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Staging: hv: mousevsc: Cleanup and properly implement reportdesc_callback()
[zen-stable.git] / drivers / input / mouse / synaptics.c
blob5538fc657af176b265cda6178dad06e0e8b51705
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 /*****************************************************************************
49 * Stuff we need even when we do not want native Synaptics support
50 ****************************************************************************/
51
52 /*
53 * Set the synaptics touchpad mode byte by special commands
54 */
55 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
56 {
57 unsigned char param[1];
58
59 if (psmouse_sliced_command(psmouse, mode))
60 return -1;
61 param[0] = SYN_PS_SET_MODE2;
62 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
63 return -1;
64 return 0;
65 }
66
67 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
68 {
69 struct ps2dev *ps2dev = &psmouse->ps2dev;
70 unsigned char param[4];
71
72 param[0] = 0;
73
74 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
75 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
76 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
77 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
78 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
79
80 if (param[1] != 0x47)
81 return -ENODEV;
82
83 if (set_properties) {
84 psmouse->vendor = "Synaptics";
85 psmouse->name = "TouchPad";
86 }
87
88 return 0;
89 }
90
91 void synaptics_reset(struct psmouse *psmouse)
92 {
93 /* reset touchpad back to relative mode, gestures enabled */
94 synaptics_mode_cmd(psmouse, 0);
95 }
96
97 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
98
99 /*****************************************************************************
100 * Synaptics communications functions
101 ****************************************************************************/
102
103 /*
104 * Send a command to the synpatics touchpad by special commands
105 */
106 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
107 {
108 if (psmouse_sliced_command(psmouse, c))
109 return -1;
110 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
111 return -1;
112 return 0;
113 }
114
115 /*
116 * Read the model-id bytes from the touchpad
117 * see also SYN_MODEL_* macros
118 */
119 static int synaptics_model_id(struct psmouse *psmouse)
120 {
121 struct synaptics_data *priv = psmouse->private;
122 unsigned char mi[3];
123
124 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
125 return -1;
126 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
127 return 0;
128 }
129
130 /*
131 * Read the capability-bits from the touchpad
132 * see also the SYN_CAP_* macros
133 */
134 static int synaptics_capability(struct psmouse *psmouse)
135 {
136 struct synaptics_data *priv = psmouse->private;
137 unsigned char cap[3];
138
139 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
140 return -1;
141 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
142 priv->ext_cap = priv->ext_cap_0c = 0;
143
144 /*
145 * Older firmwares had submodel ID fixed to 0x47
146 */
147 if (SYN_ID_FULL(priv->identity) < 0x705 &&
148 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
149 return -1;
150 }
151
152 /*
153 * Unless capExtended is set the rest of the flags should be ignored
154 */
155 if (!SYN_CAP_EXTENDED(priv->capabilities))
156 priv->capabilities = 0;
157
158 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
159 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
160 printk(KERN_ERR "Synaptics claims to have extended capabilities,"
161 " but I'm not able to read them.\n");
162 } else {
163 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
164
165 /*
166 * if nExtBtn is greater than 8 it should be considered
167 * invalid and treated as 0
168 */
169 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
170 priv->ext_cap &= 0xff0fff;
171 }
172 }
173
174 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
175 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
176 printk(KERN_ERR "Synaptics claims to have extended capability 0x0c,"
177 " but I'm not able to read it.\n");
178 } else {
179 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
180 }
181 }
182
183 return 0;
184 }
185
186 /*
187 * Identify Touchpad
188 * See also the SYN_ID_* macros
189 */
190 static int synaptics_identify(struct psmouse *psmouse)
191 {
192 struct synaptics_data *priv = psmouse->private;
193 unsigned char id[3];
194
195 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
196 return -1;
197 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
198 if (SYN_ID_IS_SYNAPTICS(priv->identity))
199 return 0;
200 return -1;
201 }
202
203 /*
204 * Read touchpad resolution and maximum reported coordinates
205 * Resolution is left zero if touchpad does not support the query
206 */
207 static int synaptics_resolution(struct psmouse *psmouse)
208 {
209 struct synaptics_data *priv = psmouse->private;
210 unsigned char resp[3];
211
212 if (SYN_ID_MAJOR(priv->identity) < 4)
213 return 0;
214
215 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
216 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
217 priv->x_res = resp[0]; /* x resolution in units/mm */
218 priv->y_res = resp[2]; /* y resolution in units/mm */
219 }
220 }
221
222 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
223 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
224 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
225 printk(KERN_ERR "Synaptics claims to have max coordinates"
226 " query, but I'm not able to read it.\n");
227 } else {
228 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
229 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
230 }
231 }
232
233 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
234 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
235 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
236 printk(KERN_ERR "Synaptics claims to have min coordinates"
237 " query, but I'm not able to read it.\n");
238 } else {
239 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
240 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
241 }
242 }
243
244 return 0;
245 }
246
247 static int synaptics_query_hardware(struct psmouse *psmouse)
248 {
249 if (synaptics_identify(psmouse))
250 return -1;
251 if (synaptics_model_id(psmouse))
252 return -1;
253 if (synaptics_capability(psmouse))
254 return -1;
255 if (synaptics_resolution(psmouse))
256 return -1;
257
258 return 0;
259 }
260
261 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
262 {
263 struct synaptics_data *priv = psmouse->private;
264
265 priv->mode = SYN_BIT_ABSOLUTE_MODE;
266 if (SYN_ID_MAJOR(priv->identity) >= 4)
267 priv->mode |= SYN_BIT_DISABLE_GESTURE;
268 if (SYN_CAP_EXTENDED(priv->capabilities))
269 priv->mode |= SYN_BIT_W_MODE;
270
271 if (synaptics_mode_cmd(psmouse, priv->mode))
272 return -1;
273
274 return 0;
275 }
276
277 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
278 {
279 struct synaptics_data *priv = psmouse->private;
280
281 if (rate >= 80) {
282 priv->mode |= SYN_BIT_HIGH_RATE;
283 psmouse->rate = 80;
284 } else {
285 priv->mode &= ~SYN_BIT_HIGH_RATE;
286 psmouse->rate = 40;
287 }
288
289 synaptics_mode_cmd(psmouse, priv->mode);
290 }
291
292 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
293 {
294 static unsigned char param = 0xc8;
295 struct synaptics_data *priv = psmouse->private;
296
297 if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
298 return 0;
299
300 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
301 return -1;
302 if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
303 return -1;
304
305 /* Advanced gesture mode also sends multi finger data */
306 priv->capabilities |= BIT(1);
307
308 return 0;
309 }
310
311 /*****************************************************************************
312 * Synaptics pass-through PS/2 port support
313 ****************************************************************************/
314 static int synaptics_pt_write(struct serio *serio, unsigned char c)
315 {
316 struct psmouse *parent = serio_get_drvdata(serio->parent);
317 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
318
319 if (psmouse_sliced_command(parent, c))
320 return -1;
321 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
322 return -1;
323 return 0;
324 }
325
326 static int synaptics_pt_start(struct serio *serio)
327 {
328 struct psmouse *parent = serio_get_drvdata(serio->parent);
329 struct synaptics_data *priv = parent->private;
330
331 serio_pause_rx(parent->ps2dev.serio);
332 priv->pt_port = serio;
333 serio_continue_rx(parent->ps2dev.serio);
334
335 return 0;
336 }
337
338 static void synaptics_pt_stop(struct serio *serio)
339 {
340 struct psmouse *parent = serio_get_drvdata(serio->parent);
341 struct synaptics_data *priv = parent->private;
342
343 serio_pause_rx(parent->ps2dev.serio);
344 priv->pt_port = NULL;
345 serio_continue_rx(parent->ps2dev.serio);
346 }
347
348 static int synaptics_is_pt_packet(unsigned char *buf)
349 {
350 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
351 }
352
353 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
354 {
355 struct psmouse *child = serio_get_drvdata(ptport);
356
357 if (child && child->state == PSMOUSE_ACTIVATED) {
358 serio_interrupt(ptport, packet[1], 0);
359 serio_interrupt(ptport, packet[4], 0);
360 serio_interrupt(ptport, packet[5], 0);
361 if (child->pktsize == 4)
362 serio_interrupt(ptport, packet[2], 0);
363 } else
364 serio_interrupt(ptport, packet[1], 0);
365 }
366
367 static void synaptics_pt_activate(struct psmouse *psmouse)
368 {
369 struct synaptics_data *priv = psmouse->private;
370 struct psmouse *child = serio_get_drvdata(priv->pt_port);
371
372 /* adjust the touchpad to child's choice of protocol */
373 if (child) {
374 if (child->pktsize == 4)
375 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
376 else
377 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
378
379 if (synaptics_mode_cmd(psmouse, priv->mode))
380 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
381 }
382 }
383
384 static void synaptics_pt_create(struct psmouse *psmouse)
385 {
386 struct serio *serio;
387
388 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
389 if (!serio) {
390 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
391 return;
392 }
393
394 serio->id.type = SERIO_PS_PSTHRU;
395 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
396 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
397 serio->write = synaptics_pt_write;
398 serio->start = synaptics_pt_start;
399 serio->stop = synaptics_pt_stop;
400 serio->parent = psmouse->ps2dev.serio;
401
402 psmouse->pt_activate = synaptics_pt_activate;
403
404 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
405 serio_register_port(serio);
406 }
407
408 /*****************************************************************************
409 * Functions to interpret the absolute mode packets
410 ****************************************************************************/
411
412 static int synaptics_parse_hw_state(const unsigned char buf[],
413 struct synaptics_data *priv,
414 struct synaptics_hw_state *hw)
415 {
416 memset(hw, 0, sizeof(struct synaptics_hw_state));
417
418 if (SYN_MODEL_NEWABS(priv->model_id)) {
419 hw->w = (((buf[0] & 0x30) >> 2) |
420 ((buf[0] & 0x04) >> 1) |
421 ((buf[3] & 0x04) >> 2));
422
423 hw->left = (buf[0] & 0x01) ? 1 : 0;
424 hw->right = (buf[0] & 0x02) ? 1 : 0;
425
426 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
427 /*
428 * Clickpad's button is transmitted as middle button,
429 * however, since it is primary button, we will report
430 * it as BTN_LEFT.
431 */
432 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
433
434 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
435 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
436 if (hw->w == 2)
437 hw->scroll = (signed char)(buf[1]);
438 }
439
440 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
441 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
442 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
443 }
444
445 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) {
446 /* Gesture packet: (x, y, z) at half resolution */
447 priv->mt.x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
448 priv->mt.y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
449 priv->mt.z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
450 return 1;
451 }
452
453 hw->x = (((buf[3] & 0x10) << 8) |
454 ((buf[1] & 0x0f) << 8) |
455 buf[4]);
456 hw->y = (((buf[3] & 0x20) << 7) |
457 ((buf[1] & 0xf0) << 4) |
458 buf[5]);
459 hw->z = buf[2];
460
461 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
462 ((buf[0] ^ buf[3]) & 0x02)) {
463 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
464 default:
465 /*
466 * if nExtBtn is greater than 8 it should be
467 * considered invalid and treated as 0
468 */
469 break;
470 case 8:
471 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
472 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
473 case 6:
474 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
475 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
476 case 4:
477 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
478 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
479 case 2:
480 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
481 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
482 }
483 }
484 } else {
485 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
486 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
487
488 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
489 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
490
491 hw->left = (buf[0] & 0x01) ? 1 : 0;
492 hw->right = (buf[0] & 0x02) ? 1 : 0;
493 }
494
495 return 0;
496 }
497
498 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
499 bool active, int x, int y)
500 {
501 input_mt_slot(dev, slot);
502 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
503 if (active) {
504 input_report_abs(dev, ABS_MT_POSITION_X, x);
505 input_report_abs(dev, ABS_MT_POSITION_Y,
506 YMAX_NOMINAL + YMIN_NOMINAL - y);
507 }
508 }
509
510 static void synaptics_report_semi_mt_data(struct input_dev *dev,
511 const struct synaptics_hw_state *a,
512 const struct synaptics_hw_state *b,
513 int num_fingers)
514 {
515 if (num_fingers >= 2) {
516 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
517 min(a->y, b->y));
518 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
519 max(a->y, b->y));
520 } else if (num_fingers == 1) {
521 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
522 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
523 } else {
524 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
525 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
526 }
527 }
528
529 /*
530 * called for each full received packet from the touchpad
531 */
532 static void synaptics_process_packet(struct psmouse *psmouse)
533 {
534 struct input_dev *dev = psmouse->dev;
535 struct synaptics_data *priv = psmouse->private;
536 struct synaptics_hw_state hw;
537 int num_fingers;
538 int finger_width;
539 int i;
540
541 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
542 return;
543
544 if (hw.scroll) {
545 priv->scroll += hw.scroll;
546
547 while (priv->scroll >= 4) {
548 input_report_key(dev, BTN_BACK, !hw.down);
549 input_sync(dev);
550 input_report_key(dev, BTN_BACK, hw.down);
551 input_sync(dev);
552 priv->scroll -= 4;
553 }
554 while (priv->scroll <= -4) {
555 input_report_key(dev, BTN_FORWARD, !hw.up);
556 input_sync(dev);
557 input_report_key(dev, BTN_FORWARD, hw.up);
558 input_sync(dev);
559 priv->scroll += 4;
560 }
561 return;
562 }
563
564 if (hw.z > 0 && hw.x > 1) {
565 num_fingers = 1;
566 finger_width = 5;
567 if (SYN_CAP_EXTENDED(priv->capabilities)) {
568 switch (hw.w) {
569 case 0 ... 1:
570 if (SYN_CAP_MULTIFINGER(priv->capabilities))
571 num_fingers = hw.w + 2;
572 break;
573 case 2:
574 if (SYN_MODEL_PEN(priv->model_id))
575 ; /* Nothing, treat a pen as a single finger */
576 break;
577 case 4 ... 15:
578 if (SYN_CAP_PALMDETECT(priv->capabilities))
579 finger_width = hw.w;
580 break;
581 }
582 }
583 } else {
584 num_fingers = 0;
585 finger_width = 0;
586 }
587
588 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
589 synaptics_report_semi_mt_data(dev, &hw, &priv->mt, num_fingers);
590
591 /* Post events
592 * BTN_TOUCH has to be first as mousedev relies on it when doing
593 * absolute -> relative conversion
594 */
595 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
596 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
597
598 if (num_fingers > 0) {
599 input_report_abs(dev, ABS_X, hw.x);
600 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
601 }
602 input_report_abs(dev, ABS_PRESSURE, hw.z);
603
604 if (SYN_CAP_PALMDETECT(priv->capabilities))
605 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
606
607 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
608 input_report_key(dev, BTN_LEFT, hw.left);
609 input_report_key(dev, BTN_RIGHT, hw.right);
610
611 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
612 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
613 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
614 }
615
616 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
617 input_report_key(dev, BTN_MIDDLE, hw.middle);
618
619 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
620 input_report_key(dev, BTN_FORWARD, hw.up);
621 input_report_key(dev, BTN_BACK, hw.down);
622 }
623
624 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
625 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
626
627 input_sync(dev);
628 }
629
630 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
631 {
632 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
633 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
634 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
635 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
636 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
637
638 if (idx < 0 || idx > 4)
639 return 0;
640
641 switch (pkt_type) {
642
643 case SYN_NEWABS:
644 case SYN_NEWABS_RELAXED:
645 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
646
647 case SYN_NEWABS_STRICT:
648 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
649
650 case SYN_OLDABS:
651 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
652
653 default:
654 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
655 return 0;
656 }
657 }
658
659 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
660 {
661 int i;
662
663 for (i = 0; i < 5; i++)
664 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
665 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
666 return SYN_NEWABS_RELAXED;
667 }
668
669 return SYN_NEWABS_STRICT;
670 }
671
672 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
673 {
674 struct synaptics_data *priv = psmouse->private;
675
676 if (psmouse->pktcnt >= 6) { /* Full packet received */
677 if (unlikely(priv->pkt_type == SYN_NEWABS))
678 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
679
680 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
681 synaptics_is_pt_packet(psmouse->packet)) {
682 if (priv->pt_port)
683 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
684 } else
685 synaptics_process_packet(psmouse);
686
687 return PSMOUSE_FULL_PACKET;
688 }
689
690 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
691 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
692 }
693
694 /*****************************************************************************
695 * Driver initialization/cleanup functions
696 ****************************************************************************/
697 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
698 {
699 int i;
700 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
701 SYN_REDUCED_FILTER_FUZZ : 0;
702
703 __set_bit(INPUT_PROP_POINTER, dev->propbit);
704
705 __set_bit(EV_ABS, dev->evbit);
706 input_set_abs_params(dev, ABS_X,
707 priv->x_min ?: XMIN_NOMINAL,
708 priv->x_max ?: XMAX_NOMINAL,
709 fuzz, 0);
710 input_set_abs_params(dev, ABS_Y,
711 priv->y_min ?: YMIN_NOMINAL,
712 priv->y_max ?: YMAX_NOMINAL,
713 fuzz, 0);
714 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
715
716 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
717 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
718 input_mt_init_slots(dev, 2);
719 input_set_abs_params(dev, ABS_MT_POSITION_X,
720 priv->x_min ?: XMIN_NOMINAL,
721 priv->x_max ?: XMAX_NOMINAL,
722 fuzz, 0);
723 input_set_abs_params(dev, ABS_MT_POSITION_Y,
724 priv->y_min ?: YMIN_NOMINAL,
725 priv->y_max ?: YMAX_NOMINAL,
726 fuzz, 0);
727
728 input_abs_set_res(dev, ABS_MT_POSITION_X, priv->x_res);
729 input_abs_set_res(dev, ABS_MT_POSITION_Y, priv->y_res);
730 }
731
732 if (SYN_CAP_PALMDETECT(priv->capabilities))
733 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
734
735 __set_bit(EV_KEY, dev->evbit);
736 __set_bit(BTN_TOUCH, dev->keybit);
737 __set_bit(BTN_TOOL_FINGER, dev->keybit);
738 __set_bit(BTN_LEFT, dev->keybit);
739 __set_bit(BTN_RIGHT, dev->keybit);
740
741 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
742 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
743 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
744 }
745
746 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
747 __set_bit(BTN_MIDDLE, dev->keybit);
748
749 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
750 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
751 __set_bit(BTN_FORWARD, dev->keybit);
752 __set_bit(BTN_BACK, dev->keybit);
753 }
754
755 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
756 __set_bit(BTN_0 + i, dev->keybit);
757
758 __clear_bit(EV_REL, dev->evbit);
759 __clear_bit(REL_X, dev->relbit);
760 __clear_bit(REL_Y, dev->relbit);
761
762 input_abs_set_res(dev, ABS_X, priv->x_res);
763 input_abs_set_res(dev, ABS_Y, priv->y_res);
764
765 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
766 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
767 /* Clickpads report only left button */
768 __clear_bit(BTN_RIGHT, dev->keybit);
769 __clear_bit(BTN_MIDDLE, dev->keybit);
770 }
771 }
772
773 static void synaptics_disconnect(struct psmouse *psmouse)
774 {
775 synaptics_reset(psmouse);
776 kfree(psmouse->private);
777 psmouse->private = NULL;
778 }
779
780 static int synaptics_reconnect(struct psmouse *psmouse)
781 {
782 struct synaptics_data *priv = psmouse->private;
783 struct synaptics_data old_priv = *priv;
784 int retry = 0;
785 int error;
786
787 do {
788 psmouse_reset(psmouse);
789 error = synaptics_detect(psmouse, 0);
790 } while (error && ++retry < 3);
791
792 if (error)
793 return -1;
794
795 if (retry > 1)
796 printk(KERN_DEBUG "Synaptics reconnected after %d tries\n",
797 retry);
798
799 if (synaptics_query_hardware(psmouse)) {
800 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
801 return -1;
802 }
803
804 if (synaptics_set_absolute_mode(psmouse)) {
805 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
806 return -1;
807 }
808
809 if (synaptics_set_advanced_gesture_mode(psmouse)) {
810 printk(KERN_ERR "Advanced gesture mode reconnect failed.\n");
811 return -1;
812 }
813
814 if (old_priv.identity != priv->identity ||
815 old_priv.model_id != priv->model_id ||
816 old_priv.capabilities != priv->capabilities ||
817 old_priv.ext_cap != priv->ext_cap) {
818 printk(KERN_ERR "Synaptics hardware appears to be different: "
819 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
820 old_priv.identity, priv->identity,
821 old_priv.model_id, priv->model_id,
822 old_priv.capabilities, priv->capabilities,
823 old_priv.ext_cap, priv->ext_cap);
824 return -1;
825 }
826
827 return 0;
828 }
829
830 static bool impaired_toshiba_kbc;
831
832 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
833 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
834 {
835 /* Toshiba Satellite */
836 .matches = {
837 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
838 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
839 },
840 },
841 {
842 /* Toshiba Dynabook */
843 .matches = {
844 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
845 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
846 },
847 },
848 {
849 /* Toshiba Portege M300 */
850 .matches = {
851 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
852 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
853 },
854
855 },
856 {
857 /* Toshiba Portege M300 */
858 .matches = {
859 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
860 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
861 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
862 },
863
864 },
865 #endif
866 { }
867 };
868
869 static bool broken_olpc_ec;
870
871 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
872 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
873 {
874 /* OLPC XO-1 or XO-1.5 */
875 .matches = {
876 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
877 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
878 },
879 },
880 #endif
881 { }
882 };
883
884 void __init synaptics_module_init(void)
885 {
886 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
887 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
888 }
889
890 int synaptics_init(struct psmouse *psmouse)
891 {
892 struct synaptics_data *priv;
893
894 /*
895 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
896 * the HGPK, it quickly degrades and the hardware becomes jumpy and
897 * overly sensitive. Not only that, but the constant packet spew
898 * (even at a lowered 40pps rate) overloads the EC such that key
899 * presses on the keyboard are missed. Given all of that, don't
900 * even attempt to use Synaptics mode. Relative mode seems to work
901 * just fine.
902 */
903 if (broken_olpc_ec) {
904 printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
905 return -ENODEV;
906 }
907
908 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
909 if (!priv)
910 return -ENOMEM;
911
912 psmouse_reset(psmouse);
913
914 if (synaptics_query_hardware(psmouse)) {
915 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
916 goto init_fail;
917 }
918
919 if (synaptics_set_absolute_mode(psmouse)) {
920 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
921 goto init_fail;
922 }
923
924 if (synaptics_set_advanced_gesture_mode(psmouse)) {
925 printk(KERN_ERR "Advanced gesture mode init failed.\n");
926 goto init_fail;
927 }
928
929 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
930
931 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
932 SYN_ID_MODEL(priv->identity),
933 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
934 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
935
936 set_input_params(psmouse->dev, priv);
937
938 /*
939 * Encode touchpad model so that it can be used to set
940 * input device->id.version and be visible to userspace.
941 * Because version is __u16 we have to drop something.
942 * Hardware info bits seem to be good candidates as they
943 * are documented to be for Synaptics corp. internal use.
944 */
945 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
946 (priv->model_id & 0x000000ff);
947
948 psmouse->protocol_handler = synaptics_process_byte;
949 psmouse->set_rate = synaptics_set_rate;
950 psmouse->disconnect = synaptics_disconnect;
951 psmouse->reconnect = synaptics_reconnect;
952 psmouse->cleanup = synaptics_reset;
953 psmouse->pktsize = 6;
954 /* Synaptics can usually stay in sync without extra help */
955 psmouse->resync_time = 0;
956
957 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
958 synaptics_pt_create(psmouse);
959
960 /*
961 * Toshiba's KBC seems to have trouble handling data from
962 * Synaptics at full rate. Switch to a lower rate (roughly
963 * the same rate as a standard PS/2 mouse).
964 */
965 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
966 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
967 dmi_get_system_info(DMI_PRODUCT_NAME));
968 psmouse->rate = 40;
969 }
970
971 return 0;
972
973 init_fail:
974 kfree(priv);
975 return -1;
976 }
977
978 bool synaptics_supported(void)
979 {
980 return true;
981 }
982
983 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
984
985 void __init synaptics_module_init(void)
986 {
987 }
988
989 int synaptics_init(struct psmouse *psmouse)
990 {
991 return -ENOSYS;
992 }
993
994 bool synaptics_supported(void)
995 {
996 return false;
997 }
998
999 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */