asus-laptop.c revision 4644d0e5bd1412bbaed77e46c0c3376c6d060a74
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/* WAPF defines the behavior of the Fn+Fx wlan key 103 * The significance of values is yet to be found, but 104 * most of the time: 105 * 0x0 will do nothing 106 * 0x1 will allow to control the device with Fn+Fx key. 107 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 108 * 0x5 like 0x1 or 0x4 109 * So, if something doesn't work as you want, just try other values =) 110 */ 111static uint wapf = 1; 112module_param(wapf, uint, 0644); 113MODULE_PARM_DESC(wapf, "WAPF value"); 114 115#define ASUS_HANDLE(object, paths...) \ 116 static acpi_handle object##_handle = NULL; \ 117 static char *object##_paths[] = { paths } 118 119/* LED */ 120ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED"); 121ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED"); 122ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */ 123ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */ 124ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */ 125 126/* LEDD */ 127ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM"); 128 129/* Bluetooth and WLAN 130 * WLED and BLED are not handled like other XLED, because in some dsdt 131 * they also control the WLAN/Bluetooth device. 132 */ 133ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); 134ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); 135ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ 136 137/* Brightness */ 138ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); 139ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); 140 141/* Backlight */ 142ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 143 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 144 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 145 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 146 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 147 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 148 "\\_SB.PCI0.PX40.Q10", /* S1x */ 149 "\\Q10"); /* A2x, L2D, L3D, M2E */ 150 151/* Display */ 152ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); 153ASUS_HANDLE(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G 154 M6A M6V VX-1 V6J V6V W3Z */ 155 "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V 156 S5A M5A z33A W1Jc W2V G1 */ 157 "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */ 158 "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */ 159 "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */ 160 "\\_SB.PCI0.VGA.GETD", /* Z96F */ 161 "\\ACTD", /* A2D */ 162 "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 163 "\\DNXT", /* P30 */ 164 "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 165 "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */ 166 167ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */ 168ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */ 169 170/* GPS */ 171/* R2H use different handle for GPS on/off */ 172ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */ 173ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */ 174ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST"); 175 176/* Keyboard light */ 177ASUS_HANDLE(kled_set, ASUS_HOTK_PREFIX "SLKB"); 178ASUS_HANDLE(kled_get, ASUS_HOTK_PREFIX "GLKB"); 179 180/* 181 * This is the main structure, we can use it to store anything interesting 182 * about the hotk device 183 */ 184struct asus_hotk { 185 char *name; //laptop name 186 struct acpi_device *device; //the device we are in 187 acpi_handle handle; //the handle of the hotk device 188 char status; //status of the hotk, for LEDs, ... 189 u32 ledd_status; //status of the LED display 190 u8 light_level; //light sensor level 191 u8 light_switch; //light sensor switch value 192 u16 event_count[128]; //count for each event TODO make this better 193 struct input_dev *inputdev; 194 u16 *keycode_map; 195}; 196 197/* 198 * This header is made available to allow proper configuration given model, 199 * revision number , ... this info cannot go in struct asus_hotk because it is 200 * available before the hotk 201 */ 202static struct acpi_table_header *asus_info; 203 204/* The actual device the driver binds to */ 205static struct asus_hotk *hotk; 206 207/* 208 * The hotkey driver declaration 209 */ 210static const struct acpi_device_id asus_device_ids[] = { 211 {"ATK0100", 0}, 212 {"", 0}, 213}; 214MODULE_DEVICE_TABLE(acpi, asus_device_ids); 215 216static int asus_hotk_add(struct acpi_device *device); 217static int asus_hotk_remove(struct acpi_device *device, int type); 218static void asus_hotk_notify(struct acpi_device *device, u32 event); 219 220static struct acpi_driver asus_hotk_driver = { 221 .name = ASUS_HOTK_NAME, 222 .class = ASUS_HOTK_CLASS, 223 .ids = asus_device_ids, 224 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 225 .ops = { 226 .add = asus_hotk_add, 227 .remove = asus_hotk_remove, 228 .notify = asus_hotk_notify, 229 }, 230}; 231 232/* The backlight device /sys/class/backlight */ 233static struct backlight_device *asus_backlight_device; 234 235/* 236 * The backlight class declaration 237 */ 238static int read_brightness(struct backlight_device *bd); 239static int update_bl_status(struct backlight_device *bd); 240static struct backlight_ops asusbl_ops = { 241 .get_brightness = read_brightness, 242 .update_status = update_bl_status, 243}; 244 245/* These functions actually update the LED's, and are called from a 246 * workqueue. By doing this as separate work rather than when the LED 247 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 248 * potentially bad time, such as a timer interrupt. */ 249static struct workqueue_struct *led_workqueue; 250 251#define ASUS_LED(object, ledname, max) \ 252 static void object##_led_set(struct led_classdev *led_cdev, \ 253 enum led_brightness value); \ 254 static enum led_brightness object##_led_get( \ 255 struct led_classdev *led_cdev); \ 256 static void object##_led_update(struct work_struct *ignored); \ 257 static int object##_led_wk; \ 258 static DECLARE_WORK(object##_led_work, object##_led_update); \ 259 static struct led_classdev object##_led = { \ 260 .name = "asus::" ledname, \ 261 .brightness_set = object##_led_set, \ 262 .brightness_get = object##_led_get, \ 263 .max_brightness = max \ 264 } 265 266ASUS_LED(mled, "mail", 1); 267ASUS_LED(tled, "touchpad", 1); 268ASUS_LED(rled, "record", 1); 269ASUS_LED(pled, "phone", 1); 270ASUS_LED(gled, "gaming", 1); 271ASUS_LED(kled, "kbd_backlight", 3); 272 273struct key_entry { 274 char type; 275 u8 code; 276 u16 keycode; 277}; 278 279enum { KE_KEY, KE_END }; 280 281static struct key_entry asus_keymap[] = { 282 {KE_KEY, 0x30, KEY_VOLUMEUP}, 283 {KE_KEY, 0x31, KEY_VOLUMEDOWN}, 284 {KE_KEY, 0x32, KEY_MUTE}, 285 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE}, 286 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE}, 287 {KE_KEY, 0x40, KEY_PREVIOUSSONG}, 288 {KE_KEY, 0x41, KEY_NEXTSONG}, 289 {KE_KEY, 0x43, KEY_STOPCD}, 290 {KE_KEY, 0x45, KEY_PLAYPAUSE}, 291 {KE_KEY, 0x4c, KEY_MEDIA}, 292 {KE_KEY, 0x50, KEY_EMAIL}, 293 {KE_KEY, 0x51, KEY_WWW}, 294 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */ 295 {KE_KEY, 0x5D, KEY_WLAN}, 296 {KE_KEY, 0x5E, KEY_WLAN}, 297 {KE_KEY, 0x5F, KEY_WLAN}, 298 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE}, 299 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE}, 300 {KE_KEY, 0x6B, BTN_TOUCH}, /* Lock Mouse */ 301 {KE_KEY, 0x82, KEY_CAMERA}, 302 {KE_KEY, 0x8A, KEY_PROG1}, 303 {KE_KEY, 0x95, KEY_MEDIA}, 304 {KE_KEY, 0x99, KEY_PHONE}, 305 {KE_KEY, 0xc4, KEY_KBDILLUMUP}, 306 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN}, 307 {KE_END, 0}, 308}; 309 310/* 311 * This function evaluates an ACPI method, given an int as parameter, the 312 * method is searched within the scope of the handle, can be NULL. The output 313 * of the method is written is output, which can also be NULL 314 * 315 * returns 0 if write is successful, -1 else. 316 */ 317static int write_acpi_int(acpi_handle handle, const char *method, int val, 318 struct acpi_buffer *output) 319{ 320 struct acpi_object_list params; //list of input parameters (an int here) 321 union acpi_object in_obj; //the only param we use 322 acpi_status status; 323 324 if (!handle) 325 return 0; 326 327 params.count = 1; 328 params.pointer = &in_obj; 329 in_obj.type = ACPI_TYPE_INTEGER; 330 in_obj.integer.value = val; 331 332 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 333 if (status == AE_OK) 334 return 0; 335 else 336 return -1; 337} 338 339static int read_wireless_status(int mask) 340{ 341 unsigned long long status; 342 acpi_status rv = AE_OK; 343 344 if (!wireless_status_handle) 345 return (hotk->status & mask) ? 1 : 0; 346 347 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); 348 if (ACPI_FAILURE(rv)) 349 pr_warning("Error reading Wireless status\n"); 350 else 351 return (status & mask) ? 1 : 0; 352 353 return (hotk->status & mask) ? 1 : 0; 354} 355 356static int read_gps_status(void) 357{ 358 unsigned long long status; 359 acpi_status rv = AE_OK; 360 361 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status); 362 if (ACPI_FAILURE(rv)) 363 pr_warning("Error reading GPS status\n"); 364 else 365 return status ? 1 : 0; 366 367 return (hotk->status & GPS_ON) ? 1 : 0; 368} 369 370/* Generic LED functions */ 371static int read_status(int mask) 372{ 373 /* There is a special method for both wireless devices */ 374 if (mask == BT_ON || mask == WL_ON) 375 return read_wireless_status(mask); 376 else if (mask == GPS_ON) 377 return read_gps_status(); 378 379 return (hotk->status & mask) ? 1 : 0; 380} 381 382static void write_status(acpi_handle handle, int out, int mask) 383{ 384 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); 385 386 switch (mask) { 387 case MLED_ON: 388 out = !