2 * arch/arm/mach-ixp4xx/gtwx5715-pci.c
4 * Gemtek GTWX5715 (Linksys WRV54G) board setup
6 * Copyright (C) 2004 George T. Joseph
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.
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.
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.
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>
42 #define INT_PIN_COUNT 2
45 * Slot 0 isn't actually populated with a card connector but
46 * we initialize it anyway in case a future version has the
47 * slot populated or someone with good soldering skills has
50 void __init gtwx5715_pci_preinit(void)
52 set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
53 set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTB), IRQ_TYPE_LEVEL_LOW);
54 set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
55 set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTB), IRQ_TYPE_LEVEL_LOW);
60 static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
63 static int gtwx5715_irqmap[SLOT_COUNT][INT_PIN_COUNT] = {
64 {IXP4XX_GPIO_IRQ(SLOT0_INTA), IXP4XX_GPIO_IRQ(SLOT0_INTB)},
65 {IXP4XX_GPIO_IRQ(SLOT1_INTA), IXP4XX_GPIO_IRQ(SLOT1_INTB)},
68 if (slot >= SLOT_COUNT || pin >= INT_PIN_COUNT)
71 rc = gtwx5715_irqmap[slot][pin - 1];
73 printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n",
74 __func__, slot, pin, rc);
78 struct hw_pci gtwx5715_pci __initdata = {
80 .preinit = gtwx5715_pci_preinit,
81 .swizzle = pci_std_swizzle,
82 .setup = ixp4xx_setup,
83 .scan = ixp4xx_scan_bus,
84 .map_irq = gtwx5715_map_irq,
87 int __init gtwx5715_pci_init(void)
89 if (machine_is_gtwx5715())
90 pci_common_init(>wx5715_pci);
95 subsys_initcall(gtwx5715_pci_init);