release/src-rt-6.x.4708/linux/linux-2.6.36/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 void __init wg302v2_pci_preinit(void)
  31 {
  32         set_irq_type(IRQ_IXP4XX_GPIO8, IRQ_TYPE_LEVEL_LOW);
  33         set_irq_type(IRQ_IXP4XX_GPIO9, IRQ_TYPE_LEVEL_LOW);
  34
  35         ixp4xx_pci_preinit();
  36 }
  37
  38 static int __init wg302v2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  39 {
  40         if (slot == 1)
  41                 return IRQ_IXP4XX_GPIO8;
  42         else if (slot == 2)
  43                 return IRQ_IXP4XX_GPIO9;
  44         else return -1;
  45 }
  46
  47 struct hw_pci wg302v2_pci __initdata = {
  48         .nr_controllers = 1,
  49         .preinit =        wg302v2_pci_preinit,
  50         .swizzle =        pci_std_swizzle,
  51         .setup =          ixp4xx_setup,
  52         .scan =           ixp4xx_scan_bus,
  53         .map_irq =        wg302v2_map_irq,
  54 };
  55
  56 int __init wg302v2_pci_init(void)
  57 {
  58         if (machine_is_wg302v2())
  59                 pci_common_init(&wg302v2_pci);
  60         return 0;
  61 }
  62
  63 subsys_initcall(wg302v2_pci_init);