1 | /* $NetBSD: synaptics.c,v 1.33 2015/03/04 22:58:35 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2005, Steve C. Woodford |
5 | * Copyright (c) 2004, Ales Krenek |
6 | * Copyright (c) 2004, Kentaro A. Kurahone |
7 | * All rights reserved. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * |
13 | * * Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * * Redistributions in binary form must reproduce the above |
16 | * copyright notice, this list of conditions and the following |
17 | * disclaimer in the documentation and/or other materials provided |
18 | * with the distribution. |
19 | * * Neither the name of the authors nor the names of its |
20 | * contributors may be used to endorse or promote products derived |
21 | * from this software without specific prior written permission. |
22 | * |
23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
24 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
25 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
26 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
27 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
28 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
29 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
30 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
31 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
33 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | * |
36 | */ |
37 | |
38 | /* |
39 | * TODO: |
40 | * - Make the sysctl values per-instance instead of global. |
41 | * - Consider setting initial scaling factors at runtime according |
42 | * to the values returned by the 'Read Resolutions' command. |
43 | * - Support the serial protocol (we only support PS/2 for now) |
44 | * - Support auto-repeat for up/down button Z-axis emulation. |
45 | * - Maybe add some more gestures (can we use Palm support somehow?) |
46 | */ |
47 | |
48 | #include "opt_pms.h" |
49 | |
50 | #include <sys/cdefs.h> |
51 | __KERNEL_RCSID(0, "$NetBSD: synaptics.c,v 1.33 2015/03/04 22:58:35 christos Exp $" ); |
52 | |
53 | #include <sys/param.h> |
54 | #include <sys/systm.h> |
55 | #include <sys/device.h> |
56 | #include <sys/ioctl.h> |
57 | #include <sys/sysctl.h> |
58 | #include <sys/kernel.h> |
59 | #include <sys/proc.h> |
60 | |
61 | #include <sys/bus.h> |
62 | |
63 | #include <dev/pckbport/pckbportvar.h> |
64 | |
65 | #include <dev/pckbport/synapticsreg.h> |
66 | #include <dev/pckbport/synapticsvar.h> |
67 | |
68 | #include <dev/pckbport/pmsreg.h> |
69 | #include <dev/pckbport/pmsvar.h> |
70 | |
71 | #include <dev/wscons/wsconsio.h> |
72 | #include <dev/wscons/wsmousevar.h> |
73 | |
74 | /* |
75 | * Absolute-mode packets are decoded and passed around using |
76 | * the following structure. |
77 | */ |
78 | struct synaptics_packet { |
79 | signed short sp_x; /* Unscaled absolute X/Y coordinates */ |
80 | signed short sp_y; |
81 | u_char sp_z; /* Z (pressure) */ |
82 | u_char sp_w; /* W (contact patch width) */ |
83 | char sp_left; /* Left mouse button status */ |
84 | char sp_right; /* Right mouse button status */ |
85 | char sp_middle; /* Middle button status (possibly emulated) */ |
86 | char sp_up; /* Up button status */ |
87 | char sp_down; /* Down button status */ |
88 | }; |
89 | |
90 | static void pms_synaptics_input(void *, int); |
91 | static void pms_synaptics_process_packet(struct pms_softc *, |
92 | struct synaptics_packet *); |
93 | static void pms_sysctl_synaptics(struct sysctllog **); |
94 | static int pms_sysctl_synaptics_verify(SYSCTLFN_ARGS); |
95 | |
96 | /* Controlled by sysctl. */ |
97 | static int synaptics_up_down_emul = 2; |
98 | static int synaptics_up_down_motion_delta = 1; |
99 | static int synaptics_gesture_move = 200; |
100 | static int synaptics_gesture_length = 20; |
101 | static int synaptics_edge_left = SYNAPTICS_EDGE_LEFT; |
102 | static int synaptics_edge_right = SYNAPTICS_EDGE_RIGHT; |
103 | static int synaptics_edge_top = SYNAPTICS_EDGE_TOP; |
104 | static int synaptics_edge_bottom = SYNAPTICS_EDGE_BOTTOM; |
105 | static int synaptics_edge_motion_delta = 32; |
106 | static u_int synaptics_finger_high = SYNAPTICS_FINGER_LIGHT + 5; |
107 | static u_int synaptics_finger_low = SYNAPTICS_FINGER_LIGHT - 10; |
108 | static int synaptics_two_fingers_emul = 0; |
109 | static int synaptics_scale_x = 16; |
110 | static int synaptics_scale_y = 16; |
111 | static int synaptics_max_speed_x = 32; |
112 | static int synaptics_max_speed_y = 32; |
113 | static int synaptics_movement_threshold = 4; |
114 | |
115 | /* Sysctl nodes. */ |
116 | static int synaptics_up_down_emul_nodenum; |
117 | static int synaptics_up_down_motion_delta_nodenum; |
118 | static int synaptics_gesture_move_nodenum; |
119 | static int synaptics_gesture_length_nodenum; |
120 | static int synaptics_edge_left_nodenum; |
121 | static int synaptics_edge_right_nodenum; |
122 | static int synaptics_edge_top_nodenum; |
123 | static int synaptics_edge_bottom_nodenum; |
124 | static int synaptics_edge_motion_delta_nodenum; |
125 | static int synaptics_finger_high_nodenum; |
126 | static int synaptics_finger_low_nodenum; |
127 | static int synaptics_two_fingers_emul_nodenum; |
128 | static int synaptics_scale_x_nodenum; |
129 | static int synaptics_scale_y_nodenum; |
130 | static int synaptics_max_speed_x_nodenum; |
131 | static int synaptics_max_speed_y_nodenum; |
132 | static int synaptics_movement_threshold_nodenum; |
133 | |
134 | static void |
135 | pms_synaptics_probe_extended(struct pms_softc *psc) |
136 | { |
137 | struct synaptics_softc *sc = &psc->u.synaptics; |
138 | u_char cmd[1], resp[3]; |
139 | int res; |
140 | |
141 | aprint_debug_dev(psc->sc_dev, |
142 | "synaptics_probe: Capabilities 0x%04x.\n" , sc->caps); |
143 | if (sc->caps & SYNAPTICS_CAP_PASSTHROUGH) |
144 | sc->flags |= SYN_FLAG_HAS_PASSTHROUGH; |
145 | |
146 | if (sc->caps & SYNAPTICS_CAP_PALMDETECT) |
147 | sc->flags |= SYN_FLAG_HAS_PALM_DETECT; |
148 | |
149 | if (sc->caps & SYNAPTICS_CAP_MULTIDETECT) |
150 | sc->flags |= SYN_FLAG_HAS_MULTI_FINGER; |
151 | |
152 | if (sc->caps & SYNAPTICS_CAP_MULTIFINGERREPORT) |
153 | sc->flags |= SYN_FLAG_HAS_MULTI_FINGER_REPORT; |
154 | |
155 | /* Ask about extra buttons to detect up/down. */ |
156 | if (((sc->caps & SYNAPTICS_CAP_EXTNUM) + 0x08) |
157 | >= SYNAPTICS_EXTENDED_QUERY) |
158 | { |
159 | res = pms_sliced_command(psc->sc_kbctag, |
160 | psc->sc_kbcslot, SYNAPTICS_EXTENDED_QUERY); |
161 | cmd[0] = PMS_SEND_DEV_STATUS; |
162 | res |= pckbport_poll_cmd(psc->sc_kbctag, |
163 | psc->sc_kbcslot, cmd, 1, 3, resp, 0); |
164 | if (res == 0) { |
165 | int buttons = (resp[1] >> 4); |
166 | aprint_debug_dev(psc->sc_dev, |
167 | "%s: Extended Buttons: %d.\n" , __func__, buttons); |
168 | |
169 | aprint_debug_dev(psc->sc_dev, "%s: Extended " |
170 | "Capabilities: 0x%02x 0x%02x 0x%02x.\n" , __func__, |
171 | resp[0], resp[1], resp[2]); |
172 | if (buttons >= 2) { |
173 | /* Yes. */ |
174 | sc->flags |= SYN_FLAG_HAS_UP_DOWN_BUTTONS; |
175 | } |
176 | if (resp[0] & 0x1) { |
177 | /* Vertical scroll area */ |
178 | sc->flags |= SYN_FLAG_HAS_VERTICAL_SCROLL; |
179 | } |
180 | if (resp[0] & 0x2) { |
181 | /* Horizontal scroll area */ |
182 | sc->flags |= SYN_FLAG_HAS_HORIZONTAL_SCROLL; |
183 | } |
184 | if (resp[0] & 0x4) { |
185 | /* Extended W-Mode */ |
186 | sc->flags |= SYN_FLAG_HAS_EXTENDED_WMODE; |
187 | } |
188 | } |
189 | } |
190 | |
191 | /* Ask about click pad */ |
192 | if (((sc->caps & SYNAPTICS_CAP_EXTNUM) + 0x08) >= |
193 | SYNAPTICS_CONTINUED_CAPABILITIES) |
194 | { |
195 | res = pms_sliced_command(psc->sc_kbctag, |
196 | psc->sc_kbcslot, SYNAPTICS_CONTINUED_CAPABILITIES); |
197 | cmd[0] = PMS_SEND_DEV_STATUS; |
198 | res |= pckbport_poll_cmd(psc->sc_kbctag, |
199 | psc->sc_kbcslot, cmd, 1, 3, resp, 0); |
200 | /* |
201 | * The following describes response for the |
202 | * SYNAPTICS_CONTINUED_CAPABILITIES query. |
203 | * |
204 | * byte mask name meaning |
205 | * ---- ---- ------- ------------ |
206 | * 0 0x01 adjustable threshold capacitive button sensitivity |
207 | * can be adjusted |
208 | * 0 0x02 report max query 0x0d gives max coord reported |
209 | * 0 0x04 clearpad sensor is ClearPad product |
210 | * 0 0x08 advanced gesture not particularly meaningful |
211 | * 0 0x10 clickpad bit 0 1-button ClickPad |
212 | * 0 0x60 multifinger mode identifies firmware finger counting |
213 | * (not reporting!) algorithm. |
214 | * Not particularly meaningful |
215 | * 0 0x80 covered pad W clipped to 14, 15 == pad mostly covered |
216 | * 1 0x01 clickpad bit 1 2-button ClickPad |
217 | * 1 0x02 deluxe LED controls touchpad support LED commands |
218 | * ala multimedia control bar |
219 | * 1 0x04 reduced filtering firmware does less filtering on |
220 | * position data, driver should watch |
221 | * for noise. |
222 | * 1 0x08 image sensor image sensor tracks 5 fingers, but only |
223 | * reports 2. |
224 | * 1 0x01 uniform clickpad whole clickpad moves instead of being |
225 | * hinged at the top. |
226 | * 1 0x20 report min query 0x0f gives min coord reported |
227 | */ |
228 | if (res == 0) { |
229 | u_char clickpad_type = (resp[0] & 0x10); |
230 | clickpad_type |= (resp[1] & 0x01); |
231 | |
232 | aprint_debug_dev(psc->sc_dev, "%s: Continued " |
233 | "Capabilities 0x%02x 0x%02x 0x%02x.\n" , __func__, |
234 | resp[0], resp[1], resp[2]); |
235 | switch (clickpad_type) { |
236 | case 0x10: |
237 | sc->flags |= SYN_FLAG_HAS_ONE_BUTTON_CLICKPAD; |
238 | break; |
239 | case 0x01: |
240 | sc->flags |= SYN_FLAG_HAS_TWO_BUTTON_CLICKPAD; |
241 | break; |
242 | default: |
243 | break; |
244 | } |
245 | } |
246 | } |
247 | } |
248 | |
249 | int |
250 | pms_synaptics_probe_init(void *vsc) |
251 | { |
252 | struct pms_softc *psc = vsc; |
253 | struct synaptics_softc *sc = &psc->u.synaptics; |
254 | u_char cmd[1], resp[3]; |
255 | int res, ver_minor, ver_major; |
256 | struct sysctllog *clog = NULL; |
257 | |
258 | res = pms_sliced_command(psc->sc_kbctag, psc->sc_kbcslot, |
259 | SYNAPTICS_IDENTIFY_TOUCHPAD); |
260 | cmd[0] = PMS_SEND_DEV_STATUS; |
261 | res |= pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 3, |
262 | resp, 0); |
263 | if (res) { |
264 | aprint_debug_dev(psc->sc_dev, |
265 | "synaptics_probe: Identify Touchpad error.\n" ); |
266 | /* |
267 | * Reset device in case the probe confused it. |
268 | */ |
269 | doreset: |
270 | cmd[0] = PMS_RESET; |
271 | (void) pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, |
272 | 1, 2, resp, 1); |
273 | return (res); |
274 | } |
275 | |
276 | if (resp[1] != SYNAPTICS_MAGIC_BYTE) { |
277 | aprint_debug_dev(psc->sc_dev, |
278 | "synaptics_probe: Not synaptics.\n" ); |
279 | res = 1; |
280 | goto doreset; |
281 | } |
282 | |
283 | sc->flags = 0; |
284 | |
285 | /* Check for minimum version and print a nice message. */ |
286 | ver_major = resp[2] & 0x0f; |
287 | ver_minor = resp[0]; |
288 | aprint_normal_dev(psc->sc_dev, "Synaptics touchpad version %d.%d\n" , |
289 | ver_major, ver_minor); |
290 | if (ver_major * 10 + ver_minor < SYNAPTICS_MIN_VERSION) { |
291 | /* No capability query support. */ |
292 | sc->caps = 0; |
293 | goto done; |
294 | } |
295 | |
296 | /* Query the hardware capabilities. */ |
297 | res = pms_sliced_command(psc->sc_kbctag, psc->sc_kbcslot, |
298 | SYNAPTICS_READ_CAPABILITIES); |
299 | cmd[0] = PMS_SEND_DEV_STATUS; |
300 | res |= pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 3, |
301 | resp, 0); |
302 | if (res) { |
303 | /* Hmm, failed to get capabilites. */ |
304 | aprint_error_dev(psc->sc_dev, |
305 | "synaptics_probe: Failed to query capabilities.\n" ); |
306 | goto doreset; |
307 | } |
308 | |
309 | sc->caps = (resp[0] << 8) | resp[2]; |
310 | |
311 | if (sc->caps & SYNAPTICS_CAP_MBUTTON) |
312 | sc->flags |= SYN_FLAG_HAS_MIDDLE_BUTTON; |
313 | |
314 | if (sc->caps & SYNAPTICS_CAP_4BUTTON) |
315 | sc->flags |= SYN_FLAG_HAS_BUTTONS_4_5; |
316 | |
317 | if (sc->caps & SYNAPTICS_CAP_EXTENDED) { |
318 | pms_synaptics_probe_extended(psc); |
319 | } |
320 | |
321 | if (sc->flags) { |
322 | const char comma[] = ", " ; |
323 | const char *sep = "" ; |
324 | aprint_normal_dev(psc->sc_dev, "" ); |
325 | if (sc->flags & SYN_FLAG_HAS_EXTENDED_WMODE) { |
326 | aprint_normal("%sExtended W mode" , sep); |
327 | sep = comma; |
328 | } |
329 | if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) { |
330 | aprint_normal("%sPassthrough" , sep); |
331 | sep = comma; |
332 | } |
333 | if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { |
334 | aprint_normal("%sMiddle button" , sep); |
335 | sep = comma; |
336 | } |
337 | if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { |
338 | aprint_normal("%sButtons 4/5" , sep); |
339 | sep = comma; |
340 | } |
341 | if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS) { |
342 | aprint_normal("%sUp/down buttons" , sep); |
343 | sep = comma; |
344 | } |
345 | if (sc->flags & SYN_FLAG_HAS_PALM_DETECT) { |
346 | aprint_normal("%sPalm detect" , sep); |
347 | sep = comma; |
348 | } |
349 | if (sc->flags & SYN_FLAG_HAS_ONE_BUTTON_CLICKPAD) { |
350 | aprint_normal("%sOne button click pad" , sep); |
351 | sep = comma; |
352 | } |
353 | if (sc->flags & SYN_FLAG_HAS_TWO_BUTTON_CLICKPAD) { |
354 | aprint_normal("%sTwo button click pad" , sep); |
355 | sep = comma; |
356 | } |
357 | if (sc->flags & SYN_FLAG_HAS_VERTICAL_SCROLL) { |
358 | aprint_normal("%sVertical scroll" , sep); |
359 | sep = comma; |
360 | } |
361 | if (sc->flags & SYN_FLAG_HAS_HORIZONTAL_SCROLL) { |
362 | aprint_normal("%sHorizontal scroll" , sep); |
363 | sep = comma; |
364 | } |
365 | if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER_REPORT) { |
366 | aprint_normal("%sMulti-finger Report" , sep); |
367 | sep = comma; |
368 | } |
369 | if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER) |
370 | aprint_normal("%sMulti-finger" , sep); |
371 | |
372 | aprint_normal("\n" ); |
373 | } |
374 | |
375 | done: |
376 | pms_sysctl_synaptics(&clog); |
377 | pckbport_set_inputhandler(psc->sc_kbctag, psc->sc_kbcslot, |
378 | pms_synaptics_input, psc, device_xname(psc->sc_dev)); |
379 | |
380 | return (0); |
381 | } |
382 | |
383 | void |
384 | pms_synaptics_enable(void *vsc) |
385 | { |
386 | struct pms_softc *psc = vsc; |
387 | struct synaptics_softc *sc = &psc->u.synaptics; |
388 | u_char cmd[2], resp[2]; |
389 | int res; |
390 | |
391 | if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) { |
392 | /* |
393 | * Extended capability probes can confuse the passthrough device; |
394 | * reset the touchpad now to cure that. |
395 | */ |
396 | cmd[0] = PMS_RESET; |
397 | res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, |
398 | 1, 2, resp, 1); |
399 | } |
400 | |
401 | /* |
402 | * Enable Absolute mode with W (width) reporting, and set |
403 | * the packet rate to maximum (80 packets per second). |
404 | */ |
405 | res = pms_sliced_command(psc->sc_kbctag, psc->sc_kbcslot, |
406 | SYNAPTICS_MODE_ABSOLUTE | SYNAPTICS_MODE_W | SYNAPTICS_MODE_RATE); |
407 | cmd[0] = PMS_SET_SAMPLE; |
408 | cmd[1] = SYNAPTICS_CMD_SET_MODE2; |
409 | res |= pckbport_enqueue_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 2, 0, |
410 | 1, NULL); |
411 | sc->up_down = 0; |
412 | sc->prev_fingers = 0; |
413 | sc->gesture_start_x = sc->gesture_start_y = 0; |
414 | sc->gesture_start_packet = 0; |
415 | sc->gesture_tap_packet = 0; |
416 | sc->gesture_type = 0; |
417 | sc->gesture_buttons = 0; |
418 | sc->rem_x = sc->rem_y = 0; |
419 | sc->movement_history = 0; |
420 | if (res) { |
421 | aprint_error_dev(psc->sc_dev, |
422 | "synaptics_enable: Error enabling device.\n" ); |
423 | } |
424 | } |
425 | |
426 | void |
427 | pms_synaptics_resume(void *vsc) |
428 | { |
429 | struct pms_softc *psc = vsc; |
430 | unsigned char cmd[1],resp[2] = { 0,0 }; |
431 | int res; |
432 | |
433 | cmd[0] = PMS_RESET; |
434 | res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 2, |
435 | resp, 1); |
436 | aprint_debug_dev(psc->sc_dev, |
437 | "pms_synaptics_resume: reset on resume %d 0x%02x 0x%02x\n" , |
438 | res, resp[0], resp[1]); |
439 | } |
440 | |
441 | static void |
442 | pms_sysctl_synaptics(struct sysctllog **clog) |
443 | { |
444 | int rc, root_num; |
445 | const struct sysctlnode *node; |
446 | |
447 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
448 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "synaptics" , |
449 | SYSCTL_DESCR("Synaptics touchpad controls" ), |
450 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) |
451 | goto err; |
452 | |
453 | root_num = node->sysctl_num; |
454 | |
455 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
456 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
457 | CTLTYPE_INT, "up_down_emulation" , |
458 | SYSCTL_DESCR("Middle button/Z-axis emulation with up/down buttons" ), |
459 | pms_sysctl_synaptics_verify, 0, |
460 | &synaptics_up_down_emul, |
461 | 0, CTL_HW, root_num, CTL_CREATE, |
462 | CTL_EOL)) != 0) |
463 | goto err; |
464 | |
465 | synaptics_up_down_emul_nodenum = node->sysctl_num; |
466 | |
467 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
468 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
469 | CTLTYPE_INT, "up_down_motion_delta" , |
470 | SYSCTL_DESCR("Up/down button Z-axis emulation rate" ), |
471 | pms_sysctl_synaptics_verify, 0, |
472 | &synaptics_up_down_motion_delta, |
473 | 0, CTL_HW, root_num, CTL_CREATE, |
474 | CTL_EOL)) != 0) |
475 | goto err; |
476 | |
477 | synaptics_up_down_motion_delta_nodenum = node->sysctl_num; |
478 | |
479 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
480 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
481 | CTLTYPE_INT, "gesture_move" , |
482 | SYSCTL_DESCR("Movement greater than this between taps cancels gesture" ), |
483 | pms_sysctl_synaptics_verify, 0, |
484 | &synaptics_gesture_move, |
485 | 0, CTL_HW, root_num, CTL_CREATE, |
486 | CTL_EOL)) != 0) |
487 | goto err; |
488 | |
489 | synaptics_gesture_move_nodenum = node->sysctl_num; |
