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[MIPS] lib_mips/time.c: Replace CP0 access functions with existing macros

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We already have many pre-defined CP0 access macros in <asm/mipsregs.h>.
This patch replaces mips_{compare,count}_set and mips_count_get with
existing macros.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
This commit is contained in:
Shinya Kuribayashi 2008-06-05 22:28:59 +09:00
parent 8155efbd7a
commit c7e38e413a
1 changed files with 8 additions and 27 deletions
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35
lib_mips/time.c
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@ -22,26 +22,7 @@
*/
#include <common.h>
static inline void mips_compare_set(u32 v)
{
asm volatile ("mtc0 %0, $11" : : "r" (v));
}
static inline void mips_count_set(u32 v)
{
asm volatile ("mtc0 %0, $9" : : "r" (v));
}
static inline u32 mips_count_get(void)
{
u32 count;
asm volatile ("mfc0 %0, $9" : "=r" (count) :);
return count;
}
#include <asm/mipsregs.h>
/*
* timer without interrupts
@ -49,25 +30,25 @@ static inline u32 mips_count_get(void)
int timer_init(void)
{
mips_compare_set(0);
mips_count_set(0);
write_c0_compare(0);
write_c0_count(0);
return 0;
}
void reset_timer(void)
{
mips_count_set(0);
write_c0_count(0);
}
ulong get_timer(ulong base)
{
return mips_count_get() - base;
return read_c0_count() - base;
}
void set_timer(ulong t)
{
mips_count_set(t);
write_c0_count(t);
}
void udelay (unsigned long usec)
@ -76,7 +57,7 @@ void udelay (unsigned long usec)
ulong start = get_timer(0);
tmo = usec * (CFG_HZ / 1000000);
while ((ulong)((mips_count_get() - start)) < tmo)
while ((ulong)((read_c0_count() - start)) < tmo)
/*NOP*/;
}
@ -86,7 +67,7 @@ void udelay (unsigned long usec)
*/
unsigned long long get_ticks(void)
{
return mips_count_get();
return read_c0_count();
}
/*