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Diffstat (limited to 'arch/arm/mach-ixp4xx/common.c')
-rw-r--r--arch/arm/mach-ixp4xx/common.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 0bce09799d18..4dbfcbb9163c 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -35,6 +35,7 @@
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/irq.h>
+#include <asm/sched_clock.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
@@ -399,6 +400,23 @@ void __init ixp4xx_sys_init(void)
}
/*
+ * sched_clock()
+ */
+static DEFINE_CLOCK_DATA(cd);
+
+unsigned long long notrace sched_clock(void)
+{
+ u32 cyc = *IXP4XX_OSTS;
+ return cyc_to_sched_clock(&cd, cyc, (u32)~0);
+}
+
+static void notrace ixp4xx_update_sched_clock(void)
+{
+ u32 cyc = *IXP4XX_OSTS;
+ update_sched_clock(&cd, cyc, (u32)~0);
+}
+
+/*
* clocksource
*/
static cycle_t ixp4xx_get_cycles(struct clocksource *cs)
@@ -411,7 +429,6 @@ static struct clocksource clocksource_ixp4xx = {
.rating = 200,
.read = ixp4xx_get_cycles,
.mask = CLOCKSOURCE_MASK(32),
- .shift = 20,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
@@ -419,21 +436,9 @@ unsigned long ixp4xx_timer_freq = FREQ;
EXPORT_SYMBOL(ixp4xx_timer_freq);
static void __init ixp4xx_clocksource_init(void)
{
- clocksource_ixp4xx.mult =
- clocksource_hz2mult(ixp4xx_timer_freq,
- clocksource_ixp4xx.shift);
- clocksource_register(&clocksource_ixp4xx);
-}
-
-/*
- * sched_clock()
- */
-unsigned long long sched_clock(void)
-{
- cycle_t cyc = ixp4xx_get_cycles(NULL);
- struct clocksource *cs = &clocksource_ixp4xx;
+ init_sched_clock(&cd, ixp4xx_update_sched_clock, 32, ixp4xx_timer_freq);
- return clocksource_cyc2ns(cyc, cs->mult, cs->shift);
+ clocksource_register_hz(&clocksource_ixp4xx, ixp4xx_timer_freq);
}
/*