asus-laptop.c revision b7fab7a0703a9d3a3b4b59aa2f7b098b2b83b8fe
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"); 115 116#define ASUS_HANDLE(object, paths...) \ 117 static acpi_handle object##_handle = NULL; \ 118 static char *object##_paths[] = { paths } 119 120/* LED */ 121ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED"); 122ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED"); 123ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */ 124ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */ 125ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */ 126 127/* LEDD */ 128ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM"); 129 130/* 131 * Bluetooth and WLAN 132 * WLED and BLED are not handled like other XLED, because in some dsdt 133 * they also control the WLAN/Bluetooth device. 134 */ 135ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); 136ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); 137ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ 138 139/* Brightness */ 140ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); 141ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); 142 143/* Backlight */ 144ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 145 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 146 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 147 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 148 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 149 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 150 "\\_SB.PCI0.PX40.Q10", /* S1x */ 151 "\\Q10"); /* A2x, L2D, L3D, M2E */ 152 153/* Display */ 154ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); 155ASUS_HANDLE(display_get, 156 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */ 157 "\\_SB.PCI0.P0P1.VGA.GETD", 158 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */ 159 "\\_SB.PCI0.P0P2.VGA.GETD", 160 /* A6V A6Q */ 161 "\\_SB.PCI0.P0P3.VGA.GETD", 162 /* A6T, A6M */ 163 "\\_SB.PCI0.P0PA.VGA.GETD", 164 /* L3C */ 165 "\\_SB.PCI0.PCI1.VGAC.NMAP", 166 /* Z96F */ 167 "\\_SB.PCI0.VGA.GETD", 168 /* A2D */ 169 "\\ACTD", 170 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 171 "\\ADVG", 172 /* P30 */ 173 "\\DNXT", 174 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 175 "\\INFB", 176 /* A3F A6F A3N A3L M6N W3N W6A */ 177 "\\SSTE"); 178 179ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */ 180ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */ 181 182/* GPS */ 183/* R2H use different handle for GPS on/off */ 184ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */ 185ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */ 186ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST"); 187 188/* Keyboard light */ 189ASUS_HANDLE(kled_set, ASUS_HOTK_PREFIX "SLKB"); 190ASUS_HANDLE(kled_get, ASUS_HOTK_PREFIX "GLKB"); 191 192/* 193 * This is the main structure, we can use it to store anything interesting 194 * about the hotk device 195 */ 196struct asus_hotk { 197 char *name; /* laptop name */ 198 struct acpi_device *device; /* the device we are in */ 199 acpi_handle handle; /* the handle of the hotk device */ 200 char status; /* status of the hotk, for LEDs, ... */ 201 u32 ledd_status; /* status of the LED display */ 202 u8 light_level; /* light sensor level */ 203 u8 light_switch; /* light sensor switch value */ 204 u16 event_count[128]; /* count for each event TODO make this better */ 205 struct input_dev *inputdev; 206 u16 *keycode_map; 207}; 208 209/* 210 * This header is made available to allow proper configuration given model, 211 * revision number , ... this info cannot go in struct asus_hotk because it is 212 * available before the hotk 213 */ 214static struct acpi_table_header *asus_info; 215 216/* The actual device the driver binds to */ 217static struct asus_hotk *hotk; 218 219/* 220 * The hotkey driver declaration 221 */ 222static const struct acpi_device_id asus_device_ids[] = { 223 {"ATK0100", 0}, 224 {"", 0}, 225}; 226MODULE_DEVICE_TABLE(acpi, asus_device_ids); 227 228static int asus_hotk_add(struct acpi_device *device); 229static int asus_hotk_remove(struct acpi_device *device, int type); 230static void asus_hotk_notify(struct acpi_device *device, u32 event); 231 232static struct acpi_driver asus_hotk_driver = { 233 .name = ASUS_HOTK_NAME, 234 .class = ASUS_HOTK_CLASS, 235 .ids = asus_device_ids, 236 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 237 .ops = { 238 .add = asus_hotk_add, 239 .remove = asus_hotk_remove, 240 .notify = asus_hotk_notify, 241 }, 242}; 243 244/* The backlight device /sys/class/backlight */ 245static struct backlight_device *asus_backlight_device; 246 247/* 248 * The backlight class declaration 249 */ 250static int read_brightness(struct backlight_device *bd); 251static int update_bl_status(struct backlight_device *bd); 252static struct backlight_ops asusbl_ops = { 253 .get_brightness = read_brightness, 254 .update_status = update_bl_status, 255}; 256 257/* 258 * These functions actually update the LED's, and are called from a 259 * workqueue. By doing this as separate work rather than when the LED 260 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 261 * potentially bad time, such as a timer interrupt. 