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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * arch/arm/mach-ixp4xx/ixdpg425-pci.c
   4  *
   5  * PCI setup routines for Intel IXDPG425 Platform
   6  *
   7  * Copyright (C) 2004 MontaVista Softwrae, Inc.
   8  *
   9  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/pci.h>
  14 #include <linux/init.h>
  15 #include <linux/irq.h>
  16
  17 #include <asm/mach-types.h>
  18 #include <mach/hardware.h>
  19
  20 #include <asm/mach/pci.h>
  21
  22 #include "irqs.h"
  23
  24 void __init ixdpg425_pci_preinit(void)
  25 {
  26         irq_set_irq_type(IRQ_IXP4XX_GPIO6, IRQ_TYPE_LEVEL_LOW);
  27         irq_set_irq_type(IRQ_IXP4XX_GPIO7, IRQ_TYPE_LEVEL_LOW);
  28
  29         ixp4xx_pci_preinit();
  30 }
  31
  32 static int __init ixdpg425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  33 {
  34         if (slot == 12 || slot == 13)
  35                 return IRQ_IXP4XX_GPIO7;
  36         else if (slot == 14)
  37                 return IRQ_IXP4XX_GPIO6;
  38         else return -1;
  39 }
  40
  41 struct hw_pci ixdpg425_pci __initdata = {
  42         .nr_controllers = 1,
  43         .ops            = &ixp4xx_ops,
  44         .preinit =        ixdpg425_pci_preinit,
  45         .setup =          ixp4xx_setup,
  46         .map_irq =        ixdpg425_map_irq,
  47 };
  48
  49 int __init ixdpg425_pci_init(void)
  50 {
  51         if (machine_is_ixdpg425())
  52                 pci_common_init(&ixdpg425_pci);
  53         return 0;
  54 }
  55
  56 subsys_initcall(ixdpg425_pci_init);