GNU Linux-libre 4.19.264-gnu1
[releases.git] / arch / arm / mach-footbridge / netwinder-pci.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * linux/arch/arm/mach-footbridge/netwinder-pci.c
4  *
5  * PCI bios-type initialisation for PCI machines
6  *
7  * Bits taken from various places.
8  */
9 #include <linux/kernel.h>
10 #include <linux/pci.h>
11 #include <linux/init.h>
12
13 #include <asm/irq.h>
14 #include <asm/mach/pci.h>
15 #include <asm/mach-types.h>
16
17 /*
18  * We now use the slot ID instead of the device identifiers to select
19  * which interrupt is routed where.
20  */
21 static int netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
22 {
23         switch (slot) {
24         case 0:  /* host bridge */
25                 return 0;
26
27         case 9:  /* CyberPro */
28                 return IRQ_NETWINDER_VGA;
29
30         case 10: /* DC21143 */
31                 return IRQ_NETWINDER_ETHER100;
32
33         case 12: /* Winbond 553 */
34                 return IRQ_ISA_HARDDISK1;
35
36         case 13: /* Winbond 89C940F */
37                 return IRQ_NETWINDER_ETHER10;
38
39         default:
40                 printk(KERN_ERR "PCI: unknown device in slot %s\n",
41                         pci_name(dev));
42                 return 0;
43         }
44 }
45
46 static struct hw_pci netwinder_pci __initdata = {
47         .map_irq                = netwinder_map_irq,
48         .nr_controllers         = 1,
49         .ops                    = &dc21285_ops,
50         .setup                  = dc21285_setup,
51         .preinit                = dc21285_preinit,
52         .postinit               = dc21285_postinit,
53 };
54
55 static int __init netwinder_pci_init(void)
56 {
57         if (machine_is_netwinder())
58                 pci_common_init(&netwinder_pci);
59         return 0;
60 }
61
62 subsys_initcall(netwinder_pci_init);