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linux/arch/arm/include/asm/localtimer.h

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[ARM] smp: move core localtimer support out of platform specific files Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-18 01:58:34 +08:00
/*
* 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
ARM: 7122/1: localtimer: add header linux/errno.h explicitly Per the text in Documentation/SubmitChecklist as below, we should explicitly have header linux/errno.h in localtimer.h for ENXIO reference. 1: If you use a facility then #include the file that defines/declares that facility. Don't depend on other header files pulling in ones that you use. Otherwise, we may run into some compiling error like the following one, if any file includes localtimer.h without CONFIG_LOCAL_TIMERS defined. arch/arm/include/asm/localtimer.h: In function ‘local_timer_setup’: arch/arm/include/asm/localtimer.h:53:10: error: ‘ENXIO’ undeclared (first use in this function) Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-06 21:57:24 +08:00
#include <linux/errno.h>
[ARM] smp: move core localtimer support out of platform specific files Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-18 01:58:34 +08:00
struct clock_event_device;
ARM: local timers: introduce a new registration interface 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>
2012-01-11 03:26:45 +08:00
struct local_timer_ops {
int (*setup)(struct clock_event_device *);
void (*stop)(struct clock_event_device *);
};
[ARM] smp: move core localtimer support out of platform specific files Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-18 01:58:34 +08:00
#ifdef CONFIG_LOCAL_TIMERS
ARM: local timers: introduce a new registration interface 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>
2012-01-11 03:26:45 +08:00
/*
* Register a local timer driver
*/
int local_timer_register(struct local_timer_ops *);
ARM: 6759/1: smp: Select local timers vs broadcast timer support runtime 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>
2011-02-24 01:53:15 +08:00
#else
ARM: local timers: introduce a new registration interface 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>
2012-01-11 03:26:45 +08:00
static inline int local_timer_register(struct local_timer_ops *ops)
{
return -ENXIO;
}
[ARM] smp: move core localtimer support out of platform specific files Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-18 01:58:34 +08:00
#endif
#endif