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_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 input_report_key(dev, BTN_LEFT, hw->left);
675 input_report_key(dev, BTN_RIGHT, hw->right);
677 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
678 input_report_key(dev, BTN_MIDDLE, hw->middle);
680 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
681 input_report_key(dev, BTN_FORWARD, hw->up);
682 input_report_key(dev, BTN_BACK, hw->down);
685 for (i = 0; i < ext_bits; i++) {
686 input_report_key(dev, BTN_0 + 2 * i,
687 hw->ext_buttons & (1 << i));
688 input_report_key(dev, BTN_1 + 2 * i,
689 hw->ext_buttons & (1 << (i + ext_bits)));
693 static void synaptics_report_slot(struct input_dev *dev, int slot,
694 const struct synaptics_hw_state *hw)
696 input_mt_slot(dev, slot);
697 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
701 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
702 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
703 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
706 static void synaptics_report_mt_data(struct psmouse *psmouse,
707 struct synaptics_mt_state *mt_state,
708 const struct synaptics_hw_state *sgm)
710 struct input_dev *dev = psmouse->dev;
711 struct synaptics_data *priv = psmouse->private;
712 struct synaptics_hw_state *agm = &priv->agm;
713 struct synaptics_mt_state *old = &priv->mt_state;
715 switch (mt_state->count) {
717 synaptics_report_slot(dev, 0, NULL);
718 synaptics_report_slot(dev, 1, NULL);
721 if (mt_state->sgm == -1) {
722 synaptics_report_slot(dev, 0, NULL);
723 synaptics_report_slot(dev, 1, NULL);
724 } else if (mt_state->sgm == 0) {
725 synaptics_report_slot(dev, 0, sgm);
726 synaptics_report_slot(dev, 1, NULL);
728 synaptics_report_slot(dev, 0, NULL);
729 synaptics_report_slot(dev, 1, sgm);
734 * If the finger slot contained in SGM is valid, and either
735 * hasn't changed, or is new, then report SGM in MTB slot 0.
736 * Otherwise, empty MTB slot 0.
738 if (mt_state->sgm != -1 &&
739 (mt_state->sgm == old->sgm || old->sgm == -1))
740 synaptics_report_slot(dev, 0, sgm);
742 synaptics_report_slot(dev, 0, NULL);
745 * If the finger slot contained in AGM is valid, and either
746 * hasn't changed, or is new, then report AGM in MTB slot 1.
747 * Otherwise, empty MTB slot 1.
749 if (mt_state->agm != -1 &&
750 (mt_state->agm == old->agm || old->agm == -1))
751 synaptics_report_slot(dev, 1, agm);
753 synaptics_report_slot(dev, 1, NULL);
757 /* Don't use active slot count to generate BTN_TOOL events. */
758 input_mt_report_pointer_emulation(dev, false);
760 /* Send the number of fingers reported by touchpad itself. */
761 input_mt_report_finger_count(dev, mt_state->count);
763 synaptics_report_buttons(psmouse, sgm);
768 /* Handle case where mt_state->count = 0 */
769 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
770 struct synaptics_mt_state *mt_state)
772 synaptics_mt_state_set(mt_state, 0, -1, -1);
773 priv->mt_state_lost = false;
776 /* Handle case where mt_state->count = 1 */
777 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
778 struct synaptics_mt_state *mt_state)
780 struct synaptics_hw_state *agm = &priv->agm;
781 struct synaptics_mt_state *old = &priv->mt_state;
784 * If the last AGM was (0,0,0), and there is only one finger left,
785 * then we absolutely know that SGM contains slot 0, and all other
786 * fingers have been removed.
788 if (priv->agm_pending && agm->z == 0) {
789 synaptics_mt_state_set(mt_state, 1, 0, -1);
790 priv->mt_state_lost = false;
794 switch (old->count) {
796 synaptics_mt_state_set(mt_state, 1, 0, -1);
800 * If mt_state_lost, then the previous transition was 3->1,
801 * and SGM now contains either slot 0 or 1, but we don't know
802 * which. So, we just assume that the SGM now contains slot 1.
804 * If pending AGM and either:
805 * (a) the previous SGM slot contains slot 0, or
806 * (b) there was no SGM slot
807 * then, the SGM now contains slot 1
809 * Case (a) happens with very rapid "drum roll" gestures, where
810 * slot 0 finger is lifted and a new slot 1 finger touches
811 * within one reporting interval.
813 * Case (b) happens if initially two or more fingers tap
814 * briefly, and all but one lift before the end of the first
815 * reporting interval.
817 * (In both these cases, slot 0 will becomes empty, so SGM
818 * contains slot 1 with the new finger)
820 * Else, if there was no previous SGM, it now contains slot 0.
822 * Otherwise, SGM still contains the same slot.
824 if (priv->mt_state_lost ||
825 (priv->agm_pending && old->sgm <= 0))
826 synaptics_mt_state_set(mt_state, 1, 1, -1);
827 else if (old->sgm == -1)
828 synaptics_mt_state_set(mt_state, 1, 0, -1);
832 * If mt_state_lost, we don't know which finger SGM contains.
834 * So, report 1 finger, but with both slots empty.
835 * We will use slot 1 on subsequent 1->1
837 if (priv->mt_state_lost) {
838 synaptics_mt_state_set(mt_state, 1, -1, -1);
842 * Since the last AGM was NOT (0,0,0), it was the finger in
843 * slot 0 that has been removed.
844 * So, SGM now contains previous AGM's slot, and AGM is now
847 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
851 * Since last AGM was not (0,0,0), we don't know which finger
854 * So, report 1 finger, but with both slots empty.
855 * We will use slot 1 on subsequent 1->1
857 synaptics_mt_state_set(mt_state, 1, -1, -1);
858 priv->mt_state_lost = true;
862 /* mt_state was updated by AGM-CONTACT packet */
867 /* Handle case where mt_state->count = 2 */
868 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
869 struct synaptics_mt_state *mt_state)
871 struct synaptics_mt_state *old = &priv->mt_state;
873 switch (old->count) {
875 synaptics_mt_state_set(mt_state, 2, 0, 1);
879 * If previous SGM contained slot 1 or higher, SGM now contains
880 * slot 0 (the newly touching finger) and AGM contains SGM's
883 * Otherwise, SGM still contains slot 0 and AGM now contains
887 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
889 synaptics_mt_state_set(mt_state, 2, 0, 1);
893 * If mt_state_lost, SGM now contains either finger 1 or 2, but
894 * we don't know which.
895 * So, we just assume that the SGM contains slot 0 and AGM 1.
897 if (priv->mt_state_lost)
898 synaptics_mt_state_set(mt_state, 2, 0, 1);
900 * Otherwise, use the same mt_state, since it either hasn't
901 * changed, or was updated by a recently received AGM-CONTACT
907 * 3->2 transitions have two unsolvable problems:
908 * 1) no indication is given which finger was removed
909 * 2) no way to tell if agm packet was for finger 3
910 * before 3->2, or finger 2 after 3->2.
912 * So, report 2 fingers, but empty all slots.
913 * We will guess slots [0,1] on subsequent 2->2.
915 synaptics_mt_state_set(mt_state, 2, -1, -1);
916 priv->mt_state_lost = true;
920 /* mt_state was updated by AGM-CONTACT packet */
925 /* Handle case where mt_state->count = 3 */
926 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
927 struct synaptics_mt_state *mt_state)
929 struct synaptics_mt_state *old = &priv->mt_state;
931 switch (old->count) {
933 synaptics_mt_state_set(mt_state, 3, 0, 2);
937 * If previous SGM contained slot 2 or higher, SGM now contains
938 * slot 0 (one of the newly touching fingers) and AGM contains
939 * SGM's previous slot.
941 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
944 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
946 synaptics_mt_state_set(mt_state, 3, 0, 2);
950 * If the AGM previously contained slot 3 or higher, then the
951 * newly touching finger is in the lowest available slot.
953 * If SGM was previously 1 or higher, then the new SGM is
954 * now slot 0 (with a new finger), otherwise, the new finger
955 * is now in a hidden slot between 0 and AGM's slot.
957 * In all such cases, the SGM now contains slot 0, and the AGM
958 * continues to contain the same slot as before.
961 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
966 * After some 3->1 and all 3->2 transitions, we lose track
967 * of which slot is reported by SGM and AGM.
969 * For 2->3 in this state, report 3 fingers, but empty all
970 * slots, and we will guess (0,2) on a subsequent 0->3.
972 * To userspace, the resulting transition will look like:
973 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
975 if (priv->mt_state_lost) {
976 synaptics_mt_state_set(mt_state, 3, -1, -1);
981 * If the (SGM,AGM) really previously contained slots (0, 1),
982 * then we cannot know what slot was just reported by the AGM,
983 * because the 2->3 transition can occur either before or after
984 * the AGM packet. Thus, this most recent AGM could contain
985 * either the same old slot 1 or the new slot 2.
986 * Subsequent AGMs will be reporting slot 2.
988 * To userspace, the resulting transition will look like:
989 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
991 synaptics_mt_state_set(mt_state, 3, 0, -1);
995 * If, for whatever reason, the previous agm was invalid,
996 * Assume SGM now contains slot 0, AGM now contains slot 2.
999 synaptics_mt_state_set(mt_state, 3, 0, 2);
1001 * mt_state either hasn't changed, or was updated by a recently
1002 * received AGM-CONTACT packet.
1008 /* mt_state was updated by AGM-CONTACT packet */
1013 /* Handle case where mt_state->count = 4, or = 5 */
1014 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1015 struct synaptics_mt_state *mt_state)
1017 /* mt_state was updated correctly by AGM-CONTACT packet */
1018 priv->mt_state_lost = false;
1021 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1022 struct synaptics_hw_state *sgm)
1024 struct synaptics_data *priv = psmouse->private;
1025 struct synaptics_hw_state *agm = &priv->agm;
1026 struct synaptics_mt_state mt_state;
1028 /* Initialize using current mt_state (as updated by last agm) */
1029 mt_state = agm->mt_state;
1032 * Update mt_state using the new finger count and current mt_state.
1035 synaptics_image_sensor_0f(priv, &mt_state);
1036 else if (sgm->w >= 4)
1037 synaptics_image_sensor_1f(priv, &mt_state);
1038 else if (sgm->w == 0)
1039 synaptics_image_sensor_2f(priv, &mt_state);
1040 else if (sgm->w == 1 && mt_state.count <= 3)
1041 synaptics_image_sensor_3f(priv, &mt_state);
1043 synaptics_image_sensor_45f(priv, &mt_state);
1045 /* Send resulting input events to user space */
1046 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1048 /* Store updated mt_state */
1049 priv->mt_state = agm->mt_state = mt_state;
1050 priv->agm_pending = false;
1054 * called for each full received packet from the touchpad
1056 static void synaptics_process_packet(struct psmouse *psmouse)
1058 struct input_dev *dev = psmouse->dev;
1059 struct synaptics_data *priv = psmouse->private;
1060 struct synaptics_hw_state hw;
1064 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1067 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1068 synaptics_image_sensor_process(psmouse, &hw);
1073 priv->scroll += hw.scroll;
1075 while (priv->scroll >= 4) {
1076 input_report_key(dev, BTN_BACK, !hw.down);
1078 input_report_key(dev, BTN_BACK, hw.down);
1082 while (priv->scroll <= -4) {
1083 input_report_key(dev, BTN_FORWARD, !hw.up);
1085 input_report_key(dev, BTN_FORWARD, hw.up);
1092 if (hw.z > 0 && hw.x > 1) {
1095 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1098 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1099 num_fingers = hw.w + 2;
1102 if (SYN_MODEL_PEN(priv->model_id))
1103 ; /* Nothing, treat a pen as a single finger */
1106 if (SYN_CAP_PALMDETECT(priv->capabilities))
1107 finger_width = hw.w;
1116 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1117 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1121 * BTN_TOUCH has to be first as mousedev relies on it when doing
1122 * absolute -> relative conversion
1124 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1125 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1127 if (num_fingers > 0) {
1128 input_report_abs(dev, ABS_X, hw.x);
1129 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1131 input_report_abs(dev, ABS_PRESSURE, hw.z);
1133 if (SYN_CAP_PALMDETECT(priv->capabilities))
1134 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1136 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1137 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1138 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1139 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1142 synaptics_report_buttons(psmouse, &hw);
1147 static int synaptics_validate_byte(struct psmouse *psmouse,
1148 int idx, unsigned char pkt_type)
1150 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1151 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1152 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1153 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1154 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1155 const char *packet = psmouse->packet;
1157 if (idx < 0 || idx > 4)
1163 case SYN_NEWABS_RELAXED:
1164 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1166 case SYN_NEWABS_STRICT:
1167 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1170 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1173 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1178 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1182 for (i = 0; i < 5; i++)
1183 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1184 psmouse_info(psmouse, "using relaxed packet validation\n");
1185 return SYN_NEWABS_RELAXED;
1188 return SYN_NEWABS_STRICT;
1191 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1193 struct synaptics_data *priv = psmouse->private;
1195 if (psmouse->pktcnt >= 6) { /* Full packet received */
1196 if (unlikely(priv->pkt_type == SYN_NEWABS))
1197 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1199 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1200 synaptics_is_pt_packet(psmouse->packet)) {
1202 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1204 synaptics_process_packet(psmouse);
1206 return PSMOUSE_FULL_PACKET;
1209 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1210 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1213 /*****************************************************************************
1214 * Driver initialization/cleanup functions
1215 ****************************************************************************/
1216 static void set_abs_position_params(struct input_dev *dev,
1217 struct synaptics_data *priv, int x_code,
1220 int x_min = priv->x_min ?: XMIN_NOMINAL;
1221 int x_max = priv->x_max ?: XMAX_NOMINAL;
1222 int y_min = priv->y_min ?: YMIN_NOMINAL;
1223 int y_max = priv->y_max ?: YMAX_NOMINAL;
1224 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1225 SYN_REDUCED_FILTER_FUZZ : 0;
1227 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1228 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1229 input_abs_set_res(dev, x_code, priv->x_res);
1230 input_abs_set_res(dev, y_code, priv->y_res);
1233 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
1237 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1239 __set_bit(EV_ABS, dev->evbit);
1240 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1241 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1243 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1244 input_mt_init_slots(dev, 2);
1245 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1247 /* Image sensors can report per-contact pressure */
1248 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1250 /* Image sensors can signal 4 and 5 finger clicks */
1251 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1252 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1253 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1254 /* Non-image sensors with AGM use semi-mt */
1255 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1256 input_mt_init_slots(dev, 2);
1257 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1261 if (SYN_CAP_PALMDETECT(priv->capabilities))
1262 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1264 __set_bit(EV_KEY, dev->evbit);
1265 __set_bit(BTN_TOUCH, dev->keybit);
1266 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1267 __set_bit(BTN_LEFT, dev->keybit);
1268 __set_bit(BTN_RIGHT, dev->keybit);
1270 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1271 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1272 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1275 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1276 __set_bit(BTN_MIDDLE, dev->keybit);
1278 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1279 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1280 __set_bit(BTN_FORWARD, dev->keybit);
1281 __set_bit(BTN_BACK, dev->keybit);
1284 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1285 __set_bit(BTN_0 + i, dev->keybit);
1287 __clear_bit(EV_REL, dev->evbit);
1288 __clear_bit(REL_X, dev->relbit);
1289 __clear_bit(REL_Y, dev->relbit);
1291 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1292 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1293 /* Clickpads report only left button */
1294 __clear_bit(BTN_RIGHT, dev->keybit);
1295 __clear_bit(BTN_MIDDLE, dev->keybit);
1299 static void synaptics_disconnect(struct psmouse *psmouse)
1301 synaptics_reset(psmouse);
1302 kfree(psmouse->private);
1303 psmouse->private = NULL;
1306 static int synaptics_reconnect(struct psmouse *psmouse)
1308 struct synaptics_data *priv = psmouse->private;
1309 struct synaptics_data old_priv = *priv;
1314 psmouse_reset(psmouse);
1317 * On some boxes, right after resuming, the touchpad
1318 * needs some time to finish initializing (I assume
1319 * it needs time to calibrate) and start responding
1320 * to Synaptics-specific queries, so let's wait a
1325 error = synaptics_detect(psmouse, 0);
1326 } while (error && ++retry < 3);
1332 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1334 if (synaptics_query_hardware(psmouse)) {
1335 psmouse_err(psmouse, "Unable to query device.\n");
1339 if (synaptics_set_absolute_mode(psmouse)) {
1340 psmouse_err(psmouse, "Unable to initialize device.\n");
1344 if (synaptics_set_advanced_gesture_mode(psmouse)) {
1345 psmouse_err(psmouse,
1346 "Advanced gesture mode reconnect failed.\n");
1350 if (old_priv.identity != priv->identity ||
1351 old_priv.model_id != priv->model_id ||
1352 old_priv.capabilities != priv->capabilities ||
1353 old_priv.ext_cap != priv->ext_cap) {
1354 psmouse_err(psmouse,
1355 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1356 old_priv.identity, priv->identity,
1357 old_priv.model_id, priv->model_id,
1358 old_priv.capabilities, priv->capabilities,
1359 old_priv.ext_cap, priv->ext_cap);
1366 static bool impaired_toshiba_kbc;
1368 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
1369 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1371 /* Toshiba Satellite */
1373 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1374 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1378 /* Toshiba Dynabook */
1380 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1381 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1385 /* Toshiba Portege M300 */
1387 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1388 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1393 /* Toshiba Portege M300 */
1395 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1396 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1397 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1405 static bool broken_olpc_ec;
1407 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
1408 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1410 /* OLPC XO-1 or XO-1.5 */
1412 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1413 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1420 static const struct dmi_system_id min_max_dmi_table[] __initconst = {
1421 #if defined(CONFIG_DMI)
1423 /* Lenovo ThinkPad Helix */
1425 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1426 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Helix"),
1428 .driver_data = (int []){1024, 5052, 2258, 4832},
1431 /* Lenovo ThinkPad X240 */
1433 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1434 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X240"),
1436 .driver_data = (int []){1232, 5710, 1156, 4696},
1439 /* Lenovo ThinkPad Edge E431 */
1441 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1442 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Edge E431"),
1444 .driver_data = (int []){1024, 5022, 2508, 4832},
1447 /* Lenovo ThinkPad T431s */
1449 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1450 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T431"),
1452 .driver_data = (int []){1024, 5112, 2024, 4832},
1455 /* Lenovo ThinkPad T440s */
1457 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1458 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T440"),
1460 .driver_data = (int []){1024, 5112, 2024, 4832},
1463 /* Lenovo ThinkPad L440 */
1465 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1466 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L440"),
1468 .driver_data = (int []){1024, 5112, 2024, 4832},
1471 /* Lenovo ThinkPad T540p */
1473 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1474 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T540"),
1476 .driver_data = (int []){1024, 5112, 2024, 4832},
1479 /* Lenovo ThinkPad L540 */
1481 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1482 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L540"),
1484 .driver_data = (int []){1024, 5112, 2024, 4832},
1487 /* Lenovo ThinkPad W540 */
1489 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1490 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W540"),
1492 .driver_data = (int []){1024, 5112, 2024, 4832},
1495 /* Lenovo Yoga S1 */
1497 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1498 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
1499 "ThinkPad S1 Yoga"),
1501 .driver_data = (int []){1232, 5710, 1156, 4696},
1504 /* Lenovo ThinkPad X1 Carbon Haswell (3rd generation) */
1506 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1507 DMI_MATCH(DMI_PRODUCT_VERSION,
1508 "ThinkPad X1 Carbon 2nd"),
1510 .driver_data = (int []){1024, 5112, 2024, 4832},
1516 static const struct dmi_system_id forcepad_dmi_table[] __initconst = {
1517 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1520 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1521 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"),
1528 void __init synaptics_module_init(void)
1530 const struct dmi_system_id *min_max_dmi;
1532 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1533 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1535 min_max_dmi = dmi_first_match(min_max_dmi_table);
1537 quirk_min_max = min_max_dmi->driver_data;
1540 * Unfortunately ForcePad capability is not exported over PS/2,
1541 * so we have to resort to checking DMI.
1543 is_forcepad = dmi_check_system(forcepad_dmi_table);
1546 int synaptics_init(struct psmouse *psmouse)
1548 struct synaptics_data *priv;
1551 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
1552 * the HGPK, it quickly degrades and the hardware becomes jumpy and
1553 * overly sensitive. Not only that, but the constant packet spew
1554 * (even at a lowered 40pps rate) overloads the EC such that key
1555 * presses on the keyboard are missed. Given all of that, don't
1556 * even attempt to use Synaptics mode. Relative mode seems to work
1559 if (broken_olpc_ec) {
1560 psmouse_info(psmouse,
1561 "OLPC XO detected, not enabling Synaptics protocol.\n");
1565 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1569 psmouse_reset(psmouse);
1571 if (synaptics_query_hardware(psmouse)) {
1572 psmouse_err(psmouse, "Unable to query device.\n");
1576 if (synaptics_set_absolute_mode(psmouse)) {
1577 psmouse_err(psmouse, "Unable to initialize device.\n");
1581 if (synaptics_set_advanced_gesture_mode(psmouse)) {
1582 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
1586 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1588 psmouse_info(psmouse,
1589 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
1590 SYN_ID_MODEL(priv->identity),
1591 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1593 priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
1595 set_input_params(psmouse->dev, priv);
1598 * Encode touchpad model so that it can be used to set
1599 * input device->id.version and be visible to userspace.
1600 * Because version is __u16 we have to drop something.
1601 * Hardware info bits seem to be good candidates as they
1602 * are documented to be for Synaptics corp. internal use.
1604 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1605 (priv->model_id & 0x000000ff);
1607 psmouse->protocol_handler = synaptics_process_byte;
1608 psmouse->set_rate = synaptics_set_rate;
1609 psmouse->disconnect = synaptics_disconnect;
1610 psmouse->reconnect = synaptics_reconnect;
1611 psmouse->cleanup = synaptics_reset;
1612 psmouse->pktsize = 6;
1613 /* Synaptics can usually stay in sync without extra help */
1614 psmouse->resync_time = 0;
1616 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1617 synaptics_pt_create(psmouse);
1620 * Toshiba's KBC seems to have trouble handling data from
1621 * Synaptics at full rate. Switch to a lower rate (roughly
1622 * the same rate as a standard PS/2 mouse).
1624 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1625 psmouse_info(psmouse,
1626 "Toshiba %s detected, limiting rate to 40pps.\n",
1627 dmi_get_system_info(DMI_PRODUCT_NAME));
1638 bool synaptics_supported(void)
1643 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1645 void __init synaptics_module_init(void)
1649 int synaptics_init(struct psmouse *psmouse)
1654 bool synaptics_supported(void)
1659 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */