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 hw->left = (buf[0] & 0x01) ? 1 : 0;
622 hw->right = (buf[0] & 0x02) ? 1 : 0;
624 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
626 * Clickpad's button is transmitted as middle button,
627 * however, since it is primary button, we will report
630 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
632 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
633 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
635 hw->scroll = (signed char)(buf[1]);
638 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
639 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
640 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
643 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
644 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
646 synaptics_parse_agm(buf, priv, hw);
650 hw->x = (((buf[3] & 0x10) << 8) |
651 ((buf[1] & 0x0f) << 8) |
653 hw->y = (((buf[3] & 0x20) << 7) |
654 ((buf[1] & 0xf0) << 4) |
658 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
659 ((buf[0] ^ buf[3]) & 0x02)) {
660 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
663 * if nExtBtn is greater than 8 it should be
664 * considered invalid and treated as 0
668 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
669 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
671 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
672 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
674 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
675 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
677 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
678 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
682 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
683 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
685 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
686 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
688 hw->left = (buf[0] & 0x01) ? 1 : 0;
689 hw->right = (buf[0] & 0x02) ? 1 : 0;
693 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
694 * is used by some firmware to indicate a finger at the edge of
695 * the touchpad whose precise position cannot be determined, so
696 * convert these values to the maximum axis value.
698 if (hw->x > X_MAX_POSITIVE)
699 hw->x -= 1 << ABS_POS_BITS;
700 else if (hw->x == X_MAX_POSITIVE)
703 if (hw->y > Y_MAX_POSITIVE)
704 hw->y -= 1 << ABS_POS_BITS;
705 else if (hw->y == Y_MAX_POSITIVE)
711 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
712 bool active, int x, int y)
714 input_mt_slot(dev, slot);
715 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
717 input_report_abs(dev, ABS_MT_POSITION_X, x);
718 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
722 static void synaptics_report_semi_mt_data(struct input_dev *dev,
723 const struct synaptics_hw_state *a,
724 const struct synaptics_hw_state *b,
727 if (num_fingers >= 2) {
728 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
730 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
732 } else if (num_fingers == 1) {
733 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
734 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
736 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
737 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
741 static void synaptics_report_buttons(struct psmouse *psmouse,
742 const struct synaptics_hw_state *hw)
744 struct input_dev *dev = psmouse->dev;
745 struct synaptics_data *priv = psmouse->private;
748 input_report_key(dev, BTN_LEFT, hw->left);
749 input_report_key(dev, BTN_RIGHT, hw->right);
751 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
752 input_report_key(dev, BTN_MIDDLE, hw->middle);
754 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
755 input_report_key(dev, BTN_FORWARD, hw->up);
756 input_report_key(dev, BTN_BACK, hw->down);
759 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
760 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
763 static void synaptics_report_slot(struct input_dev *dev, int slot,
764 const struct synaptics_hw_state *hw)
766 input_mt_slot(dev, slot);
767 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
771 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
772 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
773 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
776 static void synaptics_report_mt_data(struct psmouse *psmouse,
777 struct synaptics_mt_state *mt_state,
778 const struct synaptics_hw_state *sgm)
780 struct input_dev *dev = psmouse->dev;
781 struct synaptics_data *priv = psmouse->private;
782 struct synaptics_hw_state *agm = &priv->agm;
783 struct synaptics_mt_state *old = &priv->mt_state;
785 switch (mt_state->count) {
787 synaptics_report_slot(dev, 0, NULL);
788 synaptics_report_slot(dev, 1, NULL);
791 if (mt_state->sgm == -1) {
792 synaptics_report_slot(dev, 0, NULL);
793 synaptics_report_slot(dev, 1, NULL);
794 } else if (mt_state->sgm == 0) {
795 synaptics_report_slot(dev, 0, sgm);
796 synaptics_report_slot(dev, 1, NULL);
798 synaptics_report_slot(dev, 0, NULL);
799 synaptics_report_slot(dev, 1, sgm);
804 * If the finger slot contained in SGM is valid, and either
805 * hasn't changed, or is new, or the old SGM has now moved to
806 * AGM, then report SGM in MTB slot 0.
807 * Otherwise, empty MTB slot 0.
809 if (mt_state->sgm != -1 &&
810 (mt_state->sgm == old->sgm ||
811 old->sgm == -1 || mt_state->agm == old->sgm))
812 synaptics_report_slot(dev, 0, sgm);
814 synaptics_report_slot(dev, 0, NULL);
817 * If the finger slot contained in AGM is valid, and either
818 * hasn't changed, or is new, then report AGM in MTB slot 1.
819 * Otherwise, empty MTB slot 1.
821 * However, in the case where the AGM is new, make sure that
822 * that it is either the same as the old SGM, or there was no
825 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
826 * the new AGM will keep the old SGM's tracking ID, which can
827 * cause apparent drumroll. This happens if in the following
828 * valid finger sequence:
830 * Action SGM AGM (MTB slot:Contact)
831 * 1. Touch contact 0 (0:0)
832 * 2. Touch contact 1 (0:0, 1:1)
833 * 3. Lift contact 0 (1:1)
834 * 4. Touch contacts 2,3 (0:2, 1:3)
836 * In step 4, contact 3, in AGM must not be given the same
837 * tracking ID as contact 1 had in step 3. To avoid this,
838 * the first agm with contact 3 is dropped and slot 1 is
839 * invalidated (tracking ID = -1).
841 if (mt_state->agm != -1 &&
842 (mt_state->agm == old->agm ||
844 (old->sgm == -1 || mt_state->agm == old->sgm))))
845 synaptics_report_slot(dev, 1, agm);
847 synaptics_report_slot(dev, 1, NULL);
851 /* Don't use active slot count to generate BTN_TOOL events. */
852 input_mt_report_pointer_emulation(dev, false);
854 /* Send the number of fingers reported by touchpad itself. */
855 input_mt_report_finger_count(dev, mt_state->count);
857 synaptics_report_buttons(psmouse, sgm);
862 /* Handle case where mt_state->count = 0 */
863 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
864 struct synaptics_mt_state *mt_state)
866 synaptics_mt_state_set(mt_state, 0, -1, -1);
867 priv->mt_state_lost = false;
870 /* Handle case where mt_state->count = 1 */
871 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
872 struct synaptics_mt_state *mt_state)
874 struct synaptics_hw_state *agm = &priv->agm;
875 struct synaptics_mt_state *old = &priv->mt_state;
878 * If the last AGM was (0,0,0), and there is only one finger left,
879 * then we absolutely know that SGM contains slot 0, and all other
880 * fingers have been removed.
882 if (priv->agm_pending && agm->z == 0) {
883 synaptics_mt_state_set(mt_state, 1, 0, -1);
884 priv->mt_state_lost = false;
888 switch (old->count) {
890 synaptics_mt_state_set(mt_state, 1, 0, -1);
894 * If mt_state_lost, then the previous transition was 3->1,
895 * and SGM now contains either slot 0 or 1, but we don't know
896 * which. So, we just assume that the SGM now contains slot 1.
898 * If pending AGM and either:
899 * (a) the previous SGM slot contains slot 0, or
900 * (b) there was no SGM slot
901 * then, the SGM now contains slot 1
903 * Case (a) happens with very rapid "drum roll" gestures, where
904 * slot 0 finger is lifted and a new slot 1 finger touches
905 * within one reporting interval.
907 * Case (b) happens if initially two or more fingers tap
908 * briefly, and all but one lift before the end of the first
909 * reporting interval.
911 * (In both these cases, slot 0 will becomes empty, so SGM
912 * contains slot 1 with the new finger)
914 * Else, if there was no previous SGM, it now contains slot 0.
916 * Otherwise, SGM still contains the same slot.
918 if (priv->mt_state_lost ||
919 (priv->agm_pending && old->sgm <= 0))
920 synaptics_mt_state_set(mt_state, 1, 1, -1);
921 else if (old->sgm == -1)
922 synaptics_mt_state_set(mt_state, 1, 0, -1);
926 * If mt_state_lost, we don't know which finger SGM contains.
928 * So, report 1 finger, but with both slots empty.
929 * We will use slot 1 on subsequent 1->1
931 if (priv->mt_state_lost) {
932 synaptics_mt_state_set(mt_state, 1, -1, -1);
936 * Since the last AGM was NOT (0,0,0), it was the finger in
937 * slot 0 that has been removed.
938 * So, SGM now contains previous AGM's slot, and AGM is now
941 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
945 * Since last AGM was not (0,0,0), we don't know which finger
948 * So, report 1 finger, but with both slots empty.
949 * We will use slot 1 on subsequent 1->1
951 synaptics_mt_state_set(mt_state, 1, -1, -1);
952 priv->mt_state_lost = true;
956 /* mt_state was updated by AGM-CONTACT packet */
961 /* Handle case where mt_state->count = 2 */
962 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
963 struct synaptics_mt_state *mt_state)
965 struct synaptics_mt_state *old = &priv->mt_state;
967 switch (old->count) {
969 synaptics_mt_state_set(mt_state, 2, 0, 1);
973 * If previous SGM contained slot 1 or higher, SGM now contains
974 * slot 0 (the newly touching finger) and AGM contains SGM's
977 * Otherwise, SGM still contains slot 0 and AGM now contains
981 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
983 synaptics_mt_state_set(mt_state, 2, 0, 1);
987 * If mt_state_lost, SGM now contains either finger 1 or 2, but
988 * we don't know which.
989 * So, we just assume that the SGM contains slot 0 and AGM 1.
991 if (priv->mt_state_lost)
992 synaptics_mt_state_set(mt_state, 2, 0, 1);
994 * Otherwise, use the same mt_state, since it either hasn't
995 * changed, or was updated by a recently received AGM-CONTACT
1001 * 3->2 transitions have two unsolvable problems:
1002 * 1) no indication is given which finger was removed
1003 * 2) no way to tell if agm packet was for finger 3
1004 * before 3->2, or finger 2 after 3->2.
1006 * So, report 2 fingers, but empty all slots.
1007 * We will guess slots [0,1] on subsequent 2->2.
1009 synaptics_mt_state_set(mt_state, 2, -1, -1);
1010 priv->mt_state_lost = true;
1014 /* mt_state was updated by AGM-CONTACT packet */
1019 /* Handle case where mt_state->count = 3 */
1020 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1021 struct synaptics_mt_state *mt_state)
1023 struct synaptics_mt_state *old = &priv->mt_state;
1025 switch (old->count) {
1027 synaptics_mt_state_set(mt_state, 3, 0, 2);
1031 * If previous SGM contained slot 2 or higher, SGM now contains
1032 * slot 0 (one of the newly touching fingers) and AGM contains
1033 * SGM's previous slot.
1035 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1038 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1040 synaptics_mt_state_set(mt_state, 3, 0, 2);
1044 * If the AGM previously contained slot 3 or higher, then the
1045 * newly touching finger is in the lowest available slot.
1047 * If SGM was previously 1 or higher, then the new SGM is
1048 * now slot 0 (with a new finger), otherwise, the new finger
1049 * is now in a hidden slot between 0 and AGM's slot.
1051 * In all such cases, the SGM now contains slot 0, and the AGM
1052 * continues to contain the same slot as before.
1054 if (old->agm >= 3) {
1055 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1060 * After some 3->1 and all 3->2 transitions, we lose track
1061 * of which slot is reported by SGM and AGM.
1063 * For 2->3 in this state, report 3 fingers, but empty all
1064 * slots, and we will guess (0,2) on a subsequent 0->3.
1066 * To userspace, the resulting transition will look like:
1067 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1069 if (priv->mt_state_lost) {
1070 synaptics_mt_state_set(mt_state, 3, -1, -1);
1075 * If the (SGM,AGM) really previously contained slots (0, 1),
1076 * then we cannot know what slot was just reported by the AGM,
1077 * because the 2->3 transition can occur either before or after
1078 * the AGM packet. Thus, this most recent AGM could contain
1079 * either the same old slot 1 or the new slot 2.
1080 * Subsequent AGMs will be reporting slot 2.
1082 * To userspace, the resulting transition will look like:
1083 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1085 synaptics_mt_state_set(mt_state, 3, 0, -1);
1089 * If, for whatever reason, the previous agm was invalid,
1090 * Assume SGM now contains slot 0, AGM now contains slot 2.
1093 synaptics_mt_state_set(mt_state, 3, 0, 2);
1095 * mt_state either hasn't changed, or was updated by a recently
1096 * received AGM-CONTACT packet.
1102 /* mt_state was updated by AGM-CONTACT packet */
1107 /* Handle case where mt_state->count = 4, or = 5 */
1108 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1109 struct synaptics_mt_state *mt_state)
1111 /* mt_state was updated correctly by AGM-CONTACT packet */
1112 priv->mt_state_lost = false;
1115 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1116 struct synaptics_hw_state *sgm)
1118 struct synaptics_data *priv = psmouse->private;
1119 struct synaptics_hw_state *agm = &priv->agm;
1120 struct synaptics_mt_state mt_state;
1122 /* Initialize using current mt_state (as updated by last agm) */
1123 mt_state = agm->mt_state;
1126 * Update mt_state using the new finger count and current mt_state.
1129 synaptics_image_sensor_0f(priv, &mt_state);
1130 else if (sgm->w >= 4)
1131 synaptics_image_sensor_1f(priv, &mt_state);
1132 else if (sgm->w == 0)
1133 synaptics_image_sensor_2f(priv, &mt_state);
1134 else if (sgm->w == 1 && mt_state.count <= 3)
1135 synaptics_image_sensor_3f(priv, &mt_state);
1137 synaptics_image_sensor_45f(priv, &mt_state);
1139 /* Send resulting input events to user space */
1140 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1142 /* Store updated mt_state */
1143 priv->mt_state = agm->mt_state = mt_state;
1144 priv->agm_pending = false;
1147 static void synaptics_profile_sensor_process(struct psmouse *psmouse,
1148 struct synaptics_hw_state *sgm,
1151 struct input_dev *dev = psmouse->dev;
1152 struct synaptics_data *priv = psmouse->private;
1153 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
1154 struct input_mt_pos pos[2];
1155 int slot[2], nsemi, i;
1157 nsemi = clamp_val(num_fingers, 0, 2);
1159 for (i = 0; i < nsemi; i++) {
1160 pos[i].x = hw[i]->x;
1161 pos[i].y = synaptics_invert_y(hw[i]->y);
1164 input_mt_assign_slots(dev, slot, pos, nsemi);
1166 for (i = 0; i < nsemi; i++) {
1167 input_mt_slot(dev, slot[i]);
1168 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1169 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1170 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1171 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1174 input_mt_drop_unused(dev);
1175 input_mt_report_pointer_emulation(dev, false);
1176 input_mt_report_finger_count(dev, num_fingers);
1178 synaptics_report_buttons(psmouse, sgm);
1184 * called for each full received packet from the touchpad
1186 static void synaptics_process_packet(struct psmouse *psmouse)
1188 struct input_dev *dev = psmouse->dev;
1189 struct synaptics_data *priv = psmouse->private;
1190 struct synaptics_hw_state hw;
1194 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1197 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1198 synaptics_image_sensor_process(psmouse, &hw);
1203 priv->scroll += hw.scroll;
1205 while (priv->scroll >= 4) {
1206 input_report_key(dev, BTN_BACK, !hw.down);
1208 input_report_key(dev, BTN_BACK, hw.down);
1212 while (priv->scroll <= -4) {
1213 input_report_key(dev, BTN_FORWARD, !hw.up);
1215 input_report_key(dev, BTN_FORWARD, hw.up);
1222 if (hw.z > 0 && hw.x > 1) {
1225 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1228 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1229 num_fingers = hw.w + 2;
1232 if (SYN_MODEL_PEN(priv->model_id))
1233 ; /* Nothing, treat a pen as a single finger */
1236 if (SYN_CAP_PALMDETECT(priv->capabilities))
1237 finger_width = hw.w;
1246 if (cr48_profile_sensor) {
1247 synaptics_profile_sensor_process(psmouse, &hw, num_fingers);
1251 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1252 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1256 * BTN_TOUCH has to be first as mousedev relies on it when doing
1257 * absolute -> relative conversion
1259 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1260 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1262 if (num_fingers > 0) {
1263 input_report_abs(dev, ABS_X, hw.x);
1264 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1266 input_report_abs(dev, ABS_PRESSURE, hw.z);
1268 if (SYN_CAP_PALMDETECT(priv->capabilities))
1269 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1271 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1272 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1273 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1274 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1277 synaptics_report_buttons(psmouse, &hw);
1282 static int synaptics_validate_byte(struct psmouse *psmouse,
1283 int idx, unsigned char pkt_type)
1285 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1286 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1287 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1288 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1289 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1290 const char *packet = psmouse->packet;
1292 if (idx < 0 || idx > 4)
1298 case SYN_NEWABS_RELAXED:
1299 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1301 case SYN_NEWABS_STRICT:
1302 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1305 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1308 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1313 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1317 for (i = 0; i < 5; i++)
1318 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1319 psmouse_info(psmouse, "using relaxed packet validation\n");
1320 return SYN_NEWABS_RELAXED;
1323 return SYN_NEWABS_STRICT;
1326 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1328 struct synaptics_data *priv = psmouse->private;
1330 if (psmouse->pktcnt >= 6) { /* Full packet received */
1331 if (unlikely(priv->pkt_type == SYN_NEWABS))
1332 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1334 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1335 synaptics_is_pt_packet(psmouse->packet)) {
1337 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1339 synaptics_process_packet(psmouse);
1341 return PSMOUSE_FULL_PACKET;
1344 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1345 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1348 /*****************************************************************************
1349 * Driver initialization/cleanup functions
1350 ****************************************************************************/
1351 static void set_abs_position_params(struct input_dev *dev,
1352 struct synaptics_data *priv, int x_code,
1355 int x_min = priv->x_min ?: XMIN_NOMINAL;
1356 int x_max = priv->x_max ?: XMAX_NOMINAL;
1357 int y_min = priv->y_min ?: YMIN_NOMINAL;
1358 int y_max = priv->y_max ?: YMAX_NOMINAL;
1359 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1360 SYN_REDUCED_FILTER_FUZZ : 0;
1362 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1363 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1364 input_abs_set_res(dev, x_code, priv->x_res);
1365 input_abs_set_res(dev, y_code, priv->y_res);
1368 static void set_input_params(struct psmouse *psmouse,
1369 struct synaptics_data *priv)
1371 struct input_dev *dev = psmouse->dev;
1374 /* Things that apply to both modes */
1375 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1376 __set_bit(EV_KEY, dev->evbit);
1377 __set_bit(BTN_LEFT, dev->keybit);
1378 __set_bit(BTN_RIGHT, dev->keybit);
1380 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1381 __set_bit(BTN_MIDDLE, dev->keybit);
1383 if (!priv->absolute_mode) {
1385 __set_bit(EV_REL, dev->evbit);
1386 __set_bit(REL_X, dev->relbit);
1387 __set_bit(REL_Y, dev->relbit);
1392 __set_bit(EV_ABS, dev->evbit);
1393 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1394 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1396 if (cr48_profile_sensor)
1397 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1399 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1400 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1402 /* Image sensors can report per-contact pressure */
1403 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1404 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1406 /* Image sensors can signal 4 and 5 finger clicks */
1407 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1408 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1409 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1410 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1413 * Profile sensor in CR-48 tracks contacts reasonably well,
1414 * other non-image sensors with AGM use semi-mt.
1416 input_mt_init_slots(dev, 2,
1418 (cr48_profile_sensor ?
1419 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1422 if (SYN_CAP_PALMDETECT(priv->capabilities))
1423 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1425 __set_bit(BTN_TOUCH, dev->keybit);
1426 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1428 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1429 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1430 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1433 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1434 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1435 __set_bit(BTN_FORWARD, dev->keybit);
1436 __set_bit(BTN_BACK, dev->keybit);
1439 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1440 __set_bit(BTN_0 + i, dev->keybit);
1442 __clear_bit(EV_REL, dev->evbit);
1443 __clear_bit(REL_X, dev->relbit);
1444 __clear_bit(REL_Y, dev->relbit);
1446 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1447 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1448 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1449 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1450 /* Clickpads report only left button */
1451 __clear_bit(BTN_RIGHT, dev->keybit);
1452 __clear_bit(BTN_MIDDLE, dev->keybit);
1456 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1457 void *data, char *buf)
1459 struct synaptics_data *priv = psmouse->private;
1461 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1464 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1465 void *data, const char *buf,
1468 struct synaptics_data *priv = psmouse->private;
1472 err = kstrtouint(buf, 10, &value);
1479 if (value == priv->disable_gesture)
1482 priv->disable_gesture = value;
1484 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1486 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1488 if (synaptics_mode_cmd(psmouse, priv->mode))
1494 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1495 synaptics_show_disable_gesture,
1496 synaptics_set_disable_gesture);
1498 static void synaptics_disconnect(struct psmouse *psmouse)
1500 struct synaptics_data *priv = psmouse->private;
1502 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1503 device_remove_file(&psmouse->ps2dev.serio->dev,
1504 &psmouse_attr_disable_gesture.dattr);
1506 synaptics_reset(psmouse);
1508 psmouse->private = NULL;
1511 static int synaptics_reconnect(struct psmouse *psmouse)
1513 struct synaptics_data *priv = psmouse->private;
1514 struct synaptics_data old_priv = *priv;
1515 unsigned char param[2];
1520 psmouse_reset(psmouse);
1523 * On some boxes, right after resuming, the touchpad
1524 * needs some time to finish initializing (I assume
1525 * it needs time to calibrate) and start responding
1526 * to Synaptics-specific queries, so let's wait a
1531 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1532 error = synaptics_detect(psmouse, 0);
1533 } while (error && ++retry < 3);
1539 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1541 if (synaptics_query_hardware(psmouse)) {
1542 psmouse_err(psmouse, "Unable to query device.\n");
1546 if (synaptics_set_mode(psmouse)) {
1547 psmouse_err(psmouse, "Unable to initialize device.\n");
1551 if (old_priv.identity != priv->identity ||
1552 old_priv.model_id != priv->model_id ||
1553 old_priv.capabilities != priv->capabilities ||
1554 old_priv.ext_cap != priv->ext_cap) {
1555 psmouse_err(psmouse,
1556 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1557 old_priv.identity, priv->identity,
1558 old_priv.model_id, priv->model_id,
1559 old_priv.capabilities, priv->capabilities,
1560 old_priv.ext_cap, priv->ext_cap);
1567 static bool impaired_toshiba_kbc;
1569 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1570 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1572 /* Toshiba Satellite */
1574 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1575 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1579 /* Toshiba Dynabook */
1581 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1582 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1586 /* Toshiba Portege M300 */
1588 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1589 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1594 /* Toshiba Portege M300 */
1596 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1597 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1598 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1606 static bool broken_olpc_ec;
1608 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1609 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1611 /* OLPC XO-1 or XO-1.5 */
1613 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1614 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1621 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1622 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1624 /* Cr-48 Chromebook (Codename Mario) */
1626 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1627 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1634 void __init synaptics_module_init(void)
1636 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1637 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1638 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1641 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1643 struct synaptics_data *priv;
1647 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1648 * packet spew overloads the EC such that key presses on the keyboard
1649 * are missed. Given that, don't even attempt to use Absolute mode.
1650 * Relative mode seems to work just fine.
1652 if (absolute_mode && broken_olpc_ec) {
1653 psmouse_info(psmouse,
1654 "OLPC XO detected, not enabling Synaptics protocol.\n");
1658 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1662 psmouse_reset(psmouse);
1664 if (synaptics_query_hardware(psmouse)) {
1665 psmouse_err(psmouse, "Unable to query device.\n");
1669 priv->absolute_mode = absolute_mode;
1670 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1671 priv->disable_gesture = true;
1673 if (synaptics_set_mode(psmouse)) {
1674 psmouse_err(psmouse, "Unable to initialize device.\n");
1678 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1680 psmouse_info(psmouse,
1681 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1682 SYN_ID_MODEL(priv->identity),
1683 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1685 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1686 priv->board_id, priv->firmware_id);
1688 set_input_params(psmouse, priv);
1691 * Encode touchpad model so that it can be used to set
1692 * input device->id.version and be visible to userspace.
1693 * Because version is __u16 we have to drop something.
1694 * Hardware info bits seem to be good candidates as they
1695 * are documented to be for Synaptics corp. internal use.
1697 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1698 (priv->model_id & 0x000000ff);
1700 if (absolute_mode) {
1701 psmouse->protocol_handler = synaptics_process_byte;
1702 psmouse->pktsize = 6;
1704 /* Relative mode follows standard PS/2 mouse protocol */
1705 psmouse->protocol_handler = psmouse_process_byte;
1706 psmouse->pktsize = 3;
1709 psmouse->set_rate = synaptics_set_rate;
1710 psmouse->disconnect = synaptics_disconnect;
1711 psmouse->reconnect = synaptics_reconnect;
1712 psmouse->cleanup = synaptics_reset;
1713 /* Synaptics can usually stay in sync without extra help */
1714 psmouse->resync_time = 0;
1716 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1717 synaptics_pt_create(psmouse);
1720 * Toshiba's KBC seems to have trouble handling data from
1721 * Synaptics at full rate. Switch to a lower rate (roughly
1722 * the same rate as a standard PS/2 mouse).
1724 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1725 psmouse_info(psmouse,
1726 "Toshiba %s detected, limiting rate to 40pps.\n",
1727 dmi_get_system_info(DMI_PRODUCT_NAME));
1731 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1732 err = device_create_file(&psmouse->ps2dev.serio->dev,
1733 &psmouse_attr_disable_gesture.dattr);
1735 psmouse_err(psmouse,
1736 "Failed to create disable_gesture attribute (%d)",
1749 int synaptics_init(struct psmouse *psmouse)
1751 return __synaptics_init(psmouse, true);
1754 int synaptics_init_relative(struct psmouse *psmouse)
1756 return __synaptics_init(psmouse, false);
1759 bool synaptics_supported(void)
1764 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1766 void __init synaptics_module_init(void)
1770 int synaptics_init(struct psmouse *psmouse)
1775 bool synaptics_supported(void)
1780 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */