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;
104 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
105 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
108 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
110 if (param[1] != 0x47)
113 if (set_properties) {
114 psmouse->vendor = "Synaptics";
115 psmouse->name = "TouchPad";
121 void synaptics_reset(struct psmouse *psmouse)
123 /* reset touchpad back to relative mode, gestures enabled */
124 synaptics_mode_cmd(psmouse, 0);
127 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
128 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
130 /* This list has been kindly provided by Synaptics. */
131 static const char * const topbuttonpad_pnp_ids[] = {
141 "LEN0033", /* Helix */
142 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
143 "LEN0035", /* X240 */
144 "LEN0036", /* T440 */
145 "LEN0037", /* X1 Carbon 2nd */
147 "LEN0039", /* T440s */
149 "LEN0042", /* Yoga */
152 "LEN2000", /* S540 */
153 "LEN2001", /* Edge E431 */
154 "LEN2002", /* Edge E531 */
156 "LEN2004", /* L440 */
158 "LEN2006", /* Edge E440/E540 */
167 static const char * const smbus_pnp_ids[] = {
168 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
169 "LEN0048", /* X1 Carbon 3 */
170 "LEN0046", /* X250 */
171 "LEN0049", /* Yoga 11e */
172 "LEN004a", /* W541 */
174 "LEN005e", /* T560 */
175 "LEN006c", /* T470s */
176 "LEN007a", /* T470s */
177 "LEN0071", /* T480 */
178 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
179 "LEN0073", /* X1 Carbon G5 (Elantech) */
180 "LEN0091", /* X1 Carbon 6 */
181 "LEN0092", /* X1 Carbon 6 */
182 "LEN0093", /* T480 */
183 "LEN0096", /* X280 */
184 "LEN0097", /* X280 -> ALPS trackpoint */
185 "LEN0099", /* X1 Extreme 1st */
186 "LEN009b", /* T580 */
187 "LEN200f", /* T450s */
188 "LEN2044", /* L470 */
189 "LEN2054", /* E480 */
190 "LEN2055", /* E580 */
191 "SYN3052", /* HP EliteBook 840 G4 */
192 "SYN3221", /* HP 15-ay000 */
193 "SYN323d", /* HP Spectre X360 13-w013dx */
194 "SYN3257", /* HP Envy 13-ad105ng */
198 static const char * const forcepad_pnp_ids[] = {
205 * Send a command to the synpatics touchpad by special commands
207 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
211 error = psmouse_sliced_command(psmouse, cmd);
215 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
222 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
230 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
234 *val = be32_to_cpu(resp.be_val);
240 * See also the SYN_ID_* macros
242 static int synaptics_identify(struct psmouse *psmouse,
243 struct synaptics_device_info *info)
247 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
251 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
255 * Read the model-id bytes from the touchpad
256 * see also SYN_MODEL_* macros
258 static int synaptics_model_id(struct psmouse *psmouse,
259 struct synaptics_device_info *info)
261 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
265 * Read the firmware id from the touchpad
267 static int synaptics_firmware_id(struct psmouse *psmouse,
268 struct synaptics_device_info *info)
270 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
275 * Read the board id and the "More Extended Queries" from the touchpad
276 * The board id is encoded in the "QUERY MODES" response
278 static int synaptics_query_modes(struct psmouse *psmouse,
279 struct synaptics_device_info *info)
284 /* firmwares prior 7.5 have no board_id encoded */
285 if (SYN_ID_FULL(info->identity) < 0x705)
288 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
292 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
294 if (SYN_MEXT_CAP_BIT(bid[0]))
295 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
302 * Read the capability-bits from the touchpad
303 * see also the SYN_CAP_* macros
305 static int synaptics_capability(struct psmouse *psmouse,
306 struct synaptics_device_info *info)
310 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
311 &info->capabilities);
315 info->ext_cap = info->ext_cap_0c = 0;
318 * Older firmwares had submodel ID fixed to 0x47
320 if (SYN_ID_FULL(info->identity) < 0x705 &&
321 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
326 * Unless capExtended is set the rest of the flags should be ignored
328 if (!SYN_CAP_EXTENDED(info->capabilities))
329 info->capabilities = 0;
331 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
332 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
335 psmouse_warn(psmouse,
336 "device claims to have extended capabilities, but I'm not able to read them.\n");
339 * if nExtBtn is greater than 8 it should be considered
340 * invalid and treated as 0
342 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
343 info->ext_cap &= ~SYN_CAP_MB_MASK;
347 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
348 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
351 psmouse_warn(psmouse,
352 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
359 * Read touchpad resolution and maximum reported coordinates
360 * Resolution is left zero if touchpad does not support the query
362 static int synaptics_resolution(struct psmouse *psmouse,
363 struct synaptics_device_info *info)
368 if (SYN_ID_MAJOR(info->identity) < 4)
371 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
373 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
374 info->x_res = resp[0]; /* x resolution in units/mm */
375 info->y_res = resp[2]; /* y resolution in units/mm */
379 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
380 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
381 error = synaptics_send_cmd(psmouse,
382 SYN_QUE_EXT_MAX_COORDS, resp);
384 psmouse_warn(psmouse,
385 "device claims to have max coordinates query, but I'm not able to read it.\n");
387 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
388 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
389 psmouse_info(psmouse,
390 "queried max coordinates: x [..%d], y [..%d]\n",
391 info->x_max, info->y_max);
395 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
396 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
398 * Firmware v8.1 does not report proper number of extended
399 * capabilities, but has been proven to report correct min
402 SYN_ID_FULL(info->identity) == 0x801)) {
403 error = synaptics_send_cmd(psmouse,
404 SYN_QUE_EXT_MIN_COORDS, resp);
406 psmouse_warn(psmouse,
407 "device claims to have min coordinates query, but I'm not able to read it.\n");
409 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
410 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
411 psmouse_info(psmouse,
412 "queried min coordinates: x [%d..], y [%d..]\n",
413 info->x_min, info->y_min);
420 static int synaptics_query_hardware(struct psmouse *psmouse,
421 struct synaptics_device_info *info)
425 memset(info, 0, sizeof(*info));
427 error = synaptics_identify(psmouse, info);
431 error = synaptics_model_id(psmouse, info);
435 error = synaptics_firmware_id(psmouse, info);
439 error = synaptics_query_modes(psmouse, info);
443 error = synaptics_capability(psmouse, info);
447 error = synaptics_resolution(psmouse, info);
454 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
456 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
458 static bool cr48_profile_sensor;
460 #define ANY_BOARD_ID 0
461 struct min_max_quirk {
462 const char * const *pnp_ids;
466 u32 x_min, x_max, y_min, y_max;
469 static const struct min_max_quirk min_max_pnpid_table[] = {
471 (const char * const []){"LEN0033", NULL},
472 {ANY_BOARD_ID, ANY_BOARD_ID},
473 1024, 5052, 2258, 4832
476 (const char * const []){"LEN0042", NULL},
477 {ANY_BOARD_ID, ANY_BOARD_ID},
478 1232, 5710, 1156, 4696
481 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
482 "LEN0039", "LEN2002", "LEN2004",
484 {ANY_BOARD_ID, 2961},
485 1024, 5112, 2024, 4832
488 (const char * const []){"LEN2000", NULL},
489 {ANY_BOARD_ID, ANY_BOARD_ID},
490 1024, 5113, 2021, 4832
493 (const char * const []){"LEN2001", NULL},
494 {ANY_BOARD_ID, ANY_BOARD_ID},
495 1024, 5022, 2508, 4832
498 (const char * const []){"LEN2006", NULL},
500 1024, 5045, 2457, 4832
503 (const char * const []){"LEN2006", NULL},
504 {ANY_BOARD_ID, ANY_BOARD_ID},
505 1264, 5675, 1171, 4688
510 /*****************************************************************************
511 * Synaptics communications functions
512 ****************************************************************************/
515 * Synaptics touchpads report the y coordinate from bottom to top, which is
516 * opposite from what userspace expects.
517 * This function is used to invert y before reporting.
519 static int synaptics_invert_y(int y)
521 return YMAX_NOMINAL + YMIN_NOMINAL - y;
525 * Apply quirk(s) if the hardware matches
527 static void synaptics_apply_quirks(struct psmouse *psmouse,
528 struct synaptics_device_info *info)
532 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
533 if (!psmouse_matches_pnp_id(psmouse,
534 min_max_pnpid_table[i].pnp_ids))
537 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
538 info->board_id < min_max_pnpid_table[i].board_id.min)
541 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
542 info->board_id > min_max_pnpid_table[i].board_id.max)
545 info->x_min = min_max_pnpid_table[i].x_min;
546 info->x_max = min_max_pnpid_table[i].x_max;
547 info->y_min = min_max_pnpid_table[i].y_min;
548 info->y_max = min_max_pnpid_table[i].y_max;
549 psmouse_info(psmouse,
550 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
551 info->x_min, info->x_max,
552 info->y_min, info->y_max);
557 static bool synaptics_has_agm(struct synaptics_data *priv)
559 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
560 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
563 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
565 static u8 param = 0xc8;
568 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL);
572 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
579 static int synaptics_set_mode(struct psmouse *psmouse)
581 struct synaptics_data *priv = psmouse->private;
585 if (priv->absolute_mode)
586 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
587 if (priv->disable_gesture)
588 priv->mode |= SYN_BIT_DISABLE_GESTURE;
589 if (psmouse->rate >= 80)
590 priv->mode |= SYN_BIT_HIGH_RATE;
591 if (SYN_CAP_EXTENDED(priv->info.capabilities))
592 priv->mode |= SYN_BIT_W_MODE;
594 error = synaptics_mode_cmd(psmouse, priv->mode);
598 if (priv->absolute_mode && synaptics_has_agm(priv)) {
599 error = synaptics_set_advanced_gesture_mode(psmouse);
602 "Advanced gesture mode init failed: %d\n",
611 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
613 struct synaptics_data *priv = psmouse->private;
616 priv->mode |= SYN_BIT_HIGH_RATE;
619 priv->mode &= ~SYN_BIT_HIGH_RATE;
623 synaptics_mode_cmd(psmouse, priv->mode);
626 /*****************************************************************************
627 * Synaptics pass-through PS/2 port support
628 ****************************************************************************/
629 static int synaptics_pt_write(struct serio *serio, u8 c)
631 struct psmouse *parent = serio_get_drvdata(serio->parent);
632 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
635 error = psmouse_sliced_command(parent, c);
639 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
646 static int synaptics_pt_start(struct serio *serio)
648 struct psmouse *parent = serio_get_drvdata(serio->parent);
649 struct synaptics_data *priv = parent->private;
651 serio_pause_rx(parent->ps2dev.serio);
652 priv->pt_port = serio;
653 serio_continue_rx(parent->ps2dev.serio);
658 static void synaptics_pt_stop(struct serio *serio)
660 struct psmouse *parent = serio_get_drvdata(serio->parent);
661 struct synaptics_data *priv = parent->private;
663 serio_pause_rx(parent->ps2dev.serio);
664 priv->pt_port = NULL;
665 serio_continue_rx(parent->ps2dev.serio);
668 static int synaptics_is_pt_packet(u8 *buf)
670 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
673 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
675 struct psmouse *child = serio_get_drvdata(ptport);
677 if (child && child->state == PSMOUSE_ACTIVATED) {
678 serio_interrupt(ptport, packet[1], 0);
679 serio_interrupt(ptport, packet[4], 0);
680 serio_interrupt(ptport, packet[5], 0);
681 if (child->pktsize == 4)
682 serio_interrupt(ptport, packet[2], 0);
684 serio_interrupt(ptport, packet[1], 0);
688 static void synaptics_pt_activate(struct psmouse *psmouse)
690 struct synaptics_data *priv = psmouse->private;
691 struct psmouse *child = serio_get_drvdata(priv->pt_port);
693 /* adjust the touchpad to child's choice of protocol */
695 if (child->pktsize == 4)
696 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
698 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
700 if (synaptics_mode_cmd(psmouse, priv->mode))
701 psmouse_warn(psmouse,
702 "failed to switch guest protocol\n");
706 static void synaptics_pt_create(struct psmouse *psmouse)
710 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
713 "not enough memory for pass-through port\n");
717 serio->id.type = SERIO_PS_PSTHRU;
718 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
719 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
720 serio->write = synaptics_pt_write;
721 serio->start = synaptics_pt_start;
722 serio->stop = synaptics_pt_stop;
723 serio->parent = psmouse->ps2dev.serio;
725 psmouse->pt_activate = synaptics_pt_activate;
727 psmouse_info(psmouse, "serio: %s port at %s\n",
728 serio->name, psmouse->phys);
729 serio_register_port(serio);
732 /*****************************************************************************
733 * Functions to interpret the absolute mode packets
734 ****************************************************************************/
736 static void synaptics_parse_agm(const u8 buf[],
737 struct synaptics_data *priv,
738 struct synaptics_hw_state *hw)
740 struct synaptics_hw_state *agm = &priv->agm;
743 agm_packet_type = (buf[5] & 0x30) >> 4;
744 switch (agm_packet_type) {
746 /* Gesture packet: (x, y, z) half resolution */
748 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
749 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
750 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
754 /* AGM-CONTACT packet: we are only interested in the count */
755 priv->agm_count = buf[1];
763 static void synaptics_parse_ext_buttons(const u8 buf[],
764 struct synaptics_data *priv,
765 struct synaptics_hw_state *hw)
767 unsigned int ext_bits =
768 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
769 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
771 hw->ext_buttons = buf[4] & ext_mask;
772 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
775 static int synaptics_parse_hw_state(const u8 buf[],
776 struct synaptics_data *priv,
777 struct synaptics_hw_state *hw)
779 memset(hw, 0, sizeof(struct synaptics_hw_state));
781 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
782 hw->w = (((buf[0] & 0x30) >> 2) |
783 ((buf[0] & 0x04) >> 1) |
784 ((buf[3] & 0x04) >> 2));
786 if (synaptics_has_agm(priv) && hw->w == 2) {
787 synaptics_parse_agm(buf, priv, hw);
791 hw->x = (((buf[3] & 0x10) << 8) |
792 ((buf[1] & 0x0f) << 8) |
794 hw->y = (((buf[3] & 0x20) << 7) |
795 ((buf[1] & 0xf0) << 4) |
799 hw->left = (buf[0] & 0x01) ? 1 : 0;
800 hw->right = (buf[0] & 0x02) ? 1 : 0;
802 if (priv->is_forcepad) {
804 * ForcePads, like Clickpads, use middle button
805 * bits to report primary button clicks.
806 * Unfortunately they report primary button not
807 * only when user presses on the pad above certain
808 * threshold, but also when there are more than one
809 * finger on the touchpad, which interferes with
810 * out multi-finger gestures.
814 priv->press = priv->report_press = false;
815 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
817 * Single-finger touch with pressure above
818 * the threshold. If pressure stays long
819 * enough, we'll start reporting primary
820 * button. We rely on the device continuing
821 * sending data even if finger does not
825 priv->press_start = jiffies;
827 } else if (time_after(jiffies,
829 msecs_to_jiffies(50))) {
830 priv->report_press = true;
836 hw->left = priv->report_press;
838 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
840 * Clickpad's button is transmitted as middle button,
841 * however, since it is primary button, we will report
844 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
846 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
847 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
849 hw->scroll = (s8)buf[1];
852 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
853 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
854 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
857 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
858 ((buf[0] ^ buf[3]) & 0x02)) {
859 synaptics_parse_ext_buttons(buf, priv, hw);
862 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
863 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
865 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
866 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
868 hw->left = (buf[0] & 0x01) ? 1 : 0;
869 hw->right = (buf[0] & 0x02) ? 1 : 0;
873 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
874 * is used by some firmware to indicate a finger at the edge of
875 * the touchpad whose precise position cannot be determined, so
876 * convert these values to the maximum axis value.
878 if (hw->x > X_MAX_POSITIVE)
879 hw->x -= 1 << ABS_POS_BITS;
880 else if (hw->x == X_MAX_POSITIVE)
883 if (hw->y > Y_MAX_POSITIVE)
884 hw->y -= 1 << ABS_POS_BITS;
885 else if (hw->y == Y_MAX_POSITIVE)
891 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
892 bool active, int x, int y)
894 input_mt_slot(dev, slot);
895 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
897 input_report_abs(dev, ABS_MT_POSITION_X, x);
898 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
902 static void synaptics_report_semi_mt_data(struct input_dev *dev,
903 const struct synaptics_hw_state *a,
904 const struct synaptics_hw_state *b,
907 if (num_fingers >= 2) {
908 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
910 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
912 } else if (num_fingers == 1) {
913 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
914 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
916 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
917 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
921 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
922 const struct synaptics_hw_state *hw)
924 struct input_dev *dev = psmouse->dev;
925 struct synaptics_data *priv = psmouse->private;
926 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
929 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
932 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
933 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
934 SYN_ID_FULL(priv->info.identity) == 0x802) &&
935 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
938 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
939 for (i = 0; i < ext_bits; i++) {
940 input_report_key(dev, BTN_0 + 2 * i,
941 hw->ext_buttons & BIT(i));
942 input_report_key(dev, BTN_1 + 2 * i,
943 hw->ext_buttons & BIT(i + ext_bits));
949 * This generation of touchpads has the trackstick buttons
950 * physically wired to the touchpad. Re-route them through
951 * the pass-through interface.
956 /* The trackstick expects at most 3 buttons */
957 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
958 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
959 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
961 serio_interrupt(priv->pt_port,
962 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
963 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
967 static void synaptics_report_buttons(struct psmouse *psmouse,
968 const struct synaptics_hw_state *hw)
970 struct input_dev *dev = psmouse->dev;
971 struct synaptics_data *priv = psmouse->private;
973 input_report_key(dev, BTN_LEFT, hw->left);
974 input_report_key(dev, BTN_RIGHT, hw->right);
976 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
977 input_report_key(dev, BTN_MIDDLE, hw->middle);
979 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
980 input_report_key(dev, BTN_FORWARD, hw->up);
981 input_report_key(dev, BTN_BACK, hw->down);
984 synaptics_report_ext_buttons(psmouse, hw);
987 static void synaptics_report_mt_data(struct psmouse *psmouse,
988 const struct synaptics_hw_state *sgm,
991 struct input_dev *dev = psmouse->dev;
992 struct synaptics_data *priv = psmouse->private;
993 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
994 struct input_mt_pos pos[2];
995 int slot[2], nsemi, i;
997 nsemi = clamp_val(num_fingers, 0, 2);
999 for (i = 0; i < nsemi; i++) {
1000 pos[i].x = hw[i]->x;
1001 pos[i].y = synaptics_invert_y(hw[i]->y);
1004 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
1006 for (i = 0; i < nsemi; i++) {
1007 input_mt_slot(dev, slot[i]);
1008 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1009 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1010 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1011 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1014 input_mt_drop_unused(dev);
1016 /* Don't use active slot count to generate BTN_TOOL events. */
1017 input_mt_report_pointer_emulation(dev, false);
1019 /* Send the number of fingers reported by touchpad itself. */
1020 input_mt_report_finger_count(dev, num_fingers);
1022 synaptics_report_buttons(psmouse, sgm);
1027 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1028 struct synaptics_hw_state *sgm)
1030 struct synaptics_data *priv = psmouse->private;
1034 * Update mt_state using the new finger count and current mt_state.
1038 else if (sgm->w >= 4)
1040 else if (sgm->w == 0)
1042 else if (sgm->w == 1)
1043 num_fingers = priv->agm_count ? priv->agm_count : 3;
1047 /* Send resulting input events to user space */
1048 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1051 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1053 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1056 /* Advanced gesture mode also sends multi finger data */
1057 return synaptics_has_agm(priv);
1061 * called for each full received packet from the touchpad
1063 static void synaptics_process_packet(struct psmouse *psmouse)
1065 struct input_dev *dev = psmouse->dev;
1066 struct synaptics_data *priv = psmouse->private;
1067 struct synaptics_device_info *info = &priv->info;
1068 struct synaptics_hw_state hw;
1072 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1075 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1076 synaptics_image_sensor_process(psmouse, &hw);
1081 priv->scroll += hw.scroll;
1083 while (priv->scroll >= 4) {
1084 input_report_key(dev, BTN_BACK, !hw.down);
1086 input_report_key(dev, BTN_BACK, hw.down);
1090 while (priv->scroll <= -4) {
1091 input_report_key(dev, BTN_FORWARD, !hw.up);
1093 input_report_key(dev, BTN_FORWARD, hw.up);
1100 if (hw.z > 0 && hw.x > 1) {
1103 if (SYN_CAP_EXTENDED(info->capabilities)) {
1106 if (synaptics_has_multifinger(priv))
1107 num_fingers = hw.w + 2;
1110 if (SYN_MODEL_PEN(info->model_id))
1111 ; /* Nothing, treat a pen as a single finger */
1114 if (SYN_CAP_PALMDETECT(info->capabilities))
1115 finger_width = hw.w;
1124 if (cr48_profile_sensor) {
1125 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1129 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1130 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1134 * BTN_TOUCH has to be first as mousedev relies on it when doing
1135 * absolute -> relative conversion
1137 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1138 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1140 if (num_fingers > 0) {
1141 input_report_abs(dev, ABS_X, hw.x);
1142 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1144 input_report_abs(dev, ABS_PRESSURE, hw.z);
1146 if (SYN_CAP_PALMDETECT(info->capabilities))
1147 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1149 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1150 if (synaptics_has_multifinger(priv)) {
1151 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1152 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1155 synaptics_report_buttons(psmouse, &hw);
1160 static bool synaptics_validate_byte(struct psmouse *psmouse,
1161 int idx, enum synaptics_pkt_type pkt_type)
1163 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1164 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1165 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1166 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1167 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1168 const u8 *packet = psmouse->packet;
1170 if (idx < 0 || idx > 4)
1176 case SYN_NEWABS_RELAXED:
1177 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1179 case SYN_NEWABS_STRICT:
1180 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1183 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1186 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1191 static enum synaptics_pkt_type
1192 synaptics_detect_pkt_type(struct psmouse *psmouse)
1196 for (i = 0; i < 5; i++) {
1197 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1198 psmouse_info(psmouse, "using relaxed packet validation\n");
1199 return SYN_NEWABS_RELAXED;
1203 return SYN_NEWABS_STRICT;
1206 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1208 struct synaptics_data *priv = psmouse->private;
1210 if (psmouse->pktcnt >= 6) { /* Full packet received */
1211 if (unlikely(priv->pkt_type == SYN_NEWABS))
1212 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1214 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1215 synaptics_is_pt_packet(psmouse->packet)) {
1217 synaptics_pass_pt_packet(priv->pt_port,
1220 synaptics_process_packet(psmouse);
1222 return PSMOUSE_FULL_PACKET;
1225 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1226 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1229 /*****************************************************************************
1230 * Driver initialization/cleanup functions
1231 ****************************************************************************/
1232 static void set_abs_position_params(struct input_dev *dev,
1233 struct synaptics_device_info *info,
1234 int x_code, int y_code)
1236 int x_min = info->x_min ?: XMIN_NOMINAL;
1237 int x_max = info->x_max ?: XMAX_NOMINAL;
1238 int y_min = info->y_min ?: YMIN_NOMINAL;
1239 int y_max = info->y_max ?: YMAX_NOMINAL;
1240 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1241 SYN_REDUCED_FILTER_FUZZ : 0;
1243 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1244 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1245 input_abs_set_res(dev, x_code, info->x_res);
1246 input_abs_set_res(dev, y_code, info->y_res);
1249 static void set_input_params(struct psmouse *psmouse,
1250 struct synaptics_data *priv)
1252 struct input_dev *dev = psmouse->dev;
1253 struct synaptics_device_info *info = &priv->info;
1256 /* Things that apply to both modes */
1257 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1258 __set_bit(EV_KEY, dev->evbit);
1259 __set_bit(BTN_LEFT, dev->keybit);
1260 __set_bit(BTN_RIGHT, dev->keybit);
1262 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1263 __set_bit(BTN_MIDDLE, dev->keybit);
1265 if (!priv->absolute_mode) {
1267 __set_bit(EV_REL, dev->evbit);
1268 __set_bit(REL_X, dev->relbit);
1269 __set_bit(REL_Y, dev->relbit);
1274 __set_bit(EV_ABS, dev->evbit);
1275 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1276 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1278 if (cr48_profile_sensor)
1279 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1281 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1282 set_abs_position_params(dev, info,
1283 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1284 /* Image sensors can report per-contact pressure */
1285 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1286 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
1288 /* Image sensors can signal 4 and 5 finger clicks */
1289 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1290 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1291 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1292 set_abs_position_params(dev, info,
1293 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1295 * Profile sensor in CR-48 tracks contacts reasonably well,
1296 * other non-image sensors with AGM use semi-mt.
1298 input_mt_init_slots(dev, 2,
1300 (cr48_profile_sensor ?
1301 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1304 * For semi-mt devices we send ABS_X/Y ourselves instead of
1305 * input_mt_report_pointer_emulation. But
1306 * input_mt_init_slots() resets the fuzz to 0, leading to a
1307 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1308 * position. Let's re-initialize ABS_X/Y here.
1310 if (!cr48_profile_sensor)
1311 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1314 if (SYN_CAP_PALMDETECT(info->capabilities))
1315 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1317 __set_bit(BTN_TOUCH, dev->keybit);
1318 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1320 if (synaptics_has_multifinger(priv)) {
1321 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1322 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1325 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1326 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1327 __set_bit(BTN_FORWARD, dev->keybit);
1328 __set_bit(BTN_BACK, dev->keybit);
1331 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1332 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1333 __set_bit(BTN_0 + i, dev->keybit);
1335 __clear_bit(EV_REL, dev->evbit);
1336 __clear_bit(REL_X, dev->relbit);
1337 __clear_bit(REL_Y, dev->relbit);
1339 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1340 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1341 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1342 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1343 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1344 /* Clickpads report only left button */
1345 __clear_bit(BTN_RIGHT, dev->keybit);
1346 __clear_bit(BTN_MIDDLE, dev->keybit);
1350 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1351 void *data, char *buf)
1353 struct synaptics_data *priv = psmouse->private;
1355 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1358 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1359 void *data, const char *buf,
1362 struct synaptics_data *priv = psmouse->private;
1366 err = kstrtouint(buf, 10, &value);
1373 if (value == priv->disable_gesture)
1376 priv->disable_gesture = value;
1378 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1380 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1382 if (synaptics_mode_cmd(psmouse, priv->mode))
1388 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1389 synaptics_show_disable_gesture,
1390 synaptics_set_disable_gesture);
1392 static void synaptics_disconnect(struct psmouse *psmouse)
1394 struct synaptics_data *priv = psmouse->private;
1397 * We might have left a breadcrumb when trying to
1398 * set up SMbus companion.
1400 psmouse_smbus_cleanup(psmouse);
1402 if (!priv->absolute_mode &&
1403 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1404 device_remove_file(&psmouse->ps2dev.serio->dev,
1405 &psmouse_attr_disable_gesture.dattr);
1407 synaptics_reset(psmouse);
1409 psmouse->private = NULL;
1412 static int synaptics_reconnect(struct psmouse *psmouse)
1414 struct synaptics_data *priv = psmouse->private;
1415 struct synaptics_device_info info;
1421 psmouse_reset(psmouse);
1424 * On some boxes, right after resuming, the touchpad
1425 * needs some time to finish initializing (I assume
1426 * it needs time to calibrate) and start responding
1427 * to Synaptics-specific queries, so let's wait a
1432 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1433 error = synaptics_detect(psmouse, 0);
1434 } while (error && ++retry < 3);
1440 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1442 error = synaptics_query_hardware(psmouse, &info);
1444 psmouse_err(psmouse, "Unable to query device.\n");
1448 error = synaptics_set_mode(psmouse);
1450 psmouse_err(psmouse, "Unable to initialize device.\n");
1454 if (info.identity != priv->info.identity ||
1455 info.model_id != priv->info.model_id ||
1456 info.capabilities != priv->info.capabilities ||
1457 info.ext_cap != priv->info.ext_cap) {
1458 psmouse_err(psmouse,
1459 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1460 priv->info.identity, info.identity,
1461 priv->info.model_id, info.model_id,
1462 priv->info.capabilities, info.capabilities,
1463 priv->info.ext_cap, info.ext_cap);
1470 static bool impaired_toshiba_kbc;
1472 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1473 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1475 /* Toshiba Satellite */
1477 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1478 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1482 /* Toshiba Dynabook */
1484 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1485 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1489 /* Toshiba Portege M300 */
1491 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1492 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1497 /* Toshiba Portege M300 */
1499 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1500 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1501 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1509 static bool broken_olpc_ec;
1511 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1512 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1514 /* OLPC XO-1 or XO-1.5 */
1516 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1517 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1524 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1525 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1527 /* Cr-48 Chromebook (Codename Mario) */
1529 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1530 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1537 void __init synaptics_module_init(void)
1539 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1540 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1541 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1544 static int synaptics_init_ps2(struct psmouse *psmouse,
1545 struct synaptics_device_info *info,
1548 struct synaptics_data *priv;
1551 synaptics_apply_quirks(psmouse, info);
1553 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1558 priv->absolute_mode = absolute_mode;
1559 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1560 priv->disable_gesture = true;
1563 * Unfortunately ForcePad capability is not exported over PS/2,
1564 * so we have to resort to checking PNP IDs.
1566 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1568 err = synaptics_set_mode(psmouse);
1570 psmouse_err(psmouse, "Unable to initialize device.\n");
1574 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1575 SYN_NEWABS : SYN_OLDABS;
1577 psmouse_info(psmouse,
1578 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1579 SYN_ID_MODEL(info->identity),
1580 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1582 info->capabilities, info->ext_cap, info->ext_cap_0c,
1583 info->ext_cap_10, info->board_id, info->firmware_id);
1585 set_input_params(psmouse, priv);
1588 * Encode touchpad model so that it can be used to set
1589 * input device->id.version and be visible to userspace.
1590 * Because version is __u16 we have to drop something.
1591 * Hardware info bits seem to be good candidates as they
1592 * are documented to be for Synaptics corp. internal use.
1594 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1595 (info->model_id & 0x000000ff);
1597 if (absolute_mode) {
1598 psmouse->protocol_handler = synaptics_process_byte;
1599 psmouse->pktsize = 6;
1601 /* Relative mode follows standard PS/2 mouse protocol */
1602 psmouse->protocol_handler = psmouse_process_byte;
1603 psmouse->pktsize = 3;
1606 psmouse->set_rate = synaptics_set_rate;
1607 psmouse->disconnect = synaptics_disconnect;
1608 psmouse->reconnect = synaptics_reconnect;
1609 psmouse->cleanup = synaptics_reset;
1610 /* Synaptics can usually stay in sync without extra help */
1611 psmouse->resync_time = 0;
1613 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1614 synaptics_pt_create(psmouse);
1617 * Toshiba's KBC seems to have trouble handling data from
1618 * Synaptics at full rate. Switch to a lower rate (roughly
1619 * the same rate as a standard PS/2 mouse).
1621 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1622 psmouse_info(psmouse,
1623 "Toshiba %s detected, limiting rate to 40pps.\n",
1624 dmi_get_system_info(DMI_PRODUCT_NAME));
1628 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1629 err = device_create_file(&psmouse->ps2dev.serio->dev,
1630 &psmouse_attr_disable_gesture.dattr);
1632 psmouse_err(psmouse,
1633 "Failed to create disable_gesture attribute (%d)",
1646 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1648 struct synaptics_device_info info;
1651 psmouse_reset(psmouse);
1653 error = synaptics_query_hardware(psmouse, &info);
1655 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1659 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1662 int synaptics_init_absolute(struct psmouse *psmouse)
1664 return __synaptics_init(psmouse, true);
1667 int synaptics_init_relative(struct psmouse *psmouse)
1669 return __synaptics_init(psmouse, false);
1672 static int synaptics_setup_ps2(struct psmouse *psmouse,
1673 struct synaptics_device_info *info)
1675 bool absolute_mode = true;
1679 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1680 * packet spew overloads the EC such that key presses on the keyboard
1681 * are missed. Given that, don't even attempt to use Absolute mode.
1682 * Relative mode seems to work just fine.
1684 if (broken_olpc_ec) {
1685 psmouse_info(psmouse,
1686 "OLPC XO detected, forcing relative protocol.\n");
1687 absolute_mode = false;
1690 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1694 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1697 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1699 void __init synaptics_module_init(void)
1703 static int __maybe_unused
1704 synaptics_setup_ps2(struct psmouse *psmouse,
1705 struct synaptics_device_info *info)
1710 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1712 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1715 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1716 * provides a better bandwidth and allow a better control of the touchpads.
1717 * This is used to decide if we need to use this bus or not.
1720 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1721 SYNAPTICS_INTERTOUCH_OFF,
1722 SYNAPTICS_INTERTOUCH_ON,
1725 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1726 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1727 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1728 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1730 static int synaptics_create_intertouch(struct psmouse *psmouse,
1731 struct synaptics_device_info *info,
1732 bool leave_breadcrumbs)
1735 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1736 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1737 const struct rmi_device_platform_data pdata = {
1738 .reset_delay_ms = 30,
1740 .sensor_type = rmi_sensor_touchpad,
1741 .axis_align.flip_y = true,
1742 .kernel_tracking = false,
1743 .topbuttonpad = topbuttonpad,
1746 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1747 .trackstick_buttons =
1748 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1751 const struct i2c_board_info intertouch_board = {
1752 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1753 .flags = I2C_CLIENT_HOST_NOTIFY,
1756 return psmouse_smbus_init(psmouse, &intertouch_board,
1757 &pdata, sizeof(pdata),
1762 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1763 * and decides to instantiate a SMBus InterTouch device.
1765 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1766 struct synaptics_device_info *info,
1767 bool leave_breadcrumbs)
1771 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1774 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1775 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1776 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1778 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1779 psmouse_info(psmouse,
1780 "Your touchpad (%s) says it can support a different bus. "
1781 "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",
1782 psmouse->ps2dev.serio->firmware_id);
1788 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1790 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1792 if (error == -EAGAIN)
1793 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1795 psmouse_err(psmouse, "unable to create intertouch device\n");
1803 int synaptics_init_smbus(struct psmouse *psmouse)
1805 struct synaptics_device_info info;
1808 psmouse_reset(psmouse);
1810 error = synaptics_query_hardware(psmouse, &info);
1812 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1816 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1819 return synaptics_create_intertouch(psmouse, &info, false);
1822 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1824 static int __maybe_unused
1825 synaptics_setup_intertouch(struct psmouse *psmouse,
1826 struct synaptics_device_info *info,
1827 bool leave_breadcrumbs)
1832 int synaptics_init_smbus(struct psmouse *psmouse)
1837 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1839 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1840 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1842 int synaptics_init(struct psmouse *psmouse)
1844 struct synaptics_device_info info;
1848 psmouse_reset(psmouse);
1850 error = synaptics_query_hardware(psmouse, &info);
1852 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1856 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1857 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1858 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1859 /* Forcepads need F21, which is not ready */
1860 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1861 psmouse_warn(psmouse,
1862 "The touchpad can support a better bus than the too old PS/2 protocol. "
1863 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1866 error = synaptics_setup_intertouch(psmouse, &info, true);
1868 return PSMOUSE_SYNAPTICS_SMBUS;
1871 retval = synaptics_setup_ps2(psmouse, &info);
1874 * Not using any flavor of Synaptics support, so clean up
1875 * SMbus breadcrumbs, if any.
1877 psmouse_smbus_cleanup(psmouse);
1883 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1885 int synaptics_init(struct psmouse *psmouse)
1890 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */