2 * Synaptics TouchPad PS/2 mouse driver
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
23 * Trademarks are the property of their respective owners.
26 #include <linux/module.h>
27 #include <linux/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/rmi.h>
33 #include <linux/i2c.h>
34 #include <linux/slab.h>
36 #include "synaptics.h"
39 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
40 * section 2.3.2, which says that they should be valid regardless of the
41 * actual size of the sensor.
42 * Note that newer firmware allows querying device for maximum useable
49 #define XMIN_NOMINAL 1472
50 #define XMAX_NOMINAL 5472
51 #define YMIN_NOMINAL 1408
52 #define YMAX_NOMINAL 4448
54 /* Size in bits of absolute position values reported by the hardware */
55 #define ABS_POS_BITS 13
58 * These values should represent the absolute maximum value that will
59 * be reported for a positive position value. Some Synaptics firmware
60 * uses this value to indicate a finger near the edge of the touchpad
61 * whose precise position cannot be determined.
63 * At least one touchpad is known to report positions in excess of this
64 * value which are actually negative values truncated to the 13-bit
65 * reporting range. These values have never been observed to be lower
66 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
67 * negative and any other value as positive.
69 #define X_MAX_POSITIVE 8176
70 #define Y_MAX_POSITIVE 8176
72 /* maximum ABS_MT_POSITION displacement (in mm) */
75 /*****************************************************************************
76 * Stuff we need even when we do not want native Synaptics support
77 ****************************************************************************/
80 * Set the synaptics touchpad mode byte by special commands
82 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
87 error = psmouse_sliced_command(psmouse, mode);
91 param[0] = SYN_PS_SET_MODE2;
92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
99 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
101 struct ps2dev *ps2dev = &psmouse->ps2dev;
106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
108 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
109 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
110 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
112 if (param[1] != 0x47)
115 if (set_properties) {
116 psmouse->vendor = "Synaptics";
117 psmouse->name = "TouchPad";
123 void synaptics_reset(struct psmouse *psmouse)
125 /* reset touchpad back to relative mode, gestures enabled */
126 synaptics_mode_cmd(psmouse, 0);
129 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
130 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
132 /* This list has been kindly provided by Synaptics. */
133 static const char * const topbuttonpad_pnp_ids[] = {
143 "LEN0033", /* Helix */
144 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
145 "LEN0035", /* X240 */
146 "LEN0036", /* T440 */
147 "LEN0037", /* X1 Carbon 2nd */
149 "LEN0039", /* T440s */
151 "LEN0042", /* Yoga */
155 "LEN2000", /* S540 */
156 "LEN2001", /* Edge E431 */
157 "LEN2002", /* Edge E531 */
159 "LEN2004", /* L440 */
161 "LEN2006", /* Edge E440/E540 */
170 static const char * const smbus_pnp_ids[] = {
171 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
172 "LEN0048", /* X1 Carbon 3 */
173 "LEN0046", /* X250 */
174 "LEN004a", /* W541 */
175 "LEN200f", /* T450s */
176 "LEN2018", /* T460p */
180 static const char * const forcepad_pnp_ids[] = {
187 * Send a command to the synpatics touchpad by special commands
189 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
193 error = psmouse_sliced_command(psmouse, cmd);
197 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
204 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
212 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
216 *val = be32_to_cpu(resp.be_val);
222 * See also the SYN_ID_* macros
224 static int synaptics_identify(struct psmouse *psmouse,
225 struct synaptics_device_info *info)
229 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
233 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
237 * Read the model-id bytes from the touchpad
238 * see also SYN_MODEL_* macros
240 static int synaptics_model_id(struct psmouse *psmouse,
241 struct synaptics_device_info *info)
243 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
247 * Read the firmware id from the touchpad
249 static int synaptics_firmware_id(struct psmouse *psmouse,
250 struct synaptics_device_info *info)
252 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
257 * Read the board id and the "More Extended Queries" from the touchpad
258 * The board id is encoded in the "QUERY MODES" response
260 static int synaptics_query_modes(struct psmouse *psmouse,
261 struct synaptics_device_info *info)
266 /* firmwares prior 7.5 have no board_id encoded */
267 if (SYN_ID_FULL(info->identity) < 0x705)
270 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
274 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
276 if (SYN_MEXT_CAP_BIT(bid[0]))
277 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
284 * Read the capability-bits from the touchpad
285 * see also the SYN_CAP_* macros
287 static int synaptics_capability(struct psmouse *psmouse,
288 struct synaptics_device_info *info)
292 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
293 &info->capabilities);
297 info->ext_cap = info->ext_cap_0c = 0;
300 * Older firmwares had submodel ID fixed to 0x47
302 if (SYN_ID_FULL(info->identity) < 0x705 &&
303 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
308 * Unless capExtended is set the rest of the flags should be ignored
310 if (!SYN_CAP_EXTENDED(info->capabilities))
311 info->capabilities = 0;
313 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
314 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
317 psmouse_warn(psmouse,
318 "device claims to have extended capabilities, but I'm not able to read them.\n");
321 * if nExtBtn is greater than 8 it should be considered
322 * invalid and treated as 0
324 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
325 info->ext_cap &= ~SYN_CAP_MB_MASK;
329 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
330 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
333 psmouse_warn(psmouse,
334 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
341 * Read touchpad resolution and maximum reported coordinates
342 * Resolution is left zero if touchpad does not support the query
344 static int synaptics_resolution(struct psmouse *psmouse,
345 struct synaptics_device_info *info)
350 if (SYN_ID_MAJOR(info->identity) < 4)
353 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
355 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
356 info->x_res = resp[0]; /* x resolution in units/mm */
357 info->y_res = resp[2]; /* y resolution in units/mm */
361 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
362 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
363 error = synaptics_send_cmd(psmouse,
364 SYN_QUE_EXT_MAX_COORDS, resp);
366 psmouse_warn(psmouse,
367 "device claims to have max coordinates query, but I'm not able to read it.\n");
369 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
370 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
371 psmouse_info(psmouse,
372 "queried max coordinates: x [..%d], y [..%d]\n",
373 info->x_max, info->y_max);
377 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
378 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
380 * Firmware v8.1 does not report proper number of extended
381 * capabilities, but has been proven to report correct min
384 SYN_ID_FULL(info->identity) == 0x801)) {
385 error = synaptics_send_cmd(psmouse,
386 SYN_QUE_EXT_MIN_COORDS, resp);
388 psmouse_warn(psmouse,
389 "device claims to have min coordinates query, but I'm not able to read it.\n");
391 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
392 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
393 psmouse_info(psmouse,
394 "queried min coordinates: x [%d..], y [%d..]\n",
395 info->x_min, info->y_min);
402 static int synaptics_query_hardware(struct psmouse *psmouse,
403 struct synaptics_device_info *info)
407 memset(info, 0, sizeof(*info));
409 error = synaptics_identify(psmouse, info);
413 error = synaptics_model_id(psmouse, info);
417 error = synaptics_firmware_id(psmouse, info);
421 error = synaptics_query_modes(psmouse, info);
425 error = synaptics_capability(psmouse, info);
429 error = synaptics_resolution(psmouse, info);
436 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
438 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
440 static bool cr48_profile_sensor;
442 #define ANY_BOARD_ID 0
443 struct min_max_quirk {
444 const char * const *pnp_ids;
448 u32 x_min, x_max, y_min, y_max;
451 static const struct min_max_quirk min_max_pnpid_table[] = {
453 (const char * const []){"LEN0033", NULL},
454 {ANY_BOARD_ID, ANY_BOARD_ID},
455 1024, 5052, 2258, 4832
458 (const char * const []){"LEN0042", NULL},
459 {ANY_BOARD_ID, ANY_BOARD_ID},
460 1232, 5710, 1156, 4696
463 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
464 "LEN0039", "LEN2002", "LEN2004",
466 {ANY_BOARD_ID, 2961},
467 1024, 5112, 2024, 4832
470 (const char * const []){"LEN2000", NULL},
471 {ANY_BOARD_ID, ANY_BOARD_ID},
472 1024, 5113, 2021, 4832
475 (const char * const []){"LEN2001", NULL},
476 {ANY_BOARD_ID, ANY_BOARD_ID},
477 1024, 5022, 2508, 4832
480 (const char * const []){"LEN2006", NULL},
482 1024, 5045, 2457, 4832
485 (const char * const []){"LEN2006", NULL},
486 {ANY_BOARD_ID, ANY_BOARD_ID},
487 1264, 5675, 1171, 4688
492 /*****************************************************************************
493 * Synaptics communications functions
494 ****************************************************************************/
497 * Synaptics touchpads report the y coordinate from bottom to top, which is
498 * opposite from what userspace expects.
499 * This function is used to invert y before reporting.
501 static int synaptics_invert_y(int y)
503 return YMAX_NOMINAL + YMIN_NOMINAL - y;
507 * Apply quirk(s) if the hardware matches
509 static void synaptics_apply_quirks(struct psmouse *psmouse,
510 struct synaptics_device_info *info)
514 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
515 if (!psmouse_matches_pnp_id(psmouse,
516 min_max_pnpid_table[i].pnp_ids))
519 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
520 info->board_id < min_max_pnpid_table[i].board_id.min)
523 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
524 info->board_id > min_max_pnpid_table[i].board_id.max)
527 info->x_min = min_max_pnpid_table[i].x_min;
528 info->x_max = min_max_pnpid_table[i].x_max;
529 info->y_min = min_max_pnpid_table[i].y_min;
530 info->y_max = min_max_pnpid_table[i].y_max;
531 psmouse_info(psmouse,
532 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
533 info->x_min, info->x_max,
534 info->y_min, info->y_max);
539 static bool synaptics_has_agm(struct synaptics_data *priv)
541 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
542 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
545 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
547 static u8 param = 0xc8;
550 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL);
554 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
561 static int synaptics_set_mode(struct psmouse *psmouse)
563 struct synaptics_data *priv = psmouse->private;
567 if (priv->absolute_mode)
568 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
569 if (priv->disable_gesture)
570 priv->mode |= SYN_BIT_DISABLE_GESTURE;
571 if (psmouse->rate >= 80)
572 priv->mode |= SYN_BIT_HIGH_RATE;
573 if (SYN_CAP_EXTENDED(priv->info.capabilities))
574 priv->mode |= SYN_BIT_W_MODE;
576 error = synaptics_mode_cmd(psmouse, priv->mode);
580 if (priv->absolute_mode && synaptics_has_agm(priv)) {
581 error = synaptics_set_advanced_gesture_mode(psmouse);
584 "Advanced gesture mode init failed: %d\n",
593 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
595 struct synaptics_data *priv = psmouse->private;
598 priv->mode |= SYN_BIT_HIGH_RATE;
601 priv->mode &= ~SYN_BIT_HIGH_RATE;
605 synaptics_mode_cmd(psmouse, priv->mode);
608 /*****************************************************************************
609 * Synaptics pass-through PS/2 port support
610 ****************************************************************************/
611 static int synaptics_pt_write(struct serio *serio, u8 c)
613 struct psmouse *parent = serio_get_drvdata(serio->parent);
614 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
617 error = psmouse_sliced_command(parent, c);
621 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
628 static int synaptics_pt_start(struct serio *serio)
630 struct psmouse *parent = serio_get_drvdata(serio->parent);
631 struct synaptics_data *priv = parent->private;
633 serio_pause_rx(parent->ps2dev.serio);
634 priv->pt_port = serio;
635 serio_continue_rx(parent->ps2dev.serio);
640 static void synaptics_pt_stop(struct serio *serio)
642 struct psmouse *parent = serio_get_drvdata(serio->parent);
643 struct synaptics_data *priv = parent->private;
645 serio_pause_rx(parent->ps2dev.serio);
646 priv->pt_port = NULL;
647 serio_continue_rx(parent->ps2dev.serio);
650 static int synaptics_is_pt_packet(u8 *buf)
652 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
655 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
657 struct psmouse *child = serio_get_drvdata(ptport);
659 if (child && child->state == PSMOUSE_ACTIVATED) {
660 serio_interrupt(ptport, packet[1], 0);
661 serio_interrupt(ptport, packet[4], 0);
662 serio_interrupt(ptport, packet[5], 0);
663 if (child->pktsize == 4)
664 serio_interrupt(ptport, packet[2], 0);
666 serio_interrupt(ptport, packet[1], 0);
670 static void synaptics_pt_activate(struct psmouse *psmouse)
672 struct synaptics_data *priv = psmouse->private;
673 struct psmouse *child = serio_get_drvdata(priv->pt_port);
675 /* adjust the touchpad to child's choice of protocol */
677 if (child->pktsize == 4)
678 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
680 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
682 if (synaptics_mode_cmd(psmouse, priv->mode))
683 psmouse_warn(psmouse,
684 "failed to switch guest protocol\n");
688 static void synaptics_pt_create(struct psmouse *psmouse)
692 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
695 "not enough memory for pass-through port\n");
699 serio->id.type = SERIO_PS_PSTHRU;
700 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
701 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
702 serio->write = synaptics_pt_write;
703 serio->start = synaptics_pt_start;
704 serio->stop = synaptics_pt_stop;
705 serio->parent = psmouse->ps2dev.serio;
707 psmouse->pt_activate = synaptics_pt_activate;
709 psmouse_info(psmouse, "serio: %s port at %s\n",
710 serio->name, psmouse->phys);
711 serio_register_port(serio);
714 /*****************************************************************************
715 * Functions to interpret the absolute mode packets
716 ****************************************************************************/
718 static void synaptics_parse_agm(const u8 buf[],
719 struct synaptics_data *priv,
720 struct synaptics_hw_state *hw)
722 struct synaptics_hw_state *agm = &priv->agm;
725 agm_packet_type = (buf[5] & 0x30) >> 4;
726 switch (agm_packet_type) {
728 /* Gesture packet: (x, y, z) half resolution */
730 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
731 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
732 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
736 /* AGM-CONTACT packet: we are only interested in the count */
737 priv->agm_count = buf[1];
745 static void synaptics_parse_ext_buttons(const u8 buf[],
746 struct synaptics_data *priv,
747 struct synaptics_hw_state *hw)
749 unsigned int ext_bits =
750 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
751 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
753 hw->ext_buttons = buf[4] & ext_mask;
754 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
757 static int synaptics_parse_hw_state(const u8 buf[],
758 struct synaptics_data *priv,
759 struct synaptics_hw_state *hw)
761 memset(hw, 0, sizeof(struct synaptics_hw_state));
763 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
764 hw->w = (((buf[0] & 0x30) >> 2) |
765 ((buf[0] & 0x04) >> 1) |
766 ((buf[3] & 0x04) >> 2));
768 if (synaptics_has_agm(priv) && hw->w == 2) {
769 synaptics_parse_agm(buf, priv, hw);
773 hw->x = (((buf[3] & 0x10) << 8) |
774 ((buf[1] & 0x0f) << 8) |
776 hw->y = (((buf[3] & 0x20) << 7) |
777 ((buf[1] & 0xf0) << 4) |
781 hw->left = (buf[0] & 0x01) ? 1 : 0;
782 hw->right = (buf[0] & 0x02) ? 1 : 0;
784 if (priv->is_forcepad) {
786 * ForcePads, like Clickpads, use middle button
787 * bits to report primary button clicks.
788 * Unfortunately they report primary button not
789 * only when user presses on the pad above certain
790 * threshold, but also when there are more than one
791 * finger on the touchpad, which interferes with
792 * out multi-finger gestures.
796 priv->press = priv->report_press = false;
797 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
799 * Single-finger touch with pressure above
800 * the threshold. If pressure stays long
801 * enough, we'll start reporting primary
802 * button. We rely on the device continuing
803 * sending data even if finger does not
807 priv->press_start = jiffies;
809 } else if (time_after(jiffies,
811 msecs_to_jiffies(50))) {
812 priv->report_press = true;
818 hw->left = priv->report_press;
820 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
822 * Clickpad's button is transmitted as middle button,
823 * however, since it is primary button, we will report
826 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
828 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
829 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
831 hw->scroll = (s8)buf[1];
834 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
835 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
836 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
839 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
840 ((buf[0] ^ buf[3]) & 0x02)) {
841 synaptics_parse_ext_buttons(buf, priv, hw);
844 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
845 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
847 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
848 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
850 hw->left = (buf[0] & 0x01) ? 1 : 0;
851 hw->right = (buf[0] & 0x02) ? 1 : 0;
855 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
856 * is used by some firmware to indicate a finger at the edge of
857 * the touchpad whose precise position cannot be determined, so
858 * convert these values to the maximum axis value.
860 if (hw->x > X_MAX_POSITIVE)
861 hw->x -= 1 << ABS_POS_BITS;
862 else if (hw->x == X_MAX_POSITIVE)
865 if (hw->y > Y_MAX_POSITIVE)
866 hw->y -= 1 << ABS_POS_BITS;
867 else if (hw->y == Y_MAX_POSITIVE)
873 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
874 bool active, int x, int y)
876 input_mt_slot(dev, slot);
877 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
879 input_report_abs(dev, ABS_MT_POSITION_X, x);
880 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
884 static void synaptics_report_semi_mt_data(struct input_dev *dev,
885 const struct synaptics_hw_state *a,
886 const struct synaptics_hw_state *b,
889 if (num_fingers >= 2) {
890 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
892 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
894 } else if (num_fingers == 1) {
895 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
896 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
898 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
899 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
903 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
904 const struct synaptics_hw_state *hw)
906 struct input_dev *dev = psmouse->dev;
907 struct synaptics_data *priv = psmouse->private;
908 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
911 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
914 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
915 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
916 SYN_ID_FULL(priv->info.identity) == 0x802) &&
917 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
920 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
921 for (i = 0; i < ext_bits; i++) {
922 input_report_key(dev, BTN_0 + 2 * i,
923 hw->ext_buttons & BIT(i));
924 input_report_key(dev, BTN_1 + 2 * i,
925 hw->ext_buttons & BIT(i + ext_bits));
931 * This generation of touchpads has the trackstick buttons
932 * physically wired to the touchpad. Re-route them through
933 * the pass-through interface.
938 /* The trackstick expects at most 3 buttons */
939 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
940 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
941 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
943 serio_interrupt(priv->pt_port,
944 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
945 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
949 static void synaptics_report_buttons(struct psmouse *psmouse,
950 const struct synaptics_hw_state *hw)
952 struct input_dev *dev = psmouse->dev;
953 struct synaptics_data *priv = psmouse->private;
955 input_report_key(dev, BTN_LEFT, hw->left);
956 input_report_key(dev, BTN_RIGHT, hw->right);
958 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
959 input_report_key(dev, BTN_MIDDLE, hw->middle);
961 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
962 input_report_key(dev, BTN_FORWARD, hw->up);
963 input_report_key(dev, BTN_BACK, hw->down);
966 synaptics_report_ext_buttons(psmouse, hw);
969 static void synaptics_report_mt_data(struct psmouse *psmouse,
970 const struct synaptics_hw_state *sgm,
973 struct input_dev *dev = psmouse->dev;
974 struct synaptics_data *priv = psmouse->private;
975 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
976 struct input_mt_pos pos[2];
977 int slot[2], nsemi, i;
979 nsemi = clamp_val(num_fingers, 0, 2);
981 for (i = 0; i < nsemi; i++) {
983 pos[i].y = synaptics_invert_y(hw[i]->y);
986 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
988 for (i = 0; i < nsemi; i++) {
989 input_mt_slot(dev, slot[i]);
990 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
991 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
992 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
993 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
996 input_mt_drop_unused(dev);
998 /* Don't use active slot count to generate BTN_TOOL events. */
999 input_mt_report_pointer_emulation(dev, false);
1001 /* Send the number of fingers reported by touchpad itself. */
1002 input_mt_report_finger_count(dev, num_fingers);
1004 synaptics_report_buttons(psmouse, sgm);
1009 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1010 struct synaptics_hw_state *sgm)
1012 struct synaptics_data *priv = psmouse->private;
1016 * Update mt_state using the new finger count and current mt_state.
1020 else if (sgm->w >= 4)
1022 else if (sgm->w == 0)
1024 else if (sgm->w == 1)
1025 num_fingers = priv->agm_count ? priv->agm_count : 3;
1029 /* Send resulting input events to user space */
1030 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1033 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1035 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1038 /* Advanced gesture mode also sends multi finger data */
1039 return synaptics_has_agm(priv);
1043 * called for each full received packet from the touchpad
1045 static void synaptics_process_packet(struct psmouse *psmouse)
1047 struct input_dev *dev = psmouse->dev;
1048 struct synaptics_data *priv = psmouse->private;
1049 struct synaptics_device_info *info = &priv->info;
1050 struct synaptics_hw_state hw;
1054 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1057 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1058 synaptics_image_sensor_process(psmouse, &hw);
1063 priv->scroll += hw.scroll;
1065 while (priv->scroll >= 4) {
1066 input_report_key(dev, BTN_BACK, !hw.down);
1068 input_report_key(dev, BTN_BACK, hw.down);
1072 while (priv->scroll <= -4) {
1073 input_report_key(dev, BTN_FORWARD, !hw.up);
1075 input_report_key(dev, BTN_FORWARD, hw.up);
1082 if (hw.z > 0 && hw.x > 1) {
1085 if (SYN_CAP_EXTENDED(info->capabilities)) {
1088 if (synaptics_has_multifinger(priv))
1089 num_fingers = hw.w + 2;
1092 if (SYN_MODEL_PEN(info->model_id))
1093 ; /* Nothing, treat a pen as a single finger */
1096 if (SYN_CAP_PALMDETECT(info->capabilities))
1097 finger_width = hw.w;
1106 if (cr48_profile_sensor) {
1107 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1111 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1112 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1116 * BTN_TOUCH has to be first as mousedev relies on it when doing
1117 * absolute -> relative conversion
1119 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1120 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1122 if (num_fingers > 0) {
1123 input_report_abs(dev, ABS_X, hw.x);
1124 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1126 input_report_abs(dev, ABS_PRESSURE, hw.z);
1128 if (SYN_CAP_PALMDETECT(info->capabilities))
1129 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1131 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1132 if (synaptics_has_multifinger(priv)) {
1133 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1134 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1137 synaptics_report_buttons(psmouse, &hw);
1142 static bool synaptics_validate_byte(struct psmouse *psmouse,
1143 int idx, enum synaptics_pkt_type pkt_type)
1145 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1146 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1147 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1148 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1149 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1150 const u8 *packet = psmouse->packet;
1152 if (idx < 0 || idx > 4)
1158 case SYN_NEWABS_RELAXED:
1159 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1161 case SYN_NEWABS_STRICT:
1162 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1165 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1168 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1173 static enum synaptics_pkt_type
1174 synaptics_detect_pkt_type(struct psmouse *psmouse)
1178 for (i = 0; i < 5; i++) {
1179 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1180 psmouse_info(psmouse, "using relaxed packet validation\n");
1181 return SYN_NEWABS_RELAXED;
1185 return SYN_NEWABS_STRICT;
1188 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1190 struct synaptics_data *priv = psmouse->private;
1192 if (psmouse->pktcnt >= 6) { /* Full packet received */
1193 if (unlikely(priv->pkt_type == SYN_NEWABS))
1194 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1196 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1197 synaptics_is_pt_packet(psmouse->packet)) {
1199 synaptics_pass_pt_packet(priv->pt_port,
1202 synaptics_process_packet(psmouse);
1204 return PSMOUSE_FULL_PACKET;
1207 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1208 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1211 /*****************************************************************************
1212 * Driver initialization/cleanup functions
1213 ****************************************************************************/
1214 static void set_abs_position_params(struct input_dev *dev,
1215 struct synaptics_device_info *info,
1216 int x_code, int y_code)
1218 int x_min = info->x_min ?: XMIN_NOMINAL;
1219 int x_max = info->x_max ?: XMAX_NOMINAL;
1220 int y_min = info->y_min ?: YMIN_NOMINAL;
1221 int y_max = info->y_max ?: YMAX_NOMINAL;
1222 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1223 SYN_REDUCED_FILTER_FUZZ : 0;
1225 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1226 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1227 input_abs_set_res(dev, x_code, info->x_res);
1228 input_abs_set_res(dev, y_code, info->y_res);
1231 static void set_input_params(struct psmouse *psmouse,
1232 struct synaptics_data *priv)
1234 struct input_dev *dev = psmouse->dev;
1235 struct synaptics_device_info *info = &priv->info;
1238 /* Things that apply to both modes */
1239 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1240 __set_bit(EV_KEY, dev->evbit);
1241 __set_bit(BTN_LEFT, dev->keybit);
1242 __set_bit(BTN_RIGHT, dev->keybit);
1244 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1245 __set_bit(BTN_MIDDLE, dev->keybit);
1247 if (!priv->absolute_mode) {
1249 __set_bit(EV_REL, dev->evbit);
1250 __set_bit(REL_X, dev->relbit);
1251 __set_bit(REL_Y, dev->relbit);
1256 __set_bit(EV_ABS, dev->evbit);
1257 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1258 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1260 if (cr48_profile_sensor)
1261 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1263 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1264 set_abs_position_params(dev, info,
1265 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1266 /* Image sensors can report per-contact pressure */
1267 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1268 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
1270 /* Image sensors can signal 4 and 5 finger clicks */
1271 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1272 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1273 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1274 set_abs_position_params(dev, info,
1275 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1277 * Profile sensor in CR-48 tracks contacts reasonably well,
1278 * other non-image sensors with AGM use semi-mt.
1280 input_mt_init_slots(dev, 2,
1282 (cr48_profile_sensor ?
1283 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1286 if (SYN_CAP_PALMDETECT(info->capabilities))
1287 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1289 __set_bit(BTN_TOUCH, dev->keybit);
1290 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1292 if (synaptics_has_multifinger(priv)) {
1293 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1294 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1297 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1298 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1299 __set_bit(BTN_FORWARD, dev->keybit);
1300 __set_bit(BTN_BACK, dev->keybit);
1303 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1304 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1305 __set_bit(BTN_0 + i, dev->keybit);
1307 __clear_bit(EV_REL, dev->evbit);
1308 __clear_bit(REL_X, dev->relbit);
1309 __clear_bit(REL_Y, dev->relbit);
1311 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1312 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1313 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1314 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1315 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1316 /* Clickpads report only left button */
1317 __clear_bit(BTN_RIGHT, dev->keybit);
1318 __clear_bit(BTN_MIDDLE, dev->keybit);
1322 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1323 void *data, char *buf)
1325 struct synaptics_data *priv = psmouse->private;
1327 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1330 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1331 void *data, const char *buf,
1334 struct synaptics_data *priv = psmouse->private;
1338 err = kstrtouint(buf, 10, &value);
1345 if (value == priv->disable_gesture)
1348 priv->disable_gesture = value;
1350 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1352 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1354 if (synaptics_mode_cmd(psmouse, priv->mode))
1360 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1361 synaptics_show_disable_gesture,
1362 synaptics_set_disable_gesture);
1364 static void synaptics_disconnect(struct psmouse *psmouse)
1366 struct synaptics_data *priv = psmouse->private;
1369 * We might have left a breadcrumb when trying to
1370 * set up SMbus companion.
1372 psmouse_smbus_cleanup(psmouse);
1374 if (!priv->absolute_mode &&
1375 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1376 device_remove_file(&psmouse->ps2dev.serio->dev,
1377 &psmouse_attr_disable_gesture.dattr);
1379 synaptics_reset(psmouse);
1381 psmouse->private = NULL;
1384 static int synaptics_reconnect(struct psmouse *psmouse)
1386 struct synaptics_data *priv = psmouse->private;
1387 struct synaptics_device_info info;
1393 psmouse_reset(psmouse);
1396 * On some boxes, right after resuming, the touchpad
1397 * needs some time to finish initializing (I assume
1398 * it needs time to calibrate) and start responding
1399 * to Synaptics-specific queries, so let's wait a
1404 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1405 error = synaptics_detect(psmouse, 0);
1406 } while (error && ++retry < 3);
1412 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1414 error = synaptics_query_hardware(psmouse, &info);
1416 psmouse_err(psmouse, "Unable to query device.\n");
1420 error = synaptics_set_mode(psmouse);
1422 psmouse_err(psmouse, "Unable to initialize device.\n");
1426 if (info.identity != priv->info.identity ||
1427 info.model_id != priv->info.model_id ||
1428 info.capabilities != priv->info.capabilities ||
1429 info.ext_cap != priv->info.ext_cap) {
1430 psmouse_err(psmouse,
1431 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1432 priv->info.identity, info.identity,
1433 priv->info.model_id, info.model_id,
1434 priv->info.capabilities, info.capabilities,
1435 priv->info.ext_cap, info.ext_cap);
1442 static bool impaired_toshiba_kbc;
1444 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1445 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1447 /* Toshiba Satellite */
1449 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1450 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1454 /* Toshiba Dynabook */
1456 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1457 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1461 /* Toshiba Portege M300 */
1463 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1464 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1469 /* Toshiba Portege M300 */
1471 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1472 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1473 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1481 static bool broken_olpc_ec;
1483 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1484 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1486 /* OLPC XO-1 or XO-1.5 */
1488 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1489 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1496 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1497 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1499 /* Cr-48 Chromebook (Codename Mario) */
1501 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1502 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1509 void __init synaptics_module_init(void)
1511 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1512 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1513 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1516 static int synaptics_init_ps2(struct psmouse *psmouse,
1517 struct synaptics_device_info *info,
1520 struct synaptics_data *priv;
1523 synaptics_apply_quirks(psmouse, info);
1525 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1530 priv->absolute_mode = absolute_mode;
1531 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1532 priv->disable_gesture = true;
1535 * Unfortunately ForcePad capability is not exported over PS/2,
1536 * so we have to resort to checking PNP IDs.
1538 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1540 err = synaptics_set_mode(psmouse);
1542 psmouse_err(psmouse, "Unable to initialize device.\n");
1546 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1547 SYN_NEWABS : SYN_OLDABS;
1549 psmouse_info(psmouse,
1550 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1551 SYN_ID_MODEL(info->identity),
1552 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1554 info->capabilities, info->ext_cap, info->ext_cap_0c,
1555 info->ext_cap_10, info->board_id, info->firmware_id);
1557 set_input_params(psmouse, priv);
1560 * Encode touchpad model so that it can be used to set
1561 * input device->id.version and be visible to userspace.
1562 * Because version is __u16 we have to drop something.
1563 * Hardware info bits seem to be good candidates as they
1564 * are documented to be for Synaptics corp. internal use.
1566 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1567 (info->model_id & 0x000000ff);
1569 if (absolute_mode) {
1570 psmouse->protocol_handler = synaptics_process_byte;
1571 psmouse->pktsize = 6;
1573 /* Relative mode follows standard PS/2 mouse protocol */
1574 psmouse->protocol_handler = psmouse_process_byte;
1575 psmouse->pktsize = 3;
1578 psmouse->set_rate = synaptics_set_rate;
1579 psmouse->disconnect = synaptics_disconnect;
1580 psmouse->reconnect = synaptics_reconnect;
1581 psmouse->cleanup = synaptics_reset;
1582 /* Synaptics can usually stay in sync without extra help */
1583 psmouse->resync_time = 0;
1585 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1586 synaptics_pt_create(psmouse);
1589 * Toshiba's KBC seems to have trouble handling data from
1590 * Synaptics at full rate. Switch to a lower rate (roughly
1591 * the same rate as a standard PS/2 mouse).
1593 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1594 psmouse_info(psmouse,
1595 "Toshiba %s detected, limiting rate to 40pps.\n",
1596 dmi_get_system_info(DMI_PRODUCT_NAME));
1600 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1601 err = device_create_file(&psmouse->ps2dev.serio->dev,
1602 &psmouse_attr_disable_gesture.dattr);
1604 psmouse_err(psmouse,
1605 "Failed to create disable_gesture attribute (%d)",
1618 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1620 struct synaptics_device_info info;
1623 psmouse_reset(psmouse);
1625 error = synaptics_query_hardware(psmouse, &info);
1627 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1631 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1634 int synaptics_init_absolute(struct psmouse *psmouse)
1636 return __synaptics_init(psmouse, true);
1639 int synaptics_init_relative(struct psmouse *psmouse)
1641 return __synaptics_init(psmouse, false);
1644 static int synaptics_setup_ps2(struct psmouse *psmouse,
1645 struct synaptics_device_info *info)
1647 bool absolute_mode = true;
1651 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1652 * packet spew overloads the EC such that key presses on the keyboard
1653 * are missed. Given that, don't even attempt to use Absolute mode.
1654 * Relative mode seems to work just fine.
1656 if (broken_olpc_ec) {
1657 psmouse_info(psmouse,
1658 "OLPC XO detected, forcing relative protocol.\n");
1659 absolute_mode = false;
1662 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1666 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1669 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1671 void __init synaptics_module_init(void)
1675 static int __maybe_unused
1676 synaptics_setup_ps2(struct psmouse *psmouse,
1677 struct synaptics_device_info *info)
1682 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1684 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1687 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1688 * provides a better bandwidth and allow a better control of the touchpads.
1689 * This is used to decide if we need to use this bus or not.
1692 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1693 SYNAPTICS_INTERTOUCH_OFF,
1694 SYNAPTICS_INTERTOUCH_ON,
1697 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1698 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1699 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1700 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1702 static int synaptics_create_intertouch(struct psmouse *psmouse,
1703 struct synaptics_device_info *info,
1704 bool leave_breadcrumbs)
1707 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1708 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1709 const struct rmi_device_platform_data pdata = {
1711 .sensor_type = rmi_sensor_touchpad,
1712 .axis_align.flip_y = true,
1713 .kernel_tracking = false,
1714 .topbuttonpad = topbuttonpad,
1717 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1718 .trackstick_buttons =
1719 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1722 const struct i2c_board_info intertouch_board = {
1723 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1724 .flags = I2C_CLIENT_HOST_NOTIFY,
1727 return psmouse_smbus_init(psmouse, &intertouch_board,
1728 &pdata, sizeof(pdata),
1733 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1734 * and decides to instantiate a SMBus InterTouch device.
1736 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1737 struct synaptics_device_info *info,
1738 bool leave_breadcrumbs)
1742 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1745 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1746 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1747 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1749 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1750 psmouse_info(psmouse,
1751 "Your touchpad (%s) says it can support a different bus. "
1752 "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",
1753 psmouse->ps2dev.serio->firmware_id);
1759 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1761 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1763 if (error == -EAGAIN)
1764 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1766 psmouse_err(psmouse, "unable to create intertouch device\n");
1774 int synaptics_init_smbus(struct psmouse *psmouse)
1776 struct synaptics_device_info info;
1779 psmouse_reset(psmouse);
1781 error = synaptics_query_hardware(psmouse, &info);
1783 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1787 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1790 return synaptics_create_intertouch(psmouse, &info, false);
1793 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1795 static int __maybe_unused
1796 synaptics_setup_intertouch(struct psmouse *psmouse,
1797 struct synaptics_device_info *info,
1798 bool leave_breadcrumbs)
1803 int synaptics_init_smbus(struct psmouse *psmouse)
1808 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1810 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1811 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1813 int synaptics_init(struct psmouse *psmouse)
1815 struct synaptics_device_info info;
1819 psmouse_reset(psmouse);
1821 error = synaptics_query_hardware(psmouse, &info);
1823 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1827 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1828 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1829 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1830 /* Forcepads need F21, which is not ready */
1831 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1832 psmouse_warn(psmouse,
1833 "The touchpad can support a better bus than the too old PS/2 protocol. "
1834 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1837 error = synaptics_setup_intertouch(psmouse, &info, true);
1839 return PSMOUSE_SYNAPTICS_SMBUS;
1842 retval = synaptics_setup_ps2(psmouse, &info);
1845 * Not using any flavor of Synaptics support, so clean up
1846 * SMbus breadcrumbs, if any.
1848 psmouse_smbus_cleanup(psmouse);
1854 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1856 int synaptics_init(struct psmouse *psmouse)
1861 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */