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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 | /* * PS/2 mouse driver * * Copyright (c) 1999-2002 Vojtech Pavlik * Copyright (c) 2003-2004 Dmitry Torokhov */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #include <linux/delay.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/input.h> #include <linux/serio.h> #include <linux/init.h> #include <linux/libps2.h> #include "psmouse.h" #include "synaptics.h" #include "logips2pp.h" #include "alps.h" #define DRIVER_DESC "PS/2 mouse driver" MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); static char *psmouse_proto; static unsigned int psmouse_max_proto = -1U; module_param_named(proto, psmouse_proto, charp, 0); MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps). Useful for KVM switches."); static unsigned int psmouse_resolution = 200; module_param_named(resolution, psmouse_resolution, uint, 0); MODULE_PARM_DESC(resolution, "Resolution, in dpi."); static unsigned int psmouse_rate = 100; module_param_named(rate, psmouse_rate, uint, 0); MODULE_PARM_DESC(rate, "Report rate, in reports per second."); static unsigned int psmouse_smartscroll = 1; module_param_named(smartscroll, psmouse_smartscroll, bool, 0); MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); static unsigned int psmouse_resetafter; module_param_named(resetafter, psmouse_resetafter, uint, 0); MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); PSMOUSE_DEFINE_ATTR(rate); PSMOUSE_DEFINE_ATTR(resolution); PSMOUSE_DEFINE_ATTR(resetafter); __obsolete_setup("psmouse_noext"); __obsolete_setup("psmouse_resolution="); __obsolete_setup("psmouse_smartscroll="); __obsolete_setup("psmouse_resetafter="); __obsolete_setup("psmouse_rate="); static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "ThinkPS/2", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2", "AlpsPS/2" }; /* * psmouse_process_byte() analyzes the PS/2 data stream and reports * relevant events to the input module once full packet has arrived. */ static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs) { struct input_dev *dev = &psmouse->dev; unsigned char *packet = psmouse->packet; if (psmouse->pktcnt < psmouse->pktsize) return PSMOUSE_GOOD_DATA; /* * Full packet accumulated, process it */ input_regs(dev, regs); /* * Scroll wheel on IntelliMice, scroll buttons on NetMice */ if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); /* * Scroll wheel and buttons on IntelliMouse Explorer */ if (psmouse->type == PSMOUSE_IMEX) { input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); } /* * Extra buttons on Genius NewNet 3D */ if (psmouse->type == PSMOUSE_GENPS) { input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); } /* * Extra button on ThinkingMouse */ if (psmouse->type == PSMOUSE_THINKPS) { input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); /* Without this bit of weirdness moving up gives wildly high Y changes. */ packet[1] |= (packet[0] & 0x40) << 1; } /* * Generic PS/2 Mouse */ input_report_key(dev, BTN_LEFT, packet[0] & 1); input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); input_sync(dev); return PSMOUSE_FULL_PACKET; } /* * psmouse_interrupt() handles incoming characters, either gathering them into * packets or passing them to the command routine as command output. */ static irqreturn_t psmouse_interrupt(struct serio *serio, unsigned char data, unsigned int flags, struct pt_regs *regs) { struct psmouse *psmouse = serio->private; psmouse_ret_t rc; if (psmouse->state == PSMOUSE_IGNORE) goto out; if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { if (psmouse->state == PSMOUSE_ACTIVATED) printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", flags & SERIO_TIMEOUT ? " timeout" : "", flags & SERIO_PARITY ? " bad parity" : ""); ps2_cmd_aborted(&psmouse->ps2dev); goto out; } if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) if (ps2_handle_ack(&psmouse->ps2dev, data)) goto out; if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) if (ps2_handle_response(&psmouse->ps2dev, data)) goto out; if (psmouse->state == PSMOUSE_INITIALIZING) goto out; if (psmouse->state == PSMOUSE_ACTIVATED && psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n", psmouse->name, psmouse->phys, psmouse->pktcnt); psmouse->pktcnt = 0; } psmouse->last = jiffies; psmouse->packet[psmouse->pktcnt++] = data; if (psmouse->packet[0] == PSMOUSE_RET_BAT) { if (psmouse->pktcnt == 1) goto out; if (psmouse->pktcnt == 2) { if (psmouse->packet[1] == PSMOUSE_RET_ID) { psmouse->state = PSMOUSE_IGNORE; serio_reconnect(serio); goto out; } if (psmouse->type == PSMOUSE_SYNAPTICS) { /* neither 0xAA nor 0x00 are valid first bytes * for a packet in absolute mode */ psmouse->pktcnt = 0; goto out; } } } rc = psmouse->protocol_handler(psmouse, regs); switch (rc) { case PSMOUSE_BAD_DATA: printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", psmouse->name, psmouse->phys, psmouse->pktcnt); psmouse->pktcnt = 0; if (++psmouse->out_of_sync == psmouse->resetafter) { psmouse->state = PSMOUSE_IGNORE; printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); serio_reconnect(psmouse->ps2dev.serio); } break; case PSMOUSE_FULL_PACKET: psmouse->pktcnt = 0; if (psmouse->out_of_sync) { psmouse->out_of_sync = 0; printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", psmouse->name, psmouse->phys); } break; case PSMOUSE_GOOD_DATA: break; } out: return IRQ_HANDLED; } /* * psmouse_sliced_command() sends an extended PS/2 command to the mouse * using sliced syntax, understood by advanced devices, such as Logitech * or Synaptics touchpads. The command is encoded as: * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu * is the command. */ int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) { int i; if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) return -1; for (i = 6; i >= 0; i -= 2) { unsigned char d = (command >> i) & 3; if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) return -1; } return 0; } /* * psmouse_reset() resets the mouse into power-on state. */ int psmouse_reset(struct psmouse *psmouse) { unsigned char param[2]; if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) return -1; if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) return -1; return 0; } /* * Genius NetMouse magic init. */ static int genius_detect(struct psmouse *psmouse, int set_properties) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[4]; param[0] = 3; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) return -1; if (set_properties) { set_bit(BTN_EXTRA, psmouse->dev.keybit); set_bit(BTN_SIDE, psmouse->dev.keybit); set_bit(REL_WHEEL, psmouse->dev.relbit); psmouse->vendor = "Genius"; psmouse->name = "Wheel Mouse"; psmouse->pktsize = 4; } return 0; } /* * IntelliMouse magic init. */ static int intellimouse_detect(struct psmouse *psmouse, int set_properties) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[2]; param[0] = 200; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); param[0] = 100; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); param[0] = 80; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); if (param[0] != 3) return -1; if (set_properties) { set_bit(REL_WHEEL, psmouse->dev.relbit); if (!psmouse->vendor) psmouse->vendor = "Generic"; if (!psmouse->name) psmouse->name = "Wheel Mouse"; psmouse->pktsize = 4; } return 0; } /* * Try IntelliMouse/Explorer magic init. */ static int im_explorer_detect(struct psmouse *psmouse, int set_properties) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[2]; intellimouse_detect(psmouse, 0); param[0] = 200; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); param[0] = 200; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); param[0] = 80; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); if (param[0] != 4) return -1; if (set_properties) { set_bit(REL_WHEEL, psmouse->dev.relbit); set_bit(BTN_SIDE, psmouse->dev.keybit); set_bit(BTN_EXTRA, psmouse->dev.keybit); if (!psmouse->vendor) psmouse->vendor = "Generic"; if (!psmouse->name) psmouse->name = "Explorer Mouse"; psmouse->pktsize = 4; } return 0; } /* * Kensington ThinkingMouse / ExpertMouse magic init. */ static int thinking_detect(struct psmouse *psmouse, int set_properties) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[2]; unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 }; int i; param[0] = 10; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); param[0] = 0; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); for (i = 0; seq[i]; i++) ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE); ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); if (param[0] != 2) return -1; if (set_properties) { set_bit(BTN_EXTRA, psmouse->dev.keybit); psmouse->vendor = "Kensington"; psmouse->name = "ThinkingMouse"; } return 0; } /* * Bare PS/2 protocol "detection". Always succeeds. */ static int ps2bare_detect(struct psmouse *psmouse, int set_properties) { if (!psmouse->vendor) psmouse->vendor = "Generic"; if (!psmouse->name) psmouse->name = "Mouse"; return 0; } /* * psmouse_extensions() probes for any extensions to the basic PS/2 protocol * the mouse may have. */ static int psmouse_extensions(struct psmouse *psmouse, unsigned int max_proto, int set_properties) { int synaptics_hardware = 0; /* * Try Kensington ThinkingMouse (we try first, because synaptics probe * upsets the thinkingmouse). */ if (max_proto > PSMOUSE_PS2 && thinking_detect(psmouse, set_properties) == 0) return PSMOUSE_THINKPS; /* * Try Synaptics TouchPad */ if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { synaptics_hardware = 1; if (max_proto > PSMOUSE_IMEX) { if (!set_properties || synaptics_init(psmouse) == 0) return PSMOUSE_SYNAPTICS; /* * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). * Unfortunately Logitech/Genius probes confuse some firmware versions so * we'll have to skip them. */ max_proto = PSMOUSE_IMEX; } /* * Make sure that touchpad is in relative mode, gestures (taps) are enabled */ synaptics_reset(psmouse); } /* * Try ALPS TouchPad */ if (max_proto > PSMOUSE_IMEX) { ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); if (alps_detect(psmouse, set_properties) == 0) { if (!set_properties || alps_init(psmouse) == 0) return PSMOUSE_ALPS; /* * Init failed, try basic relative protocols */ max_proto = PSMOUSE_IMEX; } } if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0) return PSMOUSE_GENPS; if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0) return PSMOUSE_PS2PP; /* * Reset to defaults in case the device got confused by extended * protocol probes. */ ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) return PSMOUSE_IMEX; if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) return PSMOUSE_IMPS; /* * Okay, all failed, we have a standard mouse here. The number of the buttons * is still a question, though. We assume 3. */ ps2bare_detect(psmouse, set_properties); if (synaptics_hardware) { /* * We detected Synaptics hardware but it did not respond to IMPS/2 probes. * We need to reset the touchpad because if there is a track point on the * pass through port it could get disabled while probing for protocol * extensions. */ psmouse_reset(psmouse); ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); } return PSMOUSE_PS2; } /* * psmouse_probe() probes for a PS/2 mouse. */ static int psmouse_probe(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[2]; /* * First, we check if it's a mouse. It should send 0x00 or 0x03 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. */ param[0] = 0xa5; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) return -1; if (param[0] != 0x00 && param[0] != 0x03 && param[0] != 0x04) return -1; /* * Then we reset and disable the mouse so that it doesn't generate events. */ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys); return 0; } /* * Here we set the mouse resolution. */ void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) { unsigned char params[] = { 0, 1, 2, 2, 3 }; if (resolution == 0 || resolution > 200) resolution = 200; ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES); psmouse->resolution = 25 << params[resolution / 50]; } /* * Here we set the mouse report rate. */ static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) { unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; int i = 0; while (rates[i] > rate) i++; ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE); psmouse->rate = rates[i]; } /* * psmouse_initialize() initializes the mouse to a sane state. */ static void psmouse_initialize(struct psmouse *psmouse) { /* * We set the mouse into streaming mode. */ ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM); /* * We set the mouse report rate, resolution and scaling. */ if (psmouse_max_proto != PSMOUSE_PS2) { psmouse->set_rate(psmouse, psmouse->rate); psmouse->set_resolution(psmouse, psmouse->resolution); ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); } } /* * psmouse_set_state() sets new psmouse state and resets all flags and * counters while holding serio lock so fighting with interrupt handler * is not a concern. */ static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) { serio_pause_rx(psmouse->ps2dev.serio); psmouse->state = new_state; psmouse->pktcnt = psmouse->out_of_sync = 0; psmouse->ps2dev.flags = 0; serio_continue_rx(psmouse->ps2dev.serio); } /* * psmouse_activate() enables the mouse so that we get motion reports from it. */ static void psmouse_activate(struct psmouse *psmouse) { if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", psmouse->ps2dev.serio->phys); psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); } /* * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion * reports from it unless we explicitely request it. */ static void psmouse_deactivate(struct psmouse *psmouse) { if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", psmouse->ps2dev.serio->phys); psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); } /* * psmouse_cleanup() resets the mouse into power-on state. */ static void psmouse_cleanup(struct serio *serio) { struct psmouse *psmouse = serio->private; psmouse_reset(psmouse); } /* * psmouse_disconnect() closes and frees. */ static void psmouse_disconnect(struct serio *serio) { struct psmouse *psmouse, *parent; device_remove_file(&serio->dev, &psmouse_attr_rate); device_remove_file(&serio->dev, &psmouse_attr_resolution); device_remove_file(&serio->dev, &psmouse_attr_resetafter); psmouse = serio->private; psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) { parent = serio->parent->private; if (parent->pt_deactivate) parent->pt_deactivate(parent); } if (psmouse->disconnect) psmouse->disconnect(psmouse); psmouse_set_state(psmouse, PSMOUSE_IGNORE); input_unregister_device(&psmouse->dev); serio_close(serio); kfree(psmouse); } /* * psmouse_connect() is a callback from the serio module when * an unhandled serio port is found. */ static void psmouse_connect(struct serio *serio, struct serio_driver *drv) { struct psmouse *psmouse, *parent = NULL; if ((serio->type & SERIO_TYPE) != SERIO_8042 && (serio->type & SERIO_TYPE) != SERIO_PS_PSTHRU) return; /* * If this is a pass-through port deactivate parent so the device * connected to this port can be successfully identified */ if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) { parent = serio->parent->private; psmouse_deactivate(parent); } if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL))) goto out; memset(psmouse, 0, sizeof(struct psmouse)); ps2_init(&psmouse->ps2dev, serio); psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL); psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y); psmouse->dev.private = psmouse; psmouse->dev.dev = &serio->dev; psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); serio->private = psmouse; if (serio_open(serio, drv)) { kfree(psmouse); serio->private = NULL; goto out; } if (psmouse_probe(psmouse) < 0) { serio_close(serio); kfree(psmouse); serio->private = NULL; goto out; } psmouse->rate = psmouse_rate; psmouse->resolution = psmouse_resolution; psmouse->resetafter = psmouse_resetafter; psmouse->smartscroll = psmouse_smartscroll; psmouse->set_rate = psmouse_set_rate; psmouse->set_resolution = psmouse_set_resolution; psmouse->protocol_handler = psmouse_process_byte; psmouse->pktsize = 3; psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1); sprintf(psmouse->devname, "%s %s %s", psmouse_protocols[psmouse->type], psmouse->vendor, psmouse->name); sprintf(psmouse->phys, "%s/input0", serio->phys); psmouse->dev.name = psmouse->devname; psmouse->dev.phys = psmouse->phys; psmouse->dev.id.bustype = BUS_I8042; psmouse->dev.id.vendor = 0x0002; psmouse->dev.id.product = psmouse->type; psmouse->dev.id.version = psmouse->model; input_register_device(&psmouse->dev); printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys); psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); psmouse_initialize(psmouse); if (parent && parent->pt_activate) parent->pt_activate(parent); device_create_file(&serio->dev, &psmouse_attr_rate); device_create_file(&serio->dev, &psmouse_attr_resolution); device_create_file(&serio->dev, &psmouse_attr_resetafter); if (serio->child) { /* * Nothing to be done here, serio core will detect that * the driver set serio->child and will register it for us. */ printk(KERN_INFO "serio: %s port at %s\n", serio->child->name, psmouse->phys); } psmouse_activate(psmouse); out: /* If this is a pass-through port the parent awaits to be activated */ if (parent) psmouse_activate(parent); } static int psmouse_reconnect(struct serio *serio) { struct psmouse *psmouse = serio->private; struct psmouse *parent = NULL; struct serio_driver *drv = serio->drv; int rc = -1; if (!drv || !psmouse) { printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n"); return -1; } if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) { parent = serio->parent->private; psmouse_deactivate(parent); } psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); if (psmouse->reconnect) { if (psmouse->reconnect(psmouse)) goto out; } else if (psmouse_probe(psmouse) < 0 || psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0)) goto out; /* ok, the device type (and capabilities) match the old one, * we can continue using it, complete intialization */ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); psmouse_initialize(psmouse); if (parent && parent->pt_activate) parent->pt_activate(parent); psmouse_activate(psmouse); rc = 0; out: /* If this is a pass-through port the parent waits to be activated */ if (parent) psmouse_activate(parent); return rc; } static struct serio_driver psmouse_drv = { .driver = { .name = "psmouse", }, .description = DRIVER_DESC, .interrupt = psmouse_interrupt, .connect = psmouse_connect, .reconnect = psmouse_reconnect, .disconnect = psmouse_disconnect, .cleanup = psmouse_cleanup, }; ssize_t psmouse_attr_show_helper(struct device *dev, char *buf, ssize_t (*handler)(struct psmouse *, char *)) { struct serio *serio = to_serio_port(dev); int retval; retval = serio_pin_driver(serio); if (retval) return retval; if (serio->drv != &psmouse_drv) { retval = -ENODEV; goto out; } retval = handler(serio->private, buf); out: serio_unpin_driver(serio); return retval; } ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count, ssize_t (*handler)(struct psmouse *, const char *, size_t)) { struct serio *serio = to_serio_port(dev); struct psmouse *psmouse = serio->private, *parent = NULL; int retval; retval = serio_pin_driver(serio); if (retval) return retval; if (serio->drv != &psmouse_drv) { retval = -ENODEV; goto out; } if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) { parent = serio->parent->private; psmouse_deactivate(parent); } psmouse_deactivate(psmouse); retval = handler(psmouse, buf, count); psmouse_activate(psmouse); if (parent) psmouse_activate(parent); out: serio_unpin_driver(serio); return retval; } static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf) { return sprintf(buf, "%d\n", psmouse->rate); } static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count) { unsigned long value; char *rest; value = simple_strtoul(buf, &rest, 10); if (*rest) return -EINVAL; psmouse->set_rate(psmouse, value); return count; } static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf) { return sprintf(buf, "%d\n", psmouse->resolution); } static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count) { unsigned long value; char *rest; value = simple_strtoul(buf, &rest, 10); if (*rest) return -EINVAL; psmouse->set_resolution(psmouse, value); return count; } static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf) { return sprintf(buf, "%d\n", psmouse->resetafter); } static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count) { unsigned long value; char *rest; value = simple_strtoul(buf, &rest, 10); if (*rest) return -EINVAL; psmouse->resetafter = value; return count; } static inline void psmouse_parse_proto(void) { if (psmouse_proto) { if (!strcmp(psmouse_proto, "bare")) psmouse_max_proto = PSMOUSE_PS2; else if (!strcmp(psmouse_proto, "imps")) psmouse_max_proto = PSMOUSE_IMPS; else if (!strcmp(psmouse_proto, "exps")) psmouse_max_proto = PSMOUSE_IMEX; else printk(KERN_ERR "psmouse: unknown protocol type '%s'\n", psmouse_proto); } } int __init psmouse_init(void) { psmouse_parse_proto(); serio_register_driver(&psmouse_drv); return 0; } void __exit psmouse_exit(void) { serio_unregister_driver(&psmouse_drv); } module_init(psmouse_init); module_exit(psmouse_exit); |