acer-wmi.c revision 5719b81988f3c24ff694dc3a37e35b35630a3966
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 47MODULE_AUTHOR("Carlos Corbacho"); 48MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); 49MODULE_LICENSE("GPL"); 50 51/* 52 * Magic Number 53 * Meaning is unknown - this number is required for writing to ACPI for AMW0 54 * (it's also used in acerhk when directly accessing the BIOS) 55 */ 56#define ACER_AMW0_WRITE 0x9610 57 58/* 59 * Bit masks for the AMW0 interface 60 */ 61#define ACER_AMW0_WIRELESS_MASK 0x35 62#define ACER_AMW0_BLUETOOTH_MASK 0x34 63#define ACER_AMW0_MAILLED_MASK 0x31 64 65/* 66 * Method IDs for WMID interface 67 */ 68#define ACER_WMID_GET_WIRELESS_METHODID 1 69#define ACER_WMID_GET_BLUETOOTH_METHODID 2 70#define ACER_WMID_GET_BRIGHTNESS_METHODID 3 71#define ACER_WMID_SET_WIRELESS_METHODID 4 72#define ACER_WMID_SET_BLUETOOTH_METHODID 5 73#define ACER_WMID_SET_BRIGHTNESS_METHODID 6 74#define ACER_WMID_GET_THREEG_METHODID 10 75#define ACER_WMID_SET_THREEG_METHODID 11 76 77/* 78 * Acer ACPI method GUIDs 79 */ 80#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" 81#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" 82#define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3" 83#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A" 84#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" 85 86/* 87 * Acer ACPI event GUIDs 88 */ 89#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" 90 91MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); 92MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"); 93MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 94 95enum acer_wmi_event_ids { 96 WMID_HOTKEY_EVENT = 0x1, 97}; 98 99static const struct key_entry acer_wmi_keymap[] = { 100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ 101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */ 102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */ 103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ 104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ 105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ 106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ 107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ 108 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */ 109 {KE_IGNORE, 0x41, {KEY_MUTE} }, 110 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} }, 111 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} }, 112 {KE_IGNORE, 0x43, {KEY_NEXTSONG} }, 113 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} }, 114 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} }, 115 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} }, 116 {KE_IGNORE, 0x45, {KEY_STOP} }, 117 {KE_IGNORE, 0x50, {KEY_STOP} }, 118 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} }, 119 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} }, 120 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} }, 121 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} }, 122 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} }, 123 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} }, 124 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 125 {KE_IGNORE, 0x81, {KEY_SLEEP} }, 126 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */ 127 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} }, 128 {KE_END, 0} 129}; 130 131static struct input_dev *acer_wmi_input_dev; 132 133struct event_return_value { 134 u8 function; 135 u8 key_num; 136 u16 device_state; 137 u32 reserved; 138} __attribute__((packed)); 139 140/* 141 * GUID3 Get Device Status device flags 142 */ 143#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 144#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 145#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */ 146#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 147 148struct lm_input_params { 149 u8 function_num; /* Function Number */ 150 u16 commun_devices; /* Communication type devices default status */ 151 u16 devices; /* Other type devices default status */ 152 u8 lm_status; /* Launch Manager Status */ 153 u16 reserved; 154} __attribute__((packed)); 155 156struct lm_return_value { 157 u8 error_code; /* Error Code */ 158 u8 ec_return_value; /* EC Return Value */ 159 u16 reserved; 160} __attribute__((packed)); 161 162struct wmid3_gds_set_input_param { /* Set Device Status input parameter */ 163 u8 function_num; /* Function Number */ 164 u8 hotkey_number; /* Hotkey Number */ 165 u16 devices; /* Set Device */ 166 u8 volume_value; /* Volume Value */ 167} __attribute__((packed)); 168 169struct wmid3_gds_get_input_param { /* Get Device Status input parameter */ 170 u8 function_num; /* Function Number */ 171 u8 hotkey_number; /* Hotkey Number */ 172 u16 devices; /* Get Device */ 173} __attribute__((packed)); 174 175struct wmid3_gds_return_value { /* Get Device Status return value*/ 176 u8 error_code; /* Error Code */ 177 u8 ec_return_value; /* EC Return Value */ 178 u16 devices; /* Current Device Status */ 179 u32 reserved; 180} __attribute__((packed)); 181 182struct hotkey_function_type_aa { 183 u8 type; 184 u8 length; 185 u16 handle; 186 u16 commun_func_bitmap; 187 u16 application_func_bitmap; 188 u16 media_func_bitmap; 189 u16 display_func_bitmap; 190 u16 others_func_bitmap; 191 u8 commun_fn_key_number; 192} __attribute__((packed)); 193 194/* 195 * Interface capability flags 196 */ 197#define ACER_CAP_MAILLED (1<<0) 198#define ACER_CAP_WIRELESS (1<<1) 199#define ACER_CAP_BLUETOOTH (1<<2) 200#define ACER_CAP_BRIGHTNESS (1<<3) 201#define ACER_CAP_THREEG (1<<4) 202#define ACER_CAP_ANY (0xFFFFFFFF) 203 204/* 205 * Interface type flags 206 */ 207enum interface_flags { 208 ACER_AMW0, 209 ACER_AMW0_V2, 210 ACER_WMID, 211 ACER_WMID_v2, 212}; 213 214#define ACER_DEFAULT_WIRELESS 0 215#define ACER_DEFAULT_BLUETOOTH 0 216#define ACER_DEFAULT_MAILLED 0 217#define ACER_DEFAULT_THREEG 0 218 219static int max_brightness = 0xF; 220 221static int mailled = -1; 222static int brightness = -1; 223static int threeg = -1; 224static int force_series; 225static bool ec_raw_mode; 226static bool has_type_aa; 227static u16 commun_func_bitmap; 228static u8 commun_fn_key_number; 229 230module_param(mailled, int, 0444); 231module_param(brightness, int, 0444); 232module_param(threeg, int, 0444); 233module_param(force_series, int, 0444); 234module_param(ec_raw_mode, bool, 0444); 235MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 236MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 237MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 238MODULE_PARM_DESC(force_series, "Force a different laptop series"); 239MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 240 241struct acer_data { 242 int mailled; 243 int threeg; 244 int brightness; 245}; 246 247struct acer_debug { 248 struct dentry *root; 249 struct dentry *devices; 250 u32 wmid_devices; 251}; 252 253static struct rfkill *wireless_rfkill; 254static struct rfkill *bluetooth_rfkill; 255static struct rfkill *threeg_rfkill; 256static bool rfkill_inited; 257 258/* Each low-level interface must define at least some of the following */ 259struct wmi_interface { 260 /* The WMI device type */ 261 u32 type; 262 263 /* The capabilities this interface provides */ 264 u32 capability; 265 266 /* Private data for the current interface */ 267 struct acer_data data; 268 269 /* debugfs entries associated with this interface */ 270 struct acer_debug debug; 271}; 272 273/* The static interface pointer, points to the currently detected interface */ 274static struct wmi_interface *interface; 275 276/* 277 * Embedded Controller quirks 278 * Some laptops require us to directly access the EC to either enable or query 279 * features that are not available through WMI. 280 */ 281 282struct quirk_entry { 283 u8 wireless; 284 u8 mailled; 285 s8 brightness; 286 u8 bluetooth; 287}; 288 289static struct quirk_entry *quirks; 290 291static void set_quirks(void) 292{ 293 if (!interface) 294 return; 295 296 if (quirks->mailled) 297 interface->capability |= ACER_CAP_MAILLED; 298 299 if (quirks->brightness) 300 interface->capability |= ACER_CAP_BRIGHTNESS; 301} 302 303static int dmi_matched(const struct dmi_system_id *dmi) 304{ 305 quirks = dmi->driver_data; 306 return 1; 307} 308 309static struct quirk_entry quirk_unknown = { 310}; 311 312static struct quirk_entry quirk_acer_aspire_1520 = { 313 .brightness = -1, 314}; 315 316static struct quirk_entry quirk_acer_travelmate_2490 = { 317 .mailled = 1, 318}; 319 320/* This AMW0 laptop has no bluetooth */ 321static struct quirk_entry quirk_medion_md_98300 = { 322 .wireless = 1, 323}; 324 325static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 326 .wireless = 2, 327}; 328 329static struct quirk_entry quirk_lenovo_ideapad_s205 = { 330 .wireless = 3, 331}; 332 333/* The Aspire One has a dummy ACPI-WMI interface - disable it */ 334static struct dmi_system_id __devinitdata acer_blacklist[] = { 335 { 336 .ident = "Acer Aspire One (SSD)", 337 .matches = { 338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 339 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 340 }, 341 }, 342 { 343 .ident = "Acer Aspire One (HDD)", 344 .matches = { 345 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 346 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 347 }, 348 }, 349 {} 350}; 351 352static struct dmi_system_id acer_quirks[] = { 353 { 354 .callback = dmi_matched, 355 .ident = "Acer Aspire 1360", 356 .matches = { 357 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 358 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 359 }, 360 .driver_data = &quirk_acer_aspire_1520, 361 }, 362 { 363 .callback = dmi_matched, 364 .ident = "Acer Aspire 1520", 365 .matches = { 366 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 367 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 368 }, 369 .driver_data = &quirk_acer_aspire_1520, 370 }, 371 { 372 .callback = dmi_matched, 373 .ident = "Acer Aspire 3100", 374 .matches = { 375 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 376 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 377 }, 378 .driver_data = &quirk_acer_travelmate_2490, 379 }, 380 { 381 .callback = dmi_matched, 382 .ident = "Acer Aspire 3610", 383 .matches = { 384 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 385 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 386 }, 387 .driver_data = &quirk_acer_travelmate_2490, 388 }, 389 { 390 .callback = dmi_matched, 391 .ident = "Acer Aspire 5100", 392 .matches = { 393 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 394 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 395 }, 396 .driver_data = &quirk_acer_travelmate_2490, 397 }, 398 { 399 .callback = dmi_matched, 400 .ident = "Acer Aspire 5610", 401 .matches = { 402 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 403 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 404 }, 405 .driver_data = &quirk_acer_travelmate_2490, 406 }, 407 { 408 .callback = dmi_matched, 409 .ident = "Acer Aspire 5630", 410 .matches = { 411 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 412 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 413 }, 414 .driver_data = &quirk_acer_travelmate_2490, 415 }, 416 { 417 .callback = dmi_matched, 418 .ident = "Acer Aspire 5650", 419 .matches = { 420 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 421 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 422 }, 423 .driver_data = &quirk_acer_travelmate_2490, 424 }, 425 { 426 .callback = dmi_matched, 427 .ident = "Acer Aspire 5680", 428 .matches = { 429 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 430 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 431 }, 432 .driver_data = &quirk_acer_travelmate_2490, 433 }, 434 { 435 .callback = dmi_matched, 436 .ident = "Acer Aspire 9110", 437 .matches = { 438 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 439 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 440 }, 441 .driver_data = &quirk_acer_travelmate_2490, 442 }, 443 { 444 .callback = dmi_matched, 445 .ident = "Acer TravelMate 2490", 446 .matches = { 447 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 448 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 449 }, 450 .driver_data = &quirk_acer_travelmate_2490, 451 }, 452 { 453 .callback = dmi_matched, 454 .ident = "Acer TravelMate 4200", 455 .matches = { 456 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 457 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 458 }, 459 .driver_data = &quirk_acer_travelmate_2490, 460 }, 461 { 462 .callback = dmi_matched, 463 .ident = "Fujitsu Siemens Amilo Li 1718", 464 .matches = { 465 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 466 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 467 }, 468 .driver_data = &quirk_fujitsu_amilo_li_1718, 469 }, 470 { 471 .callback = dmi_matched, 472 .ident = "Medion MD 98300", 473 .matches = { 474 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 475 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 476 }, 477 .driver_data = &quirk_medion_md_98300, 478 }, 479 { 480 .callback = dmi_matched, 481 .ident = "Lenovo Ideapad S205", 482 .matches = { 483 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 484 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"), 485 }, 486 .driver_data = &quirk_lenovo_ideapad_s205, 487 }, 488 { 489 .callback = dmi_matched, 490 .ident = "Lenovo Ideapad S205 (Brazos)", 491 .matches = { 492 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 493 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"), 494 }, 495 .driver_data = &quirk_lenovo_ideapad_s205, 496 }, 497 { 498 .callback = dmi_matched, 499 .ident = "Lenovo 3000 N200", 500 .matches = { 501 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 502 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"), 503 }, 504 .driver_data = &quirk_fujitsu_amilo_li_1718, 505 }, 506 {} 507}; 508 509/* Find which quirks are needed for a particular vendor/ model pair */ 510static void find_quirks(void) 511{ 512 if (!force_series) { 513 dmi_check_system(acer_quirks); 514 } else if (force_series == 2490) { 515 quirks = &quirk_acer_travelmate_2490; 516 } 517 518 if (quirks == NULL) 519 quirks = &quirk_unknown; 520 521 set_quirks(); 522} 523 524/* 525 * General interface convenience methods 526 */ 527 528static bool has_cap(u32 cap) 529{ 530 if ((interface->capability & cap) != 0) 531 return 1; 532 533 return 0; 534} 535 536/* 537 * AMW0 (V1) interface 538 */ 539struct wmab_args { 540 u32 eax; 541 u32 ebx; 542 u32 ecx; 543 u32 edx; 544}; 545 546struct wmab_ret { 547 u32 eax; 548 u32 ebx; 549 u32 ecx; 550 u32 edx; 551 u32 eex; 552}; 553 554static acpi_status wmab_execute(struct wmab_args *regbuf, 555struct acpi_buffer *result) 556{ 557 struct acpi_buffer input; 558 acpi_status status; 559 input.length = sizeof(struct wmab_args); 560 input.pointer = (u8 *)regbuf; 561 562 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 563 564 return status; 565} 566 567static acpi_status AMW0_get_u32(u32 *value, u32 cap) 568{ 569 int err; 570 u8 result; 571 572 switch (cap) { 573 case ACER_CAP_MAILLED: 574 switch (quirks->mailled) { 575 default: 576 err = ec_read(0xA, &result); 577 if (err) 578 return AE_ERROR; 579 *value = (result >> 7) & 0x1; 580 return AE_OK; 581 } 582 break; 583 case ACER_CAP_WIRELESS: 584 switch (quirks->wireless) { 585 case 1: 586 err = ec_read(0x7B, &result); 587 if (err) 588 return AE_ERROR; 589 *value = result & 0x1; 590 return AE_OK; 591 case 2: 592 err = ec_read(0x71, &result); 593 if (err) 594 return AE_ERROR; 595 *value = result & 0x1; 596 return AE_OK; 597 case 3: 598 err = ec_read(0x78, &result); 599 if (err) 600 return AE_ERROR; 601 *value = result & 0x1; 602 return AE_OK; 603 default: 604 err = ec_read(0xA, &result); 605 if (err) 606 return AE_ERROR; 607 *value = (result >> 2) & 0x1; 608 return AE_OK; 609 } 610 break; 611 case ACER_CAP_BLUETOOTH: 612 switch (quirks->bluetooth) { 613 default: 614 err = ec_read(0xA, &result); 615 if (err) 616 return AE_ERROR; 617 *value = (result >> 4) & 0x1; 618 return AE_OK; 619 } 620 break; 621 case ACER_CAP_BRIGHTNESS: 622 switch (quirks->brightness) { 623 default: 624 err = ec_read(0x83, &result); 625 if (err) 626 return AE_ERROR; 627 *value = result; 628 return AE_OK; 629 } 630 break; 631 default: 632 return AE_ERROR; 633 } 634 return AE_OK; 635} 636 637static acpi_status AMW0_set_u32(u32 value, u32 cap) 638{ 639 struct wmab_args args; 640 641 args.eax = ACER_AMW0_WRITE; 642 args.ebx = value ? (1<<8) : 0; 643 args.ecx = args.edx = 0; 644 645 switch (cap) { 646 case ACER_CAP_MAILLED: 647 if (value > 1) 648 return AE_BAD_PARAMETER; 649 args.ebx |= ACER_AMW0_MAILLED_MASK; 650 break; 651 case ACER_CAP_WIRELESS: 652 if (value > 1) 653 return AE_BAD_PARAMETER; 654 args.ebx |= ACER_AMW0_WIRELESS_MASK; 655 break; 656 case ACER_CAP_BLUETOOTH: 657 if (value > 1) 658 return AE_BAD_PARAMETER; 659 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 660 break; 661 case ACER_CAP_BRIGHTNESS: 662 if (value > max_brightness) 663 return AE_BAD_PARAMETER; 664 switch (quirks->brightness) { 665 default: 666 return ec_write(0x83, value); 667 break; 668 } 669 default: 670 return AE_ERROR; 671 } 672 673 /* Actually do the set */ 674 return wmab_execute(&args, NULL); 675} 676 677static acpi_status AMW0_find_mailled(void) 678{ 679 struct wmab_args args; 680 struct wmab_ret ret; 681 acpi_status status = AE_OK; 682 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 683 union acpi_object *obj; 684 685 args.eax = 0x86; 686 args.ebx = args.ecx = args.edx = 0; 687 688 status = wmab_execute(&args, &out); 689 if (ACPI_FAILURE(status)) 690 return status; 691 692 obj = (union acpi_object *) out.pointer; 693 if (obj && obj->type == ACPI_TYPE_BUFFER && 694 obj->buffer.length == sizeof(struct wmab_ret)) { 695 ret = *((struct wmab_ret *) obj->buffer.pointer); 696 } else { 697 kfree(out.pointer); 698 return AE_ERROR; 699 } 700 701 if (ret.eex & 0x1) 702 interface->capability |= ACER_CAP_MAILLED; 703 704 kfree(out.pointer); 705 706 return AE_OK; 707} 708 709static int AMW0_set_cap_acpi_check_device_found; 710 711static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle, 712 u32 level, void *context, void **retval) 713{ 714 AMW0_set_cap_acpi_check_device_found = 1; 715 return AE_OK; 716} 717 718static const struct acpi_device_id norfkill_ids[] = { 719 { "VPC2004", 0}, 720 { "IBM0068", 0}, 721 { "LEN0068", 0}, 722 { "SNY5001", 0}, /* sony-laptop in charge */ 723 { "", 0}, 724}; 725 726static int AMW0_set_cap_acpi_check_device(void) 727{ 728 const struct acpi_device_id *id; 729 730 for (id = norfkill_ids; id->id[0]; id++) 731 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb, 732 NULL, NULL); 733 return AMW0_set_cap_acpi_check_device_found; 734} 735 736static acpi_status AMW0_set_capabilities(void) 737{ 738 struct wmab_args args; 739 struct wmab_ret ret; 740 acpi_status status; 741 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 742 union acpi_object *obj; 743 744 /* 745 * On laptops with this strange GUID (non Acer), normal probing doesn't 746 * work. 747 */ 748 if (wmi_has_guid(AMW0_GUID2)) { 749 if ((quirks != &quirk_unknown) || 750 !AMW0_set_cap_acpi_check_device()) 751 interface->capability |= ACER_CAP_WIRELESS; 752 return AE_OK; 753 } 754 755 args.eax = ACER_AMW0_WRITE; 756 args.ecx = args.edx = 0; 757 758 args.ebx = 0xa2 << 8; 759 args.ebx |= ACER_AMW0_WIRELESS_MASK; 760 761 status = wmab_execute(&args, &out); 762 if (ACPI_FAILURE(status)) 763 return status; 764 765 obj = out.pointer; 766 if (obj && obj->type == ACPI_TYPE_BUFFER && 767 obj->buffer.length == sizeof(struct wmab_ret)) { 768 ret = *((struct wmab_ret *) obj->buffer.pointer); 769 } else { 770 status = AE_ERROR; 771 goto out; 772 } 773 774 if (ret.eax & 0x1) 775 interface->capability |= ACER_CAP_WIRELESS; 776 777 args.ebx = 2 << 8; 778 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 779 780 /* 781 * It's ok to use existing buffer for next wmab_execute call. 782 * But we need to kfree(out.pointer) if next wmab_execute fail. 783 */ 784 status = wmab_execute(&args, &out); 785 if (ACPI_FAILURE(status)) 786 goto out; 787 788 obj = (union acpi_object *) out.pointer; 789 if (obj && obj->type == ACPI_TYPE_BUFFER 790 && obj->buffer.length == sizeof(struct wmab_ret)) { 791 ret = *((struct wmab_ret *) obj->buffer.pointer); 792 } else { 793 status = AE_ERROR; 794 goto out; 795 } 796 797 if (ret.eax & 0x1) 798 interface->capability |= ACER_CAP_BLUETOOTH; 799 800 /* 801 * This appears to be safe to enable, since all Wistron based laptops 802 * appear to use the same EC register for brightness, even if they 803 * differ for wireless, etc 804 */ 805 if (quirks->brightness >= 0) 806 interface->capability |= ACER_CAP_BRIGHTNESS; 807 808 status = AE_OK; 809out: 810 kfree(out.pointer); 811 return status; 812} 813 814static struct wmi_interface AMW0_interface = { 815 .type = ACER_AMW0, 816}; 817 818static struct wmi_interface AMW0_V2_interface = { 819 .type = ACER_AMW0_V2, 820}; 821 822/* 823 * New interface (The WMID interface) 824 */ 825static acpi_status 826WMI_execute_u32(u32 method_id, u32 in, u32 *out) 827{ 828 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 829 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 830 union acpi_object *obj; 831 u32 tmp; 832 acpi_status status; 833 834 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 835 836 if (ACPI_FAILURE(status)) 837 return status; 838 839 obj = (union acpi_object *) result.pointer; 840 if (obj && obj->type == ACPI_TYPE_BUFFER && 841 (obj->buffer.length == sizeof(u32) || 842 obj->buffer.length == sizeof(u64))) { 843 tmp = *((u32 *) obj->buffer.pointer); 844 } else if (obj->type == ACPI_TYPE_INTEGER) { 845 tmp = (u32) obj->integer.value; 846 } else { 847 tmp = 0; 848 } 849 850 if (out) 851 *out = tmp; 852 853 kfree(result.pointer); 854 855 return status; 856} 857 858static acpi_status WMID_get_u32(u32 *value, u32 cap) 859{ 860 acpi_status status; 861 u8 tmp; 862 u32 result, method_id = 0; 863 864 switch (cap) { 865 case ACER_CAP_WIRELESS: 866 method_id = ACER_WMID_GET_WIRELESS_METHODID; 867 break; 868 case ACER_CAP_BLUETOOTH: 869 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 870 break; 871 case ACER_CAP_BRIGHTNESS: 872 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 873 break; 874 case ACER_CAP_THREEG: 875 method_id = ACER_WMID_GET_THREEG_METHODID; 876 break; 877 case ACER_CAP_MAILLED: 878 if (quirks->mailled == 1) { 879 ec_read(0x9f, &tmp); 880 *value = tmp & 0x1; 881 return 0; 882 } 883 default: 884 return AE_ERROR; 885 } 886 status = WMI_execute_u32(method_id, 0, &result); 887 888 if (ACPI_SUCCESS(status)) 889 *value = (u8)result; 890 891 return status; 892} 893 894static acpi_status WMID_set_u32(u32 value, u32 cap) 895{ 896 u32 method_id = 0; 897 char param; 898 899 switch (cap) { 900 case ACER_CAP_BRIGHTNESS: 901 if (value > max_brightness) 902 return AE_BAD_PARAMETER; 903 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 904 break; 905 case ACER_CAP_WIRELESS: 906 if (value > 1) 907 return AE_BAD_PARAMETER; 908 method_id = ACER_WMID_SET_WIRELESS_METHODID; 909 break; 910 case ACER_CAP_BLUETOOTH: 911 if (value > 1) 912 return AE_BAD_PARAMETER; 913 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 914 break; 915 case ACER_CAP_THREEG: 916 if (value > 1) 917 return AE_BAD_PARAMETER; 918 method_id = ACER_WMID_SET_THREEG_METHODID; 919 break; 920 case ACER_CAP_MAILLED: 921 if (value > 1) 922 return AE_BAD_PARAMETER; 923 if (quirks->mailled == 1) { 924 param = value ? 0x92 : 0x93; 925 i8042_lock_chip(); 926 i8042_command(¶m, 0x1059); 927 i8042_unlock_chip(); 928 return 0; 929 } 930 break; 931 default: 932 return AE_ERROR; 933 } 934 return WMI_execute_u32(method_id, (u32)value, NULL); 935} 936 937static acpi_status wmid3_get_device_status(u32 *value, u16 device) 938{ 939 struct wmid3_gds_return_value return_value; 940 acpi_status status; 941 union acpi_object *obj; 942 struct wmid3_gds_get_input_param params = { 943 .function_num = 0x1, 944 .hotkey_number = commun_fn_key_number, 945 .devices = device, 946 }; 947 struct acpi_buffer input = { 948 sizeof(struct wmid3_gds_get_input_param), 949 ¶ms 950 }; 951 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 952 953 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 954 if (ACPI_FAILURE(status)) 955 return status; 956 957 obj = output.pointer; 958 959 if (!obj) 960 return AE_ERROR; 961 else if (obj->type != ACPI_TYPE_BUFFER) { 962 kfree(obj); 963 return AE_ERROR; 964 } 965 if (obj->buffer.length != 8) { 966 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 967 kfree(obj); 968 return AE_ERROR; 969 } 970 971 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 972 kfree(obj); 973 974 if (return_value.error_code || return_value.ec_return_value) 975 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n", 976 device, 977 return_value.error_code, 978 return_value.ec_return_value); 979 else 980 *value = !!(return_value.devices & device); 981 982 return status; 983} 984 985static acpi_status wmid_v2_get_u32(u32 *value, u32 cap) 986{ 987 u16 device; 988 989 switch (cap) { 990 case ACER_CAP_WIRELESS: 991 device = ACER_WMID3_GDS_WIRELESS; 992 break; 993 case ACER_CAP_BLUETOOTH: 994 device = ACER_WMID3_GDS_BLUETOOTH; 995 break; 996 case ACER_CAP_THREEG: 997 device = ACER_WMID3_GDS_THREEG; 998 break; 999 default: 1000 return AE_ERROR; 1001 } 1002 return wmid3_get_device_status(value, device); 1003} 1004 1005static acpi_status wmid3_set_device_status(u32 value, u16 device) 1006{ 1007 struct wmid3_gds_return_value return_value; 1008 acpi_status status; 1009 union acpi_object *obj; 1010 u16 devices; 1011 struct wmid3_gds_get_input_param get_params = { 1012 .function_num = 0x1, 1013 .hotkey_number = commun_fn_key_number, 1014 .devices = commun_func_bitmap, 1015 }; 1016 struct acpi_buffer get_input = { 1017 sizeof(struct wmid3_gds_get_input_param), 1018 &get_params 1019 }; 1020 struct wmid3_gds_set_input_param set_params = { 1021 .function_num = 0x2, 1022 .hotkey_number = commun_fn_key_number, 1023 .devices = commun_func_bitmap, 1024 }; 1025 struct acpi_buffer set_input = { 1026 sizeof(struct wmid3_gds_set_input_param), 1027 &set_params 1028 }; 1029 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1030 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL }; 1031 1032 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output); 1033 if (ACPI_FAILURE(status)) 1034 return status; 1035 1036 obj = output.pointer; 1037 1038 if (!obj) 1039 return AE_ERROR; 1040 else if (obj->type != ACPI_TYPE_BUFFER) { 1041 kfree(obj); 1042 return AE_ERROR; 1043 } 1044 if (obj->buffer.length != 8) { 1045 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1046 kfree(obj); 1047 return AE_ERROR; 1048 } 1049 1050 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1051 kfree(obj); 1052 1053 if (return_value.error_code || return_value.ec_return_value) { 1054 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n", 1055 return_value.error_code, 1056 return_value.ec_return_value); 1057 return status; 1058 } 1059 1060 devices = return_value.devices; 1061 set_params.devices = (value) ? (devices | device) : (devices & ~device); 1062 1063 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2); 1064 if (ACPI_FAILURE(status)) 1065 return status; 1066 1067 obj = output2.pointer; 1068 1069 if (!obj) 1070 return AE_ERROR; 1071 else if (obj->type != ACPI_TYPE_BUFFER) { 1072 kfree(obj); 1073 return AE_ERROR; 1074 } 1075 if (obj->buffer.length != 4) { 1076 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1077 kfree(obj); 1078 return AE_ERROR; 1079 } 1080 1081 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1082 kfree(obj); 1083 1084 if (return_value.error_code || return_value.ec_return_value) 1085 pr_warn("Set Device Status failed: 0x%x - 0x%x\n", 1086 return_value.error_code, 1087 return_value.ec_return_value); 1088 1089 return status; 1090} 1091 1092static acpi_status wmid_v2_set_u32(u32 value, u32 cap) 1093{ 1094 u16 device; 1095 1096 switch (cap) { 1097 case ACER_CAP_WIRELESS: 1098 device = ACER_WMID3_GDS_WIRELESS; 1099 break; 1100 case ACER_CAP_BLUETOOTH: 1101 device = ACER_WMID3_GDS_BLUETOOTH; 1102 break; 1103 case ACER_CAP_THREEG: 1104 device = ACER_WMID3_GDS_THREEG; 1105 break; 1106 default: 1107 return AE_ERROR; 1108 } 1109 return wmid3_set_device_status(value, device); 1110} 1111 1112static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 1113{ 1114 struct hotkey_function_type_aa *type_aa; 1115 1116 /* We are looking for OEM-specific Type AAh */ 1117 if (header->type != 0xAA) 1118 return; 1119 1120 has_type_aa = true; 1121 type_aa = (struct hotkey_function_type_aa *) header; 1122 1123 pr_info("Function bitmap for Communication Button: 0x%x\n", 1124 type_aa->commun_func_bitmap); 1125 commun_func_bitmap = type_aa->commun_func_bitmap; 1126 1127 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 1128 interface->capability |= ACER_CAP_WIRELESS; 1129 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 1130 interface->capability |= ACER_CAP_THREEG; 1131 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 1132 interface->capability |= ACER_CAP_BLUETOOTH; 1133 1134 commun_fn_key_number = type_aa->commun_fn_key_number; 1135} 1136 1137static acpi_status WMID_set_capabilities(void) 1138{ 1139 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1140 union acpi_object *obj; 1141 acpi_status status; 1142 u32 devices; 1143 1144 status = wmi_query_block(WMID_GUID2, 1, &out); 1145 if (ACPI_FAILURE(status)) 1146 return status; 1147 1148 obj = (union acpi_object *) out.pointer; 1149 if (obj && obj->type == ACPI_TYPE_BUFFER && 1150 (obj->buffer.length == sizeof(u32) || 1151 obj->buffer.length == sizeof(u64))) { 1152 devices = *((u32 *) obj->buffer.pointer); 1153 } else if (obj->type == ACPI_TYPE_INTEGER) { 1154 devices = (u32) obj->integer.value; 1155 } else { 1156 kfree(out.pointer); 1157 return AE_ERROR; 1158 } 1159 1160 pr_info("Function bitmap for Communication Device: 0x%x\n", devices); 1161 if (devices & 0x07) 1162 interface->capability |= ACER_CAP_WIRELESS; 1163 if (devices & 0x40) 1164 interface->capability |= ACER_CAP_THREEG; 1165 if (devices & 0x10) 1166 interface->capability |= ACER_CAP_BLUETOOTH; 1167 1168 if (!(devices & 0x20)) 1169 max_brightness = 0x9; 1170 1171 kfree(out.pointer); 1172 return status; 1173} 1174 1175static struct wmi_interface wmid_interface = { 1176 .type = ACER_WMID, 1177}; 1178 1179static struct wmi_interface wmid_v2_interface = { 1180 .type = ACER_WMID_v2, 1181}; 1182 1183/* 1184 * Generic Device (interface-independent) 1185 */ 1186 1187static acpi_status get_u32(u32 *value, u32 cap) 1188{ 1189 acpi_status status = AE_ERROR; 1190 1191 switch (interface->type) { 1192 case ACER_AMW0: 1193 status = AMW0_get_u32(value, cap); 1194 break; 1195 case ACER_AMW0_V2: 1196 if (cap == ACER_CAP_MAILLED) { 1197 status = AMW0_get_u32(value, cap); 1198 break; 1199 } 1200 case ACER_WMID: 1201 status = WMID_get_u32(value, cap); 1202 break; 1203 case ACER_WMID_v2: 1204 if (cap & (ACER_CAP_WIRELESS | 1205 ACER_CAP_BLUETOOTH | 1206 ACER_CAP_THREEG)) 1207 status = wmid_v2_get_u32(value, cap); 1208 else if (wmi_has_guid(WMID_GUID2)) 1209 status = WMID_get_u32(value, cap); 1210 break; 1211 } 1212 1213 return status; 1214} 1215 1216static acpi_status set_u32(u32 value, u32 cap) 1217{ 1218 acpi_status status; 1219 1220 if (interface->capability & cap) { 1221 switch (interface->type) { 1222 case ACER_AMW0: 1223 return AMW0_set_u32(value, cap); 1224 case ACER_AMW0_V2: 1225 if (cap == ACER_CAP_MAILLED) 1226 return AMW0_set_u32(value, cap); 1227 1228 /* 1229 * On some models, some WMID methods don't toggle 1230 * properly. For those cases, we want to run the AMW0 1231 * method afterwards to be certain we've really toggled 1232 * the device state. 1233 */ 1234 if (cap == ACER_CAP_WIRELESS || 1235 cap == ACER_CAP_BLUETOOTH) { 1236 status = WMID_set_u32(value, cap); 1237 if (ACPI_FAILURE(status)) 1238 return status; 1239 1240 return AMW0_set_u32(value, cap); 1241 } 1242 case ACER_WMID: 1243 return WMID_set_u32(value, cap); 1244 case ACER_WMID_v2: 1245 if (cap & (ACER_CAP_WIRELESS | 1246 ACER_CAP_BLUETOOTH | 1247 ACER_CAP_THREEG)) 1248 return wmid_v2_set_u32(value, cap); 1249 else if (wmi_has_guid(WMID_GUID2)) 1250 return WMID_set_u32(value, cap); 1251 default: 1252 return AE_BAD_PARAMETER; 1253 } 1254 } 1255 return AE_BAD_PARAMETER; 1256} 1257 1258static void __init acer_commandline_init(void) 1259{ 1260 /* 1261 * These will all fail silently if the value given is invalid, or the 1262 * capability isn't available on the given interface 1263 */ 1264 if (mailled >= 0) 1265 set_u32(mailled, ACER_CAP_MAILLED); 1266 if (!has_type_aa && threeg >= 0) 1267 set_u32(threeg, ACER_CAP_THREEG); 1268 if (brightness >= 0) 1269 set_u32(brightness, ACER_CAP_BRIGHTNESS); 1270} 1271 1272/* 1273 * LED device (Mail LED only, no other LEDs known yet) 1274 */ 1275static void mail_led_set(struct led_classdev *led_cdev, 1276enum led_brightness value) 1277{ 1278 set_u32(value, ACER_CAP_MAILLED); 1279} 1280 1281static struct led_classdev mail_led = { 1282 .name = "acer-wmi::mail", 1283 .brightness_set = mail_led_set, 1284}; 1285 1286static int __devinit acer_led_init(struct device *dev) 1287{ 1288 return led_classdev_register(dev, &mail_led); 1289} 1290 1291static void acer_led_exit(void) 1292{ 1293 set_u32(LED_OFF, ACER_CAP_MAILLED); 1294 led_classdev_unregister(&mail_led); 1295} 1296 1297/* 1298 * Backlight device 1299 */ 1300static struct backlight_device *acer_backlight_device; 1301 1302static int read_brightness(struct backlight_device *bd) 1303{ 1304 u32 value; 1305 get_u32(&value, ACER_CAP_BRIGHTNESS); 1306 return value; 1307} 1308 1309static int update_bl_status(struct backlight_device *bd) 1310{ 1311 int intensity = bd->props.brightness; 1312 1313 if (bd->props.power != FB_BLANK_UNBLANK) 1314 intensity = 0; 1315 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1316 intensity = 0; 1317 1318 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1319 1320 return 0; 1321} 1322 1323static const struct backlight_ops acer_bl_ops = { 1324 .get_brightness = read_brightness, 1325 .update_status = update_bl_status, 1326}; 1327 1328static int __devinit acer_backlight_init(struct device *dev) 1329{ 1330 struct backlight_properties props; 1331 struct backlight_device *bd; 1332 1333 memset(&props, 0, sizeof(struct backlight_properties)); 1334 props.type = BACKLIGHT_PLATFORM; 1335 props.max_brightness = max_brightness; 1336 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1337 &props); 1338 if (IS_ERR(bd)) { 1339 pr_err("Could not register Acer backlight device\n"); 1340 acer_backlight_device = NULL; 1341 return PTR_ERR(bd); 1342 } 1343 1344 acer_backlight_device = bd; 1345 1346 bd->props.power = FB_BLANK_UNBLANK; 1347 bd->props.brightness = read_brightness(bd); 1348 backlight_update_status(bd); 1349 return 0; 1350} 1351 1352static void acer_backlight_exit(void) 1353{ 1354 backlight_device_unregister(acer_backlight_device); 1355} 1356 1357/* 1358 * Rfkill devices 1359 */ 1360static void acer_rfkill_update(struct work_struct *ignored); 1361static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1362static void acer_rfkill_update(struct work_struct *ignored) 1363{ 1364 u32 state; 1365 acpi_status status; 1366 1367 if (has_cap(ACER_CAP_WIRELESS)) { 1368 status = get_u32(&state, ACER_CAP_WIRELESS); 1369 if (ACPI_SUCCESS(status)) { 1370 if (quirks->wireless == 3) 1371 rfkill_set_hw_state(wireless_rfkill, !state); 1372 else 1373 rfkill_set_sw_state(wireless_rfkill, !state); 1374 } 1375 } 1376 1377 if (has_cap(ACER_CAP_BLUETOOTH)) { 1378 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1379 if (ACPI_SUCCESS(status)) 1380 rfkill_set_sw_state(bluetooth_rfkill, !state); 1381 } 1382 1383 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1384 status = get_u32(&state, ACER_WMID3_GDS_THREEG); 1385 if (ACPI_SUCCESS(status)) 1386 rfkill_set_sw_state(threeg_rfkill, !state); 1387 } 1388 1389 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1390} 1391 1392static int acer_rfkill_set(void *data, bool blocked) 1393{ 1394 acpi_status status; 1395 u32 cap = (unsigned long)data; 1396 1397 if (rfkill_inited) { 1398 status = set_u32(!blocked, cap); 1399 if (ACPI_FAILURE(status)) 1400 return -ENODEV; 1401 } 1402 1403 return 0; 1404} 1405 1406static const struct rfkill_ops acer_rfkill_ops = { 1407 .set_block = acer_rfkill_set, 1408}; 1409 1410static struct rfkill *acer_rfkill_register(struct device *dev, 1411 enum rfkill_type type, 1412 char *name, u32 cap) 1413{ 1414 int err; 1415 struct rfkill *rfkill_dev; 1416 u32 state; 1417 acpi_status status; 1418 1419 rfkill_dev = rfkill_alloc(name, dev, type, 1420 &acer_rfkill_ops, 1421 (void *)(unsigned long)cap); 1422 if (!rfkill_dev) 1423 return ERR_PTR(-ENOMEM); 1424 1425 status = get_u32(&state, cap); 1426 1427 err = rfkill_register(rfkill_dev); 1428 if (err) { 1429 rfkill_destroy(rfkill_dev); 1430 return ERR_PTR(err); 1431 } 1432 1433 if (ACPI_SUCCESS(status)) 1434 rfkill_set_sw_state(rfkill_dev, !state); 1435 1436 return rfkill_dev; 1437} 1438 1439static int acer_rfkill_init(struct device *dev) 1440{ 1441 int err; 1442 1443 if (has_cap(ACER_CAP_WIRELESS)) { 1444 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1445 "acer-wireless", ACER_CAP_WIRELESS); 1446 if (IS_ERR(wireless_rfkill)) { 1447 err = PTR_ERR(wireless_rfkill); 1448 goto error_wireless; 1449 } 1450 } 1451 1452 if (has_cap(ACER_CAP_BLUETOOTH)) { 1453 bluetooth_rfkill = acer_rfkill_register(dev, 1454 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1455 ACER_CAP_BLUETOOTH); 1456 if (IS_ERR(bluetooth_rfkill)) { 1457 err = PTR_ERR(bluetooth_rfkill); 1458 goto error_bluetooth; 1459 } 1460 } 1461 1462 if (has_cap(ACER_CAP_THREEG)) { 1463 threeg_rfkill = acer_rfkill_register(dev, 1464 RFKILL_TYPE_WWAN, "acer-threeg", 1465 ACER_CAP_THREEG); 1466 if (IS_ERR(threeg_rfkill)) { 1467 err = PTR_ERR(threeg_rfkill); 1468 goto error_threeg; 1469 } 1470 } 1471 1472 rfkill_inited = true; 1473 1474 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1475 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1476 schedule_delayed_work(&acer_rfkill_work, 1477 round_jiffies_relative(HZ)); 1478 1479 return 0; 1480 1481error_threeg: 1482 if (has_cap(ACER_CAP_BLUETOOTH)) { 1483 rfkill_unregister(bluetooth_rfkill); 1484 rfkill_destroy(bluetooth_rfkill); 1485 } 1486error_bluetooth: 1487 if (has_cap(ACER_CAP_WIRELESS)) { 1488 rfkill_unregister(wireless_rfkill); 1489 rfkill_destroy(wireless_rfkill); 1490 } 1491error_wireless: 1492 return err; 1493} 1494 1495static void acer_rfkill_exit(void) 1496{ 1497 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1498 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1499 cancel_delayed_work_sync(&acer_rfkill_work); 1500 1501 if (has_cap(ACER_CAP_WIRELESS)) { 1502 rfkill_unregister(wireless_rfkill); 1503 rfkill_destroy(wireless_rfkill); 1504 } 1505 1506 if (has_cap(ACER_CAP_BLUETOOTH)) { 1507 rfkill_unregister(bluetooth_rfkill); 1508 rfkill_destroy(bluetooth_rfkill); 1509 } 1510 1511 if (has_cap(ACER_CAP_THREEG)) { 1512 rfkill_unregister(threeg_rfkill); 1513 rfkill_destroy(threeg_rfkill); 1514 } 1515 return; 1516} 1517 1518/* 1519 * sysfs interface 1520 */ 1521static ssize_t show_bool_threeg(struct device *dev, 1522 struct device_attribute *attr, char *buf) 1523{ 1524 u32 result; \ 1525 acpi_status status; 1526 1527 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1528 current->comm); 1529 status = get_u32(&result, ACER_CAP_THREEG); 1530 if (ACPI_SUCCESS(status)) 1531 return sprintf(buf, "%u\n", result); 1532 return sprintf(buf, "Read error\n"); 1533} 1534 1535static ssize_t set_bool_threeg(struct device *dev, 1536 struct device_attribute *attr, const char *buf, size_t count) 1537{ 1538 u32 tmp = simple_strtoul(buf, NULL, 10); 1539 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1540 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1541 current->comm); 1542 if (ACPI_FAILURE(status)) 1543 return -EINVAL; 1544 return count; 1545} 1546static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg, 1547 set_bool_threeg); 1548 1549static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1550 char *buf) 1551{ 1552 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n", 1553 current->comm); 1554 switch (interface->type) { 1555 case ACER_AMW0: 1556 return sprintf(buf, "AMW0\n"); 1557 case ACER_AMW0_V2: 1558 return sprintf(buf, "AMW0 v2\n"); 1559 case ACER_WMID: 1560 return sprintf(buf, "WMID\n"); 1561 case ACER_WMID_v2: 1562 return sprintf(buf, "WMID v2\n"); 1563 default: 1564 return sprintf(buf, "Error!