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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[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 /*****************************************************************************
71 * Stuff we need even when we do not want native Synaptics support
72 ****************************************************************************/
73
74 /*
75 * Set the synaptics touchpad mode byte by special commands
76 */
77 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
78 {
79 unsigned char param[1];
80
81 if (psmouse_sliced_command(psmouse, mode))
82 return -1;
83 param[0] = SYN_PS_SET_MODE2;
84 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
85 return -1;
86 return 0;
87 }
88
89 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
90 {
91 struct ps2dev *ps2dev = &psmouse->ps2dev;
92 unsigned char param[4];
93
94 param[0] = 0;
95
96 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
97 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
98 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
100 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
101
102 if (param[1] != 0x47)
103 return -ENODEV;
104
105 if (set_properties) {
106 psmouse->vendor = "Synaptics";
107 psmouse->name = "TouchPad";
108 }
109
110 return 0;
111 }
112
113 void synaptics_reset(struct psmouse *psmouse)
114 {
115 /* reset touchpad back to relative mode, gestures enabled */
116 synaptics_mode_cmd(psmouse, 0);
117 }
118
119 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
120
121 /*****************************************************************************
122 * Synaptics communications functions
123 ****************************************************************************/
124
125 /*
126 * Synaptics touchpads report the y coordinate from bottom to top, which is
127 * opposite from what userspace expects.
128 * This function is used to invert y before reporting.
129 */
130 static int synaptics_invert_y(int y)
131 {
132 return YMAX_NOMINAL + YMIN_NOMINAL - y;
133 }
134
135 /*
136 * Send a command to the synpatics touchpad by special commands
137 */
138 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
139 {
140 if (psmouse_sliced_command(psmouse, c))
141 return -1;
142 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
143 return -1;
144 return 0;
145 }
146
147 /*
148 * Read the model-id bytes from the touchpad
149 * see also SYN_MODEL_* macros
150 */
151 static int synaptics_model_id(struct psmouse *psmouse)
152 {
153 struct synaptics_data *priv = psmouse->private;
154 unsigned char mi[3];
155
156 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
157 return -1;
158 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
159 return 0;
160 }
161
162 /*
163 * Read the board id from the touchpad
164 * The board id is encoded in the "QUERY MODES" response
165 */
166 static int synaptics_board_id(struct psmouse *psmouse)
167 {
168 struct synaptics_data *priv = psmouse->private;
169 unsigned char bid[3];
170
171 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
172 return -1;
173 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
174 return 0;
175 }
176
177 /*
178 * Read the firmware id from the touchpad
179 */
180 static int synaptics_firmware_id(struct psmouse *psmouse)
181 {
182 struct synaptics_data *priv = psmouse->private;
183 unsigned char fwid[3];
184
185 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
186 return -1;
187 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
188 return 0;
189 }
190
191 /*
192 * Read the capability-bits from the touchpad
193 * see also the SYN_CAP_* macros
194 */
195 static int synaptics_capability(struct psmouse *psmouse)
196 {
197 struct synaptics_data *priv = psmouse->private;
198 unsigned char cap[3];
199
200 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
201 return -1;
202 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
203 priv->ext_cap = priv->ext_cap_0c = 0;
204
205 /*
206 * Older firmwares had submodel ID fixed to 0x47
207 */
208 if (SYN_ID_FULL(priv->identity) < 0x705 &&
209 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
210 return -1;
211 }
212
213 /*
214 * Unless capExtended is set the rest of the flags should be ignored
215 */
216 if (!SYN_CAP_EXTENDED(priv->capabilities))
217 priv->capabilities = 0;
218
219 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
220 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
221 psmouse_warn(psmouse,
222 "device claims to have extended capabilities, but I'm not able to read them.\n");
223 } else {
224 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
225
226 /*
227 * if nExtBtn is greater than 8 it should be considered
228 * invalid and treated as 0
229 */
230 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
231 priv->ext_cap &= 0xff0fff;
232 }
233 }
234
235 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
236 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
237 psmouse_warn(psmouse,
238 "device claims to have extended capability 0x0c, but I'm not able to read it.\n");
239 } else {
240 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
241 }
242 }
243
244 return 0;
245 }
246
247 /*
248 * Identify Touchpad
249 * See also the SYN_ID_* macros
250 */
251 static int synaptics_identify(struct psmouse *psmouse)
252 {
253 struct synaptics_data *priv = psmouse->private;
254 unsigned char id[3];
255
256 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
257 return -1;
258 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
259 if (SYN_ID_IS_SYNAPTICS(priv->identity))
260 return 0;
261 return -1;
262 }
263
264 /*
265 * Read touchpad resolution and maximum reported coordinates
266 * Resolution is left zero if touchpad does not support the query
267 */
268
269 static const int *quirk_min_max;
270
271 static int synaptics_resolution(struct psmouse *psmouse)
272 {
273 struct synaptics_data *priv = psmouse->private;
274 unsigned char resp[3];
275
276 if (quirk_min_max) {
277 priv->x_min = quirk_min_max[0];
278 priv->x_max = quirk_min_max[1];
279 priv->y_min = quirk_min_max[2];
280 priv->y_max = quirk_min_max[3];
281 return 0;
282 }
283
284 if (SYN_ID_MAJOR(priv->identity) < 4)
285 return 0;
286
287 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
288 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
289 priv->x_res = resp[0]; /* x resolution in units/mm */
290 priv->y_res = resp[2]; /* y resolution in units/mm */
291 }
292 }
293
294 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
295 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
296 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
297 psmouse_warn(psmouse,
298 "device claims to have max coordinates query, but I'm not able to read it.\n");
299 } else {
300 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
301 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
302 }
303 }
304
305 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
306 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
307 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
308 psmouse_warn(psmouse,
309 "device claims to have min coordinates query, but I'm not able to read it.\n");
310 } else {
311 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
312 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
313 }
314 }
315
316 return 0;
317 }
318
319 static int synaptics_query_hardware(struct psmouse *psmouse)
320 {
321 if (synaptics_identify(psmouse))
322 return -1;
323 if (synaptics_model_id(psmouse))
324 return -1;
325 if (synaptics_firmware_id(psmouse))
326 return -1;
327 if (synaptics_board_id(psmouse))
328 return -1;
329 if (synaptics_capability(psmouse))
330 return -1;
331 if (synaptics_resolution(psmouse))
332 return -1;
333
334 return 0;
335 }
336
337 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
338 {
339 static unsigned char param = 0xc8;
340 struct synaptics_data *priv = psmouse->private;
341
342 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
343 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
344 return 0;
345
346 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
347 return -1;
348
349 if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
350 return -1;
351
352 /* Advanced gesture mode also sends multi finger data */
353 priv->capabilities |= BIT(1);
354
355 return 0;
356 }
357
358 static int synaptics_set_mode(struct psmouse *psmouse)
359 {
360 struct synaptics_data *priv = psmouse->private;
361
362 priv->mode = 0;
363 if (priv->absolute_mode)
364 priv->mode |= SYN_BIT_ABSOLUTE_MODE;
365 if (priv->disable_gesture)
366 priv->mode |= SYN_BIT_DISABLE_GESTURE;
367 if (psmouse->rate >= 80)
368 priv->mode |= SYN_BIT_HIGH_RATE;
369 if (SYN_CAP_EXTENDED(priv->capabilities))
370 priv->mode |= SYN_BIT_W_MODE;
371
372 if (synaptics_mode_cmd(psmouse, priv->mode))
373 return -1;
374
375 if (priv->absolute_mode &&
376 synaptics_set_advanced_gesture_mode(psmouse)) {
377 psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
378 return -1;
379 }
380
381 return 0;
382 }
383
384 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
385 {
386 struct synaptics_data *priv = psmouse->private;
387
388 if (rate >= 80) {
389 priv->mode |= SYN_BIT_HIGH_RATE;
390 psmouse->rate = 80;
391 } else {
392 priv->mode &= ~SYN_BIT_HIGH_RATE;
393 psmouse->rate = 40;
394 }
395
396 synaptics_mode_cmd(psmouse, priv->mode);
397 }
398
399 /*****************************************************************************
400 * Synaptics pass-through PS/2 port support
401 ****************************************************************************/
402 static int synaptics_pt_write(struct serio *serio, unsigned char c)
403 {
404 struct psmouse *parent = serio_get_drvdata(serio->parent);
405 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
406
407 if (psmouse_sliced_command(parent, c))
408 return -1;
409 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
410 return -1;
411 return 0;
412 }
413
414 static int synaptics_pt_start(struct serio *serio)
415 {
416 struct psmouse *parent = serio_get_drvdata(serio->parent);
417 struct synaptics_data *priv = parent->private;
418
419 serio_pause_rx(parent->ps2dev.serio);
420 priv->pt_port = serio;
421 serio_continue_rx(parent->ps2dev.serio);
422
423 return 0;
424 }
425
426 static void synaptics_pt_stop(struct serio *serio)
427 {
428 struct psmouse *parent = serio_get_drvdata(serio->parent);
429 struct synaptics_data *priv = parent->private;
430
431 serio_pause_rx(parent->ps2dev.serio);
432 priv->pt_port = NULL;
433 serio_continue_rx(parent->ps2dev.serio);
434 }
435
436 static int synaptics_is_pt_packet(unsigned char *buf)
437 {
438 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
439 }
440
441 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
442 {
443 struct psmouse *child = serio_get_drvdata(ptport);
444
445 if (child && child->state == PSMOUSE_ACTIVATED) {
446 serio_interrupt(ptport, packet[1], 0);
447 serio_interrupt(ptport, packet[4], 0);
448 serio_interrupt(ptport, packet[5], 0);
449 if (child->pktsize == 4)
450 serio_interrupt(ptport, packet[2], 0);
451 } else
452 serio_interrupt(ptport, packet[1], 0);
453 }
454
455 static void synaptics_pt_activate(struct psmouse *psmouse)
456 {
457 struct synaptics_data *priv = psmouse->private;
458 struct psmouse *child = serio_get_drvdata(priv->pt_port);
459
460 /* adjust the touchpad to child's choice of protocol */
461 if (child) {
462 if (child->pktsize == 4)
463 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
464 else
465 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
466
467 if (synaptics_mode_cmd(psmouse, priv->mode))
468 psmouse_warn(psmouse,
469 "failed to switch guest protocol\n");
470 }
471 }
472
473 static void synaptics_pt_create(struct psmouse *psmouse)
474 {
475 struct serio *serio;
476
477 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
478 if (!serio) {
479 psmouse_err(psmouse,
480 "not enough memory for pass-through port\n");
481 return;
482 }
483
484 serio->id.type = SERIO_PS_PSTHRU;
485 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
486 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
487 serio->write = synaptics_pt_write;
488 serio->start = synaptics_pt_start;
489 serio->stop = synaptics_pt_stop;
490 serio->parent = psmouse->ps2dev.serio;
491
492 psmouse->pt_activate = synaptics_pt_activate;
493
494 psmouse_info(psmouse, "serio: %s port at %s\n",
495 serio->name, psmouse->phys);
496 serio_register_port(serio);
497 }
498
499 /*****************************************************************************
500 * Functions to interpret the absolute mode packets
501 ****************************************************************************/
502
503 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
504 int sgm, int agm)
505 {
506 state->count = count;
507 state->sgm = sgm;
508 state->agm = agm;
509 }
510
511 static void synaptics_parse_agm(const unsigned char buf[],
512 struct synaptics_data *priv,
513 struct synaptics_hw_state *hw)
514 {
515 struct synaptics_hw_state *agm = &priv->agm;
516 int agm_packet_type;
517
518 agm_packet_type = (buf[5] & 0x30) >> 4;
519 switch (agm_packet_type) {
520 case 1:
521 /* Gesture packet: (x, y, z) half resolution */
522 agm->w = hw->w;
523 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
524 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
525 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
526 break;
527
528 case 2:
529 /* AGM-CONTACT packet: (count, sgm, agm) */
530 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
531 break;
532
533 default:
534 break;
535 }
536
537 /* Record that at least one AGM has been received since last SGM */
538 priv->agm_pending = true;
539 }
540
541 static int synaptics_parse_hw_state(const unsigned char buf[],
542 struct synaptics_data *priv,
543 struct synaptics_hw_state *hw)
544 {
545 memset(hw, 0, sizeof(struct synaptics_hw_state));
546
547 if (SYN_MODEL_NEWABS(priv->model_id)) {
548 hw->w = (((buf[0] & 0x30) >> 2) |
549 ((buf[0] & 0x04) >> 1) |
550 ((buf[3] & 0x04) >> 2));
551
552 hw->left = (buf[0] & 0x01) ? 1 : 0;
553 hw->right = (buf[0] & 0x02) ? 1 : 0;
554
555 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
556 /*
557 * Clickpad's button is transmitted as middle button,
558 * however, since it is primary button, we will report
559 * it as BTN_LEFT.
560 */
561 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
562
563 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
564 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
565 if (hw->w == 2)
566 hw->scroll = (signed char)(buf[1]);
567 }
568
569 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
570 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
571 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
572 }
573
574 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
575 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
576 hw->w == 2) {
577 synaptics_parse_agm(buf, priv, hw);
578 return 1;
579 }
580
581 hw->x = (((buf[3] & 0x10) << 8) |
582 ((buf[1] & 0x0f) << 8) |
583 buf[4]);
584 hw->y = (((buf[3] & 0x20) << 7) |
585 ((buf[1] & 0xf0) << 4) |
586 buf[5]);
587 hw->z = buf[2];
588
589 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
590 ((buf[0] ^ buf[3]) & 0x02)) {
591 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
592 default:
593 /*
594 * if nExtBtn is greater than 8 it should be
595 * considered invalid and treated as 0
596 */
597 break;
598 case 8:
599 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
600 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
601 case 6:
602 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
603 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
604 case 4:
605 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
606 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
607 case 2:
608 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
609 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
610 }
611 }
612 } else {
613 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
614 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
615
616 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
617 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
618
619 hw->left = (buf[0] & 0x01) ? 1 : 0;
620 hw->right = (buf[0] & 0x02) ? 1 : 0;
621 }
622
623 /*
624 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
625 * is used by some firmware to indicate a finger at the edge of
626 * the touchpad whose precise position cannot be determined, so
627 * convert these values to the maximum axis value.
628 */
629 if (hw->x > X_MAX_POSITIVE)
630 hw->x -= 1 << ABS_POS_BITS;
631 else if (hw->x == X_MAX_POSITIVE)
632 hw->x = XMAX;
633
634 if (hw->y > Y_MAX_POSITIVE)
635 hw->y -= 1 << ABS_POS_BITS;
636 else if (hw->y == Y_MAX_POSITIVE)
637 hw->y = YMAX;
638
639 return 0;
640 }
641
642 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
643 bool active, int x, int y)
644 {
645 input_mt_slot(dev, slot);
646 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
647 if (active) {
648 input_report_abs(dev, ABS_MT_POSITION_X, x);
649 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
650 }
651 }
652
653 static void synaptics_report_semi_mt_data(struct input_dev *dev,
654 const struct synaptics_hw_state *a,
655 const struct synaptics_hw_state *b,
656 int num_fingers)
657 {
658 if (num_fingers >= 2) {
659 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
660 min(a->y, b->y));
661 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
662 max(a->y, b->y));
663 } else if (num_fingers == 1) {
664 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
665 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
666 } else {
667 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
668 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
669 }
670 }
671
672 static void synaptics_report_buttons(struct psmouse *psmouse,
673 const struct synaptics_hw_state *hw)
674 {
675 struct input_dev *dev = psmouse->dev;
676 struct synaptics_data *priv = psmouse->private;
677 int i;
678
679 input_report_key(dev, BTN_LEFT, hw->left);
680 input_report_key(dev, BTN_RIGHT, hw->right);
681
682 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
683 input_report_key(dev, BTN_MIDDLE, hw->middle);
684
685 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
686 input_report_key(dev, BTN_FORWARD, hw->up);
687 input_report_key(dev, BTN_BACK, hw->down);
688 }
689
690 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
691 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
692 }
693
694 static void synaptics_report_slot(struct input_dev *dev, int slot,
695 const struct synaptics_hw_state *hw)
696 {
697 input_mt_slot(dev, slot);
698 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
699 if (!hw)
700 return;
701
702 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
703 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
704 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
705 }
706
707 static void synaptics_report_mt_data(struct psmouse *psmouse,
708 struct synaptics_mt_state *mt_state,
709 const struct synaptics_hw_state *sgm)
710 {
711 struct input_dev *dev = psmouse->dev;
712 struct synaptics_data *priv = psmouse->private;
713 struct synaptics_hw_state *agm = &priv->agm;
714 struct synaptics_mt_state *old = &priv->mt_state;
715
716 switch (mt_state->count) {
717 case 0:
718 synaptics_report_slot(dev, 0, NULL);
719 synaptics_report_slot(dev, 1, NULL);
720 break;
721 case 1:
722 if (mt_state->sgm == -1) {
723 synaptics_report_slot(dev, 0, NULL);
724 synaptics_report_slot(dev, 1, NULL);
725 } else if (mt_state->sgm == 0) {
726 synaptics_report_slot(dev, 0, sgm);
727 synaptics_report_slot(dev, 1, NULL);
728 } else {
729 synaptics_report_slot(dev, 0, NULL);
730 synaptics_report_slot(dev, 1, sgm);
731 }
732 break;
733 default:
734 /*
735 * If the finger slot contained in SGM is valid, and either
736 * hasn't changed, or is new, or the old SGM has now moved to
737 * AGM, then report SGM in MTB slot 0.
738 * Otherwise, empty MTB slot 0.
739 */
740 if (mt_state->sgm != -1 &&
741 (mt_state->sgm == old->sgm ||
742 old->sgm == -1 || mt_state->agm == old->sgm))
743 synaptics_report_slot(dev, 0, sgm);
744 else
745 synaptics_report_slot(dev, 0, NULL);
746
747 /*
748 * If the finger slot contained in AGM is valid, and either
749 * hasn't changed, or is new, then report AGM in MTB slot 1.
750 * Otherwise, empty MTB slot 1.
751 *
752 * However, in the case where the AGM is new, make sure that
753 * that it is either the same as the old SGM, or there was no
754 * SGM.
755 *
756 * Otherwise, if the SGM was just 1, and the new AGM is 2, then
757 * the new AGM will keep the old SGM's tracking ID, which can
758 * cause apparent drumroll. This happens if in the following
759 * valid finger sequence:
760 *
761 * Action SGM AGM (MTB slot:Contact)
762 * 1. Touch contact 0 (0:0)
763 * 2. Touch contact 1 (0:0, 1:1)
764 * 3. Lift contact 0 (1:1)
765 * 4. Touch contacts 2,3 (0:2, 1:3)
766 *
767 * In step 4, contact 3, in AGM must not be given the same
768 * tracking ID as contact 1 had in step 3. To avoid this,
769 * the first agm with contact 3 is dropped and slot 1 is
770 * invalidated (tracking ID = -1).
771 */
772 if (mt_state->agm != -1 &&
773 (mt_state->agm == old->agm ||
774 (old->agm == -1 &&
775 (old->sgm == -1 || mt_state->agm == old->sgm))))
776 synaptics_report_slot(dev, 1, agm);
777 else
778 synaptics_report_slot(dev, 1, NULL);
779 break;
780 }
781
782 /* Don't use active slot count to generate BTN_TOOL events. */
783 input_mt_report_pointer_emulation(dev, false);
784
785 /* Send the number of fingers reported by touchpad itself. */
786 input_mt_report_finger_count(dev, mt_state->count);
787
788 synaptics_report_buttons(psmouse, sgm);
789
790 input_sync(dev);
791 }
792
793 /* Handle case where mt_state->count = 0 */
794 static void synaptics_image_sensor_0f(struct synaptics_data *priv,
795 struct synaptics_mt_state *mt_state)
796 {
797 synaptics_mt_state_set(mt_state, 0, -1, -1);
798 priv->mt_state_lost = false;
799 }
800
801 /* Handle case where mt_state->count = 1 */
802 static void synaptics_image_sensor_1f(struct synaptics_data *priv,
803 struct synaptics_mt_state *mt_state)
804 {
805 struct synaptics_hw_state *agm = &priv->agm;
806 struct synaptics_mt_state *old = &priv->mt_state;
807
808 /*
809 * If the last AGM was (0,0,0), and there is only one finger left,
810 * then we absolutely know that SGM contains slot 0, and all other
811 * fingers have been removed.
812 */
813 if (priv->agm_pending && agm->z == 0) {
814 synaptics_mt_state_set(mt_state, 1, 0, -1);
815 priv->mt_state_lost = false;
816 return;
817 }
818
819 switch (old->count) {
820 case 0:
821 synaptics_mt_state_set(mt_state, 1, 0, -1);
822 break;
823 case 1:
824 /*
825 * If mt_state_lost, then the previous transition was 3->1,
826 * and SGM now contains either slot 0 or 1, but we don't know
827 * which. So, we just assume that the SGM now contains slot 1.
828 *
829 * If pending AGM and either:
830 * (a) the previous SGM slot contains slot 0, or
831 * (b) there was no SGM slot
832 * then, the SGM now contains slot 1
833 *
834 * Case (a) happens with very rapid "drum roll" gestures, where
835 * slot 0 finger is lifted and a new slot 1 finger touches
836 * within one reporting interval.
837 *
838 * Case (b) happens if initially two or more fingers tap
839 * briefly, and all but one lift before the end of the first
840 * reporting interval.
841 *
842 * (In both these cases, slot 0 will becomes empty, so SGM
843 * contains slot 1 with the new finger)
844 *
845 * Else, if there was no previous SGM, it now contains slot 0.
846 *
847 * Otherwise, SGM still contains the same slot.
848 */
849 if (priv->mt_state_lost ||
850 (priv->agm_pending && old->sgm <= 0))
851 synaptics_mt_state_set(mt_state, 1, 1, -1);
852 else if (old->sgm == -1)
853 synaptics_mt_state_set(mt_state, 1, 0, -1);
854 break;
855 case 2:
856 /*
857 * If mt_state_lost, we don't know which finger SGM contains.
858 *
859 * So, report 1 finger, but with both slots empty.
860 * We will use slot 1 on subsequent 1->1
861 */
862 if (priv->mt_state_lost) {
863 synaptics_mt_state_set(mt_state, 1, -1, -1);
864 break;
865 }
866 /*
867 * Since the last AGM was NOT (0,0,0), it was the finger in
868 * slot 0 that has been removed.
869 * So, SGM now contains previous AGM's slot, and AGM is now
870 * empty.
871 */
872 synaptics_mt_state_set(mt_state, 1, old->agm, -1);
873 break;
874 case 3:
875 /*
876 * Since last AGM was not (0,0,0), we don't know which finger
877 * is left.
878 *
879 * So, report 1 finger, but with both slots empty.
880 * We will use slot 1 on subsequent 1->1
881 */
882 synaptics_mt_state_set(mt_state, 1, -1, -1);
883 priv->mt_state_lost = true;
884 break;
885 case 4:
886 case 5:
887 /* mt_state was updated by AGM-CONTACT packet */
888 break;
889 }
890 }
891
892 /* Handle case where mt_state->count = 2 */
893 static void synaptics_image_sensor_2f(struct synaptics_data *priv,
894 struct synaptics_mt_state *mt_state)
895 {
896 struct synaptics_mt_state *old = &priv->mt_state;
897
898 switch (old->count) {
899 case 0:
900 synaptics_mt_state_set(mt_state, 2, 0, 1);
901 break;
902 case 1:
903 /*
904 * If previous SGM contained slot 1 or higher, SGM now contains
905 * slot 0 (the newly touching finger) and AGM contains SGM's
906 * previous slot.
