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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / input / joystick / db9.c
blob960e501c60c8627315721118439a1b878a0694ab
1 /*
2 * $Id: db9.c,v 1.13 2002/04/07 20:13:37 vojtech Exp $
3 *
4 * Copyright (c) 1999-2001 Vojtech Pavlik
5 *
6 * Based on the work of:
7 * Andree Borrmann Mats Sjövall
8 */
9
10 /*
11 * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux
12 */
13
14 /*
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 *
29 * Should you need to contact me, the author, you can do so either by
30 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
31 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/delay.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("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
44 MODULE_LICENSE("GPL");
45
46 struct db9_config {
47 int args[2];
48 unsigned int nargs;
49 };
50
51 #define DB9_MAX_PORTS 3
52 static struct db9_config db9_cfg[DB9_MAX_PORTS] __initdata;
53
54 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
55 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
56 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
57 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
58 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
59 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
60
61 #define DB9_ARG_PARPORT 0
62 #define DB9_ARG_MODE 1
63
64 #define DB9_MULTI_STICK 0x01
65 #define DB9_MULTI2_STICK 0x02
66 #define DB9_GENESIS_PAD 0x03
67 #define DB9_GENESIS5_PAD 0x05
68 #define DB9_GENESIS6_PAD 0x06
69 #define DB9_SATURN_PAD 0x07
70 #define DB9_MULTI_0802 0x08
71 #define DB9_MULTI_0802_2 0x09
72 #define DB9_CD32_PAD 0x0A
73 #define DB9_SATURN_DPP 0x0B
74 #define DB9_SATURN_DPP_2 0x0C
75 #define DB9_MAX_PAD 0x0D
76
77 #define DB9_UP 0x01
78 #define DB9_DOWN 0x02
79 #define DB9_LEFT 0x04
80 #define DB9_RIGHT 0x08
81 #define DB9_FIRE1 0x10
82 #define DB9_FIRE2 0x20
83 #define DB9_FIRE3 0x40
84 #define DB9_FIRE4 0x80
85
86 #define DB9_NORMAL 0x0a
87 #define DB9_NOSELECT 0x08
88
89 #define DB9_GENESIS6_DELAY 14
90 #define DB9_REFRESH_TIME HZ/100
91
92 #define DB9_MAX_DEVICES 2
93
94 struct db9_mode_data {
95 const char *name;
96 const short *buttons;
97 int n_buttons;
98 int n_pads;
99 int n_axis;
100 int bidirectional;
101 int reverse;
102 };
103
104 struct db9 {
105 struct input_dev *dev[DB9_MAX_DEVICES];
106 struct timer_list timer;
107 struct pardevice *pd;
108 int mode;
109 int used;
110 struct mutex mutex;
111 char phys[DB9_MAX_DEVICES][32];
112 };
113
114 static struct db9 *db9_base[3];
115
116 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
117 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
118 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
119 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 };
120
121 static const struct db9_mode_data db9_modes[] = {
122 { NULL, NULL, 0, 0, 0, 0, 0 },
123 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
124 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
125 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
126 { NULL, NULL, 0, 0, 0, 0, 0 },
127 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
128 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
129 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
130 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
131 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
132 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
133 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
134 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
135 };
136
137 /*
138 * Saturn controllers
139 */
140 #define DB9_SATURN_DELAY 300
141 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
142 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
143
144 /*
145 * db9_saturn_write_sub() writes 2 bit data.
146 */
147 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
148 {
149 unsigned char c;
150
151 switch (type) {
152 case 1: /* DPP1 */
153 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
154 parport_write_data(port, c);
155 break;
156 case 2: /* DPP2 */
157 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
158 parport_write_data(port, c);
159 break;
160 case 0: /* DB9 */
161 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
162 parport_write_control(port, c);
163 break;
164 }
165 }
166
167 /*
168 * gc_saturn_read_sub() reads 4 bit data.
169 */
170 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
171 {
172 unsigned char data;
173
174 if (type) {
175 /* DPP */
176 data = parport_read_status(port) ^ 0x80;
177 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
178 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
179 } else {
180 /* DB9 */
181 data = parport_read_data(port) & 0x0f;
182 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
183 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
184 }
185 }
186
187 /*
188 * db9_saturn_read_analog() sends clock and reads 8 bit data.
189 */
190 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
191 {
192 unsigned char data;
193
194 db9_saturn_write_sub(port, type, 0, powered, 0);
195 udelay(DB9_SATURN_DELAY);
196 data = db9_saturn_read_sub(port, type) << 4;
197 db9_saturn_write_sub(port, type, 2, powered, 0);
198 udelay(DB9_SATURN_DELAY);
199 data |= db9_saturn_read_sub(port, type);
200 return data;
201 }
202
203 /*
204 * db9_saturn_read_packet() reads whole saturn packet at connector
205 * and returns device identifier code.
206 */
207 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
208 {
209 int i, j;
210 unsigned char tmp;
211
212 db9_saturn_write_sub(port, type, 3, powered, 0);
213 data[0] = db9_saturn_read_sub(port, type);
214 switch (data[0] & 0x0f) {
215 case 0xf:
216 /* 1111 no pad */
217 return data[0] = 0xff;
218 case 0x4: case 0x4 | 0x8:
219 /* ?100 : digital controller */
220 db9_saturn_write_sub(port, type, 0, powered, 1);
221 data[2] = db9_saturn_read_sub(port, type) << 4;
222 db9_saturn_write_sub(port, type, 2, powered, 1);
223 data[1] = db9_saturn_read_sub(port, type) << 4;
224 db9_saturn_write_sub(port, type, 1, powered, 1);
225 data[1] |= db9_saturn_read_sub(port, type);
226 db9_saturn_write_sub(port, type, 3, powered, 1);
227 /* data[2] |= db9_saturn_read_sub(port, type); */
228 data[2] |= data[0];
229 return data[0] = 0x02;
230 case 0x1:
231 /* 0001 : analog controller or multitap */
232 db9_saturn_write_sub(port, type, 2, powered, 0);
233 udelay(DB9_SATURN_DELAY);
234 data[0] = db9_saturn_read_analog(port, type, powered);
235 if (data[0] != 0x41) {
236 /* read analog controller */
237 for (i = 0; i < (data[0] & 0x0f); i++)
238 data[i + 1] = db9_saturn_read_analog(port, type, powered);
239 db9_saturn_write_sub(port, type, 3, powered, 0);
240 return data[0];
241 } else {
242 /* read multitap */
243 if (db9_saturn_read_analog(port, type, powered) != 0x60)
244 return data[0] = 0xff;
245 for (i = 0; i < 60; i += 10) {
246 data[i] = db9_saturn_read_analog(port, type, powered);
247 if (data[i] != 0xff)
248 /* read each pad */
249 for (j = 0; j < (data[i] & 0x0f); j++)
250 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
251 }
252 db9_saturn_write_sub(port, type, 3, powered, 0);
253 return 0x41;
254 }
255 case 0x0:
256 /* 0000 : mouse */
257 db9_saturn_write_sub(port, type, 2, powered, 0);
258 udelay(DB9_SATURN_DELAY);
259 tmp = db9_saturn_read_analog(port, type, powered);
260 if (tmp == 0xff) {
261 for (i = 0; i < 3; i++)
262 data[i + 1] = db9_saturn_read_analog(port, type, powered);
263 db9_saturn_write_sub(port, type, 3, powered, 0);
264 return data[0] = 0xe3;
265 }
266 default:
267 return data[0];
268 }
269 }
270
271 /*
272 * db9_saturn_report() analyzes packet and reports.
273 */
274 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
275 {
276 struct input_dev *dev;
277 int tmp, i, j;
278
279 tmp = (id == 0x41) ? 60 : 10;
280 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
281 dev = devs[n];
282 switch (data[j]) {
283 case 0x16: /* multi controller (analog 4 axis) */
284 input_report_abs(dev, db9_abs[5], data[j + 6]);
285 case 0x15: /* mission stick (analog 3 axis) */
286 input_report_abs(dev, db9_abs[3], data[j + 4]);
287 input_report_abs(dev, db9_abs[4], data[j + 5]);
288 case 0x13: /* racing controller (analog 1 axis) */
289 input_report_abs(dev, db9_abs[2], data[j + 3]);
290 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
291 case 0x02: /* digital pad (digital 2 axis + buttons) */
292 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
293 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
294 for (i = 0; i < 9; i++)
295 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
296 break;
297 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
298 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
299 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
300 for (i = 0; i < 9; i++)
301 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
302 input_report_abs(dev, db9_abs[2], data[j + 3]);
303 input_report_abs(dev, db9_abs[3], data[j + 4]);
304 input_report_abs(dev, db9_abs[4], data[j + 5]);
305 /*
306 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
307 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
308 */
309 input_report_abs(dev, db9_abs[6], data[j + 7]);
310 input_report_abs(dev, db9_abs[7], data[j + 8]);
311 input_report_abs(dev, db9_abs[5], data[j + 9]);
312 break;
313 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
314 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
315 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
316 break;
317 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
318 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
319 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
320 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
321 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
322 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
323 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
324 break;
325 case 0xff:
326 default: /* no pad */
327 input_report_abs(dev, db9_abs[0], 0);
328 input_report_abs(dev, db9_abs[1], 0);
329 for (i = 0; i < 9; i++)
330 input_report_key(dev, db9_cd32_btn[i], 0);
331 break;
332 }
333 }
334 return n;
335 }
336
337 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
338 {
339 unsigned char id, data[60];
340 int type, n, max_pads;
341 int tmp, i;
342
343 switch (mode) {
344 case DB9_SATURN_PAD:
345 type = 0;
346 n = 1;
347 break;
348 case DB9_SATURN_DPP:
349 type = 1;
350 n = 1;
351 break;
352 case DB9_SATURN_DPP_2:
353 type = 1;
354 n = 2;
355 break;
356 default:
357 return -1;
358 }
359 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
360 for (tmp = 0, i = 0; i < n; i++) {
361 id = db9_saturn_read_packet(port, data, type + i, 1);
362 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
363 }
364 return 0;
365 }
366
367 static void db9_timer(unsigned long private)
368 {
369 struct db9 *db9 = (void *) private;
370 struct parport *port = db9->pd->port;
371 struct input_dev *dev = db9->dev[0];
372 struct input_dev *dev2 = db9->dev[1];
373 int data, i;
374
375 switch (db9->mode) {
376 case DB9_MULTI_0802_2:
377
378 data = parport_read_data(port) >> 3;
379
380 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
381 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
382 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
383
384 case DB9_MULTI_0802:
385
386 data = parport_read_status(port) >> 3;
387
388 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
389 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
390 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
391 break;
392
393 case DB9_MULTI_STICK:
394
395 data = parport_read_data(port);
396
397 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
398 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
399 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
400 break;
401
402 case DB9_MULTI2_STICK:
403
404 data = parport_read_data(port);
405
406 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
407 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
408 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
409 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
410 break;
411
412 case DB9_GENESIS_PAD:
413
414 parport_write_control(port, DB9_NOSELECT);
415 data = parport_read_data(port);
416
417 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
418 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
419 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
420 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
421
422 parport_write_control(port, DB9_NORMAL);
423 data = parport_read_data(port);
424
425 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
426 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
427 break;
428
429 case DB9_GENESIS5_PAD:
430
431 parport_write_control(port, DB9_NOSELECT);
432 data = parport_read_data(port);
433
434 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
435 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
436 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
437 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
438
439 parport_write_control(port, DB9_NORMAL);
440 data = parport_read_data(port);
441
442 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
443 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
444 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
445 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
446 break;
447
448 case DB9_GENESIS6_PAD:
449
450 parport_write_control(port, DB9_NOSELECT); /* 1 */
451 udelay(DB9_GENESIS6_DELAY);
452 data = parport_read_data(port);
453
454 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
455 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
456 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
457 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
458
459 parport_write_control(port, DB9_NORMAL);
460 udelay(DB9_GENESIS6_DELAY);
461 data = parport_read_data(port);
462
463 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
464 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
465
466 parport_write_control(port, DB9_NOSELECT); /* 2 */
467 udelay(DB9_GENESIS6_DELAY);
468 parport_write_control(port, DB9_NORMAL);
469 udelay(DB9_GENESIS6_DELAY);
470 parport_write_control(port, DB9_NOSELECT); /* 3 */
471 udelay(DB9_GENESIS6_DELAY);
472 data=parport_read_data(port);
473
474 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
475 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
476 input_report_key(dev, BTN_Z, ~data & DB9_UP);
477 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
478
479 parport_write_control(port, DB9_NORMAL);
480 udelay(DB9_GENESIS6_DELAY);
481 parport_write_control(port, DB9_NOSELECT); /* 4 */
482 udelay(DB9_GENESIS6_DELAY);
483 parport_write_control(port, DB9_NORMAL);
484 break;
485
486 case DB9_SATURN_PAD:
487 case DB9_SATURN_DPP:
488 case DB9_SATURN_DPP_2:
489
490 db9_saturn(db9->mode, port, db9->dev);
491 break;
492
493 case DB9_CD32_PAD:
494
495 data = parport_read_data(port);
496
497 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
498 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
499
500 parport_write_control(port, 0x0a);
501
502 for (i = 0; i < 7; i++) {
503 data = parport_read_data(port);
504 parport_write_control(port, 0x02);
505 parport_write_control(port, 0x0a);
506 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
507 }
508
509 parport_write_control(port, 0x00);
510 break;
511 }
512
513 input_sync(dev);
514
515 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
516 }
517
518 static int db9_open(struct input_dev *dev)
519 {
520 struct db9 *db9 = input_get_drvdata(dev);
521 struct parport *port = db9->pd->port;
522 int err;
523
524 err = mutex_lock_interruptible(&db9->mutex);
525 if (err)
526 return err;
527
528 if (!db9->used++) {
529 parport_claim(db9->pd);
530 parport_write_data(port, 0xff);
531 if (db9_modes[db9->mode].reverse) {
532 parport_data_reverse(port);
533 parport_write_control(port, DB9_NORMAL);
534 }
535 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
536 }
537
538 mutex_unlock(&db9->mutex);
539 return 0;
540 }
541
542 static void db9_close(struct input_dev *dev)
543 {
544 struct db9 *db9 = input_get_drvdata(dev);
545 struct parport *port = db9->pd->port;
546
547 mutex_lock(&db9->mutex);
548 if (!--db9->used) {
549 del_timer_sync(&db9->timer);
550 parport_write_control(port, 0x00);
551 parport_data_forward(port);
552 parport_release(db9->pd);
553 }
554 mutex_unlock(&db9->mutex);
555 }
556
557 static struct db9 __init *db9_probe(int parport, int mode)
558 {
559 struct db9 *db9;
560 const struct db9_mode_data *db9_mode;
561 struct parport *pp;
562 struct pardevice *pd;
563 struct input_dev *input_dev;
564 int i, j;
565 int err;
566
567 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
568 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
569 err = -EINVAL;
570 goto err_out;
571 }
572
573 db9_mode = &db9_modes[mode];
574
575 pp = parport_find_number(parport);
576 if (!pp) {
577 printk(KERN_ERR "db9.c: no such parport\n");
578 err = -ENODEV;
579 goto err_out;
580 }
581
582 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
583 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
584 err = -EINVAL;
585 goto err_put_pp;
586 }
587
588 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
589 if (!pd) {
590 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
591 err = -EBUSY;
592 goto err_put_pp;
593 }
594
595 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
596 if (!db9) {
597 printk(KERN_ERR "db9.c: Not enough memory\n");
598 err = -ENOMEM;
599 goto err_unreg_pardev;
600 }
601
602 mutex_init(&db9->mutex);
603 db9->pd = pd;
604 db9->mode = mode;
605 init_timer(&db9->timer);
606 db9->timer.data = (long) db9;
607 db9->timer.function = db9_timer;
608
609 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
610
611 db9->dev[i] = input_dev = input_allocate_device();
612 if (!input_dev) {
613 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
614 err = -ENOMEM;
615 goto err_unreg_devs;
616 }
617
618 snprintf(db9->phys[i], sizeof(db9->phys[i]),
619 "%s/input%d", db9->pd->port->name, i);
620
621 input_dev->name = db9_mode->name;
622 input_dev->phys = db9->phys[i];
623 input_dev->id.bustype = BUS_PARPORT;
624 input_dev->id.vendor = 0x0002;
625 input_dev->id.product = mode;
626 input_dev->id.version = 0x0100;
627
628 input_set_drvdata(input_dev, db9);
629
630 input_dev->open = db9_open;
631 input_dev->close = db9_close;
632
633 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
634 for (j = 0; j < db9_mode->n_buttons; j++)
635 set_bit(db9_mode->buttons[j], input_dev->keybit);
636 for (j = 0; j < db9_mode->n_axis; j++) {
637 if (j < 2)
638 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
639 else
640 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
641 }
642
643 err = input_register_device(input_dev);
644 if (err)
645 goto err_free_dev;
646 }
647
648 parport_put_port(pp);
649 return db9;
650
651 err_free_dev:
652 input_free_device(db9->dev[i]);
653 err_unreg_devs:
654 while (--i >= 0)
655 input_unregister_device(db9->dev[i]);
656 kfree(db9);
657 err_unreg_pardev:
658 parport_unregister_device(pd);
659 err_put_pp:
660 parport_put_port(pp);
661 err_out:
662 return ERR_PTR(err);
663 }
664
665 static void db9_remove(struct db9 *db9)
666 {
667 int i;
668
669 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
670 input_unregister_device(db9->dev[i]);
671 parport_unregister_device(db9->pd);
672 kfree(db9);
673 }
674
675 static int __init db9_init(void)
676 {
677 int i;
678 int have_dev = 0;
679 int err = 0;
680
681 for (i = 0; i < DB9_MAX_PORTS; i++) {
682 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
683 continue;
684
685 if (db9_cfg[i].nargs < 2) {
686 printk(KERN_ERR "db9.c: Device type must be specified.\n");
687 err = -EINVAL;
688 break;
689 }
690
691 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT],
692 db9_cfg[i].args[DB9_ARG_MODE]);
693 if (IS_ERR(db9_base[i])) {
694 err = PTR_ERR(db9_base[i]);
695 break;
696 }
697
698 have_dev = 1;
699 }
700
701 if (err) {
702 while (--i >= 0)
703 if (db9_base[i])
704 db9_remove(db9_base[i]);
705 return err;
706 }
707
708 return have_dev ? 0 : -ENODEV;
709 }
710
711 static void __exit db9_exit(void)
712 {
713 int i;
714
715 for (i = 0; i < DB9_MAX_PORTS; i++)
716 if (db9_base[i])
717 db9_remove(db9_base[i]);
718 }
719
720 module_init(db9_init);
721 module_exit(db9_exit);
WRT350N Kernel Patches