4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 * Copyright (c) 2003-2004 Dmitry Torokhov
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.
14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15 #define psmouse_fmt(fmt) fmt
17 #include <linux/delay.h>
18 #include <linux/module.h>
19 #include <linux/slab.h>
20 #include <linux/interrupt.h>
21 #include <linux/input.h>
22 #include <linux/serio.h>
23 #include <linux/init.h>
24 #include <linux/libps2.h>
25 #include <linux/mutex.h>
28 #include "synaptics.h"
29 #include "logips2pp.h"
33 #include "trackpoint.h"
34 #include "touchkit_ps2.h"
38 #define DRIVER_DESC "PS/2 mouse driver"
40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
41 MODULE_DESCRIPTION(DRIVER_DESC);
42 MODULE_LICENSE("GPL");
44 static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
45 static int psmouse_set_maxproto(const char *val, const struct kernel_param *);
46 static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp);
47 static struct kernel_param_ops param_ops_proto_abbrev = {
48 .set = psmouse_set_maxproto,
49 .get = psmouse_get_maxproto,
51 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
52 module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
53 MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
55 static unsigned int psmouse_resolution = 200;
56 module_param_named(resolution, psmouse_resolution, uint, 0644);
57 MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
59 static unsigned int psmouse_rate = 100;
60 module_param_named(rate, psmouse_rate, uint, 0644);
61 MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
63 static unsigned int psmouse_smartscroll = 1;
64 module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
65 MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
67 static unsigned int psmouse_resetafter = 5;
68 module_param_named(resetafter, psmouse_resetafter, uint, 0644);
69 MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
71 static unsigned int psmouse_resync_time;
72 module_param_named(resync_time, psmouse_resync_time, uint, 0644);
73 MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
75 PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO,
77 psmouse_attr_show_protocol, psmouse_attr_set_protocol);
78 PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
79 (void *) offsetof(struct psmouse, rate),
80 psmouse_show_int_attr, psmouse_attr_set_rate);
81 PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
82 (void *) offsetof(struct psmouse, resolution),
83 psmouse_show_int_attr, psmouse_attr_set_resolution);
84 PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
85 (void *) offsetof(struct psmouse, resetafter),
86 psmouse_show_int_attr, psmouse_set_int_attr);
87 PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO,
88 (void *) offsetof(struct psmouse, resync_time),
89 psmouse_show_int_attr, psmouse_set_int_attr);
91 static struct attribute *psmouse_attributes[] = {
92 &psmouse_attr_protocol.dattr.attr,
93 &psmouse_attr_rate.dattr.attr,
94 &psmouse_attr_resolution.dattr.attr,
95 &psmouse_attr_resetafter.dattr.attr,
96 &psmouse_attr_resync_time.dattr.attr,
100 static struct attribute_group psmouse_attribute_group = {
101 .attrs = psmouse_attributes,
105 * psmouse_mutex protects all operations changing state of mouse
106 * (connecting, disconnecting, changing rate or resolution via
107 * sysfs). We could use a per-device semaphore but since there
108 * rarely more than one PS/2 mouse connected and since semaphore
109 * is taken in "slow" paths it is not worth it.
111 static DEFINE_MUTEX(psmouse_mutex);
113 static struct workqueue_struct *kpsmoused_wq;
115 struct psmouse_protocol {
116 enum psmouse_type type;
118 bool ignore_parity; /* Protocol should ignore parity errors from KBC */
121 int (*detect)(struct psmouse *, bool);
122 int (*init)(struct psmouse *);
126 * psmouse_process_byte() analyzes the PS/2 data stream and reports
127 * relevant events to the input module once full packet has arrived.
130 psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
132 struct input_dev *dev = psmouse->dev;
133 unsigned char *packet = psmouse->packet;
135 if (psmouse->pktcnt < psmouse->pktsize)
136 return PSMOUSE_GOOD_DATA;
139 * Full packet accumulated, process it
143 * Scroll wheel on IntelliMice, scroll buttons on NetMice
146 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
147 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
150 * Scroll wheel and buttons on IntelliMouse Explorer
153 if (psmouse->type == PSMOUSE_IMEX) {
154 switch (packet[3] & 0xC0) {
155 case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
156 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
158 case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
159 input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
163 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
164 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
165 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
171 * Extra buttons on Genius NewNet 3D
174 if (psmouse->type == PSMOUSE_GENPS) {
175 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
176 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
180 * Extra button on ThinkingMouse
182 if (psmouse->type == PSMOUSE_THINKPS) {
183 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
184 /* Without this bit of weirdness moving up gives wildly high Y changes. */
185 packet[1] |= (packet[0] & 0x40) << 1;
189 * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first
192 if (psmouse->type == PSMOUSE_CORTRON) {
193 input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1);
201 input_report_key(dev, BTN_LEFT, packet[0] & 1);
202 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
203 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
205 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
206 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
210 return PSMOUSE_FULL_PACKET;
213 void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work,
216 queue_delayed_work(kpsmoused_wq, work, delay);
220 * __psmouse_set_state() sets new psmouse state and resets all flags.
223 static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
225 psmouse->state = new_state;
226 psmouse->pktcnt = psmouse->out_of_sync_cnt = 0;
227 psmouse->ps2dev.flags = 0;
228 psmouse->last = jiffies;
233 * psmouse_set_state() sets new psmouse state and resets all flags and
234 * counters while holding serio lock so fighting with interrupt handler
238 void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
240 serio_pause_rx(psmouse->ps2dev.serio);
241 __psmouse_set_state(psmouse, new_state);
242 serio_continue_rx(psmouse->ps2dev.serio);
246 * psmouse_handle_byte() processes one byte of the input data stream
247 * by calling corresponding protocol handler.
250 static int psmouse_handle_byte(struct psmouse *psmouse)
252 psmouse_ret_t rc = psmouse->protocol_handler(psmouse);
255 case PSMOUSE_BAD_DATA:
256 if (psmouse->state == PSMOUSE_ACTIVATED) {
257 psmouse_warn(psmouse,
258 "%s at %s lost sync at byte %d\n",
259 psmouse->name, psmouse->phys,
261 if (++psmouse->out_of_sync_cnt == psmouse->resetafter) {
262 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
263 psmouse_notice(psmouse,
264 "issuing reconnect request\n");
265 serio_reconnect(psmouse->ps2dev.serio);
272 case PSMOUSE_FULL_PACKET:
274 if (psmouse->out_of_sync_cnt) {
275 psmouse->out_of_sync_cnt = 0;
276 psmouse_notice(psmouse,
277 "%s at %s - driver resynced.\n",
278 psmouse->name, psmouse->phys);
282 case PSMOUSE_GOOD_DATA:
289 * psmouse_interrupt() handles incoming characters, either passing them
290 * for normal processing or gathering them as command response.
293 static irqreturn_t psmouse_interrupt(struct serio *serio,
294 unsigned char data, unsigned int flags)
296 struct psmouse *psmouse = serio_get_drvdata(serio);
298 if (psmouse->state == PSMOUSE_IGNORE)
301 if (unlikely((flags & SERIO_TIMEOUT) ||
302 ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) {
304 if (psmouse->state == PSMOUSE_ACTIVATED)
305 psmouse_warn(psmouse,
306 "bad data from KBC -%s%s\n",
307 flags & SERIO_TIMEOUT ? " timeout" : "",
308 flags & SERIO_PARITY ? " bad parity" : "");
309 ps2_cmd_aborted(&psmouse->ps2dev);
313 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
314 if (ps2_handle_ack(&psmouse->ps2dev, data))
317 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
318 if (ps2_handle_response(&psmouse->ps2dev, data))
321 if (psmouse->state <= PSMOUSE_RESYNCING)
324 if (psmouse->state == PSMOUSE_ACTIVATED &&
325 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
326 psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n",
327 psmouse->name, psmouse->phys, psmouse->pktcnt);
328 psmouse->badbyte = psmouse->packet[0];
329 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
330 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
334 psmouse->packet[psmouse->pktcnt++] = data;
336 * Check if this is a new device announcement (0xAA 0x00)
338 if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
339 if (psmouse->pktcnt == 1) {
340 psmouse->last = jiffies;
344 if (psmouse->packet[1] == PSMOUSE_RET_ID ||
345 (psmouse->type == PSMOUSE_HGPK &&
346 psmouse->packet[1] == PSMOUSE_RET_BAT)) {
347 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
348 serio_reconnect(serio);
352 * Not a new device, try processing first byte normally
355 if (psmouse_handle_byte(psmouse))
358 psmouse->packet[psmouse->pktcnt++] = data;
362 * See if we need to force resync because mouse was idle for too long
364 if (psmouse->state == PSMOUSE_ACTIVATED &&
365 psmouse->pktcnt == 1 && psmouse->resync_time &&
366 time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) {
367 psmouse->badbyte = psmouse->packet[0];
368 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
369 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
373 psmouse->last = jiffies;
374 psmouse_handle_byte(psmouse);
382 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
383 * using sliced syntax, understood by advanced devices, such as Logitech
384 * or Synaptics touchpads. The command is encoded as:
385 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
388 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
392 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
395 for (i = 6; i >= 0; i -= 2) {
396 unsigned char d = (command >> i) & 3;
397 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
406 * psmouse_reset() resets the mouse into power-on state.
