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 /*****************************************************************************
122 * Synaptics communications functions
123 ****************************************************************************/
126 * Synaptics touchpads report the y coordinate from bottom to top, which is
127 * opposite from what userspace expects.
128 * This function is used to invert y before reporting.
130 static int synaptics_invert_y(int y)
132 return YMAX_NOMINAL + YMIN_NOMINAL - y;
136 * Send a command to the synpatics touchpad by special commands
138 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
140 if (psmouse_sliced_command(psmouse, c))
142 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
148 * Read the model-id bytes from the touchpad
149 * see also SYN_MODEL_* macros
151 static int synaptics_model_id(struct psmouse *psmouse)
153 struct synaptics_data *priv = psmouse->private;
156 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
158 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
163 * Read the board id from the touchpad
164 * The board id is encoded in the "QUERY MODES" response
166 static int synaptics_board_id(struct psmouse *psmouse)
168 struct synaptics_data *priv = psmouse->private;
169 unsigned char bid[3];
171 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
173 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
178 * Read the firmware id from the touchpad
180 static int synaptics_firmware_id(struct psmouse *psmouse)
182 struct synaptics_data *priv = psmouse->private;
183 unsigned char fwid[3];
185 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
187 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
192 * Read the capability-bits from the touchpad
193 * see also the SYN_CAP_* macros
195 static int synaptics_capability(struct psmouse *psmouse)
197 struct synaptics_data *priv = psmouse->private;
198 unsigned char cap[3];
200 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
202 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
203 priv->ext_cap = priv->ext_cap_0c = 0;
206 * Older firmwares had submodel ID fixed to 0x47
208 if (SYN_ID_FULL(priv->identity) < 0x705 &&
209 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
214 * Unless capExtended is set the rest of the flags should be ignored
216 if (!SYN_CAP_EXTENDED(priv->capabilities))
217 priv->capabilities = 0;
219 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
220 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
221 psmouse_warn(psmouse,
222 "device claims to have extended capabilities, but I'm not able to read them.\n");
224 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
227 * if nExtBtn is greater than 8 it should be considered
228 * invalid and treated as 0
230 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
231 priv->ext_cap &= 0xff0fff;
235 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
236 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
237 psmouse_warn(psmouse,
238 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
240 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
249 * See also the SYN_ID_* macros
251 static int synaptics_identify(struct psmouse *psmouse)
253 struct synaptics_data *priv = psmouse->private;
256 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
258 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
259 if (SYN_ID_IS_SYNAPTICS(priv->identity))
265 * Read touchpad resolution and maximum reported coordinates
266 * Resolution is left zero if touchpad does not support the query
268 static int synaptics_resolution(struct psmouse *psmouse)
270 struct synaptics_data *priv = psmouse->private;
271 unsigned char resp[3];
273 if (SYN_ID_MAJOR(priv->identity) < 4)
276 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
277 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
278 priv->x_res = resp[0]; /* x resolution in units/mm */
279 priv->y_res = resp[2]; /* y resolution in units/mm */
283 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
284 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
285 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
286 psmouse_warn(psmouse,
287 "device claims to have max coordinates query, but I'm not able to read it.\n");
289 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
290 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
294 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
295 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
296 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
297 psmouse_warn(psmouse,
298 "device claims to have min coordinates query, but I'm not able to read it.\n");
300 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
301 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
308 static int synaptics_query_hardware(struct psmouse *psmouse)
310 if (synaptics_identify(psmouse))
312 if (synaptics_model_id(psmouse))
314 if (synaptics_firmware_id(psmouse))
316 if (synaptics_board_id(psmouse))
318 if (synaptics_capability(psmouse))
320 if (synaptics_resolution(psmouse))
326 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
328 static unsigned char param = 0xc8;
329 struct synaptics_data *priv = psmouse->private;
331 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
332 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
335 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
338 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
341 /* Advanced gesture mode also sends multi finger data */
342 priv->capabilities |= BIT(1);
347 static int synaptics_set_mode(struct psmouse *psmouse)
349 struct synaptics_data *priv = psmouse->private;
352 if (priv->absolute_mode)
353 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
354 if (priv->disable_gesture)
355 priv->mode |= SYN_BIT_DISABLE_GESTURE;
356 if (psmouse->rate >= 80)
357 priv->mode |= SYN_BIT_HIGH_RATE;
358 if (SYN_CAP_EXTENDED(priv->capabilities))
359 priv->mode |= SYN_BIT_W_MODE;
361 if (synaptics_mode_cmd(psmouse, priv->mode))
364 if (priv->absolute_mode &&
365 synaptics_set_advanced_gesture_mode(psmouse)) {
366 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
373 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
375 struct synaptics_data *priv = psmouse->private;
378 priv->mode |= SYN_BIT_HIGH_RATE;
381 priv->mode &= ~SYN_BIT_HIGH_RATE;
385 synaptics_mode_cmd(psmouse, priv->mode);
388 /*****************************************************************************
389 * Synaptics pass-through PS/2 port support
390 ****************************************************************************/
391 static int synaptics_pt_write(struct serio *serio, unsigned char c)
393 struct psmouse *parent = serio_get_drvdata(serio->parent);
394 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
396 if (psmouse_sliced_command(parent, c))
398 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
403 static int synaptics_pt_start(struct serio *serio)
405 struct psmouse *parent = serio_get_drvdata(serio->parent);
406 struct synaptics_data *priv = parent->private;
408 serio_pause_rx(parent->ps2dev.serio);
409 priv->pt_port = serio;
410 serio_continue_rx(parent->ps2dev.serio);
415 static void synaptics_pt_stop(struct serio *serio)
417 struct psmouse *parent = serio_get_drvdata(serio->parent);
418 struct synaptics_data *priv = parent->private;
420 serio_pause_rx(parent->ps2dev.serio);
421 priv->pt_port = NULL;
422 serio_continue_rx(parent->ps2dev.serio);
425 static int synaptics_is_pt_packet(unsigned char *buf)
427 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
430 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
432 struct psmouse *child = serio_get_drvdata(ptport);
434 if (child && child->state == PSMOUSE_ACTIVATED) {
435 serio_interrupt(ptport, packet[1], 0);
436 serio_interrupt(ptport, packet[4], 0);
437 serio_interrupt(ptport, packet[5], 0);
438 if (child->pktsize == 4)
439 serio_interrupt(ptport, packet[2], 0);
441 serio_interrupt(ptport, packet[1], 0);
444 static void synaptics_pt_activate(struct psmouse *psmouse)
446 struct synaptics_data *priv = psmouse->private;
447 struct psmouse *child = serio_get_drvdata(priv->pt_port);
449 /* adjust the touchpad to child's choice of protocol */
451 if (child->pktsize == 4)
452 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
454 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
456 if (synaptics_mode_cmd(psmouse, priv->mode))
457 psmouse_warn(psmouse,
458 "failed to switch guest protocol\n");
462 static void synaptics_pt_create(struct psmouse *psmouse)
466 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
469 "not enough memory for pass-through port\n");
473 serio->id.type = SERIO_PS_PSTHRU;
474 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
475 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
476 serio->write = synaptics_pt_write;
477 serio->start = synaptics_pt_start;
478 serio->stop = synaptics_pt_stop;
479 serio->parent = psmouse->ps2dev.serio;
481 psmouse->pt_activate = synaptics_pt_activate;
483 psmouse_info(psmouse, "serio: %s port at %s\n",
484 serio->name, psmouse->phys);
485 serio_register_port(serio);
488 /*****************************************************************************
489 * Functions to interpret the absolute mode packets
490 ****************************************************************************/
492 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
495 state->count = count;
500 static void synaptics_parse_agm(const unsigned char buf[],
501 struct synaptics_data *priv,
502 struct synaptics_hw_state *hw)
504 struct synaptics_hw_state *agm = &priv->agm;
507 agm_packet_type = (buf[5] & 0x30) >> 4;
508 switch (agm_packet_type) {
510 /* Gesture packet: (x, y, z) half resolution */
512 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
513 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
514 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
518 /* AGM-CONTACT packet: (count, sgm, agm) */
519 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
526 /* Record that at least one AGM has been received since last SGM */
527 priv->agm_pending = true;
530 static int synaptics_parse_hw_state(const unsigned char buf[],
531 struct synaptics_data *priv,
532 struct synaptics_hw_state *hw)
534 memset(hw, 0, sizeof(struct synaptics_hw_state));
536 if (SYN_MODEL_NEWABS(priv->model_id)) {
537 hw->w = (((buf[0] & 0x30) >> 2) |
538 ((buf[0] & 0x04) >> 1) |
539 ((buf[3] & 0x04) >> 2));
541 hw->left = (buf[0] & 0x01) ? 1 : 0;
542 hw->right = (buf[0] & 0x02) ? 1 : 0;
544 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
546 * Clickpad's button is transmitted as middle button,
547 * however, since it is primary button, we will report
550 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
552 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
553 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
555 hw->scroll = (signed char)(buf[1]);
558 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
559 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
560 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
563 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
564 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
566 synaptics_parse_agm(buf, priv, hw);
570 hw->x = (((buf[3] & 0x10) << 8) |
571 ((buf[1] & 0x0f) << 8) |
573 hw->y = (((buf[3] & 0x20) << 7) |
574 ((buf[1] & 0xf0) << 4) |
578 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
579 ((buf[0] ^ buf[3]) & 0x02)) {
580 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
583 * if nExtBtn is greater than 8 it should be
584 * considered invalid and treated as 0
588 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
589 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
591 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
592 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
594 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
595 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
597 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
598 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
602 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
603 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
605 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
606 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
608 hw->left = (buf[0] & 0x01) ? 1 : 0;
609 hw->right = (buf[0] & 0x02) ? 1 : 0;
613 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
614 * is used by some firmware to indicate a finger at the edge of
615 * the touchpad whose precise position cannot be determined, so
616 * convert these values to the maximum axis value.
618 if (hw->x > X_MAX_POSITIVE)
619 hw->x -= 1 << ABS_POS_BITS;
620 else if (hw->x == X_MAX_POSITIVE)
623 if (hw->y > Y_MAX_POSITIVE)
624 hw->y -= 1 << ABS_POS_BITS;
625 else if (hw->y == Y_MAX_POSITIVE)
631 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
632 bool active, int x, int y)
634 input_mt_slot(dev, slot);
635 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
637 input_report_abs(dev, ABS_MT_POSITION_X, x);
638 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
642 static void synaptics_report_semi_mt_data(struct input_dev *dev,
643 const struct synaptics_hw_state *a,
644 const struct synaptics_hw_state *b,
647 if (num_fingers >= 2) {
648 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
650 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
652 } else if (num_fingers == 1) {
653 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
654 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
656 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
657 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
661 static void synaptics_report_buttons(struct psmouse *psmouse,
662 const struct synaptics_hw_state *hw)
664 struct input_dev *dev = psmouse->dev;
665 struct synaptics_data *priv = psmouse->private;
668 input_report_key(dev, BTN_LEFT, hw->left);
669 input_report_key(dev, BTN_RIGHT, hw->right);
671 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
672 input_report_key(dev, BTN_MIDDLE, hw->middle);
674 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
675 input_report_key(dev, BTN_FORWARD, hw->up);
676 input_report_key(dev, BTN_BACK, hw->down);
679 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
680 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
683 static void synaptics_report_slot(struct input_dev *dev, int slot,
684 const struct synaptics_hw_state *hw)
686 input_mt_slot(dev, slot);
687 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
691 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
692 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
693 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
696 static void synaptics_report_mt_data(struct psmouse *psmouse,
697 struct synaptics_mt_state *mt_state,
698 const struct synaptics_hw_state *sgm)
700 struct input_dev *dev = psmouse->dev;
701 struct synaptics_data *priv = psmouse->private;
702 struct synaptics_hw_state *agm = &priv->agm;
703 struct synaptics_mt_state *old = &priv->mt_state;
705 switch (mt_state->count) {
707 synaptics_report_slot(dev, 0, NULL);
708 synaptics_report_slot(dev, 1, NULL);
711 if (mt_state->sgm == -1) {
712 synaptics_report_slot(dev, 0, NULL);
713 synaptics_report_slot(dev, 1, NULL);
714 } else if (mt_state->sgm == 0) {
715 synaptics_report_slot(dev, 0, sgm);
716 synaptics_report_slot(dev, 1, NULL);
718 synaptics_report_slot(dev, 0, NULL);
719 synaptics_report_slot(dev, 1, sgm);
724 * If the finger slot contained in SGM is valid, and either
725 * hasn't changed, or is new, or the old SGM has now moved to
726 * AGM, then report SGM in MTB slot 0.
727 * Otherwise, empty MTB slot 0.
729 if (mt_state->sgm != -1 &&
730 (mt_state->sgm == old->sgm ||
731 old->sgm == -1 || mt_state->agm == old->sgm))
732 synaptics_report_slot(dev, 0, sgm);
734 synaptics_report_slot(dev, 0, NULL);
737 * If the finger slot contained in AGM is valid, and either
738 * hasn't changed, or is new, then report AGM in MTB slot 1.
739 * Otherwise, empty MTB slot 1.
741 * However, in the case where the AGM is new, make sure that
742 * that it is either the same as the old SGM, or there was no
745 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
746 * the new AGM will keep the old SGM's tracking ID, which can
747 * cause apparent drumroll. This happens if in the following
748 * valid finger sequence:
750 * Action SGM AGM (MTB slot:Contact)
751 * 1. Touch contact 0 (0:0)
752 * 2. Touch contact 1 (0:0, 1:1)
753 * 3. Lift contact 0 (1:1)
754 * 4. Touch contacts 2,3 (0:2, 1:3)
756 * In step 4, contact 3, in AGM must not be given the same
757 * tracking ID as contact 1 had in step 3. To avoid this,
758 * the first agm with contact 3 is dropped and slot 1 is
759 * invalidated (tracking ID = -1).
761 if (mt_state->agm != -1 &&
762 (mt_state->agm == old->agm ||
764 (old->sgm == -1 || mt_state->agm == old->sgm))))
765 synaptics_report_slot(dev, 1, agm);
767 synaptics_report_slot(dev, 1, NULL);
771 /* Don't use active slot count to generate BTN_TOOL events. */
772 input_mt_report_pointer_emulation(dev, false);
774 /* Send the number of fingers reported by touchpad itself. */
775 input_mt_report_finger_count(dev, mt_state->count);
777 synaptics_report_buttons(psmouse, sgm);
782 /* Handle case where mt_state->count = 0 */
783 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
784 struct synaptics_mt_state *mt_state)
786 synaptics_mt_state_set(mt_state, 0, -1, -1);
787 priv->mt_state_lost = false;
790 /* Handle case where mt_state->count = 1 */
791 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
792 struct synaptics_mt_state *mt_state)
794 struct synaptics_hw_state *agm = &priv->agm;
795 struct synaptics_mt_state *old = &priv->mt_state;
798 * If the last AGM was (0,0,0), and there is only one finger left,
799 * then we absolutely know that SGM contains slot 0, and all other
800 * fingers have been removed.
802 if (priv->agm_pending && agm->z == 0) {
803 synaptics_mt_state_set(mt_state, 1, 0, -1);
804 priv->mt_state_lost = false;
808 switch (old->count) {
810 synaptics_mt_state_set(mt_state, 1, 0, -1);
814 * If mt_state_lost, then the previous transition was 3->1,
815 * and SGM now contains either slot 0 or 1, but we don't know
816 * which. So, we just assume that the SGM now contains slot 1.
818 * If pending AGM and either:
819 * (a) the previous SGM slot contains slot 0, or
820 * (b) there was no SGM slot
821 * then, the SGM now contains slot 1
823 * Case (a) happens with very rapid "drum roll" gestures, where
824 * slot 0 finger is lifted and a new slot 1 finger touches
825 * within one reporting interval.
827 * Case (b) happens if initially two or more fingers tap
828 * briefly, and all but one lift before the end of the first
829 * reporting interval.
831 * (In both these cases, slot 0 will becomes empty, so SGM
832 * contains slot 1 with the new finger)
834 * Else, if there was no previous SGM, it now contains slot 0.
836 * Otherwise, SGM still contains the same slot.
838 if (priv->mt_state_lost ||
839 (priv->agm_pending && old->sgm <= 0))
840 synaptics_mt_state_set(mt_state, 1, 1, -1);
841 else if (old->sgm == -1)
842 synaptics_mt_state_set(mt_state, 1, 0, -1);
846 * If mt_state_lost, we don't know which finger SGM contains.
848 * So, report 1 finger, but with both slots empty.
849 * We will use slot 1 on subsequent 1->1
851 if (priv->mt_state_lost) {
852 synaptics_mt_state_set(mt_state, 1, -1, -1);
856 * Since the last AGM was NOT (0,0,0), it was the finger in
857 * slot 0 that has been removed.
858 * So, SGM now contains previous AGM's slot, and AGM is now
861 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
865 * Since last AGM was not (0,0,0), we don't know which finger
868 * So, report 1 finger, but with both slots empty.
869 * We will use slot 1 on subsequent 1->1
871 synaptics_mt_state_set(mt_state, 1, -1, -1);
872 priv->mt_state_lost = true;
876 /* mt_state was updated by AGM-CONTACT packet */
881 /* Handle case where mt_state->count = 2 */
882 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
883 struct synaptics_mt_state *mt_state)
885 struct synaptics_mt_state *old = &priv->mt_state;
887 switch (old->count) {
889 synaptics_mt_state_set(mt_state, 2, 0, 1);
893 * If previous SGM contained slot 1 or higher, SGM now contains
894 * slot 0 (the newly touching finger) and AGM contains SGM's
897 * Otherwise, SGM still contains slot 0 and AGM now contains
901 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
903 synaptics_mt_state_set(mt_state, 2, 0, 1);
907 * If mt_state_lost, SGM now contains either finger 1 or 2, but
908 * we don't know which.
909 * So, we just assume that the SGM contains slot 0 and AGM 1.
911 if (priv->mt_state_lost)
912 synaptics_mt_state_set(mt_state, 2, 0, 1);
914 * Otherwise, use the same mt_state, since it either hasn't
915 * changed, or was updated by a recently received AGM-CONTACT
921 * 3->2 transitions have two unsolvable problems:
922 * 1) no indication is given which finger was removed
923 * 2) no way to tell if agm packet was for finger 3
924 * before 3->2, or finger 2 after 3->2.
926 * So, report 2 fingers, but empty all slots.
927 * We will guess slots [0,1] on subsequent 2->2.
929 synaptics_mt_state_set(mt_state, 2, -1, -1);
930 priv->mt_state_lost = true;
934 /* mt_state was updated by AGM-CONTACT packet */
939 /* Handle case where mt_state->count = 3 */
940 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
941 struct synaptics_mt_state *mt_state)
943 struct synaptics_mt_state *old = &priv->mt_state;
945 switch (old->count) {
947 synaptics_mt_state_set(mt_state, 3, 0, 2);
951 * If previous SGM contained slot 2 or higher, SGM now contains
952 * slot 0 (one of the newly touching fingers) and AGM contains
953 * SGM's previous slot.
955 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
958 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
960 synaptics_mt_state_set(mt_state, 3, 0, 2);
964 * If the AGM previously contained slot 3 or higher, then the
965 * newly touching finger is in the lowest available slot.
967 * If SGM was previously 1 or higher, then the new SGM is
968 * now slot 0 (with a new finger), otherwise, the new finger
969 * is now in a hidden slot between 0 and AGM's slot.
971 * In all such cases, the SGM now contains slot 0, and the AGM
972 * continues to contain the same slot as before.
975 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
980 * After some 3->1 and all 3->2 transitions, we lose track
981 * of which slot is reported by SGM and AGM.
983 * For 2->3 in this state, report 3 fingers, but empty all
984 * slots, and we will guess (0,2) on a subsequent 0->3.
986 * To userspace, the resulting transition will look like:
987 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
989 if (priv->mt_state_lost) {
990 synaptics_mt_state_set(mt_state, 3, -1, -1);
995 * If the (SGM,AGM) really previously contained slots (0, 1),
996 * then we cannot know what slot was just reported by the AGM,
997 * because the 2->3 transition can occur either before or after
998 * the AGM packet. Thus, this most recent AGM could contain
999 * either the same old slot 1 or the new slot 2.
1000 * Subsequent AGMs will be reporting slot 2.
1002 * To userspace, the resulting transition will look like:
1003 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1005 synaptics_mt_state_set(mt_state, 3, 0, -1);
1009 * If, for whatever reason, the previous agm was invalid,
1010 * Assume SGM now contains slot 0, AGM now contains slot 2.
1013 synaptics_mt_state_set(mt_state, 3, 0, 2);
1015 * mt_state either hasn't changed, or was updated by a recently
1016 * received AGM-CONTACT packet.
1022 /* mt_state was updated by AGM-CONTACT packet */
1027 /* Handle case where mt_state->count = 4, or = 5 */
1028 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1029 struct synaptics_mt_state *mt_state)
1031 /* mt_state was updated correctly by AGM-CONTACT packet */
1032 priv->mt_state_lost = false;
1035 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1036 struct synaptics_hw_state *sgm)
1038 struct synaptics_data *priv = psmouse->private;
1039 struct synaptics_hw_state *agm = &priv->agm;
1040 struct synaptics_mt_state mt_state;
1042 /* Initialize using current mt_state (as updated by last agm) */
1043 mt_state = agm->mt_state;
1046 * Update mt_state using the new finger count and current mt_state.
1049 synaptics_image_sensor_0f(priv, &mt_state);
1050 else if (sgm->w >= 4)
1051 synaptics_image_sensor_1f(priv, &mt_state);
1052 else if (sgm->w == 0)
1053 synaptics_image_sensor_2f(priv, &mt_state);
1054 else if (sgm->w == 1 && mt_state.count <= 3)
1055 synaptics_image_sensor_3f(priv, &mt_state);
1057 synaptics_image_sensor_45f(priv, &mt_state);
1059 /* Send resulting input events to user space */
1060 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1062 /* Store updated mt_state */
1063 priv->mt_state = agm->mt_state = mt_state;
1064 priv->agm_pending = false;
1068 * called for each full received packet from the touchpad
1070 static void synaptics_process_packet(struct psmouse *psmouse)
1072 struct input_dev *dev = psmouse->dev;
1073 struct synaptics_data *priv = psmouse->private;
1074 struct synaptics_hw_state hw;
1078 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1081 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1082 synaptics_image_sensor_process(psmouse, &hw);
1087 priv->scroll += hw.scroll;
1089 while (priv->scroll >= 4) {
1090 input_report_key(dev, BTN_BACK, !hw.down);
1092 input_report_key(dev, BTN_BACK, hw.down);
1096 while (priv->scroll <= -4) {
1097 input_report_key(dev, BTN_FORWARD, !hw.up);
1099 input_report_key(dev, BTN_FORWARD, hw.up);
1106 if (hw.z > 0 && hw.x > 1) {
1109 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1112 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1113 num_fingers = hw.w + 2;
1116 if (SYN_MODEL_PEN(priv->model_id))
1117 ; /* Nothing, treat a pen as a single finger */
1120 if (SYN_CAP_PALMDETECT(priv->capabilities))
1121 finger_width = hw.w;
1130 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1131 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1135 * BTN_TOUCH has to be first as mousedev relies on it when doing
1136 * absolute -> relative conversion
1138 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1139 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1141 if (num_fingers > 0) {
1142 input_report_abs(dev, ABS_X, hw.x);
1143 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1145 input_report_abs(dev, ABS_PRESSURE, hw.z);
1147 if (SYN_CAP_PALMDETECT(priv->capabilities))
1148 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1150 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1151 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1152 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1153 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1156 synaptics_report_buttons(psmouse, &hw);
1161 static int synaptics_validate_byte(struct psmouse *psmouse,
1162 int idx, unsigned char pkt_type)
1164 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1165 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1166 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1167 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1168 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1169 const char *packet = psmouse->packet;
1171 if (idx < 0 || idx > 4)
1177 case SYN_NEWABS_RELAXED:
1178 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1180 case SYN_NEWABS_STRICT:
1181 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1184 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1187 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1192 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1196 for (i = 0; i < 5; i++)
1197 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1198 psmouse_info(psmouse, "using relaxed packet validation\n");
1199 return SYN_NEWABS_RELAXED;
1202 return SYN_NEWABS_STRICT;
1205 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1207 struct synaptics_data *priv = psmouse->private;
1209 if (psmouse->pktcnt >= 6) { /* Full packet received */
1210 if (unlikely(priv->pkt_type == SYN_NEWABS))
1211 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1213 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1214 synaptics_is_pt_packet(psmouse->packet)) {
1216 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1218 synaptics_process_packet(psmouse);
1220 return PSMOUSE_FULL_PACKET;
1223 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1224 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1227 /*****************************************************************************
1228 * Driver initialization/cleanup functions
1229 ****************************************************************************/
1230 static void set_abs_position_params(struct input_dev *dev,
1231 struct synaptics_data *priv, int x_code,
1234 int x_min = priv->x_min ?: XMIN_NOMINAL;
1235 int x_max = priv->x_max ?: XMAX_NOMINAL;
1236 int y_min = priv->y_min ?: YMIN_NOMINAL;
1237 int y_max = priv->y_max ?: YMAX_NOMINAL;
1238 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1239 SYN_REDUCED_FILTER_FUZZ : 0;
1241 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1242 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1243 input_abs_set_res(dev, x_code, priv->x_res);
1244 input_abs_set_res(dev, y_code, priv->y_res);
1247 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
1251 /* Things that apply to both modes */
1252 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1253 __set_bit(EV_KEY, dev->evbit);
1254 __set_bit(BTN_LEFT, dev->keybit);
1255 __set_bit(BTN_RIGHT, dev->keybit);
1257 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1258 __set_bit(BTN_MIDDLE, dev->keybit);
1260 if (!priv->absolute_mode) {
1262 __set_bit(EV_REL, dev->evbit);
1263 __set_bit(REL_X, dev->relbit);
1264 __set_bit(REL_Y, dev->relbit);
1269 __set_bit(EV_ABS, dev->evbit);
1270 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1271 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1273 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1274 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1276 /* Image sensors can report per-contact pressure */
1277 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1278 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1280 /* Image sensors can signal 4 and 5 finger clicks */
1281 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1282 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1283 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1284 /* Non-image sensors with AGM use semi-mt */
1285 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1286 input_mt_init_slots(dev, 2, 0);
1287 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1291 if (SYN_CAP_PALMDETECT(priv->capabilities))
1292 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1294 __set_bit(BTN_TOUCH, dev->keybit);
1295 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1297 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1298 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1299 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1302 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1303 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1304 __set_bit(BTN_FORWARD, dev->keybit);
1305 __set_bit(BTN_BACK, dev->keybit);
1308 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1309 __set_bit(BTN_0 + i, dev->keybit);
1311 __clear_bit(EV_REL, dev->evbit);
1312 __clear_bit(REL_X, dev->relbit);
1313 __clear_bit(REL_Y, dev->relbit);
1315 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1316 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1317 /* Clickpads report only left button */
1318 __clear_bit(BTN_RIGHT, dev->keybit);
1319 __clear_bit(BTN_MIDDLE, dev->keybit);
1323 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1324 void *data, char *buf)
1326 struct synaptics_data *priv = psmouse->private;
1328 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1331 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1332 void *data, const char *buf,
1335 struct synaptics_data *priv = psmouse->private;
1339 err = kstrtouint(buf, 10, &value);
1346 if (value == priv->disable_gesture)
1349 priv->disable_gesture = value;
1351 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1353 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1355 if (synaptics_mode_cmd(psmouse, priv->mode))
1361 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1362 synaptics_show_disable_gesture,
1363 synaptics_set_disable_gesture);
1365 static void synaptics_disconnect(struct psmouse *psmouse)
1367 struct synaptics_data *priv = psmouse->private;
1369 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1370 device_remove_file(&psmouse->ps2dev.serio->dev,
1371 &psmouse_attr_disable_gesture.dattr);
1373 synaptics_reset(psmouse);
1375 psmouse->private = NULL;
1378 static int synaptics_reconnect(struct psmouse *psmouse)
1380 struct synaptics_data *priv = psmouse->private;
1381 struct synaptics_data old_priv = *priv;
1386 psmouse_reset(psmouse);
1389 * On some boxes, right after resuming, the touchpad
1390 * needs some time to finish initializing (I assume
1391 * it needs time to calibrate) and start responding
1392 * to Synaptics-specific queries, so let's wait a
1397 error = synaptics_detect(psmouse, 0);
1398 } while (error && ++retry < 3);
1404 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1406 if (synaptics_query_hardware(psmouse)) {
1407 psmouse_err(psmouse, "Unable to query device.\n");
1411 if (synaptics_set_mode(psmouse)) {
1412 psmouse_err(psmouse, "Unable to initialize device.\n");
1416 if (old_priv.identity != priv->identity ||
1417 old_priv.model_id != priv->model_id ||
1418 old_priv.capabilities != priv->capabilities ||
1419 old_priv.ext_cap != priv->ext_cap) {
1420 psmouse_err(psmouse,
1421 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1422 old_priv.identity, priv->identity,
1423 old_priv.model_id, priv->model_id,
1424 old_priv.capabilities, priv->capabilities,
1425 old_priv.ext_cap, priv->ext_cap);
1432 static bool impaired_toshiba_kbc;
1434 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
1435 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1437 /* Toshiba Satellite */
1439 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1440 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1444 /* Toshiba Dynabook */
1446 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1447 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1451 /* Toshiba Portege M300 */
1453 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1454 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1459 /* Toshiba Portege M300 */
1461 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1462 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1463 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1471 static bool broken_olpc_ec;
1473 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
1474 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1476 /* OLPC XO-1 or XO-1.5 */
1478 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1479 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1486 void __init synaptics_module_init(void)
1488 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1489 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1492 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1494 struct synaptics_data *priv;
1498 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1499 * packet spew overloads the EC such that key presses on the keyboard
1500 * are missed. Given that, don't even attempt to use Absolute mode.
1501 * Relative mode seems to work just fine.
1503 if (absolute_mode && broken_olpc_ec) {
1504 psmouse_info(psmouse,
1505 "OLPC XO detected, not enabling Synaptics protocol.\n");
1509 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1513 psmouse_reset(psmouse);
1515 if (synaptics_query_hardware(psmouse)) {
1516 psmouse_err(psmouse, "Unable to query device.\n");
1520 priv->absolute_mode = absolute_mode;
1521 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1522 priv->disable_gesture = true;
1524 if (synaptics_set_mode(psmouse)) {
1525 psmouse_err(psmouse, "Unable to initialize device.\n");
1529 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1531 psmouse_info(psmouse,
1532 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1533 SYN_ID_MODEL(priv->identity),
1534 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1536 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1537 priv->board_id, priv->firmware_id);
1539 set_input_params(psmouse->dev, priv);
1542 * Encode touchpad model so that it can be used to set
1543 * input device->id.version and be visible to userspace.
1544 * Because version is __u16 we have to drop something.
1545 * Hardware info bits seem to be good candidates as they
1546 * are documented to be for Synaptics corp. internal use.
1548 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1549 (priv->model_id & 0x000000ff);
1551 if (absolute_mode) {
1552 psmouse->protocol_handler = synaptics_process_byte;
1553 psmouse->pktsize = 6;
1555 /* Relative mode follows standard PS/2 mouse protocol */
1556 psmouse->protocol_handler = psmouse_process_byte;
1557 psmouse->pktsize = 3;
1560 psmouse->set_rate = synaptics_set_rate;
1561 psmouse->disconnect = synaptics_disconnect;
1562 psmouse->reconnect = synaptics_reconnect;
1563 psmouse->cleanup = synaptics_reset;
1564 /* Synaptics can usually stay in sync without extra help */
1565 psmouse->resync_time = 0;
1567 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1568 synaptics_pt_create(psmouse);
1571 * Toshiba's KBC seems to have trouble handling data from
1572 * Synaptics at full rate. Switch to a lower rate (roughly
1573 * the same rate as a standard PS/2 mouse).
1575 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1576 psmouse_info(psmouse,
1577 "Toshiba %s detected, limiting rate to 40pps.\n",
1578 dmi_get_system_info(DMI_PRODUCT_NAME));
1582 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1583 err = device_create_file(&psmouse->ps2dev.serio->dev,
1584 &psmouse_attr_disable_gesture.dattr);
1586 psmouse_err(psmouse,
1587 "Failed to create disable_gesture attribute (%d)",
1600 int synaptics_init(struct psmouse *psmouse)
1602 return __synaptics_init(psmouse, true);
1605 int synaptics_init_relative(struct psmouse *psmouse)
1607 return __synaptics_init(psmouse, false);
1610 bool synaptics_supported(void)
1615 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1617 void __init synaptics_module_init(void)
1621 int synaptics_init(struct psmouse *psmouse)
1626 bool synaptics_supported(void)
1631 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */