Linux v2.6.15-rc7
[pohmelfs.git] / drivers / input / gameport / fm801-gp.c
blob47e93daa0fa7c498aec5ae237135126d0ef2e040
1 /*
2 * FM801 gameport driver for Linux
4 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
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.
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.
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.
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>
34 #define PCI_VENDOR_ID_FORTEMEDIA 0x1319
35 #define PCI_DEVICE_ID_FM801_GP 0x0802
37 #define HAVE_COOKED
39 struct fm801_gp {
40 struct gameport *gameport;
41 struct resource *res_port;
44 #ifdef HAVE_COOKED
45 static int fm801_gp_cooked_read(struct gameport *gameport, int *axes, int *buttons)
47 unsigned short w;
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 */
61 return 0;
63 #endif
65 static int fm801_gp_open(struct gameport *gameport, int mode)
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;
78 return 0;
81 static int __devinit fm801_gp_probe(struct pci_dev *pci, const struct pci_device_id *id)
83 struct fm801_gp *gp;
84 struct gameport *port;
86 gp = kzalloc(sizeof(struct fm801_gp), GFP_KERNEL);
87 port = gameport_allocate_port();
88 if (!gp || !port) {
89 printk(KERN_ERR "fm801-gp: Memory allocation failed\n");
90 kfree(gp);
91 gameport_free_port(port);
92 return -ENOMEM;
95 pci_enable_device(pci);
97 port->open = fm801_gp_open;
98 #ifdef HAVE_COOKED
99 port->cooked_read = fm801_gp_cooked_read;
100 #endif
101 gameport_set_name(port, "FM801");
102 gameport_set_phys(port, "pci%s/gameport0", pci_name(pci));
103 port->dev.parent = &pci->dev;
104 port->io = pci_resource_start(pci, 0);
106 gp->gameport = port;
107 gp->res_port = request_region(port->io, 0x10, "FM801 GP");
108 if (!gp->res_port) {
109 kfree(gp);
110 gameport_free_port(port);
111 printk(KERN_DEBUG "fm801-gp: unable to grab region 0x%x-0x%x\n",
112 port->io, port->io + 0x0f);
113 return -EBUSY;
116 pci_set_drvdata(pci, gp);
118 outb(0x60, port->io + 0x0d); /* enable joystick 1 and 2 */
119 gameport_register_port(port);
121 return 0;
124 static void __devexit fm801_gp_remove(struct pci_dev *pci)
126 struct fm801_gp *gp = pci_get_drvdata(pci);
128 if (gp) {
129 gameport_unregister_port(gp->gameport);
130 release_resource(gp->res_port);
131 kfree(gp);
135 static struct pci_device_id fm801_gp_id_table[] = {
136 { PCI_VENDOR_ID_FORTEMEDIA, PCI_DEVICE_ID_FM801_GP, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
137 { 0 }
140 static struct pci_driver fm801_gp_driver = {
141 .name = "FM801_gameport",
142 .id_table = fm801_gp_id_table,
143 .probe = fm801_gp_probe,
144 .remove = __devexit_p(fm801_gp_remove),
147 static int __init fm801_gp_init(void)
149 return pci_register_driver(&fm801_gp_driver);
152 static void __exit fm801_gp_exit(void)
154 pci_unregister_driver(&fm801_gp_driver);
157 module_init(fm801_gp_init);
158 module_exit(fm801_gp_exit);
160 MODULE_DEVICE_TABLE(pci, fm801_gp_id_table);
162 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
163 MODULE_LICENSE("GPL");