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/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/slab.h>
34 #include "synaptics.h"
37 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
38 * section 2.3.2, which says that they should be valid regardless of the
39 * actual size of the sensor.
40 * Note that newer firmware allows querying device for maximum useable
47 #define XMIN_NOMINAL 1472
48 #define XMAX_NOMINAL 5472
49 #define YMIN_NOMINAL 1408
50 #define YMAX_NOMINAL 4448
52 /* Size in bits of absolute position values reported by the hardware */
53 #define ABS_POS_BITS 13
56 * These values should represent the absolute maximum value that will
57 * be reported for a positive position value. Some Synaptics firmware
58 * uses this value to indicate a finger near the edge of the touchpad
59 * whose precise position cannot be determined.
61 * At least one touchpad is known to report positions in excess of this
62 * value which are actually negative values truncated to the 13-bit
63 * reporting range. These values have never been observed to be lower
64 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
65 * negative and any other value as positive.
67 #define X_MAX_POSITIVE 8176
68 #define Y_MAX_POSITIVE 8176
70 /*****************************************************************************
71 * Stuff we need even when we do not want native Synaptics support
72 ****************************************************************************/
75 * Set the synaptics touchpad mode byte by special commands
77 static int synaptics_mode_cmd(struct psmouse
*psmouse
, unsigned char mode
)
79 unsigned char param
[1];
81 if (psmouse_sliced_command(psmouse
, mode
))
83 param
[0] = SYN_PS_SET_MODE2
;
84 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_SETRATE
))
89 int synaptics_detect(struct psmouse
*psmouse
, bool set_properties
)
91 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
92 unsigned char param
[4];
96 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
97 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
98 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
99 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
100 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
);
102 if (param
[1] != 0x47)
105 if (set_properties
) {
106 psmouse
->vendor
= "Synaptics";
107 psmouse
->name
= "TouchPad";
113 void synaptics_reset(struct psmouse
*psmouse
)
115 /* reset touchpad back to relative mode, gestures enabled */
116 synaptics_mode_cmd(psmouse
, 0);
119 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
121 static bool cr48_profile_sensor
;
123 struct min_max_quirk
{
124 const char * const *pnp_ids
;
125 int x_min
, x_max
, y_min
, y_max
;
128 static const struct min_max_quirk min_max_pnpid_table
[] = {
130 (const char * const []){"LEN0033", NULL
},
131 1024, 5052, 2258, 4832
134 (const char * const []){"LEN0035", "LEN0042", NULL
},
135 1232, 5710, 1156, 4696
138 (const char * const []){"LEN0034", "LEN0036", "LEN2002",
140 1024, 5112, 2024, 4832
143 (const char * const []){"LEN2001", NULL
},
144 1024, 5022, 2508, 4832
149 /* This list has been kindly provided by Synaptics. */
150 static const char * const topbuttonpad_pnp_ids
[] = {
160 "LEN0033", /* Helix */
161 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
162 "LEN0035", /* X240 */
163 "LEN0036", /* T440 */
167 "LEN0042", /* Yoga */
174 "LEN2001", /* Edge E431 */
175 "LEN2002", /* Edge E531 */
177 "LEN2004", /* L440 */
188 /*****************************************************************************
189 * Synaptics communications functions
190 ****************************************************************************/
193 * Synaptics touchpads report the y coordinate from bottom to top, which is
194 * opposite from what userspace expects.
195 * This function is used to invert y before reporting.
197 static int synaptics_invert_y(int y
)
199 return YMAX_NOMINAL
+ YMIN_NOMINAL
- y
;
203 * Send a command to the synpatics touchpad by special commands
205 static int synaptics_send_cmd(struct psmouse
*psmouse
, unsigned char c
, unsigned char *param
)
207 if (psmouse_sliced_command(psmouse
, c
))
209 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
215 * Read the model-id bytes from the touchpad
216 * see also SYN_MODEL_* macros
218 static int synaptics_model_id(struct psmouse
*psmouse
)
220 struct synaptics_data
*priv
= psmouse
->private;
223 if (synaptics_send_cmd(psmouse
, SYN_QUE_MODEL
, mi
))
225 priv
->model_id
= (mi
[0]<<16) | (mi
[1]<<8) | mi
[2];
230 * Read the board id from the touchpad
231 * The board id is encoded in the "QUERY MODES" response
233 static int synaptics_board_id(struct psmouse
*psmouse
)
235 struct synaptics_data
*priv
= psmouse
->private;
236 unsigned char bid
[3];
238 if (synaptics_send_cmd(psmouse
, SYN_QUE_MODES
, bid
))
240 priv
->board_id
= ((bid
[0] & 0xfc) << 6) | bid
[1];
245 * Read the firmware id from the touchpad
247 static int synaptics_firmware_id(struct psmouse
*psmouse
)
249 struct synaptics_data
*priv
= psmouse
->private;
250 unsigned char fwid
[3];
252 if (synaptics_send_cmd(psmouse
, SYN_QUE_FIRMWARE_ID
, fwid
))
254 priv
->firmware_id
= (fwid
[0] << 16) | (fwid
[1] << 8) | fwid
[2];
259 * Read the capability-bits from the touchpad
260 * see also the SYN_CAP_* macros
262 static int synaptics_capability(struct psmouse
*psmouse
)
264 struct synaptics_data
*priv
= psmouse
->private;
265 unsigned char cap
[3];
267 if (synaptics_send_cmd(psmouse
, SYN_QUE_CAPABILITIES
, cap
))
269 priv
->capabilities
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
270 priv
->ext_cap
= priv
->ext_cap_0c
= 0;
273 * Older firmwares had submodel ID fixed to 0x47
275 if (SYN_ID_FULL(priv
->identity
) < 0x705 &&
276 SYN_CAP_SUBMODEL_ID(priv
->capabilities
) != 0x47) {
281 * Unless capExtended is set the rest of the flags should be ignored
283 if (!SYN_CAP_EXTENDED(priv
->capabilities
))
284 priv
->capabilities
= 0;
286 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 1) {
287 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB
, cap
)) {
288 psmouse_warn(psmouse
,
289 "device claims to have extended capabilities, but I'm not able to read them.\n");
291 priv
->ext_cap
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
294 * if nExtBtn is greater than 8 it should be considered
295 * invalid and treated as 0
297 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) > 8)
298 priv
->ext_cap
&= 0xff0fff;
302 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 4) {
303 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB_0C
, cap
)) {
304 psmouse_warn(psmouse
,
305 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
307 priv
->ext_cap_0c
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
316 * See also the SYN_ID_* macros
318 static int synaptics_identify(struct psmouse
*psmouse
)
320 struct synaptics_data
*priv
= psmouse
->private;
323 if (synaptics_send_cmd(psmouse
, SYN_QUE_IDENTIFY
, id
))
325 priv
->identity
= (id
[0]<<16) | (id
[1]<<8) | id
[2];
326 if (SYN_ID_IS_SYNAPTICS(priv
->identity
))
332 * Read touchpad resolution and maximum reported coordinates
333 * Resolution is left zero if touchpad does not support the query
336 static int synaptics_resolution(struct psmouse
*psmouse
)
338 struct synaptics_data
*priv
= psmouse
->private;
339 unsigned char resp
[3];
342 if (SYN_ID_MAJOR(priv
->identity
) < 4)
345 if (synaptics_send_cmd(psmouse
, SYN_QUE_RESOLUTION
, resp
) == 0) {
346 if (resp
[0] != 0 && (resp
[1] & 0x80) && resp
[2] != 0) {
347 priv
->x_res
= resp
[0]; /* x resolution in units/mm */
348 priv
->y_res
= resp
[2]; /* y resolution in units/mm */
352 for (i
= 0; min_max_pnpid_table
[i
].pnp_ids
; i
++) {
353 if (psmouse_matches_pnp_id(psmouse
,
354 min_max_pnpid_table
[i
].pnp_ids
)) {
355 priv
->x_min
= min_max_pnpid_table
[i
].x_min
;
356 priv
->x_max
= min_max_pnpid_table
[i
].x_max
;
357 priv
->y_min
= min_max_pnpid_table
[i
].y_min
;
358 priv
->y_max
= min_max_pnpid_table
[i
].y_max
;
363 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 5 &&
364 SYN_CAP_MAX_DIMENSIONS(priv
->ext_cap_0c
)) {
365 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MAX_COORDS
, resp
)) {
366 psmouse_warn(psmouse
,
367 "device claims to have max coordinates query, but I'm not able to read it.\n");
369 priv
->x_max
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
370 priv
->y_max
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
374 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 7 &&
375 SYN_CAP_MIN_DIMENSIONS(priv
->ext_cap_0c
)) {
376 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MIN_COORDS
, resp
)) {
377 psmouse_warn(psmouse
,
378 "device claims to have min coordinates query, but I'm not able to read it.\n");
380 priv
->x_min
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
381 priv
->y_min
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
388 static int synaptics_query_hardware(struct psmouse
*psmouse
)
390 if (synaptics_identify(psmouse
))
392 if (synaptics_model_id(psmouse
))
394 if (synaptics_firmware_id(psmouse
))
396 if (synaptics_board_id(psmouse
))
398 if (synaptics_capability(psmouse
))
400 if (synaptics_resolution(psmouse
))
406 static int synaptics_set_advanced_gesture_mode(struct psmouse
*psmouse
)
408 static unsigned char param
= 0xc8;
409 struct synaptics_data
*priv
= psmouse
->private;
411 if (!(SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) ||
412 SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)))
415 if (psmouse_sliced_command(psmouse
, SYN_QUE_MODEL
))
418 if (ps2_command(&psmouse
->ps2dev
, ¶m
, PSMOUSE_CMD_SETRATE
))
421 /* Advanced gesture mode also sends multi finger data */
422 priv
->capabilities
|= BIT(1);
427 static int synaptics_set_mode(struct psmouse
*psmouse
)
429 struct synaptics_data
*priv
= psmouse
->private;
432 if (priv
->absolute_mode
)
433 priv
->mode
|= SYN_BIT_ABSOLUTE_MODE
;
434 if (priv
->disable_gesture
)
435 priv
->mode
|= SYN_BIT_DISABLE_GESTURE
;
436 if (psmouse
->rate
>= 80)
437 priv
->mode
|= SYN_BIT_HIGH_RATE
;
438 if (SYN_CAP_EXTENDED(priv
->capabilities
))
439 priv
->mode
|= SYN_BIT_W_MODE
;
441 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
444 if (priv
->absolute_mode
&&
445 synaptics_set_advanced_gesture_mode(psmouse
)) {
446 psmouse_err(psmouse
, "Advanced gesture mode init failed.\n");
453 static void synaptics_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
455 struct synaptics_data
*priv
= psmouse
->private;
458 priv
->mode
|= SYN_BIT_HIGH_RATE
;
461 priv
->mode
&= ~SYN_BIT_HIGH_RATE
;
465 synaptics_mode_cmd(psmouse
, priv
->mode
);
468 /*****************************************************************************
469 * Synaptics pass-through PS/2 port support
470 ****************************************************************************/
471 static int synaptics_pt_write(struct serio
*serio
, unsigned char c
)
473 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
474 char rate_param
= SYN_PS_CLIENT_CMD
; /* indicates that we want pass-through port */
476 if (psmouse_sliced_command(parent
, c
))
478 if (ps2_command(&parent
->ps2dev
, &rate_param
, PSMOUSE_CMD_SETRATE
))
483 static int synaptics_pt_start(struct serio
*serio
)
485 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
486 struct synaptics_data
*priv
= parent
->private;
488 serio_pause_rx(parent
->ps2dev
.serio
);
489 priv
->pt_port
= serio
;
490 serio_continue_rx(parent
->ps2dev
.serio
);
495 static void synaptics_pt_stop(struct serio
*serio
)
497 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
498 struct synaptics_data
*priv
= parent
->private;
500 serio_pause_rx(parent
->ps2dev
.serio
);
501 priv
->pt_port
= NULL
;
502 serio_continue_rx(parent
->ps2dev
.serio
);
505 static int synaptics_is_pt_packet(unsigned char *buf
)
507 return (buf
[0] & 0xFC) == 0x84 && (buf
[3] & 0xCC) == 0xC4;
510 static void synaptics_pass_pt_packet(struct serio
*ptport
, unsigned char *packet
)
512 struct psmouse
*child
= serio_get_drvdata(ptport
);
514 if (child
&& child
->state
== PSMOUSE_ACTIVATED
) {
515 serio_interrupt(ptport
, packet
[1], 0);
516 serio_interrupt(ptport
, packet
[4], 0);
517 serio_interrupt(ptport
, packet
[5], 0);
518 if (child
->pktsize
== 4)
519 serio_interrupt(ptport
, packet
[2], 0);
521 serio_interrupt(ptport
, packet
[1], 0);
524 static void synaptics_pt_activate(struct psmouse
*psmouse
)
526 struct synaptics_data
*priv
= psmouse
->private;
527 struct psmouse
*child
= serio_get_drvdata(priv
->pt_port
);
529 /* adjust the touchpad to child's choice of protocol */
531 if (child
->pktsize
== 4)
532 priv
->mode
|= SYN_BIT_FOUR_BYTE_CLIENT
;
534 priv
->mode
&= ~SYN_BIT_FOUR_BYTE_CLIENT
;
536 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
537 psmouse_warn(psmouse
,
538 "failed to switch guest protocol\n");
542 static void synaptics_pt_create(struct psmouse
*psmouse
)
546 serio
= kzalloc(sizeof(struct serio
), GFP_KERNEL
);
549 "not enough memory for pass-through port\n");
553 serio
->id
.type
= SERIO_PS_PSTHRU
;
554 strlcpy(serio
->name
, "Synaptics pass-through", sizeof(serio
->name
));
555 strlcpy(serio
->phys
, "synaptics-pt/serio0", sizeof(serio
->name
));
556 serio
->write
= synaptics_pt_write
;
557 serio
->start
= synaptics_pt_start
;
558 serio
->stop
= synaptics_pt_stop
;
559 serio
->parent
= psmouse
->ps2dev
.serio
;
561 psmouse
->pt_activate
= synaptics_pt_activate
;
563 psmouse_info(psmouse
, "serio: %s port at %s\n",
564 serio
->name
, psmouse
->phys
);
565 serio_register_port(serio
);
568 /*****************************************************************************
569 * Functions to interpret the absolute mode packets
570 ****************************************************************************/
572 static void synaptics_mt_state_set(struct synaptics_mt_state
*state
, int count
,
575 state
->count
= count
;
580 static void synaptics_parse_agm(const unsigned char buf
[],
581 struct synaptics_data
*priv
,
582 struct synaptics_hw_state
*hw
)
584 struct synaptics_hw_state
*agm
= &priv
->agm
;
587 agm_packet_type
= (buf
[5] & 0x30) >> 4;
588 switch (agm_packet_type
) {
590 /* Gesture packet: (x, y, z) half resolution */
592 agm
->x
= (((buf
[4] & 0x0f) << 8) | buf
[1]) << 1;
593 agm
->y
= (((buf
[4] & 0xf0) << 4) | buf
[2]) << 1;
594 agm
->z
= ((buf
[3] & 0x30) | (buf
[5] & 0x0f)) << 1;
598 /* AGM-CONTACT packet: (count, sgm, agm) */
599 synaptics_mt_state_set(&agm
->mt_state
, buf
[1], buf
[2], buf
[4]);
606 /* Record that at least one AGM has been received since last SGM */
607 priv
->agm_pending
= true;
610 static bool is_forcepad
;
612 static int synaptics_parse_hw_state(const unsigned char buf
[],
613 struct synaptics_data
*priv
,
614 struct synaptics_hw_state
*hw
)
616 memset(hw
, 0, sizeof(struct synaptics_hw_state
));
618 if (SYN_MODEL_NEWABS(priv
->model_id
)) {
619 hw
->w
= (((buf
[0] & 0x30) >> 2) |
620 ((buf
[0] & 0x04) >> 1) |
621 ((buf
[3] & 0x04) >> 2));
623 if ((SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) ||
624 SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) &&
626 synaptics_parse_agm(buf
, priv
, hw
);
630 hw
->x
= (((buf
[3] & 0x10) << 8) |
631 ((buf
[1] & 0x0f) << 8) |
633 hw
->y
= (((buf
[3] & 0x20) << 7) |
634 ((buf
[1] & 0xf0) << 4) |
638 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
639 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
643 * ForcePads, like Clickpads, use middle button
644 * bits to report primary button clicks.
645 * Unfortunately they report primary button not
646 * only when user presses on the pad above certain
647 * threshold, but also when there are more than one
648 * finger on the touchpad, which interferes with
649 * out multi-finger gestures.
653 priv
->press
= priv
->report_press
= false;
654 } else if (hw
->w
>= 4 && ((buf
[0] ^ buf
[3]) & 0x01)) {
656 * Single-finger touch with pressure above
657 * the threshold. If pressure stays long
658 * enough, we'll start reporting primary
659 * button. We rely on the device continuing
660 * sending data even if finger does not
664 priv
->press_start
= jiffies
;
666 } else if (time_after(jiffies
,
668 msecs_to_jiffies(50))) {
669 priv
->report_press
= true;
675 hw
->left
= priv
->report_press
;
677 } else if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
679 * Clickpad's button is transmitted as middle button,
680 * however, since it is primary button, we will report
683 hw
->left
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
685 } else if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
686 hw
->middle
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
688 hw
->scroll
= (signed char)(buf
[1]);
691 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
692 hw
->up
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
693 hw
->down
= ((buf
[0] ^ buf
[3]) & 0x02) ? 1 : 0;
696 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) &&
697 ((buf
[0] ^ buf
[3]) & 0x02)) {
698 switch (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) & ~0x01) {
701 * if nExtBtn is greater than 8 it should be
702 * considered invalid and treated as 0
706 hw
->ext_buttons
|= ((buf
[5] & 0x08)) ? 0x80 : 0;
707 hw
->ext_buttons
|= ((buf
[4] & 0x08)) ? 0x40 : 0;
709 hw
->ext_buttons
|= ((buf
[5] & 0x04)) ? 0x20 : 0;
710 hw
->ext_buttons
|= ((buf
[4] & 0x04)) ? 0x10 : 0;
712 hw
->ext_buttons
|= ((buf
[5] & 0x02)) ? 0x08 : 0;
713 hw
->ext_buttons
|= ((buf
[4] & 0x02)) ? 0x04 : 0;
715 hw
->ext_buttons
|= ((buf
[5] & 0x01)) ? 0x02 : 0;
716 hw
->ext_buttons
|= ((buf
[4] & 0x01)) ? 0x01 : 0;
720 hw
->x
= (((buf
[1] & 0x1f) << 8) | buf
[2]);
721 hw
->y
= (((buf
[4] & 0x1f) << 8) | buf
[5]);
723 hw
->z
= (((buf
[0] & 0x30) << 2) | (buf
[3] & 0x3F));
724 hw
->w
= (((buf
[1] & 0x80) >> 4) | ((buf
[0] & 0x04) >> 1));
726 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
727 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
731 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
732 * is used by some firmware to indicate a finger at the edge of
733 * the touchpad whose precise position cannot be determined, so
734 * convert these values to the maximum axis value.
736 if (hw
->x
> X_MAX_POSITIVE
)
737 hw
->x
-= 1 << ABS_POS_BITS
;
738 else if (hw
->x
== X_MAX_POSITIVE
)
741 if (hw
->y
> Y_MAX_POSITIVE
)
742 hw
->y
-= 1 << ABS_POS_BITS
;
743 else if (hw
->y
== Y_MAX_POSITIVE
)
749 static void synaptics_report_semi_mt_slot(struct input_dev
*dev
, int slot
,
750 bool active
, int x
, int y
)
752 input_mt_slot(dev
, slot
);
753 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, active
);
755 input_report_abs(dev
, ABS_MT_POSITION_X
, x
);
756 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(y
));
760 static void synaptics_report_semi_mt_data(struct input_dev
*dev
,
761 const struct synaptics_hw_state
*a
,
762 const struct synaptics_hw_state
*b
,
765 if (num_fingers
>= 2) {
766 synaptics_report_semi_mt_slot(dev
, 0, true, min(a
->x
, b
->x
),
768 synaptics_report_semi_mt_slot(dev
, 1, true, max(a
->x
, b
->x
),
770 } else if (num_fingers
== 1) {
771 synaptics_report_semi_mt_slot(dev
, 0, true, a
->x
, a
->y
);
772 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
774 synaptics_report_semi_mt_slot(dev
, 0, false, 0, 0);
775 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
779 static void synaptics_report_buttons(struct psmouse
*psmouse
,
780 const struct synaptics_hw_state
*hw
)
782 struct input_dev
*dev
= psmouse
->dev
;
783 struct synaptics_data
*priv
= psmouse
->private;
786 input_report_key(dev
, BTN_LEFT
, hw
->left
);
787 input_report_key(dev
, BTN_RIGHT
, hw
->right
);
789 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
790 input_report_key(dev
, BTN_MIDDLE
, hw
->middle
);
792 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
793 input_report_key(dev
, BTN_FORWARD
, hw
->up
);
794 input_report_key(dev
, BTN_BACK
, hw
->down
);
797 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
798 input_report_key(dev
, BTN_0
+ i
, hw
->ext_buttons
& (1 << i
));
801 static void synaptics_report_slot(struct input_dev
*dev
, int slot
,
802 const struct synaptics_hw_state
*hw
)
804 input_mt_slot(dev
, slot
);
805 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, (hw
!= NULL
));
809 input_report_abs(dev
, ABS_MT_POSITION_X
, hw
->x
);
810 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(hw
->y
));
811 input_report_abs(dev
, ABS_MT_PRESSURE
, hw
->z
);
814 static void synaptics_report_mt_data(struct psmouse
*psmouse
,
815 struct synaptics_mt_state
*mt_state
,
816 const struct synaptics_hw_state
*sgm
)
818 struct input_dev
*dev
= psmouse
->dev
;
819 struct synaptics_data
*priv
= psmouse
->private;
820 struct synaptics_hw_state
*agm
= &priv
->agm
;
821 struct synaptics_mt_state
*old
= &priv
->mt_state
;
823 switch (mt_state
->count
) {
825 synaptics_report_slot(dev
, 0, NULL
);
826 synaptics_report_slot(dev
, 1, NULL
);
829 if (mt_state
->sgm
== -1) {
830 synaptics_report_slot(dev
, 0, NULL
);
831 synaptics_report_slot(dev
, 1, NULL
);
832 } else if (mt_state
->sgm
== 0) {
833 synaptics_report_slot(dev
, 0, sgm
);
834 synaptics_report_slot(dev
, 1, NULL
);
836 synaptics_report_slot(dev
, 0, NULL
);
837 synaptics_report_slot(dev
, 1, sgm
);
842 * If the finger slot contained in SGM is valid, and either
843 * hasn't changed, or is new, or the old SGM has now moved to
844 * AGM, then report SGM in MTB slot 0.
845 * Otherwise, empty MTB slot 0.
847 if (mt_state
->sgm
!= -1 &&
848 (mt_state
->sgm
== old
->sgm
||
849 old
->sgm
== -1 || mt_state
->agm
== old
->sgm
))
850 synaptics_report_slot(dev
, 0, sgm
);
852 synaptics_report_slot(dev
, 0, NULL
);
855 * If the finger slot contained in AGM is valid, and either
856 * hasn't changed, or is new, then report AGM in MTB slot 1.
857 * Otherwise, empty MTB slot 1.
859 * However, in the case where the AGM is new, make sure that
860 * that it is either the same as the old SGM, or there was no
863 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
864 * the new AGM will keep the old SGM's tracking ID, which can
865 * cause apparent drumroll. This happens if in the following
866 * valid finger sequence:
868 * Action SGM AGM (MTB slot:Contact)
869 * 1. Touch contact 0 (0:0)
870 * 2. Touch contact 1 (0:0, 1:1)
871 * 3. Lift contact 0 (1:1)
872 * 4. Touch contacts 2,3 (0:2, 1:3)
874 * In step 4, contact 3, in AGM must not be given the same
875 * tracking ID as contact 1 had in step 3. To avoid this,
876 * the first agm with contact 3 is dropped and slot 1 is
877 * invalidated (tracking ID = -1).
879 if (mt_state
->agm
!= -1 &&
880 (mt_state
->agm
== old
->agm
||
882 (old
->sgm
== -1 || mt_state
->agm
== old
->sgm
))))
883 synaptics_report_slot(dev
, 1, agm
);
885 synaptics_report_slot(dev
, 1, NULL
);
889 /* Don't use active slot count to generate BTN_TOOL events. */
890 input_mt_report_pointer_emulation(dev
, false);
892 /* Send the number of fingers reported by touchpad itself. */
893 input_mt_report_finger_count(dev
, mt_state
->count
);
895 synaptics_report_buttons(psmouse
, sgm
);
900 /* Handle case where mt_state->count = 0 */
901 static void synaptics_image_sensor_0f(struct synaptics_data
*priv
,
902 struct synaptics_mt_state
*mt_state
)
904 synaptics_mt_state_set(mt_state
, 0, -1, -1);
905 priv
->mt_state_lost
= false;
908 /* Handle case where mt_state->count = 1 */
909 static void synaptics_image_sensor_1f(struct synaptics_data
*priv
,
910 struct synaptics_mt_state
*mt_state
)
912 struct synaptics_hw_state
*agm
= &priv
->agm
;
913 struct synaptics_mt_state
*old
= &priv
->mt_state
;
916 * If the last AGM was (0,0,0), and there is only one finger left,
917 * then we absolutely know that SGM contains slot 0, and all other
918 * fingers have been removed.
920 if (priv
->agm_pending
&& agm
->z
== 0) {
921 synaptics_mt_state_set(mt_state
, 1, 0, -1);
922 priv
->mt_state_lost
= false;
926 switch (old
->count
) {
928 synaptics_mt_state_set(mt_state
, 1, 0, -1);
932 * If mt_state_lost, then the previous transition was 3->1,
933 * and SGM now contains either slot 0 or 1, but we don't know
934 * which. So, we just assume that the SGM now contains slot 1.
936 * If pending AGM and either:
937 * (a) the previous SGM slot contains slot 0, or
938 * (b) there was no SGM slot
939 * then, the SGM now contains slot 1
941 * Case (a) happens with very rapid "drum roll" gestures, where
942 * slot 0 finger is lifted and a new slot 1 finger touches
943 * within one reporting interval.
945 * Case (b) happens if initially two or more fingers tap
946 * briefly, and all but one lift before the end of the first
947 * reporting interval.
949 * (In both these cases, slot 0 will becomes empty, so SGM
950 * contains slot 1 with the new finger)
952 * Else, if there was no previous SGM, it now contains slot 0.
954 * Otherwise, SGM still contains the same slot.
956 if (priv
->mt_state_lost
||
957 (priv
->agm_pending
&& old
->sgm
<= 0))
958 synaptics_mt_state_set(mt_state
, 1, 1, -1);
959 else if (old
->sgm
== -1)
960 synaptics_mt_state_set(mt_state
, 1, 0, -1);
964 * If mt_state_lost, we don't know which finger SGM contains.
966 * So, report 1 finger, but with both slots empty.
967 * We will use slot 1 on subsequent 1->1
969 if (priv
->mt_state_lost
) {
970 synaptics_mt_state_set(mt_state
, 1, -1, -1);
974 * Since the last AGM was NOT (0,0,0), it was the finger in
975 * slot 0 that has been removed.
976 * So, SGM now contains previous AGM's slot, and AGM is now
979 synaptics_mt_state_set(mt_state
, 1, old
->agm
, -1);
983 * Since last AGM was not (0,0,0), we don't know which finger
986 * So, report 1 finger, but with both slots empty.
987 * We will use slot 1 on subsequent 1->1
989 synaptics_mt_state_set(mt_state
, 1, -1, -1);
990 priv
->mt_state_lost
= true;
994 /* mt_state was updated by AGM-CONTACT packet */
999 /* Handle case where mt_state->count = 2 */
1000 static void synaptics_image_sensor_2f(struct synaptics_data
*priv
,
1001 struct synaptics_mt_state
*mt_state
)
1003 struct synaptics_mt_state
*old
= &priv
->mt_state
;
1005 switch (old
->count
) {
1007 synaptics_mt_state_set(mt_state
, 2, 0, 1);
1011 * If previous SGM contained slot 1 or higher, SGM now contains
1012 * slot 0 (the newly touching finger) and AGM contains SGM's
1015 * Otherwise, SGM still contains slot 0 and AGM now contains
1019 synaptics_mt_state_set(mt_state
, 2, 0, old
->sgm
);
1021 synaptics_mt_state_set(mt_state
, 2, 0, 1);
1025 * If mt_state_lost, SGM now contains either finger 1 or 2, but
1026 * we don't know which.
1027 * So, we just assume that the SGM contains slot 0 and AGM 1.
1029 if (priv
->mt_state_lost
)
1030 synaptics_mt_state_set(mt_state
, 2, 0, 1);
1032 * Otherwise, use the same mt_state, since it either hasn't
1033 * changed, or was updated by a recently received AGM-CONTACT
1039 * 3->2 transitions have two unsolvable problems:
1040 * 1) no indication is given which finger was removed
1041 * 2) no way to tell if agm packet was for finger 3
1042 * before 3->2, or finger 2 after 3->2.
1044 * So, report 2 fingers, but empty all slots.
1045 * We will guess slots [0,1] on subsequent 2->2.
1047 synaptics_mt_state_set(mt_state
, 2, -1, -1);
1048 priv
->mt_state_lost
= true;
1052 /* mt_state was updated by AGM-CONTACT packet */
1057 /* Handle case where mt_state->count = 3 */
1058 static void synaptics_image_sensor_3f(struct synaptics_data
*priv
,
1059 struct synaptics_mt_state
*mt_state
)
1061 struct synaptics_mt_state
*old
= &priv
->mt_state
;
1063 switch (old
->count
) {
1065 synaptics_mt_state_set(mt_state
, 3, 0, 2);
1069 * If previous SGM contained slot 2 or higher, SGM now contains
1070 * slot 0 (one of the newly touching fingers) and AGM contains
1071 * SGM's previous slot.
1073 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1076 synaptics_mt_state_set(mt_state
, 3, 0, old
->sgm
);
1078 synaptics_mt_state_set(mt_state
, 3, 0, 2);
1082 * If the AGM previously contained slot 3 or higher, then the
1083 * newly touching finger is in the lowest available slot.
1085 * If SGM was previously 1 or higher, then the new SGM is
1086 * now slot 0 (with a new finger), otherwise, the new finger
1087 * is now in a hidden slot between 0 and AGM's slot.
1089 * In all such cases, the SGM now contains slot 0, and the AGM
1090 * continues to contain the same slot as before.
1092 if (old
->agm
>= 3) {
1093 synaptics_mt_state_set(mt_state
, 3, 0, old
->agm
);
1098 * After some 3->1 and all 3->2 transitions, we lose track
1099 * of which slot is reported by SGM and AGM.
1101 * For 2->3 in this state, report 3 fingers, but empty all
1102 * slots, and we will guess (0,2) on a subsequent 0->3.
1104 * To userspace, the resulting transition will look like:
1105 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1107 if (priv
->mt_state_lost
) {
1108 synaptics_mt_state_set(mt_state
, 3, -1, -1);
1113 * If the (SGM,AGM) really previously contained slots (0, 1),
1114 * then we cannot know what slot was just reported by the AGM,
1115 * because the 2->3 transition can occur either before or after
1116 * the AGM packet. Thus, this most recent AGM could contain
1117 * either the same old slot 1 or the new slot 2.
1118 * Subsequent AGMs will be reporting slot 2.
1120 * To userspace, the resulting transition will look like:
1121 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1123 synaptics_mt_state_set(mt_state
, 3, 0, -1);
1127 * If, for whatever reason, the previous agm was invalid,
1128 * Assume SGM now contains slot 0, AGM now contains slot 2.
1131 synaptics_mt_state_set(mt_state
, 3, 0, 2);
1133 * mt_state either hasn't changed, or was updated by a recently
1134 * received AGM-CONTACT packet.
1140 /* mt_state was updated by AGM-CONTACT packet */
1145 /* Handle case where mt_state->count = 4, or = 5 */
1146 static void synaptics_image_sensor_45f(struct synaptics_data
*priv
,
1147 struct synaptics_mt_state
*mt_state
)
1149 /* mt_state was updated correctly by AGM-CONTACT packet */
1150 priv
->mt_state_lost
= false;
1153 static void synaptics_image_sensor_process(struct psmouse
*psmouse
,
1154 struct synaptics_hw_state
*sgm
)
1156 struct synaptics_data
*priv
= psmouse
->private;
1157 struct synaptics_hw_state
*agm
= &priv
->agm
;
1158 struct synaptics_mt_state mt_state
;
1160 /* Initialize using current mt_state (as updated by last agm) */
1161 mt_state
= agm
->mt_state
;
1164 * Update mt_state using the new finger count and current mt_state.
1167 synaptics_image_sensor_0f(priv
, &mt_state
);
1168 else if (sgm
->w
>= 4)
1169 synaptics_image_sensor_1f(priv
, &mt_state
);
1170 else if (sgm
->w
== 0)
1171 synaptics_image_sensor_2f(priv
, &mt_state
);
1172 else if (sgm
->w
== 1 && mt_state
.count
<= 3)
1173 synaptics_image_sensor_3f(priv
, &mt_state
);
1175 synaptics_image_sensor_45f(priv
, &mt_state
);
1177 /* Send resulting input events to user space */
1178 synaptics_report_mt_data(psmouse
, &mt_state
, sgm
);
1180 /* Store updated mt_state */
1181 priv
->mt_state
= agm
->mt_state
= mt_state
;
1182 priv
->agm_pending
= false;
1185 static void synaptics_profile_sensor_process(struct psmouse
*psmouse
,
1186 struct synaptics_hw_state
*sgm
,
1189 struct input_dev
*dev
= psmouse
->dev
;
1190 struct synaptics_data
*priv
= psmouse
->private;
1191 struct synaptics_hw_state
*hw
[2] = { sgm
, &priv
->agm
};
1192 struct input_mt_pos pos
[2];
1193 int slot
[2], nsemi
, i
;
1195 nsemi
= clamp_val(num_fingers
, 0, 2);
1197 for (i
= 0; i
< nsemi
; i
++) {
1198 pos
[i
].x
= hw
[i
]->x
;
1199 pos
[i
].y
= synaptics_invert_y(hw
[i
]->y
);
1202 input_mt_assign_slots(dev
, slot
, pos
, nsemi
);
1204 for (i
= 0; i
< nsemi
; i
++) {
1205 input_mt_slot(dev
, slot
[i
]);
1206 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, true);
1207 input_report_abs(dev
, ABS_MT_POSITION_X
, pos
[i
].x
);
1208 input_report_abs(dev
, ABS_MT_POSITION_Y
, pos
[i
].y
);
1209 input_report_abs(dev
, ABS_MT_PRESSURE
, hw
[i
]->z
);
1212 input_mt_drop_unused(dev
);
1213 input_mt_report_pointer_emulation(dev
, false);
1214 input_mt_report_finger_count(dev
, num_fingers
);
1216 synaptics_report_buttons(psmouse
, sgm
);
1222 * called for each full received packet from the touchpad
1224 static void synaptics_process_packet(struct psmouse
*psmouse
)
1226 struct input_dev
*dev
= psmouse
->dev
;
1227 struct synaptics_data
*priv
= psmouse
->private;
1228 struct synaptics_hw_state hw
;
1232 if (synaptics_parse_hw_state(psmouse
->packet
, priv
, &hw
))
1235 if (SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) {
1236 synaptics_image_sensor_process(psmouse
, &hw
);
1241 priv
->scroll
+= hw
.scroll
;
1243 while (priv
->scroll
>= 4) {
1244 input_report_key(dev
, BTN_BACK
, !hw
.down
);
1246 input_report_key(dev
, BTN_BACK
, hw
.down
);
1250 while (priv
->scroll
<= -4) {
1251 input_report_key(dev
, BTN_FORWARD
, !hw
.up
);
1253 input_report_key(dev
, BTN_FORWARD
, hw
.up
);
1260 if (hw
.z
> 0 && hw
.x
> 1) {
1263 if (SYN_CAP_EXTENDED(priv
->capabilities
)) {
1266 if (SYN_CAP_MULTIFINGER(priv
->capabilities
))
1267 num_fingers
= hw
.w
+ 2;
1270 if (SYN_MODEL_PEN(priv
->model_id
))
1271 ; /* Nothing, treat a pen as a single finger */
1274 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1275 finger_width
= hw
.w
;
1284 if (cr48_profile_sensor
) {
1285 synaptics_profile_sensor_process(psmouse
, &hw
, num_fingers
);
1289 if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
))
1290 synaptics_report_semi_mt_data(dev
, &hw
, &priv
->agm
,
1294 * BTN_TOUCH has to be first as mousedev relies on it when doing
1295 * absolute -> relative conversion
1297 if (hw
.z
> 30) input_report_key(dev
, BTN_TOUCH
, 1);
1298 if (hw
.z
< 25) input_report_key(dev
, BTN_TOUCH
, 0);
1300 if (num_fingers
> 0) {
1301 input_report_abs(dev
, ABS_X
, hw
.x
);
1302 input_report_abs(dev
, ABS_Y
, synaptics_invert_y(hw
.y
));
1304 input_report_abs(dev
, ABS_PRESSURE
, hw
.z
);
1306 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1307 input_report_abs(dev
, ABS_TOOL_WIDTH
, finger_width
);
1309 input_report_key(dev
, BTN_TOOL_FINGER
, num_fingers
== 1);
1310 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
1311 input_report_key(dev
, BTN_TOOL_DOUBLETAP
, num_fingers
== 2);
1312 input_report_key(dev
, BTN_TOOL_TRIPLETAP
, num_fingers
== 3);
1315 synaptics_report_buttons(psmouse
, &hw
);
1320 static int synaptics_validate_byte(struct psmouse
*psmouse
,
1321 int idx
, unsigned char pkt_type
)
1323 static const unsigned char newabs_mask
[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1324 static const unsigned char newabs_rel_mask
[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1325 static const unsigned char newabs_rslt
[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1326 static const unsigned char oldabs_mask
[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1327 static const unsigned char oldabs_rslt
[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1328 const char *packet
= psmouse
->packet
;
1330 if (idx
< 0 || idx
> 4)
1336 case SYN_NEWABS_RELAXED
:
1337 return (packet
[idx
] & newabs_rel_mask
[idx
]) == newabs_rslt
[idx
];
1339 case SYN_NEWABS_STRICT
:
1340 return (packet
[idx
] & newabs_mask
[idx
]) == newabs_rslt
[idx
];
1343 return (packet
[idx
] & oldabs_mask
[idx
]) == oldabs_rslt
[idx
];
1346 psmouse_err(psmouse
, "unknown packet type %d\n", pkt_type
);
1351 static unsigned char synaptics_detect_pkt_type(struct psmouse
*psmouse
)
1355 for (i
= 0; i
< 5; i
++)
1356 if (!synaptics_validate_byte(psmouse
, i
, SYN_NEWABS_STRICT
)) {
1357 psmouse_info(psmouse
, "using relaxed packet validation\n");
1358 return SYN_NEWABS_RELAXED
;
1361 return SYN_NEWABS_STRICT
;
1364 static psmouse_ret_t
synaptics_process_byte(struct psmouse
*psmouse
)
1366 struct synaptics_data
*priv
= psmouse
->private;
1368 if (psmouse
->pktcnt
>= 6) { /* Full packet received */
1369 if (unlikely(priv
->pkt_type
== SYN_NEWABS
))
1370 priv
->pkt_type
= synaptics_detect_pkt_type(psmouse
);
1372 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
) &&
1373 synaptics_is_pt_packet(psmouse
->packet
)) {
1375 synaptics_pass_pt_packet(priv
->pt_port
, psmouse
->packet
);
1377 synaptics_process_packet(psmouse
);
1379 return PSMOUSE_FULL_PACKET
;
1382 return synaptics_validate_byte(psmouse
, psmouse
->pktcnt
- 1, priv
->pkt_type
) ?
1383 PSMOUSE_GOOD_DATA
: PSMOUSE_BAD_DATA
;
1386 /*****************************************************************************
1387 * Driver initialization/cleanup functions
1388 ****************************************************************************/
1389 static void set_abs_position_params(struct input_dev
*dev
,
1390 struct synaptics_data
*priv
, int x_code
,
1393 int x_min
= priv
->x_min
?: XMIN_NOMINAL
;
1394 int x_max
= priv
->x_max
?: XMAX_NOMINAL
;
1395 int y_min
= priv
->y_min
?: YMIN_NOMINAL
;
1396 int y_max
= priv
->y_max
?: YMAX_NOMINAL
;
1397 int fuzz
= SYN_CAP_REDUCED_FILTERING(priv
->ext_cap_0c
) ?
1398 SYN_REDUCED_FILTER_FUZZ
: 0;
1400 input_set_abs_params(dev
, x_code
, x_min
, x_max
, fuzz
, 0);
1401 input_set_abs_params(dev
, y_code
, y_min
, y_max
, fuzz
, 0);
1402 input_abs_set_res(dev
, x_code
, priv
->x_res
);
1403 input_abs_set_res(dev
, y_code
, priv
->y_res
);
1406 static void set_input_params(struct psmouse
*psmouse
,
1407 struct synaptics_data
*priv
)
1409 struct input_dev
*dev
= psmouse
->dev
;
1412 /* Things that apply to both modes */
1413 __set_bit(INPUT_PROP_POINTER
, dev
->propbit
);
1414 __set_bit(EV_KEY
, dev
->evbit
);
1415 __set_bit(BTN_LEFT
, dev
->keybit
);
1416 __set_bit(BTN_RIGHT
, dev
->keybit
);
1418 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
1419 __set_bit(BTN_MIDDLE
, dev
->keybit
);
1421 if (!priv
->absolute_mode
) {
1423 __set_bit(EV_REL
, dev
->evbit
);
1424 __set_bit(REL_X
, dev
->relbit
);
1425 __set_bit(REL_Y
, dev
->relbit
);
1430 __set_bit(EV_ABS
, dev
->evbit
);
1431 set_abs_position_params(dev
, priv
, ABS_X
, ABS_Y
);
1432 input_set_abs_params(dev
, ABS_PRESSURE
, 0, 255, 0, 0);
1434 if (cr48_profile_sensor
)
1435 input_set_abs_params(dev
, ABS_MT_PRESSURE
, 0, 255, 0, 0);
1437 if (SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) {
1438 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
1440 /* Image sensors can report per-contact pressure */
1441 input_set_abs_params(dev
, ABS_MT_PRESSURE
, 0, 255, 0, 0);
1442 input_mt_init_slots(dev
, 2, INPUT_MT_POINTER
);
1444 /* Image sensors can signal 4 and 5 finger clicks */
1445 __set_bit(BTN_TOOL_QUADTAP
, dev
->keybit
);
1446 __set_bit(BTN_TOOL_QUINTTAP
, dev
->keybit
);
1447 } else if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
)) {
1448 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
1451 * Profile sensor in CR-48 tracks contacts reasonably well,
1452 * other non-image sensors with AGM use semi-mt.
1454 input_mt_init_slots(dev
, 2,
1456 (cr48_profile_sensor
?
1457 INPUT_MT_TRACK
: INPUT_MT_SEMI_MT
));
1460 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1461 input_set_abs_params(dev
, ABS_TOOL_WIDTH
, 0, 15, 0, 0);
1463 __set_bit(BTN_TOUCH
, dev
->keybit
);
1464 __set_bit(BTN_TOOL_FINGER
, dev
->keybit
);
1466 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
1467 __set_bit(BTN_TOOL_DOUBLETAP
, dev
->keybit
);
1468 __set_bit(BTN_TOOL_TRIPLETAP
, dev
->keybit
);
1471 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
) ||
1472 SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
1473 __set_bit(BTN_FORWARD
, dev
->keybit
);
1474 __set_bit(BTN_BACK
, dev
->keybit
);
1477 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
1478 __set_bit(BTN_0
+ i
, dev
->keybit
);
1480 __clear_bit(EV_REL
, dev
->evbit
);
1481 __clear_bit(REL_X
, dev
->relbit
);
1482 __clear_bit(REL_Y
, dev
->relbit
);
1484 if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
1485 __set_bit(INPUT_PROP_BUTTONPAD
, dev
->propbit
);
1486 if (psmouse_matches_pnp_id(psmouse
, topbuttonpad_pnp_ids
))
1487 __set_bit(INPUT_PROP_TOPBUTTONPAD
, dev
->propbit
);
1488 /* Clickpads report only left button */
1489 __clear_bit(BTN_RIGHT
, dev
->keybit
);
1490 __clear_bit(BTN_MIDDLE
, dev
->keybit
);
1494 static ssize_t
synaptics_show_disable_gesture(struct psmouse
*psmouse
,
1495 void *data
, char *buf
)
1497 struct synaptics_data
*priv
= psmouse
->private;
1499 return sprintf(buf
, "%c\n", priv
->disable_gesture
? '1' : '0');
1502 static ssize_t
synaptics_set_disable_gesture(struct psmouse
*psmouse
,
1503 void *data
, const char *buf
,
1506 struct synaptics_data
*priv
= psmouse
->private;
1510 err
= kstrtouint(buf
, 10, &value
);
1517 if (value
== priv
->disable_gesture
)
1520 priv
->disable_gesture
= value
;
1522 priv
->mode
|= SYN_BIT_DISABLE_GESTURE
;
1524 priv
->mode
&= ~SYN_BIT_DISABLE_GESTURE
;
1526 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
1532 PSMOUSE_DEFINE_ATTR(disable_gesture
, S_IWUSR
| S_IRUGO
, NULL
,
1533 synaptics_show_disable_gesture
,
1534 synaptics_set_disable_gesture
);
1536 static void synaptics_disconnect(struct psmouse
*psmouse
)
1538 struct synaptics_data
*priv
= psmouse
->private;
1540 if (!priv
->absolute_mode
&& SYN_ID_DISGEST_SUPPORTED(priv
->identity
))
1541 device_remove_file(&psmouse
->ps2dev
.serio
->dev
,
1542 &psmouse_attr_disable_gesture
.dattr
);
1544 synaptics_reset(psmouse
);
1546 psmouse
->private = NULL
;
1549 static int synaptics_reconnect(struct psmouse
*psmouse
)
1551 struct synaptics_data
*priv
= psmouse
->private;
1552 struct synaptics_data old_priv
= *priv
;
1553 unsigned char param
[2];
1558 psmouse_reset(psmouse
);
1561 * On some boxes, right after resuming, the touchpad
1562 * needs some time to finish initializing (I assume
1563 * it needs time to calibrate) and start responding
1564 * to Synaptics-specific queries, so let's wait a
1569 ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETID
);
1570 error
= synaptics_detect(psmouse
, 0);
1571 } while (error
&& ++retry
< 3);
1577 psmouse_dbg(psmouse
, "reconnected after %d tries\n", retry
);
1579 if (synaptics_query_hardware(psmouse
)) {
1580 psmouse_err(psmouse
, "Unable to query device.\n");
1584 if (synaptics_set_mode(psmouse
)) {
1585 psmouse_err(psmouse
, "Unable to initialize device.\n");
1589 if (old_priv
.identity
!= priv
->identity
||
1590 old_priv
.model_id
!= priv
->model_id
||
1591 old_priv
.capabilities
!= priv
->capabilities
||
1592 old_priv
.ext_cap
!= priv
->ext_cap
) {
1593 psmouse_err(psmouse
,
1594 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1595 old_priv
.identity
, priv
->identity
,
1596 old_priv
.model_id
, priv
->model_id
,
1597 old_priv
.capabilities
, priv
->capabilities
,
1598 old_priv
.ext_cap
, priv
->ext_cap
);
1605 static bool impaired_toshiba_kbc
;
1607 static const struct dmi_system_id toshiba_dmi_table
[] __initconst
= {
1608 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1610 /* Toshiba Satellite */
1612 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1613 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite"),
1617 /* Toshiba Dynabook */
1619 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1620 DMI_MATCH(DMI_PRODUCT_NAME
, "dynabook"),
1624 /* Toshiba Portege M300 */
1626 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1627 DMI_MATCH(DMI_PRODUCT_NAME
, "PORTEGE M300"),
1632 /* Toshiba Portege M300 */
1634 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1635 DMI_MATCH(DMI_PRODUCT_NAME
, "Portable PC"),
1636 DMI_MATCH(DMI_PRODUCT_VERSION
, "Version 1.0"),
1644 static bool broken_olpc_ec
;
1646 static const struct dmi_system_id olpc_dmi_table
[] __initconst
= {
1647 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1649 /* OLPC XO-1 or XO-1.5 */
1651 DMI_MATCH(DMI_SYS_VENDOR
, "OLPC"),
1652 DMI_MATCH(DMI_PRODUCT_NAME
, "XO"),
1659 static const struct dmi_system_id __initconst cr48_dmi_table
[] = {
1660 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1662 /* Cr-48 Chromebook (Codename Mario) */
1664 DMI_MATCH(DMI_SYS_VENDOR
, "IEC"),
1665 DMI_MATCH(DMI_PRODUCT_NAME
, "Mario"),
1672 static const struct dmi_system_id forcepad_dmi_table
[] __initconst
= {
1673 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1676 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1677 DMI_MATCH(DMI_PRODUCT_NAME
, "HP EliteBook Folio 1040 G1"),
1684 void __init
synaptics_module_init(void)
1686 impaired_toshiba_kbc
= dmi_check_system(toshiba_dmi_table
);
1687 broken_olpc_ec
= dmi_check_system(olpc_dmi_table
);
1688 cr48_profile_sensor
= dmi_check_system(cr48_dmi_table
);
1691 * Unfortunately ForcePad capability is not exported over PS/2,
1692 * so we have to resort to checking DMI.
1694 is_forcepad
= dmi_check_system(forcepad_dmi_table
);
1697 static int __synaptics_init(struct psmouse
*psmouse
, bool absolute_mode
)
1699 struct synaptics_data
*priv
;
1703 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1704 * packet spew overloads the EC such that key presses on the keyboard
1705 * are missed. Given that, don't even attempt to use Absolute mode.
1706 * Relative mode seems to work just fine.
1708 if (absolute_mode
&& broken_olpc_ec
) {
1709 psmouse_info(psmouse
,
1710 "OLPC XO detected, not enabling Synaptics protocol.\n");
1714 psmouse
->private = priv
= kzalloc(sizeof(struct synaptics_data
), GFP_KERNEL
);
1718 psmouse_reset(psmouse
);
1720 if (synaptics_query_hardware(psmouse
)) {
1721 psmouse_err(psmouse
, "Unable to query device.\n");
1725 priv
->absolute_mode
= absolute_mode
;
1726 if (SYN_ID_DISGEST_SUPPORTED(priv
->identity
))
1727 priv
->disable_gesture
= true;
1729 if (synaptics_set_mode(psmouse
)) {
1730 psmouse_err(psmouse
, "Unable to initialize device.\n");
1734 priv
->pkt_type
= SYN_MODEL_NEWABS(priv
->model_id
) ? SYN_NEWABS
: SYN_OLDABS
;
1736 psmouse_info(psmouse
,
1737 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1738 SYN_ID_MODEL(priv
->identity
),
1739 SYN_ID_MAJOR(priv
->identity
), SYN_ID_MINOR(priv
->identity
),
1741 priv
->capabilities
, priv
->ext_cap
, priv
->ext_cap_0c
,
1742 priv
->board_id
, priv
->firmware_id
);
1744 set_input_params(psmouse
, priv
);
1747 * Encode touchpad model so that it can be used to set
1748 * input device->id.version and be visible to userspace.
1749 * Because version is __u16 we have to drop something.
1750 * Hardware info bits seem to be good candidates as they
1751 * are documented to be for Synaptics corp. internal use.
1753 psmouse
->model
= ((priv
->model_id
& 0x00ff0000) >> 8) |
1754 (priv
->model_id
& 0x000000ff);
1756 if (absolute_mode
) {
1757 psmouse
->protocol_handler
= synaptics_process_byte
;
1758 psmouse
->pktsize
= 6;
1760 /* Relative mode follows standard PS/2 mouse protocol */
1761 psmouse
->protocol_handler
= psmouse_process_byte
;
1762 psmouse
->pktsize
= 3;
1765 psmouse
->set_rate
= synaptics_set_rate
;
1766 psmouse
->disconnect
= synaptics_disconnect
;
1767 psmouse
->reconnect
= synaptics_reconnect
;
1768 psmouse
->cleanup
= synaptics_reset
;
1769 /* Synaptics can usually stay in sync without extra help */
1770 psmouse
->resync_time
= 0;
1772 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
))
1773 synaptics_pt_create(psmouse
);
1776 * Toshiba's KBC seems to have trouble handling data from
1777 * Synaptics at full rate. Switch to a lower rate (roughly
1778 * the same rate as a standard PS/2 mouse).
1780 if (psmouse
->rate
>= 80 && impaired_toshiba_kbc
) {
1781 psmouse_info(psmouse
,
1782 "Toshiba %s detected, limiting rate to 40pps.\n",
1783 dmi_get_system_info(DMI_PRODUCT_NAME
));
1787 if (!priv
->absolute_mode
&& SYN_ID_DISGEST_SUPPORTED(priv
->identity
)) {
1788 err
= device_create_file(&psmouse
->ps2dev
.serio
->dev
,
1789 &psmouse_attr_disable_gesture
.dattr
);
1791 psmouse_err(psmouse
,
1792 "Failed to create disable_gesture attribute (%d)",
1805 int synaptics_init(struct psmouse
*psmouse
)
1807 return __synaptics_init(psmouse
, true);
1810 int synaptics_init_relative(struct psmouse
*psmouse
)
1812 return __synaptics_init(psmouse
, false);
1815 bool synaptics_supported(void)
1820 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1822 void __init
synaptics_module_init(void)
1826 int synaptics_init(struct psmouse
*psmouse
)
1831 bool synaptics_supported(void)
1836 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */