f3e4f7b0240d04d40521f3ff1b79302293c0ea32
[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         if (synaptics_identify(psmouse))
186                 return -1;
187         if (synaptics_model_id(psmouse))
188                 return -1;
189         if (synaptics_capability(psmouse))
190                 return -1;
191
192         return 0;
193 }
194
195 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
196 {
197         struct synaptics_data *priv = psmouse->private;
198
199         priv->mode = SYN_BIT_ABSOLUTE_MODE;
200         if (SYN_ID_MAJOR(priv->identity) >= 4)
201                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
202         if (SYN_CAP_EXTENDED(priv->capabilities))
203                 priv->mode |= SYN_BIT_W_MODE;
204
205         if (synaptics_mode_cmd(psmouse, priv->mode))
206                 return -1;
207
208         return 0;
209 }
210
211 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
212 {
213         struct synaptics_data *priv = psmouse->private;
214
215         if (rate >= 80) {
216                 priv->mode |= SYN_BIT_HIGH_RATE;
217                 psmouse->rate = 80;
218         } else {
219                 priv->mode &= ~SYN_BIT_HIGH_RATE;
220                 psmouse->rate = 40;
221         }
222
223         synaptics_mode_cmd(psmouse, priv->mode);
224 }
225
226 /*****************************************************************************
227  *      Synaptics pass-through PS/2 port support
228  ****************************************************************************/
229 static int synaptics_pt_write(struct serio *serio, unsigned char c)
230 {
231         struct psmouse *parent = serio_get_drvdata(serio->parent);
232         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
233
234         if (psmouse_sliced_command(parent, c))
235                 return -1;
236         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
237                 return -1;
238         return 0;
239 }
240
241 static inline int synaptics_is_pt_packet(unsigned char *buf)
242 {
243         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
244 }
245
246 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
247 {
248         struct psmouse *child = serio_get_drvdata(ptport);
249
250         if (child && child->state == PSMOUSE_ACTIVATED) {
251                 serio_interrupt(ptport, packet[1], 0);
252                 serio_interrupt(ptport, packet[4], 0);
253                 serio_interrupt(ptport, packet[5], 0);
254                 if (child->pktsize == 4)
255                         serio_interrupt(ptport, packet[2], 0);
256         } else
257                 serio_interrupt(ptport, packet[1], 0);
258 }
259
260 static void synaptics_pt_activate(struct psmouse *psmouse)
261 {
262         struct serio *ptport = psmouse->ps2dev.serio->child;
263         struct psmouse *child = serio_get_drvdata(ptport);
264         struct synaptics_data *priv = psmouse->private;
265
266         /* adjust the touchpad to child's choice of protocol */
267         if (child) {
268                 if (child->pktsize == 4)
269                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
270                 else
271                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
272
273                 if (synaptics_mode_cmd(psmouse, priv->mode))
274                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
275         }
276 }
277
278 static void synaptics_pt_create(struct psmouse *psmouse)
279 {
280         struct serio *serio;
281
282         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
283         if (!serio) {
284                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
285                 return;
286         }
287
288         serio->id.type = SERIO_PS_PSTHRU;
289         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
290         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
291         serio->write = synaptics_pt_write;
292         serio->parent = psmouse->ps2dev.serio;
293
294         psmouse->pt_activate = synaptics_pt_activate;
295
296         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
297         serio_register_port(serio);
298 }
299
300 /*****************************************************************************
301  *      Functions to interpret the absolute mode packets
302  ****************************************************************************/
303
304 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
305 {
306         memset(hw, 0, sizeof(struct synaptics_hw_state));
307
308         if (SYN_MODEL_NEWABS(priv->model_id)) {
309                 hw->x = (((buf[3] & 0x10) << 8) |
310                          ((buf[1] & 0x0f) << 8) |
311                          buf[4]);
312                 hw->y = (((buf[3] & 0x20) << 7) |
313                          ((buf[1] & 0xf0) << 4) |
314                          buf[5]);
315
316                 hw->z = buf[2];
317                 hw->w = (((buf[0] & 0x30) >> 2) |
318                          ((buf[0] & 0x04) >> 1) |
319                          ((buf[3] & 0x04) >> 2));
320
321                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
322                 hw->right = (buf[0] & 0x02) ? 1 : 0;
323
324                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
325                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
326                         if (hw->w == 2)
327                                 hw->scroll = (signed char)(buf[1]);
328                 }
329
330                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
331                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
332                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
333                 }
334
335                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
336                     ((buf[0] ^ buf[3]) & 0x02)) {
337                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
338                         default:
339                                 /*
340                                  * if nExtBtn is greater than 8 it should be
341                                  * considered invalid and treated as 0
342                                  */
343                                 break;
344                         case 8:
345                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
346                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
347                         case 6:
348                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
349                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
350                         case 4:
351                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
352                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
353                         case 2:
354                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
355                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
356                         }
357                 }
358         } else {
359                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
360                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
361
362                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
363                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
364
365                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
366                 hw->right = (buf[0] & 0x02) ? 1 : 0;
367         }
368 }
369
370 /*
371  *  called for each full received packet from the touchpad
372  */
373 static void synaptics_process_packet(struct psmouse *psmouse)
374 {
375         struct input_dev *dev = psmouse->dev;
376         struct synaptics_data *priv = psmouse->private;
377         struct synaptics_hw_state hw;
378         int num_fingers;
379         int finger_width;
380         int i;
381
382         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
383
384         if (hw.scroll) {
385                 priv->scroll += hw.scroll;
386
387                 while (priv->scroll >= 4) {
388                         input_report_key(dev, BTN_BACK, !hw.down);
389                         input_sync(dev);
390                         input_report_key(dev, BTN_BACK, hw.down);
391                         input_sync(dev);
392                         priv->scroll -= 4;
393                 }
394                 while (priv->scroll <= -4) {
395                         input_report_key(dev, BTN_FORWARD, !hw.up);
396                         input_sync(dev);
397                         input_report_key(dev, BTN_FORWARD, hw.up);
398                         input_sync(dev);
399                         priv->scroll += 4;
400                 }
401                 return;
402         }
403
404         if (hw.z > 0) {
405                 num_fingers = 1;
406                 finger_width = 5;
407                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
408                         switch (hw.w) {
409                         case 0 ... 1:
410                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
411                                         num_fingers = hw.w + 2;
412                                 break;
413                         case 2:
414                                 if (SYN_MODEL_PEN(priv->model_id))
415                                         ;   /* Nothing, treat a pen as a single finger */
416                                 break;
417                         case 4 ... 15:
418                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
419                                         finger_width = hw.w;
420                                 break;
421                         }
422                 }
423         } else {
424                 num_fingers = 0;
425                 finger_width = 0;
426         }
427
428         /* Post events
429          * BTN_TOUCH has to be first as mousedev relies on it when doing
430          * absolute -> relative conversion
431          */
432         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
433         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
434
435         if (hw.z > 0) {
436                 input_report_abs(dev, ABS_X, hw.x);
437                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
438         }
439         input_report_abs(dev, ABS_PRESSURE, hw.z);
440
441         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
442         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
443         input_report_key(dev, BTN_LEFT, hw.left);
444         input_report_key(dev, BTN_RIGHT, hw.right);
445
446         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
447                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
448                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
449         }
450
451         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
452                 input_report_key(dev, BTN_MIDDLE, hw.middle);
453
454         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
455                 input_report_key(dev, BTN_FORWARD, hw.up);
456                 input_report_key(dev, BTN_BACK, hw.down);
457         }
458
459         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
460                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
461
462         input_sync(dev);
463 }
464
465 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
466 {
467         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
468         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
469         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
470         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
471         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
472
473         if (idx < 0 || idx > 4)
474                 return 0;
475
476         switch (pkt_type) {
477                 case SYN_NEWABS:
478                 case SYN_NEWABS_RELAXED:
479                         return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
480
481                 case SYN_NEWABS_STRICT:
482                         return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
483
484                 case SYN_OLDABS:
485                         return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
486
487                 default:
488                         printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
489                         return 0;
490         }
491 }
492
493 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
494 {
495         int i;
496
497         for (i = 0; i < 5; i++)
498                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
499                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
500                         return SYN_NEWABS_RELAXED;
501                 }
502
503         return SYN_NEWABS_STRICT;
504 }
505
506 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
507 {
508         struct synaptics_data *priv = psmouse->private;
509
510         if (psmouse->pktcnt >= 6) { /* Full packet received */
511                 if (unlikely(priv->pkt_type == SYN_NEWABS))
512                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
513
514                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
515                         if (psmouse->ps2dev.serio->child)
516                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
517                 } else
518                         synaptics_process_packet(psmouse);
519
520                 return PSMOUSE_FULL_PACKET;
521         }
522
523         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
524                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
525 }
526
527 /*****************************************************************************
528  *      Driver initialization/cleanup functions
529  ****************************************************************************/
530 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
531 {
532         int i;
533
534         set_bit(EV_ABS, dev->evbit);
535         input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
536         input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
537         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
538         set_bit(ABS_TOOL_WIDTH, dev->absbit);
539
540         set_bit(EV_KEY, dev->evbit);
541         set_bit(BTN_TOUCH, dev->keybit);
542         set_bit(BTN_TOOL_FINGER, dev->keybit);
543         set_bit(BTN_LEFT, dev->keybit);
544         set_bit(BTN_RIGHT, dev->keybit);
545
546         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
547                 set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
548                 set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
549         }
550
551         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
552                 set_bit(BTN_MIDDLE, dev->keybit);
553
554         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
555             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
556                 set_bit(BTN_FORWARD, dev->keybit);
557                 set_bit(BTN_BACK, dev->keybit);
558         }
559
560         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
561                 set_bit(BTN_0 + i, dev->keybit);
562
563         clear_bit(EV_REL, dev->evbit);
564         clear_bit(REL_X, dev->relbit);
565         clear_bit(REL_Y, dev->relbit);
566 }
567
568 static void synaptics_disconnect(struct psmouse *psmouse)
569 {
570         synaptics_reset(psmouse);
571         kfree(psmouse->private);
572         psmouse->private = NULL;
573 }
574
575 static int synaptics_reconnect(struct psmouse *psmouse)
576 {
577         struct synaptics_data *priv = psmouse->private;
578         struct synaptics_data old_priv = *priv;
579
580         psmouse_reset(psmouse);
581
582         if (synaptics_detect(psmouse, 0))
583                 return -1;
584
585         if (synaptics_query_hardware(psmouse)) {
586                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
587                 return -1;
588         }
589
590         if (old_priv.identity != priv->identity ||
591             old_priv.model_id != priv->model_id ||
592             old_priv.capabilities != priv->capabilities ||
593             old_priv.ext_cap != priv->ext_cap)
594                 return -1;
595
596         if (synaptics_set_absolute_mode(psmouse)) {
597                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
598                 return -1;
599         }
600
601         return 0;
602 }
603
604 #if defined(__i386__)
605 #include <linux/dmi.h>
606 static const struct dmi_system_id toshiba_dmi_table[] = {
607         {
608                 .ident = "Toshiba Satellite",
609                 .matches = {
610                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
611                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
612                 },
613         },
614         {
615                 .ident = "Toshiba Dynabook",
616                 .matches = {
617                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
618                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
619                 },
620         },
621         {
622                 .ident = "Toshiba Portege M300",
623                 .matches = {
624                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
625                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
626                 },
627         },
628         { }
629 };
630 #endif
631
632 int synaptics_init(struct psmouse *psmouse)
633 {
634         struct synaptics_data *priv;
635
636         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
637         if (!priv)
638                 return -1;
639
640         psmouse_reset(psmouse);
641
642         if (synaptics_query_hardware(psmouse)) {
643                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
644                 goto init_fail;
645         }
646
647         if (synaptics_set_absolute_mode(psmouse)) {
648                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
649                 goto init_fail;
650         }
651
652         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
653
654         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
655                 SYN_ID_MODEL(priv->identity),
656                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
657                 priv->model_id, priv->capabilities, priv->ext_cap);
658
659         set_input_params(psmouse->dev, priv);
660
661         /*
662          * Encode touchpad model so that it can be used to set
663          * input device->id.version and be visible to userspace.
664          * Because version is __u16 we have to drop something.
665          * Hardware info bits seem to be good candidates as they
666          * are documented to be for Synaptics corp. internal use.
667          */
668         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
669                           (priv->model_id & 0x000000ff);
670
671         psmouse->protocol_handler = synaptics_process_byte;
672         psmouse->set_rate = synaptics_set_rate;
673         psmouse->disconnect = synaptics_disconnect;
674         psmouse->reconnect = synaptics_reconnect;
675         psmouse->cleanup = synaptics_reset;
676         psmouse->pktsize = 6;
677         /* Synaptics can usually stay in sync without extra help */
678         psmouse->resync_time = 0;
679
680         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
681                 synaptics_pt_create(psmouse);
682
683 #if defined(__i386__)
684         /*
685          * Toshiba's KBC seems to have trouble handling data from
686          * Synaptics as full rate, switch to lower rate which is roughly
687          * thye same as rate of standard PS/2 mouse.
688          */
689         if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
690                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
691                         dmi_get_system_info(DMI_PRODUCT_NAME));
692                 psmouse->rate = 40;
693         }
694 #endif
695
696         return 0;
697
698  init_fail:
699         kfree(priv);
700         return -1;
701 }
702
703 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
704
705 int synaptics_init(struct psmouse *psmouse)
706 {
707         return -ENOSYS;
708 }
709
710 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
711