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/*
* arch/sh/boards/landisk/irq.c
*
* I-O DATA Device, Inc. LANDISK Support
*
* Copyright (C) 2005-2007 kogiidena
*
* Copyright (C) 2001 Ian da Silva, Jeremy Siegel
* Based largely on io_se.c.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <mach-landisk/mach/iodata_landisk.h>
static void disable_landisk_irq(unsigned int irq)
{
unsigned char mask = 0xff ^ (0x01 << (irq - 5));
__raw_writeb(__raw_readb(PA_IMASK) & mask, PA_IMASK);
}
static void enable_landisk_irq(unsigned int irq)
{
unsigned char value = (0x01 << (irq - 5));
__raw_writeb(__raw_readb(PA_IMASK) | value, PA_IMASK);
}
static struct irq_chip landisk_irq_chip __read_mostly = {
.name = "LANDISK",
.mask = disable_landisk_irq,
.unmask = enable_landisk_irq,
.mask_ack = disable_landisk_irq,
};
/*
* Initialize IRQ setting
*/
void __init init_landisk_IRQ(void)
{
int i;
for (i = 5; i < 14; i++) {
disable_irq_nosync(i);
set_irq_chip_and_handler_name(i, &landisk_irq_chip,
handle_level_irq, "level");
enable_landisk_irq(i);
}
__raw_writeb(0x00, PA_PWRINT_CLR);
}
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