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/rmi.h>
33 #include <linux/i2c.h>
34 #include <linux/slab.h>
36 #include "synaptics.h"
39 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
40 * section 2.3.2, which says that they should be valid regardless of the
41 * actual size of the sensor.
42 * Note that newer firmware allows querying device for maximum useable
49 #define XMIN_NOMINAL 1472
50 #define XMAX_NOMINAL 5472
51 #define YMIN_NOMINAL 1408
52 #define YMAX_NOMINAL 4448
54 /* Size in bits of absolute position values reported by the hardware */
55 #define ABS_POS_BITS 13
58 * These values should represent the absolute maximum value that will
59 * be reported for a positive position value. Some Synaptics firmware
60 * uses this value to indicate a finger near the edge of the touchpad
61 * whose precise position cannot be determined.
63 * At least one touchpad is known to report positions in excess of this
64 * value which are actually negative values truncated to the 13-bit
65 * reporting range. These values have never been observed to be lower
66 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
67 * negative and any other value as positive.
69 #define X_MAX_POSITIVE 8176
70 #define Y_MAX_POSITIVE 8176
72 /* maximum ABS_MT_POSITION displacement (in mm) */
75 /*****************************************************************************
76 * Stuff we need even when we do not want native Synaptics support
77 ****************************************************************************/
80 * Set the synaptics touchpad mode byte by special commands
82 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
87 error = psmouse_sliced_command(psmouse, mode);
91 param[0] = SYN_PS_SET_MODE2;
92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
99 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
101 struct ps2dev *ps2dev = &psmouse->ps2dev;
106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
108 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
109 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
110 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
112 if (param[1] != 0x47)
115 if (set_properties) {
116 psmouse->vendor = "Synaptics";
117 psmouse->name = "TouchPad";
123 void synaptics_reset(struct psmouse *psmouse)
125 /* reset touchpad back to relative mode, gestures enabled */
126 synaptics_mode_cmd(psmouse, 0);
129 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
130 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
132 /* This list has been kindly provided by Synaptics. */
133 static const char * const topbuttonpad_pnp_ids[] = {
143 "LEN0033", /* Helix */
144 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
145 "LEN0035", /* X240 */
146 "LEN0036", /* T440 */
147 "LEN0037", /* X1 Carbon 2nd */
149 "LEN0039", /* T440s */
151 "LEN0042", /* Yoga */
155 "LEN2000", /* S540 */
156 "LEN2001", /* Edge E431 */
157 "LEN2002", /* Edge E531 */
159 "LEN2004", /* L440 */
161 "LEN2006", /* Edge E440/E540 */
170 static const char * const smbus_pnp_ids[] = {
171 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
172 "LEN0048", /* X1 Carbon 3 */
173 "LEN0046", /* X250 */
174 "LEN004a", /* W541 */
175 "LEN200f", /* T450s */
179 static const char * const forcepad_pnp_ids[] = {
186 * Send a command to the synpatics touchpad by special commands
188 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
192 error = psmouse_sliced_command(psmouse, cmd);
196 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
203 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
211 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
215 *val = be32_to_cpu(resp.be_val);
221 * See also the SYN_ID_* macros
223 static int synaptics_identify(struct psmouse *psmouse,
224 struct synaptics_device_info *info)
228 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
232 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
236 * Read the model-id bytes from the touchpad
237 * see also SYN_MODEL_* macros
239 static int synaptics_model_id(struct psmouse *psmouse,
240 struct synaptics_device_info *info)
242 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
246 * Read the firmware id from the touchpad
248 static int synaptics_firmware_id(struct psmouse *psmouse,
249 struct synaptics_device_info *info)
251 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
256 * Read the board id and the "More Extended Queries" from the touchpad
257 * The board id is encoded in the "QUERY MODES" response
259 static int synaptics_query_modes(struct psmouse *psmouse,
260 struct synaptics_device_info *info)
265 /* firmwares prior 7.5 have no board_id encoded */
266 if (SYN_ID_FULL(info->identity) < 0x705)
269 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
273 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
275 if (SYN_MEXT_CAP_BIT(bid[0]))
276 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
283 * Read the capability-bits from the touchpad
284 * see also the SYN_CAP_* macros
286 static int synaptics_capability(struct psmouse *psmouse,
287 struct synaptics_device_info *info)
291 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
292 &info->capabilities);
296 info->ext_cap = info->ext_cap_0c = 0;
299 * Older firmwares had submodel ID fixed to 0x47
301 if (SYN_ID_FULL(info->identity) < 0x705 &&
302 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
307 * Unless capExtended is set the rest of the flags should be ignored
309 if (!SYN_CAP_EXTENDED(info->capabilities))
310 info->capabilities = 0;
312 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
313 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
316 psmouse_warn(psmouse,
317 "device claims to have extended capabilities, but I'm not able to read them.\n");
320 * if nExtBtn is greater than 8 it should be considered
321 * invalid and treated as 0
323 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
324 info->ext_cap &= ~SYN_CAP_MB_MASK;
328 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
329 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
332 psmouse_warn(psmouse,
333 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
340 * Read touchpad resolution and maximum reported coordinates
341 * Resolution is left zero if touchpad does not support the query
343 static int synaptics_resolution(struct psmouse *psmouse,
344 struct synaptics_device_info *info)
349 if (SYN_ID_MAJOR(info->identity) < 4)
352 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
354 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
355 info->x_res = resp[0]; /* x resolution in units/mm */
356 info->y_res = resp[2]; /* y resolution in units/mm */
360 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
361 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
362 error = synaptics_send_cmd(psmouse,
363 SYN_QUE_EXT_MAX_COORDS, resp);
365 psmouse_warn(psmouse,
366 "device claims to have max coordinates query, but I'm not able to read it.\n");
368 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
369 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
370 psmouse_info(psmouse,
371 "queried max coordinates: x [..%d], y [..%d]\n",
372 info->x_max, info->y_max);
376 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
377 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
379 * Firmware v8.1 does not report proper number of extended
380 * capabilities, but has been proven to report correct min
383 SYN_ID_FULL(info->identity) == 0x801)) {
384 error = synaptics_send_cmd(psmouse,
385 SYN_QUE_EXT_MIN_COORDS, resp);
387 psmouse_warn(psmouse,
388 "device claims to have min coordinates query, but I'm not able to read it.\n");
390 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
391 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
392 psmouse_info(psmouse,
393 "queried min coordinates: x [%d..], y [%d..]\n",
394 info->x_min, info->y_min);
401 static int synaptics_query_hardware(struct psmouse *psmouse,
402 struct synaptics_device_info *info)
406 memset(info, 0, sizeof(*info));
408 error = synaptics_identify(psmouse, info);
412 error = synaptics_model_id(psmouse, info);
416 error = synaptics_firmware_id(psmouse, info);
420 error = synaptics_query_modes(psmouse, info);
424 error = synaptics_capability(psmouse, info);
428 error = synaptics_resolution(psmouse, info);
435 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
437 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
439 static bool cr48_profile_sensor;
441 #define ANY_BOARD_ID 0
442 struct min_max_quirk {
443 const char * const *pnp_ids;
447 u32 x_min, x_max, y_min, y_max;
450 static const struct min_max_quirk min_max_pnpid_table[] = {
452 (const char * const []){"LEN0033", NULL},
453 {ANY_BOARD_ID, ANY_BOARD_ID},
454 1024, 5052, 2258, 4832
457 (const char * const []){"LEN0042", NULL},
458 {ANY_BOARD_ID, ANY_BOARD_ID},
459 1232, 5710, 1156, 4696
462 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
463 "LEN0039", "LEN2002", "LEN2004",
465 {ANY_BOARD_ID, 2961},
466 1024, 5112, 2024, 4832
469 (const char * const []){"LEN2000", NULL},
470 {ANY_BOARD_ID, ANY_BOARD_ID},
471 1024, 5113, 2021, 4832
474 (const char * const []){"LEN2001", NULL},
475 {ANY_BOARD_ID, ANY_BOARD_ID},
476 1024, 5022, 2508, 4832
479 (const char * const []){"LEN2006", NULL},
481 1024, 5045, 2457, 4832
484 (const char * const []){"LEN2006", NULL},
485 {ANY_BOARD_ID, ANY_BOARD_ID},
486 1264, 5675, 1171, 4688
491 /*****************************************************************************
492 * Synaptics communications functions
493 ****************************************************************************/
496 * Synaptics touchpads report the y coordinate from bottom to top, which is
497 * opposite from what userspace expects.
498 * This function is used to invert y before reporting.
