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"
42 #define DRIVER_DESC "PS/2 mouse driver"
44 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
45 MODULE_DESCRIPTION(DRIVER_DESC
);
46 MODULE_LICENSE("GPL");
48 static unsigned int psmouse_max_proto
= PSMOUSE_AUTO
;
49 static int psmouse_set_maxproto(const char *val
, const struct kernel_param
*);
50 static int psmouse_get_maxproto(char *buffer
, const struct kernel_param
*kp
);
51 static const struct kernel_param_ops param_ops_proto_abbrev
= {
52 .set
= psmouse_set_maxproto
,
53 .get
= psmouse_get_maxproto
,
55 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
56 module_param_named(proto
, psmouse_max_proto
, proto_abbrev
, 0644);
57 MODULE_PARM_DESC(proto
, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
59 static unsigned int psmouse_resolution
= 200;
60 module_param_named(resolution
, psmouse_resolution
, uint
, 0644);
61 MODULE_PARM_DESC(resolution
, "Resolution, in dpi.");
63 static unsigned int psmouse_rate
= 100;
64 module_param_named(rate
, psmouse_rate
, uint
, 0644);
65 MODULE_PARM_DESC(rate
, "Report rate, in reports per second.");
67 static bool psmouse_smartscroll
= true;
68 module_param_named(smartscroll
, psmouse_smartscroll
, bool, 0644);
69 MODULE_PARM_DESC(smartscroll
, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
71 static unsigned int psmouse_resetafter
= 5;
72 module_param_named(resetafter
, psmouse_resetafter
, uint
, 0644);
73 MODULE_PARM_DESC(resetafter
, "Reset device after so many bad packets (0 = never).");
75 static unsigned int psmouse_resync_time
;
76 module_param_named(resync_time
, psmouse_resync_time
, uint
, 0644);
77 MODULE_PARM_DESC(resync_time
, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
79 PSMOUSE_DEFINE_ATTR(protocol
, S_IWUSR
| S_IRUGO
,
81 psmouse_attr_show_protocol
, psmouse_attr_set_protocol
);
82 PSMOUSE_DEFINE_ATTR(rate
, S_IWUSR
| S_IRUGO
,
83 (void *) offsetof(struct psmouse
, rate
),
84 psmouse_show_int_attr
, psmouse_attr_set_rate
);
85 PSMOUSE_DEFINE_ATTR(resolution
, S_IWUSR
| S_IRUGO
,
86 (void *) offsetof(struct psmouse
, resolution
),
87 psmouse_show_int_attr
, psmouse_attr_set_resolution
);
88 PSMOUSE_DEFINE_ATTR(resetafter
, S_IWUSR
| S_IRUGO
,
89 (void *) offsetof(struct psmouse
, resetafter
),
90 psmouse_show_int_attr
, psmouse_set_int_attr
);
91 PSMOUSE_DEFINE_ATTR(resync_time
, S_IWUSR
| S_IRUGO
,
92 (void *) offsetof(struct psmouse
, resync_time
),
93 psmouse_show_int_attr
, psmouse_set_int_attr
);
95 static struct attribute
*psmouse_attributes
[] = {
96 &psmouse_attr_protocol
.dattr
.attr
,
97 &psmouse_attr_rate
.dattr
.attr
,
98 &psmouse_attr_resolution
.dattr
.attr
,
99 &psmouse_attr_resetafter
.dattr
.attr
,
100 &psmouse_attr_resync_time
.dattr
.attr
,
104 static struct attribute_group psmouse_attribute_group
= {
105 .attrs
= psmouse_attributes
,
109 * psmouse_mutex protects all operations changing state of mouse
110 * (connecting, disconnecting, changing rate or resolution via
111 * sysfs). We could use a per-device semaphore but since there
112 * rarely more than one PS/2 mouse connected and since semaphore
113 * is taken in "slow" paths it is not worth it.
115 static DEFINE_MUTEX(psmouse_mutex
);
117 static struct workqueue_struct
*kpsmoused_wq
;
119 struct psmouse_protocol
{
120 enum psmouse_type type
;
122 bool ignore_parity
; /* Protocol should ignore parity errors from KBC */
123 bool try_passthru
; /* Try protocol also on passthrough ports */
126 int (*detect
)(struct psmouse
*, bool);
127 int (*init
)(struct psmouse
*);
130 static void psmouse_report_standard_buttons(struct input_dev
*dev
, u8 buttons
)
132 input_report_key(dev
, BTN_LEFT
, buttons
& BIT(0));
133 input_report_key(dev
, BTN_MIDDLE
, buttons
& BIT(2));
134 input_report_key(dev
, BTN_RIGHT
, buttons
& BIT(1));
138 * psmouse_process_byte() analyzes the PS/2 data stream and reports
139 * relevant events to the input module once full packet has arrived.
141 psmouse_ret_t
psmouse_process_byte(struct psmouse
*psmouse
)
143 struct input_dev
*dev
= psmouse
->dev
;
144 unsigned char *packet
= psmouse
->packet
;
146 if (psmouse
->pktcnt
< psmouse
->pktsize
)
147 return PSMOUSE_GOOD_DATA
;
149 /* Full packet accumulated, process it */
151 switch (psmouse
->type
) {
153 /* IntelliMouse has scroll wheel */
154 input_report_rel(dev
, REL_WHEEL
, -(signed char) packet
[3]);
158 /* Scroll wheel and buttons on IntelliMouse Explorer */
159 switch (packet
[3] & 0xC0) {
160 case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
161 input_report_rel(dev
, REL_WHEEL
, (int) (packet
[3] & 32) - (int) (packet
[3] & 31));
163 case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
164 input_report_rel(dev
, REL_HWHEEL
, (int) (packet
[3] & 32) - (int) (packet
[3] & 31));
168 input_report_rel(dev
, REL_WHEEL
, (int) (packet
[3] & 8) - (int) (packet
[3] & 7));
169 input_report_key(dev
, BTN_SIDE
, (packet
[3] >> 4) & 1);
170 input_report_key(dev
, BTN_EXTRA
, (packet
[3] >> 5) & 1);
176 /* Report scroll buttons on NetMice */
177 input_report_rel(dev
, REL_WHEEL
, -(signed char) packet
[3]);
179 /* Extra buttons on Genius NewNet 3D */
180 input_report_key(dev
, BTN_SIDE
, (packet
[0] >> 6) & 1);
181 input_report_key(dev
, BTN_EXTRA
, (packet
[0] >> 7) & 1);
184 case PSMOUSE_THINKPS
:
185 /* Extra button on ThinkingMouse */
186 input_report_key(dev
, BTN_EXTRA
, (packet
[0] >> 3) & 1);
189 * Without this bit of weirdness moving up gives wildly
192 packet
[1] |= (packet
[0] & 0x40) << 1;
195 case PSMOUSE_CORTRON
:
197 * Cortron PS2 Trackball reports SIDE button in the
198 * 4th bit of the first byte.
