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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 "LEN0049",
150 "LEN2000", /* S540 */
151 "LEN2001", /* Edge E431 */
152 "LEN2002", /* Edge E531 */
153 "LEN2003",
154 "LEN2004", /* L440 */
155 "LEN2005",
156 "LEN2006", /* Edge E440/E540 */
157 "LEN2007",
158 "LEN2008",
159 "LEN2009",
160 "LEN200A",
161 "LEN200B",
162 NULL
163};
164
165static const char * const smbus_pnp_ids[] = {
166 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
167 "LEN0048", /* X1 Carbon 3 */
168 "LEN0046", /* X250 */
169 "LEN004a", /* W541 */
170 "LEN005b", /* P50 */
171 "LEN005e", /* T560 */
172 "LEN0071", /* T480 */
173 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
174 "LEN0073", /* X1 Carbon G5 (Elantech) */
175 "LEN0092", /* X1 Carbon 6 */
176 "LEN0093", /* T480 */
177 "LEN0096", /* X280 */
178 "LEN0097", /* X280 -> ALPS trackpoint */
179 "LEN009b", /* T580 */
180 "LEN200f", /* T450s */
181 "LEN2054", /* E480 */
182 "LEN2055", /* E580 */
183 "SYN3052", /* HP EliteBook 840 G4 */
184 "SYN3221", /* HP 15-ay000 */
185 "SYN323d", /* HP Spectre X360 13-w013dx */
186 NULL
187};
188
189static const char * const forcepad_pnp_ids[] = {
190 "SYN300D",
191 "SYN3014",
192 NULL
193};
194
195/*
196 * Send a command to the synaptics touchpad by special commands
197 */
198static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
199{
200 int error;
201
202 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
203 if (error)
204 return error;
205
206 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
207 if (error)
208 return error;
209
210 return 0;
211}
212
213static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
214{
215 int error;
216 union {
217 __be32 be_val;
218 char buf[4];
219 } resp = { 0 };
220
221 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
222 if (error)
223 return error;
224
225 *val = be32_to_cpu(resp.be_val);
226 return 0;
227}
228
229/*
230 * Identify Touchpad
231 * See also the SYN_ID_* macros
232 */
233static int synaptics_identify(struct psmouse *psmouse,
234 struct synaptics_device_info *info)
235{
236 int error;
237
238 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
239 if (error)
240 return error;
241
242 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
243}
244
245/*
246 * Read the model-id bytes from the touchpad
247 * see also SYN_MODEL_* macros
248 */
249static int synaptics_model_id(struct psmouse *psmouse,
250 struct synaptics_device_info *info)
251{
252 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
253}
254
255/*
256 * Read the firmware id from the touchpad
257 */
258static int synaptics_firmware_id(struct psmouse *psmouse,
259 struct synaptics_device_info *info)
260{
261 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
262 &info->firmware_id);
263}
264
265/*
266 * Read the board id and the "More Extended Queries" from the touchpad
267 * The board id is encoded in the "QUERY MODES" response
268 */
269static int synaptics_query_modes(struct psmouse *psmouse,
270 struct synaptics_device_info *info)
271{
272 u8 bid[3];
273 int error;
274
275 /* firmwares prior 7.5 have no board_id encoded */
276 if (SYN_ID_FULL(info->identity) < 0x705)
277 return 0;
278
279 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
280 if (error)
281 return error;
282
283 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
284
285 if (SYN_MEXT_CAP_BIT(bid[0]))
286 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
287 &info->ext_cap_10);
288
289 return 0;
290}
291
292/*
293 * Read the capability-bits from the touchpad
294 * see also the SYN_CAP_* macros
295 */
296static int synaptics_capability(struct psmouse *psmouse,
297 struct synaptics_device_info *info)
298{
299 int error;
300
301 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
302 &info->capabilities);
303 if (error)
304 return error;
305
306 info->ext_cap = info->ext_cap_0c = 0;
307
308 /*
309 * Older firmwares had submodel ID fixed to 0x47
310 */
311 if (SYN_ID_FULL(info->identity) < 0x705 &&
312 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
313 return -ENXIO;
314 }
315
316 /*
317 * Unless capExtended is set the rest of the flags should be ignored
318 */
319 if (!SYN_CAP_EXTENDED(info->capabilities))
320 info->capabilities = 0;
321
322 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
323 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
324 &info->ext_cap);
325 if (error) {
326 psmouse_warn(psmouse,
327 "device claims to have extended capabilities, but I'm not able to read them.\n");
328 } else {
329 /*
330 * if nExtBtn is greater than 8 it should be considered
331 * invalid and treated as 0
332 */
333 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
334 info->ext_cap &= ~SYN_CAP_MB_MASK;
335 }
336 }
337
338 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
339 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
340 &info->ext_cap_0c);
341 if (error)
342 psmouse_warn(psmouse,
343 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
344 }
345
346 return 0;
347}
348
349/*
350 * Read touchpad resolution and maximum reported coordinates
351 * Resolution is left zero if touchpad does not support the query
352 */
353static int synaptics_resolution(struct psmouse *psmouse,
354 struct synaptics_device_info *info)
355{
356 u8 resp[3];
357 int error;
358
359 if (SYN_ID_MAJOR(info->identity) < 4)
360 return 0;
361
362 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
363 if (!error) {
364 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
365 info->x_res = resp[0]; /* x resolution in units/mm */
366 info->y_res = resp[2]; /* y resolution in units/mm */
367 }
368 }
369
370 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
371 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
372 error = synaptics_send_cmd(psmouse,
373 SYN_QUE_EXT_MAX_COORDS, resp);
374 if (error) {
375 psmouse_warn(psmouse,
376 "device claims to have max coordinates query, but I'm not able to read it.\n");
377 } else {
378 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
379 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
380 psmouse_info(psmouse,
381 "queried max coordinates: x [..%d], y [..%d]\n",
382 info->x_max, info->y_max);
383 }
384 }
385
386 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
387 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
388 /*
389 * Firmware v8.1 does not report proper number of extended
390 * capabilities, but has been proven to report correct min
391 * coordinates.
392 */
393 SYN_ID_FULL(info->identity) == 0x801)) {
394 error = synaptics_send_cmd(psmouse,
395 SYN_QUE_EXT_MIN_COORDS, resp);
396 if (error) {
397 psmouse_warn(psmouse,
398 "device claims to have min coordinates query, but I'm not able to read it.\n");
399 } else {
400 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
401 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
402 psmouse_info(psmouse,
403 "queried min coordinates: x [%d..], y [%d..]\n",
404 info->x_min, info->y_min);
405 }
406 }
407
408 return 0;
409}
410
411static int synaptics_query_hardware(struct psmouse *psmouse,
412 struct synaptics_device_info *info)
413{
414 int error;
415
416 memset(info, 0, sizeof(*info));
417
418 error = synaptics_identify(psmouse, info);
419 if (error)
420 return error;
421
422 error = synaptics_model_id(psmouse, info);
423 if (error)
424 return error;
425
426 error = synaptics_firmware_id(psmouse, info);
427 if (error)
428 return error;
429
430 error = synaptics_query_modes(psmouse, info);
431 if (error)
432 return error;
433
434 error = synaptics_capability(psmouse, info);
435 if (error)
436 return error;
437
438 error = synaptics_resolution(psmouse, info);
439 if (error)
440 return error;
441
442 return 0;
443}
444
445#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
446
447#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
448
449static bool cr48_profile_sensor;
450
451#define ANY_BOARD_ID 0
452struct min_max_quirk {
453 const char * const *pnp_ids;
454 struct {
455 u32 min, max;
456 } board_id;
457 u32 x_min, x_max, y_min, y_max;
458};
459
460static const struct min_max_quirk min_max_pnpid_table[] = {
461 {
462 (const char * const []){"LEN0033", NULL},
463 {ANY_BOARD_ID, ANY_BOARD_ID},
464 1024, 5052, 2258, 4832
465 },
466 {
467 (const char * const []){"LEN0042", NULL},
468 {ANY_BOARD_ID, ANY_BOARD_ID},
469 1232, 5710, 1156, 4696
470 },
471 {
472 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
473 "LEN0039", "LEN2002", "LEN2004",
474 NULL},
475 {ANY_BOARD_ID, 2961},
476 1024, 5112, 2024, 4832
477 },
478 {
479 (const char * const []){"LEN2000", NULL},
480 {ANY_BOARD_ID, ANY_BOARD_ID},
481 1024, 5113, 2021, 4832
482 },
483 {
484 (const char * const []){"LEN2001", NULL},
485 {ANY_BOARD_ID, ANY_BOARD_ID},
486 1024, 5022, 2508, 4832
487 },
488 {
489 (const char * const []){"LEN2006", NULL},
490 {2691, 2691},
491 1024, 5045, 2457, 4832
492 },
493 {
494 (const char * const []){"LEN2006", NULL},
495 {ANY_BOARD_ID, ANY_BOARD_ID},
496 1264, 5675, 1171, 4688
497 },
498 { }
499};
500
501/*****************************************************************************
502 * Synaptics communications functions
503 ****************************************************************************/
504
505/*
506 * Synaptics touchpads report the y coordinate from bottom to top, which is
507 * opposite from what userspace expects.
508 * This function is used to invert y before reporting.
509 */
510static int synaptics_invert_y(int y)
511{
512 return YMAX_NOMINAL + YMIN_NOMINAL - y;
513}
514
515/*
516 * Apply quirk(s) if the hardware matches
517 */
518static void synaptics_apply_quirks(struct psmouse *psmouse,
519 struct synaptics_device_info *info)
520{
521 int i;
522
523 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
524 if (!psmouse_matches_pnp_id(psmouse,
525 min_max_pnpid_table[i].pnp_ids))
526 continue;
527
528 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
529 info->board_id < min_max_pnpid_table[i].board_id.min)
530 continue;
531
532 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
533 info->board_id > min_max_pnpid_table[i].board_id.max)
534 continue;
535
536 info->x_min = min_max_pnpid_table[i].x_min;
537 info->x_max = min_max_pnpid_table[i].x_max;
538 info->y_min = min_max_pnpid_table[i].y_min;
539 info->y_max = min_max_pnpid_table[i].y_max;
540 psmouse_info(psmouse,
541 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
542 info->x_min, info->x_max,
543 info->y_min, info->y_max);
544 break;
545 }
546}
547
548static bool synaptics_has_agm(struct synaptics_data *priv)
549{
550 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
551 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
552}
553
554static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
555{
556 static u8 param = 0xc8;
557 int error;
558
559 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
560 if (error)
561 return error;
562
563 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE);
564 if (error)
565 return error;
566
567 return 0;
568}
569
570static int synaptics_set_mode(struct psmouse *psmouse)
571{
572 struct synaptics_data *priv = psmouse->private;
573 int error;
574
575 priv->mode = 0;
576 if (priv->absolute_mode)
577 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
578 if (priv->disable_gesture)
579 priv->mode |= SYN_BIT_DISABLE_GESTURE;
580 if (psmouse->rate >= 80)
581 priv->mode |= SYN_BIT_HIGH_RATE;
582 if (SYN_CAP_EXTENDED(priv->info.capabilities))
583 priv->mode |= SYN_BIT_W_MODE;
584
585 error = synaptics_mode_cmd(psmouse, priv->mode);
586 if (error)
587 return error;
588
589 if (priv->absolute_mode && synaptics_has_agm(priv)) {
590 error = synaptics_set_advanced_gesture_mode(psmouse);
591 if (error) {
592 psmouse_err(psmouse,
593 "Advanced gesture mode init failed: %d\n",
594 error);
595 return error;
596 }
597 }
598
599 return 0;
600}
601
602static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
603{
604 struct synaptics_data *priv = psmouse->private;
605
606 if (rate >= 80) {
