[linux-block.git] / arch / arm / plat-versatile / sched-clock.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  linux/arch/arm/plat-versatile/sched-clock.c
 *
 *  Copyright (C) 1999 - 2003 ARM Limited
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 */
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/sched_clock.h>

#include <plat/sched_clock.h>

static void __iomem *ctr;

static u64 notrace versatile_read_sched_clock(void)
{
	if (ctr)
		return readl(ctr);

	return 0;
}

void __init versatile_sched_clock_init(void __iomem *reg, unsigned long rate)
{
	ctr = reg;
	sched_clock_register(versatile_read_sched_clock, 32, rate);
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
f5fc0082 RK	2	/*
	3	* linux/arch/arm/plat-versatile/sched-clock.c
	4	*
	5	* Copyright (C) 1999 - 2003 ARM Limited
	6	* Copyright (C) 2000 Deep Blue Solutions Ltd
f5fc0082	7	*/
2f0778af	8	#include <linux/kernel.h>
f5fc0082	9	#include <linux/io.h>
38ff87f7	10	#include <linux/sched_clock.h>
f5fc0082	11
1da0c89c	12	#include <plat/sched_clock.h>
f5fc0082	13
1da0c89c	14	static void __iomem *ctr;
f5fc0082	15
d25f1d5a	16	static u64 notrace versatile_read_sched_clock(void)
f5fc0082	17	{
2f0778af MZ	18	if (ctr)
2f0778af MZ	19	return readl(ctr);
f5fc0082	20
2f0778af	21	return 0;
1da0c89c	22	}
f5fc0082	23
1da0c89c RK	24	void __init versatile_sched_clock_init(void __iomem *reg, unsigned long rate)
	25	{
	26	ctr = reg;
d25f1d5a	27	sched_clock_register(versatile_read_sched_clock, 32, rate);
f5fc0082	28	}