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Diffstat (limited to 'drivers/input/joystick/grip.c')
-rw-r--r--drivers/input/joystick/grip.c422
1 files changed, 422 insertions, 0 deletions
diff --git a/drivers/input/joystick/grip.c b/drivers/input/joystick/grip.c
new file mode 100644
index 000000000000..d1500d2562d6
--- /dev/null
+++ b/drivers/input/joystick/grip.c
@@ -0,0 +1,422 @@
1/*
2 * $Id: grip.c,v 1.21 2002/01/22 20:27:57 vojtech Exp $
3 *
4 * Copyright (c) 1998-2001 Vojtech Pavlik
5 */
6
7/*
8 * Gravis/Kensington GrIP protocol joystick and gamepad driver for Linux
9 */
10
11/*
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 * Should you need to contact me, the author, you can do so either by
27 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
29 */
30
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/init.h>
34#include <linux/slab.h>
35#include <linux/gameport.h>
36#include <linux/input.h>
37
38#define DRIVER_DESC "Gravis GrIP protocol joystick driver"
39
40MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41MODULE_DESCRIPTION(DRIVER_DESC);
42MODULE_LICENSE("GPL");
43
44#define GRIP_MODE_GPP 1
45#define GRIP_MODE_BD 2
46#define GRIP_MODE_XT 3
47#define GRIP_MODE_DC 4
48
49#define GRIP_LENGTH_GPP 24
50#define GRIP_STROBE_GPP 200 /* 200 us */
51#define GRIP_LENGTH_XT 4
52#define GRIP_STROBE_XT 64 /* 64 us */
53#define GRIP_MAX_CHUNKS_XT 10
54#define GRIP_MAX_BITS_XT 30
55
56struct grip {
57 struct gameport *gameport;
58 struct input_dev dev[2];
59 unsigned char mode[2];
60 int reads;
61 int bads;
62 char phys[2][32];
63};
64
65static int grip_btn_gpp[] = { BTN_START, BTN_SELECT, BTN_TR2, BTN_Y, 0, BTN_TL2, BTN_A, BTN_B, BTN_X, 0, BTN_TL, BTN_TR, -1 };
66static int grip_btn_bd[] = { BTN_THUMB, BTN_THUMB2, BTN_TRIGGER, BTN_TOP, BTN_BASE, -1 };
67static int grip_btn_xt[] = { BTN_TRIGGER, BTN_THUMB, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_SELECT, BTN_START, BTN_MODE, -1 };
68static int grip_btn_dc[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_BASE5, -1 };
69
70static int grip_abs_gpp[] = { ABS_X, ABS_Y, -1 };
71static int grip_abs_bd[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, -1 };
72static int grip_abs_xt[] = { ABS_X, ABS_Y, ABS_BRAKE, ABS_GAS, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, -1 };
73static int grip_abs_dc[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, -1 };
74
75static char *grip_name[] = { NULL, "Gravis GamePad Pro", "Gravis Blackhawk Digital",
76 "Gravis Xterminator Digital", "Gravis Xterminator DualControl" };
77static int *grip_abs[] = { NULL, grip_abs_gpp, grip_abs_bd, grip_abs_xt, grip_abs_dc };
78static int *grip_btn[] = { NULL, grip_btn_gpp, grip_btn_bd, grip_btn_xt, grip_btn_dc };
79static char grip_anx[] = { 0, 0, 3, 5, 5 };
80static char grip_cen[] = { 0, 0, 2, 2, 4 };
81
82/*
83 * grip_gpp_read_packet() reads a Gravis GamePad Pro packet.
84 */
85
86static int grip_gpp_read_packet(struct gameport *gameport, int shift, unsigned int *data)
87{
88 unsigned long flags;
89 unsigned char u, v;
90 unsigned int t;
91 int i;
92
93 int strobe = gameport_time(gameport, GRIP_STROBE_GPP);
94
95 data[0] = 0;
96 t = strobe;
97 i = 0;
98
99 local_irq_save(flags);
100
101 v = gameport_read(gameport) >> shift;
102
103 do {
104 t--;
105 u = v; v = (gameport_read(gameport) >> shift) & 3;
106 if (~v & u & 1) {
107 data[0] |= (v >> 1) << i++;
108 t = strobe;
109 }
110 } while (i < GRIP_LENGTH_GPP && t > 0);
111
112 local_irq_restore(flags);
113
114 if (i < GRIP_LENGTH_GPP) return -1;
115
116 for (i = 0; i < GRIP_LENGTH_GPP && (data[0] & 0xfe4210) ^ 0x7c0000; i++)
117 data[0] = data[0] >> 1 | (data[0] & 1) << (GRIP_LENGTH_GPP - 1);
118
119 return -(i == GRIP_LENGTH_GPP);
120}
121
122/*
123 * grip_xt_read_packet() reads a Gravis Xterminator packet.
124 */
125
126static int grip_xt_read_packet(struct gameport *gameport, int shift, unsigned int *data)
127{
128 unsigned int i, j, buf, crc;
129 unsigned char u, v, w;
130 unsigned long flags;
131 unsigned int t;
132 char status;
133
134 int strobe = gameport_time(gameport, GRIP_STROBE_XT);
135
136 data[0] = data[1] = data[2] = data[3] = 0;
137 status = buf = i = j = 0;
138 t = strobe;
139
140 local_irq_save(flags);
141
142 v = w = (gameport_read(gameport) >> shift) & 3;
143
144 do {
145 t--;
146 u = (gameport_read(gameport) >> shift) & 3;
147
148 if (u ^ v) {
149
150 if ((u ^ v) & 1) {
151 buf = (buf << 1) | (u >> 1);
152 t = strobe;
153 i++;
154 } else
155
156 if ((((u ^ v) & (v ^ w)) >> 1) & ~(u | v | w) & 1) {
157 if (i == 20) {
158 crc = buf ^ (buf >> 7) ^ (buf >> 14);
159 if (!((crc ^ (0x25cb9e70 >> ((crc >> 2) & 0x1c))) & 0xf)) {
160 data[buf >> 18] = buf >> 4;
161 status |= 1 << (buf >> 18);
162 }
163 j++;
164 }
165 t = strobe;
166 buf = 0;
167 i = 0;
168 }
169 w = v;
170 v = u;
171 }
172
173 } while (status != 0xf && i < GRIP_MAX_BITS_XT && j < GRIP_MAX_CHUNKS_XT && t > 0);
174
175 local_irq_restore(flags);
176
177 return -(status != 0xf);
178}
179
180/*
181 * grip_timer() repeatedly polls the joysticks and generates events.
