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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / input / mouse / synaptics.c
blob2735f86c23cc898ecb4964f11f17344008135c49
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 */
79 static 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
96 int 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
118 void 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. */
128 static const char * const topbuttonpad_pnp_ids[] = {
129 "LEN0017",
130 "LEN0018",
131 "LEN0019",
132 "LEN0023",
133 "LEN002A",
134 "LEN002B",
135 "LEN002C",
136 "LEN002D",
137 "LEN002E",
138 "LEN0033", /* Helix */
139 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
140 "LEN0035", /* X240 */
141 "LEN0036", /* T440 */
142 "LEN0037", /* X1 Carbon 2nd */
143 "LEN0038",
144 "LEN0039", /* T440s */
145 "LEN0041",
146 "LEN0042", /* Yoga */
147 "LEN0045",
148 "LEN0047",
149 "LEN2000", /* S540 */
150 "LEN2001", /* Edge E431 */
151 "LEN2002", /* Edge E531 */
152 "LEN2003",
153 "LEN2004", /* L440 */
154 "LEN2005",
155 "LEN2006", /* Edge E440/E540 */
156 "LEN2007",
157 "LEN2008",
158 "LEN2009",
159 "LEN200A",
160 "LEN200B",
161 NULL
162 };
163
164 static const char * const smbus_pnp_ids[] = {
165 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
166 "LEN0048", /* X1 Carbon 3 */
167 "LEN0046", /* X250 */
168 "LEN0049", /* Yoga 11e */
169 "LEN004a", /* W541 */
170 "LEN005b", /* P50 */
171 "LEN005e", /* T560 */
172 "LEN006c", /* T470s */
173 "LEN007a", /* T470s */
174 "LEN0071", /* T480 */
175 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
176 "LEN0073", /* X1 Carbon G5 (Elantech) */
177 "LEN0091", /* X1 Carbon 6 */
178 "LEN0092", /* X1 Carbon 6 */
179 "LEN0093", /* T480 */
180 "LEN0096", /* X280 */
181 "LEN0097", /* X280 -> ALPS trackpoint */
182 "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */
183 "LEN009b", /* T580 */
184 "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */
185 "LEN040f", /* P1 Gen 3 */
186 "LEN0411", /* L14 Gen 1 */
187 "LEN200f", /* T450s */
188 "LEN2044", /* L470 */
189 "LEN2054", /* E480 */
190 "LEN2055", /* E580 */
191 "LEN2068", /* T14 Gen 1 */
192 "SYN3015", /* HP EliteBook 840 G2 */
193 "SYN3052", /* HP EliteBook 840 G4 */
194 "SYN3221", /* HP 15-ay000 */
195 "SYN323d", /* HP Spectre X360 13-w013dx */
196 "SYN3257", /* HP Envy 13-ad105ng */
197 NULL
198 };
199
200 static const char * const forcepad_pnp_ids[] = {
201 "SYN300D",
202 "SYN3014",
203 NULL
204 };
205
206 /*
207 * Send a command to the synaptics touchpad by special commands
208 */
209 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
210 {
211 int error;
212
213 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
214 if (error)
215 return error;
216
217 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
218 if (error)
219 return error;
220
221 return 0;
222 }
223
224 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
225 {
226 int error;
227 union {
228 __be32 be_val;
229 char buf[4];
230 } resp = { 0 };
231
232 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
233 if (error)
234 return error;
235
236 *val = be32_to_cpu(resp.be_val);
237 return 0;
238 }
239
240 /*
241 * Identify Touchpad
242 * See also the SYN_ID_* macros
243 */
244 static int synaptics_identify(struct psmouse *psmouse,
245 struct synaptics_device_info *info)
246 {
247 int error;
248
249 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
250 if (error)
251 return error;
252
253 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
254 }
255
256 /*
257 * Read the model-id bytes from the touchpad
258 * see also SYN_MODEL_* macros
259 */
260 static int synaptics_model_id(struct psmouse *psmouse,
261 struct synaptics_device_info *info)
262 {
263 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
264 }
265
266 /*
267 * Read the firmware id from the touchpad
268 */
269 static int synaptics_firmware_id(struct psmouse *psmouse,
270 struct synaptics_device_info *info)
271 {
272 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
273 &info->firmware_id);
274 }
275
276 /*
277 * Read the board id and the "More Extended Queries" from the touchpad
278 * The board id is encoded in the "QUERY MODES" response
279 */
280 static int synaptics_query_modes(struct psmouse *psmouse,
281 struct synaptics_device_info *info)
282 {
283 u8 bid[3];
284 int error;
285
286 /* firmwares prior 7.5 have no board_id encoded */
287 if (SYN_ID_FULL(info->identity) < 0x705)
288 return 0;
289
290 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
291 if (error)
292 return error;
293
294 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
295
296 if (SYN_MEXT_CAP_BIT(bid[0]))
297 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
298 &info->ext_cap_10);
299
300 return 0;
301 }
302
303 /*
304 * Read the capability-bits from the touchpad
305 * see also the SYN_CAP_* macros
306 */
307 static int synaptics_capability(struct psmouse *psmouse,
308 struct synaptics_device_info *info)
309 {
310 int error;
311
312 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
313 &info->capabilities);
314 if (error)
315 return error;
316
317 info->ext_cap = info->ext_cap_0c = 0;
318
319 /*
320 * Older firmwares had submodel ID fixed to 0x47
321 */
322 if (SYN_ID_FULL(info->identity) < 0x705 &&
323 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
324 return -ENXIO;
325 }
326
327 /*
328 * Unless capExtended is set the rest of the flags should be ignored
329 */
330 if (!SYN_CAP_EXTENDED(info->capabilities))
331 info->capabilities = 0;
332
333 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
334 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
335 &info->ext_cap);
336 if (error) {
337 psmouse_warn(psmouse,
338 "device claims to have extended capabilities, but I'm not able to read them.\n");
339 } else {
340 /*
341 * if nExtBtn is greater than 8 it should be considered
342 * invalid and treated as 0
343 */
344 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
345 info->ext_cap &= ~SYN_CAP_MB_MASK;
346 }
347 }
348
349 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
350 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
351 &info->ext_cap_0c);
352 if (error)
353 psmouse_warn(psmouse,
354 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
355 }
356
357 return 0;
358 }
359
360 /*
361 * Read touchpad resolution and maximum reported coordinates
362 * Resolution is left zero if touchpad does not support the query
363 */
364 static int synaptics_resolution(struct psmouse *psmouse,
365 struct synaptics_device_info *info)
366 {
367 u8 resp[3];
368 int error;
369
370 if (SYN_ID_MAJOR(info->identity) < 4)
371 return 0;
372
373 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
374 if (!error) {
375 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
376 info->x_res = resp[0]; /* x resolution in units/mm */
377 info->y_res = resp[2]; /* y resolution in units/mm */
378 }
379 }
380
381 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
382 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
383 error = synaptics_send_cmd(psmouse,
384 SYN_QUE_EXT_MAX_COORDS, resp);
385 if (error) {
386 psmouse_warn(psmouse,
387 "device claims to have max coordinates query, but I'm not able to read it.\n");
388 } else {
389 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
390 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
391 psmouse_info(psmouse,
392 "queried max coordinates: x [..%d], y [..%d]\n",
393 info->x_max, info->y_max);
394 }
395 }
396
397 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
398 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
399 /*
400 * Firmware v8.1 does not report proper number of extended
401 * capabilities, but has been proven to report correct min
402 * coordinates.
