1/*
2 *  linux/arch/arm/plat-versatile/sched-clock.c
3 *
4 *  Copyright (C) 1999 - 2003 ARM Limited
5 *  Copyright (C) 2000 Deep Blue Solutions Ltd
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20 */
21#include <linux/kernel.h>
22#include <linux/io.h>
23#include <linux/sched_clock.h>
24
25#include <plat/sched_clock.h>
26
27static void __iomem *ctr;
28
29static u64 notrace versatile_read_sched_clock(void)
30{
31	if (ctr)
32		return readl(ctr);
33
34	return 0;
35}
36
37void __init versatile_sched_clock_init(void __iomem *reg, unsigned long rate)
38{
39	ctr = reg;
40	sched_clock_register(versatile_read_sched_clock, 32, rate);
41}
42