diff options
| author | Benedikt Spranger <b.spranger@linutronix.de> | 2010-03-06 17:47:10 +0100 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-13 11:01:18 -0500 |
| commit | a8da0aa82b3ba0fe5d8209929a5e33aa0d92c0ea (patch) | |
| tree | 8ddbfc0ac1b3c78e52996cc60ecdc8ad04c7b4d9 /arch | |
| parent | 14d0a5b67e718a1288eb14864d73608211d9cdb8 (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>
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 dd7f782b0b91..48632b02bb36 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -129,6 +129,7 @@ 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(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 a94758b42737..dd300f35385f 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -67,7 +67,7 @@ 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) */ @@ -76,6 +76,8 @@ 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(AT91_ID_SYS, &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 @@ -88,6 +90,7 @@ 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(AT91_ID_SYS, &at91sam926x_pit_irq); break; case CLOCK_EVT_MODE_RESUME: break; |