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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> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
1da177e4 LT |
39 | |
40 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
41 | MODULE_DESCRIPTION("TurboGraFX parallel port interface driver"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
17dd3f0f DT |
44 | #define TGFX_MAX_PORTS 3 |
45 | #define TGFX_MAX_DEVICES 7 | |
1da177e4 | 46 | |
17dd3f0f DT |
47 | struct tgfx_config { |
48 | int args[TGFX_MAX_DEVICES + 1]; | |
78167236 | 49 | unsigned int nargs; |
17dd3f0f DT |
50 | }; |
51 | ||
4de27a63 | 52 | static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS]; |
1da177e4 | 53 | |
78167236 | 54 | module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0); |
17dd3f0f | 55 | MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>"); |
78167236 | 56 | module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0); |
17dd3f0f | 57 | MODULE_PARM_DESC(map2, "Describes second set of devices"); |
78167236 | 58 | module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0); |
1da177e4 LT |
59 | MODULE_PARM_DESC(map3, "Describes third set of devices"); |
60 | ||
1da177e4 LT |
61 | #define TGFX_REFRESH_TIME HZ/100 /* 10 ms */ |
62 | ||
63 | #define TGFX_TRIGGER 0x08 | |
64 | #define TGFX_UP 0x10 | |
65 | #define TGFX_DOWN 0x20 | |
66 | #define TGFX_LEFT 0x40 | |
67 | #define TGFX_RIGHT 0x80 | |
68 | ||
69 | #define TGFX_THUMB 0x02 | |
70 | #define TGFX_THUMB2 0x04 | |
71 | #define TGFX_TOP 0x01 | |
72 | #define TGFX_TOP2 0x08 | |
73 | ||
74 | static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 }; | |
1da177e4 LT |
75 | |
76 | static struct tgfx { | |
77 | struct pardevice *pd; | |
78 | struct timer_list timer; | |
17dd3f0f DT |
79 | struct input_dev *dev[TGFX_MAX_DEVICES]; |
80 | char name[TGFX_MAX_DEVICES][64]; | |
81 | char phys[TGFX_MAX_DEVICES][32]; | |
1da177e4 LT |
82 | int sticks; |
83 | int used; | |
4de27a63 | 84 | int parportno; |
72ba9f0c | 85 | struct mutex sem; |
17dd3f0f | 86 | } *tgfx_base[TGFX_MAX_PORTS]; |
1da177e4 LT |
87 | |
88 | /* | |
89 | * tgfx_timer() reads and analyzes TurboGraFX joystick data. | |
90 | */ | |
91 | ||
e99e88a9 | 92 | static void tgfx_timer(struct timer_list *t) |
1da177e4 | 93 | { |
e99e88a9 | 94 | struct tgfx *tgfx = from_timer(tgfx, t, timer); |
1da177e4 LT |
95 | struct input_dev *dev; |
96 | int data1, data2, i; | |
97 | ||
98 | for (i = 0; i < 7; i++) | |
99 | if (tgfx->sticks & (1 << i)) { | |
100 | ||
17dd3f0f | 101 | dev = tgfx->dev[i]; |
1da177e4 LT |
102 | |
103 | parport_write_data(tgfx->pd->port, ~(1 << i)); | |
104 | data1 = parport_read_status(tgfx->pd->port) ^ 0x7f; | |
105 | data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */ | |
106 | ||
107 | input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT)); | |
108 | input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP )); | |
109 | ||
110 | input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER)); | |
111 | input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB )); | |
112 | input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 )); | |
113 | input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP )); | |
114 | input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 )); | |
115 | ||
116 | input_sync(dev); | |
117 | } | |
118 | ||
119 | mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); | |
120 | } | |
121 | ||
122 | static int tgfx_open(struct input_dev *dev) | |
123 | { | |
8715c1cf | 124 | struct tgfx *tgfx = input_get_drvdata(dev); |
8b1a198b DT |
125 | int err; |
126 | ||
72ba9f0c | 127 | err = mutex_lock_interruptible(&tgfx->sem); |
8b1a198b DT |
128 | if (err) |
129 | return err; | |
130 | ||
ab0c3443 | 131 | if (!tgfx->used++) { |
1da177e4 LT |
132 | parport_claim(tgfx->pd); |
133 | parport_write_control(tgfx->pd->port, 0x04); | |
ab0c3443 | 134 | mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); |
1da177e4 | 135 | } |
8b1a198b | 136 | |
72ba9f0c | 137 | mutex_unlock(&tgfx->sem); |
ab0c3443 | 138 | return 0; |
1da177e4 LT |
139 | } |
140 | ||
141 | static void tgfx_close(struct input_dev *dev) | |
142 | { | |
8715c1cf | 143 | struct tgfx *tgfx = input_get_drvdata(dev); |
8b1a198b | 144 | |
72ba9f0c | 145 | mutex_lock(&tgfx->sem); |
ab0c3443 | 146 | if (!--tgfx->used) { |
8b1a198b | 147 | del_timer_sync(&tgfx->timer); |
1da177e4 | 148 | parport_write_control(tgfx->pd->port, 0x00); |
ab0c3443 | 149 | parport_release(tgfx->pd); |
1da177e4 | 150 | } |
72ba9f0c | 151 | mutex_unlock(&tgfx->sem); |
1da177e4 LT |
152 | } |
153 | ||
17dd3f0f DT |
154 | |
155 | ||
1da177e4 LT |
156 | /* |
157 | * tgfx_probe() probes for tg gamepads. | |
158 | */ | |
159 | ||
4de27a63 | 160 | static void tgfx_attach(struct parport *pp) |
1da177e4 LT |
161 | { |
162 | struct tgfx *tgfx; | |
17dd3f0f | 163 | struct input_dev *input_dev; |
17dd3f0f | 164 | struct pardevice *pd; |
c65cf815 | 165 | int i, j, port_idx; |
4de27a63 SM |
166 | int *n_buttons, n_devs; |
167 | struct pardev_cb tgfx_parport_cb; | |
168 | ||
c65cf815 SM |
169 | for (port_idx = 0; port_idx < TGFX_MAX_PORTS; port_idx++) { |
170 | if (tgfx_cfg[port_idx].nargs == 0 || | |
171 | tgfx_cfg[port_idx].args[0] < 0) | |
4de27a63 | 172 | continue; |
c65cf815 | 173 | if (tgfx_cfg[port_idx].args[0] == pp->number) |
4de27a63 SM |
174 | break; |
175 | } | |
1da177e4 | 176 | |
c65cf815 | 177 | if (port_idx == TGFX_MAX_PORTS) { |
4de27a63 SM |
178 | pr_debug("Not using parport%d.\n", pp->number); |
179 | return; | |
1da177e4 | 180 | } |
c65cf815 SM |
181 | n_buttons = tgfx_cfg[port_idx].args + 1; |
182 | n_devs = tgfx_cfg[port_idx].nargs - 1; | |
1da177e4 | 183 | |
3855e9e4 | 184 | memset(&tgfx_parport_cb, 0, sizeof(tgfx_parport_cb)); |
4de27a63 SM |
185 | tgfx_parport_cb.flags = PARPORT_FLAG_EXCL; |
186 | ||
c65cf815 SM |
187 | pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb, |
188 | port_idx); | |
17dd3f0f | 189 | if (!pd) { |
4de27a63 SM |
190 | pr_err("parport busy already - lp.o loaded?\n"); |
191 | return; | |
1da177e4 | 192 | } |
8b1a198b | 193 | |
17dd3f0f DT |
194 | tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL); |
195 | if (!tgfx) { | |
196 | printk(KERN_ERR "turbografx.c: Not enough memory\n"); | |
17dd3f0f | 197 | goto err_unreg_pardev; |
1da177e4 LT |
198 | } |
199 | ||
72ba9f0c | 200 | mutex_init(&tgfx->sem); |
17dd3f0f | 201 | tgfx->pd = pd; |
4de27a63 | 202 | tgfx->parportno = pp->number; |
e99e88a9 | 203 | timer_setup(&tgfx->timer, tgfx_timer, 0); |
1da177e4 | 204 | |
17dd3f0f DT |
205 | for (i = 0; i < n_devs; i++) { |
206 | if (n_buttons[i] < 1) | |
207 | continue; | |
1da177e4 | 208 | |
c20bc550 | 209 | if (n_buttons[i] > ARRAY_SIZE(tgfx_buttons)) { |
17dd3f0f | 210 | printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]); |
ab52cd66 | 211 | goto err_unreg_devs; |
17dd3f0f | 212 | } |
1da177e4 | 213 | |
17dd3f0f DT |
214 | tgfx->dev[i] = input_dev = input_allocate_device(); |
215 | if (!input_dev) { | |
216 | printk(KERN_ERR "turbografx.c: Not enough memory for input device\n"); | |
ab52cd66 | 217 | goto err_unreg_devs; |
17dd3f0f | 218 | } |
1da177e4 | 219 | |
17dd3f0f DT |
220 | tgfx->sticks |= (1 << i); |
221 | snprintf(tgfx->name[i], sizeof(tgfx->name[i]), | |
222 | "TurboGraFX %d-button Multisystem joystick", n_buttons[i]); | |
223 | snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]), | |
224 | "%s/input%d", tgfx->pd->port->name, i); | |
1da177e4 | 225 | |
17dd3f0f DT |
226 | input_dev->name = tgfx->name[i]; |
227 | input_dev->phys = tgfx->phys[i]; | |
228 | input_dev->id.bustype = BUS_PARPORT; | |
229 | input_dev->id.vendor = 0x0003; | |
230 | input_dev->id.product = n_buttons[i]; | |
231 | input_dev->id.version = 0x0100; | |
1da177e4 | 232 | |
8715c1cf DT |
233 | input_set_drvdata(input_dev, tgfx); |
234 | ||
17dd3f0f DT |
235 | input_dev->open = tgfx_open; |
236 | input_dev->close = tgfx_close; | |
1da177e4 | 237 | |
7b19ada2 | 238 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
17dd3f0f DT |
239 | input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0); |
240 | input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0); | |
1da177e4 | 241 | |
17dd3f0f DT |
242 | for (j = 0; j < n_buttons[i]; j++) |
243 | set_bit(tgfx_buttons[j], input_dev->keybit); | |
1da177e4 | 244 | |
4de27a63 | 245 | if (input_register_device(tgfx->dev[i])) |
ab52cd66 | 246 | goto err_free_dev; |
17dd3f0f | 247 | } |
1da177e4 LT |
248 | |
249 | if (!tgfx->sticks) { | |
17dd3f0f | 250 | printk(KERN_ERR "turbografx.c: No valid devices specified\n"); |
17dd3f0f | 251 | goto err_free_tgfx; |
1da177e4 LT |
252 | } |
253 | ||
c65cf815 | 254 | tgfx_base[port_idx] = tgfx; |
4de27a63 | 255 | return; |
17dd3f0f | 256 | |
ab52cd66 DT |
257 | err_free_dev: |
258 | input_free_device(tgfx->dev[i]); | |
259 | err_unreg_devs: | |
17dd3f0f | 260 | while (--i >= 0) |
ab52cd66 DT |
261 | if (tgfx->dev[i]) |
262 | input_unregister_device(tgfx->dev[i]); | |
17dd3f0f DT |
263 | err_free_tgfx: |
264 | kfree(tgfx); | |
265 | err_unreg_pardev: | |
266 | parport_unregister_device(pd); | |
17dd3f0f DT |
267 | } |
268 | ||
4de27a63 | 269 | static void tgfx_detach(struct parport *port) |
17dd3f0f DT |
270 | { |
271 | int i; | |
4de27a63 SM |
272 | struct tgfx *tgfx; |
273 | ||
274 | for (i = 0; i < TGFX_MAX_PORTS; i++) { | |
275 | if (tgfx_base[i] && tgfx_base[i]->parportno == port->number) | |
276 | break; | |
277 | } | |
278 | ||
279 | if (i == TGFX_MAX_PORTS) | |
280 | return; | |
281 | ||
282 | tgfx = tgfx_base[i]; | |
283 | tgfx_base[i] = NULL; | |
17dd3f0f DT |
284 | |
285 | for (i = 0; i < TGFX_MAX_DEVICES; i++) | |
286 | if (tgfx->dev[i]) | |
287 | input_unregister_device(tgfx->dev[i]); | |
288 | parport_unregister_device(tgfx->pd); | |
289 | kfree(tgfx); | |
1da177e4 LT |
290 | } |
291 | ||
4de27a63 SM |
292 | static struct parport_driver tgfx_parport_driver = { |
293 | .name = "turbografx", | |
294 | .match_port = tgfx_attach, | |
295 | .detach = tgfx_detach, | |
296 | .devmodel = true, | |
297 | }; | |
298 | ||
1da177e4 LT |
299 | static int __init tgfx_init(void) |
300 | { | |
17dd3f0f DT |
301 | int i; |
302 | int have_dev = 0; | |
17dd3f0f DT |
303 | |
304 | for (i = 0; i < TGFX_MAX_PORTS; i++) { | |
78167236 | 305 | if (tgfx_cfg[i].nargs == 0 || tgfx_cfg[i].args[0] < 0) |
17dd3f0f DT |
306 | continue; |
307 | ||
78167236 | 308 | if (tgfx_cfg[i].nargs < 2) { |
17dd3f0f | 309 | printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n"); |
4de27a63 | 310 | return -EINVAL; |
17dd3f0f DT |
311 | } |
312 | ||
313 | have_dev = 1; | |
314 | } | |
1da177e4 | 315 | |
4de27a63 SM |
316 | if (!have_dev) |
317 | return -ENODEV; | |
1da177e4 | 318 | |
4de27a63 | 319 | return parport_register_driver(&tgfx_parport_driver); |
1da177e4 LT |
320 | } |
321 | ||
322 | static void __exit tgfx_exit(void) | |
323 | { | |
4de27a63 | 324 | parport_unregister_driver(&tgfx_parport_driver); |
1da177e4 LT |
325 | } |
326 | ||
327 | module_init(tgfx_init); | |
328 | module_exit(tgfx_exit); |