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
18MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
19MODULE_DESCRIPTION("EMU10k1 gameport driver");
20MODULE_LICENSE("GPL");
21
22struct emu {
23	struct pci_dev *dev;
24	struct gameport *gameport;
25	int io;
26	int size;
27};
28
29static 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
38MODULE_DEVICE_TABLE(pci, emu_tbl);
39
40static 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(struct 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
90static 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
101static struct pci_driver emu_driver = {
102        .name =         "Emu10k1_gameport",
103        .id_table =     emu_tbl,
104        .probe =        emu_probe,
105	.remove =	emu_remove,
106};
107
108module_pci_driver(emu_driver);
109