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