acer-wmi.c revision 3c33be0b0dae390557f41a604ac621d0f3eabf9b
1/* 2 * Acer WMI Laptop Extras 3 * 4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk> 5 * 6 * Based on acer_acpi: 7 * Copyright (C) 2005-2007 E.M. Smith 8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 26 27#include <linux/kernel.h> 28#include <linux/module.h> 29#include <linux/init.h> 30#include <linux/types.h> 31#include <linux/dmi.h> 32#include <linux/fb.h> 33#include <linux/backlight.h> 34#include <linux/leds.h> 35#include <linux/platform_device.h> 36#include <linux/acpi.h> 37#include <linux/i8042.h> 38#include <linux/rfkill.h> 39#include <linux/workqueue.h> 40#include <linux/debugfs.h> 41#include <linux/slab.h> 42#include <linux/input.h> 43#include <linux/input/sparse-keymap.h> 44 45#include <acpi/acpi_drivers.h> 46#include <acpi/video.h> 47 48MODULE_AUTHOR("Carlos Corbacho"); 49MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); 50MODULE_LICENSE("GPL"); 51 52/* 53 * Magic Number 54 * Meaning is unknown - this number is required for writing to ACPI for AMW0 55 * (it's also used in acerhk when directly accessing the BIOS) 56 */ 57#define ACER_AMW0_WRITE 0x9610 58 59/* 60 * Bit masks for the AMW0 interface 61 */ 62#define ACER_AMW0_WIRELESS_MASK 0x35 63#define ACER_AMW0_BLUETOOTH_MASK 0x34 64#define ACER_AMW0_MAILLED_MASK 0x31 65 66/* 67 * Method IDs for WMID interface 68 */ 69#define ACER_WMID_GET_WIRELESS_METHODID 1 70#define ACER_WMID_GET_BLUETOOTH_METHODID 2 71#define ACER_WMID_GET_BRIGHTNESS_METHODID 3 72#define ACER_WMID_SET_WIRELESS_METHODID 4 73#define ACER_WMID_SET_BLUETOOTH_METHODID 5 74#define ACER_WMID_SET_BRIGHTNESS_METHODID 6 75#define ACER_WMID_GET_THREEG_METHODID 10 76#define ACER_WMID_SET_THREEG_METHODID 11 77 78/* 79 * Acer ACPI method GUIDs 80 */ 81#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" 82#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" 83#define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3" 84#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A" 85#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" 86 87/* 88 * Acer ACPI event GUIDs 89 */ 90#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" 91 92MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); 93MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"); 94MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 95 96enum acer_wmi_event_ids { 97 WMID_HOTKEY_EVENT = 0x1, 98}; 99 100static const struct key_entry acer_wmi_keymap[] = { 101 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ 102 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */ 103 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */ 104 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ 105 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ 106 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ 107 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ 108 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ 109 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */ 110 {KE_IGNORE, 0x41, {KEY_MUTE} }, 111 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} }, 112 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} }, 113 {KE_IGNORE, 0x43, {KEY_NEXTSONG} }, 114 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} }, 115 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} }, 116 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} }, 117 {KE_IGNORE, 0x45, {KEY_STOP} }, 118 {KE_IGNORE, 0x50, {KEY_STOP} }, 119 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} }, 120 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} }, 121 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} }, 122 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} }, 123 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} }, 124 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} }, 125 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 126 {KE_IGNORE, 0x81, {KEY_SLEEP} }, 127 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */ 128 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} }, 129 {KE_END, 0} 130}; 131 132static struct input_dev *acer_wmi_input_dev; 133 134struct event_return_value { 135 u8 function; 136 u8 key_num; 137 u16 device_state; 138 u32 reserved; 139} __attribute__((packed)); 140 141/* 142 * GUID3 Get Device Status device flags 143 */ 144#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 145#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 146#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */ 147#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 148 149struct lm_input_params { 150 u8 function_num; /* Function Number */ 151 u16 commun_devices; /* Communication type devices default status */ 152 u16 devices; /* Other type devices default status */ 153 u8 lm_status; /* Launch Manager Status */ 154 u16 reserved; 155} __attribute__((packed)); 156 157struct lm_return_value { 158 u8 error_code; /* Error Code */ 159 u8 ec_return_value; /* EC Return Value */ 160 u16 reserved; 161} __attribute__((packed)); 162 163struct wmid3_gds_set_input_param { /* Set Device Status input parameter */ 164 u8 function_num; /* Function Number */ 165 u8 hotkey_number; /* Hotkey Number */ 166 u16 devices; /* Set Device */ 167 u8 volume_value; /* Volume Value */ 168} __attribute__((packed)); 169 170struct wmid3_gds_get_input_param { /* Get Device Status input parameter */ 171 u8 function_num; /* Function Number */ 172 u8 hotkey_number; /* Hotkey Number */ 173 u16 devices; /* Get Device */ 174} __attribute__((packed)); 175 176struct wmid3_gds_return_value { /* Get Device Status return value*/ 177 u8 error_code; /* Error Code */ 178 u8 ec_return_value; /* EC Return Value */ 179 u16 devices; /* Current Device Status */ 180 u32 reserved; 181} __attribute__((packed)); 182 183struct hotkey_function_type_aa { 184 u8 type; 185 u8 length; 186 u16 handle; 187 u16 commun_func_bitmap; 188 u16 application_func_bitmap; 189 u16 media_func_bitmap; 190 u16 display_func_bitmap; 191 u16 others_func_bitmap; 192 u8 commun_fn_key_number; 193} __attribute__((packed)); 194 195/* 196 * Interface capability flags 197 */ 198#define ACER_CAP_MAILLED (1<<0) 199#define ACER_CAP_WIRELESS (1<<1) 200#define ACER_CAP_BLUETOOTH (1<<2) 201#define ACER_CAP_BRIGHTNESS (1<<3) 202#define ACER_CAP_THREEG (1<<4) 203#define ACER_CAP_ANY (0xFFFFFFFF) 204 205/* 206 * Interface type flags 207 */ 208enum interface_flags { 209 ACER_AMW0, 210 ACER_AMW0_V2, 211 ACER_WMID, 212 ACER_WMID_v2, 213}; 214 215#define ACER_DEFAULT_WIRELESS 0 216#define ACER_DEFAULT_BLUETOOTH 0 217#define ACER_DEFAULT_MAILLED 0 218#define ACER_DEFAULT_THREEG 0 219 220static int max_brightness = 0xF; 221 222static int mailled = -1; 223static int brightness = -1; 224static int threeg = -1; 225static int force_series; 226static bool ec_raw_mode; 227static bool has_type_aa; 228static u16 commun_func_bitmap; 229static u8 commun_fn_key_number; 230 231module_param(mailled, int, 0444); 232module_param(brightness, int, 0444); 233module_param(threeg, int, 0444); 234module_param(force_series, int, 0444); 235module_param(ec_raw_mode, bool, 0444); 236MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 237MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 238MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 239MODULE_PARM_DESC(force_series, "Force a different laptop series"); 240MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 241 242struct acer_data { 243 int mailled; 244 int threeg; 245 int brightness; 246}; 247 248struct acer_debug { 249 struct dentry *root; 250 struct dentry *devices; 251 u32 wmid_devices; 252}; 253 254static struct rfkill *wireless_rfkill; 255static struct rfkill *bluetooth_rfkill; 256static struct rfkill *threeg_rfkill; 257static bool rfkill_inited; 258 259/* Each low-level interface must define at least some of the following */ 260struct wmi_interface { 261 /* The WMI device type */ 262 u32 type; 263 264 /* The capabilities this interface provides */ 265 u32 capability; 266 267 /* Private data for the current interface */ 268 struct acer_data data; 269 270 /* debugfs entries associated with this interface */ 271 struct acer_debug debug; 272}; 273 274/* The static interface pointer, points to the currently detected interface */ 275static struct wmi_interface *interface; 276 277/* 278 * Embedded Controller quirks 279 * Some laptops require us to directly access the EC to either enable or query 280 * features that are not available through WMI. 281 */ 282 283struct quirk_entry { 284 u8 wireless; 285 u8 mailled; 286 s8 brightness; 287 u8 bluetooth; 288}; 289 290static struct quirk_entry *quirks; 291 292static void set_quirks(void) 293{ 294 if (!interface) 295 return; 296 297 if (quirks->mailled) 298 interface->capability |= ACER_CAP_MAILLED; 299 300 if (quirks->brightness) 301 interface->capability |= ACER_CAP_BRIGHTNESS; 302} 303 304static int dmi_matched(const struct dmi_system_id *dmi) 305{ 306 quirks = dmi->driver_data; 307 return 1; 308} 309 310static struct quirk_entry quirk_unknown = { 311}; 312 313static struct quirk_entry quirk_acer_aspire_1520 = { 314 .brightness = -1, 315}; 316 317static struct quirk_entry quirk_acer_travelmate_2490 = { 318 .mailled = 1, 319}; 320 321/* This AMW0 laptop has no bluetooth */ 322static struct quirk_entry quirk_medion_md_98300 = { 323 .wireless = 1, 324}; 325 326static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 327 .wireless = 2, 328}; 329 330static struct quirk_entry quirk_lenovo_ideapad_s205 = { 331 .wireless = 3, 332}; 333 334/* The Aspire One has a dummy ACPI-WMI interface - disable it */ 335static struct dmi_system_id __devinitdata acer_blacklist[] = { 336 { 337 .ident = "Acer Aspire One (SSD)", 338 .matches = { 339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 340 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 341 }, 342 }, 343 { 344 .ident = "Acer Aspire One (HDD)", 345 .matches = { 346 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 347 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 348 }, 349 }, 350 {} 351}; 352 353static struct dmi_system_id acer_quirks[] = { 354 { 355 .callback = dmi_matched, 356 .ident = "Acer Aspire 1360", 357 .matches = { 358 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 359 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 360 }, 361 .driver_data = &quirk_acer_aspire_1520, 362 }, 363 { 364 .callback = dmi_matched, 365 .ident = "Acer Aspire 1520", 366 .matches = { 367 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 368 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 369 }, 370 .driver_data = &quirk_acer_aspire_1520, 371 }, 372 { 373 .callback = dmi_matched, 374 .ident = "Acer Aspire 3100", 375 .matches = { 376 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 377 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 378 }, 379 .driver_data = &quirk_acer_travelmate_2490, 380 }, 381 { 382 .callback = dmi_matched, 383 .ident = "Acer Aspire 3610", 384 .matches = { 385 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 386 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 387 }, 388 .driver_data = &quirk_acer_travelmate_2490, 389 }, 390 { 391 .callback = dmi_matched, 392 .ident = "Acer Aspire 5100", 393 .matches = { 394 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 395 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 396 }, 397 .driver_data = &quirk_acer_travelmate_2490, 398 }, 399 { 400 .callback = dmi_matched, 401 .ident = "Acer Aspire 5610", 402 .matches = { 403 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 404 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 405 }, 406 .driver_data = &quirk_acer_travelmate_2490, 407 }, 408 { 409 .callback = dmi_matched, 410 .ident = "Acer Aspire 5630", 411 .matches = { 412 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 413 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 414 }, 415 .driver_data = &quirk_acer_travelmate_2490, 416 }, 417 { 418 .callback = dmi_matched, 419 .ident = "Acer Aspire 5650", 420 .matches = { 421 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 422 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 423 }, 424 .driver_data = &quirk_acer_travelmate_2490, 425 }, 426 { 427 .callback = dmi_matched, 428 .ident = "Acer Aspire 5680", 429 .matches = { 430 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 431 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 432 }, 433 .driver_data = &quirk_acer_travelmate_2490, 434 }, 435 { 436 .callback = dmi_matched, 437 .ident = "Acer Aspire 9110", 438 .matches = { 439 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 440 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 441 }, 442 .driver_data = &quirk_acer_travelmate_2490, 443 }, 444 { 445 .callback = dmi_matched, 446 .ident = "Acer TravelMate 2490", 447 .matches = { 448 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 449 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 450 }, 451 .driver_data = &quirk_acer_travelmate_2490, 452 }, 453 { 454 .callback = dmi_matched, 455 .ident = "Acer TravelMate 4200", 456 .matches = { 457 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 458 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 459 }, 460 .driver_data = &quirk_acer_travelmate_2490, 461 }, 462 { 463 .callback = dmi_matched, 464 .ident = "Fujitsu Siemens Amilo Li 1718", 465 .matches = { 466 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 467 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 468 }, 469 .driver_data = &quirk_fujitsu_amilo_li_1718, 470 }, 471 { 472 .callback = dmi_matched, 473 .ident = "Medion MD 98300", 474 .matches = { 475 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 476 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 477 }, 478 .driver_data = &quirk_medion_md_98300, 479 }, 480 { 481 .callback = dmi_matched, 482 .ident = "Lenovo Ideapad S205", 483 .matches = { 484 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 485 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"), 486 }, 487 .driver_data = &quirk_lenovo_ideapad_s205, 488 }, 489 { 490 .callback = dmi_matched, 491 .ident = "Lenovo Ideapad S205 (Brazos)", 492 .matches = { 493 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 494 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"), 495 }, 496 .driver_data = &quirk_lenovo_ideapad_s205, 497 }, 498 { 499 .callback = dmi_matched, 500 .ident = "Lenovo 3000 N200", 501 .matches = { 502 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 503 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"), 504 }, 505 .driver_data = &quirk_fujitsu_amilo_li_1718, 506 }, 507 {} 508}; 509 510static int video_set_backlight_video_vendor(const struct dmi_system_id *d) 511{ 512 interface->capability &= ~ACER_CAP_BRIGHTNESS; 513 pr_info("Brightness must be controlled by generic video driver\n"); 514 return 0; 515} 516 517static const struct dmi_system_id video_vendor_dmi_table[] = { 518 { 519 .callback = video_set_backlight_video_vendor, 520 .ident = "Acer TravelMate 4750", 521 .matches = { 522 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 523 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"), 524 }, 525 }, 526 { 527 .callback = video_set_backlight_video_vendor, 528 .ident = "Acer Extensa 5235", 529 .matches = { 530 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 531 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"), 532 }, 533 }, 534 { 535 .callback = video_set_backlight_video_vendor, 536 .ident = "Acer TravelMate 5760", 537 .matches = { 538 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 539 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"), 540 }, 541 }, 542 { 543 .callback = video_set_backlight_video_vendor, 544 .ident = "Acer Aspire 5750", 545 .matches = { 546 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 547 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"), 548 }, 549 }, 550 {} 551}; 552 553/* Find which quirks are needed for a particular vendor/ model pair */ 554static void find_quirks(void) 555{ 556 if (!force_series) { 557 dmi_check_system(acer_quirks); 558 } else if (force_series == 2490) { 559 quirks = &quirk_acer_travelmate_2490; 560 } 561 562 if (quirks == NULL) 563 quirks = &quirk_unknown; 564 565 set_quirks(); 566} 567 568/* 569 * General interface convenience methods 570 */ 571 572static bool has_cap(u32 cap) 573{ 574 if ((interface->capability & cap) != 0) 575 return 1; 576 577 return 0; 578} 579 580/* 581 * AMW0 (V1) interface 582 */ 583struct wmab_args { 584 u32 eax; 585 u32 ebx; 586 u32 ecx; 587 u32 edx; 588}; 589 590struct wmab_ret { 591 u32 eax; 592 u32 ebx; 593 u32 ecx; 594 u32 edx; 595 u32 eex; 596}; 597 598static acpi_status wmab_execute(struct wmab_args *regbuf, 599struct acpi_buffer *result) 600{ 601 struct acpi_buffer input; 602 acpi_status status; 603 input.length = sizeof(struct wmab_args); 604 input.pointer = (u8 *)regbuf; 605 606 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 607 608 return status; 609} 610 611static acpi_status AMW0_get_u32(u32 *value, u32 cap) 612{ 613 int err; 614 u8 result; 615 616 switch (cap) { 617 case ACER_CAP_MAILLED: 618 switch (quirks->mailled) { 619 default: 620 err = ec_read(0xA, &result); 621 if (err) 622 return AE_ERROR; 623 *value = (result >> 7) & 0x1; 624 return AE_OK; 625 } 626 break; 627 case ACER_CAP_WIRELESS: 628 switch (quirks->wireless) { 629 case 1: 630 err = ec_read(0x7B, &result); 631 if (err) 632 return AE_ERROR; 633 *value = result & 0x1; 634 return AE_OK; 635 case 2: 636 err = ec_read(0x71, &result); 637 if (err) 638 return AE_ERROR; 639 *value = result & 0x1; 640 return AE_OK; 641 case 3: 642 err = ec_read(0x78, &result); 643 if (err) 644 return AE_ERROR; 645 *value = result & 0x1; 646 return AE_OK; 647 default: 648 err = ec_read(0xA, &result); 649 if (err) 650 return AE_ERROR; 651 *value = (result >> 2) & 0x1; 652 return AE_OK; 653 } 654 break; 655 case ACER_CAP_BLUETOOTH: 656 switch (quirks->bluetooth) { 657 default: 658 err = ec_read(0xA, &result); 659 if (err) 660 return AE_ERROR; 661 *value = (result >> 4) & 0x1; 662 return AE_OK; 663 } 664 break; 665 case ACER_CAP_BRIGHTNESS: 666 switch (quirks->brightness) { 667 default: 668 err = ec_read(0x83, &result); 669 if (err) 670 return AE_ERROR; 671 *value = result; 672 return AE_OK; 673 } 674 break; 675 default: 676 return AE_ERROR; 677 } 678 return AE_OK; 679} 680 681static acpi_status AMW0_set_u32(u32 value, u32 cap) 682{ 683 struct wmab_args args; 684 685 args.eax = ACER_AMW0_WRITE; 686 args.ebx = value ? (1<<8) : 0; 687 args.ecx = args.edx = 0; 688 689 switch (cap) { 690 case ACER_CAP_MAILLED: 691 if (value > 1) 692 return AE_BAD_PARAMETER; 693 args.ebx |= ACER_AMW0_MAILLED_MASK; 694 break; 695 case ACER_CAP_WIRELESS: 696 if (value > 1) 697 return AE_BAD_PARAMETER; 698 args.ebx |= ACER_AMW0_WIRELESS_MASK; 699 break; 700 case ACER_CAP_BLUETOOTH: 701 if (value > 1) 702 return AE_BAD_PARAMETER; 703 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 704 break; 705 case ACER_CAP_BRIGHTNESS: 706 if (value > max_brightness) 707 return AE_BAD_PARAMETER; 708 switch (quirks->brightness) { 709 default: 710 return ec_write(0x83, value); 711 break; 712 } 713 default: 714 return AE_ERROR; 715 } 716 717 /* Actually do the set */ 718 return wmab_execute(&args, NULL); 719} 720 721static acpi_status AMW0_find_mailled(void) 722{ 723 struct wmab_args args; 724 struct wmab_ret ret; 725 acpi_status status = AE_OK; 726 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 727 union acpi_object *obj; 728 729 args.eax = 0x86; 730 args.ebx = args.ecx = args.edx = 0; 731 732 status = wmab_execute(&args, &out); 733 if (ACPI_FAILURE(status)) 734 return status; 735 736 obj = (union acpi_object *) out.pointer; 737 if (obj && obj->type == ACPI_TYPE_BUFFER && 738 obj->buffer.length == sizeof(struct wmab_ret)) { 739 ret = *((struct wmab_ret *) obj->buffer.pointer); 740 } else { 741 kfree(out.pointer); 742 return AE_ERROR; 743 } 744 745 if (ret.eex & 0x1) 746 interface->capability |= ACER_CAP_MAILLED; 747 748 kfree(out.pointer); 749 750 return AE_OK; 751} 752 753static int AMW0_set_cap_acpi_check_device_found; 754 755static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle, 756 u32 level, void *context, void **retval) 757{ 758 AMW0_set_cap_acpi_check_device_found = 1; 759 return AE_OK; 760} 761 762static const struct acpi_device_id norfkill_ids[] = { 763 { "VPC2004", 0}, 764 { "IBM0068", 0}, 765 { "LEN0068", 0}, 766 { "SNY5001", 0}, /* sony-laptop in charge */ 767 { "", 0}, 768}; 769 770static int AMW0_set_cap_acpi_check_device(void) 771{ 772 const struct acpi_device_id *id; 773 774 for (id = norfkill_ids; id->id[0]; id++) 775 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb, 776 NULL, NULL); 777 return AMW0_set_cap_acpi_check_device_found; 778} 779 780static acpi_status AMW0_set_capabilities(void) 781{ 782 struct wmab_args args; 783 struct wmab_ret ret; 784 acpi_status status; 785 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 786 union acpi_object *obj; 787 788 /* 789 * On laptops with this strange GUID (non Acer), normal probing doesn't 790 * work. 791 */ 792 if (wmi_has_guid(AMW0_GUID2)) { 793 if ((quirks != &quirk_unknown) || 794 !AMW0_set_cap_acpi_check_device()) 795 interface->capability |= ACER_CAP_WIRELESS; 796 return AE_OK; 797 } 798 799 args.eax = ACER_AMW0_WRITE; 800 args.ecx = args.edx = 0; 801 802 args.ebx = 0xa2 << 8; 803 args.ebx |= ACER_AMW0_WIRELESS_MASK; 804 805 status = wmab_execute(&args, &out); 806 if (ACPI_FAILURE(status)) 807 return status; 808 809 obj = out.pointer; 810 if (obj && obj->type == ACPI_TYPE_BUFFER && 811 obj->buffer.length == sizeof(struct wmab_ret)) { 812 ret = *((struct wmab_ret *) obj->buffer.pointer); 813 } else { 814 status = AE_ERROR; 815 goto out; 816 } 817 818 if (ret.eax & 0x1) 819 interface->capability |= ACER_CAP_WIRELESS; 820 821 args.ebx = 2 << 8; 822 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 823 824 /* 825 * It's ok to use existing buffer for next wmab_execute call. 826 * But we need to kfree(out.pointer) if next wmab_execute fail. 827 */ 828 status = wmab_execute(&args, &out); 829 if (ACPI_FAILURE(status)) 830 goto out; 831 832 obj = (union acpi_object *) out.pointer; 833 if (obj && obj->type == ACPI_TYPE_BUFFER 834 && obj->buffer.length == sizeof(struct wmab_ret)) { 835 ret = *((struct wmab_ret *) obj->buffer.pointer); 836 } else { 837 status = AE_ERROR; 838 goto out; 839 } 840 841 if (ret.eax & 0x1) 842 interface->capability |= ACER_CAP_BLUETOOTH; 843 844 /* 845 * This appears to be safe to enable, since all Wistron based laptops 846 * appear to use the same EC register for brightness, even if they 847 * differ for wireless, etc 848 */ 849 if (quirks->brightness >= 0) 850 interface->capability |= ACER_CAP_BRIGHTNESS; 851 852 status = AE_OK; 853out: 854 kfree(out.pointer); 855 return status; 856} 857 858static struct wmi_interface AMW0_interface = { 859 .type = ACER_AMW0, 860}; 861 862static struct wmi_interface AMW0_V2_interface = { 863 .type = ACER_AMW0_V2, 864}; 865 866/* 867 * New interface (The WMID interface) 868 */ 869static acpi_status 870WMI_execute_u32(u32 method_id, u32 in, u32 *out) 871{ 872 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 873 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 874 union acpi_object *obj; 875 u32 tmp; 876 acpi_status status; 877 878 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 879 880 if (ACPI_FAILURE(status)) 881 return status; 882 883 obj = (union acpi_object *) result.pointer; 884 if (obj && obj->type == ACPI_TYPE_BUFFER && 885 (obj->buffer.length == sizeof(u32) || 886 obj->buffer.length == sizeof(u64))) { 887 tmp = *((u32 *) obj->buffer.pointer); 888 } else if (obj->type == ACPI_TYPE_INTEGER) { 889 tmp = (u32) obj->integer.value; 890 } else { 891 tmp = 0; 892 } 893 894 if (out) 895 *out = tmp; 896 897 kfree(result.pointer); 898 899 return status; 900} 901 902static acpi_status WMID_get_u32(u32 *value, u32 cap) 903{ 904 acpi_status status; 905 u8 tmp; 906 u32 result, method_id = 0; 907 908 switch (cap) { 909 case ACER_CAP_WIRELESS: 910 method_id = ACER_WMID_GET_WIRELESS_METHODID; 911 break; 912 case ACER_CAP_BLUETOOTH: 913 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 914 break; 915 case ACER_CAP_BRIGHTNESS: 916 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 917 break; 918 case ACER_CAP_THREEG: 919 method_id = ACER_WMID_GET_THREEG_METHODID; 920 break; 921 case ACER_CAP_MAILLED: 922 if (quirks->mailled == 1) { 923 ec_read(0x9f, &tmp); 924 *value = tmp & 0x1; 925 return 0; 926 } 927 default: 928 return AE_ERROR; 929 } 930 status = WMI_execute_u32(method_id, 0, &result); 931 932 if (ACPI_SUCCESS(status)) 933 *value = (u8)result; 934 935 return status; 936} 937 938static acpi_status WMID_set_u32(u32 value, u32 cap) 939{ 940 u32 method_id = 0; 941 char param; 942 943 switch (cap) { 944 case ACER_CAP_BRIGHTNESS: 945 if (value > max_brightness) 946 return AE_BAD_PARAMETER; 947 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 948 break; 949 case ACER_CAP_WIRELESS: 950 if (value > 1) 951 return AE_BAD_PARAMETER; 952 method_id = ACER_WMID_SET_WIRELESS_METHODID; 953 break; 954 case ACER_CAP_BLUETOOTH: 955 if (value > 1) 956 return AE_BAD_PARAMETER; 957 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 958 break; 959 case ACER_CAP_THREEG: 960 if (value > 1) 961 return AE_BAD_PARAMETER; 962 method_id = ACER_WMID_SET_THREEG_METHODID; 963 break; 964 case ACER_CAP_MAILLED: 965 if (value > 1) 966 return AE_BAD_PARAMETER; 967 if (quirks->mailled == 1) { 968 param = value ? 0x92 : 0x93; 969 i8042_lock_chip(); 970 i8042_command(¶m, 0x1059); 971 i8042_unlock_chip(); 972 return 0; 973 } 974 break; 975 default: 976 return AE_ERROR; 977 } 978 return WMI_execute_u32(method_id, (u32)value, NULL); 979} 980 981static acpi_status wmid3_get_device_status(u32 *value, u16 device) 982{ 983 struct wmid3_gds_return_value return_value; 984 acpi_status status; 985 union acpi_object *obj; 986 struct wmid3_gds_get_input_param params = { 987 .function_num = 0x1, 988 .hotkey_number = commun_fn_key_number, 989 .devices = device, 990 }; 991 struct acpi_buffer input = { 992 sizeof(struct wmid3_gds_get_input_param), 993 ¶ms 994 }; 995 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 996 997 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 998 if (ACPI_FAILURE(status)) 999 return status; 1000 1001 obj = output.pointer; 1002 1003 if (!obj) 1004 return AE_ERROR; 1005 else if (obj->type != ACPI_TYPE_BUFFER) { 1006 kfree(obj); 1007 return AE_ERROR; 1008 } 1009 if (obj->buffer.length != 8) { 1010 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1011 kfree(obj); 1012 return AE_ERROR; 1013 } 1014 1015 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1016 kfree(obj); 1017 1018 if (return_value.error_code || return_value.ec_return_value) 1019 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n", 1020 device, 1021 return_value.error_code, 1022 return_value.ec_return_value); 1023 else 1024 *value = !!(return_value.devices & device); 1025 1026 return status; 1027} 1028 1029static acpi_status wmid_v2_get_u32(u32 *value, u32 cap) 1030{ 1031 u16 device; 1032 1033 switch (cap) { 1034 case ACER_CAP_WIRELESS: 1035 device = ACER_WMID3_GDS_WIRELESS; 1036 break; 1037 case ACER_CAP_BLUETOOTH: 1038 device = ACER_WMID3_GDS_BLUETOOTH; 1039 break; 1040 case ACER_CAP_THREEG: 1041 device = ACER_WMID3_GDS_THREEG; 1042 break; 1043 default: 1044 return AE_ERROR; 1045 } 1046 return wmid3_get_device_status(value, device); 1047} 1048 1049static acpi_status wmid3_set_device_status(u32 value, u16 device) 1050{ 1051 struct wmid3_gds_return_value return_value; 1052 acpi_status status; 1053 union acpi_object *obj; 1054 u16 devices; 1055 struct wmid3_gds_get_input_param get_params = { 1056 .function_num = 0x1, 1057 .hotkey_number = commun_fn_key_number, 1058 .devices = commun_func_bitmap, 1059 }; 1060 struct acpi_buffer get_input = { 1061 sizeof(struct wmid3_gds_get_input_param), 1062 &get_params 1063 }; 1064 struct wmid3_gds_set_input_param set_params = { 1065 .function_num = 0x2, 1066 .hotkey_number = commun_fn_key_number, 1067 .devices = commun_func_bitmap, 1068 }; 1069 struct acpi_buffer set_input = { 1070 sizeof(struct wmid3_gds_set_input_param), 1071 &set_params 1072 }; 1073 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1074 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL }; 1075 1076 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output); 1077 if (ACPI_FAILURE(status)) 1078 return status; 1079 1080 obj = output.pointer; 1081 1082 if (!obj) 1083 return AE_ERROR; 1084 else if (obj->type != ACPI_TYPE_BUFFER) { 1085 kfree(obj); 1086 return AE_ERROR; 1087 } 1088 if (obj->buffer.length != 8) { 1089 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1090 kfree(obj); 1091 return AE_ERROR; 1092 } 1093 1094 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1095 kfree(obj); 1096 1097 if (return_value.error_code || return_value.ec_return_value) { 1098 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n", 1099 return_value.error_code, 1100 return_value.ec_return_value); 1101 return status; 1102 } 1103 1104 devices = return_value.devices; 1105 set_params.devices = (value) ? (devices | device) : (devices & ~device); 1106 1107 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2); 1108 if (ACPI_FAILURE(status)) 1109 return status; 1110 1111 obj = output2.pointer; 1112 1113 if (!obj) 1114 return AE_ERROR; 1115 else if (obj->type != ACPI_TYPE_BUFFER) { 1116 kfree(obj); 1117 return AE_ERROR; 1118 } 1119 if (obj->buffer.length != 4) { 1120 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1121 kfree(obj); 1122 return AE_ERROR; 1123 } 1124 1125 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1126 kfree(obj); 1127 1128 if (return_value.error_code || return_value.ec_return_value) 1129 pr_warn("Set Device Status failed: 0x%x - 0x%x\n", 1130 return_value.error_code, 1131 return_value.ec_return_value); 1132 1133 return status; 1134} 1135 1136static acpi_status wmid_v2_set_u32(u32 value, u32 cap) 1137{ 1138 u16 device; 1139 1140 switch (cap) { 1141 case ACER_CAP_WIRELESS: 1142 device = ACER_WMID3_GDS_WIRELESS; 1143 break; 1144 case ACER_CAP_BLUETOOTH: 1145 device = ACER_WMID3_GDS_BLUETOOTH; 1146 break; 1147 case ACER_CAP_THREEG: 1148 device = ACER_WMID3_GDS_THREEG; 1149 break; 1150 default: 1151 return AE_ERROR; 1152 } 1153 return wmid3_set_device_status(value, device); 1154} 1155 1156static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 1157{ 1158 struct hotkey_function_type_aa *type_aa; 1159 1160 /* We are looking for OEM-specific Type AAh */ 1161 if (header->type != 0xAA) 1162 return; 1163 1164 has_type_aa = true; 1165 type_aa = (struct hotkey_function_type_aa *) header; 1166 1167 pr_info("Function bitmap for Communication Button: 0x%x\n", 1168 type_aa->commun_func_bitmap); 1169 commun_func_bitmap = type_aa->commun_func_bitmap; 1170 1171 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 1172 interface->capability |= ACER_CAP_WIRELESS; 1173 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 1174 interface->capability |= ACER_CAP_THREEG; 1175 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 1176 interface->capability |= ACER_CAP_BLUETOOTH; 1177 1178 commun_fn_key_number = type_aa->commun_fn_key_number; 1179} 1180 1181static acpi_status WMID_set_capabilities(void) 1182{ 1183 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1184 union acpi_object *obj; 1185 acpi_status status; 1186 u32 devices; 1187 1188 status = wmi_query_block(WMID_GUID2, 1, &out); 1189 if (ACPI_FAILURE(status)) 1190 return status; 1191 1192 obj = (union acpi_object *) out.pointer; 1193 if (obj && obj->type == ACPI_TYPE_BUFFER && 1194 (obj->buffer.length == sizeof(u32) || 1195 obj->buffer.length == sizeof(u64))) { 1196 devices = *((u32 *) obj->buffer.pointer); 1197 } else if (obj->type == ACPI_TYPE_INTEGER) { 1198 devices = (u32) obj->integer.value; 1199 } else { 1200 kfree(out.pointer); 1201 return AE_ERROR; 1202 } 1203 1204 pr_info("Function bitmap for Communication Device: 0x%x\n", devices); 1205 if (devices & 0x07) 1206 interface->capability |= ACER_CAP_WIRELESS; 1207 if (devices & 0x40) 1208 interface->capability |= ACER_CAP_THREEG; 1209 if (devices & 0x10) 1210 interface->capability |= ACER_CAP_BLUETOOTH; 1211 1212 if (!(devices & 0x20)) 1213 max_brightness = 0x9; 1214 1215 kfree(out.pointer); 1216 return status; 1217} 1218 1219static struct wmi_interface wmid_interface = { 1220 .type = ACER_WMID, 1221}; 1222 1223static struct wmi_interface wmid_v2_interface = { 1224 .type = ACER_WMID_v2, 1225}; 1226 1227/* 1228 * Generic Device (interface-independent) 1229 */ 1230 1231static acpi_status get_u32(u32 *value, u32 cap) 1232{ 1233 acpi_status status = AE_ERROR; 1234 1235 switch (interface->type) { 1236 case ACER_AMW0: 1237 status = AMW0_get_u32(value, cap); 1238 break; 1239 case ACER_AMW0_V2: 1240 if (cap == ACER_CAP_MAILLED) { 1241 status = AMW0_get_u32(value, cap); 1242 break; 1243 } 1244 case ACER_WMID: 1245 status = WMID_get_u32(value, cap); 1246 break; 1247 case ACER_WMID_v2: 1248 if (cap & (ACER_CAP_WIRELESS | 1249 ACER_CAP_BLUETOOTH | 1250 ACER_CAP_THREEG)) 1251 status = wmid_v2_get_u32(value, cap); 1252 else if (wmi_has_guid(WMID_GUID2)) 1253 status = WMID_get_u32(value, cap); 1254 break; 1255 } 1256 1257 return status; 1258} 1259 1260static acpi_status set_u32(u32 value, u32 cap) 1261{ 1262 acpi_status status; 1263 1264 if (interface->capability & cap) { 1265 switch (interface->type) { 1266 case ACER_AMW0: 1267 return AMW0_set_u32(value, cap); 1268 case ACER_AMW0_V2: 1269 if (cap == ACER_CAP_MAILLED) 1270 return AMW0_set_u32(value, cap); 1271 1272 /* 1273 * On some models, some WMID methods don't toggle 1274 * properly. For those cases, we want to run the AMW0 1275 * method afterwards to be certain we've really toggled 1276 * the device state. 1277 */ 1278 if (cap == ACER_CAP_WIRELESS || 1279 cap == ACER_CAP_BLUETOOTH) { 1280 status = WMID_set_u32(value, cap); 1281 if (ACPI_FAILURE(status)) 1282 return status; 1283 1284 return AMW0_set_u32(value, cap); 1285 } 1286 case ACER_WMID: 1287 return WMID_set_u32(value, cap); 1288 case ACER_WMID_v2: 1289 if (cap & (ACER_CAP_WIRELESS | 1290 ACER_CAP_BLUETOOTH | 1291 ACER_CAP_THREEG)) 1292 return wmid_v2_set_u32(value, cap); 1293 else if (wmi_has_guid(WMID_GUID2)) 1294 return WMID_set_u32(value, cap); 1295 default: 1296 return AE_BAD_PARAMETER; 1297 } 1298 } 1299 return AE_BAD_PARAMETER; 1300} 1301 1302static void __init acer_commandline_init(void) 1303{ 1304 /* 1305 * These will all fail silently if the value given is invalid, or the 1306 * capability isn't available on the given interface 1307 */ 1308 if (mailled >= 0) 1309 set_u32(mailled, ACER_CAP_MAILLED); 1310 if (!has_type_aa && threeg >= 0) 1311 set_u32(threeg, ACER_CAP_THREEG); 1312 if (brightness >= 0) 1313 set_u32(brightness, ACER_CAP_BRIGHTNESS); 1314} 1315 1316/* 1317 * LED device (Mail LED only, no other LEDs known yet) 1318 */ 1319static void mail_led_set(struct led_classdev *led_cdev, 1320enum led_brightness value) 1321{ 1322 set_u32(value, ACER_CAP_MAILLED); 1323} 1324 1325static struct led_classdev mail_led = { 1326 .name = "acer-wmi::mail", 1327 .brightness_set = mail_led_set, 1328}; 1329 1330static int __devinit acer_led_init(struct device *dev) 1331{ 1332 return led_classdev_register(dev, &mail_led); 1333} 1334 1335static void acer_led_exit(void) 1336{ 1337 set_u32(LED_OFF, ACER_CAP_MAILLED); 1338 led_classdev_unregister(&mail_led); 1339} 1340 1341/* 1342 * Backlight device 1343 */ 1344static struct backlight_device *acer_backlight_device; 1345 1346static int read_brightness(struct backlight_device *bd) 1347{ 1348 u32 value; 1349 get_u32(&value, ACER_CAP_BRIGHTNESS); 1350 return value; 1351} 1352 1353static int update_bl_status(struct backlight_device *bd) 1354{ 1355 int intensity = bd->props.brightness; 1356 1357 if (bd->props.power != FB_BLANK_UNBLANK) 1358 intensity = 0; 1359 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1360 intensity = 0; 1361 1362 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1363 1364 return 0; 1365} 1366 1367static const struct backlight_ops acer_bl_ops = { 1368 .get_brightness = read_brightness, 1369 .update_status = update_bl_status, 1370}; 1371 1372static int __devinit acer_backlight_init(struct device *dev) 1373{ 1374 struct backlight_properties props; 1375 struct backlight_device *bd; 1376 1377 memset(&props, 0, sizeof(struct backlight_properties)); 1378 props.type = BACKLIGHT_PLATFORM; 1379 props.max_brightness = max_brightness; 1380 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1381 &props); 1382 if (IS_ERR(bd)) { 1383 pr_err("Could not register Acer backlight device\n"); 1384 acer_backlight_device = NULL; 1385 return PTR_ERR(bd); 1386 } 1387 1388 acer_backlight_device = bd; 1389 1390 bd->props.power = FB_BLANK_UNBLANK; 1391 bd->props.brightness = read_brightness(bd); 1392 backlight_update_status(bd); 1393 return 0; 1394} 1395 1396static void acer_backlight_exit(void) 1397{ 1398 backlight_device_unregister(acer_backlight_device); 1399} 1400 1401/* 1402 * Rfkill devices 1403 */ 1404static void acer_rfkill_update(struct work_struct *ignored); 1405static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1406static void acer_rfkill_update(struct work_struct *ignored) 1407{ 1408 u32 state; 1409 acpi_status status; 1410 1411 if (has_cap(ACER_CAP_WIRELESS)) { 1412 status = get_u32(&state, ACER_CAP_WIRELESS); 1413 if (ACPI_SUCCESS(status)) { 1414 if (quirks->wireless == 3) 1415 rfkill_set_hw_state(wireless_rfkill, !state); 1416 else 1417 rfkill_set_sw_state(wireless_rfkill, !state); 1418 } 1419 } 1420 1421 if (has_cap(ACER_CAP_BLUETOOTH)) { 1422 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1423 if (ACPI_SUCCESS(status)) 1424 rfkill_set_sw_state(bluetooth_rfkill, !state); 1425 } 1426 1427 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1428 status = get_u32(&state, ACER_WMID3_GDS_THREEG); 1429 if (ACPI_SUCCESS(status)) 1430 rfkill_set_sw_state(threeg_rfkill, !state); 1431 } 1432 1433 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1434} 1435 1436static int acer_rfkill_set(void *data, bool blocked) 1437{ 1438 acpi_status status; 1439 u32 cap = (unsigned long)data; 1440 1441 if (rfkill_inited) { 1442 status = set_u32(!blocked, cap); 1443 if (ACPI_FAILURE(status)) 1444 return -ENODEV; 1445 } 1446 1447 return 0; 1448} 1449 1450static const struct rfkill_ops acer_rfkill_ops = { 1451 .set_block = acer_rfkill_set, 1452}; 1453 1454static struct rfkill *acer_rfkill_register(struct device *dev, 1455 enum rfkill_type type, 1456 char *name, u32 cap) 1457{ 1458 int err; 1459 struct rfkill *rfkill_dev; 1460 u32 state; 1461 acpi_status status; 1462 1463 rfkill_dev = rfkill_alloc(name, dev, type, 1464 &acer_rfkill_ops, 1465 (void *)(unsigned long)cap); 1466 if (!rfkill_dev) 1467 return ERR_PTR(-ENOMEM); 1468 1469 status = get_u32(&state, cap); 1470 1471 err = rfkill_register(rfkill_dev); 1472 if (err) { 1473 rfkill_destroy(rfkill_dev); 1474 return ERR_PTR(err); 1475 } 1476 1477 if (ACPI_SUCCESS(status)) 1478 rfkill_set_sw_state(rfkill_dev, !state); 1479 1480 return rfkill_dev; 1481} 1482 1483static int acer_rfkill_init(struct device *dev) 1484{ 1485 int err; 1486 1487 if (has_cap(ACER_CAP_WIRELESS)) { 1488 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1489 "acer-wireless", ACER_CAP_WIRELESS); 1490 if (IS_ERR(wireless_rfkill)) { 1491 err = PTR_ERR(wireless_rfkill); 1492 goto error_wireless; 1493 } 1494 } 1495 1496 if (has_cap(ACER_CAP_BLUETOOTH)) { 1497 bluetooth_rfkill = acer_rfkill_register(dev, 1498 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1499 ACER_CAP_BLUETOOTH); 1500 if (IS_ERR(bluetooth_rfkill)) { 1501 err = PTR_ERR(bluetooth_rfkill); 1502 goto error_bluetooth; 1503 } 1504 } 1505 1506 if (has_cap(ACER_CAP_THREEG)) { 1507 threeg_rfkill = acer_rfkill_register(dev, 1508 RFKILL_TYPE_WWAN, "acer-threeg", 1509 ACER_CAP_THREEG); 1510 if (IS_ERR(threeg_rfkill)) { 1511 err = PTR_ERR(threeg_rfkill); 1512 goto error_threeg; 1513 } 1514 } 1515 1516 rfkill_inited = true; 1517 1518 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1519 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1520 schedule_delayed_work(&acer_rfkill_work, 1521 round_jiffies_relative(HZ)); 1522 1523 return 0; 1524 1525error_threeg: 1526 if (has_cap(ACER_CAP_BLUETOOTH)) { 1527 rfkill_unregister(bluetooth_rfkill); 1528 rfkill_destroy(bluetooth_rfkill); 1529 } 1530error_bluetooth: 1531 if (has_cap(ACER_CAP_WIRELESS)) { 1532 rfkill_unregister(wireless_rfkill); 1533 rfkill_destroy(wireless_rfkill); 1534 } 1535error_wireless: 1536 return err; 1537} 1538 1539static void acer_rfkill_exit(void) 1540{ 1541 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1542 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1543 cancel_delayed_work_sync(&acer_rfkill_work); 1544 1545 if (has_cap(ACER_CAP_WIRELESS)) { 1546 rfkill_unregister(wireless_rfkill); 1547 rfkill_destroy(wireless_rfkill); 1548 } 1549 1550 if (has_cap(ACER_CAP_BLUETOOTH)) { 1551 rfkill_unregister(bluetooth_rfkill); 1552 rfkill_destroy(bluetooth_rfkill); 1553 } 1554 1555 if (has_cap(ACER_CAP_THREEG)) { 1556 rfkill_unregister(threeg_rfkill); 1557 rfkill_destroy(threeg_rfkill); 1558 } 1559 return; 1560} 1561 1562/* 1563 * sysfs interface 1564 */ 1565static ssize_t show_bool_threeg(struct device *dev, 1566 struct device_attribute *attr, char *buf) 1567{ 1568 u32 result; \ 1569 acpi_status status; 1570 1571 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1572 current->comm); 1573 status = get_u32(&result, ACER_CAP_THREEG); 1574 if (ACPI_SUCCESS(status)) 1575 return sprintf(buf, "%u\n", result); 1576 return sprintf(buf, "Read error\n"); 1577} 1578 1579static ssize_t set_bool_threeg(struct device *dev, 1580 struct device_attribute *attr, const char *buf, size_t count) 1581{ 1582 u32 tmp = simple_strtoul(buf, NULL, 10); 1583 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1584 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1585 current->comm); 1586 if (ACPI_FAILURE(status)) 1587 return -EINVAL; 1588 return count; 1589} 1590static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg, 1591 set_bool_threeg); 1592 1593static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1594 char *buf) 1595{ 1596 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n", 1597 current->comm); 1598 switch (interface->type) { 1599 case ACER_AMW0: 1600 return sprintf(buf, "AMW0\n"); 1601 case ACER_AMW0_V2: 1602 return sprintf(buf, "AMW0 v2\n"); 1603 case ACER_WMID: 1604 return sprintf(buf, "WMID\n"); 1605 case ACER_WMID_v2: 1606 return sprintf(buf, "WMID v2\n"); 1607 default: 1608 return sprintf(buf, "Error!\n"); 1609 } 1610} 1611 1612static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1613 1614static void acer_wmi_notify(u32 value, void *context) 1615{ 1616 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1617 union acpi_object *obj; 1618 struct event_return_value return_value; 1619 acpi_status status; 1620 u16 device_state; 1621 const struct key_entry *key; 1622 1623 status = wmi_get_event_data(value, &response); 1624 if (status != AE_OK) { 1625 pr_warn("bad event status 0x%x\n", status); 1626 return; 1627 } 1628 1629 obj = (union acpi_object *)response.pointer; 1630 1631 if (!obj) 1632 return; 1633 if (obj->type != ACPI_TYPE_BUFFER) { 1634 pr_warn("Unknown response received %d\n", obj->type); 1635 kfree(obj); 1636 return; 1637 } 1638 if (obj->buffer.length != 8) { 1639 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1640 kfree(obj); 1641 return; 1642 } 1643 1644 return_value = *((struct event_return_value *)obj->buffer.pointer); 1645 kfree(obj); 1646 1647 switch (return_value.function) { 1648 case WMID_HOTKEY_EVENT: 1649 device_state = return_value.device_state; 1650 pr_debug("device state: 0x%x\n", device_state); 1651 1652 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev, 1653 return_value.key_num); 1654 if (!key) { 1655 pr_warn("Unknown key number - 0x%x\n", 1656 return_value.key_num); 1657 } else { 1658 switch (key->keycode) { 1659 case KEY_WLAN: 1660 case KEY_BLUETOOTH: 1661 if (has_cap(ACER_CAP_WIRELESS)) 1662 rfkill_set_sw_state(wireless_rfkill, 1663 !(device_state & ACER_WMID3_GDS_WIRELESS)); 1664 if (has_cap(ACER_CAP_THREEG)) 1665 rfkill_set_sw_state(threeg_rfkill, 1666 !(device_state & ACER_WMID3_GDS_THREEG)); 1667 if (has_cap(ACER_CAP_BLUETOOTH)) 1668 rfkill_set_sw_state(bluetooth_rfkill, 1669 !(device_state & ACER_WMID3_GDS_BLUETOOTH)); 1670 break; 1671 } 1672 sparse_keymap_report_entry(acer_wmi_input_dev, key, 1673 1, true); 1674 } 1675 break; 1676 default: 1677 pr_warn("Unknown function number - %d - %d\n", 1678 return_value.function, return_value.key_num); 1679 break; 1680 } 1681} 1682 1683static acpi_status 1684wmid3_set_lm_mode(struct lm_input_params *params, 1685 struct lm_return_value *return_value) 1686{ 1687 acpi_status status; 1688 union acpi_object *obj; 1689 1690 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1691 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1692 1693 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1694 if (ACPI_FAILURE(status)) 1695 return status; 1696 1697 obj = output.pointer; 1698 1699 if (!obj) 1700 return AE_ERROR; 1701 else if (obj->type != ACPI_TYPE_BUFFER) { 1702 kfree(obj); 1703 return AE_ERROR; 1704 } 1705 if (obj->buffer.length != 4) { 1706 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1707 kfree(obj); 1708 return AE_ERROR; 1709 } 1710 1711 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1712 kfree(obj); 1713 1714 return status; 1715} 1716 1717static int acer_wmi_enable_ec_raw(void) 1718{ 1719 struct lm_return_value return_value; 1720 acpi_status status; 1721 struct lm_input_params params = { 1722 .function_num = 0x1, 1723 .commun_devices = 0xFFFF, 1724 .devices = 0xFFFF, 1725 .lm_status = 0x00, /* Launch Manager Deactive */ 1726 }; 1727 1728 status = wmid3_set_lm_mode(¶ms, &return_value); 1729 1730 if (return_value.error_code || return_value.ec_return_value) 1731 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n", 1732 return_value.error_code, 1733 return_value.ec_return_value); 1734 else 1735 pr_info("Enabled EC raw mode\n"); 1736 1737 return status; 1738} 1739 1740static int acer_wmi_enable_lm(void) 1741{ 1742 struct lm_return_value return_value; 1743 acpi_status status; 1744 struct lm_input_params params = { 1745 .function_num = 0x1, 1746 .commun_devices = 0xFFFF, 1747 .devices = 0xFFFF, 1748 .lm_status = 0x01, /* Launch Manager Active */ 1749 }; 1750 1751 status = wmid3_set_lm_mode(¶ms, &return_value); 1752 1753 if (return_value.error_code || return_value.ec_return_value) 1754 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n", 1755 return_value.error_code, 1756 return_value.ec_return_value); 1757 1758 return status; 1759} 1760 1761static int __init acer_wmi_input_setup(void) 1762{ 1763 acpi_status status; 1764 int err; 1765 1766 acer_wmi_input_dev = input_allocate_device(); 1767 if (!acer_wmi_input_dev) 1768 return -ENOMEM; 1769 1770 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1771 acer_wmi_input_dev->phys = "wmi/input0"; 1772 acer_wmi_input_dev->id.bustype = BUS_HOST; 1773 1774 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1775 if (err) 1776 goto err_free_dev; 1777 1778 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1779 acer_wmi_notify, NULL); 1780 if (ACPI_FAILURE(status)) { 1781 err = -EIO; 1782 goto err_free_keymap; 1783 } 1784 1785 err = input_register_device(acer_wmi_input_dev); 1786 if (err) 1787 goto err_uninstall_notifier; 1788 1789 return 0; 1790 1791err_uninstall_notifier: 1792 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1793err_free_keymap: 1794 sparse_keymap_free(acer_wmi_input_dev); 1795err_free_dev: 1796 input_free_device(acer_wmi_input_dev); 1797 return err; 1798} 1799 1800static void acer_wmi_input_destroy(void) 1801{ 1802 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1803 sparse_keymap_free(acer_wmi_input_dev); 1804 input_unregister_device(acer_wmi_input_dev); 1805} 1806 1807/* 1808 * debugfs functions 1809 */ 1810static u32 get_wmid_devices(void) 1811{ 1812 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1813 union acpi_object *obj; 1814 acpi_status status; 1815 u32 devices = 0; 1816 1817 status = wmi_query_block(WMID_GUID2, 1, &out); 1818 if (ACPI_FAILURE(status)) 1819 return 0; 1820 1821 obj = (union acpi_object *) out.pointer; 1822 if (obj && obj->type == ACPI_TYPE_BUFFER && 1823 (obj->buffer.length == sizeof(u32) || 1824 obj->buffer.length == sizeof(u64))) { 1825 devices = *((u32 *) obj->buffer.pointer); 1826 } else if (obj->type == ACPI_TYPE_INTEGER) { 1827 devices = (u32) obj->integer.value; 1828 } 1829 1830 kfree(out.pointer); 1831 return devices; 1832} 1833 1834/* 1835 * Platform device 1836 */ 1837static int __devinit acer_platform_probe(struct platform_device *device) 1838{ 1839 int err; 1840 1841 if (has_cap(ACER_CAP_MAILLED)) { 1842 err = acer_led_init(&device->dev); 1843 if (err) 1844 goto error_mailled; 1845 } 1846 1847 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1848 err = acer_backlight_init(&device->dev); 1849 if (err) 1850 goto error_brightness; 1851 } 1852 1853 err = acer_rfkill_init(&device->dev); 1854 if (err) 1855 goto error_rfkill; 1856 1857 return err; 1858 1859error_rfkill: 1860 if (has_cap(ACER_CAP_BRIGHTNESS)) 1861 acer_backlight_exit(); 1862error_brightness: 1863 if (has_cap(ACER_CAP_MAILLED)) 1864 acer_led_exit(); 1865error_mailled: 1866 return err; 1867} 1868 1869static int acer_platform_remove(struct platform_device *device) 1870{ 1871 if (has_cap(ACER_CAP_MAILLED)) 1872 acer_led_exit(); 1873 if (has_cap(ACER_CAP_BRIGHTNESS)) 1874 acer_backlight_exit(); 1875 1876 acer_rfkill_exit(); 1877 return 0; 1878} 1879 1880static int acer_suspend(struct device *dev) 1881{ 1882 u32 value; 1883 struct acer_data *data = &interface->data; 1884 1885 if (!data) 1886 return -ENOMEM; 1887 1888 if (has_cap(ACER_CAP_MAILLED)) { 1889 get_u32(&value, ACER_CAP_MAILLED); 1890 set_u32(LED_OFF, ACER_CAP_MAILLED); 1891 data->mailled = value; 1892 } 1893 1894 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1895 get_u32(&value, ACER_CAP_BRIGHTNESS); 1896 data->brightness = value; 1897 } 1898 1899 return 0; 1900} 1901 1902static int acer_resume(struct device *dev) 1903{ 1904 struct acer_data *data = &interface->data; 1905 1906 if (!data) 1907 return -ENOMEM; 1908 1909 if (has_cap(ACER_CAP_MAILLED)) 1910 set_u32(data->mailled, ACER_CAP_MAILLED); 1911 1912 if (has_cap(ACER_CAP_BRIGHTNESS)) 1913 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 1914 1915 return 0; 1916} 1917 1918static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume); 1919 1920static void acer_platform_shutdown(struct platform_device *device) 1921{ 1922 struct acer_data *data = &interface->data; 1923 1924 if (!data) 1925 return; 1926 1927 if (has_cap(ACER_CAP_MAILLED)) 1928 set_u32(LED_OFF, ACER_CAP_MAILLED); 1929} 1930 1931static struct platform_driver acer_platform_driver = { 1932 .driver = { 1933 .name = "acer-wmi", 1934 .owner = THIS_MODULE, 1935 .pm = &acer_pm, 1936 }, 1937 .probe = acer_platform_probe, 1938 .remove = acer_platform_remove, 1939 .shutdown = acer_platform_shutdown, 1940}; 1941 1942static struct platform_device *acer_platform_device; 1943 1944static int remove_sysfs(struct platform_device *device) 1945{ 1946 if (has_cap(ACER_CAP_THREEG)) 1947 device_remove_file(&device->dev, &dev_attr_threeg); 1948 1949 device_remove_file(&device->dev, &dev_attr_interface); 1950 1951 return 0; 1952} 1953 1954static int create_sysfs(void) 1955{ 1956 int retval = -ENOMEM; 1957 1958 if (has_cap(ACER_CAP_THREEG)) { 1959 retval = device_create_file(&acer_platform_device->dev, 1960 &dev_attr_threeg); 1961 if (retval) 1962 goto error_sysfs; 1963 } 1964 1965 retval = device_create_file(&acer_platform_device->dev, 1966 &dev_attr_interface); 1967 if (retval) 1968 goto error_sysfs; 1969 1970 return 0; 1971 1972error_sysfs: 1973 remove_sysfs(acer_platform_device); 1974 return retval; 1975} 1976 1977static void remove_debugfs(void) 1978{ 1979 debugfs_remove(interface->debug.devices); 1980 debugfs_remove(interface->debug.root); 1981} 1982 1983static int create_debugfs(void) 1984{ 1985 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 1986 if (!interface->debug.root) { 1987 pr_err("Failed to create debugfs directory"); 1988 return -ENOMEM; 1989 } 1990 1991 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 1992 interface->debug.root, 1993 &interface->debug.wmid_devices); 1994 if (!interface->debug.devices) 1995 goto error_debugfs; 1996 1997 return 0; 1998 1999error_debugfs: 2000 remove_debugfs(); 2001 return -ENOMEM; 2002} 2003 2004static int __init acer_wmi_init(void) 2005{ 2006 int err; 2007 2008 pr_info("Acer Laptop ACPI-WMI Extras\n"); 2009 2010 if (dmi_check_system(acer_blacklist)) { 2011 pr_info("Blacklisted hardware detected - not loading\n"); 2012 return -ENODEV; 2013 } 2014 2015 find_quirks(); 2016 2017 /* 2018 * Detect which ACPI-WMI interface we're using. 2019 */ 2020 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 2021 interface = &AMW0_V2_interface; 2022 2023 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 2024 interface = &wmid_interface; 2025 2026 if (wmi_has_guid(WMID_GUID3)) 2027 interface = &wmid_v2_interface; 2028 2029 if (interface) 2030 dmi_walk(type_aa_dmi_decode, NULL); 2031 2032 if (wmi_has_guid(WMID_GUID2) && interface) { 2033 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) { 2034 pr_err("Unable to detect available WMID devices\n"); 2035 return -ENODEV; 2036 } 2037 /* WMID always provides brightness methods */ 2038 interface->capability |= ACER_CAP_BRIGHTNESS; 2039 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) { 2040 pr_err("No WMID device detection method found\n"); 2041 return -ENODEV; 2042 } 2043 2044 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 2045 interface = &AMW0_interface; 2046 2047 if (ACPI_FAILURE(AMW0_set_capabilities())) { 2048 pr_err("Unable to detect available AMW0 devices\n"); 2049 return -ENODEV; 2050 } 2051 } 2052 2053 if (wmi_has_guid(AMW0_GUID1)) 2054 AMW0_find_mailled(); 2055 2056 if (!interface) { 2057 pr_err("No or unsupported WMI interface, unable to load\n"); 2058 return -ENODEV; 2059 } 2060 2061 set_quirks(); 2062 2063 if (acpi_video_backlight_support()) { 2064 if (dmi_check_system(video_vendor_dmi_table)) { 2065 acpi_video_unregister(); 2066 } else { 2067 interface->capability &= ~ACER_CAP_BRIGHTNESS; 2068 pr_info("Brightness must be controlled by " 2069 "acpi video driver\n"); 2070 } 2071 } 2072 2073 if (wmi_has_guid(WMID_GUID3)) { 2074 if (ec_raw_mode) { 2075 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 2076 pr_err("Cannot enable EC raw mode\n"); 2077 return -ENODEV; 2078 } 2079 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 2080 pr_err("Cannot enable Launch Manager mode\n"); 2081 return -ENODEV; 2082 } 2083 } else if (ec_raw_mode) { 2084 pr_info("No WMID EC raw mode enable method\n"); 2085 } 2086 2087 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 2088 err = acer_wmi_input_setup(); 2089 if (err) 2090 return err; 2091 } 2092 2093 err = platform_driver_register(&acer_platform_driver); 2094 if (err) { 2095 pr_err("Unable to register platform driver\n"); 2096 goto error_platform_register; 2097 } 2098 2099 acer_platform_device = platform_device_alloc("acer-wmi", -1); 2100 if (!acer_platform_device) { 2101 err = -ENOMEM; 2102 goto error_device_alloc; 2103 } 2104 2105 err = platform_device_add(acer_platform_device); 2106 if (err) 2107 goto error_device_add; 2108 2109 err = create_sysfs(); 2110 if (err) 2111 goto error_create_sys; 2112 2113 if (wmi_has_guid(WMID_GUID2)) { 2114 interface->debug.wmid_devices = get_wmid_devices(); 2115 err = create_debugfs(); 2116 if (err) 2117 goto error_create_debugfs; 2118 } 2119 2120 /* Override any initial settings with values from the commandline */ 2121 acer_commandline_init(); 2122 2123 return 0; 2124 2125error_create_debugfs: 2126 remove_sysfs(acer_platform_device); 2127error_create_sys: 2128 platform_device_del(acer_platform_device); 2129error_device_add: 2130 platform_device_put(acer_platform_device); 2131error_device_alloc: 2132 platform_driver_unregister(&acer_platform_driver); 2133error_platform_register: 2134 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2135 acer_wmi_input_destroy(); 2136 2137 return err; 2138} 2139 2140static void __exit acer_wmi_exit(void) 2141{ 2142 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2143 acer_wmi_input_destroy(); 2144 2145 remove_sysfs(acer_platform_device); 2146 remove_debugfs(); 2147 platform_device_unregister(acer_platform_device); 2148 platform_driver_unregister(&acer_platform_driver); 2149 2150 pr_info("Acer Laptop WMI Extras unloaded\n"); 2151 return; 2152} 2153 2154module_init(acer_wmi_init); 2155module_exit(acer_wmi_exit); 2156