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 "LEN0071", /* T480 */
174 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
175 "LEN0073", /* X1 Carbon G5 (Elantech) */
176 "LEN0091", /* X1 Carbon 6 */
177 "LEN0092", /* X1 Carbon 6 */
178 "LEN0093", /* T480 */
179 "LEN0096", /* X280 */
180 "LEN0097", /* X280 -> ALPS trackpoint */
181 "LEN009b", /* T580 */
182 "LEN200f", /* T450s */
183 "LEN2044", /* L470 */
184 "LEN2054", /* E480 */
185 "LEN2055", /* E580 */
186 "SYN3052", /* HP EliteBook 840 G4 */
187 "SYN3221", /* HP 15-ay000 */
188 "SYN323d", /* HP Spectre X360 13-w013dx */
192 static const char * const forcepad_pnp_ids[] = {
199 * Send a command to the synaptics touchpad by special commands
201 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
205 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
209 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
216 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
224 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
228 *val = be32_to_cpu(resp.be_val);
234 * See also the SYN_ID_* macros
236 static int synaptics_identify(struct psmouse *psmouse,
237 struct synaptics_device_info *info)
241 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
245 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
249 * Read the model-id bytes from the touchpad
250 * see also SYN_MODEL_* macros
252 static int synaptics_model_id(struct psmouse *psmouse,
253 struct synaptics_device_info *info)
255 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
259 * Read the firmware id from the touchpad
261 static int synaptics_firmware_id(struct psmouse *psmouse,
262 struct synaptics_device_info *info)
264 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
269 * Read the board id and the "More Extended Queries" from the touchpad
270 * The board id is encoded in the "QUERY MODES" response
272 static int synaptics_query_modes(struct psmouse *psmouse,
273 struct synaptics_device_info *info)
278 /* firmwares prior 7.5 have no board_id encoded */
279 if (SYN_ID_FULL(info->identity) < 0x705)
282 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
286 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
288 if (SYN_MEXT_CAP_BIT(bid[0]))
289 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
296 * Read the capability-bits from the touchpad
297 * see also the SYN_CAP_* macros
299 static int synaptics_capability(struct psmouse *psmouse,
300 struct synaptics_device_info *info)
304 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
305 &info->capabilities);
309 info->ext_cap = info->ext_cap_0c = 0;
312 * Older firmwares had submodel ID fixed to 0x47
314 if (SYN_ID_FULL(info->identity) < 0x705 &&
315 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
320 * Unless capExtended is set the rest of the flags should be ignored
322 if (!SYN_CAP_EXTENDED(info->capabilities))
323 info->capabilities = 0;
325 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
326 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
329 psmouse_warn(psmouse,
330 "device claims to have extended capabilities, but I'm not able to read them.\n");
333 * if nExtBtn is greater than 8 it should be considered
334 * invalid and treated as 0
336 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
337 info->ext_cap &= ~SYN_CAP_MB_MASK;
341 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
342 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
345 psmouse_warn(psmouse,
346 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
353 * Read touchpad resolution and maximum reported coordinates
354 * Resolution is left zero if touchpad does not support the query
356 static int synaptics_resolution(struct psmouse *psmouse,
357 struct synaptics_device_info *info)
362 if (SYN_ID_MAJOR(info->identity) < 4)
365 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
367 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
368 info->x_res = resp[0]; /* x resolution in units/mm */
369 info->y_res = resp[2]; /* y resolution in units/mm */
373 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
374 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
375 error = synaptics_send_cmd(psmouse,
376 SYN_QUE_EXT_MAX_COORDS, resp);
378 psmouse_warn(psmouse,
379 "device claims to have max coordinates query, but I'm not able to read it.\n");
381 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
382 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
383 psmouse_info(psmouse,
384 "queried max coordinates: x [..%d], y [..%d]\n",
385 info->x_max, info->y_max);
389 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
390 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
