linux/arch/arm/mach-nuc93x/irq.c
wanzongshun a62e90308f ARM: 5859/1: Add nuc93x platform support
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>
2010-01-27 22:03:00 +00:00

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);
}
}