500 static int synaptics_invert_y(int y)
502 return YMAX_NOMINAL + YMIN_NOMINAL - y;
506 * Apply quirk(s) if the hardware matches
508 static void synaptics_apply_quirks(struct psmouse *psmouse,
509 struct synaptics_device_info *info)
513 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
514 if (!psmouse_matches_pnp_id(psmouse,
515 min_max_pnpid_table[i].pnp_ids))
518 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
519 info->board_id < min_max_pnpid_table[i].board_id.min)
522 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
523 info->board_id > min_max_pnpid_table[i].board_id.max)
526 info->x_min = min_max_pnpid_table[i].x_min;
527 info->x_max = min_max_pnpid_table[i].x_max;
528 info->y_min = min_max_pnpid_table[i].y_min;
529 info->y_max = min_max_pnpid_table[i].y_max;
530 psmouse_info(psmouse,
531 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
532 info->x_min, info->x_max,
533 info->y_min, info->y_max);
538 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
540 static u8 param = 0xc8;
541 struct synaptics_data *priv = psmouse->private;
544 if (!(SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
545 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)))
548 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL);
552 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
556 /* Advanced gesture mode also sends multi finger data */
557 priv->info.capabilities |= BIT(1);
562 static int synaptics_set_mode(struct psmouse *psmouse)
564 struct synaptics_data *priv = psmouse->private;
568 if (priv->absolute_mode)
569 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
570 if (priv->disable_gesture)
571 priv->mode |= SYN_BIT_DISABLE_GESTURE;
572 if (psmouse->rate >= 80)
573 priv->mode |= SYN_BIT_HIGH_RATE;
574 if (SYN_CAP_EXTENDED(priv->info.capabilities))
575 priv->mode |= SYN_BIT_W_MODE;
577 error = synaptics_mode_cmd(psmouse, priv->mode);
581 if (priv->absolute_mode) {
582 error = synaptics_set_advanced_gesture_mode(psmouse);
585 "Advanced gesture mode init failed: %d\n",
594 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
596 struct synaptics_data *priv = psmouse->private;
599 priv->mode |= SYN_BIT_HIGH_RATE;
602 priv->mode &= ~SYN_BIT_HIGH_RATE;
606 synaptics_mode_cmd(psmouse, priv->mode);
609 /*****************************************************************************
610 * Synaptics pass-through PS/2 port support
611 ****************************************************************************/
612 static int synaptics_pt_write(struct serio *serio, u8 c)
614 struct psmouse *parent = serio_get_drvdata(serio->parent);
615 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
618 error = psmouse_sliced_command(parent, c);
622 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
629 static int synaptics_pt_start(struct serio *serio)
631 struct psmouse *parent = serio_get_drvdata(serio->parent);
632 struct synaptics_data *priv = parent->private;
634 serio_pause_rx(parent->ps2dev.serio);
635 priv->pt_port = serio;
636 serio_continue_rx(parent->ps2dev.serio);
641 static void synaptics_pt_stop(struct serio *serio)
643 struct psmouse *parent = serio_get_drvdata(serio->parent);
644 struct synaptics_data *priv = parent->private;
646 serio_pause_rx(parent->ps2dev.serio);
647 priv->pt_port = NULL;
648 serio_continue_rx(parent->ps2dev.serio);
651 static int synaptics_is_pt_packet(u8 *buf)
653 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
656 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
658 struct psmouse *child = serio_get_drvdata(ptport);
660 if (child && child->state == PSMOUSE_ACTIVATED) {
661 serio_interrupt(ptport, packet[1], 0);
662 serio_interrupt(ptport, packet[4], 0);
663 serio_interrupt(ptport, packet[5], 0);
664 if (child->pktsize == 4)
665 serio_interrupt(ptport, packet[2], 0);
667 serio_interrupt(ptport, packet[1], 0);
671 static void synaptics_pt_activate(struct psmouse *psmouse)
673 struct synaptics_data *priv = psmouse->private;
674 struct psmouse *child = serio_get_drvdata(priv->pt_port);
676 /* adjust the touchpad to child's choice of protocol */
678 if (child->pktsize == 4)
679 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
681 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
683 if (synaptics_mode_cmd(psmouse, priv->mode))
684 psmouse_warn(psmouse,
685 "failed to switch guest protocol\n");
689 static void synaptics_pt_create(struct psmouse *psmouse)
693 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
696 "not enough memory for pass-through port\n");
700 serio->id.type = SERIO_PS_PSTHRU;
701 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
702 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
703 serio->write = synaptics_pt_write;
704 serio->start = synaptics_pt_start;
705 serio->stop = synaptics_pt_stop;
706 serio->parent = psmouse->ps2dev.serio;
708 psmouse->pt_activate = synaptics_pt_activate;
710 psmouse_info(psmouse, "serio: %s port at %s\n",
711 serio->name, psmouse->phys);
712 serio_register_port(serio);
715 /*****************************************************************************
716 * Functions to interpret the absolute mode packets
717 ****************************************************************************/
719 static void synaptics_parse_agm(const u8 buf[],
720 struct synaptics_data *priv,
721 struct synaptics_hw_state *hw)
723 struct synaptics_hw_state *agm = &priv->agm;
726 agm_packet_type = (buf[5] & 0x30) >> 4;
727 switch (agm_packet_type) {
729 /* Gesture packet: (x, y, z) half resolution */
731 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
732 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
733 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
737 /* AGM-CONTACT packet: we are only interested in the count */
738 priv->agm_count = buf[1];
746 static void synaptics_parse_ext_buttons(const u8 buf[],
747 struct synaptics_data *priv,
748 struct synaptics_hw_state *hw)
750 unsigned int ext_bits =
751 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
752 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
754 hw->ext_buttons = buf[4] & ext_mask;
755 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
758 static int synaptics_parse_hw_state(const u8 buf[],
759 struct synaptics_data *priv,
760 struct synaptics_hw_state *hw)
762 memset(hw, 0, sizeof(struct synaptics_hw_state));
764 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
765 hw->w = (((buf[0] & 0x30) >> 2) |
766 ((buf[0] & 0x04) >> 1) |
767 ((buf[3] & 0x04) >> 2));
769 if ((SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
770 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)) &&
772 synaptics_parse_agm(buf, priv, hw);
776 hw->x = (((buf[3] & 0x10) << 8) |
777 ((buf[1] & 0x0f) << 8) |
779 hw->y = (((buf[3] & 0x20) << 7) |
780 ((buf[1] & 0xf0) << 4) |
784 hw->left = (buf[0] & 0x01) ? 1 : 0;
785 hw->right = (buf[0] & 0x02) ? 1 : 0;
787 if (priv->is_forcepad) {
789 * ForcePads, like Clickpads, use middle button
790 * bits to report primary button clicks.
791 * Unfortunately they report primary button not
792 * only when user presses on the pad above certain
793 * threshold, but also when there are more than one
794 * finger on the touchpad, which interferes with
795 * out multi-finger gestures.
799 priv->press = priv->report_press = false;
800 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
802 * Single-finger touch with pressure above
803 * the threshold. If pressure stays long
804 * enough, we'll start reporting primary
805 * button. We rely on the device continuing
806 * sending data even if finger does not
810 priv->press_start = jiffies;
812 } else if (time_after(jiffies,
814 msecs_to_jiffies(50))) {
815 priv->report_press = true;
821 hw->left = priv->report_press;
823 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
825 * Clickpad's button is transmitted as middle button,
826 * however, since it is primary button, we will report
829 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
831 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
832 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
834 hw->scroll = (s8)buf[1];
837 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
838 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
839 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
842 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
843 ((buf[0] ^ buf[3]) & 0x02)) {
844 synaptics_parse_ext_buttons(buf, priv, hw);
847 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
848 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
850 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
851 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
853 hw->left = (buf[0] & 0x01) ? 1 : 0;
854 hw->right = (buf[0] & 0x02) ? 1 : 0;
858 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
859 * is used by some firmware to indicate a finger at the edge of
860 * the touchpad whose precise position cannot be determined, so
861 * convert these values to the maximum axis value.
863 if (hw->x > X_MAX_POSITIVE)
864 hw->x -= 1 << ABS_POS_BITS;
865 else if (hw->x == X_MAX_POSITIVE)
868 if (hw->y > Y_MAX_POSITIVE)
869 hw->y -= 1 << ABS_POS_BITS;
870 else if (hw->y == Y_MAX_POSITIVE)
876 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
877 bool active, int x, int y)
879 input_mt_slot(dev, slot);
880 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
882 input_report_abs(dev, ABS_MT_POSITION_X, x);
883 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
887 static void synaptics_report_semi_mt_data(struct input_dev *dev,
888 const struct synaptics_hw_state *a,
889 const struct synaptics_hw_state *b,
892 if (num_fingers >= 2) {
893 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
895 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
897 } else if (num_fingers == 1) {
898 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
899 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
901 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
902 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
906 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
907 const struct synaptics_hw_state *hw)
909 struct input_dev *dev = psmouse->dev;
910 struct synaptics_data *priv = psmouse->private;
911 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
914 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
917 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
918 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
919 SYN_ID_FULL(priv->info.identity) == 0x802) &&
920 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
923 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
924 for (i = 0; i < ext_bits; i++) {
925 input_report_key(dev, BTN_0 + 2 * i,
926 hw->ext_buttons & BIT(i));
927 input_report_key(dev, BTN_1 + 2 * i,
928 hw->ext_buttons & BIT(i + ext_bits));
934 * This generation of touchpads has the trackstick buttons
935 * physically wired to the touchpad. Re-route them through
936 * the pass-through interface.
941 /* The trackstick expects at most 3 buttons */
942 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
943 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
944 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
946 serio_interrupt(priv->pt_port,
947 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
948 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
952 static void synaptics_report_buttons(struct psmouse *psmouse,
953 const struct synaptics_hw_state *hw)
955 struct input_dev *dev = psmouse->dev;
956 struct synaptics_data *priv = psmouse->private;
958 input_report_key(dev, BTN_LEFT, hw->left);
959 input_report_key(dev, BTN_RIGHT, hw->right);
961 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
962 input_report_key(dev, BTN_MIDDLE, hw->middle);
964 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
965 input_report_key(dev, BTN_FORWARD, hw->up);
966 input_report_key(dev, BTN_BACK, hw->down);
969 synaptics_report_ext_buttons(psmouse, hw);
972 static void synaptics_report_mt_data(struct psmouse *psmouse,
973 const struct synaptics_hw_state *sgm,
976 struct input_dev *dev = psmouse->dev;
977 struct synaptics_data *priv = psmouse->private;
978 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
979 struct input_mt_pos pos[2];
980 int slot[2], nsemi, i;
982 nsemi = clamp_val(num_fingers, 0, 2);
984 for (i = 0; i < nsemi; i++) {
986 pos[i].y = synaptics_invert_y(hw[i]->y);
989 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
991 for (i = 0; i < nsemi; i++) {
992 input_mt_slot(dev, slot[i]);
993 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
994 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
995 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
996 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
999 input_mt_drop_unused(dev);
1001 /* Don't use active slot count to generate BTN_TOOL events. */
1002 input_mt_report_pointer_emulation(dev, false);
1004 /* Send the number of fingers reported by touchpad itself. */
1005 input_mt_report_finger_count(dev, num_fingers);
1007 synaptics_report_buttons(psmouse, sgm);
1012 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1013 struct synaptics_hw_state *sgm)
1015 struct synaptics_data *priv = psmouse->private;
1019 * Update mt_state using the new finger count and current mt_state.
1023 else if (sgm->w >= 4)
1025 else if (sgm->w == 0)
1027 else if (sgm->w == 1)
1028 num_fingers = priv->agm_count ? priv->agm_count : 3;
1032 /* Send resulting input events to user space */
1033 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1037 * called for each full received packet from the touchpad
1039 static void synaptics_process_packet(struct psmouse *psmouse)
1041 struct input_dev *dev = psmouse->dev;
1042 struct synaptics_data *priv = psmouse->private;
1043 struct synaptics_device_info *info = &priv->info;
1044 struct synaptics_hw_state hw;
1048 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1051 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1052 synaptics_image_sensor_process(psmouse, &hw);
1057 priv->scroll += hw.scroll;
1059 while (priv->scroll >= 4) {
1060 input_report_key(dev, BTN_BACK, !hw.down);
1062 input_report_key(dev, BTN_BACK, hw.down);
1066 while (priv->scroll <= -4) {
1067 input_report_key(dev, BTN_FORWARD, !hw.up);
1069 input_report_key(dev, BTN_FORWARD, hw.up);
1076 if (hw.z > 0 && hw.x > 1) {
1079 if (SYN_CAP_EXTENDED(info->capabilities)) {
1082 if (SYN_CAP_MULTIFINGER(info->capabilities))
1083 num_fingers = hw.w + 2;
1086 if (SYN_MODEL_PEN(info->model_id))
1087 ; /* Nothing, treat a pen as a single finger */
1090 if (SYN_CAP_PALMDETECT(info->capabilities))
1091 finger_width = hw.w;
1100 if (cr48_profile_sensor) {
1101 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1105 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1106 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1110 * BTN_TOUCH has to be first as mousedev relies on it when doing
1111 * absolute -> relative conversion
1113 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1114 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1116 if (num_fingers > 0) {
1117 input_report_abs(dev, ABS_X, hw.x);
1118 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1120 input_report_abs(dev, ABS_PRESSURE, hw.z);
1122 if (SYN_CAP_PALMDETECT(info->capabilities))
1123 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1125 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1126 if (SYN_CAP_MULTIFINGER(info->capabilities)) {
1127 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1128 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1131 synaptics_report_buttons(psmouse, &hw);
1136 static bool synaptics_validate_byte(struct psmouse *psmouse,
1137 int idx, enum synaptics_pkt_type pkt_type)
1139 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1140 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1141 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1142 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1143 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1144 const u8 *packet = psmouse->packet;
1146 if (idx < 0 || idx > 4)
1152 case SYN_NEWABS_RELAXED:
1153 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1155 case SYN_NEWABS_STRICT:
1156 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1159 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1162 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1167 static enum synaptics_pkt_type
1168 synaptics_detect_pkt_type(struct psmouse *psmouse)
1172 for (i = 0; i < 5; i++) {
1173 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1174 psmouse_info(psmouse, "using relaxed packet validation\n");
1175 return SYN_NEWABS_RELAXED;
1179 return SYN_NEWABS_STRICT;
1182 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1184 struct synaptics_data *priv = psmouse->private;
1186 if (psmouse->pktcnt >= 6) { /* Full packet received */
1187 if (unlikely(priv->pkt_type == SYN_NEWABS))
1188 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1190 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1191 synaptics_is_pt_packet(psmouse->packet)) {
1193 synaptics_pass_pt_packet(priv->pt_port,
1196 synaptics_process_packet(psmouse);
1198 return PSMOUSE_FULL_PACKET;
1201 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1202 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1205 /*****************************************************************************
1206 * Driver initialization/cleanup functions
1207 ****************************************************************************/
1208 static void set_abs_position_params(struct input_dev *dev,
1209 struct synaptics_device_info *info,
1210 int x_code, int y_code)
1212 int x_min = info->x_min ?: XMIN_NOMINAL;
1213 int x_max = info->x_max ?: XMAX_NOMINAL;
1214 int y_min = info->y_min ?: YMIN_NOMINAL;
1215 int y_max = info->y_max ?: YMAX_NOMINAL;
1216 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1217 SYN_REDUCED_FILTER_FUZZ : 0;
1219 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1220 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1221 input_abs_set_res(dev, x_code, info->x_res);
1222 input_abs_set_res(dev, y_code, info->y_res);
1225 static void set_input_params(struct psmouse *psmouse,
1226 struct synaptics_data *priv)
1228 struct input_dev *dev = psmouse->dev;
1229 struct synaptics_device_info *info = &priv->info;
1232 /* Things that apply to both modes */
1233 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1234 __set_bit(EV_KEY, dev->evbit);
1235 __set_bit(BTN_LEFT, dev->keybit);
1236 __set_bit(BTN_RIGHT, dev->keybit);
1238 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1239 __set_bit(BTN_MIDDLE, dev->keybit);
1241 if (!priv->absolute_mode) {
1243 __set_bit(EV_REL, dev->evbit);
1244 __set_bit(REL_X, dev->relbit);
1245 __set_bit(REL_Y, dev->relbit);
1250 __set_bit(EV_ABS, dev->evbit);
1251 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1252 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1254 if (cr48_profile_sensor)
1255 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1257 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1258 set_abs_position_params(dev, info,
1259 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1260 /* Image sensors can report per-contact pressure */
1261 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1262 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
1264 /* Image sensors can signal 4 and 5 finger clicks */
1265 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1266 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1267 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1268 set_abs_position_params(dev, info,
1269 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1271 * Profile sensor in CR-48 tracks contacts reasonably well,
1272 * other non-image sensors with AGM use semi-mt.
1274 input_mt_init_slots(dev, 2,
1276 (cr48_profile_sensor ?
1277 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1280 if (SYN_CAP_PALMDETECT(info->capabilities))
1281 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1283 __set_bit(BTN_TOUCH, dev->keybit);
1284 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1286 if (SYN_CAP_MULTIFINGER(info->capabilities)) {
1287 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1288 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1291 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1292 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1293 __set_bit(BTN_FORWARD, dev->keybit);
1294 __set_bit(BTN_BACK, dev->keybit);
1297 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1298 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1299 __set_bit(BTN_0 + i, dev->keybit);
1301 __clear_bit(EV_REL, dev->evbit);
1302 __clear_bit(REL_X, dev->relbit);
1303 __clear_bit(REL_Y, dev->relbit);
1305 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1306 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1307 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1308 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1309 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1310 /* Clickpads report only left button */
1311 __clear_bit(BTN_RIGHT, dev->keybit);
1312 __clear_bit(BTN_MIDDLE, dev->keybit);
1316 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1317 void *data, char *buf)
1319 struct synaptics_data *priv = psmouse->private;
1321 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1324 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1325 void *data, const char *buf,
1328 struct synaptics_data *priv = psmouse->private;
1332 err = kstrtouint(buf, 10, &value);
1339 if (value == priv->disable_gesture)
1342 priv->disable_gesture = value;
1344 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1346 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1348 if (synaptics_mode_cmd(psmouse, priv->mode))
1354 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1355 synaptics_show_disable_gesture,
1356 synaptics_set_disable_gesture);
1358 static void synaptics_disconnect(struct psmouse *psmouse)
1360 struct synaptics_data *priv = psmouse->private;
1363 * We might have left a breadcrumb when trying to
1364 * set up SMbus companion.
1366 psmouse_smbus_cleanup(psmouse);
1368 if (!priv->absolute_mode &&
1369 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1370 device_remove_file(&psmouse->ps2dev.serio->dev,
1371 &psmouse_attr_disable_gesture.dattr);
1373 synaptics_reset(psmouse);
1375 psmouse->private = NULL;
1378 static int synaptics_reconnect(struct psmouse *psmouse)
1380 struct synaptics_data *priv = psmouse->private;
1381 struct synaptics_device_info info;
1387 psmouse_reset(psmouse);
1390 * On some boxes, right after resuming, the touchpad
1391 * needs some time to finish initializing (I assume
1392 * it needs time to calibrate) and start responding
1393 * to Synaptics-specific queries, so let's wait a
1398 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1399 error = synaptics_detect(psmouse, 0);
1400 } while (error && ++retry < 3);
1406 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1408 error = synaptics_query_hardware(psmouse, &info);
1410 psmouse_err(psmouse, "Unable to query device.\n");
1414 error = synaptics_set_mode(psmouse);
1416 psmouse_err(psmouse, "Unable to initialize device.\n");
1420 if (info.identity != priv->info.identity ||
1421 info.model_id != priv->info.model_id ||
1422 info.capabilities != priv->info.capabilities ||
1423 info.ext_cap != priv->info.ext_cap) {
1424 psmouse_err(psmouse,
1425 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1426 priv->info.identity, info.identity,
1427 priv->info.model_id, info.model_id,
1428 priv->info.capabilities, info.capabilities,
1429 priv->info.ext_cap, info.ext_cap);
1436 static bool impaired_toshiba_kbc;
1438 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1439 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1441 /* Toshiba Satellite */
1443 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1444 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1448 /* Toshiba Dynabook */
1450 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1451 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1455 /* Toshiba Portege M300 */
1457 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1458 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1463 /* Toshiba Portege M300 */
1465 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1466 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1467 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1475 static bool broken_olpc_ec;
1477 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1478 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1480 /* OLPC XO-1 or XO-1.5 */
1482 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1483 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1490 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1491 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1493 /* Cr-48 Chromebook (Codename Mario) */
1495 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1496 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1503 void __init synaptics_module_init(void)
1505 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1506 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1507 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1510 static int synaptics_init_ps2(struct psmouse *psmouse,
1511 struct synaptics_device_info *info,
1514 struct synaptics_data *priv;
1517 synaptics_apply_quirks(psmouse, info);
1519 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1524 priv->absolute_mode = absolute_mode;
1525 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1526 priv->disable_gesture = true;
1529 * Unfortunately ForcePad capability is not exported over PS/2,
1530 * so we have to resort to checking PNP IDs.
1532 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1534 err = synaptics_set_mode(psmouse);
1536 psmouse_err(psmouse, "Unable to initialize device.\n");
1540 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1541 SYN_NEWABS : SYN_OLDABS;
1543 psmouse_info(psmouse,
1544 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1545 SYN_ID_MODEL(info->identity),
1546 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1548 info->capabilities, info->ext_cap, info->ext_cap_0c,
1549 info->ext_cap_10, info->board_id, info->firmware_id);
1551 set_input_params(psmouse, priv);
1554 * Encode touchpad model so that it can be used to set
1555 * input device->id.version and be visible to userspace.
1556 * Because version is __u16 we have to drop something.
1557 * Hardware info bits seem to be good candidates as they
1558 * are documented to be for Synaptics corp. internal use.
1560 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1561 (info->model_id & 0x000000ff);
1563 if (absolute_mode) {
1564 psmouse->protocol_handler = synaptics_process_byte;
1565 psmouse->pktsize = 6;
1567 /* Relative mode follows standard PS/2 mouse protocol */
1568 psmouse->protocol_handler = psmouse_process_byte;
1569 psmouse->pktsize = 3;
1572 psmouse->set_rate = synaptics_set_rate;
1573 psmouse->disconnect = synaptics_disconnect;
1574 psmouse->reconnect = synaptics_reconnect;
1575 psmouse->cleanup = synaptics_reset;
1576 /* Synaptics can usually stay in sync without extra help */
1577 psmouse->resync_time = 0;
1579 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1580 synaptics_pt_create(psmouse);
1583 * Toshiba's KBC seems to have trouble handling data from
1584 * Synaptics at full rate. Switch to a lower rate (roughly
1585 * the same rate as a standard PS/2 mouse).
1587 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1588 psmouse_info(psmouse,
1589 "Toshiba %s detected, limiting rate to 40pps.\n",
1590 dmi_get_system_info(DMI_PRODUCT_NAME));
1594 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1595 err = device_create_file(&psmouse->ps2dev.serio->dev,
1596 &psmouse_attr_disable_gesture.dattr);
1598 psmouse_err(psmouse,
1599 "Failed to create disable_gesture attribute (%d)",
1612 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1614 struct synaptics_device_info info;
1617 psmouse_reset(psmouse);
1619 error = synaptics_query_hardware(psmouse, &info);
1621 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1625 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1628 int synaptics_init_absolute(struct psmouse *psmouse)
1630 return __synaptics_init(psmouse, true);
1633 int synaptics_init_relative(struct psmouse *psmouse)
1635 return __synaptics_init(psmouse, false);
1638 static int synaptics_setup_ps2(struct psmouse *psmouse,
1639 struct synaptics_device_info *info)
1641 bool absolute_mode = true;
1645 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1646 * packet spew overloads the EC such that key presses on the keyboard
1647 * are missed. Given that, don't even attempt to use Absolute mode.
1648 * Relative mode seems to work just fine.
1650 if (broken_olpc_ec) {
1651 psmouse_info(psmouse,
1652 "OLPC XO detected, forcing relative protocol.\n");
1653 absolute_mode = false;
1656 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1660 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1663 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1665 void __init synaptics_module_init(void)
1669 static int __maybe_unused
1670 synaptics_setup_ps2(struct psmouse *psmouse,
1671 struct synaptics_device_info *info)
1676 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1678 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1681 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1682 * provides a better bandwidth and allow a better control of the touchpads.
1683 * This is used to decide if we need to use this bus or not.
1686 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1687 SYNAPTICS_INTERTOUCH_OFF,
1688 SYNAPTICS_INTERTOUCH_ON,
1691 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1692 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1693 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1694 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1696 static int synaptics_create_intertouch(struct psmouse *psmouse,
1697 struct synaptics_device_info *info,
1698 bool leave_breadcrumbs)
1701 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1702 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1703 const struct rmi_device_platform_data pdata = {
1705 .sensor_type = rmi_sensor_touchpad,
1706 .axis_align.flip_y = true,
1707 /* to prevent cursors jumps: */
1708 .kernel_tracking = true,
1709 .topbuttonpad = topbuttonpad,
1712 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1713 .trackstick_buttons =
1714 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1717 const struct i2c_board_info intertouch_board = {
1718 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1719 .flags = I2C_CLIENT_HOST_NOTIFY,
1722 return psmouse_smbus_init(psmouse, &intertouch_board,
1723 &pdata, sizeof(pdata),
1728 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1729 * and decides to instantiate a SMBus InterTouch device.
1731 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1732 struct synaptics_device_info *info,
1733 bool leave_breadcrumbs)
1737 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1740 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1741 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1742 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1744 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1745 psmouse_info(psmouse,
1746 "Your touchpad (%s) says it can support a different bus. "
1747 "If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n",
1748 psmouse->ps2dev.serio->firmware_id);
1754 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1756 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1758 if (error == -EAGAIN)
1759 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1761 psmouse_err(psmouse, "unable to create intertouch device\n");
1769 int synaptics_init_smbus(struct psmouse *psmouse)
1771 struct synaptics_device_info info;
1774 psmouse_reset(psmouse);
1776 error = synaptics_query_hardware(psmouse, &info);
1778 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1782 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1785 return synaptics_create_intertouch(psmouse, &info, false);
1788 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1790 static int __maybe_unused
1791 synaptics_setup_intertouch(struct psmouse *psmouse,
1792 struct synaptics_device_info *info,
1793 bool leave_breadcrumbs)
1798 int synaptics_init_smbus(struct psmouse *psmouse)
1803 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1805 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1806 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1808 int synaptics_init(struct psmouse *psmouse)
1810 struct synaptics_device_info info;
1814 psmouse_reset(psmouse);
1816 error = synaptics_query_hardware(psmouse, &info);
1818 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1822 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1823 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1824 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1825 /* Forcepads need F21, which is not ready */
1826 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1827 psmouse_warn(psmouse,
1828 "The touchpad can support a better bus than the too old PS/2 protocol. "
1829 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1832 error = synaptics_setup_intertouch(psmouse, &info, true);
1834 return PSMOUSE_SYNAPTICS_SMBUS;
1837 retval = synaptics_setup_ps2(psmouse, &info);
1840 * Not using any flavor of Synaptics support, so clean up
1841 * SMbus breadcrumbs, if any.
1843 psmouse_smbus_cleanup(psmouse);
1849 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1851 int synaptics_init(struct psmouse *psmouse)
1856 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */