1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Alienware AlienFX control 4 * 5 * Copyright (C) 2014 Dell Inc <Dell.Client.Kernel@dell.com> 6 */ 7 8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 9 10 #include <linux/acpi.h> 11 #include <linux/module.h> 12 #include <linux/platform_device.h> 13 #include <linux/dmi.h> 14 #include <linux/leds.h> 15 16 #define LEGACY_CONTROL_GUID "A90597CE-A997-11DA-B012-B622A1EF5492" 17 #define LEGACY_POWER_CONTROL_GUID "A80593CE-A997-11DA-B012-B622A1EF5492" 18 #define WMAX_CONTROL_GUID "A70591CE-A997-11DA-B012-B622A1EF5492" 19 20 #define WMAX_METHOD_HDMI_SOURCE 0x1 21 #define WMAX_METHOD_HDMI_STATUS 0x2 22 #define WMAX_METHOD_BRIGHTNESS 0x3 23 #define WMAX_METHOD_ZONE_CONTROL 0x4 24 #define WMAX_METHOD_HDMI_CABLE 0x5 25 #define WMAX_METHOD_AMPLIFIER_CABLE 0x6 26 #define WMAX_METHOD_DEEP_SLEEP_CONTROL 0x0B 27 #define WMAX_METHOD_DEEP_SLEEP_STATUS 0x0C 28 29 MODULE_AUTHOR("Mario Limonciello <mario.limonciello@outlook.com>"); 30 MODULE_DESCRIPTION("Alienware special feature control"); 31 MODULE_LICENSE("GPL"); 32 MODULE_ALIAS("wmi:" LEGACY_CONTROL_GUID); 33 MODULE_ALIAS("wmi:" WMAX_CONTROL_GUID); 34 35 enum INTERFACE_FLAGS { 36 LEGACY, 37 WMAX, 38 }; 39 40 enum LEGACY_CONTROL_STATES { 41 LEGACY_RUNNING = 1, 42 LEGACY_BOOTING = 0, 43 LEGACY_SUSPEND = 3, 44 }; 45 46 enum WMAX_CONTROL_STATES { 47 WMAX_RUNNING = 0xFF, 48 WMAX_BOOTING = 0, 49 WMAX_SUSPEND = 3, 50 }; 51 52 struct quirk_entry { 53 u8 num_zones; 54 u8 hdmi_mux; 55 u8 amplifier; 56 u8 deepslp; 57 }; 58 59 static struct quirk_entry *quirks; 60 61 62 static struct quirk_entry quirk_inspiron5675 = { 63 .num_zones = 2, 64 .hdmi_mux = 0, 65 .amplifier = 0, 66 .deepslp = 0, 67 }; 68 69 static struct quirk_entry quirk_unknown = { 70 .num_zones = 2, 71 .hdmi_mux = 0, 72 .amplifier = 0, 73 .deepslp = 0, 74 }; 75 76 static struct quirk_entry quirk_x51_r1_r2 = { 77 .num_zones = 3, 78 .hdmi_mux = 0, 79 .amplifier = 0, 80 .deepslp = 0, 81 }; 82 83 static struct quirk_entry quirk_x51_r3 = { 84 .num_zones = 4, 85 .hdmi_mux = 0, 86 .amplifier = 1, 87 .deepslp = 0, 88 }; 89 90 static struct quirk_entry quirk_asm100 = { 91 .num_zones = 2, 92 .hdmi_mux = 1, 93 .amplifier = 0, 94 .deepslp = 0, 95 }; 96 97 static struct quirk_entry quirk_asm200 = { 98 .num_zones = 2, 99 .hdmi_mux = 1, 100 .amplifier = 0, 101 .deepslp = 1, 102 }; 103 104 static struct quirk_entry quirk_asm201 = { 105 .num_zones = 2, 106 .hdmi_mux = 1, 107 .amplifier = 1, 108 .deepslp = 1, 109 }; 110 111 static int __init dmi_matched(const struct dmi_system_id *dmi) 112 { 113 quirks = dmi->driver_data; 114 return 1; 115 } 116 117 static const struct dmi_system_id alienware_quirks[] __initconst = { 118 { 119 .callback = dmi_matched, 120 .ident = "Alienware X51 R3", 121 .matches = { 122 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 123 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R3"), 124 }, 125 .driver_data = &quirk_x51_r3, 126 }, 127 { 128 .callback = dmi_matched, 129 .ident = "Alienware X51 R2", 130 .matches = { 131 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 132 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R2"), 133 }, 134 .driver_data = &quirk_x51_r1_r2, 135 }, 136 { 137 .callback = dmi_matched, 138 .ident = "Alienware X51 R1", 139 .matches = { 140 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 141 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51"), 142 }, 143 .driver_data = &quirk_x51_r1_r2, 144 }, 145 { 146 .callback = dmi_matched, 147 .ident = "Alienware ASM100", 148 .matches = { 149 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 150 DMI_MATCH(DMI_PRODUCT_NAME, "ASM100"), 151 }, 152 .driver_data = &quirk_asm100, 153 }, 154 { 155 .callback = dmi_matched, 156 .ident = "Alienware ASM200", 157 .matches = { 158 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 159 DMI_MATCH(DMI_PRODUCT_NAME, "ASM200"), 160 }, 161 .driver_data = &quirk_asm200, 162 }, 163 { 164 .callback = dmi_matched, 165 .ident = "Alienware ASM201", 166 .matches = { 167 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 168 DMI_MATCH(DMI_PRODUCT_NAME, "ASM201"), 169 }, 170 .driver_data = &quirk_asm201, 171 }, 172 { 173 .callback = dmi_matched, 174 .ident = "Dell Inc. Inspiron 5675", 175 .matches = { 176 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 177 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5675"), 178 }, 179 .driver_data = &quirk_inspiron5675, 180 }, 181 {} 182 }; 183 184 struct color_platform { 185 u8 blue; 186 u8 green; 187 u8 red; 188 } __packed; 189 190 struct platform_zone { 191 u8 location; 192 struct device_attribute *attr; 193 struct color_platform colors; 194 }; 195 196 struct wmax_brightness_args { 197 u32 led_mask; 198 u32 percentage; 199 }; 200 201 struct wmax_basic_args { 202 u8 arg; 203 }; 204 205 struct legacy_led_args { 206 struct color_platform colors; 207 u8 brightness; 208 u8 state; 209 } __packed; 210 211 struct wmax_led_args { 212 u32 led_mask; 213 struct color_platform colors; 214 u8 state; 215 } __packed; 216 217 static struct platform_device *platform_device; 218 static struct device_attribute *zone_dev_attrs; 219 static struct attribute **zone_attrs; 220 static struct platform_zone *zone_data; 221 222 static struct platform_driver platform_driver = { 223 .driver = { 224 .name = "alienware-wmi", 225 } 226 }; 227 228 static struct attribute_group zone_attribute_group = { 229 .name = "rgb_zones", 230 }; 231 232 static u8 interface; 233 static u8 lighting_control_state; 234 static u8 global_brightness; 235 236 /* 237 * Helpers used for zone control 238 */ 239 static int parse_rgb(const char *buf, struct platform_zone *zone) 240 { 241 long unsigned int rgb; 242 int ret; 243 union color_union { 244 struct color_platform cp; 245 int package; 246 } repackager; 247 248 ret = kstrtoul(buf, 16, &rgb); 249 if (ret) 250 return ret; 251 252 /* RGB triplet notation is 24-bit hexadecimal */ 253 if (rgb > 0xFFFFFF) 254 return -EINVAL; 255 256 repackager.package = rgb & 0x0f0f0f0f; 257 pr_debug("alienware-wmi: r: %d g:%d b: %d\n", 258 repackager.cp.red, repackager.cp.green, repackager.cp.blue); 259 zone->colors = repackager.cp; 260 return 0; 261 } 262 263 static struct platform_zone *match_zone(struct device_attribute *attr) 264 { 265 u8 zone; 266 267 for (zone = 0; zone < quirks->num_zones; zone++) { 268 if ((struct device_attribute *)zone_data[zone].attr == attr) { 269 pr_debug("alienware-wmi: matched zone location: %d\n", 270 zone_data[zone].location); 271 return &zone_data[zone]; 272 } 273 } 274 return NULL; 275 } 276 277 /* 278 * Individual RGB zone control 279 */ 280 static int alienware_update_led(struct platform_zone *zone) 281 { 282 int method_id; 283 acpi_status status; 284 char *guid; 285 struct acpi_buffer input; 286 struct legacy_led_args legacy_args; 287 struct wmax_led_args wmax_basic_args; 288 if (interface == WMAX) { 289 wmax_basic_args.led_mask = 1 << zone->location; 290 wmax_basic_args.colors = zone->colors; 291 wmax_basic_args.state = lighting_control_state; 292 guid = WMAX_CONTROL_GUID; 293 method_id = WMAX_METHOD_ZONE_CONTROL; 294 295 input.length = (acpi_size) sizeof(wmax_basic_args); 296 input.pointer = &wmax_basic_args; 297 } else { 298 legacy_args.colors = zone->colors; 299 legacy_args.brightness = global_brightness; 300 legacy_args.state = 0; 301 if (lighting_control_state == LEGACY_BOOTING || 302 lighting_control_state == LEGACY_SUSPEND) { 303 guid = LEGACY_POWER_CONTROL_GUID; 304 legacy_args.state = lighting_control_state; 305 } else 306 guid = LEGACY_CONTROL_GUID; 307 method_id = zone->location + 1; 308 309 input.length = (acpi_size) sizeof(legacy_args); 310 input.pointer = &legacy_args; 311 } 312 pr_debug("alienware-wmi: guid %s method %d\n", guid, method_id); 313 314 status = wmi_evaluate_method(guid, 0, method_id, &input, NULL); 315 if (ACPI_FAILURE(status)) 316 pr_err("alienware-wmi: zone set failure: %u\n", status); 317 return ACPI_FAILURE(status); 318 } 319 320 static ssize_t zone_show(struct device *dev, struct device_attribute *attr, 321 char *buf) 322 { 323 struct platform_zone *target_zone; 324 target_zone = match_zone(attr); 325 if (target_zone == NULL) 326 return sprintf(buf, "red: -1, green: -1, blue: -1\n"); 327 return sprintf(buf, "red: %d, green: %d, blue: %d\n", 328 target_zone->colors.red, 329 target_zone->colors.green, target_zone->colors.blue); 330 331 } 332 333 static ssize_t zone_set(struct device *dev, struct device_attribute *attr, 334 const char *buf, size_t count) 335 { 336 struct platform_zone *target_zone; 337 int ret; 338 target_zone = match_zone(attr); 339 if (target_zone == NULL) { 340 pr_err("alienware-wmi: invalid target zone\n"); 341 return 1; 342 } 343 ret = parse_rgb(buf, target_zone); 344 if (ret) 345 return ret; 346 ret = alienware_update_led(target_zone); 347 return ret ? ret : count; 348 } 349 350 /* 351 * LED Brightness (Global) 352 */ 353 static int wmax_brightness(int brightness) 354 { 355 acpi_status status; 356 struct acpi_buffer input; 357 struct wmax_brightness_args args = { 358 .led_mask = 0xFF, 359 .percentage = brightness, 360 }; 361 input.length = (acpi_size) sizeof(args); 362 input.pointer = &args; 363 status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0, 364 WMAX_METHOD_BRIGHTNESS, &input, NULL); 365 if (ACPI_FAILURE(status)) 366 pr_err("alienware-wmi: brightness set failure: %u\n", status); 367 return ACPI_FAILURE(status); 368 } 369 370 static void global_led_set(struct led_classdev *led_cdev, 371 enum led_brightness brightness) 372 { 373 int ret; 374 global_brightness = brightness; 375 if (interface == WMAX) 376 ret = wmax_brightness(brightness); 377 else 378 ret = alienware_update_led(&zone_data[0]); 379 if (ret) 380 pr_err("LED brightness update failed\n"); 381 } 382 383 static enum led_brightness global_led_get(struct led_classdev *led_cdev) 384 { 385 return global_brightness; 386 } 387 388 static struct led_classdev global_led = { 389 .brightness_set = global_led_set, 390 .brightness_get = global_led_get, 391 .name = "alienware::global_brightness", 392 }; 393 394 /* 395 * Lighting control state device attribute (Global) 396 */ 397 static ssize_t show_control_state(struct device *dev, 398 struct device_attribute *attr, char *buf) 399 { 400 if (lighting_control_state == LEGACY_BOOTING) 401 return scnprintf(buf, PAGE_SIZE, "[booting] running suspend\n"); 402 else if (lighting_control_state == LEGACY_SUSPEND) 403 return scnprintf(buf, PAGE_SIZE, "booting running [suspend]\n"); 404 return scnprintf(buf, PAGE_SIZE, "booting [running] suspend\n"); 405 } 406 407 static ssize_t store_control_state(struct device *dev, 408 struct device_attribute *attr, 409 const char *buf, size_t count) 410 { 411 long unsigned int val; 412 if (strcmp(buf, "booting\n") == 0) 413 val = LEGACY_BOOTING; 414 else if (strcmp(buf, "suspend\n") == 0) 415 val = LEGACY_SUSPEND; 416 else if (interface == LEGACY) 417 val = LEGACY_RUNNING; 418 else 419 val = WMAX_RUNNING; 420 lighting_control_state = val; 421 pr_debug("alienware-wmi: updated control state to %d\n", 422 lighting_control_state); 423 return count; 424 } 425 426 static DEVICE_ATTR(lighting_control_state, 0644, show_control_state, 427 store_control_state); 428 429 static int alienware_zone_init(struct platform_device *dev) 430 { 431 u8 zone; 432 char buffer[10]; 433 char *name; 434 435 if (interface == WMAX) { 436 lighting_control_state = WMAX_RUNNING; 437 } else if (interface == LEGACY) { 438 lighting_control_state = LEGACY_RUNNING; 439 } 440 global_led.max_brightness = 0x0F; 441 global_brightness = global_led.max_brightness; 442 443 /* 444 * - zone_dev_attrs num_zones + 1 is for individual zones and then 445 * null terminated 446 * - zone_attrs num_zones + 2 is for all attrs in zone_dev_attrs + 447 * the lighting control + null terminated 448 * - zone_data num_zones is for the distinct zones 449 */ 450 zone_dev_attrs = 451 kcalloc(quirks->num_zones + 1, sizeof(struct device_attribute), 452 GFP_KERNEL); 453 if (!zone_dev_attrs) 454 return -ENOMEM; 455 456 zone_attrs = 457 kcalloc(quirks->num_zones + 2, sizeof(struct attribute *), 458 GFP_KERNEL); 459 if (!zone_attrs) 460 return -ENOMEM; 461 462 zone_data = 463 kcalloc(quirks->num_zones, sizeof(struct platform_zone), 464 GFP_KERNEL); 465 if (!zone_data) 466 return -ENOMEM; 467 468 for (zone = 0; zone < quirks->num_zones; zone++) { 469 sprintf(buffer, "zone%02hhX", zone); 470 name = kstrdup(buffer, GFP_KERNEL); 471 if (name == NULL) 472 return 1; 473 sysfs_attr_init(&zone_dev_attrs[zone].attr); 474 zone_dev_attrs[zone].attr.name = name; 475 zone_dev_attrs[zone].attr.mode = 0644; 476 zone_dev_attrs[zone].show = zone_show; 477 zone_dev_attrs[zone].store = zone_set; 478 zone_data[zone].location = zone; 479 zone_attrs[zone] = &zone_dev_attrs[zone].attr; 480 zone_data[zone].attr = &zone_dev_attrs[zone]; 481 } 482 zone_attrs[quirks->num_zones] = &dev_attr_lighting_control_state.attr; 483 zone_attribute_group.attrs = zone_attrs; 484 485 led_classdev_register(&dev->dev, &global_led); 486 487 return sysfs_create_group(&dev->dev.kobj, &zone_attribute_group); 488 } 489 490 static void alienware_zone_exit(struct platform_device *dev) 491 { 492 u8 zone; 493 494 sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group); 495 led_classdev_unregister(&global_led); 496 if (zone_dev_attrs) { 497 for (zone = 0; zone < quirks->num_zones; zone++) 498 kfree(zone_dev_attrs[zone].attr.name); 499 } 500 kfree(zone_dev_attrs); 501 kfree(zone_data); 502 kfree(zone_attrs); 503 } 504 505 static acpi_status alienware_wmax_command(struct wmax_basic_args *in_args, 506 u32 command, int *out_data) 507 { 508 acpi_status status; 509 union acpi_object *obj; 510 struct acpi_buffer input; 511 struct acpi_buffer output; 512 513 input.length = (acpi_size) sizeof(*in_args); 514 input.pointer = in_args; 515 if (out_data) { 516 output.length = ACPI_ALLOCATE_BUFFER; 517 output.pointer = NULL; 518 status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0, 519 command, &input, &output); 520 if (ACPI_SUCCESS(status)) { 521 obj = (union acpi_object *)output.pointer; 522 if (obj && obj->type == ACPI_TYPE_INTEGER) 523 *out_data = (u32)obj->integer.value; 524 } 525 kfree(output.pointer); 526 } else { 527 status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0, 528 command, &input, NULL); 529 } 530 return status; 531 } 532 533 /* 534 * The HDMI mux sysfs node indicates the status of the HDMI input mux. 535 * It can toggle between standard system GPU output and HDMI input. 536 */ 537 static ssize_t show_hdmi_cable(struct device *dev, 538 struct device_attribute *attr, char *buf) 539 { 540 acpi_status status; 541 u32 out_data; 542 struct wmax_basic_args in_args = { 543 .arg = 0, 544 }; 545 status = 546 alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_CABLE, 547 (u32 *) &out_data); 548 if (ACPI_SUCCESS(status)) { 549 if (out_data == 0) 550 return scnprintf(buf, PAGE_SIZE, 551 "[unconnected] connected unknown\n"); 552 else if (out_data == 1) 553 return scnprintf(buf, PAGE_SIZE, 554 "unconnected [connected] unknown\n"); 555 } 556 pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status); 557 return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n"); 558 } 559 560 static ssize_t show_hdmi_source(struct device *dev, 561 struct device_attribute *attr, char *buf) 562 { 563 acpi_status status; 564 u32 out_data; 565 struct wmax_basic_args in_args = { 566 .arg = 0, 567 }; 568 status = 569 alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_STATUS, 570 (u32 *) &out_data); 571 572 if (ACPI_SUCCESS(status)) { 573 if (out_data == 1) 574 return scnprintf(buf, PAGE_SIZE, 575 "[input] gpu unknown\n"); 576 else if (out_data == 2) 577 return scnprintf(buf, PAGE_SIZE, 578 "input [gpu] unknown\n"); 579 } 580 pr_err("alienware-wmi: unknown HDMI source status: %u\n", status); 581 return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n"); 582 } 583 584 static ssize_t toggle_hdmi_source(struct device *dev, 585 struct device_attribute *attr, 586 const char *buf, size_t count) 587 { 588 acpi_status status; 589 struct wmax_basic_args args; 590 if (strcmp(buf, "gpu\n") == 0) 591 args.arg = 1; 592 else if (strcmp(buf, "input\n") == 0) 593 args.arg = 2; 594 else 595 args.arg = 3; 596 pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf); 597 598 status = alienware_wmax_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL); 599 600 if (ACPI_FAILURE(status)) 601 pr_err("alienware-wmi: HDMI toggle failed: results: %u\n", 602 status); 603 return count; 604 } 605 606 static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL); 607 static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source, 608 toggle_hdmi_source); 609 610 static struct attribute *hdmi_attrs[] = { 611 &dev_attr_cable.attr, 612 &dev_attr_source.attr, 613 NULL, 614 }; 615 616 static const struct attribute_group hdmi_attribute_group = { 617 .name = "hdmi", 618 .attrs = hdmi_attrs, 619 }; 620 621 static void remove_hdmi(struct platform_device *dev) 622 { 623 if (quirks->hdmi_mux > 0) 624 sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group); 625 } 626 627 static int create_hdmi(struct platform_device *dev) 628 { 629 int ret; 630 631 ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group); 632 if (ret) 633 remove_hdmi(dev); 634 return ret; 635 } 636 637 /* 638 * Alienware GFX amplifier support 639 * - Currently supports reading cable status 640 * - Leaving expansion room to possibly support dock/undock events later 641 */ 642 static ssize_t show_amplifier_status(struct device *dev, 643 struct device_attribute *attr, char *buf) 644 { 645 acpi_status status; 646 u32 out_data; 647 struct wmax_basic_args in_args = { 648 .arg = 0, 649 }; 650 status = 651 alienware_wmax_command(&in_args, WMAX_METHOD_AMPLIFIER_CABLE, 652 (u32 *) &out_data); 653 if (ACPI_SUCCESS(status)) { 654 if (out_data == 0) 655 return scnprintf(buf, PAGE_SIZE, 656 "[unconnected] connected unknown\n"); 657 else if (out_data == 1) 658 return scnprintf(buf, PAGE_SIZE, 659 "unconnected [connected] unknown\n"); 660 } 661 pr_err("alienware-wmi: unknown amplifier cable status: %d\n", status); 662 return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n"); 663 } 664 665 static DEVICE_ATTR(status, S_IRUGO, show_amplifier_status, NULL); 666 667 static struct attribute *amplifier_attrs[] = { 668 &dev_attr_status.attr, 669 NULL, 670 }; 671 672 static const struct attribute_group amplifier_attribute_group = { 673 .name = "amplifier", 674 .attrs = amplifier_attrs, 675 }; 676 677 static void remove_amplifier(struct platform_device *dev) 678 { 679 if (quirks->amplifier > 0) 680 sysfs_remove_group(&dev->dev.kobj, &lifier_attribute_group); 681 } 682 683 static int create_amplifier(struct platform_device *dev) 684 { 685 int ret; 686 687 ret = sysfs_create_group(&dev->dev.kobj, &lifier_attribute_group); 688 if (ret) 689 remove_amplifier(dev); 690 return ret; 691 } 692 693 /* 694 * Deep Sleep Control support 695 * - Modifies BIOS setting for deep sleep control allowing extra wakeup events 696 */ 697 static ssize_t show_deepsleep_status(struct device *dev, 698 struct device_attribute *attr, char *buf) 699 { 700 acpi_status status; 701 u32 out_data; 702 struct wmax_basic_args in_args = { 703 .arg = 0, 704 }; 705 status = alienware_wmax_command(&in_args, WMAX_METHOD_DEEP_SLEEP_STATUS, 706 (u32 *) &out_data); 707 if (ACPI_SUCCESS(status)) { 708 if (out_data == 0) 709 return scnprintf(buf, PAGE_SIZE, 710 "[disabled] s5 s5_s4\n"); 711 else if (out_data == 1) 712 return scnprintf(buf, PAGE_SIZE, 713 "disabled [s5] s5_s4\n"); 714 else if (out_data == 2) 715 return scnprintf(buf, PAGE_SIZE, 716 "disabled s5 [s5_s4]\n"); 717 } 718 pr_err("alienware-wmi: unknown deep sleep status: %d\n", status); 719 return scnprintf(buf, PAGE_SIZE, "disabled s5 s5_s4 [unknown]\n"); 720 } 721 722 static ssize_t toggle_deepsleep(struct device *dev, 723 struct device_attribute *attr, 724 const char *buf, size_t count) 725 { 726 acpi_status status; 727 struct wmax_basic_args args; 728 729 if (strcmp(buf, "disabled\n") == 0) 730 args.arg = 0; 731 else if (strcmp(buf, "s5\n") == 0) 732 args.arg = 1; 733 else 734 args.arg = 2; 735 pr_debug("alienware-wmi: setting deep sleep to %d : %s", args.arg, buf); 736 737 status = alienware_wmax_command(&args, WMAX_METHOD_DEEP_SLEEP_CONTROL, 738 NULL); 739 740 if (ACPI_FAILURE(status)) 741 pr_err("alienware-wmi: deep sleep control failed: results: %u\n", 742 status); 743 return count; 744 } 745 746 static DEVICE_ATTR(deepsleep, S_IRUGO | S_IWUSR, show_deepsleep_status, toggle_deepsleep); 747 748 static struct attribute *deepsleep_attrs[] = { 749 &dev_attr_deepsleep.attr, 750 NULL, 751 }; 752 753 static const struct attribute_group deepsleep_attribute_group = { 754 .name = "deepsleep", 755 .attrs = deepsleep_attrs, 756 }; 757 758 static void remove_deepsleep(struct platform_device *dev) 759 { 760 if (quirks->deepslp > 0) 761 sysfs_remove_group(&dev->dev.kobj, &deepsleep_attribute_group); 762 } 763 764 static int create_deepsleep(struct platform_device *dev) 765 { 766 int ret; 767 768 ret = sysfs_create_group(&dev->dev.kobj, &deepsleep_attribute_group); 769 if (ret) 770 remove_deepsleep(dev); 771 return ret; 772 } 773 774 static int __init alienware_wmi_init(void) 775 { 776 int ret; 777 778 if (wmi_has_guid(LEGACY_CONTROL_GUID)) 779 interface = LEGACY; 780 else if (wmi_has_guid(WMAX_CONTROL_GUID)) 781 interface = WMAX; 782 else { 783 pr_warn("alienware-wmi: No known WMI GUID found\n"); 784 return -ENODEV; 785 } 786 787 dmi_check_system(alienware_quirks); 788 if (quirks == NULL) 789 quirks = &quirk_unknown; 790 791 ret = platform_driver_register(&platform_driver); 792 if (ret) 793 goto fail_platform_driver; 794 platform_device = platform_device_alloc("alienware-wmi", PLATFORM_DEVID_NONE); 795 if (!platform_device) { 796 ret = -ENOMEM; 797 goto fail_platform_device1; 798 } 799 ret = platform_device_add(platform_device); 800 if (ret) 801 goto fail_platform_device2; 802 803 if (quirks->hdmi_mux > 0) { 804 ret = create_hdmi(platform_device); 805 if (ret) 806 goto fail_prep_hdmi; 807 } 808 809 if (quirks->amplifier > 0) { 810 ret = create_amplifier(platform_device); 811 if (ret) 812 goto fail_prep_amplifier; 813 } 814 815 if (quirks->deepslp > 0) { 816 ret = create_deepsleep(platform_device); 817 if (ret) 818 goto fail_prep_deepsleep; 819 } 820 821 ret = alienware_zone_init(platform_device); 822 if (ret) 823 goto fail_prep_zones; 824 825 return 0; 826 827 fail_prep_zones: 828 alienware_zone_exit(platform_device); 829 fail_prep_deepsleep: 830 fail_prep_amplifier: 831 fail_prep_hdmi: 832 platform_device_del(platform_device); 833 fail_platform_device2: 834 platform_device_put(platform_device); 835 fail_platform_device1: 836 platform_driver_unregister(&platform_driver); 837 fail_platform_driver: 838 return ret; 839 } 840 841 module_init(alienware_wmi_init); 842 843 static void __exit alienware_wmi_exit(void) 844 { 845 if (platform_device) { 846 alienware_zone_exit(platform_device); 847 remove_hdmi(platform_device); 848 platform_device_unregister(platform_device); 849 platform_driver_unregister(&platform_driver); 850 } 851 } 852 853 module_exit(alienware_wmi_exit); 854