mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 08:16:41 +07:00
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
|
/*
|
||
|
* linux/arch/arm/mach-w90x900/time.c
|
||
|
*
|
||
|
* Based on linux/arch/arm/plat-s3c24xx/time.c by Ben Dooks
|
||
|
*
|
||
|
* Copyright (c) 2008 Nuvoton technology corporation
|
||
|
* All rights reserved.
|
||
|
*
|
||
|
* Wan ZongShun <mcuos.com@gmail.com>
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License as published by
|
||
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
* (at your option) any later version.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
#include <linux/kernel.h>
|
||
|
#include <linux/sched.h>
|
||
|
#include <linux/init.h>
|
||
|
#include <linux/interrupt.h>
|
||
|
#include <linux/err.h>
|
||
|
#include <linux/clk.h>
|
||
|
#include <linux/io.h>
|
||
|
#include <linux/leds.h>
|
||
|
|
||
|
#include <asm/mach-types.h>
|
||
|
#include <asm/mach/irq.h>
|
||
|
#include <asm/mach/time.h>
|
||
|
|
||
|
#include <mach/map.h>
|
||
|
#include <mach/regs-timer.h>
|
||
|
|
||
|
static unsigned long w90x900_gettimeoffset(void)
|
||
|
{
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*IRQ handler for the timer*/
|
||
|
|
||
|
static irqreturn_t
|
||
|
w90x900_timer_interrupt(int irq, void *dev_id)
|
||
|
{
|
||
|
timer_tick();
|
||
|
__raw_writel(0x01, REG_TISR); /* clear TIF0 */
|
||
|
return IRQ_HANDLED;
|
||
|
}
|
||
|
|
||
|
static struct irqaction w90x900_timer_irq = {
|
||
|
.name = "w90x900 Timer Tick",
|
||
|
.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
|
||
|
.handler = w90x900_timer_interrupt,
|
||
|
};
|
||
|
|
||
|
/*Set up timer reg.*/
|
||
|
|
||
|
static void w90x900_timer_setup(void)
|
||
|
{
|
||
|
__raw_writel(0, REG_TCSR0);
|
||
|
__raw_writel(0, REG_TCSR1);
|
||
|
__raw_writel(0, REG_TCSR2);
|
||
|
__raw_writel(0, REG_TCSR3);
|
||
|
__raw_writel(0, REG_TCSR4);
|
||
|
__raw_writel(0x1F, REG_TISR);
|
||
|
__raw_writel(15000000/(100 * 100), REG_TICR0);
|
||
|
__raw_writel(0x68000063, REG_TCSR0);
|
||
|
}
|
||
|
|
||
|
static void __init w90x900_timer_init(void)
|
||
|
{
|
||
|
w90x900_timer_setup();
|
||
|
setup_irq(IRQ_TIMER0, &w90x900_timer_irq);
|
||
|
}
|
||
|
|
||
|
struct sys_timer w90x900_timer = {
|
||
|
.init = w90x900_timer_init,
|
||
|
.offset = w90x900_gettimeoffset,
|
||
|
.resume = w90x900_timer_setup
|
||
|
};
|