release/src-rt-6.x.4708/linux/linux-2.6.36/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/init.h>
  34 #include <linux/gameport.h>
  35 #include <linux/slab.h>
  36 #include <linux/pci.h>
  37
  38 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  39 MODULE_DESCRIPTION("EMU10k1 gameport driver");
  40 MODULE_LICENSE("GPL");
  41
  42 struct emu {
  43         struct pci_dev *dev;
  44         struct gameport *gameport;
  45         int io;
  46         int size;
  47 };
  48
  49 static const struct pci_device_id emu_tbl[] = {
  50
  51         { 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
  52         { 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
  53         { 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
  54         { 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
  55         { 0, }
  56 };
  57
  58 MODULE_DEVICE_TABLE(pci, emu_tbl);
  59
  60 static int __devinit emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  61 {
  62         int ioport, iolen;
  63         struct emu *emu;
  64         struct gameport *port;
  65
  66         if (pci_enable_device(pdev))
  67                 return -EBUSY;
  68
  69         ioport = pci_resource_start(pdev, 0);
  70         iolen = pci_resource_len(pdev, 0);
  71
  72         if (!request_region(ioport, iolen, "emu10k1-gp"))
  73                 return -EBUSY;
  74
  75         emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
  76         port = gameport_allocate_port();
  77         if (!emu || !port) {
  78                 printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
  79                 release_region(ioport, iolen);
  80                 kfree(emu);
  81                 gameport_free_port(port);
  82                 return -ENOMEM;
  83         }
  84
  85         emu->io = ioport;
  86         emu->size = iolen;
  87         emu->dev = pdev;
  88         emu->gameport = port;
  89
  90         gameport_set_name(port, "EMU10K1");
  91         gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
  92         port->dev.parent = &pdev->dev;
  93         port->io = ioport;
  94
  95         pci_set_drvdata(pdev, emu);
  96
  97         gameport_register_port(port);
  98
  99         return 0;
 100 }
 101
 102 static void __devexit emu_remove(struct pci_dev *pdev)
 103 {
 104         struct emu *emu = pci_get_drvdata(pdev);
 105
 106         gameport_unregister_port(emu->gameport);
 107         release_region(emu->io, emu->size);
 108         kfree(emu);
 109 }
 110
 111 static struct pci_driver emu_driver = {
 112         .name =         "Emu10k1_gameport",
 113         .id_table =     emu_tbl,
 114         .probe =        emu_probe,
 115         .remove =       __devexit_p(emu_remove),
 116 };
 117
 118 static int __init emu_init(void)
 119 {
 120         return pci_register_driver(&emu_driver);
 121 }
 122
 123 static void __exit emu_exit(void)
 124 {
 125         pci_unregister_driver(&emu_driver);
 126 }
 127
 128 module_init(emu_init);
 129 module_exit(emu_exit);