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x86: arch/x86/mm/init_32.c cleanup
[wrt350n-kernel.git] / drivers / input / joystick / db9.c
bloba6ca9d5e252f089f9118efd6f0d01693920b4973
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/moduleparam.h>
37 #include <linux/delay.h>
38 #include <linux/init.h>
39 #include <linux/parport.h>
40 #include <linux/input.h>
41 #include <linux/mutex.h>
42
43 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
44 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
45 MODULE_LICENSE("GPL");
46
47 struct db9_config {
48 int args[2];
49 unsigned int nargs;
50 };
51
52 #define DB9_MAX_PORTS 3
53 static struct db9_config db9_cfg[DB9_MAX_PORTS] __initdata;
54
55 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
56 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
57 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
58 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
59 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
60 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
61
62 #define DB9_ARG_PARPORT 0
63 #define DB9_ARG_MODE 1
64
65 #define DB9_MULTI_STICK 0x01
66 #define DB9_MULTI2_STICK 0x02
67 #define DB9_GENESIS_PAD 0x03
68 #define DB9_GENESIS5_PAD 0x05
69 #define DB9_GENESIS6_PAD 0x06
70 #define DB9_SATURN_PAD 0x07
71 #define DB9_MULTI_0802 0x08
72 #define DB9_MULTI_0802_2 0x09
73 #define DB9_CD32_PAD 0x0A
74 #define DB9_SATURN_DPP 0x0B
75 #define DB9_SATURN_DPP_2 0x0C
76 #define DB9_MAX_PAD 0x0D
77
78 #define DB9_UP 0x01
79 #define DB9_DOWN 0x02
80 #define DB9_LEFT 0x04
81 #define DB9_RIGHT 0x08
82 #define DB9_FIRE1 0x10
83 #define DB9_FIRE2 0x20
84 #define DB9_FIRE3 0x40
85 #define DB9_FIRE4 0x80
86
87 #define DB9_NORMAL 0x0a
88 #define DB9_NOSELECT 0x08
89
90 #define DB9_GENESIS6_DELAY 14
91 #define DB9_REFRESH_TIME HZ/100
92
93 #define DB9_MAX_DEVICES 2
94
95 struct db9_mode_data {
96 const char *name;
97 const short *buttons;
98 int n_buttons;
99 int n_pads;
100 int n_axis;
101 int bidirectional;
102 int reverse;
103 };
104
105 struct db9 {
106 struct input_dev *dev[DB9_MAX_DEVICES];
107 struct timer_list timer;
108 struct pardevice *pd;
109 int mode;
110 int used;
111 struct mutex mutex;
112 char phys[DB9_MAX_DEVICES][32];
113 };
114
115 static struct db9 *db9_base[3];
116
117 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
118 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
119 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
120 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 };
121
122 static const struct db9_mode_data db9_modes[] = {
123 { NULL, NULL, 0, 0, 0, 0, 0 },
124 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
125 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
126 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
127 { NULL, NULL, 0, 0, 0, 0, 0 },
128 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
129 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
130 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
131 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
132 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
133 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
134 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
135 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
136 };
137
138 /*
139 * Saturn controllers
140 */
141 #define DB9_SATURN_DELAY 300
142 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
143 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
144
145 /*
146 * db9_saturn_write_sub() writes 2 bit data.
147 */
148 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
149 {
150 unsigned char c;
151
152 switch (type) {
153 case 1: /* DPP1 */
154 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
155 parport_write_data(port, c);
156 break;
157 case 2: /* DPP2 */
158 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
159 parport_write_data(port, c);
160 break;
161 case 0: /* DB9 */
162 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
163 parport_write_control(port, c);
164 break;
165 }
166 }
167
168 /*
169 * gc_saturn_read_sub() reads 4 bit data.
170 */
171 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
172 {
173 unsigned char data;
174
175 if (type) {
176 /* DPP */
177 data = parport_read_status(port) ^ 0x80;
178 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
179 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
180 } else {
181 /* DB9 */
182 data = parport_read_data(port) & 0x0f;
183 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
184 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
185 }
186 }
187
188 /*
189 * db9_saturn_read_analog() sends clock and reads 8 bit data.
190 */
191 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
192 {
193 unsigned char data;
194
195 db9_saturn_write_sub(port, type, 0, powered, 0);
196 udelay(DB9_SATURN_DELAY);
197 data = db9_saturn_read_sub(port, type) << 4;
198 db9_saturn_write_sub(port, type, 2, powered, 0);
199 udelay(DB9_SATURN_DELAY);
200 data |= db9_saturn_read_sub(port, type);
201 return data;
202 }
203
204 /*
205 * db9_saturn_read_packet() reads whole saturn packet at connector
206 * and returns device identifier code.
207 */
208 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
209 {
210 int i, j;
211 unsigned char tmp;
212
213 db9_saturn_write_sub(port, type, 3, powered, 0);
214 data[0] = db9_saturn_read_sub(port, type);
215 switch (data[0] & 0x0f) {
216 case 0xf:
217 /* 1111 no pad */
218 return data[0] = 0xff;
219 case 0x4: case 0x4 | 0x8:
220 /* ?100 : digital controller */
221 db9_saturn_write_sub(port, type, 0, powered, 1);
222 data[2] = db9_saturn_read_sub(port, type) << 4;
223 db9_saturn_write_sub(port, type, 2, powered, 1);
224 data[1] = db9_saturn_read_sub(port, type) << 4;
225 db9_saturn_write_sub(port, type, 1, powered, 1);
226 data[1] |= db9_saturn_read_sub(port, type);
227 db9_saturn_write_sub(port, type, 3, powered, 1);
228 /* data[2] |= db9_saturn_read_sub(port, type); */
229 data[2] |= data[0];
230 return data[0] = 0x02;
231 case 0x1:
232 /* 0001 : analog controller or multitap */
233 db9_saturn_write_sub(port, type, 2, powered, 0);
234 udelay(DB9_SATURN_DELAY);
235 data[0] = db9_saturn_read_analog(port, type, powered);
236 if (data[0] != 0x41) {
237 /* read analog controller */
238 for (i = 0; i < (data[0] & 0x0f); i++)
239 data[i + 1] = db9_saturn_read_analog(port, type, powered);
240 db9_saturn_write_sub(port, type, 3, powered, 0);
241 return data[0];
242 } else {
243 /* read multitap */
244 if (db9_saturn_read_analog(port, type, powered) != 0x60)
245 return data[0] = 0xff;
246 for (i = 0; i < 60; i += 10) {
247 data[i] = db9_saturn_read_analog(port, type, powered);
248 if (data[i] != 0xff)
249 /* read each pad */
250 for (j = 0; j < (data[i] & 0x0f); j++)
251 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
252 }
253 db9_saturn_write_sub(port, type, 3, powered, 0);
254 return 0x41;
255 }
256 case 0x0:
257 /* 0000 : mouse */
258 db9_saturn_write_sub(port, type, 2, powered, 0);
259 udelay(DB9_SATURN_DELAY);
260 tmp = db9_saturn_read_analog(port, type, powered);
261 if (tmp == 0xff) {
262 for (i = 0; i < 3; i++)
263 data[i + 1] = db9_saturn_read_analog(port, type, powered);
264 db9_saturn_write_sub(port, type, 3, powered, 0);
265 return data[0] = 0xe3;
266 }
267 default:
268 return data[0];
269 }
270 }
271
272 /*
273 * db9_saturn_report() analyzes packet and reports.
274 */
275 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
276 {
277 struct input_dev *dev;
278 int tmp, i, j;
279
280 tmp = (id == 0x41) ? 60 : 10;
281 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
282 dev = devs[n];
283 switch (data[j]) {
284 case 0x16: /* multi controller (analog 4 axis) */
285 input_report_abs(dev, db9_abs[5], data[j + 6]);
286 case 0x15: /* mission stick (analog 3 axis) */
287 input_report_abs(dev, db9_abs[3], data[j + 4]);
288 input_report_abs(dev, db9_abs[4], data[j + 5]);
289 case 0x13: /* racing controller (analog 1 axis) */
290 input_report_abs(dev, db9_abs[2], data[j + 3]);
291 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
292 case 0x02: /* digital pad (digital 2 axis + buttons) */
293 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
294 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
295 for (i = 0; i < 9; i++)
296 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
297 break;
298 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
299 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
300 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
301 for (i = 0; i < 9; i++)
302 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
303 input_report_abs(dev, db9_abs[2], data[j + 3]);
304 input_report_abs(dev, db9_abs[3], data[j + 4]);
305 input_report_abs(dev, db9_abs[4], data[j + 5]);
306 /*
307 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
308 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
309 */
310 input_report_abs(dev, db9_abs[6], data[j + 7]);
311 input_report_abs(dev, db9_abs[7], data[j + 8]);
312 input_report_abs(dev, db9_abs[5], data[j + 9]);
313 break;
314 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
315 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
316 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
317 break;
318 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
319 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
320 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
321 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
322 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
323 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
324 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
325 break;
326 case 0xff:
327 default: /* no pad */
328 input_report_abs(dev, db9_abs[0], 0);
329 input_report_abs(dev, db9_abs[1], 0);
330 for (i = 0; i < 9; i++)
331 input_report_key(dev, db9_cd32_btn[i], 0);
332 break;
333 }
334 }
335 return n;
336 }
337
338 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
339 {
340 unsigned char id, data[60];
341 int type, n, max_pads;
342 int tmp, i;
343
344 switch (mode) {
345 case DB9_SATURN_PAD:
346 type = 0;
347 n = 1;
348 break;
349 case DB9_SATURN_DPP:
350 type = 1;
351 n = 1;
352 break;
353 case DB9_SATURN_DPP_2:
354 type = 1;
355 n = 2;
356 break;
357 default:
358 return -1;
359 }
360 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
361 for (tmp = 0, i = 0; i < n; i++) {
362 id = db9_saturn_read_packet(port, data, type + i, 1);
363 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
364 }
365 return 0;
366 }
367
368 static void db9_timer(unsigned long private)
369 {
370 struct db9 *db9 = (void *) private;
371 struct parport *port = db9->pd->port;
372 struct input_dev *dev = db9->dev[0];
373 struct input_dev *dev2 = db9->dev[1];
374 int data, i;
375
376 switch (db9->mode) {
377 case DB9_MULTI_0802_2:
378
379 data = parport_read_data(port) >> 3;
380
381 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
382 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
383 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
384
385 case DB9_MULTI_0802:
386
387 data = parport_read_status(port) >> 3;
388
389 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
390 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
391 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
392 break;
393
394 case DB9_MULTI_STICK:
395
396 data = parport_read_data(port);
397
398 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
399 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
400 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
401 break;
402
403 case DB9_MULTI2_STICK:
404
405 data = parport_read_data(port);
406
407 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
408 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
409 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
410 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
411 break;
412
413 case DB9_GENESIS_PAD:
414
415 parport_write_control(port, DB9_NOSELECT);
416 data = parport_read_data(port);
417
418 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
419 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
420 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
421 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
422
423 parport_write_control(port, DB9_NORMAL);
424 data = parport_read_data(port);
425
426 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
427 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
428 break;
429
430 case DB9_GENESIS5_PAD:
431
432 parport_write_control(port, DB9_NOSELECT);
433 data = parport_read_data(port);
434
435 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
436 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
437 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
438 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
439
440 parport_write_control(port, DB9_NORMAL);
441 data = parport_read_data(port);
442
443 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
444 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
445 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
446 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
447 break;
448
449 case DB9_GENESIS6_PAD:
450
451 parport_write_control(port, DB9_NOSELECT); /* 1 */
452 udelay(DB9_GENESIS6_DELAY);
453 data = parport_read_data(port);
454
455 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
456 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
457 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
458 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
459
460 parport_write_control(port, DB9_NORMAL);
461 udelay(DB9_GENESIS6_DELAY);
462 data = parport_read_data(port);
463
464 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
465 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
466
467 parport_write_control(port, DB9_NOSELECT); /* 2 */
468 udelay(DB9_GENESIS6_DELAY);
469 parport_write_control(port, DB9_NORMAL);
470 udelay(DB9_GENESIS6_DELAY);
471 parport_write_control(port, DB9_NOSELECT); /* 3 */
472 udelay(DB9_GENESIS6_DELAY);
473 data=parport_read_data(port);
474
475 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
476 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
477 input_report_key(dev, BTN_Z, ~data & DB9_UP);
478 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
479
480 parport_write_control(port, DB9_NORMAL);
481 udelay(DB9_GENESIS6_DELAY);
482 parport_write_control(port, DB9_NOSELECT); /* 4 */
483 udelay(DB9_GENESIS6_DELAY);
484 parport_write_control(port, DB9_NORMAL);
485 break;
486
487 case DB9_SATURN_PAD:
488 case DB9_SATURN_DPP:
489 case DB9_SATURN_DPP_2:
490
491 db9_saturn(db9->mode, port, db9->dev);
492 break;
493
494 case DB9_CD32_PAD:
495
496 data = parport_read_data(port);
497
498 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
499 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
500
501 parport_write_control(port, 0x0a);
502
503 for (i = 0; i < 7; i++) {
504 data = parport_read_data(port);
505 parport_write_control(port, 0x02);
506 parport_write_control(port, 0x0a);
507 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
508 }
509
510 parport_write_control(port, 0x00);
511 break;
512 }
513
514 input_sync(dev);
515
516 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
517 }
518
519 static int db9_open(struct input_dev *dev)
520 {
521 struct db9 *db9 = input_get_drvdata(dev);
522 struct parport *port = db9->pd->port;
523 int err;
524
525 err = mutex_lock_interruptible(&db9->mutex);
526 if (err)
527 return err;
528
529 if (!db9->used++) {
530 parport_claim(db9->pd);
531 parport_write_data(port, 0xff);
532 if (db9_modes[db9->mode].reverse) {
533 parport_data_reverse(port);
534 parport_write_control(port, DB9_NORMAL);
535 }
536 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
537 }
538
539 mutex_unlock(&db9->mutex);
540 return 0;
541 }
542
543 static void db9_close(struct input_dev *dev)
544 {
545 struct db9 *db9 = input_get_drvdata(dev);
546 struct parport *port = db9->pd->port;
547
548 mutex_lock(&db9->mutex);
549 if (!--db9->used) {
550 del_timer_sync(&db9->timer);
551 parport_write_control(port, 0x00);
552 parport_data_forward(port);
553 parport_release(db9->pd);
554 }
555 mutex_unlock(&db9->mutex);
556 }
557
558 static struct db9 __init *db9_probe(int parport, int mode)
559 {
560 struct db9 *db9;
561 const struct db9_mode_data *db9_mode;
562 struct parport *pp;
563 struct pardevice *pd;
564 struct input_dev *input_dev;
565 int i, j;
566 int err;
567
568 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
569 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
570 err = -EINVAL;
571 goto err_out;
572 }
573
574 db9_mode = &db9_modes[mode];
575
576 pp = parport_find_number(parport);
577 if (!pp) {
578 printk(KERN_ERR "db9.c: no such parport\n");
579 err = -ENODEV;
580 goto err_out;
581 }
582
583 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
584 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
585 err = -EINVAL;
586 goto err_put_pp;
587 }
588
589 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
590 if (!pd) {
591 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
592 err = -EBUSY;
593 goto err_put_pp;
594 }
595
596 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
597 if (!db9) {
598 printk(KERN_ERR "db9.c: Not enough memory\n");
599 err = -ENOMEM;
600 goto err_unreg_pardev;
601 }
602
603 mutex_init(&db9->mutex);
604 db9->pd = pd;
605 db9->mode = mode;
606 init_timer(&db9->timer);
607 db9->timer.data = (long) db9;
608 db9->timer.function = db9_timer;
609
610 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
611
612 db9->dev[i] = input_dev = input_allocate_device();
613 if (!input_dev) {
614 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
615 err = -ENOMEM;
616 goto err_unreg_devs;
617 }
618
619 snprintf(db9->phys[i], sizeof(db9->phys[i]),
620 "%s/input%d", db9->pd->port->name, i);
621
622 input_dev->name = db9_mode->name;
623 input_dev->phys = db9->phys[i];
624 input_dev->id.bustype = BUS_PARPORT;
625 input_dev->id.vendor = 0x0002;
626 input_dev->id.product = mode;
627 input_dev->id.version = 0x0100;
628
629 input_set_drvdata(input_dev, db9);
630
631 input_dev->open = db9_open;
632 input_dev->close = db9_close;
633
634 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
635 for (j = 0; j < db9_mode->n_buttons; j++)
636 set_bit(db9_mode->buttons[j], input_dev->keybit);
637 for (j = 0; j < db9_mode->n_axis; j++) {
638 if (j < 2)
639 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
640 else
641 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
642 }
643
644 err = input_register_device(input_dev);
645 if (err)
646 goto err_free_dev;
647 }
648
649 parport_put_port(pp);
650 return db9;
651
652 err_free_dev:
653 input_free_device(db9->dev[i]);
654 err_unreg_devs:
655 while (--i >= 0)
656 input_unregister_device(db9->dev[i]);
657 kfree(db9);
658 err_unreg_pardev:
659 parport_unregister_device(pd);
660 err_put_pp:
661 parport_put_port(pp);
662 err_out:
663 return ERR_PTR(err);
664 }
665
666 static void db9_remove(struct db9 *db9)
667 {
668 int i;
669
670 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
671 input_unregister_device(db9->dev[i]);
672 parport_unregister_device(db9->pd);
673 kfree(db9);
674 }
675
676 static int __init db9_init(void)
677 {
678 int i;
679 int have_dev = 0;
680 int err = 0;
681
682 for (i = 0; i < DB9_MAX_PORTS; i++) {
683 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
684 continue;
685
686 if (db9_cfg[i].nargs < 2) {
687 printk(KERN_ERR "db9.c: Device type must be specified.\n");
688 err = -EINVAL;
689 break;
690 }
691
692 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT],
693 db9_cfg[i].args[DB9_ARG_MODE]);
694 if (IS_ERR(db9_base[i])) {
695 err = PTR_ERR(db9_base[i]);
696 break;
697 }
698
699 have_dev = 1;
700 }
701
702 if (err) {
703 while (--i >= 0)
704 if (db9_base[i])
705 db9_remove(db9_base[i]);
706 return err;
707 }
708
709 return have_dev ? 0 : -ENODEV;
710 }
711
712 static void __exit db9_exit(void)
713 {
714 int i;
715
716 for (i = 0; i < DB9_MAX_PORTS; i++)
717 if (db9_base[i])
718 db9_remove(db9_base[i]);
719 }
720
721 module_init(db9_init);
722 module_exit(db9_exit);
WRT350N Kernel Patches