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