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"
37 #include "cypress_ps2.h"
38 #include "focaltech.h"
40 #define DRIVER_DESC "PS/2 mouse driver"
42 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
43 MODULE_DESCRIPTION(DRIVER_DESC
);
44 MODULE_LICENSE("GPL");
46 static unsigned int psmouse_max_proto
= PSMOUSE_AUTO
;
47 static int psmouse_set_maxproto(const char *val
, const struct kernel_param
*);
48 static int psmouse_get_maxproto(char *buffer
, const struct kernel_param
*kp
);
49 static struct kernel_param_ops param_ops_proto_abbrev
= {
50 .set
= psmouse_set_maxproto
,
51 .get
= psmouse_get_maxproto
,
53 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
54 module_param_named(proto
, psmouse_max_proto
, proto_abbrev
, 0644);
55 MODULE_PARM_DESC(proto
, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
57 static unsigned int psmouse_resolution
= 200;
58 module_param_named(resolution
, psmouse_resolution
, uint
, 0644);
59 MODULE_PARM_DESC(resolution
, "Resolution, in dpi.");
61 static unsigned int psmouse_rate
= 100;
62 module_param_named(rate
, psmouse_rate
, uint
, 0644);
63 MODULE_PARM_DESC(rate
, "Report rate, in reports per second.");
65 static bool psmouse_smartscroll
= 1;
66 module_param_named(smartscroll
, psmouse_smartscroll
, bool, 0644);
67 MODULE_PARM_DESC(smartscroll
, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
69 static unsigned int psmouse_resetafter
= 5;
70 module_param_named(resetafter
, psmouse_resetafter
, uint
, 0644);
71 MODULE_PARM_DESC(resetafter
, "Reset device after so many bad packets (0 = never).");
73 static unsigned int psmouse_resync_time
;
74 module_param_named(resync_time
, psmouse_resync_time
, uint
, 0644);
75 MODULE_PARM_DESC(resync_time
, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
77 PSMOUSE_DEFINE_ATTR(protocol
, S_IWUSR
| S_IRUGO
,
79 psmouse_attr_show_protocol
, psmouse_attr_set_protocol
);
80 PSMOUSE_DEFINE_ATTR(rate
, S_IWUSR
| S_IRUGO
,
81 (void *) offsetof(struct psmouse
, rate
),
82 psmouse_show_int_attr
, psmouse_attr_set_rate
);
83 PSMOUSE_DEFINE_ATTR(resolution
, S_IWUSR
| S_IRUGO
,
84 (void *) offsetof(struct psmouse
, resolution
),
85 psmouse_show_int_attr
, psmouse_attr_set_resolution
);
86 PSMOUSE_DEFINE_ATTR(resetafter
, S_IWUSR
| S_IRUGO
,
87 (void *) offsetof(struct psmouse
, resetafter
),
88 psmouse_show_int_attr
, psmouse_set_int_attr
);
89 PSMOUSE_DEFINE_ATTR(resync_time
, S_IWUSR
| S_IRUGO
,
90 (void *) offsetof(struct psmouse
, resync_time
),
91 psmouse_show_int_attr
, psmouse_set_int_attr
);
93 static struct attribute
*psmouse_attributes
[] = {
94 &psmouse_attr_protocol
.dattr
.attr
,
95 &psmouse_attr_rate
.dattr
.attr
,
96 &psmouse_attr_resolution
.dattr
.attr
,
97 &psmouse_attr_resetafter
.dattr
.attr
,
98 &psmouse_attr_resync_time
.dattr
.attr
,
102 static struct attribute_group psmouse_attribute_group
= {
103 .attrs
= psmouse_attributes
,
107 * psmouse_mutex protects all operations changing state of mouse
108 * (connecting, disconnecting, changing rate or resolution via
109 * sysfs). We could use a per-device semaphore but since there
110 * rarely more than one PS/2 mouse connected and since semaphore
111 * is taken in "slow" paths it is not worth it.
113 static DEFINE_MUTEX(psmouse_mutex
);
115 static struct workqueue_struct
*kpsmoused_wq
;
117 struct psmouse_protocol
{
118 enum psmouse_type type
;
120 bool ignore_parity
; /* Protocol should ignore parity errors from KBC */
123 int (*detect
)(struct psmouse
*, bool);
124 int (*init
)(struct psmouse
*);
128 * psmouse_process_byte() analyzes the PS/2 data stream and reports
129 * relevant events to the input module once full packet has arrived.
132 psmouse_ret_t
psmouse_process_byte(struct psmouse
*psmouse
)
134 struct input_dev
*dev
= psmouse
->dev
;
135 unsigned char *packet
= psmouse
->packet
;
137 if (psmouse
->pktcnt
< psmouse
->pktsize
)
138 return PSMOUSE_GOOD_DATA
;
141 * Full packet accumulated, process it
145 * Scroll wheel on IntelliMice, scroll buttons on NetMice
148 if (psmouse
->type
== PSMOUSE_IMPS
|| psmouse
->type
== PSMOUSE_GENPS
)
149 input_report_rel(dev
, REL_WHEEL
, -(signed char) packet
[3]);
152 * Scroll wheel and buttons on IntelliMouse Explorer
155 if (psmouse
->type
== PSMOUSE_IMEX
) {
156 switch (packet
[3] & 0xC0) {
157 case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
158 input_report_rel(dev
, REL_WHEEL
, (int) (packet
[3] & 32) - (int) (packet
[3] & 31));
160 case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
161 input_report_rel(dev
, REL_HWHEEL
, (int) (packet
[3] & 32) - (int) (packet
[3] & 31));
165 input_report_rel(dev
, REL_WHEEL
, (int) (packet
[3] & 8) - (int) (packet
[3] & 7));
166 input_report_key(dev
, BTN_SIDE
, (packet
[3] >> 4) & 1);
167 input_report_key(dev
, BTN_EXTRA
, (packet
[3] >> 5) & 1);
173 * Extra buttons on Genius NewNet 3D
176 if (psmouse
->type
== PSMOUSE_GENPS
) {
177 input_report_key(dev
, BTN_SIDE
, (packet
[0] >> 6) & 1);
178 input_report_key(dev
, BTN_EXTRA
, (packet
[0] >> 7) & 1);
182 * Extra button on ThinkingMouse
184 if (psmouse
->type
== PSMOUSE_THINKPS
) {
185 input_report_key(dev
, BTN_EXTRA
, (packet
[0] >> 3) & 1);
186 /* Without this bit of weirdness moving up gives wildly high Y changes. */
187 packet
[1] |= (packet
[0] & 0x40) << 1;
191 * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first
194 if (psmouse
->type
== PSMOUSE_CORTRON
) {
195 input_report_key(dev
, BTN_SIDE
, (packet
[0] >> 3) & 1);
203 input_report_key(dev
, BTN_LEFT
, packet
[0] & 1);
204 input_report_key(dev
, BTN_MIDDLE
, (packet
[0] >> 2) & 1);
205 input_report_key(dev
, BTN_RIGHT
, (packet
[0] >> 1) & 1);
207 input_report_rel(dev
, REL_X
, packet
[1] ? (int) packet
[1] - (int) ((packet
[0] << 4) & 0x100) : 0);
208 input_report_rel(dev
, REL_Y
, packet
[2] ? (int) ((packet
[0] << 3) & 0x100) - (int) packet
[2] : 0);
212 return PSMOUSE_FULL_PACKET
;
215 void psmouse_queue_work(struct psmouse
*psmouse
, struct delayed_work
*work
,
218 queue_delayed_work(kpsmoused_wq
, work
, delay
);
222 * __psmouse_set_state() sets new psmouse state and resets all flags.
