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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 1st */
183 "LEN009b", /* T580 */
184 "LEN200f", /* T450s */
185 "LEN2044", /* L470 */
186 "LEN2054", /* E480 */
187 "LEN2055", /* E580 */
188 "SYN3052", /* HP EliteBook 840 G4 */
189 "SYN3221", /* HP 15-ay000 */
190 "SYN323d", /* HP Spectre X360 13-w013dx */
191 "SYN3257", /* HP Envy 13-ad105ng */
192 NULL
193};
194
195static const char * const forcepad_pnp_ids[] = {
196 "SYN300D",
197 "SYN3014",
198 NULL
199};
200
201/*
202 * Send a command to the synaptics touchpad by special commands
203 */
204static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
205{
206 int error;
207
208 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
209 if (error)
210 return error;
211
212 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
213 if (error)
214 return error;
215
216 return 0;
217}
218
219static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
220{
221 int error;
222 union {
223 __be32 be_val;
224 char buf[4];
225 } resp = { 0 };
226
227 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
228 if (error)
229 return error;
230
231 *val = be32_to_cpu(resp.be_val);
232 return 0;
233}
234
235/*
236 * Identify Touchpad
237 * See also the SYN_ID_* macros
238 */
239static int synaptics_identify(struct psmouse *psmouse,
240 struct synaptics_device_info *info)
241{
242 int error;
243
244 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
245 if (error)
246 return error;
247
248 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
249}
250
251/*
252 * Read the model-id bytes from the touchpad
253 * see also SYN_MODEL_* macros
254 */
255static int synaptics_model_id(struct psmouse *psmouse,
256 struct synaptics_device_info *info)
257{
258 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
259}
260
261/*
262 * Read the firmware id from the touchpad
263 */
264static int synaptics_firmware_id(struct psmouse *psmouse,
265 struct synaptics_device_info *info)
266{
267 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
268 &info->firmware_id);
269}
270
271/*
272 * Read the board id and the "More Extended Queries" from the touchpad
273 * The board id is encoded in the "QUERY MODES" response
274 */
275static int synaptics_query_modes(struct psmouse *psmouse,
276 struct synaptics_device_info *info)
277{
278 u8 bid[3];
279 int error;
280
281 /* firmwares prior 7.5 have no board_id encoded */
282 if (SYN_ID_FULL(info->identity) < 0x705)
283 return 0;
284
285 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
286 if (error)
287 return error;
288
289 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
290
291 if (SYN_MEXT_CAP_BIT(bid[0]))
292 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
293 &info->ext_cap_10);
294
295 return 0;
296}
297
298/*
299 * Read the capability-bits from the touchpad
300 * see also the SYN_CAP_* macros
301 */
302static int synaptics_capability(struct psmouse *psmouse,
303 struct synaptics_device_info *info)
304{
305 int error;
306
307 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
308 &info->capabilities);
309 if (error)
310 return error;
311
312 info->ext_cap = info->ext_cap_0c = 0;
313
314 /*
315 * Older firmwares had submodel ID fixed to 0x47
316 */
317 if (SYN_ID_FULL(info->identity) < 0x705 &&
318 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
319 return -ENXIO;
320 }
321
322 /*
323 * Unless capExtended is set the rest of the flags should be ignored
324 */
325 if (!SYN_CAP_EXTENDED(info->capabilities))
326 info->capabilities = 0;
327
328 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
329 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
330 &info->ext_cap);
331 if (error) {
332 psmouse_warn(psmouse,
333 "device claims to have extended capabilities, but I'm not able to read them.\n");
334 } else {
335 /*
336 * if nExtBtn is greater than 8 it should be considered
337 * invalid and treated as 0
338 */
339 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
340 info->ext_cap &= ~SYN_CAP_MB_MASK;
341 }
342 }
343
344 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
345 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
346 &info->ext_cap_0c);
347 if (error)
348 psmouse_warn(psmouse,
349 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
350 }
351
352 return 0;
353}
354
355/*
356 * Read touchpad resolution and maximum reported coordinates
357 * Resolution is left zero if touchpad does not support the query
358 */
359static int synaptics_resolution(struct psmouse *psmouse,
360 struct synaptics_device_info *info)
361{
362 u8 resp[3];
363 int error;
364
365 if (SYN_ID_MAJOR(info->identity) < 4)
366 return 0;
367
368 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
369 if (!error) {
370 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
371 info->x_res = resp[0]; /* x resolution in units/mm */
372 info->y_res = resp[2]; /* y resolution in units/mm */
373 }
374 }
375
376 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
377 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
378 error = synaptics_send_cmd(psmouse,
379 SYN_QUE_EXT_MAX_COORDS, resp);
380 if (error) {
381 psmouse_warn(psmouse,
382 "device claims to have max coordinates query, but I'm not able to read it.\n");
383 } else {
384 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
385 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
386 psmouse_info(psmouse,
387 "queried max coordinates: x [..%d], y [..%d]\n",
388 info->x_max, info->y_max);
389 }
390 }
391
392 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
393 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
394 /*
395 * Firmware v8.1 does not report proper number of extended
396 * capabilities, but has been proven to report correct min
397 * coordinates.
398 */
399 SYN_ID_FULL(info->identity) == 0x801)) {
400 error = synaptics_send_cmd(psmouse,
401 SYN_QUE_EXT_MIN_COORDS, resp);
402 if (error) {
403 psmouse_warn(psmouse,
404 "device claims to have min coordinates query, but I'm not able to read it.\n");
405 } else {
406 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
407 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
408 psmouse_info(psmouse,
409 "queried min coordinates: x [%d..], y [%d..]\n",
410 info->x_min, info->y_min);
411 }
412 }
413
414 return 0;
415}
416
417static int synaptics_query_hardware(struct psmouse *psmouse,
418 struct synaptics_device_info *info)
419{
420 int error;
421
422 memset(info, 0, sizeof(*info));
423
424 error = synaptics_identify(psmouse, info);
425 if (error)
426 return error;
427
428 error = synaptics_model_id(psmouse, info);
429 if (error)
430 return error;
431
432 error = synaptics_firmware_id(psmouse, info);
433 if (error)
434 return error;
435
436 error = synaptics_query_modes(psmouse, info);
437 if (error)
438 return error;
439
440 error = synaptics_capability(psmouse, info);
441 if (error)
442 return error;
443
444 error = synaptics_resolution(psmouse, info);
445 if (error)
446 return error;
447
448 return 0;
449}
450
451#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
452
453#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
454
455static bool cr48_profile_sensor;
456
457#define ANY_BOARD_ID 0
458struct min_max_quirk {
459 const char * const *pnp_ids;
460 struct {
461 u32 min, max;
462 } board_id;
463 u32 x_min, x_max, y_min, y_max;
464};
465
466static const struct min_max_quirk min_max_pnpid_table[] = {
467 {
468 (const char * const []){"LEN0033", NULL},
469 {ANY_BOARD_ID, ANY_BOARD_ID},
470 1024, 5052, 2258, 4832
471 },
472 {
473 (const char * const []){"LEN0042", NULL},
474 {ANY_BOARD_ID, ANY_BOARD_ID},
475 1232, 5710, 1156, 4696
476 },
477 {
478 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
479 "LEN0039", "LEN2002", "LEN2004",
480 NULL},
481 {ANY_BOARD_ID, 2961},
482 1024, 5112, 2024, 4832
483 },
484 {
485 (const char * const []){"LEN2000", NULL},
486 {ANY_BOARD_ID, ANY_BOARD_ID},
487 1024, 5113, 2021, 4832
488 },
489 {
490 (const char * const []){"LEN2001", NULL},
491 {ANY_BOARD_ID, ANY_BOARD_ID},
492 1024, 5022, 2508, 4832
493 },
494 {
495 (const char * const []){"LEN2006", NULL},
496 {2691, 2691},
497 1024, 5045, 2457, 4832
498 },
499 {
500 (const char * const []){"LEN2006", NULL},
501 {ANY_BOARD_ID, ANY_BOARD_ID},
502 1264, 5675, 1171, 4688
503 },
504 { }
505};
506
507/*****************************************************************************
508 * Synaptics communications functions
509 ****************************************************************************/
510
511/*
512 * Synaptics touchpads report the y coordinate from bottom to top, which is
513 * opposite from what userspace expects.
514 * This function is used to invert y before reporting.
515 */
516static int synaptics_invert_y(int y)
517{
518 return YMAX_NOMINAL + YMIN_NOMINAL - y;
519}
520
521/*
522 * Apply quirk(s) if the hardware matches
523 */
524static void synaptics_apply_quirks(struct psmouse *psmouse,
525 struct synaptics_device_info *info)
526{
527 int i;
528
529 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
530 if (!psmouse_matches_pnp_id(psmouse,
531 min_max_pnpid_table[i].pnp_ids))
532 continue;
533
534 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
535 info->board_id < min_max_pnpid_table[i].board_id.min)
536 continue;
537
538 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
539 info->board_id > min_max_pnpid_table[i].board_id.max)
540 continue;
541
542 info->x_min = min_max_pnpid_table[i].x_min;
543 info->x_max = min_max_pnpid_table[i].x_max;
544 info->y_min = min_max_pnpid_table[i].y_min;
545 info->y_max = min_max_pnpid_table[i].y_max;
546 psmouse_info(psmouse,
547 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
548 info->x_min, info->x_max,
549 info->y_min, info->y_max);
550 break;
551 }
552}
553
554static bool synaptics_has_agm(struct synaptics_data *priv)
555{
556 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
557 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
558}
559
560static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
561{
562 static u8 param = 0xc8;
563 int error;
564
565 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
566 if (error)
567 return error;
568
569 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
570 if (error)
571 return error;
572
573 return 0;
574}
575
576static int synaptics_set_mode(struct psmouse *psmouse)
577{
578 struct synaptics_data *priv = psmouse->private;
579 int error;
580
581 priv->mode = 0;
582 if (priv->absolute_mode)
583 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
584 if (priv->disable_gesture)
585 priv->mode |= SYN_BIT_DISABLE_GESTURE;
586 if (psmouse->rate >= 80)
587 priv->mode |= SYN_BIT_HIGH_RATE;
588 if (SYN_CAP_EXTENDED(priv->info.capabilities))
589 priv->mode |= SYN_BIT_W_MODE;
590
591 error = synaptics_mode_cmd(psmouse, priv->mode);
592 if (error)
593 return error;
594
595 if (priv->absolute_mode && synaptics_has_agm(priv)) {
596 error = synaptics_set_advanced_gesture_mode(psmouse);
597 if (error) {
598 psmouse_err(psmouse,
599 "Advanced gesture mode init failed: %d\n",
600 error);
601 return error;
602 }
603 }
604
605 return 0;
606}
607
608static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
609{
610 struct synaptics_data *priv = psmouse->private;
611
612 if (rate >= 80) {
613 priv->mode |= SYN_BIT_HIGH_RATE;
614 psmouse->rate = 80;
615 } else {
616 priv->mode &= ~SYN_BIT_HIGH_RATE;
617 psmouse->rate = 40;
618 }
619
620 synaptics_mode_cmd(psmouse, priv->mode);
621}
622
623/*****************************************************************************
624 * Synaptics pass-through PS/2 port support
625 ****************************************************************************/
626static int synaptics_pt_write(struct serio *serio, u8 c)
627{
628 struct psmouse *parent = serio_get_drvdata(serio->parent);
629 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
630 int error;
631
632 error = ps2_sliced_command(&parent->ps2dev, c);
633 if (error)
634 return error;
635
636 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
637 if (error)
638 return error;
639
640 return 0;
641}
642
643static int synaptics_pt_start(struct serio *serio)
644{
645 struct psmouse *parent = serio_get_drvdata(serio->parent);
646 struct synaptics_data *priv = parent->private;
647
648 serio_pause_rx(parent->ps2dev.serio);
649 priv->pt_port = serio;
650 serio_continue_rx(parent->ps2dev.serio);
651
652 return 0;
653}
654
655static void synaptics_pt_stop(struct serio *serio)
656{
657 struct psmouse *parent = serio_get_drvdata(serio->parent);
658 struct synaptics_data *priv = parent->private;
659
660 serio_pause_rx(parent->ps2dev.serio);
661 priv->pt_port = NULL;
662 serio_continue_rx(parent->ps2dev.serio);
663}
664
665static int synaptics_is_pt_packet(u8 *buf)
666{
667 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
668}
669
670static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
671{
672 struct psmouse *child = serio_get_drvdata(ptport);
673
674 if (child && child->state == PSMOUSE_ACTIVATED) {
675 serio_interrupt(ptport, packet[1], 0);
676 serio_interrupt(ptport, packet[4], 0);
677 serio_interrupt(ptport, packet[5], 0);
678 if (child->pktsize == 4)
679 serio_interrupt(ptport, packet[2], 0);
680 } else {
681 serio_interrupt(ptport, packet[1], 0);
682 }
683}
684
685static void synaptics_pt_activate(struct psmouse *psmouse)
686{
687 struct synaptics_data *priv = psmouse->private;
688 struct psmouse *child = serio_get_drvdata(priv->pt_port);
689
690 /* adjust the touchpad to child's choice of protocol */
691 if (child) {
692 if (child->pktsize == 4)
693 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
694 else
695 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
696
697 if (synaptics_mode_cmd(psmouse, priv->mode))
698 psmouse_warn(psmouse,
699 "failed to switch guest protocol\n");
700 }
701}
702
703static void synaptics_pt_create(struct psmouse *psmouse)
704{
705 struct serio *serio;
706
707 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
708 if (!serio) {
709 psmouse_err(psmouse,
710 "not enough memory for pass-through port\n");
711 return;
712 }
713
714 serio->id.type = SERIO_PS_PSTHRU;
715 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
716 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
717 serio->write = synaptics_pt_write;
718 serio->start = synaptics_pt_start;
719 serio->stop = synaptics_pt_stop;
720 serio->parent = psmouse->ps2dev.serio;
721
722 psmouse->pt_activate = synaptics_pt_activate;
723
724 psmouse_info(psmouse, "serio: %s port at %s\n",
725 serio->name, psmouse->phys);
726 serio_register_port(serio);
727}
728
729/*****************************************************************************
730 * Functions to interpret the absolute mode packets
731 ****************************************************************************/
732
733static void synaptics_parse_agm(const u8 buf[],
734 struct synaptics_data *priv,
735 struct synaptics_hw_state *hw)
736{
737 struct synaptics_hw_state *agm = &priv->agm;
738 int agm_packet_type;
739
740 agm_packet_type = (buf[5] & 0x30) >> 4;
741 switch (agm_packet_type) {
742 case 1:
743 /* Gesture packet: (x, y, z) half resolution */
744 agm->w = hw->w;
745 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
746 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
747 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
748 break;
749
750 case 2:
751 /* AGM-CONTACT packet: we are only interested in the count */
752 priv->agm_count = buf[1];
753 break;
754
755 default:
756 break;
757 }
758}
759
760static void synaptics_parse_ext_buttons(const u8 buf[],
761 struct synaptics_data *priv,
762 struct synaptics_hw_state *hw)
763{
764 unsigned int ext_bits =
765 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
766 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
767
768 hw->ext_buttons = buf[4] & ext_mask;
769 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
770}
771
772static int synaptics_parse_hw_state(const u8 buf[],
773 struct synaptics_data *priv,
774 struct synaptics_hw_state *hw)
775{
776 memset(hw, 0, sizeof(struct synaptics_hw_state));
777
778 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
779 hw->w = (((buf[0] & 0x30) >> 2) |
780 ((buf[0] & 0x04) >> 1) |
781 ((buf[3] & 0x04) >> 2));
782
783 if (synaptics_has_agm(priv) && hw->w == 2) {
784 synaptics_parse_agm(buf, priv, hw);
785 return 1;
786 }
787
788 hw->x = (((buf[3] & 0x10) << 8) |
789 ((buf[1] & 0x0f) << 8) |
790 buf[4]);
791 hw->y = (((buf[3] & 0x20) << 7) |
792 ((buf[1] & 0xf0) << 4) |
793 buf[5]);
794 hw->z = buf[2];
795
796 hw->left = (buf[0] & 0x01) ? 1 : 0;
797 hw->right = (buf[0] & 0x02) ? 1 : 0;
798
799 if (priv->is_forcepad) {
800 /*
801 * ForcePads, like Clickpads, use middle button
802 * bits to report primary button clicks.
803 * Unfortunately they report primary button not
804 * only when user presses on the pad above certain
805 * threshold, but also when there are more than one
806 * finger on the touchpad, which interferes with
807 * out multi-finger gestures.
808 */
809 if (hw->z == 0) {
810 /* No contacts */
811 priv->press = priv->report_press = false;
812 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
813 /*
814 * Single-finger touch with pressure above
815 * the threshold. If pressure stays long
816 * enough, we'll start reporting primary
817 * button. We rely on the device continuing
818 * sending data even if finger does not
819 * move.
820 */
821 if (!priv->press) {
822 priv->press_start = jiffies;
823 priv->press = true;
824 } else if (time_after(jiffies,
825 priv->press_start +
826 msecs_to_jiffies(50))) {
827 priv->report_press = true;
828 }
829 } else {
830 priv->press = false;
831 }
832
833 hw->left = priv->report_press;
834
835 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
836 /*
837 * Clickpad's button is transmitted as middle button,
838 * however, since it is primary button, we will report
839 * it as BTN_LEFT.
840 */
841 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
842
843 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
844 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
845 if (hw->w == 2)
846 hw->scroll = (s8)buf[1];
847 }
848
849 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
850 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
851 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
852 }
853
854 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
855 ((buf[0] ^ buf[3]) & 0x02)) {
856 synaptics_parse_ext_buttons(buf, priv, hw);
857 }
858 } else {
859 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
860 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
861
862 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
863 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
864
865 hw->left = (buf[0] & 0x01) ? 1 : 0;
866 hw->right = (buf[0] & 0x02) ? 1 : 0;
867 }
868
869 /*
870 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
871 * is used by some firmware to indicate a finger at the edge of
872 * the touchpad whose precise position cannot be determined, so
873 * convert these values to the maximum axis value.
874 */
875 if (hw->x > X_MAX_POSITIVE)
876 hw->x -= 1 << ABS_POS_BITS;
877 else if (hw->x == X_MAX_POSITIVE)
878 hw->x = XMAX;
879
880 if (hw->y > Y_MAX_POSITIVE)
881 hw->y -= 1 << ABS_POS_BITS;
882 else if (hw->y == Y_MAX_POSITIVE)
883 hw->y = YMAX;
884
885 return 0;
886}
887
888static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
889 bool active, int x, int y)
890{
891 input_mt_slot(dev, slot);
892 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
893 if (active) {
894 input_report_abs(dev, ABS_MT_POSITION_X, x);
895 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
896 }
897}
898
899static void synaptics_report_semi_mt_data(struct input_dev *dev,
900 const struct synaptics_hw_state *a,
901 const struct synaptics_hw_state *b,
902 int num_fingers)
903{
904 if (num_fingers >= 2) {
905 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
906 min(a->y, b->y));
907 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
908 max(a->y, b->y));
909 } else if (num_fingers == 1) {
910 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
911 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
912 } else {
913 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
914 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
915 }
916}
917
918static void synaptics_report_ext_buttons(struct psmouse *psmouse,
919 const struct synaptics_hw_state *hw)
920{
921 struct input_dev *dev = psmouse->dev;
922 struct synaptics_data *priv = psmouse->private;
923 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
924 int i;
925
926 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
927 return;
928
929 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
930 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
931 SYN_ID_FULL(priv->info.identity) == 0x802) &&
932 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
933 return;
934
935 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
936 for (i = 0; i < ext_bits; i++) {
937 input_report_key(dev, BTN_0 + 2 * i,
938 hw->ext_buttons & BIT(i));
939 input_report_key(dev, BTN_1 + 2 * i,
940 hw->ext_buttons & BIT(i + ext_bits));
941 }
942 return;
943 }
944
945 /*
946 * This generation of touchpads has the trackstick buttons
947 * physically wired to the touchpad. Re-route them through
948 * the pass-through interface.
949 */
950 if (priv->pt_port) {
951 u8 pt_buttons;
952
953 /* The trackstick expects at most 3 buttons */
954 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
955 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
956 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
957
958 serio_interrupt(priv->pt_port,
959 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
960 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
961 }
962}
963
964static void synaptics_report_buttons(struct psmouse *psmouse,
965 const struct synaptics_hw_state *hw)
966{
967 struct input_dev *dev = psmouse->dev;
968 struct synaptics_data *priv = psmouse->private;
969
970 input_report_key(dev, BTN_LEFT, hw->left);
971 input_report_key(dev, BTN_RIGHT, hw->right);
972
973 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
974 input_report_key(dev, BTN_MIDDLE, hw->middle);
975
976 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
977 input_report_key(dev, BTN_FORWARD, hw->up);
978 input_report_key(dev, BTN_BACK, hw->down);
979 }
980
981 synaptics_report_ext_buttons(psmouse, hw);
982}
983
984static void synaptics_report_mt_data(struct psmouse *psmouse,
985 const struct synaptics_hw_state *sgm,
986 int num_fingers)
987{
988 struct input_dev *dev = psmouse->dev;
989 struct synaptics_data *priv = psmouse->private;
990 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
991 struct input_mt_pos pos[2];
992 int slot[2], nsemi, i;
993
994 nsemi = clamp_val(num_fingers, 0, 2);
995
996 for (i = 0; i < nsemi; i++) {
997 pos[i].x = hw[i]->x;
998 pos[i].y = synaptics_invert_y(hw[i]->y);
999 }
1000
1001 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
1002
1003 for (i = 0; i < nsemi; i++) {
1004 input_mt_slot(dev, slot[i]);
1005 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1006 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1007 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1008 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1009 }
1010
1011 input_mt_drop_unused(dev);
1012
1013 /* Don't use active slot count to generate BTN_TOOL events. */
1014 input_mt_report_pointer_emulation(dev, false);
1015
1016 /* Send the number of fingers reported by touchpad itself. */
1017 input_mt_report_finger_count(dev, num_fingers);
1018
1019 synaptics_report_buttons(psmouse, sgm);
1020
1021 input_sync(dev);
1022}
1023
1024static void synaptics_image_sensor_process(struct psmouse *psmouse,
1025 struct synaptics_hw_state *sgm)
1026{
1027 struct synaptics_data *priv = psmouse->private;
1028 int num_fingers;
1029
1030 /*
1031 * Update mt_state using the new finger count and current mt_state.
1032 */
1033 if (sgm->z == 0)
1034 num_fingers = 0;
1035 else if (sgm->w >= 4)
1036 num_fingers = 1;
1037 else if (sgm->w == 0)
1038 num_fingers = 2;
1039 else if (sgm->w == 1)
1040 num_fingers = priv->agm_count ? priv->agm_count : 3;
1041 else
1042 num_fingers = 4;
1043
1044 /* Send resulting input events to user space */
1045 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1046}
1047
1048static bool synaptics_has_multifinger(struct synaptics_data *priv)
1049{
1050 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1051 return true;
1052
1053 /* Advanced gesture mode also sends multi finger data */
1054 return synaptics_has_agm(priv);
1055}
1056
1057/*
1058 * called for each full received packet from the touchpad
1059 */
1060static void synaptics_process_packet(struct psmouse *psmouse)
1061{
1062 struct input_dev *dev = psmouse->dev;
1063 struct synaptics_data *priv = psmouse->private;
1064 struct synaptics_device_info *info = &priv->info;
1065 struct synaptics_hw_state hw;
1066 int num_fingers;
1067 int finger_width;
1068
1069 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1070 return;
1071
1072 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1073 synaptics_image_sensor_process(psmouse, &hw);
1074 return;
1075 }
1076
1077 if (hw.scroll) {
1078 priv->scroll += hw.scroll;
1079
1080 while (priv->scroll >= 4) {
1081 input_report_key(dev, BTN_BACK, !hw.down);
1082 input_sync(dev);
1083 input_report_key(dev, BTN_BACK, hw.down);
1084 input_sync(dev);
1085 priv->scroll -= 4;
1086 }
1087 while (priv->scroll <= -4) {
1088 input_report_key(dev, BTN_FORWARD, !hw.up);
1089 input_sync(dev);
1090 input_report_key(dev, BTN_FORWARD, hw.up);
1091 input_sync(dev);
1092 priv->scroll += 4;
1093 }
1094 return;
1095 }
1096
1097 if (hw.z > 0 && hw.x > 1) {
1098 num_fingers = 1;
1099 finger_width = 5;
1100 if (SYN_CAP_EXTENDED(info->capabilities)) {
1101 switch (hw.w) {
1102 case 0 ... 1:
1103 if (synaptics_has_multifinger(priv))
1104 num_fingers = hw.w + 2;
1105 break;
1106 case 2:
1107 if (SYN_MODEL_PEN(info->model_id))
1108 ; /* Nothing, treat a pen as a single finger */
1109 break;
1110 case 4 ... 15:
1111 if (SYN_CAP_PALMDETECT(info->capabilities))
1112 finger_width = hw.w;
1113 break;
1114 }
1115 }
1116 } else {
1117 num_fingers = 0;
1118 finger_width = 0;
1119 }
1120
1121 if (cr48_profile_sensor) {
1122 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1123 return;
1124 }
1125
1126 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1127 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1128 num_fingers);
1129
1130 /* Post events
1131 * BTN_TOUCH has to be first as mousedev relies on it when doing
1132 * absolute -> relative conversion
1133 */
1134 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1135 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1136
1137 if (num_fingers > 0) {
1138 input_report_abs(dev, ABS_X, hw.x);
1139 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1140 }
1141 input_report_abs(dev, ABS_PRESSURE, hw.z);
1142
1143 if (SYN_CAP_PALMDETECT(info->capabilities))
1144 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1145
1146 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1147 if (synaptics_has_multifinger(priv)) {
1148 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1149 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1150 }
1151
1152 synaptics_report_buttons(psmouse, &hw);
1153
1154 input_sync(dev);
1155}
1156
1157static bool synaptics_validate_byte(struct psmouse *psmouse,
1158 int idx, enum synaptics_pkt_type pkt_type)
1159{
1160 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1161 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1162 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1163 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1164 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1165 const u8 *packet = psmouse->packet;
1166
1167 if (idx < 0 || idx > 4)
1168 return false;
1169
1170 switch (pkt_type) {
1171
1172 case SYN_NEWABS:
1173 case SYN_NEWABS_RELAXED:
1174 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1175
1176 case SYN_NEWABS_STRICT:
1177 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1178
1179 case SYN_OLDABS:
1180 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1181
1182 default:
1183 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1184 return false;
1185 }
1186}
1187
1188static enum synaptics_pkt_type
1189synaptics_detect_pkt_type(struct psmouse *psmouse)
1190{
1191 int i;
1192
1193 for (i = 0; i < 5; i++) {
1194 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1195 psmouse_info(psmouse, "using relaxed packet validation\n");
1196 return SYN_NEWABS_RELAXED;
1197 }
1198 }
1199
1200 return SYN_NEWABS_STRICT;
1201}
1202
1203static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1204{
1205 struct synaptics_data *priv = psmouse->private;
1206
1207 if (psmouse->pktcnt >= 6) { /* Full packet received */
1208 if (unlikely(priv->pkt_type == SYN_NEWABS))
1209 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1210
1211 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1212 synaptics_is_pt_packet(psmouse->packet)) {
1213 if (priv->pt_port)
1214 synaptics_pass_pt_packet(priv->pt_port,
1215 psmouse->packet);
1216 } else
1217 synaptics_process_packet(psmouse);
1218
1219 return PSMOUSE_FULL_PACKET;
1220 }
1221
1222 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1223 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1224}
1225
1226/*****************************************************************************
1227 * Driver initialization/cleanup functions
1228 ****************************************************************************/
1229static void set_abs_position_params(struct input_dev *dev,
1230 struct synaptics_device_info *info,
1231 int x_code, int y_code)
1232{
1233 int x_min = info->x_min ?: XMIN_NOMINAL;
1234 int x_max = info->x_max ?: XMAX_NOMINAL;
1235 int y_min = info->y_min ?: YMIN_NOMINAL;
1236 int y_max = info->y_max ?: YMAX_NOMINAL;
1237 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1238 SYN_REDUCED_FILTER_FUZZ : 0;
1239
1240 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1241 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1242 input_abs_set_res(dev, x_code, info->x_res);
1243 input_abs_set_res(dev, y_code, info->y_res);
1244}
1245
1246static int set_input_params(struct psmouse *psmouse,
1247 struct synaptics_data *priv)
1248{
1249 struct input_dev *dev = psmouse->dev;
1250 struct synaptics_device_info *info = &priv->info;
1251 int i;
1252 int error;
1253
1254 /* Reset default psmouse capabilities */
1255 __clear_bit(EV_REL, dev->evbit);
1256 bitmap_zero(dev->relbit, REL_CNT);
1257 bitmap_zero(dev->keybit, KEY_CNT);
1258
1259 /* Things that apply to both modes */
1260 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1261
1262 input_set_capability(dev, EV_KEY, BTN_LEFT);
1263
1264 /* Clickpads report only left button */
1265 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1266 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1267 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1268 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1269 }
1270
1271 if (!priv->absolute_mode) {
1272 /* Relative mode */
1273 input_set_capability(dev, EV_REL, REL_X);
1274 input_set_capability(dev, EV_REL, REL_Y);
1275 return 0;
1276 }
1277
1278 /* Absolute mode */
1279 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1280 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1281
1282 if (cr48_profile_sensor)
1283 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1284
1285 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1286 set_abs_position_params(dev, info,
1287 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1288 /* Image sensors can report per-contact pressure */
1289 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1290
1291 error = input_mt_init_slots(dev, 2,
1292 INPUT_MT_POINTER | INPUT_MT_TRACK);
1293 if (error)
1294 return error;
1295
1296 /* Image sensors can signal 4 and 5 finger clicks */
1297 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1298 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1299 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1300 set_abs_position_params(dev, info,
1301 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1302 /*
1303 * Profile sensor in CR-48 tracks contacts reasonably well,
1304 * other non-image sensors with AGM use semi-mt.
1305 */
1306 error = input_mt_init_slots(dev, 2,
1307 INPUT_MT_POINTER |
1308 (cr48_profile_sensor ?
1309 INPUT_MT_TRACK :
1310 INPUT_MT_SEMI_MT));
1311 if (error)
1312 return error;
1313
1314 /*
1315 * For semi-mt devices we send ABS_X/Y ourselves instead of
1316 * input_mt_report_pointer_emulation. But
1317 * input_mt_init_slots() resets the fuzz to 0, leading to a
1318 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1319 * position. Let's re-initialize ABS_X/Y here.
1320 */
1321 if (!cr48_profile_sensor)
1322 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1323 }
1324
1325 if (SYN_CAP_PALMDETECT(info->capabilities))
1326 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1327
1328 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1329 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1330
1331 if (synaptics_has_multifinger(priv)) {
1332 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1333 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1334 }
1335
1336 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1337 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1338 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1339 input_set_capability(dev, EV_KEY, BTN_BACK);
1340 }
1341
1342 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1343 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1344 input_set_capability(dev, EV_KEY, BTN_0 + i);
1345
1346 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1347 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1348 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1349 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1350 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1351 }
1352
1353 return 0;
1354}
1355
1356static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1357 void *data, char *buf)
1358{
1359 struct synaptics_data *priv = psmouse->private;
1360
1361 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1362}
1363
1364static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1365 void *data, const char *buf,
1366 size_t len)
1367{
1368 struct synaptics_data *priv = psmouse->private;
1369 unsigned int value;
1370 int err;
1371
1372 err = kstrtouint(buf, 10, &value);
1373 if (err)
1374 return err;
1375
1376 if (value > 1)
1377 return -EINVAL;
1378
1379 if (value == priv->disable_gesture)
1380 return len;
1381
1382 priv->disable_gesture = value;
1383 if (value)
1384 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1385 else
1386 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1387
1388 if (synaptics_mode_cmd(psmouse, priv->mode))
1389 return -EIO;
1390
1391 return len;
1392}
1393
1394PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1395 synaptics_show_disable_gesture,
1396 synaptics_set_disable_gesture);
1397
1398static void synaptics_disconnect(struct psmouse *psmouse)
1399{
1400 struct synaptics_data *priv = psmouse->private;
1401
1402 /*
1403 * We might have left a breadcrumb when trying to
1404 * set up SMbus companion.
1405 */
1406 psmouse_smbus_cleanup(psmouse);
1407
1408 if (!priv->absolute_mode &&
1409 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1410 device_remove_file(&psmouse->ps2dev.serio->dev,
1411 &psmouse_attr_disable_gesture.dattr);
1412
1413 synaptics_reset(psmouse);
1414 kfree(priv);
1415 psmouse->private = NULL;
1416}
1417
1418static int synaptics_reconnect(struct psmouse *psmouse)
1419{
1420 struct synaptics_data *priv = psmouse->private;
1421 struct synaptics_device_info info;
1422 u8 param[2];
1423 int retry = 0;
1424 int error;
1425
1426 do {
1427 psmouse_reset(psmouse);
1428 if (retry) {
1429 /*
1430 * On some boxes, right after resuming, the touchpad
1431 * needs some time to finish initializing (I assume
1432 * it needs time to calibrate) and start responding
1433 * to Synaptics-specific queries, so let's wait a
1434 * bit.
1435 */
1436 ssleep(1);
1437 }
1438 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1439 error = synaptics_detect(psmouse, 0);
1440 } while (error && ++retry < 3);
1441
1442 if (error)
1443 return error;
1444
1445 if (retry > 1)
1446 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1447
1448 error = synaptics_query_hardware(psmouse, &info);
1449 if (error) {
1450 psmouse_err(psmouse, "Unable to query device.\n");
1451 return error;
1452 }
1453
1454 error = synaptics_set_mode(psmouse);
1455 if (error) {
1456 psmouse_err(psmouse, "Unable to initialize device.\n");
1457 return error;
1458 }
1459
1460 if (info.identity != priv->info.identity ||
1461 info.model_id != priv->info.model_id ||
1462 info.capabilities != priv->info.capabilities ||
1463 info.ext_cap != priv->info.ext_cap) {
1464 psmouse_err(psmouse,
1465 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1466 priv->info.identity, info.identity,
1467 priv->info.model_id, info.model_id,
1468 priv->info.capabilities, info.capabilities,
1469 priv->info.ext_cap, info.ext_cap);
1470 return -ENXIO;
1471 }
1472
1473 return 0;
1474}
1475
1476static bool impaired_toshiba_kbc;
1477
1478static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1479#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1480 {
1481 /* Toshiba Satellite */
1482 .matches = {
1483 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1484 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1485 },
1486 },
1487 {
1488 /* Toshiba Dynabook */
1489 .matches = {
1490 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1491 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1492 },
1493 },
1494 {
1495 /* Toshiba Portege M300 */
1496 .matches = {
1497 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1498 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1499 },
1500
1501 },
1502 {
1503 /* Toshiba Portege M300 */
1504 .matches = {
1505 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1506 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1507 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1508 },
1509
1510 },
1511#endif
1512 { }
1513};
1514
1515static bool broken_olpc_ec;
1516
1517static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1518#if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1519 {
1520 /* OLPC XO-1 or XO-1.5 */
1521 .matches = {
1522 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1523 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1524 },
1525 },
1526#endif
1527 { }
1528};
1529
1530static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1531#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1532 {
1533 /* Cr-48 Chromebook (Codename Mario) */
1534 .matches = {
1535 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1536 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1537 },
1538 },
1539#endif
1540 { }
1541};
1542
1543void __init synaptics_module_init(void)
1544{
1545 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1546 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1547 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1548}
1549
1550static int synaptics_init_ps2(struct psmouse *psmouse,
1551 struct synaptics_device_info *info,
1552 bool absolute_mode)
1553{
1554 struct synaptics_data *priv;
1555 int err;
1556
1557 synaptics_apply_quirks(psmouse, info);
1558
1559 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1560 if (!priv)
1561 return -ENOMEM;
1562
1563 priv->info = *info;
1564 priv->absolute_mode = absolute_mode;
1565 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1566 priv->disable_gesture = true;
1567
1568 /*
1569 * Unfortunately ForcePad capability is not exported over PS/2,
1570 * so we have to resort to checking PNP IDs.
1571 */
1572 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1573
1574 err = synaptics_set_mode(psmouse);
1575 if (err) {
1576 psmouse_err(psmouse, "Unable to initialize device.\n");
1577 goto init_fail;
1578 }
1579
1580 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1581 SYN_NEWABS : SYN_OLDABS;
1582
1583 psmouse_info(psmouse,
1584 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1585 SYN_ID_MODEL(info->identity),
1586 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1587 info->model_id,
1588 info->capabilities, info->ext_cap, info->ext_cap_0c,
1589 info->ext_cap_10, info->board_id, info->firmware_id);
1590
1591 err = set_input_params(psmouse, priv);
1592 if (err) {
1593 psmouse_err(psmouse,
1594 "failed to set up capabilities: %d\n", err);
1595 goto init_fail;
1596 }
1597
1598 /*
1599 * Encode touchpad model so that it can be used to set
1600 * input device->id.version and be visible to userspace.
1601 * Because version is __u16 we have to drop something.
1602 * Hardware info bits seem to be good candidates as they
1603 * are documented to be for Synaptics corp. internal use.
1604 */
1605 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1606 (info->model_id & 0x000000ff);
1607
1608 if (absolute_mode) {
1609 psmouse->protocol_handler = synaptics_process_byte;
1610 psmouse->pktsize = 6;
1611 } else {
1612 /* Relative mode follows standard PS/2 mouse protocol */
1613 psmouse->protocol_handler = psmouse_process_byte;
1614 psmouse->pktsize = 3;
1615 }
1616
1617 psmouse->set_rate = synaptics_set_rate;
1618 psmouse->disconnect = synaptics_disconnect;
1619 psmouse->reconnect = synaptics_reconnect;
1620 psmouse->cleanup = synaptics_reset;
1621 /* Synaptics can usually stay in sync without extra help */
1622 psmouse->resync_time = 0;
1623
1624 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1625 synaptics_pt_create(psmouse);
1626
1627 /*
1628 * Toshiba's KBC seems to have trouble handling data from
1629 * Synaptics at full rate. Switch to a lower rate (roughly
1630 * the same rate as a standard PS/2 mouse).
1631 */
1632 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1633 psmouse_info(psmouse,
1634 "Toshiba %s detected, limiting rate to 40pps.\n",
1635 dmi_get_system_info(DMI_PRODUCT_NAME));
1636 psmouse->rate = 40;
1637 }
1638
1639 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1640 err = device_create_file(&psmouse->ps2dev.serio->dev,
1641 &psmouse_attr_disable_gesture.dattr);
1642 if (err) {
1643 psmouse_err(psmouse,
1644 "Failed to create disable_gesture attribute (%d)",
1645 err);
1646 goto init_fail;
1647 }
1648 }
1649
1650 return 0;
1651
1652 init_fail:
1653 kfree(priv);
1654 return err;
1655}
1656
1657static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1658{
1659 struct synaptics_device_info info;
1660 int error;
1661
1662 psmouse_reset(psmouse);
1663
1664 error = synaptics_query_hardware(psmouse, &info);
1665 if (error) {
1666 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1667 return error;
1668 }
1669
1670 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1671}
1672
1673int synaptics_init_absolute(struct psmouse *psmouse)
1674{
1675 return __synaptics_init(psmouse, true);
1676}
1677
1678int synaptics_init_relative(struct psmouse *psmouse)
1679{
1680 return __synaptics_init(psmouse, false);
1681}
1682
1683static int synaptics_setup_ps2(struct psmouse *psmouse,
1684 struct synaptics_device_info *info)
1685{
1686 bool absolute_mode = true;
1687 int error;
1688
1689 /*
1690 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1691 * packet spew overloads the EC such that key presses on the keyboard
1692 * are missed. Given that, don't even attempt to use Absolute mode.
1693 * Relative mode seems to work just fine.
1694 */
1695 if (broken_olpc_ec) {
1696 psmouse_info(psmouse,
1697 "OLPC XO detected, forcing relative protocol.\n");
1698 absolute_mode = false;
1699 }
1700
1701 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1702 if (error)
1703 return error;
1704
1705 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1706}
1707
1708#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1709
1710void __init synaptics_module_init(void)
1711{
1712}
1713
1714static int __maybe_unused
1715synaptics_setup_ps2(struct psmouse *psmouse,
1716 struct synaptics_device_info *info)
1717{
1718 return -ENOSYS;
1719}
1720
1721#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1722
1723#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1724
1725/*
1726 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1727 * provides a better bandwidth and allow a better control of the touchpads.
1728 * This is used to decide if we need to use this bus or not.
1729 */
1730enum {
1731 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1732 SYNAPTICS_INTERTOUCH_OFF,
1733 SYNAPTICS_INTERTOUCH_ON,
1734};
1735
1736static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1737 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1738module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1739MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1740
1741static int synaptics_create_intertouch(struct psmouse *psmouse,
1742 struct synaptics_device_info *info,
1743 bool leave_breadcrumbs)
1744{
1745 bool topbuttonpad =
1746 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1747 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1748 const struct rmi_device_platform_data pdata = {
1749 .sensor_pdata = {
1750 .sensor_type = rmi_sensor_touchpad,
1751 .axis_align.flip_y = true,
1752 .kernel_tracking = false,
1753 .topbuttonpad = topbuttonpad,
1754 },
1755 .f30_data = {
1756 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1757 .trackstick_buttons =
1758 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1759 },
1760 };
1761 const struct i2c_board_info intertouch_board = {
1762 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1763 .flags = I2C_CLIENT_HOST_NOTIFY,
1764 };
1765
1766 return psmouse_smbus_init(psmouse, &intertouch_board,
1767 &pdata, sizeof(pdata), true,
1768 leave_breadcrumbs);
1769}
1770
1771/**
1772 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1773 * and decides to instantiate a SMBus InterTouch device.
1774 */
1775static int synaptics_setup_intertouch(struct psmouse *psmouse,
1776 struct synaptics_device_info *info,
1777 bool leave_breadcrumbs)
1778{
1779 int error;
1780
1781 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1782 return -ENXIO;
1783
1784 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1785 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1786 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1787
1788 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1789 psmouse_info(psmouse,
1790 "Your touchpad (%s) says it can support a different bus. "
1791 "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",
1792 psmouse->ps2dev.serio->firmware_id);
1793
1794 return -ENXIO;
1795 }
1796 }
1797
1798 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1799
1800 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1801 if (error) {
1802 if (error == -EAGAIN)
1803 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1804 else
1805 psmouse_err(psmouse, "unable to create intertouch device\n");
1806
1807 return error;
1808 }
1809
1810 return 0;
1811}
1812
1813int synaptics_init_smbus(struct psmouse *psmouse)
1814{
1815 struct synaptics_device_info info;
1816 int error;
1817
1818 psmouse_reset(psmouse);
1819
1820 error = synaptics_query_hardware(psmouse, &info);
1821 if (error) {
1822 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1823 return error;
1824 }
1825
1826 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1827 return -ENXIO;
1828
1829 return synaptics_create_intertouch(psmouse, &info, false);
1830}
1831
1832#else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1833
1834static int __maybe_unused
1835synaptics_setup_intertouch(struct psmouse *psmouse,
1836 struct synaptics_device_info *info,
1837 bool leave_breadcrumbs)
1838{
1839 return -ENOSYS;
1840}
1841
1842int synaptics_init_smbus(struct psmouse *psmouse)
1843{
1844 return -ENOSYS;
1845}
1846
1847#endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1848
1849#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1850 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1851
1852int synaptics_init(struct psmouse *psmouse)
1853{
1854 struct synaptics_device_info info;
1855 int error;
1856 int retval;
1857
1858 psmouse_reset(psmouse);
1859
1860 error = synaptics_query_hardware(psmouse, &info);
1861 if (error) {
1862 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1863 return error;
1864 }
1865
1866 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1867 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1868 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1869 /* Forcepads need F21, which is not ready */
1870 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1871 psmouse_warn(psmouse,
1872 "The touchpad can support a better bus than the too old PS/2 protocol. "
1873 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1874 }
1875
1876 error = synaptics_setup_intertouch(psmouse, &info, true);
1877 if (!error)
1878 return PSMOUSE_SYNAPTICS_SMBUS;
1879 }
1880
1881 retval = synaptics_setup_ps2(psmouse, &info);
1882 if (retval < 0) {
1883 /*
1884 * Not using any flavor of Synaptics support, so clean up
1885 * SMbus breadcrumbs, if any.
1886 */
1887 psmouse_smbus_cleanup(psmouse);
1888 }
1889
1890 return retval;
1891}
1892
1893#else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1894
1895int synaptics_init(struct psmouse *psmouse)
1896{
1897 return -ENOSYS;
1898}
1899
1900#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */