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linux-next/arch/mips/kernel/csrc-r4k.c
John Stultz 75c4fd8c78 mips: convert to clocksource_register_hz/khz
This converts the mips clocksources to use clocksource_register_hz/khz

CC: Ralf Baechle <ralf@linux-mips.org>
CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
2011-02-21 13:33:50 -08:00

37 lines
844 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(struct clocksource *cs)
{
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_r4k_clocksource(void)
{
if (!cpu_has_counter || !mips_hpt_frequency)
return -ENXIO;
/* Calculate a somewhat reasonable rating value */
clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000;
clocksource_register_hz(&clocksource_mips, mips_hpt_frequency);
return 0;
}