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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-12-19 15:43:34 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-12-19 15:44:53 +0000
commit40cc52440073903f3b7477a3391c4ca0761445d0 (patch)
tree3f1f0cdf4180746acb32e3b1089b3a771fb8258c /arch/arm/plat-iop
parent83cf1eecfe9afee99d6b86f963187acd414c019d (diff)
downloadlwn-40cc52440073903f3b7477a3391c4ca0761445d0.tar.gz
lwn-40cc52440073903f3b7477a3391c4ca0761445d0.zip
ARM: clockevents: fix IOP clock events initialization
Ensure that no interrupt is pending before registering the clock event device, and properly initialize the periodic tick in the ->set_mode callback. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-iop')
-rw-r--r--arch/arm/plat-iop/time.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index 85d3e55ca4a9..d615e6fbe502 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -87,6 +87,7 @@ static void iop_set_mode(enum clock_event_mode mode,
case CLOCK_EVT_MODE_PERIODIC:
write_tmr0(tmr & ~IOP_TMR_EN);
write_tcr0(ticks_per_jiffy - 1);
+ write_trr0(ticks_per_jiffy - 1);
tmr |= (IOP_TMR_RELOAD | IOP_TMR_EN);
break;
case CLOCK_EVT_MODE_ONESHOT:
@@ -152,6 +153,7 @@ void __init iop_init_time(unsigned long tick_rate)
* Set up interrupting clockevent timer 0.
*/
write_tmr0(timer_ctl & ~IOP_TMR_EN);
+ write_tisr(1);
setup_irq(IRQ_IOP_TIMER0, &iop_timer_irq);
clockevents_calc_mult_shift(&iop_clockevent,
tick_rate, IOP_MIN_RANGE);
@@ -161,9 +163,6 @@ void __init iop_init_time(unsigned long tick_rate)
clockevent_delta2ns(0xf, &iop_clockevent);
iop_clockevent.cpumask = cpumask_of(0);
clockevents_register_device(&iop_clockevent);
- write_trr0(ticks_per_jiffy - 1);
- write_tcr0(ticks_per_jiffy - 1);
- write_tmr0(timer_ctl);
/*
* Set up free-running clocksource timer 1.