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 <acpi/acpi_bus.h> 49 #include <acpi/acpi_drivers.h> 50 #ifdef CONFIG_ACPI_VIDEO 51 #include <acpi/video.h> 52 #endif 53 54 #include "asus-wmi.h" 55 56 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, " 57 "Yong Wang <yong.y.wang@intel.com>"); 58 MODULE_DESCRIPTION("Asus Generic WMI Driver"); 59 MODULE_LICENSE("GPL"); 60 61 #define to_platform_driver(drv) \ 62 (container_of((drv), struct platform_driver, driver)) 63 64 #define to_asus_wmi_driver(pdrv) \ 65 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 66 67 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 68 69 #define NOTIFY_BRNUP_MIN 0x11 70 #define NOTIFY_BRNUP_MAX 0x1f 71 #define NOTIFY_BRNDOWN_MIN 0x20 72 #define NOTIFY_BRNDOWN_MAX 0x2e 73 #define NOTIFY_KBD_BRTUP 0xc4 74 #define NOTIFY_KBD_BRTDWN 0xc5 75 76 /* WMI Methods */ 77 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */ 78 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */ 79 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */ 80 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */ 81 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */ 82 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */ 83 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */ 84 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */ 85 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */ 86 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */ 87 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */ 88 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */ 89 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/ 90 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */ 91 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */ 92 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */ 93 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ 94 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ 95 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ 96 97 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE 98 99 /* Wireless */ 100 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 101 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 102 #define ASUS_WMI_DEVID_CWAP 0x00010003 103 #define ASUS_WMI_DEVID_WLAN 0x00010011 104 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012 105 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 106 #define ASUS_WMI_DEVID_GPS 0x00010015 107 #define ASUS_WMI_DEVID_WIMAX 0x00010017 108 #define ASUS_WMI_DEVID_WWAN3G 0x00010019 109 #define ASUS_WMI_DEVID_UWB 0x00010021 110 111 /* Leds */ 112 /* 0x000200XX and 0x000400XX */ 113 #define ASUS_WMI_DEVID_LED1 0x00020011 114 #define ASUS_WMI_DEVID_LED2 0x00020012 115 #define ASUS_WMI_DEVID_LED3 0x00020013 116 #define ASUS_WMI_DEVID_LED4 0x00020014 117 #define ASUS_WMI_DEVID_LED5 0x00020015 118 #define ASUS_WMI_DEVID_LED6 0x00020016 119 120 /* Backlight and Brightness */ 121 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011 122 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 123 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 124 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ 125 126 /* Misc */ 127 #define ASUS_WMI_DEVID_CAMERA 0x00060013 128 129 /* Storage */ 130 #define ASUS_WMI_DEVID_CARDREADER 0x00080013 131 132 /* Input */ 133 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 134 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 135 136 /* Fan, Thermal */ 137 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 138 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 139 140 /* Power */ 141 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 142 143 /* Deep S3 / Resume on LID open */ 144 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031 145 146 /* DSTS masks */ 147 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 148 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 149 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 150 #define ASUS_WMI_DSTS_USER_BIT 0x00020000 151 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 152 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 153 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 154 155 struct bios_args { 156 u32 arg0; 157 u32 arg1; 158 } __packed; 159 160 /* 161 * <platform>/ - debugfs root directory 162 * dev_id - current dev_id 163 * ctrl_param - current ctrl_param 164 * method_id - current method_id 165 * devs - call DEVS(dev_id, ctrl_param) and print result 166 * dsts - call DSTS(dev_id) and print result 167 * call - call method_id(dev_id, ctrl_param) and print result 168 */ 169 struct asus_wmi_debug { 170 struct dentry *root; 171 u32 method_id; 172 u32 dev_id; 173 u32 ctrl_param; 174 }; 175 176 struct asus_rfkill { 177 struct asus_wmi *asus; 178 struct rfkill *rfkill; 179 u32 dev_id; 180 }; 181 182 struct asus_wmi { 183 int dsts_id; 184 int spec; 185 int sfun; 186 187 struct input_dev *inputdev; 188 struct backlight_device *backlight_device; 189 struct device *hwmon_device; 190 struct platform_device *platform_device; 191 192 struct led_classdev tpd_led; 193 int tpd_led_wk; 194 struct led_classdev kbd_led; 195 int kbd_led_wk; 196 struct workqueue_struct *led_workqueue; 197 struct work_struct tpd_led_work; 198 struct work_struct kbd_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; 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 else 282 tmp = 0; 283 284 if (retval) 285 *retval = tmp; 286 287 kfree(obj); 288 289 exit: 290 if (ACPI_FAILURE(status)) 291 return -EIO; 292 293 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 294 return -ENODEV; 295 296 return 0; 297 } 298 299 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 300 { 301 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 302 } 303 304 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 305 u32 *retval) 306 { 307 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 308 ctrl_param, retval); 309 } 310 311 /* Helper for special devices with magic return codes */ 312 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 313 u32 dev_id, u32 mask) 314 { 315 u32 retval = 0; 316 int err; 317 318 err = asus_wmi_get_devstate(asus, dev_id, &retval); 319 320 if (err < 0) 321 return err; 322 323 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 324 return -ENODEV; 325 326 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 327 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 328 return -ENODEV; 329 } 330 331 return retval & mask; 332 } 333 334 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 335 { 336 return asus_wmi_get_devstate_bits(asus, dev_id, 337 ASUS_WMI_DSTS_STATUS_BIT); 338 } 339 340 /* 341 * LEDs 342 */ 343 /* 344 * These functions actually update the LED's, and are called from a 345 * workqueue. By doing this as separate work rather than when the LED 346 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 347 * potentially bad time, such as a timer interrupt. 348 */ 349 static void tpd_led_update(struct work_struct *work) 350 { 351 int ctrl_param; 352 struct asus_wmi *asus; 353 354 asus = container_of(work, struct asus_wmi, tpd_led_work); 355 356 ctrl_param = asus->tpd_led_wk; 357 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 358 } 359 360 static void tpd_led_set(struct led_classdev *led_cdev, 361 enum led_brightness value) 362 { 363 struct asus_wmi *asus; 364 365 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 366 367 asus->tpd_led_wk = !!value; 368 queue_work(asus->led_workqueue, &asus->tpd_led_work); 369 } 370 371 static int read_tpd_led_state(struct asus_wmi *asus) 372 { 373 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 374 } 375 376 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 377 { 378 struct asus_wmi *asus; 379 380 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 381 382 return read_tpd_led_state(asus); 383 } 384 385 static void kbd_led_update(struct work_struct *work) 386 { 387 int ctrl_param = 0; 388 struct asus_wmi *asus; 389 390 asus = container_of(work, struct asus_wmi, kbd_led_work); 391 392 /* 393 * bits 0-2: level 394 * bit 7: light on/off 395 */ 396 if (asus->kbd_led_wk > 0) 397 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 398 399 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 400 } 401 402 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 403 { 404 int retval; 405 406 /* 407 * bits 0-2: level 408 * bit 7: light on/off 409 * bit 8-10: environment (0: dark, 1: normal, 2: light) 410 * bit 17: status unknown 411 */ 412 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 413 0xFFFF); 414 415 /* Unknown status is considered as off */ 416 if (retval == 0x8000) 417 retval = 0; 418 419 if (retval >= 0) { 420 if (level) 421 *level = retval & 0x7F; 422 if (env) 423 *env = (retval >> 8) & 0x7F; 424 retval = 0; 425 } 426 427 return retval; 428 } 429 430 static void kbd_led_set(struct led_classdev *led_cdev, 431 enum led_brightness value) 432 { 433 struct asus_wmi *asus; 434 435 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 436 437 if (value > asus->kbd_led.max_brightness) 438 value = asus->kbd_led.max_brightness; 439 else if (value < 0) 440 value = 0; 441 442 asus->kbd_led_wk = value; 443 queue_work(asus->led_workqueue, &asus->kbd_led_work); 444 } 445 446 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 447 { 448 struct asus_wmi *asus; 449 int retval, value; 450 451 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 452 453 retval = kbd_led_read(asus, &value, NULL); 454 455 if (retval < 0) 456 return retval; 457 458 return value; 459 } 460 461 static void asus_wmi_led_exit(struct asus_wmi *asus) 462 { 463 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 464 led_classdev_unregister(&asus->kbd_led); 465 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 466 led_classdev_unregister(&asus->tpd_led); 467 if (asus->led_workqueue) 468 destroy_workqueue(asus->led_workqueue); 469 } 470 471 static int asus_wmi_led_init(struct asus_wmi *asus) 472 { 473 int rv = 0; 474 475 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 476 if (!asus->led_workqueue) 477 return -ENOMEM; 478 479 if (read_tpd_led_state(asus) >= 0) { 480 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 481 482 asus->tpd_led.name = "asus::touchpad"; 483 asus->tpd_led.brightness_set = tpd_led_set; 484 asus->tpd_led.brightness_get = tpd_led_get; 485 asus->tpd_led.max_brightness = 1; 486 487 rv = led_classdev_register(&asus->platform_device->dev, 488 &asus->tpd_led); 489 if (rv) 490 goto error; 491 } 492 493 if (kbd_led_read(asus, NULL, NULL) >= 0) { 494 INIT_WORK(&asus->kbd_led_work, kbd_led_update); 495 496 asus->kbd_led.name = "asus::kbd_backlight"; 497 asus->kbd_led.brightness_set = kbd_led_set; 498 asus->kbd_led.brightness_get = kbd_led_get; 499 asus->kbd_led.max_brightness = 3; 500 501 rv = led_classdev_register(&asus->platform_device->dev, 502 &asus->kbd_led); 503 } 504 505 error: 506 if (rv) 507 asus_wmi_led_exit(asus); 508 509 return rv; 510 } 511 512 513 /* 514 * PCI hotplug (for wlan rfkill) 515 */ 516 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 517 { 518 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 519 520 if (result < 0) 521 return false; 522 return !result; 523 } 524 525 static void asus_rfkill_hotplug(struct asus_wmi *asus) 526 { 527 struct pci_dev *dev; 528 struct pci_bus *bus; 529 bool blocked; 530 bool absent; 531 u32 l; 532 533 mutex_lock(&asus->wmi_lock); 534 blocked = asus_wlan_rfkill_blocked(asus); 535 mutex_unlock(&asus->wmi_lock); 536 537 mutex_lock(&asus->hotplug_lock); 538 539 if (asus->wlan.rfkill) 540 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 541 542 if (asus->hotplug_slot) { 543 bus = pci_find_bus(0, 1); 544 if (!bus) { 545 pr_warn("Unable to find PCI bus 1?\n"); 546 goto out_unlock; 547 } 548 549 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 550 pr_err("Unable to read PCI config space?\n"); 551 goto out_unlock; 552 } 553 absent = (l == 0xffffffff); 554 555 if (blocked != absent) { 556 pr_warn("BIOS says wireless lan is %s, " 557 "but the pci device is %s\n", 558 blocked ? "blocked" : "unblocked", 559 absent ? "absent" : "present"); 560 pr_warn("skipped wireless hotplug as probably " 561 "inappropriate for this model\n"); 562 goto out_unlock; 563 } 564 565 if (!blocked) { 566 dev = pci_get_slot(bus, 0); 567 if (dev) { 568 /* Device already present */ 569 pci_dev_put(dev); 570 goto out_unlock; 571 } 572 dev = pci_scan_single_device(bus, 0); 573 if (dev) { 574 pci_bus_assign_resources(bus); 575 if (pci_bus_add_device(dev)) 576 pr_err("Unable to hotplug wifi\n"); 577 } 578 } else { 579 dev = pci_get_slot(bus, 0); 580 if (dev) { 581 pci_stop_and_remove_bus_device(dev); 582 pci_dev_put(dev); 583 } 584 } 585 } 586 587 out_unlock: 588 mutex_unlock(&asus->hotplug_lock); 589 } 590 591 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 592 { 593 struct asus_wmi *asus = data; 594 595 if (event != ACPI_NOTIFY_BUS_CHECK) 596 return; 597 598 /* 599 * We can't call directly asus_rfkill_hotplug because most 600 * of the time WMBC is still being executed and not reetrant. 601 * There is currently no way to tell ACPICA that we want this 602 * method to be serialized, we schedule a asus_rfkill_hotplug 603 * call later, in a safer context. 604 */ 605 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 606 } 607 608 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 609 { 610 acpi_status status; 611 acpi_handle handle; 612 613 status = acpi_get_handle(NULL, node, &handle); 614 615 if (ACPI_SUCCESS(status)) { 616 status = acpi_install_notify_handler(handle, 617 ACPI_SYSTEM_NOTIFY, 618 asus_rfkill_notify, asus); 619 if (ACPI_FAILURE(status)) 620 pr_warn("Failed to register notify on %s\n", node); 621 } else 622 return -ENODEV; 623 624 return 0; 625 } 626 627 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 628 { 629 acpi_status status = AE_OK; 630 acpi_handle handle; 631 632 status = acpi_get_handle(NULL, node, &handle); 633 634 if (ACPI_SUCCESS(status)) { 635 status = acpi_remove_notify_handler(handle, 636 ACPI_SYSTEM_NOTIFY, 637 asus_rfkill_notify); 638 if (ACPI_FAILURE(status)) 639 pr_err("Error removing rfkill notify handler %s\n", 640 node); 641 } 642 } 643 644 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 645 u8 *value) 646 { 647 struct asus_wmi *asus = hotplug_slot->private; 648 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 649 650 if (result < 0) 651 return result; 652 653 *value = !!result; 654 return 0; 655 } 656 657 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 658 { 659 kfree(hotplug_slot->info); 660 kfree(hotplug_slot); 661 } 662 663 static struct hotplug_slot_ops asus_hotplug_slot_ops = { 664 .owner = THIS_MODULE, 665 .get_adapter_status = asus_get_adapter_status, 666 .get_power_status = asus_get_adapter_status, 667 }; 668 669 static void asus_hotplug_work(struct work_struct *work) 670 { 671 struct asus_wmi *asus; 672 673 asus = container_of(work, struct asus_wmi, hotplug_work); 674 asus_rfkill_hotplug(asus); 675 } 676 677 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 678 { 679 int ret = -ENOMEM; 680 struct pci_bus *bus = pci_find_bus(0, 1); 681 682 if (!bus) { 683 pr_err("Unable to find wifi PCI bus\n"); 684 return -ENODEV; 685 } 686 687 asus->hotplug_workqueue = 688 create_singlethread_workqueue("hotplug_workqueue"); 689 if (!asus->hotplug_workqueue) 690 goto error_workqueue; 691 692 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 693 694 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); 695 if (!asus->hotplug_slot) 696 goto error_slot; 697 698 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), 699 GFP_KERNEL); 700 if (!asus->hotplug_slot->info) 701 goto error_info; 702 703 asus->hotplug_slot->private = asus; 704 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug; 705 asus->hotplug_slot->ops = &asus_hotplug_slot_ops; 706 asus_get_adapter_status(asus->hotplug_slot, 707 &asus->hotplug_slot->info->adapter_status); 708 709 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi"); 710 if (ret) { 711 pr_err("Unable to register hotplug slot - %d\n", ret); 712 goto error_register; 713 } 714 715 return 0; 716 717 error_register: 718 kfree(asus->hotplug_slot->info); 719 error_info: 720 kfree(asus->hotplug_slot); 721 asus->hotplug_slot = NULL; 722 error_slot: 723 destroy_workqueue(asus->hotplug_workqueue); 724 error_workqueue: 725 return ret; 726 } 727 728 /* 729 * Rfkill devices 730 */ 731 static int asus_rfkill_set(void *data, bool blocked) 732 { 733 struct asus_rfkill *priv = data; 734 u32 ctrl_param = !blocked; 735 u32 dev_id = priv->dev_id; 736 737 /* 738 * If the user bit is set, BIOS can't set and record the wlan status, 739 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 740 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 741 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 742 * while setting the wlan status through WMI. 743 * This is also the behavior that windows app will do. 744 */ 745 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 746 priv->asus->driver->wlan_ctrl_by_user) 747 dev_id = ASUS_WMI_DEVID_WLAN_LED; 748 749 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 750 } 751 752 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 753 { 754 struct asus_rfkill *priv = data; 755 int result; 756 757 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 758 759 if (result < 0) 760 return; 761 762 rfkill_set_sw_state(priv->rfkill, !result); 763 } 764 765 static int asus_rfkill_wlan_set(void *data, bool blocked) 766 { 767 struct asus_rfkill *priv = data; 768 struct asus_wmi *asus = priv->asus; 769 int ret; 770 771 /* 772 * This handler is enabled only if hotplug is enabled. 773 * In this case, the asus_wmi_set_devstate() will 774 * trigger a wmi notification and we need to wait 775 * this call to finish before being able to call 776 * any wmi method 777 */ 778 mutex_lock(&asus->wmi_lock); 779 ret = asus_rfkill_set(data, blocked); 780 mutex_unlock(&asus->wmi_lock); 781 return ret; 782 } 783 784 static const struct rfkill_ops asus_rfkill_wlan_ops = { 785 .set_block = asus_rfkill_wlan_set, 786 .query = asus_rfkill_query, 787 }; 788 789 static const struct rfkill_ops asus_rfkill_ops = { 790 .set_block = asus_rfkill_set, 791 .query = asus_rfkill_query, 792 }; 793 794 static int asus_new_rfkill(struct asus_wmi *asus, 795 struct asus_rfkill *arfkill, 796 const char *name, enum rfkill_type type, int dev_id) 797 { 798 int result = asus_wmi_get_devstate_simple(asus, dev_id); 799 struct rfkill **rfkill = &arfkill->rfkill; 800 801 if (result < 0) 802 return result; 803 804 arfkill->dev_id = dev_id; 805 arfkill->asus = asus; 806 807 if (dev_id == ASUS_WMI_DEVID_WLAN && 808 asus->driver->quirks->hotplug_wireless) 809 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 810 &asus_rfkill_wlan_ops, arfkill); 811 else 812 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 813 &asus_rfkill_ops, arfkill); 814 815 if (!*rfkill) 816 return -EINVAL; 817 818 rfkill_init_sw_state(*rfkill, !result); 819 result = rfkill_register(*rfkill); 820 if (result) { 821 rfkill_destroy(*rfkill); 822 *rfkill = NULL; 823 return result; 824 } 825 return 0; 826 } 827 828 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 829 { 830 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 831 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 832 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 833 if (asus->wlan.rfkill) { 834 rfkill_unregister(asus->wlan.rfkill); 835 rfkill_destroy(asus->wlan.rfkill); 836 asus->wlan.rfkill = NULL; 837 } 838 /* 839 * Refresh pci hotplug in case the rfkill state was changed after 840 * asus_unregister_rfkill_notifier() 841 */ 842 asus_rfkill_hotplug(asus); 843 if (asus->hotplug_slot) 844 pci_hp_deregister(asus->hotplug_slot); 845 if (asus->hotplug_workqueue) 846 destroy_workqueue(asus->hotplug_workqueue); 847 848 if (asus->bluetooth.rfkill) { 849 rfkill_unregister(asus->bluetooth.rfkill); 850 rfkill_destroy(asus->bluetooth.rfkill); 851 asus->bluetooth.rfkill = NULL; 852 } 853 if (asus->wimax.rfkill) { 854 rfkill_unregister(asus->wimax.rfkill); 855 rfkill_destroy(asus->wimax.rfkill); 856 asus->wimax.rfkill = NULL; 857 } 858 if (asus->wwan3g.rfkill) { 859 rfkill_unregister(asus->wwan3g.rfkill); 860 rfkill_destroy(asus->wwan3g.rfkill); 861 asus->wwan3g.rfkill = NULL; 862 } 863 if (asus->gps.rfkill) { 864 rfkill_unregister(asus->gps.rfkill); 865 rfkill_destroy(asus->gps.rfkill); 866 asus->gps.rfkill = NULL; 867 } 868 if (asus->uwb.rfkill) { 869 rfkill_unregister(asus->uwb.rfkill); 870 rfkill_destroy(asus->uwb.rfkill); 871 asus->uwb.rfkill = NULL; 872 } 873 } 874 875 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 876 { 877 int result = 0; 878 879 mutex_init(&asus->hotplug_lock); 880 mutex_init(&asus->wmi_lock); 881 882 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 883 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 884 885 if (result && result != -ENODEV) 886 goto exit; 887 888 result = asus_new_rfkill(asus, &asus->bluetooth, 889 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 890 ASUS_WMI_DEVID_BLUETOOTH); 891 892 if (result && result != -ENODEV) 893 goto exit; 894 895 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 896 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 897 898 if (result && result != -ENODEV) 899 goto exit; 900 901 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 902 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 903 904 if (result && result != -ENODEV) 905 goto exit; 906 907 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 908 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 909 910 if (result && result != -ENODEV) 911 goto exit; 912 913 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 914 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 915 916 if (result && result != -ENODEV) 917 goto exit; 918 919 if (!asus->driver->quirks->hotplug_wireless) 920 goto exit; 921 922 result = asus_setup_pci_hotplug(asus); 923 /* 924 * If we get -EBUSY then something else is handling the PCI hotplug - 925 * don't fail in this case 926 */ 927 if (result == -EBUSY) 928 result = 0; 929 930 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 931 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 932 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 933 /* 934 * Refresh pci hotplug in case the rfkill state was changed during 935 * setup. 936 */ 937 asus_rfkill_hotplug(asus); 938 939 exit: 940 if (result && result != -ENODEV) 941 asus_wmi_rfkill_exit(asus); 942 943 if (result == -ENODEV) 944 result = 0; 945 946 return result; 947 } 948 949 /* 950 * Hwmon device 951 */ 952 static ssize_t asus_hwmon_pwm1(struct device *dev, 953 struct device_attribute *attr, 954 char *buf) 955 { 956 struct asus_wmi *asus = dev_get_drvdata(dev); 957 u32 value; 958 int err; 959 960 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value); 961 962 if (err < 0) 963 return err; 964 965 value &= 0xFF; 966 967 if (value == 1) /* Low Speed */ 968 value = 85; 969 else if (value == 2) 970 value = 170; 971 else if (value == 3) 972 value = 255; 973 else if (value != 0) { 974 pr_err("Unknown fan speed %#x", value); 975 value = -1; 976 } 977 978 return sprintf(buf, "%d\n", value); 979 } 980 981 static ssize_t asus_hwmon_temp1(struct device *dev, 982 struct device_attribute *attr, 983 char *buf) 984 { 985 struct asus_wmi *asus = dev_get_drvdata(dev); 986 u32 value; 987 int err; 988 989 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 990 991 if (err < 0) 992 return err; 993 994 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000; 995 996 return sprintf(buf, "%d\n", value); 997 } 998 999 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0); 1000 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0); 1001 1002 static ssize_t 1003 show_name(struct device *dev, struct device_attribute *attr, char *buf) 1004 { 1005 return sprintf(buf, "asus\n"); 1006 } 1007 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); 1008 1009 static struct attribute *hwmon_attributes[] = { 1010 &sensor_dev_attr_pwm1.dev_attr.attr, 1011 &sensor_dev_attr_temp1_input.dev_attr.attr, 1012 &sensor_dev_attr_name.dev_attr.attr, 1013 NULL 1014 }; 1015 1016 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1017 struct attribute *attr, int idx) 1018 { 1019 struct device *dev = container_of(kobj, struct device, kobj); 1020 struct platform_device *pdev = to_platform_device(dev->parent); 1021 struct asus_wmi *asus = platform_get_drvdata(pdev); 1022 bool ok = true; 1023 int dev_id = -1; 1024 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1025 1026 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr) 1027 dev_id = ASUS_WMI_DEVID_FAN_CTRL; 1028 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr) 1029 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL; 1030 1031 if (dev_id != -1) { 1032 int err = asus_wmi_get_devstate(asus, dev_id, &value); 1033 1034 if (err < 0) 1035 return 0; /* can't return negative here */ 1036 } 1037 1038 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) { 1039 /* 1040 * We need to find a better way, probably using sfun, 1041 * bits or spec ... 1042 * Currently we disable it if: 1043 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1044 * - reverved bits are non-zero 1045 * - sfun and presence bit are not set 1046 */ 1047 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1048 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))) 1049 ok = false; 1050 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) { 1051 /* If value is zero, something is clearly wrong */ 1052 if (value == 0) 1053 ok = false; 1054 } 1055 1056 return ok ? attr->mode : 0; 1057 } 1058 1059 static struct attribute_group hwmon_attribute_group = { 1060 .is_visible = asus_hwmon_sysfs_is_visible, 1061 .attrs = hwmon_attributes 1062 }; 1063 1064 static void asus_wmi_hwmon_exit(struct asus_wmi *asus) 1065 { 1066 struct device *hwmon; 1067 1068 hwmon = asus->hwmon_device; 1069 if (!hwmon) 1070 return; 1071 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group); 1072 hwmon_device_unregister(hwmon); 1073 asus->hwmon_device = NULL; 1074 } 1075 1076 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1077 { 1078 struct device *hwmon; 1079 int result; 1080 1081 hwmon = hwmon_device_register(&asus->platform_device->dev); 1082 if (IS_ERR(hwmon)) { 1083 pr_err("Could not register asus hwmon device\n"); 1084 return PTR_ERR(hwmon); 1085 } 1086 dev_set_drvdata(hwmon, asus); 1087 asus->hwmon_device = hwmon; 1088 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group); 1089 if (result) 1090 asus_wmi_hwmon_exit(asus); 1091 return result; 1092 } 1093 1094 /* 1095 * Backlight 1096 */ 1097 static int read_backlight_power(struct asus_wmi *asus) 1098 { 1099 int ret; 1100 if (asus->driver->quirks->store_backlight_power) 1101 ret = !asus->driver->panel_power; 1102 else 1103 ret = asus_wmi_get_devstate_simple(asus, 1104 ASUS_WMI_DEVID_BACKLIGHT); 1105 1106 if (ret < 0) 1107 return ret; 1108 1109 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1110 } 1111 1112 static int read_brightness_max(struct asus_wmi *asus) 1113 { 1114 u32 retval; 1115 int err; 1116 1117 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1118 1119 if (err < 0) 1120 return err; 1121 1122 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1123 retval >>= 8; 1124 1125 if (!retval) 1126 return -ENODEV; 1127 1128 return retval; 1129 } 1130 1131 static int read_brightness(struct backlight_device *bd) 1132 { 1133 struct asus_wmi *asus = bl_get_data(bd); 1134 u32 retval; 1135 int err; 1136 1137 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1138 1139 if (err < 0) 1140 return err; 1141 1142 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1143 } 1144 1145 static u32 get_scalar_command(struct backlight_device *bd) 1146 { 1147 struct asus_wmi *asus = bl_get_data(bd); 1148 u32 ctrl_param = 0; 1149 1150 if ((asus->driver->brightness < bd->props.brightness) || 1151 bd->props.brightness == bd->props.max_brightness) 1152 ctrl_param = 0x00008001; 1153 else if ((asus->driver->brightness > bd->props.brightness) || 1154 bd->props.brightness == 0) 1155 ctrl_param = 0x00008000; 1156 1157 asus->driver->brightness = bd->props.brightness; 1158 1159 return ctrl_param; 1160 } 1161 1162 static int update_bl_status(struct backlight_device *bd) 1163 { 1164 struct asus_wmi *asus = bl_get_data(bd); 1165 u32 ctrl_param; 1166 int power, err = 0; 1167 1168 power = read_backlight_power(asus); 1169 if (power != -ENODEV && bd->props.power != power) { 1170 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1171 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1172 ctrl_param, NULL); 1173 if (asus->driver->quirks->store_backlight_power) 1174 asus->driver->panel_power = bd->props.power; 1175 1176 /* When using scalar brightness, updating the brightness 1177 * will mess with the backlight power */ 1178 if (asus->driver->quirks->scalar_panel_brightness) 1179 return err; 1180 } 1181 1182 if (asus->driver->quirks->scalar_panel_brightness) 1183 ctrl_param = get_scalar_command(bd); 1184 else 1185 ctrl_param = bd->props.brightness; 1186 1187 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1188 ctrl_param, NULL); 1189 1190 return err; 1191 } 1192 1193 static const struct backlight_ops asus_wmi_bl_ops = { 1194 .get_brightness = read_brightness, 1195 .update_status = update_bl_status, 1196 }; 1197 1198 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1199 { 1200 struct backlight_device *bd = asus->backlight_device; 1201 int old = bd->props.brightness; 1202 int new = old; 1203 1204 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1205 new = code - NOTIFY_BRNUP_MIN + 1; 1206 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1207 new = code - NOTIFY_BRNDOWN_MIN; 1208 1209 bd->props.brightness = new; 1210 backlight_update_status(bd); 1211 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1212 1213 return old; 1214 } 1215 1216 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1217 { 1218 struct backlight_device *bd; 1219 struct backlight_properties props; 1220 int max; 1221 int power; 1222 1223 max = read_brightness_max(asus); 1224 1225 if (max == -ENODEV) 1226 max = 0; 1227 else if (max < 0) 1228 return max; 1229 1230 power = read_backlight_power(asus); 1231 1232 if (power == -ENODEV) 1233 power = FB_BLANK_UNBLANK; 1234 else if (power < 0) 1235 return power; 1236 1237 memset(&props, 0, sizeof(struct backlight_properties)); 1238 props.type = BACKLIGHT_PLATFORM; 1239 props.max_brightness = max; 1240 bd = backlight_device_register(asus->driver->name, 1241 &asus->platform_device->dev, asus, 1242 &asus_wmi_bl_ops, &props); 1243 if (IS_ERR(bd)) { 1244 pr_err("Could not register backlight device\n"); 1245 return PTR_ERR(bd); 1246 } 1247 1248 asus->backlight_device = bd; 1249 1250 if (asus->driver->quirks->store_backlight_power) 1251 asus->driver->panel_power = power; 1252 1253 bd->props.brightness = read_brightness(bd); 1254 bd->props.power = power; 1255 backlight_update_status(bd); 1256 1257 asus->driver->brightness = bd->props.brightness; 1258 1259 return 0; 1260 } 1261 1262 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1263 { 1264 if (asus->backlight_device) 1265 backlight_device_unregister(asus->backlight_device); 1266 1267 asus->backlight_device = NULL; 1268 } 1269 1270 static void asus_wmi_notify(u32 value, void *context) 1271 { 1272 struct asus_wmi *asus = context; 1273 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1274 union acpi_object *obj; 1275 acpi_status status; 1276 int code; 1277 int orig_code; 1278 unsigned int key_value = 1; 1279 bool autorelease = 1; 1280 1281 status = wmi_get_event_data(value, &response); 1282 if (status != AE_OK) { 1283 pr_err("bad event status 0x%x\n", status); 1284 return; 1285 } 1286 1287 obj = (union acpi_object *)response.pointer; 1288 1289 if (!obj || obj->type != ACPI_TYPE_INTEGER) 1290 goto exit; 1291 1292 code = obj->integer.value; 1293 orig_code = code; 1294 1295 if (asus->driver->key_filter) { 1296 asus->driver->key_filter(asus->driver, &code, &key_value, 1297 &autorelease); 1298 if (code == ASUS_WMI_KEY_IGNORE) 1299 goto exit; 1300 } 1301 1302 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1303 code = NOTIFY_BRNUP_MIN; 1304 else if (code >= NOTIFY_BRNDOWN_MIN && 1305 code <= NOTIFY_BRNDOWN_MAX) 1306 code = NOTIFY_BRNDOWN_MIN; 1307 1308 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) { 1309 if (!acpi_video_backlight_support()) 1310 asus_wmi_backlight_notify(asus, orig_code); 1311 } else if (!sparse_keymap_report_event(asus->inputdev, code, 1312 key_value, autorelease)) 1313 pr_info("Unknown key %x pressed\n", code); 1314 1315 exit: 1316 kfree(obj); 1317 } 1318 1319 /* 1320 * Sys helpers 1321 */ 1322 static int parse_arg(const char *buf, unsigned long count, int *val) 1323 { 1324 if (!count) 1325 return 0; 1326 if (sscanf(buf, "%i", val) != 1) 1327 return -EINVAL; 1328 return count; 1329 } 1330 1331 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1332 const char *buf, size_t count) 1333 { 1334 u32 retval; 1335 int rv, err, value; 1336 1337 value = asus_wmi_get_devstate_simple(asus, devid); 1338 if (value == -ENODEV) /* Check device presence */ 1339 return value; 1340 1341 rv = parse_arg(buf, count, &value); 1342 err = asus_wmi_set_devstate(devid, value, &retval); 1343 1344 if (err < 0) 1345 return err; 1346 1347 return rv; 1348 } 1349 1350 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1351 { 1352 int value = asus_wmi_get_devstate_simple(asus, devid); 1353 1354 if (value < 0) 1355 return value; 1356 1357 return sprintf(buf, "%d\n", value); 1358 } 1359 1360 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1361 static ssize_t show_##_name(struct device *dev, \ 1362 struct device_attribute *attr, \ 1363 char *buf) \ 1364 { \ 1365 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1366 \ 1367 return show_sys_wmi(asus, _cm, buf); \ 1368 } \ 1369 static ssize_t store_##_name(struct device *dev, \ 1370 struct device_attribute *attr, \ 1371 const char *buf, size_t count) \ 1372 { \ 1373 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1374 \ 1375 return store_sys_wmi(asus, _cm, buf, count); \ 1376 } \ 1377 static struct device_attribute dev_attr_##_name = { \ 1378 .attr = { \ 1379 .name = __stringify(_name), \ 1380 .mode = _mode }, \ 1381 .show = show_##_name, \ 1382 .store = store_##_name, \ 1383 } 1384 1385 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1386 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1387 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1388 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1389 1390 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, 1391 const char *buf, size_t count) 1392 { 1393 int value, rv; 1394 1395 if (!count || sscanf(buf, "%i", &value) != 1) 1396 return -EINVAL; 1397 if (value < 0 || value > 2) 1398 return -EINVAL; 1399 1400 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1401 if (rv < 0) 1402 return rv; 1403 1404 return count; 1405 } 1406 1407 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); 1408 1409 static struct attribute *platform_attributes[] = { 1410 &dev_attr_cpufv.attr, 1411 &dev_attr_camera.attr, 1412 &dev_attr_cardr.attr, 1413 &dev_attr_touchpad.attr, 1414 &dev_attr_lid_resume.attr, 1415 NULL 1416 }; 1417 1418 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1419 struct attribute *attr, int idx) 1420 { 1421 struct device *dev = container_of(kobj, struct device, kobj); 1422 struct platform_device *pdev = to_platform_device(dev); 1423 struct asus_wmi *asus = platform_get_drvdata(pdev); 1424 bool ok = true; 1425 int devid = -1; 1426 1427 if (attr == &dev_attr_camera.attr) 1428 devid = ASUS_WMI_DEVID_CAMERA; 1429 else if (attr == &dev_attr_cardr.attr) 1430 devid = ASUS_WMI_DEVID_CARDREADER; 1431 else if (attr == &dev_attr_touchpad.attr) 1432 devid = ASUS_WMI_DEVID_TOUCHPAD; 1433 else if (attr == &dev_attr_lid_resume.attr) 1434 devid = ASUS_WMI_DEVID_LID_RESUME; 1435 1436 if (devid != -1) 1437 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1438 1439 return ok ? attr->mode : 0; 1440 } 1441 1442 static struct attribute_group platform_attribute_group = { 1443 .is_visible = asus_sysfs_is_visible, 1444 .attrs = platform_attributes 1445 }; 1446 1447 static void asus_wmi_sysfs_exit(struct platform_device *device) 1448 { 1449 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1450 } 1451 1452 static int asus_wmi_sysfs_init(struct platform_device *device) 1453 { 1454 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1455 } 1456 1457 /* 1458 * Platform device 1459 */ 1460 static int asus_wmi_platform_init(struct asus_wmi *asus) 1461 { 1462 int rv; 1463 1464 /* INIT enable hotkeys on some models */ 1465 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1466 pr_info("Initialization: %#x", rv); 1467 1468 /* We don't know yet what to do with this version... */ 1469 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1470 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF); 1471 asus->spec = rv; 1472 } 1473 1474 /* 1475 * The SFUN method probably allows the original driver to get the list 1476 * of features supported by a given model. For now, 0x0100 or 0x0800 1477 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1478 * The significance of others is yet to be found. 1479 */ 1480 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1481 pr_info("SFUN value: %#x", rv); 1482 asus->sfun = rv; 1483 } 1484 1485 /* 1486 * Eee PC and Notebooks seems to have different method_id for DSTS, 1487 * but it may also be related to the BIOS's SPEC. 1488 * Note, on most Eeepc, there is no way to check if a method exist 1489 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1490 * but once again, SPEC may probably be used for that kind of things. 1491 */ 1492 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1493 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1494 else 1495 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1496 1497 /* CWAP allow to define the behavior of the Fn+F2 key, 1498 * this method doesn't seems to be present on Eee PCs */ 1499 if (asus->driver->quirks->wapf >= 0) 1500 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1501 asus->driver->quirks->wapf, NULL); 1502 1503 return asus_wmi_sysfs_init(asus->platform_device); 1504 } 1505 1506 static void asus_wmi_platform_exit(struct asus_wmi *asus) 1507 { 1508 asus_wmi_sysfs_exit(asus->platform_device); 1509 } 1510 1511 /* 1512 * debugfs 1513 */ 1514 struct asus_wmi_debugfs_node { 1515 struct asus_wmi *asus; 1516 char *name; 1517 int (*show) (struct seq_file *m, void *data); 1518 }; 1519 1520 static int show_dsts(struct seq_file *m, void *data) 1521 { 1522 struct asus_wmi *asus = m->private; 1523 int err; 1524 u32 retval = -1; 1525 1526 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1527 1528 if (err < 0) 1529 return err; 1530 1531 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1532 1533 return 0; 1534 } 1535 1536 static int show_devs(struct seq_file *m, void *data) 1537 { 1538 struct asus_wmi *asus = m->private; 1539 int err; 1540 u32 retval = -1; 1541 1542 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 1543 &retval); 1544 1545 if (err < 0) 1546 return err; 1547 1548 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 1549 asus->debug.ctrl_param, retval); 1550 1551 return 0; 1552 } 1553 1554 static int show_call(struct seq_file *m, void *data) 1555 { 1556 struct asus_wmi *asus = m->private; 1557 struct bios_args args = { 1558 .arg0 = asus->debug.dev_id, 1559 .arg1 = asus->debug.ctrl_param, 1560 }; 1561 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1562 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1563 union acpi_object *obj; 1564 acpi_status status; 1565 1566 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1567 1, asus->debug.method_id, 1568 &input, &output); 1569 1570 if (ACPI_FAILURE(status)) 1571 return -EIO; 1572 1573 obj = (union acpi_object *)output.pointer; 1574 if (obj && obj->type == ACPI_TYPE_INTEGER) 1575 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 1576 asus->debug.dev_id, asus->debug.ctrl_param, 1577 (u32) obj->integer.value); 1578 else 1579 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 1580 asus->debug.dev_id, asus->debug.ctrl_param, 1581 obj ? obj->type : -1); 1582 1583 kfree(obj); 1584 1585 return 0; 1586 } 1587 1588 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 1589 {NULL, "devs", show_devs}, 1590 {NULL, "dsts", show_dsts}, 1591 {NULL, "call", show_call}, 1592 }; 1593 1594 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 1595 { 1596 struct asus_wmi_debugfs_node *node = inode->i_private; 1597 1598 return single_open(file, node->show, node->asus); 1599 } 1600 1601 static const struct file_operations asus_wmi_debugfs_io_ops = { 1602 .owner = THIS_MODULE, 1603 .open = asus_wmi_debugfs_open, 1604 .read = seq_read, 1605 .llseek = seq_lseek, 1606 .release = single_release, 1607 }; 1608 1609 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 1610 { 1611 debugfs_remove_recursive(asus->debug.root); 1612 } 1613 1614 static int asus_wmi_debugfs_init(struct asus_wmi *asus) 1615 { 1616 struct dentry *dent; 1617 int i; 1618 1619 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 1620 if (!asus->debug.root) { 1621 pr_err("failed to create debugfs directory"); 1622 goto error_debugfs; 1623 } 1624 1625 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 1626 asus->debug.root, &asus->debug.method_id); 1627 if (!dent) 1628 goto error_debugfs; 1629 1630 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 1631 asus->debug.root, &asus->debug.dev_id); 1632 if (!dent) 1633 goto error_debugfs; 1634 1635 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 1636 asus->debug.root, &asus->debug.ctrl_param); 1637 if (!dent) 1638 goto error_debugfs; 1639 1640 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 1641 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 1642 1643 node->asus = asus; 1644 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 1645 asus->debug.root, node, 1646 &asus_wmi_debugfs_io_ops); 1647 if (!dent) { 1648 pr_err("failed to create debug file: %s\n", node->name); 1649 goto error_debugfs; 1650 } 1651 } 1652 1653 return 0; 1654 1655 error_debugfs: 1656 asus_wmi_debugfs_exit(asus); 1657 return -ENOMEM; 1658 } 1659 1660 /* 1661 * WMI Driver 1662 */ 1663 static int asus_wmi_add(struct platform_device *pdev) 1664 { 1665 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 1666 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 1667 struct asus_wmi *asus; 1668 acpi_status status; 1669 int err; 1670 u32 result; 1671 1672 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 1673 if (!asus) 1674 return -ENOMEM; 1675 1676 asus->driver = wdrv; 1677 asus->platform_device = pdev; 1678 wdrv->platform_device = pdev; 1679 platform_set_drvdata(asus->platform_device, asus); 1680 1681 if (wdrv->detect_quirks) 1682 wdrv->detect_quirks(asus->driver); 1683 1684 err = asus_wmi_platform_init(asus); 1685 if (err) 1686 goto fail_platform; 1687 1688 err = asus_wmi_input_init(asus); 1689 if (err) 1690 goto fail_input; 1691 1692 err = asus_wmi_hwmon_init(asus); 1693 if (err) 1694 goto fail_hwmon; 1695 1696 err = asus_wmi_led_init(asus); 1697 if (err) 1698 goto fail_leds; 1699 1700 err = asus_wmi_rfkill_init(asus); 1701 if (err) 1702 goto fail_rfkill; 1703 1704 if (asus->driver->quirks->wmi_backlight_power) 1705 acpi_video_dmi_promote_vendor(); 1706 if (!acpi_video_backlight_support()) { 1707 #ifdef CONFIG_ACPI_VIDEO 1708 pr_info("Disabling ACPI video driver\n"); 1709 acpi_video_unregister(); 1710 #endif 1711 err = asus_wmi_backlight_init(asus); 1712 if (err && err != -ENODEV) 1713 goto fail_backlight; 1714 } else 1715 pr_info("Backlight controlled by ACPI video driver\n"); 1716 1717 status = wmi_install_notify_handler(asus->driver->event_guid, 1718 asus_wmi_notify, asus); 1719 if (ACPI_FAILURE(status)) { 1720 pr_err("Unable to register notify handler - %d\n", status); 1721 err = -ENODEV; 1722 goto fail_wmi_handler; 1723 } 1724 1725 err = asus_wmi_debugfs_init(asus); 1726 if (err) 1727 goto fail_debugfs; 1728 1729 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 1730 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 1731 asus->driver->wlan_ctrl_by_user = 1; 1732 1733 return 0; 1734 1735 fail_debugfs: 1736 wmi_remove_notify_handler(asus->driver->event_guid); 1737 fail_wmi_handler: 1738 asus_wmi_backlight_exit(asus); 1739 fail_backlight: 1740 asus_wmi_rfkill_exit(asus); 1741 fail_rfkill: 1742 asus_wmi_led_exit(asus); 1743 fail_leds: 1744 asus_wmi_hwmon_exit(asus); 1745 fail_hwmon: 1746 asus_wmi_input_exit(asus); 1747 fail_input: 1748 asus_wmi_platform_exit(asus); 1749 fail_platform: 1750 kfree(asus); 1751 return err; 1752 } 1753 1754 static int asus_wmi_remove(struct platform_device *device) 1755 { 1756 struct asus_wmi *asus; 1757 1758 asus = platform_get_drvdata(device); 1759 wmi_remove_notify_handler(asus->driver->event_guid); 1760 asus_wmi_backlight_exit(asus); 1761 asus_wmi_input_exit(asus); 1762 asus_wmi_hwmon_exit(asus); 1763 asus_wmi_led_exit(asus); 1764 asus_wmi_rfkill_exit(asus); 1765 asus_wmi_debugfs_exit(asus); 1766 asus_wmi_platform_exit(asus); 1767 1768 kfree(asus); 1769 return 0; 1770 } 1771 1772 /* 1773 * Platform driver - hibernate/resume callbacks 1774 */ 1775 static int asus_hotk_thaw(struct device *device) 1776 { 1777 struct asus_wmi *asus = dev_get_drvdata(device); 1778 1779 if (asus->wlan.rfkill) { 1780 bool wlan; 1781 1782 /* 1783 * Work around bios bug - acpi _PTS turns off the wireless led 1784 * during suspend. Normally it restores it on resume, but 1785 * we should kick it ourselves in case hibernation is aborted. 1786 */ 1787 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 1788 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 1789 } 1790 1791 return 0; 1792 } 1793 1794 static int asus_hotk_restore(struct device *device) 1795 { 1796 struct asus_wmi *asus = dev_get_drvdata(device); 1797 int bl; 1798 1799 /* Refresh both wlan rfkill state and pci hotplug */ 1800 if (asus->wlan.rfkill) 1801 asus_rfkill_hotplug(asus); 1802 1803 if (asus->bluetooth.rfkill) { 1804 bl = !asus_wmi_get_devstate_simple(asus, 1805 ASUS_WMI_DEVID_BLUETOOTH); 1806 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 1807 } 1808 if (asus->wimax.rfkill) { 1809 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 1810 rfkill_set_sw_state(asus->wimax.rfkill, bl); 1811 } 1812 if (asus->wwan3g.rfkill) { 1813 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 1814 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 1815 } 1816 if (asus->gps.rfkill) { 1817 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 1818 rfkill_set_sw_state(asus->gps.rfkill, bl); 1819 } 1820 if (asus->uwb.rfkill) { 1821 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 1822 rfkill_set_sw_state(asus->uwb.rfkill, bl); 1823 } 1824 1825 return 0; 1826 } 1827 1828 static const struct dev_pm_ops asus_pm_ops = { 1829 .thaw = asus_hotk_thaw, 1830 .restore = asus_hotk_restore, 1831 }; 1832 1833 static int asus_wmi_probe(struct platform_device *pdev) 1834 { 1835 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 1836 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 1837 int ret; 1838 1839 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 1840 pr_warn("Management GUID not found\n"); 1841 return -ENODEV; 1842 } 1843 1844 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 1845 pr_warn("Event GUID not found\n"); 1846 return -ENODEV; 1847 } 1848 1849 if (wdrv->probe) { 1850 ret = wdrv->probe(pdev); 1851 if (ret) 1852 return ret; 1853 } 1854 1855 return asus_wmi_add(pdev); 1856 } 1857 1858 static bool used; 1859 1860 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 1861 { 1862 struct platform_driver *platform_driver; 1863 struct platform_device *platform_device; 1864 1865 if (used) 1866 return -EBUSY; 1867 1868 platform_driver = &driver->platform_driver; 1869 platform_driver->remove = asus_wmi_remove; 1870 platform_driver->driver.owner = driver->owner; 1871 platform_driver->driver.name = driver->name; 1872 platform_driver->driver.pm = &asus_pm_ops; 1873 1874 platform_device = platform_create_bundle(platform_driver, 1875 asus_wmi_probe, 1876 NULL, 0, NULL, 0); 1877 if (IS_ERR(platform_device)) 1878 return PTR_ERR(platform_device); 1879 1880 used = true; 1881 return 0; 1882 } 1883 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 1884 1885 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 1886 { 1887 platform_device_unregister(driver->platform_device); 1888 platform_driver_unregister(&driver->platform_driver); 1889 used = false; 1890 } 1891 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 1892 1893 static int __init asus_wmi_init(void) 1894 { 1895 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 1896 pr_info("Asus Management GUID not found"); 1897 return -ENODEV; 1898 } 1899 1900 pr_info("ASUS WMI generic driver loaded"); 1901 return 0; 1902 } 1903 1904 static void __exit asus_wmi_exit(void) 1905 { 1906 pr_info("ASUS WMI generic driver unloaded"); 1907 } 1908 1909 module_init(asus_wmi_init); 1910 module_exit(asus_wmi_exit); 1911