You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
1.5 KiB
66 lines
1.5 KiB
/*
|
|
* Dummy local timer
|
|
*
|
|
* Copyright (C) 2008 Paul Mundt
|
|
*
|
|
* cloned from:
|
|
*
|
|
* linux/arch/arm/mach-realview/localtimer.c
|
|
*
|
|
* Copyright (C) 2002 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/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/device.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/percpu.h>
|
|
#include <linux/clockchips.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/irq.h>
|
|
|
|
static DEFINE_PER_CPU(struct clock_event_device, local_clockevent);
|
|
|
|
/*
|
|
* Used on SMP for either the local timer or SMP_MSG_TIMER
|
|
*/
|
|
void local_timer_interrupt(void)
|
|
{
|
|
struct clock_event_device *clk = &__get_cpu_var(local_clockevent);
|
|
|
|
irq_enter();
|
|
clk->event_handler(clk);
|
|
irq_exit();
|
|
}
|
|
|
|
static void dummy_timer_set_mode(enum clock_event_mode mode,
|
|
struct clock_event_device *clk)
|
|
{
|
|
}
|
|
|
|
void local_timer_setup(unsigned int cpu)
|
|
{
|
|
struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
|
|
|
|
clk->name = "dummy_timer";
|
|
clk->features = CLOCK_EVT_FEAT_ONESHOT |
|
|
CLOCK_EVT_FEAT_PERIODIC |
|
|
CLOCK_EVT_FEAT_DUMMY;
|
|
clk->rating = 400;
|
|
clk->mult = 1;
|
|
clk->set_mode = dummy_timer_set_mode;
|
|
clk->broadcast = smp_timer_broadcast;
|
|
clk->cpumask = cpumask_of(cpu);
|
|
|
|
clockevents_register_device(clk);
|
|
}
|
|
|
|
void local_timer_stop(unsigned int cpu)
|
|
{
|
|
}
|
|
|