synaptics.c revision 1.27
1 /* $NetBSD: synaptics.c,v 1.27 2011/09/09 14:29:47 jakllsch 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 1.27 2011/09/09 14:29:47 jakllsch 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 /* 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_sliced_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 aprint_debug_dev(psc->sc_dev, 150 "synaptics_probe: Identify Touchpad error.\n"); 151 /* 152 * Reset device in case the probe confused it. 153 */ 154 doreset: 155 cmd[0] = PMS_RESET; 156 (void) pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 157 1, 2, resp, 1); 158 return (res); 159 } 160 161 if (resp[1] != SYNAPTICS_MAGIC_BYTE) { 162 aprint_debug_dev(psc->sc_dev, 163 "synaptics_probe: Not synaptics.\n"); 164 res = 1; 165 goto doreset; 166 } 167 168 sc->flags = 0; 169 170 /* Check for minimum version and print a nice message. */ 171 ver_major = resp[2] & 0x0f; 172 ver_minor = resp[0]; 173 aprint_normal_dev(psc->sc_dev, "Synaptics touchpad version %d.%d\n", 174 ver_major, ver_minor); 175 if (ver_major * 10 + ver_minor < SYNAPTICS_MIN_VERSION) { 176 /* No capability query support. */ 177 sc->caps = 0; 178 goto done; 179 } 180 181 /* Query the hardware capabilities. */ 182 res = pms_sliced_command(psc->sc_kbctag, psc->sc_kbcslot, 183 SYNAPTICS_READ_CAPABILITIES); 184 cmd[0] = PMS_SEND_DEV_STATUS; 185 res |= pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 3, 186 resp, 0); 187 if (res) { 188 /* Hmm, failed to get capabilites. */ 189 aprint_error_dev(psc->sc_dev, 190 "synaptics_probe: Failed to query capabilities.\n"); 191 goto doreset; 192 } 193 194 sc->caps = (resp[0] << 8) | resp[2]; 195 196 if (sc->caps & SYNAPTICS_CAP_MBUTTON) 197 sc->flags |= SYN_FLAG_HAS_MIDDLE_BUTTON; 198 199 if (sc->caps & SYNAPTICS_CAP_4BUTTON) 200 sc->flags |= SYN_FLAG_HAS_BUTTONS_4_5; 201 202 if (sc->caps & SYNAPTICS_CAP_EXTENDED) { 203 aprint_debug_dev(psc->sc_dev, 204 "synaptics_probe: Capabilities 0x%04x.\n", sc->caps); 205 if (sc->caps & SYNAPTICS_CAP_PASSTHROUGH) 206 sc->flags |= SYN_FLAG_HAS_PASSTHROUGH; 207 208 if (sc->caps & SYNAPTICS_CAP_PALMDETECT) 209 sc->flags |= SYN_FLAG_HAS_PALM_DETECT; 210 211 if (sc->caps & SYNAPTICS_CAP_MULTIDETECT) 212 sc->flags |= SYN_FLAG_HAS_MULTI_FINGER; 213 214 /* Ask about extra buttons to detect up/down. */ 215 if (sc->caps & SYNAPTICS_CAP_EXTNUM) { 216 res = pms_sliced_command(psc->sc_kbctag, 217 psc->sc_kbcslot, SYNAPTICS_EXTENDED_QUERY); 218 cmd[0] = PMS_SEND_DEV_STATUS; 219 res |= pckbport_poll_cmd(psc->sc_kbctag, 220 psc->sc_kbcslot, cmd, 1, 3, resp, 0); 221 if (res == 0) 222 aprint_debug_dev(psc->sc_dev, 223 "synaptics_probe: Extended " 224 "Capabilities 0x%02x.\n", resp[1]); 225 if (!res && (resp[1] >> 4) >= 2) { 226 /* Yes. */ 227 sc->flags |= SYN_FLAG_HAS_UP_DOWN_BUTTONS; 228 } 229 } 230 } 231 232 if (sc->flags) { 233 const char comma[] = ", "; 234 const char *sep = ""; 235 aprint_normal_dev(psc->sc_dev, ""); 236 if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) { 237 aprint_normal("%sPassthrough", sep); 238 sep = comma; 239 } 240 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 241 aprint_normal("%sMiddle button", sep); 242 sep = comma; 243 } 244 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 245 aprint_normal("%sButtons 4/5", sep); 246 sep = comma; 247 } 248 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS) { 249 aprint_normal("%sUp/down buttons", sep); 250 sep = comma; 251 } 252 if (sc->flags & SYN_FLAG_HAS_PALM_DETECT) { 253 aprint_normal("%sPalm detect", sep); 254 sep = comma; 255 } 256 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER) 257 aprint_normal("%sMulti-finger", sep); 258 259 aprint_normal("\n"); 260 } 261 262 done: 263 pms_sysctl_synaptics(&clog); 264 pckbport_set_inputhandler(psc->sc_kbctag, psc->sc_kbcslot, 265 pms_synaptics_input, psc, device_xname(psc->sc_dev)); 266 267 return (0); 268 } 269 270 void 271 pms_synaptics_enable(void *vsc) 272 { 273 struct pms_softc *psc = vsc; 274 struct synaptics_softc *sc = &psc->u.synaptics; 275 u_char cmd[2], resp[2]; 276 int res; 277 278 if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) { 279 /* 280 * Extended capability probes can confuse the passthrough device; 281 * reset the touchpad now to cure that. 282 */ 283 cmd[0] = PMS_RESET; 284 res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 285 1, 2, resp, 1); 286 } 287 288 /* 289 * Enable Absolute mode with W (width) reporting, and set 290 * the packet rate to maximum (80 packets per second). 291 */ 292 res = pms_sliced_command(psc->sc_kbctag, psc->sc_kbcslot, 293 SYNAPTICS_MODE_ABSOLUTE | SYNAPTICS_MODE_W | SYNAPTICS_MODE_RATE); 294 cmd[0] = PMS_SET_SAMPLE; 295 cmd[1] = SYNAPTICS_CMD_SET_MODE2; 296 res |= pckbport_enqueue_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 2, 0, 297 1, NULL); 298 sc->up_down = 0; 299 sc->prev_fingers = 0; 300 sc->gesture_start_x = sc->gesture_start_y = 0; 301 sc->gesture_start_packet = 0; 302 sc->gesture_tap_packet = 0; 303 sc->gesture_type = 0; 304 sc->gesture_buttons = 0; 305 sc->rem_x = sc->rem_y = 0; 306 sc->movement_history = 0; 307 if (res) { 308 aprint_error_dev(psc->sc_dev, 309 "synaptics_enable: Error enabling device.\n"); 310 } 311 } 312 313 void 314 pms_synaptics_resume(void *vsc) 315 { 316 struct pms_softc *psc = vsc; 317 unsigned char cmd[1],resp[2] = { 0,0 }; 318 int res; 319 320 cmd[0] = PMS_RESET; 321 res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 2, 322 resp, 1); 323 aprint_debug_dev(psc->sc_dev, 324 "pms_synaptics_resume: reset on resume %d 0x%02x 0x%02x\n", 325 res, resp[0], resp[1]); 326 } 327 328 static void 329 pms_sysctl_synaptics(struct sysctllog **clog) 330 { 331 int rc, root_num; 332 const struct sysctlnode *node; 333 334 if ((rc = sysctl_createv(clog, 0, NULL, NULL, 335 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 336 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 337 goto err; 338 339 if ((rc = sysctl_createv(clog, 0, NULL, &node, 340 CTLFLAG_PERMANENT, CTLTYPE_NODE, "synaptics", 341 SYSCTL_DESCR("Synaptics touchpad controls"), 342 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 343 goto err; 344 345 root_num = node->sysctl_num; 346 347 if ((rc = sysctl_createv(clog, 0, NULL, &node, 348 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 349 CTLTYPE_INT, "up_down_emulation", 350 SYSCTL_DESCR("Middle button/Z-axis emulation with up/down buttons"), 351 pms_sysctl_synaptics_verify, 0, 352 &synaptics_up_down_emul, 353 0, CTL_HW, root_num, CTL_CREATE, 354 CTL_EOL)) != 0) 355 goto err; 356 357 synaptics_up_down_emul_nodenum = node->sysctl_num; 358 359 if ((rc = sysctl_createv(clog, 0, NULL, &node, 360 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 361 CTLTYPE_INT, "up_down_motion_delta", 362 SYSCTL_DESCR("Up/down button Z-axis emulation rate"), 363 pms_sysctl_synaptics_verify, 0, 364 &synaptics_up_down_motion_delta, 365 0, CTL_HW, root_num, CTL_CREATE, 366 CTL_EOL)) != 0) 367 goto err; 368 369 synaptics_up_down_motion_delta_nodenum = node->sysctl_num; 370 371 if ((rc = sysctl_createv(clog, 0, NULL, &node, 372 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 373 CTLTYPE_INT, "gesture_move", 374 SYSCTL_DESCR("Movement greater than this between taps cancels gesture"), 375 pms_sysctl_synaptics_verify, 0, 376 &synaptics_gesture_move, 377 0, CTL_HW, root_num, CTL_CREATE, 378 CTL_EOL)) != 0) 379 goto err; 380 381 synaptics_gesture_move_nodenum = node->sysctl_num; 382 383 if ((rc = sysctl_createv(clog, 0, NULL, &node, 384 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 385 CTLTYPE_INT, "gesture_length", 386 SYSCTL_DESCR("Time period in which tap is recognised as a gesture"), 387 pms_sysctl_synaptics_verify, 0, 388 &synaptics_gesture_length, 389 0, CTL_HW, root_num, CTL_CREATE, 390 CTL_EOL)) != 0) 391 goto err; 392 393 synaptics_gesture_length_nodenum = node->sysctl_num; 394 395 if ((rc = sysctl_createv(clog, 0, NULL, &node, 396 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 397 CTLTYPE_INT, "edge_left", 398 SYSCTL_DESCR("Define left edge of touchpad"), 399 pms_sysctl_synaptics_verify, 0, 400 &synaptics_edge_left, 401 0, CTL_HW, root_num, CTL_CREATE, 402 CTL_EOL)) != 0) 403 goto err; 404 405 synaptics_edge_left_nodenum = node->sysctl_num; 406 407 if ((rc = sysctl_createv(clog, 0, NULL, &node, 408 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 409 CTLTYPE_INT, "edge_right", 410 SYSCTL_DESCR("Define right edge of touchpad"), 411 pms_sysctl_synaptics_verify, 0, 412 &synaptics_edge_right, 413 0, CTL_HW, root_num, CTL_CREATE, 414 CTL_EOL)) != 0) 415 goto err; 416 417 synaptics_edge_right_nodenum = node->sysctl_num; 418 419 if ((rc = sysctl_createv(clog, 0, NULL, &node, 420 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 421 CTLTYPE_INT, "edge_top", 422 SYSCTL_DESCR("Define top edge of touchpad"), 423 pms_sysctl_synaptics_verify, 0, 424 &synaptics_edge_top, 425 0, CTL_HW, root_num, CTL_CREATE, 426 CTL_EOL)) != 0) 427 goto err; 428 429 synaptics_edge_top_nodenum = node->sysctl_num; 430 431 if ((rc = sysctl_createv(clog, 0, NULL, &node, 432 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 433 CTLTYPE_INT, "edge_bottom", 434 SYSCTL_DESCR("Define bottom edge of touchpad"), 435 pms_sysctl_synaptics_verify, 0, 436 &synaptics_edge_bottom, 437 0, CTL_HW, root_num, CTL_CREATE, 438 CTL_EOL)) != 0) 439 goto err; 440 441 synaptics_edge_bottom_nodenum = node->sysctl_num; 442 443 if ((rc = sysctl_createv(clog, 0, NULL, &node, 444 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 445 CTLTYPE_INT, "edge_motion_delta", 446 SYSCTL_DESCR("Define edge motion rate"), 447 pms_sysctl_synaptics_verify, 0, 448 &synaptics_edge_motion_delta, 449 0, CTL_HW, root_num, CTL_CREATE, 450 CTL_EOL)) != 0) 451 goto err; 452 453 synaptics_edge_motion_delta_nodenum = node->sysctl_num; 454 455 if ((rc = sysctl_createv(clog, 0, NULL, &node, 456 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 457 CTLTYPE_INT, "finger_high", 458 SYSCTL_DESCR("Define finger applied pressure threshold"), 459 pms_sysctl_synaptics_verify, 0, 460 &synaptics_finger_high, 461 0, CTL_HW, root_num, CTL_CREATE, 462 CTL_EOL)) != 0) 463 goto err; 464 465 synaptics_finger_high_nodenum = node->sysctl_num; 466 467 if ((rc = sysctl_createv(clog, 0, NULL, &node, 468 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 469 CTLTYPE_INT, "finger_low", 470 SYSCTL_DESCR("Define finger removed pressure threshold"), 471 pms_sysctl_synaptics_verify, 0, 472 &synaptics_finger_low, 473 0, CTL_HW, root_num, CTL_CREATE, 474 CTL_EOL)) != 0) 475 goto err; 476 477 synaptics_finger_low_nodenum = node->sysctl_num; 478 479 if ((rc = sysctl_createv(clog, 0, NULL, &node, 480 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 481 CTLTYPE_INT, "two_fingers_emulation", 482 SYSCTL_DESCR("Map two fingers to middle button"), 483 pms_sysctl_synaptics_verify, 0, 484 &synaptics_two_fingers_emul, 485 0, CTL_HW, root_num, CTL_CREATE, 486 CTL_EOL)) != 0) 487 goto err; 488 489 synaptics_two_fingers_emul_nodenum = node->sysctl_num; 490 491 if ((rc = sysctl_createv(clog, 0, NULL, &node, 492 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 493 CTLTYPE_INT, "scale_x", 494 SYSCTL_DESCR("Horizontal movement scale factor"), 495 pms_sysctl_synaptics_verify, 0, 496 &synaptics_scale_x, 497 0, CTL_HW, root_num, CTL_CREATE, 498 CTL_EOL)) != 0) 499 goto err; 500 501 synaptics_scale_x_nodenum = node->sysctl_num; 502 503 if ((rc = sysctl_createv(clog, 0, NULL, &node, 504 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 505 CTLTYPE_INT, "scale_y", 506 SYSCTL_DESCR("Vertical movement scale factor"), 507 pms_sysctl_synaptics_verify, 0, 508 &synaptics_scale_y, 509 0, CTL_HW, root_num, CTL_CREATE, 510 CTL_EOL)) != 0) 511 goto err; 512 513 synaptics_scale_y_nodenum = node->sysctl_num; 514 515 if ((rc = sysctl_createv(clog, 0, NULL, &node, 516 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 517 CTLTYPE_INT, "max_speed_x", 518 SYSCTL_DESCR("Horizontal movement maximum speed"), 519 pms_sysctl_synaptics_verify, 0, 520 &synaptics_max_speed_x, 521 0, CTL_HW, root_num, CTL_CREATE, 522 CTL_EOL)) != 0) 523 goto err; 524 525 synaptics_max_speed_x_nodenum = node->sysctl_num; 526 527 if ((rc = sysctl_createv(clog, 0, NULL, &node, 528 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 529 CTLTYPE_INT, "max_speed_y", 530 SYSCTL_DESCR("Vertical movement maximum speed"), 531 pms_sysctl_synaptics_verify, 0, 532 &synaptics_max_speed_y, 533 0, CTL_HW, root_num, CTL_CREATE, 534 CTL_EOL)) != 0) 535 goto err; 536 537 synaptics_max_speed_y_nodenum = node->sysctl_num; 538 539 if ((rc = sysctl_createv(clog, 0, NULL, &node, 540 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 541 CTLTYPE_INT, "movement_threshold", 542 SYSCTL_DESCR("Minimum reported movement threshold"), 543 pms_sysctl_synaptics_verify, 0, 544 &synaptics_movement_threshold, 545 0, CTL_HW, root_num, CTL_CREATE, 546 CTL_EOL)) != 0) 547 goto err; 548 549 synaptics_movement_threshold_nodenum = node->sysctl_num; 550 return; 551 552 err: 553 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 554 } 555 556 static int 557 pms_sysctl_synaptics_verify(SYSCTLFN_ARGS) 558 { 559 int error, t; 560 struct sysctlnode node; 561 562 node = *rnode; 563 t = *(int *)rnode->sysctl_data; 564 node.sysctl_data = &t; 565 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 566 if (error || newp == NULL) 567 return error; 568 569 /* Sanity check the params. */ 570 if (node.sysctl_num == synaptics_up_down_emul_nodenum || 571 node.sysctl_num == synaptics_two_fingers_emul_nodenum) { 572 if (t < 0 || t > 2) 573 return (EINVAL); 574 } else 575 if (node.sysctl_num == synaptics_gesture_length_nodenum || 576 node.sysctl_num == synaptics_edge_motion_delta_nodenum || 577 node.sysctl_num == synaptics_up_down_motion_delta_nodenum) { 578 if (t < 0) 579 return (EINVAL); 580 } else 581 if (node.sysctl_num == synaptics_edge_left_nodenum || 582 node.sysctl_num == synaptics_edge_bottom_nodenum) { 583 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 2)) 584 return (EINVAL); 585 } else 586 if (node.sysctl_num == synaptics_edge_right_nodenum || 587 node.sysctl_num == synaptics_edge_top_nodenum) { 588 if (t < (SYNAPTICS_EDGE_MAX / 2)) 589 return (EINVAL); 590 } else 591 if (node.sysctl_num == synaptics_scale_x_nodenum || 592 node.sysctl_num == synaptics_scale_y_nodenum) { 593 if (t < 1 || t > (SYNAPTICS_EDGE_MAX / 4)) 594 return (EINVAL); 595 } else 596 if (node.sysctl_num == synaptics_finger_high_nodenum) { 597 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 598 t < synaptics_finger_low) 599 return (EINVAL); 600 } else 601 if (node.sysctl_num == synaptics_finger_low_nodenum) { 602 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 603 t > synaptics_finger_high) 604 return (EINVAL); 605 } else 606 if (node.sysctl_num == synaptics_gesture_move_nodenum || 607 node.sysctl_num == synaptics_movement_threshold_nodenum) { 608 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 4)) 609 return (EINVAL); 610 } else 611 return (EINVAL); 612 613 *(int *)rnode->sysctl_data = t; 614 615 return (0); 616 } 617 618 /* Masks for the first byte of a packet */ 619 #define PMS_LBUTMASK 0x01 620 #define PMS_RBUTMASK 0x02 621 #define PMS_MBUTMASK 0x04 622 623 static void 624 pms_synaptics_parse(struct pms_softc *psc) 625 { 626 struct synaptics_softc *sc = &psc->u.synaptics; 627 struct synaptics_packet sp; 628 629 /* Absolute X/Y coordinates of finger */ 630 sp.sp_x = psc->packet[4] + ((psc->packet[1] & 0x0f) << 8) + 631 ((psc->packet[3] & 0x10) << 8); 632 sp.sp_y = psc->packet[5] + ((psc->packet[1] & 0xf0) << 4) + 633 ((psc->packet[3] & 0x20) << 7); 634 635 /* Pressure */ 636 sp.sp_z = psc->packet[2]; 637 638 /* Width of finger */ 639 sp.sp_w = ((psc->packet[0] & 0x30) >> 2) + 640 ((psc->packet[0] & 0x04) >> 1) + 641 ((psc->packet[3] & 0x04) >> 2); 642 643 /* Left/Right button handling. */ 644 sp.sp_left = psc->packet[0] & PMS_LBUTMASK; 645 sp.sp_right = psc->packet[0] & PMS_RBUTMASK; 646 647 /* Up/Down buttons. */ 648 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 649 /* Old up/down buttons. */ 650 sp.sp_up = sp.sp_left ^ 651 (psc->packet[3] & PMS_LBUTMASK); 652 sp.sp_down = sp.sp_right ^ 653 (psc->packet[3] & PMS_RBUTMASK); 654 } else 655 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS && 656 ((psc->packet[0] & PMS_RBUTMASK) ^ 657 (psc->packet[3] & PMS_RBUTMASK))) { 658 /* New up/down button. */ 659 sp.sp_up = psc->packet[4] & SYN_1BUTMASK; 660 sp.sp_down = psc->packet[5] & SYN_2BUTMASK; 661 } else { 662 sp.sp_up = 0; 663 sp.sp_down = 0; 664 } 665 666 /* Middle button. */ 667 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 668 /* Old style Middle Button. */ 669 sp.sp_middle = (psc->packet[0] & PMS_LBUTMASK) ^ 670 (psc->packet[3] & PMS_LBUTMASK); 671 } else 672 if (synaptics_up_down_emul == 1) { 673 /* Do middle button emulation using up/down buttons */ 674 sp.sp_middle = sp.sp_up | sp.sp_down; 675 sp.sp_up = sp.sp_down = 0; 676 } else 677 sp.sp_middle = 0; 678 679 pms_synaptics_process_packet(psc, &sp); 680 } 681 682 static void 683 pms_synaptics_passthrough(struct pms_softc *psc) 684 { 685 int dx, dy, dz; 686 int buttons, changed; 687 int s; 688 689 buttons = ((psc->packet[1] & PMS_LBUTMASK) ? 0x20 : 0) | 690 ((psc->packet[1] & PMS_MBUTMASK) ? 0x40 : 0) | 691 ((psc->packet[1] & PMS_RBUTMASK) ? 0x80 : 0); 692 693 dx = psc->packet[4]; 694 if (dx >= 128) 695 dx -= 256; 696 if (dx == -128) 697 dx = -127; 698 699 dy = psc->packet[5]; 700 if (dy >= 128) 701 dy -= 256; 702 if (dy == -128) 703 dy = -127; 704 705 dz = 0; 706 707 changed = buttons ^ (psc->buttons & 0xe0); 708 psc->buttons ^= changed; 709 710 if (dx || dy || dz || changed) { 711 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 712 s = spltty(); 713 wsmouse_input(psc->sc_wsmousedev, 714 buttons, dx, dy, dz, 0, 715 WSMOUSE_INPUT_DELTA); 716 splx(s); 717 } 718 } 719 720 static void 721 pms_synaptics_input(void *vsc, int data) 722 { 723 struct pms_softc *psc = vsc; 724 struct timeval diff; 725 726 if (!psc->sc_enabled) { 727 /* Interrupts are not expected. Discard the byte. */ 728 return; 729 } 730 731 getmicrouptime(&psc->current); 732 733 if (psc->inputstate > 0) { 734 timersub(&psc->current, &psc->last, &diff); 735 if (diff.tv_sec > 0 || diff.tv_usec >= 40000) { 736 aprint_debug_dev(psc->sc_dev, 737 "pms_input: unusual delay (%ld.%06ld s), " 738 "scheduling reset\n", 739 (long)diff.tv_sec, (long)diff.tv_usec); 740 psc->inputstate = 0; 741 psc->sc_enabled = 0; 742 wakeup(&psc->sc_enabled); 743 return; 744 } 745 } 746 psc->last = psc->current; 747 748 switch (psc->inputstate) { 749 case 0: 750 if ((data & 0xc8) != 0x80) { 751 aprint_debug_dev(psc->sc_dev, 752 "pms_input: 0x%02x out of sync\n", data); 753 return; /* not in sync yet, discard input */ 754 } 755 /*FALLTHROUGH*/ 756 757 case 3: 758 if ((data & 8) == 8) { 759 aprint_debug_dev(psc->sc_dev, 760 "pms_input: dropped in relative mode, reset\n"); 761 psc->inputstate = 0; 762 psc->sc_enabled = 0; 763 wakeup(&psc->sc_enabled); 764 return; 765 } 766 } 767 768 psc->packet[psc->inputstate++] = data & 0xff; 769 if (psc->inputstate == 6) { 770 /* 771 * We have a complete packet. 772 * Extract the pertinent details. 773 */ 774 psc->inputstate = 0; 775 776 if ((psc->packet[0] & 0xfc) == 0x84 && 777 (psc->packet[3] & 0xcc) == 0xc4) { 778 /* PS/2 passthrough */ 779 pms_synaptics_passthrough(psc); 780 } else { 781 pms_synaptics_parse(psc); 782 } 783 } 784 } 785 786 static inline int 787 synaptics_finger_detect(struct synaptics_softc *sc, struct synaptics_packet *sp, 788 int *palmp) 789 { 790 int fingers; 791 792 /* Assume no palm */ 793 *palmp = 0; 794 795 /* 796 * Apply some hysteresis when checking for a finger. 797 * When the finger is first applied, we ignore it until the 798 * pressure exceeds the 'high' threshold. The finger is considered 799 * removed only when pressure falls beneath the 'low' threshold. 800 */ 801 if ((sc->prev_fingers == 0 && sp->sp_z > synaptics_finger_high) || 802 (sc->prev_fingers != 0 && sp->sp_z > synaptics_finger_low)) 803 fingers = 1; 804 else 805 fingers = 0; 806 807 /* 808 * If the pad can't do palm detection, skip the rest. 809 */ 810 if (fingers == 0 || (sc->flags & SYN_FLAG_HAS_PALM_DETECT) == 0) 811 return (fingers); 812 813 /* 814 * Palm detection 815 */ 816 if (sp->sp_z > SYNAPTICS_FINGER_FLAT && 817 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN) 818 *palmp = 1; 819 820 if (sc->prev_fingers == 0 && 821 (sp->sp_z > SYNAPTICS_FINGER_FLAT || 822 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN)) { 823 /* 824 * Contact area or pressure is too great to be a finger. 