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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / input / mouse / synaptics.c
blob69832f8fb7202e4716e23d529a7f2ac33c8db60f
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 void print_ident(struct synaptics_data *priv)
147 {
148 printk(KERN_INFO "Synaptics Touchpad, model: %ld\n", SYN_ID_MODEL(priv->identity));
149 printk(KERN_INFO " Firmware: %ld.%ld\n", SYN_ID_MAJOR(priv->identity),
150 SYN_ID_MINOR(priv->identity));
151 if (SYN_MODEL_ROT180(priv->model_id))
152 printk(KERN_INFO " 180 degree mounted touchpad\n");
153 if (SYN_MODEL_PORTRAIT(priv->model_id))
154 printk(KERN_INFO " portrait touchpad\n");
155 printk(KERN_INFO " Sensor: %ld\n", SYN_MODEL_SENSOR(priv->model_id));
156 if (SYN_MODEL_NEWABS(priv->model_id))
157 printk(KERN_INFO " new absolute packet format\n");
158 if (SYN_MODEL_PEN(priv->model_id))
159 printk(KERN_INFO " pen detection\n");
160
161 if (SYN_CAP_EXTENDED(priv->capabilities)) {
162 printk(KERN_INFO " Touchpad has extended capability bits\n");
163 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
164 printk(KERN_INFO " -> %d multi-buttons, i.e. besides standard buttons\n",
165 (int)(SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)));
166 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
167 printk(KERN_INFO " -> middle button\n");
168 if (SYN_CAP_FOUR_BUTTON(priv->capabilities))
169 printk(KERN_INFO " -> four buttons\n");
170 if (SYN_CAP_MULTIFINGER(priv->capabilities))
171 printk(KERN_INFO " -> multifinger detection\n");
172 if (SYN_CAP_PALMDETECT(priv->capabilities))
173 printk(KERN_INFO " -> palm detection\n");
174 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
175 printk(KERN_INFO " -> pass-through port\n");
176 }
177 }
178
179 static int synaptics_query_hardware(struct psmouse *psmouse)
180 {
181 int retries = 0;
182
183 while ((retries++ < 3) && psmouse_reset(psmouse))
184 printk(KERN_ERR "synaptics reset failed\n");
185
186 if (synaptics_identify(psmouse))
187 return -1;
188 if (synaptics_model_id(psmouse))
189 return -1;
190 if (synaptics_capability(psmouse))
191 return -1;
192
193 return 0;
194 }
195
196 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
197 {
198 struct synaptics_data *priv = psmouse->private;
199
200 priv->mode = SYN_BIT_ABSOLUTE_MODE;
201 if (SYN_ID_MAJOR(priv->identity) >= 4)
202 priv->mode |= SYN_BIT_DISABLE_GESTURE;
203 if (SYN_CAP_EXTENDED(priv->capabilities))
204 priv->mode |= SYN_BIT_W_MODE;
205
206 if (synaptics_mode_cmd(psmouse, priv->mode))
207 return -1;
208
209 return 0;
210 }
211
212 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
213 {
214 struct synaptics_data *priv = psmouse->private;
215
216 if (rate >= 80) {
217 priv->mode |= SYN_BIT_HIGH_RATE;
218 psmouse->rate = 80;
219 } else {
220 priv->mode &= ~SYN_BIT_HIGH_RATE;
221 psmouse->rate = 40;
222 }
223
224 synaptics_mode_cmd(psmouse, priv->mode);
225 }
226
227 /*****************************************************************************
228 * Synaptics pass-through PS/2 port support
229 ****************************************************************************/
230 static int synaptics_pt_write(struct serio *serio, unsigned char c)
231 {
232 struct psmouse *parent = serio_get_drvdata(serio->parent);
233 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
234
235 if (psmouse_sliced_command(parent, c))
236 return -1;
237 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
238 return -1;
239 return 0;
240 }
241
242 static inline int synaptics_is_pt_packet(unsigned char *buf)
243 {
244 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
245 }
246
247 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
248 {
249 struct psmouse *child = serio_get_drvdata(ptport);
250
251 if (child && child->state == PSMOUSE_ACTIVATED) {
252 serio_interrupt(ptport, packet[1], 0, NULL);
253 serio_interrupt(ptport, packet[4], 0, NULL);
254 serio_interrupt(ptport, packet[5], 0, NULL);
255 if (child->type >= PSMOUSE_GENPS)
256 serio_interrupt(ptport, packet[2], 0, NULL);
257 } else
258 serio_interrupt(ptport, packet[1], 0, NULL);
259 }
260
261 static void synaptics_pt_activate(struct psmouse *psmouse)
262 {
263 struct serio *ptport = psmouse->ps2dev.serio->child;
264 struct psmouse *child = serio_get_drvdata(ptport);
265 struct synaptics_data *priv = psmouse->private;
266
267 /* adjust the touchpad to child's choice of protocol */
268 if (child) {
269 if (child->type >= PSMOUSE_GENPS)
270 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
271 else
272 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
273
274 if (synaptics_mode_cmd(psmouse, priv->mode))
275 printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
276 }
277 }
278
279 static void synaptics_pt_create(struct psmouse *psmouse)
280 {
281 struct serio *serio;
282
283 serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
284 if (!serio) {
285 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
286 return;
287 }
288
289 memset(serio, 0, sizeof(struct serio));
290
291 serio->id.type = SERIO_PS_PSTHRU;
292 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
293 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
294 serio->write = synaptics_pt_write;
295 serio->parent = psmouse->ps2dev.serio;
296
297 psmouse->pt_activate = synaptics_pt_activate;
298
299 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
300 serio_register_port(serio);
301 }
302
303 /*****************************************************************************
304 * Functions to interpret the absolute mode packets
305 ****************************************************************************/
306
307 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
308 {
309 memset(hw, 0, sizeof(struct synaptics_hw_state));
310
311 if (SYN_MODEL_NEWABS(priv->model_id)) {
312 hw->x = (((buf[3] & 0x10) << 8) |
313 ((buf[1] & 0x0f) << 8) |
314 buf[4]);
315 hw->y = (((buf[3] & 0x20) << 7) |
316 ((buf[1] & 0xf0) << 4) |
317 buf[5]);
318
319 hw->z = buf[2];
320 hw->w = (((buf[0] & 0x30) >> 2) |
321 ((buf[0] & 0x04) >> 1) |
322 ((buf[3] & 0x04) >> 2));
323
324 hw->left = (buf[0] & 0x01) ? 1 : 0;
325 hw->right = (buf[0] & 0x02) ? 1 : 0;
326
327 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
328 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
329 if (hw->w == 2)
330 hw->scroll = (signed char)(buf[1]);
331 }
332
333 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
334 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
335 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
336 }
337
338 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
339 ((buf[0] ^ buf[3]) & 0x02)) {
340 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
341 default:
342 /*
343 * if nExtBtn is greater than 8 it should be
344 * considered invalid and treated as 0
345 */
346 break;
347 case 8:
348 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
349 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
350 case 6:
351 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
352 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
353 case 4:
354 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
355 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
356 case 2:
357 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
358 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
359 }
360 }
361 } else {
362 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
363 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
364
365 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
366 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
367
368 hw->left = (buf[0] & 0x01) ? 1 : 0;
369 hw->right = (buf[0] & 0x02) ? 1 : 0;
370 }
371 }
372
373 /*
374 * called for each full received packet from the touchpad
375 */
376 static void synaptics_process_packet(struct psmouse *psmouse)
377 {
378 struct input_dev *dev = &psmouse->dev;
379 struct synaptics_data *priv = psmouse->private;
380 struct synaptics_hw_state hw;
381 int num_fingers;
382 int finger_width;
383 int i;
384
385 synaptics_parse_hw_state(psmouse->packet, priv, &hw);
386
387 if (hw.scroll) {
388 priv->scroll += hw.scroll;
389
390 while (priv->scroll >= 4) {
391 input_report_key(dev, BTN_BACK, !hw.down);
392 input_sync(dev);
393 input_report_key(dev, BTN_BACK, hw.down);
394 input_sync(dev);
395 priv->scroll -= 4;
396 }
397 while (priv->scroll <= -4) {
398 input_report_key(dev, BTN_FORWARD, !hw.up);
399 input_sync(dev);
