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