d27d52c3c6560af2b5b5531eb76b4a400c536ac5
[linux-2.6.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/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 = kzalloc(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         serio->id.type = SERIO_PS_PSTHRU;
257         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
258         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
259         serio->write = synaptics_pt_write;
260         serio->parent = psmouse->ps2dev.serio;
261
262         psmouse->pt_activate = synaptics_pt_activate;
263
264         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
265         serio_register_port(serio);
266 }
267
268 /*****************************************************************************
269  *      Functions to interpret the absolute mode packets
270  ****************************************************************************/
271
272 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
273 {
274         memset(hw, 0, sizeof(struct synaptics_hw_state));
275
276         if (SYN_MODEL_NEWABS(priv->model_id)) {
277                 hw->x = (((buf[3] & 0x10) << 8) |
278                          ((buf[1] & 0x0f) << 8) |
279                          buf[4]);
280                 hw->y = (((buf[3] & 0x20) << 7) |
281                          ((buf[1] & 0xf0) << 4) |
282                          buf[5]);
283
284                 hw->z = buf[2];
285                 hw->w = (((buf[0] & 0x30) >> 2) |
286                          ((buf[0] & 0x04) >> 1) |
287                          ((buf[3] & 0x04) >> 2));
288
289                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
290                 hw->right = (buf[0] & 0x02) ? 1 : 0;
291
292                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
293                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
294                         if (hw->w == 2)
295                                 hw->scroll = (signed char)(buf[1]);
296                 }
297
298                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
299                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
300                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
301                 }
302
303                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
304                     ((buf[0] ^ buf[3]) & 0x02)) {
305                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
306                         default:
307                                 /*
308                                  * if nExtBtn is greater than 8 it should be
309                                  * considered invalid and treated as 0
310                                  */
311                                 break;
312                         case 8:
313                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
314                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
315                         case 6:
316                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
317                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
318                         case 4:
319                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
320                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
321                         case 2:
322                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
323                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
324                         }
325                 }
326         } else {
327                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
328                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
329
330                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
331                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
332
333                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
334                 hw->right = (buf[0] & 0x02) ? 1 : 0;
335         }
336 }
337
338 /*
339  *  called for each full received packet from the touchpad
340  */
341 static void synaptics_process_packet(struct psmouse *psmouse)
342 {
343         struct input_dev *dev = psmouse->dev;
344         struct synaptics_data *priv = psmouse->private;
345         struct synaptics_hw_state hw;
346         int num_fingers;
347         int finger_width;
348         int i;
349
350         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
351
352         if (hw.scroll) {
353                 priv->scroll += hw.scroll;
354
355                 while (priv->scroll >= 4) {
356                         input_report_key(dev, BTN_BACK, !hw.down);
357                         input_sync(dev);
358                         input_report_key(dev, BTN_BACK, hw.down);
359                         input_sync(dev);
360                         priv->scroll -= 4;
361                 }
362                 while (priv->scroll <= -4) {
363                         input_report_key(dev, BTN_FORWARD, !hw.up);
364                         input_sync(dev);
365                         input_report_key(dev, BTN_FORWARD, hw.up);
366                         input_sync(dev);
367                         priv->scroll += 4;
368                 }
369                 return;
370         }
371
372         if (hw.z > 0) {
373                 num_fingers = 1;
374                 finger_width = 5;
375                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
376                         switch (hw.w) {
377                         case 0 ... 1:
378                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
379                                         num_fingers = hw.w + 2;
380                                 break;
381                         case 2:
382                                 if (SYN_MODEL_PEN(priv->model_id))
383                                         ;   /* Nothing, treat a pen as a single finger */
384                                 break;
385                         case 4 ... 15:
386                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
387                                         finger_width = hw.w;
388                                 break;
389                         }
390                 }
391         } else {
392                 num_fingers = 0;
393                 finger_width = 0;
394         }
395
396         /* Post events
397          * BTN_TOUCH has to be first as mousedev relies on it when doing
398          * absolute -> relative conversion
399          */
400         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
401         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
402
403         if (hw.z > 0) {
404                 input_report_abs(dev, ABS_X, hw.x);
405                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
406         }
407         input_report_abs(dev, ABS_PRESSURE, hw.z);
408
409         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
410         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
411         input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
412         input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
413
414         input_report_key(dev, BTN_LEFT, hw.left);
415         input_report_key(dev, BTN_RIGHT, hw.right);
416
417         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
418                 input_report_key(dev, BTN_MIDDLE, hw.middle);
419
420         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
421                 input_report_key(dev, BTN_FORWARD, hw.up);
422                 input_report_key(dev, BTN_BACK, hw.down);
423         }
424
425         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
426                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
427
428         input_sync(dev);
429 }
430
431 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
432 {
433         static unsigned char newabs_mask[]      = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
434         static unsigned char newabs_rel_mask[]  = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
435         static unsigned char newabs_rslt[]      = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
436         static unsigned char oldabs_mask[]      = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
437         static unsigned char oldabs_rslt[]      = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
438
439         if (idx < 0 || idx > 4)
440                 return 0;
441
442         switch (pkt_type) {
443                 case SYN_NEWABS:
444                 case SYN_NEWABS_RELAXED:
445                         return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
446
447                 case SYN_NEWABS_STRICT:
448                         return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
449
450                 case SYN_OLDABS:
451                         return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
452
453                 default:
454                         printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
455                         return 0;
456         }
457 }
458
459 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
460 {
461         int i;
462
463         for (i = 0; i < 5; i++)
464                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
465                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
466                         return SYN_NEWABS_RELAXED;
467                 }
468
469         return SYN_NEWABS_STRICT;
470 }
471
472 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
473 {
474         struct input_dev *dev = psmouse->dev;
475         struct synaptics_data *priv = psmouse->private;
476
477         input_regs(dev, regs);
478
479         if (psmouse->pktcnt >= 6) { /* Full packet received */
480                 if (unlikely(priv->pkt_type == SYN_NEWABS))
481                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
482
483                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
484                         if (psmouse->ps2dev.serio->child)
485                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
486                 } else
487                         synaptics_process_packet(psmouse);
488
489                 return PSMOUSE_FULL_PACKET;
490         }
491
492         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
493                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
494 }
495
496 /*****************************************************************************
497  *      Driver initialization/cleanup functions
498  ****************************************************************************/
499 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
500 {
501         int i;
502
503         set_bit(EV_ABS, dev->evbit);
504         input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
505         input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
506         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
507         set_bit(ABS_TOOL_WIDTH, dev->absbit);
508
509         set_bit(EV_KEY, dev->evbit);
510         set_bit(BTN_TOUCH, dev->keybit);
511         set_bit(BTN_TOOL_FINGER, dev->keybit);
512         set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
513         set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
514
515         set_bit(BTN_LEFT, dev->keybit);
516         set_bit(BTN_RIGHT, dev->keybit);
517
518         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
519                 set_bit(BTN_MIDDLE, dev->keybit);
520
521         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
522             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
523                 set_bit(BTN_FORWARD, dev->keybit);
524                 set_bit(BTN_BACK, dev->keybit);
525         }
526
527         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
528                 set_bit(BTN_0 + i, dev->keybit);
529
530         clear_bit(EV_REL, dev->evbit);
531         clear_bit(REL_X, dev->relbit);
532         clear_bit(REL_Y, dev->relbit);
533 }
534
535 void synaptics_reset(struct psmouse *psmouse)
536 {
537         /* reset touchpad back to relative mode, gestures enabled */
538         synaptics_mode_cmd(psmouse, 0);
539 }
540
541 static void synaptics_disconnect(struct psmouse *psmouse)
542 {
543         synaptics_reset(psmouse);
544         kfree(psmouse->private);
545         psmouse->private = NULL;
546 }
547
548 static int synaptics_reconnect(struct psmouse *psmouse)
549 {
550         struct synaptics_data *priv = psmouse->private;
551         struct synaptics_data old_priv = *priv;
552
553         if (synaptics_detect(psmouse, 0))
554                 return -1;
555
556         if (synaptics_query_hardware(psmouse)) {
557                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
558                 return -1;
559         }
560
561         if (old_priv.identity != priv->identity ||
562             old_priv.model_id != priv->model_id ||
563             old_priv.capabilities != priv->capabilities ||
564             old_priv.ext_cap != priv->ext_cap)
565                 return -1;
566
567         if (synaptics_set_absolute_mode(psmouse)) {
568                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
569                 return -1;
570         }
571
572         return 0;
573 }
574
575 int synaptics_detect(struct psmouse *psmouse, int set_properties)
576 {
577         struct ps2dev *ps2dev = &psmouse->ps2dev;
578         unsigned char param[4];
579
580         param[0] = 0;
581
582         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
583         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
584         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
585         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
586         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
587
588         if (param[1] != 0x47)
589                 return -1;
590
591         if (set_properties) {
592                 psmouse->vendor = "Synaptics";
593                 psmouse->name = "TouchPad";
594         }
595
596         return 0;
597 }
598
599 #if defined(__i386__)
600 #include <linux/dmi.h>
601 static struct dmi_system_id toshiba_dmi_table[] = {
602         {
603                 .ident = "Toshiba Satellite",
604                 .matches = {
605                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
606                         DMI_MATCH(DMI_PRODUCT_NAME , "Satellite"),
607                 },
608         },
609         {
610                 .ident = "Toshiba Dynabook",
611                 .matches = {
612                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
613                         DMI_MATCH(DMI_PRODUCT_NAME , "dynabook"),
614                 },
615         },
616         { }
617 };
618 #endif
619
620 int synaptics_init(struct psmouse *psmouse)
621 {
622         struct synaptics_data *priv;
623
624         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
625         if (!priv)
626                 return -1;
627
628         if (synaptics_query_hardware(psmouse)) {
629                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
630                 goto init_fail;
631         }
632
633         if (synaptics_set_absolute_mode(psmouse)) {
634                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
635                 goto init_fail;
636         }
637
638         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
639
640         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
641                 SYN_ID_MODEL(priv->identity),
642                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
643                 priv->model_id, priv->capabilities, priv->ext_cap);
644
645         set_input_params(psmouse->dev, priv);
646
647         psmouse->protocol_handler = synaptics_process_byte;
648         psmouse->set_rate = synaptics_set_rate;
649         psmouse->disconnect = synaptics_disconnect;
650         psmouse->reconnect = synaptics_reconnect;
651         psmouse->pktsize = 6;
652         /* Synaptics can usually stay in sync without extra help */
653         psmouse->resync_time = 0;
654
655         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
656                 synaptics_pt_create(psmouse);
657
658 #if defined(__i386__)
659         /*
660          * Toshiba's KBC seems to have trouble handling data from
661          * Synaptics as full rate, switch to lower rate which is roughly
662          * thye same as rate of standard PS/2 mouse.
663          */
664         if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
665                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
666                         dmi_get_system_info(DMI_PRODUCT_NAME));
667                 psmouse->rate = 40;
668         }
669 #endif
670
671         return 0;
672
673  init_fail:
674         kfree(priv);
675         return -1;
676 }
677
678