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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / input / mouse / synaptics.c
blobd3f5243fa093c8ce1152cd17f737250f0002c888
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.h>
29 #include <linux/serio.h>
30 #include <linux/libps2.h>
31 #include "psmouse.h"
32 #include "synaptics.h"
33
34 /*
35 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
36 * section 2.3.2, which says that they should be valid regardless of the
37 * actual size of the sensor.
38 */
39 #define XMIN_NOMINAL 1472
40 #define XMAX_NOMINAL 5472
41 #define YMIN_NOMINAL 1408
42 #define YMAX_NOMINAL 4448
43
44
45 /*****************************************************************************
46 * Stuff we need even when we do not want native Synaptics support
47 ****************************************************************************/
48
49 /*
50 * Set the synaptics touchpad mode byte by special commands
51 */
52 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
53 {
54 unsigned char param[1];
55
56 if (psmouse_sliced_command(psmouse, mode))
57 return -1;
58 param[0] = SYN_PS_SET_MODE2;
59 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
60 return -1;
61 return 0;
62 }
63
64 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
65 {
66 struct ps2dev *ps2dev = &psmouse->ps2dev;
67 unsigned char param[4];
68
69 param[0] = 0;
70
71 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
72 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
73 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
74 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
75 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
76
77 if (param[1] != 0x47)
78 return -ENODEV;
79
80 if (set_properties) {
81 psmouse->vendor = "Synaptics";
82 psmouse->name = "TouchPad";
83 }
84
85 return 0;
86 }
87
88 void synaptics_reset(struct psmouse *psmouse)
89 {
90 /* reset touchpad back to relative mode, gestures enabled */
91 synaptics_mode_cmd(psmouse, 0);
92 }
93
94 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
95
96 /*****************************************************************************
97 * Synaptics communications functions
98 ****************************************************************************/
99
100 /*
101 * Send a command to the synpatics touchpad by special commands
102 */
103 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
104 {
105 if (psmouse_sliced_command(psmouse, c))
106 return -1;
107 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
108 return -1;
109 return 0;
110 }
111
112 /*
113 * Read the model-id bytes from the touchpad
114 * see also SYN_MODEL_* macros
115 */
116 static int synaptics_model_id(struct psmouse *psmouse)
117 {
118 struct synaptics_data *priv = psmouse->private;
119 unsigned char mi[3];
120
121 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
122 return -1;
123 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
124 return 0;
125 }
126
127 /*
128 * Read the capability-bits from the touchpad
129 * see also the SYN_CAP_* macros
130 */
131 static int synaptics_capability(struct psmouse *psmouse)
132 {
133 struct synaptics_data *priv = psmouse->private;
134 unsigned char cap[3];
135
136 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
137 return -1;
138 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
139 priv->ext_cap = 0;
140 if (!SYN_CAP_VALID(priv->capabilities))
141 return -1;
142
143 /*
144 * Unless capExtended is set the rest of the flags should be ignored
145 */
146 if (!SYN_CAP_EXTENDED(priv->capabilities))
147 priv->capabilities = 0;
148
149 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
150 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
151 printk(KERN_ERR "Synaptics claims to have extended capabilities,"
152 " but I'm not able to read them.");
153 } else {
154 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
155
156 /*
157 * if nExtBtn is greater than 8 it should be considered
158 * invalid and treated as 0
159 */
160 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
161 priv->ext_cap &= 0xff0fff;
162 }
163 }
164 return 0;
165 }
166
167 /*
168 * Identify Touchpad
169 * See also the SYN_ID_* macros
170 */
171 static int synaptics_identify(struct psmouse *psmouse)
172 {
173 struct synaptics_data *priv = psmouse->private;
174 unsigned char id[3];
175
176 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
177 return -1;
178 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
179 if (SYN_ID_IS_SYNAPTICS(priv->identity))
180 return 0;
181 return -1;
182 }
183
184 /*
185 * Read touchpad resolution
186 * Resolution is left zero if touchpad does not support the query
187 */
188 static int synaptics_resolution(struct psmouse *psmouse)
189 {
190 struct synaptics_data *priv = psmouse->private;
191 unsigned char res[3];
192
193 if (SYN_ID_MAJOR(priv->identity) < 4)
194 return 0;
195
196 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res))
197 return 0;
198
199 if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) {
200 priv->x_res = res[0]; /* x resolution in units/mm */
201 priv->y_res = res[2]; /* y resolution in units/mm */
202 }
203
204 return 0;
205 }
206
207 static int synaptics_query_hardware(struct psmouse *psmouse)
208 {
209 if (synaptics_identify(psmouse))
210 return -1;
211 if (synaptics_model_id(psmouse))
212 return -1;
213 if (synaptics_capability(psmouse))
214 return -1;
215 if (synaptics_resolution(psmouse))
216 return -1;
217
218 return 0;
219 }
220
221 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
222 {
223 struct synaptics_data *priv = psmouse->private;
224
225 priv->mode = SYN_BIT_ABSOLUTE_MODE;
226 if (SYN_ID_MAJOR(priv->identity) >= 4)
227 priv->mode |= SYN_BIT_DISABLE_GESTURE;
228 if (SYN_CAP_EXTENDED(priv->capabilities))
229 priv->mode |= SYN_BIT_W_MODE;
230
231 if (synaptics_mode_cmd(psmouse, priv->mode))
232 return -1;
233
234 return 0;
235 }
236
237 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
238 {
239 struct synaptics_data *priv = psmouse->private;
240
241 if (rate >= 80) {
242 priv->mode |= SYN_BIT_HIGH_RATE;
243 psmouse->rate = 80;
244 } else {
245 priv->mode &= ~SYN_BIT_HIGH_RATE;
246 psmouse->rate = 40;
247 }
248
249 synaptics_mode_cmd(psmouse, priv->mode);
250 }
251
252 /*****************************************************************************
253 * Synaptics pass-through PS/2 port support
254 ****************************************************************************/
255 static int synaptics_pt_write(struct serio *serio, unsigned char c)
256 {
257 struct psmouse *parent = serio_get_drvdata(serio->parent);
258 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
259
260 if (psmouse_sliced_command(parent, c))
261 return -1;
262 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
263 return -1;
264 return 0;
265 }
266
267 static inline int synaptics_is_pt_packet(unsigned char *buf)
268 {
269 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
270 }
271
272 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
273 {
274 struct psmouse *child = serio_get_drvdata(ptport);
275
276 if (child && child->state == PSMOUSE_ACTIVATED) {
277 serio_interrupt(ptport, packet[1], 0);
278 serio_interrupt(ptport, packet[4], 0);
279 serio_interrupt(ptport, packet[5], 0);
280 if (child->pktsize == 4)
281 serio_interrupt(ptport, packet[2], 0);
282 } else
283 serio_interrupt(ptport, packet[1], 0);
284 }
285
286 static void synaptics_pt_activate(struct psmouse *psmouse)
287 {
288 struct serio *ptport = psmouse->ps2dev.serio->child;
289 struct psmouse *child = serio_get_drvdata(ptport);
290 struct synaptics_data *priv = psmouse->private;
291
292 /* adjust the touchpad to child's choice of protocol */
293 if (child) {
294 if (child->pktsize == 4)
295 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
296 else
297 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
298
299 if (synaptics_mode_cmd(psmouse, priv->mode))
300 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
301 }
302 }
303
304 static void synaptics_pt_create(struct psmouse *psmouse)
305 {
306 struct serio *serio;
307
308 serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
309 if (!serio) {
310 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
311 return;
312 }
313
314 serio->id.type = SERIO_PS_PSTHRU;
315 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
316 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
317 serio->write = synaptics_pt_write;
318 serio->parent = psmouse->ps2dev.serio;
319
320 psmouse->pt_activate = synaptics_pt_activate;
321
322 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
323 serio_register_port(serio);
324 }
325
326 /*****************************************************************************
327 * Functions to interpret the absolute mode packets
328 ****************************************************************************/
329
330 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
331 {
332 memset(hw, 0, sizeof(struct synaptics_hw_state));
333
334 if (SYN_MODEL_NEWABS(priv->model_id)) {
335 hw->x = (((buf[3] & 0x10) << 8) |
336 ((buf[1] & 0x0f) << 8) |
337 buf[4]);
338 hw->y = (((buf[3] & 0x20) << 7) |
339 ((buf[1] & 0xf0) << 4) |
340 buf[5]);
341
342 hw->z = buf[2];
343 hw->w = (((buf[0] & 0x30) >> 2) |
344 ((buf[0] & 0x04) >> 1) |
345 ((buf[3] & 0x04) >> 2));
346
347 hw->left = (buf[0] & 0x01) ? 1 : 0;
348 hw->right = (buf[0] & 0x02) ? 1 : 0;
349
350 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
351 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
352 if (hw->w == 2)
353 hw->scroll = (signed char)(buf[1]);
354 }
355
356 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
357 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
358 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
359 }
360
361 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
362 ((buf[0] ^ buf[3]) & 0x02)) {
363 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
364 default:
365 /*
366 * if nExtBtn is greater than 8 it should be
367 * considered invalid and treated as 0
368 */
369 break;
370 case 8:
371 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
372 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
373 case 6:
374 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
375 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
376 case 4:
377 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
378 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
379 case 2:
380 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
381 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
382 }
383 }
384 } else {
385 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
386 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
387
388 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
389 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
390
391 hw->left = (buf[0] & 0x01) ? 1 : 0;
392 hw->right = (buf[0] & 0x02) ? 1 : 0;
393 }
394 }
395
396 /*
397 * called for each full received packet from the touchpad
398 */
399 static void synaptics_process_packet(struct psmouse *psmouse)
400 {
401 struct input_dev *dev = psmouse->dev;
402 struct synaptics_data *priv = psmouse->private;
403 struct synaptics_hw_state hw;
404 int num_fingers;
405 int finger_width;
406 int i;
407
408 synaptics_parse_hw_state(psmouse->packet, priv, &hw);
409
410 if (hw.scroll) {
411 priv->scroll += hw.scroll;
412
413 while (priv->scroll >= 4) {
414 input_report_key(dev, BTN_BACK, !hw.down);
415 input_sync(dev);
416 input_report_key(dev, BTN_BACK, hw.down);
417 input_sync(dev);
418 priv->scroll -= 4;
419 }
420 while (priv->scroll <= -4) {
421 input_report_key(dev, BTN_FORWARD, !hw.up);
422 input_sync(dev);
423 input_report_key(dev, BTN_FORWARD, hw.up);
424 input_sync(dev);
425 priv->scroll += 4;
426 }
427 return;
428 }
429
430 if (hw.z > 0) {
431 num_fingers = 1;
432 finger_width = 5;
433 if (SYN_CAP_EXTENDED(priv->capabilities)) {
434 switch (hw.w) {
435 case 0 ... 1:
436 if (SYN_CAP_MULTIFINGER(priv->capabilities))
437 num_fingers = hw.w + 2;
438 break;
439 case 2:
440 if (SYN_MODEL_PEN(priv->model_id))
441 ; /* Nothing, treat a pen as a single finger */
442 break;
443 case 4 ... 15:
444 if (SYN_CAP_PALMDETECT(priv->capabilities))
445 finger_width = hw.w;
446 break;
447 }
448 }
449 } else {
450 num_fingers = 0;
451 finger_width = 0;
452 }
453
454 /* Post events
455 * BTN_TOUCH has to be first as mousedev relies on it when doing
456 * absolute -> relative conversion
457 */
458 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
459 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
460
461 if (hw.z > 0) {
462 input_report_abs(dev, ABS_X, hw.x);
463 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
464 }
465 input_report_abs(dev, ABS_PRESSURE, hw.z);
466
467 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
468 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
469 input_report_key(dev, BTN_LEFT, hw.left);
470 input_report_key(dev, BTN_RIGHT, hw.right);
471
472 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
473 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
474 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
475 }
476
477 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
478 input_report_key(dev, BTN_MIDDLE, hw.middle);
479
480 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
481 input_report_key(dev, BTN_FORWARD, hw.up);
482 input_report_key(dev, BTN_BACK, hw.down);
483 }
484
485 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
486 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
487
488 input_sync(dev);
489 }
490
491 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
492 {
493 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
494 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
495 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
496 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
497 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
498
499 if (idx < 0 || idx > 4)
500 return 0;
501
502 switch (pkt_type) {
503 case SYN_NEWABS:
504 case SYN_NEWABS_RELAXED:
505 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
506
507 case SYN_NEWABS_STRICT:
508 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
509
510 case SYN_OLDABS:
511 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
512
513 default:
514 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
515 return 0;
516 }
517 }
518
519 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
520 {
521 int i;
522
523 for (i = 0; i < 5; i++)
524 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
525 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
526 return SYN_NEWABS_RELAXED;
527 }
528
529 return SYN_NEWABS_STRICT;
530 }
531
532 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
533 {
534 struct synaptics_data *priv = psmouse->private;
535
536 if (psmouse->pktcnt >= 6) { /* Full packet received */
537 if (unlikely(priv->pkt_type == SYN_NEWABS))
538 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
539
540 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
541 if (psmouse->ps2dev.serio->child)
542 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
543 } else
544 synaptics_process_packet(psmouse);
545
546 return PSMOUSE_FULL_PACKET;
547 }
548
549 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
550 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
551 }
552
553 /*****************************************************************************
554 * Driver initialization/cleanup functions
555 ****************************************************************************/
556 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
557 {
558 int i;
559
560 __set_bit(EV_ABS, dev->evbit);
561 input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
562 input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
563 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
564 __set_bit(ABS_TOOL_WIDTH, dev->absbit);
565
566 __set_bit(EV_KEY, dev->evbit);
567 __set_bit(BTN_TOUCH, dev->keybit);
568 __set_bit(BTN_TOOL_FINGER, dev->keybit);
569 __set_bit(BTN_LEFT, dev->keybit);
570 __set_bit(BTN_RIGHT, dev->keybit);
571
572 if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
573 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
574 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
575 }
576
577 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
578 __set_bit(BTN_MIDDLE, dev->keybit);
579
580 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
581 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
582 __set_bit(BTN_FORWARD, dev->keybit);
583 __set_bit(BTN_BACK, dev->keybit);
584 }
585
586 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
587 __set_bit(BTN_0 + i, dev->keybit);
588
589 __clear_bit(EV_REL, dev->evbit);
590 __clear_bit(REL_X, dev->relbit);
591 __clear_bit(REL_Y, dev->relbit);
592
593 dev->absres[ABS_X] = priv->x_res;
594 dev->absres[ABS_Y] = priv->y_res;
595 }
596
597 static void synaptics_disconnect(struct psmouse *psmouse)
598 {
599 synaptics_reset(psmouse);
600 kfree(psmouse->private);
601 psmouse->private = NULL;
602 }
603
604 static int synaptics_reconnect(struct psmouse *psmouse)
605 {
606 struct synaptics_data *priv = psmouse->private;
607 struct synaptics_data old_priv = *priv;
608
609 psmouse_reset(psmouse);
610
611 if (synaptics_detect(psmouse, 0))
612 return -1;
613
614 if (synaptics_query_hardware(psmouse)) {
615 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
616 return -1;
617 }
618
619 if (old_priv.identity != priv->identity ||
620 old_priv.model_id != priv->model_id ||
621 old_priv.capabilities != priv->capabilities ||
622 old_priv.ext_cap != priv->ext_cap)
623 return -1;
624
625 if (synaptics_set_absolute_mode(psmouse)) {
626 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
627 return -1;
628 }
629
630 return 0;
631 }
632
633 static bool impaired_toshiba_kbc;
634
635 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
636 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
637 {
638 /* Toshiba Satellite */
639 .matches = {
640 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
641 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
642 },
643 },
644 {
645 /* Toshiba Dynabook */
646 .matches = {
647 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
648 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
649 },
650 },
651 {
652 /* Toshiba Portege M300 */
653 .matches = {
654 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
655 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
656 },
657
658 },
659 {
660 /* Toshiba Portege M300 */
661 .matches = {
662 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
663 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
664 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
665 },
666
667 },
668 { }
669 #endif
670 };
671
672 void __init synaptics_module_init(void)
673 {
674 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
675 }
676
677 int synaptics_init(struct psmouse *psmouse)
678 {
679 struct synaptics_data *priv;
680
681 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
682 if (!priv)
683 return -1;
684
685 psmouse_reset(psmouse);
686
687 if (synaptics_query_hardware(psmouse)) {
688 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
689 goto init_fail;
690 }
691
692 if (synaptics_set_absolute_mode(psmouse)) {
693 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
694 goto init_fail;
695 }
696
697 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
698
699 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
700 SYN_ID_MODEL(priv->identity),
701 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
702 priv->model_id, priv->capabilities, priv->ext_cap);
703
704 set_input_params(psmouse->dev, priv);
705
706 /*
707 * Encode touchpad model so that it can be used to set
708 * input device->id.version and be visible to userspace.
709 * Because version is __u16 we have to drop something.
710 * Hardware info bits seem to be good candidates as they
711 * are documented to be for Synaptics corp. internal use.
712 */
713 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
714 (priv->model_id & 0x000000ff);
715
716 psmouse->protocol_handler = synaptics_process_byte;
717 psmouse->set_rate = synaptics_set_rate;
718 psmouse->disconnect = synaptics_disconnect;
719 psmouse->reconnect = synaptics_reconnect;
720 psmouse->cleanup = synaptics_reset;
721 psmouse->pktsize = 6;
722 /* Synaptics can usually stay in sync without extra help */
723 psmouse->resync_time = 0;
724
725 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
726 synaptics_pt_create(psmouse);
727
728 /*
729 * Toshiba's KBC seems to have trouble handling data from
730 * Synaptics as full rate, switch to lower rate which is roughly
731 * thye same as rate of standard PS/2 mouse.
732 */
733 if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
734 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
735 dmi_get_system_info(DMI_PRODUCT_NAME));
736 psmouse->rate = 40;
737 }
738
739 return 0;
740
741 init_fail:
742 kfree(priv);
743 return -1;
744 }
745
746 bool synaptics_supported(void)
747 {
748 return true;
749 }
750
751 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
752
753 void __init synaptics_module_init(void)
754 {
755 }
756
757 int synaptics_init(struct psmouse *psmouse)
758 {
759 return -ENOSYS;
760 }
761
762 bool synaptics_supported(void)
763 {
764 return false;
765 }
766
767 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
768