LXR linux/drivers/input/gameport/emu10k1-gp.c

   1/*
   2 *  Copyright (c) 2001 Vojtech Pavlik
   3 */
   4
   5/*
   6 * EMU10k1 - SB Live / Audigy - gameport driver for Linux
   7 */
   8
   9/*
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  23 *
  24 * Should you need to contact me, the author, you can do so either by
  25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  27 */
  28
  29#include <asm/io.h>
  30
  31#include <linux/module.h>
  32#include <linux/ioport.h>
  33#include <linux/gameport.h>
  34#include <linux/slab.h>
  35#include <linux/pci.h>
  36
  37MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  38MODULE_DESCRIPTION("EMU10k1 gameport driver");
  39MODULE_LICENSE("GPL");
  40
  41struct emu {
  42        struct pci_dev *dev;
  43        struct gameport *gameport;
  44        int io;
  45        int size;
  46};
  47
  48static const struct pci_device_id emu_tbl[] = {
  49
  50        { 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
  51        { 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
  52        { 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
  53        { 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
  54        { 0, }
  55};
  56
  57MODULE_DEVICE_TABLE(pci, emu_tbl);
  58
  59static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  60{
  61        struct emu *emu;
  62        struct gameport *port;
  63        int error;
  64
  65        emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
  66        port = gameport_allocate_port();
  67        if (!emu || !port) {
  68                printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
  69                error = -ENOMEM;
  70                goto err_out_free;
  71        }
  72
  73        error = pci_enable_device(pdev);
  74        if (error)
  75                goto err_out_free;
  76
  77        emu->io = pci_resource_start(pdev, 0);
  78        emu->size = pci_resource_len(pdev, 0);
  79
  80        emu->dev = pdev;
  81        emu->gameport = port;
  82
  83        gameport_set_name(port, "EMU10K1");
  84        gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
  85        port->dev.parent = &pdev->dev;
  86        port->io = emu->io;
  87
  88        if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
  89                printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
  90                        emu->io, emu->io + emu->size - 1);
  91                error = -EBUSY;
  92                goto err_out_disable_dev;
  93        }
  94
  95        pci_set_drvdata(pdev, emu);
  96
  97        gameport_register_port(port);
  98
  99        return 0;
 100
 101 err_out_disable_dev:
 102        pci_disable_device(pdev);
 103 err_out_free:
 104        gameport_free_port(port);
 105        kfree(emu);
 106        return error;
 107}
 108
 109static void emu_remove(struct pci_dev *pdev)
 110{
 111        struct emu *emu = pci_get_drvdata(pdev);
 112
 113        gameport_unregister_port(emu->gameport);
 114        release_region(emu->io, emu->size);
 115        kfree(emu);
 116
 117        pci_disable_device(pdev);
 118}
 119
 120static struct pci_driver emu_driver = {
 121        .name =         "Emu10k1_gameport",
 122        .id_table =     emu_tbl,
 123        .probe =        emu_probe,
 124        .remove =       emu_remove,
 125};
 126
 127module_pci_driver(emu_driver);
 128