acer-wmi.c revision ca1469f5f1bb04856dec9549c111b7aec59da71e
1/* 2 * Acer WMI Laptop Extras 3 * 4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk> 5 * 6 * Based on acer_acpi: 7 * Copyright (C) 2005-2007 E.M. Smith 8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 26 27#include <linux/kernel.h> 28#include <linux/module.h> 29#include <linux/init.h> 30#include <linux/types.h> 31#include <linux/dmi.h> 32#include <linux/fb.h> 33#include <linux/backlight.h> 34#include <linux/leds.h> 35#include <linux/platform_device.h> 36#include <linux/acpi.h> 37#include <linux/i8042.h> 38#include <linux/rfkill.h> 39#include <linux/workqueue.h> 40#include <linux/debugfs.h> 41#include <linux/slab.h> 42#include <linux/input.h> 43#include <linux/input/sparse-keymap.h> 44 45#include <acpi/acpi_drivers.h> 46 47MODULE_AUTHOR("Carlos Corbacho"); 48MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); 49MODULE_LICENSE("GPL"); 50 51/* 52 * Magic Number 53 * Meaning is unknown - this number is required for writing to ACPI for AMW0 54 * (it's also used in acerhk when directly accessing the BIOS) 55 */ 56#define ACER_AMW0_WRITE 0x9610 57 58/* 59 * Bit masks for the AMW0 interface 60 */ 61#define ACER_AMW0_WIRELESS_MASK 0x35 62#define ACER_AMW0_BLUETOOTH_MASK 0x34 63#define ACER_AMW0_MAILLED_MASK 0x31 64 65/* 66 * Method IDs for WMID interface 67 */ 68#define ACER_WMID_GET_WIRELESS_METHODID 1 69#define ACER_WMID_GET_BLUETOOTH_METHODID 2 70#define ACER_WMID_GET_BRIGHTNESS_METHODID 3 71#define ACER_WMID_SET_WIRELESS_METHODID 4 72#define ACER_WMID_SET_BLUETOOTH_METHODID 5 73#define ACER_WMID_SET_BRIGHTNESS_METHODID 6 74#define ACER_WMID_GET_THREEG_METHODID 10 75#define ACER_WMID_SET_THREEG_METHODID 11 76 77/* 78 * Acer ACPI method GUIDs 79 */ 80#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" 81#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" 82#define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3" 83#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A" 84#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" 85 86/* 87 * Acer ACPI event GUIDs 88 */ 89#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" 90 91MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); 92MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"); 93MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 94 95enum acer_wmi_event_ids { 96 WMID_HOTKEY_EVENT = 0x1, 97}; 98 99static const struct key_entry acer_wmi_keymap[] = { 100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ 101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */ 102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */ 103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ 104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ 105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ 106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ 107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ 108 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */ 109 {KE_IGNORE, 0x41, {KEY_MUTE} }, 110 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} }, 111 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} }, 112 {KE_IGNORE, 0x43, {KEY_NEXTSONG} }, 113 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} }, 114 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} }, 115 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} }, 116 {KE_IGNORE, 0x45, {KEY_STOP} }, 117 {KE_IGNORE, 0x50, {KEY_STOP} }, 118 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} }, 119 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} }, 120 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} }, 121 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} }, 122 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} }, 123 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} }, 124 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 125 {KE_IGNORE, 0x81, {KEY_SLEEP} }, 126 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */ 127 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} }, 128 {KE_END, 0} 129}; 130 131static struct input_dev *acer_wmi_input_dev; 132 133struct event_return_value { 134 u8 function; 135 u8 key_num; 136 u16 device_state; 137 u32 reserved; 138} __attribute__((packed)); 139 140/* 141 * GUID3 Get Device Status device flags 142 */ 143#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 144#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 145#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */ 146#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 147 148struct lm_input_params { 149 u8 function_num; /* Function Number */ 150 u16 commun_devices; /* Communication type devices default status */ 151 u16 devices; /* Other type devices default status */ 152 u8 lm_status; /* Launch Manager Status */ 153 u16 reserved; 154} __attribute__((packed)); 155 156struct lm_return_value { 157 u8 error_code; /* Error Code */ 158 u8 ec_return_value; /* EC Return Value */ 159 u16 reserved; 160} __attribute__((packed)); 161 162struct wmid3_gds_input_param { /* Get Device Status input parameter */ 163 u8 function_num; /* Function Number */ 164 u8 hotkey_number; /* Hotkey Number */ 165 u16 devices; /* Get Device */ 166} __attribute__((packed)); 167 168struct wmid3_gds_return_value { /* Get Device Status return value*/ 169 u8 error_code; /* Error Code */ 170 u8 ec_return_value; /* EC Return Value */ 171 u16 devices; /* Current Device Status */ 172 u32 reserved; 173} __attribute__((packed)); 174 175struct hotkey_function_type_aa { 176 u8 type; 177 u8 length; 178 u16 handle; 179 u16 commun_func_bitmap; 180} __attribute__((packed)); 181 182/* 183 * Interface capability flags 184 */ 185#define ACER_CAP_MAILLED (1<<0) 186#define ACER_CAP_WIRELESS (1<<1) 187#define ACER_CAP_BLUETOOTH (1<<2) 188#define ACER_CAP_BRIGHTNESS (1<<3) 189#define ACER_CAP_THREEG (1<<4) 190#define ACER_CAP_ANY (0xFFFFFFFF) 191 192/* 193 * Interface type flags 194 */ 195enum interface_flags { 196 ACER_AMW0, 197 ACER_AMW0_V2, 198 ACER_WMID, 199 ACER_WMID_v2, 200}; 201 202#define ACER_DEFAULT_WIRELESS 0 203#define ACER_DEFAULT_BLUETOOTH 0 204#define ACER_DEFAULT_MAILLED 0 205#define ACER_DEFAULT_THREEG 0 206 207static int max_brightness = 0xF; 208 209static int mailled = -1; 210static int brightness = -1; 211static int threeg = -1; 212static int force_series; 213static bool ec_raw_mode; 214static bool has_type_aa; 215static u16 commun_func_bitmap; 216 217module_param(mailled, int, 0444); 218module_param(brightness, int, 0444); 219module_param(threeg, int, 0444); 220module_param(force_series, int, 0444); 221module_param(ec_raw_mode, bool, 0444); 222MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 223MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 224MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 225MODULE_PARM_DESC(force_series, "Force a different laptop series"); 226MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 227 228struct acer_data { 229 int mailled; 230 int threeg; 231 int brightness; 232}; 233 234struct acer_debug { 235 struct dentry *root; 236 struct dentry *devices; 237 u32 wmid_devices; 238}; 239 240static struct rfkill *wireless_rfkill; 241static struct rfkill *bluetooth_rfkill; 242static struct rfkill *threeg_rfkill; 243static bool rfkill_inited; 244 245/* Each low-level interface must define at least some of the following */ 246struct wmi_interface { 247 /* The WMI device type */ 248 u32 type; 249 250 /* The capabilities this interface provides */ 251 u32 capability; 252 253 /* Private data for the current interface */ 254 struct acer_data data; 255 256 /* debugfs entries associated with this interface */ 257 struct acer_debug debug; 258}; 259 260/* The static interface pointer, points to the currently detected interface */ 261static struct wmi_interface *interface; 262 263/* 264 * Embedded Controller quirks 265 * Some laptops require us to directly access the EC to either enable or query 266 * features that are not available through WMI. 267 */ 268 269struct quirk_entry { 270 u8 wireless; 271 u8 mailled; 272 s8 brightness; 273 u8 bluetooth; 274}; 275 276static struct quirk_entry *quirks; 277 278static void set_quirks(void) 279{ 280 if (!interface) 281 return; 282 283 if (quirks->mailled) 284 interface->capability |= ACER_CAP_MAILLED; 285 286 if (quirks->brightness) 287 interface->capability |= ACER_CAP_BRIGHTNESS; 288} 289 290static int dmi_matched(const struct dmi_system_id *dmi) 291{ 292 quirks = dmi->driver_data; 293 return 1; 294} 295 296static struct quirk_entry quirk_unknown = { 297}; 298 299static struct quirk_entry quirk_acer_aspire_1520 = { 300 .brightness = -1, 301}; 302 303static struct quirk_entry quirk_acer_travelmate_2490 = { 304 .mailled = 1, 305}; 306 307/* This AMW0 laptop has no bluetooth */ 308static struct quirk_entry quirk_medion_md_98300 = { 309 .wireless = 1, 310}; 311 312static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 313 .wireless = 2, 314}; 315 316static struct quirk_entry quirk_lenovo_ideapad_s205 = { 317 .wireless = 3, 318}; 319 320/* The Aspire One has a dummy ACPI-WMI interface - disable it */ 321static struct dmi_system_id __devinitdata acer_blacklist[] = { 322 { 323 .ident = "Acer Aspire One (SSD)", 324 .matches = { 325 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 326 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 327 }, 328 }, 329 { 330 .ident = "Acer Aspire One (HDD)", 331 .matches = { 332 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 333 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 334 }, 335 }, 336 {} 337}; 338 339static struct dmi_system_id acer_quirks[] = { 340 { 341 .callback = dmi_matched, 342 .ident = "Acer Aspire 1360", 343 .matches = { 344 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 345 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 346 }, 347 .driver_data = &quirk_acer_aspire_1520, 348 }, 349 { 350 .callback = dmi_matched, 351 .ident = "Acer Aspire 1520", 352 .matches = { 353 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 354 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 355 }, 356 .driver_data = &quirk_acer_aspire_1520, 357 }, 358 { 359 .callback = dmi_matched, 360 .ident = "Acer Aspire 3100", 361 .matches = { 362 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 363 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 364 }, 365 .driver_data = &quirk_acer_travelmate_2490, 366 }, 367 { 368 .callback = dmi_matched, 369 .ident = "Acer Aspire 3610", 370 .matches = { 371 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 372 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 373 }, 374 .driver_data = &quirk_acer_travelmate_2490, 375 }, 376 { 377 .callback = dmi_matched, 378 .ident = "Acer Aspire 5100", 379 .matches = { 380 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 381 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 382 }, 383 .driver_data = &quirk_acer_travelmate_2490, 384 }, 385 { 386 .callback = dmi_matched, 387 .ident = "Acer Aspire 5610", 388 .matches = { 389 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 390 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 391 }, 392 .driver_data = &quirk_acer_travelmate_2490, 393 }, 394 { 395 .callback = dmi_matched, 396 .ident = "Acer Aspire 5630", 397 .matches = { 398 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 399 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 400 }, 401 .driver_data = &quirk_acer_travelmate_2490, 402 }, 403 { 404 .callback = dmi_matched, 405 .ident = "Acer Aspire 5650", 406 .matches = { 407 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 408 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 409 }, 410 .driver_data = &quirk_acer_travelmate_2490, 411 }, 412 { 413 .callback = dmi_matched, 414 .ident = "Acer Aspire 5680", 415 .matches = { 416 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 417 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 418 }, 419 .driver_data = &quirk_acer_travelmate_2490, 420 }, 421 { 422 .callback = dmi_matched, 423 .ident = "Acer Aspire 9110", 424 .matches = { 425 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 426 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 427 }, 428 .driver_data = &quirk_acer_travelmate_2490, 429 }, 430 { 431 .callback = dmi_matched, 432 .ident = "Acer TravelMate 2490", 433 .matches = { 434 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 435 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 436 }, 437 .driver_data = &quirk_acer_travelmate_2490, 438 }, 439 { 440 .callback = dmi_matched, 441 .ident = "Acer TravelMate 4200", 442 .matches = { 443 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 444 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 445 }, 446 .driver_data = &quirk_acer_travelmate_2490, 447 }, 448 { 449 .callback = dmi_matched, 450 .ident = "Fujitsu Siemens Amilo Li 1718", 451 .matches = { 452 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 453 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 454 }, 455 .driver_data = &quirk_fujitsu_amilo_li_1718, 456 }, 457 { 458 .callback = dmi_matched, 459 .ident = "Medion MD 98300", 460 .matches = { 461 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 462 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 463 }, 464 .driver_data = &quirk_medion_md_98300, 465 }, 466 { 467 .callback = dmi_matched, 468 .ident = "Lenovo Ideapad S205", 469 .matches = { 470 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 471 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"), 472 }, 473 .driver_data = &quirk_lenovo_ideapad_s205, 474 }, 475 { 476 .callback = dmi_matched, 477 .ident = "Lenovo 3000 N200", 478 .matches = { 479 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 480 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"), 481 }, 482 .driver_data = &quirk_fujitsu_amilo_li_1718, 483 }, 484 {} 485}; 486 487/* Find which quirks are needed for a particular vendor/ model pair */ 488static void find_quirks(void) 489{ 490 if (!force_series) { 491 dmi_check_system(acer_quirks); 492 } else if (force_series == 2490) { 493 quirks = &quirk_acer_travelmate_2490; 494 } 495 496 if (quirks == NULL) 497 quirks = &quirk_unknown; 498 499 set_quirks(); 500} 501 502/* 503 * General interface convenience methods 504 */ 505 506static bool has_cap(u32 cap) 507{ 508 if ((interface->capability & cap) != 0) 509 return 1; 510 511 return 0; 512} 513 514/* 515 * AMW0 (V1) interface 516 */ 517struct wmab_args { 518 u32 eax; 519 u32 ebx; 520 u32 ecx; 521 u32 edx; 522}; 523 524struct wmab_ret { 525 u32 eax; 526 u32 ebx; 527 u32 ecx; 528 u32 edx; 529 u32 eex; 530}; 531 532static acpi_status wmab_execute(struct wmab_args *regbuf, 533struct acpi_buffer *result) 534{ 535 struct acpi_buffer input; 536 acpi_status status; 537 input.length = sizeof(struct wmab_args); 538 input.pointer = (u8 *)regbuf; 539 540 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 541 542 return status; 543} 544 545static acpi_status AMW0_get_u32(u32 *value, u32 cap) 546{ 547 int err; 548 u8 result; 549 550 switch (cap) { 551 case ACER_CAP_MAILLED: 552 switch (quirks->mailled) { 553 default: 554 err = ec_read(0xA, &result); 555 if (err) 556 return AE_ERROR; 557 *value = (result >> 7) & 0x1; 558 return AE_OK; 559 } 560 break; 561 case ACER_CAP_WIRELESS: 562 switch (quirks->wireless) { 563 case 1: 564 err = ec_read(0x7B, &result); 565 if (err) 566 return AE_ERROR; 567 *value = result & 0x1; 568 return AE_OK; 569 case 2: 570 err = ec_read(0x71, &result); 571 if (err) 572 return AE_ERROR; 573 *value = result & 0x1; 574 return AE_OK; 575 case 3: 576 err = ec_read(0x78, &result); 577 if (err) 578 return AE_ERROR; 579 *value = result & 0x1; 580 return AE_OK; 581 default: 582 err = ec_read(0xA, &result); 583 if (err) 584 return AE_ERROR; 585 *value = (result >> 2) & 0x1; 586 return AE_OK; 587 } 588 break; 589 case ACER_CAP_BLUETOOTH: 590 switch (quirks->bluetooth) { 591 default: 592 err = ec_read(0xA, &result); 593 if (err) 594 return AE_ERROR; 595 *value = (result >> 4) & 0x1; 596 return AE_OK; 597 } 598 break; 599 case ACER_CAP_BRIGHTNESS: 600 switch (quirks->brightness) { 601 default: 602 err = ec_read(0x83, &result); 603 if (err) 604 return AE_ERROR; 605 *value = result; 606 return AE_OK; 607 } 608 break; 609 default: 610 return AE_ERROR; 611 } 612 return AE_OK; 613} 614 615static acpi_status AMW0_set_u32(u32 value, u32 cap) 616{ 617 struct wmab_args args; 618 619 args.eax = ACER_AMW0_WRITE; 620 args.ebx = value ? (1<<8) : 0; 621 args.ecx = args.edx = 0; 622 623 switch (cap) { 624 case ACER_CAP_MAILLED: 625 if (value > 1) 626 return AE_BAD_PARAMETER; 627 args.ebx |= ACER_AMW0_MAILLED_MASK; 628 break; 629 case ACER_CAP_WIRELESS: 630 if (value > 1) 631 return AE_BAD_PARAMETER; 632 args.ebx |= ACER_AMW0_WIRELESS_MASK; 633 break; 634 case ACER_CAP_BLUETOOTH: 635 if (value > 1) 636 return AE_BAD_PARAMETER; 637 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 638 break; 639 case ACER_CAP_BRIGHTNESS: 640 if (value > max_brightness) 641 return AE_BAD_PARAMETER; 642 switch (quirks->brightness) { 643 default: 644 return ec_write(0x83, value); 645 break; 646 } 647 default: 648 return AE_ERROR; 649 } 650 651 /* Actually do the set */ 652 return wmab_execute(&args, NULL); 653} 654 655static acpi_status AMW0_find_mailled(void) 656{ 657 struct wmab_args args; 658 struct wmab_ret ret; 659 acpi_status status = AE_OK; 660 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 661 union acpi_object *obj; 662 663 args.eax = 0x86; 664 args.ebx = args.ecx = args.edx = 0; 665 666 status = wmab_execute(&args, &out); 667 if (ACPI_FAILURE(status)) 668 return status; 669 670 obj = (union acpi_object *) out.pointer; 671 if (obj && obj->type == ACPI_TYPE_BUFFER && 672 obj->buffer.length == sizeof(struct wmab_ret)) { 673 ret = *((struct wmab_ret *) obj->buffer.pointer); 674 } else { 675 kfree(out.pointer); 676 return AE_ERROR; 677 } 678 679 if (ret.eex & 0x1) 680 interface->capability |= ACER_CAP_MAILLED; 681 682 kfree(out.pointer); 683 684 return AE_OK; 685} 686 687static int AMW0_set_cap_acpi_check_device_found; 688 689static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle, 690 u32 level, void *context, void **retval) 691{ 692 AMW0_set_cap_acpi_check_device_found = 1; 693 return AE_OK; 694} 695 696static const struct acpi_device_id norfkill_ids[] = { 697 { "VPC2004", 0}, 698 { "IBM0068", 0}, 699 { "LEN0068", 0}, 700 { "", 0}, 701}; 702 703static int AMW0_set_cap_acpi_check_device(void) 704{ 705 const struct acpi_device_id *id; 706 707 for (id = norfkill_ids; id->id[0]; id++) 708 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb, 709 NULL, NULL); 710 return AMW0_set_cap_acpi_check_device_found; 711} 712 713static acpi_status AMW0_set_capabilities(void) 714{ 715 struct wmab_args args; 716 struct wmab_ret ret; 717 acpi_status status; 718 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 719 union acpi_object *obj; 720 721 /* 722 * On laptops with this strange GUID (non Acer), normal probing doesn't 723 * work. 724 */ 725 if (wmi_has_guid(AMW0_GUID2)) { 726 if ((quirks != &quirk_unknown) || 727 !AMW0_set_cap_acpi_check_device()) 728 interface->capability |= ACER_CAP_WIRELESS; 729 return AE_OK; 730 } 731 732 args.eax = ACER_AMW0_WRITE; 733 args.ecx = args.edx = 0; 734 735 args.ebx = 0xa2 << 8; 736 args.ebx |= ACER_AMW0_WIRELESS_MASK; 737 738 status = wmab_execute(&args, &out); 739 if (ACPI_FAILURE(status)) 740 return status; 741 742 obj = out.pointer; 743 if (obj && obj->type == ACPI_TYPE_BUFFER && 744 obj->buffer.length == sizeof(struct wmab_ret)) { 745 ret = *((struct wmab_ret *) obj->buffer.pointer); 746 } else { 747 status = AE_ERROR; 748 goto out; 749 } 750 751 if (ret.eax & 0x1) 752 interface->capability |= ACER_CAP_WIRELESS; 753 754 args.ebx = 2 << 8; 755 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 756 757 /* 758 * It's ok to use existing buffer for next wmab_execute call. 759 * But we need to kfree(out.pointer) if next wmab_execute fail. 760 */ 761 status = wmab_execute(&args, &out); 762 if (ACPI_FAILURE(status)) 763 goto out; 764 765 obj = (union acpi_object *) out.pointer; 766 if (obj && obj->type == ACPI_TYPE_BUFFER 767 && obj->buffer.length == sizeof(struct wmab_ret)) { 768 ret = *((struct wmab_ret *) obj->buffer.pointer); 769 } else { 770 status = AE_ERROR; 771 goto out; 772 } 773 774 if (ret.eax & 0x1) 775 interface->capability |= ACER_CAP_BLUETOOTH; 776 777 /* 778 * This appears to be safe to enable, since all Wistron based laptops 779 * appear to use the same EC register for brightness, even if they 780 * differ for wireless, etc 781 */ 782 if (quirks->brightness >= 0) 783 interface->capability |= ACER_CAP_BRIGHTNESS; 784 785 status = AE_OK; 786out: 787 kfree(out.pointer); 788 return status; 789} 790 791static struct wmi_interface AMW0_interface = { 792 .type = ACER_AMW0, 793}; 794 795static struct wmi_interface AMW0_V2_interface = { 796 .type = ACER_AMW0_V2, 797}; 798 799/* 800 * New interface (The WMID interface) 801 */ 802static acpi_status 803WMI_execute_u32(u32 method_id, u32 in, u32 *out) 804{ 805 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 806 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 807 union acpi_object *obj; 808 u32 tmp; 809 acpi_status status; 810 811 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 812 813 if (ACPI_FAILURE(status)) 814 return status; 815 816 obj = (union acpi_object *) result.pointer; 817 if (obj && obj->type == ACPI_TYPE_BUFFER && 818 (obj->buffer.length == sizeof(u32) || 819 obj->buffer.length == sizeof(u64))) { 820 tmp = *((u32 *) obj->buffer.pointer); 821 } else if (obj->type == ACPI_TYPE_INTEGER) { 822 tmp = (u32) obj->integer.value; 823 } else { 824 tmp = 0; 825 } 826 827 if (out) 828 *out = tmp; 829 830 kfree(result.pointer); 831 832 return status; 833} 834 835static acpi_status WMID_get_u32(u32 *value, u32 cap) 836{ 837 acpi_status status; 838 u8 tmp; 839 u32 result, method_id = 0; 840 841 switch (cap) { 842 case ACER_CAP_WIRELESS: 843 method_id = ACER_WMID_GET_WIRELESS_METHODID; 844 break; 845 case ACER_CAP_BLUETOOTH: 846 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 847 break; 848 case ACER_CAP_BRIGHTNESS: 849 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 850 break; 851 case ACER_CAP_THREEG: 852 method_id = ACER_WMID_GET_THREEG_METHODID; 853 break; 854 case ACER_CAP_MAILLED: 855 if (quirks->mailled == 1) { 856 ec_read(0x9f, &tmp); 857 *value = tmp & 0x1; 858 return 0; 859 } 860 default: 861 return AE_ERROR; 862 } 863 status = WMI_execute_u32(method_id, 0, &result); 864 865 if (ACPI_SUCCESS(status)) 866 *value = (u8)result; 867 868 return status; 869} 870 871static acpi_status WMID_set_u32(u32 value, u32 cap) 872{ 873 u32 method_id = 0; 874 char param; 875 876 switch (cap) { 877 case ACER_CAP_BRIGHTNESS: 878 if (value > max_brightness) 879 return AE_BAD_PARAMETER; 880 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 881 break; 882 case ACER_CAP_WIRELESS: 883 if (value > 1) 884 return AE_BAD_PARAMETER; 885 method_id = ACER_WMID_SET_WIRELESS_METHODID; 886 break; 887 case ACER_CAP_BLUETOOTH: 888 if (value > 1) 889 return AE_BAD_PARAMETER; 890 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 891 break; 892 case ACER_CAP_THREEG: 893 if (value > 1) 894 return AE_BAD_PARAMETER; 895 method_id = ACER_WMID_SET_THREEG_METHODID; 896 break; 897 case ACER_CAP_MAILLED: 898 if (value > 1) 899 return AE_BAD_PARAMETER; 900 if (quirks->mailled == 1) { 901 param = value ? 0x92 : 0x93; 902 i8042_lock_chip(); 903 i8042_command(¶m, 0x1059); 904 i8042_unlock_chip(); 905 return 0; 906 } 907 break; 908 default: 909 return AE_ERROR; 910 } 911 return WMI_execute_u32(method_id, (u32)value, NULL); 912} 913 914static acpi_status wmid3_get_device_status(u32 *value, u16 device) 915{ 916 struct wmid3_gds_return_value return_value; 917 acpi_status status; 918 union acpi_object *obj; 919 struct wmid3_gds_input_param params = { 920 .function_num = 0x1, 921 .hotkey_number = 0x01, 922 .devices = device, 923 }; 924 struct acpi_buffer input = { 925 sizeof(struct wmid3_gds_input_param), 926 ¶ms 927 }; 928 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 929 930 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 931 if (ACPI_FAILURE(status)) 932 return status; 933 934 obj = output.pointer; 935 936 if (!obj) 937 return AE_ERROR; 938 else if (obj->type != ACPI_TYPE_BUFFER) { 939 kfree(obj); 940 return AE_ERROR; 941 } 942 if (obj->buffer.length != 8) { 943 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 944 kfree(obj); 945 return AE_ERROR; 946 } 947 948 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 949 kfree(obj); 950 951 if (return_value.error_code || return_value.ec_return_value) 952 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n", 953 device, 954 return_value.error_code, 955 return_value.ec_return_value); 956 else 957 *value = !!(return_value.devices & device); 958 959 return status; 960} 961 962static acpi_status wmid_v2_get_u32(u32 *value, u32 cap) 963{ 964 u16 device; 965 966 switch (cap) { 967 case ACER_CAP_WIRELESS: 968 device = ACER_WMID3_GDS_WIRELESS; 969 break; 970 case ACER_CAP_BLUETOOTH: 971 device = ACER_WMID3_GDS_BLUETOOTH; 972 break; 973 case ACER_CAP_THREEG: 974 device = ACER_WMID3_GDS_THREEG; 975 break; 976 default: 977 return AE_ERROR; 978 } 979 return wmid3_get_device_status(value, device); 980} 981 982static acpi_status wmid3_set_device_status(u32 value, u16 device) 983{ 984 struct wmid3_gds_return_value return_value; 985 acpi_status status; 986 union acpi_object *obj; 987 u16 devices; 988 struct wmid3_gds_input_param params = { 989 .function_num = 0x1, 990 .hotkey_number = 0x01, 991 .devices = commun_func_bitmap, 992 }; 993 struct acpi_buffer input = { 994 sizeof(struct wmid3_gds_input_param), 995 ¶ms 996 }; 997 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 998 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL }; 999 1000 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 1001 if (ACPI_FAILURE(status)) 1002 return status; 1003 1004 obj = output.pointer; 1005 1006 if (!obj) 1007 return AE_ERROR; 1008 else if (obj->type != ACPI_TYPE_BUFFER) { 1009 kfree(obj); 1010 return AE_ERROR; 1011 } 1012 if (obj->buffer.length != 8) { 1013 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1014 kfree(obj); 1015 return AE_ERROR; 1016 } 1017 1018 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1019 kfree(obj); 1020 1021 if (return_value.error_code || return_value.ec_return_value) { 1022 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n", 1023 return_value.error_code, 1024 return_value.ec_return_value); 1025 return status; 1026 } 1027 1028 devices = return_value.devices; 1029 params.function_num = 0x2; 1030 params.hotkey_number = 0x01; 1031 params.devices = (value) ? (devices | device) : (devices & ~device); 1032 1033 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2); 1034 if (ACPI_FAILURE(status)) 1035 return status; 1036 1037 obj = output2.pointer; 1038 1039 if (!obj) 1040 return AE_ERROR; 1041 else if (obj->type != ACPI_TYPE_BUFFER) { 1042 kfree(obj); 1043 return AE_ERROR; 1044 } 1045 if (obj->buffer.length != 4) { 1046 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1047 kfree(obj); 1048 return AE_ERROR; 1049 } 1050 1051 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1052 kfree(obj); 1053 1054 if (return_value.error_code || return_value.ec_return_value) 1055 pr_warn("Set Device Status failed: 0x%x - 0x%x\n", 1056 return_value.error_code, 1057 return_value.ec_return_value); 1058 1059 return status; 1060} 1061 1062static acpi_status wmid_v2_set_u32(u32 value, u32 cap) 1063{ 1064 u16 device; 1065 1066 switch (cap) { 1067 case ACER_CAP_WIRELESS: 1068 device = ACER_WMID3_GDS_WIRELESS; 1069 break; 1070 case ACER_CAP_BLUETOOTH: 1071 device = ACER_WMID3_GDS_BLUETOOTH; 1072 break; 1073 case ACER_CAP_THREEG: 1074 device = ACER_WMID3_GDS_THREEG; 1075 break; 1076 default: 1077 return AE_ERROR; 1078 } 1079 return wmid3_set_device_status(value, device); 1080} 1081 1082static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 1083{ 1084 struct hotkey_function_type_aa *type_aa; 1085 1086 /* We are looking for OEM-specific Type AAh */ 1087 if (header->type != 0xAA) 1088 return; 1089 1090 has_type_aa = true; 1091 type_aa = (struct hotkey_function_type_aa *) header; 1092 1093 pr_info("Function bitmap for Communication Button: 0x%x\n", 1094 type_aa->commun_func_bitmap); 1095 commun_func_bitmap = type_aa->commun_func_bitmap; 1096 1097 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 1098 interface->capability |= ACER_CAP_WIRELESS; 1099 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 1100 interface->capability |= ACER_CAP_THREEG; 1101 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 1102 interface->capability |= ACER_CAP_BLUETOOTH; 1103} 1104 1105static acpi_status WMID_set_capabilities(void) 1106{ 1107 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1108 union acpi_object *obj; 1109 acpi_status status; 1110 u32 devices; 1111 1112 status = wmi_query_block(WMID_GUID2, 1, &out); 1113 if (ACPI_FAILURE(status)) 1114 return status; 1115 1116 obj = (union acpi_object *) out.pointer; 1117 if (obj && obj->type == ACPI_TYPE_BUFFER && 1118 (obj->buffer.length == sizeof(u32) || 1119 obj->buffer.length == sizeof(u64))) { 1120 devices = *((u32 *) obj->buffer.pointer); 1121 } else if (obj->type == ACPI_TYPE_INTEGER) { 1122 devices = (u32) obj->integer.value; 1123 } else { 1124 kfree(out.pointer); 1125 return AE_ERROR; 1126 } 1127 1128 pr_info("Function bitmap for Communication Device: 0x%x\n", devices); 1129 if (devices & 0x07) 1130 interface->capability |= ACER_CAP_WIRELESS; 1131 if (devices & 0x40) 1132 interface->capability |= ACER_CAP_THREEG; 1133 if (devices & 0x10) 1134 interface->capability |= ACER_CAP_BLUETOOTH; 1135 1136 if (!(devices & 0x20)) 1137 max_brightness = 0x9; 1138 1139 kfree(out.pointer); 1140 return status; 1141} 1142 1143static struct wmi_interface wmid_interface = { 1144 .type = ACER_WMID, 1145}; 1146 1147static struct wmi_interface wmid_v2_interface = { 1148 .type = ACER_WMID_v2, 1149}; 1150 1151/* 1152 * Generic Device (interface-independent) 1153 */ 1154 1155static acpi_status get_u32(u32 *value, u32 cap) 1156{ 1157 acpi_status status = AE_ERROR; 1158 1159 switch (interface->type) { 1160 case ACER_AMW0: 1161 status = AMW0_get_u32(value, cap); 1162 break; 1163 case ACER_AMW0_V2: 1164 if (cap == ACER_CAP_MAILLED) { 1165 status = AMW0_get_u32(value, cap); 1166 break; 1167 } 1168 case ACER_WMID: 1169 status = WMID_get_u32(value, cap); 1170 break; 1171 case ACER_WMID_v2: 1172 if (cap & (ACER_CAP_WIRELESS | 1173 ACER_CAP_BLUETOOTH | 1174 ACER_CAP_THREEG)) 1175 status = wmid_v2_get_u32(value, cap); 1176 else if (wmi_has_guid(WMID_GUID2)) 1177 status = WMID_get_u32(value, cap); 1178 break; 1179 } 1180 1181 return status; 1182} 1183 1184static acpi_status set_u32(u32 value, u32 cap) 1185{ 1186 acpi_status status; 1187 1188 if (interface->capability & cap) { 1189 switch (interface->type) { 1190 case ACER_AMW0: 1191 return AMW0_set_u32(value, cap); 1192 case ACER_AMW0_V2: 1193 if (cap == ACER_CAP_MAILLED) 1194 return AMW0_set_u32(value, cap); 1195 1196 /* 1197 * On some models, some WMID methods don't toggle 1198 * properly. For those cases, we want to run the AMW0 1199 * method afterwards to be certain we've really toggled 1200 * the device state. 1201 */ 1202 if (cap == ACER_CAP_WIRELESS || 1203 cap == ACER_CAP_BLUETOOTH) { 1204 status = WMID_set_u32(value, cap); 1205 if (ACPI_FAILURE(status)) 1206 return status; 1207 1208 return AMW0_set_u32(value, cap); 1209 } 1210 case ACER_WMID: 1211 return WMID_set_u32(value, cap); 1212 case ACER_WMID_v2: 1213 if (cap & (ACER_CAP_WIRELESS | 1214 ACER_CAP_BLUETOOTH | 1215 ACER_CAP_THREEG)) 1216 return wmid_v2_set_u32(value, cap); 1217 else if (wmi_has_guid(WMID_GUID2)) 1218 return WMID_set_u32(value, cap); 1219 default: 1220 return AE_BAD_PARAMETER; 1221 } 1222 } 1223 return AE_BAD_PARAMETER; 1224} 1225 1226static void __init acer_commandline_init(void) 1227{ 1228 /* 1229 * These will all fail silently if the value given is invalid, or the 1230 * capability isn't available on the given interface 1231 */ 1232 if (mailled >= 0) 1233 set_u32(mailled, ACER_CAP_MAILLED); 1234 if (!has_type_aa && threeg >= 0) 1235 set_u32(threeg, ACER_CAP_THREEG); 1236 if (brightness >= 0) 1237 set_u32(brightness, ACER_CAP_BRIGHTNESS); 1238} 1239 1240/* 1241 * LED device (Mail LED only, no other LEDs known yet) 1242 */ 1243static void mail_led_set(struct led_classdev *led_cdev, 1244enum led_brightness value) 1245{ 1246 set_u32(value, ACER_CAP_MAILLED); 1247} 1248 1249static struct led_classdev mail_led = { 1250 .name = "acer-wmi::mail", 1251 .brightness_set = mail_led_set, 1252}; 1253 1254static int __devinit acer_led_init(struct device *dev) 1255{ 1256 return led_classdev_register(dev, &mail_led); 1257} 1258 1259static void acer_led_exit(void) 1260{ 1261 set_u32(LED_OFF, ACER_CAP_MAILLED); 1262 led_classdev_unregister(&mail_led); 1263} 1264 1265/* 1266 * Backlight device 1267 */ 1268static struct backlight_device *acer_backlight_device; 1269 1270static int read_brightness(struct backlight_device *bd) 1271{ 1272 u32 value; 1273 get_u32(&value, ACER_CAP_BRIGHTNESS); 1274 return value; 1275} 1276 1277static int update_bl_status(struct backlight_device *bd) 1278{ 1279 int intensity = bd->props.brightness; 1280 1281 if (bd->props.power != FB_BLANK_UNBLANK) 1282 intensity = 0; 1283 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1284 intensity = 0; 1285 1286 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1287 1288 return 0; 1289} 1290 1291static const struct backlight_ops acer_bl_ops = { 1292 .get_brightness = read_brightness, 1293 .update_status = update_bl_status, 1294}; 1295 1296static int __devinit acer_backlight_init(struct device *dev) 1297{ 1298 struct backlight_properties props; 1299 struct backlight_device *bd; 1300 1301 memset(&props, 0, sizeof(struct backlight_properties)); 1302 props.type = BACKLIGHT_PLATFORM; 1303 props.max_brightness = max_brightness; 1304 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1305 &props); 1306 if (IS_ERR(bd)) { 1307 pr_err("Could not register Acer backlight device\n"); 1308 acer_backlight_device = NULL; 1309 return PTR_ERR(bd); 1310 } 1311 1312 acer_backlight_device = bd; 1313 1314 bd->props.power = FB_BLANK_UNBLANK; 1315 bd->props.brightness = read_brightness(bd); 1316 backlight_update_status(bd); 1317 return 0; 1318} 1319 1320static void acer_backlight_exit(void) 1321{ 1322 backlight_device_unregister(acer_backlight_device); 1323} 1324 1325/* 1326 * Rfkill devices 1327 */ 1328static void acer_rfkill_update(struct work_struct *ignored); 1329static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1330static void acer_rfkill_update(struct work_struct *ignored) 1331{ 1332 u32 state; 1333 acpi_status status; 1334 1335 if (has_cap(ACER_CAP_WIRELESS)) { 1336 status = get_u32(&state, ACER_CAP_WIRELESS); 1337 if (ACPI_SUCCESS(status)) { 1338 if (quirks->wireless == 3) 1339 rfkill_set_hw_state(wireless_rfkill, !state); 1340 else 1341 rfkill_set_sw_state(wireless_rfkill, !state); 1342 } 1343 } 1344 1345 if (has_cap(ACER_CAP_BLUETOOTH)) { 1346 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1347 if (ACPI_SUCCESS(status)) 1348 rfkill_set_sw_state(bluetooth_rfkill, !state); 1349 } 1350 1351 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1352 status = get_u32(&state, ACER_WMID3_GDS_THREEG); 1353 if (ACPI_SUCCESS(status)) 1354 rfkill_set_sw_state(threeg_rfkill, !state); 1355 } 1356 1357 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1358} 1359 1360static int acer_rfkill_set(void *data, bool blocked) 1361{ 1362 acpi_status status; 1363 u32 cap = (unsigned long)data; 1364 1365 if (rfkill_inited) { 1366 status = set_u32(!blocked, cap); 1367 if (ACPI_FAILURE(status)) 1368 return -ENODEV; 1369 } 1370 1371 return 0; 1372} 1373 1374static const struct rfkill_ops acer_rfkill_ops = { 1375 .set_block = acer_rfkill_set, 1376}; 1377 1378static struct rfkill *acer_rfkill_register(struct device *dev, 1379 enum rfkill_type type, 1380 char *name, u32 cap) 1381{ 1382 int err; 1383 struct rfkill *rfkill_dev; 1384 u32 state; 1385 acpi_status status; 1386 1387 rfkill_dev = rfkill_alloc(name, dev, type, 1388 &acer_rfkill_ops, 1389 (void *)(unsigned long)cap); 1390 if (!rfkill_dev) 1391 return ERR_PTR(-ENOMEM); 1392 1393 status = get_u32(&state, cap); 1394 1395 err = rfkill_register(rfkill_dev); 1396 if (err) { 1397 rfkill_destroy(rfkill_dev); 1398 return ERR_PTR(err); 1399 } 1400 1401 if (ACPI_SUCCESS(status)) 1402 rfkill_set_sw_state(rfkill_dev, !state); 1403 1404 return rfkill_dev; 1405} 1406 1407static int acer_rfkill_init(struct device *dev) 1408{ 1409 int err; 1410 1411 if (has_cap(ACER_CAP_WIRELESS)) { 1412 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1413 "acer-wireless", ACER_CAP_WIRELESS); 1414 if (IS_ERR(wireless_rfkill)) { 1415 err = PTR_ERR(wireless_rfkill); 1416 goto error_wireless; 1417 } 1418 } 1419 1420 if (has_cap(ACER_CAP_BLUETOOTH)) { 1421 bluetooth_rfkill = acer_rfkill_register(dev, 1422 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1423 ACER_CAP_BLUETOOTH); 1424 if (IS_ERR(bluetooth_rfkill)) { 1425 err = PTR_ERR(bluetooth_rfkill); 1426 goto error_bluetooth; 1427 } 1428 } 1429 1430 if (has_cap(ACER_CAP_THREEG)) { 1431 threeg_rfkill = acer_rfkill_register(dev, 1432 RFKILL_TYPE_WWAN, "acer-threeg", 1433 ACER_CAP_THREEG); 1434 if (IS_ERR(threeg_rfkill)) { 1435 err = PTR_ERR(threeg_rfkill); 1436 goto error_threeg; 1437 } 1438 } 1439 1440 rfkill_inited = true; 1441 1442 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1443 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1444 schedule_delayed_work(&acer_rfkill_work, 1445 round_jiffies_relative(HZ)); 1446 1447 return 0; 1448 1449error_threeg: 1450 if (has_cap(ACER_CAP_BLUETOOTH)) { 1451 rfkill_unregister(bluetooth_rfkill); 1452 rfkill_destroy(bluetooth_rfkill); 1453 } 1454error_bluetooth: 1455 if (has_cap(ACER_CAP_WIRELESS)) { 1456 rfkill_unregister(wireless_rfkill); 1457 rfkill_destroy(wireless_rfkill); 1458 } 1459error_wireless: 1460 return err; 1461} 1462 1463static void acer_rfkill_exit(void) 1464{ 1465 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1466 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1467 cancel_delayed_work_sync(&acer_rfkill_work); 1468 1469 if (has_cap(ACER_CAP_WIRELESS)) { 1470 rfkill_unregister(wireless_rfkill); 1471 rfkill_destroy(wireless_rfkill); 1472 } 1473 1474 if (has_cap(ACER_CAP_BLUETOOTH)) { 1475 rfkill_unregister(bluetooth_rfkill); 1476 rfkill_destroy(bluetooth_rfkill); 1477 } 1478 1479 if (has_cap(ACER_CAP_THREEG)) { 1480 rfkill_unregister(threeg_rfkill); 1481 rfkill_destroy(threeg_rfkill); 1482 } 1483 return; 1484} 1485 1486/* 1487 * sysfs interface 1488 */ 1489static ssize_t show_bool_threeg(struct device *dev, 1490 struct device_attribute *attr, char *buf) 1491{ 1492 u32 result; \ 1493 acpi_status status; 1494 1495 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1496 current->comm); 1497 status = get_u32(&result, ACER_CAP_THREEG); 1498 if (ACPI_SUCCESS(status)) 1499 return sprintf(buf, "%u\n", result); 1500 return sprintf(buf, "Read error\n"); 1501} 1502 1503static ssize_t set_bool_threeg(struct device *dev, 1504 struct device_attribute *attr, const char *buf, size_t count) 1505{ 1506 u32 tmp = simple_strtoul(buf, NULL, 10); 1507 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1508 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1509 current->comm); 1510 if (ACPI_FAILURE(status)) 1511 return -EINVAL; 1512 return count; 1513} 1514static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg, 1515 set_bool_threeg); 1516 1517static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1518 char *buf) 1519{ 1520 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n", 1521 current->comm); 1522 switch (interface->type) { 1523 case ACER_AMW0: 1524 return sprintf(buf, "AMW0\n"); 1525 case ACER_AMW0_V2: 1526 return sprintf(buf, "AMW0 v2\n"); 1527 case ACER_WMID: 1528 return sprintf(buf, "WMID\n"); 1529 case ACER_WMID_v2: 1530 return sprintf(buf, "WMID v2\n"); 1531 default: 1532 return sprintf(buf, "Error!\n"); 1533 } 1534} 1535 1536static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1537 1538static void acer_wmi_notify(u32 value, void *context) 1539{ 1540 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1541 union acpi_object *obj; 1542 struct event_return_value return_value; 1543 acpi_status status; 1544 u16 device_state; 1545 const struct key_entry *key; 1546 1547 status = wmi_get_event_data(value, &response); 1548 if (status != AE_OK) { 1549 pr_warn("bad event status 0x%x\n", status); 1550 return; 1551 } 1552 1553 obj = (union acpi_object *)response.pointer; 1554 1555 if (!obj) 1556 return; 1557 if (obj->type != ACPI_TYPE_BUFFER) { 1558 pr_warn("Unknown response received %d\n", obj->type); 1559 kfree(obj); 1560 return; 1561 } 1562 if (obj->buffer.length != 8) { 1563 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1564 kfree(obj); 1565 return; 1566 } 1567 1568 return_value = *((struct event_return_value *)obj->buffer.pointer); 1569 kfree(obj); 1570 1571 switch (return_value.function) { 1572 case WMID_HOTKEY_EVENT: 1573 device_state = return_value.device_state; 1574 pr_debug("device state: 0x%x\n", device_state); 1575 1576 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev, 1577 return_value.key_num); 1578 if (!key) { 1579 pr_warn("Unknown key number - 0x%x\n", 1580 return_value.key_num); 1581 } else { 1582 switch (key->keycode) { 1583 case KEY_WLAN: 1584 case KEY_BLUETOOTH: 1585 if (has_cap(ACER_CAP_WIRELESS)) 1586 rfkill_set_sw_state(wireless_rfkill, 1587 !(device_state & ACER_WMID3_GDS_WIRELESS)); 1588 if (has_cap(ACER_CAP_THREEG)) 1589 rfkill_set_sw_state(threeg_rfkill, 1590 !(device_state & ACER_WMID3_GDS_THREEG)); 1591 if (has_cap(ACER_CAP_BLUETOOTH)) 1592 rfkill_set_sw_state(bluetooth_rfkill, 1593 !(device_state & ACER_WMID3_GDS_BLUETOOTH)); 1594 break; 1595 } 1596 sparse_keymap_report_entry(acer_wmi_input_dev, key, 1597 1, true); 1598 } 1599 break; 1600 default: 1601 pr_warn("Unknown function number - %d - %d\n", 1602 return_value.function, return_value.key_num); 1603 break; 1604 } 1605} 1606 1607static acpi_status 1608wmid3_set_lm_mode(struct lm_input_params *params, 1609 struct lm_return_value *return_value) 1610{ 1611 acpi_status status; 1612 union acpi_object *obj; 1613 1614 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1615 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1616 1617 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1618 if (ACPI_FAILURE(status)) 1619 return status; 1620 1621 obj = output.pointer; 1622 1623 if (!obj) 1624 return AE_ERROR; 1625 else if (obj->type != ACPI_TYPE_BUFFER) { 1626 kfree(obj); 1627 return AE_ERROR; 1628 } 1629 if (obj->buffer.length != 4) { 1630 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1631 kfree(obj); 1632 return AE_ERROR; 1633 } 1634 1635 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1636 kfree(obj); 1637 1638 return status; 1639} 1640 1641static int acer_wmi_enable_ec_raw(void) 1642{ 1643 struct lm_return_value return_value; 1644 acpi_status status; 1645 struct lm_input_params params = { 1646 .function_num = 0x1, 1647 .commun_devices = 0xFFFF, 1648 .devices = 0xFFFF, 1649 .lm_status = 0x00, /* Launch Manager Deactive */ 1650 }; 1651 1652 status = wmid3_set_lm_mode(¶ms, &return_value); 1653 1654 if (return_value.error_code || return_value.ec_return_value) 1655 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n", 1656 return_value.error_code, 1657 return_value.ec_return_value); 1658 else 1659 pr_info("Enabled EC raw mode\n"); 1660 1661 return status; 1662} 1663 1664static int acer_wmi_enable_lm(void) 1665{ 1666 struct lm_return_value return_value; 1667 acpi_status status; 1668 struct lm_input_params params = { 1669 .function_num = 0x1, 1670 .commun_devices = 0xFFFF, 1671 .devices = 0xFFFF, 1672 .lm_status = 0x01, /* Launch Manager Active */ 1673 }; 1674 1675 status = wmid3_set_lm_mode(¶ms, &return_value); 1676 1677 if (return_value.error_code || return_value.ec_return_value) 1678 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n", 1679 return_value.error_code, 1680 return_value.ec_return_value); 1681 1682 return status; 1683} 1684 1685static int __init acer_wmi_input_setup(void) 1686{ 1687 acpi_status status; 1688 int err; 1689 1690 acer_wmi_input_dev = input_allocate_device(); 1691 if (!acer_wmi_input_dev) 1692 return -ENOMEM; 1693 1694 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1695 acer_wmi_input_dev->phys = "wmi/input0"; 1696 acer_wmi_input_dev->id.bustype = BUS_HOST; 1697 1698 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1699 if (err) 1700 goto err_free_dev; 1701 1702 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1703 acer_wmi_notify, NULL); 1704 if (ACPI_FAILURE(status)) { 1705 err = -EIO; 1706 goto err_free_keymap; 1707 } 1708 1709 err = input_register_device(acer_wmi_input_dev); 1710 if (err) 1711 goto err_uninstall_notifier; 1712 1713 return 0; 1714 1715err_uninstall_notifier: 1716 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1717err_free_keymap: 1718 sparse_keymap_free(acer_wmi_input_dev); 1719err_free_dev: 1720 input_free_device(acer_wmi_input_dev); 1721 return err; 1722} 1723 1724static void acer_wmi_input_destroy(void) 1725{ 1726 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1727 sparse_keymap_free(acer_wmi_input_dev); 1728 input_unregister_device(acer_wmi_input_dev); 1729} 1730 1731/* 1732 * debugfs functions 1733 */ 1734static u32 get_wmid_devices(void) 1735{ 1736 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1737 union acpi_object *obj; 1738 acpi_status status; 1739 u32 devices = 0; 1740 1741 status = wmi_query_block(WMID_GUID2, 1, &out); 1742 if (ACPI_FAILURE(status)) 1743 return 0; 1744 1745 obj = (union acpi_object *) out.pointer; 1746 if (obj && obj->type == ACPI_TYPE_BUFFER && 1747 (obj->buffer.length == sizeof(u32) || 1748 obj->buffer.length == sizeof(u64))) { 1749 devices = *((u32 *) obj->buffer.pointer); 1750 } else if (obj->type == ACPI_TYPE_INTEGER) { 1751 devices = (u32) obj->integer.value; 1752 } 1753 1754 kfree(out.pointer); 1755 return devices; 1756} 1757 1758/* 1759 * Platform device 1760 */ 1761static int __devinit acer_platform_probe(struct platform_device *device) 1762{ 1763 int err; 1764 1765 if (has_cap(ACER_CAP_MAILLED)) { 1766 err = acer_led_init(&device->dev); 1767 if (err) 1768 goto error_mailled; 1769 } 1770 1771 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1772 err = acer_backlight_init(&device->dev); 1773 if (err) 1774 goto error_brightness; 1775 } 1776 1777 err = acer_rfkill_init(&device->dev); 1778 if (err) 1779 goto error_rfkill; 1780 1781 return err; 1782 1783error_rfkill: 1784 if (has_cap(ACER_CAP_BRIGHTNESS)) 1785 acer_backlight_exit(); 1786error_brightness: 1787 if (has_cap(ACER_CAP_MAILLED)) 1788 acer_led_exit(); 1789error_mailled: 1790 return err; 1791} 1792 1793static int acer_platform_remove(struct platform_device *device) 1794{ 1795 if (has_cap(ACER_CAP_MAILLED)) 1796 acer_led_exit(); 1797 if (has_cap(ACER_CAP_BRIGHTNESS)) 1798 acer_backlight_exit(); 1799 1800 acer_rfkill_exit(); 1801 return 0; 1802} 1803 1804static int acer_platform_suspend(struct platform_device *dev, 1805pm_message_t state) 1806{ 1807 u32 value; 1808 struct acer_data *data = &interface->data; 1809 1810 if (!data) 1811 return -ENOMEM; 1812 1813 if (has_cap(ACER_CAP_MAILLED)) { 1814 get_u32(&value, ACER_CAP_MAILLED); 1815 set_u32(LED_OFF, ACER_CAP_MAILLED); 1816 data->mailled = value; 1817 } 1818 1819 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1820 get_u32(&value, ACER_CAP_BRIGHTNESS); 1821 data->brightness = value; 1822 } 1823 1824 return 0; 1825} 1826 1827static int acer_platform_resume(struct platform_device *device) 1828{ 1829 struct acer_data *data = &interface->data; 1830 1831 if (!data) 1832 return -ENOMEM; 1833 1834 if (has_cap(ACER_CAP_MAILLED)) 1835 set_u32(data->mailled, ACER_CAP_MAILLED); 1836 1837 if (has_cap(ACER_CAP_BRIGHTNESS)) 1838 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 1839 1840 return 0; 1841} 1842 1843static void acer_platform_shutdown(struct platform_device *device) 1844{ 1845 struct acer_data *data = &interface->data; 1846 1847 if (!data) 1848 return; 1849 1850 if (has_cap(ACER_CAP_MAILLED)) 1851 set_u32(LED_OFF, ACER_CAP_MAILLED); 1852} 1853 1854static struct platform_driver acer_platform_driver = { 1855 .driver = { 1856 .name = "acer-wmi", 1857 .owner = THIS_MODULE, 1858 }, 1859 .probe = acer_platform_probe, 1860 .remove = acer_platform_remove, 1861 .suspend = acer_platform_suspend, 1862 .resume = acer_platform_resume, 1863 .shutdown = acer_platform_shutdown, 1864}; 1865 1866static struct platform_device *acer_platform_device; 1867 1868static int remove_sysfs(struct platform_device *device) 1869{ 1870 if (has_cap(ACER_CAP_THREEG)) 1871 device_remove_file(&device->dev, &dev_attr_threeg); 1872 1873 device_remove_file(&device->dev, &dev_attr_interface); 1874 1875 return 0; 1876} 1877 1878static int create_sysfs(void) 1879{ 1880 int retval = -ENOMEM; 1881 1882 if (has_cap(ACER_CAP_THREEG)) { 1883 retval = device_create_file(&acer_platform_device->dev, 1884 &dev_attr_threeg); 1885 if (retval) 1886 goto error_sysfs; 1887 } 1888 1889 retval = device_create_file(&acer_platform_device->dev, 1890 &dev_attr_interface); 1891 if (retval) 1892 goto error_sysfs; 1893 1894 return 0; 1895 1896error_sysfs: 1897 remove_sysfs(acer_platform_device); 1898 return retval; 1899} 1900 1901static void remove_debugfs(void) 1902{ 1903 debugfs_remove(interface->debug.devices); 1904 debugfs_remove(interface->debug.root); 1905} 1906 1907static int create_debugfs(void) 1908{ 1909 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 1910 if (!interface->debug.root) { 1911 pr_err("Failed to create debugfs directory"); 1912 return -ENOMEM; 1913 } 1914 1915 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 1916 interface->debug.root, 1917 &interface->debug.wmid_devices); 1918 if (!interface->debug.devices) 1919 goto error_debugfs; 1920 1921 return 0; 1922 1923error_debugfs: 1924 remove_debugfs(); 1925 return -ENOMEM; 1926} 1927 1928static int __init acer_wmi_init(void) 1929{ 1930 int err; 1931 1932 pr_info("Acer Laptop ACPI-WMI Extras\n"); 1933 1934 if (dmi_check_system(acer_blacklist)) { 1935 pr_info("Blacklisted hardware detected - not loading\n"); 1936 return -ENODEV; 1937 } 1938 1939 find_quirks(); 1940 1941 /* 1942 * Detect which ACPI-WMI interface we're using. 1943 */ 1944 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1945 interface = &AMW0_V2_interface; 1946 1947 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1948 interface = &wmid_interface; 1949 1950 if (wmi_has_guid(WMID_GUID3)) 1951 interface = &wmid_v2_interface; 1952 1953 if (interface) 1954 dmi_walk(type_aa_dmi_decode, NULL); 1955 1956 if (wmi_has_guid(WMID_GUID2) && interface) { 1957 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) { 1958 pr_err("Unable to detect available WMID devices\n"); 1959 return -ENODEV; 1960 } 1961 /* WMID always provides brightness methods */ 1962 interface->capability |= ACER_CAP_BRIGHTNESS; 1963 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) { 1964 pr_err("No WMID device detection method found\n"); 1965 return -ENODEV; 1966 } 1967 1968 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 1969 interface = &AMW0_interface; 1970 1971 if (ACPI_FAILURE(AMW0_set_capabilities())) { 1972 pr_err("Unable to detect available AMW0 devices\n"); 1973 return -ENODEV; 1974 } 1975 } 1976 1977 if (wmi_has_guid(AMW0_GUID1)) 1978 AMW0_find_mailled(); 1979 1980 if (!interface) { 1981 pr_err("No or unsupported WMI interface, unable to load\n"); 1982 return -ENODEV; 1983 } 1984 1985 set_quirks(); 1986 1987 if (acpi_video_backlight_support()) { 1988 interface->capability &= ~ACER_CAP_BRIGHTNESS; 1989 pr_info("Brightness must be controlled by generic video driver\n"); 1990 } 1991 1992 if (wmi_has_guid(WMID_GUID3)) { 1993 if (ec_raw_mode) { 1994 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 1995 pr_err("Cannot enable EC raw mode\n"); 1996 return -ENODEV; 1997 } 1998 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 1999 pr_err("Cannot enable Launch Manager mode\n"); 2000 return -ENODEV; 2001 } 2002 } else if (ec_raw_mode) { 2003 pr_info("No WMID EC raw mode enable method\n"); 2004 } 2005 2006 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 2007 err = acer_wmi_input_setup(); 2008 if (err) 2009 return err; 2010 } 2011 2012 err = platform_driver_register(&acer_platform_driver); 2013 if (err) { 2014 pr_err("Unable to register platform driver\n"); 2015 goto error_platform_register; 2016 } 2017 2018 acer_platform_device = platform_device_alloc("acer-wmi", -1); 2019 if (!acer_platform_device) { 2020 err = -ENOMEM; 2021 goto error_device_alloc; 2022 } 2023 2024 err = platform_device_add(acer_platform_device); 2025 if (err) 2026 goto error_device_add; 2027 2028 err = create_sysfs(); 2029 if (err) 2030 goto error_create_sys; 2031 2032 if (wmi_has_guid(WMID_GUID2)) { 2033 interface->debug.wmid_devices = get_wmid_devices(); 2034 err = create_debugfs(); 2035 if (err) 2036 goto error_create_debugfs; 2037 } 2038 2039 /* Override any initial settings with values from the commandline */ 2040 acer_commandline_init(); 2041 2042 return 0; 2043 2044error_create_debugfs: 2045 remove_sysfs(acer_platform_device); 2046error_create_sys: 2047 platform_device_del(acer_platform_device); 2048error_device_add: 2049 platform_device_put(acer_platform_device); 2050error_device_alloc: 2051 platform_driver_unregister(&acer_platform_driver); 2052error_platform_register: 2053 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2054 acer_wmi_input_destroy(); 2055 2056 return err; 2057} 2058 2059static void __exit acer_wmi_exit(void) 2060{ 2061 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2062 acer_wmi_input_destroy(); 2063 2064 remove_sysfs(acer_platform_device); 2065 remove_debugfs(); 2066 platform_device_unregister(acer_platform_device); 2067 platform_driver_unregister(&acer_platform_driver); 2068 2069 pr_info("Acer Laptop WMI Extras unloaded\n"); 2070 return; 2071} 2072 2073module_init(acer_wmi_init); 2074module_exit(acer_wmi_exit); 2075