synaptics.c revision 1.32.4.1
1 /* $NetBSD: synaptics.c,v 1.32.4.1 2015/04/06 15:18:13 skrll 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 1.32.4.1 2015/04/06 15:18:13 skrll 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
Indexes created Wed Oct 01 19:09:53 GMT 2025