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 /*
11  */
12 
13 #include <asm/io.h>
14 
15 #include <linux/module.h>
16 #include <linux/ioport.h>
17 #include <linux/gameport.h>
18 #include <linux/slab.h>
19 #include <linux/pci.h>
20 
21 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
22 MODULE_DESCRIPTION("EMU10k1 gameport driver");
23 MODULE_LICENSE("GPL");
24 
25 struct emu {
26 	struct pci_dev *dev;
27 	struct gameport *gameport;
28 	int io;
29 	int size;
30 };
31 
32 static const struct pci_device_id emu_tbl[] = {
33 
34 	{ 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
35 	{ 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
36 	{ 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
37 	{ 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
38 	{ 0, }
39 };
40 
41 MODULE_DEVICE_TABLE(pci, emu_tbl);
42 
43 static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
44 {
45 	struct emu *emu;
46 	struct gameport *port;
47 	int error;
48 
49 	emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
50 	port = gameport_allocate_port();
51 	if (!emu || !port) {
52 		printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
53 		error = -ENOMEM;
54 		goto err_out_free;
55 	}
56 
57 	error = pci_enable_device(pdev);
58 	if (error)
59 		goto err_out_free;
60 
61 	emu->io = pci_resource_start(pdev, 0);
62 	emu->size = pci_resource_len(pdev, 0);
63 
64 	emu->dev = pdev;
65 	emu->gameport = port;
66 
67 	gameport_set_name(port, "EMU10K1");
68 	gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
69 	port->dev.parent = &pdev->dev;
70 	port->io = emu->io;
71 
72 	if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
73 		printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
74 			emu->io, emu->io + emu->size - 1);
75 		error = -EBUSY;
76 		goto err_out_disable_dev;
77 	}
78 
79 	pci_set_drvdata(pdev, emu);
80 
81 	gameport_register_port(port);
82 
83 	return 0;
84 
85  err_out_disable_dev:
86 	pci_disable_device(pdev);
87  err_out_free:
88 	gameport_free_port(port);
89 	kfree(emu);
90 	return error;
91 }
92 
93 static void emu_remove(struct pci_dev *pdev)
94 {
95 	struct emu *emu = pci_get_drvdata(pdev);
96 
97 	gameport_unregister_port(emu->gameport);
98 	release_region(emu->io, emu->size);
99 	kfree(emu);
100 
101 	pci_disable_device(pdev);
102 }
103 
104 static struct pci_driver emu_driver = {
105         .name =         "Emu10k1_gameport",
106         .id_table =     emu_tbl,
107         .probe =        emu_probe,
108 	.remove =	emu_remove,
109 };
110 
111 module_pci_driver(emu_driver);
112