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// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/kernel/arch_timer.c
*
* Copyright (C) 2011 ARM Ltd.
* All Rights Reserved
*/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <asm/delay.h>
#include <asm/arch_timer.h>
#include <clocksource/arm_arch_timer.h>
static unsigned long arch_timer_read_counter_long(void)
{
return arch_timer_read_counter();
}
static struct delay_timer arch_delay_timer;
static void __init arch_timer_delay_timer_register(void)
{
/* Use the architected timer for the delay loop. */
arch_delay_timer.read_current_timer = arch_timer_read_counter_long;
arch_delay_timer.freq = arch_timer_get_rate();
register_current_timer_delay(&arch_delay_timer);
}
int __init arch_timer_arch_init(void)
{
u32 arch_timer_rate = arch_timer_get_rate();
if (arch_timer_rate == 0)
return -ENXIO;
arch_timer_delay_timer_register();
return 0;
}
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