97cdfd6acaca039e06d89e3073a72c8b712d70dd
[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 = 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