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", "LEN0039",
139 "LEN2002", "LEN2004", NULL},
140 1024, 5112, 2024, 4832
143 (const char * const []){"LEN2001", NULL},
144 1024, 5022, 2508, 4832
147 (const char * const []){"LEN2006", NULL},
148 1264, 5675, 1171, 4688
153 /* This list has been kindly provided by Synaptics. */
154 static const char * const topbuttonpad_pnp_ids[] = {
164 "LEN0033", /* Helix */
165 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
166 "LEN0035", /* X240 */
167 "LEN0036", /* T440 */
170 "LEN0039", /* T440s */
172 "LEN0042", /* Yoga */
179 "LEN2001", /* Edge E431 */
180 "LEN2002", /* Edge E531 */
182 "LEN2004", /* L440 */
193 /*****************************************************************************
194 * Synaptics communications functions
195 ****************************************************************************/
198 * Synaptics touchpads report the y coordinate from bottom to top, which is
199 * opposite from what userspace expects.
200 * This function is used to invert y before reporting.
202 static int synaptics_invert_y(int y)
204 return YMAX_NOMINAL + YMIN_NOMINAL - y;
208 * Send a command to the synpatics touchpad by special commands
210 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
212 if (psmouse_sliced_command(psmouse, c))
214 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
220 * Read the model-id bytes from the touchpad
221 * see also SYN_MODEL_* macros
223 static int synaptics_model_id(struct psmouse *psmouse)
225 struct synaptics_data *priv = psmouse->private;
228 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
230 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
235 * Read the board id from the touchpad
236 * The board id is encoded in the "QUERY MODES" response
238 static int synaptics_board_id(struct psmouse *psmouse)
240 struct synaptics_data *priv = psmouse->private;
241 unsigned char bid[3];
243 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
245 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
250 * Read the firmware id from the touchpad
252 static int synaptics_firmware_id(struct psmouse *psmouse)
254 struct synaptics_data *priv = psmouse->private;
255 unsigned char fwid[3];
257 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
259 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
264 * Read the capability-bits from the touchpad
265 * see also the SYN_CAP_* macros
267 static int synaptics_capability(struct psmouse *psmouse)
269 struct synaptics_data *priv = psmouse->private;
270 unsigned char cap[3];
272 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
274 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
275 priv->ext_cap = priv->ext_cap_0c = 0;
278 * Older firmwares had submodel ID fixed to 0x47
280 if (SYN_ID_FULL(priv->identity) < 0x705 &&
281 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
286 * Unless capExtended is set the rest of the flags should be ignored
288 if (!SYN_CAP_EXTENDED(priv->capabilities))
289 priv->capabilities = 0;
291 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
292 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
293 psmouse_warn(psmouse,
294 "device claims to have extended capabilities, but I'm not able to read them.\n");
296 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
299 * if nExtBtn is greater than 8 it should be considered
300 * invalid and treated as 0
302 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
303 priv->ext_cap &= 0xff0fff;
307 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
308 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
309 psmouse_warn(psmouse,
310 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
312 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
321 * See also the SYN_ID_* macros
323 static int synaptics_identify(struct psmouse *psmouse)
325 struct synaptics_data *priv = psmouse->private;
328 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
330 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
331 if (SYN_ID_IS_SYNAPTICS(priv->identity))
337 * Read touchpad resolution and maximum reported coordinates
338 * Resolution is left zero if touchpad does not support the query
341 static int synaptics_resolution(struct psmouse *psmouse)
343 struct synaptics_data *priv = psmouse->private;
344 unsigned char resp[3];
347 if (SYN_ID_MAJOR(priv->identity) < 4)
350 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
351 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
352 priv->x_res = resp[0]; /* x resolution in units/mm */
353 priv->y_res = resp[2]; /* y resolution in units/mm */
357 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
358 if (psmouse_matches_pnp_id(psmouse,
359 min_max_pnpid_table[i].pnp_ids)) {
360 priv->x_min = min_max_pnpid_table[i].x_min;
361 priv->x_max = min_max_pnpid_table[i].x_max;
362 priv->y_min = min_max_pnpid_table[i].y_min;
363 priv->y_max = min_max_pnpid_table[i].y_max;
368 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
369 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
370 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
371 psmouse_warn(psmouse,
372 "device claims to have max coordinates query, but I'm not able to read it.\n");
374 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
375 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
379 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
380 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
381 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
382 psmouse_warn(psmouse,
383 "device claims to have min coordinates query, but I'm not able to read it.\n");
385 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
386 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
393 static int synaptics_query_hardware(struct psmouse *psmouse)
395 if (synaptics_identify(psmouse))
397 if (synaptics_model_id(psmouse))
399 if (synaptics_firmware_id(psmouse))
401 if (synaptics_board_id(psmouse))
403 if (synaptics_capability(psmouse))
405 if (synaptics_resolution(psmouse))
411 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
413 static unsigned char param = 0xc8;
414 struct synaptics_data *priv = psmouse->private;
416 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
417 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
420 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
423 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
426 /* Advanced gesture mode also sends multi finger data */
427 priv->capabilities |= BIT(1);
432 static int synaptics_set_mode(struct psmouse *psmouse)
434 struct synaptics_data *priv = psmouse->private;
437 if (priv->absolute_mode)
438 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
439 if (priv->disable_gesture)
440 priv->mode |= SYN_BIT_DISABLE_GESTURE;
441 if (psmouse->rate >= 80)
442 priv->mode |= SYN_BIT_HIGH_RATE;
443 if (SYN_CAP_EXTENDED(priv->capabilities))
444 priv->mode |= SYN_BIT_W_MODE;
446 if (synaptics_mode_cmd(psmouse, priv->mode))
449 if (priv->absolute_mode &&
450 synaptics_set_advanced_gesture_mode(psmouse)) {
451 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
458 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
460 struct synaptics_data *priv = psmouse->private;
463 priv->mode |= SYN_BIT_HIGH_RATE;
466 priv->mode &= ~SYN_BIT_HIGH_RATE;
470 synaptics_mode_cmd(psmouse, priv->mode);
473 /*****************************************************************************
474 * Synaptics pass-through PS/2 port support
475 ****************************************************************************/
476 static int synaptics_pt_write(struct serio *serio, unsigned char c)
478 struct psmouse *parent = serio_get_drvdata(serio->parent);
479 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
481 if (psmouse_sliced_command(parent, c))
483 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
488 static int synaptics_pt_start(struct serio *serio)
490 struct psmouse *parent = serio_get_drvdata(serio->parent);
491 struct synaptics_data *priv = parent->private;
493 serio_pause_rx(parent->ps2dev.serio);
494 priv->pt_port = serio;
495 serio_continue_rx(parent->ps2dev.serio);
500 static void synaptics_pt_stop(struct serio *serio)
502 struct psmouse *parent = serio_get_drvdata(serio->parent);
503 struct synaptics_data *priv = parent->private;
505 serio_pause_rx(parent->ps2dev.serio);
506 priv->pt_port = NULL;
507 serio_continue_rx(parent->ps2dev.serio);
510 static int synaptics_is_pt_packet(unsigned char *buf)
512 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
515 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
517 struct psmouse *child = serio_get_drvdata(ptport);
519 if (child && child->state == PSMOUSE_ACTIVATED) {
520 serio_interrupt(ptport, packet[1], 0);
521 serio_interrupt(ptport, packet[4], 0);
522 serio_interrupt(ptport, packet[5], 0);
523 if (child->pktsize == 4)
524 serio_interrupt(ptport, packet[2], 0);
526 serio_interrupt(ptport, packet[1], 0);
529 static void synaptics_pt_activate(struct psmouse *psmouse)
531 struct synaptics_data *priv = psmouse->private;
532 struct psmouse *child = serio_get_drvdata(priv->pt_port);
534 /* adjust the touchpad to child's choice of protocol */
536 if (child->pktsize == 4)
537 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
539 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
541 if (synaptics_mode_cmd(psmouse, priv->mode))
542 psmouse_warn(psmouse,
543 "failed to switch guest protocol\n");
547 static void synaptics_pt_create(struct psmouse *psmouse)
551 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
554 "not enough memory for pass-through port\n");
558 serio->id.type = SERIO_PS_PSTHRU;
559 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
560 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
561 serio->write = synaptics_pt_write;
562 serio->start = synaptics_pt_start;
563 serio->stop = synaptics_pt_stop;
564 serio->parent = psmouse->ps2dev.serio;
566 psmouse->pt_activate = synaptics_pt_activate;
568 psmouse_info(psmouse, "serio: %s port at %s\n",
569 serio->name, psmouse->phys);
570 serio_register_port(serio);
573 /*****************************************************************************
574 * Functions to interpret the absolute mode packets
575 ****************************************************************************/
577 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
580 state->count = count;
585 static void synaptics_parse_agm(const unsigned char buf[],
586 struct synaptics_data *priv,
587 struct synaptics_hw_state *hw)
589 struct synaptics_hw_state *agm = &priv->agm;
592 agm_packet_type = (buf[5] & 0x30) >> 4;
593 switch (agm_packet_type) {
595 /* Gesture packet: (x, y, z) half resolution */
597 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
598 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
599 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
603 /* AGM-CONTACT packet: (count, sgm, agm) */
604 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
611 /* Record that at least one AGM has been received since last SGM */
612 priv->agm_pending = true;
615 static bool is_forcepad;
617 static int synaptics_parse_hw_state(const unsigned char buf[],
618 struct synaptics_data *priv,
619 struct synaptics_hw_state *hw)
621 memset(hw, 0, sizeof(struct synaptics_hw_state));
623 if (SYN_MODEL_NEWABS(priv->model_id)) {
624 hw->w = (((buf[0] & 0x30) >> 2) |
625 ((buf[0] & 0x04) >> 1) |
626 ((buf[3] & 0x04) >> 2));
628 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
629 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
631 synaptics_parse_agm(buf, priv, hw);
635 hw->x = (((buf[3] & 0x10) << 8) |
636 ((buf[1] & 0x0f) << 8) |
638 hw->y = (((buf[3] & 0x20) << 7) |
639 ((buf[1] & 0xf0) << 4) |
643 hw->left = (buf[0] & 0x01) ? 1 : 0;
644 hw->right = (buf[0] & 0x02) ? 1 : 0;
648 * ForcePads, like Clickpads, use middle button
649 * bits to report primary button clicks.
650 * Unfortunately they report primary button not
651 * only when user presses on the pad above certain
652 * threshold, but also when there are more than one
653 * finger on the touchpad, which interferes with
654 * out multi-finger gestures.
658 priv->press = priv->report_press = false;
659 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
661 * Single-finger touch with pressure above
662 * the threshold. If pressure stays long
663 * enough, we'll start reporting primary
664 * button. We rely on the device continuing
665 * sending data even if finger does not
669 priv->press_start = jiffies;
671 } else if (time_after(jiffies,
673 msecs_to_jiffies(50))) {
674 priv->report_press = true;
680 hw->left = priv->report_press;
682 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
684 * Clickpad's button is transmitted as middle button,
685 * however, since it is primary button, we will report
688 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
690 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
691 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
693 hw->scroll = (signed char)(buf[1]);
696 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
697 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
698 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
701 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
702 ((buf[0] ^ buf[3]) & 0x02)) {
703 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
706 * if nExtBtn is greater than 8 it should be
707 * considered invalid and treated as 0
711 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
712 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
714 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
715 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
717 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
718 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
720 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
721 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
725 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
726 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
728 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
729 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
731 hw->left = (buf[0] & 0x01) ? 1 : 0;
732 hw->right = (buf[0] & 0x02) ? 1 : 0;
736 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
737 * is used by some firmware to indicate a finger at the edge of
738 * the touchpad whose precise position cannot be determined, so
739 * convert these values to the maximum axis value.
741 if (hw->x > X_MAX_POSITIVE)
742 hw->x -= 1 << ABS_POS_BITS;
743 else if (hw->x == X_MAX_POSITIVE)
746 if (hw->y > Y_MAX_POSITIVE)
747 hw->y -= 1 << ABS_POS_BITS;
748 else if (hw->y == Y_MAX_POSITIVE)
754 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
755 bool active, int x, int y)
757 input_mt_slot(dev, slot);
758 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
760 input_report_abs(dev, ABS_MT_POSITION_X, x);
761 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
765 static void synaptics_report_semi_mt_data(struct input_dev *dev,
766 const struct synaptics_hw_state *a,
767 const struct synaptics_hw_state *b,
770 if (num_fingers >= 2) {
771 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
773 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
775 } else if (num_fingers == 1) {
776 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
777 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
779 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
780 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
784 static void synaptics_report_buttons(struct psmouse *psmouse,
785 const struct synaptics_hw_state *hw)
787 struct input_dev *dev = psmouse->dev;
788 struct synaptics_data *priv = psmouse->private;
791 input_report_key(dev, BTN_LEFT, hw->left);
792 input_report_key(dev, BTN_RIGHT, hw->right);
794 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
795 input_report_key(dev, BTN_MIDDLE, hw->middle);
797 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
798 input_report_key(dev, BTN_FORWARD, hw->up);
799 input_report_key(dev, BTN_BACK, hw->down);
802 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
803 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
806 static void synaptics_report_slot(struct input_dev *dev, int slot,
807 const struct synaptics_hw_state *hw)
809 input_mt_slot(dev, slot);
810 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
814 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
815 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
816 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
819 static void synaptics_report_mt_data(struct psmouse *psmouse,
820 struct synaptics_mt_state *mt_state,
821 const struct synaptics_hw_state *sgm)
823 struct input_dev *dev = psmouse->dev;
824 struct synaptics_data *priv = psmouse->private;
825 struct synaptics_hw_state *agm = &priv->agm;
826 struct synaptics_mt_state *old = &priv->mt_state;
828 switch (mt_state->count) {
830 synaptics_report_slot(dev, 0, NULL);
831 synaptics_report_slot(dev, 1, NULL);
834 if (mt_state->sgm == -1) {
835 synaptics_report_slot(dev, 0, NULL);
836 synaptics_report_slot(dev, 1, NULL);
837 } else if (mt_state->sgm == 0) {
838 synaptics_report_slot(dev, 0, sgm);
839 synaptics_report_slot(dev, 1, NULL);
841 synaptics_report_slot(dev, 0, NULL);
842 synaptics_report_slot(dev, 1, sgm);
847 * If the finger slot contained in SGM is valid, and either
848 * hasn't changed, or is new, or the old SGM has now moved to
849 * AGM, then report SGM in MTB slot 0.
850 * Otherwise, empty MTB slot 0.
852 if (mt_state->sgm != -1 &&
853 (mt_state->sgm == old->sgm ||
854 old->sgm == -1 || mt_state->agm == old->sgm))
855 synaptics_report_slot(dev, 0, sgm);
857 synaptics_report_slot(dev, 0, NULL);
860 * If the finger slot contained in AGM is valid, and either
861 * hasn't changed, or is new, then report AGM in MTB slot 1.
862 * Otherwise, empty MTB slot 1.
864 * However, in the case where the AGM is new, make sure that
865 * that it is either the same as the old SGM, or there was no
868 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
869 * the new AGM will keep the old SGM's tracking ID, which can
870 * cause apparent drumroll. This happens if in the following
871 * valid finger sequence:
873 * Action SGM AGM (MTB slot:Contact)
874 * 1. Touch contact 0 (0:0)
875 * 2. Touch contact 1 (0:0, 1:1)
876 * 3. Lift contact 0 (1:1)
877 * 4. Touch contacts 2,3 (0:2, 1:3)
879 * In step 4, contact 3, in AGM must not be given the same
880 * tracking ID as contact 1 had in step 3. To avoid this,
881 * the first agm with contact 3 is dropped and slot 1 is
882 * invalidated (tracking ID = -1).
884 if (mt_state->agm != -1 &&
885 (mt_state->agm == old->agm ||
887 (old->sgm == -1 || mt_state->agm == old->sgm))))
888 synaptics_report_slot(dev, 1, agm);
890 synaptics_report_slot(dev, 1, NULL);
894 /* Don't use active slot count to generate BTN_TOOL events. */
895 input_mt_report_pointer_emulation(dev, false);
897 /* Send the number of fingers reported by touchpad itself. */
898 input_mt_report_finger_count(dev, mt_state->count);
900 synaptics_report_buttons(psmouse, sgm);
905 /* Handle case where mt_state->count = 0 */
906 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
907 struct synaptics_mt_state *mt_state)
909 synaptics_mt_state_set(mt_state, 0, -1, -1);
910 priv->mt_state_lost = false;
913 /* Handle case where mt_state->count = 1 */
914 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
915 struct synaptics_mt_state *mt_state)
917 struct synaptics_hw_state *agm = &priv->agm;
918 struct synaptics_mt_state *old = &priv->mt_state;
921 * If the last AGM was (0,0,0), and there is only one finger left,
922 * then we absolutely know that SGM contains slot 0, and all other
923 * fingers have been removed.
925 if (priv->agm_pending && agm->z == 0) {
926 synaptics_mt_state_set(mt_state, 1, 0, -1);
927 priv->mt_state_lost = false;
931 switch (old->count) {
933 synaptics_mt_state_set(mt_state, 1, 0, -1);
937 * If mt_state_lost, then the previous transition was 3->1,
938 * and SGM now contains either slot 0 or 1, but we don't know
939 * which. So, we just assume that the SGM now contains slot 1.
941 * If pending AGM and either:
942 * (a) the previous SGM slot contains slot 0, or
943 * (b) there was no SGM slot
944 * then, the SGM now contains slot 1
946 * Case (a) happens with very rapid "drum roll" gestures, where
947 * slot 0 finger is lifted and a new slot 1 finger touches
948 * within one reporting interval.
950 * Case (b) happens if initially two or more fingers tap
951 * briefly, and all but one lift before the end of the first
952 * reporting interval.
954 * (In both these cases, slot 0 will becomes empty, so SGM
955 * contains slot 1 with the new finger)
957 * Else, if there was no previous SGM, it now contains slot 0.
959 * Otherwise, SGM still contains the same slot.
961 if (priv->mt_state_lost ||
962 (priv->agm_pending && old->sgm <= 0))
963 synaptics_mt_state_set(mt_state, 1, 1, -1);
964 else if (old->sgm == -1)
965 synaptics_mt_state_set(mt_state, 1, 0, -1);
969 * If mt_state_lost, we don't know which finger SGM contains.
971 * So, report 1 finger, but with both slots empty.
972 * We will use slot 1 on subsequent 1->1
974 if (priv->mt_state_lost) {
975 synaptics_mt_state_set(mt_state, 1, -1, -1);
979 * Since the last AGM was NOT (0,0,0), it was the finger in
980 * slot 0 that has been removed.
981 * So, SGM now contains previous AGM's slot, and AGM is now
984 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
988 * Since last AGM was not (0,0,0), we don't know which finger
991 * So, report 1 finger, but with both slots empty.
992 * We will use slot 1 on subsequent 1->1
994 synaptics_mt_state_set(mt_state, 1, -1, -1);
995 priv->mt_state_lost = true;
999 /* mt_state was updated by AGM-CONTACT packet */
1004 /* Handle case where mt_state->count = 2 */
1005 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
1006 struct synaptics_mt_state *mt_state)
1008 struct synaptics_mt_state *old = &priv->mt_state;
1010 switch (old->count) {
1012 synaptics_mt_state_set(mt_state, 2, 0, 1);
1016 * If previous SGM contained slot 1 or higher, SGM now contains
1017 * slot 0 (the newly touching finger) and AGM contains SGM's
1020 * Otherwise, SGM still contains slot 0 and AGM now contains
1024 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
1026 synaptics_mt_state_set(mt_state, 2, 0, 1);
1030 * If mt_state_lost, SGM now contains either finger 1 or 2, but
1031 * we don't know which.
1032 * So, we just assume that the SGM contains slot 0 and AGM 1.
1034 if (priv->mt_state_lost)
1035 synaptics_mt_state_set(mt_state, 2, 0, 1);
1037 * Otherwise, use the same mt_state, since it either hasn't
1038 * changed, or was updated by a recently received AGM-CONTACT
1044 * 3->2 transitions have two unsolvable problems:
1045 * 1) no indication is given which finger was removed
1046 * 2) no way to tell if agm packet was for finger 3
1047 * before 3->2, or finger 2 after 3->2.
1049 * So, report 2 fingers, but empty all slots.
1050 * We will guess slots [0,1] on subsequent 2->2.
1052 synaptics_mt_state_set(mt_state, 2, -1, -1);
1053 priv->mt_state_lost = true;
1057 /* mt_state was updated by AGM-CONTACT packet */
1062 /* Handle case where mt_state->count = 3 */
1063 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1064 struct synaptics_mt_state *mt_state)
1066 struct synaptics_mt_state *old = &priv->mt_state;
1068 switch (old->count) {
1070 synaptics_mt_state_set(mt_state, 3, 0, 2);
1074 * If previous SGM contained slot 2 or higher, SGM now contains
1075 * slot 0 (one of the newly touching fingers) and AGM contains
1076 * SGM's previous slot.
1078 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1081 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1083 synaptics_mt_state_set(mt_state, 3, 0, 2);
1087 * If the AGM previously contained slot 3 or higher, then the
1088 * newly touching finger is in the lowest available slot.
1090 * If SGM was previously 1 or higher, then the new SGM is
1091 * now slot 0 (with a new finger), otherwise, the new finger
1092 * is now in a hidden slot between 0 and AGM's slot.
1094 * In all such cases, the SGM now contains slot 0, and the AGM
1095 * continues to contain the same slot as before.
1097 if (old->agm >= 3) {
1098 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1103 * After some 3->1 and all 3->2 transitions, we lose track
1104 * of which slot is reported by SGM and AGM.
1106 * For 2->3 in this state, report 3 fingers, but empty all
1107 * slots, and we will guess (0,2) on a subsequent 0->3.
1109 * To userspace, the resulting transition will look like:
1110 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1112 if (priv->mt_state_lost) {
1113 synaptics_mt_state_set(mt_state, 3, -1, -1);
1118 * If the (SGM,AGM) really previously contained slots (0, 1),
1119 * then we cannot know what slot was just reported by the AGM,
1120 * because the 2->3 transition can occur either before or after
1121 * the AGM packet. Thus, this most recent AGM could contain
1122 * either the same old slot 1 or the new slot 2.
1123 * Subsequent AGMs will be reporting slot 2.
1125 * To userspace, the resulting transition will look like:
1126 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1128 synaptics_mt_state_set(mt_state, 3, 0, -1);
1132 * If, for whatever reason, the previous agm was invalid,
1133 * Assume SGM now contains slot 0, AGM now contains slot 2.
1136 synaptics_mt_state_set(mt_state, 3, 0, 2);
1138 * mt_state either hasn't changed, or was updated by a recently
1139 * received AGM-CONTACT packet.
1145 /* mt_state was updated by AGM-CONTACT packet */
1150 /* Handle case where mt_state->count = 4, or = 5 */
1151 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1152 struct synaptics_mt_state *mt_state)
1154 /* mt_state was updated correctly by AGM-CONTACT packet */
1155 priv->mt_state_lost = false;
1158 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1159 struct synaptics_hw_state *sgm)
1161 struct synaptics_data *priv = psmouse->private;
1162 struct synaptics_hw_state *agm = &priv->agm;
1163 struct synaptics_mt_state mt_state;
1165 /* Initialize using current mt_state (as updated by last agm) */
1166 mt_state = agm->mt_state;
1169 * Update mt_state using the new finger count and current mt_state.
1172 synaptics_image_sensor_0f(priv, &mt_state);
1173 else if (sgm->w >= 4)
1174 synaptics_image_sensor_1f(priv, &mt_state);
1175 else if (sgm->w == 0)
1176 synaptics_image_sensor_2f(priv, &mt_state);
1177 else if (sgm->w == 1 && mt_state.count <= 3)
1178 synaptics_image_sensor_3f(priv, &mt_state);
1180 synaptics_image_sensor_45f(priv, &mt_state);
1182 /* Send resulting input events to user space */
1183 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1185 /* Store updated mt_state */
1186 priv->mt_state = agm->mt_state = mt_state;
1187 priv->agm_pending = false;
1190 static void synaptics_profile_sensor_process(struct psmouse *psmouse,
1191 struct synaptics_hw_state *sgm,
1194 struct input_dev *dev = psmouse->dev;
1195 struct synaptics_data *priv = psmouse->private;
1196 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
1197 struct input_mt_pos pos[2];
1198 int slot[2], nsemi, i;
1200 nsemi = clamp_val(num_fingers, 0, 2);
1202 for (i = 0; i < nsemi; i++) {
1203 pos[i].x = hw[i]->x;
1204 pos[i].y = synaptics_invert_y(hw[i]->y);
1207 input_mt_assign_slots(dev, slot, pos, nsemi);
1209 for (i = 0; i < nsemi; i++) {
1210 input_mt_slot(dev, slot[i]);
1211 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1212 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1213 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1214 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1217 input_mt_drop_unused(dev);
1218 input_mt_report_pointer_emulation(dev, false);
1219 input_mt_report_finger_count(dev, num_fingers);
1221 synaptics_report_buttons(psmouse, sgm);
1227 * called for each full received packet from the touchpad
1229 static void synaptics_process_packet(struct psmouse *psmouse)
1231 struct input_dev *dev = psmouse->dev;
1232 struct synaptics_data *priv = psmouse->private;
1233 struct synaptics_hw_state hw;
1237 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1240 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1241 synaptics_image_sensor_process(psmouse, &hw);
1246 priv->scroll += hw.scroll;
1248 while (priv->scroll >= 4) {
1249 input_report_key(dev, BTN_BACK, !hw.down);
1251 input_report_key(dev, BTN_BACK, hw.down);
1255 while (priv->scroll <= -4) {
1256 input_report_key(dev, BTN_FORWARD, !hw.up);
1258 input_report_key(dev, BTN_FORWARD, hw.up);
1265 if (hw.z > 0 && hw.x > 1) {
1268 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1271 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1272 num_fingers = hw.w + 2;
1275 if (SYN_MODEL_PEN(priv->model_id))
1276 ; /* Nothing, treat a pen as a single finger */
1279 if (SYN_CAP_PALMDETECT(priv->capabilities))
1280 finger_width = hw.w;
1289 if (cr48_profile_sensor) {
1290 synaptics_profile_sensor_process(psmouse, &hw, num_fingers);
1294 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1295 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1299 * BTN_TOUCH has to be first as mousedev relies on it when doing
1300 * absolute -> relative conversion
1302 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1303 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1305 if (num_fingers > 0) {
1306 input_report_abs(dev, ABS_X, hw.x);
1307 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1309 input_report_abs(dev, ABS_PRESSURE, hw.z);
1311 if (SYN_CAP_PALMDETECT(priv->capabilities))
1312 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1314 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1315 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1316 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1317 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1320 synaptics_report_buttons(psmouse, &hw);
1325 static int synaptics_validate_byte(struct psmouse *psmouse,
1326 int idx, unsigned char pkt_type)
1328 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1329 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1330 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1331 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1332 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1333 const char *packet = psmouse->packet;
1335 if (idx < 0 || idx > 4)
1341 case SYN_NEWABS_RELAXED:
1342 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1344 case SYN_NEWABS_STRICT:
1345 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1348 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1351 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1356 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1360 for (i = 0; i < 5; i++)
1361 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1362 psmouse_info(psmouse, "using relaxed packet validation\n");
1363 return SYN_NEWABS_RELAXED;
1366 return SYN_NEWABS_STRICT;
1369 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1371 struct synaptics_data *priv = psmouse->private;
1373 if (psmouse->pktcnt >= 6) { /* Full packet received */
1374 if (unlikely(priv->pkt_type == SYN_NEWABS))
1375 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1377 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1378 synaptics_is_pt_packet(psmouse->packet)) {
1380 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1382 synaptics_process_packet(psmouse);
1384 return PSMOUSE_FULL_PACKET;
1387 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1388 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1391 /*****************************************************************************
1392 * Driver initialization/cleanup functions
1393 ****************************************************************************/
1394 static void set_abs_position_params(struct input_dev *dev,
1395 struct synaptics_data *priv, int x_code,
1398 int x_min = priv->x_min ?: XMIN_NOMINAL;
1399 int x_max = priv->x_max ?: XMAX_NOMINAL;
1400 int y_min = priv->y_min ?: YMIN_NOMINAL;
1401 int y_max = priv->y_max ?: YMAX_NOMINAL;
1402 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1403 SYN_REDUCED_FILTER_FUZZ : 0;
1405 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1406 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1407 input_abs_set_res(dev, x_code, priv->x_res);
1408 input_abs_set_res(dev, y_code, priv->y_res);
1411 static void set_input_params(struct psmouse *psmouse,
1412 struct synaptics_data *priv)
1414 struct input_dev *dev = psmouse->dev;
1417 /* Things that apply to both modes */
1418 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1419 __set_bit(EV_KEY, dev->evbit);
1420 __set_bit(BTN_LEFT, dev->keybit);
1421 __set_bit(BTN_RIGHT, dev->keybit);
1423 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1424 __set_bit(BTN_MIDDLE, dev->keybit);
1426 if (!priv->absolute_mode) {
1428 __set_bit(EV_REL, dev->evbit);
1429 __set_bit(REL_X, dev->relbit);
1430 __set_bit(REL_Y, dev->relbit);
1435 __set_bit(EV_ABS, dev->evbit);
1436 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1437 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1439 if (cr48_profile_sensor)
1440 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1442 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1443 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1445 /* Image sensors can report per-contact pressure */
1446 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1447 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1449 /* Image sensors can signal 4 and 5 finger clicks */
1450 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1451 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1452 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1453 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1456 * Profile sensor in CR-48 tracks contacts reasonably well,
1457 * other non-image sensors with AGM use semi-mt.
1459 input_mt_init_slots(dev, 2,
1461 (cr48_profile_sensor ?
1462 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1465 if (SYN_CAP_PALMDETECT(priv->capabilities))
1466 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1468 __set_bit(BTN_TOUCH, dev->keybit);
1469 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1471 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1472 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1473 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1476 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1477 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1478 __set_bit(BTN_FORWARD, dev->keybit);
1479 __set_bit(BTN_BACK, dev->keybit);
1482 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1483 __set_bit(BTN_0 + i, dev->keybit);
1485 __clear_bit(EV_REL, dev->evbit);
1486 __clear_bit(REL_X, dev->relbit);
1487 __clear_bit(REL_Y, dev->relbit);
1489 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1490 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1491 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1492 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1493 /* Clickpads report only left button */
1494 __clear_bit(BTN_RIGHT, dev->keybit);
1495 __clear_bit(BTN_MIDDLE, dev->keybit);
1499 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1500 void *data, char *buf)
1502 struct synaptics_data *priv = psmouse->private;
1504 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1507 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1508 void *data, const char *buf,
1511 struct synaptics_data *priv = psmouse->private;
1515 err = kstrtouint(buf, 10, &value);
1522 if (value == priv->disable_gesture)
1525 priv->disable_gesture = value;
1527 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1529 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1531 if (synaptics_mode_cmd(psmouse, priv->mode))
1537 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1538 synaptics_show_disable_gesture,
1539 synaptics_set_disable_gesture);
1541 static void synaptics_disconnect(struct psmouse *psmouse)
1543 struct synaptics_data *priv = psmouse->private;
1545 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1546 device_remove_file(&psmouse->ps2dev.serio->dev,
1547 &psmouse_attr_disable_gesture.dattr);
1549 synaptics_reset(psmouse);
1551 psmouse->private = NULL;
1554 static int synaptics_reconnect(struct psmouse *psmouse)
1556 struct synaptics_data *priv = psmouse->private;
1557 struct synaptics_data old_priv = *priv;
1558 unsigned char param[2];
1563 psmouse_reset(psmouse);
1566 * On some boxes, right after resuming, the touchpad
1567 * needs some time to finish initializing (I assume
1568 * it needs time to calibrate) and start responding
1569 * to Synaptics-specific queries, so let's wait a
1574 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1575 error = synaptics_detect(psmouse, 0);
1576 } while (error && ++retry < 3);
1582 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1584 if (synaptics_query_hardware(psmouse)) {
1585 psmouse_err(psmouse, "Unable to query device.\n");
1589 if (synaptics_set_mode(psmouse)) {
1590 psmouse_err(psmouse, "Unable to initialize device.\n");
1594 if (old_priv.identity != priv->identity ||
1595 old_priv.model_id != priv->model_id ||
1596 old_priv.capabilities != priv->capabilities ||
1597 old_priv.ext_cap != priv->ext_cap) {
1598 psmouse_err(psmouse,
1599 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1600 old_priv.identity, priv->identity,
1601 old_priv.model_id, priv->model_id,
1602 old_priv.capabilities, priv->capabilities,
1603 old_priv.ext_cap, priv->ext_cap);
1610 static bool impaired_toshiba_kbc;
1612 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1613 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1615 /* Toshiba Satellite */
1617 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1618 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1622 /* Toshiba Dynabook */
1624 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1625 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1629 /* Toshiba Portege M300 */
1631 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1632 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1637 /* Toshiba Portege M300 */
1639 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1640 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1641 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1649 static bool broken_olpc_ec;
1651 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1652 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1654 /* OLPC XO-1 or XO-1.5 */
1656 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1657 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1664 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1665 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1667 /* Cr-48 Chromebook (Codename Mario) */
1669 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1670 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1677 static const struct dmi_system_id forcepad_dmi_table[] __initconst = {
1678 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1681 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1682 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"),
1689 void __init synaptics_module_init(void)
1691 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1692 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1693 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1696 * Unfortunately ForcePad capability is not exported over PS/2,
1697 * so we have to resort to checking DMI.
1699 is_forcepad = dmi_check_system(forcepad_dmi_table);
1702 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1704 struct synaptics_data *priv;
1708 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1709 * packet spew overloads the EC such that key presses on the keyboard
1710 * are missed. Given that, don't even attempt to use Absolute mode.
1711 * Relative mode seems to work just fine.
1713 if (absolute_mode && broken_olpc_ec) {
1714 psmouse_info(psmouse,
1715 "OLPC XO detected, not enabling Synaptics protocol.\n");
1719 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1723 psmouse_reset(psmouse);
1725 if (synaptics_query_hardware(psmouse)) {
1726 psmouse_err(psmouse, "Unable to query device.\n");
1730 priv->absolute_mode = absolute_mode;
1731 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1732 priv->disable_gesture = true;
1734 if (synaptics_set_mode(psmouse)) {
1735 psmouse_err(psmouse, "Unable to initialize device.\n");
1739 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1741 psmouse_info(psmouse,
1742 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1743 SYN_ID_MODEL(priv->identity),
1744 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1746 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1747 priv->board_id, priv->firmware_id);
1749 set_input_params(psmouse, priv);
1752 * Encode touchpad model so that it can be used to set
1753 * input device->id.version and be visible to userspace.
1754 * Because version is __u16 we have to drop something.
1755 * Hardware info bits seem to be good candidates as they
1756 * are documented to be for Synaptics corp. internal use.
1758 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1759 (priv->model_id & 0x000000ff);
1761 if (absolute_mode) {
1762 psmouse->protocol_handler = synaptics_process_byte;
1763 psmouse->pktsize = 6;
1765 /* Relative mode follows standard PS/2 mouse protocol */
1766 psmouse->protocol_handler = psmouse_process_byte;
1767 psmouse->pktsize = 3;
1770 psmouse->set_rate = synaptics_set_rate;
1771 psmouse->disconnect = synaptics_disconnect;
1772 psmouse->reconnect = synaptics_reconnect;
1773 psmouse->cleanup = synaptics_reset;
1774 /* Synaptics can usually stay in sync without extra help */
1775 psmouse->resync_time = 0;
1777 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1778 synaptics_pt_create(psmouse);
1781 * Toshiba's KBC seems to have trouble handling data from
1782 * Synaptics at full rate. Switch to a lower rate (roughly
1783 * the same rate as a standard PS/2 mouse).
1785 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1786 psmouse_info(psmouse,
1787 "Toshiba %s detected, limiting rate to 40pps.\n",
1788 dmi_get_system_info(DMI_PRODUCT_NAME));
1792 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1793 err = device_create_file(&psmouse->ps2dev.serio->dev,
1794 &psmouse_attr_disable_gesture.dattr);
1796 psmouse_err(psmouse,
1797 "Failed to create disable_gesture attribute (%d)",
1810 int synaptics_init(struct psmouse *psmouse)
1812 return __synaptics_init(psmouse, true);
1815 int synaptics_init_relative(struct psmouse *psmouse)
1817 return __synaptics_init(psmouse, false);
1820 bool synaptics_supported(void)
1825 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1827 void __init synaptics_module_init(void)
1831 int synaptics_init(struct psmouse *psmouse)
1836 bool synaptics_supported(void)
1841 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */