Input: synaptics - report multi-taps only if supported by the device
[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 /*****************************************************************************
45  *      Stuff we need even when we do not want native Synaptics support
46  ****************************************************************************/
47
48 /*
49  * Set the synaptics touchpad mode byte by special commands
50  */
51 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
52 {
53         unsigned char param[1];
54
55         if (psmouse_sliced_command(psmouse, mode))
56                 return -1;
57         param[0] = SYN_PS_SET_MODE2;
58         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
59                 return -1;
60         return 0;
61 }
62
63 int synaptics_detect(struct psmouse *psmouse, int set_properties)
64 {
65         struct ps2dev *ps2dev = &psmouse->ps2dev;
66         unsigned char param[4];
67
68         param[0] = 0;
69
70         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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_GETINFO);
75
76         if (param[1] != 0x47)
77                 return -ENODEV;
78
79         if (set_properties) {
80                 psmouse->vendor = "Synaptics";
81                 psmouse->name = "TouchPad";
82         }
83
84         return 0;
85 }
86
87 void synaptics_reset(struct psmouse *psmouse)
88 {
89         /* reset touchpad back to relative mode, gestures enabled */
90         synaptics_mode_cmd(psmouse, 0);
91 }
92
93 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
94
95 /*****************************************************************************
96  *      Synaptics communications functions
97  ****************************************************************************/
98
99 /*
100  * Send a command to the synpatics touchpad by special commands
101  */
102 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
103 {
104         if (psmouse_sliced_command(psmouse, c))
105                 return -1;
106         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
107                 return -1;
108         return 0;
109 }
110
111 /*
112  * Read the model-id bytes from the touchpad
113  * see also SYN_MODEL_* macros
114  */
115 static int synaptics_model_id(struct psmouse *psmouse)
116 {
117         struct synaptics_data *priv = psmouse->private;
118         unsigned char mi[3];
119
120         if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
121                 return -1;
122         priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
123         return 0;
124 }
125
126 /*
127  * Read the capability-bits from the touchpad
128  * see also the SYN_CAP_* macros
129  */
130 static int synaptics_capability(struct psmouse *psmouse)
131 {
132         struct synaptics_data *priv = psmouse->private;
133         unsigned char cap[3];
134
135         if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
136                 return -1;
137         priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
138         priv->ext_cap = 0;
139         if (!SYN_CAP_VALID(priv->capabilities))
140                 return -1;
141
142         /*
143          * Unless capExtended is set the rest of the flags should be ignored
144          */
145         if (!SYN_CAP_EXTENDED(priv->capabilities))
146                 priv->capabilities = 0;
147
148         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
149                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
150                         printk(KERN_ERR "Synaptics claims to have extended capabilities,"
151                                " but I'm not able to read them.");
152                 } else {
153                         priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
154
155                         /*
156                          * if nExtBtn is greater than 8 it should be considered
157                          * invalid and treated as 0
158                          */
159                         if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
160                                 priv->ext_cap &= 0xff0fff;
161                 }
162         }
163         return 0;
164 }
165
166 /*
167  * Identify Touchpad
168  * See also the SYN_ID_* macros
169  */
170 static int synaptics_identify(struct psmouse *psmouse)
171 {
172         struct synaptics_data *priv = psmouse->private;
173         unsigned char id[3];
174
175         if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
176                 return -1;
177         priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
178         if (SYN_ID_IS_SYNAPTICS(priv->identity))
179                 return 0;
180         return -1;
181 }
182
183 static int synaptics_query_hardware(struct psmouse *psmouse)
184 {
185         int retries = 0;
186
187         while ((retries++ < 3) && psmouse_reset(psmouse))
188                 /* empty */;
189
190         if (synaptics_identify(psmouse))
191                 return -1;
192         if (synaptics_model_id(psmouse))
193                 return -1;
194         if (synaptics_capability(psmouse))
195                 return -1;
196
197         return 0;
198 }
199
200 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
201 {
202         struct synaptics_data *priv = psmouse->private;
203
204         priv->mode = SYN_BIT_ABSOLUTE_MODE;
205         if (SYN_ID_MAJOR(priv->identity) >= 4)
206                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
207         if (SYN_CAP_EXTENDED(priv->capabilities))
208                 priv->mode |= SYN_BIT_W_MODE;
209
210         if (synaptics_mode_cmd(psmouse, priv->mode))
211                 return -1;
212
213         return 0;
214 }
215
216 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
217 {
218         struct synaptics_data *priv = psmouse->private;
219
220         if (rate >= 80) {
221                 priv->mode |= SYN_BIT_HIGH_RATE;
222                 psmouse->rate = 80;
223         } else {
224                 priv->mode &= ~SYN_BIT_HIGH_RATE;
225                 psmouse->rate = 40;
226         }
227
228         synaptics_mode_cmd(psmouse, priv->mode);
229 }
230
231 /*****************************************************************************
232  *      Synaptics pass-through PS/2 port support
233  ****************************************************************************/
234 static int synaptics_pt_write(struct serio *serio, unsigned char c)
235 {
236         struct psmouse *parent = serio_get_drvdata(serio->parent);
237         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
238
239         if (psmouse_sliced_command(parent, c))
240                 return -1;
241         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
242                 return -1;
243         return 0;
244 }
245
246 static inline int synaptics_is_pt_packet(unsigned char *buf)
247 {
248         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
249 }
250
251 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
252 {
253         struct psmouse *child = serio_get_drvdata(ptport);
254
255         if (child && child->state == PSMOUSE_ACTIVATED) {
256                 serio_interrupt(ptport, packet[1], 0);
257                 serio_interrupt(ptport, packet[4], 0);
258                 serio_interrupt(ptport, packet[5], 0);
259                 if (child->pktsize == 4)
260                         serio_interrupt(ptport, packet[2], 0);
261         } else
262                 serio_interrupt(ptport, packet[1], 0);
263 }
264
265 static void synaptics_pt_activate(struct psmouse *psmouse)
266 {
267         struct serio *ptport = psmouse->ps2dev.serio->child;
268         struct psmouse *child = serio_get_drvdata(ptport);
269         struct synaptics_data *priv = psmouse->private;
270
271         /* adjust the touchpad to child's choice of protocol */
272         if (child) {
273                 if (child->pktsize == 4)
274                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
275                 else
276                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
277
278                 if (synaptics_mode_cmd(psmouse, priv->mode))
279                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
280         }
281 }
282
283 static void synaptics_pt_create(struct psmouse *psmouse)
284 {
285         struct serio *serio;
286
287         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
288         if (!serio) {
289                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
290                 return;
291         }
292
293         serio->id.type = SERIO_PS_PSTHRU;
294         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
295         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
296         serio->write = synaptics_pt_write;
297         serio->parent = psmouse->ps2dev.serio;
298
299         psmouse->pt_activate = synaptics_pt_activate;
300
301         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
302         serio_register_port(serio);
303 }
304
305 /*****************************************************************************
306  *      Functions to interpret the absolute mode packets
307  ****************************************************************************/
308
309 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
310 {
311         memset(hw, 0, sizeof(struct synaptics_hw_state));
312
313         if (SYN_MODEL_NEWABS(priv->model_id)) {
314                 hw->x = (((buf[3] & 0x10) << 8) |
315                          ((buf[1] & 0x0f) << 8) |
316                          buf[4]);
317                 hw->y = (((buf[3] & 0x20) << 7) |
318                          ((buf[1] & 0xf0) << 4) |
319                          buf[5]);
320
321                 hw->z = buf[2];
322                 hw->w = (((buf[0] & 0x30) >> 2) |
323                          ((buf[0] & 0x04) >> 1) |
324                          ((buf[3] & 0x04) >> 2));
325
326                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
327                 hw->right = (buf[0] & 0x02) ? 1 : 0;
328
329                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
330                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
331                         if (hw->w == 2)
332                                 hw->scroll = (signed char)(buf[1]);
333                 }
334
335                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
336                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
337                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
338                 }
339
340                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
341                     ((buf[0] ^ buf[3]) & 0x02)) {
342                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
343                         default:
344                                 /*
345                                  * if nExtBtn is greater than 8 it should be
346                                  * considered invalid and treated as 0
347                                  */
348                                 break;
349                         case 8:
350                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
351                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
352                         case 6:
353                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
354                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
355                         case 4:
356                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
357                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
358                         case 2:
359                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
360                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
361                         }
362                 }
363         } else {
364                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
365                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
366
367                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
368                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
369
370                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
371                 hw->right = (buf[0] & 0x02) ? 1 : 0;
372         }
373 }
374
375 /*
376  *  called for each full received packet from the touchpad
377  */
378 static void synaptics_process_packet(struct psmouse *psmouse)
379 {
380         struct input_dev *dev = psmouse->dev;
381         struct synaptics_data *priv = psmouse->private;
382         struct synaptics_hw_state hw;
383         int num_fingers;
384         int finger_width;
385         int i;
386
387         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
388
389         if (hw.scroll) {
390                 priv->scroll += hw.scroll;
391
392                 while (priv->scroll >= 4) {
393                         input_report_key(dev, BTN_BACK, !hw.down);
394                         input_sync(dev);
395                         input_report_key(dev, BTN_BACK, hw.down);
396                         input_sync(dev);
397                         priv->scroll -= 4;
398                 }
399                 while (priv->scroll <= -4) {
400                         input_report_key(dev, BTN_FORWARD, !hw.up);
401                         input_sync(dev);
402                         input_report_key(dev, BTN_FORWARD, hw.up);
403                         input_sync(dev);
404                         priv->scroll += 4;
405                 }
406                 return;
407         }
408
409         if (hw.z > 0) {
410                 num_fingers = 1;
411                 finger_width = 5;
412                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
413                         switch (hw.w) {
414                         case 0 ... 1:
415                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
416                                         num_fingers = hw.w + 2;
417                                 break;
418                         case 2:
419                                 if (SYN_MODEL_PEN(priv->model_id))
420                                         ;   /* Nothing, treat a pen as a single finger */
421                                 break;
422                         case 4 ... 15:
423                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
424                                         finger_width = hw.w;
425                                 break;
426                         }
427                 }
428         } else {
429                 num_fingers = 0;
430                 finger_width = 0;
431         }
432
433         /* Post events
434          * BTN_TOUCH has to be first as mousedev relies on it when doing
435          * absolute -> relative conversion
436          */
437         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
438         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
439
440         if (hw.z > 0) {
441                 input_report_abs(dev, ABS_X, hw.x);
442                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
443         }
444         input_report_abs(dev, ABS_PRESSURE, hw.z);
445
446         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
447         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
448         input_report_key(dev, BTN_LEFT, hw.left);
449         input_report_key(dev, BTN_RIGHT, hw.right);
450
451         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
452                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
453                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
454         }
455
456         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
457                 input_report_key(dev, BTN_MIDDLE, hw.middle);
458
459         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
460                 input_report_key(dev, BTN_FORWARD, hw.up);
461                 input_report_key(dev, BTN_BACK, hw.down);
462         }
463
464         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
465                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
466
467         input_sync(dev);
468 }
469
470 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
471 {
472         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
473         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
474         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
475         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
476         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
477
478         if (idx < 0 || idx > 4)
479                 return 0;
480
481         switch (pkt_type) {
482                 case SYN_NEWABS:
483                 case SYN_NEWABS_RELAXED:
484                         return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
485
486                 case SYN_NEWABS_STRICT:
487                         return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
488
489                 case SYN_OLDABS:
490                         return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
491
492                 default:
493                         printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
494                         return 0;
495         }
496 }
497
498 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
499 {
500         int i;
501
502         for (i = 0; i < 5; i++)
503                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
504                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
505                         return SYN_NEWABS_RELAXED;
506                 }
507
508         return SYN_NEWABS_STRICT;
509 }
510
511 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
512 {
513         struct synaptics_data *priv = psmouse->private;
514
515         if (psmouse->pktcnt >= 6) { /* Full packet received */
516                 if (unlikely(priv->pkt_type == SYN_NEWABS))
517                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
518
519                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
520                         if (psmouse->ps2dev.serio->child)
521                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
522                 } else
523                         synaptics_process_packet(psmouse);
524
525                 return PSMOUSE_FULL_PACKET;
526         }
527
528         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
529                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
530 }
531
532 /*****************************************************************************
533  *      Driver initialization/cleanup functions
534  ****************************************************************************/
535 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
536 {
537         int i;
538
539         set_bit(EV_ABS, dev->evbit);
540         input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
541         input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
542         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
543         set_bit(ABS_TOOL_WIDTH, dev->absbit);
544
545         set_bit(EV_KEY, dev->evbit);
546         set_bit(BTN_TOUCH, dev->keybit);
547         set_bit(BTN_TOOL_FINGER, dev->keybit);
548         set_bit(BTN_LEFT, dev->keybit);
549         set_bit(BTN_RIGHT, dev->keybit);
550
551         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
552                 set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
553                 set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
554         }
555
556         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
557                 set_bit(BTN_MIDDLE, dev->keybit);
558
559         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
560             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
561                 set_bit(BTN_FORWARD, dev->keybit);
562                 set_bit(BTN_BACK, dev->keybit);
563         }
564
565         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
566                 set_bit(BTN_0 + i, dev->keybit);
567
568         clear_bit(EV_REL, dev->evbit);
569         clear_bit(REL_X, dev->relbit);
570         clear_bit(REL_Y, dev->relbit);
571 }
572
573 static void synaptics_disconnect(struct psmouse *psmouse)
574 {
575         synaptics_reset(psmouse);
576         kfree(psmouse->private);
577         psmouse->private = NULL;
578 }
579
580 static int synaptics_reconnect(struct psmouse *psmouse)
581 {
582         struct synaptics_data *priv = psmouse->private;
583         struct synaptics_data old_priv = *priv;
584
585         if (synaptics_detect(psmouse, 0))
586                 return -1;
587
588         if (synaptics_query_hardware(psmouse)) {
589                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
590                 return -1;
591         }
592
593         if (old_priv.identity != priv->identity ||
594             old_priv.model_id != priv->model_id ||
595             old_priv.capabilities != priv->capabilities ||
596             old_priv.ext_cap != priv->ext_cap)
597                 return -1;
598
599         if (synaptics_set_absolute_mode(psmouse)) {
600                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
601                 return -1;
602         }
603
604         return 0;
605 }
606
607 #if defined(__i386__)
608 #include <linux/dmi.h>
609 static const struct dmi_system_id toshiba_dmi_table[] = {
610         {
611                 .ident = "Toshiba Satellite",
612                 .matches = {
613                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
614                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
615                 },
616         },
617         {
618                 .ident = "Toshiba Dynabook",
619                 .matches = {
620                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
621                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
622                 },
623         },
624         {
625                 .ident = "Toshiba Portege M300",
626                 .matches = {
627                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
628                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
629                 },
630         },
631         { }
632 };
633 #endif
634
635 int synaptics_init(struct psmouse *psmouse)
636 {
637         struct synaptics_data *priv;
638
639         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
640         if (!priv)
641                 return -1;
642
643         if (synaptics_query_hardware(psmouse)) {
644                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
645                 goto init_fail;
646         }
647
648         if (synaptics_set_absolute_mode(psmouse)) {
649                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
650                 goto init_fail;
651         }
652
653         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
654
655         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
656                 SYN_ID_MODEL(priv->identity),
657                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
658                 priv->model_id, priv->capabilities, priv->ext_cap);
659
660         set_input_params(psmouse->dev, priv);
661
662         /*
663          * Encode touchpad model so that it can be used to set
664          * input device->id.version and be visible to userspace.
665          * Because version is __u16 we have to drop something.
666          * Hardware info bits seem to be good candidates as they
667          * are documented to be for Synaptics corp. internal use.
668          */
669         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
670                           (priv->model_id & 0x000000ff);
671
672         psmouse->protocol_handler = synaptics_process_byte;
673         psmouse->set_rate = synaptics_set_rate;
674         psmouse->disconnect = synaptics_disconnect;
675         psmouse->reconnect = synaptics_reconnect;
676         psmouse->cleanup = synaptics_reset;
677         psmouse->pktsize = 6;
678         /* Synaptics can usually stay in sync without extra help */
679         psmouse->resync_time = 0;
680
681         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
682                 synaptics_pt_create(psmouse);
683
684 #if defined(__i386__)
685         /*
686          * Toshiba's KBC seems to have trouble handling data from
687          * Synaptics as full rate, switch to lower rate which is roughly
688          * thye same as rate of standard PS/2 mouse.
689          */
690         if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
691                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
692                         dmi_get_system_info(DMI_PRODUCT_NAME));
693                 psmouse->rate = 40;
694         }
695 #endif
696
697         return 0;
698
699  init_fail:
700         kfree(priv);
701         return -1;
702 }
703
704 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
705
706 int synaptics_init(struct psmouse *psmouse)
707 {
708         return -ENOSYS;
709 }
710
711 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
712