1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HP WMI hotkeys 4 * 5 * Copyright (C) 2008 Red Hat <mjg@redhat.com> 6 * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi> 7 * 8 * Portions based on wistron_btns.c: 9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz> 10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org> 11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru> 12 */ 13 14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/slab.h> 20 #include <linux/types.h> 21 #include <linux/input.h> 22 #include <linux/input/sparse-keymap.h> 23 #include <linux/platform_device.h> 24 #include <linux/platform_profile.h> 25 #include <linux/hwmon.h> 26 #include <linux/acpi.h> 27 #include <linux/rfkill.h> 28 #include <linux/string.h> 29 #include <linux/dmi.h> 30 31 MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>"); 32 MODULE_DESCRIPTION("HP laptop WMI hotkeys driver"); 33 MODULE_LICENSE("GPL"); 34 35 MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C"); 36 MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4"); 37 38 #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C" 39 #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4" 40 #define HP_OMEN_EC_THERMAL_PROFILE_OFFSET 0x95 41 #define zero_if_sup(tmp) (zero_insize_support?0:sizeof(tmp)) // use when zero insize is required 42 43 /* DMI board names of devices that should use the omen specific path for 44 * thermal profiles. 45 * This was obtained by taking a look in the windows omen command center 46 * app and parsing a json file that they use to figure out what capabilities 47 * the device should have. 48 * A device is considered an omen if the DisplayName in that list contains 49 * "OMEN", and it can use the thermal profile stuff if the "Feature" array 50 * contains "PerformanceControl". 51 */ 52 static const char * const omen_thermal_profile_boards[] = { 53 "84DA", "84DB", "84DC", "8574", "8575", "860A", "87B5", "8572", "8573", 54 "8600", "8601", "8602", "8605", "8606", "8607", "8746", "8747", "8749", 55 "874A", "8603", "8604", "8748", "886B", "886C", "878A", "878B", "878C", 56 "88C8", "88CB", "8786", "8787", "8788", "88D1", "88D2", "88F4", "88FD", 57 "88F5", "88F6", "88F7", "88FE", "88FF", "8900", "8901", "8902", "8912", 58 "8917", "8918", "8949", "894A", "89EB" 59 }; 60 61 /* DMI Board names of Omen laptops that are specifically set to be thermal 62 * profile version 0 by the Omen Command Center app, regardless of what 63 * the get system design information WMI call returns 64 */ 65 static const char *const omen_thermal_profile_force_v0_boards[] = { 66 "8607", "8746", "8747", "8749", "874A", "8748" 67 }; 68 69 enum hp_wmi_radio { 70 HPWMI_WIFI = 0x0, 71 HPWMI_BLUETOOTH = 0x1, 72 HPWMI_WWAN = 0x2, 73 HPWMI_GPS = 0x3, 74 }; 75 76 enum hp_wmi_event_ids { 77 HPWMI_DOCK_EVENT = 0x01, 78 HPWMI_PARK_HDD = 0x02, 79 HPWMI_SMART_ADAPTER = 0x03, 80 HPWMI_BEZEL_BUTTON = 0x04, 81 HPWMI_WIRELESS = 0x05, 82 HPWMI_CPU_BATTERY_THROTTLE = 0x06, 83 HPWMI_LOCK_SWITCH = 0x07, 84 HPWMI_LID_SWITCH = 0x08, 85 HPWMI_SCREEN_ROTATION = 0x09, 86 HPWMI_COOLSENSE_SYSTEM_MOBILE = 0x0A, 87 HPWMI_COOLSENSE_SYSTEM_HOT = 0x0B, 88 HPWMI_PROXIMITY_SENSOR = 0x0C, 89 HPWMI_BACKLIT_KB_BRIGHTNESS = 0x0D, 90 HPWMI_PEAKSHIFT_PERIOD = 0x0F, 91 HPWMI_BATTERY_CHARGE_PERIOD = 0x10, 92 HPWMI_SANITIZATION_MODE = 0x17, 93 HPWMI_OMEN_KEY = 0x1D, 94 HPWMI_SMART_EXPERIENCE_APP = 0x21, 95 }; 96 97 /* 98 * struct bios_args buffer is dynamically allocated. New WMI command types 99 * were introduced that exceeds 128-byte data size. Changes to handle 100 * the data size allocation scheme were kept in hp_wmi_perform_qurey function. 101 */ 102 struct bios_args { 103 u32 signature; 104 u32 command; 105 u32 commandtype; 106 u32 datasize; 107 u8 data[]; 108 }; 109 110 enum hp_wmi_commandtype { 111 HPWMI_DISPLAY_QUERY = 0x01, 112 HPWMI_HDDTEMP_QUERY = 0x02, 113 HPWMI_ALS_QUERY = 0x03, 114 HPWMI_HARDWARE_QUERY = 0x04, 115 HPWMI_WIRELESS_QUERY = 0x05, 116 HPWMI_BATTERY_QUERY = 0x07, 117 HPWMI_BIOS_QUERY = 0x09, 118 HPWMI_FEATURE_QUERY = 0x0b, 119 HPWMI_HOTKEY_QUERY = 0x0c, 120 HPWMI_FEATURE2_QUERY = 0x0d, 121 HPWMI_WIRELESS2_QUERY = 0x1b, 122 HPWMI_POSTCODEERROR_QUERY = 0x2a, 123 HPWMI_SYSTEM_DEVICE_MODE = 0x40, 124 HPWMI_THERMAL_PROFILE_QUERY = 0x4c, 125 }; 126 127 enum hp_wmi_gm_commandtype { 128 HPWMI_FAN_SPEED_GET_QUERY = 0x11, 129 HPWMI_SET_PERFORMANCE_MODE = 0x1A, 130 HPWMI_FAN_SPEED_MAX_GET_QUERY = 0x26, 131 HPWMI_FAN_SPEED_MAX_SET_QUERY = 0x27, 132 HPWMI_GET_SYSTEM_DESIGN_DATA = 0x28, 133 }; 134 135 enum hp_wmi_command { 136 HPWMI_READ = 0x01, 137 HPWMI_WRITE = 0x02, 138 HPWMI_ODM = 0x03, 139 HPWMI_GM = 0x20008, 140 }; 141 142 enum hp_wmi_hardware_mask { 143 HPWMI_DOCK_MASK = 0x01, 144 HPWMI_TABLET_MASK = 0x04, 145 }; 146 147 struct bios_return { 148 u32 sigpass; 149 u32 return_code; 150 }; 151 152 enum hp_return_value { 153 HPWMI_RET_WRONG_SIGNATURE = 0x02, 154 HPWMI_RET_UNKNOWN_COMMAND = 0x03, 155 HPWMI_RET_UNKNOWN_CMDTYPE = 0x04, 156 HPWMI_RET_INVALID_PARAMETERS = 0x05, 157 }; 158 159 enum hp_wireless2_bits { 160 HPWMI_POWER_STATE = 0x01, 161 HPWMI_POWER_SOFT = 0x02, 162 HPWMI_POWER_BIOS = 0x04, 163 HPWMI_POWER_HARD = 0x08, 164 HPWMI_POWER_FW_OR_HW = HPWMI_POWER_BIOS | HPWMI_POWER_HARD, 165 }; 166 167 enum hp_thermal_profile_omen_v0 { 168 HP_OMEN_V0_THERMAL_PROFILE_DEFAULT = 0x00, 169 HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE = 0x01, 170 HP_OMEN_V0_THERMAL_PROFILE_COOL = 0x02, 171 }; 172 173 enum hp_thermal_profile_omen_v1 { 174 HP_OMEN_V1_THERMAL_PROFILE_DEFAULT = 0x30, 175 HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE = 0x31, 176 HP_OMEN_V1_THERMAL_PROFILE_COOL = 0x50, 177 }; 178 179 enum hp_thermal_profile { 180 HP_THERMAL_PROFILE_PERFORMANCE = 0x00, 181 HP_THERMAL_PROFILE_DEFAULT = 0x01, 182 HP_THERMAL_PROFILE_COOL = 0x02, 183 HP_THERMAL_PROFILE_QUIET = 0x03, 184 }; 185 186 #define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW) 187 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT) 188 189 struct bios_rfkill2_device_state { 190 u8 radio_type; 191 u8 bus_type; 192 u16 vendor_id; 193 u16 product_id; 194 u16 subsys_vendor_id; 195 u16 subsys_product_id; 196 u8 rfkill_id; 197 u8 power; 198 u8 unknown[4]; 199 }; 200 201 /* 7 devices fit into the 128 byte buffer */ 202 #define HPWMI_MAX_RFKILL2_DEVICES 7 203 204 struct bios_rfkill2_state { 205 u8 unknown[7]; 206 u8 count; 207 u8 pad[8]; 208 struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES]; 209 }; 210 211 static const struct key_entry hp_wmi_keymap[] = { 212 { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } }, 213 { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } }, 214 { KE_KEY, 0x20e6, { KEY_PROG1 } }, 215 { KE_KEY, 0x20e8, { KEY_MEDIA } }, 216 { KE_KEY, 0x2142, { KEY_MEDIA } }, 217 { KE_KEY, 0x213b, { KEY_INFO } }, 218 { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } }, 219 { KE_KEY, 0x216a, { KEY_SETUP } }, 220 { KE_KEY, 0x21a5, { KEY_PROG2 } }, /* HP Omen Key */ 221 { KE_KEY, 0x21a7, { KEY_FN_ESC } }, 222 { KE_KEY, 0x21a9, { KEY_TOUCHPAD_OFF } }, 223 { KE_KEY, 0x121a9, { KEY_TOUCHPAD_ON } }, 224 { KE_KEY, 0x231b, { KEY_HELP } }, 225 { KE_END, 0 } 226 }; 227 228 static struct input_dev *hp_wmi_input_dev; 229 static struct platform_device *hp_wmi_platform_dev; 230 static struct platform_profile_handler platform_profile_handler; 231 static bool platform_profile_support; 232 static bool zero_insize_support; 233 234 static struct rfkill *wifi_rfkill; 235 static struct rfkill *bluetooth_rfkill; 236 static struct rfkill *wwan_rfkill; 237 238 struct rfkill2_device { 239 u8 id; 240 int num; 241 struct rfkill *rfkill; 242 }; 243 244 static int rfkill2_count; 245 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES]; 246 247 /* 248 * Chassis Types values were obtained from SMBIOS reference 249 * specification version 3.00. A complete list of system enclosures 250 * and chassis types is available on Table 17. 251 */ 252 static const char * const tablet_chassis_types[] = { 253 "30", /* Tablet*/ 254 "31", /* Convertible */ 255 "32" /* Detachable */ 256 }; 257 258 #define DEVICE_MODE_TABLET 0x06 259 260 /* map output size to the corresponding WMI method id */ 261 static inline int encode_outsize_for_pvsz(int outsize) 262 { 263 if (outsize > 4096) 264 return -EINVAL; 265 if (outsize > 1024) 266 return 5; 267 if (outsize > 128) 268 return 4; 269 if (outsize > 4) 270 return 3; 271 if (outsize > 0) 272 return 2; 273 return 1; 274 } 275 276 /* 277 * hp_wmi_perform_query 278 * 279 * query: The commandtype (enum hp_wmi_commandtype) 280 * write: The command (enum hp_wmi_command) 281 * buffer: Buffer used as input and/or output 282 * insize: Size of input buffer 283 * outsize: Size of output buffer 284 * 285 * returns zero on success 286 * an HP WMI query specific error code (which is positive) 287 * -EINVAL if the query was not successful at all 288 * -EINVAL if the output buffer size exceeds buffersize 289 * 290 * Note: The buffersize must at least be the maximum of the input and output 291 * size. E.g. Battery info query is defined to have 1 byte input 292 * and 128 byte output. The caller would do: 293 * buffer = kzalloc(128, GFP_KERNEL); 294 * ret = hp_wmi_perform_query(HPWMI_BATTERY_QUERY, HPWMI_READ, buffer, 1, 128) 295 */ 296 static int hp_wmi_perform_query(int query, enum hp_wmi_command command, 297 void *buffer, int insize, int outsize) 298 { 299 struct acpi_buffer input, output = { ACPI_ALLOCATE_BUFFER, NULL }; 300 struct bios_return *bios_return; 301 union acpi_object *obj = NULL; 302 struct bios_args *args = NULL; 303 int mid, actual_insize, actual_outsize; 304 size_t bios_args_size; 305 int ret; 306 307 mid = encode_outsize_for_pvsz(outsize); 308 if (WARN_ON(mid < 0)) 309 return mid; 310 311 actual_insize = max(insize, 128); 312 bios_args_size = struct_size(args, data, actual_insize); 313 args = kmalloc(bios_args_size, GFP_KERNEL); 314 if (!args) 315 return -ENOMEM; 316 317 input.length = bios_args_size; 318 input.pointer = args; 319 320 args->signature = 0x55434553; 321 args->command = command; 322 args->commandtype = query; 323 args->datasize = insize; 324 memcpy(args->data, buffer, flex_array_size(args, data, insize)); 325 326 ret = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, mid, &input, &output); 327 if (ret) 328 goto out_free; 329 330 obj = output.pointer; 331 if (!obj) { 332 ret = -EINVAL; 333 goto out_free; 334 } 335 336 if (obj->type != ACPI_TYPE_BUFFER) { 337 pr_warn("query 0x%x returned an invalid object 0x%x\n", query, ret); 338 ret = -EINVAL; 339 goto out_free; 340 } 341 342 bios_return = (struct bios_return *)obj->buffer.pointer; 343 ret = bios_return->return_code; 344 345 if (ret) { 346 if (ret != HPWMI_RET_UNKNOWN_COMMAND && 347 ret != HPWMI_RET_UNKNOWN_CMDTYPE) 348 pr_warn("query 0x%x returned error 0x%x\n", query, ret); 349 goto out_free; 350 } 351 352 /* Ignore output data of zero size */ 353 if (!outsize) 354 goto out_free; 355 356 actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return))); 357 memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize); 358 memset(buffer + actual_outsize, 0, outsize - actual_outsize); 359 360 out_free: 361 kfree(obj); 362 kfree(args); 363 return ret; 364 } 365 366 static int hp_wmi_get_fan_speed(int fan) 367 { 368 u8 fsh, fsl; 369 char fan_data[4] = { fan, 0, 0, 0 }; 370 371 int ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_GET_QUERY, HPWMI_GM, 372 &fan_data, sizeof(char), 373 sizeof(fan_data)); 374 375 if (ret != 0) 376 return -EINVAL; 377 378 fsh = fan_data[2]; 379 fsl = fan_data[3]; 380 381 return (fsh << 8) | fsl; 382 } 383 384 static int hp_wmi_read_int(int query) 385 { 386 int val = 0, ret; 387 388 ret = hp_wmi_perform_query(query, HPWMI_READ, &val, 389 zero_if_sup(val), sizeof(val)); 390 391 if (ret) 392 return ret < 0 ? ret : -EINVAL; 393 394 return val; 395 } 396 397 static int hp_wmi_get_dock_state(void) 398 { 399 int state = hp_wmi_read_int(HPWMI_HARDWARE_QUERY); 400 401 if (state < 0) 402 return state; 403 404 return !!(state & HPWMI_DOCK_MASK); 405 } 406 407 static int hp_wmi_get_tablet_mode(void) 408 { 409 char system_device_mode[4] = { 0 }; 410 const char *chassis_type; 411 bool tablet_found; 412 int ret; 413 414 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 415 if (!chassis_type) 416 return -ENODEV; 417 418 tablet_found = match_string(tablet_chassis_types, 419 ARRAY_SIZE(tablet_chassis_types), 420 chassis_type) >= 0; 421 if (!tablet_found) 422 return -ENODEV; 423 424 ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ, 425 system_device_mode, zero_if_sup(system_device_mode), 426 sizeof(system_device_mode)); 427 if (ret < 0) 428 return ret; 429 430 return system_device_mode[0] == DEVICE_MODE_TABLET; 431 } 432 433 static int omen_thermal_profile_set(int mode) 434 { 435 char buffer[2] = {0, mode}; 436 int ret; 437 438 ret = hp_wmi_perform_query(HPWMI_SET_PERFORMANCE_MODE, HPWMI_GM, 439 &buffer, sizeof(buffer), 0); 440 441 if (ret) 442 return ret < 0 ? ret : -EINVAL; 443 444 return mode; 445 } 446 447 static bool is_omen_thermal_profile(void) 448 { 449 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); 450 451 if (!board_name) 452 return false; 453 454 return match_string(omen_thermal_profile_boards, 455 ARRAY_SIZE(omen_thermal_profile_boards), 456 board_name) >= 0; 457 } 458 459 static int omen_get_thermal_policy_version(void) 460 { 461 unsigned char buffer[8] = { 0 }; 462 int ret; 463 464 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); 465 466 if (board_name) { 467 int matches = match_string(omen_thermal_profile_force_v0_boards, 468 ARRAY_SIZE(omen_thermal_profile_force_v0_boards), 469 board_name); 470 if (matches >= 0) 471 return 0; 472 } 473 474 ret = hp_wmi_perform_query(HPWMI_GET_SYSTEM_DESIGN_DATA, HPWMI_GM, 475 &buffer, sizeof(buffer), sizeof(buffer)); 476 477 if (ret) 478 return ret < 0 ? ret : -EINVAL; 479 480 return buffer[3]; 481 } 482 483 static int omen_thermal_profile_get(void) 484 { 485 u8 data; 486 487 int ret = ec_read(HP_OMEN_EC_THERMAL_PROFILE_OFFSET, &data); 488 489 if (ret) 490 return ret; 491 492 return data; 493 } 494 495 static int hp_wmi_fan_speed_max_set(int enabled) 496 { 497 int ret; 498 499 ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_SET_QUERY, HPWMI_GM, 500 &enabled, sizeof(enabled), 0); 501 502 if (ret) 503 return ret < 0 ? ret : -EINVAL; 504 505 return enabled; 506 } 507 508 static int hp_wmi_fan_speed_max_get(void) 509 { 510 int val = 0, ret; 511 512 ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_GET_QUERY, HPWMI_GM, 513 &val, zero_if_sup(val), sizeof(val)); 514 515 if (ret) 516 return ret < 0 ? ret : -EINVAL; 517 518 return val; 519 } 520 521 static int __init hp_wmi_bios_2008_later(void) 522 { 523 int state = 0; 524 int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, HPWMI_READ, &state, 525 zero_if_sup(state), sizeof(state)); 526 if (!ret) 527 return 1; 528 529 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO; 530 } 531 532 static int __init hp_wmi_bios_2009_later(void) 533 { 534 u8 state[128]; 535 int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state, 536 zero_if_sup(state), sizeof(state)); 537 if (!ret) 538 return 1; 539 540 return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO; 541 } 542 543 static int __init hp_wmi_enable_hotkeys(void) 544 { 545 int value = 0x6e; 546 int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, HPWMI_WRITE, &value, 547 sizeof(value), 0); 548 549 return ret <= 0 ? ret : -EINVAL; 550 } 551 552 static int hp_wmi_set_block(void *data, bool blocked) 553 { 554 enum hp_wmi_radio r = (enum hp_wmi_radio) data; 555 int query = BIT(r + 8) | ((!blocked) << r); 556 int ret; 557 558 ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE, 559 &query, sizeof(query), 0); 560 561 return ret <= 0 ? ret : -EINVAL; 562 } 563 564 static const struct rfkill_ops hp_wmi_rfkill_ops = { 565 .set_block = hp_wmi_set_block, 566 }; 567 568 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r) 569 { 570 int mask = 0x200 << (r * 8); 571 572 int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY); 573 574 /* TBD: Pass error */ 575 WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY"); 576 577 return !(wireless & mask); 578 } 579 580 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r) 581 { 582 int mask = 0x800 << (r * 8); 583 584 int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY); 585 586 /* TBD: Pass error */ 587 WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY"); 588 589 return !(wireless & mask); 590 } 591 592 static int hp_wmi_rfkill2_set_block(void *data, bool blocked) 593 { 594 int rfkill_id = (int)(long)data; 595 char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked }; 596 int ret; 597 598 ret = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_WRITE, 599 buffer, sizeof(buffer), 0); 600 601 return ret <= 0 ? ret : -EINVAL; 602 } 603 604 static const struct rfkill_ops hp_wmi_rfkill2_ops = { 605 .set_block = hp_wmi_rfkill2_set_block, 606 }; 607 608 static int hp_wmi_rfkill2_refresh(void) 609 { 610 struct bios_rfkill2_state state; 611 int err, i; 612 613 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state, 614 zero_if_sup(state), sizeof(state)); 615 if (err) 616 return err; 617 618 for (i = 0; i < rfkill2_count; i++) { 619 int num = rfkill2[i].num; 620 struct bios_rfkill2_device_state *devstate; 621 622 devstate = &state.device[num]; 623 624 if (num >= state.count || 625 devstate->rfkill_id != rfkill2[i].id) { 626 pr_warn("power configuration of the wireless devices unexpectedly changed\n"); 627 continue; 628 } 629 630 rfkill_set_states(rfkill2[i].rfkill, 631 IS_SWBLOCKED(devstate->power), 632 IS_HWBLOCKED(devstate->power)); 633 } 634 635 return 0; 636 } 637 638 static ssize_t display_show(struct device *dev, struct device_attribute *attr, 639 char *buf) 640 { 641 int value = hp_wmi_read_int(HPWMI_DISPLAY_QUERY); 642 643 if (value < 0) 644 return value; 645 return sprintf(buf, "%d\n", value); 646 } 647 648 static ssize_t hddtemp_show(struct device *dev, struct device_attribute *attr, 649 char *buf) 650 { 651 int value = hp_wmi_read_int(HPWMI_HDDTEMP_QUERY); 652 653 if (value < 0) 654 return value; 655 return sprintf(buf, "%d\n", value); 656 } 657 658 static ssize_t als_show(struct device *dev, struct device_attribute *attr, 659 char *buf) 660 { 661 int value = hp_wmi_read_int(HPWMI_ALS_QUERY); 662 663 if (value < 0) 664 return value; 665 return sprintf(buf, "%d\n", value); 666 } 667 668 static ssize_t dock_show(struct device *dev, struct device_attribute *attr, 669 char *buf) 670 { 671 int value = hp_wmi_get_dock_state(); 672 673 if (value < 0) 674 return value; 675 return sprintf(buf, "%d\n", value); 676 } 677 678 static ssize_t tablet_show(struct device *dev, struct device_attribute *attr, 679 char *buf) 680 { 681 int value = hp_wmi_get_tablet_mode(); 682 683 if (value < 0) 684 return value; 685 return sprintf(buf, "%d\n", value); 686 } 687 688 static ssize_t postcode_show(struct device *dev, struct device_attribute *attr, 689 char *buf) 690 { 691 /* Get the POST error code of previous boot failure. */ 692 int value = hp_wmi_read_int(HPWMI_POSTCODEERROR_QUERY); 693 694 if (value < 0) 695 return value; 696 return sprintf(buf, "0x%x\n", value); 697 } 698 699 static ssize_t als_store(struct device *dev, struct device_attribute *attr, 700 const char *buf, size_t count) 701 { 702 u32 tmp; 703 int ret; 704 705 ret = kstrtou32(buf, 10, &tmp); 706 if (ret) 707 return ret; 708 709 ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp, 710 sizeof(tmp), 0); 711 if (ret) 712 return ret < 0 ? ret : -EINVAL; 713 714 return count; 715 } 716 717 static ssize_t postcode_store(struct device *dev, struct device_attribute *attr, 718 const char *buf, size_t count) 719 { 720 u32 tmp = 1; 721 bool clear; 722 int ret; 723 724 ret = kstrtobool(buf, &clear); 725 if (ret) 726 return ret; 727 728 if (clear == false) 729 return -EINVAL; 730 731 /* Clear the POST error code. It is kept until cleared. */ 732 ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp, 733 sizeof(tmp), 0); 734 if (ret) 735 return ret < 0 ? ret : -EINVAL; 736 737 return count; 738 } 739 740 static DEVICE_ATTR_RO(display); 741 static DEVICE_ATTR_RO(hddtemp); 742 static DEVICE_ATTR_RW(als); 743 static DEVICE_ATTR_RO(dock); 744 static DEVICE_ATTR_RO(tablet); 745 static DEVICE_ATTR_RW(postcode); 746 747 static struct attribute *hp_wmi_attrs[] = { 748 &dev_attr_display.attr, 749 &dev_attr_hddtemp.attr, 750 &dev_attr_als.attr, 751 &dev_attr_dock.attr, 752 &dev_attr_tablet.attr, 753 &dev_attr_postcode.attr, 754 NULL, 755 }; 756 ATTRIBUTE_GROUPS(hp_wmi); 757 758 static void hp_wmi_notify(u32 value, void *context) 759 { 760 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 761 u32 event_id, event_data; 762 union acpi_object *obj; 763 acpi_status status; 764 u32 *location; 765 int key_code; 766 767 status = wmi_get_event_data(value, &response); 768 if (status != AE_OK) { 769 pr_info("bad event status 0x%x\n", status); 770 return; 771 } 772 773 obj = (union acpi_object *)response.pointer; 774 775 if (!obj) 776 return; 777 if (obj->type != ACPI_TYPE_BUFFER) { 778 pr_info("Unknown response received %d\n", obj->type); 779 kfree(obj); 780 return; 781 } 782 783 /* 784 * Depending on ACPI version the concatenation of id and event data 785 * inside _WED function will result in a 8 or 16 byte buffer. 786 */ 787 location = (u32 *)obj->buffer.pointer; 788 if (obj->buffer.length == 8) { 789 event_id = *location; 790 event_data = *(location + 1); 791 } else if (obj->buffer.length == 16) { 792 event_id = *location; 793 event_data = *(location + 2); 794 } else { 795 pr_info("Unknown buffer length %d\n", obj->buffer.length); 796 kfree(obj); 797 return; 798 } 799 kfree(obj); 800 801 switch (event_id) { 802 case HPWMI_DOCK_EVENT: 803 if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit)) 804 input_report_switch(hp_wmi_input_dev, SW_DOCK, 805 hp_wmi_get_dock_state()); 806 if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit)) 807 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, 808 hp_wmi_get_tablet_mode()); 809 input_sync(hp_wmi_input_dev); 810 break; 811 case HPWMI_PARK_HDD: 812 break; 813 case HPWMI_SMART_ADAPTER: 814 break; 815 case HPWMI_BEZEL_BUTTON: 816 case HPWMI_OMEN_KEY: 817 key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY); 818 if (key_code < 0) 819 break; 820 821 if (!sparse_keymap_report_event(hp_wmi_input_dev, 822 key_code, 1, true)) 823 pr_info("Unknown key code - 0x%x\n", key_code); 824 break; 825 case HPWMI_WIRELESS: 826 if (rfkill2_count) { 827 hp_wmi_rfkill2_refresh(); 828 break; 829 } 830 831 if (wifi_rfkill) 832 rfkill_set_states(wifi_rfkill, 833 hp_wmi_get_sw_state(HPWMI_WIFI), 834 hp_wmi_get_hw_state(HPWMI_WIFI)); 835 if (bluetooth_rfkill) 836 rfkill_set_states(bluetooth_rfkill, 837 hp_wmi_get_sw_state(HPWMI_BLUETOOTH), 838 hp_wmi_get_hw_state(HPWMI_BLUETOOTH)); 839 if (wwan_rfkill) 840 rfkill_set_states(wwan_rfkill, 841 hp_wmi_get_sw_state(HPWMI_WWAN), 842 hp_wmi_get_hw_state(HPWMI_WWAN)); 843 break; 844 case HPWMI_CPU_BATTERY_THROTTLE: 845 pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n"); 846 break; 847 case HPWMI_LOCK_SWITCH: 848 break; 849 case HPWMI_LID_SWITCH: 850 break; 851 case HPWMI_SCREEN_ROTATION: 852 break; 853 case HPWMI_COOLSENSE_SYSTEM_MOBILE: 854 break; 855 case HPWMI_COOLSENSE_SYSTEM_HOT: 856 break; 857 case HPWMI_PROXIMITY_SENSOR: 858 break; 859 case HPWMI_BACKLIT_KB_BRIGHTNESS: 860 break; 861 case HPWMI_PEAKSHIFT_PERIOD: 862 break; 863 case HPWMI_BATTERY_CHARGE_PERIOD: 864 break; 865 case HPWMI_SANITIZATION_MODE: 866 break; 867 case HPWMI_SMART_EXPERIENCE_APP: 868 break; 869 default: 870 pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data); 871 break; 872 } 873 } 874 875 static int __init hp_wmi_input_setup(void) 876 { 877 acpi_status status; 878 int err, val; 879 880 hp_wmi_input_dev = input_allocate_device(); 881 if (!hp_wmi_input_dev) 882 return -ENOMEM; 883 884 hp_wmi_input_dev->name = "HP WMI hotkeys"; 885 hp_wmi_input_dev->phys = "wmi/input0"; 886 hp_wmi_input_dev->id.bustype = BUS_HOST; 887 888 __set_bit(EV_SW, hp_wmi_input_dev->evbit); 889 890 /* Dock */ 891 val = hp_wmi_get_dock_state(); 892 if (!(val < 0)) { 893 __set_bit(SW_DOCK, hp_wmi_input_dev->swbit); 894 input_report_switch(hp_wmi_input_dev, SW_DOCK, val); 895 } 896 897 /* Tablet mode */ 898 val = hp_wmi_get_tablet_mode(); 899 if (!(val < 0)) { 900 __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit); 901 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val); 902 } 903 904 err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL); 905 if (err) 906 goto err_free_dev; 907 908 /* Set initial hardware state */ 909 input_sync(hp_wmi_input_dev); 910 911 if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later()) 912 hp_wmi_enable_hotkeys(); 913 914 status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL); 915 if (ACPI_FAILURE(status)) { 916 err = -EIO; 917 goto err_free_dev; 918 } 919 920 err = input_register_device(hp_wmi_input_dev); 921 if (err) 922 goto err_uninstall_notifier; 923 924 return 0; 925 926 err_uninstall_notifier: 927 wmi_remove_notify_handler(HPWMI_EVENT_GUID); 928 err_free_dev: 929 input_free_device(hp_wmi_input_dev); 930 return err; 931 } 932 933 static void hp_wmi_input_destroy(void) 934 { 935 wmi_remove_notify_handler(HPWMI_EVENT_GUID); 936 input_unregister_device(hp_wmi_input_dev); 937 } 938 939 static int __init hp_wmi_rfkill_setup(struct platform_device *device) 940 { 941 int err, wireless; 942 943 wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY); 944 if (wireless < 0) 945 return wireless; 946 947 err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE, &wireless, 948 sizeof(wireless), 0); 949 if (err) 950 return err; 951 952 if (wireless & 0x1) { 953 wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev, 954 RFKILL_TYPE_WLAN, 955 &hp_wmi_rfkill_ops, 956 (void *) HPWMI_WIFI); 957 if (!wifi_rfkill) 958 return -ENOMEM; 959 rfkill_init_sw_state(wifi_rfkill, 960 hp_wmi_get_sw_state(HPWMI_WIFI)); 961 rfkill_set_hw_state(wifi_rfkill, 962 hp_wmi_get_hw_state(HPWMI_WIFI)); 963 err = rfkill_register(wifi_rfkill); 964 if (err) 965 goto register_wifi_error; 966 } 967 968 if (wireless & 0x2) { 969 bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev, 970 RFKILL_TYPE_BLUETOOTH, 971 &hp_wmi_rfkill_ops, 972 (void *) HPWMI_BLUETOOTH); 973 if (!bluetooth_rfkill) { 974 err = -ENOMEM; 975 goto register_bluetooth_error; 976 } 977 rfkill_init_sw_state(bluetooth_rfkill, 978 hp_wmi_get_sw_state(HPWMI_BLUETOOTH)); 979 rfkill_set_hw_state(bluetooth_rfkill, 980 hp_wmi_get_hw_state(HPWMI_BLUETOOTH)); 981 err = rfkill_register(bluetooth_rfkill); 982 if (err) 983 goto register_bluetooth_error; 984 } 985 986 if (wireless & 0x4) { 987 wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev, 988 RFKILL_TYPE_WWAN, 989 &hp_wmi_rfkill_ops, 990 (void *) HPWMI_WWAN); 991 if (!wwan_rfkill) { 992 err = -ENOMEM; 993 goto register_wwan_error; 994 } 995 rfkill_init_sw_state(wwan_rfkill, 996 hp_wmi_get_sw_state(HPWMI_WWAN)); 997 rfkill_set_hw_state(wwan_rfkill, 998 hp_wmi_get_hw_state(HPWMI_WWAN)); 999 err = rfkill_register(wwan_rfkill); 1000 if (err) 1001 goto register_wwan_error; 1002 } 1003 1004 return 0; 1005 1006 register_wwan_error: 1007 rfkill_destroy(wwan_rfkill); 1008 wwan_rfkill = NULL; 1009 if (bluetooth_rfkill) 1010 rfkill_unregister(bluetooth_rfkill); 1011 register_bluetooth_error: 1012 rfkill_destroy(bluetooth_rfkill); 1013 bluetooth_rfkill = NULL; 1014 if (wifi_rfkill) 1015 rfkill_unregister(wifi_rfkill); 1016 register_wifi_error: 1017 rfkill_destroy(wifi_rfkill); 1018 wifi_rfkill = NULL; 1019 return err; 1020 } 1021 1022 static int __init hp_wmi_rfkill2_setup(struct platform_device *device) 1023 { 1024 struct bios_rfkill2_state state; 1025 int err, i; 1026 1027 err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state, 1028 zero_if_sup(state), sizeof(state)); 1029 if (err) 1030 return err < 0 ? err : -EINVAL; 1031 1032 if (state.count > HPWMI_MAX_RFKILL2_DEVICES) { 1033 pr_warn("unable to parse 0x1b query output\n"); 1034 return -EINVAL; 1035 } 1036 1037 for (i = 0; i < state.count; i++) { 1038 struct rfkill *rfkill; 1039 enum rfkill_type type; 1040 char *name; 1041 1042 switch (state.device[i].radio_type) { 1043 case HPWMI_WIFI: 1044 type = RFKILL_TYPE_WLAN; 1045 name = "hp-wifi"; 1046 break; 1047 case HPWMI_BLUETOOTH: 1048 type = RFKILL_TYPE_BLUETOOTH; 1049 name = "hp-bluetooth"; 1050 break; 1051 case HPWMI_WWAN: 1052 type = RFKILL_TYPE_WWAN; 1053 name = "hp-wwan"; 1054 break; 1055 case HPWMI_GPS: 1056 type = RFKILL_TYPE_GPS; 1057 name = "hp-gps"; 1058 break; 1059 default: 1060 pr_warn("unknown device type 0x%x\n", 1061 state.device[i].radio_type); 1062 continue; 1063 } 1064 1065 if (!state.device[i].vendor_id) { 1066 pr_warn("zero device %d while %d reported\n", 1067 i, state.count); 1068 continue; 1069 } 1070 1071 rfkill = rfkill_alloc(name, &device->dev, type, 1072 &hp_wmi_rfkill2_ops, (void *)(long)i); 1073 if (!rfkill) { 1074 err = -ENOMEM; 1075 goto fail; 1076 } 1077 1078 rfkill2[rfkill2_count].id = state.device[i].rfkill_id; 1079 rfkill2[rfkill2_count].num = i; 1080 rfkill2[rfkill2_count].rfkill = rfkill; 1081 1082 rfkill_init_sw_state(rfkill, 1083 IS_SWBLOCKED(state.device[i].power)); 1084 rfkill_set_hw_state(rfkill, 1085 IS_HWBLOCKED(state.device[i].power)); 1086 1087 if (!(state.device[i].power & HPWMI_POWER_BIOS)) 1088 pr_info("device %s blocked by BIOS\n", name); 1089 1090 err = rfkill_register(rfkill); 1091 if (err) { 1092 rfkill_destroy(rfkill); 1093 goto fail; 1094 } 1095 1096 rfkill2_count++; 1097 } 1098 1099 return 0; 1100 fail: 1101 for (; rfkill2_count > 0; rfkill2_count--) { 1102 rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill); 1103 rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill); 1104 } 1105 return err; 1106 } 1107 1108 static int platform_profile_omen_get(struct platform_profile_handler *pprof, 1109 enum platform_profile_option *profile) 1110 { 1111 int tp; 1112 1113 tp = omen_thermal_profile_get(); 1114 if (tp < 0) 1115 return tp; 1116 1117 switch (tp) { 1118 case HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE: 1119 case HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE: 1120 *profile = PLATFORM_PROFILE_PERFORMANCE; 1121 break; 1122 case HP_OMEN_V0_THERMAL_PROFILE_DEFAULT: 1123 case HP_OMEN_V1_THERMAL_PROFILE_DEFAULT: 1124 *profile = PLATFORM_PROFILE_BALANCED; 1125 break; 1126 case HP_OMEN_V0_THERMAL_PROFILE_COOL: 1127 case HP_OMEN_V1_THERMAL_PROFILE_COOL: 1128 *profile = PLATFORM_PROFILE_COOL; 1129 break; 1130 default: 1131 return -EINVAL; 1132 } 1133 1134 return 0; 1135 } 1136 1137 static int platform_profile_omen_set(struct platform_profile_handler *pprof, 1138 enum platform_profile_option profile) 1139 { 1140 int err, tp, tp_version; 1141 1142 tp_version = omen_get_thermal_policy_version(); 1143 1144 if (tp_version < 0 || tp_version > 1) 1145 return -EOPNOTSUPP; 1146 1147 switch (profile) { 1148 case PLATFORM_PROFILE_PERFORMANCE: 1149 if (tp_version == 0) 1150 tp = HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE; 1151 else 1152 tp = HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE; 1153 break; 1154 case PLATFORM_PROFILE_BALANCED: 1155 if (tp_version == 0) 1156 tp = HP_OMEN_V0_THERMAL_PROFILE_DEFAULT; 1157 else 1158 tp = HP_OMEN_V1_THERMAL_PROFILE_DEFAULT; 1159 break; 1160 case PLATFORM_PROFILE_COOL: 1161 if (tp_version == 0) 1162 tp = HP_OMEN_V0_THERMAL_PROFILE_COOL; 1163 else 1164 tp = HP_OMEN_V1_THERMAL_PROFILE_COOL; 1165 break; 1166 default: 1167 return -EOPNOTSUPP; 1168 } 1169 1170 err = omen_thermal_profile_set(tp); 1171 if (err < 0) 1172 return err; 1173 1174 return 0; 1175 } 1176 1177 static int thermal_profile_get(void) 1178 { 1179 return hp_wmi_read_int(HPWMI_THERMAL_PROFILE_QUERY); 1180 } 1181 1182 static int thermal_profile_set(int thermal_profile) 1183 { 1184 return hp_wmi_perform_query(HPWMI_THERMAL_PROFILE_QUERY, HPWMI_WRITE, &thermal_profile, 1185 sizeof(thermal_profile), 0); 1186 } 1187 1188 static int hp_wmi_platform_profile_get(struct platform_profile_handler *pprof, 1189 enum platform_profile_option *profile) 1190 { 1191 int tp; 1192 1193 tp = thermal_profile_get(); 1194 if (tp < 0) 1195 return tp; 1196 1197 switch (tp) { 1198 case HP_THERMAL_PROFILE_PERFORMANCE: 1199 *profile = PLATFORM_PROFILE_PERFORMANCE; 1200 break; 1201 case HP_THERMAL_PROFILE_DEFAULT: 1202 *profile = PLATFORM_PROFILE_BALANCED; 1203 break; 1204 case HP_THERMAL_PROFILE_COOL: 1205 *profile = PLATFORM_PROFILE_COOL; 1206 break; 1207 case HP_THERMAL_PROFILE_QUIET: 1208 *profile = PLATFORM_PROFILE_QUIET; 1209 break; 1210 default: 1211 return -EINVAL; 1212 } 1213 1214 return 0; 1215 } 1216 1217 static int hp_wmi_platform_profile_set(struct platform_profile_handler *pprof, 1218 enum platform_profile_option profile) 1219 { 1220 int err, tp; 1221 1222 switch (profile) { 1223 case PLATFORM_PROFILE_PERFORMANCE: 1224 tp = HP_THERMAL_PROFILE_PERFORMANCE; 1225 break; 1226 case PLATFORM_PROFILE_BALANCED: 1227 tp = HP_THERMAL_PROFILE_DEFAULT; 1228 break; 1229 case PLATFORM_PROFILE_COOL: 1230 tp = HP_THERMAL_PROFILE_COOL; 1231 break; 1232 case PLATFORM_PROFILE_QUIET: 1233 tp = HP_THERMAL_PROFILE_QUIET; 1234 break; 1235 default: 1236 return -EOPNOTSUPP; 1237 } 1238 1239 err = thermal_profile_set(tp); 1240 if (err) 1241 return err; 1242 1243 return 0; 1244 } 1245 1246 static int thermal_profile_setup(void) 1247 { 1248 int err, tp; 1249 1250 if (is_omen_thermal_profile()) { 1251 tp = omen_thermal_profile_get(); 1252 if (tp < 0) 1253 return tp; 1254 1255 /* 1256 * call thermal profile write command to ensure that the 1257 * firmware correctly sets the OEM variables 1258 */ 1259 1260 err = omen_thermal_profile_set(tp); 1261 if (err < 0) 1262 return err; 1263 1264 platform_profile_handler.profile_get = platform_profile_omen_get; 1265 platform_profile_handler.profile_set = platform_profile_omen_set; 1266 } else { 1267 tp = thermal_profile_get(); 1268 1269 if (tp < 0) 1270 return tp; 1271 1272 /* 1273 * call thermal profile write command to ensure that the 1274 * firmware correctly sets the OEM variables for the DPTF 1275 */ 1276 err = thermal_profile_set(tp); 1277 if (err) 1278 return err; 1279 1280 platform_profile_handler.profile_get = hp_wmi_platform_profile_get; 1281 platform_profile_handler.profile_set = hp_wmi_platform_profile_set; 1282 1283 set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices); 1284 } 1285 1286 set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices); 1287 set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices); 1288 set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices); 1289 1290 err = platform_profile_register(&platform_profile_handler); 1291 if (err) 1292 return err; 1293 1294 platform_profile_support = true; 1295 1296 return 0; 1297 } 1298 1299 static int hp_wmi_hwmon_init(void); 1300 1301 static int __init hp_wmi_bios_setup(struct platform_device *device) 1302 { 1303 int err; 1304 /* clear detected rfkill devices */ 1305 wifi_rfkill = NULL; 1306 bluetooth_rfkill = NULL; 1307 wwan_rfkill = NULL; 1308 rfkill2_count = 0; 1309 1310 /* 1311 * In pre-2009 BIOS, command 1Bh return 0x4 to indicate that 1312 * BIOS no longer controls the power for the wireless 1313 * devices. All features supported by this command will no 1314 * longer be supported. 1315 */ 1316 if (!hp_wmi_bios_2009_later()) { 1317 if (hp_wmi_rfkill_setup(device)) 1318 hp_wmi_rfkill2_setup(device); 1319 } 1320 1321 err = hp_wmi_hwmon_init(); 1322 1323 if (err < 0) 1324 return err; 1325 1326 thermal_profile_setup(); 1327 1328 return 0; 1329 } 1330 1331 static int __exit hp_wmi_bios_remove(struct platform_device *device) 1332 { 1333 int i; 1334 1335 for (i = 0; i < rfkill2_count; i++) { 1336 rfkill_unregister(rfkill2[i].rfkill); 1337 rfkill_destroy(rfkill2[i].rfkill); 1338 } 1339 1340 if (wifi_rfkill) { 1341 rfkill_unregister(wifi_rfkill); 1342 rfkill_destroy(wifi_rfkill); 1343 } 1344 if (bluetooth_rfkill) { 1345 rfkill_unregister(bluetooth_rfkill); 1346 rfkill_destroy(bluetooth_rfkill); 1347 } 1348 if (wwan_rfkill) { 1349 rfkill_unregister(wwan_rfkill); 1350 rfkill_destroy(wwan_rfkill); 1351 } 1352 1353 if (platform_profile_support) 1354 platform_profile_remove(); 1355 1356 return 0; 1357 } 1358 1359 static int hp_wmi_resume_handler(struct device *device) 1360 { 1361 /* 1362 * Hardware state may have changed while suspended, so trigger 1363 * input events for the current state. As this is a switch, 1364 * the input layer will only actually pass it on if the state 1365 * changed. 1366 */ 1367 if (hp_wmi_input_dev) { 1368 if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit)) 1369 input_report_switch(hp_wmi_input_dev, SW_DOCK, 1370 hp_wmi_get_dock_state()); 1371 if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit)) 1372 input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, 1373 hp_wmi_get_tablet_mode()); 1374 input_sync(hp_wmi_input_dev); 1375 } 1376 1377 if (rfkill2_count) 1378 hp_wmi_rfkill2_refresh(); 1379 1380 if (wifi_rfkill) 1381 rfkill_set_states(wifi_rfkill, 1382 hp_wmi_get_sw_state(HPWMI_WIFI), 1383 hp_wmi_get_hw_state(HPWMI_WIFI)); 1384 if (bluetooth_rfkill) 1385 rfkill_set_states(bluetooth_rfkill, 1386 hp_wmi_get_sw_state(HPWMI_BLUETOOTH), 1387 hp_wmi_get_hw_state(HPWMI_BLUETOOTH)); 1388 if (wwan_rfkill) 1389 rfkill_set_states(wwan_rfkill, 1390 hp_wmi_get_sw_state(HPWMI_WWAN), 1391 hp_wmi_get_hw_state(HPWMI_WWAN)); 1392 1393 return 0; 1394 } 1395 1396 static const struct dev_pm_ops hp_wmi_pm_ops = { 1397 .resume = hp_wmi_resume_handler, 1398 .restore = hp_wmi_resume_handler, 1399 }; 1400 1401 static struct platform_driver hp_wmi_driver = { 1402 .driver = { 1403 .name = "hp-wmi", 1404 .pm = &hp_wmi_pm_ops, 1405 .dev_groups = hp_wmi_groups, 1406 }, 1407 .remove = __exit_p(hp_wmi_bios_remove), 1408 }; 1409 1410 static umode_t hp_wmi_hwmon_is_visible(const void *data, 1411 enum hwmon_sensor_types type, 1412 u32 attr, int channel) 1413 { 1414 switch (type) { 1415 case hwmon_pwm: 1416 return 0644; 1417 case hwmon_fan: 1418 if (hp_wmi_get_fan_speed(channel) >= 0) 1419 return 0444; 1420 break; 1421 default: 1422 return 0; 1423 } 1424 1425 return 0; 1426 } 1427 1428 static int hp_wmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type, 1429 u32 attr, int channel, long *val) 1430 { 1431 int ret; 1432 1433 switch (type) { 1434 case hwmon_fan: 1435 ret = hp_wmi_get_fan_speed(channel); 1436 1437 if (ret < 0) 1438 return ret; 1439 *val = ret; 1440 return 0; 1441 case hwmon_pwm: 1442 switch (hp_wmi_fan_speed_max_get()) { 1443 case 0: 1444 /* 0 is automatic fan, which is 2 for hwmon */ 1445 *val = 2; 1446 return 0; 1447 case 1: 1448 /* 1 is max fan, which is 0 1449 * (no fan speed control) for hwmon 1450 */ 1451 *val = 0; 1452 return 0; 1453 default: 1454 /* shouldn't happen */ 1455 return -ENODATA; 1456 } 1457 default: 1458 return -EINVAL; 1459 } 1460 } 1461 1462 static int hp_wmi_hwmon_write(struct device *dev, enum hwmon_sensor_types type, 1463 u32 attr, int channel, long val) 1464 { 1465 switch (type) { 1466 case hwmon_pwm: 1467 switch (val) { 1468 case 0: 1469 /* 0 is no fan speed control (max), which is 1 for us */ 1470 return hp_wmi_fan_speed_max_set(1); 1471 case 2: 1472 /* 2 is automatic speed control, which is 0 for us */ 1473 return hp_wmi_fan_speed_max_set(0); 1474 default: 1475 /* we don't support manual fan speed control */ 1476 return -EINVAL; 1477 } 1478 default: 1479 return -EOPNOTSUPP; 1480 } 1481 } 1482 1483 static const struct hwmon_channel_info *info[] = { 1484 HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT, HWMON_F_INPUT), 1485 HWMON_CHANNEL_INFO(pwm, HWMON_PWM_ENABLE), 1486 NULL 1487 }; 1488 1489 static const struct hwmon_ops ops = { 1490 .is_visible = hp_wmi_hwmon_is_visible, 1491 .read = hp_wmi_hwmon_read, 1492 .write = hp_wmi_hwmon_write, 1493 }; 1494 1495 static const struct hwmon_chip_info chip_info = { 1496 .ops = &ops, 1497 .info = info, 1498 }; 1499 1500 static int hp_wmi_hwmon_init(void) 1501 { 1502 struct device *dev = &hp_wmi_platform_dev->dev; 1503 struct device *hwmon; 1504 1505 hwmon = devm_hwmon_device_register_with_info(dev, "hp", &hp_wmi_driver, 1506 &chip_info, NULL); 1507 1508 if (IS_ERR(hwmon)) { 1509 dev_err(dev, "Could not register hp hwmon device\n"); 1510 return PTR_ERR(hwmon); 1511 } 1512 1513 return 0; 1514 } 1515 1516 static int __init hp_wmi_init(void) 1517 { 1518 int event_capable = wmi_has_guid(HPWMI_EVENT_GUID); 1519 int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID); 1520 int err, tmp = 0; 1521 1522 if (!bios_capable && !event_capable) 1523 return -ENODEV; 1524 1525 if (hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, HPWMI_READ, &tmp, 1526 sizeof(tmp), sizeof(tmp)) == HPWMI_RET_INVALID_PARAMETERS) 1527 zero_insize_support = true; 1528 1529 if (event_capable) { 1530 err = hp_wmi_input_setup(); 1531 if (err) 1532 return err; 1533 } 1534 1535 if (bios_capable) { 1536 hp_wmi_platform_dev = 1537 platform_device_register_simple("hp-wmi", PLATFORM_DEVID_NONE, NULL, 0); 1538 if (IS_ERR(hp_wmi_platform_dev)) { 1539 err = PTR_ERR(hp_wmi_platform_dev); 1540 goto err_destroy_input; 1541 } 1542 1543 err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup); 1544 if (err) 1545 goto err_unregister_device; 1546 } 1547 1548 return 0; 1549 1550 err_unregister_device: 1551 platform_device_unregister(hp_wmi_platform_dev); 1552 err_destroy_input: 1553 if (event_capable) 1554 hp_wmi_input_destroy(); 1555 1556 return err; 1557 } 1558 module_init(hp_wmi_init); 1559 1560 static void __exit hp_wmi_exit(void) 1561 { 1562 if (wmi_has_guid(HPWMI_EVENT_GUID)) 1563 hp_wmi_input_destroy(); 1564 1565 if (hp_wmi_platform_dev) { 1566 platform_device_unregister(hp_wmi_platform_dev); 1567 platform_driver_unregister(&hp_wmi_driver); 1568 } 1569 } 1570 module_exit(hp_wmi_exit); 1571