path: root/drivers/clocksource/arm_arch_timer.c

/*
 *  linux/drivers/clocksource/arm_arch_timer.c
 *
 *  Copyright (C) 2011 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.
 */

#define pr_fmt(fmt)	"arm_arch_timer: " fmt

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/smp.h>
#include <linux/cpu.h>
#include <linux/cpu_pm.h>
#include <linux/clockchips.h>
#include <linux/clocksource.h>
#include <linux/interrupt.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/sched/clock.h>
#include <linux/sched_clock.h>
#include <linux/acpi.h>

#include <asm/arch_timer.h>
#include <asm/virt.h>

#include <clocksource/arm_arch_timer.h>

#undef pr_fmt
#define pr_fmt(fmt) "arch_timer: " fmt

#define CNTTIDR		0x08
#define CNTTIDR_VIRT(n)	(BIT(1) << ((n) * 4))

#define CNTACR(n)	(0x40 + ((n) * 4))
#define CNTACR_RPCT	BIT(0)
#define CNTACR_RVCT	BIT(1)
#define CNTACR_RFRQ	BIT(2)
#define CNTACR_RVOFF	BIT(3)
#define CNTACR_RWVT	BIT(4)
#define CNTACR_RWPT	BIT(5)

#define CNTVCT_LO	0x08