Commit 746140c7 authored by Kevin Hilman's avatar Kevin Hilman Committed by Russell King

[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: default avatarDeepak Saxena <dsaxena@mvista.com>
Signed-off-by: default avatarDaniel Walker <dwalker@mvista.com>
Signed-off-by: default avatarKevin Hilman <khilman@mvista.com>
Acked-by: default avatarJohn Stultz <johnstul@us.ibm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 82606c66
......@@ -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
......
......@@ -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
......
......@@ -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;
......
#ifndef _ASM_ARM_TIMEOFDAY_H
#define _ASM_ARM_TIMEOFDAY_H
#include <asm-generic/timeofday.h>
#endif
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