asus-laptop.c revision aa9df930d6eabbd8f2439eca6b2f77f81ce425f2
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 <acpi/acpi_drivers.h> 49#include <acpi/acpi_bus.h> 50#include <asm/uaccess.h> 51#include <linux/input.h> 52 53#define ASUS_LAPTOP_VERSION "0.42" 54 55#define ASUS_LAPTOP_NAME "Asus Laptop Support" 56#define ASUS_LAPTOP_CLASS "hotkey" 57#define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 58#define ASUS_LAPTOP_FILE KBUILD_MODNAME 59#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 60 61MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 62MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 63MODULE_LICENSE("GPL"); 64 65/* 66 * WAPF defines the behavior of the Fn+Fx wlan key 67 * The significance of values is yet to be found, but 68 * most of the time: 69 * 0x0 will do nothing 70 * 0x1 will allow to control the device with Fn+Fx key. 71 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 72 * 0x5 like 0x1 or 0x4 73 * So, if something doesn't work as you want, just try other values =) 74 */ 75static uint wapf = 1; 76module_param(wapf, uint, 0644); 77MODULE_PARM_DESC(wapf, "WAPF value"); 78 79static uint wireless_status = 1; 80static uint bluetooth_status = 1; 81 82module_param(wireless_status, uint, 0644); 83MODULE_PARM_DESC(wireless_status, "Set the wireless status on boot " 84 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 85 "default is 1"); 86 87module_param(bluetooth_status, uint, 0644); 88MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 89 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 90 "default is 1"); 91 92/* 93 * Some events we use, same for all Asus 94 */ 95#define ATKD_BR_UP 0x10 96#define ATKD_BR_DOWN 0x20 97#define ATKD_LCD_ON 0x33 98#define ATKD_LCD_OFF 0x34 99 100/* 101 * Known bits returned by \_SB.ATKD.HWRS 102 */ 103#define WL_HWRS 0x80 104#define BT_HWRS 0x100 105 106/* 107 * Flags for hotk status 108 * WL_ON and BT_ON are also used for wireless_status() 109 */ 110#define WL_ON 0x01 /* internal Wifi */ 111#define BT_ON 0x02 /* internal Bluetooth */ 112#define MLED_ON 0x04 /* mail LED */ 113#define TLED_ON 0x08 /* touchpad LED */ 114#define RLED_ON 0x10 /* Record LED */ 115#define PLED_ON 0x20 /* Phone LED */ 116#define GLED_ON 0x40 /* Gaming LED */ 117#define LCD_ON 0x80 /* LCD backlight */ 118#define GPS_ON 0x100 /* GPS */ 119#define KEY_ON 0x200 /* Keyboard backlight */ 120 121#define ASUS_HANDLE(object, paths...) \ 122 static acpi_handle object##_handle = NULL; \ 123 static char *object##_paths[] = { paths } 124 125/* LED */ 126ASUS_HANDLE(mled_set, ASUS_LAPTOP_PREFIX "MLED"); 127ASUS_HANDLE(tled_set, ASUS_LAPTOP_PREFIX "TLED"); 128ASUS_HANDLE(rled_set, ASUS_LAPTOP_PREFIX "RLED"); /* W1JC */ 129ASUS_HANDLE(pled_set, ASUS_LAPTOP_PREFIX "PLED"); /* A7J */ 130ASUS_HANDLE(gled_set, ASUS_LAPTOP_PREFIX "GLED"); /* G1, G2 (probably) */ 131 132/* LEDD */ 133ASUS_HANDLE(ledd_set, ASUS_LAPTOP_PREFIX "SLCM"); 134 135/* 136 * Bluetooth and WLAN 137 * WLED and BLED are not handled like other XLED, because in some dsdt 138 * they also control the WLAN/Bluetooth device. 139 */ 140ASUS_HANDLE(wl_switch, ASUS_LAPTOP_PREFIX "WLED"); 141ASUS_HANDLE(bt_switch, ASUS_LAPTOP_PREFIX "BLED"); 142ASUS_HANDLE(wireless_status, ASUS_LAPTOP_PREFIX "RSTS"); /* All new models */ 143 144/* Brightness */ 145ASUS_HANDLE(brightness_set, ASUS_LAPTOP_PREFIX "SPLV"); 146ASUS_HANDLE(brightness_get, ASUS_LAPTOP_PREFIX "GPLV"); 147 148/* Backlight */ 149ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 150 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 151 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 152 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 153 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 154 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 155 "\\_SB.PCI0.PX40.Q10", /* S1x */ 156 "\\Q10"); /* A2x, L2D, L3D, M2E */ 157 158/* Display */ 159ASUS_HANDLE(display_set, ASUS_LAPTOP_PREFIX "SDSP"); 160ASUS_HANDLE(display_get, 161 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */ 162 "\\_SB.PCI0.P0P1.VGA.GETD", 163 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */ 164 "\\_SB.PCI0.P0P2.VGA.GETD", 165 /* A6V A6Q */ 166 "\\_SB.PCI0.P0P3.VGA.GETD", 167 /* A6T, A6M */ 168 "\\_SB.PCI0.P0PA.VGA.GETD", 169 /* L3C */ 170 "\\_SB.PCI0.PCI1.VGAC.NMAP", 171 /* Z96F */ 172 "\\_SB.PCI0.VGA.GETD", 173 /* A2D */ 174 "\\ACTD", 175 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 176 "\\ADVG", 177 /* P30 */ 178 "\\DNXT", 179 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 180 "\\INFB", 181 /* A3F A6F A3N A3L M6N W3N W6A */ 182 "\\SSTE"); 183 184ASUS_HANDLE(ls_switch, ASUS_LAPTOP_PREFIX "ALSC"); /* Z71A Z71V */ 185ASUS_HANDLE(ls_level, ASUS_LAPTOP_PREFIX "ALSL"); /* Z71A Z71V */ 186 187/* GPS */ 188/* R2H use different handle for GPS on/off */ 189ASUS_HANDLE(gps_on, ASUS_LAPTOP_PREFIX "SDON"); /* R2H */ 190ASUS_HANDLE(gps_off, ASUS_LAPTOP_PREFIX "SDOF"); /* R2H */ 191ASUS_HANDLE(gps_status, ASUS_LAPTOP_PREFIX "GPST"); 192 193/* Keyboard light */ 194ASUS_HANDLE(kled_set, ASUS_LAPTOP_PREFIX "SLKB"); 195ASUS_HANDLE(kled_get, ASUS_LAPTOP_PREFIX "GLKB"); 196 197/* 198 * Define a specific led structure to keep the main structure clean 199 */ 200#define ASUS_DEFINE_LED(object) \ 201 int object##_wk; \ 202 struct work_struct object##_work; \ 203 struct led_classdev object; 204 205 206#define led_to_asus(led_cdev, led) \ 207 container_of(container_of(led_cdev, struct asus_laptop_leds, \ 208 led), \ 209 struct asus_laptop, leds) 210#define work_to_asus(work, led) \ 211 container_of(container_of(work, struct asus_laptop_leds, \ 212 led##_work), \ 213 struct asus_laptop, leds) 214 215struct asus_laptop_leds { 216 ASUS_DEFINE_LED(mled) 217 ASUS_DEFINE_LED(tled) 218 ASUS_DEFINE_LED(rled) 219 ASUS_DEFINE_LED(pled) 220 ASUS_DEFINE_LED(gled) 221 ASUS_DEFINE_LED(kled) 222 struct workqueue_struct *workqueue; 223}; 224 225/* 226 * This is the main structure, we can use it to store anything interesting 227 * about the hotk device 228 */ 229struct asus_laptop { 230 char *name; /* laptop name */ 231 232 struct acpi_table_header *dsdt_info; 233 struct platform_device *platform_device; 234 struct acpi_device *device; /* the device we are in */ 235 struct backlight_device *backlight_device; 236 237 struct input_dev *inputdev; 238 struct key_entry *keymap; 239 240 struct asus_laptop_leds leds; 241 242 int wireless_status; 243 bool have_rsts; 244 245 acpi_handle handle; /* the handle of the hotk device */ 246 char status; /* status of the hotk, for LEDs, ... */ 247 u32 ledd_status; /* status of the LED display */ 248 u8 light_level; /* light sensor level */ 249 u8 light_switch; /* light sensor switch value */ 250 u16 event_count[128]; /* count for each event TODO make this better */ 251 u16 *keycode_map; 252}; 253 254struct key_entry { 255 char type; 256 u8 code; 257 u16 keycode; 258}; 259 260enum { KE_KEY, KE_END }; 261 262static const struct key_entry asus_keymap[] = { 263 {KE_KEY, 0x02, KEY_SCREENLOCK}, 264 {KE_KEY, 0x05, KEY_WLAN}, 265 {KE_KEY, 0x08, KEY_F13}, 266 {KE_KEY, 0x17, KEY_ZOOM}, 267 {KE_KEY, 0x1f, KEY_BATTERY}, 268 {KE_KEY, 0x30, KEY_VOLUMEUP}, 269 {KE_KEY, 0x31, KEY_VOLUMEDOWN}, 270 {KE_KEY, 0x32, KEY_MUTE}, 271 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE}, 272 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE}, 273 {KE_KEY, 0x40, KEY_PREVIOUSSONG}, 274 {KE_KEY, 0x41, KEY_NEXTSONG}, 275 {KE_KEY, 0x43, KEY_STOPCD}, 276 {KE_KEY, 0x45, KEY_PLAYPAUSE}, 277 {KE_KEY, 0x4c, KEY_MEDIA}, 278 {KE_KEY, 0x50, KEY_EMAIL}, 279 {KE_KEY, 0x51, KEY_WWW}, 280 {KE_KEY, 0x55, KEY_CALC}, 281 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */ 282 {KE_KEY, 0x5D, KEY_WLAN}, 283 {KE_KEY, 0x5E, KEY_WLAN}, 284 {KE_KEY, 0x5F, KEY_WLAN}, 285 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE}, 286 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE}, 287 {KE_KEY, 0x62, KEY_SWITCHVIDEOMODE}, 288 {KE_KEY, 0x63, KEY_SWITCHVIDEOMODE}, 289 {KE_KEY, 0x6B, KEY_F13}, /* Lock Touchpad */ 290 {KE_KEY, 0x82, KEY_CAMERA}, 291 {KE_KEY, 0x88, KEY_WLAN }, 292 {KE_KEY, 0x8A, KEY_PROG1}, 293 {KE_KEY, 0x95, KEY_MEDIA}, 294 {KE_KEY, 0x99, KEY_PHONE}, 295 {KE_KEY, 0xc4, KEY_KBDILLUMUP}, 296 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN}, 297 {KE_END, 0}, 298}; 299 300/* 301 * This function evaluates an ACPI method, given an int as parameter, the 302 * method is searched within the scope of the handle, can be NULL. The output 303 * of the method is written is output, which can also be NULL 304 * 305 * returns 0 if write is successful, -1 else. 306 */ 307static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 308 struct acpi_buffer *output) 309{ 310 struct acpi_object_list params; /* list of input parameters (an int) */ 311 union acpi_object in_obj; /* the only param we use */ 312 acpi_status status; 313 314 if (!handle) 315 return 0; 316 317 params.count = 1; 318 params.pointer = &in_obj; 319 in_obj.type = ACPI_TYPE_INTEGER; 320 in_obj.integer.value = val; 321 322 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 323 if (status == AE_OK) 324 return 0; 325 else 326 return -1; 327} 328 329static int write_acpi_int(acpi_handle handle, const char *method, int val) 330{ 331 return write_acpi_int_ret(handle, method, val, NULL); 332} 333 334static int read_gps_status(struct asus_laptop *asus) 335{ 336 unsigned long long status; 337 acpi_status rv = AE_OK; 338 339 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status); 340 if (ACPI_FAILURE(rv)) 341 pr_warning("Error reading GPS status\n"); 342 else 343 return status ? 1 : 0; 344 345 return (asus->status & GPS_ON) ? 1 : 0; 346} 347 348/* Generic LED functions */ 349static int read_status(struct asus_laptop *asus, int mask) 350{ 351 if (mask == GPS_ON) 352 return read_gps_status(asus); 353 354 return (asus->status & mask) ? 1 : 0; 355} 356 357static void write_status(struct asus_laptop *asus, acpi_handle handle, 358 int out, int mask) 359{ 360 asus->status = (out) ? (asus->status | mask) : (asus->status & ~mask); 361 362 switch (mask) { 363 case MLED_ON: 364 out = !(out & 0x1); 365 break; 366 case GLED_ON: 367 out = (out & 0x1) + 1; 368 break; 369 case GPS_ON: 370 handle = (out) ? gps_on_handle : gps_off_handle; 371 out = 0x02; 372 break; 373 default: 374 out &= 0x1; 375 break; 376 } 377 378 if (write_acpi_int(handle, NULL, out)) 379 pr_warning(" write failed %x\n", mask); 380} 381 382/* 383 * LEDs 384 */ 385#define ASUS_LED(object, ledname, max) \ 386 static void object##_led_set(struct led_classdev *led_cdev, \ 387 enum led_brightness value); \ 388 static enum led_brightness object##_led_get( \ 389 struct led_classdev *led_cdev); \ 390 static void object##_led_update(struct work_struct *ignored); \ 391 static struct led_classdev object##_led = { \ 392 .name = "asus::" ledname, \ 393 .brightness_set = object##_led_set, \ 394 .brightness_get = object##_led_get, \ 395 .max_brightness = max \ 396 } 397 398ASUS_LED(mled, "mail", 1); 399ASUS_LED(tled, "touchpad", 1); 400ASUS_LED(rled, "record", 1); 401ASUS_LED(pled, "phone", 1); 402ASUS_LED(gled, "gaming", 1); 403ASUS_LED(kled, "kbd_backlight", 3); 404 405/* /sys/class/led handlers */ 406#define ASUS_LED_HANDLER(object, mask) \ 407 static void object##_led_set(struct led_classdev *led_cdev, \ 408 enum led_brightness value) \ 409 { \ 410 struct asus_laptop *asus = \ 411 led_to_asus(led_cdev, object); \ 412 \ 413 asus->leds.object##_wk = (value > 0) ? 1 : 0; \ 414 queue_work(asus->leds.workqueue, \ 415 &asus->leds.object##_work); \ 416 } \ 417 static void object##_led_update(struct work_struct *work) \ 418 { \ 419 struct asus_laptop *asus = work_to_asus(work, object); \ 420 \ 421 int value = asus->leds.object##_wk; \ 422 write_status(asus, object##_set_handle, value, (mask)); \ 423 } \ 424 static enum led_brightness object##_led_get( \ 425 struct led_classdev *led_cdev) \ 426 { \ 427 return led_cdev->brightness; \ 428 } 429 430ASUS_LED_HANDLER(mled, MLED_ON); 431ASUS_LED_HANDLER(pled, PLED_ON); 432ASUS_LED_HANDLER(rled, RLED_ON); 433ASUS_LED_HANDLER(tled, TLED_ON); 434ASUS_LED_HANDLER(gled, GLED_ON); 435 436/* 437 * Keyboard backlight (also a LED) 438 */ 439static int get_kled_lvl(void) 440{ 441 unsigned long long kblv; 442 struct acpi_object_list params; 443 union acpi_object in_obj; 444 acpi_status rv; 445 446 params.count = 1; 447 params.pointer = &in_obj; 448 in_obj.type = ACPI_TYPE_INTEGER; 449 in_obj.integer.value = 2; 450 451 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv); 452 if (ACPI_FAILURE(rv)) { 453 pr_warning("Error reading kled level\n"); 454 return 0; 455 } 456 return kblv; 457} 458 459static int set_kled_lvl(struct asus_laptop *asus, int kblv) 460{ 461 if (kblv > 0) 462 kblv = (1 << 7) | (kblv & 0x7F); 463 else 464 kblv = 0; 465 466 if (write_acpi_int(kled_set_handle, NULL, kblv)) { 467 pr_warning("Keyboard LED display write failed\n"); 468 return -EINVAL; 469 } 470 return 0; 471} 472 473static void kled_led_set(struct led_classdev *led_cdev, 474 enum led_brightness value) 475{ 476 struct asus_laptop *asus = led_to_asus(led_cdev, kled); 477 478 asus->leds.kled_wk = value; 479 queue_work(asus->leds.workqueue, &asus->leds.kled_work); 480} 481 482static void kled_led_update(struct work_struct *work) 483{ 484 struct asus_laptop *asus = work_to_asus(work, kled); 485 486 set_kled_lvl(asus, asus->leds.kled_wk); 487} 488 489static enum led_brightness kled_led_get(struct led_classdev *led_cdev) 490{ 491 return get_kled_lvl(); 492} 493 494#define ASUS_LED_UNREGISTER(object) \ 495 if (object##_led.dev) \ 496 led_classdev_unregister(&object##_led) 497 498static void asus_led_exit(struct asus_laptop *asus) 499{ 500 ASUS_LED_UNREGISTER(mled); 501 ASUS_LED_UNREGISTER(tled); 502 ASUS_LED_UNREGISTER(pled); 503 ASUS_LED_UNREGISTER(rled); 504 ASUS_LED_UNREGISTER(gled); 505 ASUS_LED_UNREGISTER(kled); 506 if (asus->leds.workqueue) { 507 destroy_workqueue(asus->leds.workqueue); 508 asus->leds.workqueue = NULL; 509 } 510} 511 512/* Ugly macro, need to fix that later */ 513#define ASUS_LED_REGISTER(asus, object, _name, max) \ 514 do { \ 515 struct led_classdev *ldev = &asus->leds.object; \ 516 if (!object##_set_handle) \ 517 break ; \ 518 \ 519 INIT_WORK(&asus->leds.object##_work, object##_led_update); \ 520 ldev->name = "asus::" _name; \ 521 ldev->brightness_set = object##_led_set; \ 522 ldev->max_brightness = max; \ 523 rv = led_classdev_register(&asus->platform_device->dev, ldev); \ 524 if (rv) \ 525 goto error; \ 526 } while (0) 527 528static int asus_led_init(struct asus_laptop *asus) 529{ 530 int rv; 531 532 /* 533 * Functions that actually update the LED's are called from a 534 * workqueue. By doing this as separate work rather than when the LED 535 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 536 * potentially bad time, such as a timer interrupt. 537 */ 538 asus->leds.workqueue = create_singlethread_workqueue("led_workqueue"); 539 if (!asus->leds.workqueue) 540 return -ENOMEM; 541 542 ASUS_LED_REGISTER(asus, mled, "mail", 1); 543 ASUS_LED_REGISTER(asus, tled, "touchpad", 1); 544 ASUS_LED_REGISTER(asus, rled, "record", 1); 545 ASUS_LED_REGISTER(asus, pled, "phone", 1); 546 ASUS_LED_REGISTER(asus, gled, "gaming", 1); 547 if (kled_set_handle && kled_get_handle) 548 ASUS_LED_REGISTER(asus, kled, "kbd_backlight", 3); 549error: 550 if (rv) 551 asus_led_exit(asus); 552 return rv; 553} 554 555/* 556 * Backlight device 557 */ 558static int get_lcd_state(struct asus_laptop *asus) 559{ 560 return read_status(asus, LCD_ON); 561} 562 563static int set_lcd_state(struct asus_laptop *asus, int value) 564{ 565 int lcd = 0; 566 acpi_status status = 0; 567 568 lcd = value ? 1 : 0; 569 570 if (lcd == get_lcd_state(asus)) 571 return 0; 572 573 if (lcd_switch_handle) { 574 status = acpi_evaluate_object(lcd_switch_handle, 575 NULL, NULL, NULL); 576 577 if (ACPI_FAILURE(status)) 578 pr_warning("Error switching LCD\n"); 579 } 580 581 write_status(asus, NULL, lcd, LCD_ON); 582 return 0; 583} 584 585static void lcd_blank(struct asus_laptop *asus, int blank) 586{ 587 struct backlight_device *bd = asus->backlight_device; 588 589 if (bd) { 590 bd->props.power = blank; 591 backlight_update_status(bd); 592 } 593} 594 595static int read_brightness(struct backlight_device *bd) 596{ 597 unsigned long long value; 598 acpi_status rv = AE_OK; 599 600 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value); 601 if (ACPI_FAILURE(rv)) 602 pr_warning("Error reading brightness\n"); 603 604 return value; 605} 606 607static int set_brightness(struct backlight_device *bd, int value) 608{ 609 if (write_acpi_int(brightness_set_handle, NULL, value)) { 610 pr_warning("Error changing brightness\n"); 611 return -EIO; 612 } 613 return 0; 614} 615 616static int update_bl_status(struct backlight_device *bd) 617{ 618 struct asus_laptop *asus = bl_get_data(bd); 619 int rv; 620 int value = bd->props.brightness; 621 622 rv = set_brightness(bd, value); 623 if (rv) 624 return rv; 625 626 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 627 return set_lcd_state(asus, value); 628} 629 630static struct backlight_ops asusbl_ops = { 631 .get_brightness = read_brightness, 632 .update_status = update_bl_status, 633}; 634 635static int asus_backlight_init(struct asus_laptop *asus) 636{ 637 struct backlight_device *bd; 638 struct device *dev = &asus->platform_device->dev; 639 640 if (brightness_set_handle && lcd_switch_handle) { 641 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev, 642 asus, &asusbl_ops); 643 if (IS_ERR(bd)) { 644 pr_err("Could not register asus backlight device\n"); 645 asus->backlight_device = NULL; 646 return PTR_ERR(bd); 647 } 648 649 asus->backlight_device = bd; 650 651 bd->props.max_brightness = 15; 652 bd->props.brightness = read_brightness(NULL); 653 bd->props.power = FB_BLANK_UNBLANK; 654 backlight_update_status(bd); 655 } 656 return 0; 657} 658 659static void asus_backlight_exit(struct asus_laptop *asus) 660{ 661 if (asus->backlight_device) 662 backlight_device_unregister(asus->backlight_device); 663} 664 665/* 666 * Platform device handlers 667 */ 668 669/* 670 * We write our info in page, we begin at offset off and cannot write more 671 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 672 * number of bytes written in page 673 */ 674static ssize_t show_infos(struct device *dev, 675 struct device_attribute *attr, char *page) 676{ 677 struct asus_laptop *asus = dev_get_drvdata(dev); 678 int len = 0; 679 unsigned long long temp; 680 char buf[16]; /* enough for all info */ 681 acpi_status rv = AE_OK; 682 683 /* 684 * We use the easy way, we don't care of off and count, so we don't set eof 685 * to 1 686 */ 687 688 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 689 len += sprintf(page + len, "Model reference : %s\n", asus->name); 690 /* 691 * The SFUN method probably allows the original driver to get the list 692 * of features supported by a given model. For now, 0x0100 or 0x0800 693 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 694 * The significance of others is yet to be found. 695 */ 696 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 697 if (!ACPI_FAILURE(rv)) 698 len += sprintf(page + len, "SFUN value : %#x\n", 699 (uint) temp); 700 /* 701 * The HWRS method return informations about the hardware. 702 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 703 * The significance of others is yet to be found. 704 * If we don't find the method, we assume the device are present. 705 */ 706 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 707 if (!ACPI_FAILURE(rv)) 708 len += sprintf(page + len, "HRWS value : %#x\n", 709 (uint) temp); 710 /* 711 * Another value for userspace: the ASYM method returns 0x02 for 712 * battery low and 0x04 for battery critical, its readings tend to be 713 * more accurate than those provided by _BST. 714 * Note: since not all the laptops provide this method, errors are 715 * silently ignored. 716 */ 717 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 718 if (!ACPI_FAILURE(rv)) 719 len += sprintf(page + len, "ASYM value : %#x\n", 720 (uint) temp); 721 if (asus->dsdt_info) { 722 snprintf(buf, 16, "%d", asus->dsdt_info->length); 723 len += sprintf(page + len, "DSDT length : %s\n", buf); 724 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 725 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 726 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 727 len += sprintf(page + len, "DSDT revision : %s\n", buf); 728 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 729 len += sprintf(page + len, "OEM id : %s\n", buf); 730 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 731 len += sprintf(page + len, "OEM table id : %s\n", buf); 732 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 733 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 734 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 735 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 736 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 737 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 738 } 739 740 return len; 741} 742 743static int parse_arg(const char *buf, unsigned long count, int *val) 744{ 745 if (!count) 746 return 0; 747 if (count > 31) 748 return -EINVAL; 749 if (sscanf(buf, "%i", val) != 1) 750 return -EINVAL; 751 return count; 752} 753 754static ssize_t store_status(struct asus_laptop *asus, 755 const char *buf, size_t count, 756 acpi_handle handle, int mask) 757{ 758 int rv, value; 759 int out = 0; 760 761 rv = parse_arg(buf, count, &value); 762 if (rv > 0) 763 out = value ? 1 : 0; 764 765 write_status(asus, handle, out, mask); 766 767 return rv; 768} 769 770/* 771 * LEDD display 772 */ 773static ssize_t show_ledd(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, "0x%08x\n", asus->ledd_status); 779} 780 781static ssize_t store_ledd(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 int rv, value; 786 787 rv = parse_arg(buf, count, &value); 788 if (rv > 0) { 789 if (write_acpi_int(ledd_set_handle, NULL, value)) 790 pr_warning("LED display write failed\n"); 791 else 792 asus->ledd_status = (u32) value; 793 } 794 return rv; 795} 796 797/* 798 * Wireless 799 */ 800static int asus_wireless_status(struct asus_laptop *asus, int mask) 801{ 802 unsigned long long status; 803 acpi_status rv = AE_OK; 804 805 if (!asus->have_rsts) 806 return (asus->wireless_status & mask) ? 1 : 0; 807 808 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); 809 if (ACPI_FAILURE(rv)) { 810 pr_warning("Error reading Wireless status\n"); 811 return -EINVAL; 812 } 813 return !!(status & mask); 814} 815 816/* 817 * WLAN 818 */ 819static ssize_t show_wlan(struct device *dev, 820 struct device_attribute *attr, char *buf) 821{ 822 struct asus_laptop *asus = dev_get_drvdata(dev); 823 824 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_ON)); 825} 826 827static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 828 const char *buf, size_t count) 829{ 830 struct asus_laptop *asus = dev_get_drvdata(dev); 831 832 return store_status(asus, buf, count, wl_switch_handle, WL_ON); 833} 834 835/* 836 * Bluetooth 837 */ 838static ssize_t show_bluetooth(struct device *dev, 839 struct device_attribute *attr, char *buf) 840{ 841 struct asus_laptop *asus = dev_get_drvdata(dev); 842 843 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_ON)); 844} 845 846static ssize_t store_bluetooth(struct device *dev, 847 struct device_attribute *attr, const char *buf, 848 size_t count) 849{ 850 struct asus_laptop *asus = dev_get_drvdata(dev); 851 852 return store_status(asus, buf, count, bt_switch_handle, BT_ON); 853} 854 855/* 856 * Display 857 */ 858static void set_display(struct asus_laptop *asus, int value) 859{ 860 /* no sanity check needed for now */ 861 if (write_acpi_int(display_set_handle, NULL, value)) 862 pr_warning("Error setting display\n"); 863 return; 864} 865 866static int read_display(struct asus_laptop *asus) 867{ 868 unsigned long long value = 0; 869 acpi_status rv = AE_OK; 870 871 /* 872 * In most of the case, we know how to set the display, but sometime 873 * we can't read it 874 */ 875 if (display_get_handle) { 876 rv = acpi_evaluate_integer(display_get_handle, NULL, 877 NULL, &value); 878 if (ACPI_FAILURE(rv)) 879 pr_warning("Error reading display status\n"); 880 } 881 882 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 883 884 return value; 885} 886 887/* 888 * Now, *this* one could be more user-friendly, but so far, no-one has 889 * complained. The significance of bits is the same as in store_disp() 890 */ 891static ssize_t show_disp(struct device *dev, 892 struct device_attribute *attr, char *buf) 893{ 894 struct asus_laptop *asus = dev_get_drvdata(dev); 895 896 return sprintf(buf, "%d\n", read_display(asus)); 897} 898 899/* 900 * Experimental support for display switching. As of now: 1 should activate 901 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 902 * Any combination (bitwise) of these will suffice. I never actually tested 4 903 * displays hooked up simultaneously, so be warned. See the acpi4asus README 904 * for more info. 905 */ 906static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 907 const char *buf, size_t count) 908{ 909 struct asus_laptop *asus = dev_get_drvdata(dev); 910 int rv, value; 911 912 rv = parse_arg(buf, count, &value); 913 if (rv > 0) 914 set_display(asus, value); 915 return rv; 916} 917 918/* 919 * Light Sens 920 */ 921static void set_light_sens_switch(struct asus_laptop *asus, int value) 922{ 923 if (write_acpi_int(ls_switch_handle, NULL, value)) 924 pr_warning("Error setting light sensor switch\n"); 925 asus->light_switch = value; 926} 927 928static ssize_t show_lssw(struct device *dev, 929 struct device_attribute *attr, char *buf) 930{ 931 struct asus_laptop *asus = dev_get_drvdata(dev); 932 933 return sprintf(buf, "%d\n", asus->light_switch); 934} 935 936static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 937 const char *buf, size_t count) 938{ 939 struct asus_laptop *asus = dev_get_drvdata(dev); 940 int rv, value; 941 942 rv = parse_arg(buf, count, &value); 943 if (rv > 0) 944 set_light_sens_switch(asus, value ? 1 : 0); 945 946 return rv; 947} 948 949static void set_light_sens_level(struct asus_laptop *asus, int value) 950{ 951 if (write_acpi_int(ls_level_handle, NULL, value)) 952 pr_warning("Error setting light sensor level\n"); 953 asus->light_level = value; 954} 955 956static ssize_t show_lslvl(struct device *dev, 957 struct device_attribute *attr, char *buf) 958{ 959 struct asus_laptop *asus = dev_get_drvdata(dev); 960 961 return sprintf(buf, "%d\n", asus->light_level); 962} 963 964static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 965 const char *buf, size_t count) 966{ 967 struct asus_laptop *asus = dev_get_drvdata(dev); 968 int rv, value; 969 970 rv = parse_arg(buf, count, &value); 971 if (rv > 0) { 972 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 973 /* 0 <= value <= 15 */ 974 set_light_sens_level(asus, value); 975 } 976 977 return rv; 978} 979 980/* 981 * GPS 982 */ 983static ssize_t show_gps(struct device *dev, 984 struct device_attribute *attr, char *buf) 985{ 986 struct asus_laptop *asus = dev_get_drvdata(dev); 987 988 return sprintf(buf, "%d\n", read_status(asus, GPS_ON)); 989} 990 991static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 992 const char *buf, size_t count) 993{ 994 struct asus_laptop *asus = dev_get_drvdata(dev); 995 996 return store_status(asus, buf, count, NULL, GPS_ON); 997} 998 999/* 1000 * Input device (i.e. hotkeys) 1001 */ 1002static struct key_entry *asus_get_entry_by_scancode(struct asus_laptop *asus, 1003 int code) 1004{ 1005 struct key_entry *key; 1006 1007 for (key = asus->keymap; key->type != KE_END; key++) 1008 if (code == key->code) 1009 return key; 1010 1011 return NULL; 1012} 1013 1014static struct key_entry *asus_get_entry_by_keycode(struct asus_laptop *asus, 1015 int code) 1016{ 1017 struct key_entry *key; 1018 1019 for (key = asus->keymap; key->type != KE_END; key++) 1020 if (code == key->keycode && key->type == KE_KEY) 1021 return key; 1022 1023 return NULL; 1024} 1025 1026static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode) 1027{ 1028 struct asus_laptop *asus = input_get_drvdata(dev); 1029 struct key_entry *key = asus_get_entry_by_scancode(asus, scancode); 1030 1031 if (key && key->type == KE_KEY) { 1032 *keycode = key->keycode; 1033 return 0; 1034 } 1035 1036 return -EINVAL; 1037} 1038 1039static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode) 1040{ 1041 struct asus_laptop *asus = input_get_drvdata(dev); 1042 struct key_entry *key; 1043 int old_keycode; 1044 1045 if (keycode < 0 || keycode > KEY_MAX) 1046 return -EINVAL; 1047 1048 key = asus_get_entry_by_scancode(asus, scancode); 1049 if (key && key->type == KE_KEY) { 1050 old_keycode = key->keycode; 1051 key->keycode = keycode; 1052 set_bit(keycode, dev->keybit); 1053 if (!asus_get_entry_by_keycode(asus, old_keycode)) 1054 clear_bit(old_keycode, dev->keybit); 1055 return 0; 1056 } 1057 1058 return -EINVAL; 1059} 1060 1061static void asus_input_notify(struct asus_laptop *asus, int event) 1062{ 1063 struct key_entry *key; 1064 1065 key = asus_get_entry_by_scancode(asus, event); 1066 if (!key) 1067 return ; 1068 1069 switch (key->type) { 1070 case KE_KEY: 1071 input_report_key(asus->inputdev, key->keycode, 1); 1072 input_sync(asus->inputdev); 1073 input_report_key(asus->inputdev, key->keycode, 0); 1074 input_sync(asus->inputdev); 1075 break; 1076 } 1077} 1078 1079static int asus_input_init(struct asus_laptop *asus) 1080{ 1081 const struct key_entry *key; 1082 int result; 1083 1084 asus->inputdev = input_allocate_device(); 1085 if (!asus->inputdev) { 1086 pr_info("Unable to allocate input device\n"); 1087 return 0; 1088 } 1089 asus->inputdev->name = "Asus Laptop extra buttons"; 1090 asus->inputdev->dev.parent = &asus->platform_device->dev; 1091 asus->inputdev->phys = ASUS_LAPTOP_FILE "/input0"; 1092 asus->inputdev->id.bustype = BUS_HOST; 1093 asus->inputdev->getkeycode = asus_getkeycode; 1094 asus->inputdev->setkeycode = asus_setkeycode; 1095 input_set_drvdata(asus->inputdev, asus); 1096 1097 asus->keymap = kmemdup(asus_keymap, sizeof(asus_keymap), 1098 GFP_KERNEL); 1099 for (key = asus->keymap; key->type != KE_END; key++) { 1100 switch (key->type) { 1101 case KE_KEY: 1102 set_bit(EV_KEY, asus->inputdev->evbit); 1103 set_bit(key->keycode, asus->inputdev->keybit); 1104 break; 1105 } 1106 } 1107 result = input_register_device(asus->inputdev); 1108 if (result) { 1109 pr_info("Unable to register input device\n"); 1110 input_free_device(asus->inputdev); 1111 } 1112 return result; 1113} 1114 1115static void asus_input_exit(struct asus_laptop *asus) 1116{ 1117 if (asus->inputdev) 1118 input_unregister_device(asus->inputdev); 1119} 1120 1121/* 1122 * ACPI driver 1123 */ 1124static void asus_acpi_notify(struct acpi_device *device, u32 event) 1125{ 1126 struct asus_laptop *asus = acpi_driver_data(device); 1127 u16 count; 1128 1129 /* 1130 * We need to tell the backlight device when the backlight power is 1131 * switched 1132 */ 1133 if (event == ATKD_LCD_ON) { 1134 write_status(asus, NULL, 1, LCD_ON); 1135 lcd_blank(asus, FB_BLANK_UNBLANK); 1136 } else if (event == ATKD_LCD_OFF) { 1137 write_status(asus, NULL, 0, LCD_ON); 1138 lcd_blank(asus, FB_BLANK_POWERDOWN); 1139 } 1140 1141 /* TODO Find a better way to handle events count. */ 1142 count = asus->event_count[event % 128]++; 1143 acpi_bus_generate_proc_event(asus->device, event, count); 1144 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1145 dev_name(&asus->device->dev), event, 1146 count); 1147 1148 asus_input_notify(asus, event); 1149} 1150 1151#define ASUS_CREATE_DEVICE_ATTR(_name) \ 1152 struct device_attribute dev_attr_##_name = { \ 1153 .attr = { \ 1154 .name = __stringify(_name), \ 1155 .mode = 0 }, \ 1156 .show = NULL, \ 1157 .store = NULL, \ 1158 } 1159 1160#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ 1161 do { \ 1162 dev_attr_##_name.attr.mode = _mode; \ 1163 dev_attr_##_name.show = _show; \ 1164 dev_attr_##_name.store = _store; \ 1165 } while(0) 1166 1167static ASUS_CREATE_DEVICE_ATTR(infos); 1168static ASUS_CREATE_DEVICE_ATTR(wlan); 1169static ASUS_CREATE_DEVICE_ATTR(bluetooth); 1170static ASUS_CREATE_DEVICE_ATTR(display); 1171static ASUS_CREATE_DEVICE_ATTR(ledd); 1172static ASUS_CREATE_DEVICE_ATTR(ls_switch); 1173static ASUS_CREATE_DEVICE_ATTR(ls_level); 1174static ASUS_CREATE_DEVICE_ATTR(gps); 1175 1176static struct attribute *asuspf_attributes[] = { 1177 &dev_attr_infos.attr, 1178 &dev_attr_wlan.attr, 1179 &dev_attr_bluetooth.attr, 1180 &dev_attr_display.attr, 1181 &dev_attr_ledd.attr, 1182 &dev_attr_ls_switch.attr, 1183 &dev_attr_ls_level.attr, 1184 &dev_attr_gps.attr, 1185 NULL 1186}; 1187 1188static struct attribute_group platform_attribute_group = { 1189 .attrs = asuspf_attributes 1190}; 1191 1192static int asus_platform_init(struct asus_laptop *asus) 1193{ 1194 int result; 1195 1196 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1197 if (!asus->platform_device) 1198 return -ENOMEM; 1199 platform_set_drvdata(asus->platform_device, asus); 1200 1201 result = platform_device_add(asus->platform_device); 1202 if (result) 1203 goto fail_platform_device; 1204 1205 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1206 &platform_attribute_group); 1207 if (result) 1208 goto fail_sysfs; 1209 return 0; 1210 1211fail_sysfs: 1212 platform_device_del(asus->platform_device); 1213fail_platform_device: 1214 platform_device_put(asus->platform_device); 1215 return result; 1216} 1217 1218static void asus_platform_exit(struct asus_laptop *asus) 1219{ 1220 sysfs_remove_group(&asus->platform_device->dev.kobj, 1221 &platform_attribute_group); 1222 platform_device_unregister(asus->platform_device); 1223} 1224 1225static struct platform_driver platform_driver = { 1226 .driver = { 1227 .name = ASUS_LAPTOP_FILE, 1228 .owner = THIS_MODULE, 1229 } 1230}; 1231 1232static void asus_laptop_add_fs(struct asus_laptop *asus) 1233{ 1234 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); 1235 1236 if (wl_switch_handle) 1237 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); 1238 1239 if (bt_switch_handle) 1240 ASUS_SET_DEVICE_ATTR(bluetooth, 0644, 1241 show_bluetooth, store_bluetooth); 1242 1243 if (display_set_handle && display_get_handle) 1244 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); 1245 else if (display_set_handle) 1246 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); 1247 1248 if (ledd_set_handle) 1249 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); 1250 1251 if (ls_switch_handle && ls_level_handle) { 1252 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); 1253 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); 1254 } 1255 1256 if (gps_status_handle && gps_on_handle && gps_off_handle) 1257 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps); 1258} 1259 1260static int asus_handle_init(char *name, acpi_handle * handle, 1261 char **paths, int num_paths) 1262{ 1263 int i; 1264 acpi_status status; 1265 1266 for (i = 0; i < num_paths; i++) { 1267 status = acpi_get_handle(NULL, paths[i], handle); 1268 if (ACPI_SUCCESS(status)) 1269 return 0; 1270 } 1271 1272 *handle = NULL; 1273 return -ENODEV; 1274} 1275 1276#define ASUS_HANDLE_INIT(object) \ 1277 asus_handle_init(#object, &object##_handle, object##_paths, \ 1278 ARRAY_SIZE(object##_paths)) 1279 1280/* 1281 * This function is used to initialize the context with right values. In this 1282 * method, we can make all the detection we want, and modify the asus_laptop 1283 * struct 1284 */ 1285static int asus_laptop_get_info(struct asus_laptop *asus) 1286{ 1287 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1288 union acpi_object *model = NULL; 1289 unsigned long long bsts_result, hwrs_result; 1290 char *string = NULL; 1291 acpi_status status; 1292 1293 /* 1294 * Get DSDT headers early enough to allow for differentiating between 1295 * models, but late enough to allow acpi_bus_register_driver() to fail 1296 * before doing anything ACPI-specific. Should we encounter a machine, 1297 * which needs special handling (i.e. its hotkey device has a different 1298 * HID), this bit will be moved. 1299 */ 1300 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1301 if (ACPI_FAILURE(status)) 1302 pr_warning("Couldn't get the DSDT table header\n"); 1303 1304 /* We have to write 0 on init this far for all ASUS models */ 1305 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1306 pr_err("Hotkey initialization failed\n"); 1307 return -ENODEV; 1308 } 1309 1310 /* This needs to be called for some laptops to init properly */ 1311 status = 1312 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1313 if (ACPI_FAILURE(status)) 1314 pr_warning("Error calling BSTS\n"); 1315 else if (bsts_result) 1316 pr_notice("BSTS called, 0x%02x returned\n", 1317 (uint) bsts_result); 1318 1319 /* This too ... */ 1320 write_acpi_int(asus->handle, "CWAP", wapf); 1321 1322 /* 1323 * Try to match the object returned by INIT to the specific model. 1324 * Handle every possible object (or the lack of thereof) the DSDT 1325 * writers might throw at us. When in trouble, we pass NULL to 1326 * asus_model_match() and try something completely different. 1327 */ 1328 if (buffer.pointer) { 1329 model = buffer.pointer; 1330 switch (model->type) { 1331 case ACPI_TYPE_STRING: 1332 string = model->string.pointer; 1333 break; 1334 case ACPI_TYPE_BUFFER: 1335 string = model->buffer.pointer; 1336 break; 1337 default: 1338 string = ""; 1339 break; 1340 } 1341 } 1342 asus->name = kstrdup(string, GFP_KERNEL); 1343 if (!asus->name) 1344 return -ENOMEM; 1345 1346 if (*string) 1347 pr_notice(" %s model detected\n", string); 1348 1349 ASUS_HANDLE_INIT(mled_set); 1350 ASUS_HANDLE_INIT(tled_set); 1351 ASUS_HANDLE_INIT(rled_set); 1352 ASUS_HANDLE_INIT(pled_set); 1353 ASUS_HANDLE_INIT(gled_set); 1354 1355 ASUS_HANDLE_INIT(ledd_set); 1356 1357 ASUS_HANDLE_INIT(kled_set); 1358 ASUS_HANDLE_INIT(kled_get); 1359 1360 /* 1361 * The HWRS method return informations about the hardware. 1362 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1363 * The significance of others is yet to be found. 1364 * If we don't find the method, we assume the device are present. 1365 */ 1366 status = 1367 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1368 if (ACPI_FAILURE(status)) 1369 hwrs_result = WL_HWRS | BT_HWRS; 1370 1371 if (hwrs_result & WL_HWRS) 1372 ASUS_HANDLE_INIT(wl_switch); 1373 if (hwrs_result & BT_HWRS) 1374 ASUS_HANDLE_INIT(bt_switch); 1375 1376 if (!ASUS_HANDLE_INIT(wireless_status)) 1377 asus->have_rsts = true; 1378 1379 ASUS_HANDLE_INIT(brightness_set); 1380 ASUS_HANDLE_INIT(brightness_get); 1381 1382 ASUS_HANDLE_INIT(lcd_switch); 1383 1384 ASUS_HANDLE_INIT(display_set); 1385 ASUS_HANDLE_INIT(display_get); 1386 1387 /* 1388 * There is a lot of models with "ALSL", but a few get 1389 * a real light sens, so we need to check it. 1390 */ 1391 if (!ASUS_HANDLE_INIT(ls_switch)) 1392 ASUS_HANDLE_INIT(ls_level); 1393 1394 ASUS_HANDLE_INIT(gps_on); 1395 ASUS_HANDLE_INIT(gps_off); 1396 ASUS_HANDLE_INIT(gps_status); 1397 1398 kfree(model); 1399 1400 return AE_OK; 1401} 1402 1403static bool asus_device_present; 1404 1405static int __devinit asus_acpi_init(struct asus_laptop *asus) 1406{ 1407 int result = 0; 1408 1409 result = acpi_bus_get_status(asus->device); 1410 if (result) 1411 return result; 1412 if (!asus->device->status.present) { 1413 pr_err("Hotkey device not present, aborting\n"); 1414 return -ENODEV; 1415 } 1416 1417 result = asus_laptop_get_info(asus); 1418 if (result) 1419 return result; 1420 1421 asus_laptop_add_fs(asus); 1422 1423 /* WLED and BLED are on by default */ 1424 if (bluetooth_status >= 0) 1425 write_status(asus, bt_switch_handle, !!bluetooth_status, BT_ON); 1426 if (wireless_status >= 0) 1427 write_status(asus, wl_switch_handle, !!wireless_status, WL_ON); 1428 1429 /* If the h/w switch is off, we need to check the real status */ 1430 write_status(asus, NULL, asus_wireless_status(asus, BT_ON), BT_ON); 1431 write_status(asus, NULL, asus_wireless_status(asus, WL_ON), WL_ON); 1432 1433 /* LCD Backlight is on by default */ 1434 write_status(asus, NULL, 1, LCD_ON); 1435 1436 /* Keyboard Backlight is on by default */ 1437 if (kled_set_handle) 1438 set_kled_lvl(asus, 1); 1439 1440 /* LED display is off by default */ 1441 asus->ledd_status = 0xFFF; 1442 1443 /* Set initial values of light sensor and level */ 1444 asus->light_switch = 0; /* Default to light sensor disabled */ 1445 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1446 1447 if (ls_switch_handle) 1448 set_light_sens_switch(asus, asus->light_switch); 1449 1450 if (ls_level_handle) 1451 set_light_sens_level(asus, asus->light_level); 1452 1453 /* GPS is on by default */ 1454 write_status(asus, NULL, 1, GPS_ON); 1455 return result; 1456} 1457 1458static int __devinit asus_acpi_add(struct acpi_device *device) 1459{ 1460 struct asus_laptop *asus; 1461 int result; 1462 1463 pr_notice("Asus Laptop Support version %s\n", 1464 ASUS_LAPTOP_VERSION); 1465 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1466 if (!asus) 1467 return -ENOMEM; 1468 asus->handle = device->handle; 1469 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1470 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1471 device->driver_data = asus; 1472 asus->device = device; 1473 1474 result = asus_acpi_init(asus); 1475 if (result) 1476 goto fail_platform; 1477 1478 /* 1479 * Register the platform device first. It is used as a parent for the 1480 * sub-devices below. 1481 */ 1482 result = asus_platform_init(asus); 1483 if (result) 1484 goto fail_platform; 1485 1486 if (!acpi_video_backlight_support()) { 1487 result = asus_backlight_init(asus); 1488 if (result) 1489 goto fail_backlight; 1490 } else 1491 pr_info("Backlight controlled by ACPI video driver\n"); 1492 1493 result = asus_input_init(asus); 1494 if (result) 1495 goto fail_input; 1496 1497 result = asus_led_init(asus); 1498 if (result) 1499 goto fail_led; 1500 1501 asus_device_present = true; 1502 return 0; 1503 1504fail_led: 1505 asus_input_exit(asus); 1506fail_input: 1507 asus_backlight_exit(asus); 1508fail_backlight: 1509 asus_platform_exit(asus); 1510fail_platform: 1511 kfree(asus->name); 1512 kfree(asus); 1513 1514 return result; 1515} 1516 1517static int asus_acpi_remove(struct acpi_device *device, int type) 1518{ 1519 struct asus_laptop *asus = acpi_driver_data(device); 1520 1521 asus_backlight_exit(asus); 1522 asus_led_exit(asus); 1523 asus_input_exit(asus); 1524 asus_platform_exit(asus); 1525 1526 kfree(asus->name); 1527 kfree(asus); 1528 return 0; 1529} 1530 1531static const struct acpi_device_id asus_device_ids[] = { 1532 {"ATK0100", 0}, 1533 {"ATK0101", 0}, 1534 {"", 0}, 1535}; 1536MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1537 1538static struct acpi_driver asus_acpi_driver = { 1539 .name = ASUS_LAPTOP_NAME, 1540 .class = ASUS_LAPTOP_CLASS, 1541 .owner = THIS_MODULE, 1542 .ids = asus_device_ids, 1543 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1544 .ops = { 1545 .add = asus_acpi_add, 1546 .remove = asus_acpi_remove, 1547 .notify = asus_acpi_notify, 1548 }, 1549}; 1550 1551static int __init asus_laptop_init(void) 1552{ 1553 int result; 1554 1555 result = platform_driver_register(&platform_driver); 1556 if (result < 0) 1557 return result; 1558 1559 result = acpi_bus_register_driver(&asus_acpi_driver); 1560 if (result < 0) 1561 goto fail_acpi_driver; 1562 if (!asus_device_present) { 1563 result = -ENODEV; 1564 goto fail_no_device; 1565 } 1566 return 0; 1567 1568fail_no_device: 1569 acpi_bus_unregister_driver(&asus_acpi_driver); 1570fail_acpi_driver: 1571 platform_driver_unregister(&platform_driver); 1572 return result; 1573} 1574 1575static void __exit asus_laptop_exit(void) 1576{ 1577 acpi_bus_unregister_driver(&asus_acpi_driver); 1578 platform_driver_unregister(&platform_driver); 1579} 1580 1581module_init(asus_laptop_init); 1582module_exit(asus_laptop_exit); 1583