drivers/input/gameport/emu10k1-gp.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (c) 2001 Vojtech Pavlik
   4  */
   5
   6 /*
   7  * EMU10k1 - SB Live / Audigy - gameport driver for Linux
   8  */
   9
  10 #include <asm/io.h>
  11
  12 #include <linux/module.h>
  13 #include <linux/ioport.h>
  14 #include <linux/gameport.h>
  15 #include <linux/slab.h>
  16 #include <linux/pci.h>
  17
  18 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  19 MODULE_DESCRIPTION("EMU10k1 gameport driver");
  20 MODULE_LICENSE("GPL");
  21
  22 struct emu {
  23         struct pci_dev *dev;
  24         struct gameport *gameport;
  25         int io;
  26         int size;
  27 };
  28
  29 static const struct pci_device_id emu_tbl[] = {
  30
  31         { 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
  32         { 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
  33         { 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
  34         { 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
  35         { 0, }
  36 };
  37
  38 MODULE_DEVICE_TABLE(pci, emu_tbl);
  39
  40 static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  41 {
  42         struct emu *emu;
  43         struct gameport *port;
  44         int error;
  45
  46         emu = kzalloc(sizeof(*emu), GFP_KERNEL);
  47         port = gameport_allocate_port();
  48         if (!emu || !port) {
  49                 printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
  50                 error = -ENOMEM;
  51                 goto err_out_free;
  52         }
  53
  54         error = pci_enable_device(pdev);
  55         if (error)
  56                 goto err_out_free;
  57
  58         emu->io = pci_resource_start(pdev, 0);
  59         emu->size = pci_resource_len(pdev, 0);
  60
  61         emu->dev = pdev;
  62         emu->gameport = port;
  63
  64         gameport_set_name(port, "EMU10K1");
  65         gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
  66         port->dev.parent = &pdev->dev;
  67         port->io = emu->io;
  68
  69         if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
  70                 printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
  71                         emu->io, emu->io + emu->size - 1);
  72                 error = -EBUSY;
  73                 goto err_out_disable_dev;
  74         }
  75
  76         pci_set_drvdata(pdev, emu);
  77
  78         gameport_register_port(port);
  79
  80         return 0;
  81
  82  err_out_disable_dev:
  83         pci_disable_device(pdev);
  84  err_out_free:
  85         gameport_free_port(port);
  86         kfree(emu);
  87         return error;
  88 }
  89
  90 static void emu_remove(struct pci_dev *pdev)
  91 {
  92         struct emu *emu = pci_get_drvdata(pdev);
  93
  94         gameport_unregister_port(emu->gameport);
  95         release_region(emu->io, emu->size);
  96         kfree(emu);
  97
  98         pci_disable_device(pdev);
  99 }
 100
 101 static struct pci_driver emu_driver = {
 102         .name =         "Emu10k1_gameport",
 103         .id_table =     emu_tbl,
 104         .probe =        emu_probe,
 105         .remove =       emu_remove,
 106 };
 107
 108 module_pci_driver(emu_driver);