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 #include <linux/delay.h>
15 #include <linux/module.h>
16 #include <linux/slab.h>
17 #include <linux/interrupt.h>
18 #include <linux/input.h>
19 #include <linux/serio.h>
20 #include <linux/init.h>
21 #include <linux/libps2.h>
22 #include <linux/mutex.h>
25 #include "synaptics.h"
26 #include "logips2pp.h"
30 #include "trackpoint.h"
31 #include "touchkit_ps2.h"
35 #define DRIVER_DESC "PS/2 mouse driver"
37 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
38 MODULE_DESCRIPTION(DRIVER_DESC);
39 MODULE_LICENSE("GPL");
41 static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
42 static int psmouse_set_maxproto(const char *val, const struct kernel_param *);
43 static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp);
44 static struct kernel_param_ops param_ops_proto_abbrev = {
45 .set = psmouse_set_maxproto,
46 .get = psmouse_get_maxproto,
48 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
49 module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
50 MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
52 static unsigned int psmouse_resolution = 200;
53 module_param_named(resolution, psmouse_resolution, uint, 0644);
54 MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
56 static unsigned int psmouse_rate = 100;
57 module_param_named(rate, psmouse_rate, uint, 0644);
58 MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
60 static unsigned int psmouse_smartscroll = 1;
61 module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
62 MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
64 static unsigned int psmouse_resetafter = 5;
65 module_param_named(resetafter, psmouse_resetafter, uint, 0644);
66 MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
68 static unsigned int psmouse_resync_time;
69 module_param_named(resync_time, psmouse_resync_time, uint, 0644);
70 MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
72 PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO,
74 psmouse_attr_show_protocol, psmouse_attr_set_protocol);
75 PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
76 (void *) offsetof(struct psmouse, rate),
77 psmouse_show_int_attr, psmouse_attr_set_rate);
78 PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
79 (void *) offsetof(struct psmouse, resolution),
80 psmouse_show_int_attr, psmouse_attr_set_resolution);
81 PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
82 (void *) offsetof(struct psmouse, resetafter),
83 psmouse_show_int_attr, psmouse_set_int_attr);
84 PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO,
85 (void *) offsetof(struct psmouse, resync_time),
86 psmouse_show_int_attr, psmouse_set_int_attr);
88 static struct attribute *psmouse_attributes[] = {
89 &psmouse_attr_protocol.dattr.attr,
90 &psmouse_attr_rate.dattr.attr,
91 &psmouse_attr_resolution.dattr.attr,
92 &psmouse_attr_resetafter.dattr.attr,
93 &psmouse_attr_resync_time.dattr.attr,
97 static struct attribute_group psmouse_attribute_group = {
98 .attrs = psmouse_attributes,
102 * psmouse_mutex protects all operations changing state of mouse
103 * (connecting, disconnecting, changing rate or resolution via
104 * sysfs). We could use a per-device semaphore but since there
105 * rarely more than one PS/2 mouse connected and since semaphore
106 * is taken in "slow" paths it is not worth it.
108 static DEFINE_MUTEX(psmouse_mutex);
110 static struct workqueue_struct *kpsmoused_wq;
112 struct psmouse_protocol {
113 enum psmouse_type type;
115 bool ignore_parity; /* Protocol should ignore parity errors from KBC */
118 int (*detect)(struct psmouse *, bool);
119 int (*init)(struct psmouse *);
123 * psmouse_process_byte() analyzes the PS/2 data stream and reports
124 * relevant events to the input module once full packet has arrived.
127 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
129 struct input_dev *dev = psmouse->dev;
130 unsigned char *packet = psmouse->packet;
132 if (psmouse->pktcnt < psmouse->pktsize)
133 return PSMOUSE_GOOD_DATA;
136 * Full packet accumulated, process it
140 * Scroll wheel on IntelliMice, scroll buttons on NetMice
143 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
144 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
147 * Scroll wheel and buttons on IntelliMouse Explorer
150 if (psmouse->type == PSMOUSE_IMEX) {
151 switch (packet[3] & 0xC0) {
152 case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
153 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
155 case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
156 input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
160 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
161 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
162 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
168 * Extra buttons on Genius NewNet 3D
171 if (psmouse->type == PSMOUSE_GENPS) {
172 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
173 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
177 * Extra button on ThinkingMouse
179 if (psmouse->type == PSMOUSE_THINKPS) {
180 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
181 /* Without this bit of weirdness moving up gives wildly high Y changes. */
182 packet[1] |= (packet[0] & 0x40) << 1;
186 * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first
189 if (psmouse->type == PSMOUSE_CORTRON) {
190 input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1);
198 input_report_key(dev, BTN_LEFT, packet[0] & 1);
199 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
200 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
202 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
203 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
207 return PSMOUSE_FULL_PACKET;
210 void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work,
213 queue_delayed_work(kpsmoused_wq, work, delay);
217 * __psmouse_set_state() sets new psmouse state and resets all flags.
