acer-wmi.c revision 15b956a0b5651bbb1217ec374fdd67291dabb2af
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_IGNORE, 0x41, {KEY_MUTE} }, 109 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} }, 110 {KE_IGNORE, 0x43, {KEY_NEXTSONG} }, 111 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} }, 112 {KE_IGNORE, 0x45, {KEY_STOP} }, 113 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} }, 114 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} }, 115 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} }, 116 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} }, 117 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} }, 118 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 119 {KE_IGNORE, 0x81, {KEY_SLEEP} }, 120 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */ 121 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} }, 122 {KE_END, 0} 123}; 124 125static struct input_dev *acer_wmi_input_dev; 126 127struct event_return_value { 128 u8 function; 129 u8 key_num; 130 u16 device_state; 131 u32 reserved; 132} __attribute__((packed)); 133 134/* 135 * GUID3 Get Device Status device flags 136 */ 137#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 138#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 139#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */ 140#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 141 142struct lm_input_params { 143 u8 function_num; /* Function Number */ 144 u16 commun_devices; /* Communication type devices default status */ 145 u16 devices; /* Other type devices default status */ 146 u8 lm_status; /* Launch Manager Status */ 147 u16 reserved; 148} __attribute__((packed)); 149 150struct lm_return_value { 151 u8 error_code; /* Error Code */ 152 u8 ec_return_value; /* EC Return Value */ 153 u16 reserved; 154} __attribute__((packed)); 155 156struct wmid3_gds_input_param { /* Get Device Status input parameter */ 157 u8 function_num; /* Function Number */ 158 u8 hotkey_number; /* Hotkey Number */ 159 u16 devices; /* Get Device */ 160} __attribute__((packed)); 161 162struct wmid3_gds_return_value { /* Get Device Status return value*/ 163 u8 error_code; /* Error Code */ 164 u8 ec_return_value; /* EC Return Value */ 165 u16 devices; /* Current Device Status */ 166 u32 reserved; 167} __attribute__((packed)); 168 169struct hotkey_function_type_aa { 170 u8 type; 171 u8 length; 172 u16 handle; 173 u16 commun_func_bitmap; 174} __attribute__((packed)); 175 176/* 177 * Interface capability flags 178 */ 179#define ACER_CAP_MAILLED (1<<0) 180#define ACER_CAP_WIRELESS (1<<1) 181#define ACER_CAP_BLUETOOTH (1<<2) 182#define ACER_CAP_BRIGHTNESS (1<<3) 183#define ACER_CAP_THREEG (1<<4) 184#define ACER_CAP_ANY (0xFFFFFFFF) 185 186/* 187 * Interface type flags 188 */ 189enum interface_flags { 190 ACER_AMW0, 191 ACER_AMW0_V2, 192 ACER_WMID, 193}; 194 195#define ACER_DEFAULT_WIRELESS 0 196#define ACER_DEFAULT_BLUETOOTH 0 197#define ACER_DEFAULT_MAILLED 0 198#define ACER_DEFAULT_THREEG 0 199 200static int max_brightness = 0xF; 201 202static int mailled = -1; 203static int brightness = -1; 204static int threeg = -1; 205static int force_series; 206static bool ec_raw_mode; 207static bool has_type_aa; 208 209module_param(mailled, int, 0444); 210module_param(brightness, int, 0444); 211module_param(threeg, int, 0444); 212module_param(force_series, int, 0444); 213module_param(ec_raw_mode, bool, 0444); 214MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 215MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 216MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 217MODULE_PARM_DESC(force_series, "Force a different laptop series"); 218MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 219 220struct acer_data { 221 int mailled; 222 int threeg; 223 int brightness; 224}; 225 226struct acer_debug { 227 struct dentry *root; 228 struct dentry *devices; 229 u32 wmid_devices; 230}; 231 232static struct rfkill *wireless_rfkill; 233static struct rfkill *bluetooth_rfkill; 234static struct rfkill *threeg_rfkill; 235static bool rfkill_inited; 236 237/* Each low-level interface must define at least some of the following */ 238struct wmi_interface { 239 /* The WMI device type */ 240 u32 type; 241 242 /* The capabilities this interface provides */ 243 u32 capability; 244 245 /* Private data for the current interface */ 246 struct acer_data data; 247 248 /* debugfs entries associated with this interface */ 249 struct acer_debug debug; 250}; 251 252/* The static interface pointer, points to the currently detected interface */ 253static struct wmi_interface *interface; 254 255/* 256 * Embedded Controller quirks 257 * Some laptops require us to directly access the EC to either enable or query 258 * features that are not available through WMI. 259 */ 260 261struct quirk_entry { 262 u8 wireless; 263 u8 mailled; 264 s8 brightness; 265 u8 bluetooth; 266}; 267 268static struct quirk_entry *quirks; 269 270static void set_quirks(void) 271{ 272 if (!interface) 273 return; 274 275 if (quirks->mailled) 276 interface->capability |= ACER_CAP_MAILLED; 277 278 if (quirks->brightness) 279 interface->capability |= ACER_CAP_BRIGHTNESS; 280} 281 282static int dmi_matched(const struct dmi_system_id *dmi) 283{ 284 quirks = dmi->driver_data; 285 return 1; 286} 287 288static struct quirk_entry quirk_unknown = { 289}; 290 291static struct quirk_entry quirk_acer_aspire_1520 = { 292 .brightness = -1, 293}; 294 295static struct quirk_entry quirk_acer_travelmate_2490 = { 296 .mailled = 1, 297}; 298 299/* This AMW0 laptop has no bluetooth */ 300static struct quirk_entry quirk_medion_md_98300 = { 301 .wireless = 1, 302}; 303 304static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 305 .wireless = 2, 306}; 307 308static struct quirk_entry quirk_lenovo_ideapad_s205 = { 309 .wireless = 3, 310}; 311 312/* The Aspire One has a dummy ACPI-WMI interface - disable it */ 313static struct dmi_system_id __devinitdata acer_blacklist[] = { 314 { 315 .ident = "Acer Aspire One (SSD)", 316 .matches = { 317 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 318 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 319 }, 320 }, 321 { 322 .ident = "Acer Aspire One (HDD)", 323 .matches = { 324 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 325 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 326 }, 327 }, 328 {} 329}; 330 331static struct dmi_system_id acer_quirks[] = { 332 { 333 .callback = dmi_matched, 334 .ident = "Acer Aspire 1360", 335 .matches = { 336 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 337 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 338 }, 339 .driver_data = &quirk_acer_aspire_1520, 340 }, 341 { 342 .callback = dmi_matched, 343 .ident = "Acer Aspire 1520", 344 .matches = { 345 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 346 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 347 }, 348 .driver_data = &quirk_acer_aspire_1520, 349 }, 350 { 351 .callback = dmi_matched, 352 .ident = "Acer Aspire 3100", 353 .matches = { 354 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 355 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 356 }, 357 .driver_data = &quirk_acer_travelmate_2490, 358 }, 359 { 360 .callback = dmi_matched, 361 .ident = "Acer Aspire 3610", 362 .matches = { 363 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 364 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 365 }, 366 .driver_data = &quirk_acer_travelmate_2490, 367 }, 368 { 369 .callback = dmi_matched, 370 .ident = "Acer Aspire 5100", 371 .matches = { 372 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 373 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 374 }, 375 .driver_data = &quirk_acer_travelmate_2490, 376 }, 377 { 378 .callback = dmi_matched, 379 .ident = "Acer Aspire 5610", 380 .matches = { 381 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 382 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 383 }, 384 .driver_data = &quirk_acer_travelmate_2490, 385 }, 386 { 387 .callback = dmi_matched, 388 .ident = "Acer Aspire 5630", 389 .matches = { 390 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 391 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 392 }, 393 .driver_data = &quirk_acer_travelmate_2490, 394 }, 395 { 396 .callback = dmi_matched, 397 .ident = "Acer Aspire 5650", 398 .matches = { 399 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 400 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 401 }, 402 .driver_data = &quirk_acer_travelmate_2490, 403 }, 404 { 405 .callback = dmi_matched, 406 .ident = "Acer Aspire 5680", 407 .matches = { 408 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 409 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 410 }, 411 .driver_data = &quirk_acer_travelmate_2490, 412 }, 413 { 414 .callback = dmi_matched, 415 .ident = "Acer Aspire 9110", 416 .matches = { 417 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 418 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 419 }, 420 .driver_data = &quirk_acer_travelmate_2490, 421 }, 422 { 423 .callback = dmi_matched, 424 .ident = "Acer TravelMate 2490", 425 .matches = { 426 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 427 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 428 }, 429 .driver_data = &quirk_acer_travelmate_2490, 430 }, 431 { 432 .callback = dmi_matched, 433 .ident = "Acer TravelMate 4200", 434 .matches = { 435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 436 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 437 }, 438 .driver_data = &quirk_acer_travelmate_2490, 439 }, 440 { 441 .callback = dmi_matched, 442 .ident = "Fujitsu Siemens Amilo Li 1718", 443 .matches = { 444 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 445 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 446 }, 447 .driver_data = &quirk_fujitsu_amilo_li_1718, 448 }, 449 { 450 .callback = dmi_matched, 451 .ident = "Medion MD 98300", 452 .matches = { 453 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 454 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 455 }, 456 .driver_data = &quirk_medion_md_98300, 457 }, 458 { 459 .callback = dmi_matched, 460 .ident = "Lenovo Ideapad S205", 461 .matches = { 462 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 463 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"), 464 }, 465 .driver_data = &quirk_lenovo_ideapad_s205, 466 }, 467 {} 468}; 469 470/* Find which quirks are needed for a particular vendor/ model pair */ 471static void find_quirks(void) 472{ 473 if (!force_series) { 474 dmi_check_system(acer_quirks); 475 } else if (force_series == 2490) { 476 quirks = &quirk_acer_travelmate_2490; 477 } 478 479 if (quirks == NULL) 480 quirks = &quirk_unknown; 481 482 set_quirks(); 483} 484 485/* 486 * General interface convenience methods 487 */ 488 489static bool has_cap(u32 cap) 490{ 491 if ((interface->capability & cap) != 0) 492 return 1; 493 494 return 0; 495} 496 497/* 498 * AMW0 (V1) interface 499 */ 500struct wmab_args { 501 u32 eax; 502 u32 ebx; 503 u32 ecx; 504 u32 edx; 505}; 506 507struct wmab_ret { 508 u32 eax; 509 u32 ebx; 510 u32 ecx; 511 u32 edx; 512 u32 eex; 513}; 514 515static acpi_status wmab_execute(struct wmab_args *regbuf, 516struct acpi_buffer *result) 517{ 518 struct acpi_buffer input; 519 acpi_status status; 520 input.length = sizeof(struct wmab_args); 521 input.pointer = (u8 *)regbuf; 522 523 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 524 525 return status; 526} 527 528static acpi_status AMW0_get_u32(u32 *value, u32 cap, 529struct wmi_interface *iface) 530{ 531 int err; 532 u8 result; 533 534 switch (cap) { 535 case ACER_CAP_MAILLED: 536 switch (quirks->mailled) { 537 default: 538 err = ec_read(0xA, &result); 539 if (err) 540 return AE_ERROR; 541 *value = (result >> 7) & 0x1; 542 return AE_OK; 543 } 544 break; 545 case ACER_CAP_WIRELESS: 546 switch (quirks->wireless) { 547 case 1: 548 err = ec_read(0x7B, &result); 549 if (err) 550 return AE_ERROR; 551 *value = result & 0x1; 552 return AE_OK; 553 case 2: 554 err = ec_read(0x71, &result); 555 if (err) 556 return AE_ERROR; 557 *value = result & 0x1; 558 return AE_OK; 559 case 3: 560 err = ec_read(0x78, &result); 561 if (err) 562 return AE_ERROR; 563 *value = result & 0x1; 564 return AE_OK; 565 default: 566 err = ec_read(0xA, &result); 567 if (err) 568 return AE_ERROR; 569 *value = (result >> 2) & 0x1; 570 return AE_OK; 571 } 572 break; 573 case ACER_CAP_BLUETOOTH: 574 switch (quirks->bluetooth) { 575 default: 576 err = ec_read(0xA, &result); 577 if (err) 578 return AE_ERROR; 579 *value = (result >> 4) & 0x1; 580 return AE_OK; 581 } 582 break; 583 case ACER_CAP_BRIGHTNESS: 584 switch (quirks->brightness) { 585 default: 586 err = ec_read(0x83, &result); 587 if (err) 588 return AE_ERROR; 589 *value = result; 590 return AE_OK; 591 } 592 break; 593 default: 594 return AE_ERROR; 595 } 596 return AE_OK; 597} 598 599static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 600{ 601 struct wmab_args args; 602 603 args.eax = ACER_AMW0_WRITE; 604 args.ebx = value ? (1<<8) : 0; 605 args.ecx = args.edx = 0; 606 607 switch (cap) { 608 case ACER_CAP_MAILLED: 609 if (value > 1) 610 return AE_BAD_PARAMETER; 611 args.ebx |= ACER_AMW0_MAILLED_MASK; 612 break; 613 case ACER_CAP_WIRELESS: 614 if (value > 1) 615 return AE_BAD_PARAMETER; 616 args.ebx |= ACER_AMW0_WIRELESS_MASK; 617 break; 618 case ACER_CAP_BLUETOOTH: 619 if (value > 1) 620 return AE_BAD_PARAMETER; 621 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 622 break; 623 case ACER_CAP_BRIGHTNESS: 624 if (value > max_brightness) 625 return AE_BAD_PARAMETER; 626 switch (quirks->brightness) { 627 default: 628 return ec_write(0x83, value); 629 break; 630 } 631 default: 632 return AE_ERROR; 633 } 634 635 /* Actually do the set */ 636 return wmab_execute(&args, NULL); 637} 638 639static acpi_status AMW0_find_mailled(void) 640{ 641 struct wmab_args args; 642 struct wmab_ret ret; 643 acpi_status status = AE_OK; 644 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 645 union acpi_object *obj; 646 647 args.eax = 0x86; 648 args.ebx = args.ecx = args.edx = 0; 649 650 status = wmab_execute(&args, &out); 651 if (ACPI_FAILURE(status)) 652 return status; 653 654 obj = (union acpi_object *) out.pointer; 655 if (obj && obj->type == ACPI_TYPE_BUFFER && 656 obj->buffer.length == sizeof(struct wmab_ret)) { 657 ret = *((struct wmab_ret *) obj->buffer.pointer); 658 } else { 659 kfree(out.pointer); 660 return AE_ERROR; 661 } 662 663 if (ret.eex & 0x1) 664 interface->capability |= ACER_CAP_MAILLED; 665 666 kfree(out.pointer); 667 668 return AE_OK; 669} 670 671static acpi_status AMW0_set_capabilities(void) 672{ 673 struct wmab_args args; 674 struct wmab_ret ret; 675 acpi_status status; 676 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 677 union acpi_object *obj; 678 679 /* 680 * On laptops with this strange GUID (non Acer), normal probing doesn't 681 * work. 682 */ 683 if (wmi_has_guid(AMW0_GUID2)) { 684 interface->capability |= ACER_CAP_WIRELESS; 685 return AE_OK; 686 } 687 688 args.eax = ACER_AMW0_WRITE; 689 args.ecx = args.edx = 0; 690 691 args.ebx = 0xa2 << 8; 692 args.ebx |= ACER_AMW0_WIRELESS_MASK; 693 694 status = wmab_execute(&args, &out); 695 if (ACPI_FAILURE(status)) 696 return status; 697 698 obj = out.pointer; 699 if (obj && obj->type == ACPI_TYPE_BUFFER && 700 obj->buffer.length == sizeof(struct wmab_ret)) { 701 ret = *((struct wmab_ret *) obj->buffer.pointer); 702 } else { 703 status = AE_ERROR; 704 goto out; 705 } 706 707 if (ret.eax & 0x1) 708 interface->capability |= ACER_CAP_WIRELESS; 709 710 args.ebx = 2 << 8; 711 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 712 713 /* 714 * It's ok to use existing buffer for next wmab_execute call. 715 * But we need to kfree(out.pointer) if next wmab_execute fail. 716 */ 717 status = wmab_execute(&args, &out); 718 if (ACPI_FAILURE(status)) 719 goto out; 720 721 obj = (union acpi_object *) out.pointer; 722 if (obj && obj->type == ACPI_TYPE_BUFFER 723 && obj->buffer.length == sizeof(struct wmab_ret)) { 724 ret = *((struct wmab_ret *) obj->buffer.pointer); 725 } else { 726 status = AE_ERROR; 727 goto out; 728 } 729 730 if (ret.eax & 0x1) 731 interface->capability |= ACER_CAP_BLUETOOTH; 732 733 /* 734 * This appears to be safe to enable, since all Wistron based laptops 735 * appear to use the same EC register for brightness, even if they 736 * differ for wireless, etc 737 */ 738 if (quirks->brightness >= 0) 739 interface->capability |= ACER_CAP_BRIGHTNESS; 740 741 status = AE_OK; 742out: 743 kfree(out.pointer); 744 return status; 745} 746 747static struct wmi_interface AMW0_interface = { 748 .type = ACER_AMW0, 749}; 750 751static struct wmi_interface AMW0_V2_interface = { 752 .type = ACER_AMW0_V2, 753}; 754 755/* 756 * New interface (The WMID interface) 757 */ 758static acpi_status 759WMI_execute_u32(u32 method_id, u32 in, u32 *out) 760{ 761 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 762 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 763 union acpi_object *obj; 764 u32 tmp; 765 acpi_status status; 766 767 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 768 769 if (ACPI_FAILURE(status)) 770 return status; 771 772 obj = (union acpi_object *) result.pointer; 773 if (obj && obj->type == ACPI_TYPE_BUFFER && 774 (obj->buffer.length == sizeof(u32) || 775 obj->buffer.length == sizeof(u64))) { 776 tmp = *((u32 *) obj->buffer.pointer); 777 } else if (obj->type == ACPI_TYPE_INTEGER) { 778 tmp = (u32) obj->integer.value; 779 } else { 780 tmp = 0; 781 } 782 783 if (out) 784 *out = tmp; 785 786 kfree(result.pointer); 787 788 return status; 789} 790 791static acpi_status WMID_get_u32(u32 *value, u32 cap, 792struct wmi_interface *iface) 793{ 794 acpi_status status; 795 u8 tmp; 796 u32 result, method_id = 0; 797 798 switch (cap) { 799 case ACER_CAP_WIRELESS: 800 method_id = ACER_WMID_GET_WIRELESS_METHODID; 801 break; 802 case ACER_CAP_BLUETOOTH: 803 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 804 break; 805 case ACER_CAP_BRIGHTNESS: 806 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 807 break; 808 case ACER_CAP_THREEG: 809 method_id = ACER_WMID_GET_THREEG_METHODID; 810 break; 811 case ACER_CAP_MAILLED: 812 if (quirks->mailled == 1) { 813 ec_read(0x9f, &tmp); 814 *value = tmp & 0x1; 815 return 0; 816 } 817 default: 818 return AE_ERROR; 819 } 820 status = WMI_execute_u32(method_id, 0, &result); 821 822 if (ACPI_SUCCESS(status)) 823 *value = (u8)result; 824 825 return status; 826} 827 828static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 829{ 830 u32 method_id = 0; 831 char param; 832 833 switch (cap) { 834 case ACER_CAP_BRIGHTNESS: 835 if (value > max_brightness) 836 return AE_BAD_PARAMETER; 837 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 838 break; 839 case ACER_CAP_WIRELESS: 840 if (value > 1) 841 return AE_BAD_PARAMETER; 842 method_id = ACER_WMID_SET_WIRELESS_METHODID; 843 break; 844 case ACER_CAP_BLUETOOTH: 845 if (value > 1) 846 return AE_BAD_PARAMETER; 847 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 848 break; 849 case ACER_CAP_THREEG: 850 if (value > 1) 851 return AE_BAD_PARAMETER; 852 method_id = ACER_WMID_SET_THREEG_METHODID; 853 break; 854 case ACER_CAP_MAILLED: 855 if (value > 1) 856 return AE_BAD_PARAMETER; 857 if (quirks->mailled == 1) { 858 param = value ? 0x92 : 0x93; 859 i8042_lock_chip(); 860 i8042_command(¶m, 0x1059); 861 i8042_unlock_chip(); 862 return 0; 863 } 864 break; 865 default: 866 return AE_ERROR; 867 } 868 return WMI_execute_u32(method_id, (u32)value, NULL); 869} 870 871static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 872{ 873 struct hotkey_function_type_aa *type_aa; 874 875 /* We are looking for OEM-specific Type AAh */ 876 if (header->type != 0xAA) 877 return; 878 879 has_type_aa = true; 880 type_aa = (struct hotkey_function_type_aa *) header; 881 882 pr_info("Function bitmap for Communication Button: 0x%x\n", 883 type_aa->commun_func_bitmap); 884 885 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 886 interface->capability |= ACER_CAP_WIRELESS; 887 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 888 interface->capability |= ACER_CAP_THREEG; 889 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 890 interface->capability |= ACER_CAP_BLUETOOTH; 891} 892 893static acpi_status WMID_set_capabilities(void) 894{ 895 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 896 union acpi_object *obj; 897 acpi_status status; 898 u32 devices; 899 900 status = wmi_query_block(WMID_GUID2, 1, &out); 901 if (ACPI_FAILURE(status)) 902 return status; 903 904 obj = (union acpi_object *) out.pointer; 905 if (obj && obj->type == ACPI_TYPE_BUFFER && 906 (obj->buffer.length == sizeof(u32) || 907 obj->buffer.length == sizeof(u64))) { 908 devices = *((u32 *) obj->buffer.pointer); 909 } else if (obj->type == ACPI_TYPE_INTEGER) { 910 devices = (u32) obj->integer.value; 911 } else { 912 kfree(out.pointer); 913 return AE_ERROR; 914 } 915 916 dmi_walk(type_aa_dmi_decode, NULL); 917 if (!has_type_aa) { 918 interface->capability |= ACER_CAP_WIRELESS; 919 if (devices & 0x40) 920 interface->capability |= ACER_CAP_THREEG; 921 if (devices & 0x10) 922 interface->capability |= ACER_CAP_BLUETOOTH; 923 } 924 925 /* WMID always provides brightness methods */ 926 interface->capability |= ACER_CAP_BRIGHTNESS; 927 928 if (!(devices & 0x20)) 929 max_brightness = 0x9; 930 931 kfree(out.pointer); 932 return status; 933} 934 935static struct wmi_interface wmid_interface = { 936 .type = ACER_WMID, 937}; 938 939/* 940 * Generic Device (interface-independent) 941 */ 942 943static acpi_status get_u32(u32 *value, u32 cap) 944{ 945 acpi_status status = AE_ERROR; 946 947 switch (interface->type) { 948 case ACER_AMW0: 949 status = AMW0_get_u32(value, cap, interface); 950 break; 951 case ACER_AMW0_V2: 952 if (cap == ACER_CAP_MAILLED) { 953 status = AMW0_get_u32(value, cap, interface); 954 break; 955 } 956 case ACER_WMID: 957 status = WMID_get_u32(value, cap, interface); 958 break; 959 } 960 961 return status; 962} 963 964static acpi_status set_u32(u32 value, u32 cap) 965{ 966 acpi_status status; 967 968 if (interface->capability & cap) { 969 switch (interface->type) { 970 case ACER_AMW0: 971 return AMW0_set_u32(value, cap, interface); 972 case ACER_AMW0_V2: 973 if (cap == ACER_CAP_MAILLED) 974 return AMW0_set_u32(value, cap, interface); 975 976 /* 977 * On some models, some WMID methods don't toggle 978 * properly. For those cases, we want to run the AMW0 979 * method afterwards to be certain we've really toggled 980 * the device state. 981 */ 982 if (cap == ACER_CAP_WIRELESS || 983 cap == ACER_CAP_BLUETOOTH) { 984 status = WMID_set_u32(value, cap, interface); 985 if (ACPI_FAILURE(status)) 986 return status; 987 988 return AMW0_set_u32(value, cap, interface); 989 } 990 case ACER_WMID: 991 return WMID_set_u32(value, cap, interface); 992 default: 993 return AE_BAD_PARAMETER; 994 } 995 } 996 return AE_BAD_PARAMETER; 997} 998 999static void __init acer_commandline_init(void) 1000{ 1001 /* 1002 * These will all fail silently if the value given is invalid, or the 1003 * capability isn't available on the given interface 1004 */ 1005 if (mailled >= 0) 1006 set_u32(mailled, ACER_CAP_MAILLED); 1007 if (!has_type_aa && threeg >= 0) 1008 set_u32(threeg, ACER_CAP_THREEG); 1009 if (brightness >= 0) 1010 set_u32(brightness, ACER_CAP_BRIGHTNESS); 1011} 1012 1013/* 1014 * LED device (Mail LED only, no other LEDs known yet) 1015 */ 1016static void mail_led_set(struct led_classdev *led_cdev, 1017enum led_brightness value) 1018{ 1019 set_u32(value, ACER_CAP_MAILLED); 1020} 1021 1022static struct led_classdev mail_led = { 1023 .name = "acer-wmi::mail", 1024 .brightness_set = mail_led_set, 1025}; 1026 1027static int __devinit acer_led_init(struct device *dev) 1028{ 1029 return led_classdev_register(dev, &mail_led); 1030} 1031 1032static void acer_led_exit(void) 1033{ 1034 set_u32(LED_OFF, ACER_CAP_MAILLED); 1035 led_classdev_unregister(&mail_led); 1036} 1037 1038/* 1039 * Backlight device 1040 */ 1041static struct backlight_device *acer_backlight_device; 1042 1043static int read_brightness(struct backlight_device *bd) 1044{ 1045 u32 value; 1046 get_u32(&value, ACER_CAP_BRIGHTNESS); 1047 return value; 1048} 1049 1050static int update_bl_status(struct backlight_device *bd) 1051{ 1052 int intensity = bd->props.brightness; 1053 1054 if (bd->props.power != FB_BLANK_UNBLANK) 1055 intensity = 0; 1056 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1057 intensity = 0; 1058 1059 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1060 1061 return 0; 1062} 1063 1064static const struct backlight_ops acer_bl_ops = { 1065 .get_brightness = read_brightness, 1066 .update_status = update_bl_status, 1067}; 1068 1069static int __devinit acer_backlight_init(struct device *dev) 1070{ 1071 struct backlight_properties props; 1072 struct backlight_device *bd; 1073 1074 memset(&props, 0, sizeof(struct backlight_properties)); 1075 props.type = BACKLIGHT_PLATFORM; 1076 props.max_brightness = max_brightness; 1077 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1078 &props); 1079 if (IS_ERR(bd)) { 1080 pr_err("Could not register Acer backlight device\n"); 1081 acer_backlight_device = NULL; 1082 return PTR_ERR(bd); 1083 } 1084 1085 acer_backlight_device = bd; 1086 1087 bd->props.power = FB_BLANK_UNBLANK; 1088 bd->props.brightness = read_brightness(bd); 1089 backlight_update_status(bd); 1090 return 0; 1091} 1092 1093static void acer_backlight_exit(void) 1094{ 1095 backlight_device_unregister(acer_backlight_device); 1096} 1097 1098static acpi_status wmid3_get_device_status(u32 *value, u16 device) 1099{ 1100 struct wmid3_gds_return_value return_value; 1101 acpi_status status; 1102 union acpi_object *obj; 1103 struct wmid3_gds_input_param params = { 1104 .function_num = 0x1, 1105 .hotkey_number = 0x01, 1106 .devices = device, 1107 }; 1108 struct acpi_buffer input = { 1109 sizeof(struct wmid3_gds_input_param), 1110 ¶ms 1111 }; 1112 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1113 1114 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 1115 if (ACPI_FAILURE(status)) 1116 return status; 1117 1118 obj = output.pointer; 1119 1120 if (!obj) 1121 return AE_ERROR; 1122 else if (obj->type != ACPI_TYPE_BUFFER) { 1123 kfree(obj); 1124 return AE_ERROR; 1125 } 1126 if (obj->buffer.length != 8) { 1127 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1128 kfree(obj); 1129 return AE_ERROR; 1130 } 1131 1132 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1133 kfree(obj); 1134 1135 if (return_value.error_code || return_value.ec_return_value) 1136 pr_warn("Get Device Status failed: 0x%x - 0x%x\n", 1137 return_value.error_code, 1138 return_value.ec_return_value); 1139 else 1140 *value = !!(return_value.devices & device); 1141 1142 return status; 1143} 1144 1145static acpi_status get_device_status(u32 *value, u32 cap) 1146{ 1147 if (wmi_has_guid(WMID_GUID3)) { 1148 u16 device; 1149 1150 switch (cap) { 1151 case ACER_CAP_WIRELESS: 1152 device = ACER_WMID3_GDS_WIRELESS; 1153 break; 1154 case ACER_CAP_BLUETOOTH: 1155 device = ACER_WMID3_GDS_BLUETOOTH; 1156 break; 1157 case ACER_CAP_THREEG: 1158 device = ACER_WMID3_GDS_THREEG; 1159 break; 1160 default: 1161 return AE_ERROR; 1162 } 1163 return wmid3_get_device_status(value, device); 1164 1165 } else { 1166 return get_u32(value, cap); 1167 } 1168} 1169 1170static acpi_status wmid3_set_device_status(u32 value, u16 device) 1171{ 1172 struct wmid3_gds_return_value return_value; 1173 acpi_status status; 1174 union acpi_object *obj; 1175 u16 devices; 1176 struct wmid3_gds_input_param params = { 1177 .function_num = 0x1, 1178 .hotkey_number = 0x01, 1179 .devices = ACER_WMID3_GDS_WIRELESS | 1180 ACER_WMID3_GDS_THREEG | 1181 ACER_WMID3_GDS_WIMAX | 1182 ACER_WMID3_GDS_BLUETOOTH, 1183 }; 1184 struct acpi_buffer input = { 1185 sizeof(struct wmid3_gds_input_param), 1186 ¶ms 1187 }; 1188 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1189 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL }; 1190 1191 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 1192 if (ACPI_FAILURE(status)) 1193 return status; 1194 1195 obj = output.pointer; 1196 1197 if (!obj) 1198 return AE_ERROR; 1199 else if (obj->type != ACPI_TYPE_BUFFER) { 1200 kfree(obj); 1201 return AE_ERROR; 1202 } 1203 if (obj->buffer.length != 8) { 1204 pr_warning("Unknown buffer length %d\n", obj->buffer.length); 1205 kfree(obj); 1206 return AE_ERROR; 1207 } 1208 1209 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1210 kfree(obj); 1211 1212 if (return_value.error_code || return_value.ec_return_value) { 1213 pr_warning("Get Current Device Status failed: " 1214 "0x%x - 0x%x\n", return_value.error_code, 1215 return_value.ec_return_value); 1216 return status; 1217 } 1218 1219 devices = return_value.devices; 1220 params.function_num = 0x2; 1221 params.hotkey_number = 0x01; 1222 params.devices = (value) ? (devices | device) : (devices & ~device); 1223 1224 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2); 1225 if (ACPI_FAILURE(status)) 1226 return status; 1227 1228 obj = output2.pointer; 1229 1230 if (!obj) 1231 return AE_ERROR; 1232 else if (obj->type != ACPI_TYPE_BUFFER) { 1233 kfree(obj); 1234 return AE_ERROR; 1235 } 1236 if (obj->buffer.length != 4) { 1237 pr_warning("Unknown buffer length %d\n", obj->buffer.length); 1238 kfree(obj); 1239 return AE_ERROR; 1240 } 1241 1242 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1243 kfree(obj); 1244 1245 if (return_value.error_code || return_value.ec_return_value) 1246 pr_warning("Set Device Status failed: " 1247 "0x%x - 0x%x\n", return_value.error_code, 1248 return_value.ec_return_value); 1249 1250 return status; 1251} 1252 1253static acpi_status set_device_status(u32 value, u32 cap) 1254{ 1255 if (wmi_has_guid(WMID_GUID3)) { 1256 u16 device; 1257 1258 switch (cap) { 1259 case ACER_CAP_WIRELESS: 1260 device = ACER_WMID3_GDS_WIRELESS; 1261 break; 1262 case ACER_CAP_BLUETOOTH: 1263 device = ACER_WMID3_GDS_BLUETOOTH; 1264 break; 1265 case ACER_CAP_THREEG: 1266 device = ACER_WMID3_GDS_THREEG; 1267 break; 1268 default: 1269 return AE_ERROR; 1270 } 1271 return wmid3_set_device_status(value, device); 1272 1273 } else { 1274 return set_u32(value, cap); 1275 } 1276} 1277 1278/* 1279 * Rfkill devices 1280 */ 1281static void acer_rfkill_update(struct work_struct *ignored); 1282static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1283static void acer_rfkill_update(struct work_struct *ignored) 1284{ 1285 u32 state; 1286 acpi_status status; 1287 1288 status = get_u32(&state, ACER_CAP_WIRELESS); 1289 if (ACPI_SUCCESS(status)) { 1290 if (quirks->wireless == 3) { 1291 rfkill_set_hw_state(wireless_rfkill, !state); 1292 } else { 1293 rfkill_set_sw_state(wireless_rfkill, !state); 1294 } 1295 } 1296 1297 if (has_cap(ACER_CAP_BLUETOOTH)) { 1298 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1299 if (ACPI_SUCCESS(status)) 1300 rfkill_set_sw_state(bluetooth_rfkill, !state); 1301 } 1302 1303 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1304 status = wmid3_get_device_status(&state, 1305 ACER_WMID3_GDS_THREEG); 1306 if (ACPI_SUCCESS(status)) 1307 rfkill_set_sw_state(threeg_rfkill, !state); 1308 } 1309 1310 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1311} 1312 1313static int acer_rfkill_set(void *data, bool blocked) 1314{ 1315 acpi_status status; 1316 u32 cap = (unsigned long)data; 1317 1318 if (rfkill_inited) { 1319 status = set_device_status(!blocked, cap); 1320 if (ACPI_FAILURE(status)) 1321 return -ENODEV; 1322 } 1323 1324 return 0; 1325} 1326 1327static const struct rfkill_ops acer_rfkill_ops = { 1328 .set_block = acer_rfkill_set, 1329}; 1330 1331static struct rfkill *acer_rfkill_register(struct device *dev, 1332 enum rfkill_type type, 1333 char *name, u32 cap) 1334{ 1335 int err; 1336 struct rfkill *rfkill_dev; 1337 u32 state; 1338 acpi_status status; 1339 1340 rfkill_dev = rfkill_alloc(name, dev, type, 1341 &acer_rfkill_ops, 1342 (void *)(unsigned long)cap); 1343 if (!rfkill_dev) 1344 return ERR_PTR(-ENOMEM); 1345 1346 status = get_device_status(&state, cap); 1347 1348 err = rfkill_register(rfkill_dev); 1349 if (err) { 1350 rfkill_destroy(rfkill_dev); 1351 return ERR_PTR(err); 1352 } 1353 1354 if (ACPI_SUCCESS(status)) 1355 rfkill_set_sw_state(rfkill_dev, !state); 1356 1357 return rfkill_dev; 1358} 1359 1360static int acer_rfkill_init(struct device *dev) 1361{ 1362 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1363 "acer-wireless", ACER_CAP_WIRELESS); 1364 if (IS_ERR(wireless_rfkill)) 1365 return PTR_ERR(wireless_rfkill); 1366 1367 if (has_cap(ACER_CAP_BLUETOOTH)) { 1368 bluetooth_rfkill = acer_rfkill_register(dev, 1369 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1370 ACER_CAP_BLUETOOTH); 1371 if (IS_ERR(bluetooth_rfkill)) { 1372 rfkill_unregister(wireless_rfkill); 1373 rfkill_destroy(wireless_rfkill); 1374 return PTR_ERR(bluetooth_rfkill); 1375 } 1376 } 1377 1378 if (has_cap(ACER_CAP_THREEG)) { 1379 threeg_rfkill = acer_rfkill_register(dev, 1380 RFKILL_TYPE_WWAN, "acer-threeg", 1381 ACER_CAP_THREEG); 1382 if (IS_ERR(threeg_rfkill)) { 1383 rfkill_unregister(wireless_rfkill); 1384 rfkill_destroy(wireless_rfkill); 1385 rfkill_unregister(bluetooth_rfkill); 1386 rfkill_destroy(bluetooth_rfkill); 1387 return PTR_ERR(threeg_rfkill); 1388 } 1389 } 1390 1391 rfkill_inited = true; 1392 1393 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) 1394 schedule_delayed_work(&acer_rfkill_work, 1395 round_jiffies_relative(HZ)); 1396 1397 return 0; 1398} 1399 1400static void acer_rfkill_exit(void) 1401{ 1402 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) 1403 cancel_delayed_work_sync(&acer_rfkill_work); 1404 1405 rfkill_unregister(wireless_rfkill); 1406 rfkill_destroy(wireless_rfkill); 1407 1408 if (has_cap(ACER_CAP_BLUETOOTH)) { 1409 rfkill_unregister(bluetooth_rfkill); 1410 rfkill_destroy(bluetooth_rfkill); 1411 } 1412 1413 if (has_cap(ACER_CAP_THREEG)) { 1414 rfkill_unregister(threeg_rfkill); 1415 rfkill_destroy(threeg_rfkill); 1416 } 1417 return; 1418} 1419 1420/* 1421 * sysfs interface 1422 */ 1423static ssize_t show_bool_threeg(struct device *dev, 1424 struct device_attribute *attr, char *buf) 1425{ 1426 u32 result; \ 1427 acpi_status status; 1428 1429 pr_info("This threeg sysfs will be removed in 2012" 1430 " - used by: %s\n", current->comm); 1431 if (wmi_has_guid(WMID_GUID3)) 1432 status = wmid3_get_device_status(&result, 1433 ACER_WMID3_GDS_THREEG); 1434 else 1435 status = get_u32(&result, ACER_CAP_THREEG); 1436 if (ACPI_SUCCESS(status)) 1437 return sprintf(buf, "%u\n", result); 1438 return sprintf(buf, "Read error\n"); 1439} 1440 1441static ssize_t set_bool_threeg(struct device *dev, 1442 struct device_attribute *attr, const char *buf, size_t count) 1443{ 1444 u32 tmp = simple_strtoul(buf, NULL, 10); 1445 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1446 pr_info("This threeg sysfs will be removed in 2012" 1447 " - used by: %s\n", current->comm); 1448 if (ACPI_FAILURE(status)) 1449 return -EINVAL; 1450 return count; 1451} 1452static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg, 1453 set_bool_threeg); 1454 1455static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1456 char *buf) 1457{ 1458 pr_info("This interface sysfs will be removed in 2012" 1459 " - used by: %s\n", current->comm); 1460 switch (interface->type) { 1461 case ACER_AMW0: 1462 return sprintf(buf, "AMW0\n"); 1463 case ACER_AMW0_V2: 1464 return sprintf(buf, "AMW0 v2\n"); 1465 case ACER_WMID: 1466 return sprintf(buf, "WMID\n"); 1467 default: 1468 return sprintf(buf, "Error!\n"); 1469 } 1470} 1471 1472static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1473 1474static void acer_wmi_notify(u32 value, void *context) 1475{ 1476 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1477 union acpi_object *obj; 1478 struct event_return_value return_value; 1479 acpi_status status; 1480 u16 device_state; 1481 const struct key_entry *key; 1482 1483 status = wmi_get_event_data(value, &response); 1484 if (status != AE_OK) { 1485 pr_warn("bad event status 0x%x\n", status); 1486 return; 1487 } 1488 1489 obj = (union acpi_object *)response.pointer; 1490 1491 if (!obj) 1492 return; 1493 if (obj->type != ACPI_TYPE_BUFFER) { 1494 pr_warn("Unknown response received %d\n", obj->type); 1495 kfree(obj); 1496 return; 1497 } 1498 if (obj->buffer.length != 8) { 1499 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1500 kfree(obj); 1501 return; 1502 } 1503 1504 return_value = *((struct event_return_value *)obj->buffer.pointer); 1505 kfree(obj); 1506 1507 switch (return_value.function) { 1508 case WMID_HOTKEY_EVENT: 1509 device_state = return_value.device_state; 1510 pr_debug("device state: 0x%x\n", device_state); 1511 1512 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev, 1513 return_value.key_num); 1514 if (!key) { 1515 pr_warn("Unknown key number - 0x%x\n", 1516 return_value.key_num); 1517 } else { 1518 switch (key->keycode) { 1519 case KEY_WLAN: 1520 case KEY_BLUETOOTH: 1521 if (has_cap(ACER_CAP_WIRELESS)) 1522 rfkill_set_sw_state(wireless_rfkill, 1523 !(device_state & ACER_WMID3_GDS_WIRELESS)); 1524 if (has_cap(ACER_CAP_THREEG)) 1525 rfkill_set_sw_state(threeg_rfkill, 1526 !(device_state & ACER_WMID3_GDS_THREEG)); 1527 if (has_cap(ACER_CAP_BLUETOOTH)) 1528 rfkill_set_sw_state(bluetooth_rfkill, 1529 !(device_state & ACER_WMID3_GDS_BLUETOOTH)); 1530 break; 1531 } 1532 sparse_keymap_report_entry(acer_wmi_input_dev, key, 1533 1, true); 1534 } 1535 break; 1536 default: 1537 pr_warn("Unknown function number - %d - %d\n", 1538 return_value.function, return_value.key_num); 1539 break; 1540 } 1541} 1542 1543static acpi_status 1544wmid3_set_lm_mode(struct lm_input_params *params, 1545 struct lm_return_value *return_value) 1546{ 1547 acpi_status status; 1548 union acpi_object *obj; 1549 1550 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1551 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1552 1553 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1554 if (ACPI_FAILURE(status)) 1555 return status; 1556 1557 obj = output.pointer; 1558 1559 if (!obj) 1560 return AE_ERROR; 1561 else if (obj->type != ACPI_TYPE_BUFFER) { 1562 kfree(obj); 1563 return AE_ERROR; 1564 } 1565 if (obj->buffer.length != 4) { 1566 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1567 kfree(obj); 1568 return AE_ERROR; 1569 } 1570 1571 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1572 kfree(obj); 1573 1574 return status; 1575} 1576 1577static int acer_wmi_enable_ec_raw(void) 1578{ 1579 struct lm_return_value return_value; 1580 acpi_status status; 1581 struct lm_input_params params = { 1582 .function_num = 0x1, 1583 .commun_devices = 0xFFFF, 1584 .devices = 0xFFFF, 1585 .lm_status = 0x00, /* Launch Manager Deactive */ 1586 }; 1587 1588 status = wmid3_set_lm_mode(¶ms, &return_value); 1589 1590 if (return_value.error_code || return_value.ec_return_value) 1591 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n", 1592 return_value.error_code, 1593 return_value.ec_return_value); 1594 else 1595 pr_info("Enabled EC raw mode\n"); 1596 1597 return status; 1598} 1599 1600static int acer_wmi_enable_lm(void) 1601{ 1602 struct lm_return_value return_value; 1603 acpi_status status; 1604 struct lm_input_params params = { 1605 .function_num = 0x1, 1606 .commun_devices = 0xFFFF, 1607 .devices = 0xFFFF, 1608 .lm_status = 0x01, /* Launch Manager Active */ 1609 }; 1610 1611 status = wmid3_set_lm_mode(¶ms, &return_value); 1612 1613 if (return_value.error_code || return_value.ec_return_value) 1614 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n", 1615 return_value.error_code, 1616 return_value.ec_return_value); 1617 1618 return status; 1619} 1620 1621static int __init acer_wmi_input_setup(void) 1622{ 1623 acpi_status status; 1624 int err; 1625 1626 acer_wmi_input_dev = input_allocate_device(); 1627 if (!acer_wmi_input_dev) 1628 return -ENOMEM; 1629 1630 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1631 acer_wmi_input_dev->phys = "wmi/input0"; 1632 acer_wmi_input_dev->id.bustype = BUS_HOST; 1633 1634 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1635 if (err) 1636 goto err_free_dev; 1637 1638 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1639 acer_wmi_notify, NULL); 1640 if (ACPI_FAILURE(status)) { 1641 err = -EIO; 1642 goto err_free_keymap; 1643 } 1644 1645 err = input_register_device(acer_wmi_input_dev); 1646 if (err) 1647 goto err_uninstall_notifier; 1648 1649 return 0; 1650 1651err_uninstall_notifier: 1652 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1653err_free_keymap: 1654 sparse_keymap_free(acer_wmi_input_dev); 1655err_free_dev: 1656 input_free_device(acer_wmi_input_dev); 1657 return err; 1658} 1659 1660static void acer_wmi_input_destroy(void) 1661{ 1662 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1663 sparse_keymap_free(acer_wmi_input_dev); 1664 input_unregister_device(acer_wmi_input_dev); 1665} 1666 1667/* 1668 * debugfs functions 1669 */ 1670static u32 get_wmid_devices(void) 1671{ 1672 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1673 union acpi_object *obj; 1674 acpi_status status; 1675 u32 devices = 0; 1676 1677 status = wmi_query_block(WMID_GUID2, 1, &out); 1678 if (ACPI_FAILURE(status)) 1679 return 0; 1680 1681 obj = (union acpi_object *) out.pointer; 1682 if (obj && obj->type == ACPI_TYPE_BUFFER && 1683 (obj->buffer.length == sizeof(u32) || 1684 obj->buffer.length == sizeof(u64))) { 1685 devices = *((u32 *) obj->buffer.pointer); 1686 } else if (obj->type == ACPI_TYPE_INTEGER) { 1687 devices = (u32) obj->integer.value; 1688 } 1689 1690 kfree(out.pointer); 1691 return devices; 1692} 1693 1694/* 1695 * Platform device 1696 */ 1697static int __devinit acer_platform_probe(struct platform_device *device) 1698{ 1699 int err; 1700 1701 if (has_cap(ACER_CAP_MAILLED)) { 1702 err = acer_led_init(&device->dev); 1703 if (err) 1704 goto error_mailled; 1705 } 1706 1707 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1708 err = acer_backlight_init(&device->dev); 1709 if (err) 1710 goto error_brightness; 1711 } 1712 1713 err = acer_rfkill_init(&device->dev); 1714 if (err) 1715 goto error_rfkill; 1716 1717 return err; 1718 1719error_rfkill: 1720 if (has_cap(ACER_CAP_BRIGHTNESS)) 1721 acer_backlight_exit(); 1722error_brightness: 1723 if (has_cap(ACER_CAP_MAILLED)) 1724 acer_led_exit(); 1725error_mailled: 1726 return err; 1727} 1728 1729static int acer_platform_remove(struct platform_device *device) 1730{ 1731 if (has_cap(ACER_CAP_MAILLED)) 1732 acer_led_exit(); 1733 if (has_cap(ACER_CAP_BRIGHTNESS)) 1734 acer_backlight_exit(); 1735 1736 acer_rfkill_exit(); 1737 return 0; 1738} 1739 1740static int acer_platform_suspend(struct platform_device *dev, 1741pm_message_t state) 1742{ 1743 u32 value; 1744 struct acer_data *data = &interface->data; 1745 1746 if (!data) 1747 return -ENOMEM; 1748 1749 if (has_cap(ACER_CAP_MAILLED)) { 1750 get_u32(&value, ACER_CAP_MAILLED); 1751 set_u32(LED_OFF, ACER_CAP_MAILLED); 1752 data->mailled = value; 1753 } 1754 1755 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1756 get_u32(&value, ACER_CAP_BRIGHTNESS); 1757 data->brightness = value; 1758 } 1759 1760 return 0; 1761} 1762 1763static int acer_platform_resume(struct platform_device *device) 1764{ 1765 struct acer_data *data = &interface->data; 1766 1767 if (!data) 1768 return -ENOMEM; 1769 1770 if (has_cap(ACER_CAP_MAILLED)) 1771 set_u32(data->mailled, ACER_CAP_MAILLED); 1772 1773 if (has_cap(ACER_CAP_BRIGHTNESS)) 1774 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 1775 1776 return 0; 1777} 1778 1779static void acer_platform_shutdown(struct platform_device *device) 1780{ 1781 struct acer_data *data = &interface->data; 1782 1783 if (!data) 1784 return; 1785 1786 if (has_cap(ACER_CAP_MAILLED)) 1787 set_u32(LED_OFF, ACER_CAP_MAILLED); 1788} 1789 1790static struct platform_driver acer_platform_driver = { 1791 .driver = { 1792 .name = "acer-wmi", 1793 .owner = THIS_MODULE, 1794 }, 1795 .probe = acer_platform_probe, 1796 .remove = acer_platform_remove, 1797 .suspend = acer_platform_suspend, 1798 .resume = acer_platform_resume, 1799 .shutdown = acer_platform_shutdown, 1800}; 1801 1802static struct platform_device *acer_platform_device; 1803 1804static int remove_sysfs(struct platform_device *device) 1805{ 1806 if (has_cap(ACER_CAP_THREEG)) 1807 device_remove_file(&device->dev, &dev_attr_threeg); 1808 1809 device_remove_file(&device->dev, &dev_attr_interface); 1810 1811 return 0; 1812} 1813 1814static int create_sysfs(void) 1815{ 1816 int retval = -ENOMEM; 1817 1818 if (has_cap(ACER_CAP_THREEG)) { 1819 retval = device_create_file(&acer_platform_device->dev, 1820 &dev_attr_threeg); 1821 if (retval) 1822 goto error_sysfs; 1823 } 1824 1825 retval = device_create_file(&acer_platform_device->dev, 1826 &dev_attr_interface); 1827 if (retval) 1828 goto error_sysfs; 1829 1830 return 0; 1831 1832error_sysfs: 1833 remove_sysfs(acer_platform_device); 1834 return retval; 1835} 1836 1837static void remove_debugfs(void) 1838{ 1839 debugfs_remove(interface->debug.devices); 1840 debugfs_remove(interface->debug.root); 1841} 1842 1843static int create_debugfs(void) 1844{ 1845 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 1846 if (!interface->debug.root) { 1847 pr_err("Failed to create debugfs directory"); 1848 return -ENOMEM; 1849 } 1850 1851 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 1852 interface->debug.root, 1853 &interface->debug.wmid_devices); 1854 if (!interface->debug.devices) 1855 goto error_debugfs; 1856 1857 return 0; 1858 1859error_debugfs: 1860 remove_debugfs(); 1861 return -ENOMEM; 1862} 1863 1864static int __init acer_wmi_init(void) 1865{ 1866 int err; 1867 1868 pr_info("Acer Laptop ACPI-WMI Extras\n"); 1869 1870 if (dmi_check_system(acer_blacklist)) { 1871 pr_info("Blacklisted hardware detected - not loading\n"); 1872 return -ENODEV; 1873 } 1874 1875 find_quirks(); 1876 1877 /* 1878 * Detect which ACPI-WMI interface we're using. 1879 */ 1880 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1881 interface = &AMW0_V2_interface; 1882 1883 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1884 interface = &wmid_interface; 1885 1886 if (wmi_has_guid(WMID_GUID2) && interface) { 1887 if (ACPI_FAILURE(WMID_set_capabilities())) { 1888 pr_err("Unable to detect available WMID devices\n"); 1889 return -ENODEV; 1890 } 1891 } else if (!wmi_has_guid(WMID_GUID2) && interface) { 1892 pr_err("No WMID device detection method found\n"); 1893 return -ENODEV; 1894 } 1895 1896 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 1897 interface = &AMW0_interface; 1898 1899 if (ACPI_FAILURE(AMW0_set_capabilities())) { 1900 pr_err("Unable to detect available AMW0 devices\n"); 1901 return -ENODEV; 1902 } 1903 } 1904 1905 if (wmi_has_guid(AMW0_GUID1)) 1906 AMW0_find_mailled(); 1907 1908 if (!interface) { 1909 pr_err("No or unsupported WMI interface, unable to load\n"); 1910 return -ENODEV; 1911 } 1912 1913 set_quirks(); 1914 1915 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) { 1916 interface->capability &= ~ACER_CAP_BRIGHTNESS; 1917 pr_info("Brightness must be controlled by " 1918 "generic video driver\n"); 1919 } 1920 1921 if (wmi_has_guid(WMID_GUID3)) { 1922 if (ec_raw_mode) { 1923 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 1924 pr_err("Cannot enable EC raw mode\n"); 1925 return -ENODEV; 1926 } 1927 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 1928 pr_err("Cannot enable Launch Manager mode\n"); 1929 return -ENODEV; 1930 } 1931 } else if (ec_raw_mode) { 1932 pr_info("No WMID EC raw mode enable method\n"); 1933 } 1934 1935 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 1936 err = acer_wmi_input_setup(); 1937 if (err) 1938 return err; 1939 } 1940 1941 err = platform_driver_register(&acer_platform_driver); 1942 if (err) { 1943 pr_err("Unable to register platform driver.\n"); 1944 goto error_platform_register; 1945 } 1946 1947 acer_platform_device = platform_device_alloc("acer-wmi", -1); 1948 if (!acer_platform_device) { 1949 err = -ENOMEM; 1950 goto error_device_alloc; 1951 } 1952 1953 err = platform_device_add(acer_platform_device); 1954 if (err) 1955 goto error_device_add; 1956 1957 err = create_sysfs(); 1958 if (err) 1959 goto error_create_sys; 1960 1961 if (wmi_has_guid(WMID_GUID2)) { 1962 interface->debug.wmid_devices = get_wmid_devices(); 1963 err = create_debugfs(); 1964 if (err) 1965 goto error_create_debugfs; 1966 } 1967 1968 /* Override any initial settings with values from the commandline */ 1969 acer_commandline_init(); 1970 1971 return 0; 1972 1973error_create_debugfs: 1974 remove_sysfs(acer_platform_device); 1975error_create_sys: 1976 platform_device_del(acer_platform_device); 1977error_device_add: 1978 platform_device_put(acer_platform_device); 1979error_device_alloc: 1980 platform_driver_unregister(&acer_platform_driver); 1981error_platform_register: 1982 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 1983 acer_wmi_input_destroy(); 1984 1985 return err; 1986} 1987 1988static void __exit acer_wmi_exit(void) 1989{ 1990 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 1991 acer_wmi_input_destroy(); 1992 1993 remove_sysfs(acer_platform_device); 1994 remove_debugfs(); 1995 platform_device_unregister(acer_platform_device); 1996 platform_driver_unregister(&acer_platform_driver); 1997 1998 pr_info("Acer Laptop WMI Extras unloaded\n"); 1999 return; 2000} 2001 2002module_init(acer_wmi_init); 2003module_exit(acer_wmi_exit); 2004