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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: gic: consolidate PPI handling PPI handling is a bit of an odd beast. It uses its own low level handling code and is hardwired to the local timers (hence lacking a registration interface). Instead, switch the low handling to the normal SPI handling code. PPIs are handled by the handle_percpu_devid_irq flow. This also allows the removal of some duplicated code. Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: David Brown <davidb@codeaurora.org> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Brown <davidb@codeaurora.org> Tested-by: David Brown <davidb@codeaurora.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2011-07-20 23:24:14 +08:00
#include <linux/interrupt.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
[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;
/*
* Setup a per-cpu timer, whether it be a local timer or dummy broadcast
*/
void percpu_timer_setup(void);
#ifdef CONFIG_LOCAL_TIMERS
[ARM] smp: allow re-use of realview localtimer TWD support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-16 19:14:21 +08:00
#ifdef CONFIG_HAVE_ARM_TWD
#include "smp_twd.h"
ARM: smp_twd: make local_timer_stop a symbol instead of a #define When CONFIG_HAVE_ARM_TWD is selected, local_timer_stop is a #define, while all other local timers are using a real function. Convert it to an alias of twd_timer_stop, as it helps converting all local timers to another internal API in a sane way. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2012-01-11 03:07:28 +08:00
#endif
[ARM] smp: allow re-use of realview localtimer TWD support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-16 19:14:21 +08:00
[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
/*
ARM: gic, local timers: use the request_percpu_irq() interface This patch remove the hardcoded link between local timers and PPIs, and convert the PPI users (TWD, MCT and MSM timers) to the new *_percpu_irq interface. Also some collateral cleanup (local_timer_ack() is gone, and the interrupt handler is strictly private to each driver). PPIs are now useable for more than just the local timers. Additional testing by David Brown (msm8250 and msm8660) and Shawn Guo (imx6q). Cc: David Brown <davidb@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Brown <davidb@codeaurora.org> Tested-by: David Brown <davidb@codeaurora.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2011-07-22 19:52:37 +08:00
* Stop the local timer
[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
*/
ARM: gic, local timers: use the request_percpu_irq() interface This patch remove the hardcoded link between local timers and PPIs, and convert the PPI users (TWD, MCT and MSM timers) to the new *_percpu_irq interface. Also some collateral cleanup (local_timer_ack() is gone, and the interrupt handler is strictly private to each driver). PPIs are now useable for more than just the local timers. Additional testing by David Brown (msm8250 and msm8660) and Shawn Guo (imx6q). Cc: David Brown <davidb@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Brown <davidb@codeaurora.org> Tested-by: David Brown <davidb@codeaurora.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2011-07-22 19:52:37 +08:00
void local_timer_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
/*
* Setup a local timer interrupt for a CPU.
*/
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
int local_timer_setup(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
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
static inline int local_timer_setup(struct clock_event_device *evt)
{
return -ENXIO;
}
ARM: gic, local timers: use the request_percpu_irq() interface This patch remove the hardcoded link between local timers and PPIs, and convert the PPI users (TWD, MCT and MSM timers) to the new *_percpu_irq interface. Also some collateral cleanup (local_timer_ack() is gone, and the interrupt handler is strictly private to each driver). PPIs are now useable for more than just the local timers. Additional testing by David Brown (msm8250 and msm8660) and Shawn Guo (imx6q). Cc: David Brown <davidb@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Brown <davidb@codeaurora.org> Tested-by: David Brown <davidb@codeaurora.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2011-07-22 19:52:37 +08:00
static inline void local_timer_stop(struct clock_event_device *evt)
{
}
[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
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