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| author | Kevin Hilman <khilman@mvista.com> | 2006-09-22 01:16:30 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-28 21:59:24 +0200 |
| commit | 746140c71d537560bbd22c1b148fb21031c30e71 (patch) | |
| tree | c9753521f7443f946b966d0e8bd19d60c71f99f9 | |
| parent | [ARM] 3873/1: S3C24XX: Add irq_chip names (diff) | |
| download | linux-746140c71d537560bbd22c1b148fb21031c30e71.tar.xz linux-746140c71d537560bbd22c1b148fb21031c30e71.zip | |
[ARM] 3855/1: Add generic time support
This patch adds Generic time-of-day support for the ARM architecture.
The support is currently added using #ifdef's so that it can support
sub-arches that do not (yet) have a clocksource added. As sub-arches
add clocksource support, they should 'select GENERIC_TIME'
Signed-off-by: Deepak Saxena <dsaxena@mvista.com>
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Acked-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm/kernel/time.c | 6 | ||||
| -rw-r--r-- | include/asm-arm/mach/time.h | 2 | ||||
| -rw-r--r-- | include/asm-arm/timeofday.h | 4 |
4 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0810d27c039e..314ac6ba0ec4 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -17,6 +17,10 @@ config ARM Europe. There is an ARM Linux project with a web page at <http://www.arm.linux.org.uk/>. +config GENERIC_TIME + bool + default n + config MMU bool default y diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index 09a67d771857..d4dceb5f06e9 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -69,10 +69,12 @@ EXPORT_SYMBOL(profile_pc); */ int (*set_rtc)(void); +#ifndef CONFIG_GENERIC_TIME static unsigned long dummy_gettimeoffset(void) { return 0; } +#endif /* * Scheduler clock - returns current time in nanosec units. @@ -230,6 +232,7 @@ static inline void do_leds(void) #define do_leds() #endif +#ifndef CONFIG_GENERIC_TIME void do_gettimeofday(struct timeval *tv) { unsigned long flags; @@ -291,6 +294,7 @@ int do_settimeofday(struct timespec *tv) } EXPORT_SYMBOL(do_settimeofday); +#endif /* !CONFIG_GENERIC_TIME */ /** * save_time_delta - Save the offset between system time and RTC time @@ -500,8 +504,10 @@ device_initcall(timer_init_sysfs); void __init time_init(void) { +#ifndef CONFIG_GENERIC_TIME if (system_timer->offset == NULL) system_timer->offset = dummy_gettimeoffset; +#endif system_timer->init(); #ifdef CONFIG_NO_IDLE_HZ diff --git a/include/asm-arm/mach/time.h b/include/asm-arm/mach/time.h index dee0bc336fe8..1eb93f5c0d6c 100644 --- a/include/asm-arm/mach/time.h +++ b/include/asm-arm/mach/time.h @@ -38,7 +38,9 @@ struct sys_timer { void (*init)(void); void (*suspend)(void); void (*resume)(void); +#ifndef CONFIG_GENERIC_TIME unsigned long (*offset)(void); +#endif #ifdef CONFIG_NO_IDLE_HZ struct dyn_tick_timer *dyn_tick; diff --git a/include/asm-arm/timeofday.h b/include/asm-arm/timeofday.h new file mode 100644 index 000000000000..27254bd5b94f --- /dev/null +++ b/include/asm-arm/timeofday.h @@ -0,0 +1,4 @@ +#ifndef _ASM_ARM_TIMEOFDAY_H +#define _ASM_ARM_TIMEOFDAY_H +#include <asm-generic/timeofday.h> +#endif |