Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
[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 /*
163  * NES/SNES support.
164  */
165
166 #define GC_NES_DELAY    6       /* Delay between bits - 6us */
167 #define GC_NES_LENGTH   8       /* The NES pads use 8 bits of data */
168 #define GC_SNES_LENGTH  12      /* The SNES true length is 16, but the last 4 bits are unused */
169
170 #define GC_NES_POWER    0xfc
171 #define GC_NES_CLOCK    0x01
172 #define GC_NES_LATCH    0x02
173
174 static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
175 static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
176 static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR };
177
178 /*
179  * gc_nes_read_packet() reads a NES/SNES packet.
180  * Each pad uses one bit per byte. So all pads connected to
181  * this port are read in parallel.
182  */
183
184 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
185 {
186         int i;
187
188         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
189         udelay(GC_NES_DELAY * 2);
190         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
191
192         for (i = 0; i < length; i++) {
193                 udelay(GC_NES_DELAY);
194                 parport_write_data(gc->pd->port, GC_NES_POWER);
195                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
196                 udelay(GC_NES_DELAY);
197                 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
198         }
199 }
200
201 /*
202  * Multisystem joystick support
203  */
204
205 #define GC_MULTI_LENGTH         5       /* Multi system joystick packet length is 5 */
206 #define GC_MULTI2_LENGTH        6       /* One more bit for one more button */
207
208 /*
209  * gc_multi_read_packet() reads a Multisystem joystick packet.
210  */
211
212 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
213 {
214         int i;
215
216         for (i = 0; i < length; i++) {
217                 parport_write_data(gc->pd->port, ~(1 << i));
218                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
219         }
220 }
221
222 /*
223  * PSX support
224  *
225  * See documentation at:
226  *      http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt
227  *      http://www.gamesx.com/controldata/psxcont/psxcont.htm
228  *      ftp://milano.usal.es/pablo/
229  *
230  */
231
232 #define GC_PSX_DELAY    25              /* 25 usec */
233 #define GC_PSX_LENGTH   8               /* talk to the controller in bits */
234 #define GC_PSX_BYTES    6               /* the maximum number of bytes to read off the controller */
235
236 #define GC_PSX_MOUSE    1               /* Mouse */
237 #define GC_PSX_NEGCON   2               /* NegCon */
238 #define GC_PSX_NORMAL   4               /* Digital / Analog or Rumble in Digital mode  */
239 #define GC_PSX_ANALOG   5               /* Analog in Analog mode / Rumble in Green mode */
240 #define GC_PSX_RUMBLE   7               /* Rumble in Red mode */
241
242 #define GC_PSX_CLOCK    0x04            /* Pin 4 */
243 #define GC_PSX_COMMAND  0x01            /* Pin 2 */
244 #define GC_PSX_POWER    0xf8            /* Pins 5-9 */
245 #define GC_PSX_SELECT   0x02            /* Pin 3 */
246
247 #define GC_PSX_ID(x)    ((x) >> 4)      /* High nibble is device type */
248 #define GC_PSX_LEN(x)   (((x) & 0xf) << 1)      /* Low nibble is length in bytes/2 */
249
250 static int gc_psx_delay = GC_PSX_DELAY;
251 module_param_named(psx_delay, gc_psx_delay, uint, 0);
252 MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)");
253
254 __obsolete_setup("gc_psx_delay=");
255
256 static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y };
257 static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y,
258                                 BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR };
259 static short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 };
260
261 /*
262  * gc_psx_command() writes 8bit command and reads 8bit data from
263  * the psx pad.
264  */
265
266 static void gc_psx_command(struct gc *gc, int b, unsigned char data[5])
267 {
268         int i, j, cmd, read;
269         for (i = 0; i < 5; i++)
270                 data[i] = 0;
271
272         for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) {
273                 cmd = (b & 1) ? GC_PSX_COMMAND : 0;
274                 parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
275                 udelay(gc_psx_delay);
276                 read = parport_read_status(gc->pd->port) ^ 0x80;
277                 for (j = 0; j < 5; j++)
278                         data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (1 << i) : 0;
279                 parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
280                 udelay(gc_psx_delay);
281         }
282 }
283
284 /*
285  * gc_psx_read_packet() reads a whole psx packet and returns
286  * device identifier code.
287  */
288
289 static void gc_psx_read_packet(struct gc *gc, unsigned char data[5][GC_PSX_BYTES], unsigned char id[5])
290 {
291         int i, j, max_len = 0;
292         unsigned long flags;
293         unsigned char data2[5];
294
295         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  /* Select pad */
296         udelay(gc_psx_delay);
297         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);                  /* Deselect, begin command */
298         udelay(gc_psx_delay);
299
300         local_irq_save(flags);
301
302         gc_psx_command(gc, 0x01, data2);                                                /* Access pad */
303         gc_psx_command(gc, 0x42, id);                                                   /* Get device ids */
304         gc_psx_command(gc, 0, data2);                                                   /* Dump status */
305
306         for (i =0; i < 5; i++)                                                          /* Find the longest pad */
307                 if((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR]))
308                         && (GC_PSX_LEN(id[i]) > max_len)
309                         && (GC_PSX_LEN(id[i]) <= GC_PSX_BYTES))
310                         max_len = GC_PSX_LEN(id[i]);
311
312         for (i = 0; i < max_len; i++) {                                         /* Read in all the data */
313                 gc_psx_command(gc, 0, data2);
314                 for (j = 0; j < 5; j++)
315                         data[j][i] = data2[j];
316         }
317
318         local_irq_restore(flags);
319
320         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
321
322         for(i = 0; i < 5; i++)                                                          /* Set id's to the real value */
323                 id[i] = GC_PSX_ID(id[i]);
324 }
325
326 /*
327  * gc_timer() reads and analyzes console pads data.
328  */
329
330 #define GC_MAX_LENGTH GC_N64_LENGTH
331
332 static void gc_timer(unsigned long private)
333 {
334         struct gc *gc = (void *) private;
335         unsigned char data[GC_MAX_LENGTH];
336         unsigned char data_psx[5][GC_PSX_BYTES];
337         int i, j, s;
338
339 /*
340  * N64 pads - must be read first, any read confuses them for 200 us
341  */
342
343         if (gc->pads[GC_N64]) {
344
345                 gc_n64_read_packet(gc, data);
346
347                 for (i = 0; i < 5; i++) {
348
349                         s = gc_status_bit[i];
350
351                         if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
352
353                                 signed char axes[2];
354                                 axes[0] = axes[1] = 0;
355
356                                 for (j = 0; j < 8; j++) {
357                                         if (data[23 - j] & s) axes[0] |= 1 << j;
358                                         if (data[31 - j] & s) axes[1] |= 1 << j;
359                                 }
360
361                                 input_report_abs(gc->dev[i], ABS_X,  axes[0]);
362                                 input_report_abs(gc->dev[i], ABS_Y, -axes[1]);
363
364                                 input_report_abs(gc->dev[i], ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
365                                 input_report_abs(gc->dev[i], ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
366
367                                 for (j = 0; j < 10; j++)
368                                         input_report_key(gc->dev[i], gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
369
370                                 input_sync(gc->dev[i]);
371                         }
372                 }
373         }
374
375 /*
376  * NES and SNES pads
377  */
378
379         if (gc->pads[GC_NES] || gc->pads[GC_SNES]) {
380
381                 gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
382
383                 for (i = 0; i < 5; i++) {
384
385                         s = gc_status_bit[i];
386
387                         if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
388                                 input_report_abs(gc->dev[i], ABS_X, !(s & data[6]) - !(s & data[7]));
389                                 input_report_abs(gc->dev[i], ABS_Y, !(s & data[4]) - !(s & data[5]));
390                         }
391
392                         if (s & gc->pads[GC_NES])
393                                 for (j = 0; j < 4; j++)
394                                         input_report_key(gc->dev[i], gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
395
396                         if (s & gc->pads[GC_SNES])
397                                 for (j = 0; j < 8; j++)
398                                         input_report_key(gc->dev[i], gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
399
400                         input_sync(gc->dev[i]);
401                 }
402         }
403
404 /*
405  * Multi and Multi2 joysticks
406  */
407
408         if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2]) {
409
410                 gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
411
412                 for (i = 0; i < 5; i++) {
413
414                         s = gc_status_bit[i];
415
416                         if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
417                                 input_report_abs(gc->dev[i], ABS_X,  !(s & data[2]) - !(s & data[3]));
418                                 input_report_abs(gc->dev[i], ABS_Y,  !(s & data[0]) - !(s & data[1]));
419                                 input_report_key(gc->dev[i], BTN_TRIGGER, s & data[4]);
420                         }
421
422                         if (s & gc->pads[GC_MULTI2])
423                                 input_report_key(gc->dev[i], BTN_THUMB, s & data[5]);
424
425                         input_sync(gc->dev[i]);
426                 }
427         }
428
429 /*
430  * PSX controllers
431  */
432
433         if (gc->pads[GC_PSX] || gc->pads[GC_DDR]) {
434
435                 gc_psx_read_packet(gc, data_psx, data);
436
437                 for (i = 0; i < 5; i++) {
438                         switch (data[i]) {
439
440                                 case GC_PSX_RUMBLE:
441
442                                         input_report_key(gc->dev[i], BTN_THUMBL, ~data_psx[i][0] & 0x04);
443                                         input_report_key(gc->dev[i], BTN_THUMBR, ~data_psx[i][0] & 0x02);
444
445                                 case GC_PSX_NEGCON:
446                                 case GC_PSX_ANALOG:
447
448                                         if (gc->pads[GC_DDR] & gc_status_bit[i]) {
449                                                 for(j = 0; j < 4; j++)
450                                                         input_report_key(gc->dev[i], gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
451                                         } else {
452                                                 for (j = 0; j < 4; j++)
453                                                         input_report_abs(gc->dev[i], gc_psx_abs[j+2], data_psx[i][j + 2]);
454
455                                                 input_report_abs(gc->dev[i], ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
456                                                 input_report_abs(gc->dev[i], ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
457                                         }
458
459                                         for (j = 0; j < 8; j++)
460                                                 input_report_key(gc->dev[i], gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
461
462                                         input_report_key(gc->dev[i], BTN_START,  ~data_psx[i][0] & 0x08);
463                                         input_report_key(gc->dev[i], BTN_SELECT, ~data_psx[i][0] & 0x01);
464
465                                         input_sync(gc->dev[i]);
466
467                                         break;
468
469                                 case GC_PSX_NORMAL:
470                                         if (gc->pads[GC_DDR] & gc_status_bit[i]) {
471                                                 for(j = 0; j < 4; j++)
472                                                         input_report_key(gc->dev[i], gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
473                                         } else {
474                                                 input_report_abs(gc->dev[i], ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
475                                                 input_report_abs(gc->dev[i], ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
476
477                                                 /* for some reason if the extra axes are left unset they drift */
478                                                 /* for (j = 0; j < 4; j++)
479                                                         input_report_abs(gc->dev[i], gc_psx_abs[j+2], 128);
480                                                  * This needs to be debugged properly,
481                                                  * maybe fuzz processing needs to be done in input_sync()
482                                                  *                               --vojtech
483                                                  */
484                                         }
485
486                                         for (j = 0; j < 8; j++)
487                                                 input_report_key(gc->dev[i], gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
488
489                                         input_report_key(gc->dev[i], BTN_START,  ~data_psx[i][0] & 0x08);
490                                         input_report_key(gc->dev[i], BTN_SELECT, ~data_psx[i][0] & 0x01);
491
492                                         input_sync(gc->dev[i]);
493
494                                         break;
495
496                                 case 0: /* not a pad, ignore */
497                                         break;
498                         }
499                 }
500         }
501
502         mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
503 }
504
505 static int gc_open(struct input_dev *dev)
506 {
507         struct gc *gc = dev->private;
508         int err;
509
510         err = down_interruptible(&gc->sem);
511         if (err)
512                 return err;
513
514         if (!gc->used++) {
515                 parport_claim(gc->pd);
516                 parport_write_control(gc->pd->port, 0x04);
517                 mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
518         }
519
520         up(&gc->sem);
521         return 0;
522 }
523
524 static void gc_close(struct input_dev *dev)
525 {
526         struct gc *gc = dev->private;
527
528         down(&gc->sem);
529         if (!--gc->used) {
530                 del_timer_sync(&gc->timer);
531                 parport_write_control(gc->pd->port, 0x00);
532                 parport_release(gc->pd);
533         }
534         up(&gc->sem);
535 }
536
537 static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type)
538 {
539         struct input_dev *input_dev;
540         int i;
541
542         if (!pad_type)
543                 return 0;
544
545         if (pad_type < 1 || pad_type > GC_MAX) {
546                 printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", pad_type);
547                 return -EINVAL;
548         }
549
550         gc->dev[idx] = input_dev = input_allocate_device();
551         if (!input_dev) {
552                 printk(KERN_ERR "gamecon.c: Not enough memory for input device\n");
553                 return -ENOMEM;
554         }
555
556         input_dev->name = gc_names[pad_type];
557         input_dev->phys = gc->phys[idx];
558         input_dev->id.bustype = BUS_PARPORT;
559         input_dev->id.vendor = 0x0001;
560         input_dev->id.product = pad_type;
561         input_dev->id.version = 0x0100;
562         input_dev->private = gc;
563
564         input_dev->open = gc_open;
565         input_dev->close = gc_close;
566
567         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
568
569         for (i = 0; i < 2; i++)
570                 input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0);
571
572         gc->pads[0] |= gc_status_bit[idx];
573         gc->pads[pad_type] |= gc_status_bit[idx];
574
575         switch (pad_type) {
576
577                 case GC_N64:
578                         for (i = 0; i < 10; i++)
579                                 set_bit(gc_n64_btn[i], input_dev->keybit);
580
581                         for (i = 0; i < 2; i++) {
582                                 input_set_abs_params(input_dev, ABS_X + i, -127, 126, 0, 2);
583                                 input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0);
584                         }
585
586                         break;
587
588                 case GC_SNES:
589                         for (i = 4; i < 8; i++)
590                                 set_bit(gc_snes_btn[i], input_dev->keybit);
591                 case GC_NES:
592                         for (i = 0; i < 4; i++)
593                                 set_bit(gc_snes_btn[i], input_dev->keybit);
594                         break;
595
596                 case GC_MULTI2:
597                         set_bit(BTN_THUMB, input_dev->keybit);
598                 case GC_MULTI:
599                         set_bit(BTN_TRIGGER, input_dev->keybit);
600                         break;
601
602                 case GC_PSX:
603                         for (i = 0; i < 6; i++)
604                                 input_set_abs_params(input_dev, gc_psx_abs[i], 4, 252, 0, 2);
605                         for (i = 0; i < 12; i++)
606                                 set_bit(gc_psx_btn[i], input_dev->keybit);
607
608                         break;
609
610                 case GC_DDR:
611                         for (i = 0; i < 4; i++)
612                                 set_bit(gc_psx_ddr_btn[i], input_dev->keybit);
613                         for (i = 0; i < 12; i++)
614                                 set_bit(gc_psx_btn[i], input_dev->keybit);
615
616                         break;
617         }
618
619         return 0;
620 }
621
622 static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
623 {
624         struct gc *gc;
625         struct parport *pp;
626         struct pardevice *pd;
627         int i;
628         int err;
629
630         pp = parport_find_number(parport);
631         if (!pp) {
632                 printk(KERN_ERR "gamecon.c: no such parport\n");
633                 err = -EINVAL;
634                 goto err_out;
635         }
636
637         pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
638         if (!pd) {
639                 printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?\n");
640                 err = -EBUSY;
641                 goto err_put_pp;
642         }
643
644         gc = kzalloc(sizeof(struct gc), GFP_KERNEL);
645         if (!gc) {
646                 printk(KERN_ERR "gamecon.c: Not enough memory\n");
647                 err = -ENOMEM;
648                 goto err_unreg_pardev;
649         }
650
651         init_MUTEX(&gc->sem);
652         gc->pd = pd;
653         init_timer(&gc->timer);
654         gc->timer.data = (long) gc;
655         gc->timer.function = gc_timer;
656
657         for (i = 0; i < n_pads; i++) {
658                 if (!pads[i])
659                         continue;
660
661                 sprintf(gc->phys[i], "%s/input%d", gc->pd->port->name, i);
662                 err = gc_setup_pad(gc, i, pads[i]);
663                 if (err)
664                         goto err_free_devs;
665
666                 input_register_device(gc->dev[i]);
667         }
668
669         if (!gc->pads[0]) {
670                 printk(KERN_ERR "gamecon.c: No valid devices specified\n");
671                 err = -EINVAL;
672                 goto err_free_gc;
673         }
674
675         parport_put_port(pp);
676         return gc;
677
678  err_free_devs:
679         while (--i >= 0)
680                 input_unregister_device(gc->dev[i]);
681  err_free_gc:
682         kfree(gc);
683  err_unreg_pardev:
684         parport_unregister_device(pd);
685  err_put_pp:
686         parport_put_port(pp);
687  err_out:
688         return ERR_PTR(err);
689 }
690
691 static void __exit gc_remove(struct gc *gc)
692 {
693         int i;
694
695         for (i = 0; i < GC_MAX_DEVICES; i++)
696                 if (gc->dev[i])
697                         input_unregister_device(gc->dev[i]);
698         parport_unregister_device(gc->pd);
699         kfree(gc);
700 }
701
702 static int __init gc_init(void)
703 {
704         int i;
705         int have_dev = 0;
706         int err = 0;
707
708         for (i = 0; i < GC_MAX_PORTS; i++) {
709                 if (gc[i].nargs == 0 || gc[i].args[0] < 0)
710                         continue;
711
712                 if (gc[i].nargs < 2) {
713                         printk(KERN_ERR "gamecon.c: at least one device must be specified\n");
714                         err = -EINVAL;
715                         break;
716                 }
717
718                 gc_base[i] = gc_probe(gc[i].args[0], gc[i].args + 1, gc[i].nargs - 1);
719                 if (IS_ERR(gc_base[i])) {
720                         err = PTR_ERR(gc_base[i]);
721                         break;
722                 }
723
724                 have_dev = 1;
725         }
726
727         if (err) {
728                 while (--i >= 0)
729                         gc_remove(gc_base[i]);
730                 return err;
731         }
732
733         return have_dev ? 0 : -ENODEV;
734 }
735
736 static void __exit gc_exit(void)
737 {
738         int i;
739
740         for (i = 0; i < GC_MAX_PORTS; i++)
741                 if (gc_base[i])
742                         gc_remove(gc_base[i]);
743 }
744
745 module_init(gc_init);
746 module_exit(gc_exit);