summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-realview/localtimer.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-realview/localtimer.c')
-rw-r--r--arch/arm/mach-realview/localtimer.c48
1 files changed, 21 insertions, 27 deletions
diff --git a/arch/arm/mach-realview/localtimer.c b/arch/arm/mach-realview/localtimer.c
index 44d178cd573..67d6d9cc68b 100644
--- a/arch/arm/mach-realview/localtimer.c
+++ b/arch/arm/mach-realview/localtimer.c
@@ -38,18 +38,14 @@ void local_timer_interrupt(void)
#ifdef CONFIG_LOCAL_TIMERS
-#define TWD_BASE(cpu) (twd_base_addr + (cpu) * twd_size)
-
/* set up by the platform code */
-void __iomem *twd_base_addr;
-unsigned int twd_size;
+void __iomem *twd_base;
static unsigned long mpcore_timer_rate;
static void local_timer_set_mode(enum clock_event_mode mode,
struct clock_event_device *clk)
{
- void __iomem *base = TWD_BASE(smp_processor_id());
unsigned long ctrl;
switch(mode) {
@@ -68,17 +64,16 @@ static void local_timer_set_mode(enum clock_event_mode mode,
ctrl = 0;
}
- __raw_writel(ctrl, base + TWD_TIMER_CONTROL);
+ __raw_writel(ctrl, twd_base + TWD_TIMER_CONTROL);
}
static int local_timer_set_next_event(unsigned long evt,
struct clock_event_device *unused)
{
- void __iomem *base = TWD_BASE(smp_processor_id());
- unsigned long ctrl = __raw_readl(base + TWD_TIMER_CONTROL);
+ unsigned long ctrl = __raw_readl(twd_base + TWD_TIMER_CONTROL);
- __raw_writel(evt, base + TWD_TIMER_COUNTER);
- __raw_writel(ctrl | TWD_TIMER_CONTROL_ENABLE, base + TWD_TIMER_CONTROL);
+ __raw_writel(evt, twd_base + TWD_TIMER_COUNTER);
+ __raw_writel(ctrl | TWD_TIMER_CONTROL_ENABLE, twd_base + TWD_TIMER_CONTROL);
return 0;
}
@@ -91,19 +86,16 @@ static int local_timer_set_next_event(unsigned long evt,
*/
int local_timer_ack(void)
{
- void __iomem *base = TWD_BASE(smp_processor_id());
-
- if (__raw_readl(base + TWD_TIMER_INTSTAT)) {
- __raw_writel(1, base + TWD_TIMER_INTSTAT);
+ if (__raw_readl(twd_base + TWD_TIMER_INTSTAT)) {
+ __raw_writel(1, twd_base + TWD_TIMER_INTSTAT);
return 1;
}
return 0;
}
-static void __cpuinit twd_calibrate_rate(unsigned int cpu)
+static void __cpuinit twd_calibrate_rate(void)
{
- void __iomem *base = TWD_BASE(cpu);
unsigned long load, count;
u64 waitjiffies;
@@ -124,15 +116,15 @@ static void __cpuinit twd_calibrate_rate(unsigned int cpu)
waitjiffies += 5;
/* enable, no interrupt or reload */
- __raw_writel(0x1, base + TWD_TIMER_CONTROL);
+ __raw_writel(0x1, twd_base + TWD_TIMER_CONTROL);
/* maximum value */
- __raw_writel(0xFFFFFFFFU, base + TWD_TIMER_COUNTER);
+ __raw_writel(0xFFFFFFFFU, twd_base + TWD_TIMER_COUNTER);
while (get_jiffies_64() < waitjiffies)
udelay(10);
- count = __raw_readl(base + TWD_TIMER_COUNTER);
+ count = __raw_readl(twd_base + TWD_TIMER_COUNTER);
mpcore_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
@@ -142,18 +134,19 @@ static void __cpuinit twd_calibrate_rate(unsigned int cpu)
load = mpcore_timer_rate / HZ;
- __raw_writel(load, base + TWD_TIMER_LOAD);
+ __raw_writel(load, twd_base + TWD_TIMER_LOAD);
}
/*
* Setup the local clock events for a CPU.
*/
-void __cpuinit local_timer_setup(unsigned int cpu)
+void __cpuinit local_timer_setup(void)
{
+ unsigned int cpu = smp_processor_id();
struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
unsigned long flags;
- twd_calibrate_rate(cpu);
+ twd_calibrate_rate();
clk->name = "local_timer";
clk->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
@@ -161,7 +154,7 @@ void __cpuinit local_timer_setup(unsigned int cpu)
clk->set_mode = local_timer_set_mode;
clk->set_next_event = local_timer_set_next_event;
clk->irq = IRQ_LOCALTIMER;
- clk->cpumask = cpumask_of_cpu(cpu);
+ clk->cpumask = cpumask_of(cpu);
clk->shift = 20;
clk->mult = div_sc(mpcore_timer_rate, NSEC_PER_SEC, clk->shift);
clk->max_delta_ns = clockevent_delta2ns(0xffffffff, clk);
@@ -178,9 +171,9 @@ void __cpuinit local_timer_setup(unsigned int cpu)
/*
* take a local timer down
*/
-void __cpuexit local_timer_stop(unsigned int cpu)
+void __cpuexit local_timer_stop(void)
{
- __raw_writel(0, TWD_BASE(cpu) + TWD_TIMER_CONTROL);
+ __raw_writel(0, twd_base + TWD_TIMER_CONTROL);
}
#else /* CONFIG_LOCAL_TIMERS */
@@ -190,8 +183,9 @@ static void dummy_timer_set_mode(enum clock_event_mode mode,
{
}
-void __cpuinit local_timer_setup(unsigned int cpu)
+void __cpuinit local_timer_setup(void)
{
+ unsigned int cpu = smp_processor_id();
struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
clk->name = "dummy_timer";
@@ -199,7 +193,7 @@ void __cpuinit local_timer_setup(unsigned int cpu)
clk->rating = 200;
clk->set_mode = dummy_timer_set_mode;
clk->broadcast = smp_timer_broadcast;
- clk->cpumask = cpumask_of_cpu(cpu);
+ clk->cpumask = cpumask_of(cpu);
clockevents_register_device(clk);
}