1 // SPDX-License-Identifier: GPL-2.0-only
3 * Synaptics TouchPad PS/2 mouse driver
5 * 2003 Dmitry Torokhov <dtor@mail.ru>
6 * Added support for pass-through port. Special thanks to Peter Berg Larsen
7 * for explaining various Synaptics quirks.
9 * 2003 Peter Osterlund <petero2@telia.com>
10 * Ported to 2.5 input device infrastructure.
12 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
13 * start merging tpconfig and gpm code to a xfree-input module
14 * adding some changes and extensions (ex. 3rd and 4th button)
16 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
17 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
18 * code for the special synaptics commands (from the tpconfig-source)
20 * Trademarks are the property of their respective owners.
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/dmi.h>
26 #include <linux/input/mt.h>
27 #include <linux/serio.h>
28 #include <linux/libps2.h>
29 #include <linux/rmi.h>
30 #include <linux/i2c.h>
31 #include <linux/slab.h>
33 #include "synaptics.h"
36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
37 * section 2.3.2, which says that they should be valid regardless of the
38 * actual size of the sensor.
39 * Note that newer firmware allows querying device for maximum useable
46 #define XMIN_NOMINAL 1472
47 #define XMAX_NOMINAL 5472
48 #define YMIN_NOMINAL 1408
49 #define YMAX_NOMINAL 4448
51 /* Size in bits of absolute position values reported by the hardware */
52 #define ABS_POS_BITS 13
55 * These values should represent the absolute maximum value that will
56 * be reported for a positive position value. Some Synaptics firmware
57 * uses this value to indicate a finger near the edge of the touchpad
58 * whose precise position cannot be determined.
60 * At least one touchpad is known to report positions in excess of this
61 * value which are actually negative values truncated to the 13-bit
62 * reporting range. These values have never been observed to be lower
63 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
64 * negative and any other value as positive.
66 #define X_MAX_POSITIVE 8176
67 #define Y_MAX_POSITIVE 8176
69 /* maximum ABS_MT_POSITION displacement (in mm) */
72 /*****************************************************************************
73 * Stuff we need even when we do not want native Synaptics support
74 ****************************************************************************/
77 * Set the synaptics touchpad mode byte by special commands
79 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
84 error = ps2_sliced_command(&psmouse->ps2dev, mode);
88 param[0] = SYN_PS_SET_MODE2;
89 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
96 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
98 struct ps2dev *ps2dev = &psmouse->ps2dev;
101 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
102 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
103 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
104 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
105 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
107 if (param[1] != 0x47)
110 if (set_properties) {
111 psmouse->vendor = "Synaptics";
112 psmouse->name = "TouchPad";
118 void synaptics_reset(struct psmouse *psmouse)
120 /* reset touchpad back to relative mode, gestures enabled */
121 synaptics_mode_cmd(psmouse, 0);
124 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
125 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
127 /* This list has been kindly provided by Synaptics. */
128 static const char * const topbuttonpad_pnp_ids[] = {
138 "LEN0033", /* Helix */
139 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
140 "LEN0035", /* X240 */
141 "LEN0036", /* T440 */
142 "LEN0037", /* X1 Carbon 2nd */
144 "LEN0039", /* T440s */
146 "LEN0042", /* Yoga */
149 "LEN2000", /* S540 */
150 "LEN2001", /* Edge E431 */
151 "LEN2002", /* Edge E531 */
153 "LEN2004", /* L440 */
155 "LEN2006", /* Edge E440/E540 */
164 static const char * const smbus_pnp_ids[] = {
165 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
166 "LEN0048", /* X1 Carbon 3 */
167 "LEN0046", /* X250 */
168 "LEN0049", /* Yoga 11e */
169 "LEN004a", /* W541 */
171 "LEN005e", /* T560 */
172 "LEN006c", /* T470s */
173 "LEN007a", /* T470s */
174 "LEN0071", /* T480 */
175 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
176 "LEN0073", /* X1 Carbon G5 (Elantech) */
177 "LEN0091", /* X1 Carbon 6 */
178 "LEN0092", /* X1 Carbon 6 */
179 "LEN0093", /* T480 */
180 "LEN0096", /* X280 */
181 "LEN0097", /* X280 -> ALPS trackpoint */
182 "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */
183 "LEN009b", /* T580 */
184 "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */
185 "LEN200f", /* T450s */
186 "LEN2044", /* L470 */
187 "LEN2054", /* E480 */
188 "LEN2055", /* E580 */
189 "LEN2068", /* T14 Gen 1 */
190 "SYN3052", /* HP EliteBook 840 G4 */
191 "SYN3221", /* HP 15-ay000 */
192 "SYN323d", /* HP Spectre X360 13-w013dx */
193 "SYN3257", /* HP Envy 13-ad105ng */
197 static const char * const forcepad_pnp_ids[] = {
204 * Send a command to the synaptics touchpad by special commands
206 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
210 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
214 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
221 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
229 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
233 *val = be32_to_cpu(resp.be_val);
239 * See also the SYN_ID_* macros
241 static int synaptics_identify(struct psmouse *psmouse,
242 struct synaptics_device_info *info)
246 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
250 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
254 * Read the model-id bytes from the touchpad
255 * see also SYN_MODEL_* macros
257 static int synaptics_model_id(struct psmouse *psmouse,
258 struct synaptics_device_info *info)
260 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
264 * Read the firmware id from the touchpad
266 static int synaptics_firmware_id(struct psmouse *psmouse,
267 struct synaptics_device_info *info)
269 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
274 * Read the board id and the "More Extended Queries" from the touchpad
275 * The board id is encoded in the "QUERY MODES" response
277 static int synaptics_query_modes(struct psmouse *psmouse,
278 struct synaptics_device_info *info)
283 /* firmwares prior 7.5 have no board_id encoded */
284 if (SYN_ID_FULL(info->identity) < 0x705)
287 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
291 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
293 if (SYN_MEXT_CAP_BIT(bid[0]))
294 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
301 * Read the capability-bits from the touchpad
302 * see also the SYN_CAP_* macros
304 static int synaptics_capability(struct psmouse *psmouse,
305 struct synaptics_device_info *info)
309 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
310 &info->capabilities);
314 info->ext_cap = info->ext_cap_0c = 0;
317 * Older firmwares had submodel ID fixed to 0x47
319 if (SYN_ID_FULL(info->identity) < 0x705 &&
320 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
325 * Unless capExtended is set the rest of the flags should be ignored
327 if (!SYN_CAP_EXTENDED(info->capabilities))
328 info->capabilities = 0;
330 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
331 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
334 psmouse_warn(psmouse,
335 "device claims to have extended capabilities, but I'm not able to read them.\n");
338 * if nExtBtn is greater than 8 it should be considered
339 * invalid and treated as 0
341 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
342 info->ext_cap &= ~SYN_CAP_MB_MASK;
346 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
347 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
350 psmouse_warn(psmouse,
351 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
358 * Read touchpad resolution and maximum reported coordinates
359 * Resolution is left zero if touchpad does not support the query
361 static int synaptics_resolution(struct psmouse *psmouse,
362 struct synaptics_device_info *info)
367 if (SYN_ID_MAJOR(info->identity) < 4)
370 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
372 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
373 info->x_res = resp[0]; /* x resolution in units/mm */
374 info->y_res = resp[2]; /* y resolution in units/mm */
378 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
379 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
380 error = synaptics_send_cmd(psmouse,
381 SYN_QUE_EXT_MAX_COORDS, resp);
383 psmouse_warn(psmouse,
384 "device claims to have max coordinates query, but I'm not able to read it.\n");
386 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
387 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
388 psmouse_info(psmouse,
389 "queried max coordinates: x [..%d], y [..%d]\n",
390 info->x_max, info->y_max);
394 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
395 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
397 * Firmware v8.1 does not report proper number of extended
398 * capabilities, but has been proven to report correct min
401 SYN_ID_FULL(info->identity) == 0x801)) {
402 error = synaptics_send_cmd(psmouse,
403 SYN_QUE_EXT_MIN_COORDS, resp);
405 psmouse_warn(psmouse,
406 "device claims to have min coordinates query, but I'm not able to read it.\n");
408 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
409 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
410 psmouse_info(psmouse,
411 "queried min coordinates: x [%d..], y [%d..]\n",
412 info->x_min, info->y_min);
419 static int synaptics_query_hardware(struct psmouse *psmouse,
420 struct synaptics_device_info *info)
424 memset(info, 0, sizeof(*info));
426 error = synaptics_identify(psmouse, info);
430 error = synaptics_model_id(psmouse, info);
434 error = synaptics_firmware_id(psmouse, info);
438 error = synaptics_query_modes(psmouse, info);
442 error = synaptics_capability(psmouse, info);
446 error = synaptics_resolution(psmouse, info);
453 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
455 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
457 static bool cr48_profile_sensor;
459 #define ANY_BOARD_ID 0
460 struct min_max_quirk {
461 const char * const *pnp_ids;
465 u32 x_min, x_max, y_min, y_max;
468 static const struct min_max_quirk min_max_pnpid_table[] = {
470 (const char * const []){"LEN0033", NULL},
471 {ANY_BOARD_ID, ANY_BOARD_ID},
472 1024, 5052, 2258, 4832
475 (const char * const []){"LEN0042", NULL},
476 {ANY_BOARD_ID, ANY_BOARD_ID},
477 1232, 5710, 1156, 4696
480 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
481 "LEN0039", "LEN2002", "LEN2004",
483 {ANY_BOARD_ID, 2961},
484 1024, 5112, 2024, 4832
487 (const char * const []){"LEN2000", NULL},
488 {ANY_BOARD_ID, ANY_BOARD_ID},
489 1024, 5113, 2021, 4832
492 (const char * const []){"LEN2001", NULL},
493 {ANY_BOARD_ID, ANY_BOARD_ID},
494 1024, 5022, 2508, 4832
497 (const char * const []){"LEN2006", NULL},
499 1024, 5045, 2457, 4832
502 (const char * const []){"LEN2006", NULL},
503 {ANY_BOARD_ID, ANY_BOARD_ID},
504 1264, 5675, 1171, 4688
509 /*****************************************************************************
510 * Synaptics communications functions
511 ****************************************************************************/
514 * Synaptics touchpads report the y coordinate from bottom to top, which is
515 * opposite from what userspace expects.
516 * This function is used to invert y before reporting.
518 static int synaptics_invert_y(int y)
520 return YMAX_NOMINAL + YMIN_NOMINAL - y;
524 * Apply quirk(s) if the hardware matches
526 static void synaptics_apply_quirks(struct psmouse *psmouse,
527 struct synaptics_device_info *info)
531 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
532 if (!psmouse_matches_pnp_id(psmouse,
533 min_max_pnpid_table[i].pnp_ids))
536 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
537 info->board_id < min_max_pnpid_table[i].board_id.min)
540 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
541 info->board_id > min_max_pnpid_table[i].board_id.max)
544 info->x_min = min_max_pnpid_table[i].x_min;
545 info->x_max = min_max_pnpid_table[i].x_max;
546 info->y_min = min_max_pnpid_table[i].y_min;
547 info->y_max = min_max_pnpid_table[i].y_max;
548 psmouse_info(psmouse,
549 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
550 info->x_min, info->x_max,
551 info->y_min, info->y_max);
556 static bool synaptics_has_agm(struct synaptics_data *priv)
558 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
559 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
562 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
564 static u8 param = 0xc8;
567 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
571 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
578 static int synaptics_set_mode(struct psmouse *psmouse)
580 struct synaptics_data *priv = psmouse->private;
584 if (priv->absolute_mode)
585 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
586 if (priv->disable_gesture)
587 priv->mode |= SYN_BIT_DISABLE_GESTURE;
588 if (psmouse->rate >= 80)
589 priv->mode |= SYN_BIT_HIGH_RATE;
590 if (SYN_CAP_EXTENDED(priv->info.capabilities))
591 priv->mode |= SYN_BIT_W_MODE;
593 error = synaptics_mode_cmd(psmouse, priv->mode);
597 if (priv->absolute_mode && synaptics_has_agm(priv)) {
598 error = synaptics_set_advanced_gesture_mode(psmouse);
601 "Advanced gesture mode init failed: %d\n",
610 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
612 struct synaptics_data *priv = psmouse->private;
615 priv->mode |= SYN_BIT_HIGH_RATE;
618 priv->mode &= ~SYN_BIT_HIGH_RATE;
622 synaptics_mode_cmd(psmouse, priv->mode);
625 /*****************************************************************************
626 * Synaptics pass-through PS/2 port support
627 ****************************************************************************/
628 static int synaptics_pt_write(struct serio *serio, u8 c)
630 struct psmouse *parent = serio_get_drvdata(serio->parent);
631 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
634 error = ps2_sliced_command(&parent->ps2dev, c);
638 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
645 static int synaptics_pt_start(struct serio *serio)
647 struct psmouse *parent = serio_get_drvdata(serio->parent);
648 struct synaptics_data *priv = parent->private;
650 serio_pause_rx(parent->ps2dev.serio);
651 priv->pt_port = serio;
652 serio_continue_rx(parent->ps2dev.serio);
657 static void synaptics_pt_stop(struct serio *serio)
659 struct psmouse *parent = serio_get_drvdata(serio->parent);
660 struct synaptics_data *priv = parent->private;
662 serio_pause_rx(parent->ps2dev.serio);
663 priv->pt_port = NULL;
664 serio_continue_rx(parent->ps2dev.serio);
667 static int synaptics_is_pt_packet(u8 *buf)
669 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
672 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
674 struct psmouse *child = serio_get_drvdata(ptport);
676 if (child && child->state == PSMOUSE_ACTIVATED) {
677 serio_interrupt(ptport, packet[1], 0);
678 serio_interrupt(ptport, packet[4], 0);
679 serio_interrupt(ptport, packet[5], 0);
680 if (child->pktsize == 4)
681 serio_interrupt(ptport, packet[2], 0);
683 serio_interrupt(ptport, packet[1], 0);
687 static void synaptics_pt_activate(struct psmouse *psmouse)
689 struct synaptics_data *priv = psmouse->private;
690 struct psmouse *child = serio_get_drvdata(priv->pt_port);
692 /* adjust the touchpad to child's choice of protocol */
694 if (child->pktsize == 4)
695 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
697 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
699 if (synaptics_mode_cmd(psmouse, priv->mode))
700 psmouse_warn(psmouse,
701 "failed to switch guest protocol\n");
705 static void synaptics_pt_create(struct psmouse *psmouse)
709 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
712 "not enough memory for pass-through port\n");
716 serio->id.type = SERIO_PS_PSTHRU;
717 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
718 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
719 serio->write = synaptics_pt_write;
720 serio->start = synaptics_pt_start;
721 serio->stop = synaptics_pt_stop;
722 serio->parent = psmouse->ps2dev.serio;
724 psmouse->pt_activate = synaptics_pt_activate;
726 psmouse_info(psmouse, "serio: %s port at %s\n",
727 serio->name, psmouse->phys);
728 serio_register_port(serio);
731 /*****************************************************************************
732 * Functions to interpret the absolute mode packets
733 ****************************************************************************/
735 static void synaptics_parse_agm(const u8 buf[],
736 struct synaptics_data *priv,
737 struct synaptics_hw_state *hw)
739 struct synaptics_hw_state *agm = &priv->agm;
742 agm_packet_type = (buf[5] & 0x30) >> 4;
743 switch (agm_packet_type) {
745 /* Gesture packet: (x, y, z) half resolution */
747 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
748 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
749 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
753 /* AGM-CONTACT packet: we are only interested in the count */
754 priv->agm_count = buf[1];
762 static void synaptics_parse_ext_buttons(const u8 buf[],
763 struct synaptics_data *priv,
764 struct synaptics_hw_state *hw)
766 unsigned int ext_bits =
767 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
768 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
770 hw->ext_buttons = buf[4] & ext_mask;
771 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
774 static int synaptics_parse_hw_state(const u8 buf[],
775 struct synaptics_data *priv,
776 struct synaptics_hw_state *hw)
778 memset(hw, 0, sizeof(struct synaptics_hw_state));
780 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
781 hw->w = (((buf[0] & 0x30) >> 2) |
782 ((buf[0] & 0x04) >> 1) |
783 ((buf[3] & 0x04) >> 2));
785 if (synaptics_has_agm(priv) && hw->w == 2) {
786 synaptics_parse_agm(buf, priv, hw);
790 hw->x = (((buf[3] & 0x10) << 8) |
791 ((buf[1] & 0x0f) << 8) |
793 hw->y = (((buf[3] & 0x20) << 7) |
794 ((buf[1] & 0xf0) << 4) |
798 hw->left = (buf[0] & 0x01) ? 1 : 0;
799 hw->right = (buf[0] & 0x02) ? 1 : 0;
801 if (priv->is_forcepad) {
803 * ForcePads, like Clickpads, use middle button
804 * bits to report primary button clicks.
805 * Unfortunately they report primary button not
806 * only when user presses on the pad above certain
807 * threshold, but also when there are more than one
808 * finger on the touchpad, which interferes with
809 * out multi-finger gestures.
813 priv->press = priv->report_press = false;
814 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
816 * Single-finger touch with pressure above
817 * the threshold. If pressure stays long
818 * enough, we'll start reporting primary
819 * button. We rely on the device continuing
820 * sending data even if finger does not
824 priv->press_start = jiffies;
826 } else if (time_after(jiffies,
828 msecs_to_jiffies(50))) {
829 priv->report_press = true;
835 hw->left = priv->report_press;
837 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
839 * Clickpad's button is transmitted as middle button,
840 * however, since it is primary button, we will report
843 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
845 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
846 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
848 hw->scroll = (s8)buf[1];
851 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
852 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
853 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
856 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
857 ((buf[0] ^ buf[3]) & 0x02)) {
858 synaptics_parse_ext_buttons(buf, priv, hw);
861 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
862 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
864 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
865 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
867 hw->left = (buf[0] & 0x01) ? 1 : 0;
868 hw->right = (buf[0] & 0x02) ? 1 : 0;
872 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
873 * is used by some firmware to indicate a finger at the edge of
874 * the touchpad whose precise position cannot be determined, so
875 * convert these values to the maximum axis value.
877 if (hw->x > X_MAX_POSITIVE)
878 hw->x -= 1 << ABS_POS_BITS;
879 else if (hw->x == X_MAX_POSITIVE)
882 if (hw->y > Y_MAX_POSITIVE)
883 hw->y -= 1 << ABS_POS_BITS;
884 else if (hw->y == Y_MAX_POSITIVE)
890 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
891 bool active, int x, int y)
893 input_mt_slot(dev, slot);
894 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
896 input_report_abs(dev, ABS_MT_POSITION_X, x);
897 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
901 static void synaptics_report_semi_mt_data(struct input_dev *dev,
902 const struct synaptics_hw_state *a,
903 const struct synaptics_hw_state *b,
906 if (num_fingers >= 2) {
907 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
909 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
911 } else if (num_fingers == 1) {
912 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
913 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
915 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
916 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
920 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
921 const struct synaptics_hw_state *hw)
923 struct input_dev *dev = psmouse->dev;
924 struct synaptics_data *priv = psmouse->private;
925 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
928 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
931 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
932 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
933 SYN_ID_FULL(priv->info.identity) == 0x802) &&
934 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
937 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
938 for (i = 0; i < ext_bits; i++) {
939 input_report_key(dev, BTN_0 + 2 * i,
940 hw->ext_buttons & BIT(i));
941 input_report_key(dev, BTN_1 + 2 * i,
942 hw->ext_buttons & BIT(i + ext_bits));
948 * This generation of touchpads has the trackstick buttons
949 * physically wired to the touchpad. Re-route them through
950 * the pass-through interface.
955 /* The trackstick expects at most 3 buttons */
956 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
957 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
958 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
960 serio_interrupt(priv->pt_port,
961 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
962 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
966 static void synaptics_report_buttons(struct psmouse *psmouse,
967 const struct synaptics_hw_state *hw)
969 struct input_dev *dev = psmouse->dev;
970 struct synaptics_data *priv = psmouse->private;
972 input_report_key(dev, BTN_LEFT, hw->left);
973 input_report_key(dev, BTN_RIGHT, hw->right);
975 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
976 input_report_key(dev, BTN_MIDDLE, hw->middle);
978 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
979 input_report_key(dev, BTN_FORWARD, hw->up);
980 input_report_key(dev, BTN_BACK, hw->down);
983 synaptics_report_ext_buttons(psmouse, hw);
986 static void synaptics_report_mt_data(struct psmouse *psmouse,
987 const struct synaptics_hw_state *sgm,
990 struct input_dev *dev = psmouse->dev;
991 struct synaptics_data *priv = psmouse->private;
992 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
993 struct input_mt_pos pos[2];
994 int slot[2], nsemi, i;
996 nsemi = clamp_val(num_fingers, 0, 2);
998 for (i = 0; i < nsemi; i++) {
1000 pos[i].y = synaptics_invert_y(hw[i]->y);
1003 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
1005 for (i = 0; i < nsemi; i++) {
1006 input_mt_slot(dev, slot[i]);
1007 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1008 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1009 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1010 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1013 input_mt_drop_unused(dev);
1015 /* Don't use active slot count to generate BTN_TOOL events. */
1016 input_mt_report_pointer_emulation(dev, false);
1018 /* Send the number of fingers reported by touchpad itself. */
1019 input_mt_report_finger_count(dev, num_fingers);
1021 synaptics_report_buttons(psmouse, sgm);
1026 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1027 struct synaptics_hw_state *sgm)
1029 struct synaptics_data *priv = psmouse->private;
1033 * Update mt_state using the new finger count and current mt_state.
1037 else if (sgm->w >= 4)
1039 else if (sgm->w == 0)
1041 else if (sgm->w == 1)
1042 num_fingers = priv->agm_count ? priv->agm_count : 3;
1046 /* Send resulting input events to user space */
1047 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1050 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1052 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1055 /* Advanced gesture mode also sends multi finger data */
1056 return synaptics_has_agm(priv);
1060 * called for each full received packet from the touchpad
1062 static void synaptics_process_packet(struct psmouse *psmouse)
1064 struct input_dev *dev = psmouse->dev;
1065 struct synaptics_data *priv = psmouse->private;
1066 struct synaptics_device_info *info = &priv->info;
1067 struct synaptics_hw_state hw;
1071 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1074 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1075 synaptics_image_sensor_process(psmouse, &hw);
1080 priv->scroll += hw.scroll;
1082 while (priv->scroll >= 4) {
1083 input_report_key(dev, BTN_BACK, !hw.down);
1085 input_report_key(dev, BTN_BACK, hw.down);
1089 while (priv->scroll <= -4) {
1090 input_report_key(dev, BTN_FORWARD, !hw.up);
1092 input_report_key(dev, BTN_FORWARD, hw.up);
1099 if (hw.z > 0 && hw.x > 1) {
1102 if (SYN_CAP_EXTENDED(info->capabilities)) {
1105 if (synaptics_has_multifinger(priv))
1106 num_fingers = hw.w + 2;
1109 if (SYN_MODEL_PEN(info->model_id))
1110 ; /* Nothing, treat a pen as a single finger */
1113 if (SYN_CAP_PALMDETECT(info->capabilities))
1114 finger_width = hw.w;
1123 if (cr48_profile_sensor) {
1124 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1128 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1129 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1133 * BTN_TOUCH has to be first as mousedev relies on it when doing
1134 * absolute -> relative conversion
1136 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1137 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1139 if (num_fingers > 0) {
1140 input_report_abs(dev, ABS_X, hw.x);
1141 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1143 input_report_abs(dev, ABS_PRESSURE, hw.z);
1145 if (SYN_CAP_PALMDETECT(info->capabilities))
1146 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1148 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1149 if (synaptics_has_multifinger(priv)) {
1150 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1151 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1154 synaptics_report_buttons(psmouse, &hw);
1159 static bool synaptics_validate_byte(struct psmouse *psmouse,
1160 int idx, enum synaptics_pkt_type pkt_type)
1162 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1163 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1164 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1165 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1166 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1167 const u8 *packet = psmouse->packet;
1169 if (idx < 0 || idx > 4)
1175 case SYN_NEWABS_RELAXED:
1176 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1178 case SYN_NEWABS_STRICT:
1179 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1182 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1185 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1190 static enum synaptics_pkt_type
1191 synaptics_detect_pkt_type(struct psmouse *psmouse)
1195 for (i = 0; i < 5; i++) {
1196 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1197 psmouse_info(psmouse, "using relaxed packet validation\n");
1198 return SYN_NEWABS_RELAXED;
1202 return SYN_NEWABS_STRICT;
1205 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1207 struct synaptics_data *priv = psmouse->private;
1209 if (psmouse->pktcnt >= 6) { /* Full packet received */
1210 if (unlikely(priv->pkt_type == SYN_NEWABS))
1211 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1213 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1214 synaptics_is_pt_packet(psmouse->packet)) {
1216 synaptics_pass_pt_packet(priv->pt_port,
1219 synaptics_process_packet(psmouse);
1221 return PSMOUSE_FULL_PACKET;
1224 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1225 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1228 /*****************************************************************************
1229 * Driver initialization/cleanup functions
1230 ****************************************************************************/
1231 static void set_abs_position_params(struct input_dev *dev,
1232 struct synaptics_device_info *info,
1233 int x_code, int y_code)
1235 int x_min = info->x_min ?: XMIN_NOMINAL;
1236 int x_max = info->x_max ?: XMAX_NOMINAL;
1237 int y_min = info->y_min ?: YMIN_NOMINAL;
1238 int y_max = info->y_max ?: YMAX_NOMINAL;
1239 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1240 SYN_REDUCED_FILTER_FUZZ : 0;
1242 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1243 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1244 input_abs_set_res(dev, x_code, info->x_res);
1245 input_abs_set_res(dev, y_code, info->y_res);
1248 static int set_input_params(struct psmouse *psmouse,
1249 struct synaptics_data *priv)
1251 struct input_dev *dev = psmouse->dev;
1252 struct synaptics_device_info *info = &priv->info;
1256 /* Reset default psmouse capabilities */
1257 __clear_bit(EV_REL, dev->evbit);
1258 bitmap_zero(dev->relbit, REL_CNT);
1259 bitmap_zero(dev->keybit, KEY_CNT);
1261 /* Things that apply to both modes */
1262 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1264 input_set_capability(dev, EV_KEY, BTN_LEFT);
1266 /* Clickpads report only left button */
1267 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1268 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1269 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1270 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1273 if (!priv->absolute_mode) {
1275 input_set_capability(dev, EV_REL, REL_X);
1276 input_set_capability(dev, EV_REL, REL_Y);
1281 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1282 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1284 if (cr48_profile_sensor)
1285 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1287 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1288 set_abs_position_params(dev, info,
1289 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1290 /* Image sensors can report per-contact pressure */
1291 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1293 error = input_mt_init_slots(dev, 2,
1294 INPUT_MT_POINTER | INPUT_MT_TRACK);
1298 /* Image sensors can signal 4 and 5 finger clicks */
1299 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1300 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1301 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1302 set_abs_position_params(dev, info,
1303 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1305 * Profile sensor in CR-48 tracks contacts reasonably well,
1306 * other non-image sensors with AGM use semi-mt.
1308 error = input_mt_init_slots(dev, 2,
1310 (cr48_profile_sensor ?
1317 * For semi-mt devices we send ABS_X/Y ourselves instead of
1318 * input_mt_report_pointer_emulation. But
1319 * input_mt_init_slots() resets the fuzz to 0, leading to a
1320 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1321 * position. Let's re-initialize ABS_X/Y here.
1323 if (!cr48_profile_sensor)
1324 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1327 if (SYN_CAP_PALMDETECT(info->capabilities))
1328 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1330 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1331 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1333 if (synaptics_has_multifinger(priv)) {
1334 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1335 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1338 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1339 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1340 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1341 input_set_capability(dev, EV_KEY, BTN_BACK);
1344 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1345 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1346 input_set_capability(dev, EV_KEY, BTN_0 + i);
1348 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1349 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1350 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1351 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1352 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1358 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1359 void *data, char *buf)
1361 struct synaptics_data *priv = psmouse->private;
1363 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1366 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1367 void *data, const char *buf,
1370 struct synaptics_data *priv = psmouse->private;
1374 err = kstrtouint(buf, 10, &value);
1381 if (value == priv->disable_gesture)
1384 priv->disable_gesture = value;
1386 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1388 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1390 if (synaptics_mode_cmd(psmouse, priv->mode))
1396 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1397 synaptics_show_disable_gesture,
1398 synaptics_set_disable_gesture);
1400 static void synaptics_disconnect(struct psmouse *psmouse)
1402 struct synaptics_data *priv = psmouse->private;
1405 * We might have left a breadcrumb when trying to
1406 * set up SMbus companion.
1408 psmouse_smbus_cleanup(psmouse);
1410 if (!priv->absolute_mode &&
1411 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1412 device_remove_file(&psmouse->ps2dev.serio->dev,
1413 &psmouse_attr_disable_gesture.dattr);
1415 synaptics_reset(psmouse);
1417 psmouse->private = NULL;
1420 static int synaptics_reconnect(struct psmouse *psmouse)
1422 struct synaptics_data *priv = psmouse->private;
1423 struct synaptics_device_info info;
1429 psmouse_reset(psmouse);
1432 * On some boxes, right after resuming, the touchpad
1433 * needs some time to finish initializing (I assume
1434 * it needs time to calibrate) and start responding
1435 * to Synaptics-specific queries, so let's wait a
1440 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1441 error = synaptics_detect(psmouse, 0);
1442 } while (error && ++retry < 3);
1448 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1450 error = synaptics_query_hardware(psmouse, &info);
1452 psmouse_err(psmouse, "Unable to query device.\n");
1456 error = synaptics_set_mode(psmouse);
1458 psmouse_err(psmouse, "Unable to initialize device.\n");
1462 if (info.identity != priv->info.identity ||
1463 info.model_id != priv->info.model_id ||
1464 info.capabilities != priv->info.capabilities ||
1465 info.ext_cap != priv->info.ext_cap) {
1466 psmouse_err(psmouse,
1467 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1468 priv->info.identity, info.identity,
1469 priv->info.model_id, info.model_id,
1470 priv->info.capabilities, info.capabilities,
1471 priv->info.ext_cap, info.ext_cap);
1478 static bool impaired_toshiba_kbc;
1480 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1481 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1483 /* Toshiba Satellite */
1485 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1486 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1490 /* Toshiba Dynabook */
1492 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1493 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1497 /* Toshiba Portege M300 */
1499 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1500 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1505 /* Toshiba Portege M300 */
1507 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1508 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1509 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1517 static bool broken_olpc_ec;
1519 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1520 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1522 /* OLPC XO-1 or XO-1.5 */
1524 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1525 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1532 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1533 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1535 /* Cr-48 Chromebook (Codename Mario) */
1537 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1538 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1545 void __init synaptics_module_init(void)
1547 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1548 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1549 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1552 static int synaptics_init_ps2(struct psmouse *psmouse,
1553 struct synaptics_device_info *info,
1556 struct synaptics_data *priv;
1559 synaptics_apply_quirks(psmouse, info);
1561 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1566 priv->absolute_mode = absolute_mode;
1567 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1568 priv->disable_gesture = true;
1571 * Unfortunately ForcePad capability is not exported over PS/2,
1572 * so we have to resort to checking PNP IDs.
1574 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1576 err = synaptics_set_mode(psmouse);
1578 psmouse_err(psmouse, "Unable to initialize device.\n");
1582 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1583 SYN_NEWABS : SYN_OLDABS;
1585 psmouse_info(psmouse,
1586 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1587 SYN_ID_MODEL(info->identity),
1588 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1590 info->capabilities, info->ext_cap, info->ext_cap_0c,
1591 info->ext_cap_10, info->board_id, info->firmware_id);
1593 err = set_input_params(psmouse, priv);
1595 psmouse_err(psmouse,
1596 "failed to set up capabilities: %d\n", err);
1601 * Encode touchpad model so that it can be used to set
1602 * input device->id.version and be visible to userspace.
1603 * Because version is __u16 we have to drop something.
1604 * Hardware info bits seem to be good candidates as they
1605 * are documented to be for Synaptics corp. internal use.
1607 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1608 (info->model_id & 0x000000ff);
1610 if (absolute_mode) {
1611 psmouse->protocol_handler = synaptics_process_byte;
1612 psmouse->pktsize = 6;
1614 /* Relative mode follows standard PS/2 mouse protocol */
1615 psmouse->protocol_handler = psmouse_process_byte;
1616 psmouse->pktsize = 3;
1619 psmouse->set_rate = synaptics_set_rate;
1620 psmouse->disconnect = synaptics_disconnect;
1621 psmouse->reconnect = synaptics_reconnect;
1622 psmouse->fast_reconnect = NULL;
1623 psmouse->cleanup = synaptics_reset;
1624 /* Synaptics can usually stay in sync without extra help */
1625 psmouse->resync_time = 0;
1627 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1628 synaptics_pt_create(psmouse);
1631 * Toshiba's KBC seems to have trouble handling data from
1632 * Synaptics at full rate. Switch to a lower rate (roughly
1633 * the same rate as a standard PS/2 mouse).
1635 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1636 psmouse_info(psmouse,
1637 "Toshiba %s detected, limiting rate to 40pps.\n",
1638 dmi_get_system_info(DMI_PRODUCT_NAME));
1642 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1643 err = device_create_file(&psmouse->ps2dev.serio->dev,
1644 &psmouse_attr_disable_gesture.dattr);
1646 psmouse_err(psmouse,
1647 "Failed to create disable_gesture attribute (%d)",
1660 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1662 struct synaptics_device_info info;
1665 psmouse_reset(psmouse);
1667 error = synaptics_query_hardware(psmouse, &info);
1669 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1673 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1676 int synaptics_init_absolute(struct psmouse *psmouse)
1678 return __synaptics_init(psmouse, true);
1681 int synaptics_init_relative(struct psmouse *psmouse)
1683 return __synaptics_init(psmouse, false);
1686 static int synaptics_setup_ps2(struct psmouse *psmouse,
1687 struct synaptics_device_info *info)
1689 bool absolute_mode = true;
1693 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1694 * packet spew overloads the EC such that key presses on the keyboard
1695 * are missed. Given that, don't even attempt to use Absolute mode.
1696 * Relative mode seems to work just fine.
1698 if (broken_olpc_ec) {
1699 psmouse_info(psmouse,
1700 "OLPC XO detected, forcing relative protocol.\n");
1701 absolute_mode = false;
1704 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1708 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1711 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1713 void __init synaptics_module_init(void)
1717 static int __maybe_unused
1718 synaptics_setup_ps2(struct psmouse *psmouse,
1719 struct synaptics_device_info *info)
1724 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1726 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1729 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1730 * provides a better bandwidth and allow a better control of the touchpads.
1731 * This is used to decide if we need to use this bus or not.
1734 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1735 SYNAPTICS_INTERTOUCH_OFF,
1736 SYNAPTICS_INTERTOUCH_ON,
1739 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1740 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1741 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1742 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1744 static int synaptics_create_intertouch(struct psmouse *psmouse,
1745 struct synaptics_device_info *info,
1746 bool leave_breadcrumbs)
1749 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1750 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1751 const struct rmi_device_platform_data pdata = {
1752 .reset_delay_ms = 30,
1754 .sensor_type = rmi_sensor_touchpad,
1755 .axis_align.flip_y = true,
1756 .kernel_tracking = false,
1757 .topbuttonpad = topbuttonpad,
1760 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1761 .trackstick_buttons =
1762 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1765 const struct i2c_board_info intertouch_board = {
1766 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1767 .flags = I2C_CLIENT_HOST_NOTIFY,
1770 return psmouse_smbus_init(psmouse, &intertouch_board,
1771 &pdata, sizeof(pdata), true,
1776 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1777 * and decides to instantiate a SMBus InterTouch device.
1779 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1780 struct synaptics_device_info *info,
1781 bool leave_breadcrumbs)
1785 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1788 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1789 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1790 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1792 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1793 psmouse_info(psmouse,
1794 "Your touchpad (%s) says it can support a different bus. "
1795 "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",
1796 psmouse->ps2dev.serio->firmware_id);
1802 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1804 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1806 if (error == -EAGAIN)
1807 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1809 psmouse_err(psmouse, "unable to create intertouch device\n");
1817 int synaptics_init_smbus(struct psmouse *psmouse)
1819 struct synaptics_device_info info;
1822 psmouse_reset(psmouse);
1824 error = synaptics_query_hardware(psmouse, &info);
1826 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1830 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1833 return synaptics_create_intertouch(psmouse, &info, false);
1836 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1838 static int __maybe_unused
1839 synaptics_setup_intertouch(struct psmouse *psmouse,
1840 struct synaptics_device_info *info,
1841 bool leave_breadcrumbs)
1846 int synaptics_init_smbus(struct psmouse *psmouse)
1851 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1853 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1854 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1856 int synaptics_init(struct psmouse *psmouse)
1858 struct synaptics_device_info info;
1862 psmouse_reset(psmouse);
1864 error = synaptics_query_hardware(psmouse, &info);
1866 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1870 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1871 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1872 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1873 /* Forcepads need F21, which is not ready */
1874 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1875 psmouse_warn(psmouse,
1876 "The touchpad can support a better bus than the too old PS/2 protocol. "
1877 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1880 error = synaptics_setup_intertouch(psmouse, &info, true);
1882 return PSMOUSE_SYNAPTICS_SMBUS;
1885 retval = synaptics_setup_ps2(psmouse, &info);
1888 * Not using any flavor of Synaptics support, so clean up
1889 * SMbus breadcrumbs, if any.
1891 psmouse_smbus_cleanup(psmouse);
1897 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1899 int synaptics_init(struct psmouse *psmouse)
1904 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */