mirror of https://gitee.com/openkylin/linux.git
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/*
|
|
* arch/arm/mach-ixp4xx/gtwx5715-pci.c
|
|
*
|
|
* Gemtek GTWX5715 (Linksys WRV54G) board setup
|
|
*
|
|
* Copyright (C) 2004 George T. Joseph
|
|
* Derived from Coyote
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/irq.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/hardware.h>
|
|
#include <asm/arch/gtwx5715.h>
|
|
#include <asm/mach/pci.h>
|
|
|
|
/*
|
|
* The exact GPIO pins and IRQs are defined in arch-ixp4xx/gtwx5715.h
|
|
* 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)
|
|
{
|
|
set_irq_type(GTWX5715_PCI_SLOT0_INTA_IRQ, IRQT_LOW);
|
|
set_irq_type(GTWX5715_PCI_SLOT0_INTB_IRQ, IRQT_LOW);
|
|
set_irq_type(GTWX5715_PCI_SLOT1_INTA_IRQ, IRQT_LOW);
|
|
set_irq_type(GTWX5715_PCI_SLOT1_INTB_IRQ, IRQT_LOW);
|
|
|
|
ixp4xx_pci_preinit();
|
|
}
|
|
|
|
|
|
static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int rc;
|
|
static int gtwx5715_irqmap
|
|
[GTWX5715_PCI_SLOT_COUNT]
|
|
[GTWX5715_PCI_INT_PIN_COUNT] = {
|
|
{GTWX5715_PCI_SLOT0_INTA_IRQ, GTWX5715_PCI_SLOT0_INTB_IRQ},
|
|
{GTWX5715_PCI_SLOT1_INTA_IRQ, GTWX5715_PCI_SLOT1_INTB_IRQ},
|
|
};
|
|
|
|
if (slot >= GTWX5715_PCI_SLOT_COUNT ||
|
|
pin >= GTWX5715_PCI_INT_PIN_COUNT) rc = -1;
|
|
else
|
|
rc = gtwx5715_irqmap[slot][pin-1];
|
|
|
|
printk("%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,
|
|
.preinit = gtwx5715_pci_preinit,
|
|
.swizzle = pci_std_swizzle,
|
|
.setup = ixp4xx_setup,
|
|
.scan = ixp4xx_scan_bus,
|
|
.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);
|