2 * Synaptics TouchPad PS/2 mouse driver
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
23 * Trademarks are the property of their respective owners.
26 #include <linux/module.h>
27 #include <linux/dmi.h>
28 #include <linux/input/mt.h>
29 #include <linux/serio.h>
30 #include <linux/libps2.h>
31 #include <linux/slab.h>
33 #include "synaptics.h"
36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
37 * section 2.3.2, which says that they should be valid regardless of the
38 * actual size of the sensor.
39 * Note that newer firmware allows querying device for maximum useable
42 #define XMIN_NOMINAL 1472
43 #define XMAX_NOMINAL 5472
44 #define YMIN_NOMINAL 1408
45 #define YMAX_NOMINAL 4448
48 * Synaptics touchpads report the y coordinate from bottom to top, which is
49 * opposite from what userspace expects.
50 * This function is used to invert y before reporting.
52 static int synaptics_invert_y(int y
)
54 return YMAX_NOMINAL
+ YMIN_NOMINAL
- y
;
58 /*****************************************************************************
59 * Stuff we need even when we do not want native Synaptics support
60 ****************************************************************************/
63 * Set the synaptics touchpad mode byte by special commands
65 static int synaptics_mode_cmd(struct psmouse
*psmouse
, unsigned char mode
)
67 unsigned char param
[1];
69 if (psmouse_sliced_command(psmouse
, mode
))
71 param
[0] = SYN_PS_SET_MODE2
;
72 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_SETRATE
))
77 int synaptics_detect(struct psmouse
*psmouse
, bool set_properties
)
79 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
80 unsigned char param
[4];
84 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
85 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
86 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
87 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
88 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
);
94 psmouse
->vendor
= "Synaptics";
95 psmouse
->name
= "TouchPad";
101 void synaptics_reset(struct psmouse
*psmouse
)
103 /* reset touchpad back to relative mode, gestures enabled */
104 synaptics_mode_cmd(psmouse
, 0);
107 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
109 /*****************************************************************************
110 * Synaptics communications functions
111 ****************************************************************************/
114 * Send a command to the synpatics touchpad by special commands
116 static int synaptics_send_cmd(struct psmouse
*psmouse
, unsigned char c
, unsigned char *param
)
118 if (psmouse_sliced_command(psmouse
, c
))
120 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
126 * Read the model-id bytes from the touchpad
127 * see also SYN_MODEL_* macros
129 static int synaptics_model_id(struct psmouse
*psmouse
)
131 struct synaptics_data
*priv
= psmouse
->private;
134 if (synaptics_send_cmd(psmouse
, SYN_QUE_MODEL
, mi
))
136 priv
->model_id
= (mi
[0]<<16) | (mi
[1]<<8) | mi
[2];
141 * Read the capability-bits from the touchpad
142 * see also the SYN_CAP_* macros
144 static int synaptics_capability(struct psmouse
*psmouse
)
146 struct synaptics_data
*priv
= psmouse
->private;
147 unsigned char cap
[3];
149 if (synaptics_send_cmd(psmouse
, SYN_QUE_CAPABILITIES
, cap
))
151 priv
->capabilities
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
152 priv
->ext_cap
= priv
->ext_cap_0c
= 0;
155 * Older firmwares had submodel ID fixed to 0x47
157 if (SYN_ID_FULL(priv
->identity
) < 0x705 &&
158 SYN_CAP_SUBMODEL_ID(priv
->capabilities
) != 0x47) {
163 * Unless capExtended is set the rest of the flags should be ignored
165 if (!SYN_CAP_EXTENDED(priv
->capabilities
))
166 priv
->capabilities
= 0;
168 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 1) {
169 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB
, cap
)) {
170 printk(KERN_ERR
"Synaptics claims to have extended capabilities,"
171 " but I'm not able to read them.\n");
173 priv
->ext_cap
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
176 * if nExtBtn is greater than 8 it should be considered
177 * invalid and treated as 0
179 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) > 8)
180 priv
->ext_cap
&= 0xff0fff;
184 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 4) {
185 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB_0C
, cap
)) {
186 printk(KERN_ERR
"Synaptics claims to have extended capability 0x0c,"
187 " but I'm not able to read it.\n");
189 priv
->ext_cap_0c
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
198 * See also the SYN_ID_* macros
200 static int synaptics_identify(struct psmouse
*psmouse
)
202 struct synaptics_data
*priv
= psmouse
->private;
205 if (synaptics_send_cmd(psmouse
, SYN_QUE_IDENTIFY
, id
))
207 priv
->identity
= (id
[0]<<16) | (id
[1]<<8) | id
[2];
208 if (SYN_ID_IS_SYNAPTICS(priv
->identity
))
214 * Read touchpad resolution and maximum reported coordinates
215 * Resolution is left zero if touchpad does not support the query
217 static int synaptics_resolution(struct psmouse
*psmouse
)
219 struct synaptics_data
*priv
= psmouse
->private;
220 unsigned char resp
[3];
222 if (SYN_ID_MAJOR(priv
->identity
) < 4)
225 if (synaptics_send_cmd(psmouse
, SYN_QUE_RESOLUTION
, resp
) == 0) {
226 if (resp
[0] != 0 && (resp
[1] & 0x80) && resp
[2] != 0) {
227 priv
->x_res
= resp
[0]; /* x resolution in units/mm */
228 priv
->y_res
= resp
[2]; /* y resolution in units/mm */
232 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 5 &&
233 SYN_CAP_MAX_DIMENSIONS(priv
->ext_cap_0c
)) {
234 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MAX_COORDS
, resp
)) {
235 printk(KERN_ERR
"Synaptics claims to have max coordinates"
236 " query, but I'm not able to read it.\n");
238 priv
->x_max
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
239 priv
->y_max
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
243 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 7 &&
244 SYN_CAP_MIN_DIMENSIONS(priv
->ext_cap_0c
)) {
245 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MIN_COORDS
, resp
)) {
246 printk(KERN_ERR
"Synaptics claims to have min coordinates"
247 " query, but I'm not able to read it.\n");
249 priv
->x_min
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
250 priv
->y_min
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
257 static int synaptics_query_hardware(struct psmouse
*psmouse
)
259 if (synaptics_identify(psmouse
))
261 if (synaptics_model_id(psmouse
))
263 if (synaptics_capability(psmouse
))
265 if (synaptics_resolution(psmouse
))
271 static int synaptics_set_absolute_mode(struct psmouse
*psmouse
)
273 struct synaptics_data
*priv
= psmouse
->private;
275 priv
->mode
= SYN_BIT_ABSOLUTE_MODE
;
276 if (SYN_ID_MAJOR(priv
->identity
) >= 4)
277 priv
->mode
|= SYN_BIT_DISABLE_GESTURE
;
278 if (SYN_CAP_EXTENDED(priv
->capabilities
))
279 priv
->mode
|= SYN_BIT_W_MODE
;
281 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
287 static void synaptics_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
289 struct synaptics_data
*priv
= psmouse
->private;
292 priv
->mode
|= SYN_BIT_HIGH_RATE
;
295 priv
->mode
&= ~SYN_BIT_HIGH_RATE
;
299 synaptics_mode_cmd(psmouse
, priv
->mode
);
302 static int synaptics_set_advanced_gesture_mode(struct psmouse
*psmouse
)
304 static unsigned char param
= 0xc8;
305 struct synaptics_data
*priv
= psmouse
->private;
307 if (!(SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) ||
308 SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)))
311 if (psmouse_sliced_command(psmouse
, SYN_QUE_MODEL
))
313 if (ps2_command(&psmouse
->ps2dev
, ¶m
, PSMOUSE_CMD_SETRATE
))
316 /* Advanced gesture mode also sends multi finger data */
317 priv
->capabilities
|= BIT(1);
322 /*****************************************************************************
323 * Synaptics pass-through PS/2 port support
324 ****************************************************************************/
325 static int synaptics_pt_write(struct serio
*serio
, unsigned char c
)
327 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
328 char rate_param
= SYN_PS_CLIENT_CMD
; /* indicates that we want pass-through port */
330 if (psmouse_sliced_command(parent
, c
))
332 if (ps2_command(&parent
->ps2dev
, &rate_param
, PSMOUSE_CMD_SETRATE
))
337 static int synaptics_pt_start(struct serio
*serio
)
339 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
340 struct synaptics_data
*priv
= parent
->private;
342 serio_pause_rx(parent
->ps2dev
.serio
);
343 priv
->pt_port
= serio
;
344 serio_continue_rx(parent
->ps2dev
.serio
);
349 static void synaptics_pt_stop(struct serio
*serio
)
351 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
352 struct synaptics_data
*priv
= parent
->private;
354 serio_pause_rx(parent
->ps2dev
.serio
);
355 priv
->pt_port
= NULL
;
356 serio_continue_rx(parent
->ps2dev
.serio
);
359 static int synaptics_is_pt_packet(unsigned char *buf
)
361 return (buf
[0] & 0xFC) == 0x84 && (buf
[3] & 0xCC) == 0xC4;
364 static void synaptics_pass_pt_packet(struct serio
*ptport
, unsigned char *packet
)
366 struct psmouse
*child
= serio_get_drvdata(ptport
);
368 if (child
&& child
->state
== PSMOUSE_ACTIVATED
) {
369 serio_interrupt(ptport
, packet
[1], 0);
370 serio_interrupt(ptport
, packet
[4], 0);
371 serio_interrupt(ptport
, packet
[5], 0);
372 if (child
->pktsize
== 4)
373 serio_interrupt(ptport
, packet
[2], 0);
375 serio_interrupt(ptport
, packet
[1], 0);
378 static void synaptics_pt_activate(struct psmouse
*psmouse
)
380 struct synaptics_data
*priv
= psmouse
->private;
381 struct psmouse
*child
= serio_get_drvdata(priv
->pt_port
);
383 /* adjust the touchpad to child's choice of protocol */
385 if (child
->pktsize
== 4)
386 priv
->mode
|= SYN_BIT_FOUR_BYTE_CLIENT
;
388 priv
->mode
&= ~SYN_BIT_FOUR_BYTE_CLIENT
;
390 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
391 printk(KERN_INFO
"synaptics: failed to switch guest protocol\n");
395 static void synaptics_pt_create(struct psmouse
