2 * Synaptics TouchPad PS/2 mouse driver
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
23 * Trademarks are the property of their respective owners.
26 #include <linux/module.h>
27 #include <linux/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/slab.h>
34 #include "synaptics.h"
37 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
38 * section 2.3.2, which says that they should be valid regardless of the
39 * actual size of the sensor.
40 * Note that newer firmware allows querying device for maximum useable
47 #define XMIN_NOMINAL 1472
48 #define XMAX_NOMINAL 5472
49 #define YMIN_NOMINAL 1408
50 #define YMAX_NOMINAL 4448
52 /* Size in bits of absolute position values reported by the hardware */
53 #define ABS_POS_BITS 13
56 * These values should represent the absolute maximum value that will
57 * be reported for a positive position value. Some Synaptics firmware
58 * uses this value to indicate a finger near the edge of the touchpad
59 * whose precise position cannot be determined.
61 * At least one touchpad is known to report positions in excess of this
62 * value which are actually negative values truncated to the 13-bit
63 * reporting range. These values have never been observed to be lower
64 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
65 * negative and any other value as positive.
67 #define X_MAX_POSITIVE 8176
68 #define Y_MAX_POSITIVE 8176
70 /*****************************************************************************
71 * Stuff we need even when we do not want native Synaptics support
72 ****************************************************************************/
75 * Set the synaptics touchpad mode byte by special commands
77 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
79 unsigned char param[1];
81 if (psmouse_sliced_command(psmouse, mode))
83 param[0] = SYN_PS_SET_MODE2;
84 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
89 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
91 struct ps2dev *ps2dev = &psmouse->ps2dev;
92 unsigned char param[4];
96 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
97 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
98 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
100 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
102 if (param[1] != 0x47)
105 if (set_properties) {
106 psmouse->vendor = "Synaptics";
107 psmouse->name = "TouchPad";
113 void synaptics_reset(struct psmouse *psmouse)
115 /* reset touchpad back to relative mode, gestures enabled */
116 synaptics_mode_cmd(psmouse, 0);
119 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
121 static bool cr48_profile_sensor;
123 struct min_max_quirk {
124 const char * const *pnp_ids;
125 int x_min, x_max, y_min, y_max;
128 static const struct min_max_quirk min_max_pnpid_table[] = {
130 (const char * const []){"LEN0033", NULL},
131 1024, 5052, 2258, 4832
134 (const char * const []){"LEN0035", "LEN0042", NULL},
135 1232, 5710, 1156, 4696
138 (const char * const []){"LEN0034", "LEN0036", "LEN2002",
140 1024, 5112, 2024, 4832
143 (const char * const []){"LEN2001", NULL},
144 1024, 5022, 2508, 4832
149 /* This list has been kindly provided by Synaptics. */
150 static const char * const topbuttonpad_pnp_ids[] = {
160 "LEN0033", /* Helix */
161 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
162 "LEN0035", /* X240 */
163 "LEN0036", /* T440 */
167 "LEN0042", /* Yoga */
174 "LEN2001", /* Edge E431 */
175 "LEN2002", /* Edge E531 */
177 "LEN2004", /* L440 */
188 /*****************************************************************************
189 * Synaptics communications functions
190 ****************************************************************************/
193 * Synaptics touchpads report the y coordinate from bottom to top, which is
194 * opposite from what userspace expects.
195 * This function is used to invert y before reporting.
197 static int synaptics_invert_y(int y)
199 return YMAX_NOMINAL + YMIN_NOMINAL - y;
203 * Send a command to the synpatics touchpad by special commands
205 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
207 if (psmouse_sliced_command(psmouse, c))
209 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
215 * Read the model-id bytes from the touchpad
216 * see also SYN_MODEL_* macros
218 static int synaptics_model_id(struct psmouse *psmouse)
220 struct synaptics_data *priv = psmouse->private;
223 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
225 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
230 * Read the board id from the touchpad
231 * The board id is encoded in the "QUERY MODES" response
233 static int synaptics_board_id(struct psmouse *psmouse)
235 struct synaptics_data *priv = psmouse->private;
236 unsigned char bid[3];
238 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
240 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
245 * Read the firmware id from the touchpad
247 static int synaptics_firmware_id(struct psmouse *psmouse)
249 struct synaptics_data *priv = psmouse->private;
250 unsigned char fwid[3];
252 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
254 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
259 * Read the capability-bits from the touchpad
260 * see also the SYN_CAP_* macros
262 static int synaptics_capability(struct psmouse *psmouse)
264 struct synaptics_data *priv = psmouse->private;
265 unsigned char cap[3];
267 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
269 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
270 priv->ext_cap = priv->ext_cap_0c = 0;
273 * Older firmwares had submodel ID fixed to 0x47
275 if (SYN_ID_FULL(priv->identity) < 0x705 &&
276 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
281 * Unless capExtended is set the rest of the flags should be ignored
283 if (!SYN_CAP_EXTENDED(priv->capabilities))
284 priv->capabilities = 0;
286 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
287 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
288 psmouse_warn(psmouse,
289 "device claims to have extended capabilities, but I'm not able to read them.\n");
291 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
294 * if nExtBtn is greater than 8 it should be considered
295 * invalid and treated as 0
297 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
298 priv->ext_cap &= 0xff0fff;
302 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
303 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
304 psmouse_warn(psmouse,
305 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
307 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
316 * See also the SYN_ID_* macros
318 static int synaptics_identify(struct psmouse *psmouse)
320 struct synaptics_data *priv = psmouse->private;
323 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
325 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
326 if (SYN_ID_IS_SYNAPTICS(priv->identity))
332 * Read touchpad resolution and maximum reported coordinates
333 * Resolution is left zero if touchpad does not support the query
336 static int synaptics_resolution(struct psmouse *psmouse)
338 struct synaptics_data *priv = psmouse->private;
339 unsigned char resp[3];
342 if (SYN_ID_MAJOR(priv->identity) < 4)
345 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
346 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
347 priv->x_res = resp[0]; /* x resolution in units/mm */
348 priv->y_res = resp[2]; /* y resolution in units/mm */
352 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
353 if (psmouse_matches_pnp_id(psmouse,
354 min_max_pnpid_table[i].pnp_ids)) {
355 priv->x_min = min_max_pnpid_table[i].x_min;
356 priv->x_max = min_max_pnpid_table[i].x_max;
357 priv->y_min = min_max_pnpid_table[i].y_min;
358 priv->y_max = min_max_pnpid_table[i].y_max;
363 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
364 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
365 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
366 psmouse_warn(psmouse,
367 "device claims to have max coordinates query, but I'm not able to read it.\n");
369 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
370 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
374 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
375 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
376 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
377 psmouse_warn(psmouse,
378 "device claims to have min coordinates query, but I'm not able to read it.\n");
380 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
381 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
388 static int synaptics_query_hardware(struct psmouse *psmouse)
390 if (synaptics_identify(psmouse))
392 if (synaptics_model_id(psmouse))
394 if (synaptics_firmware_id(psmouse))
396 if (synaptics_board_id(psmouse))
398 if (synaptics_capability(psmouse))
400 if (synaptics_resolution(psmouse))
406 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
408 static unsigned char param = 0xc8;
409 struct synaptics_data *priv = psmouse->private;
411 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
412 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
415 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
418 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
421 /* Advanced gesture mode also sends multi finger data */
422 priv->capabilities |= BIT(1);
427 static int synaptics_set_mode(struct psmouse *psmouse)
429 struct synaptics_data *priv = psmouse->private;
432 if (priv->absolute_mode)
433 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
434 if (priv->disable_gesture)
435 priv->mode |= SYN_BIT_DISABLE_GESTURE;
436 if (psmouse->rate >= 80)
437 priv->mode |= SYN_BIT_HIGH_RATE;
438 if (SYN_CAP_EXTENDED(priv->capabilities))
439 priv->mode |= SYN_BIT_W_MODE;
441 if (synaptics_mode_cmd(psmouse, priv->mode))
444 if (priv->absolute_mode &&
445 synaptics_set_advanced_gesture_mode(psmouse)) {
446 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
453 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
455 struct synaptics_data *priv = psmouse->private;
458 priv->mode |= SYN_BIT_HIGH_RATE;
461 priv->mode &= ~SYN_BIT_HIGH_RATE;
465 synaptics_mode_cmd(psmouse, priv->mode);
468 /*****************************************************************************
469 * Synaptics pass-through PS/2 port support
470 ****************************************************************************/
471 static int synaptics_pt_write(struct serio *serio, unsigned char c)
473 struct psmouse *parent = serio_get_drvdata(serio->parent);
474 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
476 if (psmouse_sliced_command(parent, c))
478 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
483 static int synaptics_pt_start(struct serio *serio)
485 struct psmouse *parent = serio_get_drvdata(serio->parent);
486 struct synaptics_data *priv = parent->private;
488 serio_pause_rx(parent->ps2dev.serio);
489 priv->pt_port = serio;
490 serio_continue_rx(parent->ps2dev.serio);
495 static void synaptics_pt_stop(struct serio *serio)
497 struct psmouse *parent = serio_get_drvdata(serio->parent);
498 struct synaptics_data *priv = parent->private;
500 serio_pause_rx(parent->ps2dev.serio);
501 priv->pt_port = NULL;
502 serio_continue_rx(parent->ps2dev.serio);
505 static int synaptics_is_pt_packet(unsigned char *buf)
507 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
510 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
512 struct psmouse *child = serio_get_drvdata(ptport);
514 if (child && child->state == PSMOUSE_ACTIVATED) {
515 serio_interrupt(ptport, packet[1], 0);
516 serio_interrupt(ptport, packet[4], 0);
517 serio_interrupt(ptport, packet[5], 0);
518 if (child->pktsize == 4)
519 serio_interrupt(ptport, packet[2], 0);
521 serio_interrupt(ptport, packet[1], 0);
524 static void synaptics_pt_activate(struct psmouse *psmouse)
526 struct synaptics_data *priv = psmouse->private;
527 struct psmouse *child = serio_get_drvdata(priv->pt_port);
529 /* adjust the touchpad to child's choice of protocol */
531 if (child->pktsize == 4)
532 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
534 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
536 if (synaptics_mode_cmd(psmouse, priv->mode))
537 psmouse_warn(psmouse,
538 "failed to switch guest protocol\n");
542 static void synaptics_pt_create(struct psmouse *psmouse)
546 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
549 "not enough memory for pass-through port\n");
553 serio->id.type = SERIO_PS_PSTHRU;
554 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
555 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
556 serio->write = synaptics_pt_write;
557 serio->start = synaptics_pt_start;
558 serio->stop = synaptics_pt_stop;
559 serio->parent = psmouse->ps2dev.serio;
561 psmouse->pt_activate = synaptics_pt_activate;
563 psmouse_info(psmouse, "serio: %s port at %s\n",
564 serio->name, psmouse->phys);
565 serio_register_port(serio);
568 /*****************************************************************************
569 * Functions to interpret the absolute mode packets
570 ****************************************************************************/
572 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
575 state->count = count;
580 static void synaptics_parse_agm(const unsigned char buf[],
581 struct synaptics_data *priv,
582 struct synaptics_hw_state *hw)
584 struct synaptics_hw_state *agm = &priv->agm;
587 agm_packet_type = (buf[5] & 0x30) >> 4;
588 switch (agm_packet_type) {
590 /* Gesture packet: (x, y, z) half resolution */
592 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
593 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
594 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
598 /* AGM-CONTACT packet: (count, sgm, agm) */
599 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
606 /* Record that at least one AGM has been received since last SGM */
607 priv->agm_pending = true;
610 static int synaptics_parse_hw_state(const unsigned char buf[],
611 struct synaptics_data *priv,
612 struct synaptics_hw_state *hw)
614 memset(hw, 0, sizeof(struct synaptics_hw_state));
616 if (SYN_MODEL_NEWABS(priv->model_id)) {
617 hw->w = (((buf[0] & 0x30) >> 2) |
618 ((buf[0] & 0x04) >> 1) |
619 ((buf[3] & 0x04) >> 2));
621 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
622 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
624 synaptics_parse_agm(buf, priv, hw);
628 hw->x = (((buf[3] & 0x10) << 8) |
629 ((buf[1] & 0x0f) << 8) |
631 hw->y = (((buf[3] & 0x20) << 7) |
632 ((buf[1] & 0xf0) << 4) |
636 hw->left = (buf[0] & 0x01) ? 1 : 0;
637 hw->right = (buf[0] & 0x02) ? 1 : 0;
639 if (SYN_CAP_FORCEPAD(priv->ext_cap_0c)) {
641 * ForcePads, like Clickpads, use middle button
642 * bits to report primary button clicks.
643 * Unfortunately they report primary button not
644 * only when user presses on the pad above certain
645 * threshold, but also when there are more than one
646 * finger on the touchpad, which interferes with
647 * out multi-finger gestures.
651 priv->press = priv->report_press = false;
652 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
654 * Single-finger touch with pressure above
655 * the threshold. If pressure stays long
656 * enough, we'll start reporting primary
657 * button. We rely on the device continuing
658 * sending data even if finger does not
662 priv->press_start = jiffies;
664 } else if (time_after(jiffies,
666 msecs_to_jiffies(50))) {
667 priv->report_press = true;
673 hw->left = priv->report_press;
675 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
677 * Clickpad's button is transmitted as middle button,
678 * however, since it is primary button, we will report
681 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
683 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
684 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
686 hw->scroll = (signed char)(buf[1]);
689 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
690 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
691 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
694 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
695 ((buf[0] ^ buf[3]) & 0x02)) {
696 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
699 * if nExtBtn is greater than 8 it should be
700 * considered invalid and treated as 0
704 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
705 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
707 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
708 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
710 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
711 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
713 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
714 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
718 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
719 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
721 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
722 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
724 hw->left = (buf[0] & 0x01) ? 1 : 0;
725 hw->right = (buf[0] & 0x02) ? 1 : 0;
729 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
730 * is used by some firmware to indicate a finger at the edge of
731 * the touchpad whose precise position cannot be determined, so
732 * convert these values to the maximum axis value.
734 if (hw->x > X_MAX_POSITIVE)
735 hw->x -= 1 << ABS_POS_BITS;
736 else if (hw->x == X_MAX_POSITIVE)
739 if (hw->y > Y_MAX_POSITIVE)
740 hw->y -= 1 << ABS_POS_BITS;
741 else if (hw->y == Y_MAX_POSITIVE)
747 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
748 bool active, int x, int y)
750 input_mt_slot(dev, slot);
751 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
753 input_report_abs(dev, ABS_MT_POSITION_X, x);
754 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
758 static void synaptics_report_semi_mt_data(struct input_dev *dev,
759 const struct synaptics_hw_state *a,
760 const struct synaptics_hw_state *b,
763 if (num_fingers >= 2) {
764 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
766 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
768 } else if (num_fingers == 1) {
769 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
770 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
772 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
773 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
777 static void synaptics_report_buttons(struct psmouse *psmouse,
778 const struct synaptics_hw_state *hw)
780 struct input_dev *dev = psmouse->dev;
781 struct synaptics_data *priv = psmouse->private;
784 input_report_key(dev, BTN_LEFT, hw->left);
785 input_report_key(dev, BTN_RIGHT, hw->right);
787 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
788 input_report_key(dev, BTN_MIDDLE, hw->middle);
790 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
791 input_report_key(dev, BTN_FORWARD, hw->up);
792 input_report_key(dev, BTN_BACK, hw->down);
795 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
796 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
799 static void synaptics_report_slot(struct input_dev *dev, int slot,
800 const struct synaptics_hw_state *hw)
802 input_mt_slot(dev, slot);
803 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
807 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
808 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
809 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
812 static void synaptics_report_mt_data(struct psmouse *psmouse,
813 struct synaptics_mt_state *mt_state,
814 const struct synaptics_hw_state *sgm)
816 struct input_dev *dev = psmouse->dev;
817 struct synaptics_data *priv = psmouse->private;
818 struct synaptics_hw_state *agm = &priv->agm;
819 struct synaptics_mt_state *old = &priv->mt_state;
821 switch (mt_state->count) {
823 synaptics_report_slot(dev, 0, NULL);
824 synaptics_report_slot(dev, 1, NULL);
827 if (mt_state->sgm == -1) {
828 synaptics_report_slot(dev, 0, NULL);
829 synaptics_report_slot(dev, 1, NULL);
830 } else if (mt_state->sgm == 0) {
831 synaptics_report_slot(dev, 0, sgm);
832 synaptics_report_slot(dev, 1, NULL);
834 synaptics_report_slot(dev, 0, NULL);
835 synaptics_report_slot(dev, 1, sgm);
840 * If the finger slot contained in SGM is valid, and either
841 * hasn't changed, or is new, or the old SGM has now moved to
842 * AGM, then report SGM in MTB slot 0.
843 * Otherwise, empty MTB slot 0.
845 if (mt_state->sgm != -1 &&
846 (mt_state->sgm == old->sgm ||
847 old->sgm == -1 || mt_state->agm == old->sgm))
848 synaptics_report_slot(dev, 0, sgm);
850 synaptics_report_slot(dev, 0, NULL);
853 * If the finger slot contained in AGM is valid, and either
854 * hasn't changed, or is new, then report AGM in MTB slot 1.
855 * Otherwise, empty MTB slot 1.
857 * However, in the case where the AGM is new, make sure that
858 * that it is either the same as the old SGM, or there was no
861 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
862 * the new AGM will keep the old SGM's tracking ID, which can
863 * cause apparent drumroll. This happens if in the following
864 * valid finger sequence:
866 * Action SGM AGM (MTB slot:Contact)
867 * 1. Touch contact 0 (0:0)
868 * 2. Touch contact 1 (0:0, 1:1)
869 * 3. Lift contact 0 (1:1)
870 * 4. Touch contacts 2,3 (0:2, 1:3)
872 * In step 4, contact 3, in AGM must not be given the same
873 * tracking ID as contact 1 had in step 3. To avoid this,
874 * the first agm with contact 3 is dropped and slot 1 is
875 * invalidated (tracking ID = -1).
877 if (mt_state->agm != -1 &&
878 (mt_state->agm == old->agm ||
880 (old->sgm == -1 || mt_state->agm == old->sgm))))
881 synaptics_report_slot(dev, 1, agm);
883 synaptics_report_slot(dev, 1, NULL);
887 /* Don't use active slot count to generate BTN_TOOL events. */
888 input_mt_report_pointer_emulation(dev, false);
890 /* Send the number of fingers reported by touchpad itself. */
891 input_mt_report_finger_count(dev, mt_state->count);
893 synaptics_report_buttons(psmouse, sgm);
898 /* Handle case where mt_state->count = 0 */
899 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
900 struct synaptics_mt_state *mt_state)
902 synaptics_mt_state_set(mt_state, 0, -1, -1);
903 priv->mt_state_lost = false;
906 /* Handle case where mt_state->count = 1 */
907 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
908 struct synaptics_mt_state *mt_state)
910 struct synaptics_hw_state *agm = &priv->agm;
911 struct synaptics_mt_state *old = &priv->mt_state;
914 * If the last AGM was (0,0,0), and there is only one finger left,
915 * then we absolutely know that SGM contains slot 0, and all other
916 * fingers have been removed.
918 if (priv->agm_pending && agm->z == 0) {
919 synaptics_mt_state_set(mt_state, 1, 0, -1);
920 priv->mt_state_lost = false;
924 switch (old->count) {
926 synaptics_mt_state_set(mt_state, 1, 0, -1);
930 * If mt_state_lost, then the previous transition was 3->1,
931 * and SGM now contains either slot 0 or 1, but we don't know
932 * which. So, we just assume that the SGM now contains slot 1.
934 * If pending AGM and either:
935 * (a) the previous SGM slot contains slot 0, or
936 * (b) there was no SGM slot
937 * then, the SGM now contains slot 1
939 * Case (a) happens with very rapid "drum roll" gestures, where
940 * slot 0 finger is lifted and a new slot 1 finger touches
941 * within one reporting interval.
943 * Case (b) happens if initially two or more fingers tap
944 * briefly, and all but one lift before the end of the first
945 * reporting interval.
947 * (In both these cases, slot 0 will becomes empty, so SGM
948 * contains slot 1 with the new finger)
950 * Else, if there was no previous SGM, it now contains slot 0.
952 * Otherwise, SGM still contains the same slot.
954 if (priv->mt_state_lost ||
955 (priv->agm_pending && old->sgm <= 0))
956 synaptics_mt_state_set(mt_state, 1, 1, -1);
957 else if (old->sgm == -1)
958 synaptics_mt_state_set(mt_state, 1, 0, -1);
962 * If mt_state_lost, we don't know which finger SGM contains.
964 * So, report 1 finger, but with both slots empty.
965 * We will use slot 1 on subsequent 1->1
967 if (priv->mt_state_lost) {
968 synaptics_mt_state_set(mt_state, 1, -1, -1);
972 * Since the last AGM was NOT (0,0,0), it was the finger in
973 * slot 0 that has been removed.
974 * So, SGM now contains previous AGM's slot, and AGM is now
977 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
981 * Since last AGM was not (0,0,0), we don't know which finger
984 * So, report 1 finger, but with both slots empty.
985 * We will use slot 1 on subsequent 1->1
987 synaptics_mt_state_set(mt_state, 1, -1, -1);
988 priv->mt_state_lost = true;
992 /* mt_state was updated by AGM-CONTACT packet */
997 /* Handle case where mt_state->count = 2 */
998 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
999 struct synaptics_mt_state *mt_state)
1001 struct synaptics_mt_state *old = &priv->mt_state;
1003 switch (old->count) {
1005 synaptics_mt_state_set(mt_state, 2, 0, 1);
1009 * If previous SGM contained slot 1 or higher, SGM now contains
1010 * slot 0 (the newly touching finger) and AGM contains SGM's
1013 * Otherwise, SGM still contains slot 0 and AGM now contains
1017 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
1019 synaptics_mt_state_set(mt_state, 2, 0, 1);
1023 * If mt_state_lost, SGM now contains either finger 1 or 2, but
1024 * we don't know which.
1025 * So, we just assume that the SGM contains slot 0 and AGM 1.
1027 if (priv->mt_state_lost)
1028 synaptics_mt_state_set(mt_state, 2, 0, 1);
1030 * Otherwise, use the same mt_state, since it either hasn't
1031 * changed, or was updated by a recently received AGM-CONTACT
1037 * 3->2 transitions have two unsolvable problems:
1038 * 1) no indication is given which finger was removed
1039 * 2) no way to tell if agm packet was for finger 3
1040 * before 3->2, or finger 2 after 3->2.
1042 * So, report 2 fingers, but empty all slots.
1043 * We will guess slots [0,1] on subsequent 2->2.
1045 synaptics_mt_state_set(mt_state, 2, -1, -1);
1046 priv->mt_state_lost = true;
1050 /* mt_state was updated by AGM-CONTACT packet */
1055 /* Handle case where mt_state->count = 3 */
1056 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1057 struct synaptics_mt_state *mt_state)
1059 struct synaptics_mt_state *old = &priv->mt_state;
1061 switch (old->count) {
1063 synaptics_mt_state_set(mt_state, 3, 0, 2);
1067 * If previous SGM contained slot 2 or higher, SGM now contains
1068 * slot 0 (one of the newly touching fingers) and AGM contains
1069 * SGM's previous slot.
1071 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1074 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1076 synaptics_mt_state_set(mt_state, 3, 0, 2);
1080 * If the AGM previously contained slot 3 or higher, then the
1081 * newly touching finger is in the lowest available slot.
1083 * If SGM was previously 1 or higher, then the new SGM is
1084 * now slot 0 (with a new finger), otherwise, the new finger
1085 * is now in a hidden slot between 0 and AGM's slot.
1087 * In all such cases, the SGM now contains slot 0, and the AGM
1088 * continues to contain the same slot as before.
1090 if (old->agm >= 3) {
1091 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1096 * After some 3->1 and all 3->2 transitions, we lose track
1097 * of which slot is reported by SGM and AGM.
1099 * For 2->3 in this state, report 3 fingers, but empty all
1100 * slots, and we will guess (0,2) on a subsequent 0->3.
1102 * To userspace, the resulting transition will look like:
1103 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1105 if (priv->mt_state_lost) {
1106 synaptics_mt_state_set(mt_state, 3, -1, -1);
1111 * If the (SGM,AGM) really previously contained slots (0, 1),
1112 * then we cannot know what slot was just reported by the AGM,
1113 * because the 2->3 transition can occur either before or after
1114 * the AGM packet. Thus, this most recent AGM could contain
1115 * either the same old slot 1 or the new slot 2.
1116 * Subsequent AGMs will be reporting slot 2.
1118 * To userspace, the resulting transition will look like:
1119 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1121 synaptics_mt_state_set(mt_state, 3, 0, -1);
1125 * If, for whatever reason, the previous agm was invalid,
1126 * Assume SGM now contains slot 0, AGM now contains slot 2.
1129 synaptics_mt_state_set(mt_state, 3, 0, 2);
1131 * mt_state either hasn't changed, or was updated by a recently
1132 * received AGM-CONTACT packet.
1138 /* mt_state was updated by AGM-CONTACT packet */
1143 /* Handle case where mt_state->count = 4, or = 5 */
1144 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1145 struct synaptics_mt_state *mt_state)
1147 /* mt_state was updated correctly by AGM-CONTACT packet */
1148 priv->mt_state_lost = false;
1151 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1152 struct synaptics_hw_state *sgm)
1154 struct synaptics_data *priv = psmouse->private;
1155 struct synaptics_hw_state *agm = &priv->agm;
1156 struct synaptics_mt_state mt_state;
1158 /* Initialize using current mt_state (as updated by last agm) */
1159 mt_state = agm->mt_state;
1162 * Update mt_state using the new finger count and current mt_state.
1165 synaptics_image_sensor_0f(priv, &mt_state);
1166 else if (sgm->w >= 4)
1167 synaptics_image_sensor_1f(priv, &mt_state);
1168 else if (sgm->w == 0)
1169 synaptics_image_sensor_2f(priv, &mt_state);
1170 else if (sgm->w == 1 && mt_state.count <= 3)
1171 synaptics_image_sensor_3f(priv, &mt_state);
1173 synaptics_image_sensor_45f(priv, &mt_state);
1175 /* Send resulting input events to user space */
1176 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1178 /* Store updated mt_state */
1179 priv->mt_state = agm->mt_state = mt_state;
1180 priv->agm_pending = false;
1183 static void synaptics_profile_sensor_process(struct psmouse *psmouse,
1184 struct synaptics_hw_state *sgm,
1187 struct input_dev *dev = psmouse->dev;
1188 struct synaptics_data *priv = psmouse->private;
1189 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
1190 struct input_mt_pos pos[2];
1191 int slot[2], nsemi, i;
1193 nsemi = clamp_val(num_fingers, 0, 2);
1195 for (i = 0; i < nsemi; i++) {
1196 pos[i].x = hw[i]->x;
1197 pos[i].y = synaptics_invert_y(hw[i]->y);
1200 input_mt_assign_slots(dev, slot, pos, nsemi);
1202 for (i = 0; i < nsemi; i++) {
1203 input_mt_slot(dev, slot[i]);
1204 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1205 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1206 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1207 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1210 input_mt_drop_unused(dev);
1211 input_mt_report_pointer_emulation(dev, false);
1212 input_mt_report_finger_count(dev, num_fingers);
1214 synaptics_report_buttons(psmouse, sgm);
1220 * called for each full received packet from the touchpad
1222 static void synaptics_process_packet(struct psmouse *psmouse)
1224 struct input_dev *dev = psmouse->dev;
1225 struct synaptics_data *priv = psmouse->private;
1226 struct synaptics_hw_state hw;
1230 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1233 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1234 synaptics_image_sensor_process(psmouse, &hw);
1239 priv->scroll += hw.scroll;
1241 while (priv->scroll >= 4) {
1242 input_report_key(dev, BTN_BACK, !hw.down);
1244 input_report_key(dev, BTN_BACK, hw.down);
1248 while (priv->scroll <= -4) {
1249 input_report_key(dev, BTN_FORWARD, !hw.up);
1251 input_report_key(dev, BTN_FORWARD, hw.up);
1258 if (hw.z > 0 && hw.x > 1) {
1261 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1264 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1265 num_fingers = hw.w + 2;
1268 if (SYN_MODEL_PEN(priv->model_id))
1269 ; /* Nothing, treat a pen as a single finger */
1272 if (SYN_CAP_PALMDETECT(priv->capabilities))
1273 finger_width = hw.w;
1282 if (cr48_profile_sensor) {
1283 synaptics_profile_sensor_process(psmouse, &hw, num_fingers);
1287 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1288 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1292 * BTN_TOUCH has to be first as mousedev relies on it when doing
1293 * absolute -> relative conversion
1295 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1296 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1298 if (num_fingers > 0) {
1299 input_report_abs(dev, ABS_X, hw.x);
1300 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1302 input_report_abs(dev, ABS_PRESSURE, hw.z);
1304 if (SYN_CAP_PALMDETECT(priv->capabilities))
1305 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1307 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1308 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1309 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1310 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1313 synaptics_report_buttons(psmouse, &hw);
1318 static int synaptics_validate_byte(struct psmouse *psmouse,
1319 int idx, unsigned char pkt_type)
1321 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1322 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1323 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1324 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1325 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1326 const char *packet = psmouse->packet;
1328 if (idx < 0 || idx > 4)
1334 case SYN_NEWABS_RELAXED:
1335 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1337 case SYN_NEWABS_STRICT:
1338 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1341 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1344 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1349 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1353 for (i = 0; i < 5; i++)
1354 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1355 psmouse_info(psmouse, "using relaxed packet validation\n");
1356 return SYN_NEWABS_RELAXED;
1359 return SYN_NEWABS_STRICT;
1362 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1364 struct synaptics_data *priv = psmouse->private;
1366 if (psmouse->pktcnt >= 6) { /* Full packet received */
1367 if (unlikely(priv->pkt_type == SYN_NEWABS))
1368 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1370 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1371 synaptics_is_pt_packet(psmouse->packet)) {
1373 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1375 synaptics_process_packet(psmouse);
1377 return PSMOUSE_FULL_PACKET;
1380 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1381 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1384 /*****************************************************************************
1385 * Driver initialization/cleanup functions
1386 ****************************************************************************/
1387 static void set_abs_position_params(struct input_dev *dev,
1388 struct synaptics_data *priv, int x_code,
1391 int x_min = priv->x_min ?: XMIN_NOMINAL;
1392 int x_max = priv->x_max ?: XMAX_NOMINAL;
1393 int y_min = priv->y_min ?: YMIN_NOMINAL;
1394 int y_max = priv->y_max ?: YMAX_NOMINAL;
1395 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1396 SYN_REDUCED_FILTER_FUZZ : 0;
1398 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1399 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1400 input_abs_set_res(dev, x_code, priv->x_res);
1401 input_abs_set_res(dev, y_code, priv->y_res);
1404 static void set_input_params(struct psmouse *psmouse,
1405 struct synaptics_data *priv)
1407 struct input_dev *dev = psmouse->dev;
1410 /* Things that apply to both modes */
1411 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1412 __set_bit(EV_KEY, dev->evbit);
1413 __set_bit(BTN_LEFT, dev->keybit);
1414 __set_bit(BTN_RIGHT, dev->keybit);
1416 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1417 __set_bit(BTN_MIDDLE, dev->keybit);
1419 if (!priv->absolute_mode) {
1421 __set_bit(EV_REL, dev->evbit);
1422 __set_bit(REL_X, dev->relbit);
1423 __set_bit(REL_Y, dev->relbit);
1428 __set_bit(EV_ABS, dev->evbit);
1429 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1430 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1432 if (cr48_profile_sensor)
1433 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1435 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1436 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1438 /* Image sensors can report per-contact pressure */
1439 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1440 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1442 /* Image sensors can signal 4 and 5 finger clicks */
1443 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1444 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1445 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1446 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1449 * Profile sensor in CR-48 tracks contacts reasonably well,
1450 * other non-image sensors with AGM use semi-mt.
1452 input_mt_init_slots(dev, 2,
1454 (cr48_profile_sensor ?
1455 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1458 if (SYN_CAP_PALMDETECT(priv->capabilities))
1459 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1461 __set_bit(BTN_TOUCH, dev->keybit);
1462 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1464 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1465 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1466 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1469 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1470 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1471 __set_bit(BTN_FORWARD, dev->keybit);
1472 __set_bit(BTN_BACK, dev->keybit);
1475 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1476 __set_bit(BTN_0 + i, dev->keybit);
1478 __clear_bit(EV_REL, dev->evbit);
1479 __clear_bit(REL_X, dev->relbit);
1480 __clear_bit(REL_Y, dev->relbit);
1482 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1483 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1484 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1485 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1486 /* Clickpads report only left button */
1487 __clear_bit(BTN_RIGHT, dev->keybit);
1488 __clear_bit(BTN_MIDDLE, dev->keybit);
1492 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1493 void *data, char *buf)
1495 struct synaptics_data *priv = psmouse->private;
1497 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1500 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1501 void *data, const char *buf,
1504 struct synaptics_data *priv = psmouse->private;
1508 err = kstrtouint(buf, 10, &value);
1515 if (value == priv->disable_gesture)
1518 priv->disable_gesture = value;
1520 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1522 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1524 if (synaptics_mode_cmd(psmouse, priv->mode))
1530 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1531 synaptics_show_disable_gesture,
1532 synaptics_set_disable_gesture);
1534 static void synaptics_disconnect(struct psmouse *psmouse)
1536 struct synaptics_data *priv = psmouse->private;
1538 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1539 device_remove_file(&psmouse->ps2dev.serio->dev,
1540 &psmouse_attr_disable_gesture.dattr);
1542 synaptics_reset(psmouse);
1544 psmouse->private = NULL;
1547 static int synaptics_reconnect(struct psmouse *psmouse)
1549 struct synaptics_data *priv = psmouse->private;
1550 struct synaptics_data old_priv = *priv;
1551 unsigned char param[2];
1556 psmouse_reset(psmouse);
1559 * On some boxes, right after resuming, the touchpad
1560 * needs some time to finish initializing (I assume
1561 * it needs time to calibrate) and start responding
1562 * to Synaptics-specific queries, so let's wait a
1567 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1568 error = synaptics_detect(psmouse, 0);
1569 } while (error && ++retry < 3);
1575 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1577 if (synaptics_query_hardware(psmouse)) {
1578 psmouse_err(psmouse, "Unable to query device.\n");
1582 if (synaptics_set_mode(psmouse)) {
1583 psmouse_err(psmouse, "Unable to initialize device.\n");
1587 if (old_priv.identity != priv->identity ||
1588 old_priv.model_id != priv->model_id ||
1589 old_priv.capabilities != priv->capabilities ||
1590 old_priv.ext_cap != priv->ext_cap) {
1591 psmouse_err(psmouse,
1592 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1593 old_priv.identity, priv->identity,
1594 old_priv.model_id, priv->model_id,
1595 old_priv.capabilities, priv->capabilities,
1596 old_priv.ext_cap, priv->ext_cap);
1603 static bool impaired_toshiba_kbc;
1605 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1606 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1608 /* Toshiba Satellite */
1610 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1611 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1615 /* Toshiba Dynabook */
1617 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1618 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1622 /* Toshiba Portege M300 */
1624 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1625 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1630 /* Toshiba Portege M300 */
1632 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1633 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1634 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1642 static bool broken_olpc_ec;
1644 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1645 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1647 /* OLPC XO-1 or XO-1.5 */
1649 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1650 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1657 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1658 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1660 /* Cr-48 Chromebook (Codename Mario) */
1662 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1663 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1670 void __init synaptics_module_init(void)
1672 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1673 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1674 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1677 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1679 struct synaptics_data *priv;
1683 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1684 * packet spew overloads the EC such that key presses on the keyboard
1685 * are missed. Given that, don't even attempt to use Absolute mode.
1686 * Relative mode seems to work just fine.
1688 if (absolute_mode && broken_olpc_ec) {
1689 psmouse_info(psmouse,
1690 "OLPC XO detected, not enabling Synaptics protocol.\n");
1694 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1698 psmouse_reset(psmouse);
1700 if (synaptics_query_hardware(psmouse)) {
1701 psmouse_err(psmouse, "Unable to query device.\n");
1705 priv->absolute_mode = absolute_mode;
1706 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1707 priv->disable_gesture = true;
1709 if (synaptics_set_mode(psmouse)) {
1710 psmouse_err(psmouse, "Unable to initialize device.\n");
1714 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1716 psmouse_info(psmouse,
1717 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1718 SYN_ID_MODEL(priv->identity),
1719 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1721 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1722 priv->board_id, priv->firmware_id);
1724 set_input_params(psmouse, priv);
1727 * Encode touchpad model so that it can be used to set
1728 * input device->id.version and be visible to userspace.
1729 * Because version is __u16 we have to drop something.
1730 * Hardware info bits seem to be good candidates as they
1731 * are documented to be for Synaptics corp. internal use.
1733 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1734 (priv->model_id & 0x000000ff);
1736 if (absolute_mode) {
1737 psmouse->protocol_handler = synaptics_process_byte;
1738 psmouse->pktsize = 6;
1740 /* Relative mode follows standard PS/2 mouse protocol */
1741 psmouse->protocol_handler = psmouse_process_byte;
1742 psmouse->pktsize = 3;
1745 psmouse->set_rate = synaptics_set_rate;
1746 psmouse->disconnect = synaptics_disconnect;
1747 psmouse->reconnect = synaptics_reconnect;
1748 psmouse->cleanup = synaptics_reset;
1749 /* Synaptics can usually stay in sync without extra help */
1750 psmouse->resync_time = 0;
1752 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1753 synaptics_pt_create(psmouse);
1756 * Toshiba's KBC seems to have trouble handling data from
1757 * Synaptics at full rate. Switch to a lower rate (roughly
1758 * the same rate as a standard PS/2 mouse).
1760 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1761 psmouse_info(psmouse,
1762 "Toshiba %s detected, limiting rate to 40pps.\n",
1763 dmi_get_system_info(DMI_PRODUCT_NAME));
1767 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1768 err = device_create_file(&psmouse->ps2dev.serio->dev,
1769 &psmouse_attr_disable_gesture.dattr);
1771 psmouse_err(psmouse,
1772 "Failed to create disable_gesture attribute (%d)",
1785 int synaptics_init(struct psmouse *psmouse)
1787 return __synaptics_init(psmouse, true);
1790 int synaptics_init_relative(struct psmouse *psmouse)
1792 return __synaptics_init(psmouse, false);
1795 bool synaptics_supported(void)
1800 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1802 void __init synaptics_module_init(void)
1806 int synaptics_init(struct psmouse *psmouse)
1811 bool synaptics_supported(void)
1816 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */