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Input: synaptics - add image sensor support
[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 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
309 return 0;
310
311 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
312 return -1;
313 if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
314 return -1;
315
316 /* Advanced gesture mode also sends multi finger data */
317 priv->capabilities |= BIT(1);
318
319 return 0;
320 }
321
322 /*****************************************************************************
323 * Synaptics pass-through PS/2 port support
324 ****************************************************************************/
325 static int synaptics_pt_write(struct serio *serio, unsigned char c)
326 {
327 struct psmouse *parent = serio_get_drvdata(serio->parent);
328 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
329
330 if (psmouse_sliced_command(parent, c))
331 return -1;
332 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
333 return -1;
334 return 0;
335 }
336
337 static int synaptics_pt_start(struct serio *serio)
338 {
339 struct psmouse *parent = serio_get_drvdata(serio->parent);
340 struct synaptics_data *priv = parent->private;
341
342 serio_pause_rx(parent->ps2dev.serio);
343 priv->pt_port = serio;
344 serio_continue_rx(parent->ps2dev.serio);
345
346 return 0;
347 }
348
349 static void synaptics_pt_stop(struct serio *serio)
350 {
351 struct psmouse *parent = serio_get_drvdata(serio->parent);
352 struct synaptics_data *priv = parent->private;
353
354 serio_pause_rx(parent->ps2dev.serio);
355 priv->pt_port = NULL;
356 serio_continue_rx(parent->ps2dev.serio);
357 }
358
359 static int synaptics_is_pt_packet(unsigned char *buf)
360 {
361 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
362 }
363
364 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
365 {
366 struct psmouse *child = serio_get_drvdata(ptport);
367
368 if (child && child->state == PSMOUSE_ACTIVATED) {
369 serio_interrupt(ptport, packet[1], 0);
370 serio_interrupt(ptport, packet[4], 0);
371 serio_interrupt(ptport, packet[5], 0);
372 if (child->pktsize == 4)
373 serio_interrupt(ptport, packet[2], 0);
374 } else
375 serio_interrupt(ptport, packet[1], 0);
376 }
377
378 static void synaptics_pt_activate(struct psmouse *psmouse)
379 {
380 struct synaptics_data *priv = psmouse->private;
381 struct psmouse *child = serio_get_drvdata(priv->pt_port);
382
383 /* adjust the touchpad to child's choice of protocol */
384 if (child) {
385 if (child->pktsize == 4)
386 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
387 else
388 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
389
390 if (synaptics_mode_cmd(psmouse, priv->mode))
391 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
392 }
393 }
394
395 static void synaptics_pt_create(struct psmouse *psmouse)
396 {
397 struct serio *serio;
398
399 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
400 if (!serio) {
401 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
402 return;
403 }
404
405 serio->id.type = SERIO_PS_PSTHRU;
406 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
407 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
408 serio->write = synaptics_pt_write;
409 serio->start = synaptics_pt_start;
410 serio->stop = synaptics_pt_stop;
411 serio->parent = psmouse->ps2dev.serio;
412
413 psmouse->pt_activate = synaptics_pt_activate;
414
415 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
416 serio_register_port(serio);
417 }
418
419 /*****************************************************************************
420 * Functions to interpret the absolute mode packets
421 ****************************************************************************/
422
423 static void synaptics_parse_agm(const unsigned char buf[],
424 struct synaptics_data *priv)
425 {
426 struct synaptics_hw_state *agm = &priv->agm;
427
428 /* Gesture packet: (x, y, z) at half resolution */
429 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
430 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
431 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
432 }
433
434 static int synaptics_parse_hw_state(const unsigned char buf[],
435 struct synaptics_data *priv,
436 struct synaptics_hw_state *hw)
437 {
438 memset(hw, 0, sizeof(struct synaptics_hw_state));
439
440 if (SYN_MODEL_NEWABS(priv->model_id)) {
441 hw->w = (((buf[0] & 0x30) >> 2) |
442 ((buf[0] & 0x04) >> 1) |
443 ((buf[3] & 0x04) >> 2));
444
445 hw->left = (buf[0] & 0x01) ? 1 : 0;
446 hw->right = (buf[0] & 0x02) ? 1 : 0;
447
448 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
449 /*
450 * Clickpad's button is transmitted as middle button,
451 * however, since it is primary button, we will report
452 * it as BTN_LEFT.
453 */
454 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
455
456 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
457 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
458 if (hw->w == 2)
459 hw->scroll = (signed char)(buf[1]);
460 }
461
462 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
463 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
464 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
465 }
466
467 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
468 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
469 hw->w == 2) {
470 synaptics_parse_agm(buf, priv);
471 return 1;
472 }
473
474 hw->x = (((buf[3] & 0x10) << 8) |
475 ((buf[1] & 0x0f) << 8) |
476 buf[4]);
477 hw->y = (((buf[3] & 0x20) << 7) |
478 ((buf[1] & 0xf0) << 4) |
479 buf[5]);
480 hw->z = buf[2];
481
482 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
483 ((buf[0] ^ buf[3]) & 0x02)) {
484 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
485 default:
486 /*
487 * if nExtBtn is greater than 8 it should be
488 * considered invalid and treated as 0
489 */
490 break;
491 case 8:
492 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
493 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
494 case 6:
495 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
496 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
497 case 4:
498 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
499 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
500 case 2:
501 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
502 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
503 }
504 }
505 } else {
506 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
507 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
508
509 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
510 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
511
512 hw->left = (buf[0] & 0x01) ? 1 : 0;
513 hw->right = (buf[0] & 0x02) ? 1 : 0;
514 }
515
516 return 0;
517 }
518
519 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
520 bool active, int x, int y)
521 {
522 input_mt_slot(dev, slot);
523 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
524 if (active) {
525 input_report_abs(dev, ABS_MT_POSITION_X, x);
526 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
527 }
528 }
529
530 static void synaptics_report_semi_mt_data(struct input_dev *dev,
531 const struct synaptics_hw_state *a,
532 const struct synaptics_hw_state *b,
533 int num_fingers)
534 {
535 if (num_fingers >= 2) {
536 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
537 min(a->y, b->y));
538 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
539 max(a->y, b->y));
540 } else if (num_fingers == 1) {
541 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
542 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
543 } else {
544 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
545 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
546 }
547 }
548
549 static void synaptics_report_buttons(struct psmouse *psmouse,
550 const struct synaptics_hw_state *hw)
551 {
552 struct input_dev *dev = psmouse->dev;
553 struct synaptics_data *priv = psmouse->private;
554 int i;
555
556 input_report_key(dev, BTN_LEFT, hw->left);
557 input_report_key(dev, BTN_RIGHT, hw->right);
558
559 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
560 input_report_key(dev, BTN_MIDDLE, hw->middle);
561
562 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
563 input_report_key(dev, BTN_FORWARD, hw->up);
564 input_report_key(dev, BTN_BACK, hw->down);
565 }
566
567 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
568 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
569 }
570
571 static void synaptics_report_slot(struct input_dev *dev, int slot,
572 const struct synaptics_hw_state *hw)
573 {
574 input_mt_slot(dev, slot);
575 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
576 if (!hw)
577 return;
578
579 input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
580 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
581 input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
582 }
583
584 static void synaptics_report_mt_data(struct psmouse *psmouse,
585 int count,
586 const struct synaptics_hw_state *sgm)
587 {
588 struct input_dev *dev = psmouse->dev;
589 struct synaptics_data *priv = psmouse->private;
590 struct synaptics_hw_state *agm = &priv->agm;
591
592 switch (count) {
593 case 0:
594 synaptics_report_slot(dev, 0, NULL);
595 synaptics_report_slot(dev, 1, NULL);
596 break;
597 case 1:
598 synaptics_report_slot(dev, 0, sgm);
599 synaptics_report_slot(dev, 1, NULL);
600 break;
601 case 2:
602 case 3: /* Fall-through case */
603 synaptics_report_slot(dev, 0, sgm);
604 synaptics_report_slot(dev, 1, agm);
605 break;
606 }
607
608 /* Don't use active slot count to generate BTN_TOOL events. */
609 input_mt_report_pointer_emulation(dev, false);
610
611 /* Send the number of fingers reported by touchpad itself. */
612 input_mt_report_finger_count(dev, count);
613
614 synaptics_report_buttons(psmouse, sgm);
615
616 input_sync(dev);
617 }
618
619 static void synaptics_image_sensor_process(struct psmouse *psmouse,
620 struct synaptics_hw_state *sgm)
621 {
622 int count;
623
624 if (sgm->z == 0)
625 count = 0;
626 else if (sgm->w >= 4)
627 count = 1;
628 else if (sgm->w == 0)
629 count = 2;
630 else
631 count = 3;
632
633 /* Send resulting input events to user space */
634 synaptics_report_mt_data(psmouse, count, sgm);
635 }
636
637 /*
638 * called for each full received packet from the touchpad
639 */
640 static void synaptics_process_packet(struct psmouse *psmouse)
641 {
642 struct input_dev *dev = psmouse->dev;
643 struct synaptics_data *priv = psmouse->private;
644 struct synaptics_hw_state hw;
645 int num_fingers;
646 int finger_width;
647
648 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
649 return;
650
651 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
652 synaptics_image_sensor_process(psmouse, &hw);
653 return;
654 }
655
656 if (hw.scroll) {
657 priv->scroll += hw.scroll;
658
659 while (priv->scroll >= 4) {
660 input_report_key(dev, BTN_BACK, !hw.down);
661 input_sync(dev);
662 input_report_key(dev, BTN_BACK, hw.down);
663 input_sync(dev);
664 priv->scroll -= 4;
665 }
666 while (priv->scroll <= -4) {
667 input_report_key(dev, BTN_FORWARD, !hw.up);
668 input_sync(dev);
669 input_report_key(dev, BTN_FORWARD, hw.up);
670 input_sync(dev);
671 priv->scroll += 4;
672 }
673 return;
674 }
675
676 if (hw.z > 0 && hw.x > 1) {
677 num_fingers = 1;
678 finger_width = 5;
679 if (SYN_CAP_EXTENDED(priv->capabilities)) {
680 switch (hw.w) {
681 case 0 ... 1:
682 if (SYN_CAP_MULTIFINGER(priv->capabilities))
683 num_fingers = hw.w + 2;
684 break;
685 case 2:
686 if (SYN_MODEL_PEN(priv->model_id))
687 ; /* Nothing, treat a pen as a single finger */
688 break;
689 case 4 ... 15:
690 if (SYN_CAP_PALMDETECT(priv->capabilities))
691 finger_width = hw.w;
692 break;
693 }
694 }
695 } else {
696 num_fingers = 0;
697 finger_width = 0;
698 }
699
700 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
701 synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
702 num_fingers);
703
704 /* Post events
705 * BTN_TOUCH has to be first as mousedev relies on it when doing
706 * absolute -> relative conversion
707 */
708 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
709 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
710
711 if (num_fingers > 0) {
712 input_report_abs(dev, ABS_X, hw.x);
713 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
714 }
715 input_report_abs(dev, ABS_PRESSURE, hw.z);
716
717 if (SYN_CAP_PALMDETECT(priv->capabilities))
718 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
719
720 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
721 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
722 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
723 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
724 }
725
726 synaptics_report_buttons(psmouse, &hw);
727
728 input_sync(dev);
729 }
730
731 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
732 {
733 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
734 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
735 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
736 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
737 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
738
739 if (idx < 0 || idx > 4)
740 return 0;
741
742 switch (pkt_type) {
743
744 case SYN_NEWABS:
745 case SYN_NEWABS_RELAXED:
746 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
747
748 case SYN_NEWABS_STRICT:
749 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
750
751 case SYN_OLDABS:
752 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
753
754 default:
755 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
756 return 0;
757 }
758 }
759
760 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
761 {
762 int i;
763
764 for (i = 0; i < 5; i++)
765 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
766 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
767 return SYN_NEWABS_RELAXED;
768 }
769
770 return SYN_NEWABS_STRICT;
771 }
772
773 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
774 {
775 struct synaptics_data *priv = psmouse->private;
776
777 if (psmouse->pktcnt >= 6) { /* Full packet received */
778 if (unlikely(priv->pkt_type == SYN_NEWABS))
779 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
780
781 if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
782 synaptics_is_pt_packet(psmouse->packet)) {
783 if (priv->pt_port)
784 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
785 } else
786 synaptics_process_packet(psmouse);
787
788 return PSMOUSE_FULL_PACKET;
789 }
790
791 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
792 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
793 }
794
795 /*****************************************************************************
796 * Driver initialization/cleanup functions
797 ****************************************************************************/
798 static void set_abs_position_params(struct input_dev *dev,
799 struct synaptics_data *priv, int x_code,
800 int y_code)
801 {
802 int x_min = priv->x_min ?: XMIN_NOMINAL;
803 int x_max = priv->x_max ?: XMAX_NOMINAL;
804 int y_min = priv->y_min ?: YMIN_NOMINAL;
805 int y_max = priv->y_max ?: YMAX_NOMINAL;
806 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
807 SYN_REDUCED_FILTER_FUZZ : 0;
808
809 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
810 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
811 input_abs_set_res(dev, x_code, priv->x_res);
812 input_abs_set_res(dev, y_code, priv->y_res);
813 }
814
815 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
816 {
817 int i;
818
819 __set_bit(INPUT_PROP_POINTER, dev->propbit);
820
821 __set_bit(EV_ABS, dev->evbit);
822 set_abs_position_params(dev, priv, ABS_X, ABS_Y);
823 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
824
825 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
826 input_mt_init_slots(dev, 2);
827 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
828 ABS_MT_POSITION_Y);
829 /* Image sensors can report per-contact pressure */
830 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
831 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
832 /* Non-image sensors with AGM use semi-mt */
833 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
834 input_mt_init_slots(dev, 2);
835 set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
836 ABS_MT_POSITION_Y);
837 }
838
839 if (SYN_CAP_PALMDETECT(priv->capabilities))
840 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
841
842 __set_bit(EV_KEY, dev->evbit);
843 __set_bit(BTN_TOUCH, dev->keybit);
844 __set_bit(BTN_TOOL_FINGER, dev->keybit);
845 __set_bit(BTN_LEFT, dev->keybit);
846 __set_bit(BTN_RIGHT, dev->keybit);
847
848 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
849 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
850 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
851 }
852
853 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
854 __set_bit(BTN_MIDDLE, dev->keybit);
855
856 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
857 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
858 __set_bit(BTN_FORWARD, dev->keybit);
859 __set_bit(BTN_BACK, dev->keybit);
860 }
861
862 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
863 __set_bit(BTN_0 + i, dev->keybit);
864
865 __clear_bit(EV_REL, dev->evbit);
866 __clear_bit(REL_X, dev->relbit);
867 __clear_bit(REL_Y, dev->relbit);
868
869 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
870 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
871 /* Clickpads report only left button */
872 __clear_bit(BTN_RIGHT, dev->keybit);
873 __clear_bit(BTN_MIDDLE, dev->keybit);
874 }
875 }
876
877 static void synaptics_disconnect(struct psmouse *psmouse)
878 {
879 synaptics_reset(psmouse);
880 kfree(psmouse->private);
881 psmouse->private = NULL;
882 }
883
884 static int synaptics_reconnect(struct psmouse *psmouse)
885 {
886 struct synaptics_data *priv = psmouse->private;
887 struct synaptics_data old_priv = *priv;
888 int retry = 0;
889 int error;
890
891 do {
892 psmouse_reset(psmouse);
893 error = synaptics_detect(psmouse, 0);
894 } while (error && ++retry < 3);
895
896 if (error)
897 return -1;
898
899 if (retry > 1)
900 printk(KERN_DEBUG "Synaptics reconnected after %d tries\n",
901 retry);
902
903 if (synaptics_query_hardware(psmouse)) {
904 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
905 return -1;
906 }
907
908 if (synaptics_set_absolute_mode(psmouse)) {
909 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
910 return -1;
911 }
912
913 if (synaptics_set_advanced_gesture_mode(psmouse)) {
914 printk(KERN_ERR "Advanced gesture mode reconnect failed.\n");
915 return -1;
916 }
917
918 if (old_priv.identity != priv->identity ||
919 old_priv.model_id != priv->model_id ||
920 old_priv.capabilities != priv->capabilities ||
921 old_priv.ext_cap != priv->ext_cap) {
922 printk(KERN_ERR "Synaptics hardware appears to be different: "
923 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
924 old_priv.identity, priv->identity,
925 old_priv.model_id, priv->model_id,
926 old_priv.capabilities, priv->capabilities,
927 old_priv.ext_cap, priv->ext_cap);
928 return -1;
929 }
930
931 return 0;
932 }
933
934 static bool impaired_toshiba_kbc;
935
936 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
937 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
938 {
939 /* Toshiba Satellite */
940 .matches = {
941 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
942 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
943 },
944 },
945 {
946 /* Toshiba Dynabook */
947 .matches = {
948 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
949 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
950 },
951 },
952 {
953 /* Toshiba Portege M300 */
954 .matches = {
955 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
956 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
957 },
958
959 },
960 {
961 /* Toshiba Portege M300 */
962 .matches = {
963 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
964 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
965 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
966 },
967
968 },
969 #endif
970 { }
971 };
972
973 static bool broken_olpc_ec;
974
975 static const struct dmi_system_id __initconst olpc_dmi_table[] = {
976 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
977 {
978 /* OLPC XO-1 or XO-1.5 */
979 .matches = {
980 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
981 DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
982 },
983 },
984 #endif
985 { }
986 };
987
988 void __init synaptics_module_init(void)
989 {
990 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
991 broken_olpc_ec = dmi_check_system(olpc_dmi_table);
992 }
993
994 int synaptics_init(struct psmouse *psmouse)
995 {
996 struct synaptics_data *priv;
997
998 /*
999 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
1000 * the HGPK, it quickly degrades and the hardware becomes jumpy and
1001 * overly sensitive. Not only that, but the constant packet spew
1002 * (even at a lowered 40pps rate) overloads the EC such that key
1003 * presses on the keyboard are missed. Given all of that, don't
1004 * even attempt to use Synaptics mode. Relative mode seems to work
1005 * just fine.
1006 */
1007 if (broken_olpc_ec) {
1008 printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
1009 return -ENODEV;
1010 }
1011
1012 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1013 if (!priv)
1014 return -ENOMEM;
1015
1016 psmouse_reset(psmouse);
1017
1018 if (synaptics_query_hardware(psmouse)) {
1019 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
1020 goto init_fail;
1021 }
1022
1023 if (synaptics_set_absolute_mode(psmouse)) {
1024 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
1025 goto init_fail;
1026 }
1027
1028 if (synaptics_set_advanced_gesture_mode(psmouse)) {
1029 printk(KERN_ERR "Advanced gesture mode init failed.\n");
1030 goto init_fail;
1031 }
1032
1033 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
1034
1035 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
1036 SYN_ID_MODEL(priv->identity),
1037 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
1038 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
1039
1040 set_input_params(psmouse->dev, priv);
1041
1042 /*
1043 * Encode touchpad model so that it can be used to set
1044 * input device->id.version and be visible to userspace.
1045 * Because version is __u16 we have to drop something.
1046 * Hardware info bits seem to be good candidates as they
1047 * are documented to be for Synaptics corp. internal use.
1048 */
1049 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
1050 (priv->model_id & 0x000000ff);
1051
1052 psmouse->protocol_handler = synaptics_process_byte;
1053 psmouse->set_rate = synaptics_set_rate;
1054 psmouse->disconnect = synaptics_disconnect;
1055 psmouse->reconnect = synaptics_reconnect;
1056 psmouse->cleanup = synaptics_reset;
1057 psmouse->pktsize = 6;
1058 /* Synaptics can usually stay in sync without extra help */
1059 psmouse->resync_time = 0;
1060
1061 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
1062 synaptics_pt_create(psmouse);
1063
1064 /*
1065 * Toshiba's KBC seems to have trouble handling data from
1066 * Synaptics at full rate. Switch to a lower rate (roughly
1067 * the same rate as a standard PS/2 mouse).
1068 */
1069 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
1070 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
1071 dmi_get_system_info(DMI_PRODUCT_NAME));
1072 psmouse->rate = 40;
1073 }
1074
1075 return 0;
1076
1077 init_fail:
1078 kfree(priv);
1079 return -1;
1080 }
1081
1082 bool synaptics_supported(void)
1083 {
1084 return true;
1085 }
1086
1087 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
1088
1089 void __init synaptics_module_init(void)
1090 {
1091 }
1092
1093 int synaptics_init(struct psmouse *psmouse)
1094 {
1095 return -ENOSYS;
1096 }
1097
1098 bool synaptics_supported(void)
1099 {
1100 return false;
1101 }
1102
1103 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
Linux kernel - Deliverables
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