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
71 * Synaptics touchpads report the y coordinate from bottom to top, which is
72 * opposite from what userspace expects.
73 * This function is used to invert y before reporting.
75 static int synaptics_invert_y(int y)
77 return YMAX_NOMINAL + YMIN_NOMINAL - y;
81 /*****************************************************************************
82 * Stuff we need even when we do not want native Synaptics support
83 ****************************************************************************/
86 * Set the synaptics touchpad mode byte by special commands
88 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
90 unsigned char param[1];
92 if (psmouse_sliced_command(psmouse, mode))
94 param[0] = SYN_PS_SET_MODE2;
95 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
100 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
102 struct ps2dev *ps2dev = &psmouse->ps2dev;
103 unsigned char param[4];
107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
108 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
109 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
110 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
111 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
113 if (param[1] != 0x47)
116 if (set_properties) {
117 psmouse->vendor = "Synaptics";
118 psmouse->name = "TouchPad";
124 void synaptics_reset(struct psmouse *psmouse)
126 /* reset touchpad back to relative mode, gestures enabled */
127 synaptics_mode_cmd(psmouse, 0);
130 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
132 /*****************************************************************************
133 * Synaptics communications functions
134 ****************************************************************************/
137 * Send a command to the synpatics touchpad by special commands
139 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
141 if (psmouse_sliced_command(psmouse, c))
143 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
149 * Read the model-id bytes from the touchpad
150 * see also SYN_MODEL_* macros
152 static int synaptics_model_id(struct psmouse *psmouse)
154 struct synaptics_data *priv = psmouse->private;
157 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
159 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
164 * Read the capability-bits from the touchpad
165 * see also the SYN_CAP_* macros
167 static int synaptics_capability(struct psmouse *psmouse)
169 struct synaptics_data *priv = psmouse->private;
170 unsigned char cap[3];
172 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
174 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
175 priv->ext_cap = priv->ext_cap_0c = 0;
178 * Older firmwares had submodel ID fixed to 0x47
180 if (SYN_ID_FULL(priv->identity) < 0x705 &&
181 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
186 * Unless capExtended is set the rest of the flags should be ignored
188 if (!SYN_CAP_EXTENDED(priv->capabilities))
189 priv->capabilities = 0;
191 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
192 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
193 psmouse_warn(psmouse,
194 "device claims to have extended capabilities, but I'm not able to read them.\n");
196 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
199 * if nExtBtn is greater than 8 it should be considered
200 * invalid and treated as 0
202 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
203 priv->ext_cap &= 0xff0fff;
207 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
208 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
209 psmouse_warn(psmouse,
210 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
212 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
221 * See also the SYN_ID_* macros
223 static int synaptics_identify(struct psmouse *psmouse)
225 struct synaptics_data *priv = psmouse->private;
228 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
230 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
231 if (SYN_ID_IS_SYNAPTICS(priv->identity))
237 * Read touchpad resolution and maximum reported coordinates
238 * Resolution is left zero if touchpad does not support the query
241 static const int *quirk_min_max;
243 static int synaptics_resolution(struct psmouse *psmouse)
245 struct synaptics_data *priv = psmouse->private;
246 unsigned char resp[3];
248 if (SYN_ID_MAJOR(priv->identity) < 4)
251 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
252 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
253 priv->x_res = resp[0]; /* x resolution in units/mm */
254 priv->y_res = resp[2]; /* y resolution in units/mm */
259 priv->x_min = quirk_min_max[0];
260 priv->x_max = quirk_min_max[1];
261 priv->y_min = quirk_min_max[2];
262 priv->y_max = quirk_min_max[3];
266 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
267 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
268 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
269 psmouse_warn(psmouse,
270 "device claims to have max coordinates query, but I'm not able to read it.\n");
272 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
273 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
277 if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) &&
278 (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 ||
280 * Firmware v8.1 does not report proper number of extended
281 * capabilities, but has been proven to report correct min
284 SYN_ID_FULL(priv->identity) == 0x801)) {
285 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
286 psmouse_warn(psmouse,
287 "device claims to have min coordinates query, but I'm not able to read it.\n");
289 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
290 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
297 static int synaptics_query_hardware(struct psmouse *psmouse)
299 if (synaptics_identify(psmouse))
301 if (synaptics_model_id(psmouse))
303 if (synaptics_capability(psmouse))
305 if (synaptics_resolution(psmouse))
311 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
313 struct synaptics_data *priv = psmouse->private;
315 priv->mode = SYN_BIT_ABSOLUTE_MODE;
316 if (SYN_ID_MAJOR(priv->identity) >= 4)
317 priv->mode |= SYN_BIT_DISABLE_GESTURE;
318 if (SYN_CAP_EXTENDED(priv->capabilities))
319 priv->mode |= SYN_BIT_W_MODE;
321 if (synaptics_mode_cmd(psmouse, priv->mode))
327 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
329 struct synaptics_data *priv = psmouse->private;
332 priv->mode |= SYN_BIT_HIGH_RATE;
335 priv->mode &= ~SYN_BIT_HIGH_RATE;
339 synaptics_mode_cmd(psmouse, priv->mode);
342 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
344 static unsigned char param = 0xc8;
345 struct synaptics_data *priv = psmouse->private;
347 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
348 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
351 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
353 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
356 /* Advanced gesture mode also sends multi finger data */
357 priv->capabilities |= BIT(1);
362 /*****************************************************************************
363 * Synaptics pass-through PS/2 port support
364 ****************************************************************************/
365 static int synaptics_pt_write(struct serio *serio, unsigned char c)
367 struct psmouse *parent = serio_get_drvdata(serio->parent);
368 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
370 if (psmouse_sliced_command(parent, c))
372 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
377 static int synaptics_pt_start(struct serio *serio)
379 struct psmouse *parent = serio_get_drvdata(serio->parent);
380 struct synaptics_data *priv = parent->private;
382 serio_pause_rx(parent->ps2dev.serio);
383 priv->pt_port = serio;
384 serio_continue_rx(parent->ps2dev.serio);
389 static void synaptics_pt_stop(struct serio *serio)
391 struct psmouse *parent = serio_get_drvdata(serio->parent);
392 struct synaptics_data *priv = parent->private;
394 serio_pause_rx(parent->ps2dev.serio);
395 priv->pt_port = NULL;
396 serio_continue_rx(parent->ps2dev.serio);
399 static int synaptics_is_pt_packet(unsigned char *buf)
401 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
404 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
406 struct psmouse *child = serio_get_drvdata(ptport);
408 if (child && child->state == PSMOUSE_ACTIVATED) {
409 serio_interrupt(ptport, packet[1], 0);
410 serio_interrupt(ptport, packet[4], 0);
411 serio_interrupt(ptport, packet[5], 0);
412 if (child->pktsize == 4)
413 serio_interrupt(ptport, packet[2], 0);
415 serio_interrupt(ptport, packet[1], 0);
418 static void synaptics_pt_activate(struct psmouse *psmouse)
420 struct synaptics_data *priv = psmouse->private;
421 struct psmouse *child = serio_get_drvdata(priv->pt_port);
423 /* adjust the touchpad to child's choice of protocol */
425 if (child->pktsize == 4)
426 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
428 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
430 if (synaptics_mode_cmd(psmouse, priv->mode))
431 psmouse_warn(psmouse,
432 "failed to switch guest protocol\n");
436 static void synaptics_pt_create(struct psmouse *psmouse)
440 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
443 "not enough memory for pass-through port\n");
447 serio->id.type = SERIO_PS_PSTHRU;
448 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
449 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
450 serio->write = synaptics_pt_write;
451 serio->start = synaptics_pt_start;
452 serio->stop = synaptics_pt_stop;
453 serio->parent = psmouse->ps2dev.serio;
455 psmouse->pt_activate = synaptics_pt_activate;
457 psmouse_info(psmouse, "serio: %s port at %s\n",
458 serio->name, psmouse->phys);
459 serio_register_port(serio);
462 /*****************************************************************************
463 * Functions to interpret the absolute mode packets
464 ****************************************************************************/
466 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
469 state->count = count;
474 static void synaptics_parse_agm(const unsigned char buf[],
475 struct synaptics_data *priv,
476 struct synaptics_hw_state *hw)
478 struct synaptics_hw_state *agm = &priv->agm;
481 agm_packet_type = (buf[5] & 0x30) >> 4;
482 switch (agm_packet_type) {
484 /* Gesture packet: (x, y, z) half resolution */
486 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
487 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
488 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
492 /* AGM-CONTACT packet: (count, sgm, agm) */
493 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
500 /* Record that at least one AGM has been received since last SGM */
501 priv->agm_pending = true;
504 static void synaptics_parse_ext_buttons(const unsigned char buf[],
505 struct synaptics_data *priv,
506 struct synaptics_hw_state *hw)
508 unsigned int ext_bits =
509 (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
510 unsigned int ext_mask = (1U << ext_bits) - 1;
512 hw->ext_buttons = buf[4] & ext_mask;
513 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
516 static bool is_forcepad;
518 static int synaptics_parse_hw_state(const unsigned char buf[],
519 struct synaptics_data *priv,
520 struct synaptics_hw_state *hw)
522 memset(hw, 0, sizeof(struct synaptics_hw_state));
524 if (SYN_MODEL_NEWABS(priv->model_id)) {
525 hw->w = (((buf[0] & 0x30) >> 2) |
526 ((buf[0] & 0x04) >> 1) |
527 ((buf[3] & 0x04) >> 2));
529 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
530 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
532 synaptics_parse_agm(buf, priv, hw);
536 hw->x = (((buf[3] & 0x10) << 8) |
537 ((buf[1] & 0x0f) << 8) |
539 hw->y = (((buf[3] & 0x20) << 7) |
540 ((buf[1] & 0xf0) << 4) |
544 hw->left = (buf[0] & 0x01) ? 1 : 0;
545 hw->right = (buf[0] & 0x02) ? 1 : 0;
549 * ForcePads, like Clickpads, use middle button
550 * bits to report primary button clicks.
551 * Unfortunately they report primary button not
552 * only when user presses on the pad above certain
553 * threshold, but also when there are more than one
554 * finger on the touchpad, which interferes with
555 * out multi-finger gestures.
559 priv->press = priv->report_press = false;
560 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
562 * Single-finger touch with pressure above
563 * the threshold. If pressure stays long
564 * enough, we'll start reporting primary
565 * button. We rely on the device continuing
566 * sending data even if finger does not
570 priv->press_start = jiffies;
572 } else if (time_after(jiffies,
574 msecs_to_jiffies(50))) {
575 priv->report_press = true;
581 hw->left = priv->report_press;
583 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
585 * Clickpad's button is transmitted as middle button,
586 * however, since it is primary button, we will report
589 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
591 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
592 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
594 hw->scroll = (signed char)(buf[1]);
597 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
598 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
599 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
602 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 &&
603 ((buf[0] ^ buf[3]) & 0x02)) {
604 synaptics_parse_ext_buttons(buf, priv, hw);
607 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
608 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
610 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
611 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
613 hw->left = (buf[0] & 0x01) ? 1 : 0;
614 hw->right = (buf[0] & 0x02) ? 1 : 0;
618 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
619 * is used by some firmware to indicate a finger at the edge of
620 * the touchpad whose precise position cannot be determined, so
621 * convert these values to the maximum axis value.
623 if (hw->x > X_MAX_POSITIVE)
624 hw->x -= 1 << ABS_POS_BITS;
625 else if (hw->x == X_MAX_POSITIVE)
628 if (hw->y > Y_MAX_POSITIVE)
629 hw->y -= 1 << ABS_POS_BITS;
630 else if (hw->y == Y_MAX_POSITIVE)
636 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
637 bool active, int x, int y)
639 input_mt_slot(dev, slot);
640 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
642 input_report_abs(dev, ABS_MT_POSITION_X, x);
643 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
647 static void synaptics_report_semi_mt_data(struct input_dev *dev,
648 const struct synaptics_hw_state *a,
649 const struct synaptics_hw_state *b,
652 if (num_fingers >= 2) {
653 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
655 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
657 } else if (num_fingers == 1) {
658 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
659 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
661 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
662 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
666 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
667 const struct synaptics_hw_state *hw)
669 struct input_dev *dev = psmouse->dev;
670 struct synaptics_data *priv = psmouse->private;
671 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
674 if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
677 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
678 if ((SYN_ID_FULL(priv->identity) == 0x801 ||
679 SYN_ID_FULL(priv->identity) == 0x802) &&
680 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
683 for (i = 0; i < ext_bits; i++) {
684 input_report_key(dev, BTN_0 + 2 * i,
685 hw->ext_buttons & (1 << i));
686 input_report_key(dev, BTN_1 + 2 * i,
687 hw->ext_buttons & (1 << (i + ext_bits)));
691 static void synaptics_report_buttons(struct psmouse *psmouse,
692 const struct synaptics_hw_state *hw)
694 struct input_dev *dev = psmouse->dev;
695 struct synaptics_data *priv = psmouse->private;
697 input_report_key(dev, BTN_LEFT, hw->left);
698 input_report_key(dev, BTN_RIGHT, hw->right);
700 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
701 input_report_key(dev, BTN_MIDDLE, hw->middle);
703 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
704 input_report_key(dev, BTN_FORWARD, hw->up);
705 input_report_key(dev, BTN_BACK, hw->down);
708 synaptics_report_ext_buttons(psmouse, hw);
711 static void synaptics_report_slot(struct input_dev *dev, int slot,
712 const struct synaptics_hw_state *hw)
714 input_mt_slot(dev, slot);
715 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
719 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
720 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
721 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
724 static void synaptics_report_mt_data(struct psmouse *psmouse,
725 struct synaptics_mt_state *mt_state,
726 const struct synaptics_hw_state *sgm)
728 struct input_dev *dev = psmouse->dev;
729 struct synaptics_data *priv = psmouse->private;
730 struct synaptics_hw_state *agm = &priv->agm;
731 struct synaptics_mt_state *old = &priv->mt_state;
733 switch (mt_state->count) {
735 synaptics_report_slot(dev, 0, NULL);
736 synaptics_report_slot(dev, 1, NULL);
739 if (mt_state->sgm == -1) {
740 synaptics_report_slot(dev, 0, NULL);
741 synaptics_report_slot(dev, 1, NULL);
742 } else if (mt_state->sgm == 0) {
743 synaptics_report_slot(dev, 0, sgm);
744 synaptics_report_slot(dev, 1, NULL);
746 synaptics_report_slot(dev, 0, NULL);
747 synaptics_report_slot(dev, 1, sgm);
752 * If the finger slot contained in SGM is valid, and either
753 * hasn't changed, or is new, then report SGM in MTB slot 0.
754 * Otherwise, empty MTB slot 0.
756 if (mt_state->sgm != -1 &&
757 (mt_state->sgm == old->sgm || old->sgm == -1))
758 synaptics_report_slot(dev, 0, sgm);
760 synaptics_report_slot(dev, 0, NULL);
763 * If the finger slot contained in AGM is valid, and either
764 * hasn't changed, or is new, then report AGM in MTB slot 1.
765 * Otherwise, empty MTB slot 1.
767 if (mt_state->agm != -1 &&
768 (mt_state->agm == old->agm || old->agm == -1))
769 synaptics_report_slot(dev, 1, agm);
771 synaptics_report_slot(dev, 1, NULL);
775 /* Don't use active slot count to generate BTN_TOOL events. */
776 input_mt_report_pointer_emulation(dev, false);
778 /* Send the number of fingers reported by touchpad itself. */
779 input_mt_report_finger_count(dev, mt_state->count);
781 synaptics_report_buttons(psmouse, sgm);
786 /* Handle case where mt_state->count = 0 */
787 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
788 struct synaptics_mt_state *mt_state)
790 synaptics_mt_state_set(mt_state, 0, -1, -1);
791 priv->mt_state_lost = false;
794 /* Handle case where mt_state->count = 1 */
795 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
796 struct synaptics_mt_state *mt_state)
798 struct synaptics_hw_state *agm = &priv->agm;
799 struct synaptics_mt_state *old = &priv->mt_state;
802 * If the last AGM was (0,0,0), and there is only one finger left,
803 * then we absolutely know that SGM contains slot 0, and all other
804 * fingers have been removed.
806 if (priv->agm_pending && agm->z == 0) {
807 synaptics_mt_state_set(mt_state, 1, 0, -1);
808 priv->mt_state_lost = false;
812 switch (old->count) {
814 synaptics_mt_state_set(mt_state, 1, 0, -1);
818 * If mt_state_lost, then the previous transition was 3->1,
819 * and SGM now contains either slot 0 or 1, but we don't know
820 * which. So, we just assume that the SGM now contains slot 1.
822 * If pending AGM and either:
823 * (a) the previous SGM slot contains slot 0, or
824 * (b) there was no SGM slot
825 * then, the SGM now contains slot 1
827 * Case (a) happens with very rapid "drum roll" gestures, where
828 * slot 0 finger is lifted and a new slot 1 finger touches
829 * within one reporting interval.
831 * Case (b) happens if initially two or more fingers tap
832 * briefly, and all but one lift before the end of the first
833 * reporting interval.
835 * (In both these cases, slot 0 will becomes empty, so SGM
836 * contains slot 1 with the new finger)
838 * Else, if there was no previous SGM, it now contains slot 0.
840 * Otherwise, SGM still contains the same slot.
842 if (priv->mt_state_lost ||
843 (priv->agm_pending && old->sgm <= 0))
844 synaptics_mt_state_set(mt_state, 1, 1, -1);
845 else if (old->sgm == -1)
846 synaptics_mt_state_set(mt_state, 1, 0, -1);
850 * If mt_state_lost, we don't know which finger SGM contains.
852 * So, report 1 finger, but with both slots empty.
853 * We will use slot 1 on subsequent 1->1
855 if (priv->mt_state_lost) {
856 synaptics_mt_state_set(mt_state, 1, -1, -1);
860 * Since the last AGM was NOT (0,0,0), it was the finger in
861 * slot 0 that has been removed.
862 * So, SGM now contains previous AGM's slot, and AGM is now
865 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
869 * Since last AGM was not (0,0,0), we don't know which finger
872 * So, report 1 finger, but with both slots empty.
873 * We will use slot 1 on subsequent 1->1
875 synaptics_mt_state_set(mt_state, 1, -1, -1);
876 priv->mt_state_lost = true;
880 /* mt_state was updated by AGM-CONTACT packet */
885 /* Handle case where mt_state->count = 2 */
886 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
887 struct synaptics_mt_state *mt_state)
889 struct synaptics_mt_state *old = &priv->mt_state;
891 switch (old->count) {
893 synaptics_mt_state_set(mt_state, 2, 0, 1);
897 * If previous SGM contained slot 1 or higher, SGM now contains
898 * slot 0 (the newly touching finger) and AGM contains SGM's
901 * Otherwise, SGM still contains slot 0 and AGM now contains
905 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
907 synaptics_mt_state_set(mt_state, 2, 0, 1);
911 * If mt_state_lost, SGM now contains either finger 1 or 2, but
912 * we don't know which.
913 * So, we just assume that the SGM contains slot 0 and AGM 1.
915 if (priv->mt_state_lost)
916 synaptics_mt_state_set(mt_state, 2, 0, 1);
918 * Otherwise, use the same mt_state, since it either hasn't
919 * changed, or was updated by a recently received AGM-CONTACT
925 * 3->2 transitions have two unsolvable problems:
926 * 1) no indication is given which finger was removed
927 * 2) no way to tell if agm packet was for finger 3
928 * before 3->2, or finger 2 after 3->2.
930 * So, report 2 fingers, but empty all slots.
931 * We will guess slots [0,1] on subsequent 2->2.
933 synaptics_mt_state_set(mt_state, 2, -1, -1);
934 priv->mt_state_lost = true;
938 /* mt_state was updated by AGM-CONTACT packet */
943 /* Handle case where mt_state->count = 3 */
944 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
945 struct synaptics_mt_state *mt_state)
947 struct synaptics_mt_state *old = &priv->mt_state;
949 switch (old->count) {
951 synaptics_mt_state_set(mt_state, 3, 0, 2);
955 * If previous SGM contained slot 2 or higher, SGM now contains
956 * slot 0 (one of the newly touching fingers) and AGM contains
957 * SGM's previous slot.
959 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
962 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
964 synaptics_mt_state_set(mt_state, 3, 0, 2);
968 * If the AGM previously contained slot 3 or higher, then the
969 * newly touching finger is in the lowest available slot.
971 * If SGM was previously 1 or higher, then the new SGM is
972 * now slot 0 (with a new finger), otherwise, the new finger
973 * is now in a hidden slot between 0 and AGM's slot.
975 * In all such cases, the SGM now contains slot 0, and the AGM
976 * continues to contain the same slot as before.
979 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
984 * After some 3->1 and all 3->2 transitions, we lose track
985 * of which slot is reported by SGM and AGM.
987 * For 2->3 in this state, report 3 fingers, but empty all
988 * slots, and we will guess (0,2) on a subsequent 0->3.
990 * To userspace, the resulting transition will look like:
991 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
993 if (priv->mt_state_lost) {
994 synaptics_mt_state_set(mt_state, 3, -1, -1);
999 * If the (SGM,AGM) really previously contained slots (0, 1),
1000 * then we cannot know what slot was just reported by the AGM,
1001 * because the 2->3 transition can occur either before or after
1002 * the AGM packet. Thus, this most recent AGM could contain
1003 * either the same old slot 1 or the new slot 2.
1004 * Subsequent AGMs will be reporting slot 2.
1006 * To userspace, the resulting transition will look like:
1007 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1009 synaptics_mt_state_set(mt_state, 3, 0, -1);
1013 * If, for whatever reason, the previous agm was invalid,
1014 * Assume SGM now contains slot 0, AGM now contains slot 2.
1017 synaptics_mt_state_set(mt_state, 3, 0, 2);
1019 * mt_state either hasn't changed, or was updated by a recently
1020 * received AGM-CONTACT packet.
1026 /* mt_state was updated by AGM-CONTACT packet */
1031 /* Handle case where mt_state->count = 4, or = 5 */
1032 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1033 struct synaptics_mt_state *mt_state)
1035 /* mt_state was updated correctly by AGM-CONTACT packet */
1036 priv->mt_state_lost = false;
1039 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1040 struct synaptics_hw_state *sgm)
1042 struct synaptics_data *priv = psmouse->private;
1043 struct synaptics_hw_state *agm = &priv->agm;
1044 struct synaptics_mt_state mt_state;
1046 /* Initialize using current mt_state (as updated by last agm) */
1047 mt_state = agm->mt_state;
1050 * Update mt_state using the new finger count and current mt_state.
1053 synaptics_image_sensor_0f(priv, &mt_state);
1054 else if (sgm->w >= 4)
1055 synaptics_image_sensor_1f(priv, &mt_state);
1056 else if (sgm->w == 0)
1057 synaptics_image_sensor_2f(priv, &mt_state);
1058 else if (sgm->w == 1 && mt_state.count <= 3)
1059 synaptics_image_sensor_3f(priv, &mt_state);
1061 synaptics_image_sensor_45f(priv, &mt_state);
1063 /* Send resulting input events to user space */
1064 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1066 /* Store updated mt_state */
1067 priv->mt_state = agm->mt_state = mt_state;
1068 priv->agm_pending = false;
1072 * called for each full received packet from the touchpad
1074 static void synaptics_process_packet(struct psmouse *psmouse)
1076 struct input_dev *dev = psmouse->dev;
1077 struct synaptics_data *priv = psmouse->private;
1078 struct synaptics_hw_state hw;
1082 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1085 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1086 synaptics_image_sensor_process(psmouse, &hw);
1091 priv->scroll += hw.scroll;
1093 while (priv->scroll >= 4) {
1094 input_report_key(dev, BTN_BACK, !hw.down);
1096 input_report_key(dev, BTN_BACK, hw.down);
1100 while (priv->scroll <= -4) {
1101 input_report_key(dev, BTN_FORWARD, !hw.up);
1103 input_report_key(dev, BTN_FORWARD, hw.up);
1110 if (hw.z > 0 && hw.x > 1) {
1113 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1116 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1117 num_fingers = hw.w + 2;
1120 if (SYN_MODEL_PEN(priv->model_id))
1121 ; /* Nothing, treat a pen as a single finger */
1124 if (SYN_CAP_PALMDETECT(priv->capabilities))
1125 finger_width = hw.w;
1134 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1135 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1139 * BTN_TOUCH has to be first as mousedev relies on it when doing
1140 * absolute -> relative conversion
1142 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1143 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1145 if (num_fingers > 0) {
1146 input_report_abs(dev, ABS_X, hw.x);
1147 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1149 input_report_abs(dev, ABS_PRESSURE, hw.z);
1151 if (SYN_CAP_PALMDETECT(priv->capabilities))
1152 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1154 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1155 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1156 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1157 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1160 synaptics_report_buttons(psmouse, &hw);
1165 static int synaptics_validate_byte(struct psmouse *psmouse,
1166 int idx, unsigned char pkt_type)
1168 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1169 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1170 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1171 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1172 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1173 const char *packet = psmouse->packet;
1175 if (idx < 0 || idx > 4)
1181 case SYN_NEWABS_RELAXED:
1182 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1184 case SYN_NEWABS_STRICT:
1185 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1188 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1191 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1196 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1200 for (i = 0; i < 5; i++)
1201 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1202 psmouse_info(psmouse, "using relaxed packet validation\n");
1203 return SYN_NEWABS_RELAXED;
1206 return SYN_NEWABS_STRICT;
1209 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1211 struct synaptics_data *priv = psmouse->private;
1213 if (psmouse->pktcnt >= 6) { /* Full packet received */
1214 if (unlikely(priv->pkt_type == SYN_NEWABS))
1215 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1217 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1218 synaptics_is_pt_packet(psmouse->packet)) {
1220 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1222 synaptics_process_packet(psmouse);
1224 return PSMOUSE_FULL_PACKET;
1227 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1228 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1231 /*****************************************************************************
1232 * Driver initialization/cleanup functions
1233 ****************************************************************************/
1234 static void set_abs_position_params(struct input_dev *dev,
1235 struct synaptics_data *priv, int x_code,
1238 int x_min = priv->x_min ?: XMIN_NOMINAL;
1239 int x_max = priv->x_max ?: XMAX_NOMINAL;
1240 int y_min = priv->y_min ?: YMIN_NOMINAL;
1241 int y_max = priv->y_max ?: YMAX_NOMINAL;
1242 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1243 SYN_REDUCED_FILTER_FUZZ : 0;
1245 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1246 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1247 input_abs_set_res(dev, x_code, priv->x_res);
1248 input_abs_set_res(dev, y_code, priv->y_res);
1251 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
1255 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1257 __set_bit(EV_ABS, dev->evbit);
1258 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1259 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1261 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1262 input_mt_init_slots(dev, 2);
1263 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1265 /* Image sensors can report per-contact pressure */
1266 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1268 /* Image sensors can signal 4 and 5 finger clicks */
1269 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1270 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1271 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1272 /* Non-image sensors with AGM use semi-mt */
1273 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1274 input_mt_init_slots(dev, 2);
1275 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1279 if (SYN_CAP_PALMDETECT(priv->capabilities))
1280 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1282 __set_bit(EV_KEY, dev->evbit);
1283 __set_bit(BTN_TOUCH, dev->keybit);
1284 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1285 __set_bit(BTN_LEFT, dev->keybit);
1286 __set_bit(BTN_RIGHT, dev->keybit);
1288 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1289 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1290 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1293 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1294 __set_bit(BTN_MIDDLE, dev->keybit);
1296 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1297 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1298 __set_bit(BTN_FORWARD, dev->keybit);
1299 __set_bit(BTN_BACK, dev->keybit);
1302 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1303 __set_bit(BTN_0 + i, dev->keybit);
1305 __clear_bit(EV_REL, dev->evbit);
1306 __clear_bit(REL_X, dev->relbit);
1307 __clear_bit(REL_Y, dev->relbit);
1309 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1310 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1311 /* Clickpads report only left button */
1312 __clear_bit(BTN_RIGHT, dev->keybit);
1313 __clear_bit(BTN_MIDDLE, dev->keybit);
1317 static void synaptics_disconnect(struct psmouse *psmouse)
1319 synaptics_reset(psmouse);
1320 kfree(psmouse->private);
1321 psmouse->private = NULL;
1324 static int synaptics_reconnect(struct psmouse *psmouse)
1326 struct synaptics_data *priv = psmouse->private;
1327 struct synaptics_data old_priv = *priv;
1332 psmouse_reset(psmouse);
1335 * On some boxes, right after resuming, the touchpad
1336 * needs some time to finish initializing (I assume
1337 * it needs time to calibrate) and start responding
1338 * to Synaptics-specific queries, so let's wait a
1343 error = synaptics_detect(psmouse, 0);
1344 } while (error && ++retry < 3);
1350 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1352 if (synaptics_query_hardware(psmouse)) {
1353 psmouse_err(psmouse, "Unable to query device.\n");
1357 if (synaptics_set_absolute_mode(psmouse)) {
1358 psmouse_err(psmouse, "Unable to initialize device.\n");
1362 if (synaptics_set_advanced_gesture_mode(psmouse)) {
1363 psmouse_err(psmouse,
1364 "Advanced gesture mode reconnect failed.\n");
1368 if (old_priv.identity != priv->identity ||
1369 old_priv.model_id != priv->model_id ||
1370 old_priv.capabilities != priv->capabilities ||
1371 old_priv.ext_cap != priv->ext_cap) {
1372 psmouse_err(psmouse,
1373 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1374 old_priv.identity, priv->identity,
1375 old_priv.model_id, priv->model_id,
1376 old_priv.capabilities, priv->capabilities,
1377 old_priv.ext_cap, priv->ext_cap);
1384 static bool impaired_toshiba_kbc;
1386 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
1387 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1389 /* Toshiba Satellite */
1391 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1392 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1396 /* Toshiba Dynabook */
1398 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1399 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1403 /* Toshiba Portege M300 */
1405 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1406 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1411 /* Toshiba Portege M300 */
1413 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1414 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1415 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1423 static bool broken_olpc_ec;
1425 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
1426 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1428 /* OLPC XO-1 or XO-1.5 */
1430 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1431 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1438 static const struct dmi_system_id min_max_dmi_table[] __initconst = {
1439 #if defined(CONFIG_DMI)
1441 /* Lenovo ThinkPad Helix */
1443 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1444 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Helix"),
1446 .driver_data = (int []){1024, 5052, 2258, 4832},
1449 /* Lenovo ThinkPad X240 */
1451 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1452 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X240"),
1454 .driver_data = (int []){1232, 5710, 1156, 4696},
1457 /* Lenovo ThinkPad Edge E431 */
1459 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1460 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Edge E431"),
1462 .driver_data = (int []){1024, 5022, 2508, 4832},
1465 /* Lenovo ThinkPad T431s */
1467 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1468 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T431"),
1470 .driver_data = (int []){1024, 5112, 2024, 4832},
1473 /* Lenovo ThinkPad T440s */
1475 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1476 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T440"),
1478 .driver_data = (int []){1024, 5112, 2024, 4832},
1481 /* Lenovo ThinkPad L440 */
1483 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1484 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L440"),
1486 .driver_data = (int []){1024, 5112, 2024, 4832},
1489 /* Lenovo ThinkPad T540p */
1491 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1492 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T540"),
1494 .driver_data = (int []){1024, 5112, 2024, 4832},
1497 /* Lenovo ThinkPad L540 */
1499 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1500 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L540"),
1502 .driver_data = (int []){1024, 5112, 2024, 4832},
1505 /* Lenovo ThinkPad W540 */
1507 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1508 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W540"),
1510 .driver_data = (int []){1024, 5112, 2024, 4832},
1513 /* Lenovo Yoga S1 */
1515 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1516 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
1517 "ThinkPad S1 Yoga"),
1519 .driver_data = (int []){1232, 5710, 1156, 4696},
1522 /* Lenovo ThinkPad X1 Carbon Haswell (3rd generation) */
1524 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1525 DMI_MATCH(DMI_PRODUCT_VERSION,
1526 "ThinkPad X1 Carbon 2nd"),
1528 .driver_data = (int []){1024, 5112, 2024, 4832},
1534 static const struct dmi_system_id forcepad_dmi_table[] __initconst = {
1535 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1538 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1539 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"),
1546 void __init synaptics_module_init(void)
1548 const struct dmi_system_id *min_max_dmi;
1550 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1551 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1553 min_max_dmi = dmi_first_match(min_max_dmi_table);
1555 quirk_min_max = min_max_dmi->driver_data;
1558 * Unfortunately ForcePad capability is not exported over PS/2,
1559 * so we have to resort to checking DMI.
1561 is_forcepad = dmi_check_system(forcepad_dmi_table);
1564 int synaptics_init(struct psmouse *psmouse)
1566 struct synaptics_data *priv;
1569 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
1570 * the HGPK, it quickly degrades and the hardware becomes jumpy and
1571 * overly sensitive. Not only that, but the constant packet spew
1572 * (even at a lowered 40pps rate) overloads the EC such that key
1573 * presses on the keyboard are missed. Given all of that, don't
1574 * even attempt to use Synaptics mode. Relative mode seems to work
1577 if (broken_olpc_ec) {
1578 psmouse_info(psmouse,
1579 "OLPC XO detected, not enabling Synaptics protocol.\n");
1583 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1587 psmouse_reset(psmouse);
1589 if (synaptics_query_hardware(psmouse)) {
1590 psmouse_err(psmouse, "Unable to query device.\n");
1594 if (synaptics_set_absolute_mode(psmouse)) {
1595 psmouse_err(psmouse, "Unable to initialize device.\n");
1599 if (synaptics_set_advanced_gesture_mode(psmouse)) {
1600 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
1604 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1606 psmouse_info(psmouse,
1607 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
1608 SYN_ID_MODEL(priv->identity),
1609 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1611 priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
1613 set_input_params(psmouse->dev, priv);
1616 * Encode touchpad model so that it can be used to set
1617 * input device->id.version and be visible to userspace.
1618 * Because version is __u16 we have to drop something.
1619 * Hardware info bits seem to be good candidates as they
1620 * are documented to be for Synaptics corp. internal use.
1622 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1623 (priv->model_id & 0x000000ff);
1625 psmouse->protocol_handler = synaptics_process_byte;
1626 psmouse->set_rate = synaptics_set_rate;
1627 psmouse->disconnect = synaptics_disconnect;
1628 psmouse->reconnect = synaptics_reconnect;
1629 psmouse->cleanup = synaptics_reset;
1630 psmouse->pktsize = 6;
1631 /* Synaptics can usually stay in sync without extra help */
1632 psmouse->resync_time = 0;
1634 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1635 synaptics_pt_create(psmouse);
1638 * Toshiba's KBC seems to have trouble handling data from
1639 * Synaptics at full rate. Switch to a lower rate (roughly
1640 * the same rate as a standard PS/2 mouse).
1642 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1643 psmouse_info(psmouse,
1644 "Toshiba %s detected, limiting rate to 40pps.\n",
1645 dmi_get_system_info(DMI_PRODUCT_NAME));
1656 bool synaptics_supported(void)
1661 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1663 void __init synaptics_module_init(void)
1667 int synaptics_init(struct psmouse *psmouse)
1672 bool synaptics_supported(void)
1677 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */