arch/arm/mach-ixp4xx/ixdpg425-pci.c

   1 /*
   2  * arch/arm/mach-ixp4xx/ixdpg425-pci.c
   3  *
   4  * PCI setup routines for Intel IXDPG425 Platform
   5  *
   6  * Copyright (C) 2004 MontaVista Softwrae, Inc.
   7  *
   8  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/pci.h>
  18 #include <linux/init.h>
  19 #include <linux/irq.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <mach/hardware.h>
  23
  24 #include <asm/mach/pci.h>
  25
  26 void __init ixdpg425_pci_preinit(void)
  27 {
  28         set_irq_type(IRQ_IXP4XX_GPIO6, IRQ_TYPE_LEVEL_LOW);
  29         set_irq_type(IRQ_IXP4XX_GPIO7, IRQ_TYPE_LEVEL_LOW);
  30
  31         ixp4xx_pci_preinit();
  32 }
  33
  34 static int __init ixdpg425_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  35 {
  36         if (slot == 12 || slot == 13)
  37                 return IRQ_IXP4XX_GPIO7;
  38         else if (slot == 14)
  39                 return IRQ_IXP4XX_GPIO6;
  40         else return -1;
  41 }
  42
  43 struct hw_pci ixdpg425_pci __initdata = {
  44         .nr_controllers = 1,
  45         .preinit =        ixdpg425_pci_preinit,
  46         .swizzle =        pci_std_swizzle,
  47         .setup =          ixp4xx_setup,
  48         .scan =           ixp4xx_scan_bus,
  49         .map_irq =        ixdpg425_map_irq,
  50 };
  51
  52 int __init ixdpg425_pci_init(void)
  53 {
  54         if (machine_is_ixdpg425())
  55                 pci_common_init(&ixdpg425_pci);
  56         return 0;
  57 }
  58
  59 subsys_initcall(ixdpg425_pci_init);