262 */ 263static struct workqueue_struct *led_workqueue; 264 265#define ASUS_LED(object, ledname, max) \ 266 static void object##_led_set(struct led_classdev *led_cdev, \ 267 enum led_brightness value); \ 268 static enum led_brightness object##_led_get( \ 269 struct led_classdev *led_cdev); \ 270 static void object##_led_update(struct work_struct *ignored); \ 271 static int object##_led_wk; \ 272 static DECLARE_WORK(object##_led_work, object##_led_update); \ 273 static struct led_classdev object##_led = { \ 274 .name = "asus::" ledname, \ 275 .brightness_set = object##_led_set, \ 276 .brightness_get = object##_led_get, \ 277 .max_brightness = max \ 278 } 279 280ASUS_LED(mled, "mail", 1); 281ASUS_LED(tled, "touchpad", 1); 282ASUS_LED(rled, "record", 1); 283ASUS_LED(pled, "phone", 1); 284ASUS_LED(gled, "gaming", 1); 285ASUS_LED(kled, "kbd_backlight", 3); 286 287struct key_entry { 288 char type; 289 u8 code; 290 u16 keycode; 291}; 292 293enum { KE_KEY, KE_END }; 294 295static struct key_entry asus_keymap[] = { 296 {KE_KEY, 0x30, KEY_VOLUMEUP}, 297 {KE_KEY, 0x31, KEY_VOLUMEDOWN}, 298 {KE_KEY, 0x32, KEY_MUTE}, 299 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE}, 300 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE}, 301 {KE_KEY, 0x40, KEY_PREVIOUSSONG}, 302 {KE_KEY, 0x41, KEY_NEXTSONG}, 303 {KE_KEY, 0x43, KEY_STOPCD}, 304 {KE_KEY, 0x45, KEY_PLAYPAUSE}, 305 {KE_KEY, 0x4c, KEY_MEDIA}, 306 {KE_KEY, 0x50, KEY_EMAIL}, 307 {KE_KEY, 0x51, KEY_WWW}, 308 {KE_KEY, 0x55, KEY_CALC}, 309 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */ 310 {KE_KEY, 0x5D, KEY_WLAN}, 311 {KE_KEY, 0x5E, KEY_WLAN}, 312 {KE_KEY, 0x5F, KEY_WLAN}, 313 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE}, 314 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE}, 315 {KE_KEY, 0x6B, BTN_TOUCH}, /* Lock Mouse */ 316 {KE_KEY, 0x82, KEY_CAMERA}, 317 {KE_KEY, 0x8A, KEY_PROG1}, 318 {KE_KEY, 0x95, KEY_MEDIA}, 319 {KE_KEY, 0x99, KEY_PHONE}, 320 {KE_KEY, 0xc4, KEY_KBDILLUMUP}, 321 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN}, 322 {KE_END, 0}, 323}; 324 325/* 326 * This function evaluates an ACPI method, given an int as parameter, the 327 * method is searched within the scope of the handle, can be NULL. The output 328 * of the method is written is output, which can also be NULL 329 * 330 * returns 0 if write is successful, -1 else. 331 */ 332static int write_acpi_int(acpi_handle handle, const char *method, int val, 333 struct acpi_buffer *output) 334{ 335 struct acpi_object_list params; /* list of input parameters (an int) */ 336 union acpi_object in_obj; /* the only param we use */ 337 acpi_status status; 338 339 if (!handle) 340 return 0; 341 342 params.count = 1; 343 params.pointer = &in_obj; 344 in_obj.type = ACPI_TYPE_INTEGER; 345 in_obj.integer.value = val; 346 347 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 348 if (status == AE_OK) 349 return 0; 350 else 351 return -1; 352} 353 354static int read_wireless_status(int mask) 355{ 356 unsigned long long status; 357 acpi_status rv = AE_OK; 358 359 if (!wireless_status_handle) 360 return (hotk->status & mask) ? 1 : 0; 361 362 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); 363 if (ACPI_FAILURE(rv)) 364 pr_warning("Error reading Wireless status\n"); 365 else 366 return (status & mask) ? 1 : 0; 367 368 return (hotk->status & mask) ? 1 : 0; 369} 370 371static int read_gps_status(void) 372{ 373 unsigned long long status; 374 acpi_status rv = AE_OK; 375 376 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status); 377 if (ACPI_FAILURE(rv)) 378 pr_warning("Error reading GPS status\n"); 379 else 380 return status ? 1 : 0; 381 382 return (hotk->status & GPS_ON) ? 1 : 0; 383} 384 385/* Generic LED functions */ 386static int read_status(int mask) 387{ 388 /* There is a special method for both wireless devices */ 389 if (mask == BT_ON || mask == WL_ON) 390 return read_wireless_status(mask); 391 else if (mask == GPS_ON) 392 return read_gps_status(); 393 394 return (hotk->status & mask) ? 1 : 0; 395} 396 397static void write_status(acpi_handle handle, int out, int mask) 398{ 399 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); 400 401 switch (mask) { 402 case MLED_ON: 403 out = !(out & 0x1); 404 break; 405 case GLED_ON: 406 out = (out & 0x1) + 1; 407 break; 408 case GPS_ON: 409 handle = (out) ? gps_on_handle : gps_off_handle; 410 out = 0x02; 411 break; 412 default: 413 out &= 0x1; 414 break; 415 } 416 417 if (write_acpi_int(handle, NULL, out, NULL)) 418 pr_warning(" write failed %x\n", mask); 419} 420 421/* /sys/class/led handlers */ 422#define ASUS_LED_HANDLER(object, mask) \ 423 static void object##_led_set(struct led_classdev *led_cdev, \ 424 enum led_brightness value) \ 425 { \ 426 object##_led_wk = (value > 0) ? 