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 struct bios_args { 167 u32 arg0; 168 u32 arg1; 169 } __packed; 170 171 /* 172 * Struct that's used for all methods called via AGFN. Naming is 173 * identically to the AML code. 174 */ 175 struct agfn_args { 176 u16 mfun; /* probably "Multi-function" to be called */ 177 u16 sfun; /* probably "Sub-function" to be called */ 178 u16 len; /* size of the hole struct, including subfunction fields */ 179 u8 stas; /* not used by now */ 180 u8 err; /* zero on success */ 181 } __packed; 182 183 /* struct used for calling fan read and write methods */ 184 struct fan_args { 185 struct agfn_args agfn; /* common fields */ 186 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 187 u32 speed; /* read: RPM/100 - write: 0-255 */ 188 } __packed; 189 190 /* 191 * <platform>/ - debugfs root directory 192 * dev_id - current dev_id 193 * ctrl_param - current ctrl_param 194 * method_id - current method_id 195 * devs - call DEVS(dev_id, ctrl_param) and print result 196 * dsts - call DSTS(dev_id) and print result 197 * call - call method_id(dev_id, ctrl_param) and print result 198 */ 199 struct asus_wmi_debug { 200 struct dentry *root; 201 u32 method_id; 202 u32 dev_id; 203 u32 ctrl_param; 204 }; 205 206 struct asus_rfkill { 207 struct asus_wmi *asus; 208 struct rfkill *rfkill; 209 u32 dev_id; 210 }; 211 212 struct asus_wmi { 213 int dsts_id; 214 int spec; 215 int sfun; 216 217 struct input_dev *inputdev; 218 struct backlight_device *backlight_device; 219 struct platform_device *platform_device; 220 221 struct led_classdev wlan_led; 222 int wlan_led_wk; 223 struct led_classdev tpd_led; 224 int tpd_led_wk; 225 struct led_classdev kbd_led; 226 int kbd_led_wk; 227 struct led_classdev lightbar_led; 228 int lightbar_led_wk; 229 struct workqueue_struct *led_workqueue; 230 struct work_struct tpd_led_work; 231 struct work_struct kbd_led_work; 232 struct work_struct wlan_led_work; 233 struct work_struct lightbar_led_work; 234 235 struct asus_rfkill wlan; 236 struct asus_rfkill bluetooth; 237 struct asus_rfkill wimax; 238 struct asus_rfkill wwan3g; 239 struct asus_rfkill gps; 240 struct asus_rfkill uwb; 241 242 bool asus_hwmon_fan_manual_mode; 243 int asus_hwmon_num_fans; 244 int asus_hwmon_pwm; 245 246 struct hotplug_slot *hotplug_slot; 247 struct mutex hotplug_lock; 248 struct mutex wmi_lock; 249 struct workqueue_struct *hotplug_workqueue; 250 struct work_struct hotplug_work; 251 252 struct asus_wmi_debug debug; 253 254 struct asus_wmi_driver *driver; 255 }; 256 257 static int asus_wmi_input_init(struct asus_wmi *asus) 258 { 259 int err; 260 261 asus->inputdev = input_allocate_device(); 262 if (!asus->inputdev) 263 return -ENOMEM; 264 265 asus->inputdev->name = asus->driver->input_name; 266 asus->inputdev->phys = asus->driver->input_phys; 267 asus->inputdev->id.bustype = BUS_HOST; 268 asus->inputdev->dev.parent = &asus->platform_device->dev; 269 set_bit(EV_REP, asus->inputdev->evbit); 270 271 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 272 if (err) 273 goto err_free_dev; 274 275 err = input_register_device(asus->inputdev); 276 if (err) 277 goto err_free_dev; 278 279 return 0; 280 281 err_free_dev: 282 input_free_device(asus->inputdev); 283 return err; 284 } 285 286 static void asus_wmi_input_exit(struct asus_wmi *asus) 287 { 288 if (asus->inputdev) 289 input_unregister_device(asus->inputdev); 290 291 asus->inputdev = NULL; 292 } 293 294 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, 295 u32 *retval) 296 { 297 struct bios_args args = { 298 .arg0 = arg0, 299 .arg1 = arg1, 300 }; 301 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 302 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 303 acpi_status status; 304 union acpi_object *obj; 305 u32 tmp = 0; 306 307 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id, 308 &input, &output); 309 310 if (ACPI_FAILURE(status)) 311 goto exit; 312 313 obj = (union acpi_object *)output.pointer; 314 if (obj && obj->type == ACPI_TYPE_INTEGER) 315 tmp = (u32) obj->integer.value; 316 317 if (retval) 318 *retval = tmp; 319 320 kfree(obj); 321 322 exit: 323 if (ACPI_FAILURE(status)) 324 return -EIO; 325 326 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 327 return -ENODEV; 328 329 return 0; 330 } 331 332 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 333 { 334 struct acpi_buffer input; 335 u64 phys_addr; 336 u32 retval; 337 u32 status = -1; 338 339 /* 340 * Copy to dma capable address otherwise memory corruption occurs as 341 * bios has to be able to access it. 342 */ 343 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL); 344 input.length = args.length; 345 if (!input.pointer) 346 return -ENOMEM; 347 phys_addr = virt_to_phys(input.pointer); 348 memcpy(input.pointer, args.pointer, args.length); 349 350 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 351 phys_addr, 0, &retval); 352 if (!status) 353 memcpy(args.pointer, input.pointer, args.length); 354 355 kfree(input.pointer); 356 if (status) 357 return -ENXIO; 358 359 return retval; 360 } 361 362 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 363 { 364 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 365 } 366 367 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 368 u32 *retval) 369 { 370 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 371 ctrl_param, retval); 372 } 373 374 /* Helper for special devices with magic return codes */ 375 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 376 u32 dev_id, u32 mask) 377 { 378 u32 retval = 0; 379 int err; 380 381 err = asus_wmi_get_devstate(asus, dev_id, &retval); 382 383 if (err < 0) 384 return err; 385 386 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 387 return -ENODEV; 388 389 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 390 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 391 return -ENODEV; 392 } 393 394 return retval & mask; 395 } 396 397 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 398 { 399 return asus_wmi_get_devstate_bits(asus, dev_id, 400 ASUS_WMI_DSTS_STATUS_BIT); 401 } 402 403 /* 404 * LEDs 405 */ 406 /* 407 * These functions actually update the LED's, and are called from a 408 * workqueue. By doing this as separate work rather than when the LED 409 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 410 * potentially bad time, such as a timer interrupt. 411 */ 412 static void tpd_led_update(struct work_struct *work) 413 { 414 int ctrl_param; 415 struct asus_wmi *asus; 416 417 asus = container_of(work, struct asus_wmi, tpd_led_work); 418 419 ctrl_param = asus->tpd_led_wk; 420 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 421 } 422 423 static void tpd_led_set(struct led_classdev *led_cdev, 424 enum led_brightness value) 425 { 426 struct asus_wmi *asus; 427 428 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 429 430 asus->tpd_led_wk = !!value; 431 queue_work(asus->led_workqueue, &asus->tpd_led_work); 432 } 433 434 static int read_tpd_led_state(struct asus_wmi *asus) 435 { 436 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 437 } 438 439 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 440 { 441 struct asus_wmi *asus; 442 443 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 444 445 return read_tpd_led_state(asus); 446 } 447 448 static void kbd_led_update(struct work_struct *work) 449 { 450 int ctrl_param = 0; 451 struct asus_wmi *asus; 452 453 asus = container_of(work, struct asus_wmi, kbd_led_work); 454 455 /* 456 * bits 0-2: level 457 * bit 7: light on/off 458 */ 459 if (asus->kbd_led_wk > 0) 460 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 461 462 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 463 } 464 465 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 466 { 467 int retval; 468 469 /* 470 * bits 0-2: level 471 * bit 7: light on/off 472 * bit 8-10: environment (0: dark, 1: normal, 2: light) 473 * bit 17: status unknown 474 */ 475 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 476 0xFFFF); 477 478 /* Unknown status is considered as off */ 479 if (retval == 0x8000) 480 retval = 0; 481 482 if (retval >= 0) { 483 if (level) 484 *level = retval & 0x7F; 485 if (env) 486 *env = (retval >> 8) & 0x7F; 487 retval = 0; 488 } 489 490 return retval; 491 } 492 493 static void kbd_led_set(struct led_classdev *led_cdev, 494 enum led_brightness value) 495 { 496 struct asus_wmi *asus; 497 498 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 499 500 if (value > asus->kbd_led.max_brightness) 501 value = asus->kbd_led.max_brightness; 502 else if (value < 0) 503 value = 0; 504 505 asus->kbd_led_wk = value; 506 queue_work(asus->led_workqueue, &asus->kbd_led_work); 507 } 508 509 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 510 { 511 struct asus_wmi *asus; 512 int retval, value; 513 514 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 515 516 retval = kbd_led_read(asus, &value, NULL); 517 518 if (retval < 0) 519 return retval; 520 521 return value; 522 } 523 524 static int wlan_led_unknown_state(struct asus_wmi *asus) 525 { 526 u32 result; 527 528 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 529 530 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 531 } 532 533 static int wlan_led_presence(struct asus_wmi *asus) 534 { 535 u32 result; 536 537 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 538 539 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 540 } 541 542 static void wlan_led_update(struct work_struct *work) 543 { 544 int ctrl_param; 545 struct asus_wmi *asus; 546 547 asus = container_of(work, struct asus_wmi, wlan_led_work); 548 549 ctrl_param = asus->wlan_led_wk; 550 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 551 } 552 553 static void wlan_led_set(struct led_classdev *led_cdev, 554 enum led_brightness value) 555 { 556 struct asus_wmi *asus; 557 558 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 559 560 asus->wlan_led_wk = !!value; 561 queue_work(asus->led_workqueue, &asus->wlan_led_work); 562 } 563 564 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 565 { 566 struct asus_wmi *asus; 567 u32 result; 568 569 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 570 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 571 572 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 573 } 574 575 static void lightbar_led_update(struct