diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-01-15 18:19:56 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-05-02 09:35:35 +0100 |
| commit | 4ce1755275c13eb0de90fe23c950bce5e81e680f (patch) | |
| tree | c6ee385d4d3ee92e36ec2e7ec0fa0e2245435217 /arch/arm/plat-versatile | |
| parent | fe8e1a57f0ccdaede41618ca9ced7d746b6298d3 (diff) | |
| download | lwn-4ce1755275c13eb0de90fe23c950bce5e81e680f.tar.gz lwn-4ce1755275c13eb0de90fe23c950bce5e81e680f.zip | |
ARM: Realview/Versatile: don't use magic numbers for timer frequency
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-versatile')
| -rw-r--r-- | arch/arm/plat-versatile/timer-sp.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm/plat-versatile/timer-sp.c b/arch/arm/plat-versatile/timer-sp.c index d1dbef5b17b1..fb0d1c299718 100644 --- a/arch/arm/plat-versatile/timer-sp.c +++ b/arch/arm/plat-versatile/timer-sp.c @@ -26,15 +26,13 @@ #include <asm/hardware/arm_timer.h> -#include <mach/platform.h> - #include <plat/timer-sp.h> /* - * How long is the timer interval? + * These timers are currently always setup to be clocked at 1MHz. */ -#define TIMER_RELOAD (TICKS_PER_uSEC * mSEC_10) - +#define TIMER_FREQ_KHZ (1000) +#define TIMER_RELOAD (TIMER_FREQ_KHZ * 1000 / HZ) static void __iomem *clksrc_base; @@ -65,7 +63,7 @@ void __init sp804_clocksource_init(void __iomem *base) writel(TIMER_CTRL_32BIT | TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC, clksrc_base + TIMER_CTRL); - cs->mult = clocksource_khz2mult(1000, cs->shift); + cs->mult = clocksource_khz2mult(TIMER_FREQ_KHZ, cs->shift); clocksource_register(cs); } @@ -149,7 +147,7 @@ void __init sp804_clockevents_init(void __iomem *base, unsigned int timer_irq) clkevt_base = base; evt->irq = timer_irq; - evt->mult = div_sc(1000000, NSEC_PER_SEC, evt->shift); + evt->mult = div_sc(TIMER_FREQ_KHZ, NSEC_PER_MSEC, evt->shift); evt->max_delta_ns = clockevent_delta2ns(0xffffffff, evt); evt->min_delta_ns = clockevent_delta2ns(0xf, evt); |