2 * Synaptics TouchPad PS/2 mouse driver
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
23 * Trademarks are the property of their respective owners.
26 #include <linux/module.h>
27 #include <linux/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/slab.h>
34 #include "synaptics.h"
37 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
38 * section 2.3.2, which says that they should be valid regardless of the
39 * actual size of the sensor.
40 * Note that newer firmware allows querying device for maximum useable
47 #define XMIN_NOMINAL 1472
48 #define XMAX_NOMINAL 5472
49 #define YMIN_NOMINAL 1408
50 #define YMAX_NOMINAL 4448
52 /* Size in bits of absolute position values reported by the hardware */
53 #define ABS_POS_BITS 13
56 * These values should represent the absolute maximum value that will
57 * be reported for a positive position value. Some Synaptics firmware
58 * uses this value to indicate a finger near the edge of the touchpad
59 * whose precise position cannot be determined.
61 * At least one touchpad is known to report positions in excess of this
62 * value which are actually negative values truncated to the 13-bit
63 * reporting range. These values have never been observed to be lower
64 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
65 * negative and any other value as positive.
67 #define X_MAX_POSITIVE 8176
68 #define Y_MAX_POSITIVE 8176
70 /*****************************************************************************
71 * Stuff we need even when we do not want native Synaptics support
72 ****************************************************************************/
75 * Set the synaptics touchpad mode byte by special commands
77 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
79 unsigned char param[1];
81 if (psmouse_sliced_command(psmouse, mode))
83 param[0] = SYN_PS_SET_MODE2;
84 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
89 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
91 struct ps2dev *ps2dev = &psmouse->ps2dev;
92 unsigned char param[4];
96 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
97 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
98 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
100 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
102 if (param[1] != 0x47)
105 if (set_properties) {
106 psmouse->vendor = "Synaptics";
107 psmouse->name = "TouchPad";
113 void synaptics_reset(struct psmouse *psmouse)
115 /* reset touchpad back to relative mode, gestures enabled */
116 synaptics_mode_cmd(psmouse, 0);
119 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
121 static bool cr48_profile_sensor;
123 struct min_max_quirk {
124 const char * const *pnp_ids;
125 int x_min, x_max, y_min, y_max;
128 static const struct min_max_quirk min_max_pnpid_table[] = {
130 (const char * const []){"LEN0033", NULL},
131 1024, 5052, 2258, 4832
134 (const char * const []){"LEN0035", "LEN0042", NULL},
135 1232, 5710, 1156, 4696
138 (const char * const []){"LEN0034", "LEN0036", "LEN2002",
140 1024, 5112, 2024, 4832
143 (const char * const []){"LEN2001", NULL},
144 1024, 5022, 2508, 4832
149 /* This list has been kindly provided by Synaptics. */
150 static const char * const topbuttonpad_pnp_ids[] = {
160 "LEN0033", /* Helix */
161 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
162 "LEN0035", /* X240 */
163 "LEN0036", /* T440 */
167 "LEN0042", /* Yoga */
174 "LEN2001", /* Edge E431 */
175 "LEN2002", /* Edge E531 */
177 "LEN2004", /* L440 */
188 static bool matches_pnp_id(struct psmouse *psmouse, const char * const ids[])
192 if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4))
193 for (i = 0; ids[i]; i++)
194 if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i]))
200 /*****************************************************************************
201 * Synaptics communications functions
202 ****************************************************************************/
205 * Synaptics touchpads report the y coordinate from bottom to top, which is
206 * opposite from what userspace expects.
207 * This function is used to invert y before reporting.
209 static int synaptics_invert_y(int y)
211 return YMAX_NOMINAL + YMIN_NOMINAL - y;
215 * Send a command to the synpatics touchpad by special commands
217 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
219 if (psmouse_sliced_command(psmouse, c))
221 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
227 * Read the model-id bytes from the touchpad
228 * see also SYN_MODEL_* macros
230 static int synaptics_model_id(struct psmouse *psmouse)
232 struct synaptics_data *priv = psmouse->private;
235 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
237 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
242 * Read the board id from the touchpad
243 * The board id is encoded in the "QUERY MODES" response
245 static int synaptics_board_id(struct psmouse *psmouse)
247 struct synaptics_data *priv = psmouse->private;
248 unsigned char bid[3];
250 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
252 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
257 * Read the firmware id from the touchpad
259 static int synaptics_firmware_id(struct psmouse *psmouse)
261 struct synaptics_data *priv = psmouse->private;
262 unsigned char fwid[3];
264 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
266 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
271 * Read the capability-bits from the touchpad
272 * see also the SYN_CAP_* macros
274 static int synaptics_capability(struct psmouse *psmouse)
276 struct synaptics_data *priv = psmouse->private;
277 unsigned char cap[3];
279 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
281 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
282 priv->ext_cap = priv->ext_cap_0c = 0;
285 * Older firmwares had submodel ID fixed to 0x47
287 if (SYN_ID_FULL(priv->identity) < 0x705 &&
288 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
293 * Unless capExtended is set the rest of the flags should be ignored
295 if (!SYN_CAP_EXTENDED(priv->capabilities))
296 priv->capabilities = 0;
298 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
299 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
300 psmouse_warn(psmouse,
301 "device claims to have extended capabilities, but I'm not able to read them.\n");
303 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
306 * if nExtBtn is greater than 8 it should be considered
307 * invalid and treated as 0
309 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
310 priv->ext_cap &= 0xff0fff;
314 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
315 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
316 psmouse_warn(psmouse,
317 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
319 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
328 * See also the SYN_ID_* macros
330 static int synaptics_identify(struct psmouse *psmouse)
332 struct synaptics_data *priv = psmouse->private;
335 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
337 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
338 if (SYN_ID_IS_SYNAPTICS(priv->identity))
344 * Read touchpad resolution and maximum reported coordinates
345 * Resolution is left zero if touchpad does not support the query
348 static int synaptics_resolution(struct psmouse *psmouse)
350 struct synaptics_data *priv = psmouse->private;
351 unsigned char resp[3];
354 if (SYN_ID_MAJOR(priv->identity) < 4)
357 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
358 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
359 priv->x_res = resp[0]; /* x resolution in units/mm */
360 priv->y_res = resp[2]; /* y resolution in units/mm */
364 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
365 if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
366 priv->x_min = min_max_pnpid_table[i].x_min;
367 priv->x_max = min_max_pnpid_table[i].x_max;
368 priv->y_min = min_max_pnpid_table[i].y_min;
369 priv->y_max = min_max_pnpid_table[i].y_max;
374 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
375 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
376 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
377 psmouse_warn(psmouse,
378 "device claims to have max coordinates query, but I'm not able to read it.\n");
380 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
381 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
385 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
386 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
387 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
388 psmouse_warn(psmouse,
389 "device claims to have min coordinates query, but I'm not able to read it.\n");
391 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
392 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
399 static int synaptics_query_hardware(struct psmouse *psmouse)
401 if (synaptics_identify(psmouse))
403 if (synaptics_model_id(psmouse))
405 if (synaptics_firmware_id(psmouse))
407 if (synaptics_board_id(psmouse))
409 if (synaptics_capability(psmouse))
411 if (synaptics_resolution(psmouse))
417 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
419 static unsigned char param = 0xc8;
420 struct synaptics_data *priv = psmouse->private;
422 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
423 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
426 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
429 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
432 /* Advanced gesture mode also sends multi finger data */
433 priv->capabilities |= BIT(1);
438 static int synaptics_set_mode(struct psmouse *psmouse)
440 struct synaptics_data *priv = psmouse->private;
443 if (priv->absolute_mode)
444 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
445 if (priv->disable_gesture)
446 priv->mode |= SYN_BIT_DISABLE_GESTURE;
447 if (psmouse->rate >= 80)
448 priv->mode |= SYN_BIT_HIGH_RATE;
449 if (SYN_CAP_EXTENDED(priv->capabilities))
450 priv->mode |= SYN_BIT_W_MODE;
452 if (synaptics_mode_cmd(psmouse, priv->mode))
455 if (priv->absolute_mode &&
456 synaptics_set_advanced_gesture_mode(psmouse)) {
457 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
464 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
466 struct synaptics_data *priv = psmouse->private;
469 priv->mode |= SYN_BIT_HIGH_RATE;
472 priv->mode &= ~SYN_BIT_HIGH_RATE;
476 synaptics_mode_cmd(psmouse, priv->mode);
479 /*****************************************************************************
480 * Synaptics pass-through PS/2 port support
481 ****************************************************************************/
482 static int synaptics_pt_write(struct serio *serio, unsigned char c)
484 struct psmouse *parent = serio_get_drvdata(serio->parent);
485 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
487 if (psmouse_sliced_command(parent, c))
489 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
494 static int synaptics_pt_start(struct serio *serio)
496 struct psmouse *parent = serio_get_drvdata(serio->parent);
497 struct synaptics_data *priv = parent->private;
499 serio_pause_rx(parent->ps2dev.serio);
500 priv->pt_port = serio;
501 serio_continue_rx(parent->ps2dev.serio);
506 static void synaptics_pt_stop(struct serio *serio)
508 struct psmouse *parent = serio_get_drvdata(serio->parent);
509 struct synaptics_data *priv = parent->private;
511 serio_pause_rx(parent->ps2dev.serio);
512 priv->pt_port = NULL;
513 serio_continue_rx(parent->ps2dev.serio);
516 static int synaptics_is_pt_packet(unsigned char *buf)
518 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
521 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
523 struct psmouse *child = serio_get_drvdata(ptport);
525 if (child && child->state == PSMOUSE_ACTIVATED) {
526 serio_interrupt(ptport, packet[1], 0);
527 serio_interrupt(ptport, packet[4], 0);
528 serio_interrupt(ptport, packet[5], 0);
529 if (child->pktsize == 4)
530 serio_interrupt(ptport, packet[2], 0);
532 serio_interrupt(ptport, packet[1], 0);
535 static void synaptics_pt_activate(struct psmouse *psmouse)
537 struct synaptics_data *priv = psmouse->private;
538 struct psmouse *child = serio_get_drvdata(priv->pt_port);
540 /* adjust the touchpad to child's choice of protocol */
542 if (child->pktsize == 4)
543 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
545 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
547 if (synaptics_mode_cmd(psmouse, priv->mode))
548 psmouse_warn(psmouse,
549 "failed to switch guest protocol\n");
553 static void synaptics_pt_create(struct psmouse *psmouse)
557 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
560 "not enough memory for pass-through port\n");
564 serio->id.type = SERIO_PS_PSTHRU;
565 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
566 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
567 serio->write = synaptics_pt_write;
568 serio->start = synaptics_pt_start;
569 serio->stop = synaptics_pt_stop;
570 serio->parent = psmouse->ps2dev.serio;
572 psmouse->pt_activate = synaptics_pt_activate;
574 psmouse_info(psmouse, "serio: %s port at %s\n",
575 serio->name, psmouse->phys);
576 serio_register_port(serio);
579 /*****************************************************************************
580 * Functions to interpret the absolute mode packets
581 ****************************************************************************/
583 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
586 state->count = count;
591 static void synaptics_parse_agm(const unsigned char buf[],
592 struct synaptics_data *priv,
593 struct synaptics_hw_state *hw)
595 struct synaptics_hw_state *agm = &priv->agm;
598 agm_packet_type = (buf[5] & 0x30) >> 4;
599 switch (agm_packet_type) {
601 /* Gesture packet: (x, y, z) half resolution */
603 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
604 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
605 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
609 /* AGM-CONTACT packet: (count, sgm, agm) */
610 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
617 /* Record that at least one AGM has been received since last SGM */
618 priv->agm_pending = true;
621 static int synaptics_parse_hw_state(const unsigned char buf[],
622 struct synaptics_data *priv,
623 struct synaptics_hw_state *hw)
625 memset(hw, 0, sizeof(struct synaptics_hw_state));
627 if (SYN_MODEL_NEWABS(priv->model_id)) {
628 hw->w = (((buf[0] & 0x30) >> 2) |
629 ((buf[0] & 0x04) >> 1) |
630 ((buf[3] & 0x04) >> 2));
632 hw->left = (buf[0] & 0x01) ? 1 : 0;
633 hw->right = (buf[0] & 0x02) ? 1 : 0;
635 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
637 * Clickpad's button is transmitted as middle button,
638 * however, since it is primary button, we will report
641 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
643 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
644 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
646 hw->scroll = (signed char)(buf[1]);
649 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
650 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
651 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
654 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
655 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
657 synaptics_parse_agm(buf, priv, hw);
661 hw->x = (((buf[3] & 0x10) << 8) |
662 ((buf[1] & 0x0f) << 8) |
664 hw->y = (((buf[3] & 0x20) << 7) |
665 ((buf[1] & 0xf0) << 4) |
669 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
670 ((buf[0] ^ buf[3]) & 0x02)) {
671 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
674 * if nExtBtn is greater than 8 it should be
675 * considered invalid and treated as 0
679 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
680 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
682 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
683 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
685 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
686 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
688 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
689 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
693 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
694 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
696 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
697 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
699 hw->left = (buf[0] & 0x01) ? 1 : 0;
700 hw->right = (buf[0] & 0x02) ? 1 : 0;
704 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
705 * is used by some firmware to indicate a finger at the edge of
706 * the touchpad whose precise position cannot be determined, so
707 * convert these values to the maximum axis value.
709 if (hw->x > X_MAX_POSITIVE)
710 hw->x -= 1 << ABS_POS_BITS;
711 else if (hw->x == X_MAX_POSITIVE)
714 if (hw->y > Y_MAX_POSITIVE)
715 hw->y -= 1 << ABS_POS_BITS;
716 else if (hw->y == Y_MAX_POSITIVE)
722 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
723 bool active, int x, int y)
725 input_mt_slot(dev, slot);
726 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
728 input_report_abs(dev, ABS_MT_POSITION_X, x);
729 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
733 static void synaptics_report_semi_mt_data(struct input_dev *dev,
734 const struct synaptics_hw_state *a,
735 const struct synaptics_hw_state *b,
738 if (num_fingers >= 2) {
739 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
741 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
743 } else if (num_fingers == 1) {
744 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
745 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
747 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
748 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
752 static void synaptics_report_buttons(struct psmouse *psmouse,
753 const struct synaptics_hw_state *hw)
755 struct input_dev *dev = psmouse->dev;
756 struct synaptics_data *priv = psmouse->private;
759 input_report_key(dev, BTN_LEFT, hw->left);
760 input_report_key(dev, BTN_RIGHT, hw->right);
762 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
763 input_report_key(dev, BTN_MIDDLE, hw->middle);
765 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
766 input_report_key(dev, BTN_FORWARD, hw->up);
767 input_report_key(dev, BTN_BACK, hw->down);
770 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
771 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
774 static void synaptics_report_slot(struct input_dev *dev, int slot,
775 const struct synaptics_hw_state *hw)
777 input_mt_slot(dev, slot);
778 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
782 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
783 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
784 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
787 static void synaptics_report_mt_data(struct psmouse *psmouse,
788 struct synaptics_mt_state *mt_state,
789 const struct synaptics_hw_state *sgm)
791 struct input_dev *dev = psmouse->dev;
792 struct synaptics_data *priv = psmouse->private;
793 struct synaptics_hw_state *agm = &priv->agm;
794 struct synaptics_mt_state *old = &priv->mt_state;
796 switch (mt_state->count) {
798 synaptics_report_slot(dev, 0, NULL);
799 synaptics_report_slot(dev, 1, NULL);
802 if (mt_state->sgm == -1) {
803 synaptics_report_slot(dev, 0, NULL);
804 synaptics_report_slot(dev, 1, NULL);
805 } else if (mt_state->sgm == 0) {
806 synaptics_report_slot(dev, 0, sgm);
807 synaptics_report_slot(dev, 1, NULL);
809 synaptics_report_slot(dev, 0, NULL);
810 synaptics_report_slot(dev, 1, sgm);
815 * If the finger slot contained in SGM is valid, and either
816 * hasn't changed, or is new, or the old SGM has now moved to
817 * AGM, then report SGM in MTB slot 0.
818 * Otherwise, empty MTB slot 0.
820 if (mt_state->sgm != -1 &&
821 (mt_state->sgm == old->sgm ||
822 old->sgm == -1 || mt_state->agm == old->sgm))
823 synaptics_report_slot(dev, 0, sgm);
825 synaptics_report_slot(dev, 0, NULL);
828 * If the finger slot contained in AGM is valid, and either
829 * hasn't changed, or is new, then report AGM in MTB slot 1.
830 * Otherwise, empty MTB slot 1.
832 * However, in the case where the AGM is new, make sure that
833 * that it is either the same as the old SGM, or there was no
836 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
837 * the new AGM will keep the old SGM's tracking ID, which can
838 * cause apparent drumroll. This happens if in the following
839 * valid finger sequence:
841 * Action SGM AGM (MTB slot:Contact)
842 * 1. Touch contact 0 (0:0)
843 * 2. Touch contact 1 (0:0, 1:1)
844 * 3. Lift contact 0 (1:1)
845 * 4. Touch contacts 2,3 (0:2, 1:3)
847 * In step 4, contact 3, in AGM must not be given the same
848 * tracking ID as contact 1 had in step 3. To avoid this,
849 * the first agm with contact 3 is dropped and slot 1 is
850 * invalidated (tracking ID = -1).
852 if (mt_state->agm != -1 &&
853 (mt_state->agm == old->agm ||
855 (old->sgm == -1 || mt_state->agm == old->sgm))))
856 synaptics_report_slot(dev, 1, agm);
858 synaptics_report_slot(dev, 1, NULL);
862 /* Don't use active slot count to generate BTN_TOOL events. */
863 input_mt_report_pointer_emulation(dev, false);
865 /* Send the number of fingers reported by touchpad itself. */
866 input_mt_report_finger_count(dev, mt_state->count);
868 synaptics_report_buttons(psmouse, sgm);
873 /* Handle case where mt_state->count = 0 */
874 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
875 struct synaptics_mt_state *mt_state)
877 synaptics_mt_state_set(mt_state, 0, -1, -1);
878 priv->mt_state_lost = false;
881 /* Handle case where mt_state->count = 1 */
882 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
883 struct synaptics_mt_state *mt_state)
885 struct synaptics_hw_state *agm = &priv->agm;
886 struct synaptics_mt_state *old = &priv->mt_state;
889 * If the last AGM was (0,0,0), and there is only one finger left,
890 * then we absolutely know that SGM contains slot 0, and all other
891 * fingers have been removed.
893 if (priv->agm_pending && agm->z == 0) {
894 synaptics_mt_state_set(mt_state, 1, 0, -1);
895 priv->mt_state_lost = false;
899 switch (old->count) {
901 synaptics_mt_state_set(mt_state, 1, 0, -1);
905 * If mt_state_lost, then the previous transition was 3->1,
906 * and SGM now contains either slot 0 or 1, but we don't know
907 * which. So, we just assume that the SGM now contains slot 1.
909 * If pending AGM and either:
910 * (a) the previous SGM slot contains slot 0, or
911 * (b) there was no SGM slot
912 * then, the SGM now contains slot 1
914 * Case (a) happens with very rapid "drum roll" gestures, where
915 * slot 0 finger is lifted and a new slot 1 finger touches
916 * within one reporting interval.
918 * Case (b) happens if initially two or more fingers tap
919 * briefly, and all but one lift before the end of the first
920 * reporting interval.
922 * (In both these cases, slot 0 will becomes empty, so SGM
923 * contains slot 1 with the new finger)
925 * Else, if there was no previous SGM, it now contains slot 0.
927 * Otherwise, SGM still contains the same slot.
929 if (priv->mt_state_lost ||
930 (priv->agm_pending && old->sgm <= 0))
931 synaptics_mt_state_set(mt_state, 1, 1, -1);
932 else if (old->sgm == -1)
933 synaptics_mt_state_set(mt_state, 1, 0, -1);
937 * If mt_state_lost, we don't know which finger SGM contains.
939 * So, report 1 finger, but with both slots empty.
940 * We will use slot 1 on subsequent 1->1
942 if (priv->mt_state_lost) {
943 synaptics_mt_state_set(mt_state, 1, -1, -1);
947 * Since the last AGM was NOT (0,0,0), it was the finger in
948 * slot 0 that has been removed.
949 * So, SGM now contains previous AGM's slot, and AGM is now
952 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
956 * Since last AGM was not (0,0,0), we don't know which finger
959 * So, report 1 finger, but with both slots empty.
960 * We will use slot 1 on subsequent 1->1
962 synaptics_mt_state_set(mt_state, 1, -1, -1);
963 priv->mt_state_lost = true;
967 /* mt_state was updated by AGM-CONTACT packet */
972 /* Handle case where mt_state->count = 2 */
973 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
974 struct synaptics_mt_state *mt_state)
976 struct synaptics_mt_state *old = &priv->mt_state;
978 switch (old->count) {
980 synaptics_mt_state_set(mt_state, 2, 0, 1);
984 * If previous SGM contained slot 1 or higher, SGM now contains
985 * slot 0 (the newly touching finger) and AGM contains SGM's
988 * Otherwise, SGM still contains slot 0 and AGM now contains
992 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
994 synaptics_mt_state_set(mt_state, 2, 0, 1);
998 * If mt_state_lost, SGM now contains either finger 1 or 2, but
999 * we don't know which.
1000 * So, we just assume that the SGM contains slot 0 and AGM 1.
1002 if (priv->mt_state_lost)
1003 synaptics_mt_state_set(mt_state, 2, 0, 1);
1005 * Otherwise, use the same mt_state, since it either hasn't
1006 * changed, or was updated by a recently received AGM-CONTACT
1012 * 3->2 transitions have two unsolvable problems:
1013 * 1) no indication is given which finger was removed
1014 * 2) no way to tell if agm packet was for finger 3
1015 * before 3->2, or finger 2 after 3->2.
1017 * So, report 2 fingers, but empty all slots.
1018 * We will guess slots [0,1] on subsequent 2->2.
1020 synaptics_mt_state_set(mt_state, 2, -1, -1);
1021 priv->mt_state_lost = true;
1025 /* mt_state was updated by AGM-CONTACT packet */
1030 /* Handle case where mt_state->count = 3 */
1031 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1032 struct synaptics_mt_state *mt_state)
1034 struct synaptics_mt_state *old = &priv->mt_state;
1036 switch (old->count) {
1038 synaptics_mt_state_set(mt_state, 3, 0, 2);
1042 * If previous SGM contained slot 2 or higher, SGM now contains
1043 * slot 0 (one of the newly touching fingers) and AGM contains
1044 * SGM's previous slot.
1046 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1049 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1051 synaptics_mt_state_set(mt_state, 3, 0, 2);
1055 * If the AGM previously contained slot 3 or higher, then the
1056 * newly touching finger is in the lowest available slot.
1058 * If SGM was previously 1 or higher, then the new SGM is
1059 * now slot 0 (with a new finger), otherwise, the new finger
1060 * is now in a hidden slot between 0 and AGM's slot.
1062 * In all such cases, the SGM now contains slot 0, and the AGM
1063 * continues to contain the same slot as before.
1065 if (old->agm >= 3) {
1066 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1071 * After some 3->1 and all 3->2 transitions, we lose track
1072 * of which slot is reported by SGM and AGM.
1074 * For 2->3 in this state, report 3 fingers, but empty all
1075 * slots, and we will guess (0,2) on a subsequent 0->3.
1077 * To userspace, the resulting transition will look like:
1078 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1080 if (priv->mt_state_lost) {
1081 synaptics_mt_state_set(mt_state, 3, -1, -1);
1086 * If the (SGM,AGM) really previously contained slots (0, 1),
1087 * then we cannot know what slot was just reported by the AGM,
1088 * because the 2->3 transition can occur either before or after
1089 * the AGM packet. Thus, this most recent AGM could contain
1090 * either the same old slot 1 or the new slot 2.
1091 * Subsequent AGMs will be reporting slot 2.
1093 * To userspace, the resulting transition will look like:
1094 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1096 synaptics_mt_state_set(mt_state, 3, 0, -1);
1100 * If, for whatever reason, the previous agm was invalid,
1101 * Assume SGM now contains slot 0, AGM now contains slot 2.
1104 synaptics_mt_state_set(mt_state, 3, 0, 2);
1106 * mt_state either hasn't changed, or was updated by a recently
1107 * received AGM-CONTACT packet.
1113 /* mt_state was updated by AGM-CONTACT packet */
1118 /* Handle case where mt_state->count = 4, or = 5 */
1119 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1120 struct synaptics_mt_state *mt_state)
1122 /* mt_state was updated correctly by AGM-CONTACT packet */
1123 priv->mt_state_lost = false;
1126 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1127 struct synaptics_hw_state *sgm)
1129 struct synaptics_data *priv = psmouse->private;
1130 struct synaptics_hw_state *agm = &priv->agm;
1131 struct synaptics_mt_state mt_state;
1133 /* Initialize using current mt_state (as updated by last agm) */
1134 mt_state = agm->mt_state;
1137 * Update mt_state using the new finger count and current mt_state.
1140 synaptics_image_sensor_0f(priv, &mt_state);
1141 else if (sgm->w >= 4)
1142 synaptics_image_sensor_1f(priv, &mt_state);
1143 else if (sgm->w == 0)
1144 synaptics_image_sensor_2f(priv, &mt_state);
1145 else if (sgm->w == 1 && mt_state.count <= 3)
1146 synaptics_image_sensor_3f(priv, &mt_state);
1148 synaptics_image_sensor_45f(priv, &mt_state);
1150 /* Send resulting input events to user space */
1151 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1153 /* Store updated mt_state */
1154 priv->mt_state = agm->mt_state = mt_state;
1155 priv->agm_pending = false;
1158 static void synaptics_profile_sensor_process(struct psmouse *psmouse,
1159 struct synaptics_hw_state *sgm,
1162 struct input_dev *dev = psmouse->dev;
1163 struct synaptics_data *priv = psmouse->private;
1164 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
1165 struct input_mt_pos pos[2];
1166 int slot[2], nsemi, i;
1168 nsemi = clamp_val(num_fingers, 0, 2);
1170 for (i = 0; i < nsemi; i++) {
1171 pos[i].x = hw[i]->x;
1172 pos[i].y = synaptics_invert_y(hw[i]->y);
1175 input_mt_assign_slots(dev, slot, pos, nsemi);
1177 for (i = 0; i < nsemi; i++) {
1178 input_mt_slot(dev, slot[i]);
1179 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1180 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1181 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1182 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1185 input_mt_drop_unused(dev);
1186 input_mt_report_pointer_emulation(dev, false);
1187 input_mt_report_finger_count(dev, num_fingers);
1189 synaptics_report_buttons(psmouse, sgm);
1195 * called for each full received packet from the touchpad
1197 static void synaptics_process_packet(struct psmouse *psmouse)
1199 struct input_dev *dev = psmouse->dev;
1200 struct synaptics_data *priv = psmouse->private;
1201 struct synaptics_hw_state hw;
1205 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1208 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1209 synaptics_image_sensor_process(psmouse, &hw);
1214 priv->scroll += hw.scroll;
1216 while (priv->scroll >= 4) {
1217 input_report_key(dev, BTN_BACK, !hw.down);
1219 input_report_key(dev, BTN_BACK, hw.down);
1223 while (priv->scroll <= -4) {
1224 input_report_key(dev, BTN_FORWARD, !hw.up);
1226 input_report_key(dev, BTN_FORWARD, hw.up);
1233 if (hw.z > 0 && hw.x > 1) {
1236 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1239 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1240 num_fingers = hw.w + 2;
1243 if (SYN_MODEL_PEN(priv->model_id))
1244 ; /* Nothing, treat a pen as a single finger */
1247 if (SYN_CAP_PALMDETECT(priv->capabilities))
1248 finger_width = hw.w;
1257 if (cr48_profile_sensor) {
1258 synaptics_profile_sensor_process(psmouse, &hw, num_fingers);
1262 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1263 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1267 * BTN_TOUCH has to be first as mousedev relies on it when doing
1268 * absolute -> relative conversion
1270 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1271 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1273 if (num_fingers > 0) {
1274 input_report_abs(dev, ABS_X, hw.x);
1275 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1277 input_report_abs(dev, ABS_PRESSURE, hw.z);
1279 if (SYN_CAP_PALMDETECT(priv->capabilities))
1280 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1282 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1283 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1284 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1285 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1288 synaptics_report_buttons(psmouse, &hw);
1293 static int synaptics_validate_byte(struct psmouse *psmouse,
1294 int idx, unsigned char pkt_type)
1296 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1297 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1298 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1299 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1300 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1301 const char *packet = psmouse->packet;
1303 if (idx < 0 || idx > 4)
1309 case SYN_NEWABS_RELAXED:
1310 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1312 case SYN_NEWABS_STRICT:
1313 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1316 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1319 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1324 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1328 for (i = 0; i < 5; i++)
1329 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1330 psmouse_info(psmouse, "using relaxed packet validation\n");
1331 return SYN_NEWABS_RELAXED;
1334 return SYN_NEWABS_STRICT;
1337 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1339 struct synaptics_data *priv = psmouse->private;
1341 if (psmouse->pktcnt >= 6) { /* Full packet received */
1342 if (unlikely(priv->pkt_type == SYN_NEWABS))
1343 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1345 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1346 synaptics_is_pt_packet(psmouse->packet)) {
1348 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1350 synaptics_process_packet(psmouse);
1352 return PSMOUSE_FULL_PACKET;
1355 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1356 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1359 /*****************************************************************************
1360 * Driver initialization/cleanup functions
1361 ****************************************************************************/
1362 static void set_abs_position_params(struct input_dev *dev,
1363 struct synaptics_data *priv, int x_code,
1366 int x_min = priv->x_min ?: XMIN_NOMINAL;
1367 int x_max = priv->x_max ?: XMAX_NOMINAL;
1368 int y_min = priv->y_min ?: YMIN_NOMINAL;
1369 int y_max = priv->y_max ?: YMAX_NOMINAL;
1370 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1371 SYN_REDUCED_FILTER_FUZZ : 0;
1373 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1374 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1375 input_abs_set_res(dev, x_code, priv->x_res);
1376 input_abs_set_res(dev, y_code, priv->y_res);
1379 static void set_input_params(struct psmouse *psmouse,
1380 struct synaptics_data *priv)
1382 struct input_dev *dev = psmouse->dev;
1385 /* Things that apply to both modes */
1386 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1387 __set_bit(EV_KEY, dev->evbit);
1388 __set_bit(BTN_LEFT, dev->keybit);
1389 __set_bit(BTN_RIGHT, dev->keybit);
1391 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1392 __set_bit(BTN_MIDDLE, dev->keybit);
1394 if (!priv->absolute_mode) {
1396 __set_bit(EV_REL, dev->evbit);
1397 __set_bit(REL_X, dev->relbit);
1398 __set_bit(REL_Y, dev->relbit);
1403 __set_bit(EV_ABS, dev->evbit);
1404 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1405 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1407 if (cr48_profile_sensor)
1408 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1410 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1411 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1413 /* Image sensors can report per-contact pressure */
1414 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1415 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1417 /* Image sensors can signal 4 and 5 finger clicks */
1418 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1419 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1420 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1421 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1424 * Profile sensor in CR-48 tracks contacts reasonably well,
1425 * other non-image sensors with AGM use semi-mt.
1427 input_mt_init_slots(dev, 2,
1429 (cr48_profile_sensor ?
1430 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1433 if (SYN_CAP_PALMDETECT(priv->capabilities))
1434 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1436 __set_bit(BTN_TOUCH, dev->keybit);
1437 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1439 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1440 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1441 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1444 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1445 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1446 __set_bit(BTN_FORWARD, dev->keybit);
1447 __set_bit(BTN_BACK, dev->keybit);
1450 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1451 __set_bit(BTN_0 + i, dev->keybit);
1453 __clear_bit(EV_REL, dev->evbit);
1454 __clear_bit(REL_X, dev->relbit);
1455 __clear_bit(REL_Y, dev->relbit);
1457 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1458 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1459 if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1460 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1461 /* Clickpads report only left button */
1462 __clear_bit(BTN_RIGHT, dev->keybit);
1463 __clear_bit(BTN_MIDDLE, dev->keybit);
1467 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1468 void *data, char *buf)
1470 struct synaptics_data *priv = psmouse->private;
1472 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1475 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1476 void *data, const char *buf,
1479 struct synaptics_data *priv = psmouse->private;
1483 err = kstrtouint(buf, 10, &value);
1490 if (value == priv->disable_gesture)
1493 priv->disable_gesture = value;
1495 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1497 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1499 if (synaptics_mode_cmd(psmouse, priv->mode))
1505 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1506 synaptics_show_disable_gesture,
1507 synaptics_set_disable_gesture);
1509 static void synaptics_disconnect(struct psmouse *psmouse)
1511 struct synaptics_data *priv = psmouse->private;
1513 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1514 device_remove_file(&psmouse->ps2dev.serio->dev,
1515 &psmouse_attr_disable_gesture.dattr);
1517 synaptics_reset(psmouse);
1519 psmouse->private = NULL;
1522 static int synaptics_reconnect(struct psmouse *psmouse)
1524 struct synaptics_data *priv = psmouse->private;
1525 struct synaptics_data old_priv = *priv;
1526 unsigned char param[2];
1531 psmouse_reset(psmouse);
1534 * On some boxes, right after resuming, the touchpad
1535 * needs some time to finish initializing (I assume
1536 * it needs time to calibrate) and start responding
1537 * to Synaptics-specific queries, so let's wait a
1542 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1543 error = synaptics_detect(psmouse, 0);
1544 } while (error && ++retry < 3);
1550 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1552 if (synaptics_query_hardware(psmouse)) {
1553 psmouse_err(psmouse, "Unable to query device.\n");
1557 if (synaptics_set_mode(psmouse)) {
1558 psmouse_err(psmouse, "Unable to initialize device.\n");
1562 if (old_priv.identity != priv->identity ||
1563 old_priv.model_id != priv->model_id ||
1564 old_priv.capabilities != priv->capabilities ||
1565 old_priv.ext_cap != priv->ext_cap) {
1566 psmouse_err(psmouse,
1567 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1568 old_priv.identity, priv->identity,
1569 old_priv.model_id, priv->model_id,
1570 old_priv.capabilities, priv->capabilities,
1571 old_priv.ext_cap, priv->ext_cap);
1578 static bool impaired_toshiba_kbc;
1580 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1581 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1583 /* Toshiba Satellite */
1585 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1586 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1590 /* Toshiba Dynabook */
1592 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1593 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1597 /* Toshiba Portege M300 */
1599 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1600 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1605 /* Toshiba Portege M300 */
1607 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1608 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1609 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1617 static bool broken_olpc_ec;
1619 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1620 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1622 /* OLPC XO-1 or XO-1.5 */
1624 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1625 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1632 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1633 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1635 /* Cr-48 Chromebook (Codename Mario) */
1637 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1638 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1645 void __init synaptics_module_init(void)
1647 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1648 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1649 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1652 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1654 struct synaptics_data *priv;
1658 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1659 * packet spew overloads the EC such that key presses on the keyboard
1660 * are missed. Given that, don't even attempt to use Absolute mode.
1661 * Relative mode seems to work just fine.
1663 if (absolute_mode && broken_olpc_ec) {
1664 psmouse_info(psmouse,
1665 "OLPC XO detected, not enabling Synaptics protocol.\n");
1669 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1673 psmouse_reset(psmouse);
1675 if (synaptics_query_hardware(psmouse)) {
1676 psmouse_err(psmouse, "Unable to query device.\n");
1680 priv->absolute_mode = absolute_mode;
1681 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1682 priv->disable_gesture = true;
1684 if (synaptics_set_mode(psmouse)) {
1685 psmouse_err(psmouse, "Unable to initialize device.\n");
1689 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1691 psmouse_info(psmouse,
1692 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1693 SYN_ID_MODEL(priv->identity),
1694 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1696 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1697 priv->board_id, priv->firmware_id);
1699 set_input_params(psmouse, priv);
1702 * Encode touchpad model so that it can be used to set
1703 * input device->id.version and be visible to userspace.
1704 * Because version is __u16 we have to drop something.
1705 * Hardware info bits seem to be good candidates as they
1706 * are documented to be for Synaptics corp. internal use.
1708 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1709 (priv->model_id & 0x000000ff);
1711 if (absolute_mode) {
1712 psmouse->protocol_handler = synaptics_process_byte;
1713 psmouse->pktsize = 6;
1715 /* Relative mode follows standard PS/2 mouse protocol */
1716 psmouse->protocol_handler = psmouse_process_byte;
1717 psmouse->pktsize = 3;
1720 psmouse->set_rate = synaptics_set_rate;
1721 psmouse->disconnect = synaptics_disconnect;
1722 psmouse->reconnect = synaptics_reconnect;
1723 psmouse->cleanup = synaptics_reset;
1724 /* Synaptics can usually stay in sync without extra help */
1725 psmouse->resync_time = 0;
1727 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1728 synaptics_pt_create(psmouse);
1731 * Toshiba's KBC seems to have trouble handling data from
1732 * Synaptics at full rate. Switch to a lower rate (roughly
1733 * the same rate as a standard PS/2 mouse).
1735 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1736 psmouse_info(psmouse,
1737 "Toshiba %s detected, limiting rate to 40pps.\n",
1738 dmi_get_system_info(DMI_PRODUCT_NAME));
1742 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1743 err = device_create_file(&psmouse->ps2dev.serio->dev,
1744 &psmouse_attr_disable_gesture.dattr);
1746 psmouse_err(psmouse,
1747 "Failed to create disable_gesture attribute (%d)",
1760 int synaptics_init(struct psmouse *psmouse)
1762 return __synaptics_init(psmouse, true);
1765 int synaptics_init_relative(struct psmouse *psmouse)
1767 return __synaptics_init(psmouse, false);
1770 bool synaptics_supported(void)
1775 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1777 void __init synaptics_module_init(void)
1781 int synaptics_init(struct psmouse *psmouse)
1786 bool synaptics_supported(void)
1791 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */