33 lines
865 B
C
33 lines
865 B
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
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*/
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#include <linux/init.h>
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#include <linux/irqchip/mips-gic.h>
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#include <linux/time.h>
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static cycle_t gic_hpt_read(struct clocksource *cs)
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{
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return gic_read_count();
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}
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static struct clocksource gic_clocksource = {
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.name = "GIC",
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.read = gic_hpt_read,
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.flags = CLOCK_SOURCE_IS_CONTINUOUS,
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};
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void __init gic_clocksource_init(unsigned int frequency)
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{
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/* Set clocksource mask. */
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gic_clocksource.mask = CLOCKSOURCE_MASK(gic_get_count_width());
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/* Calculate a somewhat reasonable rating value. */
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gic_clocksource.rating = 200 + frequency / 10000000;
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clocksource_register_hz(&gic_clocksource, frequency);
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}
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