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Linux v2.6.13
[linux-2.6/next.git] / drivers / input / mouse / synaptics.c
blob0293094224098b1b2aa46c71609fddad1b0239f3
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/input.h>
28 #include <linux/serio.h>
29 #include <linux/libps2.h>
30 #include "psmouse.h"
31 #include "synaptics.h"
32
33 /*
34 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
35 * section 2.3.2, which says that they should be valid regardless of the
36 * actual size of the sensor.
37 */
38 #define XMIN_NOMINAL 1472
39 #define XMAX_NOMINAL 5472
40 #define YMIN_NOMINAL 1408
41 #define YMAX_NOMINAL 4448
42
43 /*****************************************************************************
44 * Synaptics communications functions
45 ****************************************************************************/
46
47 /*
48 * Send a command to the synpatics touchpad by special commands
49 */
50 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
51 {
52 if (psmouse_sliced_command(psmouse, c))
53 return -1;
54 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
55 return -1;
56 return 0;
57 }
58
59 /*
60 * Set the synaptics touchpad mode byte by special commands
61 */
62 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
63 {
64 unsigned char param[1];
65
66 if (psmouse_sliced_command(psmouse, mode))
67 return -1;
68 param[0] = SYN_PS_SET_MODE2;
69 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
70 return -1;
71 return 0;
72 }
73
74 /*
75 * Read the model-id bytes from the touchpad
76 * see also SYN_MODEL_* macros
77 */
78 static int synaptics_model_id(struct psmouse *psmouse)
79 {
80 struct synaptics_data *priv = psmouse->private;
81 unsigned char mi[3];
82
83 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
84 return -1;
85 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
86 return 0;
87 }
88
89 /*
90 * Read the capability-bits from the touchpad
91 * see also the SYN_CAP_* macros
92 */
93 static int synaptics_capability(struct psmouse *psmouse)
94 {
95 struct synaptics_data *priv = psmouse->private;
96 unsigned char cap[3];
97
98 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
99 return -1;
100 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
101 priv->ext_cap = 0;
102 if (!SYN_CAP_VALID(priv->capabilities))
103 return -1;
104
105 /*
106 * Unless capExtended is set the rest of the flags should be ignored
107 */
108 if (!SYN_CAP_EXTENDED(priv->capabilities))
109 priv->capabilities = 0;
110
111 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
112 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
113 printk(KERN_ERR "Synaptics claims to have extended capabilities,"
114 " but I'm not able to read them.");
115 } else {
116 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
117
118 /*
119 * if nExtBtn is greater than 8 it should be considered
120 * invalid and treated as 0
121 */
122 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
123 priv->ext_cap &= 0xff0fff;
124 }
125 }
126 return 0;
127 }
128
129 /*
130 * Identify Touchpad
131 * See also the SYN_ID_* macros
132 */
133 static int synaptics_identify(struct psmouse *psmouse)
134 {
135 struct synaptics_data *priv = psmouse->private;
136 unsigned char id[3];
137
138 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
139 return -1;
140 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
141 if (SYN_ID_IS_SYNAPTICS(priv->identity))
142 return 0;
143 return -1;
144 }
145
146 static int synaptics_query_hardware(struct psmouse *psmouse)
147 {
148 int retries = 0;
149
150 while ((retries++ < 3) && psmouse_reset(psmouse))
151 printk(KERN_ERR "synaptics reset failed\n");
152
153 if (synaptics_identify(psmouse))
154 return -1;
155 if (synaptics_model_id(psmouse))
156 return -1;
157 if (synaptics_capability(psmouse))
158 return -1;
159
160 return 0;
161 }
162
163 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
164 {
165 struct synaptics_data *priv = psmouse->private;
166
167 priv->mode = SYN_BIT_ABSOLUTE_MODE;
168 if (SYN_ID_MAJOR(priv->identity) >= 4)
169 priv->mode |= SYN_BIT_DISABLE_GESTURE;
170 if (SYN_CAP_EXTENDED(priv->capabilities))
171 priv->mode |= SYN_BIT_W_MODE;
172
173 if (synaptics_mode_cmd(psmouse, priv->mode))
174 return -1;
175
176 return 0;
177 }
178
179 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
180 {
181 struct synaptics_data *priv = psmouse->private;
182
183 if (rate >= 80) {
184 priv->mode |= SYN_BIT_HIGH_RATE;
185 psmouse->rate = 80;
186 } else {
187 priv->mode &= ~SYN_BIT_HIGH_RATE;
188 psmouse->rate = 40;
189 }
190
191 synaptics_mode_cmd(psmouse, priv->mode);
192 }
193
194 /*****************************************************************************
195 * Synaptics pass-through PS/2 port support
196 ****************************************************************************/
197 static int synaptics_pt_write(struct serio *serio, unsigned char c)
198 {
199 struct psmouse *parent = serio_get_drvdata(serio->parent);
200 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
201
202 if (psmouse_sliced_command(parent, c))
203 return -1;
204 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
205 return -1;
206 return 0;
207 }
208
209 static inline int synaptics_is_pt_packet(unsigned char *buf)
210 {
211 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
212 }
213
214 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
215 {
216 struct psmouse *child = serio_get_drvdata(ptport);
217
218 if (child && child->state == PSMOUSE_ACTIVATED) {
219 serio_interrupt(ptport, packet[1], 0, NULL);
220 serio_interrupt(ptport, packet[4], 0, NULL);
221 serio_interrupt(ptport, packet[5], 0, NULL);
222 if (child->pktsize == 4)
223 serio_interrupt(ptport, packet[2], 0, NULL);
224 } else
225 serio_interrupt(ptport, packet[1], 0, NULL);
226 }
227
228 static void synaptics_pt_activate(struct psmouse *psmouse)
229 {
230 struct serio *ptport = psmouse->ps2dev.serio->child;
231 struct psmouse *child = serio_get_drvdata(ptport);
232 struct synaptics_data *priv = psmouse->private;
233
234 /* adjust the touchpad to child's choice of protocol */
235 if (child) {
236 if (child->pktsize == 4)
237 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
238 else
239 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
240
241 if (synaptics_mode_cmd(psmouse, priv->mode))
242 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
243 }
244 }
245
246 static void synaptics_pt_create(struct psmouse *psmouse)
247 {
248 struct serio *serio;
249
250 serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
251 if (!serio) {
252 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
253 return;
254 }
255
256 memset(serio, 0, sizeof(struct serio));
257
258 serio->id.type = SERIO_PS_PSTHRU;
259 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
260 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
261 serio->write = synaptics_pt_write;
262 serio->parent = psmouse->ps2dev.serio;
263
264 psmouse->pt_activate = synaptics_pt_activate;
265
266 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
267 serio_register_port(serio);
268 }
269
270 /*****************************************************************************
271 * Functions to interpret the absolute mode packets
272 ****************************************************************************/
273
274 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
275 {
276 memset(hw, 0, sizeof(struct synaptics_hw_state));
277
278 if (SYN_MODEL_NEWABS(priv->model_id)) {
279 hw->x = (((buf[3] & 0x10) << 8) |
280 ((buf[1] & 0x0f) << 8) |
281 buf[4]);
282 hw->y = (((buf[3] & 0x20) << 7) |
283 ((buf[1] & 0xf0) << 4) |
284 buf[5]);
285
286 hw->z = buf[2];
287 hw->w = (((buf[0] & 0x30) >> 2) |
288 ((buf[0] & 0x04) >> 1) |
289 ((buf[3] & 0x04) >> 2));
290
291 hw->left = (buf[0] & 0x01) ? 1 : 0;
292 hw->right = (buf[0] & 0x02) ? 1 : 0;
293
294 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
295 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
296 if (hw->w == 2)
297 hw->scroll = (signed char)(buf[1]);
298 }
299
300 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
301 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
302 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
303 }
304
305 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
306 ((buf[0] ^ buf[3]) & 0x02)) {
307 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
308 default:
309 /*
310 * if nExtBtn is greater than 8 it should be
311 * considered invalid and treated as 0
312 */
313 break;
314 case 8:
315 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
316 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
317 case 6:
318 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
319 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
320 case 4:
321 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
322 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
323 case 2:
324 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
325 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
326 }
327 }
328 } else {
329 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
330 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
331
332 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
333 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
334
335 hw->left = (buf[0] & 0x01) ? 1 : 0;
336 hw->right = (buf[0] & 0x02) ? 1 : 0;
337 }
338 }
339
340 /*
341 * called for each full received packet from the touchpad
342 */
343 static void synaptics_process_packet(struct psmouse *psmouse)
344 {
345 struct input_dev *dev = &psmouse->dev;
346 struct synaptics_data *priv = psmouse->private;
347 struct synaptics_hw_state hw;
348 int num_fingers;
349 int finger_width;
350 int i;
351
352 synaptics_parse_hw_state(psmouse->packet, priv, &hw);
353
354 if (hw.scroll) {
355 priv->scroll += hw.scroll;
356
357 while (priv->scroll >= 4) {
358 input_report_key(dev, BTN_BACK, !hw.down);
359 input_sync(dev);
360 input_report_key(dev, BTN_BACK, hw.down);
361 input_sync(dev);
362 priv->scroll -= 4;
363 }
364 while (priv->scroll <= -4) {
365 input_report_key(dev, BTN_FORWARD, !hw.up);
366 input_sync(dev);
367 input_report_key(dev, BTN_FORWARD, hw.up);
368 input_sync(dev);
369 priv->scroll += 4;
370 }
371 return;
372 }
373
374 if (hw.z > 0) {
375 num_fingers = 1;
376 finger_width = 5;
377 if (SYN_CAP_EXTENDED(priv->capabilities)) {
378 switch (hw.w) {
379 case 0 ... 1:
380 if (SYN_CAP_MULTIFINGER(priv->capabilities))
381 num_fingers = hw.w + 2;
382 break;
383 case 2:
384 if (SYN_MODEL_PEN(priv->model_id))
385 ; /* Nothing, treat a pen as a single finger */
386 break;
387 case 4 ... 15:
388 if (SYN_CAP_PALMDETECT(priv->capabilities))
389 finger_width = hw.w;
390 break;
391 }
392 }
393 } else {
394 num_fingers = 0;
395 finger_width = 0;
396 }
397
398 /* Post events
399 * BTN_TOUCH has to be first as mousedev relies on it when doing
400 * absolute -> relative conversion
401 */
402 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
403 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
404
405 if (hw.z > 0) {
406 input_report_abs(dev, ABS_X, hw.x);
407 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
408 }
409 input_report_abs(dev, ABS_PRESSURE, hw.z);
410
411 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
412 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
413 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
414 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
415
416 input_report_key(dev, BTN_LEFT, hw.left);
417 input_report_key(dev, BTN_RIGHT, hw.right);
418
419 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
420 input_report_key(dev, BTN_MIDDLE, hw.middle);
421
422 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
423 input_report_key(dev, BTN_FORWARD, hw.up);
424 input_report_key(dev, BTN_BACK, hw.down);
425 }
426
427 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
428 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
429
430 input_sync(dev);
431 }
432
433 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
434 {
435 static unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
436 static unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
437 static unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
438 static unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
439 static unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
440
441 if (idx < 0 || idx > 4)
442 return 0;
443
444 switch (pkt_type) {
445 case SYN_NEWABS:
446 case SYN_NEWABS_RELAXED:
447 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
448
449 case SYN_NEWABS_STRICT:
450 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
451
452 case SYN_OLDABS:
453 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
454
455 default:
456 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
457 return 0;
458 }
459 }
460
461 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
462 {
463 int i;
464
465 for (i = 0; i < 5; i++)
466 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
467 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
468 return SYN_NEWABS_RELAXED;
469 }
470
471 return SYN_NEWABS_STRICT;
472 }
473
474 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
475 {
476 struct input_dev *dev = &psmouse->dev;
477 struct synaptics_data *priv = psmouse->private;
478
479 input_regs(dev, regs);
480
481 if (psmouse->pktcnt >= 6) { /* Full packet received */
482 if (unlikely(priv->pkt_type == SYN_NEWABS))
483 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
484
485 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
486 if (psmouse->ps2dev.serio->child)
487 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
488 } else
489 synaptics_process_packet(psmouse);
490
491 return PSMOUSE_FULL_PACKET;
492 }
493
494 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
495 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
496 }
497
498 /*****************************************************************************
499 * Driver initialization/cleanup functions
500 ****************************************************************************/
501 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
502 {
503 int i;
504
505 set_bit(EV_ABS, dev->evbit);
506 input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
507 input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
508 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
509 set_bit(ABS_TOOL_WIDTH, dev->absbit);
510
511 set_bit(EV_KEY, dev->evbit);
512 set_bit(BTN_TOUCH, dev->keybit);
513 set_bit(BTN_TOOL_FINGER, dev->keybit);
514 set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
515 set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
516
517 set_bit(BTN_LEFT, dev->keybit);
518 set_bit(BTN_RIGHT, dev->keybit);
519
520 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
521 set_bit(BTN_MIDDLE, dev->keybit);
522
523 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
524 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
525 set_bit(BTN_FORWARD, dev->keybit);
526 set_bit(BTN_BACK, dev->keybit);
527 }
528
529 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
530 set_bit(BTN_0 + i, dev->keybit);
531
532 clear_bit(EV_REL, dev->evbit);
533 clear_bit(REL_X, dev->relbit);
534 clear_bit(REL_Y, dev->relbit);
535 }
536
537 void synaptics_reset(struct psmouse *psmouse)
538 {
539 /* reset touchpad back to relative mode, gestures enabled */
540 synaptics_mode_cmd(psmouse, 0);
541 }
542
543 static void synaptics_disconnect(struct psmouse *psmouse)
544 {
545 synaptics_reset(psmouse);
546 kfree(psmouse->private);
547 psmouse->private = NULL;
548 }
549
550 static int synaptics_reconnect(struct psmouse *psmouse)
551 {
552 struct synaptics_data *priv = psmouse->private;
553 struct synaptics_data old_priv = *priv;
554
555 if (synaptics_detect(psmouse, 0))
556 return -1;
557
558 if (synaptics_query_hardware(psmouse)) {
559 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
560 return -1;
561 }
562
563 if (old_priv.identity != priv->identity ||
564 old_priv.model_id != priv->model_id ||
565 old_priv.capabilities != priv->capabilities ||
566 old_priv.ext_cap != priv->ext_cap)
567 return -1;
568
569 if (synaptics_set_absolute_mode(psmouse)) {
570 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
571 return -1;
572 }
573
574 return 0;
575 }
576
577 int synaptics_detect(struct psmouse *psmouse, int set_properties)
578 {
579 struct ps2dev *ps2dev = &psmouse->ps2dev;
580 unsigned char param[4];
581
582 param[0] = 0;
583
584 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
585 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
586 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
587 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
588 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
589
590 if (param[1] != 0x47)
591 return -1;
592
593 if (set_properties) {
594 psmouse->vendor = "Synaptics";
595 psmouse->name = "TouchPad";
596 }
597
598 return 0;
599 }
600
601 #if defined(__i386__)
602 #include <linux/dmi.h>
603 static struct dmi_system_id toshiba_dmi_table[] = {
604 {
605 .ident = "Toshiba Satellite",
606 .matches = {
607 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
608 DMI_MATCH(DMI_PRODUCT_NAME , "Satellite"),
609 },
610 },
611 {
612 .ident = "Toshiba Dynabook",
613 .matches = {
614 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
615 DMI_MATCH(DMI_PRODUCT_NAME , "dynabook"),
616 },
617 },
618 { }
619 };
620 #endif
621
622 int synaptics_init(struct psmouse *psmouse)
623 {
624 struct synaptics_data *priv;
625
626 psmouse->private = priv = kmalloc(sizeof(struct synaptics_data), GFP_KERNEL);
627 if (!priv)
628 return -1;
629 memset(priv, 0, sizeof(struct synaptics_data));
630
631 if (synaptics_query_hardware(psmouse)) {
632 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
633 goto init_fail;
634 }
635
636 if (synaptics_set_absolute_mode(psmouse)) {
637 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
638 goto init_fail;
639 }
640
641 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
642
643 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
644 SYN_ID_MODEL(priv->identity),
645 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
646 priv->model_id, priv->capabilities, priv->ext_cap);
647
648 set_input_params(&psmouse->dev, priv);
649
650 psmouse->protocol_handler = synaptics_process_byte;
651 psmouse->set_rate = synaptics_set_rate;
652 psmouse->disconnect = synaptics_disconnect;
653 psmouse->reconnect = synaptics_reconnect;
654 psmouse->pktsize = 6;
655
656 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
657 synaptics_pt_create(psmouse);
658
659 #if defined(__i386__)
660 /*
661 * Toshiba's KBC seems to have trouble handling data from
662 * Synaptics as full rate, switch to lower rate which is roughly
663 * thye same as rate of standard PS/2 mouse.
664 */
665 if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
666 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
667 dmi_get_system_info(DMI_PRODUCT_NAME));
668 psmouse->rate = 40;
669 }
670 #endif
671
672 return 0;
673
674 init_fail:
675 kfree(priv);
676 return -1;
677 }
678
679
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