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_asus_wmi_driver(pdrv) \ 60 (container_of((pdrv), struct asus_wmi_driver, platform_driver)) 61 62 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" 63 64 #define NOTIFY_BRNUP_MIN 0x11 65 #define NOTIFY_BRNUP_MAX 0x1f 66 #define NOTIFY_BRNDOWN_MIN 0x20 67 #define NOTIFY_BRNDOWN_MAX 0x2e 68 #define NOTIFY_KBD_BRTUP 0xc4 69 #define NOTIFY_KBD_BRTDWN 0xc5 70 #define NOTIFY_KBD_BRTTOGGLE 0xc7 71 72 /* WMI Methods */ 73 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */ 74 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */ 75 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */ 76 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */ 77 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */ 78 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */ 79 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */ 80 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */ 81 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */ 82 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */ 83 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */ 84 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */ 85 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */ 86 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/ 87 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */ 88 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */ 89 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */ 90 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ 91 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ 92 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ 93 94 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE 95 96 /* Wireless */ 97 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 98 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 99 #define ASUS_WMI_DEVID_CWAP 0x00010003 100 #define ASUS_WMI_DEVID_WLAN 0x00010011 101 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012 102 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 103 #define ASUS_WMI_DEVID_GPS 0x00010015 104 #define ASUS_WMI_DEVID_WIMAX 0x00010017 105 #define ASUS_WMI_DEVID_WWAN3G 0x00010019 106 #define ASUS_WMI_DEVID_UWB 0x00010021 107 108 /* Leds */ 109 /* 0x000200XX and 0x000400XX */ 110 #define ASUS_WMI_DEVID_LED1 0x00020011 111 #define ASUS_WMI_DEVID_LED2 0x00020012 112 #define ASUS_WMI_DEVID_LED3 0x00020013 113 #define ASUS_WMI_DEVID_LED4 0x00020014 114 #define ASUS_WMI_DEVID_LED5 0x00020015 115 #define ASUS_WMI_DEVID_LED6 0x00020016 116 117 /* Backlight and Brightness */ 118 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */ 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 #define ASUS_WMI_DEVID_LIGHTBAR 0x00050025 124 125 /* Misc */ 126 #define ASUS_WMI_DEVID_CAMERA 0x00060013 127 128 /* Storage */ 129 #define ASUS_WMI_DEVID_CARDREADER 0x00080013 130 131 /* Input */ 132 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 133 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 134 135 /* Fan, Thermal */ 136 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 137 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 138 139 /* Power */ 140 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 141 142 /* Deep S3 / Resume on LID open */ 143 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031 144 145 /* DSTS masks */ 146 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 147 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 148 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 149 #define ASUS_WMI_DSTS_USER_BIT 0x00020000 150 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 151 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 152 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 153 #define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F 154 155 #define ASUS_FAN_DESC "cpu_fan" 156 #define ASUS_FAN_MFUN 0x13 157 #define ASUS_FAN_SFUN_READ 0x06 158 #define ASUS_FAN_SFUN_WRITE 0x07 159 #define ASUS_FAN_CTRL_MANUAL 1 160 #define ASUS_FAN_CTRL_AUTO 2 161 162 #define USB_INTEL_XUSB2PR 0xD0 163 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 164 165 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 166 167 static bool ashs_present(void) 168 { 169 int i = 0; 170 while (ashs_ids[i]) { 171 if (acpi_dev_found(ashs_ids[i++])) 172 return true; 173 } 174 return false; 175 } 176 177 struct bios_args { 178 u32 arg0; 179 u32 arg1; 180 } __packed; 181 182 /* 183 * Struct that's used for all methods called via AGFN. Naming is 184 * identically to the AML code. 185 */ 186 struct agfn_args { 187 u16 mfun; /* probably "Multi-function" to be called */ 188 u16 sfun; /* probably "Sub-function" to be called */ 189 u16 len; /* size of the hole struct, including subfunction fields */ 190 u8 stas; /* not used by now */ 191 u8 err; /* zero on success */ 192 } __packed; 193 194 /* struct used for calling fan read and write methods */ 195 struct fan_args { 196 struct agfn_args agfn; /* common fields */ 197 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 198 u32 speed; /* read: RPM/100 - write: 0-255 */ 199 } __packed; 200 201 /* 202 * <platform>/ - debugfs root directory 203 * dev_id - current dev_id 204 * ctrl_param - current ctrl_param 205 * method_id - current method_id 206 * devs - call DEVS(dev_id, ctrl_param) and print result 207 * dsts - call DSTS(dev_id) and print result 208 * call - call method_id(dev_id, ctrl_param) and print result 209 */ 210 struct asus_wmi_debug { 211 struct dentry *root; 212 u32 method_id; 213 u32 dev_id; 214 u32 ctrl_param; 215 }; 216 217 struct asus_rfkill { 218 struct asus_wmi *asus; 219 struct rfkill *rfkill; 220 u32 dev_id; 221 }; 222 223 struct asus_wmi { 224 int dsts_id; 225 int spec; 226 int sfun; 227 228 struct input_dev *inputdev; 229 struct backlight_device *backlight_device; 230 struct platform_device *platform_device; 231 232 struct led_classdev wlan_led; 233 int wlan_led_wk; 234 struct led_classdev tpd_led; 235 int tpd_led_wk; 236 struct led_classdev kbd_led; 237 int kbd_led_wk; 238 struct led_classdev lightbar_led; 239 int lightbar_led_wk; 240 struct workqueue_struct *led_workqueue; 241 struct work_struct tpd_led_work; 242 struct work_struct kbd_led_work; 243 struct work_struct wlan_led_work; 244 struct work_struct lightbar_led_work; 245 246 struct asus_rfkill wlan; 247 struct asus_rfkill bluetooth; 248 struct asus_rfkill wimax; 249 struct asus_rfkill wwan3g; 250 struct asus_rfkill gps; 251 struct asus_rfkill uwb; 252 253 bool asus_hwmon_fan_manual_mode; 254 int asus_hwmon_num_fans; 255 int asus_hwmon_pwm; 256 257 struct hotplug_slot hotplug_slot; 258 struct mutex hotplug_lock; 259 struct mutex wmi_lock; 260 struct workqueue_struct *hotplug_workqueue; 261 struct work_struct hotplug_work; 262 263 struct asus_wmi_debug debug; 264 265 struct asus_wmi_driver *driver; 266 }; 267 268 static int asus_wmi_input_init(struct asus_wmi *asus) 269 { 270 int err; 271 272 asus->inputdev = input_allocate_device(); 273 if (!asus->inputdev) 274 return -ENOMEM; 275 276 asus->inputdev->name = asus->driver->input_name; 277 asus->inputdev->phys = asus->driver->input_phys; 278 asus->inputdev->id.bustype = BUS_HOST; 279 asus->inputdev->dev.parent = &asus->platform_device->dev; 280 set_bit(EV_REP, asus->inputdev->evbit); 281 282 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 283 if (err) 284 goto err_free_dev; 285 286 err = input_register_device(asus->inputdev); 287 if (err) 288 goto err_free_dev; 289 290 return 0; 291 292 err_free_dev: 293 input_free_device(asus->inputdev); 294 return err; 295 } 296 297 static void asus_wmi_input_exit(struct asus_wmi *asus) 298 { 299 if (asus->inputdev) 300 input_unregister_device(asus->inputdev); 301 302 asus->inputdev = NULL; 303 } 304 305 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, 306 u32 *retval) 307 { 308 struct bios_args args = { 309 .arg0 = arg0, 310 .arg1 = arg1, 311 }; 312 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 313 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 314 acpi_status status; 315 union acpi_object *obj; 316 u32 tmp = 0; 317 318 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 319 &input, &output); 320 321 if (ACPI_FAILURE(status)) 322 goto exit; 323 324 obj = (union acpi_object *)output.pointer; 325 if (obj && obj->type == ACPI_TYPE_INTEGER) 326 tmp = (u32) obj->integer.value; 327 328 if (retval) 329 *retval = tmp; 330 331 kfree(obj); 332 333 exit: 334 if (ACPI_FAILURE(status)) 335 return -EIO; 336 337 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 338 return -ENODEV; 339 340 return 0; 341 } 342 343 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 344 { 345 struct acpi_buffer input; 346 u64 phys_addr; 347 u32 retval; 348 u32 status = -1; 349 350 /* 351 * Copy to dma capable address otherwise memory corruption occurs as 352 * bios has to be able to access it. 353 */ 354 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL); 355 input.length = args.length; 356 if (!input.pointer) 357 return -ENOMEM; 358 phys_addr = virt_to_phys(input.pointer); 359 memcpy(input.pointer, args.pointer, args.length); 360 361 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 362 phys_addr, 0, &retval); 363 if (!status) 364 memcpy(args.pointer, input.pointer, args.length); 365 366 kfree(input.pointer); 367 if (status) 368 return -ENXIO; 369 370 return retval; 371 } 372 373 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 374 { 375 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 376 } 377 378 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 379 u32 *retval) 380 { 381 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 382 ctrl_param, retval); 383 } 384 385 /* Helper for special devices with magic return codes */ 386 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 387 u32 dev_id, u32 mask) 388 { 389 u32 retval = 0; 390 int err; 391 392 err = asus_wmi_get_devstate(asus, dev_id, &retval); 393 394 if (err < 0) 395 return err; 396 397 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 398 return -ENODEV; 399 400 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 401 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 402 return -ENODEV; 403 } 404 405 return retval & mask; 406 } 407 408 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 409 { 410 return asus_wmi_get_devstate_bits(asus, dev_id, 411 ASUS_WMI_DSTS_STATUS_BIT); 412 } 413 414 /* 415 * LEDs 416 */ 417 /* 418 * These functions actually update the LED's, and are called from a 419 * workqueue. By doing this as separate work rather than when the LED 420 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 421 * potentially bad time, such as a timer interrupt. 422 */ 423 static void tpd_led_update(struct work_struct *work) 424 { 425 int ctrl_param; 426 struct asus_wmi *asus; 427 428 asus = container_of(work, struct asus_wmi, tpd_led_work); 429 430 ctrl_param = asus->tpd_led_wk; 431 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 432 } 433 434 static void tpd_led_set(struct led_classdev *led_cdev, 435 enum led_brightness value) 436 { 437 struct asus_wmi *asus; 438 439 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 440 441 asus->tpd_led_wk = !!value; 442 queue_work(asus->led_workqueue, &asus->tpd_led_work); 443 } 444 445 static int read_tpd_led_state(struct asus_wmi *asus) 446 { 447 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 448 } 449 450 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 451 { 452 struct asus_wmi *asus; 453 454 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 455 456 return read_tpd_led_state(asus); 457 } 458 459 static void kbd_led_update(struct work_struct *work) 460 { 461 int ctrl_param = 0; 462 struct asus_wmi *asus; 463 464 asus = container_of(work, struct asus_wmi, kbd_led_work); 465 466 /* 467 * bits 0-2: level 468 * bit 7: light on/off 469 */ 470 if (asus->kbd_led_wk > 0) 471 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 472 473 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 474 led_classdev_notify_brightness_hw_changed(&asus->kbd_led, asus->kbd_led_wk); 475 } 476 477 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 478 { 479 int retval; 480 481 /* 482 * bits 0-2: level 483 * bit 7: light on/off 484 * bit 8-10: environment (0: dark, 1: normal, 2: light) 485 * bit 17: status unknown 486 */ 487 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 488 0xFFFF); 489 490 /* Unknown status is considered as off */ 491 if (retval == 0x8000) 492 retval = 0; 493 494 if (retval >= 0) { 495 if (level) 496 *level = retval & 0x7F; 497 if (env) 498 *env = (retval >> 8) & 0x7F; 499 retval = 0; 500 } 501 502 return retval; 503 } 504 505 static void do_kbd_led_set(struct led_classdev *led_cdev, int value) 506 { 507 struct asus_wmi *asus; 508 int max_level; 509 510 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 511 max_level = asus->kbd_led.max_brightness; 512 513 if (value > max_level) 514 value = max_level; 515 else if (value < 0) 516 value = 0; 517 518 asus->kbd_led_wk = value; 519 queue_work(asus->led_workqueue, &asus->kbd_led_work); 520 } 521 522 static void kbd_led_set(struct led_classdev *led_cdev, 523 enum led_brightness value) 524 { 525 do_kbd_led_set(led_cdev, value); 526 } 527 528 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 529 { 530 struct asus_wmi *asus; 531 int retval, value; 532 533 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 534 535 retval = kbd_led_read(asus, &value, NULL); 536 537 if (retval < 0) 538 return retval; 539 540 return value; 541 } 542 543 static int wlan_led_unknown_state(struct asus_wmi *asus) 544 { 545 u32 result; 546 547 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 548 549 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 550 } 551 552 static int wlan_led_presence(struct asus_wmi *asus) 553 { 554 u32 result; 555 556 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 557 558 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 559 } 560 561 static void wlan_led_update(struct work_struct *work) 562 { 563 int ctrl_param; 564 struct asus_wmi *asus; 565 566 asus = container_of(work, struct asus_wmi, wlan_led_work); 567 568 ctrl_param = asus->wlan_led_wk; 569 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 570 } 571 572 static void wlan_led_set(struct led_classdev *led_cdev, 573 enum led_brightness value) 574 { 575 struct asus_wmi *asus; 576 577 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 578 579 asus->wlan_led_wk = !!value; 580 queue_work(asus->led_workqueue, &asus->wlan_led_work); 581 } 582 583 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 584 { 585 struct asus_wmi *asus; 586 u32 result; 587 588 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 589 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 590 591 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 592 } 593 594 static void lightbar_led_update(struct work_struct *work) 595 { 596 struct asus_wmi *asus; 597 int ctrl_param; 598 599 asus = container_of(work, struct asus_wmi, lightbar_led_work); 600 601 ctrl_param = asus->lightbar_led_wk; 602 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 603 } 604 605 static void lightbar_led_set(struct led_classdev *led_cdev, 606 enum led_brightness value) 607 { 608 struct asus_wmi *asus; 609 610 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 611 612 asus->lightbar_led_wk = !!value; 613 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 614 } 615 616 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 617 { 618 struct asus_wmi *asus; 619 u32 result; 620 621 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 622 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 623 624 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 625 } 626 627 static int lightbar_led_presence(struct asus_wmi *asus) 628 { 629 u32 result; 630 631 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 632 633 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 634 } 635 636 static void asus_wmi_led_exit(struct asus_wmi *asus) 637 { 638 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 639 led_classdev_unregister(&asus->kbd_led); 640 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 641 led_classdev_unregister(&asus->tpd_led); 642 if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) 643 led_classdev_unregister(&asus->wlan_led); 644 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev)) 645 led_classdev_unregister(&asus->lightbar_led); 646 if (asus->led_workqueue) 647 destroy_workqueue(asus->led_workqueue); 648 } 649 650 static int asus_wmi_led_init(struct asus_wmi *asus) 651 { 652 int rv = 0, led_val; 653 654 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 655 if (!asus->led_workqueue) 656 return -ENOMEM; 657 658 if (read_tpd_led_state(asus) >= 0) { 659 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 660 661 asus->tpd_led.name = "asus::touchpad"; 662 asus->tpd_led.brightness_set = tpd_led_set; 663 asus->tpd_led.brightness_get = tpd_led_get; 664 asus->tpd_led.max_brightness = 1; 665 666 rv = led_classdev_register(&asus->platform_device->dev, 667 &asus->tpd_led); 668 if (rv) 669 goto error; 670 } 671 672 led_val = kbd_led_read(asus, NULL, NULL); 673 if (led_val >= 0) { 674 INIT_WORK(&asus->kbd_led_work, kbd_led_update); 675 676 asus->kbd_led_wk = led_val; 677 asus->kbd_led.name = "asus::kbd_backlight"; 678 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED; 679 asus->kbd_led.brightness_set = kbd_led_set; 680 asus->kbd_led.brightness_get = kbd_led_get; 681 asus->kbd_led.max_brightness = 3; 682 683 rv = led_classdev_register(&asus->platform_device->dev, 684 &asus->kbd_led); 685 if (rv) 686 goto error; 687 } 688 689 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) { 690 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 691 692 asus->wlan_led.name = "asus::wlan"; 693 asus->wlan_led.brightness_set = wlan_led_set; 694 if (!wlan_led_unknown_state(asus)) 695 asus->wlan_led.brightness_get = wlan_led_get; 696 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 697 asus->wlan_led.max_brightness = 1; 698 asus->wlan_led.default_trigger = "asus-wlan"; 699 700 rv = led_classdev_register(&asus->platform_device->dev, 701 &asus->wlan_led); 702 if (rv) 703 goto error; 704 } 705 706 if (lightbar_led_presence(asus)) { 707 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 708 709 asus->lightbar_led.name = "asus::lightbar"; 710 asus->lightbar_led.brightness_set = lightbar_led_set; 711 asus->lightbar_led.brightness_get = lightbar_led_get; 712 asus->lightbar_led.max_brightness = 1; 713 714 rv = led_classdev_register(&asus->platform_device->dev, 715 &asus->lightbar_led); 716 } 717 718 error: 719 if (rv) 720 asus_wmi_led_exit(asus); 721 722 return rv; 723 } 724 725 726 /* 727 * PCI hotplug (for wlan rfkill) 728 */ 729 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 730 { 731 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 732 733 if (result < 0) 734 return false; 735 return !result; 736 } 737 738 static void asus_rfkill_hotplug(struct asus_wmi *asus) 739 { 740 struct pci_dev *dev; 741 struct pci_bus *bus; 742 bool blocked; 743 bool absent; 744 u32 l; 745 746 mutex_lock(&asus->wmi_lock); 747 blocked = asus_wlan_rfkill_blocked(asus); 748 mutex_unlock(&asus->wmi_lock); 749 750 mutex_lock(&asus->hotplug_lock); 751 pci_lock_rescan_remove(); 752 753 if (asus->wlan.rfkill) 754 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 755 756 if (asus->hotplug_slot.ops) { 757 bus = pci_find_bus(0, 1); 758 if (!bus) { 759 pr_warn("Unable to find PCI bus 1?\n"); 760 goto out_unlock; 761 } 762 763 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 764 pr_err("Unable to read PCI config space?\n"); 765 goto out_unlock; 766 } 767 absent = (l == 0xffffffff); 768 769 if (blocked != absent) { 770 pr_warn("BIOS says wireless lan is %s, " 771 "but the pci device is %s\n", 772 blocked ? "blocked" : "unblocked", 773 absent ? "absent" : "present"); 774 pr_warn("skipped wireless hotplug as probably " 775 "inappropriate for this model\n"); 776 goto out_unlock; 777 } 778 779 if (!blocked) { 780 dev = pci_get_slot(bus, 0); 781 if (dev) { 782 /* Device already present */ 783 pci_dev_put(dev); 784 goto out_unlock; 785 } 786 dev = pci_scan_single_device(bus, 0); 787 if (dev) { 788 pci_bus_assign_resources(bus); 789 pci_bus_add_device(dev); 790 } 791 } else { 792 dev = pci_get_slot(bus, 0); 793 if (dev) { 794 pci_stop_and_remove_bus_device(dev); 795 pci_dev_put(dev); 796 } 797 } 798 } 799 800 out_unlock: 801 pci_unlock_rescan_remove(); 802 mutex_unlock(&asus->hotplug_lock); 803 } 804 805 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 806 { 807 struct asus_wmi *asus = data; 808 809 if (event != ACPI_NOTIFY_BUS_CHECK) 810 return; 811 812 /* 813 * We can't call directly asus_rfkill_hotplug because most 814 * of the time WMBC is still being executed and not reetrant. 815 * There is currently no way to tell ACPICA that we want this 816 * method to be serialized, we schedule a asus_rfkill_hotplug 817 * call later, in a safer context. 818 */ 819 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 820 } 821 822 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 823 { 824 acpi_status status; 825 acpi_handle handle; 826 827 status = acpi_get_handle(NULL, node, &handle); 828 829 if (ACPI_SUCCESS(status)) { 830 status = acpi_install_notify_handler(handle, 831 ACPI_SYSTEM_NOTIFY, 832 asus_rfkill_notify, asus); 833 if (ACPI_FAILURE(status)) 834 pr_warn("Failed to register notify on %s\n", node); 835 } else 836 return -ENODEV; 837 838 return 0; 839 } 840 841 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 842 { 843 acpi_status status = AE_OK; 844 acpi_handle handle; 845 846 status = acpi_get_handle(NULL, node, &handle); 847 848 if (ACPI_SUCCESS(status)) { 849 status = acpi_remove_notify_handler(handle, 850 ACPI_SYSTEM_NOTIFY, 851 asus_rfkill_notify); 852 if (ACPI_FAILURE(status)) 853 pr_err("Error removing rfkill notify handler %s\n", 854 node); 855 } 856 } 857 858 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 859 u8 *value) 860 { 861 struct asus_wmi *asus = container_of(hotplug_slot, 862 struct asus_wmi, hotplug_slot); 863 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 864 865 if (result < 0) 866 return result; 867 868 *value = !!result; 869 return 0; 870 } 871 872 static const struct hotplug_slot_ops asus_hotplug_slot_ops = { 873 .get_adapter_status = asus_get_adapter_status, 874 .get_power_status = asus_get_adapter_status, 875 }; 876 877 static void asus_hotplug_work(struct work_struct *work) 878 { 879 struct asus_wmi *asus; 880 881 asus = container_of(work, struct asus_wmi, hotplug_work); 882 asus_rfkill_hotplug(asus); 883 } 884 885 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 886 { 887 int ret = -ENOMEM; 888 struct pci_bus *bus = pci_find_bus(0, 1); 889 890 if (!bus) { 891 pr_err("Unable to find wifi PCI bus\n"); 892 return -ENODEV; 893 } 894 895 asus->hotplug_workqueue = 896 create_singlethread_workqueue("hotplug_workqueue"); 897 if (!asus->hotplug_workqueue) 898 goto error_workqueue; 899 900 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 901 902 asus->hotplug_slot.ops = &asus_hotplug_slot_ops; 903 904 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi"); 905 if (ret) { 906 pr_err("Unable to register hotplug slot - %d\n", ret); 907 goto error_register; 908 } 909 910 return 0; 911 912 error_register: 913 asus->hotplug_slot.ops = NULL; 914 destroy_workqueue(asus->hotplug_workqueue); 915 error_workqueue: 916 return ret; 917 } 918 919 /* 920 * Rfkill devices 921 */ 922 static int asus_rfkill_set(void *data, bool blocked) 923 { 924 struct asus_rfkill *priv = data; 925 u32 ctrl_param = !blocked; 926 u32 dev_id = priv->dev_id; 927 928 /* 929 * If the user bit is set, BIOS can't set and record the wlan status, 930 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 931 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 932 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 933 * while setting the wlan status through WMI. 934 * This is also the behavior that windows app will do. 935 */ 936 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 937 priv->asus->driver->wlan_ctrl_by_user) 938 dev_id = ASUS_WMI_DEVID_WLAN_LED; 939 940 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 941 } 942 943 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 944 { 945 struct asus_rfkill *priv = data; 946 int result; 947 948 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 949 950 if (result < 0) 951 return; 952 953 rfkill_set_sw_state(priv->rfkill, !result); 954 } 955 956 static int asus_rfkill_wlan_set(void *data, bool blocked) 957 { 958 struct asus_rfkill *priv = data; 959 struct asus_wmi *asus = priv->asus; 960 int ret; 961 962 /* 963 * This handler is enabled only if hotplug is enabled. 964 * In this case, the asus_wmi_set_devstate() will 965 * trigger a wmi notification and we need to wait 966 * this call to finish before being able to call 967 * any wmi method 968 */ 969 mutex_lock(&asus->wmi_lock); 970 ret = asus_rfkill_set(data, blocked); 971 mutex_unlock(&asus->wmi_lock); 972 return ret; 973 } 974 975 static const struct rfkill_ops asus_rfkill_wlan_ops = { 976 .set_block = asus_rfkill_wlan_set, 977 .query = asus_rfkill_query, 978 }; 979 980 static const struct rfkill_ops asus_rfkill_ops = { 981 .set_block = asus_rfkill_set, 982 .query = asus_rfkill_query, 983 }; 984 985 static int asus_new_rfkill(struct asus_wmi *asus, 986 struct asus_rfkill *arfkill, 987 const char *name, enum rfkill_type type, int dev_id) 988 { 989 int result = asus_wmi_get_devstate_simple(asus, dev_id); 990 struct rfkill **rfkill = &arfkill->rfkill; 991 992 if (result < 0) 993 return result; 994 995 arfkill->dev_id = dev_id; 996 arfkill->asus = asus; 997 998 if (dev_id == ASUS_WMI_DEVID_WLAN && 999 asus->driver->quirks->hotplug_wireless) 1000 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1001 &asus_rfkill_wlan_ops, arfkill); 1002 else 1003 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1004 &asus_rfkill_ops, arfkill); 1005 1006 if (!*rfkill) 1007 return -EINVAL; 1008 1009 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1010 (asus->driver->quirks->wapf > 0)) 1011 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1012 1013 rfkill_init_sw_state(*rfkill, !result); 1014 result = rfkill_register(*rfkill); 1015 if (result) { 1016 rfkill_destroy(*rfkill); 1017 *rfkill = NULL; 1018 return result; 1019 } 1020 return 0; 1021 } 1022 1023 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1024 { 1025 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1026 return; 1027 1028 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1029 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1030 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1031 if (asus->wlan.rfkill) { 1032 rfkill_unregister(asus->wlan.rfkill); 1033 rfkill_destroy(asus->wlan.rfkill); 1034 asus->wlan.rfkill = NULL; 1035 } 1036 /* 1037 * Refresh pci hotplug in case the rfkill state was changed after 1038 * asus_unregister_rfkill_notifier() 1039 */ 1040 asus_rfkill_hotplug(asus); 1041 if (asus->hotplug_slot.ops) 1042 pci_hp_deregister(&asus->hotplug_slot); 1043 if (asus->hotplug_workqueue) 1044 destroy_workqueue(asus->hotplug_workqueue); 1045 1046 if (asus->bluetooth.rfkill) { 1047 rfkill_unregister(asus->bluetooth.rfkill); 1048 rfkill_destroy(asus->bluetooth.rfkill); 1049 asus->bluetooth.rfkill = NULL; 1050 } 1051 if (asus->wimax.rfkill) { 1052 rfkill_unregister(asus->wimax.rfkill); 1053 rfkill_destroy(asus->wimax.rfkill); 1054 asus->wimax.rfkill = NULL; 1055 } 1056 if (asus->wwan3g.rfkill) { 1057 rfkill_unregister(asus->wwan3g.rfkill); 1058 rfkill_destroy(asus->wwan3g.rfkill); 1059 asus->wwan3g.rfkill = NULL; 1060 } 1061 if (asus->gps.rfkill) { 1062 rfkill_unregister(asus->gps.rfkill); 1063 rfkill_destroy(asus->gps.rfkill); 1064 asus->gps.rfkill = NULL; 1065 } 1066 if (asus->uwb.rfkill) { 1067 rfkill_unregister(asus->uwb.rfkill); 1068 rfkill_destroy(asus->uwb.rfkill); 1069 asus->uwb.rfkill = NULL; 1070 } 1071 } 1072 1073 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1074 { 1075 int result = 0; 1076 1077 mutex_init(&asus->hotplug_lock); 1078 mutex_init(&asus->wmi_lock); 1079 1080 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1081 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1082 1083 if (result && result != -ENODEV) 1084 goto exit; 1085 1086 result = asus_new_rfkill(asus, &asus->bluetooth, 1087 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1088 ASUS_WMI_DEVID_BLUETOOTH); 1089 1090 if (result && result != -ENODEV) 1091 goto exit; 1092 1093 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1094 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1095 1096 if (result && result != -ENODEV) 1097 goto exit; 1098 1099 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1100 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1101 1102 if (result && result != -ENODEV) 1103 goto exit; 1104 1105 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1106 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1107 1108 if (result && result != -ENODEV) 1109 goto exit; 1110 1111 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1112 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1113 1114 if (result && result != -ENODEV) 1115 goto exit; 1116 1117 if (!asus->driver->quirks->hotplug_wireless) 1118 goto exit; 1119 1120 result = asus_setup_pci_hotplug(asus); 1121 /* 1122 * If we get -EBUSY then something else is handling the PCI hotplug - 1123 * don't fail in this case 1124 */ 1125 if (result == -EBUSY) 1126 result = 0; 1127 1128 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1129 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1130 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1131 /* 1132 * Refresh pci hotplug in case the rfkill state was changed during 1133 * setup. 1134 */ 1135 asus_rfkill_hotplug(asus); 1136 1137 exit: 1138 if (result && result != -ENODEV) 1139 asus_wmi_rfkill_exit(asus); 1140 1141 if (result == -ENODEV) 1142 result = 0; 1143 1144 return result; 1145 } 1146 1147 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1148 { 1149 struct pci_dev *xhci_pdev; 1150 u32 orig_ports_available; 1151 u32 ports_available = asus->driver->quirks->xusb2pr; 1152 1153 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1154 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1155 NULL); 1156 1157 if (!xhci_pdev) 1158 return; 1159 1160 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1161 &orig_ports_available); 1162 1163 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1164 cpu_to_le32(ports_available)); 1165 1166 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1167 orig_ports_available, ports_available); 1168 } 1169 1170 /* 1171 * Some devices dont support or have borcken get_als method 1172 * but still support set method. 1173 */ 1174 static void asus_wmi_set_als(void) 1175 { 1176 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1177 } 1178 1179 /* 1180 * Hwmon device 1181 */ 1182 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1183 int *speed) 1184 { 1185 struct fan_args args = { 1186 .agfn.len = sizeof(args), 1187 .agfn.mfun = ASUS_FAN_MFUN, 1188 .agfn.sfun = ASUS_FAN_SFUN_READ, 1189 .fan = fan, 1190 .speed = 0, 1191 }; 1192 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1193 int status; 1194 1195 if (fan != 1) 1196 return -EINVAL; 1197 1198 status = asus_wmi_evaluate_method_agfn(input); 1199 1200 if (status || args.agfn.err) 1201 return -ENXIO; 1202 1203 if (speed) 1204 *speed = args.speed; 1205 1206 return 0; 1207 } 1208 1209 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1210 int *speed) 1211 { 1212 struct fan_args args = { 1213 .agfn.len = sizeof(args), 1214 .agfn.mfun = ASUS_FAN_MFUN, 1215 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1216 .fan = fan, 1217 .speed = speed ? *speed : 0, 1218 }; 1219 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1220 int status; 1221 1222 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1223 if (fan != 1 && fan != 0) 1224 return -EINVAL; 1225 1226 status = asus_wmi_evaluate_method_agfn(input); 1227 1228 if (status || args.agfn.err) 1229 return -ENXIO; 1230 1231 if (speed && fan == 1) 1232 asus->asus_hwmon_pwm = *speed; 1233 1234 return 0; 1235 } 1236 1237 /* 1238 * Check if we can read the speed of one fan. If true we assume we can also 1239 * control it. 1240 */ 1241 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans) 1242 { 1243 int status; 1244 int speed = 0; 1245 1246 *num_fans = 0; 1247 1248 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed); 1249 if (!status) 1250 *num_fans = 1; 1251 1252 return 0; 1253 } 1254 1255 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus) 1256 { 1257 int status; 1258 1259 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL); 1260 if (status) 1261 return -ENXIO; 1262 1263 asus->asus_hwmon_fan_manual_mode = false; 1264 1265 return 0; 1266 } 1267 1268 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan) 1269 { 1270 struct asus_wmi *asus = dev_get_drvdata(dev); 1271 int value; 1272 int ret; 1273 1274 /* no speed readable on manual mode */ 1275 if (asus->asus_hwmon_fan_manual_mode) 1276 return -ENXIO; 1277 1278 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value); 1279 if (ret) { 1280 pr_warn("reading fan speed failed: %d\n", ret); 1281 return -ENXIO; 1282 } 1283 1284 return value; 1285 } 1286 1287 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value) 1288 { 1289 int err; 1290 1291 if (asus->asus_hwmon_pwm >= 0) { 1292 *value = asus->asus_hwmon_pwm; 1293 return; 1294 } 1295 1296 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value); 1297 if (err < 0) 1298 return; 1299 1300 *value &= 0xFF; 1301 1302 if (*value == 1) /* Low Speed */ 1303 *value = 85; 1304 else if (*value == 2) 1305 *value = 170; 1306 else if (*value == 3) 1307 *value = 255; 1308 else if (*value) { 1309 pr_err("Unknown fan speed %#x\n", *value); 1310 *value = -1; 1311 } 1312 } 1313 1314 static ssize_t pwm1_show(struct device *dev, 1315 struct device_attribute *attr, 1316 char *buf) 1317 { 1318 struct asus_wmi *asus = dev_get_drvdata(dev); 1319 int value; 1320 1321 asus_hwmon_pwm_show(asus, 0, &value); 1322 1323 return sprintf(buf, "%d\n", value); 1324 } 1325 1326 static ssize_t pwm1_store(struct device *dev, 1327 struct device_attribute *attr, 1328 const char *buf, size_t count) { 1329 struct asus_wmi *asus = dev_get_drvdata(dev); 1330 int value; 1331 int state; 1332 int ret; 1333 1334 ret = kstrtouint(buf, 10, &value); 1335 1336 if (ret) 1337 return ret; 1338 1339 value = clamp(value, 0, 255); 1340 1341 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value); 1342 if (state) 1343 pr_warn("Setting fan speed failed: %d\n", state); 1344 else 1345 asus->asus_hwmon_fan_manual_mode = true; 1346 1347 return count; 1348 } 1349 1350 static ssize_t fan1_input_show(struct device *dev, 1351 struct device_attribute *attr, 1352 char *buf) 1353 { 1354 int value = asus_hwmon_fan_rpm_show(dev, 0); 1355 1356 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1357 1358 } 1359 1360 static ssize_t pwm1_enable_show(struct device *dev, 1361 struct device_attribute *attr, 1362 char *buf) 1363 { 1364 struct asus_wmi *asus = dev_get_drvdata(dev); 1365 1366 if (asus->asus_hwmon_fan_manual_mode) 1367 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL); 1368 1369 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO); 1370 } 1371 1372 static ssize_t pwm1_enable_store(struct device *dev, 1373 struct device_attribute *attr, 1374 const char *buf, size_t count) 1375 { 1376 struct asus_wmi *asus = dev_get_drvdata(dev); 1377 int status = 0; 1378 int state; 1379 int ret; 1380 1381 ret = kstrtouint(buf, 10, &state); 1382 1383 if (ret) 1384 return ret; 1385 1386 if (state == ASUS_FAN_CTRL_MANUAL) 1387 asus->asus_hwmon_fan_manual_mode = true; 1388 else 1389 status = asus_hwmon_fan_set_auto(asus); 1390 1391 if (status) 1392 return status; 1393 1394 return count; 1395 } 1396 1397 static ssize_t fan1_label_show(struct device *dev, 1398 struct device_attribute *attr, 1399 char *buf) 1400 { 1401 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1402 } 1403 1404 static ssize_t asus_hwmon_temp1(struct device *dev, 1405 struct device_attribute *attr, 1406 char *buf) 1407 { 1408 struct asus_wmi *asus = dev_get_drvdata(dev); 1409 u32 value; 1410 int err; 1411 1412 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1413 1414 if (err < 0) 1415 return err; 1416 1417 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000; 1418 1419 return sprintf(buf, "%d\n", value); 1420 } 1421 1422 /* Fan1 */ 1423 static DEVICE_ATTR_RW(pwm1); 1424 static DEVICE_ATTR_RW(pwm1_enable); 1425 static DEVICE_ATTR_RO(fan1_input); 1426 static DEVICE_ATTR_RO(fan1_label); 1427 1428 /* Temperature */ 1429 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1430 1431 static struct attribute *hwmon_attributes[] = { 1432 &dev_attr_pwm1.attr, 1433 &dev_attr_pwm1_enable.attr, 1434 &dev_attr_fan1_input.attr, 1435 &dev_attr_fan1_label.attr, 1436 1437 &dev_attr_temp1_input.attr, 1438 NULL 1439 }; 1440 1441 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1442 struct attribute *attr, int idx) 1443 { 1444 struct device *dev = container_of(kobj, struct device, kobj); 1445 struct platform_device *pdev = to_platform_device(dev->parent); 1446 struct asus_wmi *asus = platform_get_drvdata(pdev); 1447 int dev_id = -1; 1448 int fan_attr = -1; 1449 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1450 bool ok = true; 1451 1452 if (attr == &dev_attr_pwm1.attr) 1453 dev_id = ASUS_WMI_DEVID_FAN_CTRL; 1454 else if (attr == &dev_attr_temp1_input.attr) 1455 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL; 1456 1457 1458 if (attr == &dev_attr_fan1_input.attr 1459 || attr == &dev_attr_fan1_label.attr 1460 || attr == &dev_attr_pwm1.attr 1461 || attr == &dev_attr_pwm1_enable.attr) { 1462 fan_attr = 1; 1463 } 1464 1465 if (dev_id != -1) { 1466 int err = asus_wmi_get_devstate(asus, dev_id, &value); 1467 1468 if (err < 0 && fan_attr == -1) 1469 return 0; /* can't return negative here */ 1470 } 1471 1472 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) { 1473 /* 1474 * We need to find a better way, probably using sfun, 1475 * bits or spec ... 1476 * Currently we disable it if: 1477 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1478 * - reverved bits are non-zero 1479 * - sfun and presence bit are not set 1480 */ 1481 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1482 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))) 1483 ok = false; 1484 else 1485 ok = fan_attr <= asus->asus_hwmon_num_fans; 1486 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) { 1487 /* If value is zero, something is clearly wrong */ 1488 if (!value) 1489 ok = false; 1490 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) { 1491 ok = true; 1492 } else { 1493 ok = false; 1494 } 1495 1496 return ok ? attr->mode : 0; 1497 } 1498 1499 static const struct attribute_group hwmon_attribute_group = { 1500 .is_visible = asus_hwmon_sysfs_is_visible, 1501 .attrs = hwmon_attributes 1502 }; 1503 __ATTRIBUTE_GROUPS(hwmon_attribute); 1504 1505 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1506 { 1507 struct device *hwmon; 1508 1509 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev, 1510 "asus", asus, 1511 hwmon_attribute_groups); 1512 if (IS_ERR(hwmon)) { 1513 pr_err("Could not register asus hwmon device\n"); 1514 return PTR_ERR(hwmon); 1515 } 1516 return 0; 1517 } 1518 1519 /* 1520 * Backlight 1521 */ 1522 static int read_backlight_power(struct asus_wmi *asus) 1523 { 1524 int ret; 1525 if (asus->driver->quirks->store_backlight_power) 1526 ret = !asus->driver->panel_power; 1527 else 1528 ret = asus_wmi_get_devstate_simple(asus, 1529 ASUS_WMI_DEVID_BACKLIGHT); 1530 1531 if (ret < 0) 1532 return ret; 1533 1534 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1535 } 1536 1537 static int read_brightness_max(struct asus_wmi *asus) 1538 { 1539 u32 retval; 1540 int err; 1541 1542 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1543 1544 if (err < 0) 1545 return err; 1546 1547 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1548 retval >>= 8; 1549 1550 if (!retval) 1551 return -ENODEV; 1552 1553 return retval; 1554 } 1555 1556 static int read_brightness(struct backlight_device *bd) 1557 { 1558 struct asus_wmi *asus = bl_get_data(bd); 1559 u32 retval; 1560 int err; 1561 1562 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1563 1564 if (err < 0) 1565 return err; 1566 1567 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1568 } 1569 1570 static u32 get_scalar_command(struct backlight_device *bd) 1571 { 1572 struct asus_wmi *asus = bl_get_data(bd); 1573 u32 ctrl_param = 0; 1574 1575 if ((asus->driver->brightness < bd->props.brightness) || 1576 bd->props.brightness == bd->props.max_brightness) 1577 ctrl_param = 0x00008001; 1578 else if ((asus->driver->brightness > bd->props.brightness) || 1579 bd->props.brightness == 0) 1580 ctrl_param = 0x00008000; 1581 1582 asus->driver->brightness = bd->props.brightness; 1583 1584 return ctrl_param; 1585 } 1586 1587 static int update_bl_status(struct backlight_device *bd) 1588 { 1589 struct asus_wmi *asus = bl_get_data(bd); 1590 u32 ctrl_param; 1591 int power, err = 0; 1592 1593 power = read_backlight_power(asus); 1594 if (power != -ENODEV && bd->props.power != power) { 1595 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1596 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1597 ctrl_param, NULL); 1598 if (asus->driver->quirks->store_backlight_power) 1599 asus->driver->panel_power = bd->props.power; 1600 1601 /* When using scalar brightness, updating the brightness 1602 * will mess with the backlight power */ 1603 if (asus->driver->quirks->scalar_panel_brightness) 1604 return err; 1605 } 1606 1607 if (asus->driver->quirks->scalar_panel_brightness) 1608 ctrl_param = get_scalar_command(bd); 1609 else 1610 ctrl_param = bd->props.brightness; 1611 1612 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1613 ctrl_param, NULL); 1614 1615 return err; 1616 } 1617 1618 static const struct backlight_ops asus_wmi_bl_ops = { 1619 .get_brightness = read_brightness, 1620 .update_status = update_bl_status, 1621 }; 1622 1623 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1624 { 1625 struct backlight_device *bd = asus->backlight_device; 1626 int old = bd->props.brightness; 1627 int new = old; 1628 1629 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1630 new = code - NOTIFY_BRNUP_MIN + 1; 1631 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1632 new = code - NOTIFY_BRNDOWN_MIN; 1633 1634 bd->props.brightness = new; 1635 backlight_update_status(bd); 1636 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1637 1638 return old; 1639 } 1640 1641 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1642 { 1643 struct backlight_device *bd; 1644 struct backlight_properties props; 1645 int max; 1646 int power; 1647 1648 max = read_brightness_max(asus); 1649 if (max < 0) 1650 return max; 1651 1652 power = read_backlight_power(asus); 1653 1654 if (power == -ENODEV) 1655 power = FB_BLANK_UNBLANK; 1656 else if (power < 0) 1657 return power; 1658 1659 memset(&props, 0, sizeof(struct backlight_properties)); 1660 props.type = BACKLIGHT_PLATFORM; 1661 props.max_brightness = max; 1662 bd = backlight_device_register(asus->driver->name, 1663 &asus->platform_device->dev, asus, 1664 &asus_wmi_bl_ops, &props); 1665 if (IS_ERR(bd)) { 1666 pr_err("Could not register backlight device\n"); 1667 return PTR_ERR(bd); 1668 } 1669 1670 asus->backlight_device = bd; 1671 1672 if (asus->driver->quirks->store_backlight_power) 1673 asus->driver->panel_power = power; 1674 1675 bd->props.brightness = read_brightness(bd); 1676 bd->props.power = power; 1677 backlight_update_status(bd); 1678 1679 asus->driver->brightness = bd->props.brightness; 1680 1681 return 0; 1682 } 1683 1684 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1685 { 1686 backlight_device_unregister(asus->backlight_device); 1687 1688 asus->backlight_device = NULL; 1689 } 1690 1691 static int is_display_toggle(int code) 1692 { 1693 /* display toggle keys */ 1694 if ((code >= 0x61 && code <= 0x67) || 1695 (code >= 0x8c && code <= 0x93) || 1696 (code >= 0xa0 && code <= 0xa7) || 1697 (code >= 0xd0 && code <= 0xd5)) 1698 return 1; 1699 1700 return 0; 1701 } 1702 1703 static void asus_wmi_notify(u32 value, void *context) 1704 { 1705 struct asus_wmi *asus = context; 1706 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1707 union acpi_object *obj; 1708 acpi_status status; 1709 int code; 1710 int orig_code; 1711 unsigned int key_value = 1; 1712 bool autorelease = 1; 1713 1714 status = wmi_get_event_data(value, &response); 1715 if (status != AE_OK) { 1716 pr_err("bad event status 0x%x\n", status); 1717 return; 1718 } 1719 1720 obj = (union acpi_object *)response.pointer; 1721 1722 if (!obj || obj->type != ACPI_TYPE_INTEGER) 1723 goto exit; 1724 1725 code = obj->integer.value; 1726 orig_code = code; 1727 1728 if (asus->driver->key_filter) { 1729 asus->driver->key_filter(asus->driver, &code, &key_value, 1730 &autorelease); 1731 if (code == ASUS_WMI_KEY_IGNORE) 1732 goto exit; 1733 } 1734 1735 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1736 code = ASUS_WMI_BRN_UP; 1737 else if (code >= NOTIFY_BRNDOWN_MIN && 1738 code <= NOTIFY_BRNDOWN_MAX) 1739 code = ASUS_WMI_BRN_DOWN; 1740 1741 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 1742 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 1743 asus_wmi_backlight_notify(asus, orig_code); 1744 goto exit; 1745 } 1746 } 1747 1748 if (code == NOTIFY_KBD_BRTUP) { 1749 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1); 1750 goto exit; 1751 } 1752 if (code == NOTIFY_KBD_BRTDWN) { 1753 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk - 1); 1754 goto exit; 1755 } 1756 if (code == NOTIFY_KBD_BRTTOGGLE) { 1757 if (asus->kbd_led_wk == asus->kbd_led.max_brightness) 1758 do_kbd_led_set(&asus->kbd_led, 0); 1759 else 1760 do_kbd_led_set(&asus->kbd_led, asus->kbd_led_wk + 1); 1761 goto exit; 1762 } 1763 1764 if (is_display_toggle(code) && 1765 asus->driver->quirks->no_display_toggle) 1766 goto exit; 1767 1768 if (!sparse_keymap_report_event(asus->inputdev, code, 1769 key_value, autorelease)) 1770 pr_info("Unknown key %x pressed\n", code); 1771 1772 exit: 1773 kfree(obj); 1774 } 1775 1776 /* 1777 * Sys helpers 1778 */ 1779 static int parse_arg(const char *buf, unsigned long count, int *val) 1780 { 1781 if (!count) 1782 return 0; 1783 if (sscanf(buf, "%i", val) != 1) 1784 return -EINVAL; 1785 return count; 1786 } 1787 1788 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1789 const char *buf, size_t count) 1790 { 1791 u32 retval; 1792 int rv, err, value; 1793 1794 value = asus_wmi_get_devstate_simple(asus, devid); 1795 if (value < 0) 1796 return value; 1797 1798 rv = parse_arg(buf, count, &value); 1799 err = asus_wmi_set_devstate(devid, value, &retval); 1800 1801 if (err < 0) 1802 return err; 1803 1804 return rv; 1805 } 1806 1807 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1808 { 1809 int value = asus_wmi_get_devstate_simple(asus, devid); 1810 1811 if (value < 0) 1812 return value; 1813 1814 return sprintf(buf, "%d\n", value); 1815 } 1816 1817 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1818 static ssize_t show_##_name(struct device *dev, \ 1819 struct device_attribute *attr, \ 1820 char *buf) \ 1821 { \ 1822 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1823 \ 1824 return show_sys_wmi(asus, _cm, buf); \ 1825 } \ 1826 static ssize_t store_##_name(struct device *dev, \ 1827 struct device_attribute *attr, \ 1828 const char *buf, size_t count) \ 1829 { \ 1830 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1831 \ 1832 return store_sys_wmi(asus, _cm, buf, count); \ 1833 } \ 1834 static struct device_attribute dev_attr_##_name = { \ 1835 .attr = { \ 1836 .name = __stringify(_name), \ 1837 .mode = _mode }, \ 1838 .show = show_##_name, \ 1839 .store = store_##_name, \ 1840 } 1841 1842 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1843 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1844 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1845 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1846 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 1847 1848 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 1849 const char *buf, size_t count) 1850 { 1851 int value, rv; 1852 1853 if (!count || sscanf(buf, "%i", &value) != 1) 1854 return -EINVAL; 1855 if (value < 0 || value > 2) 1856 return -EINVAL; 1857 1858 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1859 if (rv < 0) 1860 return rv; 1861 1862 return count; 1863 } 1864 1865 static DEVICE_ATTR_WO(cpufv); 1866 1867 static struct attribute *platform_attributes[] = { 1868 &dev_attr_cpufv.attr, 1869 &dev_attr_camera.attr, 1870 &dev_attr_cardr.attr, 1871 &dev_attr_touchpad.attr, 1872 &dev_attr_lid_resume.attr, 1873 &dev_attr_als_enable.attr, 1874 NULL 1875 }; 1876 1877 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1878 struct attribute *attr, int idx) 1879 { 1880 struct device *dev = container_of(kobj, struct device, kobj); 1881 struct asus_wmi *asus = dev_get_drvdata(dev); 1882 bool ok = true; 1883 int devid = -1; 1884 1885 if (attr == &dev_attr_camera.attr) 1886 devid = ASUS_WMI_DEVID_CAMERA; 1887 else if (attr == &dev_attr_cardr.attr) 1888 devid = ASUS_WMI_DEVID_CARDREADER; 1889 else if (attr == &dev_attr_touchpad.attr) 1890 devid = ASUS_WMI_DEVID_TOUCHPAD; 1891 else if (attr == &dev_attr_lid_resume.attr) 1892 devid = ASUS_WMI_DEVID_LID_RESUME; 1893 else if (attr == &dev_attr_als_enable.attr) 1894 devid = ASUS_WMI_DEVID_ALS_ENABLE; 1895 1896 if (devid != -1) 1897 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1898 1899 return ok ? attr->mode : 0; 1900 } 1901 1902 static const struct attribute_group platform_attribute_group = { 1903 .is_visible = asus_sysfs_is_visible, 1904 .attrs = platform_attributes 1905 }; 1906 1907 static void asus_wmi_sysfs_exit(struct platform_device *device) 1908 { 1909 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1910 } 1911 1912 static int asus_wmi_sysfs_init(struct platform_device *device) 1913 { 1914 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1915 } 1916 1917 /* 1918 * Platform device 1919 */ 1920 static int asus_wmi_platform_init(struct asus_wmi *asus) 1921 { 1922 int rv; 1923 1924 /* INIT enable hotkeys on some models */ 1925 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1926 pr_info("Initialization: %#x\n", rv); 1927 1928 /* We don't know yet what to do with this version... */ 1929 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1930 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 1931 asus->spec = rv; 1932 } 1933 1934 /* 1935 * The SFUN method probably allows the original driver to get the list 1936 * of features supported by a given model. For now, 0x0100 or 0x0800 1937 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1938 * The significance of others is yet to be found. 1939 */ 1940 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1941 pr_info("SFUN value: %#x\n", rv); 1942 asus->sfun = rv; 1943 } 1944 1945 /* 1946 * Eee PC and Notebooks seems to have different method_id for DSTS, 1947 * but it may also be related to the BIOS's SPEC. 1948 * Note, on most Eeepc, there is no way to check if a method exist 1949 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1950 * but once again, SPEC may probably be used for that kind of things. 1951 */ 1952 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1953 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1954 else 1955 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1956 1957 /* CWAP allow to define the behavior of the Fn+F2 key, 1958 * this method doesn't seems to be present on Eee PCs */ 1959 if (asus->driver->quirks->wapf >= 0) 1960 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1961 asus->driver->quirks->wapf, NULL); 1962 1963 return asus_wmi_sysfs_init(asus->platform_device); 1964 } 1965 1966 static void asus_wmi_platform_exit(struct asus_wmi *asus) 1967 { 1968 asus_wmi_sysfs_exit(asus->platform_device); 1969 } 1970 1971 /* 1972 * debugfs 1973 */ 1974 struct asus_wmi_debugfs_node { 1975 struct asus_wmi *asus; 1976 char *name; 1977 int (*show) (struct seq_file *m, void *data); 1978 }; 1979 1980 static int show_dsts(struct seq_file *m, void *data) 1981 { 1982 struct asus_wmi *asus = m->private; 1983 int err; 1984 u32 retval = -1; 1985 1986 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1987 1988 if (err < 0) 1989 return err; 1990 1991 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1992 1993 return 0; 1994 } 1995 1996 static int show_devs(struct seq_file *m, void *data) 1997 { 1998 struct asus_wmi *asus = m->private; 1999 int err; 2000 u32 retval = -1; 2001 2002 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2003 &retval); 2004 2005 if (err < 0) 2006 return err; 2007 2008 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2009 asus->debug.ctrl_param, retval); 2010 2011 return 0; 2012 } 2013 2014 static int show_call(struct seq_file *m, void *data) 2015 { 2016 struct asus_wmi *asus = m->private; 2017 struct bios_args args = { 2018 .arg0 = asus->debug.dev_id, 2019 .arg1 = asus->debug.ctrl_param, 2020 }; 2021 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2022 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2023 union acpi_object *obj; 2024 acpi_status status; 2025 2026 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2027 0, asus->debug.method_id, 2028 &input, &output); 2029 2030 if (ACPI_FAILURE(status)) 2031 return -EIO; 2032 2033 obj = (union acpi_object *)output.pointer; 2034 if (obj && obj->type == ACPI_TYPE_INTEGER) 2035 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2036 asus->debug.dev_id, asus->debug.ctrl_param, 2037 (u32) obj->integer.value); 2038 else 2039 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2040 asus->debug.dev_id, asus->debug.ctrl_param, 2041 obj ? obj->type : -1); 2042 2043 kfree(obj); 2044 2045 return 0; 2046 } 2047 2048 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2049 {NULL, "devs", show_devs}, 2050 {NULL, "dsts", show_dsts}, 2051 {NULL, "call", show_call}, 2052 }; 2053 2054 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2055 { 2056 struct asus_wmi_debugfs_node *node = inode->i_private; 2057 2058 return single_open(file, node->show, node->asus); 2059 } 2060 2061 static const struct file_operations asus_wmi_debugfs_io_ops = { 2062 .owner = THIS_MODULE, 2063 .open = asus_wmi_debugfs_open, 2064 .read = seq_read, 2065 .llseek = seq_lseek, 2066 .release = single_release, 2067 }; 2068 2069 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2070 { 2071 debugfs_remove_recursive(asus->debug.root); 2072 } 2073 2074 static int asus_wmi_debugfs_init(struct asus_wmi *asus) 2075 { 2076 struct dentry *dent; 2077 int i; 2078 2079 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2080 if (!asus->debug.root) { 2081 pr_err("failed to create debugfs directory\n"); 2082 goto error_debugfs; 2083 } 2084 2085 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 2086 asus->debug.root, &asus->debug.method_id); 2087 if (!dent) 2088 goto error_debugfs; 2089 2090 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 2091 asus->debug.root, &asus->debug.dev_id); 2092 if (!dent) 2093 goto error_debugfs; 2094 2095 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 2096 asus->debug.root, &asus->debug.ctrl_param); 2097 if (!dent) 2098 goto error_debugfs; 2099 2100 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2101 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2102 2103 node->asus = asus; 2104 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2105 asus->debug.root, node, 2106 &asus_wmi_debugfs_io_ops); 2107 if (!dent) { 2108 pr_err("failed to create debug file: %s\n", node->name); 2109 goto error_debugfs; 2110 } 2111 } 2112 2113 return 0; 2114 2115 error_debugfs: 2116 asus_wmi_debugfs_exit(asus); 2117 return -ENOMEM; 2118 } 2119 2120 static int asus_wmi_fan_init(struct asus_wmi *asus) 2121 { 2122 int status; 2123 2124 asus->asus_hwmon_pwm = -1; 2125 asus->asus_hwmon_num_fans = -1; 2126 asus->asus_hwmon_fan_manual_mode = false; 2127 2128 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans); 2129 if (status) { 2130 asus->asus_hwmon_num_fans = 0; 2131 pr_warn("Could not determine number of fans: %d\n", status); 2132 return -ENXIO; 2133 } 2134 2135 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans); 2136 return 0; 2137 } 2138 2139 /* 2140 * WMI Driver 2141 */ 2142 static int asus_wmi_add(struct platform_device *pdev) 2143 { 2144 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2145 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2146 struct asus_wmi *asus; 2147 const char *chassis_type; 2148 acpi_status status; 2149 int err; 2150 u32 result; 2151 2152 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2153 if (!asus) 2154 return -ENOMEM; 2155 2156 asus->driver = wdrv; 2157 asus->platform_device = pdev; 2158 wdrv->platform_device = pdev; 2159 platform_set_drvdata(asus->platform_device, asus); 2160 2161 if (wdrv->detect_quirks) 2162 wdrv->detect_quirks(asus->driver); 2163 2164 err = asus_wmi_platform_init(asus); 2165 if (err) 2166 goto fail_platform; 2167 2168 err = asus_wmi_input_init(asus); 2169 if (err) 2170 goto fail_input; 2171 2172 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2173 asus_hwmon_fan_set_auto(asus); 2174 2175 err = asus_wmi_hwmon_init(asus); 2176 if (err) 2177 goto fail_hwmon; 2178 2179 err = asus_wmi_led_init(asus); 2180 if (err) 2181 goto fail_leds; 2182 2183 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2184 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2185 asus->driver->wlan_ctrl_by_user = 1; 2186 2187 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2188 err = asus_wmi_rfkill_init(asus); 2189 if (err) 2190 goto fail_rfkill; 2191 } 2192 2193 if (asus->driver->quirks->wmi_force_als_set) 2194 asus_wmi_set_als(); 2195 2196 /* Some Asus desktop boards export an acpi-video backlight interface, 2197 stop this from showing up */ 2198 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2199 if (chassis_type && !strcmp(chassis_type, "3")) 2200 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2201 2202 if (asus->driver->quirks->wmi_backlight_power) 2203 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2204 2205 if (asus->driver->quirks->wmi_backlight_native) 2206 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2207 2208 if (asus->driver->quirks->xusb2pr) 2209 asus_wmi_set_xusb2pr(asus); 2210 2211 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2212 err = asus_wmi_backlight_init(asus); 2213 if (err && err != -ENODEV) 2214 goto fail_backlight; 2215 } 2216 2217 status = wmi_install_notify_handler(asus->driver->event_guid, 2218 asus_wmi_notify, asus); 2219 if (ACPI_FAILURE(status)) { 2220 pr_err("Unable to register notify handler - %d\n", status); 2221 err = -ENODEV; 2222 goto fail_wmi_handler; 2223 } 2224 2225 err = asus_wmi_debugfs_init(asus); 2226 if (err) 2227 goto fail_debugfs; 2228 2229 return 0; 2230 2231 fail_debugfs: 2232 wmi_remove_notify_handler(asus->driver->event_guid); 2233 fail_wmi_handler: 2234 asus_wmi_backlight_exit(asus); 2235 fail_backlight: 2236 asus_wmi_rfkill_exit(asus); 2237 fail_rfkill: 2238 asus_wmi_led_exit(asus); 2239 fail_leds: 2240 fail_hwmon: 2241 asus_wmi_input_exit(asus); 2242 fail_input: 2243 asus_wmi_platform_exit(asus); 2244 fail_platform: 2245 kfree(asus); 2246 return err; 2247 } 2248 2249 static int asus_wmi_remove(struct platform_device *device) 2250 { 2251 struct asus_wmi *asus; 2252 2253 asus = platform_get_drvdata(device); 2254 wmi_remove_notify_handler(asus->driver->event_guid); 2255 asus_wmi_backlight_exit(asus); 2256 asus_wmi_input_exit(asus); 2257 asus_wmi_led_exit(asus); 2258 asus_wmi_rfkill_exit(asus); 2259 asus_wmi_debugfs_exit(asus); 2260 asus_wmi_platform_exit(asus); 2261 asus_hwmon_fan_set_auto(asus); 2262 2263 kfree(asus); 2264 return 0; 2265 } 2266 2267 /* 2268 * Platform driver - hibernate/resume callbacks 2269 */ 2270 static int asus_hotk_thaw(struct device *device) 2271 { 2272 struct asus_wmi *asus = dev_get_drvdata(device); 2273 2274 if (asus->wlan.rfkill) { 2275 bool wlan; 2276 2277 /* 2278 * Work around bios bug - acpi _PTS turns off the wireless led 2279 * during suspend. Normally it restores it on resume, but 2280 * we should kick it ourselves in case hibernation is aborted. 2281 */ 2282 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2283 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2284 } 2285 2286 return 0; 2287 } 2288 2289 static int asus_hotk_resume(struct device *device) 2290 { 2291 struct asus_wmi *asus = dev_get_drvdata(device); 2292 2293 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2294 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2295 2296 return 0; 2297 } 2298 2299 static int asus_hotk_restore(struct device *device) 2300 { 2301 struct asus_wmi *asus = dev_get_drvdata(device); 2302 int bl; 2303 2304 /* Refresh both wlan rfkill state and pci hotplug */ 2305 if (asus->wlan.rfkill) 2306 asus_rfkill_hotplug(asus); 2307 2308 if (asus->bluetooth.rfkill) { 2309 bl = !asus_wmi_get_devstate_simple(asus, 2310 ASUS_WMI_DEVID_BLUETOOTH); 2311 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2312 } 2313 if (asus->wimax.rfkill) { 2314 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2315 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2316 } 2317 if (asus->wwan3g.rfkill) { 2318 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2319 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2320 } 2321 if (asus->gps.rfkill) { 2322 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2323 rfkill_set_sw_state(asus->gps.rfkill, bl); 2324 } 2325 if (asus->uwb.rfkill) { 2326 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2327 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2328 } 2329 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2330 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2331 2332 return 0; 2333 } 2334 2335 static const struct dev_pm_ops asus_pm_ops = { 2336 .thaw = asus_hotk_thaw, 2337 .restore = asus_hotk_restore, 2338 .resume = asus_hotk_resume, 2339 }; 2340 2341 static int asus_wmi_probe(struct platform_device *pdev) 2342 { 2343 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2344 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2345 int ret; 2346 2347 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2348 pr_warn("Management GUID not found\n"); 2349 return -ENODEV; 2350 } 2351 2352 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2353 pr_warn("Event GUID not found\n"); 2354 return -ENODEV; 2355 } 2356 2357 if (wdrv->probe) { 2358 ret = wdrv->probe(pdev); 2359 if (ret) 2360 return ret; 2361 } 2362 2363 return asus_wmi_add(pdev); 2364 } 2365 2366 static bool used; 2367 2368 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2369 { 2370 struct platform_driver *platform_driver; 2371 struct platform_device *platform_device; 2372 2373 if (used) 2374 return -EBUSY; 2375 2376 platform_driver = &driver->platform_driver; 2377 platform_driver->remove = asus_wmi_remove; 2378 platform_driver->driver.owner = driver->owner; 2379 platform_driver->driver.name = driver->name; 2380 platform_driver->driver.pm = &asus_pm_ops; 2381 2382 platform_device = platform_create_bundle(platform_driver, 2383 asus_wmi_probe, 2384 NULL, 0, NULL, 0); 2385 if (IS_ERR(platform_device)) 2386 return PTR_ERR(platform_device); 2387 2388 used = true; 2389 return 0; 2390 } 2391 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2392 2393 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2394 { 2395 platform_device_unregister(driver->platform_device); 2396 platform_driver_unregister(&driver->platform_driver); 2397 used = false; 2398 } 2399 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2400 2401 static int __init asus_wmi_init(void) 2402 { 2403 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2404 pr_info("Asus Management GUID not found\n"); 2405 return -ENODEV; 2406 } 2407 2408 pr_info("ASUS WMI generic driver loaded\n"); 2409 return 0; 2410 } 2411 2412 static void __exit asus_wmi_exit(void) 2413 { 2414 pr_info("ASUS WMI generic driver unloaded\n"); 2415 } 2416 2417 module_init(asus_wmi_init); 2418 module_exit(asus_wmi_exit); 2419