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