[deliverable/linux.git] / arch / arm / mach-ixp4xx / gtwx5715-pci.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 <mach/hardware.h>
#include <asm/mach/pci.h>

#define GTWX5715_PCI_SLOT0_DEVID	0
#define GTWX5715_PCI_SLOT0_INTA_GPIO	10
#define GTWX5715_PCI_SLOT0_INTB_GPIO	11
#define GTWX5715_PCI_SLOT0_INTA_IRQ	IRQ_IXP4XX_GPIO10
#define GTWX5715_PCI_SLOT0_INTB_IRQ	IRQ_IXP4XX_GPIO11

#define GTWX5715_PCI_SLOT1_DEVID	1
#define GTWX5715_PCI_SLOT1_INTA_GPIO	11
#define GTWX5715_PCI_SLOT1_INTB_GPIO	10
#define GTWX5715_PCI_SLOT1_INTA_IRQ	IRQ_IXP4XX_GPIO11
#define GTWX5715_PCI_SLOT1_INTB_IRQ	IRQ_IXP4XX_GPIO10

#define GTWX5715_PCI_SLOT_COUNT		2
#define GTWX5715_PCI_INT_PIN_COUNT	2

/*
 * 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, IRQ_TYPE_LEVEL_LOW);
	set_irq_type(GTWX5715_PCI_SLOT0_INTB_IRQ, IRQ_TYPE_LEVEL_LOW);
	set_irq_type(GTWX5715_PCI_SLOT1_INTA_IRQ, IRQ_TYPE_LEVEL_LOW);
	set_irq_type(GTWX5715_PCI_SLOT1_INTB_IRQ, IRQ_TYPE_LEVEL_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(&gtwx5715_pci);
	}

	return 0;
}

subsys_initcall(gtwx5715_pci_init);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* arch/arm/mach-ixp4xx/gtwx5715-pci.c
	3	*
	4	* Gemtek GTWX5715 (Linksys WRV54G) board setup
	5	*
	6	* Copyright (C) 2004 George T. Joseph
	7	* Derived from Coyote
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License
	11	* as published by the Free Software Foundation; either version 2
	12	* of the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	22	*
	23	*/
	24
	25	#include <linux/pci.h>
	26	#include <linux/init.h>
	27	#include <linux/delay.h>
ddaca4a2	28	#include <linux/irq.h>
1da177e4	29	#include <asm/mach-types.h>
a09e64fb	30	#include <mach/hardware.h>
1da177e4 LT	31	#include <asm/mach/pci.h>
1da177e4 LT	32
a8b7b340 KH	33	#define GTWX5715_PCI_SLOT0_DEVID 0
	34	#define GTWX5715_PCI_SLOT0_INTA_GPIO 10
	35	#define GTWX5715_PCI_SLOT0_INTB_GPIO 11
	36	#define GTWX5715_PCI_SLOT0_INTA_IRQ IRQ_IXP4XX_GPIO10
	37	#define GTWX5715_PCI_SLOT0_INTB_IRQ IRQ_IXP4XX_GPIO11
	38
	39	#define GTWX5715_PCI_SLOT1_DEVID 1
	40	#define GTWX5715_PCI_SLOT1_INTA_GPIO 11
	41	#define GTWX5715_PCI_SLOT1_INTB_GPIO 10
	42	#define GTWX5715_PCI_SLOT1_INTA_IRQ IRQ_IXP4XX_GPIO11
	43	#define GTWX5715_PCI_SLOT1_INTB_IRQ IRQ_IXP4XX_GPIO10
	44
	45	#define GTWX5715_PCI_SLOT_COUNT 2
	46	#define GTWX5715_PCI_INT_PIN_COUNT 2
	47
bdf82b59	48	/*
bdf82b59 DS	49	* Slot 0 isn't actually populated with a card connector but
	50	* we initialize it anyway in case a future version has the
	51	* slot populated or someone with good soldering skills has
	52	* some free time.
	53	*/
1da177e4 LT	54	void __init gtwx5715_pci_preinit(void)
1da177e4 LT	55	{
6cab4860 DB	56	set_irq_type(GTWX5715_PCI_SLOT0_INTA_IRQ, IRQ_TYPE_LEVEL_LOW);
	57	set_irq_type(GTWX5715_PCI_SLOT0_INTB_IRQ, IRQ_TYPE_LEVEL_LOW);
	58	set_irq_type(GTWX5715_PCI_SLOT1_INTA_IRQ, IRQ_TYPE_LEVEL_LOW);
	59	set_irq_type(GTWX5715_PCI_SLOT1_INTB_IRQ, IRQ_TYPE_LEVEL_LOW);
1da177e4 LT	60
	61	ixp4xx_pci_preinit();
	62	}
	63
	64
	65	static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	66	{
	67	int rc;
	68	static int gtwx5715_irqmap
	69	[GTWX5715_PCI_SLOT_COUNT]
	70	[GTWX5715_PCI_INT_PIN_COUNT] = {
	71	{GTWX5715_PCI_SLOT0_INTA_IRQ, GTWX5715_PCI_SLOT0_INTB_IRQ},
	72	{GTWX5715_PCI_SLOT1_INTA_IRQ, GTWX5715_PCI_SLOT1_INTB_IRQ},
	73	};
	74
	75	if (slot >= GTWX5715_PCI_SLOT_COUNT \|\|
	76	pin >= GTWX5715_PCI_INT_PIN_COUNT) rc = -1;
	77	else
	78	rc = gtwx5715_irqmap[slot][pin-1];
	79
8e86f427	80	printk("%s: Mapped slot %d pin %d to IRQ %d\n", __func__, slot, pin, rc);
1da177e4 LT	81	return(rc);
	82	}
	83
	84	struct hw_pci gtwx5715_pci __initdata = {
	85	.nr_controllers = 1,
	86	.preinit = gtwx5715_pci_preinit,
	87	.swizzle = pci_std_swizzle,
	88	.setup = ixp4xx_setup,
	89	.scan = ixp4xx_scan_bus,
	90	.map_irq = gtwx5715_map_irq,
	91	};
	92
	93	int __init gtwx5715_pci_init(void)
	94	{
	95	if (machine_is_gtwx5715())
	96	{
	97	pci_common_init(&gtwx5715_pci);
	98	}
	99
	100	return 0;
	101	}
	102
	103	subsys_initcall(gtwx5715_pci_init);