Merge branch 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
[linux-2.6] / drivers / input / joystick / gamecon.c
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  */
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/delay.h>
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/init.h>
37 #include <linux/parport.h>
38 #include <linux/input.h>
39
40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41 MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver");
42 MODULE_LICENSE("GPL");
43
44 #define GC_MAX_PORTS            3
45 #define GC_MAX_DEVICES          5
46
47 struct gc_config {
48         int args[GC_MAX_DEVICES + 1];
49         int nargs;
50 };
51
52 static struct gc_config gc[GC_MAX_PORTS] __initdata;
53
54 module_param_array_named(map, gc[0].args, int, &gc[0].nargs, 0);
55 MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
56 module_param_array_named(map2, gc[1].args, int, &gc[1].nargs, 0);
57 MODULE_PARM_DESC(map2, "Describes second set of devices");
58 module_param_array_named(map3, gc[2].args, int, &gc[2].nargs, 0);
59 MODULE_PARM_DESC(map3, "Describes third set of devices");
60
61 __obsolete_setup("gc=");
62 __obsolete_setup("gc_2=");
63 __obsolete_setup("gc_3=");
64
65 /* see also gs_psx_delay parameter in PSX support section */
66
67 #define GC_SNES         1
68 #define GC_NES          2
69 #define GC_NES4         3
70 #define GC_MULTI        4
71 #define GC_MULTI2       5
72 #define GC_N64          6
73 #define GC_PSX          7
74 #define GC_DDR          8
75
76 #define GC_MAX          8
77
78 #define GC_REFRESH_TIME HZ/100
79
80 struct gc {
81         struct pardevice *pd;
82         struct input_dev *dev[GC_MAX_DEVICES];
83         struct timer_list timer;
84         unsigned char pads[GC_MAX + 1];
85         int used;
86         struct semaphore sem;
87         char phys[GC_MAX_DEVICES][32];
88 };
89
90 static struct gc *gc_base[3];
91
92 static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 };
93
94 static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick",
95                                 "Multisystem 2-button joystick", "N64 controller", "PSX controller",
96                                 "PSX DDR controller" };
97 /*
98  * N64 support.
99  */
100
101 static unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 };
102 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 };
103
104 #define GC_N64_LENGTH           32              /* N64 bit length, not including stop bit */
105 #define GC_N64_REQUEST_LENGTH   37              /* transmit request sequence is 9 bits long */
106 #define GC_N64_DELAY            133             /* delay between transmit request, and response ready (us) */
107 #define GC_N64_REQUEST          0x1dd1111111ULL /* the request data command (encoded for 000000011) */
108 #define GC_N64_DWS              3               /* delay between write segments (required for sound playback because of ISA DMA) */
109                                                 /* GC_N64_DWS > 24 is known to fail */
110 #define GC_N64_POWER_W          0xe2            /* power during write (transmit request) */
111 #define GC_N64_POWER_R          0xfd            /* power during read */
112 #define GC_N64_OUT              0x1d            /* output bits to the 4 pads */
113                                                 /* Reading the main axes of any N64 pad is known to fail if the corresponding bit */
114                                                 /* in GC_N64_OUT is pulled low on the output port (by any routine) for more */
115                                                 /* than 123 us */
116 #define GC_N64_CLOCK            0x02            /* clock bits for read */
117
118 /*
119  * gc_n64_read_packet() reads an N64 packet.
120  * Each pad uses one bit per byte. So all pads connected to this port are read in parallel.
121  */
122
123 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
124 {
125         int i;
126         unsigned long flags;
127
128 /*
129  * Request the pad to transmit data
130  */
131
132         local_irq_save(flags);
133         for (i = 0; i < GC_N64_REQUEST_LENGTH; i++) {
134                 parport_write_data(gc->pd->port, GC_N64_POWER_W | ((GC_N64_REQUEST >> i) & 1 ? GC_N64_OUT : 0));
135                 udelay(GC_N64_DWS);
136         }
137         local_irq_restore(flags);
138
139 /*
140  * Wait for the pad response to be loaded into the 33-bit register of the adapter
141  */
142
143         udelay(GC_N64_DELAY);
144
145 /*
146  * Grab data (ignoring the last bit, which is a stop bit)
147  */
148
149         for (i = 0; i < GC_N64_LENGTH; i++) {
150                 parport_write_data(gc->pd->port, GC_N64_POWER_R);
151                 data[i] = parport_read_status(gc->pd->port);
152                 parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);
153          }
154
155 /*
156  * We must wait 200 ms here for the controller to reinitialize before the next read request.
157  * No worries as long as gc_read is polled less frequently than this.
158  */
159
160 }
161
162 static void gc_n64_process_packet(struct gc *gc)
163 {
164         unsigned char data[GC_N64_LENGTH];
165         signed char axes[2];
166         struct input_dev *dev;
167         int i, j, s;
168
169         gc_n64_read_packet(gc, data);
170
171         for (i = 0; i < GC_MAX_DEVICES; i++) {
172
173                 dev = gc->dev[i];
174                 if (!dev)
175                         continue;
176
177                 s = gc_status_bit[i];
178
179                 if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
180
181                         axes[0] = axes[1] = 0;
182
183                         for (j = 0; j < 8; j++) {
184                                 if (data[23 - j] & s)
185                                         axes[0] |= 1 << j;
186                                 if (data[31 - j] & s)
187                                         axes[1] |= 1 << j;
188                         }
189
190                         input_report_abs(dev, ABS_X,  axes[0]);
191                         input_report_abs(dev, ABS_Y, -axes[1]);
192
193                         input_report_abs(dev, ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
194                         input_report_abs(dev, ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
195
196                         for (j = 0; j < 10; j++)
197                                 input_report_key(dev, gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
198
199                         input_sync(dev);
200                 }
201         }
202 }
203
204 /*
205  * NES/SNES support.
206  */
207
208 #define GC_NES_DELAY    6       /* Delay between bits - 6us */
209 #define GC_NES_LENGTH   8       /* The NES pads use 8 bits of data */
210 #define GC_SNES_LENGTH  12      /* The SNES true length is 16, but the last 4 bits are unused */
211
212 #define GC_NES_POWER    0xfc
213 #define GC_NES_CLOCK    0x01
214 #define GC_NES_LATCH    0x02
215
216 static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
217 static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
218 static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR };
219
220 /*
221  * gc_nes_read_packet() reads a NES/SNES packet.
222  * Each pad uses one bit per byte. So all pads connected to
223  * this port are read in parallel.
224  */
225
226 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
227 {
228         int i;
229
230         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
231         udelay(GC_NES_DELAY * 2);
232         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
233
234         for (i = 0; i < length; i++) {
235                 udelay(GC_NES_DELAY);
236                 parport_write_data(gc->pd->port, GC_NES_POWER);
237                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
238                 udelay(GC_NES_DELAY);
239                 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
240         }
241 }
242
243 static void gc_nes_process_packet(struct gc *gc)
244 {
245         unsigned char data[GC_SNES_LENGTH];
246         struct input_dev *dev;
247         int i, j, s;
248
249         gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
250
251         for (i = 0; i < GC_MAX_DEVICES; i++) {
252
253                 dev = gc->dev[i];
254                 if (!dev)
255                         continue;
256
257                 s = gc_status_bit[i];
258
259                 if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
260                         input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));
261                         input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));
262                 }
263
264                 if (s & gc->pads[GC_NES])
265                         for (j = 0; j < 4; j++)
266                                 input_report_key(dev, gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
267
268                 if (s & gc->pads[GC_SNES])
269                         for (j = 0; j < 8; j++)
270                                 input_report_key(dev, gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
271
272                 input_sync(dev);
273         }
274 }
275
276 /*
277  * Multisystem joystick support
278  */
279
280 #define GC_MULTI_LENGTH         5       /* Multi system joystick packet length is 5 */
281 #define GC_MULTI2_LENGTH        6       /* One more bit for one more button */
282
283 /*
284  * gc_multi_read_packet() reads a Multisystem joystick packet.
285  */
286
287 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
288 {
289         int i;
290
291         for (i = 0; i < length; i++) {
292                 parport_write_data(gc->pd->port, ~(1 << i));
293                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
294         }
295 }
296
297 static void gc_multi_process_packet(struct gc *gc)
298 {
299         unsigned char data[GC_MULTI2_LENGTH];
300         struct input_dev *dev;
301         int i, s;
302
303         gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
304
305         for (i = 0; i < GC_MAX_DEVICES; i++) {
306
307                 dev = gc->dev[i];
308                 if (!dev)
309                         continue;
310
311                 s = gc_status_bit[i];
312
313                 if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
314                         input_report_abs(dev, ABS_X,  !(s & data[2]) - !(s & data[3]));
315                         input_report_abs(dev, ABS_Y,  !(s & data[0]) - !(s & data[1]));
316                         input_report_key(dev, BTN_TRIGGER, s & data[4]);
317                 }
318
319                 if (s & gc->pads[GC_MULTI2])
320                         input_report_key(dev, BTN_THUMB, s & data[5]);
321
322                 input_sync(dev);
323         }
324 }
325
326 /*
327  * PSX support
328  *
329  * See documentation at:
330  *      http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt
331  *      http://www.gamesx.com/controldata/psxcont/psxcont.htm
332  *      ftp://milano.usal.es/pablo/
333  *
334  */
335
336 #define GC_PSX_DELAY    25              /* 25 usec */
337 #define GC_PSX_LENGTH   8               /* talk to the controller in bits */
338 #define GC_PSX_BYTES    6               /* the maximum number of bytes to read off the controller */
339
340 #define GC_PSX_MOUSE    1               /* Mouse */
341 #define GC_PSX_NEGCON   2               /* NegCon */
342 #define GC_PSX_NORMAL   4               /* Digital / Analog or Rumble in Digital mode  */
343 #define GC_PSX_ANALOG   5               /* Analog in Analog mode / Rumble in Green mode */
344 #define GC_PSX_RUMBLE   7               /* Rumble in Red mode */
345
346 #define GC_PSX_CLOCK    0x04            /* Pin 4 */
347 #define GC_PSX_COMMAND  0x01            /* Pin 2 */
348 #define GC_PSX_POWER    0xf8            /* Pins 5-9 */
349 #define GC_PSX_SELECT   0x02            /* Pin 3 */
350
351 #define GC_PSX_ID(x)    ((x) >> 4)      /* High nibble is device type */
352 #define GC_PSX_LEN(x)   (((x) & 0xf) << 1)      /* Low nibble is length in bytes/2 */
353
354 static int gc_psx_delay = GC_PSX_DELAY;
355 module_param_named(psx_delay, gc_psx_delay, uint, 0);
356 MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)");
357
358 __obsolete_setup("gc_psx_delay=");
359
360 static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y };
361 static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y,
362                                 BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR };
363 static short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 };
364
365 /*
366  * gc_psx_command() writes 8bit command and reads 8bit data from
367  * the psx pad.
368  */
369
370 static void gc_psx_command(struct gc *gc, int b, unsigned char data[GC_MAX_DEVICES])
371 {
372         int i, j, cmd, read;
373
374         for (i = 0; i < GC_MAX_DEVICES; i++)
375                 data[i] = 0;
376
377         for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) {
378                 cmd = (b & 1) ? GC_PSX_COMMAND : 0;
379                 parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
380                 udelay(gc_psx_delay);
381                 read = parport_read_status(gc->pd->port) ^ 0x80;
382                 for (j = 0; j < GC_MAX_DEVICES; j++)
383                         data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (1 << i) : 0;
384                 parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
385                 udelay(gc_psx_delay);
386         }
387 }
388
389 /*
390  * gc_psx_read_packet() reads a whole psx packet and returns
391  * device identifier code.
