xref: /openbmc/linux/arch/mips/pci/fixup-lantiq.c (revision e23feb16)
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 }
41