1 /* 2 * Eee PC WMI hotkey driver 3 * 4 * Copyright(C) 2010 Intel Corporation. 5 * Copyright(C) 2010 Corentin Chary <corentin.chary@gmail.com> 6 * 7 * Portions based on wistron_btns.c: 8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz> 9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org> 10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 */ 26 27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 28 29 #include <linux/kernel.h> 30 #include <linux/module.h> 31 #include <linux/init.h> 32 #include <linux/types.h> 33 #include <linux/slab.h> 34 #include <linux/input.h> 35 #include <linux/input/sparse-keymap.h> 36 #include <linux/fb.h> 37 #include <linux/backlight.h> 38 #include <linux/leds.h> 39 #include <linux/rfkill.h> 40 #include <linux/pci.h> 41 #include <linux/pci_hotplug.h> 42 #include <linux/debugfs.h> 43 #include <linux/seq_file.h> 44 #include <linux/platform_device.h> 45 #include <linux/dmi.h> 46 #include <acpi/acpi_bus.h> 47 #include <acpi/acpi_drivers.h> 48 49 #define EEEPC_WMI_FILE "eeepc-wmi" 50 51 MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>"); 52 MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); 53 MODULE_LICENSE("GPL"); 54 55 #define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */ 56 57 #define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000" 58 #define EEEPC_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 59 60 MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID); 61 MODULE_ALIAS("wmi:"EEEPC_WMI_MGMT_GUID); 62 63 #define NOTIFY_BRNUP_MIN 0x11 64 #define NOTIFY_BRNUP_MAX 0x1f 65 #define NOTIFY_BRNDOWN_MIN 0x20 66 #define NOTIFY_BRNDOWN_MAX 0x2e 67 68 #define EEEPC_WMI_METHODID_DSTS 0x53544344 69 #define EEEPC_WMI_METHODID_DEVS 0x53564544 70 #define EEEPC_WMI_METHODID_CFVS 0x53564643 71 72 #define EEEPC_WMI_DEVID_WLAN 0x00010011 73 #define EEEPC_WMI_DEVID_BLUETOOTH 0x00010013 74 #define EEEPC_WMI_DEVID_WIMAX 0x00010017 75 #define EEEPC_WMI_DEVID_WWAN3G 0x00010019 76 #define EEEPC_WMI_DEVID_BACKLIGHT 0x00050011 77 #define EEEPC_WMI_DEVID_BRIGHTNESS 0x00050012 78 #define EEEPC_WMI_DEVID_CAMERA 0x00060013 79 #define EEEPC_WMI_DEVID_CARDREADER 0x00080013 80 #define EEEPC_WMI_DEVID_TOUCHPAD 0x00100011 81 #define EEEPC_WMI_DEVID_TOUCHPAD_LED 0x00100012 82 83 #define EEEPC_WMI_DSTS_STATUS_BIT 0x00000001 84 #define EEEPC_WMI_DSTS_PRESENCE_BIT 0x00010000 85 #define EEEPC_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 86 #define EEEPC_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 87 88 static bool hotplug_wireless; 89 90 module_param(hotplug_wireless, bool, 0444); 91 MODULE_PARM_DESC(hotplug_wireless, 92 "Enable hotplug for wireless device. " 93 "If your laptop needs that, please report to " 94 "acpi4asus-user@lists.sourceforge.net."); 95 96 static const struct key_entry eeepc_wmi_keymap[] = { 97 /* Sleep already handled via generic ACPI code */ 98 { KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } }, 99 { KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } }, 100 { KE_KEY, 0x30, { KEY_VOLUMEUP } }, 101 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 102 { KE_KEY, 0x32, { KEY_MUTE } }, 103 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */ 104 { KE_KEY, 0x5d, { KEY_WLAN } }, 105 { KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */ 106 { KE_KEY, 0x88, { KEY_WLAN } }, 107 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, 108 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */ 109 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */ 110 { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } }, 111 { KE_END, 0}, 112 }; 113 114 struct bios_args { 115 u32 dev_id; 116 u32 ctrl_param; 117 }; 118 119 /* 120 * eeepc-wmi/ - debugfs root directory 121 * dev_id - current dev_id 122 * ctrl_param - current ctrl_param 123 * devs - call DEVS(dev_id, ctrl_param) and print result 124 * dsts - call DSTS(dev_id) and print result 125 */ 126 struct eeepc_wmi_debug { 127 struct dentry *root; 128 u32 dev_id; 129 u32 ctrl_param; 130 }; 131 132 struct eeepc_wmi { 133 bool hotplug_wireless; 134 135 struct input_dev *inputdev; 136 struct backlight_device *backlight_device; 137 struct platform_device *platform_device; 138 139 struct led_classdev tpd_led; 140 int tpd_led_wk; 141 struct workqueue_struct *led_workqueue; 142 struct work_struct tpd_led_work; 143 144 struct rfkill *wlan_rfkill; 145 struct rfkill *bluetooth_rfkill; 146 struct rfkill *wimax_rfkill; 147 struct rfkill *wwan3g_rfkill; 148 149 struct hotplug_slot *hotplug_slot; 150 struct mutex hotplug_lock; 151 struct mutex wmi_lock; 152 struct workqueue_struct *hotplug_workqueue; 153 struct work_struct hotplug_work; 154 155 struct eeepc_wmi_debug debug; 156 }; 157 158 static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc) 159 { 160 int err; 161 162 eeepc->inputdev = input_allocate_device(); 163 if (!eeepc->inputdev) 164 return -ENOMEM; 165 166 eeepc->inputdev->name = "Eee PC WMI hotkeys"; 167 eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0"; 168 eeepc->inputdev->id.bustype = BUS_HOST; 169 eeepc->inputdev->dev.parent = &eeepc->platform_device->dev; 170 171 err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL); 172 if (err) 173 goto err_free_dev; 174 175 err = input_register_device(eeepc->inputdev); 176 if (err) 177 goto err_free_keymap; 178 179 return 0; 180 181 err_free_keymap: 182 sparse_keymap_free(eeepc->inputdev); 183 err_free_dev: 184 input_free_device(eeepc->inputdev); 185 return err; 186 } 187 188 static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc) 189 { 190 if (eeepc->inputdev) { 191 sparse_keymap_free(eeepc->inputdev); 192 input_unregister_device(eeepc->inputdev); 193 } 194 195 eeepc->inputdev = NULL; 196 } 197 198 static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *retval) 199 { 200 struct acpi_buffer input = { (acpi_size)sizeof(u32), &dev_id }; 201 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 202 union acpi_object *obj; 203 acpi_status status; 204 u32 tmp; 205 206 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 207 1, EEEPC_WMI_METHODID_DSTS, 208 &input, &output); 209 210 if (ACPI_FAILURE(status)) 211 return status; 212 213 obj = (union acpi_object *)output.pointer; 214 if (obj && obj->type == ACPI_TYPE_INTEGER) 215 tmp = (u32)obj->integer.value; 216 else 217 tmp = 0; 218 219 if (retval) 220 *retval = tmp; 221 222 kfree(obj); 223 224 return status; 225 226 } 227 228 static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 229 u32 *retval) 230 { 231 struct bios_args args = { 232 .dev_id = dev_id, 233 .ctrl_param = ctrl_param, 234 }; 235 struct acpi_buffer input = { (acpi_size)sizeof(args), &args }; 236 acpi_status status; 237 238 if (!retval) { 239 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, 240 EEEPC_WMI_METHODID_DEVS, 241 &input, NULL); 242 } else { 243 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 244 union acpi_object *obj; 245 u32 tmp; 246 247 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, 248 EEEPC_WMI_METHODID_DEVS, 249 &input, &output); 250 251 if (ACPI_FAILURE(status)) 252 return status; 253 254 obj = (union acpi_object *)output.pointer; 255 if (obj && obj->type == ACPI_TYPE_INTEGER) 256 tmp = (u32)obj->integer.value; 257 else 258 tmp = 0; 259 260 *retval = tmp; 261 262 kfree(obj); 263 } 264 265 return status; 266 } 267 268 /* Helper for special devices with magic return codes */ 269 static int eeepc_wmi_get_devstate_bits(u32 dev_id, u32 mask) 270 { 271 u32 retval = 0; 272 acpi_status status; 273 274 status = eeepc_wmi_get_devstate(dev_id, &retval); 275 276 if (ACPI_FAILURE(status)) 277 return -EINVAL; 278 279 if (!(retval & EEEPC_WMI_DSTS_PRESENCE_BIT)) 280 return -ENODEV; 281 282 return retval & mask; 283 } 284 285 static int eeepc_wmi_get_devstate_simple(u32 dev_id) 286 { 287 return eeepc_wmi_get_devstate_bits(dev_id, EEEPC_WMI_DSTS_STATUS_BIT); 288 } 289 290 /* 291 * LEDs 292 */ 293 /* 294 * These functions actually update the LED's, and are called from a 295 * workqueue. By doing this as separate work rather than when the LED 296 * subsystem asks, we avoid messing with the Eeepc ACPI stuff during a 297 * potentially bad time, such as a timer interrupt. 298 */ 299 static void tpd_led_update(struct work_struct *work) 300 { 301 int ctrl_param; 302 struct eeepc_wmi *eeepc; 303 304 eeepc = container_of(work, struct eeepc_wmi, tpd_led_work); 305 306 ctrl_param = eeepc->tpd_led_wk; 307 eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 308 } 309 310 static void tpd_led_set(struct led_classdev *led_cdev, 311 enum led_brightness value) 312 { 313 struct eeepc_wmi *eeepc; 314 315 eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); 316 317 eeepc->tpd_led_wk = !!value; 318 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work); 319 } 320 321 static int read_tpd_led_state(struct eeepc_wmi *eeepc) 322 { 323 return eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_TOUCHPAD_LED); 324 } 325 326 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 327 { 328 struct eeepc_wmi *eeepc; 329 330 eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); 331 332 return read_tpd_led_state(eeepc); 333 } 334 335 static int eeepc_wmi_led_init(struct eeepc_wmi *eeepc) 336 { 337 int rv; 338 339 if (read_tpd_led_state(eeepc) < 0) 340 return 0; 341 342 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue"); 343 if (!eeepc->led_workqueue) 344 return -ENOMEM; 345 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update); 346 347 eeepc->tpd_led.name = "eeepc::touchpad"; 348 eeepc->tpd_led.brightness_set = tpd_led_set; 349 eeepc->tpd_led.brightness_get = tpd_led_get; 350 eeepc->tpd_led.max_brightness = 1; 351 352 rv = led_classdev_register(&eeepc->platform_device->dev, 353 &eeepc->tpd_led); 354 if (rv) { 355 destroy_workqueue(eeepc->led_workqueue); 356 return rv; 357 } 358 359 return 0; 360 } 361 362 static void eeepc_wmi_led_exit(struct eeepc_wmi *eeepc) 363 { 364 if (eeepc->tpd_led.dev) 365 led_classdev_unregister(&eeepc->tpd_led); 366 if (eeepc->led_workqueue) 367 destroy_workqueue(eeepc->led_workqueue); 368 } 369 370 /* 371 * PCI hotplug (for wlan rfkill) 372 */ 373 static bool eeepc_wlan_rfkill_blocked(struct eeepc_wmi *eeepc) 374 { 375 int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); 376 377 if (result < 0) 378 return false; 379 return !result; 380 } 381 382 static void eeepc_rfkill_hotplug(struct eeepc_wmi *eeepc) 383 { 384 struct pci_dev *dev; 385 struct pci_bus *bus; 386 bool blocked; 387 bool absent; 388 u32 l; 389 390 mutex_lock(&eeepc->wmi_lock); 391 blocked = eeepc_wlan_rfkill_blocked(eeepc); 392 mutex_unlock(&eeepc->wmi_lock); 393 394 mutex_lock(&eeepc->hotplug_lock); 395 396 if (eeepc->wlan_rfkill) 397 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); 398 399 if (eeepc->hotplug_slot) { 400 bus = pci_find_bus(0, 1); 401 if (!bus) { 402 pr_warning("Unable to find PCI bus 1?\n"); 403 goto out_unlock; 404 } 405 406 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 407 pr_err("Unable to read PCI config space?\n"); 408 goto out_unlock; 409 } 410 absent = (l == 0xffffffff); 411 412 if (blocked != absent) { 413 pr_warning("BIOS says wireless lan is %s, " 414 "but the pci device is %s\n", 415 blocked ? "blocked" : "unblocked", 416 absent ? "absent" : "present"); 417 pr_warning("skipped wireless hotplug as probably " 418 "inappropriate for this model\n"); 419 goto out_unlock; 420 } 421 422 if (!blocked) { 423 dev = pci_get_slot(bus, 0); 424 if (dev) { 425 /* Device already present */ 426 pci_dev_put(dev); 427 goto out_unlock; 428 } 429 dev = pci_scan_single_device(bus, 0); 430 if (dev) { 431 pci_bus_assign_resources(bus); 432 if (pci_bus_add_device(dev)) 433 pr_err("Unable to hotplug wifi\n"); 434 } 435 } else { 436 dev = pci_get_slot(bus, 0); 437 if (dev) { 438 pci_remove_bus_device(dev); 439 pci_dev_put(dev); 440 } 441 } 442 } 443 444 out_unlock: 445 mutex_unlock(&eeepc->hotplug_lock); 446 } 447 448 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) 449 { 450 struct eeepc_wmi *eeepc = data; 451 452 if (event != ACPI_NOTIFY_BUS_CHECK) 453 return; 454 455 /* 456 * We can't call directly eeepc_rfkill_hotplug because most 457 * of the time WMBC is still being executed and not reetrant. 458 * There is currently no way to tell ACPICA that we want this 459 * method to be serialized, we schedule a eeepc_rfkill_hotplug 460 * call later, in a safer context. 461 */ 462 queue_work(eeepc->hotplug_workqueue, &eeepc->hotplug_work); 463 } 464 465 static int eeepc_register_rfkill_notifier(struct eeepc_wmi *eeepc, 466 char *node) 467 { 468 acpi_status status; 469 acpi_handle handle; 470 471 status = acpi_get_handle(NULL, node, &handle); 472 473 if (ACPI_SUCCESS(status)) { 474 status = acpi_install_notify_handler(handle, 475 ACPI_SYSTEM_NOTIFY, 476 eeepc_rfkill_notify, 477 eeepc); 478 if (ACPI_FAILURE(status)) 479 pr_warning("Failed to register notify on %s\n", node); 480 } else 481 return -ENODEV; 482 483 return 0; 484 } 485 486 static void eeepc_unregister_rfkill_notifier(struct eeepc_wmi *eeepc, 487 char *node) 488 { 489 acpi_status status = AE_OK; 490 acpi_handle handle; 491 492 status = acpi_get_handle(NULL, node, &handle); 493 494 if (ACPI_SUCCESS(status)) { 495 status = acpi_remove_notify_handler(handle, 496 ACPI_SYSTEM_NOTIFY, 497 eeepc_rfkill_notify); 498 if (ACPI_FAILURE(status)) 499 pr_err("Error removing rfkill notify handler %s\n", 500 node); 501 } 502 } 503 504 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, 505 u8 *value) 506 { 507 int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); 508 509 if (result < 0) 510 return result; 511 512 *value = !!result; 513 return 0; 514 } 515 516 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 517 { 518 kfree(hotplug_slot->info); 519 kfree(hotplug_slot); 520 } 521 522 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = { 523 .owner = THIS_MODULE, 524 .get_adapter_status = eeepc_get_adapter_status, 525 .get_power_status = eeepc_get_adapter_status, 526 }; 527 528 static void eeepc_hotplug_work(struct work_struct *work) 529 { 530 struct eeepc_wmi *eeepc; 531 532 eeepc = container_of(work, struct eeepc_wmi, hotplug_work); 533 eeepc_rfkill_hotplug(eeepc); 534 } 535 536 static int eeepc_setup_pci_hotplug(struct eeepc_wmi *eeepc) 537 { 538 int ret = -ENOMEM; 539 struct pci_bus *bus = pci_find_bus(0, 1); 540 541 if (!bus) { 542 pr_err("Unable to find wifi PCI bus\n"); 543 return -ENODEV; 544 } 545 546 eeepc->hotplug_workqueue = 547 create_singlethread_workqueue("hotplug_workqueue"); 548 if (!eeepc->hotplug_workqueue) 549 goto error_workqueue; 550 551 INIT_WORK(&eeepc->hotplug_work, eeepc_hotplug_work); 552 553 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); 554 if (!eeepc->hotplug_slot) 555 goto error_slot; 556 557 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), 558 GFP_KERNEL); 559 if (!eeepc->hotplug_slot->info) 560 goto error_info; 561 562 eeepc->hotplug_slot->private = eeepc; 563 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug; 564 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops; 565 eeepc_get_adapter_status(eeepc->hotplug_slot, 566 &eeepc->hotplug_slot->info->adapter_status); 567 568 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi"); 569 if (ret) { 570 pr_err("Unable to register hotplug slot - %d\n", ret); 571 goto error_register; 572 } 573 574 return 0; 575 576 error_register: 577 kfree(eeepc->hotplug_slot->info); 578 error_info: 579 kfree(eeepc->hotplug_slot); 580 eeepc->hotplug_slot = NULL; 581 error_slot: 582 destroy_workqueue(eeepc->hotplug_workqueue); 583 error_workqueue: 584 return ret; 585 } 586 587 /* 588 * Rfkill devices 589 */ 590 static int eeepc_rfkill_set(void *data, bool blocked) 591 { 592 int dev_id = (unsigned long)data; 593 u32 ctrl_param = !blocked; 594 acpi_status status; 595 596 status = eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL); 597 598 if (ACPI_FAILURE(status)) 599 return -EIO; 600 601 return 0; 602 } 603 604 static void eeepc_rfkill_query(struct rfkill *rfkill, void *data) 605 { 606 int dev_id = (unsigned long)data; 607 int result; 608 609 result = eeepc_wmi_get_devstate_simple(dev_id); 610 611 if (result < 0) 612 return ; 613 614 rfkill_set_sw_state(rfkill, !result); 615 } 616 617 static int eeepc_rfkill_wlan_set(void *data, bool blocked) 618 { 619 struct eeepc_wmi *eeepc = data; 620 int ret; 621 622 /* 623 * This handler is enabled only if hotplug is enabled. 624 * In this case, the eeepc_wmi_set_devstate() will 625 * trigger a wmi notification and we need to wait 626 * this call to finish before being able to call 627 * any wmi method 628 */ 629 mutex_lock(&eeepc->wmi_lock); 630 ret = eeepc_rfkill_set((void *)(long)EEEPC_WMI_DEVID_WLAN, blocked); 631 mutex_unlock(&eeepc->wmi_lock); 632 return ret; 633 } 634 635 static void eeepc_rfkill_wlan_query(struct rfkill *rfkill, void *data) 636 { 637 eeepc_rfkill_query(rfkill, (void *)(long)EEEPC_WMI_DEVID_WLAN); 638 } 639 640 static const struct rfkill_ops eeepc_rfkill_wlan_ops = { 641 .set_block = eeepc_rfkill_wlan_set, 642 .query = eeepc_rfkill_wlan_query, 643 }; 644 645 static const struct rfkill_ops eeepc_rfkill_ops = { 646 .set_block = eeepc_rfkill_set, 647 .query = eeepc_rfkill_query, 648 }; 649 650 static int eeepc_new_rfkill(struct eeepc_wmi *eeepc, 651 struct rfkill **rfkill, 652 const char *name, 653 enum rfkill_type type, int dev_id) 654 { 655 int result = eeepc_wmi_get_devstate_simple(dev_id); 656 657 if (result < 0) 658 return result; 659 660 if (dev_id == EEEPC_WMI_DEVID_WLAN && eeepc->hotplug_wireless) 661 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, 662 &eeepc_rfkill_wlan_ops, eeepc); 663 else 664 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, 665 &eeepc_rfkill_ops, (void *)(long)dev_id); 666 667 if (!*rfkill) 668 return -EINVAL; 669 670 rfkill_init_sw_state(*rfkill, !result); 671 result = rfkill_register(*rfkill); 672 if (result) { 673 rfkill_destroy(*rfkill); 674 *rfkill = NULL; 675 return result; 676 } 677 return 0; 678 } 679 680 static void eeepc_wmi_rfkill_exit(struct eeepc_wmi *eeepc) 681 { 682 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); 683 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); 684 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); 685 if (eeepc->wlan_rfkill) { 686 rfkill_unregister(eeepc->wlan_rfkill); 687 rfkill_destroy(eeepc->wlan_rfkill); 688 eeepc->wlan_rfkill = NULL; 689 } 690 /* 691 * Refresh pci hotplug in case the rfkill state was changed after 692 * eeepc_unregister_rfkill_notifier() 693 */ 694 eeepc_rfkill_hotplug(eeepc); 695 if (eeepc->hotplug_slot) 696 pci_hp_deregister(eeepc->hotplug_slot); 697 if (eeepc->hotplug_workqueue) 698 destroy_workqueue(eeepc->hotplug_workqueue); 699 700 if (eeepc->bluetooth_rfkill) { 701 rfkill_unregister(eeepc->bluetooth_rfkill); 702 rfkill_destroy(eeepc->bluetooth_rfkill); 703 eeepc->bluetooth_rfkill = NULL; 704 } 705 if (eeepc->wimax_rfkill) { 706 rfkill_unregister(eeepc->wimax_rfkill); 707 rfkill_destroy(eeepc->wimax_rfkill); 708 eeepc->wimax_rfkill = NULL; 709 } 710 if (eeepc->wwan3g_rfkill) { 711 rfkill_unregister(eeepc->wwan3g_rfkill); 712 rfkill_destroy(eeepc->wwan3g_rfkill); 713 eeepc->wwan3g_rfkill = NULL; 714 } 715 } 716 717 static int eeepc_wmi_rfkill_init(struct eeepc_wmi *eeepc) 718 { 719 int result = 0; 720 721 mutex_init(&eeepc->hotplug_lock); 722 mutex_init(&eeepc->wmi_lock); 723 724 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill, 725 "eeepc-wlan", RFKILL_TYPE_WLAN, 726 EEEPC_WMI_DEVID_WLAN); 727 728 if (result && result != -ENODEV) 729 goto exit; 730 731 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill, 732 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH, 733 EEEPC_WMI_DEVID_BLUETOOTH); 734 735 if (result && result != -ENODEV) 736 goto exit; 737 738 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill, 739 "eeepc-wimax", RFKILL_TYPE_WIMAX, 740 EEEPC_WMI_DEVID_WIMAX); 741 742 if (result && result != -ENODEV) 743 goto exit; 744 745 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill, 746 "eeepc-wwan3g", RFKILL_TYPE_WWAN, 747 EEEPC_WMI_DEVID_WWAN3G); 748 749 if (result && result != -ENODEV) 750 goto exit; 751 752 if (!eeepc->hotplug_wireless) 753 goto exit; 754 755 result = eeepc_setup_pci_hotplug(eeepc); 756 /* 757 * If we get -EBUSY then something else is handling the PCI hotplug - 758 * don't fail in this case 759 */ 760 if (result == -EBUSY) 761 result = 0; 762 763 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); 764 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); 765 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); 766 /* 767 * Refresh pci hotplug in case the rfkill state was changed during 768 * setup. 769 */ 770 eeepc_rfkill_hotplug(eeepc); 771 772 exit: 773 if (result && result != -ENODEV) 774 eeepc_wmi_rfkill_exit(eeepc); 775 776 if (result == -ENODEV) 777 result = 0; 778 779 return result; 780 } 781 782 /* 783 * Backlight 784 */ 785 static int read_backlight_power(void) 786 { 787 int ret = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BACKLIGHT); 788 789 if (ret < 0) 790 return ret; 791 792 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 793 } 794 795 static int read_brightness(struct backlight_device *bd) 796 { 797 u32 retval; 798 acpi_status status; 799 800 status = eeepc_wmi_get_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, &retval); 801 802 if (ACPI_FAILURE(status)) 803 return -EIO; 804 else 805 return retval & EEEPC_WMI_DSTS_BRIGHTNESS_MASK; 806 } 807 808 static int update_bl_status(struct backlight_device *bd) 809 { 810 u32 ctrl_param; 811 acpi_status status; 812 int power; 813 814 ctrl_param = bd->props.brightness; 815 816 status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, 817 ctrl_param, NULL); 818 819 if (ACPI_FAILURE(status)) 820 return -EIO; 821 822 power = read_backlight_power(); 823 if (power != -ENODEV && bd->props.power != power) { 824 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 825 status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, 826 ctrl_param, NULL); 827 828 if (ACPI_FAILURE(status)) 829 return -EIO; 830 } 831 return 0; 832 } 833 834 static const struct backlight_ops eeepc_wmi_bl_ops = { 835 .get_brightness = read_brightness, 836 .update_status = update_bl_status, 837 }; 838 839 static int eeepc_wmi_backlight_notify(struct eeepc_wmi *eeepc, int code) 840 { 841 struct backlight_device *bd = eeepc->backlight_device; 842 int old = bd->props.brightness; 843 int new = old; 844 845 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 846 new = code - NOTIFY_BRNUP_MIN + 1; 847 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 848 new = code - NOTIFY_BRNDOWN_MIN; 849 850 bd->props.brightness = new; 851 backlight_update_status(bd); 852 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 853 854 return old; 855 } 856 857 static int eeepc_wmi_backlight_init(struct eeepc_wmi *eeepc) 858 { 859 struct backlight_device *bd; 860 struct backlight_properties props; 861 int max; 862 int power; 863 864 max = eeepc_wmi_get_devstate_bits(EEEPC_WMI_DEVID_BRIGHTNESS, 865 EEEPC_WMI_DSTS_MAX_BRIGTH_MASK); 866 power = read_backlight_power(); 867 868 if (max < 0 && power < 0) { 869 /* Try to keep the original error */ 870 if (max == -ENODEV && power == -ENODEV) 871 return -ENODEV; 872 if (max != -ENODEV) 873 return max; 874 else 875 return power; 876 } 877 if (max == -ENODEV) 878 max = 0; 879 if (power == -ENODEV) 880 power = FB_BLANK_UNBLANK; 881 882 memset(&props, 0, sizeof(struct backlight_properties)); 883 props.max_brightness = max; 884 bd = backlight_device_register(EEEPC_WMI_FILE, 885 &eeepc->platform_device->dev, eeepc, 886 &eeepc_wmi_bl_ops, &props); 887 if (IS_ERR(bd)) { 888 pr_err("Could not register backlight device\n"); 889 return PTR_ERR(bd); 890 } 891 892 eeepc->backlight_device = bd; 893 894 bd->props.brightness = read_brightness(bd); 895 bd->props.power = power; 896 backlight_update_status(bd); 897 898 return 0; 899 } 900 901 static void eeepc_wmi_backlight_exit(struct eeepc_wmi *eeepc) 902 { 903 if (eeepc->backlight_device) 904 backlight_device_unregister(eeepc->backlight_device); 905 906 eeepc->backlight_device = NULL; 907 } 908 909 static void eeepc_wmi_notify(u32 value, void *context) 910 { 911 struct eeepc_wmi *eeepc = context; 912 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 913 union acpi_object *obj; 914 acpi_status status; 915 int code; 916 int orig_code; 917 918 status = wmi_get_event_data(value, &response); 919 if (status != AE_OK) { 920 pr_err("bad event status 0x%x\n", status); 921 return; 922 } 923 924 obj = (union acpi_object *)response.pointer; 925 926 if (obj && obj->type == ACPI_TYPE_INTEGER) { 927 code = obj->integer.value; 928 orig_code = code; 929 930 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 931 code = NOTIFY_BRNUP_MIN; 932 else if (code >= NOTIFY_BRNDOWN_MIN && 933 code <= NOTIFY_BRNDOWN_MAX) 934 code = NOTIFY_BRNDOWN_MIN; 935 936 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) { 937 if (!acpi_video_backlight_support()) 938 eeepc_wmi_backlight_notify(eeepc, orig_code); 939 } 940 941 if (!sparse_keymap_report_event(eeepc->inputdev, 942 code, 1, true)) 943 pr_info("Unknown key %x pressed\n", code); 944 } 945 946 kfree(obj); 947 } 948 949 /* 950 * Sys helpers 951 */ 952 static int parse_arg(const char *buf, unsigned long count, int *val) 953 { 954 if (!count) 955 return 0; 956 if (sscanf(buf, "%i", val) != 1) 957 return -EINVAL; 958 return count; 959 } 960 961 static ssize_t store_sys_wmi(int devid, const char *buf, size_t count) 962 { 963 acpi_status status; 964 u32 retval; 965 int rv, value; 966 967 value = eeepc_wmi_get_devstate_simple(devid); 968 if (value == -ENODEV) /* Check device presence */ 969 return value; 970 971 rv = parse_arg(buf, count, &value); 972 status = eeepc_wmi_set_devstate(devid, value, &retval); 973 974 if (ACPI_FAILURE(status)) 975 return -EIO; 976 return rv; 977 } 978 979 static ssize_t show_sys_wmi(int devid, char *buf) 980 { 981 int value = eeepc_wmi_get_devstate_simple(devid); 982 983 if (value < 0) 984 return value; 985 986 return sprintf(buf, "%d\n", value); 987 } 988 989 #define EEEPC_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 990 static ssize_t show_##_name(struct device *dev, \ 991 struct device_attribute *attr, \ 992 char *buf) \ 993 { \ 994 return show_sys_wmi(_cm, buf); \ 995 } \ 996 static ssize_t store_##_name(struct device *dev, \ 997 struct device_attribute *attr, \ 998 const char *buf, size_t count) \ 999 { \ 1000 return store_sys_wmi(_cm, buf, count); \ 1001 } \ 1002 static struct device_attribute dev_attr_##_name = { \ 1003 .attr = { \ 1004 .name = __stringify(_name), \ 1005 .mode = _mode }, \ 1006 .show = show_##_name, \ 1007 .store = store_##_name, \ 1008 } 1009 1010 EEEPC_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, EEEPC_WMI_DEVID_TOUCHPAD); 1011 EEEPC_WMI_CREATE_DEVICE_ATTR(camera, 0644, EEEPC_WMI_DEVID_CAMERA); 1012 EEEPC_WMI_CREATE_DEVICE_ATTR(cardr, 0644, EEEPC_WMI_DEVID_CARDREADER); 1013 1014 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, 1015 const char *buf, size_t count) 1016 { 1017 int value; 1018 struct acpi_buffer input = { (acpi_size)sizeof(value), &value }; 1019 acpi_status status; 1020 1021 if (!count || sscanf(buf, "%i", &value) != 1) 1022 return -EINVAL; 1023 if (value < 0 || value > 2) 1024 return -EINVAL; 1025 1026 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1027 1, EEEPC_WMI_METHODID_CFVS, &input, NULL); 1028 1029 if (ACPI_FAILURE(status)) 1030 return -EIO; 1031 else 1032 return count; 1033 } 1034 1035 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); 1036 1037 static struct attribute *platform_attributes[] = { 1038 &dev_attr_cpufv.attr, 1039 &dev_attr_camera.attr, 1040 &dev_attr_cardr.attr, 1041 &dev_attr_touchpad.attr, 1042 NULL 1043 }; 1044 1045 static mode_t eeepc_sysfs_is_visible(struct kobject *kobj, 1046 struct attribute *attr, 1047 int idx) 1048 { 1049 bool supported = true; 1050 int devid = -1; 1051 1052 if (attr == &dev_attr_camera.attr) 1053 devid = EEEPC_WMI_DEVID_CAMERA; 1054 else if (attr == &dev_attr_cardr.attr) 1055 devid = EEEPC_WMI_DEVID_CARDREADER; 1056 else if (attr == &dev_attr_touchpad.attr) 1057 devid = EEEPC_WMI_DEVID_TOUCHPAD; 1058 1059 if (devid != -1) 1060 supported = eeepc_wmi_get_devstate_simple(devid) != -ENODEV; 1061 1062 return supported ? attr->mode : 0; 1063 } 1064 1065 static struct attribute_group platform_attribute_group = { 1066 .is_visible = eeepc_sysfs_is_visible, 1067 .attrs = platform_attributes 1068 }; 1069 1070 static void eeepc_wmi_sysfs_exit(struct platform_device *device) 1071 { 1072 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1073 } 1074 1075 static int eeepc_wmi_sysfs_init(struct platform_device *device) 1076 { 1077 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1078 } 1079 1080 /* 1081 * Platform device 1082 */ 1083 static int __init eeepc_wmi_platform_init(struct eeepc_wmi *eeepc) 1084 { 1085 return eeepc_wmi_sysfs_init(eeepc->platform_device); 1086 } 1087 1088 static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc) 1089 { 1090 eeepc_wmi_sysfs_exit(eeepc->platform_device); 1091 } 1092 1093 /* 1094 * debugfs 1095 */ 1096 struct eeepc_wmi_debugfs_node { 1097 struct eeepc_wmi *eeepc; 1098 char *name; 1099 int (*show)(struct seq_file *m, void *data); 1100 }; 1101 1102 static int show_dsts(struct seq_file *m, void *data) 1103 { 1104 struct eeepc_wmi *eeepc = m->private; 1105 acpi_status status; 1106 u32 retval = -1; 1107 1108 status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval); 1109 1110 if (ACPI_FAILURE(status)) 1111 return -EIO; 1112 1113 seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval); 1114 1115 return 0; 1116 } 1117 1118 static int show_devs(struct seq_file *m, void *data) 1119 { 1120 struct eeepc_wmi *eeepc = m->private; 1121 acpi_status status; 1122 u32 retval = -1; 1123 1124 status = eeepc_wmi_set_devstate(eeepc->debug.dev_id, 1125 eeepc->debug.ctrl_param, &retval); 1126 if (ACPI_FAILURE(status)) 1127 return -EIO; 1128 1129 seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id, 1130 eeepc->debug.ctrl_param, retval); 1131 1132 return 0; 1133 } 1134 1135 static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = { 1136 { NULL, "devs", show_devs }, 1137 { NULL, "dsts", show_dsts }, 1138 }; 1139 1140 static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file) 1141 { 1142 struct eeepc_wmi_debugfs_node *node = inode->i_private; 1143 1144 return single_open(file, node->show, node->eeepc); 1145 } 1146 1147 static const struct file_operations eeepc_wmi_debugfs_io_ops = { 1148 .owner = THIS_MODULE, 1149 .open = eeepc_wmi_debugfs_open, 1150 .read = seq_read, 1151 .llseek = seq_lseek, 1152 .release = single_release, 1153 }; 1154 1155 static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc) 1156 { 1157 debugfs_remove_recursive(eeepc->debug.root); 1158 } 1159 1160 static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc) 1161 { 1162 struct dentry *dent; 1163 int i; 1164 1165 eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL); 1166 if (!eeepc->debug.root) { 1167 pr_err("failed to create debugfs directory"); 1168 goto error_debugfs; 1169 } 1170 1171 dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR, 1172 eeepc->debug.root, &eeepc->debug.dev_id); 1173 if (!dent) 1174 goto error_debugfs; 1175 1176 dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR, 1177 eeepc->debug.root, &eeepc->debug.ctrl_param); 1178 if (!dent) 1179 goto error_debugfs; 1180 1181 for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) { 1182 struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i]; 1183 1184 node->eeepc = eeepc; 1185 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 1186 eeepc->debug.root, node, 1187 &eeepc_wmi_debugfs_io_ops); 1188 if (!dent) { 1189 pr_err("failed to create debug file: %s\n", node->name); 1190 goto error_debugfs; 1191 } 1192 } 1193 1194 return 0; 1195 1196 error_debugfs: 1197 eeepc_wmi_debugfs_exit(eeepc); 1198 return -ENOMEM; 1199 } 1200 1201 /* 1202 * WMI Driver 1203 */ 1204 static void eeepc_dmi_check(struct eeepc_wmi *eeepc) 1205 { 1206 const char *model; 1207 1208 model = dmi_get_system_info(DMI_PRODUCT_NAME); 1209 if (!model) 1210 return; 1211 1212 /* 1213 * Whitelist for wlan hotplug 1214 * 1215 * Eeepc 1000H needs the current hotplug code to handle 1216 * Fn+F2 correctly. We may add other Eeepc here later, but 1217 * it seems that most of the laptops supported by eeepc-wmi 1218 * don't need to be on this list 1219 */ 1220 if (strcmp(model, "1000H") == 0) { 1221 eeepc->hotplug_wireless = true; 1222 pr_info("wlan hotplug enabled\n"); 1223 } 1224 } 1225 1226 static int __init eeepc_wmi_add(struct platform_device *pdev) 1227 { 1228 struct eeepc_wmi *eeepc; 1229 acpi_status status; 1230 int err; 1231 1232 eeepc = kzalloc(sizeof(struct eeepc_wmi), GFP_KERNEL); 1233 if (!eeepc) 1234 return -ENOMEM; 1235 1236 eeepc->platform_device = pdev; 1237 platform_set_drvdata(eeepc->platform_device, eeepc); 1238 1239 eeepc->hotplug_wireless = hotplug_wireless; 1240 eeepc_dmi_check(eeepc); 1241 1242 err = eeepc_wmi_platform_init(eeepc); 1243 if (err) 1244 goto fail_platform; 1245 1246 err = eeepc_wmi_input_init(eeepc); 1247 if (err) 1248 goto fail_input; 1249 1250 err = eeepc_wmi_led_init(eeepc); 1251 if (err) 1252 goto fail_leds; 1253 1254 err = eeepc_wmi_rfkill_init(eeepc); 1255 if (err) 1256 goto fail_rfkill; 1257 1258 if (!acpi_video_backlight_support()) { 1259 err = eeepc_wmi_backlight_init(eeepc); 1260 if (err && err != -ENODEV) 1261 goto fail_backlight; 1262 } else 1263 pr_info("Backlight controlled by ACPI video driver\n"); 1264 1265 status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, 1266 eeepc_wmi_notify, eeepc); 1267 if (ACPI_FAILURE(status)) { 1268 pr_err("Unable to register notify handler - %d\n", 1269 status); 1270 err = -ENODEV; 1271 goto fail_wmi_handler; 1272 } 1273 1274 err = eeepc_wmi_debugfs_init(eeepc); 1275 if (err) 1276 goto fail_debugfs; 1277 1278 return 0; 1279 1280 fail_debugfs: 1281 wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); 1282 fail_wmi_handler: 1283 eeepc_wmi_backlight_exit(eeepc); 1284 fail_backlight: 1285 eeepc_wmi_rfkill_exit(eeepc); 1286 fail_rfkill: 1287 eeepc_wmi_led_exit(eeepc); 1288 fail_leds: 1289 eeepc_wmi_input_exit(eeepc); 1290 fail_input: 1291 eeepc_wmi_platform_exit(eeepc); 1292 fail_platform: 1293 kfree(eeepc); 1294 return err; 1295 } 1296 1297 static int __exit eeepc_wmi_remove(struct platform_device *device) 1298 { 1299 struct eeepc_wmi *eeepc; 1300 1301 eeepc = platform_get_drvdata(device); 1302 wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); 1303 eeepc_wmi_backlight_exit(eeepc); 1304 eeepc_wmi_input_exit(eeepc); 1305 eeepc_wmi_led_exit(eeepc); 1306 eeepc_wmi_rfkill_exit(eeepc); 1307 eeepc_wmi_debugfs_exit(eeepc); 1308 eeepc_wmi_platform_exit(eeepc); 1309 1310 kfree(eeepc); 1311 return 0; 1312 } 1313 1314 /* 1315 * Platform driver - hibernate/resume callbacks 1316 */ 1317 static int eeepc_hotk_thaw(struct device *device) 1318 { 1319 struct eeepc_wmi *eeepc = dev_get_drvdata(device); 1320 1321 if (eeepc->wlan_rfkill) { 1322 bool wlan; 1323 1324 /* 1325 * Work around bios bug - acpi _PTS turns off the wireless led 1326 * during suspend. Normally it restores it on resume, but 1327 * we should kick it ourselves in case hibernation is aborted. 1328 */ 1329 wlan = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); 1330 eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_WLAN, wlan, NULL); 1331 } 1332 1333 return 0; 1334 } 1335 1336 static int eeepc_hotk_restore(struct device *device) 1337 { 1338 struct eeepc_wmi *eeepc = dev_get_drvdata(device); 1339 int bl; 1340 1341 /* Refresh both wlan rfkill state and pci hotplug */ 1342 if (eeepc->wlan_rfkill) 1343 eeepc_rfkill_hotplug(eeepc); 1344 1345 if (eeepc->bluetooth_rfkill) { 1346 bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BLUETOOTH); 1347 rfkill_set_sw_state(eeepc->bluetooth_rfkill, bl); 1348 } 1349 if (eeepc->wimax_rfkill) { 1350 bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WIMAX); 1351 rfkill_set_sw_state(eeepc->wimax_rfkill, bl); 1352 } 1353 if (eeepc->wwan3g_rfkill) { 1354 bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WWAN3G); 1355 rfkill_set_sw_state(eeepc->wwan3g_rfkill, bl); 1356 } 1357 1358 return 0; 1359 } 1360 1361 static const struct dev_pm_ops eeepc_pm_ops = { 1362 .thaw = eeepc_hotk_thaw, 1363 .restore = eeepc_hotk_restore, 1364 }; 1365 1366 static struct platform_driver platform_driver = { 1367 .remove = __exit_p(eeepc_wmi_remove), 1368 .driver = { 1369 .name = EEEPC_WMI_FILE, 1370 .owner = THIS_MODULE, 1371 .pm = &eeepc_pm_ops, 1372 }, 1373 }; 1374 1375 static acpi_status __init eeepc_wmi_parse_device(acpi_handle handle, u32 level, 1376 void *context, void **retval) 1377 { 1378 pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID); 1379 *(bool *)context = true; 1380 return AE_CTRL_TERMINATE; 1381 } 1382 1383 static int __init eeepc_wmi_check_atkd(void) 1384 { 1385 acpi_status status; 1386 bool found = false; 1387 1388 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, 1389 &found, NULL); 1390 1391 if (ACPI_FAILURE(status) || !found) 1392 return 0; 1393 return -1; 1394 } 1395 1396 static int __init eeepc_wmi_probe(struct platform_device *pdev) 1397 { 1398 if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID) || 1399 !wmi_has_guid(EEEPC_WMI_MGMT_GUID)) { 1400 pr_warning("No known WMI GUID found\n"); 1401 return -ENODEV; 1402 } 1403 1404 if (eeepc_wmi_check_atkd()) { 1405 pr_warning("WMI device present, but legacy ATKD device is also " 1406 "present and enabled."); 1407 pr_warning("You probably booted with acpi_osi=\"Linux\" or " 1408 "acpi_osi=\"!Windows 2009\""); 1409 pr_warning("Can't load eeepc-wmi, use default acpi_osi " 1410 "(preferred) or eeepc-laptop"); 1411 return -ENODEV; 1412 } 1413 1414 return eeepc_wmi_add(pdev); 1415 } 1416 1417 static struct platform_device *platform_device; 1418 1419 static int __init eeepc_wmi_init(void) 1420 { 1421 platform_device = platform_create_bundle(&platform_driver, 1422 eeepc_wmi_probe, 1423 NULL, 0, NULL, 0); 1424 if (IS_ERR(platform_device)) 1425 return PTR_ERR(platform_device); 1426 return 0; 1427 } 1428 1429 static void __exit eeepc_wmi_exit(void) 1430 { 1431 platform_device_unregister(platform_device); 1432 platform_driver_unregister(&platform_driver); 1433 } 1434 1435 module_init(eeepc_wmi_init); 1436 module_exit(eeepc_wmi_exit); 1437