aa01666df3
This builds on some of the clock framework code to support a simple system timer interface. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/*
|
|
* arch/sh/kernel/timers/timer.c - Common timer code
|
|
*
|
|
* Copyright (C) 2005 Paul Mundt
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/string.h>
|
|
#include <asm/timer.h>
|
|
|
|
static struct sys_timer *sys_timers[] __initdata = {
|
|
#ifdef CONFIG_SH_TMU
|
|
&tmu_timer,
|
|
#endif
|
|
NULL,
|
|
};
|
|
|
|
static char timer_override[10] __initdata;
|
|
static int __init timer_setup(char *str)
|
|
{
|
|
if (str)
|
|
strlcpy(timer_override, str, sizeof(timer_override));
|
|
return 1;
|
|
}
|
|
__setup("timer=", timer_setup);
|
|
|
|
struct sys_timer *get_sys_timer(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sys_timers); i++) {
|
|
struct sys_timer *t = sys_timers[i];
|
|
|
|
if (unlikely(!t))
|
|
break;
|
|
if (unlikely(timer_override[0]))
|
|
if ((strcmp(timer_override, t->name) != 0))
|
|
continue;
|
|
if (likely(t->ops->init() == 0))
|
|
return t;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|