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
43 #define XMIN_NOMINAL 1472
44 #define XMAX_NOMINAL 5472
45 #define YMIN_NOMINAL 1408
46 #define YMAX_NOMINAL 4448
49 * Synaptics touchpads report the y coordinate from bottom to top, which is
50 * opposite from what userspace expects.
51 * This function is used to invert y before reporting.
53 static int synaptics_invert_y(int y)
55 return YMAX_NOMINAL + YMIN_NOMINAL - y;
59 /*****************************************************************************
60 * Stuff we need even when we do not want native Synaptics support
61 ****************************************************************************/
64 * Set the synaptics touchpad mode byte by special commands
66 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
68 unsigned char param[1];
70 if (psmouse_sliced_command(psmouse, mode))
72 param[0] = SYN_PS_SET_MODE2;
73 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
78 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
80 struct ps2dev *ps2dev = &psmouse->ps2dev;
81 unsigned char param[4];
85 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
86 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
87 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
88 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
89 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
95 psmouse->vendor = "Synaptics";
96 psmouse->name = "TouchPad";
102 void synaptics_reset(struct psmouse *psmouse)
104 /* reset touchpad back to relative mode, gestures enabled */
105 synaptics_mode_cmd(psmouse, 0);
108 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
110 /*****************************************************************************
111 * Synaptics communications functions
112 ****************************************************************************/
115 * Send a command to the synpatics touchpad by special commands
117 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
119 if (psmouse_sliced_command(psmouse, c))
121 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
127 * Read the model-id bytes from the touchpad
128 * see also SYN_MODEL_* macros
130 static int synaptics_model_id(struct psmouse *psmouse)
132 struct synaptics_data *priv = psmouse->private;
135 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
137 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
142 * Read the board id from the touchpad
143 * The board id is encoded in the "QUERY MODES" response
145 static int synaptics_board_id(struct psmouse *psmouse)
147 struct synaptics_data *priv = psmouse->private;
148 unsigned char bid[3];
150 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
152 priv->board_id = (((unsigned)bid[0] & 0xfc) << 6) | (unsigned)bid[1];
157 * Read the firmware id from the touchpad
159 static int synaptics_firmware_id(struct psmouse *psmouse)
161 struct synaptics_data *priv = psmouse->private;
162 unsigned char fwid[3];
164 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
166 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
171 * Read the capability-bits from the touchpad
172 * see also the SYN_CAP_* macros
174 static int synaptics_capability(struct psmouse *psmouse)
176 struct synaptics_data *priv = psmouse->private;
177 unsigned char cap[3];
179 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
181 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
182 priv->ext_cap = priv->ext_cap_0c = 0;
185 * Older firmwares had submodel ID fixed to 0x47
187 if (SYN_ID_FULL(priv->identity) < 0x705 &&
188 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
193 * Unless capExtended is set the rest of the flags should be ignored
195 if (!SYN_CAP_EXTENDED(priv->capabilities))
196 priv->capabilities = 0;
198 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
199 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
200 psmouse_warn(psmouse,
201 "device claims to have extended capabilities, but I'm not able to read them.\n");
203 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
206 * if nExtBtn is greater than 8 it should be considered
207 * invalid and treated as 0
209 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
210 priv->ext_cap &= 0xff0fff;
214 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
215 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
216 psmouse_warn(psmouse,
217 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
219 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
228 * See also the SYN_ID_* macros
230 static int synaptics_identify(struct psmouse *psmouse)
232 struct synaptics_data *priv = psmouse->private;
235 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
237 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
238 if (SYN_ID_IS_SYNAPTICS(priv->identity))
244 * Read touchpad resolution and maximum reported coordinates
245 * Resolution is left zero if touchpad does not support the query
247 static int synaptics_resolution(struct psmouse *psmouse)
249 struct synaptics_data *priv = psmouse->private;
250 unsigned char resp[3];
252 if (SYN_ID_MAJOR(priv->identity) < 4)
255 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
256 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
257 priv->x_res = resp[0]; /* x resolution in units/mm */
258 priv->y_res = resp[2]; /* y resolution in units/mm */
262 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
263 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
264 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
265 psmouse_warn(psmouse,
266 "device claims to have max coordinates query, but I'm not able to read it.\n");
268 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
269 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
273 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
274 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
275 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
276 psmouse_warn(psmouse,
277 "device claims to have min coordinates query, but I'm not able to read it.\n");
279 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
280 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
287 static int synaptics_query_hardware(struct psmouse *psmouse)
289 if (synaptics_identify(psmouse))
291 if (synaptics_model_id(psmouse))
293 if (synaptics_firmware_id(psmouse))
295 if (synaptics_board_id(psmouse))
297 if (synaptics_capability(psmouse))
299 if (synaptics_resolution(psmouse))
305 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
307 static unsigned char param = 0xc8;
308 struct synaptics_data *priv = psmouse->private;
310 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
311 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
314 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
317 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
320 /* Advanced gesture mode also sends multi finger data */
321 priv->capabilities |= BIT(1);
326 static int synaptics_set_mode(struct psmouse *psmouse)
328 struct synaptics_data *priv = psmouse->private;
331 if (priv->absolute_mode)
332 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
333 if (priv->disable_gesture)
334 priv->mode |= SYN_BIT_DISABLE_GESTURE;
335 if (psmouse->rate >= 80)
336 priv->mode |= SYN_BIT_HIGH_RATE;
337 if (SYN_CAP_EXTENDED(priv->capabilities))
338 priv->mode |= SYN_BIT_W_MODE;
340 if (synaptics_mode_cmd(psmouse, priv->mode))
343 if (priv->absolute_mode &&
344 synaptics_set_advanced_gesture_mode(psmouse)) {
345 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
352 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
354 struct synaptics_data *priv = psmouse->private;
357 priv->mode |= SYN_BIT_HIGH_RATE;
360 priv->mode &= ~SYN_BIT_HIGH_RATE;
364 synaptics_mode_cmd(psmouse, priv->mode);
367 /*****************************************************************************
368 * Synaptics pass-through PS/2 port support
369 ****************************************************************************/
370 static int synaptics_pt_write(struct serio *serio, unsigned char c)
372 struct psmouse *parent = serio_get_drvdata(serio->parent);
373 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
375 if (psmouse_sliced_command(parent, c))
377 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
382 static int synaptics_pt_start(struct serio *serio)
384 struct psmouse *parent = serio_get_drvdata(serio->parent);
385 struct synaptics_data *priv = parent->private;
387 serio_pause_rx(parent->ps2dev.serio);
388 priv->pt_port = serio;
389 serio_continue_rx(parent->ps2dev.serio);
394 static void synaptics_pt_stop(struct serio *serio)
396 struct psmouse *parent = serio_get_drvdata(serio->parent);
397 struct synaptics_data *priv = parent->private;
399 serio_pause_rx(parent->ps2dev.serio);
400 priv->pt_port = NULL;
401 serio_continue_rx(parent->ps2dev.serio);
404 static int synaptics_is_pt_packet(unsigned char *buf)
406 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
409 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
411 struct psmouse *child = serio_get_drvdata(ptport);
413 if (child && child->state == PSMOUSE_ACTIVATED) {
414 serio_interrupt(ptport, packet[1], 0);
415 serio_interrupt(ptport, packet[4], 0);
416 serio_interrupt(ptport, packet[5], 0);
417 if (child->pktsize == 4)
418 serio_interrupt(ptport, packet[2], 0);
420 serio_interrupt(ptport, packet[1], 0);
423 static void synaptics_pt_activate(struct psmouse *psmouse)
425 struct synaptics_data *priv = psmouse->private;
426 struct psmouse *child = serio_get_drvdata(priv->pt_port);
428 /* adjust the touchpad to child's choice of protocol */
430 if (child->pktsize == 4)
431 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
433 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
435 if (synaptics_mode_cmd(psmouse, priv->mode))
436 psmouse_warn(psmouse,
437 "failed to switch guest protocol\n");
441 static void synaptics_pt_create(struct psmouse *psmouse)
445 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
448 "not enough memory for pass-through port\n");
452 serio->id.type = SERIO_PS_PSTHRU;
453 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
454 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
455 serio->write = synaptics_pt_write;
456 serio->start = synaptics_pt_start;
457 serio->stop = synaptics_pt_stop;
458 serio->parent = psmouse->ps2dev.serio;
460 psmouse->pt_activate = synaptics_pt_activate;
462 psmouse_info(psmouse, "serio: %s port at %s\n",
463 serio->name, psmouse->phys);
464 serio_register_port(serio);
467 /*****************************************************************************
468 * Functions to interpret the absolute mode packets
469 ****************************************************************************/
471 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
474 state->count = count;
479 static void synaptics_parse_agm(const unsigned char buf[],
480 struct synaptics_data *priv,
481 struct synaptics_hw_state *hw)
483 struct synaptics_hw_state *agm = &priv->agm;
486 agm_packet_type = (buf[5] & 0x30) >> 4;
487 switch (agm_packet_type) {
489 /* Gesture packet: (x, y, z) half resolution */
491 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
492 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
493 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
497 /* AGM-CONTACT packet: (count, sgm, agm) */
498 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
505 /* Record that at least one AGM has been received since last SGM */
506 priv->agm_pending = true;
509 static int synaptics_parse_hw_state(const unsigned char buf[],
510 struct synaptics_data *priv,
511 struct synaptics_hw_state *hw)
513 memset(hw, 0, sizeof(struct synaptics_hw_state));
515 if (SYN_MODEL_NEWABS(priv->model_id)) {
516 hw->w = (((buf[0] & 0x30) >> 2) |
517 ((buf[0] & 0x04) >> 1) |
518 ((buf[3] & 0x04) >> 2));
520 hw->left = (buf[0] & 0x01) ? 1 : 0;
521 hw->right = (buf[0] & 0x02) ? 1 : 0;
523 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
525 * Clickpad's button is transmitted as middle button,
526 * however, since it is primary button, we will report
529 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
531 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
532 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
534 hw->scroll = (signed char)(buf[1]);
537 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
538 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
539 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
542 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
543 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
545 synaptics_parse_agm(buf, priv, hw);
549 hw->x = (((buf[3] & 0x10) << 8) |
550 ((buf[1] & 0x0f) << 8) |
552 hw->y = (((buf[3] & 0x20) << 7) |
553 ((buf[1] & 0xf0) << 4) |
557 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
558 ((buf[0] ^ buf[3]) & 0x02)) {
559 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
562 * if nExtBtn is greater than 8 it should be
563 * considered invalid and treated as 0
567 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
568 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
570 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
571 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
573 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
574 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
576 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
577 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
581 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
582 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
584 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
585 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
587 hw->left = (buf[0] & 0x01) ? 1 : 0;
588 hw->right = (buf[0] & 0x02) ? 1 : 0;
594 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
595 bool active, int x, int y)
597 input_mt_slot(dev, slot);
598 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
600 input_report_abs(dev, ABS_MT_POSITION_X, x);
601 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
605 static void synaptics_report_semi_mt_data(struct input_dev *dev,
606 const struct synaptics_hw_state *a,
607 const struct synaptics_hw_state *b,
610 if (num_fingers >= 2) {
611 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
613 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
615 } else if (num_fingers == 1) {
616 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
617 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
619 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
620 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
624 static void synaptics_report_buttons(struct psmouse *psmouse,
625 const struct synaptics_hw_state *hw)
627 struct input_dev *dev = psmouse->dev;
628 struct synaptics_data *priv = psmouse->private;
631 input_report_key(dev, BTN_LEFT, hw->left);
632 input_report_key(dev, BTN_RIGHT, hw->right);
634 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
635 input_report_key(dev, BTN_MIDDLE, hw->middle);
637 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
638 input_report_key(dev, BTN_FORWARD, hw->up);
639 input_report_key(dev, BTN_BACK, hw->down);
642 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
643 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
646 static void synaptics_report_slot(struct input_dev *dev, int slot,
647 const struct synaptics_hw_state *hw)
649 input_mt_slot(dev, slot);
650 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
654 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
655 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
656 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
659 static void synaptics_report_mt_data(struct psmouse *psmouse,
660 struct synaptics_mt_state *mt_state,
661 const struct synaptics_hw_state *sgm)
663 struct input_dev *dev = psmouse->dev;
664 struct synaptics_data *priv = psmouse->private;
665 struct synaptics_hw_state *agm = &priv->agm;
666 struct synaptics_mt_state *old = &priv->mt_state;
668 switch (mt_state->count) {
670 synaptics_report_slot(dev, 0, NULL);
671 synaptics_report_slot(dev, 1, NULL);
674 if (mt_state->sgm == -1) {
675 synaptics_report_slot(dev, 0, NULL);
676 synaptics_report_slot(dev, 1, NULL);
677 } else if (mt_state->sgm == 0) {
678 synaptics_report_slot(dev, 0, sgm);
679 synaptics_report_slot(dev, 1, NULL);
681 synaptics_report_slot(dev, 0, NULL);
682 synaptics_report_slot(dev, 1, sgm);
687 * If the finger slot contained in SGM is valid, and either
688 * hasn't changed, or is new, or the old SGM has now moved to
689 * AGM, then report SGM in MTB slot 0.
690 * Otherwise, empty MTB slot 0.
692 if (mt_state->sgm != -1 &&
693 (mt_state->sgm == old->sgm ||
694 old->sgm == -1 || mt_state->agm == old->sgm))
695 synaptics_report_slot(dev, 0, sgm);
697 synaptics_report_slot(dev, 0, NULL);
700 * If the finger slot contained in AGM is valid, and either
701 * hasn't changed, or is new, then report AGM in MTB slot 1.
702 * Otherwise, empty MTB slot 1.
704 * However, in the case where the AGM is new, make sure that
705 * that it is either the same as the old SGM, or there was no
708 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
709 * the new AGM will keep the old SGM's tracking ID, which can
710 * cause apparent drumroll. This happens if in the following
711 * valid finger sequence:
713 * Action SGM AGM (MTB slot:Contact)
714 * 1. Touch contact 0 (0:0)
715 * 2. Touch contact 1 (0:0, 1:1)
716 * 3. Lift contact 0 (1:1)
717 * 4. Touch contacts 2,3 (0:2, 1:3)
719 * In step 4, contact 3, in AGM must not be given the same
720 * tracking ID as contact 1 had in step 3. To avoid this,
721 * the first agm with contact 3 is dropped and slot 1 is
722 * invalidated (tracking ID = -1).
724 if (mt_state->agm != -1 &&
725 (mt_state->agm == old->agm ||
727 (old->sgm == -1 || mt_state->agm == old->sgm))))
728 synaptics_report_slot(dev, 1, agm);
730 synaptics_report_slot(dev, 1, NULL);
734 /* Don't use active slot count to generate BTN_TOOL events. */
735 input_mt_report_pointer_emulation(dev, false);
737 /* Send the number of fingers reported by touchpad itself. */
738 input_mt_report_finger_count(dev, mt_state->count);
740 synaptics_report_buttons(psmouse, sgm);
745 /* Handle case where mt_state->count = 0 */
746 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
747 struct synaptics_mt_state *mt_state)
749 synaptics_mt_state_set(mt_state, 0, -1, -1);
750 priv->mt_state_lost = false;
753 /* Handle case where mt_state->count = 1 */
754 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
755 struct synaptics_mt_state *mt_state)
757 struct synaptics_hw_state *agm = &priv->agm;
758 struct synaptics_mt_state *old = &priv->mt_state;
761 * If the last AGM was (0,0,0), and there is only one finger left,
762 * then we absolutely know that SGM contains slot 0, and all other
763 * fingers have been removed.
765 if (priv->agm_pending && agm->z == 0) {
766 synaptics_mt_state_set(mt_state, 1, 0, -1);
767 priv->mt_state_lost = false;
771 switch (old->count) {
773 synaptics_mt_state_set(mt_state, 1, 0, -1);
777 * If mt_state_lost, then the previous transition was 3->1,
778 * and SGM now contains either slot 0 or 1, but we don't know
779 * which. So, we just assume that the SGM now contains slot 1.
781 * If pending AGM and either:
782 * (a) the previous SGM slot contains slot 0, or
783 * (b) there was no SGM slot
784 * then, the SGM now contains slot 1
786 * Case (a) happens with very rapid "drum roll" gestures, where
787 * slot 0 finger is lifted and a new slot 1 finger touches
788 * within one reporting interval.
790 * Case (b) happens if initially two or more fingers tap
791 * briefly, and all but one lift before the end of the first
792 * reporting interval.
794 * (In both these cases, slot 0 will becomes empty, so SGM
795 * contains slot 1 with the new finger)
797 * Else, if there was no previous SGM, it now contains slot 0.
799 * Otherwise, SGM still contains the same slot.
801 if (priv->mt_state_lost ||
802 (priv->agm_pending && old->sgm <= 0))
803 synaptics_mt_state_set(mt_state, 1, 1, -1);
804 else if (old->sgm == -1)
805 synaptics_mt_state_set(mt_state, 1, 0, -1);
809 * If mt_state_lost, we don't know which finger SGM contains.
811 * So, report 1 finger, but with both slots empty.
812 * We will use slot 1 on subsequent 1->1
814 if (priv->mt_state_lost) {
815 synaptics_mt_state_set(mt_state, 1, -1, -1);
819 * Since the last AGM was NOT (0,0,0), it was the finger in
820 * slot 0 that has been removed.
821 * So, SGM now contains previous AGM's slot, and AGM is now
824 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
828 * Since last AGM was not (0,0,0), we don't know which finger
831 * So, report 1 finger, but with both slots empty.
832 * We will use slot 1 on subsequent 1->1
834 synaptics_mt_state_set(mt_state, 1, -1, -1);
835 priv->mt_state_lost = true;
839 /* mt_state was updated by AGM-CONTACT packet */
844 /* Handle case where mt_state->count = 2 */
845 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
846 struct synaptics_mt_state *mt_state)
848 struct synaptics_mt_state *old = &priv->mt_state;
850 switch (old->count) {
852 synaptics_mt_state_set(mt_state, 2, 0, 1);
856 * If previous SGM contained slot 1 or higher, SGM now contains
857 * slot 0 (the newly touching finger) and AGM contains SGM's
860 * Otherwise, SGM still contains slot 0 and AGM now contains
864 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
866 synaptics_mt_state_set(mt_state, 2, 0, 1);
870 * If mt_state_lost, SGM now contains either finger 1 or 2, but
871 * we don't know which.
872 * So, we just assume that the SGM contains slot 0 and AGM 1.
874 if (priv->mt_state_lost)
875 synaptics_mt_state_set(mt_state, 2, 0, 1);
877 * Otherwise, use the same mt_state, since it either hasn't
878 * changed, or was updated by a recently received AGM-CONTACT
884 * 3->2 transitions have two unsolvable problems:
885 * 1) no indication is given which finger was removed
886 * 2) no way to tell if agm packet was for finger 3
887 * before 3->2, or finger 2 after 3->2.
889 * So, report 2 fingers, but empty all slots.
890 * We will guess slots [0,1] on subsequent 2->2.
892 synaptics_mt_state_set(mt_state, 2, -1, -1);
893 priv->mt_state_lost = true;
897 /* mt_state was updated by AGM-CONTACT packet */
902 /* Handle case where mt_state->count = 3 */
903 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
904 struct synaptics_mt_state *mt_state)
906 struct synaptics_mt_state *old = &priv->mt_state;
908 switch (old->count) {
910 synaptics_mt_state_set(mt_state, 3, 0, 2);
914 * If previous SGM contained slot 2 or higher, SGM now contains
915 * slot 0 (one of the newly touching fingers) and AGM contains
916 * SGM's previous slot.
918 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
921 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
923 synaptics_mt_state_set(mt_state, 3, 0, 2);
927 * If the AGM previously contained slot 3 or higher, then the
928 * newly touching finger is in the lowest available slot.
930 * If SGM was previously 1 or higher, then the new SGM is
931 * now slot 0 (with a new finger), otherwise, the new finger
932 * is now in a hidden slot between 0 and AGM's slot.
934 * In all such cases, the SGM now contains slot 0, and the AGM
935 * continues to contain the same slot as before.
938 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
943 * After some 3->1 and all 3->2 transitions, we lose track
944 * of which slot is reported by SGM and AGM.
946 * For 2->3 in this state, report 3 fingers, but empty all
947 * slots, and we will guess (0,2) on a subsequent 0->3.
949 * To userspace, the resulting transition will look like:
950 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
952 if (priv->mt_state_lost) {
953 synaptics_mt_state_set(mt_state, 3, -1, -1);
958 * If the (SGM,AGM) really previously contained slots (0, 1),
959 * then we cannot know what slot was just reported by the AGM,
960 * because the 2->3 transition can occur either before or after
961 * the AGM packet. Thus, this most recent AGM could contain
962 * either the same old slot 1 or the new slot 2.
963 * Subsequent AGMs will be reporting slot 2.
965 * To userspace, the resulting transition will look like:
966 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
968 synaptics_mt_state_set(mt_state, 3, 0, -1);
972 * If, for whatever reason, the previous agm was invalid,
973 * Assume SGM now contains slot 0, AGM now contains slot 2.
976 synaptics_mt_state_set(mt_state, 3, 0, 2);
978 * mt_state either hasn't changed, or was updated by a recently
979 * received AGM-CONTACT packet.
985 /* mt_state was updated by AGM-CONTACT packet */
990 /* Handle case where mt_state->count = 4, or = 5 */
991 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
992 struct synaptics_mt_state *mt_state)
994 /* mt_state was updated correctly by AGM-CONTACT packet */
995 priv->mt_state_lost = false;
998 static void synaptics_image_sensor_process(struct psmouse *psmouse,
999 struct synaptics_hw_state *sgm)
1001 struct synaptics_data *priv = psmouse->private;
1002 struct synaptics_hw_state *agm = &priv->agm;
1003 struct synaptics_mt_state mt_state;
1005 /* Initialize using current mt_state (as updated by last agm) */
1006 mt_state = agm->mt_state;
1009 * Update mt_state using the new finger count and current mt_state.
1012 synaptics_image_sensor_0f(priv, &mt_state);
1013 else if (sgm->w >= 4)
1014 synaptics_image_sensor_1f(priv, &mt_state);
1015 else if (sgm->w == 0)
1016 synaptics_image_sensor_2f(priv, &mt_state);
1017 else if (sgm->w == 1 && mt_state.count <= 3)
1018 synaptics_image_sensor_3f(priv, &mt_state);
1020 synaptics_image_sensor_45f(priv, &mt_state);
1022 /* Send resulting input events to user space */
1023 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1025 /* Store updated mt_state */
1026 priv->mt_state = agm->mt_state = mt_state;
1027 priv->agm_pending = false;
1031 * called for each full received packet from the touchpad
1033 static void synaptics_process_packet(struct psmouse *psmouse)
1035 struct input_dev *dev = psmouse->dev;
1036 struct synaptics_data *priv = psmouse->private;
1037 struct synaptics_hw_state hw;
1041 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1044 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1045 synaptics_image_sensor_process(psmouse, &hw);
1050 priv->scroll += hw.scroll;
1052 while (priv->scroll >= 4) {
1053 input_report_key(dev, BTN_BACK, !hw.down);
1055 input_report_key(dev, BTN_BACK, hw.down);
1059 while (priv->scroll <= -4) {
1060 input_report_key(dev, BTN_FORWARD, !hw.up);
1062 input_report_key(dev, BTN_FORWARD, hw.up);
1069 if (hw.z > 0 && hw.x > 1) {
1072 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1075 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1076 num_fingers = hw.w + 2;
1079 if (SYN_MODEL_PEN(priv->model_id))
1080 ; /* Nothing, treat a pen as a single finger */
1083 if (SYN_CAP_PALMDETECT(priv->capabilities))
1084 finger_width = hw.w;
1093 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1094 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1098 * BTN_TOUCH has to be first as mousedev relies on it when doing
1099 * absolute -> relative conversion
1101 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1102 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1104 if (num_fingers > 0) {
1105 input_report_abs(dev, ABS_X, hw.x);
1106 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1108 input_report_abs(dev, ABS_PRESSURE, hw.z);
1110 if (SYN_CAP_PALMDETECT(priv->capabilities))
1111 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1113 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1114 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1115 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1116 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1119 synaptics_report_buttons(psmouse, &hw);
1124 static int synaptics_validate_byte(struct psmouse *psmouse,
1125 int idx, unsigned char pkt_type)
1127 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1128 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1129 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1130 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1131 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1132 const char *packet = psmouse->packet;
1134 if (idx < 0 || idx > 4)
1140 case SYN_NEWABS_RELAXED:
1141 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1143 case SYN_NEWABS_STRICT:
1144 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1147 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1150 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1155 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1159 for (i = 0; i < 5; i++)
1160 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1161 psmouse_info(psmouse, "using relaxed packet validation\n");
1162 return SYN_NEWABS_RELAXED;
1165 return SYN_NEWABS_STRICT;
1168 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1170 struct synaptics_data *priv = psmouse->private;
1172 if (psmouse->pktcnt >= 6) { /* Full packet received */
1173 if (unlikely(priv->pkt_type == SYN_NEWABS))
1174 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1176 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1177 synaptics_is_pt_packet(psmouse->packet)) {
1179 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1181 synaptics_process_packet(psmouse);
1183 return PSMOUSE_FULL_PACKET;
1186 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1187 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1190 /*****************************************************************************
1191 * Driver initialization/cleanup functions
1192 ****************************************************************************/
1193 static void set_abs_position_params(struct input_dev *dev,
1194 struct synaptics_data *priv, int x_code,
1197 int x_min = priv->x_min ?: XMIN_NOMINAL;
1198 int x_max = priv->x_max ?: XMAX_NOMINAL;
1199 int y_min = priv->y_min ?: YMIN_NOMINAL;
1200 int y_max = priv->y_max ?: YMAX_NOMINAL;
1201 int fuzz = (SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) &&
1202 !SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) ?
1203 SYN_REDUCED_FILTER_FUZZ : 0;
1205 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1206 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1207 input_abs_set_res(dev, x_code, priv->x_res);
1208 input_abs_set_res(dev, y_code, priv->y_res);
1211 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
1215 /* Things that apply to both modes */
1216 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1217 __set_bit(EV_KEY, dev->evbit);
1218 __set_bit(BTN_LEFT, dev->keybit);
1219 __set_bit(BTN_RIGHT, dev->keybit);
1221 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1222 __set_bit(BTN_MIDDLE, dev->keybit);
1224 if (!priv->absolute_mode) {
1226 __set_bit(EV_REL, dev->evbit);
1227 __set_bit(REL_X, dev->relbit);
1228 __set_bit(REL_Y, dev->relbit);
1233 __set_bit(EV_ABS, dev->evbit);
1234 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1235 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1237 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1238 input_mt_init_slots(dev, 2);
1239 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1241 /* Image sensors can report per-contact pressure */
1242 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1244 /* Image sensors can signal 4 and 5 finger clicks */
1245 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1246 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1247 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1248 /* Non-image sensors with AGM use semi-mt */
1249 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1250 input_mt_init_slots(dev, 2);
1251 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1255 if (SYN_CAP_PALMDETECT(priv->capabilities))
1256 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1258 __set_bit(BTN_TOUCH, dev->keybit);
1259 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1261 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1262 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1263 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1266 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1267 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1268 __set_bit(BTN_FORWARD, dev->keybit);
1269 __set_bit(BTN_BACK, dev->keybit);
1272 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1273 __set_bit(BTN_0 + i, dev->keybit);
1275 __clear_bit(EV_REL, dev->evbit);
1276 __clear_bit(REL_X, dev->relbit);
1277 __clear_bit(REL_Y, dev->relbit);
1279 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1280 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1281 /* Clickpads report only left button */
1282 __clear_bit(BTN_RIGHT, dev->keybit);
1283 __clear_bit(BTN_MIDDLE, dev->keybit);
1287 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1288 void *data, char *buf)
1290 struct synaptics_data *priv = psmouse->private;
1292 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1295 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1296 void *data, const char *buf,
1299 struct synaptics_data *priv = psmouse->private;
1303 err = kstrtouint(buf, 10, &value);
1310 if (value == priv->disable_gesture)
1313 priv->disable_gesture = value;
1315 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1317 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1319 if (synaptics_mode_cmd(psmouse, priv->mode))
1325 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1326 synaptics_show_disable_gesture,
1327 synaptics_set_disable_gesture);
1329 static void synaptics_disconnect(struct psmouse *psmouse)
1331 struct synaptics_data *priv = psmouse->private;
1333 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1334 device_remove_file(&psmouse->ps2dev.serio->dev,
1335 &psmouse_attr_disable_gesture.dattr);
1337 synaptics_reset(psmouse);
1339 psmouse->private = NULL;
1342 static int synaptics_reconnect(struct psmouse *psmouse)
1344 struct synaptics_data *priv = psmouse->private;
1345 struct synaptics_data old_priv = *priv;
1350 psmouse_reset(psmouse);
1353 * On some boxes, right after resuming, the touchpad
1354 * needs some time to finish initializing (I assume
1355 * it needs time to calibrate) and start responding
1356 * to Synaptics-specific queries, so let's wait a
1361 error = synaptics_detect(psmouse, 0);
1362 } while (error && ++retry < 3);
1368 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1370 if (synaptics_query_hardware(psmouse)) {
1371 psmouse_err(psmouse, "Unable to query device.\n");
1375 if (synaptics_set_mode(psmouse)) {
1376 psmouse_err(psmouse, "Unable to initialize device.\n");
1380 if (old_priv.identity != priv->identity ||
1381 old_priv.model_id != priv->model_id ||
1382 old_priv.capabilities != priv->capabilities ||
1383 old_priv.ext_cap != priv->ext_cap) {
1384 psmouse_err(psmouse,
1385 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1386 old_priv.identity, priv->identity,
1387 old_priv.model_id, priv->model_id,
1388 old_priv.capabilities, priv->capabilities,
1389 old_priv.ext_cap, priv->ext_cap);
1396 static bool impaired_toshiba_kbc;
1398 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
1399 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1401 /* Toshiba Satellite */
1403 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1404 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1408 /* Toshiba Dynabook */
1410 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1411 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1415 /* Toshiba Portege M300 */
1417 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1418 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1423 /* Toshiba Portege M300 */
1425 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1426 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1427 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1435 static bool broken_olpc_ec;
1437 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
1438 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1440 /* OLPC XO-1 or XO-1.5 */
1442 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1443 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1450 void __init synaptics_module_init(void)
1452 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1453 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1456 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1458 struct synaptics_data *priv;
1462 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1463 * packet spew overloads the EC such that key presses on the keyboard
1464 * are missed. Given that, don't even attempt to use Absolute mode.
1465 * Relative mode seems to work just fine.
1467 if (absolute_mode && broken_olpc_ec) {
1468 psmouse_info(psmouse,
1469 "OLPC XO detected, not enabling Synaptics protocol.\n");
1473 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1477 psmouse_reset(psmouse);
1479 if (synaptics_query_hardware(psmouse)) {
1480 psmouse_err(psmouse, "Unable to query device.\n");
1484 priv->absolute_mode = absolute_mode;
1485 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1486 priv->disable_gesture = true;
1488 if (synaptics_set_mode(psmouse)) {
1489 psmouse_err(psmouse, "Unable to initialize device.\n");
1493 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1495 psmouse_info(psmouse,
1496 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1497 SYN_ID_MODEL(priv->identity),
1498 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1500 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1501 priv->board_id, priv->firmware_id);
1503 set_input_params(psmouse->dev, priv);
1506 * Encode touchpad model so that it can be used to set
1507 * input device->id.version and be visible to userspace.
1508 * Because version is __u16 we have to drop something.
1509 * Hardware info bits seem to be good candidates as they
1510 * are documented to be for Synaptics corp. internal use.
1512 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1513 (priv->model_id & 0x000000ff);
1515 if (absolute_mode) {
1516 psmouse->protocol_handler = synaptics_process_byte;
1517 psmouse->pktsize = 6;
1519 /* Relative mode follows standard PS/2 mouse protocol */
1520 psmouse->protocol_handler = psmouse_process_byte;
1521 psmouse->pktsize = 3;
1524 psmouse->set_rate = synaptics_set_rate;
1525 psmouse->disconnect = synaptics_disconnect;
1526 psmouse->reconnect = synaptics_reconnect;
1527 psmouse->cleanup = synaptics_reset;
1528 /* Synaptics can usually stay in sync without extra help */
1529 psmouse->resync_time = 0;
1531 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1532 synaptics_pt_create(psmouse);
1535 * Toshiba's KBC seems to have trouble handling data from
1536 * Synaptics at full rate. Switch to a lower rate (roughly
1537 * the same rate as a standard PS/2 mouse).
1539 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1540 psmouse_info(psmouse,
1541 "Toshiba %s detected, limiting rate to 40pps.\n",
1542 dmi_get_system_info(DMI_PRODUCT_NAME));
1546 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1547 err = device_create_file(&psmouse->ps2dev.serio->dev,
1548 &psmouse_attr_disable_gesture.dattr);
1550 psmouse_err(psmouse,
1551 "Failed to create disable_gesture attribute (%d)",
1564 int synaptics_init(struct psmouse *psmouse)
1566 return __synaptics_init(psmouse, true);
1569 int synaptics_init_relative(struct psmouse *psmouse)
1571 return __synaptics_init(psmouse, false);
1574 bool synaptics_supported(void)
1579 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1581 void __init synaptics_module_init(void)
1585 int synaptics_init(struct psmouse *psmouse)
1590 bool synaptics_supported(void)
1595 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */