synaptics.c revision 1.16.8.1
1 /* $NetBSD: synaptics.c,v 1.16.8.1 2007/12/13 21:56:04 bouyer 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 1.16.8.1 2007/12/13 21:56:04 bouyer 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_error("%s: synaptics_probe: Identify Touchpad error.\n", 151 psc->sc_dev.dv_xname); 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 printf("%s: synaptics_probe: Not synaptics.\n", 166 psc->sc_dev.dv_xname); 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("%s: Synaptics touchpad version %d.%d\n", 178 psc->sc_dev.dv_xname, 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("%s: synaptics_probe: Failed to query " 194 "capabilities.\n", psc->sc_dev.dv_xname); 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("%s: synaptics_probe: Capabilities 0x%04x.\n", 209 psc->sc_dev.dv_xname, 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("%s: synaptics_probe: Extended " 230 "Capabilities 0x%02x.\n", 231 psc->sc_dev.dv_xname, 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("%s: ", psc->sc_dev.dv_xname); 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, psc->sc_dev.dv_xname); 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 printf("%s: synaptics_enable: Error enabling device.\n", 303 psc->sc_dev.dv_xname); 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 printf("%s: pms_synaptics_resume: reset on resume %d 0x%02x 0x%02x\n", 318 psc->sc_dev.dv_xname, res, resp[0], resp[1]); 319 } 320 321 static void 322 pms_sysctl_synaptics(struct sysctllog **clog) 323 { 324 int rc, root_num; 325 const struct sysctlnode *node; 326 327 if ((rc = sysctl_createv(clog, 0, NULL, NULL, 328 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 329 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 330 goto err; 331 332 if ((rc = sysctl_createv(clog, 0, NULL, &node, 333 CTLFLAG_PERMANENT, CTLTYPE_NODE, "synaptics", 334 SYSCTL_DESCR("Synaptics touchpad controls"), 335 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 336 goto err; 337 338 root_num = node->sysctl_num; 339 340 if ((rc = sysctl_createv(clog, 0, NULL, &node, 341 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 342 CTLTYPE_INT, "up_down_emulation", 343 SYSCTL_DESCR("Middle button/Z-axis emulation with up/down buttons"), 344 pms_sysctl_synaptics_verify, 0, 345 &synaptics_up_down_emul, 346 0, CTL_HW, root_num, CTL_CREATE, 347 CTL_EOL)) != 0) 348 goto err; 349 350 synaptics_up_down_emul_nodenum = node->sysctl_num; 351 352 if ((rc = sysctl_createv(clog, 0, NULL, &node, 353 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 354 CTLTYPE_INT, "up_down_motion_delta", 355 SYSCTL_DESCR("Up/down button Z-axis emulation rate"), 356 pms_sysctl_synaptics_verify, 0, 357 &synaptics_up_down_motion_delta, 358 0, CTL_HW, root_num, CTL_CREATE, 359 CTL_EOL)) != 0) 360 goto err; 361 362 synaptics_up_down_motion_delta_nodenum = node->sysctl_num; 363 364 if ((rc = sysctl_createv(clog, 0, NULL, &node, 365 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 366 CTLTYPE_INT, "gesture_move", 367 SYSCTL_DESCR("Movement greater than this between taps cancels gesture"), 368 pms_sysctl_synaptics_verify, 0, 369 &synaptics_gesture_move, 370 0, CTL_HW, root_num, CTL_CREATE, 371 CTL_EOL)) != 0) 372 goto err; 373 374 synaptics_gesture_move_nodenum = node->sysctl_num; 375 376 if ((rc = sysctl_createv(clog, 0, NULL, &node, 377 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 378 CTLTYPE_INT, "gesture_length", 379 SYSCTL_DESCR("Time period in which tap is recognised as a gesture"), 380 pms_sysctl_synaptics_verify, 0, 381 &synaptics_gesture_length, 382 0, CTL_HW, root_num, CTL_CREATE, 383 CTL_EOL)) != 0) 384 goto err; 385 386 synaptics_gesture_length_nodenum = node->sysctl_num; 387 388 if ((rc = sysctl_createv(clog, 0, NULL, &node, 389 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 390 CTLTYPE_INT, "edge_left", 391 SYSCTL_DESCR("Define left edge of touchpad"), 392 pms_sysctl_synaptics_verify, 0, 393 &synaptics_edge_left, 394 0, CTL_HW, root_num, CTL_CREATE, 395 CTL_EOL)) != 0) 396 goto err; 397 398 synaptics_edge_left_nodenum = node->sysctl_num; 399 400 if ((rc = sysctl_createv(clog, 0, NULL, &node, 401 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 402 CTLTYPE_INT, "edge_right", 403 SYSCTL_DESCR("Define right edge of touchpad"), 404 pms_sysctl_synaptics_verify, 0, 405 &synaptics_edge_right, 406 0, CTL_HW, root_num, CTL_CREATE, 407 CTL_EOL)) != 0) 408 goto err; 409 410 synaptics_edge_right_nodenum = node->sysctl_num; 411 412 if ((rc = sysctl_createv(clog, 0, NULL, &node, 413 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 414 CTLTYPE_INT, "edge_top", 415 SYSCTL_DESCR("Define top edge of touchpad"), 416 pms_sysctl_synaptics_verify, 0, 417 &synaptics_edge_top, 418 0, CTL_HW, root_num, CTL_CREATE, 419 CTL_EOL)) != 0) 420 goto err; 421 422 synaptics_edge_top_nodenum = node->sysctl_num; 423 424 if ((rc = sysctl_createv(clog, 0, NULL, &node, 425 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 426 CTLTYPE_INT, "edge_bottom", 427 SYSCTL_DESCR("Define bottom edge of touchpad"), 428 pms_sysctl_synaptics_verify, 0, 429 &synaptics_edge_bottom, 430 0, CTL_HW, root_num, CTL_CREATE, 431 CTL_EOL)) != 0) 432 goto err; 433 434 synaptics_edge_bottom_nodenum = node->sysctl_num; 435 436 if ((rc = sysctl_createv(clog, 0, NULL, &node, 437 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 438 CTLTYPE_INT, "edge_motion_delta", 439 SYSCTL_DESCR("Define edge motion rate"), 440 pms_sysctl_synaptics_verify, 0, 441 &synaptics_edge_motion_delta, 442 0, CTL_HW, root_num, CTL_CREATE, 443 CTL_EOL)) != 0) 444 goto err; 445 446 synaptics_edge_motion_delta_nodenum = node->sysctl_num; 447 448 if ((rc = sysctl_createv(clog, 0, NULL, &node, 449 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 450 CTLTYPE_INT, "finger_high", 451 SYSCTL_DESCR("Define finger applied pressure threshold"), 452 pms_sysctl_synaptics_verify, 0, 453 &synaptics_finger_high, 454 0, CTL_HW, root_num, CTL_CREATE, 455 CTL_EOL)) != 0) 456 goto err; 457 458 synaptics_finger_high_nodenum = node->sysctl_num; 459 460 if ((rc = sysctl_createv(clog, 0, NULL, &node, 461 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 462 CTLTYPE_INT, "finger_low", 463 SYSCTL_DESCR("Define finger removed pressure threshold"), 464 pms_sysctl_synaptics_verify, 0, 465 &synaptics_finger_low, 466 0, CTL_HW, root_num, CTL_CREATE, 467 CTL_EOL)) != 0) 468 goto err; 469 470 synaptics_finger_low_nodenum = node->sysctl_num; 471 472 if ((rc = sysctl_createv(clog, 0, NULL, &node, 473 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 474 CTLTYPE_INT, "two_fingers_emulation", 475 SYSCTL_DESCR("Map two fingers to middle button"), 476 pms_sysctl_synaptics_verify, 0, 477 &synaptics_two_fingers_emul, 478 0, CTL_HW, root_num, CTL_CREATE, 479 CTL_EOL)) != 0) 480 goto err; 481 482 synaptics_two_fingers_emul_nodenum = node->sysctl_num; 483 484 if ((rc = sysctl_createv(clog, 0, NULL, &node, 485 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 486 CTLTYPE_INT, "scale_x", 487 SYSCTL_DESCR("Horizontal movement scale factor"), 488 pms_sysctl_synaptics_verify, 0, 489 &synaptics_scale_x, 490 0, CTL_HW, root_num, CTL_CREATE, 491 CTL_EOL)) != 0) 492 goto err; 493 494 synaptics_scale_x_nodenum = node->sysctl_num; 495 496 if ((rc = sysctl_createv(clog, 0, NULL, &node, 497 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 498 CTLTYPE_INT, "scale_y", 499 SYSCTL_DESCR("Vertical movement scale factor"), 500 pms_sysctl_synaptics_verify, 0, 501 &synaptics_scale_y, 502 0, CTL_HW, root_num, CTL_CREATE, 503 CTL_EOL)) != 0) 504 goto err; 505 506 synaptics_scale_y_nodenum = node->sysctl_num; 507 508 if ((rc = sysctl_createv(clog, 0, NULL, &node, 509 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 510 CTLTYPE_INT, "max_speed_x", 511 SYSCTL_DESCR("Horizontal movement maximum speed"), 512 pms_sysctl_synaptics_verify, 0, 513 &synaptics_max_speed_x, 514 0, CTL_HW, root_num, CTL_CREATE, 515 CTL_EOL)) != 0) 516 goto err; 517 518 synaptics_max_speed_x_nodenum = node->sysctl_num; 519 520 if ((rc = sysctl_createv(clog, 0, NULL, &node, 521 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 522 CTLTYPE_INT, "max_speed_y", 523 SYSCTL_DESCR("Vertical movement maximum speed"), 524 pms_sysctl_synaptics_verify, 0, 525 &synaptics_max_speed_y, 526 0, CTL_HW, root_num, CTL_CREATE, 527 CTL_EOL)) != 0) 528 goto err; 529 530 synaptics_max_speed_y_nodenum = node->sysctl_num; 531 532 if ((rc = sysctl_createv(clog, 0, NULL, &node, 533 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 534 CTLTYPE_INT, "movement_threshold", 535 SYSCTL_DESCR("Minimum reported movement threshold"), 536 pms_sysctl_synaptics_verify, 0, 537 &synaptics_movement_threshold, 538 0, CTL_HW, root_num, CTL_CREATE, 539 CTL_EOL)) != 0) 540 goto err; 541 542 synaptics_movement_threshold_nodenum = node->sysctl_num; 543 return; 544 545 err: 546 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 547 } 548 549 static int 550 pms_sysctl_synaptics_verify(SYSCTLFN_ARGS) 551 { 552 int error, t; 553 struct sysctlnode node; 554 555 node = *rnode; 556 t = *(int *)rnode->sysctl_data; 557 node.sysctl_data = &t; 558 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 559 if (error || newp == NULL) 560 return error; 561 562 /* Sanity check the params. */ 563 if (node.sysctl_num == synaptics_up_down_emul_nodenum || 564 node.sysctl_num == synaptics_two_fingers_emul_nodenum) { 565 if (t < 0 || t > 2) 566 return (EINVAL); 567 } else 568 if (node.sysctl_num == synaptics_gesture_length_nodenum || 569 node.sysctl_num == synaptics_edge_motion_delta_nodenum || 570 node.sysctl_num == synaptics_up_down_motion_delta_nodenum) { 571 if (t < 0) 572 return (EINVAL); 573 } else 574 if (node.sysctl_num == synaptics_edge_left_nodenum || 575 node.sysctl_num == synaptics_edge_bottom_nodenum) { 576 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 2)) 577 return (EINVAL); 578 } else 579 if (node.sysctl_num == synaptics_edge_right_nodenum || 580 node.sysctl_num == synaptics_edge_top_nodenum) { 581 if (t < (SYNAPTICS_EDGE_MAX / 2)) 582 return (EINVAL); 583 } else 584 if (node.sysctl_num == synaptics_scale_x_nodenum || 585 node.sysctl_num == synaptics_scale_y_nodenum) { 586 if (t < 1 || t > (SYNAPTICS_EDGE_MAX / 4)) 587 return (EINVAL); 588 } else 589 if (node.sysctl_num == synaptics_finger_high_nodenum) { 590 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 591 t < synaptics_finger_low) 592 return (EINVAL); 593 } else 594 if (node.sysctl_num == synaptics_finger_low_nodenum) { 595 if (t < 0 || t > SYNAPTICS_FINGER_PALM || 596 t > synaptics_finger_high) 597 return (EINVAL); 598 } else 599 if (node.sysctl_num == synaptics_gesture_move_nodenum || 600 node.sysctl_num == synaptics_movement_threshold_nodenum) { 601 if (t < 0 || t > (SYNAPTICS_EDGE_MAX / 4)) 602 return (EINVAL); 603 } else 604 return (EINVAL); 605 606 *(int *)rnode->sysctl_data = t; 607 608 return (0); 609 } 610 611 static int 612 pms_synaptics_send_command(pckbport_tag_t