2 * Synaptics TouchPad PS/2 mouse driver
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
23 * Trademarks are the property of their respective owners.
26 #include <linux/module.h>
27 #include <linux/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/rmi.h>
33 #include <linux/i2c.h>
34 #include <linux/slab.h>
36 #include "synaptics.h"
39 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
40 * section 2.3.2, which says that they should be valid regardless of the
41 * actual size of the sensor.
42 * Note that newer firmware allows querying device for maximum useable
49 #define XMIN_NOMINAL 1472
50 #define XMAX_NOMINAL 5472
51 #define YMIN_NOMINAL 1408
52 #define YMAX_NOMINAL 4448
54 /* Size in bits of absolute position values reported by the hardware */
55 #define ABS_POS_BITS 13
58 * These values should represent the absolute maximum value that will
59 * be reported for a positive position value. Some Synaptics firmware
60 * uses this value to indicate a finger near the edge of the touchpad
61 * whose precise position cannot be determined.
63 * At least one touchpad is known to report positions in excess of this
64 * value which are actually negative values truncated to the 13-bit
65 * reporting range. These values have never been observed to be lower
66 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
67 * negative and any other value as positive.
69 #define X_MAX_POSITIVE 8176
70 #define Y_MAX_POSITIVE 8176
72 /* maximum ABS_MT_POSITION displacement (in mm) */
75 /*****************************************************************************
76 * Stuff we need even when we do not want native Synaptics support
77 ****************************************************************************/
80 * Set the synaptics touchpad mode byte by special commands
82 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
87 error = ps2_sliced_command(&psmouse->ps2dev, mode);
91 param[0] = SYN_PS_SET_MODE2;
92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
99 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
101 struct ps2dev *ps2dev = &psmouse->ps2dev;
104 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
105 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
108 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
110 if (param[1] != 0x47)
113 if (set_properties) {
114 psmouse->vendor = "Synaptics";
115 psmouse->name = "TouchPad";
121 void synaptics_reset(struct psmouse *psmouse)
123 /* reset touchpad back to relative mode, gestures enabled */
124 synaptics_mode_cmd(psmouse, 0);
127 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
128 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
130 /* This list has been kindly provided by Synaptics. */
131 static const char * const topbuttonpad_pnp_ids[] = {
141 "LEN0033", /* Helix */
142 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
143 "LEN0035", /* X240 */
144 "LEN0036", /* T440 */
145 "LEN0037", /* X1 Carbon 2nd */
147 "LEN0039", /* T440s */
149 "LEN0042", /* Yoga */
153 "LEN2000", /* S540 */
154 "LEN2001", /* Edge E431 */
155 "LEN2002", /* Edge E531 */
157 "LEN2004", /* L440 */
159 "LEN2006", /* Edge E440/E540 */
168 static const char * const smbus_pnp_ids[] = {
169 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
170 "LEN0048", /* X1 Carbon 3 */
171 "LEN0046", /* X250 */
172 "LEN004a", /* W541 */
173 "LEN0071", /* T480 */
174 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
175 "LEN0073", /* X1 Carbon G5 (Elantech) */
176 "LEN0092", /* X1 Carbon 6 */
177 "LEN0096", /* X280 */
178 "LEN0097", /* X280 -> ALPS trackpoint */
179 "LEN200f", /* T450s */
183 static const char * const forcepad_pnp_ids[] = {
190 * Send a command to the synpatics touchpad by special commands
192 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
196 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
200 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
207 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
215 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
219 *val = be32_to_cpu(resp.be_val);
225 * See also the SYN_ID_* macros
227 static int synaptics_identify(struct psmouse *psmouse,
228 struct synaptics_device_info *info)
232 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
236 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
240 * Read the model-id bytes from the touchpad
241 * see also SYN_MODEL_* macros
243 static int synaptics_model_id(struct psmouse *psmouse,
244 struct synaptics_device_info *info)
246 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
250 * Read the firmware id from the touchpad
252 static int synaptics_firmware_id(struct psmouse *psmouse,
253 struct synaptics_device_info *info)
255 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
260 * Read the board id and the "More Extended Queries" from the touchpad
261 * The board id is encoded in the "QUERY MODES" response
263 static int synaptics_query_modes(struct psmouse *psmouse,
264 struct synaptics_device_info *info)
269 /* firmwares prior 7.5 have no board_id encoded */
270 if (SYN_ID_FULL(info->identity) < 0x705)
273 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
277 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
279 if (SYN_MEXT_CAP_BIT(bid[0]))
280 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
287 * Read the capability-bits from the touchpad
288 * see also the SYN_CAP_* macros
290 static int synaptics_capability(struct psmouse *psmouse,
291 struct synaptics_device_info *info)
295 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
296 &info->capabilities);
300 info->ext_cap = info->ext_cap_0c = 0;
303 * Older firmwares had submodel ID fixed to 0x47
305 if (SYN_ID_FULL(info->identity) < 0x705 &&
306 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
311 * Unless capExtended is set the rest of the flags should be ignored
313 if (!SYN_CAP_EXTENDED(info->capabilities))
314 info->capabilities = 0;
316 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
317 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
320 psmouse_warn(psmouse,
321 "device claims to have extended capabilities, but I'm not able to read them.\n");
324 * if nExtBtn is greater than 8 it should be considered
325 * invalid and treated as 0
327 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
328 info->ext_cap &= ~SYN_CAP_MB_MASK;
332 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
333 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
336 psmouse_warn(psmouse,
337 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
344 * Read touchpad resolution and maximum reported coordinates
345 * Resolution is left zero if touchpad does not support the query
347 static int synaptics_resolution(struct psmouse *psmouse,
348 struct synaptics_device_info *info)
353 if (SYN_ID_MAJOR(info->identity) < 4)
356 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
358 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
359 info->x_res = resp[0]; /* x resolution in units/mm */
360 info->y_res = resp[2]; /* y resolution in units/mm */
364 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
365 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
366 error = synaptics_send_cmd(psmouse,
367 SYN_QUE_EXT_MAX_COORDS, resp);
369 psmouse_warn(psmouse,
370 "device claims to have max coordinates query, but I'm not able to read it.\n");
372 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
373 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
374 psmouse_info(psmouse,
375 "queried max coordinates: x [..%d], y [..%d]\n",
376 info->x_max, info->y_max);
380 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
381 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
383 * Firmware v8.1 does not report proper number of extended
384 * capabilities, but has been proven to report correct min
387 SYN_ID_FULL(info->identity) == 0x801)) {
388 error = synaptics_send_cmd(psmouse,
389 SYN_QUE_EXT_MIN_COORDS, resp);
391 psmouse_warn(psmouse,
392 "device claims to have min coordinates query, but I'm not able to read it.\n");
394 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
395 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
396 psmouse_info(psmouse,
397 "queried min coordinates: x [%d..], y [%d..]\n",
398 info->x_min, info->y_min);
405 static int synaptics_query_hardware(struct psmouse *psmouse,
406 struct synaptics_device_info *info)
410 memset(info, 0, sizeof(*info));
412 error = synaptics_identify(psmouse, info);
416 error = synaptics_model_id(psmouse, info);
420 error = synaptics_firmware_id(psmouse, info);
424 error = synaptics_query_modes(psmouse, info);
428 error = synaptics_capability(psmouse, info);
432 error = synaptics_resolution(psmouse, info);
439 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
441 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
443 static bool cr48_profile_sensor;
445 #define ANY_BOARD_ID 0
446 struct min_max_quirk {
447 const char * const *pnp_ids;
451 u32 x_min, x_max, y_min, y_max;
454 static const struct min_max_quirk min_max_pnpid_table[] = {
456 (const char * const []){"LEN0033", NULL},
457 {ANY_BOARD_ID, ANY_BOARD_ID},
458 1024, 5052, 2258, 4832
461 (const char * const []){"LEN0042", NULL},
462 {ANY_BOARD_ID, ANY_BOARD_ID},
463 1232, 5710, 1156, 4696
466 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
467 "LEN0039", "LEN2002", "LEN2004",
469 {ANY_BOARD_ID, 2961},
470 1024, 5112, 2024, 4832
473 (const char * const []){"LEN2000", NULL},
474 {ANY_BOARD_ID, ANY_BOARD_ID},
475 1024, 5113, 2021, 4832
478 (const char * const []){"LEN2001", NULL},
479 {ANY_BOARD_ID, ANY_BOARD_ID},
480 1024, 5022, 2508, 4832
483 (const char * const []){"LEN2006", NULL},
485 1024, 5045, 2457, 4832
488 (const char * const []){"LEN2006", NULL},
489 {ANY_BOARD_ID, ANY_BOARD_ID},
490 1264, 5675, 1171, 4688
495 /*****************************************************************************
496 * Synaptics communications functions
497 ****************************************************************************/
500 * Synaptics touchpads report the y coordinate from bottom to top, which is
501 * opposite from what userspace expects.
502 * This function is used to invert y before reporting.
504 static int synaptics_invert_y(int y)
506 return YMAX_NOMINAL + YMIN_NOMINAL - y;
510 * Apply quirk(s) if the hardware matches
512 static void synaptics_apply_quirks(struct psmouse *psmouse,
513 struct synaptics_device_info *info)
517 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
518 if (!psmouse_matches_pnp_id(psmouse,
519 min_max_pnpid_table[i].pnp_ids))
522 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
523 info->board_id < min_max_pnpid_table[i].board_id.min)
526 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
527 info->board_id > min_max_pnpid_table[i].board_id.max)
530 info->x_min = min_max_pnpid_table[i].x_min;
531 info->x_max = min_max_pnpid_table[i].x_max;
532 info->y_min = min_max_pnpid_table[i].y_min;
533 info->y_max = min_max_pnpid_table[i].y_max;
534 psmouse_info(psmouse,
535 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
536 info->x_min, info->x_max,
537 info->y_min, info->y_max);
542 static bool synaptics_has_agm(struct synaptics_data *priv)
544 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
545 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
548 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
550 static u8 param = 0xc8;
553 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
557 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
564 static int synaptics_set_mode(struct psmouse *psmouse)
566 struct synaptics_data *priv = psmouse->private;
570 if (priv->absolute_mode)
571 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
572 if (priv->disable_gesture)
573 priv->mode |= SYN_BIT_DISABLE_GESTURE;
574 if (psmouse->rate >= 80)
575 priv->mode |= SYN_BIT_HIGH_RATE;
576 if (SYN_CAP_EXTENDED(priv->info.capabilities))
577 priv->mode |= SYN_BIT_W_MODE;
579 error = synaptics_mode_cmd(psmouse, priv->mode);
583 if (priv->absolute_mode && synaptics_has_agm(priv)) {
584 error = synaptics_set_advanced_gesture_mode(psmouse);
587 "Advanced gesture mode init failed: %d\n",
596 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
598 struct synaptics_data *priv = psmouse->private;
601 priv->mode |= SYN_BIT_HIGH_RATE;
604 priv->mode &= ~SYN_BIT_HIGH_RATE;
608 synaptics_mode_cmd(psmouse, priv->mode);
611 /*****************************************************************************
612 * Synaptics pass-through PS/2 port support
613 ****************************************************************************/
614 static int synaptics_pt_write(struct serio *serio, u8 c)
616 struct psmouse *parent = serio_get_drvdata(serio->parent);
617 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
620 error = ps2_sliced_command(&parent->ps2dev, c);
624 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
631 static int synaptics_pt_start(struct serio *serio)
633 struct psmouse *parent = serio_get_drvdata(serio->parent);
634 struct synaptics_data *priv = parent->private;
636 serio_pause_rx(parent->ps2dev.serio);
637 priv->pt_port = serio;
638 serio_continue_rx(parent->ps2dev.serio);
643 static void synaptics_pt_stop(struct serio *serio)
645 struct psmouse *parent = serio_get_drvdata(serio->parent);
646 struct synaptics_data *priv = parent->private;
648 serio_pause_rx(parent->ps2dev.serio);
649 priv->pt_port = NULL;
650 serio_continue_rx(parent->ps2dev.serio);
653 static int synaptics_is_pt_packet(u8 *buf)
655 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
658 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
660 struct psmouse *child = serio_get_drvdata(ptport);
662 if (child && child->state == PSMOUSE_ACTIVATED) {
663 serio_interrupt(ptport, packet[1], 0);
664 serio_interrupt(ptport, packet[4], 0);
665 serio_interrupt(ptport, packet[5], 0);
666 if (child->pktsize == 4)
667 serio_interrupt(ptport, packet[2], 0);
669 serio_interrupt(ptport, packet[1], 0);
673 static void synaptics_pt_activate(struct psmouse *psmouse)
675 struct synaptics_data *priv = psmouse->private;
676 struct psmouse *child = serio_get_drvdata(priv->pt_port);
678 /* adjust the touchpad to child's choice of protocol */
680 if (child->pktsize == 4)
681 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
683 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
685 if (synaptics_mode_cmd(psmouse, priv->mode))
686 psmouse_warn(psmouse,
687 "failed to switch guest protocol\n");
691 static void synaptics_pt_create(struct psmouse *psmouse)
695 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
698 "not enough memory for pass-through port\n");
702 serio->id.type = SERIO_PS_PSTHRU;
703 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
704 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
705 serio->write = synaptics_pt_write;
706 serio->start = synaptics_pt_start;
707 serio->stop = synaptics_pt_stop;
708 serio->parent = psmouse->ps2dev.serio;
710 psmouse->pt_activate = synaptics_pt_activate;
712 psmouse_info(psmouse, "serio: %s port at %s\n",
713 serio->name, psmouse->phys);
714 serio_register_port(serio);
717 /*****************************************************************************
718 * Functions to interpret the absolute mode packets
719 ****************************************************************************/
721 static void synaptics_parse_agm(const u8 buf[],
722 struct synaptics_data *priv,
723 struct synaptics_hw_state *hw)
725 struct synaptics_hw_state *agm = &priv->agm;
728 agm_packet_type = (buf[5] & 0x30) >> 4;
729 switch (agm_packet_type) {
731 /* Gesture packet: (x, y, z) half resolution */
733 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
734 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
735 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
739 /* AGM-CONTACT packet: we are only interested in the count */
740 priv->agm_count = buf[1];
748 static void synaptics_parse_ext_buttons(const u8 buf[],
749 struct synaptics_data *priv,
750 struct synaptics_hw_state *hw)
752 unsigned int ext_bits =
753 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
754 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
756 hw->ext_buttons = buf[4] & ext_mask;
757 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
760 static int synaptics_parse_hw_state(const u8 buf[],
761 struct synaptics_data *priv,
762 struct synaptics_hw_state *hw)
764 memset(hw, 0, sizeof(struct synaptics_hw_state));
766 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
767 hw->w = (((buf[0] & 0x30) >> 2) |
768 ((buf[0] & 0x04) >> 1) |
769 ((buf[3] & 0x04) >> 2));
771 if (synaptics_has_agm(priv) && hw->w == 2) {
772 synaptics_parse_agm(buf, priv, hw);
776 hw->x = (((buf[3] & 0x10) << 8) |
777 ((buf[1] & 0x0f) << 8) |
779 hw->y = (((buf[3] & 0x20) << 7) |
780 ((buf[1] & 0xf0) << 4) |
784 hw->left = (buf[0] & 0x01) ? 1 : 0;
785 hw->right = (buf[0] & 0x02) ? 1 : 0;
787 if (priv->is_forcepad) {
789 * ForcePads, like Clickpads, use middle button
790 * bits to report primary button clicks.
791 * Unfortunately they report primary button not
792 * only when user presses on the pad above certain
793 * threshold, but also when there are more than one
794 * finger on the touchpad, which interferes with
795 * out multi-finger gestures.
799 priv->press = priv->report_press = false;
800 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
802 * Single-finger touch with pressure above
803 * the threshold. If pressure stays long
804 * enough, we'll start reporting primary
805 * button. We rely on the device continuing
806 * sending data even if finger does not
810 priv->press_start = jiffies;
812 } else if (time_after(jiffies,
814 msecs_to_jiffies(50))) {
815 priv->report_press = true;
821 hw->left = priv->report_press;
823 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
825 * Clickpad's button is transmitted as middle button,
826 * however, since it is primary button, we will report
829 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
831 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
832 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
834 hw->scroll = (s8)buf[1];
837 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
838 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
839 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
842 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
843 ((buf[0] ^ buf[3]) & 0x02)) {
844 synaptics_parse_ext_buttons(buf, priv, hw);
847 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
848 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
850 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
851 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
853 hw->left = (buf[0] & 0x01) ? 1 : 0;
854 hw->right = (buf[0] & 0x02) ? 1 : 0;
858 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
859 * is used by some firmware to indicate a finger at the edge of
860 * the touchpad whose precise position cannot be determined, so
861 * convert these values to the maximum axis value.
863 if (hw->x > X_MAX_POSITIVE)
864 hw->x -= 1 << ABS_POS_BITS;
865 else if (hw->x == X_MAX_POSITIVE)
868 if (hw->y > Y_MAX_POSITIVE)
869 hw->y -= 1 << ABS_POS_BITS;
870 else if (hw->y == Y_MAX_POSITIVE)
876 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
877 bool active, int x, int y)
879 input_mt_slot(dev, slot);
880 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
882 input_report_abs(dev, ABS_MT_POSITION_X, x);
883 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
887 static void synaptics_report_semi_mt_data(struct input_dev *dev,
888 const struct synaptics_hw_state *a,
889 const struct synaptics_hw_state *b,
892 if (num_fingers >= 2) {
893 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
895 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
897 } else if (num_fingers == 1) {
898 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
899 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
901 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
902 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
906 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
907 const struct synaptics_hw_state *hw)
909 struct input_dev *dev = psmouse->dev;
910 struct synaptics_data *priv = psmouse->private;
911 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
914 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
917 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
918 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
919 SYN_ID_FULL(priv->info.identity) == 0x802) &&
920 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
923 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
924 for (i = 0; i < ext_bits; i++) {
925 input_report_key(dev, BTN_0 + 2 * i,
926 hw->ext_buttons & BIT(i));
927 input_report_key(dev, BTN_1 + 2 * i,
928 hw->ext_buttons & BIT(i + ext_bits));
934 * This generation of touchpads has the trackstick buttons
935 * physically wired to the touchpad. Re-route them through
936 * the pass-through interface.
941 /* The trackstick expects at most 3 buttons */
942 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
943 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
944 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
946 serio_interrupt(priv->pt_port,
947 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
948 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
952 static void synaptics_report_buttons(struct psmouse *psmouse,
953 const struct synaptics_hw_state *hw)
955 struct input_dev *dev = psmouse->dev;
956 struct synaptics_data *priv = psmouse->private;
958 input_report_key(dev, BTN_LEFT, hw->left);
959 input_report_key(dev, BTN_RIGHT, hw->right);
961 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
962 input_report_key(dev, BTN_MIDDLE, hw->middle);
964 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
965 input_report_key(dev, BTN_FORWARD, hw->up);
966 input_report_key(dev, BTN_BACK, hw->down);
969 synaptics_report_ext_buttons(psmouse, hw);
972 static void synaptics_report_mt_data(struct psmouse *psmouse,
973 const struct synaptics_hw_state *sgm,
976 struct input_dev *dev = psmouse->dev;
977 struct synaptics_data *priv = psmouse->private;
978 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
979 struct input_mt_pos pos[2];
980 int slot[2], nsemi, i;
982 nsemi = clamp_val(num_fingers, 0, 2);
984 for (i = 0; i < nsemi; i++) {
986 pos[i].y = synaptics_invert_y(hw[i]->y);
989 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
991 for (i = 0; i < nsemi; i++) {
992 input_mt_slot(dev, slot[i]);
993 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
994 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
995 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
996 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
999 input_mt_drop_unused(dev);
1001 /* Don't use active slot count to generate BTN_TOOL events. */
1002 input_mt_report_pointer_emulation(dev, false);
1004 /* Send the number of fingers reported by touchpad itself. */
1005 input_mt_report_finger_count(dev, num_fingers);
1007 synaptics_report_buttons(psmouse, sgm);
1012 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1013 struct synaptics_hw_state *sgm)
1015 struct synaptics_data *priv = psmouse->private;
1019 * Update mt_state using the new finger count and current mt_state.
1023 else if (sgm->w >= 4)
1025 else if (sgm->w == 0)
1027 else if (sgm->w == 1)
1028 num_fingers = priv->agm_count ? priv->agm_count : 3;
1032 /* Send resulting input events to user space */
1033 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1036 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1038 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1041 /* Advanced gesture mode also sends multi finger data */
1042 return synaptics_has_agm(priv);
1046 * called for each full received packet from the touchpad
1048 static void synaptics_process_packet(struct psmouse *psmouse)
1050 struct input_dev *dev = psmouse->dev;
1051 struct synaptics_data *priv = psmouse->private;
1052 struct synaptics_device_info *info = &priv->info;
1053 struct synaptics_hw_state hw;
1057 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1060 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1061 synaptics_image_sensor_process(psmouse, &hw);
1066 priv->scroll += hw.scroll;
1068 while (priv->scroll >= 4) {
1069 input_report_key(dev, BTN_BACK, !hw.down);
1071 input_report_key(dev, BTN_BACK, hw.down);
1075 while (priv->scroll <= -4) {
1076 input_report_key(dev, BTN_FORWARD, !hw.up);
1078 input_report_key(dev, BTN_FORWARD, hw.up);
1085 if (hw.z > 0 && hw.x > 1) {
1088 if (SYN_CAP_EXTENDED(info->capabilities)) {
1091 if (synaptics_has_multifinger(priv))
1092 num_fingers = hw.w + 2;
1095 if (SYN_MODEL_PEN(info->model_id))
1096 ; /* Nothing, treat a pen as a single finger */
1099 if (SYN_CAP_PALMDETECT(info->capabilities))
1100 finger_width = hw.w;
1109 if (cr48_profile_sensor) {
1110 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1114 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1115 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1119 * BTN_TOUCH has to be first as mousedev relies on it when doing
1120 * absolute -> relative conversion
1122 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1123 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1125 if (num_fingers > 0) {
1126 input_report_abs(dev, ABS_X, hw.x);
1127 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1129 input_report_abs(dev, ABS_PRESSURE, hw.z);
1131 if (SYN_CAP_PALMDETECT(info->capabilities))
1132 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1134 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1135 if (synaptics_has_multifinger(priv)) {
1136 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1137 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1140 synaptics_report_buttons(psmouse, &hw);
1145 static bool synaptics_validate_byte(struct psmouse *psmouse,
1146 int idx, enum synaptics_pkt_type pkt_type)
1148 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1149 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1150 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1151 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1152 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1153 const u8 *packet = psmouse->packet;
1155 if (idx < 0 || idx > 4)
1161 case SYN_NEWABS_RELAXED:
1162 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1164 case SYN_NEWABS_STRICT:
1165 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1168 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1171 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1176 static enum synaptics_pkt_type
1177 synaptics_detect_pkt_type(struct psmouse *psmouse)
1181 for (i = 0; i < 5; i++) {
1182 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1183 psmouse_info(psmouse, "using relaxed packet validation\n");
1184 return SYN_NEWABS_RELAXED;
1188 return SYN_NEWABS_STRICT;
1191 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1193 struct synaptics_data *priv = psmouse->private;
1195 if (psmouse->pktcnt >= 6) { /* Full packet received */
1196 if (unlikely(priv->pkt_type == SYN_NEWABS))
1197 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1199 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1200 synaptics_is_pt_packet(psmouse->packet)) {
1202 synaptics_pass_pt_packet(priv->pt_port,
1205 synaptics_process_packet(psmouse);
1207 return PSMOUSE_FULL_PACKET;
1210 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1211 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1214 /*****************************************************************************
1215 * Driver initialization/cleanup functions
1216 ****************************************************************************/
1217 static void set_abs_position_params(struct input_dev *dev,
1218 struct synaptics_device_info *info,
1219 int x_code, int y_code)
1221 int x_min = info->x_min ?: XMIN_NOMINAL;
1222 int x_max = info->x_max ?: XMAX_NOMINAL;
1223 int y_min = info->y_min ?: YMIN_NOMINAL;
1224 int y_max = info->y_max ?: YMAX_NOMINAL;
1225 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1226 SYN_REDUCED_FILTER_FUZZ : 0;
1228 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1229 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1230 input_abs_set_res(dev, x_code, info->x_res);
1231 input_abs_set_res(dev, y_code, info->y_res);
1234 static int set_input_params(struct psmouse *psmouse,
1235 struct synaptics_data *priv)
1237 struct input_dev *dev = psmouse->dev;
1238 struct synaptics_device_info *info = &priv->info;
1242 /* Reset default psmouse capabilities */
1243 __clear_bit(EV_REL, dev->evbit);
1244 bitmap_zero(dev->relbit, REL_CNT);
1245 bitmap_zero(dev->keybit, KEY_CNT);
1247 /* Things that apply to both modes */
1248 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1250 input_set_capability(dev, EV_KEY, BTN_LEFT);
1252 /* Clickpads report only left button */
1253 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1254 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1255 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1256 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1259 if (!priv->absolute_mode) {
1261 input_set_capability(dev, EV_REL, REL_X);
1262 input_set_capability(dev, EV_REL, REL_Y);
1267 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1268 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1270 if (cr48_profile_sensor)
1271 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1273 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1274 set_abs_position_params(dev, info,
1275 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1276 /* Image sensors can report per-contact pressure */
1277 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1279 error = input_mt_init_slots(dev, 2,
1280 INPUT_MT_POINTER | INPUT_MT_TRACK);
1284 /* Image sensors can signal 4 and 5 finger clicks */
1285 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1286 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1287 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1288 set_abs_position_params(dev, info,
1289 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1291 * Profile sensor in CR-48 tracks contacts reasonably well,
1292 * other non-image sensors with AGM use semi-mt.
1294 error = input_mt_init_slots(dev, 2,
1296 (cr48_profile_sensor ?
1303 * For semi-mt devices we send ABS_X/Y ourselves instead of
1304 * input_mt_report_pointer_emulation. But
1305 * input_mt_init_slots() resets the fuzz to 0, leading to a
1306 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1307 * position. Let's re-initialize ABS_X/Y here.
1309 if (!cr48_profile_sensor)
1310 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1313 if (SYN_CAP_PALMDETECT(info->capabilities))
1314 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1316 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1317 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1319 if (synaptics_has_multifinger(priv)) {
1320 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1321 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1324 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1325 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1326 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1327 input_set_capability(dev, EV_KEY, BTN_BACK);
1330 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1331 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1332 input_set_capability(dev, EV_KEY, BTN_0 + i);
1334 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1335 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1336 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1337 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1338 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1344 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1345 void *data, char *buf)
1347 struct synaptics_data *priv = psmouse->private;
1349 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1352 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1353 void *data, const char *buf,
1356 struct synaptics_data *priv = psmouse->private;
1360 err = kstrtouint(buf, 10, &value);
1367 if (value == priv->disable_gesture)
1370 priv->disable_gesture = value;
1372 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1374 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1376 if (synaptics_mode_cmd(psmouse, priv->mode))
1382 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1383 synaptics_show_disable_gesture,
1384 synaptics_set_disable_gesture);
1386 static void synaptics_disconnect(struct psmouse *psmouse)
1388 struct synaptics_data *priv = psmouse->private;
1391 * We might have left a breadcrumb when trying to
1392 * set up SMbus companion.
1394 psmouse_smbus_cleanup(psmouse);
1396 if (!priv->absolute_mode &&
1397 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1398 device_remove_file(&psmouse->ps2dev.serio->dev,
1399 &psmouse_attr_disable_gesture.dattr);
1401 synaptics_reset(psmouse);
1403 psmouse->private = NULL;
1406 static int synaptics_reconnect(struct psmouse *psmouse)
1408 struct synaptics_data *priv = psmouse->private;
1409 struct synaptics_device_info info;
1415 psmouse_reset(psmouse);
1418 * On some boxes, right after resuming, the touchpad
1419 * needs some time to finish initializing (I assume
1420 * it needs time to calibrate) and start responding
1421 * to Synaptics-specific queries, so let's wait a
1426 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1427 error = synaptics_detect(psmouse, 0);
1428 } while (error && ++retry < 3);
1434 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1436 error = synaptics_query_hardware(psmouse, &info);
1438 psmouse_err(psmouse, "Unable to query device.\n");
1442 error = synaptics_set_mode(psmouse);
1444 psmouse_err(psmouse, "Unable to initialize device.\n");
1448 if (info.identity != priv->info.identity ||
1449 info.model_id != priv->info.model_id ||
1450 info.capabilities != priv->info.capabilities ||
1451 info.ext_cap != priv->info.ext_cap) {
1452 psmouse_err(psmouse,
1453 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1454 priv->info.identity, info.identity,
1455 priv->info.model_id, info.model_id,
1456 priv->info.capabilities, info.capabilities,
1457 priv->info.ext_cap, info.ext_cap);
1464 static bool impaired_toshiba_kbc;
1466 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1467 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1469 /* Toshiba Satellite */
1471 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1472 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1476 /* Toshiba Dynabook */
1478 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1479 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1483 /* Toshiba Portege M300 */
1485 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1486 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1491 /* Toshiba Portege M300 */
1493 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1494 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1495 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1503 static bool broken_olpc_ec;
1505 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1506 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1508 /* OLPC XO-1 or XO-1.5 */
1510 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1511 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1518 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1519 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1521 /* Cr-48 Chromebook (Codename Mario) */
1523 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1524 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1531 void __init synaptics_module_init(void)
1533 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1534 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1535 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1538 static int synaptics_init_ps2(struct psmouse *psmouse,
1539 struct synaptics_device_info *info,
1542 struct synaptics_data *priv;
1545 synaptics_apply_quirks(psmouse, info);
1547 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1552 priv->absolute_mode = absolute_mode;
1553 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1554 priv->disable_gesture = true;
1557 * Unfortunately ForcePad capability is not exported over PS/2,
1558 * so we have to resort to checking PNP IDs.
1560 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1562 err = synaptics_set_mode(psmouse);
1564 psmouse_err(psmouse, "Unable to initialize device.\n");
1568 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1569 SYN_NEWABS : SYN_OLDABS;
1571 psmouse_info(psmouse,
1572 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1573 SYN_ID_MODEL(info->identity),
1574 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1576 info->capabilities, info->ext_cap, info->ext_cap_0c,
1577 info->ext_cap_10, info->board_id, info->firmware_id);
1579 err = set_input_params(psmouse, priv);
1581 psmouse_err(psmouse,
1582 "failed to set up capabilities: %d\n", err);
1587 * Encode touchpad model so that it can be used to set
1588 * input device->id.version and be visible to userspace.
1589 * Because version is __u16 we have to drop something.
1590 * Hardware info bits seem to be good candidates as they
1591 * are documented to be for Synaptics corp. internal use.
1593 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1594 (info->model_id & 0x000000ff);
1596 if (absolute_mode) {
1597 psmouse->protocol_handler = synaptics_process_byte;
1598 psmouse->pktsize = 6;
1600 /* Relative mode follows standard PS/2 mouse protocol */
1601 psmouse->protocol_handler = psmouse_process_byte;
1602 psmouse->pktsize = 3;
1605 psmouse->set_rate = synaptics_set_rate;
1606 psmouse->disconnect = synaptics_disconnect;
1607 psmouse->reconnect = synaptics_reconnect;
1608 psmouse->cleanup = synaptics_reset;
1609 /* Synaptics can usually stay in sync without extra help */
1610 psmouse->resync_time = 0;
1612 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1613 synaptics_pt_create(psmouse);
1616 * Toshiba's KBC seems to have trouble handling data from
1617 * Synaptics at full rate. Switch to a lower rate (roughly
1618 * the same rate as a standard PS/2 mouse).
