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authorRussell King <rmk+kernel@arm.linux.org.uk>2012-03-27 11:30:31 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-03-27 11:30:31 +0100
commitb0df89868006517417251e02cc4ce5d4b0165885 (patch)
tree6800388c633a13f64fd1f7845ce026ca2606522f /arch/arm/mach-prima2
parent4ba21e868f4b6e2ce5432055e206edadc6319533 (diff)
parent6c634726352f0d796a4b5e6aa9849ee5b45712ce (diff)
downloadblackbird-op-linux-b0df89868006517417251e02cc4ce5d4b0165885.tar.gz
blackbird-op-linux-b0df89868006517417251e02cc4ce5d4b0165885.zip
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')
-rw-r--r--arch/arm/mach-prima2/include/mach/system.h17
-rw-r--r--arch/arm/mach-prima2/timer.c21
2 files changed, 7 insertions, 31 deletions
diff --git a/arch/arm/mach-prima2/include/mach/system.h b/arch/arm/mach-prima2/include/mach/system.h
deleted file mode 100644
index 2c7d2a9d0c92..000000000000
--- a/arch/arm/mach-prima2/include/mach/system.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * arch/arm/mach-prima2/include/mach/system.h
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- *
- * Licensed under GPLv2 or later.
- */
-
-#ifndef __MACH_SYSTEM_H__
-#define __MACH_SYSTEM_H__
-
-static inline void arch_idle(void)
-{
- cpu_do_idle();
-}
-
-#endif
diff --git a/arch/arm/mach-prima2/timer.c b/arch/arm/mach-prima2/timer.c
index b7a6091ce791..0d024b1e916d 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();
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