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/*
* linux/arch/sh/boards/renesas/rts7751r2d/irq.c
*
* Copyright (C) 2000 Kazumoto Kojima
*
* Renesas Technology Sales RTS7751R2D Support.
*
* Modified for RTS7751R2D by
* Atom Create Engineering Co., Ltd. 2002.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/voyagergx.h>
#include <asm/rts7751r2d.h>
#if defined(CONFIG_RTS7751R2D_REV11)
static int mask_pos[] = {11, 9, 8, 12, 10, 6, 5, 4, 7, 14, 13, 0, 0, 0, 0};
#else
static int mask_pos[] = {6, 11, 9, 8, 12, 10, 5, 4, 7, 14, 13, 0, 0, 0, 0};
#endif
static void enable_rts7751r2d_irq(unsigned int irq)
{
/* Set priority in IPR back to original value */
ctrl_outw(ctrl_inw(IRLCNTR1) | (1 << mask_pos[irq]), IRLCNTR1);
}
static void disable_rts7751r2d_irq(unsigned int irq)
{
/* Set the priority in IPR to 0 */
ctrl_outw(ctrl_inw(IRLCNTR1) & (0xffff ^ (1 << mask_pos[irq])),
IRLCNTR1);
}
int rts7751r2d_irq_demux(int irq)
{
return irq;
}
static struct irq_chip rts7751r2d_irq_chip __read_mostly = {
.name = "rts7751r2d",
.mask = disable_rts7751r2d_irq,
.unmask = enable_rts7751r2d_irq,
.mask_ack = disable_rts7751r2d_irq,
};
/*
* Initialize IRQ setting
*/
void __init init_rts7751r2d_IRQ(void)
{
int i;
/* IRL0=KEY Input
* IRL1=Ethernet
* IRL2=CF Card
* IRL3=CF Card Insert
* IRL4=PCMCIA
* IRL5=VOYAGER
* IRL6=RTC Alarm
* IRL7=RTC Timer
* IRL8=SD Card
* IRL9=PCI Slot #1
* IRL10=PCI Slot #2
* IRL11=Extention #0
* IRL12=Extention #1
* IRL13=Extention #2
* IRL14=Extention #3
*/
for (i=0; i<15; i++) {
disable_irq_nosync(i);
set_irq_chip_and_handler_name(i, &rts7751r2d_irq_chip,
handle_level_irq, "level");
enable_rts7751r2d_irq(i);
}
setup_voyagergx_irq();
}
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