projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b8f0119 RC |
1 | /* |
| 2 | * arch/arm/mach-ixp4xx/miccpt-pci.c | |
| 3 | * | |
| 4 | * MICCPT board-level PCI initialization | |
| 5 | * | |
| 6 | * Copyright (C) 2002 Intel Corporation. | |
| 7 | * Copyright (C) 2003-2004 MontaVista Software, Inc. | |
| 8 | * Copyright (C) 2006 OMICRON electronics GmbH | |
| 9 | * | |
| 10 | * Author: Michael Jochum <michael.jochum@omicron.at> | |
| 11 | * | |
| 12 | * This program is free software; you can redistribute it and/or modify | |
| 13 | * it under the terms of the GNU General Public License version 2 as | |
| 14 | * published by the Free Software Foundation. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/kernel.h> | |
| 19 | #include <linux/pci.h> | |
| 20 | #include <linux/init.h> | |
| 21 | #include <linux/delay.h> | |
| 22 | #include <linux/irq.h> | |
| 23 | #include <asm/mach/pci.h> | |
| 24 | #include <asm/irq.h> | |
| 25 | #include <mach/hardware.h> | |
| 26 | #include <asm/mach-types.h> | |
| 27 | ||
| 140d9009 AB |
28 | #include "irqs.h" |
| 29 | ||
| 2b8f0119 RC |
30 | #define MAX_DEV 4 |
| 31 | #define IRQ_LINES 4 | |
| 32 | ||
| 33 | /* PCI controller GPIO to IRQ pin mappings */ | |
| 34 | #define INTA 1 | |
| 35 | #define INTB 2 | |
| 36 | #define INTC 3 | |
| 37 | #define INTD 4 | |
| 38 | ||
| 39 | ||
| 40 | void __init miccpt_pci_preinit(void) | |
| 41 | { | |
| 42 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); | |
| 43 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); | |
| 44 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); | |
| 45 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); | |
| 46 | ixp4xx_pci_preinit(); | |
| 47 | } | |
| 48 | ||
| 49 | static int __init miccpt_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) | |
| 50 | { | |
| 51 | static int pci_irq_table[IRQ_LINES] = { | |
| 52 | IXP4XX_GPIO_IRQ(INTA), | |
| 53 | IXP4XX_GPIO_IRQ(INTB), | |
| 54 | IXP4XX_GPIO_IRQ(INTC), | |
| 55 | IXP4XX_GPIO_IRQ(INTD) | |
| 56 | }; | |
| 57 | ||
| 58 | if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) | |
| 59 | return pci_irq_table[(slot + pin - 2) % 4]; | |
| 60 | ||
| 61 | return -1; | |
| 62 | } | |
| 63 | ||
| 64 | struct hw_pci miccpt_pci __initdata = { | |
| 65 | .nr_controllers = 1, | |
| c23bfc38 | 66 | .ops = &ixp4xx_ops, |
| 2b8f0119 | 67 | .preinit = miccpt_pci_preinit, |
| 2b8f0119 | 68 | .setup = ixp4xx_setup, |
| 2b8f0119 RC |
69 | .map_irq = miccpt_map_irq, |
| 70 | }; | |
| 71 | ||
| 72 | int __init miccpt_pci_init(void) | |
| 73 | { | |
| 74 | if (machine_is_miccpt()) | |
| 75 | pci_common_init(&miccpt_pci); | |
| 76 | return 0; | |
| 77 | } | |
| 78 | ||
| 79 | subsys_initcall(miccpt_pci_init); |