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Merge tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[thirdparty/kernel/stable.git] / drivers / input / mouse / synaptics.c
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 "LEN0049",
150 "LEN2000", /* S540 */
151 "LEN2001", /* Edge E431 */
152 "LEN2002", /* Edge E531 */
153 "LEN2003",
154 "LEN2004", /* L440 */
155 "LEN2005",
156 "LEN2006", /* Edge E440/E540 */
157 "LEN2007",
158 "LEN2008",
159 "LEN2009",
160 "LEN200A",
161 "LEN200B",
162 NULL
163 };
164
165 static const char * const smbus_pnp_ids[] = {
166 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
167 "LEN0048", /* X1 Carbon 3 */
168 "LEN0046", /* X250 */
169 "LEN004a", /* W541 */
170 "LEN005b", /* P50 */
171 "LEN005e", /* T560 */
172 "LEN0071", /* T480 */
173 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
174 "LEN0073", /* X1 Carbon G5 (Elantech) */
175 "LEN0092", /* X1 Carbon 6 */
176 "LEN0096", /* X280 */
177 "LEN0097", /* X280 -> ALPS trackpoint */
178 "LEN200f", /* T450s */
179 "LEN2054", /* E480 */
180 "LEN2055", /* E580 */
181 "SYN3052", /* HP EliteBook 840 G4 */
182 "SYN3221", /* HP 15-ay000 */
183 NULL
184 };
185
186 static const char * const forcepad_pnp_ids[] = {
187 "SYN300D",
188 "SYN3014",
189 NULL
190 };
191
192 /*
193 * Send a command to the synpatics touchpad by special commands
194 */
195 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
196 {
197 int error;
198
199 error = ps2_sliced_command(&psmouse->ps2dev, cmd);
200 if (error)
201 return error;
202
203 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
204 if (error)
205 return error;
206
207 return 0;
208 }
209
210 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
211 {
212 int error;
213 union {
214 __be32 be_val;
215 char buf[4];
216 } resp = { 0 };
217
218 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
219 if (error)
220 return error;
221
222 *val = be32_to_cpu(resp.be_val);
223 return 0;
224 }
225
226 /*
227 * Identify Touchpad
228 * See also the SYN_ID_* macros
229 */
230 static int synaptics_identify(struct psmouse *psmouse,
231 struct synaptics_device_info *info)
232 {
233 int error;
234
235 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
236 if (error)
237 return error;
238
239 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
240 }
241
242 /*
243 * Read the model-id bytes from the touchpad
244 * see also SYN_MODEL_* macros
245 */
246 static int synaptics_model_id(struct psmouse *psmouse,
247 struct synaptics_device_info *info)
248 {
249 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
250 }
251
252 /*
253 * Read the firmware id from the touchpad
254 */
255 static int synaptics_firmware_id(struct psmouse *psmouse,
256 struct synaptics_device_info *info)
257 {
258 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
259 &info->firmware_id);
260 }
261
262 /*
263 * Read the board id and the "More Extended Queries" from the touchpad
264 * The board id is encoded in the "QUERY MODES" response
265 */
266 static int synaptics_query_modes(struct psmouse *psmouse,
267 struct synaptics_device_info *info)
268 {
269 u8 bid[3];
270 int error;
271
272 /* firmwares prior 7.5 have no board_id encoded */
273 if (SYN_ID_FULL(info->identity) < 0x705)
274 return 0;
275
276 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
277 if (error)
278 return error;
279
280 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
281
282 if (SYN_MEXT_CAP_BIT(bid[0]))
283 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
284 &info->ext_cap_10);
285
286 return 0;
287 }
288
289 /*
290 * Read the capability-bits from the touchpad
291 * see also the SYN_CAP_* macros
292 */
293 static int synaptics_capability(struct psmouse *psmouse,
294 struct synaptics_device_info *info)
295 {
296 int error;
297
298 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
299 &info->capabilities);
300 if (error)
301 return error;
302
303 info->ext_cap = info->ext_cap_0c = 0;
304
305 /*
306 * Older firmwares had submodel ID fixed to 0x47
307 */
308 if (SYN_ID_FULL(info->identity) < 0x705 &&
309 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
310 return -ENXIO;
311 }
312
313 /*
314 * Unless capExtended is set the rest of the flags should be ignored
315 */
316 if (!SYN_CAP_EXTENDED(info->capabilities))
317 info->capabilities = 0;
318
319 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
320 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
321 &info->ext_cap);
322 if (error) {
323 psmouse_warn(psmouse,
324 "device claims to have extended capabilities, but I'm not able to read them.\n");
325 } else {
326 /*
327 * if nExtBtn is greater than 8 it should be considered
328 * invalid and treated as 0
329 */
330 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
331 info->ext_cap &= ~SYN_CAP_MB_MASK;
332 }
333 }
334
335 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
336 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
337 &info->ext_cap_0c);
338 if (error)
339 psmouse_warn(psmouse,
340 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
341 }
342
343 return 0;
344 }
345
346 /*
347 * Read touchpad resolution and maximum reported coordinates
348 * Resolution is left zero if touchpad does not support the query
349 */
350 static int synaptics_resolution(struct psmouse *psmouse,
351 struct synaptics_device_info *info)
352 {
353 u8 resp[3];
354 int error;
355
356 if (SYN_ID_MAJOR(info->identity) < 4)
357 return 0;
358
359 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
360 if (!error) {
361 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
362 info->x_res = resp[0]; /* x resolution in units/mm */
363 info->y_res = resp[2]; /* y resolution in units/mm */
364 }
365 }
366
367 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
368 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
369 error = synaptics_send_cmd(psmouse,
370 SYN_QUE_EXT_MAX_COORDS, resp);
371 if (error) {
372 psmouse_warn(psmouse,
373 "device claims to have max coordinates query, but I'm not able to read it.\n");
374 } else {
375 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
376 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
377 psmouse_info(psmouse,
378 "queried max coordinates: x [..%d], y [..%d]\n",
379 info->x_max, info->y_max);
380 }
381 }
382
383 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
384 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
385 /*
386 * Firmware v8.1 does not report proper number of extended
387 * capabilities, but has been proven to report correct min
388 * coordinates.
389 */
390 SYN_ID_FULL(info->identity) == 0x801)) {
391 error = synaptics_send_cmd(psmouse,
392 SYN_QUE_EXT_MIN_COORDS, resp);
393 if (error) {
394 psmouse_warn(psmouse,
395 "device claims to have min coordinates query, but I'm not able to read it.\n");
396 } else {
397 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
398 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
399 psmouse_info(psmouse,
400 "queried min coordinates: x [%d..], y [%d..]\n",
401 info->x_min, info->y_min);
402 }
403 }
404
405 return 0;
406 }
407
408 static int synaptics_query_hardware(struct psmouse *psmouse,
409 struct synaptics_device_info *info)
410 {
411 int error;
412
413 memset(info, 0, sizeof(*info));
414
415 error = synaptics_identify(psmouse, info);
416 if (error)
417 return error;
418
419 error = synaptics_model_id(psmouse, info);
420 if (error)
421 return error;
422
423 error = synaptics_firmware_id(psmouse, info);
424 if (error)
425 return error;
426
427 error = synaptics_query_modes(psmouse, info);
428 if (error)
429 return error;
430
431 error = synaptics_capability(psmouse, info);
432 if (error)
433 return error;
434
435 error = synaptics_resolution(psmouse, info);
436 if (error)
437 return error;
438
439 return 0;
440 }
441
442 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
443
444 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
445
446 static bool cr48_profile_sensor;
447
448 #define ANY_BOARD_ID 0
449 struct min_max_quirk {
450 const char * const *pnp_ids;
451 struct {
452 u32 min, max;
453 } board_id;
454 u32 x_min, x_max, y_min, y_max;
455 };
456
457 static const struct min_max_quirk min_max_pnpid_table[] = {
458 {
459 (const char * const []){"LEN0033", NULL},
460 {ANY_BOARD_ID, ANY_BOARD_ID},
461 1024, 5052, 2258, 4832
462 },
463 {
464 (const char * const []){"LEN0042", NULL},
465 {ANY_BOARD_ID, ANY_BOARD_ID},
466 1232, 5710, 1156, 4696
467 },
468 {
469 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
470 "LEN0039", "LEN2002", "LEN2004",
471 NULL},
472 {ANY_BOARD_ID, 2961},
473 1024, 5112, 2024, 4832
474 },
475 {
476 (const char * const []){"LEN2000", NULL},
477 {ANY_BOARD_ID, ANY_BOARD_ID},
478 1024, 5113, 2021, 4832
479 },
480 {
481 (const char * const []){"LEN2001", NULL},
482 {ANY_BOARD_ID, ANY_BOARD_ID},
483 1024, 5022, 2508, 4832
484 },
485 {
486 (const char * const []){"LEN2006", NULL},
487 {2691, 2691},
488 1024, 5045, 2457, 4832
489 },
490 {
491 (const char * const []){"LEN2006", NULL},
492 {ANY_BOARD_ID, ANY_BOARD_ID},
493 1264, 5675, 1171, 4688
494 },
495 { }
496 };
497
498 /*****************************************************************************
499 * Synaptics communications functions
500 ****************************************************************************/
501
502 /*
503 * Synaptics touchpads report the y coordinate from bottom to top, which is
504 * opposite from what userspace expects.
505 * This function is used to invert y before reporting.
506 */
507 static int synaptics_invert_y(int y)
508 {
509 return YMAX_NOMINAL + YMIN_NOMINAL - y;
510 }
511
512 /*
513 * Apply quirk(s) if the hardware matches
514 */
515 static void synaptics_apply_quirks(struct psmouse *psmouse,
516 struct synaptics_device_info *info)
517 {
518 int i;
519
520 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
521 if (!psmouse_matches_pnp_id(psmouse,
522 min_max_pnpid_table[i].pnp_ids))
523 continue;
524
525 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
526 info->board_id < min_max_pnpid_table[i].board_id.min)
527 continue;
528
529 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
530 info->board_id > min_max_pnpid_table[i].board_id.max)
531 continue;
532
533 info->x_min = min_max_pnpid_table[i].x_min;
534 info->x_max = min_max_pnpid_table[i].x_max;
535 info->y_min = min_max_pnpid_table[i].y_min;
536 info->y_max = min_max_pnpid_table[i].y_max;
537 psmouse_info(psmouse,
538 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
539 info->x_min, info->x_max,
540 info->y_min, info->y_max);
541 break;
542 }
543 }
544
545 static bool synaptics_has_agm(struct synaptics_data *priv)
546 {
547 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
548 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
549 }
550
551 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
552 {
553 static u8 param = 0xc8;
554 int error;
555
556 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
557 if (error)
558 return error;
559
560 error = ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE);
561 if (error)
562 return error;
563
564 return 0;
565 }
566
567 static int synaptics_set_mode(struct psmouse *psmouse)
568 {
569 struct synaptics_data *priv = psmouse->private;
570 int error;
571
572 priv->mode = 0;
573 if (priv->absolute_mode)
574 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
575 if (priv->disable_gesture)
576 priv->mode |= SYN_BIT_DISABLE_GESTURE;
577 if (psmouse->rate >= 80)
578 priv->mode |= SYN_BIT_HIGH_RATE;
579 if (SYN_CAP_EXTENDED(priv->info.capabilities))
580 priv->mode |= SYN_BIT_W_MODE;
581
582 error = synaptics_mode_cmd(psmouse, priv->mode);
583 if (error)
584 return error;
585
586 if (priv->absolute_mode && synaptics_has_agm(priv)) {
587 error = synaptics_set_advanced_gesture_mode(psmouse);
588 if (error) {
589 psmouse_err(psmouse,
590 "Advanced gesture mode init failed: %d\n",
591 error);
592 return error;
593 }
594 }
595
596 return 0;
597 }
598
599 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
600 {
601 struct synaptics_data *priv = psmouse->private;
602
603 if (rate >= 80) {
604 priv->mode |= SYN_BIT_HIGH_RATE;
605 psmouse->rate = 80;
606 } else {
607 priv->mode &= ~SYN_BIT_HIGH_RATE;
608 psmouse->rate = 40;
609 }
610
611 synaptics_mode_cmd(psmouse, priv->mode);
612 }
613
614 /*****************************************************************************
615 * Synaptics pass-through PS/2 port support
616 ****************************************************************************/
617 static int synaptics_pt_write(struct serio *serio, u8 c)
618 {
619 struct psmouse *parent = serio_get_drvdata(serio->parent);
620 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
621 int error;
622
623 error = ps2_sliced_command(&parent->ps2dev, c);
624 if (error)
625 return error;
626
627 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
628 if (error)
629 return error;
630
631 return 0;
632 }
633
634 static int synaptics_pt_start(struct serio *serio)
635 {
636 struct psmouse *parent = serio_get_drvdata(serio->parent);
637 struct synaptics_data *priv = parent->private;
638
639 serio_pause_rx(parent->ps2dev.serio);
640 priv->pt_port = serio;
641 serio_continue_rx(parent->ps2dev.serio);
642
643 return 0;
644 }
645
646 static void synaptics_pt_stop(struct serio *serio)
647 {
648 struct psmouse *parent = serio_get_drvdata(serio->parent);
649 struct synaptics_data *priv = parent->private;
650
651 serio_pause_rx(parent->ps2dev.serio);
652 priv->pt_port = NULL;
653 serio_continue_rx(parent->ps2dev.serio);
654 }
655
656 static int synaptics_is_pt_packet(u8 *buf)
657 {
658 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
659 }
660
661 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
662 {
663 struct psmouse *child = serio_get_drvdata(ptport);
664
665 if (child && child->state == PSMOUSE_ACTIVATED) {
666 serio_interrupt(ptport, packet[1], 0);
667 serio_interrupt(ptport, packet[4], 0);
668 serio_interrupt(ptport, packet[5], 0);
669 if (child->pktsize == 4)
670 serio_interrupt(ptport, packet[2], 0);
671 } else {
672 serio_interrupt(ptport, packet[1], 0);
673 }
674 }
675
676 static void synaptics_pt_activate(struct psmouse *psmouse)
677 {
678 struct synaptics_data *priv = psmouse->private;
679 struct psmouse *child = serio_get_drvdata(priv->pt_port);
680
681 /* adjust the touchpad to child's choice of protocol */
682 if (child) {
683 if (child->pktsize == 4)
684 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
685 else
686 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
687
688 if (synaptics_mode_cmd(psmouse, priv->mode))
689 psmouse_warn(psmouse,
690 "failed to switch guest protocol\n");
691 }
692 }
693
694 static void synaptics_pt_create(struct psmouse *psmouse)
695 {
696 struct serio *serio;
697
698 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
699 if (!serio) {
700 psmouse_err(psmouse,
701 "not enough memory for pass-through port\n");
702 return;
703 }
704
705 serio->id.type = SERIO_PS_PSTHRU;
706 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
707 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
708 serio->write = synaptics_pt_write;
709 serio->start = synaptics_pt_start;
710 serio->stop = synaptics_pt_stop;
711 serio->parent = psmouse->ps2dev.serio;
712
713 psmouse->pt_activate = synaptics_pt_activate;
714
715 psmouse_info(psmouse, "serio: %s port at %s\n",
716 serio->name, psmouse->phys);
717 serio_register_port(serio);
718 }
719
720 /*****************************************************************************
721 * Functions to interpret the absolute mode packets
722 ****************************************************************************/
723
724 static void synaptics_parse_agm(const u8 buf[],
725 struct synaptics_data *priv,
726 struct synaptics_hw_state *hw)
727 {
728 struct synaptics_hw_state *agm = &priv->agm;
729 int agm_packet_type;
730
731 agm_packet_type = (buf[5] & 0x30) >> 4;
732 switch (agm_packet_type) {
733 case 1:
734 /* Gesture packet: (x, y, z) half resolution */
735 agm->w = hw->w;
736 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
737 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
738 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
739 break;
740
741 case 2:
742 /* AGM-CONTACT packet: we are only interested in the count */
743 priv->agm_count = buf[1];
744 break;
745
746 default:
747 break;
748 }
749 }
750
751 static void synaptics_parse_ext_buttons(const u8 buf[],
752 struct synaptics_data *priv,
753 struct synaptics_hw_state *hw)
754 {
755 unsigned int ext_bits =
756 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
757 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
758
759 hw->ext_buttons = buf[4] & ext_mask;
760 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
761 }
762
763 static int synaptics_parse_hw_state(const u8 buf[],
764 struct synaptics_data *priv,
765 struct synaptics_hw_state *hw)
766 {
767 memset(hw, 0, sizeof(struct synaptics_hw_state));
768
769 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
770 hw->w = (((buf[0] & 0x30) >> 2) |
771 ((buf[0] & 0x04) >> 1) |
772 ((buf[3] & 0x04) >> 2));
773
774 if (synaptics_has_agm(priv) && hw->w == 2) {
775 synaptics_parse_agm(buf, priv, hw);
776 return 1;
777 }
778
779 hw->x = (((buf[3] & 0x10) << 8) |
780 ((buf[1] & 0x0f) << 8) |
781 buf[4]);
782 hw->y = (((buf[3] & 0x20) << 7) |
783 ((buf[1] & 0xf0) << 4) |
784 buf[5]);
785 hw->z = buf[2];
786
787 hw->left = (buf[0] & 0x01) ? 1 : 0;
788 hw->right = (buf[0] & 0x02) ? 1 : 0;
789
790 if (priv->is_forcepad) {
791 /*
792 * ForcePads, like Clickpads, use middle button
793 * bits to report primary button clicks.
794 * Unfortunately they report primary button not
795 * only when user presses on the pad above certain
796 * threshold, but also when there are more than one
797 * finger on the touchpad, which interferes with
798 * out multi-finger gestures.
799 */
800 if (hw->z == 0) {
801 /* No contacts */
802 priv->press = priv->report_press = false;
803 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
804 /*
805 * Single-finger touch with pressure above
806 * the threshold. If pressure stays long
807 * enough, we'll start reporting primary
808 * button. We rely on the device continuing
809 * sending data even if finger does not
810 * move.
811 */
812 if (!priv->press) {
813 priv->press_start = jiffies;
814 priv->press = true;
815 } else if (time_after(jiffies,
816 priv->press_start +
817 msecs_to_jiffies(50))) {
818 priv->report_press = true;
819 }
820 } else {
821 priv->press = false;
822 }
823
824 hw->left = priv->report_press;
825
826 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
827 /*
828 * Clickpad's button is transmitted as middle button,
829 * however, since it is primary button, we will report
830 * it as BTN_LEFT.
831 */
832 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
833
834 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
835 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
836 if (hw->w == 2)
837 hw->scroll = (s8)buf[1];
838 }
839
840 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
841 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
842 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
843 }
844
845 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
846 ((buf[0] ^ buf[3]) & 0x02)) {
847 synaptics_parse_ext_buttons(buf, priv, hw);
848 }
849 } else {
850 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
851 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
852
853 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
854 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
855
856 hw->left = (buf[0] & 0x01) ? 1 : 0;
857 hw->right = (buf[0] & 0x02) ? 1 : 0;
858 }
859
860 /*
861 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
862 * is used by some firmware to indicate a finger at the edge of
863 * the touchpad whose precise position cannot be determined, so
864 * convert these values to the maximum axis value.
865 */
866 if (hw->x > X_MAX_POSITIVE)
867 hw->x -= 1 << ABS_POS_BITS;
868 else if (hw->x == X_MAX_POSITIVE)
869 hw->x = XMAX;
870
871 if (hw->y > Y_MAX_POSITIVE)
872 hw->y -= 1 << ABS_POS_BITS;
873 else if (hw->y == Y_MAX_POSITIVE)
874 hw->y = YMAX;
875
876 return 0;
877 }
878
879 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
880 bool active, int x, int y)
881 {
882 input_mt_slot(dev, slot);
883 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
884 if (active) {
885 input_report_abs(dev, ABS_MT_POSITION_X, x);
886 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
887 }
888 }
889
890 static void synaptics_report_semi_mt_data(struct input_dev *dev,
891 const struct synaptics_hw_state *a,
892 const struct synaptics_hw_state *b,
893 int num_fingers)
894 {
895 if (num_fingers >= 2) {
896 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
897 min(a->y, b->y));
898 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
899 max(a->y, b->y));
900 } else if (num_fingers == 1) {
901 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
902 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
903 } else {
904 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
905 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
906 }
907 }
908
909 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
910 const struct synaptics_hw_state *hw)
911 {
912 struct input_dev *dev = psmouse->dev;
913 struct synaptics_data *priv = psmouse->private;
914 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
915 int i;
916
917 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
918 return;
919
920 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
921 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
922 SYN_ID_FULL(priv->info.identity) == 0x802) &&
923 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
924 return;
925
926 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
927 for (i = 0; i < ext_bits; i++) {
928 input_report_key(dev, BTN_0 + 2 * i,
929 hw->ext_buttons & BIT(i));
930 input_report_key(dev, BTN_1 + 2 * i,
931 hw->ext_buttons & BIT(i + ext_bits));
932 }
933 return;
934 }
935
936 /*
937 * This generation of touchpads has the trackstick buttons
938 * physically wired to the touchpad. Re-route them through
939 * the pass-through interface.
940 */
941 if (priv->pt_port) {
942 u8 pt_buttons;
943
944 /* The trackstick expects at most 3 buttons */
945 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
946 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
947 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
948
949 serio_interrupt(priv->pt_port,
950 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
951 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
952 }
953 }
954
955 static void synaptics_report_buttons(struct psmouse *psmouse,
956 const struct synaptics_hw_state *hw)
957 {
958 struct input_dev *dev = psmouse->dev;
959 struct synaptics_data *priv = psmouse->private;
960
961 input_report_key(dev, BTN_LEFT, hw->left);
962 input_report_key(dev, BTN_RIGHT, hw->right);
963
964 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
965 input_report_key(dev, BTN_MIDDLE, hw->middle);
966
967 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
968 input_report_key(dev, BTN_FORWARD, hw->up);
969 input_report_key(dev, BTN_BACK, hw->down);
970 }
971
972 synaptics_report_ext_buttons(psmouse, hw);
973 }
974
975 static void synaptics_report_mt_data(struct psmouse *psmouse,
976 const struct synaptics_hw_state *sgm,
977 int num_fingers)
978 {
979 struct input_dev *dev = psmouse->dev;
980 struct synaptics_data *priv = psmouse->private;
981 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
982 struct input_mt_pos pos[2];
983 int slot[2], nsemi, i;
984
985 nsemi = clamp_val(num_fingers, 0, 2);
986
987 for (i = 0; i < nsemi; i++) {
988 pos[i].x = hw[i]->x;
989 pos[i].y = synaptics_invert_y(hw[i]->y);
990 }
991
992 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
993
994 for (i = 0; i < nsemi; i++) {
995 input_mt_slot(dev, slot[i]);
996 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
997 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
998 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
999 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
1000 }
1001
1002 input_mt_drop_unused(dev);
1003
1004 /* Don't use active slot count to generate BTN_TOOL events. */
1005 input_mt_report_pointer_emulation(dev, false);
1006
1007 /* Send the number of fingers reported by touchpad itself. */
1008 input_mt_report_finger_count(dev, num_fingers);
1009
1010 synaptics_report_buttons(psmouse, sgm);
1011
1012 input_sync(dev);
1013 }
1014
1015 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1016 struct synaptics_hw_state *sgm)
1017 {
1018 struct synaptics_data *priv = psmouse->private;
1019 int num_fingers;
1020
1021 /*
1022 * Update mt_state using the new finger count and current mt_state.
1023 */
1024 if (sgm->z == 0)
1025 num_fingers = 0;
1026 else if (sgm->w >= 4)
1027 num_fingers = 1;
1028 else if (sgm->w == 0)
1029 num_fingers = 2;
1030 else if (sgm->w == 1)
1031 num_fingers = priv->agm_count ? priv->agm_count : 3;
1032 else
1033 num_fingers = 4;
1034
1035 /* Send resulting input events to user space */
1036 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1037 }
1038
1039 static bool synaptics_has_multifinger(struct synaptics_data *priv)
1040 {
1041 if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
1042 return true;
1043
1044 /* Advanced gesture mode also sends multi finger data */
1045 return synaptics_has_agm(priv);
1046 }
1047
1048 /*
1049 * called for each full received packet from the touchpad
1050 */
1051 static void synaptics_process_packet(struct psmouse *psmouse)
1052 {
1053 struct input_dev *dev = psmouse->dev;
1054 struct synaptics_data *priv = psmouse->private;
1055 struct synaptics_device_info *info = &priv->info;
1056 struct synaptics_hw_state hw;
1057 int num_fingers;
1058 int finger_width;
1059
1060 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1061 return;
1062
1063 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1064 synaptics_image_sensor_process(psmouse, &hw);
1065 return;
1066 }
1067
1068 if (hw.scroll) {
1069 priv->scroll += hw.scroll;
1070
1071 while (priv->scroll >= 4) {
1072 input_report_key(dev, BTN_BACK, !hw.down);
1073 input_sync(dev);
1074 input_report_key(dev, BTN_BACK, hw.down);
1075 input_sync(dev);
1076 priv->scroll -= 4;
1077 }
1078 while (priv->scroll <= -4) {
1079 input_report_key(dev, BTN_FORWARD, !hw.up);
1080 input_sync(dev);
1081 input_report_key(dev, BTN_FORWARD, hw.up);
1082 input_sync(dev);
1083 priv->scroll += 4;
1084 }
1085 return;
1086 }
1087
1088 if (hw.z > 0 && hw.x > 1) {
1089 num_fingers = 1;
1090 finger_width = 5;
1091 if (SYN_CAP_EXTENDED(info->capabilities)) {
1092 switch (hw.w) {
1093 case 0 ... 1:
1094 if (synaptics_has_multifinger(priv))
1095 num_fingers = hw.w + 2;
1096 break;
1097 case 2:
1098 if (SYN_MODEL_PEN(info->model_id))
1099 ; /* Nothing, treat a pen as a single finger */
1100 break;
1101 case 4 ... 15:
1102 if (SYN_CAP_PALMDETECT(info->capabilities))
1103 finger_width = hw.w;
1104 break;
1105 }
1106 }
1107 } else {
1108 num_fingers = 0;
1109 finger_width = 0;
1110 }
1111
1112 if (cr48_profile_sensor) {
1113 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1114 return;
1115 }
1116
1117 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1118 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1119 num_fingers);
1120
1121 /* Post events
1122 * BTN_TOUCH has to be first as mousedev relies on it when doing
1123 * absolute -> relative conversion
1124 */
1125 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1126 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1127
1128 if (num_fingers > 0) {
1129 input_report_abs(dev, ABS_X, hw.x);
1130 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1131 }
1132 input_report_abs(dev, ABS_PRESSURE, hw.z);
1133
1134 if (SYN_CAP_PALMDETECT(info->capabilities))
1135 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1136
1137 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1138 if (synaptics_has_multifinger(priv)) {
1139 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1140 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1141 }
1142
1143 synaptics_report_buttons(psmouse, &hw);
1144
1145 input_sync(dev);
1146 }
1147
1148 static bool synaptics_validate_byte(struct psmouse *psmouse,
1149 int idx, enum synaptics_pkt_type pkt_type)
1150 {
1151 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1152 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1153 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1154 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1155 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1156 const u8 *packet = psmouse->packet;
1157
1158 if (idx < 0 || idx > 4)
1159 return false;
1160
1161 switch (pkt_type) {
1162
1163 case SYN_NEWABS:
1164 case SYN_NEWABS_RELAXED:
1165 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1166
1167 case SYN_NEWABS_STRICT:
1168 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1169
1170 case SYN_OLDABS:
1171 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1172
1173 default:
1174 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1175 return false;
1176 }
1177 }
1178
1179 static enum synaptics_pkt_type
1180 synaptics_detect_pkt_type(struct psmouse *psmouse)
1181 {
1182 int i;
1183
1184 for (i = 0; i < 5; i++) {
1185 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1186 psmouse_info(psmouse, "using relaxed packet validation\n");
1187 return SYN_NEWABS_RELAXED;
1188 }
1189 }
1190
1191 return SYN_NEWABS_STRICT;
1192 }
1193
1194 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1195 {
1196 struct synaptics_data *priv = psmouse->private;
1197
1198 if (psmouse->pktcnt >= 6) { /* Full packet received */
1199 if (unlikely(priv->pkt_type == SYN_NEWABS))
1200 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1201
1202 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1203 synaptics_is_pt_packet(psmouse->packet)) {
1204 if (priv->pt_port)
1205 synaptics_pass_pt_packet(priv->pt_port,
1206 psmouse->packet);
1207 } else
1208 synaptics_process_packet(psmouse);
1209
1210 return PSMOUSE_FULL_PACKET;
1211 }
1212
1213 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1214 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1215 }
1216
1217 /*****************************************************************************
1218 * Driver initialization/cleanup functions
1219 ****************************************************************************/
1220 static void set_abs_position_params(struct input_dev *dev,
1221 struct synaptics_device_info *info,
1222 int x_code, int y_code)
1223 {
1224 int x_min = info->x_min ?: XMIN_NOMINAL;
1225 int x_max = info->x_max ?: XMAX_NOMINAL;
1226 int y_min = info->y_min ?: YMIN_NOMINAL;
1227 int y_max = info->y_max ?: YMAX_NOMINAL;
1228 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1229 SYN_REDUCED_FILTER_FUZZ : 0;
1230
1231 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1232 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1233 input_abs_set_res(dev, x_code, info->x_res);
1234 input_abs_set_res(dev, y_code, info->y_res);
1235 }
1236
1237 static int set_input_params(struct psmouse *psmouse,
1238 struct synaptics_data *priv)
1239 {
1240 struct input_dev *dev = psmouse->dev;
1241 struct synaptics_device_info *info = &priv->info;
1242 int i;
1243 int error;
1244
1245 /* Reset default psmouse capabilities */
1246 __clear_bit(EV_REL, dev->evbit);
1247 bitmap_zero(dev->relbit, REL_CNT);
1248 bitmap_zero(dev->keybit, KEY_CNT);
1249
1250 /* Things that apply to both modes */
1251 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1252
1253 input_set_capability(dev, EV_KEY, BTN_LEFT);
1254
1255 /* Clickpads report only left button */
1256 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1257 input_set_capability(dev, EV_KEY, BTN_RIGHT);
1258 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1259 input_set_capability(dev, EV_KEY, BTN_MIDDLE);
1260 }
1261
1262 if (!priv->absolute_mode) {
1263 /* Relative mode */
1264 input_set_capability(dev, EV_REL, REL_X);
1265 input_set_capability(dev, EV_REL, REL_Y);
1266 return 0;
1267 }
1268
1269 /* Absolute mode */
1270 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1271 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1272
1273 if (cr48_profile_sensor)
1274 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1275
1276 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1277 set_abs_position_params(dev, info,
1278 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1279 /* Image sensors can report per-contact pressure */
1280 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1281
1282 error = input_mt_init_slots(dev, 2,
1283 INPUT_MT_POINTER | INPUT_MT_TRACK);
1284 if (error)
1285 return error;
1286
1287 /* Image sensors can signal 4 and 5 finger clicks */
1288 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
1289 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
1290 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1291 set_abs_position_params(dev, info,
1292 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1293 /*
1294 * Profile sensor in CR-48 tracks contacts reasonably well,
1295 * other non-image sensors with AGM use semi-mt.
1296 */
1297 error = input_mt_init_slots(dev, 2,
1298 INPUT_MT_POINTER |
1299 (cr48_profile_sensor ?
1300 INPUT_MT_TRACK :
1301 INPUT_MT_SEMI_MT));
1302 if (error)
1303 return error;
1304
1305 /*
1306 * For semi-mt devices we send ABS_X/Y ourselves instead of
1307 * input_mt_report_pointer_emulation. But
1308 * input_mt_init_slots() resets the fuzz to 0, leading to a
1309 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X
1310 * position. Let's re-initialize ABS_X/Y here.
1311 */
1312 if (!cr48_profile_sensor)
1313 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1314 }
1315
1316 if (SYN_CAP_PALMDETECT(info->capabilities))
1317 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1318
1319 input_set_capability(dev, EV_KEY, BTN_TOUCH);
1320 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
1321
1322 if (synaptics_has_multifinger(priv)) {
1323 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
1324 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
1325 }
1326
1327 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1328 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1329 input_set_capability(dev, EV_KEY, BTN_FORWARD);
1330 input_set_capability(dev, EV_KEY, BTN_BACK);
1331 }
1332
1333 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1334 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1335 input_set_capability(dev, EV_KEY, BTN_0 + i);
1336
1337 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1338 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1339 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1340 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1341 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1342 }
1343
1344 return 0;
1345 }
1346
1347 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1348 void *data, char *buf)
1349 {
1350 struct synaptics_data *priv = psmouse->private;
1351
1352 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1353 }
1354
1355 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1356 void *data, const char *buf,
1357 size_t len)
1358 {
1359 struct synaptics_data *priv = psmouse->private;
1360 unsigned int value;
1361 int err;
1362
1363 err = kstrtouint(buf, 10, &value);
1364 if (err)
1365 return err;
1366
1367 if (value > 1)
1368 return -EINVAL;
1369
1370 if (value == priv->disable_gesture)
1371 return len;
1372
1373 priv->disable_gesture = value;
1374 if (value)
1375 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1376 else
1377 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1378
1379 if (synaptics_mode_cmd(psmouse, priv->mode))
1380 return -EIO;
1381
1382 return len;
1383 }
1384
1385 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1386 synaptics_show_disable_gesture,
1387 synaptics_set_disable_gesture);
1388
1389 static void synaptics_disconnect(struct psmouse *psmouse)
1390 {
1391 struct synaptics_data *priv = psmouse->private;
1392
1393 /*
1394 * We might have left a breadcrumb when trying to
1395 * set up SMbus companion.
1396 */
1397 psmouse_smbus_cleanup(psmouse);
1398
1399 if (!priv->absolute_mode &&
1400 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1401 device_remove_file(&psmouse->ps2dev.serio->dev,
1402 &psmouse_attr_disable_gesture.dattr);
1403
1404 synaptics_reset(psmouse);
1405 kfree(priv);
1406 psmouse->private = NULL;
1407 }
1408
1409 static int synaptics_reconnect(struct psmouse *psmouse)
1410 {
1411 struct synaptics_data *priv = psmouse->private;
1412 struct synaptics_device_info info;
1413 u8 param[2];
1414 int retry = 0;
1415 int error;
1416
1417 do {
1418 psmouse_reset(psmouse);
1419 if (retry) {
1420 /*
1421 * On some boxes, right after resuming, the touchpad
1422 * needs some time to finish initializing (I assume
1423 * it needs time to calibrate) and start responding
1424 * to Synaptics-specific queries, so let's wait a
1425 * bit.
1426 */
1427 ssleep(1);
1428 }
1429 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1430 error = synaptics_detect(psmouse, 0);
1431 } while (error && ++retry < 3);
1432
1433 if (error)
1434 return error;
1435
1436 if (retry > 1)
1437 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1438
1439 error = synaptics_query_hardware(psmouse, &info);
1440 if (error) {
1441 psmouse_err(psmouse, "Unable to query device.\n");
1442 return error;
1443 }
1444
1445 error = synaptics_set_mode(psmouse);
1446 if (error) {
1447 psmouse_err(psmouse, "Unable to initialize device.\n");
1448 return error;
1449 }
1450
1451 if (info.identity != priv->info.identity ||
1452 info.model_id != priv->info.model_id ||
1453 info.capabilities != priv->info.capabilities ||
1454 info.ext_cap != priv->info.ext_cap) {
1455 psmouse_err(psmouse,
1456 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1457 priv->info.identity, info.identity,
1458 priv->info.model_id, info.model_id,
1459 priv->info.capabilities, info.capabilities,
1460 priv->info.ext_cap, info.ext_cap);
1461 return -ENXIO;
1462 }
1463
1464 return 0;
1465 }
1466
1467 static bool impaired_toshiba_kbc;
1468
1469 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1470 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1471 {
1472 /* Toshiba Satellite */
1473 .matches = {
1474 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1475 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1476 },
1477 },
1478 {
1479 /* Toshiba Dynabook */
1480 .matches = {
1481 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1482 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1483 },
1484 },
1485 {
1486 /* Toshiba Portege M300 */
1487 .matches = {
1488 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1489 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1490 },
1491
1492 },
1493 {
1494 /* Toshiba Portege M300 */
1495 .matches = {
1496 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1497 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1498 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1499 },
1500
1501 },
1502 #endif
1503 { }
1504 };
1505
1506 static bool broken_olpc_ec;
1507
1508 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1509 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1510 {
1511 /* OLPC XO-1 or XO-1.5 */
1512 .matches = {
1513 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1514 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1515 },
1516 },
1517 #endif
1518 { }
1519 };
1520
1521 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1522 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1523 {
1524 /* Cr-48 Chromebook (Codename Mario) */
1525 .matches = {
1526 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1527 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1528 },
1529 },
1530 #endif
1531 { }
1532 };
1533
1534 void __init synaptics_module_init(void)
1535 {
1536 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1537 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1538 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1539 }
1540
1541 static int synaptics_init_ps2(struct psmouse *psmouse,
1542 struct synaptics_device_info *info,
1543 bool absolute_mode)
1544 {
1545 struct synaptics_data *priv;
1546 int err;
1547
1548 synaptics_apply_quirks(psmouse, info);
1549
1550 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1551 if (!priv)
1552 return -ENOMEM;
1553
1554 priv->info = *info;
1555 priv->absolute_mode = absolute_mode;
1556 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1557 priv->disable_gesture = true;
1558
1559 /*
1560 * Unfortunately ForcePad capability is not exported over PS/2,
1561 * so we have to resort to checking PNP IDs.
1562 */
1563 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1564
1565 err = synaptics_set_mode(psmouse);
1566 if (err) {
1567 psmouse_err(psmouse, "Unable to initialize device.\n");
1568 goto init_fail;
1569 }
1570
1571 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1572 SYN_NEWABS : SYN_OLDABS;
1573
1574 psmouse_info(psmouse,
1575 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1576 SYN_ID_MODEL(info->identity),
1577 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1578 info->model_id,
1579 info->capabilities, info->ext_cap, info->ext_cap_0c,
1580 info->ext_cap_10, info->board_id, info->firmware_id);
1581
1582 err = set_input_params(psmouse, priv);
1583 if (err) {
1584 psmouse_err(psmouse,
1585 "failed to set up capabilities: %d\n", err);
1586 goto init_fail;
1587 }
1588
1589 /*
1590 * Encode touchpad model so that it can be used to set
1591 * input device->id.version and be visible to userspace.
1592 * Because version is __u16 we have to drop something.
1593 * Hardware info bits seem to be good candidates as they
1594 * are documented to be for Synaptics corp. internal use.
1595 */
1596 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1597 (info->model_id & 0x000000ff);
1598
1599 if (absolute_mode) {
1600 psmouse->protocol_handler = synaptics_process_byte;
1601 psmouse->pktsize = 6;
1602 } else {
1603 /* Relative mode follows standard PS/2 mouse protocol */
1604 psmouse->protocol_handler = psmouse_process_byte;
1605 psmouse->pktsize = 3;
1606 }
1607
1608 psmouse->set_rate = synaptics_set_rate;
1609 psmouse->disconnect = synaptics_disconnect;
1610 psmouse->reconnect = synaptics_reconnect;
1611 psmouse->cleanup = synaptics_reset;
1612 /* Synaptics can usually stay in sync without extra help */
1613 psmouse->resync_time = 0;
1614
1615 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1616 synaptics_pt_create(psmouse);
1617
1618 /*
1619 * Toshiba's KBC seems to have trouble handling data from
1620 * Synaptics at full rate. Switch to a lower rate (roughly
1621 * the same rate as a standard PS/2 mouse).
1622 */
1623 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1624 psmouse_info(psmouse,
1625 "Toshiba %s detected, limiting rate to 40pps.\n",
1626 dmi_get_system_info(DMI_PRODUCT_NAME));
1627 psmouse->rate = 40;
1628 }
1629
1630 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1631 err = device_create_file(&psmouse->ps2dev.serio->dev,
1632 &psmouse_attr_disable_gesture.dattr);
1633 if (err) {
1634 psmouse_err(psmouse,
1635 "Failed to create disable_gesture attribute (%d)",
1636 err);
1637 goto init_fail;
1638 }
1639 }
1640
1641 return 0;
1642
1643 init_fail:
1644 kfree(priv);
1645 return err;
1646 }
1647
1648 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1649 {
1650 struct synaptics_device_info info;
1651 int error;
1652
1653 psmouse_reset(psmouse);
1654
1655 error = synaptics_query_hardware(psmouse, &info);
1656 if (error) {
1657 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1658 return error;
1659 }
1660
1661 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1662 }
1663
1664 int synaptics_init_absolute(struct psmouse *psmouse)
1665 {
1666 return __synaptics_init(psmouse, true);
1667 }
1668
1669 int synaptics_init_relative(struct psmouse *psmouse)
1670 {
1671 return __synaptics_init(psmouse, false);
1672 }
1673
1674 static int synaptics_setup_ps2(struct psmouse *psmouse,
1675 struct synaptics_device_info *info)
1676 {
1677 bool absolute_mode = true;
1678 int error;
1679
1680 /*
1681 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1682 * packet spew overloads the EC such that key presses on the keyboard
1683 * are missed. Given that, don't even attempt to use Absolute mode.
1684 * Relative mode seems to work just fine.
1685 */
1686 if (broken_olpc_ec) {
1687 psmouse_info(psmouse,
1688 "OLPC XO detected, forcing relative protocol.\n");
1689 absolute_mode = false;
1690 }
1691
1692 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1693 if (error)
1694 return error;
1695
1696 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1697 }
1698
1699 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1700
1701 void __init synaptics_module_init(void)
1702 {
1703 }
1704
1705 static int __maybe_unused
1706 synaptics_setup_ps2(struct psmouse *psmouse,
1707 struct synaptics_device_info *info)
1708 {
1709 return -ENOSYS;
1710 }
1711
1712 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1713
1714 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1715
1716 /*
1717 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1718 * provides a better bandwidth and allow a better control of the touchpads.
1719 * This is used to decide if we need to use this bus or not.
1720 */
1721 enum {
1722 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1723 SYNAPTICS_INTERTOUCH_OFF,
1724 SYNAPTICS_INTERTOUCH_ON,
1725 };
1726
1727 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
1728 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
1729 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1730 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1731
1732 static int synaptics_create_intertouch(struct psmouse *psmouse,
1733 struct synaptics_device_info *info,
1734 bool leave_breadcrumbs)
1735 {
1736 bool topbuttonpad =
1737 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1738 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1739 const struct rmi_device_platform_data pdata = {
1740 .sensor_pdata = {
1741 .sensor_type = rmi_sensor_touchpad,
1742 .axis_align.flip_y = true,
1743 .kernel_tracking = false,
1744 .topbuttonpad = topbuttonpad,
1745 },
1746 .f30_data = {
1747 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1748 .trackstick_buttons =
1749 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1750 },
1751 };
1752 const struct i2c_board_info intertouch_board = {
1753 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1754 .flags = I2C_CLIENT_HOST_NOTIFY,
1755 };
1756
1757 return psmouse_smbus_init(psmouse, &intertouch_board,
1758 &pdata, sizeof(pdata), true,
1759 leave_breadcrumbs);
1760 }
1761
1762 /**
1763 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1764 * and decides to instantiate a SMBus InterTouch device.
1765 */
1766 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1767 struct synaptics_device_info *info,
1768 bool leave_breadcrumbs)
1769 {
1770 int error;
1771
1772 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1773 return -ENXIO;
1774
1775 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1776 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1777 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
1778
1779 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
1780 psmouse_info(psmouse,
1781 "Your touchpad (%s) says it can support a different bus. "
1782 "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",
1783 psmouse->ps2dev.serio->firmware_id);
1784
1785 return -ENXIO;
1786 }
1787 }
1788
1789 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1790
1791 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1792 if (error) {
1793 if (error == -EAGAIN)
1794 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1795 else
1796 psmouse_err(psmouse, "unable to create intertouch device\n");
1797
1798 return error;
1799 }
1800
1801 return 0;
1802 }
1803
1804 int synaptics_init_smbus(struct psmouse *psmouse)
1805 {
1806 struct synaptics_device_info info;
1807 int error;
1808
1809 psmouse_reset(psmouse);
1810
1811 error = synaptics_query_hardware(psmouse, &info);
1812 if (error) {
1813 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1814 return error;
1815 }
1816
1817 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1818 return -ENXIO;
1819
1820 return synaptics_create_intertouch(psmouse, &info, false);
1821 }
1822
1823 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1824
1825 static int __maybe_unused
1826 synaptics_setup_intertouch(struct psmouse *psmouse,
1827 struct synaptics_device_info *info,
1828 bool leave_breadcrumbs)
1829 {
1830 return -ENOSYS;
1831 }
1832
1833 int synaptics_init_smbus(struct psmouse *psmouse)
1834 {
1835 return -ENOSYS;
1836 }
1837
1838 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1839
1840 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1841 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1842
1843 int synaptics_init(struct psmouse *psmouse)
1844 {
1845 struct synaptics_device_info info;
1846 int error;
1847 int retval;
1848
1849 psmouse_reset(psmouse);
1850
1851 error = synaptics_query_hardware(psmouse, &info);
1852 if (error) {
1853 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1854 return error;
1855 }
1856
1857 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1858 if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
1859 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
1860 /* Forcepads need F21, which is not ready */
1861 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
1862 psmouse_warn(psmouse,
1863 "The touchpad can support a better bus than the too old PS/2 protocol. "
1864 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
1865 }
1866
1867 error = synaptics_setup_intertouch(psmouse, &info, true);
1868 if (!error)
1869 return PSMOUSE_SYNAPTICS_SMBUS;
1870 }
1871
1872 retval = synaptics_setup_ps2(psmouse, &info);
1873 if (retval < 0) {
1874 /*
1875 * Not using any flavor of Synaptics support, so clean up
1876 * SMbus breadcrumbs, if any.
1877 */
1878 psmouse_smbus_cleanup(psmouse);
1879 }
1880
1881 return retval;
1882 }
1883
1884 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1885
1886 int synaptics_init(struct psmouse *psmouse)
1887 {
1888 return -ENOSYS;
1889 }
1890
1891 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
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