tag, pckbport_slot_t slot, 613 u_char syn_cmd) 614 { 615 u_char cmd[2]; 616 int res; 617 618 /* 619 * Need to send 4 Set Resolution commands, with the argument 620 * encoded in the bottom most 2 bits. 621 */ 622 cmd[0] = PMS_SET_RES; 623 cmd[1] = syn_cmd >> 6; 624 res = pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 625 626 cmd[0] = PMS_SET_RES; 627 cmd[1] = (syn_cmd & 0x30) >> 4; 628 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 629 630 cmd[0] = PMS_SET_RES; 631 cmd[1] = (syn_cmd & 0x0c) >> 2; 632 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 633 634 cmd[0] = PMS_SET_RES; 635 cmd[1] = (syn_cmd & 0x03); 636 res |= pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); 637 638 return (res); 639 } 640 641 /* Masks for the first byte of a packet */ 642 #define PMS_LBUTMASK 0x01 643 #define PMS_RBUTMASK 0x02 644 #define PMS_MBUTMASK 0x04 645 646 static void 647 pms_synaptics_parse(struct pms_softc *psc) 648 { 649 struct synaptics_softc *sc = &psc->u.synaptics; 650 struct synaptics_packet sp; 651 652 /* Absolute X/Y coordinates of finger */ 653 sp.sp_x = psc->packet[4] + ((psc->packet[1] & 0x0f) << 8) + 654 ((psc->packet[3] & 0x10) << 8); 655 sp.sp_y = psc->packet[5] + ((psc->packet[1] & 0xf0) << 4) + 656 ((psc->packet[3] & 0x20) << 7); 657 658 /* Pressure */ 659 sp.sp_z = psc->packet[2]; 660 661 /* Width of finger */ 662 sp.sp_w = ((psc->packet[0] & 0x30) >> 2) + 663 ((psc->packet[0] & 0x04) >> 1) + 664 ((psc->packet[3] & 0x04) >> 2); 665 666 /* Left/Right button handling. */ 667 sp.sp_left = psc->packet[0] & PMS_LBUTMASK; 668 sp.sp_right = psc->packet[0] & PMS_RBUTMASK; 669 670 /* Up/Down buttons. */ 671 if (sc->flags & SYN_FLAG_HAS_BUTTONS_4_5) { 672 /* Old up/down buttons. */ 673 sp.sp_up = sp.sp_left ^ 674 (psc->packet[3] & PMS_LBUTMASK); 675 sp.sp_down = sp.sp_right ^ 676 (psc->packet[3] & PMS_RBUTMASK); 677 } else 678 if (sc->flags & SYN_FLAG_HAS_UP_DOWN_BUTTONS && 679 ((psc->packet[0] & PMS_RBUTMASK) ^ 680 (psc->packet[3] & PMS_RBUTMASK))) { 681 /* New up/down button. */ 682 sp.sp_up = psc->packet[4] & SYN_1BUTMASK; 683 sp.sp_down = psc->packet[5] & SYN_2BUTMASK; 684 } else { 685 sp.sp_up = 0; 686 sp.sp_down = 0; 687 } 688 689 /* Middle button. */ 690 if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) { 691 /* Old style Middle Button. */ 692 sp.sp_middle = (psc->packet[0] & PMS_LBUTMASK) ^ 693 (psc->packet[3] & PMS_LBUTMASK); 694 } else 695 if (synaptics_up_down_emul == 1) { 696 /* Do middle button emulation using up/down buttons */ 697 sp.sp_middle = sp.sp_up | sp.sp_down; 698 sp.sp_up = sp.sp_down = 0; 699 } else 700 sp.sp_middle = 0; 701 702 pms_synaptics_process_packet(psc, &sp); 703 } 704 705 static void 706 pms_synaptics_passthrough(struct pms_softc *psc) 707 { 708 int dx, dy, dz; 709 int buttons, changed; 710 int s; 711 712 buttons = ((psc->packet[1] & PMS_LBUTMASK) ? 0x20 : 0) | 713 ((psc->packet[1] & PMS_MBUTMASK) ? 0x40 : 0) | 714 ((psc->packet[1] & PMS_RBUTMASK) ? 0x80 : 0); 715 716 dx = psc->packet[4]; 717 if (dx >= 128) 718 dx -= 256; 719 if (dx == -128) 720 dx = -127; 721 722 dy = psc->packet[5]; 723 if (dy >= 128) 724 dy -= 256; 725 if (dy == -128) 726 dy = -127; 727 728 dz = 0; 729 730 changed = buttons ^ (psc->buttons & 0xe0); 731 psc->buttons ^= changed; 732 733 if (dx || dy || dz || changed) { 734 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 735 s = spltty(); 736 wsmouse_input(psc->sc_wsmousedev, 737 buttons, dx, dy, dz, 0, 738 WSMOUSE_INPUT_DELTA); 739 splx(s); 740 } 741 } 742 743 static void 744 pms_synaptics_input(void *vsc, int data) 745 { 746 struct pms_softc *psc = vsc; 747 struct timeval diff; 748 749 if (!psc->sc_enabled) { 750 /* Interrupts are not expected. Discard the byte. */ 751 return; 752 } 753 754 getmicrouptime(&psc->current); 755 756 if (psc->inputstate > 0) { 757 timersub(&psc->current, &psc->last, &diff); 758 if (diff.tv_sec > 0 || diff.tv_usec >= 40000) { 759 printf("%s: pms_input: unusual delay (%ld.%06ld s), " 760 "scheduling reset\n", psc->sc_dev.dv_xname, 761 (long)diff.tv_sec, (long)diff.tv_usec); 762 psc->inputstate = 0; 763 psc->sc_enabled = 0; 764 wakeup(&psc->sc_enabled); 765 return; 766 } 767 } 768 psc->last = psc->current; 769 770 switch (psc->inputstate) { 771 case 0: 772 if ((data & 0xc8) != 0x80) { 773 #ifdef SYNAPTICSDEBUG 774 printf("%s: pms_input: 0x%02x out of sync\n", 775 psc->sc_dev.dv_xname, data); 776 #endif 777 return; /* not in sync yet, discard input */ 778 } 779 /*FALLTHROUGH*/ 780 781 case 3: 782 if ((data & 8) == 8) { 783 #ifdef SYNAPTICSDEBUG 784 printf("%s: pms_input: dropped in relative mode, " 785 "reset\n", psc->sc_dev.dv_xname); 786 #endif 787 psc->inputstate = 0; 788 psc->sc_enabled = 0; 789 wakeup(&psc->sc_enabled); 790 return; 791 } 792 } 793 794 psc->packet[psc->inputstate++] = data & 0xff; 795 if (psc->inputstate == 6) { 796 /* 797 * We have a complete packet. 798 * Extract the pertinent details. 799 */ 800 psc->inputstate = 0; 801 802 if ((psc->packet[0] & 0xfc) == 0x84 && 803 (psc->packet[3] & 0xcc) == 0xc4) { 804 /* PS/2 passthrough */ 805 pms_synaptics_passthrough(psc); 806 } else { 807 pms_synaptics_parse(psc); 808 } 809 } 810 } 811 812 static inline int 813 synaptics_finger_detect(struct synaptics_softc *sc, struct synaptics_packet *sp, 814 int *palmp) 815 { 816 int fingers; 817 818 /* Assume no palm */ 819 *palmp = 0; 820 821 /* 822 * Apply some hysteresis when checking for a finger. 823 * When the finger is first applied, we ignore it until the 824 * pressure exceeds the 'high' threshold. The finger is considered 825 * removed only when pressure falls beneath the 'low' threshold. 826 */ 827 if ((sc->prev_fingers == 0 && sp->sp_z > synaptics_finger_high) || 828 (sc->prev_fingers != 0 && sp->sp_z > synaptics_finger_low)) 829 fingers = 1; 830 else 831 fingers = 0; 832 833 /* 834 * If the pad can't do palm detection, skip the rest. 835 */ 836 if (fingers == 0 || (sc->flags & SYN_FLAG_HAS_PALM_DETECT) == 0) 837 return (fingers); 838 839 /* 840 * Palm detection 841 */ 842 if (sp->sp_z > SYNAPTICS_FINGER_FLAT && 843 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN) 844 *palmp = 1; 845 846 if (sc->prev_fingers == 0 && 847 (sp->sp_z > SYNAPTICS_FINGER_FLAT || 848 sp->sp_w >= SYNAPTICS_WIDTH_PALM_MIN)) { 849 /* 850 * Contact area or pressure is too great to be a finger. 851 * Just ignore it for now. 852 */ 853 return (0); 854 } 855 856 /* 857 * Detect 2 and 3 fingers if supported, but only if multiple 858 * fingers appear within the tap gesture time period. 859 */ 860 if (sc->flags & SYN_FLAG_HAS_MULTI_FINGER && 861 SYN_TIME(sc, sc->gesture_start_packet) < synaptics_gesture_length) { 862 switch (sp->sp_w) { 863 case SYNAPTICS_WIDTH_TWO_FINGERS: 864 fingers = 2; 865 break; 866 867 case SYNAPTICS_WIDTH_THREE_OR_MORE: 868 fingers = 3; 869 break; 870 871 case SYNAPTICS_WIDTH_PEN: 872 fingers = 1; 873 break; 874 875 default: 876 /* 877 * The width value can report spurious single-finger 878 * events after a multi-finger event. 879 */ 880 if (sc->prev_fingers > 1) 881 fingers = sc->prev_fingers; 882 else 883 fingers = 1; 884 break; 885 } 886 } 887 888 return (fingers); 889 } 890 891 static inline void 892 synaptics_gesture_detect(struct synaptics_softc *sc, 893 struct synaptics_packet *sp, int fingers) 894 { 895 int gesture_len, gesture_move_x, gesture_move_y, gesture_buttons; 896 int set_buttons; 897 898 gesture_len = SYN_TIME(sc, sc->gesture_start_packet); 899 gesture_buttons = sc->gesture_buttons; 900 901 if (fingers && sc->prev_fingers == 0) { 902 /* 903 * Finger was just applied. 904 * If the previous gesture was a single-click, set things 905 * up to deal with a possible drag or double-click gesture. 906 * Basically, if the finger is removed again within 907 * 'synaptics_gesture_length' packets, this is treated 908 * as a double-click. Otherwise we will emulate holding 909 * the left button down whilst dragging the mouse. 910 */ 911 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) 912 sc->gesture_type |= SYN_GESTURE_DRAG; 913 914 sc->gesture_start_x = sp->sp_x; 915 sc->gesture_start_y = sp->sp_y; 916 sc->gesture_start_packet = sc->total_packets; 917 } else 918 if (fingers == 0 && sc->prev_fingers != 0) { 919 /* 920 * Finger was just removed. 921 * Check if the contact time and finger movement were 922 * small enough to qualify as a gesture. 923 * Ignore finger movement if multiple fingers were 924 * detected (the pad may report coordinates for any 925 * of the fingers). 926 */ 927 gesture_move_x = abs(sc->gesture_start_x - sp->sp_x); 928 gesture_move_y = abs(sc->gesture_start_y - sp->sp_y); 929 930 if (gesture_len < synaptics_gesture_length && 931 (sc->prev_fingers > 1 || 932 (gesture_move_x < synaptics_gesture_move && 933 gesture_move_y < synaptics_gesture_move))) { 934 /* 935 * Looking good so far. 936 */ 937 if (SYN_IS_DRAG(sc->gesture_type)) { 938 /* 939 * Promote this gesture to double-click. 940 */ 941 sc->gesture_type |= SYN_GESTURE_DOUBLE; 942 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 943 } else { 944 /* 945 * Single tap gesture. Set the tap length timer 946 * and flag a single-click. 947 */ 948 sc->gesture_tap_packet = sc->total_packets; 949 sc->gesture_type |= SYN_GESTURE_SINGLE; 950 951 /* 952 * The gesture can be modified depending on 953 * the number of fingers detected. 954 * 955 * 1: Normal left button emulation. 956 * 2: Either middle button or right button 957 * depending on the value of the two_fingers 958 * sysctl variable. 959 * 3: Right button. 960 */ 961 switch (sc->prev_fingers) { 962 case 2: 963 if (synaptics_two_fingers_emul == 1) 964 gesture_buttons |= PMS_RBUTMASK; 965 else 966 if (synaptics_two_fingers_emul == 2) 967 gesture_buttons |= PMS_MBUTMASK; 968 break; 969 case 3: 970 gesture_buttons |= PMS_RBUTMASK; 971 break; 972 default: 973 gesture_buttons |= PMS_LBUTMASK; 974 break; 975 } 976 } 977 } 978 979 /* 980 * Always clear drag state when the finger is removed. 981 */ 982 sc->gesture_type &= ~SYN_GESTURE_DRAG; 983 } 984 985 if (sc->gesture_type == 0) { 986 /* 987 * There is no gesture in progress. 988 * Clear emulated button state. 989 */ 990 sc->gesture_buttons = 0; 991 return; 992 } 993 994 /* 995 * A gesture is in progress. 996 */ 997 set_buttons = 0; 998 999 if (SYN_IS_SINGLE_TAP(sc->gesture_type)) { 1000 /* 1001 * Single-click. 1002 * Activate the relevant button(s) until the 1003 * gesture tap timer has expired. 1004 */ 1005 if (SYN_TIME(sc, sc->gesture_tap_packet) < 1006 synaptics_gesture_length) 1007 set_buttons = 1; 1008 else 1009 sc->gesture_type &= ~SYN_GESTURE_SINGLE; 1010 } else 1011 if (SYN_IS_DOUBLE_TAP(sc->gesture_type) && sc->prev_fingers == 0) { 1012 /* 1013 * Double-click. 1014 * Activate the relevant button(s) once. 1015 */ 1016 set_buttons = 1; 1017 sc->gesture_type &= ~SYN_GESTURE_DOUBLE; 1018 } 1019 1020 if (set_buttons || SYN_IS_DRAG(sc->gesture_type)) { 1021 /* 1022 * Single-click and drag. 1023 * Maintain button state until the finger is removed. 1024 */ 1025 sp->sp_left |= gesture_buttons & PMS_LBUTMASK; 1026 sp->sp_right |= gesture_buttons & PMS_RBUTMASK; 1027 sp->sp_middle |= gesture_buttons & PMS_MBUTMASK; 1028 } 1029 1030 sc->gesture_buttons = gesture_buttons; 1031 } 1032 1033 static inline int 1034 synaptics_filter_policy(struct synaptics_softc *sc, int *history, int value) 1035 { 1036 int a, b, rv, count; 1037 1038 count = sc->total_packets; 1039 1040 /* 1041 * Once we've accumulated at least SYN_HIST_SIZE values, combine 1042 * each new value with the previous two and return the average. 1043 * 1044 * This is necessary when the touchpad is operating in 80 packets 1045 * per second mode, as it performs little internal filtering on 1046 * reported values. 1047 * 1048 * Using a rolling average helps to filter out jitter caused by 1049 * tiny finger movements. 1050 */ 1051 if (sc->movement_history >= SYN_HIST_SIZE) { 1052 a = (history[(count + 0) % SYN_HIST_SIZE] + 1053 history[(count + 1) % SYN_HIST_SIZE]) / 2; 1054 1055 b = (value + history[(count + 0) % SYN_HIST_SIZE]) / 2; 1056 1057 rv = b - a; 1058 1059 /* 1060 * Don't report the movement if it's below a certain 1061 * threshold. 1062 */ 1063 if (abs(rv) < synaptics_movement_threshold) 1064 rv = 0; 1065 } else 1066 rv = 0; 1067 1068 /* 1069 * Add the new value to the history buffer. 1070 */ 1071 history[(count + 1) % SYN_HIST_SIZE] = value; 1072 1073 return (rv); 1074 } 1075 1076 /* Edge detection */ 1077 #define SYN_EDGE_TOP 1 1078 #define SYN_EDGE_BOTTOM 2 1079 #define SYN_EDGE_LEFT 4 1080 #define SYN_EDGE_RIGHT 8 1081 1082 static inline int 1083 synaptics_check_edge(int x, int y) 1084 { 1085 int rv = 0; 1086 1087 if (x < synaptics_edge_left) 1088 rv |= SYN_EDGE_LEFT; 1089 else 1090 if (x > synaptics_edge_right) 1091 rv |= SYN_EDGE_RIGHT; 1092 1093 if (y < synaptics_edge_bottom) 1094 rv |= SYN_EDGE_BOTTOM; 1095 else 1096 if (y > synaptics_edge_top) 1097 rv |= SYN_EDGE_TOP; 1098 1099 return (rv); 1100 } 1101 1102 static inline int 1103 synaptics_edge_motion(struct synaptics_softc *sc, int delta, int dir) 1104 { 1105 1106 /* 1107 * When edge motion is enabled, synaptics_edge_motion_delta is 1108 * combined with the current delta, together with the direction 1109 * in which to simulate the motion. The result is added to 1110 * the delta derived from finger movement. This provides a smooth 1111 * transition from finger movement to edge motion. 1112 */ 1113 delta = synaptics_edge_motion_delta + (dir * delta); 1114 if (delta < 0) 1115 return (0); 1116 if (delta > synaptics_edge_motion_delta) 1117 return (synaptics_edge_motion_delta); 1118 return (delta); 1119 } 1120 1121 static inline int 1122 synaptics_scale(int delta, int scale, int *remp) 1123 { 1124 int rv; 1125 1126 /* 1127 * Scale the raw delta in Synaptics coordinates (0-6143) into 1128 * something more reasonable by dividing the raw delta by a 1129 * scale factor. Any remainder from the previous scale result 1130 * is added to the current delta before scaling. 1131 * This prevents loss of resolution for very small/slow 1132 * movements of the finger. 1133 */ 1134 delta += *remp; 1135 rv = delta / scale; 1136 *remp = delta % scale; 1137 1138 return (rv); 1139 } 1140 1141 static inline void 1142 synaptics_movement(struct synaptics_softc *sc, struct synaptics_packet *sp, 1143 int *dxp, int *dyp) 1144 { 1145 int dx, dy, edge; 1146 1147 /* 1148 * Compute the next values of dx and dy 1149 */ 1150 dx = synaptics_filter_policy(sc, sc->history_x, sp->sp_x); 1151 dy = synaptics_filter_policy(sc, sc->history_y, sp->sp_y); 1152 1153 /* 1154 * If we're dealing with a drag gesture, and the finger moves to 1155 * the edge of the touchpad, apply edge motion emulation if it 1156 * is enabled. 1157 */ 1158 if (synaptics_edge_motion_delta && SYN_IS_DRAG(sc->gesture_type)) { 1159 edge = synaptics_check_edge(sp->sp_x, sp->sp_y); 1160 1161 if (edge & SYN_EDGE_LEFT) 1162 dx -= synaptics_edge_motion(sc, dx, 1); 1163 if (edge & SYN_EDGE_RIGHT) 1164 dx += synaptics_edge_motion(sc, dx, -1); 1165 if (edge & SYN_EDGE_BOTTOM) 1166 dy -= synaptics_edge_motion(sc, dy, 1); 1167 if (edge & SYN_EDGE_TOP) 1168 dy += synaptics_edge_motion(sc, dy, -1); 1169 } 1170 1171 /* 1172 * Apply scaling to both deltas 1173 */ 1174 dx = synaptics_scale(dx, synaptics_scale_x, &sc->rem_x); 1175 dy = synaptics_scale(dy, synaptics_scale_y, &sc->rem_y); 1176 1177 /* 1178 * Clamp deltas to specified maximums. 1179 */ 1180 if (dx > synaptics_max_speed_x) 1181 dx = synaptics_max_speed_x; 1182 if (dy > synaptics_max_speed_y) 1183 dy = synaptics_max_speed_y; 1184 1185 *dxp = dx; 1186 *dyp = dy; 1187 1188 sc->movement_history++; 1189 } 1190 1191 static void 1192 pms_synaptics_process_packet(struct pms_softc *psc, struct synaptics_packet *sp) 1193 { 1194 struct synaptics_softc *sc = &psc->u.synaptics; 1195 int dx, dy, dz; 1196 int fingers, palm, buttons, changed; 1197 int s; 1198 1199 /* 1200 * Do Z-axis emulation using up/down buttons if required. 1201 * Note that the pad will send a one second burst of packets 1202 * when an up/down button is pressed and held. At the moment 1203 * we don't deal with auto-repeat, so convert the burst into 1204 * a one-shot. 1205 */ 1206 dz = 0; 1207 if (synaptics_up_down_emul == 2) { 1208 if (sc->up_down == 0) { 1209 if (sp->sp_up && sp->sp_down) { 1210 /* 1211 * Most up/down buttons will be actuated using 1212 * a rocker switch, so we should never see 1213 * them both simultaneously. But just in case, 1214 * treat this situation as a middle button 1215 * event. 1216 */ 1217 sp->sp_middle = 1; 1218 } else 1219 if (sp->sp_up) 1220 dz = -synaptics_up_down_motion_delta; 1221 else 1222 if (sp->sp_down) 1223 dz = synaptics_up_down_motion_delta; 1224 } 1225 1226 sc->up_down = sp->sp_up | sp->sp_down; 1227 sp->sp_up = sp->sp_down = 0; 1228 } 1229 1230 /* 1231 * Determine whether or not a finger is on the pad. 1232 * On some pads, this will return the number of fingers 1233 * detected. 1234 */ 1235 fingers = synaptics_finger_detect(sc, sp, &palm); 1236 1237 /* 1238 * Do gesture processing only if we didn't detect a palm. 1239 */ 1240 if (palm == 0) 1241 synaptics_gesture_detect(sc, sp, fingers); 1242 else 1243 sc->gesture_type = sc->gesture_buttons = 0; 1244 1245 /* 1246 * Determine what buttons to report 1247 */ 1248 buttons = (sp->sp_left ? 0x1 : 0) | 1249 (sp->sp_middle ? 0x2 : 0) | 1250 (sp->sp_right ? 0x4 : 0) | 1251 (sp->sp_up ? 0x8 : 0) | 1252 (sp->sp_down ? 0x10 : 0); 1253 changed = buttons ^ (psc->buttons & 0x1f); 1254 psc->buttons ^= changed; 1255 1256 sc->prev_fingers = fingers; 1257 sc->total_packets++; 1258 1259 /* 1260 * Do movement processing IFF we have a single finger and no palm. 1261 */ 1262 if (fingers == 1 && palm == 0) 1263 synaptics_movement(sc, sp, &dx, &dy); 1264 else { 1265 /* 1266 * No valid finger. Therefore no movement. 1267 */ 1268 sc->movement_history = 0; 1269 sc->rem_x = sc->rem_y = 0; 1270 dx = dy = 0; 1271 } 1272 1273 /* 1274 * Pass the final results up to wsmouse_input() if necessary. 1275 */ 1276 if (dx || dy || dz || changed) { 1277 buttons = (psc->buttons & 0x1f) | ((psc->buttons >> 5) & 0x7); 1278 s = spltty(); 1279 wsmouse_input(psc->sc_wsmousedev, 1280 buttons, 1281 dx, dy, dz, 0, 1282 WSMOUSE_INPUT_DELTA); 1283 splx(s); 1284 } 1285 } 1286
Indexes created Wed Oct 01 19:09:53 GMT 2025