acer-wmi.c revision 9a756de1296e02d1d9ccccbe5dc9d89df43b2654
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#include <linux/kernel.h> 26#include <linux/module.h> 27#include <linux/init.h> 28#include <linux/types.h> 29#include <linux/dmi.h> 30#include <linux/fb.h> 31#include <linux/backlight.h> 32#include <linux/leds.h> 33#include <linux/platform_device.h> 34#include <linux/acpi.h> 35#include <linux/i8042.h> 36#include <linux/rfkill.h> 37#include <linux/workqueue.h> 38#include <linux/debugfs.h> 39#include <linux/slab.h> 40#include <linux/input.h> 41#include <linux/input/sparse-keymap.h> 42 43#include <acpi/acpi_drivers.h> 44 45MODULE_AUTHOR("Carlos Corbacho"); 46MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); 47MODULE_LICENSE("GPL"); 48 49#define ACER_LOGPREFIX "acer-wmi: " 50#define ACER_ERR KERN_ERR ACER_LOGPREFIX 51#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX 52#define ACER_INFO KERN_INFO ACER_LOGPREFIX 53#define ACER_WARNING KERN_WARNING ACER_LOGPREFIX 54 55/* 56 * Magic Number 57 * Meaning is unknown - this number is required for writing to ACPI for AMW0 58 * (it's also used in acerhk when directly accessing the BIOS) 59 */ 60#define ACER_AMW0_WRITE 0x9610 61 62/* 63 * Bit masks for the AMW0 interface 64 */ 65#define ACER_AMW0_WIRELESS_MASK 0x35 66#define ACER_AMW0_BLUETOOTH_MASK 0x34 67#define ACER_AMW0_MAILLED_MASK 0x31 68 69/* 70 * Method IDs for WMID interface 71 */ 72#define ACER_WMID_GET_WIRELESS_METHODID 1 73#define ACER_WMID_GET_BLUETOOTH_METHODID 2 74#define ACER_WMID_GET_BRIGHTNESS_METHODID 3 75#define ACER_WMID_SET_WIRELESS_METHODID 4 76#define ACER_WMID_SET_BLUETOOTH_METHODID 5 77#define ACER_WMID_SET_BRIGHTNESS_METHODID 6 78#define ACER_WMID_GET_THREEG_METHODID 10 79#define ACER_WMID_SET_THREEG_METHODID 11 80 81/* 82 * Acer ACPI method GUIDs 83 */ 84#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" 85#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" 86#define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3" 87#define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" 88#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" 89 90/* 91 * Acer ACPI event GUIDs 92 */ 93#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" 94 95MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); 96MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); 97MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 98 99enum acer_wmi_event_ids { 100 WMID_HOTKEY_EVENT = 0x1, 101}; 102 103static const struct key_entry acer_wmi_keymap[] = { 104 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ 105 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ 106 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ 107 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ 108 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ 109 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ 110 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 111 {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */ 112 {KE_END, 0} 113}; 114 115static struct input_dev *acer_wmi_input_dev; 116 117struct event_return_value { 118 u8 function; 119 u8 key_num; 120 u16 device_state; 121 u32 reserved; 122} __attribute__((packed)); 123 124/* 125 * GUID3 Get Device Status device flags 126 */ 127#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 128#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 129#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 130 131struct lm_input_params { 132 u8 function_num; /* Function Number */ 133 u16 commun_devices; /* Communication type devices default status */ 134 u16 devices; /* Other type devices default status */ 135 u8 lm_status; /* Launch Manager Status */ 136 u16 reserved; 137} __attribute__((packed)); 138 139struct lm_return_value { 140 u8 error_code; /* Error Code */ 141 u8 ec_return_value; /* EC Return Value */ 142 u16 reserved; 143} __attribute__((packed)); 144 145struct wmid3_gds_input_param { /* Get Device Status input parameter */ 146 u8 function_num; /* Function Number */ 147 u8 hotkey_number; /* Hotkey Number */ 148 u16 devices; /* Get Device */ 149} __attribute__((packed)); 150 151struct wmid3_gds_return_value { /* Get Device Status return value*/ 152 u8 error_code; /* Error Code */ 153 u8 ec_return_value; /* EC Return Value */ 154 u16 devices; /* Current Device Status */ 155 u32 reserved; 156} __attribute__((packed)); 157 158struct hotkey_function_type_aa { 159 u8 type; 160 u8 length; 161 u16 handle; 162 u16 commun_func_bitmap; 163} __attribute__((packed)); 164 165/* 166 * Interface capability flags 167 */ 168#define ACER_CAP_MAILLED (1<<0) 169#define ACER_CAP_WIRELESS (1<<1) 170#define ACER_CAP_BLUETOOTH (1<<2) 171#define ACER_CAP_BRIGHTNESS (1<<3) 172#define ACER_CAP_THREEG (1<<4) 173#define ACER_CAP_ANY (0xFFFFFFFF) 174 175/* 176 * Interface type flags 177 */ 178enum interface_flags { 179 ACER_AMW0, 180 ACER_AMW0_V2, 181 ACER_WMID, 182}; 183 184#define ACER_DEFAULT_WIRELESS 0 185#define ACER_DEFAULT_BLUETOOTH 0 186#define ACER_DEFAULT_MAILLED 0 187#define ACER_DEFAULT_THREEG 0 188 189static int max_brightness = 0xF; 190 191static int mailled = -1; 192static int brightness = -1; 193static int threeg = -1; 194static int force_series; 195static bool ec_raw_mode; 196static bool has_type_aa; 197 198module_param(mailled, int, 0444); 199module_param(brightness, int, 0444); 200module_param(threeg, int, 0444); 201module_param(force_series, int, 0444); 202module_param(ec_raw_mode, bool, 0444); 203MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 204MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 205MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 206MODULE_PARM_DESC(force_series, "Force a different laptop series"); 207MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 208 209struct acer_data { 210 int mailled; 211 int threeg; 212 int brightness; 213}; 214 215struct acer_debug { 216 struct dentry *root; 217 struct dentry *devices; 218 u32 wmid_devices; 219}; 220 221static struct rfkill *wireless_rfkill; 222static struct rfkill *bluetooth_rfkill; 223static struct rfkill *threeg_rfkill; 224 225/* Each low-level interface must define at least some of the following */ 226struct wmi_interface { 227 /* The WMI device type */ 228 u32 type; 229 230 /* The capabilities this interface provides */ 231 u32 capability; 232 233 /* Private data for the current interface */ 234 struct acer_data data; 235 236 /* debugfs entries associated with this interface */ 237 struct acer_debug debug; 238}; 239 240/* The static interface pointer, points to the currently detected interface */ 241static struct wmi_interface *interface; 242 243/* 244 * Embedded Controller quirks 245 * Some laptops require us to directly access the EC to either enable or query 246 * features that are not available through WMI. 247 */ 248 249struct quirk_entry { 250 u8 wireless; 251 u8 mailled; 252 s8 brightness; 253 u8 bluetooth; 254}; 255 256static struct quirk_entry *quirks; 257 258static void set_quirks(void) 259{ 260 if (!interface) 261 return; 262 263 if (quirks->mailled) 264 interface->capability |= ACER_CAP_MAILLED; 265 266 if (quirks->brightness) 267 interface->capability |= ACER_CAP_BRIGHTNESS; 268} 269 270static int dmi_matched(const struct dmi_system_id *dmi) 271{ 272 quirks = dmi->driver_data; 273 return 1; 274} 275 276static struct quirk_entry quirk_unknown = { 277}; 278 279static struct quirk_entry quirk_acer_aspire_1520 = { 280 .brightness = -1, 281}; 282 283static struct quirk_entry quirk_acer_travelmate_2490 = { 284 .mailled = 1, 285}; 286 287/* This AMW0 laptop has no bluetooth */ 288static struct quirk_entry quirk_medion_md_98300 = { 289 .wireless = 1, 290}; 291 292static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 293 .wireless = 2, 294}; 295 296/* The Aspire One has a dummy ACPI-WMI interface - disable it */ 297static struct dmi_system_id __devinitdata acer_blacklist[] = { 298 { 299 .ident = "Acer Aspire One (SSD)", 300 .matches = { 301 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 302 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 303 }, 304 }, 305 { 306 .ident = "Acer Aspire One (HDD)", 307 .matches = { 308 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 309 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 310 }, 311 }, 312 {} 313}; 314 315static struct dmi_system_id acer_quirks[] = { 316 { 317 .callback = dmi_matched, 318 .ident = "Acer Aspire 1360", 319 .matches = { 320 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 321 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 322 }, 323 .driver_data = &quirk_acer_aspire_1520, 324 }, 325 { 326 .callback = dmi_matched, 327 .ident = "Acer Aspire 1520", 328 .matches = { 329 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 330 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 331 }, 332 .driver_data = &quirk_acer_aspire_1520, 333 }, 334 { 335 .callback = dmi_matched, 336 .ident = "Acer Aspire 3100", 337 .matches = { 338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 339 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 340 }, 341 .driver_data = &quirk_acer_travelmate_2490, 342 }, 343 { 344 .callback = dmi_matched, 345 .ident = "Acer Aspire 3610", 346 .matches = { 347 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 348 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 349 }, 350 .driver_data = &quirk_acer_travelmate_2490, 351 }, 352 { 353 .callback = dmi_matched, 354 .ident = "Acer Aspire 5100", 355 .matches = { 356 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 357 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 358 }, 359 .driver_data = &quirk_acer_travelmate_2490, 360 }, 361 { 362 .callback = dmi_matched, 363 .ident = "Acer Aspire 5610", 364 .matches = { 365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 367 }, 368 .driver_data = &quirk_acer_travelmate_2490, 369 }, 370 { 371 .callback = dmi_matched, 372 .ident = "Acer Aspire 5630", 373 .matches = { 374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 376 }, 377 .driver_data = &quirk_acer_travelmate_2490, 378 }, 379 { 380 .callback = dmi_matched, 381 .ident = "Acer Aspire 5650", 382 .matches = { 383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 385 }, 386 .driver_data = &quirk_acer_travelmate_2490, 387 }, 388 { 389 .callback = dmi_matched, 390 .ident = "Acer Aspire 5680", 391 .matches = { 392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 394 }, 395 .driver_data = &quirk_acer_travelmate_2490, 396 }, 397 { 398 .callback = dmi_matched, 399 .ident = "Acer Aspire 9110", 400 .matches = { 401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 403 }, 404 .driver_data = &quirk_acer_travelmate_2490, 405 }, 406 { 407 .callback = dmi_matched, 408 .ident = "Acer TravelMate 2490", 409 .matches = { 410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 411 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 412 }, 413 .driver_data = &quirk_acer_travelmate_2490, 414 }, 415 { 416 .callback = dmi_matched, 417 .ident = "Acer TravelMate 4200", 418 .matches = { 419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 420 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 421 }, 422 .driver_data = &quirk_acer_travelmate_2490, 423 }, 424 { 425 .callback = dmi_matched, 426 .ident = "Fujitsu Siemens Amilo Li 1718", 427 .matches = { 428 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 429 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 430 }, 431 .driver_data = &quirk_fujitsu_amilo_li_1718, 432 }, 433 { 434 .callback = dmi_matched, 435 .ident = "Medion MD 98300", 436 .matches = { 437 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 438 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 439 }, 440 .driver_data = &quirk_medion_md_98300, 441 }, 442 {} 443}; 444 445/* Find which quirks are needed for a particular vendor/ model pair */ 446static void find_quirks(void) 447{ 448 if (!force_series) { 449 dmi_check_system(acer_quirks); 450 } else if (force_series == 2490) { 451 quirks = &quirk_acer_travelmate_2490; 452 } 453 454 if (quirks == NULL) 455 quirks = &quirk_unknown; 456 457 set_quirks(); 458} 459 460/* 461 * General interface convenience methods 462 */ 463 464static bool has_cap(u32 cap) 465{ 466 if ((interface->capability & cap) != 0) 467 return 1; 468 469 return 0; 470} 471 472/* 473 * AMW0 (V1) interface 474 */ 475struct wmab_args { 476 u32 eax; 477 u32 ebx; 478 u32 ecx; 479 u32 edx; 480}; 481 482struct wmab_ret { 483 u32 eax; 484 u32 ebx; 485 u32 ecx; 486 u32 edx; 487 u32 eex; 488}; 489 490static acpi_status wmab_execute(struct wmab_args *regbuf, 491struct acpi_buffer *result) 492{ 493 struct acpi_buffer input; 494 acpi_status status; 495 input.length = sizeof(struct wmab_args); 496 input.pointer = (u8 *)regbuf; 497 498 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 499 500 return status; 501} 502 503static acpi_status AMW0_get_u32(u32 *value, u32 cap, 504struct wmi_interface *iface) 505{ 506 int err; 507 u8 result; 508 509 switch (cap) { 510 case ACER_CAP_MAILLED: 511 switch (quirks->mailled) { 512 default: 513 err = ec_read(0xA, &result); 514 if (err) 515 return AE_ERROR; 516 *value = (result >> 7) & 0x1; 517 return AE_OK; 518 } 519 break; 520 case ACER_CAP_WIRELESS: 521 switch (quirks->wireless) { 522 case 1: 523 err = ec_read(0x7B, &result); 524 if (err) 525 return AE_ERROR; 526 *value = result & 0x1; 527 return AE_OK; 528 case 2: 529 err = ec_read(0x71, &result); 530 if (err) 531 return AE_ERROR; 532 *value = result & 0x1; 533 return AE_OK; 534 default: 535 err = ec_read(0xA, &result); 536 if (err) 537 return AE_ERROR; 538 *value = (result >> 2) & 0x1; 539 return AE_OK; 540 } 541 break; 542 case ACER_CAP_BLUETOOTH: 543 switch (quirks->bluetooth) { 544 default: 545 err = ec_read(0xA, &result); 546 if (err) 547 return AE_ERROR; 548 *value = (result >> 4) & 0x1; 549 return AE_OK; 550 } 551 break; 552 case ACER_CAP_BRIGHTNESS: 553 switch (quirks->brightness) { 554 default: 555 err = ec_read(0x83, &result); 556 if (err) 557 return AE_ERROR; 558 *value = result; 559 return AE_OK; 560 } 561 break; 562 default: 563 return AE_ERROR; 564 } 565 return AE_OK; 566} 567 568static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 569{ 570 struct wmab_args args; 571 572 args.eax = ACER_AMW0_WRITE; 573 args.ebx = value ? (1<<8) : 0; 574 args.ecx = args.edx = 0; 575 576 switch (cap) { 577 case ACER_CAP_MAILLED: 578 if (value > 1) 579 return AE_BAD_PARAMETER; 580 args.ebx |= ACER_AMW0_MAILLED_MASK; 581 break; 582 case ACER_CAP_WIRELESS: 583 if (value > 1) 584 return AE_BAD_PARAMETER; 585 args.ebx |= ACER_AMW0_WIRELESS_MASK; 586 break; 587 case ACER_CAP_BLUETOOTH: 588 if (value > 1) 589 return AE_BAD_PARAMETER; 590 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 591 break; 592 case ACER_CAP_BRIGHTNESS: 593 if (value > max_brightness) 594 return AE_BAD_PARAMETER; 595 switch (quirks->brightness) { 596 default: 597 return ec_write(0x83, value); 598 break; 599 } 600 default: 601 return AE_ERROR; 602 } 603 604 /* Actually do the set */ 605 return wmab_execute(&args, NULL); 606} 607 608static acpi_status AMW0_find_mailled(void) 609{ 610 struct wmab_args args; 611 struct wmab_ret ret; 612 acpi_status status = AE_OK; 613 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 614 union acpi_object *obj; 615 616 args.eax = 0x86; 617 args.ebx = args.ecx = args.edx = 0; 618 619 status = wmab_execute(&args, &out); 620 if (ACPI_FAILURE(status)) 621 return status; 622 623 obj = (union acpi_object *) out.pointer; 624 if (obj && obj->type == ACPI_TYPE_BUFFER && 625 obj->buffer.length == sizeof(struct wmab_ret)) { 626 ret = *((struct wmab_ret *) obj->buffer.pointer); 627 } else { 628 kfree(out.pointer); 629 return AE_ERROR; 630 } 631 632 if (ret.eex & 0x1) 633 interface->capability |= ACER_CAP_MAILLED; 634 635 kfree(out.pointer); 636 637 return AE_OK; 638} 639 640static acpi_status AMW0_set_capabilities(void) 641{ 642 struct wmab_args args; 643 struct wmab_ret ret; 644 acpi_status status; 645 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 646 union acpi_object *obj; 647 648 /* 649 * On laptops with this strange GUID (non Acer), normal probing doesn't 650 * work. 651 */ 652 if (wmi_has_guid(AMW0_GUID2)) { 653 interface->capability |= ACER_CAP_WIRELESS; 654 return AE_OK; 655 } 656 657 args.eax = ACER_AMW0_WRITE; 658 args.ecx = args.edx = 0; 659 660 args.ebx = 0xa2 << 8; 661 args.ebx |= ACER_AMW0_WIRELESS_MASK; 662 663 status = wmab_execute(&args, &out); 664 if (ACPI_FAILURE(status)) 665 return status; 666 667 obj = out.pointer; 668 if (obj && obj->type == ACPI_TYPE_BUFFER && 669 obj->buffer.length == sizeof(struct wmab_ret)) { 670 ret = *((struct wmab_ret *) obj->buffer.pointer); 671 } else { 672 status = AE_ERROR; 673 goto out; 674 } 675 676 if (ret.eax & 0x1) 677 interface->capability |= ACER_CAP_WIRELESS; 678 679 args.ebx = 2 << 8; 680 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 681 682 /* 683 * It's ok to use existing buffer for next wmab_execute call. 684 * But we need to kfree(out.pointer) if next wmab_execute fail. 685 */ 686 status = wmab_execute(&args, &out); 687 if (ACPI_FAILURE(status)) 688 goto out; 689 690 obj = (union acpi_object *) out.pointer; 691 if (obj && obj->type == ACPI_TYPE_BUFFER 692 && obj->buffer.length == sizeof(struct wmab_ret)) { 693 ret = *((struct wmab_ret *) obj->buffer.pointer); 694 } else { 695 status = AE_ERROR; 696 goto out; 697 } 698 699 if (ret.eax & 0x1) 700 interface->capability |= ACER_CAP_BLUETOOTH; 701 702 /* 703 * This appears to be safe to enable, since all Wistron based laptops 704 * appear to use the same EC register for brightness, even if they 705 * differ for wireless, etc 706 */ 707 if (quirks->brightness >= 0) 708 interface->capability |= ACER_CAP_BRIGHTNESS; 709 710 status = AE_OK; 711out: 712 kfree(out.pointer); 713 return status; 714} 715 716static struct wmi_interface AMW0_interface = { 717 .type = ACER_AMW0, 718}; 719 720static struct wmi_interface AMW0_V2_interface = { 721 .type = ACER_AMW0_V2, 722}; 723 724/* 725 * New interface (The WMID interface) 726 */ 727static acpi_status 728WMI_execute_u32(u32 method_id, u32 in, u32 *out) 729{ 730 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 731 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 732 union acpi_object *obj; 733 u32 tmp; 734 acpi_status status; 735 736 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 737 738 if (ACPI_FAILURE(status)) 739 return status; 740 741 obj = (union acpi_object *) result.pointer; 742 if (obj && obj->type == ACPI_TYPE_BUFFER && 743 obj->buffer.length == sizeof(u32)) { 744 tmp = *((u32 *) obj->buffer.pointer); 745 } else { 746 tmp = 0; 747 } 748 749 if (out) 750 *out = tmp; 751 752 kfree(result.pointer); 753 754 return status; 755} 756 757static acpi_status WMID_get_u32(u32 *value, u32 cap, 758struct wmi_interface *iface) 759{ 760 acpi_status status; 761 u8 tmp; 762 u32 result, method_id = 0; 763 764 switch (cap) { 765 case ACER_CAP_WIRELESS: 766 method_id = ACER_WMID_GET_WIRELESS_METHODID; 767 break; 768 case ACER_CAP_BLUETOOTH: 769 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 770 break; 771 case ACER_CAP_BRIGHTNESS: 772 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 773 break; 774 case ACER_CAP_THREEG: 775 method_id = ACER_WMID_GET_THREEG_METHODID; 776 break; 777 case ACER_CAP_MAILLED: 778 if (quirks->mailled == 1) { 779 ec_read(0x9f, &tmp); 780 *value = tmp & 0x1; 781 return 0; 782 } 783 default: 784 return AE_ERROR; 785 } 786 status = WMI_execute_u32(method_id, 0, &result); 787 788 if (ACPI_SUCCESS(status)) 789 *value = (u8)result; 790 791 return status; 792} 793 794static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 795{ 796 u32 method_id = 0; 797 char param; 798 799 switch (cap) { 800 case ACER_CAP_BRIGHTNESS: 801 if (value > max_brightness) 802 return AE_BAD_PARAMETER; 803 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 804 break; 805 case ACER_CAP_WIRELESS: 806 if (value > 1) 807 return AE_BAD_PARAMETER; 808 method_id = ACER_WMID_SET_WIRELESS_METHODID; 809 break; 810 case ACER_CAP_BLUETOOTH: 811 if (value > 1) 812 return AE_BAD_PARAMETER; 813 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 814 break; 815 case ACER_CAP_THREEG: 816 if (value > 1) 817 return AE_BAD_PARAMETER; 818 method_id = ACER_WMID_SET_THREEG_METHODID; 819 break; 820 case ACER_CAP_MAILLED: 821 if (value > 1) 822 return AE_BAD_PARAMETER; 823 if (quirks->mailled == 1) { 824 param = value ? 0x92 : 0x93; 825 i8042_lock_chip(); 826 i8042_command(¶m, 0x1059); 827 i8042_unlock_chip(); 828 return 0; 829 } 830 break; 831 default: 832 return AE_ERROR; 833 } 834 return WMI_execute_u32(method_id, (u32)value, NULL); 835} 836 837static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 838{ 839 struct hotkey_function_type_aa *type_aa; 840 841 /* We are looking for OEM-specific Type AAh */ 842 if (header->type != 0xAA) 843 return; 844 845 has_type_aa = true; 846 type_aa = (struct hotkey_function_type_aa *) header; 847 848 printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n", 849 type_aa->commun_func_bitmap); 850 851 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 852 interface->capability |= ACER_CAP_WIRELESS; 853 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 854 interface->capability |= ACER_CAP_THREEG; 855 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 856 interface->capability |= ACER_CAP_BLUETOOTH; 857} 858 859static acpi_status WMID_set_capabilities(void) 860{ 861 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 862 union acpi_object *obj; 863 acpi_status status; 864 u32 devices; 865 866 status = wmi_query_block(WMID_GUID2, 1, &out); 867 if (ACPI_FAILURE(status)) 868 return status; 869 870 obj = (union acpi_object *) out.pointer; 871 if (obj && obj->type == ACPI_TYPE_BUFFER && 872 obj->buffer.length == sizeof(u32)) { 873 devices = *((u32 *) obj->buffer.pointer); 874 } else { 875 kfree(out.pointer); 876 return AE_ERROR; 877 } 878 879 dmi_walk(type_aa_dmi_decode, NULL); 880 if (!has_type_aa) { 881 interface->capability |= ACER_CAP_WIRELESS; 882 interface->capability |= ACER_CAP_THREEG; 883 if (devices & 0x10) 884 interface->capability |= ACER_CAP_BLUETOOTH; 885 } 886 887 /* WMID always provides brightness methods */ 888 interface->capability |= ACER_CAP_BRIGHTNESS; 889 890 if (!(devices & 0x20)) 891 max_brightness = 0x9; 892 893 kfree(out.pointer); 894 return status; 895} 896 897static struct wmi_interface wmid_interface = { 898 .type = ACER_WMID, 899}; 900 901/* 902 * Generic Device (interface-independent) 903 */ 904 905static acpi_status get_u32(u32 *value, u32 cap) 906{ 907 acpi_status status = AE_ERROR; 908 909 switch (interface->type) { 910 case ACER_AMW0: 911 status = AMW0_get_u32(value, cap, interface); 912 break; 913 case ACER_AMW0_V2: 914 if (cap == ACER_CAP_MAILLED) { 915 status = AMW0_get_u32(value, cap, interface); 916 break; 917 } 918 case ACER_WMID: 919 status = WMID_get_u32(value, cap, interface); 920 break; 921 } 922 923 return status; 924} 925 926static acpi_status set_u32(u32 value, u32 cap) 927{ 928 acpi_status status; 929 930 if (interface->capability & cap) { 931 switch (interface->type) { 932 case ACER_AMW0: 933 return AMW0_set_u32(value, cap, interface); 934 case ACER_AMW0_V2: 935 if (cap == ACER_CAP_MAILLED) 936 return AMW0_set_u32(value, cap, interface); 937 938 /* 939 * On some models, some WMID methods don't toggle 940 * properly. For those cases, we want to run the AMW0 941 * method afterwards to be certain we've really toggled 942 * the device state. 943 */ 944 if (cap == ACER_CAP_WIRELESS || 945 cap == ACER_CAP_BLUETOOTH) { 946 status = WMID_set_u32(value, cap, interface); 947 if (ACPI_FAILURE(status)) 948 return status; 949 950 return AMW0_set_u32(value, cap, interface); 951 } 952 case ACER_WMID: 953 return WMID_set_u32(value, cap, interface); 954 default: 955 return AE_BAD_PARAMETER; 956 } 957 } 958 return AE_BAD_PARAMETER; 959} 960 961static void __init acer_commandline_init(void) 962{ 963 /* 964 * These will all fail silently if the value given is invalid, or the 965 * capability isn't available on the given interface 966 */ 967 set_u32(mailled, ACER_CAP_MAILLED); 968 if (!has_type_aa) 969 set_u32(threeg, ACER_CAP_THREEG); 970 set_u32(brightness, ACER_CAP_BRIGHTNESS); 971} 972 973/* 974 * LED device (Mail LED only, no other LEDs known yet) 975 */ 976static void mail_led_set(struct led_classdev *led_cdev, 977enum led_brightness value) 978{ 979 set_u32(value, ACER_CAP_MAILLED); 980} 981 982static struct led_classdev mail_led = { 983 .name = "acer-wmi::mail", 984 .brightness_set = mail_led_set, 985}; 986 987static int __devinit acer_led_init(struct device *dev) 988{ 989 return led_classdev_register(dev, &mail_led); 990} 991 992static void acer_led_exit(void) 993{ 994 led_classdev_unregister(&mail_led); 995} 996 997/* 998 * Backlight device 999 */ 1000static struct backlight_device *acer_backlight_device; 1001 1002static int read_brightness(struct backlight_device *bd) 1003{ 1004 u32 value; 1005 get_u32(&value, ACER_CAP_BRIGHTNESS); 1006 return value; 1007} 1008 1009static int update_bl_status(struct backlight_device *bd) 1010{ 1011 int intensity = bd->props.brightness; 1012 1013 if (bd->props.power != FB_BLANK_UNBLANK) 1014 intensity = 0; 1015 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1016 intensity = 0; 1017 1018 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1019 1020 return 0; 1021} 1022 1023static const struct backlight_ops acer_bl_ops = { 1024 .get_brightness = read_brightness, 1025 .update_status = update_bl_status, 1026}; 1027 1028static int __devinit acer_backlight_init(struct device *dev) 1029{ 1030 struct backlight_properties props; 1031 struct backlight_device *bd; 1032 1033 memset(&props, 0, sizeof(struct backlight_properties)); 1034 props.max_brightness = max_brightness; 1035 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1036 &props); 1037 if (IS_ERR(bd)) { 1038 printk(ACER_ERR "Could not register Acer backlight device\n"); 1039 acer_backlight_device = NULL; 1040 return PTR_ERR(bd); 1041 } 1042 1043 acer_backlight_device = bd; 1044 1045 bd->props.power = FB_BLANK_UNBLANK; 1046 bd->props.brightness = read_brightness(bd); 1047 backlight_update_status(bd); 1048 return 0; 1049} 1050 1051static void acer_backlight_exit(void) 1052{ 1053 backlight_device_unregister(acer_backlight_device); 1054} 1055 1056static acpi_status wmid3_get_device_status(u32 *value, u16 device) 1057{ 1058 struct wmid3_gds_return_value return_value; 1059 acpi_status status; 1060 union acpi_object *obj; 1061 struct wmid3_gds_input_param params = { 1062 .function_num = 0x1, 1063 .hotkey_number = 0x01, 1064 .devices = device, 1065 }; 1066 struct acpi_buffer input = { 1067 sizeof(struct wmid3_gds_input_param), 1068 ¶ms 1069 }; 1070 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1071 1072 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 1073 if (ACPI_FAILURE(status)) 1074 return status; 1075 1076 obj = output.pointer; 1077 1078 if (!obj) 1079 return AE_ERROR; 1080 else if (obj->type != ACPI_TYPE_BUFFER) { 1081 kfree(obj); 1082 return AE_ERROR; 1083 } 1084 if (obj->buffer.length != 8) { 1085 printk(ACER_WARNING "Unknown buffer length %d\n", 1086 obj->buffer.length); 1087 kfree(obj); 1088 return AE_ERROR; 1089 } 1090 1091 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1092 kfree(obj); 1093 1094 if (return_value.error_code || return_value.ec_return_value) 1095 printk(ACER_WARNING "Get Device Status failed: " 1096 "0x%x - 0x%x\n", return_value.error_code, 1097 return_value.ec_return_value); 1098 else 1099 *value = !!(return_value.devices & device); 1100 1101 return status; 1102} 1103 1104static acpi_status get_device_status(u32 *value, u32 cap) 1105{ 1106 if (wmi_has_guid(WMID_GUID3)) { 1107 u16 device; 1108 1109 switch (cap) { 1110 case ACER_CAP_WIRELESS: 1111 device = ACER_WMID3_GDS_WIRELESS; 1112 break; 1113 case ACER_CAP_BLUETOOTH: 1114 device = ACER_WMID3_GDS_BLUETOOTH; 1115 break; 1116 case ACER_CAP_THREEG: 1117 device = ACER_WMID3_GDS_THREEG; 1118 break; 1119 default: 1120 return AE_ERROR; 1121 } 1122 return wmid3_get_device_status(value, device); 1123 1124 } else { 1125 return get_u32(value, cap); 1126 } 1127} 1128 1129/* 1130 * Rfkill devices 1131 */ 1132static void acer_rfkill_update(struct work_struct *ignored); 1133static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1134static void acer_rfkill_update(struct work_struct *ignored) 1135{ 1136 u32 state; 1137 acpi_status status; 1138 1139 status = get_u32(&state, ACER_CAP_WIRELESS); 1140 if (ACPI_SUCCESS(status)) 1141 rfkill_set_sw_state(wireless_rfkill, !state); 1142 1143 if (has_cap(ACER_CAP_BLUETOOTH)) { 