drivers/input/serio/i8042-x86ia64io.h

   1 #ifndef _I8042_X86IA64IO_H
   2 #define _I8042_X86IA64IO_H
   3
   4 /*
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  */
   9
  10 #ifdef CONFIG_X86
  11 #include <asm/x86_init.h>
  12 #endif
  13
  14 /*
  15  * Names.
  16  */
  17
  18 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
  19 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
  20 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
  21
  22 /*
  23  * IRQs.
  24  */
  25
  26 #if defined(__ia64__)
  27 # define I8042_MAP_IRQ(x)       isa_irq_to_vector((x))
  28 #else
  29 # define I8042_MAP_IRQ(x)       (x)
  30 #endif
  31
  32 #define I8042_KBD_IRQ   i8042_kbd_irq
  33 #define I8042_AUX_IRQ   i8042_aux_irq
  34
  35 static int i8042_kbd_irq;
  36 static int i8042_aux_irq;
  37
  38 /*
  39  * Register numbers.
  40  */
  41
  42 #define I8042_COMMAND_REG       i8042_command_reg
  43 #define I8042_STATUS_REG        i8042_command_reg
  44 #define I8042_DATA_REG          i8042_data_reg
  45
  46 static int i8042_command_reg = 0x64;
  47 static int i8042_data_reg = 0x60;
  48
  49
  50 static inline int i8042_read_data(void)
  51 {
  52         return inb(I8042_DATA_REG);
  53 }
  54
  55 static inline int i8042_read_status(void)
  56 {
  57         return inb(I8042_STATUS_REG);
  58 }
  59
  60 static inline void i8042_write_data(int val)
  61 {
  62         outb(val, I8042_DATA_REG);
  63 }
  64
  65 static inline void i8042_write_command(int val)
  66 {
  67         outb(val, I8042_COMMAND_REG);
  68 }
  69
  70 #ifdef CONFIG_X86
  71
  72 #include <linux/dmi.h>
  73
  74 static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = {
  75         {
  76                 /*
  77                  * Arima-Rioworks HDAMB -
  78                  * AUX LOOP command does not raise AUX IRQ
  79                  */
  80                 .matches = {
  81                         DMI_MATCH(DMI_BOARD_VENDOR, "RIOWORKS"),
  82                         DMI_MATCH(DMI_BOARD_NAME, "HDAMB"),
  83                         DMI_MATCH(DMI_BOARD_VERSION, "Rev E"),
  84                 },
  85         },
  86         {
  87                 /* ASUS G1S */
  88                 .matches = {
  89                         DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc."),
  90                         DMI_MATCH(DMI_BOARD_NAME, "G1S"),
  91                         DMI_MATCH(DMI_BOARD_VERSION, "1.0"),
  92                 },
  93         },
  94         {
  95                 /* ASUS P65UP5 - AUX LOOP command does not raise AUX IRQ */
  96                 .matches = {
  97                         DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
  98                         DMI_MATCH(DMI_BOARD_NAME, "P/I-P65UP5"),
  99                         DMI_MATCH(DMI_BOARD_VERSION, "REV 2.X"),
 100                 },
 101         },
 102         {
 103                 .matches = {
 104                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 105                         DMI_MATCH(DMI_PRODUCT_NAME, "X750LN"),
 106                 },
 107         },
 108         {
 109                 .matches = {
 110                         DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
 111                         DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
 112                         DMI_MATCH(DMI_PRODUCT_VERSION, "8500"),
 113                 },
 114         },
 115         {
 116                 .matches = {
 117                         DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
 118                         DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
 119                         DMI_MATCH(DMI_PRODUCT_VERSION, "DL760"),
 120                 },
 121         },
 122         {
 123                 /* Dell Embedded Box PC 3000 */
 124                 .matches = {
 125                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 126                         DMI_MATCH(DMI_PRODUCT_NAME, "Embedded Box PC 3000"),
 127                 },
 128         },
 129         {
 130                 /* OQO Model 01 */
 131                 .matches = {
 132                         DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
 133                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
 134                         DMI_MATCH(DMI_PRODUCT_VERSION, "00"),
 135                 },
 136         },
 137         {
 138                 /* ULI EV4873 - AUX LOOP does not work properly */
 139                 .matches = {
 140                         DMI_MATCH(DMI_SYS_VENDOR, "ULI"),
 141                         DMI_MATCH(DMI_PRODUCT_NAME, "EV4873"),
 142                         DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
 143                 },
 144         },
 145         {
 146                 /* Microsoft Virtual Machine */
 147                 .matches = {
 148                         DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 149                         DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
 150                         DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
 151                 },
 152         },
 153         {
 154                 /* Medion MAM 2070 */
 155                 .matches = {
 156                         DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
 157                         DMI_MATCH(DMI_PRODUCT_NAME, "MAM 2070"),
 158                         DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
 159                 },
 160         },
 161         {
 162                 /* Medion Akoya E7225 */
 163                 .matches = {
 164                         DMI_MATCH(DMI_SYS_VENDOR, "Medion"),
 165                         DMI_MATCH(DMI_PRODUCT_NAME, "Akoya E7225"),
 166                         DMI_MATCH(DMI_PRODUCT_VERSION, "1.0"),
 167                 },
 168         },
 169         {
 170                 /* Blue FB5601 */
 171                 .matches = {
 172                         DMI_MATCH(DMI_SYS_VENDOR, "blue"),
 173                         DMI_MATCH(DMI_PRODUCT_NAME, "FB5601"),
 174                         DMI_MATCH(DMI_PRODUCT_VERSION, "M606"),
 175                 },
 176         },
 177         {
 178                 /* Gigabyte M912 */
 179                 .matches = {
 180                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 181                         DMI_MATCH(DMI_PRODUCT_NAME, "M912"),
 182                         DMI_MATCH(DMI_PRODUCT_VERSION, "01"),
 183                 },
 184         },
 185         {
 186                 /* Gigabyte M1022M netbook */
 187                 .matches = {
 188                         DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co.,Ltd."),
 189                         DMI_MATCH(DMI_BOARD_NAME, "M1022E"),
 190                         DMI_MATCH(DMI_BOARD_VERSION, "1.02"),
 191                 },
 192         },
 193         {
 194                 /* Gigabyte Spring Peak - defines wrong chassis type */
 195                 .matches = {
 196                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 197                         DMI_MATCH(DMI_PRODUCT_NAME, "Spring Peak"),
 198                 },
 199         },
 200         {
 201                 /* Gigabyte T1005 - defines wrong chassis type ("Other") */
 202                 .matches = {
 203                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 204                         DMI_MATCH(DMI_PRODUCT_NAME, "T1005"),
 205                 },
 206         },
 207         {
 208                 /* Gigabyte T1005M/P - defines wrong chassis type ("Other") */
 209                 .matches = {
 210                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 211                         DMI_MATCH(DMI_PRODUCT_NAME, "T1005M/P"),
 212                 },
 213         },
 214         {
 215                 .matches = {
 216                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 217                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv9700"),
 218                         DMI_MATCH(DMI_PRODUCT_VERSION, "Rev 1"),
 219                 },
 220         },
 221         {
 222                 .matches = {
 223                         DMI_MATCH(DMI_SYS_VENDOR, "PEGATRON CORPORATION"),
 224                         DMI_MATCH(DMI_PRODUCT_NAME, "C15B"),
 225                 },
 226         },
 227         { }
 228 };
 229
 230 /*
 231  * Some Fujitsu notebooks are having trouble with touchpads if
 232  * active multiplexing mode is activated. Luckily they don't have
 233  * external PS/2 ports so we can safely disable it.
 234  * ... apparently some Toshibas don't like MUX mode either and
 235  * die horrible death on reboot.
 236  */
 237 static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
 238         {
 239                 /* Fujitsu Lifebook P7010/P7010D */
 240                 .matches = {
 241                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 242                         DMI_MATCH(DMI_PRODUCT_NAME, "P7010"),
 243                 },
 244         },
 245         {
 246                 /* Fujitsu Lifebook P7010 */
 247                 .matches = {
 248                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 249                         DMI_MATCH(DMI_PRODUCT_NAME, "0000000000"),
 250                 },
 251         },
 252         {
 253                 /* Fujitsu Lifebook P5020D */
 254                 .matches = {
 255                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 256                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P Series"),
 257                 },
 258         },
 259         {
 260                 /* Fujitsu Lifebook S2000 */
 261                 .matches = {
 262                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 263                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook S Series"),
 264                 },
 265         },
 266         {
 267                 /* Fujitsu Lifebook S6230 */
 268                 .matches = {
 269                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 270                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook S6230"),
 271                 },
 272         },
 273         {
 274                 /* Fujitsu Lifebook U745 */
 275                 .matches = {
 276                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 277                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"),
 278                 },
 279         },
 280         {
 281                 /* Fujitsu T70H */
 282                 .matches = {
 283                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 284                         DMI_MATCH(DMI_PRODUCT_NAME, "FMVLT70H"),
 285                 },
 286         },
 287         {
 288                 /* Fujitsu-Siemens Lifebook T3010 */
 289                 .matches = {
 290                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 291                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T3010"),
 292                 },
 293         },
 294         {
 295                 /* Fujitsu-Siemens Lifebook E4010 */
 296                 .matches = {
 297                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 298                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E4010"),
 299                 },
 300         },
 301         {
 302                 /* Fujitsu-Siemens Amilo Pro 2010 */
 303                 .matches = {
 304                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 305                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro V2010"),
 306                 },
 307         },
 308         {
 309                 /* Fujitsu-Siemens Amilo Pro 2030 */
 310                 .matches = {
 311                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 312                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
 313                 },
 314         },
 315         {
 316                 /*
 317                  * No data is coming from the touchscreen unless KBC
 318                  * is in legacy mode.
 319                  */
 320                 /* Panasonic CF-29 */
 321                 .matches = {
 322                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 323                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
 324                 },
 325         },
 326         {
 327                 /*
 328                  * HP Pavilion DV4017EA -
 329                  * errors on MUX ports are reported without raising AUXDATA
 330                  * causing "spurious NAK" messages.
 331                  */
 332                 .matches = {
 333                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 334                         DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EA032EA#ABF)"),
 335                 },
 336         },
 337         {
 338                 /*
 339                  * HP Pavilion ZT1000 -
 340                  * like DV4017EA does not raise AUXERR for errors on MUX ports.
 341                  */
 342                 .matches = {
 343                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 344                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion Notebook PC"),
 345                         DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook ZT1000"),
 346                 },
 347         },
 348         {
 349                 /*
 350                  * HP Pavilion DV4270ca -
 351                  * like DV4017EA does not raise AUXERR for errors on MUX ports.
 352                  */
 353                 .matches = {
 354                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 355                         DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EH476UA#ABL)"),
 356                 },
 357         },
 358         {
 359                 .matches = {
 360                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 361                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P10"),
 362                 },
 363         },
 364         {
 365                 .matches = {
 366                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 367                         DMI_MATCH(DMI_PRODUCT_NAME, "EQUIUM A110"),
 368                 },
 369         },
 370         {
 371                 .matches = {
 372                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 373                         DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE C850D"),
 374                 },
 375         },
 376         {
 377                 .matches = {
 378                         DMI_MATCH(DMI_SYS_VENDOR, "ALIENWARE"),
 379                         DMI_MATCH(DMI_PRODUCT_NAME, "Sentia"),
 380                 },
 381         },
 382         {
 383                 /* Sharp Actius MM20 */
 384                 .matches = {
 385                         DMI_MATCH(DMI_SYS_VENDOR, "SHARP"),
 386                         DMI_MATCH(DMI_PRODUCT_NAME, "PC-MM20 Series"),
 387                 },
 388         },
 389         {
 390                 /* Sony Vaio FS-115b */
 391                 .matches = {
 392                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 393                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FS115B"),
 394                 },
 395         },
 396         {
 397                 /*
 398                  * Sony Vaio FZ-240E -
 399                  * reset and GET ID commands issued via KBD port are
 400                  * sometimes being delivered to AUX3.
 401                  */
 402                 .matches = {
 403                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 404                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ240E"),
 405                 },
 406         },
 407         {
 408                 /*
 409                  * Most (all?) VAIOs do not have external PS/2 ports nor
 410                  * they implement active multiplexing properly, and
 411                  * MUX discovery usually messes up keyboard/touchpad.
 412                  */
 413                 .matches = {
 414                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 415                         DMI_MATCH(DMI_BOARD_NAME, "VAIO"),
 416                 },
 417         },
 418         {
 419                 /* Amoi M636/A737 */
 420                 .matches = {
 421                         DMI_MATCH(DMI_SYS_VENDOR, "Amoi Electronics CO.,LTD."),
 422                         DMI_MATCH(DMI_PRODUCT_NAME, "M636/A737 platform"),
 423                 },
 424         },
 425         {
 426                 /* Lenovo 3000 n100 */
 427                 .matches = {
 428                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 429                         DMI_MATCH(DMI_PRODUCT_NAME, "076804U"),
 430                 },
 431         },
 432         {
 433                 .matches = {
 434                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 435                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 436                 },
 437         },
 438         {
 439                 /* Acer Aspire 5710 */
 440                 .matches = {
 441                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 442                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710"),
 443                 },
 444         },
 445         {
 446                 /* Acer Aspire 7738 */
 447                 .matches = {
 448                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 449                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7738"),
 450                 },
 451         },
 452         {
 453                 /* Gericom Bellagio */
 454                 .matches = {
 455                         DMI_MATCH(DMI_SYS_VENDOR, "Gericom"),
 456                         DMI_MATCH(DMI_PRODUCT_NAME, "N34AS6"),
 457                 },
 458         },
 459         {
 460                 /* IBM 2656 */
 461                 .matches = {
 462                         DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
 463                         DMI_MATCH(DMI_PRODUCT_NAME, "2656"),
 464                 },
 465         },
 466         {
 467                 /* Dell XPS M1530 */
 468                 .matches = {
 469                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 470                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS M1530"),
 471                 },
 472         },
 473         {
 474                 /* Compal HEL80I */
 475                 .matches = {
 476                         DMI_MATCH(DMI_SYS_VENDOR, "COMPAL"),
 477                         DMI_MATCH(DMI_PRODUCT_NAME, "HEL80I"),
 478                 },
 479         },
 480         {
 481                 /* Dell Vostro 1510 */
 482                 .matches = {
 483                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 484                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro1510"),
 485                 },
 486         },
 487         {
 488                 /* Acer Aspire 5536 */
 489                 .matches = {
 490                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 491                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5536"),
 492                         DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
 493                 },
 494         },
 495         {
 496                 /* Dell Vostro V13 */
 497                 .matches = {
 498                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 499                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
 500                 },
 501         },
 502         {
 503                 /* Newer HP Pavilion dv4 models */
 504                 .matches = {
 505                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 506                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
 507                 },
 508         },
 509         {
 510                 /* Asus X450LCP */
 511                 .matches = {
 512                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 513                         DMI_MATCH(DMI_PRODUCT_NAME, "X450LCP"),
 514                 },
 515         },
 516         {
 517                 /* Avatar AVIU-145A6 */
 518                 .matches = {
 519                         DMI_MATCH(DMI_SYS_VENDOR, "Intel"),
 520                         DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
 521                 },
 522         },
 523         {
 524                 /* TUXEDO BU1406 */
 525                 .matches = {
 526                         DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
 527                         DMI_MATCH(DMI_PRODUCT_NAME, "N24_25BU"),
 528                 },
 529         },
 530         { }
 531 };
 532
 533 /*
 534  * On some Asus laptops, just running self tests cause problems.
 535  */
 536 static const struct dmi_system_id i8042_dmi_noselftest_table[] = {
 537         {
 538                 .matches = {
 539                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 540                         DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
 541                 },
 542         },
 543         { }
 544 };
 545 static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
 546         {
 547                 /* MSI Wind U-100 */
 548                 .matches = {
 549                         DMI_MATCH(DMI_BOARD_NAME, "U-100"),
 550                         DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
 551                 },
 552         },
 553         {
 554                 /* LG Electronics X110 */
 555                 .matches = {
 556                         DMI_MATCH(DMI_BOARD_NAME, "X110"),
 557                         DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."),
 558                 },
 559         },
 560         {
 561                 /* Acer Aspire One 150 */
 562                 .matches = {
 563                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 564                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 565                 },
 566         },
 567         {
 568                 /* Advent 4211 */
 569                 .matches = {
 570                         DMI_MATCH(DMI_SYS_VENDOR, "DIXONSXP"),
 571                         DMI_MATCH(DMI_PRODUCT_NAME, "Advent 4211"),
 572                 },
 573         },
 574         {
 575                 /* Medion Akoya Mini E1210 */
 576                 .matches = {
 577                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 578                         DMI_MATCH(DMI_PRODUCT_NAME, "E1210"),
 579                 },
 580         },
 581         {
 582                 /* Medion Akoya E1222 */
 583                 .matches = {
 584                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 585                         DMI_MATCH(DMI_PRODUCT_NAME, "E122X"),
 586                 },
 587         },
 588         {
 589                 /* Mivvy M310 */
 590                 .matches = {
 591                         DMI_MATCH(DMI_SYS_VENDOR, "VIOOO"),
 592                         DMI_MATCH(DMI_PRODUCT_NAME, "N10"),
 593                 },
 594         },
 595         {
 596                 /* Dell Vostro 1320 */
 597                 .matches = {
 598                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 599                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1320"),
 600                 },
 601         },
 602         {
 603                 /* Dell Vostro 1520 */
 604                 .matches = {
 605                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 606                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1520"),
 607                 },
 608         },
 609         {
 610                 /* Dell Vostro 1720 */
 611                 .matches = {
 612                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 613                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"),
 614                 },
 615         },
 616         {
 617                 /* Lenovo Ideapad U455 */
 618                 .matches = {
 619                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 620                         DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
 621                 },
 622         },
 623         {
 624                 /* Clevo P650RS, 650RP6, Sager NP8152-S, and others */
 625                 .matches = {
 626                         DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
 627                         DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
 628                 },
 629         },
 630         { }
 631 };
 632
 633 #ifdef CONFIG_PNP
 634 static const struct dmi_system_id __initconst i8042_dmi_nopnp_table[] = {
 635         {
 636                 /* Intel MBO Desktop D845PESV */
 637                 .matches = {
 638                         DMI_MATCH(DMI_BOARD_NAME, "D845PESV"),
 639                         DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
 640                 },
 641         },
 642         {
 643                 /*
 644                  * Intel NUC D54250WYK - does not have i8042 controller but
 645                  * declares PS/2 devices in DSDT.
 646                  */
 647                 .matches = {
 648                         DMI_MATCH(DMI_BOARD_NAME, "D54250WYK"),
 649                         DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
 650                 },
 651         },
 652         {
 653                 /* MSI Wind U-100 */
 654                 .matches = {
 655                         DMI_MATCH(DMI_BOARD_NAME, "U-100"),
 656                         DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
 657                 },
 658         },
 659         { }
 660 };
 661
 662 static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = {
 663         {
 664                 .matches = {
 665                         DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
 666                 },
 667         },
 668         {
 669                 .matches = {
 670                         DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */
 671                 },
 672         },
 673         {
 674                 .matches = {
 675                         DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
 676                 },
 677         },
 678         {
 679                 .matches = {
 680                         DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */
 681                 },
 682         },
 683         { }
 684 };
 685 #endif
 686
 687 static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
 688         {
 689                 /* Dell Vostro V13 */
 690                 .matches = {
 691                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 692                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
 693                 },
 694         },
 695         {
 696                 /* Newer HP Pavilion dv4 models */
 697                 .matches = {
 698                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 699                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
 700                 },
 701         },
 702         {
 703                 /* Fujitsu A544 laptop */
 704                 /* https://bugzilla.redhat.com/show_bug.cgi?id=1111138 */
 705                 .matches = {
 706                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 707                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK A544"),
 708                 },
 709         },
 710         {
 711                 /* Fujitsu AH544 laptop */
 712                 /* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
 713                 .matches = {
 714                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 715                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK AH544"),
 716                 },
 717         },
 718         {
 719                 /* Fujitsu U574 laptop */
 720                 /* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
 721                 .matches = {
 722                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 723                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
 724                 },
 725         },
 726         {
 727                 /* Fujitsu UH554 laptop */
 728                 .matches = {
 729                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 730                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK UH544"),
 731                 },
 732         },
 733         { }
 734 };
 735
 736 /*
 737  * Some Wistron based laptops need us to explicitly enable the 'Dritek
 738  * keyboard extension' to make their extra keys start generating scancodes.
 739  * Originally, this was just confined to older laptops, but a few Acer laptops
 740  * have turned up in 2007 that also need this again.
 741  */
 742 static const struct dmi_system_id __initconst i8042_dmi_dritek_table[] = {
 743         {
 744                 /* Acer Aspire 5100 */
 745                 .matches = {
 746                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 747                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 748                 },
 749         },
 750         {
 751                 /* Acer Aspire 5610 */
 752                 .matches = {
 753                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 754                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 755                 },
 756         },
 757         {
 758                 /* Acer Aspire 5630 */
 759                 .matches = {
 760                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 761                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 762                 },
 763         },
 764         {
 765                 /* Acer Aspire 5650 */
 766                 .matches = {
 767                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 768                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 769                 },
 770         },
 771         {
 772                 /* Acer Aspire 5680 */
 773                 .matches = {
 774                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 775                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 776                 },
 777         },
 778         {
 779                 /* Acer Aspire 5720 */
 780                 .matches = {
 781                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 782                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
 783                 },
 784         },
 785         {
 786                 /* Acer Aspire 9110 */
 787                 .matches = {
 788                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 789                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 790                 },
 791         },
 792         {
 793                 /* Acer TravelMate 660 */
 794                 .matches = {
 795                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 796                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 660"),
 797                 },
 798         },
 799         {
 800                 /* Acer TravelMate 2490 */
 801                 .matches = {
 802                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 803                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 804                 },
 805         },
 806         {
 807                 /* Acer TravelMate 4280 */
 808                 .matches = {
 809                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 810                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4280"),
 811                 },
 812         },
 813         { }
 814 };
 815
 816 /*
 817  * Some laptops need keyboard reset before probing for the trackpad to get
 818  * it detected, initialised & finally work.
 819  */
 820 static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = {
 821         {
 822                 /* Gigabyte P35 v2 - Elantech touchpad */
 823                 .matches = {
 824                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 825                         DMI_MATCH(DMI_PRODUCT_NAME, "P35V2"),
 826                 },
 827         },
 828                 {
 829                 /* Aorus branded Gigabyte X3 Plus - Elantech touchpad */
 830                 .matches = {
 831                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 832                         DMI_MATCH(DMI_PRODUCT_NAME, "X3"),
 833                 },
 834         },
 835         {
 836                 /* Gigabyte P34 - Elantech touchpad */
 837                 .matches = {
 838                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 839                         DMI_MATCH(DMI_PRODUCT_NAME, "P34"),
 840                 },
 841         },
 842         {
 843                 /* Schenker XMG C504 - Elantech touchpad */
 844                 .matches = {
 845                         DMI_MATCH(DMI_SYS_VENDOR, "XMG"),
 846                         DMI_MATCH(DMI_PRODUCT_NAME, "C504"),
 847                 },
 848         },
 849         { }
 850 };
 851
 852 #endif /* CONFIG_X86 */
 853
 854 #ifdef CONFIG_PNP
 855 #include <linux/pnp.h>
 856
 857 static bool i8042_pnp_kbd_registered;
 858 static unsigned int i8042_pnp_kbd_devices;
 859 static bool i8042_pnp_aux_registered;
 860 static unsigned int i8042_pnp_aux_devices;
 861
 862 static int i8042_pnp_command_reg;
 863 static int i8042_pnp_data_reg;
 864 static int i8042_pnp_kbd_irq;
 865 static int i8042_pnp_aux_irq;
 866
 867 static char i8042_pnp_kbd_name[32];
 868 static char i8042_pnp_aux_name[32];
 869
 870 static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size)
 871 {
 872         strlcpy(dst, "PNP:", dst_size);
 873
 874         while (id) {
 875                 strlcat(dst, " ", dst_size);
 876                 strlcat(dst, id->id, dst_size);
 877                 id = id->next;
 878         }
 879 }
 880
 881 static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
 882 {
 883         if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
 884                 i8042_pnp_data_reg = pnp_port_start(dev,0);
 885
 886         if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
 887                 i8042_pnp_command_reg = pnp_port_start(dev, 1);
 888
 889         if (pnp_irq_valid(dev,0))
 890                 i8042_pnp_kbd_irq = pnp_irq(dev, 0);
 891
 892         strlcpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name));
 893         if (strlen(pnp_dev_name(dev))) {
 894                 strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name));
 895                 strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name));
 896         }
 897         i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id,
 898                                sizeof(i8042_kbd_firmware_id));
 899
 900         /* Keyboard ports are always supposed to be wakeup-enabled */
 901         device_set_wakeup_enable(&dev->dev, true);
 902
 903         i8042_pnp_kbd_devices++;
 904         return 0;
 905 }
 906
 907 static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
 908 {
 909         if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
 910                 i8042_pnp_data_reg = pnp_port_start(dev,0);
 911
 912         if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
 913                 i8042_pnp_command_reg = pnp_port_start(dev, 1);
 914
 915         if (pnp_irq_valid(dev, 0))
 916                 i8042_pnp_aux_irq = pnp_irq(dev, 0);
 917
 918         strlcpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name));
 919         if (strlen(pnp_dev_name(dev))) {
 920                 strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name));
 921                 strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name));
 922         }
 923         i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id,
 924                                sizeof(i8042_aux_firmware_id));
 925
 926         i8042_pnp_aux_devices++;
 927         return 0;
 928 }
 929
 930 static struct pnp_device_id pnp_kbd_devids[] = {
 931         { .id = "PNP0300", .driver_data = 0 },
 932         { .id = "PNP0301", .driver_data = 0 },
 933         { .id = "PNP0302", .driver_data = 0 },
 934         { .id = "PNP0303", .driver_data = 0 },
 935         { .id = "PNP0304", .driver_data = 0 },
 936         { .id = "PNP0305", .driver_data = 0 },
 937         { .id = "PNP0306", .driver_data = 0 },
 938         { .id = "PNP0309", .driver_data = 0 },
 939         { .id = "PNP030a", .driver_data = 0 },
 940         { .id = "PNP030b", .driver_data = 0 },
 941         { .id = "PNP0320", .driver_data = 0 },
 942         { .id = "PNP0343", .driver_data = 0 },
 943         { .id = "PNP0344", .driver_data = 0 },
 944         { .id = "PNP0345", .driver_data = 0 },
 945         { .id = "CPQA0D7", .driver_data = 0 },
 946         { .id = "", },
 947 };
 948 MODULE_DEVICE_TABLE(pnp, pnp_kbd_devids);
 949
 950 static struct pnp_driver i8042_pnp_kbd_driver = {
 951         .name           = "i8042 kbd",
 952         .id_table       = pnp_kbd_devids,
 953         .probe          = i8042_pnp_kbd_probe,
 954         .driver         = {
 955                 .probe_type = PROBE_FORCE_SYNCHRONOUS,
 956                 .suppress_bind_attrs = true,
 957         },
 958 };
 959
 960 static struct pnp_device_id pnp_aux_devids[] = {
 961         { .id = "AUI0200", .driver_data = 0 },
 962         { .id = "FJC6000", .driver_data = 0 },
 963         { .id = "FJC6001", .driver_data = 0 },
 964         { .id = "PNP0f03", .driver_data = 0 },
 965         { .id = "PNP0f0b", .driver_data = 0 },
 966         { .id = "PNP0f0e", .driver_data = 0 },
 967         { .id = "PNP0f12", .driver_data = 0 },
 968         { .id = "PNP0f13", .driver_data = 0 },
 969         { .id = "PNP0f19", .driver_data = 0 },
 970         { .id = "PNP0f1c", .driver_data = 0 },
 971         { .id = "SYN0801", .driver_data = 0 },
 972         { .id = "", },
 973 };
 974 MODULE_DEVICE_TABLE(pnp, pnp_aux_devids);
 975
 976 static struct pnp_driver i8042_pnp_aux_driver = {
 977         .name           = "i8042 aux",
 978         .id_table       = pnp_aux_devids,
 979         .probe          = i8042_pnp_aux_probe,
 980         .driver         = {
 981                 .probe_type = PROBE_FORCE_SYNCHRONOUS,
 982                 .suppress_bind_attrs = true,
 983         },
 984 };
 985
 986 static void i8042_pnp_exit(void)
 987 {
 988         if (i8042_pnp_kbd_registered) {
 989                 i8042_pnp_kbd_registered = false;
 990                 pnp_unregister_driver(&i8042_pnp_kbd_driver);
 991         }
 992
 993         if (i8042_pnp_aux_registered) {
 994                 i8042_pnp_aux_registered = false;
 995                 pnp_unregister_driver(&i8042_pnp_aux_driver);
 996         }
 997 }
 998
 999 static int __init i8042_pnp_init(void)
1000 {
1001         char kbd_irq_str[4] = { 0 }, aux_irq_str[4] = { 0 };
1002         bool pnp_data_busted = false;
1003         int err;
1004
1005 #ifdef CONFIG_X86
1006         if (dmi_check_system(i8042_dmi_nopnp_table))
1007                 i8042_nopnp = true;
1008 #endif
1009
1010         if (i8042_nopnp) {
1011                 pr_info("PNP detection disabled\n");
1012                 return 0;
1013         }
1014
1015         err = pnp_register_driver(&i8042_pnp_kbd_driver);
1016         if (!err)
1017                 i8042_pnp_kbd_registered = true;
1018
1019         err = pnp_register_driver(&i8042_pnp_aux_driver);
1020         if (!err)
1021                 i8042_pnp_aux_registered = true;
1022
1023         if (!i8042_pnp_kbd_devices && !i8042_pnp_aux_devices) {
1024                 i8042_pnp_exit();
1025 #if defined(__ia64__)
1026                 return -ENODEV;
1027 #else
1028                 pr_info("PNP: No PS/2 controller found.\n");
1029                 if (x86_platform.legacy.i8042 !=
1030                                 X86_LEGACY_I8042_EXPECTED_PRESENT)
1031                         return -ENODEV;
1032                 pr_info("Probing ports directly.\n");
1033                 return 0;
1034 #endif
1035         }
1036
1037         if (i8042_pnp_kbd_devices)
1038                 snprintf(kbd_irq_str, sizeof(kbd_irq_str),
1039                         "%d", i8042_pnp_kbd_irq);
1040         if (i8042_pnp_aux_devices)
1041                 snprintf(aux_irq_str, sizeof(aux_irq_str),
1042                         "%d", i8042_pnp_aux_irq);
1043
1044         pr_info("PNP: PS/2 Controller [%s%s%s] at %#x,%#x irq %s%s%s\n",
1045                 i8042_pnp_kbd_name, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
1046                 i8042_pnp_aux_name,
1047                 i8042_pnp_data_reg, i8042_pnp_command_reg,
1048                 kbd_irq_str, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
1049                 aux_irq_str);
1050
1051 #if defined(__ia64__)
1052         if (!i8042_pnp_kbd_devices)
1053                 i8042_nokbd = true;
1054         if (!i8042_pnp_aux_devices)
1055                 i8042_noaux = true;
1056 #endif
1057
1058         if (((i8042_pnp_data_reg & ~0xf) == (i8042_data_reg & ~0xf) &&
1059               i8042_pnp_data_reg != i8042_data_reg) ||
1060             !i8042_pnp_data_reg) {
1061                 pr_warn("PNP: PS/2 controller has invalid data port %#x; using default %#x\n",
1062                         i8042_pnp_data_reg, i8042_data_reg);
1063                 i8042_pnp_data_reg = i8042_data_reg;
1064                 pnp_data_busted = true;
1065         }
1066
1067         if (((i8042_pnp_command_reg & ~0xf) == (i8042_command_reg & ~0xf) &&
1068               i8042_pnp_command_reg != i8042_command_reg) ||
1069             !i8042_pnp_command_reg) {
1070                 pr_warn("PNP: PS/2 controller has invalid command port %#x; using default %#x\n",
1071                         i8042_pnp_command_reg, i8042_command_reg);
1072                 i8042_pnp_command_reg = i8042_command_reg;
1073                 pnp_data_busted = true;
1074         }
1075
1076         if (!i8042_nokbd && !i8042_pnp_kbd_irq) {
1077                 pr_warn("PNP: PS/2 controller doesn't have KBD irq; using default %d\n",
1078                         i8042_kbd_irq);
1079                 i8042_pnp_kbd_irq = i8042_kbd_irq;
1080                 pnp_data_busted = true;
1081         }
1082
1083         if (!i8042_noaux && !i8042_pnp_aux_irq) {
1084                 if (!pnp_data_busted && i8042_pnp_kbd_irq) {
1085                         pr_warn("PNP: PS/2 appears to have AUX port disabled, "
1086                                 "if this is incorrect please boot with i8042.nopnp\n");
1087                         i8042_noaux = true;
1088                 } else {
1089                         pr_warn("PNP: PS/2 controller doesn't have AUX irq; using default %d\n",
1090                                 i8042_aux_irq);
1091                         i8042_pnp_aux_irq = i8042_aux_irq;
1092                 }
1093         }
1094
1095         i8042_data_reg = i8042_pnp_data_reg;
1096         i8042_command_reg = i8042_pnp_command_reg;
1097         i8042_kbd_irq = i8042_pnp_kbd_irq;
1098         i8042_aux_irq = i8042_pnp_aux_irq;
1099
1100 #ifdef CONFIG_X86
1101         i8042_bypass_aux_irq_test = !pnp_data_busted &&
1102                                     dmi_check_system(i8042_dmi_laptop_table);
1103 #endif
1104
1105         return 0;
1106 }
1107
1108 #else  /* !CONFIG_PNP */
1109 static inline int i8042_pnp_init(void) { return 0; }
1110 static inline void i8042_pnp_exit(void) { }
1111 #endif /* CONFIG_PNP */
1112
1113 static int __init i8042_platform_init(void)
1114 {
1115         int retval;
1116
1117 #ifdef CONFIG_X86
1118         u8 a20_on = 0xdf;
1119         /* Just return if platform does not have i8042 controller */
1120         if (x86_platform.legacy.i8042 == X86_LEGACY_I8042_PLATFORM_ABSENT)
1121                 return -ENODEV;
1122 #endif
1123
1124 /*
1125  * On ix86 platforms touching the i8042 data register region can do really
1126  * bad things. Because of this the region is always reserved on ix86 boxes.
1127  *
1128  *      if (!request_region(I8042_DATA_REG, 16, "i8042"))
1129  *              return -EBUSY;
1130  */
1131
1132         i8042_kbd_irq = I8042_MAP_IRQ(1);
1133         i8042_aux_irq = I8042_MAP_IRQ(12);
1134
1135         retval = i8042_pnp_init();
1136         if (retval)
1137                 return retval;
1138
1139 #if defined(__ia64__)
1140         i8042_reset = I8042_RESET_ALWAYS;
1141 #endif
1142
1143 #ifdef CONFIG_X86
1144         /* Honor module parameter when value is not default */
1145         if (i8042_reset == I8042_RESET_DEFAULT) {
1146                 if (dmi_check_system(i8042_dmi_reset_table))
1147                         i8042_reset = I8042_RESET_ALWAYS;
1148
1149                 if (dmi_check_system(i8042_dmi_noselftest_table))
1150                         i8042_reset = I8042_RESET_NEVER;
1151         }
1152
1153         if (dmi_check_system(i8042_dmi_noloop_table))
1154                 i8042_noloop = true;
1155
1156         if (dmi_check_system(i8042_dmi_nomux_table))
1157                 i8042_nomux = true;
1158
1159         if (dmi_check_system(i8042_dmi_notimeout_table))
1160                 i8042_notimeout = true;
1161
1162         if (dmi_check_system(i8042_dmi_dritek_table))
1163                 i8042_dritek = true;
1164
1165         if (dmi_check_system(i8042_dmi_kbdreset_table))
1166                 i8042_kbdreset = true;
1167
1168         /*
1169          * A20 was already enabled during early kernel init. But some buggy
1170          * BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to
1171          * resume from S3. So we do it here and hope that nothing breaks.
1172          */
1173         i8042_command(&a20_on, 0x10d1);
1174         i8042_command(NULL, 0x00ff);    /* Null command for SMM firmware */
1175 #endif /* CONFIG_X86 */
1176
1177         return retval;
1178 }
1179
1180 static inline void i8042_platform_exit(void)
1181 {
1182         i8042_pnp_exit();
1183 }
1184
1185 #endif /* _I8042_X86IA64IO_H */