\n"); 1565 } 1566} 1567 1568static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1569 1570static void acer_wmi_notify(u32 value, void *context) 1571{ 1572 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1573 union acpi_object *obj; 1574 struct event_return_value return_value; 1575 acpi_status status; 1576 u16 device_state; 1577 const struct key_entry *key; 1578 1579 status = wmi_get_event_data(value, &response); 1580 if (status != AE_OK) { 1581 pr_warn("bad event status 0x%x\n", status); 1582 return; 1583 } 1584 1585 obj = (union acpi_object *)response.pointer; 1586 1587 if (!obj) 1588 return; 1589 if (obj->type != ACPI_TYPE_BUFFER) { 1590 pr_warn("Unknown response received %d\n", obj->type); 1591 kfree(obj); 1592 return; 1593 } 1594 if (obj->buffer.length != 8) { 1595 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1596 kfree(obj); 1597 return; 1598 } 1599 1600 return_value = *((struct event_return_value *)obj->buffer.pointer); 1601 kfree(obj); 1602 1603 switch (return_value.function) { 1604 case WMID_HOTKEY_EVENT: 1605 device_state = return_value.device_state; 1606 pr_debug("device state: 0x%x\n", device_state); 1607 1608 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev, 1609 return_value.key_num); 1610 if (!key) { 1611 pr_warn("Unknown key number - 0x%x\n", 1612 return_value.key_num); 1613 } else { 1614 switch (key->keycode) { 1615 case KEY_WLAN: 1616 case KEY_BLUETOOTH: 1617 if (has_cap(ACER_CAP_WIRELESS)) 1618 rfkill_set_sw_state(wireless_rfkill, 1619 !(device_state & ACER_WMID3_GDS_WIRELESS)); 1620 if (has_cap(ACER_CAP_THREEG)) 1621 rfkill_set_sw_state(threeg_rfkill, 1622 !(device_state & ACER_WMID3_GDS_THREEG)); 1623 if (has_cap(ACER_CAP_BLUETOOTH)) 1624 rfkill_set_sw_state(bluetooth_rfkill, 1625 !(device_state & ACER_WMID3_GDS_BLUETOOTH)); 1626 break; 1627 } 1628 sparse_keymap_report_entry(acer_wmi_input_dev, key, 1629 1, true); 1630 } 1631 break; 1632 default: 1633 pr_warn("Unknown function number - %d - %d\n", 1634 return_value.function, return_value.key_num); 1635 break; 1636 } 1637} 1638 1639static acpi_status 1640wmid3_set_lm_mode(struct lm_input_params *params, 1641 struct lm_return_value *return_value) 1642{ 1643 acpi_status status; 1644 union acpi_object *obj; 1645 1646 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1647 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1648 1649 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1650 if (ACPI_FAILURE(status)) 1651 return status; 1652 1653 obj = output.pointer; 1654 1655 if (!obj) 1656 return AE_ERROR; 1657 else if (obj->type != ACPI_TYPE_BUFFER) { 1658 kfree(obj); 1659 return AE_ERROR; 1660 } 1661 if (obj->buffer.length != 4) { 1662 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1663 kfree(obj); 1664 return AE_ERROR; 1665 } 1666 1667 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1668 kfree(obj); 1669 1670 return status; 1671} 1672 1673static int acer_wmi_enable_ec_raw(void) 1674{ 1675 struct lm_return_value return_value; 1676 acpi_status status; 1677 struct lm_input_params params = { 1678 .function_num = 0x1, 1679 .commun_devices = 0xFFFF, 1680 .devices = 0xFFFF, 1681 .lm_status = 0x00, /* Launch Manager Deactive */ 1682 }; 1683 1684 status = wmid3_set_lm_mode(¶ms, &return_value); 1685 1686 if (return_value.error_code || return_value.ec_return_value) 1687 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n", 1688 return_value.error_code, 1689 return_value.ec_return_value); 1690 else 1691 pr_info("Enabled EC raw mode\n"); 1692 1693 return status; 1694} 1695 1696static int acer_wmi_enable_lm(void) 1697{ 1698 struct lm_return_value return_value; 1699 acpi_status status; 1700 struct lm_input_params params = { 1701 .function_num = 0x1, 1702 .commun_devices = 0xFFFF, 1703 .devices = 0xFFFF, 1704 .lm_status = 0x01, /* Launch Manager Active */ 1705 }; 1706 1707 status = wmid3_set_lm_mode(¶ms, &return_value); 1708 1709 if (return_value.error_code || return_value.ec_return_value) 1710 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n", 1711 return_value.error_code, 1712 return_value.ec_return_value); 1713 1714 return status; 1715} 1716 1717static int __init acer_wmi_input_setup(void) 1718{ 1719 acpi_status status; 1720 int err; 1721 1722 acer_wmi_input_dev = input_allocate_device(); 1723 if (!acer_wmi_input_dev) 1724 return -ENOMEM; 1725 1726 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1727 acer_wmi_input_dev->phys = "wmi/input0"; 1728 acer_wmi_input_dev->id.bustype = BUS_HOST; 1729 1730 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1731 if (err) 1732 goto err_free_dev; 1733 1734 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1735 acer_wmi_notify, NULL); 1736 if (ACPI_FAILURE(status)) { 1737 err = -EIO; 1738 goto err_free_keymap; 1739 } 1740 1741 err = input_register_device(acer_wmi_input_dev); 1742 if (err) 1743 goto err_uninstall_notifier; 1744 1745 return 0; 1746 1747err_uninstall_notifier: 1748 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1749err_free_keymap: 1750 sparse_keymap_free(acer_wmi_input_dev); 1751err_free_dev: 1752 input_free_device(acer_wmi_input_dev); 1753 return err; 1754} 1755 1756static void acer_wmi_input_destroy(void) 1757{ 1758 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1759 sparse_keymap_free(acer_wmi_input_dev); 1760 input_unregister_device(acer_wmi_input_dev); 1761} 1762 1763/* 1764 * debugfs functions 1765 */ 1766static u32 get_wmid_devices(void) 1767{ 1768 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1769 union acpi_object *obj; 1770 acpi_status status; 1771 u32 devices = 0; 1772 1773 status = wmi_query_block(WMID_GUID2, 1, &out); 1774 if (ACPI_FAILURE(status)) 1775 return 0; 1776 1777 obj = (union acpi_object *) out.pointer; 1778 if (obj && obj->type == ACPI_TYPE_BUFFER && 1779 (obj->buffer.length == sizeof(u32) || 1780 obj->buffer.length == sizeof(u64))) { 1781 devices = *((u32 *) obj->buffer.pointer); 1782 } else if (obj->type == ACPI_TYPE_INTEGER) { 1783 devices = (u32) obj->integer.value; 1784 } 1785 1786 kfree(out.pointer); 1787 return devices; 1788} 1789 1790/* 1791 * Platform device 1792 */ 1793static int __devinit acer_platform_probe(struct platform_device *device) 1794{ 1795 int err; 1796 1797 if (has_cap(ACER_CAP_MAILLED)) { 1798 err = acer_led_init(&device->dev); 1799 if (err) 1800 goto error_mailled; 1801 } 1802 1803 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1804 err = acer_backlight_init(&device->dev); 1805 if (err) 1806 goto error_brightness; 1807 } 1808 1809 err = acer_rfkill_init(&device->dev); 1810 if (err) 1811 goto error_rfkill; 1812 1813 return err; 1814 1815error_rfkill: 1816 if (has_cap(ACER_CAP_BRIGHTNESS)) 1817 acer_backlight_exit(); 1818error_brightness: 1819 if (has_cap(ACER_CAP_MAILLED)) 1820 acer_led_exit(); 1821error_mailled: 1822 return err; 1823} 1824 1825static int acer_platform_remove(struct platform_device *device) 1826{ 1827 if (has_cap(ACER_CAP_MAILLED)) 1828 acer_led_exit(); 1829 if (has_cap(ACER_CAP_BRIGHTNESS)) 1830 acer_backlight_exit(); 1831 1832 acer_rfkill_exit(); 1833 return 0; 1834} 1835 1836static int acer_platform_suspend(struct platform_device *dev, 1837pm_message_t state) 1838{ 1839 u32 value; 1840 struct acer_data *data = &interface->data; 1841 1842 if (!data) 1843 return -ENOMEM; 1844 1845 if (has_cap(ACER_CAP_MAILLED)) { 1846 get_u32(&value, ACER_CAP_MAILLED); 1847 set_u32(LED_OFF, ACER_CAP_MAILLED); 1848 data->mailled = value; 1849 } 1850 1851 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1852 get_u32(&value, ACER_CAP_BRIGHTNESS); 1853 data->brightness = value; 1854 } 1855 1856 return 0; 1857} 1858 1859static int acer_platform_resume(struct platform_device *device) 1860{ 1861 struct acer_data *data = &interface->data; 1862 1863 if (!data) 1864 return -ENOMEM; 1865 1866 if (has_cap(ACER_CAP_MAILLED)) 1867 set_u32(data->mailled, ACER_CAP_MAILLED); 1868 1869 if (has_cap(ACER_CAP_BRIGHTNESS)) 1870 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 1871 1872 return 0; 1873} 1874 1875static void acer_platform_shutdown(struct platform_device *device) 1876{ 1877 struct acer_data *data = &interface->data; 1878 1879 if (!data) 1880 return; 1881 1882 if (has_cap(ACER_CAP_MAILLED)) 1883 set_u32(LED_OFF, ACER_CAP_MAILLED); 1884} 1885 1886static struct platform_driver acer_platform_driver = { 1887 .driver = { 1888 .name = "acer-wmi", 1889 .owner = THIS_MODULE, 1890 }, 1891 .probe = acer_platform_probe, 1892 .remove = acer_platform_remove, 1893 .suspend = acer_platform_suspend, 1894 .resume = acer_platform_resume, 1895 .shutdown = acer_platform_shutdown, 1896}; 1897 1898static struct platform_device *acer_platform_device; 1899 1900static int remove_sysfs(struct platform_device *device) 1901{ 1902 if (has_cap(ACER_CAP_THREEG)) 1903 device_remove_file(&device->dev, &dev_attr_threeg); 1904 1905 device_remove_file(&device->dev, &dev_attr_interface); 1906 1907 return 0; 1908} 1909 1910static int create_sysfs(void) 1911{ 1912 int retval = -ENOMEM; 1913 1914 if (has_cap(ACER_CAP_THREEG)) { 1915 retval = device_create_file(&acer_platform_device->dev, 1916 &dev_attr_threeg); 1917 if (retval) 1918 goto error_sysfs; 1919 } 1920 1921 retval = device_create_file(&acer_platform_device->dev, 1922 &dev_attr_interface); 1923 if (retval) 1924 goto error_sysfs; 1925 1926 return 0; 1927 1928error_sysfs: 1929 remove_sysfs(acer_platform_device); 1930 return retval; 1931} 1932 1933static void remove_debugfs(void) 1934{ 1935 debugfs_remove(interface->debug.devices); 1936 debugfs_remove(interface->debug.root); 1937} 1938 1939static int create_debugfs(void) 1940{ 1941 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 1942 if (!interface->debug.root) { 1943 pr_err("Failed to create debugfs directory"); 1944 return -ENOMEM; 1945 } 1946 1947 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 1948 interface->debug.root, 1949 &interface->debug.wmid_devices); 1950 if (!interface->debug.devices) 1951 goto error_debugfs; 1952 1953 return 0; 1954 1955error_debugfs: 1956 remove_debugfs(); 1957 return -ENOMEM; 1958} 1959 1960static int __init acer_wmi_init(void) 1961{ 1962 int err; 1963 1964 pr_info("Acer Laptop ACPI-WMI Extras\n"); 1965 1966 if (dmi_check_system(acer_blacklist)) { 1967 pr_info("Blacklisted hardware detected - not loading\n"); 1968 return -ENODEV; 1969 } 1970 1971 find_quirks(); 1972 1973 /* 1974 * Detect which ACPI-WMI interface we're using. 1975 */ 1976 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1977 interface = &AMW0_V2_interface; 1978 1979 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1980 interface = &wmid_interface; 1981 1982 if (wmi_has_guid(WMID_GUID3)) 1983 interface = &wmid_v2_interface; 1984 1985 if (interface) 1986 dmi_walk(type_aa_dmi_decode, NULL); 1987 1988 if (wmi_has_guid(WMID_GUID2) && interface) { 1989 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) { 1990 pr_err("Unable to detect available WMID devices\n"); 1991 return -ENODEV; 1992 } 1993 /* WMID always provides brightness methods */ 1994 interface->capability |= ACER_CAP_BRIGHTNESS; 1995 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) { 1996 pr_err("No WMID device detection method found\n"); 1997 return -ENODEV; 1998 } 1999 2000 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 2001 interface = &AMW0_interface; 2002 2003 if (ACPI_FAILURE(AMW0_set_capabilities())) { 2004 pr_err("Unable to detect available AMW0 devices\n"); 2005 return -ENODEV; 2006 } 2007 } 2008 2009 if (wmi_has_guid(AMW0_GUID1)) 2010 AMW0_find_mailled(); 2011 2012 if (!interface) { 2013 pr_err("No or unsupported WMI interface, unable to load\n"); 2014 return -ENODEV; 2015 } 2016 2017 set_quirks(); 2018 2019 if (acpi_video_backlight_support()) { 2020 interface->capability &= ~ACER_CAP_BRIGHTNESS; 2021 pr_info("Brightness must be controlled by generic video driver\n"); 2022 } 2023 2024 if (wmi_has_guid(WMID_GUID3)) { 2025 if (ec_raw_mode) { 2026 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 2027 pr_err("Cannot enable EC raw mode\n"); 2028 return -ENODEV; 2029 } 2030 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 2031 pr_err("Cannot enable Launch Manager mode\n"); 2032 return -ENODEV; 2033 } 2034 } else if (ec_raw_mode) { 2035 pr_info("No WMID EC raw mode enable method\n"); 2036 } 2037 2038 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 2039 err = acer_wmi_input_setup(); 2040 if (err) 2041 return err; 2042 } 2043 2044 err = platform_driver_register(&acer_platform_driver); 2045 if (err) { 2046 pr_err("Unable to register platform driver\n"); 2047 goto error_platform_register; 2048 } 2049 2050 acer_platform_device = platform_device_alloc("acer-wmi", -1); 2051 if (!acer_platform_device) { 2052 err = -ENOMEM; 2053 goto error_device_alloc; 2054 } 2055 2056 err = platform_device_add(acer_platform_device); 2057 if (err) 2058 goto error_device_add; 2059 2060 err = create_sysfs(); 2061 if (err) 2062 goto error_create_sys; 2063 2064 if (wmi_has_guid(WMID_GUID2)) { 2065 interface->debug.wmid_devices = get_wmid_devices(); 2066 err = create_debugfs(); 2067 if (err) 2068 goto error_create_debugfs; 2069 } 2070 2071 /* Override any initial settings with values from the commandline */ 2072 acer_commandline_init(); 2073 2074 return 0; 2075 2076error_create_debugfs: 2077 remove_sysfs(acer_platform_device); 2078error_create_sys: 2079 platform_device_del(acer_platform_device); 2080error_device_add: 2081 platform_device_put(acer_platform_device); 2082error_device_alloc: 2083 platform_driver_unregister(&acer_platform_driver); 2084error_platform_register: 2085 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2086 acer_wmi_input_destroy(); 2087 2088 return err; 2089} 2090 2091static void __exit acer_wmi_exit(void) 2092{ 2093 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2094 acer_wmi_input_destroy(); 2095 2096 remove_sysfs(acer_platform_device); 2097 remove_debugfs(); 2098 platform_device_unregister(acer_platform_device); 2099 platform_driver_unregister(&acer_platform_driver); 2100 2101 pr_info("Acer Laptop WMI Extras unloaded\n"); 2102 return; 2103} 2104 2105module_init(acer_wmi_init); 2106module_exit(acer_wmi_exit); 2107