225 static inline void __psmouse_set_state(struct psmouse
*psmouse
, enum psmouse_state new_state
)
227 psmouse
->state
= new_state
;
228 psmouse
->pktcnt
= psmouse
->out_of_sync_cnt
= 0;
229 psmouse
->ps2dev
.flags
= 0;
230 psmouse
->last
= jiffies
;
235 * psmouse_set_state() sets new psmouse state and resets all flags and
236 * counters while holding serio lock so fighting with interrupt handler
240 void psmouse_set_state(struct psmouse
*psmouse
, enum psmouse_state new_state
)
242 serio_pause_rx(psmouse
->ps2dev
.serio
);
243 __psmouse_set_state(psmouse
, new_state
);
244 serio_continue_rx(psmouse
->ps2dev
.serio
);
248 * psmouse_handle_byte() processes one byte of the input data stream
249 * by calling corresponding protocol handler.
252 static int psmouse_handle_byte(struct psmouse
*psmouse
)
254 psmouse_ret_t rc
= psmouse
->protocol_handler(psmouse
);
257 case PSMOUSE_BAD_DATA
:
258 if (psmouse
->state
== PSMOUSE_ACTIVATED
) {
259 psmouse_warn(psmouse
,
260 "%s at %s lost sync at byte %d\n",
261 psmouse
->name
, psmouse
->phys
,
263 if (++psmouse
->out_of_sync_cnt
== psmouse
->resetafter
) {
264 __psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
265 psmouse_notice(psmouse
,
266 "issuing reconnect request\n");
267 serio_reconnect(psmouse
->ps2dev
.serio
);
274 case PSMOUSE_FULL_PACKET
:
276 if (psmouse
->out_of_sync_cnt
) {
277 psmouse
->out_of_sync_cnt
= 0;
278 psmouse_notice(psmouse
,
279 "%s at %s - driver resynced.\n",
280 psmouse
->name
, psmouse
->phys
);
284 case PSMOUSE_GOOD_DATA
:
291 * psmouse_interrupt() handles incoming characters, either passing them
292 * for normal processing or gathering them as command response.
295 static irqreturn_t
psmouse_interrupt(struct serio
*serio
,
296 unsigned char data
, unsigned int flags
)
298 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
300 if (psmouse
->state
== PSMOUSE_IGNORE
)
303 if (unlikely((flags
& SERIO_TIMEOUT
) ||
304 ((flags
& SERIO_PARITY
) && !psmouse
->ignore_parity
))) {
306 if (psmouse
->state
== PSMOUSE_ACTIVATED
)
307 psmouse_warn(psmouse
,
308 "bad data from KBC -%s%s\n",
309 flags
& SERIO_TIMEOUT
? " timeout" : "",
310 flags
& SERIO_PARITY
? " bad parity" : "");
311 ps2_cmd_aborted(&psmouse
->ps2dev
);
315 if (unlikely(psmouse
->ps2dev
.flags
& PS2_FLAG_ACK
))
316 if (ps2_handle_ack(&psmouse
->ps2dev
, data
))
319 if (unlikely(psmouse
->ps2dev
.flags
& PS2_FLAG_CMD
))
320 if (ps2_handle_response(&psmouse
->ps2dev
, data
))
323 if (psmouse
->state
<= PSMOUSE_RESYNCING
)
326 if (psmouse
->state
== PSMOUSE_ACTIVATED
&&
327 psmouse
->pktcnt
&& time_after(jiffies
, psmouse
->last
+ HZ
/2)) {
328 psmouse_info(psmouse
, "%s at %s lost synchronization, throwing %d bytes away.\n",
329 psmouse
->name
, psmouse
->phys
, psmouse
->pktcnt
);
330 psmouse
->badbyte
= psmouse
->packet
[0];
331 __psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
332 psmouse_queue_work(psmouse
, &psmouse
->resync_work
, 0);
336 psmouse
->packet
[psmouse
->pktcnt
++] = data
;
338 * Check if this is a new device announcement (0xAA 0x00)
340 if (unlikely(psmouse
->packet
[0] == PSMOUSE_RET_BAT
&& psmouse
->pktcnt
<= 2)) {
341 if (psmouse
->pktcnt
== 1) {
342 psmouse
->last
= jiffies
;
346 if (psmouse
->packet
[1] == PSMOUSE_RET_ID
||
347 (psmouse
->type
== PSMOUSE_HGPK
&&
348 psmouse
->packet
[1] == PSMOUSE_RET_BAT
)) {
349 __psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
350 serio_reconnect(serio
);
354 * Not a new device, try processing first byte normally
357 if (psmouse_handle_byte(psmouse
))
360 psmouse
->packet
[psmouse
->pktcnt
++] = data
;
364 * See if we need to force resync because mouse was idle for too long
366 if (psmouse
->state
== PSMOUSE_ACTIVATED
&&
367 psmouse
->pktcnt
== 1 && psmouse
->resync_time
&&
368 time_after(jiffies
, psmouse
->last
+ psmouse
->resync_time
* HZ
)) {
369 psmouse
->badbyte
= psmouse
->packet
[0];
370 __psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
371 psmouse_queue_work(psmouse
, &psmouse
->resync_work
, 0);
375 psmouse
->last
= jiffies
;
376 psmouse_handle_byte(psmouse
);
384 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
385 * using sliced syntax, understood by advanced devices, such as Logitech
386 * or Synaptics touchpads. The command is encoded as:
387 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
390 int psmouse_sliced_command(struct psmouse
*psmouse
, unsigned char command
)
394 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
))
397 for (i
= 6; i
>= 0; i
-= 2) {
398 unsigned char d
= (command
>> i
) & 3;
399 if (ps2_command(&psmouse
->ps2dev
, &d
, PSMOUSE_CMD_SETRES
))
408 * psmouse_reset() resets the mouse into power-on state.
410 int psmouse_reset(struct psmouse
*psmouse
)
412 unsigned char param
[2];
414 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_RESET_BAT
))
417 if (param
[0] != PSMOUSE_RET_BAT
&& param
[1] != PSMOUSE_RET_ID
)
424 * Here we set the mouse resolution.
427 void psmouse_set_resolution(struct psmouse
*psmouse
, unsigned int resolution
)
429 static const unsigned char params
[] = { 0, 1, 2, 2, 3 };
432 if (resolution
== 0 || resolution
> 200)
435 p
= params
[resolution
/ 50];
436 ps2_command(&psmouse
->ps2dev
, &p
, PSMOUSE_CMD_SETRES
);
437 psmouse
->resolution
= 25 << p
;
441 * Here we set the mouse report rate.
444 static void psmouse_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
446 static const unsigned char rates
[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
450 while (rates
[i
] > rate
) i
++;
452 ps2_command(&psmouse
->ps2dev
, &r
, PSMOUSE_CMD_SETRATE
);
457 * Here we set the mouse scaling.
460 static void psmouse_set_scale(struct psmouse
*psmouse
, enum psmouse_scale scale
)
462 ps2_command(&psmouse
->ps2dev
, NULL
,
463 scale
== PSMOUSE_SCALE21
? PSMOUSE_CMD_SETSCALE21
:
464 PSMOUSE_CMD_SETSCALE11
);
468 * psmouse_poll() - default poll handler. Everyone except for ALPS uses it.
471 static int psmouse_poll(struct psmouse
*psmouse
)
473 return ps2_command(&psmouse
->ps2dev
, psmouse
->packet
,
474 PSMOUSE_CMD_POLL
| (psmouse
->pktsize
<< 8));
477 static bool psmouse_check_pnp_id(const char *id
, const char * const ids
[])
481 for (i
= 0; ids
[i
]; i
++)
482 if (!strcasecmp(id
, ids
[i
]))
489 * psmouse_matches_pnp_id - check if psmouse matches one of the passed in ids.
491 bool psmouse_matches_pnp_id(struct psmouse
*psmouse
, const char * const ids
[])
493 struct serio
*serio
= psmouse
->ps2dev
.serio
;
494 char *p
, *fw_id_copy
, *save_ptr
;
497 if (strncmp(serio
->firmware_id
, "PNP: ", 5))
500 fw_id_copy
= kstrndup(&serio
->firmware_id
[5],
501 sizeof(serio
->firmware_id
) - 5,
506 save_ptr
= fw_id_copy
;
507 while ((p
= strsep(&fw_id_copy
, " ")) != NULL
) {
508 if (psmouse_check_pnp_id(p
, ids
)) {
519 * Genius NetMouse magic init.
521 static int genius_detect(struct psmouse
*psmouse
, bool set_properties
)
523 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
524 unsigned char param
[4];
527 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
528 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
529 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
530 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
531 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
);
533 if (param
[0] != 0x00 || param
[1] != 0x33 || param
[2] != 0x55)
536 if (set_properties
) {
537 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
538 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
539 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
540 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
542 psmouse
->vendor
= "Genius";
543 psmouse
->name
= "Mouse";
544 psmouse
->pktsize
= 4;
551 * IntelliMouse magic init.
553 static int intellimouse_detect(struct psmouse
*psmouse
, bool set_properties
)
555 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
556 unsigned char param
[2];
559 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
561 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
563 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
564 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
569 if (set_properties
) {
570 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
571 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
573 if (!psmouse
->vendor
)
574 psmouse
->vendor
= "Generic";
576 psmouse
->name
= "Wheel Mouse";
577 psmouse
->pktsize
= 4;
584 * Try IntelliMouse/Explorer magic init.
586 static int im_explorer_detect(struct psmouse
*psmouse
, bool set_properties
)
588 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
589 unsigned char param
[2];
591 intellimouse_detect(psmouse
, 0);
594 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
596 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
598 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
599 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
604 /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
606 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
608 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
610 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
612 if (set_properties
) {
613 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
614 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
615 __set_bit(REL_HWHEEL
, psmouse
->dev
->relbit
);
616 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
617 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
619 if (!psmouse
->vendor
)
620 psmouse
->vendor
= "Generic";
622 psmouse
->name
= "Explorer Mouse";
623 psmouse
->pktsize
= 4;
630 * Kensington ThinkingMouse / ExpertMouse magic init.
632 static int thinking_detect(struct psmouse
*psmouse
, bool set_properties
)
634 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
635 unsigned char param
[2];
636 static const unsigned char seq
[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
640 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
642 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
643 for (i
= 0; i
< ARRAY_SIZE(seq
); i
++) {
645 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
647 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
652 if (set_properties
) {
653 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
654 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
656 psmouse
->vendor
= "Kensington";
657 psmouse
->name
= "ThinkingMouse";
664 * Bare PS/2 protocol "detection". Always succeeds.
666 static int ps2bare_detect(struct psmouse
*psmouse
, bool set_properties
)
668 if (set_properties
) {
669 if (!psmouse
->vendor
)
670 psmouse
->vendor
= "Generic";
672 psmouse
->name
= "Mouse";
675 * We have no way of figuring true number of buttons so let's
676 * assume that the device has 3.
678 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
685 * Cortron PS/2 protocol detection. There's no special way to detect it, so it
686 * must be forced by sysfs protocol writing.
688 static int cortron_detect(struct psmouse
*psmouse
, bool set_properties
)
690 if (set_properties
) {
691 psmouse
->vendor
= "Cortron";
692 psmouse
->name
= "PS/2 Trackball";
694 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
695 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
702 * Apply default settings to the psmouse structure. Most of them will
703 * be overridden by individual protocol initialization routines.