220 static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
222 psmouse->state = new_state;
223 psmouse->pktcnt = psmouse->out_of_sync_cnt = 0;
224 psmouse->ps2dev.flags = 0;
225 psmouse->last = jiffies;
230 * psmouse_set_state() sets new psmouse state and resets all flags and
231 * counters while holding serio lock so fighting with interrupt handler
235 void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
237 serio_pause_rx(psmouse->ps2dev.serio);
238 __psmouse_set_state(psmouse, new_state);
239 serio_continue_rx(psmouse->ps2dev.serio);
243 * psmouse_handle_byte() processes one byte of the input data stream
244 * by calling corresponding protocol handler.
247 static int psmouse_handle_byte(struct psmouse *psmouse)
249 psmouse_ret_t rc = psmouse->protocol_handler(psmouse);
252 case PSMOUSE_BAD_DATA:
253 if (psmouse->state == PSMOUSE_ACTIVATED) {
254 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
255 psmouse->name, psmouse->phys, psmouse->pktcnt);
256 if (++psmouse->out_of_sync_cnt == psmouse->resetafter) {
257 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
258 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
259 serio_reconnect(psmouse->ps2dev.serio);
266 case PSMOUSE_FULL_PACKET:
268 if (psmouse->out_of_sync_cnt) {
269 psmouse->out_of_sync_cnt = 0;
270 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
271 psmouse->name, psmouse->phys);
275 case PSMOUSE_GOOD_DATA:
282 * psmouse_interrupt() handles incoming characters, either passing them
283 * for normal processing or gathering them as command response.
286 static irqreturn_t psmouse_interrupt(struct serio *serio,
287 unsigned char data, unsigned int flags)
289 struct psmouse *psmouse = serio_get_drvdata(serio);
291 if (psmouse->state == PSMOUSE_IGNORE)
294 if (unlikely((flags & SERIO_TIMEOUT) ||
295 ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) {
297 if (psmouse->state == PSMOUSE_ACTIVATED)
298 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
299 flags & SERIO_TIMEOUT ? " timeout" : "",
300 flags & SERIO_PARITY ? " bad parity" : "");
301 ps2_cmd_aborted(&psmouse->ps2dev);
305 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
306 if (ps2_handle_ack(&psmouse->ps2dev, data))
309 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
310 if (ps2_handle_response(&psmouse->ps2dev, data))
313 if (psmouse->state <= PSMOUSE_RESYNCING)
316 if (psmouse->state == PSMOUSE_ACTIVATED &&
317 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
318 printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
319 psmouse->name, psmouse->phys, psmouse->pktcnt);
320 psmouse->badbyte = psmouse->packet[0];
321 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
322 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
326 psmouse->packet[psmouse->pktcnt++] = data;
328 * Check if this is a new device announcement (0xAA 0x00)
330 if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
331 if (psmouse->pktcnt == 1) {
332 psmouse->last = jiffies;
336 if (psmouse->packet[1] == PSMOUSE_RET_ID ||
337 (psmouse->type == PSMOUSE_HGPK &&
338 psmouse->packet[1] == PSMOUSE_RET_BAT)) {
339 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
340 serio_reconnect(serio);
344 * Not a new device, try processing first byte normally
347 if (psmouse_handle_byte(psmouse))
350 psmouse->packet[psmouse->pktcnt++] = data;
354 * See if we need to force resync because mouse was idle for too long
356 if (psmouse->state == PSMOUSE_ACTIVATED &&
357 psmouse->pktcnt == 1 && psmouse->resync_time &&
358 time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) {
359 psmouse->badbyte = psmouse->packet[0];
360 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
361 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
365 psmouse->last = jiffies;
366 psmouse_handle_byte(psmouse);
374 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
375 * using sliced syntax, understood by advanced devices, such as Logitech
376 * or Synaptics touchpads. The command is encoded as:
377 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
380 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
384 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
387 for (i = 6; i >= 0; i -= 2) {
388 unsigned char d = (command >> i) & 3;
389 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
398 * psmouse_reset() resets the mouse into power-on state.
400 int psmouse_reset(struct psmouse *psmouse)
402 unsigned char param[2];
404 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
407 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
415 * Genius NetMouse magic init.
417 static int genius_detect(struct psmouse *psmouse, bool set_properties)
419 struct ps2dev *ps2dev = &psmouse->ps2dev;
420 unsigned char param[4];
423 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
424 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
425 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
426 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
427 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
429 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
432 if (set_properties) {
433 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
434 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
435 __set_bit(BTN_SIDE, psmouse->dev->keybit);
436 __set_bit(REL_WHEEL, psmouse->dev->relbit);
438 psmouse->vendor = "Genius";
439 psmouse->name = "Mouse";
440 psmouse->pktsize = 4;
447 * IntelliMouse magic init.
449 static int intellimouse_detect(struct psmouse *psmouse, bool set_properties)
451 struct ps2dev *ps2dev = &psmouse->ps2dev;
452 unsigned char param[2];
455 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
457 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
459 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
460 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
465 if (set_properties) {
466 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
467 __set_bit(REL_WHEEL, psmouse->dev->relbit);
469 if (!psmouse->vendor)
470 psmouse->vendor = "Generic";
472 psmouse->name = "Wheel Mouse";
473 psmouse->pktsize = 4;
480 * Try IntelliMouse/Explorer magic init.
482 static int im_explorer_detect(struct psmouse *psmouse, bool set_properties)
484 struct ps2dev *ps2dev = &psmouse->ps2dev;
485 unsigned char param[2];
487 intellimouse_detect(psmouse, 0);
490 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
492 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
494 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
495 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
500 /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
502 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
504 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
506 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
508 if (set_properties) {
509 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
510 __set_bit(REL_WHEEL, psmouse->dev->relbit);
511 __set_bit(REL_HWHEEL, psmouse->dev->relbit);
512 __set_bit(BTN_SIDE, psmouse->dev->keybit);
513 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
515 if (!psmouse->vendor)
516 psmouse->vendor = "Generic";
518 psmouse->name = "Explorer Mouse";
519 psmouse->pktsize = 4;
526 * Kensington ThinkingMouse / ExpertMouse magic init.
528 static int thinking_detect(struct psmouse *psmouse, bool set_properties)
530 struct ps2dev *ps2dev = &psmouse->ps2dev;
531 unsigned char param[2];
532 static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
536 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
538 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
539 for (i = 0; i < ARRAY_SIZE(seq); i++) {
541 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
543 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
548 if (set_properties) {
549 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
550 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
552 psmouse->vendor = "Kensington";
553 psmouse->name = "ThinkingMouse";
560 * Bare PS/2 protocol "detection". Always succeeds.
562 static int ps2bare_detect(struct psmouse *psmouse, bool set_properties)
564 if (set_properties) {
565 if (!psmouse->vendor)
566 psmouse->vendor = "Generic";
568 psmouse->name = "Mouse";
571 * We have no way of figuring true number of buttons so let's
572 * assume that the device has 3.
574 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
581 * Cortron PS/2 protocol detection. There's no special way to detect it, so it
582 * must be forced by sysfs protocol writing.
584 static int cortron_detect(struct psmouse *psmouse, bool set_properties)
586 if (set_properties) {
587 psmouse->vendor = "Cortron";
588 psmouse->name = "PS/2 Trackball";
590 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
591 __set_bit(BTN_SIDE, psmouse->dev->keybit);
598 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
599 * the mouse may have.
602 static int psmouse_extensions(struct psmouse *psmouse,
603 unsigned int max_proto, bool set_properties)
605 bool synaptics_hardware = false;
608 * We always check for lifebook because it does not disturb mouse
609 * (it only checks DMI information).
611 if (lifebook_detect(psmouse, set_properties) == 0) {
612 if (max_proto > PSMOUSE_IMEX) {
613 if (!set_properties || lifebook_init(psmouse) == 0)
614 return PSMOUSE_LIFEBOOK;
619 * Try Kensington ThinkingMouse (we try first, because synaptics probe
620 * upsets the thinkingmouse).
623 if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0)
624 return PSMOUSE_THINKPS;
627 * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol
628 * support is disabled in config - we need to know if it is synaptics so we
629 * can reset it properly after probing for intellimouse.
631 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
632 synaptics_hardware = true;
634 if (max_proto > PSMOUSE_IMEX) {
636 * Try activating protocol, but check if support is enabled first, since
637 * we try detecting Synaptics even when protocol is disabled.
639 if (synaptics_supported() &&
640 (!set_properties || synaptics_init(psmouse) == 0)) {
641 return PSMOUSE_SYNAPTICS;
645 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
646 * Unfortunately Logitech/Genius probes confuse some firmware versions so
647 * we'll have to skip them.
649 max_proto = PSMOUSE_IMEX;
652 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
654 synaptics_reset(psmouse);
660 if (max_proto > PSMOUSE_IMEX) {
661 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
662 if (alps_detect(psmouse, set_properties) == 0) {
663 if (!set_properties || alps_init(psmouse) == 0)
664 /* If ALPS model quirk was applied, don't change the settings */
665 return psmouse->type ? psmouse->type : PSMOUSE_ALPS;
667 * Init failed, try basic relative protocols
669 max_proto = PSMOUSE_IMEX;
674 * Try OLPC HGPK touchpad.
676 if (max_proto > PSMOUSE_IMEX &&
677 hgpk_detect(psmouse, set_properties) == 0) {
678 if (!set_properties || hgpk_init(psmouse) == 0)
681 * Init failed, try basic relative protocols
683 max_proto = PSMOUSE_IMEX;
687 * Try Elantech touchpad.
689 if (max_proto > PSMOUSE_IMEX &&
690 elantech_detect(psmouse, set_properties) == 0) {
691 if (!set_properties || elantech_init(psmouse) == 0)
692 return PSMOUSE_ELANTECH;
694 * Init failed, try basic relative protocols
696 max_proto = PSMOUSE_IMEX;
700 if (max_proto > PSMOUSE_IMEX) {
701 if (genius_detect(psmouse, set_properties) == 0)
702 return PSMOUSE_GENPS;
704 if (ps2pp_init(psmouse, set_properties) == 0)
705 return PSMOUSE_PS2PP;
707 if (trackpoint_detect(psmouse, set_properties) == 0)
708 return PSMOUSE_TRACKPOINT;
710 if (touchkit_ps2_detect(psmouse, set_properties) == 0)
711 return PSMOUSE_TOUCHKIT_PS2;
715 * Try Finger Sensing Pad. We do it here because its probe upsets
716 * Trackpoint devices (causing TP_READ_ID command to time out).
718 if (max_proto > PSMOUSE_IMEX) {
719 if (fsp_detect(psmouse, set_properties) == 0) {
720 if (!set_properties || fsp_init(psmouse) == 0)
723 * Init failed, try basic relative protocols
725 max_proto = PSMOUSE_IMEX;
730 * Reset to defaults in case the device got confused by extended
731 * protocol probes. Note that we follow up with full reset because
732 * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
734 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
735 psmouse_reset(psmouse);
737 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
740 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
744 * Okay, all failed, we have a standard mouse here. The number of the buttons
745 * is still a question, though. We assume 3.
747 ps2bare_detect(psmouse, set_properties);
749 if (synaptics_hardware) {
751 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
752 * We need to reset the touchpad because if there is a track point on the
753 * pass through port it could get disabled while probing for protocol
756 psmouse_reset(psmouse);
762 static const struct psmouse_protocol psmouse_protocols[] = {
768 .ignore_parity = true,
769 .detect = ps2bare_detect,
771 #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
773 .type = PSMOUSE_PS2PP,
776 .detect = ps2pp_init,
780 .type = PSMOUSE_THINKPS,
783 .detect = thinking_detect,
786 .type = PSMOUSE_GENPS,
789 .detect = genius_detect,
792 .type = PSMOUSE_IMPS,
796 .ignore_parity = true,
797 .detect = intellimouse_detect,
800 .type = PSMOUSE_IMEX,
804 .ignore_parity = true,
805 .detect = im_explorer_detect,
807 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
809 .type = PSMOUSE_SYNAPTICS,
811 .alias = "synaptics",
812 .detect = synaptics_detect,
813 .init = synaptics_init,
816 #ifdef CONFIG_MOUSE_PS2_ALPS
818 .type = PSMOUSE_ALPS,
821 .detect = alps_detect,
825 #ifdef CONFIG_MOUSE_PS2_LIFEBOOK
827 .type = PSMOUSE_LIFEBOOK,
830 .init = lifebook_init,
833 #ifdef CONFIG_MOUSE_PS2_TRACKPOINT
835 .type = PSMOUSE_TRACKPOINT,
837 .alias = "trackpoint",
838 .detect = trackpoint_detect,
841 #ifdef CONFIG_MOUSE_PS2_TOUCHKIT
843 .type = PSMOUSE_TOUCHKIT_PS2,
844 .name = "touchkitPS/2",
846 .detect = touchkit_ps2_detect,
849 #ifdef CONFIG_MOUSE_PS2_OLPC
851 .type = PSMOUSE_HGPK,
854 .detect = hgpk_detect,
857 #ifdef CONFIG_MOUSE_PS2_ELANTECH
859 .type = PSMOUSE_ELANTECH,
862 .detect = elantech_detect,
863 .init = elantech_init,
866 #ifdef CONFIG_MOUSE_PS2_SENTELIC
871 .detect = fsp_detect,
876 .type = PSMOUSE_CORTRON,
877 .name = "CortronPS/2",
879 .detect = cortron_detect,
882 .type = PSMOUSE_AUTO,
889 static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
893 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
894 if (psmouse_protocols[i].type == type)
895 return &psmouse_protocols[i];
898 return &psmouse_protocols[0];
901 static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
903 const struct psmouse_protocol *p;
906 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
907 p = &psmouse_protocols[i];
909 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
910 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
911 return &psmouse_protocols[i];
919 * psmouse_probe() probes for a PS/2 mouse.
922 static int psmouse_probe(struct psmouse *psmouse)
924 struct ps2dev *ps2dev = &psmouse->ps2dev;
925 unsigned char param[2];
928 * First, we check if it's a mouse. It should send 0x00 or 0x03
929 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
930 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
931 * ID queries, probably due to a firmware bug.
935 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
938 if (param[0] != 0x00 && param[0] != 0x03 &&
939 param[0] != 0x04 && param[0] != 0xff)
943 * Then we reset and disable the mouse so that it doesn't generate events.
946 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
947 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
953 * Here we set the mouse resolution.
956 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
958 static const unsigned char params[] = { 0, 1, 2, 2, 3 };
961 if (resolution == 0 || resolution > 200)
964 p = params[resolution / 50];
965 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
966 psmouse->resolution = 25 << p;
970 * Here we set the mouse report rate.
973 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
975 static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
979 while (rates[i] > rate) i++;
981 ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE);
986 * psmouse_initialize() initializes the mouse to a sane state.
989 static void psmouse_initialize(struct psmouse *psmouse)
992 * We set the mouse report rate, resolution and scaling.
995 if (psmouse_max_proto != PSMOUSE_PS2) {
996 psmouse->set_rate(psmouse, psmouse->rate);
997 psmouse->set_resolution(psmouse, psmouse->resolution);
998 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
1003 * psmouse_activate() enables the mouse so that we get motion reports from it.
1006 static void psmouse_activate(struct psmouse *psmouse)
1008 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1009 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
1010 psmouse->ps2dev.serio->phys);
1012 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1017 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
1018 * reports from it unless we explicitly request it.
1021 static void psmouse_deactivate(struct psmouse *psmouse)
1023 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1024 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
1025 psmouse->ps2dev.serio->phys);
1027 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1031 * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it.
1034 static int psmouse_poll(struct psmouse *psmouse)
1036 return ps2_command(&psmouse->ps2dev, psmouse->packet,
1037 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8));
1042 * psmouse_resync() attempts to re-validate current protocol.
1045 static void psmouse_resync(struct work_struct *work)
1047 struct psmouse *parent = NULL, *psmouse =
1048 container_of(work, struct psmouse, resync_work.work);
1049 struct serio *serio = psmouse->ps2dev.serio;
1050 psmouse_ret_t rc = PSMOUSE_GOOD_DATA;
1051 bool failed = false, enabled = false;
1054 mutex_lock(&psmouse_mutex);
1056 if (psmouse->state != PSMOUSE_RESYNCING)
1059 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1060 parent = serio_get_drvdata(serio->parent);
1061 psmouse_deactivate(parent);
1065 * Some mice don't ACK commands sent while they are in the middle of
1066 * transmitting motion packet. To avoid delay we use ps2_sendbyte()
1067 * instead of ps2_command() which would wait for 200ms for an ACK
1068 * that may never come.
1069 * As an additional quirk ALPS touchpads may not only forget to ACK
1070 * disable command but will stop reporting taps, so if we see that
1071 * mouse at least once ACKs disable we will do full reconnect if ACK
1074 psmouse->num_resyncs++;
1076 if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) {
1077 if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command)
1080 psmouse->acks_disable_command = true;
1083 * Poll the mouse. If it was reset the packet will be shorter than
1084 * psmouse->pktsize and ps2_command will fail. We do not expect and
1085 * do not handle scenario when mouse "upgrades" its protocol while
1086 * disconnected since it would require additional delay. If we ever
1087 * see a mouse that does it we'll adjust the code.
1090 if (psmouse->poll(psmouse))
1093 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1094 for (i = 0; i < psmouse->pktsize; i++) {
1096 rc = psmouse->protocol_handler(psmouse);
1097 if (rc != PSMOUSE_GOOD_DATA)
1100 if (rc != PSMOUSE_FULL_PACKET)
1102 psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
1106 * Now try to enable mouse. We try to do that even if poll failed and also
1107 * repeat our attempts 5 times, otherwise we may be left out with disabled
1110 for (i = 0; i < 5; i++) {
1111 if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1119 printk(KERN_WARNING "psmouse.c: failed to re-enable mouse on %s\n",
1120 psmouse->ps2dev.serio->phys);
1125 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1126 printk(KERN_INFO "psmouse.c: resync failed, issuing reconnect request\n");
1127 serio_reconnect(serio);
1129 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1132 psmouse_activate(parent);
1134 mutex_unlock(&psmouse_mutex);
1138 * psmouse_cleanup() resets the mouse into power-on state.
1141 static void psmouse_cleanup(struct serio *serio)
1143 struct psmouse *psmouse = serio_get_drvdata(serio);
1144 struct psmouse *parent = NULL;
1146 mutex_lock(&psmouse_mutex);
1148 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1149 parent = serio_get_drvdata(serio->parent);
1150 psmouse_deactivate(parent);
1153 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1156 * Disable stream mode so cleanup routine can proceed undisturbed.
1158 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1159 printk(KERN_WARNING "psmouse.c: Failed to disable mouse on %s\n",
1160 psmouse->ps2dev.serio->phys);
1162 if (psmouse->cleanup)
1163 psmouse->cleanup(psmouse);
1166 * Reset the mouse to defaults (bare PS/2 protocol).
1168 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1171 * Some boxes, such as HP nx7400, get terribly confused if mouse
1172 * is not fully enabled before suspending/shutting down.
1174 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1177 if (parent->pt_deactivate)
1178 parent->pt_deactivate(parent);
1180 psmouse_activate(parent);
1183 mutex_unlock(&psmouse_mutex);
1187 * psmouse_disconnect() closes and frees.
1190 static void psmouse_disconnect(struct serio *serio)
1192 struct psmouse *psmouse, *parent = NULL;
1194 psmouse = serio_get_drvdata(serio);
1196 sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group);
1198 mutex_lock(&psmouse_mutex);
1200 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1202 /* make sure we don't have a resync in progress */
1203 mutex_unlock(&psmouse_mutex);
1204 flush_workqueue(kpsmoused_wq);
1205 mutex_lock(&psmouse_mutex);
1207 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1208 parent = serio_get_drvdata(serio->parent);
1209 psmouse_deactivate(parent);
1212 if (psmouse->disconnect)
1213 psmouse->disconnect(psmouse);
1215 if (parent && parent->pt_deactivate)
1216 parent->pt_deactivate(parent);
1218 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1221 serio_set_drvdata(serio, NULL);
1222 input_unregister_device(psmouse->dev);
1226 psmouse_activate(parent);
1228 mutex_unlock(&psmouse_mutex);
1231 static int psmouse_switch_protocol(struct psmouse *psmouse,
1232 const struct psmouse_protocol *proto)
1234 const struct psmouse_protocol *selected_proto;
1235 struct input_dev *input_dev = psmouse->dev;
1237 input_dev->dev.parent = &psmouse->ps2dev.serio->dev;
1239 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1240 input_dev->keybit[BIT_WORD(BTN_MOUSE)] =
1241 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1242 input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1244 psmouse->set_rate = psmouse_set_rate;
1245 psmouse->set_resolution = psmouse_set_resolution;
1246 psmouse->poll = psmouse_poll;
1247 psmouse->protocol_handler = psmouse_process_byte;
1248 psmouse->pktsize = 3;
1250 if (proto && (proto->detect || proto->init)) {
1251 if (proto->detect && proto->detect(psmouse, true) < 0)
1254 if (proto->init && proto->init(psmouse) < 0)
1257 psmouse->type = proto->type;
1258 selected_proto = proto;
1260 psmouse->type = psmouse_extensions(psmouse,
1261 psmouse_max_proto, true);
1262 selected_proto = psmouse_protocol_by_type(psmouse->type);
1265 psmouse->ignore_parity = selected_proto->ignore_parity;
1268 * If mouse's packet size is 3 there is no point in polling the
1269 * device in hopes to detect protocol reset - we won't get less
1270 * than 3 bytes response anyhow.
1272 if (psmouse->pktsize == 3)
1273 psmouse->resync_time = 0;
1276 * Some smart KVMs fake response to POLL command returning just
1277 * 3 bytes and messing up our resync logic, so if initial poll
1278 * fails we won't try polling the device anymore. Hopefully
1279 * such KVM will maintain initially selected protocol.
1281 if (psmouse->resync_time && psmouse->poll(psmouse))
1282 psmouse->resync_time = 0;
1284 snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s",
1285 selected_proto->name, psmouse->vendor, psmouse->name);
1287 input_dev->name = psmouse->devname;
1288 input_dev->phys = psmouse->phys;
1289 input_dev->id.bustype = BUS_I8042;
1290 input_dev->id.vendor = 0x0002;
1291 input_dev->id.product = psmouse->type;
1292 input_dev->id.version = psmouse->model;
1298 * psmouse_connect() is a callback from the serio module when
1299 * an unhandled serio port is found.
1301 static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
1303 struct psmouse *psmouse, *parent = NULL;
1304 struct input_dev *input_dev;
1305 int retval = 0, error = -ENOMEM;
1307 mutex_lock(&psmouse_mutex);
1310 * If this is a pass-through port deactivate parent so the device
1311 * connected to this port can be successfully identified
1313 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1314 parent = serio_get_drvdata(serio->parent);
1315 psmouse_deactivate(parent);
1318 psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
1319 input_dev = input_allocate_device();
1320 if (!psmouse || !input_dev)
1323 ps2_init(&psmouse->ps2dev, serio);
1324 INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync);
1325 psmouse->dev = input_dev;
1326 snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
1328 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1330 serio_set_drvdata(serio, psmouse);
1332 error = serio_open(serio, drv);
1334 goto err_clear_drvdata;
1336 if (psmouse_probe(psmouse) < 0) {
1338 goto err_close_serio;
1341 psmouse->rate = psmouse_rate;
1342 psmouse->resolution = psmouse_resolution;
1343 psmouse->resetafter = psmouse_resetafter;
1344 psmouse->resync_time = parent ? 0 : psmouse_resync_time;
1345 psmouse->smartscroll = psmouse_smartscroll;
1347 psmouse_switch_protocol(psmouse, NULL);
1349 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1350 psmouse_initialize(psmouse);
1352 error = input_register_device(psmouse->dev);
1354 goto err_protocol_disconnect;
1356 if (parent && parent->pt_activate)
1357 parent->pt_activate(parent);
1359 error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
1361 goto err_pt_deactivate;
1363 psmouse_activate(psmouse);
1366 /* If this is a pass-through port the parent needs to be re-activated */
1368 psmouse_activate(parent);
1370 mutex_unlock(&psmouse_mutex);
1374 if (parent && parent->pt_deactivate)
1375 parent->pt_deactivate(parent);
1376 input_unregister_device(psmouse->dev);
1377 input_dev = NULL; /* so we don't try to free it below */
1378 err_protocol_disconnect:
1379 if (psmouse->disconnect)
1380 psmouse->disconnect(psmouse);
1381 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1385 serio_set_drvdata(serio, NULL);
1387 input_free_device(input_dev);
1395 static int psmouse_reconnect(struct serio *serio)
1397 struct psmouse *psmouse = serio_get_drvdata(serio);
1398 struct psmouse *parent = NULL;
1399 struct serio_driver *drv = serio->drv;
1403 if (!drv || !psmouse) {
1404 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
1408 mutex_lock(&psmouse_mutex);
1410 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1411 parent = serio_get_drvdata(serio->parent);
1412 psmouse_deactivate(parent);
1415 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1417 if (psmouse->reconnect) {
1418 if (psmouse->reconnect(psmouse))
1421 psmouse_reset(psmouse);
1423 if (psmouse_probe(psmouse) < 0)
1426 type = psmouse_extensions(psmouse, psmouse_max_proto, false);
1427 if (psmouse->type != type)
1431 /* ok, the device type (and capabilities) match the old one,
1432 * we can continue using it, complete intialization
1434 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1436 psmouse_initialize(psmouse);
1438 if (parent && parent->pt_activate)
1439 parent->pt_activate(parent);
1441 psmouse_activate(psmouse);
1445 /* If this is a pass-through port the parent waits to be activated */
1447 psmouse_activate(parent);
1449 mutex_unlock(&psmouse_mutex);
1453 static struct serio_device_id psmouse_serio_ids[] = {
1461 .type = SERIO_PS_PSTHRU,
1469 MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1471 static struct serio_driver psmouse_drv = {
1475 .description = DRIVER_DESC,
1476 .id_table = psmouse_serio_ids,
1477 .interrupt = psmouse_interrupt,
1478 .connect = psmouse_connect,
1479 .reconnect = psmouse_reconnect,
1480 .disconnect = psmouse_disconnect,
1481 .cleanup = psmouse_cleanup,
1484 ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr,
1487 struct serio *serio = to_serio_port(dev);
1488 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1489 struct psmouse *psmouse;
1491 psmouse = serio_get_drvdata(serio);
1493 return attr->show(psmouse, attr->data, buf);
1496 ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr,
1497 const char *buf, size_t count)
1499 struct serio *serio = to_serio_port(dev);
1500 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1501 struct psmouse *psmouse, *parent = NULL;
1504 retval = mutex_lock_interruptible(&psmouse_mutex);
1508 psmouse = serio_get_drvdata(serio);
1510 if (attr->protect) {
1511 if (psmouse->state == PSMOUSE_IGNORE) {
1516 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1517 parent = serio_get_drvdata(serio->parent);
1518 psmouse_deactivate(parent);
1521 psmouse_deactivate(psmouse);
1524 retval = attr->set(psmouse, attr->data, buf, count);
1526 if (attr->protect) {
1527 if (retval != -ENODEV)
1528 psmouse_activate(psmouse);
1531 psmouse_activate(parent);
1535 mutex_unlock(&psmouse_mutex);
1540 static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
1542 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
1544 return sprintf(buf, "%u\n", *field);
1547 static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
1549 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
1550 unsigned long value;
1552 if (strict_strtoul(buf, 10, &value))
1555 if ((unsigned int)value != value)
1563 static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf)
1565 return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
1568 static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1570 struct serio *serio = psmouse->ps2dev.serio;
1571 struct psmouse *parent = NULL;
1572 struct input_dev *old_dev, *new_dev;
1573 const struct psmouse_protocol *proto, *old_proto;
1577 proto = psmouse_protocol_by_name(buf, count);
1581 if (psmouse->type == proto->type)
1584 new_dev = input_allocate_device();
1588 while (!list_empty(&serio->children)) {
1591 "psmouse: failed to destroy children ports, "
1592 "protocol change aborted.\n");
1593 input_free_device(new_dev);
1597 mutex_unlock(&psmouse_mutex);
1598 serio_unregister_child_port(serio);
1599 mutex_lock(&psmouse_mutex);
1601 if (serio->drv != &psmouse_drv) {
1602 input_free_device(new_dev);
1606 if (psmouse->type == proto->type) {
1607 input_free_device(new_dev);
1608 return count; /* switched by other thread */
1612 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1613 parent = serio_get_drvdata(serio->parent);
1614 if (parent->pt_deactivate)
1615 parent->pt_deactivate(parent);
1618 old_dev = psmouse->dev;
1619 old_proto = psmouse_protocol_by_type(psmouse->type);
1621 if (psmouse->disconnect)
1622 psmouse->disconnect(psmouse);
1624 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1626 psmouse->dev = new_dev;
1627 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1629 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1630 psmouse_reset(psmouse);
1631 /* default to PSMOUSE_PS2 */
1632 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1635 psmouse_initialize(psmouse);
1636 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1638 error = input_register_device(psmouse->dev);
1640 if (psmouse->disconnect)
1641 psmouse->disconnect(psmouse);
1643 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1644 input_free_device(new_dev);
1645 psmouse->dev = old_dev;
1646 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1647 psmouse_switch_protocol(psmouse, old_proto);
1648 psmouse_initialize(psmouse);
1649 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1654 input_unregister_device(old_dev);
1656 if (parent && parent->pt_activate)
1657 parent->pt_activate(parent);
1662 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1664 unsigned long value;
1666 if (strict_strtoul(buf, 10, &value))
1669 psmouse->set_rate(psmouse, value);
1673 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1675 unsigned long value;
1677 if (strict_strtoul(buf, 10, &value))
1680 psmouse->set_resolution(psmouse, value);
1685 static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp)
1687 const struct psmouse_protocol *proto;
1692 proto = psmouse_protocol_by_name(val, strlen(val));
1694 if (!proto || !proto->maxproto)
1697 *((unsigned int *)kp->arg) = proto->type;
1702 static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp)
1704 int type = *((unsigned int *)kp->arg);
1706 return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name);
1709 static int __init psmouse_init(void)
1713 lifebook_module_init();
1714 synaptics_module_init();
1717 kpsmoused_wq = create_singlethread_workqueue("kpsmoused");
1718 if (!kpsmoused_wq) {
1719 printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n");
1723 err = serio_register_driver(&psmouse_drv);
1725 destroy_workqueue(kpsmoused_wq);
1730 static void __exit psmouse_exit(void)
1732 serio_unregister_driver(&psmouse_drv);
1733 destroy_workqueue(kpsmoused_wq);
1736 module_init(psmouse_init);
1737 module_exit(psmouse_exit);