825 * Just ignore it for now. 826 */ 827 return (0); 828 } 829 830 /* 831 * Detect 2 and 3 fingers if supported, but only if multiple 832 * fingers appear within the tap gesture time period. 833 */ 834 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER && 835 SYN_TIME(sc, sc->gesture_start_packet) < synaptics_gesture_length) { 836 switch (sp->sp_w) { 837 case SYNAPTICS_WIDTH_TWO_FINGERS: 838 fingers = 2; 839 break; 840 841 case SYNAPTICS_WIDTH_THREE_OR_MORE: 842 fingers = 3; 843 break; 844 845 case SYNAPTICS_WIDTH_PEN: 846 fingers = 1; 847 break; 848 849 default: 850 /* 851 * The width value can report spurious single-finger 852 * events after a multi-finger event. 853 */ 854 if (sc->prev_fingers > 1) 855 fingers = sc->prev_fingers; 856 else 857 fingers = 1; 858 break; 859 } 860 } 861 862 return (fingers); 863 } 864 865 static inline void 866 synaptics_gesture_detect(struct synaptics_softc *sc, 867 struct synaptics_packet *sp, int fingers) 868 { 869 int gesture_len, gesture_move_x, gesture_move_y, gesture_buttons; 870 int set_buttons; 871 872 gesture_len = SYN_TIME(sc, sc->gesture_start_packet); 873 gesture_buttons = sc->gesture_buttons; 874 875 if (fingers && sc->prev_fingers == 0) { 876 /* 877 * Finger was just applied. 878 * If the previous gesture was a single-click, set things 879 * up to deal with a possible drag or double-click gesture. 880 * Basically, if the finger is removed again within 881 * 'synaptics_gesture_length' packets, this is treated 882 * as a double-click. Otherwise we will emulate holding 883 * the left button down whilst dragging the mouse. 884 */ 885 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) 886 sc->gesture_type |= SYN_GESTURE_DRAG; 887 888 sc->gesture_start_x = sp->sp_x; 889 sc->gesture_start_y = sp->sp_y; 890 sc->gesture_start_packet = sc->total_packets; 891 } else 892 if (fingers == 0 && sc->prev_fingers != 0) { 893 /* 894 * Finger was just removed. 895 * Check if the contact time and finger movement were 896 * small enough to qualify as a gesture. 897 * Ignore finger movement if multiple fingers were 898 * detected (the pad may report coordinates for any 899 * of the fingers). 900 */ 901 gesture_move_x = abs(sc->gesture_start_x - sp->sp_x); 902 gesture_move_y = abs(sc->gesture_start_y - sp->sp_y); 903 904 if (gesture_len < synaptics_gesture_length && 905 (sc->prev_fingers > 1 || 906 (gesture_move_x < synaptics_gesture_move && 907 gesture_move_y < synaptics_gesture_move))) { 908 /* 909 * Looking good so far. 910 */ 911 if (SYN_IS_DRAG(sc->gesture_type)) { 912 /* 913 * Promote this gesture to double-click. 914 */ 915 sc->gesture_type |= SYN_GESTURE_DOUBLE; 916 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 917 } else { 918 /* 919 * Single tap gesture. Set the tap length timer 920 * and flag a single-click. 921 */ 922 sc->gesture_tap_packet = sc->total_packets; 923 sc->gesture_type |= SYN_GESTURE_SINGLE; 924 925 /* 926 * The gesture can be modified depending on 927 * the number of fingers detected. 928 * 929 * 1: Normal left button emulation. 930 * 2: Either middle button or right button 931 * depending on the value of the two_fingers 932 * sysctl variable. 933 * 3: Right button. 934 */ 935 switch (sc->prev_fingers) { 936 case 2: 937 if (synaptics_two_fingers_emul == 1) 938 gesture_buttons |= PMS_RBUTMASK; 939 else 940 if (synaptics_two_fingers_emul == 2) 941 gesture_buttons |= PMS_MBUTMASK; 942 break; 943 case 3: 944 gesture_buttons |= PMS_RBUTMASK; 945 break; 946 default: 947 gesture_buttons |= PMS_LBUTMASK; 948 break; 949 } 950 } 951 } 952 953 /* 954 * Always clear drag state when the finger is removed. 955 */ 956 sc->gesture_type &= ~SYN_GESTURE_DRAG; 957 } 958 959 if (sc->gesture_type == 0) { 960 /* 961 * There is no gesture in progress. 962 * Clear emulated button state. 963 */ 964 sc->gesture_buttons = 0; 965 return; 966 } 967 968 /* 969 * A gesture is in progress. 970 */ 971 set_buttons = 0; 972 973 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) { 974 /* 975 * Single-click. 976 * Activate the relevant button(s) until the 977 * gesture tap timer has expired. 978 */ 979 if (SYN_TIME(sc, sc->gesture_tap_packet) < 980 synaptics_gesture_length) 981 set_buttons = 1; 982 else 983 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 984 } else 985 if (SYN_IS_DOUBLE_TAP(sc->gesture_type) && sc->prev_fingers == 0) { 986 /* 987 * Double-click. 988 * Activate the relevant button(s) once. 989 */ 990 set_buttons = 1; 991 sc->gesture_type &= ~SYN_GESTURE_DOUBLE; 992 } 993 994 if (set_buttons || SYN_IS_DRAG(sc->gesture_type)) { 995 /* 996 * Single-click and drag. 997 * Maintain button state until the finger is removed. 998 */ 999 sp->sp_left |= gesture_buttons & PMS_LBUTMASK; 1000 sp->sp_right |= gesture_buttons & PMS_RBUTMASK; 1001 sp->sp_middle |= gesture_buttons & PMS_MBUTMASK; 1002 } 1003 1004 sc->gesture_buttons = gesture_buttons; 1005 } 1006 1007 static inline int 1008 synaptics_filter_policy(struct synaptics_softc *sc, int *history, int value) 1009 { 1010 int a, b, rv, count; 1011 1012 count = sc->total_packets; 1013 1014 /* 1015 * Once we've accumulated at least SYN_HIST_SIZE values, combine 1016 * each new value with the previous two and return the average. 1017 * 1018 * This is necessary when the touchpad is operating in 80 packets 1019 * per second mode, as it performs little internal filtering on 1020 * reported values. 1021 * 1022 * Using a rolling average helps to filter out jitter caused by 1023 * tiny finger movements. 1024 */ 1025 if (sc->movement_history >= SYN_HIST_SIZE) { 1026 a = (history[(count + 0) % SYN_HIST_SIZE] + 1027 history[(count + 1) % SYN_HIST_SIZE]) / 2; 1028 1029 b = (value + history[(count + 0) % SYN_HIST_SIZE]) / 2; 1030 1031 rv = b - a; 1032 1033 /* 1034 * Don't report the movement if it's below a certain 1035 * threshold. 1036 */ 1037 if (abs(rv) < synaptics_movement_threshold) 1038 rv = 0; 1039 } else 1040 rv = 0; 1041 1042 /* 1043 * Add the new value to the history buffer. 1044 */ 1045 history[(count + 1) % SYN_HIST_SIZE] = value; 1046 1047 return (rv); 1048 } 1049 1050 /* Edge detection */ 1051 #define SYN_EDGE_TOP 1 1052 #define SYN_EDGE_BOTTOM 2 1053 #define SYN_EDGE_LEFT 4 1054 #define SYN_EDGE_RIGHT 8 1055 1056 static inline int 1057 synaptics_check_edge(int x, int y) 1058 { 1059 int rv = 0; 1060 1061 if (x < synaptics_edge_left) 1062 rv |= SYN_EDGE_LEFT; 1063 else 1064 if (x > synaptics_edge_right) 1065 rv |= SYN_EDGE_RIGHT; 1066 1067 if (y < synaptics_edge_bottom) 1068 rv |= SYN_EDGE_BOTTOM; 1069 else 1070 if (y > synaptics_edge_top) 1071 rv |= SYN_EDGE_TOP; 1072 1073 return (rv); 1074 } 1075 1076 static inline int 1077 synaptics_edge_motion(struct synaptics_softc *sc, int delta, int dir) 1078 { 1079 1080 /* 1081 * When edge motion is enabled, synaptics_edge_motion_delta is 1082 * combined with the current delta, together with the direction 1083 * in which to simulate the motion. The result is added to 1084 * the delta derived from finger movement. This provides a smooth 1085 * transition from finger movement to edge motion. 1086 */ 1087 delta = synaptics_edge_motion_delta + (dir * delta); 1088 if (delta < 0) 1089 return (0); 1090 if (delta > synaptics_edge_motion_delta) 1091 return (synaptics_edge_motion_delta); 1092 return (delta); 1093 } 1094 1095 static inline int 1096 synaptics_scale(int delta, int scale, int *remp) 1097 { 1098 int rv; 1099 1100 /* 1101 * Scale the raw delta in Synaptics coordinates (0-6143) into 1102 * something more reasonable by dividing the raw delta by a 1103 * scale factor. Any remainder from the previous scale result 1104 * is added to the current delta before scaling. 1105 * This prevents loss of resolution for very small/slow 1106 * movements of the finger. 1107 */ 1108 delta += *remp; 1109 rv = delta / scale; 1110 *remp = delta % scale; 1111 1112 return (rv); 1113 } 1114 1115 static inline void 1116 synaptics_movement(struct synaptics_softc *sc, struct synaptics_packet *sp, 1117 int *dxp, int *dyp) 1118 { 1119 int dx, dy, edge; 1120 1121 /* 1122 * Compute the next values of dx and dy 1123 */ 1124 dx = synaptics_filter_policy(sc, sc->history_x, sp->sp_x); 1125 dy = synaptics_filter_policy(sc, sc->history_y, sp->sp_y); 1126 1127 /* 1128 * If we're dealing with a drag gesture, and the finger moves to 1129 * the edge of the touchpad, apply edge motion emulation if it 1130 * is enabled. 1131 */ 1132 if (synaptics_edge_motion_delta && SYN_IS_DRAG(sc->gesture_type)) { 1133 edge = synaptics_check_edge(sp->sp_x, sp->sp_y); 1134 1135 if (edge & SYN_EDGE_LEFT) 1136 dx -= synaptics_edge_motion(sc, dx, 1); 1137 if (edge & SYN_EDGE_RIGHT) 1138 dx += synaptics_edge_motion(sc, dx, -1); 1139 if (edge & SYN_EDGE_BOTTOM) 1140 dy -= synaptics_edge_motion(sc, dy, 1); 1141 if (edge & SYN_EDGE_TOP) 1142 dy += synaptics_edge_motion(sc, dy, -1); 1143 } 1144 1145 /* 1146 * Apply scaling to both deltas 1147 */ 1148 dx = synaptics_scale(dx, synaptics_scale_x, &sc->rem_x); 1149 dy = synaptics_scale(dy, synaptics_scale_y, &sc->rem_y); 1150 1151 /* 1152 * Clamp deltas to specified maximums. 1153 */ 1154 if (dx > synaptics_max_speed_x) 1155 dx = synaptics_max_speed_x; 1156 if (dy > synaptics_max_speed_y) 1157 dy = synaptics_max_speed_y; 1158 1159 *dxp = dx; 1160 *dyp = dy; 1161 1162 sc->movement_history++; 1163 } 1164 1165 static void 1166 pms_synaptics_process_packet(struct pms_softc *psc, struct synaptics_packet *sp) 1167 { 1168 struct synaptics_softc *sc = &psc->u.synaptics; 1169 int dx, dy, dz; 1170 int fingers, palm, buttons, changed; 1171 int s; 1172 1173 /* 1174 * Do Z-axis emulation using up/down buttons if required. 1175 * Note that the pad will send a one second burst of packets 1176 * when an up/down button is pressed and held. At the moment 1177 * we don't deal with auto-repeat, so convert the burst into 1178 * a one-shot. 1179 */ 1180 dz = 0; 1181 if (synaptics_up_down_emul == 2) { 1182 if (sc->up_down == 0) { 1183 if (sp->sp_up && sp->sp_down) { 1184 /* 1185 * Most up/down buttons will be actuated using 1186 * a rocker switch, so we should never see 1187 * them both simultaneously. But just in case, 1188 * treat this situation as a middle button 1189 * event. 1190 */ 1191 sp->sp_middle = 1; 1192 } else 1193 if (sp->sp_up) 1194 dz = -synaptics_up_down_motion_delta; 1195 else 1196 if (sp->sp_down) 1197 dz = synaptics_up_down_motion_delta; 1198 } 1199 1200 sc->up_down = sp->sp_up | sp->sp_down; 1201 sp->sp_up = sp->sp_down = 0; 1202 } 1203 1204 /* 1205 * Determine whether or not a finger is on the pad. 1206 * On some pads, this will return the number of fingers 1207 * detected. 1208 */ 1209 fingers = synaptics_finger_detect(sc, sp, &palm); 1210 1211 /* 1212 * Do gesture processing only if we didn't detect a palm. 1213 */ 1214 if (palm == 0) 1215 synaptics_gesture_detect(sc, sp, fingers); 1216 else 1217 sc->gesture_type = sc->gesture_buttons = 0; 1218 1219 /* 1220 * Determine what buttons to report 1221 */ 1222 buttons = (sp->sp_left ? 0x1 : 0) | 1223 (sp->sp_middle ? 0x2 : 0) | 1224 (sp->sp_right ? 0x4 : 0) | 1225 (sp->sp_up ? 0x8 : 0) | 1226 (sp->sp_down ? 0x10 : 0); 1227 changed = buttons ^ (psc->buttons & 0x1f); 1228 psc->buttons ^= changed; 1229 1230 sc->prev_fingers = fingers; 1231 sc->total_packets++; 1232 1233 /* 1234 * Do movement processing IFF we have a single finger and no palm. 1235 */ 1236 if (fingers == 1 && palm == 0) 1237 synaptics_movement(sc, sp, &dx, &dy); 1238 else { 1239 /* 1240 * No valid finger. Therefore no movement. 1241 */ 1242 sc->movement_history = 0; 1243 sc->rem_x = sc->rem_y = 0; 1244 dx = dy = 0; 1245 } 1246 1247 /* 1248 * Pass the final results up to wsmouse_input() if necessary. 1249 */ 1250 if (dx || dy || dz || changed) { 1251 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 1252 s = spltty(); 1253 wsmouse_input(psc->sc_wsmousedev, 1254 buttons, 1255 dx, dy, dz, 0, 1256 WSMOUSE_INPUT_DELTA); 1257 splx(s); 1258 } 1259 } 1260
Indexes created Sat Sep 27 14:09:57 GMT 2025