Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Michael-Luke Jones |
176 |
66.17% |
1 |
10.00% |
| Krzysztof Hałasa |
69 |
25.94% |
2 |
20.00% |
| Russell King |
7 |
2.63% |
2 |
20.00% |
| Thomas Gleixner |
6 |
2.26% |
2 |
20.00% |
| Dmitry Eremin-Solenikov |
4 |
1.50% |
1 |
10.00% |
| Linus Walleij |
3 |
1.13% |
1 |
10.00% |
| Ralf Baechle |
1 |
0.38% |
1 |
10.00% |
| Total |
266 |
|
10 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* arch/arm/mach-ixp4xx/avila-pci.c
*
* Gateworks Avila board-level PCI initialization
*
* Author: Michael-Luke Jones <mlj28@cam.ac.uk>
*
* Based on ixdp-pci.c
* Copyright (C) 2002 Intel Corporation.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <asm/mach/pci.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include "irqs.h"
#define AVILA_MAX_DEV 4
#define LOFT_MAX_DEV 6
#define IRQ_LINES 4
/* PCI controller GPIO to IRQ pin mappings */
#define INTA 11
#define INTB 10
#define INTC 9
#define INTD 8
void __init avila_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);
irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW);
ixp4xx_pci_preinit();
}
static int __init avila_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
static int pci_irq_table[IRQ_LINES] = {
IXP4XX_GPIO_IRQ(INTA),
IXP4XX_GPIO_IRQ(INTB),
IXP4XX_GPIO_IRQ(INTC),
IXP4XX_GPIO_IRQ(INTD)
};
if (slot >= 1 &&
slot <= (machine_is_loft() ? LOFT_MAX_DEV : AVILA_MAX_DEV) &&
pin >= 1 && pin <= IRQ_LINES)
return pci_irq_table[(slot + pin - 2) % 4];
return -1;
}
struct hw_pci avila_pci __initdata = {
.nr_controllers = 1,
.ops = &ixp4xx_ops,
.preinit = avila_pci_preinit,
.setup = ixp4xx_setup,
.map_irq = avila_map_irq,
};
int __init avila_pci_init(void)
{
if (machine_is_avila() || machine_is_loft())
pci_common_init(&avila_pci);
return 0;
}
subsys_initcall(avila_pci_init);