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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / input / joystick / db9.c
blob434d265fa2e831b3490d1ddd302081713d88848d
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 /*
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/delay.h>
19 #include <linux/init.h>
20 #include <linux/parport.h>
21 #include <linux/input.h>
22 #include <linux/mutex.h>
23 #include <linux/slab.h>
24
25 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
26 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
27 MODULE_LICENSE("GPL");
28
29 struct db9_config {
30 int args[2];
31 unsigned int nargs;
32 };
33
34 #define DB9_MAX_PORTS 3
35 static struct db9_config db9_cfg[DB9_MAX_PORTS];
36
37 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
38 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
39 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
40 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
41 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
42 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
43
44 #define DB9_ARG_PARPORT 0
45 #define DB9_ARG_MODE 1
46
47 #define DB9_MULTI_STICK 0x01
48 #define DB9_MULTI2_STICK 0x02
49 #define DB9_GENESIS_PAD 0x03
50 #define DB9_GENESIS5_PAD 0x05
51 #define DB9_GENESIS6_PAD 0x06
52 #define DB9_SATURN_PAD 0x07
53 #define DB9_MULTI_0802 0x08
54 #define DB9_MULTI_0802_2 0x09
55 #define DB9_CD32_PAD 0x0A
56 #define DB9_SATURN_DPP 0x0B
57 #define DB9_SATURN_DPP_2 0x0C
58 #define DB9_MAX_PAD 0x0D
59
60 #define DB9_UP 0x01
61 #define DB9_DOWN 0x02
62 #define DB9_LEFT 0x04
63 #define DB9_RIGHT 0x08
64 #define DB9_FIRE1 0x10
65 #define DB9_FIRE2 0x20
66 #define DB9_FIRE3 0x40
67 #define DB9_FIRE4 0x80
68
69 #define DB9_NORMAL 0x0a
70 #define DB9_NOSELECT 0x08
71
72 #define DB9_GENESIS6_DELAY 14
73 #define DB9_REFRESH_TIME HZ/100
74
75 #define DB9_MAX_DEVICES 2
76
77 struct db9_mode_data {
78 const char *name;
79 const short *buttons;
80 int n_buttons;
81 int n_pads;
82 int n_axis;
83 int bidirectional;
84 int reverse;
85 };
86
87 struct db9 {
88 struct input_dev *dev[DB9_MAX_DEVICES];
89 struct timer_list timer;
90 struct pardevice *pd;
91 int mode;
92 int used;
93 int parportno;
94 struct mutex mutex;
95 char phys[DB9_MAX_DEVICES][32];
96 };
97
98 static struct db9 *db9_base[3];
99
100 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
101 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
102 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
103 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 };
104
105 static const struct db9_mode_data db9_modes[] = {
106 { NULL, NULL, 0, 0, 0, 0, 0 },
107 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
108 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
109 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
110 { NULL, NULL, 0, 0, 0, 0, 0 },
111 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
112 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
113 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
114 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
115 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
116 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
117 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
118 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
119 };
120
121 /*
122 * Saturn controllers
123 */
124 #define DB9_SATURN_DELAY 300
125 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
126 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
127
128 /*
129 * db9_saturn_write_sub() writes 2 bit data.
130 */
131 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
132 {
133 unsigned char c;
134
135 switch (type) {
136 case 1: /* DPP1 */
137 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
138 parport_write_data(port, c);
139 break;
140 case 2: /* DPP2 */
141 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
142 parport_write_data(port, c);
143 break;
144 case 0: /* DB9 */
145 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
146 parport_write_control(port, c);
147 break;
148 }
149 }
150
151 /*
152 * gc_saturn_read_sub() reads 4 bit data.
153 */
154 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
155 {
156 unsigned char data;
157
158 if (type) {
159 /* DPP */
160 data = parport_read_status(port) ^ 0x80;
161 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
162 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
163 } else {
164 /* DB9 */
165 data = parport_read_data(port) & 0x0f;
166 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
167 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
168 }
169 }
170
171 /*
172 * db9_saturn_read_analog() sends clock and reads 8 bit data.
173 */
174 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
175 {
176 unsigned char data;
177
178 db9_saturn_write_sub(port, type, 0, powered, 0);
179 udelay(DB9_SATURN_DELAY);
180 data = db9_saturn_read_sub(port, type) << 4;
181 db9_saturn_write_sub(port, type, 2, powered, 0);
182 udelay(DB9_SATURN_DELAY);
183 data |= db9_saturn_read_sub(port, type);
184 return data;
185 }
186
187 /*
188 * db9_saturn_read_packet() reads whole saturn packet at connector
189 * and returns device identifier code.
190 */
191 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
192 {
193 int i, j;
194 unsigned char tmp;
195
196 db9_saturn_write_sub(port, type, 3, powered, 0);
197 data[0] = db9_saturn_read_sub(port, type);
198 switch (data[0] & 0x0f) {
199 case 0xf:
200 /* 1111 no pad */
201 return data[0] = 0xff;
202 case 0x4: case 0x4 | 0x8:
203 /* ?100 : digital controller */
204 db9_saturn_write_sub(port, type, 0, powered, 1);
205 data[2] = db9_saturn_read_sub(port, type) << 4;
206 db9_saturn_write_sub(port, type, 2, powered, 1);
207 data[1] = db9_saturn_read_sub(port, type) << 4;
208 db9_saturn_write_sub(port, type, 1, powered, 1);
209 data[1] |= db9_saturn_read_sub(port, type);
210 db9_saturn_write_sub(port, type, 3, powered, 1);
211 /* data[2] |= db9_saturn_read_sub(port, type); */
212 data[2] |= data[0];
213 return data[0] = 0x02;
214 case 0x1:
215 /* 0001 : analog controller or multitap */
216 db9_saturn_write_sub(port, type, 2, powered, 0);
217 udelay(DB9_SATURN_DELAY);
218 data[0] = db9_saturn_read_analog(port, type, powered);
219 if (data[0] != 0x41) {
220 /* read analog controller */
221 for (i = 0; i < (data[0] & 0x0f); i++)
222 data[i + 1] = db9_saturn_read_analog(port, type, powered);
223 db9_saturn_write_sub(port, type, 3, powered, 0);
224 return data[0];
225 } else {
226 /* read multitap */
227 if (db9_saturn_read_analog(port, type, powered) != 0x60)
228 return data[0] = 0xff;
229 for (i = 0; i < 60; i += 10) {
230 data[i] = db9_saturn_read_analog(port, type, powered);
231 if (data[i] != 0xff)
232 /* read each pad */
233 for (j = 0; j < (data[i] & 0x0f); j++)
234 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
235 }
236 db9_saturn_write_sub(port, type, 3, powered, 0);
237 return 0x41;
238 }
239 case 0x0:
240 /* 0000 : mouse */
241 db9_saturn_write_sub(port, type, 2, powered, 0);
242 udelay(DB9_SATURN_DELAY);
243 tmp = db9_saturn_read_analog(port, type, powered);
244 if (tmp == 0xff) {
245 for (i = 0; i < 3; i++)
246 data[i + 1] = db9_saturn_read_analog(port, type, powered);
247 db9_saturn_write_sub(port, type, 3, powered, 0);
248 return data[0] = 0xe3;
249 }
250 fallthrough;
251 default:
252 return data[0];
253 }
254 }
255
256 /*
257 * db9_saturn_report() analyzes packet and reports.
258 */
259 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
260 {
261 struct input_dev *dev;
262 int tmp, i, j;
263
264 tmp = (id == 0x41) ? 60 : 10;
265 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
266 dev = devs[n];
267 switch (data[j]) {
268 case 0x16: /* multi controller (analog 4 axis) */
269 input_report_abs(dev, db9_abs[5], data[j + 6]);
270 fallthrough;
271 case 0x15: /* mission stick (analog 3 axis) */
272 input_report_abs(dev, db9_abs[3], data[j + 4]);
273 input_report_abs(dev, db9_abs[4], data[j + 5]);
274 fallthrough;
275 case 0x13: /* racing controller (analog 1 axis) */
276 input_report_abs(dev, db9_abs[2], data[j + 3]);
277 fallthrough;
278 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
279 case 0x02: /* digital pad (digital 2 axis + buttons) */
280 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
281 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
282 for (i = 0; i < 9; i++)
283 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
284 break;
285 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
286 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
287 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
288 for (i = 0; i < 9; i++)
289 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
290 input_report_abs(dev, db9_abs[2], data[j + 3]);
291 input_report_abs(dev, db9_abs[3], data[j + 4]);
292 input_report_abs(dev, db9_abs[4], data[j + 5]);
293 /*
294 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
295 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
296 */
297 input_report_abs(dev, db9_abs[6], data[j + 7]);
298 input_report_abs(dev, db9_abs[7], data[j + 8]);
299 input_report_abs(dev, db9_abs[5], data[j + 9]);
300 break;
301 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
302 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
303 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
304 break;
305 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
306 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
307 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
308 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
309 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
310 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
311 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
312 break;
313 case 0xff:
314 default: /* no pad */
315 input_report_abs(dev, db9_abs[0], 0);
316 input_report_abs(dev, db9_abs[1], 0);
317 for (i = 0; i < 9; i++)
318 input_report_key(dev, db9_cd32_btn[i], 0);
319 break;
320 }
321 }
322 return n;
323 }
324
325 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
326 {
327 unsigned char id, data[60];
328 int type, n, max_pads;
329 int tmp, i;
330
331 switch (mode) {
332 case DB9_SATURN_PAD:
333 type = 0;
334 n = 1;
335 break;
336 case DB9_SATURN_DPP:
337 type = 1;
338 n = 1;
339 break;
340 case DB9_SATURN_DPP_2:
341 type = 1;
342 n = 2;
343 break;
344 default:
345 return -1;
346 }
347 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
348 for (tmp = 0, i = 0; i < n; i++) {
349 id = db9_saturn_read_packet(port, data, type + i, 1);
350 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
351 }
352 return 0;
353 }
354
355 static void db9_timer(struct timer_list *t)
356 {
357 struct db9 *db9 = from_timer(db9, t, timer);
358 struct parport *port = db9->pd->port;
359 struct input_dev *dev = db9->dev[0];
360 struct input_dev *dev2 = db9->dev[1];
361 int data, i;
362
363 switch (db9->mode) {
364 case DB9_MULTI_0802_2:
365
366 data = parport_read_data(port) >> 3;
367
368 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
369 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
370 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
371 fallthrough;
372
373 case DB9_MULTI_0802:
374
375 data = parport_read_status(port) >> 3;
376
377 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
378 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
379 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
380 break;
381
382 case DB9_MULTI_STICK:
383
384 data = parport_read_data(port);
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_MULTI2_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 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
399 break;
400
401 case DB9_GENESIS_PAD:
402
403 parport_write_control(port, DB9_NOSELECT);
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_B, ~data & DB9_FIRE1);
409 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
410
411 parport_write_control(port, DB9_NORMAL);
412 data = parport_read_data(port);
413
414 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
415 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
416 break;
417
418 case DB9_GENESIS5_PAD:
419
420 parport_write_control(port, DB9_NOSELECT);
421 data = parport_read_data(port);
422
423 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
424 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
425 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
426 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
427
428 parport_write_control(port, DB9_NORMAL);
429 data = parport_read_data(port);
430
431 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
432 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
433 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
434 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
435 break;
436
437 case DB9_GENESIS6_PAD:
438
439 parport_write_control(port, DB9_NOSELECT); /* 1 */
440 udelay(DB9_GENESIS6_DELAY);
441 data = parport_read_data(port);
442
443 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
444 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
445 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
446 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
447
448 parport_write_control(port, DB9_NORMAL);
449 udelay(DB9_GENESIS6_DELAY);
450 data = parport_read_data(port);
451
452 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
453 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
454
455 parport_write_control(port, DB9_NOSELECT); /* 2 */
456 udelay(DB9_GENESIS6_DELAY);
457 parport_write_control(port, DB9_NORMAL);
458 udelay(DB9_GENESIS6_DELAY);
459 parport_write_control(port, DB9_NOSELECT); /* 3 */
460 udelay(DB9_GENESIS6_DELAY);
461 data=parport_read_data(port);
462
463 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
464 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
465 input_report_key(dev, BTN_Z, ~data & DB9_UP);
466 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
467
468 parport_write_control(port, DB9_NORMAL);
469 udelay(DB9_GENESIS6_DELAY);
470 parport_write_control(port, DB9_NOSELECT); /* 4 */
471 udelay(DB9_GENESIS6_DELAY);
472 parport_write_control(port, DB9_NORMAL);
473 break;
474
475 case DB9_SATURN_PAD:
476 case DB9_SATURN_DPP:
477 case DB9_SATURN_DPP_2:
478
479 db9_saturn(db9->mode, port, db9->dev);
480 break;
481
482 case DB9_CD32_PAD:
483
484 data = parport_read_data(port);
485
486 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
487 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
488
489 parport_write_control(port, 0x0a);
490
491 for (i = 0; i < 7; i++) {
492 data = parport_read_data(port);
493 parport_write_control(port, 0x02);
494 parport_write_control(port, 0x0a);
495 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
496 }
497
498 parport_write_control(port, 0x00);
499 break;
500 }
501
502 input_sync(dev);
503
504 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
505 }
506
507 static int db9_open(struct input_dev *dev)
508 {
509 struct db9 *db9 = input_get_drvdata(dev);
510 struct parport *port = db9->pd->port;
511 int err;
512
513 err = mutex_lock_interruptible(&db9->mutex);
514 if (err)
515 return err;
516
517 if (!db9->used++) {
518 parport_claim(db9->pd);
519 parport_write_data(port, 0xff);
520 if (db9_modes[db9->mode].reverse) {
521 parport_data_reverse(port);
522 parport_write_control(port, DB9_NORMAL);
523 }
524 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
525 }
526
527 mutex_unlock(&db9->mutex);
528 return 0;
529 }
530
531 static void db9_close(struct input_dev *dev)
532 {
533 struct db9 *db9 = input_get_drvdata(dev);
534 struct parport *port = db9->pd->port;
535
536 mutex_lock(&db9->mutex);
537 if (!--db9->used) {
538 del_timer_sync(&db9->timer);
539 parport_write_control(port, 0x00);
540 parport_data_forward(port);
541 parport_release(db9->pd);
542 }
543 mutex_unlock(&db9->mutex);
544 }
545
546 static void db9_attach(struct parport *pp)
547 {
548 struct db9 *db9;
549 const struct db9_mode_data *db9_mode;
550 struct pardevice *pd;
551 struct input_dev *input_dev;
552 int i, j, port_idx;
553 int mode;
554 struct pardev_cb db9_parport_cb;
555
556 for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) {
557 if (db9_cfg[port_idx].nargs == 0 ||
558 db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0)
559 continue;
560
561 if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number)
562 break;
563 }
564
565 if (port_idx == DB9_MAX_PORTS) {
566 pr_debug("Not using parport%d.\n", pp->number);
567 return;
568 }
569
570 mode = db9_cfg[port_idx].args[DB9_ARG_MODE];
571
572 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
573 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
574 return;
575 }
576
577 db9_mode = &db9_modes[mode];
578
579 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
580 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
581 return;
582 }
583
584 memset(&db9_parport_cb, 0, sizeof(db9_parport_cb));
585 db9_parport_cb.flags = PARPORT_FLAG_EXCL;
586
587 pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx);
588 if (!pd) {
589 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
590 return;
591 }
592
593 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
594 if (!db9)
595 goto err_unreg_pardev;
596
597 mutex_init(&db9->mutex);
598 db9->pd = pd;
599 db9->mode = mode;
600 db9->parportno = pp->number;
601 timer_setup(&db9->timer, db9_timer, 0);
602
603 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
604
605 db9->dev[i] = input_dev = input_allocate_device();
606 if (!input_dev) {
607 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
608 goto err_unreg_devs;
609 }
610
611 snprintf(db9->phys[i], sizeof(db9->phys[i]),
612 "%s/input%d", db9->pd->port->name, i);
613
614 input_dev->name = db9_mode->name;
615 input_dev->phys = db9->phys[i];
616 input_dev->id.bustype = BUS_PARPORT;
617 input_dev->id.vendor = 0x0002;
618 input_dev->id.product = mode;
619 input_dev->id.version = 0x0100;
620
621 input_set_drvdata(input_dev, db9);
622
623 input_dev->open = db9_open;
624 input_dev->close = db9_close;
625
626 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
627 for (j = 0; j < db9_mode->n_buttons; j++)
628 set_bit(db9_mode->buttons[j], input_dev->keybit);
629 for (j = 0; j < db9_mode->n_axis; j++) {
630 if (j < 2)
631 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
632 else
633 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
634 }
635
636 if (input_register_device(input_dev))
637 goto err_free_dev;
638 }
639
640 db9_base[port_idx] = db9;
641 return;
642
643 err_free_dev:
644 input_free_device(db9->dev[i]);
645 err_unreg_devs:
646 while (--i >= 0)
647 input_unregister_device(db9->dev[i]);
648 kfree(db9);
649 err_unreg_pardev:
650 parport_unregister_device(pd);
651 }
652
653 static void db9_detach(struct parport *port)
654 {
655 int i;
656 struct db9 *db9;
657
658 for (i = 0; i < DB9_MAX_PORTS; i++) {
659 if (db9_base[i] && db9_base[i]->parportno == port->number)
660 break;
661 }
662
663 if (i == DB9_MAX_PORTS)
664 return;
665
666 db9 = db9_base[i];
667 db9_base[i] = NULL;
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 struct parport_driver db9_parport_driver = {
676 .name = "db9",
677 .match_port = db9_attach,
678 .detach = db9_detach,
679 .devmodel = true,
680 };
681
682 static int __init db9_init(void)
683 {
684 int i;
685 int have_dev = 0;
686
687 for (i = 0; i < DB9_MAX_PORTS; i++) {
688 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
689 continue;
690
691 if (db9_cfg[i].nargs < 2) {
692 printk(KERN_ERR "db9.c: Device type must be specified.\n");
693 return -EINVAL;
694 }
695
696 have_dev = 1;
697 }
698
699 if (!have_dev)
700 return -ENODEV;
701
702 return parport_register_driver(&db9_parport_driver);
703 }
704
705 static void __exit db9_exit(void)
706 {
707 parport_unregister_driver(&db9_parport_driver);
708 }
709
710 module_init(db9_init);
711 module_exit(db9_exit);
Linux with added FPC-III support