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authorLinus Walleij <linus.walleij@linaro.org>2012-01-31 23:38:23 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-03-24 09:38:51 +0000
commita9d6d15131b0519363b0c94734ee80955c411093 (patch)
tree95c534c441e26e11a10fa06abeacbc6fd8b40070 /arch/arm/mach-integrator
parentf9d4861fc32b995b1616775614459b8f266c803c (diff)
ARM: 7310/1: integrator: implement sched_clock across all boards
Now that we can select a sched_clock at runtime, let's implement it for the Integrator AP, default-select the one found in all other board it for all plat-versatile boards and make the right clock kick in at runtime. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-integrator')
-rw-r--r--arch/arm/mach-integrator/Kconfig1
-rw-r--r--arch/arm/mach-integrator/integrator_ap.c7
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-integrator/Kconfig b/arch/arm/mach-integrator/Kconfig
index 350e26636a0..5a6148ab6da 100644
--- a/arch/arm/mach-integrator/Kconfig
+++ b/arch/arm/mach-integrator/Kconfig
@@ -5,6 +5,7 @@ menu "Integrator Options"
config ARCH_INTEGRATOR_AP
bool "Support Integrator/AP and Integrator/PP2 platforms"
select CLKSRC_MMIO
+ select HAVE_SCHED_CLOCK
select MIGHT_HAVE_PCI
select SERIAL_AMBA_PL010
select SERIAL_AMBA_PL010_CONSOLE
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 21a1d6cbef4..4dde28b9dc0 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -42,6 +42,7 @@
#include <asm/setup.h>
#include <asm/param.h> /* HZ */
#include <asm/mach-types.h>
+#include <asm/sched_clock.h>
#include <mach/lm.h>
@@ -325,6 +326,11 @@ static void __init ap_init(void)
static unsigned long timer_reload;
+static u32 notrace integrator_read_sched_clock(void)
+{
+ return -readl((void __iomem *) TIMER2_VA_BASE + TIMER_VALUE);
+}
+
static void integrator_clocksource_init(unsigned long inrate)
{
void __iomem *base = (void __iomem *)TIMER2_VA_BASE;
@@ -341,6 +347,7 @@ static void integrator_clocksource_init(unsigned long inrate)
clocksource_mmio_init(base + TIMER_VALUE, "timer2",
rate, 200, 16, clocksource_mmio_readl_down);
+ setup_sched_clock(integrator_read_sched_clock, 16, rate);
}
static void __iomem * const clkevt_base = (void __iomem *)TIMER1_VA_BASE;