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/*
* $Id: pcigame.c,v 1.6 2000/05/25 12:05:24 vojtech Exp $
*
* Copyright (c) 2000 Vojtech Pavlik
*
* Based on the work of:
* Raymond Ingles
*
* Sponsored by SuSE
*/
/*
* Trident 4DWave and Aureal Vortex gameport driver for Linux
*/
/*
* 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
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/gameport.h>
#define PCI_VENDOR_ID_AUREAL 0x12eb
#define PCIGAME_DATA_WAIT 20 /* 20 ms */
#define PCIGAME_4DWAVE 0
#define PCIGAME_VORTEX 1
#define PCIGAME_VORTEX2 2
struct pcigame_data {
int gcr; /* Gameport control register */
int legacy; /* Legacy port location */
int axes; /* Axes start */
int axsize; /* Axis field size */
int axmax; /* Axis field max value */
int adcmode; /* Value to enable ADC mode in GCR */
};
static struct pcigame_data pcigame_data[] __devinitdata =
{{ 0x00030, 0x00031, 0x00034, 2, 0xffff, 0x80 },
{ 0x1100c, 0x11008, 0x11010, 4, 0x1fff, 0x40 },
{ 0x2880c, 0x28808, 0x28810, 4, 0x1fff, 0x40 },
{ 0 }};
struct pcigame {
struct gameport gameport;
struct pci_dev *dev;
unsigned char *base;
struct pcigame_data *data;
};
static unsigned char pcigame_read(struct gameport *gameport)
{
struct pcigame *pcigame = gameport->driver;
return readb(pcigame->base + pcigame->data->legacy);
}
static void pcigame_trigger(struct gameport *gameport)
{
struct pcigame *pcigame = gameport->driver;
writeb(0xff, pcigame->base + pcigame->data->legacy);
}
static int pcigame_cooked_read(struct gameport *gameport, int *axes, int *buttons)
{
struct pcigame *pcigame = gameport->driver;
int i;
*buttons = (~readb(pcigame->base + pcigame->data->legacy) >> 4) & 0xf;
for (i = 0; i < 4; i++) {
axes[i] = readw(pcigame->base + pcigame->data->axes + i * pcigame->data->axsize);
if (axes[i] == pcigame->data->axmax) axes[i] = -1;
}
return 0;
}
static int pcigame_open(struct gameport *gameport, int mode)
{
struct pcigame *pcigame = gameport->driver;
switch (mode) {
case GAMEPORT_MODE_COOKED:
writeb(pcigame->data->adcmode, pcigame->base + pcigame->data->gcr);
wait_ms(PCIGAME_DATA_WAIT);
return 0;
case GAMEPORT_MODE_RAW:
writeb(0, pcigame->base + pcigame->data->gcr);
return 0;
default:
return -1;
}
return 0;
}
static int __devinit pcigame_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct pcigame *pcigame;
int i;
if (!(pcigame = kmalloc(sizeof(struct pcigame), GFP_KERNEL)))
return -1;
memset(pcigame, 0, sizeof(struct pcigame));
pcigame->data = pcigame_data + id->driver_data;
pcigame->dev = dev;
dev->driver_data = pcigame;
pcigame->gameport.driver = pcigame;
pcigame->gameport.type = GAMEPORT_EXT;
pcigame->gameport.fuzz = 64;
pcigame->gameport.read = pcigame_read;
pcigame->gameport.trigger = pcigame_trigger;
pcigame->gameport.cooked_read = pcigame_cooked_read;
pcigame->gameport.open = pcigame_open;
for (i = 0; i < 6; i++)
if (~pci_resource_flags(dev, i) & IORESOURCE_IO)
break;
pci_enable_device(dev);
pcigame->base = ioremap(pci_resource_start(pcigame->dev, i),
pci_resource_len(pcigame->dev, i));
gameport_register_port(&pcigame->gameport);
printk(KERN_INFO "gameport%d: %s at pci%02x:%02x.%x speed %d kHz\n",
pcigame->gameport.number, dev->name, dev->bus->number,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn), pcigame->gameport.speed);
return 0;
}
static void __devexit pcigame_remove(struct pci_dev *dev)
{
struct pcigame *pcigame = dev->driver_data;
gameport_unregister_port(&pcigame->gameport);
iounmap(pcigame->base);
kfree(pcigame);
}
static struct pci_device_id pcigame_id_table[] __devinitdata =
{{ PCI_VENDOR_ID_TRIDENT, 0x2000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_4DWAVE },
{ PCI_VENDOR_ID_TRIDENT, 0x2001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_4DWAVE },
{ PCI_VENDOR_ID_AUREAL, 0x0001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_VORTEX },
{ PCI_VENDOR_ID_AUREAL, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_VORTEX2 },
{ 0 }};
static struct pci_driver pcigame_driver = {
name: "pcigame",
id_table: pcigame_id_table,
probe: pcigame_probe,
remove: pcigame_remove,
};
int __init pcigame_init(void)
{
return pci_module_init(&pcigame_driver);
}
void __exit pcigame_exit(void)
{
pci_unregister_driver(&pcigame_driver);
}
module_init(pcigame_init);
module_exit(pcigame_exit);
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