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