408 int psmouse_reset(struct psmouse *psmouse)
410 unsigned char param[2];
412 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
415 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
423 * Genius NetMouse magic init.
425 static int genius_detect(struct psmouse *psmouse, bool set_properties)
427 struct ps2dev *ps2dev = &psmouse->ps2dev;
428 unsigned char param[4];
431 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
432 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
433 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
434 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
435 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
437 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
440 if (set_properties) {
441 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
442 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
443 __set_bit(BTN_SIDE, psmouse->dev->keybit);
444 __set_bit(REL_WHEEL, psmouse->dev->relbit);
446 psmouse->vendor = "Genius";
447 psmouse->name = "Mouse";
448 psmouse->pktsize = 4;
455 * IntelliMouse magic init.
457 static int intellimouse_detect(struct psmouse *psmouse, bool set_properties)
459 struct ps2dev *ps2dev = &psmouse->ps2dev;
460 unsigned char param[2];
463 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
465 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
467 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
468 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
473 if (set_properties) {
474 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
475 __set_bit(REL_WHEEL, psmouse->dev->relbit);
477 if (!psmouse->vendor)
478 psmouse->vendor = "Generic";
480 psmouse->name = "Wheel Mouse";
481 psmouse->pktsize = 4;
488 * Try IntelliMouse/Explorer magic init.
490 static int im_explorer_detect(struct psmouse *psmouse, bool set_properties)
492 struct ps2dev *ps2dev = &psmouse->ps2dev;
493 unsigned char param[2];
495 intellimouse_detect(psmouse, 0);
498 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
500 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
502 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
503 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
508 /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
510 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
512 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
514 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
516 if (set_properties) {
517 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
518 __set_bit(REL_WHEEL, psmouse->dev->relbit);
519 __set_bit(REL_HWHEEL, psmouse->dev->relbit);
520 __set_bit(BTN_SIDE, psmouse->dev->keybit);
521 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
523 if (!psmouse->vendor)
524 psmouse->vendor = "Generic";
526 psmouse->name = "Explorer Mouse";
527 psmouse->pktsize = 4;
534 * Kensington ThinkingMouse / ExpertMouse magic init.
536 static int thinking_detect(struct psmouse *psmouse, bool set_properties)
538 struct ps2dev *ps2dev = &psmouse->ps2dev;
539 unsigned char param[2];
540 static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
544 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
546 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
547 for (i = 0; i < ARRAY_SIZE(seq); i++) {
549 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
551 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
556 if (set_properties) {
557 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
558 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
560 psmouse->vendor = "Kensington";
561 psmouse->name = "ThinkingMouse";
568 * Bare PS/2 protocol "detection". Always succeeds.
570 static int ps2bare_detect(struct psmouse *psmouse, bool set_properties)
572 if (set_properties) {
573 if (!psmouse->vendor)
574 psmouse->vendor = "Generic";
576 psmouse->name = "Mouse";
579 * We have no way of figuring true number of buttons so let's
580 * assume that the device has 3.
582 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
589 * Cortron PS/2 protocol detection. There's no special way to detect it, so it
590 * must be forced by sysfs protocol writing.
592 static int cortron_detect(struct psmouse *psmouse, bool set_properties)
594 if (set_properties) {
595 psmouse->vendor = "Cortron";
596 psmouse->name = "PS/2 Trackball";
598 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
599 __set_bit(BTN_SIDE, psmouse->dev->keybit);
606 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
607 * the mouse may have.
610 static int psmouse_extensions(struct psmouse *psmouse,
611 unsigned int max_proto, bool set_properties)
613 bool synaptics_hardware = false;
616 * We always check for lifebook because it does not disturb mouse
617 * (it only checks DMI information).
619 if (lifebook_detect(psmouse, set_properties) == 0) {
620 if (max_proto > PSMOUSE_IMEX) {
621 if (!set_properties || lifebook_init(psmouse) == 0)
622 return PSMOUSE_LIFEBOOK;
627 * Try Kensington ThinkingMouse (we try first, because synaptics probe
628 * upsets the thinkingmouse).
631 if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0)
632 return PSMOUSE_THINKPS;
635 * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol
636 * support is disabled in config - we need to know if it is synaptics so we
637 * can reset it properly after probing for intellimouse.
639 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
640 synaptics_hardware = true;
642 if (max_proto > PSMOUSE_IMEX) {
644 * Try activating protocol, but check if support is enabled first, since
645 * we try detecting Synaptics even when protocol is disabled.
647 if (synaptics_supported() &&
648 (!set_properties || synaptics_init(psmouse) == 0)) {
649 return PSMOUSE_SYNAPTICS;
653 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
654 * Unfortunately Logitech/Genius probes confuse some firmware versions so
655 * we'll have to skip them.
657 max_proto = PSMOUSE_IMEX;
660 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
662 synaptics_reset(psmouse);
668 if (max_proto > PSMOUSE_IMEX) {
669 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
670 if (alps_detect(psmouse, set_properties) == 0) {
671 if (!set_properties || alps_init(psmouse) == 0)
674 * Init failed, try basic relative protocols
676 max_proto = PSMOUSE_IMEX;
681 * Try OLPC HGPK touchpad.
683 if (max_proto > PSMOUSE_IMEX &&
684 hgpk_detect(psmouse, set_properties) == 0) {
685 if (!set_properties || hgpk_init(psmouse) == 0)
688 * Init failed, try basic relative protocols
690 max_proto = PSMOUSE_IMEX;
694 * Try Elantech touchpad.
696 if (max_proto > PSMOUSE_IMEX &&
697 elantech_detect(psmouse, set_properties) == 0) {
698 if (!set_properties || elantech_init(psmouse) == 0)
699 return PSMOUSE_ELANTECH;
701 * Init failed, try basic relative protocols
703 max_proto = PSMOUSE_IMEX;
707 if (max_proto > PSMOUSE_IMEX) {
708 if (genius_detect(psmouse, set_properties) == 0)
709 return PSMOUSE_GENPS;
711 if (ps2pp_init(psmouse, set_properties) == 0)
712 return PSMOUSE_PS2PP;
714 if (trackpoint_detect(psmouse, set_properties) == 0)
715 return PSMOUSE_TRACKPOINT;
717 if (touchkit_ps2_detect(psmouse, set_properties) == 0)
718 return PSMOUSE_TOUCHKIT_PS2;
722 * Try Finger Sensing Pad. We do it here because its probe upsets
723 * Trackpoint devices (causing TP_READ_ID command to time out).
725 if (max_proto > PSMOUSE_IMEX) {
726 if (fsp_detect(psmouse, set_properties) == 0) {
727 if (!set_properties || fsp_init(psmouse) == 0)
730 * Init failed, try basic relative protocols
732 max_proto = PSMOUSE_IMEX;
737 * Reset to defaults in case the device got confused by extended
738 * protocol probes. Note that we follow up with full reset because
739 * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
741 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
742 psmouse_reset(psmouse);
744 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
747 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
751 * Okay, all failed, we have a standard mouse here. The number of the buttons
752 * is still a question, though. We assume 3.
754 ps2bare_detect(psmouse, set_properties);
756 if (synaptics_hardware) {
758 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
759 * We need to reset the touchpad because if there is a track point on the
760 * pass through port it could get disabled while probing for protocol
763 psmouse_reset(psmouse);
769 static const struct psmouse_protocol psmouse_protocols[] = {
775 .ignore_parity = true,
776 .detect = ps2bare_detect,
778 #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
780 .type = PSMOUSE_PS2PP,
783 .detect = ps2pp_init,
787 .type = PSMOUSE_THINKPS,
790 .detect = thinking_detect,
793 .type = PSMOUSE_GENPS,
796 .detect = genius_detect,
799 .type = PSMOUSE_IMPS,
803 .ignore_parity = true,
804 .detect = intellimouse_detect,
807 .type = PSMOUSE_IMEX,
811 .ignore_parity = true,
812 .detect = im_explorer_detect,
814 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
816 .type = PSMOUSE_SYNAPTICS,
818 .alias = "synaptics",
819 .detect = synaptics_detect,
820 .init = synaptics_init,
823 .type = PSMOUSE_SYNAPTICS_RELATIVE,
824 .name = "SynRelPS/2",
825 .alias = "synaptics-relative",
826 .detect = synaptics_detect,
827 .init = synaptics_init_relative,
830 #ifdef CONFIG_MOUSE_PS2_ALPS
832 .type = PSMOUSE_ALPS,
835 .detect = alps_detect,
839 #ifdef CONFIG_MOUSE_PS2_LIFEBOOK
841 .type = PSMOUSE_LIFEBOOK,
844 .init = lifebook_init,
847 #ifdef CONFIG_MOUSE_PS2_TRACKPOINT
849 .type = PSMOUSE_TRACKPOINT,
851 .alias = "trackpoint",
852 .detect = trackpoint_detect,
855 #ifdef CONFIG_MOUSE_PS2_TOUCHKIT
857 .type = PSMOUSE_TOUCHKIT_PS2,
858 .name = "touchkitPS/2",
860 .detect = touchkit_ps2_detect,
863 #ifdef CONFIG_MOUSE_PS2_OLPC
865 .type = PSMOUSE_HGPK,
868 .detect = hgpk_detect,
871 #ifdef CONFIG_MOUSE_PS2_ELANTECH
873 .type = PSMOUSE_ELANTECH,
876 .detect = elantech_detect,
877 .init = elantech_init,
880 #ifdef CONFIG_MOUSE_PS2_SENTELIC
885 .detect = fsp_detect,
890 .type = PSMOUSE_CORTRON,
891 .name = "CortronPS/2",
893 .detect = cortron_detect,
896 .type = PSMOUSE_AUTO,
903 static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
907 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
908 if (psmouse_protocols[i].type == type)
909 return &psmouse_protocols[i];
912 return &psmouse_protocols[0];
915 static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
917 const struct psmouse_protocol *p;
920 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
921 p = &psmouse_protocols[i];
923 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
924 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
925 return &psmouse_protocols[i];
933 * psmouse_probe() probes for a PS/2 mouse.
936 static int psmouse_probe(struct psmouse *psmouse)
938 struct ps2dev *ps2dev = &psmouse->ps2dev;
939 unsigned char param[2];
942 * First, we check if it's a mouse. It should send 0x00 or 0x03
943 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
944 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
945 * ID queries, probably due to a firmware bug.
949 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
952 if (param[0] != 0x00 && param[0] != 0x03 &&
953 param[0] != 0x04 && param[0] != 0xff)
957 * Then we reset and disable the mouse so that it doesn't generate events.
960 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
961 psmouse_warn(psmouse, "Failed to reset mouse on %s\n",
962 ps2dev->serio->phys);
968 * Here we set the mouse resolution.
971 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
973 static const unsigned char params[] = { 0, 1, 2, 2, 3 };
976 if (resolution == 0 || resolution > 200)
979 p = params[resolution / 50];
980 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
981 psmouse->resolution = 25 << p;
985 * Here we set the mouse report rate.
988 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
990 static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
994 while (rates[i] > rate) i++;
996 ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE);
1001 * psmouse_initialize() initializes the mouse to a sane state.
1004 static void psmouse_initialize(struct psmouse *psmouse)
1007 * We set the mouse report rate, resolution and scaling.
1010 if (psmouse_max_proto != PSMOUSE_PS2) {
1011 psmouse->set_rate(psmouse, psmouse->rate);
1012 psmouse->set_resolution(psmouse, psmouse->resolution);
1013 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
1018 * psmouse_activate() enables the mouse so that we get motion reports from it.
1021 static void psmouse_activate(struct psmouse *psmouse)
1023 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1024 psmouse_warn(psmouse, "Failed to enable mouse on %s\n",
1025 psmouse->ps2dev.serio->phys);
1027 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1032 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
1033 * reports from it unless we explicitly request it.
1036 static void psmouse_deactivate(struct psmouse *psmouse)
1038 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1039 psmouse_warn(psmouse, "Failed to deactivate mouse on %s\n",
1040 psmouse->ps2dev.serio->phys);
1042 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1046 * psmouse_poll() - default poll handler. Everyone except for ALPS uses it.
1049 static int psmouse_poll(struct psmouse *psmouse)
1051 return ps2_command(&psmouse->ps2dev, psmouse->packet,
1052 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8));
1057 * psmouse_resync() attempts to re-validate current protocol.
1060 static void psmouse_resync(struct work_struct *work)
1062 struct psmouse *parent = NULL, *psmouse =
1063 container_of(work, struct psmouse, resync_work.work);
1064 struct serio *serio = psmouse->ps2dev.serio;
1065 psmouse_ret_t rc = PSMOUSE_GOOD_DATA;
1066 bool failed = false, enabled = false;
1069 mutex_lock(&psmouse_mutex);
1071 if (psmouse->state != PSMOUSE_RESYNCING)
1074 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1075 parent = serio_get_drvdata(serio->parent);
1076 psmouse_deactivate(parent);
1080 * Some mice don't ACK commands sent while they are in the middle of
1081 * transmitting motion packet. To avoid delay we use ps2_sendbyte()
1082 * instead of ps2_command() which would wait for 200ms for an ACK
1083 * that may never come.
1084 * As an additional quirk ALPS touchpads may not only forget to ACK
1085 * disable command but will stop reporting taps, so if we see that
1086 * mouse at least once ACKs disable we will do full reconnect if ACK
1089 psmouse->num_resyncs++;
1091 if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) {
1092 if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command)
1095 psmouse->acks_disable_command = true;
1098 * Poll the mouse. If it was reset the packet will be shorter than
1099 * psmouse->pktsize and ps2_command will fail. We do not expect and
1100 * do not handle scenario when mouse "upgrades" its protocol while
1101 * disconnected since it would require additional delay. If we ever
1102 * see a mouse that does it we'll adjust the code.
1105 if (psmouse->poll(psmouse))
1108 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1109 for (i = 0; i < psmouse->pktsize; i++) {
1111 rc = psmouse->protocol_handler(psmouse);
1112 if (rc != PSMOUSE_GOOD_DATA)
1115 if (rc != PSMOUSE_FULL_PACKET)
1117 psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
1121 * Now try to enable mouse. We try to do that even if poll failed and also
1122 * repeat our attempts 5 times, otherwise we may be left out with disabled
1125 for (i = 0; i < 5; i++) {
1126 if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1134 psmouse_warn(psmouse, "failed to re-enable mouse on %s\n",
1135 psmouse->ps2dev.serio->phys);
1140 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1141 psmouse_info(psmouse,
1142 "resync failed, issuing reconnect request\n");
1143 serio_reconnect(serio);
1145 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1148 psmouse_activate(parent);
1150 mutex_unlock(&psmouse_mutex);
1154 * psmouse_cleanup() resets the mouse into power-on state.
1157 static void psmouse_cleanup(struct serio *serio)
1159 struct psmouse *psmouse = serio_get_drvdata(serio);
1160 struct psmouse *parent = NULL;
1162 mutex_lock(&psmouse_mutex);
1164 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1165 parent = serio_get_drvdata(serio->parent);
1166 psmouse_deactivate(parent);
1169 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1172 * Disable stream mode so cleanup routine can proceed undisturbed.
1174 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1175 psmouse_warn(psmouse, "Failed to disable mouse on %s\n",
1176 psmouse->ps2dev.serio->phys);
1178 if (psmouse->cleanup)
1179 psmouse->cleanup(psmouse);
1182 * Reset the mouse to defaults (bare PS/2 protocol).
1184 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1187 * Some boxes, such as HP nx7400, get terribly confused if mouse
1188 * is not fully enabled before suspending/shutting down.
1190 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1193 if (parent->pt_deactivate)
1194 parent->pt_deactivate(parent);
1196 psmouse_activate(parent);
1199 mutex_unlock(&psmouse_mutex);
1203 * psmouse_disconnect() closes and frees.
1206 static void psmouse_disconnect(struct serio *serio)
1208 struct psmouse *psmouse, *parent = NULL;
1210 psmouse = serio_get_drvdata(serio);
1212 sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group);
1214 mutex_lock(&psmouse_mutex);
1216 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1218 /* make sure we don't have a resync in progress */
1219 mutex_unlock(&psmouse_mutex);
1220 flush_workqueue(kpsmoused_wq);
1221 mutex_lock(&psmouse_mutex);
1223 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1224 parent = serio_get_drvdata(serio->parent);
1225 psmouse_deactivate(parent);
1228 if (psmouse->disconnect)
1229 psmouse->disconnect(psmouse);
1231 if (parent && parent->pt_deactivate)
1232 parent->pt_deactivate(parent);
1234 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1237 serio_set_drvdata(serio, NULL);
1238 input_unregister_device(psmouse->dev);
1242 psmouse_activate(parent);
1244 mutex_unlock(&psmouse_mutex);
1247 static int psmouse_switch_protocol(struct psmouse *psmouse,
1248 const struct psmouse_protocol *proto)
1250 const struct psmouse_protocol *selected_proto;
1251 struct input_dev *input_dev = psmouse->dev;
1253 input_dev->dev.parent = &psmouse->ps2dev.serio->dev;
1255 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1256 input_dev->keybit[BIT_WORD(BTN_MOUSE)] =
1257 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1258 input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1260 psmouse->set_rate = psmouse_set_rate;
1261 psmouse->set_resolution = psmouse_set_resolution;
1262 psmouse->poll = psmouse_poll;
1263 psmouse->protocol_handler = psmouse_process_byte;
1264 psmouse->pktsize = 3;
1266 if (proto && (proto->detect || proto->init)) {
1267 if (proto->detect && proto->detect(psmouse, true) < 0)
1270 if (proto->init && proto->init(psmouse) < 0)
1273 psmouse->type = proto->type;
1274 selected_proto = proto;
1276 psmouse->type = psmouse_extensions(psmouse,
1277 psmouse_max_proto, true);
1278 selected_proto = psmouse_protocol_by_type(psmouse->type);
1281 psmouse->ignore_parity = selected_proto->ignore_parity;
1284 * If mouse's packet size is 3 there is no point in polling the
1285 * device in hopes to detect protocol reset - we won't get less
1286 * than 3 bytes response anyhow.
1288 if (psmouse->pktsize == 3)
1289 psmouse->resync_time = 0;
1292 * Some smart KVMs fake response to POLL command returning just
1293 * 3 bytes and messing up our resync logic, so if initial poll
1294 * fails we won't try polling the device anymore. Hopefully
1295 * such KVM will maintain initially selected protocol.
1297 if (psmouse->resync_time && psmouse->poll(psmouse))
1298 psmouse->resync_time = 0;
1300 snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s",
1301 selected_proto->name, psmouse->vendor, psmouse->name);
1303 input_dev->name = psmouse->devname;
1304 input_dev->phys = psmouse->phys;
1305 input_dev->id.bustype = BUS_I8042;
1306 input_dev->id.vendor = 0x0002;
1307 input_dev->id.product = psmouse->type;
1308 input_dev->id.version = psmouse->model;
1314 * psmouse_connect() is a callback from the serio module when
1315 * an unhandled serio port is found.
1317 static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
1319 struct psmouse *psmouse, *parent = NULL;
1320 struct input_dev *input_dev;
1321 int retval = 0, error = -ENOMEM;
1323 mutex_lock(&psmouse_mutex);
1326 * If this is a pass-through port deactivate parent so the device
1327 * connected to this port can be successfully identified
1329 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1330 parent = serio_get_drvdata(serio->parent);
1331 psmouse_deactivate(parent);
1334 psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
1335 input_dev = input_allocate_device();
1336 if (!psmouse || !input_dev)
1339 ps2_init(&psmouse->ps2dev, serio);
1340 INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync);
1341 psmouse->dev = input_dev;
1342 snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
1344 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1346 serio_set_drvdata(serio, psmouse);
1348 error = serio_open(serio, drv);
1350 goto err_clear_drvdata;
1352 if (psmouse_probe(psmouse) < 0) {
1354 goto err_close_serio;
1357 psmouse->rate = psmouse_rate;
1358 psmouse->resolution = psmouse_resolution;
1359 psmouse->resetafter = psmouse_resetafter;
1360 psmouse->resync_time = parent ? 0 : psmouse_resync_time;
1361 psmouse->smartscroll = psmouse_smartscroll;
1363 psmouse_switch_protocol(psmouse, NULL);
1365 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1366 psmouse_initialize(psmouse);
1368 error = input_register_device(psmouse->dev);
1370 goto err_protocol_disconnect;
1372 if (parent && parent->pt_activate)
1373 parent->pt_activate(parent);
1375 error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
1377 goto err_pt_deactivate;
1379 psmouse_activate(psmouse);
1382 /* If this is a pass-through port the parent needs to be re-activated */
1384 psmouse_activate(parent);
1386 mutex_unlock(&psmouse_mutex);
1390 if (parent && parent->pt_deactivate)
1391 parent->pt_deactivate(parent);
1392 input_unregister_device(psmouse->dev);
1393 input_dev = NULL; /* so we don't try to free it below */
1394 err_protocol_disconnect:
1395 if (psmouse->disconnect)
1396 psmouse->disconnect(psmouse);
1397 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1401 serio_set_drvdata(serio, NULL);
1403 input_free_device(input_dev);
1411 static int psmouse_reconnect(struct serio *serio)
1413 struct psmouse *psmouse = serio_get_drvdata(serio);
1414 struct psmouse *parent = NULL;
1415 struct serio_driver *drv = serio->drv;
1419 if (!drv || !psmouse) {
1420 psmouse_dbg(psmouse,
1421 "reconnect request, but serio is disconnected, ignoring...\n");
1425 mutex_lock(&psmouse_mutex);
1427 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1428 parent = serio_get_drvdata(serio->parent);
1429 psmouse_deactivate(parent);
1432 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1434 if (psmouse->reconnect) {
1435 if (psmouse->reconnect(psmouse))
1438 psmouse_reset(psmouse);
1440 if (psmouse_probe(psmouse) < 0)
1443 type = psmouse_extensions(psmouse, psmouse_max_proto, false);
1444 if (psmouse->type != type)
1449 * OK, the device type (and capabilities) match the old one,
1450 * we can continue using it, complete initialization
1452 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1454 psmouse_initialize(psmouse);
1456 if (parent && parent->pt_activate)
1457 parent->pt_activate(parent);
1459 psmouse_activate(psmouse);
1463 /* If this is a pass-through port the parent waits to be activated */
1465 psmouse_activate(parent);
1467 mutex_unlock(&psmouse_mutex);
1471 static struct serio_device_id psmouse_serio_ids[] = {
1479 .type = SERIO_PS_PSTHRU,
1487 MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1489 static struct serio_driver psmouse_drv = {
1493 .description = DRIVER_DESC,
1494 .id_table = psmouse_serio_ids,
1495 .interrupt = psmouse_interrupt,
1496 .connect = psmouse_connect,
1497 .reconnect = psmouse_reconnect,
1498 .disconnect = psmouse_disconnect,
1499 .cleanup = psmouse_cleanup,
1502 ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr,
1505 struct serio *serio = to_serio_port(dev);
1506 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1507 struct psmouse *psmouse;
1509 psmouse = serio_get_drvdata(serio);
1511 return attr->show(psmouse, attr->data, buf);
1514 ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr,
1515 const char *buf, size_t count)
1517 struct serio *serio = to_serio_port(dev);
1518 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1519 struct psmouse *psmouse, *parent = NULL;
1522 retval = mutex_lock_interruptible(&psmouse_mutex);
1526 psmouse = serio_get_drvdata(serio);
1528 if (attr->protect) {
1529 if (psmouse->state == PSMOUSE_IGNORE) {
1534 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1535 parent = serio_get_drvdata(serio->parent);
1536 psmouse_deactivate(parent);
1539 psmouse_deactivate(psmouse);
1542 retval = attr->set(psmouse, attr->data, buf, count);
1544 if (attr->protect) {
1545 if (retval != -ENODEV)
1546 psmouse_activate(psmouse);
1549 psmouse_activate(parent);
1553 mutex_unlock(&psmouse_mutex);
1558 static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
1560 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
1562 return sprintf(buf, "%u\n", *field);
1565 static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
1567 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
1571 err = kstrtouint(buf, 10, &value);
1580 static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf)
1582 return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
1585 static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1587 struct serio *serio = psmouse->ps2dev.serio;
1588 struct psmouse *parent = NULL;
1589 struct input_dev *old_dev, *new_dev;
1590 const struct psmouse_protocol *proto, *old_proto;
1594 proto = psmouse_protocol_by_name(buf, count);
1598 if (psmouse->type == proto->type)
1601 new_dev = input_allocate_device();
1605 while (!list_empty(&serio->children)) {
1607 psmouse_warn(psmouse,
1608 "failed to destroy children ports, protocol change aborted.\n");
1609 input_free_device(new_dev);
1613 mutex_unlock(&psmouse_mutex);
1614 serio_unregister_child_port(serio);
1615 mutex_lock(&psmouse_mutex);
1617 if (serio->drv != &psmouse_drv) {
1618 input_free_device(new_dev);
1622 if (psmouse->type == proto->type) {
1623 input_free_device(new_dev);
1624 return count; /* switched by other thread */
1628 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1629 parent = serio_get_drvdata(serio->parent);
1630 if (parent->pt_deactivate)
1631 parent->pt_deactivate(parent);
1634 old_dev = psmouse->dev;
1635 old_proto = psmouse_protocol_by_type(psmouse->type);
1637 if (psmouse->disconnect)
1638 psmouse->disconnect(psmouse);
1640 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1642 psmouse->dev = new_dev;
1643 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1645 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1646 psmouse_reset(psmouse);
1647 /* default to PSMOUSE_PS2 */
1648 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1651 psmouse_initialize(psmouse);
1652 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1654 error = input_register_device(psmouse->dev);
1656 if (psmouse->disconnect)
1657 psmouse->disconnect(psmouse);
1659 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1660 input_free_device(new_dev);
1661 psmouse->dev = old_dev;
1662 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1663 psmouse_switch_protocol(psmouse, old_proto);
1664 psmouse_initialize(psmouse);
1665 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1670 input_unregister_device(old_dev);
1672 if (parent && parent->pt_activate)
1673 parent->pt_activate(parent);
1678 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1683 err = kstrtouint(buf, 10, &value);
1687 psmouse->set_rate(psmouse, value);
1691 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1696 err = kstrtouint(buf, 10, &value);
1700 psmouse->set_resolution(psmouse, value);
1705 static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp)
1707 const struct psmouse_protocol *proto;
1712 proto = psmouse_protocol_by_name(val, strlen(val));
1714 if (!proto || !proto->maxproto)
1717 *((unsigned int *)kp->arg) = proto->type;
1722 static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp)
1724 int type = *((unsigned int *)kp->arg);
1726 return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name);
1729 static int __init psmouse_init(void)
1733 lifebook_module_init();
1734 synaptics_module_init();
1737 kpsmoused_wq = create_singlethread_workqueue("kpsmoused");
1738 if (!kpsmoused_wq) {
1739 pr_err("failed to create kpsmoused workqueue\n");
1743 err = serio_register_driver(&psmouse_drv);
1745 destroy_workqueue(kpsmoused_wq);
1750 static void __exit psmouse_exit(void)
1752 serio_unregister_driver(&psmouse_drv);
1753 destroy_workqueue(kpsmoused_wq);
1756 module_init(psmouse_init);
1757 module_exit(psmouse_exit);