arch/arm/mach-ixp4xx/gateway7001-pci.c

   1 /*
   2  * arch/arch/mach-ixp4xx/gateway7001-pci.c
   3  *
   4  * PCI setup routines for Gateway 7001
   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 Softwrae, 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 void __init gateway7001_pci_preinit(void)
  31 {
  32         irq_set_irq_type(IRQ_IXP4XX_GPIO10, IRQ_TYPE_LEVEL_LOW);
  33         irq_set_irq_type(IRQ_IXP4XX_GPIO11, IRQ_TYPE_LEVEL_LOW);
  34
  35         ixp4xx_pci_preinit();
  36 }
  37
  38 static int __init gateway7001_map_irq(const struct pci_dev *dev, u8 slot,
  39         u8 pin)
  40 {
  41         if (slot == 1)
  42                 return IRQ_IXP4XX_GPIO11;
  43         else if (slot == 2)
  44                 return IRQ_IXP4XX_GPIO10;
  45         else return -1;
  46 }
  47
  48 struct hw_pci gateway7001_pci __initdata = {
  49         .nr_controllers = 1,
  50         .preinit =        gateway7001_pci_preinit,
  51         .swizzle =        pci_std_swizzle,
  52         .setup =          ixp4xx_setup,
  53         .scan =           ixp4xx_scan_bus,
  54         .map_irq =        gateway7001_map_irq,
  55 };
  56
  57 int __init gateway7001_pci_init(void)
  58 {
  59         if (machine_is_gateway7001())
  60                 pci_common_init(&gateway7001_pci);
  61         return 0;
  62 }
  63
  64 subsys_initcall(gateway7001_pci_init);