1620 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1621 psmouse_info(psmouse,
1622 "Toshiba %s detected, limiting rate to 40pps.\n",
1623 dmi_get_system_info(DMI_PRODUCT_NAME));
1627 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1628 err = device_create_file(&psmouse->ps2dev.serio->dev,
1629 &psmouse_attr_disable_gesture.dattr);
1631 psmouse_err(psmouse,
1632 "Failed to create disable_gesture attribute (%d)",
1645 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1647 struct synaptics_device_info info;
1650 psmouse_reset(psmouse);
1652 error = synaptics_query_hardware(psmouse, &info);
1654 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1658 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1661 int synaptics_init_absolute(struct psmouse *psmouse)
1663 return __synaptics_init(psmouse, true);
1666 int synaptics_init_relative(struct psmouse *psmouse)
1668 return __synaptics_init(psmouse, false);
1671 static int synaptics_setup_ps2(struct psmouse *psmouse,
1672 struct synaptics_device_info *info)
1674 bool absolute_mode = true;
1678 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1679 * packet spew overloads the EC such that key presses on the keyboard
1680 * are missed. Given that, don't even attempt to use Absolute mode.
1681 * Relative mode seems to work just fine.
1683 if (broken_olpc_ec) {
1684 psmouse_info(psmouse,
1685 "OLPC XO detected, forcing relative protocol.\n");
1686 absolute_mode = false;
1689 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1693 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1696 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1698 void __init synaptics_module_init(void)
1702 static int __maybe_unused
1703 synaptics_setup_ps2(struct psmouse *psmouse,
1704 struct synaptics_device_info *info)
1709 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1711 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1714 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1715 * provides a better bandwidth and allow a better control of the touchpads.
1716 * This is used to decide if we need to use this bus or not.
1719 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1720 SYNAPTICS_INTERTOUCH_OFF,
1721 SYNAPTICS_INTERTOUCH_ON,
1724 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1725 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1726 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1727 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1729 static int synaptics_create_intertouch(struct psmouse *psmouse,
1730 struct synaptics_device_info *info,
1731 bool leave_breadcrumbs)
1734 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1735 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1736 const struct rmi_device_platform_data pdata = {
1738 .sensor_type = rmi_sensor_touchpad,
1739 .axis_align.flip_y = true,
1740 .kernel_tracking = false,
1741 .topbuttonpad = topbuttonpad,
1744 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1745 .trackstick_buttons =
1746 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1749 const struct i2c_board_info intertouch_board = {
1750 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1751 .flags = I2C_CLIENT_HOST_NOTIFY,
1754 return psmouse_smbus_init(psmouse, &intertouch_board,
1755 &pdata, sizeof(pdata), true,
1760 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1761 * and decides to instantiate a SMBus InterTouch device.
1763 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1764 struct synaptics_device_info *info,
1765 bool leave_breadcrumbs)
1769 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1772 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1773 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1774 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1776 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1777 psmouse_info(psmouse,
1778 "Your touchpad (%s) says it can support a different bus. "
1779 "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",
1780 psmouse->ps2dev.serio->firmware_id);
1786 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1788 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1790 if (error == -EAGAIN)
1791 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1793 psmouse_err(psmouse, "unable to create intertouch device\n");
1801 int synaptics_init_smbus(struct psmouse *psmouse)
1803 struct synaptics_device_info info;
1806 psmouse_reset(psmouse);
1808 error = synaptics_query_hardware(psmouse, &info);
1810 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1814 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1817 return synaptics_create_intertouch(psmouse, &info, false);
1820 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1822 static int __maybe_unused
1823 synaptics_setup_intertouch(struct psmouse *psmouse,
1824 struct synaptics_device_info *info,
1825 bool leave_breadcrumbs)
1830 int synaptics_init_smbus(struct psmouse *psmouse)
1835 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1837 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1838 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1840 int synaptics_init(struct psmouse *psmouse)
1842 struct synaptics_device_info info;
1846 psmouse_reset(psmouse);
1848 error = synaptics_query_hardware(psmouse, &info);
1850 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1854 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1855 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1856 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1857 /* Forcepads need F21, which is not ready */
1858 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1859 psmouse_warn(psmouse,
1860 "The touchpad can support a better bus than the too old PS/2 protocol. "
1861 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1864 error = synaptics_setup_intertouch(psmouse, &info, true);
1866 return PSMOUSE_SYNAPTICS_SMBUS;
1869 retval = synaptics_setup_ps2(psmouse, &info);
1872 * Not using any flavor of Synaptics support, so clean up
1873 * SMbus breadcrumbs, if any.
1875 psmouse_smbus_cleanup(psmouse);
1881 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1883 int synaptics_init(struct psmouse *psmouse)
1888 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */