arch/arm/mach-ixp4xx/wg302v2-pci.c

   1 /*
   2  * arch/arch/mach-ixp4xx/wg302v2-pci.c
   3  *
   4  * PCI setup routines for the Netgear WG302 v2 and WAG302 v2
   5  *
   6  * Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
   7  *
   8  * based on coyote-pci.c:
   9  *      Copyright (C) 2002 Jungo Software Technologies.
  10  *      Copyright (C) 2003 MontaVista Software, Inc.
  11  *
  12  * Maintainer: Imre Kaloz <kaloz@openwrt.org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  *
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/irq.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <mach/hardware.h>
  27
  28 #include <asm/mach/pci.h>
  29
  30 #include "irqs.h"
  31
  32 void __init wg302v2_pci_preinit(void)
  33 {
  34         irq_set_irq_type(IRQ_IXP4XX_GPIO8, IRQ_TYPE_LEVEL_LOW);
  35         irq_set_irq_type(IRQ_IXP4XX_GPIO9, IRQ_TYPE_LEVEL_LOW);
  36
  37         ixp4xx_pci_preinit();
  38 }
  39
  40 static int __init wg302v2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  41 {
  42         if (slot == 1)
  43                 return IRQ_IXP4XX_GPIO8;
  44         else if (slot == 2)
  45                 return IRQ_IXP4XX_GPIO9;
  46         else return -1;
  47 }
  48
  49 struct hw_pci wg302v2_pci __initdata = {
  50         .nr_controllers = 1,
  51         .ops = &ixp4xx_ops,
  52         .preinit =        wg302v2_pci_preinit,
  53         .setup =          ixp4xx_setup,
  54         .map_irq =        wg302v2_map_irq,
  55 };
  56
  57 int __init wg302v2_pci_init(void)
  58 {
  59         if (machine_is_wg302v2())
  60                 pci_common_init(&wg302v2_pci);
  61         return 0;
  62 }
  63
  64 subsys_initcall(wg302v2_pci_init);