]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/input/mouse/synaptics.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
MAINTAINERS: Update MAX77802 PMIC entry
[mirror_ubuntu-artful-kernel.git] / drivers / input / mouse / synaptics.c
1 /*
2 * Synaptics TouchPad PS/2 mouse driver
3 *
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
7 *
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
10 *
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
14 *
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
18 *
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
22 *
23 * Trademarks are the property of their respective owners.
24 */
25
26 #include <linux/module.h>
27 #include <linux/delay.h>
28 #include <linux/dmi.h>
29 #include <linux/input/mt.h>
30 #include <linux/serio.h>
31 #include <linux/libps2.h>
32 #include <linux/rmi.h>
33 #include <linux/i2c.h>
34 #include <linux/slab.h>
35 #include "psmouse.h"
36 #include "synaptics.h"
37
38 /*
39 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
40 * section 2.3.2, which says that they should be valid regardless of the
41 * actual size of the sensor.
42 * Note that newer firmware allows querying device for maximum useable
43 * coordinates.
44 */
45 #define XMIN 0
46 #define XMAX 6143
47 #define YMIN 0
48 #define YMAX 6143
49 #define XMIN_NOMINAL 1472
50 #define XMAX_NOMINAL 5472
51 #define YMIN_NOMINAL 1408
52 #define YMAX_NOMINAL 4448
53
54 /* Size in bits of absolute position values reported by the hardware */
55 #define ABS_POS_BITS 13
56
57 /*
58 * These values should represent the absolute maximum value that will
59 * be reported for a positive position value. Some Synaptics firmware
60 * uses this value to indicate a finger near the edge of the touchpad
61 * whose precise position cannot be determined.
62 *
63 * At least one touchpad is known to report positions in excess of this
64 * value which are actually negative values truncated to the 13-bit
65 * reporting range. These values have never been observed to be lower
66 * than 8184 (i.e. -8), so we treat all values greater than 8176 as
67 * negative and any other value as positive.
68 */
69 #define X_MAX_POSITIVE 8176
70 #define Y_MAX_POSITIVE 8176
71
72 /* maximum ABS_MT_POSITION displacement (in mm) */
73 #define DMAX 10
74
75 /*****************************************************************************
76 * Stuff we need even when we do not want native Synaptics support
77 ****************************************************************************/
78
79 /*
80 * Set the synaptics touchpad mode byte by special commands
81 */
82 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
83 {
84 u8 param[1];
85 int error;
86
87 error = psmouse_sliced_command(psmouse, mode);
88 if (error)
89 return error;
90
91 param[0] = SYN_PS_SET_MODE2;
92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
93 if (error)
94 return error;
95
96 return 0;
97 }
98
99 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
100 {
101 struct ps2dev *ps2dev = &psmouse->ps2dev;
102 u8 param[4];
103
104 param[0] = 0;
105
106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
108 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
109 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
110 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
111
112 if (param[1] != 0x47)
113 return -ENODEV;
114
115 if (set_properties) {
116 psmouse->vendor = "Synaptics";
117 psmouse->name = "TouchPad";
118 }
119
120 return 0;
121 }
122
123 void synaptics_reset(struct psmouse *psmouse)
124 {
125 /* reset touchpad back to relative mode, gestures enabled */
126 synaptics_mode_cmd(psmouse, 0);
127 }
128
129 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
130 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
131
132 /* This list has been kindly provided by Synaptics. */
133 static const char * const topbuttonpad_pnp_ids[] = {
134 "LEN0017",
135 "LEN0018",
136 "LEN0019",
137 "LEN0023",
138 "LEN002A",
139 "LEN002B",
140 "LEN002C",
141 "LEN002D",
142 "LEN002E",
143 "LEN0033", /* Helix */
144 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
145 "LEN0035", /* X240 */
146 "LEN0036", /* T440 */
147 "LEN0037", /* X1 Carbon 2nd */
148 "LEN0038",
149 "LEN0039", /* T440s */
150 "LEN0041",
151 "LEN0042", /* Yoga */
152 "LEN0045",
153 "LEN0047",
154 "LEN0049",
155 "LEN2000", /* S540 */
156 "LEN2001", /* Edge E431 */
157 "LEN2002", /* Edge E531 */
158 "LEN2003",
159 "LEN2004", /* L440 */
160 "LEN2005",
161 "LEN2006", /* Edge E440/E540 */
162 "LEN2007",
163 "LEN2008",
164 "LEN2009",
165 "LEN200A",
166 "LEN200B",
167 NULL
168 };
169
170 static const char * const smbus_pnp_ids[] = {
171 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
172 "LEN0048", /* X1 Carbon 3 */
173 "LEN0046", /* X250 */
174 "LEN004a", /* W541 */
175 "LEN200f", /* T450s */
176 NULL
177 };
178
179 /*
180 * Send a command to the synpatics touchpad by special commands
181 */
182 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
183 {
184 int error;
185
186 error = psmouse_sliced_command(psmouse, cmd);
187 if (error)
188 return error;
189
190 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
191 if (error)
192 return error;
193
194 return 0;
195 }
196
197 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
198 {
199 int error;
200 union {
201 __be32 be_val;
202 char buf[4];
203 } resp = { 0 };
204
205 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
206 if (error)
207 return error;
208
209 *val = be32_to_cpu(resp.be_val);
210 return 0;
211 }
212
213 /*
214 * Identify Touchpad
215 * See also the SYN_ID_* macros
216 */
217 static int synaptics_identify(struct psmouse *psmouse,
218 struct synaptics_device_info *info)
219 {
220 int error;
221
222 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
223 if (error)
224 return error;
225
226 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
227 }
228
229 /*
230 * Read the model-id bytes from the touchpad
231 * see also SYN_MODEL_* macros
232 */
233 static int synaptics_model_id(struct psmouse *psmouse,
234 struct synaptics_device_info *info)
235 {
236 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
237 }
238
239 /*
240 * Read the firmware id from the touchpad
241 */
242 static int synaptics_firmware_id(struct psmouse *psmouse,
243 struct synaptics_device_info *info)
244 {
245 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
246 &info->firmware_id);
247 }
248
249 /*
250 * Read the board id and the "More Extended Queries" from the touchpad
251 * The board id is encoded in the "QUERY MODES" response
252 */
253 static int synaptics_query_modes(struct psmouse *psmouse,
254 struct synaptics_device_info *info)
255 {
256 u8 bid[3];
257 int error;
258
259 /* firmwares prior 7.5 have no board_id encoded */
260 if (SYN_ID_FULL(info->identity) < 0x705)
261 return 0;
262
263 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
264 if (error)
265 return error;
266
267 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
268
269 if (SYN_MEXT_CAP_BIT(bid[0]))
270 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
271 &info->ext_cap_10);
272
273 return 0;
274 }
275
276 /*
277 * Read the capability-bits from the touchpad
278 * see also the SYN_CAP_* macros
279 */
280 static int synaptics_capability(struct psmouse *psmouse,
281 struct synaptics_device_info *info)
282 {
283 int error;
284
285 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
286 &info->capabilities);
287 if (error)
288 return error;
289
290 info->ext_cap = info->ext_cap_0c = 0;
291
292 /*
293 * Older firmwares had submodel ID fixed to 0x47
294 */
295 if (SYN_ID_FULL(info->identity) < 0x705 &&
296 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
297 return -ENXIO;
298 }
299
300 /*
301 * Unless capExtended is set the rest of the flags should be ignored
302 */
303 if (!SYN_CAP_EXTENDED(info->capabilities))
304 info->capabilities = 0;
305
306 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
307 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
308 &info->ext_cap);
309 if (error) {
310 psmouse_warn(psmouse,
311 "device claims to have extended capabilities, but I'm not able to read them.\n");
312 } else {
313 /*
314 * if nExtBtn is greater than 8 it should be considered
315 * invalid and treated as 0
316 */
317 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
318 info->ext_cap &= ~SYN_CAP_MB_MASK;
319 }
320 }
321
322 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
323 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
324 &info->ext_cap_0c);
325 if (error)
326 psmouse_warn(psmouse,
327 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
328 }
329
330 return 0;
331 }
332
333 /*
334 * Read touchpad resolution and maximum reported coordinates
335 * Resolution is left zero if touchpad does not support the query
336 */
337 static int synaptics_resolution(struct psmouse *psmouse,
338 struct synaptics_device_info *info)
339 {
340 u8 resp[3];
341 int error;
342
343 if (SYN_ID_MAJOR(info->identity) < 4)
344 return 0;
345
346 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
347 if (!error) {
348 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
349 info->x_res = resp[0]; /* x resolution in units/mm */
350 info->y_res = resp[2]; /* y resolution in units/mm */
351 }
352 }
353
354 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
355 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
356 error = synaptics_send_cmd(psmouse,
357 SYN_QUE_EXT_MAX_COORDS, resp);
358 if (error) {
359 psmouse_warn(psmouse,
360 "device claims to have max coordinates query, but I'm not able to read it.\n");
361 } else {
362 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
363 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
364 psmouse_info(psmouse,
365 "queried max coordinates: x [..%d], y [..%d]\n",
366 info->x_max, info->y_max);
367 }
368 }
369
370 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
371 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
372 /*
373 * Firmware v8.1 does not report proper number of extended
374 * capabilities, but has been proven to report correct min
375 * coordinates.
376 */
377 SYN_ID_FULL(info->identity) == 0x801)) {
378 error = synaptics_send_cmd(psmouse,
379 SYN_QUE_EXT_MIN_COORDS, resp);
380 if (error) {
381 psmouse_warn(psmouse,
382 "device claims to have min coordinates query, but I'm not able to read it.\n");
383 } else {
384 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
385 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
386 psmouse_info(psmouse,
387 "queried min coordinates: x [%d..], y [%d..]\n",
388 info->x_min, info->y_min);
389 }
390 }
391
392 return 0;
393 }
394
395 static int synaptics_query_hardware(struct psmouse *psmouse,
396 struct synaptics_device_info *info)
397 {
398 int error;
399
400 error = synaptics_identify(psmouse, info);
401 if (error)
402 return error;
403
404 error = synaptics_model_id(psmouse, info);
405 if (error)
406 return error;
407
408 error = synaptics_firmware_id(psmouse, info);
409 if (error)
410 return error;
411
412 error = synaptics_query_modes(psmouse, info);
413 if (error)
414 return error;
415
416 error = synaptics_capability(psmouse, info);
417 if (error)
418 return error;
419
420 error = synaptics_resolution(psmouse, info);
421 if (error)
422 return error;
423
424 return 0;
425 }
426
427 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
428
429 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
430
431 static bool cr48_profile_sensor;
432
433 #define ANY_BOARD_ID 0
434 struct min_max_quirk {
435 const char * const *pnp_ids;
436 struct {
437 u32 min, max;
438 } board_id;
439 u32 x_min, x_max, y_min, y_max;
440 };
441
442 static const struct min_max_quirk min_max_pnpid_table[] = {
443 {
444 (const char * const []){"LEN0033", NULL},
445 {ANY_BOARD_ID, ANY_BOARD_ID},
446 1024, 5052, 2258, 4832
447 },
448 {
449 (const char * const []){"LEN0042", NULL},
450 {ANY_BOARD_ID, ANY_BOARD_ID},
451 1232, 5710, 1156, 4696
452 },
453 {
454 (const char * const []){"LEN0034", "LEN0036", "LEN0037",
455 "LEN0039", "LEN2002", "LEN2004",
456 NULL},
457 {ANY_BOARD_ID, 2961},
458 1024, 5112, 2024, 4832
459 },
460 {
461 (const char * const []){"LEN2000", NULL},
462 {ANY_BOARD_ID, ANY_BOARD_ID},
463 1024, 5113, 2021, 4832
464 },
465 {
466 (const char * const []){"LEN2001", NULL},
467 {ANY_BOARD_ID, ANY_BOARD_ID},
468 1024, 5022, 2508, 4832
469 },
470 {
471 (const char * const []){"LEN2006", NULL},
472 {2691, 2691},
473 1024, 5045, 2457, 4832
474 },
475 {
476 (const char * const []){"LEN2006", NULL},
477 {ANY_BOARD_ID, ANY_BOARD_ID},
478 1264, 5675, 1171, 4688
479 },
480 { }
481 };
482
483 /* This list has been kindly provided by Synaptics. */
484 static const char * const forcepad_pnp_ids[] = {
485 "SYN300D",
486 "SYN3014",
487 NULL
488 };
489
490 /*****************************************************************************
491 * Synaptics communications functions
492 ****************************************************************************/
493
494 /*
495 * Synaptics touchpads report the y coordinate from bottom to top, which is
496 * opposite from what userspace expects.
497 * This function is used to invert y before reporting.
498 */
499 static int synaptics_invert_y(int y)
500 {
501 return YMAX_NOMINAL + YMIN_NOMINAL - y;
502 }
503
504 /*
505 * Apply quirk(s) if the hardware matches
506 */
507 static void synaptics_apply_quirks(struct psmouse *psmouse,
508 struct synaptics_device_info *info)
509 {
510 int i;
511
512 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
513 if (!psmouse_matches_pnp_id(psmouse,
514 min_max_pnpid_table[i].pnp_ids))
515 continue;
516
517 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
518 info->board_id < min_max_pnpid_table[i].board_id.min)
519 continue;
520
521 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
522 info->board_id > min_max_pnpid_table[i].board_id.max)
523 continue;
524
525 info->x_min = min_max_pnpid_table[i].x_min;
526 info->x_max = min_max_pnpid_table[i].x_max;
527 info->y_min = min_max_pnpid_table[i].y_min;
528 info->y_max = min_max_pnpid_table[i].y_max;
529 psmouse_info(psmouse,
530 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
531 info->x_min, info->x_max,
532 info->y_min, info->y_max);
533 break;
534 }
535 }
536
537 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
538 {
539 static u8 param = 0xc8;
540 struct synaptics_data *priv = psmouse->private;
541 int error;
542
543 if (!(SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
544 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)))
545 return 0;
546
547 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL);
548 if (error)
549 return error;
550
551 error = ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE);
552 if (error)
553 return error;
554
555 /* Advanced gesture mode also sends multi finger data */
556 priv->info.capabilities |= BIT(1);
557
558 return 0;
559 }
560
561 static int synaptics_set_mode(struct psmouse *psmouse)
562 {
563 struct synaptics_data *priv = psmouse->private;
564 int error;
565
566 priv->mode = 0;
567 if (priv->absolute_mode)
568 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
569 if (priv->disable_gesture)
570 priv->mode |= SYN_BIT_DISABLE_GESTURE;
571 if (psmouse->rate >= 80)
572 priv->mode |= SYN_BIT_HIGH_RATE;
573 if (SYN_CAP_EXTENDED(priv->info.capabilities))
574 priv->mode |= SYN_BIT_W_MODE;
575
576 error = synaptics_mode_cmd(psmouse, priv->mode);
577 if (error)
578 return error;
579
580 if (priv->absolute_mode) {
581 error = synaptics_set_advanced_gesture_mode(psmouse);
582 if (error) {
583 psmouse_err(psmouse,
584 "Advanced gesture mode init failed: %d\n",
585 error);
586 return error;
587 }
588 }
589
590 return 0;
591 }
592
593 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
594 {
595 struct synaptics_data *priv = psmouse->private;
596
597 if (rate >= 80) {
598 priv->mode |= SYN_BIT_HIGH_RATE;
599 psmouse->rate = 80;
600 } else {
601 priv->mode &= ~SYN_BIT_HIGH_RATE;
602 psmouse->rate = 40;
603 }
604
605 synaptics_mode_cmd(psmouse, priv->mode);
606 }
607
608 /*****************************************************************************
609 * Synaptics pass-through PS/2 port support
610 ****************************************************************************/
611 static int synaptics_pt_write(struct serio *serio, u8 c)
612 {
613 struct psmouse *parent = serio_get_drvdata(serio->parent);
614 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
615 int error;
616
617 error = psmouse_sliced_command(parent, c);
618 if (error)
619 return error;
620
621 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
622 if (error)
623 return error;
624
625 return 0;
626 }
627
628 static int synaptics_pt_start(struct serio *serio)
629 {
630 struct psmouse *parent = serio_get_drvdata(serio->parent);
631 struct synaptics_data *priv = parent->private;
632
633 serio_pause_rx(parent->ps2dev.serio);
634 priv->pt_port = serio;
635 serio_continue_rx(parent->ps2dev.serio);
636
637 return 0;
638 }
639
640 static void synaptics_pt_stop(struct serio *serio)
641 {
642 struct psmouse *parent = serio_get_drvdata(serio->parent);
643 struct synaptics_data *priv = parent->private;
644
645 serio_pause_rx(parent->ps2dev.serio);
646 priv->pt_port = NULL;
647 serio_continue_rx(parent->ps2dev.serio);
648 }
649
650 static int synaptics_is_pt_packet(u8 *buf)
651 {
652 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
653 }
654
655 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet)
656 {
657 struct psmouse *child = serio_get_drvdata(ptport);
658
659 if (child && child->state == PSMOUSE_ACTIVATED) {
660 serio_interrupt(ptport, packet[1], 0);
661 serio_interrupt(ptport, packet[4], 0);
662 serio_interrupt(ptport, packet[5], 0);
663 if (child->pktsize == 4)
664 serio_interrupt(ptport, packet[2], 0);
665 } else {
666 serio_interrupt(ptport, packet[1], 0);
667 }
668 }
669
670 static void synaptics_pt_activate(struct psmouse *psmouse)
671 {
672 struct synaptics_data *priv = psmouse->private;
673 struct psmouse *child = serio_get_drvdata(priv->pt_port);
674
675 /* adjust the touchpad to child's choice of protocol */
676 if (child) {
677 if (child->pktsize == 4)
678 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
679 else
680 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
681
682 if (synaptics_mode_cmd(psmouse, priv->mode))
683 psmouse_warn(psmouse,
684 "failed to switch guest protocol\n");
685 }
686 }
687
688 static void synaptics_pt_create(struct psmouse *psmouse)
689 {
690 struct serio *serio;
691
692 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
693 if (!serio) {
694 psmouse_err(psmouse,
695 "not enough memory for pass-through port\n");
696 return;
697 }
698
699 serio->id.type = SERIO_PS_PSTHRU;
700 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
701 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
702 serio->write = synaptics_pt_write;
703 serio->start = synaptics_pt_start;
704 serio->stop = synaptics_pt_stop;
705 serio->parent = psmouse->ps2dev.serio;
706
707 psmouse->pt_activate = synaptics_pt_activate;
708
709 psmouse_info(psmouse, "serio: %s port at %s\n",
710 serio->name, psmouse->phys);
711 serio_register_port(serio);
712 }
713
714 /*****************************************************************************
715 * Functions to interpret the absolute mode packets
716 ****************************************************************************/
717
718 static void synaptics_parse_agm(const u8 buf[],
719 struct synaptics_data *priv,
720 struct synaptics_hw_state *hw)
721 {
722 struct synaptics_hw_state *agm = &priv->agm;
723 int agm_packet_type;
724
725 agm_packet_type = (buf[5] & 0x30) >> 4;
726 switch (agm_packet_type) {
727 case 1:
728 /* Gesture packet: (x, y, z) half resolution */
729 agm->w = hw->w;
730 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
731 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
732 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
733 break;
734
735 case 2:
736 /* AGM-CONTACT packet: we are only interested in the count */
737 priv->agm_count = buf[1];
738 break;
739
740 default:
741 break;
742 }
743 }
744
745 static void synaptics_parse_ext_buttons(const u8 buf[],
746 struct synaptics_data *priv,
747 struct synaptics_hw_state *hw)
748 {
749 unsigned int ext_bits =
750 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
751 unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
752
753 hw->ext_buttons = buf[4] & ext_mask;
754 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
755 }
756
757 static int synaptics_parse_hw_state(const u8 buf[],
758 struct synaptics_data *priv,
759 struct synaptics_hw_state *hw)
760 {
761 memset(hw, 0, sizeof(struct synaptics_hw_state));
762
763 if (SYN_MODEL_NEWABS(priv->info.model_id)) {
764 hw->w = (((buf[0] & 0x30) >> 2) |
765 ((buf[0] & 0x04) >> 1) |
766 ((buf[3] & 0x04) >> 2));
767
768 if ((SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
769 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)) &&
770 hw->w == 2) {
771 synaptics_parse_agm(buf, priv, hw);
772 return 1;
773 }
774
775 hw->x = (((buf[3] & 0x10) << 8) |
776 ((buf[1] & 0x0f) << 8) |
777 buf[4]);
778 hw->y = (((buf[3] & 0x20) << 7) |
779 ((buf[1] & 0xf0) << 4) |
780 buf[5]);
781 hw->z = buf[2];
782
783 hw->left = (buf[0] & 0x01) ? 1 : 0;
784 hw->right = (buf[0] & 0x02) ? 1 : 0;
785
786 if (priv->is_forcepad) {
787 /*
788 * ForcePads, like Clickpads, use middle button
789 * bits to report primary button clicks.
790 * Unfortunately they report primary button not
791 * only when user presses on the pad above certain
792 * threshold, but also when there are more than one
793 * finger on the touchpad, which interferes with
794 * out multi-finger gestures.
795 */
796 if (hw->z == 0) {
797 /* No contacts */
798 priv->press = priv->report_press = false;
799 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
800 /*
801 * Single-finger touch with pressure above
802 * the threshold. If pressure stays long
803 * enough, we'll start reporting primary
804 * button. We rely on the device continuing
805 * sending data even if finger does not
806 * move.
807 */
808 if (!priv->press) {
809 priv->press_start = jiffies;
810 priv->press = true;
811 } else if (time_after(jiffies,
812 priv->press_start +
813 msecs_to_jiffies(50))) {
814 priv->report_press = true;
815 }
816 } else {
817 priv->press = false;
818 }
819
820 hw->left = priv->report_press;
821
822 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) {
823 /*
824 * Clickpad's button is transmitted as middle button,
825 * however, since it is primary button, we will report
826 * it as BTN_LEFT.
827 */
828 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
829
830 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) {
831 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
832 if (hw->w == 2)
833 hw->scroll = (s8)buf[1];
834 }
835
836 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
837 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
838 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
839 }
840
841 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 &&
842 ((buf[0] ^ buf[3]) & 0x02)) {
843 synaptics_parse_ext_buttons(buf, priv, hw);
844 }
845 } else {
846 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
847 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
848
849 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
850 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
851
852 hw->left = (buf[0] & 0x01) ? 1 : 0;
853 hw->right = (buf[0] & 0x02) ? 1 : 0;
854 }
855
856 /*
857 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
858 * is used by some firmware to indicate a finger at the edge of
859 * the touchpad whose precise position cannot be determined, so
860 * convert these values to the maximum axis value.
861 */
862 if (hw->x > X_MAX_POSITIVE)
863 hw->x -= 1 << ABS_POS_BITS;
864 else if (hw->x == X_MAX_POSITIVE)
865 hw->x = XMAX;
866
867 if (hw->y > Y_MAX_POSITIVE)
868 hw->y -= 1 << ABS_POS_BITS;
869 else if (hw->y == Y_MAX_POSITIVE)
870 hw->y = YMAX;
871
872 return 0;
873 }
874
875 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
876 bool active, int x, int y)
877 {
878 input_mt_slot(dev, slot);
879 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
880 if (active) {
881 input_report_abs(dev, ABS_MT_POSITION_X, x);
882 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
883 }
884 }
885
886 static void synaptics_report_semi_mt_data(struct input_dev *dev,
887 const struct synaptics_hw_state *a,
888 const struct synaptics_hw_state *b,
889 int num_fingers)
890 {
891 if (num_fingers >= 2) {
892 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
893 min(a->y, b->y));
894 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
895 max(a->y, b->y));
896 } else if (num_fingers == 1) {
897 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
898 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
899 } else {
900 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
901 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
902 }
903 }
904
905 static void synaptics_report_ext_buttons(struct psmouse *psmouse,
906 const struct synaptics_hw_state *hw)
907 {
908 struct input_dev *dev = psmouse->dev;
909 struct synaptics_data *priv = psmouse->private;
910 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
911 int i;
912
913 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
914 return;
915
916 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
917 if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
918 SYN_ID_FULL(priv->info.identity) == 0x802) &&
919 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
920 return;
921
922 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
923 for (i = 0; i < ext_bits; i++) {
924 input_report_key(dev, BTN_0 + 2 * i,
925 hw->ext_buttons & BIT(i));
926 input_report_key(dev, BTN_1 + 2 * i,
927 hw->ext_buttons & BIT(i + ext_bits));
928 }
929 return;
930 }
931
932 /*
933 * This generation of touchpads has the trackstick buttons
934 * physically wired to the touchpad. Re-route them through
935 * the pass-through interface.
936 */
937 if (priv->pt_port) {
938 u8 pt_buttons;
939
940 /* The trackstick expects at most 3 buttons */
941 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
942 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
943 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
944
945 serio_interrupt(priv->pt_port,
946 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
947 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
948 }
949 }
950
951 static void synaptics_report_buttons(struct psmouse *psmouse,
952 const struct synaptics_hw_state *hw)
953 {
954 struct input_dev *dev = psmouse->dev;
955 struct synaptics_data *priv = psmouse->private;
956
957 input_report_key(dev, BTN_LEFT, hw->left);
958 input_report_key(dev, BTN_RIGHT, hw->right);
959
960 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
961 input_report_key(dev, BTN_MIDDLE, hw->middle);
962
963 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
964 input_report_key(dev, BTN_FORWARD, hw->up);
965 input_report_key(dev, BTN_BACK, hw->down);
966 }
967
968 synaptics_report_ext_buttons(psmouse, hw);
969 }
970
971 static void synaptics_report_mt_data(struct psmouse *psmouse,
972 const struct synaptics_hw_state *sgm,
973 int num_fingers)
974 {
975 struct input_dev *dev = psmouse->dev;
976 struct synaptics_data *priv = psmouse->private;
977 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
978 struct input_mt_pos pos[2];
979 int slot[2], nsemi, i;
980
981 nsemi = clamp_val(num_fingers, 0, 2);
982
983 for (i = 0; i < nsemi; i++) {
984 pos[i].x = hw[i]->x;
985 pos[i].y = synaptics_invert_y(hw[i]->y);
986 }
987
988 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
989
990 for (i = 0; i < nsemi; i++) {
991 input_mt_slot(dev, slot[i]);
992 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
993 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
994 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
995 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
996 }
997
998 input_mt_drop_unused(dev);
999
1000 /* Don't use active slot count to generate BTN_TOOL events. */
1001 input_mt_report_pointer_emulation(dev, false);
1002
1003 /* Send the number of fingers reported by touchpad itself. */
1004 input_mt_report_finger_count(dev, num_fingers);
1005
1006 synaptics_report_buttons(psmouse, sgm);
1007
1008 input_sync(dev);
1009 }
1010
1011 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1012 struct synaptics_hw_state *sgm)
1013 {
1014 struct synaptics_data *priv = psmouse->private;
1015 int num_fingers;
1016
1017 /*
1018 * Update mt_state using the new finger count and current mt_state.
1019 */
1020 if (sgm->z == 0)
1021 num_fingers = 0;
1022 else if (sgm->w >= 4)
1023 num_fingers = 1;
1024 else if (sgm->w == 0)
1025 num_fingers = 2;
1026 else if (sgm->w == 1)
1027 num_fingers = priv->agm_count ? priv->agm_count : 3;
1028 else
1029 num_fingers = 4;
1030
1031 /* Send resulting input events to user space */
1032 synaptics_report_mt_data(psmouse, sgm, num_fingers);
1033 }
1034
1035 /*
1036 * called for each full received packet from the touchpad
1037 */
1038 static void synaptics_process_packet(struct psmouse *psmouse)
1039 {
1040 struct input_dev *dev = psmouse->dev;
1041 struct synaptics_data *priv = psmouse->private;
1042 struct synaptics_device_info *info = &priv->info;
1043 struct synaptics_hw_state hw;
1044 int num_fingers;
1045 int finger_width;
1046
1047 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1048 return;
1049
1050 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1051 synaptics_image_sensor_process(psmouse, &hw);
1052 return;
1053 }
1054
1055 if (hw.scroll) {
1056 priv->scroll += hw.scroll;
1057
1058 while (priv->scroll >= 4) {
1059 input_report_key(dev, BTN_BACK, !hw.down);
1060 input_sync(dev);
1061 input_report_key(dev, BTN_BACK, hw.down);
1062 input_sync(dev);
1063 priv->scroll -= 4;
1064 }
1065 while (priv->scroll <= -4) {
1066 input_report_key(dev, BTN_FORWARD, !hw.up);
1067 input_sync(dev);
1068 input_report_key(dev, BTN_FORWARD, hw.up);
1069 input_sync(dev);
1070 priv->scroll += 4;
1071 }
1072 return;
1073 }
1074
1075 if (hw.z > 0 && hw.x > 1) {
1076 num_fingers = 1;
1077 finger_width = 5;
1078 if (SYN_CAP_EXTENDED(info->capabilities)) {
1079 switch (hw.w) {
1080 case 0 ... 1:
1081 if (SYN_CAP_MULTIFINGER(info->capabilities))
1082 num_fingers = hw.w + 2;
1083 break;
1084 case 2:
1085 if (SYN_MODEL_PEN(info->model_id))
1086 ; /* Nothing, treat a pen as a single finger */
1087 break;
1088 case 4 ... 15:
1089 if (SYN_CAP_PALMDETECT(info->capabilities))
1090 finger_width = hw.w;
1091 break;
1092 }
1093 }
1094 } else {
1095 num_fingers = 0;
1096 finger_width = 0;
1097 }
1098
1099 if (cr48_profile_sensor) {
1100 synaptics_report_mt_data(psmouse, &hw, num_fingers);
1101 return;
1102 }
1103
1104 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c))
1105 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1106 num_fingers);
1107
1108 /* Post events
1109 * BTN_TOUCH has to be first as mousedev relies on it when doing
1110 * absolute -> relative conversion
1111 */
1112 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1113 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1114
1115 if (num_fingers > 0) {
1116 input_report_abs(dev, ABS_X, hw.x);
1117 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1118 }
1119 input_report_abs(dev, ABS_PRESSURE, hw.z);
1120
1121 if (SYN_CAP_PALMDETECT(info->capabilities))
1122 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1123
1124 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1125 if (SYN_CAP_MULTIFINGER(info->capabilities)) {
1126 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1127 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1128 }
1129
1130 synaptics_report_buttons(psmouse, &hw);
1131
1132 input_sync(dev);
1133 }
1134
1135 static bool synaptics_validate_byte(struct psmouse *psmouse,
1136 int idx, enum synaptics_pkt_type pkt_type)
1137 {
1138 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1139 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1140 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1141 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1142 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1143 const u8 *packet = psmouse->packet;
1144
1145 if (idx < 0 || idx > 4)
1146 return false;
1147
1148 switch (pkt_type) {
1149
1150 case SYN_NEWABS:
1151 case SYN_NEWABS_RELAXED:
1152 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1153
1154 case SYN_NEWABS_STRICT:
1155 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1156
1157 case SYN_OLDABS:
1158 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1159
1160 default:
1161 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1162 return false;
1163 }
1164 }
1165
1166 static enum synaptics_pkt_type
1167 synaptics_detect_pkt_type(struct psmouse *psmouse)
1168 {
1169 int i;
1170
1171 for (i = 0; i < 5; i++) {
1172 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1173 psmouse_info(psmouse, "using relaxed packet validation\n");
1174 return SYN_NEWABS_RELAXED;
1175 }
1176 }
1177
1178 return SYN_NEWABS_STRICT;
1179 }
1180
1181 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1182 {
1183 struct synaptics_data *priv = psmouse->private;
1184
1185 if (psmouse->pktcnt >= 6) { /* Full packet received */
1186 if (unlikely(priv->pkt_type == SYN_NEWABS))
1187 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1188
1189 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) &&
1190 synaptics_is_pt_packet(psmouse->packet)) {
1191 if (priv->pt_port)
1192 synaptics_pass_pt_packet(priv->pt_port,
1193 psmouse->packet);
1194 } else
1195 synaptics_process_packet(psmouse);
1196
1197 return PSMOUSE_FULL_PACKET;
1198 }
1199
1200 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1201 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1202 }
1203
1204 /*****************************************************************************
1205 * Driver initialization/cleanup functions
1206 ****************************************************************************/
1207 static void set_abs_position_params(struct input_dev *dev,
1208 struct synaptics_device_info *info,
1209 int x_code, int y_code)
1210 {
1211 int x_min = info->x_min ?: XMIN_NOMINAL;
1212 int x_max = info->x_max ?: XMAX_NOMINAL;
1213 int y_min = info->y_min ?: YMIN_NOMINAL;
1214 int y_max = info->y_max ?: YMAX_NOMINAL;
1215 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ?
1216 SYN_REDUCED_FILTER_FUZZ : 0;
1217
1218 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1219 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1220 input_abs_set_res(dev, x_code, info->x_res);
1221 input_abs_set_res(dev, y_code, info->y_res);
1222 }
1223
1224 static void set_input_params(struct psmouse *psmouse,
1225 struct synaptics_data *priv)
1226 {
1227 struct input_dev *dev = psmouse->dev;
1228 struct synaptics_device_info *info = &priv->info;
1229 int i;
1230
1231 /* Things that apply to both modes */
1232 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1233 __set_bit(EV_KEY, dev->evbit);
1234 __set_bit(BTN_LEFT, dev->keybit);
1235 __set_bit(BTN_RIGHT, dev->keybit);
1236
1237 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
1238 __set_bit(BTN_MIDDLE, dev->keybit);
1239
1240 if (!priv->absolute_mode) {
1241 /* Relative mode */
1242 __set_bit(EV_REL, dev->evbit);
1243 __set_bit(REL_X, dev->relbit);
1244 __set_bit(REL_Y, dev->relbit);
1245 return;
1246 }
1247
1248 /* Absolute mode */
1249 __set_bit(EV_ABS, dev->evbit);
1250 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
1251 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1252
1253 if (cr48_profile_sensor)
1254 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1255
1256 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
1257 set_abs_position_params(dev, info,
1258 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1259 /* Image sensors can report per-contact pressure */
1260 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1261 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
1262
1263 /* Image sensors can signal 4 and 5 finger clicks */
1264 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1265 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1266 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
1267 set_abs_position_params(dev, info,
1268 ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
1269 /*
1270 * Profile sensor in CR-48 tracks contacts reasonably well,
1271 * other non-image sensors with AGM use semi-mt.
1272 */
1273 input_mt_init_slots(dev, 2,
1274 INPUT_MT_POINTER |
1275 (cr48_profile_sensor ?
1276 INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
1277 }
1278
1279 if (SYN_CAP_PALMDETECT(info->capabilities))
1280 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1281
1282 __set_bit(BTN_TOUCH, dev->keybit);
1283 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1284
1285 if (SYN_CAP_MULTIFINGER(info->capabilities)) {
1286 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1287 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1288 }
1289
1290 if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
1291 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
1292 __set_bit(BTN_FORWARD, dev->keybit);
1293 __set_bit(BTN_BACK, dev->keybit);
1294 }
1295
1296 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1297 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
1298 __set_bit(BTN_0 + i, dev->keybit);
1299
1300 __clear_bit(EV_REL, dev->evbit);
1301 __clear_bit(REL_X, dev->relbit);
1302 __clear_bit(REL_Y, dev->relbit);
1303
1304 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
1305 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1306 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1307 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
1308 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
1309 /* Clickpads report only left button */
1310 __clear_bit(BTN_RIGHT, dev->keybit);
1311 __clear_bit(BTN_MIDDLE, dev->keybit);
1312 }
1313 }
1314
1315 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1316 void *data, char *buf)
1317 {
1318 struct synaptics_data *priv = psmouse->private;
1319
1320 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1321 }
1322
1323 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1324 void *data, const char *buf,
1325 size_t len)
1326 {
1327 struct synaptics_data *priv = psmouse->private;
1328 unsigned int value;
1329 int err;
1330
1331 err = kstrtouint(buf, 10, &value);
1332 if (err)
1333 return err;
1334
1335 if (value > 1)
1336 return -EINVAL;
1337
1338 if (value == priv->disable_gesture)
1339 return len;
1340
1341 priv->disable_gesture = value;
1342 if (value)
1343 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1344 else
1345 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1346
1347 if (synaptics_mode_cmd(psmouse, priv->mode))
1348 return -EIO;
1349
1350 return len;
1351 }
1352
1353 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1354 synaptics_show_disable_gesture,
1355 synaptics_set_disable_gesture);
1356
1357 static void synaptics_disconnect(struct psmouse *psmouse)
1358 {
1359 struct synaptics_data *priv = psmouse->private;
1360
1361 /*
1362 * We might have left a breadcrumb when trying to
1363 * set up SMbus companion.
1364 */
1365 psmouse_smbus_cleanup(psmouse);
1366
1367 if (!priv->absolute_mode &&
1368 SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
1369 device_remove_file(&psmouse->ps2dev.serio->dev,
1370 &psmouse_attr_disable_gesture.dattr);
1371
1372 synaptics_reset(psmouse);
1373 kfree(priv);
1374 psmouse->private = NULL;
1375 }
1376
1377 static int synaptics_reconnect(struct psmouse *psmouse)
1378 {
1379 struct synaptics_data *priv = psmouse->private;
1380 struct synaptics_device_info info;
1381 u8 param[2];
1382 int retry = 0;
1383 int error;
1384
1385 do {
1386 psmouse_reset(psmouse);
1387 if (retry) {
1388 /*
1389 * On some boxes, right after resuming, the touchpad
1390 * needs some time to finish initializing (I assume
1391 * it needs time to calibrate) and start responding
1392 * to Synaptics-specific queries, so let's wait a
1393 * bit.
1394 */
1395 ssleep(1);
1396 }
1397 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1398 error = synaptics_detect(psmouse, 0);
1399 } while (error && ++retry < 3);
1400
1401 if (error)
1402 return error;
1403
1404 if (retry > 1)
1405 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1406
1407 error = synaptics_query_hardware(psmouse, &info);
1408 if (error) {
1409 psmouse_err(psmouse, "Unable to query device.\n");
1410 return error;
1411 }
1412
1413 error = synaptics_set_mode(psmouse);
1414 if (error) {
1415 psmouse_err(psmouse, "Unable to initialize device.\n");
1416 return error;
1417 }
1418
1419 if (info.identity != priv->info.identity ||
1420 info.model_id != priv->info.model_id ||
1421 info.capabilities != priv->info.capabilities ||
1422 info.ext_cap != priv->info.ext_cap) {
1423 psmouse_err(psmouse,
1424 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
1425 priv->info.identity, info.identity,
1426 priv->info.model_id, info.model_id,
1427 priv->info.capabilities, info.capabilities,
1428 priv->info.ext_cap, info.ext_cap);
1429 return -ENXIO;
1430 }
1431
1432 return 0;
1433 }
1434
1435 static bool impaired_toshiba_kbc;
1436
1437 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1438 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1439 {
1440 /* Toshiba Satellite */
1441 .matches = {
1442 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1443 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1444 },
1445 },
1446 {
1447 /* Toshiba Dynabook */
1448 .matches = {
1449 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1450 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1451 },
1452 },
1453 {
1454 /* Toshiba Portege M300 */
1455 .matches = {
1456 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1457 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1458 },
1459
1460 },
1461 {
1462 /* Toshiba Portege M300 */
1463 .matches = {
1464 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1465 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1466 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1467 },
1468
1469 },
1470 #endif
1471 { }
1472 };
1473
1474 static bool broken_olpc_ec;
1475
1476 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1477 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1478 {
1479 /* OLPC XO-1 or XO-1.5 */
1480 .matches = {
1481 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1482 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1483 },
1484 },
1485 #endif
1486 { }
1487 };
1488
1489 static const struct dmi_system_id __initconst cr48_dmi_table[] = {
1490 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1491 {
1492 /* Cr-48 Chromebook (Codename Mario) */
1493 .matches = {
1494 DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
1495 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
1496 },
1497 },
1498 #endif
1499 { }
1500 };
1501
1502 void __init synaptics_module_init(void)
1503 {
1504 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1505 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1506 cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
1507 }
1508
1509 static int synaptics_init_ps2(struct psmouse *psmouse,
1510 struct synaptics_device_info *info,
1511 bool absolute_mode)
1512 {
1513 struct synaptics_data *priv;
1514 int err;
1515
1516 synaptics_apply_quirks(psmouse, info);
1517
1518 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1519 if (!priv)
1520 return -ENOMEM;
1521
1522 priv->info = *info;
1523 priv->absolute_mode = absolute_mode;
1524 if (SYN_ID_DISGEST_SUPPORTED(info->identity))
1525 priv->disable_gesture = true;
1526
1527 /*
1528 * Unfortunately ForcePad capability is not exported over PS/2,
1529 * so we have to resort to checking PNP IDs.
1530 */
1531 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
1532
1533 err = synaptics_set_mode(psmouse);
1534 if (err) {
1535 psmouse_err(psmouse, "Unable to initialize device.\n");
1536 goto init_fail;
1537 }
1538
1539 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
1540 SYN_NEWABS : SYN_OLDABS;
1541
1542 psmouse_info(psmouse,
1543 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
1544 SYN_ID_MODEL(info->identity),
1545 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
1546 info->model_id,
1547 info->capabilities, info->ext_cap, info->ext_cap_0c,
1548 info->ext_cap_10, info->board_id, info->firmware_id);
1549
1550 set_input_params(psmouse, priv);
1551
1552 /*
1553 * Encode touchpad model so that it can be used to set
1554 * input device->id.version and be visible to userspace.
1555 * Because version is __u16 we have to drop something.
1556 * Hardware info bits seem to be good candidates as they
1557 * are documented to be for Synaptics corp. internal use.
1558 */
1559 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
1560 (info->model_id & 0x000000ff);
1561
1562 if (absolute_mode) {
1563 psmouse->protocol_handler = synaptics_process_byte;
1564 psmouse->pktsize = 6;
1565 } else {
1566 /* Relative mode follows standard PS/2 mouse protocol */
1567 psmouse->protocol_handler = psmouse_process_byte;
1568 psmouse->pktsize = 3;
1569 }
1570
1571 psmouse->set_rate = synaptics_set_rate;
1572 psmouse->disconnect = synaptics_disconnect;
1573 psmouse->reconnect = synaptics_reconnect;
1574 psmouse->cleanup = synaptics_reset;
1575 /* Synaptics can usually stay in sync without extra help */
1576 psmouse->resync_time = 0;
1577
1578 if (SYN_CAP_PASS_THROUGH(info->capabilities))
1579 synaptics_pt_create(psmouse);
1580
1581 /*
1582 * Toshiba's KBC seems to have trouble handling data from
1583 * Synaptics at full rate. Switch to a lower rate (roughly
1584 * the same rate as a standard PS/2 mouse).
1585 */
1586 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1587 psmouse_info(psmouse,
1588 "Toshiba %s detected, limiting rate to 40pps.\n",
1589 dmi_get_system_info(DMI_PRODUCT_NAME));
1590 psmouse->rate = 40;
1591 }
1592
1593 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) {
1594 err = device_create_file(&psmouse->ps2dev.serio->dev,
1595 &psmouse_attr_disable_gesture.dattr);
1596 if (err) {
1597 psmouse_err(psmouse,
1598 "Failed to create disable_gesture attribute (%d)",
1599 err);
1600 goto init_fail;
1601 }
1602 }
1603
1604 return 0;
1605
1606 init_fail:
1607 kfree(priv);
1608 return err;
1609 }
1610
1611 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1612 {
1613 struct synaptics_device_info info;
1614 int error;
1615
1616 psmouse_reset(psmouse);
1617
1618 error = synaptics_query_hardware(psmouse, &info);
1619 if (error) {
1620 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1621 return error;
1622 }
1623
1624 return synaptics_init_ps2(psmouse, &info, absolute_mode);
1625 }
1626
1627 int synaptics_init_absolute(struct psmouse *psmouse)
1628 {
1629 return __synaptics_init(psmouse, true);
1630 }
1631
1632 int synaptics_init_relative(struct psmouse *psmouse)
1633 {
1634 return __synaptics_init(psmouse, false);
1635 }
1636
1637 static int synaptics_setup_ps2(struct psmouse *psmouse,
1638 struct synaptics_device_info *info)
1639 {
1640 bool absolute_mode = true;
1641 int error;
1642
1643 /*
1644 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1645 * packet spew overloads the EC such that key presses on the keyboard
1646 * are missed. Given that, don't even attempt to use Absolute mode.
1647 * Relative mode seems to work just fine.
1648 */
1649 if (broken_olpc_ec) {
1650 psmouse_info(psmouse,
1651 "OLPC XO detected, forcing relative protocol.\n");
1652 absolute_mode = false;
1653 }
1654
1655 error = synaptics_init_ps2(psmouse, info, absolute_mode);
1656 if (error)
1657 return error;
1658
1659 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
1660 }
1661
1662 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1663
1664 void __init synaptics_module_init(void)
1665 {
1666 }
1667
1668 static int __maybe_unused
1669 synaptics_setup_ps2(struct psmouse *psmouse,
1670 struct synaptics_device_info *info)
1671 {
1672 return -ENOSYS;
1673 }
1674
1675 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
1676
1677 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
1678
1679 /*
1680 * The newest Synaptics device can use a secondary bus (called InterTouch) which
1681 * provides a better bandwidth and allow a better control of the touchpads.
1682 * This is used to decide if we need to use this bus or not.
1683 */
1684 enum {
1685 SYNAPTICS_INTERTOUCH_NOT_SET = -1,
1686 SYNAPTICS_INTERTOUCH_OFF,
1687 SYNAPTICS_INTERTOUCH_ON,
1688 };
1689
1690 static int synaptics_intertouch = SYNAPTICS_INTERTOUCH_NOT_SET;
1691 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
1692 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
1693
1694 static int synaptics_create_intertouch(struct psmouse *psmouse,
1695 struct synaptics_device_info *info,
1696 bool leave_breadcrumbs)
1697 {
1698 bool topbuttonpad =
1699 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1700 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
1701 const struct rmi_device_platform_data pdata = {
1702 .sensor_pdata = {
1703 .sensor_type = rmi_sensor_touchpad,
1704 .axis_align.flip_y = true,
1705 /* to prevent cursors jumps: */
1706 .kernel_tracking = true,
1707 .topbuttonpad = topbuttonpad,
1708 },
1709 .f30_data = {
1710 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
1711 .trackstick_buttons =
1712 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
1713 },
1714 };
1715 const struct i2c_board_info intertouch_board = {
1716 I2C_BOARD_INFO("rmi4_smbus", 0x2c),
1717 .flags = I2C_CLIENT_HOST_NOTIFY,
1718 };
1719
1720 return psmouse_smbus_init(psmouse, &intertouch_board,
1721 &pdata, sizeof(pdata),
1722 leave_breadcrumbs);
1723 }
1724
1725 /**
1726 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
1727 * and decides to instantiate a SMBus InterTouch device.
1728 */
1729 static int synaptics_setup_intertouch(struct psmouse *psmouse,
1730 struct synaptics_device_info *info,
1731 bool leave_breadcrumbs)
1732 {
1733 int error;
1734
1735 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
1736 return -ENXIO;
1737
1738 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
1739 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
1740 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids))
1741 return -ENXIO;
1742 }
1743
1744 psmouse_info(psmouse, "Trying to set up SMBus access\n");
1745
1746 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
1747 if (error) {
1748 if (error == -EAGAIN)
1749 psmouse_info(psmouse, "SMbus companion is not ready yet\n");
1750 else
1751 psmouse_err(psmouse, "unable to create intertouch device\n");
1752
1753 return error;
1754 }
1755
1756 return 0;
1757 }
1758
1759 int synaptics_init_smbus(struct psmouse *psmouse)
1760 {
1761 struct synaptics_device_info info;
1762 int error;
1763
1764 psmouse_reset(psmouse);
1765
1766 error = synaptics_query_hardware(psmouse, &info);
1767 if (error) {
1768 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1769 return error;
1770 }
1771
1772 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
1773 return -ENXIO;
1774
1775 return synaptics_create_intertouch(psmouse, &info, false);
1776 }
1777
1778 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1779
1780 static int __maybe_unused
1781 synaptics_setup_intertouch(struct psmouse *psmouse,
1782 struct synaptics_device_info *info,
1783 bool leave_breadcrumbs)
1784 {
1785 return -ENOSYS;
1786 }
1787
1788 int synaptics_init_smbus(struct psmouse *psmouse)
1789 {
1790 return -ENOSYS;
1791 }
1792
1793 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1794
1795 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
1796 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
1797
1798 int synaptics_init(struct psmouse *psmouse)
1799 {
1800 struct synaptics_device_info info;
1801 int error;
1802 int retval;
1803
1804 psmouse_reset(psmouse);
1805
1806 error = synaptics_query_hardware(psmouse, &info);
1807 if (error) {
1808 psmouse_err(psmouse, "Unable to query device: %d\n", error);
1809 return error;
1810 }
1811
1812 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
1813 error = synaptics_setup_intertouch(psmouse, &info, true);
1814 if (!error)
1815 return PSMOUSE_SYNAPTICS_SMBUS;
1816 }
1817
1818 retval = synaptics_setup_ps2(psmouse, &info);
1819 if (retval < 0) {
1820 /*
1821 * Not using any flavor of Synaptics support, so clean up
1822 * SMbus breadcrumbs, if any.
1823 */
1824 psmouse_smbus_cleanup(psmouse);
1825 }
1826
1827 return retval;
1828 }
1829
1830 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
1831
1832 int synaptics_init(struct psmouse *psmouse)
1833 {
1834 return -ENOSYS;
1835 }
1836
1837 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
Ubuntu Artful kernel mirror