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[mirror_ubuntu-bionic-kernel.git] / drivers / input / joystick / db9.c
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 #include <linux/slab.h>
40
41 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
42 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
43 MODULE_LICENSE("GPL");
44
45 struct db9_config {
46 int args[2];
47 unsigned int nargs;
48 };
49
50 #define DB9_MAX_PORTS 3
51 static struct db9_config db9_cfg[DB9_MAX_PORTS];
52
53 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
54 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
55 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
56 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
57 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
58 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
59
60 #define DB9_ARG_PARPORT 0
61 #define DB9_ARG_MODE 1
62
63 #define DB9_MULTI_STICK 0x01
64 #define DB9_MULTI2_STICK 0x02
65 #define DB9_GENESIS_PAD 0x03
66 #define DB9_GENESIS5_PAD 0x05
67 #define DB9_GENESIS6_PAD 0x06
68 #define DB9_SATURN_PAD 0x07
69 #define DB9_MULTI_0802 0x08
70 #define DB9_MULTI_0802_2 0x09
71 #define DB9_CD32_PAD 0x0A
72 #define DB9_SATURN_DPP 0x0B
73 #define DB9_SATURN_DPP_2 0x0C
74 #define DB9_MAX_PAD 0x0D
75
76 #define DB9_UP 0x01
77 #define DB9_DOWN 0x02
78 #define DB9_LEFT 0x04
79 #define DB9_RIGHT 0x08
80 #define DB9_FIRE1 0x10
81 #define DB9_FIRE2 0x20
82 #define DB9_FIRE3 0x40
83 #define DB9_FIRE4 0x80
84
85 #define DB9_NORMAL 0x0a
86 #define DB9_NOSELECT 0x08
87
88 #define DB9_GENESIS6_DELAY 14
89 #define DB9_REFRESH_TIME HZ/100
90
91 #define DB9_MAX_DEVICES 2
92
93 struct db9_mode_data {
94 const char *name;
95 const short *buttons;
96 int n_buttons;
97 int n_pads;
98 int n_axis;
99 int bidirectional;
100 int reverse;
101 };
102
103 struct db9 {
104 struct input_dev *dev[DB9_MAX_DEVICES];
105 struct timer_list timer;
106 struct pardevice *pd;
107 int mode;
108 int used;
109 int parportno;
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(struct timer_list *t)
368 {
369 struct db9 *db9 = from_timer(db9, t, timer);
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 void db9_attach(struct parport *pp)
558 {
559 struct db9 *db9;
560 const struct db9_mode_data *db9_mode;
561 struct pardevice *pd;
562 struct input_dev *input_dev;
563 int i, j, port_idx;
564 int mode;
565 struct pardev_cb db9_parport_cb;
566
567 for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) {
568 if (db9_cfg[port_idx].nargs == 0 ||
569 db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0)
570 continue;
571
572 if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number)
573 break;
574 }
575
576 if (port_idx == DB9_MAX_PORTS) {
577 pr_debug("Not using parport%d.\n", pp->number);
578 return;
579 }
580
581 mode = db9_cfg[port_idx].args[DB9_ARG_MODE];
582
583 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
584 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
585 return;
586 }
587
588 db9_mode = &db9_modes[mode];
589
590 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
591 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
592 return;
593 }
594
595 memset(&db9_parport_cb, 0, sizeof(db9_parport_cb));
596 db9_parport_cb.flags = PARPORT_FLAG_EXCL;
597
598 pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx);
599 if (!pd) {
600 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
601 return;
602 }
603
604 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
605 if (!db9)
606 goto err_unreg_pardev;
607
608 mutex_init(&db9->mutex);
609 db9->pd = pd;
610 db9->mode = mode;
611 db9->parportno = pp->number;
612 timer_setup(&db9->timer, db9_timer, 0);
613
614 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
615
616 db9->dev[i] = input_dev = input_allocate_device();
617 if (!input_dev) {
618 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
619 goto err_unreg_devs;
620 }
621
622 snprintf(db9->phys[i], sizeof(db9->phys[i]),
623 "%s/input%d", db9->pd->port->name, i);
624
625 input_dev->name = db9_mode->name;
626 input_dev->phys = db9->phys[i];
627 input_dev->id.bustype = BUS_PARPORT;
628 input_dev->id.vendor = 0x0002;
629 input_dev->id.product = mode;
630 input_dev->id.version = 0x0100;
631
632 input_set_drvdata(input_dev, db9);
633
634 input_dev->open = db9_open;
635 input_dev->close = db9_close;
636
637 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
638 for (j = 0; j < db9_mode->n_buttons; j++)
639 set_bit(db9_mode->buttons[j], input_dev->keybit);
640 for (j = 0; j < db9_mode->n_axis; j++) {
641 if (j < 2)
642 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
643 else
644 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
645 }
646
647 if (input_register_device(input_dev))
648 goto err_free_dev;
649 }
650
651 db9_base[port_idx] = db9;
652 return;
653
654 err_free_dev:
655 input_free_device(db9->dev[i]);
656 err_unreg_devs:
657 while (--i >= 0)
658 input_unregister_device(db9->dev[i]);
659 kfree(db9);
660 err_unreg_pardev:
661 parport_unregister_device(pd);
662 }
663
664 static void db9_detach(struct parport *port)
665 {
666 int i;
667 struct db9 *db9;
668
669 for (i = 0; i < DB9_MAX_PORTS; i++) {
670 if (db9_base[i] && db9_base[i]->parportno == port->number)
671 break;
672 }
673
674 if (i == DB9_MAX_PORTS)
675 return;
676
677 db9 = db9_base[i];
678 db9_base[i] = NULL;
679
680 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
681 input_unregister_device(db9->dev[i]);
682 parport_unregister_device(db9->pd);
683 kfree(db9);
684 }
685
686 static struct parport_driver db9_parport_driver = {
687 .name = "db9",
688 .match_port = db9_attach,
689 .detach = db9_detach,
690 .devmodel = true,
691 };
692
693 static int __init db9_init(void)
694 {
695 int i;
696 int have_dev = 0;
697
698 for (i = 0; i < DB9_MAX_PORTS; i++) {
699 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
700 continue;
701
702 if (db9_cfg[i].nargs < 2) {
703 printk(KERN_ERR "db9.c: Device type must be specified.\n");
704 return -EINVAL;
705 }
706
707 have_dev = 1;
708 }
709
710 if (!have_dev)
711 return -ENODEV;
712
713 return parport_register_driver(&db9_parport_driver);
714 }
715
716 static void __exit db9_exit(void)
717 {
718 parport_unregister_driver(&db9_parport_driver);
719 }
720
721 module_init(db9_init);
722 module_exit(db9_exit);
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