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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (c) 1998-2001 Vojtech Pavlik |
3 | * | |
4 | * Based on the work of: | |
5 | * Steffen Schwenke | |
6 | */ | |
7 | ||
8 | /* | |
9 | * TurboGraFX parallel port interface driver for Linux. | |
10 | */ | |
11 | ||
12 | /* | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
26 | * | |
27 | * Should you need to contact me, the author, you can do so either by | |
28 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
29 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
30 | */ | |
31 | ||
32 | #include <linux/kernel.h> | |
33 | #include <linux/parport.h> | |
34 | #include <linux/input.h> | |
35 | #include <linux/module.h> | |
1da177e4 | 36 | #include <linux/init.h> |
72ba9f0c | 37 | #include <linux/mutex.h> |
1da177e4 LT |
38 | |
39 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
40 | MODULE_DESCRIPTION("TurboGraFX parallel port interface driver"); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
17dd3f0f DT |
43 | #define TGFX_MAX_PORTS 3 |
44 | #define TGFX_MAX_DEVICES 7 | |
1da177e4 | 45 | |
17dd3f0f DT |
46 | struct tgfx_config { |
47 | int args[TGFX_MAX_DEVICES + 1]; | |
78167236 | 48 | unsigned int nargs; |
17dd3f0f DT |
49 | }; |
50 | ||
78167236 | 51 | static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS] __initdata; |
1da177e4 | 52 | |
78167236 | 53 | module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0); |
17dd3f0f | 54 | MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>"); |
78167236 | 55 | module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0); |
17dd3f0f | 56 | MODULE_PARM_DESC(map2, "Describes second set of devices"); |
78167236 | 57 | module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0); |
1da177e4 LT |
58 | MODULE_PARM_DESC(map3, "Describes third set of devices"); |
59 | ||
1da177e4 LT |
60 | #define TGFX_REFRESH_TIME HZ/100 /* 10 ms */ |
61 | ||
62 | #define TGFX_TRIGGER 0x08 | |
63 | #define TGFX_UP 0x10 | |
64 | #define TGFX_DOWN 0x20 | |
65 | #define TGFX_LEFT 0x40 | |
66 | #define TGFX_RIGHT 0x80 | |
67 | ||
68 | #define TGFX_THUMB 0x02 | |
69 | #define TGFX_THUMB2 0x04 | |
70 | #define TGFX_TOP 0x01 | |
71 | #define TGFX_TOP2 0x08 | |
72 | ||
73 | static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 }; | |
1da177e4 LT |
74 | |
75 | static struct tgfx { | |
76 | struct pardevice *pd; | |
77 | struct timer_list timer; | |
17dd3f0f DT |
78 | struct input_dev *dev[TGFX_MAX_DEVICES]; |
79 | char name[TGFX_MAX_DEVICES][64]; | |
80 | char phys[TGFX_MAX_DEVICES][32]; | |
1da177e4 LT |
81 | int sticks; |
82 | int used; | |
72ba9f0c | 83 | struct mutex sem; |
17dd3f0f | 84 | } *tgfx_base[TGFX_MAX_PORTS]; |
1da177e4 LT |
85 | |
86 | /* | |
87 | * tgfx_timer() reads and analyzes TurboGraFX joystick data. | |
88 | */ | |
89 | ||
90 | static void tgfx_timer(unsigned long private) | |
91 | { | |
92 | struct tgfx *tgfx = (void *) private; | |
93 | struct input_dev *dev; | |
94 | int data1, data2, i; | |
95 | ||
96 | for (i = 0; i < 7; i++) | |
97 | if (tgfx->sticks & (1 << i)) { | |
98 | ||
17dd3f0f | 99 | dev = tgfx->dev[i]; |
1da177e4 LT |
100 | |
101 | parport_write_data(tgfx->pd->port, ~(1 << i)); | |
102 | data1 = parport_read_status(tgfx->pd->port) ^ 0x7f; | |
103 | data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */ | |
104 | ||
105 | input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT)); | |
106 | input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP )); | |
107 | ||
108 | input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER)); | |
109 | input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB )); | |
110 | input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 )); | |
111 | input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP )); | |
112 | input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 )); | |
113 | ||
114 | input_sync(dev); | |
115 | } | |
116 | ||
117 | mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); | |
118 | } | |
119 | ||
120 | static int tgfx_open(struct input_dev *dev) | |
121 | { | |
8715c1cf | 122 | struct tgfx *tgfx = input_get_drvdata(dev); |
8b1a198b DT |
123 | int err; |
124 | ||
72ba9f0c | 125 | err = mutex_lock_interruptible(&tgfx->sem); |
8b1a198b DT |
126 | if (err) |
127 | return err; | |
128 | ||
ab0c3443 | 129 | if (!tgfx->used++) { |
1da177e4 LT |
130 | parport_claim(tgfx->pd); |
131 | parport_write_control(tgfx->pd->port, 0x04); | |
ab0c3443 | 132 | mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); |
1da177e4 | 133 | } |
8b1a198b | 134 | |
72ba9f0c | 135 | mutex_unlock(&tgfx->sem); |
ab0c3443 | 136 | return 0; |
1da177e4 LT |
137 | } |
138 | ||
139 | static void tgfx_close(struct input_dev *dev) | |
140 | { | |
8715c1cf | 141 | struct tgfx *tgfx = input_get_drvdata(dev); |
8b1a198b | 142 | |
72ba9f0c | 143 | mutex_lock(&tgfx->sem); |
ab0c3443 | 144 | if (!--tgfx->used) { |
8b1a198b | 145 | del_timer_sync(&tgfx->timer); |
1da177e4 | 146 | parport_write_control(tgfx->pd->port, 0x00); |
ab0c3443 | 147 | parport_release(tgfx->pd); |
1da177e4 | 148 | } |
72ba9f0c | 149 | mutex_unlock(&tgfx->sem); |
1da177e4 LT |
150 | } |
151 | ||
17dd3f0f DT |
152 | |
153 | ||
1da177e4 LT |
154 | /* |
155 | * tgfx_probe() probes for tg gamepads. | |
156 | */ | |
157 | ||
17dd3f0f | 158 | static struct tgfx __init *tgfx_probe(int parport, int *n_buttons, int n_devs) |
1da177e4 LT |
159 | { |
160 | struct tgfx *tgfx; | |
17dd3f0f | 161 | struct input_dev *input_dev; |
1da177e4 | 162 | struct parport *pp; |
17dd3f0f | 163 | struct pardevice *pd; |
1da177e4 | 164 | int i, j; |
17dd3f0f | 165 | int err; |
1da177e4 | 166 | |
17dd3f0f | 167 | pp = parport_find_number(parport); |
1da177e4 LT |
168 | if (!pp) { |
169 | printk(KERN_ERR "turbografx.c: no such parport\n"); | |
17dd3f0f DT |
170 | err = -EINVAL; |
171 | goto err_out; | |
1da177e4 LT |
172 | } |
173 | ||
17dd3f0f DT |
174 | pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); |
175 | if (!pd) { | |
176 | printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n"); | |
177 | err = -EBUSY; | |
178 | goto err_put_pp; | |
1da177e4 | 179 | } |
8b1a198b | 180 | |
17dd3f0f DT |
181 | tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL); |
182 | if (!tgfx) { | |
183 | printk(KERN_ERR "turbografx.c: Not enough memory\n"); | |
184 | err = -ENOMEM; | |
185 | goto err_unreg_pardev; | |
1da177e4 LT |
186 | } |
187 | ||
72ba9f0c | 188 | mutex_init(&tgfx->sem); |
17dd3f0f | 189 | tgfx->pd = pd; |
1da177e4 LT |
190 | init_timer(&tgfx->timer); |
191 | tgfx->timer.data = (long) tgfx; | |
192 | tgfx->timer.function = tgfx_timer; | |
193 | ||
17dd3f0f DT |
194 | for (i = 0; i < n_devs; i++) { |
195 | if (n_buttons[i] < 1) | |
196 | continue; | |
1da177e4 | 197 | |
17dd3f0f DT |
198 | if (n_buttons[i] > 6) { |
199 | printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]); | |
200 | err = -EINVAL; | |
ab52cd66 | 201 | goto err_unreg_devs; |
17dd3f0f | 202 | } |
1da177e4 | 203 | |
17dd3f0f DT |
204 | tgfx->dev[i] = input_dev = input_allocate_device(); |
205 | if (!input_dev) { | |
206 | printk(KERN_ERR "turbografx.c: Not enough memory for input device\n"); | |
207 | err = -ENOMEM; | |
ab52cd66 | 208 | goto err_unreg_devs; |
17dd3f0f | 209 | } |
1da177e4 | 210 | |
17dd3f0f DT |
211 | tgfx->sticks |= (1 << i); |
212 | snprintf(tgfx->name[i], sizeof(tgfx->name[i]), | |
213 | "TurboGraFX %d-button Multisystem joystick", n_buttons[i]); | |
214 | snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]), | |
215 | "%s/input%d", tgfx->pd->port->name, i); | |
1da177e4 | 216 | |
17dd3f0f DT |
217 | input_dev->name = tgfx->name[i]; |
218 | input_dev->phys = tgfx->phys[i]; | |
219 | input_dev->id.bustype = BUS_PARPORT; | |
220 | input_dev->id.vendor = 0x0003; | |
221 | input_dev->id.product = n_buttons[i]; | |
222 | input_dev->id.version = 0x0100; | |
1da177e4 | 223 | |
8715c1cf DT |
224 | input_set_drvdata(input_dev, tgfx); |
225 | ||
17dd3f0f DT |
226 | input_dev->open = tgfx_open; |
227 | input_dev->close = tgfx_close; | |
1da177e4 | 228 | |
7b19ada2 | 229 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
17dd3f0f DT |
230 | input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0); |
231 | input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0); | |
1da177e4 | 232 | |
17dd3f0f DT |
233 | for (j = 0; j < n_buttons[i]; j++) |
234 | set_bit(tgfx_buttons[j], input_dev->keybit); | |
1da177e4 | 235 | |
ab52cd66 DT |
236 | err = input_register_device(tgfx->dev[i]); |
237 | if (err) | |
238 | goto err_free_dev; | |
17dd3f0f | 239 | } |
1da177e4 LT |
240 | |
241 | if (!tgfx->sticks) { | |
17dd3f0f DT |
242 | printk(KERN_ERR "turbografx.c: No valid devices specified\n"); |
243 | err = -EINVAL; | |
244 | goto err_free_tgfx; | |
1da177e4 LT |
245 | } |
246 | ||
247 | return tgfx; | |
17dd3f0f | 248 | |
ab52cd66 DT |
249 | err_free_dev: |
250 | input_free_device(tgfx->dev[i]); | |
251 | err_unreg_devs: | |
17dd3f0f | 252 | while (--i >= 0) |
ab52cd66 DT |
253 | if (tgfx->dev[i]) |
254 | input_unregister_device(tgfx->dev[i]); | |
17dd3f0f DT |
255 | err_free_tgfx: |
256 | kfree(tgfx); | |
257 | err_unreg_pardev: | |
258 | parport_unregister_device(pd); | |
259 | err_put_pp: | |
260 | parport_put_port(pp); | |
261 | err_out: | |
262 | return ERR_PTR(err); | |
263 | } | |
264 | ||
ab52cd66 | 265 | static void tgfx_remove(struct tgfx *tgfx) |
17dd3f0f DT |
266 | { |
267 | int i; | |
268 | ||
269 | for (i = 0; i < TGFX_MAX_DEVICES; i++) | |
270 | if (tgfx->dev[i]) | |
271 | input_unregister_device(tgfx->dev[i]); | |
272 | parport_unregister_device(tgfx->pd); | |
273 | kfree(tgfx); | |
1da177e4 LT |
274 | } |
275 | ||
276 | static int __init tgfx_init(void) | |
277 | { | |
17dd3f0f DT |
278 | int i; |
279 | int have_dev = 0; | |
280 | int err = 0; | |
281 | ||
282 | for (i = 0; i < TGFX_MAX_PORTS; i++) { | |
78167236 | 283 | if (tgfx_cfg[i].nargs == 0 || tgfx_cfg[i].args[0] < 0) |
17dd3f0f DT |
284 | continue; |
285 | ||
78167236 | 286 | if (tgfx_cfg[i].nargs < 2) { |
17dd3f0f DT |
287 | printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n"); |
288 | err = -EINVAL; | |
289 | break; | |
290 | } | |
291 | ||
78167236 DT |
292 | tgfx_base[i] = tgfx_probe(tgfx_cfg[i].args[0], |
293 | tgfx_cfg[i].args + 1, | |
294 | tgfx_cfg[i].nargs - 1); | |
17dd3f0f DT |
295 | if (IS_ERR(tgfx_base[i])) { |
296 | err = PTR_ERR(tgfx_base[i]); | |
297 | break; | |
298 | } | |
299 | ||
300 | have_dev = 1; | |
301 | } | |
1da177e4 | 302 | |
17dd3f0f DT |
303 | if (err) { |
304 | while (--i >= 0) | |
ab52cd66 DT |
305 | if (tgfx_base[i]) |
306 | tgfx_remove(tgfx_base[i]); | |
17dd3f0f DT |
307 | return err; |
308 | } | |
1da177e4 | 309 | |
17dd3f0f | 310 | return have_dev ? 0 : -ENODEV; |
1da177e4 LT |
311 | } |
312 | ||
313 | static void __exit tgfx_exit(void) | |
314 | { | |
17dd3f0f | 315 | int i; |
1da177e4 | 316 | |
17dd3f0f DT |
317 | for (i = 0; i < TGFX_MAX_PORTS; i++) |
318 | if (tgfx_base[i]) | |
319 | tgfx_remove(tgfx_base[i]); | |
1da177e4 LT |
320 | } |
321 | ||
322 | module_init(tgfx_init); | |
323 | module_exit(tgfx_exit); |