400 input_report_key(dev, BTN_FORWARD, hw.up);
401 input_sync(dev);
402 priv->scroll += 4;
403 }
404 return;
405 }
406
407 if (hw.z > 0) {
408 num_fingers = 1;
409 finger_width = 5;
410 if (SYN_CAP_EXTENDED(priv->capabilities)) {
411 switch (hw.w) {
412 case 0 ... 1:
413 if (SYN_CAP_MULTIFINGER(priv->capabilities))
414 num_fingers = hw.w + 2;
415 break;
416 case 2:
417 if (SYN_MODEL_PEN(priv->model_id))
418 ; /* Nothing, treat a pen as a single finger */
419 break;
420 case 4 ... 15:
421 if (SYN_CAP_PALMDETECT(priv->capabilities))
422 finger_width = hw.w;
423 break;
424 }
425 }
426 } else {
427 num_fingers = 0;
428 finger_width = 0;
429 }
430
431 /* Post events
432 * BTN_TOUCH has to be first as mousedev relies on it when doing
433 * absolute -> relative conversion
434 */
435 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
436 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
437
438 if (hw.z > 0) {
439 input_report_abs(dev, ABS_X, hw.x);
440 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
441 }
442 input_report_abs(dev, ABS_PRESSURE, hw.z);
443
444 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
445 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
446 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
447 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
448
449 input_report_key(dev, BTN_LEFT, hw.left);
450 input_report_key(dev, BTN_RIGHT, hw.right);
451
452 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
453 input_report_key(dev, BTN_MIDDLE, hw.middle);
454
455 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
456 input_report_key(dev, BTN_FORWARD, hw.up);
457 input_report_key(dev, BTN_BACK, hw.down);
458 }
459
460 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
461 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
462
463 input_sync(dev);
464 }
465
466 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
467 {
468 static unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
469 static unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
470 static unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
471 static unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
472 static unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
473
474 if (idx < 0 || idx > 4)
475 return 0;
476
477 switch (pkt_type) {
478 case SYN_NEWABS:
479 case SYN_NEWABS_RELAXED:
480 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
481
482 case SYN_NEWABS_STRICT:
483 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
484
485 case SYN_OLDABS:
486 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
487
488 default:
489 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
490 return 0;
491 }
492 }
493
494 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
495 {
496 int i;
497
498 for (i = 0; i < 5; i++)
499 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
500 printk(KERN_INFO "synaptics: using relaxed packet validation\n");
501 return SYN_NEWABS_RELAXED;
502 }
503
504 return SYN_NEWABS_STRICT;
505 }
506
507 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
508 {
509 struct input_dev *dev = &psmouse->dev;
510 struct synaptics_data *priv = psmouse->private;
511
512 input_regs(dev, regs);
513
514 if (psmouse->pktcnt >= 6) { /* Full packet received */
515 if (unlikely(priv->pkt_type == SYN_NEWABS))
516 priv->pkt_type = synaptics_detect_pkt_type(psmouse);
517
518 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
519 if (psmouse->ps2dev.serio->child)
520 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
521 } else
522 synaptics_process_packet(psmouse);
523
524 return PSMOUSE_FULL_PACKET;
525 }
526
527 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
528 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
529 }
530
531 /*****************************************************************************
532 * Driver initialization/cleanup functions
533 ****************************************************************************/
534 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
535 {
536 int i;
537
538 set_bit(EV_ABS, dev->evbit);
539 input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
540 input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
541 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
542 set_bit(ABS_TOOL_WIDTH, dev->absbit);
543
544 set_bit(EV_KEY, dev->evbit);
545 set_bit(BTN_TOUCH, dev->keybit);
546 set_bit(BTN_TOOL_FINGER, dev->keybit);
547 set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
548 set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
549
550 set_bit(BTN_LEFT, dev->keybit);
551 set_bit(BTN_RIGHT, dev->keybit);
552
553 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
554 set_bit(BTN_MIDDLE, dev->keybit);
555
556 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
557 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
558 set_bit(BTN_FORWARD, dev->keybit);
559 set_bit(BTN_BACK, dev->keybit);
560 }
561
562 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
563 set_bit(BTN_0 + i, dev->keybit);
564
565 clear_bit(EV_REL, dev->evbit);
566 clear_bit(REL_X, dev->relbit);
567 clear_bit(REL_Y, dev->relbit);
568 }
569
570 void synaptics_reset(struct psmouse *psmouse)
571 {
572 /* reset touchpad back to relative mode, gestures enabled */
573 synaptics_mode_cmd(psmouse, 0);
574 }
575
576 static void synaptics_disconnect(struct psmouse *psmouse)
577 {
578 synaptics_reset(psmouse);
579 kfree(psmouse->private);
580 psmouse->private = NULL;
581 }
582
583 static int synaptics_reconnect(struct psmouse *psmouse)
584 {
585 struct synaptics_data *priv = psmouse->private;
586 struct synaptics_data old_priv = *priv;
587
588 if (synaptics_detect(psmouse, 0))
589 return -1;
590
591 if (synaptics_query_hardware(psmouse)) {
592 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
593 return -1;
594 }
595
596 if (old_priv.identity != priv->identity ||
597 old_priv.model_id != priv->model_id ||
598 old_priv.capabilities != priv->capabilities ||
599 old_priv.ext_cap != priv->ext_cap)
600 return -1;
601
602 if (synaptics_set_absolute_mode(psmouse)) {
603 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
604 return -1;
605 }
606
607 return 0;
608 }
609
610 int synaptics_detect(struct psmouse *psmouse, int set_properties)
611 {
612 struct ps2dev *ps2dev = &psmouse->ps2dev;
613 unsigned char param[4];
614
615 param[0] = 0;
616
617 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
618 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
619 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
620 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
621 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
622
623 if (param[1] != 0x47)
624 return -1;
625
626 if (set_properties) {
627 psmouse->vendor = "Synaptics";
628 psmouse->name = "TouchPad";
629 }
630
631 return 0;
632 }
633
634 #if defined(__i386__)
635 #include <linux/dmi.h>
636 static struct dmi_system_id toshiba_dmi_table[] = {
637 {
638 .ident = "Toshiba Satellite",
639 .matches = {
640 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
641 DMI_MATCH(DMI_PRODUCT_NAME , "Satellite"),
642 },
643 },
644 { }
645 };
646 #endif
647
648 int synaptics_init(struct psmouse *psmouse)
649 {
650 struct synaptics_data *priv;
651
652 psmouse->private = priv = kmalloc(sizeof(struct synaptics_data), GFP_KERNEL);
653 if (!priv)
654 return -1;
655 memset(priv, 0, sizeof(struct synaptics_data));
656
657 if (synaptics_query_hardware(psmouse)) {
658 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
659 goto init_fail;
660 }
661
662 if (synaptics_set_absolute_mode(psmouse)) {
663 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
664 goto init_fail;
665 }
666
667 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
668
669 print_ident(priv);
670 set_input_params(&psmouse->dev, priv);
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->pktsize = 6;
677
678 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
679 synaptics_pt_create(psmouse);
680
681 #if defined(__i386__)
682 /*
683 * Toshiba's KBC seems to have trouble handling data from
684 * Synaptics as full rate, switch to lower rate which is roughly
685 * thye same as rate of standard PS/2 mouse.
686 */
687 if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
688 printk(KERN_INFO "synaptics: Toshiba Satellite detected, limiting rate to 40pps.\n");
689 psmouse->rate = 40;
690 }
691 #endif
692
693 return 0;
694
695 init_fail:
696 kfree(priv);
697 return -1;
698 }
699
700
Verdex Pro support