Merge branch 'devel'
[sfrench/cifs-2.6.git] / arch / sh / kernel / timers / timer-broadcast.c
1 /*
2  * Dummy local timer
3  *
4  * Copyright (C) 2008  Paul Mundt
5  *
6  * cloned from:
7  *
8  *  linux/arch/arm/mach-realview/localtimer.c
9  *
10  *  Copyright (C) 2002 ARM Ltd.
11  *  All Rights Reserved
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License version 2 as
15  * published by the Free Software Foundation.
16  */
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/delay.h>
20 #include <linux/device.h>
21 #include <linux/smp.h>
22 #include <linux/jiffies.h>
23 #include <linux/percpu.h>
24 #include <linux/clockchips.h>
25 #include <linux/irq.h>
26
27 static DEFINE_PER_CPU(struct clock_event_device, local_clockevent);
28
29 /*
30  * Used on SMP for either the local timer or SMP_MSG_TIMER
31  */
32 void local_timer_interrupt(void)
33 {
34         struct clock_event_device *clk = &__get_cpu_var(local_clockevent);
35
36         clk->event_handler(clk);
37 }
38
39 static void dummy_timer_set_mode(enum clock_event_mode mode,
40                                  struct clock_event_device *clk)
41 {
42 }
43
44 void __cpuinit local_timer_setup(unsigned int cpu)
45 {
46         struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
47
48         clk->name               = "dummy_timer";
49         clk->features           = CLOCK_EVT_FEAT_DUMMY;
50         clk->rating             = 200;
51         clk->mult               = 1;
52         clk->set_mode           = dummy_timer_set_mode;
53         clk->broadcast          = smp_timer_broadcast;
54         clk->cpumask            = cpumask_of(cpu);
55
56         clockevents_register_device(clk);
57 }