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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * arch/arch/mach-ixp4xx/wg302v2-pci.c
   4  *
   5  * PCI setup routines for the Netgear WG302 v2 and WAG302 v2
   6  *
   7  * Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
   8  *
   9  * based on coyote-pci.c:
  10  *      Copyright (C) 2002 Jungo Software Technologies.
  11  *      Copyright (C) 2003 MontaVista Software, Inc.
  12  *
  13  * Maintainer: Imre Kaloz <kaloz@openwrt.org>
  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 #include "irqs.h"
  27
  28 void __init wg302v2_pci_preinit(void)
  29 {
  30         irq_set_irq_type(IRQ_IXP4XX_GPIO8, IRQ_TYPE_LEVEL_LOW);
  31         irq_set_irq_type(IRQ_IXP4XX_GPIO9, IRQ_TYPE_LEVEL_LOW);
  32
  33         ixp4xx_pci_preinit();
  34 }
  35
  36 static int __init wg302v2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  37 {
  38         if (slot == 1)
  39                 return IRQ_IXP4XX_GPIO8;
  40         else if (slot == 2)
  41                 return IRQ_IXP4XX_GPIO9;
  42         else return -1;
  43 }
  44
  45 struct hw_pci wg302v2_pci __initdata = {
  46         .nr_controllers = 1,
  47         .ops = &ixp4xx_ops,
  48         .preinit =        wg302v2_pci_preinit,
  49         .setup =          ixp4xx_setup,
  50         .map_irq =        wg302v2_map_irq,
  51 };
  52
  53 int __init wg302v2_pci_init(void)
  54 {
  55         if (machine_is_wg302v2())
  56                 pci_common_init(&wg302v2_pci);
  57         return 0;
  58 }
  59
  60 subsys_initcall(wg302v2_pci_init);