forked from Minki/linux
39 lines
867 B
C
39 lines
867 B
C
/*
|
|
* 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.
|
|
*
|
|
* Copyright (C) 2007 by Ralf Baechle
|
|
*/
|
|
#include <linux/clocksource.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/time.h>
|
|
|
|
static cycle_t c0_hpt_read(void)
|
|
{
|
|
return read_c0_count();
|
|
}
|
|
|
|
static struct clocksource clocksource_mips = {
|
|
.name = "MIPS",
|
|
.read = c0_hpt_read,
|
|
.mask = CLOCKSOURCE_MASK(32),
|
|
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
|
|
};
|
|
|
|
int __init init_mips_clocksource(void)
|
|
{
|
|
if (!cpu_has_counter || !mips_hpt_frequency)
|
|
return -ENXIO;
|
|
|
|
/* Calclate a somewhat reasonable rating value */
|
|
clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000;
|
|
|
|
clocksource_set_clock(&clocksource_mips, mips_hpt_frequency);
|
|
|
|
clocksource_register(&clocksource_mips);
|
|
|
|
return 0;
|
|
}
|