?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
firewire: ohci: optimize iso context checks in the interrupt handler
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / input / joystick / db9.c
blob8e7de5c7754ffa98ef0fb869e7668b00b9a32be4
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] __initdata;
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 struct mutex mutex;
110 char phys[DB9_MAX_DEVICES][32];
111 };
112
113 static struct db9 *db9_base[3];
114
115 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
116 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
117 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
118 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 };
119
120 static const struct db9_mode_data db9_modes[] = {
121 { NULL, NULL, 0, 0, 0, 0, 0 },
122 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
123 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 },
124 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 },
125 { NULL, NULL, 0, 0, 0, 0, 0 },
126 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 },
127 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 },
128 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 },
129 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 },
130 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 },
131 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 },
132 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 },
133 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 },
134 };
135
136 /*
137 * Saturn controllers
138 */
139 #define DB9_SATURN_DELAY 300
140 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
141 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
142
143 /*
144 * db9_saturn_write_sub() writes 2 bit data.
145 */
146 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
147 {
148 unsigned char c;
149
150 switch (type) {
151 case 1: /* DPP1 */
152 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
153 parport_write_data(port, c);
154 break;
155 case 2: /* DPP2 */
156 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
157 parport_write_data(port, c);
158 break;
159 case 0: /* DB9 */
160 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
161 parport_write_control(port, c);
162 break;
163 }
164 }
165
166 /*
167 * gc_saturn_read_sub() reads 4 bit data.
168 */
169 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
170 {
171 unsigned char data;
172
173 if (type) {
174 /* DPP */
175 data = parport_read_status(port) ^ 0x80;
176 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
177 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
178 } else {
179 /* DB9 */
180 data = parport_read_data(port) & 0x0f;
181 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
182 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
183 }
184 }
185
186 /*
187 * db9_saturn_read_analog() sends clock and reads 8 bit data.
188 */
189 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
190 {
191 unsigned char data;
192
193 db9_saturn_write_sub(port, type, 0, powered, 0);
194 udelay(DB9_SATURN_DELAY);
195 data = db9_saturn_read_sub(port, type) << 4;
196 db9_saturn_write_sub(port, type, 2, powered, 0);
197 udelay(DB9_SATURN_DELAY);
198 data |= db9_saturn_read_sub(port, type);
199 return data;
200 }
201
202 /*
203 * db9_saturn_read_packet() reads whole saturn packet at connector
204 * and returns device identifier code.
205 */
206 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
207 {
208 int i, j;
209 unsigned char tmp;
210
211 db9_saturn_write_sub(port, type, 3, powered, 0);
212 data[0] = db9_saturn_read_sub(port, type);
213 switch (data[0] & 0x0f) {
214 case 0xf:
215 /* 1111 no pad */
216 return data[0] = 0xff;
217 case 0x4: case 0x4 | 0x8:
218 /* ?100 : digital controller */
219 db9_saturn_write_sub(port, type, 0, powered, 1);
220 data[2] = db9_saturn_read_sub(port, type) << 4;
221 db9_saturn_write_sub(port, type, 2, powered, 1);
222 data[1] = db9_saturn_read_sub(port, type) << 4;
223 db9_saturn_write_sub(port, type, 1, powered, 1);
224 data[1] |= db9_saturn_read_sub(port, type);
225 db9_saturn_write_sub(port, type, 3, powered, 1);
226 /* data[2] |= db9_saturn_read_sub(port, type); */
227 data[2] |= data[0];
228 return data[0] = 0x02;
229 case 0x1:
230 /* 0001 : analog controller or multitap */
231 db9_saturn_write_sub(port, type, 2, powered, 0);
232 udelay(DB9_SATURN_DELAY);
233 data[0] = db9_saturn_read_analog(port, type, powered);
234 if (data[0] != 0x41) {
235 /* read analog controller */
236 for (i = 0; i < (data[0] & 0x0f); i++)
237 data[i + 1] = db9_saturn_read_analog(port, type, powered);
238 db9_saturn_write_sub(port, type, 3, powered, 0);
239 return data[0];
240 } else {
241 /* read multitap */
242 if (db9_saturn_read_analog(port, type, powered) != 0x60)
243 return data[0] = 0xff;
244 for (i = 0; i < 60; i += 10) {
245 data[i] = db9_saturn_read_analog(port, type, powered);
246 if (data[i] != 0xff)
247 /* read each pad */
248 for (j = 0; j < (data[i] & 0x0f); j++)
249 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
250 }
251 db9_saturn_write_sub(port, type, 3, powered, 0);
252 return 0x41;
253 }
254 case 0x0:
255 /* 0000 : mouse */
256 db9_saturn_write_sub(port, type, 2, powered, 0);
257 udelay(DB9_SATURN_DELAY);
258 tmp = db9_saturn_read_analog(port, type, powered);
259 if (tmp == 0xff) {
260 for (i = 0; i < 3; i++)
261 data[i + 1] = db9_saturn_read_analog(port, type, powered);
262 db9_saturn_write_sub(port, type, 3, powered, 0);
263 return data[0] = 0xe3;
264 }
265 default:
266 return data[0];
267 }
268 }
269
270 /*
271 * db9_saturn_report() analyzes packet and reports.
272 */
273 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
274 {
275 struct input_dev *dev;
276 int tmp, i, j;
277
278 tmp = (id == 0x41) ? 60 : 10;
279 for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
280 dev = devs[n];
281 switch (data[j]) {
282 case 0x16: /* multi controller (analog 4 axis) */
283 input_report_abs(dev, db9_abs[5], data[j + 6]);
284 case 0x15: /* mission stick (analog 3 axis) */
285 input_report_abs(dev, db9_abs[3], data[j + 4]);
286 input_report_abs(dev, db9_abs[4], data[j + 5]);
287 case 0x13: /* racing controller (analog 1 axis) */
288 input_report_abs(dev, db9_abs[2], data[j + 3]);
289 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
290 case 0x02: /* digital pad (digital 2 axis + buttons) */
291 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
292 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
293 for (i = 0; i < 9; i++)
294 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
295 break;
296 case 0x19: /* mission stick x2 (analog 6 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 input_report_abs(dev, db9_abs[2], data[j + 3]);
302 input_report_abs(dev, db9_abs[3], data[j + 4]);
303 input_report_abs(dev, db9_abs[4], data[j + 5]);
304 /*
305 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
306 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
307 */
308 input_report_abs(dev, db9_abs[6], data[j + 7]);
309 input_report_abs(dev, db9_abs[7], data[j + 8]);
310 input_report_abs(dev, db9_abs[5], data[j + 9]);
311 break;
312 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
313 input_report_key(dev, BTN_A, data[j + 3] & 0x80);
314 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
315 break;
316 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
317 input_report_key(dev, BTN_START, data[j + 1] & 0x08);
318 input_report_key(dev, BTN_A, data[j + 1] & 0x04);
319 input_report_key(dev, BTN_C, data[j + 1] & 0x02);
320 input_report_key(dev, BTN_B, data[j + 1] & 0x01);
321 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
322 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
323 break;
324 case 0xff:
325 default: /* no pad */
326 input_report_abs(dev, db9_abs[0], 0);
327 input_report_abs(dev, db9_abs[1], 0);
328 for (i = 0; i < 9; i++)
329 input_report_key(dev, db9_cd32_btn[i], 0);
330 break;
331 }
332 }
333 return n;
334 }
335
336 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
337 {
338 unsigned char id, data[60];
339 int type, n, max_pads;
340 int tmp, i;
341
342 switch (mode) {
343 case DB9_SATURN_PAD:
344 type = 0;
345 n = 1;
346 break;
347 case DB9_SATURN_DPP:
348 type = 1;
349 n = 1;
350 break;
351 case DB9_SATURN_DPP_2:
352 type = 1;
353 n = 2;
354 break;
355 default:
356 return -1;
357 }
358 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
359 for (tmp = 0, i = 0; i < n; i++) {
360 id = db9_saturn_read_packet(port, data, type + i, 1);
361 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
362 }
363 return 0;
364 }
365
366 static void db9_timer(unsigned long private)
367 {
368 struct db9 *db9 = (void *) private;
369 struct parport *port = db9->pd->port;
370 struct input_dev *dev = db9->dev[0];
371 struct input_dev *dev2 = db9->dev[1];
372 int data, i;
373
374 switch (db9->mode) {
375 case DB9_MULTI_0802_2:
376
377 data = parport_read_data(port) >> 3;
378
379 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
380 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
381 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
382
383 case DB9_MULTI_0802:
384
385 data = parport_read_status(port) >> 3;
386
387 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
388 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
389 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
390 break;
391
392 case DB9_MULTI_STICK:
393
394 data = parport_read_data(port);
395
396 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
397 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
398 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
399 break;
400
401 case DB9_MULTI2_STICK:
402
403 data = parport_read_data(port);
404
405 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
406 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
407 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
408 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
409 break;
410
411 case DB9_GENESIS_PAD:
412
413 parport_write_control(port, DB9_NOSELECT);
414 data = parport_read_data(port);
415
416 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
417 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
418 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
419 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
420
421 parport_write_control(port, DB9_NORMAL);
422 data = parport_read_data(port);
423
424 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
425 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
426 break;
427
428 case DB9_GENESIS5_PAD:
429
430 parport_write_control(port, DB9_NOSELECT);
431 data = parport_read_data(port);
432
433 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
434 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
435 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
436 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
437
438 parport_write_control(port, DB9_NORMAL);
439 data = parport_read_data(port);
440
441 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
442 input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
443 input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
444 input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
445 break;
446
447 case DB9_GENESIS6_PAD:
448
449 parport_write_control(port, DB9_NOSELECT); /* 1 */
450 udelay(DB9_GENESIS6_DELAY);
451 data = parport_read_data(port);
452
453 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
454 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
455 input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
456 input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
457
458 parport_write_control(port, DB9_NORMAL);
459 udelay(DB9_GENESIS6_DELAY);
460 data = parport_read_data(port);
461
462 input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
463 input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
464
465 parport_write_control(port, DB9_NOSELECT); /* 2 */
466 udelay(DB9_GENESIS6_DELAY);
467 parport_write_control(port, DB9_NORMAL);
468 udelay(DB9_GENESIS6_DELAY);
469 parport_write_control(port, DB9_NOSELECT); /* 3 */
470 udelay(DB9_GENESIS6_DELAY);
471 data=parport_read_data(port);
472
473 input_report_key(dev, BTN_X, ~data & DB9_LEFT);
474 input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
475 input_report_key(dev, BTN_Z, ~data & DB9_UP);
476 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
477
478 parport_write_control(port, DB9_NORMAL);
479 udelay(DB9_GENESIS6_DELAY);
480 parport_write_control(port, DB9_NOSELECT); /* 4 */
481 udelay(DB9_GENESIS6_DELAY);
482 parport_write_control(port, DB9_NORMAL);
483 break;
484
485 case DB9_SATURN_PAD:
486 case DB9_SATURN_DPP:
487 case DB9_SATURN_DPP_2:
488
489 db9_saturn(db9->mode, port, db9->dev);
490 break;
491
492 case DB9_CD32_PAD:
493
494 data = parport_read_data(port);
495
496 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
497 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
498
499 parport_write_control(port, 0x0a);
500
501 for (i = 0; i < 7; i++) {
502 data = parport_read_data(port);
503 parport_write_control(port, 0x02);
504 parport_write_control(port, 0x0a);
505 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
506 }
507
508 parport_write_control(port, 0x00);
509 break;
510 }
511
512 input_sync(dev);
513
514 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
515 }
516
517 static int db9_open(struct input_dev *dev)
518 {
519 struct db9 *db9 = input_get_drvdata(dev);
520 struct parport *port = db9->pd->port;
521 int err;
522
523 err = mutex_lock_interruptible(&db9->mutex);
524 if (err)
525 return err;
526
527 if (!db9->used++) {
528 parport_claim(db9->pd);
529 parport_write_data(port, 0xff);
530 if (db9_modes[db9->mode].reverse) {
531 parport_data_reverse(port);
532 parport_write_control(port, DB9_NORMAL);
533 }
534 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
535 }
536
537 mutex_unlock(&db9->mutex);
538 return 0;
539 }
540
541 static void db9_close(struct input_dev *dev)
542 {
543 struct db9 *db9 = input_get_drvdata(dev);
544 struct parport *port = db9->pd->port;
545
546 mutex_lock(&db9->mutex);
547 if (!--db9->used) {
548 del_timer_sync(&db9->timer);
549 parport_write_control(port, 0x00);
550 parport_data_forward(port);
551 parport_release(db9->pd);
552 }
553 mutex_unlock(&db9->mutex);
554 }
555
556 static struct db9 __init *db9_probe(int parport, int mode)
557 {
558 struct db9 *db9;
559 const struct db9_mode_data *db9_mode;
560 struct parport *pp;
561 struct pardevice *pd;
562 struct input_dev *input_dev;
563 int i, j;
564 int err;
565
566 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
567 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
568 err = -EINVAL;
569 goto err_out;
570 }
571
572 db9_mode = &db9_modes[mode];
573
574 pp = parport_find_number(parport);
575 if (!pp) {
576 printk(KERN_ERR "db9.c: no such parport\n");
577 err = -ENODEV;
578 goto err_out;
579 }
580
581 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
582 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
583 err = -EINVAL;
584 goto err_put_pp;
585 }
586
587 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
588 if (!pd) {
589 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
590 err = -EBUSY;
591 goto err_put_pp;
592 }
593
594 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
595 if (!db9) {
596 printk(KERN_ERR "db9.c: Not enough memory\n");
597 err = -ENOMEM;
598 goto err_unreg_pardev;
599 }
600
601 mutex_init(&db9->mutex);
602 db9->pd = pd;
603 db9->mode = mode;
604 init_timer(&db9->timer);
605 db9->timer.data = (long) db9;
606 db9->timer.function = db9_timer;
607
608 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
609
610 db9->dev[i] = input_dev = input_allocate_device();
611 if (!input_dev) {
612 printk(KERN_ERR "db9.c: Not enough memory for input device\n");
613 err = -ENOMEM;
614 goto err_unreg_devs;
615 }
616
617 snprintf(db9->phys[i], sizeof(db9->phys[i]),
618 "%s/input%d", db9->pd->port->name, i);
619
620 input_dev->name = db9_mode->name;
621 input_dev->phys = db9->phys[i];
622 input_dev->id.bustype = BUS_PARPORT;
623 input_dev->id.vendor = 0x0002;
624 input_dev->id.product = mode;
625 input_dev->id.version = 0x0100;
626
627 input_set_drvdata(input_dev, db9);
628
629 input_dev->open = db9_open;
630 input_dev->close = db9_close;
631
632 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
633 for (j = 0; j < db9_mode->n_buttons; j++)
634 set_bit(db9_mode->buttons[j], input_dev->keybit);
635 for (j = 0; j < db9_mode->n_axis; j++) {
636 if (j < 2)
637 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
638 else
639 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
640 }
641
642 err = input_register_device(input_dev);
643 if (err)
644 goto err_free_dev;
645 }
646
647 parport_put_port(pp);
648 return db9;
649
650 err_free_dev:
651 input_free_device(db9->dev[i]);
652 err_unreg_devs:
653 while (--i >= 0)
654 input_unregister_device(db9->dev[i]);
655 kfree(db9);
656 err_unreg_pardev:
657 parport_unregister_device(pd);
658 err_put_pp:
659 parport_put_port(pp);
660 err_out:
661 return ERR_PTR(err);
662 }
663
664 static void db9_remove(struct db9 *db9)
665 {
666 int i;
667
668 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
669 input_unregister_device(db9->dev[i]);
670 parport_unregister_device(db9->pd);
671 kfree(db9);
672 }
673
674 static int __init db9_init(void)
675 {
676 int i;
677 int have_dev = 0;
678 int err = 0;
679
680 for (i = 0; i < DB9_MAX_PORTS; i++) {
681 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
682 continue;
683
684 if (db9_cfg[i].nargs < 2) {
685 printk(KERN_ERR "db9.c: Device type must be specified.\n");
686 err = -EINVAL;
687 break;
688 }
689
690 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT],
691 db9_cfg[i].args[DB9_ARG_MODE]);
692 if (IS_ERR(db9_base[i])) {
693 err = PTR_ERR(db9_base[i]);
694 break;
695 }
696
697 have_dev = 1;
698 }
699
700 if (err) {
701 while (--i >= 0)
702 if (db9_base[i])
703 db9_remove(db9_base[i]);
704 return err;
705 }
706
707 return have_dev ? 0 : -ENODEV;
708 }
709
710 static void __exit db9_exit(void)
711 {
712 int i;
713
714 for (i = 0; i < DB9_MAX_PORTS; i++)
715 if (db9_base[i])
716 db9_remove(db9_base[i]);
717 }
718
719 module_init(db9_init);
720 module_exit(db9_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree