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
120 struct min_max_quirk {
121 const char * const *pnp_ids;
122 int x_min, x_max, y_min, y_max;
125 static const struct min_max_quirk min_max_pnpid_table[] = {
127 (const char * const []){"LEN0033", NULL},
128 1024, 5052, 2258, 4832
131 (const char * const []){"LEN0035", "LEN0042", NULL},
132 1232, 5710, 1156, 4696
135 (const char * const []){"LEN0034", "LEN0036", "LEN2004", NULL},
136 1024, 5112, 2024, 4832
139 (const char * const []){"LEN2001", NULL},
140 1024, 5022, 2508, 4832
145 /* This list has been kindly provided by Synaptics. */
146 static const char * const topbuttonpad_pnp_ids[] = {
156 "LEN0033", /* Helix */
157 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
158 "LEN0035", /* X240 */
159 "LEN0036", /* T440 */
163 "LEN0042", /* Yoga */
170 "LEN2001", /* Edge E431 */
173 "LEN2004", /* L440 */
184 static bool matches_pnp_id(struct psmouse *psmouse, const char * const ids[])
188 if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4))
189 for (i = 0; ids[i]; i++)
190 if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i]))
196 /*****************************************************************************
197 * Synaptics communications functions
198 ****************************************************************************/
201 * Synaptics touchpads report the y coordinate from bottom to top, which is
202 * opposite from what userspace expects.
203 * This function is used to invert y before reporting.
205 static int synaptics_invert_y(int y)
207 return YMAX_NOMINAL + YMIN_NOMINAL - y;
211 * Send a command to the synpatics touchpad by special commands
213 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
215 if (psmouse_sliced_command(psmouse, c))
217 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
223 * Read the model-id bytes from the touchpad
224 * see also SYN_MODEL_* macros
226 static int synaptics_model_id(struct psmouse *psmouse)
228 struct synaptics_data *priv = psmouse->private;
231 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
233 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
238 * Read the board id from the touchpad
239 * The board id is encoded in the "QUERY MODES" response
241 static int synaptics_board_id(struct psmouse *psmouse)
243 struct synaptics_data *priv = psmouse->private;
244 unsigned char bid[3];
246 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
248 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
253 * Read the firmware id from the touchpad
255 static int synaptics_firmware_id(struct psmouse *psmouse)
257 struct synaptics_data *priv = psmouse->private;
258 unsigned char fwid[3];
260 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
262 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
267 * Read the capability-bits from the touchpad
268 * see also the SYN_CAP_* macros
270 static int synaptics_capability(struct psmouse *psmouse)
272 struct synaptics_data *priv = psmouse->private;
273 unsigned char cap[3];
275 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
277 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
278 priv->ext_cap = priv->ext_cap_0c = 0;
281 * Older firmwares had submodel ID fixed to 0x47
283 if (SYN_ID_FULL(priv->identity) < 0x705 &&
284 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
289 * Unless capExtended is set the rest of the flags should be ignored
291 if (!SYN_CAP_EXTENDED(priv->capabilities))
292 priv->capabilities = 0;
294 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
295 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
296 psmouse_warn(psmouse,
297 "device claims to have extended capabilities, but I'm not able to read them.\n");
299 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
302 * if nExtBtn is greater than 8 it should be considered
303 * invalid and treated as 0
305 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
306 priv->ext_cap &= 0xff0fff;
310 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
311 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
312 psmouse_warn(psmouse,
313 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
315 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
324 * See also the SYN_ID_* macros
326 static int synaptics_identify(struct psmouse *psmouse)
328 struct synaptics_data *priv = psmouse->private;
331 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
333 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
334 if (SYN_ID_IS_SYNAPTICS(priv->identity))
340 * Read touchpad resolution and maximum reported coordinates
341 * Resolution is left zero if touchpad does not support the query
344 static int synaptics_resolution(struct psmouse *psmouse)
346 struct synaptics_data *priv = psmouse->private;
347 unsigned char resp[3];
350 if (SYN_ID_MAJOR(priv->identity) < 4)
353 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
354 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
355 priv->x_res = resp[0]; /* x resolution in units/mm */
356 priv->y_res = resp[2]; /* y resolution in units/mm */
360 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
361 if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
362 priv->x_min = min_max_pnpid_table[i].x_min;
363 priv->x_max = min_max_pnpid_table[i].x_max;
364 priv->y_min = min_max_pnpid_table[i].y_min;
365 priv->y_max = min_max_pnpid_table[i].y_max;
370 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
371 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
372 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
373 psmouse_warn(psmouse,
374 "device claims to have max coordinates query, but I'm not able to read it.\n");
376 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
