Input: psmouse - use boolean type
[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, bool 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 /*
184  * Read touchpad resolution
185  * Resolution is left zero if touchpad does not support the query
186  */
187 static int synaptics_resolution(struct psmouse *psmouse)
188 {
189         struct synaptics_data *priv = psmouse->private;
190         unsigned char res[3];
191
192         if (SYN_ID_MAJOR(priv->identity) < 4)
193                 return 0;
194
195         if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res))
196                 return 0;
197
198         if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) {
199                 priv->x_res = res[0]; /* x resolution in units/mm */
200                 priv->y_res = res[2]; /* y resolution in units/mm */
201         }
202
203         return 0;
204 }
205
206 static int synaptics_query_hardware(struct psmouse *psmouse)
207 {
208         if (synaptics_identify(psmouse))
209                 return -1;
210         if (synaptics_model_id(psmouse))
211                 return -1;
212         if (synaptics_capability(psmouse))
213                 return -1;
214         if (synaptics_resolution(psmouse))
215                 return -1;
216
217         return 0;
218 }
219
220 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
221 {
222         struct synaptics_data *priv = psmouse->private;
223
224         priv->mode = SYN_BIT_ABSOLUTE_MODE;
225         if (SYN_ID_MAJOR(priv->identity) >= 4)
226                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
227         if (SYN_CAP_EXTENDED(priv->capabilities))
228                 priv->mode |= SYN_BIT_W_MODE;
229
230         if (synaptics_mode_cmd(psmouse, priv->mode))
231                 return -1;
232
233         return 0;
234 }
235
236 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
237 {
238         struct synaptics_data *priv = psmouse->private;
239
240         if (rate >= 80) {
241                 priv->mode |= SYN_BIT_HIGH_RATE;
242                 psmouse->rate = 80;
243         } else {
244                 priv->mode &= ~SYN_BIT_HIGH_RATE;
245                 psmouse->rate = 40;
246         }
247
248         synaptics_mode_cmd(psmouse, priv->mode);
249 }
250
251 /*****************************************************************************
252  *      Synaptics pass-through PS/2 port support
253  ****************************************************************************/
254 static int synaptics_pt_write(struct serio *serio, unsigned char c)
255 {
256         struct psmouse *parent = serio_get_drvdata(serio->parent);
257         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
258
259         if (psmouse_sliced_command(parent, c))
260                 return -1;
261         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
262                 return -1;
263         return 0;
264 }
265
266 static inline int synaptics_is_pt_packet(unsigned char *buf)
267 {
268         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
269 }
270
271 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
272 {
273         struct psmouse *child = serio_get_drvdata(ptport);
274
275         if (child && child->state == PSMOUSE_ACTIVATED) {
276                 serio_interrupt(ptport, packet[1], 0);
277                 serio_interrupt(ptport, packet[4], 0);
278                 serio_interrupt(ptport, packet[5], 0);
279                 if (child->pktsize == 4)
280                         serio_interrupt(ptport, packet[2], 0);
281         } else
282                 serio_interrupt(ptport, packet[1], 0);
283 }
284
285 static void synaptics_pt_activate(struct psmouse *psmouse)
286 {
287         struct serio *ptport = psmouse->ps2dev.serio->child;
288         struct psmouse *child = serio_get_drvdata(ptport);
289         struct synaptics_data *priv = psmouse->private;
290
291         /* adjust the touchpad to child's choice of protocol */
292         if (child) {
293                 if (child->pktsize == 4)
294                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
295                 else
296                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
297
298                 if (synaptics_mode_cmd(psmouse, priv->mode))
299                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
300         }
301 }
302
303 static void synaptics_pt_create(struct psmouse *psmouse)
304 {
305         struct serio *serio;
306
307         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
308         if (!serio) {
309                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
310                 return;
311         }
312
313         serio->id.type = SERIO_PS_PSTHRU;
314         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
315         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
316         serio->write = synaptics_pt_write;
317         serio->parent = psmouse->ps2dev.serio;
318
319         psmouse->pt_activate = synaptics_pt_activate;
320
321         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
322         serio_register_port(serio);
323 }
324
325 /*****************************************************************************
326  *      Functions to interpret the absolute mode packets
327  ****************************************************************************/
328
329 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
330 {
331         memset(hw, 0, sizeof(struct synaptics_hw_state));
332
333         if (SYN_MODEL_NEWABS(priv->model_id)) {
334                 hw->x = (((buf[3] & 0x10) << 8) |
335                          ((buf[1] & 0x0f) << 8) |
336                          buf[4]);
337                 hw->y = (((buf[3] & 0x20) << 7) |
338                          ((buf[1] & 0xf0) << 4) |
339                          buf[5]);
340
341                 hw->z = buf[2];
342                 hw->w = (((buf[0] & 0x30) >> 2) |
343                          ((buf[0] & 0x04) >> 1) |
344                          ((buf[3] & 0x04) >> 2));
345
346                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
347                 hw->right = (buf[0] & 0x02) ? 1 : 0;
348
349                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
350                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
351                         if (hw->w == 2)
352                                 hw->scroll = (signed char)(buf[1]);
353                 }
354
355                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
356                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
357                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
358                 }
359
360                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
361                     ((buf[0] ^ buf[3]) & 0x02)) {
362                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
363                         default:
364                                 /*
365                                  * if nExtBtn is greater than 8 it should be
366                                  * considered invalid and treated as 0
367                                  */
368                                 break;
369                         case 8:
370                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
371                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
372                         case 6:
373                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
374                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
375                         case 4:
376                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
377                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
378                         case 2:
379                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
380                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
381                         }
382                 }
383         } else {
384                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
385                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
386
387                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
388                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
389
390                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
391                 hw->right = (buf[0] & 0x02) ? 1 : 0;
392         }
393 }
394
395 /*
396  *  called for each full received packet from the touchpad
397  */
398 static void synaptics_process_packet(struct psmouse *psmouse)
399 {
400         struct input_dev *dev = psmouse->dev;
401         struct synaptics_data *priv = psmouse->private;
402         struct synaptics_hw_state hw;
403         int num_fingers;
404         int finger_width;
405         int i;
406
407         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
408
409         if (hw.scroll) {
410                 priv->scroll += hw.scroll;
411
412                 while (priv->scroll >= 4) {
413                         input_report_key(dev, BTN_BACK, !hw.down);
414                         input_sync(dev);
415                         input_report_key(dev, BTN_BACK, hw.down);
416                         input_sync(dev);
417                         priv->scroll -= 4;
418                 }
419                 while (priv->scroll <= -4) {
420                         input_report_key(dev, BTN_FORWARD, !hw.up);
421                         input_sync(dev);
422                         input_report_key(dev, BTN_FORWARD, hw.up);
423                         input_sync(dev);
424                         priv->scroll += 4;
425                 }
426                 return;
427         }
428
429         if (hw.z > 0) {
430                 num_fingers = 1;
431                 finger_width = 5;
432                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
433                         switch (hw.w) {
434                         case 0 ... 1:
435                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
436                                         num_fingers = hw.w + 2;
437                                 break;
438                         case 2:
439                                 if (SYN_MODEL_PEN(priv->model_id))
440                                         ;   /* Nothing, treat a pen as a single finger */
441                                 break;
442                         case 4 ... 15:
443                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
444                                         finger_width = hw.w;
445                                 break;
446                         }
447                 }
448         } else {
449                 num_fingers = 0;
450                 finger_width = 0;
451         }
452
453         /* Post events
454          * BTN_TOUCH has to be first as mousedev relies on it when doing
455          * absolute -> relative conversion
456          */
457         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
458         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
459
460         if (hw.z > 0) {
461                 input_report_abs(dev, ABS_X, hw.x);
462                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
463         }
464         input_report_abs(dev, ABS_PRESSURE, hw.z);
465
466         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
467         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
468         input_report_key(dev, BTN_LEFT, hw.left);
469         input_report_key(dev, BTN_RIGHT, hw.right);
470
471         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
472                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
473                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
474         }
475
476         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
477                 input_report_key(dev, BTN_MIDDLE, hw.middle);
478
479         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
480                 input_report_key(dev, BTN_FORWARD, hw.up);
481                 input_report_key(dev, BTN_BACK, hw.down);
482         }
483
484         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
485                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
486
487         input_sync(dev);
488 }
489
490 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
491 {
492         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
493         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
494         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
495         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
496         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
497
498         if (idx < 0 || idx > 4)
499                 return 0;
500
501         switch (pkt_type) {
502                 case SYN_NEWABS:
503                 case SYN_NEWABS_RELAXED:
504                         return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
505
506                 case SYN_NEWABS_STRICT:
507                         return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
508
509                 case SYN_OLDABS:
510                         return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
511
512                 default:
513                         printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
514                         return 0;
515         }
516 }
517
518 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
519 {
520         int i;
521
522         for (i = 0; i < 5; i++)
523                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
524                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
525                         return SYN_NEWABS_RELAXED;
526                 }
527
528         return SYN_NEWABS_STRICT;
529 }
530
531 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
532 {
533         struct synaptics_data *priv = psmouse->private;
534
535         if (psmouse->pktcnt >= 6) { /* Full packet received */
536                 if (unlikely(priv->pkt_type == SYN_NEWABS))
537                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
538
539                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
540                         if (psmouse->ps2dev.serio->child)
541                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
542                 } else
543                         synaptics_process_packet(psmouse);
544
545                 return PSMOUSE_FULL_PACKET;
546         }
547
548         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
549                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
550 }
551
552 /*****************************************************************************
553  *      Driver initialization/cleanup functions
554  ****************************************************************************/
555 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
556 {
557         int i;
558
559         __set_bit(EV_ABS, dev->evbit);
560         input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
561         input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
562         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
563         __set_bit(ABS_TOOL_WIDTH, dev->absbit);
564
565         __set_bit(EV_KEY, dev->evbit);
566         __set_bit(BTN_TOUCH, dev->keybit);
567         __set_bit(BTN_TOOL_FINGER, dev->keybit);
568         __set_bit(BTN_LEFT, dev->keybit);
569         __set_bit(BTN_RIGHT, dev->keybit);
570
571         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
572                 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
573                 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
574         }
575
576         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
577                 __set_bit(BTN_MIDDLE, dev->keybit);
578
579         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
580             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
581                 __set_bit(BTN_FORWARD, dev->keybit);
582                 __set_bit(BTN_BACK, dev->keybit);
583         }
584
585         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
586                 __set_bit(BTN_0 + i, dev->keybit);
587
588         __clear_bit(EV_REL, dev->evbit);
589         __clear_bit(REL_X, dev->relbit);
590         __clear_bit(REL_Y, dev->relbit);
591
592         dev->absres[ABS_X] = priv->x_res;
593         dev->absres[ABS_Y] = priv->y_res;
594 }
595
596 static void synaptics_disconnect(struct psmouse *psmouse)
597 {
598         synaptics_reset(psmouse);
599         kfree(psmouse->private);
600         psmouse->private = NULL;
601 }
602
603 static int synaptics_reconnect(struct psmouse *psmouse)
604 {
605         struct synaptics_data *priv = psmouse->private;
606         struct synaptics_data old_priv = *priv;
607
608         psmouse_reset(psmouse);
609
610         if (synaptics_detect(psmouse, 0))
611                 return -1;
612
613         if (synaptics_query_hardware(psmouse)) {
614                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
615                 return -1;
616         }
617
618         if (old_priv.identity != priv->identity ||
619             old_priv.model_id != priv->model_id ||
620             old_priv.capabilities != priv->capabilities ||
621             old_priv.ext_cap != priv->ext_cap)
622                 return -1;
623
624         if (synaptics_set_absolute_mode(psmouse)) {
625                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
626                 return -1;
627         }
628
629         return 0;
630 }
631
632 #if defined(__i386__)
633 #include <linux/dmi.h>
634 static const struct dmi_system_id toshiba_dmi_table[] = {
635         {
636                 .ident = "Toshiba Satellite",
637                 .matches = {
638                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
639                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
640                 },
641         },
642         {
643                 .ident = "Toshiba Dynabook",
644                 .matches = {
645                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
646                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
647                 },
648         },
649         {
650                 .ident = "Toshiba Portege M300",
651                 .matches = {
652                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
653                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
654                 },
655         },
656         { }
657 };
658 #endif
659
660 int synaptics_init(struct psmouse *psmouse)
661 {
662         struct synaptics_data *priv;
663
664         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
665         if (!priv)
666                 return -1;
667
668         psmouse_reset(psmouse);
669
670         if (synaptics_query_hardware(psmouse)) {
671                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
672                 goto init_fail;
673         }
674
675         if (synaptics_set_absolute_mode(psmouse)) {
676                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
677                 goto init_fail;
678         }
679
680         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
681
682         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
683                 SYN_ID_MODEL(priv->identity),
684                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
685                 priv->model_id, priv->capabilities, priv->ext_cap);
686
687         set_input_params(psmouse->dev, priv);
688
689         /*
690          * Encode touchpad model so that it can be used to set
691          * input device->id.version and be visible to userspace.
692          * Because version is __u16 we have to drop something.
693          * Hardware info bits seem to be good candidates as they
694          * are documented to be for Synaptics corp. internal use.
695          */
696         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
697                           (priv->model_id & 0x000000ff);
698
699         psmouse->protocol_handler = synaptics_process_byte;
700         psmouse->set_rate = synaptics_set_rate;
701         psmouse->disconnect = synaptics_disconnect;
702         psmouse->reconnect = synaptics_reconnect;
703         psmouse->cleanup = synaptics_reset;
704         psmouse->pktsize = 6;
705         /* Synaptics can usually stay in sync without extra help */
706         psmouse->resync_time = 0;
707
708         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
709                 synaptics_pt_create(psmouse);
710
711 #if defined(__i386__)
712         /*
713          * Toshiba's KBC seems to have trouble handling data from
714          * Synaptics as full rate, switch to lower rate which is roughly
715          * thye same as rate of standard PS/2 mouse.
716          */
717         if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
718                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
719                         dmi_get_system_info(DMI_PRODUCT_NAME));
720                 psmouse->rate = 40;
721         }
722 #endif
723
724         return 0;
725
726  init_fail:
727         kfree(priv);
728         return -1;
729 }
730
731 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
732
733 int synaptics_init(struct psmouse *psmouse)
734 {
735         return -ENOSYS;
736 }
737
738 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
739