forked from Minki/linux
a62e90308f
The previous nuc932 support patches have been discarded by me and because it belongs to another SoCs series named nuc93x,at present, which included nuc931 and nuc932, I think it is better to create a new mach-nuc93x,So I made the patch,and request your advice.Thanks! Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/*
|
|
* linux/arch/arm/mach-nuc93x/irq.c
|
|
*
|
|
* Copyright (c) 2008 Nuvoton technology corporation.
|
|
*
|
|
* 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;version 2 of the License.
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/sysdev.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/irq.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/regs-irq.h>
|
|
|
|
static void nuc93x_irq_mask(unsigned int irq)
|
|
{
|
|
__raw_writel(1 << irq, REG_AIC_MDCR);
|
|
}
|
|
|
|
/*
|
|
* By the w90p910 spec,any irq,only write 1
|
|
* to REG_AIC_EOSCR for ACK
|
|
*/
|
|
|
|
static void nuc93x_irq_ack(unsigned int irq)
|
|
{
|
|
__raw_writel(0x01, REG_AIC_EOSCR);
|
|
}
|
|
|
|
static void nuc93x_irq_unmask(unsigned int irq)
|
|
{
|
|
__raw_writel(1 << irq, REG_AIC_MECR);
|
|
|
|
}
|
|
|
|
static struct irq_chip nuc93x_irq_chip = {
|
|
.ack = nuc93x_irq_ack,
|
|
.mask = nuc93x_irq_mask,
|
|
.unmask = nuc93x_irq_unmask,
|
|
};
|
|
|
|
void __init nuc93x_init_irq(void)
|
|
{
|
|
int irqno;
|
|
|
|
__raw_writel(0xFFFFFFFE, REG_AIC_MDCR);
|
|
|
|
for (irqno = IRQ_WDT; irqno <= NR_IRQS; irqno++) {
|
|
set_irq_chip(irqno, &nuc93x_irq_chip);
|
|
set_irq_handler(irqno, handle_level_irq);
|
|
set_irq_flags(irqno, IRQF_VALID);
|
|
}
|
|
}
|