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ARM: 7243/1: sp804: modernize clock event registration

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This removes the hardcoded shift value and lets the clockevent core
come up with suitable mult and div factors. Tested on the
Integrator/CP.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij 2011-12-21 13:25:34 +01:00 committed by Russell King
parent 4fd7f9b128
commit 7c324d837f
1 changed files with 1 additions and 6 deletions
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7
arch/arm/common/timer-sp.c
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@ -143,7 +143,6 @@ static int sp804_set_next_event(unsigned long next,
}
static struct clock_event_device sp804_clockevent = {
.shift = 32,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_mode = sp804_set_mode,
.set_next_event = sp804_set_next_event,
@ -169,13 +168,9 @@ void __init sp804_clockevents_init(void __iomem *base, unsigned int irq,
clkevt_base = base;
clkevt_reload = DIV_ROUND_CLOSEST(rate, HZ);
evt->name = name;
evt->irq = irq;
evt->mult = div_sc(rate, NSEC_PER_SEC, evt->shift);
evt->max_delta_ns = clockevent_delta2ns(0xffffffff, evt);
evt->min_delta_ns = clockevent_delta2ns(0xf, evt);
setup_irq(irq, &sp804_timer_irq);
clockevents_register_device(evt);
clockevents_config_and_register(evt, rate, 0xf, 0xffffffff);
}