Release 4.11 drivers/clocksource/versatile.c

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Copyright (C) 2014 ARM Limited
 */

#include <linux/clocksource.h>
#include <linux/io.h>
#include <linux/of_address.h>
#include <linux/sched_clock.h>


#define SYS_24MHZ 0x05c


static void __iomem *versatile_sys_24mhz;



static u64 notrace versatile_sys_24mhz_read(void)
{
	return readl(versatile_sys_24mhz);
}

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Pawel Moll
14
93.33%
1
50.00%
Thomas Gleixner
1
6.67%
1
50.00%
Total
15
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2
100.00%



static int __init versatile_sched_clock_init(struct device_node *node)
{
	void __iomem *base = of_iomap(node, 0);

	if (!base)
		return -ENXIO;

	versatile_sys_24mhz = base + SYS_24MHZ;

	sched_clock_register(versatile_sys_24mhz_read, 32, 24000000);

	return 0;
}
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Pawel Moll
42
82.35%
1
33.33%
Daniel Lezcano
8
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Thomas Gleixner
1
1.96%
1
33.33%
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51
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3
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CLOCKSOURCE_OF_DECLARE(vexpress, "arm,vexpress-sysreg",
		       versatile_sched_clock_init);
CLOCKSOURCE_OF_DECLARE(versatile, "arm,versatile-sysreg",
		       versatile_sched_clock_init);
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Pawel Moll
86
80.37%
1
20.00%
Daniel Lezcano
10
9.35%
2
40.00%
Rob Herring
9
8.41%
1
20.00%
Thomas Gleixner
2
1.87%
1
20.00%
Total
107
100.00%
5
100.00%
Directory: drivers/clocksource

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