(out & 0x1); 389 break; 390 case GLED_ON: 391 out = (out & 0x1) + 1; 392 break; 393 case GPS_ON: 394 handle = (out) ? gps_on_handle : gps_off_handle; 395 out = 0x02; 396 break; 397 default: 398 out &= 0x1; 399 break; 400 } 401 402 if (write_acpi_int(handle, NULL, out, NULL)) 403 pr_warning(" write failed %x\n", mask); 404} 405 406/* /sys/class/led handlers */ 407#define ASUS_LED_HANDLER(object, mask) \ 408 static void object##_led_set(struct led_classdev *led_cdev, \ 409 enum led_brightness value) \ 410 { \ 411 object##_led_wk = (value > 0) ? 1 : 0; \ 412 queue_work(led_workqueue, &object##_led_work); \ 413 } \ 414 static void object##_led_update(struct work_struct *ignored) \ 415 { \ 416 int value = object##_led_wk; \ 417 write_status(object##_set_handle, value, (mask)); \ 418 } \ 419 static enum led_brightness object##_led_get( \ 420 struct led_classdev *led_cdev) \ 421 { \ 422 return led_cdev->brightness; \ 423 } 424 425ASUS_LED_HANDLER(mled, MLED_ON); 426ASUS_LED_HANDLER(pled, PLED_ON); 427ASUS_LED_HANDLER(rled, RLED_ON); 428ASUS_LED_HANDLER(tled, TLED_ON); 429ASUS_LED_HANDLER(gled, GLED_ON); 430 431/* 432 * Keyboard backlight 433 */ 434static int get_kled_lvl(void) 435{ 436 unsigned long long kblv; 437 struct acpi_object_list params; 438 union acpi_object in_obj; 439 acpi_status rv; 440 441 params.count = 1; 442 params.pointer = &in_obj; 443 in_obj.type = ACPI_TYPE_INTEGER; 444 in_obj.integer.value = 2; 445 446 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv); 447 if (ACPI_FAILURE(rv)) { 448 pr_warning("Error reading kled level\n"); 449 return 0; 450 } 451 return kblv; 452} 453 454static int set_kled_lvl(int kblv) 455{ 456 if (kblv > 0) 457 kblv = (1 << 7) | (kblv & 0x7F); 458 else 459 kblv = 0; 460 461 if (write_acpi_int(kled_set_handle, NULL, kblv, NULL)) { 462 pr_warning("Keyboard LED display write failed\n"); 463 return -EINVAL; 464 } 465 return 0; 466} 467 468static void kled_led_set(struct led_classdev *led_cdev, 469 enum led_brightness value) 470{ 471 kled_led_wk = value; 472 queue_work(led_workqueue, &kled_led_work); 473} 474 475static void kled_led_update(struct work_struct *ignored) 476{ 477 set_kled_lvl(kled_led_wk); 478} 479 480static enum led_brightness kled_led_get(struct led_classdev *led_cdev) 481{ 482 return get_kled_lvl(); 483} 484 485static int get_lcd_state(void) 486{ 487 return read_status(LCD_ON); 488} 489 490static int set_lcd_state(int value) 491{ 492 int lcd = 0; 493 acpi_status status = 0; 494 495 lcd = value ? 1 : 0; 496 497 if (lcd == get_lcd_state()) 498 return 0; 499 500 if (lcd_switch_handle) { 501 status = acpi_evaluate_object(lcd_switch_handle, 502 NULL, NULL, NULL); 503 504 if (ACPI_FAILURE(status)) 505 pr_warning("Error switching LCD\n"); 506 } 507 508 write_status(NULL, lcd, LCD_ON); 509 return 0; 510} 511 512static void lcd_blank(int blank) 513{ 514 struct backlight_device *bd = asus_backlight_device; 515 516 if (bd) { 517 bd->props.power = blank; 518 backlight_update_status(bd); 519 } 520} 521 522static int read_brightness(struct backlight_device *bd) 523{ 524 unsigned long long value; 525 acpi_status rv = AE_OK; 526 527 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value); 528 if (ACPI_FAILURE(rv)) 529 pr_warning("Error reading brightness\n"); 530 531 return value; 532} 533 534static int set_brightness(struct backlight_device *bd, int value) 535{ 536 int ret = 0; 537 538 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 539 /* 0 <= value <= 15 */ 540 541 if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) { 542 pr_warning("Error changing brightness\n"); 543 ret = -EIO; 544 } 545 546 return ret; 547} 548 549static int update_bl_status(struct backlight_device *bd) 550{ 551 int rv; 552 int value = bd->props.brightness; 553 554 rv = set_brightness(bd, value); 555 if (rv) 556 return rv; 557 558 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 559 return set_lcd_state(value); 560} 561 562/* 563 * Platform device handlers 564 */ 565 566/* 567 * We write our info in page, we begin at offset off and cannot write more 568 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 569 * number of bytes written in page 570 */ 571static ssize_t show_infos(struct device *dev, 572 struct device_attribute *attr, char *page) 573{ 574 int len = 0; 575 unsigned long long temp; 576 char buf[16]; //enough for all info 577 acpi_status rv = AE_OK; 578 579 /* 580 * We use the easy way, we don't care of off and count, so we don't set eof 581 * to 1 582 */ 583 584 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); 585 len += sprintf(page + len, "Model reference : %s\n", hotk->name); 586 /* 587 * The SFUN method probably allows the original driver to get the list 588 * of features supported by a given model. For now, 0x0100 or 0x0800 589 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 590 * The significance of others is yet to be found. 591 */ 592 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp); 593 if (!ACPI_FAILURE(rv)) 594 len += sprintf(page + len, "SFUN value : %#x\n", 595 (uint) temp); 596 /* 597 * The HWRS method return informations about the hardware. 598 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 599 * The significance of others is yet to be found. 600 * If we don't find the method, we assume the device are present. 601 */ 602 rv = acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &temp); 603 if (!ACPI_FAILURE(rv)) 604 len += sprintf(page + len, "HRWS value : %#x\n", 605 (uint) temp); 606 /* 607 * Another value for userspace: the ASYM method returns 0x02 for 608 * battery low and 0x04 for battery critical, its readings tend to be 609 * more accurate than those provided by _BST. 610 * Note: since not all the laptops provide this method, errors are 611 * silently ignored. 612 */ 613 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp); 614 if (!ACPI_FAILURE(rv)) 615 len += sprintf(page + len, "ASYM value : %#x\n", 616 (uint) temp); 617 if (asus_info) { 618 snprintf(buf, 16, "%d", asus_info->length); 619 len += sprintf(page + len, "DSDT length : %s\n", buf); 620 snprintf(buf, 16, "%d", asus_info->checksum); 621 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 622 snprintf(buf, 16, "%d", asus_info->revision); 623 len += sprintf(page + len, "DSDT revision : %s\n", buf); 624 snprintf(buf, 7, "%s", asus_info->oem_id); 625 len += sprintf(page + len, "OEM id : %s\n", buf); 626 snprintf(buf, 9, "%s", asus_info->oem_table_id); 627 len += sprintf(page + len, "OEM table id : %s\n", buf); 628 snprintf(buf, 16, "%x", asus_info->oem_revision); 629 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 630 snprintf(buf, 5, "%s", asus_info->asl_compiler_id); 631 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 632 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); 633 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 634 } 635 636 return len; 637} 638 639static int parse_arg(const char *buf, unsigned long count, int *val) 640{ 641 if (!count) 642 return 0; 643 if (count > 31) 644 return -EINVAL; 645 if (sscanf(buf, "%i", val) != 1) 646 return -EINVAL; 647 return count; 648} 649 650static ssize_t store_status(const char *buf, size_t count, 651 acpi_handle handle, int mask) 652{ 653 int rv, value; 654 int out = 0; 655 656 rv = parse_arg(buf, count, &value); 657 if (rv > 0) 658 out = value ? 1 : 0; 659 660 write_status(handle, out, mask); 661 662 return rv; 663} 664 665/* 666 * LEDD display 667 */ 668static ssize_t show_ledd(struct device *dev, 669 struct device_attribute *attr, char *buf) 670{ 671 return sprintf(buf, "0x%08x\n", hotk->ledd_status); 672} 673 674static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 675 const char *buf, size_t count) 676{ 677 int rv, value; 678 679 rv = parse_arg(buf, count, &value); 680 if (rv > 0) { 681 if (write_acpi_int(ledd_set_handle, NULL, value, NULL)) 682 pr_warning("LED display write failed\n"); 683 else 684 hotk->ledd_status = (u32) value; 685 } 686 return rv; 687} 688 689/* 690 * WLAN 691 */ 692static ssize_t show_wlan(struct device *dev, 693 struct device_attribute *attr, char *buf) 694{ 695 return sprintf(buf, "%d\n", read_status(WL_ON)); 696} 697 698static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 699 const char *buf, size_t count) 700{ 701 return store_status(buf, count, wl_switch_handle, WL_ON); 702} 703 704/* 705 * Bluetooth 706 */ 707static ssize_t show_bluetooth(struct device *dev, 708 struct device_attribute *attr, char *buf) 709{ 710 return sprintf(buf, "%d\n", read_status(BT_ON)); 711} 712 713static ssize_t store_bluetooth(struct device *dev, 714 struct device_attribute *attr, const char *buf, 715 size_t count) 716{ 717 return store_status(buf, count, bt_switch_handle, BT_ON); 718} 719 720/* 721 * Display 722 */ 723static void set_display(int value) 724{ 725 /* no sanity check needed for now */ 726 if (write_acpi_int(display_set_handle, NULL, value, NULL)) 727 pr_warning("Error setting display\n"); 728 return; 729} 730 731static int read_display(void) 732{ 733 unsigned long long value = 0; 734 acpi_status rv = AE_OK; 735 736 /* In most of the case, we know how to set the display, but sometime 737 we can't read it */ 738 if (display_get_handle) { 739 rv = acpi_evaluate_integer(display_get_handle, NULL, 740 NULL, &value); 741 if (ACPI_FAILURE(rv)) 742 pr_warning("Error reading display status\n"); 743 } 744 745 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 746 747 return value; 748} 749 750/* 751 * Now, *this* one could be more user-friendly, but so far, no-one has 752 * complained. The significance of bits is the same as in store_disp() 753 */ 754static ssize_t show_disp(struct device *dev, 755 struct device_attribute *attr, char *buf) 756{ 757 return sprintf(buf, "%d\n", read_display()); 758} 759 760/* 761 * Experimental support for display switching. As of now: 1 should activate 762 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 763 * Any combination (bitwise) of these will suffice. I never actually tested 4 764 * displays hooked up simultaneously, so be warned. See the acpi4asus README 765 * for more info. 766 */ 767static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 768 const char *buf, size_t count) 769{ 770 int rv, value; 771 772 rv = parse_arg(buf, count, &value); 773 if (rv > 0) 774 set_display(value); 775 return rv; 776} 777 778/* 779 * Light Sens 780 */ 781static void set_light_sens_switch(int value) 782{ 783 if (write_acpi_int(ls_switch_handle, NULL, value, NULL)) 784 pr_warning("Error setting light sensor switch\n"); 785 hotk->light_switch = value; 786} 787 788static ssize_t show_lssw(struct device *dev, 789 struct device_attribute *attr, char *buf) 790{ 791 return sprintf(buf, "%d\n", hotk->light_switch); 792} 793 794static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 795 const char *buf, size_t count) 796{ 797 int rv, value; 798 799 rv = parse_arg(buf, count, &value); 800 if (rv > 0) 801 set_light_sens_switch(value ? 1 : 0); 802 803 return rv; 804} 805 806static void set_light_sens_level(int value) 807{ 808 if (write_acpi_int(ls_level_handle, NULL, value, NULL)) 809 pr_warning("Error setting light sensor level\n"); 810 hotk->light_level = value; 811} 812 813static ssize_t show_lslvl(struct device *dev, 814 struct device_attribute *attr, char *buf) 815{ 816 return sprintf(buf, "%d\n", hotk->light_level); 817} 818 819static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 820 const char *buf, size_t count) 821{ 822 int rv, value; 823 824 rv = parse_arg(buf, count, &value); 825 if (rv > 0) { 826 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 827 /* 0 <= value <= 15 */ 828 set_light_sens_level(value); 829 } 830 831 return rv; 832} 833 834/* 835 * GPS 836 */ 837static ssize_t show_gps(struct device *dev, 838 struct device_attribute *attr, char *buf) 839{ 840 return sprintf(buf, "%d\n", read_status(GPS_ON)); 841} 842 843static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 844 const char *buf, size_t count) 845{ 846 return store_status(buf, count, NULL, GPS_ON); 847} 848 849/* 850 * Hotkey functions 851 */ 852static struct key_entry *asus_get_entry_by_scancode(int code) 853{ 854 struct key_entry *key; 855 856 for (key = asus_keymap; key->type != KE_END; key++) 857 if (code == key->code) 858 return key; 859 860 return NULL; 861} 862 863static struct key_entry *asus_get_entry_by_keycode(int code) 864{ 865 struct key_entry *key; 866 867 for (key = asus_keymap; key->type != KE_END; key++) 868 if (code == key->keycode && key->type == KE_KEY) 869 return key; 870 871 return NULL; 872} 873 874static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode) 875{ 876 struct key_entry *key = asus_get_entry_by_scancode(scancode); 877 878 if (key && key->type == KE_KEY) { 879 *keycode = key->keycode; 880 return 0; 881 } 882 883 return -EINVAL; 884} 885 886static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode) 887{ 888 struct key_entry *key; 889 int old_keycode; 890 891 if (keycode < 0 || keycode > KEY_MAX) 892 return -EINVAL; 893 894 key = asus_get_entry_by_scancode(scancode); 895 if (key && key->type == KE_KEY) { 896 old_keycode = key->keycode; 897 key->keycode = keycode; 898 set_bit(keycode, dev->keybit); 899 if (!asus_get_entry_by_keycode(old_keycode)) 900 clear_bit(old_keycode, dev->keybit); 901 return 0; 902 } 903 904 return -EINVAL; 905} 906 907static void asus_hotk_notify(struct acpi_device *device, u32 event) 908{ 909 static struct key_entry *key; 910 u16 count; 911 912 /* TODO Find a better way to handle events count. */ 913 if (!hotk) 914 return; 915 916 /* 917 * We need to tell the backlight device when the backlight power is 918 * switched 919 */ 920 if (event == ATKD_LCD_ON) { 921 write_status(NULL, 1, LCD_ON); 922 lcd_blank(FB_BLANK_UNBLANK); 923 } else if (event == ATKD_LCD_OFF) { 924 write_status(NULL, 0, LCD_ON); 925 lcd_blank(FB_BLANK_POWERDOWN); 926 } 927 928 count = hotk->event_count[event % 128]++; 929 acpi_bus_generate_proc_event(hotk->device, event, count); 930 acpi_bus_generate_netlink_event(hotk->device->pnp.device_class, 931 dev_name(&hotk->device->dev), event, 932 count); 933 934 if (hotk->inputdev) { 935 key = asus_get_entry_by_scancode(event); 936 if (!key) 937 return ; 938 939 switch (key->type) { 940 case KE_KEY: 941 input_report_key(hotk->inputdev, key->keycode, 1); 942 input_sync(hotk->inputdev); 943 input_report_key(hotk->inputdev, key->keycode, 0); 944 input_sync(hotk->inputdev); 945 break; 946 } 947 } 948} 949 950#define ASUS_CREATE_DEVICE_ATTR(_name) \ 951 struct device_attribute dev_attr_##_name = { \ 952 .attr = { \ 953 .name = __stringify(_name), \ 954 .mode = 0 }, \ 955 .show = NULL, \ 956 .store = NULL, \ 957 } 958 959#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ 960 do { \ 961 dev_attr_##_name.attr.mode = _mode; \ 962 dev_attr_##_name.show = _show; \ 963 dev_attr_##_name.store = _store; \ 964 } while(0) 965 966static ASUS_CREATE_DEVICE_ATTR(infos); 967static ASUS_CREATE_DEVICE_ATTR(wlan); 968static ASUS_CREATE_DEVICE_ATTR(bluetooth); 969static ASUS_CREATE_DEVICE_ATTR(display); 970static ASUS_CREATE_DEVICE_ATTR(ledd); 971static ASUS_CREATE_DEVICE_ATTR(ls_switch); 972static ASUS_CREATE_DEVICE_ATTR(ls_level); 973static ASUS_CREATE_DEVICE_ATTR(gps); 974 975static struct attribute *asuspf_attributes[] = { 976 &dev_attr_infos.attr, 977 &dev_attr_wlan.attr, 978 &dev_attr_bluetooth.attr, 979 &dev_attr_display.attr, 980 &dev_attr_ledd.attr, 981 &dev_attr_ls_switch.attr, 982 &dev_attr_ls_level.attr, 983 &dev_attr_gps.attr, 984 NULL 985}; 986 987static struct attribute_group asuspf_attribute_group = { 988 .attrs = asuspf_attributes 989}; 990 991static struct platform_driver asuspf_driver = { 992 .driver = { 993 .name = ASUS_HOTK_FILE, 994 .owner = THIS_MODULE, 995 } 996}; 997 998static struct platform_device *asuspf_device; 999 1000static void asus_hotk_add_fs(void) 1001{ 1002 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); 1003 1004 if (wl_switch_handle) 1005 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); 1006 1007 if (bt_switch_handle) 1008 ASUS_SET_DEVICE_ATTR(bluetooth, 0644, 1009 show_bluetooth, store_bluetooth); 1010 1011 if (display_set_handle && display_get_handle) 1012 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); 1013 else if (display_set_handle) 1014 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); 1015 1016 if (ledd_set_handle) 1017 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); 1018 1019 if (ls_switch_handle && ls_level_handle) { 1020 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); 1021 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); 1022 } 1023 1024 if (gps_status_handle && gps_on_handle && gps_off_handle) 1025 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps); 1026} 1027 1028static int asus_handle_init(char *name, acpi_handle * handle, 1029 char **paths, int num_paths) 1030{ 1031 int i; 1032 acpi_status status; 1033 1034 for (i = 0; i < num_paths; i++) { 1035 status = acpi_get_handle(NULL, paths[i], handle); 1036 if (ACPI_SUCCESS(status)) 1037 return 0; 1038 } 1039 1040 *handle = NULL; 1041 return -ENODEV; 1042} 1043 1044#define ASUS_HANDLE_INIT(object) \ 1045 asus_handle_init(#object, &object##_handle, object##_paths, \ 1046 ARRAY_SIZE(object##_paths)) 1047 1048/* 1049 * This function is used to initialize the hotk with right values. In this 1050 * method, we can make all the detection we want, and modify the hotk struct 1051 */ 1052static int asus_hotk_get_info(void) 1053{ 1054 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1055 union acpi_object *model = NULL; 1056 unsigned long long bsts_result, hwrs_result; 1057 char *string = NULL; 1058 acpi_status status; 1059 1060 /* 1061 * Get DSDT headers early enough to allow for differentiating between 1062 * models, but late enough to allow acpi_bus_register_driver() to fail 1063 * before doing anything ACPI-specific. Should we encounter a machine, 1064 * which needs special handling (i.e. its hotkey device has a different 1065 * HID), this bit will be moved. A global variable asus_info contains 1066 * the DSDT header. 1067 */ 1068 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info); 1069 if (ACPI_FAILURE(status)) 1070 pr_warning("Couldn't get the DSDT table header\n"); 1071 1072 /* We have to write 0 on init this far for all ASUS models */ 1073 if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { 1074 pr_err("Hotkey initialization failed\n"); 1075 return -ENODEV; 1076 } 1077 1078 /* This needs to be called for some laptops to init properly */ 1079 status = 1080 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result); 1081 if (ACPI_FAILURE(status)) 1082 pr_warning("Error calling BSTS\n"); 1083 else if (bsts_result) 1084 pr_notice("BSTS called, 0x%02x returned\n", 1085 (uint) bsts_result); 1086 1087 /* This too ... */ 1088 write_acpi_int(hotk->handle, "CWAP", wapf, NULL); 1089 1090 /* 1091 * Try to match the object returned by INIT to the specific model. 1092 * Handle every possible object (or the lack of thereof) the DSDT 1093 * writers might throw at us. When in trouble, we pass NULL to 1094 * asus_model_match() and try something completely different. 1095 */ 1096 if (buffer.pointer) { 1097 model = buffer.pointer; 1098 switch (model->type) { 1099 case ACPI_TYPE_STRING: 1100 string = model->string.pointer; 1101 break; 1102 case ACPI_TYPE_BUFFER: 1103 string = model->buffer.pointer; 1104 break; 1105 default: 1106 string = ""; 1107 break; 1108 } 1109 } 1110 hotk->name = kstrdup(string, GFP_KERNEL); 1111 if (!hotk->name) 1112 return -ENOMEM; 1113 1114 if (*string) 1115 pr_notice(" %s model detected\n", string); 1116 1117 ASUS_HANDLE_INIT(mled_set); 1118 ASUS_HANDLE_INIT(tled_set); 1119 ASUS_HANDLE_INIT(rled_set); 1120 ASUS_HANDLE_INIT(pled_set); 1121 ASUS_HANDLE_INIT(gled_set); 1122 1123 ASUS_HANDLE_INIT(ledd_set); 1124 1125 ASUS_HANDLE_INIT(kled_set); 1126 ASUS_HANDLE_INIT(kled_get); 1127 1128 /* 1129 * The HWRS method return informations about the hardware. 1130 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1131 * The significance of others is yet to be found. 1132 * If we don't find the method, we assume the device are present. 1133 */ 1134 status = 1135 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result); 1136 if (ACPI_FAILURE(status)) 1137 hwrs_result = WL_HWRS | BT_HWRS; 1138 1139 if (hwrs_result & WL_HWRS) 1140 ASUS_HANDLE_INIT(wl_switch); 1141 if (hwrs_result & BT_HWRS) 1142 ASUS_HANDLE_INIT(bt_switch); 1143 1144 ASUS_HANDLE_INIT(wireless_status); 1145 1146 ASUS_HANDLE_INIT(brightness_set); 1147 ASUS_HANDLE_INIT(brightness_get); 1148 1149 ASUS_HANDLE_INIT(lcd_switch); 1150 1151 ASUS_HANDLE_INIT(display_set); 1152 ASUS_HANDLE_INIT(display_get); 1153 1154 /* There is a lot of models with "ALSL", but a few get 1155 a real light sens, so we need to check it. */ 1156 if (!ASUS_HANDLE_INIT(ls_switch)) 1157 ASUS_HANDLE_INIT(ls_level); 1158 1159 ASUS_HANDLE_INIT(gps_on); 1160 ASUS_HANDLE_INIT(gps_off); 1161 ASUS_HANDLE_INIT(gps_status); 1162 1163 kfree(model); 1164 1165 return AE_OK; 1166} 1167 1168static int asus_input_init(void) 1169{ 1170 const struct key_entry *key; 1171 int result; 1172 1173 hotk->inputdev = input_allocate_device(); 1174 if (!hotk->inputdev) { 1175 pr_info("Unable to allocate input device\n"); 1176 return 0; 1177 } 1178 hotk->inputdev->name = "Asus Laptop extra buttons"; 1179 hotk->inputdev->phys = ASUS_HOTK_FILE "/input0"; 1180 hotk->inputdev->id.bustype = BUS_HOST; 1181 hotk->inputdev->getkeycode = asus_getkeycode; 1182 hotk->inputdev->setkeycode = asus_setkeycode; 1183 1184 for (key = asus_keymap; key->type != KE_END; key++) { 1185 switch (key->type) { 1186 case KE_KEY: 1187 set_bit(EV_KEY, hotk->inputdev->evbit); 1188 set_bit(key->keycode, hotk->inputdev->keybit); 1189 break; 1190 } 1191 } 1192 result = input_register_device(hotk->inputdev); 1193 if (result) { 1194 pr_info("Unable to register input device\n"); 1195 input_free_device(hotk->inputdev); 1196 } 1197 return result; 1198} 1199 1200static int asus_hotk_check(void) 1201{ 1202 int result = 0; 1203 1204 result = acpi_bus_get_status(hotk->device); 1205 if (result) 1206 return result; 1207 1208 if (hotk->device->status.present) { 1209 result = asus_hotk_get_info(); 1210 } else { 1211 pr_err("Hotkey device not present, aborting\n"); 1212 return -EINVAL; 1213 } 1214 1215 return result; 1216} 1217 1218static int asus_hotk_found; 1219 1220static int asus_hotk_add(struct acpi_device *device) 1221{ 1222 int result; 1223 1224 if (!device) 1225 return -EINVAL; 1226 1227 pr_notice("Asus Laptop Support version %s\n", 1228 ASUS_LAPTOP_VERSION); 1229 1230 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL); 1231 if (!hotk) 1232 return -ENOMEM; 1233 1234 hotk->handle = device->handle; 1235 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); 1236 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); 1237 device->driver_data = hotk; 1238 hotk->device = device; 1239 1240 result = asus_hotk_check(); 1241 if (result) 1242 goto end; 1243 1244 asus_hotk_add_fs(); 1245 1246 asus_hotk_found = 1; 1247 1248 /* WLED and BLED are on by default */ 1249 write_status(bt_switch_handle, 1, BT_ON); 1250 write_status(wl_switch_handle, 1, WL_ON); 1251 1252 /* If the h/w switch is off, we need to check the real status */ 1253 write_status(NULL, read_status(BT_ON), BT_ON); 1254 write_status(NULL, read_status(WL_ON), WL_ON); 1255 1256 /* LCD Backlight is on by default */ 1257 write_status(NULL, 1, LCD_ON); 1258 1259 /* Keyboard Backlight is on by default */ 1260 if (kled_set_handle) 1261 set_kled_lvl(1); 1262 1263 /* LED display is off by default */ 1264 hotk->ledd_status = 0xFFF; 1265 1266 /* Set initial values of light sensor and level */ 1267 hotk->light_switch = 1; /* Default to light sensor disabled */ 1268 hotk->light_level = 0; /* level 5 for sensor sensitivity */ 1269 1270 if (ls_switch_handle) 1271 set_light_sens_switch(hotk->light_switch); 1272 1273 if (ls_level_handle) 1274 set_light_sens_level(hotk->light_level); 1275 1276 /* GPS is on by default */ 1277 write_status(NULL, 1, GPS_ON); 1278 1279end: 1280 if (result) { 1281 kfree(hotk->name); 1282 kfree(hotk); 1283 } 1284 1285 return result; 1286} 1287 1288static int asus_hotk_remove(struct acpi_device *device, int type) 1289{ 1290 if (!device || !acpi_driver_data(device)) 1291 return -EINVAL; 1292 1293 kfree(hotk->name); 1294 kfree(hotk); 1295 1296 return 0; 1297} 1298 1299static void asus_backlight_exit(void) 1300{ 1301 if (asus_backlight_device) 1302 backlight_device_unregister(asus_backlight_device); 1303} 1304 1305#define ASUS_LED_UNREGISTER(object) \ 1306 if (object##_led.dev) \ 1307 led_classdev_unregister(&object##_led) 1308 1309static void asus_led_exit(void) 1310{ 1311 destroy_workqueue(led_workqueue); 1312 ASUS_LED_UNREGISTER(mled); 1313 ASUS_LED_UNREGISTER(tled); 1314 ASUS_LED_UNREGISTER(pled); 1315 ASUS_LED_UNREGISTER(rled); 1316 ASUS_LED_UNREGISTER(gled); 1317 ASUS_LED_UNREGISTER(kled); 1318} 1319 1320static void asus_input_exit(void) 1321{ 1322 if (hotk->inputdev) 1323 input_unregister_device(hotk->inputdev); 1324} 1325 1326static void __exit asus_laptop_exit(void) 1327{ 1328 asus_backlight_exit(); 1329 asus_led_exit(); 1330 asus_input_exit(); 1331 1332 acpi_bus_unregister_driver(&asus_hotk_driver); 1333 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); 1334 platform_device_unregister(asuspf_device); 1335 platform_driver_unregister(&asuspf_driver); 1336} 1337 1338static int asus_backlight_init(struct device *dev) 1339{ 1340 struct backlight_device *bd; 1341 1342 if (brightness_set_handle && lcd_switch_handle) { 1343 bd = backlight_device_register(ASUS_HOTK_FILE, dev, 1344 NULL, &asusbl_ops); 1345 if (IS_ERR(bd)) { 1346 pr_err("Could not register asus backlight device\n"); 1347 asus_backlight_device = NULL; 1348 return PTR_ERR(bd); 1349 } 1350 1351 asus_backlight_device = bd; 1352 1353 bd->props.max_brightness = 15; 1354 bd->props.brightness = read_brightness(NULL); 1355 bd->props.power = FB_BLANK_UNBLANK; 1356 backlight_update_status(bd); 1357 } 1358 return 0; 1359} 1360 1361static int asus_led_register(acpi_handle handle, 1362 struct led_classdev *ldev, struct device *dev) 1363{ 1364 if (!handle) 1365 return 0; 1366 1367 return led_classdev_register(dev, ldev); 1368} 1369 1370#define ASUS_LED_REGISTER(object, device) \ 1371 asus_led_register(object##_set_handle, &object##_led, device) 1372 1373static int asus_led_init(struct device *dev) 1374{ 1375 int rv; 1376 1377 rv = ASUS_LED_REGISTER(mled, dev); 1378 if (rv) 1379 goto out; 1380 1381 rv = ASUS_LED_REGISTER(tled, dev); 1382 if (rv) 1383 goto out1; 1384 1385 rv = ASUS_LED_REGISTER(rled, dev); 1386 if (rv) 1387 goto out2; 1388 1389 rv = ASUS_LED_REGISTER(pled, dev); 1390 if (rv) 1391 goto out3; 1392 1393 rv = ASUS_LED_REGISTER(gled, dev); 1394 if (rv) 1395 goto out4; 1396 1397 if (kled_set_handle && kled_get_handle) 1398 rv = ASUS_LED_REGISTER(kled, dev); 1399 if (rv) 1400 goto out5; 1401 1402 led_workqueue = create_singlethread_workqueue("led_workqueue"); 1403 if (!led_workqueue) 1404 goto out6; 1405 1406 return 0; 1407out6: 1408 rv = -ENOMEM; 1409 ASUS_LED_UNREGISTER(kled); 1410out5: 1411 ASUS_LED_UNREGISTER(gled); 1412out4: 1413 ASUS_LED_UNREGISTER(pled); 1414out3: 1415 ASUS_LED_UNREGISTER(rled); 1416out2: 1417 ASUS_LED_UNREGISTER(tled); 1418out1: 1419 ASUS_LED_UNREGISTER(mled); 1420out: 1421 return rv; 1422} 1423 1424static int __init asus_laptop_init(void) 1425{ 1426 int result; 1427 1428 if (acpi_disabled) 1429 return -ENODEV; 1430 1431 result = acpi_bus_register_driver(&asus_hotk_driver); 1432 if (result < 0) 1433 return result; 1434 1435 /* 1436 * This is a bit of a kludge. We only want this module loaded 1437 * for ASUS systems, but there's currently no way to probe the 1438 * ACPI namespace for ASUS HIDs. So we just return failure if 1439 * we didn't find one, which will cause the module to be 1440 * unloaded. 1441 */ 1442 if (!asus_hotk_found) { 1443 acpi_bus_unregister_driver(&asus_hotk_driver); 1444 return -ENODEV; 1445 } 1446 1447 result = asus_input_init(); 1448 if (result) 1449 goto fail_input; 1450 1451 /* Register platform stuff */ 1452 result = platform_driver_register(&asuspf_driver); 1453 if (result) 1454 goto fail_platform_driver; 1455 1456 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); 1457 if (!asuspf_device) { 1458 result = -ENOMEM; 1459 goto fail_platform_device1; 1460 } 1461 1462 result = platform_device_add(asuspf_device); 1463 if (result) 1464 goto fail_platform_device2; 1465 1466 result = sysfs_create_group(&asuspf_device->dev.kobj, 1467 &asuspf_attribute_group); 1468 if (result) 1469 goto fail_sysfs; 1470 1471 result = asus_led_init(&asuspf_device->dev); 1472 if (result) 1473 goto fail_led; 1474 1475 if (!acpi_video_backlight_support()) { 1476 result = asus_backlight_init(&asuspf_device->dev); 1477 if (result) 1478 goto fail_backlight; 1479 } else 1480 pr_info("Brightness ignored, must be controlled by " 1481 "ACPI video driver\n"); 1482 1483 return 0; 1484 1485fail_backlight: 1486 asus_led_exit(); 1487 1488fail_led: 1489 sysfs_remove_group(&asuspf_device->dev.kobj, 1490 &asuspf_attribute_group); 1491 1492fail_sysfs: 1493 platform_device_del(asuspf_device); 1494 1495fail_platform_device2: 1496 platform_device_put(asuspf_device); 1497 1498fail_platform_device1: 1499 platform_driver_unregister(&asuspf_driver); 1500 1501fail_platform_driver: 1502 asus_input_exit(); 1503 1504fail_input: 1505 1506 return result; 1507} 1508 1509module_init(asus_laptop_init); 1510module_exit(asus_laptop_exit); 1511