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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243// 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;}