1 : 0; \ 427 queue_work(led_workqueue, &object##_led_work); \ 428 } \ 429 static void object##_led_update(struct work_struct *ignored) \ 430 { \ 431 int value = object##_led_wk; \ 432 write_status(object##_set_handle, value, (mask)); \ 433 } \ 434 static enum led_brightness object##_led_get( \ 435 struct led_classdev *led_cdev) \ 436 { \ 437 return led_cdev->brightness; \ 438 } 439 440ASUS_LED_HANDLER(mled, MLED_ON); 441ASUS_LED_HANDLER(pled, PLED_ON); 442ASUS_LED_HANDLER(rled, RLED_ON); 443ASUS_LED_HANDLER(tled, TLED_ON); 444ASUS_LED_HANDLER(gled, GLED_ON); 445 446/* 447 * Keyboard backlight 448 */ 449static int get_kled_lvl(void) 450{ 451 unsigned long long kblv; 452 struct acpi_object_list params; 453 union acpi_object in_obj; 454 acpi_status rv; 455 456 params.count = 1; 457 params.pointer = &in_obj; 458 in_obj.type = ACPI_TYPE_INTEGER; 459 in_obj.integer.value = 2; 460 461 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv); 462 if (ACPI_FAILURE(rv)) { 463 pr_warning("Error reading kled level\n"); 464 return 0; 465 } 466 return kblv; 467} 468 469static int set_kled_lvl(int kblv) 470{ 471 if (kblv > 0) 472 kblv = (1 << 7) | (kblv & 0x7F); 473 else 474 kblv = 0; 475 476 if (write_acpi_int(kled_set_handle, NULL, kblv, NULL)) { 477 pr_warning("Keyboard LED display write failed\n"); 478 return -EINVAL; 479 } 480 return 0; 481} 482 483static void kled_led_set(struct led_classdev *led_cdev, 484 enum led_brightness value) 485{ 486 kled_led_wk = value; 487 queue_work(led_workqueue, &kled_led_work); 488} 489 490static void kled_led_update(struct work_struct *ignored) 491{ 492 set_kled_lvl(kled_led_wk); 493} 494 495static enum led_brightness kled_led_get(struct led_classdev *led_cdev) 496{ 497 return get_kled_lvl(); 498} 499 500static int get_lcd_state(void) 501{ 502 return read_status(LCD_ON); 503} 504 505static int set_lcd_state(int value) 506{ 507 int lcd = 0; 508 acpi_status status = 0; 509 510 lcd = value ? 1 : 0; 511 512 if (lcd == get_lcd_state()) 513 return 0; 514 515 if (lcd_switch_handle) { 516 status = acpi_evaluate_object(lcd_switch_handle, 517 NULL, NULL, NULL); 518 519 if (ACPI_FAILURE(status)) 520 pr_warning("Error switching LCD\n"); 521 } 522 523 write_status(NULL, lcd, LCD_ON); 524 return 0; 525} 526 527static void lcd_blank(int blank) 528{ 529 struct backlight_device *bd = asus_backlight_device; 530 531 if (bd) { 532 bd->props.power = blank; 533 backlight_update_status(bd); 534 } 535} 536 537static int read_brightness(struct backlight_device *bd) 538{ 539 unsigned long long value; 540 acpi_status rv = AE_OK; 541 542 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value); 543 if (ACPI_FAILURE(rv)) 544 pr_warning("Error reading brightness\n"); 545 546 return value; 547} 548 549static int set_brightness(struct backlight_device *bd, int value) 550{ 551 int ret = 0; 552 553 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 554 /* 0 <= value <= 15 */ 555 556 if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) { 557 pr_warning("Error changing brightness\n"); 558 ret = -EIO; 559 } 560 561 return ret; 562} 563 564static int update_bl_status(struct backlight_device *bd) 565{ 566 int rv; 567 int value = bd->props.brightness; 568 569 rv = set_brightness(bd, value); 570 if (rv) 571 return rv; 572 573 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 574 return set_lcd_state(value); 575} 576 577/* 578 * Platform device handlers 579 */ 580 581/* 582 * We write our info in page, we begin at offset off and cannot write more 583 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 584 * number of bytes written in page 585 */ 586static ssize_t show_infos(struct device *dev, 587 struct device_attribute *attr, char *page) 588{ 589 int len = 0; 590 unsigned long long temp; 591 char buf[16]; /* enough for all info */ 592 acpi_status rv = AE_OK; 593 594 /* 595 * We use the easy way, we don't care of off and count, so we don't set eof 596 * to 1 597 */ 598 599 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); 600 len += sprintf(page + len, "Model reference : %s\n", hotk->name); 601 /* 602 * The SFUN method probably allows the original driver to get the list 603 * of features supported by a given model. For now, 0x0100 or 0x0800 604 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 605 * The significance of others is yet to be found. 606 */ 607 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp); 608 if (!ACPI_FAILURE(rv)) 609 len += sprintf(page + len, "SFUN value : %#x\n", 610 (uint) temp); 611 /* 612 * The HWRS method return informations about the hardware. 