1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * arch/arm/mach-ixp4xx/coyote-pci.c
4 *
5 * PCI setup routines for ADI Engineering Coyote platform
6 *
7 * Copyright (C) 2002 Jungo Software Technologies.
8 * Copyright (C) 2003 MontaVista Softwrae, Inc.
9 *
10 * Maintainer: Deepak Saxena <dsaxena@mvista.com>
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/pci.h>
15 #include <linux/init.h>
16 #include <linux/irq.h>
17 #include <asm/mach-types.h>
18 #include <mach/hardware.h>
19 #include <asm/irq.h>
20 #include <asm/mach/pci.h>
21
22 #include "irqs.h"
23
24 #define SLOT0_DEVID 14
25 #define SLOT1_DEVID 15
26
27 /* PCI controller GPIO to IRQ pin mappings */
28 #define SLOT0_INTA 6
29 #define SLOT1_INTA 11
30
coyote_pci_preinit(void)31 void __init coyote_pci_preinit(void)
32 {
33 irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
34 irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
35 ixp4xx_pci_preinit();
36 }
37
coyote_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)38 static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
39 {
40 if (slot == SLOT0_DEVID)
41 return IXP4XX_GPIO_IRQ(SLOT0_INTA);
42 else if (slot == SLOT1_DEVID)
43 return IXP4XX_GPIO_IRQ(SLOT1_INTA);
44 else return -1;
45 }
46
47 struct hw_pci coyote_pci __initdata = {
48 .nr_controllers = 1,
49 .ops = &ixp4xx_ops,
50 .preinit = coyote_pci_preinit,
51 .setup = ixp4xx_setup,
52 .map_irq = coyote_map_irq,
53 };
54
coyote_pci_init(void)55 int __init coyote_pci_init(void)
56 {
57 if (machine_is_adi_coyote())
58 pci_common_init(&coyote_pci);
59 return 0;
60 }
61
62 subsys_initcall(coyote_pci_init);
63
