1 /*
2 * FM801 gameport driver for Linux
3 *
4 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 */
22
23 #include <asm/io.h>
24 #include <linux/delay.h>
25 #include <linux/errno.h>
26 #include <linux/ioport.h>
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/pci.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/gameport.h>
33
34 #define PCI_VENDOR_ID_FORTEMEDIA 0x1319
35 #define PCI_DEVICE_ID_FM801_GP 0x0802
36
37 #define HAVE_COOKED
38
39 struct fm801_gp {
40 struct gameport *gameport;
41 struct resource *res_port;
42 };
43
44 #ifdef HAVE_COOKED
45 static int fm801_gp_cooked_read(struct gameport *gameport, int *axes, int *buttons)
46 {
47 unsigned short w;
48
49 w = inw(gameport->io + 2);
50 *buttons = (~w >> 14) & 0x03;
51 axes[0] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
52 w = inw(gameport->io + 4);
53 axes[1] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
54 w = inw(gameport->io + 6);
55 *buttons |= ((~w >> 14) & 0x03) << 2;
56 axes[2] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
57 w = inw(gameport->io + 8);
58 axes[3] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
59 outw(0xff, gameport->io); /* reset */
60
61 return 0;
62 }
63 #endif
64
65 static int fm801_gp_open(struct gameport *gameport, int mode)
66 {
67 switch (mode) {
68 #ifdef HAVE_COOKED
69 case GAMEPORT_MODE_COOKED:
70 return 0;
71 #endif
72 case GAMEPORT_MODE_RAW:
73 return 0;
74 default:
75 return -1;
76 }
77
78 return 0;
79 }
80
81 static int __devinit fm801_gp_probe(struct pci_dev *pci, const struct pci_device_id *id)
82 {
83 struct fm801_gp *gp;
84 struct gameport *port;
85 int error;
86
87 gp = kzalloc(sizeof(struct fm801_gp), GFP_KERNEL);
88 port = gameport_allocate_port();
89 if (!gp || !port) {
90 printk(KERN_ERR "fm801-gp: Memory allocation failed\n");
91 error = -ENOMEM;
92 goto err_out_free;
93 }
94
95 error = pci_enable_device(pci);
96 if (error)
97 goto err_out_free;
98
99 port->open = fm801_gp_open;
100 #ifdef HAVE_COOKED
101 port->cooked_read = fm801_gp_cooked_read;
102 #endif
103 gameport_set_name(port, "FM801");
104 gameport_set_phys(port, "pci%s/gameport0", pci_name(pci));
105 port->dev.parent = &pci->dev;
106 port->io = pci_resource_start(pci, 0);
107
108 gp->gameport = port;
109 gp->res_port = request_region(port->io, 0x10, "FM801 GP");
110 if (!gp->res_port) {
111 printk(KERN_DEBUG "fm801-gp: unable to grab region 0x%x-0x%x\n",
112 port->io, port->io + 0x0f);
113 error = -EBUSY;
114 goto err_out_disable_dev;
115 }
116
117 pci_set_drvdata(pci, gp);
118
119 outb(0x60, port->io + 0x0d); /* enable joystick 1 and 2 */
120 gameport_register_port(port);
121
122 return 0;
123
124 err_out_disable_dev:
125 pci_disable_device(pci);
126 err_out_free:
127 gameport_free_port(port);
128 kfree(gp);
129 return error;
130 }
131
132 static void __devexit fm801_gp_remove(struct pci_dev *pci)
133 {
134 struct fm801_gp *gp = pci_get_drvdata(pci);
135
136 if (gp) {
137 gameport_unregister_port(gp->gameport);
138 release_resource(gp->res_port);
139 kfree(gp);
140 }
141 }
142
143 static struct pci_device_id fm801_gp_id_table[] = {
144 { PCI_VENDOR_ID_FORTEMEDIA, PCI_DEVICE_ID_FM801_GP, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
145 { 0 }
146 };
147
148 static struct pci_driver fm801_gp_driver = {
149 .name = "FM801_gameport",
150 .id_table = fm801_gp_id_table,
151 .probe = fm801_gp_probe,
152 .remove = __devexit_p(fm801_gp_remove),
153 };
154
155 static int __init fm801_gp_init(void)
156 {
157 return pci_register_driver(&fm801_gp_driver);
158 }
159
160 static void __exit fm801_gp_exit(void)
161 {
162 pci_unregister_driver(&fm801_gp_driver);
163 }
164
165 module_init(fm801_gp_init);
166 module_exit(fm801_gp_exit);
167
168 MODULE_DEVICE_TABLE(pci, fm801_gp_id_table);
169
170 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
171 MODULE_LICENSE("GPL");
172
|
This page was automatically generated by the
LXR engine.
|