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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> | |
7705d548 | 27 | #include <linux/dmi.h> |
1da177e4 LT |
28 | #include <linux/input.h> |
29 | #include <linux/serio.h> | |
30 | #include <linux/libps2.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
1da177e4 LT |
32 | #include "psmouse.h" |
33 | #include "synaptics.h" | |
34 | ||
35 | /* | |
36 | * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, | |
37 | * section 2.3.2, which says that they should be valid regardless of the | |
38 | * actual size of the sensor. | |
39 | */ | |
40 | #define XMIN_NOMINAL 1472 | |
41 | #define XMAX_NOMINAL 5472 | |
42 | #define YMIN_NOMINAL 1408 | |
43 | #define YMAX_NOMINAL 4448 | |
44 | ||
55e3d922 | 45 | |
1da177e4 | 46 | /***************************************************************************** |
55e3d922 | 47 | * Stuff we need even when we do not want native Synaptics support |
1da177e4 LT |
48 | ****************************************************************************/ |
49 | ||
50 | /* | |
55e3d922 | 51 | * Set the synaptics touchpad mode byte by special commands |
1da177e4 | 52 | */ |
55e3d922 | 53 | static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) |
1da177e4 | 54 | { |
55e3d922 AS |
55 | unsigned char param[1]; |
56 | ||
57 | if (psmouse_sliced_command(psmouse, mode)) | |
1da177e4 | 58 | return -1; |
55e3d922 AS |
59 | param[0] = SYN_PS_SET_MODE2; |
60 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) | |
1da177e4 LT |
61 | return -1; |
62 | return 0; | |
63 | } | |
64 | ||
b7802c5c | 65 | int synaptics_detect(struct psmouse *psmouse, bool set_properties) |
55e3d922 AS |
66 | { |
67 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
68 | unsigned char param[4]; | |
69 | ||
70 | param[0] = 0; | |
71 | ||
72 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
73 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
74 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
75 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
76 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
77 | ||
78 | if (param[1] != 0x47) | |
79 | return -ENODEV; | |
80 | ||
81 | if (set_properties) { | |
82 | psmouse->vendor = "Synaptics"; | |
83 | psmouse->name = "TouchPad"; | |
84 | } | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | void synaptics_reset(struct psmouse *psmouse) | |
90 | { | |
91 | /* reset touchpad back to relative mode, gestures enabled */ | |
92 | synaptics_mode_cmd(psmouse, 0); | |
93 | } | |
94 | ||
95 | #ifdef CONFIG_MOUSE_PS2_SYNAPTICS | |
96 | ||
97 | /***************************************************************************** | |
98 | * Synaptics communications functions | |
99 | ****************************************************************************/ | |
100 | ||
1da177e4 | 101 | /* |
55e3d922 | 102 | * Send a command to the synpatics touchpad by special commands |
1da177e4 | 103 | */ |
55e3d922 | 104 | static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) |
1da177e4 | 105 | { |
55e3d922 | 106 | if (psmouse_sliced_command(psmouse, c)) |
1da177e4 | 107 | return -1; |
55e3d922 | 108 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) |
1da177e4 LT |
109 | return -1; |
110 | return 0; | |
111 | } | |
112 | ||
113 | /* | |
114 | * Read the model-id bytes from the touchpad | |
115 | * see also SYN_MODEL_* macros | |
116 | */ | |
117 | static int synaptics_model_id(struct psmouse *psmouse) | |
118 | { | |
119 | struct synaptics_data *priv = psmouse->private; | |
120 | unsigned char mi[3]; | |
121 | ||
122 | if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) | |
123 | return -1; | |
124 | priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; | |
125 | return 0; | |
126 | } | |
127 | ||
128 | /* | |
129 | * Read the capability-bits from the touchpad | |
130 | * see also the SYN_CAP_* macros | |
131 | */ | |
132 | static int synaptics_capability(struct psmouse *psmouse) | |
133 | { | |
134 | struct synaptics_data *priv = psmouse->private; | |
135 | unsigned char cap[3]; | |
136 | ||
137 | if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) | |
138 | return -1; | |
139 | priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; | |
5f57d67d TI |
140 | priv->ext_cap = priv->ext_cap_0c = 0; |
141 | ||
1da177e4 LT |
142 | if (!SYN_CAP_VALID(priv->capabilities)) |
143 | return -1; | |
144 | ||
145 | /* | |
146 | * Unless capExtended is set the rest of the flags should be ignored | |
147 | */ | |
148 | if (!SYN_CAP_EXTENDED(priv->capabilities)) | |
149 | priv->capabilities = 0; | |
150 | ||
151 | if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { | |
152 | if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { | |
153 | printk(KERN_ERR "Synaptics claims to have extended capabilities," | |
5f57d67d | 154 | " but I'm not able to read them.\n"); |
1da177e4 LT |
155 | } else { |
156 | priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; | |
157 | ||
158 | /* | |
159 | * if nExtBtn is greater than 8 it should be considered | |
160 | * invalid and treated as 0 | |
161 | */ | |
162 | if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) | |
163 | priv->ext_cap &= 0xff0fff; | |
164 | } | |
165 | } | |
5f57d67d TI |
166 | |
167 | if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { | |
168 | if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { | |
169 | printk(KERN_ERR "Synaptics claims to have extended capability 0x0c," | |
170 | " but I'm not able to read it.\n"); | |
171 | } else { | |
172 | priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; | |
173 | } | |
174 | } | |
175 | ||
1da177e4 LT |
176 | return 0; |
177 | } | |
178 | ||
179 | /* | |
180 | * Identify Touchpad | |
181 | * See also the SYN_ID_* macros | |
182 | */ | |
183 | static int synaptics_identify(struct psmouse *psmouse) | |
184 | { | |
185 | struct synaptics_data *priv = psmouse->private; | |
186 | unsigned char id[3]; | |
187 | ||
188 | if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) | |
189 | return -1; | |
190 | priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; | |
191 | if (SYN_ID_IS_SYNAPTICS(priv->identity)) | |
192 | return 0; | |
193 | return -1; | |
194 | } | |
195 | ||
ec20a022 TS |
196 | /* |
197 | * Read touchpad resolution | |
198 | * Resolution is left zero if touchpad does not support the query | |
199 | */ | |
200 | static int synaptics_resolution(struct psmouse *psmouse) | |
201 | { | |
202 | struct synaptics_data *priv = psmouse->private; | |
203 | unsigned char res[3]; | |
204 | ||
205 | if (SYN_ID_MAJOR(priv->identity) < 4) | |
206 | return 0; | |
207 | ||
208 | if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res)) | |
209 | return 0; | |
210 | ||
211 | if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) { | |
212 | priv->x_res = res[0]; /* x resolution in units/mm */ | |
213 | priv->y_res = res[2]; /* y resolution in units/mm */ | |
214 | } | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
1da177e4 LT |
219 | static int synaptics_query_hardware(struct psmouse *psmouse) |
220 | { | |
1da177e4 LT |
221 | if (synaptics_identify(psmouse)) |
222 | return -1; | |
223 | if (synaptics_model_id(psmouse)) | |
224 | return -1; | |
225 | if (synaptics_capability(psmouse)) | |
226 | return -1; | |
ec20a022 TS |
227 | if (synaptics_resolution(psmouse)) |
228 | return -1; | |
1da177e4 LT |
229 | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static int synaptics_set_absolute_mode(struct psmouse *psmouse) | |
234 | { | |
235 | struct synaptics_data *priv = psmouse->private; | |
236 | ||
237 | priv->mode = SYN_BIT_ABSOLUTE_MODE; | |
238 | if (SYN_ID_MAJOR(priv->identity) >= 4) | |
239 | priv->mode |= SYN_BIT_DISABLE_GESTURE; | |
240 | if (SYN_CAP_EXTENDED(priv->capabilities)) | |
241 | priv->mode |= SYN_BIT_W_MODE; | |
242 | ||
243 | if (synaptics_mode_cmd(psmouse, priv->mode)) | |
244 | return -1; | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) | |
250 | { | |
251 | struct synaptics_data *priv = psmouse->private; | |
252 | ||
253 | if (rate >= 80) { | |
254 | priv->mode |= SYN_BIT_HIGH_RATE; | |
255 | psmouse->rate = 80; | |
256 | } else { | |
257 | priv->mode &= ~SYN_BIT_HIGH_RATE; | |
258 | psmouse->rate = 40; | |
259 | } | |
260 | ||
261 | synaptics_mode_cmd(psmouse, priv->mode); | |
262 | } | |
263 | ||
264 | /***************************************************************************** | |
265 | * Synaptics pass-through PS/2 port support | |
266 | ****************************************************************************/ | |
267 | static int synaptics_pt_write(struct serio *serio, unsigned char c) | |
268 | { | |
269 | struct psmouse *parent = serio_get_drvdata(serio->parent); | |
270 | char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ | |
271 | ||
272 | if (psmouse_sliced_command(parent, c)) | |
273 | return -1; | |
274 | if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) | |
275 | return -1; | |
276 | return 0; | |
277 | } | |
278 | ||
279 | static inline int synaptics_is_pt_packet(unsigned char *buf) | |
280 | { | |
281 | return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; | |
282 | } | |
283 | ||
284 | static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) | |
285 | { | |
286 | struct psmouse *child = serio_get_drvdata(ptport); | |
287 | ||
288 | if (child && child->state == PSMOUSE_ACTIVATED) { | |
7d12e780 DH |
289 | serio_interrupt(ptport, packet[1], 0); |
290 | serio_interrupt(ptport, packet[4], 0); | |
291 | serio_interrupt(ptport, packet[5], 0); | |
33fdfa97 | 292 | if (child->pktsize == 4) |
7d12e780 | 293 | serio_interrupt(ptport, packet[2], 0); |
1da177e4 | 294 | } else |
7d12e780 | 295 | serio_interrupt(ptport, packet[1], 0); |
1da177e4 LT |
296 | } |
297 | ||
298 | static void synaptics_pt_activate(struct psmouse *psmouse) | |
299 | { | |
300 | struct serio *ptport = psmouse->ps2dev.serio->child; | |
301 | struct psmouse *child = serio_get_drvdata(ptport); | |
302 | struct synaptics_data *priv = psmouse->private; | |
303 | ||
304 | /* adjust the touchpad to child's choice of protocol */ | |
305 | if (child) { | |
33fdfa97 | 306 | if (child->pktsize == 4) |
1da177e4 LT |
307 | priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; |
308 | else | |
309 | priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; | |
310 | ||
311 | if (synaptics_mode_cmd(psmouse, priv->mode)) | |
312 | printk(KERN_INFO "synaptics: failed to switch guest protocol\n"); | |
313 | } | |
314 | } | |
315 | ||
316 | static void synaptics_pt_create(struct psmouse *psmouse) | |
317 | { | |
318 | struct serio *serio; | |
319 | ||
b39787a9 | 320 | serio = kzalloc(sizeof(struct serio), GFP_KERNEL); |
1da177e4 LT |
321 | if (!serio) { |
322 | printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); | |
323 | return; | |
324 | } | |
325 | ||
1da177e4 LT |
326 | serio->id.type = SERIO_PS_PSTHRU; |
327 | strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); | |
328 | strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); | |
329 | serio->write = synaptics_pt_write; | |
330 | serio->parent = psmouse->ps2dev.serio; | |
331 | ||
332 | psmouse->pt_activate = synaptics_pt_activate; | |
333 | ||
334 | printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys); | |
335 | serio_register_port(serio); | |
336 | } | |
337 | ||
338 | /***************************************************************************** | |
339 | * Functions to interpret the absolute mode packets | |
340 | ****************************************************************************/ | |
341 | ||
342 | static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) | |
343 | { | |
344 | memset(hw, 0, sizeof(struct synaptics_hw_state)); | |
345 | ||
346 | if (SYN_MODEL_NEWABS(priv->model_id)) { | |
347 | hw->x = (((buf[3] & 0x10) << 8) | | |
348 | ((buf[1] & 0x0f) << 8) | | |
349 | buf[4]); | |
350 | hw->y = (((buf[3] & 0x20) << 7) | | |
351 | ((buf[1] & 0xf0) << 4) | | |
352 | buf[5]); | |
353 | ||
354 | hw->z = buf[2]; | |
355 | hw->w = (((buf[0] & 0x30) >> 2) | | |
356 | ((buf[0] & 0x04) >> 1) | | |
357 | ((buf[3] & 0x04) >> 2)); | |
358 | ||
359 | hw->left = (buf[0] & 0x01) ? 1 : 0; | |
360 | hw->right = (buf[0] & 0x02) ? 1 : 0; | |
361 | ||
5f57d67d TI |
362 | if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { |
363 | /* | |
364 | * Clickpad's button is transmitted as middle button, | |
365 | * however, since it is primary button, we will report | |
366 | * it as BTN_LEFT. | |
367 | */ | |
368 | hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; | |
369 | ||
370 | } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { | |
1da177e4 LT |
371 | hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; |
372 | if (hw->w == 2) | |
373 | hw->scroll = (signed char)(buf[1]); | |
374 | } | |
375 | ||
376 | if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { | |
377 | hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; | |
378 | hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; | |
379 | } | |
380 | ||
381 | if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && | |
382 | ((buf[0] ^ buf[3]) & 0x02)) { | |
383 | switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { | |
384 | default: | |
385 | /* | |
386 | * if nExtBtn is greater than 8 it should be | |
387 | * considered invalid and treated as 0 | |
388 | */ | |
389 | break; | |
390 | case 8: | |
391 | hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; | |
392 | hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; | |
393 | case 6: | |
394 | hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; | |
395 | hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; | |
396 | case 4: | |
397 | hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; | |
398 | hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; | |
399 | case 2: | |
400 | hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; | |
401 | hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; | |
402 | } | |
403 | } | |
404 | } else { | |
405 | hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); | |
406 | hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); | |
407 | ||
408 | hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); | |
409 | hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); | |
410 | ||
411 | hw->left = (buf[0] & 0x01) ? 1 : 0; | |
412 | hw->right = (buf[0] & 0x02) ? 1 : 0; | |
413 | } | |
414 | } | |
415 | ||
416 | /* | |
417 | * called for each full received packet from the touchpad | |
418 | */ | |
419 | static void synaptics_process_packet(struct psmouse *psmouse) | |
420 | { | |
2e5b636b | 421 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
422 | struct synaptics_data *priv = psmouse->private; |
423 | struct synaptics_hw_state hw; | |
424 | int num_fingers; | |
425 | int finger_width; | |
426 | int i; | |
427 | ||
428 | synaptics_parse_hw_state(psmouse->packet, priv, &hw); | |
429 | ||
430 | if (hw.scroll) { | |
431 | priv->scroll += hw.scroll; | |
432 | ||
433 | while (priv->scroll >= 4) { | |
434 | input_report_key(dev, BTN_BACK, !hw.down); | |
435 | input_sync(dev); | |
436 | input_report_key(dev, BTN_BACK, hw.down); | |
437 | input_sync(dev); | |
438 | priv->scroll -= 4; | |
439 | } | |
440 | while (priv->scroll <= -4) { | |
441 | input_report_key(dev, BTN_FORWARD, !hw.up); | |
442 | input_sync(dev); | |
443 | input_report_key(dev, BTN_FORWARD, hw.up); | |
444 | input_sync(dev); | |
445 | priv->scroll += 4; | |
446 | } | |
447 | return; | |
448 | } | |
449 | ||
450 | if (hw.z > 0) { | |
451 | num_fingers = 1; | |
452 | finger_width = 5; | |
453 | if (SYN_CAP_EXTENDED(priv->capabilities)) { | |
454 | switch (hw.w) { | |
455 | case 0 ... 1: | |
456 | if (SYN_CAP_MULTIFINGER(priv->capabilities)) | |
457 | num_fingers = hw.w + 2; | |
458 | break; | |
459 | case 2: | |
460 | if (SYN_MODEL_PEN(priv->model_id)) | |
461 | ; /* Nothing, treat a pen as a single finger */ | |
462 | break; | |
463 | case 4 ... 15: | |
464 | if (SYN_CAP_PALMDETECT(priv->capabilities)) | |
465 | finger_width = hw.w; | |
466 | break; | |
467 | } | |
468 | } | |
469 | } else { | |
470 | num_fingers = 0; | |
471 | finger_width = 0; | |
472 | } | |
473 | ||
474 | /* Post events | |
475 | * BTN_TOUCH has to be first as mousedev relies on it when doing | |
476 | * absolute -> relative conversion | |
477 | */ | |
478 | if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); | |
479 | if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); | |
480 | ||
481 | if (hw.z > 0) { | |
482 | input_report_abs(dev, ABS_X, hw.x); | |
483 | input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y); | |
484 | } | |
485 | input_report_abs(dev, ABS_PRESSURE, hw.z); | |
486 | ||
487 | input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); | |
488 | input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); | |
1da177e4 LT |
489 | input_report_key(dev, BTN_LEFT, hw.left); |
490 | input_report_key(dev, BTN_RIGHT, hw.right); | |
491 | ||
e42b6646 PH |
492 | if (SYN_CAP_MULTIFINGER(priv->capabilities)) { |
493 | input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); | |
494 | input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); | |
495 | } | |
496 | ||
1da177e4 LT |
497 | if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) |
498 | input_report_key(dev, BTN_MIDDLE, hw.middle); | |
499 | ||
500 | if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { | |
501 | input_report_key(dev, BTN_FORWARD, hw.up); | |
502 | input_report_key(dev, BTN_BACK, hw.down); | |
503 | } | |
504 | ||
505 | for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) | |
506 | input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i)); | |
507 | ||
508 | input_sync(dev); | |
509 | } | |
510 | ||
511 | static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type) | |
512 | { | |
e38de678 HD |
513 | static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; |
514 | static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; | |
515 | static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; | |
516 | static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; | |
517 | static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; | |
1da177e4 LT |
518 | |
519 | if (idx < 0 || idx > 4) | |
520 | return 0; | |
521 | ||
522 | switch (pkt_type) { | |
523 | case SYN_NEWABS: | |
524 | case SYN_NEWABS_RELAXED: | |
525 | return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; | |
526 | ||
527 | case SYN_NEWABS_STRICT: | |
528 | return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; | |
529 | ||
530 | case SYN_OLDABS: | |
531 | return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; | |
532 | ||
533 | default: | |
534 | printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type); | |
535 | return 0; | |
536 | } | |
537 | } | |
538 | ||
539 | static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) | |
540 | { | |
541 | int i; | |
542 | ||
543 | for (i = 0; i < 5; i++) | |
544 | if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) { | |
545 | printk(KERN_INFO "synaptics: using relaxed packet validation\n"); | |
546 | return SYN_NEWABS_RELAXED; | |
547 | } | |
548 | ||
549 | return SYN_NEWABS_STRICT; | |
550 | } | |
551 | ||
7d12e780 | 552 | static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) |
1da177e4 | 553 | { |
1da177e4 LT |
554 | struct synaptics_data *priv = psmouse->private; |
555 | ||
1da177e4 LT |
556 | if (psmouse->pktcnt >= 6) { /* Full packet received */ |
557 | if (unlikely(priv->pkt_type == SYN_NEWABS)) | |
558 | priv->pkt_type = synaptics_detect_pkt_type(psmouse); | |
559 | ||
560 | if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) { | |
561 | if (psmouse->ps2dev.serio->child) | |
562 | synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet); | |
563 | } else | |
564 | synaptics_process_packet(psmouse); | |
565 | ||
566 | return PSMOUSE_FULL_PACKET; | |
567 | } | |
568 | ||
569 | return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ? | |
570 | PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; | |
571 | } | |
572 | ||
573 | /***************************************************************************** | |
574 | * Driver initialization/cleanup functions | |
575 | ****************************************************************************/ | |
576 | static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) | |
577 | { | |
578 | int i; | |
579 | ||
b7802c5c | 580 | __set_bit(EV_ABS, dev->evbit); |
1da177e4 LT |
581 | input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0); |
582 | input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0); | |
583 | input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); | |
b7802c5c | 584 | __set_bit(ABS_TOOL_WIDTH, dev->absbit); |
1da177e4 | 585 | |
b7802c5c DT |
586 | __set_bit(EV_KEY, dev->evbit); |
587 | __set_bit(BTN_TOUCH, dev->keybit); | |
588 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
589 | __set_bit(BTN_LEFT, dev->keybit); | |
590 | __set_bit(BTN_RIGHT, dev->keybit); | |
1da177e4 | 591 | |
e42b6646 | 592 | if (SYN_CAP_MULTIFINGER(priv->capabilities)) { |
b7802c5c DT |
593 | __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); |
594 | __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); | |
e42b6646 PH |
595 | } |
596 | ||
1da177e4 | 597 | if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) |
b7802c5c | 598 | __set_bit(BTN_MIDDLE, dev->keybit); |
1da177e4 LT |
599 | |
600 | if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || | |
601 | SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { | |
b7802c5c DT |
602 | __set_bit(BTN_FORWARD, dev->keybit); |
603 | __set_bit(BTN_BACK, dev->keybit); | |
1da177e4 LT |
604 | } |
605 | ||
606 | for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) | |
b7802c5c | 607 | __set_bit(BTN_0 + i, dev->keybit); |
1da177e4 | 608 | |
b7802c5c DT |
609 | __clear_bit(EV_REL, dev->evbit); |
610 | __clear_bit(REL_X, dev->relbit); | |
611 | __clear_bit(REL_Y, dev->relbit); | |
ec20a022 TS |
612 | |
613 | dev->absres[ABS_X] = priv->x_res; | |
614 | dev->absres[ABS_Y] = priv->y_res; | |
5f57d67d TI |
615 | |
616 | if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { | |
617 | /* Clickpads report only left button */ | |
618 | __clear_bit(BTN_RIGHT, dev->keybit); | |
619 | __clear_bit(BTN_MIDDLE, dev->keybit); | |
620 | } | |
1da177e4 LT |
621 | } |
622 | ||
1da177e4 LT |
623 | static void synaptics_disconnect(struct psmouse *psmouse) |
624 | { | |
625 | synaptics_reset(psmouse); | |
626 | kfree(psmouse->private); | |
627 | psmouse->private = NULL; | |
628 | } | |
629 | ||
630 | static int synaptics_reconnect(struct psmouse *psmouse) | |
631 | { | |
632 | struct synaptics_data *priv = psmouse->private; | |
633 | struct synaptics_data old_priv = *priv; | |
634 | ||
4d368456 AW |
635 | psmouse_reset(psmouse); |
636 | ||
1da177e4 LT |
637 | if (synaptics_detect(psmouse, 0)) |
638 | return -1; | |
639 | ||
640 | if (synaptics_query_hardware(psmouse)) { | |
641 | printk(KERN_ERR "Unable to query Synaptics hardware.\n"); | |
642 | return -1; | |
643 | } | |
644 | ||
645 | if (old_priv.identity != priv->identity || | |
646 | old_priv.model_id != priv->model_id || | |
647 | old_priv.capabilities != priv->capabilities || | |
648 | old_priv.ext_cap != priv->ext_cap) | |
649 | return -1; | |
650 | ||
651 | if (synaptics_set_absolute_mode(psmouse)) { | |
652 | printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); | |
653 | return -1; | |
654 | } | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
7705d548 DT |
659 | static bool impaired_toshiba_kbc; |
660 | ||
661 | static const struct dmi_system_id __initconst toshiba_dmi_table[] = { | |
662 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1da177e4 | 663 | { |
9961e259 | 664 | /* Toshiba Satellite */ |
1da177e4 LT |
665 | .matches = { |
666 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
53a2670c | 667 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
1da177e4 LT |
668 | }, |
669 | }, | |
9ba5eaaf | 670 | { |
9961e259 | 671 | /* Toshiba Dynabook */ |
9ba5eaaf SH |
672 | .matches = { |
673 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
53a2670c RT |
674 | DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), |
675 | }, | |
676 | }, | |
677 | { | |
9961e259 | 678 | /* Toshiba Portege M300 */ |
53a2670c RT |
679 | .matches = { |
680 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
681 | DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), | |
9ba5eaaf | 682 | }, |
5f5eeff4 DT |
683 | |
684 | }, | |
685 | { | |
9961e259 | 686 | /* Toshiba Portege M300 */ |
5f5eeff4 DT |
687 | .matches = { |
688 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
689 | DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), | |
690 | DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), | |
691 | }, | |
692 | ||
9ba5eaaf | 693 | }, |
1da177e4 | 694 | { } |
1da177e4 | 695 | #endif |
7705d548 DT |
696 | }; |
697 | ||
698 | void __init synaptics_module_init(void) | |
699 | { | |
700 | impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); | |
701 | } | |
1da177e4 LT |
702 | |
703 | int synaptics_init(struct psmouse *psmouse) | |
704 | { | |
705 | struct synaptics_data *priv; | |
706 | ||
b39787a9 | 707 | psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); |
1da177e4 LT |
708 | if (!priv) |
709 | return -1; | |
1da177e4 | 710 | |
4d368456 AW |
711 | psmouse_reset(psmouse); |
712 | ||
1da177e4 LT |
713 | if (synaptics_query_hardware(psmouse)) { |
714 | printk(KERN_ERR "Unable to query Synaptics hardware.\n"); | |
715 | goto init_fail; | |
716 | } | |
717 | ||
718 | if (synaptics_set_absolute_mode(psmouse)) { | |
719 | printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); | |
720 | goto init_fail; | |
721 | } | |
722 | ||
723 | priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; | |
724 | ||
5f57d67d | 725 | printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", |
409b7506 DT |
726 | SYN_ID_MODEL(priv->identity), |
727 | SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), | |
5f57d67d | 728 | priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c); |
409b7506 | 729 | |
2e5b636b | 730 | set_input_params(psmouse->dev, priv); |
1da177e4 | 731 | |
887cc127 DT |
732 | /* |
733 | * Encode touchpad model so that it can be used to set | |
734 | * input device->id.version and be visible to userspace. | |
735 | * Because version is __u16 we have to drop something. | |
736 | * Hardware info bits seem to be good candidates as they | |
737 | * are documented to be for Synaptics corp. internal use. | |
738 | */ | |
739 | psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | | |
740 | (priv->model_id & 0x000000ff); | |
741 | ||
1da177e4 LT |
742 | psmouse->protocol_handler = synaptics_process_byte; |
743 | psmouse->set_rate = synaptics_set_rate; | |
744 | psmouse->disconnect = synaptics_disconnect; | |
745 | psmouse->reconnect = synaptics_reconnect; | |
a1cec061 | 746 | psmouse->cleanup = synaptics_reset; |
1da177e4 | 747 | psmouse->pktsize = 6; |
f0d5c6f4 DT |
748 | /* Synaptics can usually stay in sync without extra help */ |
749 | psmouse->resync_time = 0; | |
1da177e4 LT |
750 | |
751 | if (SYN_CAP_PASS_THROUGH(priv->capabilities)) | |
752 | synaptics_pt_create(psmouse); | |
753 | ||
1da177e4 LT |
754 | /* |
755 | * Toshiba's KBC seems to have trouble handling data from | |
756 | * Synaptics as full rate, switch to lower rate which is roughly | |
757 | * thye same as rate of standard PS/2 mouse. | |
758 | */ | |
7705d548 | 759 | if (psmouse->rate >= 80 && impaired_toshiba_kbc) { |
9ba5eaaf SH |
760 | printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", |
761 | dmi_get_system_info(DMI_PRODUCT_NAME)); | |
1da177e4 LT |
762 | psmouse->rate = 40; |
763 | } | |
1da177e4 LT |
764 | |
765 | return 0; | |
766 | ||
767 | init_fail: | |
768 | kfree(priv); | |
769 | return -1; | |
770 | } | |
771 | ||
e4e6efd2 DD |
772 | bool synaptics_supported(void) |
773 | { | |
774 | return true; | |
775 | } | |
776 | ||
55e3d922 AS |
777 | #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ |
778 | ||
7705d548 DT |
779 | void __init synaptics_module_init(void) |
780 | { | |
781 | } | |
782 | ||
55e3d922 AS |
783 | int synaptics_init(struct psmouse *psmouse) |
784 | { | |
785 | return -ENOSYS; | |
786 | } | |
787 | ||
e4e6efd2 DD |
788 | bool synaptics_supported(void) |
789 | { | |
790 | return false; | |
791 | } | |
792 | ||
55e3d922 | 793 | #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ |
1da177e4 | 794 |