161 строка
3.9 KiB
C
161 строка
3.9 KiB
C
/*
|
|
* FM801 gameport driver for Linux
|
|
*
|
|
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
|
|
*
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#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_FORTEMEDIA 0x1319
|
|
#define PCI_DEVICE_ID_FM801_GP 0x0802
|
|
|
|
#define HAVE_COOKED
|
|
|
|
struct fm801_gp {
|
|
struct gameport *gameport;
|
|
struct resource *res_port;
|
|
};
|
|
|
|
#ifdef HAVE_COOKED
|
|
static int fm801_gp_cooked_read(struct gameport *gameport, int *axes, int *buttons)
|
|
{
|
|
unsigned short w;
|
|
|
|
w = inw(gameport->io + 2);
|
|
*buttons = (~w >> 14) & 0x03;
|
|
axes[0] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
|
|
w = inw(gameport->io + 4);
|
|
axes[1] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
|
|
w = inw(gameport->io + 6);
|
|
*buttons |= ((~w >> 14) & 0x03) << 2;
|
|
axes[2] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
|
|
w = inw(gameport->io + 8);
|
|
axes[3] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
|
|
outw(0xff, gameport->io); /* reset */
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int fm801_gp_open(struct gameport *gameport, int mode)
|
|
{
|
|
switch (mode) {
|
|
#ifdef HAVE_COOKED
|
|
case GAMEPORT_MODE_COOKED:
|
|
return 0;
|
|
#endif
|
|
case GAMEPORT_MODE_RAW:
|
|
return 0;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fm801_gp_probe(struct pci_dev *pci, const struct pci_device_id *id)
|
|
{
|
|
struct fm801_gp *gp;
|
|
struct gameport *port;
|
|
int error;
|
|
|
|
gp = kzalloc(sizeof(struct fm801_gp), GFP_KERNEL);
|
|
port = gameport_allocate_port();
|
|
if (!gp || !port) {
|
|
printk(KERN_ERR "fm801-gp: Memory allocation failed\n");
|
|
error = -ENOMEM;
|
|
goto err_out_free;
|
|
}
|
|
|
|
error = pci_enable_device(pci);
|
|
if (error)
|
|
goto err_out_free;
|
|
|
|
port->open = fm801_gp_open;
|
|
#ifdef HAVE_COOKED
|
|
port->cooked_read = fm801_gp_cooked_read;
|
|
#endif
|
|
gameport_set_name(port, "FM801");
|
|
gameport_set_phys(port, "pci%s/gameport0", pci_name(pci));
|
|
port->dev.parent = &pci->dev;
|
|
port->io = pci_resource_start(pci, 0);
|
|
|
|
gp->gameport = port;
|
|
gp->res_port = request_region(port->io, 0x10, "FM801 GP");
|
|
if (!gp->res_port) {
|
|
printk(KERN_DEBUG "fm801-gp: unable to grab region 0x%x-0x%x\n",
|
|
port->io, port->io + 0x0f);
|
|
error = -EBUSY;
|
|
goto err_out_disable_dev;
|
|
}
|
|
|
|
pci_set_drvdata(pci, gp);
|
|
|
|
outb(0x60, port->io + 0x0d); /* enable joystick 1 and 2 */
|
|
gameport_register_port(port);
|
|
|
|
return 0;
|
|
|
|
err_out_disable_dev:
|
|
pci_disable_device(pci);
|
|
err_out_free:
|
|
gameport_free_port(port);
|
|
kfree(gp);
|
|
return error;
|
|
}
|
|
|
|
static void fm801_gp_remove(struct pci_dev *pci)
|
|
{
|
|
struct fm801_gp *gp = pci_get_drvdata(pci);
|
|
|
|
gameport_unregister_port(gp->gameport);
|
|
release_resource(gp->res_port);
|
|
kfree(gp);
|
|
|
|
pci_disable_device(pci);
|
|
}
|
|
|
|
static const struct pci_device_id fm801_gp_id_table[] = {
|
|
{ PCI_VENDOR_ID_FORTEMEDIA, PCI_DEVICE_ID_FM801_GP, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, fm801_gp_id_table);
|
|
|
|
static struct pci_driver fm801_gp_driver = {
|
|
.name = "FM801_gameport",
|
|
.id_table = fm801_gp_id_table,
|
|
.probe = fm801_gp_probe,
|
|
.remove = fm801_gp_remove,
|
|
};
|
|
|
|
module_pci_driver(fm801_gp_driver);
|
|
|
|
MODULE_DESCRIPTION("FM801 gameport driver");
|
|
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
|
|
MODULE_LICENSE("GPL");
|