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", "LEN0037",
139 "LEN0039", "LEN2002", "LEN2004",
141 1024, 5112, 2024, 4832
144 (const char * const []){"LEN2001", NULL
},
145 1024, 5022, 2508, 4832
148 (const char * const []){"LEN2006", NULL
},
149 1264, 5675, 1171, 4688
154 /* This list has been kindly provided by Synaptics. */
155 static const char * const topbuttonpad_pnp_ids
[] = {
165 "LEN0033", /* Helix */
166 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
167 "LEN0035", /* X240 */
168 "LEN0036", /* T440 */
169 "LEN0037", /* X1 Carbon 2nd */
171 "LEN0039", /* T440s */
173 "LEN0042", /* Yoga */
180 "LEN2001", /* Edge E431 */
181 "LEN2002", /* Edge E531 */
183 "LEN2004", /* L440 */
194 /*****************************************************************************
195 * Synaptics communications functions
196 ****************************************************************************/
199 * Synaptics touchpads report the y coordinate from bottom to top, which is
200 * opposite from what userspace expects.
201 * This function is used to invert y before reporting.
203 static int synaptics_invert_y(int y
)
205 return YMAX_NOMINAL
+ YMIN_NOMINAL
- y
;
209 * Send a command to the synpatics touchpad by special commands
211 static int synaptics_send_cmd(struct psmouse
*psmouse
, unsigned char c
, unsigned char *param
)
213 if (psmouse_sliced_command(psmouse
, c
))
215 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
221 * Read the model-id bytes from the touchpad
222 * see also SYN_MODEL_* macros
224 static int synaptics_model_id(struct psmouse
*psmouse
)
226 struct synaptics_data
*priv
= psmouse
->private;
229 if (synaptics_send_cmd(psmouse
, SYN_QUE_MODEL
, mi
))
231 priv
->model_id
= (mi
[0]<<16) | (mi
[1]<<8) | mi
[2];
236 * Read the board id from the touchpad
237 * The board id is encoded in the "QUERY MODES" response
239 static int synaptics_board_id(struct psmouse
*psmouse
)
241 struct synaptics_data
*priv
= psmouse
->private;
242 unsigned char bid
[3];
244 if (synaptics_send_cmd(psmouse
, SYN_QUE_MODES
, bid
))
246 priv
->board_id
= ((bid
[0] & 0xfc) << 6) | bid
[1];
251 * Read the firmware id from the touchpad
253 static int synaptics_firmware_id(struct psmouse
*psmouse
)
255 struct synaptics_data
*priv
= psmouse
->private;
256 unsigned char fwid
[3];
258 if (synaptics_send_cmd(psmouse
, SYN_QUE_FIRMWARE_ID
, fwid
))
260 priv
->firmware_id
= (fwid
[0] << 16) | (fwid
[1] << 8) | fwid
[2];
265 * Read the capability-bits from the touchpad
266 * see also the SYN_CAP_* macros
268 static int synaptics_capability(struct psmouse
*psmouse
)
270 struct synaptics_data
*priv
= psmouse
->private;
271 unsigned char cap
[3];
273 if (synaptics_send_cmd(psmouse
, SYN_QUE_CAPABILITIES
, cap
))
275 priv
->capabilities
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
276 priv
->ext_cap
= priv
->ext_cap_0c
= 0;
279 * Older firmwares had submodel ID fixed to 0x47
281 if (SYN_ID_FULL(priv
->identity
) < 0x705 &&
282 SYN_CAP_SUBMODEL_ID(priv
->capabilities
) != 0x47) {
287 * Unless capExtended is set the rest of the flags should be ignored
289 if (!SYN_CAP_EXTENDED(priv
->capabilities
))
290 priv
->capabilities
= 0;
292 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 1) {
293 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB
, cap
)) {
294 psmouse_warn(psmouse
,
295 "device claims to have extended capabilities, but I'm not able to read them.\n");
297 priv
->ext_cap
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
300 * if nExtBtn is greater than 8 it should be considered
301 * invalid and treated as 0
303 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) > 8)
304 priv
->ext_cap
&= 0xff0fff;
308 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 4) {
309 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB_0C
, cap
)) {
310 psmouse_warn(psmouse
,
311 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
313 priv
->ext_cap_0c
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
322 * See also the SYN_ID_* macros
324 static int synaptics_identify(struct psmouse
*psmouse
)
326 struct synaptics_data
*priv
= psmouse
->private;
329 if (synaptics_send_cmd(psmouse
, SYN_QUE_IDENTIFY
, id
))
331 priv
->identity
= (id
[0]<<16) | (id
[1]<<8) | id
[2];
332 if (SYN_ID_IS_SYNAPTICS(priv
->identity
))
338 * Read touchpad resolution and maximum reported coordinates
339 * Resolution is left zero if touchpad does not support the query
342 static int synaptics_resolution(struct psmouse
*psmouse
)
344 struct synaptics_data
*priv
= psmouse
->private;
345 unsigned char resp
[3];
348 if (SYN_ID_MAJOR(priv
->identity
) < 4)
351 if (synaptics_send_cmd(psmouse
, SYN_QUE_RESOLUTION
, resp
) == 0) {
352 if (resp
[0] != 0 && (resp
[1] & 0x80) && resp
[2] != 0) {
353 priv
->x_res
= resp
[0]; /* x resolution in units/mm */
354 priv
->y_res
= resp
[2]; /* y resolution in units/mm */
358 for (i
= 0; min_max_pnpid_table
[i
].pnp_ids
; i
++) {
359 if (psmouse_matches_pnp_id(psmouse
,
360 min_max_pnpid_table
[i
].pnp_ids
)) {
361 priv
->x_min
= min_max_pnpid_table
[i
].x_min
;
362 priv
->x_max
= min_max_pnpid_table
[i
].x_max
;
363 priv
->y_min
= min_max_pnpid_table
[i
].y_min
;
364 priv
->y_max
= min_max_pnpid_table
[i
].y_max
;
369 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 5 &&
370 SYN_CAP_MAX_DIMENSIONS(priv
->ext_cap_0c
)) {
371 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MAX_COORDS
, resp
)) {
372 psmouse_warn(psmouse
,
373 "device claims to have max coordinates query, but I'm not able to read it.\n");
375 priv
->x_max
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
376 priv
->y_max
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
380 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 7 &&
381 SYN_CAP_MIN_DIMENSIONS(priv
->ext_cap_0c
)) {
382 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MIN_COORDS
, resp
)) {
383 psmouse_warn(psmouse
,
384 "device claims to have min coordinates query, but I'm not able to read it.\n");
386 priv
->x_min
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
387 priv
->y_min
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
394 static int synaptics_query_hardware(struct psmouse
*psmouse
)
396 if (synaptics_identify(psmouse
))
398 if (synaptics_model_id(psmouse
))
400 if (synaptics_firmware_id(psmouse
))
402 if (synaptics_board_id(psmouse
))
404 if (synaptics_capability(psmouse
))
406 if (synaptics_resolution(psmouse
))
412 static int synaptics_set_advanced_gesture_mode(struct psmouse
*psmouse
)
414 static unsigned char param
= 0xc8;
415 struct synaptics_data
*priv
= psmouse
->private;
417 if (!(SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) ||
418 SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)))
421 if (psmouse_sliced_command(psmouse
, SYN_QUE_MODEL
))
424 if (ps2_command(&psmouse
->ps2dev
, ¶m
, PSMOUSE_CMD_SETRATE
))
427 /* Advanced gesture mode also sends multi finger data */
428 priv
->capabilities
|= BIT(1);
433 static int synaptics_set_mode(struct psmouse
*psmouse
)
435 struct synaptics_data
*priv
= psmouse
->private;
438 if (priv
->absolute_mode
)
439 priv
->mode
|= SYN_BIT_ABSOLUTE_MODE
;
440 if (priv
->disable_gesture
)
441 priv
->mode
|= SYN_BIT_DISABLE_GESTURE
;
442 if (psmouse
->rate
>= 80)
443 priv
->mode
|= SYN_BIT_HIGH_RATE
;
444 if (SYN_CAP_EXTENDED(priv
->capabilities
))
445 priv
->mode
|= SYN_BIT_W_MODE
;
447 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
450 if (priv
->absolute_mode
&&
451 synaptics_set_advanced_gesture_mode(psmouse
)) {
452 psmouse_err(psmouse
, "Advanced gesture mode init failed.\n");
459 static void synaptics_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
461 struct synaptics_data
*priv
= psmouse
->private;
464 priv
->mode
|= SYN_BIT_HIGH_RATE
;
467 priv
->mode
&= ~SYN_BIT_HIGH_RATE
;
471 synaptics_mode_cmd(psmouse
, priv
->mode
);
474 /*****************************************************************************
475 * Synaptics pass-through PS/2 port support
476 ****************************************************************************/
477 static int synaptics_pt_write(struct serio
*serio
, unsigned char c
)
479 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
480 char rate_param
= SYN_PS_CLIENT_CMD
; /* indicates that we want pass-through port */
482 if (psmouse_sliced_command(parent
, c
))
484 if (ps2_command(&parent
->ps2dev
, &rate_param
, PSMOUSE_CMD_SETRATE
))
489 static int synaptics_pt_start(struct serio
*serio
)
491 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
492 struct synaptics_data
*priv
= parent
->private;
494 serio_pause_rx(parent
->ps2dev
.serio
);
495 priv
->pt_port
= serio
;
496 serio_continue_rx(parent
->ps2dev
.serio
);
501 static void synaptics_pt_stop(struct serio
*serio
)
503 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
504 struct synaptics_data
*priv
= parent
->private;
506 serio_pause_rx(parent
->ps2dev
.serio
);
507 priv
->pt_port
= NULL
;
508 serio_continue_rx(parent
->ps2dev
.serio
);
511 static int synaptics_is_pt_packet(unsigned char *buf
)
513 return (buf
[0] & 0xFC) == 0x84 && (buf
[3] & 0xCC) == 0xC4;
516 static void synaptics_pass_pt_packet(struct serio
*ptport
, unsigned char *packet
)
518 struct psmouse
*child
= serio_get_drvdata(ptport
);
520 if (child
&& child
->state
== PSMOUSE_ACTIVATED
) {
521 serio_interrupt(ptport
, packet
[1], 0);
522 serio_interrupt(ptport
, packet
[4], 0);
523 serio_interrupt(ptport
, packet
[5], 0);
524 if (child
->pktsize
== 4)
525 serio_interrupt(ptport
, packet
[2], 0);
527 serio_interrupt(ptport
, packet
[1], 0);
530 static void synaptics_pt_activate(struct psmouse
*psmouse
)
532 struct synaptics_data
*priv
= psmouse
->private;
533 struct psmouse
*child
= serio_get_drvdata(priv
->pt_port
);
535 /* adjust the touchpad to child's choice of protocol */
537 if (child
->pktsize
== 4)
538 priv
->mode
|= SYN_BIT_FOUR_BYTE_CLIENT
;
540 priv
->mode
&= ~SYN_BIT_FOUR_BYTE_CLIENT
;
542 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
543 psmouse_warn(psmouse
,
544 "failed to switch guest protocol\n");
548 static void synaptics_pt_create(struct psmouse
*psmouse
)
552 serio
= kzalloc(sizeof(struct serio
), GFP_KERNEL
);
555 "not enough memory for pass-through port\n");
559 serio
->id
.type
= SERIO_PS_PSTHRU
;
560 strlcpy(serio
->name
, "Synaptics pass-through", sizeof(serio
->name
));
561 strlcpy(serio
->phys
, "synaptics-pt/serio0", sizeof(serio
->name
));
562 serio
->write
= synaptics_pt_write
;
563 serio
->start
= synaptics_pt_start
;
564 serio
->stop
= synaptics_pt_stop
;
565 serio
->parent
= psmouse
->ps2dev
.serio
;
567 psmouse
->pt_activate
= synaptics_pt_activate
;
569 psmouse_info(psmouse
, "serio: %s port at %s\n",
570 serio
->name
, psmouse
->phys
);
571 serio_register_port(serio
);
574 /*****************************************************************************
575 * Functions to interpret the absolute mode packets
576 ****************************************************************************/
578 static void synaptics_mt_state_set(struct synaptics_mt_state
*state
, int count
,
581 state
->count
= count
;
586 static void synaptics_parse_agm(const unsigned char buf
[],
587 struct synaptics_data
*priv
,
588 struct synaptics_hw_state
*hw
)
590 struct synaptics_hw_state
*agm
= &priv
->agm
;
593 agm_packet_type
= (buf
[5] & 0x30) >> 4;
594 switch (agm_packet_type
) {
596 /* Gesture packet: (x, y, z) half resolution */
598 agm
->x
= (((buf
[4] & 0x0f) << 8) | buf
[1]) << 1;
599 agm
->y
= (((buf
[4] & 0xf0) << 4) | buf
[2]) << 1;
600 agm
->z
= ((buf
[3] & 0x30) | (buf
[5] & 0x0f)) << 1;
604 /* AGM-CONTACT packet: (count, sgm, agm) */
605 synaptics_mt_state_set(&agm
->mt_state
, buf
[1], buf
[2], buf
[4]);
612 /* Record that at least one AGM has been received since last SGM */
613 priv
->agm_pending
= true;
616 static bool is_forcepad
;
618 static int synaptics_parse_hw_state(const unsigned char buf
[],
619 struct synaptics_data
*priv
,
620 struct synaptics_hw_state
*hw
)
622 memset(hw
, 0, sizeof(struct synaptics_hw_state
));
624 if (SYN_MODEL_NEWABS(priv
->model_id
)) {
625 hw
->w
= (((buf
[0] & 0x30) >> 2) |
626 ((buf
[0] & 0x04) >> 1) |
627 ((buf
[3] & 0x04) >> 2));
629 if ((SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) ||
630 SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) &&
632 synaptics_parse_agm(buf
, priv
, hw
);
636 hw
->x
= (((buf
[3] & 0x10) << 8) |
637 ((buf
[1] & 0x0f) << 8) |
639 hw
->y
= (((buf
[3] & 0x20) << 7) |
640 ((buf
[1] & 0xf0) << 4) |
644 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
645 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
649 * ForcePads, like Clickpads, use middle button
650 * bits to report primary button clicks.
651 * Unfortunately they report primary button not
652 * only when user presses on the pad above certain
653 * threshold, but also when there are more than one
654 * finger on the touchpad, which interferes with
655 * out multi-finger gestures.
659 priv
->press
= priv
->report_press
= false;
660 } else if (hw
->w
>= 4 && ((buf
[0] ^ buf
[3]) & 0x01)) {
662 * Single-finger touch with pressure above
663 * the threshold. If pressure stays long
664 * enough, we'll start reporting primary
665 * button. We rely on the device continuing
666 * sending data even if finger does not
670 priv
->press_start
= jiffies
;
672 } else if (time_after(jiffies
,
674 msecs_to_jiffies(50))) {
675 priv
->report_press
= true;
681 hw
->left
= priv
->report_press
;
683 } else if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
685 * Clickpad's button is transmitted as middle button,
686 * however, since it is primary button, we will report
689 hw
->left
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
691 } else if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
692 hw
->middle
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
694 hw
->scroll
= (signed char)(buf
[1]);
697 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
698 hw
->up
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
699 hw
->down
= ((buf
[0] ^ buf
[3]) & 0x02) ? 1 : 0;
702 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) &&
703 ((buf
[0] ^ buf
[3]) & 0x02)) {
704 switch (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) & ~0x01) {
707 * if nExtBtn is greater than 8 it should be
708 * considered invalid and treated as 0
712 hw
->ext_buttons
|= ((buf
[5] & 0x08)) ? 0x80 : 0;
713 hw
->ext_buttons
|= ((buf
[4] & 0x08)) ? 0x40 : 0;
715 hw
->ext_buttons
|= ((buf
[5] & 0x04)) ? 0x20 : 0;
716 hw
->ext_buttons
|= ((buf
[4] & 0x04)) ? 0x10 : 0;
718 hw
->ext_buttons
|= ((buf
[5] & 0x02)) ? 0x08 : 0;
719 hw
->ext_buttons
|= ((buf
[4] & 0x02)) ? 0x04 : 0;
721 hw
->ext_buttons
|= ((buf
[5] & 0x01)) ? 0x02 : 0;
722 hw
->ext_buttons
|= ((buf
[4] & 0x01)) ? 0x01 : 0;
726 hw
->x
= (((buf
[1] & 0x1f) << 8) | buf
[2]);
727 hw
->y
= (((buf
[4] & 0x1f) << 8) | buf
[5]);
729 hw
->z
= (((buf
[0] & 0x30) << 2) | (buf
[3] & 0x3F));
730 hw
->w
= (((buf
[1] & 0x80) >> 4) | ((buf
[0] & 0x04) >> 1));
732 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
733 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
737 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
738 * is used by some firmware to indicate a finger at the edge of
739 * the touchpad whose precise position cannot be determined, so
740 * convert these values to the maximum axis value.
742 if (hw
->x
> X_MAX_POSITIVE
)
743 hw
->x
-= 1 << ABS_POS_BITS
;
744 else if (hw
->x
== X_MAX_POSITIVE
)
747 if (hw
->y
> Y_MAX_POSITIVE
)
748 hw
->y
-= 1 << ABS_POS_BITS
;
749 else if (hw
->y
== Y_MAX_POSITIVE
)
755 static void synaptics_report_semi_mt_slot(struct input_dev
*dev
, int slot
,
756 bool active
, int x
, int y
)
758 input_mt_slot(dev
, slot
);
759 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, active
);
761 input_report_abs(dev
, ABS_MT_POSITION_X
, x
);
762 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(y
));
766 static void synaptics_report_semi_mt_data(struct input_dev
*dev
,
767 const struct synaptics_hw_state
*a
,
768 const struct synaptics_hw_state
*b
,
771 if (num_fingers
>= 2) {
772 synaptics_report_semi_mt_slot(dev
, 0, true, min(a
->x
, b
->x
),
774 synaptics_report_semi_mt_slot(dev
, 1, true, max(a
->x
, b
->x
),
776 } else if (num_fingers
== 1) {
777 synaptics_report_semi_mt_slot(dev
, 0, true, a
->x
, a
->y
);
778 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
780 synaptics_report_semi_mt_slot(dev
, 0, false, 0, 0);
781 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
785 static void synaptics_report_buttons(struct psmouse
*psmouse
,
786 const struct synaptics_hw_state
*hw
)
788 struct input_dev
*dev
= psmouse
->dev
;
789 struct synaptics_data
*priv
= psmouse
->private;
792 input_report_key(dev
, BTN_LEFT
, hw
->left
);
793 input_report_key(dev
, BTN_RIGHT
, hw
->right
);
795 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
796 input_report_key(dev
, BTN_MIDDLE
, hw
->middle
);
798 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
799 input_report_key(dev
, BTN_FORWARD
, hw
->up
);
800 input_report_key(dev
, BTN_BACK
, hw
->down
);
803 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
804 input_report_key(dev
, BTN_0
+ i
, hw
->ext_buttons
& (1 << i
));
807 static void synaptics_report_slot(struct input_dev
*dev
, int slot
,
808 const struct synaptics_hw_state
*hw
)
810 input_mt_slot(dev
, slot
);
811 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, (hw
!= NULL
));
815 input_report_abs(dev
, ABS_MT_POSITION_X
, hw
->x
);
816 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(hw
->y
));
817 input_report_abs(dev
, ABS_MT_PRESSURE
, hw
->z
);
820 static void synaptics_report_mt_data(struct psmouse
*psmouse
,
821 struct synaptics_mt_state
*mt_state
,
822 const struct synaptics_hw_state
*sgm
)
824 struct input_dev
*dev
= psmouse
->dev
;
825 struct synaptics_data
*priv
= psmouse
->private;
826 struct synaptics_hw_state
*agm
= &priv
->agm
;
827 struct synaptics_mt_state
*old
= &priv
->mt_state
;
829 switch (mt_state
->count
) {
831 synaptics_report_slot(dev
, 0, NULL
);
832 synaptics_report_slot(dev
, 1, NULL
);
835 if (mt_state
->sgm
== -1) {
836 synaptics_report_slot(dev
, 0, NULL
);
837 synaptics_report_slot(dev
, 1, NULL
);
838 } else if (mt_state
->sgm
== 0) {
839 synaptics_report_slot(dev
, 0, sgm
);
840 synaptics_report_slot(dev
, 1, NULL
);
842 synaptics_report_slot(dev
, 0, NULL
);
843 synaptics_report_slot(dev
, 1, sgm
);
848 * If the finger slot contained in SGM is valid, and either
849 * hasn't changed, or is new, or the old SGM has now moved to
850 * AGM, then report SGM in MTB slot 0.
851 * Otherwise, empty MTB slot 0.
853 if (mt_state
->sgm
!= -1 &&
854 (mt_state
->sgm
== old
->sgm
||
855 old
->sgm
== -1 || mt_state
->agm
== old
->sgm
))
856 synaptics_report_slot(dev
, 0, sgm
);
858 synaptics_report_slot(dev
, 0, NULL
);
861 * If the finger slot contained in AGM is valid, and either
862 * hasn't changed, or is new, then report AGM in MTB slot 1.
863 * Otherwise, empty MTB slot 1.
865 * However, in the case where the AGM is new, make sure that
866 * that it is either the same as the old SGM, or there was no
869 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
870 * the new AGM will keep the old SGM's tracking ID, which can
871 * cause apparent drumroll. This happens if in the following
872 * valid finger sequence:
874 * Action SGM AGM (MTB slot:Contact)
875 * 1. Touch contact 0 (0:0)
876 * 2. Touch contact 1 (0:0, 1:1)
877 * 3. Lift contact 0 (1:1)
878 * 4. Touch contacts 2,3 (0:2, 1:3)
880 * In step 4, contact 3, in AGM must not be given the same
881 * tracking ID as contact 1 had in step 3. To avoid this,
882 * the first agm with contact 3 is dropped and slot 1 is
883 * invalidated (tracking ID = -1).
885 if (mt_state
->agm
!= -1 &&
886 (mt_state
->agm
== old
->agm
||
888 (old
->sgm
== -1 || mt_state
->agm
== old
->sgm
))))
889 synaptics_report_slot(dev
, 1, agm
);
891 synaptics_report_slot(dev
, 1, NULL
);
895 /* Don't use active slot count to generate BTN_TOOL events. */
896 input_mt_report_pointer_emulation(dev
, false);
898 /* Send the number of fingers reported by touchpad itself. */
899 input_mt_report_finger_count(dev
, mt_state
->count
);
901 synaptics_report_buttons(psmouse
, sgm
);
906 /* Handle case where mt_state->count = 0 */
907 static void synaptics_image_sensor_0f(struct synaptics_data
*priv
,
908 struct synaptics_mt_state
*mt_state
)
910 synaptics_mt_state_set(mt_state
, 0, -1, -1);
911 priv
->mt_state_lost
= false;
914 /* Handle case where mt_state->count = 1 */
915 static void synaptics_image_sensor_1f(struct synaptics_data
*priv
,
916 struct synaptics_mt_state
*mt_state
)
918 struct synaptics_hw_state
*agm
= &priv
->agm
;
919 struct synaptics_mt_state
*old
= &priv
->mt_state
;
922 * If the last AGM was (0,0,0), and there is only one finger left,
923 * then we absolutely know that SGM contains slot 0, and all other
924 * fingers have been removed.
926 if (priv
->agm_pending
&& agm
->z
== 0) {
927 synaptics_mt_state_set(mt_state
, 1, 0, -1);
928 priv
->mt_state_lost
= false;
932 switch (old
->count
) {
934 synaptics_mt_state_set(mt_state
, 1, 0, -1);
938 * If mt_state_lost, then the previous transition was 3->1,
939 * and SGM now contains either slot 0 or 1, but we don't know
940 * which. So, we just assume that the SGM now contains slot 1.
942 * If pending AGM and either:
943 * (a) the previous SGM slot contains slot 0, or
944 * (b) there was no SGM slot
945 * then, the SGM now contains slot 1
947 * Case (a) happens with very rapid "drum roll" gestures, where
948 * slot 0 finger is lifted and a new slot 1 finger touches
949 * within one reporting interval.
951 * Case (b) happens if initially two or more fingers tap
952 * briefly, and all but one lift before the end of the first
953 * reporting interval.
955 * (In both these cases, slot 0 will becomes empty, so SGM
956 * contains slot 1 with the new finger)
958 * Else, if there was no previous SGM, it now contains slot 0.
960 * Otherwise, SGM still contains the same slot.
962 if (priv
->mt_state_lost
||
963 (priv
->agm_pending
&& old
->sgm
<= 0))
964 synaptics_mt_state_set(mt_state
, 1, 1, -1);
965 else if (old
->sgm
== -1)
966 synaptics_mt_state_set(mt_state
, 1, 0, -1);
970 * If mt_state_lost, we don't know which finger SGM contains.
972 * So, report 1 finger, but with both slots empty.
973 * We will use slot 1 on subsequent 1->1
975 if (priv
->mt_state_lost
) {
976 synaptics_mt_state_set(mt_state
, 1, -1, -1);
980 * Since the last AGM was NOT (0,0,0), it was the finger in
981 * slot 0 that has been removed.
982 * So, SGM now contains previous AGM's slot, and AGM is now
985 synaptics_mt_state_set(mt_state
, 1, old
->agm
, -1);
989 * Since last AGM was not (0,0,0), we don't know which finger
992 * So, report 1 finger, but with both slots empty.
993 * We will use slot 1 on subsequent 1->1
995 synaptics_mt_state_set(mt_state
, 1, -1, -1);
996 priv
->mt_state_lost
= true;
1000 /* mt_state was updated by AGM-CONTACT packet */
1005 /* Handle case where mt_state->count = 2 */
1006 static void synaptics_image_sensor_2f(struct synaptics_data
*priv
,
1007 struct synaptics_mt_state
*mt_state
)
1009 struct synaptics_mt_state
*old
= &priv
->mt_state
;
1011 switch (old
->count
) {
1013 synaptics_mt_state_set(mt_state
, 2, 0, 1);
1017 * If previous SGM contained slot 1 or higher, SGM now contains
1018 * slot 0 (the newly touching finger) and AGM contains SGM's
1021 * Otherwise, SGM still contains slot 0 and AGM now contains
1025 synaptics_mt_state_set(mt_state
, 2, 0, old
->sgm
);
1027 synaptics_mt_state_set(mt_state
, 2, 0, 1);
1031 * If mt_state_lost, SGM now contains either finger 1 or 2, but
1032 * we don't know which.
1033 * So, we just assume that the SGM contains slot 0 and AGM 1.
1035 if (priv
->mt_state_lost
)
1036 synaptics_mt_state_set(mt_state
, 2, 0, 1);
1038 * Otherwise, use the same mt_state, since it either hasn't
1039 * changed, or was updated by a recently received AGM-CONTACT
1045 * 3->2 transitions have two unsolvable problems:
1046 * 1) no indication is given which finger was removed
1047 * 2) no way to tell if agm packet was for finger 3
1048 * before 3->2, or finger 2 after 3->2.
1050 * So, report 2 fingers, but empty all slots.
1051 * We will guess slots [0,1] on subsequent 2->2.
1053 synaptics_mt_state_set(mt_state
, 2, -1, -1);
1054 priv
->mt_state_lost
= true;
1058 /* mt_state was updated by AGM-CONTACT packet */
1063 /* Handle case where mt_state->count = 3 */
1064 static void synaptics_image_sensor_3f(struct synaptics_data
*priv
,
1065 struct synaptics_mt_state
*mt_state
)
1067 struct synaptics_mt_state
*old
= &priv
->mt_state
;
1069 switch (old
->count
) {
1071 synaptics_mt_state_set(mt_state
, 3, 0, 2);
1075 * If previous SGM contained slot 2 or higher, SGM now contains
1076 * slot 0 (one of the newly touching fingers) and AGM contains
1077 * SGM's previous slot.
1079 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1082 synaptics_mt_state_set(mt_state
, 3, 0, old
->sgm
);
1084 synaptics_mt_state_set(mt_state
, 3, 0, 2);
1088 * If the AGM previously contained slot 3 or higher, then the
1089 * newly touching finger is in the lowest available slot.
1091 * If SGM was previously 1 or higher, then the new SGM is
1092 * now slot 0 (with a new finger), otherwise, the new finger
1093 * is now in a hidden slot between 0 and AGM's slot.
1095 * In all such cases, the SGM now contains slot 0, and the AGM
1096 * continues to contain the same slot as before.
1098 if (old
->agm
>= 3) {
1099 synaptics_mt_state_set(mt_state
, 3, 0, old
->agm
);
1104 * After some 3->1 and all 3->2 transitions, we lose track
1105 * of which slot is reported by SGM and AGM.
1107 * For 2->3 in this state, report 3 fingers, but empty all
1108 * slots, and we will guess (0,2) on a subsequent 0->3.
1110 * To userspace, the resulting transition will look like:
1111 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1113 if (priv
->mt_state_lost
) {
1114 synaptics_mt_state_set(mt_state
, 3, -1, -1);
1119 * If the (SGM,AGM) really previously contained slots (0, 1),
1120 * then we cannot know what slot was just reported by the AGM,
1121 * because the 2->3 transition can occur either before or after
1122 * the AGM packet. Thus, this most recent AGM could contain
1123 * either the same old slot 1 or the new slot 2.
1124 * Subsequent AGMs will be reporting slot 2.
1126 * To userspace, the resulting transition will look like:
1127 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1129 synaptics_mt_state_set(mt_state
, 3, 0, -1);
1133 * If, for whatever reason, the previous agm was invalid,
1134 * Assume SGM now contains slot 0, AGM now contains slot 2.
1137 synaptics_mt_state_set(mt_state
, 3, 0, 2);
1139 * mt_state either hasn't changed, or was updated by a recently
1140 * received AGM-CONTACT packet.
1146 /* mt_state was updated by AGM-CONTACT packet */
1151 /* Handle case where mt_state->count = 4, or = 5 */
1152 static void synaptics_image_sensor_45f(struct synaptics_data
*priv
,
1153 struct synaptics_mt_state
*mt_state
)
1155 /* mt_state was updated correctly by AGM-CONTACT packet */
1156 priv
->mt_state_lost
= false;
1159 static void synaptics_image_sensor_process(struct psmouse
*psmouse
,
1160 struct synaptics_hw_state
*sgm
)
1162 struct synaptics_data
*priv
= psmouse
->private;
1163 struct synaptics_hw_state
*agm
= &priv
->agm
;
1164 struct synaptics_mt_state mt_state
;
1166 /* Initialize using current mt_state (as updated by last agm) */
1167 mt_state
= agm
->mt_state
;
1170 * Update mt_state using the new finger count and current mt_state.
1173 synaptics_image_sensor_0f(priv
, &mt_state
);
1174 else if (sgm
->w
>= 4)
1175 synaptics_image_sensor_1f(priv
, &mt_state
);
1176 else if (sgm
->w
== 0)
1177 synaptics_image_sensor_2f(priv
, &mt_state
);
1178 else if (sgm
->w
== 1 && mt_state
.count
<= 3)
1179 synaptics_image_sensor_3f(priv
, &mt_state
);
1181 synaptics_image_sensor_45f(priv
, &mt_state
);
1183 /* Send resulting input events to user space */
1184 synaptics_report_mt_data(psmouse
, &mt_state
, sgm
);
1186 /* Store updated mt_state */
1187 priv
->mt_state
= agm
->mt_state
= mt_state
;
1188 priv
->agm_pending
= false;
1191 static void synaptics_profile_sensor_process(struct psmouse
*psmouse
,
1192 struct synaptics_hw_state
*sgm
,
1195 struct input_dev
*dev
= psmouse
->dev
;
1196 struct synaptics_data
*priv
= psmouse
->private;
1197 struct synaptics_hw_state
*hw
[2] = { sgm
, &priv
->agm
};
1198 struct input_mt_pos pos
[2];
1199 int slot
[2], nsemi
, i
;
1201 nsemi
= clamp_val(num_fingers
, 0, 2);
1203 for (i
= 0; i
< nsemi
; i
++) {
1204 pos
[i
].x
= hw
[i
]->x
;
1205 pos
[i
].y
= synaptics_invert_y(hw
[i
]->y
);
1208 input_mt_assign_slots(dev
, slot
, pos
, nsemi
);
1210 for (i
= 0; i
< nsemi
; i
++) {
1211 input_mt_slot(dev
, slot
[i
]);
1212 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, true);
1213 input_report_abs(dev
, ABS_MT_POSITION_X
, pos
[i
].x
);
1214 input_report_abs(dev
, ABS_MT_POSITION_Y
, pos
[i
].y
);
1215 input_report_abs(dev
, ABS_MT_PRESSURE
, hw
[i
]->z
);
1218 input_mt_drop_unused(dev
);
1219 input_mt_report_pointer_emulation(dev
, false);
1220 input_mt_report_finger_count(dev
, num_fingers
);
1222 synaptics_report_buttons(psmouse
, sgm
);
1228 * called for each full received packet from the touchpad
1230 static void synaptics_process_packet(struct psmouse
*psmouse
)
1232 struct input_dev
*dev
= psmouse
->dev
;
1233 struct synaptics_data
*priv
= psmouse
->private;
1234 struct synaptics_hw_state hw
;
1238 if (synaptics_parse_hw_state(psmouse
->packet
, priv
, &hw
))
1241 if (SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) {
1242 synaptics_image_sensor_process(psmouse
, &hw
);
1247 priv
->scroll
+= hw
.scroll
;
1249 while (priv
->scroll
>= 4) {
1250 input_report_key(dev
, BTN_BACK
, !hw
.down
);
1252 input_report_key(dev
, BTN_BACK
, hw
.down
);
1256 while (priv
->scroll
<= -4) {
1257 input_report_key(dev
, BTN_FORWARD
, !hw
.up
);
1259 input_report_key(dev
, BTN_FORWARD
, hw
.up
);
1266 if (hw
.z
> 0 && hw
.x
> 1) {
1269 if (SYN_CAP_EXTENDED(priv
->capabilities
)) {
1272 if (SYN_CAP_MULTIFINGER(priv
->capabilities
))
1273 num_fingers
= hw
.w
+ 2;
1276 if (SYN_MODEL_PEN(priv
->model_id
))
1277 ; /* Nothing, treat a pen as a single finger */
1280 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1281 finger_width
= hw
.w
;
1290 if (cr48_profile_sensor
) {
1291 synaptics_profile_sensor_process(psmouse
, &hw
, num_fingers
);
1295 if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
))
1296 synaptics_report_semi_mt_data(dev
, &hw
, &priv
->agm
,
1300 * BTN_TOUCH has to be first as mousedev relies on it when doing
1301 * absolute -> relative conversion
1303 if (hw
.z
> 30) input_report_key(dev
, BTN_TOUCH
, 1);
1304 if (hw
.z
< 25) input_report_key(dev
, BTN_TOUCH
, 0);
1306 if (num_fingers
> 0) {
1307 input_report_abs(dev
, ABS_X
, hw
.x
);
1308 input_report_abs(dev
, ABS_Y
, synaptics_invert_y(hw
.y
));
1310 input_report_abs(dev
, ABS_PRESSURE
, hw
.z
);
1312 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1313 input_report_abs(dev
, ABS_TOOL_WIDTH
, finger_width
);
1315 input_report_key(dev
, BTN_TOOL_FINGER
, num_fingers
== 1);
1316 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
1317 input_report_key(dev
, BTN_TOOL_DOUBLETAP
, num_fingers
== 2);
1318 input_report_key(dev
, BTN_TOOL_TRIPLETAP
, num_fingers
== 3);
1321 synaptics_report_buttons(psmouse
, &hw
);
1326 static int synaptics_validate_byte(struct psmouse
*psmouse
,
1327 int idx
, unsigned char pkt_type
)
1329 static const unsigned char newabs_mask
[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1330 static const unsigned char newabs_rel_mask
[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1331 static const unsigned char newabs_rslt
[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1332 static const unsigned char oldabs_mask
[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1333 static const unsigned char oldabs_rslt
[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1334 const char *packet
= psmouse
->packet
;
1336 if (idx
< 0 || idx
> 4)
1342 case SYN_NEWABS_RELAXED
:
1343 return (packet
[idx
] & newabs_rel_mask
[idx
]) == newabs_rslt
[idx
];
1345 case SYN_NEWABS_STRICT
:
1346 return (packet
[idx
] & newabs_mask
[idx
]) == newabs_rslt
[idx
];
1349 return (packet
[idx
] & oldabs_mask
[idx
]) == oldabs_rslt
[idx
];
1352 psmouse_err(psmouse
, "unknown packet type %d\n", pkt_type
);
1357 static unsigned char synaptics_detect_pkt_type(struct psmouse
*psmouse
)
1361 for (i
= 0; i
< 5; i
++)
1362 if (!synaptics_validate_byte(psmouse
, i
, SYN_NEWABS_STRICT
)) {
1363 psmouse_info(psmouse
, "using relaxed packet validation\n");
1364 return SYN_NEWABS_RELAXED
;
1367 return SYN_NEWABS_STRICT
;
1370 static psmouse_ret_t
synaptics_process_byte(struct psmouse
*psmouse
)
1372 struct synaptics_data
*priv
= psmouse
->private;
1374 if (psmouse
->pktcnt
>= 6) { /* Full packet received */
1375 if (unlikely(priv
->pkt_type
== SYN_NEWABS
))
1376 priv
->pkt_type
= synaptics_detect_pkt_type(psmouse
);
1378 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
) &&
1379 synaptics_is_pt_packet(psmouse
->packet
)) {
1381 synaptics_pass_pt_packet(priv
->pt_port
, psmouse
->packet
);
1383 synaptics_process_packet(psmouse
);
1385 return PSMOUSE_FULL_PACKET
;
1388 return synaptics_validate_byte(psmouse
, psmouse
->pktcnt
- 1, priv
->pkt_type
) ?
1389 PSMOUSE_GOOD_DATA
: PSMOUSE_BAD_DATA
;
1392 /*****************************************************************************
1393 * Driver initialization/cleanup functions
1394 ****************************************************************************/
1395 static void set_abs_position_params(struct input_dev
*dev
,
1396 struct synaptics_data
*priv
, int x_code
,
1399 int x_min
= priv
->x_min
?: XMIN_NOMINAL
;
1400 int x_max
= priv
->x_max
?: XMAX_NOMINAL
;
1401 int y_min
= priv
->y_min
?: YMIN_NOMINAL
;
1402 int y_max
= priv
->y_max
?: YMAX_NOMINAL
;
1403 int fuzz
= SYN_CAP_REDUCED_FILTERING(priv
->ext_cap_0c
) ?
1404 SYN_REDUCED_FILTER_FUZZ
: 0;
1406 input_set_abs_params(dev
, x_code
, x_min
, x_max
, fuzz
, 0);
1407 input_set_abs_params(dev
, y_code
, y_min
, y_max
, fuzz
, 0);
1408 input_abs_set_res(dev
, x_code
, priv
->x_res
);
1409 input_abs_set_res(dev
, y_code
, priv
->y_res
);
1412 static void set_input_params(struct psmouse
*psmouse
,
1413 struct synaptics_data
*priv
)
1415 struct input_dev
*dev
= psmouse
->dev
;
1418 /* Things that apply to both modes */
1419 __set_bit(INPUT_PROP_POINTER
, dev
->propbit
);
1420 __set_bit(EV_KEY
, dev
->evbit
);
1421 __set_bit(BTN_LEFT
, dev
->keybit
);
1422 __set_bit(BTN_RIGHT
, dev
->keybit
);
1424 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
1425 __set_bit(BTN_MIDDLE
, dev
->keybit
);
1427 if (!priv
->absolute_mode
) {
1429 __set_bit(EV_REL
, dev
->evbit
);
1430 __set_bit(REL_X
, dev
->relbit
);
1431 __set_bit(REL_Y
, dev
->relbit
);
1436 __set_bit(EV_ABS
, dev
->evbit
);
1437 set_abs_position_params(dev
, priv
, ABS_X
, ABS_Y
);
1438 input_set_abs_params(dev
, ABS_PRESSURE
, 0, 255, 0, 0);
1440 if (cr48_profile_sensor
)
1441 input_set_abs_params(dev
, ABS_MT_PRESSURE
, 0, 255, 0, 0);
1443 if (SYN_CAP_IMAGE_SENSOR(priv
->ext_cap_0c
)) {
1444 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
1446 /* Image sensors can report per-contact pressure */
1447 input_set_abs_params(dev
, ABS_MT_PRESSURE
, 0, 255, 0, 0);
1448 input_mt_init_slots(dev
, 2, INPUT_MT_POINTER
);
1450 /* Image sensors can signal 4 and 5 finger clicks */
1451 __set_bit(BTN_TOOL_QUADTAP
, dev
->keybit
);
1452 __set_bit(BTN_TOOL_QUINTTAP
, dev
->keybit
);
1453 } else if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
)) {
1454 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
1457 * Profile sensor in CR-48 tracks contacts reasonably well,
1458 * other non-image sensors with AGM use semi-mt.
1460 input_mt_init_slots(dev
, 2,
1462 (cr48_profile_sensor
?
1463 INPUT_MT_TRACK
: INPUT_MT_SEMI_MT
));
1466 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
1467 input_set_abs_params(dev
, ABS_TOOL_WIDTH
, 0, 15, 0, 0);
1469 __set_bit(BTN_TOUCH
, dev
->keybit
);
1470 __set_bit(BTN_TOOL_FINGER
, dev
->keybit
);
1472 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
1473 __set_bit(BTN_TOOL_DOUBLETAP
, dev
->keybit
);
1474 __set_bit(BTN_TOOL_TRIPLETAP
, dev
->keybit
);
1477 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
) ||
1478 SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
1479 __set_bit(BTN_FORWARD
, dev
->keybit
);
1480 __set_bit(BTN_BACK
, dev
->keybit
);
1483 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
1484 __set_bit(BTN_0
+ i
, dev
->keybit
);
1486 __clear_bit(EV_REL
, dev
->evbit
);
1487 __clear_bit(REL_X
, dev
->relbit
);
1488 __clear_bit(REL_Y
, dev
->relbit
);
1490 if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
1491 __set_bit(INPUT_PROP_BUTTONPAD
, dev
->propbit
);
1492 if (psmouse_matches_pnp_id(psmouse
, topbuttonpad_pnp_ids
))
1493 __set_bit(INPUT_PROP_TOPBUTTONPAD
, dev
->propbit
);
1494 /* Clickpads report only left button */
1495 __clear_bit(BTN_RIGHT
, dev
->keybit
);
1496 __clear_bit(BTN_MIDDLE
, dev
->keybit
);
1500 static ssize_t
synaptics_show_disable_gesture(struct psmouse
*psmouse
,
1501 void *data
, char *buf
)
1503 struct synaptics_data
*priv
= psmouse
->private;
1505 return sprintf(buf
, "%c\n", priv
->disable_gesture
? '1' : '0');
1508 static ssize_t
synaptics_set_disable_gesture(struct psmouse
*psmouse
,
1509 void *data
, const char *buf
,
1512 struct synaptics_data
*priv
= psmouse
->private;
1516 err
= kstrtouint(buf
, 10, &value
);
1523 if (value
== priv
->disable_gesture
)
1526 priv
->disable_gesture
= value
;
1528 priv
->mode
|= SYN_BIT_DISABLE_GESTURE
;
1530 priv
->mode
&= ~SYN_BIT_DISABLE_GESTURE
;
1532 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
1538 PSMOUSE_DEFINE_ATTR(disable_gesture
, S_IWUSR
| S_IRUGO
, NULL
,
1539 synaptics_show_disable_gesture
,
1540 synaptics_set_disable_gesture
);
1542 static void synaptics_disconnect(struct psmouse
*psmouse
)
1544 struct synaptics_data
*priv
= psmouse
->private;
1546 if (!priv
->absolute_mode
&& SYN_ID_DISGEST_SUPPORTED(priv
->identity
))
1547 device_remove_file(&psmouse
->ps2dev
.serio
->dev
,
1548 &psmouse_attr_disable_gesture
.dattr
);
1550 synaptics_reset(psmouse
);
1552 psmouse
->private = NULL
;
1555 static int synaptics_reconnect(struct psmouse
*psmouse
)
1557 struct synaptics_data
*priv
= psmouse
->private;
1558 struct synaptics_data old_priv
= *priv
;
1559 unsigned char param
[2];
1564 psmouse_reset(psmouse
);
1567 * On some boxes, right after resuming, the touchpad
1568 * needs some time to finish initializing (I assume
1569 * it needs time to calibrate) and start responding
1570 * to Synaptics-specific queries, so let's wait a
1575 ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETID
);
1576 error
= synaptics_detect(psmouse
, 0);
1577 } while (error
&& ++retry
< 3);
1583 psmouse_dbg(psmouse
, "reconnected after %d tries\n", retry
);
1585 if (synaptics_query_hardware(psmouse
)) {
1586 psmouse_err(psmouse
, "Unable to query device.\n");
1590 if (synaptics_set_mode(psmouse
)) {
1591 psmouse_err(psmouse
, "Unable to initialize device.\n");
1595 if (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
) {
1599 psmouse_err(psmouse
,
1600 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1601 old_priv
.identity
, priv
->identity
,
1602 old_priv
.model_id
, priv
->model_id
,
1603 old_priv
.capabilities
, priv
->capabilities
,
1604 old_priv
.ext_cap
, priv
->ext_cap
);
1611 static bool impaired_toshiba_kbc
;
1613 static const struct dmi_system_id toshiba_dmi_table
[] __initconst
= {
1614 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1616 /* Toshiba Satellite */
1618 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1619 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite"),
1623 /* Toshiba Dynabook */
1625 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1626 DMI_MATCH(DMI_PRODUCT_NAME
, "dynabook"),
1630 /* Toshiba Portege M300 */
1632 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1633 DMI_MATCH(DMI_PRODUCT_NAME
, "PORTEGE M300"),
1638 /* Toshiba Portege M300 */
1640 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1641 DMI_MATCH(DMI_PRODUCT_NAME
, "Portable PC"),
1642 DMI_MATCH(DMI_PRODUCT_VERSION
, "Version 1.0"),
1650 static bool broken_olpc_ec
;
1652 static const struct dmi_system_id olpc_dmi_table
[] __initconst
= {
1653 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1655 /* OLPC XO-1 or XO-1.5 */
1657 DMI_MATCH(DMI_SYS_VENDOR
, "OLPC"),
1658 DMI_MATCH(DMI_PRODUCT_NAME
, "XO"),
1665 static const struct dmi_system_id __initconst cr48_dmi_table
[] = {
1666 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1668 /* Cr-48 Chromebook (Codename Mario) */
1670 DMI_MATCH(DMI_SYS_VENDOR
, "IEC"),
1671 DMI_MATCH(DMI_PRODUCT_NAME
, "Mario"),
1678 static const struct dmi_system_id forcepad_dmi_table
[] __initconst
= {
1679 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1682 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1683 DMI_MATCH(DMI_PRODUCT_NAME
, "HP EliteBook Folio 1040 G1"),
1690 void __init
synaptics_module_init(void)
1692 impaired_toshiba_kbc
= dmi_check_system(toshiba_dmi_table
);
1693 broken_olpc_ec
= dmi_check_system(olpc_dmi_table
);
1694 cr48_profile_sensor
= dmi_check_system(cr48_dmi_table
);
1697 * Unfortunately ForcePad capability is not exported over PS/2,
1698 * so we have to resort to checking DMI.
1700 is_forcepad
= dmi_check_system(forcepad_dmi_table
);
1703 static int __synaptics_init(struct psmouse
*psmouse
, bool absolute_mode
)
1705 struct synaptics_data
*priv
;
1709 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1710 * packet spew overloads the EC such that key presses on the keyboard
1711 * are missed. Given that, don't even attempt to use Absolute mode.
1712 * Relative mode seems to work just fine.
1714 if (absolute_mode
&& broken_olpc_ec
) {
1715 psmouse_info(psmouse
,
1716 "OLPC XO detected, not enabling Synaptics protocol.\n");
1720 psmouse
->private = priv
= kzalloc(sizeof(struct synaptics_data
), GFP_KERNEL
);
1724 psmouse_reset(psmouse
);
1726 if (synaptics_query_hardware(psmouse
)) {
1727 psmouse_err(psmouse
, "Unable to query device.\n");
1731 priv
->absolute_mode
= absolute_mode
;
1732 if (SYN_ID_DISGEST_SUPPORTED(priv
->identity
))
1733 priv
->disable_gesture
= true;
1735 if (synaptics_set_mode(psmouse
)) {
1736 psmouse_err(psmouse
, "Unable to initialize device.\n");
1740 priv
->pkt_type
= SYN_MODEL_NEWABS(priv
->model_id
) ? SYN_NEWABS
: SYN_OLDABS
;
1742 psmouse_info(psmouse
,
1743 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1744 SYN_ID_MODEL(priv
->identity
),
1745 SYN_ID_MAJOR(priv
->identity
), SYN_ID_MINOR(priv
->identity
),
1747 priv
->capabilities
, priv
->ext_cap
, priv
->ext_cap_0c
,
1748 priv
->board_id
, priv
->firmware_id
);
1750 set_input_params(psmouse
, priv
);
1753 * Encode touchpad model so that it can be used to set
1754 * input device->id.version and be visible to userspace.
1755 * Because version is __u16 we have to drop something.
1756 * Hardware info bits seem to be good candidates as they
1757 * are documented to be for Synaptics corp. internal use.
1759 psmouse
->model
= ((priv
->model_id
& 0x00ff0000) >> 8) |
1760 (priv
->model_id
& 0x000000ff);
1762 if (absolute_mode
) {
1763 psmouse
->protocol_handler
= synaptics_process_byte
;
1764 psmouse
->pktsize
= 6;
1766 /* Relative mode follows standard PS/2 mouse protocol */
1767 psmouse
->protocol_handler
= psmouse_process_byte
;
1768 psmouse
->pktsize
= 3;
1771 psmouse
->set_rate
= synaptics_set_rate
;
1772 psmouse
->disconnect
= synaptics_disconnect
;
1773 psmouse
->reconnect
= synaptics_reconnect
;
1774 psmouse
->cleanup
= synaptics_reset
;
1775 /* Synaptics can usually stay in sync without extra help */
1776 psmouse
->resync_time
= 0;
1778 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
))
1779 synaptics_pt_create(psmouse
);
1782 * Toshiba's KBC seems to have trouble handling data from
1783 * Synaptics at full rate. Switch to a lower rate (roughly
1784 * the same rate as a standard PS/2 mouse).
1786 if (psmouse
->rate
>= 80 && impaired_toshiba_kbc
) {
1787 psmouse_info(psmouse
,
1788 "Toshiba %s detected, limiting rate to 40pps.\n",
1789 dmi_get_system_info(DMI_PRODUCT_NAME
));
1793 if (!priv
->absolute_mode
&& SYN_ID_DISGEST_SUPPORTED(priv
->identity
)) {
1794 err
= device_create_file(&psmouse
->ps2dev
.serio
->dev
,
1795 &psmouse_attr_disable_gesture
.dattr
);
1797 psmouse_err(psmouse
,
1798 "Failed to create disable_gesture attribute (%d)",
1811 int synaptics_init(struct psmouse
*psmouse
)
1813 return __synaptics_init(psmouse
, true);
1816 int synaptics_init_relative(struct psmouse
*psmouse
)
1818 return __synaptics_init(psmouse
, false);
1821 bool synaptics_supported(void)
1826 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1828 void __init
synaptics_module_init(void)
1832 int synaptics_init(struct psmouse
*psmouse
)
1837 bool synaptics_supported(void)
1842 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */