37 lines
855 B
C
37 lines
855 B
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/arm/mach-footbridge/isa-timer.c
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*
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* Copyright (C) 1998 Russell King.
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* Copyright (C) 1998 Phil Blundell
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*/
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#include <linux/clockchips.h>
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#include <linux/i8253.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/spinlock.h>
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#include <linux/timex.h>
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#include <asm/irq.h>
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#include <asm/mach/time.h>
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#include "common.h"
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static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
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{
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struct clock_event_device *ce = dev_id;
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ce->event_handler(ce);
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return IRQ_HANDLED;
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}
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void __init isa_timer_init(void)
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{
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clocksource_i8253_init();
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if (request_irq(i8253_clockevent.irq, pit_timer_interrupt,
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IRQF_TIMER | IRQF_IRQPOLL, "pit", &i8253_clockevent))
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pr_err("Failed to request irq %d(pit)\n", i8253_clockevent.irq);
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clockevent_i8253_init(false);
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}
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