Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-15 09:27:35 +00:00
Code Issues Projects Releases Packages Wiki Activity

Merge branch 'master' of git://git.denx.de/u-boot-pxa

Browse source
This commit is contained in:
Wolfgang Denk 2009-03-15 22:08:07 +01:00
commit cd309029f2
1 changed files with 21 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
cpu/pxa/interrupts.c
View file

@ -28,6 +28,7 @@
#include <common.h>
#include <asm/arch/pxa-regs.h>
#include <div64.h>
#ifdef CONFIG_USE_IRQ
#error: interrupts not implemented yet
@ -41,6 +42,20 @@
#error "Timer frequency unknown - please config PXA CPU type"
#endif
static inline unsigned long long tick_to_time(unsigned long long tick)
{
tick *= CONFIG_SYS_HZ;
do_div(tick, TIMER_FREQ_HZ);
return tick;
}
static inline unsigned long long us_to_tick(unsigned long long us)
{
us = us * TIMER_FREQ_HZ + 999999;
do_div(us, 1000000);
return us;
}
int interrupt_init (void)
{
/* nothing happens here - we don't setup any IRQs */
@ -75,33 +90,20 @@ void reset_timer_masked (void)
ulong get_timer_masked (void)
{
unsigned long long ticks = get_ticks();
return (((ticks / TIMER_FREQ_HZ) * 1000) +
((ticks % TIMER_FREQ_HZ) * 1000) / TIMER_FREQ_HZ);
return tick_to_time(get_ticks());
}
void udelay_masked (unsigned long usec)
{
unsigned long long tmp;
ulong tmo;
ulong endtime;
signed long diff;
if (usec >= 1000) {
tmo = usec / 1000;
tmo *= TIMER_FREQ_HZ;
tmo /= 1000;
} else {
tmo = usec * TIMER_FREQ_HZ;
tmo /= (1000*1000);
}
tmo = us_to_tick(usec);
tmp = get_ticks() + tmo; /* get current timestamp */
endtime = get_ticks() + tmo;
while (get_ticks() < tmp) /* loop till event */
/*NOP*/;
do {
ulong now = get_ticks();
diff = endtime - now;
} while (diff >= 0);
}
/*