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1/*
2 * Synaptics TouchPad PS/2 mouse driver
3 *
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.
7 *
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
10 *
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)
14 *
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)
18 *
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.
22 *
23 * Trademarks are the property of their respective owners.
24 */
25
26#include <linux/module.h>
27#include <linux/dmi.h>
28#include <linux/input/mt.h>
29#include <linux/serio.h>
30#include <linux/libps2.h>
31#include <linux/slab.h>
32#include "psmouse.h"
33#include "synaptics.h"
34
35/*
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
40 * coordinates.
41 */
42#define XMIN_NOMINAL 1472
43#define XMAX_NOMINAL 5472
44#define YMIN_NOMINAL 1408
45#define YMAX_NOMINAL 4448
46
47
48/*****************************************************************************
49 * Stuff we need even when we do not want native Synaptics support
50 ****************************************************************************/
51
52/*
53 * Set the synaptics touchpad mode byte by special commands
54 */
55static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
56{
57 unsigned char param[1];
58
59 if (psmouse_sliced_command(psmouse, mode))
60 return -1;
61 param[0] = SYN_PS_SET_MODE2;
62 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
63 return -1;
64 return 0;
65}
66
67int synaptics_detect(struct psmouse *psmouse, bool set_properties)
68{
69 struct ps2dev *ps2dev = &psmouse->ps2dev;
70 unsigned char param[4];
71
72 param[0] = 0;
73
74 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
75 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
76 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
77 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
78 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
79
80 if (param[1] != 0x47)
81 return -ENODEV;
82
83 if (set_properties) {
84 psmouse->vendor = "Synaptics";
85 psmouse->name = "TouchPad";
86 }
87
88 return 0;
89}
90
91void synaptics_reset(struct psmouse *psmouse)
92{
93 /* reset touchpad back to relative mode, gestures enabled */
94 synaptics_mode_cmd(psmouse, 0);
95}
96
97#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
98
99/*****************************************************************************
100 * Synaptics communications functions
101 ****************************************************************************/
102
103/*
104 * Send a command to the synpatics touchpad by special commands
105 */
106static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
107{
108 if (psmouse_sliced_command(psmouse, c))
109 return -1;
110 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
111 return -1;
112 return 0;
113}
114
115/*
116 * Read the model-id bytes from the touchpad
117 * see also SYN_MODEL_* macros
118 */
119static int synaptics_model_id(struct psmouse *psmouse)
120{
121 struct synaptics_data *priv = psmouse->private;
122 unsigned char mi[3];
123
124 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
125 return -1;
126 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
127 return 0;
128}
129
130/*
131 * Read the capability-bits from the touchpad
132 * see also the SYN_CAP_* macros
133 */
134static int synaptics_capability(struct psmouse *psmouse)
135{
136 struct synaptics_data *priv = psmouse->private;
137 unsigned char cap[3];
138
139 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
140 return -1;
141 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
142 priv->ext_cap = priv->ext_cap_0c = 0;
143
144 /*
145 * Older firmwares had submodel ID fixed to 0x47
146 */
147 if (SYN_ID_FULL(priv->identity) < 0x705 &&
148 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
149 return -1;
150 }
151
152 /*
153 * Unless capExtended is set the rest of the flags should be ignored
154 */
155 if (!SYN_CAP_EXTENDED(priv->capabilities))
156 priv->capabilities = 0;
157
158 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
159 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
160 printk(KERN_ERR "Synaptics claims to have extended capabilities,"
161 " but I'm not able to read them.\n");
162 } else {
163 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
164
165 /*
166 * if nExtBtn is greater than 8 it should be considered
167 * invalid and treated as 0
168 */
169 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
170 priv->ext_cap &= 0xff0fff;
171 }
172 }
173
174 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
175 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
176 printk(KERN_ERR "Synaptics claims to have extended capability 0x0c,"
177 " but I'm not able to read it.\n");
178 } else {
179 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
180 }
181 }
182
183 return 0;
184}
185
186/*
187 * Identify Touchpad
188 * See also the SYN_ID_* macros
189 */
190static int synaptics_identify(struct psmouse *psmouse)
191{
192 struct synaptics_data *priv = psmouse->private;
193 unsigned char id[3];
194
195 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
196 return -1;
197 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
198 if (SYN_ID_IS_SYNAPTICS(priv->identity))
199 return 0;
200 return -1;
201}
202
203/*
204 * Read touchpad resolution and maximum reported coordinates
205 * Resolution is left zero if touchpad does not support the query
206 */
207static int synaptics_resolution(struct psmouse *psmouse)
208{
209 struct synaptics_data *priv = psmouse->private;
210 unsigned char resp[3];
211
212 if (SYN_ID_MAJOR(priv->identity) < 4)
213 return 0;
214
215 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
216 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
217 priv->x_res = resp[0]; /* x resolution in units/mm */
218 priv->y_res = resp[2]; /* y resolution in units/mm */
219 }
220 }
221
222 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
223 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
224 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
225 printk(KERN_ERR "Synaptics claims to have max coordinates"
226 " query, but I'm not able to read it.\n");
227 } else {
228 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
229 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
230 }
231 }
232
233 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
234 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
235 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
236 printk(KERN_ERR "Synaptics claims to have min coordinates"
237 " query, but I'm not able to read it.\n");
238 } else {
239 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
240 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
241 }
242 }
243
244 return 0;
245}
246
247static int synaptics_query_hardware(struct psmouse *psmouse)
248{
249 if (synaptics_identify(psmouse))
250 return -1;
251 if (synaptics_model_id(psmouse))
252 return -1;
253 if (synaptics_capability(psmouse))
254 return -1;
255 if (synaptics_resolution(psmouse))
256 return -1;
257
258 return 0;
259}
260
261static int synaptics_set_absolute_mode(struct psmouse *psmouse)
262{
263 struct synaptics_data *priv = psmouse->private;
264
265 priv->mode = SYN_BIT_ABSOLUTE_MODE;
266 if (SYN_ID_MAJOR(priv->identity) >= 4)
267 priv->mode |= SYN_BIT_DISABLE_GESTURE;
268 if (SYN_CAP_EXTENDED(priv->capabilities))
269 priv->mode |= SYN_BIT_W_MODE;
270
271 if (synaptics_mode_cmd(psmouse, priv->mode))
272 return -1;
273
274 return 0;
275}
276
277static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
278{
279 struct synaptics_data *priv = psmouse->private;
280
281 if (rate >= 80) {
282 priv->mode |= SYN_BIT_HIGH_RATE;
283 psmouse->rate = 80;
284 } else {
285 priv->mode &= ~SYN_BIT_HIGH_RATE;
286 psmouse->rate = 40;
287 }
288
289 synaptics_mode_cmd(psmouse, priv->mode);
290}
291
292static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
293{
294 static unsigned char param = 0xc8;
295 struct synaptics_data *priv = psmouse->private;
296
297 if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
298 return 0;
299
300 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
301 return -1;
302 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE))
303 return -1;
304
305 /* Advanced gesture mode also sends multi finger data */
306 priv->capabilities |= BIT(1);
307
308 return 0;
309}
310
311/*****************************************************************************
312 * Synaptics pass-through PS/2 port support
313 ****************************************************************************/
314static int synaptics_pt_write(struct serio *serio, unsigned char c)
315{
316 struct psmouse *parent = serio_get_drvdata(serio->parent);
317 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
318
319 if (psmouse_sliced_command(parent, c))
320 return -1;
321 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
322 return -1;
323 return 0;
324}
325
326static int synaptics_pt_start(struct serio *serio)
327{
328 struct psmouse *parent = serio_get_drvdata(serio->parent);
329 struct synaptics_data *priv = parent->private;
330
331 serio_pause_rx(parent->ps2dev.serio);
332 priv->pt_port = serio;
333 serio_continue_rx(parent->ps2dev.serio);
334
335 return 0;
336}
337
338static void synaptics_pt_stop(struct serio *serio)
339{
340 struct psmouse *parent = serio_get_drvdata(serio->parent);
341 struct synaptics_data *priv = parent->private;
342
343 serio_pause_rx(parent->ps2dev.serio);
344 priv->pt_port = NULL;
345 serio_continue_rx(parent->ps2dev.serio);
346}
347
348static int synaptics_is_pt_packet(unsigned char *buf)
349{
350 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
351}
352
353static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
354{
355 struct psmouse *child = serio_get_drvdata(ptport);
356
357 if (child && child->state == PSMOUSE_ACTIVATED) {
358 serio_interrupt(ptport, packet[1], 0);
359 serio_interrupt(ptport, packet[4], 0);
360 serio_interrupt(ptport, packet[5], 0);
361 if (child->pktsize == 4)
362 serio_interrupt(ptport, packet[2], 0);
363 } else
364 serio_interrupt(ptport, packet[1], 0);
365}
366
367static void synaptics_pt_activate(struct psmouse *psmouse)
368{
369 struct synaptics_data *priv = psmouse->private;
370 struct psmouse *child = serio_get_drvdata(priv->pt_port);
371
372 /* adjust the touchpad to child's choice of protocol */
373 if (child) {
374 if (child->pktsize == 4)
375 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
376 else
377 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
378
379 if (synaptics_mode_cmd(psmouse, priv->mode))
380 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
381 }
382}
383
384static void synaptics_pt_create(struct psmouse *psmouse)
385{
386 struct serio *serio;
387
388 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
389 if (!serio) {
390 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
391 return;
392 }
393
394 serio->id.type = SERIO_PS_PSTHRU;
395 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
396 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
397 serio->write = synaptics_pt_write;
398 serio->start = synaptics_pt_start;
399 serio->stop = synaptics_pt_stop;
400 serio->parent = psmouse->ps2dev.serio;
401
402 psmouse->pt_activate = synaptics_pt_activate;
403
404 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
405 serio_register_port(serio);
406}
407
408/*****************************************************************************
409 * Functions to interpret the absolute mode packets
410 ****************************************************************************/
411
412static int synaptics_parse_hw_state(const unsigned char buf[],
413 struct synaptics_data *priv,
414 struct synaptics_hw_state *hw)
415{
416 memset(hw, 0, sizeof(struct synaptics_hw_state));
417
418 if (SYN_MODEL_NEWABS(priv->model_id)) {
419 hw->w = (((buf[0] & 0x30) >> 2) |
420 ((buf[0] & 0x04) >> 1) |
421 ((buf[3] & 0x04) >> 2));
422
423 hw->left = (buf[0] & 0x01) ? 1 : 0;
424 hw->right = (buf[0] & 0x02) ? 1 : 0;
425
426 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
427 /*
428 * Clickpad's button is transmitted as middle button,
429 * however, since it is primary button, we will report
430 * it as BTN_LEFT.