1144 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1145 if (ACPI_SUCCESS(status)) 1146 rfkill_set_sw_state(bluetooth_rfkill, !state); 1147 } 1148 1149 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1150 status = wmid3_get_device_status(&state, 1151 ACER_WMID3_GDS_THREEG); 1152 if (ACPI_SUCCESS(status)) 1153 rfkill_set_sw_state(threeg_rfkill, !state); 1154 } 1155 1156 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1157} 1158 1159static int acer_rfkill_set(void *data, bool blocked) 1160{ 1161 acpi_status status; 1162 u32 cap = (unsigned long)data; 1163 status = set_u32(!blocked, cap); 1164 if (ACPI_FAILURE(status)) 1165 return -ENODEV; 1166 return 0; 1167} 1168 1169static const struct rfkill_ops acer_rfkill_ops = { 1170 .set_block = acer_rfkill_set, 1171}; 1172 1173static struct rfkill *acer_rfkill_register(struct device *dev, 1174 enum rfkill_type type, 1175 char *name, u32 cap) 1176{ 1177 int err; 1178 struct rfkill *rfkill_dev; 1179 u32 state; 1180 acpi_status status; 1181 1182 rfkill_dev = rfkill_alloc(name, dev, type, 1183 &acer_rfkill_ops, 1184 (void *)(unsigned long)cap); 1185 if (!rfkill_dev) 1186 return ERR_PTR(-ENOMEM); 1187 1188 status = get_device_status(&state, cap); 1189 if (ACPI_SUCCESS(status)) 1190 rfkill_init_sw_state(rfkill_dev, !state); 1191 1192 err = rfkill_register(rfkill_dev); 1193 if (err) { 1194 rfkill_destroy(rfkill_dev); 1195 return ERR_PTR(err); 1196 } 1197 return rfkill_dev; 1198} 1199 1200static int acer_rfkill_init(struct device *dev) 1201{ 1202 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1203 "acer-wireless", ACER_CAP_WIRELESS); 1204 if (IS_ERR(wireless_rfkill)) 1205 return PTR_ERR(wireless_rfkill); 1206 1207 if (has_cap(ACER_CAP_BLUETOOTH)) { 1208 bluetooth_rfkill = acer_rfkill_register(dev, 1209 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1210 ACER_CAP_BLUETOOTH); 1211 if (IS_ERR(bluetooth_rfkill)) { 1212 rfkill_unregister(wireless_rfkill); 1213 rfkill_destroy(wireless_rfkill); 1214 return PTR_ERR(bluetooth_rfkill); 1215 } 1216 } 1217 1218 if (has_cap(ACER_CAP_THREEG)) { 1219 threeg_rfkill = acer_rfkill_register(dev, 1220 RFKILL_TYPE_WWAN, "acer-threeg", 1221 ACER_CAP_THREEG); 1222 if (IS_ERR(threeg_rfkill)) { 1223 rfkill_unregister(wireless_rfkill); 1224 rfkill_destroy(wireless_rfkill); 1225 rfkill_unregister(bluetooth_rfkill); 1226 rfkill_destroy(bluetooth_rfkill); 1227 return PTR_ERR(threeg_rfkill); 1228 } 1229 } 1230 1231 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1232 1233 return 0; 1234} 1235 1236static void acer_rfkill_exit(void) 1237{ 1238 cancel_delayed_work_sync(&acer_rfkill_work); 1239 1240 rfkill_unregister(wireless_rfkill); 1241 rfkill_destroy(wireless_rfkill); 1242 1243 if (has_cap(ACER_CAP_BLUETOOTH)) { 1244 rfkill_unregister(bluetooth_rfkill); 1245 rfkill_destroy(bluetooth_rfkill); 1246 } 1247 1248 if (has_cap(ACER_CAP_THREEG)) { 1249 rfkill_unregister(threeg_rfkill); 1250 rfkill_destroy(threeg_rfkill); 1251 } 1252 return; 1253} 1254 1255/* 1256 * sysfs interface 1257 */ 1258static ssize_t show_bool_threeg(struct device *dev, 1259 struct device_attribute *attr, char *buf) 1260{ 1261 u32 result; \ 1262 acpi_status status; 1263 if (wmi_has_guid(WMID_GUID3)) 1264 status = wmid3_get_device_status(&result, 1265 ACER_WMID3_GDS_THREEG); 1266 else 1267 status = get_u32(&result, ACER_CAP_THREEG); 1268 if (ACPI_SUCCESS(status)) 1269 return sprintf(buf, "%u\n", result); 1270 return sprintf(buf, "Read error\n"); 1271} 1272 1273static ssize_t set_bool_threeg(struct device *dev, 1274 struct device_attribute *attr, const char *buf, size_t count) 1275{ 1276 u32 tmp = simple_strtoul(buf, NULL, 10); 1277 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1278 if (ACPI_FAILURE(status)) 1279 return -EINVAL; 1280 return count; 1281} 1282static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg, 1283 set_bool_threeg); 1284 1285static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1286 char *buf) 1287{ 1288 switch (interface->type) { 1289 case ACER_AMW0: 1290 return sprintf(buf, "AMW0\n"); 1291 case ACER_AMW0_V2: 1292 return sprintf(buf, "AMW0 v2\n"); 1293 case ACER_WMID: 1294 return sprintf(buf, "WMID\n"); 1295 default: 1296 return sprintf(buf, "Error!\n"); 1297 } 1298} 1299 1300static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1301 1302static void acer_wmi_notify(u32 value, void *context) 1303{ 1304 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1305 union acpi_object *obj; 1306 struct event_return_value return_value; 1307 acpi_status status; 1308 1309 status = wmi_get_event_data(value, &response); 1310 if (status != AE_OK) { 1311 printk(ACER_WARNING "bad event status 0x%x\n", status); 1312 return; 1313 } 1314 1315 obj = (union acpi_object *)response.pointer; 1316 1317 if (!obj) 1318 return; 1319 if (obj->type != ACPI_TYPE_BUFFER) { 1320 printk(ACER_WARNING "Unknown response received %d\n", 1321 obj->type); 1322 kfree(obj); 1323 return; 1324 } 1325 if (obj->buffer.length != 8) { 1326 printk(ACER_WARNING "Unknown buffer length %d\n", 1327 obj->buffer.length); 1328 kfree(obj); 1329 return; 1330 } 1331 1332 return_value = *((struct event_return_value *)obj->buffer.pointer); 1333 kfree(obj); 1334 1335 switch (return_value.function) { 1336 case WMID_HOTKEY_EVENT: 1337 if (!sparse_keymap_report_event(acer_wmi_input_dev, 1338 return_value.key_num, 1, true)) 1339 printk(ACER_WARNING "Unknown key number - 0x%x\n", 1340 return_value.key_num); 1341 break; 1342 default: 1343 printk(ACER_WARNING "Unknown function number - %d - %d\n", 1344 return_value.function, return_value.key_num); 1345 break; 1346 } 1347} 1348 1349static acpi_status 1350wmid3_set_lm_mode(struct lm_input_params *params, 1351 struct lm_return_value *return_value) 1352{ 1353 acpi_status status; 1354 union acpi_object *obj; 1355 1356 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1357 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1358 1359 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1360 if (ACPI_FAILURE(status)) 1361 return status; 1362 1363 obj = output.pointer; 1364 1365 if (!obj) 1366 return AE_ERROR; 1367 else if (obj->type != ACPI_TYPE_BUFFER) { 1368 kfree(obj); 1369 return AE_ERROR; 1370 } 1371 if (obj->buffer.length != 4) { 1372 printk(ACER_WARNING "Unknown buffer length %d\n", 1373 obj->buffer.length); 1374 kfree(obj); 1375 return AE_ERROR; 1376 } 1377 1378 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1379 kfree(obj); 1380 1381 return status; 1382} 1383 1384static int acer_wmi_enable_ec_raw(void) 1385{ 1386 struct lm_return_value return_value; 1387 acpi_status status; 1388 struct lm_input_params params = { 1389 .function_num = 0x1, 1390 .commun_devices = 0xFFFF, 1391 .devices = 0xFFFF, 1392 .lm_status = 0x00, /* Launch Manager Deactive */ 1393 }; 1394 1395 status = wmid3_set_lm_mode(¶ms, &return_value); 1396 1397 if (return_value.error_code || return_value.ec_return_value) 1398 printk(ACER_WARNING "Enabling EC raw mode failed: " 1399 "0x%x - 0x%x\n", return_value.error_code, 1400 return_value.ec_return_value); 1401 else 1402 printk(ACER_INFO "Enabled EC raw mode"); 1403 1404 return status; 1405} 1406 1407static int acer_wmi_enable_lm(void) 1408{ 1409 struct lm_return_value return_value; 1410 acpi_status status; 1411 struct lm_input_params params = { 1412 .function_num = 0x1, 1413 .commun_devices = 0xFFFF, 1414 .devices = 0xFFFF, 1415 .lm_status = 0x01, /* Launch Manager Active */ 1416 }; 1417 1418 status = wmid3_set_lm_mode(¶ms, &return_value); 1419 1420 if (return_value.error_code || return_value.ec_return_value) 1421 printk(ACER_WARNING "Enabling Launch Manager failed: " 1422 "0x%x - 0x%x\n", return_value.error_code, 1423 return_value.ec_return_value); 1424 1425 return status; 1426} 1427 1428static int __init acer_wmi_input_setup(void) 1429{ 1430 acpi_status status; 1431 int err; 1432 1433 acer_wmi_input_dev = input_allocate_device(); 1434 if (!acer_wmi_input_dev) 1435 return -ENOMEM; 1436 1437 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1438 acer_wmi_input_dev->phys = "wmi/input0"; 1439 acer_wmi_input_dev->id.bustype = BUS_HOST; 1440 1441 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1442 if (err) 1443 goto err_free_dev; 1444 1445 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1446 acer_wmi_notify, NULL); 1447 if (ACPI_FAILURE(status)) { 1448 err = -EIO; 1449 goto err_free_keymap; 1450 } 1451 1452 err = input_register_device(acer_wmi_input_dev); 1453 if (err) 1454 goto err_uninstall_notifier; 1455 1456 return 0; 1457 1458err_uninstall_notifier: 1459 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1460err_free_keymap: 1461 sparse_keymap_free(acer_wmi_input_dev); 1462err_free_dev: 1463 input_free_device(acer_wmi_input_dev); 1464 return err; 1465} 1466 1467static void acer_wmi_input_destroy(void) 1468{ 1469 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1470 sparse_keymap_free(acer_wmi_input_dev); 1471 input_unregister_device(acer_wmi_input_dev); 1472} 1473 1474/* 1475 * debugfs functions 1476 */ 1477static u32 get_wmid_devices(void) 1478{ 1479 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1480 union acpi_object *obj; 1481 acpi_status status; 1482 u32 devices = 0; 1483 1484 status = wmi_query_block(WMID_GUID2, 1, &out); 1485 if (ACPI_FAILURE(status)) 1486 return 0; 1487 1488 obj = (union acpi_object *) out.pointer; 1489 if (obj && obj->type == ACPI_TYPE_BUFFER && 1490 obj->buffer.length == sizeof(u32)) { 1491 devices = *((u32 *) obj->buffer.pointer); 1492 } 1493 1494 kfree(out.pointer); 1495 return devices; 1496} 1497 1498/* 1499 * Platform device 1500 */ 1501static int __devinit acer_platform_probe(struct platform_device *device) 1502{ 1503 int err; 1504 1505 if (has_cap(ACER_CAP_MAILLED)) { 1506 err = acer_led_init(&device->dev); 1507 if (err) 1508 goto error_mailled; 1509 } 1510 1511 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1512 err = acer_backlight_init(&device->dev); 1513 if (err) 1514 goto error_brightness; 1515 } 1516 1517 err = acer_rfkill_init(&device->dev); 1518 if (err) 1519 goto error_rfkill; 1520 1521 return err; 1522 1523error_rfkill: 1524 if (has_cap(ACER_CAP_BRIGHTNESS)) 1525 acer_backlight_exit(); 1526error_brightness: 1527 if (has_cap(ACER_CAP_MAILLED)) 1528 acer_led_exit(); 1529error_mailled: 1530 return err; 1531} 1532 1533static int acer_platform_remove(struct platform_device *device) 1534{ 1535 if (has_cap(ACER_CAP_MAILLED)) 1536 acer_led_exit(); 1537 if (has_cap(ACER_CAP_BRIGHTNESS)) 1538 acer_backlight_exit(); 1539 1540 acer_rfkill_exit(); 1541 return 0; 1542} 1543 1544static int acer_platform_suspend(struct platform_device *dev, 1545pm_message_t state) 1546{ 1547 u32 value; 1548 struct acer_data *data = &interface->data; 1549 1550 if (!data) 1551 return -ENOMEM; 1552 1553 if (has_cap(ACER_CAP_MAILLED)) { 1554 get_u32(&value, ACER_CAP_MAILLED); 1555 data->mailled = value; 1556 } 1557 1558 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1559 get_u32(&value, ACER_CAP_BRIGHTNESS); 1560 data->brightness = value; 1561 } 1562 1563 return 0; 1564} 1565 1566static int acer_platform_resume(struct platform_device *device) 1567{ 1568 struct acer_data *data = &interface->data; 1569 1570 if (!data) 1571 return -ENOMEM; 1572 1573 if (has_cap(ACER_CAP_MAILLED)) 1574 set_u32(data->mailled, ACER_CAP_MAILLED); 1575 1576 if (has_cap(ACER_CAP_BRIGHTNESS)) 1577 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 1578 1579 return 0; 1580} 1581 1582static struct platform_driver acer_platform_driver = { 1583 .driver = { 1584 .name = "acer-wmi", 1585 .owner = THIS_MODULE, 1586 }, 1587 .probe = acer_platform_probe, 1588 .remove = acer_platform_remove, 1589 .suspend = acer_platform_suspend, 1590 .resume = acer_platform_resume, 1591}; 1592 1593static struct platform_device *acer_platform_device; 1594 1595static int remove_sysfs(struct platform_device *device) 1596{ 1597 if (has_cap(ACER_CAP_THREEG)) 1598 device_remove_file(&device->dev, &dev_attr_threeg); 1599 1600 device_remove_file(&device->dev, &dev_attr_interface); 1601 1602 return 0; 1603} 1604 1605static int create_sysfs(void) 1606{ 1607 int retval = -ENOMEM; 1608 1609 if (has_cap(ACER_CAP_THREEG)) { 1610 retval = device_create_file(&acer_platform_device->dev, 1611 &dev_attr_threeg); 1612 if (retval) 1613 goto error_sysfs; 1614 } 1615 1616 retval = device_create_file(&acer_platform_device->dev, 1617 &dev_attr_interface); 1618 if (retval) 1619 goto error_sysfs; 1620 1621 return 0; 1622 1623error_sysfs: 1624 remove_sysfs(acer_platform_device); 1625 return retval; 1626} 1627 1628static void remove_debugfs(void) 1629{ 1630 debugfs_remove(interface->debug.devices); 1631 debugfs_remove(interface->debug.root); 1632} 1633 1634static int create_debugfs(void) 1635{ 1636 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 1637 if (!interface->debug.root) { 1638 printk(ACER_ERR "Failed to create debugfs directory"); 1639 return -ENOMEM; 1640 } 1641 1642 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 1643 interface->debug.root, 1644 &interface->debug.wmid_devices); 1645 if (!interface->debug.devices) 1646 goto error_debugfs; 1647 1648 return 0; 1649 1650error_debugfs: 1651 remove_debugfs(); 1652 return -ENOMEM; 1653} 1654 1655static int __init acer_wmi_init(void) 1656{ 1657 int err; 1658 1659 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n"); 1660 1661 if (dmi_check_system(acer_blacklist)) { 1662 printk(ACER_INFO "Blacklisted hardware detected - " 1663 "not loading\n"); 1664 return -ENODEV; 1665 } 1666 1667 find_quirks(); 1668 1669 /* 1670 * Detect which ACPI-WMI interface we're using. 1671 */ 1672 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1673 interface = &AMW0_V2_interface; 1674 1675 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1676 interface = &wmid_interface; 1677 1678 if (wmi_has_guid(WMID_GUID2) && interface) { 1679 if (ACPI_FAILURE(WMID_set_capabilities())) { 1680 printk(ACER_ERR "Unable to detect available WMID " 1681 "devices\n"); 1682 return -ENODEV; 1683 } 1684 } else if (!wmi_has_guid(WMID_GUID2) && interface) { 1685 printk(ACER_ERR "No WMID device detection method found\n"); 1686 return -ENODEV; 1687 } 1688 1689 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 1690 interface = &AMW0_interface; 1691 1692 if (ACPI_FAILURE(AMW0_set_capabilities())) { 1693 printk(ACER_ERR "Unable to detect available AMW0 " 1694 "devices\n"); 1695 return -ENODEV; 1696 } 1697 } 1698 1699 if (wmi_has_guid(AMW0_GUID1)) 1700 AMW0_find_mailled(); 1701 1702 if (!interface) { 1703 printk(ACER_INFO "No or unsupported WMI interface, unable to " 1704 "load\n"); 1705 return -ENODEV; 1706 } 1707 1708 set_quirks(); 1709 1710 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) { 1711 interface->capability &= ~ACER_CAP_BRIGHTNESS; 1712 printk(ACER_INFO "Brightness must be controlled by " 1713 "generic video driver\n"); 1714 } 1715 1716 if (wmi_has_guid(WMID_GUID3)) { 1717 if (ec_raw_mode) { 1718 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 1719 printk(ACER_ERR "Cannot enable EC raw mode\n"); 1720 return -ENODEV; 1721 } 1722 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 1723 printk(ACER_ERR "Cannot enable Launch Manager mode\n"); 1724 return -ENODEV; 1725 } 1726 } else if (ec_raw_mode) { 1727 printk(ACER_INFO "No WMID EC raw mode enable method\n"); 1728 } 1729 1730 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 1731 err = acer_wmi_input_setup(); 1732 if (err) 1733 return err; 1734 } 1735 1736 err = platform_driver_register(&acer_platform_driver); 1737 if (err) { 1738 printk(ACER_ERR "Unable to register platform driver.\n"); 1739 goto error_platform_register; 1740 } 1741 1742 acer_platform_device = platform_device_alloc("acer-wmi", -1); 1743 if (!acer_platform_device) { 1744 err = -ENOMEM; 1745 goto error_device_alloc; 1746 } 1747 1748 err = platform_device_add(acer_platform_device); 1749 if (err) 1750 goto error_device_add; 1751 1752 err = create_sysfs(); 1753 if (err) 1754 goto error_create_sys; 1755 1756 if (wmi_has_guid(WMID_GUID2)) { 1757 interface->debug.wmid_devices = get_wmid_devices(); 1758 err = create_debugfs(); 1759 if (err) 1760 goto error_create_debugfs; 1761 } 1762 1763 /* Override any initial settings with values from the commandline */ 1764 acer_commandline_init(); 1765 1766 return 0; 1767 1768error_create_debugfs: 1769 remove_sysfs(acer_platform_device); 1770error_create_sys: 1771 platform_device_del(acer_platform_device); 1772error_device_add: 1773 platform_device_put(acer_platform_device); 1774error_device_alloc: 1775 platform_driver_unregister(&acer_platform_driver); 1776error_platform_register: 1777 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 1778 acer_wmi_input_destroy(); 1779 1780 return err; 1781} 1782 1783static void __exit acer_wmi_exit(void) 1784{ 1785 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 1786 acer_wmi_input_destroy(); 1787 1788 remove_sysfs(acer_platform_device); 1789 remove_debugfs(); 1790 platform_device_unregister(acer_platform_device); 1791 platform_driver_unregister(&acer_platform_driver); 1792 1793 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n"); 1794 return; 1795} 1796 1797module_init(acer_wmi_init); 1798module_exit(acer_wmi_exit); 1799