mirror of
https://github.com/torvalds/linux.git
synced 2024-11-19 02:21:47 +00:00
af90f10d38
The current code support of dummy timers in absence of local timer is compile time. This is an attempt to convert it to runtime so that on few SOC version if the local timers aren't supported kernel can switch to dummy timers. OMAP4430 ES1.0 does suffer from this limitation. This patch should not have any functional impact on affected files. Cc: Daniel Walker <dwalker@codeaurora.org> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Colin Cross <ccross@android.com> Cc: Erik Gilling <konkers@android.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
|
|
* arch/arm/include/asm/localtimer.h
|
|
*
|
|
* Copyright (C) 2004-2005 ARM Ltd.
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifndef __ASM_ARM_LOCALTIMER_H
|
|
#define __ASM_ARM_LOCALTIMER_H
|
|
|
|
struct clock_event_device;
|
|
|
|
/*
|
|
* Setup a per-cpu timer, whether it be a local timer or dummy broadcast
|
|
*/
|
|
void percpu_timer_setup(void);
|
|
|
|
/*
|
|
* Called from assembly, this is the local timer IRQ handler
|
|
*/
|
|
asmlinkage void do_local_timer(struct pt_regs *);
|
|
|
|
|
|
#ifdef CONFIG_LOCAL_TIMERS
|
|
|
|
#ifdef CONFIG_HAVE_ARM_TWD
|
|
|
|
#include "smp_twd.h"
|
|
|
|
#define local_timer_ack() twd_timer_ack()
|
|
|
|
#else
|
|
|
|
/*
|
|
* Platform provides this to acknowledge a local timer IRQ.
|
|
* Returns true if the local timer IRQ is to be processed.
|
|
*/
|
|
int local_timer_ack(void);
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Setup a local timer interrupt for a CPU.
|
|
*/
|
|
int local_timer_setup(struct clock_event_device *);
|
|
|
|
#else
|
|
|
|
static inline int local_timer_setup(struct clock_event_device *evt)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
#endif
|
|
|
|
#endif
|