/* * 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/config.h>#include <linux/init.h>#include <linux/irq.h>#include <asm/io.h>#include <asm/irq.h>#include <asm/rts7751r2d/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};#elsestatic int mask_pos[] = {6, 11, 9, 8, 12, 10, 5, 4, 7, 14, 13, 0, 0, 0, 0};#endifextern int voyagergx_irq_demux(int irq);extern void setup_voyagergx_irq(void);static void enable_rts7751r2d_irq(unsigned int irq);static void disable_rts7751r2d_irq(unsigned int irq);/* shutdown is same as "disable" */#define shutdown_rts7751r2d_irq disable_rts7751r2d_irqstatic void ack_rts7751r2d_irq(unsigned int irq);static void end_rts7751r2d_irq(unsigned int irq);static unsigned int startup_rts7751r2d_irq(unsigned int irq){	enable_rts7751r2d_irq(irq);	return 0; /* never anything pending */}static void disable_rts7751r2d_irq(unsigned int irq){	unsigned long flags;	unsigned short val;	unsigned short mask = 0xffff ^ (0x0001 << mask_pos[irq]);	/* Set the priority in IPR to 0 */	local_irq_save(flags);	val = ctrl_inw(IRLCNTR1);	val &= mask;	ctrl_outw(val, IRLCNTR1);	local_irq_restore(flags);}static void enable_rts7751r2d_irq(unsigned int irq){	unsigned long flags;	unsigned short val;	unsigned short value = (0x0001 << mask_pos[irq]);	/* Set priority in IPR back to original value */	local_irq_save(flags);	val = ctrl_inw(IRLCNTR1);	val |= value;	ctrl_outw(val, IRLCNTR1);	local_irq_restore(flags);}int rts7751r2d_irq_demux(int irq){	int demux_irq;	demux_irq = voyagergx_irq_demux(irq);	return demux_irq;}static void ack_rts7751r2d_irq(unsigned int irq){	disable_rts7751r2d_irq(irq);}static void end_rts7751r2d_irq(unsigned int irq){	if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))		enable_rts7751r2d_irq(irq);}static struct hw_interrupt_type rts7751r2d_irq_type = {	"RTS7751R2D IRQ",	startup_rts7751r2d_irq,	shutdown_rts7751r2d_irq,	enable_rts7751r2d_irq,	disable_rts7751r2d_irq,	ack_rts7751r2d_irq,	end_rts7751r2d_irq,};static void make_rts7751r2d_irq(unsigned int irq){	disable_irq_nosync(irq);	irq_desc[irq].handler = &rts7751r2d_irq_type;	disable_rts7751r2d_irq(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++)		make_rts7751r2d_irq(i);	setup_voyagergx_irq();}