arm64: dts: Revert "specify console via command line"
[linux/fpc-iii.git] / arch / mips / pci / fixup-rbtx4938.c
blobff22a22db73ee618a30cb7af4e906ce060da7d92
1 /*
2 * Toshiba rbtx4938 pci routines
3 * Copyright (C) 2000-2001 Toshiba Corporation
5 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
6 * terms of the GNU General Public License version 2. This program is
7 * licensed "as is" without any warranty of any kind, whether express
8 * or implied.
10 * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
12 #include <linux/types.h>
13 #include <asm/txx9/pci.h>
14 #include <asm/txx9/rbtx4938.h>
16 int rbtx4938_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
18 int irq = tx4938_pcic1_map_irq(dev, slot);
20 if (irq >= 0)
21 return irq;
22 irq = pin;
23 /* IRQ rotation */
24 irq--; /* 0-3 */
25 if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
26 /* PCI CardSlot (IDSEL=A23) */
27 /* PCIA => PCIA (IDSEL=A23) */
28 irq = (irq + 0 + slot) % 4;
29 } else {
30 /* PCI Backplane */
31 if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
32 irq = (irq + 33 - slot) % 4;
33 else
34 irq = (irq + 3 + slot) % 4;
36 irq++; /* 1-4 */
38 switch (irq) {
39 case 1:
40 irq = RBTX4938_IRQ_IOC_PCIA;
41 break;
42 case 2:
43 irq = RBTX4938_IRQ_IOC_PCIB;
44 break;
45 case 3:
46 irq = RBTX4938_IRQ_IOC_PCIC;
47 break;
48 case 4:
49 irq = RBTX4938_IRQ_IOC_PCID;
50 break;
52 return irq;