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Input: synaptics - refactor agm packet parsing
[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/dmi.h>
28 #include <linux/input/mt.h>
29 #include <linux/serio.h>
30 #include <linux/libps2.h>
31 #include <linux/slab.h>
32 #include "psmouse.h"
33 #include "synaptics.h"
34
35 /*
36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
37 * section 2.3.2, which says that they should be valid regardless of the
38 * actual size of the sensor.
39 * Note that newer firmware allows querying device for maximum useable
40 * coordinates.
41 */
42 #define XMIN_NOMINAL 1472
43 #define XMAX_NOMINAL 5472
44 #define YMIN_NOMINAL 1408
45 #define YMAX_NOMINAL 4448
46
47 /*
48 * Synaptics touchpads report the y coordinate from bottom to top, which is
49 * opposite from what userspace expects.
50 * This function is used to invert y before reporting.
51 */
52 static int synaptics_invert_y(int y)
53 {
54 return YMAX_NOMINAL + YMIN_NOMINAL - y;
55 }
56
57
58 /*****************************************************************************
59 * Stuff we need even when we do not want native Synaptics support
60 ****************************************************************************/
61
62 /*
63 * Set the synaptics touchpad mode byte by special commands
64 */
65 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
66 {
67 unsigned char param[1];
68
69 if (psmouse_sliced_command(psmouse, mode))
70 return -1;
71 param[0] = SYN_PS_SET_MODE2;
72 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
73 return -1;
74 return 0;
75 }
76
77 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
78 {
79 struct ps2dev *ps2dev = &psmouse->ps2dev;
80 unsigned char param[4];
81
82 param[0] = 0;
83
84 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
85 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
86 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
87 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
88 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
89
90 if (param[1] != 0x47)
91 return -ENODEV;
92
93 if (set_properties) {
94 psmouse->vendor = "Synaptics";
95 psmouse->name = "TouchPad";
96 }
97
98 return 0;
99 }
100
101 void synaptics_reset(struct psmouse *psmouse)
102 {
103 /* reset touchpad back to relative mode, gestures enabled */
104 synaptics_mode_cmd(psmouse, 0);
105 }
106
107 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
108
109 /*****************************************************************************
110 * Synaptics communications functions
111 ****************************************************************************/
112
113 /*
114 * Send a command to the synpatics touchpad by special commands
115 */
116 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
117 {
118 if (psmouse_sliced_command(psmouse, c))
119 return -1;
120 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
121 return -1;
122 return 0;
123 }
124
125 /*
126 * Read the model-id bytes from the touchpad
127 * see also SYN_MODEL_* macros
128 */
129 static int synaptics_model_id(struct psmouse *psmouse)
130 {
131 struct synaptics_data *priv = psmouse->private;
132 unsigned char mi[3];
133
134 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
135 return -1;
136 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
137 return 0;
138 }
139
140 /*
141 * Read the capability-bits from the touchpad
142 * see also the SYN_CAP_* macros
143 */
144 static int synaptics_capability(struct psmouse *psmouse)
145 {
146 struct synaptics_data *priv = psmouse->private;
147 unsigned char cap[3];
148
149 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
150 return -1;
151 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
152 priv->ext_cap = priv->ext_cap_0c = 0;
153
154 /*
155 * Older firmwares had submodel ID fixed to 0x47
156 */
157 if (SYN_ID_FULL(priv->identity) < 0x705 &&
158 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
159 return -1;
160 }
161
162 /*
163 * Unless capExtended is set the rest of the flags should be ignored
164 */
165 if (!SYN_CAP_EXTENDED(priv->capabilities))
166 priv->capabilities = 0;
167
168 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
169 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
170 printk(KERN_ERR "Synaptics claims to have extended capabilities,"
171 " but I'm not able to read them.\n");
172 } else {
173 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
174
175 /*
176 * if nExtBtn is greater than 8 it should be considered
177 * invalid and treated as 0
178 */
179 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
180 priv->ext_cap &= 0xff0fff;
181 }
182 }
183
184 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
185 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
186 printk(KERN_ERR "Synaptics claims to have extended capability 0x0c,"
187 " but I'm not able to read it.\n");
188 } else {
189 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
190 }
191 }
192
193 return 0;
194 }
195
196 /*
197 * Identify Touchpad
198 * See also the SYN_ID_* macros
199 */
200 static int synaptics_identify(struct psmouse *psmouse)
201 {
202 struct synaptics_data *priv = psmouse->private;
203 unsigned char id[3];
204
205 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
206 return -1;
207 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
208 if (SYN_ID_IS_SYNAPTICS(priv->identity))
209 return 0;
210 return -1;
211 }
212
213 /*
214 * Read touchpad resolution and maximum reported coordinates
215 * Resolution is left zero if touchpad does not support the query
216 */
217 static int synaptics_resolution(struct psmouse *psmouse)
218 {
219 struct synaptics_data *priv = psmouse->private;
220 unsigned char resp[3];
221
222 if (SYN_ID_MAJOR(priv->identity) < 4)
223 return 0;
224
225 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
226 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
227 priv->x_res = resp[0]; /* x resolution in units/mm */
228 priv->y_res = resp[2]; /* y resolution in units/mm */
229 }
230 }
231
232 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
233 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
234 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
235 printk(KERN_ERR "Synaptics claims to have max coordinates"
236 " query, but I'm not able to read it.\n");
237 } else {
238 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
239 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
240 }
241 }
242
243 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
244 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
245 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
246 printk(KERN_ERR "Synaptics claims to have min coordinates"
247 " query, but I'm not able to read it.\n");
248 } else {
249 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
250 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
251 }
252 }
253
254 return 0;
255 }
256
257 static int synaptics_query_hardware(struct psmouse *psmouse)
258 {
259 if (synaptics_identify(psmouse))
260 return -1;
261 if (synaptics_model_id(psmouse))
262 return -1;
263 if (synaptics_capability(psmouse))
264 return -1;
265 if (synaptics_resolution(psmouse))
266 return -1;
267
268 return 0;
269 }
270
271 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
272 {
273 struct synaptics_data *priv = psmouse->private;
274
275 priv->mode = SYN_BIT_ABSOLUTE_MODE;
276 if (SYN_ID_MAJOR(priv->identity) >= 4)
277 priv->mode |= SYN_BIT_DISABLE_GESTURE;
278 if (SYN_CAP_EXTENDED(priv->capabilities))
279 priv->mode |= SYN_BIT_W_MODE;
280
281 if (synaptics_mode_cmd(psmouse, priv->mode))
282 return -1;
283
284 return 0;
285 }
286
287 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
288 {
289 struct synaptics_data *priv = psmouse->private;
290
291 if (rate >= 80) {
292 priv->mode |= SYN_BIT_HIGH_RATE;
293 psmouse->rate = 80;
294 } else {
295 priv->mode &= ~SYN_BIT_HIGH_RATE;
296 psmouse->rate = 40;
297 }
298
299 synaptics_mode_cmd(psmouse, priv->mode);
300 }
301
302 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
303 {
304 static unsigned char param = 0xc8;
305 struct synaptics_data *priv = psmouse->private;
306
307 if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
308 return 0;
309
310 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
311 return -1;
312 if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
313 return -1;
314
315 /* Advanced gesture mode also sends multi finger data */
316 priv->capabilities |= BIT(1);
317
318 return 0;
319 }
320
321 /*****************************************************************************
322 * Synaptics pass-through PS/2 port support
323 ****************************************************************************/
324 static int synaptics_pt_write(struct serio *serio, unsigned char c)
325 {
326 struct psmouse *parent = serio_get_drvdata(serio->parent);
327 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
328
329 if (psmouse_sliced_command(parent, c))
330 return -1;
331 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
332 return -1;
333 return 0;
334 }
335
336 static int synaptics_pt_start(struct serio *serio)
337 {
338 struct psmouse *parent = serio_get_drvdata(serio->parent);
339 struct synaptics_data *priv = parent->private;
340
341 serio_pause_rx(parent->ps2dev.serio);
342 priv->pt_port = serio;
343 serio_continue_rx(parent->ps2dev.serio);
344
345 return 0;
346 }
347
348 static void synaptics_pt_stop(struct serio *serio)
349 {
350 struct psmouse *parent = serio_get_drvdata(serio->parent);
351 struct synaptics_data *priv = parent->private;
352
353 serio_pause_rx(parent->ps2dev.serio);
354 priv->pt_port = NULL;
355 serio_continue_rx(parent->ps2dev.serio);
356 }
357
358 static int synaptics_is_pt_packet(unsigned char *buf)
359 {
360 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
361 }
362
363 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
364 {
365 struct psmouse *child = serio_get_drvdata(ptport);
366
367 if (child && child->state == PSMOUSE_ACTIVATED) {
368 serio_interrupt(ptport, packet[1], 0);
369 serio_interrupt(ptport, packet[4], 0);
370 serio_interrupt(ptport, packet[5], 0);
371 if (child->pktsize == 4)
372 serio_interrupt(ptport, packet[2], 0);
373 } else
374 serio_interrupt(ptport, packet[1], 0);
375 }
376
377 static void synaptics_pt_activate(struct psmouse *psmouse)
378 {
379 struct synaptics_data *priv = psmouse->private;
380 struct psmouse *child = serio_get_drvdata(priv->pt_port);
381
382 /* adjust the touchpad to child's choice of protocol */
383 if (child) {
384 if (child->pktsize == 4)
385 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
386 else
387 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
388
389 if (synaptics_mode_cmd(psmouse, priv->mode))
390 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
391 }
392 }
393
394 static void synaptics_pt_create(struct psmouse *psmouse)
395 {
396 struct serio *serio;
397
398 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
399 if (!serio) {
400 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
401 return;
402 }
403
404 serio->id.type = SERIO_PS_PSTHRU;
405 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
406 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
407 serio->write = synaptics_pt_write;
408 serio->start = synaptics_pt_start;
409 serio->stop = synaptics_pt_stop;
410 serio->parent = psmouse->ps2dev.serio;
411
412 psmouse->pt_activate = synaptics_pt_activate;
413
414 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
415 serio_register_port(serio);
416 }
417
418 /*****************************************************************************
419 * Functions to interpret the absolute mode packets
420 ****************************************************************************/
421
422 static void synaptics_parse_agm(const unsigned char buf[],
423 struct synaptics_data *priv)
424 {
425 struct synaptics_hw_state *agm = &priv->agm;
426
427 /* Gesture packet: (x, y, z) at half resolution */
428 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
429 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
430 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
431 }
432
433 static int synaptics_parse_hw_state(const unsigned char buf[],
434 struct synaptics_data *priv,
435 struct synaptics_hw_state *hw)
436 {
437 memset(hw, 0, sizeof(struct synaptics_hw_state));
438
439 if (SYN_MODEL_NEWABS(priv->model_id)) {
440 hw->w = (((buf[0] & 0x30) >> 2) |
441 ((buf[0] & 0x04) >> 1) |
442 ((buf[3] & 0x04) >> 2));
443
444 hw->left = (buf[0] & 0x01) ? 1 : 0;
445 hw->right = (buf[0] & 0x02) ? 1 : 0;
446
447 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
448 /*
449 * Clickpad's button is transmitted as middle button,
450 * however, since it is primary button, we will report
451 * it as BTN_LEFT.
452 */
453 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
454
455 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
456 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
457 if (hw->w == 2)
458 hw->scroll = (signed char)(buf[1]);
459 }
460
461 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
462 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
463 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
464 }
465
466 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) {
467 synaptics_parse_agm(buf, priv);
468 return 1;
469 }
470
471 hw->x = (((buf[3] & 0x10) << 8) |
472 ((buf[1] & 0x0f) << 8) |
473 buf[4]);
474 hw->y = (((buf[3] & 0x20) << 7) |
475 ((buf[1] & 0xf0) << 4) |
476 buf[5]);
477 hw->z = buf[2];
478
479 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
480 ((buf[0] ^ buf[3]) & 0x02)) {
481 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
482 default:
483 /*
484 * if nExtBtn is greater than 8 it should be
485 * considered invalid and treated as 0
486 */
487 break;
488 case 8:
489 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
490 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
491 case 6:
492 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
493 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
494 case 4:
495 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
496 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
497 case 2:
498 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
499 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
500 }
501 }
502 } else {
503 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
504 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
505
506 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
507 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
508
509 hw->left = (buf[0] & 0x01) ? 1 : 0;
510 hw->right = (buf[0] & 0x02) ? 1 : 0;
511 }
512
513 return 0;
514 }
515
516 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
517 bool active, int x, int y)
518 {
519 input_mt_slot(dev, slot);
520 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
521 if (active) {
522 input_report_abs(dev, ABS_MT_POSITION_X, x);
523 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
524 }
525 }
526
527 static void synaptics_report_semi_mt_data(struct input_dev *dev,
528 const struct synaptics_hw_state *a,
529 const struct synaptics_hw_state *b,
530 int num_fingers)
531 {
532 if (num_fingers >= 2) {
533 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
534 min(a->y, b->y));
535 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
536 max(a->y, b->y));
537 } else if (num_fingers == 1) {
538 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
539 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
540 } else {
541 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
542 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
543 }
544 }
545
546 /*
547 * called for each full received packet from the touchpad
548 */
549 static void synaptics_process_packet(struct psmouse *psmouse)
550 {
551 struct input_dev *dev = psmouse->dev;
552 struct synaptics_data *priv = psmouse->private;
553 struct synaptics_hw_state hw;
554 int num_fingers;
555 int finger_width;
556 int i;
557
558 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
559 return;
560
561 if (hw.scroll) {
562 priv->scroll += hw.scroll;
563
564 while (priv->scroll >= 4) {
565 input_report_key(dev, BTN_BACK, !hw.down);
566 input_sync(dev);
567 input_report_key(dev, BTN_BACK, hw.down);
568 input_sync(dev);
569 priv->scroll -= 4;
570 }
571 while (priv->scroll <= -4) {
572 input_report_key(dev, BTN_FORWARD, !hw.up);
573 input_sync(dev);
574 input_report_key(dev, BTN_FORWARD, hw.up);
575 input_sync(dev);
576 priv->scroll += 4;
577 }
578 return;
579 }
580
581 if (hw.z > 0 && hw.x > 1) {
582 num_fingers = 1;
583 finger_width = 5;
584 if (SYN_CAP_EXTENDED(priv->capabilities)) {
585 switch (hw.w) {
586 case 0 ... 1:
587 if (SYN_CAP_MULTIFINGER(priv->capabilities))
588 num_fingers = hw.w + 2;
589 break;
590 case 2:
591 if (SYN_MODEL_PEN(priv->model_id))
592 ; /* Nothing, treat a pen as a single finger */
593 break;
594 case 4 ... 15:
595 if (SYN_CAP_PALMDETECT(priv->capabilities))
596 finger_width = hw.w;
597 break;
598 }
599 }
600 } else {
601 num_fingers = 0;
602 finger_width = 0;
603 }
604
605 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
606 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
607 num_fingers);
608
609 /* Post events
610 * BTN_TOUCH has to be first as mousedev relies on it when doing
611 * absolute -> relative conversion
612 */
613 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
614 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
615
616 if (num_fingers > 0) {
617 input_report_abs(dev, ABS_X, hw.x);
618 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
619 }
620 input_report_abs(dev, ABS_PRESSURE, hw.z);
621
622 if (SYN_CAP_PALMDETECT(priv->capabilities))
623 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
624
625 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
626 input_report_key(dev, BTN_LEFT, hw.left);
627 input_report_key(dev, BTN_RIGHT, hw.right);
628
629 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
630 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
631 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
632 }
633
634 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
635 input_report_key(dev, BTN_MIDDLE, hw.middle);
636
637 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
638 input_report_key(dev, BTN_FORWARD, hw.up);
639 input_report_key(dev, BTN_BACK, hw.down);
640 }
641
642 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
643 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
644
645 input_sync(dev);
646 }
647
648 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
649 {
650 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
651 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
652 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
653 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
654 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
655
656 if (idx < 0 || idx > 4)
657 return 0;
658
659 switch (pkt_type) {
660
661 case SYN_NEWABS:
662 case SYN_NEWABS_RELAXED:
663 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
664
665 case SYN_NEWABS_STRICT:
666 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
667
668 case SYN_OLDABS:
669 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
670
671 default:
672 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
673 return 0;
674 }
675 }
676
677 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
678 {
679 int i;
680
681 for (i = 0; i < 5; i++)
682 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
683 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
684 return SYN_NEWABS_RELAXED;
685 }
686
687 return SYN_NEWABS_STRICT;
688 }
689
690 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
691 {
692 struct synaptics_data *priv = psmouse->private;
693
694 if (psmouse->pktcnt >= 6) { /* Full packet received */
695 if (unlikely(priv->pkt_type == SYN_NEWABS))
696 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
697
698 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
699 synaptics_is_pt_packet(psmouse->packet)) {
700 if (priv->pt_port)
701 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
702 } else
703 synaptics_process_packet(psmouse);
704
705 return PSMOUSE_FULL_PACKET;
706 }
707
708 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
709 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
710 }
711
712 /*****************************************************************************
713 * Driver initialization/cleanup functions
714 ****************************************************************************/
715 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
716 {
717 int i;
718 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
719 SYN_REDUCED_FILTER_FUZZ : 0;
720
721 __set_bit(INPUT_PROP_POINTER, dev->propbit);
722
723 __set_bit(EV_ABS, dev->evbit);
724 input_set_abs_params(dev, ABS_X,
725 priv->x_min ?: XMIN_NOMINAL,
726 priv->x_max ?: XMAX_NOMINAL,
727 fuzz, 0);
728 input_set_abs_params(dev, ABS_Y,
729 priv->y_min ?: YMIN_NOMINAL,
730 priv->y_max ?: YMAX_NOMINAL,
731 fuzz, 0);
732 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
733
734 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
735 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
736 input_mt_init_slots(dev, 2);
737 input_set_abs_params(dev, ABS_MT_POSITION_X,
738 priv->x_min ?: XMIN_NOMINAL,
739 priv->x_max ?: XMAX_NOMINAL,
740 fuzz, 0);
741 input_set_abs_params(dev, ABS_MT_POSITION_Y,
742 priv->y_min ?: YMIN_NOMINAL,
743 priv->y_max ?: YMAX_NOMINAL,
744 fuzz, 0);
745
746 input_abs_set_res(dev, ABS_MT_POSITION_X, priv->x_res);
747 input_abs_set_res(dev, ABS_MT_POSITION_Y, priv->y_res);
748 }
749
750 if (SYN_CAP_PALMDETECT(priv->capabilities))
751 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
752
753 __set_bit(EV_KEY, dev->evbit);
754 __set_bit(BTN_TOUCH, dev->keybit);
755 __set_bit(BTN_TOOL_FINGER, dev->keybit);
756 __set_bit(BTN_LEFT, dev->keybit);
757 __set_bit(BTN_RIGHT, dev->keybit);
758
759 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
760 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
761 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
762 }
763
764 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
765 __set_bit(BTN_MIDDLE, dev->keybit);
766
767 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
768 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
769 __set_bit(BTN_FORWARD, dev->keybit);
770 __set_bit(BTN_BACK, dev->keybit);
771 }
772
773 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
774 __set_bit(BTN_0 + i, dev->keybit);
775
776 __clear_bit(EV_REL, dev->evbit);
777 __clear_bit(REL_X, dev->relbit);
778 __clear_bit(REL_Y, dev->relbit);
779
780 input_abs_set_res(dev, ABS_X, priv->x_res);
781 input_abs_set_res(dev, ABS_Y, priv->y_res);
782
783 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
784 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
785 /* Clickpads report only left button */
786 __clear_bit(BTN_RIGHT, dev->keybit);
787 __clear_bit(BTN_MIDDLE, dev->keybit);
788 }
789 }
790
791 static void synaptics_disconnect(struct psmouse *psmouse)
792 {
793 synaptics_reset(psmouse);
794 kfree(psmouse->private);
795 psmouse->private = NULL;
796 }
797
798 static int synaptics_reconnect(struct psmouse *psmouse)
799 {
800 struct synaptics_data *priv = psmouse->private;
801 struct synaptics_data old_priv = *priv;
802 int retry = 0;
803 int error;
804
805 do {
806 psmouse_reset(psmouse);
807 error = synaptics_detect(psmouse, 0);
808 } while (error && ++retry < 3);
809
810 if (error)
811 return -1;
812
813 if (retry > 1)
814 printk(KERN_DEBUG "Synaptics reconnected after %d tries\n",
815 retry);
816
817 if (synaptics_query_hardware(psmouse)) {
818 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
819 return -1;
820 }
821
822 if (synaptics_set_absolute_mode(psmouse)) {
823 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
824 return -1;
825 }
826
827 if (synaptics_set_advanced_gesture_mode(psmouse)) {
828 printk(KERN_ERR "Advanced gesture mode reconnect failed.\n");
829 return -1;
830 }
831
832 if (old_priv.identity != priv->identity ||
833 old_priv.model_id != priv->model_id ||
834 old_priv.capabilities != priv->capabilities ||
835 old_priv.ext_cap != priv->ext_cap) {
836 printk(KERN_ERR "Synaptics hardware appears to be different: "
837 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
838 old_priv.identity, priv->identity,
839 old_priv.model_id, priv->model_id,
840 old_priv.capabilities, priv->capabilities,
841 old_priv.ext_cap, priv->ext_cap);
842 return -1;
843 }
844
845 return 0;
846 }
847
848 static bool impaired_toshiba_kbc;
849
850 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
851 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
852 {
853 /* Toshiba Satellite */
854 .matches = {
855 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
856 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
857 },
858 },
859 {
860 /* Toshiba Dynabook */
861 .matches = {
862 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
863 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
864 },
865 },
866 {
867 /* Toshiba Portege M300 */
868 .matches = {
869 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
870 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
871 },
872
873 },
874 {
875 /* Toshiba Portege M300 */
876 .matches = {
877 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
878 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
879 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
880 },
881
882 },
883 #endif
884 { }
885 };
886
887 static bool broken_olpc_ec;
888
889 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
890 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
891 {
892 /* OLPC XO-1 or XO-1.5 */
893 .matches = {
894 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
895 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
896 },
897 },
898 #endif
899 { }
900 };
901
902 void __init synaptics_module_init(void)
903 {
904 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
905 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
906 }
907
908 int synaptics_init(struct psmouse *psmouse)
909 {
910 struct synaptics_data *priv;
911
912 /*
913 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
914 * the HGPK, it quickly degrades and the hardware becomes jumpy and
915 * overly sensitive. Not only that, but the constant packet spew
916 * (even at a lowered 40pps rate) overloads the EC such that key
917 * presses on the keyboard are missed. Given all of that, don't
918 * even attempt to use Synaptics mode. Relative mode seems to work
919 * just fine.
920 */
921 if (broken_olpc_ec) {
922 printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
923 return -ENODEV;
924 }
925
926 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
927 if (!priv)
928 return -ENOMEM;
929
930 psmouse_reset(psmouse);
931
932 if (synaptics_query_hardware(psmouse)) {
933 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
934 goto init_fail;
935 }
936
937 if (synaptics_set_absolute_mode(psmouse)) {
938 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
939 goto init_fail;
940 }
941
942 if (synaptics_set_advanced_gesture_mode(psmouse)) {
943 printk(KERN_ERR "Advanced gesture mode init failed.\n");
944 goto init_fail;
945 }
946
947 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
948
949 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
950 SYN_ID_MODEL(priv->identity),
951 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
952 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
953
954 set_input_params(psmouse->dev, priv);
955
956 /*
957 * Encode touchpad model so that it can be used to set
958 * input device->id.version and be visible to userspace.
959 * Because version is __u16 we have to drop something.
960 * Hardware info bits seem to be good candidates as they
961 * are documented to be for Synaptics corp. internal use.
962 */
963 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
964 (priv->model_id & 0x000000ff);
965
966 psmouse->protocol_handler = synaptics_process_byte;
967 psmouse->set_rate = synaptics_set_rate;
968 psmouse->disconnect = synaptics_disconnect;
969 psmouse->reconnect = synaptics_reconnect;
970 psmouse->cleanup = synaptics_reset;
971 psmouse->pktsize = 6;
972 /* Synaptics can usually stay in sync without extra help */
973 psmouse->resync_time = 0;
974
975 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
976 synaptics_pt_create(psmouse);
977
978 /*
979 * Toshiba's KBC seems to have trouble handling data from
980 * Synaptics at full rate. Switch to a lower rate (roughly
981 * the same rate as a standard PS/2 mouse).
982 */
983 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
984 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
985 dmi_get_system_info(DMI_PRODUCT_NAME));
986 psmouse->rate = 40;
987 }
988
989 return 0;
990
991 init_fail:
992 kfree(priv);
993 return -1;
994 }
995
996 bool synaptics_supported(void)
997 {
998 return true;
999 }
1000
1001 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1002
1003 void __init synaptics_module_init(void)
1004 {
1005 }
1006
1007 int synaptics_init(struct psmouse *psmouse)
1008 {
1009 return -ENOSYS;
1010 }
1011
1012 bool synaptics_supported(void)
1013 {
1014 return false;
1015 }
1016
1017 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
Linux kernel - Deliverables
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