490 | |
491 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
492 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
493 | CTLTYPE_INT, "gesture_length" , |
494 | SYSCTL_DESCR("Time period in which tap is recognised as a gesture" ), |
495 | pms_sysctl_synaptics_verify, 0, |
496 | &synaptics_gesture_length, |
497 | 0, CTL_HW, root_num, CTL_CREATE, |
498 | CTL_EOL)) != 0) |
499 | goto err; |
500 | |
501 | synaptics_gesture_length_nodenum = node->sysctl_num; |
502 | |
503 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
504 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
505 | CTLTYPE_INT, "edge_left" , |
506 | SYSCTL_DESCR("Define left edge of touchpad" ), |
507 | pms_sysctl_synaptics_verify, 0, |
508 | &synaptics_edge_left, |
509 | 0, CTL_HW, root_num, CTL_CREATE, |
510 | CTL_EOL)) != 0) |
511 | goto err; |
512 | |
513 | synaptics_edge_left_nodenum = node->sysctl_num; |
514 | |
515 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
516 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
517 | CTLTYPE_INT, "edge_right" , |
518 | SYSCTL_DESCR("Define right edge of touchpad" ), |
519 | pms_sysctl_synaptics_verify, 0, |
520 | &synaptics_edge_right, |
521 | 0, CTL_HW, root_num, CTL_CREATE, |
522 | CTL_EOL)) != 0) |
523 | goto err; |
524 | |
525 | synaptics_edge_right_nodenum = node->sysctl_num; |
526 | |
527 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
528 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
529 | CTLTYPE_INT, "edge_top" , |
530 | SYSCTL_DESCR("Define top edge of touchpad" ), |
531 | pms_sysctl_synaptics_verify, 0, |
532 | &synaptics_edge_top, |
533 | 0, CTL_HW, root_num, CTL_CREATE, |
534 | CTL_EOL)) != 0) |
535 | goto err; |
536 | |
537 | synaptics_edge_top_nodenum = node->sysctl_num; |
538 | |
539 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
540 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
541 | CTLTYPE_INT, "edge_bottom" , |
542 | SYSCTL_DESCR("Define bottom edge of touchpad" ), |
543 | pms_sysctl_synaptics_verify, 0, |
544 | &synaptics_edge_bottom, |
545 | 0, CTL_HW, root_num, CTL_CREATE, |
546 | CTL_EOL)) != 0) |
547 | goto err; |
548 | |
549 | synaptics_edge_bottom_nodenum = node->sysctl_num; |
550 | |
551 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
552 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
553 | CTLTYPE_INT, "edge_motion_delta" , |
554 | SYSCTL_DESCR("Define edge motion rate" ), |
555 | pms_sysctl_synaptics_verify, 0, |
556 | &synaptics_edge_motion_delta, |
557 | 0, CTL_HW, root_num, CTL_CREATE, |
558 | CTL_EOL)) != 0) |
559 | goto err; |
560 | |
561 | synaptics_edge_motion_delta_nodenum = node->sysctl_num; |
562 | |
563 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
564 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
565 | CTLTYPE_INT, "finger_high" , |
566 | SYSCTL_DESCR("Define finger applied pressure threshold" ), |
567 | pms_sysctl_synaptics_verify, 0, |
568 | &synaptics_finger_high, |
569 | 0, CTL_HW, root_num, CTL_CREATE, |
570 | CTL_EOL)) != 0) |
571 | goto err; |
572 | |
573 | synaptics_finger_high_nodenum = node->sysctl_num; |
574 | |
575 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
576 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
577 | CTLTYPE_INT, "finger_low" , |
578 | SYSCTL_DESCR("Define finger removed pressure threshold" ), |
579 | pms_sysctl_synaptics_verify, 0, |
580 | &synaptics_finger_low, |
581 | 0, CTL_HW, root_num, CTL_CREATE, |
582 | CTL_EOL)) != 0) |
583 | goto err; |
584 | |
585 | synaptics_finger_low_nodenum = node->sysctl_num; |
586 | |
587 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
588 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
589 | CTLTYPE_INT, "two_fingers_emulation" , |
590 | SYSCTL_DESCR("Map two fingers to middle button" ), |
591 | pms_sysctl_synaptics_verify, 0, |
592 | &synaptics_two_fingers_emul, |
593 | 0, CTL_HW, root_num, CTL_CREATE, |
594 | CTL_EOL)) != 0) |
595 | goto err; |
596 | |
597 | synaptics_two_fingers_emul_nodenum = node->sysctl_num; |
598 | |
599 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
600 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
601 | CTLTYPE_INT, "scale_x" , |
602 | SYSCTL_DESCR("Horizontal movement scale factor" ), |
603 | pms_sysctl_synaptics_verify, 0, |
604 | &synaptics_scale_x, |
605 | 0, CTL_HW, root_num, CTL_CREATE, |
606 | CTL_EOL)) != 0) |
607 | goto err; |
608 | |
609 | synaptics_scale_x_nodenum = node->sysctl_num; |
610 | |
611 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
612 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
613 | CTLTYPE_INT, "scale_y" , |
614 | SYSCTL_DESCR("Vertical movement scale factor" ), |
615 | pms_sysctl_synaptics_verify, 0, |
616 | &synaptics_scale_y, |
617 | 0, CTL_HW, root_num, CTL_CREATE, |
618 | CTL_EOL)) != 0) |
619 | goto err; |
620 | |
621 | synaptics_scale_y_nodenum = node->sysctl_num; |
622 | |
623 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
624 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
625 | CTLTYPE_INT, "max_speed_x" , |
626 | SYSCTL_DESCR("Horizontal movement maximum speed" ), |
627 | pms_sysctl_synaptics_verify, 0, |
628 | &synaptics_max_speed_x, |
629 | 0, CTL_HW, root_num, CTL_CREATE, |
630 | CTL_EOL)) != 0) |
631 | goto err; |
632 | |
633 | synaptics_max_speed_x_nodenum = node->sysctl_num; |
634 | |
635 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
636 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
637 | CTLTYPE_INT, "max_speed_y" , |
638 | SYSCTL_DESCR("Vertical movement maximum speed" ), |
639 | pms_sysctl_synaptics_verify, 0, |
640 | &synaptics_max_speed_y, |
641 | 0, CTL_HW, root_num, CTL_CREATE, |
642 | CTL_EOL)) != 0) |
643 | goto err; |
644 | |
645 | synaptics_max_speed_y_nodenum = node->sysctl_num; |
646 | |
647 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
648 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, |
649 | CTLTYPE_INT, "movement_threshold" , |
650 | SYSCTL_DESCR("Minimum reported movement threshold" ), |
651 | pms_sysctl_synaptics_verify, 0, |
652 | &synaptics_movement_threshold, |
653 | 0, CTL_HW, root_num, CTL_CREATE, |
654 | CTL_EOL)) != 0) |
655 | goto err; |
656 | |
657 | synaptics_movement_threshold_nodenum = node->sysctl_num; |
658 | return; |
659 | |
660 | err: |
661 | aprint_error("%s: sysctl_createv failed (rc = %d)\n" , __func__, rc); |
662 | } |
663 | |
664 | static int |
665 | pms_sysctl_synaptics_verify(SYSCTLFN_ARGS) |
666 | { |
667 | int error, t; |
668 | struct sysctlnode node; |
669 | |
670 | node = *rnode; |
671 | t = *(int *)rnode->sysctl_data; |
672 | node.sysctl_data = &t; |
673 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
674 | if (error || newp == NULL) |
675 | return error; |
676 | |
677 | /* Sanity check the params. */ |
678 | if (node.sysctl_num == synaptics_up_down_emul_nodenum || |
679 | node.sysctl_num == synaptics_two_fingers_emul_nodenum) { |
680 | if (t < 0 || t > 2) |
681 | return (EINVAL); |
682 | } else |
683 | if (node.sysctl_num == synaptics_gesture_length_nodenum || |
684 | node.sysctl_num == synaptics_edge_motion_delta_nodenum || |
685 | node.sysctl_num == synaptics_up_down_motion_delta_nodenum) { |
686 | if (t < 0) |
687 | return (EINVAL); |
688 | } else |
689 | if (node.sysctl_num == synaptics_edge_left_nodenum || |
690 | node.sysctl_num == synaptics_edge_bottom_nodenum) { |
691 | if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 2)) |
692 | return (EINVAL); |
693 | } else |
694 | if (node.sysctl_num == synaptics_edge_right_nodenum || |
695 | node.sysctl_num == synaptics_edge_top_nodenum) { |
696 | if (t < (SYNAPTICS_EDGE_MAX / 2)) |
697 | return (EINVAL); |
698 | } else |
699 | if (node.sysctl_num == synaptics_scale_x_nodenum || |
700 | node.sysctl_num == synaptics_scale_y_nodenum) { |
701 | if (t < 1 || t > (SYNAPTICS_EDGE_MAX / 4)) |
702 | return (EINVAL); |
703 | } else |
704 | if (node.sysctl_num == synaptics_finger_high_nodenum) { |
705 | if (t < 0 || t > SYNAPTICS_FINGER_PALM || |
706 | t < synaptics_finger_low) |
707 | return (EINVAL); |
708 | } else |
709 | if (node.sysctl_num == synaptics_finger_low_nodenum) { |
710 | if (t < 0 || t > SYNAPTICS_FINGER_PALM || |
711 | t > synaptics_finger_high) |
712 | return (EINVAL); |
713 | } else |
714 | if (node.sysctl_num == synaptics_gesture_move_nodenum || |
715 | node.sysctl_num == synaptics_movement_threshold_nodenum) { |
716 | if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 4)) |
717 | return (EINVAL); |
718 | } else |
719 | return (EINVAL); |
720 | |
721 | *(int *)rnode->sysctl_data = t; |
722 | |
723 | return (0); |
724 | } |
725 | |
726 | /* Masks for the first byte of a packet */ |
727 | #define PMS_LBUTMASK 0x01 |
728 | #define PMS_RBUTMASK 0x02 |
729 | #define PMS_MBUTMASK 0x04 |
730 | |
731 | static void |
732 | pms_synaptics_parse(struct pms_softc *psc) |
733 | { |
734 | struct synaptics_softc *sc = &psc->u.synaptics; |
735 | struct synaptics_packet sp; |
736 | |
737 | memset(&sp, 0, sizeof(sp)); |
738 | |
739 | /* Absolute X/Y coordinates of finger */ |
740 | sp.sp_x = psc->packet[4] + ((psc->packet[1] & 0x0f) << 8) + |
741 | ((psc->packet[3] & 0x10) << 8); |
742 | sp.sp_y = psc->packet[5] + ((psc->packet[1] & 0xf0) << 4) + |
743 | ((psc->packet[3] & 0x20) << 7); |
744 | |
745 | /* Pressure */ |
746 | sp.sp_z = psc->packet[2]; |
747 | |
748 | /* Width of finger */ |
749 | sp.sp_w = ((psc->packet[0] & 0x30) >> 2) + |
750 | ((psc->packet[0] & 0x04) >> 1) + |
751 | ((psc->packet[3] & 0x04) >> 2); |
752 | |
753 | /* Left/Right button handling. */ |
754 | sp.sp_left = psc->packet[0] & PMS_LBUTMASK; |
755 | sp.sp_right = psc->packet[0] & PMS_RBUTMASK; |
756 | |
757 | /* Up/Down buttons. */ |
758 | if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { |
759 | /* Old up/down buttons. */ |
760 | sp.sp_up = sp.sp_left ^ |
761 | (psc->packet[3] & PMS_LBUTMASK); |
762 | sp.sp_down = sp.sp_right ^ |
763 | (psc->packet[3] & PMS_RBUTMASK); |
764 | } else |
765 | if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS && |
766 | ((psc->packet[0] & PMS_RBUTMASK) ^ |
767 | (psc->packet[3] & PMS_RBUTMASK))) { |
768 | /* New up/down button. */ |
769 | sp.sp_up = psc->packet[4] & SYN_1BUTMASK; |
770 | sp.sp_down = psc->packet[5] & SYN_2BUTMASK; |
771 | } else { |
772 | sp.sp_up = 0; |
773 | sp.sp_down = 0; |
774 | } |
775 | |
776 | if(sc->flags & SYN_FLAG_HAS_ONE_BUTTON_CLICKPAD) { |
777 | /* This is not correctly specified. Read this button press |
778 | * from L/U bit. |
779 | */ |
780 | sp.sp_left = ((psc->packet[0] ^ psc->packet[3]) & 0x01) ? 1 : 0; |
781 | } else |
782 | /* Middle button. */ |
783 | if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { |
784 | /* Old style Middle Button. */ |
785 | sp.sp_middle = (psc->packet[0] & PMS_LBUTMASK) ^ |
786 | (psc->packet[3] & PMS_LBUTMASK); |
787 | } else |
788 | if (synaptics_up_down_emul == 1) { |
789 | /* Do middle button emulation using up/down buttons */ |
790 | sp.sp_middle = sp.sp_up | sp.sp_down; |
791 | sp.sp_up = sp.sp_down = 0; |
792 | } else |
793 | sp.sp_middle = 0; |
794 | |
795 | pms_synaptics_process_packet(psc, &sp); |
796 | } |
797 | |
798 | static void |
799 | pms_synaptics_passthrough(struct pms_softc *psc) |
800 | { |
801 | int dx, dy, dz; |
802 | int buttons, changed; |
803 | int s; |
804 | |
805 | buttons = ((psc->packet[1] & PMS_LBUTMASK) ? 0x20 : 0) | |
806 | ((psc->packet[1] & PMS_MBUTMASK) ? 0x40 : 0) | |
807 | ((psc->packet[1] & PMS_RBUTMASK) ? 0x80 : 0); |
808 | |
809 | dx = psc->packet[4]; |
810 | if (dx >= 128) |
811 | dx -= 256; |
812 | if (dx == -128) |
813 | dx = -127; |
814 | |
815 | dy = psc->packet[5]; |
816 | if (dy >= 128) |
817 | dy -= 256; |
818 | if (dy == -128) |
819 | dy = -127; |
820 | |
821 | dz = 0; |
822 | |
823 | changed = buttons ^ (psc->buttons & 0xe0); |
824 | psc->buttons ^= changed; |
825 | |
826 | if (dx || dy || dz || changed) { |
827 | buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); |
828 | s = spltty(); |
829 | wsmouse_input(psc->sc_wsmousedev, |
830 | buttons, dx, dy, dz, 0, |
831 | WSMOUSE_INPUT_DELTA); |
832 | splx(s); |
833 | } |
834 | } |
835 | |
836 | static void |
837 | pms_synaptics_input(void *vsc, int data) |
838 | { |
839 | struct pms_softc *psc = vsc; |
840 | struct timeval diff; |
841 | |
842 | if (!psc->sc_enabled) { |
843 | /* Interrupts are not expected. Discard the byte. */ |
844 | return; |
845 | } |
846 | |
847 | getmicrouptime(&psc->current); |
848 | |
849 | if (psc->inputstate > 0) { |
850 | timersub(&psc->current, &psc->last, &diff); |
851 | if (diff.tv_sec > 0 || diff.tv_usec >= 40000) { |
852 | aprint_debug_dev(psc->sc_dev, |
853 | "pms_input: unusual delay (%ld.%06ld s), " |
854 | "scheduling reset\n" , |
855 | (long)diff.tv_sec, (long)diff.tv_usec); |
856 | psc->inputstate = 0; |
857 | psc->sc_enabled = 0; |
858 | wakeup(&psc->sc_enabled); |
859 | return; |
860 | } |
861 | } |
862 | psc->last = psc->current; |
863 | |
864 | switch (psc->inputstate) { |
865 | case 0: |
866 | if ((data & 0xc8) != 0x80) { |
867 | aprint_debug_dev(psc->sc_dev, |
868 | "pms_input: 0x%02x out of sync\n" , data); |
869 | return; /* not in sync yet, discard input */ |
870 | } |
871 | /*FALLTHROUGH*/ |
872 | |
873 | case 3: |
874 | if ((data & 8) == 8) { |
875 | aprint_debug_dev(psc->sc_dev, |
876 | "pms_input: dropped in relative mode, reset\n" ); |
877 | psc->inputstate = 0; |
878 | psc->sc_enabled = 0; |
879 | wakeup(&psc->sc_enabled); |
880 | return; |
881 | } |
882 | } |
883 | |
884 | psc->packet[psc->inputstate++] = data & 0xff; |
885 | if (psc->inputstate == 6) { |
886 | /* |
887 | * We have a complete packet. |
888 | * Extract the pertinent details. |
889 | */ |
890 | psc->inputstate = 0; |
891 | |
892 | if ((psc->packet[0] & 0xfc) == 0x84 && |
893 | (psc->packet[3] & 0xcc) == 0xc4) { |
894 | /* W = SYNAPTICS_WIDTH_PASSTHROUGH, PS/2 passthrough */ |
895 | pms_synaptics_passthrough(psc); |
896 | } else { |
897 | pms_synaptics_parse(psc); |
898 | } |
899 | } |
900 | } |
901 | |
902 | static inline int |
903 | synaptics_finger_detect(struct synaptics_softc *sc, struct synaptics_packet *sp, |
904 | int *palmp) |
905 | { |
906 | int fingers; |
907 | |
908 | /* Assume no palm */ |
909 | *palmp = 0; |
910 | |
911 | /* |
912 | * Apply some hysteresis when checking for a finger. |
913 | * When the finger is first applied, we ignore it until the |
914 | * pressure exceeds the 'high' threshold. The finger is considered |
915 | * removed only when pressure falls beneath the 'low' threshold. |
916 | */ |
917 | if ((sc->prev_fingers == 0 && sp->sp_z > synaptics_finger_high) || |
918 | (sc->prev_fingers != 0 && sp->sp_z > synaptics_finger_low)) |
919 | fingers = 1; |
920 | else |
921 | fingers = 0; |
922 | |
923 | /* |
924 | * If the pad can't do palm detection, skip the rest. |
925 | */ |
926 | if (fingers == 0 || (sc->flags & SYN_FLAG_HAS_PALM_DETECT) == 0) |
927 | return (fingers); |
928 | |
929 | /* |
930 | * Palm detection |
931 | */ |
932 | if (sp->sp_z > SYNAPTICS_FINGER_FLAT && |
933 | sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN) |
934 | *palmp = 1; |
935 | |
936 | if (sc->prev_fingers == 0 && |
937 | (sp->sp_z > SYNAPTICS_FINGER_FLAT || |
938 | sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN)) { |
939 | /* |
940 | * Contact area or pressure is too great to be a finger. |
941 | * Just ignore it for now. |
942 | */ |
943 | return (0); |
944 | } |
945 | |
946 | /* |
947 | * Detect 2 and 3 fingers if supported, but only if multiple |
948 | * fingers appear within the tap gesture time period. |
949 | */ |
950 | if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER && |
951 | SYN_TIME(sc, sc->gesture_start_packet) < synaptics_gesture_length) { |
952 | switch (sp->sp_w) { |
953 | case SYNAPTICS_WIDTH_TWO_FINGERS: |
954 | fingers = 2; |
955 | break; |
956 | |
957 | case SYNAPTICS_WIDTH_THREE_OR_MORE: |
958 | fingers = 3; |
959 | break; |
960 | |
961 | case SYNAPTICS_WIDTH_PEN: |
962 | fingers = 1; |
963 | break; |
964 | |
965 | default: |
966 | /* |
967 | * The width value can report spurious single-finger |
968 | * events after a multi-finger event. |
969 | */ |
970 | if (sc->prev_fingers > 1) |
971 | fingers = sc->prev_fingers; |
972 | else |
973 | fingers = 1; |
974 | break; |
975 | } |
976 | } |
977 | |
978 | return (fingers); |
979 | } |
980 | |
981 | static inline void |
982 | synaptics_gesture_detect(struct synaptics_softc *sc, |
983 | struct synaptics_packet *sp, int fingers) |
984 | { |
985 | int gesture_len, gesture_buttons; |
986 | int set_buttons; |
987 | |
988 | gesture_len = SYN_TIME(sc, sc->gesture_start_packet); |
989 | gesture_buttons = sc->gesture_buttons; |
990 | |
991 | if (fingers > 0 && (fingers == sc->prev_fingers)) { |
992 | /* Finger is still present */ |
993 | sc->gesture_move_x = abs(sc->gesture_start_x - sp->sp_x); |
994 | sc->gesture_move_y = abs(sc->gesture_start_y - sp->sp_y); |
995 | } else |
996 | if (fingers && sc->prev_fingers == 0) { |
997 | /* |
998 | * Finger was just applied. |
999 | * If the previous gesture was a single-click, set things |
1000 | * up to deal with a possible drag or double-click gesture. |
1001 | * Basically, if the finger is removed again within |
1002 | * 'synaptics_gesture_length' packets, this is treated |
1003 | * as a double-click. Otherwise we will emulate holding |
1004 | * the left button down whilst dragging the mouse. |
1005 | */ |
1006 | if (SYN_IS_SINGLE_TAP(sc->gesture_type)) |
1007 | sc->gesture_type |= SYN_GESTURE_DRAG; |
1008 | |
1009 | sc->gesture_start_x = abs(sp->sp_x); |
1010 | sc->gesture_start_y = abs(sp->sp_y); |
1011 | sc->gesture_move_x = 0; |
1012 | sc->gesture_move_y = 0; |
1013 | sc->gesture_start_packet = sc->total_packets; |
1014 | |
1015 | #ifdef DIAGNOSTIC |
1016 | aprint_debug("Finger applied: gesture_start_x: %d gesture_start_y: %d\n" , |
1017 | sc->gesture_start_x, sc->gesture_start_y); |
1018 | #endif |