907 *
908 * Otherwise, SGM still contains slot 0 and AGM now contains
909 * slot 1.
910 */
911 if (old->sgm >= 1)
912 synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
913 else
914 synaptics_mt_state_set(mt_state, 2, 0, 1);
915 break;
916 case 2:
917 /*
918 * If mt_state_lost, SGM now contains either finger 1 or 2, but
919 * we don't know which.
920 * So, we just assume that the SGM contains slot 0 and AGM 1.
921 */
922 if (priv->mt_state_lost)
923 synaptics_mt_state_set(mt_state, 2, 0, 1);
924 /*
925 * Otherwise, use the same mt_state, since it either hasn't
926 * changed, or was updated by a recently received AGM-CONTACT
927 * packet.
928 */
929 break;
930 case 3:
931 /*
932 * 3->2 transitions have two unsolvable problems:
933 * 1) no indication is given which finger was removed
934 * 2) no way to tell if agm packet was for finger 3
935 * before 3->2, or finger 2 after 3->2.
936 *
937 * So, report 2 fingers, but empty all slots.
938 * We will guess slots [0,1] on subsequent 2->2.
939 */
940 synaptics_mt_state_set(mt_state, 2, -1, -1);
941 priv->mt_state_lost = true;
942 break;
943 case 4:
944 case 5:
945 /* mt_state was updated by AGM-CONTACT packet */
946 break;
947 }
948 }
949
950 /* Handle case where mt_state->count = 3 */
951 static void synaptics_image_sensor_3f(struct synaptics_data *priv,
952 struct synaptics_mt_state *mt_state)
953 {
954 struct synaptics_mt_state *old = &priv->mt_state;
955
956 switch (old->count) {
957 case 0:
958 synaptics_mt_state_set(mt_state, 3, 0, 2);
959 break;
960 case 1:
961 /*
962 * If previous SGM contained slot 2 or higher, SGM now contains
963 * slot 0 (one of the newly touching fingers) and AGM contains
964 * SGM's previous slot.
965 *
966 * Otherwise, SGM now contains slot 0 and AGM contains slot 2.
967 */
968 if (old->sgm >= 2)
969 synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
970 else
971 synaptics_mt_state_set(mt_state, 3, 0, 2);
972 break;
973 case 2:
974 /*
975 * If the AGM previously contained slot 3 or higher, then the
976 * newly touching finger is in the lowest available slot.
977 *
978 * If SGM was previously 1 or higher, then the new SGM is
979 * now slot 0 (with a new finger), otherwise, the new finger
980 * is now in a hidden slot between 0 and AGM's slot.
981 *
982 * In all such cases, the SGM now contains slot 0, and the AGM
983 * continues to contain the same slot as before.
984 */
985 if (old->agm >= 3) {
986 synaptics_mt_state_set(mt_state, 3, 0, old->agm);
987 break;
988 }
989
990 /*
991 * After some 3->1 and all 3->2 transitions, we lose track
992 * of which slot is reported by SGM and AGM.
993 *
994 * For 2->3 in this state, report 3 fingers, but empty all
995 * slots, and we will guess (0,2) on a subsequent 0->3.
996 *
997 * To userspace, the resulting transition will look like:
998 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
999 */
1000 if (priv->mt_state_lost) {
1001 synaptics_mt_state_set(mt_state, 3, -1, -1);
1002 break;
1003 }
1004
1005 /*
1006 * If the (SGM,AGM) really previously contained slots (0, 1),
1007 * then we cannot know what slot was just reported by the AGM,
1008 * because the 2->3 transition can occur either before or after
1009 * the AGM packet. Thus, this most recent AGM could contain
1010 * either the same old slot 1 or the new slot 2.
1011 * Subsequent AGMs will be reporting slot 2.
1012 *
1013 * To userspace, the resulting transition will look like:
1014 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
1015 */
1016 synaptics_mt_state_set(mt_state, 3, 0, -1);
1017 break;
1018 case 3:
1019 /*
1020 * If, for whatever reason, the previous agm was invalid,
1021 * Assume SGM now contains slot 0, AGM now contains slot 2.
1022 */
1023 if (old->agm <= 2)
1024 synaptics_mt_state_set(mt_state, 3, 0, 2);
1025 /*
1026 * mt_state either hasn't changed, or was updated by a recently
1027 * received AGM-CONTACT packet.
1028 */
1029 break;
1030
1031 case 4:
1032 case 5:
1033 /* mt_state was updated by AGM-CONTACT packet */
1034 break;
1035 }
1036 }
1037
1038 /* Handle case where mt_state->count = 4, or = 5 */
1039 static void synaptics_image_sensor_45f(struct synaptics_data *priv,
1040 struct synaptics_mt_state *mt_state)
1041 {
1042 /* mt_state was updated correctly by AGM-CONTACT packet */
1043 priv->mt_state_lost = false;
1044 }
1045
1046 static void synaptics_image_sensor_process(struct psmouse *psmouse,
1047 struct synaptics_hw_state *sgm)
1048 {
1049 struct synaptics_data *priv = psmouse->private;
1050 struct synaptics_hw_state *agm = &priv->agm;
1051 struct synaptics_mt_state mt_state;
1052
1053 /* Initialize using current mt_state (as updated by last agm) */
1054 mt_state = agm->mt_state;
1055
1056 /*
1057 * Update mt_state using the new finger count and current mt_state.
1058 */
1059 if (sgm->z == 0)
1060 synaptics_image_sensor_0f(priv, &mt_state);
1061 else if (sgm->w >= 4)
1062 synaptics_image_sensor_1f(priv, &mt_state);
1063 else if (sgm->w == 0)
1064 synaptics_image_sensor_2f(priv, &mt_state);
1065 else if (sgm->w == 1 && mt_state.count <= 3)
1066 synaptics_image_sensor_3f(priv, &mt_state);
1067 else
1068 synaptics_image_sensor_45f(priv, &mt_state);
1069
1070 /* Send resulting input events to user space */
1071 synaptics_report_mt_data(psmouse, &mt_state, sgm);
1072
1073 /* Store updated mt_state */
1074 priv->mt_state = agm->mt_state = mt_state;
1075 priv->agm_pending = false;
1076 }
1077
1078 /*
1079 * called for each full received packet from the touchpad
1080 */
1081 static void synaptics_process_packet(struct psmouse *psmouse)
1082 {
1083 struct input_dev *dev = psmouse->dev;
1084 struct synaptics_data *priv = psmouse->private;
1085 struct synaptics_hw_state hw;
1086 int num_fingers;
1087 int finger_width;
1088
1089 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
1090 return;
1091
1092 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1093 synaptics_image_sensor_process(psmouse, &hw);
1094 return;
1095 }
1096
1097 if (hw.scroll) {
1098 priv->scroll += hw.scroll;
1099
1100 while (priv->scroll >= 4) {
1101 input_report_key(dev, BTN_BACK, !hw.down);
1102 input_sync(dev);
1103 input_report_key(dev, BTN_BACK, hw.down);
1104 input_sync(dev);
1105 priv->scroll -= 4;
1106 }
1107 while (priv->scroll <= -4) {
1108 input_report_key(dev, BTN_FORWARD, !hw.up);
1109 input_sync(dev);
1110 input_report_key(dev, BTN_FORWARD, hw.up);
1111 input_sync(dev);
1112 priv->scroll += 4;
1113 }
1114 return;
1115 }
1116
1117 if (hw.z > 0 && hw.x > 1) {
1118 num_fingers = 1;
1119 finger_width = 5;
1120 if (SYN_CAP_EXTENDED(priv->capabilities)) {
1121 switch (hw.w) {
1122 case 0 ... 1:
1123 if (SYN_CAP_MULTIFINGER(priv->capabilities))
1124 num_fingers = hw.w + 2;
1125 break;
1126 case 2:
1127 if (SYN_MODEL_PEN(priv->model_id))
1128 ; /* Nothing, treat a pen as a single finger */
1129 break;
1130 case 4 ... 15:
1131 if (SYN_CAP_PALMDETECT(priv->capabilities))
1132 finger_width = hw.w;
1133 break;
1134 }
1135 }
1136 } else {
1137 num_fingers = 0;
1138 finger_width = 0;
1139 }
1140
1141 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
1142 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
1143 num_fingers);
1144
1145 /* Post events
1146 * BTN_TOUCH has to be first as mousedev relies on it when doing
1147 * absolute -> relative conversion
1148 */
1149 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
1150 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
1151
1152 if (num_fingers > 0) {
1153 input_report_abs(dev, ABS_X, hw.x);
1154 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
1155 }
1156 input_report_abs(dev, ABS_PRESSURE, hw.z);
1157
1158 if (SYN_CAP_PALMDETECT(priv->capabilities))
1159 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
1160
1161 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
1162 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1163 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
1164 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
1165 }
1166
1167 synaptics_report_buttons(psmouse, &hw);
1168
1169 input_sync(dev);
1170 }
1171
1172 static int synaptics_validate_byte(struct psmouse *psmouse,
1173 int idx, unsigned char pkt_type)
1174 {
1175 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
1176 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
1177 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
1178 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
1179 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1180 const char *packet = psmouse->packet;
1181
1182 if (idx < 0 || idx > 4)
1183 return 0;
1184
1185 switch (pkt_type) {
1186
1187 case SYN_NEWABS:
1188 case SYN_NEWABS_RELAXED:
1189 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
1190
1191 case SYN_NEWABS_STRICT:
1192 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
1193
1194 case SYN_OLDABS:
1195 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
1196
1197 default:
1198 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
1199 return 0;
1200 }
1201 }
1202
1203 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
1204 {
1205 int i;
1206
1207 for (i = 0; i < 5; i++)
1208 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
1209 psmouse_info(psmouse, "using relaxed packet validation\n");
1210 return SYN_NEWABS_RELAXED;
1211 }
1212
1213 return SYN_NEWABS_STRICT;
1214 }
1215
1216 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1217 {
1218 struct synaptics_data *priv = psmouse->private;
1219
1220 if (psmouse->pktcnt >= 6) { /* Full packet received */
1221 if (unlikely(priv->pkt_type == SYN_NEWABS))
1222 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
1223
1224 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
1225 synaptics_is_pt_packet(psmouse->packet)) {
1226 if (priv->pt_port)
1227 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
1228 } else
1229 synaptics_process_packet(psmouse);
1230
1231 return PSMOUSE_FULL_PACKET;
1232 }
1233
1234 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
1235 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
1236 }
1237
1238 /*****************************************************************************
1239 * Driver initialization/cleanup functions
1240 ****************************************************************************/
1241 static void set_abs_position_params(struct input_dev *dev,
1242 struct synaptics_data *priv, int x_code,
1243 int y_code)
1244 {
1245 int x_min = priv->x_min ?: XMIN_NOMINAL;
1246 int x_max = priv->x_max ?: XMAX_NOMINAL;
1247 int y_min = priv->y_min ?: YMIN_NOMINAL;
1248 int y_max = priv->y_max ?: YMAX_NOMINAL;
1249 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
1250 SYN_REDUCED_FILTER_FUZZ : 0;
1251
1252 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
1253 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
1254 input_abs_set_res(dev, x_code, priv->x_res);
1255 input_abs_set_res(dev, y_code, priv->y_res);
1256 }
1257
1258 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
1259 {
1260 int i;
1261
1262 /* Things that apply to both modes */
1263 __set_bit(INPUT_PROP_POINTER, dev->propbit);
1264 __set_bit(EV_KEY, dev->evbit);
1265 __set_bit(BTN_LEFT, dev->keybit);
1266 __set_bit(BTN_RIGHT, dev->keybit);
1267
1268 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
1269 __set_bit(BTN_MIDDLE, dev->keybit);
1270
1271 if (!priv->absolute_mode) {
1272 /* Relative mode */
1273 __set_bit(EV_REL, dev->evbit);
1274 __set_bit(REL_X, dev->relbit);
1275 __set_bit(REL_Y, dev->relbit);
1276 return;
1277 }
1278
1279 /* Absolute mode */
1280 __set_bit(EV_ABS, dev->evbit);
1281 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
1282 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
1283
1284 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
1285 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1286 ABS_MT_POSITION_Y);
1287 /* Image sensors can report per-contact pressure */
1288 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
1289 input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
1290
1291 /* Image sensors can signal 4 and 5 finger clicks */
1292 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1293 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
1294 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
1295 /* Non-image sensors with AGM use semi-mt */
1296 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1297 input_mt_init_slots(dev, 2, 0);
1298 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
1299 ABS_MT_POSITION_Y);
1300 }
1301
1302 if (SYN_CAP_PALMDETECT(priv->capabilities))
1303 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
1304
1305 __set_bit(BTN_TOUCH, dev->keybit);
1306 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1307
1308 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
1309 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1310 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1311 }
1312
1313 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
1314 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
1315 __set_bit(BTN_FORWARD, dev->keybit);
1316 __set_bit(BTN_BACK, dev->keybit);
1317 }
1318
1319 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
1320 __set_bit(BTN_0 + i, dev->keybit);
1321
1322 __clear_bit(EV_REL, dev->evbit);
1323 __clear_bit(REL_X, dev->relbit);
1324 __clear_bit(REL_Y, dev->relbit);
1325
1326 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
1327 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1328 /* Clickpads report only left button */
1329 __clear_bit(BTN_RIGHT, dev->keybit);
1330 __clear_bit(BTN_MIDDLE, dev->keybit);
1331 }
1332 }
1333
1334 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
1335 void *data, char *buf)
1336 {
1337 struct synaptics_data *priv = psmouse->private;
1338
1339 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
1340 }
1341
1342 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
1343 void *data, const char *buf,
1344 size_t len)
1345 {
1346 struct synaptics_data *priv = psmouse->private;
1347 unsigned int value;
1348 int err;
1349
1350 err = kstrtouint(buf, 10, &value);
1351 if (err)
1352 return err;
1353
1354 if (value > 1)
1355 return -EINVAL;
1356
1357 if (value == priv->disable_gesture)
1358 return len;
1359
1360 priv->disable_gesture = value;
1361 if (value)
1362 priv->mode |= SYN_BIT_DISABLE_GESTURE;
1363 else
1364 priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
1365
1366 if (synaptics_mode_cmd(psmouse, priv->mode))
1367 return -EIO;
1368
1369 return len;
1370 }
1371
1372 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
1373 synaptics_show_disable_gesture,
1374 synaptics_set_disable_gesture);
1375
1376 static void synaptics_disconnect(struct psmouse *psmouse)
1377 {
1378 struct synaptics_data *priv = psmouse->private;
1379
1380 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
1381 device_remove_file(&psmouse->ps2dev.serio->dev,
1382 &psmouse_attr_disable_gesture.dattr);
1383
1384 synaptics_reset(psmouse);
1385 kfree(priv);
1386 psmouse->private = NULL;
1387 }
1388
1389 static int synaptics_reconnect(struct psmouse *psmouse)
1390 {
1391 struct synaptics_data *priv = psmouse->private;
1392 struct synaptics_data old_priv = *priv;
1393 unsigned char param[2];
1394 int retry = 0;
1395 int error;
1396
1397 do {
1398 psmouse_reset(psmouse);
1399 if (retry) {
1400 /*
1401 * On some boxes, right after resuming, the touchpad
1402 * needs some time to finish initializing (I assume
1403 * it needs time to calibrate) and start responding
1404 * to Synaptics-specific queries, so let's wait a
1405 * bit.
1406 */
1407 ssleep(1);
1408 }
1409 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
1410 error = synaptics_detect(psmouse, 0);
1411 } while (error && ++retry < 3);
1412
1413 if (error)
1414 return -1;
1415
1416 if (retry > 1)
1417 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
1418
1419 if (synaptics_query_hardware(psmouse)) {
1420 psmouse_err(psmouse, "Unable to query device.\n");
1421 return -1;
1422 }
1423
1424 if (synaptics_set_mode(psmouse)) {
1425 psmouse_err(psmouse, "Unable to initialize device.\n");
1426 return -1;
1427 }
1428
1429 if (old_priv.identity != priv->identity ||
1430 old_priv.model_id != priv->model_id ||
1431 old_priv.capabilities != priv->capabilities ||
1432 old_priv.ext_cap != priv->ext_cap) {
1433 psmouse_err(psmouse,
1434 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
1435 old_priv.identity, priv->identity,
1436 old_priv.model_id, priv->model_id,
1437 old_priv.capabilities, priv->capabilities,
1438 old_priv.ext_cap, priv->ext_cap);
1439 return -1;
1440 }
1441
1442 return 0;
1443 }
1444
1445 static bool impaired_toshiba_kbc;
1446
1447 static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
1448 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
1449 {
1450 /* Toshiba Satellite */
1451 .matches = {
1452 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1453 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1454 },
1455 },
1456 {
1457 /* Toshiba Dynabook */
1458 .matches = {
1459 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1460 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
1461 },
1462 },
1463 {
1464 /* Toshiba Portege M300 */
1465 .matches = {
1466 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1467 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
1468 },
1469
1470 },
1471 {
1472 /* Toshiba Portege M300 */
1473 .matches = {
1474 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1475 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
1476 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
1477 },
1478
1479 },
1480 #endif
1481 { }
1482 };
1483
1484 static bool broken_olpc_ec;
1485
1486 static const struct dmi_system_id olpc_dmi_table[] __initconst = {
1487 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
1488 {
1489 /* OLPC XO-1 or XO-1.5 */
1490 .matches = {
1491 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
1492 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
1493 },
1494 },
1495 #endif
1496 { }
1497 };
1498
1499 static const struct dmi_system_id min_max_dmi_table[] __initconst = {
1500 #if defined(CONFIG_DMI)
1501 {
1502 /* Lenovo ThinkPad Helix */
1503 .matches = {
1504 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1505 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Helix"),
1506 },
1507 .driver_data = (int []){1024, 5052, 2258, 4832},
1508 },
1509 {
1510 /* Lenovo ThinkPad X240 */
1511 .matches = {
1512 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1513 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X240"),
1514 },
1515 .driver_data = (int []){1232, 5710, 1156, 4696},
1516 },
1517 {
1518 /* Lenovo ThinkPad T440s */
1519 .matches = {
1520 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1521 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T440"),
1522 },
1523 .driver_data = (int []){1024, 5112, 2024, 4832},
1524 },
1525 {
1526 /* Lenovo ThinkPad T540p */
1527 .matches = {
1528 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1529 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T540"),
1530 },
1531 .driver_data = (int []){1024, 5056, 2058, 4832},
1532 },
1533 #endif
1534 { }
1535 };
1536
1537 void __init synaptics_module_init(void)
1538 {
1539 const struct dmi_system_id *min_max_dmi;
1540
1541 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
1542 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
1543
1544 min_max_dmi = dmi_first_match(min_max_dmi_table);
1545 if (min_max_dmi)
1546 quirk_min_max = min_max_dmi->driver_data;
1547 }
1548
1549 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
1550 {
1551 struct synaptics_data *priv;
1552 int err = -1;
1553
1554 /*
1555 * The OLPC XO has issues with Synaptics' absolute mode; the constant
1556 * packet spew overloads the EC such that key presses on the keyboard
1557 * are missed. Given that, don't even attempt to use Absolute mode.
1558 * Relative mode seems to work just fine.
1559 */
1560 if (absolute_mode && broken_olpc_ec) {
1561 psmouse_info(psmouse,
1562 "OLPC XO detected, not enabling Synaptics protocol.\n");
1563 return -ENODEV;
1564 }
1565
1566 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1567 if (!priv)
1568 return -ENOMEM;
1569
1570 psmouse_reset(psmouse);
1571
1572 if (synaptics_query_hardware(psmouse)) {
1573 psmouse_err(psmouse, "Unable to query device.\n");
1574 goto init_fail;
1575 }
1576
1577 priv->absolute_mode = absolute_mode;
1578 if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
1579 priv->disable_gesture = true;
1580
1581 if (synaptics_set_mode(psmouse)) {
1582 psmouse_err(psmouse, "Unable to initialize device.\n");
1583 goto init_fail;
1584 }
1585
1586 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1587
1588 psmouse_info(psmouse,
1589 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
1590 SYN_ID_MODEL(priv->identity),
1591 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1592 priv->model_id,
1593 priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
1594 priv->board_id, priv->firmware_id);
1595
1596 set_input_params(psmouse->dev, priv);
1597
1598 /*
1599 * Encode touchpad model so that it can be used to set
1600 * input device->id.version and be visible to userspace.
1601 * Because version is __u16 we have to drop something.
1602 * Hardware info bits seem to be good candidates as they
1603 * are documented to be for Synaptics corp. internal use.
1604 */
1605 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1606 (priv->model_id & 0x000000ff);
1607
1608 if (absolute_mode) {
1609 psmouse->protocol_handler = synaptics_process_byte;
1610 psmouse->pktsize = 6;
1611 } else {
1612 /* Relative mode follows standard PS/2 mouse protocol */
1613 psmouse->protocol_handler = psmouse_process_byte;
1614 psmouse->pktsize = 3;
1615 }
1616
1617 psmouse->set_rate = synaptics_set_rate;
1618 psmouse->disconnect = synaptics_disconnect;
1619 psmouse->reconnect = synaptics_reconnect;
1620 psmouse->cleanup = synaptics_reset;
1621 /* Synaptics can usually stay in sync without extra help */
1622 psmouse->resync_time = 0;
1623
1624 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1625 synaptics_pt_create(psmouse);
1626
1627 /*
1628 * Toshiba's KBC seems to have trouble handling data from
1629 * Synaptics at full rate. Switch to a lower rate (roughly
1630 * the same rate as a standard PS/2 mouse).
1631 */
1632 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1633 psmouse_info(psmouse,
1634 "Toshiba %s detected, limiting rate to 40pps.\n",
1635 dmi_get_system_info(DMI_PRODUCT_NAME));
1636 psmouse->rate = 40;
1637 }
1638
1639 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
1640 err = device_create_file(&psmouse->ps2dev.serio->dev,
1641 &psmouse_attr_disable_gesture.dattr);
1642 if (err) {
1643 psmouse_err(psmouse,
1644 "Failed to create disable_gesture attribute (%d)",
1645 err);
1646 goto init_fail;
1647 }
1648 }
1649
1650 return 0;
1651
1652 init_fail:
1653 kfree(priv);
1654 return err;
1655 }
1656
1657 int synaptics_init(struct psmouse *psmouse)
1658 {
1659 return __synaptics_init(psmouse, true);
1660 }
1661
1662 int synaptics_init_relative(struct psmouse *psmouse)
1663 {
1664 return __synaptics_init(psmouse, false);
1665 }
1666
1667 bool synaptics_supported(void)
1668 {
1669 return true;
1670 }
1671
1672 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1673
1674 void __init synaptics_module_init(void)
1675 {
1676 }
1677
1678 int synaptics_init(struct psmouse *psmouse)
1679 {
1680 return -ENOSYS;
1681 }
1682
1683 bool synaptics_supported(void)
1684 {
1685 return false;
1686 }
1687
1688 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
Linux kernel - Deliverables
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