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
, struct kernel_param
*kp
);
43 static int psmouse_get_maxproto(char *buffer
, struct kernel_param
*kp
);
44 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
45 #define param_set_proto_abbrev psmouse_set_maxproto
46 #define param_get_proto_abbrev psmouse_get_maxproto
47 module_param_named(proto
, psmouse_max_proto
, proto_abbrev
, 0644);
48 MODULE_PARM_DESC(proto
, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
50 static unsigned int psmouse_resolution
= 200;
51 module_param_named(resolution
, psmouse_resolution
, uint
, 0644);
52 MODULE_PARM_DESC(resolution
, "Resolution, in dpi.");
54 static unsigned int psmouse_rate
= 100;
55 module_param_named(rate
, psmouse_rate
, uint
, 0644);
56 MODULE_PARM_DESC(rate
, "Report rate, in reports per second.");
58 static unsigned int psmouse_smartscroll
= 1;
59 module_param_named(smartscroll
, psmouse_smartscroll
, bool, 0644);
60 MODULE_PARM_DESC(smartscroll
, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
62 static unsigned int psmouse_resetafter
= 5;
63 module_param_named(resetafter
, psmouse_resetafter
, uint
, 0644);
64 MODULE_PARM_DESC(resetafter
, "Reset device after so many bad packets (0 = never).");
66 static unsigned int psmouse_resync_time
;
67 module_param_named(resync_time
, psmouse_resync_time
, uint
, 0644);
68 MODULE_PARM_DESC(resync_time
, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
70 PSMOUSE_DEFINE_ATTR(protocol
, S_IWUSR
| S_IRUGO
,
72 psmouse_attr_show_protocol
, psmouse_attr_set_protocol
);
73 PSMOUSE_DEFINE_ATTR(rate
, S_IWUSR
| S_IRUGO
,
74 (void *) offsetof(struct psmouse
, rate
),
75 psmouse_show_int_attr
, psmouse_attr_set_rate
);
76 PSMOUSE_DEFINE_ATTR(resolution
, S_IWUSR
| S_IRUGO
,
77 (void *) offsetof(struct psmouse
, resolution
),
78 psmouse_show_int_attr
, psmouse_attr_set_resolution
);
79 PSMOUSE_DEFINE_ATTR(resetafter
, S_IWUSR
| S_IRUGO
,
80 (void *) offsetof(struct psmouse
, resetafter
),
81 psmouse_show_int_attr
, psmouse_set_int_attr
);
82 PSMOUSE_DEFINE_ATTR(resync_time
, S_IWUSR
| S_IRUGO
,
83 (void *) offsetof(struct psmouse
, resync_time
),
84 psmouse_show_int_attr
, psmouse_set_int_attr
);
86 static struct attribute
*psmouse_attributes
[] = {
87 &psmouse_attr_protocol
.dattr
.attr
,
88 &psmouse_attr_rate
.dattr
.attr
,
89 &psmouse_attr_resolution
.dattr
.attr
,
90 &psmouse_attr_resetafter
.dattr
.attr
,
91 &psmouse_attr_resync_time
.dattr
.attr
,
95 static struct attribute_group psmouse_attribute_group
= {
96 .attrs
= psmouse_attributes
,
100 * psmouse_mutex protects all operations changing state of mouse
101 * (connecting, disconnecting, changing rate or resolution via
102 * sysfs). We could use a per-device semaphore but since there
103 * rarely more than one PS/2 mouse connected and since semaphore
104 * is taken in "slow" paths it is not worth it.
106 static DEFINE_MUTEX(psmouse_mutex
);
108 static struct workqueue_struct
*kpsmoused_wq
;
110 struct psmouse_protocol
{
111 enum psmouse_type type
;
115 int (*detect
)(struct psmouse
*, bool);
116 int (*init
)(struct psmouse
*);
120 * psmouse_process_byte() analyzes the PS/2 data stream and reports
121 * relevant events to the input module once full packet has arrived.
124 static psmouse_ret_t
psmouse_process_byte(struct psmouse
*psmouse
)
126 struct input_dev
*dev
= psmouse
->dev
;
127 unsigned char *packet
= psmouse
->packet
;
129 if (psmouse
->pktcnt
< psmouse
->pktsize
)
130 return PSMOUSE_GOOD_DATA
;
133 * Full packet accumulated, process it
137 * Scroll wheel on IntelliMice, scroll buttons on NetMice
140 if (psmouse
->type
== PSMOUSE_IMPS
|| psmouse
->type
== PSMOUSE_GENPS
)
141 input_report_rel(dev
, REL_WHEEL
, -(signed char) packet
[3]);
144 * Scroll wheel and buttons on IntelliMouse Explorer
147 if (psmouse
->type
== PSMOUSE_IMEX
) {
148 switch (packet
[3] & 0xC0) {
149 case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
150 input_report_rel(dev
, REL_WHEEL
, (int) (packet
[3] & 32) - (int) (packet
[3] & 31));
152 case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
153 input_report_rel(dev
, REL_HWHEEL
, (int) (packet
[3] & 32) - (int) (packet
[3] & 31));
157 input_report_rel(dev
, REL_WHEEL
, (int) (packet
[3] & 8) - (int) (packet
[3] & 7));
158 input_report_key(dev
, BTN_SIDE
, (packet
[3] >> 4) & 1);
159 input_report_key(dev
, BTN_EXTRA
, (packet
[3] >> 5) & 1);
165 * Extra buttons on Genius NewNet 3D
168 if (psmouse
->type
== PSMOUSE_GENPS
) {
169 input_report_key(dev
, BTN_SIDE
, (packet
[0] >> 6) & 1);
170 input_report_key(dev
, BTN_EXTRA
, (packet
[0] >> 7) & 1);
174 * Extra button on ThinkingMouse
176 if (psmouse
->type
== PSMOUSE_THINKPS
) {
177 input_report_key(dev
, BTN_EXTRA
, (packet
[0] >> 3) & 1);
178 /* Without this bit of weirdness moving up gives wildly high Y changes. */
179 packet
[1] |= (packet
[0] & 0x40) << 1;
183 * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first
186 if (psmouse
->type
== PSMOUSE_CORTRON
) {
187 input_report_key(dev
, BTN_SIDE
, (packet
[0] >> 3) & 1);
195 input_report_key(dev
, BTN_LEFT
, packet
[0] & 1);
196 input_report_key(dev
, BTN_MIDDLE
, (packet
[0] >> 2) & 1);
197 input_report_key(dev
, BTN_RIGHT
, (packet
[0] >> 1) & 1);
199 input_report_rel(dev
, REL_X
, packet
[1] ? (int) packet
[1] - (int) ((packet
[0] << 4) & 0x100) : 0);
200 input_report_rel(dev
, REL_Y
, packet
[2] ? (int) ((packet
[0] << 3) & 0x100) - (int) packet
[2] : 0);
204 return PSMOUSE_FULL_PACKET
;
207 void psmouse_queue_work(struct psmouse
*psmouse
, struct delayed_work
*work
,
210 queue_delayed_work(kpsmoused_wq
, work
, delay
);
214 * __psmouse_set_state() sets new psmouse state and resets all flags.
217 static inline void __psmouse_set_state(struct psmouse
*psmouse
, enum psmouse_state new_state
)
219 psmouse
->state
= new_state
;
220 psmouse
->pktcnt
= psmouse
->out_of_sync_cnt
= 0;
221 psmouse
->ps2dev
.flags
= 0;
222 psmouse
->last
= jiffies
;
227 * psmouse_set_state() sets new psmouse state and resets all flags and
228 * counters while holding serio lock so fighting with interrupt handler
232 void psmouse_set_state(struct psmouse
*psmouse
, enum psmouse_state new_state
)
234 serio_pause_rx(psmouse
->ps2dev
.serio
);
235 __psmouse_set_state(psmouse
, new_state
);
236 serio_continue_rx(psmouse
->ps2dev
.serio
);
240 * psmouse_handle_byte() processes one byte of the input data stream
241 * by calling corresponding protocol handler.
244 static int psmouse_handle_byte(struct psmouse
*psmouse
)
246 psmouse_ret_t rc
= psmouse
->protocol_handler(psmouse
);
249 case PSMOUSE_BAD_DATA
:
250 if (psmouse
->state
== PSMOUSE_ACTIVATED
) {
251 printk(KERN_WARNING
"psmouse.c: %s at %s lost sync at byte %d\n",
252 psmouse
->name
, psmouse
->phys
, psmouse
->pktcnt
);
253 if (++psmouse
->out_of_sync_cnt
== psmouse
->resetafter
) {
254 __psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
255 printk(KERN_NOTICE
"psmouse.c: issuing reconnect request\n");
256 serio_reconnect(psmouse
->ps2dev
.serio
);
263 case PSMOUSE_FULL_PACKET
:
265 if (psmouse
->out_of_sync_cnt
) {
266 psmouse
->out_of_sync_cnt
= 0;
267 printk(KERN_NOTICE
"psmouse.c: %s at %s - driver resynched.\n",
268 psmouse
->name
, psmouse
->phys
);
272 case PSMOUSE_GOOD_DATA
:
279 * psmouse_interrupt() handles incoming characters, either passing them
280 * for normal processing or gathering them as command response.
283 static irqreturn_t
psmouse_interrupt(struct serio
*serio
,
284 unsigned char data
, unsigned int flags
)
286 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
288 if (psmouse
->state
== PSMOUSE_IGNORE
)
291 if (flags
& (SERIO_PARITY
|SERIO_TIMEOUT
)) {
292 if (psmouse
->state
== PSMOUSE_ACTIVATED
)
293 printk(KERN_WARNING
"psmouse.c: bad data from KBC -%s%s\n",
294 flags
& SERIO_TIMEOUT
? " timeout" : "",
295 flags
& SERIO_PARITY
? " bad parity" : "");
296 ps2_cmd_aborted(&psmouse
->ps2dev
);
300 if (unlikely(psmouse
->ps2dev
.flags
& PS2_FLAG_ACK
))
301 if (ps2_handle_ack(&psmouse
->ps2dev
, data
))
304 if (unlikely(psmouse
->ps2dev
.flags
& PS2_FLAG_CMD
))
305 if (ps2_handle_response(&psmouse
->ps2dev
, data
))
308 if (psmouse
->state
<= PSMOUSE_RESYNCING
)
311 if (psmouse
->state
== PSMOUSE_ACTIVATED
&&
312 psmouse
->pktcnt
&& time_after(jiffies
, psmouse
->last
+ HZ
/2)) {
313 printk(KERN_INFO
"psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
314 psmouse
->name
, psmouse
->phys
, psmouse
->pktcnt
);
315 psmouse
->badbyte
= psmouse
->packet
[0];
316 __psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
317 psmouse_queue_work(psmouse
, &psmouse
->resync_work
, 0);
321 psmouse
->packet
[psmouse
->pktcnt
++] = data
;
323 * Check if this is a new device announcement (0xAA 0x00)
325 if (unlikely(psmouse
->packet
[0] == PSMOUSE_RET_BAT
&& psmouse
->pktcnt
<= 2)) {
326 if (psmouse
->pktcnt
== 1) {
327 psmouse
->last
= jiffies
;
331 if (psmouse
->packet
[1] == PSMOUSE_RET_ID
||
332 (psmouse
->type
== PSMOUSE_HGPK
&&
333 psmouse
->packet
[1] == PSMOUSE_RET_BAT
)) {
334 __psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
335 serio_reconnect(serio
);
339 * Not a new device, try processing first byte normally
342 if (psmouse_handle_byte(psmouse
))
345 psmouse
->packet
[psmouse
->pktcnt
++] = data
;
349 * See if we need to force resync because mouse was idle for too long
351 if (psmouse
->state
== PSMOUSE_ACTIVATED
&&
352 psmouse
->pktcnt
== 1 && psmouse
->resync_time
&&
353 time_after(jiffies
, psmouse
->last
+ psmouse
->resync_time
* HZ
)) {
354 psmouse
->badbyte
= psmouse
->packet
[0];
355 __psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
356 psmouse_queue_work(psmouse
, &psmouse
->resync_work
, 0);
360 psmouse
->last
= jiffies
;
361 psmouse_handle_byte(psmouse
);
369 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
370 * using sliced syntax, understood by advanced devices, such as Logitech
371 * or Synaptics touchpads. The command is encoded as:
372 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
375 int psmouse_sliced_command(struct psmouse
*psmouse
, unsigned char command
)
379 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
))
382 for (i
= 6; i
>= 0; i
-= 2) {
383 unsigned char d
= (command
>> i
) & 3;
384 if (ps2_command(&psmouse
->ps2dev
, &d
, PSMOUSE_CMD_SETRES
))
393 * psmouse_reset() resets the mouse into power-on state.
395 int psmouse_reset(struct psmouse
*psmouse
)
397 unsigned char param
[2];
399 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_RESET_BAT
))
402 if (param
[0] != PSMOUSE_RET_BAT
&& param
[1] != PSMOUSE_RET_ID
)
410 * Genius NetMouse magic init.
412 static int genius_detect(struct psmouse
*psmouse
, bool set_properties
)
414 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
415 unsigned char param
[4];
418 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
419 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
420 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
421 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
422 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
);
424 if (param
[0] != 0x00 || param
[1] != 0x33 || param
[2] != 0x55)
427 if (set_properties
) {
428 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
429 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
430 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
431 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
433 psmouse
->vendor
= "Genius";
434 psmouse
->name
= "Mouse";
435 psmouse
->pktsize
= 4;
442 * IntelliMouse magic init.
444 static int intellimouse_detect(struct psmouse
*psmouse
, bool set_properties
)
446 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
447 unsigned char param
[2];
450 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
452 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
454 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
455 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
460 if (set_properties
) {
461 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
462 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
464 if (!psmouse
->vendor
)
465 psmouse
->vendor
= "Generic";
467 psmouse
->name
= "Wheel Mouse";
468 psmouse
->pktsize
= 4;
475 * Try IntelliMouse/Explorer magic init.
477 static int im_explorer_detect(struct psmouse
*psmouse
, bool set_properties
)
479 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
480 unsigned char param
[2];
482 intellimouse_detect(psmouse
, 0);
485 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
487 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
489 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
490 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
495 /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
497 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
499 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
501 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
503 if (set_properties
) {
504 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
505 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
506 __set_bit(REL_HWHEEL
, psmouse
->dev
->relbit
);
507 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
508 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
510 if (!psmouse
->vendor
)
511 psmouse
->vendor
= "Generic";
513 psmouse
->name
= "Explorer Mouse";
514 psmouse
->pktsize
= 4;
521 * Kensington ThinkingMouse / ExpertMouse magic init.
523 static int thinking_detect(struct psmouse
*psmouse
, bool set_properties
)
525 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
526 unsigned char param
[2];
527 static const unsigned char seq
[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
531 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
533 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
534 for (i
= 0; i
< ARRAY_SIZE(seq
); i
++) {
536 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
538 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
543 if (set_properties
) {
544 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
545 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
547 psmouse
->vendor
= "Kensington";
548 psmouse
->name
= "ThinkingMouse";
555 * Bare PS/2 protocol "detection". Always succeeds.
557 static int ps2bare_detect(struct psmouse
*psmouse
, bool set_properties
)
559 if (set_properties
) {
560 if (!psmouse
->vendor
)
561 psmouse
->vendor
= "Generic";
563 psmouse
->name
= "Mouse";
566 * We have no way of figuring true number of buttons so let's
567 * assume that the device has 3.
569 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
576 * Cortron PS/2 protocol detection. There's no special way to detect it, so it
577 * must be forced by sysfs protocol writing.
579 static int cortron_detect(struct psmouse
*psmouse
, bool set_properties
)
581 if (set_properties
) {
582 psmouse
->vendor
= "Cortron";
583 psmouse
->name
= "PS/2 Trackball";
585 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
586 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
593 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
594 * the mouse may have.
597 static int psmouse_extensions(struct psmouse
*psmouse
,
598 unsigned int max_proto
, bool set_properties
)
600 bool synaptics_hardware
= false;
603 * We always check for lifebook because it does not disturb mouse
604 * (it only checks DMI information).
606 if (lifebook_detect(psmouse
, set_properties
) == 0) {
607 if (max_proto
> PSMOUSE_IMEX
) {
608 if (!set_properties
|| lifebook_init(psmouse
) == 0)
609 return PSMOUSE_LIFEBOOK
;
614 * Try Kensington ThinkingMouse (we try first, because synaptics probe
615 * upsets the thinkingmouse).
618 if (max_proto
> PSMOUSE_IMEX
&& thinking_detect(psmouse
, set_properties
) == 0)
619 return PSMOUSE_THINKPS
;
622 * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol
623 * support is disabled in config - we need to know if it is synaptics so we
624 * can reset it properly after probing for intellimouse.
626 if (max_proto
> PSMOUSE_PS2
&& synaptics_detect(psmouse
, set_properties
) == 0) {
627 synaptics_hardware
= true;
629 if (max_proto
> PSMOUSE_IMEX
) {
630 if (!set_properties
|| synaptics_init(psmouse
) == 0)
631 return PSMOUSE_SYNAPTICS
;
633 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
634 * Unfortunately Logitech/Genius probes confuse some firmware versions so
635 * we'll have to skip them.
637 max_proto
= PSMOUSE_IMEX
;
640 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
642 synaptics_reset(psmouse
);
648 if (max_proto
> PSMOUSE_IMEX
) {
649 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
650 if (alps_detect(psmouse
, set_properties
) == 0) {
651 if (!set_properties
|| alps_init(psmouse
) == 0)
654 * Init failed, try basic relative protocols
656 max_proto
= PSMOUSE_IMEX
;
661 * Try OLPC HGPK touchpad.
663 if (max_proto
> PSMOUSE_IMEX
&&
664 hgpk_detect(psmouse
, set_properties
) == 0) {
665 if (!set_properties
|| hgpk_init(psmouse
) == 0)
668 * Init failed, try basic relative protocols
670 max_proto
= PSMOUSE_IMEX
;
674 * Try Elantech touchpad.
676 if (max_proto
> PSMOUSE_IMEX
&&
677 elantech_detect(psmouse
, set_properties
) == 0) {
678 if (!set_properties
|| elantech_init(psmouse
) == 0)
679 return PSMOUSE_ELANTECH
;
681 * Init failed, try basic relative protocols
683 max_proto
= PSMOUSE_IMEX
;
687 * Try Finger Sensing Pad
689 if (max_proto
> PSMOUSE_IMEX
) {
690 if (fsp_detect(psmouse
, set_properties
) == 0) {
691 if (!set_properties
|| fsp_init(psmouse
) == 0)
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 * Reset to defaults in case the device got confused by extended
716 * protocol probes. Note that we follow up with full reset because
717 * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
719 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
720 psmouse_reset(psmouse
);
722 if (max_proto
>= PSMOUSE_IMEX
&& im_explorer_detect(psmouse
, set_properties
) == 0)
725 if (max_proto
>= PSMOUSE_IMPS
&& intellimouse_detect(psmouse
, set_properties
) == 0)
729 * Okay, all failed, we have a standard mouse here. The number of the buttons
730 * is still a question, though. We assume 3.
732 ps2bare_detect(psmouse
, set_properties
);
734 if (synaptics_hardware
) {
736 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
737 * We need to reset the touchpad because if there is a track point on the
738 * pass through port it could get disabled while probing for protocol
741 psmouse_reset(psmouse
);
747 static const struct psmouse_protocol psmouse_protocols
[] = {
753 .detect
= ps2bare_detect
,
755 #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
757 .type
= PSMOUSE_PS2PP
,
760 .detect
= ps2pp_init
,
764 .type
= PSMOUSE_THINKPS
,
767 .detect
= thinking_detect
,
770 .type
= PSMOUSE_GENPS
,
773 .detect
= genius_detect
,
776 .type
= PSMOUSE_IMPS
,
780 .detect
= intellimouse_detect
,
783 .type
= PSMOUSE_IMEX
,
787 .detect
= im_explorer_detect
,
789 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
791 .type
= PSMOUSE_SYNAPTICS
,
793 .alias
= "synaptics",
794 .detect
= synaptics_detect
,
795 .init
= synaptics_init
,
798 #ifdef CONFIG_MOUSE_PS2_ALPS
800 .type
= PSMOUSE_ALPS
,
803 .detect
= alps_detect
,
807 #ifdef CONFIG_MOUSE_PS2_LIFEBOOK
809 .type
= PSMOUSE_LIFEBOOK
,
812 .init
= lifebook_init
,
815 #ifdef CONFIG_MOUSE_PS2_TRACKPOINT
817 .type
= PSMOUSE_TRACKPOINT
,
819 .alias
= "trackpoint",
820 .detect
= trackpoint_detect
,
823 #ifdef CONFIG_MOUSE_PS2_TOUCHKIT
825 .type
= PSMOUSE_TOUCHKIT_PS2
,
826 .name
= "touchkitPS/2",
828 .detect
= touchkit_ps2_detect
,
831 #ifdef CONFIG_MOUSE_PS2_OLPC
833 .type
= PSMOUSE_HGPK
,
836 .detect
= hgpk_detect
,
839 #ifdef CONFIG_MOUSE_PS2_ELANTECH
841 .type
= PSMOUSE_ELANTECH
,
844 .detect
= elantech_detect
,
845 .init
= elantech_init
,
848 #ifdef CONFIG_MOUSE_PS2_SENTELIC
853 .detect
= fsp_detect
,
858 .type
= PSMOUSE_CORTRON
,
859 .name
= "CortronPS/2",
861 .detect
= cortron_detect
,
864 .type
= PSMOUSE_AUTO
,
871 static const struct psmouse_protocol
*psmouse_protocol_by_type(enum psmouse_type type
)
875 for (i
= 0; i
< ARRAY_SIZE(psmouse_protocols
); i
++)
876 if (psmouse_protocols
[i
].type
== type
)
877 return &psmouse_protocols
[i
];
880 return &psmouse_protocols
[0];
883 static const struct psmouse_protocol
*psmouse_protocol_by_name(const char *name
, size_t len
)
885 const struct psmouse_protocol
*p
;
888 for (i
= 0; i
< ARRAY_SIZE(psmouse_protocols
); i
++) {
889 p
= &psmouse_protocols
[i
];
891 if ((strlen(p
->name
) == len
&& !strncmp(p
->name
, name
, len
)) ||
892 (strlen(p
->alias
) == len
&& !strncmp(p
->alias
, name
, len
)))
893 return &psmouse_protocols
[i
];
901 * psmouse_probe() probes for a PS/2 mouse.
904 static int psmouse_probe(struct psmouse
*psmouse
)
906 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
907 unsigned char param
[2];
910 * First, we check if it's a mouse. It should send 0x00 or 0x03
911 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
912 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
913 * ID queries, probably due to a firmware bug.
917 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
))
920 if (param
[0] != 0x00 && param
[0] != 0x03 &&
921 param
[0] != 0x04 && param
[0] != 0xff)
925 * Then we reset and disable the mouse so that it doesn't generate events.
928 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
))
929 printk(KERN_WARNING
"psmouse.c: Failed to reset mouse on %s\n", ps2dev
->serio
->phys
);
935 * Here we set the mouse resolution.
938 void psmouse_set_resolution(struct psmouse
*psmouse
, unsigned int resolution
)
940 static const unsigned char params
[] = { 0, 1, 2, 2, 3 };
943 if (resolution
== 0 || resolution
> 200)
946 p
= params
[resolution
/ 50];
947 ps2_command(&psmouse
->ps2dev
, &p
, PSMOUSE_CMD_SETRES
);
948 psmouse
->resolution
= 25 << p
;
952 * Here we set the mouse report rate.
955 static void psmouse_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
957 static const unsigned char rates
[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
961 while (rates
[i
] > rate
) i
++;
963 ps2_command(&psmouse
->ps2dev
, &r
, PSMOUSE_CMD_SETRATE
);
968 * psmouse_initialize() initializes the mouse to a sane state.
971 static void psmouse_initialize(struct psmouse
*psmouse
)
974 * We set the mouse report rate, resolution and scaling.
977 if (psmouse_max_proto
!= PSMOUSE_PS2
) {
978 psmouse
->set_rate(psmouse
, psmouse
->rate
);
979 psmouse
->set_resolution(psmouse
, psmouse
->resolution
);
980 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
985 * psmouse_activate() enables the mouse so that we get motion reports from it.
988 static void psmouse_activate(struct psmouse
*psmouse
)
990 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
))
991 printk(KERN_WARNING
"psmouse.c: Failed to enable mouse on %s\n",
992 psmouse
->ps2dev
.serio
->phys
);
994 psmouse_set_state(psmouse
, PSMOUSE_ACTIVATED
);
999 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
1000 * reports from it unless we explicitly request it.
1003 static void psmouse_deactivate(struct psmouse
*psmouse
)
1005 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
))
1006 printk(KERN_WARNING
"psmouse.c: Failed to deactivate mouse on %s\n",
1007 psmouse
->ps2dev
.serio
->phys
);
1009 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1013 * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it.
1016 static int psmouse_poll(struct psmouse
*psmouse
)
1018 return ps2_command(&psmouse
->ps2dev
, psmouse
->packet
,
1019 PSMOUSE_CMD_POLL
| (psmouse
->pktsize
<< 8));
1024 * psmouse_resync() attempts to re-validate current protocol.
1027 static void psmouse_resync(struct work_struct
*work
)
1029 struct psmouse
*parent
= NULL
, *psmouse
=
1030 container_of(work
, struct psmouse
, resync_work
.work
);
1031 struct serio
*serio
= psmouse
->ps2dev
.serio
;
1032 psmouse_ret_t rc
= PSMOUSE_GOOD_DATA
;
1033 bool failed
= false, enabled
= false;
1036 mutex_lock(&psmouse_mutex
);
1038 if (psmouse
->state
!= PSMOUSE_RESYNCING
)
1041 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1042 parent
= serio_get_drvdata(serio
->parent
);
1043 psmouse_deactivate(parent
);
1047 * Some mice don't ACK commands sent while they are in the middle of
1048 * transmitting motion packet. To avoid delay we use ps2_sendbyte()
1049 * instead of ps2_command() which would wait for 200ms for an ACK
1050 * that may never come.
1051 * As an additional quirk ALPS touchpads may not only forget to ACK
1052 * disable command but will stop reporting taps, so if we see that
1053 * mouse at least once ACKs disable we will do full reconnect if ACK
1056 psmouse
->num_resyncs
++;
1058 if (ps2_sendbyte(&psmouse
->ps2dev
, PSMOUSE_CMD_DISABLE
, 20)) {
1059 if (psmouse
->num_resyncs
< 3 || psmouse
->acks_disable_command
)
1062 psmouse
->acks_disable_command
= true;
1065 * Poll the mouse. If it was reset the packet will be shorter than
1066 * psmouse->pktsize and ps2_command will fail. We do not expect and
1067 * do not handle scenario when mouse "upgrades" its protocol while
1068 * disconnected since it would require additional delay. If we ever
1069 * see a mouse that does it we'll adjust the code.
1072 if (psmouse
->poll(psmouse
))
1075 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1076 for (i
= 0; i
< psmouse
->pktsize
; i
++) {
1078 rc
= psmouse
->protocol_handler(psmouse
);
1079 if (rc
!= PSMOUSE_GOOD_DATA
)
1082 if (rc
!= PSMOUSE_FULL_PACKET
)
1084 psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
1088 * Now try to enable mouse. We try to do that even if poll failed and also
1089 * repeat our attempts 5 times, otherwise we may be left out with disabled
1092 for (i
= 0; i
< 5; i
++) {
1093 if (!ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1101 printk(KERN_WARNING
"psmouse.c: failed to re-enable mouse on %s\n",
1102 psmouse
->ps2dev
.serio
->phys
);
1107 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1108 printk(KERN_INFO
"psmouse.c: resync failed, issuing reconnect request\n");
1109 serio_reconnect(serio
);
1111 psmouse_set_state(psmouse
, PSMOUSE_ACTIVATED
);
1114 psmouse_activate(parent
);
1116 mutex_unlock(&psmouse_mutex
);
1120 * psmouse_cleanup() resets the mouse into power-on state.
1123 static void psmouse_cleanup(struct serio
*serio
)
1125 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
1126 struct psmouse
*parent
= NULL
;
1128 mutex_lock(&psmouse_mutex
);
1130 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1131 parent
= serio_get_drvdata(serio
->parent
);
1132 psmouse_deactivate(parent
);
1135 psmouse_deactivate(psmouse
);
1137 if (psmouse
->cleanup
)
1138 psmouse
->cleanup(psmouse
);
1141 * Reset the mouse to defaults (bare PS/2 protocol).
1143 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
1146 * Some boxes, such as HP nx7400, get terribly confused if mouse
1147 * is not fully enabled before suspending/shutting down.
1149 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
);
1152 if (parent
->pt_deactivate
)
1153 parent
->pt_deactivate(parent
);
1155 psmouse_activate(parent
);
1158 mutex_unlock(&psmouse_mutex
);
1162 * psmouse_disconnect() closes and frees.
1165 static void psmouse_disconnect(struct serio
*serio
)
1167 struct psmouse
*psmouse
, *parent
= NULL
;
1169 psmouse
= serio_get_drvdata(serio
);
1171 sysfs_remove_group(&serio
->dev
.kobj
, &psmouse_attribute_group
);
1173 mutex_lock(&psmouse_mutex
);
1175 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1177 /* make sure we don't have a resync in progress */
1178 mutex_unlock(&psmouse_mutex
);
1179 flush_workqueue(kpsmoused_wq
);
1180 mutex_lock(&psmouse_mutex
);
1182 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1183 parent
= serio_get_drvdata(serio
->parent
);
1184 psmouse_deactivate(parent
);
1187 if (psmouse
->disconnect
)
1188 psmouse
->disconnect(psmouse
);
1190 if (parent
&& parent
->pt_deactivate
)
1191 parent
->pt_deactivate(parent
);
1193 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1196 serio_set_drvdata(serio
, NULL
);
1197 input_unregister_device(psmouse
->dev
);
1201 psmouse_activate(parent
);
1203 mutex_unlock(&psmouse_mutex
);
1206 static int psmouse_switch_protocol(struct psmouse
*psmouse
,
1207 const struct psmouse_protocol
*proto
)
1209 struct input_dev
*input_dev
= psmouse
->dev
;
1211 input_dev
->dev
.parent
= &psmouse
->ps2dev
.serio
->dev
;
1213 input_dev
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_REL
);
1214 input_dev
->keybit
[BIT_WORD(BTN_MOUSE
)] =
1215 BIT_MASK(BTN_LEFT
) | BIT_MASK(BTN_RIGHT
);
1216 input_dev
->relbit
[0] = BIT_MASK(REL_X
) | BIT_MASK(REL_Y
);
1218 psmouse
->set_rate
= psmouse_set_rate
;
1219 psmouse
->set_resolution
= psmouse_set_resolution
;
1220 psmouse
->poll
= psmouse_poll
;
1221 psmouse
->protocol_handler
= psmouse_process_byte
;
1222 psmouse
->pktsize
= 3;
1224 if (proto
&& (proto
->detect
|| proto
->init
)) {
1225 if (proto
->detect
&& proto
->detect(psmouse
, 1) < 0)
1228 if (proto
->init
&& proto
->init(psmouse
) < 0)
1231 psmouse
->type
= proto
->type
;
1233 psmouse
->type
= psmouse_extensions(psmouse
,
1234 psmouse_max_proto
, true);
1237 * If mouse's packet size is 3 there is no point in polling the
1238 * device in hopes to detect protocol reset - we won't get less
1239 * than 3 bytes response anyhow.
1241 if (psmouse
->pktsize
== 3)
1242 psmouse
->resync_time
= 0;
1245 * Some smart KVMs fake response to POLL command returning just
1246 * 3 bytes and messing up our resync logic, so if initial poll
1247 * fails we won't try polling the device anymore. Hopefully
1248 * such KVM will maintain initially selected protocol.
1250 if (psmouse
->resync_time
&& psmouse
->poll(psmouse
))
1251 psmouse
->resync_time
= 0;
1253 snprintf(psmouse
->devname
, sizeof(psmouse
->devname
), "%s %s %s",
1254 psmouse_protocol_by_type(psmouse
->type
)->name
, psmouse
->vendor
, psmouse
->name
);
1256 input_dev
->name
= psmouse
->devname
;
1257 input_dev
->phys
= psmouse
->phys
;
1258 input_dev
->id
.bustype
= BUS_I8042
;
1259 input_dev
->id
.vendor
= 0x0002;
1260 input_dev
->id
.product
= psmouse
->type
;
1261 input_dev
->id
.version
= psmouse
->model
;
1267 * psmouse_connect() is a callback from the serio module when
1268 * an unhandled serio port is found.
1270 static int psmouse_connect(struct serio
*serio
, struct serio_driver
*drv
)
1272 struct psmouse
*psmouse
, *parent
= NULL
;
1273 struct input_dev
*input_dev
;
1274 int retval
= 0, error
= -ENOMEM
;
1276 mutex_lock(&psmouse_mutex
);
1279 * If this is a pass-through port deactivate parent so the device
1280 * connected to this port can be successfully identified
1282 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1283 parent
= serio_get_drvdata(serio
->parent
);
1284 psmouse_deactivate(parent
);
1287 psmouse
= kzalloc(sizeof(struct psmouse
), GFP_KERNEL
);
1288 input_dev
= input_allocate_device();
1289 if (!psmouse
|| !input_dev
)
1292 ps2_init(&psmouse
->ps2dev
, serio
);
1293 INIT_DELAYED_WORK(&psmouse
->resync_work
, psmouse_resync
);
1294 psmouse
->dev
= input_dev
;
1295 snprintf(psmouse
->phys
, sizeof(psmouse
->phys
), "%s/input0", serio
->phys
);
1297 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1299 serio_set_drvdata(serio
, psmouse
);
1301 error
= serio_open(serio
, drv
);
1303 goto err_clear_drvdata
;
1305 if (psmouse_probe(psmouse
) < 0) {
1307 goto err_close_serio
;
1310 psmouse
->rate
= psmouse_rate
;
1311 psmouse
->resolution
= psmouse_resolution
;
1312 psmouse
->resetafter
= psmouse_resetafter
;
1313 psmouse
->resync_time
= parent
? 0 : psmouse_resync_time
;
1314 psmouse
->smartscroll
= psmouse_smartscroll
;
1316 psmouse_switch_protocol(psmouse
, NULL
);
1318 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1319 psmouse_initialize(psmouse
);
1321 error
= input_register_device(psmouse
->dev
);
1323 goto err_protocol_disconnect
;
1325 if (parent
&& parent
->pt_activate
)
1326 parent
->pt_activate(parent
);
1328 error
= sysfs_create_group(&serio
->dev
.kobj
, &psmouse_attribute_group
);
1330 goto err_pt_deactivate
;
1332 psmouse_activate(psmouse
);
1335 /* If this is a pass-through port the parent needs to be re-activated */
1337 psmouse_activate(parent
);
1339 mutex_unlock(&psmouse_mutex
);
1343 if (parent
&& parent
->pt_deactivate
)
1344 parent
->pt_deactivate(parent
);
1345 input_unregister_device(psmouse
->dev
);
1346 input_dev
= NULL
; /* so we don't try to free it below */
1347 err_protocol_disconnect
:
1348 if (psmouse
->disconnect
)
1349 psmouse
->disconnect(psmouse
);
1350 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1354 serio_set_drvdata(serio
, NULL
);
1356 input_free_device(input_dev
);
1364 static int psmouse_reconnect(struct serio
*serio
)
1366 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
1367 struct psmouse
*parent
= NULL
;
1368 struct serio_driver
*drv
= serio
->drv
;
1371 if (!drv
|| !psmouse
) {
1372 printk(KERN_DEBUG
"psmouse: reconnect request, but serio is disconnected, ignoring...\n");
1376 mutex_lock(&psmouse_mutex
);
1378 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1379 parent
= serio_get_drvdata(serio
->parent
);
1380 psmouse_deactivate(parent
);
1383 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1385 if (psmouse
->reconnect
) {
1386 if (psmouse
->reconnect(psmouse
))
1388 } else if (psmouse_probe(psmouse
) < 0 ||
1389 psmouse
->type
!= psmouse_extensions(psmouse
,
1390 psmouse_max_proto
, false)) {
1394 /* ok, the device type (and capabilities) match the old one,
1395 * we can continue using it, complete intialization
1397 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1399 psmouse_initialize(psmouse
);
1401 if (parent
&& parent
->pt_activate
)
1402 parent
->pt_activate(parent
);
1404 psmouse_activate(psmouse
);
1408 /* If this is a pass-through port the parent waits to be activated */
1410 psmouse_activate(parent
);
1412 mutex_unlock(&psmouse_mutex
);
1416 static struct serio_device_id psmouse_serio_ids
[] = {
1424 .type
= SERIO_PS_PSTHRU
,
1432 MODULE_DEVICE_TABLE(serio
, psmouse_serio_ids
);
1434 static struct serio_driver psmouse_drv
= {
1438 .description
= DRIVER_DESC
,
1439 .id_table
= psmouse_serio_ids
,
1440 .interrupt
= psmouse_interrupt
,
1441 .connect
= psmouse_connect
,
1442 .reconnect
= psmouse_reconnect
,
1443 .disconnect
= psmouse_disconnect
,
1444 .cleanup
= psmouse_cleanup
,
1447 ssize_t
psmouse_attr_show_helper(struct device
*dev
, struct device_attribute
*devattr
,
1450 struct serio
*serio
= to_serio_port(dev
);
1451 struct psmouse_attribute
*attr
= to_psmouse_attr(devattr
);
1452 struct psmouse
*psmouse
;
1454 psmouse
= serio_get_drvdata(serio
);
1456 return attr
->show(psmouse
, attr
->data
, buf
);
1459 ssize_t
psmouse_attr_set_helper(struct device
*dev
, struct device_attribute
*devattr
,
1460 const char *buf
, size_t count
)
1462 struct serio
*serio
= to_serio_port(dev
);
1463 struct psmouse_attribute
*attr
= to_psmouse_attr(devattr
);
1464 struct psmouse
*psmouse
, *parent
= NULL
;
1467 retval
= mutex_lock_interruptible(&psmouse_mutex
);
1471 psmouse
= serio_get_drvdata(serio
);
1473 if (attr
->protect
) {
1474 if (psmouse
->state
== PSMOUSE_IGNORE
) {
1479 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1480 parent
= serio_get_drvdata(serio
->parent
);
1481 psmouse_deactivate(parent
);
1484 psmouse_deactivate(psmouse
);
1487 retval
= attr
->set(psmouse
, attr
->data
, buf
, count
);
1489 if (attr
->protect
) {
1490 if (retval
!= -ENODEV
)
1491 psmouse_activate(psmouse
);
1494 psmouse_activate(parent
);
1498 mutex_unlock(&psmouse_mutex
);
1503 static ssize_t
psmouse_show_int_attr(struct psmouse
*psmouse
, void *offset
, char *buf
)
1505 unsigned int *field
= (unsigned int *)((char *)psmouse
+ (size_t)offset
);
1507 return sprintf(buf
, "%u\n", *field
);
1510 static ssize_t
psmouse_set_int_attr(struct psmouse
*psmouse
, void *offset
, const char *buf
, size_t count
)
1512 unsigned int *field
= (unsigned int *)((char *)psmouse
+ (size_t)offset
);
1513 unsigned long value
;
1515 if (strict_strtoul(buf
, 10, &value
))
1518 if ((unsigned int)value
!= value
)
1526 static ssize_t
psmouse_attr_show_protocol(struct psmouse
*psmouse
, void *data
, char *buf
)
1528 return sprintf(buf
, "%s\n", psmouse_protocol_by_type(psmouse
->type
)->name
);
1531 static ssize_t
psmouse_attr_set_protocol(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1533 struct serio
*serio
= psmouse
->ps2dev
.serio
;
1534 struct psmouse
*parent
= NULL
;
1535 struct input_dev
*old_dev
, *new_dev
;
1536 const struct psmouse_protocol
*proto
, *old_proto
;
1540 proto
= psmouse_protocol_by_name(buf
, count
);
1544 if (psmouse
->type
== proto
->type
)
1547 new_dev
= input_allocate_device();
1551 while (serio
->child
) {
1554 "psmouse: failed to destroy child port, "
1555 "protocol change aborted.\n");
1556 input_free_device(new_dev
);
1560 mutex_unlock(&psmouse_mutex
);
1561 serio_unregister_child_port(serio
);
1562 mutex_lock(&psmouse_mutex
);
1564 if (serio
->drv
!= &psmouse_drv
) {
1565 input_free_device(new_dev
);
1569 if (psmouse
->type
== proto
->type
) {
1570 input_free_device(new_dev
);
1571 return count
; /* switched by other thread */
1575 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1576 parent
= serio_get_drvdata(serio
->parent
);
1577 if (parent
->pt_deactivate
)
1578 parent
->pt_deactivate(parent
);
1581 old_dev
= psmouse
->dev
;
1582 old_proto
= psmouse_protocol_by_type(psmouse
->type
);
1584 if (psmouse
->disconnect
)
1585 psmouse
->disconnect(psmouse
);
1587 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1589 psmouse
->dev
= new_dev
;
1590 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1592 if (psmouse_switch_protocol(psmouse
, proto
) < 0) {
1593 psmouse_reset(psmouse
);
1594 /* default to PSMOUSE_PS2 */
1595 psmouse_switch_protocol(psmouse
, &psmouse_protocols
[0]);
1598 psmouse_initialize(psmouse
);
1599 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1601 error
= input_register_device(psmouse
->dev
);
1603 if (psmouse
->disconnect
)
1604 psmouse
->disconnect(psmouse
);
1606 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1607 input_free_device(new_dev
);
1608 psmouse
->dev
= old_dev
;
1609 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1610 psmouse_switch_protocol(psmouse
, old_proto
);
1611 psmouse_initialize(psmouse
);
1612 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1617 input_unregister_device(old_dev
);
1619 if (parent
&& parent
->pt_activate
)
1620 parent
->pt_activate(parent
);
1625 static ssize_t
psmouse_attr_set_rate(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1627 unsigned long value
;
1629 if (strict_strtoul(buf
, 10, &value
))
1632 psmouse
->set_rate(psmouse
, value
);
1636 static ssize_t
psmouse_attr_set_resolution(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1638 unsigned long value
;
1640 if (strict_strtoul(buf
, 10, &value
))
1643 psmouse
->set_resolution(psmouse
, value
);
1648 static int psmouse_set_maxproto(const char *val
, struct kernel_param
*kp
)
1650 const struct psmouse_protocol
*proto
;
1655 proto
= psmouse_protocol_by_name(val
, strlen(val
));
1657 if (!proto
|| !proto
->maxproto
)
1660 *((unsigned int *)kp
->arg
) = proto
->type
;
1665 static int psmouse_get_maxproto(char *buffer
, struct kernel_param
*kp
)
1667 int type
= *((unsigned int *)kp
->arg
);
1669 return sprintf(buffer
, "%s", psmouse_protocol_by_type(type
)->name
);
1672 static int __init
psmouse_init(void)
1676 lifebook_module_init();
1677 synaptics_module_init();
1679 kpsmoused_wq
= create_singlethread_workqueue("kpsmoused");
1680 if (!kpsmoused_wq
) {
1681 printk(KERN_ERR
"psmouse: failed to create kpsmoused workqueue\n");
1685 err
= serio_register_driver(&psmouse_drv
);
1687 destroy_workqueue(kpsmoused_wq
);
1692 static void __exit
psmouse_exit(void)
1694 serio_unregister_driver(&psmouse_drv
);
1695 destroy_workqueue(kpsmoused_wq
);
1698 module_init(psmouse_init
);
1699 module_exit(psmouse_exit
);