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 
25 #include <asm/io.h>
26 
27 #include <linux/module.h>
28 #include <linux/ioport.h>
29 #include <linux/gameport.h>
30 #include <linux/slab.h>
31 #include <linux/pci.h>
32 
33 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
34 MODULE_DESCRIPTION("EMU10k1 gameport driver");
35 MODULE_LICENSE("GPL");
36 
37 struct emu {
38 	struct pci_dev *dev;
39 	struct gameport *gameport;
40 	int io;
41 	int size;
42 };
43 
44 static const struct pci_device_id emu_tbl[] = {
45 
46 	{ 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
47 	{ 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
48 	{ 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
49 	{ 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
50 	{ 0, }
51 };
52 
53 MODULE_DEVICE_TABLE(pci, emu_tbl);
54 
55 static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
56 {
57 	struct emu *emu;
58 	struct gameport *port;
59 	int error;
60 
61 	emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
62 	port = gameport_allocate_port();
63 	if (!emu || !port) {
64 		printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
65 		error = -ENOMEM;
66 		goto err_out_free;
67 	}
68 
69 	error = pci_enable_device(pdev);
70 	if (error)
71 		goto err_out_free;
72 
73 	emu->io = pci_resource_start(pdev, 0);
74 	emu->size = pci_resource_len(pdev, 0);
75 
76 	emu->dev = pdev;
77 	emu->gameport = port;
78 
79 	gameport_set_name(port, "EMU10K1");
80 	gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
81 	port->dev.parent = &pdev->dev;
82 	port->io = emu->io;
83 
84 	if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
85 		printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
86 			emu->io, emu->io + emu->size - 1);
87 		error = -EBUSY;
88 		goto err_out_disable_dev;
89 	}
90 
91 	pci_set_drvdata(pdev, emu);
92 
93 	gameport_register_port(port);
94 
95 	return 0;
96 
97  err_out_disable_dev:
98 	pci_disable_device(pdev);
99  err_out_free:
100 	gameport_free_port(port);
101 	kfree(emu);
102 	return error;
103 }
104 
105 static void emu_remove(struct pci_dev *pdev)
106 {
107 	struct emu *emu = pci_get_drvdata(pdev);
108 
109 	gameport_unregister_port(emu->gameport);
110 	release_region(emu->io, emu->size);
111 	kfree(emu);
112 
113 	pci_disable_device(pdev);
114 }
115 
116 static struct pci_driver emu_driver = {
117         .name =         "Emu10k1_gameport",
118         .id_table =     emu_tbl,
119         .probe =        emu_probe,
120 	.remove =	emu_remove,
121 };
122 
123 module_pci_driver(emu_driver);
124