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Linux 2.6.21.1
[linux/fpc-iii.git] / drivers / input / joystick / gamecon.c
blob711e4b3e9e6130c4bf1fa71a234260576bd6cdca
1 /*
2 * NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux
3 *
4 * Copyright (c) 1999-2004 Vojtech Pavlik <vojtech@suse.cz>
5 * Copyright (c) 2004 Peter Nelson <rufus-kernel@hackish.org>
6 *
7 * Based on the work of:
8 * Andree Borrmann John Dahlstrom
9 * David Kuder Nathan Hand
10 * Raphael Assenat
11 */
12
13 /*
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 *
28 * Should you need to contact me, the author, you can do so either by
29 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
30 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
31 */
32
33 #include <linux/kernel.h>
34 #include <linux/delay.h>
35 #include <linux/module.h>
36 #include <linux/moduleparam.h>
37 #include <linux/init.h>
38 #include <linux/parport.h>
39 #include <linux/input.h>
40 #include <linux/mutex.h>
41
42 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
43 MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver");
44 MODULE_LICENSE("GPL");
45
46 #define GC_MAX_PORTS 3
47 #define GC_MAX_DEVICES 5
48
49 struct gc_config {
50 int args[GC_MAX_DEVICES + 1];
51 int nargs;
52 };
53
54 static struct gc_config gc[GC_MAX_PORTS] __initdata;
55
56 module_param_array_named(map, gc[0].args, int, &gc[0].nargs, 0);
57 MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
58 module_param_array_named(map2, gc[1].args, int, &gc[1].nargs, 0);
59 MODULE_PARM_DESC(map2, "Describes second set of devices");
60 module_param_array_named(map3, gc[2].args, int, &gc[2].nargs, 0);
61 MODULE_PARM_DESC(map3, "Describes third set of devices");
62
63 /* see also gs_psx_delay parameter in PSX support section */
64
65 #define GC_SNES 1
66 #define GC_NES 2
67 #define GC_NES4 3
68 #define GC_MULTI 4
69 #define GC_MULTI2 5
70 #define GC_N64 6
71 #define GC_PSX 7
72 #define GC_DDR 8
73 #define GC_SNESMOUSE 9
74
75 #define GC_MAX 9
76
77 #define GC_REFRESH_TIME HZ/100
78
79 struct gc {
80 struct pardevice *pd;
81 struct input_dev *dev[GC_MAX_DEVICES];
82 struct timer_list timer;
83 unsigned char pads[GC_MAX + 1];
84 int used;
85 struct mutex mutex;
86 char phys[GC_MAX_DEVICES][32];
87 };
88
89 static struct gc *gc_base[3];
90
91 static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 };
92
93 static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick",
94 "Multisystem 2-button joystick", "N64 controller", "PSX controller",
95 "PSX DDR controller", "SNES mouse" };
96 /*
97 * N64 support.
98 */
99
100 static unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 };
101 static short gc_n64_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TRIGGER, BTN_START };
102
103 #define GC_N64_LENGTH 32 /* N64 bit length, not including stop bit */
104 #define GC_N64_REQUEST_LENGTH 37 /* transmit request sequence is 9 bits long */
105 #define GC_N64_DELAY 133 /* delay between transmit request, and response ready (us) */
106 #define GC_N64_REQUEST 0x1dd1111111ULL /* the request data command (encoded for 000000011) */
107 #define GC_N64_DWS 3 /* delay between write segments (required for sound playback because of ISA DMA) */
108 /* GC_N64_DWS > 24 is known to fail */
109 #define GC_N64_POWER_W 0xe2 /* power during write (transmit request) */
110 #define GC_N64_POWER_R 0xfd /* power during read */
111 #define GC_N64_OUT 0x1d /* output bits to the 4 pads */
112 /* Reading the main axes of any N64 pad is known to fail if the corresponding bit */
113 /* in GC_N64_OUT is pulled low on the output port (by any routine) for more */
114 /* than 123 us */
115 #define GC_N64_CLOCK 0x02 /* clock bits for read */
116
117 /*
118 * gc_n64_read_packet() reads an N64 packet.
119 * Each pad uses one bit per byte. So all pads connected to this port are read in parallel.
120 */
121
122 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
123 {
124 int i;
125 unsigned long flags;
126
127 /*
128 * Request the pad to transmit data
129 */
130
131 local_irq_save(flags);
132 for (i = 0; i < GC_N64_REQUEST_LENGTH; i++) {
133 parport_write_data(gc->pd->port, GC_N64_POWER_W | ((GC_N64_REQUEST >> i) & 1 ? GC_N64_OUT : 0));
134 udelay(GC_N64_DWS);
135 }
136 local_irq_restore(flags);
137
138 /*
139 * Wait for the pad response to be loaded into the 33-bit register of the adapter
140 */
141
142 udelay(GC_N64_DELAY);
143
144 /*
145 * Grab data (ignoring the last bit, which is a stop bit)
146 */
147
148 for (i = 0; i < GC_N64_LENGTH; i++) {
149 parport_write_data(gc->pd->port, GC_N64_POWER_R);
150 data[i] = parport_read_status(gc->pd->port);
151 parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);
152 }
153
154 /*
155 * We must wait 200 ms here for the controller to reinitialize before the next read request.
156 * No worries as long as gc_read is polled less frequently than this.
157 */
158
159 }
160
161 static void gc_n64_process_packet(struct gc *gc)
162 {
163 unsigned char data[GC_N64_LENGTH];
164 signed char axes[2];
165 struct input_dev *dev;
166 int i, j, s;
167
168 gc_n64_read_packet(gc, data);
169
170 for (i = 0; i < GC_MAX_DEVICES; i++) {
171
172 dev = gc->dev[i];
173 if (!dev)
174 continue;
175
176 s = gc_status_bit[i];
177
178 if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
179
180 axes[0] = axes[1] = 0;
181
182 for (j = 0; j < 8; j++) {
183 if (data[23 - j] & s)
184 axes[0] |= 1 << j;
185 if (data[31 - j] & s)
186 axes[1] |= 1 << j;
187 }
188
189 input_report_abs(dev, ABS_X, axes[0]);
190 input_report_abs(dev, ABS_Y, -axes[1]);
191
192 input_report_abs(dev, ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
193 input_report_abs(dev, ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
194
195 for (j = 0; j < 10; j++)
196 input_report_key(dev, gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
197
198 input_sync(dev);
199 }
200 }
201 }
202
203 /*
204 * NES/SNES support.
205 */
206
207 #define GC_NES_DELAY 6 /* Delay between bits - 6us */
208 #define GC_NES_LENGTH 8 /* The NES pads use 8 bits of data */
209 #define GC_SNES_LENGTH 12 /* The SNES true length is 16, but the
210 last 4 bits are unused */
211 #define GC_SNESMOUSE_LENGTH 32 /* The SNES mouse uses 32 bits, the first
212 16 bits are equivalent to a gamepad */
213
214 #define GC_NES_POWER 0xfc
215 #define GC_NES_CLOCK 0x01
216 #define GC_NES_LATCH 0x02
217
218 static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
219 static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
220 static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR };
221
222 /*
223 * gc_nes_read_packet() reads a NES/SNES packet.
224 * Each pad uses one bit per byte. So all pads connected to
225 * this port are read in parallel.
226 */
227
228 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
229 {
230 int i;
231
232 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
233 udelay(GC_NES_DELAY * 2);
234 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
235
236 for (i = 0; i < length; i++) {
237 udelay(GC_NES_DELAY);
238 parport_write_data(gc->pd->port, GC_NES_POWER);
239 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
240 udelay(GC_NES_DELAY);
241 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
242 }
243 }
244
245 static void gc_nes_process_packet(struct gc *gc)
246 {
247 unsigned char data[GC_SNESMOUSE_LENGTH];
248 struct input_dev *dev;
249 int i, j, s, len;
250 char x_rel, y_rel;
251
252 len = gc->pads[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :
253 (gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);
254
255 gc_nes_read_packet(gc, len, data);
256
257 for (i = 0; i < GC_MAX_DEVICES; i++) {
258
259 dev = gc->dev[i];
260 if (!dev)
261 continue;
262
263 s = gc_status_bit[i];
264
265 if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
266 input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));
267 input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));
268 }
269
270 if (s & gc->pads[GC_NES])
271 for (j = 0; j < 4; j++)
272 input_report_key(dev, gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
273
274 if (s & gc->pads[GC_SNES])
275 for (j = 0; j < 8; j++)
276 input_report_key(dev, gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
277
278 if (s & gc->pads[GC_SNESMOUSE]) {
279 /*
280 * The 4 unused bits from SNES controllers appear to be ID bits
281 * so use them to make sure iwe are dealing with a mouse.
282 * gamepad is connected. This is important since
283 * my SNES gamepad sends 1's for bits 16-31, which
284 * cause the mouse pointer to quickly move to the
285 * upper left corner of the screen.
286 */
287 if (!(s & data[12]) && !(s & data[13]) &&
288 !(s & data[14]) && (s & data[15])) {
289 input_report_key(dev, BTN_LEFT, s & data[9]);
290 input_report_key(dev, BTN_RIGHT, s & data[8]);
291
292 x_rel = y_rel = 0;
293 for (j = 0; j < 7; j++) {
294 x_rel <<= 1;
295 if (data[25 + j] & s)
296 x_rel |= 1;
297
298 y_rel <<= 1;
299 if (data[17 + j] & s)
300 y_rel |= 1;
301 }
302
303 if (x_rel) {
304 if (data[24] & s)
305 x_rel = -x_rel;
306 input_report_rel(dev, REL_X, x_rel);
307 }
308
309 if (y_rel) {
310 if (data[16] & s)
311 y_rel = -y_rel;
312 input_report_rel(dev, REL_Y, y_rel);
313 }
314 }
315 }
316 input_sync(dev);
317 }
318 }
319
320 /*
321 * Multisystem joystick support
322 */
323
324 #define GC_MULTI_LENGTH 5 /* Multi system joystick packet length is 5 */
325 #define GC_MULTI2_LENGTH 6 /* One more bit for one more button */
326
327 /*
328 * gc_multi_read_packet() reads a Multisystem joystick packet.
329 */
330
331 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
332 {
333 int i;
334
335 for (i = 0; i < length; i++) {
336 parport_write_data(gc->pd->port, ~(1 << i));
337 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
338 }
339 }
340
341 static void gc_multi_process_packet(struct gc *gc)
342 {
343 unsigned char data[GC_MULTI2_LENGTH];
344 struct input_dev *dev;
345 int i, s;
346
347 gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
348
349 for (i = 0; i < GC_MAX_DEVICES; i++) {
350
351 dev = gc->dev[i];
352 if (!dev)
353 continue;
354
355 s = gc_status_bit[i];
356
357 if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
358 input_report_abs(dev, ABS_X, !(s & data[2]) - !(s & data[3]));
359 input_report_abs(dev, ABS_Y, !(s & data[0]) - !(s & data[1]));
360 input_report_key(dev, BTN_TRIGGER, s & data[4]);
361 }
362
363 if (s & gc->pads[GC_MULTI2])
364 input_report_key(dev, BTN_THUMB, s & data[5]);
365
366 input_sync(dev);
367 }
368 }
369
370 /*
371 * PSX support
372 *
373 * See documentation at:
374 * http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt
375 * http://www.gamesx.com/controldata/psxcont/psxcont.htm
376 * ftp://milano.usal.es/pablo/
377 *
378 */
379
380 #define GC_PSX_DELAY 25 /* 25 usec */
381 #define GC_PSX_LENGTH 8 /* talk to the controller in bits */
382 #define GC_PSX_BYTES 6 /* the maximum number of bytes to read off the controller */
383
384 #define GC_PSX_MOUSE 1 /* Mouse */
385 #define GC_PSX_NEGCON 2 /* NegCon */
386 #define GC_PSX_NORMAL 4 /* Digital / Analog or Rumble in Digital mode */
387 #define GC_PSX_ANALOG 5 /* Analog in Analog mode / Rumble in Green mode */
388 #define GC_PSX_RUMBLE 7 /* Rumble in Red mode */
389
390 #define GC_PSX_CLOCK 0x04 /* Pin 4 */
391 #define GC_PSX_COMMAND 0x01 /* Pin 2 */
392 #define GC_PSX_POWER 0xf8 /* Pins 5-9 */
393 #define GC_PSX_SELECT 0x02 /* Pin 3 */
394
395 #define GC_PSX_ID(x) ((x) >> 4) /* High nibble is device type */
396 #define GC_PSX_LEN(x) (((x) & 0xf) << 1) /* Low nibble is length in bytes/2 */
397
398 static int gc_psx_delay = GC_PSX_DELAY;
399 module_param_named(psx_delay, gc_psx_delay, uint, 0);
400 MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)");
401
402 static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y };
403 static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y,
404 BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR };
405 static short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 };
406
407 /*
408 * gc_psx_command() writes 8bit command and reads 8bit data from
409 * the psx pad.
410 */
411
412 static void gc_psx_command(struct gc *gc, int b, unsigned char data[GC_MAX_DEVICES])
413 {
414 int i, j, cmd, read;
415
416 for (i = 0; i < GC_MAX_DEVICES; i++)
417 data[i] = 0;
418
419 for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) {
420 cmd = (b & 1) ? GC_PSX_COMMAND : 0;
421 parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
422 udelay(gc_psx_delay);
423 read = parport_read_status(gc->pd->port) ^ 0x80;
424 for (j = 0; j < GC_MAX_DEVICES; j++)
425 data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (1 << i) : 0;
426 parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
427 udelay(gc_psx_delay);
428 }
429 }
430
431 /*
432 * gc_psx_read_packet() reads a whole psx packet and returns
433 * device identifier code.
434 */
435
436 static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES],
437 unsigned char id[GC_MAX_DEVICES])
438 {
439 int i, j, max_len = 0;
440 unsigned long flags;
441 unsigned char data2[GC_MAX_DEVICES];
442
443 parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER); /* Select pad */
444 udelay(gc_psx_delay);
445 parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER); /* Deselect, begin command */
446 udelay(gc_psx_delay);
447
448 local_irq_save(flags);
449
450 gc_psx_command(gc, 0x01, data2); /* Access pad */
451 gc_psx_command(gc, 0x42, id); /* Get device ids */
452 gc_psx_command(gc, 0, data2); /* Dump status */
453
454 for (i =0; i < GC_MAX_DEVICES; i++) /* Find the longest pad */
455 if((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR]))
456 && (GC_PSX_LEN(id[i]) > max_len)
457 && (GC_PSX_LEN(id[i]) <= GC_PSX_BYTES))
458 max_len = GC_PSX_LEN(id[i]);
459
460 for (i = 0; i < max_len; i++) { /* Read in all the data */
461 gc_psx_command(gc, 0, data2);
462 for (j = 0; j < GC_MAX_DEVICES; j++)
463 data[j][i] = data2[j];
464 }
465
466 local_irq_restore(flags);
467
468 parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
469
470 for(i = 0; i < GC_MAX_DEVICES; i++) /* Set id's to the real value */
471 id[i] = GC_PSX_ID(id[i]);
472 }
473
474 static void gc_psx_process_packet(struct gc *gc)
475 {
476 unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES];
477 unsigned char id[GC_MAX_DEVICES];
478 struct input_dev *dev;
479 int i, j;
480
481 gc_psx_read_packet(gc, data, id);
482
483 for (i = 0; i < GC_MAX_DEVICES; i++) {
484
485 dev = gc->dev[i];
486 if (!dev)
487 continue;
488
489 switch (id[i]) {
490
491 case GC_PSX_RUMBLE:
492
493 input_report_key(dev, BTN_THUMBL, ~data[i][0] & 0x04);
494 input_report_key(dev, BTN_THUMBR, ~data[i][0] & 0x02);
495
496 case GC_PSX_NEGCON:
497 case GC_PSX_ANALOG:
498
499 if (gc->pads[GC_DDR] & gc_status_bit[i]) {
500 for(j = 0; j < 4; j++)
501 input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j));
502 } else {
503 for (j = 0; j < 4; j++)
504 input_report_abs(dev, gc_psx_abs[j + 2], data[i][j + 2]);
505
506 input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128);
507 input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128);
508 }
509
510 for (j = 0; j < 8; j++)
511 input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j));
512
513 input_report_key(dev, BTN_START, ~data[i][0] & 0x08);
514 input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01);
515
516 input_sync(dev);
517
518 break;
519
520 case GC_PSX_NORMAL:
521 if (gc->pads[GC_DDR] & gc_status_bit[i]) {
522 for(j = 0; j < 4; j++)
523 input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j));
524 } else {
525 input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128);
526 input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128);
527
528 /* for some reason if the extra axes are left unset they drift */
529 /* for (j = 0; j < 4; j++)
530 input_report_abs(dev, gc_psx_abs[j + 2], 128);
531 * This needs to be debugged properly,
532 * maybe fuzz processing needs to be done in input_sync()
533 * --vojtech
534 */
535 }
536
537 for (j = 0; j < 8; j++)
538 input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j));
539
540 input_report_key(dev, BTN_START, ~data[i][0] & 0x08);
541 input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01);
542
543 input_sync(dev);
544
545 break;
546
547 case 0: /* not a pad, ignore */
548 break;
549 }
550 }
551 }
552
553 /*
554 * gc_timer() initiates reads of console pads data.
555 */
556
557 static void gc_timer(unsigned long private)
558 {
559 struct gc *gc = (void *) private;
560
561 /*
562 * N64 pads - must be read first, any read confuses them for 200 us
563 */
564
565 if (gc->pads[GC_N64])
566 gc_n64_process_packet(gc);
567
568 /*
569 * NES and SNES pads or mouse
570 */
571
572 if (gc->pads[GC_NES] || gc->pads[GC_SNES] || gc->pads[GC_SNESMOUSE])
573 gc_nes_process_packet(gc);
574
575 /*
576 * Multi and Multi2 joysticks
577 */
578
579 if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2])
580 gc_multi_process_packet(gc);
581
582 /*
583 * PSX controllers
584 */
585
586 if (gc->pads[GC_PSX] || gc->pads[GC_DDR])
587 gc_psx_process_packet(gc);
588
589 mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
590 }
591
592 static int gc_open(struct input_dev *dev)
593 {
594 struct gc *gc = dev->private;
595 int err;
596
597 err = mutex_lock_interruptible(&gc->mutex);
598 if (err)
599 return err;
600
601 if (!gc->used++) {
602 parport_claim(gc->pd);
603 parport_write_control(gc->pd->port, 0x04);
604 mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
605 }
606
607 mutex_unlock(&gc->mutex);
608 return 0;
609 }
610
611 static void gc_close(struct input_dev *dev)
612 {
613 struct gc *gc = dev->private;
614
615 mutex_lock(&gc->mutex);
616 if (!--gc->used) {
617 del_timer_sync(&gc->timer);
618 parport_write_control(gc->pd->port, 0x00);
619 parport_release(gc->pd);
620 }
621 mutex_unlock(&gc->mutex);
622 }
623
624 static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type)
625 {
626 struct input_dev *input_dev;
627 int i;
628
629 if (!pad_type)
630 return 0;
631
632 if (pad_type < 1 || pad_type > GC_MAX) {
633 printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", pad_type);
634 return -EINVAL;
635 }
636
637 gc->dev[idx] = input_dev = input_allocate_device();
638 if (!input_dev) {
639 printk(KERN_ERR "gamecon.c: Not enough memory for input device\n");
640 return -ENOMEM;
641 }
642
643 input_dev->name = gc_names[pad_type];
644 input_dev->phys = gc->phys[idx];
645 input_dev->id.bustype = BUS_PARPORT;
646 input_dev->id.vendor = 0x0001;
647 input_dev->id.product = pad_type;
648 input_dev->id.version = 0x0100;
649 input_dev->private = gc;
650
651 input_dev->open = gc_open;
652 input_dev->close = gc_close;
653
654 if (pad_type != GC_SNESMOUSE) {
655 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
656
657 for (i = 0; i < 2; i++)
658 input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0);
659 } else
660 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
661
662 gc->pads[0] |= gc_status_bit[idx];
663 gc->pads[pad_type] |= gc_status_bit[idx];
664
665 switch (pad_type) {
666
667 case GC_N64:
668 for (i = 0; i < 10; i++)
669 set_bit(gc_n64_btn[i], input_dev->keybit);
670
671 for (i = 0; i < 2; i++) {
672 input_set_abs_params(input_dev, ABS_X + i, -127, 126, 0, 2);
673 input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0);
674 }
675
676 break;
677
678 case GC_SNESMOUSE:
679 set_bit(BTN_LEFT, input_dev->keybit);
680 set_bit(BTN_RIGHT, input_dev->keybit);
681 set_bit(REL_X, input_dev->relbit);
682 set_bit(REL_Y, input_dev->relbit);
683 break;
684
685 case GC_SNES:
686 for (i = 4; i < 8; i++)
687 set_bit(gc_snes_btn[i], input_dev->keybit);
688 case GC_NES:
689 for (i = 0; i < 4; i++)
690 set_bit(gc_snes_btn[i], input_dev->keybit);
691 break;
692
693 case GC_MULTI2:
694 set_bit(BTN_THUMB, input_dev->keybit);
695 case GC_MULTI:
696 set_bit(BTN_TRIGGER, input_dev->keybit);
697 break;
698
699 case GC_PSX:
700 for (i = 0; i < 6; i++)
701 input_set_abs_params(input_dev, gc_psx_abs[i], 4, 252, 0, 2);
702 for (i = 0; i < 12; i++)
703 set_bit(gc_psx_btn[i], input_dev->keybit);
704
705 break;
706
707 case GC_DDR:
708 for (i = 0; i < 4; i++)
709 set_bit(gc_psx_ddr_btn[i], input_dev->keybit);
710 for (i = 0; i < 12; i++)
711 set_bit(gc_psx_btn[i], input_dev->keybit);
712
713 break;
714 }
715
716 return 0;
717 }
718
719 static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
720 {
721 struct gc *gc;
722 struct parport *pp;
723 struct pardevice *pd;
724 int i;
725 int err;
726
727 pp = parport_find_number(parport);
728 if (!pp) {
729 printk(KERN_ERR "gamecon.c: no such parport\n");
730 err = -EINVAL;
731 goto err_out;
732 }
733
734 pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
735 if (!pd) {
736 printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?\n");
737 err = -EBUSY;
738 goto err_put_pp;
739 }
740
741 gc = kzalloc(sizeof(struct gc), GFP_KERNEL);
742 if (!gc) {
743 printk(KERN_ERR "gamecon.c: Not enough memory\n");
744 err = -ENOMEM;
745 goto err_unreg_pardev;
746 }
747
748 mutex_init(&gc->mutex);
749 gc->pd = pd;
750 init_timer(&gc->timer);
751 gc->timer.data = (long) gc;
752 gc->timer.function = gc_timer;
753
754 for (i = 0; i < n_pads && i < GC_MAX_DEVICES; i++) {
755 if (!pads[i])
756 continue;
757
758 snprintf(gc->phys[i], sizeof(gc->phys[i]),
759 "%s/input%d", gc->pd->port->name, i);
760 err = gc_setup_pad(gc, i, pads[i]);
761 if (err)
762 goto err_unreg_devs;
763
764 err = input_register_device(gc->dev[i]);
765 if (err)
766 goto err_free_dev;
767 }
768
769 if (!gc->pads[0]) {
770 printk(KERN_ERR "gamecon.c: No valid devices specified\n");
771 err = -EINVAL;
772 goto err_free_gc;
773 }
774
775 parport_put_port(pp);
776 return gc;
777
778 err_free_dev:
779 input_free_device(gc->dev[i]);
780 err_unreg_devs:
781 while (--i >= 0)
782 if (gc->dev[i])
783 input_unregister_device(gc->dev[i]);
784 err_free_gc:
785 kfree(gc);
786 err_unreg_pardev:
787 parport_unregister_device(pd);
788 err_put_pp:
789 parport_put_port(pp);
790 err_out:
791 return ERR_PTR(err);
792 }
793
794 static void gc_remove(struct gc *gc)
795 {
796 int i;
797
798 for (i = 0; i < GC_MAX_DEVICES; i++)
799 if (gc->dev[i])
800 input_unregister_device(gc->dev[i]);
801 parport_unregister_device(gc->pd);
802 kfree(gc);
803 }
804
805 static int __init gc_init(void)
806 {
807 int i;
808 int have_dev = 0;
809 int err = 0;
810
811 for (i = 0; i < GC_MAX_PORTS; i++) {
812 if (gc[i].nargs == 0 || gc[i].args[0] < 0)
813 continue;
814
815 if (gc[i].nargs < 2) {
816 printk(KERN_ERR "gamecon.c: at least one device must be specified\n");
817 err = -EINVAL;
818 break;
819 }
820
821 gc_base[i] = gc_probe(gc[i].args[0], gc[i].args + 1, gc[i].nargs - 1);
822 if (IS_ERR(gc_base[i])) {
823 err = PTR_ERR(gc_base[i]);
824 break;
825 }
826
827 have_dev = 1;
828 }
829
830 if (err) {
831 while (--i >= 0)
832 if (gc_base[i])
833 gc_remove(gc_base[i]);
834 return err;
835 }
836
837 return have_dev ? 0 : -ENODEV;
838 }
839
840 static void __exit gc_exit(void)
841 {
842 int i;
843
844 for (i = 0; i < GC_MAX_PORTS; i++)
845 if (gc_base[i])
846 gc_remove(gc_base[i]);
847 }
848
849 module_init(gc_init);
850 module_exit(gc_exit);
Linux with added FPC-III support