synaptics.c revision 1.21
1 /* $NetBSD: synaptics.c,v 1.21 2008/04/30 14:07:14 ad 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 1.21 2008/04/30 14:07:14 ad 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 60 #include <sys/bus.h> 61 62 #include <dev/pckbport/pckbportvar.h> 63 64 #include <dev/pckbport/synapticsreg.h> 65 #include <dev/pckbport/synapticsvar.h> 66 67 #include <dev/pckbport/pmsreg.h> 68 #include <dev/pckbport/pmsvar.h> 69 70 #include <dev/wscons/wsconsio.h> 71 #include <dev/wscons/wsmousevar.h> 72 73 /* 74 * Absolute-mode packets are decoded and passed around using 75 * the following structure. 76 */ 77 struct synaptics_packet { 78 signed short sp_x; /* Unscaled absolute X/Y coordinates */ 79 signed short sp_y; 80 u_char sp_z; /* Z (pressure) */ 81 u_char sp_w; /* W (contact patch width) */ 82 char sp_left; /* Left mouse button status */ 83 char sp_right; /* Right mouse button status */ 84 char sp_middle; /* Middle button status (possibly emulated) */ 85 char sp_up; /* Up button status */ 86 char sp_down; /* Down button status */ 87 }; 88 89 static int pms_synaptics_send_command(pckbport_tag_t, pckbport_slot_t, u_char); 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 /* Controled 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 int 135 pms_synaptics_probe_init(void *vsc) 136 { 137 struct pms_softc *psc = vsc; 138 struct synaptics_softc *sc = &psc->u.synaptics; 139 u_char cmd[2], resp[3]; 140 int res, ver_minor, ver_major; 141 struct sysctllog *clog = NULL; 142 143 res = pms_synaptics_send_command(psc->sc_kbctag, psc->sc_kbcslot, 144 SYNAPTICS_IDENTIFY_TOUCHPAD); 145 cmd[0] = PMS_SEND_DEV_STATUS; 146 res |= pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 3, 147 resp, 0); 148 if (res) { 149 #ifdef SYNAPTICSDEBUG 150 aprint_normal_dev(psc->sc_dev, 151 "synaptics_probe: Identify Touchpad error.\n"); 152 #endif 153 /* 154 * Reset device in case the probe confused it. 155 */ 156 doreset: 157 cmd[0] = PMS_RESET; 158 (void) pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 159 1, 2, resp, 1); 160 return (res); 161 } 162 163 if (resp[1] != SYNAPTICS_MAGIC_BYTE) { 164 #ifdef SYNAPTICSDEBUG 165 aprint_normal_dev(psc->sc_dev, 166 "synaptics_probe: Not synaptics.\n"); 167 #endif 168 res = 1; 169 goto doreset; 170 } 171 172 sc->flags = 0; 173 174 /* Check for minimum version and print a nice message. */ 175 ver_major = resp[2] & 0x0f; 176 ver_minor = resp[0]; 177 aprint_normal_dev(psc->sc_dev, "Synaptics touchpad version %d.%d\n", 178 ver_major, ver_minor); 179 if (ver_major * 10 + ver_minor < SYNAPTICS_MIN_VERSION) { 180 /* No capability query support. */ 181 sc->caps = 0; 182 goto done; 183 } 184 185 /* Query the hardware capabilities. */ 186 res = pms_synaptics_send_command(psc->sc_kbctag, psc->sc_kbcslot, 187 SYNAPTICS_READ_CAPABILITIES); 188 cmd[0] = PMS_SEND_DEV_STATUS; 189 res |= pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 3, 190 resp, 0); 191 if (res) { 192 /* Hmm, failed to get capabilites. */ 193 aprint_error_dev(psc->sc_dev, 194 "synaptics_probe: Failed to query capabilities.\n"); 195 goto doreset; 196 } 197 198 sc->caps = (resp[0] << 8) | resp[2]; 199 200 if (sc->caps & SYNAPTICS_CAP_MBUTTON) 201 sc->flags |= SYN_FLAG_HAS_MIDDLE_BUTTON; 202 203 if (sc->caps & SYNAPTICS_CAP_4BUTTON) 204 sc->flags |= SYN_FLAG_HAS_BUTTONS_4_5; 205 206 if (sc->caps & SYNAPTICS_CAP_EXTENDED) { 207 #ifdef SYNAPTICSDEBUG 208 aprint_normal_dev(psc->sc_dev, 209 "synaptics_probe: Capabilities 0x%04x.\n", sc->caps); 210 #endif 211 if (sc->caps & SYNAPTICS_CAP_PASSTHROUGH) 212 sc->flags |= SYN_FLAG_HAS_PASSTHROUGH; 213 214 if (sc->caps & SYNAPTICS_CAP_PALMDETECT) 215 sc->flags |= SYN_FLAG_HAS_PALM_DETECT; 216 217 if (sc->caps & SYNAPTICS_CAP_MULTIDETECT) 218 sc->flags |= SYN_FLAG_HAS_MULTI_FINGER; 219 220 /* Ask about extra buttons to detect up/down. */ 221 if (sc->caps & SYNAPTICS_CAP_EXTNUM) { 222 res = pms_synaptics_send_command(psc->sc_kbctag, 223 psc->sc_kbcslot, SYNAPTICS_EXTENDED_QUERY); 224 cmd[0] = PMS_SEND_DEV_STATUS; 225 res |= pckbport_poll_cmd(psc->sc_kbctag, 226 psc->sc_kbcslot, cmd, 1, 3, resp, 0); 227 #ifdef SYNAPTICSDEBUG 228 if (res == 0) 229 aprint_normal_dev(psc->sc_dev, 230 "synaptics_probe: Extended " 231 "Capabilities 0x%02x.\n", resp[1]); 232 #endif 233 if (!res && (resp[1] >> 4) >= 2) { 234 /* Yes. */ 235 sc->flags |= SYN_FLAG_HAS_UP_DOWN_BUTTONS; 236 } 237 } 238 } 239 240 if (sc->flags) { 241 const char comma[] = ", "; 242 const char *sep = ""; 243 aprint_normal_dev(psc->sc_dev, ""); 244 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 245 aprint_normal("%sMiddle button", sep); 246 sep = comma; 247 } 248 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 249 aprint_normal("%sButtons 4/5", sep); 250 sep = comma; 251 } 252 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS) { 253 aprint_normal("%sUp/down buttons", sep); 254 sep = comma; 255 } 256 if (sc->flags & SYN_FLAG_HAS_PALM_DETECT) { 257 aprint_normal("%sPalm detect", sep); 258 sep = comma; 259 } 260 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER) 261 aprint_normal("%sMulti-finger", sep); 262 263 aprint_normal("\n"); 264 } 265 266 done: 267 pms_sysctl_synaptics(&clog); 268 pckbport_set_inputhandler(psc->sc_kbctag, psc->sc_kbcslot, 269 pms_synaptics_input, psc, device_xname(psc->sc_dev)); 270 271 return (0); 272 } 273 274 void 275 pms_synaptics_enable(void *vsc) 276 { 277 struct pms_softc *psc = vsc; 278 struct synaptics_softc *sc = &psc->u.synaptics; 279 u_char cmd[2]; 280 int res; 281 282 /* 283 * Enable Absolute mode with W (width) reporting, and set 284 * the packet rate to maximum (80 packets per second). 285 */ 286 res = pms_synaptics_send_command(psc->sc_kbctag, psc->sc_kbcslot, 287 SYNAPTICS_MODE_ABSOLUTE | SYNAPTICS_MODE_W | SYNAPTICS_MODE_RATE); 288 cmd[0] = PMS_SET_SAMPLE; 289 cmd[1] = 0x14; /* doit */ 290 res |= pckbport_enqueue_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 2, 0, 291 1, NULL); 292 sc->up_down = 0; 293 sc->prev_fingers = 0; 294 sc->gesture_start_x = sc->gesture_start_y = 0; 295 sc->gesture_start_packet = 0; 296 sc->gesture_tap_packet = 0; 297 sc->gesture_type = 0; 298 sc->gesture_buttons = 0; 299 sc->rem_x = sc->rem_y = 0; 300 sc->movement_history = 0; 301 if (res) { 302 aprint_error_dev(psc->sc_dev, 303 "synaptics_enable: Error enabling device.\n"); 304 } 305 } 306 307 void 308 pms_synaptics_resume(void *vsc) 309 { 310 struct pms_softc *psc = vsc; 311 unsigned char cmd[1],resp[2] = { 0,0 }; 312 int res; 313 314 cmd[0] = PMS_RESET; 315 res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 2, 316 resp, 1); 317 aprint_debug_dev(psc->sc_dev, 318 "pms_synaptics_resume: reset on resume %d 0x%02x 0x%02x\n", 319 res, resp[0], resp[1]); 320 } 321 322 static void 323 pms_sysctl_synaptics(struct sysctllog **clog) 324 { 325 int rc, root_num; 326 const struct sysctlnode *node; 327 328 if ((rc = sysctl_createv(clog, 0, NULL, NULL, 329 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 330 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 331 goto err; 332 333 if ((rc = sysctl_createv(clog, 0, NULL, &node, 334 CTLFLAG_PERMANENT, CTLTYPE_NODE, "synaptics", 335 SYSCTL_DESCR("Synaptics touchpad controls"), 336 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 337 goto err; 338 339 root_num = node->sysctl_num; 340 341 if ((rc = sysctl_createv(clog, 0, NULL, &node, 342 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 343 CTLTYPE_INT, "up_down_emulation", 344 SYSCTL_DESCR("Middle button/Z-axis emulation with up/down buttons"), 345 pms_sysctl_synaptics_verify, 0, 346 &synaptics_up_down_emul, 347 0, CTL_HW, root_num, CTL_CREATE, 348 CTL_EOL)) != 0) 349 goto err; 350 351 synaptics_up_down_emul_nodenum = node->sysctl_num; 352 353 if ((rc = sysctl_createv(clog, 0, NULL, &node, 354 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 355 CTLTYPE_INT, "up_down_motion_delta", 356 SYSCTL_DESCR("Up/down button Z-axis emulation rate"), 357 pms_sysctl_synaptics_verify, 0, 358 &synaptics_up_down_motion_delta, 359 0, CTL_HW, root_num, CTL_CREATE, 360 CTL_EOL)) != 0) 361 goto err; 362 363 synaptics_up_down_motion_delta_nodenum = node->sysctl_num; 364 365 if ((rc = sysctl_createv(clog, 0, NULL, &node, 366 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 367 CTLTYPE_INT, "gesture_move", 368 SYSCTL_DESCR("Movement greater than this between taps cancels gesture"), 369 pms_sysctl_synaptics_verify, 0, 370 &synaptics_gesture_move, 371 0, CTL_HW, root_num, CTL_CREATE, 372 CTL_EOL)) != 0) 373 goto err; 374 375 synaptics_gesture_move_nodenum = node->sysctl_num; 376 377 if ((rc = sysctl_createv(clog, 0, NULL, &node, 378 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 379 CTLTYPE_INT, "gesture_length", 380 SYSCTL_DESCR("Time period in which tap is recognised as a gesture"), 381 pms_sysctl_synaptics_verify, 0, 382 &synaptics_gesture_length, 383 0, CTL_HW, root_num, CTL_CREATE, 384 CTL_EOL)) != 0) 385 goto err; 386 387 synaptics_gesture_length_nodenum = node->sysctl_num; 388 389 if ((rc = sysctl_createv(clog, 0, NULL, &node, 390 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 391 CTLTYPE_INT, "edge_left", 392 SYSCTL_DESCR("Define left edge of touchpad"), 393 pms_sysctl_synaptics_verify, 0, 394 &synaptics_edge_left, 395 0, CTL_HW, root_num, CTL_CREATE, 396 CTL_EOL)) != 0) 397 goto err; 398 399 synaptics_edge_left_nodenum = node->sysctl_num; 400 401 if ((rc = sysctl_createv(clog, 0, NULL, &node, 402 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 403 CTLTYPE_INT, "edge_right", 404 SYSCTL_DESCR("Define right edge of touchpad"), 405 pms_sysctl_synaptics_verify, 0, 406 &synaptics_edge_right, 407 0, CTL_HW, root_num, CTL_CREATE, 408 CTL_EOL)) != 0) 409 goto err; 410 411 synaptics_edge_right_nodenum = node->sysctl_num; 412 413 if ((rc = sysctl_createv(clog, 0, NULL, &node, 414 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 415 CTLTYPE_INT, "edge_top", 416 SYSCTL_DESCR("Define top edge of touchpad"), 417 pms_sysctl_synaptics_verify, 0, 418 &synaptics_edge_top, 419 0, CTL_HW, root_num, CTL_CREATE, 420 CTL_EOL)) != 0) 421 goto err; 422 423 synaptics_edge_top_nodenum = node->sysctl_num; 424 425 if ((rc = sysctl_createv(clog, 0, NULL, &node, 426 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 427 CTLTYPE_INT, "edge_bottom", 428 SYSCTL_DESCR("Define bottom edge of touchpad"), 429 pms_sysctl_synaptics_verify, 0, 430 &synaptics_edge_bottom, 431 0, CTL_HW, root_num, CTL_CREATE, 432 CTL_EOL)) != 0) 433 goto err; 434 435 synaptics_edge_bottom_nodenum = node->sysctl_num; 436 437 if ((rc = sysctl_createv(clog, 0, NULL, &node, 438 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 439 CTLTYPE_INT, "edge_motion_delta", 440 SYSCTL_DESCR("Define edge motion rate"), 441 pms_sysctl_synaptics_verify, 0, 442 &synaptics_edge_motion_delta, 443 0, CTL_HW, root_num, CTL_CREATE, 444 CTL_EOL)) != 0) 445 goto err; 446 447 synaptics_edge_motion_delta_nodenum = node->sysctl_num; 448 449 if ((rc = sysctl_createv(clog, 0, NULL, &node, 450 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 451 CTLTYPE_INT, "finger_high", 452 SYSCTL_DESCR("Define finger applied pressure threshold"), 453 pms_sysctl_synaptics_verify, 0, 454 &synaptics_finger_high, 455 0, CTL_HW, root_num, CTL_CREATE, 456 CTL_EOL)) != 0) 457 goto err; 458 459 synaptics_finger_high_nodenum = node->sysctl_num; 460 461 if ((rc = sysctl_createv(clog, 0, NULL, &node, 462 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 463 CTLTYPE_INT, "finger_low", 464 SYSCTL_DESCR("Define finger removed pressure threshold"), 465 pms_sysctl_synaptics_verify, 0, 466 &synaptics_finger_low, 467 0, CTL_HW, root_num, CTL_CREATE, 468 CTL_EOL)) != 0) 469 goto err; 470 471 synaptics_finger_low_nodenum = node->sysctl_num; 472 473 if ((rc = sysctl_createv(clog, 0, NULL, &node, 474 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 475 CTLTYPE_INT, "two_fingers_emulation", 476 SYSCTL_DESCR("Map two fingers to middle button"), 477 pms_sysctl_synaptics_verify, 0, 478 &synaptics_two_fingers_emul, 479 0, CTL_HW, root_num, CTL_CREATE, 480 CTL_EOL)) != 0) 481 goto err; 482 483 synaptics_two_fingers_emul_nodenum = node->sysctl_num; 484 485 if ((rc = sysctl_createv(clog, 0, NULL, &node, 486 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 487 CTLTYPE_INT, "scale_x", 488 SYSCTL_DESCR("Horizontal movement scale factor"), 489 pms_sysctl_synaptics_verify, 0, 490 &synaptics_scale_x, 491 0, CTL_HW, root_num, CTL_CREATE, 492 CTL_EOL)) != 0) 493 goto err; 494 495 synaptics_scale_x_nodenum = node->sysctl_num; 496 497 if ((rc = sysctl_createv(clog, 0, NULL, &node, 498 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 499 CTLTYPE_INT, "scale_y", 500 SYSCTL_DESCR("Vertical movement scale factor"), 501 pms_sysctl_synaptics_verify, 0, 502 &synaptics_scale_y, 503 0, CTL_HW, root_num, CTL_CREATE, 504 CTL_EOL)) != 0) 505 goto err; 506 507 synaptics_scale_y_nodenum = node->sysctl_num; 508 509 if ((rc = sysctl_createv(clog, 0, NULL, &node, 510 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 511 CTLTYPE_INT, "max_speed_x", 512 SYSCTL_DESCR("Horizontal movement maximum speed"), 513 pms_sysctl_synaptics_verify, 0, 514 &synaptics_max_speed_x, 515 0, CTL_HW, root_num, CTL_CREATE, 516 CTL_EOL)) != 0) 517 goto err; 518 519 synaptics_max_speed_x_nodenum = node->sysctl_num; 520 521 if ((rc = sysctl_createv(clog, 0, NULL, &node, 522 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 523 CTLTYPE_INT, "max_speed_y", 524 SYSCTL_DESCR("Vertical movement maximum speed"), 525 pms_sysctl_synaptics_verify, 0, 526 &synaptics_max_speed_y, 527 0, CTL_HW, root_num, CTL_CREATE, 528 CTL_EOL)) != 0) 529 goto err; 530 531 synaptics_max_speed_y_nodenum = node->sysctl_num; 532 533 if ((rc = sysctl_createv(clog, 0, NULL, &node, 534 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 535 CTLTYPE_INT, "movement_threshold", 536 SYSCTL_DESCR("Minimum reported movement threshold"), 537 pms_sysctl_synaptics_verify, 0, 538 &synaptics_movement_threshold, 539 0, CTL_HW, root_num, CTL_CREATE, 540 CTL_EOL)) != 0) 541 goto err; 542 543 synaptics_movement_threshold_nodenum = node->sysctl_num; 544 return; 545 546 err: 547 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 548 } 549 550 static int 551 pms_sysctl_synaptics_verify(SYSCTLFN_ARGS) 552 { 553 int error, t; 554 struct sysctlnode node; 555 556 node = *rnode; 557 t = *(int *)rnode->sysctl_data; 558 node.sysctl_data = &t; 559 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 560 if (error || newp == NULL) 561 return error; 562 563 /* Sanity check the params. */ 564 if (node.sysctl_num == synaptics_up_down_emul_nodenum || 565 node.sysctl_num == synaptics_two_fingers_emul_nodenum) { 566 if (t < 0 || t > 2) 567 return (EINVAL); 568 } else 569 if (node.sysctl_num == synaptics_gesture_length_nodenum || 570 node.sysctl_num == synaptics_edge_motion_delta_nodenum || 571 node.sysctl_num == synaptics_up_down_motion_delta_nodenum) { 572 if (t < 0) 573 return (EINVAL); 574 } else 575 if (node.sysctl_num == synaptics_edge_left_nodenum || 576 node.sysctl_num == synaptics_edge_bottom_nodenum) { 577 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 2)) 578 return (EINVAL); 579 } else 580 if (node.sysctl_num == synaptics_edge_right_nodenum || 581 node.sysctl_num == synaptics_edge_top_nodenum) { 582 if (t < (SYNAPTICS_EDGE_MAX / 2)) 583 return (EINVAL); 584 } else 585 if (node.sysctl_num == synaptics_scale_x_nodenum || 586 node.sysctl_num == synaptics_scale_y_nodenum) { 587 if (t < 1 || t > (SYNAPTICS_EDGE_MAX / 4)) 588 return (EINVAL); 589 } else 590 if (node.sysctl_num == synaptics_finger_high_nodenum) { 591 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 592 t < synaptics_finger_low) 593 return (EINVAL); 594 } else 595 if (node.sysctl_num == synaptics_finger_low_nodenum) { 596 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 597 t > synaptics_finger_high) 598 return (EINVAL); 599 } else 600 if (node.sysctl_num == synaptics_gesture_move_nodenum || 601 node.sysctl_num == synaptics_movement_threshold_nodenum) { 602 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 4)) 603 return (EINVAL); 604 } else 605 return (EINVAL); 606 607 *(int *)rnode->sysctl_data = t; 608 609 return (0); 610 } 611 612 static int 613 pms_synaptics_send_command(pckbport_tag_t tag, pckbport_slot_t slot, 614 u_char syn_cmd) 615 { 616 u_char cmd[2]; 617 int res; 618 619 /* 620 * Need to send 4 Set Resolution commands, with the argument 621 * encoded in the bottom most 2 bits. 622 */ 623 cmd[0] = PMS_SET_RES; 624 cmd[1] = syn_cmd >> 6; 625 res = pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 626 627 cmd[0] = PMS_SET_RES; 628 cmd[1] = (syn_cmd & 0x30) >> 4; 629 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 630 631 cmd[0] = PMS_SET_RES; 632 cmd[1] = (syn_cmd & 0x0c) >> 2; 633 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 634 635 cmd[0] = PMS_SET_RES; 636 cmd[1] = (syn_cmd & 0x03); 637 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 638 639 return (res); 640 } 641 642 /* Masks for the first byte of a packet */ 643 #define PMS_LBUTMASK 0x01 644 #define PMS_RBUTMASK 0x02 645 #define PMS_MBUTMASK 0x04 646 647 static void 648 pms_synaptics_parse(struct pms_softc *psc) 649 { 650 struct synaptics_softc *sc = &psc->u.synaptics; 651 struct synaptics_packet sp; 652 653 /* Absolute X/Y coordinates of finger */ 654 sp.sp_x = psc->packet[4] + ((psc->packet[1] & 0x0f) << 8) + 655 ((psc->packet[3] & 0x10) << 8); 656 sp.sp_y = psc->packet[5] + ((psc->packet[1] & 0xf0) << 4) + 657 ((psc->packet[3] & 0x20) << 7); 658 659 /* Pressure */ 660 sp.sp_z = psc->packet[2]; 661 662 /* Width of finger */ 663 sp.sp_w = ((psc->packet[0] & 0x30) >> 2) + 664 ((psc->packet[0] & 0x04) >> 1) + 665 ((psc->packet[3] & 0x04) >> 2); 666 667 /* Left/Right button handling. */ 668 sp.sp_left = psc->packet[0] & PMS_LBUTMASK; 669 sp.sp_right = psc->packet[0] & PMS_RBUTMASK; 670 671 /* Up/Down buttons. */ 672 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 673 /* Old up/down buttons. */ 674 sp.sp_up = sp.sp_left ^ 675 (psc->packet[3] & PMS_LBUTMASK); 676 sp.sp_down = sp.sp_right ^ 677 (psc->packet[3] & PMS_RBUTMASK); 678 } else 679 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS && 680 ((psc->packet[0] & PMS_RBUTMASK) ^ 681 (psc->packet[3] & PMS_RBUTMASK))) { 682 /* New up/down button. */ 683 sp.sp_up = psc->packet[4] & SYN_1BUTMASK; 684 sp.sp_down = psc->packet[5] & SYN_2BUTMASK; 685 } else { 686 sp.sp_up = 0; 687 sp.sp_down = 0; 688 } 689 690 /* Middle button. */ 691 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 692 /* Old style Middle Button. */ 693 sp.sp_middle = (psc->packet[0] & PMS_LBUTMASK) ^ 694 (psc->packet[3] & PMS_LBUTMASK); 695 } else 696 if (synaptics_up_down_emul == 1) { 697 /* Do middle button emulation using up/down buttons */ 698 sp.sp_middle = sp.sp_up | sp.sp_down; 699 sp.sp_up = sp.sp_down = 0; 700 } else 701 sp.sp_middle = 0; 702 703 pms_synaptics_process_packet(psc, &sp); 704 } 705 706 static void 707 pms_synaptics_passthrough(struct pms_softc *psc) 708 { 709 int dx, dy, dz; 710 int buttons, changed; 711 int s; 712 713 buttons = ((psc->packet[1] & PMS_LBUTMASK) ? 0x20 : 0) | 714 ((psc->packet[1] & PMS_MBUTMASK) ? 0x40 : 0) | 715 ((psc->packet[1] & PMS_RBUTMASK) ? 0x80 : 0); 716 717 dx = psc->packet[4]; 718 if (dx >= 128) 719 dx -= 256; 720 if (dx == -128) 721 dx = -127; 722 723 dy = psc->packet[5]; 724 if (dy >= 128) 725 dy -= 256; 726 if (dy == -128) 727 dy = -127; 728 729 dz = 0; 730 731 changed = buttons ^ (psc->buttons & 0xe0); 732 psc->buttons ^= changed; 733 734 if (dx || dy || dz || changed) { 735 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 736 s = spltty(); 737 wsmouse_input(psc->sc_wsmousedev, 738 buttons, dx, dy, dz, 0, 739 WSMOUSE_INPUT_DELTA); 740 splx(s); 741 } 742 } 743 744 static void 745 pms_synaptics_input(void *vsc, int data) 746 { 747 struct pms_softc *psc = vsc; 748 struct timeval diff; 749 750 if (!psc->sc_enabled) { 751 /* Interrupts are not expected. Discard the byte. */ 752 return; 753 } 754 755 getmicrouptime(&psc->current); 756 757 if (psc->inputstate > 0) { 758 timersub(&psc->current, &psc->last, &diff); 759 if (diff.tv_sec > 0 || diff.tv_usec >= 40000) { 760 aprint_debug_dev(psc->sc_dev, 761 "pms_input: unusual delay (%ld.%06ld s), " 762 "scheduling reset\n", 763 (long)diff.tv_sec, (long)diff.tv_usec); 764 psc->inputstate = 0; 765 psc->sc_enabled = 0; 766 wakeup(&psc->sc_enabled); 767 return; 768 } 769 } 770 psc->last = psc->current; 771 772 switch (psc->inputstate) { 773 case 0: 774 if ((data & 0xc8) != 0x80) { 775 #ifdef SYNAPTICSDEBUG 776 aprint_normal_dev(psc->sc_dev, 777 "pms_input: 0x%02x out of sync\n", data); 778 #endif 779 return; /* not in sync yet, discard input */ 780 } 781 /*FALLTHROUGH*/ 782 783 case 3: 784 if ((data & 8) == 8) { 785 #ifdef SYNAPTICSDEBUG 786 aprint_normal_dev(psc->sc_dev, 787 "pms_input: dropped in relative mode, reset\n"); 788 #endif 789 psc->inputstate = 0; 790 psc->sc_enabled = 0; 791 wakeup(&psc->sc_enabled); 792 return; 793 } 794 } 795 796 psc->packet[psc->inputstate++] = data & 0xff; 797 if (psc->inputstate == 6) { 798 /* 799 * We have a complete packet. 800 * Extract the pertinent details. 801 */ 802 psc->inputstate = 0; 803 804 if ((psc->packet[0] & 0xfc) == 0x84 && 805 (psc->packet[3] & 0xcc) == 0xc4) { 806 /* PS/2 passthrough */ 807 pms_synaptics_passthrough(psc); 808 } else { 809 pms_synaptics_parse(psc); 810 } 811 } 812 } 813 814 static inline int 815 synaptics_finger_detect(struct synaptics_softc *sc, struct synaptics_packet *sp, 816 int *palmp) 817 { 818 int fingers; 819 820 /* Assume no palm */ 821 *palmp = 0; 822 823 /* 824 * Apply some hysteresis when checking for a finger. 825 * When the finger is first applied, we ignore it until the 826 * pressure exceeds the 'high' threshold. The finger is considered 827 * removed only when pressure falls beneath the 'low' threshold. 828 */ 829 if ((sc->prev_fingers == 0 && sp->sp_z > synaptics_finger_high) || 830 (sc->prev_fingers != 0 && sp->sp_z > synaptics_finger_low)) 831 fingers = 1; 832 else 833 fingers = 0; 834 835 /* 836 * If the pad can't do palm detection, skip the rest. 837 */ 838 if (fingers == 0 || (sc->flags & SYN_FLAG_HAS_PALM_DETECT) == 0) 839 return (fingers); 840 841 /* 842 * Palm detection 843 */ 844 if (sp->sp_z > SYNAPTICS_FINGER_FLAT && 845 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN) 846 *palmp = 1; 847 848 if (sc->prev_fingers == 0 && 849 (sp->sp_z > SYNAPTICS_FINGER_FLAT || 850 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN)) { 851 /* 852 * Contact area or pressure is too great to be a finger. 853 * Just ignore it for now. 854 */ 855 return (0); 856 } 857 858 /* 859 * Detect 2 and 3 fingers if supported, but only if multiple 860 * fingers appear within the tap gesture time period. 861 */ 862 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER && 863 SYN_TIME(sc, sc->gesture_start_packet) < synaptics_gesture_length) { 864 switch (sp->sp_w) { 865 case SYNAPTICS_WIDTH_TWO_FINGERS: 866 fingers = 2; 867 break; 868 869 case SYNAPTICS_WIDTH_THREE_OR_MORE: 870 fingers = 3; 871 break; 872 873 case SYNAPTICS_WIDTH_PEN: 874 fingers = 1; 875 break; 876 877 default: 878 /* 879 * The width value can report spurious single-finger 880 * events after a multi-finger event. 881 */ 882 if (sc->prev_fingers > 1) 883 fingers = sc->prev_fingers; 884 else 885 fingers = 1; 886 break; 887 } 888 } 889 890 return (fingers); 891 } 892 893 static inline void 894 synaptics_gesture_detect(struct synaptics_softc *sc, 895 struct synaptics_packet *sp, int fingers) 896 { 897 int gesture_len, gesture_move_x, gesture_move_y, gesture_buttons; 898 int set_buttons; 899 900 gesture_len = SYN_TIME(sc, sc->gesture_start_packet); 901 gesture_buttons = sc->gesture_buttons; 902 903 if (fingers && sc->prev_fingers == 0) { 904 /* 905 * Finger was just applied. 906 * If the previous gesture was a single-click, set things 907 * up to deal with a possible drag or double-click gesture. 908 * Basically, if the finger is removed again within 909 * 'synaptics_gesture_length' packets, this is treated 910 * as a double-click. Otherwise we will emulate holding 911 * the left button down whilst dragging the mouse. 912 */ 913 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) 914 sc->gesture_type |= SYN_GESTURE_DRAG; 915 916 sc->gesture_start_x = sp->sp_x; 917 sc->gesture_start_y = sp->sp_y; 918 sc->gesture_start_packet = sc->total_packets; 919 } else 920 if (fingers == 0 && sc->prev_fingers != 0) { 921 /* 922 * Finger was just removed. 923 * Check if the contact time and finger movement were 924 * small enough to qualify as a gesture. 925 * Ignore finger movement if multiple fingers were 926 * detected (the pad may report coordinates for any 927 * of the fingers). 928 */ 929 gesture_move_x = abs(sc->gesture_start_x - sp->sp_x); 930 gesture_move_y = abs(sc->gesture_start_y - sp->sp_y); 931 932 if (gesture_len < synaptics_gesture_length && 933 (sc->prev_fingers > 1 || 934 (gesture_move_x < synaptics_gesture_move && 935 gesture_move_y < synaptics_gesture_move))) { 936 /* 937 * Looking good so far. 938 */ 939 if (SYN_IS_DRAG(sc->gesture_type)) { 940 /* 941 * Promote this gesture to double-click. 942 */ 943 sc->gesture_type |= SYN_GESTURE_DOUBLE; 944 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 945 } else { 946 /* 947 * Single tap gesture. Set the tap length timer 948 * and flag a single-click. 949 */ 950 sc->gesture_tap_packet = sc->total_packets; 951 sc->gesture_type |= SYN_GESTURE_SINGLE; 952 953 /* 954 * The gesture can be modified depending on 955 * the number of fingers detected. 956 * 957 * 1: Normal left button emulation. 958 * 2: Either middle button or right button 959 * depending on the value of the two_fingers 960 * sysctl variable. 961 * 3: Right button. 962 */ 963 switch (sc->prev_fingers) { 964 case 2: 965 if (synaptics_two_fingers_emul == 1) 966 gesture_buttons |= PMS_RBUTMASK; 967 else 968 if (synaptics_two_fingers_emul == 2) 969 gesture_buttons |= PMS_MBUTMASK; 970 break; 971 case 3: 972 gesture_buttons |= PMS_RBUTMASK; 973 break; 974 default: 975 gesture_buttons |= PMS_LBUTMASK; 976 break; 977 } 978 } 979 } 980 981 /* 982 * Always clear drag state when the finger is removed. 983 */ 984 sc->gesture_type &= ~SYN_GESTURE_DRAG; 985 } 986 987 if (sc->gesture_type == 0) { 988 /* 989 * There is no gesture in progress. 990 * Clear emulated button state. 991 */ 992 sc->gesture_buttons = 0; 993 return; 994 } 995 996 /* 997 * A gesture is in progress. 998 */ 999 set_buttons = 0; 1000 1001 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) { 1002 /* 1003 * Single-click. 1004 * Activate the relevant button(s) until the 1005 * gesture tap timer has expired. 1006 */ 1007 if (SYN_TIME(sc, sc->gesture_tap_packet) < 1008 synaptics_gesture_length) 1009 set_buttons = 1; 1010 else 1011 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 1012 } else 1013 if (SYN_IS_DOUBLE_TAP(sc->gesture_type) && sc->prev_fingers == 0) { 1014 /* 1015 * Double-click. 1016 * Activate the relevant button(s) once. 1017 */ 1018 set_buttons = 1; 1019 sc->gesture_type &= ~SYN_GESTURE_DOUBLE; 1020 } 1021 1022 if (set_buttons || SYN_IS_DRAG(sc->gesture_type)) { 1023 /* 1024 * Single-click and drag. 1025 * Maintain button state until the finger is removed. 1026 */ 1027 sp->sp_left |= gesture_buttons & PMS_LBUTMASK; 1028 sp->sp_right |= gesture_buttons & PMS_RBUTMASK; 1029 sp->sp_middle |= gesture_buttons & PMS_MBUTMASK; 1030 } 1031 1032 sc->gesture_buttons = gesture_buttons; 1033 } 1034 1035 static inline int 1036 synaptics_filter_policy(struct synaptics_softc *sc, int *history, int value) 1037 { 1038 int a, b, rv, count; 1039 1040 count = sc->total_packets; 1041 1042 /* 1043 * Once we've accumulated at least SYN_HIST_SIZE values, combine 1044 * each new value with the previous two and return the average. 1045 * 1046 * This is necessary when the touchpad is operating in 80 packets 1047 * per second mode, as it performs little internal filtering on 1048 * reported values. 1049 * 1050 * Using a rolling average helps to filter out jitter caused by 1051 * tiny finger movements. 1052 */ 1053 if (sc->movement_history >= SYN_HIST_SIZE) { 1054 a = (history[(count + 0) % SYN_HIST_SIZE] + 1055 history[(count + 1) % SYN_HIST_SIZE]) / 2; 1056 1057 b = (value + history[(count + 0) % SYN_HIST_SIZE]) / 2; 1058 1059 rv = b - a; 1060 1061 /* 1062 * Don't report the movement if it's below a certain 1063 * threshold. 1064 */ 1065 if (abs(rv) < synaptics_movement_threshold) 1066 rv = 0; 1067 } else 1068 rv = 0; 1069 1070 /* 1071 * Add the new value to the history buffer. 1072 */ 1073 history[(count + 1) % SYN_HIST_SIZE] = value; 1074 1075 return (rv); 1076 } 1077 1078 /* Edge detection */ 1079 #define SYN_EDGE_TOP 1 1080 #define SYN_EDGE_BOTTOM 2 1081 #define SYN_EDGE_LEFT 4 1082 #define SYN_EDGE_RIGHT 8 1083 1084 static inline int 1085 synaptics_check_edge(int x, int y) 1086 { 1087 int rv = 0; 1088 1089 if (x < synaptics_edge_left) 1090 rv |= SYN_EDGE_LEFT; 1091 else 1092 if (x > synaptics_edge_right) 1093 rv |= SYN_EDGE_RIGHT; 1094 1095 if (y < synaptics_edge_bottom) 1096 rv |= SYN_EDGE_BOTTOM; 1097 else 1098 if (y > synaptics_edge_top) 1099 rv |= SYN_EDGE_TOP; 1100 1101 return (rv); 1102 } 1103 1104 static inline int 1105 synaptics_edge_motion(struct synaptics_softc *sc, int delta, int dir) 1106 { 1107 1108 /* 1109 * When edge motion is enabled, synaptics_edge_motion_delta is 1110 * combined with the current delta, together with the direction 1111 * in which to simulate the motion. The result is added to 1112 * the delta derived from finger movement. This provides a smooth 1113 * transition from finger movement to edge motion. 1114 */ 1115 delta = synaptics_edge_motion_delta + (dir * delta); 1116 if (delta < 0) 1117 return (0); 1118 if (delta > synaptics_edge_motion_delta) 1119 return (synaptics_edge_motion_delta); 1120 return (delta); 1121 } 1122 1123 static inline int 1124 synaptics_scale(int delta, int scale, int *remp) 1125 { 1126 int rv; 1127 1128 /* 1129 * Scale the raw delta in Synaptics coordinates (0-6143) into 1130 * something more reasonable by dividing the raw delta by a 1131 * scale factor. Any remainder from the previous scale result 1132 * is added to the current delta before scaling. 1133 * This prevents loss of resolution for very small/slow 1134 * movements of the finger. 1135 */ 1136 delta += *remp; 1137 rv = delta / scale; 1138 *remp = delta % scale; 1139 1140 return (rv); 1141 } 1142 1143 static inline void 1144 synaptics_movement(struct synaptics_softc *sc, struct synaptics_packet *sp, 1145 int *dxp, int *dyp) 1146 { 1147 int dx, dy, edge; 1148 1149 /* 1150 * Compute the next values of dx and dy 1151 */ 1152 dx = synaptics_filter_policy(sc, sc->history_x, sp->sp_x); 1153 dy = synaptics_filter_policy(sc, sc->history_y, sp->sp_y); 1154 1155 /* 1156 * If we're dealing with a drag gesture, and the finger moves to 1157 * the edge of the touchpad, apply edge motion emulation if it 1158 * is enabled. 1159 */ 1160 if (synaptics_edge_motion_delta && SYN_IS_DRAG(sc->gesture_type)) { 1161 edge = synaptics_check_edge(sp->sp_x, sp->sp_y); 1162 1163 if (edge & SYN_EDGE_LEFT) 1164 dx -= synaptics_edge_motion(sc, dx, 1); 1165 if (edge & SYN_EDGE_RIGHT) 1166 dx += synaptics_edge_motion(sc, dx, -1); 1167 if (edge & SYN_EDGE_BOTTOM) 1168 dy -= synaptics_edge_motion(sc, dy, 1); 1169 if (edge & SYN_EDGE_TOP) 1170 dy += synaptics_edge_motion(sc, dy, -1); 1171 } 1172 1173 /* 1174 * Apply scaling to both deltas 1175 */ 1176 dx = synaptics_scale(dx, synaptics_scale_x, &sc->rem_x); 1177 dy = synaptics_scale(dy, synaptics_scale_y, &sc->rem_y); 1178 1179 /* 1180 * Clamp deltas to specified maximums. 1181 */ 1182 if (dx > synaptics_max_speed_x) 1183 dx = synaptics_max_speed_x; 1184 if (dy > synaptics_max_speed_y) 1185 dy = synaptics_max_speed_y; 1186 1187 *dxp = dx; 1188 *dyp = dy; 1189 1190 sc->movement_history++; 1191 } 1192 1193 static void 1194 pms_synaptics_process_packet(struct pms_softc *psc, struct synaptics_packet *sp) 1195 { 1196 struct synaptics_softc *sc = &psc->u.synaptics; 1197 int dx, dy, dz; 1198 int fingers, palm, buttons, changed; 1199 int s; 1200 1201 /* 1202 * Do Z-axis emulation using up/down buttons if required. 1203 * Note that the pad will send a one second burst of packets 1204 * when an up/down button is pressed and held. At the moment 1205 * we don't deal with auto-repeat, so convert the burst into 1206 * a one-shot. 1207 */ 1208 dz = 0; 1209 if (synaptics_up_down_emul == 2) { 1210 if (sc->up_down == 0) { 1211 if (sp->sp_up && sp->sp_down) { 1212 /* 1213 * Most up/down buttons will be actuated using 1214 * a rocker switch, so we should never see 1215 * them both simultaneously. But just in case, 1216 * treat this situation as a middle button 1217 * event. 1218 */ 1219 sp->sp_middle = 1; 1220 } else 1221 if (sp->sp_up) 1222 dz = -synaptics_up_down_motion_delta; 1223 else 1224 if (sp->sp_down) 1225 dz = synaptics_up_down_motion_delta; 1226 } 1227 1228 sc->up_down = sp->sp_up | sp->sp_down; 1229 sp->sp_up = sp->sp_down = 0; 1230 } 1231 1232 /* 1233 * Determine whether or not a finger is on the pad. 1234 * On some pads, this will return the number of fingers 1235 * detected. 1236 */ 1237 fingers = synaptics_finger_detect(sc, sp, &palm); 1238 1239 /* 1240 * Do gesture processing only if we didn't detect a palm. 1241 */ 1242 if (palm == 0) 1243 synaptics_gesture_detect(sc, sp, fingers); 1244 else 1245 sc->gesture_type = sc->gesture_buttons = 0; 1246 1247 /* 1248 * Determine what buttons to report 1249 */ 1250 buttons = (sp->sp_left ? 0x1 : 0) | 1251 (sp->sp_middle ? 0x2 : 0) | 1252 (sp->sp_right ? 0x4 : 0) | 1253 (sp->sp_up ? 0x8 : 0) | 1254 (sp->sp_down ? 0x10 : 0); 1255 changed = buttons ^ (psc->buttons & 0x1f); 1256 psc->buttons ^= changed; 1257 1258 sc->prev_fingers = fingers; 1259 sc->total_packets++; 1260 1261 /* 1262 * Do movement processing IFF we have a single finger and no palm. 1263 */ 1264 if (fingers == 1 && palm == 0) 1265 synaptics_movement(sc, sp, &dx, &dy); 1266 else { 1267 /* 1268 * No valid finger. Therefore no movement. 1269 */ 1270 sc->movement_history = 0; 1271 sc->rem_x = sc->rem_y = 0; 1272 dx = dy = 0; 1273 } 1274 1275 /* 1276 * Pass the final results up to wsmouse_input() if necessary. 1277 */ 1278 if (dx || dy || dz || changed) { 1279 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 1280 s = spltty(); 1281 wsmouse_input(psc->sc_wsmousedev, 1282 buttons, 1283 dx, dy, dz, 0, 1284 WSMOUSE_INPUT_DELTA); 1285 splx(s); 1286 } 1287 } 1288
Indexes created Fri Sep 26 20:09:58 GMT 2025