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 static bool matches_pnp_id(struct psmouse *psmouse, const char * const ids[])
192 if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4))
193 for (i = 0; ids[i]; i++)
194 if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i]))
200 /*****************************************************************************
201 * Synaptics communications functions
202 ****************************************************************************/
205 * Synaptics touchpads report the y coordinate from bottom to top, which is
206 * opposite from what userspace expects.
207 * This function is used to invert y before reporting.
209 static int synaptics_invert_y(int y)
211 return YMAX_NOMINAL + YMIN_NOMINAL - y;
215 * Send a command to the synpatics touchpad by special commands
217 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
219 if (psmouse_sliced_command(psmouse, c))
221 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
227 * Read the model-id bytes from the touchpad
228 * see also SYN_MODEL_* macros
230 static int synaptics_model_id(struct psmouse *psmouse)
232 struct synaptics_data *priv = psmouse->private;
235 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
237 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
242 * Read the board id from the touchpad
243 * The board id is encoded in the "QUERY MODES" response
245 static int synaptics_board_id(struct psmouse *psmouse)
247 struct synaptics_data *priv = psmouse->private;
248 unsigned char bid[3];
250 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
252 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
257 * Read the firmware id from the touchpad
259 static int synaptics_firmware_id(struct psmouse *psmouse)
261 struct synaptics_data *priv = psmouse->private;
262 unsigned char fwid[3];
264 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
266 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
271 * Read the capability-bits from the touchpad
272 * see also the SYN_CAP_* macros
274 static int synaptics_capability(struct psmouse *psmouse)
276 struct synaptics_data *priv = psmouse->private;
277 unsigned char cap[3];
279 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
281 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
282 priv->ext_cap = priv->ext_cap_0c = 0;
285 * Older firmwares had submodel ID fixed to 0x47
287 if (SYN_ID_FULL(priv->identity) < 0x705 &&
288 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
293 * Unless capExtended is set the rest of the flags should be ignored
295 if (!SYN_CAP_EXTENDED(priv->capabilities))
296 priv->capabilities = 0;
298 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
299 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
300 psmouse_warn(psmouse,
301 "device claims to have extended capabilities, but I'm not able to read them.\n");
303 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
306 * if nExtBtn is greater than 8 it should be considered
307 * invalid and treated as 0
309 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
310 priv->ext_cap &= 0xff0fff;
314 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
315 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
316 psmouse_warn(psmouse,
317 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
319 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
328 * See also the SYN_ID_* macros
330 static int synaptics_identify(struct psmouse *psmouse)
332 struct synaptics_data *priv = psmouse->private;
335 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
337 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
338 if (SYN_ID_IS_SYNAPTICS(priv->identity))
344 * Read touchpad resolution and maximum reported coordinates
345 * Resolution is left zero if touchpad does not support the query
348 static int synaptics_resolution(struct psmouse *psmouse)
350 struct synaptics_data *priv = psmouse->private;
351 unsigned char resp[3];
354 if (SYN_ID_MAJOR(priv->identity) < 4)
357 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
358 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
359 priv->x_res = resp[0]; /* x resolution in units/mm */
360 priv->y_res = resp[2]; /* y resolution in units/mm */
364 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
365 if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
366 priv->x_min = min_max_pnpid_table[i].x_min;
367 priv->x_max = min_max_pnpid_table[i].x_max;
368 priv->y_min = min_max_pnpid_table[i].y_min;
369 priv->y_max = min_max_pnpid_table[i].y_max;
374 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
375 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
376 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
377 psmouse_warn(psmouse,
378 "device claims to have max coordinates query, but I'm not able to read it.\n");
380 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
381 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
385 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
386 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
387 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
388 psmouse_warn(psmouse,
389 "device claims to have min coordinates query, but I'm not able to read it.\n");
391 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
392 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
399 static int synaptics_query_hardware(struct psmouse *psmouse)
401 if (synaptics_identify(psmouse))
403 if (synaptics_model_id(psmouse))
405 if (synaptics_firmware_id(psmouse))
407 if (synaptics_board_id(psmouse))
409 if (synaptics_capability(psmouse))
411 if (synaptics_resolution(psmouse))
417 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
419 static unsigned char param = 0xc8;
420 struct synaptics_data *priv = psmouse->private;
422 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
423 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
426 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
429 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
432 /* Advanced gesture mode also sends multi finger data */
433 priv->capabilities |= BIT(1);
438 static int synaptics_set_mode(struct psmouse *psmouse)
440 struct synaptics_data *priv = psmouse->private;
443 if (priv->absolute_mode)
444 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
445 if (priv->disable_gesture)
446 priv->mode |= SYN_BIT_DISABLE_GESTURE;
447 if (psmouse->rate >= 80)
448 priv->mode |= SYN_BIT_HIGH_RATE;
449 if (SYN_CAP_EXTENDED(priv->capabilities))
450 priv->mode |= SYN_BIT_W_MODE;
452 if (synaptics_mode_cmd(psmouse, priv->mode))
455 if (priv->absolute_mode &&
456 synaptics_set_advanced_gesture_mode(psmouse)) {
457 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
464 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
466 struct synaptics_data *priv = psmouse->private;
469 priv->mode |= SYN_BIT_HIGH_RATE;
472 priv->mode &= ~SYN_BIT_HIGH_RATE;
476 synaptics_mode_cmd(psmouse, priv->mode);
479 /*****************************************************************************
480 * Synaptics pass-through PS/2 port support
481 ****************************************************************************/
482 static int synaptics_pt_write(struct serio *serio, unsigned char c)
484 struct psmouse *parent = serio_get_drvdata(serio->parent);
485 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
487 if (psmouse_sliced_command(parent, c))
489 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
494 static int synaptics_pt_start(struct serio *serio)
496 struct psmouse *parent = serio_get_drvdata(serio->parent);
497 struct synaptics_data *priv = parent->private;
499 serio_pause_rx(parent->ps2dev.serio);
500 priv->pt_port = serio;
501 serio_continue_rx(parent->ps2dev.serio);
506 static void synaptics_pt_stop(struct serio *serio)
508 struct psmouse *parent = serio_get_drvdata(serio->parent);
509 struct synaptics_data *priv = parent->private;
511 serio_pause_rx(parent->ps2dev.serio);
512 priv->pt_port = NULL;
513 serio_continue_rx(parent->ps2dev.serio);
516 static int synaptics_is_pt_packet(unsigned char *buf)
518 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
521 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
523 struct psmouse *child = serio_get_drvdata(ptport);
525 if (child && child->state == PSMOUSE_ACTIVATED) {
526 serio_interrupt(ptport, packet[1], 0);
527 serio_interrupt(ptport, packet[4], 0);
528 serio_interrupt(ptport, packet[5], 0);
529 if (child->pktsize == 4)
530 serio_interrupt(ptport, packet[2], 0);
532 serio_interrupt(ptport, packet[1], 0);
535 static void synaptics_pt_activate(struct psmouse *psmouse)
537 struct synaptics_data *priv = psmouse->private;
538 struct psmouse *child = serio_get_drvdata(priv->pt_port);
540 /* adjust the touchpad to child's choice of protocol */
542 if (child->pktsize == 4)
543 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
545 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
547 if (synaptics_mode_cmd(psmouse, priv->mode))
548 psmouse_warn(psmouse,
549 "failed to switch guest protocol\n");
553 static void synaptics_pt_create(struct psmouse *psmouse)
557 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
560 "not enough memory for pass-through port\n");
564 serio->id.type = SERIO_PS_PSTHRU;
565 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
566 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
567 serio->write = synaptics_pt_write;
568 serio->start = synaptics_pt_start;
569 serio->stop = synaptics_pt_stop;
570 serio->parent = psmouse->ps2dev.serio;
572 psmouse->pt_activate = synaptics_pt_activate;
574 psmouse_info(psmouse, "serio: %s port at %s\n",
575 serio->name, psmouse->phys);
576 serio_register_port(serio);
579 /*****************************************************************************
580 * Functions to interpret the absolute mode packets
581 ****************************************************************************/
583 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
586 state->count = count;
591 static void synaptics_parse_agm(const unsigned char buf[],
592 struct synaptics_data *priv,
593 struct synaptics_hw_state *hw)
595 struct synaptics_hw_state *agm = &priv->agm;
598 agm_packet_type = (buf[5] & 0x30) >> 4;
599 switch (agm_packet_type) {
601 /* Gesture packet: (x, y, z) half resolution */
603 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
604 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
605 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
609 /* AGM-CONTACT packet: (count, sgm, agm) */
610 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
617 /* Record that at least one AGM has been received since last SGM */
618 priv->agm_pending = true;
621 static int synaptics_parse_hw_state(const unsigned char buf[],
622 struct synaptics_data *priv,
623 struct synaptics_hw_state *hw)
625 memset(hw, 0, sizeof(struct synaptics_hw_state));
627 if (SYN_MODEL_NEWABS(priv->model_id)) {
628 hw->w = (((buf[0] & 0x30) >> 2) |
629 ((buf[0] & 0x04) >> 1) |
630 ((buf[3] & 0x04) >> 2));
632 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
633 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
635 synaptics_parse_agm(buf, priv, hw);
639 hw->x = (((buf[3] & 0x10) << 8) |
640 ((buf[1] & 0x0f) << 8) |
642 hw->y = (((buf[3] & 0x20) << 7) |
643 ((buf[1] & 0xf0) << 4) |
647 hw->left = (buf[0] & 0x01) ? 1 : 0;
648 hw->right = (buf[0] & 0x02) ? 1 : 0;
650 if (SYN_CAP_FORCEPAD(priv->ext_cap_0c)) {
652 * ForcePads, like Clickpads, use middle button
653 * bits to report primary button clicks.
654 * Unfortunately they report primary button not
655 * only when user presses on the pad above certain
656 * threshold, but also when there are more than one
657 * finger on the touchpad, which interferes with
658 * out multi-finger gestures.
662 priv->press = priv->report_press = false;
663 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
665 * Single-finger touch with pressure above
666 * the threshold. If pressure stays long
667 * enough, we'll start reporting primary
668 * button. We rely on the device continuing
669 * sending data even if finger does not
673 priv->press_start = jiffies;
675 } else if (time_after(jiffies,
677 msecs_to_jiffies(50))) {
678 priv->report_press = true;
684 hw->left = priv->report_press;
686 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
688 * Clickpad's button is transmitted as middle button,
689 * however, since it is primary button, we will report
692 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
694 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
695 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
697 hw->scroll = (signed char)(buf[1]);
700 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
701 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
702 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
705 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
706 ((buf[0] ^ buf[3]) & 0x02)) {
707 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
710 * if nExtBtn is greater than 8 it should be
711 * considered invalid and treated as 0
715 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
716 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
718 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
719 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
721 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
722 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
724 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
725 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
729 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
730 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
732 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
733 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
735 hw->left = (buf[0] & 0x01) ? 1 : 0;
736 hw->right = (buf[0] & 0x02) ? 1 : 0;
740 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
741 * is used by some firmware to indicate a finger at the edge of
742 * the touchpad whose precise position cannot be determined, so
743 * convert these values to the maximum axis value.
745 if (hw->x > X_MAX_POSITIVE)
746 hw->x -= 1 << ABS_POS_BITS;
747 else if (hw->x == X_MAX_POSITIVE)
750 if (hw->y > Y_MAX_POSITIVE)
751 hw->y -= 1 << ABS_POS_BITS;
752 else if (hw->y == Y_MAX_POSITIVE)
758 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
759 bool active, int x, int y)
761 input_mt_slot(dev, slot);
762 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
764 input_report_abs(dev, ABS_MT_POSITION_X, x);
765 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
769 static void synaptics_report_semi_mt_data(struct input_dev *dev,
770 const struct synaptics_hw_state *a,
771 const struct synaptics_hw_state *b,
774 if (num_fingers >= 2) {
775 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
777 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
779 } else if (num_fingers == 1) {
780 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
781 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
783 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
784 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
788 static void synaptics_report_buttons(struct psmouse *psmouse,
789 const struct synaptics_hw_state *hw)
791 struct input_dev *dev = psmouse->dev;
792 struct synaptics_data *priv = psmouse->private;
795 input_report_key(dev, BTN_LEFT, hw->left);
796 input_report_key(dev, BTN_RIGHT, hw->right);
798 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
799 input_report_key(dev, BTN_MIDDLE, hw->middle);
801 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
802 input_report_key(dev, BTN_FORWARD, hw->up);
803 input_report_key(dev, BTN_BACK, hw->down);
806 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
807 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
810 static void synaptics_report_slot(struct input_dev *dev, int slot,
811 const struct synaptics_hw_state *hw)
813 input_mt_slot(dev, slot);
814 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
818 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
819 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
820 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
823 static void synaptics_report_mt_data(struct psmouse *psmouse,
824 struct synaptics_mt_state *mt_state,
825 const struct synaptics_hw_state *sgm)
827 struct input_dev *dev = psmouse->dev;
828 struct synaptics_data *priv = psmouse->private;
829 struct synaptics_hw_state *agm = &priv->agm;
830 struct synaptics_mt_state *old = &priv->mt_state;
832 switch (mt_state->count) {
834 synaptics_report_slot(dev, 0, NULL);
835 synaptics_report_slot(dev, 1, NULL);
838 if (mt_state->sgm == -1) {
839 synaptics_report_slot(dev, 0, NULL);
840 synaptics_report_slot(dev, 1, NULL);
841 } else if (mt_state->sgm == 0) {
842 synaptics_report_slot(dev, 0, sgm);
843 synaptics_report_slot(dev, 1, NULL);
845 synaptics_report_slot(dev, 0, NULL);
846 synaptics_report_slot(dev, 1, sgm);
851 * If the finger slot contained in SGM is valid, and either
852 * hasn't changed, or is new, or the old SGM has now moved to
853 * AGM, then report SGM in MTB slot 0.
854 * Otherwise, empty MTB slot 0.
856 if (mt_state->sgm != -1 &&
857 (mt_state->sgm == old->sgm ||
858 old->sgm == -1 || mt_state->agm == old->sgm))
859 synaptics_report_slot(dev, 0, sgm);
861 synaptics_report_slot(dev, 0, NULL);
864 * If the finger slot contained in AGM is valid, and either
865 * hasn't changed, or is new, then report AGM in MTB slot 1.
866 * Otherwise, empty MTB slot 1.
868 * However, in the case where the AGM is new, make sure that
869 * that it is either the same as the old SGM, or there was no
872 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
873 * the new AGM will keep the old SGM's tracking ID, which can
874 * cause apparent drumroll. This happens if in the following
875 * valid finger sequence:
877 * Action SGM AGM (MTB slot:Contact)
878 * 1. Touch contact 0 (0:0)
879 * 2. Touch contact 1 (0:0, 1:1)
880 * 3. Lift contact 0 (1:1)
881 * 4. Touch contacts 2,3 (0:2, 1:3)
883 * In step 4, contact 3, in AGM must not be given the same
884 * tracking ID as contact 1 had in step 3. To avoid this,
885 * the first agm with contact 3 is dropped and slot 1 is
886 * invalidated (tracking ID = -1).
888 if (mt_state->agm != -1 &&
889 (mt_state->agm == old->agm ||
891 (old->sgm == -1 || mt_state->agm == old->sgm))))
892 synaptics_report_slot(dev, 1, agm);
894 synaptics_report_slot(dev, 1, NULL);
898 /* Don't use active slot count to generate BTN_TOOL events. */
899 input_mt_report_pointer_emulation(dev, false);
901 /* Send the number of fingers reported by touchpad itself. */
902 input_mt_report_finger_count(dev, mt_state->count);
904 synaptics_report_buttons(psmouse, sgm);
909 /* Handle case where mt_state->count = 0 */
910 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
911 struct synaptics_mt_state *mt_state)
913 synaptics_mt_state_set(mt_state, 0, -1, -1);
914 priv->mt_state_lost = false;
917 /* Handle case where mt_state->count = 1 */
918 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
919 struct synaptics_mt_state *mt_state)
921 struct synaptics_hw_state *agm = &priv->agm;
922 struct synaptics_mt_state *old = &priv->mt_state;
925 * If the last AGM was (0,0,0), and there is only one finger left,
926 * then we absolutely know that SGM contains slot 0, and all other
927 * fingers have been removed.
929 if (priv->agm_pending && agm->z == 0) {
930 synaptics_mt_state_set(mt_state, 1, 0, -1);
931 priv->mt_state_lost = false;
935 switch (old->count) {
937 synaptics_mt_state_set(mt_state, 1, 0, -1);
941 * If mt_state_lost, then the previous transition was 3->1,
942 * and SGM now contains either slot 0 or 1, but we don't know
943 * which. So, we just assume that the SGM now contains slot 1.
945 * If pending AGM and either:
946 * (a) the previous SGM slot contains slot 0, or
947 * (b) there was no SGM slot
948 * then, the SGM now contains slot 1
950 * Case (a) happens with very rapid "drum roll" gestures, where
951 * slot 0 finger is lifted and a new slot 1 finger touches
952 * within one reporting interval.
954 * Case (b) happens if initially two or more fingers tap
955 * briefly, and all but one lift before the end of the first
956 * reporting interval.
958 * (In both these cases, slot 0 will becomes empty, so SGM
959 * contains slot 1 with the new finger)
961 * Else, if there was no previous SGM, it now contains slot 0.
963 * Otherwise, SGM still contains the same slot.
965 if (priv->mt_state_lost ||
966 (priv->agm_pending && old->sgm <= 0))
967 synaptics_mt_state_set(mt_state, 1, 1, -1);
968 else if (old->sgm == -1)
969 synaptics_mt_state_set(mt_state, 1, 0, -1);
973 * If mt_state_lost, we don't know which finger SGM contains.
975 * So, report 1 finger, but with both slots empty.
976 * We will use slot 1 on subsequent 1->1
978 if (priv->mt_state_lost) {
979 synaptics_mt_state_set(mt_state, 1, -1, -1);
983 * Since the last AGM was NOT (0,0,0), it was the finger in
984 * slot 0 that has been removed.
985 * So, SGM now contains previous AGM's slot, and AGM is now
988 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
992 * Since last AGM was not (0,0,0), we don't know which finger
995 * So, report 1 finger, but with both slots empty.
996 * We will use slot 1 on subsequent 1->1
998 synaptics_mt_state_set(mt_state, 1, -1, -1);
999 priv->mt_state_lost = true;
1003 /* mt_state was updated by AGM-CONTACT packet */
1008 /* Handle case where mt_state->count = 2 */
1009 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
1010 struct synaptics_mt_state *mt_state)
1012 struct synaptics_mt_state *old = &priv->mt_state;
1014 switch (old->count) {
1016 synaptics_mt_state_set(mt_state, 2, 0, 1);
1020 * If previous SGM contained slot 1 or higher, SGM now contains
1021 * slot 0 (the newly touching finger) and AGM contains SGM's
1024 * Otherwise, SGM still contains slot 0 and AGM now contains
1028 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
1030 synaptics_mt_state_set(mt_state, 2, 0, 1);
1034 * If mt_state_lost, SGM now contains either finger 1 or 2, but
1035 * we don't know which.
1036 * So, we just assume that the SGM contains slot 0 and AGM 1.
1038 if (priv->mt_state_lost)
1039 synaptics_mt_state_set(mt_state, 2, 0, 1);
1041 * Otherwise, use the same mt_state, since it either hasn't
1042 * changed, or was updated by a recently received AGM-CONTACT
1048 * 3->2 transitions have two unsolvable problems:
1049 * 1) no indication is given which finger was removed
1050 * 2) no way to tell if agm packet was for finger 3
1051 * before 3->2, or finger 2 after 3->2.
1053 * So, report 2 fingers, but empty all slots.
1054 * We will guess slots [0,1] on subsequent 2->2.
1056 synaptics_mt_state_set(mt_state, 2, -1, -1);
1057 priv->mt_state_lost = true;
1061 /* mt_state was updated by AGM-CONTACT packet */
1066 /* Handle case where mt_state->count = 3 */
1067 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1068 struct synaptics_mt_state *mt_state)
1070 struct synaptics_mt_state *old = &priv->mt_state;
1072 switch (old->count) {
1074 synaptics_mt_state_set(mt_state, 3, 0, 2);
1078 * If previous SGM contained slot 2 or higher, SGM now contains
1079 * slot 0 (one of the newly touching fingers) and AGM contains
1080 * SGM's previous slot.
1082 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1085 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1087 synaptics_mt_state_set(mt_state, 3, 0, 2);
1091 * If the AGM previously contained slot 3 or higher, then the
1092 * newly touching finger is in the lowest available slot.
1094 * If SGM was previously 1 or higher, then the new SGM is
1095 * now slot 0 (with a new finger), otherwise, the new finger
1096 * is now in a hidden slot between 0 and AGM's slot.
1098 * In all such cases, the SGM now contains slot 0, and the AGM
1099 * continues to contain the same slot as before.
1101 if (old->agm >= 3) {
1102 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1107 * After some 3->1 and all 3->2 transitions, we lose track
1108 * of which slot is reported by SGM and AGM.
1110 * For 2->3 in this state, report 3 fingers, but empty all
1111 * slots, and we will guess (0,2) on a subsequent 0->3.
1113 * To userspace, the resulting transition will look like:
1114 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1116 if (priv->mt_state_lost) {
1117 synaptics_mt_state_set(mt_state, 3, -1, -1);
1122 * If the (SGM,AGM) really previously contained slots (0, 1),
1123 * then we cannot know what slot was just reported by the AGM,
1124 * because the 2->3 transition can occur either before or after
1125 * the AGM packet. Thus, this most recent AGM could contain
1126 * either the same old slot 1 or the new slot 2.
1127 * Subsequent AGMs will be reporting slot 2.
1129 * To userspace, the resulting transition will look like:
1130 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1132 synaptics_mt_state_set(mt_state, 3, 0, -1);
1136 * If, for whatever reason, the previous agm was invalid,
1137 * Assume SGM now contains slot 0, AGM now contains slot 2.
1140 synaptics_mt_state_set(mt_state, 3, 0, 2);
1142 * mt_state either hasn't changed, or was updated by a recently
1143 * received AGM-CONTACT packet.
1149 /* mt_state was updated by AGM-CONTACT packet */
1154 /* Handle case where mt_state->count = 4, or = 5 */
1155 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1156 struct synaptics_mt_state *mt_state)
1158 /* mt_state was updated correctly by AGM-CONTACT packet */
1159 priv->mt_state_lost = false;
1162 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1163 struct synaptics_hw_state *sgm)
1165 struct synaptics_data *priv = psmouse->private;
1166 struct synaptics_hw_state *agm = &priv->agm;
1167 struct synaptics_mt_state mt_state;
1169 /* Initialize using current mt_state (as updated by last agm) */
1170 mt_state = agm->mt_state;
1173 * Update mt_state using the new finger count and current mt_state.
1176 synaptics_image_sensor_0f(priv, &mt_state);
1177 else if (sgm->w >= 4)
1178 synaptics_image_sensor_1f(priv, &mt_state);
1179 else if (sgm->w == 0)
1180 synaptics_image_sensor_2f(priv, &mt_state);
1181 else if (sgm->w == 1 && mt_state.count <= 3)
1182 synaptics_image_sensor_3f(priv, &mt_state);
1184 synaptics_image_sensor_45f(priv, &mt_state);
1186 /* Send resulting input events to user space */
1187 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1189 /* Store updated mt_state */
1190 priv->mt_state = agm->mt_state = mt_state;
1191 priv->agm_pending = false;
1194 static void synaptics_profile_sensor_process(struct psmouse *psmouse,
1195 struct synaptics_hw_state *sgm,
1198 struct input_dev *dev = psmouse->dev;
1199 struct synaptics_data *priv = psmouse->private;
1200 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
1201 struct input_mt_pos pos[2];
1202 int slot[2], nsemi, i;
1204 nsemi = clamp_val(num_fingers, 0, 2);
1206 for (i = 0; i < nsemi; i++) {
1207 pos[i].x = hw[i]->x;
1208 pos[i].y = synaptics_invert_y(hw[i]->y);
1211 input_mt_assign_slots(dev, slot, pos, nsemi);
1213 for (i = 0; i < nsemi; i++) {
1214 input_mt_slot(dev, slot[i]);
1215 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1216 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1217 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1218 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1221 input_mt_drop_unused(dev);
1222 input_mt_report_pointer_emulation(dev, false);
1223 input_mt_report_finger_count(dev, num_fingers);
1225 synaptics_report_buttons(psmouse, sgm);
1231 * called for each full received packet from the touchpad
1233 static void synaptics_process_packet(struct psmouse *psmouse)
1235 struct input_dev *dev = psmouse->dev;
1236 struct synaptics_data *priv = psmouse->private;
1237 struct synaptics_hw_state hw;
1241 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1244 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1245 synaptics_image_sensor_process(psmouse, &hw);
1250 priv->scroll += hw.scroll;
1252 while (priv->scroll >= 4) {
1253 input_report_key(dev, BTN_BACK, !hw.down);
1255 input_report_key(dev, BTN_BACK, hw.down);
1259 while (priv->scroll <= -4) {
1260 input_report_key(dev, BTN_FORWARD, !hw.up);
1262 input_report_key(dev, BTN_FORWARD, hw.up);
1269 if (hw.z > 0 && hw.x > 1) {
1272 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1275 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1276 num_fingers = hw.w + 2;
1279 if (SYN_MODEL_PEN(priv->model_id))
1280 ; /* Nothing, treat a pen as a single finger */
1283 if (SYN_CAP_PALMDETECT(priv->capabilities))
1284 finger_width = hw.w;
1293 if (cr48_profile_sensor) {
1294 synaptics_profile_sensor_process(psmouse, &hw, num_fingers);
1298 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1299 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1303 * BTN_TOUCH has to be first as mousedev relies on it when doing
1304 * absolute -> relative conversion
1306 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1307 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1309 if (num_fingers > 0) {
1310 input_report_abs(dev, ABS_X, hw.x);
1311 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1313 input_report_abs(dev, ABS_PRESSURE, hw.z);
1315 if (SYN_CAP_PALMDETECT(priv->capabilities))
1316 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1318 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1319 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1320 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1321 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1324 synaptics_report_buttons(psmouse, &hw);
1329 static int synaptics_validate_byte(struct psmouse *psmouse,
1330 int idx, unsigned char pkt_type)
1332 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1333 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1334 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1335 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1336 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1337 const char *packet = psmouse->packet;
1339 if (idx < 0 || idx > 4)
1345 case SYN_NEWABS_RELAXED:
1346 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1348 case SYN_NEWABS_STRICT:
1349 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1352 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1355 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1360 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1364 for (i = 0; i < 5; i++)
1365 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1366 psmouse_info(psmouse, "using relaxed packet validation\n");
1367 return SYN_NEWABS_RELAXED;
1370 return SYN_NEWABS_STRICT;
1373 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1375 struct synaptics_data *priv = psmouse->private;
1377 if (psmouse->pktcnt >= 6) { /* Full packet received */
1378 if (unlikely(priv->pkt_type == SYN_NEWABS))
1379 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1381 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1382 synaptics_is_pt_packet(psmouse->packet)) {
1384 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1386 synaptics_process_packet(psmouse);
1388 return PSMOUSE_FULL_PACKET;
1391 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1392 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1395 /*****************************************************************************
1396 * Driver initialization/cleanup functions
1397 ****************************************************************************/
1398 static void set_abs_position_params(struct input_dev *dev,
1399 struct synaptics_data *priv, int x_code,
1402 int x_min = priv->x_min ?: XMIN_NOMINAL;
1403 int x_max = priv->x_max ?: XMAX_NOMINAL;
1404 int y_min = priv->y_min ?: YMIN_NOMINAL;
1405 int y_max = priv->y_max ?: YMAX_NOMINAL;
1406 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1407 SYN_REDUCED_FILTER_FUZZ : 0;
1409 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1410 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1411 input_abs_set_res(dev, x_code, priv->x_res);
1412 input_abs_set_res(dev, y_code, priv->y_res);
1415 static void set_input_params(struct psmouse *psmouse,
1416 struct synaptics_data *priv)
1418 struct input_dev *dev = psmouse->dev;
1421 /* Things that apply to both modes */
1422 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1423 __set_bit(EV_KEY, dev->evbit);
1424 __set_bit(BTN_LEFT, dev->keybit);
1425 __set_bit(BTN_RIGHT, dev->keybit);
1427 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1428 __set_bit(BTN_MIDDLE, dev->keybit);
1430 if (!priv->absolute_mode) {
1432 __set_bit(EV_REL, dev->evbit);
1433 __set_bit(REL_X, dev->relbit);
1434 __set_bit(REL_Y, dev->relbit);
1439 __set_bit(EV_ABS, dev->evbit);
1440 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1441 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1443 if (cr48_profile_sensor)
1444 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1446 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1447 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1449 /* Image sensors can report per-contact pressure */
1450 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1451 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1453 /* Image sensors can signal 4 and 5 finger clicks */
1454 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1455 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1456 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1457 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1460 * Profile sensor in CR-48 tracks contacts reasonably well,
1461 * other non-image sensors with AGM use semi-mt.
1463 input_mt_init_slots(dev, 2,
1465 (cr48_profile_sensor ?
1466 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1469 if (SYN_CAP_PALMDETECT(priv->capabilities))
1470 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1472 __set_bit(BTN_TOUCH, dev->keybit);
1473 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1475 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1476 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1477 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1480 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1481 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1482 __set_bit(BTN_FORWARD, dev->keybit);
1483 __set_bit(BTN_BACK, dev->keybit);
1486 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1487 __set_bit(BTN_0 + i, dev->keybit);
1489 __clear_bit(EV_REL, dev->evbit);
1490 __clear_bit(REL_X, dev->relbit);
1491 __clear_bit(REL_Y, dev->relbit);
1493 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1494 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1495 if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1496 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1497 /* Clickpads report only left button */
1498 __clear_bit(BTN_RIGHT, dev->keybit);
1499 __clear_bit(BTN_MIDDLE, dev->keybit);
1503 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1504 void *data, char *buf)
1506 struct synaptics_data *priv = psmouse->private;
1508 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1511 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1512 void *data, const char *buf,
1515 struct synaptics_data *priv = psmouse->private;
1519 err = kstrtouint(buf, 10, &value);
1526 if (value == priv->disable_gesture)
1529 priv->disable_gesture = value;
1531 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1533 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1535 if (synaptics_mode_cmd(psmouse, priv->mode))
1541 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1542 synaptics_show_disable_gesture,
1543 synaptics_set_disable_gesture);
1545 static void synaptics_disconnect(struct psmouse *psmouse)
1547 struct synaptics_data *priv = psmouse->private;
1549 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1550 device_remove_file(&psmouse->ps2dev.serio->dev,
1551 &psmouse_attr_disable_gesture.dattr);
1553 synaptics_reset(psmouse);
1555 psmouse->private = NULL;
1558 static int synaptics_reconnect(struct psmouse *psmouse)
1560 struct synaptics_data *priv = psmouse->private;
1561 struct synaptics_data old_priv = *priv;
1562 unsigned char param[2];
1567 psmouse_reset(psmouse);
1570 * On some boxes, right after resuming, the touchpad
1571 * needs some time to finish initializing (I assume
1572 * it needs time to calibrate) and start responding
1573 * to Synaptics-specific queries, so let's wait a
1578 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1579 error = synaptics_detect(psmouse, 0);
1580 } while (error && ++retry < 3);
1586 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1588 if (synaptics_query_hardware(psmouse)) {
1589 psmouse_err(psmouse, "Unable to query device.\n");
1593 if (synaptics_set_mode(psmouse)) {
1594 psmouse_err(psmouse, "Unable to initialize device.\n");
1598 if (old_priv.identity != priv->identity ||
1599 old_priv.model_id != priv->model_id ||
1600 old_priv.capabilities != priv->capabilities ||
1601 old_priv.ext_cap != priv->ext_cap) {
1602 psmouse_err(psmouse,
1603 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1604 old_priv.identity, priv->identity,
1605 old_priv.model_id, priv->model_id,
1606 old_priv.capabilities, priv->capabilities,
1607 old_priv.ext_cap, priv->ext_cap);
1614 static bool impaired_toshiba_kbc;
1616 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1617 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1619 /* Toshiba Satellite */
1621 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1622 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1626 /* Toshiba Dynabook */
1628 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1629 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1633 /* Toshiba Portege M300 */
1635 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1636 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1641 /* Toshiba Portege M300 */
1643 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1644 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1645 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1653 static bool broken_olpc_ec;
1655 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1656 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1658 /* OLPC XO-1 or XO-1.5 */
1660 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1661 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1668 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1669 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1671 /* Cr-48 Chromebook (Codename Mario) */
1673 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1674 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1681 void __init synaptics_module_init(void)
1683 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1684 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1685 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1688 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1690 struct synaptics_data *priv;
1694 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1695 * packet spew overloads the EC such that key presses on the keyboard
1696 * are missed. Given that, don't even attempt to use Absolute mode.
1697 * Relative mode seems to work just fine.
1699 if (absolute_mode && broken_olpc_ec) {
1700 psmouse_info(psmouse,
1701 "OLPC XO detected, not enabling Synaptics protocol.\n");
1705 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1709 psmouse_reset(psmouse);
1711 if (synaptics_query_hardware(psmouse)) {
1712 psmouse_err(psmouse, "Unable to query device.\n");
1716 priv->absolute_mode = absolute_mode;
1717 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1718 priv->disable_gesture = true;
1720 if (synaptics_set_mode(psmouse)) {
1721 psmouse_err(psmouse, "Unable to initialize device.\n");
1725 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1727 psmouse_info(psmouse,
1728 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1729 SYN_ID_MODEL(priv->identity),
1730 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1732 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1733 priv->board_id, priv->firmware_id);
1735 set_input_params(psmouse, priv);
1738 * Encode touchpad model so that it can be used to set
1739 * input device->id.version and be visible to userspace.
1740 * Because version is __u16 we have to drop something.
1741 * Hardware info bits seem to be good candidates as they
1742 * are documented to be for Synaptics corp. internal use.
1744 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1745 (priv->model_id & 0x000000ff);
1747 if (absolute_mode) {
1748 psmouse->protocol_handler = synaptics_process_byte;
1749 psmouse->pktsize = 6;
1751 /* Relative mode follows standard PS/2 mouse protocol */
1752 psmouse->protocol_handler = psmouse_process_byte;
1753 psmouse->pktsize = 3;
1756 psmouse->set_rate = synaptics_set_rate;
1757 psmouse->disconnect = synaptics_disconnect;
1758 psmouse->reconnect = synaptics_reconnect;
1759 psmouse->cleanup = synaptics_reset;
1760 /* Synaptics can usually stay in sync without extra help */
1761 psmouse->resync_time = 0;
1763 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1764 synaptics_pt_create(psmouse);
1767 * Toshiba's KBC seems to have trouble handling data from
1768 * Synaptics at full rate. Switch to a lower rate (roughly
1769 * the same rate as a standard PS/2 mouse).
1771 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1772 psmouse_info(psmouse,
1773 "Toshiba %s detected, limiting rate to 40pps.\n",
1774 dmi_get_system_info(DMI_PRODUCT_NAME));
1778 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1779 err = device_create_file(&psmouse->ps2dev.serio->dev,
1780 &psmouse_attr_disable_gesture.dattr);
1782 psmouse_err(psmouse,
1783 "Failed to create disable_gesture attribute (%d)",
1796 int synaptics_init(struct psmouse *psmouse)
1798 return __synaptics_init(psmouse, true);
1801 int synaptics_init_relative(struct psmouse *psmouse)
1803 return __synaptics_init(psmouse, false);
1806 bool synaptics_supported(void)
1811 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1813 void __init synaptics_module_init(void)
1817 int synaptics_init(struct psmouse *psmouse)
1822 bool synaptics_supported(void)
1827 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */