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 * Any position values from the hardware above the following limits are
57 * treated as "wrapped around negative" values that have been truncated to
58 * the 13-bit reporting range of the hardware. These are just reasonable
59 * guesses and can be adjusted if hardware is found that operates outside
60 * of these parameters.
62 #define X_MAX_POSITIVE (((1 << ABS_POS_BITS) + XMAX) / 2)
63 #define Y_MAX_POSITIVE (((1 << ABS_POS_BITS) + YMAX) / 2)
65 /*****************************************************************************
66 * Stuff we need even when we do not want native Synaptics support
67 ****************************************************************************/
70 * Set the synaptics touchpad mode byte by special commands
72 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
74 unsigned char param[1];
76 if (psmouse_sliced_command(psmouse, mode))
78 param[0] = SYN_PS_SET_MODE2;
79 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
84 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
86 struct ps2dev *ps2dev = &psmouse->ps2dev;
87 unsigned char param[4];
91 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
92 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
93 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
94 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
95 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
100 if (set_properties) {
101 psmouse->vendor = "Synaptics";
102 psmouse->name = "TouchPad";
108 void synaptics_reset(struct psmouse *psmouse)
110 /* reset touchpad back to relative mode, gestures enabled */
111 synaptics_mode_cmd(psmouse, 0);
114 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
116 /*****************************************************************************
117 * Synaptics communications functions
118 ****************************************************************************/
121 * Synaptics touchpads report the y coordinate from bottom to top, which is
122 * opposite from what userspace expects.
123 * This function is used to invert y before reporting.
125 static int synaptics_invert_y(int y)
127 return YMAX_NOMINAL + YMIN_NOMINAL - y;
131 * Send a command to the synpatics touchpad by special commands
133 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
135 if (psmouse_sliced_command(psmouse, c))
137 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
143 * Read the model-id bytes from the touchpad
144 * see also SYN_MODEL_* macros
146 static int synaptics_model_id(struct psmouse *psmouse)
148 struct synaptics_data *priv = psmouse->private;
151 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
153 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
158 * Read the board id from the touchpad
159 * The board id is encoded in the "QUERY MODES" response
161 static int synaptics_board_id(struct psmouse *psmouse)
163 struct synaptics_data *priv = psmouse->private;
164 unsigned char bid[3];
166 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
168 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
173 * Read the firmware id from the touchpad
175 static int synaptics_firmware_id(struct psmouse *psmouse)
177 struct synaptics_data *priv = psmouse->private;
178 unsigned char fwid[3];
180 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
182 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
187 * Read the capability-bits from the touchpad
188 * see also the SYN_CAP_* macros
190 static int synaptics_capability(struct psmouse *psmouse)
192 struct synaptics_data *priv = psmouse->private;
193 unsigned char cap[3];
195 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
197 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
198 priv->ext_cap = priv->ext_cap_0c = 0;
201 * Older firmwares had submodel ID fixed to 0x47
203 if (SYN_ID_FULL(priv->identity) < 0x705 &&
204 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
209 * Unless capExtended is set the rest of the flags should be ignored
211 if (!SYN_CAP_EXTENDED(priv->capabilities))
212 priv->capabilities = 0;
214 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
215 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
216 psmouse_warn(psmouse,
217 "device claims to have extended capabilities, but I'm not able to read them.\n");
219 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
222 * if nExtBtn is greater than 8 it should be considered
223 * invalid and treated as 0
225 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
226 priv->ext_cap &= 0xff0fff;
230 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
231 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
232 psmouse_warn(psmouse,
233 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
235 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
244 * See also the SYN_ID_* macros
246 static int synaptics_identify(struct psmouse *psmouse)
248 struct synaptics_data *priv = psmouse->private;
251 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
253 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
254 if (SYN_ID_IS_SYNAPTICS(priv->identity))
260 * Read touchpad resolution and maximum reported coordinates
261 * Resolution is left zero if touchpad does not support the query
263 static int synaptics_resolution(struct psmouse *psmouse)
265 struct synaptics_data *priv = psmouse->private;
266 unsigned char resp[3];
268 if (SYN_ID_MAJOR(priv->identity) < 4)
271 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
272 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
273 priv->x_res = resp[0]; /* x resolution in units/mm */
274 priv->y_res = resp[2]; /* y resolution in units/mm */
278 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
279 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
280 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
281 psmouse_warn(psmouse,
282 "device claims to have max coordinates query, but I'm not able to read it.\n");
284 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
285 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
289 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
290 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
291 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
292 psmouse_warn(psmouse,
293 "device claims to have min coordinates query, but I'm not able to read it.\n");
295 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
296 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
303 static int synaptics_query_hardware(struct psmouse *psmouse)
305 if (synaptics_identify(psmouse))
307 if (synaptics_model_id(psmouse))
309 if (synaptics_firmware_id(psmouse))
311 if (synaptics_board_id(psmouse))
313 if (synaptics_capability(psmouse))
315 if (synaptics_resolution(psmouse))
321 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
323 static unsigned char param = 0xc8;
324 struct synaptics_data *priv = psmouse->private;
326 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
327 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
330 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
333 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
336 /* Advanced gesture mode also sends multi finger data */
337 priv->capabilities |= BIT(1);
342 static int synaptics_set_mode(struct psmouse *psmouse)
344 struct synaptics_data *priv = psmouse->private;
347 if (priv->absolute_mode)
348 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
349 if (priv->disable_gesture)
350 priv->mode |= SYN_BIT_DISABLE_GESTURE;
351 if (psmouse->rate >= 80)
352 priv->mode |= SYN_BIT_HIGH_RATE;
353 if (SYN_CAP_EXTENDED(priv->capabilities))
354 priv->mode |= SYN_BIT_W_MODE;
356 if (synaptics_mode_cmd(psmouse, priv->mode))
359 if (priv->absolute_mode &&
360 synaptics_set_advanced_gesture_mode(psmouse)) {
361 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
368 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
370 struct synaptics_data *priv = psmouse->private;
373 priv->mode |= SYN_BIT_HIGH_RATE;
376 priv->mode &= ~SYN_BIT_HIGH_RATE;
380 synaptics_mode_cmd(psmouse, priv->mode);
383 /*****************************************************************************
384 * Synaptics pass-through PS/2 port support
385 ****************************************************************************/
386 static int synaptics_pt_write(struct serio *serio, unsigned char c)
388 struct psmouse *parent = serio_get_drvdata(serio->parent);
389 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
391 if (psmouse_sliced_command(parent, c))
393 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
398 static int synaptics_pt_start(struct serio *serio)
400 struct psmouse *parent = serio_get_drvdata(serio->parent);
401 struct synaptics_data *priv = parent->private;
403 serio_pause_rx(parent->ps2dev.serio);
404 priv->pt_port = serio;
405 serio_continue_rx(parent->ps2dev.serio);
410 static void synaptics_pt_stop(struct serio *serio)
412 struct psmouse *parent = serio_get_drvdata(serio->parent);
413 struct synaptics_data *priv = parent->private;
415 serio_pause_rx(parent->ps2dev.serio);
416 priv->pt_port = NULL;
417 serio_continue_rx(parent->ps2dev.serio);
420 static int synaptics_is_pt_packet(unsigned char *buf)
422 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
425 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
427 struct psmouse *child = serio_get_drvdata(ptport);
429 if (child && child->state == PSMOUSE_ACTIVATED) {
430 serio_interrupt(ptport, packet[1], 0);
431 serio_interrupt(ptport, packet[4], 0);
432 serio_interrupt(ptport, packet[5], 0);
433 if (child->pktsize == 4)
434 serio_interrupt(ptport, packet[2], 0);
436 serio_interrupt(ptport, packet[1], 0);
439 static void synaptics_pt_activate(struct psmouse *psmouse)
441 struct synaptics_data *priv = psmouse->private;
442 struct psmouse *child = serio_get_drvdata(priv->pt_port);
444 /* adjust the touchpad to child's choice of protocol */
446 if (child->pktsize == 4)
447 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
449 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
451 if (synaptics_mode_cmd(psmouse, priv->mode))
452 psmouse_warn(psmouse,
453 "failed to switch guest protocol\n");
457 static void synaptics_pt_create(struct psmouse *psmouse)
461 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
464 "not enough memory for pass-through port\n");
468 serio->id.type = SERIO_PS_PSTHRU;
469 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
470 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
471 serio->write = synaptics_pt_write;
472 serio->start = synaptics_pt_start;
473 serio->stop = synaptics_pt_stop;
474 serio->parent = psmouse->ps2dev.serio;
476 psmouse->pt_activate = synaptics_pt_activate;
478 psmouse_info(psmouse, "serio: %s port at %s\n",
479 serio->name, psmouse->phys);
480 serio_register_port(serio);
483 /*****************************************************************************
484 * Functions to interpret the absolute mode packets
485 ****************************************************************************/
487 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
490 state->count = count;
495 static void synaptics_parse_agm(const unsigned char buf[],
496 struct synaptics_data *priv,
497 struct synaptics_hw_state *hw)
499 struct synaptics_hw_state *agm = &priv->agm;
502 agm_packet_type = (buf[5] & 0x30) >> 4;
503 switch (agm_packet_type) {
505 /* Gesture packet: (x, y, z) half resolution */
507 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
508 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
509 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
513 /* AGM-CONTACT packet: (count, sgm, agm) */
514 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
521 /* Record that at least one AGM has been received since last SGM */
522 priv->agm_pending = true;
525 static int synaptics_parse_hw_state(const unsigned char buf[],
526 struct synaptics_data *priv,
527 struct synaptics_hw_state *hw)
529 memset(hw, 0, sizeof(struct synaptics_hw_state));
531 if (SYN_MODEL_NEWABS(priv->model_id)) {
532 hw->w = (((buf[0] & 0x30) >> 2) |
533 ((buf[0] & 0x04) >> 1) |
534 ((buf[3] & 0x04) >> 2));
536 hw->left = (buf[0] & 0x01) ? 1 : 0;
537 hw->right = (buf[0] & 0x02) ? 1 : 0;
539 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
541 * Clickpad's button is transmitted as middle button,
542 * however, since it is primary button, we will report
545 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
547 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
548 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
550 hw->scroll = (signed char)(buf[1]);
553 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
554 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
555 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
558 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
559 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
561 synaptics_parse_agm(buf, priv, hw);
565 hw->x = (((buf[3] & 0x10) << 8) |
566 ((buf[1] & 0x0f) << 8) |
568 hw->y = (((buf[3] & 0x20) << 7) |
569 ((buf[1] & 0xf0) << 4) |
573 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
574 ((buf[0] ^ buf[3]) & 0x02)) {
575 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
578 * if nExtBtn is greater than 8 it should be
579 * considered invalid and treated as 0
583 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
584 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
586 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
587 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
589 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
590 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
592 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
593 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
597 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
598 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
600 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
601 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
603 hw->left = (buf[0] & 0x01) ? 1 : 0;
604 hw->right = (buf[0] & 0x02) ? 1 : 0;
607 /* Convert wrap-around values to negative */
608 if (hw->x > X_MAX_POSITIVE)
609 hw->x -= 1 << ABS_POS_BITS;
610 if (hw->y > Y_MAX_POSITIVE)
611 hw->y -= 1 << ABS_POS_BITS;
616 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
617 bool active, int x, int y)
619 input_mt_slot(dev, slot);
620 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
622 input_report_abs(dev, ABS_MT_POSITION_X, x);
623 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
627 static void synaptics_report_semi_mt_data(struct input_dev *dev,
628 const struct synaptics_hw_state *a,
629 const struct synaptics_hw_state *b,
632 if (num_fingers >= 2) {
633 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
635 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
637 } else if (num_fingers == 1) {
638 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
639 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
641 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
642 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
646 static void synaptics_report_buttons(struct psmouse *psmouse,
647 const struct synaptics_hw_state *hw)
649 struct input_dev *dev = psmouse->dev;
650 struct synaptics_data *priv = psmouse->private;
653 input_report_key(dev, BTN_LEFT, hw->left);
654 input_report_key(dev, BTN_RIGHT, hw->right);
656 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
657 input_report_key(dev, BTN_MIDDLE, hw->middle);
659 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
660 input_report_key(dev, BTN_FORWARD, hw->up);
661 input_report_key(dev, BTN_BACK, hw->down);
664 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
665 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
668 static void synaptics_report_slot(struct input_dev *dev, int slot,
669 const struct synaptics_hw_state *hw)
671 input_mt_slot(dev, slot);
672 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
676 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
677 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
678 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
681 static void synaptics_report_mt_data(struct psmouse *psmouse,
682 struct synaptics_mt_state *mt_state,
683 const struct synaptics_hw_state *sgm)
685 struct input_dev *dev = psmouse->dev;
686 struct synaptics_data *priv = psmouse->private;
687 struct synaptics_hw_state *agm = &priv->agm;
688 struct synaptics_mt_state *old = &priv->mt_state;
690 switch (mt_state->count) {
692 synaptics_report_slot(dev, 0, NULL);
693 synaptics_report_slot(dev, 1, NULL);
696 if (mt_state->sgm == -1) {
697 synaptics_report_slot(dev, 0, NULL);
698 synaptics_report_slot(dev, 1, NULL);
699 } else if (mt_state->sgm == 0) {
700 synaptics_report_slot(dev, 0, sgm);
701 synaptics_report_slot(dev, 1, NULL);
703 synaptics_report_slot(dev, 0, NULL);
704 synaptics_report_slot(dev, 1, sgm);
709 * If the finger slot contained in SGM is valid, and either
710 * hasn't changed, or is new, then report SGM in MTB slot 0.
711 * Otherwise, empty MTB slot 0.
713 if (mt_state->sgm != -1 &&
714 (mt_state->sgm == old->sgm || old->sgm == -1))
715 synaptics_report_slot(dev, 0, sgm);
717 synaptics_report_slot(dev, 0, NULL);
720 * If the finger slot contained in AGM is valid, and either
721 * hasn't changed, or is new, then report AGM in MTB slot 1.
722 * Otherwise, empty MTB slot 1.
724 if (mt_state->agm != -1 &&
725 (mt_state->agm == old->agm || old->agm == -1))
726 synaptics_report_slot(dev, 1, agm);
728 synaptics_report_slot(dev, 1, NULL);
732 /* Don't use active slot count to generate BTN_TOOL events. */
733 input_mt_report_pointer_emulation(dev, false);
735 /* Send the number of fingers reported by touchpad itself. */
736 input_mt_report_finger_count(dev, mt_state->count);
738 synaptics_report_buttons(psmouse, sgm);
743 /* Handle case where mt_state->count = 0 */
744 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
745 struct synaptics_mt_state *mt_state)
747 synaptics_mt_state_set(mt_state, 0, -1, -1);
748 priv->mt_state_lost = false;
751 /* Handle case where mt_state->count = 1 */
752 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
753 struct synaptics_mt_state *mt_state)
755 struct synaptics_hw_state *agm = &priv->agm;
756 struct synaptics_mt_state *old = &priv->mt_state;
759 * If the last AGM was (0,0,0), and there is only one finger left,
760 * then we absolutely know that SGM contains slot 0, and all other
761 * fingers have been removed.
763 if (priv->agm_pending && agm->z == 0) {
764 synaptics_mt_state_set(mt_state, 1, 0, -1);
765 priv->mt_state_lost = false;
769 switch (old->count) {
771 synaptics_mt_state_set(mt_state, 1, 0, -1);
775 * If mt_state_lost, then the previous transition was 3->1,
776 * and SGM now contains either slot 0 or 1, but we don't know
777 * which. So, we just assume that the SGM now contains slot 1.
779 * If pending AGM and either:
780 * (a) the previous SGM slot contains slot 0, or
781 * (b) there was no SGM slot
782 * then, the SGM now contains slot 1
784 * Case (a) happens with very rapid "drum roll" gestures, where
785 * slot 0 finger is lifted and a new slot 1 finger touches
786 * within one reporting interval.
788 * Case (b) happens if initially two or more fingers tap
789 * briefly, and all but one lift before the end of the first
790 * reporting interval.
792 * (In both these cases, slot 0 will becomes empty, so SGM
793 * contains slot 1 with the new finger)
795 * Else, if there was no previous SGM, it now contains slot 0.
797 * Otherwise, SGM still contains the same slot.
799 if (priv->mt_state_lost ||
800 (priv->agm_pending && old->sgm <= 0))
801 synaptics_mt_state_set(mt_state, 1, 1, -1);
802 else if (old->sgm == -1)
803 synaptics_mt_state_set(mt_state, 1, 0, -1);
807 * If mt_state_lost, we don't know which finger SGM contains.
809 * So, report 1 finger, but with both slots empty.
810 * We will use slot 1 on subsequent 1->1
812 if (priv->mt_state_lost) {
813 synaptics_mt_state_set(mt_state, 1, -1, -1);
817 * Since the last AGM was NOT (0,0,0), it was the finger in
818 * slot 0 that has been removed.
819 * So, SGM now contains previous AGM's slot, and AGM is now
822 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
826 * Since last AGM was not (0,0,0), we don't know which finger
829 * So, report 1 finger, but with both slots empty.
830 * We will use slot 1 on subsequent 1->1
832 synaptics_mt_state_set(mt_state, 1, -1, -1);
833 priv->mt_state_lost = true;
837 /* mt_state was updated by AGM-CONTACT packet */
842 /* Handle case where mt_state->count = 2 */
843 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
844 struct synaptics_mt_state *mt_state)
846 struct synaptics_mt_state *old = &priv->mt_state;
848 switch (old->count) {
850 synaptics_mt_state_set(mt_state, 2, 0, 1);
854 * If previous SGM contained slot 1 or higher, SGM now contains
855 * slot 0 (the newly touching finger) and AGM contains SGM's
858 * Otherwise, SGM still contains slot 0 and AGM now contains
862 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
864 synaptics_mt_state_set(mt_state, 2, 0, 1);
868 * If mt_state_lost, SGM now contains either finger 1 or 2, but
869 * we don't know which.
870 * So, we just assume that the SGM contains slot 0 and AGM 1.
872 if (priv->mt_state_lost)
873 synaptics_mt_state_set(mt_state, 2, 0, 1);
875 * Otherwise, use the same mt_state, since it either hasn't
876 * changed, or was updated by a recently received AGM-CONTACT
882 * 3->2 transitions have two unsolvable problems:
883 * 1) no indication is given which finger was removed
884 * 2) no way to tell if agm packet was for finger 3
885 * before 3->2, or finger 2 after 3->2.
887 * So, report 2 fingers, but empty all slots.
888 * We will guess slots [0,1] on subsequent 2->2.
890 synaptics_mt_state_set(mt_state, 2, -1, -1);
891 priv->mt_state_lost = true;
895 /* mt_state was updated by AGM-CONTACT packet */
900 /* Handle case where mt_state->count = 3 */
901 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
902 struct synaptics_mt_state *mt_state)
904 struct synaptics_mt_state *old = &priv->mt_state;
906 switch (old->count) {
908 synaptics_mt_state_set(mt_state, 3, 0, 2);
912 * If previous SGM contained slot 2 or higher, SGM now contains
913 * slot 0 (one of the newly touching fingers) and AGM contains
914 * SGM's previous slot.
916 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
919 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
921 synaptics_mt_state_set(mt_state, 3, 0, 2);
925 * If the AGM previously contained slot 3 or higher, then the
926 * newly touching finger is in the lowest available slot.
928 * If SGM was previously 1 or higher, then the new SGM is
929 * now slot 0 (with a new finger), otherwise, the new finger
930 * is now in a hidden slot between 0 and AGM's slot.
932 * In all such cases, the SGM now contains slot 0, and the AGM
933 * continues to contain the same slot as before.
936 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
941 * After some 3->1 and all 3->2 transitions, we lose track
942 * of which slot is reported by SGM and AGM.
944 * For 2->3 in this state, report 3 fingers, but empty all
945 * slots, and we will guess (0,2) on a subsequent 0->3.
947 * To userspace, the resulting transition will look like:
948 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
950 if (priv->mt_state_lost) {
951 synaptics_mt_state_set(mt_state, 3, -1, -1);
956 * If the (SGM,AGM) really previously contained slots (0, 1),
957 * then we cannot know what slot was just reported by the AGM,
958 * because the 2->3 transition can occur either before or after
959 * the AGM packet. Thus, this most recent AGM could contain
960 * either the same old slot 1 or the new slot 2.
961 * Subsequent AGMs will be reporting slot 2.
963 * To userspace, the resulting transition will look like:
964 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
966 synaptics_mt_state_set(mt_state, 3, 0, -1);
970 * If, for whatever reason, the previous agm was invalid,
971 * Assume SGM now contains slot 0, AGM now contains slot 2.
974 synaptics_mt_state_set(mt_state, 3, 0, 2);
976 * mt_state either hasn't changed, or was updated by a recently
977 * received AGM-CONTACT packet.
983 /* mt_state was updated by AGM-CONTACT packet */
988 /* Handle case where mt_state->count = 4, or = 5 */
989 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
990 struct synaptics_mt_state *mt_state)
992 /* mt_state was updated correctly by AGM-CONTACT packet */
993 priv->mt_state_lost = false;
996 static void synaptics_image_sensor_process(struct psmouse *psmouse,
997 struct synaptics_hw_state *sgm)
999 struct synaptics_data *priv = psmouse->private;
1000 struct synaptics_hw_state *agm = &priv->agm;
1001 struct synaptics_mt_state mt_state;
1003 /* Initialize using current mt_state (as updated by last agm) */
1004 mt_state = agm->mt_state;
1007 * Update mt_state using the new finger count and current mt_state.
1010 synaptics_image_sensor_0f(priv, &mt_state);
1011 else if (sgm->w >= 4)
1012 synaptics_image_sensor_1f(priv, &mt_state);
1013 else if (sgm->w == 0)
1014 synaptics_image_sensor_2f(priv, &mt_state);
1015 else if (sgm->w == 1 && mt_state.count <= 3)
1016 synaptics_image_sensor_3f(priv, &mt_state);
1018 synaptics_image_sensor_45f(priv, &mt_state);
1020 /* Send resulting input events to user space */
1021 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1023 /* Store updated mt_state */
1024 priv->mt_state = agm->mt_state = mt_state;
1025 priv->agm_pending = false;
1029 * called for each full received packet from the touchpad
1031 static void synaptics_process_packet(struct psmouse *psmouse)
1033 struct input_dev *dev = psmouse->dev;
1034 struct synaptics_data *priv = psmouse->private;
1035 struct synaptics_hw_state hw;
1039 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1042 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1043 synaptics_image_sensor_process(psmouse, &hw);
1048 priv->scroll += hw.scroll;
1050 while (priv->scroll >= 4) {
1051 input_report_key(dev, BTN_BACK, !hw.down);
1053 input_report_key(dev, BTN_BACK, hw.down);
1057 while (priv->scroll <= -4) {
1058 input_report_key(dev, BTN_FORWARD, !hw.up);
1060 input_report_key(dev, BTN_FORWARD, hw.up);
1067 if (hw.z > 0 && hw.x > 1) {
1070 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1073 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1074 num_fingers = hw.w + 2;
1077 if (SYN_MODEL_PEN(priv->model_id))
1078 ; /* Nothing, treat a pen as a single finger */
1081 if (SYN_CAP_PALMDETECT(priv->capabilities))
1082 finger_width = hw.w;
1091 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1092 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1096 * BTN_TOUCH has to be first as mousedev relies on it when doing
1097 * absolute -> relative conversion
1099 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1100 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1102 if (num_fingers > 0) {
1103 input_report_abs(dev, ABS_X, hw.x);
1104 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1106 input_report_abs(dev, ABS_PRESSURE, hw.z);
1108 if (SYN_CAP_PALMDETECT(priv->capabilities))
1109 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1111 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1112 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1113 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1114 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1117 synaptics_report_buttons(psmouse, &hw);
1122 static int synaptics_validate_byte(struct psmouse *psmouse,
1123 int idx, unsigned char pkt_type)
1125 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1126 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1127 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1128 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1129 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1130 const char *packet = psmouse->packet;
1132 if (idx < 0 || idx > 4)
1138 case SYN_NEWABS_RELAXED:
1139 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1141 case SYN_NEWABS_STRICT:
1142 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1145 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1148 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1153 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1157 for (i = 0; i < 5; i++)
1158 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1159 psmouse_info(psmouse, "using relaxed packet validation\n");
1160 return SYN_NEWABS_RELAXED;
1163 return SYN_NEWABS_STRICT;
1166 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1168 struct synaptics_data *priv = psmouse->private;
1170 if (psmouse->pktcnt >= 6) { /* Full packet received */
1171 if (unlikely(priv->pkt_type == SYN_NEWABS))
1172 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1174 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1175 synaptics_is_pt_packet(psmouse->packet)) {
1177 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1179 synaptics_process_packet(psmouse);
1181 return PSMOUSE_FULL_PACKET;
1184 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1185 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1188 /*****************************************************************************
1189 * Driver initialization/cleanup functions
1190 ****************************************************************************/
1191 static void set_abs_position_params(struct input_dev *dev,
1192 struct synaptics_data *priv, int x_code,
1195 int x_min = priv->x_min ?: XMIN_NOMINAL;
1196 int x_max = priv->x_max ?: XMAX_NOMINAL;
1197 int y_min = priv->y_min ?: YMIN_NOMINAL;
1198 int y_max = priv->y_max ?: YMAX_NOMINAL;
1199 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1200 SYN_REDUCED_FILTER_FUZZ : 0;
1202 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1203 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1204 input_abs_set_res(dev, x_code, priv->x_res);
1205 input_abs_set_res(dev, y_code, priv->y_res);
1208 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
1212 /* Things that apply to both modes */
1213 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1214 __set_bit(EV_KEY, dev->evbit);
1215 __set_bit(BTN_LEFT, dev->keybit);
1216 __set_bit(BTN_RIGHT, dev->keybit);
1218 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1219 __set_bit(BTN_MIDDLE, dev->keybit);
1221 if (!priv->absolute_mode) {
1223 __set_bit(EV_REL, dev->evbit);
1224 __set_bit(REL_X, dev->relbit);
1225 __set_bit(REL_Y, dev->relbit);
1230 __set_bit(EV_ABS, dev->evbit);
1231 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1232 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1234 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1235 input_mt_init_slots(dev, 2, 0);
1236 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1238 /* Image sensors can report per-contact pressure */
1239 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1241 /* Image sensors can signal 4 and 5 finger clicks */
1242 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1243 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1244 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1245 /* Non-image sensors with AGM use semi-mt */
1246 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1247 input_mt_init_slots(dev, 2, 0);
1248 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1252 if (SYN_CAP_PALMDETECT(priv->capabilities))
1253 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1255 __set_bit(BTN_TOUCH, dev->keybit);
1256 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1258 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1259 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1260 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1263 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1264 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1265 __set_bit(BTN_FORWARD, dev->keybit);
1266 __set_bit(BTN_BACK, dev->keybit);
1269 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1270 __set_bit(BTN_0 + i, dev->keybit);
1272 __clear_bit(EV_REL, dev->evbit);
1273 __clear_bit(REL_X, dev->relbit);
1274 __clear_bit(REL_Y, dev->relbit);
1276 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1277 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1278 /* Clickpads report only left button */
1279 __clear_bit(BTN_RIGHT, dev->keybit);
1280 __clear_bit(BTN_MIDDLE, dev->keybit);
1284 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1285 void *data, char *buf)
1287 struct synaptics_data *priv = psmouse->private;
1289 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1292 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1293 void *data, const char *buf,
1296 struct synaptics_data *priv = psmouse->private;
1300 err = kstrtouint(buf, 10, &value);
1307 if (value == priv->disable_gesture)
1310 priv->disable_gesture = value;
1312 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1314 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1316 if (synaptics_mode_cmd(psmouse, priv->mode))
1322 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1323 synaptics_show_disable_gesture,
1324 synaptics_set_disable_gesture);
1326 static void synaptics_disconnect(struct psmouse *psmouse)
1328 struct synaptics_data *priv = psmouse->private;
1330 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1331 device_remove_file(&psmouse->ps2dev.serio->dev,
1332 &psmouse_attr_disable_gesture.dattr);
1334 synaptics_reset(psmouse);
1336 psmouse->private = NULL;
1339 static int synaptics_reconnect(struct psmouse *psmouse)
1341 struct synaptics_data *priv = psmouse->private;
1342 struct synaptics_data old_priv = *priv;
1347 psmouse_reset(psmouse);
1350 * On some boxes, right after resuming, the touchpad
1351 * needs some time to finish initializing (I assume
1352 * it needs time to calibrate) and start responding
1353 * to Synaptics-specific queries, so let's wait a
1358 error = synaptics_detect(psmouse, 0);
1359 } while (error && ++retry < 3);
1365 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1367 if (synaptics_query_hardware(psmouse)) {
1368 psmouse_err(psmouse, "Unable to query device.\n");
1372 if (synaptics_set_mode(psmouse)) {
1373 psmouse_err(psmouse, "Unable to initialize device.\n");
1377 if (old_priv.identity != priv->identity ||
1378 old_priv.model_id != priv->model_id ||
1379 old_priv.capabilities != priv->capabilities ||
1380 old_priv.ext_cap != priv->ext_cap) {
1381 psmouse_err(psmouse,
1382 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1383 old_priv.identity, priv->identity,
1384 old_priv.model_id, priv->model_id,
1385 old_priv.capabilities, priv->capabilities,
1386 old_priv.ext_cap, priv->ext_cap);
1393 static bool impaired_toshiba_kbc;
1395 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
1396 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1398 /* Toshiba Satellite */
1400 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1401 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1405 /* Toshiba Dynabook */
1407 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1408 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1412 /* Toshiba Portege M300 */
1414 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1415 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1420 /* Toshiba Portege M300 */
1422 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1423 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1424 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1432 static bool broken_olpc_ec;
1434 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
1435 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1437 /* OLPC XO-1 or XO-1.5 */
1439 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1440 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1447 void __init synaptics_module_init(void)
1449 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1450 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1453 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1455 struct synaptics_data *priv;
1459 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1460 * packet spew overloads the EC such that key presses on the keyboard
1461 * are missed. Given that, don't even attempt to use Absolute mode.
1462 * Relative mode seems to work just fine.
1464 if (absolute_mode && broken_olpc_ec) {
1465 psmouse_info(psmouse,
1466 "OLPC XO detected, not enabling Synaptics protocol.\n");
1470 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1474 psmouse_reset(psmouse);
1476 if (synaptics_query_hardware(psmouse)) {
1477 psmouse_err(psmouse, "Unable to query device.\n");
1481 priv->absolute_mode = absolute_mode;
1482 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1483 priv->disable_gesture = true;
1485 if (synaptics_set_mode(psmouse)) {
1486 psmouse_err(psmouse, "Unable to initialize device.\n");
1490 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1492 psmouse_info(psmouse,
1493 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1494 SYN_ID_MODEL(priv->identity),
1495 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1497 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1498 priv->board_id, priv->firmware_id);
1500 set_input_params(psmouse->dev, priv);
1503 * Encode touchpad model so that it can be used to set
1504 * input device->id.version and be visible to userspace.
1505 * Because version is __u16 we have to drop something.
1506 * Hardware info bits seem to be good candidates as they
1507 * are documented to be for Synaptics corp. internal use.
1509 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1510 (priv->model_id & 0x000000ff);
1512 if (absolute_mode) {
1513 psmouse->protocol_handler = synaptics_process_byte;
1514 psmouse->pktsize = 6;
1516 /* Relative mode follows standard PS/2 mouse protocol */
1517 psmouse->protocol_handler = psmouse_process_byte;
1518 psmouse->pktsize = 3;
1521 psmouse->set_rate = synaptics_set_rate;
1522 psmouse->disconnect = synaptics_disconnect;
1523 psmouse->reconnect = synaptics_reconnect;
1524 psmouse->cleanup = synaptics_reset;
1525 /* Synaptics can usually stay in sync without extra help */
1526 psmouse->resync_time = 0;
1528 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1529 synaptics_pt_create(psmouse);
1532 * Toshiba's KBC seems to have trouble handling data from
1533 * Synaptics at full rate. Switch to a lower rate (roughly
1534 * the same rate as a standard PS/2 mouse).
1536 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1537 psmouse_info(psmouse,
1538 "Toshiba %s detected, limiting rate to 40pps.\n",
1539 dmi_get_system_info(DMI_PRODUCT_NAME));
1543 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1544 err = device_create_file(&psmouse->ps2dev.serio->dev,
1545 &psmouse_attr_disable_gesture.dattr);
1547 psmouse_err(psmouse,
1548 "Failed to create disable_gesture attribute (%d)",
1561 int synaptics_init(struct psmouse *psmouse)
1563 return __synaptics_init(psmouse, true);
1566 int synaptics_init_relative(struct psmouse *psmouse)
1568 return __synaptics_init(psmouse, false);
1571 bool synaptics_supported(void)
1576 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1578 void __init synaptics_module_init(void)
1582 int synaptics_init(struct psmouse *psmouse)
1587 bool synaptics_supported(void)
1592 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */