synaptics.c revision 1.23
1 /* $NetBSD: synaptics.c,v 1.23 2010/03/21 19:57:05 plunky 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 1.23 2010/03/21 19:57:05 plunky 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_PASSTHROUGH) { 245 aprint_normal("%sPassthrough", sep); 246 sep = comma; 247 } 248 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 249 aprint_normal("%sMiddle button", sep); 250 sep = comma; 251 } 252 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 253 aprint_normal("%sButtons 4/5", sep); 254 sep = comma; 255 } 256 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS) { 257 aprint_normal("%sUp/down buttons", sep); 258 sep = comma; 259 } 260 if (sc->flags & SYN_FLAG_HAS_PALM_DETECT) { 261 aprint_normal("%sPalm detect", sep); 262 sep = comma; 263 } 264 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER) 265 aprint_normal("%sMulti-finger", sep); 266 267 aprint_normal("\n"); 268 } 269 270 done: 271 pms_sysctl_synaptics(&clog); 272 pckbport_set_inputhandler(psc->sc_kbctag, psc->sc_kbcslot, 273 pms_synaptics_input, psc, device_xname(psc->sc_dev)); 274 275 return (0); 276 } 277 278 void 279 pms_synaptics_enable(void *vsc) 280 { 281 struct pms_softc *psc = vsc; 282 struct synaptics_softc *sc = &psc->u.synaptics; 283 u_char cmd[2], resp[2]; 284 int res; 285 286 if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) { 287 /* 288 * Extended capability probes can confuse the passthrough device; 289 * reset the touchpad now to cure that. 290 */ 291 cmd[0] = PMS_RESET; 292 res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 293 1, 2, resp, 1); 294 } 295 296 /* 297 * Enable Absolute mode with W (width) reporting, and set 298 * the packet rate to maximum (80 packets per second). 299 */ 300 res = pms_synaptics_send_command(psc->sc_kbctag, psc->sc_kbcslot, 301 SYNAPTICS_MODE_ABSOLUTE | SYNAPTICS_MODE_W | SYNAPTICS_MODE_RATE); 302 cmd[0] = PMS_SET_SAMPLE; 303 cmd[1] = SYNAPTICS_CMD_SET_MODE2; 304 res |= pckbport_enqueue_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 2, 0, 305 1, NULL); 306 sc->up_down = 0; 307 sc->prev_fingers = 0; 308 sc->gesture_start_x = sc->gesture_start_y = 0; 309 sc->gesture_start_packet = 0; 310 sc->gesture_tap_packet = 0; 311 sc->gesture_type = 0; 312 sc->gesture_buttons = 0; 313 sc->rem_x = sc->rem_y = 0; 314 sc->movement_history = 0; 315 if (res) { 316 aprint_error_dev(psc->sc_dev, 317 "synaptics_enable: Error enabling device.\n"); 318 } 319 } 320 321 void 322 pms_synaptics_resume(void *vsc) 323 { 324 struct pms_softc *psc = vsc; 325 unsigned char cmd[1],resp[2] = { 0,0 }; 326 int res; 327 328 cmd[0] = PMS_RESET; 329 res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 1, 2, 330 resp, 1); 331 aprint_debug_dev(psc->sc_dev, 332 "pms_synaptics_resume: reset on resume %d 0x%02x 0x%02x\n", 333 res, resp[0], resp[1]); 334 } 335 336 static void 337 pms_sysctl_synaptics(struct sysctllog **clog) 338 { 339 int rc, root_num; 340 const struct sysctlnode *node; 341 342 if ((rc = sysctl_createv(clog, 0, NULL, NULL, 343 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 344 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 345 goto err; 346 347 if ((rc = sysctl_createv(clog, 0, NULL, &node, 348 CTLFLAG_PERMANENT, CTLTYPE_NODE, "synaptics", 349 SYSCTL_DESCR("Synaptics touchpad controls"), 350 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 351 goto err; 352 353 root_num = node->sysctl_num; 354 355 if ((rc = sysctl_createv(clog, 0, NULL, &node, 356 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 357 CTLTYPE_INT, "up_down_emulation", 358 SYSCTL_DESCR("Middle button/Z-axis emulation with up/down buttons"), 359 pms_sysctl_synaptics_verify, 0, 360 &synaptics_up_down_emul, 361 0, CTL_HW, root_num, CTL_CREATE, 362 CTL_EOL)) != 0) 363 goto err; 364 365 synaptics_up_down_emul_nodenum = node->sysctl_num; 366 367 if ((rc = sysctl_createv(clog, 0, NULL, &node, 368 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 369 CTLTYPE_INT, "up_down_motion_delta", 370 SYSCTL_DESCR("Up/down button Z-axis emulation rate"), 371 pms_sysctl_synaptics_verify, 0, 372 &synaptics_up_down_motion_delta, 373 0, CTL_HW, root_num, CTL_CREATE, 374 CTL_EOL)) != 0) 375 goto err; 376 377 synaptics_up_down_motion_delta_nodenum = node->sysctl_num; 378 379 if ((rc = sysctl_createv(clog, 0, NULL, &node, 380 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 381 CTLTYPE_INT, "gesture_move", 382 SYSCTL_DESCR("Movement greater than this between taps cancels gesture"), 383 pms_sysctl_synaptics_verify, 0, 384 &synaptics_gesture_move, 385 0, CTL_HW, root_num, CTL_CREATE, 386 CTL_EOL)) != 0) 387 goto err; 388 389 synaptics_gesture_move_nodenum = node->sysctl_num; 390 391 if ((rc = sysctl_createv(clog, 0, NULL, &node, 392 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 393 CTLTYPE_INT, "gesture_length", 394 SYSCTL_DESCR("Time period in which tap is recognised as a gesture"), 395 pms_sysctl_synaptics_verify, 0, 396 &synaptics_gesture_length, 397 0, CTL_HW, root_num, CTL_CREATE, 398 CTL_EOL)) != 0) 399 goto err; 400 401 synaptics_gesture_length_nodenum = node->sysctl_num; 402 403 if ((rc = sysctl_createv(clog, 0, NULL, &node, 404 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 405 CTLTYPE_INT, "edge_left", 406 SYSCTL_DESCR("Define left edge of touchpad"), 407 pms_sysctl_synaptics_verify, 0, 408 &synaptics_edge_left, 409 0, CTL_HW, root_num, CTL_CREATE, 410 CTL_EOL)) != 0) 411 goto err; 412 413 synaptics_edge_left_nodenum = node->sysctl_num; 414 415 if ((rc = sysctl_createv(clog, 0, NULL, &node, 416 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 417 CTLTYPE_INT, "edge_right", 418 SYSCTL_DESCR("Define right edge of touchpad"), 419 pms_sysctl_synaptics_verify, 0, 420 &synaptics_edge_right, 421 0, CTL_HW, root_num, CTL_CREATE, 422 CTL_EOL)) != 0) 423 goto err; 424 425 synaptics_edge_right_nodenum = node->sysctl_num; 426 427 if ((rc = sysctl_createv(clog, 0, NULL, &node, 428 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 429 CTLTYPE_INT, "edge_top", 430 SYSCTL_DESCR("Define top edge of touchpad"), 431 pms_sysctl_synaptics_verify, 0, 432 &synaptics_edge_top, 433 0, CTL_HW, root_num, CTL_CREATE, 434 CTL_EOL)) != 0) 435 goto err; 436 437 synaptics_edge_top_nodenum = node->sysctl_num; 438 439 if ((rc = sysctl_createv(clog, 0, NULL, &node, 440 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 441 CTLTYPE_INT, "edge_bottom", 442 SYSCTL_DESCR("Define bottom edge of touchpad"), 443 pms_sysctl_synaptics_verify, 0, 444 &synaptics_edge_bottom, 445 0, CTL_HW, root_num, CTL_CREATE, 446 CTL_EOL)) != 0) 447 goto err; 448 449 synaptics_edge_bottom_nodenum = node->sysctl_num; 450 451 if ((rc = sysctl_createv(clog, 0, NULL, &node, 452 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 453 CTLTYPE_INT, "edge_motion_delta", 454 SYSCTL_DESCR("Define edge motion rate"), 455 pms_sysctl_synaptics_verify, 0, 456 &synaptics_edge_motion_delta, 457 0, CTL_HW, root_num, CTL_CREATE, 458 CTL_EOL)) != 0) 459 goto err; 460 461 synaptics_edge_motion_delta_nodenum = node->sysctl_num; 462 463 if ((rc = sysctl_createv(clog, 0, NULL, &node, 464 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 465 CTLTYPE_INT, "finger_high", 466 SYSCTL_DESCR("Define finger applied pressure threshold"), 467 pms_sysctl_synaptics_verify, 0, 468 &synaptics_finger_high, 469 0, CTL_HW, root_num, CTL_CREATE, 470 CTL_EOL)) != 0) 471 goto err; 472 473 synaptics_finger_high_nodenum = node->sysctl_num; 474 475 if ((rc = sysctl_createv(clog, 0, NULL, &node, 476 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 477 CTLTYPE_INT, "finger_low", 478 SYSCTL_DESCR("Define finger removed pressure threshold"), 479 pms_sysctl_synaptics_verify, 