOT available
// target /= (1000000L);
// target /= div_clock;
remainder = do_div(target, (u32)1000000);
remainder = do_div(target, div_clock);
if(target){
elapsed = 0;
now = last_count = get_timer_raw();
while (elapsed < target){
if(now > last_count) {
/* Must have wrapped */
elapsed += last_count + TIMER_LOAD_VAL + 1 - now;
} else {
elapsed += last_count - now;
}
last_count = now;
now = get_timer_raw();
}
} /* else usec too small.... */
}
void udelay_masked(unsigned long usec)
{
u32 tmo;
u32 endtime;
signed long diff;
tmo = CONFIG_SYS_HZ_CLOCK / 1000;
tmo *= usec;
tmo /= 1000;
endtime = get_timer_raw() + tmo;
do {
u32 now = get_timer_raw();
diff = endtime - now;
} while (diff >= 0);
}
void udelay(unsigned long usec)
{
ulong tmo;
ulong endtime;
signed long diff;
tmo = CONFIG_SYS_HZ_CLOCK / 1000;
tmo *= usec;
tmo /= (1000 * TIM_CLK_DIV);
endtime = get_timer_raw() + tmo;
do {
ulong now = get_timer_raw();
diff = endtime - now;
} while (diff >= 0);
}
void udelay_masked(unsigned long usec)
{
ulong tmo;
ulong endtime;
signed long diff;
tmo = CFG_HZ_CLOCK / 1000;
tmo *= usec;
tmo /= 1000;
endtime = get_timer_raw() + tmo;
do {
ulong now = get_timer_raw();
diff = endtime - now;
} while (diff >= 0);
}
void udelay_masked (unsigned long usec)
{
ulong tmo;
#if 0 /* doesn't work for usec < 1000 */
tmo = usec / 1000;
tmo *= CFG_HZ_CLOCK;
#else
tmo = CFG_HZ_CLOCK / 1000;
tmo *= usec;
#endif
tmo /= 1000;
reset_timer_masked ();
while (get_timer_raw () < tmo)
/*NOP*/;
}
ulong get_timer_masked(void)
{
return get_timer_raw()/TIMER_LOAD_VAL;
}
ulong get_timer_masked(void)
{
return TICKS_TO_USEC(get_timer_raw());
}
ulong get_timer(ulong base)
{
return((get_timer_raw() / (TIMER_LOAD_VAL / TIM_CLK_DIV)) - base);
}
ulong get_timer_masked(void)
{
return(get_timer_raw() / DIV(TIMER_LOAD_VAL));
}