drivers/misc/thinkpad_acpi.c

   1 /*
   2  *  thinkpad_acpi.c - ThinkPad ACPI Extras
   3  *
   4  *
   5  *  Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
   6  *  Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21  *  02110-1301, USA.
  22  */
  23
  24 #define IBM_VERSION "0.16"
  25 #define TPACPI_SYSFS_VERSION 0x010000
  26
  27 /*
  28  *  Changelog:
  29  *  2007-03-27  0.14    renamed to thinkpad_acpi and moved to
  30  *                      drivers/misc.
  31  *
  32  *  2006-11-22  0.13    new maintainer
  33  *                      changelog now lives in git commit history, and will
  34  *                      not be updated further in-file.
  35  *
  36  *  2005-08-17  0.12    fix compilation on 2.6.13-rc kernels
  37  *  2005-03-17  0.11    support for 600e, 770x
  38  *                          thanks to Jamie Lentin <lentinj@dial.pipex.com>
  39  *                      support for 770e, G41
  40  *                      G40 and G41 don't have a thinklight
  41  *                      temperatures no longer experimental
  42  *                      experimental brightness control
  43  *                      experimental volume control
  44  *                      experimental fan enable/disable
  45  *  2005-01-16  0.10    fix module loading on R30, R31
  46  *  2005-01-16  0.9     support for 570, R30, R31
  47  *                      ultrabay support on A22p, A3x
  48  *                      limit arg for cmos, led, beep, drop experimental status
  49  *                      more capable led control on A21e, A22p, T20-22, X20
  50  *                      experimental temperatures and fan speed
  51  *                      experimental embedded controller register dump
  52  *                      mark more functions as __init, drop incorrect __exit
  53  *                      use MODULE_VERSION
  54  *                          thanks to Henrik Brix Andersen <brix@gentoo.org>
  55  *                      fix parameter passing on module loading
  56  *                          thanks to Rusty Russell <rusty@rustcorp.com.au>
  57  *                          thanks to Jim Radford <radford@blackbean.org>
  58  *  2004-11-08  0.8     fix init error case, don't return from a macro
  59  *                          thanks to Chris Wright <chrisw@osdl.org>
  60  *  2004-10-23  0.7     fix module loading on A21e, A22p, T20, T21, X20
  61  *                      fix led control on A21e
  62  *  2004-10-19  0.6     use acpi_bus_register_driver() to claim HKEY device
  63  *  2004-10-18  0.5     thinklight support on A21e, G40, R32, T20, T21, X20
  64  *                      proc file format changed
  65  *                      video_switch command
  66  *                      experimental cmos control
  67  *                      experimental led control
  68  *                      experimental acpi sounds
  69  *  2004-09-16  0.4     support for module parameters
  70  *                      hotkey mask can be prefixed by 0x
  71  *                      video output switching
  72  *                      video expansion control
  73  *                      ultrabay eject support
  74  *                      removed lcd brightness/on/off control, didn't work
  75  *  2004-08-17  0.3     support for R40
  76  *                      lcd off, brightness control
  77  *                      thinklight on/off
  78  *  2004-08-14  0.2     support for T series, X20
  79  *                      bluetooth enable/disable
  80  *                      hotkey events disabled by default
  81  *                      removed fan control, currently useless
  82  *  2004-08-09  0.1     initial release, support for X series
  83  */
  84
  85 #include "thinkpad_acpi.h"
  86
  87 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
  88 MODULE_DESCRIPTION(IBM_DESC);
  89 MODULE_VERSION(IBM_VERSION);
  90 MODULE_LICENSE("GPL");
  91
  92 /* Please remove this in year 2009 */
  93 MODULE_ALIAS("ibm_acpi");
  94
  95 /*
  96  * DMI matching for module autoloading
  97  *
  98  * See http://thinkwiki.org/wiki/List_of_DMI_IDs
  99  * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
 100  *
 101  * Only models listed in thinkwiki will be supported, so add yours
 102  * if it is not there yet.
 103  */
 104 #define IBM_BIOS_MODULE_ALIAS(__type) \
 105         MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
 106
 107 /* Non-ancient thinkpads */
 108 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
 109 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
 110
 111 /* Ancient thinkpad BIOSes have to be identified by
 112  * BIOS type or model number, and there are far less
 113  * BIOS types than model numbers... */
 114 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
 115 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
 116 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
 117
 118 #define __unused __attribute__ ((unused))
 119
 120 /****************************************************************************
 121  ****************************************************************************
 122  *
 123  * ACPI Helpers and device model
 124  *
 125  ****************************************************************************
 126  ****************************************************************************/
 127
 128 /*************************************************************************
 129  * ACPI basic handles
 130  */
 131
 132 static acpi_handle root_handle;
 133
 134 #define IBM_HANDLE(object, parent, paths...)                    \
 135         static acpi_handle  object##_handle;                    \
 136         static acpi_handle *object##_parent = &parent##_handle; \
 137         static char        *object##_path;                      \
 138         static char        *object##_paths[] = { paths }
 139
 140 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0",      /* 240, 240x */
 141            "\\_SB.PCI.ISA.EC",  /* 570 */
 142            "\\_SB.PCI0.ISA0.EC0",       /* 600e/x, 770e, 770x */
 143            "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
 144            "\\_SB.PCI0.AD4S.EC0",       /* i1400, R30 */
 145            "\\_SB.PCI0.ICH3.EC0",       /* R31 */
 146            "\\_SB.PCI0.LPC.EC", /* all others */
 147            );
 148
 149 IBM_HANDLE(ecrd, ec, "ECRD");   /* 570 */
 150 IBM_HANDLE(ecwr, ec, "ECWR");   /* 570 */
 151
 152
 153 /*************************************************************************
 154  * Misc ACPI handles
 155  */
 156
 157 IBM_HANDLE(cmos, root, "\\UCMS",        /* R50, R50e, R50p, R51, T4x, X31, X40 */
 158            "\\CMOS",            /* A3x, G4x, R32, T23, T30, X22-24, X30 */
 159            "\\CMS",             /* R40, R40e */
 160            );                   /* all others */
 161
 162 IBM_HANDLE(hkey, ec, "\\_SB.HKEY",      /* 600e/x, 770e, 770x */
 163            "^HKEY",             /* R30, R31 */
 164            "HKEY",              /* all others */
 165            );                   /* 570 */
 166
 167
 168 /*************************************************************************
 169  * ACPI helpers
 170  */
 171
 172 static int acpi_evalf(acpi_handle handle,
 173                       void *res, char *method, char *fmt, ...)
 174 {
 175         char *fmt0 = fmt;
 176         struct acpi_object_list params;
 177         union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
 178         struct acpi_buffer result, *resultp;
 179         union acpi_object out_obj;
 180         acpi_status status;
 181         va_list ap;
 182         char res_type;
 183         int success;
 184         int quiet;
 185
 186         if (!*fmt) {
 187                 printk(IBM_ERR "acpi_evalf() called with empty format\n");
 188                 return 0;
 189         }
 190
 191         if (*fmt == 'q') {
 192                 quiet = 1;
 193                 fmt++;
 194         } else
 195                 quiet = 0;
 196
 197         res_type = *(fmt++);
 198
 199         params.count = 0;
 200         params.pointer = &in_objs[0];
 201
 202         va_start(ap, fmt);
 203         while (*fmt) {
 204                 char c = *(fmt++);
 205                 switch (c) {
 206                 case 'd':       /* int */
 207                         in_objs[params.count].integer.value = va_arg(ap, int);
 208                         in_objs[params.count++].type = ACPI_TYPE_INTEGER;
 209                         break;
 210                         /* add more types as needed */
 211                 default:
 212                         printk(IBM_ERR "acpi_evalf() called "
 213                                "with invalid format character '%c'\n", c);
 214                         return 0;
 215                 }
 216         }
 217         va_end(ap);
 218
 219         if (res_type != 'v') {
 220                 result.length = sizeof(out_obj);
 221                 result.pointer = &out_obj;
 222                 resultp = &result;
 223         } else
 224                 resultp = NULL;
 225
 226         status = acpi_evaluate_object(handle, method, &params, resultp);
 227
 228         switch (res_type) {
 229         case 'd':               /* int */
 230                 if (res)
 231                         *(int *)res = out_obj.integer.value;
 232                 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
 233                 break;
 234         case 'v':               /* void */
 235                 success = status == AE_OK;
 236                 break;
 237                 /* add more types as needed */
 238         default:
 239                 printk(IBM_ERR "acpi_evalf() called "
 240                        "with invalid format character '%c'\n", res_type);
 241                 return 0;
 242         }
 243
 244         if (!success && !quiet)
 245                 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
 246                        method, fmt0, status);
 247
 248         return success;
 249 }
 250
 251 static void __unused acpi_print_int(acpi_handle handle, char *method)
 252 {
 253         int i;
 254
 255         if (acpi_evalf(handle, &i, method, "d"))
 256                 printk(IBM_INFO "%s = 0x%x\n", method, i);
 257         else
 258                 printk(IBM_ERR "error calling %s\n", method);
 259 }
 260
 261 static int acpi_ec_read(int i, u8 * p)
 262 {
 263         int v;
 264
 265         if (ecrd_handle) {
 266                 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
 267                         return 0;
 268                 *p = v;
 269         } else {
 270                 if (ec_read(i, p) < 0)
 271                         return 0;
 272         }
 273
 274         return 1;
 275 }
 276
 277 static int acpi_ec_write(int i, u8 v)
 278 {
 279         if (ecwr_handle) {
 280                 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
 281                         return 0;
 282         } else {
 283                 if (ec_write(i, v) < 0)
 284                         return 0;
 285         }
 286
 287         return 1;
 288 }
 289
 290 static int _sta(acpi_handle handle)
 291 {
 292         int status;
 293
 294         if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
 295                 status = 0;
 296
 297         return status;
 298 }
 299
 300 static int issue_thinkpad_cmos_command(int cmos_cmd)
 301 {
 302         if (!cmos_handle)
 303                 return -ENXIO;
 304
 305         if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
 306                 return -EIO;
 307
 308         return 0;
 309 }
 310
 311 /*************************************************************************
 312  * ACPI device model
 313  */
 314
 315 static void drv_acpi_handle_init(char *name,
 316                            acpi_handle *handle, acpi_handle parent,
 317                            char **paths, int num_paths, char **path)
 318 {
 319         int i;
 320         acpi_status status;
 321
 322         vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
 323                 name);
 324
 325         for (i = 0; i < num_paths; i++) {
 326                 status = acpi_get_handle(parent, paths[i], handle);
 327                 if (ACPI_SUCCESS(status)) {
 328                         *path = paths[i];
 329                         dbg_printk(TPACPI_DBG_INIT,
 330                                    "Found ACPI handle %s for %s\n",
 331                                    *path, name);
 332                         return;
 333                 }
 334         }
 335
 336         vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
 337                     name);
 338         *handle = NULL;
 339 }
 340
 341 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
 342 {
 343         struct ibm_struct *ibm = data;
 344
 345         if (!ibm || !ibm->acpi || !ibm->acpi->notify)
 346                 return;
 347
 348         ibm->acpi->notify(ibm, event);
 349 }
 350
 351 static int __init setup_acpi_notify(struct ibm_struct *ibm)
 352 {
 353         acpi_status status;
 354         int rc;
 355
 356         BUG_ON(!ibm->acpi);
 357
 358         if (!*ibm->acpi->handle)
 359                 return 0;
 360
 361         vdbg_printk(TPACPI_DBG_INIT,
 362                 "setting up ACPI notify for %s\n", ibm->name);
 363
 364         rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
 365         if (rc < 0) {
 366                 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
 367                         ibm->name, rc);
 368                 return -ENODEV;
 369         }
 370
 371         acpi_driver_data(ibm->acpi->device) = ibm;
 372         sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
 373                 IBM_ACPI_EVENT_PREFIX,
 374                 ibm->name);
 375
 376         status = acpi_install_notify_handler(*ibm->acpi->handle,
 377                         ibm->acpi->type, dispatch_acpi_notify, ibm);
 378         if (ACPI_FAILURE(status)) {
 379                 if (status == AE_ALREADY_EXISTS) {
 380                         printk(IBM_NOTICE "another device driver is already handling %s events\n",
 381                                 ibm->name);
 382                 } else {
 383                         printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
 384                                 ibm->name, status);
 385                 }
 386                 return -ENODEV;
 387         }
 388         ibm->flags.acpi_notify_installed = 1;
 389         return 0;
 390 }
 391
 392 static int __init tpacpi_device_add(struct acpi_device *device)
 393 {
 394         return 0;
 395 }
 396
 397 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
 398 {
 399         int rc;
 400
 401         dbg_printk(TPACPI_DBG_INIT,
 402                 "registering %s as an ACPI driver\n", ibm->name);
 403
 404         BUG_ON(!ibm->acpi);
 405
 406         ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
 407         if (!ibm->acpi->driver) {
 408                 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
 409                 return -ENOMEM;
 410         }
 411
 412         sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
 413         ibm->acpi->driver->ids = ibm->acpi->hid;
 414
 415         ibm->acpi->driver->ops.add = &tpacpi_device_add;
 416
 417         rc = acpi_bus_register_driver(ibm->acpi->driver);
 418         if (rc < 0) {
 419                 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
 420                        ibm->name, rc);
 421                 kfree(ibm->acpi->driver);
 422                 ibm->acpi->driver = NULL;
 423         } else if (!rc)
 424                 ibm->flags.acpi_driver_registered = 1;
 425
 426         return rc;
 427 }
 428
 429
 430 /****************************************************************************
 431  ****************************************************************************
 432  *
 433  * Procfs Helpers
 434  *
 435  ****************************************************************************
 436  ****************************************************************************/
 437
 438 static int dispatch_procfs_read(char *page, char **start, off_t off,
 439                         int count, int *eof, void *data)
 440 {
 441         struct ibm_struct *ibm = data;
 442         int len;
 443
 444         if (!ibm || !ibm->read)
 445                 return -EINVAL;
 446
 447         len = ibm->read(page);
 448         if (len < 0)
 449                 return len;
 450
 451         if (len <= off + count)
 452                 *eof = 1;
 453         *start = page + off;
 454         len -= off;
 455         if (len > count)
 456                 len = count;
 457         if (len < 0)
 458                 len = 0;
 459
 460         return len;
 461 }
 462
 463 static int dispatch_procfs_write(struct file *file,
 464                         const char __user * userbuf,
 465                         unsigned long count, void *data)
 466 {
 467         struct ibm_struct *ibm = data;
 468         char *kernbuf;
 469         int ret;
 470
 471         if (!ibm || !ibm->write)
 472                 return -EINVAL;
 473
 474         kernbuf = kmalloc(count + 2, GFP_KERNEL);
 475         if (!kernbuf)
 476                 return -ENOMEM;
 477
 478         if (copy_from_user(kernbuf, userbuf, count)) {
 479                 kfree(kernbuf);
 480                 return -EFAULT;
 481         }
 482
 483         kernbuf[count] = 0;
 484         strcat(kernbuf, ",");
 485         ret = ibm->write(kernbuf);
 486         if (ret == 0)
 487                 ret = count;
 488
 489         kfree(kernbuf);
 490
 491         return ret;
 492 }
 493
 494 static char *next_cmd(char **cmds)
 495 {
 496         char *start = *cmds;
 497         char *end;
 498
 499         while ((end = strchr(start, ',')) && end == start)
 500                 start = end + 1;
 501
 502         if (!end)
 503                 return NULL;
 504
 505         *end = 0;
 506         *cmds = end + 1;
 507         return start;
 508 }
 509
 510
 511 /****************************************************************************
 512  ****************************************************************************
 513  *
 514  * Device model: input, hwmon and platform
 515  *
 516  ****************************************************************************
 517  ****************************************************************************/
 518
 519 static struct platform_device *tpacpi_pdev;
 520 static struct class_device *tpacpi_hwmon;
 521 static struct input_dev *tpacpi_inputdev;
 522
 523
 524 static int tpacpi_resume_handler(struct platform_device *pdev)
 525 {
 526         struct ibm_struct *ibm, *itmp;
 527
 528         list_for_each_entry_safe(ibm, itmp,
 529                                  &tpacpi_all_drivers,
 530                                  all_drivers) {
 531                 if (ibm->resume)
 532                         (ibm->resume)();
 533         }
 534
 535         return 0;
 536 }
 537
 538 static struct platform_driver tpacpi_pdriver = {
 539         .driver = {
 540                 .name = IBM_DRVR_NAME,
 541                 .owner = THIS_MODULE,
 542         },
 543         .resume = tpacpi_resume_handler,
 544 };
 545
 546
 547 /*************************************************************************
 548  * thinkpad-acpi driver attributes
 549  */
 550
 551 /* interface_version --------------------------------------------------- */
 552 static ssize_t tpacpi_driver_interface_version_show(
 553                                 struct device_driver *drv,
 554                                 char *buf)
 555 {
 556         return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
 557 }
 558
 559 static DRIVER_ATTR(interface_version, S_IRUGO,
 560                 tpacpi_driver_interface_version_show, NULL);
 561
 562 /* debug_level --------------------------------------------------------- */
 563 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
 564                                                 char *buf)
 565 {
 566         return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
 567 }
 568
 569 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
 570                                                 const char *buf, size_t count)
 571 {
 572         unsigned long t;
 573
 574         if (parse_strtoul(buf, 0xffff, &t))
 575                 return -EINVAL;
 576
 577         dbg_level = t;
 578
 579         return count;
 580 }
 581
 582 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
 583                 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
 584
 585 /* version ------------------------------------------------------------- */
 586 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
 587                                                 char *buf)
 588 {
 589         return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
 590 }
 591
 592 static DRIVER_ATTR(version, S_IRUGO,
 593                 tpacpi_driver_version_show, NULL);
 594
 595 /* --------------------------------------------------------------------- */
 596
 597 static struct driver_attribute* tpacpi_driver_attributes[] = {
 598         &driver_attr_debug_level, &driver_attr_version,
 599         &driver_attr_interface_version,
 600 };
 601
 602 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
 603 {
 604         int i, res;
 605
 606         i = 0;
 607         res = 0;
 608         while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
 609                 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
 610                 i++;
 611         }
 612
 613         return res;
 614 }
 615
 616 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
 617 {
 618         int i;
 619
 620         for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
 621                 driver_remove_file(drv, tpacpi_driver_attributes[i]);
 622 }
 623
 624 /*************************************************************************
 625  * sysfs support helpers
 626  */
 627
 628 struct attribute_set_obj {
 629         struct attribute_set s;
 630         struct attribute *a;
 631 } __attribute__((packed));
 632
 633 static struct attribute_set *create_attr_set(unsigned int max_members,
 634                                                 const char* name)
 635 {
 636         struct attribute_set_obj *sobj;
 637
 638         if (max_members == 0)
 639                 return NULL;
 640
 641         /* Allocates space for implicit NULL at the end too */
 642         sobj = kzalloc(sizeof(struct attribute_set_obj) +
 643                     max_members * sizeof(struct attribute *),
 644                     GFP_KERNEL);
 645         if (!sobj)
 646                 return NULL;
 647         sobj->s.max_members = max_members;
 648         sobj->s.group.attrs = &sobj->a;
 649         sobj->s.group.name = name;
 650
 651         return &sobj->s;
 652 }
 653
 654 /* not multi-threaded safe, use it in a single thread per set */
 655 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
 656 {
 657         if (!s || !attr)
 658                 return -EINVAL;
 659
 660         if (s->members >= s->max_members)
 661                 return -ENOMEM;
 662
 663         s->group.attrs[s->members] = attr;
 664         s->members++;
 665
 666         return 0;
 667 }
 668
 669 static int add_many_to_attr_set(struct attribute_set* s,
 670                         struct attribute **attr,
 671                         unsigned int count)
 672 {
 673         int i, res;
 674
 675         for (i = 0; i < count; i++) {
 676                 res = add_to_attr_set(s, attr[i]);
 677                 if (res)
 678                         return res;
 679         }
 680
 681         return 0;
 682 }
 683
 684 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
 685 {
 686         sysfs_remove_group(kobj, &s->group);
 687         destroy_attr_set(s);
 688 }
 689
 690 static int parse_strtoul(const char *buf,
 691                 unsigned long max, unsigned long *value)
 692 {
 693         char *endp;
 694
 695         *value = simple_strtoul(buf, &endp, 0);
 696         while (*endp && isspace(*endp))
 697                 endp++;
 698         if (*endp || *value > max)
 699                 return -EINVAL;
 700
 701         return 0;
 702 }
 703
 704 /****************************************************************************
 705  ****************************************************************************
 706  *
 707  * Subdrivers
 708  *
 709  ****************************************************************************
 710  ****************************************************************************/
 711
 712 /*************************************************************************
 713  * thinkpad-acpi init subdriver
 714  */
 715
 716 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
 717 {
 718         printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
 719         printk(IBM_INFO "%s\n", IBM_URL);
 720
 721         printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
 722                 (thinkpad_id.bios_version_str) ?
 723                         thinkpad_id.bios_version_str : "unknown",
 724                 (thinkpad_id.ec_version_str) ?
 725                         thinkpad_id.ec_version_str : "unknown");
 726
 727         if (thinkpad_id.vendor && thinkpad_id.model_str)
 728                 printk(IBM_INFO "%s %s\n",
 729                         (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
 730                                 "IBM" : ((thinkpad_id.vendor ==
 731                                                 PCI_VENDOR_ID_LENOVO) ?
 732                                         "Lenovo" : "Unknown vendor"),
 733                         thinkpad_id.model_str);
 734
 735         return 0;
 736 }
 737
 738 static int thinkpad_acpi_driver_read(char *p)
 739 {
 740         int len = 0;
 741
 742         len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
 743         len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
 744
 745         return len;
 746 }
 747
 748 static struct ibm_struct thinkpad_acpi_driver_data = {
 749         .name = "driver",
 750         .read = thinkpad_acpi_driver_read,
 751 };
 752
 753 /*************************************************************************
 754  * Hotkey subdriver
 755  */
 756
 757 static int hotkey_orig_status;
 758 static u32 hotkey_orig_mask;
 759 static u32 hotkey_all_mask;
 760 static u32 hotkey_reserved_mask;
 761
 762 static u16 *hotkey_keycode_map;
 763
 764 static struct attribute_set *hotkey_dev_attributes;
 765
 766 static int hotkey_get_wlsw(int *status)
 767 {
 768         if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
 769                 return -EIO;
 770         return 0;
 771 }
 772
 773 /* sysfs hotkey enable ------------------------------------------------- */
 774 static ssize_t hotkey_enable_show(struct device *dev,
 775                            struct device_attribute *attr,
 776                            char *buf)
 777 {
 778         int res, status;
 779         u32 mask;
 780
 781         res = hotkey_get(&status, &mask);
 782         if (res)
 783                 return res;
 784
 785         return snprintf(buf, PAGE_SIZE, "%d\n", status);
 786 }
 787
 788 static ssize_t hotkey_enable_store(struct device *dev,
 789                             struct device_attribute *attr,
 790                             const char *buf, size_t count)
 791 {
 792         unsigned long t;
 793         int res, status;
 794         u32 mask;
 795
 796         if (parse_strtoul(buf, 1, &t))
 797                 return -EINVAL;
 798
 799         res = hotkey_get(&status, &mask);
 800         if (!res)
 801                 res = hotkey_set(t, mask);
 802
 803         return (res) ? res : count;
 804 }
 805
 806 static struct device_attribute dev_attr_hotkey_enable =
 807         __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
 808                 hotkey_enable_show, hotkey_enable_store);
 809
 810 /* sysfs hotkey mask --------------------------------------------------- */
 811 static ssize_t hotkey_mask_show(struct device *dev,
 812                            struct device_attribute *attr,
 813                            char *buf)
 814 {
 815         int res, status;
 816         u32 mask;
 817
 818         res = hotkey_get(&status, &mask);
 819         if (res)
 820                 return res;
 821
 822         return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
 823 }
 824
 825 static ssize_t hotkey_mask_store(struct device *dev,
 826                             struct device_attribute *attr,
 827                             const char *buf, size_t count)
 828 {
 829         unsigned long t;
 830         int res, status;
 831         u32 mask;
 832
 833         if (parse_strtoul(buf, 0xffffffffUL, &t))
 834                 return -EINVAL;
 835
 836         res = hotkey_get(&status, &mask);
 837         if (!res)
 838                 hotkey_set(status, t);
 839
 840         return (res) ? res : count;
 841 }
 842
 843 static struct device_attribute dev_attr_hotkey_mask =
 844         __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
 845                 hotkey_mask_show, hotkey_mask_store);
 846
 847 /* sysfs hotkey bios_enabled ------------------------------------------- */
 848 static ssize_t hotkey_bios_enabled_show(struct device *dev,
 849                            struct device_attribute *attr,
 850                            char *buf)
 851 {
 852         return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
 853 }
 854
 855 static struct device_attribute dev_attr_hotkey_bios_enabled =
 856         __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
 857
 858 /* sysfs hotkey bios_mask ---------------------------------------------- */
 859 static ssize_t hotkey_bios_mask_show(struct device *dev,
 860                            struct device_attribute *attr,
 861                            char *buf)
 862 {
 863         return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
 864 }
 865
 866 static struct device_attribute dev_attr_hotkey_bios_mask =
 867         __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
 868
 869 /* sysfs hotkey all_mask ----------------------------------------------- */
 870 static ssize_t hotkey_all_mask_show(struct device *dev,
 871                            struct device_attribute *attr,
 872                            char *buf)
 873 {
 874         return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
 875 }
 876
 877 static struct device_attribute dev_attr_hotkey_all_mask =
 878         __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
 879
 880 /* sysfs hotkey recommended_mask --------------------------------------- */
 881 static ssize_t hotkey_recommended_mask_show(struct device *dev,
 882                                             struct device_attribute *attr,
 883                                             char *buf)
 884 {
 885         return snprintf(buf, PAGE_SIZE, "0x%08x\n",
 886                         hotkey_all_mask & ~hotkey_reserved_mask);
 887 }
 888
 889 static struct device_attribute dev_attr_hotkey_recommended_mask =
 890         __ATTR(hotkey_recommended_mask, S_IRUGO,
 891                 hotkey_recommended_mask_show, NULL);
 892
 893 /* sysfs hotkey radio_sw ----------------------------------------------- */
 894 static ssize_t hotkey_radio_sw_show(struct device *dev,
 895                            struct device_attribute *attr,
 896                            char *buf)
 897 {
 898         int res, s;
 899         res = hotkey_get_wlsw(&s);
 900         if (res < 0)
 901                 return res;
 902
 903         return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
 904 }
 905
 906 static struct device_attribute dev_attr_hotkey_radio_sw =
 907         __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
 908
 909 /* sysfs hotkey report_mode -------------------------------------------- */
 910 static ssize_t hotkey_report_mode_show(struct device *dev,
 911                            struct device_attribute *attr,
 912                            char *buf)
 913 {
 914         return snprintf(buf, PAGE_SIZE, "%d\n",
 915                 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
 916 }
 917
 918 static struct device_attribute dev_attr_hotkey_report_mode =
 919         __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
 920
 921 /* --------------------------------------------------------------------- */
 922
 923 static struct attribute *hotkey_attributes[] __initdata = {
 924         &dev_attr_hotkey_enable.attr,
 925         &dev_attr_hotkey_report_mode.attr,
 926 };
 927
 928 static struct attribute *hotkey_mask_attributes[] __initdata = {
 929         &dev_attr_hotkey_mask.attr,
 930         &dev_attr_hotkey_bios_enabled.attr,
 931         &dev_attr_hotkey_bios_mask.attr,
 932         &dev_attr_hotkey_all_mask.attr,
 933         &dev_attr_hotkey_recommended_mask.attr,
 934 };
 935
 936 static int __init hotkey_init(struct ibm_init_struct *iibm)
 937 {
 938
 939         static u16 ibm_keycode_map[] __initdata = {
 940                 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
 941                 KEY_FN_F1,      KEY_FN_F2,      KEY_COFFEE,     KEY_SLEEP,
 942                 KEY_WLAN,       KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
 943                 KEY_FN_F9,      KEY_FN_F10,     KEY_FN_F11,     KEY_SUSPEND,
 944                 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
 945                 KEY_UNKNOWN,    /* 0x0C: FN+BACKSPACE */
 946                 KEY_UNKNOWN,    /* 0x0D: FN+INSERT */
 947                 KEY_UNKNOWN,    /* 0x0E: FN+DELETE */
 948                 KEY_RESERVED,   /* 0x0F: FN+HOME (brightness up) */
 949                 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
 950                 KEY_RESERVED,   /* 0x10: FN+END (brightness down) */
 951                 KEY_RESERVED,   /* 0x11: FN+PGUP (thinklight toggle) */
 952                 KEY_UNKNOWN,    /* 0x12: FN+PGDOWN */
 953                 KEY_ZOOM,       /* 0x13: FN+SPACE (zoom) */
 954                 KEY_RESERVED,   /* 0x14: VOLUME UP */
 955                 KEY_RESERVED,   /* 0x15: VOLUME DOWN */
 956                 KEY_RESERVED,   /* 0x16: MUTE */
 957                 KEY_VENDOR,     /* 0x17: Thinkpad/AccessIBM/Lenovo */
 958                 /* (assignments unknown, please report if found) */
 959                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
 960                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
 961         };
 962         static u16 lenovo_keycode_map[] __initdata = {
 963                 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
 964                 KEY_FN_F1,      KEY_COFFEE,     KEY_BATTERY,    KEY_SLEEP,
 965                 KEY_WLAN,       KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
 966                 KEY_FN_F9,      KEY_FN_F10,     KEY_FN_F11,     KEY_SUSPEND,
 967                 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
 968                 KEY_UNKNOWN,    /* 0x0C: FN+BACKSPACE */
 969                 KEY_UNKNOWN,    /* 0x0D: FN+INSERT */
 970                 KEY_UNKNOWN,    /* 0x0E: FN+DELETE */
 971                 KEY_BRIGHTNESSUP,       /* 0x0F: FN+HOME (brightness up) */
 972                 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
 973                 KEY_BRIGHTNESSDOWN,     /* 0x10: FN+END (brightness down) */
 974                 KEY_RESERVED,   /* 0x11: FN+PGUP (thinklight toggle) */
 975                 KEY_UNKNOWN,    /* 0x12: FN+PGDOWN */
 976                 KEY_ZOOM,       /* 0x13: FN+SPACE (zoom) */
 977                 KEY_RESERVED,   /* 0x14: VOLUME UP */
 978                 KEY_RESERVED,   /* 0x15: VOLUME DOWN */
 979                 KEY_RESERVED,   /* 0x16: MUTE */
 980                 KEY_VENDOR,     /* 0x17: Thinkpad/AccessIBM/Lenovo */
 981                 /* (assignments unknown, please report if found) */
 982                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
 983                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
 984         };
 985
 986 #define TPACPI_HOTKEY_MAP_LEN           ARRAY_SIZE(ibm_keycode_map)
 987 #define TPACPI_HOTKEY_MAP_SIZE          sizeof(ibm_keycode_map)
 988 #define TPACPI_HOTKEY_MAP_TYPESIZE      sizeof(ibm_keycode_map[0])
 989
 990         int res, i;
 991         int status;
 992
 993         vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
 994
 995         BUG_ON(!tpacpi_inputdev);
 996
 997         IBM_ACPIHANDLE_INIT(hkey);
 998         mutex_init(&hotkey_mutex);
 999
1000         /* hotkey not supported on 570 */
1001         tp_features.hotkey = hkey_handle != NULL;
1002
1003         vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
1004                 str_supported(tp_features.hotkey));
1005
1006         if (tp_features.hotkey) {
1007                 hotkey_dev_attributes = create_attr_set(8, NULL);
1008                 if (!hotkey_dev_attributes)
1009                         return -ENOMEM;
1010                 res = add_many_to_attr_set(hotkey_dev_attributes,
1011                                 hotkey_attributes,
1012                                 ARRAY_SIZE(hotkey_attributes));
1013                 if (res)
1014                         return res;
1015
1016                 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1017                    A30, R30, R31, T20-22, X20-21, X22-24 */
1018                 tp_features.hotkey_mask =
1019                         acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
1020
1021                 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1022                         str_supported(tp_features.hotkey_mask));
1023
1024                 if (tp_features.hotkey_mask) {
1025                         /* MHKA available in A31, R40, R40e, T4x, X31, and later */
1026                         if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1027                                         "MHKA", "qd"))
1028                                 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1029                 }
1030
1031                 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
1032                 if (!res && tp_features.hotkey_mask) {
1033                         res = add_many_to_attr_set(hotkey_dev_attributes,
1034                                 hotkey_mask_attributes,
1035                                 ARRAY_SIZE(hotkey_mask_attributes));
1036                 }
1037
1038                 /* Not all thinkpads have a hardware radio switch */
1039                 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1040                         tp_features.hotkey_wlsw = 1;
1041                         printk(IBM_INFO
1042                                 "radio switch found; radios are %s\n",
1043                                 enabled(status, 0));
1044                         res = add_to_attr_set(hotkey_dev_attributes,
1045                                         &dev_attr_hotkey_radio_sw.attr);
1046                 }
1047
1048                 if (!res)
1049                         res = register_attr_set_with_sysfs(
1050                                         hotkey_dev_attributes,
1051                                         &tpacpi_pdev->dev.kobj);
1052                 if (res)
1053                         return res;
1054
1055                 /* Set up key map */
1056
1057                 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1058                                                 GFP_KERNEL);
1059                 if (!hotkey_keycode_map) {
1060                         printk(IBM_ERR "failed to allocate memory for key map\n");
1061                         return -ENOMEM;
1062                 }
1063
1064                 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1065                         dbg_printk(TPACPI_DBG_INIT,
1066                                    "using Lenovo default hot key map\n");
1067                         memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1068                                 TPACPI_HOTKEY_MAP_SIZE);
1069                 } else {
1070                         dbg_printk(TPACPI_DBG_INIT,
1071                                    "using IBM default hot key map\n");
1072                         memcpy(hotkey_keycode_map, &ibm_keycode_map,
1073                                 TPACPI_HOTKEY_MAP_SIZE);
1074                 }
1075
1076                 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1077                 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1078                 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1079                 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1080                 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1081                 tpacpi_inputdev->keycode = hotkey_keycode_map;
1082                 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
1083                         if (hotkey_keycode_map[i] != KEY_RESERVED) {
1084                                 set_bit(hotkey_keycode_map[i],
1085                                         tpacpi_inputdev->keybit);
1086                         } else {
1087                                 if (i < sizeof(hotkey_reserved_mask)*8)
1088                                         hotkey_reserved_mask |= 1 << i;
1089                         }
1090                 }
1091
1092                 if (tp_features.hotkey_wlsw) {
1093                         set_bit(EV_SW, tpacpi_inputdev->evbit);
1094                         set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1095                 }
1096
1097                 dbg_printk(TPACPI_DBG_INIT,
1098                                 "enabling hot key handling\n");
1099                 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1100                                         | hotkey_orig_mask);
1101                 if (res)
1102                         return res;
1103
1104                 dbg_printk(TPACPI_DBG_INIT,
1105                                 "legacy hot key reporting over procfs %s\n",
1106                                 (hotkey_report_mode < 2) ?
1107                                         "enabled" : "disabled");
1108         }
1109
1110         return (tp_features.hotkey)? 0 : 1;
1111 }
1112
1113 static void hotkey_exit(void)
1114 {
1115         int res;
1116
1117         if (tp_features.hotkey) {
1118                 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
1119                 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1120                 if (res)
1121                         printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
1122         }
1123
1124         if (hotkey_dev_attributes) {
1125                 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1126                 hotkey_dev_attributes = NULL;
1127         }
1128 }
1129
1130 static void tpacpi_input_send_key(unsigned int scancode,
1131                                   unsigned int keycode)
1132 {
1133         if (keycode != KEY_RESERVED) {
1134                 input_report_key(tpacpi_inputdev, keycode, 1);
1135                 if (keycode == KEY_UNKNOWN)
1136                         input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1137                                     scancode);
1138                 input_sync(tpacpi_inputdev);
1139
1140                 input_report_key(tpacpi_inputdev, keycode, 0);
1141                 if (keycode == KEY_UNKNOWN)
1142                         input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1143                                     scancode);
1144                 input_sync(tpacpi_inputdev);
1145         }
1146 }
1147
1148 static void tpacpi_input_send_radiosw(void)
1149 {
1150         int wlsw;
1151
1152         if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1153                 input_report_switch(tpacpi_inputdev,
1154                                     SW_RADIO, !!wlsw);
1155                 input_sync(tpacpi_inputdev);
1156         }
1157 }
1158
1159 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1160 {
1161         u32 hkey;
1162         unsigned int keycode, scancode;
1163         int send_acpi_ev = 0;
1164
1165         if (event == 0x80 && acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1166                 switch (hkey >> 12) {
1167                 case 1:
1168                         /* 0x1000-0x1FFF: key presses */
1169                         scancode = hkey & 0xfff;
1170                         if (scancode > 0 && scancode < 0x21) {
1171                                 scancode--;
1172                                 keycode = hotkey_keycode_map[scancode];
1173                                 tpacpi_input_send_key(scancode, keycode);
1174                         } else {
1175                                 printk(IBM_ERR
1176                                        "hotkey 0x%04x out of range for keyboard map\n",
1177                                        hkey);
1178                                 send_acpi_ev = 1;
1179                         }
1180                         break;
1181                 case 5:
1182                         /* 0x5000-0x5FFF: LID */
1183                         /* we don't handle it through this path, just
1184                          * eat up known LID events */
1185                         if (hkey != 0x5001 && hkey != 0x5002) {
1186                                 printk(IBM_ERR
1187                                         "unknown LID-related hotkey event: 0x%04x\n",
1188                                         hkey);
1189                                 send_acpi_ev = 1;
1190                         }
1191                         break;
1192                 case 7:
1193                         /* 0x7000-0x7FFF: misc */
1194                         if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1195                                 tpacpi_input_send_radiosw();
1196                                 break;
1197                         }
1198                         /* fallthrough to default */
1199                 default:
1200                         /* case 2: dock-related */
1201                         /*      0x2305 - T43 waking up due to bay lever eject while aslept */
1202                         /* case 3: ultra-bay related. maybe bay in dock? */
1203                         /*      0x3003 - T43 after wake up by bay lever eject (0x2305) */
1204                         printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
1205                         send_acpi_ev = 1;
1206                 }
1207         } else {
1208                 printk(IBM_ERR "unknown hotkey notification event %d\n", event);
1209                 hkey = 0;
1210                 send_acpi_ev = 1;
1211         }
1212
1213         /* Legacy events */
1214         if (send_acpi_ev || hotkey_report_mode < 2)
1215                 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
1216
1217         /* netlink events */
1218         if (send_acpi_ev) {
1219                 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1220                                                 ibm->acpi->device->dev.bus_id,
1221                                                 event, hkey);
1222         }
1223 }
1224
1225 static void hotkey_resume(void)
1226 {
1227         tpacpi_input_send_radiosw();
1228 }
1229
1230 /*
1231  * Call with hotkey_mutex held
1232  */
1233 static int hotkey_get(int *status, u32 *mask)
1234 {
1235         if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1236                 return -EIO;
1237
1238         if (tp_features.hotkey_mask)
1239                 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
1240                         return -EIO;
1241
1242         return 0;
1243 }
1244
1245 /*
1246  * Call with hotkey_mutex held
1247  */
1248 static int hotkey_set(int status, u32 mask)
1249 {
1250         int i;
1251
1252         if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1253                 return -EIO;
1254
1255         if (tp_features.hotkey_mask)
1256                 for (i = 0; i < 32; i++) {
1257                         int bit = ((1 << i) & mask) != 0;
1258                         if (!acpi_evalf(hkey_handle,
1259                                         NULL, "MHKM", "vdd", i + 1, bit))
1260                                 return -EIO;
1261                 }
1262
1263         return 0;
1264 }
1265
1266 /* procfs -------------------------------------------------------------- */
1267 static int hotkey_read(char *p)
1268 {
1269         int res, status;
1270         u32 mask;
1271         int len = 0;
1272
1273         if (!tp_features.hotkey) {
1274                 len += sprintf(p + len, "status:\t\tnot supported\n");
1275                 return len;
1276         }
1277
1278         res = mutex_lock_interruptible(&hotkey_mutex);
1279         if (res < 0)
1280                 return res;
1281         res = hotkey_get(&status, &mask);
1282         mutex_unlock(&hotkey_mutex);
1283         if (res)
1284                 return res;
1285
1286         len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
1287         if (tp_features.hotkey_mask) {
1288                 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1289                 len += sprintf(p + len,
1290                                "commands:\tenable, disable, reset, <mask>\n");
1291         } else {
1292                 len += sprintf(p + len, "mask:\t\tnot supported\n");
1293                 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1294         }
1295
1296         return len;
1297 }
1298
1299 static int hotkey_write(char *buf)
1300 {
1301         int res, status;
1302         u32 mask;
1303         char *cmd;
1304         int do_cmd = 0;
1305
1306         if (!tp_features.hotkey)
1307                 return -ENODEV;
1308
1309         res = mutex_lock_interruptible(&hotkey_mutex);
1310         if (res < 0)
1311                 return res;
1312
1313         res = hotkey_get(&status, &mask);
1314         if (res)
1315                 goto errexit;
1316
1317         res = 0;
1318         while ((cmd = next_cmd(&buf))) {
1319                 if (strlencmp(cmd, "enable") == 0) {
1320                         status = 1;
1321                 } else if (strlencmp(cmd, "disable") == 0) {
1322                         status = 0;
1323                 } else if (strlencmp(cmd, "reset") == 0) {
1324                         status = hotkey_orig_status;
1325                         mask = hotkey_orig_mask;
1326                 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1327                         /* mask set */
1328                 } else if (sscanf(cmd, "%x", &mask) == 1) {
1329                         /* mask set */
1330                 } else {
1331                         res = -EINVAL;
1332                         goto errexit;
1333                 }
1334                 do_cmd = 1;
1335         }
1336
1337         if (do_cmd)
1338                 res = hotkey_set(status, mask);
1339
1340 errexit:
1341         mutex_unlock(&hotkey_mutex);
1342         return res;
1343 }
1344
1345 static const struct acpi_device_id ibm_htk_device_ids[] = {
1346         {IBM_HKEY_HID, 0},
1347         {"", 0},
1348 };
1349
1350 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1351         .hid = ibm_htk_device_ids,
1352         .notify = hotkey_notify,
1353         .handle = &hkey_handle,
1354         .type = ACPI_DEVICE_NOTIFY,
1355 };
1356
1357 static struct ibm_struct hotkey_driver_data = {
1358         .name = "hotkey",
1359         .read = hotkey_read,
1360         .write = hotkey_write,
1361         .exit = hotkey_exit,
1362         .resume = hotkey_resume,
1363         .acpi = &ibm_hotkey_acpidriver,
1364 };
1365
1366 /*************************************************************************
1367  * Bluetooth subdriver
1368  */
1369
1370 /* sysfs bluetooth enable ---------------------------------------------- */
1371 static ssize_t bluetooth_enable_show(struct device *dev,
1372                            struct device_attribute *attr,
1373                            char *buf)
1374 {
1375         int status;
1376
1377         status = bluetooth_get_radiosw();
1378         if (status < 0)
1379                 return status;
1380
1381         return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1382 }
1383
1384 static ssize_t bluetooth_enable_store(struct device *dev,
1385                             struct device_attribute *attr,
1386                             const char *buf, size_t count)
1387 {
1388         unsigned long t;
1389         int res;
1390
1391         if (parse_strtoul(buf, 1, &t))
1392                 return -EINVAL;
1393
1394         res = bluetooth_set_radiosw(t);
1395
1396         return (res) ? res : count;
1397 }
1398
1399 static struct device_attribute dev_attr_bluetooth_enable =
1400         __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
1401                 bluetooth_enable_show, bluetooth_enable_store);
1402
1403 /* --------------------------------------------------------------------- */
1404
1405 static struct attribute *bluetooth_attributes[] = {
1406         &dev_attr_bluetooth_enable.attr,
1407         NULL
1408 };
1409
1410 static const struct attribute_group bluetooth_attr_group = {
1411         .attrs = bluetooth_attributes,
1412 };
1413
1414 static int __init bluetooth_init(struct ibm_init_struct *iibm)
1415 {
1416         int res;
1417         int status = 0;
1418
1419         vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1420
1421         IBM_ACPIHANDLE_INIT(hkey);
1422
1423         /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1424            G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
1425         tp_features.bluetooth = hkey_handle &&
1426             acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1427
1428         vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1429                 str_supported(tp_features.bluetooth),
1430                 status);
1431
1432         if (tp_features.bluetooth) {
1433                 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1434                         /* no bluetooth hardware present in system */
1435                         tp_features.bluetooth = 0;
1436                         dbg_printk(TPACPI_DBG_INIT,
1437                                    "bluetooth hardware not installed\n");
1438                 } else {
1439                         res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1440                                         &bluetooth_attr_group);
1441                         if (res)
1442                                 return res;
1443                 }
1444         }
1445
1446         return (tp_features.bluetooth)? 0 : 1;
1447 }
1448
1449 static void bluetooth_exit(void)
1450 {
1451         sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1452                         &bluetooth_attr_group);
1453 }
1454
1455 static int bluetooth_get_radiosw(void)
1456 {
1457         int status;
1458
1459         if (!tp_features.bluetooth)
1460                 return -ENODEV;
1461
1462         if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1463                 return -EIO;
1464
1465         return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1466 }
1467
1468 static int bluetooth_set_radiosw(int radio_on)
1469 {
1470         int status;
1471
1472         if (!tp_features.bluetooth)
1473                 return -ENODEV;
1474
1475         if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1476                 return -EIO;
1477         if (radio_on)
1478                 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1479         else
1480                 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1481         if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1482                 return -EIO;
1483
1484         return 0;
1485 }
1486
1487 /* procfs -------------------------------------------------------------- */
1488 static int bluetooth_read(char *p)
1489 {
1490         int len = 0;
1491         int status = bluetooth_get_radiosw();
1492
1493         if (!tp_features.bluetooth)
1494                 len += sprintf(p + len, "status:\t\tnot supported\n");
1495         else {
1496                 len += sprintf(p + len, "status:\t\t%s\n",
1497                                 (status)? "enabled" : "disabled");
1498                 len += sprintf(p + len, "commands:\tenable, disable\n");
1499         }
1500
1501         return len;
1502 }
1503
1504 static int bluetooth_write(char *buf)
1505 {
1506         char *cmd;
1507
1508         if (!tp_features.bluetooth)
1509                 return -ENODEV;
1510
1511         while ((cmd = next_cmd(&buf))) {
1512                 if (strlencmp(cmd, "enable") == 0) {
1513                         bluetooth_set_radiosw(1);
1514                 } else if (strlencmp(cmd, "disable") == 0) {
1515                         bluetooth_set_radiosw(0);
1516                 } else
1517                         return -EINVAL;
1518         }
1519
1520         return 0;
1521 }
1522
1523 static struct ibm_struct bluetooth_driver_data = {
1524         .name = "bluetooth",
1525         .read = bluetooth_read,
1526         .write = bluetooth_write,
1527         .exit = bluetooth_exit,
1528 };
1529
1530 /*************************************************************************
1531  * Wan subdriver
1532  */
1533
1534 /* sysfs wan enable ---------------------------------------------------- */
1535 static ssize_t wan_enable_show(struct device *dev,
1536                            struct device_attribute *attr,
1537                            char *buf)
1538 {
1539         int status;
1540
1541         status = wan_get_radiosw();
1542         if (status < 0)
1543                 return status;
1544
1545         return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1546 }
1547
1548 static ssize_t wan_enable_store(struct device *dev,
1549                             struct device_attribute *attr,
1550                             const char *buf, size_t count)
1551 {
1552         unsigned long t;
1553         int res;
1554
1555         if (parse_strtoul(buf, 1, &t))
1556                 return -EINVAL;
1557
1558         res = wan_set_radiosw(t);
1559
1560         return (res) ? res : count;
1561 }
1562
1563 static struct device_attribute dev_attr_wan_enable =
1564         __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
1565                 wan_enable_show, wan_enable_store);
1566
1567 /* --------------------------------------------------------------------- */
1568
1569 static struct attribute *wan_attributes[] = {
1570         &dev_attr_wan_enable.attr,
1571         NULL
1572 };
1573
1574 static const struct attribute_group wan_attr_group = {
1575         .attrs = wan_attributes,
1576 };
1577
1578 static int __init wan_init(struct ibm_init_struct *iibm)
1579 {
1580         int res;
1581         int status = 0;
1582
1583         vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1584
1585         IBM_ACPIHANDLE_INIT(hkey);
1586
1587         tp_features.wan = hkey_handle &&
1588             acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1589
1590         vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1591                 str_supported(tp_features.wan),
1592                 status);
1593
1594         if (tp_features.wan) {
1595                 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1596                         /* no wan hardware present in system */
1597                         tp_features.wan = 0;
1598                         dbg_printk(TPACPI_DBG_INIT,
1599                                    "wan hardware not installed\n");
1600                 } else {
1601                         res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1602                                         &wan_attr_group);
1603                         if (res)
1604                                 return res;
1605                 }
1606         }
1607
1608         return (tp_features.wan)? 0 : 1;
1609 }
1610
1611 static void wan_exit(void)
1612 {
1613         sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1614                 &wan_attr_group);
1615 }
1616
1617 static int wan_get_radiosw(void)
1618 {
1619         int status;
1620
1621         if (!tp_features.wan)
1622                 return -ENODEV;
1623
1624         if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1625                 return -EIO;
1626
1627         return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1628 }
1629
1630 static int wan_set_radiosw(int radio_on)
1631 {
1632         int status;
1633
1634         if (!tp_features.wan)
1635                 return -ENODEV;
1636
1637         if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1638                 return -EIO;
1639         if (radio_on)
1640                 status |= TP_ACPI_WANCARD_RADIOSSW;
1641         else
1642                 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1643         if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1644                 return -EIO;
1645
1646         return 0;
1647 }
1648
1649 /* procfs -------------------------------------------------------------- */
1650 static int wan_read(char *p)
1651 {
1652         int len = 0;
1653         int status = wan_get_radiosw();
1654
1655         if (!tp_features.wan)
1656                 len += sprintf(p + len, "status:\t\tnot supported\n");
1657         else {
1658                 len += sprintf(p + len, "status:\t\t%s\n",
1659                                 (status)? "enabled" : "disabled");
1660                 len += sprintf(p + len, "commands:\tenable, disable\n");
1661         }
1662
1663         return len;
1664 }
1665
1666 static int wan_write(char *buf)
1667 {
1668         char *cmd;
1669
1670         if (!tp_features.wan)
1671                 return -ENODEV;
1672
1673         while ((cmd = next_cmd(&buf))) {
1674                 if (strlencmp(cmd, "enable") == 0) {
1675                         wan_set_radiosw(1);
1676                 } else if (strlencmp(cmd, "disable") == 0) {
1677                         wan_set_radiosw(0);
1678                 } else
1679                         return -EINVAL;
1680         }
1681
1682         return 0;
1683 }
1684
1685 static struct ibm_struct wan_driver_data = {
1686         .name = "wan",
1687         .read = wan_read,
1688         .write = wan_write,
1689         .exit = wan_exit,
1690         .flags.experimental = 1,
1691 };
1692
1693 /*************************************************************************
1694  * Video subdriver
1695  */
1696
1697 static enum video_access_mode video_supported;
1698 static int video_orig_autosw;
1699
1700 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA",      /* 570 */
1701            "\\_SB.PCI0.AGP0.VID0",      /* 600e/x, 770x */
1702            "\\_SB.PCI0.VID0",   /* 770e */
1703            "\\_SB.PCI0.VID",    /* A21e, G4x, R50e, X30, X40 */
1704            "\\_SB.PCI0.AGP.VID",        /* all others */
1705            );                           /* R30, R31 */
1706
1707 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID");  /* G41 */
1708
1709 static int __init video_init(struct ibm_init_struct *iibm)
1710 {
1711         int ivga;
1712
1713         vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1714
1715         IBM_ACPIHANDLE_INIT(vid);
1716         IBM_ACPIHANDLE_INIT(vid2);
1717
1718         if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1719                 /* G41, assume IVGA doesn't change */
1720                 vid_handle = vid2_handle;
1721
1722         if (!vid_handle)
1723                 /* video switching not supported on R30, R31 */
1724                 video_supported = TPACPI_VIDEO_NONE;
1725         else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1726                 /* 570 */
1727                 video_supported = TPACPI_VIDEO_570;
1728         else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1729                 /* 600e/x, 770e, 770x */
1730                 video_supported = TPACPI_VIDEO_770;
1731         else
1732                 /* all others */
1733                 video_supported = TPACPI_VIDEO_NEW;
1734
1735         vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1736                 str_supported(video_supported != TPACPI_VIDEO_NONE),
1737                 video_supported);
1738
1739         return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1740 }
1741
1742 static void video_exit(void)
1743 {
1744         dbg_printk(TPACPI_DBG_EXIT,
1745                    "restoring original video autoswitch mode\n");
1746         if (video_autosw_set(video_orig_autosw))
1747                 printk(IBM_ERR "error while trying to restore original "
1748                         "video autoswitch mode\n");
1749 }
1750
1751 static int video_outputsw_get(void)
1752 {
1753         int status = 0;
1754         int i;
1755
1756         switch (video_supported) {
1757         case TPACPI_VIDEO_570:
1758                 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1759                                  TP_ACPI_VIDEO_570_PHSCMD))
1760                         return -EIO;
1761                 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1762                 break;
1763         case TPACPI_VIDEO_770:
1764                 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1765                         return -EIO;
1766                 if (i)
1767                         status |= TP_ACPI_VIDEO_S_LCD;
1768                 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1769                         return -EIO;
1770                 if (i)
1771                         status |= TP_ACPI_VIDEO_S_CRT;
1772                 break;
1773         case TPACPI_VIDEO_NEW:
1774                 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1775                     !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1776                         return -EIO;
1777                 if (i)
1778                         status |= TP_ACPI_VIDEO_S_CRT;
1779
1780                 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1781                     !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1782                         return -EIO;
1783                 if (i)
1784                         status |= TP_ACPI_VIDEO_S_LCD;
1785                 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1786                         return -EIO;
1787                 if (i)
1788                         status |= TP_ACPI_VIDEO_S_DVI;
1789                 break;
1790         default:
1791                 return -ENOSYS;
1792         }
1793
1794         return status;
1795 }
1796
1797 static int video_outputsw_set(int status)
1798 {
1799         int autosw;
1800         int res = 0;
1801
1802         switch (video_supported) {
1803         case TPACPI_VIDEO_570:
1804                 res = acpi_evalf(NULL, NULL,
1805                                  "\\_SB.PHS2", "vdd",
1806                                  TP_ACPI_VIDEO_570_PHS2CMD,
1807                                  status | TP_ACPI_VIDEO_570_PHS2SET);
1808                 break;
1809         case TPACPI_VIDEO_770:
1810                 autosw = video_autosw_get();
1811                 if (autosw < 0)
1812                         return autosw;
1813
1814                 res = video_autosw_set(1);
1815                 if (res)
1816                         return res;
1817                 res = acpi_evalf(vid_handle, NULL,
1818                                  "ASWT", "vdd", status * 0x100, 0);
1819                 if (!autosw && video_autosw_set(autosw)) {
1820                         printk(IBM_ERR "video auto-switch left enabled due to error\n");
1821                         return -EIO;
1822                 }
1823                 break;
1824         case TPACPI_VIDEO_NEW:
1825                 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1826                         acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1827                 break;
1828         default:
1829                 return -ENOSYS;
1830         }
1831
1832         return (res)? 0 : -EIO;
1833 }
1834
1835 static int video_autosw_get(void)
1836 {
1837         int autosw = 0;
1838
1839         switch (video_supported) {
1840         case TPACPI_VIDEO_570:
1841                 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1842                         return -EIO;
1843                 break;
1844         case TPACPI_VIDEO_770:
1845         case TPACPI_VIDEO_NEW:
1846                 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1847                         return -EIO;
1848                 break;
1849         default:
1850                 return -ENOSYS;
1851         }
1852
1853         return autosw & 1;
1854 }
1855
1856 static int video_autosw_set(int enable)
1857 {
1858         if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1859                 return -EIO;
1860         return 0;
1861 }
1862
1863 static int video_outputsw_cycle(void)
1864 {
1865         int autosw = video_autosw_get();
1866         int res;
1867
1868         if (autosw < 0)
1869                 return autosw;
1870
1871         switch (video_supported) {
1872         case TPACPI_VIDEO_570:
1873                 res = video_autosw_set(1);
1874                 if (res)
1875                         return res;
1876                 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1877                 break;
1878         case TPACPI_VIDEO_770:
1879         case TPACPI_VIDEO_NEW:
1880                 res = video_autosw_set(1);
1881                 if (res)
1882                         return res;
1883                 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1884                 break;
1885         default:
1886                 return -ENOSYS;
1887         }
1888         if (!autosw && video_autosw_set(autosw)) {
1889                 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1890                 return -EIO;
1891         }
1892
1893         return (res)? 0 : -EIO;
1894 }
1895
1896 static int video_expand_toggle(void)
1897 {
1898         switch (video_supported) {
1899         case TPACPI_VIDEO_570:
1900                 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1901                         0 : -EIO;
1902         case TPACPI_VIDEO_770:
1903                 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1904                         0 : -EIO;
1905         case TPACPI_VIDEO_NEW:
1906                 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1907                         0 : -EIO;
1908         default:
1909                 return -ENOSYS;
1910         }
1911         /* not reached */
1912 }
1913
1914 static int video_read(char *p)
1915 {
1916         int status, autosw;
1917         int len = 0;
1918
1919         if (video_supported == TPACPI_VIDEO_NONE) {
1920                 len += sprintf(p + len, "status:\t\tnot supported\n");
1921                 return len;
1922         }
1923
1924         status = video_outputsw_get();
1925         if (status < 0)
1926                 return status;
1927
1928         autosw = video_autosw_get();
1929         if (autosw < 0)
1930                 return autosw;
1931
1932         len += sprintf(p + len, "status:\t\tsupported\n");
1933         len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1934         len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
1935         if (video_supported == TPACPI_VIDEO_NEW)
1936                 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1937         len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1938         len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1939         len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
1940         if (video_supported == TPACPI_VIDEO_NEW)
1941                 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1942         len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1943         len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1944
1945         return len;
1946 }
1947
1948 static int video_write(char *buf)
1949 {
1950         char *cmd;
1951         int enable, disable, status;
1952         int res;
1953
1954         if (video_supported == TPACPI_VIDEO_NONE)
1955                 return -ENODEV;
1956
1957         enable = 0;
1958         disable = 0;
1959
1960         while ((cmd = next_cmd(&buf))) {
1961                 if (strlencmp(cmd, "lcd_enable") == 0) {
1962                         enable |= TP_ACPI_VIDEO_S_LCD;
1963                 } else if (strlencmp(cmd, "lcd_disable") == 0) {
1964                         disable |= TP_ACPI_VIDEO_S_LCD;
1965                 } else if (strlencmp(cmd, "crt_enable") == 0) {
1966                         enable |= TP_ACPI_VIDEO_S_CRT;
1967                 } else if (strlencmp(cmd, "crt_disable") == 0) {
1968                         disable |= TP_ACPI_VIDEO_S_CRT;
1969                 } else if (video_supported == TPACPI_VIDEO_NEW &&
1970                            strlencmp(cmd, "dvi_enable") == 0) {
1971                         enable |= TP_ACPI_VIDEO_S_DVI;
1972                 } else if (video_supported == TPACPI_VIDEO_NEW &&
1973                            strlencmp(cmd, "dvi_disable") == 0) {
1974                         disable |= TP_ACPI_VIDEO_S_DVI;
1975                 } else if (strlencmp(cmd, "auto_enable") == 0) {
1976                         res = video_autosw_set(1);
1977                         if (res)
1978                                 return res;
1979                 } else if (strlencmp(cmd, "auto_disable") == 0) {
1980                         res = video_autosw_set(0);
1981                         if (res)
1982                                 return res;
1983                 } else if (strlencmp(cmd, "video_switch") == 0) {
1984                         res = video_outputsw_cycle();
1985                         if (res)
1986                                 return res;
1987                 } else if (strlencmp(cmd, "expand_toggle") == 0) {
1988                         res = video_expand_toggle();
1989                         if (res)
1990                                 return res;
1991                 } else
1992                         return -EINVAL;
1993         }
1994
1995         if (enable || disable) {
1996                 status = video_outputsw_get();
1997                 if (status < 0)
1998                         return status;
1999                 res = video_outputsw_set((status & ~disable) | enable);
2000                 if (res)
2001                         return res;
2002         }
2003
2004         return 0;
2005 }
2006
2007 static struct ibm_struct video_driver_data = {
2008         .name = "video",
2009         .read = video_read,
2010         .write = video_write,
2011         .exit = video_exit,
2012 };
2013
2014 /*************************************************************************
2015  * Light (thinklight) subdriver
2016  */
2017
2018 IBM_HANDLE(lght, root, "\\LGHT");       /* A21e, A2xm/p, T20-22, X20-21 */
2019 IBM_HANDLE(ledb, ec, "LEDB");           /* G4x */
2020
2021 static int __init light_init(struct ibm_init_struct *iibm)
2022 {
2023         vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2024
2025         IBM_ACPIHANDLE_INIT(ledb);
2026         IBM_ACPIHANDLE_INIT(lght);
2027         IBM_ACPIHANDLE_INIT(cmos);
2028
2029         /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
2030         tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
2031
2032         if (tp_features.light)
2033                 /* light status not supported on
2034                    570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
2035                 tp_features.light_status =
2036                         acpi_evalf(ec_handle, NULL, "KBLT", "qv");
2037
2038         vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
2039                 str_supported(tp_features.light));
2040
2041         return (tp_features.light)? 0 : 1;
2042 }
2043
2044 static int light_read(char *p)
2045 {
2046         int len = 0;
2047         int status = 0;
2048
2049         if (!tp_features.light) {
2050                 len += sprintf(p + len, "status:\t\tnot supported\n");
2051         } else if (!tp_features.light_status) {
2052                 len += sprintf(p + len, "status:\t\tunknown\n");
2053                 len += sprintf(p + len, "commands:\ton, off\n");
2054         } else {
2055                 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2056                         return -EIO;
2057                 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
2058                 len += sprintf(p + len, "commands:\ton, off\n");
2059         }
2060
2061         return len;
2062 }
2063
2064 static int light_write(char *buf)
2065 {
2066         int cmos_cmd, lght_cmd;
2067         char *cmd;
2068         int success;
2069
2070         if (!tp_features.light)
2071                 return -ENODEV;
2072
2073         while ((cmd = next_cmd(&buf))) {
2074                 if (strlencmp(cmd, "on") == 0) {
2075                         cmos_cmd = 0x0c;
2076                         lght_cmd = 1;
2077                 } else if (strlencmp(cmd, "off") == 0) {
2078                         cmos_cmd = 0x0d;
2079                         lght_cmd = 0;
2080                 } else
2081                         return -EINVAL;
2082
2083                 success = cmos_handle ?
2084                     acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2085                     acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
2086                 if (!success)
2087                         return -EIO;
2088         }
2089
2090         return 0;
2091 }
2092
2093 static struct ibm_struct light_driver_data = {
2094         .name = "light",
2095         .read = light_read,
2096         .write = light_write,
2097 };
2098
2099 /*************************************************************************
2100  * Dock subdriver
2101  */
2102
2103 #ifdef CONFIG_THINKPAD_ACPI_DOCK
2104
2105 IBM_HANDLE(dock, root, "\\_SB.GDCK",    /* X30, X31, X40 */
2106            "\\_SB.PCI0.DOCK",   /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2107            "\\_SB.PCI0.PCI1.DOCK",      /* all others */
2108            "\\_SB.PCI.ISA.SLCE",        /* 570 */
2109     );                          /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2110
2111 /* don't list other alternatives as we install a notify handler on the 570 */
2112 IBM_HANDLE(pci, root, "\\_SB.PCI");     /* 570 */
2113
2114 static const struct acpi_device_id ibm_pci_device_ids[] = {
2115         {PCI_ROOT_HID_STRING, 0},
2116         {"", 0},
2117 };
2118
2119 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2120         {
2121          .notify = dock_notify,
2122          .handle = &dock_handle,
2123          .type = ACPI_SYSTEM_NOTIFY,
2124         },
2125         {
2126         /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2127          * We just use it to get notifications of dock hotplug
2128          * in very old thinkpads */
2129          .hid = ibm_pci_device_ids,
2130          .notify = dock_notify,
2131          .handle = &pci_handle,
2132          .type = ACPI_SYSTEM_NOTIFY,
2133         },
2134 };
2135
2136 static struct ibm_struct dock_driver_data[2] = {
2137         {
2138          .name = "dock",
2139          .read = dock_read,
2140          .write = dock_write,
2141          .acpi = &ibm_dock_acpidriver[0],
2142         },
2143         {
2144          .name = "dock",
2145          .acpi = &ibm_dock_acpidriver[1],
2146         },
2147 };
2148
2149 #define dock_docked() (_sta(dock_handle) & 1)
2150
2151 static int __init dock_init(struct ibm_init_struct *iibm)
2152 {
2153         vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2154
2155         IBM_ACPIHANDLE_INIT(dock);
2156
2157         vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2158                 str_supported(dock_handle != NULL));
2159
2160         return (dock_handle)? 0 : 1;
2161 }
2162
2163 static int __init dock_init2(struct ibm_init_struct *iibm)
2164 {
2165         int dock2_needed;
2166
2167         vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2168
2169         if (dock_driver_data[0].flags.acpi_driver_registered &&
2170             dock_driver_data[0].flags.acpi_notify_installed) {
2171                 IBM_ACPIHANDLE_INIT(pci);
2172                 dock2_needed = (pci_handle != NULL);
2173                 vdbg_printk(TPACPI_DBG_INIT,
2174                             "dock PCI handler for the TP 570 is %s\n",
2175                             str_supported(dock2_needed));
2176         } else {
2177                 vdbg_printk(TPACPI_DBG_INIT,
2178                 "dock subdriver part 2 not required\n");
2179                 dock2_needed = 0;
2180         }
2181
2182         return (dock2_needed)? 0 : 1;
2183 }
2184
2185 static void dock_notify(struct ibm_struct *ibm, u32 event)
2186 {
2187         int docked = dock_docked();
2188         int pci = ibm->acpi->hid && ibm->acpi->device &&
2189                 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
2190         int data;
2191
2192         if (event == 1 && !pci) /* 570 */
2193                 data = 1;       /* button */
2194         else if (event == 1 && pci)     /* 570 */
2195                 data = 3;       /* dock */
2196         else if (event == 3 && docked)
2197                 data = 1;       /* button */
2198         else if (event == 3 && !docked)
2199                 data = 2;       /* undock */
2200         else if (event == 0 && docked)
2201                 data = 3;       /* dock */
2202         else {
2203                 printk(IBM_ERR "unknown dock event %d, status %d\n",
2204                        event, _sta(dock_handle));
2205                 data = 0;       /* unknown */
2206         }
2207         acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
2208         acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2209                                           ibm->acpi->device->dev.bus_id,
2210                                           event, data);
2211 }
2212
2213 static int dock_read(char *p)
2214 {
2215         int len = 0;
2216         int docked = dock_docked();
2217
2218         if (!dock_handle)
2219                 len += sprintf(p + len, "status:\t\tnot supported\n");
2220         else if (!docked)
2221                 len += sprintf(p + len, "status:\t\tundocked\n");
2222         else {
2223                 len += sprintf(p + len, "status:\t\tdocked\n");
2224                 len += sprintf(p + len, "commands:\tdock, undock\n");
2225         }
2226
2227         return len;
2228 }
2229
2230 static int dock_write(char *buf)
2231 {
2232         char *cmd;
2233
2234         if (!dock_docked())
2235                 return -ENODEV;
2236
2237         while ((cmd = next_cmd(&buf))) {
2238                 if (strlencmp(cmd, "undock") == 0) {
2239                         if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2240                             !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
2241                                 return -EIO;
2242                 } else if (strlencmp(cmd, "dock") == 0) {
2243                         if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2244                                 return -EIO;
2245                 } else
2246                         return -EINVAL;
2247         }
2248
2249         return 0;
2250 }
2251
2252 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
2253
2254 /*************************************************************************
2255  * Bay subdriver
2256  */
2257
2258 #ifdef CONFIG_THINKPAD_ACPI_BAY
2259 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST",        /* 570 */
2260            "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2261            "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2262            "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2263            );                           /* A21e, R30, R31 */
2264 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2265            "_EJ0",              /* all others */
2266            );                   /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2267 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV",     /* A3x, R32 */
2268            "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2269            );                           /* all others */
2270 IBM_HANDLE(bay2_ej, bay2, "_EJ3",       /* 600e/x, 770e, A3x */
2271            "_EJ0",                      /* 770x */
2272            );                           /* all others */
2273
2274 static int __init bay_init(struct ibm_init_struct *iibm)
2275 {
2276         vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2277
2278         IBM_ACPIHANDLE_INIT(bay);
2279         if (bay_handle)
2280                 IBM_ACPIHANDLE_INIT(bay_ej);
2281         IBM_ACPIHANDLE_INIT(bay2);
2282         if (bay2_handle)
2283                 IBM_ACPIHANDLE_INIT(bay2_ej);
2284
2285         tp_features.bay_status = bay_handle &&
2286                 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2287         tp_features.bay_status2 = bay2_handle &&
2288                 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
2289
2290         tp_features.bay_eject = bay_handle && bay_ej_handle &&
2291                 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2292         tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2293                 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
2294
2295         vdbg_printk(TPACPI_DBG_INIT,
2296                 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
2297                 str_supported(tp_features.bay_status),
2298                 str_supported(tp_features.bay_eject),
2299                 str_supported(tp_features.bay_status2),
2300                 str_supported(tp_features.bay_eject2));
2301
2302         return (tp_features.bay_status || tp_features.bay_eject ||
2303                 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
2304 }
2305
2306 static void bay_notify(struct ibm_struct *ibm, u32 event)
2307 {
2308         acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
2309         acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2310                                           ibm->acpi->device->dev.bus_id,
2311                                           event, 0);
2312 }
2313
2314 #define bay_occupied(b) (_sta(b##_handle) & 1)
2315
2316 static int bay_read(char *p)
2317 {
2318         int len = 0;
2319         int occupied = bay_occupied(bay);
2320         int occupied2 = bay_occupied(bay2);
2321         int eject, eject2;
2322
2323         len += sprintf(p + len, "status:\t\t%s\n",
2324                 tp_features.bay_status ?
2325                         (occupied ? "occupied" : "unoccupied") :
2326                                 "not supported");
2327         if (tp_features.bay_status2)
2328                 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2329                                "occupied" : "unoccupied");
2330
2331         eject = tp_features.bay_eject && occupied;
2332         eject2 = tp_features.bay_eject2 && occupied2;
2333
2334         if (eject && eject2)
2335                 len += sprintf(p + len, "commands:\teject, eject2\n");
2336         else if (eject)
2337                 len += sprintf(p + len, "commands:\teject\n");
2338         else if (eject2)
2339                 len += sprintf(p + len, "commands:\teject2\n");
2340
2341         return len;
2342 }
2343
2344 static int bay_write(char *buf)
2345 {
2346         char *cmd;
2347
2348         if (!tp_features.bay_eject && !tp_features.bay_eject2)
2349                 return -ENODEV;
2350
2351         while ((cmd = next_cmd(&buf))) {
2352                 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
2353                         if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2354                                 return -EIO;
2355                 } else if (tp_features.bay_eject2 &&
2356                            strlencmp(cmd, "eject2") == 0) {
2357                         if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
2358                                 return -EIO;
2359                 } else
2360                         return -EINVAL;
2361         }
2362
2363         return 0;
2364 }
2365
2366 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2367         .notify = bay_notify,
2368         .handle = &bay_handle,
2369         .type = ACPI_SYSTEM_NOTIFY,
2370 };
2371
2372 static struct ibm_struct bay_driver_data = {
2373         .name = "bay",
2374         .read = bay_read,
2375         .write = bay_write,
2376         .acpi = &ibm_bay_acpidriver,
2377 };
2378
2379 #endif /* CONFIG_THINKPAD_ACPI_BAY */
2380
2381 /*************************************************************************
2382  * CMOS subdriver
2383  */
2384
2385 /* sysfs cmos_command -------------------------------------------------- */
2386 static ssize_t cmos_command_store(struct device *dev,
2387                             struct device_attribute *attr,
2388                             const char *buf, size_t count)
2389 {
2390         unsigned long cmos_cmd;
2391         int res;
2392
2393         if (parse_strtoul(buf, 21, &cmos_cmd))
2394                 return -EINVAL;
2395
2396         res = issue_thinkpad_cmos_command(cmos_cmd);
2397         return (res)? res : count;
2398 }
2399
2400 static struct device_attribute dev_attr_cmos_command =
2401         __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2402
2403 /* --------------------------------------------------------------------- */
2404
2405 static int __init cmos_init(struct ibm_init_struct *iibm)
2406 {
2407         int res;
2408
2409         vdbg_printk(TPACPI_DBG_INIT,
2410                 "initializing cmos commands subdriver\n");
2411
2412         IBM_ACPIHANDLE_INIT(cmos);
2413
2414         vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2415                 str_supported(cmos_handle != NULL));
2416
2417         res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2418         if (res)
2419                 return res;
2420
2421         return (cmos_handle)? 0 : 1;
2422 }
2423
2424 static void cmos_exit(void)
2425 {
2426         device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2427 }
2428
2429 static int cmos_read(char *p)
2430 {
2431         int len = 0;
2432
2433         /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2434            R30, R31, T20-22, X20-21 */
2435         if (!cmos_handle)
2436                 len += sprintf(p + len, "status:\t\tnot supported\n");
2437         else {
2438                 len += sprintf(p + len, "status:\t\tsupported\n");
2439                 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
2440         }
2441
2442         return len;
2443 }
2444
2445 static int cmos_write(char *buf)
2446 {
2447         char *cmd;
2448         int cmos_cmd, res;
2449
2450         while ((cmd = next_cmd(&buf))) {
2451                 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2452                     cmos_cmd >= 0 && cmos_cmd <= 21) {
2453                         /* cmos_cmd set */
2454                 } else
2455                         return -EINVAL;
2456
2457                 res = issue_thinkpad_cmos_command(cmos_cmd);
2458                 if (res)
2459                         return res;
2460         }
2461
2462         return 0;
2463 }
2464
2465 static struct ibm_struct cmos_driver_data = {
2466         .name = "cmos",
2467         .read = cmos_read,
2468         .write = cmos_write,
2469         .exit = cmos_exit,
2470 };
2471
2472 /*************************************************************************
2473  * LED subdriver
2474  */
2475
2476 static enum led_access_mode led_supported;
2477
2478 IBM_HANDLE(led, ec, "SLED",     /* 570 */
2479            "SYSL",              /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2480            "LED",               /* all others */
2481            );                   /* R30, R31 */
2482
2483 static int __init led_init(struct ibm_init_struct *iibm)
2484 {
2485         vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2486
2487         IBM_ACPIHANDLE_INIT(led);
2488
2489         if (!led_handle)
2490                 /* led not supported on R30, R31 */
2491                 led_supported = TPACPI_LED_NONE;
2492         else if (strlencmp(led_path, "SLED") == 0)
2493                 /* 570 */
2494                 led_supported = TPACPI_LED_570;
2495         else if (strlencmp(led_path, "SYSL") == 0)
2496                 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2497                 led_supported = TPACPI_LED_OLD;
2498         else
2499                 /* all others */
2500                 led_supported = TPACPI_LED_NEW;
2501
2502         vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2503                 str_supported(led_supported), led_supported);
2504
2505         return (led_supported != TPACPI_LED_NONE)? 0 : 1;
2506 }
2507
2508 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2509
2510 static int led_read(char *p)
2511 {
2512         int len = 0;
2513
2514         if (!led_supported) {
2515                 len += sprintf(p + len, "status:\t\tnot supported\n");
2516                 return len;
2517         }
2518         len += sprintf(p + len, "status:\t\tsupported\n");
2519
2520         if (led_supported == TPACPI_LED_570) {
2521                 /* 570 */
2522                 int i, status;
2523                 for (i = 0; i < 8; i++) {
2524                         if (!acpi_evalf(ec_handle,
2525                                         &status, "GLED", "dd", 1 << i))
2526                                 return -EIO;
2527                         len += sprintf(p + len, "%d:\t\t%s\n",
2528                                        i, led_status(status));
2529                 }
2530         }
2531
2532         len += sprintf(p + len, "commands:\t"
2533                        "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
2534
2535         return len;
2536 }
2537
2538 /* off, on, blink */
2539 static const int led_sled_arg1[] = { 0, 1, 3 };
2540 static const int led_exp_hlbl[] = { 0, 0, 1 };  /* led# * */
2541 static const int led_exp_hlcl[] = { 0, 1, 1 };  /* led# * */
2542 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2543
2544 static int led_write(char *buf)
2545 {
2546         char *cmd;
2547         int led, ind, ret;
2548
2549         if (!led_supported)
2550                 return -ENODEV;
2551
2552         while ((cmd = next_cmd(&buf))) {
2553                 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
2554                         return -EINVAL;
2555
2556                 if (strstr(cmd, "off")) {
2557                         ind = 0;
2558                 } else if (strstr(cmd, "on")) {
2559                         ind = 1;
2560                 } else if (strstr(cmd, "blink")) {
2561                         ind = 2;
2562                 } else
2563                         return -EINVAL;
2564
2565                 if (led_supported == TPACPI_LED_570) {
2566                         /* 570 */
2567                         led = 1 << led;
2568                         if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2569                                         led, led_sled_arg1[ind]))
2570                                 return -EIO;
2571                 } else if (led_supported == TPACPI_LED_OLD) {
2572                         /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2573                         led = 1 << led;
2574                         ret = ec_write(TPACPI_LED_EC_HLMS, led);
2575                         if (ret >= 0)
2576                                 ret =
2577                                     ec_write(TPACPI_LED_EC_HLBL,
2578                                              led * led_exp_hlbl[ind]);
2579                         if (ret >= 0)
2580                                 ret =
2581                                     ec_write(TPACPI_LED_EC_HLCL,
2582                                              led * led_exp_hlcl[ind]);
2583                         if (ret < 0)
2584                                 return ret;
2585                 } else {
2586                         /* all others */
2587                         if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2588                                         led, led_led_arg1[ind]))
2589                                 return -EIO;
2590                 }
2591         }
2592
2593         return 0;
2594 }
2595
2596 static struct ibm_struct led_driver_data = {
2597         .name = "led",
2598         .read = led_read,
2599         .write = led_write,
2600 };
2601
2602 /*************************************************************************
2603  * Beep subdriver
2604  */
2605
2606 IBM_HANDLE(beep, ec, "BEEP");   /* all except R30, R31 */
2607
2608 static int __init beep_init(struct ibm_init_struct *iibm)
2609 {
2610         vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2611
2612         IBM_ACPIHANDLE_INIT(beep);
2613
2614         vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2615                 str_supported(beep_handle != NULL));
2616
2617         return (beep_handle)? 0 : 1;
2618 }
2619
2620 static int beep_read(char *p)
2621 {
2622         int len = 0;
2623
2624         if (!beep_handle)
2625                 len += sprintf(p + len, "status:\t\tnot supported\n");
2626         else {
2627                 len += sprintf(p + len, "status:\t\tsupported\n");
2628                 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2629         }
2630
2631         return len;
2632 }
2633
2634 static int beep_write(char *buf)
2635 {
2636         char *cmd;
2637         int beep_cmd;
2638
2639         if (!beep_handle)
2640                 return -ENODEV;
2641
2642         while ((cmd = next_cmd(&buf))) {
2643                 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2644                     beep_cmd >= 0 && beep_cmd <= 17) {
2645                         /* beep_cmd set */
2646                 } else
2647                         return -EINVAL;
2648                 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2649                         return -EIO;
2650         }
2651
2652         return 0;
2653 }
2654
2655 static struct ibm_struct beep_driver_data = {
2656         .name = "beep",
2657         .read = beep_read,
2658         .write = beep_write,
2659 };
2660
2661 /*************************************************************************
2662  * Thermal subdriver
2663  */
2664
2665 static enum thermal_access_mode thermal_read_mode;
2666
2667 /* sysfs temp##_input -------------------------------------------------- */
2668
2669 static ssize_t thermal_temp_input_show(struct device *dev,
2670                            struct device_attribute *attr,
2671                            char *buf)
2672 {
2673         struct sensor_device_attribute *sensor_attr =
2674                                         to_sensor_dev_attr(attr);
2675         int idx = sensor_attr->index;
2676         s32 value;
2677         int res;
2678
2679         res = thermal_get_sensor(idx, &value);
2680         if (res)
2681                 return res;
2682         if (value == TP_EC_THERMAL_TMP_NA * 1000)
2683                 return -ENXIO;
2684
2685         return snprintf(buf, PAGE_SIZE, "%d\n", value);
2686 }
2687
2688 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2689          SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2690
2691 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2692         THERMAL_SENSOR_ATTR_TEMP(1, 0),
2693         THERMAL_SENSOR_ATTR_TEMP(2, 1),
2694         THERMAL_SENSOR_ATTR_TEMP(3, 2),
2695         THERMAL_SENSOR_ATTR_TEMP(4, 3),
2696         THERMAL_SENSOR_ATTR_TEMP(5, 4),
2697         THERMAL_SENSOR_ATTR_TEMP(6, 5),
2698         THERMAL_SENSOR_ATTR_TEMP(7, 6),
2699         THERMAL_SENSOR_ATTR_TEMP(8, 7),
2700         THERMAL_SENSOR_ATTR_TEMP(9, 8),
2701         THERMAL_SENSOR_ATTR_TEMP(10, 9),
2702         THERMAL_SENSOR_ATTR_TEMP(11, 10),
2703         THERMAL_SENSOR_ATTR_TEMP(12, 11),
2704         THERMAL_SENSOR_ATTR_TEMP(13, 12),
2705         THERMAL_SENSOR_ATTR_TEMP(14, 13),
2706         THERMAL_SENSOR_ATTR_TEMP(15, 14),
2707         THERMAL_SENSOR_ATTR_TEMP(16, 15),
2708 };
2709
2710 #define THERMAL_ATTRS(X) \
2711         &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2712
2713 static struct attribute *thermal_temp_input_attr[] = {
2714         THERMAL_ATTRS(8),
2715         THERMAL_ATTRS(9),
2716         THERMAL_ATTRS(10),
2717         THERMAL_ATTRS(11),
2718         THERMAL_ATTRS(12),
2719         THERMAL_ATTRS(13),
2720         THERMAL_ATTRS(14),
2721         THERMAL_ATTRS(15),
2722         THERMAL_ATTRS(0),
2723         THERMAL_ATTRS(1),
2724         THERMAL_ATTRS(2),
2725         THERMAL_ATTRS(3),
2726         THERMAL_ATTRS(4),
2727         THERMAL_ATTRS(5),
2728         THERMAL_ATTRS(6),
2729         THERMAL_ATTRS(7),
2730         NULL
2731 };
2732
2733 static const struct attribute_group thermal_temp_input16_group = {
2734         .attrs = thermal_temp_input_attr
2735 };
2736
2737 static const struct attribute_group thermal_temp_input8_group = {
2738         .attrs = &thermal_temp_input_attr[8]
2739 };
2740
2741 #undef THERMAL_SENSOR_ATTR_TEMP
2742 #undef THERMAL_ATTRS
2743
2744 /* --------------------------------------------------------------------- */
2745
2746 static int __init thermal_init(struct ibm_init_struct *iibm)
2747 {
2748         u8 t, ta1, ta2;
2749         int i;
2750         int acpi_tmp7;
2751         int res;
2752
2753         vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2754
2755         acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
2756
2757         if (thinkpad_id.ec_model) {
2758                 /*
2759                  * Direct EC access mode: sensors at registers
2760                  * 0x78-0x7F, 0xC0-0xC7.  Registers return 0x00 for
2761                  * non-implemented, thermal sensors return 0x80 when
2762                  * not available
2763                  */
2764
2765                 ta1 = ta2 = 0;
2766                 for (i = 0; i < 8; i++) {
2767                         if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
2768                                 ta1 |= t;
2769                         } else {
2770                                 ta1 = 0;
2771                                 break;
2772                         }
2773                         if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
2774                                 ta2 |= t;
2775                         } else {
2776                                 ta1 = 0;
2777                                 break;
2778                         }
2779                 }
2780                 if (ta1 == 0) {
2781                         /* This is sheer paranoia, but we handle it anyway */
2782                         if (acpi_tmp7) {
2783                                 printk(IBM_ERR
2784                                        "ThinkPad ACPI EC access misbehaving, "
2785                                        "falling back to ACPI TMPx access mode\n");
2786                                 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2787                         } else {
2788                                 printk(IBM_ERR
2789                                        "ThinkPad ACPI EC access misbehaving, "
2790                                        "disabling thermal sensors access\n");
2791                                 thermal_read_mode = TPACPI_THERMAL_NONE;
2792                         }
2793                 } else {
2794                         thermal_read_mode =
2795                             (ta2 != 0) ?
2796                             TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
2797                 }
2798         } else if (acpi_tmp7) {
2799                 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2800                         /* 600e/x, 770e, 770x */
2801                         thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
2802                 } else {
2803                         /* Standard ACPI TMPx access, max 8 sensors */
2804                         thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2805                 }
2806         } else {
2807                 /* temperatures not supported on 570, G4x, R30, R31, R32 */
2808                 thermal_read_mode = TPACPI_THERMAL_NONE;
2809         }
2810
2811         vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2812                 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2813                 thermal_read_mode);
2814
2815         switch(thermal_read_mode) {
2816         case TPACPI_THERMAL_TPEC_16:
2817                 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2818                                 &thermal_temp_input16_group);
2819                 if (res)
2820                         return res;
2821                 break;
2822         case TPACPI_THERMAL_TPEC_8:
2823         case TPACPI_THERMAL_ACPI_TMP07:
2824         case TPACPI_THERMAL_ACPI_UPDT:
2825                 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2826                                 &thermal_temp_input8_group);
2827                 if (res)
2828                         return res;
2829                 break;
2830         case TPACPI_THERMAL_NONE:
2831         default:
2832                 return 1;
2833         }
2834
2835         return 0;
2836 }
2837
2838 static void thermal_exit(void)
2839 {
2840         switch(thermal_read_mode) {
2841         case TPACPI_THERMAL_TPEC_16:
2842                 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2843                                    &thermal_temp_input16_group);
2844                 break;
2845         case TPACPI_THERMAL_TPEC_8:
2846         case TPACPI_THERMAL_ACPI_TMP07:
2847         case TPACPI_THERMAL_ACPI_UPDT:
2848                 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2849                                    &thermal_temp_input16_group);
2850                 break;
2851         case TPACPI_THERMAL_NONE:
2852         default:
2853                 break;
2854         }
2855 }
2856
2857 /* idx is zero-based */
2858 static int thermal_get_sensor(int idx, s32 *value)
2859 {
2860         int t;
2861         s8 tmp;
2862         char tmpi[5];
2863
2864         t = TP_EC_THERMAL_TMP0;
2865
2866         switch (thermal_read_mode) {
2867 #if TPACPI_MAX_THERMAL_SENSORS >= 16
2868         case TPACPI_THERMAL_TPEC_16:
2869                 if (idx >= 8 && idx <= 15) {
2870                         t = TP_EC_THERMAL_TMP8;
2871                         idx -= 8;
2872                 }
2873                 /* fallthrough */
2874 #endif
2875         case TPACPI_THERMAL_TPEC_8:
2876                 if (idx <= 7) {
2877                         if (!acpi_ec_read(t + idx, &tmp))
2878                                 return -EIO;
2879                         *value = tmp * 1000;
2880                         return 0;
2881                 }
2882                 break;
2883
2884         case TPACPI_THERMAL_ACPI_UPDT:
2885                 if (idx <= 7) {
2886                         snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2887                         if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2888                                 return -EIO;
2889                         if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2890                                 return -EIO;
2891                         *value = (t - 2732) * 100;
2892                         return 0;
2893                 }
2894                 break;
2895
2896         case TPACPI_THERMAL_ACPI_TMP07:
2897                 if (idx <= 7) {
2898                         snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2899                         if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2900                                 return -EIO;
2901                         if (t > 127 || t < -127)
2902                                 t = TP_EC_THERMAL_TMP_NA;
2903                         *value = t * 1000;
2904                         return 0;
2905                 }
2906                 break;
2907
2908         case TPACPI_THERMAL_NONE:
2909         default:
2910                 return -ENOSYS;
2911         }
2912
2913         return -EINVAL;
2914 }
2915
2916 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2917 {
2918         int res, i;
2919         int n;
2920
2921         n = 8;
2922         i = 0;
2923
2924         if (!s)
2925                 return -EINVAL;
2926
2927         if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2928                 n = 16;
2929
2930         for(i = 0 ; i < n; i++) {
2931                 res = thermal_get_sensor(i, &s->temp[i]);
2932                 if (res)
2933                         return res;
2934         }
2935
2936         return n;
2937 }
2938
2939 static int thermal_read(char *p)
2940 {
2941         int len = 0;
2942         int n, i;
2943         struct ibm_thermal_sensors_struct t;
2944
2945         n = thermal_get_sensors(&t);
2946         if (unlikely(n < 0))
2947                 return n;
2948
2949         len += sprintf(p + len, "temperatures:\t");
2950
2951         if (n > 0) {
2952                 for (i = 0; i < (n - 1); i++)
2953                         len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2954                 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2955         } else
2956                 len += sprintf(p + len, "not supported\n");
2957
2958         return len;
2959 }
2960
2961 static struct ibm_struct thermal_driver_data = {
2962         .name = "thermal",
2963         .read = thermal_read,
2964         .exit = thermal_exit,
2965 };
2966
2967 /*************************************************************************
2968  * EC Dump subdriver
2969  */
2970
2971 static u8 ecdump_regs[256];
2972
2973 static int ecdump_read(char *p)
2974 {
2975         int len = 0;
2976         int i, j;
2977         u8 v;
2978
2979         len += sprintf(p + len, "EC      "
2980                        " +00 +01 +02 +03 +04 +05 +06 +07"
2981                        " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2982         for (i = 0; i < 256; i += 16) {
2983                 len += sprintf(p + len, "EC 0x%02x:", i);
2984                 for (j = 0; j < 16; j++) {
2985                         if (!acpi_ec_read(i + j, &v))
2986                                 break;
2987                         if (v != ecdump_regs[i + j])
2988                                 len += sprintf(p + len, " *%02x", v);
2989                         else
2990                                 len += sprintf(p + len, "  %02x", v);
2991                         ecdump_regs[i + j] = v;
2992                 }
2993                 len += sprintf(p + len, "\n");
2994                 if (j != 16)
2995                         break;
2996         }
2997
2998         /* These are way too dangerous to advertise openly... */
2999 #if 0
3000         len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3001                        " (<offset> is 00-ff, <value> is 00-ff)\n");
3002         len += sprintf(p + len, "commands:\t0x<offset> <value>  "
3003                        " (<offset> is 00-ff, <value> is 0-255)\n");
3004 #endif
3005         return len;
3006 }
3007
3008 static int ecdump_write(char *buf)
3009 {
3010         char *cmd;
3011         int i, v;
3012
3013         while ((cmd = next_cmd(&buf))) {
3014                 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3015                         /* i and v set */
3016                 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3017                         /* i and v set */
3018                 } else
3019                         return -EINVAL;
3020                 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3021                         if (!acpi_ec_write(i, v))
3022                                 return -EIO;
3023                 } else
3024                         return -EINVAL;
3025         }
3026
3027         return 0;
3028 }
3029
3030 static struct ibm_struct ecdump_driver_data = {
3031         .name = "ecdump",
3032         .read = ecdump_read,
3033         .write = ecdump_write,
3034         .flags.experimental = 1,
3035 };
3036
3037 /*************************************************************************
3038  * Backlight/brightness subdriver
3039  */
3040
3041 static struct backlight_device *ibm_backlight_device;
3042
3043 static struct backlight_ops ibm_backlight_data = {
3044         .get_brightness = brightness_get,
3045         .update_status  = brightness_update_status,
3046 };
3047
3048 static struct mutex brightness_mutex;
3049
3050 static int __init brightness_init(struct ibm_init_struct *iibm)
3051 {
3052         int b;
3053
3054         vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3055
3056         mutex_init(&brightness_mutex);
3057
3058         if (!brightness_mode) {
3059                 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3060                         brightness_mode = 2;
3061                 else
3062                         brightness_mode = 3;
3063
3064                 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3065                         brightness_mode);
3066         }
3067
3068         if (brightness_mode > 3)
3069                 return -EINVAL;
3070
3071         b = brightness_get(NULL);
3072         if (b < 0)
3073                 return 1;
3074
3075         ibm_backlight_device = backlight_device_register(
3076                                         TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3077                                         &ibm_backlight_data);
3078         if (IS_ERR(ibm_backlight_device)) {
3079                 printk(IBM_ERR "Could not register backlight device\n");
3080                 return PTR_ERR(ibm_backlight_device);
3081         }
3082         vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
3083
3084         ibm_backlight_device->props.max_brightness = 7;
3085         ibm_backlight_device->props.brightness = b;
3086         backlight_update_status(ibm_backlight_device);
3087
3088         return 0;
3089 }
3090
3091 static void brightness_exit(void)
3092 {
3093         if (ibm_backlight_device) {
3094                 vdbg_printk(TPACPI_DBG_EXIT,
3095                             "calling backlight_device_unregister()\n");
3096                 backlight_device_unregister(ibm_backlight_device);
3097                 ibm_backlight_device = NULL;
3098         }
3099 }
3100
3101 static int brightness_update_status(struct backlight_device *bd)
3102 {
3103         return brightness_set(
3104                 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3105                  bd->props.power == FB_BLANK_UNBLANK) ?
3106                                 bd->props.brightness : 0);
3107 }
3108
3109 /*
3110  * ThinkPads can read brightness from two places: EC 0x31, or
3111  * CMOS NVRAM byte 0x5E, bits 0-3.
3112  */
3113 static int brightness_get(struct backlight_device *bd)
3114 {
3115         u8 lec = 0, lcmos = 0, level = 0;
3116
3117         if (brightness_mode & 1) {
3118                 if (!acpi_ec_read(brightness_offset, &lec))
3119                         return -EIO;
3120                 lec &= 7;
3121                 level = lec;
3122         };
3123         if (brightness_mode & 2) {
3124                 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3125                          & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3126                         >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3127                 level = lcmos;
3128         }
3129
3130         if (brightness_mode == 3 && lec != lcmos) {
3131                 printk(IBM_ERR
3132                         "CMOS NVRAM (%u) and EC (%u) do not agree "
3133                         "on display brightness level\n",
3134                         (unsigned int) lcmos,
3135                         (unsigned int) lec);
3136                 return -EIO;
3137         }
3138
3139         return level;
3140 }
3141
3142 static int brightness_set(int value)
3143 {
3144         int cmos_cmd, inc, i, res;
3145         int current_value;
3146
3147         if (value > 7)
3148                 return -EINVAL;
3149
3150         res = mutex_lock_interruptible(&brightness_mutex);
3151         if (res < 0)
3152                 return res;
3153
3154         current_value = brightness_get(NULL);
3155         if (current_value < 0) {
3156                 res = current_value;
3157                 goto errout;
3158         }
3159
3160         cmos_cmd = value > current_value ?
3161                         TP_CMOS_BRIGHTNESS_UP :
3162                         TP_CMOS_BRIGHTNESS_DOWN;
3163         inc = value > current_value ? 1 : -1;
3164
3165         res = 0;
3166         for (i = current_value; i != value; i += inc) {
3167                 if ((brightness_mode & 2) &&
3168                     issue_thinkpad_cmos_command(cmos_cmd)) {
3169                         res = -EIO;
3170                         goto errout;
3171                 }
3172                 if ((brightness_mode & 1) &&
3173                     !acpi_ec_write(brightness_offset, i + inc)) {
3174                         res = -EIO;
3175                         goto errout;;
3176                 }
3177         }
3178
3179 errout:
3180         mutex_unlock(&brightness_mutex);
3181         return res;
3182 }
3183
3184 static int brightness_read(char *p)
3185 {
3186         int len = 0;
3187         int level;
3188
3189         if ((level = brightness_get(NULL)) < 0) {
3190                 len += sprintf(p + len, "level:\t\tunreadable\n");
3191         } else {
3192                 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
3193                 len += sprintf(p + len, "commands:\tup, down\n");
3194                 len += sprintf(p + len, "commands:\tlevel <level>"
3195                                " (<level> is 0-7)\n");
3196         }
3197
3198         return len;
3199 }
3200
3201 static int brightness_write(char *buf)
3202 {
3203         int level;
3204         int new_level;
3205         char *cmd;
3206
3207         while ((cmd = next_cmd(&buf))) {
3208                 if ((level = brightness_get(NULL)) < 0)
3209                         return level;
3210                 level &= 7;
3211
3212                 if (strlencmp(cmd, "up") == 0) {
3213                         new_level = level == 7 ? 7 : level + 1;
3214                 } else if (strlencmp(cmd, "down") == 0) {
3215                         new_level = level == 0 ? 0 : level - 1;
3216                 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3217                            new_level >= 0 && new_level <= 7) {
3218                         /* new_level set */
3219                 } else
3220                         return -EINVAL;
3221
3222                 brightness_set(new_level);
3223         }
3224
3225         return 0;
3226 }
3227
3228 static struct ibm_struct brightness_driver_data = {
3229         .name = "brightness",
3230         .read = brightness_read,
3231         .write = brightness_write,
3232         .exit = brightness_exit,
3233 };
3234
3235 /*************************************************************************
3236  * Volume subdriver
3237  */
3238
3239 static int volume_read(char *p)
3240 {
3241         int len = 0;
3242         u8 level;
3243
3244         if (!acpi_ec_read(volume_offset, &level)) {
3245                 len += sprintf(p + len, "level:\t\tunreadable\n");
3246         } else {
3247                 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3248                 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3249                 len += sprintf(p + len, "commands:\tup, down, mute\n");
3250                 len += sprintf(p + len, "commands:\tlevel <level>"
3251                                " (<level> is 0-15)\n");
3252         }
3253
3254         return len;
3255 }
3256
3257 static int volume_write(char *buf)
3258 {
3259         int cmos_cmd, inc, i;
3260         u8 level, mute;
3261         int new_level, new_mute;
3262         char *cmd;
3263
3264         while ((cmd = next_cmd(&buf))) {
3265                 if (!acpi_ec_read(volume_offset, &level))
3266                         return -EIO;
3267                 new_mute = mute = level & 0x40;
3268                 new_level = level = level & 0xf;
3269
3270                 if (strlencmp(cmd, "up") == 0) {
3271                         if (mute)
3272                                 new_mute = 0;
3273                         else
3274                                 new_level = level == 15 ? 15 : level + 1;
3275                 } else if (strlencmp(cmd, "down") == 0) {
3276                         if (mute)
3277                                 new_mute = 0;
3278                         else
3279                                 new_level = level == 0 ? 0 : level - 1;
3280                 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3281                            new_level >= 0 && new_level <= 15) {
3282                         /* new_level set */
3283                 } else if (strlencmp(cmd, "mute") == 0) {
3284                         new_mute = 0x40;
3285                 } else
3286                         return -EINVAL;
3287
3288                 if (new_level != level) {       /* mute doesn't change */
3289                         cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
3290                         inc = new_level > level ? 1 : -1;
3291
3292                         if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
3293                                      !acpi_ec_write(volume_offset, level)))
3294                                 return -EIO;
3295
3296                         for (i = level; i != new_level; i += inc)
3297                                 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3298                                     !acpi_ec_write(volume_offset, i + inc))
3299                                         return -EIO;
3300
3301                         if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
3302                                      !acpi_ec_write(volume_offset,
3303                                                     new_level + mute)))
3304                                 return -EIO;
3305                 }
3306
3307                 if (new_mute != mute) { /* level doesn't change */
3308                         cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
3309
3310                         if (issue_thinkpad_cmos_command(cmos_cmd) ||
3311                             !acpi_ec_write(volume_offset, level + new_mute))
3312                                 return -EIO;
3313                 }
3314         }
3315
3316         return 0;
3317 }
3318
3319 static struct ibm_struct volume_driver_data = {
3320         .name = "volume",
3321         .read = volume_read,
3322         .write = volume_write,
3323 };
3324
3325 /*************************************************************************
3326  * Fan subdriver
3327  */
3328
3329 /*
3330  * FAN ACCESS MODES
3331  *
3332  * TPACPI_FAN_RD_ACPI_GFAN:
3333  *      ACPI GFAN method: returns fan level
3334  *
3335  *      see TPACPI_FAN_WR_ACPI_SFAN
3336  *      EC 0x2f (HFSP) not available if GFAN exists
3337  *
3338  * TPACPI_FAN_WR_ACPI_SFAN:
3339  *      ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3340  *
3341  *      EC 0x2f (HFSP) might be available *for reading*, but do not use
3342  *      it for writing.
3343  *
3344  * TPACPI_FAN_WR_TPEC:
3345  *      ThinkPad EC register 0x2f (HFSP): fan control loop mode
3346  *      Supported on almost all ThinkPads
3347  *
3348  *      Fan speed changes of any sort (including those caused by the
3349  *      disengaged mode) are usually done slowly by the firmware as the
3350  *      maximum ammount of fan duty cycle change per second seems to be
3351  *      limited.
3352  *
3353  *      Reading is not available if GFAN exists.
3354  *      Writing is not available if SFAN exists.
3355  *
3356  *      Bits
3357  *       7      automatic mode engaged;
3358  *              (default operation mode of the ThinkPad)
3359  *              fan level is ignored in this mode.
3360  *       6      full speed mode (takes precedence over bit 7);
3361  *              not available on all thinkpads.  May disable
3362  *              the tachometer while the fan controller ramps up
3363  *              the speed (which can take up to a few *minutes*).
3364  *              Speeds up fan to 100% duty-cycle, which is far above
3365  *              the standard RPM levels.  It is not impossible that
3366  *              it could cause hardware damage.
3367  *      5-3     unused in some models.  Extra bits for fan level
3368  *              in others, but still useless as all values above
3369  *              7 map to the same speed as level 7 in these models.
3370  *      2-0     fan level (0..7 usually)
3371  *                      0x00 = stop
3372  *                      0x07 = max (set when temperatures critical)
3373  *              Some ThinkPads may have other levels, see
3374  *              TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
3375  *
3376  *      FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3377  *      boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3378  *      does so, its initial value is meaningless (0x07).
3379  *
3380  *      For firmware bugs, refer to:
3381  *      http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3382  *
3383  *      ----
3384  *
3385  *      ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3386  *      Main fan tachometer reading (in RPM)
3387  *
3388  *      This register is present on all ThinkPads with a new-style EC, and
3389  *      it is known not to be present on the A21m/e, and T22, as there is
3390  *      something else in offset 0x84 according to the ACPI DSDT.  Other
3391  *      ThinkPads from this same time period (and earlier) probably lack the
3392  *      tachometer as well.
3393  *
3394  *      Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3395  *      was never fixed by IBM to report the EC firmware version string
3396  *      probably support the tachometer (like the early X models), so
3397  *      detecting it is quite hard.  We need more data to know for sure.
3398  *
3399  *      FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3400  *      might result.
3401  *
3402  *      FIRMWARE BUG: may go stale while the EC is switching to full speed
3403  *      mode.
3404  *
3405  *      For firmware bugs, refer to:
3406  *      http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3407  *
3408  * TPACPI_FAN_WR_ACPI_FANS:
3409  *      ThinkPad X31, X40, X41.  Not available in the X60.
3410  *
3411  *      FANS ACPI handle: takes three arguments: low speed, medium speed,
3412  *      high speed.  ACPI DSDT seems to map these three speeds to levels
3413  *      as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3414  *      (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3415  *
3416  *      The speeds are stored on handles
3417  *      (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3418  *
3419  *      There are three default speed sets, acessible as handles:
3420  *      FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3421  *
3422  *      ACPI DSDT switches which set is in use depending on various
3423  *      factors.
3424  *
3425  *      TPACPI_FAN_WR_TPEC is also available and should be used to
3426  *      command the fan.  The X31/X40/X41 seems to have 8 fan levels,
3427  *      but the ACPI tables just mention level 7.
3428  */
3429
3430 static enum fan_status_access_mode fan_status_access_mode;
3431 static enum fan_control_access_mode fan_control_access_mode;
3432 static enum fan_control_commands fan_control_commands;
3433
3434 static u8 fan_control_initial_status;
3435 static u8 fan_control_desired_level;
3436
3437 static void fan_watchdog_fire(struct work_struct *ignored);
3438 static int fan_watchdog_maxinterval;
3439 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
3440
3441 IBM_HANDLE(fans, ec, "FANS");   /* X31, X40, X41 */
3442 IBM_HANDLE(gfan, ec, "GFAN",    /* 570 */
3443            "\\FSPD",            /* 600e/x, 770e, 770x */
3444            );                   /* all others */
3445 IBM_HANDLE(sfan, ec, "SFAN",    /* 570 */
3446            "JFNS",              /* 770x-JL */
3447            );                   /* all others */
3448
3449 /*
3450  * SYSFS fan layout: hwmon compatible (device)
3451  *
3452  * pwm*_enable:
3453  *      0: "disengaged" mode
3454  *      1: manual mode
3455  *      2: native EC "auto" mode (recommended, hardware default)
3456  *
3457  * pwm*: set speed in manual mode, ignored otherwise.
3458  *      0 is level 0; 255 is level 7. Intermediate points done with linear
3459  *      interpolation.
3460  *
3461  * fan*_input: tachometer reading, RPM
3462  *
3463  *
3464  * SYSFS fan layout: extensions
3465  *
3466  * fan_watchdog (driver):
3467  *      fan watchdog interval in seconds, 0 disables (default), max 120
3468  */
3469
3470 /* sysfs fan pwm1_enable ----------------------------------------------- */
3471 static ssize_t fan_pwm1_enable_show(struct device *dev,
3472                                     struct device_attribute *attr,
3473                                     char *buf)
3474 {
3475         int res, mode;
3476         u8 status;
3477
3478         res = fan_get_status_safe(&status);
3479         if (res)
3480                 return res;
3481
3482         if (unlikely(tp_features.fan_ctrl_status_undef)) {
3483                 if (status != fan_control_initial_status) {
3484                         tp_features.fan_ctrl_status_undef = 0;
3485                 } else {
3486                         /* Return most likely status. In fact, it
3487                          * might be the only possible status */
3488                         status = TP_EC_FAN_AUTO;
3489                 }
3490         }
3491
3492         if (status & TP_EC_FAN_FULLSPEED) {
3493                 mode = 0;
3494         } else if (status & TP_EC_FAN_AUTO) {
3495                 mode = 2;
3496         } else
3497                 mode = 1;
3498
3499         return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3500 }
3501
3502 static ssize_t fan_pwm1_enable_store(struct device *dev,
3503                                      struct device_attribute *attr,
3504                                      const char *buf, size_t count)
3505 {
3506         unsigned long t;
3507         int res, level;
3508
3509         if (parse_strtoul(buf, 2, &t))
3510                 return -EINVAL;
3511
3512         switch (t) {
3513         case 0:
3514                 level = TP_EC_FAN_FULLSPEED;
3515                 break;
3516         case 1:
3517                 level = TPACPI_FAN_LAST_LEVEL;
3518                 break;
3519         case 2:
3520                 level = TP_EC_FAN_AUTO;
3521                 break;
3522         case 3:
3523                 /* reserved for software-controlled auto mode */
3524                 return -ENOSYS;
3525         default:
3526                 return -EINVAL;
3527         }
3528
3529         res = fan_set_level_safe(level);
3530         if (res == -ENXIO)
3531                 return -EINVAL;
3532         else if (res < 0)
3533                 return res;
3534
3535         fan_watchdog_reset();
3536
3537         return count;
3538 }
3539
3540 static struct device_attribute dev_attr_fan_pwm1_enable =
3541         __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3542                 fan_pwm1_enable_show, fan_pwm1_enable_store);
3543
3544 /* sysfs fan pwm1 ------------------------------------------------------ */
3545 static ssize_t fan_pwm1_show(struct device *dev,
3546                              struct device_attribute *attr,
3547                              char *buf)
3548 {
3549         int res;
3550         u8 status;
3551
3552         res = fan_get_status_safe(&status);
3553         if (res)
3554                 return res;
3555
3556         if (unlikely(tp_features.fan_ctrl_status_undef)) {
3557                 if (status != fan_control_initial_status) {
3558                         tp_features.fan_ctrl_status_undef = 0;
3559                 } else {
3560                         status = TP_EC_FAN_AUTO;
3561                 }
3562         }
3563
3564         if ((status &
3565              (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3566                 status = fan_control_desired_level;
3567
3568         if (status > 7)
3569                 status = 7;
3570
3571         return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3572 }
3573
3574 static ssize_t fan_pwm1_store(struct device *dev,
3575                               struct device_attribute *attr,
3576                               const char *buf, size_t count)
3577 {
3578         unsigned long s;
3579         int rc;
3580         u8 status, newlevel;
3581
3582         if (parse_strtoul(buf, 255, &s))
3583                 return -EINVAL;
3584
3585         /* scale down from 0-255 to 0-7 */
3586         newlevel = (s >> 5) & 0x07;
3587
3588         rc = mutex_lock_interruptible(&fan_mutex);
3589         if (rc < 0)
3590                 return rc;
3591
3592         rc = fan_get_status(&status);
3593         if (!rc && (status &
3594                     (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3595                 rc = fan_set_level(newlevel);
3596                 if (rc == -ENXIO)
3597                         rc = -EINVAL;
3598                 else if (!rc) {
3599                         fan_update_desired_level(newlevel);
3600                         fan_watchdog_reset();
3601                 }
3602         }
3603
3604         mutex_unlock(&fan_mutex);
3605         return (rc)? rc : count;
3606 }
3607
3608 static struct device_attribute dev_attr_fan_pwm1 =
3609         __ATTR(pwm1, S_IWUSR | S_IRUGO,
3610                 fan_pwm1_show, fan_pwm1_store);
3611
3612 /* sysfs fan fan1_input ------------------------------------------------ */
3613 static ssize_t fan_fan1_input_show(struct device *dev,
3614                            struct device_attribute *attr,
3615                            char *buf)
3616 {
3617         int res;
3618         unsigned int speed;
3619
3620         res = fan_get_speed(&speed);
3621         if (res < 0)
3622                 return res;
3623
3624         return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3625 }
3626
3627 static struct device_attribute dev_attr_fan_fan1_input =
3628         __ATTR(fan1_input, S_IRUGO,
3629                 fan_fan1_input_show, NULL);
3630
3631 /* sysfs fan fan_watchdog (driver) ------------------------------------- */
3632 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3633                                      char *buf)
3634 {
3635         return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3636 }
3637
3638 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3639                                       const char *buf, size_t count)
3640 {
3641         unsigned long t;
3642
3643         if (parse_strtoul(buf, 120, &t))
3644                 return -EINVAL;
3645
3646         if (!fan_control_allowed)
3647                 return -EPERM;
3648
3649         fan_watchdog_maxinterval = t;
3650         fan_watchdog_reset();
3651
3652         return count;
3653 }
3654
3655 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3656                 fan_fan_watchdog_show, fan_fan_watchdog_store);
3657
3658 /* --------------------------------------------------------------------- */
3659 static struct attribute *fan_attributes[] = {
3660         &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3661         &dev_attr_fan_fan1_input.attr,
3662         NULL
3663 };
3664
3665 static const struct attribute_group fan_attr_group = {
3666         .attrs = fan_attributes,
3667 };
3668
3669 static int __init fan_init(struct ibm_init_struct *iibm)
3670 {
3671         int rc;
3672
3673         vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3674
3675         mutex_init(&fan_mutex);
3676         fan_status_access_mode = TPACPI_FAN_NONE;
3677         fan_control_access_mode = TPACPI_FAN_WR_NONE;
3678         fan_control_commands = 0;
3679         fan_watchdog_maxinterval = 0;
3680         tp_features.fan_ctrl_status_undef = 0;
3681         fan_control_desired_level = 7;
3682
3683         IBM_ACPIHANDLE_INIT(fans);
3684         IBM_ACPIHANDLE_INIT(gfan);
3685         IBM_ACPIHANDLE_INIT(sfan);
3686
3687         if (gfan_handle) {
3688                 /* 570, 600e/x, 770e, 770x */
3689                 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
3690         } else {
3691                 /* all other ThinkPads: note that even old-style
3692                  * ThinkPad ECs supports the fan control register */
3693                 if (likely(acpi_ec_read(fan_status_offset,
3694                                         &fan_control_initial_status))) {
3695                         fan_status_access_mode = TPACPI_FAN_RD_TPEC;
3696
3697                         /* In some ThinkPads, neither the EC nor the ACPI
3698                          * DSDT initialize the fan status, and it ends up
3699                          * being set to 0x07 when it *could* be either
3700                          * 0x07 or 0x80.
3701                          *
3702                          * Enable for TP-1Y (T43), TP-78 (R51e),
3703                          * TP-76 (R52), TP-70 (T43, R52), which are known
3704                          * to be buggy. */
3705                         if (fan_control_initial_status == 0x07) {
3706                                 switch (thinkpad_id.ec_model) {
3707                                 case 0x5931: /* TP-1Y */
3708                                 case 0x3837: /* TP-78 */
3709                                 case 0x3637: /* TP-76 */
3710                                 case 0x3037: /* TP-70 */
3711                                         printk(IBM_NOTICE
3712                                                "fan_init: initial fan status is "
3713                                                "unknown, assuming it is in auto "
3714                                                "mode\n");
3715                                         tp_features.fan_ctrl_status_undef = 1;
3716                                         ;;
3717                                 }
3718                         }
3719                 } else {
3720                         printk(IBM_ERR
3721                                "ThinkPad ACPI EC access misbehaving, "
3722                                "fan status and control unavailable\n");
3723                         return 1;
3724                 }
3725         }
3726
3727         if (sfan_handle) {
3728                 /* 570, 770x-JL */
3729                 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
3730                 fan_control_commands |=
3731                     TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
3732         } else {
3733                 if (!gfan_handle) {
3734                         /* gfan without sfan means no fan control */
3735                         /* all other models implement TP EC 0x2f control */
3736
3737                         if (fans_handle) {
3738                                 /* X31, X40, X41 */
3739                                 fan_control_access_mode =
3740                                     TPACPI_FAN_WR_ACPI_FANS;
3741                                 fan_control_commands |=
3742                                     TPACPI_FAN_CMD_SPEED |
3743                                     TPACPI_FAN_CMD_LEVEL |
3744                                     TPACPI_FAN_CMD_ENABLE;
3745                         } else {
3746                                 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
3747                                 fan_control_commands |=
3748                                     TPACPI_FAN_CMD_LEVEL |
3749                                     TPACPI_FAN_CMD_ENABLE;
3750                         }
3751                 }
3752         }
3753
3754         vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3755                 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3756                   fan_control_access_mode != TPACPI_FAN_WR_NONE),
3757                 fan_status_access_mode, fan_control_access_mode);
3758
3759         /* fan control master switch */
3760         if (!fan_control_allowed) {
3761                 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3762                 fan_control_commands = 0;
3763                 dbg_printk(TPACPI_DBG_INIT,
3764                            "fan control features disabled by parameter\n");
3765         }
3766
3767         /* update fan_control_desired_level */
3768         if (fan_status_access_mode != TPACPI_FAN_NONE)
3769                 fan_get_status_safe(NULL);
3770
3771         if (fan_status_access_mode != TPACPI_FAN_NONE ||
3772             fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3773                 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3774                                          &fan_attr_group);
3775                 if (!(rc < 0))
3776                         rc = driver_create_file(&tpacpi_pdriver.driver,
3777                                         &driver_attr_fan_watchdog);
3778                 if (rc < 0)
3779                         return rc;
3780                 return 0;
3781         } else
3782                 return 1;
3783 }
3784
3785 /*
3786  * Call with fan_mutex held
3787  */
3788 static void fan_update_desired_level(u8 status)
3789 {
3790         if ((status &
3791              (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3792                 if (status > 7)
3793                         fan_control_desired_level = 7;
3794                 else
3795                         fan_control_desired_level = status;
3796         }
3797 }
3798
3799 static int fan_get_status(u8 *status)
3800 {
3801         u8 s;
3802
3803         /* TODO:
3804          * Add TPACPI_FAN_RD_ACPI_FANS ? */
3805
3806         switch (fan_status_access_mode) {
3807         case TPACPI_FAN_RD_ACPI_GFAN:
3808                 /* 570, 600e/x, 770e, 770x */
3809
3810                 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
3811                         return -EIO;
3812
3813                 if (likely(status))
3814                         *status = s & 0x07;
3815
3816                 break;
3817
3818         case TPACPI_FAN_RD_TPEC:
3819                 /* all except 570, 600e/x, 770e, 770x */
3820                 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3821                         return -EIO;
3822
3823                 if (likely(status))
3824                         *status = s;
3825
3826                 break;
3827
3828         default:
3829                 return -ENXIO;
3830         }
3831
3832         return 0;
3833 }
3834
3835 static int fan_get_status_safe(u8 *status)
3836 {
3837         int rc;
3838         u8 s;
3839
3840         rc = mutex_lock_interruptible(&fan_mutex);
3841         if (rc < 0)
3842                 return rc;
3843         rc = fan_get_status(&s);
3844         if (!rc)
3845                 fan_update_desired_level(s);
3846         mutex_unlock(&fan_mutex);
3847
3848         if (status)
3849                 *status = s;
3850
3851         return rc;
3852 }
3853
3854 static void fan_exit(void)
3855 {
3856         vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
3857
3858         /* FIXME: can we really do this unconditionally? */
3859         sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3860         driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3861
3862         cancel_delayed_work(&fan_watchdog_task);
3863         flush_scheduled_work();
3864 }
3865
3866 static int fan_get_speed(unsigned int *speed)
3867 {
3868         u8 hi, lo;
3869
3870         switch (fan_status_access_mode) {
3871         case TPACPI_FAN_RD_TPEC:
3872                 /* all except 570, 600e/x, 770e, 770x */
3873                 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3874                              !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3875                         return -EIO;
3876
3877                 if (likely(speed))
3878                         *speed = (hi << 8) | lo;
3879
3880                 break;
3881
3882         default:
3883                 return -ENXIO;
3884         }
3885
3886         return 0;
3887 }
3888
3889 static void fan_watchdog_fire(struct work_struct *ignored)
3890 {
3891         int rc;
3892
3893         printk(IBM_NOTICE "fan watchdog: enabling fan\n");
3894         rc = fan_set_enable();
3895         if (rc < 0) {
3896                 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3897                         "will try again later...\n", -rc);
3898                 /* reschedule for later */
3899                 fan_watchdog_reset();
3900         }
3901 }
3902
3903 static void fan_watchdog_reset(void)
3904 {
3905         static int fan_watchdog_active;
3906
3907         if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3908                 return;
3909
3910         if (fan_watchdog_active)
3911                 cancel_delayed_work(&fan_watchdog_task);
3912
3913         if (fan_watchdog_maxinterval > 0) {
3914                 fan_watchdog_active = 1;
3915                 if (!schedule_delayed_work(&fan_watchdog_task,
3916                                 msecs_to_jiffies(fan_watchdog_maxinterval
3917                                                  * 1000))) {
3918                         printk(IBM_ERR "failed to schedule the fan watchdog, "
3919                                "watchdog will not trigger\n");
3920                 }
3921         } else
3922                 fan_watchdog_active = 0;
3923 }
3924
3925 static int fan_set_level(int level)
3926 {
3927         if (!fan_control_allowed)
3928                 return -EPERM;
3929
3930         switch (fan_control_access_mode) {
3931         case TPACPI_FAN_WR_ACPI_SFAN:
3932                 if (level >= 0 && level <= 7) {
3933                         if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
3934                                 return -EIO;
3935                 } else
3936                         return -EINVAL;
3937                 break;
3938
3939         case TPACPI_FAN_WR_ACPI_FANS:
3940         case TPACPI_FAN_WR_TPEC:
3941                 if ((level != TP_EC_FAN_AUTO) &&
3942                     (level != TP_EC_FAN_FULLSPEED) &&
3943                     ((level < 0) || (level > 7)))
3944                         return -EINVAL;
3945
3946                 /* safety net should the EC not support AUTO
3947                  * or FULLSPEED mode bits and just ignore them */
3948                 if (level & TP_EC_FAN_FULLSPEED)
3949                         level |= 7;     /* safety min speed 7 */
3950                 else if (level & TP_EC_FAN_FULLSPEED)
3951                         level |= 4;     /* safety min speed 4 */
3952
3953                 if (!acpi_ec_write(fan_status_offset, level))
3954                         return -EIO;
3955                 else
3956                         tp_features.fan_ctrl_status_undef = 0;
3957                 break;
3958
3959         default:
3960                 return -ENXIO;
3961         }
3962         return 0;
3963 }
3964
3965 static int fan_set_level_safe(int level)
3966 {
3967         int rc;
3968
3969         if (!fan_control_allowed)
3970                 return -EPERM;
3971
3972         rc = mutex_lock_interruptible(&fan_mutex);
3973         if (rc < 0)
3974                 return rc;
3975
3976         if (level == TPACPI_FAN_LAST_LEVEL)
3977                 level = fan_control_desired_level;
3978
3979         rc = fan_set_level(level);
3980         if (!rc)
3981                 fan_update_desired_level(level);
3982
3983         mutex_unlock(&fan_mutex);
3984         return rc;
3985 }
3986
3987 static int fan_set_enable(void)
3988 {
3989         u8 s;
3990         int rc;
3991
3992         if (!fan_control_allowed)
3993                 return -EPERM;
3994
3995         rc = mutex_lock_interruptible(&fan_mutex);
3996         if (rc < 0)
3997                 return rc;
3998
3999         switch (fan_control_access_mode) {
4000         case TPACPI_FAN_WR_ACPI_FANS:
4001         case TPACPI_FAN_WR_TPEC:
4002                 rc = fan_get_status(&s);
4003                 if (rc < 0)
4004                         break;
4005
4006                 /* Don't go out of emergency fan mode */
4007                 if (s != 7) {
4008                         s &= 0x07;
4009                         s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4010                 }
4011
4012                 if (!acpi_ec_write(fan_status_offset, s))
4013                         rc = -EIO;
4014                 else {
4015                         tp_features.fan_ctrl_status_undef = 0;
4016                         rc = 0;
4017                 }
4018                 break;
4019
4020         case TPACPI_FAN_WR_ACPI_SFAN:
4021                 rc = fan_get_status(&s);
4022                 if (rc < 0)
4023                         break;
4024
4025                 s &= 0x07;
4026
4027                 /* Set fan to at least level 4 */
4028                 s |= 4;
4029
4030                 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
4031                         rc= -EIO;
4032                 else
4033                         rc = 0;
4034                 break;
4035
4036         default:
4037                 rc = -ENXIO;
4038         }
4039
4040         mutex_unlock(&fan_mutex);
4041         return rc;
4042 }
4043
4044 static int fan_set_disable(void)
4045 {
4046         int rc;
4047
4048         if (!fan_control_allowed)
4049                 return -EPERM;
4050
4051         rc = mutex_lock_interruptible(&fan_mutex);
4052         if (rc < 0)
4053                 return rc;
4054
4055         rc = 0;
4056         switch (fan_control_access_mode) {
4057         case TPACPI_FAN_WR_ACPI_FANS:
4058         case TPACPI_FAN_WR_TPEC:
4059                 if (!acpi_ec_write(fan_status_offset, 0x00))
4060                         rc = -EIO;
4061                 else {
4062                         fan_control_desired_level = 0;
4063                         tp_features.fan_ctrl_status_undef = 0;
4064                 }
4065                 break;
4066
4067         case TPACPI_FAN_WR_ACPI_SFAN:
4068                 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
4069                         rc = -EIO;
4070                 else
4071                         fan_control_desired_level = 0;
4072                 break;
4073
4074         default:
4075                 rc = -ENXIO;
4076         }
4077
4078
4079         mutex_unlock(&fan_mutex);
4080         return rc;
4081 }
4082
4083 static int fan_set_speed(int speed)
4084 {
4085         int rc;
4086
4087         if (!fan_control_allowed)
4088                 return -EPERM;
4089
4090         rc = mutex_lock_interruptible(&fan_mutex);
4091         if (rc < 0)
4092                 return rc;
4093
4094         rc = 0;
4095         switch (fan_control_access_mode) {
4096         case TPACPI_FAN_WR_ACPI_FANS:
4097                 if (speed >= 0 && speed <= 65535) {
4098                         if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4099                                         speed, speed, speed))
4100                                 rc = -EIO;
4101                 } else
4102                         rc = -EINVAL;
4103                 break;
4104
4105         default:
4106                 rc = -ENXIO;
4107         }
4108
4109         mutex_unlock(&fan_mutex);
4110         return rc;
4111 }
4112
4113 static int fan_read(char *p)
4114 {
4115         int len = 0;
4116         int rc;
4117         u8 status;
4118         unsigned int speed = 0;
4119
4120         switch (fan_status_access_mode) {
4121         case TPACPI_FAN_RD_ACPI_GFAN:
4122                 /* 570, 600e/x, 770e, 770x */
4123                 if ((rc = fan_get_status_safe(&status)) < 0)
4124                         return rc;
4125
4126                 len += sprintf(p + len, "status:\t\t%s\n"
4127                                "level:\t\t%d\n",
4128                                (status != 0) ? "enabled" : "disabled", status);
4129                 break;
4130
4131         case TPACPI_FAN_RD_TPEC:
4132                 /* all except 570, 600e/x, 770e, 770x */
4133                 if ((rc = fan_get_status_safe(&status)) < 0)
4134                         return rc;
4135
4136                 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4137                         if (status != fan_control_initial_status)
4138                                 tp_features.fan_ctrl_status_undef = 0;
4139                         else
4140                                 /* Return most likely status. In fact, it
4141                                  * might be the only possible status */
4142                                 status = TP_EC_FAN_AUTO;
4143                 }
4144
4145                 len += sprintf(p + len, "status:\t\t%s\n",
4146                                (status != 0) ? "enabled" : "disabled");
4147
4148                 if ((rc = fan_get_speed(&speed)) < 0)
4149                         return rc;
4150
4151                 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4152
4153                 if (status & TP_EC_FAN_FULLSPEED)
4154                         /* Disengaged mode takes precedence */
4155                         len += sprintf(p + len, "level:\t\tdisengaged\n");
4156                 else if (status & TP_EC_FAN_AUTO)
4157                         len += sprintf(p + len, "level:\t\tauto\n");
4158                 else
4159                         len += sprintf(p + len, "level:\t\t%d\n", status);
4160                 break;
4161
4162         case TPACPI_FAN_NONE:
4163         default:
4164                 len += sprintf(p + len, "status:\t\tnot supported\n");
4165         }
4166
4167         if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
4168                 len += sprintf(p + len, "commands:\tlevel <level>");
4169
4170                 switch (fan_control_access_mode) {
4171                 case TPACPI_FAN_WR_ACPI_SFAN:
4172                         len += sprintf(p + len, " (<level> is 0-7)\n");
4173                         break;
4174
4175                 default:
4176                         len += sprintf(p + len, " (<level> is 0-7, "
4177                                        "auto, disengaged, full-speed)\n");
4178                         break;
4179                 }
4180         }
4181
4182         if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
4183                 len += sprintf(p + len, "commands:\tenable, disable\n"
4184                                "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4185                                "1-120 (seconds))\n");
4186
4187         if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
4188                 len += sprintf(p + len, "commands:\tspeed <speed>"
4189                                " (<speed> is 0-65535)\n");
4190
4191         return len;
4192 }
4193
4194 static int fan_write_cmd_level(const char *cmd, int *rc)
4195 {
4196         int level;
4197
4198         if (strlencmp(cmd, "level auto") == 0)
4199                 level = TP_EC_FAN_AUTO;
4200         else if ((strlencmp(cmd, "level disengaged") == 0) |
4201                  (strlencmp(cmd, "level full-speed") == 0))
4202                 level = TP_EC_FAN_FULLSPEED;
4203         else if (sscanf(cmd, "level %d", &level) != 1)
4204                 return 0;
4205
4206         if ((*rc = fan_set_level_safe(level)) == -ENXIO)
4207                 printk(IBM_ERR "level command accepted for unsupported "
4208                        "access mode %d", fan_control_access_mode);
4209
4210         return 1;
4211 }
4212
4213 static int fan_write_cmd_enable(const char *cmd, int *rc)
4214 {
4215         if (strlencmp(cmd, "enable") != 0)
4216                 return 0;
4217
4218         if ((*rc = fan_set_enable()) == -ENXIO)
4219                 printk(IBM_ERR "enable command accepted for unsupported "
4220                        "access mode %d", fan_control_access_mode);
4221
4222         return 1;
4223 }
4224
4225 static int fan_write_cmd_disable(const char *cmd, int *rc)
4226 {
4227         if (strlencmp(cmd, "disable") != 0)
4228                 return 0;
4229
4230         if ((*rc = fan_set_disable()) == -ENXIO)
4231                 printk(IBM_ERR "disable command accepted for unsupported "
4232                        "access mode %d", fan_control_access_mode);
4233
4234         return 1;
4235 }
4236
4237 static int fan_write_cmd_speed(const char *cmd, int *rc)
4238 {
4239         int speed;
4240
4241         /* TODO:
4242          * Support speed <low> <medium> <high> ? */
4243
4244         if (sscanf(cmd, "speed %d", &speed) != 1)
4245                 return 0;
4246
4247         if ((*rc = fan_set_speed(speed)) == -ENXIO)
4248                 printk(IBM_ERR "speed command accepted for unsupported "
4249                        "access mode %d", fan_control_access_mode);
4250
4251         return 1;
4252 }
4253
4254 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4255 {
4256         int interval;
4257
4258         if (sscanf(cmd, "watchdog %d", &interval) != 1)
4259                 return 0;
4260
4261         if (interval < 0 || interval > 120)
4262                 *rc = -EINVAL;
4263         else
4264                 fan_watchdog_maxinterval = interval;
4265
4266         return 1;
4267 }
4268
4269 static int fan_write(char *buf)
4270 {
4271         char *cmd;
4272         int rc = 0;
4273
4274         while (!rc && (cmd = next_cmd(&buf))) {
4275                 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
4276                       fan_write_cmd_level(cmd, &rc)) &&
4277                     !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
4278                       (fan_write_cmd_enable(cmd, &rc) ||
4279                        fan_write_cmd_disable(cmd, &rc) ||
4280                        fan_write_cmd_watchdog(cmd, &rc))) &&
4281                     !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
4282                       fan_write_cmd_speed(cmd, &rc))
4283                     )
4284                         rc = -EINVAL;
4285                 else if (!rc)
4286                         fan_watchdog_reset();
4287         }
4288
4289         return rc;
4290 }
4291
4292 static struct ibm_struct fan_driver_data = {
4293         .name = "fan",
4294         .read = fan_read,
4295         .write = fan_write,
4296         .exit = fan_exit,
4297 };
4298
4299 /****************************************************************************
4300  ****************************************************************************
4301  *
4302  * Infrastructure
4303  *
4304  ****************************************************************************
4305  ****************************************************************************/
4306
4307 /* /proc support */
4308 static struct proc_dir_entry *proc_dir;
4309
4310 /* Subdriver registry */
4311 static LIST_HEAD(tpacpi_all_drivers);
4312
4313
4314 /*
4315  * Module and infrastructure proble, init and exit handling
4316  */
4317
4318 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
4319 static const char * __init str_supported(int is_supported)
4320 {
4321         static char text_unsupported[] __initdata = "not supported";
4322
4323         return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
4324 }
4325 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4326
4327 static int __init ibm_init(struct ibm_init_struct *iibm)
4328 {
4329         int ret;
4330         struct ibm_struct *ibm = iibm->data;
4331         struct proc_dir_entry *entry;
4332
4333         BUG_ON(ibm == NULL);
4334
4335         INIT_LIST_HEAD(&ibm->all_drivers);
4336
4337         if (ibm->flags.experimental && !experimental)
4338                 return 0;
4339
4340         dbg_printk(TPACPI_DBG_INIT,
4341                 "probing for %s\n", ibm->name);
4342
4343         if (iibm->init) {
4344                 ret = iibm->init(iibm);
4345                 if (ret > 0)
4346                         return 0;       /* probe failed */
4347                 if (ret)
4348                         return ret;
4349
4350                 ibm->flags.init_called = 1;
4351         }
4352
4353         if (ibm->acpi) {
4354                 if (ibm->acpi->hid) {
4355                         ret = register_tpacpi_subdriver(ibm);
4356                         if (ret)
4357                                 goto err_out;
4358                 }
4359
4360                 if (ibm->acpi->notify) {
4361                         ret = setup_acpi_notify(ibm);
4362                         if (ret == -ENODEV) {
4363                                 printk(IBM_NOTICE "disabling subdriver %s\n",
4364                                         ibm->name);
4365                                 ret = 0;
4366                                 goto err_out;
4367                         }
4368                         if (ret < 0)
4369                                 goto err_out;
4370                 }
4371         }
4372
4373         dbg_printk(TPACPI_DBG_INIT,
4374                 "%s installed\n", ibm->name);
4375
4376         if (ibm->read) {
4377                 entry = create_proc_entry(ibm->name,
4378                                           S_IFREG | S_IRUGO | S_IWUSR,
4379                                           proc_dir);
4380                 if (!entry) {
4381                         printk(IBM_ERR "unable to create proc entry %s\n",
4382                                ibm->name);
4383                         ret = -ENODEV;
4384                         goto err_out;
4385                 }
4386                 entry->owner = THIS_MODULE;
4387                 entry->data = ibm;
4388                 entry->read_proc = &dispatch_procfs_read;
4389                 if (ibm->write)
4390                         entry->write_proc = &dispatch_procfs_write;
4391                 ibm->flags.proc_created = 1;
4392         }
4393
4394         list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4395
4396         return 0;
4397
4398 err_out:
4399         dbg_printk(TPACPI_DBG_INIT,
4400                 "%s: at error exit path with result %d\n",
4401                 ibm->name, ret);
4402
4403         ibm_exit(ibm);
4404         return (ret < 0)? ret : 0;
4405 }
4406
4407 static void ibm_exit(struct ibm_struct *ibm)
4408 {
4409         dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
4410
4411         list_del_init(&ibm->all_drivers);
4412
4413         if (ibm->flags.acpi_notify_installed) {
4414                 dbg_printk(TPACPI_DBG_EXIT,
4415                         "%s: acpi_remove_notify_handler\n", ibm->name);
4416                 BUG_ON(!ibm->acpi);
4417                 acpi_remove_notify_handler(*ibm->acpi->handle,
4418                                            ibm->acpi->type,
4419                                            dispatch_acpi_notify);
4420                 ibm->flags.acpi_notify_installed = 0;
4421                 ibm->flags.acpi_notify_installed = 0;
4422         }
4423
4424         if (ibm->flags.proc_created) {
4425                 dbg_printk(TPACPI_DBG_EXIT,
4426                         "%s: remove_proc_entry\n", ibm->name);
4427                 remove_proc_entry(ibm->name, proc_dir);
4428                 ibm->flags.proc_created = 0;
4429         }
4430
4431         if (ibm->flags.acpi_driver_registered) {
4432                 dbg_printk(TPACPI_DBG_EXIT,
4433                         "%s: acpi_bus_unregister_driver\n", ibm->name);
4434                 BUG_ON(!ibm->acpi);
4435                 acpi_bus_unregister_driver(ibm->acpi->driver);
4436                 kfree(ibm->acpi->driver);
4437                 ibm->acpi->driver = NULL;
4438                 ibm->flags.acpi_driver_registered = 0;
4439         }
4440
4441         if (ibm->flags.init_called && ibm->exit) {
4442                 ibm->exit();
4443                 ibm->flags.init_called = 0;
4444         }
4445
4446         dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
4447 }
4448
4449 /* Probing */
4450
4451 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
4452 {
4453         struct dmi_device *dev = NULL;
4454         char ec_fw_string[18];
4455
4456         if (!tp)
4457                 return;
4458
4459         memset(tp, 0, sizeof(*tp));
4460
4461         if (dmi_name_in_vendors("IBM"))
4462                 tp->vendor = PCI_VENDOR_ID_IBM;
4463         else if (dmi_name_in_vendors("LENOVO"))
4464                 tp->vendor = PCI_VENDOR_ID_LENOVO;
4465         else
4466                 return;
4467
4468         tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4469                                         GFP_KERNEL);
4470         if (!tp->bios_version_str)
4471                 return;
4472         tp->bios_model = tp->bios_version_str[0]
4473                          | (tp->bios_version_str[1] << 8);
4474
4475         /*
4476          * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4477          * X32 or newer, all Z series;  Some models must have an
4478          * up-to-date BIOS or they will not be detected.
4479          *
4480          * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4481          */
4482         while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4483                 if (sscanf(dev->name,
4484                            "IBM ThinkPad Embedded Controller -[%17c",
4485                            ec_fw_string) == 1) {
4486                         ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4487                         ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
4488
4489                         tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4490                         tp->ec_model = ec_fw_string[0]
4491                                         | (ec_fw_string[1] << 8);
4492                         break;
4493                 }
4494         }
4495
4496         tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4497                                         GFP_KERNEL);
4498         if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4499                 kfree(tp->model_str);
4500                 tp->model_str = NULL;
4501         }
4502 }
4503
4504 static int __init probe_for_thinkpad(void)
4505 {
4506         int is_thinkpad;
4507
4508         if (acpi_disabled)
4509                 return -ENODEV;
4510
4511         /*
4512          * Non-ancient models have better DMI tagging, but very old models
4513          * don't.
4514          */
4515         is_thinkpad = (thinkpad_id.model_str != NULL);
4516
4517         /* ec is required because many other handles are relative to it */
4518         IBM_ACPIHANDLE_INIT(ec);
4519         if (!ec_handle) {
4520                 if (is_thinkpad)
4521                         printk(IBM_ERR
4522                                 "Not yet supported ThinkPad detected!\n");
4523                 return -ENODEV;
4524         }
4525
4526         /*
4527          * Risks a regression on very old machines, but reduces potential
4528          * false positives a damn great deal
4529          */
4530         if (!is_thinkpad)
4531                 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
4532
4533         if (!is_thinkpad && !force_load)
4534                 return -ENODEV;
4535
4536         return 0;
4537 }
4538
4539
4540 /* Module init, exit, parameters */
4541
4542 static struct ibm_init_struct ibms_init[] __initdata = {
4543         {
4544                 .init = thinkpad_acpi_driver_init,
4545                 .data = &thinkpad_acpi_driver_data,
4546         },
4547         {
4548                 .init = hotkey_init,
4549                 .data = &hotkey_driver_data,
4550         },
4551         {
4552                 .init = bluetooth_init,
4553                 .data = &bluetooth_driver_data,
4554         },
4555         {
4556                 .init = wan_init,
4557                 .data = &wan_driver_data,
4558         },
4559         {
4560                 .init = video_init,
4561                 .data = &video_driver_data,
4562         },
4563         {
4564                 .init = light_init,
4565                 .data = &light_driver_data,
4566         },
4567 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4568         {
4569                 .init = dock_init,
4570                 .data = &dock_driver_data[0],
4571         },
4572         {
4573                 .init = dock_init2,
4574                 .data = &dock_driver_data[1],
4575         },
4576 #endif
4577 #ifdef CONFIG_THINKPAD_ACPI_BAY
4578         {
4579                 .init = bay_init,
4580                 .data = &bay_driver_data,
4581         },
4582 #endif
4583         {
4584                 .init = cmos_init,
4585                 .data = &cmos_driver_data,
4586         },
4587         {
4588                 .init = led_init,
4589                 .data = &led_driver_data,
4590         },
4591         {
4592                 .init = beep_init,
4593                 .data = &beep_driver_data,
4594         },
4595         {
4596                 .init = thermal_init,
4597                 .data = &thermal_driver_data,
4598         },
4599         {
4600                 .data = &ecdump_driver_data,
4601         },
4602         {
4603                 .init = brightness_init,
4604                 .data = &brightness_driver_data,
4605         },
4606         {
4607                 .data = &volume_driver_data,
4608         },
4609         {
4610                 .init = fan_init,
4611                 .data = &fan_driver_data,
4612         },
4613 };
4614
4615 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
4616 {
4617         unsigned int i;
4618         struct ibm_struct *ibm;
4619
4620         for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4621                 ibm = ibms_init[i].data;
4622                 BUG_ON(ibm == NULL);
4623
4624                 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4625                         if (strlen(val) > sizeof(ibms_init[i].param) - 2)
4626                                 return -ENOSPC;
4627                         strcpy(ibms_init[i].param, val);
4628                         strcat(ibms_init[i].param, ",");
4629                         return 0;
4630                 }
4631         }
4632
4633         return -EINVAL;
4634 }
4635
4636 static int experimental;
4637 module_param(experimental, int, 0);
4638
4639 static u32 dbg_level;
4640 module_param_named(debug, dbg_level, uint, 0);
4641
4642 static int force_load;
4643 module_param(force_load, bool, 0);
4644
4645 static int fan_control_allowed;
4646 module_param_named(fan_control, fan_control_allowed, bool, 0);
4647
4648 static int brightness_mode;
4649 module_param_named(brightness_mode, brightness_mode, int, 0);
4650
4651 static unsigned int hotkey_report_mode;
4652 module_param(hotkey_report_mode, uint, 0);
4653
4654 #define IBM_PARAM(feature) \
4655         module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4656
4657 IBM_PARAM(hotkey);
4658 IBM_PARAM(bluetooth);
4659 IBM_PARAM(video);
4660 IBM_PARAM(light);
4661 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4662 IBM_PARAM(dock);
4663 #endif
4664 #ifdef CONFIG_THINKPAD_ACPI_BAY
4665 IBM_PARAM(bay);
4666 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4667 IBM_PARAM(cmos);
4668 IBM_PARAM(led);
4669 IBM_PARAM(beep);
4670 IBM_PARAM(ecdump);
4671 IBM_PARAM(brightness);
4672 IBM_PARAM(volume);
4673 IBM_PARAM(fan);
4674
4675 static int __init thinkpad_acpi_module_init(void)
4676 {
4677         int ret, i;
4678
4679         /* Parameter checking */
4680         if (hotkey_report_mode > 2)
4681                 return -EINVAL;
4682
4683         /* Driver-level probe */
4684
4685         get_thinkpad_model_data(&thinkpad_id);
4686         ret = probe_for_thinkpad();
4687         if (ret) {
4688                 thinkpad_acpi_module_exit();
4689                 return ret;
4690         }
4691
4692         /* Driver initialization */
4693
4694         IBM_ACPIHANDLE_INIT(ecrd);
4695         IBM_ACPIHANDLE_INIT(ecwr);
4696
4697         proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
4698         if (!proc_dir) {
4699                 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
4700                 thinkpad_acpi_module_exit();
4701                 return -ENODEV;
4702         }
4703         proc_dir->owner = THIS_MODULE;
4704
4705         ret = platform_driver_register(&tpacpi_pdriver);
4706         if (ret) {
4707                 printk(IBM_ERR "unable to register platform driver\n");
4708                 thinkpad_acpi_module_exit();
4709                 return ret;
4710         }
4711         tp_features.platform_drv_registered = 1;
4712
4713         ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4714         if (ret) {
4715                 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4716                 thinkpad_acpi_module_exit();
4717                 return ret;
4718         }
4719         tp_features.platform_drv_attrs_registered = 1;
4720
4721
4722         /* Device initialization */
4723         tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4724                                                         NULL, 0);
4725         if (IS_ERR(tpacpi_pdev)) {
4726                 ret = PTR_ERR(tpacpi_pdev);
4727                 tpacpi_pdev = NULL;
4728                 printk(IBM_ERR "unable to register platform device\n");
4729                 thinkpad_acpi_module_exit();
4730                 return ret;
4731         }
4732         tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
4733         if (IS_ERR(tpacpi_hwmon)) {
4734                 ret = PTR_ERR(tpacpi_hwmon);
4735                 tpacpi_hwmon = NULL;
4736                 printk(IBM_ERR "unable to register hwmon device\n");
4737                 thinkpad_acpi_module_exit();
4738                 return ret;
4739         }
4740         tpacpi_inputdev = input_allocate_device();
4741         if (!tpacpi_inputdev) {
4742                 printk(IBM_ERR "unable to allocate input device\n");
4743                 thinkpad_acpi_module_exit();
4744                 return -ENOMEM;
4745         } else {
4746                 /* Prepare input device, but don't register */
4747                 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4748                 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4749                 tpacpi_inputdev->id.bustype = BUS_HOST;
4750                 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4751                                                 thinkpad_id.vendor :
4752                                                 PCI_VENDOR_ID_IBM;
4753                 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4754                 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4755         }
4756         for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4757                 ret = ibm_init(&ibms_init[i]);
4758                 if (ret >= 0 && *ibms_init[i].param)
4759                         ret = ibms_init[i].data->write(ibms_init[i].param);
4760                 if (ret < 0) {
4761                         thinkpad_acpi_module_exit();
4762                         return ret;
4763                 }
4764         }
4765         ret = input_register_device(tpacpi_inputdev);
4766         if (ret < 0) {
4767                 printk(IBM_ERR "unable to register input device\n");
4768                 thinkpad_acpi_module_exit();
4769                 return ret;
4770         } else {
4771                 tp_features.input_device_registered = 1;
4772         }
4773
4774         return 0;
4775 }
4776
4777 static void thinkpad_acpi_module_exit(void)
4778 {
4779         struct ibm_struct *ibm, *itmp;
4780
4781         list_for_each_entry_safe_reverse(ibm, itmp,
4782                                          &tpacpi_all_drivers,
4783                                          all_drivers) {
4784                 ibm_exit(ibm);
4785         }
4786
4787         dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
4788
4789         if (tpacpi_inputdev) {
4790                 if (tp_features.input_device_registered)
4791                         input_unregister_device(tpacpi_inputdev);
4792                 else
4793                         input_free_device(tpacpi_inputdev);
4794         }
4795
4796         if (tpacpi_hwmon)
4797                 hwmon_device_unregister(tpacpi_hwmon);
4798
4799         if (tpacpi_pdev)
4800                 platform_device_unregister(tpacpi_pdev);
4801
4802         if (tp_features.platform_drv_attrs_registered)
4803                 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4804
4805         if (tp_features.platform_drv_registered)
4806                 platform_driver_unregister(&tpacpi_pdriver);
4807
4808         if (proc_dir)
4809                 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
4810
4811         kfree(thinkpad_id.bios_version_str);
4812         kfree(thinkpad_id.ec_version_str);
4813         kfree(thinkpad_id.model_str);
4814 }
4815
4816 module_init(thinkpad_acpi_module_init);
4817 module_exit(thinkpad_acpi_module_exit);