706 static void psmouse_apply_defaults(struct psmouse
*psmouse
)
708 struct input_dev
*input_dev
= psmouse
->dev
;
710 memset(input_dev
->evbit
, 0, sizeof(input_dev
->evbit
));
711 memset(input_dev
->keybit
, 0, sizeof(input_dev
->keybit
));
712 memset(input_dev
->relbit
, 0, sizeof(input_dev
->relbit
));
713 memset(input_dev
->absbit
, 0, sizeof(input_dev
->absbit
));
714 memset(input_dev
->mscbit
, 0, sizeof(input_dev
->mscbit
));
716 __set_bit(EV_KEY
, input_dev
->evbit
);
717 __set_bit(EV_REL
, input_dev
->evbit
);
719 __set_bit(BTN_LEFT
, input_dev
->keybit
);
720 __set_bit(BTN_RIGHT
, input_dev
->keybit
);
722 __set_bit(REL_X
, input_dev
->relbit
);
723 __set_bit(REL_Y
, input_dev
->relbit
);
725 __set_bit(INPUT_PROP_POINTER
, input_dev
->propbit
);
727 psmouse
->set_rate
= psmouse_set_rate
;
728 psmouse
->set_resolution
= psmouse_set_resolution
;
729 psmouse
->set_scale
= psmouse_set_scale
;
730 psmouse
->poll
= psmouse_poll
;
731 psmouse
->protocol_handler
= psmouse_process_byte
;
732 psmouse
->pktsize
= 3;
733 psmouse
->reconnect
= NULL
;
734 psmouse
->disconnect
= NULL
;
735 psmouse
->cleanup
= NULL
;
736 psmouse
->pt_activate
= NULL
;
737 psmouse
->pt_deactivate
= NULL
;
741 * Apply default settings to the psmouse structure and call specified
742 * protocol detection or initialization routine.
744 static int psmouse_do_detect(int (*detect
)(struct psmouse
*psmouse
,
745 bool set_properties
),
746 struct psmouse
*psmouse
, bool set_properties
)
749 psmouse_apply_defaults(psmouse
);
751 return detect(psmouse
, set_properties
);
755 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
756 * the mouse may have.
759 static int psmouse_extensions(struct psmouse
*psmouse
,
760 unsigned int max_proto
, bool set_properties
)
762 bool synaptics_hardware
= false;
764 /* Always check for focaltech, this is safe as it uses pnp-id matching */
765 if (psmouse_do_detect(focaltech_detect
, psmouse
, set_properties
) == 0) {
766 if (max_proto
> PSMOUSE_IMEX
) {
767 if (!set_properties
|| focaltech_init(psmouse
) == 0) {
768 if (IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH
))
769 return PSMOUSE_FOCALTECH
;
771 * Note that we need to also restrict
772 * psmouse_max_proto so that psmouse_initialize()
773 * does not try to reset rate and resolution,
774 * because even that upsets the device.
776 psmouse_max_proto
= PSMOUSE_PS2
;
783 * We always check for lifebook because it does not disturb mouse
784 * (it only checks DMI information).
786 if (psmouse_do_detect(lifebook_detect
, psmouse
, set_properties
) == 0) {
787 if (max_proto
> PSMOUSE_IMEX
) {
788 if (!set_properties
|| lifebook_init(psmouse
) == 0)
789 return PSMOUSE_LIFEBOOK
;
794 * Try Kensington ThinkingMouse (we try first, because synaptics probe
795 * upsets the thinkingmouse).
798 if (max_proto
> PSMOUSE_IMEX
&&
799 psmouse_do_detect(thinking_detect
, psmouse
, set_properties
) == 0) {
800 return PSMOUSE_THINKPS
;
804 * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol
805 * support is disabled in config - we need to know if it is synaptics so we
806 * can reset it properly after probing for intellimouse.
808 if (max_proto
> PSMOUSE_PS2
&&
809 psmouse_do_detect(synaptics_detect
, psmouse
, set_properties
) == 0) {
810 synaptics_hardware
= true;
812 if (max_proto
> PSMOUSE_IMEX
) {
814 * Try activating protocol, but check if support is enabled first, since
815 * we try detecting Synaptics even when protocol is disabled.
817 if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS
) &&
818 (!set_properties
|| synaptics_init(psmouse
) == 0)) {
819 return PSMOUSE_SYNAPTICS
;
823 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
824 * Unfortunately Logitech/Genius probes confuse some firmware versions so
825 * we'll have to skip them.
827 max_proto
= PSMOUSE_IMEX
;
830 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
832 synaptics_reset(psmouse
);
836 * Try Cypress Trackpad.
837 * Must try it before Finger Sensing Pad because Finger Sensing Pad probe
838 * upsets some modules of Cypress Trackpads.
840 if (max_proto
> PSMOUSE_IMEX
&&
841 cypress_detect(psmouse
, set_properties
) == 0) {
842 if (IS_ENABLED(CONFIG_MOUSE_PS2_CYPRESS
)) {
843 if (cypress_init(psmouse
) == 0)
844 return PSMOUSE_CYPRESS
;
847 * Finger Sensing Pad probe upsets some modules of
848 * Cypress Trackpad, must avoid Finger Sensing Pad
849 * probe if Cypress Trackpad device detected.
854 max_proto
= PSMOUSE_IMEX
;
860 if (max_proto
> PSMOUSE_IMEX
) {
861 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
862 if (psmouse_do_detect(alps_detect
,
863 psmouse
, set_properties
) == 0) {
864 if (!set_properties
|| alps_init(psmouse
) == 0)
867 * Init failed, try basic relative protocols
869 max_proto
= PSMOUSE_IMEX
;
874 * Try OLPC HGPK touchpad.
876 if (max_proto
> PSMOUSE_IMEX
&&
877 psmouse_do_detect(hgpk_detect
, psmouse
, set_properties
) == 0) {
878 if (!set_properties
|| hgpk_init(psmouse
) == 0)
881 * Init failed, try basic relative protocols
883 max_proto
= PSMOUSE_IMEX
;
887 * Try Elantech touchpad.
889 if (max_proto
> PSMOUSE_IMEX
&&
890 psmouse_do_detect(elantech_detect
, psmouse
, set_properties
) == 0) {
891 if (!set_properties
|| elantech_init(psmouse
) == 0)
892 return PSMOUSE_ELANTECH
;
894 * Init failed, try basic relative protocols
896 max_proto
= PSMOUSE_IMEX
;
899 if (max_proto
> PSMOUSE_IMEX
) {
900 if (psmouse_do_detect(genius_detect
,
901 psmouse
, set_properties
) == 0)
902 return PSMOUSE_GENPS
;
904 if (psmouse_do_detect(ps2pp_init
,
905 psmouse
, set_properties
) == 0)
906 return PSMOUSE_PS2PP
;
908 if (psmouse_do_detect(trackpoint_detect
,
909 psmouse
, set_properties
) == 0)
910 return PSMOUSE_TRACKPOINT
;
912 if (psmouse_do_detect(touchkit_ps2_detect
,
913 psmouse
, set_properties
) == 0)
914 return PSMOUSE_TOUCHKIT_PS2
;
918 * Try Finger Sensing Pad. We do it here because its probe upsets
919 * Trackpoint devices (causing TP_READ_ID command to time out).
921 if (max_proto
> PSMOUSE_IMEX
) {
922 if (psmouse_do_detect(fsp_detect
,
923 psmouse
, set_properties
) == 0) {
924 if (!set_properties
|| fsp_init(psmouse
) == 0)
927 * Init failed, try basic relative protocols
929 max_proto
= PSMOUSE_IMEX
;
934 * Reset to defaults in case the device got confused by extended
935 * protocol probes. Note that we follow up with full reset because
936 * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
938 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
939 psmouse_reset(psmouse
);
941 if (max_proto
>= PSMOUSE_IMEX
&&
942 psmouse_do_detect(im_explorer_detect
,
943 psmouse
, set_properties
) == 0) {
947 if (max_proto
>= PSMOUSE_IMPS
&&
948 psmouse_do_detect(intellimouse_detect
,
949 psmouse
, set_properties
) == 0) {
954 * Okay, all failed, we have a standard mouse here. The number of the buttons
955 * is still a question, though. We assume 3.
957 psmouse_do_detect(ps2bare_detect
, psmouse
, set_properties
);
959 if (synaptics_hardware
) {
961 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
962 * We need to reset the touchpad because if there is a track point on the
963 * pass through port it could get disabled while probing for protocol
966 psmouse_reset(psmouse
);
972 static const struct psmouse_protocol psmouse_protocols
[] = {
978 .ignore_parity
= true,
979 .detect
= ps2bare_detect
,
981 #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
983 .type
= PSMOUSE_PS2PP
,
986 .detect
= ps2pp_init
,
990 .type
= PSMOUSE_THINKPS
,
993 .detect
= thinking_detect
,
995 #ifdef CONFIG_MOUSE_PS2_CYPRESS
997 .type
= PSMOUSE_CYPRESS
,
1000 .detect
= cypress_detect
,
1001 .init
= cypress_init
,
1005 .type
= PSMOUSE_GENPS
,
1008 .detect
= genius_detect
,
1011 .type
= PSMOUSE_IMPS
,
1015 .ignore_parity
= true,
1016 .detect
= intellimouse_detect
,
1019 .type
= PSMOUSE_IMEX
,
1023 .ignore_parity
= true,
1024 .detect
= im_explorer_detect
,
1026 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
1028 .type
= PSMOUSE_SYNAPTICS
,
1030 .alias
= "synaptics",
1031 .detect
= synaptics_detect
,
1032 .init
= synaptics_init
,
1035 .type
= PSMOUSE_SYNAPTICS_RELATIVE
,
1036 .name
= "SynRelPS/2",
1037 .alias
= "synaptics-relative",
1038 .detect
= synaptics_detect
,
1039 .init
= synaptics_init_relative
,
1042 #ifdef CONFIG_MOUSE_PS2_ALPS
1044 .type
= PSMOUSE_ALPS
,
1047 .detect
= alps_detect
,
1051 #ifdef CONFIG_MOUSE_PS2_LIFEBOOK
1053 .type
= PSMOUSE_LIFEBOOK
,
1055 .alias
= "lifebook",
1056 .init
= lifebook_init
,
1059 #ifdef CONFIG_MOUSE_PS2_TRACKPOINT
1061 .type
= PSMOUSE_TRACKPOINT
,
1063 .alias
= "trackpoint",
1064 .detect
= trackpoint_detect
,
1067 #ifdef CONFIG_MOUSE_PS2_TOUCHKIT
1069 .type
= PSMOUSE_TOUCHKIT_PS2
,
1070 .name
= "touchkitPS/2",
1071 .alias
= "touchkit",
1072 .detect
= touchkit_ps2_detect
,
1075 #ifdef CONFIG_MOUSE_PS2_OLPC
1077 .type
= PSMOUSE_HGPK
,
1078 .name
= "OLPC HGPK",
1080 .detect
= hgpk_detect
,
1083 #ifdef CONFIG_MOUSE_PS2_ELANTECH
1085 .type
= PSMOUSE_ELANTECH
,
1087 .alias
= "elantech",
1088 .detect
= elantech_detect
,
1089 .init
= elantech_init
,
1092 #ifdef CONFIG_MOUSE_PS2_SENTELIC
1094 .type
= PSMOUSE_FSP
,
1097 .detect
= fsp_detect
,
1102 .type
= PSMOUSE_CORTRON
,
1103 .name
= "CortronPS/2",
1105 .detect
= cortron_detect
,
1107 #ifdef CONFIG_MOUSE_PS2_FOCALTECH
1109 .type
= PSMOUSE_FOCALTECH
,
1110 .name
= "FocalTechPS/2",
1111 .alias
= "focaltech",
1112 .detect
= focaltech_detect
,
1113 .init
= focaltech_init
,
1117 .type
= PSMOUSE_AUTO
,
1124 static const struct psmouse_protocol
*psmouse_protocol_by_type(enum psmouse_type type
)
1128 for (i
= 0; i
< ARRAY_SIZE(psmouse_protocols
); i
++)
1129 if (psmouse_protocols
[i
].type
== type
)
1130 return &psmouse_protocols
[i
];
1133 return &psmouse_protocols
[0];
1136 static const struct psmouse_protocol
*psmouse_protocol_by_name(const char *name
, size_t len
)
1138 const struct psmouse_protocol
*p
;
1141 for (i
= 0; i
< ARRAY_SIZE(psmouse_protocols
); i
++) {
1142 p
= &psmouse_protocols
[i
];
1144 if ((strlen(p
->name
) == len
&& !strncmp(p
->name
, name
, len
)) ||
1145 (strlen(p
->alias
) == len
&& !strncmp(p
->alias
, name
, len
)))
1146 return &psmouse_protocols
[i
];
1154 * psmouse_probe() probes for a PS/2 mouse.
1157 static int psmouse_probe(struct psmouse
*psmouse
)
1159 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1160 unsigned char param
[2];
1163 * First, we check if it's a mouse. It should send 0x00 or 0x03
1164 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
1165 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
1166 * ID queries, probably due to a firmware bug.
1170 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
))
1173 if (param
[0] != 0x00 && param
[0] != 0x03 &&
1174 param
[0] != 0x04 && param
[0] != 0xff)
1178 * Then we reset and disable the mouse so that it doesn't generate events.
1181 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
))
1182 psmouse_warn(psmouse
, "Failed to reset mouse on %s\n",
1183 ps2dev
->serio
->phys
);
1189 * psmouse_initialize() initializes the mouse to a sane state.
1192 static void psmouse_initialize(struct psmouse
*psmouse
)
1195 * We set the mouse report rate, resolution and scaling.
1198 if (psmouse_max_proto
!= PSMOUSE_PS2
) {
1199 psmouse
->set_rate(psmouse
, psmouse
->rate
);
1200 psmouse
->set_resolution(psmouse
, psmouse
->resolution
);
1201 psmouse
->set_scale(psmouse
, PSMOUSE_SCALE11
);
1206 * psmouse_activate() enables the mouse so that we get motion reports from it.
1209 int psmouse_activate(struct psmouse
*psmouse
)
1211 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1212 psmouse_warn(psmouse
, "Failed to enable mouse on %s\n",
1213 psmouse
->ps2dev
.serio
->phys
);
1217 psmouse_set_state(psmouse
, PSMOUSE_ACTIVATED
);
1222 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
1223 * reports from it unless we explicitly request it.
1226 int psmouse_deactivate(struct psmouse
*psmouse
)
1228 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
)) {
1229 psmouse_warn(psmouse
, "Failed to deactivate mouse on %s\n",
1230 psmouse
->ps2dev
.serio
->phys
);
1234 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1240 * psmouse_resync() attempts to re-validate current protocol.
1243 static void psmouse_resync(struct work_struct
*work
)
1245 struct psmouse
*parent
= NULL
, *psmouse
=
1246 container_of(work
, struct psmouse
, resync_work
.work
);
1247 struct serio
*serio
= psmouse
->ps2dev
.serio
;
1248 psmouse_ret_t rc
= PSMOUSE_GOOD_DATA
;
1249 bool failed
= false, enabled
= false;
1252 mutex_lock(&psmouse_mutex
);
1254 if (psmouse
->state
!= PSMOUSE_RESYNCING
)
1257 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1258 parent
= serio_get_drvdata(serio
->parent
);
1259 psmouse_deactivate(parent
);
1263 * Some mice don't ACK commands sent while they are in the middle of
1264 * transmitting motion packet. To avoid delay we use ps2_sendbyte()
1265 * instead of ps2_command() which would wait for 200ms for an ACK
1266 * that may never come.
1267 * As an additional quirk ALPS touchpads may not only forget to ACK
1268 * disable command but will stop reporting taps, so if we see that
1269 * mouse at least once ACKs disable we will do full reconnect if ACK
1272 psmouse
->num_resyncs
++;
1274 if (ps2_sendbyte(&psmouse
->ps2dev
, PSMOUSE_CMD_DISABLE
, 20)) {
1275 if (psmouse
->num_resyncs
< 3 || psmouse
->acks_disable_command
)
1278 psmouse
->acks_disable_command
= true;
1281 * Poll the mouse. If it was reset the packet will be shorter than
1282 * psmouse->pktsize and ps2_command will fail. We do not expect and
1283 * do not handle scenario when mouse "upgrades" its protocol while
1284 * disconnected since it would require additional delay. If we ever
1285 * see a mouse that does it we'll adjust the code.
1288 if (psmouse
->poll(psmouse
))
1291 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1292 for (i
= 0; i
< psmouse
->pktsize
; i
++) {
1294 rc
= psmouse
->protocol_handler(psmouse
);
1295 if (rc
!= PSMOUSE_GOOD_DATA
)
1298 if (rc
!= PSMOUSE_FULL_PACKET
)
1300 psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
1304 * Now try to enable mouse. We try to do that even if poll failed and also
1305 * repeat our attempts 5 times, otherwise we may be left out with disabled
1308 for (i
= 0; i
< 5; i
++) {
1309 if (!ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1317 psmouse_warn(psmouse
, "failed to re-enable mouse on %s\n",
1318 psmouse
->ps2dev
.serio
->phys
);
1323 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1324 psmouse_info(psmouse
,
1325 "resync failed, issuing reconnect request\n");
1326 serio_reconnect(serio
);
1328 psmouse_set_state(psmouse
, PSMOUSE_ACTIVATED
);
1331 psmouse_activate(parent
);
1333 mutex_unlock(&psmouse_mutex
);
1337 * psmouse_cleanup() resets the mouse into power-on state.
1340 static void psmouse_cleanup(struct serio
*serio
)
1342 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
1343 struct psmouse
*parent
= NULL
;
1345 mutex_lock(&psmouse_mutex
);
1347 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1348 parent
= serio_get_drvdata(serio
->parent
);
1349 psmouse_deactivate(parent
);
1352 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1355 * Disable stream mode so cleanup routine can proceed undisturbed.
1357 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
))
1358 psmouse_warn(psmouse
, "Failed to disable mouse on %s\n",
1359 psmouse
->ps2dev
.serio
->phys
);
1361 if (psmouse
->cleanup
)
1362 psmouse
->cleanup(psmouse
);
1365 * Reset the mouse to defaults (bare PS/2 protocol).
1367 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
1370 * Some boxes, such as HP nx7400, get terribly confused if mouse
1371 * is not fully enabled before suspending/shutting down.
1373 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
);
1376 if (parent
->pt_deactivate
)
1377 parent
->pt_deactivate(parent
);
1379 psmouse_activate(parent
);
1382 mutex_unlock(&psmouse_mutex
);
1386 * psmouse_disconnect() closes and frees.
1389 static void psmouse_disconnect(struct serio
*serio
)
1391 struct psmouse
*psmouse
, *parent
= NULL
;
1393 psmouse
= serio_get_drvdata(serio
);
1395 sysfs_remove_group(&serio
->dev
.kobj
, &psmouse_attribute_group
);
1397 mutex_lock(&psmouse_mutex
);
1399 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1401 /* make sure we don't have a resync in progress */
1402 mutex_unlock(&psmouse_mutex
);
1403 flush_workqueue(kpsmoused_wq
);
1404 mutex_lock(&psmouse_mutex
);
1406 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1407 parent
= serio_get_drvdata(serio
->parent
);
1408 psmouse_deactivate(parent
);
1411 if (psmouse
->disconnect
)
1412 psmouse
->disconnect(psmouse
);
1414 if (parent
&& parent
->pt_deactivate
)
1415 parent
->pt_deactivate(parent
);
1417 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1420 serio_set_drvdata(serio
, NULL
);
1421 input_unregister_device(psmouse
->dev
);
1425 psmouse_activate(parent
);
1427 mutex_unlock(&psmouse_mutex
);
1430 static int psmouse_switch_protocol(struct psmouse
*psmouse
,
1431 const struct psmouse_protocol
*proto
)
1433 const struct psmouse_protocol
*selected_proto
;
1434 struct input_dev
*input_dev
= psmouse
->dev
;
1436 input_dev
->dev
.parent
= &psmouse
->ps2dev
.serio
->dev
;
1438 if (proto
&& (proto
->detect
|| proto
->init
)) {
1439 psmouse_apply_defaults(psmouse
);
1441 if (proto
->detect
&& proto
->detect(psmouse
, true) < 0)
1444 if (proto
->init
&& proto
->init(psmouse
) < 0)
1447 psmouse
->type
= proto
->type
;
1448 selected_proto
= proto
;
1450 psmouse
->type
= psmouse_extensions(psmouse
,
1451 psmouse_max_proto
, true);
1452 selected_proto
= psmouse_protocol_by_type(psmouse
->type
);
1455 psmouse
->ignore_parity
= selected_proto
->ignore_parity
;
1458 * If mouse's packet size is 3 there is no point in polling the
1459 * device in hopes to detect protocol reset - we won't get less
1460 * than 3 bytes response anyhow.
1462 if (psmouse
->pktsize
== 3)
1463 psmouse
->resync_time
= 0;
1466 * Some smart KVMs fake response to POLL command returning just
1467 * 3 bytes and messing up our resync logic, so if initial poll
1468 * fails we won't try polling the device anymore. Hopefully
1469 * such KVM will maintain initially selected protocol.
1471 if (psmouse
->resync_time
&& psmouse
->poll(psmouse
))
1472 psmouse
->resync_time
= 0;
1474 snprintf(psmouse
->devname
, sizeof(psmouse
->devname
), "%s %s %s",
1475 selected_proto
->name
, psmouse
->vendor
, psmouse
->name
);
1477 input_dev
->name
= psmouse
->devname
;
1478 input_dev
->phys
= psmouse
->phys
;
1479 input_dev
->id
.bustype
= BUS_I8042
;
1480 input_dev
->id
.vendor
= 0x0002;
1481 input_dev
->id
.product
= psmouse
->type
;
1482 input_dev
->id
.version
= psmouse
->model
;
1488 * psmouse_connect() is a callback from the serio module when
1489 * an unhandled serio port is found.
1491 static int psmouse_connect(struct serio
*serio
, struct serio_driver
*drv
)
1493 struct psmouse
*psmouse
, *parent
= NULL
;
1494 struct input_dev
*input_dev
;
1495 int retval
= 0, error
= -ENOMEM
;
1497 mutex_lock(&psmouse_mutex
);
1500 * If this is a pass-through port deactivate parent so the device
1501 * connected to this port can be successfully identified
1503 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1504 parent
= serio_get_drvdata(serio
->parent
);
1505 psmouse_deactivate(parent
);
1508 psmouse
= kzalloc(sizeof(struct psmouse
), GFP_KERNEL
);
1509 input_dev
= input_allocate_device();
1510 if (!psmouse
|| !input_dev
)
1513 ps2_init(&psmouse
->ps2dev
, serio
);
1514 INIT_DELAYED_WORK(&psmouse
->resync_work
, psmouse_resync
);
1515 psmouse
->dev
= input_dev
;
1516 snprintf(psmouse
->phys
, sizeof(psmouse
->phys
), "%s/input0", serio
->phys
);
1518 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1520 serio_set_drvdata(serio
, psmouse
);
1522 error
= serio_open(serio
, drv
);
1524 goto err_clear_drvdata
;
1526 if (psmouse_probe(psmouse
) < 0) {
1528 goto err_close_serio
;
1531 psmouse
->rate
= psmouse_rate
;
1532 psmouse
->resolution
= psmouse_resolution
;
1533 psmouse
->resetafter
= psmouse_resetafter
;
1534 psmouse
->resync_time
= parent
? 0 : psmouse_resync_time
;
1535 psmouse
->smartscroll
= psmouse_smartscroll
;
1537 psmouse_switch_protocol(psmouse
, NULL
);
1539 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1540 psmouse_initialize(psmouse
);
1542 error
= input_register_device(psmouse
->dev
);
1544 goto err_protocol_disconnect
;
1546 if (parent
&& parent
->pt_activate
)
1547 parent
->pt_activate(parent
);
1549 error
= sysfs_create_group(&serio
->dev
.kobj
, &psmouse_attribute_group
);
1551 goto err_pt_deactivate
;
1553 psmouse_activate(psmouse
);
1556 /* If this is a pass-through port the parent needs to be re-activated */
1558 psmouse_activate(parent
);
1560 mutex_unlock(&psmouse_mutex
);
1564 if (parent
&& parent
->pt_deactivate
)
1565 parent
->pt_deactivate(parent
);
1566 input_unregister_device(psmouse
->dev
);
1567 input_dev
= NULL
; /* so we don't try to free it below */
1568 err_protocol_disconnect
:
1569 if (psmouse
->disconnect
)
1570 psmouse
->disconnect(psmouse
);
1571 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1575 serio_set_drvdata(serio
, NULL
);
1577 input_free_device(input_dev
);
1585 static int psmouse_reconnect(struct serio
*serio
)
1587 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
1588 struct psmouse
*parent
= NULL
;
1592 mutex_lock(&psmouse_mutex
);
1594 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1595 parent
= serio_get_drvdata(serio
->parent
);
1596 psmouse_deactivate(parent
);
1599 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1601 if (psmouse
->reconnect
) {
1602 if (psmouse
->reconnect(psmouse
))
1605 psmouse_reset(psmouse
);
1607 if (psmouse_probe(psmouse
) < 0)
1610 type
= psmouse_extensions(psmouse
, psmouse_max_proto
, false);
1611 if (psmouse
->type
!= type
)
1616 * OK, the device type (and capabilities) match the old one,
1617 * we can continue using it, complete initialization
1619 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1621 psmouse_initialize(psmouse
);
1623 if (parent
&& parent
->pt_activate
)
1624 parent
->pt_activate(parent
);
1626 psmouse_activate(psmouse
);
1630 /* If this is a pass-through port the parent waits to be activated */
1632 psmouse_activate(parent
);
1634 mutex_unlock(&psmouse_mutex
);
1638 static struct serio_device_id psmouse_serio_ids
[] = {
1646 .type
= SERIO_PS_PSTHRU
,
1654 MODULE_DEVICE_TABLE(serio
, psmouse_serio_ids
);
1656 static struct serio_driver psmouse_drv
= {
1660 .description
= DRIVER_DESC
,
1661 .id_table
= psmouse_serio_ids
,
1662 .interrupt
= psmouse_interrupt
,
1663 .connect
= psmouse_connect
,
1664 .reconnect
= psmouse_reconnect
,
1665 .disconnect
= psmouse_disconnect
,
1666 .cleanup
= psmouse_cleanup
,
1669 ssize_t
psmouse_attr_show_helper(struct device
*dev
, struct device_attribute
*devattr
,
1672 struct serio
*serio
= to_serio_port(dev
);
1673 struct psmouse_attribute
*attr
= to_psmouse_attr(devattr
);
1674 struct psmouse
*psmouse
;
1676 psmouse
= serio_get_drvdata(serio
);
1678 return attr
->show(psmouse
, attr
->data
, buf
);
1681 ssize_t
psmouse_attr_set_helper(struct device
*dev
, struct device_attribute
*devattr
,
1682 const char *buf
, size_t count
)
1684 struct serio
*serio
= to_serio_port(dev
);
1685 struct psmouse_attribute
*attr
= to_psmouse_attr(devattr
);
1686 struct psmouse
*psmouse
, *parent
= NULL
;
1689 retval
= mutex_lock_interruptible(&psmouse_mutex
);
1693 psmouse
= serio_get_drvdata(serio
);
1695 if (attr
->protect
) {
1696 if (psmouse
->state
== PSMOUSE_IGNORE
) {
1701 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1702 parent
= serio_get_drvdata(serio
->parent
);
1703 psmouse_deactivate(parent
);
1706 psmouse_deactivate(psmouse
);
1709 retval
= attr
->set(psmouse
, attr
->data
, buf
, count
);
1711 if (attr
->protect
) {
1712 if (retval
!= -ENODEV
)
1713 psmouse_activate(psmouse
);
1716 psmouse_activate(parent
);
1720 mutex_unlock(&psmouse_mutex
);
1725 static ssize_t
psmouse_show_int_attr(struct psmouse
*psmouse
, void *offset
, char *buf
)
1727 unsigned int *field
= (unsigned int *)((char *)psmouse
+ (size_t)offset
);
1729 return sprintf(buf
, "%u\n", *field
);
1732 static ssize_t
psmouse_set_int_attr(struct psmouse
*psmouse
, void *offset
, const char *buf
, size_t count
)
1734 unsigned int *field
= (unsigned int *)((char *)psmouse
+ (size_t)offset
);
1738 err
= kstrtouint(buf
, 10, &value
);
1747 static ssize_t
psmouse_attr_show_protocol(struct psmouse
*psmouse
, void *data
, char *buf
)
1749 return sprintf(buf
, "%s\n", psmouse_protocol_by_type(psmouse
->type
)->name
);
1752 static ssize_t
psmouse_attr_set_protocol(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1754 struct serio
*serio
= psmouse
->ps2dev
.serio
;
1755 struct psmouse
*parent
= NULL
;
1756 struct input_dev
*old_dev
, *new_dev
;
1757 const struct psmouse_protocol
*proto
, *old_proto
;
1761 proto
= psmouse_protocol_by_name(buf
, count
);
1765 if (psmouse
->type
== proto
->type
)
1768 new_dev
= input_allocate_device();
1772 while (!list_empty(&serio
->children
)) {
1774 psmouse_warn(psmouse
,
1775 "failed to destroy children ports, protocol change aborted.\n");
1776 input_free_device(new_dev
);
1780 mutex_unlock(&psmouse_mutex
);
1781 serio_unregister_child_port(serio
);
1782 mutex_lock(&psmouse_mutex
);
1784 if (serio
->drv
!= &psmouse_drv
) {
1785 input_free_device(new_dev
);
1789 if (psmouse
->type
== proto
->type
) {
1790 input_free_device(new_dev
);
1791 return count
; /* switched by other thread */
1795 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1796 parent
= serio_get_drvdata(serio
->parent
);
1797 if (parent
->pt_deactivate
)
1798 parent
->pt_deactivate(parent
);
1801 old_dev
= psmouse
->dev
;
1802 old_proto
= psmouse_protocol_by_type(psmouse
->type
);
1804 if (psmouse
->disconnect
)
1805 psmouse
->disconnect(psmouse
);
1807 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1809 psmouse
->dev
= new_dev
;
1810 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1812 if (psmouse_switch_protocol(psmouse
, proto
) < 0) {
1813 psmouse_reset(psmouse
);
1814 /* default to PSMOUSE_PS2 */
1815 psmouse_switch_protocol(psmouse
, &psmouse_protocols
[0]);
1818 psmouse_initialize(psmouse
);
1819 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1821 error
= input_register_device(psmouse
->dev
);
1823 if (psmouse
->disconnect
)
1824 psmouse
->disconnect(psmouse
);
1826 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1827 input_free_device(new_dev
);
1828 psmouse
->dev
= old_dev
;
1829 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1830 psmouse_switch_protocol(psmouse
, old_proto
);
1831 psmouse_initialize(psmouse
);
1832 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1837 input_unregister_device(old_dev
);
1839 if (parent
&& parent
->pt_activate
)
1840 parent
->pt_activate(parent
);
1845 static ssize_t
psmouse_attr_set_rate(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1850 err
= kstrtouint(buf
, 10, &value
);
1854 psmouse
->set_rate(psmouse
, value
);
1858 static ssize_t
psmouse_attr_set_resolution(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1863 err
= kstrtouint(buf
, 10, &value
);
1867 psmouse
->set_resolution(psmouse
, value
);
1872 static int psmouse_set_maxproto(const char *val
, const struct kernel_param
*kp
)
1874 const struct psmouse_protocol
*proto
;
1879 proto
= psmouse_protocol_by_name(val
, strlen(val
));
1881 if (!proto
|| !proto
->maxproto
)
1884 *((unsigned int *)kp
->arg
) = proto
->type
;
1889 static int psmouse_get_maxproto(char *buffer
, const struct kernel_param
*kp
)
1891 int type
= *((unsigned int *)kp
->arg
);
1893 return sprintf(buffer
, "%s", psmouse_protocol_by_type(type
)->name
);
1896 static int __init
psmouse_init(void)
1900 lifebook_module_init();
1901 synaptics_module_init();
1904 kpsmoused_wq
= create_singlethread_workqueue("kpsmoused");
1905 if (!kpsmoused_wq
) {
1906 pr_err("failed to create kpsmoused workqueue\n");
1910 err
= serio_register_driver(&psmouse_drv
);
1912 destroy_workqueue(kpsmoused_wq
);
1917 static void __exit
psmouse_exit(void)
1919 serio_unregister_driver(&psmouse_drv
);
1920 destroy_workqueue(kpsmoused_wq
);
1923 module_init(psmouse_init
);
1924 module_exit(psmouse_exit
);