1019 | } else |
1020 | if (fingers == 0 && sc->prev_fingers != 0) { |
1021 | /* |
1022 | * Finger was just removed. |
1023 | * Check if the contact time and finger movement were |
1024 | * small enough to qualify as a gesture. |
1025 | * Ignore finger movement if multiple fingers were |
1026 | * detected (the pad may report coordinates for any |
1027 | * of the fingers). |
1028 | */ |
1029 | |
1030 | #ifdef DIAGNOSTIC |
1031 | aprint_debug("Finger removed: gesture_len: %d (%d)\n" , |
1032 | gesture_len, synaptics_gesture_length); |
1033 | aprint_debug("gesture_move_x: %d (%d) sp_x: %d\n" , |
1034 | sc->gesture_move_x, synaptics_gesture_move, abs(sp->sp_x)); |
1035 | aprint_debug("gesture_move_y: %d (%d) sp_y: %d\n" , |
1036 | sc->gesture_move_y, synaptics_gesture_move, abs(sp->sp_y)); |
1037 | #endif |
1038 | |
1039 | if (gesture_len < synaptics_gesture_length && |
1040 | ((sc->gesture_move_x < synaptics_gesture_move && |
1041 | sc->gesture_move_y < synaptics_gesture_move))) { |
1042 | /* |
1043 | * Looking good so far. |
1044 | */ |
1045 | if (SYN_IS_DRAG(sc->gesture_type)) { |
1046 | /* |
1047 | * Promote this gesture to double-click. |
1048 | */ |
1049 | sc->gesture_type |= SYN_GESTURE_DOUBLE; |
1050 | sc->gesture_type &= ~SYN_GESTURE_SINGLE; |
1051 | } else { |
1052 | /* |
1053 | * Single tap gesture. Set the tap length timer |
1054 | * and flag a single-click. |
1055 | */ |
1056 | sc->gesture_tap_packet = sc->total_packets; |
1057 | sc->gesture_type |= SYN_GESTURE_SINGLE; |
1058 | |
1059 | /* |
1060 | * The gesture can be modified depending on |
1061 | * the number of fingers detected. |
1062 | * |
1063 | * 1: Normal left button emulation. |
1064 | * 2: Either middle button or right button |
1065 | * depending on the value of the two_fingers |
1066 | * sysctl variable. |
1067 | * 3: Right button. |
1068 | */ |
1069 | switch (sc->prev_fingers) { |
1070 | case 2: |
1071 | if (synaptics_two_fingers_emul == 1) |
1072 | gesture_buttons |= PMS_RBUTMASK; |
1073 | else |
1074 | if (synaptics_two_fingers_emul == 2) |
1075 | gesture_buttons |= PMS_MBUTMASK; |
1076 | break; |
1077 | case 3: |
1078 | gesture_buttons |= PMS_RBUTMASK; |
1079 | break; |
1080 | default: |
1081 | gesture_buttons |= PMS_LBUTMASK; |
1082 | break; |
1083 | } |
1084 | } |
1085 | } |
1086 | |
1087 | /* |
1088 | * Always clear drag state when the finger is removed. |
1089 | */ |
1090 | sc->gesture_type &= ~SYN_GESTURE_DRAG; |
1091 | } |
1092 | |
1093 | if (sc->gesture_type == 0) { |
1094 | /* |
1095 | * There is no gesture in progress. |
1096 | * Clear emulated button state. |
1097 | */ |
1098 | sc->gesture_buttons = 0; |
1099 | return; |
1100 | } |
1101 | |
1102 | /* |
1103 | * A gesture is in progress. |
1104 | */ |
1105 | set_buttons = 0; |
1106 | |
1107 | if (SYN_IS_SINGLE_TAP(sc->gesture_type)) { |
1108 | /* |
1109 | * Single-click. |
1110 | * Activate the relevant button(s) until the |
1111 | * gesture tap timer has expired. |
1112 | */ |
1113 | if (SYN_TIME(sc, sc->gesture_tap_packet) < |
1114 | synaptics_gesture_length) |
1115 | set_buttons = 1; |
1116 | else |
1117 | sc->gesture_type &= ~SYN_GESTURE_SINGLE; |
1118 | } else |
1119 | if (SYN_IS_DOUBLE_TAP(sc->gesture_type) && sc->prev_fingers == 0) { |
1120 | /* |
1121 | * Double-click. |
1122 | * Activate the relevant button(s) once. |
1123 | */ |
1124 | set_buttons = 1; |
1125 | sc->gesture_type &= ~SYN_GESTURE_DOUBLE; |
1126 | } |
1127 | |
1128 | if (set_buttons || SYN_IS_DRAG(sc->gesture_type)) { |
1129 | /* |
1130 | * Single-click and drag. |
1131 | * Maintain button state until the finger is removed. |
1132 | */ |
1133 | sp->sp_left |= gesture_buttons & PMS_LBUTMASK; |
1134 | sp->sp_right |= gesture_buttons & PMS_RBUTMASK; |
1135 | sp->sp_middle |= gesture_buttons & PMS_MBUTMASK; |
1136 | } |
1137 | |
1138 | sc->gesture_buttons = gesture_buttons; |
1139 | } |
1140 | |
1141 | static inline int |
1142 | synaptics_filter_policy(struct synaptics_softc *sc, int *history, int value) |
1143 | { |
1144 | int a, b, rv, count; |
1145 | |
1146 | count = sc->total_packets; |
1147 | |
1148 | /* |
1149 | * Once we've accumulated at least SYN_HIST_SIZE values, combine |
1150 | * each new value with the previous two and return the average. |
1151 | * |
1152 | * This is necessary when the touchpad is operating in 80 packets |
1153 | * per second mode, as it performs little internal filtering on |
1154 | * reported values. |
1155 | * |
1156 | * Using a rolling average helps to filter out jitter caused by |
1157 | * tiny finger movements. |
1158 | */ |
1159 | if (sc->movement_history >= SYN_HIST_SIZE) { |
1160 | a = (history[(count + 0) % SYN_HIST_SIZE] + |
1161 | history[(count + 1) % SYN_HIST_SIZE]) / 2; |
1162 | |
1163 | b = (value + history[(count + 0) % SYN_HIST_SIZE]) / 2; |
1164 | |
1165 | rv = b - a; |
1166 | |
1167 | /* |
1168 | * Don't report the movement if it's below a certain |
1169 | * threshold. |
1170 | */ |
1171 | if (abs(rv) < synaptics_movement_threshold) |
1172 | rv = 0; |
1173 | } else |
1174 | rv = 0; |
1175 | |
1176 | /* |
1177 | * Add the new value to the history buffer. |
1178 | */ |
1179 | history[(count + 1) % SYN_HIST_SIZE] = value; |
1180 | |
1181 | return (rv); |
1182 | } |
1183 | |
1184 | /* Edge detection */ |
1185 | #define SYN_EDGE_TOP 1 |
1186 | #define SYN_EDGE_BOTTOM 2 |
1187 | #define SYN_EDGE_LEFT 4 |
1188 | #define SYN_EDGE_RIGHT 8 |
1189 | |
1190 | static inline int |
1191 | synaptics_check_edge(int x, int y) |
1192 | { |
1193 | int rv = 0; |
1194 | |
1195 | if (x < synaptics_edge_left) |
1196 | rv |= SYN_EDGE_LEFT; |
1197 | else |
1198 | if (x > synaptics_edge_right) |
1199 | rv |= SYN_EDGE_RIGHT; |
1200 | |
1201 | if (y < synaptics_edge_bottom) |
1202 | rv |= SYN_EDGE_BOTTOM; |
1203 | else |
1204 | if (y > synaptics_edge_top) |
1205 | rv |= SYN_EDGE_TOP; |
1206 | |
1207 | return (rv); |
1208 | } |
1209 | |
1210 | static inline int |
1211 | synaptics_edge_motion(struct synaptics_softc *sc, int delta, int dir) |
1212 | { |
1213 | |
1214 | /* |
1215 | * When edge motion is enabled, synaptics_edge_motion_delta is |
1216 | * combined with the current delta, together with the direction |
1217 | * in which to simulate the motion. The result is added to |
1218 | * the delta derived from finger movement. This provides a smooth |
1219 | * transition from finger movement to edge motion. |
1220 | */ |
1221 | delta = synaptics_edge_motion_delta + (dir * delta); |
1222 | if (delta < 0) |
1223 | return (0); |
1224 | if (delta > synaptics_edge_motion_delta) |
1225 | return (synaptics_edge_motion_delta); |
1226 | return (delta); |
1227 | } |
1228 | |
1229 | static inline int |
1230 | synaptics_scale(int delta, int scale, int *remp) |
1231 | { |
1232 | int rv; |
1233 | |
1234 | /* |
1235 | * Scale the raw delta in Synaptics coordinates (0-6143) into |
1236 | * something more reasonable by dividing the raw delta by a |
1237 | * scale factor. Any remainder from the previous scale result |
1238 | * is added to the current delta before scaling. |
1239 | * This prevents loss of resolution for very small/slow |
1240 | * movements of the finger. |
1241 | */ |
1242 | delta += *remp; |
1243 | rv = delta / scale; |
1244 | *remp = delta % scale; |
1245 | |
1246 | return (rv); |
1247 | } |
1248 | |
1249 | static inline void |
1250 | synaptics_movement(struct synaptics_softc *sc, struct synaptics_packet *sp, |
1251 | int *dxp, int *dyp) |
1252 | { |
1253 | int dx, dy, edge; |
1254 | |
1255 | /* |
1256 | * Compute the next values of dx and dy |
1257 | */ |
1258 | dx = synaptics_filter_policy(sc, sc->history_x, sp->sp_x); |
1259 | dy = synaptics_filter_policy(sc, sc->history_y, sp->sp_y); |
1260 | |
1261 | /* |
1262 | * If we're dealing with a drag gesture, and the finger moves to |
1263 | * the edge of the touchpad, apply edge motion emulation if it |
1264 | * is enabled. |
1265 | */ |
1266 | if (synaptics_edge_motion_delta && SYN_IS_DRAG(sc->gesture_type)) { |
1267 | edge = synaptics_check_edge(sp->sp_x, sp->sp_y); |
1268 | |
1269 | if (edge & SYN_EDGE_LEFT) |
1270 | dx -= synaptics_edge_motion(sc, dx, 1); |
1271 | if (edge & SYN_EDGE_RIGHT) |
1272 | dx += synaptics_edge_motion(sc, dx, -1); |
1273 | if (edge & SYN_EDGE_BOTTOM) |
1274 | dy -= synaptics_edge_motion(sc, dy, 1); |
1275 | if (edge & SYN_EDGE_TOP) |
1276 | dy += synaptics_edge_motion(sc, dy, -1); |
1277 | } |
1278 | |
1279 | /* |
1280 | * Apply scaling to both deltas |
1281 | */ |
1282 | dx = synaptics_scale(dx, synaptics_scale_x, &sc->rem_x); |
1283 | dy = synaptics_scale(dy, synaptics_scale_y, &sc->rem_y); |
1284 | |
1285 | /* |
1286 | * Clamp deltas to specified maximums. |
1287 | */ |
1288 | if (dx > synaptics_max_speed_x) |
1289 | dx = synaptics_max_speed_x; |
1290 | if (dy > synaptics_max_speed_y) |
1291 | dy = synaptics_max_speed_y; |
1292 | |
1293 | *dxp = dx; |
1294 | *dyp = dy; |
1295 | |
1296 | sc->movement_history++; |
1297 | } |
1298 | |
1299 | static void |
1300 | pms_synaptics_process_packet(struct pms_softc *psc, struct synaptics_packet *sp) |
1301 | { |
1302 | struct synaptics_softc *sc = &psc->u.synaptics; |
1303 | int dx, dy, dz; |
1304 | int fingers, palm, buttons, changed; |
1305 | int s; |
1306 | |
1307 | /* |
1308 | * Do Z-axis emulation using up/down buttons if required. |
1309 | * Note that the pad will send a one second burst of packets |
1310 | * when an up/down button is pressed and held. At the moment |
1311 | * we don't deal with auto-repeat, so convert the burst into |
1312 | * a one-shot. |
1313 | */ |
1314 | dz = 0; |
1315 | if (synaptics_up_down_emul == 2) { |
1316 | if (sc->up_down == 0) { |
1317 | if (sp->sp_up && sp->sp_down) { |
1318 | /* |
1319 | * Most up/down buttons will be actuated using |
1320 | * a rocker switch, so we should never see |
1321 | * them both simultaneously. But just in case, |
1322 | * treat this situation as a middle button |
1323 | * event. |
1324 | */ |
1325 | sp->sp_middle = 1; |
1326 | } else |
1327 | if (sp->sp_up) |
1328 | dz = -synaptics_up_down_motion_delta; |
1329 | else |
1330 | if (sp->sp_down) |
1331 | dz = synaptics_up_down_motion_delta; |
1332 | } |
1333 | |
1334 | sc->up_down = sp->sp_up | sp->sp_down; |
1335 | sp->sp_up = sp->sp_down = 0; |
1336 | } |
1337 | |
1338 | /* |
1339 | * Determine whether or not a finger is on the pad. |
1340 | * On some pads, this will return the number of fingers |
1341 | * detected. |
1342 | */ |
1343 | fingers = synaptics_finger_detect(sc, sp, &palm); |
1344 | |
1345 | /* |
1346 | * Do gesture processing only if we didn't detect a palm. |
1347 | */ |
1348 | if (palm == 0) |
1349 | synaptics_gesture_detect(sc, sp, fingers); |
1350 | else |
1351 | sc->gesture_type = sc->gesture_buttons = 0; |
1352 | |
1353 | /* |
1354 | * Determine what buttons to report |
1355 | */ |
1356 | buttons = (sp->sp_left ? 0x1 : 0) | |
1357 | (sp->sp_middle ? 0x2 : 0) | |
1358 | (sp->sp_right ? 0x4 : 0) | |
1359 | (sp->sp_up ? 0x8 : 0) | |
1360 | (sp->sp_down ? 0x10 : 0); |
1361 | changed = buttons ^ (psc->buttons & 0x1f); |
1362 | psc->buttons ^= changed; |
1363 | |
1364 | sc->prev_fingers = fingers; |
1365 | sc->total_packets++; |
1366 | |
1367 | /* |
1368 | * Do movement processing IFF we have a single finger and no palm. |
1369 | */ |
1370 | if (fingers == 1 && palm == 0) |
1371 | synaptics_movement(sc, sp, &dx, &dy); |
1372 | else { |
1373 | /* |
1374 | * No valid finger. Therefore no movement. |
1375 | */ |
1376 | sc->movement_history = 0; |
1377 | sc->rem_x = sc->rem_y = 0; |
1378 | dx = dy = 0; |
1379 | } |
1380 | |
1381 | /* |
1382 | * Pass the final results up to wsmouse_input() if necessary. |
1383 | */ |
1384 | if (dx || dy || dz || changed) { |
1385 | buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); |
1386 | s = spltty(); |
1387 | wsmouse_input(psc->sc_wsmousedev, |
1388 | buttons, |
1389 | dx, dy, dz, 0, |
1390 | WSMOUSE_INPUT_DELTA); |
1391 | splx(s); |
1392 | } |
1393 | } |
1394 | |