arch/mips/pci/fixup-lantiq.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify it
   3  *  under the terms of the GNU General Public License version 2 as published
   4  *  by the Free Software Foundation.
   5  *
   6  *  Copyright (C) 2012 John Crispin <blogic@openwrt.org>
   7  */
   8
   9 #include <linux/of_irq.h>
  10 #include <linux/of_pci.h>
  11
  12 int (*ltq_pci_plat_arch_init)(struct pci_dev *dev) = NULL;
  13 int (*ltq_pci_plat_dev_init)(struct pci_dev *dev) = NULL;
  14
  15 int pcibios_plat_dev_init(struct pci_dev *dev)
  16 {
  17         if (ltq_pci_plat_arch_init)
  18                 return ltq_pci_plat_arch_init(dev);
  19
  20         if (ltq_pci_plat_dev_init)
  21                 return ltq_pci_plat_dev_init(dev);
  22
  23         return 0;
  24 }
  25
  26 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  27 {
  28         struct of_irq dev_irq;
  29         int irq;
  30
  31         if (of_irq_map_pci(dev, &dev_irq)) {
  32                 dev_err(&dev->dev, "trying to map irq for unknown slot:%d pin:%d\n",
  33                         slot, pin);
  34                 return 0;
  35         }
  36         irq = irq_create_of_mapping(dev_irq.controller, dev_irq.specifier,
  37                                         dev_irq.size);
  38         dev_info(&dev->dev, "SLOT:%d PIN:%d IRQ:%d\n", slot, pin, irq);
  39         return irq;
  40 }