mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.6 KiB
73 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* arch/arch/mach-ixp4xx/fsg-pci.c |
|
* |
|
* FSG board-level PCI initialization |
|
* |
|
* Author: Rod Whitby <[email protected]> |
|
* Maintainer: http://www.nslu2-linux.org/ |
|
* |
|
* based on ixdp425-pci.c: |
|
* Copyright (C) 2002 Intel Corporation. |
|
* Copyright (C) 2003-2004 MontaVista Software, Inc. |
|
*/ |
|
|
|
#include <linux/pci.h> |
|
#include <linux/init.h> |
|
#include <linux/irq.h> |
|
#include <asm/mach/pci.h> |
|
#include <asm/mach-types.h> |
|
|
|
#include "irqs.h" |
|
|
|
#define MAX_DEV 3 |
|
#define IRQ_LINES 3 |
|
|
|
/* PCI controller GPIO to IRQ pin mappings */ |
|
#define INTA 6 |
|
#define INTB 7 |
|
#define INTC 5 |
|
|
|
void __init fsg_pci_preinit(void) |
|
{ |
|
irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); |
|
irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); |
|
irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); |
|
ixp4xx_pci_preinit(); |
|
} |
|
|
|
static int __init fsg_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
|
{ |
|
static int pci_irq_table[IRQ_LINES] = { |
|
IXP4XX_GPIO_IRQ(INTC), |
|
IXP4XX_GPIO_IRQ(INTB), |
|
IXP4XX_GPIO_IRQ(INTA), |
|
}; |
|
|
|
int irq = -1; |
|
slot -= 11; |
|
|
|
if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) |
|
irq = pci_irq_table[slot - 1]; |
|
printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n", |
|
__func__, slot, pin, irq); |
|
|
|
return irq; |
|
} |
|
|
|
struct hw_pci fsg_pci __initdata = { |
|
.nr_controllers = 1, |
|
.ops = &ixp4xx_ops, |
|
.preinit = fsg_pci_preinit, |
|
.setup = ixp4xx_setup, |
|
.map_irq = fsg_map_irq, |
|
}; |
|
|
|
int __init fsg_pci_init(void) |
|
{ |
|
if (machine_is_fsg()) |
|
pci_common_init(&fsg_pci); |
|
return 0; |
|
} |
|
|
|
subsys_initcall(fsg_pci_init);
|
|
|