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-rw-r--r--arch/sh/kernel/localtimer.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/sh/kernel/localtimer.c b/arch/sh/kernel/localtimer.c
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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
27static 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 */
32void local_timer_interrupt(void)
33{
34 struct clock_event_device *clk = &__get_cpu_var(local_clockevent);
35
36 clk->event_handler(clk);
37}
38
39static void dummy_timer_set_mode(enum clock_event_mode mode,
40 struct clock_event_device *clk)
41{
42}
43
44void __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}