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73 lines
1.6 KiB
73 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (C) 2001, 2002, MontaVista Software Inc. |
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* Author: Jun Sun, [email protected] or [email protected] |
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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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#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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* 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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