1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/drivers/clocksource/dummy_timer.c
5 * Copyright (C) 2013 ARM Ltd.
8 #include <linux/clockchips.h>
10 #include <linux/init.h>
11 #include <linux/percpu.h>
12 #include <linux/cpumask.h>
14 static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);
16 static int dummy_timer_starting_cpu(unsigned int cpu)
18 struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);
20 evt->name = "dummy_timer";
21 evt->features = CLOCK_EVT_FEAT_PERIODIC |
22 CLOCK_EVT_FEAT_ONESHOT |
25 evt->cpumask = cpumask_of(cpu);
27 clockevents_register_device(evt);
31 static int __init dummy_timer_register(void)
33 return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
34 "clockevents/dummy_timer:starting",
35 dummy_timer_starting_cpu, NULL);
37 early_initcall(dummy_timer_register);