emu10k1-gp.c

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/*
 *  Copyright (c) 2001 Vojtech Pavlik
 */

/*
 * EMU10k1 - SB Live / Audigy - 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 <[email protected]>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <asm/io.h>

#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/gameport.h>
#include <linux/slab.h>
#include <linux/pci.h>

MODULE_AUTHOR("Vojtech Pavlik <[email protected]>");
MODULE_DESCRIPTION("EMU10k1 gameport driver");
MODULE_LICENSE("GPL");

struct emu {
    struct pci_dev *dev;
    struct gameport *gameport;
    int io;
    int size;
};

static const struct pci_device_id emu_tbl[] = {

    { 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
    { 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
    { 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
    { 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
    { 0, }
};

MODULE_DEVICE_TABLE(pci, emu_tbl);

static int __devinit emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
    struct emu *emu;
    struct gameport *port;
    int error;

    emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
    port = gameport_allocate_port();
    if (!emu || !port) {
        printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
        error = -ENOMEM;
        goto err_out_free;
    }

    error = pci_enable_device(pdev);
    if (error)
        goto err_out_free;

    emu->io = pci_resource_start(pdev, 0);
    emu->size = pci_resource_len(pdev, 0);

    emu->dev = pdev;
    emu->gameport = port;

    gameport_set_name(port, "EMU10K1");
    gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
    port->dev.parent = &pdev->dev;
    port->io = emu->io;

    if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
        printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
            emu->io, emu->io + emu->size - 1);
        error = -EBUSY;
        goto err_out_disable_dev;
    }

    pci_set_drvdata(pdev, emu);

    gameport_register_port(port);

    return 0;

 err_out_disable_dev:
    pci_disable_device(pdev);
 err_out_free:
    gameport_free_port(port);
    kfree(emu);
    return error;
}

static void __devexit emu_remove(struct pci_dev *pdev)
{
    struct emu *emu = pci_get_drvdata(pdev);

    gameport_unregister_port(emu->gameport);
    release_region(emu->io, emu->size);
    kfree(emu);

    pci_disable_device(pdev);
}

static struct pci_driver emu_driver = {
        .name =         "Emu10k1_gameport",
        .id_table =     emu_tbl,
        .probe =        emu_probe,
        .remove =       __devexit_p(emu_remove),
};

module_pci_driver(emu_driver);