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 enum hp_wmi_radio {
  52         HPWMI_WIFI      = 0x0,
  53         HPWMI_BLUETOOTH = 0x1,
  54         HPWMI_WWAN      = 0x2,
  55         HPWMI_GPS       = 0x3,
  56 };
  57
  58 enum hp_wmi_event_ids {
  59         HPWMI_DOCK_EVENT                = 0x01,
  60         HPWMI_PARK_HDD                  = 0x02,
  61         HPWMI_SMART_ADAPTER             = 0x03,
  62         HPWMI_BEZEL_BUTTON              = 0x04,
  63         HPWMI_WIRELESS                  = 0x05,
  64         HPWMI_CPU_BATTERY_THROTTLE      = 0x06,
  65         HPWMI_LOCK_SWITCH               = 0x07,
  66         HPWMI_LID_SWITCH                = 0x08,
  67         HPWMI_SCREEN_ROTATION           = 0x09,
  68         HPWMI_COOLSENSE_SYSTEM_MOBILE   = 0x0A,
  69         HPWMI_COOLSENSE_SYSTEM_HOT      = 0x0B,
  70         HPWMI_PROXIMITY_SENSOR          = 0x0C,
  71         HPWMI_BACKLIT_KB_BRIGHTNESS     = 0x0D,
  72         HPWMI_PEAKSHIFT_PERIOD          = 0x0F,
  73         HPWMI_BATTERY_CHARGE_PERIOD     = 0x10,
  74 };
  75
  76 struct bios_args {
  77         u32 signature;
  78         u32 command;
  79         u32 commandtype;
  80         u32 datasize;
  81         u32 data;
  82 };
  83
  84 enum hp_wmi_commandtype {
  85         HPWMI_DISPLAY_QUERY             = 0x01,
  86         HPWMI_HDDTEMP_QUERY             = 0x02,
  87         HPWMI_ALS_QUERY                 = 0x03,
  88         HPWMI_HARDWARE_QUERY            = 0x04,
  89         HPWMI_WIRELESS_QUERY            = 0x05,
  90         HPWMI_BATTERY_QUERY             = 0x07,
  91         HPWMI_BIOS_QUERY                = 0x09,
  92         HPWMI_FEATURE_QUERY             = 0x0b,
  93         HPWMI_HOTKEY_QUERY              = 0x0c,
  94         HPWMI_FEATURE2_QUERY            = 0x0d,
  95         HPWMI_WIRELESS2_QUERY           = 0x1b,
  96         HPWMI_POSTCODEERROR_QUERY       = 0x2a,
  97 };
  98
  99 enum hp_wmi_command {
 100         HPWMI_READ      = 0x01,
 101         HPWMI_WRITE     = 0x02,
 102         HPWMI_ODM       = 0x03,
 103 };
 104
 105 enum hp_wmi_hardware_mask {
 106         HPWMI_DOCK_MASK         = 0x01,
 107         HPWMI_TABLET_MASK       = 0x04,
 108 };
 109
 110 #define BIOS_ARGS_INIT(write, ctype, size)                              \
 111         (struct bios_args)      {       .signature = 0x55434553,        \
 112                                         .command = (write) ? 0x2 : 0x1, \
 113                                         .commandtype = (ctype),         \
 114                                         .datasize = (size),             \
 115                                         .data = 0 }
 116
 117 struct bios_return {
 118         u32 sigpass;
 119         u32 return_code;
 120 };
 121
 122 enum hp_return_value {
 123         HPWMI_RET_WRONG_SIGNATURE       = 0x02,
 124         HPWMI_RET_UNKNOWN_COMMAND       = 0x03,
 125         HPWMI_RET_UNKNOWN_CMDTYPE       = 0x04,
 126         HPWMI_RET_INVALID_PARAMETERS    = 0x05,
 127 };
 128
 129 enum hp_wireless2_bits {
 130         HPWMI_POWER_STATE       = 0x01,
 131         HPWMI_POWER_SOFT        = 0x02,
 132         HPWMI_POWER_BIOS        = 0x04,
 133         HPWMI_POWER_HARD        = 0x08,
 134 };
 135
 136 #define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
 137                          != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
 138 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
 139
 140 struct bios_rfkill2_device_state {
 141         u8 radio_type;
 142         u8 bus_type;
 143         u16 vendor_id;
 144         u16 product_id;
 145         u16 subsys_vendor_id;
 146         u16 subsys_product_id;
 147         u8 rfkill_id;
 148         u8 power;
 149         u8 unknown[4];
 150 };
 151
 152 /* 7 devices fit into the 128 byte buffer */
 153 #define HPWMI_MAX_RFKILL2_DEVICES       7
 154
 155 struct bios_rfkill2_state {
 156         u8 unknown[7];
 157         u8 count;
 158         u8 pad[8];
 159         struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
 160 };
 161
 162 static const struct key_entry hp_wmi_keymap[] = {
 163         { KE_KEY, 0x02,   { KEY_BRIGHTNESSUP } },
 164         { KE_KEY, 0x03,   { KEY_BRIGHTNESSDOWN } },
 165         { KE_KEY, 0x20e6, { KEY_PROG1 } },
 166         { KE_KEY, 0x20e8, { KEY_MEDIA } },
 167         { KE_KEY, 0x2142, { KEY_MEDIA } },
 168         { KE_KEY, 0x213b, { KEY_INFO } },
 169         { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } },
 170         { KE_KEY, 0x216a, { KEY_SETUP } },
 171         { KE_KEY, 0x231b, { KEY_HELP } },
 172         { KE_END, 0 }
 173 };
 174
 175 static struct input_dev *hp_wmi_input_dev;
 176 static struct platform_device *hp_wmi_platform_dev;
 177
 178 static struct rfkill *wifi_rfkill;
 179 static struct rfkill *bluetooth_rfkill;
 180 static struct rfkill *wwan_rfkill;
 181
 182 struct rfkill2_device {
 183         u8 id;
 184         int num;
 185         struct rfkill *rfkill;
 186 };
 187
 188 static int rfkill2_count;
 189 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
 190
 191 /*
 192  * hp_wmi_perform_query
 193  *
 194  * query:       The commandtype (enum hp_wmi_commandtype)
 195  * write:       The command (enum hp_wmi_command)
 196  * buffer:      Buffer used as input and/or output
 197  * insize:      Size of input buffer
 198  * outsize:     Size of output buffer
 199  *
 200  * returns zero on success
 201  *         an HP WMI query specific error code (which is positive)
 202  *         -EINVAL if the query was not successful at all
 203  *         -EINVAL if the output buffer size exceeds buffersize
 204  *
 205  * Note: The buffersize must at least be the maximum of the input and output
 206  *       size. E.g. Battery info query is defined to have 1 byte input
 207  *       and 128 byte output. The caller would do:
 208  *       buffer = kzalloc(128, GFP_KERNEL);
 209  *       ret = hp_wmi_perform_query(HPWMI_BATTERY_QUERY, HPWMI_READ, buffer, 1, 128)
 210  */
 211 static int hp_wmi_perform_query(int query, enum hp_wmi_command command,
 212                                 void *buffer, int insize, int outsize)
 213 {
 214         struct bios_return *bios_return;
 215         int actual_outsize;
 216         union acpi_object *obj;
 217         struct bios_args args = {
 218                 .signature = 0x55434553,
 219                 .command = command,
 220                 .commandtype = query,
 221                 .datasize = insize,
 222                 .data = 0,
 223         };
 224         struct acpi_buffer input = { sizeof(struct bios_args), &args };
 225         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 226         int ret = 0;
 227
 228         if (WARN_ON(insize > sizeof(args.data)))
 229                 return -EINVAL;
 230         memcpy(&args.data, buffer, insize);
 231
 232         wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
 233
 234         obj = output.pointer;
 235
 236         if (!obj)
 237                 return -EINVAL;
 238
 239         if (obj->type != ACPI_TYPE_BUFFER) {
 240                 ret = -EINVAL;
 241                 goto out_free;
 242         }
 243
 244         bios_return = (struct bios_return *)obj->buffer.pointer;
 245         ret = bios_return->return_code;
 246
 247         if (ret) {
 248                 if (ret != HPWMI_RET_UNKNOWN_CMDTYPE)
 249                         pr_warn("query 0x%x returned error 0x%x\n", query, ret);
 250                 goto out_free;
 251         }
 252
 253         /* Ignore output data of zero size */
 254         if (!outsize)
 255                 goto out_free;
 256
 257         actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
 258         memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
 259         memset(buffer + actual_outsize, 0, outsize - actual_outsize);
 260
 261 out_free:
 262         kfree(obj);
 263         return ret;
 264 }
 265
 266 static int hp_wmi_read_int(int query)
 267 {
 268         int val = 0, ret;
 269
 270         ret = hp_wmi_perform_query(query, HPWMI_READ, &val,
 271                                    sizeof(val), sizeof(val));
 272
 273         if (ret)
 274                 return ret < 0 ? ret : -EINVAL;
 275
 276         return val;
 277 }
 278
 279 static int hp_wmi_hw_state(int mask)
 280 {
 281         int state = hp_wmi_read_int(HPWMI_HARDWARE_QUERY);
 282
 283         if (state < 0)
 284                 return state;
 285
 286         return state & 0x1;
 287 }
 288
 289 static int __init hp_wmi_bios_2008_later(void)
 290 {
 291         int state = 0;
 292         int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, HPWMI_READ, &state,
 293                                        sizeof(state), sizeof(state));
 294         if (!ret)
 295                 return 1;
 296
 297         return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
 298 }
 299
 300 static int __init hp_wmi_bios_2009_later(void)
 301 {
 302         int state = 0;
 303         int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state,
 304                                        sizeof(state), sizeof(state));
 305         if (!ret)
 306                 return 1;
 307
 308         return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
 309 }
 310
 311 static int __init hp_wmi_enable_hotkeys(void)
 312 {
 313         int value = 0x6e;
 314         int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, HPWMI_WRITE, &value,
 315                                        sizeof(value), 0);
 316
 317         return ret <= 0 ? ret : -EINVAL;
 318 }
 319
 320 static int hp_wmi_set_block(void *data, bool blocked)
 321 {
 322         enum hp_wmi_radio r = (enum hp_wmi_radio) data;
 323         int query = BIT(r + 8) | ((!blocked) << r);
 324         int ret;
 325
 326         ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE,
 327                                    &query, sizeof(query), 0);
 328
 329         return ret <= 0 ? ret : -EINVAL;
 330 }
 331
 332 static const struct rfkill_ops hp_wmi_rfkill_ops = {
 333         .set_block = hp_wmi_set_block,
 334 };
 335
 336 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
 337 {
 338         int mask = 0x200 << (r * 8);
 339
 340         int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
 341
 342         /* TBD: Pass error */
 343         WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
 344
 345         return !(wireless & mask);
 346 }
 347
 348 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
 349 {
 350         int mask = 0x800 << (r * 8);
 351
 352         int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
 353
 354         /* TBD: Pass error */
 355         WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
 356
 357         return !(wireless & mask);
 358 }
 359
 360 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
 361 {
 362         int rfkill_id = (int)(long)data;
 363         char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
 364         int ret;
 365
 366         ret = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_WRITE,
 367                                    buffer, sizeof(buffer), 0);
 368
 369         return ret <= 0 ? ret : -EINVAL;
 370 }
 371
 372 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
 373         .set_block = hp_wmi_rfkill2_set_block,
 374 };
 375
 376 static int hp_wmi_rfkill2_refresh(void)
 377 {
 378         struct bios_rfkill2_state state;
 379         int err, i;
 380
 381         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
 382                                    0, sizeof(state));
 383         if (err)
 384                 return err;
 385
 386         for (i = 0; i < rfkill2_count; i++) {
 387                 int num = rfkill2[i].num;
 388                 struct bios_rfkill2_device_state *devstate;
 389                 devstate = &state.device[num];
 390
 391                 if (num >= state.count ||
 392                     devstate->rfkill_id != rfkill2[i].id) {
 393                         pr_warn("power configuration of the wireless devices unexpectedly changed\n");
 394                         continue;
 395                 }
 396
 397                 rfkill_set_states(rfkill2[i].rfkill,
 398                                   IS_SWBLOCKED(devstate->power),
 399                                   IS_HWBLOCKED(devstate->power));
 400         }
 401
 402         return 0;
 403 }
 404
 405 static ssize_t display_show(struct device *dev, struct device_attribute *attr,
 406                             char *buf)
 407 {
 408         int value = hp_wmi_read_int(HPWMI_DISPLAY_QUERY);
 409         if (value < 0)
 410                 return value;
 411         return sprintf(buf, "%d\n", value);
 412 }
 413
 414 static ssize_t hddtemp_show(struct device *dev, struct device_attribute *attr,
 415                             char *buf)
 416 {
 417         int value = hp_wmi_read_int(HPWMI_HDDTEMP_QUERY);
 418         if (value < 0)
 419                 return value;
 420         return sprintf(buf, "%d\n", value);
 421 }
 422
 423 static ssize_t als_show(struct device *dev, struct device_attribute *attr,
 424                         char *buf)
 425 {
 426         int value = hp_wmi_read_int(HPWMI_ALS_QUERY);
 427         if (value < 0)
 428                 return value;
 429         return sprintf(buf, "%d\n", value);
 430 }
 431
 432 static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
 433                          char *buf)
 434 {
 435         int value = hp_wmi_hw_state(HPWMI_DOCK_MASK);
 436         if (value < 0)
 437                 return value;
 438         return sprintf(buf, "%d\n", value);
 439 }
 440
 441 static ssize_t tablet_show(struct device *dev, struct device_attribute *attr,
 442                            char *buf)
 443 {
 444         int value = hp_wmi_hw_state(HPWMI_TABLET_MASK);
 445         if (value < 0)
 446                 return value;
 447         return sprintf(buf, "%d\n", value);
 448 }
 449
 450 static ssize_t postcode_show(struct device *dev, struct device_attribute *attr,
 451                              char *buf)
 452 {
 453         /* Get the POST error code of previous boot failure. */
 454         int value = hp_wmi_read_int(HPWMI_POSTCODEERROR_QUERY);
 455         if (value < 0)
 456                 return value;
 457         return sprintf(buf, "0x%x\n", value);
 458 }
 459
 460 static ssize_t als_store(struct device *dev, struct device_attribute *attr,
 461                          const char *buf, size_t count)
 462 {
 463         u32 tmp = simple_strtoul(buf, NULL, 10);
 464         int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp,
 465                                        sizeof(tmp), sizeof(tmp));
 466         if (ret)
 467                 return ret < 0 ? ret : -EINVAL;
 468
 469         return count;
 470 }
 471
 472 static ssize_t postcode_store(struct device *dev, struct device_attribute *attr,
 473                               const char *buf, size_t count)
 474 {
 475         long unsigned int tmp2;
 476         int ret;
 477         u32 tmp;
 478
 479         ret = kstrtoul(buf, 10, &tmp2);
 480         if (!ret && tmp2 != 1)
 481                 ret = -EINVAL;
 482         if (ret)
 483                 goto out;
 484
 485         /* Clear the POST error code. It is kept until until cleared. */
 486         tmp = (u32) tmp2;
 487         ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp,
 488                                        sizeof(tmp), sizeof(tmp));
 489
 490 out:
 491         if (ret)
 492                 return ret < 0 ? ret : -EINVAL;
 493
 494         return count;
 495 }
 496
 497 static DEVICE_ATTR_RO(display);
 498 static DEVICE_ATTR_RO(hddtemp);
 499 static DEVICE_ATTR_RW(als);
 500 static DEVICE_ATTR_RO(dock);
 501 static DEVICE_ATTR_RO(tablet);
 502 static DEVICE_ATTR_RW(postcode);
 503
 504 static void hp_wmi_notify(u32 value, void *context)
 505 {
 506         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
 507         u32 event_id, event_data;
 508         union acpi_object *obj;
 509         acpi_status status;
 510         u32 *location;
 511         int key_code;
 512
 513         status = wmi_get_event_data(value, &response);
 514         if (status != AE_OK) {
 515                 pr_info("bad event status 0x%x\n", status);
 516                 return;
 517         }
 518
 519         obj = (union acpi_object *)response.pointer;
 520
 521         if (!obj)
 522                 return;
 523         if (obj->type != ACPI_TYPE_BUFFER) {
 524                 pr_info("Unknown response received %d\n", obj->type);
 525                 kfree(obj);
 526                 return;
 527         }
 528
 529         /*
 530          * Depending on ACPI version the concatenation of id and event data
 531          * inside _WED function will result in a 8 or 16 byte buffer.
 532          */
 533         location = (u32 *)obj->buffer.pointer;
 534         if (obj->buffer.length == 8) {
 535                 event_id = *location;
 536                 event_data = *(location + 1);
 537         } else if (obj->buffer.length == 16) {
 538                 event_id = *location;
 539                 event_data = *(location + 2);
 540         } else {
 541                 pr_info("Unknown buffer length %d\n", obj->buffer.length);
 542                 kfree(obj);
 543                 return;
 544         }
 545         kfree(obj);
 546
 547         switch (event_id) {
 548         case HPWMI_DOCK_EVENT:
 549                 if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
 550                         input_report_switch(hp_wmi_input_dev, SW_DOCK,
 551                                             hp_wmi_hw_state(HPWMI_DOCK_MASK));
 552                 if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
 553                         input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
 554                                             hp_wmi_hw_state(HPWMI_TABLET_MASK));
 555                 input_sync(hp_wmi_input_dev);
 556                 break;
 557         case HPWMI_PARK_HDD:
 558                 break;
 559         case HPWMI_SMART_ADAPTER:
 560                 break;
 561         case HPWMI_BEZEL_BUTTON:
 562                 key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
 563                 if (key_code < 0)
 564                         break;
 565
 566                 if (!sparse_keymap_report_event(hp_wmi_input_dev,
 567                                                 key_code, 1, true))
 568                         pr_info("Unknown key code - 0x%x\n", key_code);
 569                 break;
 570         case HPWMI_WIRELESS:
 571                 if (rfkill2_count) {
 572                         hp_wmi_rfkill2_refresh();
 573                         break;
 574                 }
 575
 576                 if (wifi_rfkill)
 577                         rfkill_set_states(wifi_rfkill,
 578                                           hp_wmi_get_sw_state(HPWMI_WIFI),
 579                                           hp_wmi_get_hw_state(HPWMI_WIFI));
 580                 if (bluetooth_rfkill)
 581                         rfkill_set_states(bluetooth_rfkill,
 582                                           hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
 583                                           hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
 584                 if (wwan_rfkill)
 585                         rfkill_set_states(wwan_rfkill,
 586                                           hp_wmi_get_sw_state(HPWMI_WWAN),
 587                                           hp_wmi_get_hw_state(HPWMI_WWAN));
 588                 break;
 589         case HPWMI_CPU_BATTERY_THROTTLE:
 590                 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
 591                 break;
 592         case HPWMI_LOCK_SWITCH:
 593                 break;
 594         case HPWMI_LID_SWITCH:
 595                 break;
 596         case HPWMI_SCREEN_ROTATION:
 597                 break;
 598         case HPWMI_COOLSENSE_SYSTEM_MOBILE:
 599                 break;
 600         case HPWMI_COOLSENSE_SYSTEM_HOT:
 601                 break;
 602         case HPWMI_PROXIMITY_SENSOR:
 603                 break;
 604         case HPWMI_BACKLIT_KB_BRIGHTNESS:
 605                 break;
 606         case HPWMI_PEAKSHIFT_PERIOD:
 607                 break;
 608         case HPWMI_BATTERY_CHARGE_PERIOD:
 609                 break;
 610         default:
 611                 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
 612                 break;
 613         }
 614 }
 615
 616 static int __init hp_wmi_input_setup(void)
 617 {
 618         acpi_status status;
 619         int err, val;
 620
 621         hp_wmi_input_dev = input_allocate_device();
 622         if (!hp_wmi_input_dev)
 623                 return -ENOMEM;
 624
 625         hp_wmi_input_dev->name = "HP WMI hotkeys";
 626         hp_wmi_input_dev->phys = "wmi/input0";
 627         hp_wmi_input_dev->id.bustype = BUS_HOST;
 628
 629         __set_bit(EV_SW, hp_wmi_input_dev->evbit);
 630
 631         /* Dock */
 632         val = hp_wmi_hw_state(HPWMI_DOCK_MASK);
 633         if (!(val < 0)) {
 634                 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
 635                 input_report_switch(hp_wmi_input_dev, SW_DOCK, val);
 636         }
 637
 638         /* Tablet mode */
 639         val = hp_wmi_hw_state(HPWMI_TABLET_MASK);
 640         if (!(val < 0)) {
 641                 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
 642                 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val);
 643         }
 644
 645         err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
 646         if (err)
 647                 goto err_free_dev;
 648
 649         /* Set initial hardware state */
 650         input_sync(hp_wmi_input_dev);
 651
 652         if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
 653                 hp_wmi_enable_hotkeys();
 654
 655         status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
 656         if (ACPI_FAILURE(status)) {
 657                 err = -EIO;
 658                 goto err_free_dev;
 659         }
 660
 661         err = input_register_device(hp_wmi_input_dev);
 662         if (err)
 663                 goto err_uninstall_notifier;
 664
 665         return 0;
 666
 667  err_uninstall_notifier:
 668         wmi_remove_notify_handler(HPWMI_EVENT_GUID);
 669  err_free_dev:
 670         input_free_device(hp_wmi_input_dev);
 671         return err;
 672 }
 673
 674 static void hp_wmi_input_destroy(void)
 675 {
 676         wmi_remove_notify_handler(HPWMI_EVENT_GUID);
 677         input_unregister_device(hp_wmi_input_dev);
 678 }
 679
 680 static void cleanup_sysfs(struct platform_device *device)
 681 {
 682         device_remove_file(&device->dev, &dev_attr_display);
 683         device_remove_file(&device->dev, &dev_attr_hddtemp);
 684         device_remove_file(&device->dev, &dev_attr_als);
 685         device_remove_file(&device->dev, &dev_attr_dock);
 686         device_remove_file(&device->dev, &dev_attr_tablet);
 687         device_remove_file(&device->dev, &dev_attr_postcode);
 688 }
 689
 690 static int __init hp_wmi_rfkill_setup(struct platform_device *device)
 691 {
 692         int err, wireless;
 693
 694         wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
 695         if (wireless < 0)
 696                 return wireless;
 697
 698         err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE, &wireless,
 699                                    sizeof(wireless), 0);
 700         if (err)
 701                 return err;
 702
 703         if (wireless & 0x1) {
 704                 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
 705                                            RFKILL_TYPE_WLAN,
 706                                            &hp_wmi_rfkill_ops,
 707                                            (void *) HPWMI_WIFI);
 708                 if (!wifi_rfkill)
 709                         return -ENOMEM;
 710                 rfkill_init_sw_state(wifi_rfkill,
 711                                      hp_wmi_get_sw_state(HPWMI_WIFI));
 712                 rfkill_set_hw_state(wifi_rfkill,
 713                                     hp_wmi_get_hw_state(HPWMI_WIFI));
 714                 err = rfkill_register(wifi_rfkill);
 715                 if (err)
 716                         goto register_wifi_error;
 717         }
 718
 719         if (wireless & 0x2) {
 720                 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
 721                                                 RFKILL_TYPE_BLUETOOTH,
 722                                                 &hp_wmi_rfkill_ops,
 723                                                 (void *) HPWMI_BLUETOOTH);
 724                 if (!bluetooth_rfkill) {
 725                         err = -ENOMEM;
 726                         goto register_bluetooth_error;
 727                 }
 728                 rfkill_init_sw_state(bluetooth_rfkill,
 729                                      hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
 730                 rfkill_set_hw_state(bluetooth_rfkill,
 731                                     hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
 732                 err = rfkill_register(bluetooth_rfkill);
 733                 if (err)
 734                         goto register_bluetooth_error;
 735         }
 736
 737         if (wireless & 0x4) {
 738                 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
 739                                            RFKILL_TYPE_WWAN,
 740                                            &hp_wmi_rfkill_ops,
 741                                            (void *) HPWMI_WWAN);
 742                 if (!wwan_rfkill) {
 743                         err = -ENOMEM;
 744                         goto register_wwan_error;
 745                 }
 746                 rfkill_init_sw_state(wwan_rfkill,
 747                                      hp_wmi_get_sw_state(HPWMI_WWAN));
 748                 rfkill_set_hw_state(wwan_rfkill,
 749                                     hp_wmi_get_hw_state(HPWMI_WWAN));
 750                 err = rfkill_register(wwan_rfkill);
 751                 if (err)
 752                         goto register_wwan_error;
 753         }
 754
 755         return 0;
 756
 757 register_wwan_error:
 758         rfkill_destroy(wwan_rfkill);
 759         wwan_rfkill = NULL;
 760         if (bluetooth_rfkill)
 761                 rfkill_unregister(bluetooth_rfkill);
 762 register_bluetooth_error:
 763         rfkill_destroy(bluetooth_rfkill);
 764         bluetooth_rfkill = NULL;
 765         if (wifi_rfkill)
 766                 rfkill_unregister(wifi_rfkill);
 767 register_wifi_error:
 768         rfkill_destroy(wifi_rfkill);
 769         wifi_rfkill = NULL;
 770         return err;
 771 }
 772
 773 static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
 774 {
 775         struct bios_rfkill2_state state;
 776         int err, i;
 777
 778         err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
 779                                    0, sizeof(state));
 780         if (err)
 781                 return err < 0 ? err : -EINVAL;
 782
 783         if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
 784                 pr_warn("unable to parse 0x1b query output\n");
 785                 return -EINVAL;
 786         }
 787
 788         for (i = 0; i < state.count; i++) {
 789                 struct rfkill *rfkill;
 790                 enum rfkill_type type;
 791                 char *name;
 792                 switch (state.device[i].radio_type) {
 793                 case HPWMI_WIFI:
 794                         type = RFKILL_TYPE_WLAN;
 795                         name = "hp-wifi";
 796                         break;
 797                 case HPWMI_BLUETOOTH:
 798                         type = RFKILL_TYPE_BLUETOOTH;
 799                         name = "hp-bluetooth";
 800                         break;
 801                 case HPWMI_WWAN:
 802                         type = RFKILL_TYPE_WWAN;
 803                         name = "hp-wwan";
 804                         break;
 805                 case HPWMI_GPS:
 806                         type = RFKILL_TYPE_GPS;
 807                         name = "hp-gps";
 808                         break;
 809                 default:
 810                         pr_warn("unknown device type 0x%x\n",
 811                                 state.device[i].radio_type);
 812                         continue;
 813                 }
 814
 815                 if (!state.device[i].vendor_id) {
 816                         pr_warn("zero device %d while %d reported\n",
 817                                 i, state.count);
 818                         continue;
 819                 }
 820
 821                 rfkill = rfkill_alloc(name, &device->dev, type,
 822                                       &hp_wmi_rfkill2_ops, (void *)(long)i);
 823                 if (!rfkill) {
 824                         err = -ENOMEM;
 825                         goto fail;
 826                 }
 827
 828                 rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
 829                 rfkill2[rfkill2_count].num = i;
 830                 rfkill2[rfkill2_count].rfkill = rfkill;
 831
 832                 rfkill_init_sw_state(rfkill,
 833                                      IS_SWBLOCKED(state.device[i].power));
 834                 rfkill_set_hw_state(rfkill,
 835                                     IS_HWBLOCKED(state.device[i].power));
 836
 837                 if (!(state.device[i].power & HPWMI_POWER_BIOS))
 838                         pr_info("device %s blocked by BIOS\n", name);
 839
 840                 err = rfkill_register(rfkill);
 841                 if (err) {
 842                         rfkill_destroy(rfkill);
 843                         goto fail;
 844                 }
 845
 846                 rfkill2_count++;
 847         }
 848
 849         return 0;
 850 fail:
 851         for (; rfkill2_count > 0; rfkill2_count--) {
 852                 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
 853                 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
 854         }
 855         return err;
 856 }
 857
 858 static int __init hp_wmi_bios_setup(struct platform_device *device)
 859 {
 860         int err;
 861
 862         /* clear detected rfkill devices */
 863         wifi_rfkill = NULL;
 864         bluetooth_rfkill = NULL;
 865         wwan_rfkill = NULL;
 866         rfkill2_count = 0;
 867
 868         if (hp_wmi_rfkill_setup(device))
 869                 hp_wmi_rfkill2_setup(device);
 870
 871         err = device_create_file(&device->dev, &dev_attr_display);
 872         if (err)
 873                 goto add_sysfs_error;
 874         err = device_create_file(&device->dev, &dev_attr_hddtemp);
 875         if (err)
 876                 goto add_sysfs_error;
 877         err = device_create_file(&device->dev, &dev_attr_als);
 878         if (err)
 879                 goto add_sysfs_error;
 880         err = device_create_file(&device->dev, &dev_attr_dock);
 881         if (err)
 882                 goto add_sysfs_error;
 883         err = device_create_file(&device->dev, &dev_attr_tablet);
 884         if (err)
 885                 goto add_sysfs_error;
 886         err = device_create_file(&device->dev, &dev_attr_postcode);
 887         if (err)
 888                 goto add_sysfs_error;
 889         return 0;
 890
 891 add_sysfs_error:
 892         cleanup_sysfs(device);
 893         return err;
 894 }
 895
 896 static int __exit hp_wmi_bios_remove(struct platform_device *device)
 897 {
 898         int i;
 899         cleanup_sysfs(device);
 900
 901         for (i = 0; i < rfkill2_count; i++) {
 902                 rfkill_unregister(rfkill2[i].rfkill);
 903                 rfkill_destroy(rfkill2[i].rfkill);
 904         }
 905
 906         if (wifi_rfkill) {
 907                 rfkill_unregister(wifi_rfkill);
 908                 rfkill_destroy(wifi_rfkill);
 909         }
 910         if (bluetooth_rfkill) {
 911                 rfkill_unregister(bluetooth_rfkill);
 912                 rfkill_destroy(bluetooth_rfkill);
 913         }
 914         if (wwan_rfkill) {
 915                 rfkill_unregister(wwan_rfkill);
 916                 rfkill_destroy(wwan_rfkill);
 917         }
 918
 919         return 0;
 920 }
 921
 922 static int hp_wmi_resume_handler(struct device *device)
 923 {
 924         /*
 925          * Hardware state may have changed while suspended, so trigger
 926          * input events for the current state. As this is a switch,
 927          * the input layer will only actually pass it on if the state
 928          * changed.
 929          */
 930         if (hp_wmi_input_dev) {
 931                 if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
 932                         input_report_switch(hp_wmi_input_dev, SW_DOCK,
 933                                             hp_wmi_hw_state(HPWMI_DOCK_MASK));
 934                 if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
 935                         input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
 936                                             hp_wmi_hw_state(HPWMI_TABLET_MASK));
 937                 input_sync(hp_wmi_input_dev);
 938         }
 939
 940         if (rfkill2_count)
 941                 hp_wmi_rfkill2_refresh();
 942
 943         if (wifi_rfkill)
 944                 rfkill_set_states(wifi_rfkill,
 945                                   hp_wmi_get_sw_state(HPWMI_WIFI),
 946                                   hp_wmi_get_hw_state(HPWMI_WIFI));
 947         if (bluetooth_rfkill)
 948                 rfkill_set_states(bluetooth_rfkill,
 949                                   hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
 950                                   hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
 951         if (wwan_rfkill)
 952                 rfkill_set_states(wwan_rfkill,
 953                                   hp_wmi_get_sw_state(HPWMI_WWAN),
 954                                   hp_wmi_get_hw_state(HPWMI_WWAN));
 955
 956         return 0;
 957 }
 958
 959 static const struct dev_pm_ops hp_wmi_pm_ops = {
 960         .resume  = hp_wmi_resume_handler,
 961         .restore  = hp_wmi_resume_handler,
 962 };
 963
 964 static struct platform_driver hp_wmi_driver = {
 965         .driver = {
 966                 .name = "hp-wmi",
 967                 .pm = &hp_wmi_pm_ops,
 968         },
 969         .remove = __exit_p(hp_wmi_bios_remove),
 970 };
 971
 972 static int __init hp_wmi_init(void)
 973 {
 974         int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
 975         int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
 976         int err;
 977
 978         if (!bios_capable && !event_capable)
 979                 return -ENODEV;
 980
 981         if (event_capable) {
 982                 err = hp_wmi_input_setup();
 983                 if (err)
 984                         return err;
 985         }
 986
 987         if (bios_capable) {
 988                 hp_wmi_platform_dev =
 989                         platform_device_register_simple("hp-wmi", -1, NULL, 0);
 990                 if (IS_ERR(hp_wmi_platform_dev)) {
 991                         err = PTR_ERR(hp_wmi_platform_dev);
 992                         goto err_destroy_input;
 993                 }
 994
 995                 err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
 996                 if (err)
 997                         goto err_unregister_device;
 998         }
 999
1000         return 0;
1001
1002 err_unregister_device:
1003         platform_device_unregister(hp_wmi_platform_dev);
1004 err_destroy_input:
1005         if (event_capable)
1006                 hp_wmi_input_destroy();
1007
1008         return err;
1009 }
1010 module_init(hp_wmi_init);
1011
1012 static void __exit hp_wmi_exit(void)
1013 {
1014         if (wmi_has_guid(HPWMI_EVENT_GUID))
1015                 hp_wmi_input_destroy();
1016
1017         if (hp_wmi_platform_dev) {
1018                 platform_device_unregister(hp_wmi_platform_dev);
1019                 platform_driver_unregister(&hp_wmi_driver);
1020         }
1021 }
1022 module_exit(hp_wmi_exit);