linux-imx

/*

 *  linux/drivers/clocksource/dummy_timer.c

 *

 *  Copyright (C) 2013 ARM Ltd.

 *  All Rights Reserved

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#include <linux/clockchips.h>

#include <linux/cpu.h>

#include <linux/init.h>

#include <linux/percpu.h>

#include <linux/cpumask.h>

​

static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);

​

static int dummy_timer_starting_cpu(unsigned int cpu)

{

    struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);

​

    evt->name   = "dummy_timer";

    evt->features   = CLOCK_EVT_FEAT_PERIODIC |

              CLOCK_EVT_FEAT_ONESHOT |

              CLOCK_EVT_FEAT_DUMMY;

    evt->rating = 100;

    evt->cpumask    = cpumask_of(cpu);

​

    clockevents_register_device(evt);

    return 0;

}

​

static int __init dummy_timer_register(void)

{

    return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,

                 "clockevents/dummy_timer:starting",

                 dummy_timer_starting_cpu, NULL);

}

early_initcall(dummy_timer_register);