summaryrefslogtreecommitdiff
path: root/arch/sparc64/kernel/time.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64/kernel/time.c')
-rw-r--r--arch/sparc64/kernel/time.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index a31a0439244f..62e316ab1339 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -849,9 +849,6 @@ static unsigned long sparc64_init_timers(void)
{
struct device_node *dp;
unsigned long clock;
-#ifdef CONFIG_SMP
- extern void smp_tick_init(void);
-#endif
dp = of_find_node_by_path("/");
if (tlb_type == spitfire) {
@@ -874,10 +871,6 @@ static unsigned long sparc64_init_timers(void)
clock = of_getintprop_default(dp, "stick-frequency", 0);
}
-#ifdef CONFIG_SMP
- smp_tick_init();
-#endif
-
return clock;
}
@@ -1038,10 +1031,31 @@ static void __init setup_clockevent_multiplier(unsigned long hz)
sparc64_clockevent.mult = mult;
}
+static unsigned long tb_ticks_per_usec __read_mostly;
+
+void __delay(unsigned long loops)
+{
+ unsigned long bclock, now;
+
+ bclock = tick_ops->get_tick();
+ do {
+ now = tick_ops->get_tick();
+ } while ((now-bclock) < loops);
+}
+EXPORT_SYMBOL(__delay);
+
+void udelay(unsigned long usecs)
+{
+ __delay(tb_ticks_per_usec * usecs);
+}
+EXPORT_SYMBOL(udelay);
+
void __init time_init(void)
{
unsigned long clock = sparc64_init_timers();
+ tb_ticks_per_usec = clock / USEC_PER_SEC;
+
timer_ticks_per_nsec_quotient =
clocksource_hz2mult(clock, SPARC64_NSEC_PER_CYC_SHIFT);