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 		pci_disable_device(pdev);
81 		kfree(emu);
82 		gameport_free_port(port);
83 		return -ENOMEM;
84 	}
85 
86 	emu->io = ioport;
87 	emu->size = iolen;
88 	emu->dev = pdev;
89 	emu->gameport = port;
90 
91 	gameport_set_name(port, "EMU10K1");
92 	gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
93 	port->dev.parent = &pdev->dev;
94 	port->io = ioport;
95 
96 	pci_set_drvdata(pdev, emu);
97 
98 	gameport_register_port(port);
99 
100 	return 0;
101 }
102 
103 static void __devexit emu_remove(struct pci_dev *pdev)
104 {
105 	struct emu *emu = pci_get_drvdata(pdev);
106 
107 	gameport_unregister_port(emu->gameport);
108 	release_region(emu->io, emu->size);
109 	kfree(emu);
110 
111 	pci_disable_device(pdev);
112 }
113 
114 static struct pci_driver emu_driver = {
115         .name =         "Emu10k1_gameport",
116         .id_table =     emu_tbl,
117         .probe =        emu_probe,
118         .remove =       __devexit_p(emu_remove),
119 };
120 
121 static int __init emu_init(void)
122 {
123 	return pci_register_driver(&emu_driver);
124 }
125 
126 static void __exit emu_exit(void)
127 {
128 	pci_unregister_driver(&emu_driver);
129 }
130 
131 module_init(emu_init);
132 module_exit(emu_exit);
133