1 files changed, 39 insertions, 43 deletions

diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index 80702c9ecc7..1dea6cfafb3 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -9,18 +9,22 @@
  *
  */
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/timex.h>
 #include <linux/clockchips.h>
+#include <linux/sched_clock.h>
 
 #include <asm/mach/time.h>
-#include <asm/sched_clock.h>
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 
-static u32 notrace sa1100_read_sched_clock(void)
+#define SA1100_CLOCK_FREQ 3686400
+#define SA1100_LATCH DIV_ROUND_CLOSEST(SA1100_CLOCK_FREQ, HZ)
+
+static u64 notrace sa1100_read_sched_clock(void)
 {
 	return readl_relaxed(OSCR);
 }
@@ -69,46 +73,10 @@ sa1100_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c)
 	}
 }
 
-static struct clock_event_device ckevt_sa1100_osmr0 = {
-	.name		= "osmr0",
-	.features	= CLOCK_EVT_FEAT_ONESHOT,
-	.rating		= 200,
-	.set_next_event	= sa1100_osmr0_set_next_event,
-	.set_mode	= sa1100_osmr0_set_mode,
-};
-
-static struct irqaction sa1100_timer_irq = {
-	.name		= "ost0",
-	.flags		= IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-	.handler	= sa1100_ost0_interrupt,
-	.dev_id		= &ckevt_sa1100_osmr0,
-};
-
-static void __init sa1100_timer_init(void)
-{
-	writel_relaxed(0, OIER);
-	writel_relaxed(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
-
-	setup_sched_clock(sa1100_read_sched_clock, 32, 3686400);
-
-	clockevents_calc_mult_shift(&ckevt_sa1100_osmr0, 3686400, 4);
-	ckevt_sa1100_osmr0.max_delta_ns =
-		clockevent_delta2ns(0x7fffffff, &ckevt_sa1100_osmr0);
-	ckevt_sa1100_osmr0.min_delta_ns =
-		clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_sa1100_osmr0) + 1;
-	ckevt_sa1100_osmr0.cpumask = cpumask_of(0);
-
-	setup_irq(IRQ_OST0, &sa1100_timer_irq);
-
-	clocksource_mmio_init(OSCR, "oscr", CLOCK_TICK_RATE, 200, 32,
-		clocksource_mmio_readl_up);
-	clockevents_register_device(&ckevt_sa1100_osmr0);
-}
-
 #ifdef CONFIG_PM
 unsigned long osmr[4], oier;
 
-static void sa1100_timer_suspend(void)
+static void sa1100_timer_suspend(struct clock_event_device *cedev)
 {
 	osmr[0] = readl_relaxed(OSMR0);
 	osmr[1] = readl_relaxed(OSMR1);
@@ -117,7 +85,7 @@ static void sa1100_timer_suspend(void)
 	oier = readl_relaxed(OIER);
 }
 
-static void sa1100_timer_resume(void)
+static void sa1100_timer_resume(struct clock_event_device *cedev)
 {
 	writel_relaxed(0x0f, OSSR);
 	writel_relaxed(osmr[0], OSMR0);
@@ -129,15 +97,43 @@ static void sa1100_timer_resume(void)
 	/*
 	 * OSMR0 is the system timer: make sure OSCR is sufficiently behind
 	 */
-	writel_relaxed(OSMR0 - LATCH, OSCR);
+	writel_relaxed(OSMR0 - SA1100_LATCH, OSCR);
 }
 #else
 #define sa1100_timer_suspend NULL
 #define sa1100_timer_resume NULL
 #endif
 
-struct sys_timer sa1100_timer = {
-	.init		= sa1100_timer_init,
+static struct clock_event_device ckevt_sa1100_osmr0 = {
+	.name		= "osmr0",
+	.features	= CLOCK_EVT_FEAT_ONESHOT,
+	.rating		= 200,
+	.set_next_event	= sa1100_osmr0_set_next_event,
+	.set_mode	= sa1100_osmr0_set_mode,
 	.suspend	= sa1100_timer_suspend,
 	.resume		= sa1100_timer_resume,
 };
+
+static struct irqaction sa1100_timer_irq = {
+	.name		= "ost0",
+	.flags		= IRQF_TIMER | IRQF_IRQPOLL,
+	.handler	= sa1100_ost0_interrupt,
+	.dev_id		= &ckevt_sa1100_osmr0,
+};
+
+void __init sa1100_timer_init(void)
+{
+	writel_relaxed(0, OIER);
+	writel_relaxed(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
+
+	sched_clock_register(sa1100_read_sched_clock, 32, 3686400);
+
+	ckevt_sa1100_osmr0.cpumask = cpumask_of(0);
+
+	setup_irq(IRQ_OST0, &sa1100_timer_irq);
+
+	clocksource_mmio_init(OSCR, "oscr", SA1100_CLOCK_FREQ, 200, 32,
+		clocksource_mmio_readl_up);
+	clockevents_config_and_register(&ckevt_sa1100_osmr0, 3686400,
+					MIN_OSCR_DELTA * 2, 0x7fffffff);
+}