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
120 /* This list has been kindly provided by Synaptics. */
121 static const char * const topbuttonpad_pnp_ids[] = {
131 "LEN0033", /* Helix */
132 "LEN0034", /* T431s, T540, X1 Carbon 2nd */
133 "LEN0035", /* X240 */
134 "LEN0036", /* T440 */
138 "LEN0042", /* Yoga */
148 "LEN2004", /* L440 */
159 /*****************************************************************************
160 * Synaptics communications functions
161 ****************************************************************************/
164 * Synaptics touchpads report the y coordinate from bottom to top, which is
165 * opposite from what userspace expects.
166 * This function is used to invert y before reporting.
168 static int synaptics_invert_y(int y)
170 return YMAX_NOMINAL + YMIN_NOMINAL - y;
174 * Send a command to the synpatics touchpad by special commands
176 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
178 if (psmouse_sliced_command(psmouse, c))
180 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
186 * Read the model-id bytes from the touchpad
187 * see also SYN_MODEL_* macros
189 static int synaptics_model_id(struct psmouse *psmouse)
191 struct synaptics_data *priv = psmouse->private;
194 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
196 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
201 * Read the board id from the touchpad
202 * The board id is encoded in the "QUERY MODES" response
204 static int synaptics_board_id(struct psmouse *psmouse)
206 struct synaptics_data *priv = psmouse->private;
207 unsigned char bid[3];
209 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
211 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
216 * Read the firmware id from the touchpad
218 static int synaptics_firmware_id(struct psmouse *psmouse)
220 struct synaptics_data *priv = psmouse->private;
221 unsigned char fwid[3];
223 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
225 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
230 * Read the capability-bits from the touchpad
231 * see also the SYN_CAP_* macros
233 static int synaptics_capability(struct psmouse *psmouse)
235 struct synaptics_data *priv = psmouse->private;
236 unsigned char cap[3];
238 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
240 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
241 priv->ext_cap = priv->ext_cap_0c = 0;
244 * Older firmwares had submodel ID fixed to 0x47
246 if (SYN_ID_FULL(priv->identity) < 0x705 &&
247 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
252 * Unless capExtended is set the rest of the flags should be ignored
254 if (!SYN_CAP_EXTENDED(priv->capabilities))
255 priv->capabilities = 0;
257 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
258 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
259 psmouse_warn(psmouse,
260 "device claims to have extended capabilities, but I'm not able to read them.\n");
262 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
265 * if nExtBtn is greater than 8 it should be considered
266 * invalid and treated as 0
268 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
269 priv->ext_cap &= 0xff0fff;
273 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
274 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
275 psmouse_warn(psmouse,
276 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
278 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
287 * See also the SYN_ID_* macros
289 static int synaptics_identify(struct psmouse *psmouse)
291 struct synaptics_data *priv = psmouse->private;
294 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
296 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
297 if (SYN_ID_IS_SYNAPTICS(priv->identity))
303 * Read touchpad resolution and maximum reported coordinates
304 * Resolution is left zero if touchpad does not support the query
307 static const int *quirk_min_max;
309 static int synaptics_resolution(struct psmouse *psmouse)
311 struct synaptics_data *priv = psmouse->private;
312 unsigned char resp[3];
315 priv->x_min = quirk_min_max[0];
316 priv->x_max = quirk_min_max[1];
317 priv->y_min = quirk_min_max[2];
318 priv->y_max = quirk_min_max[3];
322 if (SYN_ID_MAJOR(priv->identity) < 4)
325 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
326 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
327 priv->x_res = resp[0]; /* x resolution in units/mm */
328 priv->y_res = resp[2]; /* y resolution in units/mm */
332 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
333 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
334 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
335 psmouse_warn(psmouse,
336 "device claims to have max coordinates query, but I'm not able to read it.\n");
338 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
339 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
343 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
344 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
345 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
346 psmouse_warn(psmouse,
347 "device claims to have min coordinates query, but I'm not able to read it.\n");
349 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
350 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
357 static int synaptics_query_hardware(struct psmouse *psmouse)
359 if (synaptics_identify(psmouse))
361 if (synaptics_model_id(psmouse))
363 if (synaptics_firmware_id(psmouse))
365 if (synaptics_board_id(psmouse))
367 if (synaptics_capability(psmouse))
369 if (synaptics_resolution(psmouse))
375 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
377 static unsigned char param = 0xc8;
378 struct synaptics_data *priv = psmouse->private;
380 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
381 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
384 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
387 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
390 /* Advanced gesture mode also sends multi finger data */
391 priv->capabilities |= BIT(1);
396 static int synaptics_set_mode(struct psmouse *psmouse)
398 struct synaptics_data *priv = psmouse->private;
401 if (priv->absolute_mode)
402 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
403 if (priv->disable_gesture)
404 priv->mode |= SYN_BIT_DISABLE_GESTURE;
405 if (psmouse->rate >= 80)
406 priv->mode |= SYN_BIT_HIGH_RATE;
407 if (SYN_CAP_EXTENDED(priv->capabilities))
408 priv->mode |= SYN_BIT_W_MODE;
410 if (synaptics_mode_cmd(psmouse, priv->mode))
413 if (priv->absolute_mode &&
414 synaptics_set_advanced_gesture_mode(psmouse)) {
415 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
422 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
424 struct synaptics_data *priv = psmouse->private;
427 priv->mode |= SYN_BIT_HIGH_RATE;
430 priv->mode &= ~SYN_BIT_HIGH_RATE;
434 synaptics_mode_cmd(psmouse, priv->mode);
437 /*****************************************************************************
438 * Synaptics pass-through PS/2 port support
439 ****************************************************************************/
440 static int synaptics_pt_write(struct serio *serio, unsigned char c)
442 struct psmouse *parent = serio_get_drvdata(serio->parent);
443 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
445 if (psmouse_sliced_command(parent, c))
447 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
452 static int synaptics_pt_start(struct serio *serio)
454 struct psmouse *parent = serio_get_drvdata(serio->parent);
455 struct synaptics_data *priv = parent->private;
457 serio_pause_rx(parent->ps2dev.serio);
458 priv->pt_port = serio;
459 serio_continue_rx(parent->ps2dev.serio);
464 static void synaptics_pt_stop(struct serio *serio)
466 struct psmouse *parent = serio_get_drvdata(serio->parent);
467 struct synaptics_data *priv = parent->private;
469 serio_pause_rx(parent->ps2dev.serio);
470 priv->pt_port = NULL;
471 serio_continue_rx(parent->ps2dev.serio);
474 static int synaptics_is_pt_packet(unsigned char *buf)
476 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
479 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
481 struct psmouse *child = serio_get_drvdata(ptport);
483 if (child && child->state == PSMOUSE_ACTIVATED) {
484 serio_interrupt(ptport, packet[1], 0);
485 serio_interrupt(ptport, packet[4], 0);
486 serio_interrupt(ptport, packet[5], 0);
487 if (child->pktsize == 4)
488 serio_interrupt(ptport, packet[2], 0);
490 serio_interrupt(ptport, packet[1], 0);
493 static void synaptics_pt_activate(struct psmouse *psmouse)
495 struct synaptics_data *priv = psmouse->private;
496 struct psmouse *child = serio_get_drvdata(priv->pt_port);
498 /* adjust the touchpad to child's choice of protocol */
500 if (child->pktsize == 4)
501 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
503 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
505 if (synaptics_mode_cmd(psmouse, priv->mode))
506 psmouse_warn(psmouse,
507 "failed to switch guest protocol\n");
511 static void synaptics_pt_create(struct psmouse *psmouse)
515 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
518 "not enough memory for pass-through port\n");
522 serio->id.type = SERIO_PS_PSTHRU;
523 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
524 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
525 serio->write = synaptics_pt_write;
526 serio->start = synaptics_pt_start;
527 serio->stop = synaptics_pt_stop;
528 serio->parent = psmouse->ps2dev.serio;
530 psmouse->pt_activate = synaptics_pt_activate;
532 psmouse_info(psmouse, "serio: %s port at %s\n",
533 serio->name, psmouse->phys);
534 serio_register_port(serio);
537 /*****************************************************************************
538 * Functions to interpret the absolute mode packets
539 ****************************************************************************/
541 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
544 state->count = count;
549 static void synaptics_parse_agm(const unsigned char buf[],
550 struct synaptics_data *priv,
551 struct synaptics_hw_state *hw)
553 struct synaptics_hw_state *agm = &priv->agm;
556 agm_packet_type = (buf[5] & 0x30) >> 4;
557 switch (agm_packet_type) {
559 /* Gesture packet: (x, y, z) half resolution */
561 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
562 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
563 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
567 /* AGM-CONTACT packet: (count, sgm, agm) */
568 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
575 /* Record that at least one AGM has been received since last SGM */
576 priv->agm_pending = true;
579 static int synaptics_parse_hw_state(const unsigned char buf[],
580 struct synaptics_data *priv,
581 struct synaptics_hw_state *hw)
583 memset(hw, 0, sizeof(struct synaptics_hw_state));
585 if (SYN_MODEL_NEWABS(priv->model_id)) {
586 hw->w = (((buf[0] & 0x30) >> 2) |
587 ((buf[0] & 0x04) >> 1) |
588 ((buf[3] & 0x04) >> 2));
590 hw->left = (buf[0] & 0x01) ? 1 : 0;
591 hw->right = (buf[0] & 0x02) ? 1 : 0;
593 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
595 * Clickpad's button is transmitted as middle button,
596 * however, since it is primary button, we will report
599 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
601 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
602 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
604 hw->scroll = (signed char)(buf[1]);
607 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
608 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
609 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
612 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
613 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
615 synaptics_parse_agm(buf, priv, hw);
619 hw->x = (((buf[3] & 0x10) << 8) |
620 ((buf[1] & 0x0f) << 8) |
622 hw->y = (((buf[3] & 0x20) << 7) |
623 ((buf[1] & 0xf0) << 4) |
627 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
628 ((buf[0] ^ buf[3]) & 0x02)) {
629 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
632 * if nExtBtn is greater than 8 it should be
633 * considered invalid and treated as 0
637 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
638 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
640 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
641 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
643 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
644 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
646 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
647 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
651 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
652 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
654 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
655 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
657 hw->left = (buf[0] & 0x01) ? 1 : 0;
658 hw->right = (buf[0] & 0x02) ? 1 : 0;
662 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
663 * is used by some firmware to indicate a finger at the edge of
664 * the touchpad whose precise position cannot be determined, so
665 * convert these values to the maximum axis value.
667 if (hw->x > X_MAX_POSITIVE)
668 hw->x -= 1 << ABS_POS_BITS;
669 else if (hw->x == X_MAX_POSITIVE)
672 if (hw->y > Y_MAX_POSITIVE)
673 hw->y -= 1 << ABS_POS_BITS;
674 else if (hw->y == Y_MAX_POSITIVE)
680 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
681 bool active, int x, int y)
683 input_mt_slot(dev, slot);
684 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
686 input_report_abs(dev, ABS_MT_POSITION_X, x);
687 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
691 static void synaptics_report_semi_mt_data(struct input_dev *dev,
692 const struct synaptics_hw_state *a,
693 const struct synaptics_hw_state *b,
696 if (num_fingers >= 2) {
697 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
699 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
701 } else if (num_fingers == 1) {
702 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
703 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
705 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
706 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
710 static void synaptics_report_buttons(struct psmouse *psmouse,
711 const struct synaptics_hw_state *hw)
713 struct input_dev *dev = psmouse->dev;
714 struct synaptics_data *priv = psmouse->private;
717 input_report_key(dev, BTN_LEFT, hw->left);
718 input_report_key(dev, BTN_RIGHT, hw->right);
720 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
721 input_report_key(dev, BTN_MIDDLE, hw->middle);
723 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
724 input_report_key(dev, BTN_FORWARD, hw->up);
725 input_report_key(dev, BTN_BACK, hw->down);
728 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
729 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
732 static void synaptics_report_slot(struct input_dev *dev, int slot,
733 const struct synaptics_hw_state *hw)
735 input_mt_slot(dev, slot);
736 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
740 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
741 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
742 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
745 static void synaptics_report_mt_data(struct psmouse *psmouse,
746 struct synaptics_mt_state *mt_state,
747 const struct synaptics_hw_state *sgm)
749 struct input_dev *dev = psmouse->dev;
750 struct synaptics_data *priv = psmouse->private;
751 struct synaptics_hw_state *agm = &priv->agm;
752 struct synaptics_mt_state *old = &priv->mt_state;
754 switch (mt_state->count) {
756 synaptics_report_slot(dev, 0, NULL);
757 synaptics_report_slot(dev, 1, NULL);
760 if (mt_state->sgm == -1) {
761 synaptics_report_slot(dev, 0, NULL);
762 synaptics_report_slot(dev, 1, NULL);
763 } else if (mt_state->sgm == 0) {
764 synaptics_report_slot(dev, 0, sgm);
765 synaptics_report_slot(dev, 1, NULL);
767 synaptics_report_slot(dev, 0, NULL);
768 synaptics_report_slot(dev, 1, sgm);
773 * If the finger slot contained in SGM is valid, and either
774 * hasn't changed, or is new, or the old SGM has now moved to
775 * AGM, then report SGM in MTB slot 0.
776 * Otherwise, empty MTB slot 0.
778 if (mt_state->sgm != -1 &&
779 (mt_state->sgm == old->sgm ||
780 old->sgm == -1 || mt_state->agm == old->sgm))
781 synaptics_report_slot(dev, 0, sgm);
783 synaptics_report_slot(dev, 0, NULL);
786 * If the finger slot contained in AGM is valid, and either
787 * hasn't changed, or is new, then report AGM in MTB slot 1.
788 * Otherwise, empty MTB slot 1.
790 * However, in the case where the AGM is new, make sure that
791 * that it is either the same as the old SGM, or there was no
794 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
795 * the new AGM will keep the old SGM's tracking ID, which can
796 * cause apparent drumroll. This happens if in the following
797 * valid finger sequence:
799 * Action SGM AGM (MTB slot:Contact)
800 * 1. Touch contact 0 (0:0)
801 * 2. Touch contact 1 (0:0, 1:1)
802 * 3. Lift contact 0 (1:1)
803 * 4. Touch contacts 2,3 (0:2, 1:3)
805 * In step 4, contact 3, in AGM must not be given the same
806 * tracking ID as contact 1 had in step 3. To avoid this,
807 * the first agm with contact 3 is dropped and slot 1 is
808 * invalidated (tracking ID = -1).
810 if (mt_state->agm != -1 &&
811 (mt_state->agm == old->agm ||
813 (old->sgm == -1 || mt_state->agm == old->sgm))))
814 synaptics_report_slot(dev, 1, agm);
816 synaptics_report_slot(dev, 1, NULL);
820 /* Don't use active slot count to generate BTN_TOOL events. */
821 input_mt_report_pointer_emulation(dev, false);
823 /* Send the number of fingers reported by touchpad itself. */
824 input_mt_report_finger_count(dev, mt_state->count);
826 synaptics_report_buttons(psmouse, sgm);
831 /* Handle case where mt_state->count = 0 */
832 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
833 struct synaptics_mt_state *mt_state)
835 synaptics_mt_state_set(mt_state, 0, -1, -1);
836 priv->mt_state_lost = false;
839 /* Handle case where mt_state->count = 1 */
840 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
841 struct synaptics_mt_state *mt_state)
843 struct synaptics_hw_state *agm = &priv->agm;
844 struct synaptics_mt_state *old = &priv->mt_state;
847 * If the last AGM was (0,0,0), and there is only one finger left,
848 * then we absolutely know that SGM contains slot 0, and all other
849 * fingers have been removed.
851 if (priv->agm_pending && agm->z == 0) {
852 synaptics_mt_state_set(mt_state, 1, 0, -1);
853 priv->mt_state_lost = false;
857 switch (old->count) {
859 synaptics_mt_state_set(mt_state, 1, 0, -1);
863 * If mt_state_lost, then the previous transition was 3->1,
864 * and SGM now contains either slot 0 or 1, but we don't know
865 * which. So, we just assume that the SGM now contains slot 1.
867 * If pending AGM and either:
868 * (a) the previous SGM slot contains slot 0, or
869 * (b) there was no SGM slot
870 * then, the SGM now contains slot 1
872 * Case (a) happens with very rapid "drum roll" gestures, where
873 * slot 0 finger is lifted and a new slot 1 finger touches
874 * within one reporting interval.
876 * Case (b) happens if initially two or more fingers tap
877 * briefly, and all but one lift before the end of the first
878 * reporting interval.
880 * (In both these cases, slot 0 will becomes empty, so SGM
881 * contains slot 1 with the new finger)
883 * Else, if there was no previous SGM, it now contains slot 0.
885 * Otherwise, SGM still contains the same slot.
887 if (priv->mt_state_lost ||
888 (priv->agm_pending && old->sgm <= 0))
889 synaptics_mt_state_set(mt_state, 1, 1, -1);
890 else if (old->sgm == -1)
891 synaptics_mt_state_set(mt_state, 1, 0, -1);
895 * If mt_state_lost, we don't know which finger SGM contains.
897 * So, report 1 finger, but with both slots empty.
898 * We will use slot 1 on subsequent 1->1
900 if (priv->mt_state_lost) {
901 synaptics_mt_state_set(mt_state, 1, -1, -1);
905 * Since the last AGM was NOT (0,0,0), it was the finger in
906 * slot 0 that has been removed.
907 * So, SGM now contains previous AGM's slot, and AGM is now
910 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
914 * Since last AGM was not (0,0,0), we don't know which finger
917 * So, report 1 finger, but with both slots empty.
918 * We will use slot 1 on subsequent 1->1
920 synaptics_mt_state_set(mt_state, 1, -1, -1);
921 priv->mt_state_lost = true;
925 /* mt_state was updated by AGM-CONTACT packet */
930 /* Handle case where mt_state->count = 2 */
931 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
932 struct synaptics_mt_state *mt_state)
934 struct synaptics_mt_state *old = &priv->mt_state;
936 switch (old->count) {
938 synaptics_mt_state_set(mt_state, 2, 0, 1);
942 * If previous SGM contained slot 1 or higher, SGM now contains
943 * slot 0 (the newly touching finger) and AGM contains SGM's
946 * Otherwise, SGM still contains slot 0 and AGM now contains
950 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
952 synaptics_mt_state_set(mt_state, 2, 0, 1);
956 * If mt_state_lost, SGM now contains either finger 1 or 2, but
957 * we don't know which.
958 * So, we just assume that the SGM contains slot 0 and AGM 1.
960 if (priv->mt_state_lost)
961 synaptics_mt_state_set(mt_state, 2, 0, 1);
963 * Otherwise, use the same mt_state, since it either hasn't
964 * changed, or was updated by a recently received AGM-CONTACT
970 * 3->2 transitions have two unsolvable problems:
971 * 1) no indication is given which finger was removed
972 * 2) no way to tell if agm packet was for finger 3
973 * before 3->2, or finger 2 after 3->2.
975 * So, report 2 fingers, but empty all slots.
976 * We will guess slots [0,1] on subsequent 2->2.
978 synaptics_mt_state_set(mt_state, 2, -1, -1);
979 priv->mt_state_lost = true;
983 /* mt_state was updated by AGM-CONTACT packet */
988 /* Handle case where mt_state->count = 3 */
989 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
990 struct synaptics_mt_state *mt_state)
992 struct synaptics_mt_state *old = &priv->mt_state;
994 switch (old->count) {
996 synaptics_mt_state_set(mt_state, 3, 0, 2);
1000 * If previous SGM contained slot 2 or higher, SGM now contains
1001 * slot 0 (one of the newly touching fingers) and AGM contains
1002 * SGM's previous slot.
1004 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1007 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1009 synaptics_mt_state_set(mt_state, 3, 0, 2);
1013 * If the AGM previously contained slot 3 or higher, then the
1014 * newly touching finger is in the lowest available slot.
1016 * If SGM was previously 1 or higher, then the new SGM is
1017 * now slot 0 (with a new finger), otherwise, the new finger
1018 * is now in a hidden slot between 0 and AGM's slot.
1020 * In all such cases, the SGM now contains slot 0, and the AGM
1021 * continues to contain the same slot as before.
1023 if (old->agm >= 3) {
1024 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1029 * After some 3->1 and all 3->2 transitions, we lose track
1030 * of which slot is reported by SGM and AGM.
1032 * For 2->3 in this state, report 3 fingers, but empty all
1033 * slots, and we will guess (0,2) on a subsequent 0->3.
1035 * To userspace, the resulting transition will look like:
1036 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1038 if (priv->mt_state_lost) {
1039 synaptics_mt_state_set(mt_state, 3, -1, -1);
1044 * If the (SGM,AGM) really previously contained slots (0, 1),
1045 * then we cannot know what slot was just reported by the AGM,
1046 * because the 2->3 transition can occur either before or after
1047 * the AGM packet. Thus, this most recent AGM could contain
1048 * either the same old slot 1 or the new slot 2.
1049 * Subsequent AGMs will be reporting slot 2.
1051 * To userspace, the resulting transition will look like:
1052 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1054 synaptics_mt_state_set(mt_state, 3, 0, -1);
1058 * If, for whatever reason, the previous agm was invalid,
1059 * Assume SGM now contains slot 0, AGM now contains slot 2.
1062 synaptics_mt_state_set(mt_state, 3, 0, 2);
1064 * mt_state either hasn't changed, or was updated by a recently
1065 * received AGM-CONTACT packet.
1071 /* mt_state was updated by AGM-CONTACT packet */
1076 /* Handle case where mt_state->count = 4, or = 5 */
1077 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1078 struct synaptics_mt_state *mt_state)
1080 /* mt_state was updated correctly by AGM-CONTACT packet */
1081 priv->mt_state_lost = false;
1084 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1085 struct synaptics_hw_state *sgm)
1087 struct synaptics_data *priv = psmouse->private;
1088 struct synaptics_hw_state *agm = &priv->agm;
1089 struct synaptics_mt_state mt_state;
1091 /* Initialize using current mt_state (as updated by last agm) */
1092 mt_state = agm->mt_state;
1095 * Update mt_state using the new finger count and current mt_state.
1098 synaptics_image_sensor_0f(priv, &mt_state);
1099 else if (sgm->w >= 4)
1100 synaptics_image_sensor_1f(priv, &mt_state);
1101 else if (sgm->w == 0)
1102 synaptics_image_sensor_2f(priv, &mt_state);
1103 else if (sgm->w == 1 && mt_state.count <= 3)
1104 synaptics_image_sensor_3f(priv, &mt_state);
1106 synaptics_image_sensor_45f(priv, &mt_state);
1108 /* Send resulting input events to user space */
1109 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1111 /* Store updated mt_state */
1112 priv->mt_state = agm->mt_state = mt_state;
1113 priv->agm_pending = false;
1117 * called for each full received packet from the touchpad
1119 static void synaptics_process_packet(struct psmouse *psmouse)
1121 struct input_dev *dev = psmouse->dev;
1122 struct synaptics_data *priv = psmouse->private;
1123 struct synaptics_hw_state hw;
1127 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1130 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1131 synaptics_image_sensor_process(psmouse, &hw);
1136 priv->scroll += hw.scroll;
1138 while (priv->scroll >= 4) {
1139 input_report_key(dev, BTN_BACK, !hw.down);
1141 input_report_key(dev, BTN_BACK, hw.down);
1145 while (priv->scroll <= -4) {
1146 input_report_key(dev, BTN_FORWARD, !hw.up);
1148 input_report_key(dev, BTN_FORWARD, hw.up);
1155 if (hw.z > 0 && hw.x > 1) {
1158 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1161 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1162 num_fingers = hw.w + 2;
1165 if (SYN_MODEL_PEN(priv->model_id))
1166 ; /* Nothing, treat a pen as a single finger */
1169 if (SYN_CAP_PALMDETECT(priv->capabilities))
1170 finger_width = hw.w;
1179 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1180 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1184 * BTN_TOUCH has to be first as mousedev relies on it when doing
1185 * absolute -> relative conversion
1187 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1188 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1190 if (num_fingers > 0) {
1191 input_report_abs(dev, ABS_X, hw.x);
1192 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1194 input_report_abs(dev, ABS_PRESSURE, hw.z);
1196 if (SYN_CAP_PALMDETECT(priv->capabilities))
1197 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1199 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1200 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1201 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1202 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1205 synaptics_report_buttons(psmouse, &hw);
1210 static int synaptics_validate_byte(struct psmouse *psmouse,
1211 int idx, unsigned char pkt_type)
1213 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1214 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1215 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1216 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1217 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1218 const char *packet = psmouse->packet;
1220 if (idx < 0 || idx > 4)
1226 case SYN_NEWABS_RELAXED:
1227 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1229 case SYN_NEWABS_STRICT:
1230 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1233 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1236 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1241 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1245 for (i = 0; i < 5; i++)
1246 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1247 psmouse_info(psmouse, "using relaxed packet validation\n");
1248 return SYN_NEWABS_RELAXED;
1251 return SYN_NEWABS_STRICT;
1254 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1256 struct synaptics_data *priv = psmouse->private;
1258 if (psmouse->pktcnt >= 6) { /* Full packet received */
1259 if (unlikely(priv->pkt_type == SYN_NEWABS))
1260 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1262 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1263 synaptics_is_pt_packet(psmouse->packet)) {
1265 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1267 synaptics_process_packet(psmouse);
1269 return PSMOUSE_FULL_PACKET;
1272 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1273 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1276 /*****************************************************************************
1277 * Driver initialization/cleanup functions
1278 ****************************************************************************/
1279 static void set_abs_position_params(struct input_dev *dev,
1280 struct synaptics_data *priv, int x_code,
1283 int x_min = priv->x_min ?: XMIN_NOMINAL;
1284 int x_max = priv->x_max ?: XMAX_NOMINAL;
1285 int y_min = priv->y_min ?: YMIN_NOMINAL;
1286 int y_max = priv->y_max ?: YMAX_NOMINAL;
1287 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1288 SYN_REDUCED_FILTER_FUZZ : 0;
1290 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1291 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1292 input_abs_set_res(dev, x_code, priv->x_res);
1293 input_abs_set_res(dev, y_code, priv->y_res);
1296 static void set_input_params(struct psmouse *psmouse,
1297 struct synaptics_data *priv)
1299 struct input_dev *dev = psmouse->dev;
1302 /* Things that apply to both modes */
1303 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1304 __set_bit(EV_KEY, dev->evbit);
1305 __set_bit(BTN_LEFT, dev->keybit);
1306 __set_bit(BTN_RIGHT, dev->keybit);
1308 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1309 __set_bit(BTN_MIDDLE, dev->keybit);
1311 if (!priv->absolute_mode) {
1313 __set_bit(EV_REL, dev->evbit);
1314 __set_bit(REL_X, dev->relbit);
1315 __set_bit(REL_Y, dev->relbit);
1320 __set_bit(EV_ABS, dev->evbit);
1321 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1322 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1324 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1325 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1327 /* Image sensors can report per-contact pressure */
1328 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1329 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1331 /* Image sensors can signal 4 and 5 finger clicks */
1332 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1333 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1334 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1335 /* Non-image sensors with AGM use semi-mt */
1336 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1337 input_mt_init_slots(dev, 2, 0);
1338 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1342 if (SYN_CAP_PALMDETECT(priv->capabilities))
1343 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1345 __set_bit(BTN_TOUCH, dev->keybit);
1346 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1348 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1349 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1350 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1353 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1354 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1355 __set_bit(BTN_FORWARD, dev->keybit);
1356 __set_bit(BTN_BACK, dev->keybit);
1359 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1360 __set_bit(BTN_0 + i, dev->keybit);
1362 __clear_bit(EV_REL, dev->evbit);
1363 __clear_bit(REL_X, dev->relbit);
1364 __clear_bit(REL_Y, dev->relbit);
1366 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1367 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1368 /* See if this buttonpad has a top button area */
1369 if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) {
1370 for (i = 0; topbuttonpad_pnp_ids[i]; i++) {
1371 if (strstr(psmouse->ps2dev.serio->firmware_id,
1372 topbuttonpad_pnp_ids[i])) {
1373 __set_bit(INPUT_PROP_TOPBUTTONPAD,
1379 /* Clickpads report only left button */
1380 __clear_bit(BTN_RIGHT, dev->keybit);
1381 __clear_bit(BTN_MIDDLE, dev->keybit);
1385 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1386 void *data, char *buf)
1388 struct synaptics_data *priv = psmouse->private;
1390 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1393 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1394 void *data, const char *buf,
1397 struct synaptics_data *priv = psmouse->private;
1401 err = kstrtouint(buf, 10, &value);
1408 if (value == priv->disable_gesture)
1411 priv->disable_gesture = value;
1413 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1415 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1417 if (synaptics_mode_cmd(psmouse, priv->mode))
1423 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1424 synaptics_show_disable_gesture,
1425 synaptics_set_disable_gesture);
1427 static void synaptics_disconnect(struct psmouse *psmouse)
1429 struct synaptics_data *priv = psmouse->private;
1431 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1432 device_remove_file(&psmouse->ps2dev.serio->dev,
1433 &psmouse_attr_disable_gesture.dattr);
1435 synaptics_reset(psmouse);
1437 psmouse->private = NULL;
1440 static int synaptics_reconnect(struct psmouse *psmouse)
1442 struct synaptics_data *priv = psmouse->private;
1443 struct synaptics_data old_priv = *priv;
1444 unsigned char param[2];
1449 psmouse_reset(psmouse);
1452 * On some boxes, right after resuming, the touchpad
1453 * needs some time to finish initializing (I assume
1454 * it needs time to calibrate) and start responding
1455 * to Synaptics-specific queries, so let's wait a
1460 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1461 error = synaptics_detect(psmouse, 0);
1462 } while (error && ++retry < 3);
1468 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1470 if (synaptics_query_hardware(psmouse)) {
1471 psmouse_err(psmouse, "Unable to query device.\n");
1475 if (synaptics_set_mode(psmouse)) {
1476 psmouse_err(psmouse, "Unable to initialize device.\n");
1480 if (old_priv.identity != priv->identity ||
1481 old_priv.model_id != priv->model_id ||
1482 old_priv.capabilities != priv->capabilities ||
1483 old_priv.ext_cap != priv->ext_cap) {
1484 psmouse_err(psmouse,
1485 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1486 old_priv.identity, priv->identity,
1487 old_priv.model_id, priv->model_id,
1488 old_priv.capabilities, priv->capabilities,
1489 old_priv.ext_cap, priv->ext_cap);
1496 static bool impaired_toshiba_kbc;
1498 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1499 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1501 /* Toshiba Satellite */
1503 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1504 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1508 /* Toshiba Dynabook */
1510 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1511 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1515 /* Toshiba Portege M300 */
1517 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1518 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1523 /* Toshiba Portege M300 */
1525 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1526 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1527 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1535 static bool broken_olpc_ec;
1537 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1538 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1540 /* OLPC XO-1 or XO-1.5 */
1542 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1543 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1550 static const struct dmi_system_id min_max_dmi_table[] __initconst = {
1551 #if defined(CONFIG_DMI)
1553 /* Lenovo ThinkPad Helix */
1555 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1556 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Helix"),
1558 .driver_data = (int []){1024, 5052, 2258, 4832},
1561 /* Lenovo ThinkPad X240 */
1563 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1564 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X240"),
1566 .driver_data = (int []){1232, 5710, 1156, 4696},
1569 /* Lenovo ThinkPad T431s */
1571 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1572 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T431"),
1574 .driver_data = (int []){1024, 5112, 2024, 4832},
1577 /* Lenovo ThinkPad T440s */
1579 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1580 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T440"),
1582 .driver_data = (int []){1024, 5112, 2024, 4832},
1585 /* Lenovo ThinkPad L440 */
1587 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1588 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L440"),
1590 .driver_data = (int []){1024, 5112, 2024, 4832},
1593 /* Lenovo ThinkPad T540p */
1595 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1596 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T540"),
1598 .driver_data = (int []){1024, 5056, 2058, 4832},
1601 /* Lenovo ThinkPad L540 */
1603 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1604 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L540"),
1606 .driver_data = (int []){1024, 5112, 2024, 4832},
1609 /* Lenovo Yoga S1 */
1611 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1612 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
1613 "ThinkPad S1 Yoga"),
1615 .driver_data = (int []){1232, 5710, 1156, 4696},
1618 /* Lenovo ThinkPad X1 Carbon Haswell (3rd generation) */
1620 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1621 DMI_MATCH(DMI_PRODUCT_VERSION,
1622 "ThinkPad X1 Carbon 2nd"),
1624 .driver_data = (int []){1024, 5112, 2024, 4832},
1630 void __init synaptics_module_init(void)
1632 const struct dmi_system_id *min_max_dmi;
1634 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1635 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1637 min_max_dmi = dmi_first_match(min_max_dmi_table);
1639 quirk_min_max = min_max_dmi->driver_data;
1642 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1644 struct synaptics_data *priv;
1648 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1649 * packet spew overloads the EC such that key presses on the keyboard
1650 * are missed. Given that, don't even attempt to use Absolute mode.
1651 * Relative mode seems to work just fine.
1653 if (absolute_mode && broken_olpc_ec) {
1654 psmouse_info(psmouse,
1655 "OLPC XO detected, not enabling Synaptics protocol.\n");
1659 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1663 psmouse_reset(psmouse);
1665 if (synaptics_query_hardware(psmouse)) {
1666 psmouse_err(psmouse, "Unable to query device.\n");
1670 priv->absolute_mode = absolute_mode;
1671 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1672 priv->disable_gesture = true;
1674 if (synaptics_set_mode(psmouse)) {
1675 psmouse_err(psmouse, "Unable to initialize device.\n");
1679 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1681 psmouse_info(psmouse,
1682 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1683 SYN_ID_MODEL(priv->identity),
1684 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1686 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1687 priv->board_id, priv->firmware_id);
1689 set_input_params(psmouse, priv);
1692 * Encode touchpad model so that it can be used to set
1693 * input device->id.version and be visible to userspace.
1694 * Because version is __u16 we have to drop something.
1695 * Hardware info bits seem to be good candidates as they
1696 * are documented to be for Synaptics corp. internal use.
1698 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1699 (priv->model_id & 0x000000ff);
1701 if (absolute_mode) {
1702 psmouse->protocol_handler = synaptics_process_byte;
1703 psmouse->pktsize = 6;
1705 /* Relative mode follows standard PS/2 mouse protocol */
1706 psmouse->protocol_handler = psmouse_process_byte;
1707 psmouse->pktsize = 3;
1710 psmouse->set_rate = synaptics_set_rate;
1711 psmouse->disconnect = synaptics_disconnect;
1712 psmouse->reconnect = synaptics_reconnect;
1713 psmouse->cleanup = synaptics_reset;
1714 /* Synaptics can usually stay in sync without extra help */
1715 psmouse->resync_time = 0;
1717 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1718 synaptics_pt_create(psmouse);
1721 * Toshiba's KBC seems to have trouble handling data from
1722 * Synaptics at full rate. Switch to a lower rate (roughly
1723 * the same rate as a standard PS/2 mouse).
1725 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1726 psmouse_info(psmouse,
1727 "Toshiba %s detected, limiting rate to 40pps.\n",
1728 dmi_get_system_info(DMI_PRODUCT_NAME));
1732 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1733 err = device_create_file(&psmouse->ps2dev.serio->dev,
1734 &psmouse_attr_disable_gesture.dattr);
1736 psmouse_err(psmouse,
1737 "Failed to create disable_gesture attribute (%d)",
1750 int synaptics_init(struct psmouse *psmouse)
1752 return __synaptics_init(psmouse, true);
1755 int synaptics_init_relative(struct psmouse *psmouse)
1757 return __synaptics_init(psmouse, false);
1760 bool synaptics_supported(void)
1765 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1767 void __init synaptics_module_init(void)
1771 int synaptics_init(struct psmouse *psmouse)
1776 bool synaptics_supported(void)
1781 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */