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
  37 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  38 MODULE_DESCRIPTION("EMU10k1 gameport driver");
  39 MODULE_LICENSE("GPL");
  40
  41 struct emu {
  42         struct pci_dev *dev;
  43         struct gameport *gameport;
  44         int io;
  45         int size;
  46 };
  47
  48 static 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
  57 MODULE_DEVICE_TABLE(pci, emu_tbl);
  58
  59 static 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
 109 static 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
 120 static struct pci_driver emu_driver = {
 121         .name =         "Emu10k1_gameport",
 122         .id_table =     emu_tbl,
 123         .probe =        emu_probe,
 124         .remove =       emu_remove,
 125 };
 126
 127 module_pci_driver(emu_driver);