0, 480 &synaptics_finger_low, 481 0, CTL_HW, root_num, CTL_CREATE, 482 CTL_EOL)) != 0) 483 goto err; 484 485 synaptics_finger_low_nodenum = node->sysctl_num; 486 487 if ((rc = sysctl_createv(clog, 0, NULL, &node, 488 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 489 CTLTYPE_INT, "two_fingers_emulation", 490 SYSCTL_DESCR("Map two fingers to middle button"), 491 pms_sysctl_synaptics_verify, 0, 492 &synaptics_two_fingers_emul, 493 0, CTL_HW, root_num, CTL_CREATE, 494 CTL_EOL)) != 0) 495 goto err; 496 497 synaptics_two_fingers_emul_nodenum = node->sysctl_num; 498 499 if ((rc = sysctl_createv(clog, 0, NULL, &node, 500 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 501 CTLTYPE_INT, "scale_x", 502 SYSCTL_DESCR("Horizontal movement scale factor"), 503 pms_sysctl_synaptics_verify, 0, 504 &synaptics_scale_x, 505 0, CTL_HW, root_num, CTL_CREATE, 506 CTL_EOL)) != 0) 507 goto err; 508 509 synaptics_scale_x_nodenum = node->sysctl_num; 510 511 if ((rc = sysctl_createv(clog, 0, NULL, &node, 512 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 513 CTLTYPE_INT, "scale_y", 514 SYSCTL_DESCR("Vertical movement scale factor"), 515 pms_sysctl_synaptics_verify, 0, 516 &synaptics_scale_y, 517 0, CTL_HW, root_num, CTL_CREATE, 518 CTL_EOL)) != 0) 519 goto err; 520 521 synaptics_scale_y_nodenum = node->sysctl_num; 522 523 if ((rc = sysctl_createv(clog, 0, NULL, &node, 524 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 525 CTLTYPE_INT, "max_speed_x", 526 SYSCTL_DESCR("Horizontal movement maximum speed"), 527 pms_sysctl_synaptics_verify, 0, 528 &synaptics_max_speed_x, 529 0, CTL_HW, root_num, CTL_CREATE, 530 CTL_EOL)) != 0) 531 goto err; 532 533 synaptics_max_speed_x_nodenum = node->sysctl_num; 534 535 if ((rc = sysctl_createv(clog, 0, NULL, &node, 536 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 537 CTLTYPE_INT, "max_speed_y", 538 SYSCTL_DESCR("Vertical movement maximum speed"), 539 pms_sysctl_synaptics_verify, 0, 540 &synaptics_max_speed_y, 541 0, CTL_HW, root_num, CTL_CREATE, 542 CTL_EOL)) != 0) 543 goto err; 544 545 synaptics_max_speed_y_nodenum = node->sysctl_num; 546 547 if ((rc = sysctl_createv(clog, 0, NULL, &node, 548 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 549 CTLTYPE_INT, "movement_threshold", 550 SYSCTL_DESCR("Minimum reported movement threshold"), 551 pms_sysctl_synaptics_verify, 0, 552 &synaptics_movement_threshold, 553 0, CTL_HW, root_num, CTL_CREATE, 554 CTL_EOL)) != 0) 555 goto err; 556 557 synaptics_movement_threshold_nodenum = node->sysctl_num; 558 return; 559 560 err: 561 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 562 } 563 564 static int 565 pms_sysctl_synaptics_verify(SYSCTLFN_ARGS) 566 { 567 int error, t; 568 struct sysctlnode node; 569 570 node = *rnode; 571 t = *(int *)rnode->sysctl_data; 572 node.sysctl_data = &t; 573 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 574 if (error || newp == NULL) 575 return error; 576 577 /* Sanity check the params. */ 578 if (node.sysctl_num == synaptics_up_down_emul_nodenum || 579 node.sysctl_num == synaptics_two_fingers_emul_nodenum) { 580 if (t < 0 || t > 2) 581 return (EINVAL); 582 } else 583 if (node.sysctl_num == synaptics_gesture_length_nodenum || 584 node.sysctl_num == synaptics_edge_motion_delta_nodenum || 585 node.sysctl_num == synaptics_up_down_motion_delta_nodenum) { 586 if (t < 0) 587 return (EINVAL); 588 } else 589 if (node.sysctl_num == synaptics_edge_left_nodenum || 590 node.sysctl_num == synaptics_edge_bottom_nodenum) { 591 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 2)) 592 return (EINVAL); 593 } else 594 if (node.sysctl_num == synaptics_edge_right_nodenum || 595 node.sysctl_num == synaptics_edge_top_nodenum) { 596 if (t < (SYNAPTICS_EDGE_MAX / 2)) 597 return (EINVAL); 598 } else 599 if (node.sysctl_num == synaptics_scale_x_nodenum || 600 node.sysctl_num == synaptics_scale_y_nodenum) { 601 if (t < 1 || t > (SYNAPTICS_EDGE_MAX / 4)) 602 return (EINVAL); 603 } else 604 if (node.sysctl_num == synaptics_finger_high_nodenum) { 605 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 606 t < synaptics_finger_low) 607 return (EINVAL); 608 } else 609 if (node.sysctl_num == synaptics_finger_low_nodenum) { 610 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 611 t > synaptics_finger_high) 612 return (EINVAL); 613 } else 614 if (node.sysctl_num == synaptics_gesture_move_nodenum || 615 node.sysctl_num == synaptics_movement_threshold_nodenum) { 616 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 4)) 617 return (EINVAL); 618 } else 619 return (EINVAL); 620 621 *(int *)rnode->sysctl_data = t; 622 623 return (0); 624 } 625 626 static int 627 pms_synaptics_send_command(pckbport_tag_t tag, pckbport_slot_t slot, 628 u_char syn_cmd) 629 { 630 u_char cmd[2]; 631 int res; 632 633 /* 634 * Need to send 4 Set Resolution commands, with the argument 635 * encoded in the bottom most 2 bits. 636 */ 637 cmd[0] = PMS_SET_RES; 638 cmd[1] = syn_cmd >> 6; 639 res = pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 640 641 cmd[0] = PMS_SET_RES; 642 cmd[1] = (syn_cmd & 0x30) >> 4; 643 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 644 645 cmd[0] = PMS_SET_RES; 646 cmd[1] = (syn_cmd & 0x0c) >> 2; 647 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 648 649 cmd[0] = PMS_SET_RES; 650 cmd[1] = (syn_cmd & 0x03); 651 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 652 653 return (res); 654 } 655 656 /* Masks for the first byte of a packet */ 657 #define PMS_LBUTMASK 0x01 658 #define PMS_RBUTMASK 0x02 659 #define PMS_MBUTMASK 0x04 660 661 static void 662 pms_synaptics_parse(struct pms_softc *psc) 663 { 664 struct synaptics_softc *sc = &psc->u.synaptics; 665 struct synaptics_packet sp; 666 667 /* Absolute X/Y coordinates of finger */ 668 sp.sp_x = psc->packet[4] + ((psc->packet[1] & 0x0f) << 8) + 669 ((psc->packet[3] & 0x10) << 8); 670 sp.sp_y = psc->packet[5] + ((psc->packet[1] & 0xf0) << 4) + 671 ((psc->packet[3] & 0x20) << 7); 672 673 /* Pressure */ 674 sp.sp_z = psc->packet[2]; 675 676 /* Width of finger */ 677 sp.sp_w = ((psc->packet[0] & 0x30) >> 2) + 678 ((psc->packet[0] & 0x04) >> 1) + 679 ((psc->packet[3] & 0x04) >> 2); 680 681 /* Left/Right button handling. */ 682 sp.sp_left = psc->packet[0] & PMS_LBUTMASK; 683 sp.sp_right = psc->packet[0] & PMS_RBUTMASK; 684 685 /* Up/Down buttons. */ 686 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 687 /* Old up/down buttons. */ 688 sp.sp_up = sp.sp_left ^ 689 (psc->packet[3] & PMS_LBUTMASK); 690 sp.sp_down = sp.sp_right ^ 691 (psc->packet[3] & PMS_RBUTMASK); 692 } else 693 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS && 694 ((psc->packet[0] & PMS_RBUTMASK) ^ 695 (psc->packet[3] & PMS_RBUTMASK))) { 696 /* New up/down button. */ 697 sp.sp_up = psc->packet[4] & SYN_1BUTMASK; 698 sp.sp_down = psc->packet[5] & SYN_2BUTMASK; 699 } else { 700 sp.sp_up = 0; 701 sp.sp_down = 0; 702 } 703 704 /* Middle button. */ 705 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 706 /* Old style Middle Button. */ 707 sp.sp_middle = (psc->packet[0] & PMS_LBUTMASK) ^ 708 (psc->packet[3] & PMS_LBUTMASK); 709 } else 710 if (synaptics_up_down_emul == 1) { 711 /* Do middle button emulation using up/down buttons */ 712 sp.sp_middle = sp.sp_up | sp.sp_down; 713 sp.sp_up = sp.sp_down = 0; 714 } else 715 sp.sp_middle = 0; 716 717 pms_synaptics_process_packet(psc, &sp); 718 } 719 720 static void 721 pms_synaptics_passthrough(struct pms_softc *psc) 722 { 723 int dx, dy, dz; 724 int buttons, changed; 725 int s; 726 727 buttons = ((psc->packet[1] & PMS_LBUTMASK) ? 0x20 : 0) | 728 ((psc->packet[1] & PMS_MBUTMASK) ? 0x40 : 0) | 729 ((psc->packet[1] & PMS_RBUTMASK) ? 0x80 : 0); 730 731 dx = psc->packet[4]; 732 if (dx >= 128) 733 dx -= 256; 734 if (dx == -128) 735 dx = -127; 736 737 dy = psc->packet[5]; 738 if (dy >= 128) 739 dy -= 256; 740 if (dy == -128) 741 dy = -127; 742 743 dz = 0; 744 745 changed = buttons ^ (psc->buttons & 0xe0); 746 psc->buttons ^= changed; 747 748 if (dx || dy || dz || changed) { 749 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 750 s = spltty(); 751 wsmouse_input(psc->sc_wsmousedev, 752 buttons, dx, dy, dz, 0, 753 WSMOUSE_INPUT_DELTA); 754 splx(s); 755 } 756 } 757 758 static void 759 pms_synaptics_input(void *vsc, int data) 760 { 761 struct pms_softc *psc = vsc; 762 struct timeval diff; 763 764 if (!psc->sc_enabled) { 765 /* Interrupts are not expected. Discard the byte. */ 766 return; 767 } 768 769 getmicrouptime(&psc->current); 770 771 if (psc->inputstate > 0) { 772 timersub(&psc->current, &psc->last, &diff); 773 if (diff.tv_sec > 0 || diff.tv_usec >= 40000) { 774 aprint_debug_dev(psc->sc_dev, 775 "pms_input: unusual delay (%ld.%06ld s), " 776 "scheduling reset\n", 777 (long)diff.tv_sec, (long)diff.tv_usec); 778 psc->inputstate = 0; 779 psc->sc_enabled = 0; 780 wakeup(&psc->sc_enabled); 781 return; 782 } 783 } 784 psc->last = psc->current; 785 786 switch (psc->inputstate) { 787 case 0: 788 if ((data & 0xc8) != 0x80) { 789 #ifdef SYNAPTICSDEBUG 790 aprint_normal_dev(psc->sc_dev, 791 "pms_input: 0x%02x out of sync\n", data); 792 #endif 793 return; /* not in sync yet, discard input */ 794 } 795 /*FALLTHROUGH*/ 796 797 case 3: 798 if ((data & 8) == 8) { 799 #ifdef SYNAPTICSDEBUG 800 aprint_normal_dev(psc->sc_dev, 801 "pms_input: dropped in relative mode, reset\n"); 802 #endif 803 psc->inputstate = 0; 804 psc->sc_enabled = 0; 805 wakeup(&psc->sc_enabled); 806 return; 807 } 808 } 809 810 psc->packet[psc->inputstate++] = data & 0xff; 811 if (psc->inputstate == 6) { 812 /* 813 * We have a complete packet. 814 * Extract the pertinent details. 815 */ 816 psc->inputstate = 0; 817 818 if ((psc->packet[0] & 0xfc) == 0x84 && 819 (psc->packet[3] & 0xcc) == 0xc4) { 820 /* PS/2 passthrough */ 821 pms_synaptics_passthrough(psc); 822 } else { 823 pms_synaptics_parse(psc); 824 } 825 } 826 } 827 828 static inline int 829 synaptics_finger_detect(struct synaptics_softc *sc, struct synaptics_packet *sp, 830 int *palmp) 831 { 832 int fingers; 833 834 /* Assume no palm */ 835 *palmp = 0; 836 837 /* 838 * Apply some hysteresis when checking for a finger. 839 * When the finger is first applied, we ignore it until the 840 * pressure exceeds the 'high' threshold. The finger is considered 841 * removed only when pressure falls beneath the 'low' threshold. 842 */ 843 if ((sc->prev_fingers == 0 && sp->sp_z > synaptics_finger_high) || 844 (sc->prev_fingers != 0 && sp->sp_z > synaptics_finger_low)) 845 fingers = 1; 846 else 847 fingers = 0; 848 849 /* 850 * If the pad can't do palm detection, skip the rest. 851 */ 852 if (fingers == 0 || (sc->flags & SYN_FLAG_HAS_PALM_DETECT) == 0) 853 return (fingers); 854 855 /* 856 * Palm detection 857 */ 858 if (sp->sp_z > SYNAPTICS_FINGER_FLAT && 859 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN) 860 *palmp = 1; 861 862 if (sc->prev_fingers == 0 && 863 (sp->sp_z > SYNAPTICS_FINGER_FLAT || 864 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN)) { 865 /* 866 * Contact area or pressure is too great to be a finger. 867 * Just ignore it for now. 868 */ 869 return (0); 870 } 871 872 /* 873 * Detect 2 and 3 fingers if supported, but only if multiple 874 * fingers appear within the tap gesture time period. 875 */ 876 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER && 877 SYN_TIME(sc, sc->gesture_start_packet) < synaptics_gesture_length) { 878 switch (sp->sp_w) { 879 case SYNAPTICS_WIDTH_TWO_FINGERS: 880 fingers = 2; 881 break; 882 883 case SYNAPTICS_WIDTH_THREE_OR_MORE: 884 fingers = 3; 885 break; 886 887 case SYNAPTICS_WIDTH_PEN: 888 fingers = 1; 889 break; 890 891 default: 892 /* 893 * The width value can report spurious single-finger 894 * events after a multi-finger event. 895 */ 896 if (sc->prev_fingers > 1) 897 fingers = sc->prev_fingers; 898 else 899 fingers = 1; 900 break; 901 } 902 } 903 904 return (fingers); 905 } 906 907 static inline void 908 synaptics_gesture_detect(struct synaptics_softc *sc, 909 struct synaptics_packet *sp, int fingers) 910 { 911 int gesture_len, gesture_move_x, gesture_move_y, gesture_buttons; 912 int set_buttons; 913 914 gesture_len = SYN_TIME(sc, sc->gesture_start_packet); 915 gesture_buttons = sc->gesture_buttons; 916 917 if (fingers && sc->prev_fingers == 0) { 918 /* 919 * Finger was just applied. 920 * If the previous gesture was a single-click, set things 921 * up to deal with a possible drag or double-click gesture. 922 * Basically, if the finger is removed again within 923 * 'synaptics_gesture_length' packets, this is treated 924 * as a double-click. Otherwise we will emulate holding 925 * the left button down whilst dragging the mouse. 926 */ 927 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) 928 sc->gesture_type |= SYN_GESTURE_DRAG; 929 930 sc->gesture_start_x = sp->sp_x; 931 sc->gesture_start_y = sp->sp_y; 932 sc->gesture_start_packet = sc->total_packets; 933 } else 934 if (fingers == 0 && sc->prev_fingers != 0) { 935 /* 936 * Finger was just removed. 937 * Check if the contact time and finger movement were 938 * small enough to qualify as a gesture. 939 * Ignore finger movement if multiple fingers were 940 * detected (the pad may report coordinates for any 941 * of the fingers). 942 */ 943 gesture_move_x = abs(sc->gesture_start_x - sp->sp_x); 944 gesture_move_y = abs(sc->gesture_start_y - sp->sp_y); 945 946 if (gesture_len < synaptics_gesture_length && 947 (sc->prev_fingers > 1 || 948 (gesture_move_x < synaptics_gesture_move && 949 gesture_move_y < synaptics_gesture_move))) { 950 /* 951 * Looking good so far. 952 */ 953 if (SYN_IS_DRAG(sc->gesture_type)) { 954 /* 955 * Promote this gesture to double-click. 956 */ 957 sc->gesture_type |= SYN_GESTURE_DOUBLE; 958 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 959 } else { 960 /* 961 * Single tap gesture. Set the tap length timer 962 * and flag a single-click. 963 */ 964 sc->gesture_tap_packet = sc->total_packets; 965 sc->gesture_type |= SYN_GESTURE_SINGLE; 966 967 /* 968 * The gesture can be modified depending on 969 * the number of fingers detected. 970 * 971 * 1: Normal left button emulation. 972 * 2: Either middle button or right button 973 * depending on the value of the two_fingers 974 * sysctl variable. 975 * 3: Right button. 976 */ 977 switch (sc->prev_fingers) { 978 case 2: 979 if (synaptics_two_fingers_emul == 1) 980 gesture_buttons |= PMS_RBUTMASK; 981 else 982 if (synaptics_two_fingers_emul == 2) 983 gesture_buttons |= PMS_MBUTMASK; 984 break; 985 case 3: 986 gesture_buttons |= PMS_RBUTMASK; 987 break; 988 default: 989 gesture_buttons |= PMS_LBUTMASK; 990 break; 991 } 992 } 993 } 994 995 /* 996 * Always clear drag state when the finger is removed. 997 */ 998 sc->gesture_type &= ~SYN_GESTURE_DRAG; 999 } 1000 1001 if (sc->gesture_type == 0) { 1002 /* 1003 * There is no gesture in progress. 1004 * Clear emulated button state. 1005 */ 1006 sc->gesture_buttons = 0; 1007 return; 1008 } 1009 1010 /* 1011 * A gesture is in progress. 1012 */ 1013 set_buttons = 0; 1014 1015 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) { 1016 /* 1017 * Single-click. 1018 * Activate the relevant button(s) until the 1019 * gesture tap timer has expired. 1020 */ 1021 if (SYN_TIME(sc, sc->gesture_tap_packet) < 1022 synaptics_gesture_length) 1023 set_buttons = 1; 1024 else 1025 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 1026 } else 1027 if (SYN_IS_DOUBLE_TAP(sc->gesture_type) && sc->prev_fingers == 0) { 1028 /* 1029 * Double-click. 1030 * Activate the relevant button(s) once. 1031 */ 1032 set_buttons = 1; 1033 sc->gesture_type &= ~SYN_GESTURE_DOUBLE; 1034 } 1035 1036 if (set_buttons || SYN_IS_DRAG(sc->gesture_type)) { 1037 /* 1038 * Single-click and drag. 1039 * Maintain button state until the finger is removed. 1040 */ 1041 sp->sp_left |= gesture_buttons & PMS_LBUTMASK; 1042 sp->sp_right |= gesture_buttons & PMS_RBUTMASK; 1043 sp->sp_middle |= gesture_buttons & PMS_MBUTMASK; 1044 } 1045 1046 sc->gesture_buttons = gesture_buttons; 1047 } 1048 1049 static inline int 1050 synaptics_filter_policy(struct synaptics_softc *sc, int *history, int value) 1051 { 1052 int a, b, rv, count; 1053 1054 count = sc->total_packets; 1055 1056 /* 1057 * Once we've accumulated at least SYN_HIST_SIZE values, combine 1058 * each new value with the previous two and return the average. 1059 * 1060 * This is necessary when the touchpad is operating in 80 packets 1061 * per second mode, as it performs little internal filtering on 1062 * reported values. 1063 * 1064 * Using a rolling average helps to filter out jitter caused by 1065 * tiny finger movements. 1066 */ 1067 if (sc->movement_history >= SYN_HIST_SIZE) { 1068 a = (history[(count + 0) % SYN_HIST_SIZE] + 1069 history[(count + 1) % SYN_HIST_SIZE]) / 2; 1070 1071 b = (value + history[(count + 0) % SYN_HIST_SIZE]) / 2; 1072 1073 rv = b - a; 1074 1075 /* 1076 * Don't report the movement if it's below a certain 1077 * threshold. 1078 */ 1079 if (abs(rv) < synaptics_movement_threshold) 1080 rv = 0; 1081 } else 1082 rv = 0; 1083 1084 /* 1085 * Add the new value to the history buffer. 1086 */ 1087 history[(count + 1) % SYN_HIST_SIZE] = value; 1088 1089 return (rv); 1090 } 1091 1092 /* Edge detection */ 1093 #define SYN_EDGE_TOP 1 1094 #define SYN_EDGE_BOTTOM 2 1095 #define SYN_EDGE_LEFT 4 1096 #define SYN_EDGE_RIGHT 8 1097 1098 static inline int 1099 synaptics_check_edge(int x, int y) 1100 { 1101 int rv = 0; 1102 1103 if (x < synaptics_edge_left) 1104 rv |= SYN_EDGE_LEFT; 1105 else 1106 if (x > synaptics_edge_right) 1107 rv |= SYN_EDGE_RIGHT; 1108 1109 if (y < synaptics_edge_bottom) 1110 rv |= SYN_EDGE_BOTTOM; 1111 else 1112 if (y > synaptics_edge_top) 1113 rv |= SYN_EDGE_TOP; 1114 1115 return (rv); 1116 } 1117 1118 static inline int 1119 synaptics_edge_motion(struct synaptics_softc *sc, int delta, int dir) 1120 { 1121 1122 /* 1123 * When edge motion is enabled, synaptics_edge_motion_delta is 1124 * combined with the current delta, together with the direction 1125 * in which to simulate the motion. The result is added to 1126 * the delta derived from finger movement. This provides a smooth 1127 * transition from finger movement to edge motion. 1128 */ 1129 delta = synaptics_edge_motion_delta + (dir * delta); 1130 if (delta < 0) 1131 return (0); 1132 if (delta > synaptics_edge_motion_delta) 1133 return (synaptics_edge_motion_delta); 1134 return (delta); 1135 } 1136 1137 static inline int 1138 synaptics_scale(int delta, int scale, int *remp) 1139 { 1140 int rv; 1141 1142 /* 1143 * Scale the raw delta in Synaptics coordinates (0-6143) into 1144 * something more reasonable by dividing the raw delta by a 1145 * scale factor. Any remainder from the previous scale result 1146 * is added to the current delta before scaling. 1147 * This prevents loss of resolution for very small/slow 1148 * movements of the finger. 1149 */ 1150 delta += *remp; 1151 rv = delta / scale; 1152 *remp = delta % scale; 1153 1154 return (rv); 1155 } 1156 1157 static inline void 1158 synaptics_movement(struct synaptics_softc *sc, struct synaptics_packet *sp, 1159 int *dxp, int *dyp) 1160 { 1161 int dx, dy, edge; 1162 1163 /* 1164 * Compute the next values of dx and dy 1165 */ 1166 dx = synaptics_filter_policy(sc, sc->history_x, sp->sp_x); 1167 dy = synaptics_filter_policy(sc, sc->history_y, sp->sp_y); 1168 1169 /* 1170 * If we're dealing with a drag gesture, and the finger moves to 1171 * the edge of the touchpad, apply edge motion emulation if it 1172 * is enabled. 1173 */ 1174 if (synaptics_edge_motion_delta && SYN_IS_DRAG(sc->gesture_type)) { 1175 edge = synaptics_check_edge(sp->sp_x, sp->sp_y); 1176 1177 if (edge & SYN_EDGE_LEFT) 1178 dx -= synaptics_edge_motion(sc, dx, 1); 1179 if (edge & SYN_EDGE_RIGHT) 1180 dx += synaptics_edge_motion(sc, dx, -1); 1181 if (edge & SYN_EDGE_BOTTOM) 1182 dy -= synaptics_edge_motion(sc, dy, 1); 1183 if (edge & SYN_EDGE_TOP) 1184 dy += synaptics_edge_motion(sc, dy, -1); 1185 } 1186 1187 /* 1188 * Apply scaling to both deltas 1189 */ 1190 dx = synaptics_scale(dx, synaptics_scale_x, &sc->rem_x); 1191 dy = synaptics_scale(dy, synaptics_scale_y, &sc->rem_y); 1192 1193 /* 1194 * Clamp deltas to specified maximums. 1195 */ 1196 if (dx > synaptics_max_speed_x) 1197 dx = synaptics_max_speed_x; 1198 if (dy > synaptics_max_speed_y) 1199 dy = synaptics_max_speed_y; 1200 1201 *dxp = dx; 1202 *dyp = dy; 1203 1204 sc->movement_history++; 1205 } 1206 1207 static void 1208 pms_synaptics_process_packet(struct pms_softc *psc, struct synaptics_packet *sp) 1209 { 1210 struct synaptics_softc *sc = &psc->u.synaptics; 1211 int dx, dy, dz; 1212 int fingers, palm, buttons, changed; 1213 int s; 1214 1215 /* 1216 * Do Z-axis emulation using up/down buttons if required. 1217 * Note that the pad will send a one second burst of packets 1218 * when an up/down button is pressed and held. At the moment 1219 * we don't deal with auto-repeat, so convert the burst into 1220 * a one-shot. 1221 */ 1222 dz = 0; 1223 if (synaptics_up_down_emul == 2) { 1224 if (sc->up_down == 0) { 1225 if (sp->sp_up && sp->sp_down) { 1226 /* 1227 * Most up/down buttons will be actuated using 1228 * a rocker switch, so we should never see 1229 * them both simultaneously. But just in case, 1230 * treat this situation as a middle button 1231 * event. 1232 */ 1233 sp->sp_middle = 1; 1234 } else 1235 if (sp->sp_up) 1236 dz = -synaptics_up_down_motion_delta; 1237 else 1238 if (sp->sp_down) 1239 dz = synaptics_up_down_motion_delta; 1240 } 1241 1242 sc->up_down = sp->sp_up | sp->sp_down; 1243 sp->sp_up = sp->sp_down = 0; 1244 } 1245 1246 /* 1247 * Determine whether or not a finger is on the pad. 1248 * On some pads, this will return the number of fingers 1249 * detected. 1250 */ 1251 fingers = synaptics_finger_detect(sc, sp, &palm); 1252 1253 /* 1254 * Do gesture processing only if we didn't detect a palm. 1255 */ 1256 if (palm == 0) 1257 synaptics_gesture_detect(sc, sp, fingers); 1258 else 1259 sc->gesture_type = sc->gesture_buttons = 0; 1260 1261 /* 1262 * Determine what buttons to report 1263 */ 1264 buttons = (sp->sp_left ? 0x1 : 0) | 1265 (sp->sp_middle ? 0x2 : 0) | 1266 (sp->sp_right ? 0x4 : 0) | 1267 (sp->sp_up ? 0x8 : 0) | 1268 (sp->sp_down ? 0x10 : 0); 1269 changed = buttons ^ (psc->buttons & 0x1f); 1270 psc->buttons ^= changed; 1271 1272 sc->prev_fingers = fingers; 1273 sc->total_packets++; 1274 1275 /* 1276 * Do movement processing IFF we have a single finger and no palm. 1277 */ 1278 if (fingers == 1 && palm == 0) 1279 synaptics_movement(sc, sp, &dx, &dy); 1280 else { 1281 /* 1282 * No valid finger. Therefore no movement. 1283 */ 1284 sc->movement_history = 0; 1285 sc->rem_x = sc->rem_y = 0; 1286 dx = dy = 0; 1287 } 1288 1289 /* 1290 * Pass the final results up to wsmouse_input() if necessary. 1291 */ 1292 if (dx || dy || dz || changed) { 1293 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 1294 s = spltty(); 1295 wsmouse_input(psc->sc_wsmousedev, 1296 buttons, 1297 dx, dy, dz, 0, 1298 WSMOUSE_INPUT_DELTA); 1299 splx(s); 1300 } 1301 } 1302
Indexes created Sat Sep 27 22:09:54 GMT 2025