392 * Firmware v8.1 does not report proper number of extended
393 * capabilities, but has been proven to report correct min
396 SYN_ID_FULL(info->identity) == 0x801)) {
397 error = synaptics_send_cmd(psmouse,
398 SYN_QUE_EXT_MIN_COORDS, resp);
400 psmouse_warn(psmouse,
401 "device claims to have min coordinates query, but I'm not able to read it.\n");
403 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
404 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
405 psmouse_info(psmouse,
406 "queried min coordinates: x [%d..], y [%d..]\n",
407 info->x_min, info->y_min);
414 static int synaptics_query_hardware(struct psmouse *psmouse,
415 struct synaptics_device_info *info)
419 memset(info, 0, sizeof(*info));
421 error = synaptics_identify(psmouse, info);
425 error = synaptics_model_id(psmouse, info);
429 error = synaptics_firmware_id(psmouse, info);
433 error = synaptics_query_modes(psmouse, info);
437 error = synaptics_capability(psmouse, info);
441 error = synaptics_resolution(psmouse, info);
448 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
450 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
452 static bool cr48_profile_sensor;
454 #define ANY_BOARD_ID 0
455 struct min_max_quirk {
456 const char * const *pnp_ids;
460 u32 x_min, x_max, y_min, y_max;
463 static const struct min_max_quirk min_max_pnpid_table[] = {
465 (const char * const []){"LEN0033", NULL},
466 {ANY_BOARD_ID, ANY_BOARD_ID},
467 1024, 5052, 2258, 4832
470 (const char * const []){"LEN0042", NULL},
471 {ANY_BOARD_ID, ANY_BOARD_ID},
472 1232, 5710, 1156, 4696
475 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
476 "LEN0039", "LEN2002", "LEN2004",
478 {ANY_BOARD_ID, 2961},
479 1024, 5112, 2024, 4832
482 (const char * const []){"LEN2000", NULL},
483 {ANY_BOARD_ID, ANY_BOARD_ID},
484 1024, 5113, 2021, 4832
487 (const char * const []){"LEN2001", NULL},
488 {ANY_BOARD_ID, ANY_BOARD_ID},
489 1024, 5022, 2508, 4832
492 (const char * const []){"LEN2006", NULL},
494 1024, 5045, 2457, 4832
497 (const char * const []){"LEN2006", NULL},
498 {ANY_BOARD_ID, ANY_BOARD_ID},
499 1264, 5675, 1171, 4688
504 /*****************************************************************************
505 * Synaptics communications functions
506 ****************************************************************************/
509 * Synaptics touchpads report the y coordinate from bottom to top, which is
510 * opposite from what userspace expects.
511 * This function is used to invert y before reporting.
513 static int synaptics_invert_y(int y)
515 return YMAX_NOMINAL + YMIN_NOMINAL - y;
519 * Apply quirk(s) if the hardware matches
521 static void synaptics_apply_quirks(struct psmouse *psmouse,
522 struct synaptics_device_info *info)
526 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
527 if (!psmouse_matches_pnp_id(psmouse,
528 min_max_pnpid_table[i].pnp_ids))
531 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
532 info->board_id < min_max_pnpid_table[i].board_id.min)
535 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
536 info->board_id > min_max_pnpid_table[i].board_id.max)
539 info->x_min = min_max_pnpid_table[i].x_min;
540 info->x_max = min_max_pnpid_table[i].x_max;
541 info->y_min = min_max_pnpid_table[i].y_min;
542 info->y_max = min_max_pnpid_table[i].y_max;
543 psmouse_info(psmouse,
544 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
545 info->x_min, info->x_max,
546 info->y_min, info->y_max);
551 static bool synaptics_has_agm(struct synaptics_data *priv)
553 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
554 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
557 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
559 static u8 param = 0xc8;
562 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
566 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
573 static int synaptics_set_mode(struct psmouse *psmouse)
575 struct synaptics_data *priv = psmouse->private;
579 if (priv->absolute_mode)
580 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
581 if (priv->disable_gesture)
582 priv->mode |= SYN_BIT_DISABLE_GESTURE;
583 if (psmouse->rate >= 80)
584 priv->mode |= SYN_BIT_HIGH_RATE;
585 if (SYN_CAP_EXTENDED(priv->info.capabilities))
586 priv->mode |= SYN_BIT_W_MODE;
588 error = synaptics_mode_cmd(psmouse, priv->mode);
592 if (priv->absolute_mode && synaptics_has_agm(priv)) {
593 error = synaptics_set_advanced_gesture_mode(psmouse);
596 "Advanced gesture mode init failed: %d\n",
605 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
607 struct synaptics_data *priv = psmouse->private;
610 priv->mode |= SYN_BIT_HIGH_RATE;
613 priv->mode &= ~SYN_BIT_HIGH_RATE;
617 synaptics_mode_cmd(psmouse, priv->mode);
620 /*****************************************************************************
621 * Synaptics pass-through PS/2 port support
622 ****************************************************************************/
623 static int synaptics_pt_write(struct serio *serio, u8 c)
625 struct psmouse *parent = serio_get_drvdata(serio->parent);
626 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
629 error = ps2_sliced_command(&parent->ps2dev, c);
633 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
640 static int synaptics_pt_start(struct serio *serio)
642 struct psmouse *parent = serio_get_drvdata(serio->parent);
643 struct synaptics_data *priv = parent->private;
645 serio_pause_rx(parent->ps2dev.serio);
646 priv->pt_port = serio;
647 serio_continue_rx(parent->ps2dev.serio);
652 static void synaptics_pt_stop(struct serio *serio)
654 struct psmouse *parent = serio_get_drvdata(serio->parent);
655 struct synaptics_data *priv = parent->private;
657 serio_pause_rx(parent->ps2dev.serio);
658 priv->pt_port = NULL;
659 serio_continue_rx(parent->ps2dev.serio);
662 static int synaptics_is_pt_packet(u8 *buf)
664 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
667 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
669 struct psmouse *child = serio_get_drvdata(ptport);
671 if (child && child->state == PSMOUSE_ACTIVATED) {
672 serio_interrupt(ptport, packet[1], 0);
673 serio_interrupt(ptport, packet[4], 0);
674 serio_interrupt(ptport, packet[5], 0);
675 if (child->pktsize == 4)
676 serio_interrupt(ptport, packet[2], 0);
678 serio_interrupt(ptport, packet[1], 0);
682 static void synaptics_pt_activate(struct psmouse *psmouse)
684 struct synaptics_data *priv = psmouse->private;
685 struct psmouse *child = serio_get_drvdata(priv->pt_port);
687 /* adjust the touchpad to child's choice of protocol */
689 if (child->pktsize == 4)
690 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
692 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
694 if (synaptics_mode_cmd(psmouse, priv->mode))
695 psmouse_warn(psmouse,
696 "failed to switch guest protocol\n");
700 static void synaptics_pt_create(struct psmouse *psmouse)
704 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
707 "not enough memory for pass-through port\n");
711 serio->id.type = SERIO_PS_PSTHRU;
712 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
713 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
714 serio->write = synaptics_pt_write;
715 serio->start = synaptics_pt_start;
716 serio->stop = synaptics_pt_stop;
717 serio->parent = psmouse->ps2dev.serio;
719 psmouse->pt_activate = synaptics_pt_activate;
721 psmouse_info(psmouse, "serio: %s port at %s\n",
722 serio->name, psmouse->phys);
723 serio_register_port(serio);
726 /*****************************************************************************
727 * Functions to interpret the absolute mode packets
728 ****************************************************************************/
730 static void synaptics_parse_agm(const u8 buf[],
731 struct synaptics_data *priv,
732 struct synaptics_hw_state *hw)
734 struct synaptics_hw_state *agm = &priv->agm;
737 agm_packet_type = (buf[5] & 0x30) >> 4;
738 switch (agm_packet_type) {
740 /* Gesture packet: (x, y, z) half resolution */
742 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
743 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
744 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
748 /* AGM-CONTACT packet: we are only interested in the count */
749 priv->agm_count = buf[1];
757 static void synaptics_parse_ext_buttons(const u8 buf[],
758 struct synaptics_data *priv,
759 struct synaptics_hw_state *hw)
761 unsigned int ext_bits =
762 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
763 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
765 hw->ext_buttons = buf[4] & ext_mask;
766 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
769 static int synaptics_parse_hw_state(const u8 buf[],
770 struct synaptics_data *priv,
771 struct synaptics_hw_state *hw)
773 memset(hw, 0, sizeof(struct synaptics_hw_state));
775 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
776 hw->w = (((buf[0] & 0x30) >> 2) |
777 ((buf[0] & 0x04) >> 1) |
778 ((buf[3] & 0x04) >> 2));
780 if (synaptics_has_agm(priv) && hw->w == 2) {
781 synaptics_parse_agm(buf, priv, hw);
785 hw->x = (((buf[3] & 0x10) << 8) |
786 ((buf[1] & 0x0f) << 8) |
788 hw->y = (((buf[3] & 0x20) << 7) |
789 ((buf[1] & 0xf0) << 4) |
793 hw->left = (buf[0] & 0x01) ? 1 : 0;
794 hw->right = (buf[0] & 0x02) ? 1 : 0;
796 if (priv->is_forcepad) {
798 * ForcePads, like Clickpads, use middle button
799 * bits to report primary button clicks.
800 * Unfortunately they report primary button not
801 * only when user presses on the pad above certain
802 * threshold, but also when there are more than one
803 * finger on the touchpad, which interferes with
804 * out multi-finger gestures.
808 priv->press = priv->report_press = false;
809 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
811 * Single-finger touch with pressure above
812 * the threshold. If pressure stays long
813 * enough, we'll start reporting primary
814 * button. We rely on the device continuing
815 * sending data even if finger does not
819 priv->press_start = jiffies;
821 } else if (time_after(jiffies,
823 msecs_to_jiffies(50))) {
824 priv->report_press = true;
830 hw->left = priv->report_press;
832 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
834 * Clickpad's button is transmitted as middle button,
835 * however, since it is primary button, we will report
838 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
840 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
841 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
843 hw->scroll = (s8)buf[1];
846 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
847 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
848 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
851 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
852 ((buf[0] ^ buf[3]) & 0x02)) {
853 synaptics_parse_ext_buttons(buf, priv, hw);
856 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
857 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
859 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
860 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
862 hw->left = (buf[0] & 0x01) ? 1 : 0;
863 hw->right = (buf[0] & 0x02) ? 1 : 0;
867 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
868 * is used by some firmware to indicate a finger at the edge of
869 * the touchpad whose precise position cannot be determined, so
870 * convert these values to the maximum axis value.
872 if (hw->x > X_MAX_POSITIVE)
873 hw->x -= 1 << ABS_POS_BITS;
874 else if (hw->x == X_MAX_POSITIVE)
877 if (hw->y > Y_MAX_POSITIVE)
878 hw->y -= 1 << ABS_POS_BITS;
879 else if (hw->y == Y_MAX_POSITIVE)
885 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
886 bool active, int x, int y)
888 input_mt_slot(dev, slot);
889 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
891 input_report_abs(dev, ABS_MT_POSITION_X, x);
892 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
896 static void synaptics_report_semi_mt_data(struct input_dev *dev,
897 const struct synaptics_hw_state *a,
898 const struct synaptics_hw_state *b,
901 if (num_fingers >= 2) {
902 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
904 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
906 } else if (num_fingers == 1) {
907 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
908 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
910 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
911 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
915 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
916 const struct synaptics_hw_state *hw)
918 struct input_dev *dev = psmouse->dev;
919 struct synaptics_data *priv = psmouse->private;
920 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
923 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
926 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
927 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
928 SYN_ID_FULL(priv->info.identity) == 0x802) &&
929 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
932 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
933 for (i = 0; i < ext_bits; i++) {
934 input_report_key(dev, BTN_0 + 2 * i,
935 hw->ext_buttons & BIT(i));
936 input_report_key(dev, BTN_1 + 2 * i,
937 hw->ext_buttons & BIT(i + ext_bits));
943 * This generation of touchpads has the trackstick buttons
944 * physically wired to the touchpad. Re-route them through
945 * the pass-through interface.
950 /* The trackstick expects at most 3 buttons */
951 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
952 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
953 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
955 serio_interrupt(priv->pt_port,
956 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
957 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
961 static void synaptics_report_buttons(struct psmouse *psmouse,
962 const struct synaptics_hw_state *hw)
964 struct input_dev *dev = psmouse->dev;
965 struct synaptics_data *priv = psmouse->private;
967 input_report_key(dev, BTN_LEFT, hw->left);
968 input_report_key(dev, BTN_RIGHT, hw->right);
970 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
971 input_report_key(dev, BTN_MIDDLE, hw->middle);
973 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
974 input_report_key(dev, BTN_FORWARD, hw->up);
975 input_report_key(dev, BTN_BACK, hw->down);
978 synaptics_report_ext_buttons(psmouse, hw);
981 static void synaptics_report_mt_data(struct psmouse *psmouse,
982 const struct synaptics_hw_state *sgm,
985 struct input_dev *dev = psmouse->dev;
986 struct synaptics_data *priv = psmouse->private;
987 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
988 struct input_mt_pos pos[2];
989 int slot[2], nsemi, i;
991 nsemi = clamp_val(num_fingers, 0, 2);
993 for (i = 0; i < nsemi; i++) {
995 pos[i].y = synaptics_invert_y(hw[i]->y);
998 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
1000 for (i = 0; i < nsemi; i++) {
1001 input_mt_slot(dev, slot[i]);
1002 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1003 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1004 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1005 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1008 input_mt_drop_unused(dev);
1010 /* Don't use active slot count to generate BTN_TOOL events. */
1011 input_mt_report_pointer_emulation(dev, false);
1013 /* Send the number of fingers reported by touchpad itself. */
1014 input_mt_report_finger_count(dev, num_fingers);
1016 synaptics_report_buttons(psmouse, sgm);
1021 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1022 struct synaptics_hw_state *sgm)
1024 struct synaptics_data *priv = psmouse->private;
1028 * Update mt_state using the new finger count and current mt_state.
1032 else if (sgm->w >= 4)
1034 else if (sgm->w == 0)
1036 else if (sgm->w == 1)
1037 num_fingers = priv->agm_count ? priv->agm_count : 3;
1041 /* Send resulting input events to user space */
1042 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1045 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1047 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1050 /* Advanced gesture mode also sends multi finger data */
1051 return synaptics_has_agm(priv);
1055 * called for each full received packet from the touchpad
1057 static void synaptics_process_packet(struct psmouse *psmouse)
1059 struct input_dev *dev = psmouse->dev;
1060 struct synaptics_data *priv = psmouse->private;
1061 struct synaptics_device_info *info = &priv->info;
1062 struct synaptics_hw_state hw;
1066 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1069 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1070 synaptics_image_sensor_process(psmouse, &hw);
1075 priv->scroll += hw.scroll;
1077 while (priv->scroll >= 4) {
1078 input_report_key(dev, BTN_BACK, !hw.down);
1080 input_report_key(dev, BTN_BACK, hw.down);
1084 while (priv->scroll <= -4) {
1085 input_report_key(dev, BTN_FORWARD, !hw.up);
1087 input_report_key(dev, BTN_FORWARD, hw.up);
1094 if (hw.z > 0 && hw.x > 1) {
1097 if (SYN_CAP_EXTENDED(info->capabilities)) {
1100 if (synaptics_has_multifinger(priv))
1101 num_fingers = hw.w + 2;
1104 if (SYN_MODEL_PEN(info->model_id))
1105 ; /* Nothing, treat a pen as a single finger */
1108 if (SYN_CAP_PALMDETECT(info->capabilities))
1109 finger_width = hw.w;
1118 if (cr48_profile_sensor) {
1119 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1123 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1124 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1128 * BTN_TOUCH has to be first as mousedev relies on it when doing
1129 * absolute -> relative conversion
1131 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1132 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1134 if (num_fingers > 0) {
1135 input_report_abs(dev, ABS_X, hw.x);
1136 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1138 input_report_abs(dev, ABS_PRESSURE, hw.z);
1140 if (SYN_CAP_PALMDETECT(info->capabilities))
1141 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1143 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1144 if (synaptics_has_multifinger(priv)) {
1145 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1146 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1149 synaptics_report_buttons(psmouse, &hw);
1154 static bool synaptics_validate_byte(struct psmouse *psmouse,
1155 int idx, enum synaptics_pkt_type pkt_type)
1157 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1158 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1159 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1160 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1161 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1162 const u8 *packet = psmouse->packet;
1164 if (idx < 0 || idx > 4)
1170 case SYN_NEWABS_RELAXED:
1171 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1173 case SYN_NEWABS_STRICT:
1174 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1177 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1180 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1185 static enum synaptics_pkt_type
1186 synaptics_detect_pkt_type(struct psmouse *psmouse)
1190 for (i = 0; i < 5; i++) {
1191 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1192 psmouse_info(psmouse, "using relaxed packet validation\n");
1193 return SYN_NEWABS_RELAXED;
1197 return SYN_NEWABS_STRICT;
1200 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1202 struct synaptics_data *priv = psmouse->private;
1204 if (psmouse->pktcnt >= 6) { /* Full packet received */
1205 if (unlikely(priv->pkt_type == SYN_NEWABS))
1206 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1208 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1209 synaptics_is_pt_packet(psmouse->packet)) {
1211 synaptics_pass_pt_packet(priv->pt_port,
1214 synaptics_process_packet(psmouse);
1216 return PSMOUSE_FULL_PACKET;
1219 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1220 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1223 /*****************************************************************************
1224 * Driver initialization/cleanup functions
1225 ****************************************************************************/
1226 static void set_abs_position_params(struct input_dev *dev,
1227 struct synaptics_device_info *info,
1228 int x_code, int y_code)
1230 int x_min = info->x_min ?: XMIN_NOMINAL;
1231 int x_max = info->x_max ?: XMAX_NOMINAL;
1232 int y_min = info->y_min ?: YMIN_NOMINAL;
1233 int y_max = info->y_max ?: YMAX_NOMINAL;
1234 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1235 SYN_REDUCED_FILTER_FUZZ : 0;
1237 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1238 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1239 input_abs_set_res(dev, x_code, info->x_res);
1240 input_abs_set_res(dev, y_code, info->y_res);
1243 static int set_input_params(struct psmouse *psmouse,
1244 struct synaptics_data *priv)
1246 struct input_dev *dev = psmouse->dev;
1247 struct synaptics_device_info *info = &priv->info;
1251 /* Reset default psmouse capabilities */
1252 __clear_bit(EV_REL, dev->evbit);
1253 bitmap_zero(dev->relbit, REL_CNT);
1254 bitmap_zero(dev->keybit, KEY_CNT);
1256 /* Things that apply to both modes */
1257 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1259 input_set_capability(dev, EV_KEY, BTN_LEFT);
1261 /* Clickpads report only left button */
1262 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1263 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1264 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1265 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1268 if (!priv->absolute_mode) {
1270 input_set_capability(dev, EV_REL, REL_X);
1271 input_set_capability(dev, EV_REL, REL_Y);
1276 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1277 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1279 if (cr48_profile_sensor)
1280 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1282 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1283 set_abs_position_params(dev, info,
1284 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1285 /* Image sensors can report per-contact pressure */
1286 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1288 error = input_mt_init_slots(dev, 2,
1289 INPUT_MT_POINTER | INPUT_MT_TRACK);
1293 /* Image sensors can signal 4 and 5 finger clicks */
1294 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1295 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1296 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1297 set_abs_position_params(dev, info,
1298 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1300 * Profile sensor in CR-48 tracks contacts reasonably well,
1301 * other non-image sensors with AGM use semi-mt.
1303 error = input_mt_init_slots(dev, 2,
1305 (cr48_profile_sensor ?
1312 * For semi-mt devices we send ABS_X/Y ourselves instead of
1313 * input_mt_report_pointer_emulation. But
1314 * input_mt_init_slots() resets the fuzz to 0, leading to a
1315 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1316 * position. Let's re-initialize ABS_X/Y here.
1318 if (!cr48_profile_sensor)
1319 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1322 if (SYN_CAP_PALMDETECT(info->capabilities))
1323 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1325 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1326 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1328 if (synaptics_has_multifinger(priv)) {
1329 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1330 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1333 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1334 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1335 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1336 input_set_capability(dev, EV_KEY, BTN_BACK);
1339 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1340 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1341 input_set_capability(dev, EV_KEY, BTN_0 + i);
1343 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1344 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1345 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1346 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1347 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1353 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1354 void *data, char *buf)
1356 struct synaptics_data *priv = psmouse->private;
1358 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1361 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1362 void *data, const char *buf,
1365 struct synaptics_data *priv = psmouse->private;
1369 err = kstrtouint(buf, 10, &value);
1376 if (value == priv->disable_gesture)
1379 priv->disable_gesture = value;
1381 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1383 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1385 if (synaptics_mode_cmd(psmouse, priv->mode))
1391 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1392 synaptics_show_disable_gesture,
1393 synaptics_set_disable_gesture);
1395 static void synaptics_disconnect(struct psmouse *psmouse)
1397 struct synaptics_data *priv = psmouse->private;
1400 * We might have left a breadcrumb when trying to
1401 * set up SMbus companion.
