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                 /* OQO Model 01 */
 124                 .matches = {
 125                         DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
 126                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
 127                         DMI_MATCH(DMI_PRODUCT_VERSION, "00"),
 128                 },
 129         },
 130         {
 131                 /* ULI EV4873 - AUX LOOP does not work properly */
 132                 .matches = {
 133                         DMI_MATCH(DMI_SYS_VENDOR, "ULI"),
 134                         DMI_MATCH(DMI_PRODUCT_NAME, "EV4873"),
 135                         DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
 136                 },
 137         },
 138         {
 139                 /* Microsoft Virtual Machine */
 140                 .matches = {
 141                         DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 142                         DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
 143                         DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
 144                 },
 145         },
 146         {
 147                 /* Medion MAM 2070 */
 148                 .matches = {
 149                         DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
 150                         DMI_MATCH(DMI_PRODUCT_NAME, "MAM 2070"),
 151                         DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
 152                 },
 153         },
 154         {
 155                 /* Blue FB5601 */
 156                 .matches = {
 157                         DMI_MATCH(DMI_SYS_VENDOR, "blue"),
 158                         DMI_MATCH(DMI_PRODUCT_NAME, "FB5601"),
 159                         DMI_MATCH(DMI_PRODUCT_VERSION, "M606"),
 160                 },
 161         },
 162         {
 163                 /* Gigabyte M912 */
 164                 .matches = {
 165                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 166                         DMI_MATCH(DMI_PRODUCT_NAME, "M912"),
 167                         DMI_MATCH(DMI_PRODUCT_VERSION, "01"),
 168                 },
 169         },
 170         {
 171                 /* Gigabyte M1022M netbook */
 172                 .matches = {
 173                         DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co.,Ltd."),
 174                         DMI_MATCH(DMI_BOARD_NAME, "M1022E"),
 175                         DMI_MATCH(DMI_BOARD_VERSION, "1.02"),
 176                 },
 177         },
 178         {
 179                 /* Gigabyte Spring Peak - defines wrong chassis type */
 180                 .matches = {
 181                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 182                         DMI_MATCH(DMI_PRODUCT_NAME, "Spring Peak"),
 183                 },
 184         },
 185         {
 186                 /* Gigabyte T1005 - defines wrong chassis type ("Other") */
 187                 .matches = {
 188                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 189                         DMI_MATCH(DMI_PRODUCT_NAME, "T1005"),
 190                 },
 191         },
 192         {
 193                 /* Gigabyte T1005M/P - defines wrong chassis type ("Other") */
 194                 .matches = {
 195                         DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
 196                         DMI_MATCH(DMI_PRODUCT_NAME, "T1005M/P"),
 197                 },
 198         },
 199         {
 200                 .matches = {
 201                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 202                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv9700"),
 203                         DMI_MATCH(DMI_PRODUCT_VERSION, "Rev 1"),
 204                 },
 205         },
 206         { }
 207 };
 208
 209 /*
 210  * Some laptops do implement active multiplexing mode correctly;
 211  * unfortunately they are in minority.
 212  */
 213 static const struct dmi_system_id __initconst i8042_dmi_mux_table[] = {
 214         {
 215                 /*
 216                  * Panasonic CF-18 needs to be in MUX mode since the
 217                  * touchscreen is on serio3 and it also has touchpad.
 218                  */
 219                 .matches = {
 220                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
 221                 },
 222         },
 223         { }
 224 };
 225
 226 static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
 227         {
 228                 /* MSI Wind U-100 */
 229                 .matches = {
 230                         DMI_MATCH(DMI_BOARD_NAME, "U-100"),
 231                         DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
 232                 },
 233         },
 234         {
 235                 /* LG Electronics X110 */
 236                 .matches = {
 237                         DMI_MATCH(DMI_BOARD_NAME, "X110"),
 238                         DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."),
 239                 },
 240         },
 241         {
 242                 /* Acer Aspire One 150 */
 243                 .matches = {
 244                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 245                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 246                 },
 247         },
 248         {
 249                 /* Advent 4211 */
 250                 .matches = {
 251                         DMI_MATCH(DMI_SYS_VENDOR, "DIXONSXP"),
 252                         DMI_MATCH(DMI_PRODUCT_NAME, "Advent 4211"),
 253                 },
 254         },
 255         {
 256                 /* Medion Akoya Mini E1210 */
 257                 .matches = {
 258                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 259                         DMI_MATCH(DMI_PRODUCT_NAME, "E1210"),
 260                 },
 261         },
 262         {
 263                 /* Medion Akoya E1222 */
 264                 .matches = {
 265                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 266                         DMI_MATCH(DMI_PRODUCT_NAME, "E122X"),
 267                 },
 268         },
 269         {
 270                 /* Mivvy M310 */
 271                 .matches = {
 272                         DMI_MATCH(DMI_SYS_VENDOR, "VIOOO"),
 273                         DMI_MATCH(DMI_PRODUCT_NAME, "N10"),
 274                 },
 275         },
 276         {
 277                 /* Dell Vostro 1320 */
 278                 .matches = {
 279                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 280                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1320"),
 281                 },
 282         },
 283         {
 284                 /* Dell Vostro 1520 */
 285                 .matches = {
 286                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 287                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1520"),
 288                 },
 289         },
 290         {
 291                 /* Dell Vostro 1720 */
 292                 .matches = {
 293                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 294                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"),
 295                 },
 296         },
 297         {
 298                 /* Lenovo Ideapad U455 */
 299                 .matches = {
 300                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 301                         DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
 302                 },
 303         },
 304         { }
 305 };
 306
 307 #ifdef CONFIG_PNP
 308 static const struct dmi_system_id __initconst i8042_dmi_nopnp_table[] = {
 309         {
 310                 /* Intel MBO Desktop D845PESV */
 311                 .matches = {
 312                         DMI_MATCH(DMI_BOARD_NAME, "D845PESV"),
 313                         DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
 314                 },
 315         },
 316         {
 317                 /* MSI Wind U-100 */
 318                 .matches = {
 319                         DMI_MATCH(DMI_BOARD_NAME, "U-100"),
 320                         DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
 321                 },
 322         },
 323         { }
 324 };
 325
 326 static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = {
 327         {
 328                 .matches = {
 329                         DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
 330                 },
 331         },
 332         {
 333                 .matches = {
 334                         DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */
 335                 },
 336         },
 337         {
 338                 .matches = {
 339                         DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
 340                 },
 341         },
 342         {
 343                 .matches = {
 344                         DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */
 345                 },
 346         },
 347         { }
 348 };
 349 #endif
 350
 351 static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
 352         {
 353                 /* Dell Vostro V13 */
 354                 .matches = {
 355                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 356                         DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
 357                 },
 358         },
 359         {
 360                 /* Newer HP Pavilion dv4 models */
 361                 .matches = {
 362                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 363                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
 364                 },
 365         },
 366         {
 367                 /* Fujitsu U574 laptop */
 368                 /* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
 369                 .matches = {
 370                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 371                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
 372                 },
 373         },
 374         { }
 375 };
 376
 377 /*
 378  * Some Wistron based laptops need us to explicitly enable the 'Dritek
 379  * keyboard extension' to make their extra keys start generating scancodes.
 380  * Originally, this was just confined to older laptops, but a few Acer laptops
 381  * have turned up in 2007 that also need this again.
 382  */
 383 static const struct dmi_system_id __initconst i8042_dmi_dritek_table[] = {
 384         {
 385                 /* Acer Aspire 5100 */
 386                 .matches = {
 387                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 388                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 389                 },
 390         },
 391         {
 392                 /* Acer Aspire 5610 */
 393                 .matches = {
 394                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 395                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 396                 },
 397         },
 398         {
 399                 /* Acer Aspire 5630 */
 400                 .matches = {
 401                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 402                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 403                 },
 404         },
 405         {
 406                 /* Acer Aspire 5650 */
 407                 .matches = {
 408                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 409                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 410                 },
 411         },
 412         {
 413                 /* Acer Aspire 5680 */
 414                 .matches = {
 415                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 416                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 417                 },
 418         },
 419         {
 420                 /* Acer Aspire 5720 */
 421                 .matches = {
 422                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 423                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
 424                 },
 425         },
 426         {
 427                 /* Acer Aspire 9110 */
 428                 .matches = {
 429                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 430                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 431                 },
 432         },
 433         {
 434                 /* Acer TravelMate 660 */
 435                 .matches = {
 436                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 437                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 660"),
 438                 },
 439         },
 440         {
 441                 /* Acer TravelMate 2490 */
 442                 .matches = {
 443                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 444                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 445                 },
 446         },
 447         {
 448                 /* Acer TravelMate 4280 */
 449                 .matches = {
 450                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 451                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4280"),
 452                 },
 453         },
 454         { }
 455 };
 456
 457 #endif /* CONFIG_X86 */
 458
 459 #ifdef CONFIG_PNP
 460 #include <linux/pnp.h>
 461
 462 static bool i8042_pnp_kbd_registered;
 463 static unsigned int i8042_pnp_kbd_devices;
 464 static bool i8042_pnp_aux_registered;
 465 static unsigned int i8042_pnp_aux_devices;
 466
 467 static int i8042_pnp_command_reg;
 468 static int i8042_pnp_data_reg;
 469 static int i8042_pnp_kbd_irq;
 470 static int i8042_pnp_aux_irq;
 471
 472 static char i8042_pnp_kbd_name[32];
 473 static char i8042_pnp_aux_name[32];
 474
 475 static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size)
 476 {
 477         strlcpy(dst, "PNP:", dst_size);
 478
 479         while (id) {
 480                 strlcat(dst, " ", dst_size);
 481                 strlcat(dst, id->id, dst_size);
 482                 id = id->next;
 483         }
 484 }
 485
 486 static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
 487 {
 488         if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
 489                 i8042_pnp_data_reg = pnp_port_start(dev,0);
 490
 491         if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
 492                 i8042_pnp_command_reg = pnp_port_start(dev, 1);
 493
 494         if (pnp_irq_valid(dev,0))
 495                 i8042_pnp_kbd_irq = pnp_irq(dev, 0);
 496
 497         strlcpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name));
 498         if (strlen(pnp_dev_name(dev))) {
 499                 strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name));
 500                 strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name));
 501         }
 502         i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id,
 503                                sizeof(i8042_kbd_firmware_id));
 504
 505         /* Keyboard ports are always supposed to be wakeup-enabled */
 506         device_set_wakeup_enable(&dev->dev, true);
 507
 508         i8042_pnp_kbd_devices++;
 509         return 0;
 510 }
 511
 512 static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
 513 {
 514         if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
 515                 i8042_pnp_data_reg = pnp_port_start(dev,0);
 516
 517         if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
 518                 i8042_pnp_command_reg = pnp_port_start(dev, 1);
 519
 520         if (pnp_irq_valid(dev, 0))
 521                 i8042_pnp_aux_irq = pnp_irq(dev, 0);
 522
 523         strlcpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name));
 524         if (strlen(pnp_dev_name(dev))) {
 525                 strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name));
 526                 strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name));
 527         }
 528         i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id,
 529                                sizeof(i8042_aux_firmware_id));
 530
 531         i8042_pnp_aux_devices++;
 532         return 0;
 533 }
 534
 535 static struct pnp_device_id pnp_kbd_devids[] = {
 536         { .id = "PNP0300", .driver_data = 0 },
 537         { .id = "PNP0301", .driver_data = 0 },
 538         { .id = "PNP0302", .driver_data = 0 },
 539         { .id = "PNP0303", .driver_data = 0 },
 540         { .id = "PNP0304", .driver_data = 0 },
 541         { .id = "PNP0305", .driver_data = 0 },
 542         { .id = "PNP0306", .driver_data = 0 },
 543         { .id = "PNP0309", .driver_data = 0 },
 544         { .id = "PNP030a", .driver_data = 0 },
 545         { .id = "PNP030b", .driver_data = 0 },
 546         { .id = "PNP0320", .driver_data = 0 },
 547         { .id = "PNP0343", .driver_data = 0 },
 548         { .id = "PNP0344", .driver_data = 0 },
 549         { .id = "PNP0345", .driver_data = 0 },
 550         { .id = "CPQA0D7", .driver_data = 0 },
 551         { .id = "", },
 552 };
 553 MODULE_DEVICE_TABLE(pnp, pnp_kbd_devids);
 554
 555 static struct pnp_driver i8042_pnp_kbd_driver = {
 556         .name           = "i8042 kbd",
 557         .id_table       = pnp_kbd_devids,
 558         .probe          = i8042_pnp_kbd_probe,
 559 };
 560
 561 static struct pnp_device_id pnp_aux_devids[] = {
 562         { .id = "AUI0200", .driver_data = 0 },
 563         { .id = "FJC6000", .driver_data = 0 },
 564         { .id = "FJC6001", .driver_data = 0 },
 565         { .id = "PNP0f03", .driver_data = 0 },
 566         { .id = "PNP0f0b", .driver_data = 0 },
 567         { .id = "PNP0f0e", .driver_data = 0 },
 568         { .id = "PNP0f12", .driver_data = 0 },
 569         { .id = "PNP0f13", .driver_data = 0 },
 570         { .id = "PNP0f19", .driver_data = 0 },
 571         { .id = "PNP0f1c", .driver_data = 0 },
 572         { .id = "SYN0801", .driver_data = 0 },
 573         { .id = "", },
 574 };
 575 MODULE_DEVICE_TABLE(pnp, pnp_aux_devids);
 576
 577 static struct pnp_driver i8042_pnp_aux_driver = {
 578         .name           = "i8042 aux",
 579         .id_table       = pnp_aux_devids,
 580         .probe          = i8042_pnp_aux_probe,
 581 };
 582
 583 static void i8042_pnp_exit(void)
 584 {
 585         if (i8042_pnp_kbd_registered) {
 586                 i8042_pnp_kbd_registered = false;
 587                 pnp_unregister_driver(&i8042_pnp_kbd_driver);
 588         }
 589
 590         if (i8042_pnp_aux_registered) {
 591                 i8042_pnp_aux_registered = false;
 592                 pnp_unregister_driver(&i8042_pnp_aux_driver);
 593         }
 594 }
 595
 596 static int __init i8042_pnp_init(void)
 597 {
 598         char kbd_irq_str[4] = { 0 }, aux_irq_str[4] = { 0 };
 599         bool pnp_data_busted = false;
 600         int err;
 601
 602 #ifdef CONFIG_X86
 603         if (dmi_check_system(i8042_dmi_nopnp_table))
 604                 i8042_nopnp = true;
 605 #endif
 606
 607         if (i8042_nopnp) {
 608                 pr_info("PNP detection disabled\n");
 609                 return 0;
 610         }
 611
 612         err = pnp_register_driver(&i8042_pnp_kbd_driver);
 613         if (!err)
 614                 i8042_pnp_kbd_registered = true;
 615
 616         err = pnp_register_driver(&i8042_pnp_aux_driver);
 617         if (!err)
 618                 i8042_pnp_aux_registered = true;
 619
 620         if (!i8042_pnp_kbd_devices && !i8042_pnp_aux_devices) {
 621                 i8042_pnp_exit();
 622 #if defined(__ia64__)
 623                 return -ENODEV;
 624 #else
 625                 pr_info("PNP: No PS/2 controller found. Probing ports directly.\n");
 626                 return 0;
 627 #endif
 628         }
 629
 630         if (i8042_pnp_kbd_devices)
 631                 snprintf(kbd_irq_str, sizeof(kbd_irq_str),
 632                         "%d", i8042_pnp_kbd_irq);
 633         if (i8042_pnp_aux_devices)
 634                 snprintf(aux_irq_str, sizeof(aux_irq_str),
 635                         "%d", i8042_pnp_aux_irq);
 636
 637         pr_info("PNP: PS/2 Controller [%s%s%s] at %#x,%#x irq %s%s%s\n",
 638                 i8042_pnp_kbd_name, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
 639                 i8042_pnp_aux_name,
 640                 i8042_pnp_data_reg, i8042_pnp_command_reg,
 641                 kbd_irq_str, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
 642                 aux_irq_str);
 643
 644 #if defined(__ia64__)
 645         if (!i8042_pnp_kbd_devices)
 646                 i8042_nokbd = true;
 647         if (!i8042_pnp_aux_devices)
 648                 i8042_noaux = true;
 649 #endif
 650
 651         if (((i8042_pnp_data_reg & ~0xf) == (i8042_data_reg & ~0xf) &&
 652               i8042_pnp_data_reg != i8042_data_reg) ||
 653             !i8042_pnp_data_reg) {
 654                 pr_warn("PNP: PS/2 controller has invalid data port %#x; using default %#x\n",
 655                         i8042_pnp_data_reg, i8042_data_reg);
 656                 i8042_pnp_data_reg = i8042_data_reg;
 657                 pnp_data_busted = true;
 658         }
 659
 660         if (((i8042_pnp_command_reg & ~0xf) == (i8042_command_reg & ~0xf) &&
 661               i8042_pnp_command_reg != i8042_command_reg) ||
 662             !i8042_pnp_command_reg) {
 663                 pr_warn("PNP: PS/2 controller has invalid command port %#x; using default %#x\n",
 664                         i8042_pnp_command_reg, i8042_command_reg);
 665                 i8042_pnp_command_reg = i8042_command_reg;
 666                 pnp_data_busted = true;
 667         }
 668
 669         if (!i8042_nokbd && !i8042_pnp_kbd_irq) {
 670                 pr_warn("PNP: PS/2 controller doesn't have KBD irq; using default %d\n",
 671                         i8042_kbd_irq);
 672                 i8042_pnp_kbd_irq = i8042_kbd_irq;
 673                 pnp_data_busted = true;
 674         }
 675
 676         if (!i8042_noaux && !i8042_pnp_aux_irq) {
 677                 if (!pnp_data_busted && i8042_pnp_kbd_irq) {
 678                         pr_warn("PNP: PS/2 appears to have AUX port disabled, "
 679                                 "if this is incorrect please boot with i8042.nopnp\n");
 680                         i8042_noaux = true;
 681                 } else {
 682                         pr_warn("PNP: PS/2 controller doesn't have AUX irq; using default %d\n",
 683                                 i8042_aux_irq);
 684                         i8042_pnp_aux_irq = i8042_aux_irq;
 685                 }
 686         }
 687
 688         i8042_data_reg = i8042_pnp_data_reg;
 689         i8042_command_reg = i8042_pnp_command_reg;
 690         i8042_kbd_irq = i8042_pnp_kbd_irq;
 691         i8042_aux_irq = i8042_pnp_aux_irq;
 692
 693 #ifdef CONFIG_X86
 694         i8042_bypass_aux_irq_test = !pnp_data_busted &&
 695                                     dmi_check_system(i8042_dmi_laptop_table);
 696 #endif
 697
 698         return 0;
 699 }
 700
 701 #else
 702 static inline int i8042_pnp_init(void) { return 0; }
 703 static inline void i8042_pnp_exit(void) { }
 704 #endif
 705
 706 static int __init i8042_platform_init(void)
 707 {
 708         int retval;
 709
 710 #ifdef CONFIG_X86
 711         u8 a20_on = 0xdf;
 712         /* Just return if pre-detection shows no i8042 controller exist */
 713         if (!x86_platform.i8042_detect())
 714                 return -ENODEV;
 715 #endif
 716
 717 /*
 718  * On ix86 platforms touching the i8042 data register region can do really
 719  * bad things. Because of this the region is always reserved on ix86 boxes.
 720  *
 721  *      if (!request_region(I8042_DATA_REG, 16, "i8042"))
 722  *              return -EBUSY;
 723  */
 724
 725         i8042_kbd_irq = I8042_MAP_IRQ(1);
 726         i8042_aux_irq = I8042_MAP_IRQ(12);
 727
 728         retval = i8042_pnp_init();
 729         if (retval)
 730                 return retval;
 731
 732 #if defined(__ia64__)
 733         i8042_reset = true;
 734 #endif
 735
 736 #ifdef CONFIG_X86
 737         if (dmi_check_system(i8042_dmi_reset_table))
 738                 i8042_reset = true;
 739
 740         if (dmi_check_system(i8042_dmi_noloop_table))
 741                 i8042_noloop = true;
 742
 743         if (dmi_check_system(i8042_dmi_mux_table))
 744                 i8042_nomux = false;
 745
 746         if (dmi_check_system(i8042_dmi_notimeout_table))
 747                 i8042_notimeout = true;
 748
 749         if (dmi_check_system(i8042_dmi_dritek_table))
 750                 i8042_dritek = true;
 751
 752         /*
 753          * A20 was already enabled during early kernel init. But some buggy
 754          * BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to
 755          * resume from S3. So we do it here and hope that nothing breaks.
 756          */
 757         i8042_command(&a20_on, 0x10d1);
 758         i8042_command(NULL, 0x00ff);    /* Null command for SMM firmware */
 759 #endif /* CONFIG_X86 */
 760
 761         return retval;
 762 }
 763
 764 static inline void i8042_platform_exit(void)
 765 {
 766         i8042_pnp_exit();
 767 }
 768
 769 #endif /* _I8042_X86IA64IO_H */