431 */
432 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
433
434 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
435 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
436 if (hw->w == 2)
437 hw->scroll = (signed char)(buf[1]);
438 }
439
440 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
441 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
442 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
443 }
444
445 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) {
446 /* Gesture packet: (x, y, z) at half resolution */
447 priv->mt.x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
448 priv->mt.y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
449 priv->mt.z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
450 return 1;
451 }
452
453 hw->x = (((buf[3] & 0x10) << 8) |
454 ((buf[1] & 0x0f) << 8) |
455 buf[4]);
456 hw->y = (((buf[3] & 0x20) << 7) |
457 ((buf[1] & 0xf0) << 4) |
458 buf[5]);
459 hw->z = buf[2];
460
461 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
462 ((buf[0] ^ buf[3]) & 0x02)) {
463 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
464 default:
465 /*
466 * if nExtBtn is greater than 8 it should be
467 * considered invalid and treated as 0
468 */
469 break;
470 case 8:
471 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
472 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
473 case 6:
474 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
475 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
476 case 4:
477 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
478 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
479 case 2:
480 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
481 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
482 }
483 }
484 } else {
485 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
486 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
487
488 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
489 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
490
491 hw->left = (buf[0] & 0x01) ? 1 : 0;
492 hw->right = (buf[0] & 0x02) ? 1 : 0;
493 }
494
495 return 0;
496}
497
498static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
499 bool active, int x, int y)
500{
501 input_mt_slot(dev, slot);
502 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
503 if (active) {
504 input_report_abs(dev, ABS_MT_POSITION_X, x);
505 input_report_abs(dev, ABS_MT_POSITION_Y,
506 YMAX_NOMINAL + YMIN_NOMINAL - y);
507 }
508}
509
510static void synaptics_report_semi_mt_data(struct input_dev *dev,
511 const struct synaptics_hw_state *a,
512 const struct synaptics_hw_state *b,
513 int num_fingers)
514{
515 if (num_fingers >= 2) {
516 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
517 min(a->y, b->y));
518 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
519 max(a->y, b->y));
520 } else if (num_fingers == 1) {
521 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
522 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
523 } else {
524 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
525 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
526 }
527}
528
529/*
530 * called for each full received packet from the touchpad
531 */
532static void synaptics_process_packet(struct psmouse *psmouse)
533{
534 struct input_dev *dev = psmouse->dev;
535 struct synaptics_data *priv = psmouse->private;
536 struct synaptics_hw_state hw;
537 int num_fingers;
538 int finger_width;
539 int i;
540
541 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
542 return;
543
544 if (hw.scroll) {
545 priv->scroll += hw.scroll;
546
547 while (priv->scroll >= 4) {
548 input_report_key(dev, BTN_BACK, !hw.down);
549 input_sync(dev);
550 input_report_key(dev, BTN_BACK, hw.down);
551 input_sync(dev);
552 priv->scroll -= 4;
553 }
554 while (priv->scroll <= -4) {
555 input_report_key(dev, BTN_FORWARD, !hw.up);
556 input_sync(dev);
557 input_report_key(dev, BTN_FORWARD, hw.up);
558 input_sync(dev);
559 priv->scroll += 4;
560 }
561 return;
562 }
563
564 if (hw.z > 0 && hw.x > 1) {
565 num_fingers = 1;
566 finger_width = 5;
567 if (SYN_CAP_EXTENDED(priv->capabilities)) {
568 switch (hw.w) {
569 case 0 ... 1:
570 if (SYN_CAP_MULTIFINGER(priv->capabilities))
571 num_fingers = hw.w + 2;
572 break;
573 case 2:
574 if (SYN_MODEL_PEN(priv->model_id))
575 ; /* Nothing, treat a pen as a single finger */
576 break;
577 case 4 ... 15:
578 if (SYN_CAP_PALMDETECT(priv->capabilities))
579 finger_width = hw.w;
580 break;
581 }
582 }
583 } else {
584 num_fingers = 0;
585 finger_width = 0;
586 }
587
588 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
589 synaptics_report_semi_mt_data(dev, &hw, &priv->mt, num_fingers);
590
591 /* Post events
592 * BTN_TOUCH has to be first as mousedev relies on it when doing
593 * absolute -> relative conversion
594 */
595 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
596 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
597
598 if (num_fingers > 0) {
599 input_report_abs(dev, ABS_X, hw.x);
600 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
601 }
602 input_report_abs(dev, ABS_PRESSURE, hw.z);
603
604 if (SYN_CAP_PALMDETECT(priv->capabilities))
605 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
606
607 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
608 input_report_key(dev, BTN_LEFT, hw.left);
609 input_report_key(dev, BTN_RIGHT, hw.right);
610
611 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
612 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
613 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
614 }
615
616 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
617 input_report_key(dev, BTN_MIDDLE, hw.middle);
618
619 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
620 input_report_key(dev, BTN_FORWARD, hw.up);
621 input_report_key(dev, BTN_BACK, hw.down);
622 }
623
624 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
625 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
626
627 input_sync(dev);
628}
629
630static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
631{
632 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
633 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
634 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
635 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
636 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
637
638 if (idx < 0 || idx > 4)
639 return 0;
640
641 switch (pkt_type) {
642
643 case SYN_NEWABS:
644 case SYN_NEWABS_RELAXED:
645 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
646
647 case SYN_NEWABS_STRICT:
648 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
649
650 case SYN_OLDABS:
651 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
652
653 default:
654 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
655 return 0;
656 }
657}
658
659static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
660{
661 int i;
662
663 for (i = 0; i < 5; i++)
664 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
665 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
666 return SYN_NEWABS_RELAXED;
667 }
668
669 return SYN_NEWABS_STRICT;
670}
671
672static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
673{
674 struct synaptics_data *priv = psmouse->private;
675
676 if (psmouse->pktcnt >= 6) { /* Full packet received */
677 if (unlikely(priv->pkt_type == SYN_NEWABS))
678 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
679
680 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
681 synaptics_is_pt_packet(psmouse->packet)) {
682 if (priv->pt_port)
683 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
684 } else
685 synaptics_process_packet(psmouse);
686
687 return PSMOUSE_FULL_PACKET;
688 }
689
690 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
691 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
692}
693
694/*****************************************************************************
695 * Driver initialization/cleanup functions
696 ****************************************************************************/
697static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
698{
699 int i;
700 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
701 SYN_REDUCED_FILTER_FUZZ : 0;
702
703 __set_bit(INPUT_PROP_POINTER, dev->propbit);
704
705 __set_bit(EV_ABS, dev->evbit);
706 input_set_abs_params(dev, ABS_X,
707 priv->x_min ?: XMIN_NOMINAL,
708 priv->x_max ?: XMAX_NOMINAL,
709 fuzz, 0);
710 input_set_abs_params(dev, ABS_Y,
711 priv->y_min ?: YMIN_NOMINAL,
712 priv->y_max ?: YMAX_NOMINAL,
713 fuzz, 0);
714 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
715
716 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
717 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
718 input_mt_init_slots(dev, 2);
719 input_set_abs_params(dev, ABS_MT_POSITION_X,
720 priv->x_min ?: XMIN_NOMINAL,
721 priv->x_max ?: XMAX_NOMINAL,
722 fuzz, 0);
723 input_set_abs_params(dev, ABS_MT_POSITION_Y,
724 priv->y_min ?: YMIN_NOMINAL,
725 priv->y_max ?: YMAX_NOMINAL,
726 fuzz, 0);
727
728 input_abs_set_res(dev, ABS_MT_POSITION_X, priv->x_res);
729 input_abs_set_res(dev, ABS_MT_POSITION_Y, priv->y_res);
730 }
731
732 if (SYN_CAP_PALMDETECT(priv->capabilities))
733 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
734
735 __set_bit(EV_KEY, dev->evbit);
736 __set_bit(BTN_TOUCH, dev->keybit);
737 __set_bit(BTN_TOOL_FINGER, dev->keybit);
738 __set_bit(BTN_LEFT, dev->keybit);
739 __set_bit(BTN_RIGHT, dev->keybit);
740
741 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
742 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
743 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
744 }
745
746 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
747 __set_bit(BTN_MIDDLE, dev->keybit);
748
749 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
750 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
751 __set_bit(BTN_FORWARD, dev->keybit);
752 __set_bit(BTN_BACK, dev->keybit);
753 }
754
755 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
756 __set_bit(BTN_0 + i, dev->keybit);
757
758 __clear_bit(EV_REL, dev->evbit);
759 __clear_bit(REL_X, dev->relbit);
760 __clear_bit(REL_Y, dev->relbit);
761
762 input_abs_set_res(dev, ABS_X, priv->x_res);
763 input_abs_set_res(dev, ABS_Y, priv->y_res);
764
765 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
766 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
767 /* Clickpads report only left button */
768 __clear_bit(BTN_RIGHT, dev->keybit);
769 __clear_bit(BTN_MIDDLE, dev->keybit);
770 }
771}
772
773static void synaptics_disconnect(struct psmouse *psmouse)
774{
775 synaptics_reset(psmouse);
776 kfree(psmouse->private);
777 psmouse->private = NULL;
778}
779
780static int synaptics_reconnect(struct psmouse *psmouse)
781{
782 struct synaptics_data *priv = psmouse->private;
783 struct synaptics_data old_priv = *priv;
784 int retry = 0;
785 int error;
786
787 do {
788 psmouse_reset(psmouse);
789 error = synaptics_detect(psmouse, 0);
790 } while (error && ++retry < 3);
791
792 if (error)
793 return -1;
794
795 if (retry > 1)
796 printk(KERN_DEBUG "Synaptics reconnected after %d tries\n",
797 retry);
798
799 if (synaptics_query_hardware(psmouse)) {
800 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
801 return -1;
802 }
803
804 if (synaptics_set_absolute_mode(psmouse)) {
805 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
806 return -1;
807 }
808
809 if (synaptics_set_advanced_gesture_mode(psmouse)) {
810 printk(KERN_ERR "Advanced gesture mode reconnect failed.\n");
811 return -1;
812 }
813
814 if (old_priv.identity != priv->identity ||
815 old_priv.model_id != priv->model_id ||
816 old_priv.capabilities != priv->capabilities ||
817 old_priv.ext_cap != priv->ext_cap) {
818 printk(KERN_ERR "Synaptics hardware appears to be different: "
819 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
820 old_priv.identity, priv->identity,
821 old_priv.model_id, priv->model_id,
822 old_priv.capabilities, priv->capabilities,
823 old_priv.ext_cap, priv->ext_cap);
824 return -1;
825 }
826
827 return 0;
828}
829
830static bool impaired_toshiba_kbc;
831
832static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
833#if defined(CONFIG_DMI) && defined(CONFIG_X86)
834 {
835 /* Toshiba Satellite */
836 .matches = {
837 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
838 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
839 },
840 },
841 {
842 /* Toshiba Dynabook */
843 .matches = {
844 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
845 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
846 },
847 },
848 {
849 /* Toshiba Portege M300 */
850 .matches = {
851 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
852 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
853 },
854
855 },
856 {
857 /* Toshiba Portege M300 */
858 .matches = {
859 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
860 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
861 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
862 },
863
864 },
865#endif
866 { }
867};
868
869static bool broken_olpc_ec;
870
871static const struct dmi_system_id __initconst olpc_dmi_table[] = {
872#if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
873 {
874 /* OLPC XO-1 or XO-1.5 */
875 .matches = {
876 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
877 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
878 },
879 },
880#endif
881 { }
882};
883
884void __init synaptics_module_init(void)
885{
886 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
887 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
888}
889
890int synaptics_init(struct psmouse *psmouse)
891{
892 struct synaptics_data *priv;
893
894 /*
895 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
896 * the HGPK, it quickly degrades and the hardware becomes jumpy and
897 * overly sensitive. Not only that, but the constant packet spew
898 * (even at a lowered 40pps rate) overloads the EC such that key
899 * presses on the keyboard are missed. Given all of that, don't
900 * even attempt to use Synaptics mode. Relative mode seems to work
901 * just fine.
902 */
903 if (broken_olpc_ec) {
904 printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
905 return -ENODEV;
906 }
907
908 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
909 if (!priv)
910 return -ENOMEM;
911
912 psmouse_reset(psmouse);
913
914 if (synaptics_query_hardware(psmouse)) {
915 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
916 goto init_fail;
917 }
918
919 if (synaptics_set_absolute_mode(psmouse)) {
920 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
921 goto init_fail;
922 }
923
924 if (synaptics_set_advanced_gesture_mode(psmouse)) {
925 printk(KERN_ERR "Advanced gesture mode init failed.\n");
926 goto init_fail;
927 }
928
929 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
930
931 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
932 SYN_ID_MODEL(priv->identity),
933 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
934 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
935
936 set_input_params(psmouse->dev, priv);
937
938 /*
939 * Encode touchpad model so that it can be used to set
940 * input device->id.version and be visible to userspace.
941 * Because version is __u16 we have to drop something.
942 * Hardware info bits seem to be good candidates as they
943 * are documented to be for Synaptics corp. internal use.
944 */
945 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
946 (priv->model_id & 0x000000ff);
947
948 psmouse->protocol_handler = synaptics_process_byte;
949 psmouse->set_rate = synaptics_set_rate;
950 psmouse->disconnect = synaptics_disconnect;
951 psmouse->reconnect = synaptics_reconnect;
952 psmouse->cleanup = synaptics_reset;
953 psmouse->pktsize = 6;
954 /* Synaptics can usually stay in sync without extra help */
955 psmouse->resync_time = 0;
956
957 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
958 synaptics_pt_create(psmouse);
959
960 /*
961 * Toshiba's KBC seems to have trouble handling data from
962 * Synaptics at full rate. Switch to a lower rate (roughly
963 * the same rate as a standard PS/2 mouse).
964 */
965 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
966 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
967 dmi_get_system_info(DMI_PRODUCT_NAME));
968 psmouse->rate = 40;
969 }
970
971 return 0;
972
973 init_fail:
974 kfree(priv);
975 return -1;
976}
977
978bool synaptics_supported(void)
979{
980 return true;
981}
982
983#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
984
985void __init synaptics_module_init(void)
986{
987}
988
989int synaptics_init(struct psmouse *psmouse)
990{
991 return -ENOSYS;
992}
993
994bool synaptics_supported(void)
995{
996 return false;
997}
998
999#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Synaptics TouchPad PS/2 mouse driver
4 *
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.
8 *
9 * 2003 Peter Osterlund <petero2@telia.com>
10 * Ported to 2.5 input device infrastructure.
11 *
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)
15 *
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)
19 *
20 * Trademarks are the property of their respective owners.
21 */
22
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>
32#include "psmouse.h"
33#include "synaptics.h"
34
35/*
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
40 * coordinates.
41 */
42#define XMIN 0
43#define XMAX 6143
44#define YMIN 0
45#define YMAX 6143
46#define XMIN_NOMINAL 1472
47#define XMAX_NOMINAL 5472
48#define YMIN_NOMINAL 1408
49#define YMAX_NOMINAL 4448
50
51/* Size in bits of absolute position values reported by the hardware */
52#define ABS_POS_BITS 13
53
54/*
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.
59 *
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.
65 */
66#define X_MAX_POSITIVE 8176
67#define Y_MAX_POSITIVE 8176
68
69/* maximum ABS_MT_POSITION displacement (in mm) */
70#define DMAX 10
71
72/*****************************************************************************
73 * Stuff we need even when we do not want native Synaptics support
74 ****************************************************************************/
75
76/*
77 * Set the synaptics touchpad mode byte by special commands
78 */
79static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
80{
81 u8 param[1];
82 int error;
83
84 error = ps2_sliced_command(&psmouse->ps2dev, mode);
85 if (error)
86 return error;
87
88 param[0] = SYN_PS_SET_MODE2;
89 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
90 if (error)
91 return error;
92
93 return 0;
94}
95
96int synaptics_detect(struct psmouse *psmouse, bool set_properties)
97{
98 struct ps2dev *ps2dev = &psmouse->ps2dev;
99 u8 param[4] = { 0 };
100
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);
106
107 if (param[1] != 0x47)
108 return -ENODEV;
109
110 if (set_properties) {
111 psmouse->vendor = "Synaptics";
112 psmouse->name = "TouchPad";
113 }
114
115 return 0;
116}
117
118void synaptics_reset(struct psmouse *psmouse)
119{
120 /* reset touchpad back to relative mode, gestures enabled */
121 synaptics_mode_cmd(psmouse, 0);
122}
123
124#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
125 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
126
127/* This list has been kindly provided by Synaptics. */
128static const char * const topbuttonpad_pnp_ids[] = {
129 "LEN0017",
130 "LEN0018",
131 "LEN0019",
132 "LEN0023",
133 "LEN002A",
134 "LEN002B",
135 "LEN002C",
136 "LEN002D",
137 "LEN002E",
138 "LEN0033", /* Helix */
139 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
140 "LEN0035", /* X240 */
141 "LEN0036", /* T440 */
142 "LEN0037", /* X1 Carbon 2nd */
143 "LEN0038",
144 "LEN0039", /* T440s */
145 "LEN0041",
146 "LEN0042", /* Yoga */
147 "LEN0045",
148 "LEN0047",
149 "LEN2000", /* S540 */
150 "LEN2001", /* Edge E431 */
151 "LEN2002", /* Edge E531 */
152 "LEN2003",
153 "LEN2004", /* L440 */
154 "LEN2005",
155 "LEN2006", /* Edge E440/E540 */
156 "LEN2007",
157 "LEN2008",
158 "LEN2009",
159 "LEN200A",
160 "LEN200B",
161 NULL
162};
163
164static const char * const smbus_pnp_ids[] = {
165 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
166 "LEN0048", /* X1 Carbon 3 */
167 "LEN0046", /* X250 */
168 "LEN0049", /* Yoga 11e */
169 "LEN004a", /* W541 */
170 "LEN005b", /* P50 */
171 "LEN005e", /* T560 */
172 "LEN006c", /* T470s */
173 "LEN007a", /* T470s */
174 "LEN0071", /* T480 */
175 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
176 "LEN0073", /* X1 Carbon G5 (Elantech) */
177 "LEN0091", /* X1 Carbon 6 */
178 "LEN0092", /* X1 Carbon 6 */
179 "LEN0093", /* T480 */
180 "LEN0096", /* X280 */
181 "LEN0097", /* X280 -> ALPS trackpoint */
182 "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */
183 "LEN009b", /* T580 */
184 "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */
185 "LEN040f", /* P1 Gen 3 */
186 "LEN0411", /* L14 Gen 1 */
187 "LEN200f", /* T450s */
188 "LEN2044", /* L470 */
189 "LEN2054", /* E480 */
190 "LEN2055", /* E580 */
191 "LEN2068", /* T14 Gen 1 */
192 "SYN3015", /* HP EliteBook 840 G2 */
193 "SYN3052", /* HP EliteBook 840 G4 */
194 "SYN3221", /* HP 15-ay000 */
195 "SYN323d", /* HP Spectre X360 13-w013dx */
196 "SYN3257", /* HP Envy 13-ad105ng */
197 NULL
198};
199
200static const char * const forcepad_pnp_ids[] = {
201 "SYN300D",
202 "SYN3014",
203 NULL
204};
205
206/*
207 * Send a command to the synaptics touchpad by special commands
208 */
209static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
210{
211 int error;
212
213 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
214 if (error)
215 return error;
216
217 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
218 if (error)
219 return error;
220
221 return 0;
222}
223
224static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
225{
226 int error;
227 union {
228 __be32 be_val;
229 char buf[4];
230 } resp = { 0 };
231
232 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
233 if (error)
234 return error;
235
236 *val = be32_to_cpu(resp.be_val);
237 return 0;
238}
239
240/*
241 * Identify Touchpad
242 * See also the SYN_ID_* macros
243 */
244static int synaptics_identify(struct psmouse *psmouse,
245 struct synaptics_device_info *info)
246{
247 int error;
248
249 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
250 if (error)
251 return error;
252
253 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
254}
255
256/*
257 * Read the model-id bytes from the touchpad
258 * see also SYN_MODEL_* macros
259 */
260static int synaptics_model_id(struct psmouse *psmouse,
261 struct synaptics_device_info *info)
262{
263 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
264}
265
266/*
267 * Read the firmware id from the touchpad
268 */
269static int synaptics_firmware_id(struct psmouse *psmouse,
270 struct synaptics_device_info *info)
271{
272 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
273 &info->firmware_id);
274}
275
276/*
277 * Read the board id and the "More Extended Queries" from the touchpad
278 * The board id is encoded in the "QUERY MODES" response
279 */
280static int synaptics_query_modes(struct psmouse *psmouse,
281 struct synaptics_device_info *info)
282{
283 u8 bid[3];
284 int error;
285
286 /* firmwares prior 7.5 have no board_id encoded */
287 if (SYN_ID_FULL(info->identity) < 0x705)
288 return 0;
289
290 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
291 if (error)
292 return error;
293
294 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
295
296 if (SYN_MEXT_CAP_BIT(bid[0]))
297 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
298 &info->ext_cap_10);
299
300 return 0;
301}
302
303/*
304 * Read the capability-bits from the touchpad
305 * see also the SYN_CAP_* macros
306 */
307static int synaptics_capability(struct psmouse *psmouse,
308 struct synaptics_device_info *info)
309{
310 int error;
311
312 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
313 &info->capabilities);
314 if (error)
315 return error;
316
317 info->ext_cap = info->ext_cap_0c = 0;
318
319 /*
320 * Older firmwares had submodel ID fixed to 0x47
321 */
322 if (SYN_ID_FULL(info->identity) < 0x705 &&
323 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
324 return -ENXIO;
325 }
326
327 /*
328 * Unless capExtended is set the rest of the flags should be ignored
329 */
330 if (!SYN_CAP_EXTENDED(info->capabilities))
331 info->capabilities = 0;
332
333 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
334 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
335 &info->ext_cap);
336 if (error) {
337 psmouse_warn(psmouse,
338 "device claims to have extended capabilities, but I'm not able to read them.\n");
339 } else {
340 /*
341 * if nExtBtn is greater than 8 it should be considered
342 * invalid and treated as 0
343 */
344 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
345 info->ext_cap &= ~SYN_CAP_MB_MASK;
346 }
347 }
348
349 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
350 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
351 &info->ext_cap_0c);
352 if (error)
353 psmouse_warn(psmouse,
354 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
355 }
356
357 return 0;
358}
359
360/*
361 * Read touchpad resolution and maximum reported coordinates
362 * Resolution is left zero if touchpad does not support the query
363 */
364static int synaptics_resolution(struct psmouse *psmouse,
365 struct synaptics_device_info *info)
366{
367 u8 resp[3];
368 int error;
369
370 if (SYN_ID_MAJOR(info->identity) < 4)
371 return 0;
372
373 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
374 if (!error) {
375 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
376 info->x_res = resp[0]; /* x resolution in units/mm */
377 info->y_res = resp[2]; /* y resolution in units/mm */
378 }
379 }
380
381 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
382 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
383 error = synaptics_send_cmd(psmouse,
384 SYN_QUE_EXT_MAX_COORDS, resp);
385 if (error) {
386 psmouse_warn(psmouse,
387 "device claims to have max coordinates query, but I'm not able to read it.\n");
388 } else {
389 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
390 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
391 psmouse_info(psmouse,
392 "queried max coordinates: x [..%d], y [..%d]\n",
393 info->x_max, info->y_max);
394 }
395 }
396
397 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
398 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
399 /*
400 * Firmware v8.1 does not report proper number of extended
401 * capabilities, but has been proven to report correct min
402 * coordinates.
403 */
404 SYN_ID_FULL(info->identity) == 0x801)) {
405 error = synaptics_send_cmd(psmouse,
406 SYN_QUE_EXT_MIN_COORDS, resp);
407 if (error) {
408 psmouse_warn(psmouse,
409 "device claims to have min coordinates query, but I'm not able to read it.\n");
410 } else {
411 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
412 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
413 psmouse_info(psmouse,
414 "queried min coordinates: x [%d..], y [%d..]\n",
415 info->x_min, info->y_min);
416 }
417 }
418
419 return 0;
420}
421
422static int synaptics_query_hardware(struct psmouse *psmouse,
423 struct synaptics_device_info *info)
424{
425 int error;
426
427 memset(info, 0, sizeof(*info));
428
429 error = synaptics_identify(psmouse, info);
430 if (error)
431 return error;
432
433 error = synaptics_model_id(psmouse, info);
434 if (error)
435 return error;
436
437 error = synaptics_firmware_id(psmouse, info);
438 if (error)
439 return error;
440
441 error = synaptics_query_modes(psmouse, info);
442 if (error)
443 return error;
444
445 error = synaptics_capability(psmouse, info);
446 if (error)
447 return error;
448
449 error = synaptics_resolution(psmouse, info);
450 if (error)
451 return error;
452
453 return 0;
454}
455
456#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
457
458#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
459
460static bool cr48_profile_sensor;
461
462#define ANY_BOARD_ID 0
463struct min_max_quirk {
464 const char * const *pnp_ids;
465 struct {
466 u32 min, max;
467 } board_id;
468 u32 x_min, x_max, y_min, y_max;
469};
470
471static const struct min_max_quirk min_max_pnpid_table[] = {
472 {
473 (const char * const []){"LEN0033", NULL},
474 {ANY_BOARD_ID, ANY_BOARD_ID},
475 1024, 5052, 2258, 4832
476 },
477 {
478 (const char * const []){"LEN0042", NULL},
479 {ANY_BOARD_ID, ANY_BOARD_ID},
480 1232, 5710, 1156, 4696
481 },
482 {
483 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
484 "LEN0039", "LEN2002", "LEN2004",
485 NULL},
486 {ANY_BOARD_ID, 2961},
487 1024, 5112, 2024, 4832
488 },
489 {
490 (const char * const []){"LEN2000", NULL},
491 {ANY_BOARD_ID, ANY_BOARD_ID},
492 1024, 5113, 2021, 4832
493 },
494 {
495 (const char * const []){"LEN2001", NULL},
496 {ANY_BOARD_ID, ANY_BOARD_ID},
497 1024, 5022, 2508, 4832
498 },
499 {
500 (const char * const []){"LEN2006", NULL},
501 {2691, 2691},
502 1024, 5045, 2457, 4832
503 },
504 {
505 (const char * const []){"LEN2006", NULL},
506 {ANY_BOARD_ID, ANY_BOARD_ID},
507 1264, 5675, 1171, 4688
508 },
509 { }
510};
511
512/*****************************************************************************
513 * Synaptics communications functions
514 ****************************************************************************/
515
516/*
517 * Synaptics touchpads report the y coordinate from bottom to top, which is
518 * opposite from what userspace expects.
519 * This function is used to invert y before reporting.
520 */
521static int synaptics_invert_y(int y)
522{
523 return YMAX_NOMINAL + YMIN_NOMINAL - y;
524}
525
526/*
527 * Apply quirk(s) if the hardware matches
528 */
529static void synaptics_apply_quirks(struct psmouse *psmouse,
530 struct synaptics_device_info *info)
531{
532 int i;
533
534 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
535 if (!psmouse_matches_pnp_id(psmouse,
536 min_max_pnpid_table[i].pnp_ids))
537 continue;
538
539 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
540 info->board_id < min_max_pnpid_table[i].board_id.min)
541 continue;
542
543 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
544 info->board_id > min_max_pnpid_table[i].board_id.max)
545 continue;
546
547 info->x_min = min_max_pnpid_table[i].x_min;
548 info->x_max = min_max_pnpid_table[i].x_max;
549 info->y_min = min_max_pnpid_table[i].y_min;
550 info->y_max = min_max_pnpid_table[i].y_max;
551 psmouse_info(psmouse,
552 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
553 info->x_min, info->x_max,
554 info->y_min, info->y_max);
555 break;
556 }
557}
558
559static bool synaptics_has_agm(struct synaptics_data *priv)
560{
561 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
562 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
563}
564
565static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
566{
567 static u8 param = 0xc8;
568 int error;
569
570 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
571 if (error)
572 return error;
573
574 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
575 if (error)
576 return error;
577
578 return 0;
579}
580
581static int synaptics_set_mode(struct psmouse *psmouse)
582{
583 struct synaptics_data *priv = psmouse->private;
584 int error;
585
586 priv->mode = 0;
587 if (priv->absolute_mode)
588 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
589 if (priv->disable_gesture)
590 priv->mode |= SYN_BIT_DISABLE_GESTURE;
591 if (psmouse->rate >= 80)
592 priv->mode |= SYN_BIT_HIGH_RATE;
593 if (SYN_CAP_EXTENDED(priv->info.capabilities))
594 priv->mode |= SYN_BIT_W_MODE;
595
596 error = synaptics_mode_cmd(psmouse, priv->mode);
597 if (error)
598 return error;
599
600 if (priv->absolute_mode && synaptics_has_agm(priv)) {
601 error = synaptics_set_advanced_gesture_mode(psmouse);
602 if (error) {
603 psmouse_err(psmouse,
604 "Advanced gesture mode init failed: %d\n",
605 error);
606 return error;
607 }
608 }
609
610 return 0;
611}
612
613static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
614{
615 struct synaptics_data *priv = psmouse->private;
616
617 if (rate >= 80) {
618 priv->mode |= SYN_BIT_HIGH_RATE;
619 psmouse->rate = 80;
620 } else {
621 priv->mode &= ~SYN_BIT_HIGH_RATE;
622 psmouse->rate = 40;
623 }
624
625 synaptics_mode_cmd(psmouse, priv->mode);
626}
627
628/*****************************************************************************
629 * Synaptics pass-through PS/2 port support
630 ****************************************************************************/
631static int synaptics_pt_write(struct serio *serio, u8 c)
632{
633 struct psmouse *parent = psmouse_from_serio(serio->parent);
634 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
635 int error;
636
637 error = ps2_sliced_command(&parent->ps2dev, c);
638 if (error)
639 return error;
640
641 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
642 if (error)
643 return error;
644
645 return 0;
646}
647
648static int synaptics_pt_start(struct serio *serio)
649{
650 struct psmouse *parent = psmouse_from_serio(serio->parent);
651 struct synaptics_data *priv = parent->private;
652
653 guard(serio_pause_rx)(parent->ps2dev.serio);
654 priv->pt_port = serio;
655
656 return 0;
657}
658
659static void synaptics_pt_stop(struct serio *serio)
660{
661 struct psmouse *parent = psmouse_from_serio(serio->parent);
662 struct synaptics_data *priv = parent->private;
663
664 guard(serio_pause_rx)(parent->ps2dev.serio);
665 priv->pt_port = NULL;
666}
667
668static int synaptics_pt_open(struct serio *serio)
669{
670 struct psmouse *parent = psmouse_from_serio(serio->parent);
671 struct synaptics_data *priv = parent->private;
672
673 guard(serio_pause_rx)(parent->ps2dev.serio);
674 priv->pt_port_open = true;
675
676 return 0;
677}
678
679static void synaptics_pt_close(struct serio *serio)
680{
681 struct psmouse *parent = psmouse_from_serio(serio->parent);
682 struct synaptics_data *priv = parent->private;
683
684 guard(serio_pause_rx)(parent->ps2dev.serio);
685 priv->pt_port_open = false;
686}
687
688static int synaptics_is_pt_packet(u8 *buf)
689{
690 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
691}
692
693static void synaptics_pass_pt_packet(struct synaptics_data *priv, u8 *packet)
694{
695 struct serio *ptport;
696
697 ptport = priv->pt_port;
698 if (!ptport)
699 return;
700
701 serio_interrupt(ptport, packet[1], 0);
702
703 if (priv->pt_port_open) {
704 struct psmouse *child = psmouse_from_serio(ptport);
705
706 if (child->state == PSMOUSE_ACTIVATED) {
707 serio_interrupt(ptport, packet[4], 0);
708 serio_interrupt(ptport, packet[5], 0);
709 if (child->pktsize == 4)
710 serio_interrupt(ptport, packet[2], 0);
711 }
712 }
713}
714
715static void synaptics_pt_activate(struct psmouse *psmouse)
716{
717 struct synaptics_data *priv = psmouse->private;
718 struct psmouse *child = psmouse_from_serio(priv->pt_port);
719
720 /* adjust the touchpad to child's choice of protocol */
721 if (child) {
722 if (child->pktsize == 4)
723 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
724 else
725 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
726
727 if (synaptics_mode_cmd(psmouse, priv->mode))
728 psmouse_warn(psmouse,
729 "failed to switch guest protocol\n");
730 }
731}
732
733static void synaptics_pt_create(struct psmouse *psmouse)
734{
735 struct serio *serio;
736
737 serio = kzalloc(sizeof(*serio), GFP_KERNEL);
738 if (!serio) {
739 psmouse_err(psmouse,
740 "not enough memory for pass-through port\n");
741 return;
742 }
743
744 serio->id.type = SERIO_PS_PSTHRU;
745 strscpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
746 strscpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
747 serio->write = synaptics_pt_write;
748 serio->start = synaptics_pt_start;
749 serio->stop = synaptics_pt_stop;
750 serio->open = synaptics_pt_open;
751 serio->close = synaptics_pt_close;
752 serio->parent = psmouse->ps2dev.serio;
753
754 psmouse->pt_activate = synaptics_pt_activate;
755
756 psmouse_info(psmouse, "serio: %s port at %s\n",
757 serio->name, psmouse->phys);
758 serio_register_port(serio);
759}
760
761/*****************************************************************************
762 * Functions to interpret the absolute mode packets
763 ****************************************************************************/
764
765static void synaptics_parse_agm(const u8 buf[],
766 struct synaptics_data *priv,
767 struct synaptics_hw_state *hw)
768{
769 struct synaptics_hw_state *agm = &priv->agm;
770 int agm_packet_type;
771
772 agm_packet_type = (buf[5] & 0x30) >> 4;
773 switch (agm_packet_type) {
774 case 1:
775 /* Gesture packet: (x, y, z) half resolution */
776 agm->w = hw->w;
777 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
778 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
779 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
780 break;
781
782 case 2:
783 /* AGM-CONTACT packet: we are only interested in the count */
784 priv->agm_count = buf[1];
785 break;
786
787 default:
788 break;
789 }
790}
791
792static void synaptics_parse_ext_buttons(const u8 buf[],
793 struct synaptics_data *priv,
794 struct synaptics_hw_state *hw)
795{
796 unsigned int ext_bits =
797 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
798 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
799
800 hw->ext_buttons = buf[4] & ext_mask;
801 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
802}
803
804static int synaptics_parse_hw_state(const u8 buf[],
805 struct synaptics_data *priv,
806 struct synaptics_hw_state *hw)
807{
808 memset(hw, 0, sizeof(struct synaptics_hw_state));
809
810 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
811 hw->w = (((buf[0] & 0x30) >> 2) |
812 ((buf[0] & 0x04) >> 1) |
813 ((buf[3] & 0x04) >> 2));
814
815 if (synaptics_has_agm(priv) && hw->w == 2) {
816 synaptics_parse_agm(buf, priv, hw);
817 return 1;
818 }
819
820 hw->x = (((buf[3] & 0x10) << 8) |
821 ((buf[1] & 0x0f) << 8) |
822 buf[4]);
823 hw->y = (((buf[3] & 0x20) << 7) |
824 ((buf[1] & 0xf0) << 4) |
825 buf[5]);
826 hw->z = buf[2];
827
828 hw->left = (buf[0] & 0x01) ? 1 : 0;
829 hw->right = (buf[0] & 0x02) ? 1 : 0;
830
831 if (priv->is_forcepad) {
832 /*
833 * ForcePads, like Clickpads, use middle button
834 * bits to report primary button clicks.
835 * Unfortunately they report primary button not
836 * only when user presses on the pad above certain
837 * threshold, but also when there are more than one
838 * finger on the touchpad, which interferes with
839 * out multi-finger gestures.
840 */
841 if (hw->z == 0) {
842 /* No contacts */
843 priv->press = priv->report_press = false;
844 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
845 /*
846 * Single-finger touch with pressure above
847 * the threshold. If pressure stays long
848 * enough, we'll start reporting primary
849 * button. We rely on the device continuing
850 * sending data even if finger does not
851 * move.
852 */
853 if (!priv->press) {
854 priv->press_start = jiffies;
855 priv->press = true;
856 } else if (time_after(jiffies,
857 priv->press_start +
858 msecs_to_jiffies(50))) {
859 priv->report_press = true;
860 }
861 } else {
862 priv->press = false;
863 }
864
865 hw->left = priv->report_press;
866
867 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
868 /*
869 * Clickpad's button is transmitted as middle button,
870 * however, since it is primary button, we will report
871 * it as BTN_LEFT.
872 */
873 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
874
875 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
876 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
877 if (hw->w == 2)
878 hw->scroll = (s8)buf[1];
879 }
880
881 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
882 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
883 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
884 }
885
886 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
887 ((buf[0] ^ buf[3]) & 0x02)) {
888 synaptics_parse_ext_buttons(buf, priv, hw);
889 }
890 } else {
891 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
892 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
893
894 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
895 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
896
897 hw->left = (buf[0] & 0x01) ? 1 : 0;
898 hw->right = (buf[0] & 0x02) ? 1 : 0;
899 }
900
901 /*
902 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
903 * is used by some firmware to indicate a finger at the edge of
904 * the touchpad whose precise position cannot be determined, so
905 * convert these values to the maximum axis value.
906 */
907 if (hw->x > X_MAX_POSITIVE)
908 hw->x -= 1 << ABS_POS_BITS;
909 else if (hw->x == X_MAX_POSITIVE)
910 hw->x = XMAX;
911
912 if (hw->y > Y_MAX_POSITIVE)
913 hw->y -= 1 << ABS_POS_BITS;
914 else if (hw->y == Y_MAX_POSITIVE)
915 hw->y = YMAX;
916
917 return 0;
918}
919
920static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
921 bool active, int x, int y)
922{
923 input_mt_slot(dev, slot);
924 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
925 if (active) {
926 input_report_abs(dev, ABS_MT_POSITION_X, x);
927 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
928 }
929}
930
931static void synaptics_report_semi_mt_data(struct input_dev *dev,
932 const struct synaptics_hw_state *a,
933 const struct synaptics_hw_state *b,
934 int num_fingers)
935{
936 if (num_fingers >= 2) {
937 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
938 min(a->y, b->y));
939 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
940 max(a->y, b->y));
941 } else if (num_fingers == 1) {
942 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
943 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
944 } else {
945 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
946 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
947 }
948}
949
950static void synaptics_report_ext_buttons(struct psmouse *psmouse,
951 const struct synaptics_hw_state *hw)
952{
953 struct input_dev *dev = psmouse->dev;
954 struct synaptics_data *priv = psmouse->private;
955 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
956 int i;
957
958 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
959 return;
960
961 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
962 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
963 SYN_ID_FULL(priv->info.identity) == 0x802) &&
964 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
965 return;
966
967 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
968 for (i = 0; i < ext_bits; i++) {
969 input_report_key(dev, BTN_0 + 2 * i,
970 hw->ext_buttons & BIT(i));
971 input_report_key(dev, BTN_1 + 2 * i,
972 hw->ext_buttons & BIT(i + ext_bits));
973 }
974 return;
975 }
976
977 /*
978 * This generation of touchpads has the trackstick buttons
979 * physically wired to the touchpad. Re-route them through
980 * the pass-through interface.
981 */
982 if (priv->pt_port) {
983 u8 pt_buttons;
984
985 /* The trackstick expects at most 3 buttons */
986 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
987 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
988 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
989
990 serio_interrupt(priv->pt_port,
991 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
992 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
993 }
994}
995
996static void synaptics_report_buttons(struct psmouse *psmouse,
997 const struct synaptics_hw_state *hw)
998{
999 struct input_dev *dev = psmouse->dev;
1000 struct synaptics_data *priv = psmouse->private;
1001
1002 input_report_key(dev, BTN_LEFT, hw->left);
1003 input_report_key(dev, BTN_RIGHT, hw->right);
1004
1005 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
1006 input_report_key(dev, BTN_MIDDLE, hw->middle);
1007
1008 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
1009 input_report_key(dev, BTN_FORWARD, hw->up);
1010 input_report_key(dev, BTN_BACK, hw->down);
1011 }
1012
1013 synaptics_report_ext_buttons(psmouse, hw);
1014}
1015
1016static void synaptics_report_mt_data(struct psmouse *psmouse,
1017 const struct synaptics_hw_state *sgm,
1018 int num_fingers)
1019{
1020 struct input_dev *dev = psmouse->dev;
1021 struct synaptics_data *priv = psmouse->private;
1022 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
1023 struct input_mt_pos pos[2];
1024 int slot[2], nsemi, i;
1025
1026 nsemi = clamp_val(num_fingers, 0, 2);
1027
1028 for (i = 0; i < nsemi; i++) {
1029 pos[i].x = hw[i]->x;
1030 pos[i].y = synaptics_invert_y(hw[i]->y);
1031 }
1032
1033 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
1034
1035 for (i = 0; i < nsemi; i++) {
1036 input_mt_slot(dev, slot[i]);
1037 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1038 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1039 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1040 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1041 }
1042
1043 input_mt_drop_unused(dev);
1044
1045 /* Don't use active slot count to generate BTN_TOOL events. */
1046 input_mt_report_pointer_emulation(dev, false);
1047
1048 /* Send the number of fingers reported by touchpad itself. */
1049 input_mt_report_finger_count(dev, num_fingers);
1050
1051 synaptics_report_buttons(psmouse, sgm);
1052
1053 input_sync(dev);
1054}
1055
1056static void synaptics_image_sensor_process(struct psmouse *psmouse,
1057 struct synaptics_hw_state *sgm)
1058{
1059 struct synaptics_data *priv = psmouse->private;
1060 int num_fingers;
1061
1062 /*
1063 * Update mt_state using the new finger count and current mt_state.
1064 */
1065 if (sgm->z == 0)
1066 num_fingers = 0;
1067 else if (sgm->w >= 4)
1068 num_fingers = 1;
1069 else if (sgm->w == 0)
1070 num_fingers = 2;
1071 else if (sgm->w == 1)
1072 num_fingers = priv->agm_count ? priv->agm_count : 3;
1073 else
1074 num_fingers = 4;
1075
1076 /* Send resulting input events to user space */
1077 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1078}
1079
1080static bool synaptics_has_multifinger(struct synaptics_data *priv)
1081{
1082 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1083 return true;
1084
1085 /* Advanced gesture mode also sends multi finger data */
1086 return synaptics_has_agm(priv);
1087}
1088
1089/*
1090 * called for each full received packet from the touchpad
1091 */
1092static void synaptics_process_packet(struct psmouse *psmouse)
1093{
1094 struct input_dev *dev = psmouse->dev;
1095 struct synaptics_data *priv = psmouse->private;
1096 struct synaptics_device_info *info = &priv->info;
1097 struct synaptics_hw_state hw;
1098 int num_fingers;
1099 int finger_width;
1100
1101 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1102 return;
1103
1104 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1105 synaptics_image_sensor_process(psmouse, &hw);
1106 return;
1107 }
1108
1109 if (hw.scroll) {
1110 priv->scroll += hw.scroll;
1111
1112 while (priv->scroll >= 4) {
1113 input_report_key(dev, BTN_BACK, !hw.down);
1114 input_sync(dev);
1115 input_report_key(dev, BTN_BACK, hw.down);
1116 input_sync(dev);
1117 priv->scroll -= 4;
1118 }
1119 while (priv->scroll <= -4) {
1120 input_report_key(dev, BTN_FORWARD, !hw.up);
1121 input_sync(dev);
1122 input_report_key(dev, BTN_FORWARD, hw.up);
1123 input_sync(dev);
1124 priv->scroll += 4;
1125 }
1126 return;
1127 }
1128
1129 if (hw.z > 0 && hw.x > 1) {
1130 num_fingers = 1;
1131 finger_width = 5;
1132 if (SYN_CAP_EXTENDED(info->capabilities)) {
1133 switch (hw.w) {
1134 case 0 ... 1:
1135 if (synaptics_has_multifinger(priv))
1136 num_fingers = hw.w + 2;
1137 break;
1138 case 2:
1139 /*
1140 * SYN_MODEL_PEN(info->model_id): even if
1141 * the device supports pen, we treat it as
1142 * a single finger.
1143 */
1144 break;
1145 case 4 ... 15:
1146 if (SYN_CAP_PALMDETECT(info->capabilities))
1147 finger_width = hw.w;
1148 break;
1149 }
1150 }
1151 } else {
1152 num_fingers = 0;
1153 finger_width = 0;
1154 }
1155
1156 if (cr48_profile_sensor) {
1157 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1158 return;
1159 }
1160
1161 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1162 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1163 num_fingers);
1164
1165 /* Post events
1166 * BTN_TOUCH has to be first as mousedev relies on it when doing
1167 * absolute -> relative conversion
1168 */
1169 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1170 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1171
1172 if (num_fingers > 0) {
1173 input_report_abs(dev, ABS_X, hw.x);
1174 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1175 }
1176 input_report_abs(dev, ABS_PRESSURE, hw.z);
1177
1178 if (SYN_CAP_PALMDETECT(info->capabilities))
1179 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1180
1181 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1182 if (synaptics_has_multifinger(priv)) {
1183 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1184 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1185 }
1186
1187 synaptics_report_buttons(psmouse, &hw);
1188
1189 input_sync(dev);
1190}
1191
1192static bool synaptics_validate_byte(struct psmouse *psmouse,
1193 int idx, enum synaptics_pkt_type pkt_type)
1194{
1195 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1196 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1197 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1198 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1199 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1200 const u8 *packet = psmouse->packet;
1201
1202 if (idx < 0 || idx > 4)
1203 return false;
1204
1205 switch (pkt_type) {
1206
1207 case SYN_NEWABS:
1208 case SYN_NEWABS_RELAXED:
1209 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1210
1211 case SYN_NEWABS_STRICT:
1212 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1213
1214 case SYN_OLDABS:
1215 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1216
1217 default:
1218 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1219 return false;
1220 }
1221}
1222
1223static enum synaptics_pkt_type
1224synaptics_detect_pkt_type(struct psmouse *psmouse)
1225{
1226 int i;
1227
1228 for (i = 0; i < 5; i++) {
1229 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1230 psmouse_info(psmouse, "using relaxed packet validation\n");
1231 return SYN_NEWABS_RELAXED;
1232 }
1233 }
1234
1235 return SYN_NEWABS_STRICT;
1236}
1237
1238static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1239{
1240 struct synaptics_data *priv = psmouse->private;
1241
1242 if (psmouse->pktcnt >= 6) { /* Full packet received */
1243 if (unlikely(priv->pkt_type == SYN_NEWABS))
1244 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1245
1246 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1247 synaptics_is_pt_packet(psmouse->packet)) {
1248 synaptics_pass_pt_packet(priv, psmouse->packet);
1249 } else {
1250 synaptics_process_packet(psmouse);
1251 }
1252
1253 return PSMOUSE_FULL_PACKET;
1254 }
1255
1256 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1257 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1258}
1259
1260/*****************************************************************************
1261 * Driver initialization/cleanup functions
1262 ****************************************************************************/
1263static void set_abs_position_params(struct input_dev *dev,
1264 struct synaptics_device_info *info,
1265 int x_code, int y_code)
1266{
1267 int x_min = info->x_min ?: XMIN_NOMINAL;
1268 int x_max = info->x_max ?: XMAX_NOMINAL;
1269 int y_min = info->y_min ?: YMIN_NOMINAL;
1270 int y_max = info->y_max ?: YMAX_NOMINAL;
1271 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1272 SYN_REDUCED_FILTER_FUZZ : 0;
1273
1274 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1275 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1276 input_abs_set_res(dev, x_code, info->x_res);
1277 input_abs_set_res(dev, y_code, info->y_res);
1278}
1279
1280static int set_input_params(struct psmouse *psmouse,
1281 struct synaptics_data *priv)
1282{
1283 struct input_dev *dev = psmouse->dev;
1284 struct synaptics_device_info *info = &priv->info;
1285 int i;
1286 int error;
1287
1288 /* Reset default psmouse capabilities */
1289 __clear_bit(EV_REL, dev->evbit);
1290 bitmap_zero(dev->relbit, REL_CNT);
1291 bitmap_zero(dev->keybit, KEY_CNT);
1292
1293 /* Things that apply to both modes */
1294 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1295
1296 input_set_capability(dev, EV_KEY, BTN_LEFT);
1297
1298 /* Clickpads report only left button */
1299 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1300 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1301 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1302 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1303 }
1304
1305 if (!priv->absolute_mode) {
1306 /* Relative mode */
1307 input_set_capability(dev, EV_REL, REL_X);
1308 input_set_capability(dev, EV_REL, REL_Y);
1309 return 0;
1310 }
1311
1312 /* Absolute mode */
1313 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1314 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1315
1316 if (cr48_profile_sensor)
1317 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1318
1319 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1320 set_abs_position_params(dev, info,
1321 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1322 /* Image sensors can report per-contact pressure */
1323 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1324
1325 error = input_mt_init_slots(dev, 2,
1326 INPUT_MT_POINTER | INPUT_MT_TRACK);
1327 if (error)
1328 return error;
1329
1330 /* Image sensors can signal 4 and 5 finger clicks */
1331 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1332 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1333 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1334 set_abs_position_params(dev, info,
1335 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1336 /*
1337 * Profile sensor in CR-48 tracks contacts reasonably well,
1338 * other non-image sensors with AGM use semi-mt.
1339 */
1340 error = input_mt_init_slots(dev, 2,
1341 INPUT_MT_POINTER |
1342 (cr48_profile_sensor ?
1343 INPUT_MT_TRACK :
1344 INPUT_MT_SEMI_MT));
1345 if (error)
1346 return error;
1347
1348 /*
1349 * For semi-mt devices we send ABS_X/Y ourselves instead of
1350 * input_mt_report_pointer_emulation. But
1351 * input_mt_init_slots() resets the fuzz to 0, leading to a
1352 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1353 * position. Let's re-initialize ABS_X/Y here.
1354 */
1355 if (!cr48_profile_sensor)
1356 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1357 }
1358
1359 if (SYN_CAP_PALMDETECT(info->capabilities))
1360 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1361
1362 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1363 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1364
1365 if (synaptics_has_multifinger(priv)) {
1366 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1367 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1368 }
1369
1370 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1371 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1372 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1373 input_set_capability(dev, EV_KEY, BTN_BACK);
1374 }
1375
1376 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1377 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1378 input_set_capability(dev, EV_KEY, BTN_0 + i);
1379
1380 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1381 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1382 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1383 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1384 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1385 }
1386
1387 return 0;
1388}
1389
1390static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1391 void *data, char *buf)
1392{
1393 struct synaptics_data *priv = psmouse->private;
1394
1395 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1396}
1397
1398static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1399 void *data, const char *buf,
1400 size_t len)
1401{
1402 struct synaptics_data *priv = psmouse->private;
1403 unsigned int value;
1404 int err;
1405
1406 err = kstrtouint(buf, 10, &value);
1407 if (err)
1408 return err;
1409
1410 if (value > 1)
1411 return -EINVAL;
1412
1413 if (value == priv->disable_gesture)
1414 return len;
1415
1416 priv->disable_gesture = value;
1417 if (value)
1418 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1419 else
1420 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1421
1422 if (synaptics_mode_cmd(psmouse, priv->mode))
1423 return -EIO;
1424
1425 return len;
1426}
1427
1428PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1429 synaptics_show_disable_gesture,
1430 synaptics_set_disable_gesture);
1431
1432static void synaptics_disconnect(struct psmouse *psmouse)
1433{
1434 struct synaptics_data *priv = psmouse->private;
1435
1436 /*
1437 * We might have left a breadcrumb when trying to
1438 * set up SMbus companion.
1439 */
1440 psmouse_smbus_cleanup(psmouse);
1441
1442 if (!priv->absolute_mode &&
1443 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1444 device_remove_file(&psmouse->ps2dev.serio->dev,
1445 &psmouse_attr_disable_gesture.dattr);
1446
1447 synaptics_reset(psmouse);
1448 kfree(priv);
1449 psmouse->private = NULL;
1450}
1451
1452static int synaptics_reconnect(struct psmouse *psmouse)
1453{
1454 struct synaptics_data *priv = psmouse->private;
1455 struct synaptics_device_info info;
1456 u8 param[2];
1457 int retry = 0;
1458 int error;
1459
1460 do {
1461 psmouse_reset(psmouse);
1462 if (retry) {
1463 /*
1464 * On some boxes, right after resuming, the touchpad
1465 * needs some time to finish initializing (I assume
1466 * it needs time to calibrate) and start responding
1467 * to Synaptics-specific queries, so let's wait a
1468 * bit.
1469 */
1470 ssleep(1);
1471 }
1472 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1473 error = synaptics_detect(psmouse, 0);
1474 } while (error && ++retry < 3);
1475
1476 if (error)
1477 return error;
1478
1479 if (retry > 1)
1480 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1481
1482 error = synaptics_query_hardware(psmouse, &info);
1483 if (error) {
1484 psmouse_err(psmouse, "Unable to query device.\n");
1485 return error;
1486 }
1487
1488 error = synaptics_set_mode(psmouse);
1489 if (error) {
1490 psmouse_err(psmouse, "Unable to initialize device.\n");
1491 return error;
1492 }
1493
1494 if (info.identity != priv->info.identity ||
1495 info.model_id != priv->info.model_id ||
1496 info.capabilities != priv->info.capabilities ||
1497 info.ext_cap != priv->info.ext_cap) {
1498 psmouse_err(psmouse,
1499 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1500 priv->info.identity, info.identity,
1501 priv->info.model_id, info.model_id,
1502 priv->info.capabilities, info.capabilities,
1503 priv->info.ext_cap, info.ext_cap);
1504 return -ENXIO;
1505 }
1506
1507 return 0;
1508}
1509
1510static bool impaired_toshiba_kbc;
1511
1512static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1513#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1514 {
1515 /* Toshiba Satellite */
1516 .matches = {
1517 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1518 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1519 },
1520 },
1521 {
1522 /* Toshiba Dynabook */
1523 .matches = {
1524 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1525 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1526 },
1527 },
1528 {
1529 /* Toshiba Portege M300 */
1530 .matches = {
1531 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1532 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1533 },
1534
1535 },
1536 {
1537 /* Toshiba Portege M300 */
1538 .matches = {
1539 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1540 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1541 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1542 },
1543
1544 },
1545#endif
1546 { }
1547};
1548
1549static bool broken_olpc_ec;
1550
1551static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1552#if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1553 {
1554 /* OLPC XO-1 or XO-1.5 */
1555 .matches = {
1556 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1557 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1558 },
1559 },
1560#endif
1561 { }
1562};
1563
1564static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1565#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1566 {
1567 /* Cr-48 Chromebook (Codename Mario) */
1568 .matches = {
1569 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1570 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1571 },
1572 },
1573#endif
1574 { }
1575};
1576
1577void __init synaptics_module_init(void)
1578{
1579 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1580 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1581 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1582}
1583
1584static int synaptics_init_ps2(struct psmouse *psmouse,
1585 struct synaptics_device_info *info,
1586 bool absolute_mode)
1587{
1588 struct synaptics_data *priv;
1589 int err;
1590
1591 synaptics_apply_quirks(psmouse, info);
1592
1593 psmouse->private = priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1594 if (!priv)
1595 return -ENOMEM;
1596
1597 priv->info = *info;
1598 priv->absolute_mode = absolute_mode;
1599 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1600 priv->disable_gesture = true;
1601
1602 /*
1603 * Unfortunately ForcePad capability is not exported over PS/2,
1604 * so we have to resort to checking PNP IDs.
1605 */
1606 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1607
1608 err = synaptics_set_mode(psmouse);
1609 if (err) {
1610 psmouse_err(psmouse, "Unable to initialize device.\n");
1611 goto init_fail;
1612 }
1613
1614 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1615 SYN_NEWABS : SYN_OLDABS;
1616
1617 psmouse_info(psmouse,
1618 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1619 SYN_ID_MODEL(info->identity),
1620 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1621 info->model_id,
1622 info->capabilities, info->ext_cap, info->ext_cap_0c,
1623 info->ext_cap_10, info->board_id, info->firmware_id);
1624
1625 err = set_input_params(psmouse, priv);
1626 if (err) {
1627 psmouse_err(psmouse,
1628 "failed to set up capabilities: %d\n", err);
1629 goto init_fail;
1630 }
1631
1632 /*
1633 * Encode touchpad model so that it can be used to set
1634 * input device->id.version and be visible to userspace.
1635 * Because version is __u16 we have to drop something.
1636 * Hardware info bits seem to be good candidates as they
1637 * are documented to be for Synaptics corp. internal use.
1638 */
1639 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1640 (info->model_id & 0x000000ff);
1641
1642 if (absolute_mode) {
1643 psmouse->protocol_handler = synaptics_process_byte;
1644 psmouse->pktsize = 6;
1645 } else {
1646 /* Relative mode follows standard PS/2 mouse protocol */
1647 psmouse->protocol_handler = psmouse_process_byte;
1648 psmouse->pktsize = 3;
1649 }
1650
1651 psmouse->set_rate = synaptics_set_rate;
1652 psmouse->disconnect = synaptics_disconnect;
1653 psmouse->reconnect = synaptics_reconnect;
1654 psmouse->fast_reconnect = NULL;
1655 psmouse->cleanup = synaptics_reset;
1656 /* Synaptics can usually stay in sync without extra help */
1657 psmouse->resync_time = 0;
1658
1659 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1660 synaptics_pt_create(psmouse);
1661
1662 /*
1663 * Toshiba's KBC seems to have trouble handling data from
1664 * Synaptics at full rate. Switch to a lower rate (roughly
1665 * the same rate as a standard PS/2 mouse).
1666 */
1667 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1668 psmouse_info(psmouse,
1669 "Toshiba %s detected, limiting rate to 40pps.\n",
1670 dmi_get_system_info(DMI_PRODUCT_NAME));
1671 psmouse->rate = 40;
1672 }
1673
1674 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1675 err = device_create_file(&psmouse->ps2dev.serio->dev,
1676 &psmouse_attr_disable_gesture.dattr);
1677 if (err) {
1678 psmouse_err(psmouse,
1679 "Failed to create disable_gesture attribute (%d)",
1680 err);
1681 goto init_fail;
1682 }
1683 }
1684
1685 return 0;
1686
1687 init_fail:
1688 kfree(priv);
1689 return err;
1690}
1691
1692static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1693{
1694 struct synaptics_device_info info;
1695 int error;
1696
1697 psmouse_reset(psmouse);
1698
1699 error = synaptics_query_hardware(psmouse, &info);
1700 if (error) {
1701 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1702 return error;
1703 }
1704
1705 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1706}
1707
1708int synaptics_init_absolute(struct psmouse *psmouse)
1709{
1710 return __synaptics_init(psmouse, true);
1711}
1712
1713int synaptics_init_relative(struct psmouse *psmouse)
1714{
1715 return __synaptics_init(psmouse, false);
1716}
1717
1718static int synaptics_setup_ps2(struct psmouse *psmouse,
1719 struct synaptics_device_info *info)
1720{
1721 bool absolute_mode = true;
1722 int error;
1723
1724 /*
1725 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1726 * packet spew overloads the EC such that key presses on the keyboard
1727 * are missed. Given that, don't even attempt to use Absolute mode.
1728 * Relative mode seems to work just fine.
1729 */
1730 if (broken_olpc_ec) {
1731 psmouse_info(psmouse,
1732 "OLPC XO detected, forcing relative protocol.\n");
1733 absolute_mode = false;
1734 }
1735
1736 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1737 if (error)
1738 return error;
1739
1740 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1741}
1742
1743#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1744
1745void __init synaptics_module_init(void)
1746{
1747}
1748
1749static int __maybe_unused
1750synaptics_setup_ps2(struct psmouse *psmouse,
1751 struct synaptics_device_info *info)
1752{
1753 return -ENOSYS;
1754}
1755
1756#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1757
1758#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1759
1760/*
1761 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1762 * provides a better bandwidth and allow a better control of the touchpads.
1763 * This is used to decide if we need to use this bus or not.
1764 */
1765enum {
1766 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1767 SYNAPTICS_INTERTOUCH_OFF,
1768 SYNAPTICS_INTERTOUCH_ON,
1769};
1770
1771static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1772 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1773module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1774MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1775
1776static int synaptics_create_intertouch(struct psmouse *psmouse,
1777 struct synaptics_device_info *info,
1778 bool leave_breadcrumbs)
1779{
1780 bool topbuttonpad =
1781 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1782 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1783 const struct rmi_device_platform_data pdata = {
1784 .reset_delay_ms = 30,
1785 .sensor_pdata = {
1786 .sensor_type = rmi_sensor_touchpad,
1787 .axis_align.flip_y = true,
1788 .kernel_tracking = false,
1789 .topbuttonpad = topbuttonpad,
1790 },
1791 .gpio_data = {
1792 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1793 .trackstick_buttons =
1794 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1795 },
1796 };
1797 const struct i2c_board_info intertouch_board = {
1798 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1799 .flags = I2C_CLIENT_HOST_NOTIFY,
1800 };
1801
1802 return psmouse_smbus_init(psmouse, &intertouch_board,
1803 &pdata, sizeof(pdata), true,
1804 leave_breadcrumbs);
1805}
1806
1807/*
1808 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1809 * and decides to instantiate a SMBus InterTouch device.
1810 */
1811static int synaptics_setup_intertouch(struct psmouse *psmouse,
1812 struct synaptics_device_info *info,
1813 bool leave_breadcrumbs)
1814{
1815 int error;
1816
1817 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1818 return -ENXIO;
1819
1820 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1821 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1822 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1823
1824 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1825 psmouse_info(psmouse,
1826 "Your touchpad (%s) says it can support a different bus. "
1827 "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",
1828 psmouse->ps2dev.serio->firmware_id);
1829
1830 return -ENXIO;
1831 }
1832 }
1833
1834 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1835
1836 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1837 if (error) {
1838 if (error == -EAGAIN)
1839 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1840 else
1841 psmouse_err(psmouse, "unable to create intertouch device\n");
1842
1843 return error;
1844 }
1845
1846 return 0;
1847}
1848
1849int synaptics_init_smbus(struct psmouse *psmouse)
1850{
1851 struct synaptics_device_info info;
1852 int error;
1853
1854 psmouse_reset(psmouse);
1855
1856 error = synaptics_query_hardware(psmouse, &info);
1857 if (error) {
1858 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1859 return error;
1860 }
1861
1862 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1863 return -ENXIO;
1864
1865 return synaptics_create_intertouch(psmouse, &info, false);
1866}
1867
1868#else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1869
1870static int __maybe_unused
1871synaptics_setup_intertouch(struct psmouse *psmouse,
1872 struct synaptics_device_info *info,
1873 bool leave_breadcrumbs)
1874{
1875 return -ENOSYS;
1876}
1877
1878int synaptics_init_smbus(struct psmouse *psmouse)
1879{
1880 return -ENOSYS;
1881}
1882
1883#endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1884
1885#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1886 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1887
1888int synaptics_init(struct psmouse *psmouse)
1889{
1890 struct synaptics_device_info info;
1891 int error;
1892 int retval;
1893
1894 psmouse_reset(psmouse);
1895
1896 error = synaptics_query_hardware(psmouse, &info);
1897 if (error) {
1898 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1899 return error;
1900 }
1901
1902 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1903 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1904 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1905 /* Forcepads need F21, which is not ready */
1906 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1907 psmouse_warn(psmouse,
1908 "The touchpad can support a better bus than the too old PS/2 protocol. "
1909 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1910 }
1911
1912 error = synaptics_setup_intertouch(psmouse, &info, true);
1913 if (!error)
1914 return PSMOUSE_SYNAPTICS_SMBUS;
1915 }
1916
1917 retval = synaptics_setup_ps2(psmouse, &info);
1918 if (retval < 0) {
1919 /*
1920 * Not using any flavor of Synaptics support, so clean up
1921 * SMbus breadcrumbs, if any.
1922 */
1923 psmouse_smbus_cleanup(psmouse);
1924 }
1925
1926 return retval;
1927}
1928
1929#else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1930
1931int synaptics_init(struct psmouse *psmouse)
1932{
1933 return -ENOSYS;
1934}
1935
1936#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */