1/* 2 * Asus PC WMI hotkey driver 3 * 4 * Copyright(C) 2010 Intel Corporation. 5 * Copyright(C) 2010-2011 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/hwmon.h> 43#include <linux/hwmon-sysfs.h> 44#include <linux/debugfs.h> 45#include <linux/seq_file.h> 46#include <linux/platform_device.h> 47#include <linux/thermal.h> 48#include <linux/acpi.h> 49#include <linux/dmi.h> 50#include <acpi/video.h> 51 52#include "asus-wmi.h" 53 54MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, " 55 "Yong Wang <yong.y.wang@intel.com>"); 56MODULE_DESCRIPTION("Asus Generic WMI Driver"); 57MODULE_LICENSE("GPL"); 58 59#define to_platform_driver(drv) \ 60 (container_of((drv), struct platform_driver, driver)) 61 62#define to_asus_wmi_driver(pdrv) \ 63 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 64 65#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 66 67#define NOTIFY_BRNUP_MIN 0x11 68#define NOTIFY_BRNUP_MAX 0x1f 69#define NOTIFY_BRNDOWN_MIN 0x20 70#define NOTIFY_BRNDOWN_MAX 0x2e 71#define NOTIFY_KBD_BRTUP 0xc4 72#define NOTIFY_KBD_BRTDWN 0xc5 73 74/* WMI Methods */ 75#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */ 76#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */ 77#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */ 78#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */ 79#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */ 80#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */ 81#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */ 82#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */ 83#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */ 84#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */ 85#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */ 86#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */ 87#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/ 88#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */ 89#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */ 90#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */ 91#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ 92#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ 93#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ 94 95#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE 96 97/* Wireless */ 98#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 99#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 100#define ASUS_WMI_DEVID_CWAP 0x00010003 101#define ASUS_WMI_DEVID_WLAN 0x00010011 102#define ASUS_WMI_DEVID_WLAN_LED 0x00010012 103#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 104#define ASUS_WMI_DEVID_GPS 0x00010015 105#define ASUS_WMI_DEVID_WIMAX 0x00010017 106#define ASUS_WMI_DEVID_WWAN3G 0x00010019 107#define ASUS_WMI_DEVID_UWB 0x00010021 108 109/* Leds */ 110/* 0x000200XX and 0x000400XX */ 111#define ASUS_WMI_DEVID_LED1 0x00020011 112#define ASUS_WMI_DEVID_LED2 0x00020012 113#define ASUS_WMI_DEVID_LED3 0x00020013 114#define ASUS_WMI_DEVID_LED4 0x00020014 115#define ASUS_WMI_DEVID_LED5 0x00020015 116#define ASUS_WMI_DEVID_LED6 0x00020016 117 118/* Backlight and Brightness */ 119#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011 120#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 121#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 122#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ 123 124/* Misc */ 125#define ASUS_WMI_DEVID_CAMERA 0x00060013 126 127/* Storage */ 128#define ASUS_WMI_DEVID_CARDREADER 0x00080013 129 130/* Input */ 131#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 132#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 133 134/* Fan, Thermal */ 135#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 136#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 137 138/* Power */ 139#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 140 141/* Deep S3 / Resume on LID open */ 142#define ASUS_WMI_DEVID_LID_RESUME 0x00120031 143 144/* DSTS masks */ 145#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 146#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 147#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 148#define ASUS_WMI_DSTS_USER_BIT 0x00020000 149#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 150#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 151#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 152 153struct bios_args { 154 u32 arg0; 155 u32 arg1; 156} __packed; 157 158/* 159 * <platform>/ - debugfs root directory 160 * dev_id - current dev_id 161 * ctrl_param - current ctrl_param 162 * method_id - current method_id 163 * devs - call DEVS(dev_id, ctrl_param) and print result 164 * dsts - call DSTS(dev_id) and print result 165 * call - call method_id(dev_id, ctrl_param) and print result 166 */ 167struct asus_wmi_debug { 168 struct dentry *root; 169 u32 method_id; 170 u32 dev_id; 171 u32 ctrl_param; 172}; 173 174struct asus_rfkill { 175 struct asus_wmi *asus; 176 struct rfkill *rfkill; 177 u32 dev_id; 178}; 179 180struct asus_wmi { 181 int dsts_id; 182 int spec; 183 int sfun; 184 185 struct input_dev *inputdev; 186 struct backlight_device *backlight_device; 187 struct platform_device *platform_device; 188 189 struct led_classdev wlan_led; 190 int wlan_led_wk; 191 struct led_classdev tpd_led; 192 int tpd_led_wk; 193 struct led_classdev kbd_led; 194 int kbd_led_wk; 195 struct workqueue_struct *led_workqueue; 196 struct work_struct tpd_led_work; 197 struct work_struct kbd_led_work; 198 struct work_struct wlan_led_work; 199 200 struct asus_rfkill wlan; 201 struct asus_rfkill bluetooth; 202 struct asus_rfkill wimax; 203 struct asus_rfkill wwan3g; 204 struct asus_rfkill gps; 205 struct asus_rfkill uwb; 206 207 struct hotplug_slot *hotplug_slot; 208 struct mutex hotplug_lock; 209 struct mutex wmi_lock; 210 struct workqueue_struct *hotplug_workqueue; 211 struct work_struct hotplug_work; 212 213 struct asus_wmi_debug debug; 214 215 struct asus_wmi_driver *driver; 216}; 217 218static int asus_wmi_input_init(struct asus_wmi *asus) 219{ 220 int err; 221 222 asus->inputdev = input_allocate_device(); 223 if (!asus->inputdev) 224 return -ENOMEM; 225 226 asus->inputdev->name = asus->driver->input_name; 227 asus->inputdev->phys = asus->driver->input_phys; 228 asus->inputdev->id.bustype = BUS_HOST; 229 asus->inputdev->dev.parent = &asus->platform_device->dev; 230 set_bit(EV_REP, asus->inputdev->evbit); 231 232 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 233 if (err) 234 goto err_free_dev; 235 236 err = input_register_device(asus->inputdev); 237 if (err) 238 goto err_free_keymap; 239 240 return 0; 241 242err_free_keymap: 243 sparse_keymap_free(asus->inputdev); 244err_free_dev: 245 input_free_device(asus->inputdev); 246 return err; 247} 248 249static void asus_wmi_input_exit(struct asus_wmi *asus) 250{ 251 if (asus->inputdev) { 252 sparse_keymap_free(asus->inputdev); 253 input_unregister_device(asus->inputdev); 254 } 255 256 asus->inputdev = NULL; 257} 258 259static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, 260 u32 *retval) 261{ 262 struct bios_args args = { 263 .arg0 = arg0, 264 .arg1 = arg1, 265 }; 266 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 267 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 268 acpi_status status; 269 union acpi_object *obj; 270 u32 tmp = 0; 271 272 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id, 273 &input, &output); 274 275 if (ACPI_FAILURE(status)) 276 goto exit; 277 278 obj = (union acpi_object *)output.pointer; 279 if (obj && obj->type == ACPI_TYPE_INTEGER) 280 tmp = (u32) obj->integer.value; 281 282 if (retval) 283 *retval = tmp; 284 285 kfree(obj); 286 287exit: 288 if (ACPI_FAILURE(status)) 289 return -EIO; 290 291 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 292 return -ENODEV; 293 294 return 0; 295} 296 297static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 298{ 299 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 300} 301 302static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 303 u32 *retval) 304{ 305 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 306 ctrl_param, retval); 307} 308 309/* Helper for special devices with magic return codes */ 310static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 311 u32 dev_id, u32 mask) 312{ 313 u32 retval = 0; 314 int err; 315 316 err = asus_wmi_get_devstate(asus, dev_id, &retval); 317 318 if (err < 0) 319 return err; 320 321 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 322 return -ENODEV; 323 324 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 325 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 326 return -ENODEV; 327 } 328 329 return retval & mask; 330} 331 332static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 333{ 334 return asus_wmi_get_devstate_bits(asus, dev_id, 335 ASUS_WMI_DSTS_STATUS_BIT); 336} 337 338/* 339 * LEDs 340 */ 341/* 342 * These functions actually update the LED's, and are called from a 343 * workqueue. By doing this as separate work rather than when the LED 344 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 345 * potentially bad time, such as a timer interrupt. 346 */ 347static void tpd_led_update(struct work_struct *work) 348{ 349 int ctrl_param; 350 struct asus_wmi *asus; 351 352 asus = container_of(work, struct asus_wmi, tpd_led_work); 353 354 ctrl_param = asus->tpd_led_wk; 355 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 356} 357 358static void tpd_led_set(struct led_classdev *led_cdev, 359 enum led_brightness value) 360{ 361 struct asus_wmi *asus; 362 363 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 364 365 asus->tpd_led_wk = !!value; 366 queue_work(asus->led_workqueue, &asus->tpd_led_work); 367} 368 369static int read_tpd_led_state(struct asus_wmi *asus) 370{ 371 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 372} 373 374static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 375{ 376 struct asus_wmi *asus; 377 378 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 379 380 return read_tpd_led_state(asus); 381} 382 383static void kbd_led_update(struct work_struct *work) 384{ 385 int ctrl_param = 0; 386 struct asus_wmi *asus; 387 388 asus = container_of(work, struct asus_wmi, kbd_led_work); 389 390 /* 391 * bits 0-2: level 392 * bit 7: light on/off 393 */ 394 if (asus->kbd_led_wk > 0) 395 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 396 397 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 398} 399 400static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 401{ 402 int retval; 403 404 /* 405 * bits 0-2: level 406 * bit 7: light on/off 407 * bit 8-10: environment (0: dark, 1: normal, 2: light) 408 * bit 17: status unknown 409 */ 410 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 411 0xFFFF); 412 413 /* Unknown status is considered as off */ 414 if (retval == 0x8000) 415 retval = 0; 416 417 if (retval >= 0) { 418 if (level) 419 *level = retval & 0x7F; 420 if (env) 421 *env = (retval >> 8) & 0x7F; 422 retval = 0; 423 } 424 425 return retval; 426} 427 428static void kbd_led_set(struct led_classdev *led_cdev, 429 enum led_brightness value) 430{ 431 struct asus_wmi *asus; 432 433 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 434 435 if (value > asus->kbd_led.max_brightness) 436 value = asus->kbd_led.max_brightness; 437 else if (value < 0) 438 value = 0; 439 440 asus->kbd_led_wk = value; 441 queue_work(asus->led_workqueue, &asus->kbd_led_work); 442} 443 444static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 445{ 446 struct asus_wmi *asus; 447 int retval, value; 448 449 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 450 451 retval = kbd_led_read(asus, &value, NULL); 452 453 if (retval < 0) 454 return retval; 455 456 return value; 457} 458 459static int wlan_led_unknown_state(struct asus_wmi *asus) 460{ 461 u32 result; 462 463 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 464 465 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 466} 467 468static int wlan_led_presence(struct asus_wmi *asus) 469{ 470 u32 result; 471 472 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 473 474 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 475} 476 477static void wlan_led_update(struct work_struct *work) 478{ 479 int ctrl_param; 480 struct asus_wmi *asus; 481 482 asus = container_of(work, struct asus_wmi, wlan_led_work); 483 484 ctrl_param = asus->wlan_led_wk; 485 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 486} 487 488static void wlan_led_set(struct led_classdev *led_cdev, 489 enum led_brightness value) 490{ 491 struct asus_wmi *asus; 492 493 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 494 495 asus->wlan_led_wk = !!value; 496 queue_work(asus->led_workqueue, &asus->wlan_led_work); 497} 498 499static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 500{ 501 struct asus_wmi *asus; 502 u32 result; 503 504 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 505 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 506 507 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 508} 509 510static void asus_wmi_led_exit(struct asus_wmi *asus) 511{ 512 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 513 led_classdev_unregister(&asus->kbd_led); 514 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 515 led_classdev_unregister(&asus->tpd_led); 516 if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) 517 led_classdev_unregister(&asus->wlan_led); 518 if (asus->led_workqueue) 519 destroy_workqueue(asus->led_workqueue); 520} 521 522static int asus_wmi_led_init(struct asus_wmi *asus) 523{ 524 int rv = 0; 525 526 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 527 if (!asus->led_workqueue) 528 return -ENOMEM; 529 530 if (read_tpd_led_state(asus) >= 0) { 531 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 532 533 asus->tpd_led.name = "asus::touchpad"; 534 asus->tpd_led.brightness_set = tpd_led_set; 535 asus->tpd_led.brightness_get = tpd_led_get; 536 asus->tpd_led.max_brightness = 1; 537 538 rv = led_classdev_register(&asus->platform_device->dev, 539 &asus->tpd_led); 540 if (rv) 541 goto error; 542 } 543 544 if (kbd_led_read(asus, NULL, NULL) >= 0) { 545 INIT_WORK(&asus->kbd_led_work, kbd_led_update); 546 547 asus->kbd_led.name = "asus::kbd_backlight"; 548 asus->kbd_led.brightness_set = kbd_led_set; 549 asus->kbd_led.brightness_get = kbd_led_get; 550 asus->kbd_led.max_brightness = 3; 551 552 rv = led_classdev_register(&asus->platform_device->dev, 553 &asus->kbd_led); 554 if (rv) 555 goto error; 556 } 557 558 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) { 559 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 560 561 asus->wlan_led.name = "asus::wlan"; 562 asus->wlan_led.brightness_set = wlan_led_set; 563 if (!wlan_led_unknown_state(asus)) 564 asus->wlan_led.brightness_get = wlan_led_get; 565 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 566 asus->wlan_led.max_brightness = 1; 567 asus->wlan_led.default_trigger = "asus-wlan"; 568 569 rv = led_classdev_register(&asus->platform_device->dev, 570 &asus->wlan_led); 571 } 572 573error: 574 if (rv) 575 asus_wmi_led_exit(asus); 576 577 return rv; 578} 579 580 581/* 582 * PCI hotplug (for wlan rfkill) 583 */ 584static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 585{ 586 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 587 588 if (result < 0) 589 return false; 590 return !result; 591} 592 593static void asus_rfkill_hotplug(struct asus_wmi *asus) 594{ 595 struct pci_dev *dev; 596 struct pci_bus *bus; 597 bool blocked; 598 bool absent; 599 u32 l; 600 601 mutex_lock(&asus->wmi_lock); 602 blocked = asus_wlan_rfkill_blocked(asus); 603 mutex_unlock(&asus->wmi_lock); 604 605 mutex_lock(&asus->hotplug_lock); 606 pci_lock_rescan_remove(); 607 608 if (asus->wlan.rfkill) 609 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 610 611 if (asus->hotplug_slot) { 612 bus = pci_find_bus(0, 1); 613 if (!bus) { 614 pr_warn("Unable to find PCI bus 1?\n"); 615 goto out_unlock; 616 } 617 618 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 619 pr_err("Unable to read PCI config space?\n"); 620 goto out_unlock; 621 } 622 absent = (l == 0xffffffff); 623 624 if (blocked != absent) { 625 pr_warn("BIOS says wireless lan is %s, " 626 "but the pci device is %s\n", 627 blocked ? "blocked" : "unblocked", 628 absent ? "absent" : "present"); 629 pr_warn("skipped wireless hotplug as probably " 630 "inappropriate for this model\n"); 631 goto out_unlock; 632 } 633 634 if (!blocked) { 635 dev = pci_get_slot(bus, 0); 636 if (dev) { 637 /* Device already present */ 638 pci_dev_put(dev); 639 goto out_unlock; 640 } 641 dev = pci_scan_single_device(bus, 0); 642 if (dev) { 643 pci_bus_assign_resources(bus); 644 pci_bus_add_device(dev); 645 } 646 } else { 647 dev = pci_get_slot(bus, 0); 648 if (dev) { 649 pci_stop_and_remove_bus_device(dev); 650 pci_dev_put(dev); 651 } 652 } 653 } 654 655out_unlock: 656 pci_unlock_rescan_remove(); 657 mutex_unlock(&asus->hotplug_lock); 658} 659 660static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 661{ 662 struct asus_wmi *asus = data; 663 664 if (event != ACPI_NOTIFY_BUS_CHECK) 665 return; 666 667 /* 668 * We can't call directly asus_rfkill_hotplug because most 669 * of the time WMBC is still being executed and not reetrant. 670 * There is currently no way to tell ACPICA that we want this 671 * method to be serialized, we schedule a asus_rfkill_hotplug 672 * call later, in a safer context. 673 */ 674 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 675} 676 677static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 678{ 679 acpi_status status; 680 acpi_handle handle; 681 682 status = acpi_get_handle(NULL, node, &handle); 683 684 if (ACPI_SUCCESS(status)) { 685 status = acpi_install_notify_handler(handle, 686 ACPI_SYSTEM_NOTIFY, 687 asus_rfkill_notify, asus); 688 if (ACPI_FAILURE(status)) 689 pr_warn("Failed to register notify on %s\n", node); 690 } else 691 return -ENODEV; 692 693 return 0; 694} 695 696static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 697{ 698 acpi_status status = AE_OK; 699 acpi_handle handle; 700 701 status = acpi_get_handle(NULL, node, &handle); 702 703 if (ACPI_SUCCESS(status)) { 704 status = acpi_remove_notify_handler(handle, 705 ACPI_SYSTEM_NOTIFY, 706 asus_rfkill_notify); 707 if (ACPI_FAILURE(status)) 708 pr_err("Error removing rfkill notify handler %s\n", 709 node); 710 } 711} 712 713static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 714 u8 *value) 715{ 716 struct asus_wmi *asus = hotplug_slot->private; 717 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 718 719 if (result < 0) 720 return result; 721 722 *value = !!result; 723 return 0; 724} 725 726static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 727{ 728 kfree(hotplug_slot->info); 729 kfree(hotplug_slot); 730} 731 732static struct hotplug_slot_ops asus_hotplug_slot_ops = { 733 .owner = THIS_MODULE, 734 .get_adapter_status = asus_get_adapter_status, 735 .get_power_status = asus_get_adapter_status, 736}; 737 738static void asus_hotplug_work(struct work_struct *work) 739{ 740 struct asus_wmi *asus; 741 742 asus = container_of(work, struct asus_wmi, hotplug_work); 743 asus_rfkill_hotplug(asus); 744} 745 746static int asus_setup_pci_hotplug(struct asus_wmi *asus) 747{ 748 int ret = -ENOMEM; 749 struct pci_bus *bus = pci_find_bus(0, 1); 750 751 if (!bus) { 752 pr_err("Unable to find wifi PCI bus\n"); 753 return -ENODEV; 754 } 755 756 asus->hotplug_workqueue = 757 create_singlethread_workqueue("hotplug_workqueue"); 758 if (!asus->hotplug_workqueue) 759 goto error_workqueue; 760 761 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 762 763 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); 764 if (!asus->hotplug_slot) 765 goto error_slot; 766 767 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), 768 GFP_KERNEL); 769 if (!asus->hotplug_slot->info) 770 goto error_info; 771 772 asus->hotplug_slot->private = asus; 773 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug; 774 asus->hotplug_slot->ops = &asus_hotplug_slot_ops; 775 asus_get_adapter_status(asus->hotplug_slot, 776 &asus->hotplug_slot->info->adapter_status); 777 778 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi"); 779 if (ret) { 780 pr_err("Unable to register hotplug slot - %d\n", ret); 781 goto error_register; 782 } 783 784 return 0; 785 786error_register: 787 kfree(asus->hotplug_slot->info); 788error_info: 789 kfree(asus->hotplug_slot); 790 asus->hotplug_slot = NULL; 791error_slot: 792 destroy_workqueue(asus->hotplug_workqueue); 793error_workqueue: 794 return ret; 795} 796 797/* 798 * Rfkill devices 799 */ 800static int asus_rfkill_set(void *data, bool blocked) 801{ 802 struct asus_rfkill *priv = data; 803 u32 ctrl_param = !blocked; 804 u32 dev_id = priv->dev_id; 805 806 /* 807 * If the user bit is set, BIOS can't set and record the wlan status, 808 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 809 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 810 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 811 * while setting the wlan status through WMI. 812 * This is also the behavior that windows app will do. 813 */ 814 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 815 priv->asus->driver->wlan_ctrl_by_user) 816 dev_id = ASUS_WMI_DEVID_WLAN_LED; 817 818 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 819} 820 821static void asus_rfkill_query(struct rfkill *rfkill, void *data) 822{ 823 struct asus_rfkill *priv = data; 824 int result; 825 826 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 827 828 if (result < 0) 829 return; 830 831 rfkill_set_sw_state(priv->rfkill, !result); 832} 833 834static int asus_rfkill_wlan_set(void *data, bool blocked) 835{ 836 struct asus_rfkill *priv = data; 837 struct asus_wmi *asus = priv->asus; 838 int ret; 839 840 /* 841 * This handler is enabled only if hotplug is enabled. 842 * In this case, the asus_wmi_set_devstate() will 843 * trigger a wmi notification and we need to wait 844 * this call to finish before being able to call 845 * any wmi method 846 */ 847 mutex_lock(&asus->wmi_lock); 848 ret = asus_rfkill_set(data, blocked); 849 mutex_unlock(&asus->wmi_lock); 850 return ret; 851} 852 853static const struct rfkill_ops asus_rfkill_wlan_ops = { 854 .set_block = asus_rfkill_wlan_set, 855 .query = asus_rfkill_query, 856}; 857 858static const struct rfkill_ops asus_rfkill_ops = { 859 .set_block = asus_rfkill_set, 860 .query = asus_rfkill_query, 861}; 862 863static int asus_new_rfkill(struct asus_wmi *asus, 864 struct asus_rfkill *arfkill, 865 const char *name, enum rfkill_type type, int dev_id) 866{ 867 int result = asus_wmi_get_devstate_simple(asus, dev_id); 868 struct rfkill **rfkill = &arfkill->rfkill; 869 870 if (result < 0) 871 return result; 872 873 arfkill->dev_id = dev_id; 874 arfkill->asus = asus; 875 876 if (dev_id == ASUS_WMI_DEVID_WLAN && 877 asus->driver->quirks->hotplug_wireless) 878 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 879 &asus_rfkill_wlan_ops, arfkill); 880 else 881 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 882 &asus_rfkill_ops, arfkill); 883 884 if (!*rfkill) 885 return -EINVAL; 886 887 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 888 (asus->driver->quirks->wapf > 0)) 889 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 890 891 rfkill_init_sw_state(*rfkill, !result); 892 result = rfkill_register(*rfkill); 893 if (result) { 894 rfkill_destroy(*rfkill); 895 *rfkill = NULL; 896 return result; 897 } 898 return 0; 899} 900 901static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 902{ 903 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 904 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 905 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 906 if (asus->wlan.rfkill) { 907 rfkill_unregister(asus->wlan.rfkill); 908 rfkill_destroy(asus->wlan.rfkill); 909 asus->wlan.rfkill = NULL; 910 } 911 /* 912 * Refresh pci hotplug in case the rfkill state was changed after 913 * asus_unregister_rfkill_notifier() 914 */ 915 asus_rfkill_hotplug(asus); 916 if (asus->hotplug_slot) 917 pci_hp_deregister(asus->hotplug_slot); 918 if (asus->hotplug_workqueue) 919 destroy_workqueue(asus->hotplug_workqueue); 920 921 if (asus->bluetooth.rfkill) { 922 rfkill_unregister(asus->bluetooth.rfkill); 923 rfkill_destroy(asus->bluetooth.rfkill); 924 asus->bluetooth.rfkill = NULL; 925 } 926 if (asus->wimax.rfkill) { 927 rfkill_unregister(asus->wimax.rfkill); 928 rfkill_destroy(asus->wimax.rfkill); 929 asus->wimax.rfkill = NULL; 930 } 931 if (asus->wwan3g.rfkill) { 932 rfkill_unregister(asus->wwan3g.rfkill); 933 rfkill_destroy(asus->wwan3g.rfkill); 934 asus->wwan3g.rfkill = NULL; 935 } 936 if (asus->gps.rfkill) { 937 rfkill_unregister(asus->gps.rfkill); 938 rfkill_destroy(asus->gps.rfkill); 939 asus->gps.rfkill = NULL; 940 } 941 if (asus->uwb.rfkill) { 942 rfkill_unregister(asus->uwb.rfkill); 943 rfkill_destroy(asus->uwb.rfkill); 944 asus->uwb.rfkill = NULL; 945 } 946} 947 948static int asus_wmi_rfkill_init(struct asus_wmi *asus) 949{ 950 int result = 0; 951 952 mutex_init(&asus->hotplug_lock); 953 mutex_init(&asus->wmi_lock); 954 955 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 956 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 957 958 if (result && result != -ENODEV) 959 goto exit; 960 961 result = asus_new_rfkill(asus, &asus->bluetooth, 962 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 963 ASUS_WMI_DEVID_BLUETOOTH); 964 965 if (result && result != -ENODEV) 966 goto exit; 967 968 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 969 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 970 971 if (result && result != -ENODEV) 972 goto exit; 973 974 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 975 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 976 977 if (result && result != -ENODEV) 978 goto exit; 979 980 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 981 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 982 983 if (result && result != -ENODEV) 984 goto exit; 985 986 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 987 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 988 989 if (result && result != -ENODEV) 990 goto exit; 991 992 if (!asus->driver->quirks->hotplug_wireless) 993 goto exit; 994 995 result = asus_setup_pci_hotplug(asus); 996 /* 997 * If we get -EBUSY then something else is handling the PCI hotplug - 998 * don't fail in this case 999 */ 1000 if (result == -EBUSY) 1001 result = 0; 1002 1003 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1004 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1005 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1006 /* 1007 * Refresh pci hotplug in case the rfkill state was changed during 1008 * setup. 1009 */ 1010 asus_rfkill_hotplug(asus); 1011 1012exit: 1013 if (result && result != -ENODEV) 1014 asus_wmi_rfkill_exit(asus); 1015 1016 if (result == -ENODEV) 1017 result = 0; 1018 1019 return result; 1020} 1021 1022/* 1023 * Hwmon device 1024 */ 1025static ssize_t asus_hwmon_pwm1(struct device *dev, 1026 struct device_attribute *attr, 1027 char *buf) 1028{ 1029 struct asus_wmi *asus = dev_get_drvdata(dev); 1030 u32 value; 1031 int err; 1032 1033 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 1034 1035 if (err < 0) 1036 return err; 1037 1038 value &= 0xFF; 1039 1040 if (value == 1) /* Low Speed */ 1041 value = 85; 1042 else if (value == 2) 1043 value = 170; 1044 else if (value == 3) 1045 value = 255; 1046 else if (value != 0) { 1047 pr_err("Unknown fan speed %#x\n", value); 1048 value = -1; 1049 } 1050 1051 return sprintf(buf, "%d\n", value); 1052} 1053 1054static ssize_t asus_hwmon_temp1(struct device *dev, 1055 struct device_attribute *attr, 1056 char *buf) 1057{ 1058 struct asus_wmi *asus = dev_get_drvdata(dev); 1059 u32 value; 1060 int err; 1061 1062 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1063 1064 if (err < 0) 1065 return err; 1066 1067 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000; 1068 1069 return sprintf(buf, "%d\n", value); 1070} 1071 1072static DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL); 1073static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1074 1075static struct attribute *hwmon_attributes[] = { 1076 &dev_attr_pwm1.attr, 1077 &dev_attr_temp1_input.attr, 1078 NULL 1079}; 1080 1081static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1082 struct attribute *attr, int idx) 1083{ 1084 struct device *dev = container_of(kobj, struct device, kobj); 1085 struct platform_device *pdev = to_platform_device(dev->parent); 1086 struct asus_wmi *asus = platform_get_drvdata(pdev); 1087 bool ok = true; 1088 int dev_id = -1; 1089 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1090 1091 if (attr == &dev_attr_pwm1.attr) 1092 dev_id = ASUS_WMI_DEVID_FAN_CTRL; 1093 else if (attr == &dev_attr_temp1_input.attr) 1094 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL; 1095 1096 if (dev_id != -1) { 1097 int err = asus_wmi_get_devstate(asus, dev_id, &value); 1098 1099 if (err < 0) 1100 return 0; /* can't return negative here */ 1101 } 1102 1103 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) { 1104 /* 1105 * We need to find a better way, probably using sfun, 1106 * bits or spec ... 1107 * Currently we disable it if: 1108 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1109 * - reverved bits are non-zero 1110 * - sfun and presence bit are not set 1111 */ 1112 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1113 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))) 1114 ok = false; 1115 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) { 1116 /* If value is zero, something is clearly wrong */ 1117 if (value == 0) 1118 ok = false; 1119 } 1120 1121 return ok ? attr->mode : 0; 1122} 1123 1124static struct attribute_group hwmon_attribute_group = { 1125 .is_visible = asus_hwmon_sysfs_is_visible, 1126 .attrs = hwmon_attributes 1127}; 1128__ATTRIBUTE_GROUPS(hwmon_attribute); 1129 1130static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1131{ 1132 struct device *hwmon; 1133 1134 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev, 1135 "asus", asus, 1136 hwmon_attribute_groups); 1137 if (IS_ERR(hwmon)) { 1138 pr_err("Could not register asus hwmon device\n"); 1139 return PTR_ERR(hwmon); 1140 } 1141 return 0; 1142} 1143 1144/* 1145 * Backlight 1146 */ 1147static int read_backlight_power(struct asus_wmi *asus) 1148{ 1149 int ret; 1150 if (asus->driver->quirks->store_backlight_power) 1151 ret = !asus->driver->panel_power; 1152 else 1153 ret = asus_wmi_get_devstate_simple(asus, 1154 ASUS_WMI_DEVID_BACKLIGHT); 1155 1156 if (ret < 0) 1157 return ret; 1158 1159 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1160} 1161 1162static int read_brightness_max(struct asus_wmi *asus) 1163{ 1164 u32 retval; 1165 int err; 1166 1167 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1168 1169 if (err < 0) 1170 return err; 1171 1172 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1173 retval >>= 8; 1174 1175 if (!retval) 1176 return -ENODEV; 1177 1178 return retval; 1179} 1180 1181static int read_brightness(struct backlight_device *bd) 1182{ 1183 struct asus_wmi *asus = bl_get_data(bd); 1184 u32 retval; 1185 int err; 1186 1187 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1188 1189 if (err < 0) 1190 return err; 1191 1192 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1193} 1194 1195static u32 get_scalar_command(struct backlight_device *bd) 1196{ 1197 struct asus_wmi *asus = bl_get_data(bd); 1198 u32 ctrl_param = 0; 1199 1200 if ((asus->driver->brightness < bd->props.brightness) || 1201 bd->props.brightness == bd->props.max_brightness) 1202 ctrl_param = 0x00008001; 1203 else if ((asus->driver->brightness > bd->props.brightness) || 1204 bd->props.brightness == 0) 1205 ctrl_param = 0x00008000; 1206 1207 asus->driver->brightness = bd->props.brightness; 1208 1209 return ctrl_param; 1210} 1211 1212static int update_bl_status(struct backlight_device *bd) 1213{ 1214 struct asus_wmi *asus = bl_get_data(bd); 1215 u32 ctrl_param; 1216 int power, err = 0; 1217 1218 power = read_backlight_power(asus); 1219 if (power != -ENODEV && bd->props.power != power) { 1220 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1221 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1222 ctrl_param, NULL); 1223 if (asus->driver->quirks->store_backlight_power) 1224 asus->driver->panel_power = bd->props.power; 1225 1226 /* When using scalar brightness, updating the brightness 1227 * will mess with the backlight power */ 1228 if (asus->driver->quirks->scalar_panel_brightness) 1229 return err; 1230 } 1231 1232 if (asus->driver->quirks->scalar_panel_brightness) 1233 ctrl_param = get_scalar_command(bd); 1234 else 1235 ctrl_param = bd->props.brightness; 1236 1237 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1238 ctrl_param, NULL); 1239 1240 return err; 1241} 1242 1243static const struct backlight_ops asus_wmi_bl_ops = { 1244 .get_brightness = read_brightness, 1245 .update_status = update_bl_status, 1246}; 1247 1248static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1249{ 1250 struct backlight_device *bd = asus->backlight_device; 1251 int old = bd->props.brightness; 1252 int new = old; 1253 1254 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1255 new = code - NOTIFY_BRNUP_MIN + 1; 1256 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1257 new = code - NOTIFY_BRNDOWN_MIN; 1258 1259 bd->props.brightness = new; 1260 backlight_update_status(bd); 1261 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1262 1263 return old; 1264} 1265 1266static int asus_wmi_backlight_init(struct asus_wmi *asus) 1267{ 1268 struct backlight_device *bd; 1269 struct backlight_properties props; 1270 int max; 1271 int power; 1272 1273 max = read_brightness_max(asus); 1274 if (max < 0) 1275 return max; 1276 1277 power = read_backlight_power(asus); 1278 1279 if (power == -ENODEV) 1280 power = FB_BLANK_UNBLANK; 1281 else if (power < 0) 1282 return power; 1283 1284 memset(&props, 0, sizeof(struct backlight_properties)); 1285 props.type = BACKLIGHT_PLATFORM; 1286 props.max_brightness = max; 1287 bd = backlight_device_register(asus->driver->name, 1288 &asus->platform_device->dev, asus, 1289 &asus_wmi_bl_ops, &props); 1290 if (IS_ERR(bd)) { 1291 pr_err("Could not register backlight device\n"); 1292 return PTR_ERR(bd); 1293 } 1294 1295 asus->backlight_device = bd; 1296 1297 if (asus->driver->quirks->store_backlight_power) 1298 asus->driver->panel_power = power; 1299 1300 bd->props.brightness = read_brightness(bd); 1301 bd->props.power = power; 1302 backlight_update_status(bd); 1303 1304 asus->driver->brightness = bd->props.brightness; 1305 1306 return 0; 1307} 1308 1309static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1310{ 1311 backlight_device_unregister(asus->backlight_device); 1312 1313 asus->backlight_device = NULL; 1314} 1315 1316static int is_display_toggle(int code) 1317{ 1318 /* display toggle keys */ 1319 if ((code >= 0x61 && code <= 0x67) || 1320 (code >= 0x8c && code <= 0x93) || 1321 (code >= 0xa0 && code <= 0xa7) || 1322 (code >= 0xd0 && code <= 0xd5)) 1323 return 1; 1324 1325 return 0; 1326} 1327 1328static void asus_wmi_notify(u32 value, void *context) 1329{ 1330 struct asus_wmi *asus = context; 1331 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1332 union acpi_object *obj; 1333 acpi_status status; 1334 int code; 1335 int orig_code; 1336 unsigned int key_value = 1; 1337 bool autorelease = 1; 1338 1339 status = wmi_get_event_data(value, &response); 1340 if (status != AE_OK) { 1341 pr_err("bad event status 0x%x\n", status); 1342 return; 1343 } 1344 1345 obj = (union acpi_object *)response.pointer; 1346 1347 if (!obj || obj->type != ACPI_TYPE_INTEGER) 1348 goto exit; 1349 1350 code = obj->integer.value; 1351 orig_code = code; 1352 1353 if (asus->driver->key_filter) { 1354 asus->driver->key_filter(asus->driver, &code, &key_value, 1355 &autorelease); 1356 if (code == ASUS_WMI_KEY_IGNORE) 1357 goto exit; 1358 } 1359 1360 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1361 code = ASUS_WMI_BRN_UP; 1362 else if (code >= NOTIFY_BRNDOWN_MIN && 1363 code <= NOTIFY_BRNDOWN_MAX) 1364 code = ASUS_WMI_BRN_DOWN; 1365 1366 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 1367 if (!acpi_video_backlight_support()) { 1368 asus_wmi_backlight_notify(asus, orig_code); 1369 goto exit; 1370 } 1371 } 1372 1373 if (is_display_toggle(code) && 1374 asus->driver->quirks->no_display_toggle) 1375 goto exit; 1376 1377 if (!sparse_keymap_report_event(asus->inputdev, code, 1378 key_value, autorelease)) 1379 pr_info("Unknown key %x pressed\n", code); 1380 1381exit: 1382 kfree(obj); 1383} 1384 1385/* 1386 * Sys helpers 1387 */ 1388static int parse_arg(const char *buf, unsigned long count, int *val) 1389{ 1390 if (!count) 1391 return 0; 1392 if (sscanf(buf, "%i", val) != 1) 1393 return -EINVAL; 1394 return count; 1395} 1396 1397static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1398 const char *buf, size_t count) 1399{ 1400 u32 retval; 1401 int rv, err, value; 1402 1403 value = asus_wmi_get_devstate_simple(asus, devid); 1404 if (value == -ENODEV) /* Check device presence */ 1405 return value; 1406 1407 rv = parse_arg(buf, count, &value); 1408 err = asus_wmi_set_devstate(devid, value, &retval); 1409 1410 if (err < 0) 1411 return err; 1412 1413 return rv; 1414} 1415 1416static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1417{ 1418 int value = asus_wmi_get_devstate_simple(asus, devid); 1419 1420 if (value < 0) 1421 return value; 1422 1423 return sprintf(buf, "%d\n", value); 1424} 1425 1426#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1427 static ssize_t show_##_name(struct device *dev, \ 1428 struct device_attribute *attr, \ 1429 char *buf) \ 1430 { \ 1431 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1432 \ 1433 return show_sys_wmi(asus, _cm, buf); \ 1434 } \ 1435 static ssize_t store_##_name(struct device *dev, \ 1436 struct device_attribute *attr, \ 1437 const char *buf, size_t count) \ 1438 { \ 1439 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1440 \ 1441 return store_sys_wmi(asus, _cm, buf, count); \ 1442 } \ 1443 static struct device_attribute dev_attr_##_name = { \ 1444 .attr = { \ 1445 .name = __stringify(_name), \ 1446 .mode = _mode }, \ 1447 .show = show_##_name, \ 1448 .store = store_##_name, \ 1449 } 1450 1451ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1452ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1453ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1454ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1455 1456static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, 1457 const char *buf, size_t count) 1458{ 1459 int value, rv; 1460 1461 if (!count || sscanf(buf, "%i", &value) != 1) 1462 return -EINVAL; 1463 if (value < 0 || value > 2) 1464 return -EINVAL; 1465 1466 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1467 if (rv < 0) 1468 return rv; 1469 1470 return count; 1471} 1472 1473static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); 1474 1475static struct attribute *platform_attributes[] = { 1476 &dev_attr_cpufv.attr, 1477 &dev_attr_camera.attr, 1478 &dev_attr_cardr.attr, 1479 &dev_attr_touchpad.attr, 1480 &dev_attr_lid_resume.attr, 1481 NULL 1482}; 1483 1484static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1485 struct attribute *attr, int idx) 1486{ 1487 struct device *dev = container_of(kobj, struct device, kobj); 1488 struct platform_device *pdev = to_platform_device(dev); 1489 struct asus_wmi *asus = platform_get_drvdata(pdev); 1490 bool ok = true; 1491 int devid = -1; 1492 1493 if (attr == &dev_attr_camera.attr) 1494 devid = ASUS_WMI_DEVID_CAMERA; 1495 else if (attr == &dev_attr_cardr.attr) 1496 devid = ASUS_WMI_DEVID_CARDREADER; 1497 else if (attr == &dev_attr_touchpad.attr) 1498 devid = ASUS_WMI_DEVID_TOUCHPAD; 1499 else if (attr == &dev_attr_lid_resume.attr) 1500 devid = ASUS_WMI_DEVID_LID_RESUME; 1501 1502 if (devid != -1) 1503 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1504 1505 return ok ? attr->mode : 0; 1506} 1507 1508static struct attribute_group platform_attribute_group = { 1509 .is_visible = asus_sysfs_is_visible, 1510 .attrs = platform_attributes 1511}; 1512 1513static void asus_wmi_sysfs_exit(struct platform_device *device) 1514{ 1515 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1516} 1517 1518static int asus_wmi_sysfs_init(struct platform_device *device) 1519{ 1520 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1521} 1522 1523/* 1524 * Platform device 1525 */ 1526static int asus_wmi_platform_init(struct asus_wmi *asus) 1527{ 1528 int rv; 1529 1530 /* INIT enable hotkeys on some models */ 1531 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1532 pr_info("Initialization: %#x\n", rv); 1533 1534 /* We don't know yet what to do with this version... */ 1535 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1536 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 1537 asus->spec = rv; 1538 } 1539 1540 /* 1541 * The SFUN method probably allows the original driver to get the list 1542 * of features supported by a given model. For now, 0x0100 or 0x0800 1543 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1544 * The significance of others is yet to be found. 1545 */ 1546 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1547 pr_info("SFUN value: %#x\n", rv); 1548 asus->sfun = rv; 1549 } 1550 1551 /* 1552 * Eee PC and Notebooks seems to have different method_id for DSTS, 1553 * but it may also be related to the BIOS's SPEC. 1554 * Note, on most Eeepc, there is no way to check if a method exist 1555 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1556 * but once again, SPEC may probably be used for that kind of things. 1557 */ 1558 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1559 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1560 else 1561 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1562 1563 /* CWAP allow to define the behavior of the Fn+F2 key, 1564 * this method doesn't seems to be present on Eee PCs */ 1565 if (asus->driver->quirks->wapf >= 0) 1566 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1567 asus->driver->quirks->wapf, NULL); 1568 1569 return asus_wmi_sysfs_init(asus->platform_device); 1570} 1571 1572static void asus_wmi_platform_exit(struct asus_wmi *asus) 1573{ 1574 asus_wmi_sysfs_exit(asus->platform_device); 1575} 1576 1577/* 1578 * debugfs 1579 */ 1580struct asus_wmi_debugfs_node { 1581 struct asus_wmi *asus; 1582 char *name; 1583 int (*show) (struct seq_file *m, void *data); 1584}; 1585 1586static int show_dsts(struct seq_file *m, void *data) 1587{ 1588 struct asus_wmi *asus = m->private; 1589 int err; 1590 u32 retval = -1; 1591 1592 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1593 1594 if (err < 0) 1595 return err; 1596 1597 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1598 1599 return 0; 1600} 1601 1602static int show_devs(struct seq_file *m, void *data) 1603{ 1604 struct asus_wmi *asus = m->private; 1605 int err; 1606 u32 retval = -1; 1607 1608 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 1609 &retval); 1610 1611 if (err < 0) 1612 return err; 1613 1614 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 1615 asus->debug.ctrl_param, retval); 1616 1617 return 0; 1618} 1619 1620static int show_call(struct seq_file *m, void *data) 1621{ 1622 struct asus_wmi *asus = m->private; 1623 struct bios_args args = { 1624 .arg0 = asus->debug.dev_id, 1625 .arg1 = asus->debug.ctrl_param, 1626 }; 1627 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1628 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1629 union acpi_object *obj; 1630 acpi_status status; 1631 1632 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1633 1, asus->debug.method_id, 1634 &input, &output); 1635 1636 if (ACPI_FAILURE(status)) 1637 return -EIO; 1638 1639 obj = (union acpi_object *)output.pointer; 1640 if (obj && obj->type == ACPI_TYPE_INTEGER) 1641 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 1642 asus->debug.dev_id, asus->debug.ctrl_param, 1643 (u32) obj->integer.value); 1644 else 1645 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 1646 asus->debug.dev_id, asus->debug.ctrl_param, 1647 obj ? obj->type : -1); 1648 1649 kfree(obj); 1650 1651 return 0; 1652} 1653 1654static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 1655 {NULL, "devs", show_devs}, 1656 {NULL, "dsts", show_dsts}, 1657 {NULL, "call", show_call}, 1658}; 1659 1660static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 1661{ 1662 struct asus_wmi_debugfs_node *node = inode->i_private; 1663 1664 return single_open(file, node->show, node->asus); 1665} 1666 1667static const struct file_operations asus_wmi_debugfs_io_ops = { 1668 .owner = THIS_MODULE, 1669 .open = asus_wmi_debugfs_open, 1670 .read = seq_read, 1671 .llseek = seq_lseek, 1672 .release = single_release, 1673}; 1674 1675static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 1676{ 1677 debugfs_remove_recursive(asus->debug.root); 1678} 1679 1680static int asus_wmi_debugfs_init(struct asus_wmi *asus) 1681{ 1682 struct dentry *dent; 1683 int i; 1684 1685 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 1686 if (!asus->debug.root) { 1687 pr_err("failed to create debugfs directory\n"); 1688 goto error_debugfs; 1689 } 1690 1691 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 1692 asus->debug.root, &asus->debug.method_id); 1693 if (!dent) 1694 goto error_debugfs; 1695 1696 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 1697 asus->debug.root, &asus->debug.dev_id); 1698 if (!dent) 1699 goto error_debugfs; 1700 1701 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 1702 asus->debug.root, &asus->debug.ctrl_param); 1703 if (!dent) 1704 goto error_debugfs; 1705 1706 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 1707 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 1708 1709 node->asus = asus; 1710 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 1711 asus->debug.root, node, 1712 &asus_wmi_debugfs_io_ops); 1713 if (!dent) { 1714 pr_err("failed to create debug file: %s\n", node->name); 1715 goto error_debugfs; 1716 } 1717 } 1718 1719 return 0; 1720 1721error_debugfs: 1722 asus_wmi_debugfs_exit(asus); 1723 return -ENOMEM; 1724} 1725 1726/* 1727 * WMI Driver 1728 */ 1729static int asus_wmi_add(struct platform_device *pdev) 1730{ 1731 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 1732 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 1733 struct asus_wmi *asus; 1734 const char *chassis_type; 1735 acpi_status status; 1736 int err; 1737 u32 result; 1738 1739 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 1740 if (!asus) 1741 return -ENOMEM; 1742 1743 asus->driver = wdrv; 1744 asus->platform_device = pdev; 1745 wdrv->platform_device = pdev; 1746 platform_set_drvdata(asus->platform_device, asus); 1747 1748 if (wdrv->detect_quirks) 1749 wdrv->detect_quirks(asus->driver); 1750 1751 err = asus_wmi_platform_init(asus); 1752 if (err) 1753 goto fail_platform; 1754 1755 err = asus_wmi_input_init(asus); 1756 if (err) 1757 goto fail_input; 1758 1759 err = asus_wmi_hwmon_init(asus); 1760 if (err) 1761 goto fail_hwmon; 1762 1763 err = asus_wmi_led_init(asus); 1764 if (err) 1765 goto fail_leds; 1766 1767 err = asus_wmi_rfkill_init(asus); 1768 if (err) 1769 goto fail_rfkill; 1770 1771 /* Some Asus desktop boards export an acpi-video backlight interface, 1772 stop this from showing up */ 1773 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 1774 if (chassis_type && !strcmp(chassis_type, "3")) 1775 acpi_video_dmi_promote_vendor(); 1776 if (asus->driver->quirks->wmi_backlight_power) 1777 acpi_video_dmi_promote_vendor(); 1778 if (!acpi_video_backlight_support()) { 1779 pr_info("Disabling ACPI video driver\n"); 1780 acpi_video_unregister(); 1781 err = asus_wmi_backlight_init(asus); 1782 if (err && err != -ENODEV) 1783 goto fail_backlight; 1784 } else 1785 pr_info("Backlight controlled by ACPI video driver\n"); 1786 1787 status = wmi_install_notify_handler(asus->driver->event_guid, 1788 asus_wmi_notify, asus); 1789 if (ACPI_FAILURE(status)) { 1790 pr_err("Unable to register notify handler - %d\n", status); 1791 err = -ENODEV; 1792 goto fail_wmi_handler; 1793 } 1794 1795 err = asus_wmi_debugfs_init(asus); 1796 if (err) 1797 goto fail_debugfs; 1798 1799 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 1800 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 1801 asus->driver->wlan_ctrl_by_user = 1; 1802 1803 return 0; 1804 1805fail_debugfs: 1806 wmi_remove_notify_handler(asus->driver->event_guid); 1807fail_wmi_handler: 1808 asus_wmi_backlight_exit(asus); 1809fail_backlight: 1810 asus_wmi_rfkill_exit(asus); 1811fail_rfkill: 1812 asus_wmi_led_exit(asus); 1813fail_leds: 1814fail_hwmon: 1815 asus_wmi_input_exit(asus); 1816fail_input: 1817 asus_wmi_platform_exit(asus); 1818fail_platform: 1819 kfree(asus); 1820 return err; 1821} 1822 1823static int asus_wmi_remove(struct platform_device *device) 1824{ 1825 struct asus_wmi *asus; 1826 1827 asus = platform_get_drvdata(device); 1828 wmi_remove_notify_handler(asus->driver->event_guid); 1829 asus_wmi_backlight_exit(asus); 1830 asus_wmi_input_exit(asus); 1831 asus_wmi_led_exit(asus); 1832 asus_wmi_rfkill_exit(asus); 1833 asus_wmi_debugfs_exit(asus); 1834 asus_wmi_platform_exit(asus); 1835 1836 kfree(asus); 1837 return 0; 1838} 1839 1840/* 1841 * Platform driver - hibernate/resume callbacks 1842 */ 1843static int asus_hotk_thaw(struct device *device) 1844{ 1845 struct asus_wmi *asus = dev_get_drvdata(device); 1846 1847 if (asus->wlan.rfkill) { 1848 bool wlan; 1849 1850 /* 1851 * Work around bios bug - acpi _PTS turns off the wireless led 1852 * during suspend. Normally it restores it on resume, but 1853 * we should kick it ourselves in case hibernation is aborted. 1854 */ 1855 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 1856 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 1857 } 1858 1859 return 0; 1860} 1861 1862static int asus_hotk_restore(struct device *device) 1863{ 1864 struct asus_wmi *asus = dev_get_drvdata(device); 1865 int bl; 1866 1867 /* Refresh both wlan rfkill state and pci hotplug */ 1868 if (asus->wlan.rfkill) 1869 asus_rfkill_hotplug(asus); 1870 1871 if (asus->bluetooth.rfkill) { 1872 bl = !asus_wmi_get_devstate_simple(asus, 1873 ASUS_WMI_DEVID_BLUETOOTH); 1874 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 1875 } 1876 if (asus->wimax.rfkill) { 1877 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 1878 rfkill_set_sw_state(asus->wimax.rfkill, bl); 1879 } 1880 if (asus->wwan3g.rfkill) { 1881 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 1882 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 1883 } 1884 if (asus->gps.rfkill) { 1885 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 1886 rfkill_set_sw_state(asus->gps.rfkill, bl); 1887 } 1888 if (asus->uwb.rfkill) { 1889 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 1890 rfkill_set_sw_state(asus->uwb.rfkill, bl); 1891 } 1892 1893 return 0; 1894} 1895 1896static const struct dev_pm_ops asus_pm_ops = { 1897 .thaw = asus_hotk_thaw, 1898 .restore = asus_hotk_restore, 1899}; 1900 1901static int asus_wmi_probe(struct platform_device *pdev) 1902{ 1903 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 1904 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 1905 int ret; 1906 1907 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 1908 pr_warn("Management GUID not found\n"); 1909 return -ENODEV; 1910 } 1911 1912 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 1913 pr_warn("Event GUID not found\n"); 1914 return -ENODEV; 1915 } 1916 1917 if (wdrv->probe) { 1918 ret = wdrv->probe(pdev); 1919 if (ret) 1920 return ret; 1921 } 1922 1923 return asus_wmi_add(pdev); 1924} 1925 1926static bool used; 1927 1928int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 1929{ 1930 struct platform_driver *platform_driver; 1931 struct platform_device *platform_device; 1932 1933 if (used) 1934 return -EBUSY; 1935 1936 platform_driver = &driver->platform_driver; 1937 platform_driver->remove = asus_wmi_remove; 1938 platform_driver->driver.owner = driver->owner; 1939 platform_driver->driver.name = driver->name; 1940 platform_driver->driver.pm = &asus_pm_ops; 1941 1942 platform_device = platform_create_bundle(platform_driver, 1943 asus_wmi_probe, 1944 NULL, 0, NULL, 0); 1945 if (IS_ERR(platform_device)) 1946 return PTR_ERR(platform_device); 1947 1948 used = true; 1949 return 0; 1950} 1951EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 1952 1953void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 1954{ 1955 platform_device_unregister(driver->platform_device); 1956 platform_driver_unregister(&driver->platform_driver); 1957 used = false; 1958} 1959EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 1960 1961static int __init asus_wmi_init(void) 1962{ 1963 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 1964 pr_info("Asus Management GUID not found\n"); 1965 return -ENODEV; 1966 } 1967 1968 pr_info("ASUS WMI generic driver loaded\n"); 1969 return 0; 1970} 1971 1972static void __exit asus_wmi_exit(void) 1973{ 1974 pr_info("ASUS WMI generic driver unloaded\n"); 1975} 1976 1977module_init(asus_wmi_init); 1978module_exit(asus_wmi_exit); 1979