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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / input / joystick / db9.c
blob523959484753fdabf3e9faa2dddb8ca45c8370c4
1 /*
2 * Copyright (c) 1999-2001 Vojtech Pavlik
3 *
4 * Based on the work of:
5 * Andree Borrmann Mats Sjövall
6 */
7
8 /*
9 * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux
10 */
11
12 /*
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 * Should you need to contact me, the author, you can do so either by
28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/delay.h>
35 #include <linux/init.h>
36 #include <linux/parport.h>
37 #include <linux/input.h>
38 #include <linux/mutex.h>
39
40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
42 MODULE_LICENSE("GPL");
43
44 struct db9_config {
45 int args[2];
46 unsigned int nargs;
47 };
48
49 #define DB9_MAX_PORTS 3
50 static struct db9_config db9_cfg[DB9_MAX_PORTS] __initdata;
51
52 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
53 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
54 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
55 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
56 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
57 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
58
59 #define DB9_ARG_PARPORT 0
60 #define DB9_ARG_MODE 1
61
62 #define DB9_MULTI_STICK 0x01
63 #define DB9_MULTI2_STICK 0x02
64 #define DB9_GENESIS_PAD 0x03
65 #define DB9_GENESIS5_PAD 0x05
66 #define DB9_GENESIS6_PAD 0x06
67 #define DB9_SATURN_PAD 0x07
68 #define DB9_MULTI_0802 0x08
69 #define DB9_MULTI_0802_2 0x09
70 #define DB9_CD32_PAD 0x0A
71 #define DB9_SATURN_DPP 0x0B
72 #define DB9_SATURN_DPP_2 0x0C
73 #define DB9_MAX_PAD 0x0D
74
75 #define DB9_UP 0x01
76 #define DB9_DOWN 0x02
77 #define DB9_LEFT 0x04
78 #define DB9_RIGHT 0x08
79 #define DB9_FIRE1 0x10
80 #define DB9_FIRE2 0x20
81 #define DB9_FIRE3 0x40
82 #define DB9_FIRE4 0x80
83
84 #define DB9_NORMAL 0x0a
85 #define DB9_NOSELECT 0x08
86
87 #define DB9_GENESIS6_DELAY 14
88 #define DB9_REFRESH_TIME HZ/100
89
90 #define DB9_MAX_DEVICES 2
91
92 struct db9_mode_data {
93 const char *name;
94 const short *buttons;
95 int n_buttons;
96 int n_pads;
97 int n_axis;
98 int bidirectional;
99 int reverse;
100 };
101
102 struct db9 {
103 struct input_dev *dev[DB9_MAX_DEVICES];
104 struct timer_list timer;
105 struct pardevice *pd;
106 int mode;
107 int used;
108 struct mutex mutex;
109 char phys[DB9_MAX_DEVICES][32];
110 };
111
112 static struct db9 *db9_base[3];
113
114 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
115 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
116 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
117 static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
118
119 static const struct db9_mode_data db9_modes[] = {
120 { NULL, NULL, 0, 0, 0, 0, 0 },
121 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
122 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
123 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
124 { NULL, NULL, 0, 0, 0, 0, 0 },
125 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
126 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
127 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
128 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
129 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
130 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
131 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
132 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
133 };
134
135 /*
136 * Saturn controllers
137 */
138 #define DB9_SATURN_DELAY 300
139 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
140 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
141
142 /*
143 * db9_saturn_write_sub() writes 2 bit data.
144 */
145 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
146 {
147 unsigned char c;
148
149 switch (type) {
150 case 1: /* DPP1 */
151 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
152 parport_write_data(port, c);
153 break;
154 case 2: /* DPP2 */
155 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
156 parport_write_data(port, c);
157 break;
158 case 0: /* DB9 */
159 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
160 parport_write_control(port, c);
161 break;
162 }
163 }
164
165 /*
166 * gc_saturn_read_sub() reads 4 bit data.
167 */
168 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
169 {
170 unsigned char data;
171
172 if (type) {
173 /* DPP */
174 data = parport_read_status(port) ^ 0x80;
175 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
176 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
177 } else {
178 /* DB9 */
179 data = parport_read_data(port) & 0x0f;
180 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
181 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
182 }
183 }
184
185 /*
186 * db9_saturn_read_analog() sends clock and reads 8 bit data.
187 */
188 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
189 {
190 unsigned char data;
191
192 db9_saturn_write_sub(port, type, 0, powered, 0);
193 udelay(DB9_SATURN_DELAY);
194 data = db9_saturn_read_sub(port, type) << 4;
195 db9_saturn_write_sub(port, type, 2, powered, 0);
196 udelay(DB9_SATURN_DELAY);
197 data |= db9_saturn_read_sub(port, type);
198 return data;
199 }
200
201 /*
202 * db9_saturn_read_packet() reads whole saturn packet at connector
203 * and returns device identifier code.
204 */
205 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
206 {
207 int i, j;
208 unsigned char tmp;
209
210 db9_saturn_write_sub(port, type, 3, powered, 0);
211 data[0] = db9_saturn_read_sub(port, type);
212 switch (data[0] & 0x0f) {
213 case 0xf:
214 /* 1111 no pad */
215 return data[0] = 0xff;
216 case 0x4: case 0x4 | 0x8:
217 /* ?100 : digital controller */
218 db9_saturn_write_sub(port, type, 0, powered, 1);
219 data[2] = db9_saturn_read_sub(port, type) << 4;
220 db9_saturn_write_sub(port, type, 2, powered, 1);
221 data[1] = db9_saturn_read_sub(port, type) << 4;
222 db9_saturn_write_sub(port, type, 1, powered, 1);
223 data[1] |= db9_saturn_read_sub(port, type);
224 db9_saturn_write_sub(port, type, 3, powered, 1);
225 /* data[2] |= db9_saturn_read_sub(port, type); */
226 data[2] |= data[0];
227 return data[0] = 0x02;
228 case 0x1:
229 /* 0001 : analog controller or multitap */
230 db9_saturn_write_sub(port, type, 2, powered, 0);
231 udelay(DB9_SATURN_DELAY);
232 data[0] = db9_saturn_read_analog(port, type, powered);
233 if (data[0] != 0x41) {
234 /* read analog controller */
235 for (i = 0; i < (data[0] & 0x0f); i++)
236 data[i + 1] = db9_saturn_read_analog(port, type, powered);
237 db9_saturn_write_sub(port, type, 3, powered, 0);
238 return data[0];
239 } else {
240 /* read multitap */
241 if (db9_saturn_read_analog(port, type, powered) != 0x60)
242 return data[0] = 0xff;
243 for (i = 0; i < 60; i += 10) {
244 data[i] = db9_saturn_read_analog(port, type, powered);
245 if (data[i] != 0xff)
246 /* read each pad */
247 for (j = 0; j < (data[i] & 0x0f); j++)
248 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
249 }
250 db9_saturn_write_sub(port, type, 3, powered, 0);
251 return 0x41;
252 }
253 case 0x0:
254 /* 0000 : mouse */
255 db9_saturn_write_sub(port, type, 2, powered, 0);
256 udelay(DB9_SATURN_DELAY);
257 tmp = db9_saturn_read_analog(port, type, powered);
258 if (tmp == 0xff) {
259 for (i = 0; i < 3; i++)
260 data[i + 1] = db9_saturn_read_analog(port, type, powered);
261 db9_saturn_write_sub(port, type, 3, powered, 0);
262 return data[0] = 0xe3;
263 }
264 default:
265 return data[0];
266 }
267 }
268
269 /*
270 * db9_saturn_report() analyzes packet and reports.
271 */
272 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
273 {
274 struct input_dev *dev;
275 int tmp, i, j;
276
277 tmp = (id == 0x41) ? 60 : 10;
278 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
279 dev = devs[n];
280 switch (data[j]) {
281 case 0x16: /* multi controller (analog 4 axis) */
282 input_report_abs(dev, db9_abs[5], data[j + 6]);
283 case 0x15: /* mission stick (analog 3 axis) */
284 input_report_abs(dev, db9_abs[3], data[j + 4]);
285 input_report_abs(dev, db9_abs[4], data[j + 5]);
286 case 0x13: /* racing controller (analog 1 axis) */
287 input_report_abs(dev, db9_abs[2], data[j + 3]);
288 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
289 case 0x02: /* digital pad (digital 2 axis + buttons) */
290 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
291 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
292 for (i = 0; i < 9; i++)
293 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
294 break;
295 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
296 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
297 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
298 for (i = 0; i < 9; i++)
299 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
300 input_report_abs(dev, db9_abs[2], data[j + 3]);
301 input_report_abs(dev, db9_abs[3], data[j + 4]);
302 input_report_abs(dev, db9_abs[4], data[j + 5]);
303 /*
304 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
305 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
306 */
307 input_report_abs(dev, db9_abs[6], data[j + 7]);
308 input_report_abs(dev, db9_abs[7], data[j + 8]);
309 input_report_abs(dev, db9_abs[5], data[j + 9]);
310 break;
311 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
312 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
313 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
314 break;
315 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
316 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
317 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
318 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
319 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
320 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
321 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
322 break;
323 case 0xff:
324 default: /* no pad */
325 input_report_abs(dev, db9_abs[0], 0);
326 input_report_abs(dev, db9_abs[1], 0);
327 for (i = 0; i < 9; i++)
328 input_report_key(dev, db9_cd32_btn[i], 0);
329 break;
330 }
331 }
332 return n;
333 }
334
335 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
336 {
337 unsigned char id, data[60];
338 int type, n, max_pads;
339 int tmp, i;
340
341 switch (mode) {
342 case DB9_SATURN_PAD:
343 type = 0;
344 n = 1;
345 break;
346 case DB9_SATURN_DPP:
347 type = 1;
348 n = 1;
349 break;
350 case DB9_SATURN_DPP_2:
351 type = 1;
352 n = 2;
353 break;
354 default:
355 return -1;
356 }
357 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
358 for (tmp = 0, i = 0; i < n; i++) {
359 id = db9_saturn_read_packet(port, data, type + i, 1);
360 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
361 }
362 return 0;
363 }
364
365 static void db9_timer(unsigned long private)
366 {
367 struct db9 *db9 = (void *) private;
368 struct parport *port = db9->pd->port;
369 struct input_dev *dev = db9->dev[0];
370 struct input_dev *dev2 = db9->dev[1];
371 int data, i;
372
373 switch (db9->mode) {
374 case DB9_MULTI_0802_2:
375
376 data = parport_read_data(port) >> 3;
377
378 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
379 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
380 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
381
382 case DB9_MULTI_0802:
383
384 data = parport_read_status(port) >> 3;
385
386 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
387 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
388 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
389 break;
390
391 case DB9_MULTI_STICK:
392
393 data = parport_read_data(port);
394
395 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
396 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
397 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
398 break;
399
400 case DB9_MULTI2_STICK:
401
402 data = parport_read_data(port);
403
404 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
405 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
406 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
407 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
408 break;
409
410 case DB9_GENESIS_PAD:
411
412 parport_write_control(port, DB9_NOSELECT);
413 data = parport_read_data(port);
414
415 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
416 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
417 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
418 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
419
420 parport_write_control(port, DB9_NORMAL);
421 data = parport_read_data(port);
422
423 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
424 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
425 break;
426
427 case DB9_GENESIS5_PAD:
428
429 parport_write_control(port, DB9_NOSELECT);
430 data = parport_read_data(port);
431
432 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
433 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
434 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
435 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
436
437 parport_write_control(port, DB9_NORMAL);
438 data = parport_read_data(port);
439
440 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
441 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
442 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
443 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
444 break;
445
446 case DB9_GENESIS6_PAD:
447
448 parport_write_control(port, DB9_NOSELECT); /* 1 */
449 udelay(DB9_GENESIS6_DELAY);
450 data = parport_read_data(port);
451
452 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
453 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
454 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
455 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
456
457 parport_write_control(port, DB9_NORMAL);
458 udelay(DB9_GENESIS6_DELAY);
459 data = parport_read_data(port);
460
461 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
462 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
463
464 parport_write_control(port, DB9_NOSELECT); /* 2 */
465 udelay(DB9_GENESIS6_DELAY);
466 parport_write_control(port, DB9_NORMAL);
467 udelay(DB9_GENESIS6_DELAY);
468 parport_write_control(port, DB9_NOSELECT); /* 3 */
469 udelay(DB9_GENESIS6_DELAY);
470 data=parport_read_data(port);
471
472 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
473 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
474 input_report_key(dev, BTN_Z, ~data & DB9_UP);
475 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
476
477 parport_write_control(port, DB9_NORMAL);
478 udelay(DB9_GENESIS6_DELAY);
479 parport_write_control(port, DB9_NOSELECT); /* 4 */
480 udelay(DB9_GENESIS6_DELAY);
481 parport_write_control(port, DB9_NORMAL);
482 break;
483
484 case DB9_SATURN_PAD:
485 case DB9_SATURN_DPP:
486 case DB9_SATURN_DPP_2:
487
488 db9_saturn(db9->mode, port, db9->dev);
489 break;
490
491 case DB9_CD32_PAD:
492
493 data = parport_read_data(port);
494
495 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
496 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
497
498 parport_write_control(port, 0x0a);
499
500 for (i = 0; i < 7; i++) {
501 data = parport_read_data(port);
502 parport_write_control(port, 0x02);
503 parport_write_control(port, 0x0a);
504 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
505 }
506
507 parport_write_control(port, 0x00);
508 break;
509 }
510
511 input_sync(dev);
512
513 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
514 }
515
516 static int db9_open(struct input_dev *dev)
517 {
518 struct db9 *db9 = input_get_drvdata(dev);
519 struct parport *port = db9->pd->port;
520 int err;
521
522 err = mutex_lock_interruptible(&db9->mutex);
523 if (err)
524 return err;
525
526 if (!db9->used++) {
527 parport_claim(db9->pd);
528 parport_write_data(port, 0xff);
529 if (db9_modes[db9->mode].reverse) {
530 parport_data_reverse(port);
531 parport_write_control(port, DB9_NORMAL);
532 }
533 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
534 }
535
536 mutex_unlock(&db9->mutex);
537 return 0;
538 }
539
540 static void db9_close(struct input_dev *dev)
541 {
542 struct db9 *db9 = input_get_drvdata(dev);
543 struct parport *port = db9->pd->port;
544
545 mutex_lock(&db9->mutex);
546 if (!--db9->used) {
547 del_timer_sync(&db9->timer);
548 parport_write_control(port, 0x00);
549 parport_data_forward(port);
550 parport_release(db9->pd);
551 }
552 mutex_unlock(&db9->mutex);
553 }
554
555 static struct db9 __init *db9_probe(int parport, int mode)
556 {
557 struct db9 *db9;
558 const struct db9_mode_data *db9_mode;
559 struct parport *pp;
560 struct pardevice *pd;
561 struct input_dev *input_dev;
562 int i, j;
563 int err;
564
565 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
566 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
567 err = -EINVAL;
568 goto err_out;
569 }
570
571 db9_mode = &db9_modes[mode];
572
573 pp = parport_find_number(parport);
574 if (!pp) {
575 printk(KERN_ERR "db9.c: no such parport\n");
576 err = -ENODEV;
577 goto err_out;
578 }
579
580 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
581 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
582 err = -EINVAL;
583 goto err_put_pp;
584 }
585
586 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
587 if (!pd) {
588 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
589 err = -EBUSY;
590 goto err_put_pp;
591 }
592
593 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
594 if (!db9) {
595 printk(KERN_ERR "db9.c: Not enough memory\n");
596 err = -ENOMEM;
597 goto err_unreg_pardev;
598 }
599
600 mutex_init(&db9->mutex);
601 db9->pd = pd;
602 db9->mode = mode;
603 init_timer(&db9->timer);
604 db9->timer.data = (long) db9;
605 db9->timer.function = db9_timer;
606
607 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
608
609 db9->dev[i] = input_dev = input_allocate_device();
610 if (!input_dev) {
611 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
612 err = -ENOMEM;
613 goto err_unreg_devs;
614 }
615
616 snprintf(db9->phys[i], sizeof(db9->phys[i]),
617 "%s/input%d", db9->pd->port->name, i);
618
619 input_dev->name = db9_mode->name;
620 input_dev->phys = db9->phys[i];
621 input_dev->id.bustype = BUS_PARPORT;
622 input_dev->id.vendor = 0x0002;
623 input_dev->id.product = mode;
624 input_dev->id.version = 0x0100;
625
626 input_set_drvdata(input_dev, db9);
627
628 input_dev->open = db9_open;
629 input_dev->close = db9_close;
630
631 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
632 for (j = 0; j < db9_mode->n_buttons; j++)
633 set_bit(db9_mode->buttons[j], input_dev->keybit);
634 for (j = 0; j < db9_mode->n_axis; j++) {
635 if (j < 2)
636 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
637 else
638 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
639 }
640
641 err = input_register_device(input_dev);
642 if (err)
643 goto err_free_dev;
644 }
645
646 parport_put_port(pp);
647 return db9;
648
649 err_free_dev:
650 input_free_device(db9->dev[i]);
651 err_unreg_devs:
652 while (--i >= 0)
653 input_unregister_device(db9->dev[i]);
654 kfree(db9);
655 err_unreg_pardev:
656 parport_unregister_device(pd);
657 err_put_pp:
658 parport_put_port(pp);
659 err_out:
660 return ERR_PTR(err);
661 }
662
663 static void db9_remove(struct db9 *db9)
664 {
665 int i;
666
667 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
668 input_unregister_device(db9->dev[i]);
669 parport_unregister_device(db9->pd);
670 kfree(db9);
671 }
672
673 static int __init db9_init(void)
674 {
675 int i;
676 int have_dev = 0;
677 int err = 0;
678
679 for (i = 0; i < DB9_MAX_PORTS; i++) {
680 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
681 continue;
682
683 if (db9_cfg[i].nargs < 2) {
684 printk(KERN_ERR "db9.c: Device type must be specified.\n");
685 err = -EINVAL;
686 break;
687 }
688
689 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT],
690 db9_cfg[i].args[DB9_ARG_MODE]);
691 if (IS_ERR(db9_base[i])) {
692 err = PTR_ERR(db9_base[i]);
693 break;
694 }
695
696 have_dev = 1;
697 }
698
699 if (err) {
700 while (--i >= 0)
701 if (db9_base[i])
702 db9_remove(db9_base[i]);
703 return err;
704 }
705
706 return have_dev ? 0 : -ENODEV;
707 }
708
709 static void __exit db9_exit(void)
710 {
711 int i;
712
713 for (i = 0; i < DB9_MAX_PORTS; i++)
714 if (db9_base[i])
715 db9_remove(db9_base[i]);
716 }
717
718 module_init(db9_init);
719 module_exit(db9_exit);