613 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 614 * The significance of others is yet to be found. 615 * If we don't find the method, we assume the device are present. 616 */ 617 rv = acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &temp); 618 if (!ACPI_FAILURE(rv)) 619 len += sprintf(page + len, "HRWS value : %#x\n", 620 (uint) temp); 621 /* 622 * Another value for userspace: the ASYM method returns 0x02 for 623 * battery low and 0x04 for battery critical, its readings tend to be 624 * more accurate than those provided by _BST. 625 * Note: since not all the laptops provide this method, errors are 626 * silently ignored. 627 */ 628 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp); 629 if (!ACPI_FAILURE(rv)) 630 len += sprintf(page + len, "ASYM value : %#x\n", 631 (uint) temp); 632 if (asus_info) { 633 snprintf(buf, 16, "%d", asus_info->length); 634 len += sprintf(page + len, "DSDT length : %s\n", buf); 635 snprintf(buf, 16, "%d", asus_info->checksum); 636 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 637 snprintf(buf, 16, "%d", asus_info->revision); 638 len += sprintf(page + len, "DSDT revision : %s\n", buf); 639 snprintf(buf, 7, "%s", asus_info->oem_id); 640 len += sprintf(page + len, "OEM id : %s\n", buf); 641 snprintf(buf, 9, "%s", asus_info->oem_table_id); 642 len += sprintf(page + len, "OEM table id : %s\n", buf); 643 snprintf(buf, 16, "%x", asus_info->oem_revision); 644 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 645 snprintf(buf, 5, "%s", asus_info->asl_compiler_id); 646 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 647 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); 648 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 649 } 650 651 return len; 652} 653 654static int parse_arg(const char *buf, unsigned long count, int *val) 655{ 656 if (!count) 657 return 0; 658 if (count > 31) 659 return -EINVAL; 660 if (sscanf(buf, "%i", val) != 1) 661 return -EINVAL; 662 return count; 663} 664 665static ssize_t store_status(const char *buf, size_t count, 666 acpi_handle handle, int mask) 667{ 668 int rv, value; 669 int out = 0; 670 671 rv = parse_arg(buf, count, &value); 672 if (rv > 0) 673 out = value ? 1 : 0; 674 675 write_status(handle, out, mask); 676 677 return rv; 678} 679 680/* 681 * LEDD display 682 */ 683static ssize_t show_ledd(struct device *dev, 684 struct device_attribute *attr, char *buf) 685{ 686 return sprintf(buf, "0x%08x\n", hotk->ledd_status); 687} 688 689static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 690 const char *buf, size_t count) 691{ 692 int rv, value; 693 694 rv = parse_arg(buf, count, &value); 695 if (rv > 0) { 696 if (write_acpi_int(ledd_set_handle, NULL, value, NULL)) 697 pr_warning("LED display write failed\n"); 698 else 699 hotk->ledd_status = (u32) value; 700 } 701 return rv; 702} 703 704/* 705 * WLAN 706 */ 707static ssize_t show_wlan(struct device *dev, 708 struct device_attribute *attr, char *buf) 709{ 710 return sprintf(buf, "%d\n", read_status(WL_ON)); 711} 712 713static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 714 const char *buf, size_t count) 715{ 716 return store_status(buf, count, wl_switch_handle, WL_ON); 717} 718 719/* 720 * Bluetooth 721 */ 722static ssize_t show_bluetooth(struct device *dev, 723 struct device_attribute *attr, char *buf) 724{ 725 return sprintf(buf, "%d\n", read_status(BT_ON)); 726} 727 728static ssize_t store_bluetooth(struct device *dev, 729 struct device_attribute *attr, const char *buf, 730 size_t count) 731{ 732 return store_status(buf, count, bt_switch_handle, BT_ON); 733} 734 735/* 736 * Display 737 */ 738static void set_display(int value) 739{ 740 /* no sanity check needed for now */ 741 if (write_acpi_int(display_set_handle, NULL, value, NULL)) 742 pr_warning("Error setting display\n"); 743 return; 744} 745 746static int read_display(void) 747{ 748 unsigned long long value = 0; 749 acpi_status rv = AE_OK; 750 751 /* 752 * In most of the case, we know how to set the display, but sometime 753 * we can't read it 754 */ 755 if (display_get_handle) { 756 rv = acpi_evaluate_integer(display_get_handle, NULL, 757 NULL, &value); 758 if (ACPI_FAILURE(rv)) 759 pr_warning("Error reading display status\n"); 760 } 761 762 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 763 764 return value; 765} 766 767/* 768 * Now, *this* one could be more user-friendly, but so far, no-one has 769 * complained. The significance of bits is the same as in store_disp() 770 */ 771static ssize_t show_disp(struct device *dev, 772 struct device_attribute *attr, char *buf) 773{ 774 return sprintf(buf, "%d\n", read_display()); 775} 776 777/* 778 * Experimental support for display switching. As of now: 1 should activate 779 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 780 * Any combination (bitwise) of these will suffice. I never actually tested 4 781 * displays hooked up simultaneously, so be warned. See the acpi4asus README 782 * for more info. 783 */ 784static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 785 const char *buf, size_t count) 786{ 787 int rv, value; 788 789 rv = parse_arg(buf, count, &value); 790 if (rv > 0) 791 set_display(value); 792 return rv; 793} 794 795/* 796 * Light Sens 797 */ 798static void set_light_sens_switch(int value) 799{ 800 if (write_acpi_int(ls_switch_handle, NULL, value, NULL)) 801 pr_warning("Error setting light sensor switch\n"); 802 hotk->light_switch = value; 803} 804 805static ssize_t show_lssw(struct device *dev, 806 struct device_attribute *attr, char *buf) 807{ 808 return sprintf(buf, "%d\n", hotk->light_switch); 809} 810 811static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 812 const char *buf, size_t count) 813{ 814 int rv, value; 815 816 rv = parse_arg(buf, count, &value); 817 if (rv > 0) 818 set_light_sens_switch(value ? 1 : 0); 819 820 return rv; 821} 822 823static void set_light_sens_level(int value) 824{ 825 if (write_acpi_int(ls_level_handle, NULL, value, NULL)) 826 pr_warning("Error setting light sensor level\n"); 827 hotk->light_level = value; 828} 829 830static ssize_t show_lslvl(struct device *dev, 831 struct device_attribute *attr, char *buf) 832{ 833 return sprintf(buf, "%d\n", hotk->light_level); 834} 835 836static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 837 const char *buf, size_t count) 838{ 839 int rv, value; 840 841 rv = parse_arg(buf, count, &value); 842 if (rv > 0) { 843 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 844 /* 0 <= value <= 15 */ 845 set_light_sens_level(value); 846 } 847 848 return rv; 849} 850 851/* 852 * GPS 853 */ 854static ssize_t show_gps(struct device *dev, 855 struct device_attribute *attr, char *buf) 856{ 857 return sprintf(buf, "%d\n", read_status(GPS_ON)); 858} 859 860static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 861 const char *buf, size_t count) 862{ 863 return store_status(buf, count, NULL, GPS_ON); 864} 865 866/* 867 * Hotkey functions 868 */ 869static struct key_entry *asus_get_entry_by_scancode(int code) 870{ 871 struct key_entry *key; 872 873 for (key = asus_keymap; key->type != KE_END; key++) 874 if (code == key->code) 875 return key; 876 877 return NULL; 878} 879 880static struct key_entry *asus_get_entry_by_keycode(int code) 881{ 882 struct key_entry *key; 883 884 for (key = asus_keymap; key->type != KE_END; key++) 885 if (code == key->keycode && key->type == KE_KEY) 886 return key; 887 888 return NULL; 889} 890 891static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode) 892{ 893 struct key_entry *key = asus_get_entry_by_scancode(scancode); 894 895 if (key && key->type == KE_KEY) { 896 *keycode = key->keycode; 897 return 0; 898 } 899 900 return -EINVAL; 901} 902 903static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode) 904{ 905 struct key_entry *key; 906 int old_keycode; 907 908 if (keycode < 0 || keycode > KEY_MAX) 909 return -EINVAL; 910 911 key = asus_get_entry_by_scancode(scancode); 912 if (key && key->type == KE_KEY) { 913 old_keycode = key->keycode; 914 key->keycode = keycode; 915 set_bit(keycode, dev->keybit); 916 if (!asus_get_entry_by_keycode(old_keycode)) 917 clear_bit(old_keycode, dev->keybit); 918 return 0; 919 } 920 921 return -EINVAL; 922} 923 924static void asus_hotk_notify(struct acpi_device *device, u32 event) 925{ 926 static struct key_entry *key; 927 u16 count; 928 929 /* TODO Find a better way to handle events count. */ 930 if (!hotk) 931 return; 932 933 /* 934 * We need to tell the backlight device when the backlight power is 935 * switched 936 */ 937 if (event == ATKD_LCD_ON) { 938 write_status(NULL, 1, LCD_ON); 939 lcd_blank(FB_BLANK_UNBLANK); 940 } else if (event == ATKD_LCD_OFF) { 941 write_status(NULL, 0, LCD_ON); 942 lcd_blank(FB_BLANK_POWERDOWN); 943 } 944 945 count = hotk->event_count[event % 128]++; 946 acpi_bus_generate_proc_event(hotk->device, event, count); 947 acpi_bus_generate_netlink_event(hotk->device->pnp.device_class, 948 dev_name(&hotk->device->dev), event, 949 count); 950 951 if (hotk->inputdev) { 952 key = asus_get_entry_by_scancode(event); 953 if (!key) 954 return ; 955 956 switch (key->type) { 957 case KE_KEY: 958 input_report_key(hotk->inputdev, key->keycode, 1); 959 input_sync(hotk->inputdev); 960 input_report_key(hotk->inputdev, key->keycode, 0); 961 input_sync(hotk->inputdev); 962 break; 963 } 964 } 965} 966 967#define ASUS_CREATE_DEVICE_ATTR(_name) \ 968 struct device_attribute dev_attr_##_name = { \ 969 .attr = { \ 970 .name = __stringify(_name), \ 971 .mode = 0 }, \ 972 .show = NULL, \ 973 .store = NULL, \ 974 } 975 976#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ 977 do { \ 978 dev_attr_##_name.attr.mode = _mode; \ 979 dev_attr_##_name.show = _show; \ 980 dev_attr_##_name.store = _store; \ 981 } while(0) 982 983static ASUS_CREATE_DEVICE_ATTR(infos); 984static ASUS_CREATE_DEVICE_ATTR(wlan); 985static ASUS_CREATE_DEVICE_ATTR(bluetooth); 986static ASUS_CREATE_DEVICE_ATTR(display); 987static ASUS_CREATE_DEVICE_ATTR(ledd); 988static ASUS_CREATE_DEVICE_ATTR(ls_switch); 989static ASUS_CREATE_DEVICE_ATTR(ls_level); 990static ASUS_CREATE_DEVICE_ATTR(gps); 991 992static struct attribute *asuspf_attributes[] = { 993 &dev_attr_infos.attr, 994 &dev_attr_wlan.attr, 995 &dev_attr_bluetooth.attr, 996 &dev_attr_display.attr, 997 &dev_attr_ledd.attr, 998 &dev_attr_ls_switch.attr, 999 &dev_attr_ls_level.attr, 1000 &dev_attr_gps.attr, 1001 NULL 1002}; 1003 1004static struct attribute_group asuspf_attribute_group = { 1005 .attrs = asuspf_attributes 1006}; 1007 1008static struct platform_driver asuspf_driver = { 1009 .driver = { 1010 .name = ASUS_HOTK_FILE, 1011 .owner = THIS_MODULE, 1012 } 1013}; 1014 1015static struct platform_device *asuspf_device; 1016 1017static void asus_hotk_add_fs(void) 1018{ 1019 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); 1020 1021 if (wl_switch_handle) 1022 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); 1023 1024 if (bt_switch_handle) 1025 ASUS_SET_DEVICE_ATTR(bluetooth, 0644, 1026 show_bluetooth, store_bluetooth); 1027 1028 if (display_set_handle && display_get_handle) 1029 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); 1030 else if (display_set_handle) 1031 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); 1032 1033 if (ledd_set_handle) 1034 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); 1035 1036 if (ls_switch_handle && ls_level_handle) { 1037 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); 1038 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); 1039 } 1040 1041 if (gps_status_handle && gps_on_handle && gps_off_handle) 1042 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps); 1043} 1044 1045static int asus_handle_init(char *name, acpi_handle * handle, 1046 char **paths, int num_paths) 1047{ 1048 int i; 1049 acpi_status status; 1050 1051 for (i = 0; i < num_paths; i++) { 1052 status = acpi_get_handle(NULL, paths[i], handle); 1053 if (ACPI_SUCCESS(status)) 1054 return 0; 1055 } 1056 1057 *handle = NULL; 1058 return -ENODEV; 1059} 1060 1061#define ASUS_HANDLE_INIT(object) \ 1062 asus_handle_init(#object, &object##_handle, object##_paths, \ 1063 ARRAY_SIZE(object##_paths)) 1064 1065/* 1066 * This function is used to initialize the hotk with right values. In this 1067 * method, we can make all the detection we want, and modify the hotk struct 1068 */ 1069static int asus_hotk_get_info(void) 1070{ 1071 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1072 union acpi_object *model = NULL; 1073 unsigned long long bsts_result, hwrs_result; 1074 char *string = NULL; 1075 acpi_status status; 1076 1077 /* 1078 * Get DSDT headers early enough to allow for differentiating between 1079 * models, but late enough to allow acpi_bus_register_driver() to fail 1080 * before doing anything ACPI-specific. Should we encounter a machine, 1081 * which needs special handling (i.e. its hotkey device has a different 1082 * HID), this bit will be moved. A global variable asus_info contains 1083 * the DSDT header. 1084 */ 1085 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info); 1086 if (ACPI_FAILURE(status)) 1087 pr_warning("Couldn't get the DSDT table header\n"); 1088 1089 /* We have to write 0 on init this far for all ASUS models */ 1090 if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { 1091 pr_err("Hotkey initialization failed\n"); 1092 return -ENODEV; 1093 } 1094 1095 /* This needs to be called for some laptops to init properly */ 1096 status = 1097 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result); 1098 if (ACPI_FAILURE(status)) 1099 pr_warning("Error calling BSTS\n"); 1100 else if (bsts_result) 1101 pr_notice("BSTS called, 0x%02x returned\n", 1102 (uint) bsts_result); 1103 1104 /* This too ... */ 1105 write_acpi_int(hotk->handle, "CWAP", wapf, NULL); 1106 1107 /* 1108 * Try to match the object returned by INIT to the specific model. 1109 * Handle every possible object (or the lack of thereof) the DSDT 1110 * writers might throw at us. When in trouble, we pass NULL to 1111 * asus_model_match() and try something completely different. 1112 */ 1113 if (buffer.pointer) { 1114 model = buffer.pointer; 1115 switch (model->type) { 1116 case ACPI_TYPE_STRING: 1117 string = model->string.pointer; 1118 break; 1119 case ACPI_TYPE_BUFFER: 1120 string = model->buffer.pointer; 1121 break; 1122 default: 1123 string = ""; 1124 break; 1125 } 1126 } 1127 hotk->name = kstrdup(string, GFP_KERNEL); 1128 if (!hotk->name) 1129 return -ENOMEM; 1130 1131 if (*string) 1132 pr_notice(" %s model detected\n", string); 1133 1134 ASUS_HANDLE_INIT(mled_set); 1135 ASUS_HANDLE_INIT(tled_set); 1136 ASUS_HANDLE_INIT(rled_set); 1137 ASUS_HANDLE_INIT(pled_set); 1138 ASUS_HANDLE_INIT(gled_set); 1139 1140 ASUS_HANDLE_INIT(ledd_set); 1141 1142 ASUS_HANDLE_INIT(kled_set); 1143 ASUS_HANDLE_INIT(kled_get); 1144 1145 /* 1146 * The HWRS method return informations about the hardware. 1147 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1148 * The significance of others is yet to be found. 1149 * If we don't find the method, we assume the device are present. 1150 */ 1151 status = 1152 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result); 1153 if (ACPI_FAILURE(status)) 1154 hwrs_result = WL_HWRS | BT_HWRS; 1155 1156 if (hwrs_result & WL_HWRS) 1157 ASUS_HANDLE_INIT(wl_switch); 1158 if (hwrs_result & BT_HWRS) 1159 ASUS_HANDLE_INIT(bt_switch); 1160 1161 ASUS_HANDLE_INIT(wireless_status); 1162 1163 ASUS_HANDLE_INIT(brightness_set); 1164 ASUS_HANDLE_INIT(brightness_get); 1165 1166 ASUS_HANDLE_INIT(lcd_switch); 1167 1168 ASUS_HANDLE_INIT(display_set); 1169 ASUS_HANDLE_INIT(display_get); 1170 1171 /* 1172 * There is a lot of models with "ALSL", but a few get 1173 * a real light sens, so we need to check it. 1174 */ 1175 if (!ASUS_HANDLE_INIT(ls_switch)) 1176 ASUS_HANDLE_INIT(ls_level); 1177 1178 ASUS_HANDLE_INIT(gps_on); 1179 ASUS_HANDLE_INIT(gps_off); 1180 ASUS_HANDLE_INIT(gps_status); 1181 1182 kfree(model); 1183 1184 return AE_OK; 1185} 1186 1187static int asus_input_init(void) 1188{ 1189 const struct key_entry *key; 1190 int result; 1191 1192 hotk->inputdev = input_allocate_device(); 1193 if (!hotk->inputdev) { 1194 pr_info("Unable to allocate input device\n"); 1195 return 0; 1196 } 1197 hotk->inputdev->name = "Asus Laptop extra buttons"; 1198 hotk->inputdev->phys = ASUS_HOTK_FILE "/input0"; 1199 hotk->inputdev->id.bustype = BUS_HOST; 1200 hotk->inputdev->getkeycode = asus_getkeycode; 1201 hotk->inputdev->setkeycode = asus_setkeycode; 1202 1203 for (key = asus_keymap; key->type != KE_END; key++) { 1204 switch (key->type) { 1205 case KE_KEY: 1206 set_bit(EV_KEY, hotk->inputdev->evbit); 1207 set_bit(key->keycode, hotk->inputdev->keybit); 1208 break; 1209 } 1210 } 1211 result = input_register_device(hotk->inputdev); 1212 if (result) { 1213 pr_info("Unable to register input device\n"); 1214 input_free_device(hotk->inputdev); 1215 } 1216 return result; 1217} 1218 1219static int asus_hotk_check(void) 1220{ 1221 int result = 0; 1222 1223 result = acpi_bus_get_status(hotk->device); 1224 if (result) 1225 return result; 1226 1227 if (hotk->device->status.present) { 1228 result = asus_hotk_get_info(); 1229 } else { 1230 pr_err("Hotkey device not present, aborting\n"); 1231 return -EINVAL; 1232 } 1233 1234 return result; 1235} 1236 1237static int asus_hotk_found; 1238 1239static int asus_hotk_add(struct acpi_device *device) 1240{ 1241 int result; 1242 1243 pr_notice("Asus Laptop Support version %s\n", 1244 ASUS_LAPTOP_VERSION); 1245 1246 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL); 1247 if (!hotk) 1248 return -ENOMEM; 1249 1250 hotk->handle = device->handle; 1251 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); 1252 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); 1253 device->driver_data = hotk; 1254 hotk->device = device; 1255 1256 result = asus_hotk_check(); 1257 if (result) 1258 goto end; 1259 1260 asus_hotk_add_fs(); 1261 1262 asus_hotk_found = 1; 1263 1264 /* WLED and BLED are on by default */ 1265 write_status(bt_switch_handle, 1, BT_ON); 1266 write_status(wl_switch_handle, 1, WL_ON); 1267 1268 /* If the h/w switch is off, we need to check the real status */ 1269 write_status(NULL, read_status(BT_ON), BT_ON); 1270 write_status(NULL, read_status(WL_ON), WL_ON); 1271 1272 /* LCD Backlight is on by default */ 1273 write_status(NULL, 1, LCD_ON); 1274 1275 /* Keyboard Backlight is on by default */ 1276 if (kled_set_handle) 1277 set_kled_lvl(1); 1278 1279 /* LED display is off by default */ 1280 hotk->ledd_status = 0xFFF; 1281 1282 /* Set initial values of light sensor and level */ 1283 hotk->light_switch = 1; /* Default to light sensor disabled */ 1284 hotk->light_level = 0; /* level 5 for sensor sensitivity */ 1285 1286 if (ls_switch_handle) 1287 set_light_sens_switch(hotk->light_switch); 1288 1289 if (ls_level_handle) 1290 set_light_sens_level(hotk->light_level); 1291 1292 /* GPS is on by default */ 1293 write_status(NULL, 1, GPS_ON); 1294 1295end: 1296 if (result) { 1297 kfree(hotk->name); 1298 kfree(hotk); 1299 } 1300 1301 return result; 1302} 1303 1304static int asus_hotk_remove(struct acpi_device *device, int type) 1305{ 1306 kfree(hotk->name); 1307 kfree(hotk); 1308 1309 return 0; 1310} 1311 1312static void asus_backlight_exit(void) 1313{ 1314 if (asus_backlight_device) 1315 backlight_device_unregister(asus_backlight_device); 1316} 1317 1318#define ASUS_LED_UNREGISTER(object) \ 1319 if (object##_led.dev) \ 1320 