Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Uwe Zeisberger | f30c226 | 2006-10-03 23:01:26 +0200 | [diff] [blame] | 2 | * arch/arm/mach-ixp4xx/coyote-pci.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * PCI setup routines for ADI Engineering Coyote platform |
| 5 | * |
| 6 | * Copyright (C) 2002 Jungo Software Technologies. |
| 7 | * Copyright (C) 2003 MontaVista Softwrae, Inc. |
| 8 | * |
| 9 | * Maintainer: Deepak Saxena <dsaxena@mvista.com> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/pci.h> |
| 19 | #include <linux/init.h> |
Thomas Gleixner | 698dfe2 | 2006-07-01 23:01:49 +0100 | [diff] [blame] | 20 | #include <linux/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <asm/mach-types.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 22 | #include <mach/hardware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <asm/mach/pci.h> |
| 25 | |
Krzysztof Hałasa | 8d3fdf3 | 2009-11-17 18:48:23 +0100 | [diff] [blame] | 26 | #define SLOT0_DEVID 14 |
| 27 | #define SLOT1_DEVID 15 |
Krzysztof Hałasa | f89f449 | 2009-11-16 15:57:41 +0100 | [diff] [blame] | 28 | |
| 29 | /* PCI controller GPIO to IRQ pin mappings */ |
Krzysztof Hałasa | 8d3fdf3 | 2009-11-17 18:48:23 +0100 | [diff] [blame] | 30 | #define SLOT0_INTA 6 |
| 31 | #define SLOT1_INTA 11 |
Krzysztof Hałasa | f89f449 | 2009-11-16 15:57:41 +0100 | [diff] [blame] | 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | void __init coyote_pci_preinit(void) |
| 34 | { |
Thomas Gleixner | 6845664a | 2011-03-24 13:25:22 +0100 | [diff] [blame] | 35 | irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW); |
| 36 | irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | ixp4xx_pci_preinit(); |
| 38 | } |
| 39 | |
Ralf Baechle | d534194 | 2011-06-10 15:30:21 +0100 | [diff] [blame] | 40 | static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | { |
Krzysztof Hałasa | 8d3fdf3 | 2009-11-17 18:48:23 +0100 | [diff] [blame] | 42 | if (slot == SLOT0_DEVID) |
| 43 | return IXP4XX_GPIO_IRQ(SLOT0_INTA); |
| 44 | else if (slot == SLOT1_DEVID) |
| 45 | return IXP4XX_GPIO_IRQ(SLOT1_INTA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | else return -1; |
| 47 | } |
| 48 | |
| 49 | struct hw_pci coyote_pci __initdata = { |
| 50 | .nr_controllers = 1, |
| 51 | .preinit = coyote_pci_preinit, |
| 52 | .swizzle = pci_std_swizzle, |
| 53 | .setup = ixp4xx_setup, |
| 54 | .scan = ixp4xx_scan_bus, |
| 55 | .map_irq = coyote_map_irq, |
| 56 | }; |
| 57 | |
| 58 | int __init coyote_pci_init(void) |
| 59 | { |
| 60 | if (machine_is_adi_coyote()) |
| 61 | pci_common_init(&coyote_pci); |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | subsys_initcall(coyote_pci_init); |