*psmouse
)
399 serio
= kzalloc(sizeof(struct serio
), GFP_KERNEL
);
401 printk(KERN_ERR
"synaptics: not enough memory to allocate pass-through port\n");
405 serio
->id
.type
= SERIO_PS_PSTHRU
;
406 strlcpy(serio
->name
, "Synaptics pass-through", sizeof(serio
->name
));
407 strlcpy(serio
->phys
, "synaptics-pt/serio0", sizeof(serio
->name
));
408 serio
->write
= synaptics_pt_write
;
409 serio
->start
= synaptics_pt_start
;
410 serio
->stop
= synaptics_pt_stop
;
411 serio
->parent
= psmouse
->ps2dev
.serio
;
413 psmouse
->pt_activate
= synaptics_pt_activate
;
415 printk(KERN_INFO
"serio: %s port at %s\n", serio
->name
, psmouse
->phys
);
416 serio_register_port(serio
);
419 /*****************************************************************************
420 * Functions to interpret the absolute mode packets
421 ****************************************************************************/
423 static void synaptics_mt_state_set(struct synaptics_mt_state
*state
, int count
,
426 state
->count
= count
;
431 static void synaptics_parse_agm(const unsigned char buf
[],
432 struct synaptics_data
*priv
,
433 struct synaptics_hw_state
*hw
)
435 struct synaptics_hw_state
*agm
= &priv
->agm
;
438 agm_packet_type
= (buf
[5] & 0x30) >> 4;
439 switch (agm_packet_type
) {
441 /* Gesture packet: (x, y, z) half resolution */
443 agm
->x
= (((buf
[4] & 0x0f) << 8) | buf
[1]) << 1;
444 agm
->y
= (((buf
[4] & 0xf0) << 4) | buf
[2]) << 1;
445 agm
->z
= ((buf
[3] & 0x30) | (buf
[5] & 0x0f)) << 1;
449 /* AGM-CONTACT packet: (count, sgm, agm) */
450 synaptics_mt_state_set(&agm
->mt_state
, buf
[1], buf
[2], buf
[4]);
457 /* Record that at least one AGM has been received since last SGM */
458 priv
->agm_pending
= true;
461 static int synaptics_parse_hw_state(const unsigned char buf
[],
462 struct synaptics_data
*priv
,
463 struct synaptics_hw_state
*hw
)
465 memset(hw
, 0, sizeof(struct synaptics_hw_state
));
467 if (SYN_MODEL_NEWABS(priv
->model_id
)) {
468 hw
->w
= (((buf
[0] & 0x30) >> 2) |
469 ((buf
[0] & 0x04) >> 1) |
470 ((buf
[3] & 0x04) >> 2));
472 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
473 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
475 if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
477 * Clickpad's button is transmitted as middle button,
478 * however, since it is primary button, we will report
481 hw
->left
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
483 } else if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
484 hw
->middle
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
486 hw
->scroll
= (signed char)(buf
[1]);
489 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
490 hw
->up
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
491 hw
->down
= ((buf
[0] ^ buf
[3]) & 0x02) ? 1 : 0;
494 if ((SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) ||
495 SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) &&
497 synaptics_parse_agm(buf
, priv
, hw
);
501 hw
->x
= (((buf
[3] & 0x10) << 8) |
502 ((buf
[1] & 0x0f) << 8) |
504 hw
->y
= (((buf
[3] & 0x20) << 7) |
505 ((buf
[1] & 0xf0) << 4) |
509 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) &&
510 ((buf
[0] ^ buf
[3]) & 0x02)) {
511 switch (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) & ~0x01) {
514 * if nExtBtn is greater than 8 it should be
515 * considered invalid and treated as 0
519 hw
->ext_buttons
|= ((buf
[5] & 0x08)) ? 0x80 : 0;
520 hw
->ext_buttons
|= ((buf
[4] & 0x08)) ? 0x40 : 0;
522 hw
->ext_buttons
|= ((buf
[5] & 0x04)) ? 0x20 : 0;
523 hw
->ext_buttons
|= ((buf
[4] & 0x04)) ? 0x10 : 0;
525 hw
->ext_buttons
|= ((buf
[5] & 0x02)) ? 0x08 : 0;
526 hw
->ext_buttons
|= ((buf
[4] & 0x02)) ? 0x04 : 0;
528 hw
->ext_buttons
|= ((buf
[5] & 0x01)) ? 0x02 : 0;
529 hw
->ext_buttons
|= ((buf
[4] & 0x01)) ? 0x01 : 0;
533 hw
->x
= (((buf
[1] & 0x1f) << 8) | buf
[2]);
534 hw
->y
= (((buf
[4] & 0x1f) << 8) | buf
[5]);
536 hw
->z
= (((buf
[0] & 0x30) << 2) | (buf
[3] & 0x3F));
537 hw
->w
= (((buf
[1] & 0x80) >> 4) | ((buf
[0] & 0x04) >> 1));
539 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
540 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
546 static void synaptics_report_semi_mt_slot(struct input_dev
*dev
, int slot
,
547 bool active
, int x
, int y
)
549 input_mt_slot(dev
, slot
);
550 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, active
);
552 input_report_abs(dev
, ABS_MT_POSITION_X
, x
);
553 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(y
));
557 static void synaptics_report_semi_mt_data(struct input_dev
*dev
,
558 const struct synaptics_hw_state
*a
,
559 const struct synaptics_hw_state
*b
,
562 if (num_fingers
>= 2) {
563 synaptics_report_semi_mt_slot(dev
, 0, true, min(a
->x
, b
->x
),
565 synaptics_report_semi_mt_slot(dev
, 1, true, max(a
->x
, b
->x
),
567 } else if (num_fingers
== 1) {
568 synaptics_report_semi_mt_slot(dev
, 0, true, a
->x
, a
->y
);
569 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
571 synaptics_report_semi_mt_slot(dev
, 0, false, 0, 0);
572 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
576 static void synaptics_report_buttons(struct psmouse
*psmouse
,
577 const struct synaptics_hw_state
*hw
)
579 struct input_dev
*dev
= psmouse
->dev
;
580 struct synaptics_data
*priv
= psmouse
->private;
583 input_report_key(dev
, BTN_LEFT
, hw
->left
);
584 input_report_key(dev
, BTN_RIGHT
, hw
->right
);
586 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
587 input_report_key(dev
, BTN_MIDDLE
, hw
->middle
);
589 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
590 input_report_key(dev
, BTN_FORWARD
, hw
->up
);
591 input_report_key(dev
, BTN_BACK
, hw
->down
);
594 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
595 input_report_key(dev
, BTN_0
+ i
, hw
->ext_buttons
& (1 << i
));
598 static void synaptics_report_slot(struct input_dev
*dev
, int slot
,
599 const struct synaptics_hw_state
*hw
)
601 input_mt_slot(dev
, slot
);
602 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, (hw
!= NULL
));
606 input_report_abs(dev
, ABS_MT_POSITION_X
, hw
->x
);
607 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(hw
->y
));
608 input_report_abs(dev
, ABS_MT_PRESSURE
, hw
->z
);
611 static void synaptics_report_mt_data(struct psmouse
*psmouse
,
612 struct synaptics_mt_state
*mt_state
,
613 const struct synaptics_hw_state
*sgm
)
615 struct input_dev
*dev
= psmouse
->dev
;
616 struct synaptics_data
*priv
= psmouse
->private;
617 struct synaptics_hw_state
*agm
= &priv
->agm
;
618 struct synaptics_mt_state
*old
= &priv
->mt_state
;
620 switch (mt_state
->count
) {
622 synaptics_report_slot(dev
, 0, NULL
);
623 synaptics_report_slot(dev
, 1, NULL
);
626 if (mt_state
->sgm
== -1) {
627 synaptics_report_slot(dev
, 0, NULL
);
628 synaptics_report_slot(dev
, 1, NULL
);
629 } else if (mt_state
->sgm
== 0) {
630 synaptics_report_slot(dev
, 0, sgm
);
631 synaptics_report_slot(dev
, 1, NULL
);
633 synaptics_report_slot(dev
, 0, NULL
);
634 synaptics_report_slot(dev
, 1, sgm
);
639 * If the finger slot contained in SGM is valid, and either
640 * hasn't changed, or is new, then report SGM in MTB slot 0.
641 * Otherwise, empty MTB slot 0.
643 if (mt_state
->sgm
!= -1 &&
644 (mt_state
->sgm
== old
->sgm
|| old
->sgm
== -1))
645 synaptics_report_slot(dev
, 0, sgm
);
647 synaptics_report_slot(dev
, 0, NULL
);
650 * If the finger slot contained in AGM is valid, and either
651 * hasn't changed, or is new, then report AGM in MTB slot 1.
652 * Otherwise, empty MTB slot 1.
654 if (mt_state
->agm
!= -1 &&
655 (mt_state
->agm
== old
->agm
|| old
->agm
== -1))
656 synaptics_report_slot(dev
, 1, agm
);
658 synaptics_report_slot(dev
, 1, NULL
);
662 /* Don't use active slot count to generate BTN_TOOL events. */
663 input_mt_report_pointer_emulation(dev
, false);
665 /* Send the number of fingers reported by touchpad itself. */
666 input_mt_report_finger_count(dev
, mt_state
->count
);
668 synaptics_report_buttons(psmouse
, sgm
);
673 /* Handle case where mt_state->count = 0 */
674 static void synaptics_image_sensor_0f(struct synaptics_data
*priv
,
675 struct synaptics_mt_state
*mt_state
)
677 synaptics_mt_state_set(mt_state
, 0, -1, -1);
678 priv
->mt_state_lost
= false;
681 /* Handle case where mt_state->count = 1 */
682 static void synaptics_image_sensor_1f(struct synaptics_data
*priv
,
683 struct synaptics_mt_state
*mt_state
)
685 struct synaptics_hw_state
*agm
= &priv
->agm
;
686 struct synaptics_mt_state
*old
= &priv
->mt_state
;
689 * If the last AGM was (0,0,0), and there is only one finger left,
690 * then we absolutely know that SGM contains slot 0, and all other
691 * fingers have been removed.
693 if (priv
->agm_pending
&& agm
->z
== 0) {
694 synaptics_mt_state_set(mt_state
, 1, 0, -1);
695 priv
->mt_state_lost
= false;
699 switch (old
->count
) {
701 synaptics_mt_state_set(mt_state
, 1, 0, -1);
705 * If mt_state_lost, then the previous transition was 3->1,
706 * and SGM now contains either slot 0 or 1, but we don't know
707 * which. So, we just assume that the SGM now contains slot 1.
709 * If pending AGM and either:
710 * (a) the previous SGM slot contains slot 0, or
711 * (b) there was no SGM slot
712 * then, the SGM now contains slot 1
714 * Case (a) happens with very rapid "drum roll" gestures, where
715 * slot 0 finger is lifted and a new slot 1 finger touches
716 * within one reporting interval.
718 * Case (b) happens if initially two or more fingers tap
719 * briefly, and all but one lift before the end of the first
720 * reporting interval.
722 * (In both these cases, slot 0 will becomes empty, so SGM
723 * contains slot 1 with the new finger)
725 * Else, if there was no previous SGM, it now contains slot 0.
727 * Otherwise, SGM still contains the same slot.
729 if (priv
->mt_state_lost
||
730 (priv
->agm_pending
&& old
->sgm
<= 0))
731 synaptics_mt_state_set(mt_state
, 1, 1, -1);
732 else if (old
->sgm
== -1)
733 synaptics_mt_state_set(mt_state
, 1, 0, -1);
737 * If mt_state_lost, we don't know which finger SGM contains.
739 * So, report 1 finger, but with both slots empty.
740 * We will use slot 1 on subsequent 1->1
742 if (priv
->mt_state_lost
) {
743 synaptics_mt_state_set(mt_state
, 1, -1, -1);
747 * Since the last AGM was NOT (0,0,0), it was the finger in
748 * slot 0 that has been removed.
749 * So, SGM now contains previous AGM's slot, and AGM is now
752 synaptics_mt_state_set(mt_state
, 1, old
->agm
, -1);
756 * Since last AGM was not (0,0,0), we don't know which finger
759 * So, report 1 finger, but with both slots empty.
760 * We will use slot 1 on subsequent 1->1
762 synaptics_mt_state_set(mt_state
, 1, -1, -1);
763 priv
->mt_state_lost
= true;
767 /* mt_state was updated by AGM-CONTACT packet */
772 /* Handle case where mt_state->count = 2 */
773 static void synaptics_image_sensor_2f(struct synaptics_data
*priv
,
774 struct synaptics_mt_state
*mt_state
)
776 struct synaptics_mt_state
*old
= &priv
->mt_state
;
778 switch (old
->count
) {
780 synaptics_mt_state_set(mt_state
, 2, 0, 1);
784 * If previous SGM contained slot 1 or higher, SGM now contains
785 * slot 0 (the newly touching finger) and AGM contains SGM's
788 * Otherwise, SGM still contains slot 0 and AGM now contains
792 synaptics_mt_state_set(mt_state
, 2, 0, old
->sgm
);
794 synaptics_mt_state_set(mt_state
, 2, 0, 1);
798 * If mt_state_lost, SGM now contains either finger 1 or 2, but
799 * we don't know which.
800 * So, we just assume that the SGM contains slot 0 and AGM 1.
802 if (priv
->mt_state_lost
)
803 synaptics_mt_state_set(mt_state
, 2, 0, 1);
805 * Otherwise, use the same mt_state, since it either hasn't
806 * changed, or was updated by a recently received AGM-CONTACT
812 * 3->2 transitions have two unsolvable problems:
813 * 1) no indication is given which finger was removed
814 * 2) no way to tell if agm packet was for finger 3
815 * before 3->2, or finger 2 after 3->2.
817 * So, report 2 fingers, but empty all slots.
818 * We will guess slots [0,1] on subsequent 2->2.
820 synaptics_mt_state_set(mt_state
, 2, -1, -1);
821 priv
->mt_state_lost
= true;
825 /* mt_state was updated by AGM-CONTACT packet */
830 /* Handle case where mt_state->count = 3 */
831 static void synaptics_image_sensor_3f(struct synaptics_data
*priv
,
832 struct synaptics_mt_state
*mt_state
)
834 struct synaptics_mt_state
*old
= &priv
->mt_state
;
836 switch (old
->count
) {
838 synaptics_mt_state_set(mt_state
, 3, 0, 2);
842 * If previous SGM contained slot 2 or higher, SGM now contains
843 * slot 0 (one of the newly touching fingers) and AGM contains
844 * SGM's previous slot.
846 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
849 synaptics_mt_state_set(mt_state
, 3, 0, old
->sgm
);
851 synaptics_mt_state_set(mt_state
, 3, 0, 2);
855 * If the AGM previously contained slot 3 or higher, then the
856 * newly touching finger is in the lowest available slot.
858 * If SGM was previously 1 or higher, then the new SGM is
859 * now slot 0 (with a new finger), otherwise, the new finger
860 * is now in a hidden slot between 0 and AGM's slot.
862 * In all such cases, the SGM now contains slot 0, and the AGM
863 * continues to contain the same slot as before.
866 synaptics_mt_state_set(mt_state
, 3, 0, old
->agm
);
871 * After some 3->1 and all 3->2 transitions, we lose track
872 * of which slot is reported by SGM and AGM.
874 * For 2->3 in this state, report 3 fingers, but empty all
875 * slots, and we will guess (0,2) on a subsequent 0->3.
877 * To userspace, the resulting transition will look like:
878 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
880 if (priv
->mt_state_lost
) {
881 synaptics_mt_state_set(mt_state
, 3, -1, -1);
886 * If the (SGM,AGM) really previously contained slots (0, 1),
887 * then we cannot know what slot was just reported by the AGM,
888 * because the 2->3 transition can occur either before or after
889 * the AGM packet. Thus, this most recent AGM could contain
890 * either the same old slot 1 or the new slot 2.
891 * Subsequent AGMs will be reporting slot 2.
893 * To userspace, the resulting transition will look like:
894 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
896 synaptics_mt_state_set(mt_state
, 3, 0, -1);
900 * If, for whatever reason, the previous agm was invalid,
901 * Assume SGM now contains slot 0, AGM now contains slot 2.
904 synaptics_mt_state_set(mt_state
, 3, 0, 2);
906 * mt_state either hasn't changed, or was updated by a recently
907 * received AGM-CONTACT packet.
913 /* mt_state was updated by AGM-CONTACT packet */
918 /* Handle case where mt_state->count = 4, or = 5 */
919 static void synaptics_image_sensor_45f(struct synaptics_data
*priv
,
920 struct synaptics_mt_state
*mt_state
)
922 /* mt_state was updated correctly by AGM-CONTACT packet */
923 priv
->mt_state_lost
= false;
926 static void synaptics_image_sensor_process(struct psmouse
*psmouse
,
927 struct synaptics_hw_state
*sgm
)
929 struct synaptics_data
*priv
= psmouse
->private;
930 struct synaptics_hw_state
*agm
= &priv
->agm
;
931 struct synaptics_mt_state mt_state
;
933 /* Initialize using current mt_state (as updated by last agm) */
934 mt_state
= agm
->mt_state
;
937 * Update mt_state using the new finger count and current mt_state.
940 synaptics_image_sensor_0f(priv
, &mt_state
);
941 else if (sgm
->w
>= 4)
942 synaptics_image_sensor_1f(priv
, &mt_state
);
943 else if (sgm
->w
== 0)
944 synaptics_image_sensor_2f(priv
, &mt_state
);
945 else if (sgm
->w
== 1 && mt_state
.count
<= 3)
946 synaptics_image_sensor_3f(priv
, &mt_state
);
948 synaptics_image_sensor_45f(priv
, &mt_state
);
950 /* Send resulting input events to user space */
951 synaptics_report_mt_data(psmouse
, &mt_state
, sgm
);
953 /* Store updated mt_state */
954 priv
->mt_state
= agm
->mt_state
= mt_state
;
955 priv
->agm_pending
= false;
959 * called for each full received packet from the touchpad
961 static void synaptics_process_packet(struct psmouse
*psmouse
)
963 struct input_dev
*dev
= psmouse
->dev
;
964 struct synaptics_data
*priv
= psmouse
->private;
965 struct synaptics_hw_state hw
;
969 if (synaptics_parse_hw_state(psmouse
->packet
, priv
, &hw
))
972 if (SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) {
973 synaptics_image_sensor_process(psmouse
, &hw
);
978 priv
->scroll
+= hw
.scroll
;
980 while (priv
->scroll
>= 4) {
981 input_report_key(dev
, BTN_BACK
, !hw
.down
);
983 input_report_key(dev
, BTN_BACK
, hw
.down
);
987 while (priv
->scroll
<= -4) {
988 input_report_key(dev
, BTN_FORWARD
, !hw
.up
);
990 input_report_key(dev
, BTN_FORWARD
, hw
.up
);
997 if (hw
.z
> 0 && hw
.x
> 1) {
1000 if (SYN_CAP_EXTENDED(priv
->capabilities
)) {
1003 if (SYN_CAP_MULTIFINGER(priv
->capabilities
))
1004 num_fingers
= hw
.w
+ 2;
1007 if (SYN_MODEL_PEN(priv
->model_id
))
1008 ; /* Nothing, treat a pen as a single finger */
1011 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1012 finger_width
= hw
.w
;
1021 if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
))
1022 synaptics_report_semi_mt_data(dev
, &hw
, &priv
->agm
,
1026 * BTN_TOUCH has to be first as mousedev relies on it when doing
1027 * absolute -> relative conversion
1029 if (hw
.z
> 30) input_report_key(dev
, BTN_TOUCH
, 1);
1030 if (hw
.z
< 25) input_report_key(dev
, BTN_TOUCH
, 0);
1032 if (num_fingers
> 0) {
1033 input_report_abs(dev
, ABS_X
, hw
.x
);
1034 input_report_abs(dev
, ABS_Y
, synaptics_invert_y(hw
.y
));
1036 input_report_abs(dev
, ABS_PRESSURE
, hw
.z
);
1038 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1039 input_report_abs(dev
, ABS_TOOL_WIDTH
, finger_width
);
1041 input_report_key(dev
, BTN_TOOL_FINGER
, num_fingers
== 1);
1042 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
1043 input_report_key(dev
, BTN_TOOL_DOUBLETAP
, num_fingers
== 2);
1044 input_report_key(dev
, BTN_TOOL_TRIPLETAP
, num_fingers
== 3);
1047 synaptics_report_buttons(psmouse
, &hw
);
1052 static int synaptics_validate_byte(unsigned char packet
[], int idx
, unsigned char pkt_type
)
1054 static const unsigned char newabs_mask
[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1055 static const unsigned char newabs_rel_mask
[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1056 static const unsigned char newabs_rslt
[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1057 static const unsigned char oldabs_mask
[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1058 static const unsigned char oldabs_rslt
[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1060 if (idx
< 0 || idx
> 4)
1066 case SYN_NEWABS_RELAXED
:
1067 return (packet
[idx
] & newabs_rel_mask
[idx
]) == newabs_rslt
[idx
];
1069 case SYN_NEWABS_STRICT
:
1070 return (packet
[idx
] & newabs_mask
[idx
]) == newabs_rslt
[idx
];
1073 return (packet
[idx
] & oldabs_mask
[idx
]) == oldabs_rslt
[idx
];
1076 printk(KERN_ERR
"synaptics: unknown packet type %d\n", pkt_type
);
1081 static unsigned char synaptics_detect_pkt_type(struct psmouse
*psmouse
)
1085 for (i
= 0; i
< 5; i
++)
1086 if (!synaptics_validate_byte(psmouse
->packet
, i
, SYN_NEWABS_STRICT
)) {
1087 printk(KERN_INFO
"synaptics: using relaxed packet validation\n");
1088 return SYN_NEWABS_RELAXED
;
1091 return SYN_NEWABS_STRICT
;
1094 static psmouse_ret_t
synaptics_process_byte(struct psmouse
*psmouse
)
1096 struct synaptics_data
*priv
= psmouse
->private;
1098 if (psmouse
->pktcnt
>= 6) { /* Full packet received */
1099 if (unlikely(priv
->pkt_type
== SYN_NEWABS
))
1100 priv
->pkt_type
= synaptics_detect_pkt_type(psmouse
);
1102 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
) &&
1103 synaptics_is_pt_packet(psmouse
->packet
)) {
1105 synaptics_pass_pt_packet(priv
->pt_port
, psmouse
->packet
);
1107 synaptics_process_packet(psmouse
);
1109 return PSMOUSE_FULL_PACKET
;
1112 return synaptics_validate_byte(psmouse
->packet
, psmouse
->pktcnt
- 1, priv
->pkt_type
) ?
1113 PSMOUSE_GOOD_DATA
: PSMOUSE_BAD_DATA
;
1116 /*****************************************************************************
1117 * Driver initialization/cleanup functions
1118 ****************************************************************************/
1119 static void set_abs_position_params(struct input_dev
*dev
,
1120 struct synaptics_data
*priv
, int x_code
,
1123 int x_min
= priv
->x_min
?: XMIN_NOMINAL
;
1124 int x_max
= priv
->x_max
?: XMAX_NOMINAL
;
1125 int y_min
= priv
->y_min
?: YMIN_NOMINAL
;
1126 int y_max
= priv
->y_max
?: YMAX_NOMINAL
;
1127 int fuzz
= SYN_CAP_REDUCED_FILTERING(priv
->ext_cap_0c
) ?
1128 SYN_REDUCED_FILTER_FUZZ
: 0;
1130 input_set_abs_params(dev
, x_code
, x_min
, x_max
, fuzz
, 0);
1131 input_set_abs_params(dev
, y_code
, y_min
, y_max
, fuzz
, 0);
1132 input_abs_set_res(dev
, x_code
, priv
->x_res
);
1133 input_abs_set_res(dev
, y_code
, priv
->y_res
);
1136 static void set_input_params(struct input_dev
*dev
, struct synaptics_data
*priv
)
1140 __set_bit(INPUT_PROP_POINTER
, dev
->propbit
);
1142 __set_bit(EV_ABS
, dev
->evbit
);
1143 set_abs_position_params(dev
, priv
, ABS_X
, ABS_Y
);
1144 input_set_abs_params(dev
, ABS_PRESSURE
, 0, 255, 0, 0);
1146 if (SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) {
1147 input_mt_init_slots(dev
, 2);
1148 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
1150 /* Image sensors can report per-contact pressure */
1151 input_set_abs_params(dev
, ABS_MT_PRESSURE
, 0, 255, 0, 0);
1153 /* Image sensors can signal 4 and 5 finger clicks */
1154 __set_bit(BTN_TOOL_QUADTAP
, dev
->keybit
);
1155 __set_bit(BTN_TOOL_QUINTTAP
, dev
->keybit
);
1156 } else if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
)) {
1157 /* Non-image sensors with AGM use semi-mt */
1158 __set_bit(INPUT_PROP_SEMI_MT
, dev
->propbit
);
1159 input_mt_init_slots(dev
, 2);
1160 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
1164 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1165 input_set_abs_params(dev
, ABS_TOOL_WIDTH
, 0, 15, 0, 0);
1167 __set_bit(EV_KEY
, dev
->evbit
);
1168 __set_bit(BTN_TOUCH
, dev
->keybit
);
1169 __set_bit(BTN_TOOL_FINGER
, dev
->keybit
);
1170 __set_bit(BTN_LEFT
, dev
->keybit
);
1171 __set_bit(BTN_RIGHT
, dev
->keybit
);
1173 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
1174 __set_bit(BTN_TOOL_DOUBLETAP
, dev
->keybit
);
1175 __set_bit(BTN_TOOL_TRIPLETAP
, dev
->keybit
);
1178 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
1179 __set_bit(BTN_MIDDLE
, dev
->keybit
);
1181 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
) ||
1182 SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
1183 __set_bit(BTN_FORWARD
, dev
->keybit
);
1184 __set_bit(BTN_BACK
, dev
->keybit
);
1187 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
1188 __set_bit(BTN_0
+ i
, dev
->keybit
);
1190 __clear_bit(EV_REL
, dev
->evbit
);
1191 __clear_bit(REL_X
, dev
->relbit
);
1192 __clear_bit(REL_Y
, dev
->relbit
);
1194 if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
1195 __set_bit(INPUT_PROP_BUTTONPAD
, dev
->propbit
);
1196 /* Clickpads report only left button */
1197 __clear_bit(BTN_RIGHT
, dev
->keybit
);
1198 __clear_bit(BTN_MIDDLE
, dev
->keybit
);
1202 static void synaptics_disconnect(struct psmouse
*psmouse
)
1204 synaptics_reset(psmouse
);
1205 kfree(psmouse
->private);
1206 psmouse
->private = NULL
;
1209 static int synaptics_reconnect(struct psmouse
*psmouse
)
1211 struct synaptics_data
*priv
= psmouse
->private;
1212 struct synaptics_data old_priv
= *priv
;
1217 psmouse_reset(psmouse
);
1218 error
= synaptics_detect(psmouse
, 0);
1219 } while (error
&& ++retry
< 3);
1225 printk(KERN_DEBUG
"Synaptics reconnected after %d tries\n",
1228 if (synaptics_query_hardware(psmouse
)) {
1229 printk(KERN_ERR
"Unable to query Synaptics hardware.\n");
1233 if (synaptics_set_absolute_mode(psmouse
)) {
1234 printk(KERN_ERR
"Unable to initialize Synaptics hardware.\n");
1238 if (synaptics_set_advanced_gesture_mode(psmouse
)) {
1239 printk(KERN_ERR
"Advanced gesture mode reconnect failed.\n");
1243 if (old_priv
.identity
!= priv
->identity
||
1244 old_priv
.model_id
!= priv
->model_id
||
1245 old_priv
.capabilities
!= priv
->capabilities
||
1246 old_priv
.ext_cap
!= priv
->ext_cap
) {
1247 printk(KERN_ERR
"Synaptics hardware appears to be different: "
1248 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1249 old_priv
.identity
, priv
->identity
,
1250 old_priv
.model_id
, priv
->model_id
,
1251 old_priv
.capabilities
, priv
->capabilities
,
1252 old_priv
.ext_cap
, priv
->ext_cap
);
1259 static bool impaired_toshiba_kbc
;
1261 static const struct dmi_system_id __initconst toshiba_dmi_table
[] = {
1262 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1264 /* Toshiba Satellite */
1266 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1267 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite"),
1271 /* Toshiba Dynabook */
1273 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1274 DMI_MATCH(DMI_PRODUCT_NAME
, "dynabook"),
1278 /* Toshiba Portege M300 */
1280 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1281 DMI_MATCH(DMI_PRODUCT_NAME
, "PORTEGE M300"),
1286 /* Toshiba Portege M300 */
1288 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1289 DMI_MATCH(DMI_PRODUCT_NAME
, "Portable PC"),
1290 DMI_MATCH(DMI_PRODUCT_VERSION
, "Version 1.0"),
1298 static bool broken_olpc_ec
;
1300 static const struct dmi_system_id __initconst olpc_dmi_table
[] = {
1301 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1303 /* OLPC XO-1 or XO-1.5 */
1305 DMI_MATCH(DMI_SYS_VENDOR
, "OLPC"),
1306 DMI_MATCH(DMI_PRODUCT_NAME
, "XO"),
1313 void __init
synaptics_module_init(void)
1315 impaired_toshiba_kbc
= dmi_check_system(toshiba_dmi_table
);
1316 broken_olpc_ec
= dmi_check_system(olpc_dmi_table
);
1319 int synaptics_init(struct psmouse
*psmouse
)
1321 struct synaptics_data
*priv
;
1324 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
1325 * the HGPK, it quickly degrades and the hardware becomes jumpy and
1326 * overly sensitive. Not only that, but the constant packet spew
1327 * (even at a lowered 40pps rate) overloads the EC such that key
1328 * presses on the keyboard are missed. Given all of that, don't
1329 * even attempt to use Synaptics mode. Relative mode seems to work
1332 if (broken_olpc_ec
) {
1333 printk(KERN_INFO
"synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
1337 psmouse
->private = priv
= kzalloc(sizeof(struct synaptics_data
), GFP_KERNEL
);
1341 psmouse_reset(psmouse
);
1343 if (synaptics_query_hardware(psmouse
)) {
1344 printk(KERN_ERR
"Unable to query Synaptics hardware.\n");
1348 if (synaptics_set_absolute_mode(psmouse
)) {
1349 printk(KERN_ERR
"Unable to initialize Synaptics hardware.\n");
1353 if (synaptics_set_advanced_gesture_mode(psmouse
)) {
1354 printk(KERN_ERR
"Advanced gesture mode init failed.\n");
1358 priv
->pkt_type
= SYN_MODEL_NEWABS(priv
->model_id
) ? SYN_NEWABS
: SYN_OLDABS
;
1360 printk(KERN_INFO
"Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
1361 SYN_ID_MODEL(priv
->identity
),
1362 SYN_ID_MAJOR(priv
->identity
), SYN_ID_MINOR(priv
->identity
),
1363 priv
->model_id
, priv
->capabilities
, priv
->ext_cap
, priv
->ext_cap_0c
);
1365 set_input_params(psmouse
->dev
, priv
);
1368 * Encode touchpad model so that it can be used to set
1369 * input device->id.version and be visible to userspace.
1370 * Because version is __u16 we have to drop something.
1371 * Hardware info bits seem to be good candidates as they
1372 * are documented to be for Synaptics corp. internal use.
1374 psmouse
->model
= ((priv
->model_id
& 0x00ff0000) >> 8) |
1375 (priv
->model_id
& 0x000000ff);
1377 psmouse
->protocol_handler
= synaptics_process_byte
;
1378 psmouse
->set_rate
= synaptics_set_rate
;
1379 psmouse
->disconnect
= synaptics_disconnect
;
1380 psmouse
->reconnect
= synaptics_reconnect
;
1381 psmouse
->cleanup
= synaptics_reset
;
1382 psmouse
->pktsize
= 6;
1383 /* Synaptics can usually stay in sync without extra help */
1384 psmouse
->resync_time
= 0;
1386 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
))
1387 synaptics_pt_create(psmouse
);
1390 * Toshiba's KBC seems to have trouble handling data from
1391 * Synaptics at full rate. Switch to a lower rate (roughly
1392 * the same rate as a standard PS/2 mouse).
1394 if (psmouse
->rate
>= 80 && impaired_toshiba_kbc
) {
1395 printk(KERN_INFO
"synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
1396 dmi_get_system_info(DMI_PRODUCT_NAME
));
1407 bool synaptics_supported(void)
1412 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1414 void __init
synaptics_module_init(void)
1418 int synaptics_init(struct psmouse
*psmouse
)
1423 bool synaptics_supported(void)
1428 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */