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ARM: gic, local timers: use the request_percpu_irq() interface

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This patch remove the hardcoded link between local timers and PPIs,
and convert the PPI users (TWD, MCT and MSM timers) to the new
*_percpu_irq interface. Also some collateral cleanup
(local_timer_ack() is gone, and the interrupt handler is strictly
private to each driver).

PPIs are now useable for more than just the local timers.

Additional testing by David Brown (msm8250 and msm8660) and
Shawn Guo (imx6q).

Cc: David Brown <davidb@codeaurora.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Brown <davidb@codeaurora.org>
Tested-by: David Brown <davidb@codeaurora.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier
2011-07-22 12:52:37 +01:00
parent 292b293cee
commit 28af690a28
8 changed files with 99 additions and 111 deletions
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16
arch/arm/kernel/smp.c
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@@ -473,20 +473,6 @@ static void ipi_timer(void)
irq_exit();
}
#ifdef CONFIG_LOCAL_TIMERS
irqreturn_t percpu_timer_handler(int irq, void *dev_id)
{
struct clock_event_device *evt = &__get_cpu_var(percpu_clockevent);
if (local_timer_ack()) {
evt->event_handler(evt);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
#endif
#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
static void smp_timer_broadcast(const struct cpumask *mask)
{
@@ -537,7 +523,7 @@ static void percpu_timer_stop(void)
unsigned int cpu = smp_processor_id();
struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
local_timer_stop(evt);
}
#endif