diff options
| author | Benedikt Spranger <b.spranger@linutronix.de> | 2010-03-06 17:47:10 +0100 |
|---|---|---|
| committer | Gary S. Robertson <gary.robertson@linaro.org> | 2014-06-06 15:23:44 -0500 |
| commit | dcfcc6979dbc55161b15256210fa8f2bf58c9209 (patch) | |
| tree | 534245d350cfc04df4bf1327d47eba35cf3d38a8 /arch | |
| parent | 12d2c5f306be51042c5681f8228f813b9c91e985 (diff) | |
ARM: AT91: PIT: Remove irq handler when clock event is unused
Setup and remove the interrupt handler in clock event mode selection.
This avoids calling the (shared) interrupt handler when the device is
not used.
Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bigeasy: redo the patch with NR_IRQS_LEGACY which is probably required since
commit 8fe82a55 ("ARM: at91: sparse irq support") which is included since v3.6.
Patch based on what Sami Pietikäinen <Sami.Pietikainen@wapice.com> suggested].
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-at91/at91rm9200_time.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-at91/at91sam926x_time.c | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index bc7b363a3083..fd34d55e5aa3 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -134,6 +134,7 @@ clkevt32k_mode(enum clock_event_mode mode, struct clock_event_device *dev) break; case CLOCK_EVT_MODE_SHUTDOWN: case CLOCK_EVT_MODE_UNUSED: + remove_irq(NR_IRQS_LEGACY + AT91_ID_SYS, &at91rm9200_timer_irq); case CLOCK_EVT_MODE_RESUME: irqmask = 0; break; diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c index 0f04ffe9c5a8..a32dc6914fda 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -78,7 +78,7 @@ static struct clocksource pit_clk = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; - +static struct irqaction at91sam926x_pit_irq; /* * Clockevent device: interrupts every 1/HZ (== pit_cycles * MCK/16) */ @@ -87,6 +87,8 @@ pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { switch (mode) { case CLOCK_EVT_MODE_PERIODIC: + /* Set up irq handler */ + setup_irq(at91sam926x_pit_irq.irq, &at91sam926x_pit_irq); /* update clocksource counter */ pit_cnt += pit_cycle * PIT_PICNT(pit_read(AT91_PIT_PIVR)); pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN @@ -99,6 +101,7 @@ pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) case CLOCK_EVT_MODE_UNUSED: /* disable irq, leaving the clocksource active */ pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN); + remove_irq(at91sam926x_pit_irq.irq, &at91sam926x_pit_irq); break; case CLOCK_EVT_MODE_RESUME: break; |