2 * $Id: turbografx.c,v 1.14 2002/01/22 20:30:39 vojtech Exp $
4 * Copyright (c) 1998-2001 Vojtech Pavlik
6 * Based on the work of:
11 * TurboGraFX parallel port interface driver for Linux.
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.
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.
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
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
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>
41 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
42 MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
43 MODULE_LICENSE("GPL");
45 static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
46 static int tgfx_nargs __initdata = 0;
47 module_param_array_named(map, tgfx, int, &tgfx_nargs, 0);
48 MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
50 static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
51 static int tgfx_nargs_2 __initdata = 0;
52 module_param_array_named(map2, tgfx_2, int, &tgfx_nargs_2, 0);
53 MODULE_PARM_DESC(map2, "Describes second set of devices");
55 static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
56 static int tgfx_nargs_3 __initdata = 0;
57 module_param_array_named(map3, tgfx_3, int, &tgfx_nargs_3, 0);
58 MODULE_PARM_DESC(map3, "Describes third set of devices");
60 __obsolete_setup("tgfx=");
61 __obsolete_setup("tgfx_2=");
62 __obsolete_setup("tgfx_3=");
64 #define TGFX_REFRESH_TIME HZ/100 /* 10 ms */
66 #define TGFX_TRIGGER 0x08
68 #define TGFX_DOWN 0x20
69 #define TGFX_LEFT 0x40
70 #define TGFX_RIGHT 0x80
72 #define TGFX_THUMB 0x02
73 #define TGFX_THUMB2 0x04
75 #define TGFX_TOP2 0x08
77 static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
78 static char *tgfx_name = "TurboGraFX Multisystem joystick";
82 struct timer_list timer;
83 struct input_dev dev[7];
91 * tgfx_timer() reads and analyzes TurboGraFX joystick data.
94 static void tgfx_timer(unsigned long private)
96 struct tgfx *tgfx = (void *) private;
97 struct input_dev *dev;
100 for (i = 0; i < 7; i++)
101 if (tgfx->sticks & (1 << i)) {
105 parport_write_data(tgfx->pd->port, ~(1 << i));
106 data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
107 data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */
109 input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
110 input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP ));
112 input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
113 input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB ));
114 input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 ));
115 input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP ));
116 input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 ));
121 mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
124 static int tgfx_open(struct input_dev *dev)
126 struct tgfx *tgfx = dev->private;
129 err = down_interruptible(&tgfx->sem);
134 parport_claim(tgfx->pd);
135 parport_write_control(tgfx->pd->port, 0x04);
136 mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
143 static void tgfx_close(struct input_dev *dev)
145 struct tgfx *tgfx = dev->private;
149 del_timer_sync(&tgfx->timer);
150 parport_write_control(tgfx->pd->port, 0x00);
151 parport_release(tgfx->pd);
157 * tgfx_probe() probes for tg gamepads.
160 static struct tgfx __init *tgfx_probe(int *config, int nargs)
170 printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
174 pp = parport_find_number(config[0]);
177 printk(KERN_ERR "turbografx.c: no such parport\n");
181 if (!(tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL))) {
182 parport_put_port(pp);
186 init_MUTEX(&tgfx->sem);
188 tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
190 parport_put_port(pp);
193 printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
198 init_timer(&tgfx->timer);
199 tgfx->timer.data = (long) tgfx;
200 tgfx->timer.function = tgfx_timer;
204 for (i = 0; i < nargs - 1; i++)
205 if (config[i+1] > 0 && config[i+1] < 6) {
207 tgfx->sticks |= (1 << i);
209 tgfx->dev[i].private = tgfx;
210 tgfx->dev[i].open = tgfx_open;
211 tgfx->dev[i].close = tgfx_close;
213 sprintf(tgfx->phys[i], "%s/input0", tgfx->pd->port->name);
215 tgfx->dev[i].name = tgfx_name;
216 tgfx->dev[i].phys = tgfx->phys[i];
217 tgfx->dev[i].id.bustype = BUS_PARPORT;
218 tgfx->dev[i].id.vendor = 0x0003;
219 tgfx->dev[i].id.product = config[i+1];
220 tgfx->dev[i].id.version = 0x0100;
222 tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
223 tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
225 for (j = 0; j < config[i+1]; j++)
226 set_bit(tgfx_buttons[j], tgfx->dev[i].keybit);
228 tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1;
229 tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1;
231 input_register_device(tgfx->dev + i);
232 printk(KERN_INFO "input: %d-button Multisystem joystick on %s\n",
233 config[i+1], tgfx->pd->port->name);
237 parport_unregister_device(tgfx->pd);
245 static int __init tgfx_init(void)
247 tgfx_base[0] = tgfx_probe(tgfx, tgfx_nargs);
248 tgfx_base[1] = tgfx_probe(tgfx_2, tgfx_nargs_2);
249 tgfx_base[2] = tgfx_probe(tgfx_3, tgfx_nargs_3);
251 if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2])
257 static void __exit tgfx_exit(void)
261 for (i = 0; i < 3; i++)
263 for (j = 0; j < 7; j++)
264 if (tgfx_base[i]->sticks & (1 << j))
265 input_unregister_device(tgfx_base[i]->dev + j);
266 parport_unregister_device(tgfx_base[i]->pd);
270 module_init(tgfx_init);
271 module_exit(tgfx_exit);