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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 1999-2001 Vojtech Pavlik
4 *
5 * Based on the work of:
6 * Andree Borrmann Mats Sjövall
7 */
8
9/*
10 * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux
11 */
12
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/delay.h>
16#include <linux/init.h>
17#include <linux/parport.h>
18#include <linux/input.h>
19#include <linux/mutex.h>
20#include <linux/slab.h>
21
22MODULE_AUTHOR("Vojtech Pavlik <[email protected]>");
23MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
24MODULE_LICENSE("GPL");
25
26struct db9_config {
27 int args[2];
28 unsigned int nargs;
29};
30
31#define DB9_MAX_PORTS 3
32static struct db9_config db9_cfg[DB9_MAX_PORTS];
33
34module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
35MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
36module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
37MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
38module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
39MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
40
41#define DB9_ARG_PARPORT 0
42#define DB9_ARG_MODE 1
43
44#define DB9_MULTI_STICK 0x01
45#define DB9_MULTI2_STICK 0x02
46#define DB9_GENESIS_PAD 0x03
47#define DB9_GENESIS5_PAD 0x05
48#define DB9_GENESIS6_PAD 0x06
49#define DB9_SATURN_PAD 0x07
50#define DB9_MULTI_0802 0x08
51#define DB9_MULTI_0802_2 0x09
52#define DB9_CD32_PAD 0x0A
53#define DB9_SATURN_DPP 0x0B
54#define DB9_SATURN_DPP_2 0x0C
55#define DB9_MAX_PAD 0x0D
56
57#define DB9_UP 0x01
58#define DB9_DOWN 0x02
59#define DB9_LEFT 0x04
60#define DB9_RIGHT 0x08
61#define DB9_FIRE1 0x10
62#define DB9_FIRE2 0x20
63#define DB9_FIRE3 0x40
64#define DB9_FIRE4 0x80
65
66#define DB9_NORMAL 0x0a
67#define DB9_NOSELECT 0x08
68
69#define DB9_GENESIS6_DELAY 14
70#define DB9_REFRESH_TIME HZ/100
71
72#define DB9_MAX_DEVICES 2
73
74struct db9_mode_data {
75 const char *name;
76 const short *buttons;
77 int n_buttons;
78 int n_pads;
79 int n_axis;
80 int bidirectional;
81 int reverse;
82};
83
84struct db9 {
85 struct input_dev *dev[DB9_MAX_DEVICES];
86 struct timer_list timer;
87 struct pardevice *pd;
88 int mode;
89 int used;
90 int parportno;
91 struct mutex mutex;
92 char phys[DB9_MAX_DEVICES][32];
93};
94
95static struct db9 *db9_base[3];
96
97static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
98static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
99static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
100static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
101
102static const struct db9_mode_data db9_modes[] = {
103 { NULL, NULL, 0, 0, 0, 0, 0 },
104 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
105 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
106 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
107 { NULL, NULL, 0, 0, 0, 0, 0 },
108 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
109 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
110 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
111 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
112 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
113 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
114 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
115 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
116};
117
118/*
119 * Saturn controllers
120 */
121#define DB9_SATURN_DELAY 300
122static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
123static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
124
125/*
126 * db9_saturn_write_sub() writes 2 bit data.
127 */
128static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
129{
130 unsigned char c;
131
132 switch (type) {
133 case 1: /* DPP1 */
134 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
135 parport_write_data(port, c);
136 break;
137 case 2: /* DPP2 */
138 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
139 parport_write_data(port, c);
140 break;
141 case 0: /* DB9 */
142 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
143 parport_write_control(port, c);
144 break;
145 }
146}
147
148/*
149 * gc_saturn_read_sub() reads 4 bit data.
150 */
151static unsigned char db9_saturn_read_sub(struct parport *port, int type)
152{
153 unsigned char data;
154
155 if (type) {
156 /* DPP */
157 data = parport_read_status(port) ^ 0x80;
158 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
159 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
160 } else {
161 /* DB9 */
162 data = parport_read_data(port) & 0x0f;
163 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
164 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
165 }
166}
167
168/*
169 * db9_saturn_read_analog() sends clock and reads 8 bit data.
170 */
171static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
172{
173 unsigned char data;
174
175 db9_saturn_write_sub(port, type, 0, powered, 0);
176 udelay(DB9_SATURN_DELAY);
177 data = db9_saturn_read_sub(port, type) << 4;
178 db9_saturn_write_sub(port, type, 2, powered, 0);
179 udelay(DB9_SATURN_DELAY);
180 data |= db9_saturn_read_sub(port, type);
181 return data;
182}
183
184/*
185 * db9_saturn_read_packet() reads whole saturn packet at connector
186 * and returns device identifier code.
187 */
188static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
189{
190 int i, j;
191 unsigned char tmp;
192
193 db9_saturn_write_sub(port, type, 3, powered, 0);
194 data[0] = db9_saturn_read_sub(port, type);
195 switch (data[0] & 0x0f) {
196 case 0xf:
197 /* 1111 no pad */
198 return data[0] = 0xff;
199 case 0x4: case 0x4 | 0x8:
200 /* ?100 : digital controller */
201 db9_saturn_write_sub(port, type, 0, powered, 1);
202 data[2] = db9_saturn_read_sub(port, type) << 4;
203 db9_saturn_write_sub(port, type, 2, powered, 1);
204 data[1] = db9_saturn_read_sub(port, type) << 4;
205 db9_saturn_write_sub(port, type, 1, powered, 1);
206 data[1] |= db9_saturn_read_sub(port, type);
207 db9_saturn_write_sub(port, type, 3, powered, 1);
208 /* data[2] |= db9_saturn_read_sub(port, type); */
209 data[2] |= data[0];
210 return data[0] = 0x02;
211 case 0x1:
212 /* 0001 : analog controller or multitap */
213 db9_saturn_write_sub(port, type, 2, powered, 0);
214 udelay(DB9_SATURN_DELAY);
215 data[0] = db9_saturn_read_analog(port, type, powered);
216 if (data[0] != 0x41) {
217 /* read analog controller */
218 for (i = 0; i < (data[0] & 0x0f); i++)
219 data[i + 1] = db9_saturn_read_analog(port, type, powered);
220 db9_saturn_write_sub(port, type, 3, powered, 0);
221 return data[0];
222 } else {
223 /* read multitap */
224 if (db9_saturn_read_analog(port, type, powered) != 0x60)
225 return data[0] = 0xff;
226 for (i = 0; i < 60; i += 10) {
227 data[i] = db9_saturn_read_analog(port, type, powered);
228 if (data[i] != 0xff)
229 /* read each pad */
230 for (j = 0; j < (data[i] & 0x0f); j++)
231 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
232 }
233 db9_saturn_write_sub(port, type, 3, powered, 0);
234 return 0x41;
235 }
236 case 0x0:
237 /* 0000 : mouse */
238 db9_saturn_write_sub(port, type, 2, powered, 0);
239 udelay(DB9_SATURN_DELAY);
240 tmp = db9_saturn_read_analog(port, type, powered);
241 if (tmp == 0xff) {
242 for (i = 0; i < 3; i++)
243 data[i + 1] = db9_saturn_read_analog(port, type, powered);
244 db9_saturn_write_sub(port, type, 3, powered, 0);
245 return data[0] = 0xe3;
246 }
247 fallthrough;
248 default:
249 return data[0];
250 }
251}
252
253/*
254 * db9_saturn_report() analyzes packet and reports.
255 */
256static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
257{
258 struct input_dev *dev;
259 int tmp, i, j;
260
261 tmp = (id == 0x41) ? 60 : 10;
262 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
263 dev = devs[n];
264 switch (data[j]) {
265 case 0x16: /* multi controller (analog 4 axis) */
266 input_report_abs(dev, db9_abs[5], data[j + 6]);
267 fallthrough;
268 case 0x15: /* mission stick (analog 3 axis) */
269 input_report_abs(dev, db9_abs[3], data[j + 4]);
270 input_report_abs(dev, db9_abs[4], data[j + 5]);
271 fallthrough;
272 case 0x13: /* racing controller (analog 1 axis) */
273 input_report_abs(dev, db9_abs[2], data[j + 3]);
274 fallthrough;
275 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
276 case 0x02: /* digital pad (digital 2 axis + buttons) */
277 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
278 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
279 for (i = 0; i < 9; i++)
280 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
281 break;
282 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
283 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
284 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
285 for (i = 0; i < 9; i++)
286 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
287 input_report_abs(dev, db9_abs[2], data[j + 3]);
288 input_report_abs(dev, db9_abs[3], data[j + 4]);
289 input_report_abs(dev, db9_abs[4], data[j + 5]);
290 /*
291 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
292 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
293 */
294 input_report_abs(dev, db9_abs[6], data[j + 7]);
295 input_report_abs(dev, db9_abs[7], data[j + 8]);
296 input_report_abs(dev, db9_abs[5], data[j + 9]);
297 break;
298 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
299 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
300 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
301 break;
302 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
303 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
304 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
305 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
306 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
307 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
308 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
309 break;
310 case 0xff:
311 default: /* no pad */
312 input_report_abs(dev, db9_abs[0], 0);
313 input_report_abs(dev, db9_abs[1], 0);
314 for (i = 0; i < 9; i++)
315 input_report_key(dev, db9_cd32_btn[i], 0);
316 break;
317 }
318 }
319 return n;
320}
321
322static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
323{
324 unsigned char id, data[60];
325 int type, n, max_pads;
326 int tmp, i;
327
328 switch (mode) {
329 case DB9_SATURN_PAD:
330 type = 0;
331 n = 1;
332 break;
333 case DB9_SATURN_DPP:
334 type = 1;
335 n = 1;
336 break;
337 case DB9_SATURN_DPP_2:
338 type = 1;
339 n = 2;
340 break;
341 default:
342 return -1;
343 }
344 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
345 for (tmp = 0, i = 0; i < n; i++) {
346 id = db9_saturn_read_packet(port, data, type + i, 1);
347 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
348 }
349 return 0;
350}
351
352static void db9_timer(struct timer_list *t)
353{
354 struct db9 *db9 = timer_container_of(db9, t, timer);
355 struct parport *port = db9->pd->port;
356 struct input_dev *dev = db9->dev[0];
357 struct input_dev *dev2 = db9->dev[1];
358 int data, i;
359
360 switch (db9->mode) {
361 case DB9_MULTI_0802_2:
362
363 data = parport_read_data(port) >> 3;
364
365 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
366 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
367 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
368 fallthrough;
369
370 case DB9_MULTI_0802:
371
372 data = parport_read_status(port) >> 3;
373
374 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
375 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
376 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
377 break;
378
379 case DB9_MULTI_STICK:
380
381 data = parport_read_data(port);
382
383 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
384 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
385 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
386 break;
387
388 case DB9_MULTI2_STICK:
389
390 data = parport_read_data(port);
391
392 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
393 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
394 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
395 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
396 break;
397
398 case DB9_GENESIS_PAD:
399
400 parport_write_control(port, DB9_NOSELECT);
401 data = parport_read_data(port);
402
403 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
404 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
405 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
406 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
407
408 parport_write_control(port, DB9_NORMAL);
409 data = parport_read_data(port);
410
411 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
412 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
413 break;
414
415 case DB9_GENESIS5_PAD:
416
417 parport_write_control(port, DB9_NOSELECT);
418 data = parport_read_data(port);
419
420 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
421 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
422 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
423 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
424
425 parport_write_control(port, DB9_NORMAL);
426 data = parport_read_data(port);
427
428 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
429 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
430 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
431 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
432 break;
433
434 case DB9_GENESIS6_PAD:
435
436 parport_write_control(port, DB9_NOSELECT); /* 1 */
437 udelay(DB9_GENESIS6_DELAY);
438 data = parport_read_data(port);
439
440 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
441 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
442 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
443 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
444
445 parport_write_control(port, DB9_NORMAL);
446 udelay(DB9_GENESIS6_DELAY);
447 data = parport_read_data(port);
448
449 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
450 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
451
452 parport_write_control(port, DB9_NOSELECT); /* 2 */
453 udelay(DB9_GENESIS6_DELAY);
454 parport_write_control(port, DB9_NORMAL);
455 udelay(DB9_GENESIS6_DELAY);
456 parport_write_control(port, DB9_NOSELECT); /* 3 */
457 udelay(DB9_GENESIS6_DELAY);
458 data=parport_read_data(port);
459
460 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
461 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
462 input_report_key(dev, BTN_Z, ~data & DB9_UP);
463 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
464
465 parport_write_control(port, DB9_NORMAL);
466 udelay(DB9_GENESIS6_DELAY);
467 parport_write_control(port, DB9_NOSELECT); /* 4 */
468 udelay(DB9_GENESIS6_DELAY);
469 parport_write_control(port, DB9_NORMAL);
470 break;
471
472 case DB9_SATURN_PAD:
473 case DB9_SATURN_DPP:
474 case DB9_SATURN_DPP_2:
475
476 db9_saturn(db9->mode, port, db9->dev);
477 break;
478
479 case DB9_CD32_PAD:
480
481 data = parport_read_data(port);
482
483 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
484 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
485
486 parport_write_control(port, 0x0a);
487
488 for (i = 0; i < 7; i++) {
489 data = parport_read_data(port);
490 parport_write_control(port, 0x02);
491 parport_write_control(port, 0x0a);
492 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
493 }
494
495 parport_write_control(port, 0x00);
496 break;
497 }
498
499 input_sync(dev);
500
501 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
502}
503
504static int db9_open(struct input_dev *dev)
505{
506 struct db9 *db9 = input_get_drvdata(dev);
507 struct parport *port = db9->pd->port;
508
509 scoped_guard(mutex_intr, &db9->mutex) {
510 if (!db9->used++) {
511 parport_claim(db9->pd);
512 parport_write_data(port, 0xff);
513 if (db9_modes[db9->mode].reverse) {
514 parport_data_reverse(port);
515 parport_write_control(port, DB9_NORMAL);
516 }
517 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
518 }
519
520 return 0;
521 }
522
523 return -EINTR;
524}
525
526static void db9_close(struct input_dev *dev)
527{
528 struct db9 *db9 = input_get_drvdata(dev);
529 struct parport *port = db9->pd->port;
530
531 guard(mutex)(&db9->mutex);
532
533 if (!--db9->used) {
534 timer_delete_sync(&db9->timer);
535 parport_write_control(port, 0x00);
536 parport_data_forward(port);
537 parport_release(db9->pd);
538 }
539}
540
541static void db9_attach(struct parport *pp)
542{
543 struct db9 *db9;
544 const struct db9_mode_data *db9_mode;
545 struct pardevice *pd;
546 struct input_dev *input_dev;
547 int i, j, port_idx;
548 int mode;
549 struct pardev_cb db9_parport_cb;
550
551 for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) {
552 if (db9_cfg[port_idx].nargs == 0 ||
553 db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0)
554 continue;
555
556 if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number)
557 break;
558 }
559
560 if (port_idx == DB9_MAX_PORTS) {
561 pr_debug("Not using parport%d.\n", pp->number);
562 return;
563 }
564
565 mode = db9_cfg[port_idx].args[DB9_ARG_MODE];
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 return;
570 }
571
572 db9_mode = &db9_modes[mode];
573
574 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
575 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
576 return;
577 }
578
579 memset(&db9_parport_cb, 0, sizeof(db9_parport_cb));
580 db9_parport_cb.flags = PARPORT_FLAG_EXCL;
581
582 pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx);
583 if (!pd) {
584 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
585 return;
586 }
587
588 db9 = kzalloc_obj(*db9);
589 if (!db9)
590 goto err_unreg_pardev;
591
592 mutex_init(&db9->mutex);
593 db9->pd = pd;
594 db9->mode = mode;
595 db9->parportno = pp->number;
596 timer_setup(&db9->timer, db9_timer, 0);
597
598 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
599
600 db9->dev[i] = input_dev = input_allocate_device();
601 if (!input_dev) {
602 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
603 goto err_unreg_devs;
604 }
605
606 snprintf(db9->phys[i], sizeof(db9->phys[i]),
607 "%s/input%d", db9->pd->port->name, i);
608
609 input_dev->name = db9_mode->name;
610 input_dev->phys = db9->phys[i];
611 input_dev->id.bustype = BUS_PARPORT;
612 input_dev->id.vendor = 0x0002;
613 input_dev->id.product = mode;
614 input_dev->id.version = 0x0100;
615
616 input_set_drvdata(input_dev, db9);
617
618 input_dev->open = db9_open;
619 input_dev->close = db9_close;
620
621 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
622 for (j = 0; j < db9_mode->n_buttons; j++)
623 set_bit(db9_mode->buttons[j], input_dev->keybit);
624 for (j = 0; j < db9_mode->n_axis; j++) {
625 if (j < 2)
626 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
627 else
628 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
629 }
630
631 if (input_register_device(input_dev))
632 goto err_free_dev;
633 }
634
635 db9_base[port_idx] = db9;
636 return;
637
638 err_free_dev:
639 input_free_device(db9->dev[i]);
640 err_unreg_devs:
641 while (--i >= 0)
642 input_unregister_device(db9->dev[i]);
643 kfree(db9);
644 err_unreg_pardev:
645 parport_unregister_device(pd);
646}
647
648static void db9_detach(struct parport *port)
649{
650 int i;
651 struct db9 *db9;
652
653 for (i = 0; i < DB9_MAX_PORTS; i++) {
654 if (db9_base[i] && db9_base[i]->parportno == port->number)
655 break;
656 }
657
658 if (i == DB9_MAX_PORTS)
659 return;
660
661 db9 = db9_base[i];
662 db9_base[i] = NULL;
663
664 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
665 input_unregister_device(db9->dev[i]);
666 parport_unregister_device(db9->pd);
667 kfree(db9);
668}
669
670static struct parport_driver db9_parport_driver = {
671 .name = "db9",
672 .match_port = db9_attach,
673 .detach = db9_detach,
674};
675
676static int __init db9_init(void)
677{
678 int i;
679 int have_dev = 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 return -EINVAL;
688 }
689
690 have_dev = 1;
691 }
692
693 if (!have_dev)
694 return -ENODEV;
695
696 return parport_register_driver(&db9_parport_driver);
697}
698
699static void __exit db9_exit(void)
700{
701 parport_unregister_driver(&db9_parport_driver);
702}
703
704module_init(db9_init);
705module_exit(db9_exit);