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14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15#define psmouse_fmt(fmt) fmt
16
17#include <linux/bitops.h>
18#include <linux/delay.h>
19#include <linux/module.h>
20#include <linux/slab.h>
21#include <linux/interrupt.h>
22#include <linux/input.h>
23#include <linux/serio.h>
24#include <linux/init.h>
25#include <linux/libps2.h>
26#include <linux/mutex.h>
27#include <linux/types.h>
28
29#include "psmouse.h"
30#include "synaptics.h"
31#include "logips2pp.h"
32#include "alps.h"
33#include "hgpk.h"
34#include "lifebook.h"
35#include "trackpoint.h"
36#include "touchkit_ps2.h"
37#include "elantech.h"
38#include "sentelic.h"
39#include "cypress_ps2.h"
40#include "focaltech.h"
41#include "vmmouse.h"
42#include "byd.h"
43
44#define DRIVER_DESC "PS/2 mouse driver"
45
46MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
47MODULE_DESCRIPTION(DRIVER_DESC);
48MODULE_LICENSE("GPL");
49
50static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
51static int psmouse_set_maxproto(const char *val, const struct kernel_param *);
52static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp);
53static const struct kernel_param_ops param_ops_proto_abbrev = {
54 .set = psmouse_set_maxproto,
55 .get = psmouse_get_maxproto,
56};
57#define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
58module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
59MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
60
61static unsigned int psmouse_resolution = 200;
62module_param_named(resolution, psmouse_resolution, uint, 0644);
63MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
64
65static unsigned int psmouse_rate = 100;
66module_param_named(rate, psmouse_rate, uint, 0644);
67MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
68
69static bool psmouse_smartscroll = true;
70module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
71MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
72
73static bool psmouse_a4tech_2wheels;
74module_param_named(a4tech_workaround, psmouse_a4tech_2wheels, bool, 0644);
75MODULE_PARM_DESC(a4tech_workaround, "A4Tech second scroll wheel workaround, 1 = enabled, 0 = disabled (default).");
76
77static unsigned int psmouse_resetafter = 5;
78module_param_named(resetafter, psmouse_resetafter, uint, 0644);
79MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
80
81static unsigned int psmouse_resync_time;
82module_param_named(resync_time, psmouse_resync_time, uint, 0644);
83MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
84
85PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO,
86 NULL,
87 psmouse_attr_show_protocol, psmouse_attr_set_protocol);
88PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
89 (void *) offsetof(struct psmouse, rate),
90 psmouse_show_int_attr, psmouse_attr_set_rate);
91PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
92 (void *) offsetof(struct psmouse, resolution),
93 psmouse_show_int_attr, psmouse_attr_set_resolution);
94PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
95 (void *) offsetof(struct psmouse, resetafter),
96 psmouse_show_int_attr, psmouse_set_int_attr);
97PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO,
98 (void *) offsetof(struct psmouse, resync_time),
99 psmouse_show_int_attr, psmouse_set_int_attr);
100
101static struct attribute *psmouse_attributes[] = {
102 &psmouse_attr_protocol.dattr.attr,
103 &psmouse_attr_rate.dattr.attr,
104 &psmouse_attr_resolution.dattr.attr,
105 &psmouse_attr_resetafter.dattr.attr,
106 &psmouse_attr_resync_time.dattr.attr,
107 NULL
108};
109
110static const struct attribute_group psmouse_attribute_group = {
111 .attrs = psmouse_attributes,
112};
113
114
115
116
117
118
119
120
121static DEFINE_MUTEX(psmouse_mutex);
122
123static struct workqueue_struct *kpsmoused_wq;
124
125void psmouse_report_standard_buttons(struct input_dev *dev, u8 buttons)
126{
127 input_report_key(dev, BTN_LEFT, buttons & BIT(0));
128 input_report_key(dev, BTN_MIDDLE, buttons & BIT(2));
129 input_report_key(dev, BTN_RIGHT, buttons & BIT(1));
130}
131
132void psmouse_report_standard_motion(struct input_dev *dev, u8 *packet)
133{
134 int x, y;
135
136 x = packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0;
137 y = packet[2] ? packet[2] - ((packet[0] << 3) & 0x100) : 0;
138
139 input_report_rel(dev, REL_X, x);
140 input_report_rel(dev, REL_Y, -y);
141}
142
143void psmouse_report_standard_packet(struct input_dev *dev, u8 *packet)
144{
145 psmouse_report_standard_buttons(dev, packet[0]);
146 psmouse_report_standard_motion(dev, packet);
147}
148
149
150
151
152
153psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
154{
155 struct input_dev *dev = psmouse->dev;
156 u8 *packet = psmouse->packet;
157 int wheel;
158
159 if (psmouse->pktcnt < psmouse->pktsize)
160 return PSMOUSE_GOOD_DATA;
161
162
163
164 switch (psmouse->protocol->type) {
165 case PSMOUSE_IMPS:
166
167 input_report_rel(dev, REL_WHEEL, -(s8) packet[3]);
168 break;
169
170 case PSMOUSE_IMEX:
171
172 switch (packet[3] & 0xC0) {
173 case 0x80:
174 input_report_rel(dev, REL_WHEEL,
175 -sign_extend32(packet[3], 5));
176 break;
177 case 0x40:
178 input_report_rel(dev, REL_HWHEEL,
179 -sign_extend32(packet[3], 5));
180 break;
181 case 0x00:
182 case 0xC0:
183 wheel = sign_extend32(packet[3], 3);
184
185
186
187
188
189
190 if (psmouse_a4tech_2wheels && abs(wheel) > 1)
191 input_report_rel(dev, REL_HWHEEL, wheel / 2);
192 else
193 input_report_rel(dev, REL_WHEEL, -wheel);
194
195 input_report_key(dev, BTN_SIDE, packet[3] & BIT(4));
196 input_report_key(dev, BTN_EXTRA, packet[3] & BIT(5));
197 break;
198 }
199 break;
200
201 case PSMOUSE_GENPS:
202
203 input_report_rel(dev, REL_WHEEL, -(s8) packet[3]);
204
205
206 input_report_key(dev, BTN_SIDE, packet[0] & BIT(6));
207 input_report_key(dev, BTN_EXTRA, packet[0] & BIT(7));
208 break;
209
210 case PSMOUSE_THINKPS:
211
212 input_report_key(dev, BTN_EXTRA, packet[0] & BIT(3));
213
214
215
216
217
218 packet[1] |= (packet[0] & 0x40) << 1;
219 break;
220
221 case PSMOUSE_CORTRON:
222
223
224
225
226 input_report_key(dev, BTN_SIDE, packet[0] & BIT(3));
227 packet[0] |= BIT(3);
