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 71 /* WMI Methods */ 72 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */ 73 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */ 74 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */ 75 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */ 76 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */ 77 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */ 78 #define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */ 79 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */ 80 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */ 81 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */ 82 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */ 83 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */ 84 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */ 85 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/ 86 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */ 87 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */ 88 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */ 89 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ 90 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ 91 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ 92 93 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE 94 95 /* Wireless */ 96 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 97 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 98 #define ASUS_WMI_DEVID_CWAP 0x00010003 99 #define ASUS_WMI_DEVID_WLAN 0x00010011 100 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012 101 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 102 #define ASUS_WMI_DEVID_GPS 0x00010015 103 #define ASUS_WMI_DEVID_WIMAX 0x00010017 104 #define ASUS_WMI_DEVID_WWAN3G 0x00010019 105 #define ASUS_WMI_DEVID_UWB 0x00010021 106 107 /* Leds */ 108 /* 0x000200XX and 0x000400XX */ 109 #define ASUS_WMI_DEVID_LED1 0x00020011 110 #define ASUS_WMI_DEVID_LED2 0x00020012 111 #define ASUS_WMI_DEVID_LED3 0x00020013 112 #define ASUS_WMI_DEVID_LED4 0x00020014 113 #define ASUS_WMI_DEVID_LED5 0x00020015 114 #define ASUS_WMI_DEVID_LED6 0x00020016 115 116 /* Backlight and Brightness */ 117 #define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */ 118 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011 119 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 120 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 121 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ 122 #define ASUS_WMI_DEVID_LIGHTBAR 0x00050025 123 124 /* Misc */ 125 #define ASUS_WMI_DEVID_CAMERA 0x00060013 126 127 /* Storage */ 128 #define ASUS_WMI_DEVID_CARDREADER 0x00080013 129 130 /* Input */ 131 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 132 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 133 134 /* Fan, Thermal */ 135 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 136 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 137 138 /* Power */ 139 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 140 141 /* Deep S3 / Resume on LID open */ 142 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031 143 144 /* DSTS masks */ 145 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 146 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 147 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 148 #define ASUS_WMI_DSTS_USER_BIT 0x00020000 149 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 150 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 151 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 152 #define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F 153 154 #define ASUS_FAN_DESC "cpu_fan" 155 #define ASUS_FAN_MFUN 0x13 156 #define ASUS_FAN_SFUN_READ 0x06 157 #define ASUS_FAN_SFUN_WRITE 0x07 158 #define ASUS_FAN_CTRL_MANUAL 1 159 #define ASUS_FAN_CTRL_AUTO 2 160 161 #define USB_INTEL_XUSB2PR 0xD0 162 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 163 164 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 165 166 static bool ashs_present(void) 167 { 168 int i = 0; 169 while (ashs_ids[i]) { 170 if (acpi_dev_found(ashs_ids[i++])) 171 return true; 172 } 173 return false; 174 } 175 176 struct bios_args { 177 u32 arg0; 178 u32 arg1; 179 } __packed; 180 181 /* 182 * Struct that's used for all methods called via AGFN. Naming is 183 * identically to the AML code. 184 */ 185 struct agfn_args { 186 u16 mfun; /* probably "Multi-function" to be called */ 187 u16 sfun; /* probably "Sub-function" to be called */ 188 u16 len; /* size of the hole struct, including subfunction fields */ 189 u8 stas; /* not used by now */ 190 u8 err; /* zero on success */ 191 } __packed; 192 193 /* struct used for calling fan read and write methods */ 194 struct fan_args { 195 struct agfn_args agfn; /* common fields */ 196 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 197 u32 speed; /* read: RPM/100 - write: 0-255 */ 198 } __packed; 199 200 /* 201 * <platform>/ - debugfs root directory 202 * dev_id - current dev_id 203 * ctrl_param - current ctrl_param 204 * method_id - current method_id 205 * devs - call DEVS(dev_id, ctrl_param) and print result 206 * dsts - call DSTS(dev_id) and print result 207 * call - call method_id(dev_id, ctrl_param) and print result 208 */ 209 struct asus_wmi_debug { 210 struct dentry *root; 211 u32 method_id; 212 u32 dev_id; 213 u32 ctrl_param; 214 }; 215 216 struct asus_rfkill { 217 struct asus_wmi *asus; 218 struct rfkill *rfkill; 219 u32 dev_id; 220 }; 221 222 struct asus_wmi { 223 int dsts_id; 224 int spec; 225 int sfun; 226 227 struct input_dev *inputdev; 228 struct backlight_device *backlight_device; 229 struct platform_device *platform_device; 230 231 struct led_classdev wlan_led; 232 int wlan_led_wk; 233 struct led_classdev tpd_led; 234 int tpd_led_wk; 235 struct led_classdev kbd_led; 236 int kbd_led_wk; 237 struct led_classdev lightbar_led; 238 int lightbar_led_wk; 239 struct workqueue_struct *led_workqueue; 240 struct work_struct tpd_led_work; 241 struct work_struct kbd_led_work; 242 struct work_struct wlan_led_work; 243 struct work_struct lightbar_led_work; 244 245 struct asus_rfkill wlan; 246 struct asus_rfkill bluetooth; 247 struct asus_rfkill wimax; 248 struct asus_rfkill wwan3g; 249 struct asus_rfkill gps; 250 struct asus_rfkill uwb; 251 252 bool asus_hwmon_fan_manual_mode; 253 int asus_hwmon_num_fans; 254 int asus_hwmon_pwm; 255 256 struct hotplug_slot *hotplug_slot; 257 struct mutex hotplug_lock; 258 struct mutex wmi_lock; 259 struct workqueue_struct *hotplug_workqueue; 260 struct work_struct hotplug_work; 261 262 struct asus_wmi_debug debug; 263 264 struct asus_wmi_driver *driver; 265 }; 266 267 static int asus_wmi_input_init(struct asus_wmi *asus) 268 { 269 int err; 270 271 asus->inputdev = input_allocate_device(); 272 if (!asus->inputdev) 273 return -ENOMEM; 274 275 asus->inputdev->name = asus->driver->input_name; 276 asus->inputdev->phys = asus->driver->input_phys; 277 asus->inputdev->id.bustype = BUS_HOST; 278 asus->inputdev->dev.parent = &asus->platform_device->dev; 279 set_bit(EV_REP, asus->inputdev->evbit); 280 281 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 282 if (err) 283 goto err_free_dev; 284 285 err = input_register_device(asus->inputdev); 286 if (err) 287 goto err_free_dev; 288 289 return 0; 290 291 err_free_dev: 292 input_free_device(asus->inputdev); 293 return err; 294 } 295 296 static void asus_wmi_input_exit(struct asus_wmi *asus) 297 { 298 if (asus->inputdev) 299 input_unregister_device(asus->inputdev); 300 301 asus->inputdev = NULL; 302 } 303 304 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, 305 u32 *retval) 306 { 307 struct bios_args args = { 308 .arg0 = arg0, 309 .arg1 = arg1, 310 }; 311 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 312 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 313 acpi_status status; 314 union acpi_object *obj; 315 u32 tmp = 0; 316 317 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 318 &input, &output); 319 320 if (ACPI_FAILURE(status)) 321 goto exit; 322 323 obj = (union acpi_object *)output.pointer; 324 if (obj && obj->type == ACPI_TYPE_INTEGER) 325 tmp = (u32) obj->integer.value; 326 327 if (retval) 328 *retval = tmp; 329 330 kfree(obj); 331 332 exit: 333 if (ACPI_FAILURE(status)) 334 return -EIO; 335 336 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 337 return -ENODEV; 338 339 return 0; 340 } 341 342 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 343 { 344 struct acpi_buffer input; 345 u64 phys_addr; 346 u32 retval; 347 u32 status = -1; 348 349 /* 350 * Copy to dma capable address otherwise memory corruption occurs as 351 * bios has to be able to access it. 352 */ 353 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL); 354 input.length = args.length; 355 if (!input.pointer) 356 return -ENOMEM; 357 phys_addr = virt_to_phys(input.pointer); 358 memcpy(input.pointer, args.pointer, args.length); 359 360 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 361 phys_addr, 0, &retval); 362 if (!status) 363 memcpy(args.pointer, input.pointer, args.length); 364 365 kfree(input.pointer); 366 if (status) 367 return -ENXIO; 368 369 return retval; 370 } 371 372 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 373 { 374 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 375 } 376 377 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 378 u32 *retval) 379 { 380 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 381 ctrl_param, retval); 382 } 383 384 /* Helper for special devices with magic return codes */ 385 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 386 u32 dev_id, u32 mask) 387 { 388 u32 retval = 0; 389 int err; 390 391 err = asus_wmi_get_devstate(asus, dev_id, &retval); 392 393 if (err < 0) 394 return err; 395 396 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 397 return -ENODEV; 398 399 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 400 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 401 return -ENODEV; 402 } 403 404 return retval & mask; 405 } 406 407 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 408 { 409 return asus_wmi_get_devstate_bits(asus, dev_id, 410 ASUS_WMI_DSTS_STATUS_BIT); 411 } 412 413 /* 414 * LEDs 415 */ 416 /* 417 * These functions actually update the LED's, and are called from a 418 * workqueue. By doing this as separate work rather than when the LED 419 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 420 * potentially bad time, such as a timer interrupt. 421 */ 422 static void tpd_led_update(struct work_struct *work) 423 { 424 int ctrl_param; 425 struct asus_wmi *asus; 426 427 asus = container_of(work, struct asus_wmi, tpd_led_work); 428 429 ctrl_param = asus->tpd_led_wk; 430 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 431 } 432 433 static void tpd_led_set(struct led_classdev *led_cdev, 434 enum led_brightness value) 435 { 436 struct asus_wmi *asus; 437 438 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 439 440 asus->tpd_led_wk = !!value; 441 queue_work(asus->led_workqueue, &asus->tpd_led_work); 442 } 443 444 static int read_tpd_led_state(struct asus_wmi *asus) 445 { 446 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 447 } 448 449 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 450 { 451 struct asus_wmi *asus; 452 453 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 454 455 return read_tpd_led_state(asus); 456 } 457 458 static void kbd_led_update(struct work_struct *work) 459 { 460 int ctrl_param = 0; 461 struct asus_wmi *asus; 462 463 asus = container_of(work, struct asus_wmi, kbd_led_work); 464 465 /* 466 * bits 0-2: level 467 * bit 7: light on/off 468 */ 469 if (asus->kbd_led_wk > 0) 470 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 471 472 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 473 } 474 475 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 476 { 477 int retval; 478 479 /* 480 * bits 0-2: level 481 * bit 7: light on/off 482 * bit 8-10: environment (0: dark, 1: normal, 2: light) 483 * bit 17: status unknown 484 */ 485 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 486 0xFFFF); 487 488 /* Unknown status is considered as off */ 489 if (retval == 0x8000) 490 retval = 0; 491 492 if (retval >= 0) { 493 if (level) 494 *level = retval & 0x7F; 495 if (env) 496 *env = (retval >> 8) & 0x7F; 497 retval = 0; 498 } 499 500 return retval; 501 } 502 503 static void kbd_led_set(struct led_classdev *led_cdev, 504 enum led_brightness value) 505 { 506 struct asus_wmi *asus; 507 508 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 509 510 if (value > asus->kbd_led.max_brightness) 511 value = asus->kbd_led.max_brightness; 512 else if (value < 0) 513 value = 0; 514 515 asus->kbd_led_wk = value; 516 queue_work(asus->led_workqueue, &asus->kbd_led_work); 517 } 518 519 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 520 { 521 struct asus_wmi *asus; 522 int retval, value; 523 524 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 525 526 retval = kbd_led_read(asus, &value, NULL); 527 528 if (retval < 0) 529 return retval; 530 531 return value; 532 } 533 534 static int wlan_led_unknown_state(struct asus_wmi *asus) 535 { 536 u32 result; 537 538 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 539 540 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 541 } 542 543 static int wlan_led_presence(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_PRESENCE_BIT; 550 } 551 552 static void wlan_led_update(struct work_struct *work) 553 { 554 int ctrl_param; 555 struct asus_wmi *asus; 556 557 asus = container_of(work, struct asus_wmi, wlan_led_work); 558 559 ctrl_param = asus->wlan_led_wk; 560 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 561 } 562 563 static void wlan_led_set(struct led_classdev *led_cdev, 564 enum led_brightness value) 565 { 566 struct asus_wmi *asus; 567 568 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 569 570 asus->wlan_led_wk = !!value; 571 queue_work(asus->led_workqueue, &asus->wlan_led_work); 572 } 573 574 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 575 { 576 struct asus_wmi *asus; 577 u32 result; 578 579 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 580 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 581 582 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 583 } 584 585 static void lightbar_led_update(struct work_struct *work) 586 { 587 struct asus_wmi *asus; 588 int ctrl_param; 589 590 asus = container_of(work, struct asus_wmi, lightbar_led_work); 591 592 ctrl_param = asus->lightbar_led_wk; 593 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 594 } 595 596 static void lightbar_led_set(struct led_classdev *led_cdev, 597 enum led_brightness value) 598 { 599 struct asus_wmi *asus; 600 601 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 602 603 asus->lightbar_led_wk = !!value; 604 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 605 } 606 607 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 608 { 609 struct asus_wmi *asus; 610 u32 result; 611 612 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 613 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 614 615 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 616 } 617 618 static int lightbar_led_presence(struct asus_wmi *asus) 619 { 620 u32 result; 621 622 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 623 624 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 625 } 626 627 static void asus_wmi_led_exit(struct asus_wmi *asus) 628 { 629 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 630 led_classdev_unregister(&asus->kbd_led); 631 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 632 led_classdev_unregister(&asus->tpd_led); 633 if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) 634 led_classdev_unregister(&asus->wlan_led); 635 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev)) 636 led_classdev_unregister(&asus->lightbar_led); 637 if (asus->led_workqueue) 638 destroy_workqueue(asus->led_workqueue); 639 } 640 641 static int asus_wmi_led_init(struct asus_wmi *asus) 642 { 643 int rv = 0, led_val; 644 645 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 646 if (!asus->led_workqueue) 647 return -ENOMEM; 648 649 if (read_tpd_led_state(asus) >= 0) { 650 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 651 652 asus->tpd_led.name = "asus::touchpad"; 653 asus->tpd_led.brightness_set = tpd_led_set; 654 asus->tpd_led.brightness_get = tpd_led_get; 655 asus->tpd_led.max_brightness = 1; 656 657 rv = led_classdev_register(&asus->platform_device->dev, 658 &asus->tpd_led); 659 if (rv) 660 goto error; 661 } 662 663 led_val = kbd_led_read(asus, NULL, NULL); 664 if (led_val >= 0) { 665 INIT_WORK(&asus->kbd_led_work, kbd_led_update); 666 667 asus->kbd_led_wk = led_val; 668 asus->kbd_led.name = "asus::kbd_backlight"; 669 asus->kbd_led.brightness_set = kbd_led_set; 670 asus->kbd_led.brightness_get = kbd_led_get; 671 asus->kbd_led.max_brightness = 3; 672 673 rv = led_classdev_register(&asus->platform_device->dev, 674 &asus->kbd_led); 675 if (rv) 676 goto error; 677 } 678 679 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) { 680 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 681 682 asus->wlan_led.name = "asus::wlan"; 683 asus->wlan_led.brightness_set = wlan_led_set; 684 if (!wlan_led_unknown_state(asus)) 685 asus->wlan_led.brightness_get = wlan_led_get; 686 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 687 asus->wlan_led.max_brightness = 1; 688 asus->wlan_led.default_trigger = "asus-wlan"; 689 690 rv = led_classdev_register(&asus->platform_device->dev, 691 &asus->wlan_led); 692 if (rv) 693 goto error; 694 } 695 696 if (lightbar_led_presence(asus)) { 697 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 698 699 asus->lightbar_led.name = "asus::lightbar"; 700 asus->lightbar_led.brightness_set = lightbar_led_set; 701 asus->lightbar_led.brightness_get = lightbar_led_get; 702 asus->lightbar_led.max_brightness = 1; 703 704 rv = led_classdev_register(&asus->platform_device->dev, 705 &asus->lightbar_led); 706 } 707 708 error: 709 if (rv) 710 asus_wmi_led_exit(asus); 711 712 return rv; 713 } 714 715 716 /* 717 * PCI hotplug (for wlan rfkill) 718 */ 719 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 720 { 721 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 722 723 if (result < 0) 724 return false; 725 return !result; 726 } 727 728 static void asus_rfkill_hotplug(struct asus_wmi *asus) 729 { 730 struct pci_dev *dev; 731 struct pci_bus *bus; 732 bool blocked; 733 bool absent; 734 u32 l; 735 736 mutex_lock(&asus->wmi_lock); 737 blocked = asus_wlan_rfkill_blocked(asus); 738 mutex_unlock(&asus->wmi_lock); 739 740 mutex_lock(&asus->hotplug_lock); 741 pci_lock_rescan_remove(); 742 743 if (asus->wlan.rfkill) 744 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 745 746 if (asus->hotplug_slot) { 747 bus = pci_find_bus(0, 1); 748 if (!bus) { 749 pr_warn("Unable to find PCI bus 1?\n"); 750 goto out_unlock; 751 } 752 753 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 754 pr_err("Unable to read PCI config space?\n"); 755 goto out_unlock; 756 } 757 absent = (l == 0xffffffff); 758 759 if (blocked != absent) { 760 pr_warn("BIOS says wireless lan is %s, " 761 "but the pci device is %s\n", 762 blocked ? "blocked" : "unblocked", 763 absent ? "absent" : "present"); 764 pr_warn("skipped wireless hotplug as probably " 765 "inappropriate for this model\n"); 766 goto out_unlock; 767 } 768 769 if (!blocked) { 770 dev = pci_get_slot(bus, 0); 771 if (dev) { 772 /* Device already present */ 773 pci_dev_put(dev); 774 goto out_unlock; 775 } 776 dev = pci_scan_single_device(bus, 0); 777 if (dev) { 778 pci_bus_assign_resources(bus); 779 pci_bus_add_device(dev); 780 } 781 } else { 782 dev = pci_get_slot(bus, 0); 783 if (dev) { 784 pci_stop_and_remove_bus_device(dev); 785 pci_dev_put(dev); 786 } 787 } 788 } 789 790 out_unlock: 791 pci_unlock_rescan_remove(); 792 mutex_unlock(&asus->hotplug_lock); 793 } 794 795 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 796 { 797 struct asus_wmi *asus = data; 798 799 if (event != ACPI_NOTIFY_BUS_CHECK) 800 return; 801 802 /* 803 * We can't call directly asus_rfkill_hotplug because most 804 * of the time WMBC is still being executed and not reetrant. 805 * There is currently no way to tell ACPICA that we want this 806 * method to be serialized, we schedule a asus_rfkill_hotplug 807 * call later, in a safer context. 808 */ 809 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 810 } 811 812 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 813 { 814 acpi_status status; 815 acpi_handle handle; 816 817 status = acpi_get_handle(NULL, node, &handle); 818 819 if (ACPI_SUCCESS(status)) { 820 status = acpi_install_notify_handler(handle, 821 ACPI_SYSTEM_NOTIFY, 822 asus_rfkill_notify, asus); 823 if (ACPI_FAILURE(status)) 824 pr_warn("Failed to register notify on %s\n", node); 825 } else 826 return -ENODEV; 827 828 return 0; 829 } 830 831 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 832 { 833 acpi_status status = AE_OK; 834 acpi_handle handle; 835 836 status = acpi_get_handle(NULL, node, &handle); 837 838 if (ACPI_SUCCESS(status)) { 839 status = acpi_remove_notify_handler(handle, 840 ACPI_SYSTEM_NOTIFY, 841 asus_rfkill_notify); 842 if (ACPI_FAILURE(status)) 843 pr_err("Error removing rfkill notify handler %s\n", 844 node); 845 } 846 } 847 848 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 849 u8 *value) 850 { 851 struct asus_wmi *asus = hotplug_slot->private; 852 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 853 854 if (result < 0) 855 return result; 856 857 *value = !!result; 858 return 0; 859 } 860 861 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 862 { 863 kfree(hotplug_slot->info); 864 kfree(hotplug_slot); 865 } 866 867 static struct hotplug_slot_ops asus_hotplug_slot_ops = { 868 .owner = THIS_MODULE, 869 .get_adapter_status = asus_get_adapter_status, 870 .get_power_status = asus_get_adapter_status, 871 }; 872 873 static void asus_hotplug_work(struct work_struct *work) 874 { 875 struct asus_wmi *asus; 876 877 asus = container_of(work, struct asus_wmi, hotplug_work); 878 asus_rfkill_hotplug(asus); 879 } 880 881 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 882 { 883 int ret = -ENOMEM; 884 struct pci_bus *bus = pci_find_bus(0, 1); 885 886 if (!bus) { 887 pr_err("Unable to find wifi PCI bus\n"); 888 return -ENODEV; 889 } 890 891 asus->hotplug_workqueue = 892 create_singlethread_workqueue("hotplug_workqueue"); 893 if (!asus->hotplug_workqueue) 894 goto error_workqueue; 895 896 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 897 898 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); 899 if (!asus->hotplug_slot) 900 goto error_slot; 901 902 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), 903 GFP_KERNEL); 904 if (!asus->hotplug_slot->info) 905 goto error_info; 906 907 asus->hotplug_slot->private = asus; 908 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug; 909 asus->hotplug_slot->ops = &asus_hotplug_slot_ops; 910 asus_get_adapter_status(asus->hotplug_slot, 911 &asus->hotplug_slot->info->adapter_status); 912 913 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi"); 914 if (ret) { 915 pr_err("Unable to register hotplug slot - %d\n", ret); 916 goto error_register; 917 } 918 919 return 0; 920 921 error_register: 922 kfree(asus->hotplug_slot->info); 923 error_info: 924 kfree(asus->hotplug_slot); 925 asus->hotplug_slot = NULL; 926 error_slot: 927 destroy_workqueue(asus->hotplug_workqueue); 928 error_workqueue: 929 return ret; 930 } 931 932 /* 933 * Rfkill devices 934 */ 935 static int asus_rfkill_set(void *data, bool blocked) 936 { 937 struct asus_rfkill *priv = data; 938 u32 ctrl_param = !blocked; 939 u32 dev_id = priv->dev_id; 940 941 /* 942 * If the user bit is set, BIOS can't set and record the wlan status, 943 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 944 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 945 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 946 * while setting the wlan status through WMI. 947 * This is also the behavior that windows app will do. 948 */ 949 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 950 priv->asus->driver->wlan_ctrl_by_user) 951 dev_id = ASUS_WMI_DEVID_WLAN_LED; 952 953 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 954 } 955 956 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 957 { 958 struct asus_rfkill *priv = data; 959 int result; 960 961 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 962 963 if (result < 0) 964 return; 965 966 rfkill_set_sw_state(priv->rfkill, !result); 967 } 968 969 static int asus_rfkill_wlan_set(void *data, bool blocked) 970 { 971 struct asus_rfkill *priv = data; 972 struct asus_wmi *asus = priv->asus; 973 int ret; 974 975 /* 976 * This handler is enabled only if hotplug is enabled. 977 * In this case, the asus_wmi_set_devstate() will 978 * trigger a wmi notification and we need to wait 979 * this call to finish before being able to call 980 * any wmi method 981 */ 982 mutex_lock(&asus->wmi_lock); 983 ret = asus_rfkill_set(data, blocked); 984 mutex_unlock(&asus->wmi_lock); 985 return ret; 986 } 987 988 static const struct rfkill_ops asus_rfkill_wlan_ops = { 989 .set_block = asus_rfkill_wlan_set, 990 .query = asus_rfkill_query, 991 }; 992 993 static const struct rfkill_ops asus_rfkill_ops = { 994 .set_block = asus_rfkill_set, 995 .query = asus_rfkill_query, 996 }; 997 998 static int asus_new_rfkill(struct asus_wmi *asus, 999 struct asus_rfkill *arfkill, 1000 const char *name, enum rfkill_type type, int dev_id) 1001 { 1002 int result = asus_wmi_get_devstate_simple(asus, dev_id); 1003 struct rfkill **rfkill = &arfkill->rfkill; 1004 1005 if (result < 0) 1006 return result; 1007 1008 arfkill->dev_id = dev_id; 1009 arfkill->asus = asus; 1010 1011 if (dev_id == ASUS_WMI_DEVID_WLAN && 1012 asus->driver->quirks->hotplug_wireless) 1013 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1014 &asus_rfkill_wlan_ops, arfkill); 1015 else 1016 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1017 &asus_rfkill_ops, arfkill); 1018 1019 if (!*rfkill) 1020 return -EINVAL; 1021 1022 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1023 (asus->driver->quirks->wapf > 0)) 1024 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1025 1026 rfkill_init_sw_state(*rfkill, !result); 1027 result = rfkill_register(*rfkill); 1028 if (result) { 1029 rfkill_destroy(*rfkill); 1030 *rfkill = NULL; 1031 return result; 1032 } 1033 return 0; 1034 } 1035 1036 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 1037 { 1038 if (asus->driver->wlan_ctrl_by_user && ashs_present()) 1039 return; 1040 1041 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1042 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1043 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1044 if (asus->wlan.rfkill) { 1045 rfkill_unregister(asus->wlan.rfkill); 1046 rfkill_destroy(asus->wlan.rfkill); 1047 asus->wlan.rfkill = NULL; 1048 } 1049 /* 1050 * Refresh pci hotplug in case the rfkill state was changed after 1051 * asus_unregister_rfkill_notifier() 1052 */ 1053 asus_rfkill_hotplug(asus); 1054 if (asus->hotplug_slot) 1055 pci_hp_deregister(asus->hotplug_slot); 1056 if (asus->hotplug_workqueue) 1057 destroy_workqueue(asus->hotplug_workqueue); 1058 1059 if (asus->bluetooth.rfkill) { 1060 rfkill_unregister(asus->bluetooth.rfkill); 1061 rfkill_destroy(asus->bluetooth.rfkill); 1062 asus->bluetooth.rfkill = NULL; 1063 } 1064 if (asus->wimax.rfkill) { 1065 rfkill_unregister(asus->wimax.rfkill); 1066 rfkill_destroy(asus->wimax.rfkill); 1067 asus->wimax.rfkill = NULL; 1068 } 1069 if (asus->wwan3g.rfkill) { 1070 rfkill_unregister(asus->wwan3g.rfkill); 1071 rfkill_destroy(asus->wwan3g.rfkill); 1072 asus->wwan3g.rfkill = NULL; 1073 } 1074 if (asus->gps.rfkill) { 1075 rfkill_unregister(asus->gps.rfkill); 1076 rfkill_destroy(asus->gps.rfkill); 1077 asus->gps.rfkill = NULL; 1078 } 1079 if (asus->uwb.rfkill) { 1080 rfkill_unregister(asus->uwb.rfkill); 1081 rfkill_destroy(asus->uwb.rfkill); 1082 asus->uwb.rfkill = NULL; 1083 } 1084 } 1085 1086 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1087 { 1088 int result = 0; 1089 1090 mutex_init(&asus->hotplug_lock); 1091 mutex_init(&asus->wmi_lock); 1092 1093 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1094 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1095 1096 if (result && result != -ENODEV) 1097 goto exit; 1098 1099 result = asus_new_rfkill(asus, &asus->bluetooth, 1100 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1101 ASUS_WMI_DEVID_BLUETOOTH); 1102 1103 if (result && result != -ENODEV) 1104 goto exit; 1105 1106 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1107 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1108 1109 if (result && result != -ENODEV) 1110 goto exit; 1111 1112 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1113 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1114 1115 if (result && result != -ENODEV) 1116 goto exit; 1117 1118 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1119 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1120 1121 if (result && result != -ENODEV) 1122 goto exit; 1123 1124 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1125 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1126 1127 if (result && result != -ENODEV) 1128 goto exit; 1129 1130 if (!asus->driver->quirks->hotplug_wireless) 1131 goto exit; 1132 1133 result = asus_setup_pci_hotplug(asus); 1134 /* 1135 * If we get -EBUSY then something else is handling the PCI hotplug - 1136 * don't fail in this case 1137 */ 1138 if (result == -EBUSY) 1139 result = 0; 1140 1141 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1142 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1143 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1144 /* 1145 * Refresh pci hotplug in case the rfkill state was changed during 1146 * setup. 1147 */ 1148 asus_rfkill_hotplug(asus); 1149 1150 exit: 1151 if (result && result != -ENODEV) 1152 asus_wmi_rfkill_exit(asus); 1153 1154 if (result == -ENODEV) 1155 result = 0; 1156 1157 return result; 1158 } 1159 1160 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1161 { 1162 struct pci_dev *xhci_pdev; 1163 u32 orig_ports_available; 1164 u32 ports_available = asus->driver->quirks->xusb2pr; 1165 1166 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1167 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1168 NULL); 1169 1170 if (!xhci_pdev) 1171 return; 1172 1173 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1174 &orig_ports_available); 1175 1176 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1177 cpu_to_le32(ports_available)); 1178 1179 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1180 orig_ports_available, ports_available); 1181 } 1182 1183 /* 1184 * Some devices dont support or have borcken get_als method 1185 * but still support set method. 1186 */ 1187 static void asus_wmi_set_als(void) 1188 { 1189 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL); 1190 } 1191 1192 /* 1193 * Hwmon device 1194 */ 1195 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1196 int *speed) 1197 { 1198 struct fan_args args = { 1199 .agfn.len = sizeof(args), 1200 .agfn.mfun = ASUS_FAN_MFUN, 1201 .agfn.sfun = ASUS_FAN_SFUN_READ, 1202 .fan = fan, 1203 .speed = 0, 1204 }; 1205 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1206 int status; 1207 1208 if (fan != 1) 1209 return -EINVAL; 1210 1211 status = asus_wmi_evaluate_method_agfn(input); 1212 1213 if (status || args.agfn.err) 1214 return -ENXIO; 1215 1216 if (speed) 1217 *speed = args.speed; 1218 1219 return 0; 1220 } 1221 1222 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1223 int *speed) 1224 { 1225 struct fan_args args = { 1226 .agfn.len = sizeof(args), 1227 .agfn.mfun = ASUS_FAN_MFUN, 1228 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1229 .fan = fan, 1230 .speed = speed ? *speed : 0, 1231 }; 1232 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1233 int status; 1234 1235 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1236 if (fan != 1 && fan != 0) 1237 return -EINVAL; 1238 1239 status = asus_wmi_evaluate_method_agfn(input); 1240 1241 if (status || args.agfn.err) 1242 return -ENXIO; 1243 1244 if (speed && fan == 1) 1245 asus->asus_hwmon_pwm = *speed; 1246 1247 return 0; 1248 } 1249 1250 /* 1251 * Check if we can read the speed of one fan. If true we assume we can also 1252 * control it. 1253 */ 1254 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans) 1255 { 1256 int status; 1257 int speed = 0; 1258 1259 *num_fans = 0; 1260 1261 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed); 1262 if (!status) 1263 *num_fans = 1; 1264 1265 return 0; 1266 } 1267 1268 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus) 1269 { 1270 int status; 1271 1272 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL); 1273 if (status) 1274 return -ENXIO; 1275 1276 asus->asus_hwmon_fan_manual_mode = false; 1277 1278 return 0; 1279 } 1280 1281 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan) 1282 { 1283 struct asus_wmi *asus = dev_get_drvdata(dev); 1284 int value; 1285 int ret; 1286 1287 /* no speed readable on manual mode */ 1288 if (asus->asus_hwmon_fan_manual_mode) 1289 return -ENXIO; 1290 1291 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value); 1292 if (ret) { 1293 pr_warn("reading fan speed failed: %d\n", ret); 1294 return -ENXIO; 1295 } 1296 1297 return value; 1298 } 1299 1300 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value) 1301 { 1302 int err; 1303 1304 if (asus->asus_hwmon_pwm >= 0) { 1305 *value = asus->asus_hwmon_pwm; 1306 return; 1307 } 1308 1309 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value); 1310 if (err < 0) 1311 return; 1312 1313 *value &= 0xFF; 1314 1315 if (*value == 1) /* Low Speed */ 1316 *value = 85; 1317 else if (*value == 2) 1318 *value = 170; 1319 else if (*value == 3) 1320 *value = 255; 1321 else if (*value) { 1322 pr_err("Unknown fan speed %#x\n", *value); 1323 *value = -1; 1324 } 1325 } 1326 1327 static ssize_t pwm1_show(struct device *dev, 1328 struct device_attribute *attr, 1329 char *buf) 1330 { 1331 struct asus_wmi *asus = dev_get_drvdata(dev); 1332 int value; 1333 1334 asus_hwmon_pwm_show(asus, 0, &value); 1335 1336 return sprintf(buf, "%d\n", value); 1337 } 1338 1339 static ssize_t pwm1_store(struct device *dev, 1340 struct device_attribute *attr, 1341 const char *buf, size_t count) { 1342 struct asus_wmi *asus = dev_get_drvdata(dev); 1343 int value; 1344 int state; 1345 int ret; 1346 1347 ret = kstrtouint(buf, 10, &value); 1348 1349 if (ret) 1350 return ret; 1351 1352 value = clamp(value, 0, 255); 1353 1354 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value); 1355 if (state) 1356 pr_warn("Setting fan speed failed: %d\n", state); 1357 else 1358 asus->asus_hwmon_fan_manual_mode = true; 1359 1360 return count; 1361 } 1362 1363 static ssize_t fan1_input_show(struct device *dev, 1364 struct device_attribute *attr, 1365 char *buf) 1366 { 1367 int value = asus_hwmon_fan_rpm_show(dev, 0); 1368 1369 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1370 1371 } 1372 1373 static ssize_t pwm1_enable_show(struct device *dev, 1374 struct device_attribute *attr, 1375 char *buf) 1376 { 1377 struct asus_wmi *asus = dev_get_drvdata(dev); 1378 1379 if (asus->asus_hwmon_fan_manual_mode) 1380 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL); 1381 1382 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO); 1383 } 1384 1385 static ssize_t pwm1_enable_store(struct device *dev, 1386 struct device_attribute *attr, 1387 const char *buf, size_t count) 1388 { 1389 struct asus_wmi *asus = dev_get_drvdata(dev); 1390 int status = 0; 1391 int state; 1392 int ret; 1393 1394 ret = kstrtouint(buf, 10, &state); 1395 1396 if (ret) 1397 return ret; 1398 1399 if (state == ASUS_FAN_CTRL_MANUAL) 1400 asus->asus_hwmon_fan_manual_mode = true; 1401 else 1402 status = asus_hwmon_fan_set_auto(asus); 1403 1404 if (status) 1405 return status; 1406 1407 return count; 1408 } 1409 1410 static ssize_t fan1_label_show(struct device *dev, 1411 struct device_attribute *attr, 1412 char *buf) 1413 { 1414 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1415 } 1416 1417 static ssize_t asus_hwmon_temp1(struct device *dev, 1418 struct device_attribute *attr, 1419 char *buf) 1420 { 1421 struct asus_wmi *asus = dev_get_drvdata(dev); 1422 u32 value; 1423 int err; 1424 1425 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1426 1427 if (err < 0) 1428 return err; 1429 1430 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000; 1431 1432 return sprintf(buf, "%d\n", value); 1433 } 1434 1435 /* Fan1 */ 1436 static DEVICE_ATTR_RW(pwm1); 1437 static DEVICE_ATTR_RW(pwm1_enable); 1438 static DEVICE_ATTR_RO(fan1_input); 1439 static DEVICE_ATTR_RO(fan1_label); 1440 1441 /* Temperature */ 1442 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1443 1444 static struct attribute *hwmon_attributes[] = { 1445 &dev_attr_pwm1.attr, 1446 &dev_attr_pwm1_enable.attr, 1447 &dev_attr_fan1_input.attr, 1448 &dev_attr_fan1_label.attr, 1449 1450 &dev_attr_temp1_input.attr, 1451 NULL 1452 }; 1453 1454 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1455 struct attribute *attr, int idx) 1456 { 1457 struct device *dev = container_of(kobj, struct device, kobj); 1458 struct platform_device *pdev = to_platform_device(dev->parent); 1459 struct asus_wmi *asus = platform_get_drvdata(pdev); 1460 int dev_id = -1; 1461 int fan_attr = -1; 1462 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1463 bool ok = true; 1464 1465 if (attr == &dev_attr_pwm1.attr) 1466 dev_id = ASUS_WMI_DEVID_FAN_CTRL; 1467 else if (attr == &dev_attr_temp1_input.attr) 1468 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL; 1469 1470 1471 if (attr == &dev_attr_fan1_input.attr 1472 || attr == &dev_attr_fan1_label.attr 1473 || attr == &dev_attr_pwm1.attr 1474 || attr == &dev_attr_pwm1_enable.attr) { 1475 fan_attr = 1; 1476 } 1477 1478 if (dev_id != -1) { 1479 int err = asus_wmi_get_devstate(asus, dev_id, &value); 1480 1481 if (err < 0 && fan_attr == -1) 1482 return 0; /* can't return negative here */ 1483 } 1484 1485 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) { 1486 /* 1487 * We need to find a better way, probably using sfun, 1488 * bits or spec ... 1489 * Currently we disable it if: 1490 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1491 * - reverved bits are non-zero 1492 * - sfun and presence bit are not set 1493 */ 1494 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1495 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))) 1496 ok = false; 1497 else 1498 ok = fan_attr <= asus->asus_hwmon_num_fans; 1499 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) { 1500 /* If value is zero, something is clearly wrong */ 1501 if (!value) 1502 ok = false; 1503 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) { 1504 ok = true; 1505 } else { 1506 ok = false; 1507 } 1508 1509 return ok ? attr->mode : 0; 1510 } 1511 1512 static const struct attribute_group hwmon_attribute_group = { 1513 .is_visible = asus_hwmon_sysfs_is_visible, 1514 .attrs = hwmon_attributes 1515 }; 1516 __ATTRIBUTE_GROUPS(hwmon_attribute); 1517 1518 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1519 { 1520 struct device *hwmon; 1521 1522 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev, 1523 "asus", asus, 1524 hwmon_attribute_groups); 1525 if (IS_ERR(hwmon)) { 1526 pr_err("Could not register asus hwmon device\n"); 1527 return PTR_ERR(hwmon); 1528 } 1529 return 0; 1530 } 1531 1532 /* 1533 * Backlight 1534 */ 1535 static int read_backlight_power(struct asus_wmi *asus) 1536 { 1537 int ret; 1538 if (asus->driver->quirks->store_backlight_power) 1539 ret = !asus->driver->panel_power; 1540 else 1541 ret = asus_wmi_get_devstate_simple(asus, 1542 ASUS_WMI_DEVID_BACKLIGHT); 1543 1544 if (ret < 0) 1545 return ret; 1546 1547 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1548 } 1549 1550 static int read_brightness_max(struct asus_wmi *asus) 1551 { 1552 u32 retval; 1553 int err; 1554 1555 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1556 1557 if (err < 0) 1558 return err; 1559 1560 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1561 retval >>= 8; 1562 1563 if (!retval) 1564 return -ENODEV; 1565 1566 return retval; 1567 } 1568 1569 static int read_brightness(struct backlight_device *bd) 1570 { 1571 struct asus_wmi *asus = bl_get_data(bd); 1572 u32 retval; 1573 int err; 1574 1575 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1576 1577 if (err < 0) 1578 return err; 1579 1580 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1581 } 1582 1583 static u32 get_scalar_command(struct backlight_device *bd) 1584 { 1585 struct asus_wmi *asus = bl_get_data(bd); 1586 u32 ctrl_param = 0; 1587 1588 if ((asus->driver->brightness < bd->props.brightness) || 1589 bd->props.brightness == bd->props.max_brightness) 1590 ctrl_param = 0x00008001; 1591 else if ((asus->driver->brightness > bd->props.brightness) || 1592 bd->props.brightness == 0) 1593 ctrl_param = 0x00008000; 1594 1595 asus->driver->brightness = bd->props.brightness; 1596 1597 return ctrl_param; 1598 } 1599 1600 static int update_bl_status(struct backlight_device *bd) 1601 { 1602 struct asus_wmi *asus = bl_get_data(bd); 1603 u32 ctrl_param; 1604 int power, err = 0; 1605 1606 power = read_backlight_power(asus); 1607 if (power != -ENODEV && bd->props.power != power) { 1608 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1609 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1610 ctrl_param, NULL); 1611 if (asus->driver->quirks->store_backlight_power) 1612 asus->driver->panel_power = bd->props.power; 1613 1614 /* When using scalar brightness, updating the brightness 1615 * will mess with the backlight power */ 1616 if (asus->driver->quirks->scalar_panel_brightness) 1617 return err; 1618 } 1619 1620 if (asus->driver->quirks->scalar_panel_brightness) 1621 ctrl_param = get_scalar_command(bd); 1622 else 1623 ctrl_param = bd->props.brightness; 1624 1625 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1626 ctrl_param, NULL); 1627 1628 return err; 1629 } 1630 1631 static const struct backlight_ops asus_wmi_bl_ops = { 1632 .get_brightness = read_brightness, 1633 .update_status = update_bl_status, 1634 }; 1635 1636 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1637 { 1638 struct backlight_device *bd = asus->backlight_device; 1639 int old = bd->props.brightness; 1640 int new = old; 1641 1642 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1643 new = code - NOTIFY_BRNUP_MIN + 1; 1644 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1645 new = code - NOTIFY_BRNDOWN_MIN; 1646 1647 bd->props.brightness = new; 1648 backlight_update_status(bd); 1649 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1650 1651 return old; 1652 } 1653 1654 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1655 { 1656 struct backlight_device *bd; 1657 struct backlight_properties props; 1658 int max; 1659 int power; 1660 1661 max = read_brightness_max(asus); 1662 if (max < 0) 1663 return max; 1664 1665 power = read_backlight_power(asus); 1666 1667 if (power == -ENODEV) 1668 power = FB_BLANK_UNBLANK; 1669 else if (power < 0) 1670 return power; 1671 1672 memset(&props, 0, sizeof(struct backlight_properties)); 1673 props.type = BACKLIGHT_PLATFORM; 1674 props.max_brightness = max; 1675 bd = backlight_device_register(asus->driver->name, 1676 &asus->platform_device->dev, asus, 1677 &asus_wmi_bl_ops, &props); 1678 if (IS_ERR(bd)) { 1679 pr_err("Could not register backlight device\n"); 1680 return PTR_ERR(bd); 1681 } 1682 1683 asus->backlight_device = bd; 1684 1685 if (asus->driver->quirks->store_backlight_power) 1686 asus->driver->panel_power = power; 1687 1688 bd->props.brightness = read_brightness(bd); 1689 bd->props.power = power; 1690 backlight_update_status(bd); 1691 1692 asus->driver->brightness = bd->props.brightness; 1693 1694 return 0; 1695 } 1696 1697 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1698 { 1699 backlight_device_unregister(asus->backlight_device); 1700 1701 asus->backlight_device = NULL; 1702 } 1703 1704 static int is_display_toggle(int code) 1705 { 1706 /* display toggle keys */ 1707 if ((code >= 0x61 && code <= 0x67) || 1708 (code >= 0x8c && code <= 0x93) || 1709 (code >= 0xa0 && code <= 0xa7) || 1710 (code >= 0xd0 && code <= 0xd5)) 1711 return 1; 1712 1713 return 0; 1714 } 1715 1716 static void asus_wmi_notify(u32 value, void *context) 1717 { 1718 struct asus_wmi *asus = context; 1719 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1720 union acpi_object *obj; 1721 acpi_status status; 1722 int code; 1723 int orig_code; 1724 unsigned int key_value = 1; 1725 bool autorelease = 1; 1726 1727 status = wmi_get_event_data(value, &response); 1728 if (status != AE_OK) { 1729 pr_err("bad event status 0x%x\n", status); 1730 return; 1731 } 1732 1733 obj = (union acpi_object *)response.pointer; 1734 1735 if (!obj || obj->type != ACPI_TYPE_INTEGER) 1736 goto exit; 1737 1738 code = obj->integer.value; 1739 orig_code = code; 1740 1741 if (asus->driver->key_filter) { 1742 asus->driver->key_filter(asus->driver, &code, &key_value, 1743 &autorelease); 1744 if (code == ASUS_WMI_KEY_IGNORE) 1745 goto exit; 1746 } 1747 1748 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1749 code = ASUS_WMI_BRN_UP; 1750 else if (code >= NOTIFY_BRNDOWN_MIN && 1751 code <= NOTIFY_BRNDOWN_MAX) 1752 code = ASUS_WMI_BRN_DOWN; 1753 1754 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 1755 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 1756 asus_wmi_backlight_notify(asus, orig_code); 1757 goto exit; 1758 } 1759 } 1760 1761 if (is_display_toggle(code) && 1762 asus->driver->quirks->no_display_toggle) 1763 goto exit; 1764 1765 if (!sparse_keymap_report_event(asus->inputdev, code, 1766 key_value, autorelease)) 1767 pr_info("Unknown key %x pressed\n", code); 1768 1769 exit: 1770 kfree(obj); 1771 } 1772 1773 /* 1774 * Sys helpers 1775 */ 1776 static int parse_arg(const char *buf, unsigned long count, int *val) 1777 { 1778 if (!count) 1779 return 0; 1780 if (sscanf(buf, "%i", val) != 1) 1781 return -EINVAL; 1782 return count; 1783 } 1784 1785 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1786 const char *buf, size_t count) 1787 { 1788 u32 retval; 1789 int rv, err, value; 1790 1791 value = asus_wmi_get_devstate_simple(asus, devid); 1792 if (value < 0) 1793 return value; 1794 1795 rv = parse_arg(buf, count, &value); 1796 err = asus_wmi_set_devstate(devid, value, &retval); 1797 1798 if (err < 0) 1799 return err; 1800 1801 return rv; 1802 } 1803 1804 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1805 { 1806 int value = asus_wmi_get_devstate_simple(asus, devid); 1807 1808 if (value < 0) 1809 return value; 1810 1811 return sprintf(buf, "%d\n", value); 1812 } 1813 1814 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1815 static ssize_t show_##_name(struct device *dev, \ 1816 struct device_attribute *attr, \ 1817 char *buf) \ 1818 { \ 1819 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1820 \ 1821 return show_sys_wmi(asus, _cm, buf); \ 1822 } \ 1823 static ssize_t store_##_name(struct device *dev, \ 1824 struct device_attribute *attr, \ 1825 const char *buf, size_t count) \ 1826 { \ 1827 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1828 \ 1829 return store_sys_wmi(asus, _cm, buf, count); \ 1830 } \ 1831 static struct device_attribute dev_attr_##_name = { \ 1832 .attr = { \ 1833 .name = __stringify(_name), \ 1834 .mode = _mode }, \ 1835 .show = show_##_name, \ 1836 .store = store_##_name, \ 1837 } 1838 1839 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1840 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1841 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1842 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1843 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 1844 1845 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 1846 const char *buf, size_t count) 1847 { 1848 int value, rv; 1849 1850 if (!count || sscanf(buf, "%i", &value) != 1) 1851 return -EINVAL; 1852 if (value < 0 || value > 2) 1853 return -EINVAL; 1854 1855 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1856 if (rv < 0) 1857 return rv; 1858 1859 return count; 1860 } 1861 1862 static DEVICE_ATTR_WO(cpufv); 1863 1864 static struct attribute *platform_attributes[] = { 1865 &dev_attr_cpufv.attr, 1866 &dev_attr_camera.attr, 1867 &dev_attr_cardr.attr, 1868 &dev_attr_touchpad.attr, 1869 &dev_attr_lid_resume.attr, 1870 &dev_attr_als_enable.attr, 1871 NULL 1872 }; 1873 1874 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1875 struct attribute *attr, int idx) 1876 { 1877 struct device *dev = container_of(kobj, struct device, kobj); 1878 struct asus_wmi *asus = dev_get_drvdata(dev); 1879 bool ok = true; 1880 int devid = -1; 1881 1882 if (attr == &dev_attr_camera.attr) 1883 devid = ASUS_WMI_DEVID_CAMERA; 1884 else if (attr == &dev_attr_cardr.attr) 1885 devid = ASUS_WMI_DEVID_CARDREADER; 1886 else if (attr == &dev_attr_touchpad.attr) 1887 devid = ASUS_WMI_DEVID_TOUCHPAD; 1888 else if (attr == &dev_attr_lid_resume.attr) 1889 devid = ASUS_WMI_DEVID_LID_RESUME; 1890 else if (attr == &dev_attr_als_enable.attr) 1891 devid = ASUS_WMI_DEVID_ALS_ENABLE; 1892 1893 if (devid != -1) 1894 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1895 1896 return ok ? attr->mode : 0; 1897 } 1898 1899 static const struct attribute_group platform_attribute_group = { 1900 .is_visible = asus_sysfs_is_visible, 1901 .attrs = platform_attributes 1902 }; 1903 1904 static void asus_wmi_sysfs_exit(struct platform_device *device) 1905 { 1906 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1907 } 1908 1909 static int asus_wmi_sysfs_init(struct platform_device *device) 1910 { 1911 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1912 } 1913 1914 /* 1915 * Platform device 1916 */ 1917 static int asus_wmi_platform_init(struct asus_wmi *asus) 1918 { 1919 int rv; 1920 1921 /* INIT enable hotkeys on some models */ 1922 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1923 pr_info("Initialization: %#x\n", rv); 1924 1925 /* We don't know yet what to do with this version... */ 1926 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1927 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 1928 asus->spec = rv; 1929 } 1930 1931 /* 1932 * The SFUN method probably allows the original driver to get the list 1933 * of features supported by a given model. For now, 0x0100 or 0x0800 1934 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1935 * The significance of others is yet to be found. 1936 */ 1937 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1938 pr_info("SFUN value: %#x\n", rv); 1939 asus->sfun = rv; 1940 } 1941 1942 /* 1943 * Eee PC and Notebooks seems to have different method_id for DSTS, 1944 * but it may also be related to the BIOS's SPEC. 1945 * Note, on most Eeepc, there is no way to check if a method exist 1946 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1947 * but once again, SPEC may probably be used for that kind of things. 1948 */ 1949 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1950 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1951 else 1952 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1953 1954 /* CWAP allow to define the behavior of the Fn+F2 key, 1955 * this method doesn't seems to be present on Eee PCs */ 1956 if (asus->driver->quirks->wapf >= 0) 1957 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1958 asus->driver->quirks->wapf, NULL); 1959 1960 return asus_wmi_sysfs_init(asus->platform_device); 1961 } 1962 1963 static void asus_wmi_platform_exit(struct asus_wmi *asus) 1964 { 1965 asus_wmi_sysfs_exit(asus->platform_device); 1966 } 1967 1968 /* 1969 * debugfs 1970 */ 1971 struct asus_wmi_debugfs_node { 1972 struct asus_wmi *asus; 1973 char *name; 1974 int (*show) (struct seq_file *m, void *data); 1975 }; 1976 1977 static int show_dsts(struct seq_file *m, void *data) 1978 { 1979 struct asus_wmi *asus = m->private; 1980 int err; 1981 u32 retval = -1; 1982 1983 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1984 1985 if (err < 0) 1986 return err; 1987 1988 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1989 1990 return 0; 1991 } 1992 1993 static int show_devs(struct seq_file *m, void *data) 1994 { 1995 struct asus_wmi *asus = m->private; 1996 int err; 1997 u32 retval = -1; 1998 1999 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 2000 &retval); 2001 2002 if (err < 0) 2003 return err; 2004 2005 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 2006 asus->debug.ctrl_param, retval); 2007 2008 return 0; 2009 } 2010 2011 static int show_call(struct seq_file *m, void *data) 2012 { 2013 struct asus_wmi *asus = m->private; 2014 struct bios_args args = { 2015 .arg0 = asus->debug.dev_id, 2016 .arg1 = asus->debug.ctrl_param, 2017 }; 2018 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2019 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2020 union acpi_object *obj; 2021 acpi_status status; 2022 2023 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2024 0, asus->debug.method_id, 2025 &input, &output); 2026 2027 if (ACPI_FAILURE(status)) 2028 return -EIO; 2029 2030 obj = (union acpi_object *)output.pointer; 2031 if (obj && obj->type == ACPI_TYPE_INTEGER) 2032 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2033 asus->debug.dev_id, asus->debug.ctrl_param, 2034 (u32) obj->integer.value); 2035 else 2036 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2037 asus->debug.dev_id, asus->debug.ctrl_param, 2038 obj ? obj->type : -1); 2039 2040 kfree(obj); 2041 2042 return 0; 2043 } 2044 2045 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2046 {NULL, "devs", show_devs}, 2047 {NULL, "dsts", show_dsts}, 2048 {NULL, "call", show_call}, 2049 }; 2050 2051 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2052 { 2053 struct asus_wmi_debugfs_node *node = inode->i_private; 2054 2055 return single_open(file, node->show, node->asus); 2056 } 2057 2058 static const struct file_operations asus_wmi_debugfs_io_ops = { 2059 .owner = THIS_MODULE, 2060 .open = asus_wmi_debugfs_open, 2061 .read = seq_read, 2062 .llseek = seq_lseek, 2063 .release = single_release, 2064 }; 2065 2066 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2067 { 2068 debugfs_remove_recursive(asus->debug.root); 2069 } 2070 2071 static int asus_wmi_debugfs_init(struct asus_wmi *asus) 2072 { 2073 struct dentry *dent; 2074 int i; 2075 2076 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2077 if (!asus->debug.root) { 2078 pr_err("failed to create debugfs directory\n"); 2079 goto error_debugfs; 2080 } 2081 2082 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 2083 asus->debug.root, &asus->debug.method_id); 2084 if (!dent) 2085 goto error_debugfs; 2086 2087 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 2088 asus->debug.root, &asus->debug.dev_id); 2089 if (!dent) 2090 goto error_debugfs; 2091 2092 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 2093 asus->debug.root, &asus->debug.ctrl_param); 2094 if (!dent) 2095 goto error_debugfs; 2096 2097 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2098 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2099 2100 node->asus = asus; 2101 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2102 asus->debug.root, node, 2103 &asus_wmi_debugfs_io_ops); 2104 if (!dent) { 2105 pr_err("failed to create debug file: %s\n", node->name); 2106 goto error_debugfs; 2107 } 2108 } 2109 2110 return 0; 2111 2112 error_debugfs: 2113 asus_wmi_debugfs_exit(asus); 2114 return -ENOMEM; 2115 } 2116 2117 static int asus_wmi_fan_init(struct asus_wmi *asus) 2118 { 2119 int status; 2120 2121 asus->asus_hwmon_pwm = -1; 2122 asus->asus_hwmon_num_fans = -1; 2123 asus->asus_hwmon_fan_manual_mode = false; 2124 2125 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans); 2126 if (status) { 2127 asus->asus_hwmon_num_fans = 0; 2128 pr_warn("Could not determine number of fans: %d\n", status); 2129 return -ENXIO; 2130 } 2131 2132 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans); 2133 return 0; 2134 } 2135 2136 /* 2137 * WMI Driver 2138 */ 2139 static int asus_wmi_add(struct platform_device *pdev) 2140 { 2141 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2142 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2143 struct asus_wmi *asus; 2144 const char *chassis_type; 2145 acpi_status status; 2146 int err; 2147 u32 result; 2148 2149 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2150 if (!asus) 2151 return -ENOMEM; 2152 2153 asus->driver = wdrv; 2154 asus->platform_device = pdev; 2155 wdrv->platform_device = pdev; 2156 platform_set_drvdata(asus->platform_device, asus); 2157 2158 if (wdrv->detect_quirks) 2159 wdrv->detect_quirks(asus->driver); 2160 2161 err = asus_wmi_platform_init(asus); 2162 if (err) 2163 goto fail_platform; 2164 2165 err = asus_wmi_input_init(asus); 2166 if (err) 2167 goto fail_input; 2168 2169 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2170 asus_hwmon_fan_set_auto(asus); 2171 2172 err = asus_wmi_hwmon_init(asus); 2173 if (err) 2174 goto fail_hwmon; 2175 2176 err = asus_wmi_led_init(asus); 2177 if (err) 2178 goto fail_leds; 2179 2180 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2181 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2182 asus->driver->wlan_ctrl_by_user = 1; 2183 2184 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2185 err = asus_wmi_rfkill_init(asus); 2186 if (err) 2187 goto fail_rfkill; 2188 } 2189 2190 if (asus->driver->quirks->wmi_force_als_set) 2191 asus_wmi_set_als(); 2192 2193 /* Some Asus desktop boards export an acpi-video backlight interface, 2194 stop this from showing up */ 2195 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2196 if (chassis_type && !strcmp(chassis_type, "3")) 2197 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2198 2199 if (asus->driver->quirks->wmi_backlight_power) 2200 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2201 2202 if (asus->driver->quirks->wmi_backlight_native) 2203 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2204 2205 if (asus->driver->quirks->xusb2pr) 2206 asus_wmi_set_xusb2pr(asus); 2207 2208 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2209 err = asus_wmi_backlight_init(asus); 2210 if (err && err != -ENODEV) 2211 goto fail_backlight; 2212 } 2213 2214 status = wmi_install_notify_handler(asus->driver->event_guid, 2215 asus_wmi_notify, asus); 2216 if (ACPI_FAILURE(status)) { 2217 pr_err("Unable to register notify handler - %d\n", status); 2218 err = -ENODEV; 2219 goto fail_wmi_handler; 2220 } 2221 2222 err = asus_wmi_debugfs_init(asus); 2223 if (err) 2224 goto fail_debugfs; 2225 2226 return 0; 2227 2228 fail_debugfs: 2229 wmi_remove_notify_handler(asus->driver->event_guid); 2230 fail_wmi_handler: 2231 asus_wmi_backlight_exit(asus); 2232 fail_backlight: 2233 asus_wmi_rfkill_exit(asus); 2234 fail_rfkill: 2235 asus_wmi_led_exit(asus); 2236 fail_leds: 2237 fail_hwmon: 2238 asus_wmi_input_exit(asus); 2239 fail_input: 2240 asus_wmi_platform_exit(asus); 2241 fail_platform: 2242 kfree(asus); 2243 return err; 2244 } 2245 2246 static int asus_wmi_remove(struct platform_device *device) 2247 { 2248 struct asus_wmi *asus; 2249 2250 asus = platform_get_drvdata(device); 2251 wmi_remove_notify_handler(asus->driver->event_guid); 2252 asus_wmi_backlight_exit(asus); 2253 asus_wmi_input_exit(asus); 2254 asus_wmi_led_exit(asus); 2255 asus_wmi_rfkill_exit(asus); 2256 asus_wmi_debugfs_exit(asus); 2257 asus_wmi_platform_exit(asus); 2258 asus_hwmon_fan_set_auto(asus); 2259 2260 kfree(asus); 2261 return 0; 2262 } 2263 2264 /* 2265 * Platform driver - hibernate/resume callbacks 2266 */ 2267 static int asus_hotk_thaw(struct device *device) 2268 { 2269 struct asus_wmi *asus = dev_get_drvdata(device); 2270 2271 if (asus->wlan.rfkill) { 2272 bool wlan; 2273 2274 /* 2275 * Work around bios bug - acpi _PTS turns off the wireless led 2276 * during suspend. Normally it restores it on resume, but 2277 * we should kick it ourselves in case hibernation is aborted. 2278 */ 2279 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2280 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2281 } 2282 2283 return 0; 2284 } 2285 2286 static int asus_hotk_resume(struct device *device) 2287 { 2288 struct asus_wmi *asus = dev_get_drvdata(device); 2289 2290 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2291 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2292 2293 return 0; 2294 } 2295 2296 static int asus_hotk_restore(struct device *device) 2297 { 2298 struct asus_wmi *asus = dev_get_drvdata(device); 2299 int bl; 2300 2301 /* Refresh both wlan rfkill state and pci hotplug */ 2302 if (asus->wlan.rfkill) 2303 asus_rfkill_hotplug(asus); 2304 2305 if (asus->bluetooth.rfkill) { 2306 bl = !asus_wmi_get_devstate_simple(asus, 2307 ASUS_WMI_DEVID_BLUETOOTH); 2308 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2309 } 2310 if (asus->wimax.rfkill) { 2311 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2312 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2313 } 2314 if (asus->wwan3g.rfkill) { 2315 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2316 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2317 } 2318 if (asus->gps.rfkill) { 2319 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2320 rfkill_set_sw_state(asus->gps.rfkill, bl); 2321 } 2322 if (asus->uwb.rfkill) { 2323 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2324 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2325 } 2326 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2327 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2328 2329 return 0; 2330 } 2331 2332 static const struct dev_pm_ops asus_pm_ops = { 2333 .thaw = asus_hotk_thaw, 2334 .restore = asus_hotk_restore, 2335 .resume = asus_hotk_resume, 2336 }; 2337 2338 static int asus_wmi_probe(struct platform_device *pdev) 2339 { 2340 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2341 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2342 int ret; 2343 2344 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2345 pr_warn("Management GUID not found\n"); 2346 return -ENODEV; 2347 } 2348 2349 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2350 pr_warn("Event GUID not found\n"); 2351 return -ENODEV; 2352 } 2353 2354 if (wdrv->probe) { 2355 ret = wdrv->probe(pdev); 2356 if (ret) 2357 return ret; 2358 } 2359 2360 return asus_wmi_add(pdev); 2361 } 2362 2363 static bool used; 2364 2365 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2366 { 2367 struct platform_driver *platform_driver; 2368 struct platform_device *platform_device; 2369 2370 if (used) 2371 return -EBUSY; 2372 2373 platform_driver = &driver->platform_driver; 2374 platform_driver->remove = asus_wmi_remove; 2375 platform_driver->driver.owner = driver->owner; 2376 platform_driver->driver.name = driver->name; 2377 platform_driver->driver.pm = &asus_pm_ops; 2378 2379 platform_device = platform_create_bundle(platform_driver, 2380 asus_wmi_probe, 2381 NULL, 0, NULL, 0); 2382 if (IS_ERR(platform_device)) 2383 return PTR_ERR(platform_device); 2384 2385 used = true; 2386 return 0; 2387 } 2388 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2389 2390 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2391 { 2392 platform_device_unregister(driver->platform_device); 2393 platform_driver_unregister(&driver->platform_driver); 2394 used = false; 2395 } 2396 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2397 2398 static int __init asus_wmi_init(void) 2399 { 2400 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2401 pr_info("Asus Management GUID not found\n"); 2402 return -ENODEV; 2403 } 2404 2405 pr_info("ASUS WMI generic driver loaded\n"); 2406 return 0; 2407 } 2408 2409 static void __exit asus_wmi_exit(void) 2410 { 2411 pr_info("ASUS WMI generic driver unloaded\n"); 2412 } 2413 2414 module_init(asus_wmi_init); 2415 module_exit(asus_wmi_exit); 2416