377 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
381 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
382 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
383 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
384 psmouse_warn(psmouse,
385 "device claims to have min coordinates query, but I'm not able to read it.\n");
387 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
388 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
395 static int synaptics_query_hardware(struct psmouse *psmouse)
397 if (synaptics_identify(psmouse))
399 if (synaptics_model_id(psmouse))
401 if (synaptics_firmware_id(psmouse))
403 if (synaptics_board_id(psmouse))
405 if (synaptics_capability(psmouse))
407 if (synaptics_resolution(psmouse))
413 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
415 static unsigned char param = 0xc8;
416 struct synaptics_data *priv = psmouse->private;
418 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
419 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
422 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
425 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
428 /* Advanced gesture mode also sends multi finger data */
429 priv->capabilities |= BIT(1);
434 static int synaptics_set_mode(struct psmouse *psmouse)
436 struct synaptics_data *priv = psmouse->private;
439 if (priv->absolute_mode)
440 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
441 if (priv->disable_gesture)
442 priv->mode |= SYN_BIT_DISABLE_GESTURE;
443 if (psmouse->rate >= 80)
444 priv->mode |= SYN_BIT_HIGH_RATE;
445 if (SYN_CAP_EXTENDED(priv->capabilities))
446 priv->mode |= SYN_BIT_W_MODE;
448 if (synaptics_mode_cmd(psmouse, priv->mode))
451 if (priv->absolute_mode &&
452 synaptics_set_advanced_gesture_mode(psmouse)) {
453 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
460 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
462 struct synaptics_data *priv = psmouse->private;
465 priv->mode |= SYN_BIT_HIGH_RATE;
468 priv->mode &= ~SYN_BIT_HIGH_RATE;
472 synaptics_mode_cmd(psmouse, priv->mode);
475 /*****************************************************************************
476 * Synaptics pass-through PS/2 port support
477 ****************************************************************************/
478 static int synaptics_pt_write(struct serio *serio, unsigned char c)
480 struct psmouse *parent = serio_get_drvdata(serio->parent);
481 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
483 if (psmouse_sliced_command(parent, c))
485 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
490 static int synaptics_pt_start(struct serio *serio)
492 struct psmouse *parent = serio_get_drvdata(serio->parent);
493 struct synaptics_data *priv = parent->private;
495 serio_pause_rx(parent->ps2dev.serio);
496 priv->pt_port = serio;
497 serio_continue_rx(parent->ps2dev.serio);
502 static void synaptics_pt_stop(struct serio *serio)
504 struct psmouse *parent = serio_get_drvdata(serio->parent);
505 struct synaptics_data *priv = parent->private;
507 serio_pause_rx(parent->ps2dev.serio);
508 priv->pt_port = NULL;
509 serio_continue_rx(parent->ps2dev.serio);
512 static int synaptics_is_pt_packet(unsigned char *buf)
514 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
517 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
519 struct psmouse *child = serio_get_drvdata(ptport);
521 if (child && child->state == PSMOUSE_ACTIVATED) {
522 serio_interrupt(ptport, packet[1], 0);
523 serio_interrupt(ptport, packet[4], 0);
524 serio_interrupt(ptport, packet[5], 0);
525 if (child->pktsize == 4)
526 serio_interrupt(ptport, packet[2], 0);
528 serio_interrupt(ptport, packet[1], 0);
531 static void synaptics_pt_activate(struct psmouse *psmouse)
533 struct synaptics_data *priv = psmouse->private;
534 struct psmouse *child = serio_get_drvdata(priv->pt_port);
536 /* adjust the touchpad to child's choice of protocol */
538 if (child->pktsize == 4)
539 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
541 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
543 if (synaptics_mode_cmd(psmouse, priv->mode))
544 psmouse_warn(psmouse,
545 "failed to switch guest protocol\n");
549 static void synaptics_pt_create(struct psmouse *psmouse)
553 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
556 "not enough memory for pass-through port\n");
560 serio->id.type = SERIO_PS_PSTHRU;
561 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
562 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
563 serio->write = synaptics_pt_write;
564 serio->start = synaptics_pt_start;
565 serio->stop = synaptics_pt_stop;
566 serio->parent = psmouse->ps2dev.serio;
568 psmouse->pt_activate = synaptics_pt_activate;
570 psmouse_info(psmouse, "serio: %s port at %s\n",
571 serio->name, psmouse->phys);
572 serio_register_port(serio);
575 /*****************************************************************************
576 * Functions to interpret the absolute mode packets
577 ****************************************************************************/
579 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
582 state->count = count;
587 static void synaptics_parse_agm(const unsigned char buf[],
588 struct synaptics_data *priv,
589 struct synaptics_hw_state *hw)
591 struct synaptics_hw_state *agm = &priv->agm;
594 agm_packet_type = (buf[5] & 0x30) >> 4;
595 switch (agm_packet_type) {
597 /* Gesture packet: (x, y, z) half resolution */
599 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
600 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
601 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
605 /* AGM-CONTACT packet: (count, sgm, agm) */
606 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
613 /* Record that at least one AGM has been received since last SGM */
614 priv->agm_pending = true;
617 static int synaptics_parse_hw_state(const unsigned char buf[],
618 struct synaptics_data *priv,
619 struct synaptics_hw_state *hw)
621 memset(hw, 0, sizeof(struct synaptics_hw_state));
623 if (SYN_MODEL_NEWABS(priv->model_id)) {
624 hw->w = (((buf[0] & 0x30) >> 2) |
625 ((buf[0] & 0x04) >> 1) |
626 ((buf[3] & 0x04) >> 2));
628 hw->left = (buf[0] & 0x01) ? 1 : 0;
629 hw->right = (buf[0] & 0x02) ? 1 : 0;
631 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
633 * Clickpad's button is transmitted as middle button,
634 * however, since it is primary button, we will report
637 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
639 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
640 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
642 hw->scroll = (signed char)(buf[1]);
645 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
646 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
647 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
650 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
651 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
653 synaptics_parse_agm(buf, priv, hw);
657 hw->x = (((buf[3] & 0x10) << 8) |
658 ((buf[1] & 0x0f) << 8) |
660 hw->y = (((buf[3] & 0x20) << 7) |
661 ((buf[1] & 0xf0) << 4) |
665 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
666 ((buf[0] ^ buf[3]) & 0x02)) {
667 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
670 * if nExtBtn is greater than 8 it should be
671 * considered invalid and treated as 0
675 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
676 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
678 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
679 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
681 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
682 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
684 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
685 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
689 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
690 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
692 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
693 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
695 hw->left = (buf[0] & 0x01) ? 1 : 0;
696 hw->right = (buf[0] & 0x02) ? 1 : 0;
700 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
701 * is used by some firmware to indicate a finger at the edge of
702 * the touchpad whose precise position cannot be determined, so
703 * convert these values to the maximum axis value.
705 if (hw->x > X_MAX_POSITIVE)
706 hw->x -= 1 << ABS_POS_BITS;
707 else if (hw->x == X_MAX_POSITIVE)
710 if (hw->y > Y_MAX_POSITIVE)
711 hw->y -= 1 << ABS_POS_BITS;
712 else if (hw->y == Y_MAX_POSITIVE)
718 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
719 bool active, int x, int y)
721 input_mt_slot(dev, slot);
722 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
724 input_report_abs(dev, ABS_MT_POSITION_X, x);
725 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
729 static void synaptics_report_semi_mt_data(struct input_dev *dev,
730 const struct synaptics_hw_state *a,
731 const struct synaptics_hw_state *b,
734 if (num_fingers >= 2) {
735 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
737 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
739 } else if (num_fingers == 1) {
740 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
741 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
743 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
744 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
748 static void synaptics_report_buttons(struct psmouse *psmouse,
749 const struct synaptics_hw_state *hw)
751 struct input_dev *dev = psmouse->dev;
752 struct synaptics_data *priv = psmouse->private;
755 input_report_key(dev, BTN_LEFT, hw->left);
756 input_report_key(dev, BTN_RIGHT, hw->right);
758 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
759 input_report_key(dev, BTN_MIDDLE, hw->middle);
761 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
762 input_report_key(dev, BTN_FORWARD, hw->up);
763 input_report_key(dev, BTN_BACK, hw->down);
766 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
767 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
770 static void synaptics_report_slot(struct input_dev *dev, int slot,
771 const struct synaptics_hw_state *hw)
773 input_mt_slot(dev, slot);
774 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
778 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
779 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
780 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
783 static void synaptics_report_mt_data(struct psmouse *psmouse,
784 struct synaptics_mt_state *mt_state,
785 const struct synaptics_hw_state *sgm)
787 struct input_dev *dev = psmouse->dev;
788 struct synaptics_data *priv = psmouse->private;
789 struct synaptics_hw_state *agm = &priv->agm;
790 struct synaptics_mt_state *old = &priv->mt_state;
792 switch (mt_state->count) {
794 synaptics_report_slot(dev, 0, NULL);
795 synaptics_report_slot(dev, 1, NULL);
798 if (mt_state->sgm == -1) {
799 synaptics_report_slot(dev, 0, NULL);
800 synaptics_report_slot(dev, 1, NULL);
801 } else if (mt_state->sgm == 0) {
802 synaptics_report_slot(dev, 0, sgm);
803 synaptics_report_slot(dev, 1, NULL);
805 synaptics_report_slot(dev, 0, NULL);
806 synaptics_report_slot(dev, 1, sgm);
811 * If the finger slot contained in SGM is valid, and either
812 * hasn't changed, or is new, or the old SGM has now moved to
813 * AGM, then report SGM in MTB slot 0.
814 * Otherwise, empty MTB slot 0.
816 if (mt_state->sgm != -1 &&
817 (mt_state->sgm == old->sgm ||
818 old->sgm == -1 || mt_state->agm == old->sgm))
819 synaptics_report_slot(dev, 0, sgm);
821 synaptics_report_slot(dev, 0, NULL);
824 * If the finger slot contained in AGM is valid, and either
825 * hasn't changed, or is new, then report AGM in MTB slot 1.
826 * Otherwise, empty MTB slot 1.
828 * However, in the case where the AGM is new, make sure that
829 * that it is either the same as the old SGM, or there was no
832 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
833 * the new AGM will keep the old SGM's tracking ID, which can
834 * cause apparent drumroll. This happens if in the following
835 * valid finger sequence:
837 * Action SGM AGM (MTB slot:Contact)
838 * 1. Touch contact 0 (0:0)
839 * 2. Touch contact 1 (0:0, 1:1)
840 * 3. Lift contact 0 (1:1)
841 * 4. Touch contacts 2,3 (0:2, 1:3)
843 * In step 4, contact 3, in AGM must not be given the same
844 * tracking ID as contact 1 had in step 3. To avoid this,
845 * the first agm with contact 3 is dropped and slot 1 is
846 * invalidated (tracking ID = -1).
848 if (mt_state->agm != -1 &&
849 (mt_state->agm == old->agm ||
851 (old->sgm == -1 || mt_state->agm == old->sgm))))
852 synaptics_report_slot(dev, 1, agm);
854 synaptics_report_slot(dev, 1, NULL);
858 /* Don't use active slot count to generate BTN_TOOL events. */
859 input_mt_report_pointer_emulation(dev, false);
861 /* Send the number of fingers reported by touchpad itself. */
862 input_mt_report_finger_count(dev, mt_state->count);
864 synaptics_report_buttons(psmouse, sgm);
869 /* Handle case where mt_state->count = 0 */
870 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
871 struct synaptics_mt_state *mt_state)
873 synaptics_mt_state_set(mt_state, 0, -1, -1);
874 priv->mt_state_lost = false;
877 /* Handle case where mt_state->count = 1 */
878 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
879 struct synaptics_mt_state *mt_state)
881 struct synaptics_hw_state *agm = &priv->agm;
882 struct synaptics_mt_state *old = &priv->mt_state;
885 * If the last AGM was (0,0,0), and there is only one finger left,
886 * then we absolutely know that SGM contains slot 0, and all other
887 * fingers have been removed.
889 if (priv->agm_pending && agm->z == 0) {
890 synaptics_mt_state_set(mt_state, 1, 0, -1);
891 priv->mt_state_lost = false;
895 switch (old->count) {
897 synaptics_mt_state_set(mt_state, 1, 0, -1);
901 * If mt_state_lost, then the previous transition was 3->1,
902 * and SGM now contains either slot 0 or 1, but we don't know
903 * which. So, we just assume that the SGM now contains slot 1.
905 * If pending AGM and either:
906 * (a) the previous SGM slot contains slot 0, or
907 * (b) there was no SGM slot
908 * then, the SGM now contains slot 1
910 * Case (a) happens with very rapid "drum roll" gestures, where
911 * slot 0 finger is lifted and a new slot 1 finger touches
912 * within one reporting interval.
914 * Case (b) happens if initially two or more fingers tap
915 * briefly, and all but one lift before the end of the first
916 * reporting interval.
918 * (In both these cases, slot 0 will becomes empty, so SGM
919 * contains slot 1 with the new finger)
921 * Else, if there was no previous SGM, it now contains slot 0.
923 * Otherwise, SGM still contains the same slot.
925 if (priv->mt_state_lost ||
926 (priv->agm_pending && old->sgm <= 0))
927 synaptics_mt_state_set(mt_state, 1, 1, -1);
928 else if (old->sgm == -1)
929 synaptics_mt_state_set(mt_state, 1, 0, -1);
933 * If mt_state_lost, we don't know which finger SGM contains.
935 * So, report 1 finger, but with both slots empty.
936 * We will use slot 1 on subsequent 1->1
938 if (priv->mt_state_lost) {
939 synaptics_mt_state_set(mt_state, 1, -1, -1);
943 * Since the last AGM was NOT (0,0,0), it was the finger in
944 * slot 0 that has been removed.
945 * So, SGM now contains previous AGM's slot, and AGM is now
948 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
952 * Since last AGM was not (0,0,0), we don't know which finger
955 * So, report 1 finger, but with both slots empty.
956 * We will use slot 1 on subsequent 1->1
958 synaptics_mt_state_set(mt_state, 1, -1, -1);
959 priv->mt_state_lost = true;
963 /* mt_state was updated by AGM-CONTACT packet */
968 /* Handle case where mt_state->count = 2 */
969 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
970 struct synaptics_mt_state *mt_state)
972 struct synaptics_mt_state *old = &priv->mt_state;
974 switch (old->count) {
976 synaptics_mt_state_set(mt_state, 2, 0, 1);
980 * If previous SGM contained slot 1 or higher, SGM now contains
981 * slot 0 (the newly touching finger) and AGM contains SGM's
984 * Otherwise, SGM still contains slot 0 and AGM now contains
988 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
990 synaptics_mt_state_set(mt_state, 2, 0, 1);
994 * If mt_state_lost, SGM now contains either finger 1 or 2, but
995 * we don't know which.
996 * So, we just assume that the SGM contains slot 0 and AGM 1.
998 if (priv->mt_state_lost)
999 synaptics_mt_state_set(mt_state, 2, 0, 1);
1001 * Otherwise, use the same mt_state, since it either hasn't
1002 * changed, or was updated by a recently received AGM-CONTACT
1008 * 3->2 transitions have two unsolvable problems:
1009 * 1) no indication is given which finger was removed
1010 * 2) no way to tell if agm packet was for finger 3
1011 * before 3->2, or finger 2 after 3->2.
1013 * So, report 2 fingers, but empty all slots.
1014 * We will guess slots [0,1] on subsequent 2->2.
1016 synaptics_mt_state_set(mt_state, 2, -1, -1);
1017 priv->mt_state_lost = true;
1021 /* mt_state was updated by AGM-CONTACT packet */
1026 /* Handle case where mt_state->count = 3 */
1027 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1028 struct synaptics_mt_state *mt_state)
1030 struct synaptics_mt_state *old = &priv->mt_state;
1032 switch (old->count) {
1034 synaptics_mt_state_set(mt_state, 3, 0, 2);
1038 * If previous SGM contained slot 2 or higher, SGM now contains
1039 * slot 0 (one of the newly touching fingers) and AGM contains
1040 * SGM's previous slot.
1042 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1045 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1047 synaptics_mt_state_set(mt_state, 3, 0, 2);
1051 * If the AGM previously contained slot 3 or higher, then the
1052 * newly touching finger is in the lowest available slot.
1054 * If SGM was previously 1 or higher, then the new SGM is
1055 * now slot 0 (with a new finger), otherwise, the new finger
1056 * is now in a hidden slot between 0 and AGM's slot.
1058 * In all such cases, the SGM now contains slot 0, and the AGM
1059 * continues to contain the same slot as before.
1061 if (old->agm >= 3) {
1062 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1067 * After some 3->1 and all 3->2 transitions, we lose track
1068 * of which slot is reported by SGM and AGM.
1070 * For 2->3 in this state, report 3 fingers, but empty all
1071 * slots, and we will guess (0,2) on a subsequent 0->3.
1073 * To userspace, the resulting transition will look like:
1074 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1076 if (priv->mt_state_lost) {
1077 synaptics_mt_state_set(mt_state, 3, -1, -1);
1082 * If the (SGM,AGM) really previously contained slots (0, 1),
1083 * then we cannot know what slot was just reported by the AGM,
1084 * because the 2->3 transition can occur either before or after
1085 * the AGM packet. Thus, this most recent AGM could contain
1086 * either the same old slot 1 or the new slot 2.
1087 * Subsequent AGMs will be reporting slot 2.
1089 * To userspace, the resulting transition will look like:
1090 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1092 synaptics_mt_state_set(mt_state, 3, 0, -1);
1096 * If, for whatever reason, the previous agm was invalid,
1097 * Assume SGM now contains slot 0, AGM now contains slot 2.
1100 synaptics_mt_state_set(mt_state, 3, 0, 2);
1102 * mt_state either hasn't changed, or was updated by a recently
1103 * received AGM-CONTACT packet.
1109 /* mt_state was updated by AGM-CONTACT packet */
1114 /* Handle case where mt_state->count = 4, or = 5 */
1115 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1116 struct synaptics_mt_state *mt_state)
1118 /* mt_state was updated correctly by AGM-CONTACT packet */
1119 priv->mt_state_lost = false;
1122 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1123 struct synaptics_hw_state *sgm)
1125 struct synaptics_data *priv = psmouse->private;
1126 struct synaptics_hw_state *agm = &priv->agm;
1127 struct synaptics_mt_state mt_state;
1129 /* Initialize using current mt_state (as updated by last agm) */
1130 mt_state = agm->mt_state;
1133 * Update mt_state using the new finger count and current mt_state.
1136 synaptics_image_sensor_0f(priv, &mt_state);
1137 else if (sgm->w >= 4)
1138 synaptics_image_sensor_1f(priv, &mt_state);
1139 else if (sgm->w == 0)
1140 synaptics_image_sensor_2f(priv, &mt_state);
1141 else if (sgm->w == 1 && mt_state.count <= 3)
1142 synaptics_image_sensor_3f(priv, &mt_state);
1144 synaptics_image_sensor_45f(priv, &mt_state);
1146 /* Send resulting input events to user space */
1147 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1149 /* Store updated mt_state */
1150 priv->mt_state = agm->mt_state = mt_state;
1151 priv->agm_pending = false;
1155 * called for each full received packet from the touchpad
1157 static void synaptics_process_packet(struct psmouse *psmouse)
1159 struct input_dev *dev = psmouse->dev;
1160 struct synaptics_data *priv = psmouse->private;
1161 struct synaptics_hw_state hw;
1165 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1168 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1169 synaptics_image_sensor_process(psmouse, &hw);
1174 priv->scroll += hw.scroll;
1176 while (priv->scroll >= 4) {
1177 input_report_key(dev, BTN_BACK, !hw.down);
1179 input_report_key(dev, BTN_BACK, hw.down);
1183 while (priv->scroll <= -4) {
1184 input_report_key(dev, BTN_FORWARD, !hw.up);
1186 input_report_key(dev, BTN_FORWARD, hw.up);
1193 if (hw.z > 0 && hw.x > 1) {
1196 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1199 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1200 num_fingers = hw.w + 2;
1203 if (SYN_MODEL_PEN(priv->model_id))
1204 ; /* Nothing, treat a pen as a single finger */
1207 if (SYN_CAP_PALMDETECT(priv->capabilities))
1208 finger_width = hw.w;
1217 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1218 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1222 * BTN_TOUCH has to be first as mousedev relies on it when doing
1223 * absolute -> relative conversion
1225 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1226 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1228 if (num_fingers > 0) {
1229 input_report_abs(dev, ABS_X, hw.x);
1230 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1232 input_report_abs(dev, ABS_PRESSURE, hw.z);
1234 if (SYN_CAP_PALMDETECT(priv->capabilities))
1235 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1237 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1238 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1239 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1240 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1243 synaptics_report_buttons(psmouse, &hw);
1248 static int synaptics_validate_byte(struct psmouse *psmouse,
1249 int idx, unsigned char pkt_type)
1251 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1252 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1253 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1254 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1255 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1256 const char *packet = psmouse->packet;
1258 if (idx < 0 || idx > 4)
1264 case SYN_NEWABS_RELAXED:
1265 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1267 case SYN_NEWABS_STRICT:
1268 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1271 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1274 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1279 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1283 for (i = 0; i < 5; i++)
1284 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1285 psmouse_info(psmouse, "using relaxed packet validation\n");
1286 return SYN_NEWABS_RELAXED;
1289 return SYN_NEWABS_STRICT;
1292 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1294 struct synaptics_data *priv = psmouse->private;
1296 if (psmouse->pktcnt >= 6) { /* Full packet received */
1297 if (unlikely(priv->pkt_type == SYN_NEWABS))
1298 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1300 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1301 synaptics_is_pt_packet(psmouse->packet)) {
1303 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1305 synaptics_process_packet(psmouse);
1307 return PSMOUSE_FULL_PACKET;
1310 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1311 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1314 /*****************************************************************************
1315 * Driver initialization/cleanup functions
1316 ****************************************************************************/
1317 static void set_abs_position_params(struct input_dev *dev,
1318 struct synaptics_data *priv, int x_code,
1321 int x_min = priv->x_min ?: XMIN_NOMINAL;
1322 int x_max = priv->x_max ?: XMAX_NOMINAL;
1323 int y_min = priv->y_min ?: YMIN_NOMINAL;
1324 int y_max = priv->y_max ?: YMAX_NOMINAL;
1325 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1326 SYN_REDUCED_FILTER_FUZZ : 0;
1328 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1329 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1330 input_abs_set_res(dev, x_code, priv->x_res);
1331 input_abs_set_res(dev, y_code, priv->y_res);
1334 static void set_input_params(struct psmouse *psmouse,
1335 struct synaptics_data *priv)
1337 struct input_dev *dev = psmouse->dev;
1340 /* Things that apply to both modes */
1341 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1342 __set_bit(EV_KEY, dev->evbit);
1343 __set_bit(BTN_LEFT, dev->keybit);
1344 __set_bit(BTN_RIGHT, dev->keybit);
1346 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1347 __set_bit(BTN_MIDDLE, dev->keybit);
1349 if (!priv->absolute_mode) {
1351 __set_bit(EV_REL, dev->evbit);
1352 __set_bit(REL_X, dev->relbit);
1353 __set_bit(REL_Y, dev->relbit);
1358 __set_bit(EV_ABS, dev->evbit);
1359 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1360 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1362 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1363 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1365 /* Image sensors can report per-contact pressure */
1366 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1367 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1369 /* Image sensors can signal 4 and 5 finger clicks */
1370 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1371 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1372 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1373 /* Non-image sensors with AGM use semi-mt */
1374 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1375 input_mt_init_slots(dev, 2, 0);
1376 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1380 if (SYN_CAP_PALMDETECT(priv->capabilities))
1381 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1383 __set_bit(BTN_TOUCH, dev->keybit);
1384 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1386 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1387 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1388 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1391 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1392 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1393 __set_bit(BTN_FORWARD, dev->keybit);
1394 __set_bit(BTN_BACK, dev->keybit);
1397 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1398 __set_bit(BTN_0 + i, dev->keybit);
1400 __clear_bit(EV_REL, dev->evbit);
1401 __clear_bit(REL_X, dev->relbit);
1402 __clear_bit(REL_Y, dev->relbit);
1404 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1405 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1406 if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1407 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1408 /* Clickpads report only left button */
1409 __clear_bit(BTN_RIGHT, dev->keybit);
1410 __clear_bit(BTN_MIDDLE, dev->keybit);
1414 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1415 void *data, char *buf)
1417 struct synaptics_data *priv = psmouse->private;
1419 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1422 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1423 void *data, const char *buf,
1426 struct synaptics_data *priv = psmouse->private;
1430 err = kstrtouint(buf, 10, &value);
1437 if (value == priv->disable_gesture)
1440 priv->disable_gesture = value;
1442 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1444 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1446 if (synaptics_mode_cmd(psmouse, priv->mode))
1452 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1453 synaptics_show_disable_gesture,
1454 synaptics_set_disable_gesture);
1456 static void synaptics_disconnect(struct psmouse *psmouse)
1458 struct synaptics_data *priv = psmouse->private;
1460 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1461 device_remove_file(&psmouse->ps2dev.serio->dev,
1462 &psmouse_attr_disable_gesture.dattr);
1464 synaptics_reset(psmouse);
1466 psmouse->private = NULL;
1469 static int synaptics_reconnect(struct psmouse *psmouse)
1471 struct synaptics_data *priv = psmouse->private;
1472 struct synaptics_data old_priv = *priv;
1473 unsigned char param[2];
1478 psmouse_reset(psmouse);
1481 * On some boxes, right after resuming, the touchpad
1482 * needs some time to finish initializing (I assume
1483 * it needs time to calibrate) and start responding
1484 * to Synaptics-specific queries, so let's wait a
1489 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1490 error = synaptics_detect(psmouse, 0);
1491 } while (error && ++retry < 3);
1497 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1499 if (synaptics_query_hardware(psmouse)) {
1500 psmouse_err(psmouse, "Unable to query device.\n");
1504 if (synaptics_set_mode(psmouse)) {
1505 psmouse_err(psmouse, "Unable to initialize device.\n");
1509 if (old_priv.identity != priv->identity ||
1510 old_priv.model_id != priv->model_id ||
1511 old_priv.capabilities != priv->capabilities ||
1512 old_priv.ext_cap != priv->ext_cap) {
1513 psmouse_err(psmouse,
1514 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1515 old_priv.identity, priv->identity,
1516 old_priv.model_id, priv->model_id,
1517 old_priv.capabilities, priv->capabilities,
1518 old_priv.ext_cap, priv->ext_cap);
1525 static bool impaired_toshiba_kbc;
1527 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1528 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1530 /* Toshiba Satellite */
1532 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1533 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1537 /* Toshiba Dynabook */
1539 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1540 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1544 /* Toshiba Portege M300 */
1546 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1547 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1552 /* Toshiba Portege M300 */
1554 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1555 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1556 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1564 static bool broken_olpc_ec;
1566 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1567 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1569 /* OLPC XO-1 or XO-1.5 */
1571 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1572 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1579 void __init synaptics_module_init(void)
1581 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1582 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1585 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1587 struct synaptics_data *priv;
1591 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1592 * packet spew overloads the EC such that key presses on the keyboard
1593 * are missed. Given that, don't even attempt to use Absolute mode.
1594 * Relative mode seems to work just fine.
1596 if (absolute_mode && broken_olpc_ec) {
1597 psmouse_info(psmouse,
1598 "OLPC XO detected, not enabling Synaptics protocol.\n");
1602 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1606 psmouse_reset(psmouse);
1608 if (synaptics_query_hardware(psmouse)) {
1609 psmouse_err(psmouse, "Unable to query device.\n");
1613 priv->absolute_mode = absolute_mode;
1614 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1615 priv->disable_gesture = true;
1617 if (synaptics_set_mode(psmouse)) {
1618 psmouse_err(psmouse, "Unable to initialize device.\n");
1622 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1624 psmouse_info(psmouse,
1625 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1626 SYN_ID_MODEL(priv->identity),
1627 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1629 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1630 priv->board_id, priv->firmware_id);
1632 set_input_params(psmouse, priv);
1635 * Encode touchpad model so that it can be used to set
1636 * input device->id.version and be visible to userspace.
1637 * Because version is __u16 we have to drop something.
1638 * Hardware info bits seem to be good candidates as they
1639 * are documented to be for Synaptics corp. internal use.
1641 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1642 (priv->model_id & 0x000000ff);
1644 if (absolute_mode) {
1645 psmouse->protocol_handler = synaptics_process_byte;
1646 psmouse->pktsize = 6;
1648 /* Relative mode follows standard PS/2 mouse protocol */
1649 psmouse->protocol_handler = psmouse_process_byte;
1650 psmouse->pktsize = 3;
1653 psmouse->set_rate = synaptics_set_rate;
1654 psmouse->disconnect = synaptics_disconnect;
1655 psmouse->reconnect = synaptics_reconnect;
1656 psmouse->cleanup = synaptics_reset;
1657 /* Synaptics can usually stay in sync without extra help */
1658 psmouse->resync_time = 0;
1660 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1661 synaptics_pt_create(psmouse);
1664 * Toshiba's KBC seems to have trouble handling data from
1665 * Synaptics at full rate. Switch to a lower rate (roughly
1666 * the same rate as a standard PS/2 mouse).
1668 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1669 psmouse_info(psmouse,
1670 "Toshiba %s detected, limiting rate to 40pps.\n",
1671 dmi_get_system_info(DMI_PRODUCT_NAME));
1675 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1676 err = device_create_file(&psmouse->ps2dev.serio->dev,
1677 &psmouse_attr_disable_gesture.dattr);
1679 psmouse_err(psmouse,
1680 "Failed to create disable_gesture attribute (%d)",
1693 int synaptics_init(struct psmouse *psmouse)
1695 return __synaptics_init(psmouse, true);
1698 int synaptics_init_relative(struct psmouse *psmouse)
1700 return __synaptics_init(psmouse, false);
1703 bool synaptics_supported(void)
1708 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1710 void __init synaptics_module_init(void)
1714 int synaptics_init(struct psmouse *psmouse)
1719 bool synaptics_supported(void)
1724 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */