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/*
* linux/arch/arm/mach-clps711x/irq.c
*
* Copyright (C) 2000 Deep Blue Solutions Ltd.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/list.h>
#include <asm/mach/irq.h>
#include <mach/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/hardware/clps7111.h>
static void int1_mask(unsigned int irq)
{
u32 intmr1;
intmr1 = clps_readl(INTMR1);
intmr1 &= ~(1 << irq);
clps_writel(intmr1, INTMR1);
}
static void int1_ack(unsigned int irq)
{
u32 intmr1;
intmr1 = clps_readl(INTMR1);
intmr1 &= ~(1 << irq);
clps_writel(intmr1, INTMR1);
switch (irq) {
case IRQ_CSINT: clps_writel(0, COEOI); break;
case IRQ_TC1OI: clps_writel(0, TC1EOI); break;
case IRQ_TC2OI: clps_writel(0, TC2EOI); break;
case IRQ_RTCMI: clps_writel(0, RTCEOI); break;
case IRQ_TINT: clps_writel(0, TEOI); break;
case IRQ_UMSINT: clps_writel(0, UMSEOI); break;
}
}
static void int1_unmask(unsigned int irq)
{
u32 intmr1;
intmr1 = clps_readl(INTMR1);
intmr1 |= 1 << irq;
clps_writel(intmr1, INTMR1);
}
static struct irq_chip int1_chip = {
.ack = int1_ack,
.mask = int1_mask,
.unmask = int1_unmask,
};
static void int2_mask(unsigned int irq)
{
u32 intmr2;
intmr2 = clps_readl(INTMR2);
intmr2 &= ~(1 << (irq - 16));
clps_writel(intmr2, INTMR2);
}
static void int2_ack(unsigned int irq)
{
u32 intmr2;
intmr2 = clps_readl(INTMR2);
intmr2 &= ~(1 << (irq - 16));
clps_writel(intmr2, INTMR2);
switch (irq) {
case IRQ_KBDINT: clps_writel(0, KBDEOI); break;
}
}
static void int2_unmask(unsigned int irq)
{
u32 intmr2;
intmr2 = clps_readl(INTMR2);
intmr2 |= 1 << (irq - 16);
clps_writel(intmr2, INTMR2);
}
static struct irq_chip int2_chip = {
.ack = int2_ack,
.mask = int2_mask,
.unmask = int2_unmask,
};
void __init clps711x_init_irq(void)
{
unsigned int i;
for (i = 0; i < NR_IRQS; i++) {
if (INT1_IRQS & (1 << i)) {
set_irq_handler(i, handle_level_irq);
set_irq_chip(i, &int1_chip);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
}
if (INT2_IRQS & (1 << i)) {
set_irq_handler(i, handle_level_irq);
set_irq_chip(i, &int2_chip);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
}
}
/*
* Disable interrupts
*/
clps_writel(0, INTMR1);
clps_writel(0, INTMR2);
/*
* Clear down any pending interrupts
*/
clps_writel(0, COEOI);
clps_writel(0, TC1EOI);
clps_writel(0, TC2EOI);
clps_writel(0, RTCEOI);
clps_writel(0, TEOI);
clps_writel(0, UMSEOI);
clps_writel(0, SYNCIO);
clps_writel(0, KBDEOI);
}
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