228 break;
229
230 default:
231 break;
232 }
233
234
235 packet[0] |= psmouse->extra_buttons;
236 psmouse_report_standard_packet(dev, packet);
237
238 input_sync(dev);
239
240 return PSMOUSE_FULL_PACKET;
241}
242
243void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work,
244 unsigned long delay)
245{
246 queue_delayed_work(kpsmoused_wq, work, delay);
247}
248
249
250
251
252static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
253{
254 psmouse->state = new_state;
255 psmouse->pktcnt = psmouse->out_of_sync_cnt = 0;
256 psmouse->ps2dev.flags = 0;
257 psmouse->last = jiffies;
258}
259
260
261
262
263
264
265void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
266{
267 serio_pause_rx(psmouse->ps2dev.serio);
268 __psmouse_set_state(psmouse, new_state);
269 serio_continue_rx(psmouse->ps2dev.serio);
270}
271
272
273
274
275
276static int psmouse_handle_byte(struct psmouse *psmouse)
277{
278 psmouse_ret_t rc = psmouse->protocol_handler(psmouse);
279
280 switch (rc) {
281 case PSMOUSE_BAD_DATA:
282 if (psmouse->state == PSMOUSE_ACTIVATED) {
283 psmouse_warn(psmouse,
284 "%s at %s lost sync at byte %d\n",
285 psmouse->name, psmouse->phys,
286 psmouse->pktcnt);
287 if (++psmouse->out_of_sync_cnt == psmouse->resetafter) {
288 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
289 psmouse_notice(psmouse,
290 "issuing reconnect request\n");
291 serio_reconnect(psmouse->ps2dev.serio);
292 return -EIO;
293 }
294 }
295 psmouse->pktcnt = 0;
296 break;
297
298 case PSMOUSE_FULL_PACKET:
299 psmouse->pktcnt = 0;
300 if (psmouse->out_of_sync_cnt) {
301 psmouse->out_of_sync_cnt = 0;
302 psmouse_notice(psmouse,
303 "%s at %s - driver resynced.\n",
304 psmouse->name, psmouse->phys);
305 }
306 break;
307
308 case PSMOUSE_GOOD_DATA:
309 break;
310 }
311 return 0;
312}
313
314static void psmouse_handle_oob_data(struct psmouse *psmouse, u8 data)
315{
316 switch (psmouse->oob_data_type) {
317 case PSMOUSE_OOB_NONE:
318 psmouse->oob_data_type = data;
319 break;
320
321 case PSMOUSE_OOB_EXTRA_BTNS:
322 psmouse_report_standard_buttons(psmouse->dev, data);
323 input_sync(psmouse->dev);
324
325 psmouse->extra_buttons = data;
326 psmouse->oob_data_type = PSMOUSE_OOB_NONE;
327 break;
328
329 default:
330 psmouse_warn(psmouse,
331 "unknown OOB_DATA type: 0x%02x\n",
332 psmouse->oob_data_type);
333 psmouse->oob_data_type = PSMOUSE_OOB_NONE;
334 break;
335 }
336}
337
338
339
340
341
342static irqreturn_t psmouse_interrupt(struct serio *serio,
343 u8 data, unsigned int flags)
344{
345 struct psmouse *psmouse = serio_get_drvdata(serio);
346
347 if (psmouse->state == PSMOUSE_IGNORE)
348 goto out;
349
350 if (unlikely((flags & SERIO_TIMEOUT) ||
351 ((flags & SERIO_PARITY) &&
352 !psmouse->protocol->ignore_parity))) {
353
354 if (psmouse->state == PSMOUSE_ACTIVATED)
355 psmouse_warn(psmouse,
356 "bad data from KBC -%s%s\n",
357 flags & SERIO_TIMEOUT ? " timeout" : "",
358 flags & SERIO_PARITY ? " bad parity" : "");
359 ps2_cmd_aborted(&psmouse->ps2dev);
360 goto out;
361 }
362
363 if (flags & SERIO_OOB_DATA) {
364 psmouse_handle_oob_data(psmouse, data);
365 goto out;
366 }
367
368 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
369 if (ps2_handle_ack(&psmouse->ps2dev, data))
370 goto out;
371
372 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
373 if (ps2_handle_response(&psmouse->ps2dev, data))
374 goto out;
375
376 if (psmouse->state <= PSMOUSE_RESYNCING)
377 goto out;
378
379 if (psmouse->state == PSMOUSE_ACTIVATED &&
380 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
381 psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n",
382 psmouse->name, psmouse->phys, psmouse->pktcnt);
383 psmouse->badbyte = psmouse->packet[0];
384 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
385 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
386 goto out;
387 }
388
389 psmouse->packet[psmouse->pktcnt++] = data;
390
391
392 if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
393 if (psmouse->pktcnt == 1) {
394 psmouse->last = jiffies;
395 goto out;
396 }
397
398 if (psmouse->packet[1] == PSMOUSE_RET_ID ||
399 (psmouse->protocol->type == PSMOUSE_HGPK &&
400 psmouse->packet[1] == PSMOUSE_RET_BAT)) {
401 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
402 serio_reconnect(serio);
403 goto out;
404 }
405
406
407 psmouse->pktcnt = 1;
408 if (psmouse_handle_byte(psmouse))
409 goto out;
410
411 psmouse->packet[psmouse->pktcnt++] = data;
412 }
413
414
415
416
417
418 if (psmouse->state == PSMOUSE_ACTIVATED &&
419 psmouse->pktcnt == 1 && psmouse->resync_time &&
420 time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) {
421 psmouse->badbyte = psmouse->packet[0];
422 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
423 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
424 goto out;
425 }
426
427 psmouse->last = jiffies;
428 psmouse_handle_byte(psmouse);
429
430 out:
431 return IRQ_HANDLED;
432}
433
434
435
436
437int psmouse_reset(struct psmouse *psmouse)
438{
439 u8 param[2];
440 int error;
441
442 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT);
443 if (error)
444 return error;
445
446 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
447 return -EIO;
448
449 return 0;
450}
451
452
453
454
455void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
456{
457 static const u8 params[] = { 0, 1, 2, 2, 3 };
458 u8 p;
459
460 if (resolution == 0 || resolution > 200)
461 resolution = 200;
462
463 p = params[resolution / 50];
464 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
465 psmouse->resolution = 25 << p;
466}
467
468
469
470
471static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
472{
473 static const u8 rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
474 u8 r;
475 int i = 0;
476
477 while (rates[i] > rate)
478 i++;
479 r = rates[i];
480 ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE);
481 psmouse->rate = r;
482}
483
484
485
486
487static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale)
488{
489 ps2_command(&psmouse->ps2dev, NULL,
490 scale == PSMOUSE_SCALE21 ? PSMOUSE_CMD_SETSCALE21 :
491 PSMOUSE_CMD_SETSCALE11);
492}
493
494
495
496
497static int psmouse_poll(struct psmouse *psmouse)
498{
499 return ps2_command(&psmouse->ps2dev, psmouse->packet,
500 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8));
501}
502
503static bool psmouse_check_pnp_id(const char *id, const char * const ids[])
504{
505 int i;
506
507 for (i = 0; ids[i]; i++)
508 if (!strcasecmp(id, ids[i]))
509 return true;
510
511 return false;
512}
513
514
515
516
517bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[])
518{
519 struct serio *serio = psmouse->ps2dev.serio;
520 char *p, *fw_id_copy, *save_ptr;
521 bool found = false;
522
523 if (strncmp(serio->firmware_id, "PNP: ", 5))
524 return false;
525
526 fw_id_copy = kstrndup(&serio->firmware_id[5],
527 sizeof(serio->firmware_id) - 5,
528 GFP_KERNEL);
529 if (!fw_id_copy)
530 return false;
531
532 save_ptr = fw_id_copy;
533 while ((p = strsep(&fw_id_copy, " ")) != NULL) {
534 if (psmouse_check_pnp_id(p, ids)) {
535 found = true;
536 break;
537 }
538 }
539
540 kfree(save_ptr);
541 return found;
542}
543
544
545
546
547static int genius_detect(struct psmouse *psmouse, bool set_properties)
548{
549 struct ps2dev *ps2dev = &psmouse->ps2dev;
550 u8 param[4];
551
552 param[0] = 3;
553 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
554 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
555 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
556 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
557 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
558
559 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
560 return -ENODEV;
561
562 if (set_properties) {
563 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
564 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
565 __set_bit(BTN_SIDE, psmouse->dev->keybit);
566 __set_bit(REL_WHEEL, psmouse->dev->relbit);
567
568 psmouse->vendor = "Genius";
569 psmouse->name = "Mouse";
570 psmouse->pktsize = 4;
571 }
572
573 return 0;
574}
575
576
577
578
579static int intellimouse_detect(struct psmouse *psmouse, bool set_properties)
580{
581 struct ps2dev *ps2dev = &psmouse->ps2dev;
582 u8 param[2];
583
584 param[0] = 200;
585 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
586 param[0] = 100;
587 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
588 param[0] = 80;
589 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
590 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
591
592 if (param[0] != 3)
593 return -ENODEV;
594
595 if (set_properties) {
596 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
597 __set_bit(REL_WHEEL, psmouse->dev->relbit);
598
599 if (!psmouse->vendor)
600 psmouse->vendor = "Generic";
601 if (!psmouse->name)
602 psmouse->name = "Wheel Mouse";
603 psmouse->pktsize = 4;
604 }
605
606 return 0;
607}
608
609
610
611
612static int im_explorer_detect(struct psmouse *psmouse, bool set_properties)
613{
614 struct ps2dev *ps2dev = &psmouse->ps2dev;
615 u8 param[2];
616
617 intellimouse_detect(psmouse, 0);
618
619 param[0] = 200;
620 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
621 param[0] = 200;
622 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
623 param[0] = 80;
624 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
625 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
626
627 if (param[0] != 4)
628 return -ENODEV;
629
630
631 param[0] = 200;
632 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
633 param[0] = 80;
634 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
635 param[0] = 40;
636 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
637
638 if (set_properties) {
639 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
640 __set_bit(REL_WHEEL, psmouse->dev->relbit);
641 __set_bit(REL_HWHEEL, psmouse->dev->relbit);
642 __set_bit(BTN_SIDE, psmouse->dev->keybit);
643 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
644
645 if (!psmouse->vendor)
646 psmouse->vendor = "Generic";
647 if (!psmouse->name)
648 psmouse->name = "Explorer Mouse";
649 psmouse->pktsize = 4;
650 }
651
652 return 0;
653}
654
655
656
657
658static int thinking_detect(struct psmouse *psmouse, bool set_properties)
659{
660 struct ps2dev *ps2dev = &psmouse->ps2dev;
661 u8 param[2];
662 static const u8 seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
663 int i;
664
665 param[0] = 10;
666 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
667 param[0] = 0;
668 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
669 for (i = 0; i < ARRAY_SIZE(seq); i++) {
670 param[0] = seq[i];
671 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
672 }
673 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
674
675 if (param[0] != 2)
676 return -ENODEV;
677
678 if (set_properties) {
679 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
680 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
681
682 psmouse->vendor = "Kensington";
683 psmouse->name = "ThinkingMouse";
684 }
685
686 return 0;
687}
688
689
690
691
692static int ps2bare_detect(struct psmouse *psmouse, bool set_properties)
693{
694 if (set_properties) {
695 if (!psmouse->vendor)
696 psmouse->vendor = "Generic";
697 if (!psmouse->name)
698 psmouse->name = "Mouse";
699
700
701
702
703
704 input_set_capability(psmouse->dev, EV_KEY, BTN_MIDDLE);
705 }
706
707 return 0;
708}
709
710
711
712
713
714static int cortron_detect(struct psmouse *psmouse, bool set_properties)
715{
716 if (set_properties) {
717 psmouse->vendor = "Cortron";
718 psmouse->name = "PS/2 Trackball";
719
720 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
721 __set_bit(BTN_SIDE, psmouse->dev->keybit);
722 }
723
724 return 0;
725}
726
727static const struct psmouse_protocol psmouse_protocols[] = {
728 {
729 .type = PSMOUSE_PS2,
730 .name = "PS/2",
731 .alias = "bare",
732 .maxproto = true,
733 .ignore_parity = true,
734 .detect = ps2bare_detect,
735 .try_passthru = true,
736 },
737#ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
738 {
739 .type = PSMOUSE_PS2PP,
740 .name = "PS2++",
741 .alias = "logitech",
742 .detect = ps2pp_detect,
743 },
744#endif
745 {
746 .type = PSMOUSE_THINKPS,
747 .name = "ThinkPS/2",
748 .alias = "thinkps",
749 .detect = thinking_detect,
750 },
751#ifdef CONFIG_MOUSE_PS2_CYPRESS
752 {
753 .type = PSMOUSE_CYPRESS,
754 .name = "CyPS/2",
755 .alias = "cypress",
756 .detect = cypress_detect,
757 .init = cypress_init,
758 },
759#endif
760 {
761 .type = PSMOUSE_GENPS,
762 .name = "GenPS/2",
763 .alias = "genius",
764 .detect = genius_detect,
765 },
766 {
767 .type = PSMOUSE_IMPS,
768 .name = "ImPS/2",
769 .alias = "imps",
770 .maxproto = true,
771 .ignore_parity = true,
772 .detect = intellimouse_detect,
773 .try_passthru = true,
774 },
775 {
776 .type = PSMOUSE_IMEX,
777 .name = "ImExPS/2",
778 .alias = "exps",
779 .maxproto = true,
780 .ignore_parity = true,
781 .detect = im_explorer_detect,
782 .try_passthru = true,
783 },
784#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
785 {
786 .type = PSMOUSE_SYNAPTICS,
787 .name = "SynPS/2",
788 .alias = "synaptics",
789 .detect = synaptics_detect,
790 .init = synaptics_init_absolute,
791 },
792 {
793 .type = PSMOUSE_SYNAPTICS_RELATIVE,
794 .name = "SynRelPS/2",
795 .alias = "synaptics-relative",
796 .detect = synaptics_detect,
797 .init = synaptics_init_relative,
798 },
799#endif
800#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
801 {
802 .type = PSMOUSE_SYNAPTICS_SMBUS,
803 .name = "SynSMBus",
804 .alias = "synaptics-smbus",
805 .detect = synaptics_detect,
806 .init = synaptics_init_smbus,
807 .smbus_companion = true,
808 },
809#endif
810#ifdef CONFIG_MOUSE_PS2_ALPS
811 {
812 .type = PSMOUSE_ALPS,
813 .name = "AlpsPS/2",
814 .alias = "alps",
815 .detect = alps_detect,
816 .init = alps_init,
817 },
818#endif
819#ifdef CONFIG_MOUSE_PS2_LIFEBOOK
820 {
821 .type = PSMOUSE_LIFEBOOK,
822 .name = "LBPS/2",
823 .alias = "lifebook",
824 .detect = lifebook_detect,
825 .init = lifebook_init,
826 },
827#endif
828#ifdef CONFIG_MOUSE_PS2_TRACKPOINT
829 {
830 .type = PSMOUSE_TRACKPOINT,
831 .name = "TPPS/2",
832 .alias = "trackpoint",
833 .detect = trackpoint_detect,
834 .try_passthru = true,
835 },
836#endif
837#ifdef CONFIG_MOUSE_PS2_TOUCHKIT
838 {
839 .type = PSMOUSE_TOUCHKIT_PS2,
840 .name = "touchkitPS/2",
841 .alias = "touchkit",
842 .detect = touchkit_ps2_detect,
843 },
844#endif
845#ifdef CONFIG_MOUSE_PS2_OLPC
846 {
847 .type = PSMOUSE_HGPK,
848 .name = "OLPC HGPK",
849 .alias = "hgpk",
850 .detect = hgpk_detect,
851 },
852#endif
853#ifdef CONFIG_MOUSE_PS2_ELANTECH
854 {
855 .type = PSMOUSE_ELANTECH,
856 .name = "ETPS/2",
857 .alias = "elantech",
858 .detect = elantech_detect,
859 .init = elantech_init_ps2,
860 },
861#endif
862#ifdef CONFIG_MOUSE_PS2_ELANTECH_SMBUS
863 {
864 .type = PSMOUSE_ELANTECH_SMBUS,
865 .name = "ETSMBus",
866 .alias = "elantech-smbus",
867 .detect = elantech_detect,
868 .init = elantech_init_smbus,
869 .smbus_companion = true,
870 },
871#endif
872#ifdef CONFIG_MOUSE_PS2_SENTELIC
873 {
874 .type = PSMOUSE_FSP,
875 .name = "FSPPS/2",
876 .alias = "fsp",
877 .detect = fsp_detect,
878 .init = fsp_init,
879 },
880#endif
881 {
882 .type = PSMOUSE_CORTRON,
883 .name = "CortronPS/2",
884 .alias = "cortps",
885 .detect = cortron_detect,
886 },
887#ifdef CONFIG_MOUSE_PS2_FOCALTECH
888 {
889 .type = PSMOUSE_FOCALTECH,
890 .name = "FocalTechPS/2",
891 .alias = "focaltech",
892 .detect = focaltech_detect,
893 .init = focaltech_init,
894 },
895#endif
896#ifdef CONFIG_MOUSE_PS2_VMMOUSE
897 {
898 .type = PSMOUSE_VMMOUSE,
899 .name = VMMOUSE_PSNAME,
900 .alias = "vmmouse",
901 .detect = vmmouse_detect,
902 .init = vmmouse_init,
903 },
904#endif
905#ifdef CONFIG_MOUSE_PS2_BYD
906 {
907 .type = PSMOUSE_BYD,
908 .name = "BYDPS/2",
909 .alias = "byd",
910 .detect = byd_detect,
911 .init = byd_init,
912 },
913#endif
914 {
915 .type = PSMOUSE_AUTO,
916 .name = "auto",
917 .alias = "any",
918 .maxproto = true,
919 },
920};
921
922static const struct psmouse_protocol *__psmouse_protocol_by_type(enum psmouse_type type)
923{
924 int i;
925
926 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
927 if (psmouse_protocols[i].type == type)
928 return &psmouse_protocols[i];
929
930 return NULL;
931}
932
933static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
934{
935 const struct psmouse_protocol *proto;
936
937 proto = __psmouse_protocol_by_type(type);
938 if (proto)
939 return proto;
940
941 WARN_ON(1);
942 return &psmouse_protocols[0];
943}
944
945static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
946{
947 const struct psmouse_protocol *p;
948 int i;
949
950 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
951 p = &psmouse_protocols[i];
952
953 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
954 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
955 return &psmouse_protocols[i];
956 }
957
958 return NULL;
959}
960
961
962
963
964
965static void psmouse_apply_defaults(struct psmouse *psmouse)
966{
967 struct input_dev *input_dev = psmouse->dev;
968
969 bitmap_zero(input_dev->evbit, EV_CNT);
970 bitmap_zero(input_dev->keybit, KEY_CNT);
971 bitmap_zero(input_dev->relbit, REL_CNT);
972 bitmap_zero(input_dev->absbit, ABS_CNT);
973 bitmap_zero(input_dev->mscbit, MSC_CNT);
974
975 input_set_capability(input_dev, EV_KEY, BTN_LEFT);
976 input_set_capability(input_dev, EV_KEY, BTN_RIGHT);
977
978 input_set_capability(input_dev, EV_REL, REL_X);
979 input_set_capability(input_dev, EV_REL, REL_Y);
980
981 __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
982
983 psmouse->protocol = &psmouse_protocols[0];
984
985 psmouse->set_rate = psmouse_set_rate;
986 psmouse->set_resolution = psmouse_set_resolution;
987 psmouse->set_scale = psmouse_set_scale;
988 psmouse->poll = psmouse_poll;
989 psmouse->protocol_handler = psmouse_process_byte;
990 psmouse->pktsize = 3;
991 psmouse->reconnect = NULL;
992 psmouse->fast_reconnect = NULL;
993 psmouse->disconnect = NULL;
994 psmouse->cleanup = NULL;
995 psmouse->pt_activate = NULL;
996 psmouse->pt_deactivate = NULL;
997}
998
999static bool psmouse_do_detect(int (*detect)(struct psmouse *, bool),
1000 struct psmouse *psmouse, bool allow_passthrough,
1001 bool set_properties)
1002{
1003 if (psmouse->ps2dev.serio->id.type == SERIO_PS_PSTHRU &&
1004 !allow_passthrough) {
1005 return false;
1006 }
1007
1008 if (set_properties)
1009 psmouse_apply_defaults(psmouse);
1010
1011 return detect(psmouse, set_properties) == 0;
1012}
1013
1014static bool psmouse_try_protocol(struct psmouse *psmouse,
1015 enum psmouse_type type,
1016 unsigned int *max_proto,
1017 bool set_properties, bool init_allowed)
1018{
1019 const struct psmouse_protocol *proto;
1020
1021 proto = __psmouse_protocol_by_type(type);
1022 if (!proto)
1023 return false;
1024
1025 if (!psmouse_do_detect(proto->detect, psmouse, proto->try_passthru,
1026 set_properties))
1027 return false;
1028
1029 if (set_properties && proto->init && init_allowed) {
1030 if (proto->init(psmouse) != 0) {
1031
1032
1033
1034
1035 if (*max_proto > PSMOUSE_IMEX)
1036 *max_proto = PSMOUSE_IMEX;
1037
1038 return false;
1039 }
1040 }
1041
1042 return true;
1043}
1044
1045
1046
1047
1048
1049static int psmouse_extensions(struct psmouse *psmouse,
1050 unsigned int max_proto, bool set_properties)
1051{
1052 bool synaptics_hardware = false;
1053 int ret;
1054
1055
1056
1057
1058
1059 if (psmouse_do_detect(focaltech_detect,
1060 psmouse, false, set_properties)) {
1061 if (max_proto > PSMOUSE_IMEX &&
1062 IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH) &&
1063 (!set_properties || focaltech_init(psmouse) == 0)) {
1064 return PSMOUSE_FOCALTECH;
1065 }
1066
1067
1068
1069
1070
1071
1072
1073
1074 psmouse_max_proto = max_proto = PSMOUSE_PS2;
1075 }
1076
1077
1078
1079
1080
1081 if (psmouse_try_protocol(psmouse, PSMOUSE_LIFEBOOK, &max_proto,
1082 set_properties, max_proto > PSMOUSE_IMEX))
1083 return PSMOUSE_LIFEBOOK;
1084
1085 if (psmouse_try_protocol(psmouse, PSMOUSE_VMMOUSE, &max_proto,
1086 set_properties, max_proto > PSMOUSE_IMEX))
1087 return PSMOUSE_VMMOUSE;
1088
1089
1090
1091
1092
1093 if (max_proto > PSMOUSE_IMEX &&
1094 psmouse_try_protocol(psmouse, PSMOUSE_THINKPS, &max_proto,
1095 set_properties, true)) {
1096 return PSMOUSE_THINKPS;
1097 }
1098
1099
1100
1101
1102
1103
1104
1105 if (max_proto > PSMOUSE_PS2 &&
1106 psmouse_do_detect(synaptics_detect,
1107 psmouse, false, set_properties)) {
1108 synaptics_hardware = true;
1109
1110 if (max_proto > PSMOUSE_IMEX) {
1111
1112
1113
1114
1115
1116 if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) ||
1117 IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) {
1118 if (!set_properties)
1119 return PSMOUSE_SYNAPTICS;
1120
1121 ret = synaptics_init(psmouse);
1122 if (ret >= 0)
1123 return ret;
1124 }
1125
1126
1127
1128
1129
1130
1131
1132 max_proto = PSMOUSE_IMEX;
1133 }
1134
1135
1136
1137
1138
1139 synaptics_reset(psmouse);
1140 }
1141
1142
1143
1144
1145
1146
1147 if (max_proto > PSMOUSE_IMEX &&
1148 psmouse_try_protocol(psmouse, PSMOUSE_CYPRESS, &max_proto,
1149 set_properties, true)) {
1150 return PSMOUSE_CYPRESS;
1151 }
1152
1153
1154 if (max_proto > PSMOUSE_IMEX) {
1155 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1156 if (psmouse_try_protocol(psmouse, PSMOUSE_ALPS,
1157 &max_proto, set_properties, true))
1158 return PSMOUSE_ALPS;
1159 }
1160
1161
1162 if (max_proto > PSMOUSE_IMEX &&
1163 psmouse_try_protocol(psmouse, PSMOUSE_HGPK, &max_proto,
1164 set_properties, true)) {
1165 return PSMOUSE_HGPK;
1166 }
1167
1168
1169 if (max_proto > PSMOUSE_IMEX &&
1170 psmouse_try_protocol(psmouse, PSMOUSE_ELANTECH,
1171 &max_proto, set_properties, false)) {
1172 if (!set_properties)
1173 return PSMOUSE_ELANTECH;
1174
1175 ret = elantech_init(psmouse);
1176 if (ret >= 0)
1177 return ret;
1178 }
1179
1180 if (max_proto > PSMOUSE_IMEX) {
1181 if (psmouse_try_protocol(psmouse, PSMOUSE_GENPS,
1182 &max_proto, set_properties, true))
1183 return PSMOUSE_GENPS;
1184
1185 if (psmouse_try_protocol(psmouse, PSMOUSE_PS2PP,
1186 &max_proto, set_properties, true))
1187 return PSMOUSE_PS2PP;
1188
1189 if (psmouse_try_protocol(psmouse, PSMOUSE_TRACKPOINT,
1190 &max_proto, set_properties, true))
1191 return PSMOUSE_TRACKPOINT;
1192
1193 if (psmouse_try_protocol(psmouse, PSMOUSE_TOUCHKIT_PS2,
1194 &max_proto, set_properties, true))
1195 return PSMOUSE_TOUCHKIT_PS2;
1196 }
1197
1198
1199
1200
1201
1202 if (max_proto > PSMOUSE_IMEX &&
1203 psmouse_try_protocol(psmouse, PSMOUSE_FSP,
1204 &max_proto, set_properties, true)) {
1205 return PSMOUSE_FSP;
1206 }
1207
1208
1209
1210
1211
1212
1213 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1214 psmouse_reset(psmouse);
1215
1216 if (max_proto >= PSMOUSE_IMEX &&
1217 psmouse_try_protocol(psmouse, PSMOUSE_IMEX,
1218 &max_proto, set_properties, true)) {
1219 return PSMOUSE_IMEX;
1220 }
1221
1222 if (max_proto >= PSMOUSE_IMPS &&
1223 psmouse_try_protocol(psmouse, PSMOUSE_IMPS,
1224 &max_proto, set_properties, true)) {
1225 return PSMOUSE_IMPS;
1226 }
1227
1228
1229
1230
1231
1232 psmouse_try_protocol(psmouse, PSMOUSE_PS2,
1233 &max_proto, set_properties, true);
1234
1235 if (synaptics_hardware) {
1236
1237
1238
1239
1240
1241
1242 psmouse_reset(psmouse);
1243 }
1244
1245 return PSMOUSE_PS2;
1246}
1247
1248
1249
1250
1251static int psmouse_probe(struct psmouse *psmouse)
1252{
1253 struct ps2dev *ps2dev = &psmouse->ps2dev;
1254 u8 param[2];
1255 int error;
1256
1257
1258
1259
1260
1261
1262
1263 param[0] = 0xa5;
1264 error = ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
1265 if (error)
1266 return error;
1267
1268 if (param[0] != 0x00 && param[0] != 0x03 &&
1269 param[0] != 0x04 && param[0] != 0xff)
1270 return -ENODEV;
1271
1272
1273
1274
1275
1276 error = ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1277 if (error)
1278 psmouse_warn(psmouse, "Failed to reset mouse on %s: %d\n",
1279 ps2dev->serio->phys, error);
1280
1281 return 0;
1282}
1283
1284
1285
1286
1287static void psmouse_initialize(struct psmouse *psmouse)
1288{
1289
1290
1291
1292 if (psmouse_max_proto != PSMOUSE_PS2) {
1293 psmouse->set_rate(psmouse, psmouse->rate);
1294 psmouse->set_resolution(psmouse, psmouse->resolution);
1295 psmouse->set_scale(psmouse, PSMOUSE_SCALE11);
1296 }
1297}
1298
1299
1300
1301
1302int psmouse_activate(struct psmouse *psmouse)
1303{
1304 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1305 psmouse_warn(psmouse, "Failed to enable mouse on %s\n",
1306 psmouse->ps2dev.serio->phys);
1307 return -1;
1308 }
1309
1310 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1311 return 0;
1312}
1313
1314
1315
1316
1317
1318int psmouse_deactivate(struct psmouse *psmouse)
1319{
1320 int error;
1321
1322 error = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE);
1323 if (error) {
1324 psmouse_warn(psmouse, "Failed to deactivate mouse on %s: %d\n",
1325 psmouse->ps2dev.serio->phys, error);
1326 return error;
1327 }
1328
1329 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1330 return 0;
1331}
1332
1333
1334
1335
1336static void psmouse_resync(struct work_struct *work)
1337{
1338 struct psmouse *parent = NULL, *psmouse =
1339 container_of(work, struct psmouse, resync_work.work);
1340 struct serio *serio = psmouse->ps2dev.serio;
1341 psmouse_ret_t rc = PSMOUSE_GOOD_DATA;
1342 bool failed = false, enabled = false;
1343 int i;
1344
1345 mutex_lock(&psmouse_mutex);
1346
1347 if (psmouse->state != PSMOUSE_RESYNCING)
1348 goto out;
1349
1350 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1351 parent = serio_get_drvdata(serio->parent);
1352 psmouse_deactivate(parent);
1353 }
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365 psmouse->num_resyncs++;
1366
1367 if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) {
1368 if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command)
1369 failed = true;
1370 } else
1371 psmouse->acks_disable_command = true;
1372
1373
1374
1375
1376
1377
1378
1379
1380 if (!failed) {
1381 if (psmouse->poll(psmouse))
1382 failed = true;
1383 else {
1384 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1385 for (i = 0; i < psmouse->pktsize; i++) {
1386 psmouse->pktcnt++;
1387 rc = psmouse->protocol_handler(psmouse);
1388 if (rc != PSMOUSE_GOOD_DATA)
1389 break;
1390 }
1391 if (rc != PSMOUSE_FULL_PACKET)
1392 failed = true;
1393 psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
1394 }
1395 }
1396
1397
1398
1399
1400
1401
1402 for (i = 0; i < 5; i++) {
1403 if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1404 enabled = true;
1405 break;
1406 }
1407 msleep(200);
1408 }
1409
1410 if (!enabled) {
1411 psmouse_warn(psmouse, "failed to re-enable mouse on %s\n",
1412 psmouse->ps2dev.serio->phys);
1413 failed = true;
1414 }
1415
1416 if (failed) {
1417 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1418 psmouse_info(psmouse,
1419 "resync failed, issuing reconnect request\n");
1420 serio_reconnect(serio);
1421 } else
1422 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1423
1424 if (parent)
1425 psmouse_activate(parent);
1426 out:
1427 mutex_unlock(&psmouse_mutex);
1428}
1429
1430
1431
1432
1433static void psmouse_cleanup(struct serio *serio)
1434{
1435 struct psmouse *psmouse = serio_get_drvdata(serio);
1436 struct psmouse *parent = NULL;
1437
1438 mutex_lock(&psmouse_mutex);
1439
1440 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1441 parent = serio_get_drvdata(serio->parent);
1442 psmouse_deactivate(parent);
1443 }
1444
1445 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1446
1447
1448
1449
1450 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1451 psmouse_warn(psmouse, "Failed to disable mouse on %s\n",
1452 psmouse->ps2dev.serio->phys);
1453
1454 if (psmouse->cleanup)
1455 psmouse->cleanup(psmouse);
1456
1457
1458
1459
1460 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1461
1462
1463
1464
1465
1466 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1467
1468 if (parent) {
1469 if (parent->pt_deactivate)
1470 parent->pt_deactivate(parent);
1471
1472 psmouse_activate(parent);
1473 }
1474
1475 mutex_unlock(&psmouse_mutex);
1476}
1477
1478
1479
1480
1481static void psmouse_disconnect(struct serio *serio)
1482{
1483 struct psmouse *psmouse = serio_get_drvdata(serio);
1484 struct psmouse *parent = NULL;
1485
1486 sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group);
1487
1488 mutex_lock(&psmouse_mutex);
1489
1490 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1491
1492
1493 mutex_unlock(&psmouse_mutex);
1494 flush_workqueue(kpsmoused_wq);
1495 mutex_lock(&psmouse_mutex);
1496
1497 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1498 parent = serio_get_drvdata(serio->parent);
1499 psmouse_deactivate(parent);
1500 }
1501
1502 if (psmouse->disconnect)
1503 psmouse->disconnect(psmouse);
1504
1505 if (parent && parent->pt_deactivate)
1506 parent->pt_deactivate(parent);
1507
1508 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1509
1510 serio_close(serio);
1511 serio_set_drvdata(serio, NULL);
1512
1513 if (psmouse->dev)
1514 input_unregister_device(psmouse->dev);
1515
1516 kfree(psmouse);
1517
1518 if (parent)
1519 psmouse_activate(parent);
1520
1521 mutex_unlock(&psmouse_mutex);
1522}
1523
1524static int psmouse_switch_protocol(struct psmouse *psmouse,
1525 const struct psmouse_protocol *proto)
1526{
1527 const struct psmouse_protocol *selected_proto;
1528 struct input_dev *input_dev = psmouse->dev;
1529 enum psmouse_type type;
1530
1531 input_dev->dev.parent = &psmouse->ps2dev.serio->dev;
1532
1533 if (proto && (proto->detect || proto->init)) {
1534 psmouse_apply_defaults(psmouse);
1535
1536 if (proto->detect && proto->detect(psmouse, true) < 0)
1537 return -1;
1538
1539 if (proto->init && proto->init(psmouse) < 0)
1540 return -1;
1541
1542 selected_proto = proto;
1543 } else {
1544 type = psmouse_extensions(psmouse, psmouse_max_proto, true);
1545 selected_proto = psmouse_protocol_by_type(type);
1546 }
1547
1548 psmouse->protocol = selected_proto;
1549
1550
1551
1552
1553
1554
1555 if (psmouse->pktsize == 3)
1556 psmouse->resync_time = 0;
1557
1558
1559
1560
1561
1562
1563
1564 if (psmouse->resync_time && psmouse->poll(psmouse))
1565 psmouse->resync_time = 0;
1566
1567 snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s",
1568 selected_proto->name, psmouse->vendor, psmouse->name);
1569
1570 input_dev->name = psmouse->devname;
1571 input_dev->phys = psmouse->phys;
1572 input_dev->id.bustype = BUS_I8042;
1573 input_dev->id.vendor = 0x0002;
1574 input_dev->id.product = psmouse->protocol->type;
1575 input_dev->id.version = psmouse->model;
1576
1577 return 0;
1578}
1579
1580
1581
1582
1583
1584static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
1585{
1586 struct psmouse *psmouse, *parent = NULL;
1587 struct input_dev *input_dev;
1588 int retval = 0, error = -ENOMEM;
1589
1590 mutex_lock(&psmouse_mutex);
1591
1592
1593
1594
1595
1596 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1597 parent = serio_get_drvdata(serio->parent);
1598 psmouse_deactivate(parent);
1599 }
1600
1601 psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
1602 input_dev = input_allocate_device();
1603 if (!psmouse || !input_dev)
1604 goto err_free;
1605
1606 ps2_init(&psmouse->ps2dev, serio);
1607 INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync);
1608 psmouse->dev = input_dev;
1609 snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
1610
1611 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1612
1613 serio_set_drvdata(serio, psmouse);
1614
1615 error = serio_open(serio, drv);
1616 if (error)
1617 goto err_clear_drvdata;
1618
1619
1620 if (serio->id.type == SERIO_PS_PSTHRU)
1621 usleep_range(10000, 15000);
1622
1623 if (psmouse_probe(psmouse) < 0) {
1624 error = -ENODEV;
1625 goto err_close_serio;
1626 }
1627
1628 psmouse->rate = psmouse_rate;
1629 psmouse->resolution = psmouse_resolution;
1630 psmouse->resetafter = psmouse_resetafter;
1631 psmouse->resync_time = parent ? 0 : psmouse_resync_time;
1632 psmouse->smartscroll = psmouse_smartscroll;
1633
1634 psmouse_switch_protocol(psmouse, NULL);
1635
1636 if (!psmouse->protocol->smbus_companion) {
1637 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1638 psmouse_initialize(psmouse);
1639
1640 error = input_register_device(input_dev);
1641 if (error)
1642 goto err_protocol_disconnect;
1643 } else {
1644
1645 input_free_device(input_dev);
1646 psmouse->dev = input_dev = NULL;
1647 }
1648
1649 if (parent && parent->pt_activate)
1650 parent->pt_activate(parent);
1651
1652 error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
1653 if (error)
1654 goto err_pt_deactivate;
1655
1656
1657
1658
1659
1660 if (!psmouse->protocol->smbus_companion)
1661 psmouse_activate(psmouse);
1662
1663 out:
1664
1665 if (parent)
1666 psmouse_activate(parent);
1667
1668 mutex_unlock(&psmouse_mutex);
1669 return retval;
1670
1671 err_pt_deactivate:
1672 if (parent && parent->pt_deactivate)
1673 parent->pt_deactivate(parent);
1674 if (input_dev) {
1675 input_unregister_device(input_dev);
1676 input_dev = NULL;
1677 }
1678 err_protocol_disconnect:
1679 if (psmouse->disconnect)
1680 psmouse->disconnect(psmouse);
1681 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1682 err_close_serio:
1683 serio_close(serio);
1684 err_clear_drvdata:
1685 serio_set_drvdata(serio, NULL);
1686 err_free:
1687 input_free_device(input_dev);
1688 kfree(psmouse);
1689
1690 retval = error;
1691 goto out;
1692}
1693
1694static int __psmouse_reconnect(struct serio *serio, bool fast_reconnect)
1695{
1696 struct psmouse *psmouse = serio_get_drvdata(serio);
1697 struct psmouse *parent = NULL;
1698 int (*reconnect_handler)(struct psmouse *);
1699 enum psmouse_type type;
1700 int rc = -1;
1701
1702 mutex_lock(&psmouse_mutex);
1703
1704 if (fast_reconnect) {
1705 reconnect_handler = psmouse->fast_reconnect;
1706 if (!reconnect_handler) {
1707 rc = -ENOENT;
1708 goto out_unlock;
1709 }
1710 } else {
1711 reconnect_handler = psmouse->reconnect;
1712 }
1713
1714 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1715 parent = serio_get_drvdata(serio->parent);
1716 psmouse_deactivate(parent);
1717 }
1718
1719 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1720
1721 if (reconnect_handler) {
1722 if (reconnect_handler(psmouse))
1723 goto out;
1724 } else {
1725 psmouse_reset(psmouse);
1726
1727 if (psmouse_probe(psmouse) < 0)
1728 goto out;
1729
1730 type = psmouse_extensions(psmouse, psmouse_max_proto, false);
1731 if (psmouse->protocol->type != type)
1732 goto out;
1733 }
1734
1735
1736
1737
1738
1739 if (!psmouse->protocol->smbus_companion) {
1740 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1741 psmouse_initialize(psmouse);
1742 }
1743
1744 if (parent && parent->pt_activate)
1745 parent->pt_activate(parent);
1746
1747
1748
1749
1750
1751 if (!psmouse->protocol->smbus_companion)
1752 psmouse_activate(psmouse);
1753
1754 rc = 0;
1755
1756out:
1757
1758 if (parent)
1759 psmouse_activate(parent);
1760
1761out_unlock:
1762 mutex_unlock(&psmouse_mutex);
1763 return rc;
1764}
1765
1766static int psmouse_reconnect(struct serio *serio)
1767{
1768 return __psmouse_reconnect(serio, false);
1769}
1770
1771static int psmouse_fast_reconnect(struct serio *serio)
1772{
1773 return __psmouse_reconnect(serio, true);
1774}
1775
1776static struct serio_device_id psmouse_serio_ids[] = {
1777 {
1778 .type = SERIO_8042,
1779 .proto = SERIO_ANY,
1780 .id = SERIO_ANY,
1781 .extra = SERIO_ANY,
1782 },
1783 {
1784 .type = SERIO_PS_PSTHRU,
1785 .proto = SERIO_ANY,
1786 .id = SERIO_ANY,
1787 .extra = SERIO_ANY,
1788 },
1789 { 0 }
1790};
1791
1792MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1793
1794static struct serio_driver psmouse_drv = {
1795 .driver = {
1796 .name = "psmouse",
1797 },
1798 .description = DRIVER_DESC,
1799 .id_table = psmouse_serio_ids,
1800 .interrupt = psmouse_interrupt,
1801 .connect = psmouse_connect,
1802 .reconnect = psmouse_reconnect,
1803 .fast_reconnect = psmouse_fast_reconnect,
1804 .disconnect = psmouse_disconnect,
1805 .cleanup = psmouse_cleanup,
1806};
1807
1808ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr,
1809 char *buf)
1810{
1811 struct serio *serio = to_serio_port(dev);
1812 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1813 struct psmouse *psmouse = serio_get_drvdata(serio);
1814
1815 if (psmouse->protocol->smbus_companion &&
1816 devattr != &psmouse_attr_protocol.dattr)
1817 return -ENOENT;
1818
1819 return attr->show(psmouse, attr->data, buf);
1820}
1821
1822ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr,
1823 const char *buf, size_t count)
1824{
1825 struct serio *serio = to_serio_port(dev);
1826 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1827 struct psmouse *psmouse, *parent = NULL;
1828 int retval;
1829
1830 retval = mutex_lock_interruptible(&psmouse_mutex);
1831 if (retval)
1832 goto out;
1833
1834 psmouse = serio_get_drvdata(serio);
1835
1836 if (psmouse->protocol->smbus_companion &&
1837 devattr != &psmouse_attr_protocol.dattr) {
1838 retval = -ENOENT;
1839 goto out_unlock;
1840 }
1841
1842 if (attr->protect) {
1843 if (psmouse->state == PSMOUSE_IGNORE) {
1844 retval = -ENODEV;
1845 goto out_unlock;
1846 }
1847
1848 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1849 parent = serio_get_drvdata(serio->parent);
1850 psmouse_deactivate(parent);
1851 }
1852
1853 if (!psmouse->protocol->smbus_companion)
1854 psmouse_deactivate(psmouse);
1855 }
1856
1857 retval = attr->set(psmouse, attr->data, buf, count);
1858
1859 if (attr->protect) {
1860 if (retval != -ENODEV && !psmouse->protocol->smbus_companion)
1861 psmouse_activate(psmouse);
1862
1863 if (parent)
1864 psmouse_activate(parent);
1865 }
1866
1867 out_unlock:
1868 mutex_unlock(&psmouse_mutex);
1869 out:
1870 return retval;
1871}
1872
1873static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
1874{
1875 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
1876
1877 return sprintf(buf, "%u\n", *field);
1878}
1879
1880static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
1881{
1882 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
1883 unsigned int value;
1884 int err;
1885
1886 err = kstrtouint(buf, 10, &value);
1887 if (err)
1888 return err;
1889
1890 *field = value;
1891
1892 return count;
1893}
1894
1895static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf)
1896{
1897 return sprintf(buf, "%s\n", psmouse->protocol->name);
1898}
1899
1900static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1901{
1902 struct serio *serio = psmouse->ps2dev.serio;
1903 struct psmouse *parent = NULL;
1904 struct input_dev *old_dev, *new_dev;
1905 const struct psmouse_protocol *proto, *old_proto;
1906 int error;
1907 int retry = 0;
1908
1909 proto = psmouse_protocol_by_name(buf, count);
1910 if (!proto)
1911 return -EINVAL;
1912
1913 if (psmouse->protocol == proto)
1914 return count;
1915
1916 new_dev = input_allocate_device();
1917 if (!new_dev)
1918 return -ENOMEM;
1919
1920 while (!list_empty(&serio->children)) {
1921 if (++retry > 3) {
1922 psmouse_warn(psmouse,
1923 "failed to destroy children ports, protocol change aborted.\n");
1924 input_free_device(new_dev);
1925 return -EIO;
1926 }
1927
1928 mutex_unlock(&psmouse_mutex);
1929 serio_unregister_child_port(serio);
1930 mutex_lock(&psmouse_mutex);
1931
1932 if (serio->drv != &psmouse_drv) {
1933 input_free_device(new_dev);
1934 return -ENODEV;
1935 }
1936
1937 if (psmouse->protocol == proto) {
1938 input_free_device(new_dev);
1939 return count;
1940 }
1941 }
1942
1943 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1944 parent = serio_get_drvdata(serio->parent);
1945 if (parent->pt_deactivate)
1946 parent->pt_deactivate(parent);
1947 }
1948
1949 old_dev = psmouse->dev;
1950 old_proto = psmouse->protocol;
1951
1952 if (psmouse->disconnect)
1953 psmouse->disconnect(psmouse);
1954
1955 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1956
1957 psmouse->dev = new_dev;
1958 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1959
1960 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1961 psmouse_reset(psmouse);
1962
1963 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1964 }
1965
1966 psmouse_initialize(psmouse);
1967 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1968
1969 if (psmouse->protocol->smbus_companion) {
1970 input_free_device(psmouse->dev);
1971 psmouse->dev = NULL;
1972 } else {
1973 error = input_register_device(psmouse->dev);
1974 if (error) {
1975 if (psmouse->disconnect)
1976 psmouse->disconnect(psmouse);
1977
1978 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1979 input_free_device(new_dev);
1980 psmouse->dev = old_dev;
1981 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1982 psmouse_switch_protocol(psmouse, old_proto);
1983 psmouse_initialize(psmouse);
1984 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1985
1986 return error;
1987 }
1988 }
1989
1990 if (old_dev)
1991 input_unregister_device(old_dev);
1992
1993 if (parent && parent->pt_activate)
1994 parent->pt_activate(parent);
1995
1996 return count;
1997}
1998
1999static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
2000{
2001 unsigned int value;
2002 int err;
2003
2004 err = kstrtouint(buf, 10, &value);
2005 if (err)
2006 return err;
2007
2008 psmouse->set_rate(psmouse, value);
2009 return count;
2010}
2011
2012static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
2013{
2014 unsigned int value;
2015 int err;
2016
2017 err = kstrtouint(buf, 10, &value);
2018 if (err)
2019 return err;
2020
2021 psmouse->set_resolution(psmouse, value);
2022 return count;
2023}
2024
2025
2026static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp)
2027{
2028 const struct psmouse_protocol *proto;
2029
2030 if (!val)
2031 return -EINVAL;
2032
2033 proto = psmouse_protocol_by_name(val, strlen(val));
2034
2035 if (!proto || !proto->maxproto)
2036 return -EINVAL;
2037
2038 *((unsigned int *)kp->arg) = proto->type;
2039
2040 return 0;
2041}
2042
2043static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp)
2044{
2045 int type = *((unsigned int *)kp->arg);
2046
2047 return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name);
2048}
2049
2050static int __init psmouse_init(void)
2051{
2052 int err;
2053
2054 lifebook_module_init();
2055 synaptics_module_init();
2056 hgpk_module_init();
2057
2058 err = psmouse_smbus_module_init();
2059 if (err)
2060 return err;
2061
2062 kpsmoused_wq = alloc_ordered_workqueue("kpsmoused", 0);
2063 if (!kpsmoused_wq) {
2064 pr_err("failed to create kpsmoused workqueue\n");
2065 err = -ENOMEM;
2066 goto err_smbus_exit;
2067 }
2068
2069 err = serio_register_driver(&psmouse_drv);
2070 if (err)
2071 goto err_destroy_wq;
2072
2073 return 0;
2074
2075err_destroy_wq:
2076 destroy_workqueue(kpsmoused_wq);
2077err_smbus_exit:
2078 psmouse_smbus_module_exit();
2079 return err;
2080}
2081
2082static void __exit psmouse_exit(void)
2083{
2084 serio_unregister_driver(&psmouse_drv);
2085 destroy_workqueue(kpsmoused_wq);
2086 psmouse_smbus_module_exit();
2087}
2088
2089module_init(psmouse_init);
2090module_exit(psmouse_exit);
2091