607 priv->mode |= SYN_BIT_HIGH_RATE;
608 psmouse->rate = 80;
609 } else {
610 priv->mode &= ~SYN_BIT_HIGH_RATE;
611 psmouse->rate = 40;
612 }
613
614 synaptics_mode_cmd(psmouse, priv->mode);
615}
616
617/*****************************************************************************
618 * Synaptics pass-through PS/2 port support
619 ****************************************************************************/
620static int synaptics_pt_write(struct serio *serio, u8 c)
621{
622 struct psmouse *parent = serio_get_drvdata(serio->parent);
623 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
624 int error;
625
626 error = ps2_sliced_command(&parent->ps2dev, c);
627 if (error)
628 return error;
629
630 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
631 if (error)
632 return error;
633
634 return 0;
635}
636
637static int synaptics_pt_start(struct serio *serio)
638{
639 struct psmouse *parent = serio_get_drvdata(serio->parent);
640 struct synaptics_data *priv = parent->private;
641
642 serio_pause_rx(parent->ps2dev.serio);
643 priv->pt_port = serio;
644 serio_continue_rx(parent->ps2dev.serio);
645
646 return 0;
647}
648
649static void synaptics_pt_stop(struct serio *serio)
650{
651 struct psmouse *parent = serio_get_drvdata(serio->parent);
652 struct synaptics_data *priv = parent->private;
653
654 serio_pause_rx(parent->ps2dev.serio);
655 priv->pt_port = NULL;
656 serio_continue_rx(parent->ps2dev.serio);
657}
658
659static int synaptics_is_pt_packet(u8 *buf)
660{
661 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
662}
663
664static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
665{
666 struct psmouse *child = serio_get_drvdata(ptport);
667
668 if (child && child->state == PSMOUSE_ACTIVATED) {
669 serio_interrupt(ptport, packet[1], 0);
670 serio_interrupt(ptport, packet[4], 0);
671 serio_interrupt(ptport, packet[5], 0);
672 if (child->pktsize == 4)
673 serio_interrupt(ptport, packet[2], 0);
674 } else {
675 serio_interrupt(ptport, packet[1], 0);
676 }
677}
678
679static void synaptics_pt_activate(struct psmouse *psmouse)
680{
681 struct synaptics_data *priv = psmouse->private;
682 struct psmouse *child = serio_get_drvdata(priv->pt_port);
683
684 /* adjust the touchpad to child's choice of protocol */
685 if (child) {
686 if (child->pktsize == 4)
687 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
688 else
689 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
690
691 if (synaptics_mode_cmd(psmouse, priv->mode))
692 psmouse_warn(psmouse,
693 "failed to switch guest protocol\n");
694 }
695}
696
697static void synaptics_pt_create(struct psmouse *psmouse)
698{
699 struct serio *serio;
700
701 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
702 if (!serio) {
703 psmouse_err(psmouse,
704 "not enough memory for pass-through port\n");
705 return;
706 }
707
708 serio->id.type = SERIO_PS_PSTHRU;
709 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
710 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
711 serio->write = synaptics_pt_write;
712 serio->start = synaptics_pt_start;
713 serio->stop = synaptics_pt_stop;
714 serio->parent = psmouse->ps2dev.serio;
715
716 psmouse->pt_activate = synaptics_pt_activate;
717
718 psmouse_info(psmouse, "serio: %s port at %s\n",
719 serio->name, psmouse->phys);
720 serio_register_port(serio);
721}
722
723/*****************************************************************************
724 * Functions to interpret the absolute mode packets
725 ****************************************************************************/
726
727static void synaptics_parse_agm(const u8 buf[],
728 struct synaptics_data *priv,
729 struct synaptics_hw_state *hw)
730{
731 struct synaptics_hw_state *agm = &priv->agm;
732 int agm_packet_type;
733
734 agm_packet_type = (buf[5] & 0x30) >> 4;
735 switch (agm_packet_type) {
736 case 1:
737 /* Gesture packet: (x, y, z) half resolution */
738 agm->w = hw->w;
739 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
740 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
741 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
742 break;
743
744 case 2:
745 /* AGM-CONTACT packet: we are only interested in the count */
746 priv->agm_count = buf[1];
747 break;
748
749 default:
750 break;
751 }
752}
753
754static void synaptics_parse_ext_buttons(const u8 buf[],
755 struct synaptics_data *priv,
756 struct synaptics_hw_state *hw)
757{
758 unsigned int ext_bits =
759 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
760 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
761
762 hw->ext_buttons = buf[4] & ext_mask;
763 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
764}
765
766static int synaptics_parse_hw_state(const u8 buf[],
767 struct synaptics_data *priv,
768 struct synaptics_hw_state *hw)
769{
770 memset(hw, 0, sizeof(struct synaptics_hw_state));
771
772 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
773 hw->w = (((buf[0] & 0x30) >> 2) |
774 ((buf[0] & 0x04) >> 1) |
775 ((buf[3] & 0x04) >> 2));
776
777 if (synaptics_has_agm(priv) && hw->w == 2) {
778 synaptics_parse_agm(buf, priv, hw);
779 return 1;
780 }
781
782 hw->x = (((buf[3] & 0x10) << 8) |
783 ((buf[1] & 0x0f) << 8) |
784 buf[4]);
785 hw->y = (((buf[3] & 0x20) << 7) |
786 ((buf[1] & 0xf0) << 4) |
787 buf[5]);
788 hw->z = buf[2];
789
790 hw->left = (buf[0] & 0x01) ? 1 : 0;
791 hw->right = (buf[0] & 0x02) ? 1 : 0;
792
793 if (priv->is_forcepad) {
794 /*
795 * ForcePads, like Clickpads, use middle button
796 * bits to report primary button clicks.
797 * Unfortunately they report primary button not
798 * only when user presses on the pad above certain
799 * threshold, but also when there are more than one
800 * finger on the touchpad, which interferes with
801 * out multi-finger gestures.
802 */
803 if (hw->z == 0) {
804 /* No contacts */
805 priv->press = priv->report_press = false;
806 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
807 /*
808 * Single-finger touch with pressure above
809 * the threshold. If pressure stays long
810 * enough, we'll start reporting primary
811 * button. We rely on the device continuing
812 * sending data even if finger does not
813 * move.
814 */
815 if (!priv->press) {
816 priv->press_start = jiffies;
817 priv->press = true;
818 } else if (time_after(jiffies,
819 priv->press_start +
820 msecs_to_jiffies(50))) {
821 priv->report_press = true;
822 }
823 } else {
824 priv->press = false;
825 }
826
827 hw->left = priv->report_press;
828
829 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
830 /*
831 * Clickpad's button is transmitted as middle button,
832 * however, since it is primary button, we will report
833 * it as BTN_LEFT.
834 */
835 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
836
837 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
838 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
839 if (hw->w == 2)
840 hw->scroll = (s8)buf[1];
841 }
842
843 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
844 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
845 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
846 }
847
848 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
849 ((buf[0] ^ buf[3]) & 0x02)) {
850 synaptics_parse_ext_buttons(buf, priv, hw);
851 }
852 } else {
853 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
854 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
855
856 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
857 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
858
859 hw->left = (buf[0] & 0x01) ? 1 : 0;
860 hw->right = (buf[0] & 0x02) ? 1 : 0;
861 }
862
863 /*
864 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
865 * is used by some firmware to indicate a finger at the edge of
866 * the touchpad whose precise position cannot be determined, so
867 * convert these values to the maximum axis value.
868 */
869 if (hw->x > X_MAX_POSITIVE)
870 hw->x -= 1 << ABS_POS_BITS;
871 else if (hw->x == X_MAX_POSITIVE)
872 hw->x = XMAX;
873
874 if (hw->y > Y_MAX_POSITIVE)
875 hw->y -= 1 << ABS_POS_BITS;
876 else if (hw->y == Y_MAX_POSITIVE)
877 hw->y = YMAX;
878
879 return 0;
880}
881
882static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
883 bool active, int x, int y)
884{
885 input_mt_slot(dev, slot);
886 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
887 if (active) {
888 input_report_abs(dev, ABS_MT_POSITION_X, x);
889 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
890 }
891}
892
893static void synaptics_report_semi_mt_data(struct input_dev *dev,
894 const struct synaptics_hw_state *a,
895 const struct synaptics_hw_state *b,
896 int num_fingers)
897{
898 if (num_fingers >= 2) {
899 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
900 min(a->y, b->y));
901 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
902 max(a->y, b->y));
903 } else if (num_fingers == 1) {
904 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
905 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
906 } else {
907 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
908 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
909 }
910}
911
912static void synaptics_report_ext_buttons(struct psmouse *psmouse,
913 const struct synaptics_hw_state *hw)
914{
915 struct input_dev *dev = psmouse->dev;
916 struct synaptics_data *priv = psmouse->private;
917 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
918 int i;
919
920 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
921 return;
922
923 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
924 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
925 SYN_ID_FULL(priv->info.identity) == 0x802) &&
926 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
927 return;
928
929 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
930 for (i = 0; i < ext_bits; i++) {
931 input_report_key(dev, BTN_0 + 2 * i,
932 hw->ext_buttons & BIT(i));
933 input_report_key(dev, BTN_1 + 2 * i,
934 hw->ext_buttons & BIT(i + ext_bits));
935 }
936 return;
937 }
938
939 /*
940 * This generation of touchpads has the trackstick buttons
941 * physically wired to the touchpad. Re-route them through
942 * the pass-through interface.
943 */
944 if (priv->pt_port) {
945 u8 pt_buttons;
946
947 /* The trackstick expects at most 3 buttons */
948 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
949 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
950 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
951
952 serio_interrupt(priv->pt_port,
953 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
954 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
955 }
956}
957
958static void synaptics_report_buttons(struct psmouse *psmouse,
959 const struct synaptics_hw_state *hw)
960{
961 struct input_dev *dev = psmouse->dev;
962 struct synaptics_data *priv = psmouse->private;
963
964 input_report_key(dev, BTN_LEFT, hw->left);
965 input_report_key(dev, BTN_RIGHT, hw->right);
966
967 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
968 input_report_key(dev, BTN_MIDDLE, hw->middle);
969
970 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
971 input_report_key(dev, BTN_FORWARD, hw->up);
972 input_report_key(dev, BTN_BACK, hw->down);
973 }
974
975 synaptics_report_ext_buttons(psmouse, hw);
976}
977
978static void synaptics_report_mt_data(struct psmouse *psmouse,
979 const struct synaptics_hw_state *sgm,
980 int num_fingers)
981{
982 struct input_dev *dev = psmouse->dev;
983 struct synaptics_data *priv = psmouse->private;
984 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
985 struct input_mt_pos pos[2];
986 int slot[2], nsemi, i;
987
988 nsemi = clamp_val(num_fingers, 0, 2);
989
990 for (i = 0; i < nsemi; i++) {
991 pos[i].x = hw[i]->x;
992 pos[i].y = synaptics_invert_y(hw[i]->y);
993 }
994
995 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
996
997 for (i = 0; i < nsemi; i++) {
998 input_mt_slot(dev, slot[i]);
999 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1000 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1001 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1002 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1003 }
1004
1005 input_mt_drop_unused(dev);
1006
1007 /* Don't use active slot count to generate BTN_TOOL events. */
1008 input_mt_report_pointer_emulation(dev, false);
1009
1010 /* Send the number of fingers reported by touchpad itself. */
1011 input_mt_report_finger_count(dev, num_fingers);
1012
1013 synaptics_report_buttons(psmouse, sgm);
1014
1015 input_sync(dev);
1016}
1017
1018static void synaptics_image_sensor_process(struct psmouse *psmouse,
1019 struct synaptics_hw_state *sgm)
1020{
1021 struct synaptics_data *priv = psmouse->private;
1022 int num_fingers;
1023
1024 /*
1025 * Update mt_state using the new finger count and current mt_state.
1026 */
1027 if (sgm->z == 0)
1028 num_fingers = 0;
1029 else if (sgm->w >= 4)
1030 num_fingers = 1;
1031 else if (sgm->w == 0)
1032 num_fingers = 2;
1033 else if (sgm->w == 1)
1034 num_fingers = priv->agm_count ? priv->agm_count : 3;
1035 else
1036 num_fingers = 4;
1037
1038 /* Send resulting input events to user space */
1039 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1040}
1041
1042static bool synaptics_has_multifinger(struct synaptics_data *priv)
1043{
1044 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1045 return true;
1046
1047 /* Advanced gesture mode also sends multi finger data */
1048 return synaptics_has_agm(priv);
1049}
1050
1051/*
1052 * called for each full received packet from the touchpad
1053 */
1054static void synaptics_process_packet(struct psmouse *psmouse)
1055{
1056 struct input_dev *dev = psmouse->dev;
1057 struct synaptics_data *priv = psmouse->private;
1058 struct synaptics_device_info *info = &priv->info;
1059 struct synaptics_hw_state hw;
1060 int num_fingers;
1061 int finger_width;
1062
1063 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1064 return;
1065
1066 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1067 synaptics_image_sensor_process(psmouse, &hw);
1068 return;
1069 }
1070
1071 if (hw.scroll) {
1072 priv->scroll += hw.scroll;
1073
1074 while (priv->scroll >= 4) {
1075 input_report_key(dev, BTN_BACK, !hw.down);
1076 input_sync(dev);
1077 input_report_key(dev, BTN_BACK, hw.down);
1078 input_sync(dev);
1079 priv->scroll -= 4;
1080 }
1081 while (priv->scroll <= -4) {
1082 input_report_key(dev, BTN_FORWARD, !hw.up);
1083 input_sync(dev);
1084 input_report_key(dev, BTN_FORWARD, hw.up);
1085 input_sync(dev);
1086 priv->scroll += 4;
1087 }
1088 return;
1089 }
1090
1091 if (hw.z > 0 && hw.x > 1) {
1092 num_fingers = 1;
1093 finger_width = 5;
1094 if (SYN_CAP_EXTENDED(info->capabilities)) {
1095 switch (hw.w) {
1096 case 0 ... 1:
1097 if (synaptics_has_multifinger(priv))
1098 num_fingers = hw.w + 2;
1099 break;
1100 case 2:
1101 if (SYN_MODEL_PEN(info->model_id))
1102 ; /* Nothing, treat a pen as a single finger */
1103 break;
1104 case 4 ... 15:
1105 if (SYN_CAP_PALMDETECT(info->capabilities))
1106 finger_width = hw.w;
1107 break;
1108 }
1109 }
1110 } else {
1111 num_fingers = 0;
1112 finger_width = 0;
1113 }
1114
1115 if (cr48_profile_sensor) {
1116 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1117 return;
1118 }
1119
1120 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1121 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1122 num_fingers);
1123
1124 /* Post events
1125 * BTN_TOUCH has to be first as mousedev relies on it when doing
1126 * absolute -> relative conversion
1127 */
1128 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1129 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1130
1131 if (num_fingers > 0) {
1132 input_report_abs(dev, ABS_X, hw.x);
1133 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1134 }
1135 input_report_abs(dev, ABS_PRESSURE, hw.z);
1136
1137 if (SYN_CAP_PALMDETECT(info->capabilities))
1138 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1139
1140 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1141 if (synaptics_has_multifinger(priv)) {
1142 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1143 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1144 }
1145
1146 synaptics_report_buttons(psmouse, &hw);
1147
1148 input_sync(dev);
1149}
1150
1151static bool synaptics_validate_byte(struct psmouse *psmouse,
1152 int idx, enum synaptics_pkt_type pkt_type)
1153{
1154 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1155 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1156 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1157 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1158 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1159 const u8 *packet = psmouse->packet;
1160
1161 if (idx < 0 || idx > 4)
1162 return false;
1163
1164 switch (pkt_type) {
1165
1166 case SYN_NEWABS:
1167 case SYN_NEWABS_RELAXED:
1168 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1169
1170 case SYN_NEWABS_STRICT:
1171 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1172
1173 case SYN_OLDABS:
1174 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1175
1176 default:
1177 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1178 return false;
1179 }
1180}
1181
1182static enum synaptics_pkt_type
1183synaptics_detect_pkt_type(struct psmouse *psmouse)
1184{
1185 int i;
1186
1187 for (i = 0; i < 5; i++) {
1188 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1189 psmouse_info(psmouse, "using relaxed packet validation\n");
1190 return SYN_NEWABS_RELAXED;
1191 }
1192 }
1193
1194 return SYN_NEWABS_STRICT;
1195}
1196
1197static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1198{
1199 struct synaptics_data *priv = psmouse->private;
1200
1201 if (psmouse->pktcnt >= 6) { /* Full packet received */
1202 if (unlikely(priv->pkt_type == SYN_NEWABS))
1203 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1204
1205 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1206 synaptics_is_pt_packet(psmouse->packet)) {
1207 if (priv->pt_port)
1208 synaptics_pass_pt_packet(priv->pt_port,
1209 psmouse->packet);
1210 } else
1211 synaptics_process_packet(psmouse);
1212
1213 return PSMOUSE_FULL_PACKET;
1214 }
1215
1216 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1217 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1218}
1219
1220/*****************************************************************************
1221 * Driver initialization/cleanup functions
1222 ****************************************************************************/
1223static void set_abs_position_params(struct input_dev *dev,
1224 struct synaptics_device_info *info,
1225 int x_code, int y_code)
1226{
1227 int x_min = info->x_min ?: XMIN_NOMINAL;
1228 int x_max = info->x_max ?: XMAX_NOMINAL;
1229 int y_min = info->y_min ?: YMIN_NOMINAL;
1230 int y_max = info->y_max ?: YMAX_NOMINAL;
1231 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1232 SYN_REDUCED_FILTER_FUZZ : 0;
1233
1234 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1235 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1236 input_abs_set_res(dev, x_code, info->x_res);
1237 input_abs_set_res(dev, y_code, info->y_res);
1238}
1239
1240static int set_input_params(struct psmouse *psmouse,
1241 struct synaptics_data *priv)
1242{
1243 struct input_dev *dev = psmouse->dev;
1244 struct synaptics_device_info *info = &priv->info;
1245 int i;
1246 int error;
1247
1248 /* Reset default psmouse capabilities */
1249 __clear_bit(EV_REL, dev->evbit);
1250 bitmap_zero(dev->relbit, REL_CNT);
1251 bitmap_zero(dev->keybit, KEY_CNT);
1252
1253 /* Things that apply to both modes */
1254 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1255
1256 input_set_capability(dev, EV_KEY, BTN_LEFT);
1257
1258 /* Clickpads report only left button */
1259 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1260 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1261 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1262 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1263 }
1264
1265 if (!priv->absolute_mode) {
1266 /* Relative mode */
1267 input_set_capability(dev, EV_REL, REL_X);
1268 input_set_capability(dev, EV_REL, REL_Y);
1269 return 0;
1270 }
1271
1272 /* Absolute mode */
1273 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1274 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1275
1276 if (cr48_profile_sensor)
1277 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1278
1279 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1280 set_abs_position_params(dev, info,
1281 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1282 /* Image sensors can report per-contact pressure */
1283 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1284
1285 error = input_mt_init_slots(dev, 2,
1286 INPUT_MT_POINTER | INPUT_MT_TRACK);
1287 if (error)
1288 return error;
1289
1290 /* Image sensors can signal 4 and 5 finger clicks */
1291 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1292 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1293 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1294 set_abs_position_params(dev, info,
1295 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1296 /*
1297 * Profile sensor in CR-48 tracks contacts reasonably well,
1298 * other non-image sensors with AGM use semi-mt.
1299 */
1300 error = input_mt_init_slots(dev, 2,
1301 INPUT_MT_POINTER |
1302 (cr48_profile_sensor ?
1303 INPUT_MT_TRACK :
1304 INPUT_MT_SEMI_MT));
1305 if (error)
1306 return error;
1307
1308 /*
1309 * For semi-mt devices we send ABS_X/Y ourselves instead of
1310 * input_mt_report_pointer_emulation. But
1311 * input_mt_init_slots() resets the fuzz to 0, leading to a
1312 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1313 * position. Let's re-initialize ABS_X/Y here.
1314 */
1315 if (!cr48_profile_sensor)
1316 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1317 }
1318
1319 if (SYN_CAP_PALMDETECT(info->capabilities))
1320 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1321
1322 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1323 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1324
1325 if (synaptics_has_multifinger(priv)) {
1326 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1327 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1328 }
1329
1330 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1331 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1332 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1333 input_set_capability(dev, EV_KEY, BTN_BACK);
1334 }
1335
1336 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1337 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1338 input_set_capability(dev, EV_KEY, BTN_0 + i);
1339
1340 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1341 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1342 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1343 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1344 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1345 }
1346
1347 return 0;
1348}
1349
1350static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1351 void *data, char *buf)
1352{
1353 struct synaptics_data *priv = psmouse->private;
1354
1355 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1356}
1357
1358static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1359 void *data, const char *buf,
1360 size_t len)
1361{
1362 struct synaptics_data *priv = psmouse->private;
1363 unsigned int value;
1364 int err;
1365
1366 err = kstrtouint(buf, 10, &value);
1367 if (err)
1368 return err;
1369
1370 if (value > 1)
1371 return -EINVAL;
1372
1373 if (value == priv->disable_gesture)
1374 return len;
1375
1376 priv->disable_gesture = value;
1377 if (value)
1378 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1379 else
1380 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1381
1382 if (synaptics_mode_cmd(psmouse, priv->mode))
1383 return -EIO;
1384
1385 return len;
1386}
1387
1388PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1389 synaptics_show_disable_gesture,
1390 synaptics_set_disable_gesture);
1391
1392static void synaptics_disconnect(struct psmouse *psmouse)
1393{
1394 struct synaptics_data *priv = psmouse->private;
1395
1396 /*
1397 * We might have left a breadcrumb when trying to
1398 * set up SMbus companion.
1399 */
1400 psmouse_smbus_cleanup(psmouse);
1401
1402 if (!priv->absolute_mode &&
1403 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1404 device_remove_file(&psmouse->ps2dev.serio->dev,
1405 &psmouse_attr_disable_gesture.dattr);
1406
1407 synaptics_reset(psmouse);
1408 kfree(priv);
1409 psmouse->private = NULL;
1410}
1411
1412static int synaptics_reconnect(struct psmouse *psmouse)
1413{
1414 struct synaptics_data *priv = psmouse->private;
1415 struct synaptics_device_info info;
1416 u8 param[2];
1417 int retry = 0;
1418 int error;
1419
1420 do {
1421 psmouse_reset(psmouse);
1422 if (retry) {
1423 /*
1424 * On some boxes, right after resuming, the touchpad
1425 * needs some time to finish initializing (I assume
1426 * it needs time to calibrate) and start responding
1427 * to Synaptics-specific queries, so let's wait a
1428 * bit.
1429 */
1430 ssleep(1);
1431 }
1432 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1433 error = synaptics_detect(psmouse, 0);
1434 } while (error && ++retry < 3);
1435
1436 if (error)
1437 return error;
1438
1439 if (retry > 1)
1440 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1441
1442 error = synaptics_query_hardware(psmouse, &info);
1443 if (error) {
1444 psmouse_err(psmouse, "Unable to query device.\n");
1445 return error;
1446 }
1447
1448 error = synaptics_set_mode(psmouse);
1449 if (error) {
1450 psmouse_err(psmouse, "Unable to initialize device.\n");
1451 return error;
1452 }
1453
1454 if (info.identity != priv->info.identity ||
1455 info.model_id != priv->info.model_id ||
1456 info.capabilities != priv->info.capabilities ||
1457 info.ext_cap != priv->info.ext_cap) {
1458 psmouse_err(psmouse,
1459 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1460 priv->info.identity, info.identity,
1461 priv->info.model_id, info.model_id,
1462 priv->info.capabilities, info.capabilities,
1463 priv->info.ext_cap, info.ext_cap);
1464 return -ENXIO;
1465 }
1466
1467 return 0;
1468}
1469
1470static bool impaired_toshiba_kbc;
1471
1472static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1473#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1474 {
1475 /* Toshiba Satellite */
1476 .matches = {
1477 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1478 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1479 },
1480 },
1481 {
1482 /* Toshiba Dynabook */
1483 .matches = {
1484 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1485 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1486 },
1487 },
1488 {
1489 /* Toshiba Portege M300 */
1490 .matches = {
1491 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1492 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1493 },
1494
1495 },
1496 {
1497 /* Toshiba Portege M300 */
1498 .matches = {
1499 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1500 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1501 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1502 },
1503
1504 },
1505#endif
1506 { }
1507};
1508
1509static bool broken_olpc_ec;
1510
1511static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1512#if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1513 {
1514 /* OLPC XO-1 or XO-1.5 */
1515 .matches = {
1516 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1517 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1518 },
1519 },
1520#endif
1521 { }
1522};
1523
1524static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1525#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1526 {
1527 /* Cr-48 Chromebook (Codename Mario) */
1528 .matches = {
1529 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1530 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1531 },
1532 },
1533#endif
1534 { }
1535};
1536
1537void __init synaptics_module_init(void)
1538{
1539 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1540 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1541 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1542}
1543
1544static int synaptics_init_ps2(struct psmouse *psmouse,
1545 struct synaptics_device_info *info,
1546 bool absolute_mode)
1547{
1548 struct synaptics_data *priv;
1549 int err;
1550
1551 synaptics_apply_quirks(psmouse, info);
1552
1553 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1554 if (!priv)
1555 return -ENOMEM;
1556
1557 priv->info = *info;
1558 priv->absolute_mode = absolute_mode;
1559 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1560 priv->disable_gesture = true;
1561
1562 /*
1563 * Unfortunately ForcePad capability is not exported over PS/2,
1564 * so we have to resort to checking PNP IDs.
1565 */
1566 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1567
1568 err = synaptics_set_mode(psmouse);
1569 if (err) {
1570 psmouse_err(psmouse, "Unable to initialize device.\n");
1571 goto init_fail;
1572 }
1573
1574 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1575 SYN_NEWABS : SYN_OLDABS;
1576
1577 psmouse_info(psmouse,
1578 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1579 SYN_ID_MODEL(info->identity),
1580 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1581 info->model_id,
1582 info->capabilities, info->ext_cap, info->ext_cap_0c,
1583 info->ext_cap_10, info->board_id, info->firmware_id);
1584
1585 err = set_input_params(psmouse, priv);
1586 if (err) {
1587 psmouse_err(psmouse,
1588 "failed to set up capabilities: %d\n", err);
1589 goto init_fail;
1590 }
1591
1592 /*
1593 * Encode touchpad model so that it can be used to set
1594 * input device->id.version and be visible to userspace.
1595 * Because version is __u16 we have to drop something.
1596 * Hardware info bits seem to be good candidates as they
1597 * are documented to be for Synaptics corp. internal use.
1598 */
1599 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1600 (info->model_id & 0x000000ff);
1601
1602 if (absolute_mode) {
1603 psmouse->protocol_handler = synaptics_process_byte;
1604 psmouse->pktsize = 6;
1605 } else {
1606 /* Relative mode follows standard PS/2 mouse protocol */
1607 psmouse->protocol_handler = psmouse_process_byte;
1608 psmouse->pktsize = 3;
1609 }
1610
1611 psmouse->set_rate = synaptics_set_rate;
1612 psmouse->disconnect = synaptics_disconnect;
1613 psmouse->reconnect = synaptics_reconnect;
1614 psmouse->cleanup = synaptics_reset;
1615 /* Synaptics can usually stay in sync without extra help */
1616 psmouse->resync_time = 0;
1617
1618 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1619 synaptics_pt_create(psmouse);
1620
1621 /*
1622 * Toshiba's KBC seems to have trouble handling data from
1623 * Synaptics at full rate. Switch to a lower rate (roughly
1624 * the same rate as a standard PS/2 mouse).
1625 */
1626 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1627 psmouse_info(psmouse,
1628 "Toshiba %s detected, limiting rate to 40pps.\n",
1629 dmi_get_system_info(DMI_PRODUCT_NAME));
1630 psmouse->rate = 40;
1631 }
1632
1633 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1634 err = device_create_file(&psmouse->ps2dev.serio->dev,
1635 &psmouse_attr_disable_gesture.dattr);
1636 if (err) {
1637 psmouse_err(psmouse,
1638 "Failed to create disable_gesture attribute (%d)",
1639 err);
1640 goto init_fail;
1641 }
1642 }
1643
1644 return 0;
1645
1646 init_fail:
1647 kfree(priv);
1648 return err;
1649}
1650
1651static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1652{
1653 struct synaptics_device_info info;
1654 int error;
1655
1656 psmouse_reset(psmouse);
1657
1658 error = synaptics_query_hardware(psmouse, &info);
1659 if (error) {
1660 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1661 return error;
1662 }
1663
1664 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1665}
1666
1667int synaptics_init_absolute(struct psmouse *psmouse)
1668{
1669 return __synaptics_init(psmouse, true);
1670}
1671
1672int synaptics_init_relative(struct psmouse *psmouse)
1673{
1674 return __synaptics_init(psmouse, false);
1675}
1676
1677static int synaptics_setup_ps2(struct psmouse *psmouse,
1678 struct synaptics_device_info *info)
1679{
1680 bool absolute_mode = true;
1681 int error;
1682
1683 /*
1684 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1685 * packet spew overloads the EC such that key presses on the keyboard
1686 * are missed. Given that, don't even attempt to use Absolute mode.
1687 * Relative mode seems to work just fine.
1688 */
1689 if (broken_olpc_ec) {
1690 psmouse_info(psmouse,
1691 "OLPC XO detected, forcing relative protocol.\n");
1692 absolute_mode = false;
1693 }
1694
1695 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1696 if (error)
1697 return error;
1698
1699 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1700}
1701
1702#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1703
1704void __init synaptics_module_init(void)
1705{
1706}
1707
1708static int __maybe_unused
1709synaptics_setup_ps2(struct psmouse *psmouse,
1710 struct synaptics_device_info *info)
1711{
1712 return -ENOSYS;
1713}
1714
1715#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1716
1717#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1718
1719/*
1720 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1721 * provides a better bandwidth and allow a better control of the touchpads.
1722 * This is used to decide if we need to use this bus or not.
1723 */
1724enum {
1725 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1726 SYNAPTICS_INTERTOUCH_OFF,
1727 SYNAPTICS_INTERTOUCH_ON,
1728};
1729
1730static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1731 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1732module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1733MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1734
1735static int synaptics_create_intertouch(struct psmouse *psmouse,
1736 struct synaptics_device_info *info,
1737 bool leave_breadcrumbs)
1738{
1739 bool topbuttonpad =
1740 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1741 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1742 const struct rmi_device_platform_data pdata = {
1743 .sensor_pdata = {
1744 .sensor_type = rmi_sensor_touchpad,
1745 .axis_align.flip_y = true,
1746 .kernel_tracking = false,
1747 .topbuttonpad = topbuttonpad,
1748 },
1749 .f30_data = {
1750 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1751 .trackstick_buttons =
1752 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1753 },
1754 };
1755 const struct i2c_board_info intertouch_board = {
1756 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1757 .flags = I2C_CLIENT_HOST_NOTIFY,
1758 };
1759
1760 return psmouse_smbus_init(psmouse, &intertouch_board,
1761 &pdata, sizeof(pdata), true,
1762 leave_breadcrumbs);
1763}
1764
1765/**
1766 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1767 * and decides to instantiate a SMBus InterTouch device.
1768 */
1769static int synaptics_setup_intertouch(struct psmouse *psmouse,
1770 struct synaptics_device_info *info,
1771 bool leave_breadcrumbs)
1772{
1773 int error;
1774
1775 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1776 return -ENXIO;
1777
1778 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1779 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1780 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1781
1782 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1783 psmouse_info(psmouse,
1784 "Your touchpad (%s) says it can support a different bus. "
1785 "If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n",
1786 psmouse->ps2dev.serio->firmware_id);
1787
1788 return -ENXIO;
1789 }
1790 }
1791
1792 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1793
1794 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1795 if (error) {
1796 if (error == -EAGAIN)
1797 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1798 else
1799 psmouse_err(psmouse, "unable to create intertouch device\n");
1800
1801 return error;
1802 }
1803
1804 return 0;
1805}
1806
1807int synaptics_init_smbus(struct psmouse *psmouse)
1808{
1809 struct synaptics_device_info info;
1810 int error;
1811
1812 psmouse_reset(psmouse);
1813
1814 error = synaptics_query_hardware(psmouse, &info);
1815 if (error) {
1816 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1817 return error;
1818 }
1819
1820 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1821 return -ENXIO;
1822
1823 return synaptics_create_intertouch(psmouse, &info, false);
1824}
1825
1826#else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1827
1828static int __maybe_unused
1829synaptics_setup_intertouch(struct psmouse *psmouse,
1830 struct synaptics_device_info *info,
1831 bool leave_breadcrumbs)
1832{
1833 return -ENOSYS;
1834}
1835
1836int synaptics_init_smbus(struct psmouse *psmouse)
1837{
1838 return -ENOSYS;
1839}
1840
1841#endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1842
1843#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1844 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1845
1846int synaptics_init(struct psmouse *psmouse)
1847{
1848 struct synaptics_device_info info;
1849 int error;
1850 int retval;
1851
1852 psmouse_reset(psmouse);
1853
1854 error = synaptics_query_hardware(psmouse, &info);
1855 if (error) {
1856 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1857 return error;
1858 }
1859
1860 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1861 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1862 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1863 /* Forcepads need F21, which is not ready */
1864 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1865 psmouse_warn(psmouse,
1866 "The touchpad can support a better bus than the too old PS/2 protocol. "
1867 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1868 }
1869
1870 error = synaptics_setup_intertouch(psmouse, &info, true);
1871 if (!error)
1872 return PSMOUSE_SYNAPTICS_SMBUS;
1873 }
1874
1875 retval = synaptics_setup_ps2(psmouse, &info);
1876 if (retval < 0) {
1877 /*
1878 * Not using any flavor of Synaptics support, so clean up
1879 * SMbus breadcrumbs, if any.
1880 */
1881 psmouse_smbus_cleanup(psmouse);
1882 }
1883
1884 return retval;
1885}
1886
1887#else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1888
1889int synaptics_init(struct psmouse *psmouse)
1890{
1891 return -ENOSYS;
1892}
1893
1894#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */