d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* arch/arm/mach-ixp4xx/miccpt-pci.c
|
|
*
|
|
* MICCPT board-level PCI initialization
|
|
*
|
|
* Copyright (C) 2002 Intel Corporation.
|
|
* Copyright (C) 2003-2004 MontaVista Software, Inc.
|
|
* Copyright (C) 2006 OMICRON electronics GmbH
|
|
*
|
|
* Author: Michael Jochum <michael.jochum@omicron.at>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/irq.h>
|
|
#include <asm/mach/pci.h>
|
|
#include <asm/irq.h>
|
|
#include <mach/hardware.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
#define MAX_DEV 4
|
|
#define IRQ_LINES 4
|
|
|
|
/* PCI controller GPIO to IRQ pin mappings */
|
|
#define INTA 1
|
|
#define INTB 2
|
|
#define INTC 3
|
|
#define INTD 4
|
|
|
|
|
|
void __init miccpt_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 miccpt_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 <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES)
|
|
return pci_irq_table[(slot + pin - 2) % 4];
|
|
|
|
return -1;
|
|
}
|
|
|
|
struct hw_pci miccpt_pci __initdata = {
|
|
.nr_controllers = 1,
|
|
.ops = &ixp4xx_ops,
|
|
.preinit = miccpt_pci_preinit,
|
|
.setup = ixp4xx_setup,
|
|
.map_irq = miccpt_map_irq,
|
|
};
|
|
|
|
int __init miccpt_pci_init(void)
|
|
{
|
|
if (machine_is_miccpt())
|
|
pci_common_init(&miccpt_pci);
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(miccpt_pci_init);
|