bd0493eaaf
At the moment, read_persistent_clock is implemented at the platform level, which makes it impossible to compile these platforms in a single kernel. Implement these two functions at the architecture level, and provide a thin registration interface for both read_boot_clock and read_persistent_clock. The two affected platforms (OMAP and Tegra) are converted at the same time. Reported-by: Jeff Ohlstein <johlstei@codeaurora.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*
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* arch/arm/include/asm/mach/time.h
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*
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* Copyright (C) 2004 MontaVista Software, Inc.
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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_MACH_TIME_H
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#define __ASM_ARM_MACH_TIME_H
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/*
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* This is our kernel timer structure.
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*
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* - init
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* Initialise the kernels jiffy timer source, claim interrupt
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* using setup_irq. This is called early on during initialisation
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* while interrupts are still disabled on the local CPU.
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* - suspend
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* Suspend the kernel jiffy timer source, if necessary. This
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* is called with interrupts disabled, after all normal devices
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* have been suspended. If no action is required, set this to
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* NULL.
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* - resume
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* Resume the kernel jiffy timer source, if necessary. This
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* is called with interrupts disabled before any normal devices
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* are resumed. If no action is required, set this to NULL.
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* - offset
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* Return the timer offset in microseconds since the last timer
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* interrupt. Note: this must take account of any unprocessed
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* timer interrupt which may be pending.
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*/
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struct sys_timer {
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void (*init)(void);
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void (*suspend)(void);
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void (*resume)(void);
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#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
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unsigned long (*offset)(void);
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#endif
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};
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extern void timer_tick(void);
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struct timespec;
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typedef void (*clock_access_fn)(struct timespec *);
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extern int register_persistent_clock(clock_access_fn read_boot,
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clock_access_fn read_persistent);
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#endif
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