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[ALSA] Add model entry for Samsung X10 laptop
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / input / joystick / db9.c
blob5080e15c6d30c6dca5a1f40fc28c419843cbdf3b
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 int nargs;
50 };
51
52 #define DB9_MAX_PORTS 3
53 static struct db9_config db9[DB9_MAX_PORTS] __initdata;
54
55 module_param_array_named(dev, db9[0].args, int, &db9[0].nargs, 0);
56 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
57 module_param_array_named(dev2, db9[1].args, int, &db9[0].nargs, 0);
58 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
59 module_param_array_named(dev3, db9[2].args, int, &db9[2].nargs, 0);
60 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
61
62 __obsolete_setup("db9=");
63 __obsolete_setup("db9_2=");
64 __obsolete_setup("db9_3=");
65
66 #define DB9_ARG_PARPORT 0
67 #define DB9_ARG_MODE 1
68
69 #define DB9_MULTI_STICK 0x01
70 #define DB9_MULTI2_STICK 0x02
71 #define DB9_GENESIS_PAD 0x03
72 #define DB9_GENESIS5_PAD 0x05
73 #define DB9_GENESIS6_PAD 0x06
74 #define DB9_SATURN_PAD 0x07
75 #define DB9_MULTI_0802 0x08
76 #define DB9_MULTI_0802_2 0x09
77 #define DB9_CD32_PAD 0x0A
78 #define DB9_SATURN_DPP 0x0B
79 #define DB9_SATURN_DPP_2 0x0C
80 #define DB9_MAX_PAD 0x0D
81
82 #define DB9_UP 0x01
83 #define DB9_DOWN 0x02
84 #define DB9_LEFT 0x04
85 #define DB9_RIGHT 0x08
86 #define DB9_FIRE1 0x10
87 #define DB9_FIRE2 0x20
88 #define DB9_FIRE3 0x40
89 #define DB9_FIRE4 0x80
90
91 #define DB9_NORMAL 0x0a
92 #define DB9_NOSELECT 0x08
93
94 #define DB9_GENESIS6_DELAY 14
95 #define DB9_REFRESH_TIME HZ/100
96
97 #define DB9_MAX_DEVICES 2
98
99 struct db9_mode_data {
100 const char *name;
101 const short *buttons;
102 int n_buttons;
103 int n_pads;
104 int n_axis;
105 int bidirectional;
106 int reverse;
107 };
108
109 struct db9 {
110 struct input_dev *dev[DB9_MAX_DEVICES];
111 struct timer_list timer;
112 struct pardevice *pd;
113 int mode;
114 int used;
115 struct mutex mutex;
116 char phys[DB9_MAX_DEVICES][32];
117 };
118
119 static struct db9 *db9_base[3];
120
121 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
122 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
123 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
124 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 };
125
126 static const struct db9_mode_data db9_modes[] = {
127 { NULL, NULL, 0, 0, 0, 0, 0 },
128 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
129 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
130 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
131 { NULL, NULL, 0, 0, 0, 0, 0 },
132 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
133 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
134 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
135 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
136 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
137 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
138 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
139 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
140 };
141
142 /*
143 * Saturn controllers
144 */
145 #define DB9_SATURN_DELAY 300
146 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
147 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
148
149 /*
150 * db9_saturn_write_sub() writes 2 bit data.
151 */
152 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
153 {
154 unsigned char c;
155
156 switch (type) {
157 case 1: /* DPP1 */
158 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
159 parport_write_data(port, c);
160 break;
161 case 2: /* DPP2 */
162 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
163 parport_write_data(port, c);
164 break;
165 case 0: /* DB9 */
166 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
167 parport_write_control(port, c);
168 break;
169 }
170 }
171
172 /*
173 * gc_saturn_read_sub() reads 4 bit data.
174 */
175 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
176 {
177 unsigned char data;
178
179 if (type) {
180 /* DPP */
181 data = parport_read_status(port) ^ 0x80;
182 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
183 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
184 } else {
185 /* DB9 */
186 data = parport_read_data(port) & 0x0f;
187 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
188 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
189 }
190 }
191
192 /*
193 * db9_saturn_read_analog() sends clock and reads 8 bit data.
194 */
195 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
196 {
197 unsigned char data;
198
199 db9_saturn_write_sub(port, type, 0, powered, 0);
200 udelay(DB9_SATURN_DELAY);
201 data = db9_saturn_read_sub(port, type) << 4;
202 db9_saturn_write_sub(port, type, 2, powered, 0);
203 udelay(DB9_SATURN_DELAY);
204 data |= db9_saturn_read_sub(port, type);
205 return data;
206 }
207
208 /*
209 * db9_saturn_read_packet() reads whole saturn packet at connector
210 * and returns device identifier code.
211 */
212 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
213 {
214 int i, j;
215 unsigned char tmp;
216
217 db9_saturn_write_sub(port, type, 3, powered, 0);
218 data[0] = db9_saturn_read_sub(port, type);
219 switch (data[0] & 0x0f) {
220 case 0xf:
221 /* 1111 no pad */
222 return data[0] = 0xff;
223 case 0x4: case 0x4 | 0x8:
224 /* ?100 : digital controller */
225 db9_saturn_write_sub(port, type, 0, powered, 1);
226 data[2] = db9_saturn_read_sub(port, type) << 4;
227 db9_saturn_write_sub(port, type, 2, powered, 1);
228 data[1] = db9_saturn_read_sub(port, type) << 4;
229 db9_saturn_write_sub(port, type, 1, powered, 1);
230 data[1] |= db9_saturn_read_sub(port, type);
231 db9_saturn_write_sub(port, type, 3, powered, 1);
232 /* data[2] |= db9_saturn_read_sub(port, type); */
233 data[2] |= data[0];
234 return data[0] = 0x02;
235 case 0x1:
236 /* 0001 : analog controller or multitap */
237 db9_saturn_write_sub(port, type, 2, powered, 0);
238 udelay(DB9_SATURN_DELAY);
239 data[0] = db9_saturn_read_analog(port, type, powered);
240 if (data[0] != 0x41) {
241 /* read analog controller */
242 for (i = 0; i < (data[0] & 0x0f); 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];
246 } else {
247 /* read multitap */
248 if (db9_saturn_read_analog(port, type, powered) != 0x60)
249 return data[0] = 0xff;
250 for (i = 0; i < 60; i += 10) {
251 data[i] = db9_saturn_read_analog(port, type, powered);
252 if (data[i] != 0xff)
253 /* read each pad */
254 for (j = 0; j < (data[i] & 0x0f); j++)
255 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
256 }
257 db9_saturn_write_sub(port, type, 3, powered, 0);
258 return 0x41;
259 }
260 case 0x0:
261 /* 0000 : mouse */
262 db9_saturn_write_sub(port, type, 2, powered, 0);
263 udelay(DB9_SATURN_DELAY);
264 tmp = db9_saturn_read_analog(port, type, powered);
265 if (tmp == 0xff) {
266 for (i = 0; i < 3; i++)
267 data[i + 1] = db9_saturn_read_analog(port, type, powered);
268 db9_saturn_write_sub(port, type, 3, powered, 0);
269 return data[0] = 0xe3;
270 }
271 default:
272 return data[0];
273 }
274 }
275
276 /*
277 * db9_saturn_report() analyzes packet and reports.
278 */
279 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
280 {
281 struct input_dev *dev;
282 int tmp, i, j;
283
284 tmp = (id == 0x41) ? 60 : 10;
285 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
286 dev = devs[n];
287 switch (data[j]) {
288 case 0x16: /* multi controller (analog 4 axis) */
289 input_report_abs(dev, db9_abs[5], data[j + 6]);
290 case 0x15: /* mission stick (analog 3 axis) */
291 input_report_abs(dev, db9_abs[3], data[j + 4]);
292 input_report_abs(dev, db9_abs[4], data[j + 5]);
293 case 0x13: /* racing controller (analog 1 axis) */
294 input_report_abs(dev, db9_abs[2], data[j + 3]);
295 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
296 case 0x02: /* digital pad (digital 2 axis + buttons) */
297 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
298 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
299 for (i = 0; i < 9; i++)
300 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
301 break;
302 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
303 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
304 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
305 for (i = 0; i < 9; i++)
306 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
307 input_report_abs(dev, db9_abs[2], data[j + 3]);
308 input_report_abs(dev, db9_abs[3], data[j + 4]);
309 input_report_abs(dev, db9_abs[4], data[j + 5]);
310 /*
311 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
312 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
313 */
314 input_report_abs(dev, db9_abs[6], data[j + 7]);
315 input_report_abs(dev, db9_abs[7], data[j + 8]);
316 input_report_abs(dev, db9_abs[5], data[j + 9]);
317 break;
318 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
319 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
320 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
321 break;
322 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
323 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
324 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
325 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
326 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
327 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
328 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
329 break;
330 case 0xff:
331 default: /* no pad */
332 input_report_abs(dev, db9_abs[0], 0);
333 input_report_abs(dev, db9_abs[1], 0);
334 for (i = 0; i < 9; i++)
335 input_report_key(dev, db9_cd32_btn[i], 0);
336 break;
337 }
338 }
339 return n;
340 }
341
342 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
343 {
344 unsigned char id, data[60];
345 int type, n, max_pads;
346 int tmp, i;
347
348 switch (mode) {
349 case DB9_SATURN_PAD:
350 type = 0;
351 n = 1;
352 break;
353 case DB9_SATURN_DPP:
354 type = 1;
355 n = 1;
356 break;
357 case DB9_SATURN_DPP_2:
358 type = 1;
359 n = 2;
360 break;
361 default:
362 return -1;
363 }
364 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
365 for (tmp = 0, i = 0; i < n; i++) {
366 id = db9_saturn_read_packet(port, data, type + i, 1);
367 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
368 }
369 return 0;
370 }
371
372 static void db9_timer(unsigned long private)
373 {
374 struct db9 *db9 = (void *) private;
375 struct parport *port = db9->pd->port;
376 struct input_dev *dev = db9->dev[0];
377 struct input_dev *dev2 = db9->dev[1];
378 int data, i;
379
380 switch (db9->mode) {
381 case DB9_MULTI_0802_2:
382
383 data = parport_read_data(port) >> 3;
384
385 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
386 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
387 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
388
389 case DB9_MULTI_0802:
390
391 data = parport_read_status(port) >> 3;
392
393 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
394 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
395 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
396 break;
397
398 case DB9_MULTI_STICK:
399
400 data = parport_read_data(port);
401
402 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
403 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
404 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
405 break;
406
407 case DB9_MULTI2_STICK:
408
409 data = parport_read_data(port);
410
411 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
412 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
413 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
414 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
415 break;
416
417 case DB9_GENESIS_PAD:
418
419 parport_write_control(port, DB9_NOSELECT);
420 data = parport_read_data(port);
421
422 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
423 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
424 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
425 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
426
427 parport_write_control(port, DB9_NORMAL);
428 data = parport_read_data(port);
429
430 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
431 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
432 break;
433
434 case DB9_GENESIS5_PAD:
435
436 parport_write_control(port, DB9_NOSELECT);
437 data = parport_read_data(port);
438
439 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
440 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
441 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
442 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
443
444 parport_write_control(port, DB9_NORMAL);
445 data = parport_read_data(port);
446
447 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
448 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
449 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
450 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
451 break;
452
453 case DB9_GENESIS6_PAD:
454
455 parport_write_control(port, DB9_NOSELECT); /* 1 */
456 udelay(DB9_GENESIS6_DELAY);
457 data = parport_read_data(port);
458
459 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
460 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
461 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
462 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
463
464 parport_write_control(port, DB9_NORMAL);
465 udelay(DB9_GENESIS6_DELAY);
466 data = parport_read_data(port);
467
468 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
469 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
470
471 parport_write_control(port, DB9_NOSELECT); /* 2 */
472 udelay(DB9_GENESIS6_DELAY);
473 parport_write_control(port, DB9_NORMAL);
474 udelay(DB9_GENESIS6_DELAY);
475 parport_write_control(port, DB9_NOSELECT); /* 3 */
476 udelay(DB9_GENESIS6_DELAY);
477 data=parport_read_data(port);
478
479 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
480 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
481 input_report_key(dev, BTN_Z, ~data & DB9_UP);
482 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
483
484 parport_write_control(port, DB9_NORMAL);
485 udelay(DB9_GENESIS6_DELAY);
486 parport_write_control(port, DB9_NOSELECT); /* 4 */
487 udelay(DB9_GENESIS6_DELAY);
488 parport_write_control(port, DB9_NORMAL);
489 break;
490
491 case DB9_SATURN_PAD:
492 case DB9_SATURN_DPP:
493 case DB9_SATURN_DPP_2:
494
495 db9_saturn(db9->mode, port, db9->dev);
496 break;
497
498 case DB9_CD32_PAD:
499
500 data = parport_read_data(port);
501
502 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
503 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
504
505 parport_write_control(port, 0x0a);
506
507 for (i = 0; i < 7; i++) {
508 data = parport_read_data(port);
509 parport_write_control(port, 0x02);
510 parport_write_control(port, 0x0a);
511 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
512 }
513
514 parport_write_control(port, 0x00);
515 break;
516 }
517
518 input_sync(dev);
519
520 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
521 }
522
523 static int db9_open(struct input_dev *dev)
524 {
525 struct db9 *db9 = dev->private;
526 struct parport *port = db9->pd->port;
527 int err;
528
529 err = mutex_lock_interruptible(&db9->mutex);
530 if (err)
531 return err;
532
533 if (!db9->used++) {
534 parport_claim(db9->pd);
535 parport_write_data(port, 0xff);
536 if (db9_modes[db9->mode].reverse) {
537 parport_data_reverse(port);
538 parport_write_control(port, DB9_NORMAL);
539 }
540 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
541 }
542
543 mutex_unlock(&db9->mutex);
544 return 0;
545 }
546
547 static void db9_close(struct input_dev *dev)
548 {
549 struct db9 *db9 = dev->private;
550 struct parport *port = db9->pd->port;
551
552 mutex_lock(&db9->mutex);
553 if (!--db9->used) {
554 del_timer_sync(&db9->timer);
555 parport_write_control(port, 0x00);
556 parport_data_forward(port);
557 parport_release(db9->pd);
558 }
559 mutex_unlock(&db9->mutex);
560 }
561
562 static struct db9 __init *db9_probe(int parport, int mode)
563 {
564 struct db9 *db9;
565 const struct db9_mode_data *db9_mode;
566 struct parport *pp;
567 struct pardevice *pd;
568 struct input_dev *input_dev;
569 int i, j;
570 int err;
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 err = -EINVAL;
575 goto err_out;
576 }
577
578 db9_mode = &db9_modes[mode];
579
580 pp = parport_find_number(parport);
581 if (!pp) {
582 printk(KERN_ERR "db9.c: no such parport\n");
583 err = -ENODEV;
584 goto err_out;
585 }
586
587 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
588 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
589 err = -EINVAL;
590 goto err_put_pp;
591 }
592
593 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
594 if (!pd) {
595 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
596 err = -EBUSY;
597 goto err_put_pp;
598 }
599
600 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
601 if (!db9) {
602 printk(KERN_ERR "db9.c: Not enough memory\n");
603 err = -ENOMEM;
604 goto err_unreg_pardev;
605 }
606
607 mutex_init(&db9->mutex);
608 db9->pd = pd;
609 db9->mode = mode;
610 init_timer(&db9->timer);
611 db9->timer.data = (long) db9;
612 db9->timer.function = db9_timer;
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 err = -ENOMEM;
620 goto err_unreg_devs;
621 }
622
623 snprintf(db9->phys[i], sizeof(db9->phys[i]),
624 "%s/input%d", db9->pd->port->name, i);
625
626 input_dev->name = db9_mode->name;
627 input_dev->phys = db9->phys[i];
628 input_dev->id.bustype = BUS_PARPORT;
629 input_dev->id.vendor = 0x0002;
630 input_dev->id.product = mode;
631 input_dev->id.version = 0x0100;
632 input_dev->private = db9;
633
634 input_dev->open = db9_open;
635 input_dev->close = db9_close;
636
637 input_dev->evbit[0] = BIT(EV_KEY) | BIT(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 err = input_register_device(input_dev);
648 if (err)
649 goto err_free_dev;
650 }
651
652 parport_put_port(pp);
653 return db9;
654
655 err_free_dev:
656 input_free_device(db9->dev[i]);
657 err_unreg_devs:
658 while (--i >= 0)
659 input_unregister_device(db9->dev[i]);
660 kfree(db9);
661 err_unreg_pardev:
662 parport_unregister_device(pd);
663 err_put_pp:
664 parport_put_port(pp);
665 err_out:
666 return ERR_PTR(err);
667 }
668
669 static void db9_remove(struct db9 *db9)
670 {
671 int i;
672
673 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
674 input_unregister_device(db9->dev[i]);
675 parport_unregister_device(db9->pd);
676 kfree(db9);
677 }
678
679 static int __init db9_init(void)
680 {
681 int i;
682 int have_dev = 0;
683 int err = 0;
684
685 for (i = 0; i < DB9_MAX_PORTS; i++) {
686 if (db9[i].nargs == 0 || db9[i].args[DB9_ARG_PARPORT] < 0)
687 continue;
688
689 if (db9[i].nargs < 2) {
690 printk(KERN_ERR "db9.c: Device type must be specified.\n");
691 err = -EINVAL;
692 break;
693 }
694
695 db9_base[i] = db9_probe(db9[i].args[DB9_ARG_PARPORT],
696 db9[i].args[DB9_ARG_MODE]);
697 if (IS_ERR(db9_base[i])) {
698 err = PTR_ERR(db9_base[i]);
699 break;
700 }
701
702 have_dev = 1;
703 }
704
705 if (err) {
706 while (--i >= 0)
707 if (db9_base[i])
708 db9_remove(db9_base[i]);
709 return err;
710 }
711
712 return have_dev ? 0 : -ENODEV;
713 }
714
715 static void __exit db9_exit(void)
716 {
717 int i;
718
719 for (i = 0; i < DB9_MAX_PORTS; i++)
720 if (db9_base[i])
721 db9_remove(db9_base[i]);
722 }
723
724 module_init(db9_init);
725 module_exit(db9_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree