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/*

 * $Id: pcigame.c,v 1.1.1.1 2004-04-15 02:03:30 phoenix Exp $

 *

 *  Copyright (c) 2000-2001 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>

#include <linux/pci_gameport.h>

#define PCI_VENDOR_ID_AUREAL    0x12eb

#define PCIGAME_DATA_WAIT       20      /* 20 ms */

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 }

};

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;

}

struct pcigame *pcigame_attach(struct pci_dev *dev, int type)

{

        struct pcigame *pcigame;

        int i;

        if (!(pcigame = kmalloc(sizeof(struct pcigame), GFP_KERNEL)))

                return NULL;

        memset(pcigame, 0, sizeof(struct pcigame));

        pcigame->data = pcigame_data + type;

        pcigame->dev = dev;

        pcigame->gameport.driver = pcigame;

        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;

        if(i==6)

                return NULL;

        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 pcigame;

}

EXPORT_SYMBOL_GPL(pcigame_attach);

void pcigame_detach(struct pcigame *game)

{

        gameport_unregister_port(&game->gameport);

        iounmap(game->base);

        kfree(game);

}

EXPORT_SYMBOL_GPL(pcigame_detach);

static __devinit int pcigame_probe(struct pci_dev *dev, const struct pci_device_id *id)

{

        struct pcigame *r = pcigame_attach(dev, id->driver_data);

        if(r == NULL)

                return -1;

        pci_set_drvdata(dev, r);

        return 0;

}

static void __devexit pcigame_remove(struct pci_dev *dev)

{

        struct pcigame *pcigame = pci_get_drvdata(dev);

        pcigame_detach(pcigame);

}

static struct pci_device_id pcigame_id_table[] __devinitdata =

{

/* If the trident is configured in audio grabs it and we get called by

   that */

#if !defined(CONFIG_SOUND_TRIDENT) && !defined(CONFIG_SOUND_TRIDENT_MODULE)

 { 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_AL,      0x5451, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_4DWAVE  },

#endif 

 { 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:         __devexit_p(pcigame_remove),

};

int __init pcigame_init(void)

{

        pci_register_driver(&pcigame_driver);

        /* Needed by other modules */

        return 0;

}

void __exit pcigame_exit(void)

{

        pci_unregister_driver(&pcigame_driver);

}

module_init(pcigame_init);

module_exit(pcigame_exit);

MODULE_LICENSE("GPL");