1/* 2 * arch/arm/mach-ixp4xx/gtwx5715-pci.c 3 * 4 * Gemtek GTWX5715 (Linksys WRV54G) board setup 5 * 6 * Copyright (C) 2004 George T. Joseph 7 * Derived from Coyote 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 2 12 * of the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 * 23 */ 24 25#include <linux/pci.h> 26#include <linux/init.h> 27#include <linux/delay.h> 28#include <linux/irq.h> 29#include <asm/mach-types.h> 30#include <mach/hardware.h> 31#include <asm/mach/pci.h> 32 33#define SLOT0_DEVID 0 34#define SLOT1_DEVID 1 35#define INTA 10 /* slot 1 has INTA and INTB crossed */ 36#define INTB 11 37 38/* 39 * Slot 0 isn't actually populated with a card connector but 40 * we initialize it anyway in case a future version has the 41 * slot populated or someone with good soldering skills has 42 * some free time. 43 */ 44void __init gtwx5715_pci_preinit(void) 45{ 46 set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); 47 set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); 48 ixp4xx_pci_preinit(); 49} 50 51 52static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin) 53{ 54 int rc = -1; 55 56 if ((slot == SLOT0_DEVID && pin == 1) || 57 (slot == SLOT1_DEVID && pin == 2)) 58 rc = IXP4XX_GPIO_IRQ(INTA); 59 else if ((slot == SLOT0_DEVID && pin == 2) || 60 (slot == SLOT1_DEVID && pin == 1)) 61 rc = IXP4XX_GPIO_IRQ(INTB); 62 63 printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n", 64 __func__, slot, pin, rc); 65 return rc; 66} 67 68struct hw_pci gtwx5715_pci __initdata = { 69 .nr_controllers = 1, 70 .preinit = gtwx5715_pci_preinit, 71 .swizzle = pci_std_swizzle, 72 .setup = ixp4xx_setup, 73 .scan = ixp4xx_scan_bus, 74 .map_irq = gtwx5715_map_irq, 75}; 76 77int __init gtwx5715_pci_init(void) 78{ 79 if (machine_is_gtwx5715()) 80 pci_common_init(>wx5715_pci); 81 82 return 0; 83} 84 85subsys_initcall(gtwx5715_pci_init); 86