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- /* arch/arm/mach-lh7a40x/irq-lh7a400.c
- *
- * Copyright (C) 2004 Coastal Environmental Systems
- *
- * 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.
- *
- */
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/interrupt.h>
- #include <linux/ptrace.h>
- #include <asm/hardware.h>
- #include <asm/irq.h>
- #include <asm/mach/irq.h>
- #include <asm/arch/irqs.h>
- #include "common.h"
- /* CPU IRQ handling */
- static void lh7a400_mask_irq (u32 irq)
- {
- INTC_INTENC = (1 << irq);
- }
- static void lh7a400_unmask_irq (u32 irq)
- {
- INTC_INTENS = (1 << irq);
- }
- static void lh7a400_ack_gpio_irq (u32 irq)
- {
- GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq));
- INTC_INTENC = (1 << irq);
- }
- static struct irq_chip lh7a400_internal_chip = {
- .name = "MPU",
- .ack = lh7a400_mask_irq, /* Level triggering -> mask is ack */
- .mask = lh7a400_mask_irq,
- .unmask = lh7a400_unmask_irq,
- };
- static struct irq_chip lh7a400_gpio_chip = {
- .name = "GPIO",
- .ack = lh7a400_ack_gpio_irq,
- .mask = lh7a400_mask_irq,
- .unmask = lh7a400_unmask_irq,
- };
- /* IRQ initialization */
- void __init lh7a400_init_irq (void)
- {
- int irq;
- INTC_INTENC = 0xffffffff; /* Disable all interrupts */
- GPIO_GPIOFINTEN = 0x00; /* Disable all GPIOF interrupts */
- barrier ();
- for (irq = 0; irq < NR_IRQS; ++irq) {
- switch (irq) {
- case IRQ_GPIO0INTR:
- case IRQ_GPIO1INTR:
- case IRQ_GPIO2INTR:
- case IRQ_GPIO3INTR:
- case IRQ_GPIO4INTR:
- case IRQ_GPIO5INTR:
- case IRQ_GPIO6INTR:
- case IRQ_GPIO7INTR:
- set_irq_chip (irq, &lh7a400_gpio_chip);
- set_irq_handler (irq, handle_level_irq); /* OK default */
- break;
- default:
- set_irq_chip (irq, &lh7a400_internal_chip);
- set_irq_handler (irq, handle_level_irq);
- }
- set_irq_flags (irq, IRQF_VALID);
- }
- lh7a40x_init_board_irq ();
- /* *** FIXME: the LH7a400 does use FIQ interrupts in some cases. For
- the time being, these are not initialized. */
- /* init_FIQ(); */
- }
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