led_classdev_unregister(&object##_led) 1321 1322static void asus_led_exit(void) 1323{ 1324 destroy_workqueue(led_workqueue); 1325 ASUS_LED_UNREGISTER(mled); 1326 ASUS_LED_UNREGISTER(tled); 1327 ASUS_LED_UNREGISTER(pled); 1328 ASUS_LED_UNREGISTER(rled); 1329 ASUS_LED_UNREGISTER(gled); 1330 ASUS_LED_UNREGISTER(kled); 1331} 1332 1333static void asus_input_exit(void) 1334{ 1335 if (hotk->inputdev) 1336 input_unregister_device(hotk->inputdev); 1337} 1338 1339static void __exit asus_laptop_exit(void) 1340{ 1341 asus_backlight_exit(); 1342 asus_led_exit(); 1343 asus_input_exit(); 1344 1345 acpi_bus_unregister_driver(&asus_hotk_driver); 1346 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); 1347 platform_device_unregister(asuspf_device); 1348 platform_driver_unregister(&asuspf_driver); 1349} 1350 1351static int asus_backlight_init(struct device *dev) 1352{ 1353 struct backlight_device *bd; 1354 1355 if (brightness_set_handle && lcd_switch_handle) { 1356 bd = backlight_device_register(ASUS_HOTK_FILE, dev, 1357 NULL, &asusbl_ops); 1358 if (IS_ERR(bd)) { 1359 pr_err("Could not register asus backlight device\n"); 1360 asus_backlight_device = NULL; 1361 return PTR_ERR(bd); 1362 } 1363 1364 asus_backlight_device = bd; 1365 1366 bd->props.max_brightness = 15; 1367 bd->props.brightness = read_brightness(NULL); 1368 bd->props.power = FB_BLANK_UNBLANK; 1369 backlight_update_status(bd); 1370 } 1371 return 0; 1372} 1373 1374static int asus_led_register(acpi_handle handle, 1375 struct led_classdev *ldev, struct device *dev) 1376{ 1377 if (!handle) 1378 return 0; 1379 1380 return led_classdev_register(dev, ldev); 1381} 1382 1383#define ASUS_LED_REGISTER(object, device) \ 1384 asus_led_register(object##_set_handle, &object##_led, device) 1385 1386static int asus_led_init(struct device *dev) 1387{ 1388 int rv; 1389 1390 rv = ASUS_LED_REGISTER(mled, dev); 1391 if (rv) 1392 goto out; 1393 1394 rv = ASUS_LED_REGISTER(tled, dev); 1395 if (rv) 1396 goto out1; 1397 1398 rv = ASUS_LED_REGISTER(rled, dev); 1399 if (rv) 1400 goto out2; 1401 1402 rv = ASUS_LED_REGISTER(pled, dev); 1403 if (rv) 1404 goto out3; 1405 1406 rv = ASUS_LED_REGISTER(gled, dev); 1407 if (rv) 1408 goto out4; 1409 1410 if (kled_set_handle && kled_get_handle) 1411 rv = ASUS_LED_REGISTER(kled, dev); 1412 if (rv) 1413 goto out5; 1414 1415 led_workqueue = create_singlethread_workqueue("led_workqueue"); 1416 if (!led_workqueue) 1417 goto out6; 1418 1419 return 0; 1420out6: 1421 rv = -ENOMEM; 1422 ASUS_LED_UNREGISTER(kled); 1423out5: 1424 ASUS_LED_UNREGISTER(gled); 1425out4: 1426 ASUS_LED_UNREGISTER(pled); 1427out3: 1428 ASUS_LED_UNREGISTER(rled); 1429out2: 1430 ASUS_LED_UNREGISTER(tled); 1431out1: 1432 ASUS_LED_UNREGISTER(mled); 1433out: 1434 return rv; 1435} 1436 1437static int __init asus_laptop_init(void) 1438{ 1439 int result; 1440 1441 result = acpi_bus_register_driver(&asus_hotk_driver); 1442 if (result < 0) 1443 return result; 1444 1445 /* 1446 * This is a bit of a kludge. We only want this module loaded 1447 * for ASUS systems, but there's currently no way to probe the 1448 * ACPI namespace for ASUS HIDs. So we just return failure if 1449 * we didn't find one, which will cause the module to be 1450 * unloaded. 1451 */ 1452 if (!asus_hotk_found) { 1453 acpi_bus_unregister_driver(&asus_hotk_driver); 1454 return -ENODEV; 1455 } 1456 1457 result = asus_input_init(); 1458 if (result) 1459 goto fail_input; 1460 1461 /* Register platform stuff */ 1462 result = platform_driver_register(&asuspf_driver); 1463 if (result) 1464 goto fail_platform_driver; 1465 1466 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); 1467 if (!asuspf_device) { 1468 result = -ENOMEM; 1469 goto fail_platform_device1; 1470 } 1471 1472 result = platform_device_add(asuspf_device); 1473 if (result) 1474 goto fail_platform_device2; 1475 1476 result = sysfs_create_group(&asuspf_device->dev.kobj, 1477 &asuspf_attribute_group); 1478 if (result) 1479 goto fail_sysfs; 1480 1481 result = asus_led_init(&asuspf_device->dev); 1482 if (result) 1483 goto fail_led; 1484 1485 if (!acpi_video_backlight_support()) { 1486 result = asus_backlight_init(&asuspf_device->dev); 1487 if (result) 1488 goto fail_backlight; 1489 } else 1490 pr_info("Brightness ignored, must be controlled by " 1491 "ACPI video driver\n"); 1492 1493 return 0; 1494 1495fail_backlight: 1496 asus_led_exit(); 1497 1498fail_led: 1499 sysfs_remove_group(&asuspf_device->dev.kobj, 1500 &asuspf_attribute_group); 1501 1502fail_sysfs: 1503 platform_device_del(asuspf_device); 1504 1505fail_platform_device2: 1506 platform_device_put(asuspf_device); 1507 1508fail_platform_device1: 1509 platform_driver_unregister(&asuspf_driver); 1510 1511fail_platform_driver: 1512 asus_input_exit(); 1513 1514fail_input: 1515 1516 return result; 1517} 1518 1519module_init(asus_laptop_init); 1520module_exit(asus_laptop_exit); 1521