392  */
393
394 static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES],
395                                unsigned char id[GC_MAX_DEVICES])
396 {
397         int i, j, max_len = 0;
398         unsigned long flags;
399         unsigned char data2[GC_MAX_DEVICES];
400
401         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  /* Select pad */
402         udelay(gc_psx_delay);
403         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);                  /* Deselect, begin command */
404         udelay(gc_psx_delay);
405
406         local_irq_save(flags);
407
408         gc_psx_command(gc, 0x01, data2);                                                /* Access pad */
409         gc_psx_command(gc, 0x42, id);                                                   /* Get device ids */
410         gc_psx_command(gc, 0, data2);                                                   /* Dump status */
411
412         for (i =0; i < GC_MAX_DEVICES; i++)                                                             /* Find the longest pad */
413                 if((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR]))
414                         && (GC_PSX_LEN(id[i]) > max_len)
415                         && (GC_PSX_LEN(id[i]) <= GC_PSX_BYTES))
416                         max_len = GC_PSX_LEN(id[i]);
417
418         for (i = 0; i < max_len; i++) {                                         /* Read in all the data */
419                 gc_psx_command(gc, 0, data2);
420                 for (j = 0; j < GC_MAX_DEVICES; j++)
421                         data[j][i] = data2[j];
422         }
423
424         local_irq_restore(flags);
425
426         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
427
428         for(i = 0; i < GC_MAX_DEVICES; i++)                                                             /* Set id's to the real value */
429                 id[i] = GC_PSX_ID(id[i]);
430 }
431
432 static void gc_psx_process_packet(struct gc *gc)
433 {
434         unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES];
435         unsigned char id[GC_MAX_DEVICES];
436         struct input_dev *dev;
437         int i, j;
438
439         gc_psx_read_packet(gc, data, id);
440
441         for (i = 0; i < GC_MAX_DEVICES; i++) {
442
443                 dev = gc->dev[i];
444                 if (!dev)
445                         continue;
446
447                 switch (id[i]) {
448
449                         case GC_PSX_RUMBLE:
450
451                                 input_report_key(dev, BTN_THUMBL, ~data[i][0] & 0x04);
452                                 input_report_key(dev, BTN_THUMBR, ~data[i][0] & 0x02);
453
454                         case GC_PSX_NEGCON:
455                         case GC_PSX_ANALOG:
456
457                                 if (gc->pads[GC_DDR] & gc_status_bit[i]) {
458                                         for(j = 0; j < 4; j++)
459                                                 input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j));
460                                 } else {
461                                         for (j = 0; j < 4; j++)
462                                                 input_report_abs(dev, gc_psx_abs[j + 2], data[i][j + 2]);
463
464                                         input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128);
465                                         input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128);
466                                 }
467
468                                 for (j = 0; j < 8; j++)
469                                         input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j));
470
471                                 input_report_key(dev, BTN_START,  ~data[i][0] & 0x08);
472                                 input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01);
473
474                                 input_sync(dev);
475
476                                 break;
477
478                         case GC_PSX_NORMAL:
479                                 if (gc->pads[GC_DDR] & gc_status_bit[i]) {
480                                         for(j = 0; j < 4; j++)
481                                                 input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j));
482                                 } else {
483                                         input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128);
484                                         input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128);
485
486                                         /* for some reason if the extra axes are left unset they drift */
487                                         /* for (j = 0; j < 4; j++)
488                                                 input_report_abs(dev, gc_psx_abs[j + 2], 128);
489                                          * This needs to be debugged properly,
490                                          * maybe fuzz processing needs to be done in input_sync()
491                                          *                               --vojtech
492                                          */
493                                 }
494
495                                 for (j = 0; j < 8; j++)
496                                         input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j));
497
498                                 input_report_key(dev, BTN_START,  ~data[i][0] & 0x08);
499                                 input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01);
500
501                                 input_sync(dev);
502
503                                 break;
504
505                         case 0: /* not a pad, ignore */
506                                 break;
507                 }
508         }
509 }
510
511 /*
512  * gc_timer() initiates reads of console pads data.
513  */
514
515 static void gc_timer(unsigned long private)
516 {
517         struct gc *gc = (void *) private;
518
519 /*
520  * N64 pads - must be read first, any read confuses them for 200 us
521  */
522
523         if (gc->pads[GC_N64])
524                 gc_n64_process_packet(gc);
525
526 /*
527  * NES and SNES pads
528  */
529
530         if (gc->pads[GC_NES] || gc->pads[GC_SNES])
531                 gc_nes_process_packet(gc);
532
533 /*
534  * Multi and Multi2 joysticks
535  */
536
537         if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2])
538                 gc_multi_process_packet(gc);
539
540 /*
541  * PSX controllers
542  */
543
544         if (gc->pads[GC_PSX] || gc->pads[GC_DDR])
545                 gc_psx_process_packet(gc);
546
547         mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
548 }
549
550 static int gc_open(struct input_dev *dev)
551 {
552         struct gc *gc = dev->private;
553         int err;
554
555         err = down_interruptible(&gc->sem);
556         if (err)
557                 return err;
558
559         if (!gc->used++) {
560                 parport_claim(gc->pd);
561                 parport_write_control(gc->pd->port, 0x04);
562                 mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
563         }
564
565         up(&gc->sem);
566         return 0;
567 }
568
569 static void gc_close(struct input_dev *dev)
570 {
571         struct gc *gc = dev->private;
572
573         down(&gc->sem);
574         if (!--gc->used) {
575                 del_timer_sync(&gc->timer);
576                 parport_write_control(gc->pd->port, 0x00);
577                 parport_release(gc->pd);
578         }
579         up(&gc->sem);
580 }
581
582 static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type)
583 {
584         struct input_dev *input_dev;
585         int i;
586
587         if (!pad_type)
588                 return 0;
589
590         if (pad_type < 1 || pad_type > GC_MAX) {
591                 printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", pad_type);
592                 return -EINVAL;
593         }
594
595         gc->dev[idx] = input_dev = input_allocate_device();
596         if (!input_dev) {
597                 printk(KERN_ERR "gamecon.c: Not enough memory for input device\n");
598                 return -ENOMEM;
599         }
600
601         input_dev->name = gc_names[pad_type];
602         input_dev->phys = gc->phys[idx];
603         input_dev->id.bustype = BUS_PARPORT;
604         input_dev->id.vendor = 0x0001;
605         input_dev->id.product = pad_type;
606         input_dev->id.version = 0x0100;
607         input_dev->private = gc;
608
609         input_dev->open = gc_open;
610         input_dev->close = gc_close;
611
612         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
613
614         for (i = 0; i < 2; i++)
615                 input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0);
616
617         gc->pads[0] |= gc_status_bit[idx];
618         gc->pads[pad_type] |= gc_status_bit[idx];
619
620         switch (pad_type) {
621
622                 case GC_N64:
623                         for (i = 0; i < 10; i++)
624                                 set_bit(gc_n64_btn[i], input_dev->keybit);
625
626                         for (i = 0; i < 2; i++) {
627                                 input_set_abs_params(input_dev, ABS_X + i, -127, 126, 0, 2);
628                                 input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0);
629                         }
630
631                         break;
632
633                 case GC_SNES:
634                         for (i = 4; i < 8; i++)
635                                 set_bit(gc_snes_btn[i], input_dev->keybit);
636                 case GC_NES:
637                         for (i = 0; i < 4; i++)
638                                 set_bit(gc_snes_btn[i], input_dev->keybit);
639                         break;
640
641                 case GC_MULTI2:
642                         set_bit(BTN_THUMB, input_dev->keybit);
643                 case GC_MULTI:
644                         set_bit(BTN_TRIGGER, input_dev->keybit);
645                         break;
646
647                 case GC_PSX:
648                         for (i = 0; i < 6; i++)
649                                 input_set_abs_params(input_dev, gc_psx_abs[i], 4, 252, 0, 2);
650                         for (i = 0; i < 12; i++)
