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 /* ?? */ 122 123 /* Misc */ 124 #define ASUS_WMI_DEVID_CAMERA 0x00060013 125 126 /* Storage */ 127 #define ASUS_WMI_DEVID_CARDREADER 0x00080013 128 129 /* Input */ 130 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 131 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 132 133 /* Fan, Thermal */ 134 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 135 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 136 137 /* Power */ 138 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 139 140 /* Deep S3 / Resume on LID open */ 141 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031 142 143 /* DSTS masks */ 144 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 145 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 146 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 147 #define ASUS_WMI_DSTS_USER_BIT 0x00020000 148 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 149 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF 150 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 151 152 #define ASUS_FAN_DESC "cpu_fan" 153 #define ASUS_FAN_MFUN 0x13 154 #define ASUS_FAN_SFUN_READ 0x06 155 #define ASUS_FAN_SFUN_WRITE 0x07 156 #define ASUS_FAN_CTRL_MANUAL 1 157 #define ASUS_FAN_CTRL_AUTO 2 158 159 #define USB_INTEL_XUSB2PR 0xD0 160 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 161 162 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL }; 163 164 struct bios_args { 165 u32 arg0; 166 u32 arg1; 167 } __packed; 168 169 /* 170 * Struct that's used for all methods called via AGFN. Naming is 171 * identically to the AML code. 172 */ 173 struct agfn_args { 174 u16 mfun; /* probably "Multi-function" to be called */ 175 u16 sfun; /* probably "Sub-function" to be called */ 176 u16 len; /* size of the hole struct, including subfunction fields */ 177 u8 stas; /* not used by now */ 178 u8 err; /* zero on success */ 179 } __packed; 180 181 /* struct used for calling fan read and write methods */ 182 struct fan_args { 183 struct agfn_args agfn; /* common fields */ 184 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */ 185 u32 speed; /* read: RPM/100 - write: 0-255 */ 186 } __packed; 187 188 /* 189 * <platform>/ - debugfs root directory 190 * dev_id - current dev_id 191 * ctrl_param - current ctrl_param 192 * method_id - current method_id 193 * devs - call DEVS(dev_id, ctrl_param) and print result 194 * dsts - call DSTS(dev_id) and print result 195 * call - call method_id(dev_id, ctrl_param) and print result 196 */ 197 struct asus_wmi_debug { 198 struct dentry *root; 199 u32 method_id; 200 u32 dev_id; 201 u32 ctrl_param; 202 }; 203 204 struct asus_rfkill { 205 struct asus_wmi *asus; 206 struct rfkill *rfkill; 207 u32 dev_id; 208 }; 209 210 struct asus_wmi { 211 int dsts_id; 212 int spec; 213 int sfun; 214 215 struct input_dev *inputdev; 216 struct backlight_device *backlight_device; 217 struct platform_device *platform_device; 218 219 struct led_classdev wlan_led; 220 int wlan_led_wk; 221 struct led_classdev tpd_led; 222 int tpd_led_wk; 223 struct led_classdev kbd_led; 224 int kbd_led_wk; 225 struct workqueue_struct *led_workqueue; 226 struct work_struct tpd_led_work; 227 struct work_struct kbd_led_work; 228 struct work_struct wlan_led_work; 229 230 struct asus_rfkill wlan; 231 struct asus_rfkill bluetooth; 232 struct asus_rfkill wimax; 233 struct asus_rfkill wwan3g; 234 struct asus_rfkill gps; 235 struct asus_rfkill uwb; 236 237 bool asus_hwmon_fan_manual_mode; 238 int asus_hwmon_num_fans; 239 int asus_hwmon_pwm; 240 241 struct hotplug_slot *hotplug_slot; 242 struct mutex hotplug_lock; 243 struct mutex wmi_lock; 244 struct workqueue_struct *hotplug_workqueue; 245 struct work_struct hotplug_work; 246 247 struct asus_wmi_debug debug; 248 249 struct asus_wmi_driver *driver; 250 }; 251 252 static int asus_wmi_input_init(struct asus_wmi *asus) 253 { 254 int err; 255 256 asus->inputdev = input_allocate_device(); 257 if (!asus->inputdev) 258 return -ENOMEM; 259 260 asus->inputdev->name = asus->driver->input_name; 261 asus->inputdev->phys = asus->driver->input_phys; 262 asus->inputdev->id.bustype = BUS_HOST; 263 asus->inputdev->dev.parent = &asus->platform_device->dev; 264 set_bit(EV_REP, asus->inputdev->evbit); 265 266 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL); 267 if (err) 268 goto err_free_dev; 269 270 err = input_register_device(asus->inputdev); 271 if (err) 272 goto err_free_keymap; 273 274 return 0; 275 276 err_free_keymap: 277 sparse_keymap_free(asus->inputdev); 278 err_free_dev: 279 input_free_device(asus->inputdev); 280 return err; 281 } 282 283 static void asus_wmi_input_exit(struct asus_wmi *asus) 284 { 285 if (asus->inputdev) { 286 sparse_keymap_free(asus->inputdev); 287 input_unregister_device(asus->inputdev); 288 } 289 290 asus->inputdev = NULL; 291 } 292 293 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, 294 u32 *retval) 295 { 296 struct bios_args args = { 297 .arg0 = arg0, 298 .arg1 = arg1, 299 }; 300 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 301 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 302 acpi_status status; 303 union acpi_object *obj; 304 u32 tmp = 0; 305 306 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id, 307 &input, &output); 308 309 if (ACPI_FAILURE(status)) 310 goto exit; 311 312 obj = (union acpi_object *)output.pointer; 313 if (obj && obj->type == ACPI_TYPE_INTEGER) 314 tmp = (u32) obj->integer.value; 315 316 if (retval) 317 *retval = tmp; 318 319 kfree(obj); 320 321 exit: 322 if (ACPI_FAILURE(status)) 323 return -EIO; 324 325 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD) 326 return -ENODEV; 327 328 return 0; 329 } 330 331 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) 332 { 333 struct acpi_buffer input; 334 u64 phys_addr; 335 u32 retval; 336 u32 status = -1; 337 338 /* 339 * Copy to dma capable address otherwise memory corruption occurs as 340 * bios has to be able to access it. 341 */ 342 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL); 343 input.length = args.length; 344 if (!input.pointer) 345 return -ENOMEM; 346 phys_addr = virt_to_phys(input.pointer); 347 memcpy(input.pointer, args.pointer, args.length); 348 349 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN, 350 phys_addr, 0, &retval); 351 if (!status) 352 memcpy(args.pointer, input.pointer, args.length); 353 354 kfree(input.pointer); 355 if (status) 356 return -ENXIO; 357 358 return retval; 359 } 360 361 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval) 362 { 363 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval); 364 } 365 366 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, 367 u32 *retval) 368 { 369 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, 370 ctrl_param, retval); 371 } 372 373 /* Helper for special devices with magic return codes */ 374 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, 375 u32 dev_id, u32 mask) 376 { 377 u32 retval = 0; 378 int err; 379 380 err = asus_wmi_get_devstate(asus, dev_id, &retval); 381 382 if (err < 0) 383 return err; 384 385 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT)) 386 return -ENODEV; 387 388 if (mask == ASUS_WMI_DSTS_STATUS_BIT) { 389 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT) 390 return -ENODEV; 391 } 392 393 return retval & mask; 394 } 395 396 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id) 397 { 398 return asus_wmi_get_devstate_bits(asus, dev_id, 399 ASUS_WMI_DSTS_STATUS_BIT); 400 } 401 402 /* 403 * LEDs 404 */ 405 /* 406 * These functions actually update the LED's, and are called from a 407 * workqueue. By doing this as separate work rather than when the LED 408 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 409 * potentially bad time, such as a timer interrupt. 410 */ 411 static void tpd_led_update(struct work_struct *work) 412 { 413 int ctrl_param; 414 struct asus_wmi *asus; 415 416 asus = container_of(work, struct asus_wmi, tpd_led_work); 417 418 ctrl_param = asus->tpd_led_wk; 419 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); 420 } 421 422 static void tpd_led_set(struct led_classdev *led_cdev, 423 enum led_brightness value) 424 { 425 struct asus_wmi *asus; 426 427 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 428 429 asus->tpd_led_wk = !!value; 430 queue_work(asus->led_workqueue, &asus->tpd_led_work); 431 } 432 433 static int read_tpd_led_state(struct asus_wmi *asus) 434 { 435 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED); 436 } 437 438 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) 439 { 440 struct asus_wmi *asus; 441 442 asus = container_of(led_cdev, struct asus_wmi, tpd_led); 443 444 return read_tpd_led_state(asus); 445 } 446 447 static void kbd_led_update(struct work_struct *work) 448 { 449 int ctrl_param = 0; 450 struct asus_wmi *asus; 451 452 asus = container_of(work, struct asus_wmi, kbd_led_work); 453 454 /* 455 * bits 0-2: level 456 * bit 7: light on/off 457 */ 458 if (asus->kbd_led_wk > 0) 459 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F); 460 461 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL); 462 } 463 464 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env) 465 { 466 int retval; 467 468 /* 469 * bits 0-2: level 470 * bit 7: light on/off 471 * bit 8-10: environment (0: dark, 1: normal, 2: light) 472 * bit 17: status unknown 473 */ 474 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT, 475 0xFFFF); 476 477 /* Unknown status is considered as off */ 478 if (retval == 0x8000) 479 retval = 0; 480 481 if (retval >= 0) { 482 if (level) 483 *level = retval & 0x7F; 484 if (env) 485 *env = (retval >> 8) & 0x7F; 486 retval = 0; 487 } 488 489 return retval; 490 } 491 492 static void kbd_led_set(struct led_classdev *led_cdev, 493 enum led_brightness value) 494 { 495 struct asus_wmi *asus; 496 497 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 498 499 if (value > asus->kbd_led.max_brightness) 500 value = asus->kbd_led.max_brightness; 501 else if (value < 0) 502 value = 0; 503 504 asus->kbd_led_wk = value; 505 queue_work(asus->led_workqueue, &asus->kbd_led_work); 506 } 507 508 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) 509 { 510 struct asus_wmi *asus; 511 int retval, value; 512 513 asus = container_of(led_cdev, struct asus_wmi, kbd_led); 514 515 retval = kbd_led_read(asus, &value, NULL); 516 517 if (retval < 0) 518 return retval; 519 520 return value; 521 } 522 523 static int wlan_led_unknown_state(struct asus_wmi *asus) 524 { 525 u32 result; 526 527 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 528 529 return result & ASUS_WMI_DSTS_UNKNOWN_BIT; 530 } 531 532 static int wlan_led_presence(struct asus_wmi *asus) 533 { 534 u32 result; 535 536 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 537 538 return result & ASUS_WMI_DSTS_PRESENCE_BIT; 539 } 540 541 static void wlan_led_update(struct work_struct *work) 542 { 543 int ctrl_param; 544 struct asus_wmi *asus; 545 546 asus = container_of(work, struct asus_wmi, wlan_led_work); 547 548 ctrl_param = asus->wlan_led_wk; 549 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL); 550 } 551 552 static void wlan_led_set(struct led_classdev *led_cdev, 553 enum led_brightness value) 554 { 555 struct asus_wmi *asus; 556 557 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 558 559 asus->wlan_led_wk = !!value; 560 queue_work(asus->led_workqueue, &asus->wlan_led_work); 561 } 562 563 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) 564 { 565 struct asus_wmi *asus; 566 u32 result; 567 568 asus = container_of(led_cdev, struct asus_wmi, wlan_led); 569 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result); 570 571 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 572 } 573 574 static void asus_wmi_led_exit(struct asus_wmi *asus) 575 { 576 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 577 led_classdev_unregister(&asus->kbd_led); 578 if (!IS_ERR_OR_NULL(asus->tpd_led.dev)) 579 led_classdev_unregister(&asus->tpd_led); 580 if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) 581 led_classdev_unregister(&asus->wlan_led); 582 if (asus->led_workqueue) 583 destroy_workqueue(asus->led_workqueue); 584 } 585 586 static int asus_wmi_led_init(struct asus_wmi *asus) 587 { 588 int rv = 0, led_val; 589 590 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 591 if (!asus->led_workqueue) 592 return -ENOMEM; 593 594 if (read_tpd_led_state(asus) >= 0) { 595 INIT_WORK(&asus->tpd_led_work, tpd_led_update); 596 597 asus->tpd_led.name = "asus::touchpad"; 598 asus->tpd_led.brightness_set = tpd_led_set; 599 asus->tpd_led.brightness_get = tpd_led_get; 600 asus->tpd_led.max_brightness = 1; 601 602 rv = led_classdev_register(&asus->platform_device->dev, 603 &asus->tpd_led); 604 if (rv) 605 goto error; 606 } 607 608 led_val = kbd_led_read(asus, NULL, NULL); 609 if (led_val >= 0) { 610 INIT_WORK(&asus->kbd_led_work, kbd_led_update); 611 612 asus->kbd_led_wk = led_val; 613 asus->kbd_led.name = "asus::kbd_backlight"; 614 asus->kbd_led.brightness_set = kbd_led_set; 615 asus->kbd_led.brightness_get = kbd_led_get; 616 asus->kbd_led.max_brightness = 3; 617 618 rv = led_classdev_register(&asus->platform_device->dev, 619 &asus->kbd_led); 620 if (rv) 621 goto error; 622 } 623 624 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) { 625 INIT_WORK(&asus->wlan_led_work, wlan_led_update); 626 627 asus->wlan_led.name = "asus::wlan"; 628 asus->wlan_led.brightness_set = wlan_led_set; 629 if (!wlan_led_unknown_state(asus)) 630 asus->wlan_led.brightness_get = wlan_led_get; 631 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME; 632 asus->wlan_led.max_brightness = 1; 633 asus->wlan_led.default_trigger = "asus-wlan"; 634 635 rv = led_classdev_register(&asus->platform_device->dev, 636 &asus->wlan_led); 637 } 638 639 error: 640 if (rv) 641 asus_wmi_led_exit(asus); 642 643 return rv; 644 } 645 646 647 /* 648 * PCI hotplug (for wlan rfkill) 649 */ 650 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus) 651 { 652 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 653 654 if (result < 0) 655 return false; 656 return !result; 657 } 658 659 static void asus_rfkill_hotplug(struct asus_wmi *asus) 660 { 661 struct pci_dev *dev; 662 struct pci_bus *bus; 663 bool blocked; 664 bool absent; 665 u32 l; 666 667 mutex_lock(&asus->wmi_lock); 668 blocked = asus_wlan_rfkill_blocked(asus); 669 mutex_unlock(&asus->wmi_lock); 670 671 mutex_lock(&asus->hotplug_lock); 672 pci_lock_rescan_remove(); 673 674 if (asus->wlan.rfkill) 675 rfkill_set_sw_state(asus->wlan.rfkill, blocked); 676 677 if (asus->hotplug_slot) { 678 bus = pci_find_bus(0, 1); 679 if (!bus) { 680 pr_warn("Unable to find PCI bus 1?\n"); 681 goto out_unlock; 682 } 683 684 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { 685 pr_err("Unable to read PCI config space?\n"); 686 goto out_unlock; 687 } 688 absent = (l == 0xffffffff); 689 690 if (blocked != absent) { 691 pr_warn("BIOS says wireless lan is %s, " 692 "but the pci device is %s\n", 693 blocked ? "blocked" : "unblocked", 694 absent ? "absent" : "present"); 695 pr_warn("skipped wireless hotplug as probably " 696 "inappropriate for this model\n"); 697 goto out_unlock; 698 } 699 700 if (!blocked) { 701 dev = pci_get_slot(bus, 0); 702 if (dev) { 703 /* Device already present */ 704 pci_dev_put(dev); 705 goto out_unlock; 706 } 707 dev = pci_scan_single_device(bus, 0); 708 if (dev) { 709 pci_bus_assign_resources(bus); 710 pci_bus_add_device(dev); 711 } 712 } else { 713 dev = pci_get_slot(bus, 0); 714 if (dev) { 715 pci_stop_and_remove_bus_device(dev); 716 pci_dev_put(dev); 717 } 718 } 719 } 720 721 out_unlock: 722 pci_unlock_rescan_remove(); 723 mutex_unlock(&asus->hotplug_lock); 724 } 725 726 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data) 727 { 728 struct asus_wmi *asus = data; 729 730 if (event != ACPI_NOTIFY_BUS_CHECK) 731 return; 732 733 /* 734 * We can't call directly asus_rfkill_hotplug because most 735 * of the time WMBC is still being executed and not reetrant. 736 * There is currently no way to tell ACPICA that we want this 737 * method to be serialized, we schedule a asus_rfkill_hotplug 738 * call later, in a safer context. 739 */ 740 queue_work(asus->hotplug_workqueue, &asus->hotplug_work); 741 } 742 743 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node) 744 { 745 acpi_status status; 746 acpi_handle handle; 747 748 status = acpi_get_handle(NULL, node, &handle); 749 750 if (ACPI_SUCCESS(status)) { 751 status = acpi_install_notify_handler(handle, 752 ACPI_SYSTEM_NOTIFY, 753 asus_rfkill_notify, asus); 754 if (ACPI_FAILURE(status)) 755 pr_warn("Failed to register notify on %s\n", node); 756 } else 757 return -ENODEV; 758 759 return 0; 760 } 761 762 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node) 763 { 764 acpi_status status = AE_OK; 765 acpi_handle handle; 766 767 status = acpi_get_handle(NULL, node, &handle); 768 769 if (ACPI_SUCCESS(status)) { 770 status = acpi_remove_notify_handler(handle, 771 ACPI_SYSTEM_NOTIFY, 772 asus_rfkill_notify); 773 if (ACPI_FAILURE(status)) 774 pr_err("Error removing rfkill notify handler %s\n", 775 node); 776 } 777 } 778 779 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot, 780 u8 *value) 781 { 782 struct asus_wmi *asus = hotplug_slot->private; 783 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 784 785 if (result < 0) 786 return result; 787 788 *value = !!result; 789 return 0; 790 } 791 792 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) 793 { 794 kfree(hotplug_slot->info); 795 kfree(hotplug_slot); 796 } 797 798 static struct hotplug_slot_ops asus_hotplug_slot_ops = { 799 .owner = THIS_MODULE, 800 .get_adapter_status = asus_get_adapter_status, 801 .get_power_status = asus_get_adapter_status, 802 }; 803 804 static void asus_hotplug_work(struct work_struct *work) 805 { 806 struct asus_wmi *asus; 807 808 asus = container_of(work, struct asus_wmi, hotplug_work); 809 asus_rfkill_hotplug(asus); 810 } 811 812 static int asus_setup_pci_hotplug(struct asus_wmi *asus) 813 { 814 int ret = -ENOMEM; 815 struct pci_bus *bus = pci_find_bus(0, 1); 816 817 if (!bus) { 818 pr_err("Unable to find wifi PCI bus\n"); 819 return -ENODEV; 820 } 821 822 asus->hotplug_workqueue = 823 create_singlethread_workqueue("hotplug_workqueue"); 824 if (!asus->hotplug_workqueue) 825 goto error_workqueue; 826 827 INIT_WORK(&asus->hotplug_work, asus_hotplug_work); 828 829 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); 830 if (!asus->hotplug_slot) 831 goto error_slot; 832 833 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), 834 GFP_KERNEL); 835 if (!asus->hotplug_slot->info) 836 goto error_info; 837 838 asus->hotplug_slot->private = asus; 839 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug; 840 asus->hotplug_slot->ops = &asus_hotplug_slot_ops; 841 asus_get_adapter_status(asus->hotplug_slot, 842 &asus->hotplug_slot->info->adapter_status); 843 844 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi"); 845 if (ret) { 846 pr_err("Unable to register hotplug slot - %d\n", ret); 847 goto error_register; 848 } 849 850 return 0; 851 852 error_register: 853 kfree(asus->hotplug_slot->info); 854 error_info: 855 kfree(asus->hotplug_slot); 856 asus->hotplug_slot = NULL; 857 error_slot: 858 destroy_workqueue(asus->hotplug_workqueue); 859 error_workqueue: 860 return ret; 861 } 862 863 /* 864 * Rfkill devices 865 */ 866 static int asus_rfkill_set(void *data, bool blocked) 867 { 868 struct asus_rfkill *priv = data; 869 u32 ctrl_param = !blocked; 870 u32 dev_id = priv->dev_id; 871 872 /* 873 * If the user bit is set, BIOS can't set and record the wlan status, 874 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED 875 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN). 876 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED 877 * while setting the wlan status through WMI. 878 * This is also the behavior that windows app will do. 879 */ 880 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 881 priv->asus->driver->wlan_ctrl_by_user) 882 dev_id = ASUS_WMI_DEVID_WLAN_LED; 883 884 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL); 885 } 886 887 static void asus_rfkill_query(struct rfkill *rfkill, void *data) 888 { 889 struct asus_rfkill *priv = data; 890 int result; 891 892 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id); 893 894 if (result < 0) 895 return; 896 897 rfkill_set_sw_state(priv->rfkill, !result); 898 } 899 900 static int asus_rfkill_wlan_set(void *data, bool blocked) 901 { 902 struct asus_rfkill *priv = data; 903 struct asus_wmi *asus = priv->asus; 904 int ret; 905 906 /* 907 * This handler is enabled only if hotplug is enabled. 908 * In this case, the asus_wmi_set_devstate() will 909 * trigger a wmi notification and we need to wait 910 * this call to finish before being able to call 911 * any wmi method 912 */ 913 mutex_lock(&asus->wmi_lock); 914 ret = asus_rfkill_set(data, blocked); 915 mutex_unlock(&asus->wmi_lock); 916 return ret; 917 } 918 919 static const struct rfkill_ops asus_rfkill_wlan_ops = { 920 .set_block = asus_rfkill_wlan_set, 921 .query = asus_rfkill_query, 922 }; 923 924 static const struct rfkill_ops asus_rfkill_ops = { 925 .set_block = asus_rfkill_set, 926 .query = asus_rfkill_query, 927 }; 928 929 static int asus_new_rfkill(struct asus_wmi *asus, 930 struct asus_rfkill *arfkill, 931 const char *name, enum rfkill_type type, int dev_id) 932 { 933 int result = asus_wmi_get_devstate_simple(asus, dev_id); 934 struct rfkill **rfkill = &arfkill->rfkill; 935 936 if (result < 0) 937 return result; 938 939 arfkill->dev_id = dev_id; 940 arfkill->asus = asus; 941 942 if (dev_id == ASUS_WMI_DEVID_WLAN && 943 asus->driver->quirks->hotplug_wireless) 944 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 945 &asus_rfkill_wlan_ops, arfkill); 946 else 947 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, 948 &asus_rfkill_ops, arfkill); 949 950 if (!*rfkill) 951 return -EINVAL; 952 953 if ((dev_id == ASUS_WMI_DEVID_WLAN) && 954 (asus->driver->quirks->wapf > 0)) 955 rfkill_set_led_trigger_name(*rfkill, "asus-wlan"); 956 957 rfkill_init_sw_state(*rfkill, !result); 958 result = rfkill_register(*rfkill); 959 if (result) { 960 rfkill_destroy(*rfkill); 961 *rfkill = NULL; 962 return result; 963 } 964 return 0; 965 } 966 967 static void asus_wmi_rfkill_exit(struct asus_wmi *asus) 968 { 969 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 970 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 971 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 972 if (asus->wlan.rfkill) { 973 rfkill_unregister(asus->wlan.rfkill); 974 rfkill_destroy(asus->wlan.rfkill); 975 asus->wlan.rfkill = NULL; 976 } 977 /* 978 * Refresh pci hotplug in case the rfkill state was changed after 979 * asus_unregister_rfkill_notifier() 980 */ 981 asus_rfkill_hotplug(asus); 982 if (asus->hotplug_slot) 983 pci_hp_deregister(asus->hotplug_slot); 984 if (asus->hotplug_workqueue) 985 destroy_workqueue(asus->hotplug_workqueue); 986 987 if (asus->bluetooth.rfkill) { 988 rfkill_unregister(asus->bluetooth.rfkill); 989 rfkill_destroy(asus->bluetooth.rfkill); 990 asus->bluetooth.rfkill = NULL; 991 } 992 if (asus->wimax.rfkill) { 993 rfkill_unregister(asus->wimax.rfkill); 994 rfkill_destroy(asus->wimax.rfkill); 995 asus->wimax.rfkill = NULL; 996 } 997 if (asus->wwan3g.rfkill) { 998 rfkill_unregister(asus->wwan3g.rfkill); 999 rfkill_destroy(asus->wwan3g.rfkill); 1000 asus->wwan3g.rfkill = NULL; 1001 } 1002 if (asus->gps.rfkill) { 1003 rfkill_unregister(asus->gps.rfkill); 1004 rfkill_destroy(asus->gps.rfkill); 1005 asus->gps.rfkill = NULL; 1006 } 1007 if (asus->uwb.rfkill) { 1008 rfkill_unregister(asus->uwb.rfkill); 1009 rfkill_destroy(asus->uwb.rfkill); 1010 asus->uwb.rfkill = NULL; 1011 } 1012 } 1013 1014 static int asus_wmi_rfkill_init(struct asus_wmi *asus) 1015 { 1016 int result = 0; 1017 1018 mutex_init(&asus->hotplug_lock); 1019 mutex_init(&asus->wmi_lock); 1020 1021 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan", 1022 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN); 1023 1024 if (result && result != -ENODEV) 1025 goto exit; 1026 1027 result = asus_new_rfkill(asus, &asus->bluetooth, 1028 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH, 1029 ASUS_WMI_DEVID_BLUETOOTH); 1030 1031 if (result && result != -ENODEV) 1032 goto exit; 1033 1034 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax", 1035 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX); 1036 1037 if (result && result != -ENODEV) 1038 goto exit; 1039 1040 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g", 1041 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G); 1042 1043 if (result && result != -ENODEV) 1044 goto exit; 1045 1046 result = asus_new_rfkill(asus, &asus->gps, "asus-gps", 1047 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS); 1048 1049 if (result && result != -ENODEV) 1050 goto exit; 1051 1052 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb", 1053 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB); 1054 1055 if (result && result != -ENODEV) 1056 goto exit; 1057 1058 if (!asus->driver->quirks->hotplug_wireless) 1059 goto exit; 1060 1061 result = asus_setup_pci_hotplug(asus); 1062 /* 1063 * If we get -EBUSY then something else is handling the PCI hotplug - 1064 * don't fail in this case 1065 */ 1066 if (result == -EBUSY) 1067 result = 0; 1068 1069 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5"); 1070 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6"); 1071 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7"); 1072 /* 1073 * Refresh pci hotplug in case the rfkill state was changed during 1074 * setup. 1075 */ 1076 asus_rfkill_hotplug(asus); 1077 1078 exit: 1079 if (result && result != -ENODEV) 1080 asus_wmi_rfkill_exit(asus); 1081 1082 if (result == -ENODEV) 1083 result = 0; 1084 1085 return result; 1086 } 1087 1088 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus) 1089 { 1090 struct pci_dev *xhci_pdev; 1091 u32 orig_ports_available; 1092 u32 ports_available = asus->driver->quirks->xusb2pr; 1093 1094 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 1095 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI, 1096 NULL); 1097 1098 if (!xhci_pdev) 1099 return; 1100 1101 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1102 &orig_ports_available); 1103 1104 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 1105 cpu_to_le32(ports_available)); 1106 1107 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n", 1108 orig_ports_available, ports_available); 1109 } 1110 1111 /* 1112 * Hwmon device 1113 */ 1114 static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan, 1115 int *speed) 1116 { 1117 struct fan_args args = { 1118 .agfn.len = sizeof(args), 1119 .agfn.mfun = ASUS_FAN_MFUN, 1120 .agfn.sfun = ASUS_FAN_SFUN_READ, 1121 .fan = fan, 1122 .speed = 0, 1123 }; 1124 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1125 int status; 1126 1127 if (fan != 1) 1128 return -EINVAL; 1129 1130 status = asus_wmi_evaluate_method_agfn(input); 1131 1132 if (status || args.agfn.err) 1133 return -ENXIO; 1134 1135 if (speed) 1136 *speed = args.speed; 1137 1138 return 0; 1139 } 1140 1141 static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan, 1142 int *speed) 1143 { 1144 struct fan_args args = { 1145 .agfn.len = sizeof(args), 1146 .agfn.mfun = ASUS_FAN_MFUN, 1147 .agfn.sfun = ASUS_FAN_SFUN_WRITE, 1148 .fan = fan, 1149 .speed = speed ? *speed : 0, 1150 }; 1151 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1152 int status; 1153 1154 /* 1: for setting 1st fan's speed 0: setting auto mode */ 1155 if (fan != 1 && fan != 0) 1156 return -EINVAL; 1157 1158 status = asus_wmi_evaluate_method_agfn(input); 1159 1160 if (status || args.agfn.err) 1161 return -ENXIO; 1162 1163 if (speed && fan == 1) 1164 asus->asus_hwmon_pwm = *speed; 1165 1166 return 0; 1167 } 1168 1169 /* 1170 * Check if we can read the speed of one fan. If true we assume we can also 1171 * control it. 1172 */ 1173 static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans) 1174 { 1175 int status; 1176 int speed = 0; 1177 1178 *num_fans = 0; 1179 1180 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed); 1181 if (!status) 1182 *num_fans = 1; 1183 1184 return 0; 1185 } 1186 1187 static int asus_hwmon_fan_set_auto(struct asus_wmi *asus) 1188 { 1189 int status; 1190 1191 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL); 1192 if (status) 1193 return -ENXIO; 1194 1195 asus->asus_hwmon_fan_manual_mode = false; 1196 1197 return 0; 1198 } 1199 1200 static int asus_hwmon_fan_rpm_show(struct device *dev, int fan) 1201 { 1202 struct asus_wmi *asus = dev_get_drvdata(dev); 1203 int value; 1204 int ret; 1205 1206 /* no speed readable on manual mode */ 1207 if (asus->asus_hwmon_fan_manual_mode) 1208 return -ENXIO; 1209 1210 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value); 1211 if (ret) { 1212 pr_warn("reading fan speed failed: %d\n", ret); 1213 return -ENXIO; 1214 } 1215 1216 return value; 1217 } 1218 1219 static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value) 1220 { 1221 int err; 1222 1223 if (asus->asus_hwmon_pwm >= 0) { 1224 *value = asus->asus_hwmon_pwm; 1225 return; 1226 } 1227 1228 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value); 1229 if (err < 0) 1230 return; 1231 1232 *value &= 0xFF; 1233 1234 if (*value == 1) /* Low Speed */ 1235 *value = 85; 1236 else if (*value == 2) 1237 *value = 170; 1238 else if (*value == 3) 1239 *value = 255; 1240 else if (*value) { 1241 pr_err("Unknown fan speed %#x\n", *value); 1242 *value = -1; 1243 } 1244 } 1245 1246 static ssize_t pwm1_show(struct device *dev, 1247 struct device_attribute *attr, 1248 char *buf) 1249 { 1250 struct asus_wmi *asus = dev_get_drvdata(dev); 1251 int value; 1252 1253 asus_hwmon_pwm_show(asus, 0, &value); 1254 1255 return sprintf(buf, "%d\n", value); 1256 } 1257 1258 static ssize_t pwm1_store(struct device *dev, 1259 struct device_attribute *attr, 1260 const char *buf, size_t count) { 1261 struct asus_wmi *asus = dev_get_drvdata(dev); 1262 int value; 1263 int state; 1264 int ret; 1265 1266 ret = kstrtouint(buf, 10, &value); 1267 1268 if (ret) 1269 return ret; 1270 1271 value = clamp(value, 0, 255); 1272 1273 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value); 1274 if (state) 1275 pr_warn("Setting fan speed failed: %d\n", state); 1276 else 1277 asus->asus_hwmon_fan_manual_mode = true; 1278 1279 return count; 1280 } 1281 1282 static ssize_t fan1_input_show(struct device *dev, 1283 struct device_attribute *attr, 1284 char *buf) 1285 { 1286 int value = asus_hwmon_fan_rpm_show(dev, 0); 1287 1288 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100); 1289 1290 } 1291 1292 static ssize_t pwm1_enable_show(struct device *dev, 1293 struct device_attribute *attr, 1294 char *buf) 1295 { 1296 struct asus_wmi *asus = dev_get_drvdata(dev); 1297 1298 if (asus->asus_hwmon_fan_manual_mode) 1299 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL); 1300 1301 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO); 1302 } 1303 1304 static ssize_t pwm1_enable_store(struct device *dev, 1305 struct device_attribute *attr, 1306 const char *buf, size_t count) 1307 { 1308 struct asus_wmi *asus = dev_get_drvdata(dev); 1309 int status = 0; 1310 int state; 1311 int ret; 1312 1313 ret = kstrtouint(buf, 10, &state); 1314 1315 if (ret) 1316 return ret; 1317 1318 if (state == ASUS_FAN_CTRL_MANUAL) 1319 asus->asus_hwmon_fan_manual_mode = true; 1320 else 1321 status = asus_hwmon_fan_set_auto(asus); 1322 1323 if (status) 1324 return status; 1325 1326 return count; 1327 } 1328 1329 static ssize_t fan1_label_show(struct device *dev, 1330 struct device_attribute *attr, 1331 char *buf) 1332 { 1333 return sprintf(buf, "%s\n", ASUS_FAN_DESC); 1334 } 1335 1336 static ssize_t asus_hwmon_temp1(struct device *dev, 1337 struct device_attribute *attr, 1338 char *buf) 1339 { 1340 struct asus_wmi *asus = dev_get_drvdata(dev); 1341 u32 value; 1342 int err; 1343 1344 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value); 1345 1346 if (err < 0) 1347 return err; 1348 1349 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000; 1350 1351 return sprintf(buf, "%d\n", value); 1352 } 1353 1354 /* Fan1 */ 1355 static DEVICE_ATTR_RW(pwm1); 1356 static DEVICE_ATTR_RW(pwm1_enable); 1357 static DEVICE_ATTR_RO(fan1_input); 1358 static DEVICE_ATTR_RO(fan1_label); 1359 1360 /* Temperature */ 1361 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL); 1362 1363 static struct attribute *hwmon_attributes[] = { 1364 &dev_attr_pwm1.attr, 1365 &dev_attr_pwm1_enable.attr, 1366 &dev_attr_fan1_input.attr, 1367 &dev_attr_fan1_label.attr, 1368 1369 &dev_attr_temp1_input.attr, 1370 NULL 1371 }; 1372 1373 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj, 1374 struct attribute *attr, int idx) 1375 { 1376 struct device *dev = container_of(kobj, struct device, kobj); 1377 struct platform_device *pdev = to_platform_device(dev->parent); 1378 struct asus_wmi *asus = platform_get_drvdata(pdev); 1379 int dev_id = -1; 1380 int fan_attr = -1; 1381 u32 value = ASUS_WMI_UNSUPPORTED_METHOD; 1382 bool ok = true; 1383 1384 if (attr == &dev_attr_pwm1.attr) 1385 dev_id = ASUS_WMI_DEVID_FAN_CTRL; 1386 else if (attr == &dev_attr_temp1_input.attr) 1387 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL; 1388 1389 1390 if (attr == &dev_attr_fan1_input.attr 1391 || attr == &dev_attr_fan1_label.attr 1392 || attr == &dev_attr_pwm1.attr 1393 || attr == &dev_attr_pwm1_enable.attr) { 1394 fan_attr = 1; 1395 } 1396 1397 if (dev_id != -1) { 1398 int err = asus_wmi_get_devstate(asus, dev_id, &value); 1399 1400 if (err < 0 && fan_attr == -1) 1401 return 0; /* can't return negative here */ 1402 } 1403 1404 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) { 1405 /* 1406 * We need to find a better way, probably using sfun, 1407 * bits or spec ... 1408 * Currently we disable it if: 1409 * - ASUS_WMI_UNSUPPORTED_METHOD is returned 1410 * - reverved bits are non-zero 1411 * - sfun and presence bit are not set 1412 */ 1413 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000 1414 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT))) 1415 ok = false; 1416 else 1417 ok = fan_attr <= asus->asus_hwmon_num_fans; 1418 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) { 1419 /* If value is zero, something is clearly wrong */ 1420 if (!value) 1421 ok = false; 1422 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) { 1423 ok = true; 1424 } else { 1425 ok = false; 1426 } 1427 1428 return ok ? attr->mode : 0; 1429 } 1430 1431 static struct attribute_group hwmon_attribute_group = { 1432 .is_visible = asus_hwmon_sysfs_is_visible, 1433 .attrs = hwmon_attributes 1434 }; 1435 __ATTRIBUTE_GROUPS(hwmon_attribute); 1436 1437 static int asus_wmi_hwmon_init(struct asus_wmi *asus) 1438 { 1439 struct device *hwmon; 1440 1441 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev, 1442 "asus", asus, 1443 hwmon_attribute_groups); 1444 if (IS_ERR(hwmon)) { 1445 pr_err("Could not register asus hwmon device\n"); 1446 return PTR_ERR(hwmon); 1447 } 1448 return 0; 1449 } 1450 1451 /* 1452 * Backlight 1453 */ 1454 static int read_backlight_power(struct asus_wmi *asus) 1455 { 1456 int ret; 1457 if (asus->driver->quirks->store_backlight_power) 1458 ret = !asus->driver->panel_power; 1459 else 1460 ret = asus_wmi_get_devstate_simple(asus, 1461 ASUS_WMI_DEVID_BACKLIGHT); 1462 1463 if (ret < 0) 1464 return ret; 1465 1466 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1467 } 1468 1469 static int read_brightness_max(struct asus_wmi *asus) 1470 { 1471 u32 retval; 1472 int err; 1473 1474 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1475 1476 if (err < 0) 1477 return err; 1478 1479 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK; 1480 retval >>= 8; 1481 1482 if (!retval) 1483 return -ENODEV; 1484 1485 return retval; 1486 } 1487 1488 static int read_brightness(struct backlight_device *bd) 1489 { 1490 struct asus_wmi *asus = bl_get_data(bd); 1491 u32 retval; 1492 int err; 1493 1494 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval); 1495 1496 if (err < 0) 1497 return err; 1498 1499 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; 1500 } 1501 1502 static u32 get_scalar_command(struct backlight_device *bd) 1503 { 1504 struct asus_wmi *asus = bl_get_data(bd); 1505 u32 ctrl_param = 0; 1506 1507 if ((asus->driver->brightness < bd->props.brightness) || 1508 bd->props.brightness == bd->props.max_brightness) 1509 ctrl_param = 0x00008001; 1510 else if ((asus->driver->brightness > bd->props.brightness) || 1511 bd->props.brightness == 0) 1512 ctrl_param = 0x00008000; 1513 1514 asus->driver->brightness = bd->props.brightness; 1515 1516 return ctrl_param; 1517 } 1518 1519 static int update_bl_status(struct backlight_device *bd) 1520 { 1521 struct asus_wmi *asus = bl_get_data(bd); 1522 u32 ctrl_param; 1523 int power, err = 0; 1524 1525 power = read_backlight_power(asus); 1526 if (power != -ENODEV && bd->props.power != power) { 1527 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); 1528 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 1529 ctrl_param, NULL); 1530 if (asus->driver->quirks->store_backlight_power) 1531 asus->driver->panel_power = bd->props.power; 1532 1533 /* When using scalar brightness, updating the brightness 1534 * will mess with the backlight power */ 1535 if (asus->driver->quirks->scalar_panel_brightness) 1536 return err; 1537 } 1538 1539 if (asus->driver->quirks->scalar_panel_brightness) 1540 ctrl_param = get_scalar_command(bd); 1541 else 1542 ctrl_param = bd->props.brightness; 1543 1544 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, 1545 ctrl_param, NULL); 1546 1547 return err; 1548 } 1549 1550 static const struct backlight_ops asus_wmi_bl_ops = { 1551 .get_brightness = read_brightness, 1552 .update_status = update_bl_status, 1553 }; 1554 1555 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code) 1556 { 1557 struct backlight_device *bd = asus->backlight_device; 1558 int old = bd->props.brightness; 1559 int new = old; 1560 1561 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1562 new = code - NOTIFY_BRNUP_MIN + 1; 1563 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) 1564 new = code - NOTIFY_BRNDOWN_MIN; 1565 1566 bd->props.brightness = new; 1567 backlight_update_status(bd); 1568 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 1569 1570 return old; 1571 } 1572 1573 static int asus_wmi_backlight_init(struct asus_wmi *asus) 1574 { 1575 struct backlight_device *bd; 1576 struct backlight_properties props; 1577 int max; 1578 int power; 1579 1580 max = read_brightness_max(asus); 1581 if (max < 0) 1582 return max; 1583 1584 power = read_backlight_power(asus); 1585 1586 if (power == -ENODEV) 1587 power = FB_BLANK_UNBLANK; 1588 else if (power < 0) 1589 return power; 1590 1591 memset(&props, 0, sizeof(struct backlight_properties)); 1592 props.type = BACKLIGHT_PLATFORM; 1593 props.max_brightness = max; 1594 bd = backlight_device_register(asus->driver->name, 1595 &asus->platform_device->dev, asus, 1596 &asus_wmi_bl_ops, &props); 1597 if (IS_ERR(bd)) { 1598 pr_err("Could not register backlight device\n"); 1599 return PTR_ERR(bd); 1600 } 1601 1602 asus->backlight_device = bd; 1603 1604 if (asus->driver->quirks->store_backlight_power) 1605 asus->driver->panel_power = power; 1606 1607 bd->props.brightness = read_brightness(bd); 1608 bd->props.power = power; 1609 backlight_update_status(bd); 1610 1611 asus->driver->brightness = bd->props.brightness; 1612 1613 return 0; 1614 } 1615 1616 static void asus_wmi_backlight_exit(struct asus_wmi *asus) 1617 { 1618 backlight_device_unregister(asus->backlight_device); 1619 1620 asus->backlight_device = NULL; 1621 } 1622 1623 static int is_display_toggle(int code) 1624 { 1625 /* display toggle keys */ 1626 if ((code >= 0x61 && code <= 0x67) || 1627 (code >= 0x8c && code <= 0x93) || 1628 (code >= 0xa0 && code <= 0xa7) || 1629 (code >= 0xd0 && code <= 0xd5)) 1630 return 1; 1631 1632 return 0; 1633 } 1634 1635 static void asus_wmi_notify(u32 value, void *context) 1636 { 1637 struct asus_wmi *asus = context; 1638 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; 1639 union acpi_object *obj; 1640 acpi_status status; 1641 int code; 1642 int orig_code; 1643 unsigned int key_value = 1; 1644 bool autorelease = 1; 1645 1646 status = wmi_get_event_data(value, &response); 1647 if (status != AE_OK) { 1648 pr_err("bad event status 0x%x\n", status); 1649 return; 1650 } 1651 1652 obj = (union acpi_object *)response.pointer; 1653 1654 if (!obj || obj->type != ACPI_TYPE_INTEGER) 1655 goto exit; 1656 1657 code = obj->integer.value; 1658 orig_code = code; 1659 1660 if (asus->driver->key_filter) { 1661 asus->driver->key_filter(asus->driver, &code, &key_value, 1662 &autorelease); 1663 if (code == ASUS_WMI_KEY_IGNORE) 1664 goto exit; 1665 } 1666 1667 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) 1668 code = ASUS_WMI_BRN_UP; 1669 else if (code >= NOTIFY_BRNDOWN_MIN && 1670 code <= NOTIFY_BRNDOWN_MAX) 1671 code = ASUS_WMI_BRN_DOWN; 1672 1673 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) { 1674 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 1675 asus_wmi_backlight_notify(asus, orig_code); 1676 goto exit; 1677 } 1678 } 1679 1680 if (is_display_toggle(code) && 1681 asus->driver->quirks->no_display_toggle) 1682 goto exit; 1683 1684 if (!sparse_keymap_report_event(asus->inputdev, code, 1685 key_value, autorelease)) 1686 pr_info("Unknown key %x pressed\n", code); 1687 1688 exit: 1689 kfree(obj); 1690 } 1691 1692 /* 1693 * Sys helpers 1694 */ 1695 static int parse_arg(const char *buf, unsigned long count, int *val) 1696 { 1697 if (!count) 1698 return 0; 1699 if (sscanf(buf, "%i", val) != 1) 1700 return -EINVAL; 1701 return count; 1702 } 1703 1704 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid, 1705 const char *buf, size_t count) 1706 { 1707 u32 retval; 1708 int rv, err, value; 1709 1710 value = asus_wmi_get_devstate_simple(asus, devid); 1711 if (value < 0) 1712 return value; 1713 1714 rv = parse_arg(buf, count, &value); 1715 err = asus_wmi_set_devstate(devid, value, &retval); 1716 1717 if (err < 0) 1718 return err; 1719 1720 return rv; 1721 } 1722 1723 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf) 1724 { 1725 int value = asus_wmi_get_devstate_simple(asus, devid); 1726 1727 if (value < 0) 1728 return value; 1729 1730 return sprintf(buf, "%d\n", value); 1731 } 1732 1733 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ 1734 static ssize_t show_##_name(struct device *dev, \ 1735 struct device_attribute *attr, \ 1736 char *buf) \ 1737 { \ 1738 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1739 \ 1740 return show_sys_wmi(asus, _cm, buf); \ 1741 } \ 1742 static ssize_t store_##_name(struct device *dev, \ 1743 struct device_attribute *attr, \ 1744 const char *buf, size_t count) \ 1745 { \ 1746 struct asus_wmi *asus = dev_get_drvdata(dev); \ 1747 \ 1748 return store_sys_wmi(asus, _cm, buf, count); \ 1749 } \ 1750 static struct device_attribute dev_attr_##_name = { \ 1751 .attr = { \ 1752 .name = __stringify(_name), \ 1753 .mode = _mode }, \ 1754 .show = show_##_name, \ 1755 .store = store_##_name, \ 1756 } 1757 1758 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD); 1759 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA); 1760 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER); 1761 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME); 1762 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE); 1763 1764 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, 1765 const char *buf, size_t count) 1766 { 1767 int value, rv; 1768 1769 if (!count || sscanf(buf, "%i", &value) != 1) 1770 return -EINVAL; 1771 if (value < 0 || value > 2) 1772 return -EINVAL; 1773 1774 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL); 1775 if (rv < 0) 1776 return rv; 1777 1778 return count; 1779 } 1780 1781 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); 1782 1783 static struct attribute *platform_attributes[] = { 1784 &dev_attr_cpufv.attr, 1785 &dev_attr_camera.attr, 1786 &dev_attr_cardr.attr, 1787 &dev_attr_touchpad.attr, 1788 &dev_attr_lid_resume.attr, 1789 &dev_attr_als_enable.attr, 1790 NULL 1791 }; 1792 1793 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1794 struct attribute *attr, int idx) 1795 { 1796 struct device *dev = container_of(kobj, struct device, kobj); 1797 struct platform_device *pdev = to_platform_device(dev); 1798 struct asus_wmi *asus = platform_get_drvdata(pdev); 1799 bool ok = true; 1800 int devid = -1; 1801 1802 if (attr == &dev_attr_camera.attr) 1803 devid = ASUS_WMI_DEVID_CAMERA; 1804 else if (attr == &dev_attr_cardr.attr) 1805 devid = ASUS_WMI_DEVID_CARDREADER; 1806 else if (attr == &dev_attr_touchpad.attr) 1807 devid = ASUS_WMI_DEVID_TOUCHPAD; 1808 else if (attr == &dev_attr_lid_resume.attr) 1809 devid = ASUS_WMI_DEVID_LID_RESUME; 1810 else if (attr == &dev_attr_als_enable.attr) 1811 devid = ASUS_WMI_DEVID_ALS_ENABLE; 1812 1813 if (devid != -1) 1814 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); 1815 1816 return ok ? attr->mode : 0; 1817 } 1818 1819 static struct attribute_group platform_attribute_group = { 1820 .is_visible = asus_sysfs_is_visible, 1821 .attrs = platform_attributes 1822 }; 1823 1824 static void asus_wmi_sysfs_exit(struct platform_device *device) 1825 { 1826 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); 1827 } 1828 1829 static int asus_wmi_sysfs_init(struct platform_device *device) 1830 { 1831 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); 1832 } 1833 1834 /* 1835 * Platform device 1836 */ 1837 static int asus_wmi_platform_init(struct asus_wmi *asus) 1838 { 1839 int rv; 1840 1841 /* INIT enable hotkeys on some models */ 1842 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv)) 1843 pr_info("Initialization: %#x\n", rv); 1844 1845 /* We don't know yet what to do with this version... */ 1846 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) { 1847 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF); 1848 asus->spec = rv; 1849 } 1850 1851 /* 1852 * The SFUN method probably allows the original driver to get the list 1853 * of features supported by a given model. For now, 0x0100 or 0x0800 1854 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 1855 * The significance of others is yet to be found. 1856 */ 1857 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) { 1858 pr_info("SFUN value: %#x\n", rv); 1859 asus->sfun = rv; 1860 } 1861 1862 /* 1863 * Eee PC and Notebooks seems to have different method_id for DSTS, 1864 * but it may also be related to the BIOS's SPEC. 1865 * Note, on most Eeepc, there is no way to check if a method exist 1866 * or note, while on notebooks, they returns 0xFFFFFFFE on failure, 1867 * but once again, SPEC may probably be used for that kind of things. 1868 */ 1869 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL)) 1870 asus->dsts_id = ASUS_WMI_METHODID_DSTS; 1871 else 1872 asus->dsts_id = ASUS_WMI_METHODID_DSTS2; 1873 1874 /* CWAP allow to define the behavior of the Fn+F2 key, 1875 * this method doesn't seems to be present on Eee PCs */ 1876 if (asus->driver->quirks->wapf >= 0) 1877 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, 1878 asus->driver->quirks->wapf, NULL); 1879 1880 return asus_wmi_sysfs_init(asus->platform_device); 1881 } 1882 1883 static void asus_wmi_platform_exit(struct asus_wmi *asus) 1884 { 1885 asus_wmi_sysfs_exit(asus->platform_device); 1886 } 1887 1888 /* 1889 * debugfs 1890 */ 1891 struct asus_wmi_debugfs_node { 1892 struct asus_wmi *asus; 1893 char *name; 1894 int (*show) (struct seq_file *m, void *data); 1895 }; 1896 1897 static int show_dsts(struct seq_file *m, void *data) 1898 { 1899 struct asus_wmi *asus = m->private; 1900 int err; 1901 u32 retval = -1; 1902 1903 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); 1904 1905 if (err < 0) 1906 return err; 1907 1908 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval); 1909 1910 return 0; 1911 } 1912 1913 static int show_devs(struct seq_file *m, void *data) 1914 { 1915 struct asus_wmi *asus = m->private; 1916 int err; 1917 u32 retval = -1; 1918 1919 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, 1920 &retval); 1921 1922 if (err < 0) 1923 return err; 1924 1925 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id, 1926 asus->debug.ctrl_param, retval); 1927 1928 return 0; 1929 } 1930 1931 static int show_call(struct seq_file *m, void *data) 1932 { 1933 struct asus_wmi *asus = m->private; 1934 struct bios_args args = { 1935 .arg0 = asus->debug.dev_id, 1936 .arg1 = asus->debug.ctrl_param, 1937 }; 1938 struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; 1939 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; 1940 union acpi_object *obj; 1941 acpi_status status; 1942 1943 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1944 1, asus->debug.method_id, 1945 &input, &output); 1946 1947 if (ACPI_FAILURE(status)) 1948 return -EIO; 1949 1950 obj = (union acpi_object *)output.pointer; 1951 if (obj && obj->type == ACPI_TYPE_INTEGER) 1952 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id, 1953 asus->debug.dev_id, asus->debug.ctrl_param, 1954 (u32) obj->integer.value); 1955 else 1956 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id, 1957 asus->debug.dev_id, asus->debug.ctrl_param, 1958 obj ? obj->type : -1); 1959 1960 kfree(obj); 1961 1962 return 0; 1963 } 1964 1965 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = { 1966 {NULL, "devs", show_devs}, 1967 {NULL, "dsts", show_dsts}, 1968 {NULL, "call", show_call}, 1969 }; 1970 1971 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file) 1972 { 1973 struct asus_wmi_debugfs_node *node = inode->i_private; 1974 1975 return single_open(file, node->show, node->asus); 1976 } 1977 1978 static const struct file_operations asus_wmi_debugfs_io_ops = { 1979 .owner = THIS_MODULE, 1980 .open = asus_wmi_debugfs_open, 1981 .read = seq_read, 1982 .llseek = seq_lseek, 1983 .release = single_release, 1984 }; 1985 1986 static void asus_wmi_debugfs_exit(struct asus_wmi *asus) 1987 { 1988 debugfs_remove_recursive(asus->debug.root); 1989 } 1990 1991 static int asus_wmi_debugfs_init(struct asus_wmi *asus) 1992 { 1993 struct dentry *dent; 1994 int i; 1995 1996 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL); 1997 if (!asus->debug.root) { 1998 pr_err("failed to create debugfs directory\n"); 1999 goto error_debugfs; 2000 } 2001 2002 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, 2003 asus->debug.root, &asus->debug.method_id); 2004 if (!dent) 2005 goto error_debugfs; 2006 2007 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, 2008 asus->debug.root, &asus->debug.dev_id); 2009 if (!dent) 2010 goto error_debugfs; 2011 2012 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, 2013 asus->debug.root, &asus->debug.ctrl_param); 2014 if (!dent) 2015 goto error_debugfs; 2016 2017 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) { 2018 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i]; 2019 2020 node->asus = asus; 2021 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, 2022 asus->debug.root, node, 2023 &asus_wmi_debugfs_io_ops); 2024 if (!dent) { 2025 pr_err("failed to create debug file: %s\n", node->name); 2026 goto error_debugfs; 2027 } 2028 } 2029 2030 return 0; 2031 2032 error_debugfs: 2033 asus_wmi_debugfs_exit(asus); 2034 return -ENOMEM; 2035 } 2036 2037 static int asus_wmi_fan_init(struct asus_wmi *asus) 2038 { 2039 int status; 2040 2041 asus->asus_hwmon_pwm = -1; 2042 asus->asus_hwmon_num_fans = -1; 2043 asus->asus_hwmon_fan_manual_mode = false; 2044 2045 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans); 2046 if (status) { 2047 asus->asus_hwmon_num_fans = 0; 2048 pr_warn("Could not determine number of fans: %d\n", status); 2049 return -ENXIO; 2050 } 2051 2052 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans); 2053 return 0; 2054 } 2055 2056 static bool ashs_present(void) 2057 { 2058 int i = 0; 2059 while (ashs_ids[i]) { 2060 if (acpi_dev_found(ashs_ids[i++])) 2061 return true; 2062 } 2063 return false; 2064 } 2065 2066 /* 2067 * WMI Driver 2068 */ 2069 static int asus_wmi_add(struct platform_device *pdev) 2070 { 2071 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2072 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2073 struct asus_wmi *asus; 2074 const char *chassis_type; 2075 acpi_status status; 2076 int err; 2077 u32 result; 2078 2079 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL); 2080 if (!asus) 2081 return -ENOMEM; 2082 2083 asus->driver = wdrv; 2084 asus->platform_device = pdev; 2085 wdrv->platform_device = pdev; 2086 platform_set_drvdata(asus->platform_device, asus); 2087 2088 if (wdrv->detect_quirks) 2089 wdrv->detect_quirks(asus->driver); 2090 2091 err = asus_wmi_platform_init(asus); 2092 if (err) 2093 goto fail_platform; 2094 2095 err = asus_wmi_input_init(asus); 2096 if (err) 2097 goto fail_input; 2098 2099 err = asus_wmi_fan_init(asus); /* probably no problems on error */ 2100 asus_hwmon_fan_set_auto(asus); 2101 2102 err = asus_wmi_hwmon_init(asus); 2103 if (err) 2104 goto fail_hwmon; 2105 2106 err = asus_wmi_led_init(asus); 2107 if (err) 2108 goto fail_leds; 2109 2110 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result); 2111 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT)) 2112 asus->driver->wlan_ctrl_by_user = 1; 2113 2114 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) { 2115 err = asus_wmi_rfkill_init(asus); 2116 if (err) 2117 goto fail_rfkill; 2118 } 2119 2120 /* Some Asus desktop boards export an acpi-video backlight interface, 2121 stop this from showing up */ 2122 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); 2123 if (chassis_type && !strcmp(chassis_type, "3")) 2124 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2125 2126 if (asus->driver->quirks->wmi_backlight_power) 2127 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); 2128 2129 if (asus->driver->quirks->wmi_backlight_native) 2130 acpi_video_set_dmi_backlight_type(acpi_backlight_native); 2131 2132 if (asus->driver->quirks->xusb2pr) 2133 asus_wmi_set_xusb2pr(asus); 2134 2135 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 2136 err = asus_wmi_backlight_init(asus); 2137 if (err && err != -ENODEV) 2138 goto fail_backlight; 2139 } 2140 2141 status = wmi_install_notify_handler(asus->driver->event_guid, 2142 asus_wmi_notify, asus); 2143 if (ACPI_FAILURE(status)) { 2144 pr_err("Unable to register notify handler - %d\n", status); 2145 err = -ENODEV; 2146 goto fail_wmi_handler; 2147 } 2148 2149 err = asus_wmi_debugfs_init(asus); 2150 if (err) 2151 goto fail_debugfs; 2152 2153 return 0; 2154 2155 fail_debugfs: 2156 wmi_remove_notify_handler(asus->driver->event_guid); 2157 fail_wmi_handler: 2158 asus_wmi_backlight_exit(asus); 2159 fail_backlight: 2160 asus_wmi_rfkill_exit(asus); 2161 fail_rfkill: 2162 asus_wmi_led_exit(asus); 2163 fail_leds: 2164 fail_hwmon: 2165 asus_wmi_input_exit(asus); 2166 fail_input: 2167 asus_wmi_platform_exit(asus); 2168 fail_platform: 2169 kfree(asus); 2170 return err; 2171 } 2172 2173 static int asus_wmi_remove(struct platform_device *device) 2174 { 2175 struct asus_wmi *asus; 2176 2177 asus = platform_get_drvdata(device); 2178 wmi_remove_notify_handler(asus->driver->event_guid); 2179 asus_wmi_backlight_exit(asus); 2180 asus_wmi_input_exit(asus); 2181 asus_wmi_led_exit(asus); 2182 asus_wmi_rfkill_exit(asus); 2183 asus_wmi_debugfs_exit(asus); 2184 asus_wmi_platform_exit(asus); 2185 asus_hwmon_fan_set_auto(asus); 2186 2187 kfree(asus); 2188 return 0; 2189 } 2190 2191 /* 2192 * Platform driver - hibernate/resume callbacks 2193 */ 2194 static int asus_hotk_thaw(struct device *device) 2195 { 2196 struct asus_wmi *asus = dev_get_drvdata(device); 2197 2198 if (asus->wlan.rfkill) { 2199 bool wlan; 2200 2201 /* 2202 * Work around bios bug - acpi _PTS turns off the wireless led 2203 * during suspend. Normally it restores it on resume, but 2204 * we should kick it ourselves in case hibernation is aborted. 2205 */ 2206 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN); 2207 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL); 2208 } 2209 2210 return 0; 2211 } 2212 2213 static int asus_hotk_resume(struct device *device) 2214 { 2215 struct asus_wmi *asus = dev_get_drvdata(device); 2216 2217 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2218 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2219 2220 return 0; 2221 } 2222 2223 static int asus_hotk_restore(struct device *device) 2224 { 2225 struct asus_wmi *asus = dev_get_drvdata(device); 2226 int bl; 2227 2228 /* Refresh both wlan rfkill state and pci hotplug */ 2229 if (asus->wlan.rfkill) 2230 asus_rfkill_hotplug(asus); 2231 2232 if (asus->bluetooth.rfkill) { 2233 bl = !asus_wmi_get_devstate_simple(asus, 2234 ASUS_WMI_DEVID_BLUETOOTH); 2235 rfkill_set_sw_state(asus->bluetooth.rfkill, bl); 2236 } 2237 if (asus->wimax.rfkill) { 2238 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX); 2239 rfkill_set_sw_state(asus->wimax.rfkill, bl); 2240 } 2241 if (asus->wwan3g.rfkill) { 2242 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G); 2243 rfkill_set_sw_state(asus->wwan3g.rfkill, bl); 2244 } 2245 if (asus->gps.rfkill) { 2246 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS); 2247 rfkill_set_sw_state(asus->gps.rfkill, bl); 2248 } 2249 if (asus->uwb.rfkill) { 2250 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB); 2251 rfkill_set_sw_state(asus->uwb.rfkill, bl); 2252 } 2253 if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) 2254 queue_work(asus->led_workqueue, &asus->kbd_led_work); 2255 2256 return 0; 2257 } 2258 2259 static const struct dev_pm_ops asus_pm_ops = { 2260 .thaw = asus_hotk_thaw, 2261 .restore = asus_hotk_restore, 2262 .resume = asus_hotk_resume, 2263 }; 2264 2265 static int asus_wmi_probe(struct platform_device *pdev) 2266 { 2267 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver); 2268 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv); 2269 int ret; 2270 2271 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2272 pr_warn("Management GUID not found\n"); 2273 return -ENODEV; 2274 } 2275 2276 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) { 2277 pr_warn("Event GUID not found\n"); 2278 return -ENODEV; 2279 } 2280 2281 if (wdrv->probe) { 2282 ret = wdrv->probe(pdev); 2283 if (ret) 2284 return ret; 2285 } 2286 2287 return asus_wmi_add(pdev); 2288 } 2289 2290 static bool used; 2291 2292 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver) 2293 { 2294 struct platform_driver *platform_driver; 2295 struct platform_device *platform_device; 2296 2297 if (used) 2298 return -EBUSY; 2299 2300 platform_driver = &driver->platform_driver; 2301 platform_driver->remove = asus_wmi_remove; 2302 platform_driver->driver.owner = driver->owner; 2303 platform_driver->driver.name = driver->name; 2304 platform_driver->driver.pm = &asus_pm_ops; 2305 2306 platform_device = platform_create_bundle(platform_driver, 2307 asus_wmi_probe, 2308 NULL, 0, NULL, 0); 2309 if (IS_ERR(platform_device)) 2310 return PTR_ERR(platform_device); 2311 2312 used = true; 2313 return 0; 2314 } 2315 EXPORT_SYMBOL_GPL(asus_wmi_register_driver); 2316 2317 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver) 2318 { 2319 platform_device_unregister(driver->platform_device); 2320 platform_driver_unregister(&driver->platform_driver); 2321 used = false; 2322 } 2323 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver); 2324 2325 static int __init asus_wmi_init(void) 2326 { 2327 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) { 2328 pr_info("Asus Management GUID not found\n"); 2329 return -ENODEV; 2330 } 2331 2332 pr_info("ASUS WMI generic driver loaded\n"); 2333 return 0; 2334 } 2335 2336 static void __exit asus_wmi_exit(void) 2337 { 2338 pr_info("ASUS WMI generic driver unloaded\n"); 2339 } 2340 2341 module_init(asus_wmi_init); 2342 module_exit(asus_wmi_exit); 2343