1/*
 2 * Copyright (C) 2001, 2002, MontaVista Software Inc.
 3 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
 4 * Copyright (c) 2003  Maciej W. Rozycki
 5 *
 6 * include/asm-mips/time.h
 7 *     header file for the new style time.c file and time services.
 8 *
 9 * This program is free software; you can redistribute	it and/or modify it
10 * under  the terms of	the GNU General	 Public License as published by the
11 * Free Software Foundation;  either version 2 of the  License, or (at your
12 * option) any later version.
13 */
14#ifndef _ASM_TIME_H
15#define _ASM_TIME_H
16
17#include <linux/rtc.h>
18#include <linux/spinlock.h>
19#include <linux/clockchips.h>
20#include <linux/clocksource.h>
21
22extern spinlock_t rtc_lock;
23
24/*
25 * RTC ops.  By default, they point to weak no-op RTC functions.
26 *	rtc_mips_set_time - reverse the above translation and set time to RTC.
27 *	rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need
28 *			to be set.  Used by RTC sync-up.
29 */
30extern int rtc_mips_set_time(unsigned long);
31extern int rtc_mips_set_mmss(unsigned long);
32
33/*
34 * board specific routines required by time_init().
35 */
36extern void plat_time_init(void);
37
38/*
39 * mips_hpt_frequency - must be set if you intend to use an R4k-compatible
40 * counter as a timer interrupt source.
41 */
42extern unsigned int mips_hpt_frequency;
43
44/*
45 * The performance counter IRQ on MIPS is a close relative to the timer IRQ
46 * so it lives here.
47 */
48extern int (*perf_irq)(void);
49extern int __weak get_c0_perfcount_int(void);
50
51/*
52 * Initialize the calling CPU's compare interrupt as clockevent device
53 */
54extern unsigned int get_c0_compare_int(void);
 
55extern int r4k_clockevent_init(void);
 
56
57static inline int mips_clockevent_init(void)
58{
59#ifdef CONFIG_CEVT_R4K
 
 
 
 
60	return r4k_clockevent_init();
61#else
62	return -ENXIO;
63#endif
64}
65
66/*
67 * Initialize the count register as a clocksource
68 */
 
69extern int init_r4k_clocksource(void);
 
70
71static inline int init_mips_clocksource(void)
72{
73#ifdef CONFIG_CSRC_R4K
74	return init_r4k_clocksource();
75#else
76	return 0;
77#endif
78}
79
80static inline void clockevent_set_clock(struct clock_event_device *cd,
81					unsigned int clock)
82{
83	clockevents_calc_mult_shift(cd, clock, 4);
84}
85
86#endif /* _ASM_TIME_H */

 1/*
 2 * Copyright (C) 2001, 2002, MontaVista Software Inc.
 3 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
 4 * Copyright (c) 2003  Maciej W. Rozycki
 5 *
 6 * include/asm-mips/time.h
 7 *     header file for the new style time.c file and time services.
 8 *
 9 * This program is free software; you can redistribute  it and/or modify it
10 * under  the terms of  the GNU General  Public License as published by the
11 * Free Software Foundation;  either version 2 of the  License, or (at your
12 * option) any later version.
13 */
14#ifndef _ASM_TIME_H
15#define _ASM_TIME_H
16
17#include <linux/rtc.h>
18#include <linux/spinlock.h>
19#include <linux/clockchips.h>
20#include <linux/clocksource.h>
21
22extern spinlock_t rtc_lock;
23
24/*
25 * RTC ops.  By default, they point to weak no-op RTC functions.
26 *	rtc_mips_set_time - reverse the above translation and set time to RTC.
27 *	rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need
28 *			to be set.  Used by RTC sync-up.
29 */
30extern int rtc_mips_set_time(unsigned long);
31extern int rtc_mips_set_mmss(unsigned long);
32
33/*
34 * board specific routines required by time_init().
35 */
36extern void plat_time_init(void);
37
38/*
39 * mips_hpt_frequency - must be set if you intend to use an R4k-compatible
40 * counter as a timer interrupt source.
41 */
42extern unsigned int mips_hpt_frequency;
43
44/*
45 * The performance counter IRQ on MIPS is a close relative to the timer IRQ
46 * so it lives here.
47 */
48extern int (*perf_irq)(void);
 
49
50/*
51 * Initialize the calling CPU's compare interrupt as clockevent device
52 */
53#ifdef CONFIG_CEVT_R4K_LIB
54extern unsigned int __weak get_c0_compare_int(void);
55extern int r4k_clockevent_init(void);
56#endif
57
58static inline int mips_clockevent_init(void)
59{
60#ifdef CONFIG_MIPS_MT_SMTC
61	extern int smtc_clockevent_init(void);
62
63	return smtc_clockevent_init();
64#elif defined(CONFIG_CEVT_R4K)
65	return r4k_clockevent_init();
66#else
67	return -ENXIO;
68#endif
69}
70
71/*
72 * Initialize the count register as a clocksource
73 */
74#ifdef CONFIG_CSRC_R4K_LIB
75extern int init_r4k_clocksource(void);
76#endif
77
78static inline int init_mips_clocksource(void)
79{
80#ifdef CONFIG_CSRC_R4K
81	return init_r4k_clocksource();
82#else
83	return 0;
84#endif
85}
86
87static inline void clockevent_set_clock(struct clock_event_device *cd,
88					unsigned int clock)
89{
90	clockevents_calc_mult_shift(cd, clock, 4);
91}
92
93#endif /* _ASM_TIME_H */