/* * arch/arm/mach-ixp4xx/gtwx5715-pci.c * * Gemtek GTWX5715 (Linksys WRV54G) board setup * * Copyright (C) 2004 George T. Joseph * Derived from Coyote * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. * */#include <linux/pci.h>#include <linux/init.h>#include <linux/delay.h>#include <asm/mach-types.h>#include <asm/hardware.h>#include <asm/irq.h>#include <asm/arch/gtwx5715.h>#include <asm/mach/pci.h>extern void ixp4xx_pci_preinit(void);extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);/* * The exact GPIO pins and IRQs are defined in arch-ixp4xx/gtwx5715.h * Slot 0 isn't actually populated with a card connector but * we initialize it anyway in case a future version has the * slot populated or someone with good soldering skills has * some free time. */void __init gtwx5715_pci_preinit(void){	set_irq_type(GTWX5715_PCI_SLOT0_INTA_IRQ, IRQT_LOW);	set_irq_type(GTWX5715_PCI_SLOT0_INTB_IRQ, IRQT_LOW);	set_irq_type(GTWX5715_PCI_SLOT1_INTA_IRQ, IRQT_LOW);	set_irq_type(GTWX5715_PCI_SLOT1_INTB_IRQ, IRQT_LOW);	ixp4xx_pci_preinit();}static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin){	int rc;	static int gtwx5715_irqmap			[GTWX5715_PCI_SLOT_COUNT]			[GTWX5715_PCI_INT_PIN_COUNT] = {	{GTWX5715_PCI_SLOT0_INTA_IRQ, GTWX5715_PCI_SLOT0_INTB_IRQ},	{GTWX5715_PCI_SLOT1_INTA_IRQ, GTWX5715_PCI_SLOT1_INTB_IRQ},};	if (slot >= GTWX5715_PCI_SLOT_COUNT ||			pin >= GTWX5715_PCI_INT_PIN_COUNT) rc = -1;	else		rc = gtwx5715_irqmap[slot][pin-1];	printk("%s: Mapped slot %d pin %d to IRQ %d\n", __FUNCTION__,slot, pin, rc);	return(rc);}struct hw_pci gtwx5715_pci __initdata = {	.nr_controllers = 1,	.preinit =        gtwx5715_pci_preinit,	.swizzle =        pci_std_swizzle,	.setup =          ixp4xx_setup,	.scan =           ixp4xx_scan_bus,	.map_irq =        gtwx5715_map_irq,};int __init gtwx5715_pci_init(void){	if (machine_is_gtwx5715())	{		pci_common_init(&gtwx5715_pci);	}	return 0;}subsys_initcall(gtwx5715_pci_init);