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 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++)
351 if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
352 priv->x_min = min_max_pnpid_table[i].x_min;
353 priv->x_max = min_max_pnpid_table[i].x_max;
354 priv->y_min = min_max_pnpid_table[i].y_min;
355 priv->y_max = min_max_pnpid_table[i].y_max;
359 if (SYN_ID_MAJOR(priv->identity) < 4)
362 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
363 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
364 priv->x_res = resp[0]; /* x resolution in units/mm */
365 priv->y_res = resp[2]; /* y resolution in units/mm */
369 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
370 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
371 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
372 psmouse_warn(psmouse,
373 "device claims to have max coordinates query, but I'm not able to read it.\n");
375 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
376 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
380 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
381 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
382 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
383 psmouse_warn(psmouse,
384 "device claims to have min coordinates query, but I'm not able to read it.\n");
386 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
387 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
394 static int synaptics_query_hardware(struct psmouse *psmouse)
396 if (synaptics_identify(psmouse))
398 if (synaptics_model_id(psmouse))
400 if (synaptics_firmware_id(psmouse))
402 if (synaptics_board_id(psmouse))
404 if (synaptics_capability(psmouse))
406 if (synaptics_resolution(psmouse))
412 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
414 static unsigned char param = 0xc8;
415 struct synaptics_data *priv = psmouse->private;
417 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
418 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
421 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
424 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
427 /* Advanced gesture mode also sends multi finger data */
428 priv->capabilities |= BIT(1);
433 static int synaptics_set_mode(struct psmouse *psmouse)
435 struct synaptics_data *priv = psmouse->private;
438 if (priv->absolute_mode)
439 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
440 if (priv->disable_gesture)
441 priv->mode |= SYN_BIT_DISABLE_GESTURE;
442 if (psmouse->rate >= 80)
443 priv->mode |= SYN_BIT_HIGH_RATE;
444 if (SYN_CAP_EXTENDED(priv->capabilities))
445 priv->mode |= SYN_BIT_W_MODE;
447 if (synaptics_mode_cmd(psmouse, priv->mode))
450 if (priv->absolute_mode &&
451 synaptics_set_advanced_gesture_mode(psmouse)) {
452 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
459 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
461 struct synaptics_data *priv = psmouse->private;
464 priv->mode |= SYN_BIT_HIGH_RATE;
467 priv->mode &= ~SYN_BIT_HIGH_RATE;
471 synaptics_mode_cmd(psmouse, priv->mode);
474 /*****************************************************************************
475 * Synaptics pass-through PS/2 port support
476 ****************************************************************************/
477 static int synaptics_pt_write(struct serio *serio, unsigned char c)
479 struct psmouse *parent = serio_get_drvdata(serio->parent);
480 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
482 if (psmouse_sliced_command(parent, c))
484 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
489 static int synaptics_pt_start(struct serio *serio)
491 struct psmouse *parent = serio_get_drvdata(serio->parent);
492 struct synaptics_data *priv = parent->private;
494 serio_pause_rx(parent->ps2dev.serio);
495 priv->pt_port = serio;
496 serio_continue_rx(parent->ps2dev.serio);
501 static void synaptics_pt_stop(struct serio *serio)
503 struct psmouse *parent = serio_get_drvdata(serio->parent);
504 struct synaptics_data *priv = parent->private;
506 serio_pause_rx(parent->ps2dev.serio);
507 priv->pt_port = NULL;
508 serio_continue_rx(parent->ps2dev.serio);
511 static int synaptics_is_pt_packet(unsigned char *buf)
513 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
516 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
518 struct psmouse *child = serio_get_drvdata(ptport);
520 if (child && child->state == PSMOUSE_ACTIVATED) {
521 serio_interrupt(ptport, packet[1], 0);
522 serio_interrupt(ptport, packet[4], 0);
523 serio_interrupt(ptport, packet[5], 0);
524 if (child->pktsize == 4)
525 serio_interrupt(ptport, packet[2], 0);
527 serio_interrupt(ptport, packet[1], 0);
530 static void synaptics_pt_activate(struct psmouse *psmouse)
532 struct synaptics_data *priv = psmouse->private;
533 struct psmouse *child = serio_get_drvdata(priv->pt_port);
535 /* adjust the touchpad to child's choice of protocol */
537 if (child->pktsize == 4)
538 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
540 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
542 if (synaptics_mode_cmd(psmouse, priv->mode))
543 psmouse_warn(psmouse,
544 "failed to switch guest protocol\n");
548 static void synaptics_pt_create(struct psmouse *psmouse)
552 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
555 "not enough memory for pass-through port\n");
559 serio->id.type = SERIO_PS_PSTHRU;
560 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
561 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
562 serio->write = synaptics_pt_write;
563 serio->start = synaptics_pt_start;
564 serio->stop = synaptics_pt_stop;
565 serio->parent = psmouse->ps2dev.serio;
567 psmouse->pt_activate = synaptics_pt_activate;
569 psmouse_info(psmouse, "serio: %s port at %s\n",
570 serio->name, psmouse->phys);
571 serio_register_port(serio);
574 /*****************************************************************************
575 * Functions to interpret the absolute mode packets
576 ****************************************************************************/
578 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
581 state->count = count;
586 static void synaptics_parse_agm(const unsigned char buf[],
587 struct synaptics_data *priv,
588 struct synaptics_hw_state *hw)
590 struct synaptics_hw_state *agm = &priv->agm;
593 agm_packet_type = (buf[5] & 0x30) >> 4;
594 switch (agm_packet_type) {
596 /* Gesture packet: (x, y, z) half resolution */
598 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
599 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
600 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
604 /* AGM-CONTACT packet: (count, sgm, agm) */
605 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
612 /* Record that at least one AGM has been received since last SGM */
613 priv->agm_pending = true;
616 static int synaptics_parse_hw_state(const unsigned char buf[],
617 struct synaptics_data *priv,
618 struct synaptics_hw_state *hw)
620 memset(hw, 0, sizeof(struct synaptics_hw_state));
622 if (SYN_MODEL_NEWABS(priv->model_id)) {
623 hw->w = (((buf[0] & 0x30) >> 2) |
624 ((buf[0] & 0x04) >> 1) |
625 ((buf[3] & 0x04) >> 2));
627 hw->left = (buf[0] & 0x01) ? 1 : 0;
628 hw->right = (buf[0] & 0x02) ? 1 : 0;
630 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
632 * Clickpad's button is transmitted as middle button,
633 * however, since it is primary button, we will report
636 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
638 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
639 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
641 hw->scroll = (signed char)(buf[1]);
644 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
645 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
646 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
649 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
650 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
652 synaptics_parse_agm(buf, priv, hw);
656 hw->x = (((buf[3] & 0x10) << 8) |
657 ((buf[1] & 0x0f) << 8) |
659 hw->y = (((buf[3] & 0x20) << 7) |
660 ((buf[1] & 0xf0) << 4) |
664 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
665 ((buf[0] ^ buf[3]) & 0x02)) {
666 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
669 * if nExtBtn is greater than 8 it should be
670 * considered invalid and treated as 0
674 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
675 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
677 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
678 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
680 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
681 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
683 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
684 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
688 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
689 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
691 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
692 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
694 hw->left = (buf[0] & 0x01) ? 1 : 0;
695 hw->right = (buf[0] & 0x02) ? 1 : 0;
699 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
700 * is used by some firmware to indicate a finger at the edge of
701 * the touchpad whose precise position cannot be determined, so
702 * convert these values to the maximum axis value.
704 if (hw->x > X_MAX_POSITIVE)
705 hw->x -= 1 << ABS_POS_BITS;
706 else if (hw->x == X_MAX_POSITIVE)
709 if (hw->y > Y_MAX_POSITIVE)
710 hw->y -= 1 << ABS_POS_BITS;
711 else if (hw->y == Y_MAX_POSITIVE)
717 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
718 bool active, int x, int y)
720 input_mt_slot(dev, slot);
721 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
723 input_report_abs(dev, ABS_MT_POSITION_X, x);
724 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
728 static void synaptics_report_semi_mt_data(struct input_dev *dev,
729 const struct synaptics_hw_state *a,
730 const struct synaptics_hw_state *b,
733 if (num_fingers >= 2) {
734 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
736 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
738 } else if (num_fingers == 1) {
739 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
740 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
742 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
743 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
747 static void synaptics_report_buttons(struct psmouse *psmouse,
748 const struct synaptics_hw_state *hw)
750 struct input_dev *dev = psmouse->dev;
751 struct synaptics_data *priv = psmouse->private;
754 input_report_key(dev, BTN_LEFT, hw->left);
755 input_report_key(dev, BTN_RIGHT, hw->right);
757 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
758 input_report_key(dev, BTN_MIDDLE, hw->middle);
760 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
761 input_report_key(dev, BTN_FORWARD, hw->up);
762 input_report_key(dev, BTN_BACK, hw->down);
765 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
766 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
769 static void synaptics_report_slot(struct input_dev *dev, int slot,
770 const struct synaptics_hw_state *hw)
772 input_mt_slot(dev, slot);
773 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
777 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
778 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
779 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
782 static void synaptics_report_mt_data(struct psmouse *psmouse,
783 struct synaptics_mt_state *mt_state,
784 const struct synaptics_hw_state *sgm)
786 struct input_dev *dev = psmouse->dev;
787 struct synaptics_data *priv = psmouse->private;
788 struct synaptics_hw_state *agm = &priv->agm;
789 struct synaptics_mt_state *old = &priv->mt_state;
791 switch (mt_state->count) {
793 synaptics_report_slot(dev, 0, NULL);
794 synaptics_report_slot(dev, 1, NULL);
797 if (mt_state->sgm == -1) {
798 synaptics_report_slot(dev, 0, NULL);
799 synaptics_report_slot(dev, 1, NULL);
800 } else if (mt_state->sgm == 0) {
801 synaptics_report_slot(dev, 0, sgm);
802 synaptics_report_slot(dev, 1, NULL);
804 synaptics_report_slot(dev, 0, NULL);
805 synaptics_report_slot(dev, 1, sgm);
810 * If the finger slot contained in SGM is valid, and either
811 * hasn't changed, or is new, or the old SGM has now moved to
812 * AGM, then report SGM in MTB slot 0.
813 * Otherwise, empty MTB slot 0.
815 if (mt_state->sgm != -1 &&
816 (mt_state->sgm == old->sgm ||
817 old->sgm == -1 || mt_state->agm == old->sgm))
818 synaptics_report_slot(dev, 0, sgm);
820 synaptics_report_slot(dev, 0, NULL);
823 * If the finger slot contained in AGM is valid, and either
824 * hasn't changed, or is new, then report AGM in MTB slot 1.
825 * Otherwise, empty MTB slot 1.
827 * However, in the case where the AGM is new, make sure that
828 * that it is either the same as the old SGM, or there was no
831 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
832 * the new AGM will keep the old SGM's tracking ID, which can
833 * cause apparent drumroll. This happens if in the following
834 * valid finger sequence:
836 * Action SGM AGM (MTB slot:Contact)
837 * 1. Touch contact 0 (0:0)
838 * 2. Touch contact 1 (0:0, 1:1)
839 * 3. Lift contact 0 (1:1)
840 * 4. Touch contacts 2,3 (0:2, 1:3)
842 * In step 4, contact 3, in AGM must not be given the same
843 * tracking ID as contact 1 had in step 3. To avoid this,
844 * the first agm with contact 3 is dropped and slot 1 is
845 * invalidated (tracking ID = -1).
847 if (mt_state->agm != -1 &&
848 (mt_state->agm == old->agm ||
850 (old->sgm == -1 || mt_state->agm == old->sgm))))
851 synaptics_report_slot(dev, 1, agm);
853 synaptics_report_slot(dev, 1, NULL);
857 /* Don't use active slot count to generate BTN_TOOL events. */
858 input_mt_report_pointer_emulation(dev, false);
860 /* Send the number of fingers reported by touchpad itself. */
861 input_mt_report_finger_count(dev, mt_state->count);
863 synaptics_report_buttons(psmouse, sgm);
868 /* Handle case where mt_state->count = 0 */
869 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
870 struct synaptics_mt_state *mt_state)
872 synaptics_mt_state_set(mt_state, 0, -1, -1);
873 priv->mt_state_lost = false;
876 /* Handle case where mt_state->count = 1 */
877 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
878 struct synaptics_mt_state *mt_state)
880 struct synaptics_hw_state *agm = &priv->agm;
881 struct synaptics_mt_state *old = &priv->mt_state;
884 * If the last AGM was (0,0,0), and there is only one finger left,
885 * then we absolutely know that SGM contains slot 0, and all other
886 * fingers have been removed.
888 if (priv->agm_pending && agm->z == 0) {
889 synaptics_mt_state_set(mt_state, 1, 0, -1);
890 priv->mt_state_lost = false;
894 switch (old->count) {
896 synaptics_mt_state_set(mt_state, 1, 0, -1);
900 * If mt_state_lost, then the previous transition was 3->1,
901 * and SGM now contains either slot 0 or 1, but we don't know
902 * which. So, we just assume that the SGM now contains slot 1.
904 * If pending AGM and either:
905 * (a) the previous SGM slot contains slot 0, or
906 * (b) there was no SGM slot
907 * then, the SGM now contains slot 1
909 * Case (a) happens with very rapid "drum roll" gestures, where
910 * slot 0 finger is lifted and a new slot 1 finger touches
911 * within one reporting interval.
913 * Case (b) happens if initially two or more fingers tap
914 * briefly, and all but one lift before the end of the first
915 * reporting interval.
917 * (In both these cases, slot 0 will becomes empty, so SGM
918 * contains slot 1 with the new finger)
920 * Else, if there was no previous SGM, it now contains slot 0.
922 * Otherwise, SGM still contains the same slot.
924 if (priv->mt_state_lost ||
925 (priv->agm_pending && old->sgm <= 0))
926 synaptics_mt_state_set(mt_state, 1, 1, -1);
927 else if (old->sgm == -1)
928 synaptics_mt_state_set(mt_state, 1, 0, -1);
932 * If mt_state_lost, we don't know which finger SGM contains.
934 * So, report 1 finger, but with both slots empty.
935 * We will use slot 1 on subsequent 1->1
937 if (priv->mt_state_lost) {
938 synaptics_mt_state_set(mt_state, 1, -1, -1);
942 * Since the last AGM was NOT (0,0,0), it was the finger in
943 * slot 0 that has been removed.
944 * So, SGM now contains previous AGM's slot, and AGM is now
947 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
951 * Since last AGM was not (0,0,0), we don't know which finger
954 * So, report 1 finger, but with both slots empty.
955 * We will use slot 1 on subsequent 1->1
957 synaptics_mt_state_set(mt_state, 1, -1, -1);
958 priv->mt_state_lost = true;
962 /* mt_state was updated by AGM-CONTACT packet */
967 /* Handle case where mt_state->count = 2 */
968 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
969 struct synaptics_mt_state *mt_state)
971 struct synaptics_mt_state *old = &priv->mt_state;
973 switch (old->count) {
975 synaptics_mt_state_set(mt_state, 2, 0, 1);
979 * If previous SGM contained slot 1 or higher, SGM now contains
980 * slot 0 (the newly touching finger) and AGM contains SGM's
983 * Otherwise, SGM still contains slot 0 and AGM now contains
987 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
989 synaptics_mt_state_set(mt_state, 2, 0, 1);
993 * If mt_state_lost, SGM now contains either finger 1 or 2, but
994 * we don't know which.
995 * So, we just assume that the SGM contains slot 0 and AGM 1.
997 if (priv->mt_state_lost)
998 synaptics_mt_state_set(mt_state, 2, 0, 1);
1000 * Otherwise, use the same mt_state, since it either hasn't
1001 * changed, or was updated by a recently received AGM-CONTACT
1007 * 3->2 transitions have two unsolvable problems:
1008 * 1) no indication is given which finger was removed
1009 * 2) no way to tell if agm packet was for finger 3
1010 * before 3->2, or finger 2 after 3->2.
1012 * So, report 2 fingers, but empty all slots.
1013 * We will guess slots [0,1] on subsequent 2->2.
1015 synaptics_mt_state_set(mt_state, 2, -1, -1);
1016 priv->mt_state_lost = true;
1020 /* mt_state was updated by AGM-CONTACT packet */
1025 /* Handle case where mt_state->count = 3 */
1026 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
1027 struct synaptics_mt_state *mt_state)
1029 struct synaptics_mt_state *old = &priv->mt_state;
1031 switch (old->count) {
1033 synaptics_mt_state_set(mt_state, 3, 0, 2);
1037 * If previous SGM contained slot 2 or higher, SGM now contains
1038 * slot 0 (one of the newly touching fingers) and AGM contains
1039 * SGM's previous slot.
1041 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
1044 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
1046 synaptics_mt_state_set(mt_state, 3, 0, 2);
1050 * If the AGM previously contained slot 3 or higher, then the
1051 * newly touching finger is in the lowest available slot.
1053 * If SGM was previously 1 or higher, then the new SGM is
1054 * now slot 0 (with a new finger), otherwise, the new finger
1055 * is now in a hidden slot between 0 and AGM's slot.
1057 * In all such cases, the SGM now contains slot 0, and the AGM
1058 * continues to contain the same slot as before.
1060 if (old->agm >= 3) {
1061 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
1066 * After some 3->1 and all 3->2 transitions, we lose track
1067 * of which slot is reported by SGM and AGM.
1069 * For 2->3 in this state, report 3 fingers, but empty all
1070 * slots, and we will guess (0,2) on a subsequent 0->3.
1072 * To userspace, the resulting transition will look like:
1073 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
1075 if (priv->mt_state_lost) {
1076 synaptics_mt_state_set(mt_state, 3, -1, -1);
1081 * If the (SGM,AGM) really previously contained slots (0, 1),
1082 * then we cannot know what slot was just reported by the AGM,
1083 * because the 2->3 transition can occur either before or after
1084 * the AGM packet. Thus, this most recent AGM could contain
1085 * either the same old slot 1 or the new slot 2.
1086 * Subsequent AGMs will be reporting slot 2.
1088 * To userspace, the resulting transition will look like:
1089 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1091 synaptics_mt_state_set(mt_state, 3, 0, -1);
1095 * If, for whatever reason, the previous agm was invalid,
1096 * Assume SGM now contains slot 0, AGM now contains slot 2.
1099 synaptics_mt_state_set(mt_state, 3, 0, 2);
1101 * mt_state either hasn't changed, or was updated by a recently
1102 * received AGM-CONTACT packet.
1108 /* mt_state was updated by AGM-CONTACT packet */
1113 /* Handle case where mt_state->count = 4, or = 5 */
1114 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1115 struct synaptics_mt_state *mt_state)
1117 /* mt_state was updated correctly by AGM-CONTACT packet */
1118 priv->mt_state_lost = false;
1121 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1122 struct synaptics_hw_state *sgm)
1124 struct synaptics_data *priv = psmouse->private;
1125 struct synaptics_hw_state *agm = &priv->agm;
1126 struct synaptics_mt_state mt_state;
1128 /* Initialize using current mt_state (as updated by last agm) */
1129 mt_state = agm->mt_state;
1132 * Update mt_state using the new finger count and current mt_state.
1135 synaptics_image_sensor_0f(priv, &mt_state);
1136 else if (sgm->w >= 4)
1137 synaptics_image_sensor_1f(priv, &mt_state);
1138 else if (sgm->w == 0)
1139 synaptics_image_sensor_2f(priv, &mt_state);
1140 else if (sgm->w == 1 && mt_state.count <= 3)
1141 synaptics_image_sensor_3f(priv, &mt_state);
1143 synaptics_image_sensor_45f(priv, &mt_state);
1145 /* Send resulting input events to user space */
1146 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1148 /* Store updated mt_state */
1149 priv->mt_state = agm->mt_state = mt_state;
1150 priv->agm_pending = false;
1154 * called for each full received packet from the touchpad
1156 static void synaptics_process_packet(struct psmouse *psmouse)
1158 struct input_dev *dev = psmouse->dev;
1159 struct synaptics_data *priv = psmouse->private;
1160 struct synaptics_hw_state hw;
1164 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1167 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1168 synaptics_image_sensor_process(psmouse, &hw);
1173 priv->scroll += hw.scroll;
1175 while (priv->scroll >= 4) {
1176 input_report_key(dev, BTN_BACK, !hw.down);
1178 input_report_key(dev, BTN_BACK, hw.down);
1182 while (priv->scroll <= -4) {
1183 input_report_key(dev, BTN_FORWARD, !hw.up);
1185 input_report_key(dev, BTN_FORWARD, hw.up);
1192 if (hw.z > 0 && hw.x > 1) {
1195 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1198 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1199 num_fingers = hw.w + 2;
1202 if (SYN_MODEL_PEN(priv->model_id))
1203 ; /* Nothing, treat a pen as a single finger */
1206 if (SYN_CAP_PALMDETECT(priv->capabilities))
1207 finger_width = hw.w;
1216 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1217 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1221 * BTN_TOUCH has to be first as mousedev relies on it when doing
1222 * absolute -> relative conversion
1224 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1225 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1227 if (num_fingers > 0) {
1228 input_report_abs(dev, ABS_X, hw.x);
1229 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1231 input_report_abs(dev, ABS_PRESSURE, hw.z);
1233 if (SYN_CAP_PALMDETECT(priv->capabilities))
1234 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1236 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1237 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1238 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1239 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1242 synaptics_report_buttons(psmouse, &hw);
1247 static int synaptics_validate_byte(struct psmouse *psmouse,
1248 int idx, unsigned char pkt_type)
1250 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1251 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1252 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1253 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1254 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1255 const char *packet = psmouse->packet;
1257 if (idx < 0 || idx > 4)
1263 case SYN_NEWABS_RELAXED:
1264 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1266 case SYN_NEWABS_STRICT:
1267 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1270 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1273 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1278 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1282 for (i = 0; i < 5; i++)
1283 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1284 psmouse_info(psmouse, "using relaxed packet validation\n");
1285 return SYN_NEWABS_RELAXED;
1288 return SYN_NEWABS_STRICT;
1291 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1293 struct synaptics_data *priv = psmouse->private;
1295 if (psmouse->pktcnt >= 6) { /* Full packet received */
1296 if (unlikely(priv->pkt_type == SYN_NEWABS))
1297 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1299 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1300 synaptics_is_pt_packet(psmouse->packet)) {
1302 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1304 synaptics_process_packet(psmouse);
1306 return PSMOUSE_FULL_PACKET;
1309 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1310 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1313 /*****************************************************************************
1314 * Driver initialization/cleanup functions
1315 ****************************************************************************/
1316 static void set_abs_position_params(struct input_dev *dev,
1317 struct synaptics_data *priv, int x_code,
1320 int x_min = priv->x_min ?: XMIN_NOMINAL;
1321 int x_max = priv->x_max ?: XMAX_NOMINAL;
1322 int y_min = priv->y_min ?: YMIN_NOMINAL;
1323 int y_max = priv->y_max ?: YMAX_NOMINAL;
1324 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1325 SYN_REDUCED_FILTER_FUZZ : 0;
1327 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1328 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1329 input_abs_set_res(dev, x_code, priv->x_res);
1330 input_abs_set_res(dev, y_code, priv->y_res);
1333 static void set_input_params(struct psmouse *psmouse,
1334 struct synaptics_data *priv)
1336 struct input_dev *dev = psmouse->dev;
1339 /* Things that apply to both modes */
1340 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1341 __set_bit(EV_KEY, dev->evbit);
1342 __set_bit(BTN_LEFT, dev->keybit);
1343 __set_bit(BTN_RIGHT, dev->keybit);
1345 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1346 __set_bit(BTN_MIDDLE, dev->keybit);
1348 if (!priv->absolute_mode) {
1350 __set_bit(EV_REL, dev->evbit);
1351 __set_bit(REL_X, dev->relbit);
1352 __set_bit(REL_Y, dev->relbit);
1357 __set_bit(EV_ABS, dev->evbit);
1358 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1359 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1361 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1362 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1364 /* Image sensors can report per-contact pressure */
1365 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1366 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1368 /* Image sensors can signal 4 and 5 finger clicks */
1369 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1370 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1371 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1372 /* Non-image sensors with AGM use semi-mt */
1373 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1374 input_mt_init_slots(dev, 2, 0);
1375 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1379 if (SYN_CAP_PALMDETECT(priv->capabilities))
1380 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1382 __set_bit(BTN_TOUCH, dev->keybit);
1383 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1385 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1386 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1387 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1390 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1391 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1392 __set_bit(BTN_FORWARD, dev->keybit);
1393 __set_bit(BTN_BACK, dev->keybit);
1396 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1397 __set_bit(BTN_0 + i, dev->keybit);
1399 __clear_bit(EV_REL, dev->evbit);
1400 __clear_bit(REL_X, dev->relbit);
1401 __clear_bit(REL_Y, dev->relbit);
1403 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1404 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1405 if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
1406 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1407 /* Clickpads report only left button */
1408 __clear_bit(BTN_RIGHT, dev->keybit);
1409 __clear_bit(BTN_MIDDLE, dev->keybit);
1413 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1414 void *data, char *buf)
1416 struct synaptics_data *priv = psmouse->private;
1418 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1421 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1422 void *data, const char *buf,
1425 struct synaptics_data *priv = psmouse->private;
1429 err = kstrtouint(buf, 10, &value);
1436 if (value == priv->disable_gesture)
1439 priv->disable_gesture = value;
1441 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1443 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1445 if (synaptics_mode_cmd(psmouse, priv->mode))
1451 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1452 synaptics_show_disable_gesture,
1453 synaptics_set_disable_gesture);
1455 static void synaptics_disconnect(struct psmouse *psmouse)
1457 struct synaptics_data *priv = psmouse->private;
1459 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1460 device_remove_file(&psmouse->ps2dev.serio->dev,
1461 &psmouse_attr_disable_gesture.dattr);
1463 synaptics_reset(psmouse);
1465 psmouse->private = NULL;
1468 static int synaptics_reconnect(struct psmouse *psmouse)
1470 struct synaptics_data *priv = psmouse->private;
1471 struct synaptics_data old_priv = *priv;
1472 unsigned char param[2];
1477 psmouse_reset(psmouse);
1480 * On some boxes, right after resuming, the touchpad
1481 * needs some time to finish initializing (I assume
1482 * it needs time to calibrate) and start responding
1483 * to Synaptics-specific queries, so let's wait a
1488 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1489 error = synaptics_detect(psmouse, 0);
1490 } while (error && ++retry < 3);
1496 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1498 if (synaptics_query_hardware(psmouse)) {
1499 psmouse_err(psmouse, "Unable to query device.\n");
1503 if (synaptics_set_mode(psmouse)) {
1504 psmouse_err(psmouse, "Unable to initialize device.\n");
1508 if (old_priv.identity != priv->identity ||
1509 old_priv.model_id != priv->model_id ||
1510 old_priv.capabilities != priv->capabilities ||
1511 old_priv.ext_cap != priv->ext_cap) {
1512 psmouse_err(psmouse,
1513 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1514 old_priv.identity, priv->identity,
1515 old_priv.model_id, priv->model_id,
1516 old_priv.capabilities, priv->capabilities,
1517 old_priv.ext_cap, priv->ext_cap);
1524 static bool impaired_toshiba_kbc;
1526 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1527 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1529 /* Toshiba Satellite */
1531 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1532 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1536 /* Toshiba Dynabook */
1538 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1539 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1543 /* Toshiba Portege M300 */
1545 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1546 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1551 /* Toshiba Portege M300 */
1553 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1554 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1555 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1563 static bool broken_olpc_ec;
1565 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1566 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1568 /* OLPC XO-1 or XO-1.5 */
1570 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1571 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1578 void __init synaptics_module_init(void)
1580 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1581 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1584 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1586 struct synaptics_data *priv;
1590 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1591 * packet spew overloads the EC such that key presses on the keyboard
1592 * are missed. Given that, don't even attempt to use Absolute mode.
1593 * Relative mode seems to work just fine.
1595 if (absolute_mode && broken_olpc_ec) {
1596 psmouse_info(psmouse,
1597 "OLPC XO detected, not enabling Synaptics protocol.\n");
1601 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1605 psmouse_reset(psmouse);
1607 if (synaptics_query_hardware(psmouse)) {
1608 psmouse_err(psmouse, "Unable to query device.\n");
1612 priv->absolute_mode = absolute_mode;
1613 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1614 priv->disable_gesture = true;
1616 if (synaptics_set_mode(psmouse)) {
1617 psmouse_err(psmouse, "Unable to initialize device.\n");
1621 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1623 psmouse_info(psmouse,
1624 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1625 SYN_ID_MODEL(priv->identity),
1626 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1628 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1629 priv->board_id, priv->firmware_id);
1631 set_input_params(psmouse, priv);
1634 * Encode touchpad model so that it can be used to set
1635 * input device->id.version and be visible to userspace.
1636 * Because version is __u16 we have to drop something.
1637 * Hardware info bits seem to be good candidates as they
1638 * are documented to be for Synaptics corp. internal use.
1640 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1641 (priv->model_id & 0x000000ff);
1643 if (absolute_mode) {
1644 psmouse->protocol_handler = synaptics_process_byte;
1645 psmouse->pktsize = 6;
1647 /* Relative mode follows standard PS/2 mouse protocol */
1648 psmouse->protocol_handler = psmouse_process_byte;
1649 psmouse->pktsize = 3;
1652 psmouse->set_rate = synaptics_set_rate;
1653 psmouse->disconnect = synaptics_disconnect;
1654 psmouse->reconnect = synaptics_reconnect;
1655 psmouse->cleanup = synaptics_reset;
1656 /* Synaptics can usually stay in sync without extra help */
1657 psmouse->resync_time = 0;
1659 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1660 synaptics_pt_create(psmouse);
1663 * Toshiba's KBC seems to have trouble handling data from
1664 * Synaptics at full rate. Switch to a lower rate (roughly
1665 * the same rate as a standard PS/2 mouse).
1667 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1668 psmouse_info(psmouse,
1669 "Toshiba %s detected, limiting rate to 40pps.\n",
1670 dmi_get_system_info(DMI_PRODUCT_NAME));
1674 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1675 err = device_create_file(&psmouse->ps2dev.serio->dev,
1676 &psmouse_attr_disable_gesture.dattr);
1678 psmouse_err(psmouse,
1679 "Failed to create disable_gesture attribute (%d)",
1692 int synaptics_init(struct psmouse *psmouse)
1694 return __synaptics_init(psmouse, true);
1697 int synaptics_init_relative(struct psmouse *psmouse)
1699 return __synaptics_init(psmouse, false);
1702 bool synaptics_supported(void)
1707 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1709 void __init synaptics_module_init(void)
1713 int synaptics_init(struct psmouse *psmouse)
1718 bool synaptics_supported(void)
1723 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */