Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * PS/2 mouse driver | |
3 | * | |
4 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
5 | * Copyright (c) 2003-2004 Dmitry Torokhov | |
6 | */ | |
7 | ||
8 | /* | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License version 2 as published by | |
11 | * the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/delay.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/input.h> | |
20 | #include <linux/serio.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/libps2.h> | |
23 | #include "psmouse.h" | |
24 | #include "synaptics.h" | |
25 | #include "logips2pp.h" | |
26 | #include "alps.h" | |
27 | ||
28 | #define DRIVER_DESC "PS/2 mouse driver" | |
29 | ||
30 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
31 | MODULE_DESCRIPTION(DRIVER_DESC); | |
32 | MODULE_LICENSE("GPL"); | |
33 | ||
34 | static unsigned int psmouse_max_proto = -1U; | |
35 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp); | |
36 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp); | |
37 | static char *psmouse_proto_abbrev[] = { NULL, "bare", NULL, NULL, NULL, "imps", "exps", NULL, NULL, NULL }; | |
38 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) | |
39 | #define param_set_proto_abbrev psmouse_set_maxproto | |
40 | #define param_get_proto_abbrev psmouse_get_maxproto | |
41 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); | |
42 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); | |
43 | ||
44 | static unsigned int psmouse_resolution = 200; | |
45 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
46 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
47 | ||
48 | static unsigned int psmouse_rate = 100; | |
49 | module_param_named(rate, psmouse_rate, uint, 0644); | |
50 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
51 | ||
52 | static unsigned int psmouse_smartscroll = 1; | |
53 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); | |
54 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
55 | ||
56 | static unsigned int psmouse_resetafter; | |
57 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); | |
58 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
59 | ||
60 | PSMOUSE_DEFINE_ATTR(rate); | |
61 | PSMOUSE_DEFINE_ATTR(resolution); | |
62 | PSMOUSE_DEFINE_ATTR(resetafter); | |
63 | ||
64 | __obsolete_setup("psmouse_noext"); | |
65 | __obsolete_setup("psmouse_resolution="); | |
66 | __obsolete_setup("psmouse_smartscroll="); | |
67 | __obsolete_setup("psmouse_resetafter="); | |
68 | __obsolete_setup("psmouse_rate="); | |
69 | ||
70 | static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "ThinkPS/2", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2", "AlpsPS/2" }; | |
71 | ||
72 | /* | |
73 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
74 | * relevant events to the input module once full packet has arrived. | |
75 | */ | |
76 | ||
77 | static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs) | |
78 | { | |
79 | struct input_dev *dev = &psmouse->dev; | |
80 | unsigned char *packet = psmouse->packet; | |
81 | ||
82 | if (psmouse->pktcnt < psmouse->pktsize) | |
83 | return PSMOUSE_GOOD_DATA; | |
84 | ||
85 | /* | |
86 | * Full packet accumulated, process it | |
87 | */ | |
88 | ||
89 | input_regs(dev, regs); | |
90 | ||
91 | /* | |
92 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
93 | */ | |
94 | ||
95 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
96 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
97 | ||
98 | /* | |
99 | * Scroll wheel and buttons on IntelliMouse Explorer | |
100 | */ | |
101 | ||
102 | if (psmouse->type == PSMOUSE_IMEX) { | |
103 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
104 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
105 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
106 | } | |
107 | ||
108 | /* | |
109 | * Extra buttons on Genius NewNet 3D | |
110 | */ | |
111 | ||
112 | if (psmouse->type == PSMOUSE_GENPS) { | |
113 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
114 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
115 | } | |
116 | ||
117 | /* | |
118 | * Extra button on ThinkingMouse | |
119 | */ | |
120 | if (psmouse->type == PSMOUSE_THINKPS) { | |
121 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
122 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
123 | packet[1] |= (packet[0] & 0x40) << 1; | |
124 | } | |
125 | ||
126 | /* | |
127 | * Generic PS/2 Mouse | |
128 | */ | |
129 | ||
130 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
131 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
132 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
133 | ||
134 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
135 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
136 | ||
137 | input_sync(dev); | |
138 | ||
139 | return PSMOUSE_FULL_PACKET; | |
140 | } | |
141 | ||
142 | /* | |
143 | * psmouse_interrupt() handles incoming characters, either gathering them into | |
144 | * packets or passing them to the command routine as command output. | |
145 | */ | |
146 | ||
147 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
148 | unsigned char data, unsigned int flags, struct pt_regs *regs) | |
149 | { | |
150 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
151 | psmouse_ret_t rc; | |
152 | ||
153 | if (psmouse->state == PSMOUSE_IGNORE) | |
154 | goto out; | |
155 | ||
156 | if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { | |
157 | if (psmouse->state == PSMOUSE_ACTIVATED) | |
158 | printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", | |
159 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
160 | flags & SERIO_PARITY ? " bad parity" : ""); | |
161 | ps2_cmd_aborted(&psmouse->ps2dev); | |
162 | goto out; | |
163 | } | |
164 | ||
165 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
166 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
167 | goto out; | |
168 | ||
169 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
170 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
171 | goto out; | |
172 | ||
173 | if (psmouse->state == PSMOUSE_INITIALIZING) | |
174 | goto out; | |
175 | ||
176 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
177 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
178 | printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n", | |
179 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
180 | psmouse->pktcnt = 0; | |
181 | } | |
182 | ||
183 | psmouse->last = jiffies; | |
184 | psmouse->packet[psmouse->pktcnt++] = data; | |
185 | ||
186 | if (psmouse->packet[0] == PSMOUSE_RET_BAT) { | |
187 | if (psmouse->pktcnt == 1) | |
188 | goto out; | |
189 | ||
190 | if (psmouse->pktcnt == 2) { | |
191 | if (psmouse->packet[1] == PSMOUSE_RET_ID) { | |
192 | psmouse->state = PSMOUSE_IGNORE; | |
193 | serio_reconnect(serio); | |
194 | goto out; | |
195 | } | |
196 | if (psmouse->type == PSMOUSE_SYNAPTICS) { | |
197 | /* neither 0xAA nor 0x00 are valid first bytes | |
198 | * for a packet in absolute mode | |
199 | */ | |
200 | psmouse->pktcnt = 0; | |
201 | goto out; | |
202 | } | |
203 | } | |
204 | } | |
205 | ||
206 | rc = psmouse->protocol_handler(psmouse, regs); | |
207 | ||
208 | switch (rc) { | |
209 | case PSMOUSE_BAD_DATA: | |
210 | printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", | |
211 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
212 | psmouse->pktcnt = 0; | |
213 | ||
214 | if (++psmouse->out_of_sync == psmouse->resetafter) { | |
215 | psmouse->state = PSMOUSE_IGNORE; | |
216 | printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); | |
217 | serio_reconnect(psmouse->ps2dev.serio); | |
218 | } | |
219 | break; | |
220 | ||
221 | case PSMOUSE_FULL_PACKET: | |
222 | psmouse->pktcnt = 0; | |
223 | if (psmouse->out_of_sync) { | |
224 | psmouse->out_of_sync = 0; | |
225 | printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", | |
226 | psmouse->name, psmouse->phys); | |
227 | } | |
228 | break; | |
229 | ||
230 | case PSMOUSE_GOOD_DATA: | |
231 | break; | |
232 | } | |
233 | out: | |
234 | return IRQ_HANDLED; | |
235 | } | |
236 | ||
237 | ||
238 | /* | |
239 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
240 | * using sliced syntax, understood by advanced devices, such as Logitech | |
241 | * or Synaptics touchpads. The command is encoded as: | |
242 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
243 | * is the command. | |
244 | */ | |
245 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
246 | { | |
247 | int i; | |
248 | ||
249 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
250 | return -1; | |
251 | ||
252 | for (i = 6; i >= 0; i -= 2) { | |
253 | unsigned char d = (command >> i) & 3; | |
254 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
255 | return -1; | |
256 | } | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | ||
262 | /* | |
263 | * psmouse_reset() resets the mouse into power-on state. | |
264 | */ | |
265 | int psmouse_reset(struct psmouse *psmouse) | |
266 | { | |
267 | unsigned char param[2]; | |
268 | ||
269 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
270 | return -1; | |
271 | ||
272 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
273 | return -1; | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | ||
279 | /* | |
280 | * Genius NetMouse magic init. | |
281 | */ | |
282 | static int genius_detect(struct psmouse *psmouse, int set_properties) | |
283 | { | |
284 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
285 | unsigned char param[4]; | |
286 | ||
287 | param[0] = 3; | |
288 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
289 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
290 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
291 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
292 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
293 | ||
294 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
295 | return -1; | |
296 | ||
297 | if (set_properties) { | |
298 | set_bit(BTN_EXTRA, psmouse->dev.keybit); | |
299 | set_bit(BTN_SIDE, psmouse->dev.keybit); | |
300 | set_bit(REL_WHEEL, psmouse->dev.relbit); | |
301 | ||
302 | psmouse->vendor = "Genius"; | |
303 | psmouse->name = "Wheel Mouse"; | |
304 | psmouse->pktsize = 4; | |
305 | } | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | /* | |
311 | * IntelliMouse magic init. | |
312 | */ | |
313 | static int intellimouse_detect(struct psmouse *psmouse, int set_properties) | |
314 | { | |
315 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
316 | unsigned char param[2]; | |
317 | ||
318 | param[0] = 200; | |
319 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
320 | param[0] = 100; | |
321 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
322 | param[0] = 80; | |
323 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
324 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
325 | ||
326 | if (param[0] != 3) | |
327 | return -1; | |
328 | ||
329 | if (set_properties) { | |
330 | set_bit(REL_WHEEL, psmouse->dev.relbit); | |
331 | ||
332 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
333 | if (!psmouse->name) psmouse->name = "Wheel Mouse"; | |
334 | psmouse->pktsize = 4; | |
335 | } | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | /* | |
341 | * Try IntelliMouse/Explorer magic init. | |
342 | */ | |
343 | static int im_explorer_detect(struct psmouse *psmouse, int set_properties) | |
344 | { | |
345 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
346 | unsigned char param[2]; | |
347 | ||
348 | intellimouse_detect(psmouse, 0); | |
349 | ||
350 | param[0] = 200; | |
351 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
352 | param[0] = 200; | |
353 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
354 | param[0] = 80; | |
355 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
356 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
357 | ||
358 | if (param[0] != 4) | |
359 | return -1; | |
360 | ||
361 | if (set_properties) { | |
362 | set_bit(REL_WHEEL, psmouse->dev.relbit); | |
363 | set_bit(BTN_SIDE, psmouse->dev.keybit); | |
364 | set_bit(BTN_EXTRA, psmouse->dev.keybit); | |
365 | ||
366 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
367 | if (!psmouse->name) psmouse->name = "Explorer Mouse"; | |
368 | psmouse->pktsize = 4; | |
369 | } | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | /* | |
375 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
376 | */ | |
377 | static int thinking_detect(struct psmouse *psmouse, int set_properties) | |
378 | { | |
379 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
380 | unsigned char param[2]; | |
381 | unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 }; | |
382 | int i; | |
383 | ||
384 | param[0] = 10; | |
385 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
386 | param[0] = 0; | |
387 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
388 | for (i = 0; seq[i]; i++) | |
389 | ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE); | |
390 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
391 | ||
392 | if (param[0] != 2) | |
393 | return -1; | |
394 | ||
395 | if (set_properties) { | |
396 | set_bit(BTN_EXTRA, psmouse->dev.keybit); | |
397 | ||
398 | psmouse->vendor = "Kensington"; | |
399 | psmouse->name = "ThinkingMouse"; | |
400 | } | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
405 | /* | |
406 | * Bare PS/2 protocol "detection". Always succeeds. | |
407 | */ | |
408 | static int ps2bare_detect(struct psmouse *psmouse, int set_properties) | |
409 | { | |
410 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
411 | if (!psmouse->name) psmouse->name = "Mouse"; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | /* | |
417 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
418 | * the mouse may have. | |
419 | */ | |
420 | ||
421 | static int psmouse_extensions(struct psmouse *psmouse, | |
422 | unsigned int max_proto, int set_properties) | |
423 | { | |
424 | int synaptics_hardware = 0; | |
425 | ||
426 | /* | |
427 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
428 | * upsets the thinkingmouse). | |
429 | */ | |
430 | ||
431 | if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0) | |
432 | return PSMOUSE_THINKPS; | |
433 | ||
434 | /* | |
435 | * Try Synaptics TouchPad | |
436 | */ | |
437 | if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { | |
438 | synaptics_hardware = 1; | |
439 | ||
440 | if (max_proto > PSMOUSE_IMEX) { | |
441 | if (!set_properties || synaptics_init(psmouse) == 0) | |
442 | return PSMOUSE_SYNAPTICS; | |
443 | /* | |
444 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
445 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
446 | * we'll have to skip them. | |
447 | */ | |
448 | max_proto = PSMOUSE_IMEX; | |
449 | } | |
450 | /* | |
451 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
452 | */ | |
453 | synaptics_reset(psmouse); | |
454 | } | |
455 | ||
456 | /* | |
457 | * Try ALPS TouchPad | |
458 | */ | |
459 | if (max_proto > PSMOUSE_IMEX) { | |
460 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
461 | if (alps_detect(psmouse, set_properties) == 0) { | |
462 | if (!set_properties || alps_init(psmouse) == 0) | |
463 | return PSMOUSE_ALPS; | |
464 | /* | |
465 | * Init failed, try basic relative protocols | |
466 | */ | |
467 | max_proto = PSMOUSE_IMEX; | |
468 | } | |
469 | } | |
470 | ||
471 | if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0) | |
472 | return PSMOUSE_GENPS; | |
473 | ||
474 | if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0) | |
475 | return PSMOUSE_PS2PP; | |
476 | ||
477 | /* | |
478 | * Reset to defaults in case the device got confused by extended | |
479 | * protocol probes. | |
480 | */ | |
481 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
482 | ||
483 | if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) | |
484 | return PSMOUSE_IMEX; | |
485 | ||
486 | if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) | |
487 | return PSMOUSE_IMPS; | |
488 | ||
489 | /* | |
490 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
491 | * is still a question, though. We assume 3. | |
492 | */ | |
493 | ps2bare_detect(psmouse, set_properties); | |
494 | ||
495 | if (synaptics_hardware) { | |
496 | /* | |
497 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
498 | * We need to reset the touchpad because if there is a track point on the | |
499 | * pass through port it could get disabled while probing for protocol | |
500 | * extensions. | |
501 | */ | |
502 | psmouse_reset(psmouse); | |
503 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
504 | } | |
505 | ||
506 | return PSMOUSE_PS2; | |
507 | } | |
508 | ||
509 | /* | |
510 | * psmouse_probe() probes for a PS/2 mouse. | |
511 | */ | |
512 | ||
513 | static int psmouse_probe(struct psmouse *psmouse) | |
514 | { | |
515 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
516 | unsigned char param[2]; | |
517 | ||
518 | /* | |
519 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
520 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
521 | */ | |
522 | ||
523 | param[0] = 0xa5; | |
524 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
525 | return -1; | |
526 | ||
527 | if (param[0] != 0x00 && param[0] != 0x03 && param[0] != 0x04) | |
528 | return -1; | |
529 | ||
530 | /* | |
531 | * Then we reset and disable the mouse so that it doesn't generate events. | |
532 | */ | |
533 | ||
534 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
535 | printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys); | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | /* | |
541 | * Here we set the mouse resolution. | |
542 | */ | |
543 | ||
544 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
545 | { | |
546 | unsigned char params[] = { 0, 1, 2, 2, 3 }; | |
547 | ||
548 | if (resolution == 0 || resolution > 200) | |
549 | resolution = 200; | |
550 | ||
551 | ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES); | |
552 | psmouse->resolution = 25 << params[resolution / 50]; | |
553 | } | |
554 | ||
555 | /* | |
556 | * Here we set the mouse report rate. | |
557 | */ | |
558 | ||
559 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
560 | { | |
561 | unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; | |
562 | int i = 0; | |
563 | ||
564 | while (rates[i] > rate) i++; | |
565 | ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE); | |
566 | psmouse->rate = rates[i]; | |
567 | } | |
568 | ||
569 | /* | |
570 | * psmouse_initialize() initializes the mouse to a sane state. | |
571 | */ | |
572 | ||
573 | static void psmouse_initialize(struct psmouse *psmouse) | |
574 | { | |
575 | /* | |
576 | * We set the mouse into streaming mode. | |
577 | */ | |
578 | ||
579 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM); | |
580 | ||
581 | /* | |
582 | * We set the mouse report rate, resolution and scaling. | |
583 | */ | |
584 | ||
585 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
586 | psmouse->set_rate(psmouse, psmouse->rate); | |
587 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
588 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
589 | } | |
590 | } | |
591 | ||
592 | /* | |
593 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
594 | * counters while holding serio lock so fighting with interrupt handler | |
595 | * is not a concern. | |
596 | */ | |
597 | ||
598 | static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
599 | { | |
600 | serio_pause_rx(psmouse->ps2dev.serio); | |
601 | psmouse->state = new_state; | |
602 | psmouse->pktcnt = psmouse->out_of_sync = 0; | |
603 | psmouse->ps2dev.flags = 0; | |
604 | serio_continue_rx(psmouse->ps2dev.serio); | |
605 | } | |
606 | ||
607 | /* | |
608 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
609 | */ | |
610 | ||
611 | static void psmouse_activate(struct psmouse *psmouse) | |
612 | { | |
613 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
614 | printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", | |
615 | psmouse->ps2dev.serio->phys); | |
616 | ||
617 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
618 | } | |
619 | ||
620 | ||
621 | /* | |
622 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
623 | * reports from it unless we explicitely request it. | |
624 | */ | |
625 | ||
626 | static void psmouse_deactivate(struct psmouse *psmouse) | |
627 | { | |
628 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
629 | printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", | |
630 | psmouse->ps2dev.serio->phys); | |
631 | ||
632 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
633 | } | |
634 | ||
635 | ||
636 | /* | |
637 | * psmouse_cleanup() resets the mouse into power-on state. | |
638 | */ | |
639 | ||
640 | static void psmouse_cleanup(struct serio *serio) | |
641 | { | |
642 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
643 | ||
644 | psmouse_reset(psmouse); | |
645 | } | |
646 | ||
647 | /* | |
648 | * psmouse_disconnect() closes and frees. | |
649 | */ | |
650 | ||
651 | static void psmouse_disconnect(struct serio *serio) | |
652 | { | |
653 | struct psmouse *psmouse, *parent; | |
654 | ||
655 | device_remove_file(&serio->dev, &psmouse_attr_rate); | |
656 | device_remove_file(&serio->dev, &psmouse_attr_resolution); | |
657 | device_remove_file(&serio->dev, &psmouse_attr_resetafter); | |
658 | ||
659 | psmouse = serio_get_drvdata(serio); | |
660 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
661 | ||
662 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
663 | parent = serio_get_drvdata(serio->parent); | |
664 | if (parent->pt_deactivate) | |
665 | parent->pt_deactivate(parent); | |
666 | } | |
667 | ||
668 | if (psmouse->disconnect) | |
669 | psmouse->disconnect(psmouse); | |
670 | ||
671 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
672 | ||
673 | input_unregister_device(&psmouse->dev); | |
674 | serio_close(serio); | |
675 | serio_set_drvdata(serio, NULL); | |
676 | kfree(psmouse); | |
677 | } | |
678 | ||
679 | /* | |
680 | * psmouse_connect() is a callback from the serio module when | |
681 | * an unhandled serio port is found. | |
682 | */ | |
683 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
684 | { | |
685 | struct psmouse *psmouse, *parent = NULL; | |
686 | int retval; | |
687 | ||
688 | /* | |
689 | * If this is a pass-through port deactivate parent so the device | |
690 | * connected to this port can be successfully identified | |
691 | */ | |
692 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
693 | parent = serio_get_drvdata(serio->parent); | |
694 | psmouse_deactivate(parent); | |
695 | } | |
696 | ||
697 | if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL))) { | |
698 | retval = -ENOMEM; | |
699 | goto out; | |
700 | } | |
701 | ||
702 | memset(psmouse, 0, sizeof(struct psmouse)); | |
703 | ||
704 | ps2_init(&psmouse->ps2dev, serio); | |
705 | sprintf(psmouse->phys, "%s/input0", serio->phys); | |
706 | psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL); | |
707 | psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); | |
708 | psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
709 | psmouse->dev.private = psmouse; | |
710 | psmouse->dev.dev = &serio->dev; | |
711 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
712 | ||
713 | serio_set_drvdata(serio, psmouse); | |
714 | ||
715 | retval = serio_open(serio, drv); | |
716 | if (retval) { | |
717 | serio_set_drvdata(serio, NULL); | |
718 | kfree(psmouse); | |
719 | goto out; | |
720 | } | |
721 | ||
722 | if (psmouse_probe(psmouse) < 0) { | |
723 | serio_close(serio); | |
724 | serio_set_drvdata(serio, NULL); | |
725 | kfree(psmouse); | |
726 | retval = -ENODEV; | |
727 | goto out; | |
728 | } | |
729 | ||
730 | psmouse->rate = psmouse_rate; | |
731 | psmouse->resolution = psmouse_resolution; | |
732 | psmouse->resetafter = psmouse_resetafter; | |
733 | psmouse->smartscroll = psmouse_smartscroll; | |
734 | psmouse->set_rate = psmouse_set_rate; | |
735 | psmouse->set_resolution = psmouse_set_resolution; | |
736 | psmouse->protocol_handler = psmouse_process_byte; | |
737 | psmouse->pktsize = 3; | |
738 | ||
739 | psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1); | |
740 | ||
741 | sprintf(psmouse->devname, "%s %s %s", | |
742 | psmouse_protocols[psmouse->type], psmouse->vendor, psmouse->name); | |
743 | ||
744 | psmouse->dev.name = psmouse->devname; | |
745 | psmouse->dev.phys = psmouse->phys; | |
746 | psmouse->dev.id.bustype = BUS_I8042; | |
747 | psmouse->dev.id.vendor = 0x0002; | |
748 | psmouse->dev.id.product = psmouse->type; | |
749 | psmouse->dev.id.version = psmouse->model; | |
750 | ||
751 | input_register_device(&psmouse->dev); | |
752 | ||
753 | printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys); | |
754 | ||
755 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
756 | ||
757 | psmouse_initialize(psmouse); | |
758 | ||
759 | if (parent && parent->pt_activate) | |
760 | parent->pt_activate(parent); | |
761 | ||
762 | device_create_file(&serio->dev, &psmouse_attr_rate); | |
763 | device_create_file(&serio->dev, &psmouse_attr_resolution); | |
764 | device_create_file(&serio->dev, &psmouse_attr_resetafter); | |
765 | ||
766 | psmouse_activate(psmouse); | |
767 | ||
768 | retval = 0; | |
769 | ||
770 | out: | |
771 | /* If this is a pass-through port the parent awaits to be activated */ | |
772 | if (parent) | |
773 | psmouse_activate(parent); | |
774 | ||
775 | return retval; | |
776 | } | |
777 | ||
778 | ||
779 | static int psmouse_reconnect(struct serio *serio) | |
780 | { | |
781 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
782 | struct psmouse *parent = NULL; | |
783 | struct serio_driver *drv = serio->drv; | |
784 | int rc = -1; | |
785 | ||
786 | if (!drv || !psmouse) { | |
787 | printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n"); | |
788 | return -1; | |
789 | } | |
790 | ||
791 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
792 | parent = serio_get_drvdata(serio->parent); | |
793 | psmouse_deactivate(parent); | |
794 | } | |
795 | ||
796 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
797 | ||
798 | if (psmouse->reconnect) { | |
799 | if (psmouse->reconnect(psmouse)) | |
800 | goto out; | |
801 | } else if (psmouse_probe(psmouse) < 0 || | |
802 | psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0)) | |
803 | goto out; | |
804 | ||
805 | /* ok, the device type (and capabilities) match the old one, | |
806 | * we can continue using it, complete intialization | |
807 | */ | |
808 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
809 | ||
810 | psmouse_initialize(psmouse); | |
811 | ||
812 | if (parent && parent->pt_activate) | |
813 | parent->pt_activate(parent); | |
814 | ||
815 | psmouse_activate(psmouse); | |
816 | rc = 0; | |
817 | ||
818 | out: | |
819 | /* If this is a pass-through port the parent waits to be activated */ | |
820 | if (parent) | |
821 | psmouse_activate(parent); | |
822 | ||
823 | return rc; | |
824 | } | |
825 | ||
826 | static struct serio_device_id psmouse_serio_ids[] = { | |
827 | { | |
828 | .type = SERIO_8042, | |
829 | .proto = SERIO_ANY, | |
830 | .id = SERIO_ANY, | |
831 | .extra = SERIO_ANY, | |
832 | }, | |
833 | { | |
834 | .type = SERIO_PS_PSTHRU, | |
835 | .proto = SERIO_ANY, | |
836 | .id = SERIO_ANY, | |
837 | .extra = SERIO_ANY, | |
838 | }, | |
839 | { 0 } | |
840 | }; | |
841 | ||
842 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
843 | ||
844 | static struct serio_driver psmouse_drv = { | |
845 | .driver = { | |
846 | .name = "psmouse", | |
847 | }, | |
848 | .description = DRIVER_DESC, | |
849 | .id_table = psmouse_serio_ids, | |
850 | .interrupt = psmouse_interrupt, | |
851 | .connect = psmouse_connect, | |
852 | .reconnect = psmouse_reconnect, | |
853 | .disconnect = psmouse_disconnect, | |
854 | .cleanup = psmouse_cleanup, | |
855 | }; | |
856 | ||
857 | ssize_t psmouse_attr_show_helper(struct device *dev, char *buf, | |
858 | ssize_t (*handler)(struct psmouse *, char *)) | |
859 | { | |
860 | struct serio *serio = to_serio_port(dev); | |
861 | int retval; | |
862 | ||
863 | retval = serio_pin_driver(serio); | |
864 | if (retval) | |
865 | return retval; | |
866 | ||
867 | if (serio->drv != &psmouse_drv) { | |
868 | retval = -ENODEV; | |
869 | goto out; | |
870 | } | |
871 | ||
872 | retval = handler(serio_get_drvdata(serio), buf); | |
873 | ||
874 | out: | |
875 | serio_unpin_driver(serio); | |
876 | return retval; | |
877 | } | |
878 | ||
879 | ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count, | |
880 | ssize_t (*handler)(struct psmouse *, const char *, size_t)) | |
881 | { | |
882 | struct serio *serio = to_serio_port(dev); | |
883 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
884 | struct psmouse *parent = NULL; | |
885 | int retval; | |
886 | ||
887 | retval = serio_pin_driver(serio); | |
888 | if (retval) | |
889 | return retval; | |
890 | ||
891 | if (serio->drv != &psmouse_drv) { | |
892 | retval = -ENODEV; | |
893 | goto out; | |
894 | } | |
895 | ||
896 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
897 | parent = serio_get_drvdata(serio->parent); | |
898 | psmouse_deactivate(parent); | |
899 | } | |
900 | psmouse_deactivate(psmouse); | |
901 | ||
902 | retval = handler(psmouse, buf, count); | |
903 | ||
904 | psmouse_activate(psmouse); | |
905 | if (parent) | |
906 | psmouse_activate(parent); | |
907 | ||
908 | out: | |
909 | serio_unpin_driver(serio); | |
910 | return retval; | |
911 | } | |
912 | ||
913 | static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf) | |
914 | { | |
915 | return sprintf(buf, "%d\n", psmouse->rate); | |
916 | } | |
917 | ||
918 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count) | |
919 | { | |
920 | unsigned long value; | |
921 | char *rest; | |
922 | ||
923 | value = simple_strtoul(buf, &rest, 10); | |
924 | if (*rest) | |
925 | return -EINVAL; | |
926 | ||
927 | psmouse->set_rate(psmouse, value); | |
928 | return count; | |
929 | } | |
930 | ||
931 | static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf) | |
932 | { | |
933 | return sprintf(buf, "%d\n", psmouse->resolution); | |
934 | } | |
935 | ||
936 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count) | |
937 | { | |
938 | unsigned long value; | |
939 | char *rest; | |
940 | ||
941 | value = simple_strtoul(buf, &rest, 10); | |
942 | if (*rest) | |
943 | return -EINVAL; | |
944 | ||
945 | psmouse->set_resolution(psmouse, value); | |
946 | return count; | |
947 | } | |
948 | ||
949 | static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf) | |
950 | { | |
951 | return sprintf(buf, "%d\n", psmouse->resetafter); | |
952 | } | |
953 | ||
954 | static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count) | |
955 | { | |
956 | unsigned long value; | |
957 | char *rest; | |
958 | ||
959 | value = simple_strtoul(buf, &rest, 10); | |
960 | if (*rest) | |
961 | return -EINVAL; | |
962 | ||
963 | psmouse->resetafter = value; | |
964 | return count; | |
965 | } | |
966 | ||
967 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp) | |
968 | { | |
969 | int i; | |
970 | ||
971 | if (!val) | |
972 | return -EINVAL; | |
973 | ||
974 | if (!strncmp(val, "any", 3)) { | |
271b74d0 | 975 | *((unsigned int *)kp->arg) = -1U; |
1da177e4 LT |
976 | return 0; |
977 | } | |
978 | ||
979 | for (i = 0; i < ARRAY_SIZE(psmouse_proto_abbrev); i++) { | |
980 | if (!psmouse_proto_abbrev[i]) | |
981 | continue; | |
982 | ||
983 | if (!strncmp(val, psmouse_proto_abbrev[i], strlen(psmouse_proto_abbrev[i]))) { | |
984 | *((unsigned int *)kp->arg) = i; | |
985 | return 0; | |
986 | } | |
987 | } | |
988 | ||
989 | return -EINVAL; \ | |
990 | } | |
991 | ||
992 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp) | |
993 | { | |
994 | return sprintf(buffer, "%s\n", | |
995 | psmouse_max_proto < ARRAY_SIZE(psmouse_proto_abbrev) ? | |
996 | psmouse_proto_abbrev[psmouse_max_proto] : "any"); | |
997 | } | |
998 | ||
999 | static int __init psmouse_init(void) | |
1000 | { | |
1001 | serio_register_driver(&psmouse_drv); | |
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | static void __exit psmouse_exit(void) | |
1006 | { | |
1007 | serio_unregister_driver(&psmouse_drv); | |
1008 | } | |
1009 | ||
1010 | module_init(psmouse_init); | |
1011 | module_exit(psmouse_exit); |