403 */
404 SYN_ID_FULL(info->identity) == 0x801)) {
405 error = synaptics_send_cmd(psmouse,
406 SYN_QUE_EXT_MIN_COORDS, resp);
407 if (error) {
408 psmouse_warn(psmouse,
409 "device claims to have min coordinates query, but I'm not able to read it.\n");
410 } else {
411 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
412 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
413 psmouse_info(psmouse,
414 "queried min coordinates: x [%d..], y [%d..]\n",
415 info->x_min, info->y_min);
416 }
417 }
418
419 return 0;
420 }
421
422 static int synaptics_query_hardware(struct psmouse *psmouse,
423 struct synaptics_device_info *info)
424 {
425 int error;
426
427 memset(info, 0, sizeof(*info));
428
429 error = synaptics_identify(psmouse, info);
430 if (error)
431 return error;
432
433 error = synaptics_model_id(psmouse, info);
434 if (error)
435 return error;
436
437 error = synaptics_firmware_id(psmouse, info);
438 if (error)
439 return error;
440
441 error = synaptics_query_modes(psmouse, info);
442 if (error)
443 return error;
444
445 error = synaptics_capability(psmouse, info);
446 if (error)
447 return error;
448
449 error = synaptics_resolution(psmouse, info);
450 if (error)
451 return error;
452
453 return 0;
454 }
455
456 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
457
458 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
459
460 static bool cr48_profile_sensor;
461
462 #define ANY_BOARD_ID 0
463 struct min_max_quirk {
464 const char * const *pnp_ids;
465 struct {
466 u32 min, max;
467 } board_id;
468 u32 x_min, x_max, y_min, y_max;
469 };
470
471 static const struct min_max_quirk min_max_pnpid_table[] = {
472 {
473 (const char * const []){"LEN0033", NULL},
474 {ANY_BOARD_ID, ANY_BOARD_ID},
475 1024, 5052, 2258, 4832
476 },
477 {
478 (const char * const []){"LEN0042", NULL},
479 {ANY_BOARD_ID, ANY_BOARD_ID},
480 1232, 5710, 1156, 4696
481 },
482 {
483 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
484 "LEN0039", "LEN2002", "LEN2004",
485 NULL},
486 {ANY_BOARD_ID, 2961},
487 1024, 5112, 2024, 4832
488 },
489 {
490 (const char * const []){"LEN2000", NULL},
491 {ANY_BOARD_ID, ANY_BOARD_ID},
492 1024, 5113, 2021, 4832
493 },
494 {
495 (const char * const []){"LEN2001", NULL},
496 {ANY_BOARD_ID, ANY_BOARD_ID},
497 1024, 5022, 2508, 4832
498 },
499 {
500 (const char * const []){"LEN2006", NULL},
501 {2691, 2691},
502 1024, 5045, 2457, 4832
503 },
504 {
505 (const char * const []){"LEN2006", NULL},
506 {ANY_BOARD_ID, ANY_BOARD_ID},
507 1264, 5675, 1171, 4688
508 },
509 { }
510 };
511
512 /*****************************************************************************
513 * Synaptics communications functions
514 ****************************************************************************/
515
516 /*
517 * Synaptics touchpads report the y coordinate from bottom to top, which is
518 * opposite from what userspace expects.
519 * This function is used to invert y before reporting.
