cregit-Linux how code gets into the kernel

Release 4.17 arch/arm/mach-ixp4xx/nslu2-pci.c

/*
 * arch/arm/mach-ixp4xx/nslu2-pci.c
 *
 * NSLU2 board-level PCI initialization
 *
 * based on ixdp425-pci.c:
 *      Copyright (C) 2002 Intel Corporation.
 *      Copyright (C) 2003-2004 MontaVista Software, Inc.
 *
 * Maintainer: http://www.nslu2-linux.org/
 *
 * 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.
 *
 */

#include <linux/pci.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <asm/mach/pci.h>
#include <asm/mach-types.h>


#define MAX_DEV		3

#define IRQ_LINES	3

/* PCI controller GPIO to IRQ pin mappings */

#define INTA		11

#define INTB		10

#define INTC		9

#define INTD		8


void __init nslu2_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(); }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo2356.10%125.00%
Krzysztof Hałasa1229.27%125.00%
Thomas Gleixner37.32%125.00%
Dmitry Baryshkov37.32%125.00%
Total41100.00%4100.00%


static int __init nslu2_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), }; if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) return pci_irq_table[(slot + pin - 2) % IRQ_LINES]; return -1; }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo5873.42%133.33%
Krzysztof Hałasa2025.32%133.33%
Ralf Bächle11.27%133.33%
Total79100.00%3100.00%

struct hw_pci __initdata nslu2_pci = { .nr_controllers = 1, .ops = &ixp4xx_ops, .preinit = nslu2_pci_preinit, .setup = ixp4xx_setup, .map_irq = nslu2_map_irq, };
int __init nslu2_pci_init(void) /* monkey see, monkey do */ { if (machine_is_nslu2()) pci_common_init(&nslu2_pci); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo23100.00%1100.00%
Total23100.00%1100.00%

subsys_initcall(nslu2_pci_init);

Overall Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo14967.12%112.50%
Krzysztof Hałasa5725.68%225.00%
Russell King62.70%112.50%
Thomas Gleixner31.35%112.50%
Dmitry Baryshkov31.35%112.50%
Martin Michlmayr31.35%112.50%
Ralf Bächle10.45%112.50%
Total222100.00%8100.00%
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