asus-laptop.c revision d8c6732382a24d2ef23665207263a17f04e3d75a
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_HOTK_NAME "Asus Laptop Support" 56#define ASUS_HOTK_CLASS "hotkey" 57#define ASUS_HOTK_DEVICE_NAME "Hotkey" 58#define ASUS_HOTK_FILE KBUILD_MODNAME 59#define ASUS_HOTK_PREFIX "\\_SB.ATKD." 60 61 62/* 63 * Some events we use, same for all Asus 64 */ 65#define ATKD_BR_UP 0x10 66#define ATKD_BR_DOWN 0x20 67#define ATKD_LCD_ON 0x33 68#define ATKD_LCD_OFF 0x34 69 70/* 71 * Known bits returned by \_SB.ATKD.HWRS 72 */ 73#define WL_HWRS 0x80 74#define BT_HWRS 0x100 75 76/* 77 * Flags for hotk status 78 * WL_ON and BT_ON are also used for wireless_status() 79 */ 80#define WL_ON 0x01 /* internal Wifi */ 81#define BT_ON 0x02 /* internal Bluetooth */ 82#define MLED_ON 0x04 /* mail LED */ 83#define TLED_ON 0x08 /* touchpad LED */ 84#define RLED_ON 0x10 /* Record LED */ 85#define PLED_ON 0x20 /* Phone LED */ 86#define GLED_ON 0x40 /* Gaming LED */ 87#define LCD_ON 0x80 /* LCD backlight */ 88#define GPS_ON 0x100 /* GPS */ 89#define KEY_ON 0x200 /* Keyboard backlight */ 90 91#define ASUS_LOG ASUS_HOTK_FILE ": " 92#define ASUS_ERR KERN_ERR ASUS_LOG 93#define ASUS_WARNING KERN_WARNING ASUS_LOG 94#define ASUS_NOTICE KERN_NOTICE ASUS_LOG 95#define ASUS_INFO KERN_INFO ASUS_LOG 96#define ASUS_DEBUG KERN_DEBUG ASUS_LOG 97 98MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 99MODULE_DESCRIPTION(ASUS_HOTK_NAME); 100MODULE_LICENSE("GPL"); 101 102/* 103 * WAPF defines the behavior of the Fn+Fx wlan key 104 * The significance of values is yet to be found, but 105 * most of the time: 106 * 0x0 will do nothing 107 * 0x1 will allow to control the device with Fn+Fx key. 108 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 109 * 0x5 like 0x1 or 0x4 110 * So, if something doesn't work as you want, just try other values =) 111 */ 112static uint wapf = 1; 113module_param(wapf, uint, 0644); 114MODULE_PARM_DESC(wapf, "WAPF value"); 115 116static uint wireless_status = 1; 117static uint bluetooth_status = 1; 118 119module_param(wireless_status, uint, 0644); 120MODULE_PARM_DESC(wireless_status, "Set the wireless status on boot " 121 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 122 "default is 1"); 123 124module_param(bluetooth_status, uint, 0644); 125MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 126 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 127 "default is 1"); 128 129#define ASUS_HANDLE(object, paths...) \ 130 static acpi_handle object##_handle = NULL; \ 131 static char *object##_paths[] = { paths } 132 133/* LED */ 134ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED"); 135ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED"); 136ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */ 137ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */ 138ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */ 139 140/* LEDD */ 141ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "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 */ 148ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); 149ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); 150ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ 151 152/* Brightness */ 153ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); 154ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); 155 156/* Backlight */ 157ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 158 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 159 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 160 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 161 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 162 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 163 "\\_SB.PCI0.PX40.Q10", /* S1x */ 164 "\\Q10"); /* A2x, L2D, L3D, M2E */ 165 166/* Display */ 167ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); 168ASUS_HANDLE(display_get, 169 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */ 170 "\\_SB.PCI0.P0P1.VGA.GETD", 171 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */ 172 "\\_SB.PCI0.P0P2.VGA.GETD", 173 /* A6V A6Q */ 174 "\\_SB.PCI0.P0P3.VGA.GETD", 175 /* A6T, A6M */ 176 "\\_SB.PCI0.P0PA.VGA.GETD", 177 /* L3C */ 178 "\\_SB.PCI0.PCI1.VGAC.NMAP", 179 /* Z96F */ 180 "\\_SB.PCI0.VGA.GETD", 181 /* A2D */ 182 "\\ACTD", 183 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 184 "\\ADVG", 185 /* P30 */ 186 "\\DNXT", 187 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 188 "\\INFB", 189 /* A3F A6F A3N A3L M6N W3N W6A */ 190 "\\SSTE"); 191 192ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */ 193ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */ 194 195/* GPS */ 196/* R2H use different handle for GPS on/off */ 197ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */ 198ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */ 199ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST"); 200 201/* Keyboard light */ 202ASUS_HANDLE(kled_set, ASUS_HOTK_PREFIX "SLKB"); 203ASUS_HANDLE(kled_get, ASUS_HOTK_PREFIX "GLKB"); 204 205/* 206 * This is the main structure, we can use it to store anything interesting 207 * about the hotk device 208 */ 209struct asus_hotk { 210 char *name; /* laptop name */ 211 struct acpi_device *device; /* the device we are in */ 212 acpi_handle handle; /* the handle of the hotk device */ 213 char status; /* status of the hotk, for LEDs, ... */ 214 u32 ledd_status; /* status of the LED display */ 215 u8 light_level; /* light sensor level */ 216 u8 light_switch; /* light sensor switch value */ 217 u16 event_count[128]; /* count for each event TODO make this better */ 218 struct input_dev *inputdev; 219 u16 *keycode_map; 220}; 221 222/* 223 * This header is made available to allow proper configuration given model, 224 * revision number , ... this info cannot go in struct asus_hotk because it is 225 * available before the hotk 226 */ 227static struct acpi_table_header *asus_info; 228 229/* The actual device the driver binds to */ 230static struct asus_hotk *hotk; 231 232/* 233 * The hotkey driver declaration 234 */ 235static const struct acpi_device_id asus_device_ids[] = { 236 {"ATK0100", 0}, 237 {"ATK0101", 0}, 238 {"", 0}, 239}; 240MODULE_DEVICE_TABLE(acpi, asus_device_ids); 241 242static int asus_hotk_add(struct acpi_device *device); 243static int asus_hotk_remove(struct acpi_device *device, int type); 244static void asus_hotk_notify(struct acpi_device *device, u32 event); 245 246static struct acpi_driver asus_hotk_driver = { 247 .name = ASUS_HOTK_NAME, 248 .class = ASUS_HOTK_CLASS, 249 .owner = THIS_MODULE, 250 .ids = asus_device_ids, 251 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 252 .ops = { 253 .add = asus_hotk_add, 254 .remove = asus_hotk_remove, 255 .notify = asus_hotk_notify, 256 }, 257}; 258 259/* The backlight device /sys/class/backlight */ 260static struct backlight_device *asus_backlight_device; 261 262/* 263 * The backlight class declaration 264 */ 265static int read_brightness(struct backlight_device *bd); 266static int update_bl_status(struct backlight_device *bd); 267static struct backlight_ops asusbl_ops = { 268 .get_brightness = read_brightness, 269 .update_status = update_bl_status, 270}; 271 272/* 273 * These functions actually update the LED's, and are called from a 274 * workqueue. By doing this as separate work rather than when the LED 275 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 276 * potentially bad time, such as a timer interrupt. 277 */ 278static struct workqueue_struct *led_workqueue; 279 280#define ASUS_LED(object, ledname, max) \ 281 static void object##_led_set(struct led_classdev *led_cdev, \ 282 enum led_brightness value); \ 283 static enum led_brightness object##_led_get( \ 284 struct led_classdev *led_cdev); \ 285 static void object##_led_update(struct work_struct *ignored); \ 286 static int object##_led_wk; \ 287 static DECLARE_WORK(object##_led_work, object##_led_update); \ 288 static struct led_classdev object##_led = { \ 289 .name = "asus::" ledname, \ 290 .brightness_set = object##_led_set, \ 291 .brightness_get = object##_led_get, \ 292 .max_brightness = max \ 293 } 294 295ASUS_LED(mled, "mail", 1); 296ASUS_LED(tled, "touchpad", 1); 297ASUS_LED(rled, "record", 1); 298ASUS_LED(pled, "phone", 1); 299ASUS_LED(gled, "gaming", 1); 300ASUS_LED(kled, "kbd_backlight", 3); 301 302struct key_entry { 303 char type; 304 u8 code; 305 u16 keycode; 306}; 307 308enum { KE_KEY, KE_END }; 309 310static struct key_entry asus_keymap[] = { 311 {KE_KEY, 0x02, KEY_SCREENLOCK}, 312 {KE_KEY, 0x05, KEY_WLAN}, 313 {KE_KEY, 0x08, KEY_F13}, 314 {KE_KEY, 0x17, KEY_ZOOM}, 315 {KE_KEY, 0x1f, KEY_BATTERY}, 316 {KE_KEY, 0x30, KEY_VOLUMEUP}, 317 {KE_KEY, 0x31, KEY_VOLUMEDOWN}, 318 {KE_KEY, 0x32, KEY_MUTE}, 319 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE}, 320 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE}, 321 {KE_KEY, 0x40, KEY_PREVIOUSSONG}, 322 {KE_KEY, 0x41, KEY_NEXTSONG}, 323 {KE_KEY, 0x43, KEY_STOPCD}, 324 {KE_KEY, 0x45, KEY_PLAYPAUSE}, 325 {KE_KEY, 0x4c, KEY_MEDIA}, 326 {KE_KEY, 0x50, KEY_EMAIL}, 327 {KE_KEY, 0x51, KEY_WWW}, 328 {KE_KEY, 0x55, KEY_CALC}, 329 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */ 330 {KE_KEY, 0x5D, KEY_WLAN}, 331 {KE_KEY, 0x5E, KEY_WLAN}, 332 {KE_KEY, 0x5F, KEY_WLAN}, 333 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE}, 334 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE}, 335 {KE_KEY, 0x62, KEY_SWITCHVIDEOMODE}, 336 {KE_KEY, 0x63, KEY_SWITCHVIDEOMODE}, 337 {KE_KEY, 0x6B, KEY_F13}, /* Lock Touchpad */ 338 {KE_KEY, 0x82, KEY_CAMERA}, 339 {KE_KEY, 0x88, KEY_WLAN }, 340 {KE_KEY, 0x8A, KEY_PROG1}, 341 {KE_KEY, 0x95, KEY_MEDIA}, 342 {KE_KEY, 0x99, KEY_PHONE}, 343 {KE_KEY, 0xc4, KEY_KBDILLUMUP}, 344 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN}, 345 {KE_END, 0}, 346}; 347 348/* 349 * This function evaluates an ACPI method, given an int as parameter, the 350 * method is searched within the scope of the handle, can be NULL. The output 351 * of the method is written is output, which can also be NULL 352 * 353 * returns 0 if write is successful, -1 else. 354 */ 355static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 356 struct acpi_buffer *output) 357{ 358 struct acpi_object_list params; /* list of input parameters (an int) */ 359 union acpi_object in_obj; /* the only param we use */ 360 acpi_status status; 361 362 if (!handle) 363 return 0; 364 365 params.count = 1; 366 params.pointer = &in_obj; 367 in_obj.type = ACPI_TYPE_INTEGER; 368 in_obj.integer.value = val; 369 370 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 371 if (status == AE_OK) 372 return 0; 373 else 374 return -1; 375} 376 377static int write_acpi_int(acpi_handle handle, const char *method, int val) 378{ 379 return write_acpi_int_ret(handle, method, val, NULL); 380} 381 382static int read_wireless_status(int mask) 383{ 384 unsigned long long status; 385 acpi_status rv = AE_OK; 386 387 if (!wireless_status_handle) 388 return (hotk->status & mask) ? 1 : 0; 389 390 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); 391 if (ACPI_FAILURE(rv)) 392 pr_warning("Error reading Wireless status\n"); 393 else 394 return (status & mask) ? 1 : 0; 395 396 return (hotk->status & mask) ? 1 : 0; 397} 398 399static int read_gps_status(void) 400{ 401 unsigned long long status; 402 acpi_status rv = AE_OK; 403 404 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status); 405 if (ACPI_FAILURE(rv)) 406 pr_warning("Error reading GPS status\n"); 407 else 408 return status ? 1 : 0; 409 410 return (hotk->status & GPS_ON) ? 1 : 0; 411} 412 413/* Generic LED functions */ 414static int read_status(int mask) 415{ 416 /* There is a special method for both wireless devices */ 417 if (mask == BT_ON || mask == WL_ON) 418 return read_wireless_status(mask); 419 else if (mask == GPS_ON) 420 return read_gps_status(); 421 422 return (hotk->status & mask) ? 1 : 0; 423} 424 425static void write_status(acpi_handle handle, int out, int mask) 426{ 427 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); 428 429 switch (mask) { 430 case MLED_ON: 431 out = !(out & 0x1); 432 break; 433 case GLED_ON: 434 out = (out & 0x1) + 1; 435 break; 436 case GPS_ON: 437 handle = (out) ? gps_on_handle : gps_off_handle; 438 out = 0x02; 439 break; 440 default: 441 out &= 0x1; 442 break; 443 } 444 445 if (write_acpi_int(handle, NULL, out)) 446 pr_warning(" write failed %x\n", mask); 447} 448 449/* /sys/class/led handlers */ 450#define ASUS_LED_HANDLER(object, mask) \ 451 static void object##_led_set(struct led_classdev *led_cdev, \ 452 enum led_brightness value) \ 453 { \ 454 object##_led_wk = (value > 0) ? 1 : 0; \ 455 queue_work(led_workqueue, &object##_led_work); \ 456 } \ 457 static void object##_led_update(struct work_struct *ignored) \ 458 { \ 459 int value = object##_led_wk; \ 460 write_status(object##_set_handle, value, (mask)); \ 461 } \ 462 static enum led_brightness object##_led_get( \ 463 struct led_classdev *led_cdev) \ 464 { \ 465 return led_cdev->brightness; \ 466 } 467 468ASUS_LED_HANDLER(mled, MLED_ON); 469ASUS_LED_HANDLER(pled, PLED_ON); 470ASUS_LED_HANDLER(rled, RLED_ON); 471ASUS_LED_HANDLER(tled, TLED_ON); 472ASUS_LED_HANDLER(gled, GLED_ON); 473 474/* 475 * Keyboard backlight 476 */ 477static int get_kled_lvl(void) 478{ 479 unsigned long long kblv; 480 struct acpi_object_list params; 481 union acpi_object in_obj; 482 acpi_status rv; 483 484 params.count = 1; 485 params.pointer = &in_obj; 486 in_obj.type = ACPI_TYPE_INTEGER; 487 in_obj.integer.value = 2; 488 489 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv); 490 if (ACPI_FAILURE(rv)) { 491 pr_warning("Error reading kled level\n"); 492 return 0; 493 } 494 return kblv; 495} 496 497static int set_kled_lvl(int kblv) 498{ 499 if (kblv > 0) 500 kblv = (1 << 7) | (kblv & 0x7F); 501 else 502 kblv = 0; 503 504 if (write_acpi_int(kled_set_handle, NULL, kblv)) { 505 pr_warning("Keyboard LED display write failed\n"); 506 return -EINVAL; 507 } 508 return 0; 509} 510 511static void kled_led_set(struct led_classdev *led_cdev, 512 enum led_brightness value) 513{ 514 kled_led_wk = value; 515 queue_work(led_workqueue, &kled_led_work); 516} 517 518static void kled_led_update(struct work_struct *ignored) 519{ 520 set_kled_lvl(kled_led_wk); 521} 522 523static enum led_brightness kled_led_get(struct led_classdev *led_cdev) 524{ 525 return get_kled_lvl(); 526} 527 528static int get_lcd_state(void) 529{ 530 return read_status(LCD_ON); 531} 532 533static int set_lcd_state(int value) 534{ 535 int lcd = 0; 536 acpi_status status = 0; 537 538 lcd = value ? 1 : 0; 539 540 if (lcd == get_lcd_state()) 541 return 0; 542 543 if (lcd_switch_handle) { 544 status = acpi_evaluate_object(lcd_switch_handle, 545 NULL, NULL, NULL); 546 547 if (ACPI_FAILURE(status)) 548 pr_warning("Error switching LCD\n"); 549 } 550 551 write_status(NULL, lcd, LCD_ON); 552 return 0; 553} 554 555static void lcd_blank(int blank) 556{ 557 struct backlight_device *bd = asus_backlight_device; 558 559 if (bd) { 560 bd->props.power = blank; 561 backlight_update_status(bd); 562 } 563} 564 565static int read_brightness(struct backlight_device *bd) 566{ 567 unsigned long long value; 568 acpi_status rv = AE_OK; 569 570 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value); 571 if (ACPI_FAILURE(rv)) 572 pr_warning("Error reading brightness\n"); 573 574 return value; 575} 576 577static int set_brightness(struct backlight_device *bd, int value) 578{ 579 if (write_acpi_int(brightness_set_handle, NULL, value)) { 580 pr_warning("Error changing brightness\n"); 581 return -EIO; 582 } 583 return 0; 584} 585 586static int update_bl_status(struct backlight_device *bd) 587{ 588 int rv; 589 int value = bd->props.brightness; 590 591 rv = set_brightness(bd, value); 592 if (rv) 593 return rv; 594 595 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 596 return set_lcd_state(value); 597} 598 599/* 600 * Platform device handlers 601 */ 602 603/* 604 * We write our info in page, we begin at offset off and cannot write more 605 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 606 * number of bytes written in page 607 */ 608static ssize_t show_infos(struct device *dev, 609 struct device_attribute *attr, char *page) 610{ 611 int len = 0; 612 unsigned long long temp; 613 char buf[16]; /* enough for all info */ 614 acpi_status rv = AE_OK; 615 616 /* 617 * We use the easy way, we don't care of off and count, so we don't set eof 618 * to 1 619 */ 620 621 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); 622 len += sprintf(page + len, "Model reference : %s\n", hotk->name); 623 /* 624 * The SFUN method probably allows the original driver to get the list 625 * of features supported by a given model. For now, 0x0100 or 0x0800 626 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 627 * The significance of others is yet to be found. 628 */ 629 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp); 630 if (!ACPI_FAILURE(rv)) 631 len += sprintf(page + len, "SFUN value : %#x\n", 632 (uint) temp); 633 /* 634 * The HWRS method return informations about the hardware. 635 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 636 * The significance of others is yet to be found. 637 * If we don't find the method, we assume the device are present. 638 */ 639 rv = acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &temp); 640 if (!ACPI_FAILURE(rv)) 641 len += sprintf(page + len, "HRWS value : %#x\n", 642 (uint) temp); 643 /* 644 * Another value for userspace: the ASYM method returns 0x02 for 645 * battery low and 0x04 for battery critical, its readings tend to be 646 * more accurate than those provided by _BST. 647 * Note: since not all the laptops provide this method, errors are 648 * silently ignored. 649 */ 650 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp); 651 if (!ACPI_FAILURE(rv)) 652 len += sprintf(page + len, "ASYM value : %#x\n", 653 (uint) temp); 654 if (asus_info) { 655 snprintf(buf, 16, "%d", asus_info->length); 656 len += sprintf(page + len, "DSDT length : %s\n", buf); 657 snprintf(buf, 16, "%d", asus_info->checksum); 658 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 659 snprintf(buf, 16, "%d", asus_info->revision); 660 len += sprintf(page + len, "DSDT revision : %s\n", buf); 661 snprintf(buf, 7, "%s", asus_info->oem_id); 662 len += sprintf(page + len, "OEM id : %s\n", buf); 663 snprintf(buf, 9, "%s", asus_info->oem_table_id); 664 len += sprintf(page + len, "OEM table id : %s\n", buf); 665 snprintf(buf, 16, "%x", asus_info->oem_revision); 666 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 667 snprintf(buf, 5, "%s", asus_info->asl_compiler_id); 668 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 669 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); 670 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 671 } 672 673 return len; 674} 675 676static int parse_arg(const char *buf, unsigned long count, int *val) 677{ 678 if (!count) 679 return 0; 680 if (count > 31) 681 return -EINVAL; 682 if (sscanf(buf, "%i", val) != 1) 683 return -EINVAL; 684 return count; 685} 686 687static ssize_t store_status(const char *buf, size_t count, 688 acpi_handle handle, int mask) 689{ 690 int rv, value; 691 int out = 0; 692 693 rv = parse_arg(buf, count, &value); 694 if (rv > 0) 695 out = value ? 1 : 0; 696 697 write_status(handle, out, mask); 698 699 return rv; 700} 701 702/* 703 * LEDD display 704 */ 705static ssize_t show_ledd(struct device *dev, 706 struct device_attribute *attr, char *buf) 707{ 708 return sprintf(buf, "0x%08x\n", hotk->ledd_status); 709} 710 711static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 712 const char *buf, size_t count) 713{ 714 int rv, value; 715 716 rv = parse_arg(buf, count, &value); 717 if (rv > 0) { 718 if (write_acpi_int(ledd_set_handle, NULL, value)) 719 pr_warning("LED display write failed\n"); 720 else 721 hotk->ledd_status = (u32) value; 722 } 723 return rv; 724} 725 726/* 727 * WLAN 728 */ 729static ssize_t show_wlan(struct device *dev, 730 struct device_attribute *attr, char *buf) 731{ 732 return sprintf(buf, "%d\n", read_status(WL_ON)); 733} 734 735static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 736 const char *buf, size_t count) 737{ 738 return store_status(buf, count, wl_switch_handle, WL_ON); 739} 740 741/* 742 * Bluetooth 743 */ 744static ssize_t show_bluetooth(struct device *dev, 745 struct device_attribute *attr, char *buf) 746{ 747 return sprintf(buf, "%d\n", read_status(BT_ON)); 748} 749 750static ssize_t store_bluetooth(struct device *dev, 751 struct device_attribute *attr, const char *buf, 752 size_t count) 753{ 754 return store_status(buf, count, bt_switch_handle, BT_ON); 755} 756 757/* 758 * Display 759 */ 760static void set_display(int value) 761{ 762 /* no sanity check needed for now */ 763 if (write_acpi_int(display_set_handle, NULL, value)) 764 pr_warning("Error setting display\n"); 765 return; 766} 767 768static int read_display(void) 769{ 770 unsigned long long value = 0; 771 acpi_status rv = AE_OK; 772 773 /* 774 * In most of the case, we know how to set the display, but sometime 775 * we can't read it 776 */ 777 if (display_get_handle) { 778 rv = acpi_evaluate_integer(display_get_handle, NULL, 779 NULL, &value); 780 if (ACPI_FAILURE(rv)) 781 pr_warning("Error reading display status\n"); 782 } 783 784 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 785 786 return value; 787} 788 789/* 790 * Now, *this* one could be more user-friendly, but so far, no-one has 791 * complained. The significance of bits is the same as in store_disp() 792 */ 793static ssize_t show_disp(struct device *dev, 794 struct device_attribute *attr, char *buf) 795{ 796 return sprintf(buf, "%d\n", read_display()); 797} 798 799/* 800 * Experimental support for display switching. As of now: 1 should activate 801 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 802 * Any combination (bitwise) of these will suffice. I never actually tested 4 803 * displays hooked up simultaneously, so be warned. See the acpi4asus README 804 * for more info. 805 */ 806static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 807 const char *buf, size_t count) 808{ 809 int rv, value; 810 811 rv = parse_arg(buf, count, &value); 812 if (rv > 0) 813 set_display(value); 814 return rv; 815} 816 817/* 818 * Light Sens 819 */ 820static void set_light_sens_switch(int value) 821{ 822 if (write_acpi_int(ls_switch_handle, NULL, value)) 823 pr_warning("Error setting light sensor switch\n"); 824 hotk->light_switch = value; 825} 826 827static ssize_t show_lssw(struct device *dev, 828 struct device_attribute *attr, char *buf) 829{ 830 return sprintf(buf, "%d\n", hotk->light_switch); 831} 832 833static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 834 const char *buf, size_t count) 835{ 836 int rv, value; 837 838 rv = parse_arg(buf, count, &value); 839 if (rv > 0) 840 set_light_sens_switch(value ? 1 : 0); 841 842 return rv; 843} 844 845static void set_light_sens_level(int value) 846{ 847 if (write_acpi_int(ls_level_handle, NULL, value)) 848 pr_warning("Error setting light sensor level\n"); 849 hotk->light_level = value; 850} 851 852static ssize_t show_lslvl(struct device *dev, 853 struct device_attribute *attr, char *buf) 854{ 855 return sprintf(buf, "%d\n", hotk->light_level); 856} 857 858static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 859 const char *buf, size_t count) 860{ 861 int rv, value; 862 863 rv = parse_arg(buf, count, &value); 864 if (rv > 0) { 865 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 866 /* 0 <= value <= 15 */ 867 set_light_sens_level(value); 868 } 869 870 return rv; 871} 872 873/* 874 * GPS 875 */ 876static ssize_t show_gps(struct device *dev, 877 struct device_attribute *attr, char *buf) 878{ 879 return sprintf(buf, "%d\n", read_status(GPS_ON)); 880} 881 882static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 883 const char *buf, size_t count) 884{ 885 return store_status(buf, count, NULL, GPS_ON); 886} 887 888/* 889 * Hotkey functions 890 */ 891static struct key_entry *asus_get_entry_by_scancode(int code) 892{ 893 struct key_entry *key; 894 895 for (key = asus_keymap; key->type != KE_END; key++) 896 if (code == key->code) 897 return key; 898 899 return NULL; 900} 901 902static struct key_entry *asus_get_entry_by_keycode(int code) 903{ 904 struct key_entry *key; 905 906 for (key = asus_keymap; key->type != KE_END; key++) 907 if (code == key->keycode && key->type == KE_KEY) 908 return key; 909 910 return NULL; 911} 912 913static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode) 914{ 915 struct key_entry *key = asus_get_entry_by_scancode(scancode); 916 917 if (key && key->type == KE_KEY) { 918 *keycode = key->keycode; 919 return 0; 920 } 921 922 return -EINVAL; 923} 924 925static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode) 926{ 927 struct key_entry *key; 928 int old_keycode; 929 930 if (keycode < 0 || keycode > KEY_MAX) 931 return -EINVAL; 932 933 key = asus_get_entry_by_scancode(scancode); 934 if (key && key->type == KE_KEY) { 935 old_keycode = key->keycode; 936 key->keycode = keycode; 937 set_bit(keycode, dev->keybit); 938 if (!asus_get_entry_by_keycode(old_keycode)) 939 clear_bit(old_keycode, dev->keybit); 940 return 0; 941 } 942 943 return -EINVAL; 944} 945 946static void asus_hotk_notify(struct acpi_device *device, u32 event) 947{ 948 static struct key_entry *key; 949 u16 count; 950 951 /* TODO Find a better way to handle events count. */ 952 if (!hotk) 953 return; 954 955 /* 956 * We need to tell the backlight device when the backlight power is 957 * switched 958 */ 959 if (event == ATKD_LCD_ON) { 960 write_status(NULL, 1, LCD_ON); 961 lcd_blank(FB_BLANK_UNBLANK); 962 } else if (event == ATKD_LCD_OFF) { 963 write_status(NULL, 0, LCD_ON); 964 lcd_blank(FB_BLANK_POWERDOWN); 965 } 966 967 count = hotk->event_count[event % 128]++; 968 acpi_bus_generate_proc_event(hotk->device, event, count); 969 acpi_bus_generate_netlink_event(hotk->device->pnp.device_class, 970 dev_name(&hotk->device->dev), event, 971 count); 972 973 if (hotk->inputdev) { 974 key = asus_get_entry_by_scancode(event); 975 if (!key) 976 return ; 977 978 switch (key->type) { 979 case KE_KEY: 980 input_report_key(hotk->inputdev, key->keycode, 1); 981 input_sync(hotk->inputdev); 982 input_report_key(hotk->inputdev, key->keycode, 0); 983 input_sync(hotk->inputdev); 984 break; 985 } 986 } 987} 988 989#define ASUS_CREATE_DEVICE_ATTR(_name) \ 990 struct device_attribute dev_attr_##_name = { \ 991 .attr = { \ 992 .name = __stringify(_name), \ 993 .mode = 0 }, \ 994 .show = NULL, \ 995 .store = NULL, \ 996 } 997 998#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ 999 do { \ 1000 dev_attr_##_name.attr.mode = _mode; \ 1001 dev_attr_##_name.show = _show; \ 1002 dev_attr_##_name.store = _store; \ 1003 } while(0) 1004 1005static ASUS_CREATE_DEVICE_ATTR(infos); 1006static ASUS_CREATE_DEVICE_ATTR(wlan); 1007static ASUS_CREATE_DEVICE_ATTR(bluetooth); 1008static ASUS_CREATE_DEVICE_ATTR(display); 1009static ASUS_CREATE_DEVICE_ATTR(ledd); 1010static ASUS_CREATE_DEVICE_ATTR(ls_switch); 1011static ASUS_CREATE_DEVICE_ATTR(ls_level); 1012static ASUS_CREATE_DEVICE_ATTR(gps); 1013 1014static struct attribute *asuspf_attributes[] = { 1015 &dev_attr_infos.attr, 1016 &dev_attr_wlan.attr, 1017 &dev_attr_bluetooth.attr, 1018 &dev_attr_display.attr, 1019 &dev_attr_ledd.attr, 1020 &dev_attr_ls_switch.attr, 1021 &dev_attr_ls_level.attr, 1022 &dev_attr_gps.attr, 1023 NULL 1024}; 1025 1026static struct attribute_group asuspf_attribute_group = { 1027 .attrs = asuspf_attributes 1028}; 1029 1030static struct platform_driver asuspf_driver = { 1031 .driver = { 1032 .name = ASUS_HOTK_FILE, 1033 .owner = THIS_MODULE, 1034 } 1035}; 1036 1037static struct platform_device *asuspf_device; 1038 1039static void asus_hotk_add_fs(void) 1040{ 1041 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); 1042 1043 if (wl_switch_handle) 1044 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); 1045 1046 if (bt_switch_handle) 1047 ASUS_SET_DEVICE_ATTR(bluetooth, 0644, 1048 show_bluetooth, store_bluetooth); 1049 1050 if (display_set_handle && display_get_handle) 1051 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); 1052 else if (display_set_handle) 1053 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); 1054 1055 if (ledd_set_handle) 1056 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); 1057 1058 if (ls_switch_handle && ls_level_handle) { 1059 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); 1060 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); 1061 } 1062 1063 if (gps_status_handle && gps_on_handle && gps_off_handle) 1064 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps); 1065} 1066 1067static int asus_handle_init(char *name, acpi_handle * handle, 1068 char **paths, int num_paths) 1069{ 1070 int i; 1071 acpi_status status; 1072 1073 for (i = 0; i < num_paths; i++) { 1074 status = acpi_get_handle(NULL, paths[i], handle); 1075 if (ACPI_SUCCESS(status)) 1076 return 0; 1077 } 1078 1079 *handle = NULL; 1080 return -ENODEV; 1081} 1082 1083#define ASUS_HANDLE_INIT(object) \ 1084 asus_handle_init(#object, &object##_handle, object##_paths, \ 1085 ARRAY_SIZE(object##_paths)) 1086 1087/* 1088 * This function is used to initialize the hotk with right values. In this 1089 * method, we can make all the detection we want, and modify the hotk struct 1090 */ 1091static int asus_hotk_get_info(void) 1092{ 1093 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1094 union acpi_object *model = NULL; 1095 unsigned long long bsts_result, hwrs_result; 1096 char *string = NULL; 1097 acpi_status status; 1098 1099 /* 1100 * Get DSDT headers early enough to allow for differentiating between 1101 * models, but late enough to allow acpi_bus_register_driver() to fail 1102 * before doing anything ACPI-specific. Should we encounter a machine, 1103 * which needs special handling (i.e. its hotkey device has a different 1104 * HID), this bit will be moved. A global variable asus_info contains 1105 * the DSDT header. 1106 */ 1107 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info); 1108 if (ACPI_FAILURE(status)) 1109 pr_warning("Couldn't get the DSDT table header\n"); 1110 1111 /* We have to write 0 on init this far for all ASUS models */ 1112 if (write_acpi_int_ret(hotk->handle, "INIT", 0, &buffer)) { 1113 pr_err("Hotkey initialization failed\n"); 1114 return -ENODEV; 1115 } 1116 1117 /* This needs to be called for some laptops to init properly */ 1118 status = 1119 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result); 1120 if (ACPI_FAILURE(status)) 1121 pr_warning("Error calling BSTS\n"); 1122 else if (bsts_result) 1123 pr_notice("BSTS called, 0x%02x returned\n", 1124 (uint) bsts_result); 1125 1126 /* This too ... */ 1127 write_acpi_int(hotk->handle, "CWAP", wapf); 1128 1129 /* 1130 * Try to match the object returned by INIT to the specific model. 1131 * Handle every possible object (or the lack of thereof) the DSDT 1132 * writers might throw at us. When in trouble, we pass NULL to 1133 * asus_model_match() and try something completely different. 1134 */ 1135 if (buffer.pointer) { 1136 model = buffer.pointer; 1137 switch (model->type) { 1138 case ACPI_TYPE_STRING: 1139 string = model->string.pointer; 1140 break; 1141 case ACPI_TYPE_BUFFER: 1142 string = model->buffer.pointer; 1143 break; 1144 default: 1145 string = ""; 1146 break; 1147 } 1148 } 1149 hotk->name = kstrdup(string, GFP_KERNEL); 1150 if (!hotk->name) 1151 return -ENOMEM; 1152 1153 if (*string) 1154 pr_notice(" %s model detected\n", string); 1155 1156 ASUS_HANDLE_INIT(mled_set); 1157 ASUS_HANDLE_INIT(tled_set); 1158 ASUS_HANDLE_INIT(rled_set); 1159 ASUS_HANDLE_INIT(pled_set); 1160 ASUS_HANDLE_INIT(gled_set); 1161 1162 ASUS_HANDLE_INIT(ledd_set); 1163 1164 ASUS_HANDLE_INIT(kled_set); 1165 ASUS_HANDLE_INIT(kled_get); 1166 1167 /* 1168 * The HWRS method return informations about the hardware. 1169 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1170 * The significance of others is yet to be found. 1171 * If we don't find the method, we assume the device are present. 1172 */ 1173 status = 1174 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result); 1175 if (ACPI_FAILURE(status)) 1176 hwrs_result = WL_HWRS | BT_HWRS; 1177 1178 if (hwrs_result & WL_HWRS) 1179 ASUS_HANDLE_INIT(wl_switch); 1180 if (hwrs_result & BT_HWRS) 1181 ASUS_HANDLE_INIT(bt_switch); 1182 1183 ASUS_HANDLE_INIT(wireless_status); 1184 1185 ASUS_HANDLE_INIT(brightness_set); 1186 ASUS_HANDLE_INIT(brightness_get); 1187 1188 ASUS_HANDLE_INIT(lcd_switch); 1189 1190 ASUS_HANDLE_INIT(display_set); 1191 ASUS_HANDLE_INIT(display_get); 1192 1193 /* 1194 * There is a lot of models with "ALSL", but a few get 1195 * a real light sens, so we need to check it. 1196 */ 1197 if (!ASUS_HANDLE_INIT(ls_switch)) 1198 ASUS_HANDLE_INIT(ls_level); 1199 1200 ASUS_HANDLE_INIT(gps_on); 1201 ASUS_HANDLE_INIT(gps_off); 1202 ASUS_HANDLE_INIT(gps_status); 1203 1204 kfree(model); 1205 1206 return AE_OK; 1207} 1208 1209static int asus_input_init(void) 1210{ 1211 const struct key_entry *key; 1212 int result; 1213 1214 hotk->inputdev = input_allocate_device(); 1215 if (!hotk->inputdev) { 1216 pr_info("Unable to allocate input device\n"); 1217 return 0; 1218 } 1219 hotk->inputdev->name = "Asus Laptop extra buttons"; 1220 hotk->inputdev->phys = ASUS_HOTK_FILE "/input0"; 1221 hotk->inputdev->id.bustype = BUS_HOST; 1222 hotk->inputdev->getkeycode = asus_getkeycode; 1223 hotk->inputdev->setkeycode = asus_setkeycode; 1224 1225 for (key = asus_keymap; key->type != KE_END; key++) { 1226 switch (key->type) { 1227 case KE_KEY: 1228 set_bit(EV_KEY, hotk->inputdev->evbit); 1229 set_bit(key->keycode, hotk->inputdev->keybit); 1230 break; 1231 } 1232 } 1233 result = input_register_device(hotk->inputdev); 1234 if (result) { 1235 pr_info("Unable to register input device\n"); 1236 input_free_device(hotk->inputdev); 1237 } 1238 return result; 1239} 1240 1241static int asus_hotk_check(void) 1242{ 1243 int result = 0; 1244 1245 result = acpi_bus_get_status(hotk->device); 1246 if (result) 1247 return result; 1248 1249 if (hotk->device->status.present) { 1250 result = asus_hotk_get_info(); 1251 } else { 1252 pr_err("Hotkey device not present, aborting\n"); 1253 return -EINVAL; 1254 } 1255 1256 return result; 1257} 1258 1259static int asus_hotk_found; 1260 1261static int asus_hotk_add(struct acpi_device *device) 1262{ 1263 int result; 1264 1265 pr_notice("Asus Laptop Support version %s\n", 1266 ASUS_LAPTOP_VERSION); 1267 1268 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL); 1269 if (!hotk) 1270 return -ENOMEM; 1271 1272 hotk->handle = device->handle; 1273 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); 1274 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); 1275 device->driver_data = hotk; 1276 hotk->device = device; 1277 1278 result = asus_hotk_check(); 1279 if (result) 1280 goto end; 1281 1282 asus_hotk_add_fs(); 1283 1284 asus_hotk_found = 1; 1285 1286 /* WLED and BLED are on by default */ 1287 if (bluetooth_status != -1) 1288 write_status(bt_switch_handle, !!bluetooth_status, BT_ON); 1289 if (wireless_status != -1) 1290 write_status(wl_switch_handle, !!wireless_status, WL_ON); 1291 1292 /* If the h/w switch is off, we need to check the real status */ 1293 write_status(NULL, read_status(BT_ON), BT_ON); 1294 write_status(NULL, read_status(WL_ON), WL_ON); 1295 1296 /* LCD Backlight is on by default */ 1297 write_status(NULL, 1, LCD_ON); 1298 1299 /* Keyboard Backlight is on by default */ 1300 if (kled_set_handle) 1301 set_kled_lvl(1); 1302 1303 /* LED display is off by default */ 1304 hotk->ledd_status = 0xFFF; 1305 1306 /* Set initial values of light sensor and level */ 1307 hotk->light_switch = 0; /* Default to light sensor disabled */ 1308 hotk->light_level = 5; /* level 5 for sensor sensitivity */ 1309 1310 if (ls_switch_handle) 1311 set_light_sens_switch(hotk->light_switch); 1312 1313 if (ls_level_handle) 1314 set_light_sens_level(hotk->light_level); 1315 1316 /* GPS is on by default */ 1317 write_status(NULL, 1, GPS_ON); 1318 1319end: 1320 if (result) { 1321 kfree(hotk->name); 1322 kfree(hotk); 1323 } 1324 1325 return result; 1326} 1327 1328static int asus_hotk_remove(struct acpi_device *device, int type) 1329{ 1330 kfree(hotk->name); 1331 kfree(hotk); 1332 1333 return 0; 1334} 1335 1336static void asus_backlight_exit(void) 1337{ 1338 if (asus_backlight_device) 1339 backlight_device_unregister(asus_backlight_device); 1340} 1341 1342#define ASUS_LED_UNREGISTER(object) \ 1343 if (object##_led.dev) \ 1344 led_classdev_unregister(&object##_led) 1345 1346static void asus_led_exit(void) 1347{ 1348 destroy_workqueue(led_workqueue); 1349 ASUS_LED_UNREGISTER(mled); 1350 ASUS_LED_UNREGISTER(tled); 1351 ASUS_LED_UNREGISTER(pled); 1352 ASUS_LED_UNREGISTER(rled); 1353 ASUS_LED_UNREGISTER(gled); 1354 ASUS_LED_UNREGISTER(kled); 1355} 1356 1357static void asus_input_exit(void) 1358{ 1359 if (hotk->inputdev) 1360 input_unregister_device(hotk->inputdev); 1361} 1362 1363static void __exit asus_laptop_exit(void) 1364{ 1365 asus_backlight_exit(); 1366 asus_led_exit(); 1367 asus_input_exit(); 1368 1369 acpi_bus_unregister_driver(&asus_hotk_driver); 1370 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); 1371 platform_device_unregister(asuspf_device); 1372 platform_driver_unregister(&asuspf_driver); 1373} 1374 1375static int asus_backlight_init(struct device *dev) 1376{ 1377 struct backlight_device *bd; 1378 1379 if (brightness_set_handle && lcd_switch_handle) { 1380 bd = backlight_device_register(ASUS_HOTK_FILE, dev, 1381 NULL, &asusbl_ops); 1382 if (IS_ERR(bd)) { 1383 pr_err("Could not register asus backlight device\n"); 1384 asus_backlight_device = NULL; 1385 return PTR_ERR(bd); 1386 } 1387 1388 asus_backlight_device = bd; 1389 1390 bd->props.max_brightness = 15; 1391 bd->props.brightness = read_brightness(NULL); 1392 bd->props.power = FB_BLANK_UNBLANK; 1393 backlight_update_status(bd); 1394 } 1395 return 0; 1396} 1397 1398static int asus_led_register(acpi_handle handle, 1399 struct led_classdev *ldev, struct device *dev) 1400{ 1401 if (!handle) 1402 return 0; 1403 1404 return led_classdev_register(dev, ldev); 1405} 1406 1407#define ASUS_LED_REGISTER(object, device) \ 1408 asus_led_register(object##_set_handle, &object##_led, device) 1409 1410static int asus_led_init(struct device *dev) 1411{ 1412 int rv; 1413 1414 rv = ASUS_LED_REGISTER(mled, dev); 1415 if (rv) 1416 goto out; 1417 1418 rv = ASUS_LED_REGISTER(tled, dev); 1419 if (rv) 1420 goto out1; 1421 1422 rv = ASUS_LED_REGISTER(rled, dev); 1423 if (rv) 1424 goto out2; 1425 1426 rv = ASUS_LED_REGISTER(pled, dev); 1427 if (rv) 1428 goto out3; 1429 1430 rv = ASUS_LED_REGISTER(gled, dev); 1431 if (rv) 1432 goto out4; 1433 1434 if (kled_set_handle && kled_get_handle) 1435 rv = ASUS_LED_REGISTER(kled, dev); 1436 if (rv) 1437 goto out5; 1438 1439 led_workqueue = create_singlethread_workqueue("led_workqueue"); 1440 if (!led_workqueue) 1441 goto out6; 1442 1443 return 0; 1444out6: 1445 rv = -ENOMEM; 1446 ASUS_LED_UNREGISTER(kled); 1447out5: 1448 ASUS_LED_UNREGISTER(gled); 1449out4: 1450 ASUS_LED_UNREGISTER(pled); 1451out3: 1452 ASUS_LED_UNREGISTER(rled); 1453out2: 1454 ASUS_LED_UNREGISTER(tled); 1455out1: 1456 ASUS_LED_UNREGISTER(mled); 1457out: 1458 return rv; 1459} 1460 1461static int __init asus_laptop_init(void) 1462{ 1463 int result; 1464 1465 result = acpi_bus_register_driver(&asus_hotk_driver); 1466 if (result < 0) 1467 return result; 1468 1469 /* 1470 * This is a bit of a kludge. We only want this module loaded 1471 * for ASUS systems, but there's currently no way to probe the 1472 * ACPI namespace for ASUS HIDs. So we just return failure if 1473 * we didn't find one, which will cause the module to be 1474 * unloaded. 1475 */ 1476 if (!asus_hotk_found) { 1477 acpi_bus_unregister_driver(&asus_hotk_driver); 1478 return -ENODEV; 1479 } 1480 1481 result = asus_input_init(); 1482 if (result) 1483 goto fail_input; 1484 1485 /* Register platform stuff */ 1486 result = platform_driver_register(&asuspf_driver); 1487 if (result) 1488 goto fail_platform_driver; 1489 1490 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); 1491 if (!asuspf_device) { 1492 result = -ENOMEM; 1493 goto fail_platform_device1; 1494 } 1495 1496 result = platform_device_add(asuspf_device); 1497 if (result) 1498 goto fail_platform_device2; 1499 1500 result = sysfs_create_group(&asuspf_device->dev.kobj, 1501 &asuspf_attribute_group); 1502 if (result) 1503 goto fail_sysfs; 1504 1505 result = asus_led_init(&asuspf_device->dev); 1506 if (result) 1507 goto fail_led; 1508 1509 if (!acpi_video_backlight_support()) { 1510 result = asus_backlight_init(&asuspf_device->dev); 1511 if (result) 1512 goto fail_backlight; 1513 } else 1514 pr_info("Brightness ignored, must be controlled by " 1515 "ACPI video driver\n"); 1516 1517 return 0; 1518 1519fail_backlight: 1520 asus_led_exit(); 1521 1522fail_led: 1523 sysfs_remove_group(&asuspf_device->dev.kobj, 1524 &asuspf_attribute_group); 1525 1526fail_sysfs: 1527 platform_device_del(asuspf_device); 1528 1529fail_platform_device2: 1530 platform_device_put(asuspf_device); 1531 1532fail_platform_device1: 1533 platform_driver_unregister(&asuspf_driver); 1534 1535fail_platform_driver: 1536 asus_input_exit(); 1537 1538fail_input: 1539 1540 return result; 1541} 1542 1543module_init(asus_laptop_init); 1544module_exit(asus_laptop_exit); 1545