1403 psmouse_smbus_cleanup(psmouse);
1405 if (!priv->absolute_mode &&
1406 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1407 device_remove_file(&psmouse->ps2dev.serio->dev,
1408 &psmouse_attr_disable_gesture.dattr);
1410 synaptics_reset(psmouse);
1412 psmouse->private = NULL;
1415 static int synaptics_reconnect(struct psmouse *psmouse)
1417 struct synaptics_data *priv = psmouse->private;
1418 struct synaptics_device_info info;
1424 psmouse_reset(psmouse);
1427 * On some boxes, right after resuming, the touchpad
1428 * needs some time to finish initializing (I assume
1429 * it needs time to calibrate) and start responding
1430 * to Synaptics-specific queries, so let's wait a
1435 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1436 error = synaptics_detect(psmouse, 0);
1437 } while (error && ++retry < 3);
1443 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1445 error = synaptics_query_hardware(psmouse, &info);
1447 psmouse_err(psmouse, "Unable to query device.\n");
1451 error = synaptics_set_mode(psmouse);
1453 psmouse_err(psmouse, "Unable to initialize device.\n");
1457 if (info.identity != priv->info.identity ||
1458 info.model_id != priv->info.model_id ||
1459 info.capabilities != priv->info.capabilities ||
1460 info.ext_cap != priv->info.ext_cap) {
1461 psmouse_err(psmouse,
1462 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1463 priv->info.identity, info.identity,
1464 priv->info.model_id, info.model_id,
1465 priv->info.capabilities, info.capabilities,
1466 priv->info.ext_cap, info.ext_cap);
1473 static bool impaired_toshiba_kbc;
1475 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1476 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1478 /* Toshiba Satellite */
1480 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1481 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1485 /* Toshiba Dynabook */
1487 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1488 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1492 /* Toshiba Portege M300 */
1494 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1495 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1500 /* Toshiba Portege M300 */
1502 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1503 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1504 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1512 static bool broken_olpc_ec;
1514 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1515 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1517 /* OLPC XO-1 or XO-1.5 */
1519 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1520 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1527 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1528 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1530 /* Cr-48 Chromebook (Codename Mario) */
1532 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1533 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1540 void __init synaptics_module_init(void)
1542 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1543 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1544 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1547 static int synaptics_init_ps2(struct psmouse *psmouse,
1548 struct synaptics_device_info *info,
1551 struct synaptics_data *priv;
1554 synaptics_apply_quirks(psmouse, info);
1556 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1561 priv->absolute_mode = absolute_mode;
1562 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1563 priv->disable_gesture = true;
1566 * Unfortunately ForcePad capability is not exported over PS/2,
1567 * so we have to resort to checking PNP IDs.
1569 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1571 err = synaptics_set_mode(psmouse);
1573 psmouse_err(psmouse, "Unable to initialize device.\n");
1577 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1578 SYN_NEWABS : SYN_OLDABS;
1580 psmouse_info(psmouse,
1581 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1582 SYN_ID_MODEL(info->identity),
1583 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1585 info->capabilities, info->ext_cap, info->ext_cap_0c,
1586 info->ext_cap_10, info->board_id, info->firmware_id);
1588 err = set_input_params(psmouse, priv);
1590 psmouse_err(psmouse,
1591 "failed to set up capabilities: %d\n", err);
1596 * Encode touchpad model so that it can be used to set
1597 * input device->id.version and be visible to userspace.
1598 * Because version is __u16 we have to drop something.
1599 * Hardware info bits seem to be good candidates as they
1600 * are documented to be for Synaptics corp. internal use.
1602 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1603 (info->model_id & 0x000000ff);
1605 if (absolute_mode) {
1606 psmouse->protocol_handler = synaptics_process_byte;
1607 psmouse->pktsize = 6;
1609 /* Relative mode follows standard PS/2 mouse protocol */
1610 psmouse->protocol_handler = psmouse_process_byte;
1611 psmouse->pktsize = 3;
1614 psmouse->set_rate = synaptics_set_rate;
1615 psmouse->disconnect = synaptics_disconnect;
1616 psmouse->reconnect = synaptics_reconnect;
1617 psmouse->cleanup = synaptics_reset;
1618 /* Synaptics can usually stay in sync without extra help */
1619 psmouse->resync_time = 0;
1621 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1622 synaptics_pt_create(psmouse);
1625 * Toshiba's KBC seems to have trouble handling data from
1626 * Synaptics at full rate. Switch to a lower rate (roughly
1627 * the same rate as a standard PS/2 mouse).
1629 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1630 psmouse_info(psmouse,
1631 "Toshiba %s detected, limiting rate to 40pps.\n",
1632 dmi_get_system_info(DMI_PRODUCT_NAME));
1636 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1637 err = device_create_file(&psmouse->ps2dev.serio->dev,
1638 &psmouse_attr_disable_gesture.dattr);
1640 psmouse_err(psmouse,
1641 "Failed to create disable_gesture attribute (%d)",
1654 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1656 struct synaptics_device_info info;
1659 psmouse_reset(psmouse);
1661 error = synaptics_query_hardware(psmouse, &info);
1663 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1667 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1670 int synaptics_init_absolute(struct psmouse *psmouse)
1672 return __synaptics_init(psmouse, true);
1675 int synaptics_init_relative(struct psmouse *psmouse)
1677 return __synaptics_init(psmouse, false);
1680 static int synaptics_setup_ps2(struct psmouse *psmouse,
1681 struct synaptics_device_info *info)
1683 bool absolute_mode = true;
1687 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1688 * packet spew overloads the EC such that key presses on the keyboard
1689 * are missed. Given that, don't even attempt to use Absolute mode.
1690 * Relative mode seems to work just fine.
1692 if (broken_olpc_ec) {
1693 psmouse_info(psmouse,
1694 "OLPC XO detected, forcing relative protocol.\n");
1695 absolute_mode = false;
1698 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1702 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1705 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1707 void __init synaptics_module_init(void)
1711 static int __maybe_unused
1712 synaptics_setup_ps2(struct psmouse *psmouse,
1713 struct synaptics_device_info *info)
1718 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1720 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1723 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1724 * provides a better bandwidth and allow a better control of the touchpads.
1725 * This is used to decide if we need to use this bus or not.
1728 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1729 SYNAPTICS_INTERTOUCH_OFF,
1730 SYNAPTICS_INTERTOUCH_ON,
1733 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1734 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1735 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1736 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1738 static int synaptics_create_intertouch(struct psmouse *psmouse,
1739 struct synaptics_device_info *info,
1740 bool leave_breadcrumbs)
1743 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1744 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1745 const struct rmi_device_platform_data pdata = {
1747 .sensor_type = rmi_sensor_touchpad,
1748 .axis_align.flip_y = true,
1749 .kernel_tracking = false,
1750 .topbuttonpad = topbuttonpad,
1753 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1754 .trackstick_buttons =
1755 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1758 const struct i2c_board_info intertouch_board = {
1759 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1760 .flags = I2C_CLIENT_HOST_NOTIFY,
1763 return psmouse_smbus_init(psmouse, &intertouch_board,
1764 &pdata, sizeof(pdata), true,
1769 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1770 * and decides to instantiate a SMBus InterTouch device.
1772 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1773 struct synaptics_device_info *info,
1774 bool leave_breadcrumbs)
1778 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1781 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1782 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1783 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1785 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1786 psmouse_info(psmouse,
1787 "Your touchpad (%s) says it can support a different bus. "
1788 "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",
1789 psmouse->ps2dev.serio->firmware_id);
1795 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1797 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1799 if (error == -EAGAIN)
1800 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1802 psmouse_err(psmouse, "unable to create intertouch device\n");
1810 int synaptics_init_smbus(struct psmouse *psmouse)
1812 struct synaptics_device_info info;
1815 psmouse_reset(psmouse);
1817 error = synaptics_query_hardware(psmouse, &info);
1819 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1823 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1826 return synaptics_create_intertouch(psmouse, &info, false);
1829 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1831 static int __maybe_unused
1832 synaptics_setup_intertouch(struct psmouse *psmouse,
1833 struct synaptics_device_info *info,
1834 bool leave_breadcrumbs)
1839 int synaptics_init_smbus(struct psmouse *psmouse)
1844 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1846 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1847 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1849 int synaptics_init(struct psmouse *psmouse)
1851 struct synaptics_device_info info;
1855 psmouse_reset(psmouse);
1857 error = synaptics_query_hardware(psmouse, &info);
1859 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1863 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1864 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1865 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1866 /* Forcepads need F21, which is not ready */
1867 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1868 psmouse_warn(psmouse,
1869 "The touchpad can support a better bus than the too old PS/2 protocol. "
1870 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1873 error = synaptics_setup_intertouch(psmouse, &info, true);
1875 return PSMOUSE_SYNAPTICS_SMBUS;
1878 retval = synaptics_setup_ps2(psmouse, &info);
1881 * Not using any flavor of Synaptics support, so clean up
1882 * SMbus breadcrumbs, if any.
1884 psmouse_smbus_cleanup(psmouse);
1890 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1892 int synaptics_init(struct psmouse *psmouse)
1897 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */