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