1 /* 2 * Acer WMI Laptop Extras 3 * 4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk> 5 * 6 * Based on acer_acpi: 7 * Copyright (C) 2005-2007 E.M. Smith 8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25 #include <linux/kernel.h> 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/types.h> 29 #include <linux/dmi.h> 30 #include <linux/fb.h> 31 #include <linux/backlight.h> 32 #include <linux/leds.h> 33 #include <linux/platform_device.h> 34 #include <linux/acpi.h> 35 #include <linux/i8042.h> 36 #include <linux/rfkill.h> 37 #include <linux/workqueue.h> 38 #include <linux/debugfs.h> 39 #include <linux/slab.h> 40 #include <linux/input.h> 41 #include <linux/input/sparse-keymap.h> 42 #include <linux/dmi.h> 43 44 #include <acpi/acpi_drivers.h> 45 46 MODULE_AUTHOR("Carlos Corbacho"); 47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); 48 MODULE_LICENSE("GPL"); 49 50 #define ACER_LOGPREFIX "acer-wmi: " 51 #define ACER_ERR KERN_ERR ACER_LOGPREFIX 52 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX 53 #define ACER_INFO KERN_INFO ACER_LOGPREFIX 54 #define ACER_WARNING KERN_WARNING ACER_LOGPREFIX 55 56 /* 57 * Magic Number 58 * Meaning is unknown - this number is required for writing to ACPI for AMW0 59 * (it's also used in acerhk when directly accessing the BIOS) 60 */ 61 #define ACER_AMW0_WRITE 0x9610 62 63 /* 64 * Bit masks for the AMW0 interface 65 */ 66 #define ACER_AMW0_WIRELESS_MASK 0x35 67 #define ACER_AMW0_BLUETOOTH_MASK 0x34 68 #define ACER_AMW0_MAILLED_MASK 0x31 69 70 /* 71 * Method IDs for WMID interface 72 */ 73 #define ACER_WMID_GET_WIRELESS_METHODID 1 74 #define ACER_WMID_GET_BLUETOOTH_METHODID 2 75 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3 76 #define ACER_WMID_SET_WIRELESS_METHODID 4 77 #define ACER_WMID_SET_BLUETOOTH_METHODID 5 78 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6 79 #define ACER_WMID_GET_THREEG_METHODID 10 80 #define ACER_WMID_SET_THREEG_METHODID 11 81 82 /* 83 * Acer ACPI method GUIDs 84 */ 85 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" 86 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" 87 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3" 88 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" 89 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" 90 91 /* 92 * Acer ACPI event GUIDs 93 */ 94 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" 95 96 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); 97 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); 98 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 99 100 enum acer_wmi_event_ids { 101 WMID_HOTKEY_EVENT = 0x1, 102 }; 103 104 static const struct key_entry acer_wmi_keymap[] = { 105 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ 106 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ 107 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ 108 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ 109 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ 110 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ 111 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 112 {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */ 113 {KE_END, 0} 114 }; 115 116 static struct input_dev *acer_wmi_input_dev; 117 118 struct event_return_value { 119 u8 function; 120 u8 key_num; 121 u16 device_state; 122 u32 reserved; 123 } __attribute__((packed)); 124 125 /* 126 * GUID3 Get Device Status device flags 127 */ 128 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 129 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 130 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 131 132 struct lm_input_params { 133 u8 function_num; /* Function Number */ 134 u16 commun_devices; /* Communication type devices default status */ 135 u16 devices; /* Other type devices default status */ 136 u8 lm_status; /* Launch Manager Status */ 137 u16 reserved; 138 } __attribute__((packed)); 139 140 struct lm_return_value { 141 u8 error_code; /* Error Code */ 142 u8 ec_return_value; /* EC Return Value */ 143 u16 reserved; 144 } __attribute__((packed)); 145 146 struct wmid3_gds_input_param { /* Get Device Status input parameter */ 147 u8 function_num; /* Function Number */ 148 u8 hotkey_number; /* Hotkey Number */ 149 u16 devices; /* Get Device */ 150 } __attribute__((packed)); 151 152 struct wmid3_gds_return_value { /* Get Device Status return value*/ 153 u8 error_code; /* Error Code */ 154 u8 ec_return_value; /* EC Return Value */ 155 u16 devices; /* Current Device Status */ 156 u32 reserved; 157 } __attribute__((packed)); 158 159 struct hotkey_function_type_aa { 160 u8 type; 161 u8 length; 162 u16 handle; 163 u16 commun_func_bitmap; 164 } __attribute__((packed)); 165 166 /* 167 * Interface capability flags 168 */ 169 #define ACER_CAP_MAILLED (1<<0) 170 #define ACER_CAP_WIRELESS (1<<1) 171 #define ACER_CAP_BLUETOOTH (1<<2) 172 #define ACER_CAP_BRIGHTNESS (1<<3) 173 #define ACER_CAP_THREEG (1<<4) 174 #define ACER_CAP_ANY (0xFFFFFFFF) 175 176 /* 177 * Interface type flags 178 */ 179 enum interface_flags { 180 ACER_AMW0, 181 ACER_AMW0_V2, 182 ACER_WMID, 183 }; 184 185 #define ACER_DEFAULT_WIRELESS 0 186 #define ACER_DEFAULT_BLUETOOTH 0 187 #define ACER_DEFAULT_MAILLED 0 188 #define ACER_DEFAULT_THREEG 0 189 190 static int max_brightness = 0xF; 191 192 static int mailled = -1; 193 static int brightness = -1; 194 static int threeg = -1; 195 static int force_series; 196 static bool ec_raw_mode; 197 static bool has_type_aa; 198 199 module_param(mailled, int, 0444); 200 module_param(brightness, int, 0444); 201 module_param(threeg, int, 0444); 202 module_param(force_series, int, 0444); 203 module_param(ec_raw_mode, bool, 0444); 204 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 205 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 206 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 207 MODULE_PARM_DESC(force_series, "Force a different laptop series"); 208 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 209 210 struct acer_data { 211 int mailled; 212 int threeg; 213 int brightness; 214 }; 215 216 struct acer_debug { 217 struct dentry *root; 218 struct dentry *devices; 219 u32 wmid_devices; 220 }; 221 222 static struct rfkill *wireless_rfkill; 223 static struct rfkill *bluetooth_rfkill; 224 static struct rfkill *threeg_rfkill; 225 226 /* Each low-level interface must define at least some of the following */ 227 struct wmi_interface { 228 /* The WMI device type */ 229 u32 type; 230 231 /* The capabilities this interface provides */ 232 u32 capability; 233 234 /* Private data for the current interface */ 235 struct acer_data data; 236 237 /* debugfs entries associated with this interface */ 238 struct acer_debug debug; 239 }; 240 241 /* The static interface pointer, points to the currently detected interface */ 242 static struct wmi_interface *interface; 243 244 /* 245 * Embedded Controller quirks 246 * Some laptops require us to directly access the EC to either enable or query 247 * features that are not available through WMI. 248 */ 249 250 struct quirk_entry { 251 u8 wireless; 252 u8 mailled; 253 s8 brightness; 254 u8 bluetooth; 255 }; 256 257 static struct quirk_entry *quirks; 258 259 static void set_quirks(void) 260 { 261 if (!interface) 262 return; 263 264 if (quirks->mailled) 265 interface->capability |= ACER_CAP_MAILLED; 266 267 if (quirks->brightness) 268 interface->capability |= ACER_CAP_BRIGHTNESS; 269 } 270 271 static int dmi_matched(const struct dmi_system_id *dmi) 272 { 273 quirks = dmi->driver_data; 274 return 1; 275 } 276 277 static struct quirk_entry quirk_unknown = { 278 }; 279 280 static struct quirk_entry quirk_acer_aspire_1520 = { 281 .brightness = -1, 282 }; 283 284 static struct quirk_entry quirk_acer_travelmate_2490 = { 285 .mailled = 1, 286 }; 287 288 /* This AMW0 laptop has no bluetooth */ 289 static struct quirk_entry quirk_medion_md_98300 = { 290 .wireless = 1, 291 }; 292 293 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 294 .wireless = 2, 295 }; 296 297 /* The Aspire One has a dummy ACPI-WMI interface - disable it */ 298 static struct dmi_system_id __devinitdata acer_blacklist[] = { 299 { 300 .ident = "Acer Aspire One (SSD)", 301 .matches = { 302 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 303 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 304 }, 305 }, 306 { 307 .ident = "Acer Aspire One (HDD)", 308 .matches = { 309 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 310 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 311 }, 312 }, 313 {} 314 }; 315 316 static struct dmi_system_id acer_quirks[] = { 317 { 318 .callback = dmi_matched, 319 .ident = "Acer Aspire 1360", 320 .matches = { 321 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 322 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 323 }, 324 .driver_data = &quirk_acer_aspire_1520, 325 }, 326 { 327 .callback = dmi_matched, 328 .ident = "Acer Aspire 1520", 329 .matches = { 330 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 331 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 332 }, 333 .driver_data = &quirk_acer_aspire_1520, 334 }, 335 { 336 .callback = dmi_matched, 337 .ident = "Acer Aspire 3100", 338 .matches = { 339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 340 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 341 }, 342 .driver_data = &quirk_acer_travelmate_2490, 343 }, 344 { 345 .callback = dmi_matched, 346 .ident = "Acer Aspire 3610", 347 .matches = { 348 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 349 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 350 }, 351 .driver_data = &quirk_acer_travelmate_2490, 352 }, 353 { 354 .callback = dmi_matched, 355 .ident = "Acer Aspire 5100", 356 .matches = { 357 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 358 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 359 }, 360 .driver_data = &quirk_acer_travelmate_2490, 361 }, 362 { 363 .callback = dmi_matched, 364 .ident = "Acer Aspire 5610", 365 .matches = { 366 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 367 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 368 }, 369 .driver_data = &quirk_acer_travelmate_2490, 370 }, 371 { 372 .callback = dmi_matched, 373 .ident = "Acer Aspire 5630", 374 .matches = { 375 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 376 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 377 }, 378 .driver_data = &quirk_acer_travelmate_2490, 379 }, 380 { 381 .callback = dmi_matched, 382 .ident = "Acer Aspire 5650", 383 .matches = { 384 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 385 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 386 }, 387 .driver_data = &quirk_acer_travelmate_2490, 388 }, 389 { 390 .callback = dmi_matched, 391 .ident = "Acer Aspire 5680", 392 .matches = { 393 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 394 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 395 }, 396 .driver_data = &quirk_acer_travelmate_2490, 397 }, 398 { 399 .callback = dmi_matched, 400 .ident = "Acer Aspire 9110", 401 .matches = { 402 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 403 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 404 }, 405 .driver_data = &quirk_acer_travelmate_2490, 406 }, 407 { 408 .callback = dmi_matched, 409 .ident = "Acer TravelMate 2490", 410 .matches = { 411 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 412 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 413 }, 414 .driver_data = &quirk_acer_travelmate_2490, 415 }, 416 { 417 .callback = dmi_matched, 418 .ident = "Acer TravelMate 4200", 419 .matches = { 420 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 421 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 422 }, 423 .driver_data = &quirk_acer_travelmate_2490, 424 }, 425 { 426 .callback = dmi_matched, 427 .ident = "Fujitsu Siemens Amilo Li 1718", 428 .matches = { 429 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 430 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 431 }, 432 .driver_data = &quirk_fujitsu_amilo_li_1718, 433 }, 434 { 435 .callback = dmi_matched, 436 .ident = "Medion MD 98300", 437 .matches = { 438 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 439 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 440 }, 441 .driver_data = &quirk_medion_md_98300, 442 }, 443 {} 444 }; 445 446 /* Find which quirks are needed for a particular vendor/ model pair */ 447 static void find_quirks(void) 448 { 449 if (!force_series) { 450 dmi_check_system(acer_quirks); 451 } else if (force_series == 2490) { 452 quirks = &quirk_acer_travelmate_2490; 453 } 454 455 if (quirks == NULL) 456 quirks = &quirk_unknown; 457 458 set_quirks(); 459 } 460 461 /* 462 * General interface convenience methods 463 */ 464 465 static bool has_cap(u32 cap) 466 { 467 if ((interface->capability & cap) != 0) 468 return 1; 469 470 return 0; 471 } 472 473 /* 474 * AMW0 (V1) interface 475 */ 476 struct wmab_args { 477 u32 eax; 478 u32 ebx; 479 u32 ecx; 480 u32 edx; 481 }; 482 483 struct wmab_ret { 484 u32 eax; 485 u32 ebx; 486 u32 ecx; 487 u32 edx; 488 u32 eex; 489 }; 490 491 static acpi_status wmab_execute(struct wmab_args *regbuf, 492 struct acpi_buffer *result) 493 { 494 struct acpi_buffer input; 495 acpi_status status; 496 input.length = sizeof(struct wmab_args); 497 input.pointer = (u8 *)regbuf; 498 499 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 500 501 return status; 502 } 503 504 static acpi_status AMW0_get_u32(u32 *value, u32 cap, 505 struct wmi_interface *iface) 506 { 507 int err; 508 u8 result; 509 510 switch (cap) { 511 case ACER_CAP_MAILLED: 512 switch (quirks->mailled) { 513 default: 514 err = ec_read(0xA, &result); 515 if (err) 516 return AE_ERROR; 517 *value = (result >> 7) & 0x1; 518 return AE_OK; 519 } 520 break; 521 case ACER_CAP_WIRELESS: 522 switch (quirks->wireless) { 523 case 1: 524 err = ec_read(0x7B, &result); 525 if (err) 526 return AE_ERROR; 527 *value = result & 0x1; 528 return AE_OK; 529 case 2: 530 err = ec_read(0x71, &result); 531 if (err) 532 return AE_ERROR; 533 *value = result & 0x1; 534 return AE_OK; 535 default: 536 err = ec_read(0xA, &result); 537 if (err) 538 return AE_ERROR; 539 *value = (result >> 2) & 0x1; 540 return AE_OK; 541 } 542 break; 543 case ACER_CAP_BLUETOOTH: 544 switch (quirks->bluetooth) { 545 default: 546 err = ec_read(0xA, &result); 547 if (err) 548 return AE_ERROR; 549 *value = (result >> 4) & 0x1; 550 return AE_OK; 551 } 552 break; 553 case ACER_CAP_BRIGHTNESS: 554 switch (quirks->brightness) { 555 default: 556 err = ec_read(0x83, &result); 557 if (err) 558 return AE_ERROR; 559 *value = result; 560 return AE_OK; 561 } 562 break; 563 default: 564 return AE_ERROR; 565 } 566 return AE_OK; 567 } 568 569 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 570 { 571 struct wmab_args args; 572 573 args.eax = ACER_AMW0_WRITE; 574 args.ebx = value ? (1<<8) : 0; 575 args.ecx = args.edx = 0; 576 577 switch (cap) { 578 case ACER_CAP_MAILLED: 579 if (value > 1) 580 return AE_BAD_PARAMETER; 581 args.ebx |= ACER_AMW0_MAILLED_MASK; 582 break; 583 case ACER_CAP_WIRELESS: 584 if (value > 1) 585 return AE_BAD_PARAMETER; 586 args.ebx |= ACER_AMW0_WIRELESS_MASK; 587 break; 588 case ACER_CAP_BLUETOOTH: 589 if (value > 1) 590 return AE_BAD_PARAMETER; 591 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 592 break; 593 case ACER_CAP_BRIGHTNESS: 594 if (value > max_brightness) 595 return AE_BAD_PARAMETER; 596 switch (quirks->brightness) { 597 default: 598 return ec_write(0x83, value); 599 break; 600 } 601 default: 602 return AE_ERROR; 603 } 604 605 /* Actually do the set */ 606 return wmab_execute(&args, NULL); 607 } 608 609 static acpi_status AMW0_find_mailled(void) 610 { 611 struct wmab_args args; 612 struct wmab_ret ret; 613 acpi_status status = AE_OK; 614 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 615 union acpi_object *obj; 616 617 args.eax = 0x86; 618 args.ebx = args.ecx = args.edx = 0; 619 620 status = wmab_execute(&args, &out); 621 if (ACPI_FAILURE(status)) 622 return status; 623 624 obj = (union acpi_object *) out.pointer; 625 if (obj && obj->type == ACPI_TYPE_BUFFER && 626 obj->buffer.length == sizeof(struct wmab_ret)) { 627 ret = *((struct wmab_ret *) obj->buffer.pointer); 628 } else { 629 kfree(out.pointer); 630 return AE_ERROR; 631 } 632 633 if (ret.eex & 0x1) 634 interface->capability |= ACER_CAP_MAILLED; 635 636 kfree(out.pointer); 637 638 return AE_OK; 639 } 640 641 static acpi_status AMW0_set_capabilities(void) 642 { 643 struct wmab_args args; 644 struct wmab_ret ret; 645 acpi_status status; 646 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 647 union acpi_object *obj; 648 649 /* 650 * On laptops with this strange GUID (non Acer), normal probing doesn't 651 * work. 652 */ 653 if (wmi_has_guid(AMW0_GUID2)) { 654 interface->capability |= ACER_CAP_WIRELESS; 655 return AE_OK; 656 } 657 658 args.eax = ACER_AMW0_WRITE; 659 args.ecx = args.edx = 0; 660 661 args.ebx = 0xa2 << 8; 662 args.ebx |= ACER_AMW0_WIRELESS_MASK; 663 664 status = wmab_execute(&args, &out); 665 if (ACPI_FAILURE(status)) 666 return status; 667 668 obj = out.pointer; 669 if (obj && obj->type == ACPI_TYPE_BUFFER && 670 obj->buffer.length == sizeof(struct wmab_ret)) { 671 ret = *((struct wmab_ret *) obj->buffer.pointer); 672 } else { 673 status = AE_ERROR; 674 goto out; 675 } 676 677 if (ret.eax & 0x1) 678 interface->capability |= ACER_CAP_WIRELESS; 679 680 args.ebx = 2 << 8; 681 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 682 683 /* 684 * It's ok to use existing buffer for next wmab_execute call. 685 * But we need to kfree(out.pointer) if next wmab_execute fail. 686 */ 687 status = wmab_execute(&args, &out); 688 if (ACPI_FAILURE(status)) 689 goto out; 690 691 obj = (union acpi_object *) out.pointer; 692 if (obj && obj->type == ACPI_TYPE_BUFFER 693 && obj->buffer.length == sizeof(struct wmab_ret)) { 694 ret = *((struct wmab_ret *) obj->buffer.pointer); 695 } else { 696 status = AE_ERROR; 697 goto out; 698 } 699 700 if (ret.eax & 0x1) 701 interface->capability |= ACER_CAP_BLUETOOTH; 702 703 /* 704 * This appears to be safe to enable, since all Wistron based laptops 705 * appear to use the same EC register for brightness, even if they 706 * differ for wireless, etc 707 */ 708 if (quirks->brightness >= 0) 709 interface->capability |= ACER_CAP_BRIGHTNESS; 710 711 status = AE_OK; 712 out: 713 kfree(out.pointer); 714 return status; 715 } 716 717 static struct wmi_interface AMW0_interface = { 718 .type = ACER_AMW0, 719 }; 720 721 static struct wmi_interface AMW0_V2_interface = { 722 .type = ACER_AMW0_V2, 723 }; 724 725 /* 726 * New interface (The WMID interface) 727 */ 728 static acpi_status 729 WMI_execute_u32(u32 method_id, u32 in, u32 *out) 730 { 731 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 732 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 733 union acpi_object *obj; 734 u32 tmp; 735 acpi_status status; 736 737 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 738 739 if (ACPI_FAILURE(status)) 740 return status; 741 742 obj = (union acpi_object *) result.pointer; 743 if (obj && obj->type == ACPI_TYPE_BUFFER && 744 obj->buffer.length == sizeof(u32)) { 745 tmp = *((u32 *) obj->buffer.pointer); 746 } else { 747 tmp = 0; 748 } 749 750 if (out) 751 *out = tmp; 752 753 kfree(result.pointer); 754 755 return status; 756 } 757 758 static acpi_status WMID_get_u32(u32 *value, u32 cap, 759 struct wmi_interface *iface) 760 { 761 acpi_status status; 762 u8 tmp; 763 u32 result, method_id = 0; 764 765 switch (cap) { 766 case ACER_CAP_WIRELESS: 767 method_id = ACER_WMID_GET_WIRELESS_METHODID; 768 break; 769 case ACER_CAP_BLUETOOTH: 770 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 771 break; 772 case ACER_CAP_BRIGHTNESS: 773 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 774 break; 775 case ACER_CAP_THREEG: 776 method_id = ACER_WMID_GET_THREEG_METHODID; 777 break; 778 case ACER_CAP_MAILLED: 779 if (quirks->mailled == 1) { 780 ec_read(0x9f, &tmp); 781 *value = tmp & 0x1; 782 return 0; 783 } 784 default: 785 return AE_ERROR; 786 } 787 status = WMI_execute_u32(method_id, 0, &result); 788 789 if (ACPI_SUCCESS(status)) 790 *value = (u8)result; 791 792 return status; 793 } 794 795 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 796 { 797 u32 method_id = 0; 798 char param; 799 800 switch (cap) { 801 case ACER_CAP_BRIGHTNESS: 802 if (value > max_brightness) 803 return AE_BAD_PARAMETER; 804 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 805 break; 806 case ACER_CAP_WIRELESS: 807 if (value > 1) 808 return AE_BAD_PARAMETER; 809 method_id = ACER_WMID_SET_WIRELESS_METHODID; 810 break; 811 case ACER_CAP_BLUETOOTH: 812 if (value > 1) 813 return AE_BAD_PARAMETER; 814 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 815 break; 816 case ACER_CAP_THREEG: 817 if (value > 1) 818 return AE_BAD_PARAMETER; 819 method_id = ACER_WMID_SET_THREEG_METHODID; 820 break; 821 case ACER_CAP_MAILLED: 822 if (value > 1) 823 return AE_BAD_PARAMETER; 824 if (quirks->mailled == 1) { 825 param = value ? 0x92 : 0x93; 826 i8042_lock_chip(); 827 i8042_command(¶m, 0x1059); 828 i8042_unlock_chip(); 829 return 0; 830 } 831 break; 832 default: 833 return AE_ERROR; 834 } 835 return WMI_execute_u32(method_id, (u32)value, NULL); 836 } 837 838 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 839 { 840 struct hotkey_function_type_aa *type_aa; 841 842 /* We are looking for OEM-specific Type AAh */ 843 if (header->type != 0xAA) 844 return; 845 846 has_type_aa = true; 847 type_aa = (struct hotkey_function_type_aa *) header; 848 849 printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n", 850 type_aa->commun_func_bitmap); 851 852 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 853 interface->capability |= ACER_CAP_WIRELESS; 854 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 855 interface->capability |= ACER_CAP_THREEG; 856 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 857 interface->capability |= ACER_CAP_BLUETOOTH; 858 } 859 860 static acpi_status WMID_set_capabilities(void) 861 { 862 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 863 union acpi_object *obj; 864 acpi_status status; 865 u32 devices; 866 867 status = wmi_query_block(WMID_GUID2, 1, &out); 868 if (ACPI_FAILURE(status)) 869 return status; 870 871 obj = (union acpi_object *) out.pointer; 872 if (obj && obj->type == ACPI_TYPE_BUFFER && 873 obj->buffer.length == sizeof(u32)) { 874 devices = *((u32 *) obj->buffer.pointer); 875 } else { 876 kfree(out.pointer); 877 return AE_ERROR; 878 } 879 880 dmi_walk(type_aa_dmi_decode, NULL); 881 if (!has_type_aa) { 882 interface->capability |= ACER_CAP_WIRELESS; 883 interface->capability |= ACER_CAP_THREEG; 884 if (devices & 0x10) 885 interface->capability |= ACER_CAP_BLUETOOTH; 886 } 887 888 /* WMID always provides brightness methods */ 889 interface->capability |= ACER_CAP_BRIGHTNESS; 890 891 if (!(devices & 0x20)) 892 max_brightness = 0x9; 893 894 kfree(out.pointer); 895 return status; 896 } 897 898 static struct wmi_interface wmid_interface = { 899 .type = ACER_WMID, 900 }; 901 902 /* 903 * Generic Device (interface-independent) 904 */ 905 906 static acpi_status get_u32(u32 *value, u32 cap) 907 { 908 acpi_status status = AE_ERROR; 909 910 switch (interface->type) { 911 case ACER_AMW0: 912 status = AMW0_get_u32(value, cap, interface); 913 break; 914 case ACER_AMW0_V2: 915 if (cap == ACER_CAP_MAILLED) { 916 status = AMW0_get_u32(value, cap, interface); 917 break; 918 } 919 case ACER_WMID: 920 status = WMID_get_u32(value, cap, interface); 921 break; 922 } 923 924 return status; 925 } 926 927 static acpi_status set_u32(u32 value, u32 cap) 928 { 929 acpi_status status; 930 931 if (interface->capability & cap) { 932 switch (interface->type) { 933 case ACER_AMW0: 934 return AMW0_set_u32(value, cap, interface); 935 case ACER_AMW0_V2: 936 if (cap == ACER_CAP_MAILLED) 937 return AMW0_set_u32(value, cap, interface); 938 939 /* 940 * On some models, some WMID methods don't toggle 941 * properly. For those cases, we want to run the AMW0 942 * method afterwards to be certain we've really toggled 943 * the device state. 944 */ 945 if (cap == ACER_CAP_WIRELESS || 946 cap == ACER_CAP_BLUETOOTH) { 947 status = WMID_set_u32(value, cap, interface); 948 if (ACPI_FAILURE(status)) 949 return status; 950 951 return AMW0_set_u32(value, cap, interface); 952 } 953 case ACER_WMID: 954 return WMID_set_u32(value, cap, interface); 955 default: 956 return AE_BAD_PARAMETER; 957 } 958 } 959 return AE_BAD_PARAMETER; 960 } 961 962 static void __init acer_commandline_init(void) 963 { 964 /* 965 * These will all fail silently if the value given is invalid, or the 966 * capability isn't available on the given interface 967 */ 968 set_u32(mailled, ACER_CAP_MAILLED); 969 if (!has_type_aa) 970 set_u32(threeg, ACER_CAP_THREEG); 971 set_u32(brightness, ACER_CAP_BRIGHTNESS); 972 } 973 974 /* 975 * LED device (Mail LED only, no other LEDs known yet) 976 */ 977 static void mail_led_set(struct led_classdev *led_cdev, 978 enum led_brightness value) 979 { 980 set_u32(value, ACER_CAP_MAILLED); 981 } 982 983 static struct led_classdev mail_led = { 984 .name = "acer-wmi::mail", 985 .brightness_set = mail_led_set, 986 }; 987 988 static int __devinit acer_led_init(struct device *dev) 989 { 990 return led_classdev_register(dev, &mail_led); 991 } 992 993 static void acer_led_exit(void) 994 { 995 led_classdev_unregister(&mail_led); 996 } 997 998 /* 999 * Backlight device 1000 */ 1001 static struct backlight_device *acer_backlight_device; 1002 1003 static int read_brightness(struct backlight_device *bd) 1004 { 1005 u32 value; 1006 get_u32(&value, ACER_CAP_BRIGHTNESS); 1007 return value; 1008 } 1009 1010 static int update_bl_status(struct backlight_device *bd) 1011 { 1012 int intensity = bd->props.brightness; 1013 1014 if (bd->props.power != FB_BLANK_UNBLANK) 1015 intensity = 0; 1016 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1017 intensity = 0; 1018 1019 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1020 1021 return 0; 1022 } 1023 1024 static const struct backlight_ops acer_bl_ops = { 1025 .get_brightness = read_brightness, 1026 .update_status = update_bl_status, 1027 }; 1028 1029 static int __devinit acer_backlight_init(struct device *dev) 1030 { 1031 struct backlight_properties props; 1032 struct backlight_device *bd; 1033 1034 memset(&props, 0, sizeof(struct backlight_properties)); 1035 props.max_brightness = max_brightness; 1036 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1037 &props); 1038 if (IS_ERR(bd)) { 1039 printk(ACER_ERR "Could not register Acer backlight device\n"); 1040 acer_backlight_device = NULL; 1041 return PTR_ERR(bd); 1042 } 1043 1044 acer_backlight_device = bd; 1045 1046 bd->props.power = FB_BLANK_UNBLANK; 1047 bd->props.brightness = read_brightness(bd); 1048 backlight_update_status(bd); 1049 return 0; 1050 } 1051 1052 static void acer_backlight_exit(void) 1053 { 1054 backlight_device_unregister(acer_backlight_device); 1055 } 1056 1057 static acpi_status wmid3_get_device_status(u32 *value, u16 device) 1058 { 1059 struct wmid3_gds_return_value return_value; 1060 acpi_status status; 1061 union acpi_object *obj; 1062 struct wmid3_gds_input_param params = { 1063 .function_num = 0x1, 1064 .hotkey_number = 0x01, 1065 .devices = device, 1066 }; 1067 struct acpi_buffer input = { 1068 sizeof(struct wmid3_gds_input_param), 1069 ¶ms 1070 }; 1071 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1072 1073 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 1074 if (ACPI_FAILURE(status)) 1075 return status; 1076 1077 obj = output.pointer; 1078 1079 if (!obj) 1080 return AE_ERROR; 1081 else if (obj->type != ACPI_TYPE_BUFFER) { 1082 kfree(obj); 1083 return AE_ERROR; 1084 } 1085 if (obj->buffer.length != 8) { 1086 printk(ACER_WARNING "Unknown buffer length %d\n", 1087 obj->buffer.length); 1088 kfree(obj); 1089 return AE_ERROR; 1090 } 1091 1092 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1093 kfree(obj); 1094 1095 if (return_value.error_code || return_value.ec_return_value) 1096 printk(ACER_WARNING "Get Device Status failed: " 1097 "0x%x - 0x%x\n", return_value.error_code, 1098 return_value.ec_return_value); 1099 else 1100 *value = !!(return_value.devices & device); 1101 1102 return status; 1103 } 1104 1105 static acpi_status get_device_status(u32 *value, u32 cap) 1106 { 1107 if (wmi_has_guid(WMID_GUID3)) { 1108 u16 device; 1109 1110 switch (cap) { 1111 case ACER_CAP_WIRELESS: 1112 device = ACER_WMID3_GDS_WIRELESS; 1113 break; 1114 case ACER_CAP_BLUETOOTH: 1115 device = ACER_WMID3_GDS_BLUETOOTH; 1116 break; 1117 case ACER_CAP_THREEG: 1118 device = ACER_WMID3_GDS_THREEG; 1119 break; 1120 default: 1121 return AE_ERROR; 1122 } 1123 return wmid3_get_device_status(value, device); 1124 1125 } else { 1126 return get_u32(value, cap); 1127 } 1128 } 1129 1130 /* 1131 * Rfkill devices 1132 */ 1133 static void acer_rfkill_update(struct work_struct *ignored); 1134 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1135 static void acer_rfkill_update(struct work_struct *ignored) 1136 { 1137 u32 state; 1138 acpi_status status; 1139 1140 status = get_u32(&state, ACER_CAP_WIRELESS); 1141 if (ACPI_SUCCESS(status)) 1142 rfkill_set_sw_state(wireless_rfkill, !state); 1143 1144 if (has_cap(ACER_CAP_BLUETOOTH)) { 1145 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1146 if (ACPI_SUCCESS(status)) 1147 rfkill_set_sw_state(bluetooth_rfkill, !state); 1148 } 1149 1150 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1151 status = wmid3_get_device_status(&state, 1152 ACER_WMID3_GDS_THREEG); 1153 if (ACPI_SUCCESS(status)) 1154 rfkill_set_sw_state(threeg_rfkill, !state); 1155 } 1156 1157 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1158 } 1159 1160 static int acer_rfkill_set(void *data, bool blocked) 1161 { 1162 acpi_status status; 1163 u32 cap = (unsigned long)data; 1164 status = set_u32(!blocked, cap); 1165 if (ACPI_FAILURE(status)) 1166 return -ENODEV; 1167 return 0; 1168 } 1169 1170 static const struct rfkill_ops acer_rfkill_ops = { 1171 .set_block = acer_rfkill_set, 1172 }; 1173 1174 static struct rfkill *acer_rfkill_register(struct device *dev, 1175 enum rfkill_type type, 1176 char *name, u32 cap) 1177 { 1178 int err; 1179 struct rfkill *rfkill_dev; 1180 u32 state; 1181 acpi_status status; 1182 1183 rfkill_dev = rfkill_alloc(name, dev, type, 1184 &acer_rfkill_ops, 1185 (void *)(unsigned long)cap); 1186 if (!rfkill_dev) 1187 return ERR_PTR(-ENOMEM); 1188 1189 status = get_device_status(&state, cap); 1190 if (ACPI_SUCCESS(status)) 1191 rfkill_init_sw_state(rfkill_dev, !state); 1192 1193 err = rfkill_register(rfkill_dev); 1194 if (err) { 1195 rfkill_destroy(rfkill_dev); 1196 return ERR_PTR(err); 1197 } 1198 return rfkill_dev; 1199 } 1200 1201 static int acer_rfkill_init(struct device *dev) 1202 { 1203 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1204 "acer-wireless", ACER_CAP_WIRELESS); 1205 if (IS_ERR(wireless_rfkill)) 1206 return PTR_ERR(wireless_rfkill); 1207 1208 if (has_cap(ACER_CAP_BLUETOOTH)) { 1209 bluetooth_rfkill = acer_rfkill_register(dev, 1210 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1211 ACER_CAP_BLUETOOTH); 1212 if (IS_ERR(bluetooth_rfkill)) { 1213 rfkill_unregister(wireless_rfkill); 1214 rfkill_destroy(wireless_rfkill); 1215 return PTR_ERR(bluetooth_rfkill); 1216 } 1217 } 1218 1219 if (has_cap(ACER_CAP_THREEG)) { 1220 threeg_rfkill = acer_rfkill_register(dev, 1221 RFKILL_TYPE_WWAN, "acer-threeg", 1222 ACER_CAP_THREEG); 1223 if (IS_ERR(threeg_rfkill)) { 1224 rfkill_unregister(wireless_rfkill); 1225 rfkill_destroy(wireless_rfkill); 1226 rfkill_unregister(bluetooth_rfkill); 1227 rfkill_destroy(bluetooth_rfkill); 1228 return PTR_ERR(threeg_rfkill); 1229 } 1230 } 1231 1232 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1233 1234 return 0; 1235 } 1236 1237 static void acer_rfkill_exit(void) 1238 { 1239 cancel_delayed_work_sync(&acer_rfkill_work); 1240 1241 rfkill_unregister(wireless_rfkill); 1242 rfkill_destroy(wireless_rfkill); 1243 1244 if (has_cap(ACER_CAP_BLUETOOTH)) { 1245 rfkill_unregister(bluetooth_rfkill); 1246 rfkill_destroy(bluetooth_rfkill); 1247 } 1248 1249 if (has_cap(ACER_CAP_THREEG)) { 1250 rfkill_unregister(threeg_rfkill); 1251 rfkill_destroy(threeg_rfkill); 1252 } 1253 return; 1254 } 1255 1256 /* 1257 * sysfs interface 1258 */ 1259 static ssize_t show_bool_threeg(struct device *dev, 1260 struct device_attribute *attr, char *buf) 1261 { 1262 u32 result; \ 1263 acpi_status status; 1264 if (wmi_has_guid(WMID_GUID3)) 1265 status = wmid3_get_device_status(&result, 1266 ACER_WMID3_GDS_THREEG); 1267 else 1268 status = get_u32(&result, ACER_CAP_THREEG); 1269 if (ACPI_SUCCESS(status)) 1270 return sprintf(buf, "%u\n", result); 1271 return sprintf(buf, "Read error\n"); 1272 } 1273 1274 static ssize_t set_bool_threeg(struct device *dev, 1275 struct device_attribute *attr, const char *buf, size_t count) 1276 { 1277 u32 tmp = simple_strtoul(buf, NULL, 10); 1278 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1279 if (ACPI_FAILURE(status)) 1280 return -EINVAL; 1281 return count; 1282 } 1283 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg, 1284 set_bool_threeg); 1285 1286 static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1287 char *buf) 1288 { 1289 switch (interface->type) { 1290 case ACER_AMW0: 1291 return sprintf(buf, "AMW0\n"); 1292 case ACER_AMW0_V2: 1293 return sprintf(buf, "AMW0 v2\n"); 1294 case ACER_WMID: 1295 return sprintf(buf, "WMID\n"); 1296 default: 1297 return sprintf(buf, "Error!\n"); 1298 } 1299 } 1300 1301 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1302 1303 static void acer_wmi_notify(u32 value, void *context) 1304 { 1305 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1306 union acpi_object *obj; 1307 struct event_return_value return_value; 1308 acpi_status status; 1309 1310 status = wmi_get_event_data(value, &response); 1311 if (status != AE_OK) { 1312 printk(ACER_WARNING "bad event status 0x%x\n", status); 1313 return; 1314 } 1315 1316 obj = (union acpi_object *)response.pointer; 1317 1318 if (!obj) 1319 return; 1320 if (obj->type != ACPI_TYPE_BUFFER) { 1321 printk(ACER_WARNING "Unknown response received %d\n", 1322 obj->type); 1323 kfree(obj); 1324 return; 1325 } 1326 if (obj->buffer.length != 8) { 1327 printk(ACER_WARNING "Unknown buffer length %d\n", 1328 obj->buffer.length); 1329 kfree(obj); 1330 return; 1331 } 1332 1333 return_value = *((struct event_return_value *)obj->buffer.pointer); 1334 kfree(obj); 1335 1336 switch (return_value.function) { 1337 case WMID_HOTKEY_EVENT: 1338 if (!sparse_keymap_report_event(acer_wmi_input_dev, 1339 return_value.key_num, 1, true)) 1340 printk(ACER_WARNING "Unknown key number - 0x%x\n", 1341 return_value.key_num); 1342 break; 1343 default: 1344 printk(ACER_WARNING "Unknown function number - %d - %d\n", 1345 return_value.function, return_value.key_num); 1346 break; 1347 } 1348 } 1349 1350 static acpi_status 1351 wmid3_set_lm_mode(struct lm_input_params *params, 1352 struct lm_return_value *return_value) 1353 { 1354 acpi_status status; 1355 union acpi_object *obj; 1356 1357 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1358 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1359 1360 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1361 if (ACPI_FAILURE(status)) 1362 return status; 1363 1364 obj = output.pointer; 1365 1366 if (!obj) 1367 return AE_ERROR; 1368 else if (obj->type != ACPI_TYPE_BUFFER) { 1369 kfree(obj); 1370 return AE_ERROR; 1371 } 1372 if (obj->buffer.length != 4) { 1373 printk(ACER_WARNING "Unknown buffer length %d\n", 1374 obj->buffer.length); 1375 kfree(obj); 1376 return AE_ERROR; 1377 } 1378 1379 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1380 kfree(obj); 1381 1382 return status; 1383 } 1384 1385 static int acer_wmi_enable_ec_raw(void) 1386 { 1387 struct lm_return_value return_value; 1388 acpi_status status; 1389 struct lm_input_params params = { 1390 .function_num = 0x1, 1391 .commun_devices = 0xFFFF, 1392 .devices = 0xFFFF, 1393 .lm_status = 0x00, /* Launch Manager Deactive */ 1394 }; 1395 1396 status = wmid3_set_lm_mode(¶ms, &return_value); 1397 1398 if (return_value.error_code || return_value.ec_return_value) 1399 printk(ACER_WARNING "Enabling EC raw mode failed: " 1400 "0x%x - 0x%x\n", return_value.error_code, 1401 return_value.ec_return_value); 1402 else 1403 printk(ACER_INFO "Enabled EC raw mode"); 1404 1405 return status; 1406 } 1407 1408 static int acer_wmi_enable_lm(void) 1409 { 1410 struct lm_return_value return_value; 1411 acpi_status status; 1412 struct lm_input_params params = { 1413 .function_num = 0x1, 1414 .commun_devices = 0xFFFF, 1415 .devices = 0xFFFF, 1416 .lm_status = 0x01, /* Launch Manager Active */ 1417 }; 1418 1419 status = wmid3_set_lm_mode(¶ms, &return_value); 1420 1421 if (return_value.error_code || return_value.ec_return_value) 1422 printk(ACER_WARNING "Enabling Launch Manager failed: " 1423 "0x%x - 0x%x\n", return_value.error_code, 1424 return_value.ec_return_value); 1425 1426 return status; 1427 } 1428 1429 static int __init acer_wmi_input_setup(void) 1430 { 1431 acpi_status status; 1432 int err; 1433 1434 acer_wmi_input_dev = input_allocate_device(); 1435 if (!acer_wmi_input_dev) 1436 return -ENOMEM; 1437 1438 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1439 acer_wmi_input_dev->phys = "wmi/input0"; 1440 acer_wmi_input_dev->id.bustype = BUS_HOST; 1441 1442 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1443 if (err) 1444 goto err_free_dev; 1445 1446 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1447 acer_wmi_notify, NULL); 1448 if (ACPI_FAILURE(status)) { 1449 err = -EIO; 1450 goto err_free_keymap; 1451 } 1452 1453 err = input_register_device(acer_wmi_input_dev); 1454 if (err) 1455 goto err_uninstall_notifier; 1456 1457 return 0; 1458 1459 err_uninstall_notifier: 1460 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1461 err_free_keymap: 1462 sparse_keymap_free(acer_wmi_input_dev); 1463 err_free_dev: 1464 input_free_device(acer_wmi_input_dev); 1465 return err; 1466 } 1467 1468 static void acer_wmi_input_destroy(void) 1469 { 1470 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1471 sparse_keymap_free(acer_wmi_input_dev); 1472 input_unregister_device(acer_wmi_input_dev); 1473 } 1474 1475 /* 1476 * debugfs functions 1477 */ 1478 static u32 get_wmid_devices(void) 1479 { 1480 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1481 union acpi_object *obj; 1482 acpi_status status; 1483 u32 devices = 0; 1484 1485 status = wmi_query_block(WMID_GUID2, 1, &out); 1486 if (ACPI_FAILURE(status)) 1487 return 0; 1488 1489 obj = (union acpi_object *) out.pointer; 1490 if (obj && obj->type == ACPI_TYPE_BUFFER && 1491 obj->buffer.length == sizeof(u32)) { 1492 devices = *((u32 *) obj->buffer.pointer); 1493 } 1494 1495 kfree(out.pointer); 1496 return devices; 1497 } 1498 1499 /* 1500 * Platform device 1501 */ 1502 static int __devinit acer_platform_probe(struct platform_device *device) 1503 { 1504 int err; 1505 1506 if (has_cap(ACER_CAP_MAILLED)) { 1507 err = acer_led_init(&device->dev); 1508 if (err) 1509 goto error_mailled; 1510 } 1511 1512 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1513 err = acer_backlight_init(&device->dev); 1514 if (err) 1515 goto error_brightness; 1516 } 1517 1518 err = acer_rfkill_init(&device->dev); 1519 if (err) 1520 goto error_rfkill; 1521 1522 return err; 1523 1524 error_rfkill: 1525 if (has_cap(ACER_CAP_BRIGHTNESS)) 1526 acer_backlight_exit(); 1527 error_brightness: 1528 if (has_cap(ACER_CAP_MAILLED)) 1529 acer_led_exit(); 1530 error_mailled: 1531 return err; 1532 } 1533 1534 static int acer_platform_remove(struct platform_device *device) 1535 { 1536 if (has_cap(ACER_CAP_MAILLED)) 1537 acer_led_exit(); 1538 if (has_cap(ACER_CAP_BRIGHTNESS)) 1539 acer_backlight_exit(); 1540 1541 acer_rfkill_exit(); 1542 return 0; 1543 } 1544 1545 static int acer_platform_suspend(struct platform_device *dev, 1546 pm_message_t state) 1547 { 1548 u32 value; 1549 struct acer_data *data = &interface->data; 1550 1551 if (!data) 1552 return -ENOMEM; 1553 1554 if (has_cap(ACER_CAP_MAILLED)) { 1555 get_u32(&value, ACER_CAP_MAILLED); 1556 data->mailled = value; 1557 } 1558 1559 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1560 get_u32(&value, ACER_CAP_BRIGHTNESS); 1561 data->brightness = value; 1562 } 1563 1564 return 0; 1565 } 1566 1567 static int acer_platform_resume(struct platform_device *device) 1568 { 1569 struct acer_data *data = &interface->data; 1570 1571 if (!data) 1572 return -ENOMEM; 1573 1574 if (has_cap(ACER_CAP_MAILLED)) 1575 set_u32(data->mailled, ACER_CAP_MAILLED); 1576 1577 if (has_cap(ACER_CAP_BRIGHTNESS)) 1578 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 1579 1580 return 0; 1581 } 1582 1583 static struct platform_driver acer_platform_driver = { 1584 .driver = { 1585 .name = "acer-wmi", 1586 .owner = THIS_MODULE, 1587 }, 1588 .probe = acer_platform_probe, 1589 .remove = acer_platform_remove, 1590 .suspend = acer_platform_suspend, 1591 .resume = acer_platform_resume, 1592 }; 1593 1594 static struct platform_device *acer_platform_device; 1595 1596 static int remove_sysfs(struct platform_device *device) 1597 { 1598 if (has_cap(ACER_CAP_THREEG)) 1599 device_remove_file(&device->dev, &dev_attr_threeg); 1600 1601 device_remove_file(&device->dev, &dev_attr_interface); 1602 1603 return 0; 1604 } 1605 1606 static int create_sysfs(void) 1607 { 1608 int retval = -ENOMEM; 1609 1610 if (has_cap(ACER_CAP_THREEG)) { 1611 retval = device_create_file(&acer_platform_device->dev, 1612 &dev_attr_threeg); 1613 if (retval) 1614 goto error_sysfs; 1615 } 1616 1617 retval = device_create_file(&acer_platform_device->dev, 1618 &dev_attr_interface); 1619 if (retval) 1620 goto error_sysfs; 1621 1622 return 0; 1623 1624 error_sysfs: 1625 remove_sysfs(acer_platform_device); 1626 return retval; 1627 } 1628 1629 static void remove_debugfs(void) 1630 { 1631 debugfs_remove(interface->debug.devices); 1632 debugfs_remove(interface->debug.root); 1633 } 1634 1635 static int create_debugfs(void) 1636 { 1637 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 1638 if (!interface->debug.root) { 1639 printk(ACER_ERR "Failed to create debugfs directory"); 1640 return -ENOMEM; 1641 } 1642 1643 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 1644 interface->debug.root, 1645 &interface->debug.wmid_devices); 1646 if (!interface->debug.devices) 1647 goto error_debugfs; 1648 1649 return 0; 1650 1651 error_debugfs: 1652 remove_debugfs(); 1653 return -ENOMEM; 1654 } 1655 1656 static int __init acer_wmi_init(void) 1657 { 1658 int err; 1659 1660 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n"); 1661 1662 if (dmi_check_system(acer_blacklist)) { 1663 printk(ACER_INFO "Blacklisted hardware detected - " 1664 "not loading\n"); 1665 return -ENODEV; 1666 } 1667 1668 find_quirks(); 1669 1670 /* 1671 * Detect which ACPI-WMI interface we're using. 1672 */ 1673 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1674 interface = &AMW0_V2_interface; 1675 1676 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 1677 interface = &wmid_interface; 1678 1679 if (wmi_has_guid(WMID_GUID2) && interface) { 1680 if (ACPI_FAILURE(WMID_set_capabilities())) { 1681 printk(ACER_ERR "Unable to detect available WMID " 1682 "devices\n"); 1683 return -ENODEV; 1684 } 1685 } else if (!wmi_has_guid(WMID_GUID2) && interface) { 1686 printk(ACER_ERR "No WMID device detection method found\n"); 1687 return -ENODEV; 1688 } 1689 1690 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 1691 interface = &AMW0_interface; 1692 1693 if (ACPI_FAILURE(AMW0_set_capabilities())) { 1694 printk(ACER_ERR "Unable to detect available AMW0 " 1695 "devices\n"); 1696 return -ENODEV; 1697 } 1698 } 1699 1700 if (wmi_has_guid(AMW0_GUID1)) 1701 AMW0_find_mailled(); 1702 1703 if (!interface) { 1704 printk(ACER_INFO "No or unsupported WMI interface, unable to " 1705 "load\n"); 1706 return -ENODEV; 1707 } 1708 1709 set_quirks(); 1710 1711 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) { 1712 interface->capability &= ~ACER_CAP_BRIGHTNESS; 1713 printk(ACER_INFO "Brightness must be controlled by " 1714 "generic video driver\n"); 1715 } 1716 1717 if (wmi_has_guid(WMID_GUID3)) { 1718 if (ec_raw_mode) { 1719 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 1720 printk(ACER_ERR "Cannot enable EC raw mode\n"); 1721 return -ENODEV; 1722 } 1723 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 1724 printk(ACER_ERR "Cannot enable Launch Manager mode\n"); 1725 return -ENODEV; 1726 } 1727 } else if (ec_raw_mode) { 1728 printk(ACER_INFO "No WMID EC raw mode enable method\n"); 1729 } 1730 1731 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 1732 err = acer_wmi_input_setup(); 1733 if (err) 1734 return err; 1735 } 1736 1737 err = platform_driver_register(&acer_platform_driver); 1738 if (err) { 1739 printk(ACER_ERR "Unable to register platform driver.\n"); 1740 goto error_platform_register; 1741 } 1742 1743 acer_platform_device = platform_device_alloc("acer-wmi", -1); 1744 if (!acer_platform_device) { 1745 err = -ENOMEM; 1746 goto error_device_alloc; 1747 } 1748 1749 err = platform_device_add(acer_platform_device); 1750 if (err) 1751 goto error_device_add; 1752 1753 err = create_sysfs(); 1754 if (err) 1755 goto error_create_sys; 1756 1757 if (wmi_has_guid(WMID_GUID2)) { 1758 interface->debug.wmid_devices = get_wmid_devices(); 1759 err = create_debugfs(); 1760 if (err) 1761 goto error_create_debugfs; 1762 } 1763 1764 /* Override any initial settings with values from the commandline */ 1765 acer_commandline_init(); 1766 1767 return 0; 1768 1769 error_create_debugfs: 1770 remove_sysfs(acer_platform_device); 1771 error_create_sys: 1772 platform_device_del(acer_platform_device); 1773 error_device_add: 1774 platform_device_put(acer_platform_device); 1775 error_device_alloc: 1776 platform_driver_unregister(&acer_platform_driver); 1777 error_platform_register: 1778 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 1779 acer_wmi_input_destroy(); 1780 1781 return err; 1782 } 1783 1784 static void __exit acer_wmi_exit(void) 1785 { 1786 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 1787 acer_wmi_input_destroy(); 1788 1789 remove_sysfs(acer_platform_device); 1790 remove_debugfs(); 1791 platform_device_unregister(acer_platform_device); 1792 platform_driver_unregister(&acer_platform_driver); 1793 1794 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n"); 1795 return; 1796 } 1797 1798 module_init(acer_wmi_init); 1799 module_exit(acer_wmi_exit); 1800