483e483620
In order to switch to a runtime selectable local timer, add a registration interface that timer drivers can use to register to the core. local_timer_setup() and local_timer_stop() are made weak symbols in order not to break existing setups. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Sathish Ambley <sambley@codeaurora.org>
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/*
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* arch/arm/include/asm/localtimer.h
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*
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* Copyright (C) 2004-2005 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARM_LOCALTIMER_H
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#define __ASM_ARM_LOCALTIMER_H
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#include <linux/interrupt.h>
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struct clock_event_device;
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struct local_timer_ops {
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int (*setup)(struct clock_event_device *);
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void (*stop)(struct clock_event_device *);
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};
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/*
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* Setup a per-cpu timer, whether it be a local timer or dummy broadcast
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*/
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void percpu_timer_setup(void);
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#ifdef CONFIG_LOCAL_TIMERS
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#ifdef CONFIG_HAVE_ARM_TWD
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#include "smp_twd.h"
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#define local_timer_stop(c) twd_timer_stop((c))
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#else
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/*
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* Stop the local timer
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*/
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void local_timer_stop(struct clock_event_device *);
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#endif
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/*
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* Setup a local timer interrupt for a CPU.
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*/
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int local_timer_setup(struct clock_event_device *);
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/*
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* Register a local timer driver
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*/
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int local_timer_register(struct local_timer_ops *);
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#else
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static inline int local_timer_setup(struct clock_event_device *evt)
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{
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return -ENXIO;
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}
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static inline void local_timer_stop(struct clock_event_device *evt)
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{
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}
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static inline int local_timer_register(struct local_timer_ops *ops)
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{
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return -ENXIO;
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}
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#endif
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#endif
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