forked from Minki/linux
ec0b9d35d1
Weak header file declarations are error-prone because they make every
definition weak, and the linker chooses one based on link order (see
10629d711e ("PCI: Remove __weak annotation from pcibios_get_phb_of_node
decl")).
get_c0_compare_int() is defined in several files. Each definition is weak,
so I assume Kconfig prevents two or more from being included. The caller
contains default code used when get_c0_compare_int() isn't defined at all.
Add a weak get_c0_compare_int() definition with the default code and remove
the weak annotation from the declaration.
Then the platform implementations will be strong and will override the weak
default. If multiple platforms are ever configured in, we'll get a link
error instead of calling a random platform's implementation.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10686/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
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* Copyright (C) 2001, 2002, MontaVista Software Inc.
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* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
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* Copyright (c) 2003 Maciej W. Rozycki
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*
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* include/asm-mips/time.h
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* header file for the new style time.c file and time services.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef _ASM_TIME_H
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#define _ASM_TIME_H
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#include <linux/rtc.h>
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#include <linux/spinlock.h>
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#include <linux/clockchips.h>
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#include <linux/clocksource.h>
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extern spinlock_t rtc_lock;
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/*
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* RTC ops. By default, they point to weak no-op RTC functions.
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* rtc_mips_set_time - reverse the above translation and set time to RTC.
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* rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need
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* to be set. Used by RTC sync-up.
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*/
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extern int rtc_mips_set_time(unsigned long);
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extern int rtc_mips_set_mmss(unsigned long);
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/*
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* board specific routines required by time_init().
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*/
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extern void plat_time_init(void);
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/*
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* mips_hpt_frequency - must be set if you intend to use an R4k-compatible
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* counter as a timer interrupt source.
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*/
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extern unsigned int mips_hpt_frequency;
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/*
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* The performance counter IRQ on MIPS is a close relative to the timer IRQ
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* so it lives here.
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*/
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extern int (*perf_irq)(void);
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extern int __weak get_c0_perfcount_int(void);
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/*
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* Initialize the calling CPU's compare interrupt as clockevent device
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*/
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extern unsigned int get_c0_compare_int(void);
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extern int r4k_clockevent_init(void);
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static inline int mips_clockevent_init(void)
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{
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#ifdef CONFIG_CEVT_R4K
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return r4k_clockevent_init();
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#else
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return -ENXIO;
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#endif
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}
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/*
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* Initialize the count register as a clocksource
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*/
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extern int init_r4k_clocksource(void);
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static inline int init_mips_clocksource(void)
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{
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#ifdef CONFIG_CSRC_R4K
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return init_r4k_clocksource();
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#else
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return 0;
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#endif
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}
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static inline void clockevent_set_clock(struct clock_event_device *cd,
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unsigned int clock)
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{
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clockevents_calc_mult_shift(cd, clock, 4);
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}
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#endif /* _ASM_TIME_H */
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