Pileus Git - ~andy/linux/blob - drivers/platform/x86/hp-wmi.c

   1 /*
   2  * HP WMI hotkeys
   3  *
   4  * Copyright (C) 2008 Red Hat <mjg@redhat.com>
   5  * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
   6  *
   7  * Portions based on wistron_btns.c:
   8  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
   9  * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
  10  * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This program is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25  */
  26
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/slab.h>
  33 #include <linux/types.h>
  34 #include <linux/input.h>
  35 #include <linux/input/sparse-keymap.h>
  36 #include <linux/platform_device.h>
  37 #include <linux/acpi.h>
  38 #include <linux/rfkill.h>
  39 #include <linux/string.h>
  40
  41 MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
  42 MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
  43 MODULE_LICENSE("GPL");
  44
  45 MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
  46 MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
  47
  48 #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
  49 #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
  50
  51 #define HPWMI_DISPLAY_QUERY 0x1
  52 #define HPWMI_HDDTEMP_QUERY 0x2
  53 #define HPWMI_ALS_QUERY 0x3
  54 #define HPWMI_HARDWARE_QUERY 0x4
  55 #define HPWMI_WIRELESS_QUERY 0x5
  56 #define HPWMI_HOTKEY_QUERY 0xc
  57 #define HPWMI_WIRELESS2_QUERY 0x1b
  58
  59 enum hp_wmi_radio {
  60         HPWMI_WIFI = 0,
  61         HPWMI_BLUETOOTH = 1,
  62         HPWMI_WWAN = 2,
  63         HPWMI_GPS = 3,
  64 };
  65
  66 enum hp_wmi_event_ids {
  67         HPWMI_DOCK_EVENT = 1,
  68         HPWMI_PARK_HDD = 2,
  69         HPWMI_SMART_ADAPTER = 3,
  70         HPWMI_BEZEL_BUTTON = 4,
  71         HPWMI_WIRELESS = 5,
  72         HPWMI_CPU_BATTERY_THROTTLE = 6,
  73         HPWMI_LOCK_SWITCH = 7,
  74 };
  75
  76 static int hp_wmi_bios_setup(struct platform_device *device);
  77 static int __exit hp_wmi_bios_remove(struct platform_device *device);
  78 static int hp_wmi_resume_handler(struct device *device);
  79
  80 struct bios_args {
  81         u32 signature;
  82         u32 command;
  83         u32 commandtype;
  84         u32 datasize;
  85         u32 data;
  86 };
  87
  88 struct bios_return {
  89         u32 sigpass;
  90         u32 return_code;
  91 };
  92
  93 enum hp_return_value {
  94         HPWMI_RET_WRONG_SIGNATURE       = 0x02,
  95         HPWMI_RET_UNKNOWN_COMMAND       = 0x03,
  96         HPWMI_RET_UNKNOWN_CMDTYPE       = 0x04,
  97         HPWMI_RET_INVALID_PARAMETERS    = 0x05,
  98 };
  99
 100 enum hp_wireless2_bits {
 101         HPWMI_POWER_STATE       = 0x01,
 102         HPWMI_POWER_SOFT        = 0x02,
 103         HPWMI_POWER_BIOS        = 0x04,
 104         HPWMI_POWER_HARD        = 0x08,
 105 };
 106
 107 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
 108                          != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
 109 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
 110
 111 struct bios_rfkill2_device_state {
 112         u8 radio_type;
 113         u8 bus_type;
 114         u16 vendor_id;
 115         u16 product_id;
 116         u16 subsys_vendor_id;
 117         u16 subsys_product_id;
 118         u8 rfkill_id;
 119         u8 power;
 120         u8 unknown[4];
 121 };
 122
 123 /* 7 devices fit into the 128 byte buffer */
 124 #define HPWMI_MAX_RFKILL2_DEVICES       7
 125
 126 struct bios_rfkill2_state {
 127         u8 unknown[7];
 128         u8 count;
 129         u8 pad[8];
 130         struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
 131 };
 132
 133 static const struct key_entry hp_wmi_keymap[] = {
 134         { KE_KEY, 0x02,   { KEY_BRIGHTNESSUP } },
 135         { KE_KEY, 0x03,   { KEY_BRIGHTNESSDOWN } },
 136         { KE_KEY, 0x20e6, { KEY_PROG1 } },
 137         { KE_KEY, 0x20e8, { KEY_MEDIA } },
 138         { KE_KEY, 0x2142, { KEY_MEDIA } },
 139         { KE_KEY, 0x213b, { KEY_INFO } },
 140         { KE_KEY, 0x2169, { KEY_DIRECTION } },
 141         { KE_KEY, 0x216a, { KEY_SETUP } },
 142         { KE_KEY, 0x231b, { KEY_HELP } },
 143         { KE_END, 0 }
 144 };
 145
 146 static struct input_dev *hp_wmi_input_dev;
 147 static struct platform_device *hp_wmi_platform_dev;
 148
 149 static struct rfkill *wifi_rfkill;
 150 static struct rfkill *bluetooth_rfkill;
 151 static struct rfkill *wwan_rfkill;
 152 static struct rfkill *gps_rfkill;
 153
 154 struct rfkill2_device {
 155         u8 id;
 156         int num;
 157         struct rfkill *rfkill;
 158 };
 159
 160 static int rfkill2_count;
 161 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
 162
 163 static const struct dev_pm_ops hp_wmi_pm_ops = {
 164         .resume  = hp_wmi_resume_handler,
 165         .restore  = hp_wmi_resume_handler,
 166 };
 167
 168 static struct platform_driver hp_wmi_driver = {
 169         .driver = {
 170                 .name = "hp-wmi",
 171                 .owner = THIS_MODULE,
 172                 .pm = &hp_wmi_pm_ops,
 173         },
 174         .probe = hp_wmi_bios_setup,
 175         .remove = hp_wmi_bios_remove,
 176 };
 177
 178 /*
 179  * hp_wmi_perform_query
 180  *
 181  * query:       The commandtype -> What should be queried
 182  * write:       The command -> 0 read, 1 write, 3 ODM specific
 183  * buffer:      Buffer used as input and/or output
 184  * insize:      Size of input buffer
 185  * outsize:     Size of output buffer
 186  *
 187  * returns zero on success
 188  *         an HP WMI query specific error code (which is positive)
 189  *         -EINVAL if the query was not successful at all
 190  *         -EINVAL if the output buffer size exceeds buffersize
 191  *
 192  * Note: The buffersize must at least be the maximum of the input and output
 193  *       size. E.g. Battery info query (0x7) is defined to have 1 byte input
 194  *       and 128 byte output. The caller would do:
 195  *       buffer = kzalloc(128, GFP_KERNEL);
 196  *       ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
 197  */
 198 static int hp_wmi_perform_query(int query, int write, void *buffer,
 199                                 int insize, int outsize)
 200 {
 201         struct bios_return *bios_return;
 202         int actual_outsize;
 203         union acpi_object *obj;
 204         struct bios_args args = {
 205                 .signature = 0x55434553,
 206                 .command = write ? 0x2 : 0x1,
 207                 .commandtype = query,
 208                 .datasize = insize,
 209                 .data = 0,
 210         };
 211         struct acpi_buffer input = { sizeof(struct bios_args), &args };
 212         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 213         u32 rc;
 214
 215         if (WARN_ON(insize > sizeof(args.data)))
 216                 return -EINVAL;
 217         memcpy(&args.data, buffer, insize);
 218
 219         wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
 220
 221         obj = output.pointer;
 222
 223         if (!obj)
 224                 return -EINVAL;
 225         else if (obj->type != ACPI_TYPE_BUFFER) {
 226                 kfree(obj);
 227                 return -EINVAL;
 228         }
 229
 230         bios_return = (struct bios_return *)obj->buffer.pointer;
 231         rc = bios_return->return_code;
 232
 233         if (rc) {
 234                 if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
 235                         pr_warn("query 0x%x returned error 0x%x\n", query, rc);
 236                 kfree(obj);
 237                 return rc;
 238         }
 239
 240         if (!outsize) {
 241                 /* ignore output data */
 242                 kfree(obj);
 243                 return 0;
 244         }
 245
 246         actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
 247         memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
 248         memset(buffer + actual_outsize, 0, outsize - actual_outsize);
 249         kfree(obj);
 250         return 0;
 251 }
 252
 253 static int hp_wmi_display_state(void)
 254 {
 255         int state = 0;
 256         int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
 257                                        sizeof(state), sizeof(state));
 258         if (ret)
 259                 return -EINVAL;
 260         return state;
 261 }
 262
 263 static int hp_wmi_hddtemp_state(void)
 264 {
 265         int state = 0;
 266         int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
 267                                        sizeof(state), sizeof(state));
 268         if (ret)
 269                 return -EINVAL;
 270         return state;
 271 }
 272
 273 static int hp_wmi_als_state(void)
 274 {
 275         int state = 0;
 276         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
 277                                        sizeof(state), sizeof(state));
 278         if (ret)
 279                 return -EINVAL;
 280         return state;
 281 }
 282
 283 static int hp_wmi_dock_state(void)
 284 {
 285         int state = 0;
 286         int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
 287                                        sizeof(state), sizeof(state));
 288
 289         if (ret)
 290                 return -EINVAL;
 291
 292         return state & 0x1;
 293 }
 294
 295 static int hp_wmi_tablet_state(void)
 296 {
 297         int state = 0;
 298         int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
 299                                        sizeof(state), sizeof(state));
 300         if (ret)
 301                 return ret;
 302
 303         return (state & 0x4) ? 1 : 0;
 304 }
 305
 306 static int hp_wmi_set_block(void *data, bool blocked)
 307 {
 308         enum hp_wmi_radio r = (enum hp_wmi_radio) data;
 309         int query = BIT(r + 8) | ((!blocked) << r);
 310         int ret;
 311
 312         ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
 313                                    &query, sizeof(query), 0);
 314         if (ret)
 315                 return -EINVAL;
 316         return 0;
 317 }
 318
 319 static const struct rfkill_ops hp_wmi_rfkill_ops = {
 320         .set_block = hp_wmi_set_block,
 321 };
 322
 323 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
 324 {
 325         int wireless = 0;
 326         int mask;
 327         hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
 328                              &wireless, sizeof(wireless),
 329                              sizeof(wireless));
 330         /* TBD: Pass error */
 331
 332         mask = 0x200 << (r * 8);
 333
 334         if (wireless & mask)
 335                 return false;
 336         else
 337                 return true;
 338 }
 339
 340 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
 341 {
 342         int wireless = 0;
 343         int mask;
 344         hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
 345                              &wireless, sizeof(wireless),
 346                              sizeof(wireless));
 347         /* TBD: Pass error */
 348
 349         mask = 0x800 << (r * 8);
 350
 351         if (wireless & mask)
 352                 return false;
 353         else
 354                 return true;
 355 }
 356
 357 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
 358 {
 359         int rfkill_id = (int)(long)data;
 360         char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
 361
 362         if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
 363                                    buffer, sizeof(buffer), 0))
 364                 return -EINVAL;
 365         return 0;
 366 }
 367
 368 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
 369         .set_block = hp_wmi_rfkill2_set_block,
 370 };
 371
 372 static int hp_wmi_rfkill2_refresh(void)
 373 {
 374         int err, i;
 375         struct bios_rfkill2_state state;
 376
 377         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
 378                                    0, sizeof(state));
 379         if (err)
 380                 return err;
 381
 382         for (i = 0; i < rfkill2_count; i++) {
 383                 int num = rfkill2[i].num;
 384                 struct bios_rfkill2_device_state *devstate;
 385                 devstate = &state.device[num];
 386
 387                 if (num >= state.count ||
 388                     devstate->rfkill_id != rfkill2[i].id) {
 389                         pr_warn("power configuration of the wireless devices unexpectedly changed\n");
 390                         continue;
 391                 }
 392
 393                 rfkill_set_states(rfkill2[i].rfkill,
 394                                   IS_SWBLOCKED(devstate->power),
 395                                   IS_HWBLOCKED(devstate->power));
 396         }
 397
 398         return 0;
 399 }
 400
 401 static ssize_t show_display(struct device *dev, struct device_attribute *attr,
 402                             char *buf)
 403 {
 404         int value = hp_wmi_display_state();
 405         if (value < 0)
 406                 return -EINVAL;
 407         return sprintf(buf, "%d\n", value);
 408 }
 409
 410 static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
 411                             char *buf)
 412 {
 413         int value = hp_wmi_hddtemp_state();
 414         if (value < 0)
 415                 return -EINVAL;
 416         return sprintf(buf, "%d\n", value);
 417 }
 418
 419 static ssize_t show_als(struct device *dev, struct device_attribute *attr,
 420                         char *buf)
 421 {
 422         int value = hp_wmi_als_state();
 423         if (value < 0)
 424                 return -EINVAL;
 425         return sprintf(buf, "%d\n", value);
 426 }
 427
 428 static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
 429                          char *buf)
 430 {
 431         int value = hp_wmi_dock_state();
 432         if (value < 0)
 433                 return -EINVAL;
 434         return sprintf(buf, "%d\n", value);
 435 }
 436
 437 static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
 438                          char *buf)
 439 {
 440         int value = hp_wmi_tablet_state();
 441         if (value < 0)
 442                 return -EINVAL;
 443         return sprintf(buf, "%d\n", value);
 444 }
 445
 446 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
 447                        const char *buf, size_t count)
 448 {
 449         u32 tmp = simple_strtoul(buf, NULL, 10);
 450         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
 451                                        sizeof(tmp), sizeof(tmp));
 452         if (ret)
 453                 return -EINVAL;
 454
 455         return count;
 456 }
 457
 458 static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
 459 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
 460 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
 461 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
 462 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
 463
 464 static void hp_wmi_notify(u32 value, void *context)
 465 {
 466         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
 467         union acpi_object *obj;
 468         u32 event_id, event_data;
 469         int key_code = 0, ret;
 470         u32 *location;
 471         acpi_status status;
 472
 473         status = wmi_get_event_data(value, &response);
 474         if (status != AE_OK) {
 475                 pr_info("bad event status 0x%x\n", status);
 476                 return;
 477         }
 478
 479         obj = (union acpi_object *)response.pointer;
 480
 481         if (!obj)
 482                 return;
 483         if (obj->type != ACPI_TYPE_BUFFER) {
 484                 pr_info("Unknown response received %d\n", obj->type);
 485                 kfree(obj);
 486                 return;
 487         }
 488
 489         /*
 490          * Depending on ACPI version the concatenation of id and event data
 491          * inside _WED function will result in a 8 or 16 byte buffer.
 492          */
 493         location = (u32 *)obj->buffer.pointer;
 494         if (obj->buffer.length == 8) {
 495                 event_id = *location;
 496                 event_data = *(location + 1);
 497         } else if (obj->buffer.length == 16) {
 498                 event_id = *location;
 499                 event_data = *(location + 2);
 500         } else {
 501                 pr_info("Unknown buffer length %d\n", obj->buffer.length);
 502                 kfree(obj);
 503                 return;
 504         }
 505         kfree(obj);
 506
 507         switch (event_id) {
 508         case HPWMI_DOCK_EVENT:
 509                 input_report_switch(hp_wmi_input_dev, SW_DOCK,
 510                                     hp_wmi_dock_state());
 511                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
 512                                     hp_wmi_tablet_state());
 513                 input_sync(hp_wmi_input_dev);
 514                 break;
 515         case HPWMI_PARK_HDD:
 516                 break;
 517         case HPWMI_SMART_ADAPTER:
 518                 break;
 519         case HPWMI_BEZEL_BUTTON:
 520                 ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
 521                                            &key_code,
 522                                            sizeof(key_code),
 523                                            sizeof(key_code));
 524                 if (ret)
 525                         break;
 526
 527                 if (!sparse_keymap_report_event(hp_wmi_input_dev,
 528                                                 key_code, 1, true))
 529                         pr_info("Unknown key code - 0x%x\n", key_code);
 530                 break;
 531         case HPWMI_WIRELESS:
 532                 if (rfkill2_count) {
 533                         hp_wmi_rfkill2_refresh();
 534                         break;
 535                 }
 536
 537                 if (wifi_rfkill)
 538                         rfkill_set_states(wifi_rfkill,
 539                                           hp_wmi_get_sw_state(HPWMI_WIFI),
 540                                           hp_wmi_get_hw_state(HPWMI_WIFI));
 541                 if (bluetooth_rfkill)
 542                         rfkill_set_states(bluetooth_rfkill,
 543                                           hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
 544                                           hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
 545                 if (wwan_rfkill)
 546                         rfkill_set_states(wwan_rfkill,
 547                                           hp_wmi_get_sw_state(HPWMI_WWAN),
 548                                           hp_wmi_get_hw_state(HPWMI_WWAN));
 549                 if (gps_rfkill)
 550                         rfkill_set_states(gps_rfkill,
 551                                           hp_wmi_get_sw_state(HPWMI_GPS),
 552                                           hp_wmi_get_hw_state(HPWMI_GPS));
 553                 break;
 554         case HPWMI_CPU_BATTERY_THROTTLE:
 555                 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
 556                 break;
 557         case HPWMI_LOCK_SWITCH:
 558                 break;
 559         default:
 560                 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
 561                 break;
 562         }
 563 }
 564
 565 static int __init hp_wmi_input_setup(void)
 566 {
 567         acpi_status status;
 568         int err;
 569
 570         hp_wmi_input_dev = input_allocate_device();
 571         if (!hp_wmi_input_dev)
 572                 return -ENOMEM;
 573
 574         hp_wmi_input_dev->name = "HP WMI hotkeys";
 575         hp_wmi_input_dev->phys = "wmi/input0";
 576         hp_wmi_input_dev->id.bustype = BUS_HOST;
 577
 578         __set_bit(EV_SW, hp_wmi_input_dev->evbit);
 579         __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
 580         __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
 581
 582         err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
 583         if (err)
 584                 goto err_free_dev;
 585
 586         /* Set initial hardware state */
 587         input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
 588         input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
 589                             hp_wmi_tablet_state());
 590         input_sync(hp_wmi_input_dev);
 591
 592         status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
 593         if (ACPI_FAILURE(status)) {
 594                 err = -EIO;
 595                 goto err_free_keymap;
 596         }
 597
 598         err = input_register_device(hp_wmi_input_dev);
 599         if (err)
 600                 goto err_uninstall_notifier;
 601
 602         return 0;
 603
 604  err_uninstall_notifier:
 605         wmi_remove_notify_handler(HPWMI_EVENT_GUID);
 606  err_free_keymap:
 607         sparse_keymap_free(hp_wmi_input_dev);
 608  err_free_dev:
 609         input_free_device(hp_wmi_input_dev);
 610         return err;
 611 }
 612
 613 static void hp_wmi_input_destroy(void)
 614 {
 615         wmi_remove_notify_handler(HPWMI_EVENT_GUID);
 616         sparse_keymap_free(hp_wmi_input_dev);
 617         input_unregister_device(hp_wmi_input_dev);
 618 }
 619
 620 static void cleanup_sysfs(struct platform_device *device)
 621 {
 622         device_remove_file(&device->dev, &dev_attr_display);
 623         device_remove_file(&device->dev, &dev_attr_hddtemp);
 624         device_remove_file(&device->dev, &dev_attr_als);
 625         device_remove_file(&device->dev, &dev_attr_dock);
 626         device_remove_file(&device->dev, &dev_attr_tablet);
 627 }
 628
 629 static int hp_wmi_rfkill_setup(struct platform_device *device)
 630 {
 631         int err;
 632         int wireless = 0;
 633
 634         err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
 635                                    sizeof(wireless), sizeof(wireless));
 636         if (err)
 637                 return err;
 638
 639         if (wireless & 0x1) {
 640                 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
 641                                            RFKILL_TYPE_WLAN,
 642                                            &hp_wmi_rfkill_ops,
 643                                            (void *) HPWMI_WIFI);
 644                 if (!wifi_rfkill)
 645                         return -ENOMEM;
 646                 rfkill_init_sw_state(wifi_rfkill,
 647                                      hp_wmi_get_sw_state(HPWMI_WIFI));
 648                 rfkill_set_hw_state(wifi_rfkill,
 649                                     hp_wmi_get_hw_state(HPWMI_WIFI));
 650                 err = rfkill_register(wifi_rfkill);
 651                 if (err)
 652                         goto register_wifi_error;
 653         }
 654
 655         if (wireless & 0x2) {
 656                 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
 657                                                 RFKILL_TYPE_BLUETOOTH,
 658                                                 &hp_wmi_rfkill_ops,
 659                                                 (void *) HPWMI_BLUETOOTH);
 660                 if (!bluetooth_rfkill) {
 661                         err = -ENOMEM;
 662                         goto register_wifi_error;
 663                 }
 664                 rfkill_init_sw_state(bluetooth_rfkill,
 665                                      hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
 666                 rfkill_set_hw_state(bluetooth_rfkill,
 667                                     hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
 668                 err = rfkill_register(bluetooth_rfkill);
 669                 if (err)
 670                         goto register_bluetooth_error;
 671         }
 672
 673         if (wireless & 0x4) {
 674                 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
 675                                            RFKILL_TYPE_WWAN,
 676                                            &hp_wmi_rfkill_ops,
 677                                            (void *) HPWMI_WWAN);
 678                 if (!wwan_rfkill) {
 679                         err = -ENOMEM;
 680                         goto register_gps_error;
 681                 }
 682                 rfkill_init_sw_state(wwan_rfkill,
 683                                      hp_wmi_get_sw_state(HPWMI_WWAN));
 684                 rfkill_set_hw_state(wwan_rfkill,
 685                                     hp_wmi_get_hw_state(HPWMI_WWAN));
 686                 err = rfkill_register(wwan_rfkill);
 687                 if (err)
 688                         goto register_wwan_err;
 689         }
 690
 691         if (wireless & 0x8) {
 692                 gps_rfkill = rfkill_alloc("hp-gps", &device->dev,
 693                                                 RFKILL_TYPE_GPS,
 694                                                 &hp_wmi_rfkill_ops,
 695                                                 (void *) HPWMI_GPS);
 696                 if (!gps_rfkill) {
 697                         err = -ENOMEM;
 698                         goto register_bluetooth_error;
 699                 }
 700                 rfkill_init_sw_state(gps_rfkill,
 701                                      hp_wmi_get_sw_state(HPWMI_GPS));
 702                 rfkill_set_hw_state(bluetooth_rfkill,
 703                                     hp_wmi_get_hw_state(HPWMI_GPS));
 704                 err = rfkill_register(gps_rfkill);
 705                 if (err)
 706                         goto register_gps_error;
 707         }
 708
 709         return 0;
 710 register_wwan_err:
 711         rfkill_destroy(wwan_rfkill);
 712         wwan_rfkill = NULL;
 713         if (gps_rfkill)
 714                 rfkill_unregister(gps_rfkill);
 715 register_gps_error:
 716         rfkill_destroy(gps_rfkill);
 717         gps_rfkill = NULL;
 718         if (bluetooth_rfkill)
 719                 rfkill_unregister(bluetooth_rfkill);
 720 register_bluetooth_error:
 721         rfkill_destroy(bluetooth_rfkill);
 722         bluetooth_rfkill = NULL;
 723         if (wifi_rfkill)
 724                 rfkill_unregister(wifi_rfkill);
 725 register_wifi_error:
 726         rfkill_destroy(wifi_rfkill);
 727         wifi_rfkill = NULL;
 728         return err;
 729 }
 730
 731 static int hp_wmi_rfkill2_setup(struct platform_device *device)
 732 {
 733         int err, i;
 734         struct bios_rfkill2_state state;
 735         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
 736                                    0, sizeof(state));
 737         if (err)
 738                 return err;
 739
 740         if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
 741                 pr_warn("unable to parse 0x1b query output\n");
 742                 return -EINVAL;
 743         }
 744
 745         for (i = 0; i < state.count; i++) {
 746                 struct rfkill *rfkill;
 747                 enum rfkill_type type;
 748                 char *name;
 749                 switch (state.device[i].radio_type) {
 750                 case HPWMI_WIFI:
 751                         type = RFKILL_TYPE_WLAN;
 752                         name = "hp-wifi";
 753                         break;
 754                 case HPWMI_BLUETOOTH:
 755                         type = RFKILL_TYPE_BLUETOOTH;
 756                         name = "hp-bluetooth";
 757                         break;
 758                 case HPWMI_WWAN:
 759                         type = RFKILL_TYPE_WWAN;
 760                         name = "hp-wwan";
 761                         break;
 762                 case HPWMI_GPS:
 763                         type = RFKILL_TYPE_GPS;
 764                         name = "hp-gps";
 765                         break;
 766                 default:
 767                         pr_warn("unknown device type 0x%x\n",
 768                                 state.device[i].radio_type);
 769                         continue;
 770                 }
 771
 772                 if (!state.device[i].vendor_id) {
 773                         pr_warn("zero device %d while %d reported\n",
 774                                 i, state.count);
 775                         continue;
 776                 }
 777
 778                 rfkill = rfkill_alloc(name, &device->dev, type,
 779                                       &hp_wmi_rfkill2_ops, (void *)(long)i);
 780                 if (!rfkill) {
 781                         err = -ENOMEM;
 782                         goto fail;
 783                 }
 784
 785                 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
 786                 rfkill2[rfkill2_count].num = i;
 787                 rfkill2[rfkill2_count].rfkill = rfkill;
 788
 789                 rfkill_init_sw_state(rfkill,
 790                                      IS_SWBLOCKED(state.device[i].power));
 791                 rfkill_set_hw_state(rfkill,
 792                                     IS_HWBLOCKED(state.device[i].power));
 793
 794                 if (!(state.device[i].power & HPWMI_POWER_BIOS))
 795                         pr_info("device %s blocked by BIOS\n", name);
 796
 797                 err = rfkill_register(rfkill);
 798                 if (err) {
 799                         rfkill_destroy(rfkill);
 800                         goto fail;
 801                 }
 802
 803                 rfkill2_count++;
 804         }
 805
 806         return 0;
 807 fail:
 808         for (; rfkill2_count > 0; rfkill2_count--) {
 809                 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
 810                 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
 811         }
 812         return err;
 813 }
 814
 815 static int hp_wmi_bios_setup(struct platform_device *device)
 816 {
 817         int err;
 818
 819         /* clear detected rfkill devices */
 820         wifi_rfkill = NULL;
 821         bluetooth_rfkill = NULL;
 822         wwan_rfkill = NULL;
 823         gps_rfkill = NULL;
 824         rfkill2_count = 0;
 825
 826         if (hp_wmi_rfkill_setup(device))
 827                 hp_wmi_rfkill2_setup(device);
 828
 829         err = device_create_file(&device->dev, &dev_attr_display);
 830         if (err)
 831                 goto add_sysfs_error;
 832         err = device_create_file(&device->dev, &dev_attr_hddtemp);
 833         if (err)
 834                 goto add_sysfs_error;
 835         err = device_create_file(&device->dev, &dev_attr_als);
 836         if (err)
 837                 goto add_sysfs_error;
 838         err = device_create_file(&device->dev, &dev_attr_dock);
 839         if (err)
 840                 goto add_sysfs_error;
 841         err = device_create_file(&device->dev, &dev_attr_tablet);
 842         if (err)
 843                 goto add_sysfs_error;
 844         return 0;
 845
 846 add_sysfs_error:
 847         cleanup_sysfs(device);
 848         return err;
 849 }
 850
 851 static int __exit hp_wmi_bios_remove(struct platform_device *device)
 852 {
 853         int i;
 854         cleanup_sysfs(device);
 855
 856         for (i = 0; i < rfkill2_count; i++) {
 857                 rfkill_unregister(rfkill2[i].rfkill);
 858                 rfkill_destroy(rfkill2[i].rfkill);
 859         }
 860
 861         if (wifi_rfkill) {
 862                 rfkill_unregister(wifi_rfkill);
 863                 rfkill_destroy(wifi_rfkill);
 864         }
 865         if (bluetooth_rfkill) {
 866                 rfkill_unregister(bluetooth_rfkill);
 867                 rfkill_destroy(bluetooth_rfkill);
 868         }
 869         if (wwan_rfkill) {
 870                 rfkill_unregister(wwan_rfkill);
 871                 rfkill_destroy(wwan_rfkill);
 872         }
 873         if (gps_rfkill) {
 874                 rfkill_unregister(gps_rfkill);
 875                 rfkill_destroy(gps_rfkill);
 876         }
 877
 878         return 0;
 879 }
 880
 881 static int hp_wmi_resume_handler(struct device *device)
 882 {
 883         /*
 884          * Hardware state may have changed while suspended, so trigger
 885          * input events for the current state. As this is a switch,
 886          * the input layer will only actually pass it on if the state
 887          * changed.
 888          */
 889         if (hp_wmi_input_dev) {
 890                 input_report_switch(hp_wmi_input_dev, SW_DOCK,
 891                                     hp_wmi_dock_state());
 892                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
 893                                     hp_wmi_tablet_state());
 894                 input_sync(hp_wmi_input_dev);
 895         }
 896
 897         if (rfkill2_count)
 898                 hp_wmi_rfkill2_refresh();
 899
 900         if (wifi_rfkill)
 901                 rfkill_set_states(wifi_rfkill,
 902                                   hp_wmi_get_sw_state(HPWMI_WIFI),
 903                                   hp_wmi_get_hw_state(HPWMI_WIFI));
 904         if (bluetooth_rfkill)
 905                 rfkill_set_states(bluetooth_rfkill,
 906                                   hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
 907                                   hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
 908         if (wwan_rfkill)
 909                 rfkill_set_states(wwan_rfkill,
 910                                   hp_wmi_get_sw_state(HPWMI_WWAN),
 911                                   hp_wmi_get_hw_state(HPWMI_WWAN));
 912         if (gps_rfkill)
 913                 rfkill_set_states(gps_rfkill,
 914                                   hp_wmi_get_sw_state(HPWMI_GPS),
 915                                   hp_wmi_get_hw_state(HPWMI_GPS));
 916
 917         return 0;
 918 }
 919
 920 static int __init hp_wmi_init(void)
 921 {
 922         int err;
 923         int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
 924         int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
 925
 926         if (event_capable) {
 927                 err = hp_wmi_input_setup();
 928                 if (err)
 929                         return err;
 930
 931                 //Enable magic for hotkeys that run on the SMBus
 932                 ec_write(0xe6,0x6e);
 933         }
 934
 935         if (bios_capable) {
 936                 err = platform_driver_register(&hp_wmi_driver);
 937                 if (err)
 938                         goto err_driver_reg;
 939                 hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
 940                 if (!hp_wmi_platform_dev) {
 941                         err = -ENOMEM;
 942                         goto err_device_alloc;
 943                 }
 944                 err = platform_device_add(hp_wmi_platform_dev);
 945                 if (err)
 946                         goto err_device_add;
 947         }
 948
 949         if (!bios_capable && !event_capable)
 950                 return -ENODEV;
 951
 952         return 0;
 953
 954 err_device_add:
 955         platform_device_put(hp_wmi_platform_dev);
 956 err_device_alloc:
 957         platform_driver_unregister(&hp_wmi_driver);
 958 err_driver_reg:
 959         if (event_capable)
 960                 hp_wmi_input_destroy();
 961
 962         return err;
 963 }
 964
 965 static void __exit hp_wmi_exit(void)
 966 {
 967         if (wmi_has_guid(HPWMI_EVENT_GUID))
 968                 hp_wmi_input_destroy();
 969
 970         if (hp_wmi_platform_dev) {
 971                 platform_device_unregister(hp_wmi_platform_dev);
 972                 platform_driver_unregister(&hp_wmi_driver);
 973         }
 974 }
 975
 976 module_init(hp_wmi_init);
 977 module_exit(hp_wmi_exit);