1/* 2 * Copyright (c) 2014 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> and was subsequently ported, 6 * modified and enhanced for FreeBSD by Michael Gmelin <freebsd@grem.de>. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 3. Neither the name of The DragonFly Project nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific, prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <sys/cdefs.h> 37/* 38 * CYAPA - Cypress APA trackpad with I2C Interface driver 39 * 40 * Based on DragonFlyBSD's cyapa driver, which referenced the linux 41 * cyapa.c driver to figure out the bootstrapping and commands. 42 * 43 * Unable to locate any datasheet for the device. 44 * 45 * 46 * Trackpad layout: 47 * 48 * 2/3 1/3 49 * +--------------------+------------+ 50 * | | Middle | 51 * | | Button | 52 * | Left | | 53 * | Button +------------+ 54 * | | Right | 55 * | | Button | 56 * +--------------------+............| 57 * | Thumb/Button Area | 15% 58 * +---------------------------------+ 59 * 60 * 61 * FEATURES 62 * 63 * IMPS/2 emulation - Emulates the IntelliMouse protocol. 64 * 65 * Jitter supression - Implements 2-pixel hysteresis with memory. 66 * 67 * Jump detecion - Detect jumps caused by touchpad. 68 * 69 * Two finger scrolling - Use two fingers for Z axis scrolling. 70 * 71 * Button down/2nd finger - While one finger clicks and holds down the 72 * touchpad, the second one can be used to move 73 * the mouse cursor. Useful for drawing or 74 * selecting text. 75 * 76 * Thumb/Button Area - The lower 15%* of the trackpad will not affect 77 * the mouse cursor position. This allows for high 78 * precision clicking, by controlling the cursor 79 * with the index finger and pushing/holding the 80 * pad down with the thumb. 81 * * can be changed using sysctl 82 * 83 * Track-pad button - Push physical button. Left 2/3rds of the pad 84 * will issue a LEFT button event, upper right 85 * corner will issue a MIDDLE button event, 86 * lower right corner will issue a RIGHT button 87 * event. Optional tap support can be enabled 88 * and configured using sysctl. 89 * 90 * WARNINGS 91 * 92 * These trackpads get confused when three or more fingers are down on the 93 * same horizontal axis and will start to glitch the finger detection. 94 * Removing your hand for a few seconds will allow the trackpad to 95 * recalibrate. Generally speaking, when using three or more fingers 96 * please try to place at least one finger off-axis (a little above or 97 * below) the other two. 98 */ 99 100#include "opt_evdev.h" 101 102#include <sys/param.h> 103#include <sys/bus.h> 104#include <sys/conf.h> 105#include <sys/event.h> 106#include <sys/fcntl.h> 107#include <sys/kernel.h> 108#include <sys/kthread.h> 109#include <sys/lock.h> 110#include <sys/lockmgr.h> 111#include <sys/malloc.h> 112#include <sys/mbuf.h> 113#include <sys/module.h> 114#include <sys/mouse.h> 115#include <sys/mutex.h> 116#include <sys/poll.h> 117#include <sys/selinfo.h> 118#include <sys/sysctl.h> 119#include <sys/sysctl.h> 120#include <sys/systm.h> 121#include <sys/systm.h> 122#include <sys/uio.h> 123#include <sys/vnode.h> 124 125#include <dev/iicbus/iiconf.h> 126#include <dev/iicbus/iicbus.h> 127#include <dev/cyapa/cyapa.h> 128 129#ifdef EVDEV_SUPPORT 130#include <dev/evdev/input.h> 131#include <dev/evdev/evdev.h> 132#endif 133 134#include "iicbus_if.h" 135#include "bus_if.h" 136#include "device_if.h" 137 138#define CYAPA_BUFSIZE 128 /* power of 2 */ 139#define CYAPA_BUFMASK (CYAPA_BUFSIZE - 1) 140 141#define ZSCALE 15 142 143#define TIME_TO_IDLE (hz * 10) 144#define TIME_TO_RESET (hz * 3) 145 146static MALLOC_DEFINE(M_CYAPA, "cyapa", "CYAPA device data"); 147 148struct cyapa_fifo { 149 int rindex; 150 int windex; 151 char buf[CYAPA_BUFSIZE]; 152}; 153 154struct cyapa_softc { 155 device_t dev; 156 int count; /* >0 if device opened */ 157 struct cdev *devnode; 158 struct selinfo selinfo; 159 struct mtx mutex; 160 struct intr_config_hook intr_hook; 161#ifdef EVDEV_SUPPORT 162 struct evdev_dev *evdev; 163#endif 164 165 int cap_resx; 166 int cap_resy; 167 int cap_phyx; 168 int cap_phyy; 169 uint8_t cap_buttons; 170 171 int detaching; /* driver is detaching */ 172 int poll_thread_running; /* poll thread is running */ 173 174 /* PS/2 mouse emulation */ 175 int track_x; /* current tracking */ 176 int track_y; 177 int track_z; 178 int track_z_ticks; 179 uint16_t track_but; 180 char track_id; /* first finger id */ 181 int track_nfingers; 182 int delta_x; /* accumulation -> report */ 183 int delta_y; 184 int delta_z; 185 int fuzz_x; 186 int fuzz_y; 187 int fuzz_z; 188 int touch_x; /* touch down coordinates */ 189 int touch_y; 190 int touch_z; 191 int finger1_ticks; 192 int finger2_ticks; 193 int finger3_ticks; 194 uint16_t reported_but; 195 196 struct cyapa_fifo rfifo; /* device->host */ 197 struct cyapa_fifo wfifo; /* host->device */ 198 uint8_t ps2_cmd; /* active p2_cmd waiting for data */ 199 uint8_t ps2_acked; 200 int active_tick; 201 int data_signal; 202 int blocked; 203 int isselect; 204 int reporting_mode; /* 0=disabled 1=enabled */ 205 int scaling_mode; /* 0=1:1 1=2:1 */ 206 int remote_mode; /* 0 for streaming mode */ 207 int zenabled; /* z-axis enabled (mode 1 or 2) */ 208 mousehw_t hw; /* hardware information */ 209 mousemode_t mode; /* mode */ 210 int poll_ticks; 211}; 212 213struct cyapa_cdevpriv { 214 struct cyapa_softc *sc; 215}; 216 217#define CYPOLL_SHUTDOWN 0x0001 218 219static void cyapa_poll_thread(void *arg); 220static int cyapa_raw_input(struct cyapa_softc *sc, struct cyapa_regs *regs, 221 int freq); 222static void cyapa_set_power_mode(struct cyapa_softc *sc, int mode); 223 224static int fifo_empty(struct cyapa_softc *sc, struct cyapa_fifo *fifo); 225static size_t fifo_ready(struct cyapa_softc *sc, struct cyapa_fifo *fifo); 226static char *fifo_read(struct cyapa_softc *sc, struct cyapa_fifo *fifo, 227 size_t n); 228static char *fifo_write(struct cyapa_softc *sc, struct cyapa_fifo *fifo, 229 size_t n); 