diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-03-27 11:30:31 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-03-27 11:30:31 +0100 |
| commit | b0df89868006517417251e02cc4ce5d4b0165885 (patch) | |
| tree | 6800388c633a13f64fd1f7845ce026ca2606522f /arch/arm/mach-prima2/timer.c | |
| parent | 4ba21e868f4b6e2ce5432055e206edadc6319533 (diff) | |
| parent | 6c634726352f0d796a4b5e6aa9849ee5b45712ce (diff) | |
Merge branch 'devel-stable' into for-linus
Conflicts:
arch/arm/Kconfig.debug
arch/arm/plat-versatile/Kconfig
Merge fixes:
arch/arm/mach-integrator/Kconfig
drivers/clocksource/Kconfig
Diffstat (limited to 'arch/arm/mach-prima2/timer.c')
| -rw-r--r-- | arch/arm/mach-prima2/timer.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/arch/arm/mach-prima2/timer.c b/arch/arm/mach-prima2/timer.c index b7a6091ce79..0d024b1e916 100644 --- a/arch/arm/mach-prima2/timer.c +++ b/arch/arm/mach-prima2/timer.c @@ -18,6 +18,7 @@ #include <linux/of.h> #include <linux/of_address.h> #include <mach/map.h> +#include <asm/sched_clock.h> #include <asm/mach/time.h> #define SIRFSOC_TIMER_COUNTER_LO 0x0000 @@ -165,21 +166,9 @@ static struct irqaction sirfsoc_timer_irq = { }; /* Overwrite weak default sched_clock with more precise one */ -unsigned long long notrace sched_clock(void) +static u32 notrace sirfsoc_read_sched_clock(void) { - static int is_mapped; - - /* - * sched_clock is called earlier than .init of sys_timer - * if we map timer memory in .init of sys_timer, system - * will panic due to illegal memory access - */ - if (!is_mapped) { - sirfsoc_of_timer_map(); - is_mapped = 1; - } - - return sirfsoc_timer_read(NULL) * (NSEC_PER_SEC / CLOCK_TICK_RATE); + return (u32)(sirfsoc_timer_read(NULL) & 0xffffffff); } static void __init sirfsoc_clockevent_init(void) @@ -210,6 +199,8 @@ static void __init sirfsoc_timer_init(void) BUG_ON(rate < CLOCK_TICK_RATE); BUG_ON(rate % CLOCK_TICK_RATE); + sirfsoc_of_timer_map(); + writel_relaxed(rate / CLOCK_TICK_RATE / 2 - 1, sirfsoc_timer_base + SIRFSOC_TIMER_DIV); writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO); writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI); @@ -217,6 +208,8 @@ static void __init sirfsoc_timer_init(void) BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, CLOCK_TICK_RATE)); + setup_sched_clock(sirfsoc_read_sched_clock, 32, CLOCK_TICK_RATE); + BUG_ON(setup_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq)); sirfsoc_clockevent_init(); |