asus-laptop.c revision 3b81cf9d558c57406b4ed9b0d2639113d1d428b6
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 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 * 23 * The development page for this driver is located at 24 * http://sourceforge.net/projects/acpi4asus/ 25 * 26 * Credits: 27 * Pontus Fuchs - Helper functions, cleanup 28 * Johann Wiesner - Small compile fixes 29 * John Belmonte - ACPI code for Toshiba laptop was a good starting point. 30 * Eric Burghard - LED display support for W1N 31 * Josh Green - Light Sens support 32 * Thomas Tuttle - His first patch for led support was very helpfull 33 * Sam Lin - GPS support 34 */ 35 36#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 37 38#include <linux/kernel.h> 39#include <linux/module.h> 40#include <linux/init.h> 41#include <linux/types.h> 42#include <linux/err.h> 43#include <linux/proc_fs.h> 44#include <linux/backlight.h> 45#include <linux/fb.h> 46#include <linux/leds.h> 47#include <linux/platform_device.h> 48#include <linux/uaccess.h> 49#include <linux/input.h> 50#include <linux/input/sparse-keymap.h> 51#include <linux/rfkill.h> 52#include <linux/slab.h> 53#include <linux/dmi.h> 54#include <acpi/acpi_drivers.h> 55#include <acpi/acpi_bus.h> 56 57#define ASUS_LAPTOP_VERSION "0.42" 58 59#define ASUS_LAPTOP_NAME "Asus Laptop Support" 60#define ASUS_LAPTOP_CLASS "hotkey" 61#define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 62#define ASUS_LAPTOP_FILE KBUILD_MODNAME 63#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 64 65MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 66MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 67MODULE_LICENSE("GPL"); 68 69/* 70 * WAPF defines the behavior of the Fn+Fx wlan key 71 * The significance of values is yet to be found, but 72 * most of the time: 73 * 0x0 will do nothing 74 * 0x1 will allow to control the device with Fn+Fx key. 75 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 76 * 0x5 like 0x1 or 0x4 77 * So, if something doesn't work as you want, just try other values =) 78 */ 79static uint wapf = 1; 80module_param(wapf, uint, 0444); 81MODULE_PARM_DESC(wapf, "WAPF value"); 82 83static int wlan_status = 1; 84static int bluetooth_status = 1; 85static int wimax_status = -1; 86static int wwan_status = -1; 87 88module_param(wlan_status, int, 0444); 89MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot " 90 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 91 "default is 1"); 92 93module_param(bluetooth_status, int, 0444); 94MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 95 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 96 "default is 1"); 97 98module_param(wimax_status, int, 0444); 99MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot " 100 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 101 "default is 1"); 102 103module_param(wwan_status, int, 0444); 104MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot " 105 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 106 "default is 1"); 107 108/* 109 * Some events we use, same for all Asus 110 */ 111#define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */ 112#define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */ 113#define ATKD_BR_MIN ATKD_BR_UP 114#define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */ 115#define ATKD_LCD_ON 0x33 116#define ATKD_LCD_OFF 0x34 117 118/* 119 * Known bits returned by \_SB.ATKD.HWRS 120 */ 121#define WL_HWRS 0x80 122#define BT_HWRS 0x100 123 124/* 125 * Flags for hotk status 126 * WL_ON and BT_ON are also used for wireless_status() 127 */ 128#define WL_RSTS 0x01 /* internal Wifi */ 129#define BT_RSTS 0x02 /* internal Bluetooth */ 130#define WM_RSTS 0x08 /* internal wimax */ 131#define WW_RSTS 0x20 /* internal wwan */ 132 133/* LED */ 134#define METHOD_MLED "MLED" 135#define METHOD_TLED "TLED" 136#define METHOD_RLED "RLED" /* W1JC */ 137#define METHOD_PLED "PLED" /* A7J */ 138#define METHOD_GLED "GLED" /* G1, G2 (probably) */ 139 140/* LEDD */ 141#define METHOD_LEDD "SLCM" 142 143/* 144 * Bluetooth and WLAN 145 * WLED and BLED are not handled like other XLED, because in some dsdt 146 * they also control the WLAN/Bluetooth device. 147 */ 148#define METHOD_WLAN "WLED" 149#define METHOD_BLUETOOTH "BLED" 150 151/* WWAN and WIMAX */ 152#define METHOD_WWAN "GSMC" 153#define METHOD_WIMAX "WMXC" 154 155#define METHOD_WL_STATUS "RSTS" 156 157/* Brightness */ 158#define METHOD_BRIGHTNESS_SET "SPLV" 159#define METHOD_BRIGHTNESS_GET "GPLV" 160 161/* Display */ 162#define METHOD_SWITCH_DISPLAY "SDSP" 163 164#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 165#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 166 167/* GPS */ 168/* R2H use different handle for GPS on/off */ 169#define METHOD_GPS_ON "SDON" 170#define METHOD_GPS_OFF "SDOF" 171#define METHOD_GPS_STATUS "GPST" 172 173/* Keyboard light */ 174#define METHOD_KBD_LIGHT_SET "SLKB" 175#define METHOD_KBD_LIGHT_GET "GLKB" 176 177/* 178 * Define a specific led structure to keep the main structure clean 179 */ 180struct asus_led { 181 int wk; 182 struct work_struct work; 183 struct led_classdev led; 184 struct asus_laptop *asus; 185 const char *method; 186}; 187 188/* 189 * This is the main structure, we can use it to store anything interesting 190 * about the hotk device 191 */ 192struct asus_laptop { 193 char *name; /* laptop name */ 194 195 struct acpi_table_header *dsdt_info; 196 struct platform_device *platform_device; 197 struct acpi_device *device; /* the device