asus-laptop.c revision 8fcf71aa0032acbd30b3222f9cb238919ab3b984
1/* 2 * asus-laptop.c - Asus Laptop Support 3 * 4 * 5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor 6 * Copyright (C) 2006-2007 Corentin Chary 7 * Copyright (C) 2011 Wind River Systems 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * 24 * The development page for this driver is located at 25 * http://sourceforge.net/projects/acpi4asus/ 26 * 27 * Credits: 28 * Pontus Fuchs - Helper functions, cleanup 29 * Johann Wiesner - Small compile fixes 30 * John Belmonte - ACPI code for Toshiba laptop was a good starting point. 31 * Eric Burghard - LED display support for W1N 32 * Josh Green - Light Sens support 33 * Thomas Tuttle - His first patch for led support was very helpful 34 * Sam Lin - GPS support 35 */ 36 37#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 38 39#include <linux/kernel.h> 40#include <linux/module.h> 41#include <linux/init.h> 42#include <linux/types.h> 43#include <linux/err.h> 44#include <linux/proc_fs.h> 45#include <linux/backlight.h> 46#include <linux/fb.h> 47#include <linux/leds.h> 48#include <linux/platform_device.h> 49#include <linux/uaccess.h> 50#include <linux/input.h> 51#include <linux/input/sparse-keymap.h> 52#include <linux/input-polldev.h> 53#include <linux/rfkill.h> 54#include <linux/slab.h> 55#include <linux/dmi.h> 56#include <acpi/acpi_drivers.h> 57#include <acpi/acpi_bus.h> 58 59#define ASUS_LAPTOP_VERSION "0.42" 60 61#define ASUS_LAPTOP_NAME "Asus Laptop Support" 62#define ASUS_LAPTOP_CLASS "hotkey" 63#define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 64#define ASUS_LAPTOP_FILE KBUILD_MODNAME 65#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 66 67MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 68MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 69MODULE_LICENSE("GPL"); 70 71/* 72 * WAPF defines the behavior of the Fn+Fx wlan key 73 * The significance of values is yet to be found, but 74 * most of the time: 75 * Bit | Bluetooth | WLAN 76 * 0 | Hardware | Hardware 77 * 1 | Hardware | Software 78 * 4 | Software | Software 79 */ 80static uint wapf = 1; 81module_param(wapf, uint, 0444); 82MODULE_PARM_DESC(wapf, "WAPF value"); 83 84static int wlan_status = 1; 85static int bluetooth_status = 1; 86static int wimax_status = -1; 87static int wwan_status = -1; 88 89module_param(wlan_status, int, 0444); 90MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot " 91 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 92 "default is 1"); 93 94module_param(bluetooth_status, int, 0444); 95MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 96 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 97 "default is 1"); 98 99module_param(wimax_status, int, 0444); 100MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot " 101 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 102 "default is 1"); 103 104module_param(wwan_status, int, 0444); 105MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot " 106 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 107 "default is 1"); 108 109/* 110 * Some events we use, same for all Asus 111 */ 112#define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */ 113#define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */ 114#define ATKD_BR_MIN ATKD_BR_UP 115#define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */ 116#define ATKD_LCD_ON 0x33 117#define ATKD_LCD_OFF 0x34 118 119/* 120 * Known bits returned by \_SB.ATKD.HWRS 121 */ 122#define WL_HWRS 0x80 123#define BT_HWRS 0x100 124 125/* 126 * Flags for hotk status 127 * WL_ON and BT_ON are also used for wireless_status() 128 */ 129#define WL_RSTS 0x01 /* internal Wifi */ 130#define BT_RSTS 0x02 /* internal Bluetooth */ 131#define WM_RSTS 0x08 /* internal wimax */ 132#define WW_RSTS 0x20 /* internal wwan */ 133 134/* LED */ 135#define METHOD_MLED "MLED" 136#define METHOD_TLED "TLED" 137#define METHOD_RLED "RLED" /* W1JC */ 138#define METHOD_PLED "PLED" /* A7J */ 139#define METHOD_GLED "GLED" /* G1, G2 (probably) */ 140 141/* LEDD */ 142#define METHOD_LEDD "SLCM" 143 144/* 145 * Bluetooth and WLAN 146 * WLED and BLED are not handled like other XLED, because in some dsdt 147 * they also control the WLAN/Bluetooth device. 148 */ 149#define METHOD_WLAN "WLED" 150#define METHOD_BLUETOOTH "BLED" 151 152/* WWAN and WIMAX */ 153#define METHOD_WWAN "GSMC" 154#define METHOD_WIMAX "WMXC" 155 156#define METHOD_WL_STATUS "RSTS" 157 158/* Brightness */ 159#define METHOD_BRIGHTNESS_SET "SPLV" 160#define METHOD_BRIGHTNESS_GET "GPLV" 161 162/* Display */ 163#define METHOD_SWITCH_DISPLAY "SDSP" 164 165#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 166#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 167 168/* GPS */ 169/* R2H use different handle for GPS on/off */ 170#define METHOD_GPS_ON "SDON" 171#define METHOD_GPS_OFF "SDOF" 172#define METHOD_GPS_STATUS "GPST" 173 174/* Keyboard light */ 175#define METHOD_KBD_LIGHT_SET "SLKB" 176#define METHOD_KBD_LIGHT_GET "GLKB" 177 178/* For Pegatron Lucid tablet */ 179#define DEVICE_NAME_PEGA "Lucid" 180 181#define METHOD_PEGA_ENABLE "ENPR" 182#define METHOD_PEGA_DISABLE "DAPR" 183#define PEGA_ALS 0x04 184#define PEGA_ALS_POWER 0x05 185 186#define METHOD_PEGA_READ "RDLN" 187#define PEGA_READ_ALS_H 0x02 188#define PEGA_READ_ALS_L 0x03 189 190/* 191 * Define a specific led structure to keep the main structure clean 192 */ 193struct asus_led { 194 int wk; 195 struct work_struct work; 196 struct led_classdev led; 197 struct asus_laptop *asus; 198 const char *method; 199}; 200 201/* 202 * This is the main structure, we can use it to store anything interesting 203 * about the hotk device 204 */ 205struct asus_laptop { 206 char *name; /* laptop name */ 207 208 struct acpi_table_header *dsdt_info; 209 struct platform_device *platform_device; 210 struct acpi_device *device; /* the device we are in */ 211 struct backlight_device *backlight_device; 212 213 struct input_dev *inputdev; 214 struct key_entry *keymap; 215 216 struct asus_led mled; 217 struct asus_led tled; 218 struct asus_led rled; 219 struct asus_led pled; 220 struct asus_led gled; 221 struct asus_led kled; 222 struct workqueue_struct *led_workqueue; 223 224 int wireless_status; 225 bool have_rsts; 226 bool is_pega_lucid; 227 228 struct rfkill *gps_rfkill; 229 230 acpi_handle handle; /* the handle of the hotk device */ 231 u32 ledd_status; /* status of the LED display */ 232 u8 light_level; /* light sensor level */ 233 u8 light_switch; /* light sensor switch value */ 234 u16 event_count[128]; /* count for each event TODO make this better */ 235}; 236 237static const struct key_entry asus_keymap[] = { 238 /* Lenovo SL Specific keycodes */ 239 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 240 {KE_KEY, 0x05, { KEY_WLAN } }, 241 {KE_KEY, 0x08, { KEY_F13 } }, 242 {KE_KEY, 0x17, { KEY_ZOOM } }, 243 {KE_KEY, 0x1f, { KEY_BATTERY } }, 244 /* End of Lenovo SL Specific keycodes */ 245 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 246 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 247 {KE_KEY, 0x32, { KEY_MUTE } }, 248 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } }, 249 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } }, 250 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 251 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 252 {KE_KEY, 0x43, { KEY_STOPCD } }, 253 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 254 {KE_KEY, 0x4c, { KEY_MEDIA } }, 255 {KE_KEY, 0x50, { KEY_EMAIL } }, 256 {KE_KEY, 0x51, { KEY_WWW } }, 257 {KE_KEY, 0x55, { KEY_CALC } }, 258 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 259 {KE_KEY, 0x5D, { KEY_WLAN } }, 260 {KE_KEY, 0x5E, { KEY_WLAN } }, 261 {KE_KEY, 0x5F, { KEY_WLAN } }, 262 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } }, 263 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, 264 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, 265 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, 266 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */ 267 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, 268 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, 269 {KE_KEY, 0x82, { KEY_CAMERA } }, 270 {KE_KEY, 0x88, { KEY_WLAN } }, 271 {KE_KEY, 0x8A, { KEY_PROG1 } }, 272 {KE_KEY, 0x95, { KEY_MEDIA } }, 273 {KE_KEY, 0x99, { KEY_PHONE } }, 274 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } }, 275 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } }, 276 {KE_KEY, 0xb5, { KEY_CALC } }, 277 {KE_END, 0}, 278}; 279 280 281/* 282 * This function evaluates an ACPI method, given an int as parameter, the 283 * method is searched within the scope of the handle, can be NULL. The output 284 * of the method is written is output, which can also be NULL 285 * 286 * returns 0 if write is successful, -1 else. 287 */ 288static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 289 struct acpi_buffer *output) 290{ 291 struct acpi_object_list params; /* list of input parameters (an int) */ 292 union acpi_object in_obj; /* the only param we use */ 293 acpi_status status; 294 295 if (!handle) 296 return -1; 297 298 params.count = 1; 299 params.pointer = &in_obj; 300 in_obj.type = ACPI_TYPE_INTEGER; 301 in_obj.integer.value = val; 302 303 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 304 if (status == AE_OK) 305 return 0; 306 else 307 return -1; 308} 309 310static int write_acpi_int(acpi_handle handle, const char *method, int val) 311{ 312 return write_acpi_int_ret(handle, method, val, NULL); 313} 314 315static int acpi_check_handle(acpi_handle handle, const char *method, 316 acpi_handle *ret) 317{ 318 acpi_status status; 319 320 if (method == NULL) 321 return -ENODEV; 322 323 if (ret) 324 status = acpi_get_handle(handle, (char *)method, 325 ret); 326 else { 327 acpi_handle dummy; 328 329 status = acpi_get_handle(handle, (char *)method, 330 &dummy); 331 } 332 333 if (status != AE_OK) { 334 if (ret) 335 pr_warn("Error finding %s\n", method); 336 return -ENODEV; 337 } 338 return 0; 339} 340 341static bool asus_check_pega_lucid(struct asus_laptop *asus) 342{ 343 return !strcmp(asus->name, DEVICE_NAME_PEGA) && 344 !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) && 345 !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) && 346 !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL); 347} 348 349static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable) 350{ 351 char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE; 352 return write_acpi_int(asus->handle, method, unit); 353} 354 355/* Generic LED function */ 356static int asus_led_set(struct asus_laptop *asus, const char *method, 357 int value) 358{ 359 if (!strcmp(method, METHOD_MLED)) 360 value = !value; 361 else if (!strcmp(method, METHOD_GLED)) 362 value = !value + 1; 363 else 364 value = !!value; 365 366 return write_acpi_int(asus->handle, method, value); 367} 368 369/* 370 * LEDs 371 */ 372/* /sys/class/led handlers */ 373static void asus_led_cdev_set(struct led_classdev *led_cdev, 374 enum led_brightness value) 375{ 376 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 377 struct asus_laptop *asus = led->asus; 378 379 led->wk = !!value; 380 queue_work(asus->led_workqueue, &led->work); 381} 382 383static void asus_led_cdev_update(struct work_struct *work) 384{ 385 struct asus_led *led = container_of(work, struct asus_led, work); 386 struct asus_laptop *asus = led->asus; 387 388 asus_led_set(asus, led->method, led->wk); 389} 390 391static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 392{ 393 return led_cdev->brightness; 394} 395 396/* 397 * Keyboard backlight (also a LED) 398 */ 399static int asus_kled_lvl(struct asus_laptop *asus) 400{ 401 unsigned long long kblv; 402 struct acpi_object_list params; 403 union acpi_object in_obj; 404 acpi_status rv; 405 406 params.count = 1; 407 params.pointer = &in_obj; 408 in_obj.type = ACPI_TYPE_INTEGER; 409 in_obj.integer.value = 2; 410 411 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 412 ¶ms, &kblv); 413 if (ACPI_FAILURE(rv)) { 414 pr_warn("Error reading kled level\n"); 415 return -ENODEV; 416 } 417 return kblv; 418} 419 420static int asus_kled_set(struct asus_laptop *asus, int kblv) 421{ 422 if (kblv > 0) 423 kblv = (1 << 7) | (kblv & 0x7F); 424 else 425 kblv = 0; 426 427 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 428 pr_warn("Keyboard LED display write failed\n"); 429 return -EINVAL; 430 } 431 return 0; 432} 433 434static void asus_kled_cdev_set(struct led_classdev *led_cdev, 435 enum led_brightness value) 436{ 437 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 438 struct asus_laptop *asus = led->asus; 439 440 led->wk = value; 441 queue_work(asus->led_workqueue, &led->work); 442} 443 444static void asus_kled_cdev_update(struct work_struct *work) 445{ 446 struct asus_led *led = container_of(work, struct asus_led, work); 447 struct asus_laptop *asus = led->asus; 448 449 asus_kled_set(asus, led->wk); 450} 451 452static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 453{ 454 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 455 struct asus_laptop *asus = led->asus; 456 457 return asus_kled_lvl(asus); 458} 459 460static void asus_led_exit(struct asus_laptop *asus) 461{ 462 if (!IS_ERR_OR_NULL(asus->mled.led.dev)) 463 led_classdev_unregister(&asus->mled.led); 464 if (!IS_ERR_OR_NULL(asus->tled.led.dev)) 465 led_classdev_unregister(&asus->tled.led); 466 if (!IS_ERR_OR_NULL(asus->pled.led.dev)) 467 led_classdev_unregister(&asus->pled.led); 468 if (!IS_ERR_OR_NULL(asus->rled.led.dev)) 469 led_classdev_unregister(&asus->rled.led); 470 if (!IS_ERR_OR_NULL(asus->gled.led.dev)) 471 led_classdev_unregister(&asus->gled.led); 472 if (!IS_ERR_OR_NULL(asus->kled.led.dev)) 473 led_classdev_unregister(&asus->kled.led); 474 if (asus->led_workqueue) { 475 destroy_workqueue(asus->led_workqueue); 476 asus->led_workqueue = NULL; 477 } 478} 479 480/* Ugly macro, need to fix that later */ 481static int asus_led_register(struct asus_laptop *asus, 482 struct asus_led *led, 483 const char *name, const char *method) 484{ 485 struct led_classdev *led_cdev = &led->led; 486 487 if (!method || acpi_check_handle(asus->handle, method, NULL)) 488 return 0; /* Led not present */ 489 490 led->asus = asus; 491 led->method = method; 492 493 INIT_WORK(&led->work, asus_led_cdev_update); 494 led_cdev->name = name; 495 led_cdev->brightness_set = asus_led_cdev_set; 496 led_cdev->brightness_get = asus_led_cdev_get; 497 led_cdev->max_brightness = 1; 498 return led_classdev_register(&asus->platform_device->dev, led_cdev); 499} 500 501static int asus_led_init(struct asus_laptop *asus) 502{ 503 int r; 504 505 /* 506 * Functions that actually update the LED's are called from a 507 * workqueue. By doing this as separate work rather than when the LED 508 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 509 * potentially bad time, such as a timer interrupt. 510 */ 511 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 512 if (!asus->led_workqueue) 513 return -ENOMEM; 514 515 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 516 if (r) 517 goto error; 518 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 519 if (r) 520 goto error; 521 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 522 if (r) 523 goto error; 524 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 525 if (r) 526 goto error; 527 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 528 if (r) 529 goto error; 530 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 531 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 532 struct asus_led *led = &asus->kled; 533 struct led_classdev *cdev = &led->led; 534 535 led->asus = asus; 536 537 INIT_WORK(&led->work, asus_kled_cdev_update); 538 cdev->name = "asus::kbd_backlight"; 539 cdev->brightness_set = asus_kled_cdev_set; 540 cdev->brightness_get = asus_kled_cdev_get; 541 cdev->max_brightness = 3; 542 r = led_classdev_register(&asus->platform_device->dev, cdev); 543 } 544error: 545 if (r) 546 asus_led_exit(asus); 547 return r; 548} 549 550/* 551 * Backlight device 552 */ 553static int asus_read_brightness(struct backlight_device *bd) 554{ 555 struct asus_laptop *asus = bl_get_data(bd); 556 unsigned long long value; 557 acpi_status rv = AE_OK; 558 559 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 560 NULL, &value); 561 if (ACPI_FAILURE(rv)) 562 pr_warn("Error reading brightness\n"); 563 564 return value; 565} 566 567static int asus_set_brightness(struct backlight_device *bd, int value) 568{ 569 struct asus_laptop *asus = bl_get_data(bd); 570 571 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 572 pr_warn("Error changing brightness\n"); 573 return -EIO; 574 } 575 return 0; 576} 577 578static int update_bl_status(struct backlight_device *bd) 579{ 580 int value = bd->props.brightness; 581 582 return asus_set_brightness(bd, value); 583} 584 585static const struct backlight_ops asusbl_ops = { 586 .get_brightness = asus_read_brightness, 587 .update_status = update_bl_status, 588}; 589 590static int asus_backlight_notify(struct asus_laptop *asus) 591{ 592 struct backlight_device *bd = asus->backlight_device; 593 int old = bd->props.brightness; 594 595 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 596 597 return old; 598} 599 600static int asus_backlight_init(struct asus_laptop *asus) 601{ 602 struct backlight_device *bd; 603 struct backlight_properties props; 604 605 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) || 606 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL)) 607 return 0; 608 609 memset(&props, 0, sizeof(struct backlight_properties)); 610 props.max_brightness = 15; 611 props.type = BACKLIGHT_PLATFORM; 612 613 bd = backlight_device_register(ASUS_LAPTOP_FILE, 614 &asus->platform_device->dev, asus, 615 &asusbl_ops, &props); 616 if (IS_ERR(bd)) { 617 pr_err("Could not register asus backlight device\n"); 618 asus->backlight_device = NULL; 619 return PTR_ERR(bd); 620 } 621 622 asus->backlight_device = bd; 623 bd->props.brightness = asus_read_brightness(bd); 624 bd->props.power = FB_BLANK_UNBLANK; 625 backlight_update_status(bd); 626 return 0; 627} 628 629static void asus_backlight_exit(struct asus_laptop *asus) 630{ 631 if (asus->backlight_device) 632 backlight_device_unregister(asus->backlight_device); 633 asus->backlight_device = NULL; 634} 635 636/* 637 * Platform device handlers 638 */ 639 640/* 641 * We write our info in page, we begin at offset off and cannot write more 642 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 643 * number of bytes written in page 644 */ 645static ssize_t show_infos(struct device *dev, 646 struct device_attribute *attr, char *page) 647{ 648 struct asus_laptop *asus = dev_get_drvdata(dev); 649 int len = 0; 650 unsigned long long temp; 651 char buf[16]; /* enough for all info */ 652 acpi_status rv = AE_OK; 653 654 /* 655 * We use the easy way, we don't care of off and count, 656 * so we don't set eof to 1 657 */ 658 659 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 660 len += sprintf(page + len, "Model reference : %s\n", asus->name); 661 /* 662 * The SFUN method probably allows the original driver to get the list 663 * of features supported by a given model. For now, 0x0100 or 0x0800 664 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 665 * The significance of others is yet to be found. 666 */ 667 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 668 if (!ACPI_FAILURE(rv)) 669 len += sprintf(page + len, "SFUN value : %#x\n", 670 (uint) temp); 671 /* 672 * The HWRS method return informations about the hardware. 673 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 674 * The significance of others is yet to be found. 675 * If we don't find the method, we assume the device are present. 676 */ 677 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 678 if (!ACPI_FAILURE(rv)) 679 len += sprintf(page + len, "HRWS value : %#x\n", 680 (uint) temp); 681 /* 682 * Another value for userspace: the ASYM method returns 0x02 for 683 * battery low and 0x04 for battery critical, its readings tend to be 684 * more accurate than those provided by _BST. 685 * Note: since not all the laptops provide this method, errors are 686 * silently ignored. 687 */ 688 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 689 if (!ACPI_FAILURE(rv)) 690 len += sprintf(page + len, "ASYM value : %#x\n", 691 (uint) temp); 692 if (asus->dsdt_info) { 693 snprintf(buf, 16, "%d", asus->dsdt_info->length); 694 len += sprintf(page + len, "DSDT length : %s\n", buf); 695 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 696 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 697 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 698 len += sprintf(page + len, "DSDT revision : %s\n", buf); 699 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 700 len += sprintf(page + len, "OEM id : %s\n", buf); 701 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 702 len += sprintf(page + len, "OEM table id : %s\n", buf); 703 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 704 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 705 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 706 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 707 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 708 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 709 } 710 711 return len; 712} 713 714static int parse_arg(const char *buf, unsigned long count, int *val) 715{ 716 if (!count) 717 return 0; 718 if (count > 31) 719 return -EINVAL; 720 if (sscanf(buf, "%i", val) != 1) 721 return -EINVAL; 722 return count; 723} 724 725static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 726 const char *buf, size_t count, 727 const char *method) 728{ 729 int rv, value; 730 int out = 0; 731 732 rv = parse_arg(buf, count, &value); 733 if (rv > 0) 734 out = value ? 1 : 0; 735 736 if (write_acpi_int(asus->handle, method, value)) 737 return -ENODEV; 738 return rv; 739} 740 741/* 742 * LEDD display 743 */ 744static ssize_t show_ledd(struct device *dev, 745 struct device_attribute *attr, char *buf) 746{ 747 struct asus_laptop *asus = dev_get_drvdata(dev); 748 749 return sprintf(buf, "0x%08x\n", asus->ledd_status); 750} 751 752static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 753 const char *buf, size_t count) 754{ 755 struct asus_laptop *asus = dev_get_drvdata(dev); 756 int rv, value; 757 758 rv = parse_arg(buf, count, &value); 759 if (rv > 0) { 760 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) { 761 pr_warn("LED display write failed\n"); 762 return -ENODEV; 763 } 764 asus->ledd_status = (u32) value; 765 } 766 return rv; 767} 768 769/* 770 * Wireless 771 */ 772static int asus_wireless_status(struct asus_laptop *asus, int mask) 773{ 774 unsigned long long status; 775 acpi_status rv = AE_OK; 776 777 if (!asus->have_rsts) 778 return (asus->wireless_status & mask) ? 1 : 0; 779 780 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 781 NULL, &status); 782 if (ACPI_FAILURE(rv)) { 783 pr_warn("Error reading Wireless status\n"); 784 return -EINVAL; 785 } 786 return !!(status & mask); 787} 788 789/* 790 * WLAN 791 */ 792static int asus_wlan_set(struct asus_laptop *asus, int status) 793{ 794 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 795 pr_warn("Error setting wlan status to %d\n", status); 796 return -EIO; 797 } 798 return 0; 799} 800 801static ssize_t show_wlan(struct device *dev, 802 struct device_attribute *attr, char *buf) 803{ 804 struct asus_laptop *asus = dev_get_drvdata(dev); 805 806 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 807} 808 809static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 810 const char *buf, size_t count) 811{ 812 struct asus_laptop *asus = dev_get_drvdata(dev); 813 814 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 815} 816 817/* 818 * Bluetooth 819 */ 820static int asus_bluetooth_set(struct asus_laptop *asus, int status) 821{ 822 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 823 pr_warn("Error setting bluetooth status to %d\n", status); 824 return -EIO; 825 } 826 return 0; 827} 828 829static ssize_t show_bluetooth(struct device *dev, 830 struct device_attribute *attr, char *buf) 831{ 832 struct asus_laptop *asus = dev_get_drvdata(dev); 833 834 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 835} 836 837static ssize_t store_bluetooth(struct device *dev, 838 struct device_attribute *attr, const char *buf, 839 size_t count) 840{ 841 struct asus_laptop *asus = dev_get_drvdata(dev); 842 843 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 844} 845 846/* 847 * Wimax 848 */ 849static int asus_wimax_set(struct asus_laptop *asus, int status) 850{ 851 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) { 852 pr_warn("Error setting wimax status to %d\n", status); 853 return -EIO; 854 } 855 return 0; 856} 857 858static ssize_t show_wimax(struct device *dev, 859 struct device_attribute *attr, char *buf) 860{ 861 struct asus_laptop *asus = dev_get_drvdata(dev); 862 863 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS)); 864} 865 866static ssize_t store_wimax(struct device *dev, 867 struct device_attribute *attr, const char *buf, 868 size_t count) 869{ 870 struct asus_laptop *asus = dev_get_drvdata(dev); 871 872 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX); 873} 874 875/* 876 * Wwan 877 */ 878static int asus_wwan_set(struct asus_laptop *asus, int status) 879{ 880 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) { 881 pr_warn("Error setting wwan status to %d\n", status); 882 return -EIO; 883 } 884 return 0; 885} 886 887static ssize_t show_wwan(struct device *dev, 888 struct device_attribute *attr, char *buf) 889{ 890 struct asus_laptop *asus = dev_get_drvdata(dev); 891 892 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS)); 893} 894 895static ssize_t store_wwan(struct device *dev, 896 struct device_attribute *attr, const char *buf, 897 size_t count) 898{ 899 struct asus_laptop *asus = dev_get_drvdata(dev); 900 901 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN); 902} 903 904/* 905 * Display 906 */ 907static void asus_set_display(struct asus_laptop *asus, int value) 908{ 909 /* no sanity check needed for now */ 910 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 911 pr_warn("Error setting display\n"); 912 return; 913} 914 915/* 916 * Experimental support for display switching. As of now: 1 should activate 917 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 918 * Any combination (bitwise) of these will suffice. I never actually tested 4 919 * displays hooked up simultaneously, so be warned. See the acpi4asus README 920 * for more info. 921 */ 922static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 923 const char *buf, size_t count) 924{ 925 struct asus_laptop *asus = dev_get_drvdata(dev); 926 int rv, value; 927 928 rv = parse_arg(buf, count, &value); 929 if (rv > 0) 930 asus_set_display(asus, value); 931 return rv; 932} 933 934/* 935 * Light Sens 936 */ 937static void asus_als_switch(struct asus_laptop *asus, int value) 938{ 939 int ret; 940 941 if (asus->is_pega_lucid) { 942 ret = asus_pega_lucid_set(asus, PEGA_ALS, value); 943 if (!ret) 944 ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value); 945 } else { 946 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value); 947 } 948 if (ret) 949 pr_warning("Error setting light sensor switch\n"); 950 951 asus->light_switch = value; 952} 953 954static ssize_t show_lssw(struct device *dev, 955 struct device_attribute *attr, char *buf) 956{ 957 struct asus_laptop *asus = dev_get_drvdata(dev); 958 959 return sprintf(buf, "%d\n", asus->light_switch); 960} 961 962static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 963 const char *buf, size_t count) 964{ 965 struct asus_laptop *asus = dev_get_drvdata(dev); 966 int rv, value; 967 968 rv = parse_arg(buf, count, &value); 969 if (rv > 0) 970 asus_als_switch(asus, value ? 1 : 0); 971 972 return rv; 973} 974 975static void asus_als_level(struct asus_laptop *asus, int value) 976{ 977 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 978 pr_warn("Error setting light sensor level\n"); 979 asus->light_level = value; 980} 981 982static ssize_t show_lslvl(struct device *dev, 983 struct device_attribute *attr, char *buf) 984{ 985 struct asus_laptop *asus = dev_get_drvdata(dev); 986 987 return sprintf(buf, "%d\n", asus->light_level); 988} 989 990static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 991 const char *buf, size_t count) 992{ 993 struct asus_laptop *asus = dev_get_drvdata(dev); 994 int rv, value; 995 996 rv = parse_arg(buf, count, &value); 997 if (rv > 0) { 998 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 999 /* 0 <= value <= 15 */ 1000 asus_als_level(asus, value); 1001 } 1002 1003 return rv; 1004} 1005 1006static int pega_int_read(struct asus_laptop *asus, int arg, int *result) 1007{ 1008 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1009 int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg, 1010 &buffer); 1011 if (!err) { 1012 union acpi_object *obj = buffer.pointer; 1013 if (obj && obj->type == ACPI_TYPE_INTEGER) 1014 *result = obj->integer.value; 1015 else 1016 err = -EIO; 1017 } 1018 return err; 1019} 1020 1021static ssize_t show_lsvalue(struct device *dev, 1022 struct device_attribute *attr, char *buf) 1023{ 1024 struct asus_laptop *asus = dev_get_drvdata(dev); 1025 int err, hi, lo; 1026 1027 err = pega_int_read(asus, PEGA_READ_ALS_H, &hi); 1028 if (!err) 1029 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo); 1030 if (!err) 1031 return sprintf(buf, "%d\n", 10 * hi + lo); 1032 return err; 1033} 1034 1035/* 1036 * GPS 1037 */ 1038static int asus_gps_status(struct asus_laptop *asus) 1039{ 1040 unsigned long long status; 1041 acpi_status rv = AE_OK; 1042 1043 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1044 NULL, &status); 1045 if (ACPI_FAILURE(rv)) { 1046 pr_warn("Error reading GPS status\n"); 1047 return -ENODEV; 1048 } 1049 return !!status; 1050} 1051 1052static int asus_gps_switch(struct asus_laptop *asus, int status) 1053{ 1054 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1055 1056 if (write_acpi_int(asus->handle, meth, 0x02)) 1057 return -ENODEV; 1058 return 0; 1059} 1060 1061static ssize_t show_gps(struct device *dev, 1062 struct device_attribute *attr, char *buf) 1063{ 1064 struct asus_laptop *asus = dev_get_drvdata(dev); 1065 1066 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1067} 1068 1069static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1070 const char *buf, size_t count) 1071{ 1072 struct asus_laptop *asus = dev_get_drvdata(dev); 1073 int rv, value; 1074 int ret; 1075 1076 rv = parse_arg(buf, count, &value); 1077 if (rv <= 0) 1078 return -EINVAL; 1079 ret = asus_gps_switch(asus, !!value); 1080 if (ret) 1081 return ret; 1082 rfkill_set_sw_state(asus->gps_rfkill, !value); 1083 return rv; 1084} 1085 1086/* 1087 * rfkill 1088 */ 1089static int asus_gps_rfkill_set(void *data, bool blocked) 1090{ 1091 struct asus_laptop *asus = data; 1092 1093 return asus_gps_switch(asus, !blocked); 1094} 1095 1096static const struct rfkill_ops asus_gps_rfkill_ops = { 1097 .set_block = asus_gps_rfkill_set, 1098}; 1099 1100static void asus_rfkill_exit(struct asus_laptop *asus) 1101{ 1102 if (asus->gps_rfkill) { 1103 rfkill_unregister(asus->gps_rfkill); 1104 rfkill_destroy(asus->gps_rfkill); 1105 asus->gps_rfkill = NULL; 1106 } 1107} 1108 1109static int asus_rfkill_init(struct asus_laptop *asus) 1110{ 1111 int result; 1112 1113 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1114 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1115 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1116 return 0; 1117 1118 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1119 RFKILL_TYPE_GPS, 1120 &asus_gps_rfkill_ops, asus); 1121 if (!asus->gps_rfkill) 1122 return -EINVAL; 1123 1124 result = rfkill_register(asus->gps_rfkill); 1125 if (result) { 1126 rfkill_destroy(asus->gps_rfkill); 1127 asus->gps_rfkill = NULL; 1128 } 1129 1130 return result; 1131} 1132 1133/* 1134 * Input device (i.e. hotkeys) 1135 */ 1136static void asus_input_notify(struct asus_laptop *asus, int event) 1137{ 1138 if (asus->inputdev) 1139 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1140} 1141 1142static int asus_input_init(struct asus_laptop *asus) 1143{ 1144 struct input_dev *input; 1145 int error; 1146 1147 input = input_allocate_device(); 1148 if (!input) { 1149 pr_info("Unable to allocate input device\n"); 1150 return -ENOMEM; 1151 } 1152 input->name = "Asus Laptop extra buttons"; 1153 input->phys = ASUS_LAPTOP_FILE "/input0"; 1154 input->id.bustype = BUS_HOST; 1155 input->dev.parent = &asus->platform_device->dev; 1156 1157 error = sparse_keymap_setup(input, asus_keymap, NULL); 1158 if (error) { 1159 pr_err("Unable to setup input device keymap\n"); 1160 goto err_free_dev; 1161 } 1162 error = input_register_device(input); 1163 if (error) { 1164 pr_info("Unable to register input device\n"); 1165 goto err_free_keymap; 1166 } 1167 1168 asus->inputdev = input; 1169 return 0; 1170 1171err_free_keymap: 1172 sparse_keymap_free(input); 1173err_free_dev: 1174 input_free_device(input); 1175 return error; 1176} 1177 1178static void asus_input_exit(struct asus_laptop *asus) 1179{ 1180 if (asus->inputdev) { 1181 sparse_keymap_free(asus->inputdev); 1182 input_unregister_device(asus->inputdev); 1183 } 1184 asus->inputdev = NULL; 1185} 1186 1187/* 1188 * ACPI driver 1189 */ 1190static void asus_acpi_notify(struct acpi_device *device, u32 event) 1191{ 1192 struct asus_laptop *asus = acpi_driver_data(device); 1193 u16 count; 1194 1195 /* TODO Find a better way to handle events count. */ 1196 count = asus->event_count[event % 128]++; 1197 acpi_bus_generate_proc_event(asus->device, event, count); 1198 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1199 dev_name(&asus->device->dev), event, 1200 count); 1201 1202 /* Brightness events are special */ 1203 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1204 1205 /* Ignore them completely if the acpi video driver is used */ 1206 if (asus->backlight_device != NULL) { 1207 /* Update the backlight device. */ 1208 asus_backlight_notify(asus); 1209 } 1210 return ; 1211 } 1212 asus_input_notify(asus, event); 1213} 1214 1215static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL); 1216static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan); 1217static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, 1218 show_bluetooth, store_bluetooth); 1219static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax); 1220static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan); 1221static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp); 1222static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd); 1223static DEVICE_ATTR(ls_value, S_IRUGO, show_lsvalue, NULL); 1224static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl); 1225static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw); 1226static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps); 1227 1228static struct attribute *asus_attributes[] = { 1229 &dev_attr_infos.attr, 1230 &dev_attr_wlan.attr, 1231 &dev_attr_bluetooth.attr, 1232 &dev_attr_wimax.attr, 1233 &dev_attr_wwan.attr, 1234 &dev_attr_display.attr, 1235 &dev_attr_ledd.attr, 1236 &dev_attr_ls_value.attr, 1237 &dev_attr_ls_level.attr, 1238 &dev_attr_ls_switch.attr, 1239 &dev_attr_gps.attr, 1240 NULL 1241}; 1242 1243static mode_t asus_sysfs_is_visible(struct kobject *kobj, 1244 struct attribute *attr, 1245 int idx) 1246{ 1247 struct device *dev = container_of(kobj, struct device, kobj); 1248 struct platform_device *pdev = to_platform_device(dev); 1249 struct asus_laptop *asus = platform_get_drvdata(pdev); 1250 acpi_handle handle = asus->handle; 1251 bool supported; 1252 1253 if (asus->is_pega_lucid) { 1254 /* no ls_level interface on the Lucid */ 1255 if (attr == &dev_attr_ls_switch.attr) 1256 supported = true; 1257 else if (attr == &dev_attr_ls_level.attr) 1258 supported = false; 1259 else 1260 goto normal; 1261 1262 return supported; 1263 } 1264 1265normal: 1266 if (attr == &dev_attr_wlan.attr) { 1267 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL); 1268 1269 } else if (attr == &dev_attr_bluetooth.attr) { 1270 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL); 1271 1272 } else if (attr == &dev_attr_display.attr) { 1273 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL); 1274 1275 } else if (attr == &dev_attr_wimax.attr) { 1276 supported = 1277 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL); 1278 1279 } else if (attr == &dev_attr_wwan.attr) { 1280 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL); 1281 1282 } else if (attr == &dev_attr_ledd.attr) { 1283 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL); 1284 1285 } else if (attr == &dev_attr_ls_switch.attr || 1286 attr == &dev_attr_ls_level.attr) { 1287 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) && 1288 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL); 1289 } else if (attr == &dev_attr_ls_value.attr) { 1290 supported = asus->is_pega_lucid; 1291 } else if (attr == &dev_attr_gps.attr) { 1292 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) && 1293 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) && 1294 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL); 1295 } else { 1296 supported = true; 1297 } 1298 1299 return supported ? attr->mode : 0; 1300} 1301 1302 1303static const struct attribute_group asus_attr_group = { 1304 .is_visible = asus_sysfs_is_visible, 1305 .attrs = asus_attributes, 1306}; 1307 1308static int asus_platform_init(struct asus_laptop *asus) 1309{ 1310 int result; 1311 1312 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1313 if (!asus->platform_device) 1314 return -ENOMEM; 1315 platform_set_drvdata(asus->platform_device, asus); 1316 1317 result = platform_device_add(asus->platform_device); 1318 if (result) 1319 goto fail_platform_device; 1320 1321 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1322 &asus_attr_group); 1323 if (result) 1324 goto fail_sysfs; 1325 1326 return 0; 1327 1328fail_sysfs: 1329 platform_device_del(asus->platform_device); 1330fail_platform_device: 1331 platform_device_put(asus->platform_device); 1332 return result; 1333} 1334 1335static void asus_platform_exit(struct asus_laptop *asus) 1336{ 1337 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group); 1338 platform_device_unregister(asus->platform_device); 1339} 1340 1341static struct platform_driver platform_driver = { 1342 .driver = { 1343 .name = ASUS_LAPTOP_FILE, 1344 .owner = THIS_MODULE, 1345 } 1346}; 1347 1348/* 1349 * This function is used to initialize the context with right values. In this 1350 * method, we can make all the detection we want, and modify the asus_laptop 1351 * struct 1352 */ 1353static int asus_laptop_get_info(struct asus_laptop *asus) 1354{ 1355 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1356 union acpi_object *model = NULL; 1357 unsigned long long bsts_result, hwrs_result; 1358 char *string = NULL; 1359 acpi_status status; 1360 1361 /* 1362 * Get DSDT headers early enough to allow for differentiating between 1363 * models, but late enough to allow acpi_bus_register_driver() to fail 1364 * before doing anything ACPI-specific. Should we encounter a machine, 1365 * which needs special handling (i.e. its hotkey device has a different 1366 * HID), this bit will be moved. 1367 */ 1368 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1369 if (ACPI_FAILURE(status)) 1370 pr_warn("Couldn't get the DSDT table header\n"); 1371 1372 /* We have to write 0 on init this far for all ASUS models */ 1373 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1374 pr_err("Hotkey initialization failed\n"); 1375 return -ENODEV; 1376 } 1377 1378 /* This needs to be called for some laptops to init properly */ 1379 status = 1380 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1381 if (ACPI_FAILURE(status)) 1382 pr_warn("Error calling BSTS\n"); 1383 else if (bsts_result) 1384 pr_notice("BSTS called, 0x%02x returned\n", 1385 (uint) bsts_result); 1386 1387 /* This too ... */ 1388 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1389 pr_err("Error calling CWAP(%d)\n", wapf); 1390 /* 1391 * Try to match the object returned by INIT to the specific model. 1392 * Handle every possible object (or the lack of thereof) the DSDT 1393 * writers might throw at us. When in trouble, we pass NULL to 1394 * asus_model_match() and try something completely different. 1395 */ 1396 if (buffer.pointer) { 1397 model = buffer.pointer; 1398 switch (model->type) { 1399 case ACPI_TYPE_STRING: 1400 string = model->string.pointer; 1401 break; 1402 case ACPI_TYPE_BUFFER: 1403 string = model->buffer.pointer; 1404 break; 1405 default: 1406 string = ""; 1407 break; 1408 } 1409 } 1410 asus->name = kstrdup(string, GFP_KERNEL); 1411 if (!asus->name) { 1412 kfree(buffer.pointer); 1413 return -ENOMEM; 1414 } 1415 1416 if (*string) 1417 pr_notice(" %s model detected\n", string); 1418 1419 /* 1420 * The HWRS method return informations about the hardware. 1421 * 0x80 bit is for WLAN, 0x100 for Bluetooth, 1422 * 0x40 for WWAN, 0x10 for WIMAX. 1423 * The significance of others is yet to be found. 1424 */ 1425 status = 1426 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1427 if (!ACPI_FAILURE(status)) 1428 pr_notice(" HRWS returned %x", (int)hwrs_result); 1429 1430 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1431 asus->have_rsts = true; 1432 1433 kfree(model); 1434 1435 return AE_OK; 1436} 1437 1438static int __devinit asus_acpi_init(struct asus_laptop *asus) 1439{ 1440 int result = 0; 1441 1442 result = acpi_bus_get_status(asus->device); 1443 if (result) 1444 return result; 1445 if (!asus->device->status.present) { 1446 pr_err("Hotkey device not present, aborting\n"); 1447 return -ENODEV; 1448 } 1449 1450 result = asus_laptop_get_info(asus); 1451 if (result) 1452 return result; 1453 1454 /* WLED and BLED are on by default */ 1455 if (bluetooth_status >= 0) 1456 asus_bluetooth_set(asus, !!bluetooth_status); 1457 1458 if (wlan_status >= 0) 1459 asus_wlan_set(asus, !!wlan_status); 1460 1461 if (wimax_status >= 0) 1462 asus_wimax_set(asus, !!wimax_status); 1463 1464 if (wwan_status >= 0) 1465 asus_wwan_set(asus, !!wwan_status); 1466 1467 /* Keyboard Backlight is on by default */ 1468 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1469 asus_kled_set(asus, 1); 1470 1471 /* LED display is off by default */ 1472 asus->ledd_status = 0xFFF; 1473 1474 /* Set initial values of light sensor and level */ 1475 asus->light_switch = 0; /* Default to light sensor disabled */ 1476 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1477 1478 if (asus->is_pega_lucid) { 1479 asus_als_switch(asus, asus->light_switch); 1480 } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1481 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1482 asus_als_switch(asus, asus->light_switch); 1483 asus_als_level(asus, asus->light_level); 1484 } 1485 1486 return result; 1487} 1488 1489static void __devinit asus_dmi_check(void) 1490{ 1491 const char *model; 1492 1493 model = dmi_get_system_info(DMI_PRODUCT_NAME); 1494 if (!model) 1495 return; 1496 1497 /* On L1400B WLED control the sound card, don't mess with it ... */ 1498 if (strncmp(model, "L1400B", 6) == 0) { 1499 wlan_status = -1; 1500 } 1501} 1502 1503static bool asus_device_present; 1504 1505static int __devinit asus_acpi_add(struct acpi_device *device) 1506{ 1507 struct asus_laptop *asus; 1508 int result; 1509 1510 pr_notice("Asus Laptop Support version %s\n", 1511 ASUS_LAPTOP_VERSION); 1512 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1513 if (!asus) 1514 return -ENOMEM; 1515 asus->handle = device->handle; 1516 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1517 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1518 device->driver_data = asus; 1519 asus->device = device; 1520 1521 asus_dmi_check(); 1522 1523 result = asus_acpi_init(asus); 1524 if (result) 1525 goto fail_platform; 1526 1527 /* 1528 * Need platform type detection first, then the platform 1529 * device. It is used as a parent for the sub-devices below. 1530 */ 1531 asus->is_pega_lucid = asus_check_pega_lucid(asus); 1532 result = asus_platform_init(asus); 1533 if (result) 1534 goto fail_platform; 1535 1536 if (!acpi_video_backlight_support()) { 1537 result = asus_backlight_init(asus); 1538 if (result) 1539 goto fail_backlight; 1540 } else 1541 pr_info("Backlight controlled by ACPI video driver\n"); 1542 1543 result = asus_input_init(asus); 1544 if (result) 1545 goto fail_input; 1546 1547 result = asus_led_init(asus); 1548 if (result) 1549 goto fail_led; 1550 1551 result = asus_rfkill_init(asus); 1552 if (result) 1553 goto fail_rfkill; 1554 1555 asus_device_present = true; 1556 return 0; 1557 1558fail_rfkill: 1559 asus_led_exit(asus); 1560fail_led: 1561 asus_input_exit(asus); 1562fail_input: 1563 asus_backlight_exit(asus); 1564fail_backlight: 1565 asus_platform_exit(asus); 1566fail_platform: 1567 kfree(asus->name); 1568 kfree(asus); 1569 1570 return result; 1571} 1572 1573static int asus_acpi_remove(struct acpi_device *device, int type) 1574{ 1575 struct asus_laptop *asus = acpi_driver_data(device); 1576 1577 asus_backlight_exit(asus); 1578 asus_rfkill_exit(asus); 1579 asus_led_exit(asus); 1580 asus_input_exit(asus); 1581 asus_platform_exit(asus); 1582 1583 kfree(asus->name); 1584 kfree(asus); 1585 return 0; 1586} 1587 1588static const struct acpi_device_id asus_device_ids[] = { 1589 {"ATK0100", 0}, 1590 {"ATK0101", 0}, 1591 {"", 0}, 1592}; 1593MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1594 1595static struct acpi_driver asus_acpi_driver = { 1596 .name = ASUS_LAPTOP_NAME, 1597 .class = ASUS_LAPTOP_CLASS, 1598 .owner = THIS_MODULE, 1599 .ids = asus_device_ids, 1600 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1601 .ops = { 1602 .add = asus_acpi_add, 1603 .remove = asus_acpi_remove, 1604 .notify = asus_acpi_notify, 1605 }, 1606}; 1607 1608static int __init asus_laptop_init(void) 1609{ 1610 int result; 1611 1612 result = platform_driver_register(&platform_driver); 1613 if (result < 0) 1614 return result; 1615 1616 result = acpi_bus_register_driver(&asus_acpi_driver); 1617 if (result < 0) 1618 goto fail_acpi_driver; 1619 if (!asus_device_present) { 1620 result = -ENODEV; 1621 goto fail_no_device; 1622 } 1623 return 0; 1624 1625fail_no_device: 1626 acpi_bus_unregister_driver(&asus_acpi_driver); 1627fail_acpi_driver: 1628 platform_driver_unregister(&platform_driver); 1629 return result; 1630} 1631 1632static void __exit asus_laptop_exit(void) 1633{ 1634 acpi_bus_unregister_driver(&asus_acpi_driver); 1635 platform_driver_unregister(&platform_driver); 1636} 1637 1638module_init(asus_laptop_init); 1639module_exit(asus_laptop_exit); 1640