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8c24594d PM |
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; | |
320ab2b0 | 54 | clk->cpumask = cpumask_of(cpu); |
8c24594d PM |
55 | |
56 | clockevents_register_device(clk); | |
57 | } |