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[ARM] 4534/1: AT91x40 interrupt support

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Interrupt setup support for the Atmel AT91x40 CPU family.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Greg Ungerer 2007-07-30 02:38:57 +01:00 committed by Russell King
parent 699a714501
commit eb1d65aa1b
1 changed files with 67 additions and 0 deletions
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67
arch/arm/mach-at91/at91x40.c Normal file
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/*
* arch/arm/mach-at91/at91x40.c
*
* (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
* Copyright (C) 2005 SAN People
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <asm/mach/arch.h>
#include <asm/arch/at91x40.h>
#include <asm/arch/at91_st.h>
#include "generic.h"
/*
* This is used in the gpio code, stub locally.
*/
int clk_enable(struct clk *clk)
{
return 0;
}
void __init at91x40_initialize(unsigned long main_clock)
{
at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)
| (1 << AT91X40_ID_IRQ2);
}
/*
* The default interrupt priority levels (0 = lowest, 7 = highest).
*/
static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = {
7, /* Advanced Interrupt Controller (FIQ) */
0, /* System Peripherals */
0, /* USART 0 */
0, /* USART 1 */
2, /* Timer Counter 0 */
2, /* Timer Counter 1 */
2, /* Timer Counter 2 */
0, /* Watchdog timer */
0, /* Parallel IO Controller A */
0, /* Reserved */
0, /* Reserved */
0, /* Reserved */
0, /* Reserved */
0, /* Reserved */
0, /* Reserved */
0, /* Reserved */
0, /* External IRQ0 */
0, /* External IRQ1 */
0, /* External IRQ2 */
};
void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])
{
if (!priority)
priority = at91x40_default_irq_priority;
at91_aic_init(priority);
}