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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/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/slab.h>
33 #include "psmouse.h"
34 #include "synaptics.h"
35
36 /*
37 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
38 * section 2.3.2, which says that they should be valid regardless of the
39 * actual size of the sensor.
40 * Note that newer firmware allows querying device for maximum useable
41 * coordinates.
42 */
43 #define XMIN 0
44 #define XMAX 6143
45 #define YMIN 0
46 #define YMAX 6143
47 #define XMIN_NOMINAL 1472
48 #define XMAX_NOMINAL 5472
49 #define YMIN_NOMINAL 1408
50 #define YMAX_NOMINAL 4448
51
52 /* Size in bits of absolute position values reported by the hardware */
53 #define ABS_POS_BITS 13
54
55 /*
56 * These values should represent the absolute maximum value that will
57 * be reported for a positive position value. Some Synaptics firmware
58 * uses this value to indicate a finger near the edge of the touchpad
59 * whose precise position cannot be determined.
60 *
61 * At least one touchpad is known to report positions in excess of this
62 * value which are actually negative values truncated to the 13-bit
63 * reporting range. These values have never been observed to be lower
64 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
65 * negative and any other value as positive.
66 */
67 #define X_MAX_POSITIVE 8176
68 #define Y_MAX_POSITIVE 8176
69
70 /* maximum ABS_MT_POSITION displacement (in mm) */
71 #define DMAX 10
72
73 /*****************************************************************************
74 * Stuff we need even when we do not want native Synaptics support
75 ****************************************************************************/
76
77 /*
78 * Set the synaptics touchpad mode byte by special commands
79 */
80 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
81 {
82 unsigned char param[1];
83
84 if (psmouse_sliced_command(psmouse, mode))
85 return -1;
86 param[0] = SYN_PS_SET_MODE2;
87 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
88 return -1;
89 return 0;
90 }
91
92 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
93 {
94 struct ps2dev *ps2dev = &psmouse->ps2dev;
95 unsigned char param[4];
96
97 param[0] = 0;
98
99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
100 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
101 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
102 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
103 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
104
105 if (param[1] != 0x47)
106 return -ENODEV;
107
108 if (set_properties) {
109 psmouse->vendor = "Synaptics";
110 psmouse->name = "TouchPad";
111 }
112
113 return 0;
114 }
115
116 void synaptics_reset(struct psmouse *psmouse)
117 {
118 /* reset touchpad back to relative mode, gestures enabled */
119 synaptics_mode_cmd(psmouse, 0);
120 }
121
122 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
123
124 static bool cr48_profile_sensor;
125
126 #define ANY_BOARD_ID 0
127 struct min_max_quirk {
128 const char * const *pnp_ids;
129 struct {
130 unsigned long int min, max;
131 } board_id;
132 int x_min, x_max, y_min, y_max;
133 };
134
135 static const struct min_max_quirk min_max_pnpid_table[] = {
136 {
137 (const char * const []){"LEN0033", NULL},
138 {ANY_BOARD_ID, ANY_BOARD_ID},
139 1024, 5052, 2258, 4832
140 },
141 {
142 (const char * const []){"LEN0042", NULL},
143 {ANY_BOARD_ID, ANY_BOARD_ID},
144 1232, 5710, 1156, 4696
145 },
146 {
147 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
148 "LEN0039", "LEN2002", "LEN2004",
149 NULL},
150 {ANY_BOARD_ID, 2961},
151 1024, 5112, 2024, 4832
152 },
153 {
154 (const char * const []){"LEN2000", NULL},
155 {ANY_BOARD_ID, ANY_BOARD_ID},
156 1024, 5113, 2021, 4832
157 },
158 {
159 (const char * const []){"LEN2001", NULL},
160 {ANY_BOARD_ID, ANY_BOARD_ID},
161 1024, 5022, 2508, 4832
162 },
163 {
164 (const char * const []){"LEN2006", NULL},
165 {2691, 2691},
166 1024, 5045, 2457, 4832
167 },
168 {
169 (const char * const []){"LEN2006", NULL},
170 {ANY_BOARD_ID, ANY_BOARD_ID},
171 1264, 5675, 1171, 4688
172 },
173 { }
174 };
175
176 /* This list has been kindly provided by Synaptics. */
177 static const char * const topbuttonpad_pnp_ids[] = {
178 "LEN0017",
179 "LEN0018",
180 "LEN0019",
181 "LEN0023",
182 "LEN002A",
183 "LEN002B",
184 "LEN002C",
185 "LEN002D",
186 "LEN002E",
187 "LEN0033", /* Helix */
188 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
189 "LEN0035", /* X240 */
190 "LEN0036", /* T440 */
191 "LEN0037", /* X1 Carbon 2nd */
192 "LEN0038",
193 "LEN0039", /* T440s */
194 "LEN0041",
195 "LEN0042", /* Yoga */
196 "LEN0045",
197 "LEN0047",
198 "LEN0049",
199 "LEN2000", /* S540 */
200 "LEN2001", /* Edge E431 */
201 "LEN2002", /* Edge E531 */
202 "LEN2003",
203 "LEN2004", /* L440 */
204 "LEN2005",
205 "LEN2006", /* Edge E440/E540 */
206 "LEN2007",
207 "LEN2008",
208 "LEN2009",
209 "LEN200A",
210 "LEN200B",
211 NULL
212 };
213
214 /* This list has been kindly provided by Synaptics. */
215 static const char * const forcepad_pnp_ids[] = {
216 "SYN300D",
217 "SYN3014",
218 NULL
219 };
220
221 /*****************************************************************************
222 * Synaptics communications functions
223 ****************************************************************************/
224
225 /*
226 * Synaptics touchpads report the y coordinate from bottom to top, which is
227 * opposite from what userspace expects.
228 * This function is used to invert y before reporting.
229 */
230 static int synaptics_invert_y(int y)
231 {
232 return YMAX_NOMINAL + YMIN_NOMINAL - y;
233 }
234
235 /*
236 * Send a command to the synpatics touchpad by special commands
237 */
238 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
239 {
240 if (psmouse_sliced_command(psmouse, c))
241 return -1;
242 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
243 return -1;
244 return 0;
245 }
246
247 /*
248 * Read the model-id bytes from the touchpad
249 * see also SYN_MODEL_* macros
250 */
251 static int synaptics_model_id(struct psmouse *psmouse)
252 {
253 struct synaptics_data *priv = psmouse->private;
254 unsigned char mi[3];
255
256 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
257 return -1;
258 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
259 return 0;
260 }
261
262 static int synaptics_more_extended_queries(struct psmouse *psmouse)
263 {
264 struct synaptics_data *priv = psmouse->private;
265 unsigned char buf[3];
266
267 if (synaptics_send_cmd(psmouse, SYN_QUE_MEXT_CAPAB_10, buf))
268 return -1;
269
270 priv->ext_cap_10 = (buf[0]<<16) | (buf[1]<<8) | buf[2];
271
272 return 0;
273 }
274
275 /*
276 * Read the board id and the "More Extended Queries" from the touchpad
277 * The board id is encoded in the "QUERY MODES" response
278 */
279 static int synaptics_query_modes(struct psmouse *psmouse)
280 {
281 struct synaptics_data *priv = psmouse->private;
282 unsigned char bid[3];
283
284 /* firmwares prior 7.5 have no board_id encoded */
285 if (SYN_ID_FULL(priv->identity) < 0x705)
286 return 0;
287
288 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
289 return -1;
290 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
291
292 if (SYN_MEXT_CAP_BIT(bid[0]))
293 return synaptics_more_extended_queries(psmouse);
294
295 return 0;
296 }
297
298 /*
299 * Read the firmware id from the touchpad
300 */
301 static int synaptics_firmware_id(struct psmouse *psmouse)
302 {
303 struct synaptics_data *priv = psmouse->private;
304 unsigned char fwid[3];
305
306 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
307 return -1;
308 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
309 return 0;
310 }
311
312 /*
313 * Read the capability-bits from the touchpad
314 * see also the SYN_CAP_* macros
315 */
316 static int synaptics_capability(struct psmouse *psmouse)
317 {
318 struct synaptics_data *priv = psmouse->private;
319 unsigned char cap[3];
320
321 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
322 return -1;
323 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
324 priv->ext_cap = priv->ext_cap_0c = 0;
325
326 /*
327 * Older firmwares had submodel ID fixed to 0x47
328 */
329 if (SYN_ID_FULL(priv->identity) < 0x705 &&
330 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
331 return -1;
332 }
333
334 /*
335 * Unless capExtended is set the rest of the flags should be ignored
336 */
337 if (!SYN_CAP_EXTENDED(priv->capabilities))
338 priv->capabilities = 0;
339
340 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
341 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
342 psmouse_warn(psmouse,
343 "device claims to have extended capabilities, but I'm not able to read them.\n");
344 } else {
345 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
346
347 /*
348 * if nExtBtn is greater than 8 it should be considered
349 * invalid and treated as 0
350 */
351 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
352 priv->ext_cap &= 0xff0fff;
353 }
354 }
355
356 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
357 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
358 psmouse_warn(psmouse,
359 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
360 } else {
361 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
362 }
363 }
364
365 return 0;
366 }
367
368 /*
369 * Identify Touchpad
370 * See also the SYN_ID_* macros
371 */
372 static int synaptics_identify(struct psmouse *psmouse)
373 {
374 struct synaptics_data *priv = psmouse->private;
375 unsigned char id[3];
376
377 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
378 return -1;
379 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
380 if (SYN_ID_IS_SYNAPTICS(priv->identity))
381 return 0;
382 return -1;
383 }
384
385 /*
386 * Read touchpad resolution and maximum reported coordinates
387 * Resolution is left zero if touchpad does not support the query
388 */
389
390 static int synaptics_resolution(struct psmouse *psmouse)
391 {
392 struct synaptics_data *priv = psmouse->private;
393 unsigned char resp[3];
394
395 if (SYN_ID_MAJOR(priv->identity) < 4)
396 return 0;
397
398 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
399 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
400 priv->x_res = resp[0]; /* x resolution in units/mm */
401 priv->y_res = resp[2]; /* y resolution in units/mm */
402 }
403 }
404
405 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
406 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
407 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
408 psmouse_warn(psmouse,
409 "device claims to have max coordinates query, but I'm not able to read it.\n");
410 } else {
411 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
412 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
413 psmouse_info(psmouse,
414 "queried max coordinates: x [..%d], y [..%d]\n",
415 priv->x_max, priv->y_max);
416 }
417 }
418
419 if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) &&
420 (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 ||
421 /*
422 * Firmware v8.1 does not report proper number of extended
423 * capabilities, but has been proven to report correct min
424 * coordinates.
425 */
426 SYN_ID_FULL(priv->identity) == 0x801)) {
427 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
428 psmouse_warn(psmouse,
429 "device claims to have min coordinates query, but I'm not able to read it.\n");
430 } else {
431 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
432 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
433 psmouse_info(psmouse,
434 "queried min coordinates: x [%d..], y [%d..]\n",
435 priv->x_min, priv->y_min);
436 }
437 }
438
439 return 0;
440 }
441
442 /*
443 * Apply quirk(s) if the hardware matches
444 */
445
446 static void synaptics_apply_quirks(struct psmouse *psmouse)
447 {
448 struct synaptics_data *priv = psmouse->private;
449 int i;
450
451 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
452 if (!psmouse_matches_pnp_id(psmouse,
453 min_max_pnpid_table[i].pnp_ids))
454 continue;
455
456 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
457 priv->board_id < min_max_pnpid_table[i].board_id.min)
458 continue;
459
460 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
461 priv->board_id > min_max_pnpid_table[i].board_id.max)
462 continue;
463
464 priv->x_min = min_max_pnpid_table[i].x_min;
465 priv->x_max = min_max_pnpid_table[i].x_max;
466 priv->y_min = min_max_pnpid_table[i].y_min;
467 priv->y_max = min_max_pnpid_table[i].y_max;
468 psmouse_info(psmouse,
469 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
470 priv->x_min, priv->x_max,
471 priv->y_min, priv->y_max);
472 break;
473 }
474 }
475
476 static int synaptics_query_hardware(struct psmouse *psmouse)
477 {
478 if (synaptics_identify(psmouse))
479 return -1;
480 if (synaptics_model_id(psmouse))
481 return -1;
482 if (synaptics_firmware_id(psmouse))
483 return -1;
484 if (synaptics_query_modes(psmouse))
485 return -1;
486 if (synaptics_capability(psmouse))
487 return -1;
488 if (synaptics_resolution(psmouse))
489 return -1;
490
491 synaptics_apply_quirks(psmouse);
492
493 return 0;
494 }
495
496 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
497 {
498 static unsigned char param = 0xc8;
499 struct synaptics_data *priv = psmouse->private;
500
501 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
502 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
503 return 0;
504
505 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
506 return -1;
507
508 if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
509 return -1;
510
511 /* Advanced gesture mode also sends multi finger data */
512 priv->capabilities |= BIT(1);
513
514 return 0;
515 }
516
517 static int synaptics_set_mode(struct psmouse *psmouse)
518 {
519 struct synaptics_data *priv = psmouse->private;
520
521 priv->mode = 0;
522 if (priv->absolute_mode)
523 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
524 if (priv->disable_gesture)
525 priv->mode |= SYN_BIT_DISABLE_GESTURE;
526 if (psmouse->rate >= 80)
527 priv->mode |= SYN_BIT_HIGH_RATE;
528 if (SYN_CAP_EXTENDED(priv->capabilities))
529 priv->mode |= SYN_BIT_W_MODE;
530
531 if (synaptics_mode_cmd(psmouse, priv->mode))
532 return -1;
533
534 if (priv->absolute_mode &&
535 synaptics_set_advanced_gesture_mode(psmouse)) {
536 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
537 return -1;
538 }
539
540 return 0;
541 }
542
543 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
544 {
545 struct synaptics_data *priv = psmouse->private;
546
547 if (rate >= 80) {
548 priv->mode |= SYN_BIT_HIGH_RATE;
549 psmouse->rate = 80;
550 } else {
551 priv->mode &= ~SYN_BIT_HIGH_RATE;
552 psmouse->rate = 40;
553 }
554
555 synaptics_mode_cmd(psmouse, priv->mode);
556 }
557
558 /*****************************************************************************
559 * Synaptics pass-through PS/2 port support
560 ****************************************************************************/
561 static int synaptics_pt_write(struct serio *serio, unsigned char c)
562 {
563 struct psmouse *parent = serio_get_drvdata(serio->parent);
564 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
565
566 if (psmouse_sliced_command(parent, c))
567 return -1;
568 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
569 return -1;
570 return 0;
571 }
572
573 static int synaptics_pt_start(struct serio *serio)
574 {
575 struct psmouse *parent = serio_get_drvdata(serio->parent);
576 struct synaptics_data *priv = parent->private;
577
578 serio_pause_rx(parent->ps2dev.serio);
579 priv->pt_port = serio;
580 serio_continue_rx(parent->ps2dev.serio);
581
582 return 0;
583 }
584
585 static void synaptics_pt_stop(struct serio *serio)
586 {
587 struct psmouse *parent = serio_get_drvdata(serio->parent);
588 struct synaptics_data *priv = parent->private;
589
590 serio_pause_rx(parent->ps2dev.serio);
591 priv->pt_port = NULL;
592 serio_continue_rx(parent->ps2dev.serio);
593 }
594
595 static int synaptics_is_pt_packet(unsigned char *buf)
596 {
597 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
598 }
599
600 static void synaptics_pass_pt_packet(struct psmouse *psmouse,
601 struct serio *ptport,
602 unsigned char *packet)
603 {
604 struct synaptics_data *priv = psmouse->private;
605 struct psmouse *child = serio_get_drvdata(ptport);
606
607 if (child && child->state == PSMOUSE_ACTIVATED) {
608 serio_interrupt(ptport, packet[1] | priv->pt_buttons, 0);
609 serio_interrupt(ptport, packet[4], 0);
610 serio_interrupt(ptport, packet[5], 0);
611 if (child->pktsize == 4)
612 serio_interrupt(ptport, packet[2], 0);
613 } else {
614 serio_interrupt(ptport, packet[1], 0);
615 }
616 }
617
618 static void synaptics_pt_activate(struct psmouse *psmouse)
619 {
620 struct synaptics_data *priv = psmouse->private;
621 struct psmouse *child = serio_get_drvdata(priv->pt_port);
622
623 /* adjust the touchpad to child's choice of protocol */
624 if (child) {
625 if (child->pktsize == 4)
626 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
627 else
628 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
629
630 if (synaptics_mode_cmd(psmouse, priv->mode))
631 psmouse_warn(psmouse,
632 "failed to switch guest protocol\n");
633 }
634 }
635
636 static void synaptics_pt_create(struct psmouse *psmouse)
637 {
638 struct serio *serio;
639
640 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
641 if (!serio) {
642 psmouse_err(psmouse,
643 "not enough memory for pass-through port\n");
644 return;
645 }
646
647 serio->id.type = SERIO_PS_PSTHRU;
648 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
649 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
650 serio->write = synaptics_pt_write;
651 serio->start = synaptics_pt_start;
652 serio->stop = synaptics_pt_stop;
653 serio->parent = psmouse->ps2dev.serio;
654
655 psmouse->pt_activate = synaptics_pt_activate;
656
657 psmouse_info(psmouse, "serio: %s port at %s\n",
658 serio->name, psmouse->phys);
659 serio_register_port(serio);
660 }
661
662 /*****************************************************************************
663 * Functions to interpret the absolute mode packets
664 ****************************************************************************/
665
666 static void synaptics_parse_agm(const unsigned char buf[],
667 struct synaptics_data *priv,
668 struct synaptics_hw_state *hw)
669 {
670 struct synaptics_hw_state *agm = &priv->agm;
671 int agm_packet_type;
672
673 agm_packet_type = (buf[5] & 0x30) >> 4;
674 switch (agm_packet_type) {
675 case 1:
676 /* Gesture packet: (x, y, z) half resolution */
677 agm->w = hw->w;
678 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
679 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
680 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
681 break;
682
683 case 2:
684 /* AGM-CONTACT packet: we are only interested in the count */
685 priv->agm_count = buf[1];
686 break;
687
688 default:
689 break;
690 }
691 }
692
693 static void synaptics_parse_ext_buttons(const unsigned char buf[],
694 struct synaptics_data *priv,
695 struct synaptics_hw_state *hw)
696 {
697 unsigned int ext_bits =
698 (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
699 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
700
701 hw->ext_buttons = buf[4] & ext_mask;
702 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
703 }
704
705 static int synaptics_parse_hw_state(const unsigned char buf[],
706 struct synaptics_data *priv,
707 struct synaptics_hw_state *hw)
708 {
709 memset(hw, 0, sizeof(struct synaptics_hw_state));
710
711 if (SYN_MODEL_NEWABS(priv->model_id)) {
712 hw->w = (((buf[0] & 0x30) >> 2) |
713 ((buf[0] & 0x04) >> 1) |
714 ((buf[3] & 0x04) >> 2));
715
716 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
717 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
718 hw->w == 2) {
719 synaptics_parse_agm(buf, priv, hw);
720 return 1;
721 }
722
723 hw->x = (((buf[3] & 0x10) << 8) |
724 ((buf[1] & 0x0f) << 8) |
725 buf[4]);
726 hw->y = (((buf[3] & 0x20) << 7) |
727 ((buf[1] & 0xf0) << 4) |
728 buf[5]);
729 hw->z = buf[2];
730
731 hw->left = (buf[0] & 0x01) ? 1 : 0;
732 hw->right = (buf[0] & 0x02) ? 1 : 0;
733
734 if (priv->is_forcepad) {
735 /*
736 * ForcePads, like Clickpads, use middle button
737 * bits to report primary button clicks.
738 * Unfortunately they report primary button not
739 * only when user presses on the pad above certain
740 * threshold, but also when there are more than one
741 * finger on the touchpad, which interferes with
742 * out multi-finger gestures.
743 */
744 if (hw->z == 0) {
745 /* No contacts */
746 priv->press = priv->report_press = false;
747 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
748 /*
749 * Single-finger touch with pressure above
750 * the threshold. If pressure stays long
751 * enough, we'll start reporting primary
752 * button. We rely on the device continuing
753 * sending data even if finger does not
754 * move.
755 */
756 if (!priv->press) {
757 priv->press_start = jiffies;
758 priv->press = true;
759 } else if (time_after(jiffies,
760 priv->press_start +
761 msecs_to_jiffies(50))) {
762 priv->report_press = true;
763 }
764 } else {
765 priv->press = false;
766 }
767
768 hw->left = priv->report_press;
769
770 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
771 /*
772 * Clickpad's button is transmitted as middle button,
773 * however, since it is primary button, we will report
774 * it as BTN_LEFT.
775 */
776 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
777
778 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
779 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
780 if (hw->w == 2)
781 hw->scroll = (signed char)(buf[1]);
782 }
783
784 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
785 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
786 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
787 }
788
789 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 &&
790 ((buf[0] ^ buf[3]) & 0x02)) {
791 synaptics_parse_ext_buttons(buf, priv, hw);
792 }
793 } else {
794 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
795 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
796
797 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
798 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
799
800 hw->left = (buf[0] & 0x01) ? 1 : 0;
801 hw->right = (buf[0] & 0x02) ? 1 : 0;
802 }
803
804 /*
805 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
806 * is used by some firmware to indicate a finger at the edge of
807 * the touchpad whose precise position cannot be determined, so
808 * convert these values to the maximum axis value.
809 */
810 if (hw->x > X_MAX_POSITIVE)
811 hw->x -= 1 << ABS_POS_BITS;
812 else if (hw->x == X_MAX_POSITIVE)
813 hw->x = XMAX;
814
815 if (hw->y > Y_MAX_POSITIVE)
816 hw->y -= 1 << ABS_POS_BITS;
817 else if (hw->y == Y_MAX_POSITIVE)
818 hw->y = YMAX;
819
820 return 0;
821 }
822
823 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
824 bool active, int x, int y)
825 {
826 input_mt_slot(dev, slot);
827 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
828 if (active) {
829 input_report_abs(dev, ABS_MT_POSITION_X, x);
830 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
831 }
832 }
833
834 static void synaptics_report_semi_mt_data(struct input_dev *dev,
835 const struct synaptics_hw_state *a,
836 const struct synaptics_hw_state *b,
837 int num_fingers)
838 {
839 if (num_fingers >= 2) {
840 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
841 min(a->y, b->y));
842 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
843 max(a->y, b->y));
844 } else if (num_fingers == 1) {
845 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
846 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
847 } else {
848 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
849 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
850 }
851 }
852
853 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
854 const struct synaptics_hw_state *hw)
855 {
856 struct input_dev *dev = psmouse->dev;
857 struct synaptics_data *priv = psmouse->private;
858 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
859 char buf[6] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
860 int i;
861
862 if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
863 return;
864
865 /* Bug in FW 8.1, buttons are reported only when ExtBit is 1 */
866 if (SYN_ID_FULL(priv->identity) == 0x801 &&
867 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
868 return;
869
870 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) {
871 for (i = 0; i < ext_bits; i++) {
872 input_report_key(dev, BTN_0 + 2 * i,
873 hw->ext_buttons & (1 << i));
874 input_report_key(dev, BTN_1 + 2 * i,
875 hw->ext_buttons & (1 << (i + ext_bits)));
876 }
877 return;
878 }
879
880 /*
881 * This generation of touchpads has the trackstick buttons
882 * physically wired to the touchpad. Re-route them through
883 * the pass-through interface.
884 */
885 if (!priv->pt_port)
886 return;
887
888 /* The trackstick expects at most 3 buttons */
889 priv->pt_buttons = SYN_CAP_EXT_BUTTON_STICK_L(hw->ext_buttons) |
890 SYN_CAP_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
891 SYN_CAP_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
892
893 synaptics_pass_pt_packet(psmouse, priv->pt_port, buf);
894 }
895
896 static void synaptics_report_buttons(struct psmouse *psmouse,
897 const struct synaptics_hw_state *hw)
898 {
899 struct input_dev *dev = psmouse->dev;
900 struct synaptics_data *priv = psmouse->private;
901
902 input_report_key(dev, BTN_LEFT, hw->left);
903 input_report_key(dev, BTN_RIGHT, hw->right);
904
905 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
906 input_report_key(dev, BTN_MIDDLE, hw->middle);
907
908 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
909 input_report_key(dev, BTN_FORWARD, hw->up);
910 input_report_key(dev, BTN_BACK, hw->down);
911 }
912
913 synaptics_report_ext_buttons(psmouse, hw);
914 }
915
916 static void synaptics_report_mt_data(struct psmouse *psmouse,
917 const struct synaptics_hw_state *sgm,
918 int num_fingers)
919 {
920 struct input_dev *dev = psmouse->dev;
921 struct synaptics_data *priv = psmouse->private;
922 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
923 struct input_mt_pos pos[2];
924 int slot[2], nsemi, i;
925
926 nsemi = clamp_val(num_fingers, 0, 2);
927
928 for (i = 0; i < nsemi; i++) {
929 pos[i].x = hw[i]->x;
930 pos[i].y = synaptics_invert_y(hw[i]->y);
931 }
932
933 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->x_res);
934
935 for (i = 0; i < nsemi; i++) {
936 input_mt_slot(dev, slot[i]);
937 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
938 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
939 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
940 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
941 }
942
943 input_mt_drop_unused(dev);
944
945 /* Don't use active slot count to generate BTN_TOOL events. */
946 input_mt_report_pointer_emulation(dev, false);
947
948 /* Send the number of fingers reported by touchpad itself. */
949 input_mt_report_finger_count(dev, num_fingers);
950
951 synaptics_report_buttons(psmouse, sgm);
952
953 input_sync(dev);
954 }
955
956 static void synaptics_image_sensor_process(struct psmouse *psmouse,
957 struct synaptics_hw_state *sgm)
958 {
959 struct synaptics_data *priv = psmouse->private;
960 int num_fingers;
961
962 /*
963 * Update mt_state using the new finger count and current mt_state.
964 */
965 if (sgm->z == 0)
966 num_fingers = 0;
967 else if (sgm->w >= 4)
968 num_fingers = 1;
969 else if (sgm->w == 0)
970 num_fingers = 2;
971 else if (sgm->w == 1)
972 num_fingers = priv->agm_count ? priv->agm_count : 3;
973 else
974 num_fingers = 4;
975
976 /* Send resulting input events to user space */
977 synaptics_report_mt_data(psmouse, sgm, num_fingers);
978 }
979
980 /*
981 * called for each full received packet from the touchpad
982 */
983 static void synaptics_process_packet(struct psmouse *psmouse)
984 {
985 struct input_dev *dev = psmouse->dev;
986 struct synaptics_data *priv = psmouse->private;
987 struct synaptics_hw_state hw;
988 int num_fingers;
989 int finger_width;
990
991 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
992 return;
993
994 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
995 synaptics_image_sensor_process(psmouse, &hw);
996 return;
997 }
998
999 if (hw.scroll) {
1000 priv->scroll += hw.scroll;
1001
1002 while (priv->scroll >= 4) {
1003 input_report_key(dev, BTN_BACK, !hw.down);
1004 input_sync(dev);
1005 input_report_key(dev, BTN_BACK, hw.down);
1006 input_sync(dev);
1007 priv->scroll -= 4;
1008 }
1009 while (priv->scroll <= -4) {
1010 input_report_key(dev, BTN_FORWARD, !hw.up);
1011 input_sync(dev);
1012 input_report_key(dev, BTN_FORWARD, hw.up);
1013 input_sync(dev);
1014 priv->scroll += 4;
1015 }
1016 return;
1017 }
1018
1019 if (hw.z > 0 && hw.x > 1) {
1020 num_fingers = 1;
1021 finger_width = 5;
1022 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1023 switch (hw.w) {
1024 case 0 ... 1:
1025 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1026 num_fingers = hw.w + 2;
1027 break;
1028 case 2:
1029 if (SYN_MODEL_PEN(priv->model_id))
1030 ; /* Nothing, treat a pen as a single finger */
1031 break;
1032 case 4 ... 15:
1033 if (SYN_CAP_PALMDETECT(priv->capabilities))
1034 finger_width = hw.w;
1035 break;
1036 }
1037 }
1038 } else {
1039 num_fingers = 0;
1040 finger_width = 0;
1041 }
1042
1043 if (cr48_profile_sensor) {
1044 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1045 return;
1046 }
1047
1048 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1049 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1050 num_fingers);
1051
1052 /* Post events
1053 * BTN_TOUCH has to be first as mousedev relies on it when doing
1054 * absolute -> relative conversion
1055 */
1056 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1057 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1058
1059 if (num_fingers > 0) {
1060 input_report_abs(dev, ABS_X, hw.x);
1061 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1062 }
1063 input_report_abs(dev, ABS_PRESSURE, hw.z);
1064
1065 if (SYN_CAP_PALMDETECT(priv->capabilities))
1066 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1067
1068 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1069 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1070 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1071 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1072 }
1073
1074 synaptics_report_buttons(psmouse, &hw);
1075
1076 input_sync(dev);
1077 }
1078
1079 static int synaptics_validate_byte(struct psmouse *psmouse,
1080 int idx, unsigned char pkt_type)
1081 {
1082 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1083 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1084 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1085 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1086 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1087 const char *packet = psmouse->packet;
1088
1089 if (idx < 0 || idx > 4)
1090 return 0;
1091
1092 switch (pkt_type) {
1093
1094 case SYN_NEWABS:
1095 case SYN_NEWABS_RELAXED:
1096 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1097
1098 case SYN_NEWABS_STRICT:
1099 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1100
1101 case SYN_OLDABS:
1102 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1103
1104 default:
1105 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1106 return 0;
1107 }
1108 }
1109
1110 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1111 {
1112 int i;
1113
1114 for (i = 0; i < 5; i++)
1115 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1116 psmouse_info(psmouse, "using relaxed packet validation\n");
1117 return SYN_NEWABS_RELAXED;
1118 }
1119
1120 return SYN_NEWABS_STRICT;
1121 }
1122
1123 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1124 {
1125 struct synaptics_data *priv = psmouse->private;
1126
1127 if (psmouse->pktcnt >= 6) { /* Full packet received */
1128 if (unlikely(priv->pkt_type == SYN_NEWABS))
1129 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1130
1131 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1132 synaptics_is_pt_packet(psmouse->packet)) {
1133 if (priv->pt_port)
1134 synaptics_pass_pt_packet(psmouse, priv->pt_port,
1135 psmouse->packet);
1136 } else
1137 synaptics_process_packet(psmouse);
1138
1139 return PSMOUSE_FULL_PACKET;
1140 }
1141
1142 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1143 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1144 }
1145
1146 /*****************************************************************************
1147 * Driver initialization/cleanup functions
1148 ****************************************************************************/
1149 static void set_abs_position_params(struct input_dev *dev,
1150 struct synaptics_data *priv, int x_code,
1151 int y_code)
1152 {
1153 int x_min = priv->x_min ?: XMIN_NOMINAL;
1154 int x_max = priv->x_max ?: XMAX_NOMINAL;
1155 int y_min = priv->y_min ?: YMIN_NOMINAL;
1156 int y_max = priv->y_max ?: YMAX_NOMINAL;
1157 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1158 SYN_REDUCED_FILTER_FUZZ : 0;
1159
1160 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1161 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1162 input_abs_set_res(dev, x_code, priv->x_res);
1163 input_abs_set_res(dev, y_code, priv->y_res);
1164 }
1165
1166 static void set_input_params(struct psmouse *psmouse,
1167 struct synaptics_data *priv)
1168 {
1169 struct input_dev *dev = psmouse->dev;
1170 int i;
1171
1172 /* Things that apply to both modes */
1173 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1174 __set_bit(EV_KEY, dev->evbit);
1175 __set_bit(BTN_LEFT, dev->keybit);
1176 __set_bit(BTN_RIGHT, dev->keybit);
1177
1178 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1179 __set_bit(BTN_MIDDLE, dev->keybit);
1180
1181 if (!priv->absolute_mode) {
1182 /* Relative mode */
1183 __set_bit(EV_REL, dev->evbit);
1184 __set_bit(REL_X, dev->relbit);
1185 __set_bit(REL_Y, dev->relbit);
1186 return;
1187 }
1188
1189 /* Absolute mode */
1190 __set_bit(EV_ABS, dev->evbit);
1191 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1192 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1193
1194 if (cr48_profile_sensor)
1195 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1196
1197 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1198 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1199 ABS_MT_POSITION_Y);
1200 /* Image sensors can report per-contact pressure */
1201 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1202 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
1203
1204 /* Image sensors can signal 4 and 5 finger clicks */
1205 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1206 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1207 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1208 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1209 ABS_MT_POSITION_Y);
1210 /*
1211 * Profile sensor in CR-48 tracks contacts reasonably well,
1212 * other non-image sensors with AGM use semi-mt.
1213 */
1214 input_mt_init_slots(dev, 2,
1215 INPUT_MT_POINTER |
1216 (cr48_profile_sensor ?
1217 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1218 }
1219
1220 if (SYN_CAP_PALMDETECT(priv->capabilities))
1221 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1222
1223 __set_bit(BTN_TOUCH, dev->keybit);
1224 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1225
1226 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1227 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1228 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1229 }
1230
1231 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1232 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1233 __set_bit(BTN_FORWARD, dev->keybit);
1234 __set_bit(BTN_BACK, dev->keybit);
1235 }
1236
1237 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10))
1238 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1239 __set_bit(BTN_0 + i, dev->keybit);
1240
1241 __clear_bit(EV_REL, dev->evbit);
1242 __clear_bit(REL_X, dev->relbit);
1243 __clear_bit(REL_Y, dev->relbit);
1244
1245 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1246 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1247 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1248 !SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10))
1249 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1250 /* Clickpads report only left button */
1251 __clear_bit(BTN_RIGHT, dev->keybit);
1252 __clear_bit(BTN_MIDDLE, dev->keybit);
1253 }
1254 }
1255
1256 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1257 void *data, char *buf)
1258 {
1259 struct synaptics_data *priv = psmouse->private;
1260
1261 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1262 }
1263
1264 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1265 void *data, const char *buf,
1266 size_t len)
1267 {
1268 struct synaptics_data *priv = psmouse->private;
1269 unsigned int value;
1270 int err;
1271
1272 err = kstrtouint(buf, 10, &value);
1273 if (err)
1274 return err;
1275
1276 if (value > 1)
1277 return -EINVAL;
1278
1279 if (value == priv->disable_gesture)
1280 return len;
1281
1282 priv->disable_gesture = value;
1283 if (value)
1284 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1285 else
1286 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1287
1288 if (synaptics_mode_cmd(psmouse, priv->mode))
1289 return -EIO;
1290
1291 return len;
1292 }
1293
1294 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1295 synaptics_show_disable_gesture,
1296 synaptics_set_disable_gesture);
1297
1298 static void synaptics_disconnect(struct psmouse *psmouse)
1299 {
1300 struct synaptics_data *priv = psmouse->private;
1301
1302 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1303 device_remove_file(&psmouse->ps2dev.serio->dev,
1304 &psmouse_attr_disable_gesture.dattr);
1305
1306 synaptics_reset(psmouse);
1307 kfree(priv);
1308 psmouse->private = NULL;
1309 }
1310
1311 static int synaptics_reconnect(struct psmouse *psmouse)
1312 {
1313 struct synaptics_data *priv = psmouse->private;
1314 struct synaptics_data old_priv = *priv;
1315 unsigned char param[2];
1316 int retry = 0;
1317 int error;
1318
1319 do {
1320 psmouse_reset(psmouse);
1321 if (retry) {
1322 /*
1323 * On some boxes, right after resuming, the touchpad
1324 * needs some time to finish initializing (I assume
1325 * it needs time to calibrate) and start responding
1326 * to Synaptics-specific queries, so let's wait a
1327 * bit.
1328 */
1329 ssleep(1);
1330 }
1331 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1332 error = synaptics_detect(psmouse, 0);
1333 } while (error && ++retry < 3);
1334
1335 if (error)
1336 return -1;
1337
1338 if (retry > 1)
1339 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1340
1341 if (synaptics_query_hardware(psmouse)) {
1342 psmouse_err(psmouse, "Unable to query device.\n");
1343 return -1;
1344 }
1345
1346 if (synaptics_set_mode(psmouse)) {
1347 psmouse_err(psmouse, "Unable to initialize device.\n");
1348 return -1;
1349 }
1350
1351 if (old_priv.identity != priv->identity ||
1352 old_priv.model_id != priv->model_id ||
1353 old_priv.capabilities != priv->capabilities ||
1354 old_priv.ext_cap != priv->ext_cap) {
1355 psmouse_err(psmouse,
1356 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1357 old_priv.identity, priv->identity,
1358 old_priv.model_id, priv->model_id,
1359 old_priv.capabilities, priv->capabilities,
1360 old_priv.ext_cap, priv->ext_cap);
1361 return -1;
1362 }
1363
1364 return 0;
1365 }
1366
1367 static bool impaired_toshiba_kbc;
1368
1369 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1370 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1371 {
1372 /* Toshiba Satellite */
1373 .matches = {
1374 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1375 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1376 },
1377 },
1378 {
1379 /* Toshiba Dynabook */
1380 .matches = {
1381 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1382 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1383 },
1384 },
1385 {
1386 /* Toshiba Portege M300 */
1387 .matches = {
1388 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1389 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1390 },
1391
1392 },
1393 {
1394 /* Toshiba Portege M300 */
1395 .matches = {
1396 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1397 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1398 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1399 },
1400
1401 },
1402 #endif
1403 { }
1404 };
1405
1406 static bool broken_olpc_ec;
1407
1408 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1409 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1410 {
1411 /* OLPC XO-1 or XO-1.5 */
1412 .matches = {
1413 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1414 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1415 },
1416 },
1417 #endif
1418 { }
1419 };
1420
1421 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1422 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1423 {
1424 /* Cr-48 Chromebook (Codename Mario) */
1425 .matches = {
1426 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1427 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1428 },
1429 },
1430 #endif
1431 { }
1432 };
1433
1434 void __init synaptics_module_init(void)
1435 {
1436 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1437 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1438 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1439 }
1440
1441 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1442 {
1443 struct synaptics_data *priv;
1444 int err = -1;
1445
1446 /*
1447 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1448 * packet spew overloads the EC such that key presses on the keyboard
1449 * are missed. Given that, don't even attempt to use Absolute mode.
1450 * Relative mode seems to work just fine.
1451 */
1452 if (absolute_mode && broken_olpc_ec) {
1453 psmouse_info(psmouse,
1454 "OLPC XO detected, not enabling Synaptics protocol.\n");
1455 return -ENODEV;
1456 }
1457
1458 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1459 if (!priv)
1460 return -ENOMEM;
1461
1462 psmouse_reset(psmouse);
1463
1464 if (synaptics_query_hardware(psmouse)) {
1465 psmouse_err(psmouse, "Unable to query device.\n");
1466 goto init_fail;
1467 }
1468
1469 priv->absolute_mode = absolute_mode;
1470 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1471 priv->disable_gesture = true;
1472
1473 /*
1474 * Unfortunately ForcePad capability is not exported over PS/2,
1475 * so we have to resort to checking PNP IDs.
1476 */
1477 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1478
1479 if (synaptics_set_mode(psmouse)) {
1480 psmouse_err(psmouse, "Unable to initialize device.\n");
1481 goto init_fail;
1482 }
1483
1484 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1485
1486 psmouse_info(psmouse,
1487 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1488 SYN_ID_MODEL(priv->identity),
1489 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1490 priv->model_id,
1491 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1492 priv->board_id, priv->firmware_id);
1493
1494 set_input_params(psmouse, priv);
1495
1496 /*
1497 * Encode touchpad model so that it can be used to set
1498 * input device->id.version and be visible to userspace.
1499 * Because version is __u16 we have to drop something.
1500 * Hardware info bits seem to be good candidates as they
1501 * are documented to be for Synaptics corp. internal use.
1502 */
1503 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1504 (priv->model_id & 0x000000ff);
1505
1506 if (absolute_mode) {
1507 psmouse->protocol_handler = synaptics_process_byte;
1508 psmouse->pktsize = 6;
1509 } else {
1510 /* Relative mode follows standard PS/2 mouse protocol */
1511 psmouse->protocol_handler = psmouse_process_byte;
1512 psmouse->pktsize = 3;
1513 }
1514
1515 psmouse->set_rate = synaptics_set_rate;
1516 psmouse->disconnect = synaptics_disconnect;
1517 psmouse->reconnect = synaptics_reconnect;
1518 psmouse->cleanup = synaptics_reset;
1519 /* Synaptics can usually stay in sync without extra help */
1520 psmouse->resync_time = 0;
1521
1522 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1523 synaptics_pt_create(psmouse);
1524
1525 /*
1526 * Toshiba's KBC seems to have trouble handling data from
1527 * Synaptics at full rate. Switch to a lower rate (roughly
1528 * the same rate as a standard PS/2 mouse).
1529 */
1530 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1531 psmouse_info(psmouse,
1532 "Toshiba %s detected, limiting rate to 40pps.\n",
1533 dmi_get_system_info(DMI_PRODUCT_NAME));
1534 psmouse->rate = 40;
1535 }
1536
1537 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1538 err = device_create_file(&psmouse->ps2dev.serio->dev,
1539 &psmouse_attr_disable_gesture.dattr);
1540 if (err) {
1541 psmouse_err(psmouse,
1542 "Failed to create disable_gesture attribute (%d)",
1543 err);
1544 goto init_fail;
1545 }
1546 }
1547
1548 return 0;
1549
1550 init_fail:
1551 kfree(priv);
1552 return err;
1553 }
1554
1555 int synaptics_init(struct psmouse *psmouse)
1556 {
1557 return __synaptics_init(psmouse, true);
1558 }
1559
1560 int synaptics_init_relative(struct psmouse *psmouse)
1561 {
1562 return __synaptics_init(psmouse, false);
1563 }
1564
1565 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1566
1567 void __init synaptics_module_init(void)
1568 {
1569 }
1570
1571 int synaptics_init(struct psmouse *psmouse)
1572 {
1573 return -ENOSYS;
1574 }
1575
1576 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
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