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/*
* linux/arch/arm/mach-anakin/irq.c
*
* Copyright (C) 2001 Aleph One Ltd. for Acunia N.V.
*
* 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.
*
* Changelog:
* 10-Apr-2001 TTC Created
*/
#include <linux/ptrace.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <asm/irq.h>
#include <asm/mach/irq.h>
extern unsigned int anakin_irq_mask, anakin_active_irqs;
extern void do_IRQ(int, struct pt_regs *);
static void
anakin_mask_irq(unsigned int irq)
{
anakin_irq_mask &= ~(1 << irq);
}
static void
anakin_unmask_irq(unsigned int irq)
{
anakin_irq_mask |= (1 << irq);
}
/*
* This is a faked interrupt to deal with parallel interrupt requests
* on the Anakin. Make sure that its interrupt number is not in any
* way conflicting with the hardware interrupt numbers! Check
* IRQ_ANAKIN in linux/include/asm-arm/arch-anakin/irqs.h.
*/
static void
anakin_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
for (irq = 0; irq < NR_IRQS; irq++)
if (anakin_active_irqs & (1 << irq))
do_IRQ(irq, regs);
}
static struct irqaction anakin_irq = {
name: "Anakin IRQ",
handler: anakin_interrupt,
flags: SA_INTERRUPT
};
void __init
irq_init_irq(void)
{
unsigned int irq;
for (irq = 0; irq < NR_IRQS; irq++) {
switch (irq) {
case IRQ_UART0:
case IRQ_UART1:
case IRQ_UART2:
case IRQ_TICK:
case IRQ_CODEC:
case IRQ_UART4:
case IRQ_TOUCHSCREEN:
case IRQ_UART3:
case IRQ_FIFO:
case IRQ_CAN:
case IRQ_COMPACTFLASH:
case IRQ_BOSH:
case IRQ_ANAKIN:
irq_desc[irq].valid = 1;
irq_desc[irq].mask_ack = anakin_mask_irq;
irq_desc[irq].mask = anakin_mask_irq;
irq_desc[irq].unmask = anakin_unmask_irq;
}
}
setup_arm_irq(IRQ_ANAKIN, &anakin_irq);
}
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