| 1 | /* $NetBSD: pms.c,v 1.35 2011/09/09 14:29:47 jakllsch Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2004 Kentaro Kurahone. |
| 5 | * Copyright (c) 2004 Ales Krenek. |
| 6 | * Copyright (c) 1994 Charles M. Hannum. |
| 7 | * Copyright (c) 1992, 1993 Erik Forsberg. |
| 8 | * All rights reserved. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 19 | * NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 23 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 24 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include <sys/cdefs.h> |
| 29 | __KERNEL_RCSID(0, "$NetBSD: pms.c,v 1.35 2011/09/09 14:29:47 jakllsch Exp $" ); |
| 30 | |
| 31 | #include "opt_pms.h" |
| 32 | |
| 33 | #include <sys/param.h> |
| 34 | #include <sys/systm.h> |
| 35 | #include <sys/device.h> |
| 36 | #include <sys/ioctl.h> |
| 37 | #include <sys/kernel.h> |
| 38 | #include <sys/kthread.h> |
| 39 | |
| 40 | #include <sys/bus.h> |
| 41 | |
| 42 | #include <dev/pckbport/pckbportvar.h> |
| 43 | #ifdef PMS_SYNAPTICS_TOUCHPAD |
| 44 | #include <dev/pckbport/synapticsvar.h> |
| 45 | #endif |
| 46 | #ifdef PMS_ELANTECH_TOUCHPAD |
| 47 | #include <dev/pckbport/elantechvar.h> |
| 48 | #endif |
| 49 | |
| 50 | #include <dev/pckbport/pmsreg.h> |
| 51 | #include <dev/pckbport/pmsvar.h> |
| 52 | |
| 53 | |
| 54 | #include <dev/wscons/wsconsio.h> |
| 55 | #include <dev/wscons/wsmousevar.h> |
| 56 | |
| 57 | #ifdef PMSDEBUG |
| 58 | int pmsdebug = 1; |
| 59 | #define DPRINTF(x) if (pmsdebug) printf x |
| 60 | #else |
| 61 | #define DPRINTF(x) |
| 62 | #endif |
| 63 | |
| 64 | static const enum pms_type tries[] = { |
| 65 | PMS_SCROLL5, PMS_SCROLL3, PMS_STANDARD, PMS_UNKNOWN |
| 66 | }; |
| 67 | |
| 68 | static const struct pms_protocol pms_protocols[] = { |
| 69 | { { 0, 0, 0 }, 0, "unknown protocol" }, |
| 70 | { { 0, 0, 0 }, 0, "no scroll wheel (3 buttons)" }, |
| 71 | { { 200, 100, 80 }, 3, "scroll wheel (3 buttons)" }, |
| 72 | { { 200, 200, 80 }, 4, "scroll wheel (5 buttons)" }, |
| 73 | { { 0, 0, 0 }, 0, "synaptics" }, |
| 74 | { { 0, 0, 0 }, 0, "elantech" } |
| 75 | }; |
| 76 | |
| 77 | |
| 78 | static int pmsprobe(device_t, cfdata_t, void *); |
| 79 | static void pmsattach(device_t, device_t, void *); |
| 80 | static void pmsinput(void *, int); |
| 81 | |
| 82 | CFATTACH_DECL_NEW(pms, sizeof(struct pms_softc), |
| 83 | pmsprobe, pmsattach, NULL, NULL); |
| 84 | |
| 85 | static int pms_protocol(pckbport_tag_t, pckbport_slot_t); |
| 86 | static void do_enable(struct pms_softc *); |
| 87 | static void do_disable(struct pms_softc *); |
| 88 | static void pms_reset_thread(void*); |
| 89 | static int pms_enable(void *); |
| 90 | static int pms_ioctl(void *, u_long, void *, int, struct lwp *); |
| 91 | static void pms_disable(void *); |
| 92 | |
| 93 | static bool pms_suspend(device_t, const pmf_qual_t *); |
| 94 | static bool pms_resume(device_t, const pmf_qual_t *); |
| 95 | |
| 96 | static const struct wsmouse_accessops pms_accessops = { |
| 97 | pms_enable, |
| 98 | pms_ioctl, |
| 99 | pms_disable, |
| 100 | }; |
| 101 | |
| 102 | static int |
| 103 | pms_protocol(pckbport_tag_t tag, pckbport_slot_t slot) |
| 104 | { |
| 105 | u_char cmd[2], resp[1]; |
| 106 | int i, j, res; |
| 107 | const struct pms_protocol *p; |
| 108 | |
| 109 | for (j = 0; j < sizeof(tries) / sizeof(tries[0]); ++j) { |
| 110 | p = &pms_protocols[tries[j]]; |
| 111 | if (!p->rates[0]) |
| 112 | break; |
| 113 | cmd[0] = PMS_SET_SAMPLE; |
| 114 | for (i = 0; i < 3; i++) { |
| 115 | cmd[1] = p->rates[i]; |
| 116 | res = pckbport_enqueue_cmd(tag, slot, cmd, 2, 0, 1, 0); |
| 117 | if (res) |
| 118 | return PMS_STANDARD; |
| 119 | } |
| 120 | |
| 121 | cmd[0] = PMS_SEND_DEV_ID; |
| 122 | res = pckbport_enqueue_cmd(tag, slot, cmd, 1, 1, 1, resp); |
| 123 | if (res) |
| 124 | return PMS_UNKNOWN; |
| 125 | if (resp[0] == p->response) { |
| 126 | DPRINTF(("pms_protocol: found mouse protocol %d\n" , |
| 127 | tries[j])); |
| 128 | return tries[j]; |
| 129 | } |
| 130 | } |
| 131 | DPRINTF(("pms_protocol: standard PS/2 protocol (no scroll wheel)\n" )); |
| 132 | return PMS_STANDARD; |
| 133 | } |
| 134 | |
| 135 | int |
| 136 | pmsprobe(device_t parent, cfdata_t match, void *aux) |
| 137 | { |
| 138 | struct pckbport_attach_args *pa = aux; |
| 139 | u_char cmd[1], resp[2]; |
| 140 | int res; |
| 141 | |
| 142 | if (pa->pa_slot != PCKBPORT_AUX_SLOT) |
| 143 | return 0; |
| 144 | |
| 145 | /* Flush any garbage. */ |
| 146 | pckbport_flush(pa->pa_tag, pa->pa_slot); |
| 147 | |
| 148 | /* reset the device */ |
| 149 | cmd[0] = PMS_RESET; |
| 150 | res = pckbport_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1); |
| 151 | if (res) { |
| 152 | aprint_debug("pmsprobe: reset error %d\n" , res); |
| 153 | return 0; |
| 154 | } |
| 155 | if (resp[0] != PMS_RSTDONE) { |
| 156 | printf("pmsprobe: reset response 0x%x\n" , resp[0]); |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | /* get type number (0 = mouse) */ |
| 161 | if (resp[1] != 0) { |
| 162 | aprint_debug("pmsprobe: type 0x%x\n" , resp[1]); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | return 10; |
| 167 | } |
| 168 | |
| 169 | static void |
| 170 | pmsattach(device_t parent, device_t self, void *aux) |
| 171 | { |
| 172 | struct pms_softc *sc = device_private(self); |
| 173 | struct pckbport_attach_args *pa = aux; |
| 174 | struct wsmousedev_attach_args a; |
| 175 | u_char cmd[2], resp[2]; |
| 176 | int res; |
| 177 | |
| 178 | sc->sc_dev = self; |
| 179 | sc->sc_kbctag = pa->pa_tag; |
| 180 | sc->sc_kbcslot = pa->pa_slot; |
| 181 | |
| 182 | aprint_naive("\n" ); |
| 183 | aprint_normal("\n" ); |
| 184 | |
| 185 | /* Flush any garbage. */ |
| 186 | pckbport_flush(pa->pa_tag, pa->pa_slot); |
| 187 | |
| 188 | /* reset the device */ |
| 189 | cmd[0] = PMS_RESET; |
| 190 | res = pckbport_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1); |
| 191 | if (res || resp[0] != PMS_RSTDONE || resp[1] != 0) { |
| 192 | aprint_debug("pmsattach: reset error\n" ); |
| 193 | return; |
| 194 | } |
| 195 | sc->inputstate = 0; |
| 196 | sc->buttons = 0; |
| 197 | sc->protocol = PMS_UNKNOWN; |
| 198 | |
| 199 | #ifdef PMS_SYNAPTICS_TOUCHPAD |
| 200 | /* Probe for synaptics touchpad. */ |
| 201 | if (pms_synaptics_probe_init(sc) == 0) { |
| 202 | sc->protocol = PMS_SYNAPTICS; |
| 203 | } else |
| 204 | #endif |
| 205 | #ifdef PMS_ELANTECH_TOUCHPAD |
| 206 | if (pms_elantech_probe_init(sc) == 0) { |
| 207 | sc->protocol = PMS_ELANTECH; |
| 208 | } else |
| 209 | #endif |
| 210 | /* Install generic handler. */ |
| 211 | pckbport_set_inputhandler(sc->sc_kbctag, sc->sc_kbcslot, |
| 212 | pmsinput, sc, device_xname(sc->sc_dev)); |
| 213 | |
| 214 | a.accessops = &pms_accessops; |
| 215 | a.accesscookie = sc; |
| 216 | |
| 217 | /* |
| 218 | * Attach the wsmouse, saving a handle to it. |
| 219 | * Note that we don't need to check this pointer against NULL |
| 220 | * here or in pmsintr, because if this fails pms_enable() will |
| 221 | * never be called, so pmsinput() will never be called. |
| 222 | */ |
| 223 | sc->sc_wsmousedev = config_found_ia(self, "wsmousedev" , &a, wsmousedevprint); |
| 224 | |
| 225 | /* no interrupts until enabled */ |
| 226 | cmd[0] = PMS_DEV_DISABLE; |
| 227 | res = pckbport_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 0, NULL, 0); |
| 228 | if (res) |
| 229 | aprint_error("pmsattach: disable error\n" ); |
| 230 | pckbport_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0); |
| 231 | |
| 232 | kthread_create(PRI_NONE, 0, NULL, pms_reset_thread, sc, |
| 233 | &sc->sc_event_thread, "%s" , device_xname(sc->sc_dev)); |
| 234 | |
| 235 | if (!pmf_device_register(self, pms_suspend, pms_resume)) |
| 236 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 237 | } |
| 238 | |
| 239 | static void |
| 240 | do_enable(struct pms_softc *sc) |
| 241 | { |
| 242 | u_char cmd[2]; |
| 243 | int res; |
| 244 | |
| 245 | sc->inputstate = 0; |
| 246 | sc->buttons = 0; |
| 247 | |
| 248 | pckbport_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 1); |
| 249 | |
| 250 | #ifdef PMS_SYNAPTICS_TOUCHPAD |
| 251 | if (sc->protocol == PMS_SYNAPTICS) |
| 252 | pms_synaptics_enable(sc); |
| 253 | #endif |
| 254 | #ifdef PMS_ELANTECH_TOUCHPAD |
| 255 | if (sc->protocol == PMS_ELANTECH) |
| 256 | pms_elantech_enable(sc); |
| 257 | #endif |
| 258 | |
| 259 | cmd[0] = PMS_DEV_ENABLE; |
| 260 | res = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, |
| 261 | 1, 0, 1, 0); |
| 262 | if (res) |
| 263 | aprint_error("pms_enable: command error %d\n" , res); |
| 264 | |
| 265 | if (sc->protocol == PMS_UNKNOWN) |
| 266 | sc->protocol = pms_protocol(sc->sc_kbctag, sc->sc_kbcslot); |
| 267 | DPRINTF(("pms_enable: using %s protocol\n" , |
| 268 | pms_protocols[sc->protocol].name)); |
| 269 | #if 0 |
| 270 | { |
| 271 | u_char scmd[2]; |
| 272 | |
| 273 | scmd[0] = PMS_SET_RES; |
| 274 | scmd[1] = 3; /* 8 counts/mm */ |
| 275 | res = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd, |
| 276 | 2, 0, 1, 0); |
| 277 | if (res) |
| 278 | printf("pms_enable: setup error1 (%d)\n" , res); |
| 279 | |
| 280 | scmd[0] = PMS_SET_SCALE21; |
| 281 | res = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd, |
| 282 | 1, 0, 1, 0); |
| 283 | if (res) |
| 284 | printf("pms_enable: setup error2 (%d)\n" , res); |
| 285 | |
| 286 | scmd[0] = PMS_SET_SAMPLE; |
| 287 | scmd[1] = 100; /* 100 samples/sec */ |
| 288 | res = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd, |
| 289 | 2, 0, 1, 0); |
| 290 | if (res) |
| 291 | printf("pms_enable: setup error3 (%d)\n" , res); |
| 292 | } |
| 293 | #endif |
| 294 | } |
| 295 | |
| 296 | static void |
| 297 | do_disable(struct pms_softc *sc) |
| 298 | { |
| 299 | u_char cmd[1]; |
| 300 | int res; |
| 301 | |
| 302 | cmd[0] = PMS_DEV_DISABLE; |
| 303 | res = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, |
| 304 | 1, 0, 1, 0); |
| 305 | if (res) |
| 306 | aprint_error("pms_disable: command error\n" ); |
| 307 | |
| 308 | pckbport_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0); |
| 309 | } |
| 310 | |
| 311 | static int |
| 312 | pms_enable(void *v) |
| 313 | { |
| 314 | struct pms_softc *sc = v; |
| 315 | int s; |
| 316 | |
| 317 | if (sc->sc_enabled) |
| 318 | return EBUSY; |
| 319 | |
| 320 | do_enable(sc); |
| 321 | |
| 322 | s = spltty(); |
| 323 | sc->sc_enabled = 1; |
| 324 | splx(s); |
| 325 | |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | static void |
| 330 | pms_disable(void *v) |
| 331 | { |
| 332 | struct pms_softc *sc = v; |
| 333 | int s; |
| 334 | |
| 335 | do_disable(sc); |
| 336 | |
| 337 | s = spltty(); |
| 338 | sc->sc_enabled = 0; |
| 339 | splx(s); |
| 340 | } |
| 341 | |
| 342 | static bool |
| 343 | pms_suspend(device_t dv, const pmf_qual_t *qual) |
| 344 | { |
| 345 | struct pms_softc *sc = device_private(dv); |
| 346 | |
| 347 | if (sc->sc_enabled) |
| 348 | do_disable(sc); |
| 349 | |
| 350 | return true; |
| 351 | } |
| 352 | |
| 353 | static bool |
| 354 | pms_resume(device_t dv, const pmf_qual_t *qual) |
| 355 | { |
| 356 | struct pms_softc *sc = device_private(dv); |
| 357 | |
| 358 | #ifdef PMS_SYNAPTICS_TOUCHPAD |
| 359 | if (sc->protocol == PMS_SYNAPTICS) { |
| 360 | pms_synaptics_resume(sc); |
| 361 | if (sc->sc_enabled) { |
| 362 | do_enable(sc); |
| 363 | } |
| 364 | } else |
| 365 | #endif |
| 366 | #ifdef PMS_ELANTECH_TOUCHPAD |
| 367 | if (sc->protocol == PMS_ELANTECH) { |
| 368 | pms_elantech_resume(sc); |
| 369 | if (sc->sc_enabled) { |
| 370 | do_enable(sc); |
| 371 | } |
| 372 | } else |
| 373 | #endif |
| 374 | if (sc->sc_enabled) { |
| 375 | /* recheck protocol & init mouse */ |
| 376 | sc->protocol = PMS_UNKNOWN; |
| 377 | do_enable(sc); /* only if we were suspended */ |
| 378 | } |
| 379 | |
| 380 | return true; |
| 381 | } |
| 382 | |
| 383 | static int |
| 384 | pms_ioctl(void *v, u_long cmd, void *data, int flag, |
| 385 | struct lwp *l) |
| 386 | { |
| 387 | struct pms_softc *sc = v; |
| 388 | u_char kbcmd[2]; |
| 389 | int i; |
| 390 | |
| 391 | switch (cmd) { |
| 392 | case WSMOUSEIO_GTYPE: |
| 393 | *(u_int *)data = WSMOUSE_TYPE_PS2; |
| 394 | break; |
| 395 | |
| 396 | case WSMOUSEIO_SRES: |
| 397 | i = (*(u_int *)data - 12) / 25; |
| 398 | |
| 399 | if (i < 0) |
| 400 | i = 0; |
| 401 | |
| 402 | if (i > 3) |
| 403 | i = 3; |
| 404 | |
| 405 | kbcmd[0] = PMS_SET_RES; |
| 406 | kbcmd[1] = i; |
| 407 | i = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, kbcmd, |
| 408 | 2, 0, 1, 0); |
| 409 | |
| 410 | if (i) |
| 411 | printf("pms_ioctl: SET_RES command error\n" ); |
| 412 | break; |
| 413 | |
| 414 | default: |
| 415 | return EPASSTHROUGH; |
| 416 | } |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | static void |
| 421 | pms_reset_thread(void *arg) |
| 422 | { |
| 423 | struct pms_softc *sc = arg; |
| 424 | u_char cmd[1], resp[2]; |
| 425 | int res; |
| 426 | int save_protocol; |
| 427 | |
| 428 | for (;;) { |
| 429 | tsleep(&sc->sc_enabled, PWAIT, "pmsreset" , 0); |
| 430 | #ifdef PMSDEBUG |
| 431 | if (pmsdebug) |
| 432 | #endif |
| 433 | #if defined(PMSDEBUG) || defined(DIAGNOSTIC) |
| 434 | aprint_debug_dev(sc->sc_dev, |
| 435 | "resetting mouse interface\n" ); |
| 436 | #endif |
| 437 | save_protocol = sc->protocol; |
| 438 | pms_disable(sc); |
| 439 | cmd[0] = PMS_RESET; |
| 440 | res = pckbport_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, |
| 441 | 1, 2, 1, resp); |
| 442 | if (res) { |
| 443 | DPRINTF(("%s: reset error %d\n" , |
| 444 | device_xname(sc->sc_dev), res)); |
| 445 | } |
| 446 | |
| 447 | /* For the synaptics and elantech case, leave the protocol alone. */ |
| 448 | if (sc->protocol != PMS_SYNAPTICS && sc->protocol != PMS_ELANTECH) |
| 449 | sc->protocol = PMS_UNKNOWN; |
| 450 | |
| 451 | pms_enable(sc); |
| 452 | if (sc->protocol != save_protocol) { |
| 453 | #if defined(PMSDEBUG) || defined(DIAGNOSTIC) |
| 454 | aprint_verbose_dev(sc->sc_dev, |
| 455 | "protocol change, sleeping and retrying\n" ); |
| 456 | #endif |
| 457 | pms_disable(sc); |
| 458 | cmd[0] = PMS_RESET; |
| 459 | res = pckbport_enqueue_cmd(sc->sc_kbctag, |
| 460 | sc->sc_kbcslot, cmd, 1, 2, 1, resp); |
| 461 | if (res) { |
| 462 | DPRINTF(("%s: reset error %d\n" , |
| 463 | device_xname(sc->sc_dev), res)); |
| 464 | } |
| 465 | tsleep(pms_reset_thread, PWAIT, "pmsreset" , hz); |
| 466 | cmd[0] = PMS_RESET; |
| 467 | res = pckbport_enqueue_cmd(sc->sc_kbctag, |
| 468 | sc->sc_kbcslot, cmd, 1, 2, 1, resp); |
| 469 | if (res) { |
| 470 | DPRINTF(("%s: reset error %d\n" , |
| 471 | device_xname(sc->sc_dev), res)); |
| 472 | } |
| 473 | sc->protocol = PMS_UNKNOWN; /* reprobe protocol */ |
| 474 | pms_enable(sc); |
| 475 | #if defined(PMSDEBUG) || defined(DIAGNOSTIC) |
| 476 | if (sc->protocol != save_protocol) { |
| 477 | printf("%s: protocol changed.\n" , |
| 478 | device_xname(sc->sc_dev)); |
| 479 | } |
| 480 | #endif |
| 481 | } |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | /* Masks for the first byte of a packet */ |
| 486 | #define PMS_LBUTMASK 0x01 |
| 487 | #define PMS_RBUTMASK 0x02 |
| 488 | #define PMS_MBUTMASK 0x04 |
| 489 | #define PMS_4BUTMASK 0x10 |
| 490 | #define PMS_5BUTMASK 0x20 |
| 491 | |
| 492 | static void |
| 493 | pmsinput(void *vsc, int data) |
| 494 | { |
| 495 | struct pms_softc *sc = vsc; |
| 496 | u_int changed; |
| 497 | int dx, dy, dz = 0; |
| 498 | int newbuttons = 0; |
| 499 | |
| 500 | if (!sc->sc_enabled) { |
| 501 | /* Interrupts are not expected. Discard the byte. */ |
| 502 | return; |
| 503 | } |
| 504 | |
| 505 | getmicrouptime(&sc->current); |
| 506 | |
| 507 | if (sc->inputstate > 0) { |
| 508 | struct timeval diff; |
| 509 | |
| 510 | timersub(&sc->current, &sc->last, &diff); |
| 511 | /* |
| 512 | * Empirically, the delay should be about 1700us on a standard |
| 513 | * PS/2 port. I have seen delays as large as 4500us (rarely) |
| 514 | * in regular use. When using a confused mouse, I generally |
| 515 | * see delays at least as large as 30,000us. -seebs |
| 516 | * |
| 517 | * The thinkpad trackball returns at 22-23ms. So we use |
| 518 | * >= 40ms. In the future, I'll implement adaptable timeout |
| 519 | * by increasing the timeout if the mouse reset happens |
| 520 | * too frequently -christos |
| 521 | */ |
| 522 | if (diff.tv_sec > 0 || diff.tv_usec >= 40000) { |
| 523 | DPRINTF(("pms_input: unusual delay (%ld.%06ld s), " |
| 524 | "scheduling reset\n" , |
| 525 | (long)diff.tv_sec, (long)diff.tv_usec)); |
| 526 | sc->inputstate = 0; |
| 527 | sc->sc_enabled = 0; |
| 528 | wakeup(&sc->sc_enabled); |
| 529 | return; |
| 530 | } |
| 531 | } |
| 532 | sc->last = sc->current; |
| 533 | |
| 534 | if (sc->inputstate == 0) { |
| 535 | /* |
| 536 | * Some devices (seen on trackballs anytime, and on |
| 537 | * some mice shortly after reset) output garbage bytes |
| 538 | * between packets. Just ignore them. |
| 539 | */ |
| 540 | if ((data & 0xc0) != 0) |
| 541 | return; /* not in sync yet, discard input */ |
| 542 | } |
| 543 | |
| 544 | sc->packet[sc->inputstate++] = data & 0xff; |
| 545 | switch (sc->inputstate) { |
| 546 | case 0: |
| 547 | /* no useful processing can be done yet */ |
| 548 | break; |
| 549 | |
| 550 | case 1: |
| 551 | /* |
| 552 | * Why should we test for bit 0x8 and insist on it here? |
| 553 | * The old (psm.c and psm_intelli.c) drivers didn't do |
| 554 | * it, and there are devices where it does harm (that's |
| 555 | * why it is not used if using PMS_STANDARD protocol). |
| 556 | * Anyway, it does not to cause any harm to accept packets |
| 557 | * without this bit. |
| 558 | */ |
| 559 | #if 0 |
| 560 | if (sc->protocol == PMS_STANDARD) |
| 561 | break; |
| 562 | if (!(sc->packet[0] & 0x8)) { |
| 563 | DPRINTF(("pmsinput: 0x8 not set in first byte " |
| 564 | "[0x%02x], resetting\n" , sc->packet[0])); |
| 565 | sc->inputstate = 0; |
| 566 | sc->sc_enabled = 0; |
| 567 | wakeup(&sc->sc_enabled); |
| 568 | return; |
| 569 | } |
| 570 | #endif |
| 571 | break; |
| 572 | |
| 573 | case 2: |
| 574 | break; |
| 575 | |
| 576 | case 4: |
| 577 | /* Case 4 is a superset of case 3. This is *not* an accident. */ |
| 578 | if (sc->protocol == PMS_SCROLL3) { |
| 579 | dz = sc->packet[3]; |
| 580 | if (dz >= 128) |
| 581 | dz -= 256; |
| 582 | if (dz == -128) |
| 583 | dz = -127; |
| 584 | } else if (sc->protocol == PMS_SCROLL5) { |
| 585 | dz = sc->packet[3] & 0xf; |
| 586 | if (dz >= 8) |
| 587 | dz -= 16; |
| 588 | if (sc->packet[3] & PMS_4BUTMASK) |
| 589 | newbuttons |= 0x8; |
| 590 | if (sc->packet[3] & PMS_5BUTMASK) |
| 591 | newbuttons |= 0x10; |
| 592 | } else { |
| 593 | DPRINTF(("pmsinput: why am I looking at this byte?\n" )); |
| 594 | dz = 0; |
| 595 | } |
| 596 | /* FALLTHROUGH */ |
| 597 | case 3: |
| 598 | /* |
| 599 | * This is only an endpoint for scroll protocols with 4 |
| 600 | * bytes, or the standard protocol with 3. |
| 601 | */ |
| 602 | if (sc->protocol != PMS_STANDARD && sc->inputstate == 3) |
| 603 | break; |
| 604 | |
| 605 | newbuttons |= ((sc->packet[0] & PMS_LBUTMASK) ? 0x1 : 0) | |
| 606 | ((sc->packet[0] & PMS_MBUTMASK) ? 0x2 : 0) | |
| 607 | ((sc->packet[0] & PMS_RBUTMASK) ? 0x4 : 0); |
| 608 | |
| 609 | dx = sc->packet[1]; |
| 610 | if (dx >= 128) |
| 611 | dx -= 256; |
| 612 | if (dx == -128) |
| 613 | dx = -127; |
| 614 | |
| 615 | dy = sc->packet[2]; |
| 616 | if (dy >= 128) |
| 617 | dy -= 256; |
| 618 | if (dy == -128) |
| 619 | dy = -127; |
| 620 | |
| 621 | sc->inputstate = 0; |
| 622 | changed = (sc->buttons ^ newbuttons); |
| 623 | sc->buttons = newbuttons; |
| 624 | |
| 625 | #ifdef PMSDEBUG |
| 626 | if (sc->protocol == PMS_STANDARD) { |
| 627 | DPRINTF(("pms: packet: 0x%02x%02x%02x\n" , |
| 628 | sc->packet[0], sc->packet[1], sc->packet[2])); |
| 629 | } else { |
| 630 | DPRINTF(("pms: packet: 0x%02x%02x%02x%02x\n" , |
| 631 | sc->packet[0], sc->packet[1], sc->packet[2], |
| 632 | sc->packet[3])); |
| 633 | } |
| 634 | #endif |
| 635 | if (dx || dy || dz || changed) { |
| 636 | #ifdef PMSDEBUG |
| 637 | DPRINTF(("pms: x %+03d y %+03d z %+03d " |
| 638 | "buttons 0x%02x\n" , dx, dy, dz, sc->buttons)); |
| 639 | #endif |
| 640 | wsmouse_input(sc->sc_wsmousedev, |
| 641 | sc->buttons, dx, dy, dz, 0, |
| 642 | WSMOUSE_INPUT_DELTA); |
| 643 | } |
| 644 | memset(sc->packet, 0, 4); |
| 645 | break; |
| 646 | |
| 647 | /* If we get here, we have problems. */ |
| 648 | default: |
| 649 | printf("pmsinput: very confused. resetting.\n" ); |
| 650 | sc->inputstate = 0; |
| 651 | sc->sc_enabled = 0; |
| 652 | wakeup(&sc->sc_enabled); |
| 653 | return; |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | int |
| 658 | pms_sliced_command(pckbport_tag_t tag, pckbport_slot_t slot, u_char scmd) |
| 659 | { |
| 660 | u_char cmd[2]; |
| 661 | int i, err, ret = 0; |
| 662 | |
| 663 | cmd[0] = PMS_SET_SCALE11; |
| 664 | ret = pckbport_poll_cmd(tag, slot, cmd, 1, 0, NULL, 0); |
| 665 | |
| 666 | /* |
| 667 | * Need to send 4 Set Resolution commands, with the argument |
| 668 | * encoded in the bottom most 2 bits. |
| 669 | */ |
| 670 | for (i = 6; i >= 0; i -= 2) { |
| 671 | cmd[0] = PMS_SET_RES; |
| 672 | cmd[1] = (scmd >> i) & 3; |
| 673 | err = pckbport_poll_cmd(tag, slot, cmd, 2, 0, NULL, 0); |
| 674 | if (ret == 0 && err != 0) { |
| 675 | ret = err; |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | return ret; |
| 680 | } |
| 681 | |