520 */
521 static int synaptics_invert_y(int y)
522 {
523 return YMAX_NOMINAL + YMIN_NOMINAL - y;
524 }
525
526 /*
527 * Apply quirk(s) if the hardware matches
528 */
529 static void synaptics_apply_quirks(struct psmouse *psmouse,
530 struct synaptics_device_info *info)
531 {
532 int i;
533
534 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
535 if (!psmouse_matches_pnp_id(psmouse,
536 min_max_pnpid_table[i].pnp_ids))
537 continue;
538
539 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
540 info->board_id < min_max_pnpid_table[i].board_id.min)
541 continue;
542
543 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
544 info->board_id > min_max_pnpid_table[i].board_id.max)
545 continue;
546
547 info->x_min = min_max_pnpid_table[i].x_min;
548 info->x_max = min_max_pnpid_table[i].x_max;
549 info->y_min = min_max_pnpid_table[i].y_min;
550 info->y_max = min_max_pnpid_table[i].y_max;
551 psmouse_info(psmouse,
552 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
553 info->x_min, info->x_max,
554 info->y_min, info->y_max);
555 break;
556 }
557 }
558
559 static bool synaptics_has_agm(struct synaptics_data *priv)
560 {
561 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
562 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
563 }
564
565 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
566 {
567 static u8 param = 0xc8;
568 int error;
569
570 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
571 if (error)
572 return error;
573
574 error = ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE);
575 if (error)
576 return error;
577
578 return 0;
579 }
580
581 static int synaptics_set_mode(struct psmouse *psmouse)
582 {
583 struct synaptics_data *priv = psmouse->private;
584 int error;
585
586 priv->mode = 0;
587 if (priv->absolute_mode)
588 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
589 if (priv->disable_gesture)
590 priv->mode |= SYN_BIT_DISABLE_GESTURE;
591 if (psmouse->rate >= 80)
592 priv->mode |= SYN_BIT_HIGH_RATE;
593 if (SYN_CAP_EXTENDED(priv->info.capabilities))
594 priv->mode |= SYN_BIT_W_MODE;
595
596 error = synaptics_mode_cmd(psmouse, priv->mode);
597 if (error)
598 return error;
599
600 if (priv->absolute_mode && synaptics_has_agm(priv)) {
601 error = synaptics_set_advanced_gesture_mode(psmouse);
602 if (error) {
603 psmouse_err(psmouse,
604 "Advanced gesture mode init failed: %d\n",
605 error);
606 return error;
607 }
608 }
609
610 return 0;
611 }
612
613 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
614 {
615 struct synaptics_data *priv = psmouse->private;
616
617 if (rate >= 80) {
618 priv->mode |= SYN_BIT_HIGH_RATE;
619 psmouse->rate = 80;
620 } else {
621 priv->mode &= ~SYN_BIT_HIGH_RATE;
622 psmouse->rate = 40;
623 }
624
625 synaptics_mode_cmd(psmouse, priv->mode);
626 }
627
628 /*****************************************************************************
629 * Synaptics pass-through PS/2 port support
630 ****************************************************************************/
631 static int synaptics_pt_write(struct serio *serio, u8 c)
632 {
633 struct psmouse *parent = psmouse_from_serio(serio->parent);
634 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
635 int error;
636
637 error = ps2_sliced_command(&parent->ps2dev, c);
638 if (error)
639 return error;
640
641 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
642 if (error)
643 return error;
644
645 return 0;
646 }
647
648 static int synaptics_pt_start(struct serio *serio)
649 {
650 struct psmouse *parent = psmouse_from_serio(serio->parent);
651 struct synaptics_data *priv = parent->private;
652
653 guard(serio_pause_rx)(parent->ps2dev.serio);
654 priv->pt_port = serio;
655
656 return 0;
657 }
658
659 static void synaptics_pt_stop(struct serio *serio)
660 {
661 struct psmouse *parent = psmouse_from_serio(serio->parent);
662 struct synaptics_data *priv = parent->private;
663
664 guard(serio_pause_rx)(parent->ps2dev.serio);
665 priv->pt_port = NULL;
666 }
667
668 static int synaptics_is_pt_packet(u8 *buf)
669 {
670 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
671 }
672
673 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
674 {
675 struct psmouse *child = psmouse_from_serio(ptport);
676
677 if (child && child->state == PSMOUSE_ACTIVATED) {
678 serio_interrupt(ptport, packet[1], 0);
679 serio_interrupt(ptport, packet[4], 0);
680 serio_interrupt(ptport, packet[5], 0);
681 if (child->pktsize == 4)
682 serio_interrupt(ptport, packet[2], 0);
683 } else {
684 serio_interrupt(ptport, packet[1], 0);
685 }
686 }
687
688 static void synaptics_pt_activate(struct psmouse *psmouse)
689 {
690 struct synaptics_data *priv = psmouse->private;
691 struct psmouse *child = psmouse_from_serio(priv->pt_port);
692
693 /* adjust the touchpad to child's choice of protocol */
694 if (child) {
695 if (child->pktsize == 4)
696 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
697 else
698 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
699
700 if (synaptics_mode_cmd(psmouse, priv->mode))
701 psmouse_warn(psmouse,
702 "failed to switch guest protocol\n");
703 }
704 }
705
706 static void synaptics_pt_create(struct psmouse *psmouse)
707 {
708 struct serio *serio;
709
710 serio = kzalloc(sizeof(*serio), GFP_KERNEL);
711 if (!serio) {
712 psmouse_err(psmouse,
713 "not enough memory for pass-through port\n");
714 return;
715 }
716
717 serio->id.type = SERIO_PS_PSTHRU;
718 strscpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
719 strscpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys));
720 serio->write = synaptics_pt_write;
721 serio->start = synaptics_pt_start;
722 serio->stop = synaptics_pt_stop;
723 serio->parent = psmouse->ps2dev.serio;
724
725 psmouse->pt_activate = synaptics_pt_activate;
726
727 psmouse_info(psmouse, "serio: %s port at %s\n",
728 serio->name, psmouse->phys);
729 serio_register_port(serio);
730 }
731
732 /*****************************************************************************
733 * Functions to interpret the absolute mode packets
734 ****************************************************************************/
735
736 static void synaptics_parse_agm(const u8 buf[],
737 struct synaptics_data *priv,
738 struct synaptics_hw_state *hw)
739 {
740 struct synaptics_hw_state *agm = &priv->agm;
741 int agm_packet_type;
742
743 agm_packet_type = (buf[5] & 0x30) >> 4;
744 switch (agm_packet_type) {
745 case 1:
746 /* Gesture packet: (x, y, z) half resolution */
747 agm->w = hw->w;
748 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
749 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
750 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
751 break;
752
753 case 2:
754 /* AGM-CONTACT packet: we are only interested in the count */
755 priv->agm_count = buf[1];
756 break;
757
758 default:
759 break;
760 }
761 }
762
763 static void synaptics_parse_ext_buttons(const u8 buf[],
764 struct synaptics_data *priv,
765 struct synaptics_hw_state *hw)
766 {
767 unsigned int ext_bits =
768 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
769 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
770
771 hw->ext_buttons = buf[4] & ext_mask;
772 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
773 }
774
775 static int synaptics_parse_hw_state(const u8 buf[],
776 struct synaptics_data *priv,
777 struct synaptics_hw_state *hw)
778 {
779 memset(hw, 0, sizeof(struct synaptics_hw_state));
780
781 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
782 hw->w = (((buf[0] & 0x30) >> 2) |
783 ((buf[0] & 0x04) >> 1) |
784 ((buf[3] & 0x04) >> 2));
785
786 if (synaptics_has_agm(priv) && hw->w == 2) {
787 synaptics_parse_agm(buf, priv, hw);
788 return 1;
789 }
790
791 hw->x = (((buf[3] & 0x10) << 8) |
792 ((buf[1] & 0x0f) << 8) |
793 buf[4]);
794 hw->y = (((buf[3] & 0x20) << 7) |
795 ((buf[1] & 0xf0) << 4) |
796 buf[5]);
797 hw->z = buf[2];
798
799 hw->left = (buf[0] & 0x01) ? 1 : 0;
800 hw->right = (buf[0] & 0x02) ? 1 : 0;
801
802 if (priv->is_forcepad) {
803 /*
804 * ForcePads, like Clickpads, use middle button
805 * bits to report primary button clicks.
806 * Unfortunately they report primary button not
807 * only when user presses on the pad above certain
808 * threshold, but also when there are more than one
809 * finger on the touchpad, which interferes with
810 * out multi-finger gestures.
811 */
812 if (hw->z == 0) {
813 /* No contacts */
814 priv->press = priv->report_press = false;
815 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
816 /*
817 * Single-finger touch with pressure above
818 * the threshold. If pressure stays long
819 * enough, we'll start reporting primary
820 * button. We rely on the device continuing
821 * sending data even if finger does not
822 * move.
823 */
824 if (!priv->press) {
825 priv->press_start = jiffies;
826 priv->press = true;
827 } else if (time_after(jiffies,
828 priv->press_start +
829 msecs_to_jiffies(50))) {
830 priv->report_press = true;
831 }
832 } else {
833 priv->press = false;
834 }
835
836 hw->left = priv->report_press;
837
838 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
839 /*
840 * Clickpad's button is transmitted as middle button,
841 * however, since it is primary button, we will report
842 * it as BTN_LEFT.
843 */
844 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
845
846 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
847 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
848 if (hw->w == 2)
849 hw->scroll = (s8)buf[1];
850 }
851
852 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
853 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
854 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
855 }
856
857 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
858 ((buf[0] ^ buf[3]) & 0x02)) {
859 synaptics_parse_ext_buttons(buf, priv, hw);
860 }
861 } else {
862 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
863 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
864
865 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
866 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
867
868 hw->left = (buf[0] & 0x01) ? 1 : 0;
869 hw->right = (buf[0] & 0x02) ? 1 : 0;
870 }
871
872 /*
873 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
874 * is used by some firmware to indicate a finger at the edge of
875 * the touchpad whose precise position cannot be determined, so
876 * convert these values to the maximum axis value.
877 */
878 if (hw->x > X_MAX_POSITIVE)
879 hw->x -= 1 << ABS_POS_BITS;
880 else if (hw->x == X_MAX_POSITIVE)
881 hw->x = XMAX;
882
883 if (hw->y > Y_MAX_POSITIVE)
884 hw->y -= 1 << ABS_POS_BITS;
885 else if (hw->y == Y_MAX_POSITIVE)
886 hw->y = YMAX;
887
888 return 0;
889 }
890
891 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
892 bool active, int x, int y)
893 {
894 input_mt_slot(dev, slot);
895 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
896 if (active) {
897 input_report_abs(dev, ABS_MT_POSITION_X, x);
898 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
899 }
900 }
901
902 static void synaptics_report_semi_mt_data(struct input_dev *dev,
903 const struct synaptics_hw_state *a,
904 const struct synaptics_hw_state *b,
905 int num_fingers)
906 {
907 if (num_fingers >= 2) {
908 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
909 min(a->y, b->y));
910 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
911 max(a->y, b->y));
912 } else if (num_fingers == 1) {
913 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
914 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
915 } else {
916 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
917 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
918 }
919 }
920
921 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
922 const struct synaptics_hw_state *hw)
923 {
924 struct input_dev *dev = psmouse->dev;
925 struct synaptics_data *priv = psmouse->private;
926 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
927 int i;
928
929 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
930 return;
931
932 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
933 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
934 SYN_ID_FULL(priv->info.identity) == 0x802) &&
935 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
936 return;
937
938 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
939 for (i = 0; i < ext_bits; i++) {
940 input_report_key(dev, BTN_0 + 2 * i,
941 hw->ext_buttons & BIT(i));
942 input_report_key(dev, BTN_1 + 2 * i,
943 hw->ext_buttons & BIT(i + ext_bits));
944 }
945 return;
946 }
947
948 /*
949 * This generation of touchpads has the trackstick buttons
950 * physically wired to the touchpad. Re-route them through
951 * the pass-through interface.
952 */
953 if (priv->pt_port) {
954 u8 pt_buttons;
955
956 /* The trackstick expects at most 3 buttons */
957 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
958 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
959 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
960
961 serio_interrupt(priv->pt_port,
962 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
963 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
964 }
965 }
966
967 static void synaptics_report_buttons(struct psmouse *psmouse,
968 const struct synaptics_hw_state *hw)
969 {
970 struct input_dev *dev = psmouse->dev;
971 struct synaptics_data *priv = psmouse->private;
972
973 input_report_key(dev, BTN_LEFT, hw->left);
974 input_report_key(dev, BTN_RIGHT, hw->right);
975
976 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
977 input_report_key(dev, BTN_MIDDLE, hw->middle);
978
979 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
980 input_report_key(dev, BTN_FORWARD, hw->up);
981 input_report_key(dev, BTN_BACK, hw->down);
982 }
983
984 synaptics_report_ext_buttons(psmouse, hw);
985 }
986
987 static void synaptics_report_mt_data(struct psmouse *psmouse,
988 const struct synaptics_hw_state *sgm,
989 int num_fingers)
990 {
991 struct input_dev *dev = psmouse->dev;
992 struct synaptics_data *priv = psmouse->private;
993 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
994 struct input_mt_pos pos[2];
995 int slot[2], nsemi, i;
996
997 nsemi = clamp_val(num_fingers, 0, 2);
998
999 for (i = 0; i < nsemi; i++) {
1000 pos[i].x = hw[i]->x;
1001 pos[i].y = synaptics_invert_y(hw[i]->y);
1002 }
1003
1004 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
1005
1006 for (i = 0; i < nsemi; i++) {
1007 input_mt_slot(dev, slot[i]);
1008 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
1009 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
1010 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
1011 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1012 }
1013
1014 input_mt_drop_unused(dev);
1015
1016 /* Don't use active slot count to generate BTN_TOOL events. */
1017 input_mt_report_pointer_emulation(dev, false);
1018
1019 /* Send the number of fingers reported by touchpad itself. */
1020 input_mt_report_finger_count(dev, num_fingers);
1021
1022 synaptics_report_buttons(psmouse, sgm);
1023
1024 input_sync(dev);
1025 }
1026
1027 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1028 struct synaptics_hw_state *sgm)
1029 {
1030 struct synaptics_data *priv = psmouse->private;
1031 int num_fingers;
1032
1033 /*
1034 * Update mt_state using the new finger count and current mt_state.
1035 */
1036 if (sgm->z == 0)
1037 num_fingers = 0;
1038 else if (sgm->w >= 4)
1039 num_fingers = 1;
1040 else if (sgm->w == 0)
1041 num_fingers = 2;
1042 else if (sgm->w == 1)
1043 num_fingers = priv->agm_count ? priv->agm_count : 3;
1044 else
1045 num_fingers = 4;
1046
1047 /* Send resulting input events to user space */
1048 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1049 }
1050
1051 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1052 {
1053 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1054 return true;
1055
1056 /* Advanced gesture mode also sends multi finger data */
1057 return synaptics_has_agm(priv);
1058 }
1059
1060 /*
1061 * called for each full received packet from the touchpad
1062 */
1063 static void synaptics_process_packet(struct psmouse *psmouse)
1064 {
1065 struct input_dev *dev = psmouse->dev;
1066 struct synaptics_data *priv = psmouse->private;
1067 struct synaptics_device_info *info = &priv->info;
1068 struct synaptics_hw_state hw;
1069 int num_fingers;
1070 int finger_width;
1071
1072 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1073 return;
1074
1075 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1076 synaptics_image_sensor_process(psmouse, &hw);
1077 return;
1078 }
1079
1080 if (hw.scroll) {
1081 priv->scroll += hw.scroll;
1082
1083 while (priv->scroll >= 4) {
1084 input_report_key(dev, BTN_BACK, !hw.down);
1085 input_sync(dev);
1086 input_report_key(dev, BTN_BACK, hw.down);
1087 input_sync(dev);
1088 priv->scroll -= 4;
1089 }
1090 while (priv->scroll <= -4) {
1091 input_report_key(dev, BTN_FORWARD, !hw.up);
1092 input_sync(dev);
1093 input_report_key(dev, BTN_FORWARD, hw.up);
1094 input_sync(dev);
1095 priv->scroll += 4;
1096 }
1097 return;
1098 }
1099
1100 if (hw.z > 0 && hw.x > 1) {
1101 num_fingers = 1;
1102 finger_width = 5;
1103 if (SYN_CAP_EXTENDED(info->capabilities)) {
1104 switch (hw.w) {
1105 case 0 ... 1:
1106 if (synaptics_has_multifinger(priv))
1107 num_fingers = hw.w + 2;
1108 break;
1109 case 2:
1110 /*
1111 * SYN_MODEL_PEN(info->model_id): even if
1112 * the device supports pen, we treat it as
1113 * a single finger.
1114 */
1115 break;
1116 case 4 ... 15:
1117 if (SYN_CAP_PALMDETECT(info->capabilities))
1118 finger_width = hw.w;
1119 break;
1120 }
1121 }
1122 } else {
1123 num_fingers = 0;
1124 finger_width = 0;
1125 }
1126
1127 if (cr48_profile_sensor) {
1128 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1129 return;
1130 }
1131
1132 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1133 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1134 num_fingers);
1135
1136 /* Post events
1137 * BTN_TOUCH has to be first as mousedev relies on it when doing
1138 * absolute -> relative conversion
1139 */
1140 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1141 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1142
1143 if (num_fingers > 0) {
1144 input_report_abs(dev, ABS_X, hw.x);
1145 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1146 }
1147 input_report_abs(dev, ABS_PRESSURE, hw.z);
1148
1149 if (SYN_CAP_PALMDETECT(info->capabilities))
1150 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1151
1152 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1153 if (synaptics_has_multifinger(priv)) {
1154 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1155 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1156 }
1157
1158 synaptics_report_buttons(psmouse, &hw);
1159
1160 input_sync(dev);
1161 }
1162
1163 static bool synaptics_validate_byte(struct psmouse *psmouse,
1164 int idx, enum synaptics_pkt_type pkt_type)
1165 {
1166 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1167 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1168 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1169 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1170 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1171 const u8 *packet = psmouse->packet;
1172
1173 if (idx < 0 || idx > 4)
1174 return false;
1175
1176 switch (pkt_type) {
1177
1178 case SYN_NEWABS:
1179 case SYN_NEWABS_RELAXED:
1180 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1181
1182 case SYN_NEWABS_STRICT:
1183 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1184
1185 case SYN_OLDABS:
1186 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1187
1188 default:
1189 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1190 return false;
1191 }
1192 }
1193
1194 static enum synaptics_pkt_type
1195 synaptics_detect_pkt_type(struct psmouse *psmouse)
1196 {
1197 int i;
1198
1199 for (i = 0; i < 5; i++) {
1200 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1201 psmouse_info(psmouse, "using relaxed packet validation\n");
1202 return SYN_NEWABS_RELAXED;
1203 }
1204 }
1205
1206 return SYN_NEWABS_STRICT;
1207 }
1208
1209 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1210 {
1211 struct synaptics_data *priv = psmouse->private;
1212
1213 if (psmouse->pktcnt >= 6) { /* Full packet received */
1214 if (unlikely(priv->pkt_type == SYN_NEWABS))
1215 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1216
1217 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1218 synaptics_is_pt_packet(psmouse->packet)) {
1219 if (priv->pt_port)
1220 synaptics_pass_pt_packet(priv->pt_port,
1221 psmouse->packet);
1222 } else
1223 synaptics_process_packet(psmouse);
1224
1225 return PSMOUSE_FULL_PACKET;
1226 }
1227
1228 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1229 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1230 }
1231
1232 /*****************************************************************************
1233 * Driver initialization/cleanup functions
1234 ****************************************************************************/
1235 static void set_abs_position_params(struct input_dev *dev,
1236 struct synaptics_device_info *info,
1237 int x_code, int y_code)
1238 {
1239 int x_min = info->x_min ?: XMIN_NOMINAL;
1240 int x_max = info->x_max ?: XMAX_NOMINAL;
1241 int y_min = info->y_min ?: YMIN_NOMINAL;
1242 int y_max = info->y_max ?: YMAX_NOMINAL;
1243 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1244 SYN_REDUCED_FILTER_FUZZ : 0;
1245
1246 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1247 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1248 input_abs_set_res(dev, x_code, info->x_res);
1249 input_abs_set_res(dev, y_code, info->y_res);
1250 }
1251
1252 static int set_input_params(struct psmouse *psmouse,
1253 struct synaptics_data *priv)
1254 {
1255 struct input_dev *dev = psmouse->dev;
1256 struct synaptics_device_info *info = &priv->info;
1257 int i;
1258 int error;
1259
1260 /* Reset default psmouse capabilities */
1261 __clear_bit(EV_REL, dev->evbit);
1262 bitmap_zero(dev->relbit, REL_CNT);
1263 bitmap_zero(dev->keybit, KEY_CNT);
1264
1265 /* Things that apply to both modes */
1266 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1267
1268 input_set_capability(dev, EV_KEY, BTN_LEFT);
1269
1270 /* Clickpads report only left button */
1271 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1272 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1273 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1274 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1275 }
1276
1277 if (!priv->absolute_mode) {
1278 /* Relative mode */
1279 input_set_capability(dev, EV_REL, REL_X);
1280 input_set_capability(dev, EV_REL, REL_Y);
1281 return 0;
1282 }
1283
1284 /* Absolute mode */
1285 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1286 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1287
1288 if (cr48_profile_sensor)
1289 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1290
1291 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1292 set_abs_position_params(dev, info,
1293 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1294 /* Image sensors can report per-contact pressure */
1295 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1296
1297 error = input_mt_init_slots(dev, 2,
1298 INPUT_MT_POINTER | INPUT_MT_TRACK);
1299 if (error)
1300 return error;
1301
1302 /* Image sensors can signal 4 and 5 finger clicks */
1303 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1304 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1305 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1306 set_abs_position_params(dev, info,
1307 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1308 /*
1309 * Profile sensor in CR-48 tracks contacts reasonably well,
1310 * other non-image sensors with AGM use semi-mt.
1311 */
1312 error = input_mt_init_slots(dev, 2,
1313 INPUT_MT_POINTER |
1314 (cr48_profile_sensor ?
1315 INPUT_MT_TRACK :
1316 INPUT_MT_SEMI_MT));
1317 if (error)
1318 return error;
1319
1320 /*
1321 * For semi-mt devices we send ABS_X/Y ourselves instead of
1322 * input_mt_report_pointer_emulation. But
1323 * input_mt_init_slots() resets the fuzz to 0, leading to a
1324 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1325 * position. Let's re-initialize ABS_X/Y here.
1326 */
1327 if (!cr48_profile_sensor)
1328 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1329 }
1330
1331 if (SYN_CAP_PALMDETECT(info->capabilities))
1332 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1333
1334 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1335 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1336
1337 if (synaptics_has_multifinger(priv)) {
1338 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1339 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1340 }
1341
1342 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1343 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1344 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1345 input_set_capability(dev, EV_KEY, BTN_BACK);
1346 }
1347
1348 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1349 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1350 input_set_capability(dev, EV_KEY, BTN_0 + i);
1351
1352 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1353 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1354 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1355 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1356 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1357 }
1358
1359 return 0;
1360 }
1361
1362 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1363 void *data, char *buf)
1364 {
1365 struct synaptics_data *priv = psmouse->private;
1366
1367 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1368 }
1369
1370 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1371 void *data, const char *buf,
1372 size_t len)
1373 {
1374 struct synaptics_data *priv = psmouse->private;
1375 unsigned int value;
1376 int err;
1377
1378 err = kstrtouint(buf, 10, &value);
1379 if (err)
1380 return err;
1381
1382 if (value > 1)
1383 return -EINVAL;
1384
1385 if (value == priv->disable_gesture)
1386 return len;
1387
1388 priv->disable_gesture = value;
1389 if (value)
1390 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1391 else
1392 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1393
1394 if (synaptics_mode_cmd(psmouse, priv->mode))
1395 return -EIO;
1396
1397 return len;
1398 }
1399
1400 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1401 synaptics_show_disable_gesture,
1402 synaptics_set_disable_gesture);
1403
1404 static void synaptics_disconnect(struct psmouse *psmouse)
1405 {
1406 struct synaptics_data *priv = psmouse->private;
1407
1408 /*
1409 * We might have left a breadcrumb when trying to
1410 * set up SMbus companion.
1411 */
1412 psmouse_smbus_cleanup(psmouse);
1413
1414 if (!priv->absolute_mode &&
1415 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1416 device_remove_file(&psmouse->ps2dev.serio->dev,
1417 &psmouse_attr_disable_gesture.dattr);
1418
1419 synaptics_reset(psmouse);
1420 kfree(priv);
1421 psmouse->private = NULL;
1422 }
1423
1424 static int synaptics_reconnect(struct psmouse *psmouse)
1425 {
1426 struct synaptics_data *priv = psmouse->private;
1427 struct synaptics_device_info info;
1428 u8 param[2];
1429 int retry = 0;
1430 int error;
1431
1432 do {
1433 psmouse_reset(psmouse);
1434 if (retry) {
1435 /*
1436 * On some boxes, right after resuming, the touchpad
1437 * needs some time to finish initializing (I assume
1438 * it needs time to calibrate) and start responding
1439 * to Synaptics-specific queries, so let's wait a
1440 * bit.
1441 */
1442 ssleep(1);
1443 }
1444 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1445 error = synaptics_detect(psmouse, 0);
1446 } while (error && ++retry < 3);
1447
1448 if (error)
1449 return error;
1450
1451 if (retry > 1)
1452 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1453
1454 error = synaptics_query_hardware(psmouse, &info);
1455 if (error) {
1456 psmouse_err(psmouse, "Unable to query device.\n");
1457 return error;
1458 }
1459
1460 error = synaptics_set_mode(psmouse);
1461 if (error) {
1462 psmouse_err(psmouse, "Unable to initialize device.\n");
1463 return error;
1464 }
1465
1466 if (info.identity != priv->info.identity ||
1467 info.model_id != priv->info.model_id ||
1468 info.capabilities != priv->info.capabilities ||
1469 info.ext_cap != priv->info.ext_cap) {
1470 psmouse_err(psmouse,
1471 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1472 priv->info.identity, info.identity,
1473 priv->info.model_id, info.model_id,
1474 priv->info.capabilities, info.capabilities,
1475 priv->info.ext_cap, info.ext_cap);
1476 return -ENXIO;
1477 }
1478
1479 return 0;
1480 }
1481
1482 static bool impaired_toshiba_kbc;
1483
1484 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1485 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1486 {
1487 /* Toshiba Satellite */
1488 .matches = {
1489 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1490 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1491 },
1492 },
1493 {
1494 /* Toshiba Dynabook */
1495 .matches = {
1496 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1497 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1498 },
1499 },
1500 {
1501 /* Toshiba Portege M300 */
1502 .matches = {
1503 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1504 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1505 },
1506
1507 },
1508 {
1509 /* Toshiba Portege M300 */
1510 .matches = {
1511 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1512 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1513 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1514 },
1515
1516 },
1517 #endif
1518 { }
1519 };
1520
1521 static bool broken_olpc_ec;
1522
1523 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1524 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1525 {
1526 /* OLPC XO-1 or XO-1.5 */
1527 .matches = {
1528 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1529 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1530 },
1531 },
1532 #endif
1533 { }
1534 };
1535
1536 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1537 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1538 {
1539 /* Cr-48 Chromebook (Codename Mario) */
1540 .matches = {
1541 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1542 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1543 },
1544 },
1545 #endif
1546 { }
1547 };
1548
1549 void __init synaptics_module_init(void)
1550 {
1551 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1552 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1553 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1554 }
1555
1556 static int synaptics_init_ps2(struct psmouse *psmouse,
1557 struct synaptics_device_info *info,
1558 bool absolute_mode)
1559 {
1560 struct synaptics_data *priv;
1561 int err;
1562
1563 synaptics_apply_quirks(psmouse, info);
1564
1565 psmouse->private = priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1566 if (!priv)
1567 return -ENOMEM;
1568
1569 priv->info = *info;
1570 priv->absolute_mode = absolute_mode;
1571 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1572 priv->disable_gesture = true;
1573
1574 /*
1575 * Unfortunately ForcePad capability is not exported over PS/2,
1576 * so we have to resort to checking PNP IDs.
1577 */
1578 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1579
1580 err = synaptics_set_mode(psmouse);
1581 if (err) {
1582 psmouse_err(psmouse, "Unable to initialize device.\n");
1583 goto init_fail;
1584 }
1585
1586 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1587 SYN_NEWABS : SYN_OLDABS;
1588
1589 psmouse_info(psmouse,
1590 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1591 SYN_ID_MODEL(info->identity),
1592 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1593 info->model_id,
1594 info->capabilities, info->ext_cap, info->ext_cap_0c,
1595 info->ext_cap_10, info->board_id, info->firmware_id);
1596
1597 err = set_input_params(psmouse, priv);
1598 if (err) {
1599 psmouse_err(psmouse,
1600 "failed to set up capabilities: %d\n", err);
1601 goto init_fail;
1602 }
1603
1604 /*
1605 * Encode touchpad model so that it can be used to set
1606 * input device->id.version and be visible to userspace.
1607 * Because version is __u16 we have to drop something.
1608 * Hardware info bits seem to be good candidates as they
1609 * are documented to be for Synaptics corp. internal use.
1610 */
1611 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1612 (info->model_id & 0x000000ff);
1613
1614 if (absolute_mode) {
1615 psmouse->protocol_handler = synaptics_process_byte;
1616 psmouse->pktsize = 6;
1617 } else {
1618 /* Relative mode follows standard PS/2 mouse protocol */
1619 psmouse->protocol_handler = psmouse_process_byte;
1620 psmouse->pktsize = 3;
1621 }
1622
1623 psmouse->set_rate = synaptics_set_rate;
1624 psmouse->disconnect = synaptics_disconnect;
1625 psmouse->reconnect = synaptics_reconnect;
1626 psmouse->fast_reconnect = NULL;
1627 psmouse->cleanup = synaptics_reset;
1628 /* Synaptics can usually stay in sync without extra help */
1629 psmouse->resync_time = 0;
1630
1631 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1632 synaptics_pt_create(psmouse);
1633
1634 /*
1635 * Toshiba's KBC seems to have trouble handling data from
1636 * Synaptics at full rate. Switch to a lower rate (roughly
1637 * the same rate as a standard PS/2 mouse).
1638 */
1639 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1640 psmouse_info(psmouse,
1641 "Toshiba %s detected, limiting rate to 40pps.\n",
1642 dmi_get_system_info(DMI_PRODUCT_NAME));
1643 psmouse->rate = 40;
1644 }
1645
1646 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1647 err = device_create_file(&psmouse->ps2dev.serio->dev,
1648 &psmouse_attr_disable_gesture.dattr);
1649 if (err) {
1650 psmouse_err(psmouse,
1651 "Failed to create disable_gesture attribute (%d)",
1652 err);
1653 goto init_fail;
1654 }
1655 }
1656
1657 return 0;
1658
1659 init_fail:
1660 kfree(priv);
1661 return err;
1662 }
1663
1664 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1665 {
1666 struct synaptics_device_info info;
1667 int error;
1668
1669 psmouse_reset(psmouse);
1670
1671 error = synaptics_query_hardware(psmouse, &info);
1672 if (error) {
1673 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1674 return error;
1675 }
1676
1677 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1678 }
1679
1680 int synaptics_init_absolute(struct psmouse *psmouse)
1681 {
1682 return __synaptics_init(psmouse, true);
1683 }
1684
1685 int synaptics_init_relative(struct psmouse *psmouse)
1686 {
1687 return __synaptics_init(psmouse, false);
1688 }
1689
1690 static int synaptics_setup_ps2(struct psmouse *psmouse,
1691 struct synaptics_device_info *info)
1692 {
1693 bool absolute_mode = true;
1694 int error;
1695
1696 /*
1697 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1698 * packet spew overloads the EC such that key presses on the keyboard
1699 * are missed. Given that, don't even attempt to use Absolute mode.
1700 * Relative mode seems to work just fine.
1701 */
1702 if (broken_olpc_ec) {
1703 psmouse_info(psmouse,
1704 "OLPC XO detected, forcing relative protocol.\n");
1705 absolute_mode = false;
1706 }
1707
1708 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1709 if (error)
1710 return error;
1711
1712 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1713 }
1714
1715 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1716
1717 void __init synaptics_module_init(void)
1718 {
1719 }
1720
1721 static int __maybe_unused
1722 synaptics_setup_ps2(struct psmouse *psmouse,
1723 struct synaptics_device_info *info)
1724 {
1725 return -ENOSYS;
1726 }
1727
1728 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1729
1730 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1731
1732 /*
1733 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1734 * provides a better bandwidth and allow a better control of the touchpads.
1735 * This is used to decide if we need to use this bus or not.
1736 */
1737 enum {
1738 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1739 SYNAPTICS_INTERTOUCH_OFF,
1740 SYNAPTICS_INTERTOUCH_ON,
1741 };
1742
1743 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1744 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1745 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1746 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1747
1748 static int synaptics_create_intertouch(struct psmouse *psmouse,
1749 struct synaptics_device_info *info,
1750 bool leave_breadcrumbs)
1751 {
1752 bool topbuttonpad =
1753 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1754 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1755 const struct rmi_device_platform_data pdata = {
1756 .reset_delay_ms = 30,
1757 .sensor_pdata = {
1758 .sensor_type = rmi_sensor_touchpad,
1759 .axis_align.flip_y = true,
1760 .kernel_tracking = false,
1761 .topbuttonpad = topbuttonpad,
1762 },
1763 .gpio_data = {
1764 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1765 .trackstick_buttons =
1766 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1767 },
1768 };
1769 const struct i2c_board_info intertouch_board = {
1770 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1771 .flags = I2C_CLIENT_HOST_NOTIFY,
1772 };
1773
1774 return psmouse_smbus_init(psmouse, &intertouch_board,
1775 &pdata, sizeof(pdata), true,
1776 leave_breadcrumbs);
1777 }
1778
1779 /*
1780 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1781 * and decides to instantiate a SMBus InterTouch device.
1782 */
1783 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1784 struct synaptics_device_info *info,
1785 bool leave_breadcrumbs)
1786 {
1787 int error;
1788
1789 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1790 return -ENXIO;
1791
1792 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1793 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1794 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1795
1796 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1797 psmouse_info(psmouse,
1798 "Your touchpad (%s) says it can support a different bus. "
1799 "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",
1800 psmouse->ps2dev.serio->firmware_id);
1801
1802 return -ENXIO;
1803 }
1804 }
1805
1806 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1807
1808 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1809 if (error) {
1810 if (error == -EAGAIN)
1811 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1812 else
1813 psmouse_err(psmouse, "unable to create intertouch device\n");
1814
1815 return error;
1816 }
1817
1818 return 0;
1819 }
1820
1821 int synaptics_init_smbus(struct psmouse *psmouse)
1822 {
1823 struct synaptics_device_info info;
1824 int error;
1825
1826 psmouse_reset(psmouse);
1827
1828 error = synaptics_query_hardware(psmouse, &info);
1829 if (error) {
1830 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1831 return error;
1832 }
1833
1834 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1835 return -ENXIO;
1836
1837 return synaptics_create_intertouch(psmouse, &info, false);
1838 }
1839
1840 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1841
1842 static int __maybe_unused
1843 synaptics_setup_intertouch(struct psmouse *psmouse,
1844 struct synaptics_device_info *info,
1845 bool leave_breadcrumbs)
1846 {
1847 return -ENOSYS;
1848 }
1849
1850 int synaptics_init_smbus(struct psmouse *psmouse)
1851 {
1852 return -ENOSYS;
1853 }
1854
1855 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1856
1857 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1858 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1859
1860 int synaptics_init(struct psmouse *psmouse)
1861 {
1862 struct synaptics_device_info info;
1863 int error;
1864 int retval;
1865
1866 psmouse_reset(psmouse);
1867
1868 error = synaptics_query_hardware(psmouse, &info);
1869 if (error) {
1870 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1871 return error;
1872 }
1873
1874 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1875 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1876 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1877 /* Forcepads need F21, which is not ready */
1878 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1879 psmouse_warn(psmouse,
1880 "The touchpad can support a better bus than the too old PS/2 protocol. "
1881 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1882 }
1883
1884 error = synaptics_setup_intertouch(psmouse, &info, true);
1885 if (!error)
1886 return PSMOUSE_SYNAPTICS_SMBUS;
1887 }
1888
1889 retval = synaptics_setup_ps2(psmouse, &info);
1890 if (retval < 0) {
1891 /*
1892 * Not using any flavor of Synaptics support, so clean up
1893 * SMbus breadcrumbs, if any.
1894 */
1895 psmouse_smbus_cleanup(psmouse);
1896 }
1897
1898 return retval;
1899 }
1900
1901 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1902
1903 int synaptics_init(struct psmouse *psmouse)
1904 {
1905 return -ENOSYS;
1906 }
1907
1908 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
Kernel DRM miscellaneous fixes and cross-tree changes