drivers/input/gameport/emu10k1-gp.c

   1 /*
   2  * $Id: emu10k1-gp.c,v 1.8 2002/01/22 20:40:46 vojtech Exp $
   3  *
   4  *  Copyright (c) 2001 Vojtech Pavlik
   5  */
   6
   7 /*
   8  * EMU10k1 - SB Live / Audigy - gameport driver for Linux
   9  */
  10
  11 /*
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  25  *
  26  * Should you need to contact me, the author, you can do so either by
  27  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  28  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  29  */
  30
  31 #include <asm/io.h>
  32
  33 #include <linux/module.h>
  34 #include <linux/ioport.h>
  35 #include <linux/init.h>
  36 #include <linux/gameport.h>
  37 #include <linux/slab.h>
  38 #include <linux/pci.h>
  39
  40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  41 MODULE_DESCRIPTION("EMU10k1 gameport driver");
  42 MODULE_LICENSE("GPL");
  43
  44 struct emu {
  45         struct pci_dev *dev;
  46         struct gameport *gameport;
  47         int io;
  48         int size;
  49 };
  50
  51 static struct pci_device_id emu_tbl[] = {
  52
  53         { 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
  54         { 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
  55         { 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
  56         { 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
  57         { 0, }
  58 };
  59
  60 MODULE_DEVICE_TABLE(pci, emu_tbl);
  61
  62 static int __devinit emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  63 {
  64         int ioport, iolen;
  65         struct emu *emu;
  66         struct gameport *port;
  67
  68         if (pci_enable_device(pdev))
  69                 return -EBUSY;
  70
  71         ioport = pci_resource_start(pdev, 0);
  72         iolen = pci_resource_len(pdev, 0);
  73
  74         if (!request_region(ioport, iolen, "emu10k1-gp"))
  75                 return -EBUSY;
  76
  77         emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
  78         port = gameport_allocate_port();
  79         if (!emu || !port) {
  80                 printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
  81                 release_region(ioport, iolen);
  82                 kfree(emu);
  83                 gameport_free_port(port);
  84                 return -ENOMEM;
  85         }
  86
  87         emu->io = ioport;
  88         emu->size = iolen;
  89         emu->dev = pdev;
  90         emu->gameport = port;
  91
  92         gameport_set_name(port, "EMU10K1");
  93         gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
  94         port->dev.parent = &pdev->dev;
  95         port->io = ioport;
  96
  97         pci_set_drvdata(pdev, emu);
  98
  99         gameport_register_port(port);
 100
 101         return 0;
 102 }
 103
 104 static void __devexit emu_remove(struct pci_dev *pdev)
 105 {
 106         struct emu *emu = pci_get_drvdata(pdev);
 107
 108         gameport_unregister_port(emu->gameport);
 109         release_region(emu->io, emu->size);
 110         kfree(emu);
 111 }
 112
 113 static struct pci_driver emu_driver = {
 114         .name =         "Emu10k1_gameport",
 115         .id_table =     emu_tbl,
 116         .probe =        emu_probe,
 117         .remove =       __devexit_p(emu_remove),
 118 };
 119
 120 static int __init emu_init(void)
 121 {
 122         return pci_register_driver(&emu_driver);
 123 }
 124
 125 static void __exit emu_exit(void)
 126 {
 127         pci_unregister_driver(&emu_driver);
 128 }
 129
 130 module_init(emu_init);
 131 module_exit(emu_exit);