1 /* 2 * Acer WMI Laptop Extras 3 * 4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk> 5 * 6 * Based on acer_acpi: 7 * Copyright (C) 2005-2007 E.M. Smith 8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 26 27 #include <linux/kernel.h> 28 #include <linux/module.h> 29 #include <linux/init.h> 30 #include <linux/types.h> 31 #include <linux/dmi.h> 32 #include <linux/fb.h> 33 #include <linux/backlight.h> 34 #include <linux/leds.h> 35 #include <linux/platform_device.h> 36 #include <linux/acpi.h> 37 #include <linux/i8042.h> 38 #include <linux/rfkill.h> 39 #include <linux/workqueue.h> 40 #include <linux/debugfs.h> 41 #include <linux/slab.h> 42 #include <linux/input.h> 43 #include <linux/input/sparse-keymap.h> 44 45 #include <acpi/acpi_drivers.h> 46 #include <acpi/video.h> 47 48 MODULE_AUTHOR("Carlos Corbacho"); 49 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); 50 MODULE_LICENSE("GPL"); 51 52 /* 53 * Magic Number 54 * Meaning is unknown - this number is required for writing to ACPI for AMW0 55 * (it's also used in acerhk when directly accessing the BIOS) 56 */ 57 #define ACER_AMW0_WRITE 0x9610 58 59 /* 60 * Bit masks for the AMW0 interface 61 */ 62 #define ACER_AMW0_WIRELESS_MASK 0x35 63 #define ACER_AMW0_BLUETOOTH_MASK 0x34 64 #define ACER_AMW0_MAILLED_MASK 0x31 65 66 /* 67 * Method IDs for WMID interface 68 */ 69 #define ACER_WMID_GET_WIRELESS_METHODID 1 70 #define ACER_WMID_GET_BLUETOOTH_METHODID 2 71 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3 72 #define ACER_WMID_SET_WIRELESS_METHODID 4 73 #define ACER_WMID_SET_BLUETOOTH_METHODID 5 74 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6 75 #define ACER_WMID_GET_THREEG_METHODID 10 76 #define ACER_WMID_SET_THREEG_METHODID 11 77 78 /* 79 * Acer ACPI method GUIDs 80 */ 81 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" 82 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" 83 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3" 84 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A" 85 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" 86 87 /* 88 * Acer ACPI event GUIDs 89 */ 90 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" 91 92 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); 93 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"); 94 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 95 96 enum acer_wmi_event_ids { 97 WMID_HOTKEY_EVENT = 0x1, 98 WMID_ACCEL_EVENT = 0x5, 99 }; 100 101 static const struct key_entry acer_wmi_keymap[] = { 102 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ 103 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */ 104 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */ 105 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ 106 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ 107 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ 108 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ 109 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ 110 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */ 111 {KE_IGNORE, 0x41, {KEY_MUTE} }, 112 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} }, 113 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} }, 114 {KE_IGNORE, 0x43, {KEY_NEXTSONG} }, 115 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} }, 116 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} }, 117 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} }, 118 {KE_IGNORE, 0x45, {KEY_STOP} }, 119 {KE_IGNORE, 0x50, {KEY_STOP} }, 120 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} }, 121 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} }, 122 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} }, 123 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} }, 124 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} }, 125 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} }, 126 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ 127 {KE_IGNORE, 0x81, {KEY_SLEEP} }, 128 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */ 129 {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} }, 130 {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} }, 131 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} }, 132 {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} }, 133 {KE_END, 0} 134 }; 135 136 static struct input_dev *acer_wmi_input_dev; 137 static struct input_dev *acer_wmi_accel_dev; 138 139 struct event_return_value { 140 u8 function; 141 u8 key_num; 142 u16 device_state; 143 u32 reserved; 144 } __attribute__((packed)); 145 146 /* 147 * GUID3 Get Device Status device flags 148 */ 149 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */ 150 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */ 151 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */ 152 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */ 153 #define ACER_WMID3_GDS_TOUCHPAD (1<<1) /* Touchpad */ 154 155 struct lm_input_params { 156 u8 function_num; /* Function Number */ 157 u16 commun_devices; /* Communication type devices default status */ 158 u16 devices; /* Other type devices default status */ 159 u8 lm_status; /* Launch Manager Status */ 160 u16 reserved; 161 } __attribute__((packed)); 162 163 struct lm_return_value { 164 u8 error_code; /* Error Code */ 165 u8 ec_return_value; /* EC Return Value */ 166 u16 reserved; 167 } __attribute__((packed)); 168 169 struct wmid3_gds_set_input_param { /* Set Device Status input parameter */ 170 u8 function_num; /* Function Number */ 171 u8 hotkey_number; /* Hotkey Number */ 172 u16 devices; /* Set Device */ 173 u8 volume_value; /* Volume Value */ 174 } __attribute__((packed)); 175 176 struct wmid3_gds_get_input_param { /* Get Device Status input parameter */ 177 u8 function_num; /* Function Number */ 178 u8 hotkey_number; /* Hotkey Number */ 179 u16 devices; /* Get Device */ 180 } __attribute__((packed)); 181 182 struct wmid3_gds_return_value { /* Get Device Status return value*/ 183 u8 error_code; /* Error Code */ 184 u8 ec_return_value; /* EC Return Value */ 185 u16 devices; /* Current Device Status */ 186 u32 reserved; 187 } __attribute__((packed)); 188 189 struct hotkey_function_type_aa { 190 u8 type; 191 u8 length; 192 u16 handle; 193 u16 commun_func_bitmap; 194 u16 application_func_bitmap; 195 u16 media_func_bitmap; 196 u16 display_func_bitmap; 197 u16 others_func_bitmap; 198 u8 commun_fn_key_number; 199 } __attribute__((packed)); 200 201 /* 202 * Interface capability flags 203 */ 204 #define ACER_CAP_MAILLED (1<<0) 205 #define ACER_CAP_WIRELESS (1<<1) 206 #define ACER_CAP_BLUETOOTH (1<<2) 207 #define ACER_CAP_BRIGHTNESS (1<<3) 208 #define ACER_CAP_THREEG (1<<4) 209 #define ACER_CAP_ACCEL (1<<5) 210 #define ACER_CAP_ANY (0xFFFFFFFF) 211 212 /* 213 * Interface type flags 214 */ 215 enum interface_flags { 216 ACER_AMW0, 217 ACER_AMW0_V2, 218 ACER_WMID, 219 ACER_WMID_v2, 220 }; 221 222 #define ACER_DEFAULT_WIRELESS 0 223 #define ACER_DEFAULT_BLUETOOTH 0 224 #define ACER_DEFAULT_MAILLED 0 225 #define ACER_DEFAULT_THREEG 0 226 227 static int max_brightness = 0xF; 228 229 static int mailled = -1; 230 static int brightness = -1; 231 static int threeg = -1; 232 static int force_series; 233 static bool ec_raw_mode; 234 static bool has_type_aa; 235 static u16 commun_func_bitmap; 236 static u8 commun_fn_key_number; 237 238 module_param(mailled, int, 0444); 239 module_param(brightness, int, 0444); 240 module_param(threeg, int, 0444); 241 module_param(force_series, int, 0444); 242 module_param(ec_raw_mode, bool, 0444); 243 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); 244 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); 245 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); 246 MODULE_PARM_DESC(force_series, "Force a different laptop series"); 247 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode"); 248 249 struct acer_data { 250 int mailled; 251 int threeg; 252 int brightness; 253 }; 254 255 struct acer_debug { 256 struct dentry *root; 257 struct dentry *devices; 258 u32 wmid_devices; 259 }; 260 261 static struct rfkill *wireless_rfkill; 262 static struct rfkill *bluetooth_rfkill; 263 static struct rfkill *threeg_rfkill; 264 static bool rfkill_inited; 265 266 /* Each low-level interface must define at least some of the following */ 267 struct wmi_interface { 268 /* The WMI device type */ 269 u32 type; 270 271 /* The capabilities this interface provides */ 272 u32 capability; 273 274 /* Private data for the current interface */ 275 struct acer_data data; 276 277 /* debugfs entries associated with this interface */ 278 struct acer_debug debug; 279 }; 280 281 /* The static interface pointer, points to the currently detected interface */ 282 static struct wmi_interface *interface; 283 284 /* 285 * Embedded Controller quirks 286 * Some laptops require us to directly access the EC to either enable or query 287 * features that are not available through WMI. 288 */ 289 290 struct quirk_entry { 291 u8 wireless; 292 u8 mailled; 293 s8 brightness; 294 u8 bluetooth; 295 }; 296 297 static struct quirk_entry *quirks; 298 299 static void set_quirks(void) 300 { 301 if (!interface) 302 return; 303 304 if (quirks->mailled) 305 interface->capability |= ACER_CAP_MAILLED; 306 307 if (quirks->brightness) 308 interface->capability |= ACER_CAP_BRIGHTNESS; 309 } 310 311 static int dmi_matched(const struct dmi_system_id *dmi) 312 { 313 quirks = dmi->driver_data; 314 return 1; 315 } 316 317 static struct quirk_entry quirk_unknown = { 318 }; 319 320 static struct quirk_entry quirk_acer_aspire_1520 = { 321 .brightness = -1, 322 }; 323 324 static struct quirk_entry quirk_acer_travelmate_2490 = { 325 .mailled = 1, 326 }; 327 328 /* This AMW0 laptop has no bluetooth */ 329 static struct quirk_entry quirk_medion_md_98300 = { 330 .wireless = 1, 331 }; 332 333 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { 334 .wireless = 2, 335 }; 336 337 static struct quirk_entry quirk_lenovo_ideapad_s205 = { 338 .wireless = 3, 339 }; 340 341 /* The Aspire One has a dummy ACPI-WMI interface - disable it */ 342 static struct dmi_system_id acer_blacklist[] = { 343 { 344 .ident = "Acer Aspire One (SSD)", 345 .matches = { 346 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 347 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), 348 }, 349 }, 350 { 351 .ident = "Acer Aspire One (HDD)", 352 .matches = { 353 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 354 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), 355 }, 356 }, 357 {} 358 }; 359 360 static struct dmi_system_id acer_quirks[] = { 361 { 362 .callback = dmi_matched, 363 .ident = "Acer Aspire 1360", 364 .matches = { 365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), 367 }, 368 .driver_data = &quirk_acer_aspire_1520, 369 }, 370 { 371 .callback = dmi_matched, 372 .ident = "Acer Aspire 1520", 373 .matches = { 374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), 376 }, 377 .driver_data = &quirk_acer_aspire_1520, 378 }, 379 { 380 .callback = dmi_matched, 381 .ident = "Acer Aspire 3100", 382 .matches = { 383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), 385 }, 386 .driver_data = &quirk_acer_travelmate_2490, 387 }, 388 { 389 .callback = dmi_matched, 390 .ident = "Acer Aspire 3610", 391 .matches = { 392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), 394 }, 395 .driver_data = &quirk_acer_travelmate_2490, 396 }, 397 { 398 .callback = dmi_matched, 399 .ident = "Acer Aspire 5100", 400 .matches = { 401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), 403 }, 404 .driver_data = &quirk_acer_travelmate_2490, 405 }, 406 { 407 .callback = dmi_matched, 408 .ident = "Acer Aspire 5610", 409 .matches = { 410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 411 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), 412 }, 413 .driver_data = &quirk_acer_travelmate_2490, 414 }, 415 { 416 .callback = dmi_matched, 417 .ident = "Acer Aspire 5630", 418 .matches = { 419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 420 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), 421 }, 422 .driver_data = &quirk_acer_travelmate_2490, 423 }, 424 { 425 .callback = dmi_matched, 426 .ident = "Acer Aspire 5650", 427 .matches = { 428 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 429 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), 430 }, 431 .driver_data = &quirk_acer_travelmate_2490, 432 }, 433 { 434 .callback = dmi_matched, 435 .ident = "Acer Aspire 5680", 436 .matches = { 437 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 438 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), 439 }, 440 .driver_data = &quirk_acer_travelmate_2490, 441 }, 442 { 443 .callback = dmi_matched, 444 .ident = "Acer Aspire 9110", 445 .matches = { 446 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 447 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), 448 }, 449 .driver_data = &quirk_acer_travelmate_2490, 450 }, 451 { 452 .callback = dmi_matched, 453 .ident = "Acer TravelMate 2490", 454 .matches = { 455 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 456 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), 457 }, 458 .driver_data = &quirk_acer_travelmate_2490, 459 }, 460 { 461 .callback = dmi_matched, 462 .ident = "Acer TravelMate 4200", 463 .matches = { 464 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 465 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), 466 }, 467 .driver_data = &quirk_acer_travelmate_2490, 468 }, 469 { 470 .callback = dmi_matched, 471 .ident = "Fujitsu Siemens Amilo Li 1718", 472 .matches = { 473 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 474 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), 475 }, 476 .driver_data = &quirk_fujitsu_amilo_li_1718, 477 }, 478 { 479 .callback = dmi_matched, 480 .ident = "Medion MD 98300", 481 .matches = { 482 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 483 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), 484 }, 485 .driver_data = &quirk_medion_md_98300, 486 }, 487 { 488 .callback = dmi_matched, 489 .ident = "Lenovo Ideapad S205", 490 .matches = { 491 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 492 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"), 493 }, 494 .driver_data = &quirk_lenovo_ideapad_s205, 495 }, 496 { 497 .callback = dmi_matched, 498 .ident = "Lenovo Ideapad S205 (Brazos)", 499 .matches = { 500 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 501 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"), 502 }, 503 .driver_data = &quirk_lenovo_ideapad_s205, 504 }, 505 { 506 .callback = dmi_matched, 507 .ident = "Lenovo 3000 N200", 508 .matches = { 509 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 510 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"), 511 }, 512 .driver_data = &quirk_fujitsu_amilo_li_1718, 513 }, 514 {} 515 }; 516 517 static int video_set_backlight_video_vendor(const struct dmi_system_id *d) 518 { 519 interface->capability &= ~ACER_CAP_BRIGHTNESS; 520 pr_info("Brightness must be controlled by generic video driver\n"); 521 return 0; 522 } 523 524 static const struct dmi_system_id video_vendor_dmi_table[] = { 525 { 526 .callback = video_set_backlight_video_vendor, 527 .ident = "Acer TravelMate 4750", 528 .matches = { 529 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 530 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"), 531 }, 532 }, 533 { 534 .callback = video_set_backlight_video_vendor, 535 .ident = "Acer Extensa 5235", 536 .matches = { 537 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 538 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"), 539 }, 540 }, 541 { 542 .callback = video_set_backlight_video_vendor, 543 .ident = "Acer TravelMate 5760", 544 .matches = { 545 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 546 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"), 547 }, 548 }, 549 { 550 .callback = video_set_backlight_video_vendor, 551 .ident = "Acer Aspire 5750", 552 .matches = { 553 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), 554 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"), 555 }, 556 }, 557 {} 558 }; 559 560 /* Find which quirks are needed for a particular vendor/ model pair */ 561 static void find_quirks(void) 562 { 563 if (!force_series) { 564 dmi_check_system(acer_quirks); 565 } else if (force_series == 2490) { 566 quirks = &quirk_acer_travelmate_2490; 567 } 568 569 if (quirks == NULL) 570 quirks = &quirk_unknown; 571 572 set_quirks(); 573 } 574 575 /* 576 * General interface convenience methods 577 */ 578 579 static bool has_cap(u32 cap) 580 { 581 if ((interface->capability & cap) != 0) 582 return 1; 583 584 return 0; 585 } 586 587 /* 588 * AMW0 (V1) interface 589 */ 590 struct wmab_args { 591 u32 eax; 592 u32 ebx; 593 u32 ecx; 594 u32 edx; 595 }; 596 597 struct wmab_ret { 598 u32 eax; 599 u32 ebx; 600 u32 ecx; 601 u32 edx; 602 u32 eex; 603 }; 604 605 static acpi_status wmab_execute(struct wmab_args *regbuf, 606 struct acpi_buffer *result) 607 { 608 struct acpi_buffer input; 609 acpi_status status; 610 input.length = sizeof(struct wmab_args); 611 input.pointer = (u8 *)regbuf; 612 613 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); 614 615 return status; 616 } 617 618 static acpi_status AMW0_get_u32(u32 *value, u32 cap) 619 { 620 int err; 621 u8 result; 622 623 switch (cap) { 624 case ACER_CAP_MAILLED: 625 switch (quirks->mailled) { 626 default: 627 err = ec_read(0xA, &result); 628 if (err) 629 return AE_ERROR; 630 *value = (result >> 7) & 0x1; 631 return AE_OK; 632 } 633 break; 634 case ACER_CAP_WIRELESS: 635 switch (quirks->wireless) { 636 case 1: 637 err = ec_read(0x7B, &result); 638 if (err) 639 return AE_ERROR; 640 *value = result & 0x1; 641 return AE_OK; 642 case 2: 643 err = ec_read(0x71, &result); 644 if (err) 645 return AE_ERROR; 646 *value = result & 0x1; 647 return AE_OK; 648 case 3: 649 err = ec_read(0x78, &result); 650 if (err) 651 return AE_ERROR; 652 *value = result & 0x1; 653 return AE_OK; 654 default: 655 err = ec_read(0xA, &result); 656 if (err) 657 return AE_ERROR; 658 *value = (result >> 2) & 0x1; 659 return AE_OK; 660 } 661 break; 662 case ACER_CAP_BLUETOOTH: 663 switch (quirks->bluetooth) { 664 default: 665 err = ec_read(0xA, &result); 666 if (err) 667 return AE_ERROR; 668 *value = (result >> 4) & 0x1; 669 return AE_OK; 670 } 671 break; 672 case ACER_CAP_BRIGHTNESS: 673 switch (quirks->brightness) { 674 default: 675 err = ec_read(0x83, &result); 676 if (err) 677 return AE_ERROR; 678 *value = result; 679 return AE_OK; 680 } 681 break; 682 default: 683 return AE_ERROR; 684 } 685 return AE_OK; 686 } 687 688 static acpi_status AMW0_set_u32(u32 value, u32 cap) 689 { 690 struct wmab_args args; 691 692 args.eax = ACER_AMW0_WRITE; 693 args.ebx = value ? (1<<8) : 0; 694 args.ecx = args.edx = 0; 695 696 switch (cap) { 697 case ACER_CAP_MAILLED: 698 if (value > 1) 699 return AE_BAD_PARAMETER; 700 args.ebx |= ACER_AMW0_MAILLED_MASK; 701 break; 702 case ACER_CAP_WIRELESS: 703 if (value > 1) 704 return AE_BAD_PARAMETER; 705 args.ebx |= ACER_AMW0_WIRELESS_MASK; 706 break; 707 case ACER_CAP_BLUETOOTH: 708 if (value > 1) 709 return AE_BAD_PARAMETER; 710 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 711 break; 712 case ACER_CAP_BRIGHTNESS: 713 if (value > max_brightness) 714 return AE_BAD_PARAMETER; 715 switch (quirks->brightness) { 716 default: 717 return ec_write(0x83, value); 718 break; 719 } 720 default: 721 return AE_ERROR; 722 } 723 724 /* Actually do the set */ 725 return wmab_execute(&args, NULL); 726 } 727 728 static acpi_status AMW0_find_mailled(void) 729 { 730 struct wmab_args args; 731 struct wmab_ret ret; 732 acpi_status status = AE_OK; 733 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 734 union acpi_object *obj; 735 736 args.eax = 0x86; 737 args.ebx = args.ecx = args.edx = 0; 738 739 status = wmab_execute(&args, &out); 740 if (ACPI_FAILURE(status)) 741 return status; 742 743 obj = (union acpi_object *) out.pointer; 744 if (obj && obj->type == ACPI_TYPE_BUFFER && 745 obj->buffer.length == sizeof(struct wmab_ret)) { 746 ret = *((struct wmab_ret *) obj->buffer.pointer); 747 } else { 748 kfree(out.pointer); 749 return AE_ERROR; 750 } 751 752 if (ret.eex & 0x1) 753 interface->capability |= ACER_CAP_MAILLED; 754 755 kfree(out.pointer); 756 757 return AE_OK; 758 } 759 760 static int AMW0_set_cap_acpi_check_device_found; 761 762 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle, 763 u32 level, void *context, void **retval) 764 { 765 AMW0_set_cap_acpi_check_device_found = 1; 766 return AE_OK; 767 } 768 769 static const struct acpi_device_id norfkill_ids[] = { 770 { "VPC2004", 0}, 771 { "IBM0068", 0}, 772 { "LEN0068", 0}, 773 { "SNY5001", 0}, /* sony-laptop in charge */ 774 { "", 0}, 775 }; 776 777 static int AMW0_set_cap_acpi_check_device(void) 778 { 779 const struct acpi_device_id *id; 780 781 for (id = norfkill_ids; id->id[0]; id++) 782 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb, 783 NULL, NULL); 784 return AMW0_set_cap_acpi_check_device_found; 785 } 786 787 static acpi_status AMW0_set_capabilities(void) 788 { 789 struct wmab_args args; 790 struct wmab_ret ret; 791 acpi_status status; 792 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; 793 union acpi_object *obj; 794 795 /* 796 * On laptops with this strange GUID (non Acer), normal probing doesn't 797 * work. 798 */ 799 if (wmi_has_guid(AMW0_GUID2)) { 800 if ((quirks != &quirk_unknown) || 801 !AMW0_set_cap_acpi_check_device()) 802 interface->capability |= ACER_CAP_WIRELESS; 803 return AE_OK; 804 } 805 806 args.eax = ACER_AMW0_WRITE; 807 args.ecx = args.edx = 0; 808 809 args.ebx = 0xa2 << 8; 810 args.ebx |= ACER_AMW0_WIRELESS_MASK; 811 812 status = wmab_execute(&args, &out); 813 if (ACPI_FAILURE(status)) 814 return status; 815 816 obj = out.pointer; 817 if (obj && obj->type == ACPI_TYPE_BUFFER && 818 obj->buffer.length == sizeof(struct wmab_ret)) { 819 ret = *((struct wmab_ret *) obj->buffer.pointer); 820 } else { 821 status = AE_ERROR; 822 goto out; 823 } 824 825 if (ret.eax & 0x1) 826 interface->capability |= ACER_CAP_WIRELESS; 827 828 args.ebx = 2 << 8; 829 args.ebx |= ACER_AMW0_BLUETOOTH_MASK; 830 831 /* 832 * It's ok to use existing buffer for next wmab_execute call. 833 * But we need to kfree(out.pointer) if next wmab_execute fail. 834 */ 835 status = wmab_execute(&args, &out); 836 if (ACPI_FAILURE(status)) 837 goto out; 838 839 obj = (union acpi_object *) out.pointer; 840 if (obj && obj->type == ACPI_TYPE_BUFFER 841 && obj->buffer.length == sizeof(struct wmab_ret)) { 842 ret = *((struct wmab_ret *) obj->buffer.pointer); 843 } else { 844 status = AE_ERROR; 845 goto out; 846 } 847 848 if (ret.eax & 0x1) 849 interface->capability |= ACER_CAP_BLUETOOTH; 850 851 /* 852 * This appears to be safe to enable, since all Wistron based laptops 853 * appear to use the same EC register for brightness, even if they 854 * differ for wireless, etc 855 */ 856 if (quirks->brightness >= 0) 857 interface->capability |= ACER_CAP_BRIGHTNESS; 858 859 status = AE_OK; 860 out: 861 kfree(out.pointer); 862 return status; 863 } 864 865 static struct wmi_interface AMW0_interface = { 866 .type = ACER_AMW0, 867 }; 868 869 static struct wmi_interface AMW0_V2_interface = { 870 .type = ACER_AMW0_V2, 871 }; 872 873 /* 874 * New interface (The WMID interface) 875 */ 876 static acpi_status 877 WMI_execute_u32(u32 method_id, u32 in, u32 *out) 878 { 879 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; 880 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; 881 union acpi_object *obj; 882 u32 tmp = 0; 883 acpi_status status; 884 885 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); 886 887 if (ACPI_FAILURE(status)) 888 return status; 889 890 obj = (union acpi_object *) result.pointer; 891 if (obj) { 892 if (obj->type == ACPI_TYPE_BUFFER && 893 (obj->buffer.length == sizeof(u32) || 894 obj->buffer.length == sizeof(u64))) { 895 tmp = *((u32 *) obj->buffer.pointer); 896 } else if (obj->type == ACPI_TYPE_INTEGER) { 897 tmp = (u32) obj->integer.value; 898 } 899 } 900 901 if (out) 902 *out = tmp; 903 904 kfree(result.pointer); 905 906 return status; 907 } 908 909 static acpi_status WMID_get_u32(u32 *value, u32 cap) 910 { 911 acpi_status status; 912 u8 tmp; 913 u32 result, method_id = 0; 914 915 switch (cap) { 916 case ACER_CAP_WIRELESS: 917 method_id = ACER_WMID_GET_WIRELESS_METHODID; 918 break; 919 case ACER_CAP_BLUETOOTH: 920 method_id = ACER_WMID_GET_BLUETOOTH_METHODID; 921 break; 922 case ACER_CAP_BRIGHTNESS: 923 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; 924 break; 925 case ACER_CAP_THREEG: 926 method_id = ACER_WMID_GET_THREEG_METHODID; 927 break; 928 case ACER_CAP_MAILLED: 929 if (quirks->mailled == 1) { 930 ec_read(0x9f, &tmp); 931 *value = tmp & 0x1; 932 return 0; 933 } 934 default: 935 return AE_ERROR; 936 } 937 status = WMI_execute_u32(method_id, 0, &result); 938 939 if (ACPI_SUCCESS(status)) 940 *value = (u8)result; 941 942 return status; 943 } 944 945 static acpi_status WMID_set_u32(u32 value, u32 cap) 946 { 947 u32 method_id = 0; 948 char param; 949 950 switch (cap) { 951 case ACER_CAP_BRIGHTNESS: 952 if (value > max_brightness) 953 return AE_BAD_PARAMETER; 954 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; 955 break; 956 case ACER_CAP_WIRELESS: 957 if (value > 1) 958 return AE_BAD_PARAMETER; 959 method_id = ACER_WMID_SET_WIRELESS_METHODID; 960 break; 961 case ACER_CAP_BLUETOOTH: 962 if (value > 1) 963 return AE_BAD_PARAMETER; 964 method_id = ACER_WMID_SET_BLUETOOTH_METHODID; 965 break; 966 case ACER_CAP_THREEG: 967 if (value > 1) 968 return AE_BAD_PARAMETER; 969 method_id = ACER_WMID_SET_THREEG_METHODID; 970 break; 971 case ACER_CAP_MAILLED: 972 if (value > 1) 973 return AE_BAD_PARAMETER; 974 if (quirks->mailled == 1) { 975 param = value ? 0x92 : 0x93; 976 i8042_lock_chip(); 977 i8042_command(¶m, 0x1059); 978 i8042_unlock_chip(); 979 return 0; 980 } 981 break; 982 default: 983 return AE_ERROR; 984 } 985 return WMI_execute_u32(method_id, (u32)value, NULL); 986 } 987 988 static acpi_status wmid3_get_device_status(u32 *value, u16 device) 989 { 990 struct wmid3_gds_return_value return_value; 991 acpi_status status; 992 union acpi_object *obj; 993 struct wmid3_gds_get_input_param params = { 994 .function_num = 0x1, 995 .hotkey_number = commun_fn_key_number, 996 .devices = device, 997 }; 998 struct acpi_buffer input = { 999 sizeof(struct wmid3_gds_get_input_param), 1000 ¶ms 1001 }; 1002 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1003 1004 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output); 1005 if (ACPI_FAILURE(status)) 1006 return status; 1007 1008 obj = output.pointer; 1009 1010 if (!obj) 1011 return AE_ERROR; 1012 else if (obj->type != ACPI_TYPE_BUFFER) { 1013 kfree(obj); 1014 return AE_ERROR; 1015 } 1016 if (obj->buffer.length != 8) { 1017 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1018 kfree(obj); 1019 return AE_ERROR; 1020 } 1021 1022 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1023 kfree(obj); 1024 1025 if (return_value.error_code || return_value.ec_return_value) 1026 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n", 1027 device, 1028 return_value.error_code, 1029 return_value.ec_return_value); 1030 else 1031 *value = !!(return_value.devices & device); 1032 1033 return status; 1034 } 1035 1036 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap) 1037 { 1038 u16 device; 1039 1040 switch (cap) { 1041 case ACER_CAP_WIRELESS: 1042 device = ACER_WMID3_GDS_WIRELESS; 1043 break; 1044 case ACER_CAP_BLUETOOTH: 1045 device = ACER_WMID3_GDS_BLUETOOTH; 1046 break; 1047 case ACER_CAP_THREEG: 1048 device = ACER_WMID3_GDS_THREEG; 1049 break; 1050 default: 1051 return AE_ERROR; 1052 } 1053 return wmid3_get_device_status(value, device); 1054 } 1055 1056 static acpi_status wmid3_set_device_status(u32 value, u16 device) 1057 { 1058 struct wmid3_gds_return_value return_value; 1059 acpi_status status; 1060 union acpi_object *obj; 1061 u16 devices; 1062 struct wmid3_gds_get_input_param get_params = { 1063 .function_num = 0x1, 1064 .hotkey_number = commun_fn_key_number, 1065 .devices = commun_func_bitmap, 1066 }; 1067 struct acpi_buffer get_input = { 1068 sizeof(struct wmid3_gds_get_input_param), 1069 &get_params 1070 }; 1071 struct wmid3_gds_set_input_param set_params = { 1072 .function_num = 0x2, 1073 .hotkey_number = commun_fn_key_number, 1074 .devices = commun_func_bitmap, 1075 }; 1076 struct acpi_buffer set_input = { 1077 sizeof(struct wmid3_gds_set_input_param), 1078 &set_params 1079 }; 1080 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1081 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL }; 1082 1083 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output); 1084 if (ACPI_FAILURE(status)) 1085 return status; 1086 1087 obj = output.pointer; 1088 1089 if (!obj) 1090 return AE_ERROR; 1091 else if (obj->type != ACPI_TYPE_BUFFER) { 1092 kfree(obj); 1093 return AE_ERROR; 1094 } 1095 if (obj->buffer.length != 8) { 1096 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1097 kfree(obj); 1098 return AE_ERROR; 1099 } 1100 1101 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer); 1102 kfree(obj); 1103 1104 if (return_value.error_code || return_value.ec_return_value) { 1105 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n", 1106 return_value.error_code, 1107 return_value.ec_return_value); 1108 return status; 1109 } 1110 1111 devices = return_value.devices; 1112 set_params.devices = (value) ? (devices | device) : (devices & ~device); 1113 1114 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2); 1115 if (ACPI_FAILURE(status)) 1116 return status; 1117 1118 obj = output2.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 != 4) { 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("Set Device Status failed: 0x%x - 0x%x\n", 1137 return_value.error_code, 1138 return_value.ec_return_value); 1139 1140 return status; 1141 } 1142 1143 static acpi_status wmid_v2_set_u32(u32 value, u32 cap) 1144 { 1145 u16 device; 1146 1147 switch (cap) { 1148 case ACER_CAP_WIRELESS: 1149 device = ACER_WMID3_GDS_WIRELESS; 1150 break; 1151 case ACER_CAP_BLUETOOTH: 1152 device = ACER_WMID3_GDS_BLUETOOTH; 1153 break; 1154 case ACER_CAP_THREEG: 1155 device = ACER_WMID3_GDS_THREEG; 1156 break; 1157 default: 1158 return AE_ERROR; 1159 } 1160 return wmid3_set_device_status(value, device); 1161 } 1162 1163 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy) 1164 { 1165 struct hotkey_function_type_aa *type_aa; 1166 1167 /* We are looking for OEM-specific Type AAh */ 1168 if (header->type != 0xAA) 1169 return; 1170 1171 has_type_aa = true; 1172 type_aa = (struct hotkey_function_type_aa *) header; 1173 1174 pr_info("Function bitmap for Communication Button: 0x%x\n", 1175 type_aa->commun_func_bitmap); 1176 commun_func_bitmap = type_aa->commun_func_bitmap; 1177 1178 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS) 1179 interface->capability |= ACER_CAP_WIRELESS; 1180 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG) 1181 interface->capability |= ACER_CAP_THREEG; 1182 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH) 1183 interface->capability |= ACER_CAP_BLUETOOTH; 1184 1185 commun_fn_key_number = type_aa->commun_fn_key_number; 1186 } 1187 1188 static acpi_status WMID_set_capabilities(void) 1189 { 1190 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1191 union acpi_object *obj; 1192 acpi_status status; 1193 u32 devices; 1194 1195 status = wmi_query_block(WMID_GUID2, 1, &out); 1196 if (ACPI_FAILURE(status)) 1197 return status; 1198 1199 obj = (union acpi_object *) out.pointer; 1200 if (obj) { 1201 if (obj->type == ACPI_TYPE_BUFFER && 1202 (obj->buffer.length == sizeof(u32) || 1203 obj->buffer.length == sizeof(u64))) { 1204 devices = *((u32 *) obj->buffer.pointer); 1205 } else if (obj->type == ACPI_TYPE_INTEGER) { 1206 devices = (u32) obj->integer.value; 1207 } 1208 } else { 1209 kfree(out.pointer); 1210 return AE_ERROR; 1211 } 1212 1213 pr_info("Function bitmap for Communication Device: 0x%x\n", devices); 1214 if (devices & 0x07) 1215 interface->capability |= ACER_CAP_WIRELESS; 1216 if (devices & 0x40) 1217 interface->capability |= ACER_CAP_THREEG; 1218 if (devices & 0x10) 1219 interface->capability |= ACER_CAP_BLUETOOTH; 1220 1221 if (!(devices & 0x20)) 1222 max_brightness = 0x9; 1223 1224 kfree(out.pointer); 1225 return status; 1226 } 1227 1228 static struct wmi_interface wmid_interface = { 1229 .type = ACER_WMID, 1230 }; 1231 1232 static struct wmi_interface wmid_v2_interface = { 1233 .type = ACER_WMID_v2, 1234 }; 1235 1236 /* 1237 * Generic Device (interface-independent) 1238 */ 1239 1240 static acpi_status get_u32(u32 *value, u32 cap) 1241 { 1242 acpi_status status = AE_ERROR; 1243 1244 switch (interface->type) { 1245 case ACER_AMW0: 1246 status = AMW0_get_u32(value, cap); 1247 break; 1248 case ACER_AMW0_V2: 1249 if (cap == ACER_CAP_MAILLED) { 1250 status = AMW0_get_u32(value, cap); 1251 break; 1252 } 1253 case ACER_WMID: 1254 status = WMID_get_u32(value, cap); 1255 break; 1256 case ACER_WMID_v2: 1257 if (cap & (ACER_CAP_WIRELESS | 1258 ACER_CAP_BLUETOOTH | 1259 ACER_CAP_THREEG)) 1260 status = wmid_v2_get_u32(value, cap); 1261 else if (wmi_has_guid(WMID_GUID2)) 1262 status = WMID_get_u32(value, cap); 1263 break; 1264 } 1265 1266 return status; 1267 } 1268 1269 static acpi_status set_u32(u32 value, u32 cap) 1270 { 1271 acpi_status status; 1272 1273 if (interface->capability & cap) { 1274 switch (interface->type) { 1275 case ACER_AMW0: 1276 return AMW0_set_u32(value, cap); 1277 case ACER_AMW0_V2: 1278 if (cap == ACER_CAP_MAILLED) 1279 return AMW0_set_u32(value, cap); 1280 1281 /* 1282 * On some models, some WMID methods don't toggle 1283 * properly. For those cases, we want to run the AMW0 1284 * method afterwards to be certain we've really toggled 1285 * the device state. 1286 */ 1287 if (cap == ACER_CAP_WIRELESS || 1288 cap == ACER_CAP_BLUETOOTH) { 1289 status = WMID_set_u32(value, cap); 1290 if (ACPI_FAILURE(status)) 1291 return status; 1292 1293 return AMW0_set_u32(value, cap); 1294 } 1295 case ACER_WMID: 1296 return WMID_set_u32(value, cap); 1297 case ACER_WMID_v2: 1298 if (cap & (ACER_CAP_WIRELESS | 1299 ACER_CAP_BLUETOOTH | 1300 ACER_CAP_THREEG)) 1301 return wmid_v2_set_u32(value, cap); 1302 else if (wmi_has_guid(WMID_GUID2)) 1303 return WMID_set_u32(value, cap); 1304 default: 1305 return AE_BAD_PARAMETER; 1306 } 1307 } 1308 return AE_BAD_PARAMETER; 1309 } 1310 1311 static void __init acer_commandline_init(void) 1312 { 1313 /* 1314 * These will all fail silently if the value given is invalid, or the 1315 * capability isn't available on the given interface 1316 */ 1317 if (mailled >= 0) 1318 set_u32(mailled, ACER_CAP_MAILLED); 1319 if (!has_type_aa && threeg >= 0) 1320 set_u32(threeg, ACER_CAP_THREEG); 1321 if (brightness >= 0) 1322 set_u32(brightness, ACER_CAP_BRIGHTNESS); 1323 } 1324 1325 /* 1326 * LED device (Mail LED only, no other LEDs known yet) 1327 */ 1328 static void mail_led_set(struct led_classdev *led_cdev, 1329 enum led_brightness value) 1330 { 1331 set_u32(value, ACER_CAP_MAILLED); 1332 } 1333 1334 static struct led_classdev mail_led = { 1335 .name = "acer-wmi::mail", 1336 .brightness_set = mail_led_set, 1337 }; 1338 1339 static int acer_led_init(struct device *dev) 1340 { 1341 return led_classdev_register(dev, &mail_led); 1342 } 1343 1344 static void acer_led_exit(void) 1345 { 1346 set_u32(LED_OFF, ACER_CAP_MAILLED); 1347 led_classdev_unregister(&mail_led); 1348 } 1349 1350 /* 1351 * Backlight device 1352 */ 1353 static struct backlight_device *acer_backlight_device; 1354 1355 static int read_brightness(struct backlight_device *bd) 1356 { 1357 u32 value; 1358 get_u32(&value, ACER_CAP_BRIGHTNESS); 1359 return value; 1360 } 1361 1362 static int update_bl_status(struct backlight_device *bd) 1363 { 1364 int intensity = bd->props.brightness; 1365 1366 if (bd->props.power != FB_BLANK_UNBLANK) 1367 intensity = 0; 1368 if (bd->props.fb_blank != FB_BLANK_UNBLANK) 1369 intensity = 0; 1370 1371 set_u32(intensity, ACER_CAP_BRIGHTNESS); 1372 1373 return 0; 1374 } 1375 1376 static const struct backlight_ops acer_bl_ops = { 1377 .get_brightness = read_brightness, 1378 .update_status = update_bl_status, 1379 }; 1380 1381 static int acer_backlight_init(struct device *dev) 1382 { 1383 struct backlight_properties props; 1384 struct backlight_device *bd; 1385 1386 memset(&props, 0, sizeof(struct backlight_properties)); 1387 props.type = BACKLIGHT_PLATFORM; 1388 props.max_brightness = max_brightness; 1389 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops, 1390 &props); 1391 if (IS_ERR(bd)) { 1392 pr_err("Could not register Acer backlight device\n"); 1393 acer_backlight_device = NULL; 1394 return PTR_ERR(bd); 1395 } 1396 1397 acer_backlight_device = bd; 1398 1399 bd->props.power = FB_BLANK_UNBLANK; 1400 bd->props.brightness = read_brightness(bd); 1401 backlight_update_status(bd); 1402 return 0; 1403 } 1404 1405 static void acer_backlight_exit(void) 1406 { 1407 backlight_device_unregister(acer_backlight_device); 1408 } 1409 1410 /* 1411 * Accelerometer device 1412 */ 1413 static acpi_handle gsensor_handle; 1414 1415 static int acer_gsensor_init(void) 1416 { 1417 acpi_status status; 1418 struct acpi_buffer output; 1419 union acpi_object out_obj; 1420 1421 output.length = sizeof(out_obj); 1422 output.pointer = &out_obj; 1423 status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output); 1424 if (ACPI_FAILURE(status)) 1425 return -1; 1426 1427 return 0; 1428 } 1429 1430 static int acer_gsensor_open(struct input_dev *input) 1431 { 1432 return acer_gsensor_init(); 1433 } 1434 1435 static int acer_gsensor_event(void) 1436 { 1437 acpi_status status; 1438 struct acpi_buffer output; 1439 union acpi_object out_obj[5]; 1440 1441 if (!has_cap(ACER_CAP_ACCEL)) 1442 return -1; 1443 1444 output.length = sizeof(out_obj); 1445 output.pointer = out_obj; 1446 1447 status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output); 1448 if (ACPI_FAILURE(status)) 1449 return -1; 1450 1451 if (out_obj->package.count != 4) 1452 return -1; 1453 1454 input_report_abs(acer_wmi_accel_dev, ABS_X, 1455 (s16)out_obj->package.elements[0].integer.value); 1456 input_report_abs(acer_wmi_accel_dev, ABS_Y, 1457 (s16)out_obj->package.elements[1].integer.value); 1458 input_report_abs(acer_wmi_accel_dev, ABS_Z, 1459 (s16)out_obj->package.elements[2].integer.value); 1460 input_sync(acer_wmi_accel_dev); 1461 return 0; 1462 } 1463 1464 /* 1465 * Rfkill devices 1466 */ 1467 static void acer_rfkill_update(struct work_struct *ignored); 1468 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); 1469 static void acer_rfkill_update(struct work_struct *ignored) 1470 { 1471 u32 state; 1472 acpi_status status; 1473 1474 if (has_cap(ACER_CAP_WIRELESS)) { 1475 status = get_u32(&state, ACER_CAP_WIRELESS); 1476 if (ACPI_SUCCESS(status)) { 1477 if (quirks->wireless == 3) 1478 rfkill_set_hw_state(wireless_rfkill, !state); 1479 else 1480 rfkill_set_sw_state(wireless_rfkill, !state); 1481 } 1482 } 1483 1484 if (has_cap(ACER_CAP_BLUETOOTH)) { 1485 status = get_u32(&state, ACER_CAP_BLUETOOTH); 1486 if (ACPI_SUCCESS(status)) 1487 rfkill_set_sw_state(bluetooth_rfkill, !state); 1488 } 1489 1490 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) { 1491 status = get_u32(&state, ACER_WMID3_GDS_THREEG); 1492 if (ACPI_SUCCESS(status)) 1493 rfkill_set_sw_state(threeg_rfkill, !state); 1494 } 1495 1496 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); 1497 } 1498 1499 static int acer_rfkill_set(void *data, bool blocked) 1500 { 1501 acpi_status status; 1502 u32 cap = (unsigned long)data; 1503 1504 if (rfkill_inited) { 1505 status = set_u32(!blocked, cap); 1506 if (ACPI_FAILURE(status)) 1507 return -ENODEV; 1508 } 1509 1510 return 0; 1511 } 1512 1513 static const struct rfkill_ops acer_rfkill_ops = { 1514 .set_block = acer_rfkill_set, 1515 }; 1516 1517 static struct rfkill *acer_rfkill_register(struct device *dev, 1518 enum rfkill_type type, 1519 char *name, u32 cap) 1520 { 1521 int err; 1522 struct rfkill *rfkill_dev; 1523 u32 state; 1524 acpi_status status; 1525 1526 rfkill_dev = rfkill_alloc(name, dev, type, 1527 &acer_rfkill_ops, 1528 (void *)(unsigned long)cap); 1529 if (!rfkill_dev) 1530 return ERR_PTR(-ENOMEM); 1531 1532 status = get_u32(&state, cap); 1533 1534 err = rfkill_register(rfkill_dev); 1535 if (err) { 1536 rfkill_destroy(rfkill_dev); 1537 return ERR_PTR(err); 1538 } 1539 1540 if (ACPI_SUCCESS(status)) 1541 rfkill_set_sw_state(rfkill_dev, !state); 1542 1543 return rfkill_dev; 1544 } 1545 1546 static int acer_rfkill_init(struct device *dev) 1547 { 1548 int err; 1549 1550 if (has_cap(ACER_CAP_WIRELESS)) { 1551 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, 1552 "acer-wireless", ACER_CAP_WIRELESS); 1553 if (IS_ERR(wireless_rfkill)) { 1554 err = PTR_ERR(wireless_rfkill); 1555 goto error_wireless; 1556 } 1557 } 1558 1559 if (has_cap(ACER_CAP_BLUETOOTH)) { 1560 bluetooth_rfkill = acer_rfkill_register(dev, 1561 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", 1562 ACER_CAP_BLUETOOTH); 1563 if (IS_ERR(bluetooth_rfkill)) { 1564 err = PTR_ERR(bluetooth_rfkill); 1565 goto error_bluetooth; 1566 } 1567 } 1568 1569 if (has_cap(ACER_CAP_THREEG)) { 1570 threeg_rfkill = acer_rfkill_register(dev, 1571 RFKILL_TYPE_WWAN, "acer-threeg", 1572 ACER_CAP_THREEG); 1573 if (IS_ERR(threeg_rfkill)) { 1574 err = PTR_ERR(threeg_rfkill); 1575 goto error_threeg; 1576 } 1577 } 1578 1579 rfkill_inited = true; 1580 1581 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1582 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1583 schedule_delayed_work(&acer_rfkill_work, 1584 round_jiffies_relative(HZ)); 1585 1586 return 0; 1587 1588 error_threeg: 1589 if (has_cap(ACER_CAP_BLUETOOTH)) { 1590 rfkill_unregister(bluetooth_rfkill); 1591 rfkill_destroy(bluetooth_rfkill); 1592 } 1593 error_bluetooth: 1594 if (has_cap(ACER_CAP_WIRELESS)) { 1595 rfkill_unregister(wireless_rfkill); 1596 rfkill_destroy(wireless_rfkill); 1597 } 1598 error_wireless: 1599 return err; 1600 } 1601 1602 static void acer_rfkill_exit(void) 1603 { 1604 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) && 1605 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG)) 1606 cancel_delayed_work_sync(&acer_rfkill_work); 1607 1608 if (has_cap(ACER_CAP_WIRELESS)) { 1609 rfkill_unregister(wireless_rfkill); 1610 rfkill_destroy(wireless_rfkill); 1611 } 1612 1613 if (has_cap(ACER_CAP_BLUETOOTH)) { 1614 rfkill_unregister(bluetooth_rfkill); 1615 rfkill_destroy(bluetooth_rfkill); 1616 } 1617 1618 if (has_cap(ACER_CAP_THREEG)) { 1619 rfkill_unregister(threeg_rfkill); 1620 rfkill_destroy(threeg_rfkill); 1621 } 1622 return; 1623 } 1624 1625 /* 1626 * sysfs interface 1627 */ 1628 static ssize_t show_bool_threeg(struct device *dev, 1629 struct device_attribute *attr, char *buf) 1630 { 1631 u32 result; \ 1632 acpi_status status; 1633 1634 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1635 current->comm); 1636 status = get_u32(&result, ACER_CAP_THREEG); 1637 if (ACPI_SUCCESS(status)) 1638 return sprintf(buf, "%u\n", result); 1639 return sprintf(buf, "Read error\n"); 1640 } 1641 1642 static ssize_t set_bool_threeg(struct device *dev, 1643 struct device_attribute *attr, const char *buf, size_t count) 1644 { 1645 u32 tmp = simple_strtoul(buf, NULL, 10); 1646 acpi_status status = set_u32(tmp, ACER_CAP_THREEG); 1647 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n", 1648 current->comm); 1649 if (ACPI_FAILURE(status)) 1650 return -EINVAL; 1651 return count; 1652 } 1653 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg, 1654 set_bool_threeg); 1655 1656 static ssize_t show_interface(struct device *dev, struct device_attribute *attr, 1657 char *buf) 1658 { 1659 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n", 1660 current->comm); 1661 switch (interface->type) { 1662 case ACER_AMW0: 1663 return sprintf(buf, "AMW0\n"); 1664 case ACER_AMW0_V2: 1665 return sprintf(buf, "AMW0 v2\n"); 1666 case ACER_WMID: 1667 return sprintf(buf, "WMID\n"); 1668 case ACER_WMID_v2: 1669 return sprintf(buf, "WMID v2\n"); 1670 default: 1671 return sprintf(buf, "Error!\n"); 1672 } 1673 } 1674 1675 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); 1676 1677 static void acer_wmi_notify(u32 value, void *context) 1678 { 1679 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1680 union acpi_object *obj; 1681 struct event_return_value return_value; 1682 acpi_status status; 1683 u16 device_state; 1684 const struct key_entry *key; 1685 u32 scancode; 1686 1687 status = wmi_get_event_data(value, &response); 1688 if (status != AE_OK) { 1689 pr_warn("bad event status 0x%x\n", status); 1690 return; 1691 } 1692 1693 obj = (union acpi_object *)response.pointer; 1694 1695 if (!obj) 1696 return; 1697 if (obj->type != ACPI_TYPE_BUFFER) { 1698 pr_warn("Unknown response received %d\n", obj->type); 1699 kfree(obj); 1700 return; 1701 } 1702 if (obj->buffer.length != 8) { 1703 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1704 kfree(obj); 1705 return; 1706 } 1707 1708 return_value = *((struct event_return_value *)obj->buffer.pointer); 1709 kfree(obj); 1710 1711 switch (return_value.function) { 1712 case WMID_HOTKEY_EVENT: 1713 device_state = return_value.device_state; 1714 pr_debug("device state: 0x%x\n", device_state); 1715 1716 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev, 1717 return_value.key_num); 1718 if (!key) { 1719 pr_warn("Unknown key number - 0x%x\n", 1720 return_value.key_num); 1721 } else { 1722 scancode = return_value.key_num; 1723 switch (key->keycode) { 1724 case KEY_WLAN: 1725 case KEY_BLUETOOTH: 1726 if (has_cap(ACER_CAP_WIRELESS)) 1727 rfkill_set_sw_state(wireless_rfkill, 1728 !(device_state & ACER_WMID3_GDS_WIRELESS)); 1729 if (has_cap(ACER_CAP_THREEG)) 1730 rfkill_set_sw_state(threeg_rfkill, 1731 !(device_state & ACER_WMID3_GDS_THREEG)); 1732 if (has_cap(ACER_CAP_BLUETOOTH)) 1733 rfkill_set_sw_state(bluetooth_rfkill, 1734 !(device_state & ACER_WMID3_GDS_BLUETOOTH)); 1735 break; 1736 case KEY_TOUCHPAD_TOGGLE: 1737 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ? 1738 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF; 1739 } 1740 sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true); 1741 } 1742 break; 1743 case WMID_ACCEL_EVENT: 1744 acer_gsensor_event(); 1745 break; 1746 default: 1747 pr_warn("Unknown function number - %d - %d\n", 1748 return_value.function, return_value.key_num); 1749 break; 1750 } 1751 } 1752 1753 static acpi_status 1754 wmid3_set_lm_mode(struct lm_input_params *params, 1755 struct lm_return_value *return_value) 1756 { 1757 acpi_status status; 1758 union acpi_object *obj; 1759 1760 struct acpi_buffer input = { sizeof(struct lm_input_params), params }; 1761 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1762 1763 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output); 1764 if (ACPI_FAILURE(status)) 1765 return status; 1766 1767 obj = output.pointer; 1768 1769 if (!obj) 1770 return AE_ERROR; 1771 else if (obj->type != ACPI_TYPE_BUFFER) { 1772 kfree(obj); 1773 return AE_ERROR; 1774 } 1775 if (obj->buffer.length != 4) { 1776 pr_warn("Unknown buffer length %d\n", obj->buffer.length); 1777 kfree(obj); 1778 return AE_ERROR; 1779 } 1780 1781 *return_value = *((struct lm_return_value *)obj->buffer.pointer); 1782 kfree(obj); 1783 1784 return status; 1785 } 1786 1787 static int acer_wmi_enable_ec_raw(void) 1788 { 1789 struct lm_return_value return_value; 1790 acpi_status status; 1791 struct lm_input_params params = { 1792 .function_num = 0x1, 1793 .commun_devices = 0xFFFF, 1794 .devices = 0xFFFF, 1795 .lm_status = 0x00, /* Launch Manager Deactive */ 1796 }; 1797 1798 status = wmid3_set_lm_mode(¶ms, &return_value); 1799 1800 if (return_value.error_code || return_value.ec_return_value) 1801 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n", 1802 return_value.error_code, 1803 return_value.ec_return_value); 1804 else 1805 pr_info("Enabled EC raw mode\n"); 1806 1807 return status; 1808 } 1809 1810 static int acer_wmi_enable_lm(void) 1811 { 1812 struct lm_return_value return_value; 1813 acpi_status status; 1814 struct lm_input_params params = { 1815 .function_num = 0x1, 1816 .commun_devices = 0xFFFF, 1817 .devices = 0xFFFF, 1818 .lm_status = 0x01, /* Launch Manager Active */ 1819 }; 1820 1821 status = wmid3_set_lm_mode(¶ms, &return_value); 1822 1823 if (return_value.error_code || return_value.ec_return_value) 1824 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n", 1825 return_value.error_code, 1826 return_value.ec_return_value); 1827 1828 return status; 1829 } 1830 1831 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level, 1832 void *ctx, void **retval) 1833 { 1834 *(acpi_handle *)retval = ah; 1835 return AE_OK; 1836 } 1837 1838 static int __init acer_wmi_get_handle(const char *name, const char *prop, 1839 acpi_handle *ah) 1840 { 1841 acpi_status status; 1842 acpi_handle handle; 1843 1844 BUG_ON(!name || !ah); 1845 1846 handle = NULL; 1847 status = acpi_get_devices(prop, acer_wmi_get_handle_cb, 1848 (void *)name, &handle); 1849 1850 if (ACPI_SUCCESS(status)) { 1851 *ah = handle; 1852 return 0; 1853 } else { 1854 return -ENODEV; 1855 } 1856 } 1857 1858 static int __init acer_wmi_accel_setup(void) 1859 { 1860 int err; 1861 1862 err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle); 1863 if (err) 1864 return err; 1865 1866 interface->capability |= ACER_CAP_ACCEL; 1867 1868 acer_wmi_accel_dev = input_allocate_device(); 1869 if (!acer_wmi_accel_dev) 1870 return -ENOMEM; 1871 1872 acer_wmi_accel_dev->open = acer_gsensor_open; 1873 1874 acer_wmi_accel_dev->name = "Acer BMA150 accelerometer"; 1875 acer_wmi_accel_dev->phys = "wmi/input1"; 1876 acer_wmi_accel_dev->id.bustype = BUS_HOST; 1877 acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS); 1878 input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0); 1879 input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0); 1880 input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0); 1881 1882 err = input_register_device(acer_wmi_accel_dev); 1883 if (err) 1884 goto err_free_dev; 1885 1886 return 0; 1887 1888 err_free_dev: 1889 input_free_device(acer_wmi_accel_dev); 1890 return err; 1891 } 1892 1893 static void acer_wmi_accel_destroy(void) 1894 { 1895 input_unregister_device(acer_wmi_accel_dev); 1896 } 1897 1898 static int __init acer_wmi_input_setup(void) 1899 { 1900 acpi_status status; 1901 int err; 1902 1903 acer_wmi_input_dev = input_allocate_device(); 1904 if (!acer_wmi_input_dev) 1905 return -ENOMEM; 1906 1907 acer_wmi_input_dev->name = "Acer WMI hotkeys"; 1908 acer_wmi_input_dev->phys = "wmi/input0"; 1909 acer_wmi_input_dev->id.bustype = BUS_HOST; 1910 1911 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); 1912 if (err) 1913 goto err_free_dev; 1914 1915 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, 1916 acer_wmi_notify, NULL); 1917 if (ACPI_FAILURE(status)) { 1918 err = -EIO; 1919 goto err_free_keymap; 1920 } 1921 1922 err = input_register_device(acer_wmi_input_dev); 1923 if (err) 1924 goto err_uninstall_notifier; 1925 1926 return 0; 1927 1928 err_uninstall_notifier: 1929 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1930 err_free_keymap: 1931 sparse_keymap_free(acer_wmi_input_dev); 1932 err_free_dev: 1933 input_free_device(acer_wmi_input_dev); 1934 return err; 1935 } 1936 1937 static void acer_wmi_input_destroy(void) 1938 { 1939 wmi_remove_notify_handler(ACERWMID_EVENT_GUID); 1940 sparse_keymap_free(acer_wmi_input_dev); 1941 input_unregister_device(acer_wmi_input_dev); 1942 } 1943 1944 /* 1945 * debugfs functions 1946 */ 1947 static u32 get_wmid_devices(void) 1948 { 1949 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; 1950 union acpi_object *obj; 1951 acpi_status status; 1952 u32 devices = 0; 1953 1954 status = wmi_query_block(WMID_GUID2, 1, &out); 1955 if (ACPI_FAILURE(status)) 1956 return 0; 1957 1958 obj = (union acpi_object *) out.pointer; 1959 if (obj) { 1960 if (obj->type == ACPI_TYPE_BUFFER && 1961 (obj->buffer.length == sizeof(u32) || 1962 obj->buffer.length == sizeof(u64))) { 1963 devices = *((u32 *) obj->buffer.pointer); 1964 } else if (obj->type == ACPI_TYPE_INTEGER) { 1965 devices = (u32) obj->integer.value; 1966 } 1967 } 1968 1969 kfree(out.pointer); 1970 return devices; 1971 } 1972 1973 /* 1974 * Platform device 1975 */ 1976 static int acer_platform_probe(struct platform_device *device) 1977 { 1978 int err; 1979 1980 if (has_cap(ACER_CAP_MAILLED)) { 1981 err = acer_led_init(&device->dev); 1982 if (err) 1983 goto error_mailled; 1984 } 1985 1986 if (has_cap(ACER_CAP_BRIGHTNESS)) { 1987 err = acer_backlight_init(&device->dev); 1988 if (err) 1989 goto error_brightness; 1990 } 1991 1992 err = acer_rfkill_init(&device->dev); 1993 if (err) 1994 goto error_rfkill; 1995 1996 return err; 1997 1998 error_rfkill: 1999 if (has_cap(ACER_CAP_BRIGHTNESS)) 2000 acer_backlight_exit(); 2001 error_brightness: 2002 if (has_cap(ACER_CAP_MAILLED)) 2003 acer_led_exit(); 2004 error_mailled: 2005 return err; 2006 } 2007 2008 static int acer_platform_remove(struct platform_device *device) 2009 { 2010 if (has_cap(ACER_CAP_MAILLED)) 2011 acer_led_exit(); 2012 if (has_cap(ACER_CAP_BRIGHTNESS)) 2013 acer_backlight_exit(); 2014 2015 acer_rfkill_exit(); 2016 return 0; 2017 } 2018 2019 static int acer_suspend(struct device *dev) 2020 { 2021 u32 value; 2022 struct acer_data *data = &interface->data; 2023 2024 if (!data) 2025 return -ENOMEM; 2026 2027 if (has_cap(ACER_CAP_MAILLED)) { 2028 get_u32(&value, ACER_CAP_MAILLED); 2029 set_u32(LED_OFF, ACER_CAP_MAILLED); 2030 data->mailled = value; 2031 } 2032 2033 if (has_cap(ACER_CAP_BRIGHTNESS)) { 2034 get_u32(&value, ACER_CAP_BRIGHTNESS); 2035 data->brightness = value; 2036 } 2037 2038 return 0; 2039 } 2040 2041 static int acer_resume(struct device *dev) 2042 { 2043 struct acer_data *data = &interface->data; 2044 2045 if (!data) 2046 return -ENOMEM; 2047 2048 if (has_cap(ACER_CAP_MAILLED)) 2049 set_u32(data->mailled, ACER_CAP_MAILLED); 2050 2051 if (has_cap(ACER_CAP_BRIGHTNESS)) 2052 set_u32(data->brightness, ACER_CAP_BRIGHTNESS); 2053 2054 if (has_cap(ACER_CAP_ACCEL)) 2055 acer_gsensor_init(); 2056 2057 return 0; 2058 } 2059 2060 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume); 2061 2062 static void acer_platform_shutdown(struct platform_device *device) 2063 { 2064 struct acer_data *data = &interface->data; 2065 2066 if (!data) 2067 return; 2068 2069 if (has_cap(ACER_CAP_MAILLED)) 2070 set_u32(LED_OFF, ACER_CAP_MAILLED); 2071 } 2072 2073 static struct platform_driver acer_platform_driver = { 2074 .driver = { 2075 .name = "acer-wmi", 2076 .owner = THIS_MODULE, 2077 .pm = &acer_pm, 2078 }, 2079 .probe = acer_platform_probe, 2080 .remove = acer_platform_remove, 2081 .shutdown = acer_platform_shutdown, 2082 }; 2083 2084 static struct platform_device *acer_platform_device; 2085 2086 static int remove_sysfs(struct platform_device *device) 2087 { 2088 if (has_cap(ACER_CAP_THREEG)) 2089 device_remove_file(&device->dev, &dev_attr_threeg); 2090 2091 device_remove_file(&device->dev, &dev_attr_interface); 2092 2093 return 0; 2094 } 2095 2096 static int create_sysfs(void) 2097 { 2098 int retval = -ENOMEM; 2099 2100 if (has_cap(ACER_CAP_THREEG)) { 2101 retval = device_create_file(&acer_platform_device->dev, 2102 &dev_attr_threeg); 2103 if (retval) 2104 goto error_sysfs; 2105 } 2106 2107 retval = device_create_file(&acer_platform_device->dev, 2108 &dev_attr_interface); 2109 if (retval) 2110 goto error_sysfs; 2111 2112 return 0; 2113 2114 error_sysfs: 2115 remove_sysfs(acer_platform_device); 2116 return retval; 2117 } 2118 2119 static void remove_debugfs(void) 2120 { 2121 debugfs_remove(interface->debug.devices); 2122 debugfs_remove(interface->debug.root); 2123 } 2124 2125 static int create_debugfs(void) 2126 { 2127 interface->debug.root = debugfs_create_dir("acer-wmi", NULL); 2128 if (!interface->debug.root) { 2129 pr_err("Failed to create debugfs directory"); 2130 return -ENOMEM; 2131 } 2132 2133 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, 2134 interface->debug.root, 2135 &interface->debug.wmid_devices); 2136 if (!interface->debug.devices) 2137 goto error_debugfs; 2138 2139 return 0; 2140 2141 error_debugfs: 2142 remove_debugfs(); 2143 return -ENOMEM; 2144 } 2145 2146 static int __init acer_wmi_init(void) 2147 { 2148 int err; 2149 2150 pr_info("Acer Laptop ACPI-WMI Extras\n"); 2151 2152 if (dmi_check_system(acer_blacklist)) { 2153 pr_info("Blacklisted hardware detected - not loading\n"); 2154 return -ENODEV; 2155 } 2156 2157 find_quirks(); 2158 2159 /* 2160 * Detect which ACPI-WMI interface we're using. 2161 */ 2162 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 2163 interface = &AMW0_V2_interface; 2164 2165 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) 2166 interface = &wmid_interface; 2167 2168 if (wmi_has_guid(WMID_GUID3)) 2169 interface = &wmid_v2_interface; 2170 2171 if (interface) 2172 dmi_walk(type_aa_dmi_decode, NULL); 2173 2174 if (wmi_has_guid(WMID_GUID2) && interface) { 2175 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) { 2176 pr_err("Unable to detect available WMID devices\n"); 2177 return -ENODEV; 2178 } 2179 /* WMID always provides brightness methods */ 2180 interface->capability |= ACER_CAP_BRIGHTNESS; 2181 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) { 2182 pr_err("No WMID device detection method found\n"); 2183 return -ENODEV; 2184 } 2185 2186 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { 2187 interface = &AMW0_interface; 2188 2189 if (ACPI_FAILURE(AMW0_set_capabilities())) { 2190 pr_err("Unable to detect available AMW0 devices\n"); 2191 return -ENODEV; 2192 } 2193 } 2194 2195 if (wmi_has_guid(AMW0_GUID1)) 2196 AMW0_find_mailled(); 2197 2198 if (!interface) { 2199 pr_err("No or unsupported WMI interface, unable to load\n"); 2200 return -ENODEV; 2201 } 2202 2203 set_quirks(); 2204 2205 if (dmi_check_system(video_vendor_dmi_table)) 2206 acpi_video_dmi_promote_vendor(); 2207 if (acpi_video_backlight_support()) { 2208 interface->capability &= ~ACER_CAP_BRIGHTNESS; 2209 pr_info("Brightness must be controlled by acpi video driver\n"); 2210 } else { 2211 pr_info("Disabling ACPI video driver\n"); 2212 acpi_video_unregister(); 2213 } 2214 2215 if (wmi_has_guid(WMID_GUID3)) { 2216 if (ec_raw_mode) { 2217 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) { 2218 pr_err("Cannot enable EC raw mode\n"); 2219 return -ENODEV; 2220 } 2221 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) { 2222 pr_err("Cannot enable Launch Manager mode\n"); 2223 return -ENODEV; 2224 } 2225 } else if (ec_raw_mode) { 2226 pr_info("No WMID EC raw mode enable method\n"); 2227 } 2228 2229 if (wmi_has_guid(ACERWMID_EVENT_GUID)) { 2230 err = acer_wmi_input_setup(); 2231 if (err) 2232 return err; 2233 } 2234 2235 acer_wmi_accel_setup(); 2236 2237 err = platform_driver_register(&acer_platform_driver); 2238 if (err) { 2239 pr_err("Unable to register platform driver\n"); 2240 goto error_platform_register; 2241 } 2242 2243 acer_platform_device = platform_device_alloc("acer-wmi", -1); 2244 if (!acer_platform_device) { 2245 err = -ENOMEM; 2246 goto error_device_alloc; 2247 } 2248 2249 err = platform_device_add(acer_platform_device); 2250 if (err) 2251 goto error_device_add; 2252 2253 err = create_sysfs(); 2254 if (err) 2255 goto error_create_sys; 2256 2257 if (wmi_has_guid(WMID_GUID2)) { 2258 interface->debug.wmid_devices = get_wmid_devices(); 2259 err = create_debugfs(); 2260 if (err) 2261 goto error_create_debugfs; 2262 } 2263 2264 /* Override any initial settings with values from the commandline */ 2265 acer_commandline_init(); 2266 2267 return 0; 2268 2269 error_create_debugfs: 2270 remove_sysfs(acer_platform_device); 2271 error_create_sys: 2272 platform_device_del(acer_platform_device); 2273 error_device_add: 2274 platform_device_put(acer_platform_device); 2275 error_device_alloc: 2276 platform_driver_unregister(&acer_platform_driver); 2277 error_platform_register: 2278 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2279 acer_wmi_input_destroy(); 2280 if (has_cap(ACER_CAP_ACCEL)) 2281 acer_wmi_accel_destroy(); 2282 2283 return err; 2284 } 2285 2286 static void __exit acer_wmi_exit(void) 2287 { 2288 if (wmi_has_guid(ACERWMID_EVENT_GUID)) 2289 acer_wmi_input_destroy(); 2290 2291 if (has_cap(ACER_CAP_ACCEL)) 2292 acer_wmi_accel_destroy(); 2293 2294 remove_sysfs(acer_platform_device); 2295 remove_debugfs(); 2296 platform_device_unregister(acer_platform_device); 2297 platform_driver_unregister(&acer_platform_driver); 2298 2299 pr_info("Acer Laptop WMI Extras unloaded\n"); 2300 return; 2301 } 2302 2303 module_init(acer_wmi_init); 2304 module_exit(acer_wmi_exit); 2305