200 input_report_key(dev
, BTN_SIDE
, (packet
[0] >> 3) & 1);
208 /* Generic PS/2 Mouse */
209 psmouse_report_standard_buttons(dev
,
210 packet
[0] | psmouse
->extra_buttons
);
212 input_report_rel(dev
, REL_X
, packet
[1] ? (int) packet
[1] - (int) ((packet
[0] << 4) & 0x100) : 0);
213 input_report_rel(dev
, REL_Y
, packet
[2] ? (int) ((packet
[0] << 3) & 0x100) - (int) packet
[2] : 0);
217 return PSMOUSE_FULL_PACKET
;
220 void psmouse_queue_work(struct psmouse
*psmouse
, struct delayed_work
*work
,
223 queue_delayed_work(kpsmoused_wq
, work
, delay
);
227 * __psmouse_set_state() sets new psmouse state and resets all flags.
229 static inline void __psmouse_set_state(struct psmouse
*psmouse
, enum psmouse_state new_state
)
231 psmouse
->state
= new_state
;
232 psmouse
->pktcnt
= psmouse
->out_of_sync_cnt
= 0;
233 psmouse
->ps2dev
.flags
= 0;
234 psmouse
->last
= jiffies
;
238 * psmouse_set_state() sets new psmouse state and resets all flags and
239 * counters while holding serio lock so fighting with interrupt handler
242 void psmouse_set_state(struct psmouse
*psmouse
, enum psmouse_state new_state
)
244 serio_pause_rx(psmouse
->ps2dev
.serio
);
245 __psmouse_set_state(psmouse
, new_state
);
246 serio_continue_rx(psmouse
->ps2dev
.serio
);
250 * psmouse_handle_byte() processes one byte of the input data stream
251 * by calling corresponding protocol handler.
253 static int psmouse_handle_byte(struct psmouse
*psmouse
)
255 psmouse_ret_t rc
= psmouse
->protocol_handler(psmouse
);
258 case PSMOUSE_BAD_DATA
:
259 if (psmouse
->state
== PSMOUSE_ACTIVATED
) {
260 psmouse_warn(psmouse
,
261 "%s at %s lost sync at byte %d\n",
262 psmouse
->name
, psmouse
->phys
,
264 if (++psmouse
->out_of_sync_cnt
== psmouse
->resetafter
) {
265 __psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
266 psmouse_notice(psmouse
,
267 "issuing reconnect request\n");
268 serio_reconnect(psmouse
->ps2dev
.serio
);
275 case PSMOUSE_FULL_PACKET
:
277 if (psmouse
->out_of_sync_cnt
) {
278 psmouse
->out_of_sync_cnt
= 0;
279 psmouse_notice(psmouse
,
280 "%s at %s - driver resynced.\n",
281 psmouse
->name
, psmouse
->phys
);
285 case PSMOUSE_GOOD_DATA
:
291 static void psmouse_handle_oob_data(struct psmouse
*psmouse
, u8 data
)
293 switch (psmouse
->oob_data_type
) {
294 case PSMOUSE_OOB_NONE
:
295 psmouse
->oob_data_type
= data
;
298 case PSMOUSE_OOB_EXTRA_BTNS
:
299 psmouse_report_standard_buttons(psmouse
->dev
, data
);
300 input_sync(psmouse
->dev
);
302 psmouse
->extra_buttons
= data
;
303 psmouse
->oob_data_type
= PSMOUSE_OOB_NONE
;
307 psmouse_warn(psmouse
,
308 "unknown OOB_DATA type: 0x%02x\n",
309 psmouse
->oob_data_type
);
310 psmouse
->oob_data_type
= PSMOUSE_OOB_NONE
;
316 * psmouse_interrupt() handles incoming characters, either passing them
317 * for normal processing or gathering them as command response.
319 static irqreturn_t
psmouse_interrupt(struct serio
*serio
,
320 unsigned char data
, unsigned int flags
)
322 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
324 if (psmouse
->state
== PSMOUSE_IGNORE
)
327 if (unlikely((flags
& SERIO_TIMEOUT
) ||
328 ((flags
& SERIO_PARITY
) && !psmouse
->ignore_parity
))) {
330 if (psmouse
->state
== PSMOUSE_ACTIVATED
)
331 psmouse_warn(psmouse
,
332 "bad data from KBC -%s%s\n",
333 flags
& SERIO_TIMEOUT
? " timeout" : "",
334 flags
& SERIO_PARITY
? " bad parity" : "");
335 ps2_cmd_aborted(&psmouse
->ps2dev
);
339 if (flags
& SERIO_OOB_DATA
) {
340 psmouse_handle_oob_data(psmouse
, data
);
344 if (unlikely(psmouse
->ps2dev
.flags
& PS2_FLAG_ACK
))
345 if (ps2_handle_ack(&psmouse
->ps2dev
, data
))
348 if (unlikely(psmouse
->ps2dev
.flags
& PS2_FLAG_CMD
))
349 if (ps2_handle_response(&psmouse
->ps2dev
, data
))
352 if (psmouse
->state
<= PSMOUSE_RESYNCING
)
355 if (psmouse
->state
== PSMOUSE_ACTIVATED
&&
356 psmouse
->pktcnt
&& time_after(jiffies
, psmouse
->last
+ HZ
/2)) {
357 psmouse_info(psmouse
, "%s at %s lost synchronization, throwing %d bytes away.\n",
358 psmouse
->name
, psmouse
->phys
, psmouse
->pktcnt
);
359 psmouse
->badbyte
= psmouse
->packet
[0];
360 __psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
361 psmouse_queue_work(psmouse
, &psmouse
->resync_work
, 0);
365 psmouse
->packet
[psmouse
->pktcnt
++] = data
;
367 /* Check if this is a new device announcement (0xAA 0x00) */
368 if (unlikely(psmouse
->packet
[0] == PSMOUSE_RET_BAT
&& psmouse
->pktcnt
<= 2)) {
369 if (psmouse
->pktcnt
== 1) {
370 psmouse
->last
= jiffies
;
374 if (psmouse
->packet
[1] == PSMOUSE_RET_ID
||
375 (psmouse
->type
== PSMOUSE_HGPK
&&
376 psmouse
->packet
[1] == PSMOUSE_RET_BAT
)) {
377 __psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
378 serio_reconnect(serio
);
382 /* Not a new device, try processing first byte normally */
384 if (psmouse_handle_byte(psmouse
))
387 psmouse
->packet
[psmouse
->pktcnt
++] = data
;
391 * See if we need to force resync because mouse was idle for
394 if (psmouse
->state
== PSMOUSE_ACTIVATED
&&
395 psmouse
->pktcnt
== 1 && psmouse
->resync_time
&&
396 time_after(jiffies
, psmouse
->last
+ psmouse
->resync_time
* HZ
)) {
397 psmouse
->badbyte
= psmouse
->packet
[0];
398 __psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
399 psmouse_queue_work(psmouse
, &psmouse
->resync_work
, 0);
403 psmouse
->last
= jiffies
;
404 psmouse_handle_byte(psmouse
);
411 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
412 * using sliced syntax, understood by advanced devices, such as Logitech
413 * or Synaptics touchpads. The command is encoded as:
414 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
417 int psmouse_sliced_command(struct psmouse
*psmouse
, unsigned char command
)
421 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
))
424 for (i
= 6; i
>= 0; i
-= 2) {
425 unsigned char d
= (command
>> i
) & 3;
426 if (ps2_command(&psmouse
->ps2dev
, &d
, PSMOUSE_CMD_SETRES
))
434 * psmouse_reset() resets the mouse into power-on state.
436 int psmouse_reset(struct psmouse
*psmouse
)
438 unsigned char param
[2];
440 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_RESET_BAT
))
443 if (param
[0] != PSMOUSE_RET_BAT
&& param
[1] != PSMOUSE_RET_ID
)
450 * Here we set the mouse resolution.
452 void psmouse_set_resolution(struct psmouse
*psmouse
, unsigned int resolution
)
454 static const unsigned char params
[] = { 0, 1, 2, 2, 3 };
457 if (resolution
== 0 || resolution
> 200)
460 p
= params
[resolution
/ 50];
461 ps2_command(&psmouse
->ps2dev
, &p
, PSMOUSE_CMD_SETRES
);
462 psmouse
->resolution
= 25 << p
;
466 * Here we set the mouse report rate.
468 static void psmouse_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
470 static const unsigned char rates
[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
474 while (rates
[i
] > rate
) i
++;
476 ps2_command(&psmouse
->ps2dev
, &r
, PSMOUSE_CMD_SETRATE
);
481 * Here we set the mouse scaling.
483 static void psmouse_set_scale(struct psmouse
*psmouse
, enum psmouse_scale scale
)
485 ps2_command(&psmouse
->ps2dev
, NULL
,
486 scale
== PSMOUSE_SCALE21
? PSMOUSE_CMD_SETSCALE21
:
487 PSMOUSE_CMD_SETSCALE11
);
491 * psmouse_poll() - default poll handler. Everyone except for ALPS uses it.
493 static int psmouse_poll(struct psmouse
*psmouse
)
495 return ps2_command(&psmouse
->ps2dev
, psmouse
->packet
,
496 PSMOUSE_CMD_POLL
| (psmouse
->pktsize
<< 8));
499 static bool psmouse_check_pnp_id(const char *id
, const char * const ids
[])
503 for (i
= 0; ids
[i
]; i
++)
504 if (!strcasecmp(id
, ids
[i
]))
511 * psmouse_matches_pnp_id - check if psmouse matches one of the passed in ids.
513 bool psmouse_matches_pnp_id(struct psmouse
*psmouse
, const char * const ids
[])
515 struct serio
*serio
= psmouse
->ps2dev
.serio
;
516 char *p
, *fw_id_copy
, *save_ptr
;
519 if (strncmp(serio
->firmware_id
, "PNP: ", 5))
522 fw_id_copy
= kstrndup(&serio
->firmware_id
[5],
523 sizeof(serio
->firmware_id
) - 5,
528 save_ptr
= fw_id_copy
;
529 while ((p
= strsep(&fw_id_copy
, " ")) != NULL
) {
530 if (psmouse_check_pnp_id(p
, ids
)) {
541 * Genius NetMouse magic init.
543 static int genius_detect(struct psmouse
*psmouse
, bool set_properties
)
545 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
546 unsigned char param
[4];
549 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
550 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
551 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
552 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
);
553 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
);
555 if (param
[0] != 0x00 || param
[1] != 0x33 || param
[2] != 0x55)
558 if (set_properties
) {
559 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
560 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
561 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
562 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
564 psmouse
->vendor
= "Genius";
565 psmouse
->name
= "Mouse";
566 psmouse
->pktsize
= 4;
573 * IntelliMouse magic init.
575 static int intellimouse_detect(struct psmouse
*psmouse
, bool set_properties
)
577 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
578 unsigned char param
[2];
581 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
583 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
585 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
586 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
591 if (set_properties
) {
592 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
593 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
595 if (!psmouse
->vendor
)
596 psmouse
->vendor
= "Generic";
598 psmouse
->name
= "Wheel Mouse";
599 psmouse
->pktsize
= 4;
606 * Try IntelliMouse/Explorer magic init.
608 static int im_explorer_detect(struct psmouse
*psmouse
, bool set_properties
)
610 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
611 unsigned char param
[2];
613 intellimouse_detect(psmouse
, 0);
616 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
618 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
620 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
621 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
626 /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
628 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
630 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
632 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
634 if (set_properties
) {
635 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
636 __set_bit(REL_WHEEL
, psmouse
->dev
->relbit
);
637 __set_bit(REL_HWHEEL
, psmouse
->dev
->relbit
);
638 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
639 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
641 if (!psmouse
->vendor
)
642 psmouse
->vendor
= "Generic";
644 psmouse
->name
= "Explorer Mouse";
645 psmouse
->pktsize
= 4;
652 * Kensington ThinkingMouse / ExpertMouse magic init.
654 static int thinking_detect(struct psmouse
*psmouse
, bool set_properties
)
656 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
657 unsigned char param
[2];
658 static const unsigned char seq
[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
662 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
664 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
665 for (i
= 0; i
< ARRAY_SIZE(seq
); i
++) {
667 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
);
669 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
);
674 if (set_properties
) {
675 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
676 __set_bit(BTN_EXTRA
, psmouse
->dev
->keybit
);
678 psmouse
->vendor
= "Kensington";
679 psmouse
->name
= "ThinkingMouse";
686 * Bare PS/2 protocol "detection". Always succeeds.
688 static int ps2bare_detect(struct psmouse
*psmouse
, bool set_properties
)
690 if (set_properties
) {
691 if (!psmouse
->vendor
)
692 psmouse
->vendor
= "Generic";
694 psmouse
->name
= "Mouse";
697 * We have no way of figuring true number of buttons so let's
698 * assume that the device has 3.
700 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
707 * Cortron PS/2 protocol detection. There's no special way to detect it, so it
708 * must be forced by sysfs protocol writing.
710 static int cortron_detect(struct psmouse
*psmouse
, bool set_properties
)
712 if (set_properties
) {
713 psmouse
->vendor
= "Cortron";
714 psmouse
->name
= "PS/2 Trackball";
716 __set_bit(BTN_MIDDLE
, psmouse
->dev
->keybit
);
717 __set_bit(BTN_SIDE
, psmouse
->dev
->keybit
);
723 static const struct psmouse_protocol psmouse_protocols
[] = {
729 .ignore_parity
= true,
730 .detect
= ps2bare_detect
,
731 .try_passthru
= true,
733 #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
735 .type
= PSMOUSE_PS2PP
,
738 .detect
= ps2pp_detect
,
742 .type
= PSMOUSE_THINKPS
,
745 .detect
= thinking_detect
,
747 #ifdef CONFIG_MOUSE_PS2_CYPRESS
749 .type
= PSMOUSE_CYPRESS
,
752 .detect
= cypress_detect
,
753 .init
= cypress_init
,
757 .type
= PSMOUSE_GENPS
,
760 .detect
= genius_detect
,
763 .type
= PSMOUSE_IMPS
,
767 .ignore_parity
= true,
768 .detect
= intellimouse_detect
,
769 .try_passthru
= true,
772 .type
= PSMOUSE_IMEX
,
776 .ignore_parity
= true,
777 .detect
= im_explorer_detect
,
778 .try_passthru
= true,
780 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
782 .type
= PSMOUSE_SYNAPTICS
,
784 .alias
= "synaptics",
785 .detect
= synaptics_detect
,
786 .init
= synaptics_init
,
789 .type
= PSMOUSE_SYNAPTICS_RELATIVE
,
790 .name
= "SynRelPS/2",
791 .alias
= "synaptics-relative",
792 .detect
= synaptics_detect
,
793 .init
= synaptics_init_relative
,
796 #ifdef CONFIG_MOUSE_PS2_ALPS
798 .type
= PSMOUSE_ALPS
,
801 .detect
= alps_detect
,
805 #ifdef CONFIG_MOUSE_PS2_LIFEBOOK
807 .type
= PSMOUSE_LIFEBOOK
,
810 .detect
= lifebook_detect
,
811 .init
= lifebook_init
,
814 #ifdef CONFIG_MOUSE_PS2_TRACKPOINT
816 .type
= PSMOUSE_TRACKPOINT
,
818 .alias
= "trackpoint",
819 .detect
= trackpoint_detect
,
820 .try_passthru
= true,
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
,
863 #ifdef CONFIG_MOUSE_PS2_FOCALTECH
865 .type
= PSMOUSE_FOCALTECH
,
866 .name
= "FocalTechPS/2",
867 .alias
= "focaltech",
868 .detect
= focaltech_detect
,
869 .init
= focaltech_init
,
872 #ifdef CONFIG_MOUSE_PS2_VMMOUSE
874 .type
= PSMOUSE_VMMOUSE
,
875 .name
= VMMOUSE_PSNAME
,
877 .detect
= vmmouse_detect
,
878 .init
= vmmouse_init
,
881 #ifdef CONFIG_MOUSE_PS2_BYD
886 .detect
= byd_detect
,
891 .type
= PSMOUSE_AUTO
,
898 static const struct psmouse_protocol
*__psmouse_protocol_by_type(enum psmouse_type type
)
902 for (i
= 0; i
< ARRAY_SIZE(psmouse_protocols
); i
++)
903 if (psmouse_protocols
[i
].type
== type
)
904 return &psmouse_protocols
[i
];
909 static const struct psmouse_protocol
*psmouse_protocol_by_type(enum psmouse_type type
)
911 const struct psmouse_protocol
*proto
;
913 proto
= __psmouse_protocol_by_type(type
);
918 return &psmouse_protocols
[0];
921 static const struct psmouse_protocol
*psmouse_protocol_by_name(const char *name
, size_t len
)
923 const struct psmouse_protocol
*p
;
926 for (i
= 0; i
< ARRAY_SIZE(psmouse_protocols
); i
++) {
927 p
= &psmouse_protocols
[i
];
929 if ((strlen(p
->name
) == len
&& !strncmp(p
->name
, name
, len
)) ||
930 (strlen(p
->alias
) == len
&& !strncmp(p
->alias
, name
, len
)))
931 return &psmouse_protocols
[i
];
938 * Apply default settings to the psmouse structure. Most of them will
939 * be overridden by individual protocol initialization routines.
941 static void psmouse_apply_defaults(struct psmouse
*psmouse
)
943 struct input_dev
*input_dev
= psmouse
->dev
;
945 memset(input_dev
->evbit
, 0, sizeof(input_dev
->evbit
));
946 memset(input_dev
->keybit
, 0, sizeof(input_dev
->keybit
));
947 memset(input_dev
->relbit
, 0, sizeof(input_dev
->relbit
));
948 memset(input_dev
->absbit
, 0, sizeof(input_dev
->absbit
));
949 memset(input_dev
->mscbit
, 0, sizeof(input_dev
->mscbit
));
951 __set_bit(EV_KEY
, input_dev
->evbit
);
952 __set_bit(EV_REL
, input_dev
->evbit
);
954 __set_bit(BTN_LEFT
, input_dev
->keybit
);
955 __set_bit(BTN_RIGHT
, input_dev
->keybit
);
957 __set_bit(REL_X
, input_dev
->relbit
);
958 __set_bit(REL_Y
, input_dev
->relbit
);
960 __set_bit(INPUT_PROP_POINTER
, input_dev
->propbit
);
962 psmouse
->set_rate
= psmouse_set_rate
;
963 psmouse
->set_resolution
= psmouse_set_resolution
;
964 psmouse
->set_scale
= psmouse_set_scale
;
965 psmouse
->poll
= psmouse_poll
;
966 psmouse
->protocol_handler
= psmouse_process_byte
;
967 psmouse
->pktsize
= 3;
968 psmouse
->reconnect
= NULL
;
969 psmouse
->disconnect
= NULL
;
970 psmouse
->cleanup
= NULL
;
971 psmouse
->pt_activate
= NULL
;
972 psmouse
->pt_deactivate
= NULL
;
975 static bool psmouse_try_protocol(struct psmouse
*psmouse
,
976 enum psmouse_type type
,
977 unsigned int *max_proto
,
978 bool set_properties
, bool init_allowed
)
980 const struct psmouse_protocol
*proto
;
982 proto
= __psmouse_protocol_by_type(type
);
986 if (psmouse
->ps2dev
.serio
->id
.type
== SERIO_PS_PSTHRU
&&
987 !proto
->try_passthru
) {
992 psmouse_apply_defaults(psmouse
);
994 if (proto
->detect(psmouse
, set_properties
) != 0)
997 if (set_properties
&& proto
->init
&& init_allowed
) {
998 if (proto
->init(psmouse
) != 0) {
1000 * We detected device, but init failed. Adjust
1001 * max_proto so we only try standard protocols.
1003 if (*max_proto
> PSMOUSE_IMEX
)
1004 *max_proto
= PSMOUSE_IMEX
;
1014 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
1015 * the mouse may have.
1017 static int psmouse_extensions(struct psmouse
*psmouse
,
1018 unsigned int max_proto
, bool set_properties
)
1020 bool synaptics_hardware
= false;
1023 * Always check for focaltech, this is safe as it uses pnp-id
1026 if (psmouse_try_protocol(psmouse
, PSMOUSE_FOCALTECH
,
1027 &max_proto
, set_properties
, false)) {
1028 if (max_proto
> PSMOUSE_IMEX
&&
1029 IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH
) &&
1030 (!set_properties
|| focaltech_init(psmouse
) == 0)) {
1031 return PSMOUSE_FOCALTECH
;
1034 * Restrict psmouse_max_proto so that psmouse_initialize()
1035 * does not try to reset rate and resolution, because even
1036 * that upsets the device.
1037 * This also causes us to basically fall through to basic
1038 * protocol detection, where we fully reset the mouse,
1039 * and set it up as bare PS/2 protocol device.
1041 psmouse_max_proto
= max_proto
= PSMOUSE_PS2
;
1045 * We always check for LifeBook because it does not disturb mouse
1046 * (it only checks DMI information).
1048 if (psmouse_try_protocol(psmouse
, PSMOUSE_LIFEBOOK
, &max_proto
,
1049 set_properties
, max_proto
> PSMOUSE_IMEX
))
1050 return PSMOUSE_LIFEBOOK
;
1052 if (psmouse_try_protocol(psmouse
, PSMOUSE_VMMOUSE
, &max_proto
,
1053 set_properties
, max_proto
> PSMOUSE_IMEX
))
1054 return PSMOUSE_VMMOUSE
;
1057 * Try Kensington ThinkingMouse (we try first, because Synaptics
1058 * probe upsets the ThinkingMouse).
1060 if (max_proto
> PSMOUSE_IMEX
&&
1061 psmouse_try_protocol(psmouse
, PSMOUSE_THINKPS
, &max_proto
,
1062 set_properties
, true)) {
1063 return PSMOUSE_THINKPS
;
1067 * Try Synaptics TouchPad. Note that probing is done even if
1068 * Synaptics protocol support is disabled in config - we need to
1069 * know if it is Synaptics so we can reset it properly after
1070 * probing for IntelliMouse.
1072 if (max_proto
> PSMOUSE_PS2
&&
1073 psmouse_try_protocol(psmouse
, PSMOUSE_SYNAPTICS
, &max_proto
,
1074 set_properties
, false)) {
1075 synaptics_hardware
= true;
1077 if (max_proto
> PSMOUSE_IMEX
) {
1079 * Try activating protocol, but check if support is
1080 * enabled first, since we try detecting Synaptics
1081 * even when protocol is disabled.
1083 if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS
) &&
1084 (!set_properties
|| synaptics_init(psmouse
) == 0)) {
1085 return PSMOUSE_SYNAPTICS
;
1089 * Some Synaptics touchpads can emulate extended
1090 * protocols (like IMPS/2). Unfortunately
1091 * Logitech/Genius probes confuse some firmware
1092 * versions so we'll have to skip them.
1094 max_proto
= PSMOUSE_IMEX
;
1098 * Make sure that touchpad is in relative mode, gestures
1099 * (taps) are enabled.
1101 synaptics_reset(psmouse
);
1105 * Try Cypress Trackpad. We must try it before Finger Sensing Pad
1106 * because Finger Sensing Pad probe upsets some modules of Cypress
1109 if (max_proto
> PSMOUSE_IMEX
&&
1110 psmouse_try_protocol(psmouse
, PSMOUSE_CYPRESS
, &max_proto
,
1111 set_properties
, true)) {
1112 return PSMOUSE_CYPRESS
;
1115 /* Try ALPS TouchPad */
1116 if (max_proto
> PSMOUSE_IMEX
) {
1117 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
1118 if (psmouse_try_protocol(psmouse
, PSMOUSE_ALPS
,
1119 &max_proto
, set_properties
, true))
1120 return PSMOUSE_ALPS
;
1123 /* Try OLPC HGPK touchpad */
1124 if (max_proto
> PSMOUSE_IMEX
&&
1125 psmouse_try_protocol(psmouse
, PSMOUSE_HGPK
, &max_proto
,
1126 set_properties
, true)) {
1127 return PSMOUSE_HGPK
;
1130 /* Try Elantech touchpad */
1131 if (max_proto
> PSMOUSE_IMEX
&&
1132 psmouse_try_protocol(psmouse
, PSMOUSE_ELANTECH
,
1133 &max_proto
, set_properties
, true)) {
1134 return PSMOUSE_ELANTECH
;
1137 if (max_proto
> PSMOUSE_IMEX
) {
1138 if (psmouse_try_protocol(psmouse
, PSMOUSE_GENPS
,
1139 &max_proto
, set_properties
, true))
1140 return PSMOUSE_GENPS
;
1142 if (psmouse_try_protocol(psmouse
, PSMOUSE_PS2PP
,
1143 &max_proto
, set_properties
, true))
1144 return PSMOUSE_PS2PP
;
1146 if (psmouse_try_protocol(psmouse
, PSMOUSE_TRACKPOINT
,
1147 &max_proto
, set_properties
, true))
1148 return PSMOUSE_TRACKPOINT
;
1150 if (psmouse_try_protocol(psmouse
, PSMOUSE_TOUCHKIT_PS2
,
1151 &max_proto
, set_properties
, true))
1152 return PSMOUSE_TOUCHKIT_PS2
;
1156 * Try Finger Sensing Pad. We do it here because its probe upsets
1157 * Trackpoint devices (causing TP_READ_ID command to time out).
1159 if (max_proto
> PSMOUSE_IMEX
&&
1160 psmouse_try_protocol(psmouse
, PSMOUSE_FSP
,
1161 &max_proto
, set_properties
, true)) {
1166 * Reset to defaults in case the device got confused by extended
1167 * protocol probes. Note that we follow up with full reset because
1168 * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
1170 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
1171 psmouse_reset(psmouse
);
1173 if (max_proto
>= PSMOUSE_IMEX
&&
1174 psmouse_try_protocol(psmouse
, PSMOUSE_IMEX
,
1175 &max_proto
, set_properties
, true)) {
1176 return PSMOUSE_IMEX
;
1179 if (max_proto
>= PSMOUSE_IMPS
&&
1180 psmouse_try_protocol(psmouse
, PSMOUSE_IMPS
,
1181 &max_proto
, set_properties
, true)) {
1182 return PSMOUSE_IMPS
;
1186 * Okay, all failed, we have a standard mouse here. The number of
1187 * the buttons is still a question, though. We assume 3.
1189 psmouse_try_protocol(psmouse
, PSMOUSE_PS2
,
1190 &max_proto
, set_properties
, true);
1192 if (synaptics_hardware
) {
1194 * We detected Synaptics hardware but it did not respond to
1195 * IMPS/2 probes. We need to reset the touchpad because if
1196 * there is a track point on the pass through port it could
1197 * get disabled while probing for protocol extensions.
1199 psmouse_reset(psmouse
);
1206 * psmouse_probe() probes for a PS/2 mouse.
1208 static int psmouse_probe(struct psmouse
*psmouse
)
1210 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1211 unsigned char param
[2];
1214 * First, we check if it's a mouse. It should send 0x00 or 0x03 in
1215 * case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
1216 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and
1217 * subsequent ID queries, probably due to a firmware bug.
1220 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
))
1223 if (param
[0] != 0x00 && param
[0] != 0x03 &&
1224 param
[0] != 0x04 && param
[0] != 0xff)
1228 * Then we reset and disable the mouse so that it doesn't generate
1231 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
))
1232 psmouse_warn(psmouse
, "Failed to reset mouse on %s\n",
1233 ps2dev
->serio
->phys
);
1239 * psmouse_initialize() initializes the mouse to a sane state.
1241 static void psmouse_initialize(struct psmouse
*psmouse
)
1244 * We set the mouse report rate, resolution and scaling.
1246 if (psmouse_max_proto
!= PSMOUSE_PS2
) {
1247 psmouse
->set_rate(psmouse
, psmouse
->rate
);
1248 psmouse
->set_resolution(psmouse
, psmouse
->resolution
);
1249 psmouse
->set_scale(psmouse
, PSMOUSE_SCALE11
);
1254 * psmouse_activate() enables the mouse so that we get motion reports from it.
1256 int psmouse_activate(struct psmouse
*psmouse
)
1258 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1259 psmouse_warn(psmouse
, "Failed to enable mouse on %s\n",
1260 psmouse
->ps2dev
.serio
->phys
);
1264 psmouse_set_state(psmouse
, PSMOUSE_ACTIVATED
);
1269 * psmouse_deactivate() puts the mouse into poll mode so that we don't get
1270 * motion reports from it unless we explicitly request it.
1272 int psmouse_deactivate(struct psmouse
*psmouse
)
1274 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
)) {
1275 psmouse_warn(psmouse
, "Failed to deactivate mouse on %s\n",
1276 psmouse
->ps2dev
.serio
->phys
);
1280 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1285 * psmouse_resync() attempts to re-validate current protocol.
1287 static void psmouse_resync(struct work_struct
*work
)
1289 struct psmouse
*parent
= NULL
, *psmouse
=
1290 container_of(work
, struct psmouse
, resync_work
.work
);
1291 struct serio
*serio
= psmouse
->ps2dev
.serio
;
1292 psmouse_ret_t rc
= PSMOUSE_GOOD_DATA
;
1293 bool failed
= false, enabled
= false;
1296 mutex_lock(&psmouse_mutex
);
1298 if (psmouse
->state
!= PSMOUSE_RESYNCING
)
1301 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1302 parent
= serio_get_drvdata(serio
->parent
);
1303 psmouse_deactivate(parent
);
1307 * Some mice don't ACK commands sent while they are in the middle of
1308 * transmitting motion packet. To avoid delay we use ps2_sendbyte()
1309 * instead of ps2_command() which would wait for 200ms for an ACK
1310 * that may never come.
1311 * As an additional quirk ALPS touchpads may not only forget to ACK
1312 * disable command but will stop reporting taps, so if we see that
1313 * mouse at least once ACKs disable we will do full reconnect if ACK
1316 psmouse
->num_resyncs
++;
1318 if (ps2_sendbyte(&psmouse
->ps2dev
, PSMOUSE_CMD_DISABLE
, 20)) {
1319 if (psmouse
->num_resyncs
< 3 || psmouse
->acks_disable_command
)
1322 psmouse
->acks_disable_command
= true;
1325 * Poll the mouse. If it was reset the packet will be shorter than
1326 * psmouse->pktsize and ps2_command will fail. We do not expect and
1327 * do not handle scenario when mouse "upgrades" its protocol while
1328 * disconnected since it would require additional delay. If we ever
1329 * see a mouse that does it we'll adjust the code.
1332 if (psmouse
->poll(psmouse
))
1335 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1336 for (i
= 0; i
< psmouse
->pktsize
; i
++) {
1338 rc
= psmouse
->protocol_handler(psmouse
);
1339 if (rc
!= PSMOUSE_GOOD_DATA
)
1342 if (rc
!= PSMOUSE_FULL_PACKET
)
1344 psmouse_set_state(psmouse
, PSMOUSE_RESYNCING
);
1349 * Now try to enable mouse. We try to do that even if poll failed
1350 * and also repeat our attempts 5 times, otherwise we may be left
1351 * out with disabled mouse.
1353 for (i
= 0; i
< 5; i
++) {
1354 if (!ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1362 psmouse_warn(psmouse
, "failed to re-enable mouse on %s\n",
1363 psmouse
->ps2dev
.serio
->phys
);
1368 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1369 psmouse_info(psmouse
,
1370 "resync failed, issuing reconnect request\n");
1371 serio_reconnect(serio
);
1373 psmouse_set_state(psmouse
, PSMOUSE_ACTIVATED
);
1376 psmouse_activate(parent
);
1378 mutex_unlock(&psmouse_mutex
);
1382 * psmouse_cleanup() resets the mouse into power-on state.
1384 static void psmouse_cleanup(struct serio
*serio
)
1386 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
1387 struct psmouse
*parent
= NULL
;
1389 mutex_lock(&psmouse_mutex
);
1391 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1392 parent
= serio_get_drvdata(serio
->parent
);
1393 psmouse_deactivate(parent
);
1396 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1399 * Disable stream mode so cleanup routine can proceed undisturbed.
1401 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
))
1402 psmouse_warn(psmouse
, "Failed to disable mouse on %s\n",
1403 psmouse
->ps2dev
.serio
->phys
);
1405 if (psmouse
->cleanup
)
1406 psmouse
->cleanup(psmouse
);
1409 * Reset the mouse to defaults (bare PS/2 protocol).
1411 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
1414 * Some boxes, such as HP nx7400, get terribly confused if mouse
1415 * is not fully enabled before suspending/shutting down.
1417 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
);
1420 if (parent
->pt_deactivate
)
1421 parent
->pt_deactivate(parent
);
1423 psmouse_activate(parent
);
1426 mutex_unlock(&psmouse_mutex
);
1430 * psmouse_disconnect() closes and frees.
1432 static void psmouse_disconnect(struct serio
*serio
)
1434 struct psmouse
*psmouse
, *parent
= NULL
;
1436 psmouse
= serio_get_drvdata(serio
);
1438 sysfs_remove_group(&serio
->dev
.kobj
, &psmouse_attribute_group
);
1440 mutex_lock(&psmouse_mutex
);
1442 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1444 /* make sure we don't have a resync in progress */
1445 mutex_unlock(&psmouse_mutex
);
1446 flush_workqueue(kpsmoused_wq
);
1447 mutex_lock(&psmouse_mutex
);
1449 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1450 parent
= serio_get_drvdata(serio
->parent
);
1451 psmouse_deactivate(parent
);
1454 if (psmouse
->disconnect
)
1455 psmouse
->disconnect(psmouse
);
1457 if (parent
&& parent
->pt_deactivate
)
1458 parent
->pt_deactivate(parent
);
1460 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1463 serio_set_drvdata(serio
, NULL
);
1464 input_unregister_device(psmouse
->dev
);
1468 psmouse_activate(parent
);
1470 mutex_unlock(&psmouse_mutex
);
1473 static int psmouse_switch_protocol(struct psmouse
*psmouse
,
1474 const struct psmouse_protocol
*proto
)
1476 const struct psmouse_protocol
*selected_proto
;
1477 struct input_dev
*input_dev
= psmouse
->dev
;
1479 input_dev
->dev
.parent
= &psmouse
->ps2dev
.serio
->dev
;
1481 if (proto
&& (proto
->detect
|| proto
->init
)) {
1482 psmouse_apply_defaults(psmouse
);
1484 if (proto
->detect
&& proto
->detect(psmouse
, true) < 0)
1487 if (proto
->init
&& proto
->init(psmouse
) < 0)
1490 psmouse
->type
= proto
->type
;
1491 selected_proto
= proto
;
1493 psmouse
->type
= psmouse_extensions(psmouse
,
1494 psmouse_max_proto
, true);
1495 selected_proto
= psmouse_protocol_by_type(psmouse
->type
);
1498 psmouse
->ignore_parity
= selected_proto
->ignore_parity
;
1501 * If mouse's packet size is 3 there is no point in polling the
1502 * device in hopes to detect protocol reset - we won't get less
1503 * than 3 bytes response anyhow.
1505 if (psmouse
->pktsize
== 3)
1506 psmouse
->resync_time
= 0;
1509 * Some smart KVMs fake response to POLL command returning just
1510 * 3 bytes and messing up our resync logic, so if initial poll
1511 * fails we won't try polling the device anymore. Hopefully
1512 * such KVM will maintain initially selected protocol.
1514 if (psmouse
->resync_time
&& psmouse
->poll(psmouse
))
1515 psmouse
->resync_time
= 0;
1517 snprintf(psmouse
->devname
, sizeof(psmouse
->devname
), "%s %s %s",
1518 selected_proto
->name
, psmouse
->vendor
, psmouse
->name
);
1520 input_dev
->name
= psmouse
->devname
;
1521 input_dev
->phys
= psmouse
->phys
;
1522 input_dev
->id
.bustype
= BUS_I8042
;
1523 input_dev
->id
.vendor
= 0x0002;
1524 input_dev
->id
.product
= psmouse
->type
;
1525 input_dev
->id
.version
= psmouse
->model
;
1531 * psmouse_connect() is a callback from the serio module when
1532 * an unhandled serio port is found.
1534 static int psmouse_connect(struct serio
*serio
, struct serio_driver
*drv
)
1536 struct psmouse
*psmouse
, *parent
= NULL
;
1537 struct input_dev
*input_dev
;
1538 int retval
= 0, error
= -ENOMEM
;
1540 mutex_lock(&psmouse_mutex
);
1543 * If this is a pass-through port deactivate parent so the device
1544 * connected to this port can be successfully identified
1546 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1547 parent
= serio_get_drvdata(serio
->parent
);
1548 psmouse_deactivate(parent
);
1551 psmouse
= kzalloc(sizeof(struct psmouse
), GFP_KERNEL
);
1552 input_dev
= input_allocate_device();
1553 if (!psmouse
|| !input_dev
)
1556 ps2_init(&psmouse
->ps2dev
, serio
);
1557 INIT_DELAYED_WORK(&psmouse
->resync_work
, psmouse_resync
);
1558 psmouse
->dev
= input_dev
;
1559 snprintf(psmouse
->phys
, sizeof(psmouse
->phys
), "%s/input0", serio
->phys
);
1561 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1563 serio_set_drvdata(serio
, psmouse
);
1565 error
= serio_open(serio
, drv
);
1567 goto err_clear_drvdata
;
1569 /* give PT device some time to settle down before probing */
1570 if (serio
->id
.type
== SERIO_PS_PSTHRU
)
1571 usleep_range(10000, 15000);
1573 if (psmouse_probe(psmouse
) < 0) {
1575 goto err_close_serio
;
1578 psmouse
->rate
= psmouse_rate
;
1579 psmouse
->resolution
= psmouse_resolution
;
1580 psmouse
->resetafter
= psmouse_resetafter
;
1581 psmouse
->resync_time
= parent
? 0 : psmouse_resync_time
;
1582 psmouse
->smartscroll
= psmouse_smartscroll
;
1584 psmouse_switch_protocol(psmouse
, NULL
);
1586 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1587 psmouse_initialize(psmouse
);
1589 error
= input_register_device(psmouse
->dev
);
1591 goto err_protocol_disconnect
;
1593 if (parent
&& parent
->pt_activate
)
1594 parent
->pt_activate(parent
);
1596 error
= sysfs_create_group(&serio
->dev
.kobj
, &psmouse_attribute_group
);
1598 goto err_pt_deactivate
;
1600 psmouse_activate(psmouse
);
1603 /* If this is a pass-through port the parent needs to be re-activated */
1605 psmouse_activate(parent
);
1607 mutex_unlock(&psmouse_mutex
);
1611 if (parent
&& parent
->pt_deactivate
)
1612 parent
->pt_deactivate(parent
);
1613 input_unregister_device(psmouse
->dev
);
1614 input_dev
= NULL
; /* so we don't try to free it below */
1615 err_protocol_disconnect
:
1616 if (psmouse
->disconnect
)
1617 psmouse
->disconnect(psmouse
);
1618 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1622 serio_set_drvdata(serio
, NULL
);
1624 input_free_device(input_dev
);
1631 static int psmouse_reconnect(struct serio
*serio
)
1633 struct psmouse
*psmouse
= serio_get_drvdata(serio
);
1634 struct psmouse
*parent
= NULL
;
1638 mutex_lock(&psmouse_mutex
);
1640 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1641 parent
= serio_get_drvdata(serio
->parent
);
1642 psmouse_deactivate(parent
);
1645 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1647 if (psmouse
->reconnect
) {
1648 if (psmouse
->reconnect(psmouse
))
1651 psmouse_reset(psmouse
);
1653 if (psmouse_probe(psmouse
) < 0)
1656 type
= psmouse_extensions(psmouse
, psmouse_max_proto
, false);
1657 if (psmouse
->type
!= type
)
1662 * OK, the device type (and capabilities) match the old one,
1663 * we can continue using it, complete initialization
1665 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1667 psmouse_initialize(psmouse
);
1669 if (parent
&& parent
->pt_activate
)
1670 parent
->pt_activate(parent
);
1672 psmouse_activate(psmouse
);
1676 /* If this is a pass-through port the parent waits to be activated */
1678 psmouse_activate(parent
);
1680 mutex_unlock(&psmouse_mutex
);
1684 static struct serio_device_id psmouse_serio_ids
[] = {
1692 .type
= SERIO_PS_PSTHRU
,
1700 MODULE_DEVICE_TABLE(serio
, psmouse_serio_ids
);
1702 static struct serio_driver psmouse_drv
= {
1706 .description
= DRIVER_DESC
,
1707 .id_table
= psmouse_serio_ids
,
1708 .interrupt
= psmouse_interrupt
,
1709 .connect
= psmouse_connect
,
1710 .reconnect
= psmouse_reconnect
,
1711 .disconnect
= psmouse_disconnect
,
1712 .cleanup
= psmouse_cleanup
,
1715 ssize_t
psmouse_attr_show_helper(struct device
*dev
, struct device_attribute
*devattr
,
1718 struct serio
*serio
= to_serio_port(dev
);
1719 struct psmouse_attribute
*attr
= to_psmouse_attr(devattr
);
1720 struct psmouse
*psmouse
;
1722 psmouse
= serio_get_drvdata(serio
);
1724 return attr
->show(psmouse
, attr
->data
, buf
);
1727 ssize_t
psmouse_attr_set_helper(struct device
*dev
, struct device_attribute
*devattr
,
1728 const char *buf
, size_t count
)
1730 struct serio
*serio
= to_serio_port(dev
);
1731 struct psmouse_attribute
*attr
= to_psmouse_attr(devattr
);
1732 struct psmouse
*psmouse
, *parent
= NULL
;
1735 retval
= mutex_lock_interruptible(&psmouse_mutex
);
1739 psmouse
= serio_get_drvdata(serio
);
1741 if (attr
->protect
) {
1742 if (psmouse
->state
== PSMOUSE_IGNORE
) {
1747 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1748 parent
= serio_get_drvdata(serio
->parent
);
1749 psmouse_deactivate(parent
);
1752 psmouse_deactivate(psmouse
);
1755 retval
= attr
->set(psmouse
, attr
->data
, buf
, count
);
1757 if (attr
->protect
) {
1758 if (retval
!= -ENODEV
)
1759 psmouse_activate(psmouse
);
1762 psmouse_activate(parent
);
1766 mutex_unlock(&psmouse_mutex
);
1771 static ssize_t
psmouse_show_int_attr(struct psmouse
*psmouse
, void *offset
, char *buf
)
1773 unsigned int *field
= (unsigned int *)((char *)psmouse
+ (size_t)offset
);
1775 return sprintf(buf
, "%u\n", *field
);
1778 static ssize_t
psmouse_set_int_attr(struct psmouse
*psmouse
, void *offset
, const char *buf
, size_t count
)
1780 unsigned int *field
= (unsigned int *)((char *)psmouse
+ (size_t)offset
);
1784 err
= kstrtouint(buf
, 10, &value
);
1793 static ssize_t
psmouse_attr_show_protocol(struct psmouse
*psmouse
, void *data
, char *buf
)
1795 return sprintf(buf
, "%s\n", psmouse_protocol_by_type(psmouse
->type
)->name
);
1798 static ssize_t
psmouse_attr_set_protocol(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1800 struct serio
*serio
= psmouse
->ps2dev
.serio
;
1801 struct psmouse
*parent
= NULL
;
1802 struct input_dev
*old_dev
, *new_dev
;
1803 const struct psmouse_protocol
*proto
, *old_proto
;
1807 proto
= psmouse_protocol_by_name(buf
, count
);
1811 if (psmouse
->type
== proto
->type
)
1814 new_dev
= input_allocate_device();
1818 while (!list_empty(&serio
->children
)) {
1820 psmouse_warn(psmouse
,
1821 "failed to destroy children ports, protocol change aborted.\n");
1822 input_free_device(new_dev
);
1826 mutex_unlock(&psmouse_mutex
);
1827 serio_unregister_child_port(serio
);
1828 mutex_lock(&psmouse_mutex
);
1830 if (serio
->drv
!= &psmouse_drv
) {
1831 input_free_device(new_dev
);
1835 if (psmouse
->type
== proto
->type
) {
1836 input_free_device(new_dev
);
1837 return count
; /* switched by other thread */
1841 if (serio
->parent
&& serio
->id
.type
== SERIO_PS_PSTHRU
) {
1842 parent
= serio_get_drvdata(serio
->parent
);
1843 if (parent
->pt_deactivate
)
1844 parent
->pt_deactivate(parent
);
1847 old_dev
= psmouse
->dev
;
1848 old_proto
= psmouse_protocol_by_type(psmouse
->type
);
1850 if (psmouse
->disconnect
)
1851 psmouse
->disconnect(psmouse
);
1853 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1855 psmouse
->dev
= new_dev
;
1856 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1858 if (psmouse_switch_protocol(psmouse
, proto
) < 0) {
1859 psmouse_reset(psmouse
);
1860 /* default to PSMOUSE_PS2 */
1861 psmouse_switch_protocol(psmouse
, &psmouse_protocols
[0]);
1864 psmouse_initialize(psmouse
);
1865 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1867 error
= input_register_device(psmouse
->dev
);
1869 if (psmouse
->disconnect
)
1870 psmouse
->disconnect(psmouse
);
1872 psmouse_set_state(psmouse
, PSMOUSE_IGNORE
);
1873 input_free_device(new_dev
);
1874 psmouse
->dev
= old_dev
;
1875 psmouse_set_state(psmouse
, PSMOUSE_INITIALIZING
);
1876 psmouse_switch_protocol(psmouse
, old_proto
);
1877 psmouse_initialize(psmouse
);
1878 psmouse_set_state(psmouse
, PSMOUSE_CMD_MODE
);
1883 input_unregister_device(old_dev
);
1885 if (parent
&& parent
->pt_activate
)
1886 parent
->pt_activate(parent
);
1891 static ssize_t
psmouse_attr_set_rate(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1896 err
= kstrtouint(buf
, 10, &value
);
1900 psmouse
->set_rate(psmouse
, value
);
1904 static ssize_t
psmouse_attr_set_resolution(struct psmouse
*psmouse
, void *data
, const char *buf
, size_t count
)
1909 err
= kstrtouint(buf
, 10, &value
);
1913 psmouse
->set_resolution(psmouse
, value
);
1918 static int psmouse_set_maxproto(const char *val
, const struct kernel_param
*kp
)
1920 const struct psmouse_protocol
*proto
;
1925 proto
= psmouse_protocol_by_name(val
, strlen(val
));
1927 if (!proto
|| !proto
->maxproto
)
1930 *((unsigned int *)kp
->arg
) = proto
->type
;
1935 static int psmouse_get_maxproto(char *buffer
, const struct kernel_param
*kp
)
1937 int type
= *((unsigned int *)kp
->arg
);
1939 return sprintf(buffer
, "%s", psmouse_protocol_by_type(type
)->name
);
1942 static int __init
psmouse_init(void)
1946 lifebook_module_init();
1947 synaptics_module_init();
1950 kpsmoused_wq
= alloc_ordered_workqueue("kpsmoused", 0);
1951 if (!kpsmoused_wq
) {
1952 pr_err("failed to create kpsmoused workqueue\n");
1956 err
= serio_register_driver(&psmouse_drv
);
1958 destroy_workqueue(kpsmoused_wq
);
1963 static void __exit
psmouse_exit(void)
1965 serio_unregister_driver(&psmouse_drv
);
1966 destroy_workqueue(kpsmoused_wq
);
1969 module_init(psmouse_init
);
1970 module_exit(psmouse_exit
);