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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/input/joystick/turbografx.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/input/joystick/turbografx.c')
-rw-r--r--drivers/input/joystick/turbografx.c258
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/input/joystick/turbografx.c b/drivers/input/joystick/turbografx.c
new file mode 100644
index 000000000000..dd88b9cb49fa
--- /dev/null
+++ b/drivers/input/joystick/turbografx.c
@@ -0,0 +1,258 @@
1/*
2 * $Id: turbografx.c,v 1.14 2002/01/22 20:30:39 vojtech Exp $
3 *
4 * Copyright (c) 1998-2001 Vojtech Pavlik
5 *
6 * Based on the work of:
7 * Steffen Schwenke
8 */
9
10/*
11 * TurboGraFX parallel port interface driver for Linux.
12 */
13
14/*
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 *
29 * Should you need to contact me, the author, you can do so either by
30 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
31 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
32 */
33
34#include <linux/kernel.h>
35#include <linux/parport.h>
36#include <linux/input.h>
37#include <linux/module.h>
38#include <linux/moduleparam.h>
39#include <linux/init.h>
40
41MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
42MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
43MODULE_LICENSE("GPL");
44
45static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
46static int tgfx_nargs __initdata = 0;
47module_param_array_named(map, tgfx, int, &tgfx_nargs, 0);
48MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
49
50static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
51static int tgfx_nargs_2 __initdata = 0;
52module_param_array_named(map2, tgfx_2, int, &tgfx_nargs_2, 0);
53MODULE_PARM_DESC(map2, "Describes second set of devices");
54
55static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
56static int tgfx_nargs_3 __initdata = 0;
57module_param_array_named(map3, tgfx_3, int, &tgfx_nargs_3, 0);
58MODULE_PARM_DESC(map3, "Describes third set of devices");
59
60__obsolete_setup("tgfx=");
61__obsolete_setup("tgfx_2=");
62__obsolete_setup("tgfx_3=");
63
64#define TGFX_REFRESH_TIME HZ/100 /* 10 ms */
65
66#define TGFX_TRIGGER 0x08
67#define TGFX_UP 0x10
68#define TGFX_DOWN 0x20
69#define TGFX_LEFT 0x40
70#define TGFX_RIGHT 0x80
71
72#define TGFX_THUMB 0x02
73#define TGFX_THUMB2 0x04
74#define TGFX_TOP 0x01
75#define TGFX_TOP2 0x08
76
77static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
78static char *tgfx_name = "TurboGraFX Multisystem joystick";
79
80static struct tgfx {
81 struct pardevice *pd;
82 struct timer_list timer;
83 struct input_dev dev[7];
84 char phys[7][32];
85 int sticks;
86 int used;
87} *tgfx_base[3];
88
89/*
90 * tgfx_timer() reads and analyzes TurboGraFX joystick data.
91 */
92
93static void tgfx_timer(unsigned long private)
94{
95 struct tgfx *tgfx = (void *) private;
96 struct input_dev *dev;
97 int data1, data2, i;
98
99 for (i = 0; i < 7; i++)
100 if (tgfx->sticks & (1 << i)) {
101
102 dev = tgfx->dev + i;
103
104 parport_write_data(tgfx->pd->port, ~(1 << i));
105 data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
106 data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */
107
108 input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
109 input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP ));
110
111 input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
112 input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB ));
113 input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 ));
114 input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP ));
115 input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 ));
116
117 input_sync(dev);
118 }
119
120 mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
121}
122
123static int tgfx_open(struct input_dev *dev)
124{
125 struct tgfx *tgfx = dev->private;
126 if (!tgfx->used++) {
127 parport_claim(tgfx->pd);
128 parport_write_control(tgfx->pd->port, 0x04);
129 mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
130 }
131 return 0;
132}
133
134static void tgfx_close(struct input_dev *dev)
135{
136 struct tgfx *tgfx = dev->private;
137 if (!--tgfx->used) {
138 del_timer(&tgfx->timer);
139 parport_write_control(tgfx->pd->port, 0x00);
140 parport_release(tgfx->pd);
141 }
142}
143
144/*
145 * tgfx_probe() probes for tg gamepads.
146 */
147
148static struct tgfx __init *tgfx_probe(int *config, int nargs)
149{
150 struct tgfx *tgfx;
151 struct parport *pp;
152 int i, j;
153
154 if (config[0] < 0)
155 return NULL;
156
157 if (nargs < 2) {
158 printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
159 return NULL;
160 }
161
162 pp = parport_find_number(config[0]);
163
164 if (!pp) {
165 printk(KERN_ERR "turbografx.c: no such parport\n");
166 return NULL;
167 }
168
169 if (!(tgfx = kmalloc(sizeof(struct tgfx), GFP_KERNEL))) {
170 parport_put_port(pp);
171 return NULL;
172 }
173 memset(tgfx, 0, sizeof(struct tgfx));
174
175 tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
176
177 parport_put_port(pp);
178
179 if (!tgfx->pd) {
180 printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
181 kfree(tgfx);
182 return NULL;
183 }
184
185 init_timer(&tgfx->timer);
186 tgfx->timer.data = (long) tgfx;
187 tgfx->timer.function = tgfx_timer;
188
189 tgfx->sticks = 0;
190
191 for (i = 0; i < nargs - 1; i++)
192 if (config[i+1] > 0 && config[i+1] < 6) {
193
194 tgfx->sticks |= (1 << i);
195
196 tgfx->dev[i].private = tgfx;
197 tgfx->dev[i].open = tgfx_open;
198 tgfx->dev[i].close = tgfx_close;
199
200 sprintf(tgfx->phys[i], "%s/input0", tgfx->pd->port->name);
201
202 tgfx->dev[i].name = tgfx_name;
203 tgfx->dev[i].phys = tgfx->phys[i];
204 tgfx->dev[i].id.bustype = BUS_PARPORT;
205 tgfx->dev[i].id.vendor = 0x0003;
206 tgfx->dev[i].id.product = config[i+1];
207 tgfx->dev[i].id.version = 0x0100;
208
209 tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
210 tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
211
212 for (j = 0; j < config[i+1]; j++)
213 set_bit(tgfx_buttons[j], tgfx->dev[i].keybit);
214
215 tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1;
216 tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1;
217
218 input_register_device(tgfx->dev + i);
219 printk(KERN_INFO "input: %d-button Multisystem joystick on %s\n",
220 config[i+1], tgfx->pd->port->name);
221 }
222
223 if (!tgfx->sticks) {
224 parport_unregister_device(tgfx->pd);
225 kfree(tgfx);
226 return NULL;
227 }
228
229 return tgfx;
230}
231
232static int __init tgfx_init(void)
233{
234 tgfx_base[0] = tgfx_probe(tgfx, tgfx_nargs);
235 tgfx_base[1] = tgfx_probe(tgfx_2, tgfx_nargs_2);
236 tgfx_base[2] = tgfx_probe(tgfx_3, tgfx_nargs_3);
237
238 if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2])
239 return 0;
240
241 return -ENODEV;
242}
243
244static void __exit tgfx_exit(void)
245{
246 int i, j;
247
248 for (i = 0; i < 3; i++)
249 if (tgfx_base[i]) {
250 for (j = 0; j < 7; j++)
251 if (tgfx_base[i]->sticks & (1 << j))
252 input_unregister_device(tgfx_base[i]->dev + j);
253 parport_unregister_device(tgfx_base[i]->pd);
254 }
255}
256
257module_init(tgfx_init);
258module_exit(tgfx_exit);