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 54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, " 55 "Yong Wang <yong.y.wang@intel.com>"); 56 MODULE_DESCRIPTION("Asus Generic WMI Driver"); 57 MODULE_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 152 153 struct 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 */ 167 struct asus_wmi_debug { 168 struct dentry *root; 169 u32 method_id; 170 u32 dev_id; 171 u32 ctrl_param; 172 }; 173 174 struct asus_rfkill { 175 struct asus_wmi *asus; 176 struct rfkill *rfkill; 177 u32 dev_id; 178 }; 179 180 struct 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 }; 217 218 static 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; 241 242 err_free_keymap: 243 sparse_keymap_free(asus->inputdev); 244 err_free_dev: 245 input_free_device(asus->inputdev); 246 return err; 247 } 248 249 static 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 } 258 259 static 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); 286 287 exit: 288 if (ACPI_FAILURE(status)) 289 return -EIO; 290 291 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 292 return -ENODEV; 293 294 return 0; 295 } 296 297 static 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 } 301 302 static 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 */ 310 static 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 } 331 332 static 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 */ 347 static 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 } 357 358 static 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 } 368 369 static int read_tpd_led_state(struct asus_wmi *asus) 370 { 371 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 372 } 373 374 static 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 } 382 383 static 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 } 399 400 static 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 } 427 428 static 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 } 443 444 static 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 } 458 459 static 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 } 467 468 static 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 } 476 477 static 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 } 487 488 static 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 } 498 499 static 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 } 509 510 static 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 } 521 522 static 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 == 4)) { 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 } 572 573 error: 574 if (rv) 575 asus_wmi_led_exit(asus); 576 577 return rv; 578 } 579 580 581 /* 582 * PCI hotplug (for wlan rfkill) 583 */ 584 static 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 } 592 593 static 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 } 654 655 out_unlock: 656 pci_unlock_rescan_remove(); 657 mutex_unlock(&asus->hotplug_lock); 658 } 659 660 static 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 } 676 677 static 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 } 695 696 static 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 } 712 713 static 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 } 725 726 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 727 { 728 kfree(hotplug_slot->info); 729 kfree(hotplug_slot); 730 } 731 732 static 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 }; 737 738 static 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 } 745 746 static 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; 785 786 error_register: 787 kfree(asus->hotplug_slot->info); 788 error_info: 789 kfree(asus->hotplug_slot); 790 asus->hotplug_slot = NULL; 791 error_slot: 792 destroy_workqueue(asus->hotplug_workqueue); 793 error_workqueue: 794 return ret; 795 } 796 797 /* 798 * Rfkill devices 799 */ 800 static 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 } 820 821 static 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 } 833 834 static 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 } 852 853 static const struct rfkill_ops asus_rfkill_wlan_ops = { 854 .set_block = asus_rfkill_wlan_set, 855 .query = asus_rfkill_query, 856 }; 857 858 static const struct rfkill_ops asus_rfkill_ops = { 859 .set_block = asus_rfkill_set, 860 .query = asus_rfkill_query, 861 }; 862 863 static 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 == 4)) 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 } 900 901 static 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 } 947 948 static 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 1012 exit: 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 */ 1025 static 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 1054 static 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 1072 static DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL); 1073 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1074 1075 static struct attribute *hwmon_attributes[] = { 1076 &dev_attr_pwm1.attr, 1077 &dev_attr_temp1_input.attr, 1078 NULL 1079 }; 1080 1081 static 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 1124 static 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 1130 static 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 */ 1147 static 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 1162 static 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 1181 static 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 1195 static 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 1212 static 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 1243 static const struct backlight_ops asus_wmi_bl_ops = { 1244 .get_brightness = read_brightness, 1245 .update_status = update_bl_status, 1246 }; 1247 1248 static 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 1266 static 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 1309 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1310 { 1311 if (asus->backlight_device) 1312 backlight_device_unregister(asus->backlight_device); 1313 1314 asus->backlight_device = NULL; 1315 } 1316 1317 static int is_display_toggle(int code) 1318 { 1319 /* display toggle keys */ 1320 if ((code >= 0x61 && code <= 0x67) || 1321 (code >= 0x8c && code <= 0x93) || 1322 (code >= 0xa0 && code <= 0xa7) || 1323 (code >= 0xd0 && code <= 0xd5)) 1324 return 1; 1325 1326 return 0; 1327 } 1328 1329 static void asus_wmi_notify(u32 value, void *context) 1330 { 1331 struct asus_wmi *asus = context; 1332 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1333 union acpi_object *obj; 1334 acpi_status status; 1335 int code; 1336 int orig_code; 1337 unsigned int key_value = 1; 1338 bool autorelease = 1; 1339 1340 status = wmi_get_event_data(value, &response); 1341 if (status != AE_OK) { 1342 pr_err("bad event status 0x%x\n", status); 1343 return; 1344 } 1345 1346 obj = (union acpi_object *)response.pointer; 1347 1348 if (!obj || obj->type != ACPI_TYPE_INTEGER) 1349 goto exit; 1350 1351 code = obj->integer.value; 1352 orig_code = code; 1353 1354 if (asus->driver->key_filter) { 1355 asus->driver->key_filter(asus->driver, &code, &key_value, 1356 &autorelease); 1357 if (code == ASUS_WMI_KEY_IGNORE) 1358 goto exit; 1359 } 1360 1361 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1362 code = ASUS_WMI_BRN_UP; 1363 else if (code >= NOTIFY_BRNDOWN_MIN && 1364 code <= NOTIFY_BRNDOWN_MAX) 1365 code = ASUS_WMI_BRN_DOWN; 1366 1367 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 1368 if (!acpi_video_backlight_support()) { 1369 asus_wmi_backlight_notify(asus, orig_code); 1370 goto exit; 1371 } 1372 } 1373 1374 if (is_display_toggle(code) && 1375 asus->driver->quirks->no_display_toggle) 1376 goto exit; 1377 1378 if (!sparse_keymap_report_event(asus->inputdev, code, 1379 key_value, autorelease)) 1380 pr_info("Unknown key %x pressed\n", code); 1381 1382 exit: 1383 kfree(obj); 1384 } 1385 1386 /* 1387 * Sys helpers 1388 */ 1389 static int parse_arg(const char *buf, unsigned long count, int *val) 1390 { 1391 if (!count) 1392 return 0; 1393 if (sscanf(buf, "%i", val) != 1) 1394 return -EINVAL; 1395 return count; 1396 } 1397 1398 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1399 const char *buf, size_t count) 1400 { 1401 u32 retval; 1402 int rv, err, value; 1403 1404 value = asus_wmi_get_devstate_simple(asus, devid); 1405 if (value == -ENODEV) /* Check device presence */ 1406 return value; 1407 1408 rv = parse_arg(buf, count, &value); 1409 err = asus_wmi_set_devstate(devid, value, &retval); 1410 1411 if (err < 0) 1412 return err; 1413 1414 return rv; 1415 } 1416 1417 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1418 { 1419 int value = asus_wmi_get_devstate_simple(asus, devid); 1420 1421 if (value < 0) 1422 return value; 1423 1424 return sprintf(buf, "%d\n", value); 1425 } 1426 1427 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1428 static ssize_t show_##_name(struct device *dev, \ 1429 struct device_attribute *attr, \ 1430 char *buf) \ 1431 { \ 1432 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1433 \ 1434 return show_sys_wmi(asus, _cm, buf); \ 1435 } \ 1436 static ssize_t store_##_name(struct device *dev, \ 1437 struct device_attribute *attr, \ 1438 const char *buf, size_t count) \ 1439 { \ 1440 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1441 \ 1442 return store_sys_wmi(asus, _cm, buf, count); \ 1443 } \ 1444 static struct device_attribute dev_attr_##_name = { \ 1445 .attr = { \ 1446 .name = __stringify(_name), \ 1447 .mode = _mode }, \ 1448 .show = show_##_name, \ 1449 .store = store_##_name, \ 1450 } 1451 1452 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1453 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1454 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1455 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1456 1457 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, 1458 const char *buf, size_t count) 1459 { 1460 int value, rv; 1461 1462 if (!count || sscanf(buf, "%i", &value) != 1) 1463 return -EINVAL; 1464 if (value < 0 || value > 2) 1465 return -EINVAL; 1466 1467 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1468 if (rv < 0) 1469 return rv; 1470 1471 return count; 1472 } 1473 1474 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); 1475 1476 static struct attribute *platform_attributes[] = { 1477 &dev_attr_cpufv.attr, 1478 &dev_attr_camera.attr, 1479 &dev_attr_cardr.attr, 1480 &dev_attr_touchpad.attr, 1481 &dev_attr_lid_resume.attr, 1482 NULL 1483 }; 1484 1485 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1486 struct attribute *attr, int idx) 1487 { 1488 struct device *dev = container_of(kobj, struct device, kobj); 1489 struct platform_device *pdev = to_platform_device(dev); 1490 struct asus_wmi *asus = platform_get_drvdata(pdev); 1491 bool ok = true; 1492 int devid = -1; 1493 1494 if (attr == &dev_attr_camera.attr) 1495 devid = ASUS_WMI_DEVID_CAMERA; 1496 else if (attr == &dev_attr_cardr.attr) 1497 devid = ASUS_WMI_DEVID_CARDREADER; 1498 else if (attr == &dev_attr_touchpad.attr) 1499 devid = ASUS_WMI_DEVID_TOUCHPAD; 1500 else if (attr == &dev_attr_lid_resume.attr) 1501 devid = ASUS_WMI_DEVID_LID_RESUME; 1502 1503 if (devid != -1) 1504 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1505 1506 return ok ? attr->mode : 0; 1507 } 1508 1509 static struct attribute_group platform_attribute_group = { 1510 .is_visible = asus_sysfs_is_visible, 1511 .attrs = platform_attributes 1512 }; 1513 1514 static void asus_wmi_sysfs_exit(struct platform_device *device) 1515 { 1516 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1517 } 1518 1519 static int asus_wmi_sysfs_init(struct platform_device *device) 1520 { 1521 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1522 } 1523 1524 /* 1525 * Platform device 1526 */ 1527 static int asus_wmi_platform_init(struct asus_wmi *asus) 1528 { 1529 int rv; 1530 1531 /* INIT enable hotkeys on some models */ 1532 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1533 pr_info("Initialization: %#x\n", rv); 1534 1535 /* We don't know yet what to do with this version... */ 1536 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1537 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 1538 asus->spec = rv; 1539 } 1540 1541 /* 1542 * The SFUN method probably allows the original driver to get the list 1543 * of features supported by a given model. For now, 0x0100 or 0x0800 1544 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1545 * The significance of others is yet to be found. 1546 */ 1547 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1548 pr_info("SFUN value: %#x\n", rv); 1549 asus->sfun = rv; 1550 } 1551 1552 /* 1553 * Eee PC and Notebooks seems to have different method_id for DSTS, 1554 * but it may also be related to the BIOS's SPEC. 1555 * Note, on most Eeepc, there is no way to check if a method exist 1556 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1557 * but once again, SPEC may probably be used for that kind of things. 1558 */ 1559 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1560 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1561 else 1562 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1563 1564 /* CWAP allow to define the behavior of the Fn+F2 key, 1565 * this method doesn't seems to be present on Eee PCs */ 1566 if (asus->driver->quirks->wapf >= 0) 1567 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1568 asus->driver->quirks->wapf, NULL); 1569 1570 return asus_wmi_sysfs_init(asus->platform_device); 1571 } 1572 1573 static void asus_wmi_platform_exit(struct asus_wmi *asus) 1574 { 1575 asus_wmi_sysfs_exit(asus->platform_device); 1576 } 1577 1578 /* 1579 * debugfs 1580 */ 1581 struct asus_wmi_debugfs_node { 1582 struct asus_wmi *asus; 1583 char *name; 1584 int (*show) (struct seq_file *m, void *data); 1585 }; 1586 1587 static int show_dsts(struct seq_file *m, void *data) 1588 { 1589 struct asus_wmi *asus = m->private; 1590 int err; 1591 u32 retval = -1; 1592 1593 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1594 1595 if (err < 0) 1596 return err; 1597 1598 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1599 1600 return 0; 1601 } 1602 1603 static int show_devs(struct seq_file *m, void *data) 1604 { 1605 struct asus_wmi *asus = m->private; 1606 int err; 1607 u32 retval = -1; 1608 1609 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 1610 &retval); 1611 1612 if (err < 0) 1613 return err; 1614 1615 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 1616 asus->debug.ctrl_param, retval); 1617 1618 return 0; 1619 } 1620 1621 static int show_call(struct seq_file *m, void *data) 1622 { 1623 struct asus_wmi *asus = m->private; 1624 struct bios_args args = { 1625 .arg0 = asus->debug.dev_id, 1626 .arg1 = asus->debug.ctrl_param, 1627 }; 1628 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1629 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1630 union acpi_object *obj; 1631 acpi_status status; 1632 1633 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1634 1, asus->debug.method_id, 1635 &input, &output); 1636 1637 if (ACPI_FAILURE(status)) 1638 return -EIO; 1639 1640 obj = (union acpi_object *)output.pointer; 1641 if (obj && obj->type == ACPI_TYPE_INTEGER) 1642 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 1643 asus->debug.dev_id, asus->debug.ctrl_param, 1644 (u32) obj->integer.value); 1645 else 1646 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 1647 asus->debug.dev_id, asus->debug.ctrl_param, 1648 obj ? obj->type : -1); 1649 1650 kfree(obj); 1651 1652 return 0; 1653 } 1654 1655 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 1656 {NULL, "devs", show_devs}, 1657 {NULL, "dsts", show_dsts}, 1658 {NULL, "call", show_call}, 1659 }; 1660 1661 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 1662 { 1663 struct asus_wmi_debugfs_node *node = inode->i_private; 1664 1665 return single_open(file, node->show, node->asus); 1666 } 1667 1668 static const struct file_operations asus_wmi_debugfs_io_ops = { 1669 .owner = THIS_MODULE, 1670 .open = asus_wmi_debugfs_open, 1671 .read = seq_read, 1672 .llseek = seq_lseek, 1673 .release = single_release, 1674 }; 1675 1676 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 1677 { 1678 debugfs_remove_recursive(asus->debug.root); 1679 } 1680 1681 static int asus_wmi_debugfs_init(struct asus_wmi *asus) 1682 { 1683 struct dentry *dent; 1684 int i; 1685 1686 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 1687 if (!asus->debug.root) { 1688 pr_err("failed to create debugfs directory\n"); 1689 goto error_debugfs; 1690 } 1691 1692 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 1693 asus->debug.root, &asus->debug.method_id); 1694 if (!dent) 1695 goto error_debugfs; 1696 1697 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 1698 asus->debug.root, &asus->debug.dev_id); 1699 if (!dent) 1700 goto error_debugfs; 1701 1702 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 1703 asus->debug.root, &asus->debug.ctrl_param); 1704 if (!dent) 1705 goto error_debugfs; 1706 1707 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 1708 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 1709 1710 node->asus = asus; 1711 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 1712 asus->debug.root, node, 1713 &asus_wmi_debugfs_io_ops); 1714 if (!dent) { 1715 pr_err("failed to create debug file: %s\n", node->name); 1716 goto error_debugfs; 1717 } 1718 } 1719 1720 return 0; 1721 1722 error_debugfs: 1723 asus_wmi_debugfs_exit(asus); 1724 return -ENOMEM; 1725 } 1726 1727 /* 1728 * WMI Driver 1729 */ 1730 static int asus_wmi_add(struct platform_device *pdev) 1731 { 1732 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 1733 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 1734 struct asus_wmi *asus; 1735 const char *chassis_type; 1736 acpi_status status; 1737 int err; 1738 u32 result; 1739 1740 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 1741 if (!asus) 1742 return -ENOMEM; 1743 1744 asus->driver = wdrv; 1745 asus->platform_device = pdev; 1746 wdrv->platform_device = pdev; 1747 platform_set_drvdata(asus->platform_device, asus); 1748 1749 if (wdrv->detect_quirks) 1750 wdrv->detect_quirks(asus->driver); 1751 1752 err = asus_wmi_platform_init(asus); 1753 if (err) 1754 goto fail_platform; 1755 1756 err = asus_wmi_input_init(asus); 1757 if (err) 1758 goto fail_input; 1759 1760 err = asus_wmi_hwmon_init(asus); 1761 if (err) 1762 goto fail_hwmon; 1763 1764 err = asus_wmi_led_init(asus); 1765 if (err) 1766 goto fail_leds; 1767 1768 err = asus_wmi_rfkill_init(asus); 1769 if (err) 1770 goto fail_rfkill; 1771 1772 /* Some Asus desktop boards export an acpi-video backlight interface, 1773 stop this from showing up */ 1774 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 1775 if (chassis_type && !strcmp(chassis_type, "3")) 1776 acpi_video_dmi_promote_vendor(); 1777 if (asus->driver->quirks->wmi_backlight_power) 1778 acpi_video_dmi_promote_vendor(); 1779 if (!acpi_video_backlight_support()) { 1780 pr_info("Disabling ACPI video driver\n"); 1781 acpi_video_unregister(); 1782 err = asus_wmi_backlight_init(asus); 1783 if (err && err != -ENODEV) 1784 goto fail_backlight; 1785 } else 1786 pr_info("Backlight controlled by ACPI video driver\n"); 1787 1788 status = wmi_install_notify_handler(asus->driver->event_guid, 1789 asus_wmi_notify, asus); 1790 if (ACPI_FAILURE(status)) { 1791 pr_err("Unable to register notify handler - %d\n", status); 1792 err = -ENODEV; 1793 goto fail_wmi_handler; 1794 } 1795 1796 err = asus_wmi_debugfs_init(asus); 1797 if (err) 1798 goto fail_debugfs; 1799 1800 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 1801 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 1802 asus->driver->wlan_ctrl_by_user = 1; 1803 1804 return 0; 1805 1806 fail_debugfs: 1807 wmi_remove_notify_handler(asus->driver->event_guid); 1808 fail_wmi_handler: 1809 asus_wmi_backlight_exit(asus); 1810 fail_backlight: 1811 asus_wmi_rfkill_exit(asus); 1812 fail_rfkill: 1813 asus_wmi_led_exit(asus); 1814 fail_leds: 1815 fail_hwmon: 1816 asus_wmi_input_exit(asus); 1817 fail_input: 1818 asus_wmi_platform_exit(asus); 1819 fail_platform: 1820 kfree(asus); 1821 return err; 1822 } 1823 1824 static int asus_wmi_remove(struct platform_device *device) 1825 { 1826 struct asus_wmi *asus; 1827 1828 asus = platform_get_drvdata(device); 1829 wmi_remove_notify_handler(asus->driver->event_guid); 1830 asus_wmi_backlight_exit(asus); 1831 asus_wmi_input_exit(asus); 1832 asus_wmi_led_exit(asus); 1833 asus_wmi_rfkill_exit(asus); 1834 asus_wmi_debugfs_exit(asus); 1835 asus_wmi_platform_exit(asus); 1836 1837 kfree(asus); 1838 return 0; 1839 } 1840 1841 /* 1842 * Platform driver - hibernate/resume callbacks 1843 */ 1844 static int asus_hotk_thaw(struct device *device) 1845 { 1846 struct asus_wmi *asus = dev_get_drvdata(device); 1847 1848 if (asus->wlan.rfkill) { 1849 bool wlan; 1850 1851 /* 1852 * Work around bios bug - acpi _PTS turns off the wireless led 1853 * during suspend. Normally it restores it on resume, but 1854 * we should kick it ourselves in case hibernation is aborted. 1855 */ 1856 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 1857 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 1858 } 1859 1860 return 0; 1861 } 1862 1863 static int asus_hotk_restore(struct device *device) 1864 { 1865 struct asus_wmi *asus = dev_get_drvdata(device); 1866 int bl; 1867 1868 /* Refresh both wlan rfkill state and pci hotplug */ 1869 if (asus->wlan.rfkill) 1870 asus_rfkill_hotplug(asus); 1871 1872 if (asus->bluetooth.rfkill) { 1873 bl = !asus_wmi_get_devstate_simple(asus, 1874 ASUS_WMI_DEVID_BLUETOOTH); 1875 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 1876 } 1877 if (asus->wimax.rfkill) { 1878 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 1879 rfkill_set_sw_state(asus->wimax.rfkill, bl); 1880 } 1881 if (asus->wwan3g.rfkill) { 1882 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 1883 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 1884 } 1885 if (asus->gps.rfkill) { 1886 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 1887 rfkill_set_sw_state(asus->gps.rfkill, bl); 1888 } 1889 if (asus->uwb.rfkill) { 1890 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 1891 rfkill_set_sw_state(asus->uwb.rfkill, bl); 1892 } 1893 1894 return 0; 1895 } 1896 1897 static const struct dev_pm_ops asus_pm_ops = { 1898 .thaw = asus_hotk_thaw, 1899 .restore = asus_hotk_restore, 1900 }; 1901 1902 static int asus_wmi_probe(struct platform_device *pdev) 1903 { 1904 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 1905 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 1906 int ret; 1907 1908 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 1909 pr_warn("Management GUID not found\n"); 1910 return -ENODEV; 1911 } 1912 1913 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 1914 pr_warn("Event GUID not found\n"); 1915 return -ENODEV; 1916 } 1917 1918 if (wdrv->probe) { 1919 ret = wdrv->probe(pdev); 1920 if (ret) 1921 return ret; 1922 } 1923 1924 return asus_wmi_add(pdev); 1925 } 1926 1927 static bool used; 1928 1929 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 1930 { 1931 struct platform_driver *platform_driver; 1932 struct platform_device *platform_device; 1933 1934 if (used) 1935 return -EBUSY; 1936 1937 platform_driver = &driver->platform_driver; 1938 platform_driver->remove = asus_wmi_remove; 1939 platform_driver->driver.owner = driver->owner; 1940 platform_driver->driver.name = driver->name; 1941 platform_driver->driver.pm = &asus_pm_ops; 1942 1943 platform_device = platform_create_bundle(platform_driver, 1944 asus_wmi_probe, 1945 NULL, 0, NULL, 0); 1946 if (IS_ERR(platform_device)) 1947 return PTR_ERR(platform_device); 1948 1949 used = true; 1950 return 0; 1951 } 1952 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 1953 1954 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 1955 { 1956 platform_device_unregister(driver->platform_device); 1957 platform_driver_unregister(&driver->platform_driver); 1958 used = false; 1959 } 1960 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 1961 1962 static int __init asus_wmi_init(void) 1963 { 1964 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 1965 pr_info("Asus Management GUID not found\n"); 1966 return -ENODEV; 1967 } 1968 1969 pr_info("ASUS WMI generic driver loaded\n"); 1970 return 0; 1971 } 1972 1973 static void __exit asus_wmi_exit(void) 1974 { 1975 pr_info("ASUS WMI generic driver unloaded\n"); 1976 } 1977 1978 module_init(asus_wmi_init); 1979 module_exit(asus_wmi_exit); 1980