we are in */ 198 struct backlight_device *backlight_device; 199 200 struct input_dev *inputdev; 201 struct key_entry *keymap; 202 203 struct asus_led mled; 204 struct asus_led tled; 205 struct asus_led rled; 206 struct asus_led pled; 207 struct asus_led gled; 208 struct asus_led kled; 209 struct workqueue_struct *led_workqueue; 210 211 int wireless_status; 212 bool have_rsts; 213 214 struct rfkill *gps_rfkill; 215 216 acpi_handle handle; /* the handle of the hotk device */ 217 u32 ledd_status; /* status of the LED display */ 218 u8 light_level; /* light sensor level */ 219 u8 light_switch; /* light sensor switch value */ 220 u16 event_count[128]; /* count for each event TODO make this better */ 221}; 222 223static const struct key_entry asus_keymap[] = { 224 /* Lenovo SL Specific keycodes */ 225 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 226 {KE_KEY, 0x05, { KEY_WLAN } }, 227 {KE_KEY, 0x08, { KEY_F13 } }, 228 {KE_KEY, 0x17, { KEY_ZOOM } }, 229 {KE_KEY, 0x1f, { KEY_BATTERY } }, 230 /* End of Lenovo SL Specific keycodes */ 231 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 232 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 233 {KE_KEY, 0x32, { KEY_MUTE } }, 234 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } }, 235 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } }, 236 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 237 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 238 {KE_KEY, 0x43, { KEY_STOPCD } }, 239 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 240 {KE_KEY, 0x4c, { KEY_MEDIA } }, 241 {KE_KEY, 0x50, { KEY_EMAIL } }, 242 {KE_KEY, 0x51, { KEY_WWW } }, 243 {KE_KEY, 0x55, { KEY_CALC } }, 244 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 245 {KE_KEY, 0x5D, { KEY_WLAN } }, 246 {KE_KEY, 0x5E, { KEY_WLAN } }, 247 {KE_KEY, 0x5F, { KEY_WLAN } }, 248 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } }, 249 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, 250 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, 251 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, 252 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */ 253 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, 254 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, 255 {KE_KEY, 0x82, { KEY_CAMERA } }, 256 {KE_KEY, 0x88, { KEY_WLAN } }, 257 {KE_KEY, 0x8A, { KEY_PROG1 } }, 258 {KE_KEY, 0x95, { KEY_MEDIA } }, 259 {KE_KEY, 0x99, { KEY_PHONE } }, 260 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } }, 261 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } }, 262 {KE_KEY, 0xb5, { KEY_CALC } }, 263 {KE_END, 0}, 264}; 265 266 267/* 268 * This function evaluates an ACPI method, given an int as parameter, the 269 * method is searched within the scope of the handle, can be NULL. The output 270 * of the method is written is output, which can also be NULL 271 * 272 * returns 0 if write is successful, -1 else. 273 */ 274static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 275 struct acpi_buffer *output) 276{ 277 struct acpi_object_list params; /* list of input parameters (an int) */ 278 union acpi_object in_obj; /* the only param we use */ 279 acpi_status status; 280 281 if (!handle) 282 return -1; 283 284 params.count = 1; 285 params.pointer = &in_obj; 286 in_obj.type = ACPI_TYPE_INTEGER; 287 in_obj.integer.value = val; 288 289 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 290 if (status == AE_OK) 291 return 0; 292 else 293 return -1; 294} 295 296static int write_acpi_int(acpi_handle handle, const char *method, int val) 297{ 298 return write_acpi_int_ret(handle, method, val, NULL); 299} 300 301static int acpi_check_handle(acpi_handle handle, const char *method, 302 acpi_handle *ret) 303{ 304 acpi_status status; 305 306 if (method == NULL) 307 return -ENODEV; 308 309 if (ret) 310 status = acpi_get_handle(handle, (char *)method, 311 ret); 312 else { 313 acpi_handle dummy; 314 315 status = acpi_get_handle(handle, (char *)method, 316 &dummy); 317 } 318 319 if (status != AE_OK) { 320 if (ret) 321 pr_warning("Error finding %s\n", method); 322 return -ENODEV; 323 } 324 return 0; 325} 326 327/* Generic LED function */ 328static int asus_led_set(struct asus_laptop *asus, const char *method, 329 int value) 330{ 331 if (!strcmp(method, METHOD_MLED)) 332 value = !value; 333 else if (!strcmp(method, METHOD_GLED)) 334 value = !value + 1; 335 else 336 value = !!value; 337 338 return write_acpi_int(asus->handle, method, value); 339} 340 341/* 342 * LEDs 343 */ 344/* /sys/class/led handlers */ 345static void asus_led_cdev_set(struct led_classdev *led_cdev, 346 enum led_brightness value) 347{ 348 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 349 struct asus_laptop *asus = led->asus; 350 351 led->wk = !!value; 352 queue_work(asus->led_workqueue, &led->work); 353} 354 355static void asus_led_cdev_update(struct work_struct *work) 356{ 357 struct asus_led *led = container_of(work, struct asus_led, work); 358 struct asus_laptop *asus = led->asus; 359 360 asus_led_set(asus, led->method, led->wk); 361} 362 363static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 364{ 365 return led_cdev->brightness; 366} 367 368/* 369 * Keyboard backlight (also a LED) 370 */ 371static int asus_kled_lvl(struct asus_laptop *asus) 372{ 373 unsigned long long kblv; 374 struct acpi_object_list params; 375 union acpi_object in_obj; 376 acpi_status rv; 377 378 params.count = 1; 379 params.pointer = &in_obj; 380 in_obj.type = ACPI_TYPE_INTEGER; 381 in_obj.integer.value = 2; 382 383 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 384 ¶ms, &kblv); 385 if (ACPI_FAILURE(rv)) { 386 pr_warning("Error reading kled level\n"); 387 return -ENODEV; 388 } 389 return kblv; 390} 391 392static int asus_kled_set(struct asus_laptop *asus, int kblv) 393{ 394 if (kblv > 0) 395 kblv = (1 << 7) | (kblv & 0x7F); 396 else 397 kblv = 0; 398 399 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 400 pr_warning("Keyboard LED display write failed\n"); 401 return -EINVAL; 402 } 403 return 0; 404} 405 406static void asus_kled_cdev_set(struct led_classdev *led_cdev, 407 enum led_brightness value) 408{ 409 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 410 struct asus_laptop *asus = led->asus; 411 412 led->wk = value; 413 queue_work(asus->led_workqueue, &led->work); 414} 415 416static void asus_kled_cdev_update(struct work_struct *work) 417{ 418 struct asus_led *led = container_of(work, struct asus_led, work); 419 struct asus_laptop *asus = led->asus; 420 421 asus_kled_set(asus, led->wk); 422} 423 424static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 425{ 426 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 427 struct asus_laptop *asus = led->asus; 428 429 return asus_kled_lvl(asus); 430} 431 432static void asus_led_exit(struct asus_laptop *asus) 433{ 434 if (asus->mled.led.dev) 435 led_classdev_unregister(&asus->mled.led); 436 if (asus->tled.led.dev) 437 led_classdev_unregister(&asus->tled.led); 438 if (asus->pled.led.dev) 439 led_classdev_unregister(&asus->pled.led); 440 if (asus->rled.led.dev) 441 led_classdev_unregister(&asus->rled.led); 442 if (asus->gled.led.dev) 443 led_classdev_unregister(&asus->gled.led); 444 if (asus->kled.led.dev) 445 led_classdev_unregister(&asus->kled.led); 446 if (asus->led_workqueue) { 447 destroy_workqueue(asus->led_workqueue); 448 asus->led_workqueue = NULL; 449 } 450} 451 452/* Ugly macro, need to fix that later */ 453static int asus_led_register(struct asus_laptop *asus, 454 struct asus_led *led, 455 const char *name, const char *method) 456{ 457 struct led_classdev *led_cdev = &led->led; 458 459 if (!method || acpi_check_handle(asus->handle, method, NULL)) 460 return 0; /* Led not present */ 461 462 led->asus = asus; 463 led->method = method; 464 465 INIT_WORK(&led->work, asus_led_cdev_update); 466 led_cdev->name = name; 467 led_cdev->brightness_set = asus_led_cdev_set; 468 led_cdev->brightness_get = asus_led_cdev_get; 469 led_cdev->max_brightness = 1; 470 return led_classdev_register(&asus->platform_device->dev, led_cdev); 471} 472 473static int asus_led_init(struct asus_laptop *asus) 474{ 475 int r; 476 477 /* 478 * Functions that actually update the LED's are called from a 479 * workqueue. By doing this as separate work rather than when the LED 480 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 481 * potentially bad time, such as a timer interrupt. 482 */ 483 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 484 if (!asus->led_workqueue) 485 return -ENOMEM; 486 487 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 488 if (r) 489 goto error; 490 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 491 if (r) 492 goto error; 493 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 494 if (r) 495 goto error; 496 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 497 if (r) 498 goto error; 499 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 500 if (r) 501 goto error; 502 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 503 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 504 struct asus_led *led = &asus->kled; 505 struct led_classdev *cdev = &led->led; 506 507 led->asus = asus; 508 509 INIT_WORK(&led->work, asus_kled_cdev_update); 510 cdev->name = "asus::kbd_backlight"; 511 cdev->brightness_set = asus_kled_cdev_set; 512 cdev->brightness_get = asus_kled_cdev_get; 513 cdev->max_brightness = 3; 514 r = led_classdev_register(&asus->platform_device->dev, cdev); 515 } 516error: 517 if (r) 518 asus_led_exit(asus); 519 return r; 520} 521 522/* 523 * Backlight device 524 */ 525static int asus_read_brightness(struct backlight_device *bd) 526{ 527 struct asus_laptop *asus = bl_get_data(bd); 528 unsigned long long value; 529 acpi_status rv = AE_OK; 530 531 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 532 NULL, &value); 533 if (ACPI_FAILURE(rv)) 534 pr_warning("Error reading brightness\n"); 535 536 return value; 537} 538 539static int asus_set_brightness(struct backlight_device *bd, int value) 540{ 541 struct asus_laptop *asus = bl_get_data(bd); 542 543 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 544 pr_warning("Error changing brightness\n"); 545 return -EIO; 546 } 547 return 0; 548} 549 550static int update_bl_status(struct backlight_device *bd) 551{ 552 int value = bd->props.brightness; 553 554 return asus_set_brightness(bd, value); 555} 556 557static const struct backlight_ops asusbl_ops = { 558 .get_brightness = asus_read_brightness, 559 .update_status = update_bl_status, 560}; 561 562static int asus_backlight_notify(struct asus_laptop *asus) 563{ 564 struct backlight_device *bd = asus->backlight_device; 565 int old = bd->props.brightness; 566 567 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 568 569 return old; 570} 571 572static int asus_backlight_init(struct asus_laptop *asus) 573{ 574 struct backlight_device *bd; 575 struct backlight_properties props; 576 577 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) || 578 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL)) 579 return 0; 580 581 memset(&props, 0, sizeof(struct backlight_properties)); 582 props.max_brightness = 15; 583 props.type = BACKLIGHT_PLATFORM; 584 585 bd = backlight_device_register(ASUS_LAPTOP_FILE, 586 &asus->platform_device->dev, asus, 587 &asusbl_ops, &props); 588 if (IS_ERR(bd)) { 589 pr_err("Could not register asus backlight device\n"); 590 asus->backlight_device = NULL; 591 return PTR_ERR(bd); 592 } 593 594 asus->backlight_device = bd; 595 bd->props.brightness = asus_read_brightness(bd); 596 bd->props.power = FB_BLANK_UNBLANK; 597 backlight_update_status(bd); 598 return 0; 599} 600 601static void asus_backlight_exit(struct asus_laptop *asus) 602{ 603 if (asus->backlight_device) 604 backlight_device_unregister(asus->backlight_device); 605 asus->backlight_device = NULL; 606} 607 608/* 609 * Platform device handlers 610 */ 611 612/* 613 * We write our info in page, we begin at offset off and cannot write more 614 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 615 * number of bytes written in page 616 */ 617static ssize_t show_infos(struct device *dev, 618 struct device_attribute *attr, char *page) 619{ 620 struct asus_laptop *asus = dev_get_drvdata(dev); 621 int len = 0; 622 unsigned long long temp; 623 char buf[16]; /* enough for all info */ 624 acpi_status rv = AE_OK; 625 626 /* 627 * We use the easy way, we don't care of off and count, 628 * so we don't set eof to 1 629 */ 630 631 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 632 len += sprintf(page + len, "Model reference : %s\n", asus->name); 633 /* 634 * The SFUN method probably allows the original driver to get the list 635 * of features supported by a given model. For now, 0x0100 or 0x0800 636 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 637 * The significance of others is yet to be found. 638 */ 639 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 640 if (!ACPI_FAILURE(rv)) 641 len += sprintf(page + len, "SFUN value : %#x\n", 642 (uint) temp); 643 /* 644 * The HWRS method return informations about the hardware. 645 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 646 * The significance of others is yet to be found. 647 * If we don't find the method, we assume the device are present. 648 */ 649 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 650 if (!ACPI_FAILURE(rv)) 651 len += sprintf(page + len, "HRWS value : %#x\n", 652 (uint) temp); 653 /* 654 * Another value for userspace: the ASYM method returns 0x02 for 655 * battery low and 0x04 for battery critical, its readings tend to be 656 * more accurate than those provided by _BST. 657 * Note: since not all the laptops provide this method, errors are 658 * silently ignored. 659 */ 660 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 661 if (!ACPI_FAILURE(rv)) 662 len += sprintf(page + len, "ASYM value : %#x\n", 663 (uint) temp); 664 if (asus->dsdt_info) { 665 snprintf(buf, 16, "%d", asus->dsdt_info->length); 666 len += sprintf(page + len, "DSDT length : %s\n", buf); 667 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 668 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 669 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 670 len += sprintf(page + len, "DSDT revision : %s\n", buf); 671 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 672 len += sprintf(page + len, "OEM id : %s\n", buf); 673 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 674 len += sprintf(page + len, "OEM table id : %s\n", buf); 675 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 676 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 677 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 678 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 679 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 680 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 681 } 682 683 return len; 684} 685 686static int parse_arg(const char *buf, unsigned long count, int *val) 687{ 688 if (!count) 689 return 0; 690 if (count > 31) 691 return -EINVAL; 692 if (sscanf(buf, "%i", val) != 1) 693 return -EINVAL; 694 return count; 695} 696 697static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 698 const char *buf, size_t count, 699 const char *method) 700{ 701 int rv, value; 702 int out = 0; 703 704 rv = parse_arg(buf, count, &value); 705 if (rv > 0) 706 out = value ? 1 : 0; 707 708 if (write_acpi_int(asus->handle, method, value)) 709 return -ENODEV; 710 return rv; 711} 712 713/* 714 * LEDD display 715 */ 716static ssize_t show_ledd(struct device *dev, 717 struct device_attribute *attr, char *buf) 718{ 719 struct asus_laptop *asus = dev_get_drvdata(dev); 720 721 return sprintf(buf, "0x%08x\n", asus->ledd_status); 722} 723 724static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 725 const char *buf, size_t count) 726{ 727 struct asus_laptop *asus = dev_get_drvdata(dev); 728 int rv, value; 729 730 rv = parse_arg(buf, count, &value); 731 if (rv > 0) { 732 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) { 733 pr_warning("LED display write failed\n"); 734 return -ENODEV; 735 } 736 asus->ledd_status = (u32) value; 737 } 738 return rv; 739} 740 741/* 742 * Wireless 743 */ 744static int asus_wireless_status(struct asus_laptop *asus, int mask) 745{ 746 unsigned long long status; 747 acpi_status rv = AE_OK; 748 749 if (!asus->have_rsts) 750 return (asus->wireless_status & mask) ? 1 : 0; 751 752 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 753 NULL, &status); 754 if (ACPI_FAILURE(rv)) { 755 pr_warning("Error reading Wireless status\n"); 756 return -EINVAL; 757 } 758 return !!(status & mask); 759} 760 761/* 762 * WLAN 763 */ 764static int asus_wlan_set(struct asus_laptop *asus, int status) 765{ 766 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 767 pr_warning("Error setting wlan status to %d", status); 768 return -EIO; 769 } 770 return 0; 771} 772 773static ssize_t show_wlan(struct device *dev, 774 struct device_attribute *attr, char *buf) 775{ 776 struct asus_laptop *asus = dev_get_drvdata(dev); 777 778 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 779} 780 781static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 782 const char *buf, size_t count) 783{ 784 struct asus_laptop *asus = dev_get_drvdata(dev); 785 786 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 787} 788 789/* 790 * Bluetooth 791 */ 792static int asus_bluetooth_set(struct asus_laptop *asus, int status) 793{ 794 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 795 pr_warning("Error setting bluetooth status to %d", status); 796 return -EIO; 797 } 798 return 0; 799} 800 801static ssize_t show_bluetooth(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, BT_RSTS)); 807} 808 809static ssize_t store_bluetooth(struct device *dev, 810 struct device_attribute *attr, const char *buf, 811 size_t count) 812{ 813 struct asus_laptop *asus = dev_get_drvdata(dev); 814 815 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 816} 817 818/* 819 * Wimax 820 */ 821static int asus_wimax_set(struct asus_laptop *asus, int status) 822{ 823 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) { 824 pr_warning("Error setting wimax status to %d", status); 825 return -EIO; 826 } 827 return 0; 828} 829 830static ssize_t show_wimax(struct device *dev, 831 struct device_attribute *attr, char *buf) 832{ 833 struct asus_laptop *asus = dev_get_drvdata(dev); 834 835 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS)); 836} 837 838static ssize_t store_wimax(struct device *dev, 839 struct device_attribute *attr, const char *buf, 840 size_t count) 841{ 842 struct asus_laptop *asus = dev_get_drvdata(dev); 843 844 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX); 845} 846 847/* 848 * Wwan 849 */ 850static int asus_wwan_set(struct asus_laptop *asus, int status) 851{ 852 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) { 853 pr_warning("Error setting wwan status to %d", status); 854 return -EIO; 855 } 856 return 0; 857} 858 859static ssize_t show_wwan(struct device *dev, 860 struct device_attribute *attr, char *buf) 861{ 862 struct asus_laptop *asus = dev_get_drvdata(dev); 863 864 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS)); 865} 866 867static ssize_t store_wwan(struct device *dev, 868 struct device_attribute *attr, const char *buf, 869 size_t count) 870{ 871 struct asus_laptop *asus = dev_get_drvdata(dev); 872 873 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN); 874} 875 876/* 877 * Display 878 */ 879static void asus_set_display(struct asus_laptop *asus, int value) 880{ 881 /* no sanity check needed for now */ 882 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 883 pr_warning("Error setting display\n"); 884 return; 885} 886 887/* 888 * Experimental support for display switching. As of now: 1 should activate 889 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 890 * Any combination (bitwise) of these will suffice. I never actually tested 4 891 * displays hooked up simultaneously, so be warned. See the acpi4asus README 892 * for more info. 893 */ 894static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 895 const char *buf, size_t count) 896{ 897 struct asus_laptop *asus = dev_get_drvdata(dev); 898 int rv, value; 899 900 rv = parse_arg(buf, count, &value); 901 if (rv > 0) 902 asus_set_display(asus, value); 903 return rv; 904} 905 906/* 907 * Light Sens 908 */ 909static void asus_als_switch(struct asus_laptop *asus, int value) 910{ 911 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value)) 912 pr_warning("Error setting light sensor switch\n"); 913 asus->light_switch = value; 914} 915 916static ssize_t show_lssw(struct device *dev, 917 struct device_attribute *attr, char *buf) 918{ 919 struct asus_laptop *asus = dev_get_drvdata(dev); 920 921 return sprintf(buf, "%d\n", asus->light_switch); 922} 923 924static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 925 const char *buf, size_t count) 926{ 927 struct asus_laptop *asus = dev_get_drvdata(dev); 928 int rv, value; 929 930 rv = parse_arg(buf, count, &value); 931 if (rv > 0) 932 asus_als_switch(asus, value ? 1 : 0); 933 934 return rv; 935} 936 937static void asus_als_level(struct asus_laptop *asus, int value) 938{ 939 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 940 pr_warning("Error setting light sensor level\n"); 941 asus->light_level = value; 942} 943 944static ssize_t show_lslvl(struct device *dev, 945 struct device_attribute *attr, char *buf) 946{ 947 struct asus_laptop *asus = dev_get_drvdata(dev); 948 949 return sprintf(buf, "%d\n", asus->light_level); 950} 951 952static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 953 const char *buf, size_t count) 954{ 955 struct asus_laptop *asus = dev_get_drvdata(dev); 956 int rv, value; 957 958 rv = parse_arg(buf, count, &value); 959 if (rv > 0) { 960 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 961 /* 0 <= value <= 15 */ 962 asus_als_level(asus, value); 963 } 964 965 return rv; 966} 967 968/* 969 * GPS 970 */ 971static int asus_gps_status(struct asus_laptop *asus) 972{ 973 unsigned long long status; 974 acpi_status rv = AE_OK; 975 976 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 977 NULL, &status); 978 if (ACPI_FAILURE(rv)) { 979 pr_warning("Error reading GPS status\n"); 980 return -ENODEV; 981 } 982 return !!status; 983} 984 985static int asus_gps_switch(struct asus_laptop *asus, int status) 986{ 987 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 988 989 if (write_acpi_int(asus->handle, meth, 0x02)) 990 return -ENODEV; 991 return 0; 992} 993 994static ssize_t show_gps(struct device *dev, 995 struct device_attribute *attr, char *buf) 996{ 997 struct asus_laptop *asus = dev_get_drvdata(dev); 998 999 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1000} 1001 1002static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1003 const char *buf, size_t count) 1004{ 1005 struct asus_laptop *asus = dev_get_drvdata(dev); 1006 int rv, value; 1007 int ret; 1008 1009 rv = parse_arg(buf, count, &value); 1010 if (rv <= 0) 1011 return -EINVAL; 1012 ret = asus_gps_switch(asus, !!value); 1013 if (ret) 1014 return ret; 1015 rfkill_set_sw_state(asus->gps_rfkill, !value); 1016 return rv; 1017} 1018 1019/* 1020 * rfkill 1021 */ 1022static int asus_gps_rfkill_set(void *data, bool blocked) 1023{ 1024 struct asus_laptop *asus = data; 1025 1026 return asus_gps_switch(asus, !blocked); 1027} 1028 1029static const struct rfkill_ops asus_gps_rfkill_ops = { 1030 .set_block = asus_gps_rfkill_set, 1031}; 1032 1033static void asus_rfkill_exit(struct asus_laptop *asus) 1034{ 1035 if (asus->gps_rfkill) { 1036 rfkill_unregister(asus->gps_rfkill); 1037 rfkill_destroy(asus->gps_rfkill); 1038 asus->gps_rfkill = NULL; 1039 } 1040} 1041 1042static int asus_rfkill_init(struct asus_laptop *asus) 1043{ 1044 int result; 1045 1046 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1047 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1048 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1049 return 0; 1050 1051 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1052 RFKILL_TYPE_GPS, 1053 &asus_gps_rfkill_ops, asus); 1054 if (!asus->gps_rfkill) 1055 return -EINVAL; 1056 1057 result = rfkill_register(asus->gps_rfkill); 1058 if (result) { 1059 rfkill_destroy(asus->gps_rfkill); 1060 asus->gps_rfkill = NULL; 1061 } 1062 1063 return result; 1064} 1065 1066/* 1067 * Input device (i.e. hotkeys) 1068 */ 1069static void asus_input_notify(struct asus_laptop *asus, int event) 1070{ 1071 if (asus->inputdev) 1072 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1073} 1074 1075static int asus_input_init(struct asus_laptop *asus) 1076{ 1077 struct input_dev *input; 1078 int error; 1079 1080 input = input_allocate_device(); 1081 if (!input) { 1082 pr_info("Unable to allocate input device\n"); 1083 return -ENOMEM; 1084 } 1085 input->name = "Asus Laptop extra buttons"; 1086 input->phys = ASUS_LAPTOP_FILE "/input0"; 1087 input->id.bustype = BUS_HOST; 1088 input->dev.parent = &asus->platform_device->dev; 1089 1090 error = sparse_keymap_setup(input, asus_keymap, NULL); 1091 if (error) { 1092 pr_err("Unable to setup input device keymap\n"); 1093 goto err_free_dev; 1094 } 1095 error = input_register_device(input); 1096 if (error) { 1097 pr_info("Unable to register input device\n"); 1098 goto err_free_keymap; 1099 } 1100 1101 asus->inputdev = input; 1102 return 0; 1103 1104err_free_keymap: 1105 sparse_keymap_free(input); 1106err_free_dev: 1107 input_free_device(input); 1108 return error; 1109} 1110 1111static void asus_input_exit(struct asus_laptop *asus) 1112{ 1113 if (asus->inputdev) { 1114 sparse_keymap_free(asus->inputdev); 1115 input_unregister_device(asus->inputdev); 1116 } 1117 asus->inputdev = NULL; 1118} 1119 1120/* 1121 * ACPI driver 1122 */ 1123static void asus_acpi_notify(struct acpi_device *device, u32 event) 1124{ 1125 struct asus_laptop *asus = acpi_driver_data(device); 1126 u16 count; 1127 1128 /* TODO Find a better way to handle events count. */ 1129 count = asus->event_count[event % 128]++; 1130 acpi_bus_generate_proc_event(asus->device, event, count); 1131 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1132 dev_name(&asus->device->dev), event, 1133 count); 1134 1135 /* Brightness events are special */ 1136 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1137 1138 /* Ignore them completely if the acpi video driver is used */ 1139 if (asus->backlight_device != NULL) { 1140 /* Update the backlight device. */ 1141 asus_backlight_notify(asus); 1142 } 1143 return ; 1144 } 1145 asus_input_notify(asus, event); 1146} 1147 1148static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL); 1149static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan); 1150static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, 1151 show_bluetooth, store_bluetooth); 1152static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax); 1153static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan); 1154static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp); 1155static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd); 1156static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl); 1157static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw); 1158static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps); 1159 1160static struct attribute *asus_attributes[] = { 1161 &dev_attr_infos.attr, 1162 &dev_attr_wlan.attr, 1163 &dev_attr_bluetooth.attr, 1164 &dev_attr_wimax.attr, 1165 &dev_attr_wwan.attr, 1166 &dev_attr_display.attr, 1167 &dev_attr_ledd.attr, 1168 &dev_attr_ls_level.attr, 1169 &dev_attr_ls_switch.attr, 1170 &dev_attr_gps.attr, 1171 NULL 1172}; 1173 1174static mode_t asus_sysfs_is_visible(struct kobject *kobj, 1175 struct attribute *attr, 1176 int idx) 1177{ 1178 struct device *dev = container_of(kobj, struct device, kobj); 1179 struct platform_device *pdev = to_platform_device(dev); 1180 struct asus_laptop *asus = platform_get_drvdata(pdev); 1181 acpi_handle handle = asus->handle; 1182 bool supported; 1183 1184 if (attr == &dev_attr_wlan.attr) { 1185 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL); 1186 1187 } else if (attr == &dev_attr_bluetooth.attr) { 1188 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL); 1189 1190 } else if (attr == &dev_attr_display.attr) { 1191 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL); 1192 1193 } else if (attr == &dev_attr_wimax.attr) { 1194 supported = 1195 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL); 1196 1197 } else if (attr == &dev_attr_wwan.attr) { 1198 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL); 1199 1200 } else if (attr == &dev_attr_ledd.attr) { 1201 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL); 1202 1203 } else if (attr == &dev_attr_ls_switch.attr || 1204 attr == &dev_attr_ls_level.attr) { 1205 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) && 1206 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL); 1207 1208 } else if (attr == &dev_attr_gps.attr) { 1209 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) && 1210 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) && 1211 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL); 1212 } else { 1213 supported = true; 1214 } 1215 1216 return supported ? attr->mode : 0; 1217} 1218 1219 1220static const struct attribute_group asus_attr_group = { 1221 .is_visible = asus_sysfs_is_visible, 1222 .attrs = asus_attributes, 1223}; 1224 1225static int asus_platform_init(struct asus_laptop *asus) 1226{ 1227 int result; 1228 1229 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1230 if (!asus->platform_device) 1231 return -ENOMEM; 1232 platform_set_drvdata(asus->platform_device, asus); 1233 1234 result = platform_device_add(asus->platform_device); 1235 if (result) 1236 goto fail_platform_device; 1237 1238 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1239 &asus_attr_group); 1240 if (result) 1241 goto fail_sysfs; 1242 1243 return 0; 1244 1245fail_sysfs: 1246 platform_device_del(asus->platform_device); 1247fail_platform_device: 1248 platform_device_put(asus->platform_device); 1249 return result; 1250} 1251 1252static void asus_platform_exit(struct asus_laptop *asus) 1253{ 1254 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group); 1255 platform_device_unregister(asus->platform_device); 1256} 1257 1258static struct platform_driver platform_driver = { 1259 .driver = { 1260 .name = ASUS_LAPTOP_FILE, 1261 .owner = THIS_MODULE, 1262 } 1263}; 1264 1265/* 1266 * This function is used to initialize the context with right values. In this 1267 * method, we can make all the detection we want, and modify the asus_laptop 1268 * struct 1269 */ 1270static int asus_laptop_get_info(struct asus_laptop *asus) 1271{ 1272 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1273 union acpi_object *model = NULL; 1274 unsigned long long bsts_result, hwrs_result; 1275 char *string = NULL; 1276 acpi_status status; 1277 1278 /* 1279 * Get DSDT headers early enough to allow for differentiating between 1280 * models, but late enough to allow acpi_bus_register_driver() to fail 1281 * before doing anything ACPI-specific. Should we encounter a machine, 1282 * which needs special handling (i.e. its hotkey device has a different 1283 * HID), this bit will be moved. 1284 */ 1285 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1286 if (ACPI_FAILURE(status)) 1287 pr_warning("Couldn't get the DSDT table header\n"); 1288 1289 /* We have to write 0 on init this far for all ASUS models */ 1290 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1291 pr_err("Hotkey initialization failed\n"); 1292 return -ENODEV; 1293 } 1294 1295 /* This needs to be called for some laptops to init properly */ 1296 status = 1297 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1298 if (ACPI_FAILURE(status)) 1299 pr_warning("Error calling BSTS\n"); 1300 else if (bsts_result) 1301 pr_notice("BSTS called, 0x%02x returned\n", 1302 (uint) bsts_result); 1303 1304 /* This too ... */ 1305 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1306 pr_err("Error calling CWAP(%d)\n", wapf); 1307 /* 1308 * Try to match the object returned by INIT to the specific model. 1309 * Handle every possible object (or the lack of thereof) the DSDT 1310 * writers might throw at us. When in trouble, we pass NULL to 1311 * asus_model_match() and try something completely different. 1312 */ 1313 if (buffer.pointer) { 1314 model = buffer.pointer; 1315 switch (model->type) { 1316 case ACPI_TYPE_STRING: 1317 string = model->string.pointer; 1318 break; 1319 case ACPI_TYPE_BUFFER: 1320 string = model->buffer.pointer; 1321 break; 1322 default: 1323 string = ""; 1324 break; 1325 } 1326 } 1327 asus->name = kstrdup(string, GFP_KERNEL); 1328 if (!asus->name) { 1329 kfree(buffer.pointer); 1330 return -ENOMEM; 1331 } 1332 1333 if (*string) 1334 pr_notice(" %s model detected\n", string); 1335 1336 /* 1337 * The HWRS method return informations about the hardware. 1338 * 0x80 bit is for WLAN, 0x100 for Bluetooth, 1339 * 0x40 for WWAN, 0x10 for WIMAX. 1340 * The significance of others is yet to be found. 1341 */ 1342 status = 1343 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1344 if (!ACPI_FAILURE(status)) 1345 pr_notice(" HRWS returned %x", (int)hwrs_result); 1346 1347 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1348 asus->have_rsts = true; 1349 1350 kfree(model); 1351 1352 return AE_OK; 1353} 1354 1355static int __devinit asus_acpi_init(struct asus_laptop *asus) 1356{ 1357 int result = 0; 1358 1359 result = acpi_bus_get_status(asus->device); 1360 if (result) 1361 return result; 1362 if (!asus->device->status.present) { 1363 pr_err("Hotkey device not present, aborting\n"); 1364 return -ENODEV; 1365 } 1366 1367 result = asus_laptop_get_info(asus); 1368 if (result) 1369 return result; 1370 1371 /* WLED and BLED are on by default */ 1372 if (bluetooth_status >= 0) 1373 asus_bluetooth_set(asus, !!bluetooth_status); 1374 1375 if (wlan_status >= 0) 1376 asus_wlan_set(asus, !!wlan_status); 1377 1378 if (wimax_status >= 0) 1379 asus_wimax_set(asus, !!wimax_status); 1380 1381 if (wwan_status >= 0) 1382 asus_wwan_set(asus, !!wwan_status); 1383 1384 /* Keyboard Backlight is on by default */ 1385 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1386 asus_kled_set(asus, 1); 1387 1388 /* LED display is off by default */ 1389 asus->ledd_status = 0xFFF; 1390 1391 /* Set initial values of light sensor and level */ 1392 asus->light_switch = 0; /* Default to light sensor disabled */ 1393 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1394 1395 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1396 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1397 asus_als_switch(asus, asus->light_switch); 1398 asus_als_level(asus, asus->light_level); 1399 } 1400 1401 return result; 1402} 1403 1404static void __devinit asus_dmi_check(void) 1405{ 1406 const char *model; 1407 1408 model = dmi_get_system_info(DMI_PRODUCT_NAME); 1409 if (!model) 1410 return; 1411 1412 /* On L1400B WLED control the sound card, don't mess with it ... */ 1413 if (strncmp(model, "L1400B", 6) == 0) { 1414 wlan_status = -1; 1415 } 1416} 1417 1418static bool asus_device_present; 1419 1420static int __devinit asus_acpi_add(struct acpi_device *device) 1421{ 1422 struct asus_laptop *asus; 1423 int result; 1424 1425 pr_notice("Asus Laptop Support version %s\n", 1426 ASUS_LAPTOP_VERSION); 1427 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1428 if (!asus) 1429 return -ENOMEM; 1430 asus->handle = device->handle; 1431 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1432 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1433 device->driver_data = asus; 1434 asus->device = device; 1435 1436 asus_dmi_check(); 1437 1438 result = asus_acpi_init(asus); 1439 if (result) 1440 goto fail_platform; 1441 1442 /* 1443 * Register the platform device first. It is used as a parent for the 1444 * sub-devices below. 1445 */ 1446 result = asus_platform_init(asus); 1447 if (result) 1448 goto fail_platform; 1449 1450 if (!acpi_video_backlight_support()) { 1451 result = asus_backlight_init(asus); 1452 if (result) 1453 goto fail_backlight; 1454 } else 1455 pr_info("Backlight controlled by ACPI video driver\n"); 1456 1457 result = asus_input_init(asus); 1458 if (result) 1459 goto fail_input; 1460 1461 result = asus_led_init(asus); 1462 if (result) 1463 goto fail_led; 1464 1465 result = asus_rfkill_init(asus); 1466 if (result) 1467 goto fail_rfkill; 1468 1469 asus_device_present = true; 1470 return 0; 1471 1472fail_rfkill: 1473 asus_led_exit(asus); 1474fail_led: 1475 asus_input_exit(asus); 1476fail_input: 1477 asus_backlight_exit(asus); 1478fail_backlight: 1479 asus_platform_exit(asus); 1480fail_platform: 1481 kfree(asus->name); 1482 kfree(asus); 1483 1484 return result; 1485} 1486 1487static int asus_acpi_remove(struct acpi_device *device, int type) 1488{ 1489 struct asus_laptop *asus = acpi_driver_data(device); 1490 1491 asus_backlight_exit(asus); 1492 asus_rfkill_exit(asus); 1493 asus_led_exit(asus); 1494 asus_input_exit(asus); 1495 asus_platform_exit(asus); 1496 1497 kfree(asus->name); 1498 kfree(asus); 1499 return 0; 1500} 1501 1502static const struct acpi_device_id asus_device_ids[] = { 1503 {"ATK0100", 0}, 1504 {"ATK0101", 0}, 1505 {"", 0}, 1506}; 1507MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1508 1509static struct acpi_driver asus_acpi_driver = { 1510 .name = ASUS_LAPTOP_NAME, 1511 .class = ASUS_LAPTOP_CLASS, 1512 .owner = THIS_MODULE, 1513 .ids = asus_device_ids, 1514 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1515 .ops = { 1516 .add = asus_acpi_add, 1517 .remove = asus_acpi_remove, 1518 .notify = asus_acpi_notify, 1519 }, 1520}; 1521 1522static int __init asus_laptop_init(void) 1523{ 1524 int result; 1525 1526 result = platform_driver_register(&platform_driver); 1527 if (result < 0) 1528 return result; 1529 1530 result = acpi_bus_register_driver(&asus_acpi_driver); 1531 if (result < 0) 1532 goto fail_acpi_driver; 1533 if (!asus_device_present) { 1534 result = -ENODEV; 1535 goto fail_no_device; 1536 } 1537 return 0; 1538 1539fail_no_device: 1540 acpi_bus_unregister_driver(&asus_acpi_driver); 1541fail_acpi_driver: 1542 platform_driver_unregister(&platform_driver); 1543 return result; 1544} 1545 1546static void __exit asus_laptop_exit(void) 1547{ 1548 acpi_bus_unregister_driver(&asus_acpi_driver); 1549 platform_driver_unregister(&platform_driver); 1550} 1551 1552module_init(asus_laptop_init); 1553module_exit(asus_laptop_exit); 1554