work_struct *work) 576 { 577 struct asus_wmi *asus; 578 int ctrl_param; 579 580 asus = container_of(work, struct asus_wmi, lightbar_led_work); 581 582 ctrl_param = asus->lightbar_led_wk; 583 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); 584 } 585 586 static void lightbar_led_set(struct led_classdev *led_cdev, 587 enum led_brightness value) 588 { 589 struct asus_wmi *asus; 590 591 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 592 593 asus->lightbar_led_wk = !!value; 594 queue_work(asus->led_workqueue, &asus->lightbar_led_work); 595 } 596 597 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) 598 { 599 struct asus_wmi *asus; 600 u32 result; 601 602 asus = container_of(led_cdev, struct asus_wmi, lightbar_led); 603 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 604 605 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; 606 } 607 608 static int lightbar_led_presence(struct asus_wmi *asus) 609 { 610 u32 result; 611 612 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); 613 614 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 615 } 616 617 static void asus_wmi_led_exit(struct asus_wmi *asus) 618 { 619 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 620 led_classdev_unregister(&asus->kbd_led); 621 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 622 led_classdev_unregister(&asus->tpd_led); 623 if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) 624 led_classdev_unregister(&asus->wlan_led); 625 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev)) 626 led_classdev_unregister(&asus->lightbar_led); 627 if (asus->led_workqueue) 628 destroy_workqueue(asus->led_workqueue); 629 } 630 631 static int asus_wmi_led_init(struct asus_wmi *asus) 632 { 633 int rv = 0, led_val; 634 635 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 636 if (!asus->led_workqueue) 637 return -ENOMEM; 638 639 if (read_tpd_led_state(asus) >= 0) { 640 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 641 642 asus->tpd_led.name = "asus::touchpad"; 643 asus->tpd_led.brightness_set = tpd_led_set; 644 asus->tpd_led.brightness_get = tpd_led_get; 645 asus->tpd_led.max_brightness = 1; 646 647 rv = led_classdev_register(&asus->platform_device->dev, 648 &asus->tpd_led); 649 if (rv) 650 goto error; 651 } 652 653 led_val = kbd_led_read(asus, NULL, NULL); 654 if (led_val >= 0) { 655 INIT_WORK(&asus->kbd_led_work, kbd_led_update); 656 657 asus->kbd_led_wk = led_val; 658 asus->kbd_led.name = "asus::kbd_backlight"; 659 asus->kbd_led.brightness_set = kbd_led_set; 660 asus->kbd_led.brightness_get = kbd_led_get; 661 asus->kbd_led.max_brightness = 3; 662 663 rv = led_classdev_register(&asus->platform_device->dev, 664 &asus->kbd_led); 665 if (rv) 666 goto error; 667 } 668 669 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) { 670 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 671 672 asus->wlan_led.name = "asus::wlan"; 673 asus->wlan_led.brightness_set = wlan_led_set; 674 if (!wlan_led_unknown_state(asus)) 675 asus->wlan_led.brightness_get = wlan_led_get; 676 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 677 asus->wlan_led.max_brightness = 1; 678 asus->wlan_led.default_trigger = "asus-wlan"; 679 680 rv = led_classdev_register(&asus->platform_device->dev, 681 &asus->wlan_led); 682 if (rv) 683 goto error; 684 } 685 686 if (lightbar_led_presence(asus)) { 687 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); 688 689 asus->lightbar_led.name = "asus::lightbar"; 690 asus->lightbar_led.brightness_set = lightbar_led_set; 691 asus->lightbar_led.brightness_get = lightbar_led_get; 692 asus->lightbar_led.max_brightness = 1; 693 694 rv = led_classdev_register(&asus->platform_device->dev, 695 &asus->lightbar_led); 696 } 697 698 error: 699 if (rv) 700 asus_wmi_led_exit(asus); 701 702 return rv; 703 } 704 705 706 /* 707 * PCI hotplug (for wlan rfkill) 708 */ 709 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 710 { 711 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 712 713 if (result < 0) 714 return false; 715 return !result; 716 } 717 718 static void asus_rfkill_hotplug(struct asus_wmi *asus) 719 { 720 struct pci_dev *dev; 721 struct pci_bus *bus; 722 bool blocked; 723 bool absent; 724 u32 l; 725 726 mutex_lock(&asus->wmi_lock); 727 blocked = asus_wlan_rfkill_blocked(asus); 728 mutex_unlock(&asus->wmi_lock); 729 730 mutex_lock(&asus->hotplug_lock); 731 pci_lock_rescan_remove(); 732 733 if (asus->wlan.rfkill) 734 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 735 736 if (asus->hotplug_slot) { 737 bus = pci_find_bus(0, 1); 738 if (!bus) { 739 pr_warn("Unable to find PCI bus 1?\n"); 740 goto out_unlock; 741 } 742 743 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 744 pr_err("Unable to read PCI config space?\n"); 745 goto out_unlock; 746 } 747 absent = (l == 0xffffffff); 748 749 if (blocked != absent) { 750 pr_warn("BIOS says wireless lan is %s, " 751 "but the pci device is %s\n", 752 blocked ? "blocked" : "unblocked", 753 absent ? "absent" : "present"); 754 pr_warn("skipped wireless hotplug as probably " 755 "inappropriate for this model\n"); 756 goto out_unlock; 757 } 758 759 if (!blocked) { 760 dev = pci_get_slot(bus, 0); 761 if (dev) { 762 /* Device already present */ 763 pci_dev_put(dev); 764 goto out_unlock; 765 } 766 dev = pci_scan_single_device(bus, 0); 767 if (dev) { 768 pci_bus_assign_resources(bus); 769 pci_bus_add_device(dev); 770 } 771 } else { 772 dev = pci_get_slot(bus, 0); 773 if (dev) { 774 pci_stop_and_remove_bus_device(dev); 775 pci_dev_put(dev); 776 } 777 } 778 } 779 780 out_unlock: 781 pci_unlock_rescan_remove(); 782 mutex_unlock(&asus->hotplug_lock); 783 } 784 785 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 786 { 787 struct asus_wmi *asus = data; 788 789 if (event != ACPI_NOTIFY_BUS_CHECK) 790 return; 791 792 /* 793 * We can't call directly asus_rfkill_hotplug because most 794 * of the time WMBC is still being executed and not reetrant. 795 * There is currently no way to tell ACPICA that we want this 796 * method to be serialized, we schedule a asus_rfkill_hotplug 797 * call later, in a safer context. 798 */ 799 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 800 } 801 802 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 803 { 804 acpi_status status; 805 acpi_handle handle; 806 807 status = acpi_get_handle(NULL, node, &handle); 808 809 if (ACPI_SUCCESS(status)) { 810 status = acpi_install_notify_handler(handle, 811 ACPI_SYSTEM_NOTIFY, 812 asus_rfkill_notify, asus); 813 if (ACPI_FAILURE(status)) 814 pr_warn("Failed to register notify on %s\n", node); 815 } else 816 return -ENODEV; 817 818 return 0; 819 } 820 821 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 822 { 823 acpi_status status = AE_OK; 824 acpi_handle handle; 825 826 status = acpi_get_handle(NULL, node, &handle); 827 828 if (ACPI_SUCCESS(status)) { 829 status = acpi_remove_notify_handler(handle, 830 ACPI_SYSTEM_NOTIFY, 831 asus_rfkill_notify); 832 if (ACPI_FAILURE(status)) 833 pr_err("Error removing rfkill notify handler %s\n", 834 node); 835 } 836 } 837 838 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 839 u8 *value) 840 { 841 struct asus_wmi *asus = hotplug_slot->private; 842 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 843 844 if (result < 0) 845 return result; 846 847 *value = !!result; 848 return 0; 849 } 850 851 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 852 { 853 kfree(hotplug_slot->info); 854 kfree(hotplug_slot); 855 } 856 857 static struct hotplug_slot_ops asus_hotplug_slot_ops = { 858 .owner = THIS_MODULE, 859 .get_adapter_status = asus_get_adapter_status, 860 .get_power_status = asus_get_adapter_status, 861 }; 862 863 static void asus_hotplug_work(struct work_struct *work) 864 { 865 struct asus_wmi *asus; 866 867 asus = container_of(work, struct asus_wmi, hotplug_work); 868 asus_rfkill_hotplug(asus); 869 } 870 871 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 872 { 873 int ret = -ENOMEM; 874 struct pci_bus *bus = pci_find_bus(0, 1); 875 876 if (!bus) { 877 pr_err("Unable to find wifi PCI bus\n"); 878 return -ENODEV; 879 } 880 881 asus->hotplug_workqueue = 882 create_singlethread_workqueue("hotplug_workqueue"); 883 if (!asus->hotplug_workqueue) 884 goto error_workqueue; 885 886 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 887 888 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); 889 if (!asus->hotplug_slot) 890 goto error_slot; 891 892 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), 893 GFP_KERNEL); 894 if (!asus->hotplug_slot->info) 895 goto error_info; 896 897 asus->hotplug_slot->private = asus; 898 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug; 899 asus->hotplug_slot->ops = &asus_hotplug_slot_ops; 900 asus_get_adapter_status(asus->hotplug_slot, 901 &asus->hotplug_slot->info->adapter_status); 902 903 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi"); 904 if (ret) { 905 pr_err("Unable to register hotplug slot - %d\n", ret); 906 goto error_register; 907 } 908 909 return 0; 910 911 error_register: 912 kfree(asus->hotplug_slot->info); 913 error_info: 914 kfree(asus->hotplug_slot); 915 asus->hotplug_slot = NULL; 916 error_slot: 917 destroy_workqueue(asus->hotplug_workqueue); 918 error_workqueue: 919 return ret; 920 } 921 922 /* 923 * Rfkill devices 924 */ 925 static int asus_rfkill_set(void *data, bool blocked) 926 { 927 struct asus_rfkill *priv = data; 928 u32 ctrl_param = !blocked; 929 u32 dev_id = priv->dev_id; 930 931 /* 932 * If the user bit is set, BIOS can't set and record the wlan status, 933 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 934 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 935 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 936 * while setting the wlan status through WMI. 937 * This is also the behavior that windows app will do. 938 */ 939 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 940 priv->asus->driver->wlan_ctrl_by_user) 941 dev_id = ASUS_WMI_DEVID_WLAN_LED; 942 943 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 944 } 945 946 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 947 { 948 struct asus_rfkill *priv = data; 949 int result; 950 951 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 952 953 if (result < 0) 954 return; 955 956 rfkill_set_sw_state(priv->rfkill, !result); 957 } 958 959 static int asus_rfkill_wlan_set(void *data, bool blocked) 960 { 961 struct asus_rfkill *priv = data; 962 struct asus_wmi *asus = priv->asus; 963 int ret; 964 965 /* 966 * This handler is enabled only if hotplug is enabled. 967 * In this case, the asus_wmi_set_devstate() will 968 * trigger a wmi notification and we need to wait 969 * this call to finish before being able to call 970 * any wmi method 971 */ 972 mutex_lock(&asus->wmi_lock); 973 ret = asus_rfkill_set(data, blocked); 974 mutex_unlock(&asus->wmi_lock); 975 return ret; 976 } 977 978 static const struct rfkill_ops asus_rfkill_wlan_ops = { 979 .set_block = asus_rfkill_wlan_set, 980 .query = asus_rfkill_query, 981 }; 982 983 static const struct rfkill_ops asus_rfkill_ops = { 984 .set_block = asus_rfkill_set, 985 .query = asus_rfkill_query, 986 }; 987 988 static int asus_new_rfkill(struct asus_wmi *asus, 989 struct asus_rfkill *arfkill, 990 const char *name, enum rfkill_type type, int dev_id) 991 { 992 int result = asus_wmi_get_devstate_simple(asus, dev_id); 993 struct rfkill **rfkill = &arfkill->rfkill; 994 995 if (result < 0) 996 return result; 997 998 arfkill->dev_id = dev_id; 999 arfkill->asus = asus; 1000 1001 if (dev_id == ASUS_WMI_DEVID_WLAN && 1002 asus->driver->quirks->hotplug_wireless) 1003 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1004 &asus_rfkill_wlan_ops, arfkill); 1005 else 1006 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 1007 &asus_rfkill_ops, arfkill); 1008 1009 if (!*rfkill) 1010 return -EINVAL; 1011 1012 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 1013 (asus->driver->quirks->wapf > 0)) 1014 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 1015 1016 rfkill_init_sw_state(*rfkill, !result); 1017 result = rfkill_register(*rfkill); 1018 if (result) { 1019 rfkill_destroy(*rfkill); 1020 *rfkill = NULL; 1021 return result; 1022 } 1023 return 0; 1024 } 1025 1026 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 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) 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 (is_display_toggle(code) && 1749 asus->driver->quirks->no_display_toggle) 1750 goto exit; 1751 1752 if (!sparse_keymap_report_event(asus->inputdev, code, 1753 key_value, autorelease)) 1754 pr_info("Unknown key %x pressed\n", code); 1755 1756 exit: 1757 kfree(obj); 1758 } 1759 1760 /* 1761 * Sys helpers 1762 */ 1763 static int parse_arg(const char *buf, unsigned long count, int *val) 1764 { 1765 if (!count) 1766 return 0; 1767 if (sscanf(buf, "%i", val) != 1) 1768 return -EINVAL; 1769 return count; 1770 } 1771 1772 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1773 const char *buf, size_t count) 1774 { 1775 u32 retval; 1776 int rv, err, value; 1777 1778 value = asus_wmi_get_devstate_simple(asus, devid); 1779 if (value < 0) 1780 return value; 1781 1782 rv = parse_arg(buf, count, &value); 1783 err = asus_wmi_set_devstate(devid, value, &retval); 1784 1785 if (err < 0) 1786 return err; 1787 1788 return rv; 1789 } 1790 1791 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1792 { 1793 int value = asus_wmi_get_devstate_simple(asus, devid); 1794 1795 if (value < 0) 1796 return value; 1797 1798 return sprintf(buf, "%d\n", value); 1799 } 1800 1801 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1802 static ssize_t show_##_name(struct device *dev, \ 1803 struct device_attribute *attr, \ 1804 char *buf) \ 1805 { \ 1806 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1807 \ 1808 return show_sys_wmi(asus, _cm, buf); \ 1809 } \ 1810 static ssize_t store_##_name(struct device *dev, \ 1811 struct device_attribute *attr, \ 1812 const char *buf, size_t count) \ 1813 { \ 1814 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1815 \ 1816 return store_sys_wmi(asus, _cm, buf, count); \ 1817 } \ 1818 static struct device_attribute dev_attr_##_name = { \ 1819 .attr = { \ 1820 .name = __stringify(_name), \ 1821 .mode = _mode }, \ 1822 .show = show_##_name, \ 1823 .store = store_##_name, \ 1824 } 1825 1826 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1827 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1828 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1829 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1830 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 1831 1832 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr, 1833 const char *buf, size_t count) 1834 { 1835 int value, rv; 1836 1837 if (!count || sscanf(buf, "%i", &value) != 1) 1838 return -EINVAL; 1839 if (value < 0 || value > 2) 1840 return -EINVAL; 1841 1842 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1843 if (rv < 0) 1844 return rv; 1845 1846 return count; 1847 } 1848 1849 static DEVICE_ATTR_WO(cpufv); 1850 1851 static struct attribute *platform_attributes[] = { 1852 &dev_attr_cpufv.attr, 1853 &dev_attr_camera.attr, 1854 &dev_attr_cardr.attr, 1855 &dev_attr_touchpad.attr, 1856 &dev_attr_lid_resume.attr, 1857 &dev_attr_als_enable.attr, 1858 NULL 1859 }; 1860 1861 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1862 struct attribute *attr, int idx) 1863 { 1864 struct device *dev = container_of(kobj, struct device, kobj); 1865 struct platform_device *pdev = to_platform_device(dev); 1866 struct asus_wmi *asus = platform_get_drvdata(pdev); 1867 bool ok = true; 1868 int devid = -1; 1869 1870 if (attr == &dev_attr_camera.attr) 1871 devid = ASUS_WMI_DEVID_CAMERA; 1872 else if (attr == &dev_attr_cardr.attr) 1873 devid = ASUS_WMI_DEVID_CARDREADER; 1874 else if (attr == &dev_attr_touchpad.attr) 1875 devid = ASUS_WMI_DEVID_TOUCHPAD; 1876 else if (attr == &dev_attr_lid_resume.attr) 1877 devid = ASUS_WMI_DEVID_LID_RESUME; 1878 else if (attr == &dev_attr_als_enable.attr) 1879 devid = ASUS_WMI_DEVID_ALS_ENABLE; 1880 1881 if (devid != -1) 1882 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1883 1884 return ok ? attr->mode : 0; 1885 } 1886 1887 static const struct attribute_group platform_attribute_group = { 1888 .is_visible = asus_sysfs_is_visible, 1889 .attrs = platform_attributes 1890 }; 1891 1892 static void asus_wmi_sysfs_exit(struct platform_device *device) 1893 { 1894 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1895 } 1896 1897 static int asus_wmi_sysfs_init(struct platform_device *device) 1898 { 1899 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1900 } 1901 1902 /* 1903 * Platform device 1904 */ 1905 static int asus_wmi_platform_init(struct asus_wmi *asus) 1906 { 1907 int rv; 1908 1909 /* INIT enable hotkeys on some models */ 1910 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1911 pr_info("Initialization: %#x\n", rv); 1912 1913 /* We don't know yet what to do with this version... */ 1914 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1915 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 1916 asus->spec = rv; 1917 } 1918 1919 /* 1920 * The SFUN method probably allows the original driver to get the list 1921 * of features supported by a given model. For now, 0x0100 or 0x0800 1922 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1923 * The significance of others is yet to be found. 1924 */ 1925 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1926 pr_info("SFUN value: %#x\n", rv); 1927 asus->sfun = rv; 1928 } 1929 1930 /* 1931 * Eee PC and Notebooks seems to have different method_id for DSTS, 1932 * but it may also be related to the BIOS's SPEC. 1933 * Note, on most Eeepc, there is no way to check if a method exist 1934 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1935 * but once again, SPEC may probably be used for that kind of things. 1936 */ 1937 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1938 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1939 else 1940 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1941 1942 /* CWAP allow to define the behavior of the Fn+F2 key, 1943 * this method doesn't seems to be present on Eee PCs */ 1944 if (asus->driver->quirks->wapf >= 0) 1945 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1946 asus->driver->quirks->wapf, NULL); 1947 1948 return asus_wmi_sysfs_init(asus->platform_device); 1949 } 1950 1951 static void asus_wmi_platform_exit(struct asus_wmi *asus) 1952 { 1953 asus_wmi_sysfs_exit(asus->platform_device); 1954 } 1955 1956 /* 1957 * debugfs 1958 */ 1959 struct asus_wmi_debugfs_node { 1960 struct asus_wmi *asus; 1961 char *name; 1962 int (*show) (struct seq_file *m, void *data); 1963 }; 1964 1965 static int show_dsts(struct seq_file *m, void *data) 1966 { 1967 struct asus_wmi *asus = m->private; 1968 int err; 1969 u32 retval = -1; 1970 1971 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1972 1973 if (err < 0) 1974 return err; 1975 1976 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1977 1978 return 0; 1979 } 1980 1981 static int show_devs(struct seq_file *m, void *data) 1982 { 1983 struct asus_wmi *asus = m->private; 1984 int err; 1985 u32 retval = -1; 1986 1987 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 1988 &retval); 1989 1990 if (err < 0) 1991 return err; 1992 1993 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 1994 asus->debug.ctrl_param, retval); 1995 1996 return 0; 1997 } 1998 1999 static int show_call(struct seq_file *m, void *data) 2000 { 2001 struct asus_wmi *asus = m->private; 2002 struct bios_args args = { 2003 .arg0 = asus->debug.dev_id, 2004 .arg1 = asus->debug.ctrl_param, 2005 }; 2006 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 2007 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 2008 union acpi_object *obj; 2009 acpi_status status; 2010 2011 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 2012 0, asus->debug.method_id, 2013 &input, &output); 2014 2015 if (ACPI_FAILURE(status)) 2016 return -EIO; 2017 2018 obj = (union acpi_object *)output.pointer; 2019 if (obj && obj->type == ACPI_TYPE_INTEGER) 2020 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 2021 asus->debug.dev_id, asus->debug.ctrl_param, 2022 (u32) obj->integer.value); 2023 else 2024 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 2025 asus->debug.dev_id, asus->debug.ctrl_param, 2026 obj ? obj->type : -1); 2027 2028 kfree(obj); 2029 2030 return 0; 2031 } 2032 2033 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 2034 {NULL, "devs", show_devs}, 2035 {NULL, "dsts", show_dsts}, 2036 {NULL, "call", show_call}, 2037 }; 2038 2039 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 2040 { 2041 struct asus_wmi_debugfs_node *node = inode->i_private; 2042 2043 return single_open(file, node->show, node->asus); 2044 } 2045 2046 static const struct file_operations asus_wmi_debugfs_io_ops = { 2047 .owner = THIS_MODULE, 2048 .open = asus_wmi_debugfs_open, 2049 .read = seq_read, 2050 .llseek = seq_lseek, 2051 .release = single_release, 2052 }; 2053 2054 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 2055 { 2056 debugfs_remove_recursive(asus->debug.root); 2057 } 2058 2059 static int asus_wmi_debugfs_init(struct asus_wmi *asus) 2060 { 2061 struct dentry *dent; 2062 int i; 2063 2064 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 2065 if (!asus->debug.root) { 2066 pr_err("failed to create debugfs directory\n"); 2067 goto error_debugfs; 2068 } 2069 2070 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 2071 asus->debug.root, &asus->debug.method_id); 2072 if (!dent) 2073 goto error_debugfs; 2074 2075 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 2076 asus->debug.root, &asus->debug.dev_id); 2077 if (!dent) 2078 goto error_debugfs; 2079 2080 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 2081 asus->debug.root, &asus->debug.ctrl_param); 2082 if (!dent) 2083 goto error_debugfs; 2084 2085 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2086 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2087 2088 node->asus = asus; 2089 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2090 asus->debug.root, node, 2091 &asus_wmi_debugfs_io_ops); 2092 if (!dent) { 2093 pr_err("failed to create debug file: %s\n", node->name); 2094 goto error_debugfs; 2095 } 2096 } 2097 2098 return 0; 2099 2100 error_debugfs: 2101 asus_wmi_debugfs_exit(asus); 2102 return -ENOMEM; 2103 } 2104 2105 static int asus_wmi_fan_init(struct asus_wmi *asus) 2106 { 2107 int status; 2108 2109 asus->asus_hwmon_pwm = -1; 2110 asus->asus_hwmon_num_fans = -1; 2111 asus->asus_hwmon_fan_manual_mode = false; 2112 2113 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans); 2114 if (status) { 2115 asus->asus_hwmon_num_fans = 0; 2116 pr_warn("Could not determine number of fans: %d\n", status); 2117 return -ENXIO; 2118 } 2119 2120 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans); 2121 return 0; 2122 } 2123 2124 static bool ashs_present(void) 2125 { 2126 int i = 0; 2127 while (ashs_ids[i]) { 2128 if (acpi_dev_found(ashs_ids[i++])) 2129 return true; 2130 } 2131 return false; 2132 } 2133 2134 /* 2135 * WMI Driver 2136 */ 2137 static int asus_wmi_add(struct platform_device *pdev) 2138 { 2139 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2140 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2141 struct asus_wmi *asus; 2142 const char *chassis_type; 2143 acpi_status status; 2144 int err; 2145 u32 result; 2146 2147 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2148 if (!asus) 2149 return -ENOMEM; 2150 2151 asus->driver = wdrv; 2152 asus->platform_device = pdev; 2153 wdrv->platform_device = pdev; 2154 platform_set_drvdata(asus->platform_device, asus); 2155 2156 if (wdrv->detect_quirks) 2157 wdrv->detect_quirks(asus->driver); 2158 2159 err = asus_wmi_platform_init(asus); 2160 if (err) 2161 goto fail_platform; 2162 2163 err = asus_wmi_input_init(asus); 2164 if (err) 2165 goto fail_input; 2166 2167 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2168 asus_hwmon_fan_set_auto(asus); 2169 2170 err = asus_wmi_hwmon_init(asus); 2171 if (err) 2172 goto fail_hwmon; 2173 2174 err = asus_wmi_led_init(asus); 2175 if (err) 2176 goto fail_leds; 2177 2178 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2179 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2180 asus->driver->wlan_ctrl_by_user = 1; 2181 2182 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2183 err = asus_wmi_rfkill_init(asus); 2184 if (err) 2185 goto fail_rfkill; 2186 } 2187 2188 if (asus->driver->quirks->wmi_force_als_set) 2189 asus_wmi_set_als(); 2190 2191 /* Some Asus desktop boards export an acpi-video backlight interface, 2192 stop this from showing up */ 2193 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2194 if (chassis_type && !strcmp(chassis_type, "3")) 2195 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2196 2197 if (asus->driver->quirks->wmi_backlight_power) 2198 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2199 2200 if (asus->driver->quirks->wmi_backlight_native) 2201 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2202 2203 if (asus->driver->quirks->xusb2pr) 2204 asus_wmi_set_xusb2pr(asus); 2205 2206 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2207 err = asus_wmi_backlight_init(asus); 2208 if (err && err != -ENODEV) 2209 goto fail_backlight; 2210 } 2211 2212 status = wmi_install_notify_handler(asus->driver->event_guid, 2213 asus_wmi_notify, asus); 2214 if (ACPI_FAILURE(status)) { 2215 pr_err("Unable to register notify handler - %d\n", status); 2216 err = -ENODEV; 2217 goto fail_wmi_handler; 2218 } 2219 2220 err = asus_wmi_debugfs_init(asus); 2221 if (err) 2222 goto fail_debugfs; 2223 2224 return 0; 2225 2226 fail_debugfs: 2227 wmi_remove_notify_handler(asus->driver->event_guid); 2228 fail_wmi_handler: 2229 asus_wmi_backlight_exit(asus); 2230 fail_backlight: 2231 asus_wmi_rfkill_exit(asus); 2232 fail_rfkill: 2233 asus_wmi_led_exit(asus); 2234 fail_leds: 2235 fail_hwmon: 2236 asus_wmi_input_exit(asus); 2237 fail_input: 2238 asus_wmi_platform_exit(asus); 2239 fail_platform: 2240 kfree(asus); 2241 return err; 2242 } 2243 2244 static int asus_wmi_remove(struct platform_device *device) 2245 { 2246 struct asus_wmi *asus; 2247 2248 asus = platform_get_drvdata(device); 2249 wmi_remove_notify_handler(asus->driver->event_guid); 2250 asus_wmi_backlight_exit(asus); 2251 asus_wmi_input_exit(asus); 2252 asus_wmi_led_exit(asus); 2253 asus_wmi_rfkill_exit(asus); 2254 asus_wmi_debugfs_exit(asus); 2255 asus_wmi_platform_exit(asus); 2256 asus_hwmon_fan_set_auto(asus); 2257 2258 kfree(asus); 2259 return 0; 2260 } 2261 2262 /* 2263 * Platform driver - hibernate/resume callbacks 2264 */ 2265 static int asus_hotk_thaw(struct device *device) 2266 { 2267 struct asus_wmi *asus = dev_get_drvdata(device); 2268 2269 if (asus->wlan.rfkill) { 2270 bool wlan; 2271 2272 /* 2273 * Work around bios bug - acpi _PTS turns off the wireless led 2274 * during suspend. Normally it restores it on resume, but 2275 * we should kick it ourselves in case hibernation is aborted. 2276 */ 2277 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2278 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2279 } 2280 2281 return 0; 2282 } 2283 2284 static int asus_hotk_resume(struct device *device) 2285 { 2286 struct asus_wmi *asus = dev_get_drvdata(device); 2287 2288 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2289 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2290 2291 return 0; 2292 } 2293 2294 static int asus_hotk_restore(struct device *device) 2295 { 2296 struct asus_wmi *asus = dev_get_drvdata(device); 2297 int bl; 2298 2299 /* Refresh both wlan rfkill state and pci hotplug */ 2300 if (asus->wlan.rfkill) 2301 asus_rfkill_hotplug(asus); 2302 2303 if (asus->bluetooth.rfkill) { 2304 bl = !asus_wmi_get_devstate_simple(asus, 2305 ASUS_WMI_DEVID_BLUETOOTH); 2306 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2307 } 2308 if (asus->wimax.rfkill) { 2309 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2310 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2311 } 2312 if (asus->wwan3g.rfkill) { 2313 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2314 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2315 } 2316 if (asus->gps.rfkill) { 2317 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2318 rfkill_set_sw_state(asus->gps.rfkill, bl); 2319 } 2320 if (asus->uwb.rfkill) { 2321 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2322 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2323 } 2324 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2325 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2326 2327 return 0; 2328 } 2329 2330 static const struct dev_pm_ops asus_pm_ops = { 2331 .thaw = asus_hotk_thaw, 2332 .restore = asus_hotk_restore, 2333 .resume = asus_hotk_resume, 2334 }; 2335 2336 static int asus_wmi_probe(struct platform_device *pdev) 2337 { 2338 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2339 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2340 int ret; 2341 2342 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2343 pr_warn("Management GUID not found\n"); 2344 return -ENODEV; 2345 } 2346 2347 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2348 pr_warn("Event GUID not found\n"); 2349 return -ENODEV; 2350 } 2351 2352 if (wdrv->probe) { 2353 ret = wdrv->probe(pdev); 2354 if (ret) 2355 return ret; 2356 } 2357 2358 return asus_wmi_add(pdev); 2359 } 2360 2361 static bool used; 2362 2363 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2364 { 2365 struct platform_driver *platform_driver; 2366 struct platform_device *platform_device; 2367 2368 if (used) 2369 return -EBUSY; 2370 2371 platform_driver = &driver->platform_driver; 2372 platform_driver->remove = asus_wmi_remove; 2373 platform_driver->driver.owner = driver->owner; 2374 platform_driver->driver.name = driver->name; 2375 platform_driver->driver.pm = &asus_pm_ops; 2376 2377 platform_device = platform_create_bundle(platform_driver, 2378 asus_wmi_probe, 2379 NULL, 0, NULL, 0); 2380 if (IS_ERR(platform_device)) 2381 return PTR_ERR(platform_device); 2382 2383 used = true; 2384 return 0; 2385 } 2386 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2387 2388 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2389 { 2390 platform_device_unregister(driver->platform_device); 2391 platform_driver_unregister(&driver->platform_driver); 2392 used = false; 2393 } 2394 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2395 2396 static int __init asus_wmi_init(void) 2397 { 2398 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2399 pr_info("Asus Management GUID not found\n"); 2400 return -ENODEV; 2401 } 2402 2403 pr_info("ASUS WMI generic driver loaded\n"); 2404 return 0; 2405 } 2406 2407 static void __exit asus_wmi_exit(void) 2408 { 2409 pr_info("ASUS WMI generic driver unloaded\n"); 2410 } 2411 2412 module_init(asus_wmi_init); 2413 module_exit(asus_wmi_exit); 2414