182 */
183
184static void grip_poll(struct gameport *gameport)
185{
186 struct grip *grip = gameport_get_drvdata(gameport);
187 unsigned int data[GRIP_LENGTH_XT];
188 struct input_dev *dev;
189 int i, j;
190
191 for (i = 0; i < 2; i++) {
192
193 dev = grip->dev + i;
194 grip->reads++;
195
196 switch (grip->mode[i]) {
197
198 case GRIP_MODE_GPP:
199
200 if (grip_gpp_read_packet(grip->gameport, (i << 1) + 4, data)) {
201 grip->bads++;
202 break;
203 }
204
205 input_report_abs(dev, ABS_X, ((*data >> 15) & 1) - ((*data >> 16) & 1));
206 input_report_abs(dev, ABS_Y, ((*data >> 13) & 1) - ((*data >> 12) & 1));
207
208 for (j = 0; j < 12; j++)
209 if (grip_btn_gpp[j])
210 input_report_key(dev, grip_btn_gpp[j], (*data >> j) & 1);
211
212 break;
213
214 case GRIP_MODE_BD:
215
216 if (grip_xt_read_packet(grip->gameport, (i << 1) + 4, data)) {
217 grip->bads++;
218 break;
219 }
220
221 input_report_abs(dev, ABS_X, (data[0] >> 2) & 0x3f);
222 input_report_abs(dev, ABS_Y, 63 - ((data[0] >> 8) & 0x3f));
223 input_report_abs(dev, ABS_THROTTLE, (data[2] >> 8) & 0x3f);
224
225 input_report_abs(dev, ABS_HAT0X, ((data[2] >> 1) & 1) - ( data[2] & 1));
226 input_report_abs(dev, ABS_HAT0Y, ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1));
227
228 for (j = 0; j < 5; j++)
229 input_report_key(dev, grip_btn_bd[j], (data[3] >> (j + 4)) & 1);
230
231 break;
232
233 case GRIP_MODE_XT:
234
235 if (grip_xt_read_packet(grip->gameport, (i << 1) + 4, data)) {
236 grip->bads++;
237 break;
238 }
239
240 input_report_abs(dev, ABS_X, (data[0] >> 2) & 0x3f);
241 input_report_abs(dev, ABS_Y, 63 - ((data[0] >> 8) & 0x3f));
242 input_report_abs(dev, ABS_BRAKE, (data[1] >> 2) & 0x3f);
243 input_report_abs(dev, ABS_GAS, (data[1] >> 8) & 0x3f);
244 input_report_abs(dev, ABS_THROTTLE, (data[2] >> 8) & 0x3f);
245
246 input_report_abs(dev, ABS_HAT0X, ((data[2] >> 1) & 1) - ( data[2] & 1));
247 input_report_abs(dev, ABS_HAT0Y, ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1));
248 input_report_abs(dev, ABS_HAT1X, ((data[2] >> 5) & 1) - ((data[2] >> 4) & 1));
249 input_report_abs(dev, ABS_HAT1Y, ((data[2] >> 6) & 1) - ((data[2] >> 7) & 1));
250
251 for (j = 0; j < 11; j++)
252 input_report_key(dev, grip_btn_xt[j], (data[3] >> (j + 3)) & 1);
253 break;
254
255 case GRIP_MODE_DC:
256
257 if (grip_xt_read_packet(grip->gameport, (i << 1) + 4, data)) {
258 grip->bads++;
259 break;
260 }
261
262 input_report_abs(dev, ABS_X, (data[0] >> 2) & 0x3f);
263 input_report_abs(dev, ABS_Y, (data[0] >> 8) & 0x3f);
264 input_report_abs(dev, ABS_RX, (data[1] >> 2) & 0x3f);
265 input_report_abs(dev, ABS_RY, (data[1] >> 8) & 0x3f);
266 input_report_abs(dev, ABS_THROTTLE, (data[2] >> 8) & 0x3f);
267
268 input_report_abs(dev, ABS_HAT0X, ((data[2] >> 1) & 1) - ( data[2] & 1));
269 input_report_abs(dev, ABS_HAT0Y, ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1));
270
271 for (j = 0; j < 9; j++)
272 input_report_key(dev, grip_btn_dc[j], (data[3] >> (j + 3)) & 1);
273 break;
274
275
276 }
277
278 input_sync(dev);
279 }
280}
281
282static int grip_open(struct input_dev *dev)
283{
284 struct grip *grip = dev->private;
285
286 gameport_start_polling(grip->gameport);
287 return 0;
288}
289
290static void grip_close(struct input_dev *dev)
291{
292 struct grip *grip = dev->private;
293
294 gameport_stop_polling(grip->gameport);
295}
296
297static int grip_connect(struct gameport *gameport, struct gameport_driver *drv)
298{
299 struct grip *grip;
300 unsigned int data[GRIP_LENGTH_XT];
301 int i, j, t;
302 int err;
303
304 if (!(grip = kcalloc(1, sizeof(struct grip), GFP_KERNEL)))
305 return -ENOMEM;
306
307 grip->gameport = gameport;
308
309 gameport_set_drvdata(gameport, grip);
310
311 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
312 if (err)
313 goto fail1;
314
315 for (i = 0; i < 2; i++) {
316 if (!grip_gpp_read_packet(gameport, (i << 1) + 4, data)) {
317 grip->mode[i] = GRIP_MODE_GPP;
318 continue;
319 }
320 if (!grip_xt_read_packet(gameport, (i << 1) + 4, data)) {
321 if (!(data[3] & 7)) {
322 grip->mode[i] = GRIP_MODE_BD;
323 continue;
324 }
325 if (!(data[2] & 0xf0)) {
326 grip->mode[i] = GRIP_MODE_XT;
327 continue;
328 }
329 grip->mode[i] = GRIP_MODE_DC;
330 continue;
331 }
332 }
333
334 if (!grip->mode[0] && !grip->mode[1]) {
335 err = -ENODEV;
336 goto fail2;
337 }
338
339 gameport_set_poll_handler(gameport, grip_poll);
340 gameport_set_poll_interval(gameport, 20);
341
342 for (i = 0; i < 2; i++)
343 if (grip->mode[i]) {
344
345 sprintf(grip->phys[i], "%s/input%d", gameport->phys, i);
346
347 grip->dev[i].private = grip;
348
349 grip->dev[i].open = grip_open;
350 grip->dev[i].close = grip_close;
351
352 grip->dev[i].name = grip_name[grip->mode[i]];
353 grip->dev[i].phys = grip->phys[i];
354 grip->dev[i].id.bustype = BUS_GAMEPORT;
355 grip->dev[i].id.vendor = GAMEPORT_ID_VENDOR_GRAVIS;
356 grip->dev[i].id.product = grip->mode[i];
357 grip->dev[i].id.version = 0x0100;
358
359 grip->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
360
361 for (j = 0; (t = grip_abs[grip->mode[i]][j]) >= 0; j++) {
362
363 if (j < grip_cen[grip->mode[i]])
364 input_set_abs_params(&grip->dev[i], t, 14, 52, 1, 2);
365 else if (j < grip_anx[grip->mode[i]])
366 input_set_abs_params(&grip->dev[i], t, 3, 57, 1, 0);
367 else
368 input_set_abs_params(&grip->dev[i], t, -1, 1, 0, 0);
369 }
370
371 for (j = 0; (t = grip_btn[grip->mode[i]][j]) >= 0; j++)
372 if (t > 0)
373 set_bit(t, grip->dev[i].keybit);
374
375 printk(KERN_INFO "input: %s on %s\n",
376 grip_name[grip->mode[i]], gameport->phys);
377 input_register_device(grip->dev + i);
378 }
379
380 return 0;
381
382fail2: gameport_close(gameport);
383fail1: gameport_set_drvdata(gameport, NULL);
384 kfree(grip);
385 return err;
386}
387
388static void grip_disconnect(struct gameport *gameport)
389{
390 struct grip *grip = gameport_get_drvdata(gameport);
391 int i;
392
393 for (i = 0; i < 2; i++)
394 if (grip->mode[i])
395 input_unregister_device(grip->dev + i);
396 gameport_close(gameport);
397 gameport_set_drvdata(gameport, NULL);
398 kfree(grip);
399}
400
401static struct gameport_driver grip_drv = {
402 .driver = {
403 .name = "grip",
404 },
405 .description = DRIVER_DESC,
406 .connect = grip_connect,
407 .disconnect = grip_disconnect,
408};
409
410static int __init grip_init(void)
411{
412 gameport_register_driver(&grip_drv);
413 return 0;
414}
415
416static void __exit grip_exit(void)
417{
418 gameport_unregister_driver(&grip_drv);
419}
420
421module_init(grip_init);
422module_exit(grip_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-14 13:03:52 -0500