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[MIPS] i8253: Cleanup.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-11-01 14:38:20 +00:00
parent 9aa4cc11b2
commit dd3db6eb0e
1 changed files with 11 additions and 10 deletions
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21
arch/mips/kernel/i8253.c
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@ -12,6 +12,7 @@
#include <asm/delay.h>
#include <asm/i8253.h>
#include <asm/io.h>
#include <asm/time.h>
static DEFINE_SPINLOCK(i8253_lock);
@ -87,11 +88,10 @@ struct clock_event_device pit_clockevent = {
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_mode = init_pit_timer,
.set_next_event = pit_next_event,
.shift = 32,
.irq = 0,
};
irqreturn_t timer_interrupt(int irq, void *dev_id)
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
pit_clockevent.event_handler(&pit_clockevent);
@ -111,19 +111,20 @@ static struct irqaction irq0 = {
*/
void __init setup_pit_timer(void)
{
struct clock_event_device *cd = &pit_clockevent;
unsigned int cpu = smp_processor_id();
/*
* Start pit with the boot cpu mask and make it global after the
* IO_APIC has been initialized.
*/
pit_clockevent.cpumask = cpumask_of_cpu(0);
pit_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, 32);
pit_clockevent.max_delta_ns =
clockevent_delta2ns(0x7FFF, &pit_clockevent);
pit_clockevent.min_delta_ns =
clockevent_delta2ns(0xF, &pit_clockevent);
clockevents_register_device(&pit_clockevent);
cd->cpumask = cpumask_of_cpu(cpu);
clockevent_set_clock(cd, CLOCK_TICK_RATE);
cd->max_delta_ns = clockevent_delta2ns(0x7FFF, cd);
cd->min_delta_ns = clockevent_delta2ns(0xF, cd);
clockevents_register_device(cd);
irq0.mask = cpumask_of_cpu(0);
irq0.mask = cpumask_of_cpu(cpu);
setup_irq(0, &irq0);
}