651                                 set_bit(gc_psx_btn[i], input_dev->keybit);
652
653                         break;
654
655                 case GC_DDR:
656                         for (i = 0; i < 4; i++)
657                                 set_bit(gc_psx_ddr_btn[i], input_dev->keybit);
658                         for (i = 0; i < 12; i++)
659                                 set_bit(gc_psx_btn[i], input_dev->keybit);
660
661                         break;
662         }
663
664         return 0;
665 }
666
667 static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
668 {
669         struct gc *gc;
670         struct parport *pp;
671         struct pardevice *pd;
672         int i;
673         int err;
674
675         pp = parport_find_number(parport);
676         if (!pp) {
677                 printk(KERN_ERR "gamecon.c: no such parport\n");
678                 err = -EINVAL;
679                 goto err_out;
680         }
681
682         pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
683         if (!pd) {
684                 printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?\n");
685                 err = -EBUSY;
686                 goto err_put_pp;
687         }
688
689         gc = kzalloc(sizeof(struct gc), GFP_KERNEL);
690         if (!gc) {
691                 printk(KERN_ERR "gamecon.c: Not enough memory\n");
692                 err = -ENOMEM;
693                 goto err_unreg_pardev;
694         }
695
696         init_MUTEX(&gc->sem);
697         gc->pd = pd;
698         init_timer(&gc->timer);
699         gc->timer.data = (long) gc;
700         gc->timer.function = gc_timer;
701
702         for (i = 0; i < n_pads && i < GC_MAX_DEVICES; i++) {
703                 if (!pads[i])
704                         continue;
705
706                 sprintf(gc->phys[i], "%s/input%d", gc->pd->port->name, i);
707                 err = gc_setup_pad(gc, i, pads[i]);
708                 if (err)
709                         goto err_unreg_devs;
710
711                 err = input_register_device(gc->dev[i]);
712                 if (err)
713                         goto err_free_dev;
714         }
715
716         if (!gc->pads[0]) {
717                 printk(KERN_ERR "gamecon.c: No valid devices specified\n");
718                 err = -EINVAL;
719                 goto err_free_gc;
720         }
721
722         parport_put_port(pp);
723         return gc;
724
725  err_free_dev:
726         input_free_device(gc->dev[i]);
727  err_unreg_devs:
728         while (--i >= 0)
729                 if (gc->dev[i])
730                         input_unregister_device(gc->dev[i]);
731  err_free_gc:
732         kfree(gc);
733  err_unreg_pardev:
734         parport_unregister_device(pd);
735  err_put_pp:
736         parport_put_port(pp);
737  err_out:
738         return ERR_PTR(err);
739 }
740
741 static void gc_remove(struct gc *gc)
742 {
743         int i;
744
745         for (i = 0; i < GC_MAX_DEVICES; i++)
746                 if (gc->dev[i])
747                         input_unregister_device(gc->dev[i]);
748         parport_unregister_device(gc->pd);
749         kfree(gc);
750 }
751
752 static int __init gc_init(void)
753 {
754         int i;
755         int have_dev = 0;
756         int err = 0;
757
758         for (i = 0; i < GC_MAX_PORTS; i++) {
759                 if (gc[i].nargs == 0 || gc[i].args[0] < 0)
760                         continue;
761
762                 if (gc[i].nargs < 2) {
763                         printk(KERN_ERR "gamecon.c: at least one device must be specified\n");
764                         err = -EINVAL;
765                         break;
766                 }
767
768                 gc_base[i] = gc_probe(gc[i].args[0], gc[i].args + 1, gc[i].nargs - 1);
769                 if (IS_ERR(gc_base[i])) {
770                         err = PTR_ERR(gc_base[i]);
771                         break;
772                 }
773
774                 have_dev = 1;
775         }
776
777         if (err) {
778                 while (--i >= 0)
779                         if (gc_base[i])
780                                 gc_remove(gc_base[i]);
781                 return err;
782         }
783
784         return have_dev ? 0 : -ENODEV;
785 }
786
787 static void __exit gc_exit(void)
788 {
789         int i;
790
791         for (i = 0; i < GC_MAX_PORTS; i++)
792                 if (gc_base[i])
793                         gc_remove(gc_base[i]);
794 }
795
796 module_init(gc_init);
797 module_exit(gc_exit);