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Diffstat (limited to 'arch/arm/common/timer-sp.c')
-rw-r--r--arch/arm/common/timer-sp.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/common/timer-sp.c b/arch/arm/common/timer-sp.c
index 8794a34..df13a3f 100644
--- a/arch/arm/common/timer-sp.c
+++ b/arch/arm/common/timer-sp.c
@@ -26,6 +26,7 @@
#include <linux/irq.h>
#include <linux/io.h>
+#include <asm/sched_clock.h>
#include <asm/hardware/arm_timer.h>
static long __init sp804_get_clock_rate(const char *name)
@@ -67,7 +68,16 @@ static long __init sp804_get_clock_rate(const char *name)
return rate;
}
-void __init sp804_clocksource_init(void __iomem *base, const char *name)
+static void __iomem *sched_clock_base;
+
+static u32 sp804_read(void)
+{
+ return ~readl_relaxed(sched_clock_base + TIMER_VALUE);
+}
+
+void __init __sp804_clocksource_and_sched_clock_init(void __iomem *base,
+ const char *name,
+ int use_sched_clock)
{
long rate = sp804_get_clock_rate(name);
@@ -83,6 +93,11 @@ void __init sp804_clocksource_init(void __iomem *base, const char *name)
clocksource_mmio_init(base + TIMER_VALUE, name,
rate, 200, 32, clocksource_mmio_readl_down);
+
+ if (use_sched_clock) {
+ sched_clock_base = base;
+ setup_sched_clock(sp804_read, 32, rate);
+ }
}