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1da177e4 LT |
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 | ||
55e3d922 | 43 | |
1da177e4 | 44 | /***************************************************************************** |
55e3d922 | 45 | * Stuff we need even when we do not want native Synaptics support |
1da177e4 LT |
46 | ****************************************************************************/ |
47 | ||
48 | /* | |
55e3d922 | 49 | * Set the synaptics touchpad mode byte by special commands |
1da177e4 | 50 | */ |
55e3d922 | 51 | static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) |
1da177e4 | 52 | { |
55e3d922 AS |
53 | unsigned char param[1]; |
54 | ||
55 | if (psmouse_sliced_command(psmouse, mode)) | |
1da177e4 | 56 | return -1; |
55e3d922 AS |
57 | param[0] = SYN_PS_SET_MODE2; |
58 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) | |
1da177e4 LT |
59 | return -1; |
60 | return 0; | |
61 | } | |
62 | ||
55e3d922 AS |
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 | ||
1da177e4 | 99 | /* |
55e3d922 | 100 | * Send a command to the synpatics touchpad by special commands |
1da177e4 | 101 | */ |
55e3d922 | 102 | static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) |
1da177e4 | 103 | { |
55e3d922 | 104 | if (psmouse_sliced_command(psmouse, c)) |
1da177e4 | 105 | return -1; |
55e3d922 | 106 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) |
1da177e4 LT |
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 | ||
ec20a022 TS |
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 | ||
1da177e4 LT |
206 | static int synaptics_query_hardware(struct psmouse *psmouse) |
207 | { | |
1da177e4 LT |
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; | |
ec20a022 TS |
214 | if (synaptics_resolution(psmouse)) |
215 | return -1; | |
1da177e4 LT |
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) { | |
7d12e780 DH |
276 | serio_interrupt(ptport, packet[1], 0); |
277 | serio_interrupt(ptport, packet[4], 0); | |
278 | serio_interrupt(ptport, packet[5], 0); | |
33fdfa97 | 279 | if (child->pktsize == 4) |
7d12e780 | 280 | serio_interrupt(ptport, packet[2], 0); |
1da177e4 | 281 | } else |
7d12e780 | 282 | serio_interrupt(ptport, packet[1], 0); |
1da177e4 LT |
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) { | |
33fdfa97 | 293 | if (child->pktsize == 4) |
1da177e4 LT |
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 | ||
b39787a9 | 307 | serio = kzalloc(sizeof(struct serio), GFP_KERNEL); |
1da177e4 LT |
308 | if (!serio) { |
309 | printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); | |
310 | return; | |
311 | } | |
312 | ||
1da177e4 LT |
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 | { | |
2e5b636b | 400 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
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); | |
1da177e4 LT |
468 | input_report_key(dev, BTN_LEFT, hw.left); |
469 | input_report_key(dev, BTN_RIGHT, hw.right); | |
470 | ||
e42b6646 PH |
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 | ||
1da177e4 LT |
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 | { | |
e38de678 HD |
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 }; | |
1da177e4 LT |
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 | ||
7d12e780 | 531 | static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) |
1da177e4 | 532 | { |
1da177e4 LT |
533 | struct synaptics_data *priv = psmouse->private; |
534 | ||
1da177e4 LT |
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); | |
1da177e4 LT |
568 | set_bit(BTN_LEFT, dev->keybit); |
569 | set_bit(BTN_RIGHT, dev->keybit); | |
570 | ||
e42b6646 PH |
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 | ||
1da177e4 LT |
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); | |
ec20a022 TS |
591 | |
592 | dev->absres[ABS_X] = priv->x_res; | |
593 | dev->absres[ABS_Y] = priv->y_res; | |
1da177e4 LT |
594 | } |
595 | ||
1da177e4 LT |
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 | ||
4d368456 AW |
608 | psmouse_reset(psmouse); |
609 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
632 | #if defined(__i386__) |
633 | #include <linux/dmi.h> | |
1855256c | 634 | static const struct dmi_system_id toshiba_dmi_table[] = { |
1da177e4 LT |
635 | { |
636 | .ident = "Toshiba Satellite", | |
637 | .matches = { | |
638 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
53a2670c | 639 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
1da177e4 LT |
640 | }, |
641 | }, | |
9ba5eaaf SH |
642 | { |
643 | .ident = "Toshiba Dynabook", | |
644 | .matches = { | |
645 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
53a2670c RT |
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"), | |
9ba5eaaf SH |
654 | }, |
655 | }, | |
1da177e4 LT |
656 | { } |
657 | }; | |
658 | #endif | |
659 | ||
660 | int synaptics_init(struct psmouse *psmouse) | |
661 | { | |
662 | struct synaptics_data *priv; | |
663 | ||
b39787a9 | 664 | psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); |
1da177e4 LT |
665 | if (!priv) |
666 | return -1; | |
1da177e4 | 667 | |
4d368456 AW |
668 | psmouse_reset(psmouse); |
669 | ||
1da177e4 LT |
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 | ||
409b7506 DT |
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 | ||
2e5b636b | 687 | set_input_params(psmouse->dev, priv); |
1da177e4 | 688 | |
887cc127 DT |
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 | ||
1da177e4 LT |
699 | psmouse->protocol_handler = synaptics_process_byte; |
700 | psmouse->set_rate = synaptics_set_rate; | |
701 | psmouse->disconnect = synaptics_disconnect; | |
702 | psmouse->reconnect = synaptics_reconnect; | |
a1cec061 | 703 | psmouse->cleanup = synaptics_reset; |
1da177e4 | 704 | psmouse->pktsize = 6; |
f0d5c6f4 DT |
705 | /* Synaptics can usually stay in sync without extra help */ |
706 | psmouse->resync_time = 0; | |
1da177e4 LT |
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)) { | |
9ba5eaaf SH |
718 | printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", |
719 | dmi_get_system_info(DMI_PRODUCT_NAME)); | |
1da177e4 LT |
720 | psmouse->rate = 40; |
721 | } | |
722 | #endif | |
723 | ||
724 | return 0; | |
725 | ||
726 | init_fail: | |
727 | kfree(priv); | |
728 | return -1; | |
729 | } | |
730 | ||
55e3d922 AS |
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 */ | |
1da177e4 | 739 |