230static uint8_t fifo_read_char(struct cyapa_softc *sc, 231 struct cyapa_fifo *fifo); 232static void fifo_write_char(struct cyapa_softc *sc, struct cyapa_fifo *fifo, 233 uint8_t c); 234static size_t fifo_space(struct cyapa_softc *sc, struct cyapa_fifo *fifo); 235static void fifo_reset(struct cyapa_softc *sc, struct cyapa_fifo *fifo); 236 237static int cyapa_fuzz(int delta, int *fuzz); 238 239static int cyapa_idle_freq = 1; 240SYSCTL_INT(_debug, OID_AUTO, cyapa_idle_freq, CTLFLAG_RW, 241 &cyapa_idle_freq, 0, "Scan frequency in idle mode"); 242static int cyapa_slow_freq = 20; 243SYSCTL_INT(_debug, OID_AUTO, cyapa_slow_freq, CTLFLAG_RW, 244 &cyapa_slow_freq, 0, "Scan frequency in slow mode "); 245static int cyapa_norm_freq = 100; 246SYSCTL_INT(_debug, OID_AUTO, cyapa_norm_freq, CTLFLAG_RW, 247 &cyapa_norm_freq, 0, "Normal scan frequency"); 248static int cyapa_minpressure = 12; 249SYSCTL_INT(_debug, OID_AUTO, cyapa_minpressure, CTLFLAG_RW, 250 &cyapa_minpressure, 0, "Minimum pressure to detect finger"); 251static int cyapa_enable_tapclick = 0; 252SYSCTL_INT(_debug, OID_AUTO, cyapa_enable_tapclick, CTLFLAG_RW, 253 &cyapa_enable_tapclick, 0, "Enable tap to click"); 254static int cyapa_tapclick_min_ticks = 1; 255SYSCTL_INT(_debug, OID_AUTO, cyapa_tapclick_min_ticks, CTLFLAG_RW, 256 &cyapa_tapclick_min_ticks, 0, "Minimum tap duration for click"); 257static int cyapa_tapclick_max_ticks = 8; 258SYSCTL_INT(_debug, OID_AUTO, cyapa_tapclick_max_ticks, CTLFLAG_RW, 259 &cyapa_tapclick_max_ticks, 0, "Maximum tap duration for click"); 260static int cyapa_move_min_ticks = 4; 261SYSCTL_INT(_debug, OID_AUTO, cyapa_move_min_ticks, CTLFLAG_RW, 262 &cyapa_move_min_ticks, 0, 263 "Minimum ticks before cursor position is changed"); 264static int cyapa_scroll_wait_ticks = 0; 265SYSCTL_INT(_debug, OID_AUTO, cyapa_scroll_wait_ticks, CTLFLAG_RW, 266 &cyapa_scroll_wait_ticks, 0, 267 "Wait N ticks before starting to scroll"); 268static int cyapa_scroll_stick_ticks = 15; 269SYSCTL_INT(_debug, OID_AUTO, cyapa_scroll_stick_ticks, CTLFLAG_RW, 270 &cyapa_scroll_stick_ticks, 0, 271 "Prevent cursor move on single finger for N ticks after scroll"); 272static int cyapa_thumbarea_percent = 15; 273SYSCTL_INT(_debug, OID_AUTO, cyapa_thumbarea_percent, CTLFLAG_RW, 274 &cyapa_thumbarea_percent, 0, 275 "Size of bottom thumb area in percent"); 276 277static int cyapa_debug = 0; 278SYSCTL_INT(_debug, OID_AUTO, cyapa_debug, CTLFLAG_RW, 279 &cyapa_debug, 0, "Enable debugging"); 280static int cyapa_reset = 0; 281SYSCTL_INT(_debug, OID_AUTO, cyapa_reset, CTLFLAG_RW, 282 &cyapa_reset, 0, "Reset track pad"); 283 284static int 285cyapa_read_bytes(device_t dev, uint8_t reg, uint8_t *val, int cnt) 286{ 287 uint16_t addr = iicbus_get_addr(dev); 288 struct iic_msg msgs[] = { 289 { addr, IIC_M_WR | IIC_M_NOSTOP, 1, ® }, 290 { addr, IIC_M_RD, cnt, val }, 291 }; 292 293 return (iicbus_transfer(dev, msgs, nitems(msgs))); 294} 295 296static int 297cyapa_write_bytes(device_t dev, uint8_t reg, const uint8_t *val, int cnt) 298{ 299 uint16_t addr = iicbus_get_addr(dev); 300 struct iic_msg msgs[] = { 301 { addr, IIC_M_WR | IIC_M_NOSTOP, 1, ® }, 302 { addr, IIC_M_WR | IIC_M_NOSTART, cnt, __DECONST(uint8_t *, val) }, 303 }; 304 305 return (iicbus_transfer(dev, msgs, nitems(msgs))); 306} 307 308static void 309cyapa_lock(struct cyapa_softc *sc) 310{ 311 312 mtx_lock(&sc->mutex); 313} 314 315static void 316cyapa_unlock(struct cyapa_softc *sc) 317{ 318 319 mtx_unlock(&sc->mutex); 320} 321 322#define CYAPA_LOCK_ASSERT(sc) mtx_assert(&(sc)->mutex, MA_OWNED); 323 324/* 325 * Notify if possible receive data ready. Must be called 326 * with sc->mutex held (cyapa_lock(sc)). 327 */ 328static void 329cyapa_notify(struct cyapa_softc *sc) 330{ 331 332 CYAPA_LOCK_ASSERT(sc); 333 334 if (sc->data_signal || !fifo_empty(sc, &sc->rfifo)) { 335 KNOTE_LOCKED(&sc->selinfo.si_note, 0); 336 if (sc->blocked || sc->isselect) { 337 if (sc->blocked) { 338 sc->blocked = 0; 339 wakeup(&sc->blocked); 340 } 341 if (sc->isselect) { 342 sc->isselect = 0; 343 selwakeup(&sc->selinfo); 344 } 345 } 346 } 347} 348 349/* 350 * Initialize the device 351 */ 352static int 353init_device(device_t dev, struct cyapa_cap *cap, int probe) 354{ 355 static char bl_exit[] = { 356 0x00, 0xff, 0xa5, 0x00, 0x01, 357 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; 358 static char bl_deactivate[] = { 359 0x00, 0xff, 0x3b, 0x00, 0x01, 360 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; 361 struct cyapa_boot_regs boot; 362 int error; 363 int retries; 364 365 /* Get status */ 366 error = cyapa_read_bytes(dev, CMD_BOOT_STATUS, 367 (void *)&boot, sizeof(boot)); 368 if (error) 369 goto done; 370 371 /* 372 * Bootstrap the device if necessary. It can take up to 2 seconds 373 * for the device to fully initialize. 374 */ 375 retries = 20; 376 while ((boot.stat & CYAPA_STAT_RUNNING) == 0 && retries > 0) { 377 if (boot.boot & CYAPA_BOOT_BUSY) { 378 /* Busy, wait loop. */ 379 } else if (boot.error & CYAPA_ERROR_BOOTLOADER) { 380 /* Magic */ 381 error = cyapa_write_bytes(dev, CMD_BOOT_STATUS, 382 bl_deactivate, sizeof(bl_deactivate)); 383 if (error) 384 goto done; 385 } else { 386 /* Magic */ 387 error = cyapa_write_bytes(dev, CMD_BOOT_STATUS, 388 bl_exit, sizeof(bl_exit)); 389 if (error) 390 goto done; 391 } 392 pause("cyapab1", (hz * 2) / 10); 393 --retries; 394 error = cyapa_read_bytes(dev, CMD_BOOT_STATUS, 395 (void *)&boot, sizeof(boot)); 396 if (error) 397 goto done; 398 } 399 400 if (retries == 0) { 401 device_printf(dev, "Unable to bring device out of bootstrap\n"); 402 error = ENXIO; 403 goto done; 404 } 405 406 /* Check identity */ 407 if (cap) { 408 error = cyapa_read_bytes(dev, CMD_QUERY_CAPABILITIES, 409 (void *)cap, sizeof(*cap)); 410 411 if (strncmp(cap->prod_ida, "CYTRA", 5) != 0) { 412 device_printf(dev, "Product ID \"%5.5s\" mismatch\n", 413 cap->prod_ida); 414 error = ENXIO; 415 } 416 } 417 error = cyapa_read_bytes(dev, CMD_BOOT_STATUS, 418 (void *)&boot, sizeof(boot)); 419 420 if (probe == 0) /* official init */ 421 device_printf(dev, "cyapa init status %02x\n", boot.stat); 422 else if (probe == 2) 423 device_printf(dev, "cyapa reset status %02x\n", boot.stat); 424 425done: 426 if (error) 427 device_printf(dev, "Unable to initialize\n"); 428 return (error); 429} 430 431/* 432 * Start the polling thread 433 */ 434static void 435cyapa_start(void *xdev) 436{ 437 struct cyapa_softc *sc; 438 device_t dev = xdev; 439 440 sc = device_get_softc(dev); 441 442 config_intrhook_disestablish(&sc->intr_hook); 443 444 /* Setup input event tracking */ 445 cyapa_set_power_mode(sc, CMD_POWER_MODE_IDLE); 446 447 /* Start the polling thread */ 448 kthread_add(cyapa_poll_thread, sc, NULL, NULL, 449 0, 0, "cyapa-poll"); 450} 451 452static int cyapa_probe(device_t); 453static int cyapa_attach(device_t); 454static int cyapa_detach(device_t); 455static void cyapa_cdevpriv_dtor(void*); 456 457static device_method_t cyapa_methods[] = { 458 /* device interface */ 459 DEVMETHOD(device_probe, cyapa_probe), 460 DEVMETHOD(device_attach, cyapa_attach), 461 DEVMETHOD(device_detach, cyapa_detach), 462 463 DEVMETHOD_END 464}; 465 466static driver_t cyapa_driver = { 467 "cyapa", 468 cyapa_methods, 469 sizeof(struct cyapa_softc), 470}; 471 472static d_open_t cyapaopen; 473static d_ioctl_t cyapaioctl; 474static d_read_t cyaparead; 475static d_write_t cyapawrite; 476static d_kqfilter_t cyapakqfilter; 477static d_poll_t cyapapoll; 478 479static struct cdevsw cyapa_cdevsw = { 480 .d_version = D_VERSION, 481 .d_open = cyapaopen, 482 .d_ioctl = cyapaioctl, 483 .d_read = cyaparead, 484 .d_write = cyapawrite, 485 .d_kqfilter = cyapakqfilter, 486 .d_poll = cyapapoll, 487}; 488 489static int 490cyapa_probe(device_t dev) 491{ 492 struct cyapa_cap cap; 493 int addr; 494 int error; 495 496 addr = iicbus_get_addr(dev); 497 498 /* 499 * 0x67 - cypress trackpad on the acer c720 500 * (other devices might use other ids). 501 */ 502 if (addr != 0xce) 503 return (ENXIO); 504 505 error = init_device(dev, &cap, 1); 506 if (error != 0) 507 return (ENXIO); 508 509 device_set_desc(dev, "Cypress APA I2C Trackpad"); 510 511 return (BUS_PROBE_VENDOR); 512} 513 514static int 515cyapa_attach(device_t dev) 516{ 517 struct cyapa_softc *sc; 518 struct cyapa_cap cap; 519 int unit; 520 int addr; 521 522 sc = device_get_softc(dev); 523 sc->reporting_mode = 1; 524 525 unit = device_get_unit(dev); 526 addr = iicbus_get_addr(dev); 527 528 if (init_device(dev, &cap, 0)) 529 return (ENXIO); 530 531 mtx_init(&sc->mutex, "cyapa", NULL, MTX_DEF); 532 533 sc->dev = dev; 534 535 knlist_init_mtx(&sc->selinfo.si_note, &sc->mutex); 536 537 sc->cap_resx = ((cap.max_abs_xy_high << 4) & 0x0F00) | 538 cap.max_abs_x_low; 539 sc->cap_resy = ((cap.max_abs_xy_high << 8) & 0x0F00) | 540 cap.max_abs_y_low; 541 sc->cap_phyx = ((cap.phy_siz_xy_high << 4) & 0x0F00) | 542 cap.phy_siz_x_low; 543 sc->cap_phyy = ((cap.phy_siz_xy_high << 8) & 0x0F00) | 544 cap.phy_siz_y_low; 545 sc->cap_buttons = cap.buttons >> 3 & 546 (CYAPA_FNGR_LEFT | CYAPA_FNGR_RIGHT | CYAPA_FNGR_MIDDLE); 547 548 device_printf(dev, "%5.5s-%6.6s-%2.2s buttons=%c%c%c res=%dx%d\n", 549 cap.prod_ida, cap.prod_idb, cap.prod_idc, 550 ((sc->cap_buttons & CYAPA_FNGR_LEFT) ? 'L' : '-'), 551 ((sc->cap_buttons & CYAPA_FNGR_MIDDLE) ? 'M' : '-'), 552 ((sc->cap_buttons & CYAPA_FNGR_RIGHT) ? 'R' : '-'), 553 sc->cap_resx, sc->cap_resy); 554 555 sc->hw.buttons = 5; 556 sc->hw.iftype = MOUSE_IF_PS2; 557 sc->hw.type = MOUSE_MOUSE; 558 sc->hw.model = MOUSE_MODEL_INTELLI; 559 sc->hw.hwid = addr; 560 561 sc->mode.protocol = MOUSE_PROTO_PS2; 562 sc->mode.rate = 100; 563 sc->mode.resolution = 4; 564 sc->mode.accelfactor = 1; 565 sc->mode.level = 0; 566 sc->mode.packetsize = MOUSE_PS2_PACKETSIZE; 567 568 sc->intr_hook.ich_func = cyapa_start; 569 sc->intr_hook.ich_arg = sc->dev; 570 571#ifdef EVDEV_SUPPORT 572 sc->evdev = evdev_alloc(); 573 evdev_set_name(sc->evdev, device_get_desc(sc->dev)); 574 evdev_set_phys(sc->evdev, device_get_nameunit(sc->dev)); 575 evdev_set_id(sc->evdev, BUS_I2C, 0, 0, 1); 576 evdev_set_flag(sc->evdev, EVDEV_FLAG_MT_STCOMPAT); 577 evdev_set_flag(sc->evdev, EVDEV_FLAG_MT_AUTOREL); 578 579 evdev_support_event(sc->evdev, EV_SYN); 580 evdev_support_event(sc->evdev, EV_ABS); 581 evdev_support_event(sc->evdev, EV_KEY); 582 evdev_support_prop(sc->evdev, INPUT_PROP_POINTER); 583 if (sc->cap_buttons & CYAPA_FNGR_LEFT) 584 evdev_support_key(sc->evdev, BTN_LEFT); 585 if (sc->cap_buttons & CYAPA_FNGR_RIGHT) 586 evdev_support_key(sc->evdev, BTN_RIGHT); 587 if (sc->cap_buttons & CYAPA_FNGR_MIDDLE) 588 evdev_support_key(sc->evdev, BTN_MIDDLE); 589 if (sc->cap_buttons == CYAPA_FNGR_LEFT) 590 evdev_support_prop(sc->evdev, INPUT_PROP_BUTTONPAD); 591 592 evdev_support_abs(sc->evdev, ABS_MT_SLOT, 593 0, CYAPA_MAX_MT - 1, 0, 0, 0); 594 evdev_support_abs(sc->evdev, ABS_MT_TRACKING_ID, -1, 15, 0, 0, 0); 595 evdev_support_abs(sc->evdev, ABS_MT_POSITION_X, 0, sc->cap_resx, 0, 0, 596 sc->cap_phyx != 0 ? sc->cap_resx / sc->cap_phyx : 0); 597 evdev_support_abs(sc->evdev, ABS_MT_POSITION_Y, 0, sc->cap_resy, 0, 0, 598 sc->cap_phyy != 0 ? sc->cap_resy / sc->cap_phyy : 0); 599 evdev_support_abs(sc->evdev, ABS_MT_PRESSURE, 0, 255, 0, 0, 0); 600 601 if (evdev_register(sc->evdev) != 0) { 602 mtx_destroy(&sc->mutex); 603 return (ENOMEM); 604 } 605#endif 606 607 /* Postpone start of the polling thread until sleep is available */ 608 if (config_intrhook_establish(&sc->intr_hook) != 0) { 609#ifdef EVDEV_SUPPORT 610 evdev_free(sc->evdev); 611#endif 612 mtx_destroy(&sc->mutex); 613 return (ENOMEM); 614 } 615 616 sc->devnode = make_dev(&cyapa_cdevsw, unit, 617 UID_ROOT, GID_WHEEL, 0600, "cyapa%d", unit); 618 619 sc->devnode->si_drv1 = sc; 620 621 return (0); 622} 623 624static int 625cyapa_detach(device_t dev) 626{ 627 struct cyapa_softc *sc; 628 629 sc = device_get_softc(dev); 630 631 /* Cleanup poller thread */ 632 cyapa_lock(sc); 633 while (sc->poll_thread_running) { 634 sc->detaching = 1; 635 mtx_sleep(&sc->detaching, &sc->mutex, PCATCH, "cyapadet", hz); 636 } 637 cyapa_unlock(sc); 638 639 destroy_dev(sc->devnode); 640 641 knlist_clear(&sc->selinfo.si_note, 0); 642 seldrain(&sc->selinfo); 643 knlist_destroy(&sc->selinfo.si_note); 644#ifdef EVDEV_SUPPORT 645 evdev_free(sc->evdev); 646#endif 647 648 mtx_destroy(&sc->mutex); 649 650 return (0); 651} 652 653/* 654 * USER DEVICE I/O FUNCTIONS 655 */ 656static int 657cyapaopen(struct cdev *dev, int oflags, int devtype, struct thread *td) 658{ 659 struct cyapa_cdevpriv *priv; 660 int error; 661 662 priv = malloc(sizeof(*priv), M_CYAPA, M_WAITOK | M_ZERO); 663 priv->sc = dev->si_drv1; 664 665 error = devfs_set_cdevpriv(priv, cyapa_cdevpriv_dtor); 666 if (error == 0) { 667 cyapa_lock(priv->sc); 668 priv->sc->count++; 669 cyapa_unlock(priv->sc); 670 } 671 else 672 free(priv, M_CYAPA); 673 674 return (error); 675} 676 677static void 678cyapa_cdevpriv_dtor(void *data) 679{ 680 struct cyapa_cdevpriv *priv; 681 682 priv = data; 683 KASSERT(priv != NULL, ("cyapa cdevpriv should not be NULL!")); 684 685 cyapa_lock(priv->sc); 686 priv->sc->count--; 687 cyapa_unlock(priv->sc); 688 689 free(priv, M_CYAPA); 690} 691 692static int 693cyaparead(struct cdev *dev, struct uio *uio, int ioflag) 694{ 695 struct cyapa_softc *sc; 696 int error; 697 int didread; 698 size_t n; 699 char* ptr; 700 701 sc = dev->si_drv1; 702 /* If buffer is empty, load a new event if it is ready */ 703 cyapa_lock(sc); 704again: 705 if (fifo_empty(sc, &sc->rfifo) && 706 (sc->data_signal || sc->delta_x || sc->delta_y || 707 sc->track_but != sc->reported_but)) { 708 uint8_t c0; 709 uint16_t but; 710 int delta_x; 711 int delta_y; 712 int delta_z; 713 714 /* Accumulate delta_x, delta_y */ 715 sc->data_signal = 0; 716 delta_x = sc->delta_x; 717 delta_y = sc->delta_y; 718 delta_z = sc->delta_z; 719 if (delta_x > 255) { 720 delta_x = 255; 721 sc->data_signal = 1; 722 } 723 if (delta_x < -256) { 724 delta_x = -256; 725 sc->data_signal = 1; 726 } 727 if (delta_y > 255) { 728 delta_y = 255; 729 sc->data_signal = 1; 730 } 731 if (delta_y < -256) { 732 delta_y = -256; 733 sc->data_signal = 1; 734 } 735 if (delta_z > 255) { 736 delta_z = 255; 737 sc->data_signal = 1; 738 } 739 if (delta_z < -256) { 740 delta_z = -256; 741 sc->data_signal = 1; 742 } 743 but = sc->track_but; 744 745 /* Adjust baseline for next calculation */ 746 sc->delta_x -= delta_x; 747 sc->delta_y -= delta_y; 748 sc->delta_z -= delta_z; 749 sc->reported_but = but; 750 751 /* 752 * Fuzz reduces movement jitter by introducing some 753 * hysteresis. It operates without cumulative error so 754 * if you swish around quickly and return your finger to 755 * where it started, so to will the mouse. 756 */ 757 delta_x = cyapa_fuzz(delta_x, &sc->fuzz_x); 758 delta_y = cyapa_fuzz(delta_y, &sc->fuzz_y); 759 delta_z = cyapa_fuzz(delta_z, &sc->fuzz_z); 760 761 /* 762 * Generate report 763 */ 764 c0 = 0; 765 if (delta_x < 0) 766 c0 |= 0x10; 767 if (delta_y < 0) 768 c0 |= 0x20; 769 c0 |= 0x08; 770 if (but & CYAPA_FNGR_LEFT) 771 c0 |= 0x01; 772 if (but & CYAPA_FNGR_MIDDLE) 773 c0 |= 0x04; 774 if (but & CYAPA_FNGR_RIGHT) 775 c0 |= 0x02; 776 777 fifo_write_char(sc, &sc->rfifo, c0); 778 fifo_write_char(sc, &sc->rfifo, (uint8_t)delta_x); 779 fifo_write_char(sc, &sc->rfifo, (uint8_t)delta_y); 780 switch(sc->zenabled) { 781 case 1: 782 /* Z axis all 8 bits */ 783 fifo_write_char(sc, &sc->rfifo, (uint8_t)delta_z); 784 break; 785 case 2: 786 /* 787 * Z axis low 4 bits + 4th button and 5th button 788 * (high 2 bits must be left 0). Auto-scale 789 * delta_z to fit to avoid a wrong-direction 790 * overflow (don't try to retain the remainder). 791 */ 792 while (delta_z > 7 || delta_z < -8) 793 delta_z >>= 1; 794 c0 = (uint8_t)delta_z & 0x0F; 795 fifo_write_char(sc, &sc->rfifo, c0); 796 break; 797 default: 798 /* basic PS/2 */ 799 break; 800 } 801 cyapa_notify(sc); 802 } 803 804 /* Blocking / Non-blocking */ 805 error = 0; 806 didread = (uio->uio_resid == 0); 807 808 while ((ioflag & IO_NDELAY) == 0 && fifo_empty(sc, &sc->rfifo)) { 809 if (sc->data_signal) 810 goto again; 811 sc->blocked = 1; 812 error = mtx_sleep(&sc->blocked, &sc->mutex, PCATCH, "cyablk", 0); 813 if (error) 814 break; 815 } 816 817 /* Return any buffered data */ 818 while (error == 0 && uio->uio_resid && 819 (n = fifo_ready(sc, &sc->rfifo)) > 0) { 820 if (n > uio->uio_resid) 821 n = uio->uio_resid; 822 ptr = fifo_read(sc, &sc->rfifo, 0); 823 cyapa_unlock(sc); 824 error = uiomove(ptr, n, uio); 825 cyapa_lock(sc); 826 if (error) 827 break; 828 fifo_read(sc, &sc->rfifo, n); 829 didread = 1; 830 } 831 cyapa_unlock(sc); 832 833 if (error == 0 && didread == 0) { 834 error = EWOULDBLOCK; 835 } 836 return (didread ? 0 : error); 837} 838 839static int 840cyapawrite(struct cdev *dev, struct uio *uio, int ioflag) 841{ 842 struct cyapa_softc *sc; 843 int error; 844 int cmd_completed; 845 size_t n; 846 uint8_t c0; 847 char* ptr; 848 849 sc = dev->si_drv1; 850again: 851 /* 852 * Copy data from userland. This will also cross-over the end 853 * of the fifo and keep filling. 854 */ 855 cyapa_lock(sc); 856 while ((n = fifo_space(sc, &sc->wfifo)) > 0 && uio->uio_resid) { 857 if (n > uio->uio_resid) 858 n = uio->uio_resid; 859 ptr = fifo_write(sc, &sc->wfifo, 0); 860 cyapa_unlock(sc); 861 error = uiomove(ptr, n, uio); 862 cyapa_lock(sc); 863 if (error) 864 break; 865 fifo_write(sc, &sc->wfifo, n); 866 } 867 868 /* Handle commands */ 869 cmd_completed = (fifo_ready(sc, &sc->wfifo) != 0); 870 while (fifo_ready(sc, &sc->wfifo) && cmd_completed && error == 0) { 871 if (sc->ps2_cmd == 0) 872 sc->ps2_cmd = fifo_read_char(sc, &sc->wfifo); 873 switch(sc->ps2_cmd) { 874 case 0xE6: 875 /* SET SCALING 1:1 */ 876 sc->scaling_mode = 0; 877 fifo_write_char(sc, &sc->rfifo, 0xFA); 878 break; 879 case 0xE7: 880 /* SET SCALING 2:1 */ 881 sc->scaling_mode = 1; 882 fifo_write_char(sc, &sc->rfifo, 0xFA); 883 break; 884 case 0xE8: 885 /* SET RESOLUTION +1 byte */ 886 if (sc->ps2_acked == 0) { 887 sc->ps2_acked = 1; 888 fifo_write_char(sc, &sc->rfifo, 0xFA); 889 } 890 if (fifo_ready(sc, &sc->wfifo) == 0) { 891 cmd_completed = 0; 892 break; 893 } 894 sc->mode.resolution = fifo_read_char(sc, &sc->wfifo); 895 fifo_write_char(sc, &sc->rfifo, 0xFA); 896 break; 897 case 0xE9: 898 /* 899 * STATUS REQUEST 900 * 901 * byte1: 902 * bit 7 0 903 * bit 6 Mode (1=remote mode, 0=stream mode) 904 * bit 5 Enable (data reporting enabled) 905 * bit 4 Scaling (0=1:1 1=2:1) 906 * bit 3 0 907 * bit 2 LEFT BUTTON (1 if pressed) 908 * bit 1 MIDDLE BUTTON (1 if pressed) 909 * bit 0 RIGHT BUTTON (1 if pressed) 910 * 911 * byte2: resolution counts/mm 912 * byte3: sample rate 913 */ 914 c0 = 0; 915 if (sc->remote_mode) 916 c0 |= 0x40; 917 if (sc->reporting_mode) 918 c0 |= 0x20; 919 if (sc->scaling_mode) 920 c0 |= 0x10; 921 if (sc->track_but & CYAPA_FNGR_LEFT) 922 c0 |= 0x04; 923 if (sc->track_but & CYAPA_FNGR_MIDDLE) 924 c0 |= 0x02; 925 if (sc->track_but & CYAPA_FNGR_RIGHT) 926 c0 |= 0x01; 927 fifo_write_char(sc, &sc->rfifo, 0xFA); 928 fifo_write_char(sc, &sc->rfifo, c0); 929 fifo_write_char(sc, &sc->rfifo, 0x00); 930 fifo_write_char(sc, &sc->rfifo, 100); 931 break; 932 case 0xEA: 933 /* Set stream mode and reset movement counters */ 934 sc->remote_mode = 0; 935 fifo_write_char(sc, &sc->rfifo, 0xFA); 936 sc->delta_x = 0; 937 sc->delta_y = 0; 938 sc->delta_z = 0; 939 break; 940 case 0xEB: 941 /* 942 * Read Data (if in remote mode). If not in remote 943 * mode force an event. 944 */ 945 fifo_write_char(sc, &sc->rfifo, 0xFA); 946 sc->data_signal = 1; 947 break; 948 case 0xEC: 949 /* Reset Wrap Mode (ignored) */ 950 fifo_write_char(sc, &sc->rfifo, 0xFA); 951 break; 952 case 0xEE: 953 /* Set Wrap Mode (ignored) */ 954 fifo_write_char(sc, &sc->rfifo, 0xFA); 955 break; 956 case 0xF0: 957 /* Set Remote Mode */ 958 sc->remote_mode = 1; 959 fifo_write_char(sc, &sc->rfifo, 0xFA); 960 sc->delta_x = 0; 961 sc->delta_y = 0; 962 sc->delta_z = 0; 963 break; 964 case 0xF2: 965 /* 966 * Get Device ID 967 * 968 * If we send 0x00 - normal PS/2 mouse, no Z-axis 969 * 970 * If we send 0x03 - Intellimouse, data packet has 971 * an additional Z movement byte (8 bits signed). 972 * (also reset movement counters) 973 * 974 * If we send 0x04 - Now includes z-axis and the 975 * 4th and 5th mouse buttons. 976 */ 977 fifo_write_char(sc, &sc->rfifo, 0xFA); 978 switch(sc->zenabled) { 979 case 1: 980 fifo_write_char(sc, &sc->rfifo, 0x03); 981 break; 982 case 2: 983 fifo_write_char(sc, &sc->rfifo, 0x04); 984 break; 985 default: 986 fifo_write_char(sc, &sc->rfifo, 0x00); 987 break; 988 } 989 sc->delta_x = 0; 990 sc->delta_y = 0; 991 sc->delta_z = 0; 992 break; 993 case 0xF3: 994 /* 995 * Set Sample Rate 996 * 997 * byte1: the sample rate 998 */ 999 if (sc->ps2_acked == 0) { 1000 sc->ps2_acked = 1; 1001 fifo_write_char(sc, &sc->rfifo, 0xFA); 1002 } 1003 if (fifo_ready(sc, &sc->wfifo) == 0) { 1004 cmd_completed = 0; 1005 break; 1006 } 1007 sc->mode.rate = fifo_read_char(sc, &sc->wfifo); 1008 fifo_write_char(sc, &sc->rfifo, 0xFA); 1009 1010 /* 1011 * zenabling sequence: 200,100,80 (device id 0x03) 1012 * 200,200,80 (device id 0x04) 1013 * 1014 * We support id 0x03 (no 4th or 5th button). 1015 * We support id 0x04 (w/ 4th and 5th button). 1016 */ 1017 if (sc->zenabled == 0 && sc->mode.rate == 200) 1018 sc->zenabled = -1; 1019 else if (sc->zenabled == -1 && sc->mode.rate == 100) 1020 sc->zenabled = -2; 1021 else if (sc->zenabled == -1 && sc->mode.rate == 200) 1022 sc->zenabled = -3; 1023 else if (sc->zenabled == -2 && sc->mode.rate == 80) 1024 sc->zenabled = 1; /* z-axis mode */ 1025 else if (sc->zenabled == -3 && sc->mode.rate == 80) 1026 sc->zenabled = 2; /* z-axis+but4/5 */ 1027 if (sc->mode.level) 1028 sc->zenabled = 1; 1029 break; 1030 case 0xF4: 1031 /* Enable data reporting. Only effects stream mode. */ 1032 fifo_write_char(sc, &sc->rfifo, 0xFA); 1033 sc->reporting_mode = 1; 1034 break; 1035 case 0xF5: 1036 /* 1037 * Disable data reporting. Only effects stream mode 1038 * and is ignored right now. 1039 */ 1040 fifo_write_char(sc, &sc->rfifo, 0xFA); 1041 sc->reporting_mode = 1; 1042 break; 1043 case 0xF6: 1044 /* 1045 * SET DEFAULTS 1046 * 1047 * (reset sampling rate, resolution, scaling and 1048 * enter stream mode) 1049 */ 1050 fifo_write_char(sc, &sc->rfifo, 0xFA); 1051 sc->mode.rate = 100; 1052 sc->mode.resolution = 4; 1053 sc->scaling_mode = 0; 1054 sc->reporting_mode = 1; 1055 sc->remote_mode = 0; 1056 sc->delta_x = 0; 1057 sc->delta_y = 0; 1058 sc->delta_z = 0; 1059 /* signal */ 1060 break; 1061 case 0xFE: 1062 /* 1063 * RESEND 1064 * 1065 * Force a resend by guaranteeing that reported_but 1066 * differs from track_but. 1067 */ 1068 fifo_write_char(sc, &sc->rfifo, 0xFA); 1069 sc->data_signal = 1; 1070 break; 1071 case 0xFF: 1072 /* 1073 * RESET 1074 */ 1075 fifo_reset(sc, &sc->rfifo); /* should we do this? */ 1076 fifo_reset(sc, &sc->wfifo); /* should we do this? */ 1077 fifo_write_char(sc, &sc->rfifo, 0xFA); 1078 sc->delta_x = 0; 1079 sc->delta_y = 0; 1080 sc->delta_z = 0; 1081 sc->zenabled = 0; 1082 sc->mode.level = 0; 1083 break; 1084 default: 1085 printf("unknown command %02x\n", sc->ps2_cmd); 1086 break; 1087 } 1088 if (cmd_completed) { 1089 sc->ps2_cmd = 0; 1090 sc->ps2_acked = 0; 1091 } 1092 cyapa_notify(sc); 1093 } 1094 cyapa_unlock(sc); 1095 if (error == 0 && (cmd_completed || uio->uio_resid)) 1096 goto again; 1097 return (error); 1098} 1099 1100static void cyapafiltdetach(struct knote *); 1101static int cyapafilt(struct knote *, long); 1102 1103static struct filterops cyapa_filtops = { 1104 .f_isfd = 1, 1105 .f_detach = cyapafiltdetach, 1106 .f_event = cyapafilt 1107}; 1108 1109static int 1110cyapakqfilter(struct cdev *dev, struct knote *kn) 1111{ 1112 struct cyapa_softc *sc; 1113 struct knlist *knlist; 1114 1115 sc = dev->si_drv1; 1116 1117 switch(kn->kn_filter) { 1118 case EVFILT_READ: 1119 kn->kn_fop = &cyapa_filtops; 1120 kn->kn_hook = (void *)sc; 1121 break; 1122 default: 1123 return (EOPNOTSUPP); 1124 } 1125 knlist = &sc->selinfo.si_note; 1126 knlist_add(knlist, kn, 0); 1127 1128 return (0); 1129} 1130 1131static int 1132cyapapoll(struct cdev *dev, int events, struct thread *td) 1133{ 1134 struct cyapa_softc *sc; 1135 int revents; 1136 1137 sc = dev->si_drv1; 1138 revents = 0; 1139 1140 cyapa_lock(sc); 1141 if (events & (POLLIN | POLLRDNORM)) { 1142 if (sc->data_signal || !fifo_empty(sc, &sc->rfifo)) 1143 revents = events & (POLLIN | POLLRDNORM); 1144 else { 1145 sc->isselect = 1; 1146 selrecord(td, &sc->selinfo); 1147 } 1148 } 1149 cyapa_unlock(sc); 1150 1151 return (revents); 1152} 1153 1154static void 1155cyapafiltdetach(struct knote *kn) 1156{ 1157 struct cyapa_softc *sc; 1158 struct knlist *knlist; 1159 1160 sc = (struct cyapa_softc *)kn->kn_hook; 1161 1162 knlist = &sc->selinfo.si_note; 1163 knlist_remove(knlist, kn, 0); 1164} 1165 1166static int 1167cyapafilt(struct knote *kn, long hint) 1168{ 1169 struct cyapa_softc *sc; 1170 int ready; 1171 1172 sc = (struct cyapa_softc *)kn->kn_hook; 1173 1174 cyapa_lock(sc); 1175 ready = fifo_ready(sc, &sc->rfifo) || sc->data_signal; 1176 cyapa_unlock(sc); 1177 1178 return (ready); 1179} 1180 1181static int 1182cyapaioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td) 1183{ 1184 struct cyapa_softc *sc; 1185 int error; 1186 1187 sc = dev->si_drv1; 1188 error = 0; 1189 1190 cyapa_lock(sc); 1191 switch (cmd) { 1192 case MOUSE_GETHWINFO: 1193 *(mousehw_t *)data = sc->hw; 1194 if (sc->mode.level == 0) 1195 ((mousehw_t *)data)->model = MOUSE_MODEL_GENERIC; 1196 break; 1197 1198 case MOUSE_GETMODE: 1199 *(mousemode_t *)data = sc->mode; 1200 ((mousemode_t *)data)->resolution = 1201 MOUSE_RES_LOW - sc->mode.resolution; 1202 switch (sc->mode.level) { 1203 case 0: 1204 ((mousemode_t *)data)->protocol = MOUSE_PROTO_PS2; 1205 ((mousemode_t *)data)->packetsize = 1206 MOUSE_PS2_PACKETSIZE; 1207 break; 1208 case 2: 1209 ((mousemode_t *)data)->protocol = MOUSE_PROTO_PS2; 1210 ((mousemode_t *)data)->packetsize = 1211 MOUSE_PS2_PACKETSIZE + 1; 1212 break; 1213 } 1214 break; 1215 1216 case MOUSE_GETLEVEL: 1217 *(int *)data = sc->mode.level; 1218 break; 1219 1220 case MOUSE_SETLEVEL: 1221 if ((*(int *)data < 0) && 1222 (*(int *)data > 2)) { 1223 error = EINVAL; 1224 break; 1225 } 1226 sc->mode.level = *(int *)data ? 2 : 0; 1227 sc->zenabled = sc->mode.level ? 1 : 0; 1228 break; 1229 1230 default: 1231 error = ENOTTY; 1232 break; 1233 } 1234 cyapa_unlock(sc); 1235 1236 return (error); 1237} 1238 1239/* 1240 * MAJOR SUPPORT FUNCTIONS 1241 */ 1242static void 1243cyapa_poll_thread(void *arg) 1244{ 1245 struct cyapa_softc *sc; 1246 struct cyapa_regs regs; 1247 device_t bus; /* iicbus */ 1248 int error; 1249 int freq; 1250 int isidle; 1251 int pstate; 1252 int npstate; 1253 int last_reset; 1254 1255 sc = arg; 1256 freq = cyapa_norm_freq; 1257 isidle = 0; 1258 pstate = CMD_POWER_MODE_IDLE; 1259 last_reset = ticks; 1260 1261 bus = device_get_parent(sc->dev); 1262 1263 cyapa_lock(sc); 1264 sc->poll_thread_running = 1; 1265 1266 while (!sc->detaching) { 1267 cyapa_unlock(sc); 1268 error = iicbus_request_bus(bus, sc->dev, IIC_WAIT); 1269 if (error == 0) { 1270 error = cyapa_read_bytes(sc->dev, CMD_DEV_STATUS, 1271 (void *)®s, sizeof(regs)); 1272 if (error == 0) { 1273 isidle = cyapa_raw_input(sc, ®s, freq); 1274 } 1275 1276 /* 1277 * For some reason the device can crap-out. If it 1278 * drops back into bootstrap mode try to reinitialize 1279 * it. 1280 */ 1281 if (cyapa_reset || 1282 ((regs.stat & CYAPA_STAT_RUNNING) == 0 && 1283 (unsigned)(ticks - last_reset) > TIME_TO_RESET)) { 1284 cyapa_reset = 0; 1285 last_reset = ticks; 1286 init_device(sc->dev, NULL, 2); 1287 } 1288 iicbus_release_bus(bus, sc->dev); 1289 } 1290 pause("cyapw", hz / freq); 1291 ++sc->poll_ticks; 1292 1293 if (sc->count == 0) { 1294 freq = cyapa_idle_freq; 1295 npstate = CMD_POWER_MODE_IDLE; 1296 } else if (isidle) { 1297 freq = cyapa_slow_freq; 1298 npstate = CMD_POWER_MODE_IDLE; 1299 } else { 1300 freq = cyapa_norm_freq; 1301 npstate = CMD_POWER_MODE_FULL; 1302 } 1303 if (pstate != npstate) { 1304 pstate = npstate; 1305 cyapa_set_power_mode(sc, pstate); 1306 if (cyapa_debug) { 1307 switch(pstate) { 1308 case CMD_POWER_MODE_OFF: 1309 printf("cyapa: power off\n"); 1310 break; 1311 case CMD_POWER_MODE_IDLE: 1312 printf("cyapa: power idle\n"); 1313 break; 1314 case CMD_POWER_MODE_FULL: 1315 printf("cyapa: power full\n"); 1316 break; 1317 } 1318 } 1319 } 1320 1321 cyapa_lock(sc); 1322 } 1323 sc->poll_thread_running = 0; 1324 cyapa_unlock(sc); 1325 kthread_exit(); 1326} 1327 1328static int 1329cyapa_raw_input(struct cyapa_softc *sc, struct cyapa_regs *regs, int freq) 1330{ 1331 int nfingers; 1332 int afingers; /* actual fingers after culling */ 1333 int i; 1334 int j; 1335 int isidle; 1336 int thumbarea_begin; 1337 int seen_thumb; 1338 int x; 1339 int y; 1340 int z; 1341 int newfinger; 1342 int lessfingers; 1343 int click_x; 1344 int click_y; 1345 uint16_t but; /* high bits used for simulated but4/but5 */ 1346 1347 thumbarea_begin = sc->cap_resy - 1348 ((sc->cap_resy * cyapa_thumbarea_percent) / 100); 1349 click_x = click_y = 0; 1350 1351 /* 1352 * If the device is not running the rest of the status 1353 * means something else, set fingers to 0. 1354 */ 1355 if ((regs->stat & CYAPA_STAT_RUNNING) == 0) { 1356 regs->fngr = 0; 1357 } 1358 1359 /* Process fingers/movement */ 1360 nfingers = CYAPA_FNGR_NUMFINGERS(regs->fngr); 1361 afingers = nfingers; 1362 1363 if (cyapa_debug) { 1364 printf("stat %02x buttons %c%c%c nfngrs=%d ", 1365 regs->stat, 1366 ((regs->fngr & CYAPA_FNGR_LEFT) ? 'L' : '-'), 1367 ((regs->fngr & CYAPA_FNGR_MIDDLE) ? 'M' : '-'), 1368 ((regs->fngr & CYAPA_FNGR_RIGHT) ? 'R' : '-'), 1369 nfingers); 1370 } 1371 1372#ifdef EVDEV_SUPPORT 1373 if (evdev_rcpt_mask & EVDEV_RCPT_HW_MOUSE) { 1374 for (i = 0; i < nfingers; ++i) { 1375 int slot = evdev_mt_id_to_slot( 1376 sc->evdev, regs->touch[i].id); 1377 if (slot == -1) { 1378 if (cyapa_debug) 1379 printf("Slot overflow for i=%d\n", 1380 regs->touch[i].id); 1381 continue; 1382 } 1383 evdev_push_abs(sc->evdev, ABS_MT_SLOT, slot); 1384 evdev_push_abs(sc->evdev, ABS_MT_TRACKING_ID, 1385 regs->touch[i].id); 1386 evdev_push_abs(sc->evdev, ABS_MT_POSITION_X, 1387 CYAPA_TOUCH_X(regs, i)); 1388 evdev_push_abs(sc->evdev, ABS_MT_POSITION_Y, 1389 CYAPA_TOUCH_Y(regs, i)); 1390 evdev_push_abs(sc->evdev, ABS_MT_PRESSURE, 1391 CYAPA_TOUCH_P(regs, i)); 1392 } 1393 if (sc->cap_buttons & CYAPA_FNGR_LEFT) 1394 evdev_push_key(sc->evdev, BTN_LEFT, 1395 regs->fngr & CYAPA_FNGR_LEFT); 1396 if (sc->cap_buttons & CYAPA_FNGR_RIGHT) 1397 evdev_push_key(sc->evdev, BTN_RIGHT, 1398 regs->fngr & CYAPA_FNGR_RIGHT); 1399 if (sc->cap_buttons & CYAPA_FNGR_MIDDLE) 1400 evdev_push_key(sc->evdev, BTN_MIDDLE, 1401 regs->fngr & CYAPA_FNGR_MIDDLE); 1402 evdev_sync(sc->evdev); 1403 } 1404#endif 1405 1406 seen_thumb = 0; 1407 for (i = 0; i < afingers; ) { 1408 if (cyapa_debug) { 1409 printf(" [x=%04d y=%04d p=%d i=%d]", 1410 CYAPA_TOUCH_X(regs, i), 1411 CYAPA_TOUCH_Y(regs, i), 1412 CYAPA_TOUCH_P(regs, i), 1413 regs->touch[i].id); 1414 } 1415 if ((CYAPA_TOUCH_Y(regs, i) > thumbarea_begin && seen_thumb) || 1416 CYAPA_TOUCH_P(regs, i) < cyapa_minpressure) { 1417 --afingers; 1418 if (i < afingers) { 1419 regs->touch[i] = regs->touch[i+1]; 1420 continue; 1421 } 1422 } else { 1423 if (CYAPA_TOUCH_Y(regs, i) > thumbarea_begin) 1424 seen_thumb = 1; 1425 } 1426 ++i; 1427 } 1428 nfingers = afingers; 1429 1430 /* Tracking for local solutions */ 1431 cyapa_lock(sc); 1432 1433 /* 1434 * Track timing for finger-downs. Used to detect false-3-finger 1435 * button-down. 1436 */ 1437 switch(afingers) { 1438 case 0: 1439 break; 1440 case 1: 1441 if (sc->track_nfingers == 0) 1442 sc->finger1_ticks = sc->poll_ticks; 1443 break; 1444 case 2: 1445 if (sc->track_nfingers <= 0) 1446 sc->finger1_ticks = sc->poll_ticks; 1447 if (sc->track_nfingers <= 1) 1448 sc->finger2_ticks = sc->poll_ticks; 1449 break; 1450 case 3: 1451 default: 1452 if (sc->track_nfingers <= 0) 1453 sc->finger1_ticks = sc->poll_ticks; 1454 if (sc->track_nfingers <= 1) 1455 sc->finger2_ticks = sc->poll_ticks; 1456 if (sc->track_nfingers <= 2) 1457 sc->finger3_ticks = sc->poll_ticks; 1458 break; 1459 } 1460 newfinger = sc->track_nfingers < afingers; 1461 lessfingers = sc->track_nfingers > afingers; 1462 sc->track_nfingers = afingers; 1463 1464 /* 1465 * Lookup and track finger indexes in the touch[] array. 1466 */ 1467 if (afingers == 0) { 1468 click_x = sc->track_x; 1469 click_y = sc->track_y; 1470 sc->track_x = -1; 1471 sc->track_y = -1; 1472 sc->track_z = -1; 1473 sc->fuzz_x = 0; 1474 sc->fuzz_y = 0; 1475 sc->fuzz_z = 0; 1476 sc->touch_x = -1; 1477 sc->touch_y = -1; 1478 sc->touch_z = -1; 1479 sc->track_id = -1; 1480 sc->track_but = 0; 1481 i = 0; 1482 j = 0; 1483 } else { 1484 /* 1485 * The id assigned on touch can move around in the array, 1486 * find it. If that finger is lifted up, assign some other 1487 * finger for mouse tracking and reset track_x and track_y 1488 * to avoid a mouse jump. 1489 * 1490 * If >= 2 fingers are down be sure not to assign i and 1491 * j to the same index. 1492 */ 1493 for (i = 0; i < nfingers; ++i) { 1494 if (sc->track_id == regs->touch[i].id) 1495 break; 1496 } 1497 if (i == nfingers) { 1498 i = 0; 1499 sc->track_x = -1; 1500 sc->track_y = -1; 1501 sc->track_z = -1; 1502 while (CYAPA_TOUCH_Y(regs, i) >= thumbarea_begin && 1503 i < nfingers) ++i; 1504 if (i == nfingers) { 1505 i = 0; 1506 } 1507 sc->track_id = regs->touch[i].id; 1508 } 1509 else if ((sc->track_but || 1510 CYAPA_TOUCH_Y(regs, i) >= thumbarea_begin) && 1511 newfinger && afingers == 2) { 1512 j = regs->touch[0].id == sc->track_id ? 1 : 0; 1513 if (CYAPA_TOUCH_Y(regs, j) < thumbarea_begin) { 1514 i = j; 1515 sc->track_x = -1; 1516 sc->track_y = -1; 1517 sc->track_z = -1; 1518 sc->track_id = regs->touch[i].id; 1519 } 1520 } 1521 } 1522 1523 /* Two finger scrolling - reset after timeout */ 1524 if (sc->track_z != -1 && afingers != 2 && 1525 (sc->poll_ticks - sc->track_z_ticks) > cyapa_scroll_stick_ticks) { 1526 sc->track_z = -1; 1527 sc->track_z_ticks = 0; 1528 } 1529 1530 /* Initiate two finger scrolling */ 1531 if (!(regs->fngr & CYAPA_FNGR_LEFT) && 1532 ((afingers && sc->track_z != -1) || 1533 (afingers == 2 && CYAPA_TOUCH_Y(regs, 0) < thumbarea_begin && 1534 CYAPA_TOUCH_Y(regs, 1) < thumbarea_begin))) { 1535 if (afingers == 2 && (sc->poll_ticks - sc->finger2_ticks) 1536 > cyapa_scroll_wait_ticks) { 1537 z = (CYAPA_TOUCH_Y(regs, 0) + 1538 CYAPA_TOUCH_Y(regs, 1)) >> 1; 1539 sc->delta_z += z / ZSCALE - sc->track_z; 1540 if (sc->track_z == -1) { 1541 sc->delta_z = 0; 1542 } 1543 if (sc->touch_z == -1) 1544 sc->touch_z = z; /* not used atm */ 1545 sc->track_z = z / ZSCALE; 1546 sc->track_z_ticks = sc->poll_ticks; 1547 } 1548 } else if (afingers) { 1549 /* Normal pad position reporting */ 1550 x = CYAPA_TOUCH_X(regs, i); 1551 y = CYAPA_TOUCH_Y(regs, i); 1552 click_x = x; 1553 click_y = y; 1554 if (sc->track_x != -1 && sc->track_y < thumbarea_begin && 1555 (afingers > 1 || (sc->poll_ticks - sc->finger1_ticks) 1556 >= cyapa_move_min_ticks || freq < cyapa_norm_freq)) { 1557 sc->delta_x += x - sc->track_x; 1558 sc->delta_y -= y - sc->track_y; 1559 if (sc->delta_x > sc->cap_resx) 1560 sc->delta_x = sc->cap_resx; 1561 if (sc->delta_x < -sc->cap_resx) 1562 sc->delta_x = -sc->cap_resx; 1563 if (sc->delta_y > sc->cap_resy) 1564 sc->delta_y = sc->cap_resy; 1565 if (sc->delta_y < -sc->cap_resy) 1566 sc->delta_y = -sc->cap_resy; 1567 1568 if (abs(sc->delta_y) > sc->cap_resy / 2 || 1569 abs(sc->delta_x) > sc->cap_resx / 2) { 1570 if (cyapa_debug) 1571 printf("Detected jump by %i %i\n", 1572 sc->delta_x, sc->delta_y); 1573 sc->delta_x = sc->delta_y = 0; 1574 } 1575 } 1576 if (sc->touch_x == -1) { 1577 sc->touch_x = x; 1578 sc->touch_y = y; 1579 } 1580 sc->track_x = x; 1581 sc->track_y = y; 1582 } 1583 1584 /* Select finger (L = 2/3x, M = 1/3u, R = 1/3d) */ 1585 int is_tapclick = (cyapa_enable_tapclick && lessfingers && 1586 afingers == 0 && sc->poll_ticks - sc->finger1_ticks 1587 >= cyapa_tapclick_min_ticks && 1588 sc->poll_ticks - sc->finger1_ticks < cyapa_tapclick_max_ticks); 1589 1590 if (regs->fngr & CYAPA_FNGR_LEFT || is_tapclick) { 1591 if (sc->track_but) { 1592 but = sc->track_but; 1593 } else if (afingers == 1) { 1594 if (click_x < sc->cap_resx * 2 / 3) 1595 but = CYAPA_FNGR_LEFT; 1596 else if (click_y < sc->cap_resy / 2) 1597 but = CYAPA_FNGR_MIDDLE; 1598 else 1599 but = CYAPA_FNGR_RIGHT; 1600 } else if (is_tapclick) { 1601 if (click_x < sc->cap_resx * 2 / 3 || 1602 cyapa_enable_tapclick < 2) 1603 but = CYAPA_FNGR_LEFT; 1604 else if (click_y < sc->cap_resy / 2 && 1605 cyapa_enable_tapclick > 2) 1606 but = CYAPA_FNGR_MIDDLE; 1607 else 1608 but = CYAPA_FNGR_RIGHT; 1609 } else { 1610 but = CYAPA_FNGR_LEFT; 1611 } 1612 } else { 1613 but = 0; 1614 } 1615 1616 /* 1617 * Detect state change from last reported state and 1618 * determine if we have gone idle. 1619 */ 1620 sc->track_but = but; 1621 if (sc->delta_x || sc->delta_y || sc->delta_z || 1622 sc->track_but != sc->reported_but) { 1623 sc->active_tick = ticks; 1624 if (sc->remote_mode == 0 && sc->reporting_mode) 1625 sc->data_signal = 1; 1626 isidle = 0; 1627 } else if ((unsigned)(ticks - sc->active_tick) >= TIME_TO_IDLE) { 1628 sc->active_tick = ticks - TIME_TO_IDLE; /* prevent overflow */ 1629 isidle = 1; 1630 } else { 1631 isidle = 0; 1632 } 1633 cyapa_notify(sc); 1634 cyapa_unlock(sc); 1635 1636 if (cyapa_debug) 1637 printf("%i >> %i << %i\n", isidle, sc->track_id, sc->delta_y); 1638 return (isidle); 1639} 1640 1641static void 1642cyapa_set_power_mode(struct cyapa_softc *sc, int mode) 1643{ 1644 uint8_t data; 1645 device_t bus; 1646 int error; 1647 1648 bus = device_get_parent(sc->dev); 1649 error = iicbus_request_bus(bus, sc->dev, IIC_WAIT); 1650 if (error == 0) { 1651 error = cyapa_read_bytes(sc->dev, CMD_POWER_MODE, 1652 &data, 1); 1653 data = (data & ~0xFC) | mode; 1654 if (error == 0) { 1655 error = cyapa_write_bytes(sc->dev, CMD_POWER_MODE, 1656 &data, 1); 1657 } 1658 iicbus_release_bus(bus, sc->dev); 1659 } 1660} 1661 1662/* 1663 * FIFO FUNCTIONS 1664 */ 1665 1666/* 1667 * Returns non-zero if the fifo is empty 1668 */ 1669static int 1670fifo_empty(struct cyapa_softc *sc, struct cyapa_fifo *fifo) 1671{ 1672 1673 CYAPA_LOCK_ASSERT(sc); 1674 1675 return (fifo->rindex == fifo->windex); 1676} 1677 1678/* 1679 * Returns the number of characters available for reading from 1680 * the fifo without wrapping the fifo buffer. 1681 */ 1682static size_t 1683fifo_ready(struct cyapa_softc *sc, struct cyapa_fifo *fifo) 1684{ 1685 size_t n; 1686 1687 CYAPA_LOCK_ASSERT(sc); 1688 1689 n = CYAPA_BUFSIZE - (fifo->rindex & CYAPA_BUFMASK); 1690 if (n > (size_t)(fifo->windex - fifo->rindex)) 1691 n = (size_t)(fifo->windex - fifo->rindex); 1692 return (n); 1693} 1694 1695/* 1696 * Returns a read pointer into the fifo and then bumps 1697 * rindex. The FIFO must have at least 'n' characters in 1698 * it. The value (n) can cause the index to wrap but users 1699 * of the buffer should never supply a value for (n) that wraps 1700 * the buffer. 1701 */ 1702static char * 1703fifo_read(struct cyapa_softc *sc, struct cyapa_fifo *fifo, size_t n) 1704{ 1705 char *ptr; 1706 1707 CYAPA_LOCK_ASSERT(sc); 1708 if (n > (CYAPA_BUFSIZE - (fifo->rindex & CYAPA_BUFMASK))) { 1709 printf("fifo_read: overflow\n"); 1710 return (fifo->buf); 1711 } 1712 ptr = fifo->buf + (fifo->rindex & CYAPA_BUFMASK); 1713 fifo->rindex += n; 1714 1715 return (ptr); 1716} 1717 1718static uint8_t 1719fifo_read_char(struct cyapa_softc *sc, struct cyapa_fifo *fifo) 1720{ 1721 uint8_t c; 1722 1723 CYAPA_LOCK_ASSERT(sc); 1724 1725 if (fifo->rindex == fifo->windex) { 1726 printf("fifo_read_char: overflow\n"); 1727 c = 0; 1728 } else { 1729 c = fifo->buf[fifo->rindex & CYAPA_BUFMASK]; 1730 ++fifo->rindex; 1731 } 1732 return (c); 1733} 1734 1735 1736/* 1737 * Write a character to the FIFO. The character will be discarded 1738 * if the FIFO is full. 1739 */ 1740static void 1741fifo_write_char(struct cyapa_softc *sc, struct cyapa_fifo *fifo, uint8_t c) 1742{ 1743 1744 CYAPA_LOCK_ASSERT(sc); 1745 1746 if (fifo->windex - fifo->rindex < CYAPA_BUFSIZE) { 1747 fifo->buf[fifo->windex & CYAPA_BUFMASK] = c; 1748 ++fifo->windex; 1749 } 1750} 1751 1752/* 1753 * Return the amount of space available for writing without wrapping 1754 * the fifo. 1755 */ 1756static size_t 1757fifo_space(struct cyapa_softc *sc, struct cyapa_fifo *fifo) 1758{ 1759 size_t n; 1760 1761 CYAPA_LOCK_ASSERT(sc); 1762 1763 n = CYAPA_BUFSIZE - (fifo->windex & CYAPA_BUFMASK); 1764 if (n > (size_t)(CYAPA_BUFSIZE - (fifo->windex - fifo->rindex))) 1765 n = (size_t)(CYAPA_BUFSIZE - (fifo->windex - fifo->rindex)); 1766 return (n); 1767} 1768 1769static char * 1770fifo_write(struct cyapa_softc *sc, struct cyapa_fifo *fifo, size_t n) 1771{ 1772 char *ptr; 1773 1774 CYAPA_LOCK_ASSERT(sc); 1775 1776 ptr = fifo->buf + (fifo->windex & CYAPA_BUFMASK); 1777 fifo->windex += n; 1778 1779 return (ptr); 1780} 1781 1782static void 1783fifo_reset(struct cyapa_softc *sc, struct cyapa_fifo *fifo) 1784{ 1785 1786 CYAPA_LOCK_ASSERT(sc); 1787 1788 fifo->rindex = 0; 1789 fifo->windex = 0; 1790} 1791 1792/* 1793 * Fuzz handling 1794 */ 1795static int 1796cyapa_fuzz(int delta, int *fuzzp) 1797{ 1798 int fuzz; 1799 1800 fuzz = *fuzzp; 1801 if (fuzz >= 0 && delta < 0) { 1802 ++delta; 1803 --fuzz; 1804 } else if (fuzz <= 0 && delta > 0) { 1805 --delta; 1806 ++fuzz; 1807 } 1808 *fuzzp = fuzz; 1809 1810 return (delta); 1811} 1812 1813DRIVER_MODULE(cyapa, iicbus, cyapa_driver, NULL, NULL); 1814MODULE_DEPEND(cyapa, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER); 1815#ifdef EVDEV_SUPPORT 1816MODULE_DEPEND(cyapa, evdev, 1, 1, 1); 1817#endif 1818MODULE_VERSION(cyapa, 1); 1819