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