// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
|
* arch/arm/mach-ixp4xx/gtwx5715-pci.c
|
*
|
* Gemtek GTWX5715 (Linksys WRV54G) board setup
|
*
|
* Copyright (C) 2004 George T. Joseph
|
* Derived from Coyote
|
*/
|
|
#include <linux/pci.h>
|
#include <linux/init.h>
|
#include <linux/delay.h>
|
#include <linux/irq.h>
|
#include <asm/mach-types.h>
|
#include <mach/hardware.h>
|
#include <asm/mach/pci.h>
|
|
#include "irqs.h"
|
|
#define SLOT0_DEVID 0
|
#define SLOT1_DEVID 1
|
#define INTA 10 /* slot 1 has INTA and INTB crossed */
|
#define INTB 11
|
|
/*
|
* Slot 0 isn't actually populated with a card connector but
|
* we initialize it anyway in case a future version has the
|
* slot populated or someone with good soldering skills has
|
* some free time.
|
*/
|
void __init gtwx5715_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);
|
ixp4xx_pci_preinit();
|
}
|
|
|
static int __init gtwx5715_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
{
|
int rc = -1;
|
|
if ((slot == SLOT0_DEVID && pin == 1) ||
|
(slot == SLOT1_DEVID && pin == 2))
|
rc = IXP4XX_GPIO_IRQ(INTA);
|
else if ((slot == SLOT0_DEVID && pin == 2) ||
|
(slot == SLOT1_DEVID && pin == 1))
|
rc = IXP4XX_GPIO_IRQ(INTB);
|
|
printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n",
|
__func__, slot, pin, rc);
|
return rc;
|
}
|
|
struct hw_pci gtwx5715_pci __initdata = {
|
.nr_controllers = 1,
|
.ops = &ixp4xx_ops,
|
.preinit = gtwx5715_pci_preinit,
|
.setup = ixp4xx_setup,
|
.map_irq = gtwx5715_map_irq,
|
};
|
|
int __init gtwx5715_pci_init(void)
|
{
|
if (machine_is_gtwx5715())
|
pci_common_init(>wx5715_pci);
|
|
return 0;
|
}
|
|
subsys_initcall(gtwx5715_pci_init);
|
