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
  25 #include <asm/io.h>
  26
  27 #include <linux/module.h>
  28 #include <linux/ioport.h>
  29 #include <linux/gameport.h>
  30 #include <linux/slab.h>
  31 #include <linux/pci.h>
  32
  33 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  34 MODULE_DESCRIPTION("EMU10k1 gameport driver");
  35 MODULE_LICENSE("GPL");
  36
  37 struct emu {
  38         struct pci_dev *dev;
  39         struct gameport *gameport;
  40         int io;
  41         int size;
  42 };
  43
  44 static const struct pci_device_id emu_tbl[] = {
  45
  46         { 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
  47         { 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
  48         { 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
  49         { 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
  50         { 0, }
  51 };
  52
  53 MODULE_DEVICE_TABLE(pci, emu_tbl);
  54
  55 static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  56 {
  57         struct emu *emu;
  58         struct gameport *port;
  59         int error;
  60
  61         emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
  62         port = gameport_allocate_port();
  63         if (!emu || !port) {
  64                 printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
  65                 error = -ENOMEM;
  66                 goto err_out_free;
  67         }
  68
  69         error = pci_enable_device(pdev);
  70         if (error)
  71                 goto err_out_free;
  72
  73         emu->io = pci_resource_start(pdev, 0);
  74         emu->size = pci_resource_len(pdev, 0);
  75
  76         emu->dev = pdev;
  77         emu->gameport = port;
  78
  79         gameport_set_name(port, "EMU10K1");
  80         gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
  81         port->dev.parent = &pdev->dev;
  82         port->io = emu->io;
  83
  84         if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
  85                 printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
  86                         emu->io, emu->io + emu->size - 1);
  87                 error = -EBUSY;
  88                 goto err_out_disable_dev;
  89         }
  90
  91         pci_set_drvdata(pdev, emu);
  92
  93         gameport_register_port(port);
  94
  95         return 0;
  96
  97  err_out_disable_dev:
  98         pci_disable_device(pdev);
  99  err_out_free:
 100         gameport_free_port(port);
 101         kfree(emu);
 102         return error;
 103 }
 104
 105 static void emu_remove(struct pci_dev *pdev)
 106 {
 107         struct emu *emu = pci_get_drvdata(pdev);
 108
 109         gameport_unregister_port(emu->gameport);
 110         release_region(emu->io, emu->size);
 111         kfree(emu);
 112
 113         pci_disable_device(pdev);
 114 }
 115
 116 static struct pci_driver emu_driver = {
 117         .name =         "Emu10k1_gameport",
 118         .id_table =     emu_tbl,
 119         .probe =        emu_probe,
 120         .remove =       emu_remove,
 121 };
 122
 123 module_pci_driver(emu_driver);