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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
06470651 MR |
2 | /* |
3 | * linux/drivers/clocksource/dummy_timer.c | |
4 | * | |
5 | * Copyright (C) 2013 ARM Ltd. | |
6 | * All Rights Reserved | |
06470651 MR |
7 | */ |
8 | #include <linux/clockchips.h> | |
9 | #include <linux/cpu.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/percpu.h> | |
12 | #include <linux/cpumask.h> | |
13 | ||
14 | static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt); | |
15 | ||
00c1d17a | 16 | static int dummy_timer_starting_cpu(unsigned int cpu) |
06470651 | 17 | { |
00c1d17a | 18 | struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu); |
06470651 MR |
19 | |
20 | evt->name = "dummy_timer"; | |
21 | evt->features = CLOCK_EVT_FEAT_PERIODIC | | |
22 | CLOCK_EVT_FEAT_ONESHOT | | |
23 | CLOCK_EVT_FEAT_DUMMY; | |
24 | evt->rating = 100; | |
06470651 MR |
25 | evt->cpumask = cpumask_of(cpu); |
26 | ||
27 | clockevents_register_device(evt); | |
00c1d17a | 28 | return 0; |
06470651 MR |
29 | } |
30 | ||
06470651 MR |
31 | static int __init dummy_timer_register(void) |
32 | { | |
00c1d17a | 33 | return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING, |
73c1b41e | 34 | "clockevents/dummy_timer:starting", |
00c1d17a | 35 | dummy_timer_starting_cpu, NULL); |
06470651 MR |
36 | } |
37 | early_initcall(dummy_timer_register); |