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 */
150 "LEN2000", /* S540 */
151 "LEN2001", /* Edge E431 */
152 "LEN2002", /* Edge E531 */
154 "LEN2004", /* L440 */
156 "LEN2006", /* Edge E440/E540 */
165 static const char * const smbus_pnp_ids[] = {
166 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
167 "LEN0048", /* X1 Carbon 3 */
168 "LEN0046", /* X250 */
169 "LEN004a", /* W541 */
171 "LEN005e", /* T560 */
172 "LEN0071", /* T480 */
173 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
174 "LEN0073", /* X1 Carbon G5 (Elantech) */
175 "LEN0092", /* X1 Carbon 6 */
176 "LEN0093", /* T480 */
177 "LEN0096", /* X280 */
178 "LEN0097", /* X280 -> ALPS trackpoint */
179 "LEN009b", /* T580 */
180 "LEN200f", /* T450s */
181 "LEN2054", /* E480 */
182 "LEN2055", /* E580 */
183 "SYN3052", /* HP EliteBook 840 G4 */
184 "SYN3221", /* HP 15-ay000 */
185 "SYN323d", /* HP Spectre X360 13-w013dx */
189 static const char * const forcepad_pnp_ids[] = {
196 * Send a command to the synaptics touchpad by special commands
198 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
202 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
206 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
213 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
221 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
225 *val = be32_to_cpu(resp.be_val);
231 * See also the SYN_ID_* macros
233 static int synaptics_identify(struct psmouse *psmouse,
234 struct synaptics_device_info *info)
238 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
242 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
246 * Read the model-id bytes from the touchpad
247 * see also SYN_MODEL_* macros
249 static int synaptics_model_id(struct psmouse *psmouse,
250 struct synaptics_device_info *info)
252 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
256 * Read the firmware id from the touchpad
258 static int synaptics_firmware_id(struct psmouse *psmouse,
259 struct synaptics_device_info *info)
261 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
266 * Read the board id and the "More Extended Queries" from the touchpad
267 * The board id is encoded in the "QUERY MODES" response
269 static int synaptics_query_modes(struct psmouse *psmouse,
270 struct synaptics_device_info *info)
275 /* firmwares prior 7.5 have no board_id encoded */
276 if (SYN_ID_FULL(info->identity) < 0x705)
279 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
283 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
285 if (SYN_MEXT_CAP_BIT(bid[0]))
286 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
293 * Read the capability-bits from the touchpad
294 * see also the SYN_CAP_* macros
296 static int synaptics_capability(struct psmouse *psmouse,
297 struct synaptics_device_info *info)
301 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
302 &info->capabilities);
306 info->ext_cap = info->ext_cap_0c = 0;
309 * Older firmwares had submodel ID fixed to 0x47
311 if (SYN_ID_FULL(info->identity) < 0x705 &&
312 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
317 * Unless capExtended is set the rest of the flags should be ignored
319 if (!SYN_CAP_EXTENDED(info->capabilities))
320 info->capabilities = 0;
322 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
323 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
326 psmouse_warn(psmouse,
327 "device claims to have extended capabilities, but I'm not able to read them.\n");
330 * if nExtBtn is greater than 8 it should be considered
331 * invalid and treated as 0
333 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
334 info->ext_cap &= ~SYN_CAP_MB_MASK;
338 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
339 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
342 psmouse_warn(psmouse,
343 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
350 * Read touchpad resolution and maximum reported coordinates
351 * Resolution is left zero if touchpad does not support the query
353 static int synaptics_resolution(struct psmouse *psmouse,
354 struct synaptics_device_info *info)
359 if (SYN_ID_MAJOR(info->identity) < 4)
362 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
364 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
365 info->x_res = resp[0]; /* x resolution in units/mm */
366 info->y_res = resp[2]; /* y resolution in units/mm */
370 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
371 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
372 error = synaptics_send_cmd(psmouse,
373 SYN_QUE_EXT_MAX_COORDS, resp);
375 psmouse_warn(psmouse,
376 "device claims to have max coordinates query, but I'm not able to read it.\n");
378 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
379 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
380 psmouse_info(psmouse,
381 "queried max coordinates: x [..%d], y [..%d]\n",
382 info->x_max, info->y_max);
386 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
387 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
389 * Firmware v8.1 does not report proper number of extended
390 * capabilities, but has been proven to report correct min
393 SYN_ID_FULL(info->identity) == 0x801)) {
394 error = synaptics_send_cmd(psmouse,
395 SYN_QUE_EXT_MIN_COORDS, resp);
397 psmouse_warn(psmouse,
398 "device claims to have min coordinates query, but I'm not able to read it.\n");
400 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
401 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
402 psmouse_info(psmouse,
403 "queried min coordinates: x [%d..], y [%d..]\n",
404 info->x_min, info->y_min);
411 static int synaptics_query_hardware(struct psmouse *psmouse,
412 struct synaptics_device_info *info)
416 memset(info, 0, sizeof(*info));
418 error = synaptics_identify(psmouse, info);
422 error = synaptics_model_id(psmouse, info);
426 error = synaptics_firmware_id(psmouse, info);
430 error = synaptics_query_modes(psmouse, info);
434 error = synaptics_capability(psmouse, info);
438 error = synaptics_resolution(psmouse, info);
445 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
447 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
449 static bool cr48_profile_sensor;
451 #define ANY_BOARD_ID 0
452 struct min_max_quirk {
453 const char * const *pnp_ids;
457 u32 x_min, x_max, y_min, y_max;
460 static const struct min_max_quirk min_max_pnpid_table[] = {
462 (const char * const []){"LEN0033", NULL},
463 {ANY_BOARD_ID, ANY_BOARD_ID},
464 1024, 5052, 2258, 4832
467 (const char * const []){"LEN0042", NULL},
468 {ANY_BOARD_ID, ANY_BOARD_ID},
469 1232, 5710, 1156, 4696
472 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
473 "LEN0039", "LEN2002", "LEN2004",
475 {ANY_BOARD_ID, 2961},
476 1024, 5112, 2024, 4832
479 (const char * const []){"LEN2000", NULL},
480 {ANY_BOARD_ID, ANY_BOARD_ID},
481 1024, 5113, 2021, 4832
484 (const char * const []){"LEN2001", NULL},
485 {ANY_BOARD_ID, ANY_BOARD_ID},
486 1024, 5022, 2508, 4832
489 (const char * const []){"LEN2006", NULL},
491 1024, 5045, 2457, 4832
494 (const char * const []){"LEN2006", NULL},
495 {ANY_BOARD_ID, ANY_BOARD_ID},
496 1264, 5675, 1171, 4688
501 /*****************************************************************************
502 * Synaptics communications functions
503 ****************************************************************************/
506 * Synaptics touchpads report the y coordinate from bottom to top, which is
507 * opposite from what userspace expects.
508 * This function is used to invert y before reporting.
510 static int synaptics_invert_y(int y)
512 return YMAX_NOMINAL + YMIN_NOMINAL - y;
516 * Apply quirk(s) if the hardware matches
518 static void synaptics_apply_quirks(struct psmouse *psmouse,
519 struct synaptics_device_info *info)
523 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
524 if (!psmouse_matches_pnp_id(psmouse,
525 min_max_pnpid_table[i].pnp_ids))
528 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
529 info->board_id < min_max_pnpid_table[i].board_id.min)
532 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
533 info->board_id > min_max_pnpid_table[i].board_id.max)
536 info->x_min = min_max_pnpid_table[i].x_min;
537 info->x_max = min_max_pnpid_table[i].x_max;
538 info->y_min = min_max_pnpid_table[i].y_min;
539 info->y_max = min_max_pnpid_table[i].y_max;
540 psmouse_info(psmouse,
541 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
542 info->x_min, info->x_max,
543 info->y_min, info->y_max);
548 static bool synaptics_has_agm(struct synaptics_data *priv)
550 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
551 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
554 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
556 static u8 param = 0xc8;
559 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
563 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
570 static int synaptics_set_mode(struct psmouse *psmouse)
572 struct synaptics_data *priv = psmouse->private;
576 if (priv->absolute_mode)
577 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
578 if (priv->disable_gesture)
579 priv->mode |= SYN_BIT_DISABLE_GESTURE;
580 if (psmouse->rate >= 80)
581 priv->mode |= SYN_BIT_HIGH_RATE;
582 if (SYN_CAP_EXTENDED(priv->info.capabilities))
583 priv->mode |= SYN_BIT_W_MODE;
585 error = synaptics_mode_cmd(psmouse, priv->mode);
589 if (priv->absolute_mode && synaptics_has_agm(priv)) {
590 error = synaptics_set_advanced_gesture_mode(psmouse);
593 "Advanced gesture mode init failed: %d\n",
602 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
604 struct synaptics_data *priv = psmouse->private;
607 priv->mode |= SYN_BIT_HIGH_RATE;
610 priv->mode &= ~SYN_BIT_HIGH_RATE;
614 synaptics_mode_cmd(psmouse, priv->mode);
617 /*****************************************************************************
618 * Synaptics pass-through PS/2 port support
619 ****************************************************************************/
620 static int synaptics_pt_write(struct serio *serio, u8 c)
622 struct psmouse *parent = serio_get_drvdata(serio->parent);
623 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
626 error = ps2_sliced_command(&parent->ps2dev, c);
630 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
637 static int synaptics_pt_start(struct serio *serio)
639 struct psmouse *parent = serio_get_drvdata(serio->parent);
640 struct synaptics_data *priv = parent->private;
642 serio_pause_rx(parent->ps2dev.serio);
643 priv->pt_port = serio;
644 serio_continue_rx(parent->ps2dev.serio);
649 static void synaptics_pt_stop(struct serio *serio)
651 struct psmouse *parent = serio_get_drvdata(serio->parent);
652 struct synaptics_data *priv = parent->private;
654 serio_pause_rx(parent->ps2dev.serio);
655 priv->pt_port = NULL;
656 serio_continue_rx(parent->ps2dev.serio);
659 static int synaptics_is_pt_packet(u8 *buf)
661 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
664 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
666 struct psmouse *child = serio_get_drvdata(ptport);
668 if (child && child->state == PSMOUSE_ACTIVATED) {
669 serio_interrupt(ptport, packet[1], 0);
670 serio_interrupt(ptport, packet[4], 0);
671 serio_interrupt(ptport, packet[5], 0);
672 if (child->pktsize == 4)
673 serio_interrupt(ptport, packet[2], 0);
675 serio_interrupt(ptport, packet[1], 0);
679 static void synaptics_pt_activate(struct psmouse *psmouse)
681 struct synaptics_data *priv = psmouse->private;
682 struct psmouse *child = serio_get_drvdata(priv->pt_port);
684 /* adjust the touchpad to child's choice of protocol */
686 if (child->pktsize == 4)
687 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
689 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
691 if (synaptics_mode_cmd(psmouse, priv->mode))
692 psmouse_warn(psmouse,
693 "failed to switch guest protocol\n");
697 static void synaptics_pt_create(struct psmouse *psmouse)
701 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
704 "not enough memory for pass-through port\n");
708 serio->id.type = SERIO_PS_PSTHRU;
709 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
710 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
711 serio->write = synaptics_pt_write;
712 serio->start = synaptics_pt_start;
713 serio->stop = synaptics_pt_stop;
714 serio->parent = psmouse->ps2dev.serio;
716 psmouse->pt_activate = synaptics_pt_activate;
718 psmouse_info(psmouse, "serio: %s port at %s\n",
719 serio->name, psmouse->phys);
720 serio_register_port(serio);
723 /*****************************************************************************
724 * Functions to interpret the absolute mode packets
725 ****************************************************************************/
727 static void synaptics_parse_agm(const u8 buf[],
728 struct synaptics_data *priv,
729 struct synaptics_hw_state *hw)
731 struct synaptics_hw_state *agm = &priv->agm;
734 agm_packet_type = (buf[5] & 0x30) >> 4;
735 switch (agm_packet_type) {
737 /* Gesture packet: (x, y, z) half resolution */
739 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
740 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
741 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
745 /* AGM-CONTACT packet: we are only interested in the count */
746 priv->agm_count = buf[1];
754 static void synaptics_parse_ext_buttons(const u8 buf[],
755 struct synaptics_data *priv,
756 struct synaptics_hw_state *hw)
758 unsigned int ext_bits =
759 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
760 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
762 hw->ext_buttons = buf[4] & ext_mask;
763 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
766 static int synaptics_parse_hw_state(const u8 buf[],
767 struct synaptics_data *priv,
768 struct synaptics_hw_state *hw)
770 memset(hw, 0, sizeof(struct synaptics_hw_state));
772 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
773 hw->w = (((buf[0] & 0x30) >> 2) |
774 ((buf[0] & 0x04) >> 1) |
775 ((buf[3] & 0x04) >> 2));
777 if (synaptics_has_agm(priv) && hw->w == 2) {
778 synaptics_parse_agm(buf, priv, hw);
782 hw->x = (((buf[3] & 0x10) << 8) |
783 ((buf[1] & 0x0f) << 8) |
785 hw->y = (((buf[3] & 0x20) << 7) |
786 ((buf[1] & 0xf0) << 4) |
790 hw->left = (buf[0] & 0x01) ? 1 : 0;
791 hw->right = (buf[0] & 0x02) ? 1 : 0;
793 if (priv->is_forcepad) {
795 * ForcePads, like Clickpads, use middle button
796 * bits to report primary button clicks.
797 * Unfortunately they report primary button not
798 * only when user presses on the pad above certain
799 * threshold, but also when there are more than one
800 * finger on the touchpad, which interferes with
801 * out multi-finger gestures.
805 priv->press = priv->report_press = false;
806 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
808 * Single-finger touch with pressure above
809 * the threshold. If pressure stays long
810 * enough, we'll start reporting primary
811 * button. We rely on the device continuing
812 * sending data even if finger does not
816 priv->press_start = jiffies;
818 } else if (time_after(jiffies,
820 msecs_to_jiffies(50))) {
821 priv->report_press = true;
827 hw->left = priv->report_press;
829 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
831 * Clickpad's button is transmitted as middle button,
832 * however, since it is primary button, we will report
835 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
837 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
838 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
840 hw->scroll = (s8)buf[1];
843 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
844 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
845 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
848 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
849 ((buf[0] ^ buf[3]) & 0x02)) {
850 synaptics_parse_ext_buttons(buf, priv, hw);
853 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
854 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
856 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
857 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
859 hw->left = (buf[0] & 0x01) ? 1 : 0;
860 hw->right = (buf[0] & 0x02) ? 1 : 0;
864 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
865 * is used by some firmware to indicate a finger at the edge of
866 * the touchpad whose precise position cannot be determined, so
867 * convert these values to the maximum axis value.
869 if (hw->x > X_MAX_POSITIVE)
870 hw->x -= 1 << ABS_POS_BITS;
871 else if (hw->x == X_MAX_POSITIVE)
874 if (hw->y > Y_MAX_POSITIVE)
875 hw->y -= 1 << ABS_POS_BITS;
876 else if (hw->y == Y_MAX_POSITIVE)
882 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
883 bool active, int x, int y)
885 input_mt_slot(dev, slot);
886 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
888 input_report_abs(dev, ABS_MT_POSITION_X, x);
889 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
893 static void synaptics_report_semi_mt_data(struct input_dev *dev,
894 const struct synaptics_hw_state *a,
895 const struct synaptics_hw_state *b,
898 if (num_fingers >= 2) {
899 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
901 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
903 } else if (num_fingers == 1) {
904 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
905 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
907 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
908 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
912 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
913 const struct synaptics_hw_state *hw)
915 struct input_dev *dev = psmouse->dev;
916 struct synaptics_data *priv = psmouse->private;
917 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
920 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
923 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
924 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
925 SYN_ID_FULL(priv->info.identity) == 0x802) &&
926 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
929 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
930 for (i = 0; i < ext_bits; i++) {
931 input_report_key(dev, BTN_0 + 2 * i,
932 hw->ext_buttons & BIT(i));
933 input_report_key(dev, BTN_1 + 2 * i,
934 hw->ext_buttons & BIT(i + ext_bits));
940 * This generation of touchpads has the trackstick buttons
941 * physically wired to the touchpad. Re-route them through
942 * the pass-through interface.
947 /* The trackstick expects at most 3 buttons */
948 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
949 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
950 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
952 serio_interrupt(priv->pt_port,
953 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
954 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
958 static void synaptics_report_buttons(struct psmouse *psmouse,
959 const struct synaptics_hw_state *hw)
961 struct input_dev *dev = psmouse->dev;
962 struct synaptics_data *priv = psmouse->private;
964 input_report_key(dev, BTN_LEFT, hw->left);
965 input_report_key(dev, BTN_RIGHT, hw->right);
967 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
968 input_report_key(dev, BTN_MIDDLE, hw->middle);
970 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
971 input_report_key(dev, BTN_FORWARD, hw->up);
972 input_report_key(dev, BTN_BACK, hw->down);
975 synaptics_report_ext_buttons(psmouse, hw);
978 static void synaptics_report_mt_data(struct psmouse *psmouse,
979 const struct synaptics_hw_state *sgm,
982 struct input_dev *dev = psmouse->dev;
983 struct synaptics_data *priv = psmouse->private;
984 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
985 struct input_mt_pos pos[2];
986 int slot[2], nsemi, i;
988 nsemi = clamp_val(num_fingers, 0, 2);
990 for (i = 0; i < nsemi; i++) {
992 pos[i].y = synaptics_invert_y(hw[i]->y);
995 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
997 for (i = 0; i < nsemi; i++) {
998 input_mt_slot(dev, slot[i]);
999 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1000 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1001 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1002 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1005 input_mt_drop_unused(dev);
1007 /* Don't use active slot count to generate BTN_TOOL events. */
1008 input_mt_report_pointer_emulation(dev, false);
1010 /* Send the number of fingers reported by touchpad itself. */
1011 input_mt_report_finger_count(dev, num_fingers);
1013 synaptics_report_buttons(psmouse, sgm);
1018 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1019 struct synaptics_hw_state *sgm)
1021 struct synaptics_data *priv = psmouse->private;
1025 * Update mt_state using the new finger count and current mt_state.
1029 else if (sgm->w >= 4)
1031 else if (sgm->w == 0)
1033 else if (sgm->w == 1)
1034 num_fingers = priv->agm_count ? priv->agm_count : 3;
1038 /* Send resulting input events to user space */
1039 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1042 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1044 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1047 /* Advanced gesture mode also sends multi finger data */
1048 return synaptics_has_agm(priv);
1052 * called for each full received packet from the touchpad
1054 static void synaptics_process_packet(struct psmouse *psmouse)
1056 struct input_dev *dev = psmouse->dev;
1057 struct synaptics_data *priv = psmouse->private;
1058 struct synaptics_device_info *info = &priv->info;
1059 struct synaptics_hw_state hw;
1063 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1066 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1067 synaptics_image_sensor_process(psmouse, &hw);
1072 priv->scroll += hw.scroll;
1074 while (priv->scroll >= 4) {
1075 input_report_key(dev, BTN_BACK, !hw.down);
1077 input_report_key(dev, BTN_BACK, hw.down);
1081 while (priv->scroll <= -4) {
1082 input_report_key(dev, BTN_FORWARD, !hw.up);
1084 input_report_key(dev, BTN_FORWARD, hw.up);
1091 if (hw.z > 0 && hw.x > 1) {
1094 if (SYN_CAP_EXTENDED(info->capabilities)) {
1097 if (synaptics_has_multifinger(priv))
1098 num_fingers = hw.w + 2;
1101 if (SYN_MODEL_PEN(info->model_id))
1102 ; /* Nothing, treat a pen as a single finger */
1105 if (SYN_CAP_PALMDETECT(info->capabilities))
1106 finger_width = hw.w;
1115 if (cr48_profile_sensor) {
1116 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1120 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1121 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1125 * BTN_TOUCH has to be first as mousedev relies on it when doing
1126 * absolute -> relative conversion
1128 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1129 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1131 if (num_fingers > 0) {
1132 input_report_abs(dev, ABS_X, hw.x);
1133 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1135 input_report_abs(dev, ABS_PRESSURE, hw.z);
1137 if (SYN_CAP_PALMDETECT(info->capabilities))
1138 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1140 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1141 if (synaptics_has_multifinger(priv)) {
1142 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1143 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1146 synaptics_report_buttons(psmouse, &hw);
1151 static bool synaptics_validate_byte(struct psmouse *psmouse,
1152 int idx, enum synaptics_pkt_type pkt_type)
1154 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1155 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1156 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1157 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1158 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1159 const u8 *packet = psmouse->packet;
1161 if (idx < 0 || idx > 4)
1167 case SYN_NEWABS_RELAXED:
1168 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1170 case SYN_NEWABS_STRICT:
1171 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1174 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1177 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1182 static enum synaptics_pkt_type
1183 synaptics_detect_pkt_type(struct psmouse *psmouse)
1187 for (i = 0; i < 5; i++) {
1188 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1189 psmouse_info(psmouse, "using relaxed packet validation\n");
1190 return SYN_NEWABS_RELAXED;
1194 return SYN_NEWABS_STRICT;
1197 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1199 struct synaptics_data *priv = psmouse->private;
1201 if (psmouse->pktcnt >= 6) { /* Full packet received */
1202 if (unlikely(priv->pkt_type == SYN_NEWABS))
1203 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1205 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1206 synaptics_is_pt_packet(psmouse->packet)) {
1208 synaptics_pass_pt_packet(priv->pt_port,
1211 synaptics_process_packet(psmouse);
1213 return PSMOUSE_FULL_PACKET;
1216 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1217 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1220 /*****************************************************************************
1221 * Driver initialization/cleanup functions
1222 ****************************************************************************/
1223 static void set_abs_position_params(struct input_dev *dev,
1224 struct synaptics_device_info *info,
1225 int x_code, int y_code)
1227 int x_min = info->x_min ?: XMIN_NOMINAL;
1228 int x_max = info->x_max ?: XMAX_NOMINAL;
1229 int y_min = info->y_min ?: YMIN_NOMINAL;
1230 int y_max = info->y_max ?: YMAX_NOMINAL;
1231 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1232 SYN_REDUCED_FILTER_FUZZ : 0;
1234 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1235 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1236 input_abs_set_res(dev, x_code, info->x_res);
1237 input_abs_set_res(dev, y_code, info->y_res);
1240 static int set_input_params(struct psmouse *psmouse,
1241 struct synaptics_data *priv)
1243 struct input_dev *dev = psmouse->dev;
1244 struct synaptics_device_info *info = &priv->info;
1248 /* Reset default psmouse capabilities */
1249 __clear_bit(EV_REL, dev->evbit);
1250 bitmap_zero(dev->relbit, REL_CNT);
1251 bitmap_zero(dev->keybit, KEY_CNT);
1253 /* Things that apply to both modes */
1254 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1256 input_set_capability(dev, EV_KEY, BTN_LEFT);
1258 /* Clickpads report only left button */
1259 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1260 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1261 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1262 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1265 if (!priv->absolute_mode) {
1267 input_set_capability(dev, EV_REL, REL_X);
1268 input_set_capability(dev, EV_REL, REL_Y);
1273 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1274 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1276 if (cr48_profile_sensor)
1277 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1279 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1280 set_abs_position_params(dev, info,
1281 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1282 /* Image sensors can report per-contact pressure */
1283 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1285 error = input_mt_init_slots(dev, 2,
1286 INPUT_MT_POINTER | INPUT_MT_TRACK);
1290 /* Image sensors can signal 4 and 5 finger clicks */
1291 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1292 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1293 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1294 set_abs_position_params(dev, info,
1295 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1297 * Profile sensor in CR-48 tracks contacts reasonably well,
1298 * other non-image sensors with AGM use semi-mt.
1300 error = input_mt_init_slots(dev, 2,
1302 (cr48_profile_sensor ?
1309 * For semi-mt devices we send ABS_X/Y ourselves instead of
1310 * input_mt_report_pointer_emulation. But
1311 * input_mt_init_slots() resets the fuzz to 0, leading to a
1312 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1313 * position. Let's re-initialize ABS_X/Y here.
1315 if (!cr48_profile_sensor)
1316 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1319 if (SYN_CAP_PALMDETECT(info->capabilities))
1320 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1322 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1323 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1325 if (synaptics_has_multifinger(priv)) {
1326 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1327 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1330 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1331 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1332 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1333 input_set_capability(dev, EV_KEY, BTN_BACK);
1336 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1337 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1338 input_set_capability(dev, EV_KEY, BTN_0 + i);
1340 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1341 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1342 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1343 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1344 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1350 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1351 void *data, char *buf)
1353 struct synaptics_data *priv = psmouse->private;
1355 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1358 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1359 void *data, const char *buf,
1362 struct synaptics_data *priv = psmouse->private;
1366 err = kstrtouint(buf, 10, &value);
1373 if (value == priv->disable_gesture)
1376 priv->disable_gesture = value;
1378 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1380 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1382 if (synaptics_mode_cmd(psmouse, priv->mode))
1388 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1389 synaptics_show_disable_gesture,
1390 synaptics_set_disable_gesture);
1392 static void synaptics_disconnect(struct psmouse *psmouse)
1394 struct synaptics_data *priv = psmouse->private;
1397 * We might have left a breadcrumb when trying to
1398 * set up SMbus companion.
1400 psmouse_smbus_cleanup(psmouse);
1402 if (!priv->absolute_mode &&
1403 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1404 device_remove_file(&psmouse->ps2dev.serio->dev,
1405 &psmouse_attr_disable_gesture.dattr);
1407 synaptics_reset(psmouse);
1409 psmouse->private = NULL;
1412 static int synaptics_reconnect(struct psmouse *psmouse)
1414 struct synaptics_data *priv = psmouse->private;
1415 struct synaptics_device_info info;
1421 psmouse_reset(psmouse);
1424 * On some boxes, right after resuming, the touchpad
1425 * needs some time to finish initializing (I assume
1426 * it needs time to calibrate) and start responding
1427 * to Synaptics-specific queries, so let's wait a
1432 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1433 error = synaptics_detect(psmouse, 0);
1434 } while (error && ++retry < 3);
1440 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1442 error = synaptics_query_hardware(psmouse, &info);
1444 psmouse_err(psmouse, "Unable to query device.\n");
1448 error = synaptics_set_mode(psmouse);
1450 psmouse_err(psmouse, "Unable to initialize device.\n");
1454 if (info.identity != priv->info.identity ||
1455 info.model_id != priv->info.model_id ||
1456 info.capabilities != priv->info.capabilities ||
1457 info.ext_cap != priv->info.ext_cap) {
1458 psmouse_err(psmouse,
1459 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1460 priv->info.identity, info.identity,
1461 priv->info.model_id, info.model_id,
1462 priv->info.capabilities, info.capabilities,
1463 priv->info.ext_cap, info.ext_cap);
1470 static bool impaired_toshiba_kbc;
1472 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1473 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1475 /* Toshiba Satellite */
1477 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1478 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1482 /* Toshiba Dynabook */
1484 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1485 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1489 /* Toshiba Portege M300 */
1491 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1492 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1497 /* Toshiba Portege M300 */
1499 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1500 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1501 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1509 static bool broken_olpc_ec;
1511 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1512 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1514 /* OLPC XO-1 or XO-1.5 */
1516 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1517 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1524 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1525 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1527 /* Cr-48 Chromebook (Codename Mario) */
1529 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1530 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1537 void __init synaptics_module_init(void)
1539 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1540 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1541 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1544 static int synaptics_init_ps2(struct psmouse *psmouse,
1545 struct synaptics_device_info *info,
1548 struct synaptics_data *priv;
1551 synaptics_apply_quirks(psmouse, info);
1553 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1558 priv->absolute_mode = absolute_mode;
1559 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1560 priv->disable_gesture = true;
1563 * Unfortunately ForcePad capability is not exported over PS/2,
1564 * so we have to resort to checking PNP IDs.
1566 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1568 err = synaptics_set_mode(psmouse);
1570 psmouse_err(psmouse, "Unable to initialize device.\n");
1574 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1575 SYN_NEWABS : SYN_OLDABS;
1577 psmouse_info(psmouse,
1578 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1579 SYN_ID_MODEL(info->identity),
1580 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1582 info->capabilities, info->ext_cap, info->ext_cap_0c,
1583 info->ext_cap_10, info->board_id, info->firmware_id);
1585 err = set_input_params(psmouse, priv);
1587 psmouse_err(psmouse,
1588 "failed to set up capabilities: %d\n", err);
1593 * Encode touchpad model so that it can be used to set
1594 * input device->id.version and be visible to userspace.
1595 * Because version is __u16 we have to drop something.
1596 * Hardware info bits seem to be good candidates as they
1597 * are documented to be for Synaptics corp. internal use.
1599 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1600 (info->model_id & 0x000000ff);
1602 if (absolute_mode) {
1603 psmouse->protocol_handler = synaptics_process_byte;
1604 psmouse->pktsize = 6;
1606 /* Relative mode follows standard PS/2 mouse protocol */
1607 psmouse->protocol_handler = psmouse_process_byte;
1608 psmouse->pktsize = 3;
1611 psmouse->set_rate = synaptics_set_rate;
1612 psmouse->disconnect = synaptics_disconnect;
1613 psmouse->reconnect = synaptics_reconnect;
1614 psmouse->cleanup = synaptics_reset;
1615 /* Synaptics can usually stay in sync without extra help */
1616 psmouse->resync_time = 0;
1618 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1619 synaptics_pt_create(psmouse);
1622 * Toshiba's KBC seems to have trouble handling data from
1623 * Synaptics at full rate. Switch to a lower rate (roughly
1624 * the same rate as a standard PS/2 mouse).
1626 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1627 psmouse_info(psmouse,
1628 "Toshiba %s detected, limiting rate to 40pps.\n",
1629 dmi_get_system_info(DMI_PRODUCT_NAME));
1633 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1634 err = device_create_file(&psmouse->ps2dev.serio->dev,
1635 &psmouse_attr_disable_gesture.dattr);
1637 psmouse_err(psmouse,
1638 "Failed to create disable_gesture attribute (%d)",
1651 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1653 struct synaptics_device_info info;
1656 psmouse_reset(psmouse);
1658 error = synaptics_query_hardware(psmouse, &info);
1660 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1664 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1667 int synaptics_init_absolute(struct psmouse *psmouse)
1669 return __synaptics_init(psmouse, true);
1672 int synaptics_init_relative(struct psmouse *psmouse)
1674 return __synaptics_init(psmouse, false);
1677 static int synaptics_setup_ps2(struct psmouse *psmouse,
1678 struct synaptics_device_info *info)
1680 bool absolute_mode = true;
1684 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1685 * packet spew overloads the EC such that key presses on the keyboard
1686 * are missed. Given that, don't even attempt to use Absolute mode.
1687 * Relative mode seems to work just fine.
1689 if (broken_olpc_ec) {
1690 psmouse_info(psmouse,
1691 "OLPC XO detected, forcing relative protocol.\n");
1692 absolute_mode = false;
1695 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1699 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1702 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1704 void __init synaptics_module_init(void)
1708 static int __maybe_unused
1709 synaptics_setup_ps2(struct psmouse *psmouse,
1710 struct synaptics_device_info *info)
1715 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1717 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1720 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1721 * provides a better bandwidth and allow a better control of the touchpads.
1722 * This is used to decide if we need to use this bus or not.
1725 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1726 SYNAPTICS_INTERTOUCH_OFF,
1727 SYNAPTICS_INTERTOUCH_ON,
1730 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1731 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1732 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1733 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1735 static int synaptics_create_intertouch(struct psmouse *psmouse,
1736 struct synaptics_device_info *info,
1737 bool leave_breadcrumbs)
1740 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1741 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1742 const struct rmi_device_platform_data pdata = {
1744 .sensor_type = rmi_sensor_touchpad,
1745 .axis_align.flip_y = true,
1746 .kernel_tracking = false,
1747 .topbuttonpad = topbuttonpad,
1750 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1751 .trackstick_buttons =
1752 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1755 const struct i2c_board_info intertouch_board = {
1756 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1757 .flags = I2C_CLIENT_HOST_NOTIFY,
1760 return psmouse_smbus_init(psmouse, &intertouch_board,
1761 &pdata, sizeof(pdata), true,
1766 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1767 * and decides to instantiate a SMBus InterTouch device.
1769 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1770 struct synaptics_device_info *info,
1771 bool leave_breadcrumbs)
1775 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1778 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1779 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1780 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1782 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1783 psmouse_info(psmouse,
1784 "Your touchpad (%s) says it can support a different bus. "
1785 "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",
1786 psmouse->ps2dev.serio->firmware_id);
1792 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1794 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1796 if (error == -EAGAIN)
1797 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1799 psmouse_err(psmouse, "unable to create intertouch device\n");
1807 int synaptics_init_smbus(struct psmouse *psmouse)
1809 struct synaptics_device_info info;
1812 psmouse_reset(psmouse);
1814 error = synaptics_query_hardware(psmouse, &info);
1816 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1820 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1823 return synaptics_create_intertouch(psmouse, &info, false);
1826 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1828 static int __maybe_unused
1829 synaptics_setup_intertouch(struct psmouse *psmouse,
1830 struct synaptics_device_info *info,
1831 bool leave_breadcrumbs)
1836 int synaptics_init_smbus(struct psmouse *psmouse)
1841 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1843 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1844 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1846 int synaptics_init(struct psmouse *psmouse)
1848 struct synaptics_device_info info;
1852 psmouse_reset(psmouse);
1854 error = synaptics_query_hardware(psmouse, &info);
1856 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1860 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1861 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1862 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1863 /* Forcepads need F21, which is not ready */
1864 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1865 psmouse_warn(psmouse,
1866 "The touchpad can support a better bus than the too old PS/2 protocol. "
1867 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1870 error = synaptics_setup_intertouch(psmouse, &info, true);
1872 return PSMOUSE_SYNAPTICS_SMBUS;
1875 retval = synaptics_setup_ps2(psmouse, &info);
1878 * Not using any flavor of Synaptics support, so clean up
1879 * SMbus breadcrumbs, if any.
1881 psmouse_smbus_cleanup(psmouse);
1887 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1889 int synaptics_init(struct psmouse *psmouse)
1894 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */